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_band - supported frequency bands 72 * 73 * The bands are assigned this way because the supported 74 * bitrates differ in these bands. 75 * 76 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 77 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 78 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz) 79 * @IEEE80211_NUM_BANDS: number of defined bands 80 */ 81 enum ieee80211_band { 82 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 83 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 84 IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ, 85 86 /* keep last */ 87 IEEE80211_NUM_BANDS 88 }; 89 90 /** 91 * enum ieee80211_channel_flags - channel flags 92 * 93 * Channel flags set by the regulatory control code. 94 * 95 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 96 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes 97 * sending probe requests or beaconing. 98 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 99 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 100 * is not permitted. 101 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 102 * is not permitted. 103 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel. 104 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band, 105 * this flag indicates that an 80 MHz channel cannot use this 106 * channel as the control or any of the secondary channels. 107 * This may be due to the driver or due to regulatory bandwidth 108 * restrictions. 109 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band, 110 * this flag indicates that an 160 MHz channel cannot use this 111 * channel as the control or any of the secondary channels. 112 * This may be due to the driver or due to regulatory bandwidth 113 * restrictions. 114 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY 115 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT 116 * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted 117 * on this channel. 118 * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted 119 * on this channel. 120 * 121 */ 122 enum ieee80211_channel_flags { 123 IEEE80211_CHAN_DISABLED = 1<<0, 124 IEEE80211_CHAN_NO_IR = 1<<1, 125 /* hole at 1<<2 */ 126 IEEE80211_CHAN_RADAR = 1<<3, 127 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 128 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 129 IEEE80211_CHAN_NO_OFDM = 1<<6, 130 IEEE80211_CHAN_NO_80MHZ = 1<<7, 131 IEEE80211_CHAN_NO_160MHZ = 1<<8, 132 IEEE80211_CHAN_INDOOR_ONLY = 1<<9, 133 IEEE80211_CHAN_IR_CONCURRENT = 1<<10, 134 IEEE80211_CHAN_NO_20MHZ = 1<<11, 135 IEEE80211_CHAN_NO_10MHZ = 1<<12, 136 }; 137 138 #define IEEE80211_CHAN_NO_HT40 \ 139 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 140 141 #define IEEE80211_DFS_MIN_CAC_TIME_MS 60000 142 #define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000) 143 144 /** 145 * struct ieee80211_channel - channel definition 146 * 147 * This structure describes a single channel for use 148 * with cfg80211. 149 * 150 * @center_freq: center frequency in MHz 151 * @hw_value: hardware-specific value for the channel 152 * @flags: channel flags from &enum ieee80211_channel_flags. 153 * @orig_flags: channel flags at registration time, used by regulatory 154 * code to support devices with additional restrictions 155 * @band: band this channel belongs to. 156 * @max_antenna_gain: maximum antenna gain in dBi 157 * @max_power: maximum transmission power (in dBm) 158 * @max_reg_power: maximum regulatory transmission power (in dBm) 159 * @beacon_found: helper to regulatory code to indicate when a beacon 160 * has been found on this channel. Use regulatory_hint_found_beacon() 161 * to enable this, this is useful only on 5 GHz band. 162 * @orig_mag: internal use 163 * @orig_mpwr: internal use 164 * @dfs_state: current state of this channel. Only relevant if radar is required 165 * on this channel. 166 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. 167 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels. 168 */ 169 struct ieee80211_channel { 170 enum ieee80211_band band; 171 u16 center_freq; 172 u16 hw_value; 173 u32 flags; 174 int max_antenna_gain; 175 int max_power; 176 int max_reg_power; 177 bool beacon_found; 178 u32 orig_flags; 179 int orig_mag, orig_mpwr; 180 enum nl80211_dfs_state dfs_state; 181 unsigned long dfs_state_entered; 182 unsigned int dfs_cac_ms; 183 }; 184 185 /** 186 * enum ieee80211_rate_flags - rate flags 187 * 188 * Hardware/specification flags for rates. These are structured 189 * in a way that allows using the same bitrate structure for 190 * different bands/PHY modes. 191 * 192 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 193 * preamble on this bitrate; only relevant in 2.4GHz band and 194 * with CCK rates. 195 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 196 * when used with 802.11a (on the 5 GHz band); filled by the 197 * core code when registering the wiphy. 198 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 199 * when used with 802.11b (on the 2.4 GHz band); filled by the 200 * core code when registering the wiphy. 201 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 202 * when used with 802.11g (on the 2.4 GHz band); filled by the 203 * core code when registering the wiphy. 204 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 205 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode 206 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode 207 */ 208 enum ieee80211_rate_flags { 209 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 210 IEEE80211_RATE_MANDATORY_A = 1<<1, 211 IEEE80211_RATE_MANDATORY_B = 1<<2, 212 IEEE80211_RATE_MANDATORY_G = 1<<3, 213 IEEE80211_RATE_ERP_G = 1<<4, 214 IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5, 215 IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6, 216 }; 217 218 /** 219 * enum ieee80211_bss_type - BSS type filter 220 * 221 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS 222 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS 223 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS 224 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS 225 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type 226 */ 227 enum ieee80211_bss_type { 228 IEEE80211_BSS_TYPE_ESS, 229 IEEE80211_BSS_TYPE_PBSS, 230 IEEE80211_BSS_TYPE_IBSS, 231 IEEE80211_BSS_TYPE_MBSS, 232 IEEE80211_BSS_TYPE_ANY 233 }; 234 235 /** 236 * enum ieee80211_privacy - BSS privacy filter 237 * 238 * @IEEE80211_PRIVACY_ON: privacy bit set 239 * @IEEE80211_PRIVACY_OFF: privacy bit clear 240 * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting 241 */ 242 enum ieee80211_privacy { 243 IEEE80211_PRIVACY_ON, 244 IEEE80211_PRIVACY_OFF, 245 IEEE80211_PRIVACY_ANY 246 }; 247 248 #define IEEE80211_PRIVACY(x) \ 249 ((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF) 250 251 /** 252 * struct ieee80211_rate - bitrate definition 253 * 254 * This structure describes a bitrate that an 802.11 PHY can 255 * operate with. The two values @hw_value and @hw_value_short 256 * are only for driver use when pointers to this structure are 257 * passed around. 258 * 259 * @flags: rate-specific flags 260 * @bitrate: bitrate in units of 100 Kbps 261 * @hw_value: driver/hardware value for this rate 262 * @hw_value_short: driver/hardware value for this rate when 263 * short preamble is used 264 */ 265 struct ieee80211_rate { 266 u32 flags; 267 u16 bitrate; 268 u16 hw_value, hw_value_short; 269 }; 270 271 /** 272 * struct ieee80211_sta_ht_cap - STA's HT capabilities 273 * 274 * This structure describes most essential parameters needed 275 * to describe 802.11n HT capabilities for an STA. 276 * 277 * @ht_supported: is HT supported by the STA 278 * @cap: HT capabilities map as described in 802.11n spec 279 * @ampdu_factor: Maximum A-MPDU length factor 280 * @ampdu_density: Minimum A-MPDU spacing 281 * @mcs: Supported MCS rates 282 */ 283 struct ieee80211_sta_ht_cap { 284 u16 cap; /* use IEEE80211_HT_CAP_ */ 285 bool ht_supported; 286 u8 ampdu_factor; 287 u8 ampdu_density; 288 struct ieee80211_mcs_info mcs; 289 }; 290 291 /** 292 * struct ieee80211_sta_vht_cap - STA's VHT capabilities 293 * 294 * This structure describes most essential parameters needed 295 * to describe 802.11ac VHT capabilities for an STA. 296 * 297 * @vht_supported: is VHT supported by the STA 298 * @cap: VHT capabilities map as described in 802.11ac spec 299 * @vht_mcs: Supported VHT MCS rates 300 */ 301 struct ieee80211_sta_vht_cap { 302 bool vht_supported; 303 u32 cap; /* use IEEE80211_VHT_CAP_ */ 304 struct ieee80211_vht_mcs_info vht_mcs; 305 }; 306 307 /** 308 * struct ieee80211_supported_band - frequency band definition 309 * 310 * This structure describes a frequency band a wiphy 311 * is able to operate in. 312 * 313 * @channels: Array of channels the hardware can operate in 314 * in this band. 315 * @band: the band this structure represents 316 * @n_channels: Number of channels in @channels 317 * @bitrates: Array of bitrates the hardware can operate with 318 * in this band. Must be sorted to give a valid "supported 319 * rates" IE, i.e. CCK rates first, then OFDM. 320 * @n_bitrates: Number of bitrates in @bitrates 321 * @ht_cap: HT capabilities in this band 322 * @vht_cap: VHT capabilities in this band 323 */ 324 struct ieee80211_supported_band { 325 struct ieee80211_channel *channels; 326 struct ieee80211_rate *bitrates; 327 enum ieee80211_band band; 328 int n_channels; 329 int n_bitrates; 330 struct ieee80211_sta_ht_cap ht_cap; 331 struct ieee80211_sta_vht_cap vht_cap; 332 }; 333 334 /* 335 * Wireless hardware/device configuration structures and methods 336 */ 337 338 /** 339 * DOC: Actions and configuration 340 * 341 * Each wireless device and each virtual interface offer a set of configuration 342 * operations and other actions that are invoked by userspace. Each of these 343 * actions is described in the operations structure, and the parameters these 344 * operations use are described separately. 345 * 346 * Additionally, some operations are asynchronous and expect to get status 347 * information via some functions that drivers need to call. 348 * 349 * Scanning and BSS list handling with its associated functionality is described 350 * in a separate chapter. 351 */ 352 353 /** 354 * struct vif_params - describes virtual interface parameters 355 * @use_4addr: use 4-address frames 356 * @macaddr: address to use for this virtual interface. 357 * If this parameter is set to zero address the driver may 358 * determine the address as needed. 359 * This feature is only fully supported by drivers that enable the 360 * %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating 361 ** only p2p devices with specified MAC. 362 */ 363 struct vif_params { 364 int use_4addr; 365 u8 macaddr[ETH_ALEN]; 366 }; 367 368 /** 369 * struct key_params - key information 370 * 371 * Information about a key 372 * 373 * @key: key material 374 * @key_len: length of key material 375 * @cipher: cipher suite selector 376 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 377 * with the get_key() callback, must be in little endian, 378 * length given by @seq_len. 379 * @seq_len: length of @seq. 380 */ 381 struct key_params { 382 const u8 *key; 383 const u8 *seq; 384 int key_len; 385 int seq_len; 386 u32 cipher; 387 }; 388 389 /** 390 * struct cfg80211_chan_def - channel definition 391 * @chan: the (control) channel 392 * @width: channel width 393 * @center_freq1: center frequency of first segment 394 * @center_freq2: center frequency of second segment 395 * (only with 80+80 MHz) 396 */ 397 struct cfg80211_chan_def { 398 struct ieee80211_channel *chan; 399 enum nl80211_chan_width width; 400 u32 center_freq1; 401 u32 center_freq2; 402 }; 403 404 /** 405 * cfg80211_get_chandef_type - return old channel type from chandef 406 * @chandef: the channel definition 407 * 408 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given 409 * chandef, which must have a bandwidth allowing this conversion. 410 */ 411 static inline enum nl80211_channel_type 412 cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) 413 { 414 switch (chandef->width) { 415 case NL80211_CHAN_WIDTH_20_NOHT: 416 return NL80211_CHAN_NO_HT; 417 case NL80211_CHAN_WIDTH_20: 418 return NL80211_CHAN_HT20; 419 case NL80211_CHAN_WIDTH_40: 420 if (chandef->center_freq1 > chandef->chan->center_freq) 421 return NL80211_CHAN_HT40PLUS; 422 return NL80211_CHAN_HT40MINUS; 423 default: 424 WARN_ON(1); 425 return NL80211_CHAN_NO_HT; 426 } 427 } 428 429 /** 430 * cfg80211_chandef_create - create channel definition using channel type 431 * @chandef: the channel definition struct to fill 432 * @channel: the control channel 433 * @chantype: the channel type 434 * 435 * Given a channel type, create a channel definition. 436 */ 437 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, 438 struct ieee80211_channel *channel, 439 enum nl80211_channel_type chantype); 440 441 /** 442 * cfg80211_chandef_identical - check if two channel definitions are identical 443 * @chandef1: first channel definition 444 * @chandef2: second channel definition 445 * 446 * Return: %true if the channels defined by the channel definitions are 447 * identical, %false otherwise. 448 */ 449 static inline bool 450 cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, 451 const struct cfg80211_chan_def *chandef2) 452 { 453 return (chandef1->chan == chandef2->chan && 454 chandef1->width == chandef2->width && 455 chandef1->center_freq1 == chandef2->center_freq1 && 456 chandef1->center_freq2 == chandef2->center_freq2); 457 } 458 459 /** 460 * cfg80211_chandef_compatible - check if two channel definitions are compatible 461 * @chandef1: first channel definition 462 * @chandef2: second channel definition 463 * 464 * Return: %NULL if the given channel definitions are incompatible, 465 * chandef1 or chandef2 otherwise. 466 */ 467 const struct cfg80211_chan_def * 468 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, 469 const struct cfg80211_chan_def *chandef2); 470 471 /** 472 * cfg80211_chandef_valid - check if a channel definition is valid 473 * @chandef: the channel definition to check 474 * Return: %true if the channel definition is valid. %false otherwise. 475 */ 476 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef); 477 478 /** 479 * cfg80211_chandef_usable - check if secondary channels can be used 480 * @wiphy: the wiphy to validate against 481 * @chandef: the channel definition to check 482 * @prohibited_flags: the regulatory channel flags that must not be set 483 * Return: %true if secondary channels are usable. %false otherwise. 484 */ 485 bool cfg80211_chandef_usable(struct wiphy *wiphy, 486 const struct cfg80211_chan_def *chandef, 487 u32 prohibited_flags); 488 489 /** 490 * cfg80211_chandef_dfs_required - checks if radar detection is required 491 * @wiphy: the wiphy to validate against 492 * @chandef: the channel definition to check 493 * @iftype: the interface type as specified in &enum nl80211_iftype 494 * Returns: 495 * 1 if radar detection is required, 0 if it is not, < 0 on error 496 */ 497 int cfg80211_chandef_dfs_required(struct wiphy *wiphy, 498 const struct cfg80211_chan_def *chandef, 499 enum nl80211_iftype iftype); 500 501 /** 502 * ieee80211_chandef_rate_flags - returns rate flags for a channel 503 * 504 * In some channel types, not all rates may be used - for example CCK 505 * rates may not be used in 5/10 MHz channels. 506 * 507 * @chandef: channel definition for the channel 508 * 509 * Returns: rate flags which apply for this channel 510 */ 511 static inline enum ieee80211_rate_flags 512 ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef) 513 { 514 switch (chandef->width) { 515 case NL80211_CHAN_WIDTH_5: 516 return IEEE80211_RATE_SUPPORTS_5MHZ; 517 case NL80211_CHAN_WIDTH_10: 518 return IEEE80211_RATE_SUPPORTS_10MHZ; 519 default: 520 break; 521 } 522 return 0; 523 } 524 525 /** 526 * ieee80211_chandef_max_power - maximum transmission power for the chandef 527 * 528 * In some regulations, the transmit power may depend on the configured channel 529 * bandwidth which may be defined as dBm/MHz. This function returns the actual 530 * max_power for non-standard (20 MHz) channels. 531 * 532 * @chandef: channel definition for the channel 533 * 534 * Returns: maximum allowed transmission power in dBm for the chandef 535 */ 536 static inline int 537 ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) 538 { 539 switch (chandef->width) { 540 case NL80211_CHAN_WIDTH_5: 541 return min(chandef->chan->max_reg_power - 6, 542 chandef->chan->max_power); 543 case NL80211_CHAN_WIDTH_10: 544 return min(chandef->chan->max_reg_power - 3, 545 chandef->chan->max_power); 546 default: 547 break; 548 } 549 return chandef->chan->max_power; 550 } 551 552 /** 553 * enum survey_info_flags - survey information flags 554 * 555 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 556 * @SURVEY_INFO_IN_USE: channel is currently being used 557 * @SURVEY_INFO_TIME: active time (in ms) was filled in 558 * @SURVEY_INFO_TIME_BUSY: busy time was filled in 559 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in 560 * @SURVEY_INFO_TIME_RX: receive time was filled in 561 * @SURVEY_INFO_TIME_TX: transmit time was filled in 562 * @SURVEY_INFO_TIME_SCAN: scan time was filled in 563 * 564 * Used by the driver to indicate which info in &struct survey_info 565 * it has filled in during the get_survey(). 566 */ 567 enum survey_info_flags { 568 SURVEY_INFO_NOISE_DBM = BIT(0), 569 SURVEY_INFO_IN_USE = BIT(1), 570 SURVEY_INFO_TIME = BIT(2), 571 SURVEY_INFO_TIME_BUSY = BIT(3), 572 SURVEY_INFO_TIME_EXT_BUSY = BIT(4), 573 SURVEY_INFO_TIME_RX = BIT(5), 574 SURVEY_INFO_TIME_TX = BIT(6), 575 SURVEY_INFO_TIME_SCAN = BIT(7), 576 }; 577 578 /** 579 * struct survey_info - channel survey response 580 * 581 * @channel: the channel this survey record reports, may be %NULL for a single 582 * record to report global statistics 583 * @filled: bitflag of flags from &enum survey_info_flags 584 * @noise: channel noise in dBm. This and all following fields are 585 * optional 586 * @time: amount of time in ms the radio was turn on (on the channel) 587 * @time_busy: amount of time the primary channel was sensed busy 588 * @time_ext_busy: amount of time the extension channel was sensed busy 589 * @time_rx: amount of time the radio spent receiving data 590 * @time_tx: amount of time the radio spent transmitting data 591 * @time_scan: amount of time the radio spent for scanning 592 * 593 * Used by dump_survey() to report back per-channel survey information. 594 * 595 * This structure can later be expanded with things like 596 * channel duty cycle etc. 597 */ 598 struct survey_info { 599 struct ieee80211_channel *channel; 600 u64 time; 601 u64 time_busy; 602 u64 time_ext_busy; 603 u64 time_rx; 604 u64 time_tx; 605 u64 time_scan; 606 u32 filled; 607 s8 noise; 608 }; 609 610 /** 611 * struct cfg80211_crypto_settings - Crypto settings 612 * @wpa_versions: indicates which, if any, WPA versions are enabled 613 * (from enum nl80211_wpa_versions) 614 * @cipher_group: group key cipher suite (or 0 if unset) 615 * @n_ciphers_pairwise: number of AP supported unicast ciphers 616 * @ciphers_pairwise: unicast key cipher suites 617 * @n_akm_suites: number of AKM suites 618 * @akm_suites: AKM suites 619 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 620 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 621 * required to assume that the port is unauthorized until authorized by 622 * user space. Otherwise, port is marked authorized by default. 623 * @control_port_ethertype: the control port protocol that should be 624 * allowed through even on unauthorized ports 625 * @control_port_no_encrypt: TRUE to prevent encryption of control port 626 * protocol frames. 627 */ 628 struct cfg80211_crypto_settings { 629 u32 wpa_versions; 630 u32 cipher_group; 631 int n_ciphers_pairwise; 632 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 633 int n_akm_suites; 634 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 635 bool control_port; 636 __be16 control_port_ethertype; 637 bool control_port_no_encrypt; 638 }; 639 640 /** 641 * struct cfg80211_beacon_data - beacon data 642 * @head: head portion of beacon (before TIM IE) 643 * or %NULL if not changed 644 * @tail: tail portion of beacon (after TIM IE) 645 * or %NULL if not changed 646 * @head_len: length of @head 647 * @tail_len: length of @tail 648 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 649 * @beacon_ies_len: length of beacon_ies in octets 650 * @proberesp_ies: extra information element(s) to add into Probe Response 651 * frames or %NULL 652 * @proberesp_ies_len: length of proberesp_ies in octets 653 * @assocresp_ies: extra information element(s) to add into (Re)Association 654 * Response frames or %NULL 655 * @assocresp_ies_len: length of assocresp_ies in octets 656 * @probe_resp_len: length of probe response template (@probe_resp) 657 * @probe_resp: probe response template (AP mode only) 658 */ 659 struct cfg80211_beacon_data { 660 const u8 *head, *tail; 661 const u8 *beacon_ies; 662 const u8 *proberesp_ies; 663 const u8 *assocresp_ies; 664 const u8 *probe_resp; 665 666 size_t head_len, tail_len; 667 size_t beacon_ies_len; 668 size_t proberesp_ies_len; 669 size_t assocresp_ies_len; 670 size_t probe_resp_len; 671 }; 672 673 struct mac_address { 674 u8 addr[ETH_ALEN]; 675 }; 676 677 /** 678 * struct cfg80211_acl_data - Access control list data 679 * 680 * @acl_policy: ACL policy to be applied on the station's 681 * entry specified by mac_addr 682 * @n_acl_entries: Number of MAC address entries passed 683 * @mac_addrs: List of MAC addresses of stations to be used for ACL 684 */ 685 struct cfg80211_acl_data { 686 enum nl80211_acl_policy acl_policy; 687 int n_acl_entries; 688 689 /* Keep it last */ 690 struct mac_address mac_addrs[]; 691 }; 692 693 /** 694 * struct cfg80211_ap_settings - AP configuration 695 * 696 * Used to configure an AP interface. 697 * 698 * @chandef: defines the channel to use 699 * @beacon: beacon data 700 * @beacon_interval: beacon interval 701 * @dtim_period: DTIM period 702 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 703 * user space) 704 * @ssid_len: length of @ssid 705 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 706 * @crypto: crypto settings 707 * @privacy: the BSS uses privacy 708 * @auth_type: Authentication type (algorithm) 709 * @smps_mode: SMPS mode 710 * @inactivity_timeout: time in seconds to determine station's inactivity. 711 * @p2p_ctwindow: P2P CT Window 712 * @p2p_opp_ps: P2P opportunistic PS 713 * @acl: ACL configuration used by the drivers which has support for 714 * MAC address based access control 715 * @pbss: If set, start as a PCP instead of AP. Relevant for DMG 716 * networks. 717 */ 718 struct cfg80211_ap_settings { 719 struct cfg80211_chan_def chandef; 720 721 struct cfg80211_beacon_data beacon; 722 723 int beacon_interval, dtim_period; 724 const u8 *ssid; 725 size_t ssid_len; 726 enum nl80211_hidden_ssid hidden_ssid; 727 struct cfg80211_crypto_settings crypto; 728 bool privacy; 729 enum nl80211_auth_type auth_type; 730 enum nl80211_smps_mode smps_mode; 731 int inactivity_timeout; 732 u8 p2p_ctwindow; 733 bool p2p_opp_ps; 734 const struct cfg80211_acl_data *acl; 735 bool pbss; 736 }; 737 738 /** 739 * struct cfg80211_csa_settings - channel switch settings 740 * 741 * Used for channel switch 742 * 743 * @chandef: defines the channel to use after the switch 744 * @beacon_csa: beacon data while performing the switch 745 * @counter_offsets_beacon: offsets of the counters within the beacon (tail) 746 * @counter_offsets_presp: offsets of the counters within the probe response 747 * @n_counter_offsets_beacon: number of csa counters the beacon (tail) 748 * @n_counter_offsets_presp: number of csa counters in the probe response 749 * @beacon_after: beacon data to be used on the new channel 750 * @radar_required: whether radar detection is required on the new channel 751 * @block_tx: whether transmissions should be blocked while changing 752 * @count: number of beacons until switch 753 */ 754 struct cfg80211_csa_settings { 755 struct cfg80211_chan_def chandef; 756 struct cfg80211_beacon_data beacon_csa; 757 const u16 *counter_offsets_beacon; 758 const u16 *counter_offsets_presp; 759 unsigned int n_counter_offsets_beacon; 760 unsigned int n_counter_offsets_presp; 761 struct cfg80211_beacon_data beacon_after; 762 bool radar_required; 763 bool block_tx; 764 u8 count; 765 }; 766 767 /** 768 * enum station_parameters_apply_mask - station parameter values to apply 769 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 770 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability 771 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state 772 * 773 * Not all station parameters have in-band "no change" signalling, 774 * for those that don't these flags will are used. 775 */ 776 enum station_parameters_apply_mask { 777 STATION_PARAM_APPLY_UAPSD = BIT(0), 778 STATION_PARAM_APPLY_CAPABILITY = BIT(1), 779 STATION_PARAM_APPLY_PLINK_STATE = BIT(2), 780 }; 781 782 /** 783 * struct station_parameters - station parameters 784 * 785 * Used to change and create a new station. 786 * 787 * @vlan: vlan interface station should belong to 788 * @supported_rates: supported rates in IEEE 802.11 format 789 * (or NULL for no change) 790 * @supported_rates_len: number of supported rates 791 * @sta_flags_mask: station flags that changed 792 * (bitmask of BIT(NL80211_STA_FLAG_...)) 793 * @sta_flags_set: station flags values 794 * (bitmask of BIT(NL80211_STA_FLAG_...)) 795 * @listen_interval: listen interval or -1 for no change 796 * @aid: AID or zero for no change 797 * @plink_action: plink action to take 798 * @plink_state: set the peer link state for a station 799 * @ht_capa: HT capabilities of station 800 * @vht_capa: VHT capabilities of station 801 * @uapsd_queues: bitmap of queues configured for uapsd. same format 802 * as the AC bitmap in the QoS info field 803 * @max_sp: max Service Period. same format as the MAX_SP in the 804 * QoS info field (but already shifted down) 805 * @sta_modify_mask: bitmap indicating which parameters changed 806 * (for those that don't have a natural "no change" value), 807 * see &enum station_parameters_apply_mask 808 * @local_pm: local link-specific mesh power save mode (no change when set 809 * to unknown) 810 * @capability: station capability 811 * @ext_capab: extended capabilities of the station 812 * @ext_capab_len: number of extended capabilities 813 * @supported_channels: supported channels in IEEE 802.11 format 814 * @supported_channels_len: number of supported channels 815 * @supported_oper_classes: supported oper classes in IEEE 802.11 format 816 * @supported_oper_classes_len: number of supported operating classes 817 * @opmode_notif: operating mode field from Operating Mode Notification 818 * @opmode_notif_used: information if operating mode field is used 819 */ 820 struct station_parameters { 821 const u8 *supported_rates; 822 struct net_device *vlan; 823 u32 sta_flags_mask, sta_flags_set; 824 u32 sta_modify_mask; 825 int listen_interval; 826 u16 aid; 827 u8 supported_rates_len; 828 u8 plink_action; 829 u8 plink_state; 830 const struct ieee80211_ht_cap *ht_capa; 831 const struct ieee80211_vht_cap *vht_capa; 832 u8 uapsd_queues; 833 u8 max_sp; 834 enum nl80211_mesh_power_mode local_pm; 835 u16 capability; 836 const u8 *ext_capab; 837 u8 ext_capab_len; 838 const u8 *supported_channels; 839 u8 supported_channels_len; 840 const u8 *supported_oper_classes; 841 u8 supported_oper_classes_len; 842 u8 opmode_notif; 843 bool opmode_notif_used; 844 }; 845 846 /** 847 * struct station_del_parameters - station deletion parameters 848 * 849 * Used to delete a station entry (or all stations). 850 * 851 * @mac: MAC address of the station to remove or NULL to remove all stations 852 * @subtype: Management frame subtype to use for indicating removal 853 * (10 = Disassociation, 12 = Deauthentication) 854 * @reason_code: Reason code for the Disassociation/Deauthentication frame 855 */ 856 struct station_del_parameters { 857 const u8 *mac; 858 u8 subtype; 859 u16 reason_code; 860 }; 861 862 /** 863 * enum cfg80211_station_type - the type of station being modified 864 * @CFG80211_STA_AP_CLIENT: client of an AP interface 865 * @CFG80211_STA_AP_CLIENT_UNASSOC: client of an AP interface that is still 866 * unassociated (update properties for this type of client is permitted) 867 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has 868 * the AP MLME in the device 869 * @CFG80211_STA_AP_STA: AP station on managed interface 870 * @CFG80211_STA_IBSS: IBSS station 871 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry 872 * while TDLS setup is in progress, it moves out of this state when 873 * being marked authorized; use this only if TDLS with external setup is 874 * supported/used) 875 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active 876 * entry that is operating, has been marked authorized by userspace) 877 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed) 878 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed) 879 */ 880 enum cfg80211_station_type { 881 CFG80211_STA_AP_CLIENT, 882 CFG80211_STA_AP_CLIENT_UNASSOC, 883 CFG80211_STA_AP_MLME_CLIENT, 884 CFG80211_STA_AP_STA, 885 CFG80211_STA_IBSS, 886 CFG80211_STA_TDLS_PEER_SETUP, 887 CFG80211_STA_TDLS_PEER_ACTIVE, 888 CFG80211_STA_MESH_PEER_KERNEL, 889 CFG80211_STA_MESH_PEER_USER, 890 }; 891 892 /** 893 * cfg80211_check_station_change - validate parameter changes 894 * @wiphy: the wiphy this operates on 895 * @params: the new parameters for a station 896 * @statype: the type of station being modified 897 * 898 * Utility function for the @change_station driver method. Call this function 899 * with the appropriate station type looking up the station (and checking that 900 * it exists). It will verify whether the station change is acceptable, and if 901 * not will return an error code. Note that it may modify the parameters for 902 * backward compatibility reasons, so don't use them before calling this. 903 */ 904 int cfg80211_check_station_change(struct wiphy *wiphy, 905 struct station_parameters *params, 906 enum cfg80211_station_type statype); 907 908 /** 909 * enum station_info_rate_flags - bitrate info flags 910 * 911 * Used by the driver to indicate the specific rate transmission 912 * type for 802.11n transmissions. 913 * 914 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS 915 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS 916 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 917 * @RATE_INFO_FLAGS_60G: 60GHz MCS 918 */ 919 enum rate_info_flags { 920 RATE_INFO_FLAGS_MCS = BIT(0), 921 RATE_INFO_FLAGS_VHT_MCS = BIT(1), 922 RATE_INFO_FLAGS_SHORT_GI = BIT(2), 923 RATE_INFO_FLAGS_60G = BIT(3), 924 }; 925 926 /** 927 * enum rate_info_bw - rate bandwidth information 928 * 929 * Used by the driver to indicate the rate bandwidth. 930 * 931 * @RATE_INFO_BW_5: 5 MHz bandwidth 932 * @RATE_INFO_BW_10: 10 MHz bandwidth 933 * @RATE_INFO_BW_20: 20 MHz bandwidth 934 * @RATE_INFO_BW_40: 40 MHz bandwidth 935 * @RATE_INFO_BW_80: 80 MHz bandwidth 936 * @RATE_INFO_BW_160: 160 MHz bandwidth 937 */ 938 enum rate_info_bw { 939 RATE_INFO_BW_5, 940 RATE_INFO_BW_10, 941 RATE_INFO_BW_20, 942 RATE_INFO_BW_40, 943 RATE_INFO_BW_80, 944 RATE_INFO_BW_160, 945 }; 946 947 /** 948 * struct rate_info - bitrate information 949 * 950 * Information about a receiving or transmitting bitrate 951 * 952 * @flags: bitflag of flags from &enum rate_info_flags 953 * @mcs: mcs index if struct describes a 802.11n bitrate 954 * @legacy: bitrate in 100kbit/s for 802.11abg 955 * @nss: number of streams (VHT only) 956 * @bw: bandwidth (from &enum rate_info_bw) 957 */ 958 struct rate_info { 959 u8 flags; 960 u8 mcs; 961 u16 legacy; 962 u8 nss; 963 u8 bw; 964 }; 965 966 /** 967 * enum station_info_rate_flags - bitrate info flags 968 * 969 * Used by the driver to indicate the specific rate transmission 970 * type for 802.11n transmissions. 971 * 972 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 973 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 974 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 975 */ 976 enum bss_param_flags { 977 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 978 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 979 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 980 }; 981 982 /** 983 * struct sta_bss_parameters - BSS parameters for the attached station 984 * 985 * Information about the currently associated BSS 986 * 987 * @flags: bitflag of flags from &enum bss_param_flags 988 * @dtim_period: DTIM period for the BSS 989 * @beacon_interval: beacon interval 990 */ 991 struct sta_bss_parameters { 992 u8 flags; 993 u8 dtim_period; 994 u16 beacon_interval; 995 }; 996 997 /** 998 * struct cfg80211_tid_stats - per-TID statistics 999 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to 1000 * indicate the relevant values in this struct are filled 1001 * @rx_msdu: number of received MSDUs 1002 * @tx_msdu: number of (attempted) transmitted MSDUs 1003 * @tx_msdu_retries: number of retries (not counting the first) for 1004 * transmitted MSDUs 1005 * @tx_msdu_failed: number of failed transmitted MSDUs 1006 */ 1007 struct cfg80211_tid_stats { 1008 u32 filled; 1009 u64 rx_msdu; 1010 u64 tx_msdu; 1011 u64 tx_msdu_retries; 1012 u64 tx_msdu_failed; 1013 }; 1014 1015 #define IEEE80211_MAX_CHAINS 4 1016 1017 /** 1018 * struct station_info - station information 1019 * 1020 * Station information filled by driver for get_station() and dump_station. 1021 * 1022 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to 1023 * indicate the relevant values in this struct for them 1024 * @connected_time: time(in secs) since a station is last connected 1025 * @inactive_time: time since last station activity (tx/rx) in milliseconds 1026 * @rx_bytes: bytes (size of MPDUs) received from this station 1027 * @tx_bytes: bytes (size of MPDUs) transmitted to this station 1028 * @llid: mesh local link id 1029 * @plid: mesh peer link id 1030 * @plink_state: mesh peer link state 1031 * @signal: The signal strength, type depends on the wiphy's signal_type. 1032 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1033 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type. 1034 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1035 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg 1036 * @chain_signal: per-chain signal strength of last received packet in dBm 1037 * @chain_signal_avg: per-chain signal strength average in dBm 1038 * @txrate: current unicast bitrate from this station 1039 * @rxrate: current unicast bitrate to this station 1040 * @rx_packets: packets (MSDUs & MMPDUs) received from this station 1041 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station 1042 * @tx_retries: cumulative retry counts (MPDUs) 1043 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK) 1044 * @rx_dropped_misc: Dropped for un-specified reason. 1045 * @bss_param: current BSS parameters 1046 * @generation: generation number for nl80211 dumps. 1047 * This number should increase every time the list of stations 1048 * changes, i.e. when a station is added or removed, so that 1049 * userspace can tell whether it got a consistent snapshot. 1050 * @assoc_req_ies: IEs from (Re)Association Request. 1051 * This is used only when in AP mode with drivers that do not use 1052 * user space MLME/SME implementation. The information is provided for 1053 * the cfg80211_new_sta() calls to notify user space of the IEs. 1054 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 1055 * @sta_flags: station flags mask & values 1056 * @beacon_loss_count: Number of times beacon loss event has triggered. 1057 * @t_offset: Time offset of the station relative to this host. 1058 * @local_pm: local mesh STA power save mode 1059 * @peer_pm: peer mesh STA power save mode 1060 * @nonpeer_pm: non-peer mesh STA power save mode 1061 * @expected_throughput: expected throughput in kbps (including 802.11 headers) 1062 * towards this station. 1063 * @rx_beacon: number of beacons received from this peer 1064 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received 1065 * from this peer 1066 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last 1067 * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. 1068 */ 1069 struct station_info { 1070 u32 filled; 1071 u32 connected_time; 1072 u32 inactive_time; 1073 u64 rx_bytes; 1074 u64 tx_bytes; 1075 u16 llid; 1076 u16 plid; 1077 u8 plink_state; 1078 s8 signal; 1079 s8 signal_avg; 1080 1081 u8 chains; 1082 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1083 s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; 1084 1085 struct rate_info txrate; 1086 struct rate_info rxrate; 1087 u32 rx_packets; 1088 u32 tx_packets; 1089 u32 tx_retries; 1090 u32 tx_failed; 1091 u32 rx_dropped_misc; 1092 struct sta_bss_parameters bss_param; 1093 struct nl80211_sta_flag_update sta_flags; 1094 1095 int generation; 1096 1097 const u8 *assoc_req_ies; 1098 size_t assoc_req_ies_len; 1099 1100 u32 beacon_loss_count; 1101 s64 t_offset; 1102 enum nl80211_mesh_power_mode local_pm; 1103 enum nl80211_mesh_power_mode peer_pm; 1104 enum nl80211_mesh_power_mode nonpeer_pm; 1105 1106 u32 expected_throughput; 1107 1108 u64 rx_beacon; 1109 u8 rx_beacon_signal_avg; 1110 struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1]; 1111 }; 1112 1113 /** 1114 * cfg80211_get_station - retrieve information about a given station 1115 * @dev: the device where the station is supposed to be connected to 1116 * @mac_addr: the mac address of the station of interest 1117 * @sinfo: pointer to the structure to fill with the information 1118 * 1119 * Returns 0 on success and sinfo is filled with the available information 1120 * otherwise returns a negative error code and the content of sinfo has to be 1121 * considered undefined. 1122 */ 1123 int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, 1124 struct station_info *sinfo); 1125 1126 /** 1127 * enum monitor_flags - monitor flags 1128 * 1129 * Monitor interface configuration flags. Note that these must be the bits 1130 * according to the nl80211 flags. 1131 * 1132 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 1133 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 1134 * @MONITOR_FLAG_CONTROL: pass control frames 1135 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 1136 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 1137 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address 1138 */ 1139 enum monitor_flags { 1140 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 1141 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 1142 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 1143 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 1144 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 1145 MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE, 1146 }; 1147 1148 /** 1149 * enum mpath_info_flags - mesh path information flags 1150 * 1151 * Used by the driver to indicate which info in &struct mpath_info it has filled 1152 * in during get_station() or dump_station(). 1153 * 1154 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 1155 * @MPATH_INFO_SN: @sn filled 1156 * @MPATH_INFO_METRIC: @metric filled 1157 * @MPATH_INFO_EXPTIME: @exptime filled 1158 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 1159 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 1160 * @MPATH_INFO_FLAGS: @flags filled 1161 */ 1162 enum mpath_info_flags { 1163 MPATH_INFO_FRAME_QLEN = BIT(0), 1164 MPATH_INFO_SN = BIT(1), 1165 MPATH_INFO_METRIC = BIT(2), 1166 MPATH_INFO_EXPTIME = BIT(3), 1167 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 1168 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 1169 MPATH_INFO_FLAGS = BIT(6), 1170 }; 1171 1172 /** 1173 * struct mpath_info - mesh path information 1174 * 1175 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 1176 * 1177 * @filled: bitfield of flags from &enum mpath_info_flags 1178 * @frame_qlen: number of queued frames for this destination 1179 * @sn: target sequence number 1180 * @metric: metric (cost) of this mesh path 1181 * @exptime: expiration time for the mesh path from now, in msecs 1182 * @flags: mesh path flags 1183 * @discovery_timeout: total mesh path discovery timeout, in msecs 1184 * @discovery_retries: mesh path discovery retries 1185 * @generation: generation number for nl80211 dumps. 1186 * This number should increase every time the list of mesh paths 1187 * changes, i.e. when a station is added or removed, so that 1188 * userspace can tell whether it got a consistent snapshot. 1189 */ 1190 struct mpath_info { 1191 u32 filled; 1192 u32 frame_qlen; 1193 u32 sn; 1194 u32 metric; 1195 u32 exptime; 1196 u32 discovery_timeout; 1197 u8 discovery_retries; 1198 u8 flags; 1199 1200 int generation; 1201 }; 1202 1203 /** 1204 * struct bss_parameters - BSS parameters 1205 * 1206 * Used to change BSS parameters (mainly for AP mode). 1207 * 1208 * @use_cts_prot: Whether to use CTS protection 1209 * (0 = no, 1 = yes, -1 = do not change) 1210 * @use_short_preamble: Whether the use of short preambles is allowed 1211 * (0 = no, 1 = yes, -1 = do not change) 1212 * @use_short_slot_time: Whether the use of short slot time is allowed 1213 * (0 = no, 1 = yes, -1 = do not change) 1214 * @basic_rates: basic rates in IEEE 802.11 format 1215 * (or NULL for no change) 1216 * @basic_rates_len: number of basic rates 1217 * @ap_isolate: do not forward packets between connected stations 1218 * @ht_opmode: HT Operation mode 1219 * (u16 = opmode, -1 = do not change) 1220 * @p2p_ctwindow: P2P CT Window (-1 = no change) 1221 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change) 1222 */ 1223 struct bss_parameters { 1224 int use_cts_prot; 1225 int use_short_preamble; 1226 int use_short_slot_time; 1227 const u8 *basic_rates; 1228 u8 basic_rates_len; 1229 int ap_isolate; 1230 int ht_opmode; 1231 s8 p2p_ctwindow, p2p_opp_ps; 1232 }; 1233 1234 /** 1235 * struct mesh_config - 802.11s mesh configuration 1236 * 1237 * These parameters can be changed while the mesh is active. 1238 * 1239 * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used 1240 * by the Mesh Peering Open message 1241 * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units 1242 * used by the Mesh Peering Open message 1243 * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by 1244 * the mesh peering management to close a mesh peering 1245 * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this 1246 * mesh interface 1247 * @dot11MeshMaxRetries: the maximum number of peer link open retries that can 1248 * be sent to establish a new peer link instance in a mesh 1249 * @dot11MeshTTL: the value of TTL field set at a source mesh STA 1250 * @element_ttl: the value of TTL field set at a mesh STA for path selection 1251 * elements 1252 * @auto_open_plinks: whether we should automatically open peer links when we 1253 * detect compatible mesh peers 1254 * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to 1255 * synchronize to for 11s default synchronization method 1256 * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ 1257 * that an originator mesh STA can send to a particular path target 1258 * @path_refresh_time: how frequently to refresh mesh paths in milliseconds 1259 * @min_discovery_timeout: the minimum length of time to wait until giving up on 1260 * a path discovery in milliseconds 1261 * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs 1262 * receiving a PREQ shall consider the forwarding information from the 1263 * root to be valid. (TU = time unit) 1264 * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during 1265 * which a mesh STA can send only one action frame containing a PREQ 1266 * element 1267 * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during 1268 * which a mesh STA can send only one Action frame containing a PERR 1269 * element 1270 * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that 1271 * it takes for an HWMP information element to propagate across the mesh 1272 * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA 1273 * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root 1274 * announcements are transmitted 1275 * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh 1276 * station has access to a broader network beyond the MBSS. (This is 1277 * missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true 1278 * only means that the station will announce others it's a mesh gate, but 1279 * not necessarily using the gate announcement protocol. Still keeping the 1280 * same nomenclature to be in sync with the spec) 1281 * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding 1282 * entity (default is TRUE - forwarding entity) 1283 * @rssi_threshold: the threshold for average signal strength of candidate 1284 * station to establish a peer link 1285 * @ht_opmode: mesh HT protection mode 1286 * 1287 * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs 1288 * receiving a proactive PREQ shall consider the forwarding information to 1289 * the root mesh STA to be valid. 1290 * 1291 * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive 1292 * PREQs are transmitted. 1293 * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs) 1294 * during which a mesh STA can send only one Action frame containing 1295 * a PREQ element for root path confirmation. 1296 * @power_mode: The default mesh power save mode which will be the initial 1297 * setting for new peer links. 1298 * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake 1299 * after transmitting its beacon. 1300 * @plink_timeout: If no tx activity is seen from a STA we've established 1301 * peering with for longer than this time (in seconds), then remove it 1302 * from the STA's list of peers. Default is 30 minutes. 1303 */ 1304 struct mesh_config { 1305 u16 dot11MeshRetryTimeout; 1306 u16 dot11MeshConfirmTimeout; 1307 u16 dot11MeshHoldingTimeout; 1308 u16 dot11MeshMaxPeerLinks; 1309 u8 dot11MeshMaxRetries; 1310 u8 dot11MeshTTL; 1311 u8 element_ttl; 1312 bool auto_open_plinks; 1313 u32 dot11MeshNbrOffsetMaxNeighbor; 1314 u8 dot11MeshHWMPmaxPREQretries; 1315 u32 path_refresh_time; 1316 u16 min_discovery_timeout; 1317 u32 dot11MeshHWMPactivePathTimeout; 1318 u16 dot11MeshHWMPpreqMinInterval; 1319 u16 dot11MeshHWMPperrMinInterval; 1320 u16 dot11MeshHWMPnetDiameterTraversalTime; 1321 u8 dot11MeshHWMPRootMode; 1322 u16 dot11MeshHWMPRannInterval; 1323 bool dot11MeshGateAnnouncementProtocol; 1324 bool dot11MeshForwarding; 1325 s32 rssi_threshold; 1326 u16 ht_opmode; 1327 u32 dot11MeshHWMPactivePathToRootTimeout; 1328 u16 dot11MeshHWMProotInterval; 1329 u16 dot11MeshHWMPconfirmationInterval; 1330 enum nl80211_mesh_power_mode power_mode; 1331 u16 dot11MeshAwakeWindowDuration; 1332 u32 plink_timeout; 1333 }; 1334 1335 /** 1336 * struct mesh_setup - 802.11s mesh setup configuration 1337 * @chandef: defines the channel to use 1338 * @mesh_id: the mesh ID 1339 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 1340 * @sync_method: which synchronization method to use 1341 * @path_sel_proto: which path selection protocol to use 1342 * @path_metric: which metric to use 1343 * @auth_id: which authentication method this mesh is using 1344 * @ie: vendor information elements (optional) 1345 * @ie_len: length of vendor information elements 1346 * @is_authenticated: this mesh requires authentication 1347 * @is_secure: this mesh uses security 1348 * @user_mpm: userspace handles all MPM functions 1349 * @dtim_period: DTIM period to use 1350 * @beacon_interval: beacon interval to use 1351 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 1352 * @basic_rates: basic rates to use when creating the mesh 1353 * 1354 * These parameters are fixed when the mesh is created. 1355 */ 1356 struct mesh_setup { 1357 struct cfg80211_chan_def chandef; 1358 const u8 *mesh_id; 1359 u8 mesh_id_len; 1360 u8 sync_method; 1361 u8 path_sel_proto; 1362 u8 path_metric; 1363 u8 auth_id; 1364 const u8 *ie; 1365 u8 ie_len; 1366 bool is_authenticated; 1367 bool is_secure; 1368 bool user_mpm; 1369 u8 dtim_period; 1370 u16 beacon_interval; 1371 int mcast_rate[IEEE80211_NUM_BANDS]; 1372 u32 basic_rates; 1373 }; 1374 1375 /** 1376 * struct ocb_setup - 802.11p OCB mode setup configuration 1377 * @chandef: defines the channel to use 1378 * 1379 * These parameters are fixed when connecting to the network 1380 */ 1381 struct ocb_setup { 1382 struct cfg80211_chan_def chandef; 1383 }; 1384 1385 /** 1386 * struct ieee80211_txq_params - TX queue parameters 1387 * @ac: AC identifier 1388 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 1389 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 1390 * 1..32767] 1391 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 1392 * 1..32767] 1393 * @aifs: Arbitration interframe space [0..255] 1394 */ 1395 struct ieee80211_txq_params { 1396 enum nl80211_ac ac; 1397 u16 txop; 1398 u16 cwmin; 1399 u16 cwmax; 1400 u8 aifs; 1401 }; 1402 1403 /** 1404 * DOC: Scanning and BSS list handling 1405 * 1406 * The scanning process itself is fairly simple, but cfg80211 offers quite 1407 * a bit of helper functionality. To start a scan, the scan operation will 1408 * be invoked with a scan definition. This scan definition contains the 1409 * channels to scan, and the SSIDs to send probe requests for (including the 1410 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 1411 * probe. Additionally, a scan request may contain extra information elements 1412 * that should be added to the probe request. The IEs are guaranteed to be 1413 * well-formed, and will not exceed the maximum length the driver advertised 1414 * in the wiphy structure. 1415 * 1416 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 1417 * it is responsible for maintaining the BSS list; the driver should not 1418 * maintain a list itself. For this notification, various functions exist. 1419 * 1420 * Since drivers do not maintain a BSS list, there are also a number of 1421 * functions to search for a BSS and obtain information about it from the 1422 * BSS structure cfg80211 maintains. The BSS list is also made available 1423 * to userspace. 1424 */ 1425 1426 /** 1427 * struct cfg80211_ssid - SSID description 1428 * @ssid: the SSID 1429 * @ssid_len: length of the ssid 1430 */ 1431 struct cfg80211_ssid { 1432 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1433 u8 ssid_len; 1434 }; 1435 1436 /** 1437 * struct cfg80211_scan_request - scan request description 1438 * 1439 * @ssids: SSIDs to scan for (active scan only) 1440 * @n_ssids: number of SSIDs 1441 * @channels: channels to scan on. 1442 * @n_channels: total number of channels to scan 1443 * @scan_width: channel width for scanning 1444 * @ie: optional information element(s) to add into Probe Request or %NULL 1445 * @ie_len: length of ie in octets 1446 * @flags: bit field of flags controlling operation 1447 * @rates: bitmap of rates to advertise for each band 1448 * @wiphy: the wiphy this was for 1449 * @scan_start: time (in jiffies) when the scan started 1450 * @wdev: the wireless device to scan for 1451 * @aborted: (internal) scan request was notified as aborted 1452 * @notified: (internal) scan request was notified as done or aborted 1453 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 1454 * @mac_addr: MAC address used with randomisation 1455 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1456 * are 0 in the mask should be randomised, bits that are 1 should 1457 * be taken from the @mac_addr 1458 */ 1459 struct cfg80211_scan_request { 1460 struct cfg80211_ssid *ssids; 1461 int n_ssids; 1462 u32 n_channels; 1463 enum nl80211_bss_scan_width scan_width; 1464 const u8 *ie; 1465 size_t ie_len; 1466 u32 flags; 1467 1468 u32 rates[IEEE80211_NUM_BANDS]; 1469 1470 struct wireless_dev *wdev; 1471 1472 u8 mac_addr[ETH_ALEN] __aligned(2); 1473 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1474 1475 /* internal */ 1476 struct wiphy *wiphy; 1477 unsigned long scan_start; 1478 bool aborted, notified; 1479 bool no_cck; 1480 1481 /* keep last */ 1482 struct ieee80211_channel *channels[0]; 1483 }; 1484 1485 static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask) 1486 { 1487 int i; 1488 1489 get_random_bytes(buf, ETH_ALEN); 1490 for (i = 0; i < ETH_ALEN; i++) { 1491 buf[i] &= ~mask[i]; 1492 buf[i] |= addr[i] & mask[i]; 1493 } 1494 } 1495 1496 /** 1497 * struct cfg80211_match_set - sets of attributes to match 1498 * 1499 * @ssid: SSID to be matched; may be zero-length for no match (RSSI only) 1500 * @rssi_thold: don't report scan results below this threshold (in s32 dBm) 1501 */ 1502 struct cfg80211_match_set { 1503 struct cfg80211_ssid ssid; 1504 s32 rssi_thold; 1505 }; 1506 1507 /** 1508 * struct cfg80211_sched_scan_plan - scan plan for scheduled scan 1509 * 1510 * @interval: interval between scheduled scan iterations. In seconds. 1511 * @iterations: number of scan iterations in this scan plan. Zero means 1512 * infinite loop. 1513 * The last scan plan will always have this parameter set to zero, 1514 * all other scan plans will have a finite number of iterations. 1515 */ 1516 struct cfg80211_sched_scan_plan { 1517 u32 interval; 1518 u32 iterations; 1519 }; 1520 1521 /** 1522 * struct cfg80211_sched_scan_request - scheduled scan request description 1523 * 1524 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 1525 * @n_ssids: number of SSIDs 1526 * @n_channels: total number of channels to scan 1527 * @scan_width: channel width for scanning 1528 * @ie: optional information element(s) to add into Probe Request or %NULL 1529 * @ie_len: length of ie in octets 1530 * @flags: bit field of flags controlling operation 1531 * @match_sets: sets of parameters to be matched for a scan result 1532 * entry to be considered valid and to be passed to the host 1533 * (others are filtered out). 1534 * If ommited, all results are passed. 1535 * @n_match_sets: number of match sets 1536 * @wiphy: the wiphy this was for 1537 * @dev: the interface 1538 * @scan_start: start time of the scheduled scan 1539 * @channels: channels to scan 1540 * @min_rssi_thold: for drivers only supporting a single threshold, this 1541 * contains the minimum over all matchsets 1542 * @mac_addr: MAC address used with randomisation 1543 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1544 * are 0 in the mask should be randomised, bits that are 1 should 1545 * be taken from the @mac_addr 1546 * @scan_plans: scan plans to be executed in this scheduled scan. Lowest 1547 * index must be executed first. 1548 * @n_scan_plans: number of scan plans, at least 1. 1549 * @rcu_head: RCU callback used to free the struct 1550 * @owner_nlportid: netlink portid of owner (if this should is a request 1551 * owned by a particular socket) 1552 * @delay: delay in seconds to use before starting the first scan 1553 * cycle. The driver may ignore this parameter and start 1554 * immediately (or at any other time), if this feature is not 1555 * supported. 1556 */ 1557 struct cfg80211_sched_scan_request { 1558 struct cfg80211_ssid *ssids; 1559 int n_ssids; 1560 u32 n_channels; 1561 enum nl80211_bss_scan_width scan_width; 1562 const u8 *ie; 1563 size_t ie_len; 1564 u32 flags; 1565 struct cfg80211_match_set *match_sets; 1566 int n_match_sets; 1567 s32 min_rssi_thold; 1568 u32 delay; 1569 struct cfg80211_sched_scan_plan *scan_plans; 1570 int n_scan_plans; 1571 1572 u8 mac_addr[ETH_ALEN] __aligned(2); 1573 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1574 1575 /* internal */ 1576 struct wiphy *wiphy; 1577 struct net_device *dev; 1578 unsigned long scan_start; 1579 struct rcu_head rcu_head; 1580 u32 owner_nlportid; 1581 1582 /* keep last */ 1583 struct ieee80211_channel *channels[0]; 1584 }; 1585 1586 /** 1587 * enum cfg80211_signal_type - signal type 1588 * 1589 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 1590 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 1591 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 1592 */ 1593 enum cfg80211_signal_type { 1594 CFG80211_SIGNAL_TYPE_NONE, 1595 CFG80211_SIGNAL_TYPE_MBM, 1596 CFG80211_SIGNAL_TYPE_UNSPEC, 1597 }; 1598 1599 /** 1600 * struct cfg80211_inform_bss - BSS inform data 1601 * @chan: channel the frame was received on 1602 * @scan_width: scan width that was used 1603 * @signal: signal strength value, according to the wiphy's 1604 * signal type 1605 * @boottime_ns: timestamp (CLOCK_BOOTTIME) when the information was 1606 * received; should match the time when the frame was actually 1607 * received by the device (not just by the host, in case it was 1608 * buffered on the device) and be accurate to about 10ms. 1609 * If the frame isn't buffered, just passing the return value of 1610 * ktime_get_boot_ns() is likely appropriate. 1611 */ 1612 struct cfg80211_inform_bss { 1613 struct ieee80211_channel *chan; 1614 enum nl80211_bss_scan_width scan_width; 1615 s32 signal; 1616 u64 boottime_ns; 1617 }; 1618 1619 /** 1620 * struct cfg80211_bss_ie_data - BSS entry IE data 1621 * @tsf: TSF contained in the frame that carried these IEs 1622 * @rcu_head: internal use, for freeing 1623 * @len: length of the IEs 1624 * @from_beacon: these IEs are known to come from a beacon 1625 * @data: IE data 1626 */ 1627 struct cfg80211_bss_ies { 1628 u64 tsf; 1629 struct rcu_head rcu_head; 1630 int len; 1631 bool from_beacon; 1632 u8 data[]; 1633 }; 1634 1635 /** 1636 * struct cfg80211_bss - BSS description 1637 * 1638 * This structure describes a BSS (which may also be a mesh network) 1639 * for use in scan results and similar. 1640 * 1641 * @channel: channel this BSS is on 1642 * @scan_width: width of the control channel 1643 * @bssid: BSSID of the BSS 1644 * @beacon_interval: the beacon interval as from the frame 1645 * @capability: the capability field in host byte order 1646 * @ies: the information elements (Note that there is no guarantee that these 1647 * are well-formed!); this is a pointer to either the beacon_ies or 1648 * proberesp_ies depending on whether Probe Response frame has been 1649 * received. It is always non-%NULL. 1650 * @beacon_ies: the information elements from the last Beacon frame 1651 * (implementation note: if @hidden_beacon_bss is set this struct doesn't 1652 * own the beacon_ies, but they're just pointers to the ones from the 1653 * @hidden_beacon_bss struct) 1654 * @proberesp_ies: the information elements from the last Probe Response frame 1655 * @hidden_beacon_bss: in case this BSS struct represents a probe response from 1656 * a BSS that hides the SSID in its beacon, this points to the BSS struct 1657 * that holds the beacon data. @beacon_ies is still valid, of course, and 1658 * points to the same data as hidden_beacon_bss->beacon_ies in that case. 1659 * @signal: signal strength value (type depends on the wiphy's signal_type) 1660 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1661 */ 1662 struct cfg80211_bss { 1663 struct ieee80211_channel *channel; 1664 enum nl80211_bss_scan_width scan_width; 1665 1666 const struct cfg80211_bss_ies __rcu *ies; 1667 const struct cfg80211_bss_ies __rcu *beacon_ies; 1668 const struct cfg80211_bss_ies __rcu *proberesp_ies; 1669 1670 struct cfg80211_bss *hidden_beacon_bss; 1671 1672 s32 signal; 1673 1674 u16 beacon_interval; 1675 u16 capability; 1676 1677 u8 bssid[ETH_ALEN]; 1678 1679 u8 priv[0] __aligned(sizeof(void *)); 1680 }; 1681 1682 /** 1683 * ieee80211_bss_get_ie - find IE with given ID 1684 * @bss: the bss to search 1685 * @ie: the IE ID 1686 * 1687 * Note that the return value is an RCU-protected pointer, so 1688 * rcu_read_lock() must be held when calling this function. 1689 * Return: %NULL if not found. 1690 */ 1691 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1692 1693 1694 /** 1695 * struct cfg80211_auth_request - Authentication request data 1696 * 1697 * This structure provides information needed to complete IEEE 802.11 1698 * authentication. 1699 * 1700 * @bss: The BSS to authenticate with, the callee must obtain a reference 1701 * to it if it needs to keep it. 1702 * @auth_type: Authentication type (algorithm) 1703 * @ie: Extra IEs to add to Authentication frame or %NULL 1704 * @ie_len: Length of ie buffer in octets 1705 * @key_len: length of WEP key for shared key authentication 1706 * @key_idx: index of WEP key for shared key authentication 1707 * @key: WEP key for shared key authentication 1708 * @sae_data: Non-IE data to use with SAE or %NULL. This starts with 1709 * Authentication transaction sequence number field. 1710 * @sae_data_len: Length of sae_data buffer in octets 1711 */ 1712 struct cfg80211_auth_request { 1713 struct cfg80211_bss *bss; 1714 const u8 *ie; 1715 size_t ie_len; 1716 enum nl80211_auth_type auth_type; 1717 const u8 *key; 1718 u8 key_len, key_idx; 1719 const u8 *sae_data; 1720 size_t sae_data_len; 1721 }; 1722 1723 /** 1724 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1725 * 1726 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1727 * @ASSOC_REQ_DISABLE_VHT: Disable VHT 1728 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association 1729 */ 1730 enum cfg80211_assoc_req_flags { 1731 ASSOC_REQ_DISABLE_HT = BIT(0), 1732 ASSOC_REQ_DISABLE_VHT = BIT(1), 1733 ASSOC_REQ_USE_RRM = BIT(2), 1734 }; 1735 1736 /** 1737 * struct cfg80211_assoc_request - (Re)Association request data 1738 * 1739 * This structure provides information needed to complete IEEE 802.11 1740 * (re)association. 1741 * @bss: The BSS to associate with. If the call is successful the driver is 1742 * given a reference that it must give back to cfg80211_send_rx_assoc() 1743 * or to cfg80211_assoc_timeout(). To ensure proper refcounting, new 1744 * association requests while already associating must be rejected. 1745 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1746 * @ie_len: Length of ie buffer in octets 1747 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1748 * @crypto: crypto settings 1749 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1750 * @flags: See &enum cfg80211_assoc_req_flags 1751 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1752 * will be used in ht_capa. Un-supported values will be ignored. 1753 * @ht_capa_mask: The bits of ht_capa which are to be used. 1754 * @vht_capa: VHT capability override 1755 * @vht_capa_mask: VHT capability mask indicating which fields to use 1756 */ 1757 struct cfg80211_assoc_request { 1758 struct cfg80211_bss *bss; 1759 const u8 *ie, *prev_bssid; 1760 size_t ie_len; 1761 struct cfg80211_crypto_settings crypto; 1762 bool use_mfp; 1763 u32 flags; 1764 struct ieee80211_ht_cap ht_capa; 1765 struct ieee80211_ht_cap ht_capa_mask; 1766 struct ieee80211_vht_cap vht_capa, vht_capa_mask; 1767 }; 1768 1769 /** 1770 * struct cfg80211_deauth_request - Deauthentication request data 1771 * 1772 * This structure provides information needed to complete IEEE 802.11 1773 * deauthentication. 1774 * 1775 * @bssid: the BSSID of the BSS to deauthenticate from 1776 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1777 * @ie_len: Length of ie buffer in octets 1778 * @reason_code: The reason code for the deauthentication 1779 * @local_state_change: if set, change local state only and 1780 * do not set a deauth frame 1781 */ 1782 struct cfg80211_deauth_request { 1783 const u8 *bssid; 1784 const u8 *ie; 1785 size_t ie_len; 1786 u16 reason_code; 1787 bool local_state_change; 1788 }; 1789 1790 /** 1791 * struct cfg80211_disassoc_request - Disassociation request data 1792 * 1793 * This structure provides information needed to complete IEEE 802.11 1794 * disassocation. 1795 * 1796 * @bss: the BSS to disassociate from 1797 * @ie: Extra IEs to add to Disassociation frame or %NULL 1798 * @ie_len: Length of ie buffer in octets 1799 * @reason_code: The reason code for the disassociation 1800 * @local_state_change: This is a request for a local state only, i.e., no 1801 * Disassociation frame is to be transmitted. 1802 */ 1803 struct cfg80211_disassoc_request { 1804 struct cfg80211_bss *bss; 1805 const u8 *ie; 1806 size_t ie_len; 1807 u16 reason_code; 1808 bool local_state_change; 1809 }; 1810 1811 /** 1812 * struct cfg80211_ibss_params - IBSS parameters 1813 * 1814 * This structure defines the IBSS parameters for the join_ibss() 1815 * method. 1816 * 1817 * @ssid: The SSID, will always be non-null. 1818 * @ssid_len: The length of the SSID, will always be non-zero. 1819 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1820 * search for IBSSs with a different BSSID. 1821 * @chandef: defines the channel to use if no other IBSS to join can be found 1822 * @channel_fixed: The channel should be fixed -- do not search for 1823 * IBSSs to join on other channels. 1824 * @ie: information element(s) to include in the beacon 1825 * @ie_len: length of that 1826 * @beacon_interval: beacon interval to use 1827 * @privacy: this is a protected network, keys will be configured 1828 * after joining 1829 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1830 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1831 * required to assume that the port is unauthorized until authorized by 1832 * user space. Otherwise, port is marked authorized by default. 1833 * @userspace_handles_dfs: whether user space controls DFS operation, i.e. 1834 * changes the channel when a radar is detected. This is required 1835 * to operate on DFS channels. 1836 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1837 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1838 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1839 * will be used in ht_capa. Un-supported values will be ignored. 1840 * @ht_capa_mask: The bits of ht_capa which are to be used. 1841 */ 1842 struct cfg80211_ibss_params { 1843 const u8 *ssid; 1844 const u8 *bssid; 1845 struct cfg80211_chan_def chandef; 1846 const u8 *ie; 1847 u8 ssid_len, ie_len; 1848 u16 beacon_interval; 1849 u32 basic_rates; 1850 bool channel_fixed; 1851 bool privacy; 1852 bool control_port; 1853 bool userspace_handles_dfs; 1854 int mcast_rate[IEEE80211_NUM_BANDS]; 1855 struct ieee80211_ht_cap ht_capa; 1856 struct ieee80211_ht_cap ht_capa_mask; 1857 }; 1858 1859 /** 1860 * struct cfg80211_connect_params - Connection parameters 1861 * 1862 * This structure provides information needed to complete IEEE 802.11 1863 * authentication and association. 1864 * 1865 * @channel: The channel to use or %NULL if not specified (auto-select based 1866 * on scan results) 1867 * @channel_hint: The channel of the recommended BSS for initial connection or 1868 * %NULL if not specified 1869 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1870 * results) 1871 * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or 1872 * %NULL if not specified. Unlike the @bssid parameter, the driver is 1873 * allowed to ignore this @bssid_hint if it has knowledge of a better BSS 1874 * to use. 1875 * @ssid: SSID 1876 * @ssid_len: Length of ssid in octets 1877 * @auth_type: Authentication type (algorithm) 1878 * @ie: IEs for association request 1879 * @ie_len: Length of assoc_ie in octets 1880 * @privacy: indicates whether privacy-enabled APs should be used 1881 * @mfp: indicate whether management frame protection is used 1882 * @crypto: crypto settings 1883 * @key_len: length of WEP key for shared key authentication 1884 * @key_idx: index of WEP key for shared key authentication 1885 * @key: WEP key for shared key authentication 1886 * @flags: See &enum cfg80211_assoc_req_flags 1887 * @bg_scan_period: Background scan period in seconds 1888 * or -1 to indicate that default value is to be used. 1889 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1890 * will be used in ht_capa. Un-supported values will be ignored. 1891 * @ht_capa_mask: The bits of ht_capa which are to be used. 1892 * @vht_capa: VHT Capability overrides 1893 * @vht_capa_mask: The bits of vht_capa which are to be used. 1894 * @pbss: if set, connect to a PCP instead of AP. Valid for DMG 1895 * networks. 1896 */ 1897 struct cfg80211_connect_params { 1898 struct ieee80211_channel *channel; 1899 struct ieee80211_channel *channel_hint; 1900 const u8 *bssid; 1901 const u8 *bssid_hint; 1902 const u8 *ssid; 1903 size_t ssid_len; 1904 enum nl80211_auth_type auth_type; 1905 const u8 *ie; 1906 size_t ie_len; 1907 bool privacy; 1908 enum nl80211_mfp mfp; 1909 struct cfg80211_crypto_settings crypto; 1910 const u8 *key; 1911 u8 key_len, key_idx; 1912 u32 flags; 1913 int bg_scan_period; 1914 struct ieee80211_ht_cap ht_capa; 1915 struct ieee80211_ht_cap ht_capa_mask; 1916 struct ieee80211_vht_cap vht_capa; 1917 struct ieee80211_vht_cap vht_capa_mask; 1918 bool pbss; 1919 }; 1920 1921 /** 1922 * enum wiphy_params_flags - set_wiphy_params bitfield values 1923 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1924 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1925 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1926 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1927 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1928 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled 1929 */ 1930 enum wiphy_params_flags { 1931 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1932 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1933 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1934 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1935 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1936 WIPHY_PARAM_DYN_ACK = 1 << 5, 1937 }; 1938 1939 /* 1940 * cfg80211_bitrate_mask - masks for bitrate control 1941 */ 1942 struct cfg80211_bitrate_mask { 1943 struct { 1944 u32 legacy; 1945 u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN]; 1946 u16 vht_mcs[NL80211_VHT_NSS_MAX]; 1947 enum nl80211_txrate_gi gi; 1948 } control[IEEE80211_NUM_BANDS]; 1949 }; 1950 /** 1951 * struct cfg80211_pmksa - PMK Security Association 1952 * 1953 * This structure is passed to the set/del_pmksa() method for PMKSA 1954 * caching. 1955 * 1956 * @bssid: The AP's BSSID. 1957 * @pmkid: The PMK material itself. 1958 */ 1959 struct cfg80211_pmksa { 1960 const u8 *bssid; 1961 const u8 *pmkid; 1962 }; 1963 1964 /** 1965 * struct cfg80211_pkt_pattern - packet pattern 1966 * @mask: bitmask where to match pattern and where to ignore bytes, 1967 * one bit per byte, in same format as nl80211 1968 * @pattern: bytes to match where bitmask is 1 1969 * @pattern_len: length of pattern (in bytes) 1970 * @pkt_offset: packet offset (in bytes) 1971 * 1972 * Internal note: @mask and @pattern are allocated in one chunk of 1973 * memory, free @mask only! 1974 */ 1975 struct cfg80211_pkt_pattern { 1976 const u8 *mask, *pattern; 1977 int pattern_len; 1978 int pkt_offset; 1979 }; 1980 1981 /** 1982 * struct cfg80211_wowlan_tcp - TCP connection parameters 1983 * 1984 * @sock: (internal) socket for source port allocation 1985 * @src: source IP address 1986 * @dst: destination IP address 1987 * @dst_mac: destination MAC address 1988 * @src_port: source port 1989 * @dst_port: destination port 1990 * @payload_len: data payload length 1991 * @payload: data payload buffer 1992 * @payload_seq: payload sequence stamping configuration 1993 * @data_interval: interval at which to send data packets 1994 * @wake_len: wakeup payload match length 1995 * @wake_data: wakeup payload match data 1996 * @wake_mask: wakeup payload match mask 1997 * @tokens_size: length of the tokens buffer 1998 * @payload_tok: payload token usage configuration 1999 */ 2000 struct cfg80211_wowlan_tcp { 2001 struct socket *sock; 2002 __be32 src, dst; 2003 u16 src_port, dst_port; 2004 u8 dst_mac[ETH_ALEN]; 2005 int payload_len; 2006 const u8 *payload; 2007 struct nl80211_wowlan_tcp_data_seq payload_seq; 2008 u32 data_interval; 2009 u32 wake_len; 2010 const u8 *wake_data, *wake_mask; 2011 u32 tokens_size; 2012 /* must be last, variable member */ 2013 struct nl80211_wowlan_tcp_data_token payload_tok; 2014 }; 2015 2016 /** 2017 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 2018 * 2019 * This structure defines the enabled WoWLAN triggers for the device. 2020 * @any: wake up on any activity -- special trigger if device continues 2021 * operating as normal during suspend 2022 * @disconnect: wake up if getting disconnected 2023 * @magic_pkt: wake up on receiving magic packet 2024 * @patterns: wake up on receiving packet matching a pattern 2025 * @n_patterns: number of patterns 2026 * @gtk_rekey_failure: wake up on GTK rekey failure 2027 * @eap_identity_req: wake up on EAP identity request packet 2028 * @four_way_handshake: wake up on 4-way handshake 2029 * @rfkill_release: wake up when rfkill is released 2030 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h. 2031 * NULL if not configured. 2032 * @nd_config: configuration for the scan to be used for net detect wake. 2033 */ 2034 struct cfg80211_wowlan { 2035 bool any, disconnect, magic_pkt, gtk_rekey_failure, 2036 eap_identity_req, four_way_handshake, 2037 rfkill_release; 2038 struct cfg80211_pkt_pattern *patterns; 2039 struct cfg80211_wowlan_tcp *tcp; 2040 int n_patterns; 2041 struct cfg80211_sched_scan_request *nd_config; 2042 }; 2043 2044 /** 2045 * struct cfg80211_coalesce_rules - Coalesce rule parameters 2046 * 2047 * This structure defines coalesce rule for the device. 2048 * @delay: maximum coalescing delay in msecs. 2049 * @condition: condition for packet coalescence. 2050 * see &enum nl80211_coalesce_condition. 2051 * @patterns: array of packet patterns 2052 * @n_patterns: number of patterns 2053 */ 2054 struct cfg80211_coalesce_rules { 2055 int delay; 2056 enum nl80211_coalesce_condition condition; 2057 struct cfg80211_pkt_pattern *patterns; 2058 int n_patterns; 2059 }; 2060 2061 /** 2062 * struct cfg80211_coalesce - Packet coalescing settings 2063 * 2064 * This structure defines coalescing settings. 2065 * @rules: array of coalesce rules 2066 * @n_rules: number of rules 2067 */ 2068 struct cfg80211_coalesce { 2069 struct cfg80211_coalesce_rules *rules; 2070 int n_rules; 2071 }; 2072 2073 /** 2074 * struct cfg80211_wowlan_nd_match - information about the match 2075 * 2076 * @ssid: SSID of the match that triggered the wake up 2077 * @n_channels: Number of channels where the match occurred. This 2078 * value may be zero if the driver can't report the channels. 2079 * @channels: center frequencies of the channels where a match 2080 * occurred (in MHz) 2081 */ 2082 struct cfg80211_wowlan_nd_match { 2083 struct cfg80211_ssid ssid; 2084 int n_channels; 2085 u32 channels[]; 2086 }; 2087 2088 /** 2089 * struct cfg80211_wowlan_nd_info - net detect wake up information 2090 * 2091 * @n_matches: Number of match information instances provided in 2092 * @matches. This value may be zero if the driver can't provide 2093 * match information. 2094 * @matches: Array of pointers to matches containing information about 2095 * the matches that triggered the wake up. 2096 */ 2097 struct cfg80211_wowlan_nd_info { 2098 int n_matches; 2099 struct cfg80211_wowlan_nd_match *matches[]; 2100 }; 2101 2102 /** 2103 * struct cfg80211_wowlan_wakeup - wakeup report 2104 * @disconnect: woke up by getting disconnected 2105 * @magic_pkt: woke up by receiving magic packet 2106 * @gtk_rekey_failure: woke up by GTK rekey failure 2107 * @eap_identity_req: woke up by EAP identity request packet 2108 * @four_way_handshake: woke up by 4-way handshake 2109 * @rfkill_release: woke up by rfkill being released 2110 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern 2111 * @packet_present_len: copied wakeup packet data 2112 * @packet_len: original wakeup packet length 2113 * @packet: The packet causing the wakeup, if any. 2114 * @packet_80211: For pattern match, magic packet and other data 2115 * frame triggers an 802.3 frame should be reported, for 2116 * disconnect due to deauth 802.11 frame. This indicates which 2117 * it is. 2118 * @tcp_match: TCP wakeup packet received 2119 * @tcp_connlost: TCP connection lost or failed to establish 2120 * @tcp_nomoretokens: TCP data ran out of tokens 2121 * @net_detect: if not %NULL, woke up because of net detect 2122 */ 2123 struct cfg80211_wowlan_wakeup { 2124 bool disconnect, magic_pkt, gtk_rekey_failure, 2125 eap_identity_req, four_way_handshake, 2126 rfkill_release, packet_80211, 2127 tcp_match, tcp_connlost, tcp_nomoretokens; 2128 s32 pattern_idx; 2129 u32 packet_present_len, packet_len; 2130 const void *packet; 2131 struct cfg80211_wowlan_nd_info *net_detect; 2132 }; 2133 2134 /** 2135 * struct cfg80211_gtk_rekey_data - rekey data 2136 * @kek: key encryption key (NL80211_KEK_LEN bytes) 2137 * @kck: key confirmation key (NL80211_KCK_LEN bytes) 2138 * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes) 2139 */ 2140 struct cfg80211_gtk_rekey_data { 2141 const u8 *kek, *kck, *replay_ctr; 2142 }; 2143 2144 /** 2145 * struct cfg80211_update_ft_ies_params - FT IE Information 2146 * 2147 * This structure provides information needed to update the fast transition IE 2148 * 2149 * @md: The Mobility Domain ID, 2 Octet value 2150 * @ie: Fast Transition IEs 2151 * @ie_len: Length of ft_ie in octets 2152 */ 2153 struct cfg80211_update_ft_ies_params { 2154 u16 md; 2155 const u8 *ie; 2156 size_t ie_len; 2157 }; 2158 2159 /** 2160 * struct cfg80211_mgmt_tx_params - mgmt tx parameters 2161 * 2162 * This structure provides information needed to transmit a mgmt frame 2163 * 2164 * @chan: channel to use 2165 * @offchan: indicates wether off channel operation is required 2166 * @wait: duration for ROC 2167 * @buf: buffer to transmit 2168 * @len: buffer length 2169 * @no_cck: don't use cck rates for this frame 2170 * @dont_wait_for_ack: tells the low level not to wait for an ack 2171 * @n_csa_offsets: length of csa_offsets array 2172 * @csa_offsets: array of all the csa offsets in the frame 2173 */ 2174 struct cfg80211_mgmt_tx_params { 2175 struct ieee80211_channel *chan; 2176 bool offchan; 2177 unsigned int wait; 2178 const u8 *buf; 2179 size_t len; 2180 bool no_cck; 2181 bool dont_wait_for_ack; 2182 int n_csa_offsets; 2183 const u16 *csa_offsets; 2184 }; 2185 2186 /** 2187 * struct cfg80211_dscp_exception - DSCP exception 2188 * 2189 * @dscp: DSCP value that does not adhere to the user priority range definition 2190 * @up: user priority value to which the corresponding DSCP value belongs 2191 */ 2192 struct cfg80211_dscp_exception { 2193 u8 dscp; 2194 u8 up; 2195 }; 2196 2197 /** 2198 * struct cfg80211_dscp_range - DSCP range definition for user priority 2199 * 2200 * @low: lowest DSCP value of this user priority range, inclusive 2201 * @high: highest DSCP value of this user priority range, inclusive 2202 */ 2203 struct cfg80211_dscp_range { 2204 u8 low; 2205 u8 high; 2206 }; 2207 2208 /* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */ 2209 #define IEEE80211_QOS_MAP_MAX_EX 21 2210 #define IEEE80211_QOS_MAP_LEN_MIN 16 2211 #define IEEE80211_QOS_MAP_LEN_MAX \ 2212 (IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX) 2213 2214 /** 2215 * struct cfg80211_qos_map - QoS Map Information 2216 * 2217 * This struct defines the Interworking QoS map setting for DSCP values 2218 * 2219 * @num_des: number of DSCP exceptions (0..21) 2220 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from 2221 * the user priority DSCP range definition 2222 * @up: DSCP range definition for a particular user priority 2223 */ 2224 struct cfg80211_qos_map { 2225 u8 num_des; 2226 struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX]; 2227 struct cfg80211_dscp_range up[8]; 2228 }; 2229 2230 /** 2231 * struct cfg80211_ops - backend description for wireless configuration 2232 * 2233 * This struct is registered by fullmac card drivers and/or wireless stacks 2234 * in order to handle configuration requests on their interfaces. 2235 * 2236 * All callbacks except where otherwise noted should return 0 2237 * on success or a negative error code. 2238 * 2239 * All operations are currently invoked under rtnl for consistency with the 2240 * wireless extensions but this is subject to reevaluation as soon as this 2241 * code is used more widely and we have a first user without wext. 2242 * 2243 * @suspend: wiphy device needs to be suspended. The variable @wow will 2244 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 2245 * configured for the device. 2246 * @resume: wiphy device needs to be resumed 2247 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback 2248 * to call device_set_wakeup_enable() to enable/disable wakeup from 2249 * the device. 2250 * 2251 * @add_virtual_intf: create a new virtual interface with the given name, 2252 * must set the struct wireless_dev's iftype. Beware: You must create 2253 * the new netdev in the wiphy's network namespace! Returns the struct 2254 * wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must 2255 * also set the address member in the wdev. 2256 * 2257 * @del_virtual_intf: remove the virtual interface 2258 * 2259 * @change_virtual_intf: change type/configuration of virtual interface, 2260 * keep the struct wireless_dev's iftype updated. 2261 * 2262 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 2263 * when adding a group key. 2264 * 2265 * @get_key: get information about the key with the given parameters. 2266 * @mac_addr will be %NULL when requesting information for a group 2267 * key. All pointers given to the @callback function need not be valid 2268 * after it returns. This function should return an error if it is 2269 * not possible to retrieve the key, -ENOENT if it doesn't exist. 2270 * 2271 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 2272 * and @key_index, return -ENOENT if the key doesn't exist. 2273 * 2274 * @set_default_key: set the default key on an interface 2275 * 2276 * @set_default_mgmt_key: set the default management frame key on an interface 2277 * 2278 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 2279 * 2280 * @start_ap: Start acting in AP mode defined by the parameters. 2281 * @change_beacon: Change the beacon parameters for an access point mode 2282 * interface. This should reject the call when AP mode wasn't started. 2283 * @stop_ap: Stop being an AP, including stopping beaconing. 2284 * 2285 * @add_station: Add a new station. 2286 * @del_station: Remove a station 2287 * @change_station: Modify a given station. Note that flags changes are not much 2288 * validated in cfg80211, in particular the auth/assoc/authorized flags 2289 * might come to the driver in invalid combinations -- make sure to check 2290 * them, also against the existing state! Drivers must call 2291 * cfg80211_check_station_change() to validate the information. 2292 * @get_station: get station information for the station identified by @mac 2293 * @dump_station: dump station callback -- resume dump at index @idx 2294 * 2295 * @add_mpath: add a fixed mesh path 2296 * @del_mpath: delete a given mesh path 2297 * @change_mpath: change a given mesh path 2298 * @get_mpath: get a mesh path for the given parameters 2299 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 2300 * @get_mpp: get a mesh proxy path for the given parameters 2301 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx 2302 * @join_mesh: join the mesh network with the specified parameters 2303 * (invoked with the wireless_dev mutex held) 2304 * @leave_mesh: leave the current mesh network 2305 * (invoked with the wireless_dev mutex held) 2306 * 2307 * @get_mesh_config: Get the current mesh configuration 2308 * 2309 * @update_mesh_config: Update mesh parameters on a running mesh. 2310 * The mask is a bitfield which tells us which parameters to 2311 * set, and which to leave alone. 2312 * 2313 * @change_bss: Modify parameters for a given BSS. 2314 * 2315 * @set_txq_params: Set TX queue parameters 2316 * 2317 * @libertas_set_mesh_channel: Only for backward compatibility for libertas, 2318 * as it doesn't implement join_mesh and needs to set the channel to 2319 * join the mesh instead. 2320 * 2321 * @set_monitor_channel: Set the monitor mode channel for the device. If other 2322 * interfaces are active this callback should reject the configuration. 2323 * If no interfaces are active or the device is down, the channel should 2324 * be stored for when a monitor interface becomes active. 2325 * 2326 * @scan: Request to do a scan. If returning zero, the scan request is given 2327 * the driver, and will be valid until passed to cfg80211_scan_done(). 2328 * For scan results, call cfg80211_inform_bss(); you can call this outside 2329 * the scan/scan_done bracket too. 2330 * @abort_scan: Tell the driver to abort an ongoing scan. The driver shall 2331 * indicate the status of the scan through cfg80211_scan_done(). 2332 * 2333 * @auth: Request to authenticate with the specified peer 2334 * (invoked with the wireless_dev mutex held) 2335 * @assoc: Request to (re)associate with the specified peer 2336 * (invoked with the wireless_dev mutex held) 2337 * @deauth: Request to deauthenticate from the specified peer 2338 * (invoked with the wireless_dev mutex held) 2339 * @disassoc: Request to disassociate from the specified peer 2340 * (invoked with the wireless_dev mutex held) 2341 * 2342 * @connect: Connect to the ESS with the specified parameters. When connected, 2343 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 2344 * If the connection fails for some reason, call cfg80211_connect_result() 2345 * with the status from the AP. 2346 * (invoked with the wireless_dev mutex held) 2347 * @disconnect: Disconnect from the BSS/ESS. 2348 * (invoked with the wireless_dev mutex held) 2349 * 2350 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 2351 * cfg80211_ibss_joined(), also call that function when changing BSSID due 2352 * to a merge. 2353 * (invoked with the wireless_dev mutex held) 2354 * @leave_ibss: Leave the IBSS. 2355 * (invoked with the wireless_dev mutex held) 2356 * 2357 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or 2358 * MESH mode) 2359 * 2360 * @set_wiphy_params: Notify that wiphy parameters have changed; 2361 * @changed bitfield (see &enum wiphy_params_flags) describes which values 2362 * have changed. The actual parameter values are available in 2363 * struct wiphy. If returning an error, no value should be changed. 2364 * 2365 * @set_tx_power: set the transmit power according to the parameters, 2366 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). The 2367 * wdev may be %NULL if power was set for the wiphy, and will 2368 * always be %NULL unless the driver supports per-vif TX power 2369 * (as advertised by the nl80211 feature flag.) 2370 * @get_tx_power: store the current TX power into the dbm variable; 2371 * return 0 if successful 2372 * 2373 * @set_wds_peer: set the WDS peer for a WDS interface 2374 * 2375 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 2376 * functions to adjust rfkill hw state 2377 * 2378 * @dump_survey: get site survey information. 2379 * 2380 * @remain_on_channel: Request the driver to remain awake on the specified 2381 * channel for the specified duration to complete an off-channel 2382 * operation (e.g., public action frame exchange). When the driver is 2383 * ready on the requested channel, it must indicate this with an event 2384 * notification by calling cfg80211_ready_on_channel(). 2385 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 2386 * This allows the operation to be terminated prior to timeout based on 2387 * the duration value. 2388 * @mgmt_tx: Transmit a management frame. 2389 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 2390 * frame on another channel 2391 * 2392 * @testmode_cmd: run a test mode command; @wdev may be %NULL 2393 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 2394 * used by the function, but 0 and 1 must not be touched. Additionally, 2395 * return error codes other than -ENOBUFS and -ENOENT will terminate the 2396 * dump and return to userspace with an error, so be careful. If any data 2397 * was passed in from userspace then the data/len arguments will be present 2398 * and point to the data contained in %NL80211_ATTR_TESTDATA. 2399 * 2400 * @set_bitrate_mask: set the bitrate mask configuration 2401 * 2402 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 2403 * devices running firmwares capable of generating the (re) association 2404 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 2405 * @del_pmksa: Delete a cached PMKID. 2406 * @flush_pmksa: Flush all cached PMKIDs. 2407 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 2408 * allows the driver to adjust the dynamic ps timeout value. 2409 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 2410 * After configuration, the driver should (soon) send an event indicating 2411 * the current level is above/below the configured threshold; this may 2412 * need some care when the configuration is changed (without first being 2413 * disabled.) 2414 * @set_cqm_txe_config: Configure connection quality monitor TX error 2415 * thresholds. 2416 * @sched_scan_start: Tell the driver to start a scheduled scan. 2417 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This 2418 * call must stop the scheduled scan and be ready for starting a new one 2419 * before it returns, i.e. @sched_scan_start may be called immediately 2420 * after that again and should not fail in that case. The driver should 2421 * not call cfg80211_sched_scan_stopped() for a requested stop (when this 2422 * method returns 0.) 2423 * 2424 * @mgmt_frame_register: Notify driver that a management frame type was 2425 * registered. The callback is allowed to sleep. 2426 * 2427 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2428 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2429 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2430 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2431 * 2432 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2433 * 2434 * @tdls_mgmt: Transmit a TDLS management frame. 2435 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 2436 * 2437 * @probe_client: probe an associated client, must return a cookie that it 2438 * later passes to cfg80211_probe_status(). 2439 * 2440 * @set_noack_map: Set the NoAck Map for the TIDs. 2441 * 2442 * @get_channel: Get the current operating channel for the virtual interface. 2443 * For monitor interfaces, it should return %NULL unless there's a single 2444 * current monitoring channel. 2445 * 2446 * @start_p2p_device: Start the given P2P device. 2447 * @stop_p2p_device: Stop the given P2P device. 2448 * 2449 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode. 2450 * Parameters include ACL policy, an array of MAC address of stations 2451 * and the number of MAC addresses. If there is already a list in driver 2452 * this new list replaces the existing one. Driver has to clear its ACL 2453 * when number of MAC addresses entries is passed as 0. Drivers which 2454 * advertise the support for MAC based ACL have to implement this callback. 2455 * 2456 * @start_radar_detection: Start radar detection in the driver. 2457 * 2458 * @update_ft_ies: Provide updated Fast BSS Transition information to the 2459 * driver. If the SME is in the driver/firmware, this information can be 2460 * used in building Authentication and Reassociation Request frames. 2461 * 2462 * @crit_proto_start: Indicates a critical protocol needs more link reliability 2463 * for a given duration (milliseconds). The protocol is provided so the 2464 * driver can take the most appropriate actions. 2465 * @crit_proto_stop: Indicates critical protocol no longer needs increased link 2466 * reliability. This operation can not fail. 2467 * @set_coalesce: Set coalesce parameters. 2468 * 2469 * @channel_switch: initiate channel-switch procedure (with CSA). Driver is 2470 * responsible for veryfing if the switch is possible. Since this is 2471 * inherently tricky driver may decide to disconnect an interface later 2472 * with cfg80211_stop_iface(). This doesn't mean driver can accept 2473 * everything. It should do it's best to verify requests and reject them 2474 * as soon as possible. 2475 * 2476 * @set_qos_map: Set QoS mapping information to the driver 2477 * 2478 * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the 2479 * given interface This is used e.g. for dynamic HT 20/40 MHz channel width 2480 * changes during the lifetime of the BSS. 2481 * 2482 * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device 2483 * with the given parameters; action frame exchange has been handled by 2484 * userspace so this just has to modify the TX path to take the TS into 2485 * account. 2486 * If the admitted time is 0 just validate the parameters to make sure 2487 * the session can be created at all; it is valid to just always return 2488 * success for that but that may result in inefficient behaviour (handshake 2489 * with the peer followed by immediate teardown when the addition is later 2490 * rejected) 2491 * @del_tx_ts: remove an existing TX TS 2492 * 2493 * @join_ocb: join the OCB network with the specified parameters 2494 * (invoked with the wireless_dev mutex held) 2495 * @leave_ocb: leave the current OCB network 2496 * (invoked with the wireless_dev mutex held) 2497 * 2498 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver 2499 * is responsible for continually initiating channel-switching operations 2500 * and returning to the base channel for communication with the AP. 2501 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both 2502 * peers must be on the base channel when the call completes. 2503 */ 2504 struct cfg80211_ops { 2505 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 2506 int (*resume)(struct wiphy *wiphy); 2507 void (*set_wakeup)(struct wiphy *wiphy, bool enabled); 2508 2509 struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy, 2510 const char *name, 2511 unsigned char name_assign_type, 2512 enum nl80211_iftype type, 2513 u32 *flags, 2514 struct vif_params *params); 2515 int (*del_virtual_intf)(struct wiphy *wiphy, 2516 struct wireless_dev *wdev); 2517 int (*change_virtual_intf)(struct wiphy *wiphy, 2518 struct net_device *dev, 2519 enum nl80211_iftype type, u32 *flags, 2520 struct vif_params *params); 2521 2522 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 2523 u8 key_index, bool pairwise, const u8 *mac_addr, 2524 struct key_params *params); 2525 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 2526 u8 key_index, bool pairwise, const u8 *mac_addr, 2527 void *cookie, 2528 void (*callback)(void *cookie, struct key_params*)); 2529 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 2530 u8 key_index, bool pairwise, const u8 *mac_addr); 2531 int (*set_default_key)(struct wiphy *wiphy, 2532 struct net_device *netdev, 2533 u8 key_index, bool unicast, bool multicast); 2534 int (*set_default_mgmt_key)(struct wiphy *wiphy, 2535 struct net_device *netdev, 2536 u8 key_index); 2537 2538 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 2539 struct cfg80211_ap_settings *settings); 2540 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 2541 struct cfg80211_beacon_data *info); 2542 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 2543 2544 2545 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 2546 const u8 *mac, 2547 struct station_parameters *params); 2548 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 2549 struct station_del_parameters *params); 2550 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 2551 const u8 *mac, 2552 struct station_parameters *params); 2553 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 2554 const u8 *mac, struct station_info *sinfo); 2555 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 2556 int idx, u8 *mac, struct station_info *sinfo); 2557 2558 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 2559 const u8 *dst, const u8 *next_hop); 2560 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 2561 const u8 *dst); 2562 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 2563 const u8 *dst, const u8 *next_hop); 2564 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 2565 u8 *dst, u8 *next_hop, struct mpath_info *pinfo); 2566 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 2567 int idx, u8 *dst, u8 *next_hop, 2568 struct mpath_info *pinfo); 2569 int (*get_mpp)(struct wiphy *wiphy, struct net_device *dev, 2570 u8 *dst, u8 *mpp, struct mpath_info *pinfo); 2571 int (*dump_mpp)(struct wiphy *wiphy, struct net_device *dev, 2572 int idx, u8 *dst, u8 *mpp, 2573 struct mpath_info *pinfo); 2574 int (*get_mesh_config)(struct wiphy *wiphy, 2575 struct net_device *dev, 2576 struct mesh_config *conf); 2577 int (*update_mesh_config)(struct wiphy *wiphy, 2578 struct net_device *dev, u32 mask, 2579 const struct mesh_config *nconf); 2580 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 2581 const struct mesh_config *conf, 2582 const struct mesh_setup *setup); 2583 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 2584 2585 int (*join_ocb)(struct wiphy *wiphy, struct net_device *dev, 2586 struct ocb_setup *setup); 2587 int (*leave_ocb)(struct wiphy *wiphy, struct net_device *dev); 2588 2589 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 2590 struct bss_parameters *params); 2591 2592 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 2593 struct ieee80211_txq_params *params); 2594 2595 int (*libertas_set_mesh_channel)(struct wiphy *wiphy, 2596 struct net_device *dev, 2597 struct ieee80211_channel *chan); 2598 2599 int (*set_monitor_channel)(struct wiphy *wiphy, 2600 struct cfg80211_chan_def *chandef); 2601 2602 int (*scan)(struct wiphy *wiphy, 2603 struct cfg80211_scan_request *request); 2604 void (*abort_scan)(struct wiphy *wiphy, struct wireless_dev *wdev); 2605 2606 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 2607 struct cfg80211_auth_request *req); 2608 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 2609 struct cfg80211_assoc_request *req); 2610 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 2611 struct cfg80211_deauth_request *req); 2612 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 2613 struct cfg80211_disassoc_request *req); 2614 2615 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 2616 struct cfg80211_connect_params *sme); 2617 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 2618 u16 reason_code); 2619 2620 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 2621 struct cfg80211_ibss_params *params); 2622 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 2623 2624 int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, 2625 int rate[IEEE80211_NUM_BANDS]); 2626 2627 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 2628 2629 int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2630 enum nl80211_tx_power_setting type, int mbm); 2631 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2632 int *dbm); 2633 2634 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 2635 const u8 *addr); 2636 2637 void (*rfkill_poll)(struct wiphy *wiphy); 2638 2639 #ifdef CONFIG_NL80211_TESTMODE 2640 int (*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev, 2641 void *data, int len); 2642 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 2643 struct netlink_callback *cb, 2644 void *data, int len); 2645 #endif 2646 2647 int (*set_bitrate_mask)(struct wiphy *wiphy, 2648 struct net_device *dev, 2649 const u8 *peer, 2650 const struct cfg80211_bitrate_mask *mask); 2651 2652 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 2653 int idx, struct survey_info *info); 2654 2655 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2656 struct cfg80211_pmksa *pmksa); 2657 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2658 struct cfg80211_pmksa *pmksa); 2659 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 2660 2661 int (*remain_on_channel)(struct wiphy *wiphy, 2662 struct wireless_dev *wdev, 2663 struct ieee80211_channel *chan, 2664 unsigned int duration, 2665 u64 *cookie); 2666 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 2667 struct wireless_dev *wdev, 2668 u64 cookie); 2669 2670 int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev, 2671 struct cfg80211_mgmt_tx_params *params, 2672 u64 *cookie); 2673 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 2674 struct wireless_dev *wdev, 2675 u64 cookie); 2676 2677 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2678 bool enabled, int timeout); 2679 2680 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 2681 struct net_device *dev, 2682 s32 rssi_thold, u32 rssi_hyst); 2683 2684 int (*set_cqm_txe_config)(struct wiphy *wiphy, 2685 struct net_device *dev, 2686 u32 rate, u32 pkts, u32 intvl); 2687 2688 void (*mgmt_frame_register)(struct wiphy *wiphy, 2689 struct wireless_dev *wdev, 2690 u16 frame_type, bool reg); 2691 2692 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 2693 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 2694 2695 int (*sched_scan_start)(struct wiphy *wiphy, 2696 struct net_device *dev, 2697 struct cfg80211_sched_scan_request *request); 2698 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 2699 2700 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 2701 struct cfg80211_gtk_rekey_data *data); 2702 2703 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2704 const u8 *peer, u8 action_code, u8 dialog_token, 2705 u16 status_code, u32 peer_capability, 2706 bool initiator, const u8 *buf, size_t len); 2707 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 2708 const u8 *peer, enum nl80211_tdls_operation oper); 2709 2710 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 2711 const u8 *peer, u64 *cookie); 2712 2713 int (*set_noack_map)(struct wiphy *wiphy, 2714 struct net_device *dev, 2715 u16 noack_map); 2716 2717 int (*get_channel)(struct wiphy *wiphy, 2718 struct wireless_dev *wdev, 2719 struct cfg80211_chan_def *chandef); 2720 2721 int (*start_p2p_device)(struct wiphy *wiphy, 2722 struct wireless_dev *wdev); 2723 void (*stop_p2p_device)(struct wiphy *wiphy, 2724 struct wireless_dev *wdev); 2725 2726 int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev, 2727 const struct cfg80211_acl_data *params); 2728 2729 int (*start_radar_detection)(struct wiphy *wiphy, 2730 struct net_device *dev, 2731 struct cfg80211_chan_def *chandef, 2732 u32 cac_time_ms); 2733 int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev, 2734 struct cfg80211_update_ft_ies_params *ftie); 2735 int (*crit_proto_start)(struct wiphy *wiphy, 2736 struct wireless_dev *wdev, 2737 enum nl80211_crit_proto_id protocol, 2738 u16 duration); 2739 void (*crit_proto_stop)(struct wiphy *wiphy, 2740 struct wireless_dev *wdev); 2741 int (*set_coalesce)(struct wiphy *wiphy, 2742 struct cfg80211_coalesce *coalesce); 2743 2744 int (*channel_switch)(struct wiphy *wiphy, 2745 struct net_device *dev, 2746 struct cfg80211_csa_settings *params); 2747 2748 int (*set_qos_map)(struct wiphy *wiphy, 2749 struct net_device *dev, 2750 struct cfg80211_qos_map *qos_map); 2751 2752 int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev, 2753 struct cfg80211_chan_def *chandef); 2754 2755 int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2756 u8 tsid, const u8 *peer, u8 user_prio, 2757 u16 admitted_time); 2758 int (*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2759 u8 tsid, const u8 *peer); 2760 2761 int (*tdls_channel_switch)(struct wiphy *wiphy, 2762 struct net_device *dev, 2763 const u8 *addr, u8 oper_class, 2764 struct cfg80211_chan_def *chandef); 2765 void (*tdls_cancel_channel_switch)(struct wiphy *wiphy, 2766 struct net_device *dev, 2767 const u8 *addr); 2768 }; 2769 2770 /* 2771 * wireless hardware and networking interfaces structures 2772 * and registration/helper functions 2773 */ 2774 2775 /** 2776 * enum wiphy_flags - wiphy capability flags 2777 * 2778 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 2779 * wiphy at all 2780 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 2781 * by default -- this flag will be set depending on the kernel's default 2782 * on wiphy_new(), but can be changed by the driver if it has a good 2783 * reason to override the default 2784 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 2785 * on a VLAN interface) 2786 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 2787 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 2788 * control port protocol ethertype. The device also honours the 2789 * control_port_no_encrypt flag. 2790 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 2791 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 2792 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 2793 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 2794 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 2795 * firmware. 2796 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 2797 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 2798 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 2799 * link setup/discovery operations internally. Setup, discovery and 2800 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 2801 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 2802 * used for asking the driver/firmware to perform a TDLS operation. 2803 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 2804 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 2805 * when there are virtual interfaces in AP mode by calling 2806 * cfg80211_report_obss_beacon(). 2807 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 2808 * responds to probe-requests in hardware. 2809 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 2810 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 2811 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels. 2812 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in 2813 * beaconing mode (AP, IBSS, Mesh, ...). 2814 */ 2815 enum wiphy_flags { 2816 /* use hole at 0 */ 2817 /* use hole at 1 */ 2818 /* use hole at 2 */ 2819 WIPHY_FLAG_NETNS_OK = BIT(3), 2820 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 2821 WIPHY_FLAG_4ADDR_AP = BIT(5), 2822 WIPHY_FLAG_4ADDR_STATION = BIT(6), 2823 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 2824 WIPHY_FLAG_IBSS_RSN = BIT(8), 2825 WIPHY_FLAG_MESH_AUTH = BIT(10), 2826 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 2827 /* use hole at 12 */ 2828 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 2829 WIPHY_FLAG_AP_UAPSD = BIT(14), 2830 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 2831 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 2832 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 2833 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 2834 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 2835 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 2836 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 2837 WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22), 2838 WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23), 2839 }; 2840 2841 /** 2842 * struct ieee80211_iface_limit - limit on certain interface types 2843 * @max: maximum number of interfaces of these types 2844 * @types: interface types (bits) 2845 */ 2846 struct ieee80211_iface_limit { 2847 u16 max; 2848 u16 types; 2849 }; 2850 2851 /** 2852 * struct ieee80211_iface_combination - possible interface combination 2853 * @limits: limits for the given interface types 2854 * @n_limits: number of limitations 2855 * @num_different_channels: can use up to this many different channels 2856 * @max_interfaces: maximum number of interfaces in total allowed in this 2857 * group 2858 * @beacon_int_infra_match: In this combination, the beacon intervals 2859 * between infrastructure and AP types must match. This is required 2860 * only in special cases. 2861 * @radar_detect_widths: bitmap of channel widths supported for radar detection 2862 * @radar_detect_regions: bitmap of regions supported for radar detection 2863 * 2864 * With this structure the driver can describe which interface 2865 * combinations it supports concurrently. 2866 * 2867 * Examples: 2868 * 2869 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 2870 * 2871 * struct ieee80211_iface_limit limits1[] = { 2872 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2873 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 2874 * }; 2875 * struct ieee80211_iface_combination combination1 = { 2876 * .limits = limits1, 2877 * .n_limits = ARRAY_SIZE(limits1), 2878 * .max_interfaces = 2, 2879 * .beacon_int_infra_match = true, 2880 * }; 2881 * 2882 * 2883 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 2884 * 2885 * struct ieee80211_iface_limit limits2[] = { 2886 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 2887 * BIT(NL80211_IFTYPE_P2P_GO), }, 2888 * }; 2889 * struct ieee80211_iface_combination combination2 = { 2890 * .limits = limits2, 2891 * .n_limits = ARRAY_SIZE(limits2), 2892 * .max_interfaces = 8, 2893 * .num_different_channels = 1, 2894 * }; 2895 * 2896 * 2897 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 2898 * 2899 * This allows for an infrastructure connection and three P2P connections. 2900 * 2901 * struct ieee80211_iface_limit limits3[] = { 2902 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2903 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 2904 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 2905 * }; 2906 * struct ieee80211_iface_combination combination3 = { 2907 * .limits = limits3, 2908 * .n_limits = ARRAY_SIZE(limits3), 2909 * .max_interfaces = 4, 2910 * .num_different_channels = 2, 2911 * }; 2912 */ 2913 struct ieee80211_iface_combination { 2914 const struct ieee80211_iface_limit *limits; 2915 u32 num_different_channels; 2916 u16 max_interfaces; 2917 u8 n_limits; 2918 bool beacon_int_infra_match; 2919 u8 radar_detect_widths; 2920 u8 radar_detect_regions; 2921 }; 2922 2923 struct ieee80211_txrx_stypes { 2924 u16 tx, rx; 2925 }; 2926 2927 /** 2928 * enum wiphy_wowlan_support_flags - WoWLAN support flags 2929 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 2930 * trigger that keeps the device operating as-is and 2931 * wakes up the host on any activity, for example a 2932 * received packet that passed filtering; note that the 2933 * packet should be preserved in that case 2934 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 2935 * (see nl80211.h) 2936 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 2937 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 2938 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 2939 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 2940 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 2941 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 2942 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection 2943 */ 2944 enum wiphy_wowlan_support_flags { 2945 WIPHY_WOWLAN_ANY = BIT(0), 2946 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 2947 WIPHY_WOWLAN_DISCONNECT = BIT(2), 2948 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 2949 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 2950 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 2951 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 2952 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 2953 WIPHY_WOWLAN_NET_DETECT = BIT(8), 2954 }; 2955 2956 struct wiphy_wowlan_tcp_support { 2957 const struct nl80211_wowlan_tcp_data_token_feature *tok; 2958 u32 data_payload_max; 2959 u32 data_interval_max; 2960 u32 wake_payload_max; 2961 bool seq; 2962 }; 2963 2964 /** 2965 * struct wiphy_wowlan_support - WoWLAN support data 2966 * @flags: see &enum wiphy_wowlan_support_flags 2967 * @n_patterns: number of supported wakeup patterns 2968 * (see nl80211.h for the pattern definition) 2969 * @pattern_max_len: maximum length of each pattern 2970 * @pattern_min_len: minimum length of each pattern 2971 * @max_pkt_offset: maximum Rx packet offset 2972 * @max_nd_match_sets: maximum number of matchsets for net-detect, 2973 * similar, but not necessarily identical, to max_match_sets for 2974 * scheduled scans. 2975 * See &struct cfg80211_sched_scan_request.@match_sets for more 2976 * details. 2977 * @tcp: TCP wakeup support information 2978 */ 2979 struct wiphy_wowlan_support { 2980 u32 flags; 2981 int n_patterns; 2982 int pattern_max_len; 2983 int pattern_min_len; 2984 int max_pkt_offset; 2985 int max_nd_match_sets; 2986 const struct wiphy_wowlan_tcp_support *tcp; 2987 }; 2988 2989 /** 2990 * struct wiphy_coalesce_support - coalesce support data 2991 * @n_rules: maximum number of coalesce rules 2992 * @max_delay: maximum supported coalescing delay in msecs 2993 * @n_patterns: number of supported patterns in a rule 2994 * (see nl80211.h for the pattern definition) 2995 * @pattern_max_len: maximum length of each pattern 2996 * @pattern_min_len: minimum length of each pattern 2997 * @max_pkt_offset: maximum Rx packet offset 2998 */ 2999 struct wiphy_coalesce_support { 3000 int n_rules; 3001 int max_delay; 3002 int n_patterns; 3003 int pattern_max_len; 3004 int pattern_min_len; 3005 int max_pkt_offset; 3006 }; 3007 3008 /** 3009 * enum wiphy_vendor_command_flags - validation flags for vendor commands 3010 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev 3011 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev 3012 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running 3013 * (must be combined with %_WDEV or %_NETDEV) 3014 */ 3015 enum wiphy_vendor_command_flags { 3016 WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0), 3017 WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1), 3018 WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2), 3019 }; 3020 3021 /** 3022 * struct wiphy_vendor_command - vendor command definition 3023 * @info: vendor command identifying information, as used in nl80211 3024 * @flags: flags, see &enum wiphy_vendor_command_flags 3025 * @doit: callback for the operation, note that wdev is %NULL if the 3026 * flags didn't ask for a wdev and non-%NULL otherwise; the data 3027 * pointer may be %NULL if userspace provided no data at all 3028 * @dumpit: dump callback, for transferring bigger/multiple items. The 3029 * @storage points to cb->args[5], ie. is preserved over the multiple 3030 * dumpit calls. 3031 * It's recommended to not have the same sub command with both @doit and 3032 * @dumpit, so that userspace can assume certain ones are get and others 3033 * are used with dump requests. 3034 */ 3035 struct wiphy_vendor_command { 3036 struct nl80211_vendor_cmd_info info; 3037 u32 flags; 3038 int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3039 const void *data, int data_len); 3040 int (*dumpit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3041 struct sk_buff *skb, const void *data, int data_len, 3042 unsigned long *storage); 3043 }; 3044 3045 /** 3046 * struct wiphy - wireless hardware description 3047 * @reg_notifier: the driver's regulatory notification callback, 3048 * note that if your driver uses wiphy_apply_custom_regulatory() 3049 * the reg_notifier's request can be passed as NULL 3050 * @regd: the driver's regulatory domain, if one was requested via 3051 * the regulatory_hint() API. This can be used by the driver 3052 * on the reg_notifier() if it chooses to ignore future 3053 * regulatory domain changes caused by other drivers. 3054 * @signal_type: signal type reported in &struct cfg80211_bss. 3055 * @cipher_suites: supported cipher suites 3056 * @n_cipher_suites: number of supported cipher suites 3057 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 3058 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 3059 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 3060 * -1 = fragmentation disabled, only odd values >= 256 used 3061 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 3062 * @_net: the network namespace this wiphy currently lives in 3063 * @perm_addr: permanent MAC address of this device 3064 * @addr_mask: If the device supports multiple MAC addresses by masking, 3065 * set this to a mask with variable bits set to 1, e.g. if the last 3066 * four bits are variable then set it to 00-00-00-00-00-0f. The actual 3067 * variable bits shall be determined by the interfaces added, with 3068 * interfaces not matching the mask being rejected to be brought up. 3069 * @n_addresses: number of addresses in @addresses. 3070 * @addresses: If the device has more than one address, set this pointer 3071 * to a list of addresses (6 bytes each). The first one will be used 3072 * by default for perm_addr. In this case, the mask should be set to 3073 * all-zeroes. In this case it is assumed that the device can handle 3074 * the same number of arbitrary MAC addresses. 3075 * @registered: protects ->resume and ->suspend sysfs callbacks against 3076 * unregister hardware 3077 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 3078 * automatically on wiphy renames 3079 * @dev: (virtual) struct device for this wiphy 3080 * @registered: helps synchronize suspend/resume with wiphy unregister 3081 * @wext: wireless extension handlers 3082 * @priv: driver private data (sized according to wiphy_new() parameter) 3083 * @interface_modes: bitmask of interfaces types valid for this wiphy, 3084 * must be set by driver 3085 * @iface_combinations: Valid interface combinations array, should not 3086 * list single interface types. 3087 * @n_iface_combinations: number of entries in @iface_combinations array. 3088 * @software_iftypes: bitmask of software interface types, these are not 3089 * subject to any restrictions since they are purely managed in SW. 3090 * @flags: wiphy flags, see &enum wiphy_flags 3091 * @regulatory_flags: wiphy regulatory flags, see 3092 * &enum ieee80211_regulatory_flags 3093 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 3094 * @ext_features: extended features advertised to nl80211, see 3095 * &enum nl80211_ext_feature_index. 3096 * @bss_priv_size: each BSS struct has private data allocated with it, 3097 * this variable determines its size 3098 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 3099 * any given scan 3100 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 3101 * for in any given scheduled scan 3102 * @max_match_sets: maximum number of match sets the device can handle 3103 * when performing a scheduled scan, 0 if filtering is not 3104 * supported. 3105 * @max_scan_ie_len: maximum length of user-controlled IEs device can 3106 * add to probe request frames transmitted during a scan, must not 3107 * include fixed IEs like supported rates 3108 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 3109 * scans 3110 * @max_sched_scan_plans: maximum number of scan plans (scan interval and number 3111 * of iterations) for scheduled scan supported by the device. 3112 * @max_sched_scan_plan_interval: maximum interval (in seconds) for a 3113 * single scan plan supported by the device. 3114 * @max_sched_scan_plan_iterations: maximum number of iterations for a single 3115 * scan plan supported by the device. 3116 * @coverage_class: current coverage class 3117 * @fw_version: firmware version for ethtool reporting 3118 * @hw_version: hardware version for ethtool reporting 3119 * @max_num_pmkids: maximum number of PMKIDs supported by device 3120 * @privid: a pointer that drivers can use to identify if an arbitrary 3121 * wiphy is theirs, e.g. in global notifiers 3122 * @bands: information about bands/channels supported by this device 3123 * 3124 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 3125 * transmitted through nl80211, points to an array indexed by interface 3126 * type 3127 * 3128 * @available_antennas_tx: bitmap of antennas which are available to be 3129 * configured as TX antennas. Antenna configuration commands will be 3130 * rejected unless this or @available_antennas_rx is set. 3131 * 3132 * @available_antennas_rx: bitmap of antennas which are available to be 3133 * configured as RX antennas. Antenna configuration commands will be 3134 * rejected unless this or @available_antennas_tx is set. 3135 * 3136 * @probe_resp_offload: 3137 * Bitmap of supported protocols for probe response offloading. 3138 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 3139 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3140 * 3141 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 3142 * may request, if implemented. 3143 * 3144 * @wowlan: WoWLAN support information 3145 * @wowlan_config: current WoWLAN configuration; this should usually not be 3146 * used since access to it is necessarily racy, use the parameter passed 3147 * to the suspend() operation instead. 3148 * 3149 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 3150 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 3151 * If null, then none can be over-ridden. 3152 * @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden. 3153 * If null, then none can be over-ridden. 3154 * 3155 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device 3156 * supports for ACL. 3157 * 3158 * @extended_capabilities: extended capabilities supported by the driver, 3159 * additional capabilities might be supported by userspace; these are 3160 * the 802.11 extended capabilities ("Extended Capabilities element") 3161 * and are in the same format as in the information element. See 3162 * 802.11-2012 8.4.2.29 for the defined fields. 3163 * @extended_capabilities_mask: mask of the valid values 3164 * @extended_capabilities_len: length of the extended capabilities 3165 * @coalesce: packet coalescing support information 3166 * 3167 * @vendor_commands: array of vendor commands supported by the hardware 3168 * @n_vendor_commands: number of vendor commands 3169 * @vendor_events: array of vendor events supported by the hardware 3170 * @n_vendor_events: number of vendor events 3171 * 3172 * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode 3173 * (including P2P GO) or 0 to indicate no such limit is advertised. The 3174 * driver is allowed to advertise a theoretical limit that it can reach in 3175 * some cases, but may not always reach. 3176 * 3177 * @max_num_csa_counters: Number of supported csa_counters in beacons 3178 * and probe responses. This value should be set if the driver 3179 * wishes to limit the number of csa counters. Default (0) means 3180 * infinite. 3181 * @max_adj_channel_rssi_comp: max offset of between the channel on which the 3182 * frame was sent and the channel on which the frame was heard for which 3183 * the reported rssi is still valid. If a driver is able to compensate the 3184 * low rssi when a frame is heard on different channel, then it should set 3185 * this variable to the maximal offset for which it can compensate. 3186 * This value should be set in MHz. 3187 */ 3188 struct wiphy { 3189 /* assign these fields before you register the wiphy */ 3190 3191 /* permanent MAC address(es) */ 3192 u8 perm_addr[ETH_ALEN]; 3193 u8 addr_mask[ETH_ALEN]; 3194 3195 struct mac_address *addresses; 3196 3197 const struct ieee80211_txrx_stypes *mgmt_stypes; 3198 3199 const struct ieee80211_iface_combination *iface_combinations; 3200 int n_iface_combinations; 3201 u16 software_iftypes; 3202 3203 u16 n_addresses; 3204 3205 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 3206 u16 interface_modes; 3207 3208 u16 max_acl_mac_addrs; 3209 3210 u32 flags, regulatory_flags, features; 3211 u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)]; 3212 3213 u32 ap_sme_capa; 3214 3215 enum cfg80211_signal_type signal_type; 3216 3217 int bss_priv_size; 3218 u8 max_scan_ssids; 3219 u8 max_sched_scan_ssids; 3220 u8 max_match_sets; 3221 u16 max_scan_ie_len; 3222 u16 max_sched_scan_ie_len; 3223 u32 max_sched_scan_plans; 3224 u32 max_sched_scan_plan_interval; 3225 u32 max_sched_scan_plan_iterations; 3226 3227 int n_cipher_suites; 3228 const u32 *cipher_suites; 3229 3230 u8 retry_short; 3231 u8 retry_long; 3232 u32 frag_threshold; 3233 u32 rts_threshold; 3234 u8 coverage_class; 3235 3236 char fw_version[ETHTOOL_FWVERS_LEN]; 3237 u32 hw_version; 3238 3239 #ifdef CONFIG_PM 3240 const struct wiphy_wowlan_support *wowlan; 3241 struct cfg80211_wowlan *wowlan_config; 3242 #endif 3243 3244 u16 max_remain_on_channel_duration; 3245 3246 u8 max_num_pmkids; 3247 3248 u32 available_antennas_tx; 3249 u32 available_antennas_rx; 3250 3251 /* 3252 * Bitmap of supported protocols for probe response offloading 3253 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 3254 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3255 */ 3256 u32 probe_resp_offload; 3257 3258 const u8 *extended_capabilities, *extended_capabilities_mask; 3259 u8 extended_capabilities_len; 3260 3261 /* If multiple wiphys are registered and you're handed e.g. 3262 * a regular netdev with assigned ieee80211_ptr, you won't 3263 * know whether it points to a wiphy your driver has registered 3264 * or not. Assign this to something global to your driver to 3265 * help determine whether you own this wiphy or not. */ 3266 const void *privid; 3267 3268 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 3269 3270 /* Lets us get back the wiphy on the callback */ 3271 void (*reg_notifier)(struct wiphy *wiphy, 3272 struct regulatory_request *request); 3273 3274 /* fields below are read-only, assigned by cfg80211 */ 3275 3276 const struct ieee80211_regdomain __rcu *regd; 3277 3278 /* the item in /sys/class/ieee80211/ points to this, 3279 * you need use set_wiphy_dev() (see below) */ 3280 struct device dev; 3281 3282 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 3283 bool registered; 3284 3285 /* dir in debugfs: ieee80211/<wiphyname> */ 3286 struct dentry *debugfsdir; 3287 3288 const struct ieee80211_ht_cap *ht_capa_mod_mask; 3289 const struct ieee80211_vht_cap *vht_capa_mod_mask; 3290 3291 /* the network namespace this phy lives in currently */ 3292 possible_net_t _net; 3293 3294 #ifdef CONFIG_CFG80211_WEXT 3295 const struct iw_handler_def *wext; 3296 #endif 3297 3298 const struct wiphy_coalesce_support *coalesce; 3299 3300 const struct wiphy_vendor_command *vendor_commands; 3301 const struct nl80211_vendor_cmd_info *vendor_events; 3302 int n_vendor_commands, n_vendor_events; 3303 3304 u16 max_ap_assoc_sta; 3305 3306 u8 max_num_csa_counters; 3307 u8 max_adj_channel_rssi_comp; 3308 3309 char priv[0] __aligned(NETDEV_ALIGN); 3310 }; 3311 3312 static inline struct net *wiphy_net(struct wiphy *wiphy) 3313 { 3314 return read_pnet(&wiphy->_net); 3315 } 3316 3317 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 3318 { 3319 write_pnet(&wiphy->_net, net); 3320 } 3321 3322 /** 3323 * wiphy_priv - return priv from wiphy 3324 * 3325 * @wiphy: the wiphy whose priv pointer to return 3326 * Return: The priv of @wiphy. 3327 */ 3328 static inline void *wiphy_priv(struct wiphy *wiphy) 3329 { 3330 BUG_ON(!wiphy); 3331 return &wiphy->priv; 3332 } 3333 3334 /** 3335 * priv_to_wiphy - return the wiphy containing the priv 3336 * 3337 * @priv: a pointer previously returned by wiphy_priv 3338 * Return: The wiphy of @priv. 3339 */ 3340 static inline struct wiphy *priv_to_wiphy(void *priv) 3341 { 3342 BUG_ON(!priv); 3343 return container_of(priv, struct wiphy, priv); 3344 } 3345 3346 /** 3347 * set_wiphy_dev - set device pointer for wiphy 3348 * 3349 * @wiphy: The wiphy whose device to bind 3350 * @dev: The device to parent it to 3351 */ 3352 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 3353 { 3354 wiphy->dev.parent = dev; 3355 } 3356 3357 /** 3358 * wiphy_dev - get wiphy dev pointer 3359 * 3360 * @wiphy: The wiphy whose device struct to look up 3361 * Return: The dev of @wiphy. 3362 */ 3363 static inline struct device *wiphy_dev(struct wiphy *wiphy) 3364 { 3365 return wiphy->dev.parent; 3366 } 3367 3368 /** 3369 * wiphy_name - get wiphy name 3370 * 3371 * @wiphy: The wiphy whose name to return 3372 * Return: The name of @wiphy. 3373 */ 3374 static inline const char *wiphy_name(const struct wiphy *wiphy) 3375 { 3376 return dev_name(&wiphy->dev); 3377 } 3378 3379 /** 3380 * wiphy_new_nm - create a new wiphy for use with cfg80211 3381 * 3382 * @ops: The configuration operations for this device 3383 * @sizeof_priv: The size of the private area to allocate 3384 * @requested_name: Request a particular name. 3385 * NULL is valid value, and means use the default phy%d naming. 3386 * 3387 * Create a new wiphy and associate the given operations with it. 3388 * @sizeof_priv bytes are allocated for private use. 3389 * 3390 * Return: A pointer to the new wiphy. This pointer must be 3391 * assigned to each netdev's ieee80211_ptr for proper operation. 3392 */ 3393 struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, 3394 const char *requested_name); 3395 3396 /** 3397 * wiphy_new - create a new wiphy for use with cfg80211 3398 * 3399 * @ops: The configuration operations for this device 3400 * @sizeof_priv: The size of the private area to allocate 3401 * 3402 * Create a new wiphy and associate the given operations with it. 3403 * @sizeof_priv bytes are allocated for private use. 3404 * 3405 * Return: A pointer to the new wiphy. This pointer must be 3406 * assigned to each netdev's ieee80211_ptr for proper operation. 3407 */ 3408 static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops, 3409 int sizeof_priv) 3410 { 3411 return wiphy_new_nm(ops, sizeof_priv, NULL); 3412 } 3413 3414 /** 3415 * wiphy_register - register a wiphy with cfg80211 3416 * 3417 * @wiphy: The wiphy to register. 3418 * 3419 * Return: A non-negative wiphy index or a negative error code. 3420 */ 3421 int wiphy_register(struct wiphy *wiphy); 3422 3423 /** 3424 * wiphy_unregister - deregister a wiphy from cfg80211 3425 * 3426 * @wiphy: The wiphy to unregister. 3427 * 3428 * After this call, no more requests can be made with this priv 3429 * pointer, but the call may sleep to wait for an outstanding 3430 * request that is being handled. 3431 */ 3432 void wiphy_unregister(struct wiphy *wiphy); 3433 3434 /** 3435 * wiphy_free - free wiphy 3436 * 3437 * @wiphy: The wiphy to free 3438 */ 3439 void wiphy_free(struct wiphy *wiphy); 3440 3441 /* internal structs */ 3442 struct cfg80211_conn; 3443 struct cfg80211_internal_bss; 3444 struct cfg80211_cached_keys; 3445 3446 /** 3447 * struct wireless_dev - wireless device state 3448 * 3449 * For netdevs, this structure must be allocated by the driver 3450 * that uses the ieee80211_ptr field in struct net_device (this 3451 * is intentional so it can be allocated along with the netdev.) 3452 * It need not be registered then as netdev registration will 3453 * be intercepted by cfg80211 to see the new wireless device. 3454 * 3455 * For non-netdev uses, it must also be allocated by the driver 3456 * in response to the cfg80211 callbacks that require it, as 3457 * there's no netdev registration in that case it may not be 3458 * allocated outside of callback operations that return it. 3459 * 3460 * @wiphy: pointer to hardware description 3461 * @iftype: interface type 3462 * @list: (private) Used to collect the interfaces 3463 * @netdev: (private) Used to reference back to the netdev, may be %NULL 3464 * @identifier: (private) Identifier used in nl80211 to identify this 3465 * wireless device if it has no netdev 3466 * @current_bss: (private) Used by the internal configuration code 3467 * @chandef: (private) Used by the internal configuration code to track 3468 * the user-set channel definition. 3469 * @preset_chandef: (private) Used by the internal configuration code to 3470 * track the channel to be used for AP later 3471 * @bssid: (private) Used by the internal configuration code 3472 * @ssid: (private) Used by the internal configuration code 3473 * @ssid_len: (private) Used by the internal configuration code 3474 * @mesh_id_len: (private) Used by the internal configuration code 3475 * @mesh_id_up_len: (private) Used by the internal configuration code 3476 * @wext: (private) Used by the internal wireless extensions compat code 3477 * @use_4addr: indicates 4addr mode is used on this interface, must be 3478 * set by driver (if supported) on add_interface BEFORE registering the 3479 * netdev and may otherwise be used by driver read-only, will be update 3480 * by cfg80211 on change_interface 3481 * @mgmt_registrations: list of registrations for management frames 3482 * @mgmt_registrations_lock: lock for the list 3483 * @mtx: mutex used to lock data in this struct, may be used by drivers 3484 * and some API functions require it held 3485 * @beacon_interval: beacon interval used on this device for transmitting 3486 * beacons, 0 when not valid 3487 * @address: The address for this device, valid only if @netdev is %NULL 3488 * @p2p_started: true if this is a P2P Device that has been started 3489 * @cac_started: true if DFS channel availability check has been started 3490 * @cac_start_time: timestamp (jiffies) when the dfs state was entered. 3491 * @cac_time_ms: CAC time in ms 3492 * @ps: powersave mode is enabled 3493 * @ps_timeout: dynamic powersave timeout 3494 * @ap_unexpected_nlportid: (private) netlink port ID of application 3495 * registered for unexpected class 3 frames (AP mode) 3496 * @conn: (private) cfg80211 software SME connection state machine data 3497 * @connect_keys: (private) keys to set after connection is established 3498 * @conn_bss_type: connecting/connected BSS type 3499 * @ibss_fixed: (private) IBSS is using fixed BSSID 3500 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel 3501 * @event_list: (private) list for internal event processing 3502 * @event_lock: (private) lock for event list 3503 * @owner_nlportid: (private) owner socket port ID 3504 */ 3505 struct wireless_dev { 3506 struct wiphy *wiphy; 3507 enum nl80211_iftype iftype; 3508 3509 /* the remainder of this struct should be private to cfg80211 */ 3510 struct list_head list; 3511 struct net_device *netdev; 3512 3513 u32 identifier; 3514 3515 struct list_head mgmt_registrations; 3516 spinlock_t mgmt_registrations_lock; 3517 3518 struct mutex mtx; 3519 3520 bool use_4addr, p2p_started; 3521 3522 u8 address[ETH_ALEN] __aligned(sizeof(u16)); 3523 3524 /* currently used for IBSS and SME - might be rearranged later */ 3525 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3526 u8 ssid_len, mesh_id_len, mesh_id_up_len; 3527 struct cfg80211_conn *conn; 3528 struct cfg80211_cached_keys *connect_keys; 3529 enum ieee80211_bss_type conn_bss_type; 3530 3531 struct list_head event_list; 3532 spinlock_t event_lock; 3533 3534 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 3535 struct cfg80211_chan_def preset_chandef; 3536 struct cfg80211_chan_def chandef; 3537 3538 bool ibss_fixed; 3539 bool ibss_dfs_possible; 3540 3541 bool ps; 3542 int ps_timeout; 3543 3544 int beacon_interval; 3545 3546 u32 ap_unexpected_nlportid; 3547 3548 bool cac_started; 3549 unsigned long cac_start_time; 3550 unsigned int cac_time_ms; 3551 3552 u32 owner_nlportid; 3553 3554 #ifdef CONFIG_CFG80211_WEXT 3555 /* wext data */ 3556 struct { 3557 struct cfg80211_ibss_params ibss; 3558 struct cfg80211_connect_params connect; 3559 struct cfg80211_cached_keys *keys; 3560 const u8 *ie; 3561 size_t ie_len; 3562 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 3563 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3564 s8 default_key, default_mgmt_key; 3565 bool prev_bssid_valid; 3566 } wext; 3567 #endif 3568 }; 3569 3570 static inline u8 *wdev_address(struct wireless_dev *wdev) 3571 { 3572 if (wdev->netdev) 3573 return wdev->netdev->dev_addr; 3574 return wdev->address; 3575 } 3576 3577 /** 3578 * wdev_priv - return wiphy priv from wireless_dev 3579 * 3580 * @wdev: The wireless device whose wiphy's priv pointer to return 3581 * Return: The wiphy priv of @wdev. 3582 */ 3583 static inline void *wdev_priv(struct wireless_dev *wdev) 3584 { 3585 BUG_ON(!wdev); 3586 return wiphy_priv(wdev->wiphy); 3587 } 3588 3589 /** 3590 * DOC: Utility functions 3591 * 3592 * cfg80211 offers a number of utility functions that can be useful. 3593 */ 3594 3595 /** 3596 * ieee80211_channel_to_frequency - convert channel number to frequency 3597 * @chan: channel number 3598 * @band: band, necessary due to channel number overlap 3599 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed. 3600 */ 3601 int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 3602 3603 /** 3604 * ieee80211_frequency_to_channel - convert frequency to channel number 3605 * @freq: center frequency 3606 * Return: The corresponding channel, or 0 if the conversion failed. 3607 */ 3608 int ieee80211_frequency_to_channel(int freq); 3609 3610 /* 3611 * Name indirection necessary because the ieee80211 code also has 3612 * a function named "ieee80211_get_channel", so if you include 3613 * cfg80211's header file you get cfg80211's version, if you try 3614 * to include both header files you'll (rightfully!) get a symbol 3615 * clash. 3616 */ 3617 struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 3618 int freq); 3619 /** 3620 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 3621 * @wiphy: the struct wiphy to get the channel for 3622 * @freq: the center frequency of the channel 3623 * Return: The channel struct from @wiphy at @freq. 3624 */ 3625 static inline struct ieee80211_channel * 3626 ieee80211_get_channel(struct wiphy *wiphy, int freq) 3627 { 3628 return __ieee80211_get_channel(wiphy, freq); 3629 } 3630 3631 /** 3632 * ieee80211_get_response_rate - get basic rate for a given rate 3633 * 3634 * @sband: the band to look for rates in 3635 * @basic_rates: bitmap of basic rates 3636 * @bitrate: the bitrate for which to find the basic rate 3637 * 3638 * Return: The basic rate corresponding to a given bitrate, that 3639 * is the next lower bitrate contained in the basic rate map, 3640 * which is, for this function, given as a bitmap of indices of 3641 * rates in the band's bitrate table. 3642 */ 3643 struct ieee80211_rate * 3644 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 3645 u32 basic_rates, int bitrate); 3646 3647 /** 3648 * ieee80211_mandatory_rates - get mandatory rates for a given band 3649 * @sband: the band to look for rates in 3650 * @scan_width: width of the control channel 3651 * 3652 * This function returns a bitmap of the mandatory rates for the given 3653 * band, bits are set according to the rate position in the bitrates array. 3654 */ 3655 u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, 3656 enum nl80211_bss_scan_width scan_width); 3657 3658 /* 3659 * Radiotap parsing functions -- for controlled injection support 3660 * 3661 * Implemented in net/wireless/radiotap.c 3662 * Documentation in Documentation/networking/radiotap-headers.txt 3663 */ 3664 3665 struct radiotap_align_size { 3666 uint8_t align:4, size:4; 3667 }; 3668 3669 struct ieee80211_radiotap_namespace { 3670 const struct radiotap_align_size *align_size; 3671 int n_bits; 3672 uint32_t oui; 3673 uint8_t subns; 3674 }; 3675 3676 struct ieee80211_radiotap_vendor_namespaces { 3677 const struct ieee80211_radiotap_namespace *ns; 3678 int n_ns; 3679 }; 3680 3681 /** 3682 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 3683 * @this_arg_index: index of current arg, valid after each successful call 3684 * to ieee80211_radiotap_iterator_next() 3685 * @this_arg: pointer to current radiotap arg; it is valid after each 3686 * call to ieee80211_radiotap_iterator_next() but also after 3687 * ieee80211_radiotap_iterator_init() where it will point to 3688 * the beginning of the actual data portion 3689 * @this_arg_size: length of the current arg, for convenience 3690 * @current_namespace: pointer to the current namespace definition 3691 * (or internally %NULL if the current namespace is unknown) 3692 * @is_radiotap_ns: indicates whether the current namespace is the default 3693 * radiotap namespace or not 3694 * 3695 * @_rtheader: pointer to the radiotap header we are walking through 3696 * @_max_length: length of radiotap header in cpu byte ordering 3697 * @_arg_index: next argument index 3698 * @_arg: next argument pointer 3699 * @_next_bitmap: internal pointer to next present u32 3700 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 3701 * @_vns: vendor namespace definitions 3702 * @_next_ns_data: beginning of the next namespace's data 3703 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 3704 * next bitmap word 3705 * 3706 * Describes the radiotap parser state. Fields prefixed with an underscore 3707 * must not be used by users of the parser, only by the parser internally. 3708 */ 3709 3710 struct ieee80211_radiotap_iterator { 3711 struct ieee80211_radiotap_header *_rtheader; 3712 const struct ieee80211_radiotap_vendor_namespaces *_vns; 3713 const struct ieee80211_radiotap_namespace *current_namespace; 3714 3715 unsigned char *_arg, *_next_ns_data; 3716 __le32 *_next_bitmap; 3717 3718 unsigned char *this_arg; 3719 int this_arg_index; 3720 int this_arg_size; 3721 3722 int is_radiotap_ns; 3723 3724 int _max_length; 3725 int _arg_index; 3726 uint32_t _bitmap_shifter; 3727 int _reset_on_ext; 3728 }; 3729 3730 int 3731 ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator, 3732 struct ieee80211_radiotap_header *radiotap_header, 3733 int max_length, 3734 const struct ieee80211_radiotap_vendor_namespaces *vns); 3735 3736 int 3737 ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator); 3738 3739 3740 extern const unsigned char rfc1042_header[6]; 3741 extern const unsigned char bridge_tunnel_header[6]; 3742 3743 /** 3744 * ieee80211_get_hdrlen_from_skb - get header length from data 3745 * 3746 * @skb: the frame 3747 * 3748 * Given an skb with a raw 802.11 header at the data pointer this function 3749 * returns the 802.11 header length. 3750 * 3751 * Return: The 802.11 header length in bytes (not including encryption 3752 * headers). Or 0 if the data in the sk_buff is too short to contain a valid 3753 * 802.11 header. 3754 */ 3755 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 3756 3757 /** 3758 * ieee80211_hdrlen - get header length in bytes from frame control 3759 * @fc: frame control field in little-endian format 3760 * Return: The header length in bytes. 3761 */ 3762 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 3763 3764 /** 3765 * ieee80211_get_mesh_hdrlen - get mesh extension header length 3766 * @meshhdr: the mesh extension header, only the flags field 3767 * (first byte) will be accessed 3768 * Return: The length of the extension header, which is always at 3769 * least 6 bytes and at most 18 if address 5 and 6 are present. 3770 */ 3771 unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); 3772 3773 /** 3774 * DOC: Data path helpers 3775 * 3776 * In addition to generic utilities, cfg80211 also offers 3777 * functions that help implement the data path for devices 3778 * that do not do the 802.11/802.3 conversion on the device. 3779 */ 3780 3781 /** 3782 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 3783 * @skb: the 802.11 data frame 3784 * @addr: the device MAC address 3785 * @iftype: the virtual interface type 3786 * Return: 0 on success. Non-zero on error. 3787 */ 3788 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 3789 enum nl80211_iftype iftype); 3790 3791 /** 3792 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 3793 * @skb: the 802.3 frame 3794 * @addr: the device MAC address 3795 * @iftype: the virtual interface type 3796 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 3797 * @qos: build 802.11 QoS data frame 3798 * Return: 0 on success, or a negative error code. 3799 */ 3800 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 3801 enum nl80211_iftype iftype, const u8 *bssid, 3802 bool qos); 3803 3804 /** 3805 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 3806 * 3807 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 3808 * 802.3 frames. The @list will be empty if the decode fails. The 3809 * @skb is consumed after the function returns. 3810 * 3811 * @skb: The input IEEE 802.11n A-MSDU frame. 3812 * @list: The output list of 802.3 frames. It must be allocated and 3813 * initialized by by the caller. 3814 * @addr: The device MAC address. 3815 * @iftype: The device interface type. 3816 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 3817 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 3818 */ 3819 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 3820 const u8 *addr, enum nl80211_iftype iftype, 3821 const unsigned int extra_headroom, 3822 bool has_80211_header); 3823 3824 /** 3825 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 3826 * @skb: the data frame 3827 * @qos_map: Interworking QoS mapping or %NULL if not in use 3828 * Return: The 802.1p/1d tag. 3829 */ 3830 unsigned int cfg80211_classify8021d(struct sk_buff *skb, 3831 struct cfg80211_qos_map *qos_map); 3832 3833 /** 3834 * cfg80211_find_ie - find information element in data 3835 * 3836 * @eid: element ID 3837 * @ies: data consisting of IEs 3838 * @len: length of data 3839 * 3840 * Return: %NULL if the element ID could not be found or if 3841 * the element is invalid (claims to be longer than the given 3842 * data), or a pointer to the first byte of the requested 3843 * element, that is the byte containing the element ID. 3844 * 3845 * Note: There are no checks on the element length other than 3846 * having to fit into the given data. 3847 */ 3848 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 3849 3850 /** 3851 * cfg80211_find_vendor_ie - find vendor specific information element in data 3852 * 3853 * @oui: vendor OUI 3854 * @oui_type: vendor-specific OUI type 3855 * @ies: data consisting of IEs 3856 * @len: length of data 3857 * 3858 * Return: %NULL if the vendor specific element ID could not be found or if the 3859 * element is invalid (claims to be longer than the given data), or a pointer to 3860 * the first byte of the requested element, that is the byte containing the 3861 * element ID. 3862 * 3863 * Note: There are no checks on the element length other than having to fit into 3864 * the given data. 3865 */ 3866 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 3867 const u8 *ies, int len); 3868 3869 /** 3870 * DOC: Regulatory enforcement infrastructure 3871 * 3872 * TODO 3873 */ 3874 3875 /** 3876 * regulatory_hint - driver hint to the wireless core a regulatory domain 3877 * @wiphy: the wireless device giving the hint (used only for reporting 3878 * conflicts) 3879 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 3880 * should be in. If @rd is set this should be NULL. Note that if you 3881 * set this to NULL you should still set rd->alpha2 to some accepted 3882 * alpha2. 3883 * 3884 * Wireless drivers can use this function to hint to the wireless core 3885 * what it believes should be the current regulatory domain by 3886 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 3887 * domain should be in or by providing a completely build regulatory domain. 3888 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 3889 * for a regulatory domain structure for the respective country. 3890 * 3891 * The wiphy must have been registered to cfg80211 prior to this call. 3892 * For cfg80211 drivers this means you must first use wiphy_register(), 3893 * for mac80211 drivers you must first use ieee80211_register_hw(). 3894 * 3895 * Drivers should check the return value, its possible you can get 3896 * an -ENOMEM. 3897 * 3898 * Return: 0 on success. -ENOMEM. 3899 */ 3900 int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 3901 3902 /** 3903 * regulatory_set_wiphy_regd - set regdom info for self managed drivers 3904 * @wiphy: the wireless device we want to process the regulatory domain on 3905 * @rd: the regulatory domain informatoin to use for this wiphy 3906 * 3907 * Set the regulatory domain information for self-managed wiphys, only they 3908 * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more 3909 * information. 3910 * 3911 * Return: 0 on success. -EINVAL, -EPERM 3912 */ 3913 int regulatory_set_wiphy_regd(struct wiphy *wiphy, 3914 struct ieee80211_regdomain *rd); 3915 3916 /** 3917 * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers 3918 * @wiphy: the wireless device we want to process the regulatory domain on 3919 * @rd: the regulatory domain information to use for this wiphy 3920 * 3921 * This functions requires the RTNL to be held and applies the new regdomain 3922 * synchronously to this wiphy. For more details see 3923 * regulatory_set_wiphy_regd(). 3924 * 3925 * Return: 0 on success. -EINVAL, -EPERM 3926 */ 3927 int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, 3928 struct ieee80211_regdomain *rd); 3929 3930 /** 3931 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 3932 * @wiphy: the wireless device we want to process the regulatory domain on 3933 * @regd: the custom regulatory domain to use for this wiphy 3934 * 3935 * Drivers can sometimes have custom regulatory domains which do not apply 3936 * to a specific country. Drivers can use this to apply such custom regulatory 3937 * domains. This routine must be called prior to wiphy registration. The 3938 * custom regulatory domain will be trusted completely and as such previous 3939 * default channel settings will be disregarded. If no rule is found for a 3940 * channel on the regulatory domain the channel will be disabled. 3941 * Drivers using this for a wiphy should also set the wiphy flag 3942 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy 3943 * that called this helper. 3944 */ 3945 void wiphy_apply_custom_regulatory(struct wiphy *wiphy, 3946 const struct ieee80211_regdomain *regd); 3947 3948 /** 3949 * freq_reg_info - get regulatory information for the given frequency 3950 * @wiphy: the wiphy for which we want to process this rule for 3951 * @center_freq: Frequency in KHz for which we want regulatory information for 3952 * 3953 * Use this function to get the regulatory rule for a specific frequency on 3954 * a given wireless device. If the device has a specific regulatory domain 3955 * it wants to follow we respect that unless a country IE has been received 3956 * and processed already. 3957 * 3958 * Return: A valid pointer, or, when an error occurs, for example if no rule 3959 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to 3960 * check and PTR_ERR() to obtain the numeric return value. The numeric return 3961 * value will be -ERANGE if we determine the given center_freq does not even 3962 * have a regulatory rule for a frequency range in the center_freq's band. 3963 * See freq_in_rule_band() for our current definition of a band -- this is 3964 * purely subjective and right now it's 802.11 specific. 3965 */ 3966 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, 3967 u32 center_freq); 3968 3969 /** 3970 * reg_initiator_name - map regulatory request initiator enum to name 3971 * @initiator: the regulatory request initiator 3972 * 3973 * You can use this to map the regulatory request initiator enum to a 3974 * proper string representation. 3975 */ 3976 const char *reg_initiator_name(enum nl80211_reg_initiator initiator); 3977 3978 /* 3979 * callbacks for asynchronous cfg80211 methods, notification 3980 * functions and BSS handling helpers 3981 */ 3982 3983 /** 3984 * cfg80211_scan_done - notify that scan finished 3985 * 3986 * @request: the corresponding scan request 3987 * @aborted: set to true if the scan was aborted for any reason, 3988 * userspace will be notified of that 3989 */ 3990 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 3991 3992 /** 3993 * cfg80211_sched_scan_results - notify that new scan results are available 3994 * 3995 * @wiphy: the wiphy which got scheduled scan results 3996 */ 3997 void cfg80211_sched_scan_results(struct wiphy *wiphy); 3998 3999 /** 4000 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 4001 * 4002 * @wiphy: the wiphy on which the scheduled scan stopped 4003 * 4004 * The driver can call this function to inform cfg80211 that the 4005 * scheduled scan had to be stopped, for whatever reason. The driver 4006 * is then called back via the sched_scan_stop operation when done. 4007 */ 4008 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 4009 4010 /** 4011 * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped 4012 * 4013 * @wiphy: the wiphy on which the scheduled scan stopped 4014 * 4015 * The driver can call this function to inform cfg80211 that the 4016 * scheduled scan had to be stopped, for whatever reason. The driver 4017 * is then called back via the sched_scan_stop operation when done. 4018 * This function should be called with rtnl locked. 4019 */ 4020 void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy); 4021 4022 /** 4023 * cfg80211_inform_bss_frame_data - inform cfg80211 of a received BSS frame 4024 * @wiphy: the wiphy reporting the BSS 4025 * @data: the BSS metadata 4026 * @mgmt: the management frame (probe response or beacon) 4027 * @len: length of the management frame 4028 * @gfp: context flags 4029 * 4030 * This informs cfg80211 that BSS information was found and 4031 * the BSS should be updated/added. 4032 * 4033 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4034 * Or %NULL on error. 4035 */ 4036 struct cfg80211_bss * __must_check 4037 cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 4038 struct cfg80211_inform_bss *data, 4039 struct ieee80211_mgmt *mgmt, size_t len, 4040 gfp_t gfp); 4041 4042 static inline struct cfg80211_bss * __must_check 4043 cfg80211_inform_bss_width_frame(struct wiphy *wiphy, 4044 struct ieee80211_channel *rx_channel, 4045 enum nl80211_bss_scan_width scan_width, 4046 struct ieee80211_mgmt *mgmt, size_t len, 4047 s32 signal, gfp_t gfp) 4048 { 4049 struct cfg80211_inform_bss data = { 4050 .chan = rx_channel, 4051 .scan_width = scan_width, 4052 .signal = signal, 4053 }; 4054 4055 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4056 } 4057 4058 static inline struct cfg80211_bss * __must_check 4059 cfg80211_inform_bss_frame(struct wiphy *wiphy, 4060 struct ieee80211_channel *rx_channel, 4061 struct ieee80211_mgmt *mgmt, size_t len, 4062 s32 signal, gfp_t gfp) 4063 { 4064 struct cfg80211_inform_bss data = { 4065 .chan = rx_channel, 4066 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4067 .signal = signal, 4068 }; 4069 4070 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4071 } 4072 4073 /** 4074 * enum cfg80211_bss_frame_type - frame type that the BSS data came from 4075 * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is 4076 * from a beacon or probe response 4077 * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon 4078 * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response 4079 */ 4080 enum cfg80211_bss_frame_type { 4081 CFG80211_BSS_FTYPE_UNKNOWN, 4082 CFG80211_BSS_FTYPE_BEACON, 4083 CFG80211_BSS_FTYPE_PRESP, 4084 }; 4085 4086 /** 4087 * cfg80211_inform_bss_data - inform cfg80211 of a new BSS 4088 * 4089 * @wiphy: the wiphy reporting the BSS 4090 * @data: the BSS metadata 4091 * @ftype: frame type (if known) 4092 * @bssid: the BSSID of the BSS 4093 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 4094 * @capability: the capability field sent by the peer 4095 * @beacon_interval: the beacon interval announced by the peer 4096 * @ie: additional IEs sent by the peer 4097 * @ielen: length of the additional IEs 4098 * @gfp: context flags 4099 * 4100 * This informs cfg80211 that BSS information was found and 4101 * the BSS should be updated/added. 4102 * 4103 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4104 * Or %NULL on error. 4105 */ 4106 struct cfg80211_bss * __must_check 4107 cfg80211_inform_bss_data(struct wiphy *wiphy, 4108 struct cfg80211_inform_bss *data, 4109 enum cfg80211_bss_frame_type ftype, 4110 const u8 *bssid, u64 tsf, u16 capability, 4111 u16 beacon_interval, const u8 *ie, size_t ielen, 4112 gfp_t gfp); 4113 4114 static inline struct cfg80211_bss * __must_check 4115 cfg80211_inform_bss_width(struct wiphy *wiphy, 4116 struct ieee80211_channel *rx_channel, 4117 enum nl80211_bss_scan_width scan_width, 4118 enum cfg80211_bss_frame_type ftype, 4119 const u8 *bssid, u64 tsf, u16 capability, 4120 u16 beacon_interval, const u8 *ie, size_t ielen, 4121 s32 signal, gfp_t gfp) 4122 { 4123 struct cfg80211_inform_bss data = { 4124 .chan = rx_channel, 4125 .scan_width = scan_width, 4126 .signal = signal, 4127 }; 4128 4129 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4130 capability, beacon_interval, ie, ielen, 4131 gfp); 4132 } 4133 4134 static inline struct cfg80211_bss * __must_check 4135 cfg80211_inform_bss(struct wiphy *wiphy, 4136 struct ieee80211_channel *rx_channel, 4137 enum cfg80211_bss_frame_type ftype, 4138 const u8 *bssid, u64 tsf, u16 capability, 4139 u16 beacon_interval, const u8 *ie, size_t ielen, 4140 s32 signal, gfp_t gfp) 4141 { 4142 struct cfg80211_inform_bss data = { 4143 .chan = rx_channel, 4144 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4145 .signal = signal, 4146 }; 4147 4148 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4149 capability, beacon_interval, ie, ielen, 4150 gfp); 4151 } 4152 4153 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 4154 struct ieee80211_channel *channel, 4155 const u8 *bssid, 4156 const u8 *ssid, size_t ssid_len, 4157 enum ieee80211_bss_type bss_type, 4158 enum ieee80211_privacy); 4159 static inline struct cfg80211_bss * 4160 cfg80211_get_ibss(struct wiphy *wiphy, 4161 struct ieee80211_channel *channel, 4162 const u8 *ssid, size_t ssid_len) 4163 { 4164 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 4165 IEEE80211_BSS_TYPE_IBSS, 4166 IEEE80211_PRIVACY_ANY); 4167 } 4168 4169 /** 4170 * cfg80211_ref_bss - reference BSS struct 4171 * @wiphy: the wiphy this BSS struct belongs to 4172 * @bss: the BSS struct to reference 4173 * 4174 * Increments the refcount of the given BSS struct. 4175 */ 4176 void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4177 4178 /** 4179 * cfg80211_put_bss - unref BSS struct 4180 * @wiphy: the wiphy this BSS struct belongs to 4181 * @bss: the BSS struct 4182 * 4183 * Decrements the refcount of the given BSS struct. 4184 */ 4185 void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4186 4187 /** 4188 * cfg80211_unlink_bss - unlink BSS from internal data structures 4189 * @wiphy: the wiphy 4190 * @bss: the bss to remove 4191 * 4192 * This function removes the given BSS from the internal data structures 4193 * thereby making it no longer show up in scan results etc. Use this 4194 * function when you detect a BSS is gone. Normally BSSes will also time 4195 * out, so it is not necessary to use this function at all. 4196 */ 4197 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4198 4199 static inline enum nl80211_bss_scan_width 4200 cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef) 4201 { 4202 switch (chandef->width) { 4203 case NL80211_CHAN_WIDTH_5: 4204 return NL80211_BSS_CHAN_WIDTH_5; 4205 case NL80211_CHAN_WIDTH_10: 4206 return NL80211_BSS_CHAN_WIDTH_10; 4207 default: 4208 return NL80211_BSS_CHAN_WIDTH_20; 4209 } 4210 } 4211 4212 /** 4213 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame 4214 * @dev: network device 4215 * @buf: authentication frame (header + body) 4216 * @len: length of the frame data 4217 * 4218 * This function is called whenever an authentication, disassociation or 4219 * deauthentication frame has been received and processed in station mode. 4220 * After being asked to authenticate via cfg80211_ops::auth() the driver must 4221 * call either this function or cfg80211_auth_timeout(). 4222 * After being asked to associate via cfg80211_ops::assoc() the driver must 4223 * call either this function or cfg80211_auth_timeout(). 4224 * While connected, the driver must calls this for received and processed 4225 * disassociation and deauthentication frames. If the frame couldn't be used 4226 * because it was unprotected, the driver must call the function 4227 * cfg80211_rx_unprot_mlme_mgmt() instead. 4228 * 4229 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4230 */ 4231 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4232 4233 /** 4234 * cfg80211_auth_timeout - notification of timed out authentication 4235 * @dev: network device 4236 * @addr: The MAC address of the device with which the authentication timed out 4237 * 4238 * This function may sleep. The caller must hold the corresponding wdev's 4239 * mutex. 4240 */ 4241 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); 4242 4243 /** 4244 * cfg80211_rx_assoc_resp - notification of processed association response 4245 * @dev: network device 4246 * @bss: the BSS that association was requested with, ownership of the pointer 4247 * moves to cfg80211 in this call 4248 * @buf: authentication frame (header + body) 4249 * @len: length of the frame data 4250 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a. 4251 * 4252 * After being asked to associate via cfg80211_ops::assoc() the driver must 4253 * call either this function or cfg80211_auth_timeout(). 4254 * 4255 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4256 */ 4257 void cfg80211_rx_assoc_resp(struct net_device *dev, 4258 struct cfg80211_bss *bss, 4259 const u8 *buf, size_t len, 4260 int uapsd_queues); 4261 4262 /** 4263 * cfg80211_assoc_timeout - notification of timed out association 4264 * @dev: network device 4265 * @bss: The BSS entry with which association timed out. 4266 * 4267 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4268 */ 4269 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss); 4270 4271 /** 4272 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame 4273 * @dev: network device 4274 * @buf: 802.11 frame (header + body) 4275 * @len: length of the frame data 4276 * 4277 * This function is called whenever deauthentication has been processed in 4278 * station mode. This includes both received deauthentication frames and 4279 * locally generated ones. This function may sleep. The caller must hold the 4280 * corresponding wdev's mutex. 4281 */ 4282 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4283 4284 /** 4285 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame 4286 * @dev: network device 4287 * @buf: deauthentication frame (header + body) 4288 * @len: length of the frame data 4289 * 4290 * This function is called whenever a received deauthentication or dissassoc 4291 * frame has been dropped in station mode because of MFP being used but the 4292 * frame was not protected. This function may sleep. 4293 */ 4294 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, 4295 const u8 *buf, size_t len); 4296 4297 /** 4298 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 4299 * @dev: network device 4300 * @addr: The source MAC address of the frame 4301 * @key_type: The key type that the received frame used 4302 * @key_id: Key identifier (0..3). Can be -1 if missing. 4303 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 4304 * @gfp: allocation flags 4305 * 4306 * This function is called whenever the local MAC detects a MIC failure in a 4307 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 4308 * primitive. 4309 */ 4310 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 4311 enum nl80211_key_type key_type, int key_id, 4312 const u8 *tsc, gfp_t gfp); 4313 4314 /** 4315 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 4316 * 4317 * @dev: network device 4318 * @bssid: the BSSID of the IBSS joined 4319 * @channel: the channel of the IBSS joined 4320 * @gfp: allocation flags 4321 * 4322 * This function notifies cfg80211 that the device joined an IBSS or 4323 * switched to a different BSSID. Before this function can be called, 4324 * either a beacon has to have been received from the IBSS, or one of 4325 * the cfg80211_inform_bss{,_frame} functions must have been called 4326 * with the locally generated beacon -- this guarantees that there is 4327 * always a scan result for this IBSS. cfg80211 will handle the rest. 4328 */ 4329 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, 4330 struct ieee80211_channel *channel, gfp_t gfp); 4331 4332 /** 4333 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 4334 * 4335 * @dev: network device 4336 * @macaddr: the MAC address of the new candidate 4337 * @ie: information elements advertised by the peer candidate 4338 * @ie_len: lenght of the information elements buffer 4339 * @gfp: allocation flags 4340 * 4341 * This function notifies cfg80211 that the mesh peer candidate has been 4342 * detected, most likely via a beacon or, less likely, via a probe response. 4343 * cfg80211 then sends a notification to userspace. 4344 */ 4345 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 4346 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 4347 4348 /** 4349 * DOC: RFkill integration 4350 * 4351 * RFkill integration in cfg80211 is almost invisible to drivers, 4352 * as cfg80211 automatically registers an rfkill instance for each 4353 * wireless device it knows about. Soft kill is also translated 4354 * into disconnecting and turning all interfaces off, drivers are 4355 * expected to turn off the device when all interfaces are down. 4356 * 4357 * However, devices may have a hard RFkill line, in which case they 4358 * also need to interact with the rfkill subsystem, via cfg80211. 4359 * They can do this with a few helper functions documented here. 4360 */ 4361 4362 /** 4363 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 4364 * @wiphy: the wiphy 4365 * @blocked: block status 4366 */ 4367 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 4368 4369 /** 4370 * wiphy_rfkill_start_polling - start polling rfkill 4371 * @wiphy: the wiphy 4372 */ 4373 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 4374 4375 /** 4376 * wiphy_rfkill_stop_polling - stop polling rfkill 4377 * @wiphy: the wiphy 4378 */ 4379 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 4380 4381 /** 4382 * DOC: Vendor commands 4383 * 4384 * Occasionally, there are special protocol or firmware features that 4385 * can't be implemented very openly. For this and similar cases, the 4386 * vendor command functionality allows implementing the features with 4387 * (typically closed-source) userspace and firmware, using nl80211 as 4388 * the configuration mechanism. 4389 * 4390 * A driver supporting vendor commands must register them as an array 4391 * in struct wiphy, with handlers for each one, each command has an 4392 * OUI and sub command ID to identify it. 4393 * 4394 * Note that this feature should not be (ab)used to implement protocol 4395 * features that could openly be shared across drivers. In particular, 4396 * it must never be required to use vendor commands to implement any 4397 * "normal" functionality that higher-level userspace like connection 4398 * managers etc. need. 4399 */ 4400 4401 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 4402 enum nl80211_commands cmd, 4403 enum nl80211_attrs attr, 4404 int approxlen); 4405 4406 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 4407 struct wireless_dev *wdev, 4408 enum nl80211_commands cmd, 4409 enum nl80211_attrs attr, 4410 int vendor_event_idx, 4411 int approxlen, gfp_t gfp); 4412 4413 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp); 4414 4415 /** 4416 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply 4417 * @wiphy: the wiphy 4418 * @approxlen: an upper bound of the length of the data that will 4419 * be put into the skb 4420 * 4421 * This function allocates and pre-fills an skb for a reply to 4422 * a vendor command. Since it is intended for a reply, calling 4423 * it outside of a vendor command's doit() operation is invalid. 4424 * 4425 * The returned skb is pre-filled with some identifying data in 4426 * a way that any data that is put into the skb (with skb_put(), 4427 * nla_put() or similar) will end up being within the 4428 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done 4429 * with the skb is adding data for the corresponding userspace tool 4430 * which can then read that data out of the vendor data attribute. 4431 * You must not modify the skb in any other way. 4432 * 4433 * When done, call cfg80211_vendor_cmd_reply() with the skb and return 4434 * its error code as the result of the doit() operation. 4435 * 4436 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4437 */ 4438 static inline struct sk_buff * 4439 cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4440 { 4441 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR, 4442 NL80211_ATTR_VENDOR_DATA, approxlen); 4443 } 4444 4445 /** 4446 * cfg80211_vendor_cmd_reply - send the reply skb 4447 * @skb: The skb, must have been allocated with 4448 * cfg80211_vendor_cmd_alloc_reply_skb() 4449 * 4450 * Since calling this function will usually be the last thing 4451 * before returning from the vendor command doit() you should 4452 * return the error code. Note that this function consumes the 4453 * skb regardless of the return value. 4454 * 4455 * Return: An error code or 0 on success. 4456 */ 4457 int cfg80211_vendor_cmd_reply(struct sk_buff *skb); 4458 4459 /** 4460 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb 4461 * @wiphy: the wiphy 4462 * @wdev: the wireless device 4463 * @event_idx: index of the vendor event in the wiphy's vendor_events 4464 * @approxlen: an upper bound of the length of the data that will 4465 * be put into the skb 4466 * @gfp: allocation flags 4467 * 4468 * This function allocates and pre-fills an skb for an event on the 4469 * vendor-specific multicast group. 4470 * 4471 * If wdev != NULL, both the ifindex and identifier of the specified 4472 * wireless device are added to the event message before the vendor data 4473 * attribute. 4474 * 4475 * When done filling the skb, call cfg80211_vendor_event() with the 4476 * skb to send the event. 4477 * 4478 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4479 */ 4480 static inline struct sk_buff * 4481 cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev, 4482 int approxlen, int event_idx, gfp_t gfp) 4483 { 4484 return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR, 4485 NL80211_ATTR_VENDOR_DATA, 4486 event_idx, approxlen, gfp); 4487 } 4488 4489 /** 4490 * cfg80211_vendor_event - send the event 4491 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc() 4492 * @gfp: allocation flags 4493 * 4494 * This function sends the given @skb, which must have been allocated 4495 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it. 4496 */ 4497 static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp) 4498 { 4499 __cfg80211_send_event_skb(skb, gfp); 4500 } 4501 4502 #ifdef CONFIG_NL80211_TESTMODE 4503 /** 4504 * DOC: Test mode 4505 * 4506 * Test mode is a set of utility functions to allow drivers to 4507 * interact with driver-specific tools to aid, for instance, 4508 * factory programming. 4509 * 4510 * This chapter describes how drivers interact with it, for more 4511 * information see the nl80211 book's chapter on it. 4512 */ 4513 4514 /** 4515 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 4516 * @wiphy: the wiphy 4517 * @approxlen: an upper bound of the length of the data that will 4518 * be put into the skb 4519 * 4520 * This function allocates and pre-fills an skb for a reply to 4521 * the testmode command. Since it is intended for a reply, calling 4522 * it outside of the @testmode_cmd operation is invalid. 4523 * 4524 * The returned skb is pre-filled with the wiphy index and set up in 4525 * a way that any data that is put into the skb (with skb_put(), 4526 * nla_put() or similar) will end up being within the 4527 * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done 4528 * with the skb is adding data for the corresponding userspace tool 4529 * which can then read that data out of the testdata attribute. You 4530 * must not modify the skb in any other way. 4531 * 4532 * When done, call cfg80211_testmode_reply() with the skb and return 4533 * its error code as the result of the @testmode_cmd operation. 4534 * 4535 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4536 */ 4537 static inline struct sk_buff * 4538 cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4539 { 4540 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE, 4541 NL80211_ATTR_TESTDATA, approxlen); 4542 } 4543 4544 /** 4545 * cfg80211_testmode_reply - send the reply skb 4546 * @skb: The skb, must have been allocated with 4547 * cfg80211_testmode_alloc_reply_skb() 4548 * 4549 * Since calling this function will usually be the last thing 4550 * before returning from the @testmode_cmd you should return 4551 * the error code. Note that this function consumes the skb 4552 * regardless of the return value. 4553 * 4554 * Return: An error code or 0 on success. 4555 */ 4556 static inline int cfg80211_testmode_reply(struct sk_buff *skb) 4557 { 4558 return cfg80211_vendor_cmd_reply(skb); 4559 } 4560 4561 /** 4562 * cfg80211_testmode_alloc_event_skb - allocate testmode event 4563 * @wiphy: the wiphy 4564 * @approxlen: an upper bound of the length of the data that will 4565 * be put into the skb 4566 * @gfp: allocation flags 4567 * 4568 * This function allocates and pre-fills an skb for an event on the 4569 * testmode multicast group. 4570 * 4571 * The returned skb is set up in the same way as with 4572 * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As 4573 * there, you should simply add data to it that will then end up in the 4574 * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb 4575 * in any other way. 4576 * 4577 * When done filling the skb, call cfg80211_testmode_event() with the 4578 * skb to send the event. 4579 * 4580 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4581 */ 4582 static inline struct sk_buff * 4583 cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp) 4584 { 4585 return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE, 4586 NL80211_ATTR_TESTDATA, -1, 4587 approxlen, gfp); 4588 } 4589 4590 /** 4591 * cfg80211_testmode_event - send the event 4592 * @skb: The skb, must have been allocated with 4593 * cfg80211_testmode_alloc_event_skb() 4594 * @gfp: allocation flags 4595 * 4596 * This function sends the given @skb, which must have been allocated 4597 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 4598 * consumes it. 4599 */ 4600 static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4601 { 4602 __cfg80211_send_event_skb(skb, gfp); 4603 } 4604 4605 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 4606 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 4607 #else 4608 #define CFG80211_TESTMODE_CMD(cmd) 4609 #define CFG80211_TESTMODE_DUMP(cmd) 4610 #endif 4611 4612 /** 4613 * cfg80211_connect_result - notify cfg80211 of connection result 4614 * 4615 * @dev: network device 4616 * @bssid: the BSSID of the AP 4617 * @req_ie: association request IEs (maybe be %NULL) 4618 * @req_ie_len: association request IEs length 4619 * @resp_ie: association response IEs (may be %NULL) 4620 * @resp_ie_len: assoc response IEs length 4621 * @status: status code, 0 for successful connection, use 4622 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 4623 * the real status code for failures. 4624 * @gfp: allocation flags 4625 * 4626 * It should be called by the underlying driver whenever connect() has 4627 * succeeded. 4628 */ 4629 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 4630 const u8 *req_ie, size_t req_ie_len, 4631 const u8 *resp_ie, size_t resp_ie_len, 4632 u16 status, gfp_t gfp); 4633 4634 /** 4635 * cfg80211_roamed - notify cfg80211 of roaming 4636 * 4637 * @dev: network device 4638 * @channel: the channel of the new AP 4639 * @bssid: the BSSID of the new AP 4640 * @req_ie: association request IEs (maybe be %NULL) 4641 * @req_ie_len: association request IEs length 4642 * @resp_ie: association response IEs (may be %NULL) 4643 * @resp_ie_len: assoc response IEs length 4644 * @gfp: allocation flags 4645 * 4646 * It should be called by the underlying driver whenever it roamed 4647 * from one AP to another while connected. 4648 */ 4649 void cfg80211_roamed(struct net_device *dev, 4650 struct ieee80211_channel *channel, 4651 const u8 *bssid, 4652 const u8 *req_ie, size_t req_ie_len, 4653 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4654 4655 /** 4656 * cfg80211_roamed_bss - notify cfg80211 of roaming 4657 * 4658 * @dev: network device 4659 * @bss: entry of bss to which STA got roamed 4660 * @req_ie: association request IEs (maybe be %NULL) 4661 * @req_ie_len: association request IEs length 4662 * @resp_ie: association response IEs (may be %NULL) 4663 * @resp_ie_len: assoc response IEs length 4664 * @gfp: allocation flags 4665 * 4666 * This is just a wrapper to notify cfg80211 of roaming event with driver 4667 * passing bss to avoid a race in timeout of the bss entry. It should be 4668 * called by the underlying driver whenever it roamed from one AP to another 4669 * while connected. Drivers which have roaming implemented in firmware 4670 * may use this function to avoid a race in bss entry timeout where the bss 4671 * entry of the new AP is seen in the driver, but gets timed out by the time 4672 * it is accessed in __cfg80211_roamed() due to delay in scheduling 4673 * rdev->event_work. In case of any failures, the reference is released 4674 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 4675 * it will be released while diconneting from the current bss. 4676 */ 4677 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 4678 const u8 *req_ie, size_t req_ie_len, 4679 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4680 4681 /** 4682 * cfg80211_disconnected - notify cfg80211 that connection was dropped 4683 * 4684 * @dev: network device 4685 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 4686 * @ie_len: length of IEs 4687 * @reason: reason code for the disconnection, set it to 0 if unknown 4688 * @locally_generated: disconnection was requested locally 4689 * @gfp: allocation flags 4690 * 4691 * After it calls this function, the driver should enter an idle state 4692 * and not try to connect to any AP any more. 4693 */ 4694 void cfg80211_disconnected(struct net_device *dev, u16 reason, 4695 const u8 *ie, size_t ie_len, 4696 bool locally_generated, gfp_t gfp); 4697 4698 /** 4699 * cfg80211_ready_on_channel - notification of remain_on_channel start 4700 * @wdev: wireless device 4701 * @cookie: the request cookie 4702 * @chan: The current channel (from remain_on_channel request) 4703 * @duration: Duration in milliseconds that the driver intents to remain on the 4704 * channel 4705 * @gfp: allocation flags 4706 */ 4707 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 4708 struct ieee80211_channel *chan, 4709 unsigned int duration, gfp_t gfp); 4710 4711 /** 4712 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 4713 * @wdev: wireless device 4714 * @cookie: the request cookie 4715 * @chan: The current channel (from remain_on_channel request) 4716 * @gfp: allocation flags 4717 */ 4718 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 4719 struct ieee80211_channel *chan, 4720 gfp_t gfp); 4721 4722 4723 /** 4724 * cfg80211_new_sta - notify userspace about station 4725 * 4726 * @dev: the netdev 4727 * @mac_addr: the station's address 4728 * @sinfo: the station information 4729 * @gfp: allocation flags 4730 */ 4731 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 4732 struct station_info *sinfo, gfp_t gfp); 4733 4734 /** 4735 * cfg80211_del_sta_sinfo - notify userspace about deletion of a station 4736 * @dev: the netdev 4737 * @mac_addr: the station's address 4738 * @sinfo: the station information/statistics 4739 * @gfp: allocation flags 4740 */ 4741 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 4742 struct station_info *sinfo, gfp_t gfp); 4743 4744 /** 4745 * cfg80211_del_sta - notify userspace about deletion of a station 4746 * 4747 * @dev: the netdev 4748 * @mac_addr: the station's address 4749 * @gfp: allocation flags 4750 */ 4751 static inline void cfg80211_del_sta(struct net_device *dev, 4752 const u8 *mac_addr, gfp_t gfp) 4753 { 4754 cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp); 4755 } 4756 4757 /** 4758 * cfg80211_conn_failed - connection request failed notification 4759 * 4760 * @dev: the netdev 4761 * @mac_addr: the station's address 4762 * @reason: the reason for connection failure 4763 * @gfp: allocation flags 4764 * 4765 * Whenever a station tries to connect to an AP and if the station 4766 * could not connect to the AP as the AP has rejected the connection 4767 * for some reasons, this function is called. 4768 * 4769 * The reason for connection failure can be any of the value from 4770 * nl80211_connect_failed_reason enum 4771 */ 4772 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 4773 enum nl80211_connect_failed_reason reason, 4774 gfp_t gfp); 4775 4776 /** 4777 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 4778 * @wdev: wireless device receiving the frame 4779 * @freq: Frequency on which the frame was received in MHz 4780 * @sig_dbm: signal strength in mBm, or 0 if unknown 4781 * @buf: Management frame (header + body) 4782 * @len: length of the frame data 4783 * @flags: flags, as defined in enum nl80211_rxmgmt_flags 4784 * 4785 * This function is called whenever an Action frame is received for a station 4786 * mode interface, but is not processed in kernel. 4787 * 4788 * Return: %true if a user space application has registered for this frame. 4789 * For action frames, that makes it responsible for rejecting unrecognized 4790 * action frames; %false otherwise, in which case for action frames the 4791 * driver is responsible for rejecting the frame. 4792 */ 4793 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm, 4794 const u8 *buf, size_t len, u32 flags); 4795 4796 /** 4797 * cfg80211_mgmt_tx_status - notification of TX status for management frame 4798 * @wdev: wireless device receiving the frame 4799 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 4800 * @buf: Management frame (header + body) 4801 * @len: length of the frame data 4802 * @ack: Whether frame was acknowledged 4803 * @gfp: context flags 4804 * 4805 * This function is called whenever a management frame was requested to be 4806 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 4807 * transmission attempt. 4808 */ 4809 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 4810 const u8 *buf, size_t len, bool ack, gfp_t gfp); 4811 4812 4813 /** 4814 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 4815 * @dev: network device 4816 * @rssi_event: the triggered RSSI event 4817 * @gfp: context flags 4818 * 4819 * This function is called when a configured connection quality monitoring 4820 * rssi threshold reached event occurs. 4821 */ 4822 void cfg80211_cqm_rssi_notify(struct net_device *dev, 4823 enum nl80211_cqm_rssi_threshold_event rssi_event, 4824 gfp_t gfp); 4825 4826 /** 4827 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 4828 * @dev: network device 4829 * @peer: peer's MAC address 4830 * @num_packets: how many packets were lost -- should be a fixed threshold 4831 * but probably no less than maybe 50, or maybe a throughput dependent 4832 * threshold (to account for temporary interference) 4833 * @gfp: context flags 4834 */ 4835 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 4836 const u8 *peer, u32 num_packets, gfp_t gfp); 4837 4838 /** 4839 * cfg80211_cqm_txe_notify - TX error rate event 4840 * @dev: network device 4841 * @peer: peer's MAC address 4842 * @num_packets: how many packets were lost 4843 * @rate: % of packets which failed transmission 4844 * @intvl: interval (in s) over which the TX failure threshold was breached. 4845 * @gfp: context flags 4846 * 4847 * Notify userspace when configured % TX failures over number of packets in a 4848 * given interval is exceeded. 4849 */ 4850 void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, 4851 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp); 4852 4853 /** 4854 * cfg80211_cqm_beacon_loss_notify - beacon loss event 4855 * @dev: network device 4856 * @gfp: context flags 4857 * 4858 * Notify userspace about beacon loss from the connected AP. 4859 */ 4860 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp); 4861 4862 /** 4863 * cfg80211_radar_event - radar detection event 4864 * @wiphy: the wiphy 4865 * @chandef: chandef for the current channel 4866 * @gfp: context flags 4867 * 4868 * This function is called when a radar is detected on the current chanenl. 4869 */ 4870 void cfg80211_radar_event(struct wiphy *wiphy, 4871 struct cfg80211_chan_def *chandef, gfp_t gfp); 4872 4873 /** 4874 * cfg80211_cac_event - Channel availability check (CAC) event 4875 * @netdev: network device 4876 * @chandef: chandef for the current channel 4877 * @event: type of event 4878 * @gfp: context flags 4879 * 4880 * This function is called when a Channel availability check (CAC) is finished 4881 * or aborted. This must be called to notify the completion of a CAC process, 4882 * also by full-MAC drivers. 4883 */ 4884 void cfg80211_cac_event(struct net_device *netdev, 4885 const struct cfg80211_chan_def *chandef, 4886 enum nl80211_radar_event event, gfp_t gfp); 4887 4888 4889 /** 4890 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 4891 * @dev: network device 4892 * @bssid: BSSID of AP (to avoid races) 4893 * @replay_ctr: new replay counter 4894 * @gfp: allocation flags 4895 */ 4896 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 4897 const u8 *replay_ctr, gfp_t gfp); 4898 4899 /** 4900 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 4901 * @dev: network device 4902 * @index: candidate index (the smaller the index, the higher the priority) 4903 * @bssid: BSSID of AP 4904 * @preauth: Whether AP advertises support for RSN pre-authentication 4905 * @gfp: allocation flags 4906 */ 4907 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 4908 const u8 *bssid, bool preauth, gfp_t gfp); 4909 4910 /** 4911 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 4912 * @dev: The device the frame matched to 4913 * @addr: the transmitter address 4914 * @gfp: context flags 4915 * 4916 * This function is used in AP mode (only!) to inform userspace that 4917 * a spurious class 3 frame was received, to be able to deauth the 4918 * sender. 4919 * Return: %true if the frame was passed to userspace (or this failed 4920 * for a reason other than not having a subscription.) 4921 */ 4922 bool cfg80211_rx_spurious_frame(struct net_device *dev, 4923 const u8 *addr, gfp_t gfp); 4924 4925 /** 4926 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 4927 * @dev: The device the frame matched to 4928 * @addr: the transmitter address 4929 * @gfp: context flags 4930 * 4931 * This function is used in AP mode (only!) to inform userspace that 4932 * an associated station sent a 4addr frame but that wasn't expected. 4933 * It is allowed and desirable to send this event only once for each 4934 * station to avoid event flooding. 4935 * Return: %true if the frame was passed to userspace (or this failed 4936 * for a reason other than not having a subscription.) 4937 */ 4938 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 4939 const u8 *addr, gfp_t gfp); 4940 4941 /** 4942 * cfg80211_probe_status - notify userspace about probe status 4943 * @dev: the device the probe was sent on 4944 * @addr: the address of the peer 4945 * @cookie: the cookie filled in @probe_client previously 4946 * @acked: indicates whether probe was acked or not 4947 * @gfp: allocation flags 4948 */ 4949 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 4950 u64 cookie, bool acked, gfp_t gfp); 4951 4952 /** 4953 * cfg80211_report_obss_beacon - report beacon from other APs 4954 * @wiphy: The wiphy that received the beacon 4955 * @frame: the frame 4956 * @len: length of the frame 4957 * @freq: frequency the frame was received on 4958 * @sig_dbm: signal strength in mBm, or 0 if unknown 4959 * 4960 * Use this function to report to userspace when a beacon was 4961 * received. It is not useful to call this when there is no 4962 * netdev that is in AP/GO mode. 4963 */ 4964 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 4965 const u8 *frame, size_t len, 4966 int freq, int sig_dbm); 4967 4968 /** 4969 * cfg80211_reg_can_beacon - check if beaconing is allowed 4970 * @wiphy: the wiphy 4971 * @chandef: the channel definition 4972 * @iftype: interface type 4973 * 4974 * Return: %true if there is no secondary channel or the secondary channel(s) 4975 * can be used for beaconing (i.e. is not a radar channel etc.) 4976 */ 4977 bool cfg80211_reg_can_beacon(struct wiphy *wiphy, 4978 struct cfg80211_chan_def *chandef, 4979 enum nl80211_iftype iftype); 4980 4981 /** 4982 * cfg80211_reg_can_beacon_relax - check if beaconing is allowed with relaxation 4983 * @wiphy: the wiphy 4984 * @chandef: the channel definition 4985 * @iftype: interface type 4986 * 4987 * Return: %true if there is no secondary channel or the secondary channel(s) 4988 * can be used for beaconing (i.e. is not a radar channel etc.). This version 4989 * also checks if IR-relaxation conditions apply, to allow beaconing under 4990 * more permissive conditions. 4991 * 4992 * Requires the RTNL to be held. 4993 */ 4994 bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy, 4995 struct cfg80211_chan_def *chandef, 4996 enum nl80211_iftype iftype); 4997 4998 /* 4999 * cfg80211_ch_switch_notify - update wdev channel and notify userspace 5000 * @dev: the device which switched channels 5001 * @chandef: the new channel definition 5002 * 5003 * Caller must acquire wdev_lock, therefore must only be called from sleepable 5004 * driver context! 5005 */ 5006 void cfg80211_ch_switch_notify(struct net_device *dev, 5007 struct cfg80211_chan_def *chandef); 5008 5009 /* 5010 * cfg80211_ch_switch_started_notify - notify channel switch start 5011 * @dev: the device on which the channel switch started 5012 * @chandef: the future channel definition 5013 * @count: the number of TBTTs until the channel switch happens 5014 * 5015 * Inform the userspace about the channel switch that has just 5016 * started, so that it can take appropriate actions (eg. starting 5017 * channel switch on other vifs), if necessary. 5018 */ 5019 void cfg80211_ch_switch_started_notify(struct net_device *dev, 5020 struct cfg80211_chan_def *chandef, 5021 u8 count); 5022 5023 /** 5024 * ieee80211_operating_class_to_band - convert operating class to band 5025 * 5026 * @operating_class: the operating class to convert 5027 * @band: band pointer to fill 5028 * 5029 * Returns %true if the conversion was successful, %false otherwise. 5030 */ 5031 bool ieee80211_operating_class_to_band(u8 operating_class, 5032 enum ieee80211_band *band); 5033 5034 /** 5035 * ieee80211_chandef_to_operating_class - convert chandef to operation class 5036 * 5037 * @chandef: the chandef to convert 5038 * @op_class: a pointer to the resulting operating class 5039 * 5040 * Returns %true if the conversion was successful, %false otherwise. 5041 */ 5042 bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, 5043 u8 *op_class); 5044 5045 /* 5046 * cfg80211_tdls_oper_request - request userspace to perform TDLS operation 5047 * @dev: the device on which the operation is requested 5048 * @peer: the MAC address of the peer device 5049 * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or 5050 * NL80211_TDLS_TEARDOWN) 5051 * @reason_code: the reason code for teardown request 5052 * @gfp: allocation flags 5053 * 5054 * This function is used to request userspace to perform TDLS operation that 5055 * requires knowledge of keys, i.e., link setup or teardown when the AP 5056 * connection uses encryption. This is optional mechanism for the driver to use 5057 * if it can automatically determine when a TDLS link could be useful (e.g., 5058 * based on traffic and signal strength for a peer). 5059 */ 5060 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 5061 enum nl80211_tdls_operation oper, 5062 u16 reason_code, gfp_t gfp); 5063 5064 /* 5065 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 5066 * @rate: given rate_info to calculate bitrate from 5067 * 5068 * return 0 if MCS index >= 32 5069 */ 5070 u32 cfg80211_calculate_bitrate(struct rate_info *rate); 5071 5072 /** 5073 * cfg80211_unregister_wdev - remove the given wdev 5074 * @wdev: struct wireless_dev to remove 5075 * 5076 * Call this function only for wdevs that have no netdev assigned, 5077 * e.g. P2P Devices. It removes the device from the list so that 5078 * it can no longer be used. It is necessary to call this function 5079 * even when cfg80211 requests the removal of the interface by 5080 * calling the del_virtual_intf() callback. The function must also 5081 * be called when the driver wishes to unregister the wdev, e.g. 5082 * when the device is unbound from the driver. 5083 * 5084 * Requires the RTNL to be held. 5085 */ 5086 void cfg80211_unregister_wdev(struct wireless_dev *wdev); 5087 5088 /** 5089 * struct cfg80211_ft_event - FT Information Elements 5090 * @ies: FT IEs 5091 * @ies_len: length of the FT IE in bytes 5092 * @target_ap: target AP's MAC address 5093 * @ric_ies: RIC IE 5094 * @ric_ies_len: length of the RIC IE in bytes 5095 */ 5096 struct cfg80211_ft_event_params { 5097 const u8 *ies; 5098 size_t ies_len; 5099 const u8 *target_ap; 5100 const u8 *ric_ies; 5101 size_t ric_ies_len; 5102 }; 5103 5104 /** 5105 * cfg80211_ft_event - notify userspace about FT IE and RIC IE 5106 * @netdev: network device 5107 * @ft_event: IE information 5108 */ 5109 void cfg80211_ft_event(struct net_device *netdev, 5110 struct cfg80211_ft_event_params *ft_event); 5111 5112 /** 5113 * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer 5114 * @ies: the input IE buffer 5115 * @len: the input length 5116 * @attr: the attribute ID to find 5117 * @buf: output buffer, can be %NULL if the data isn't needed, e.g. 5118 * if the function is only called to get the needed buffer size 5119 * @bufsize: size of the output buffer 5120 * 5121 * The function finds a given P2P attribute in the (vendor) IEs and 5122 * copies its contents to the given buffer. 5123 * 5124 * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is 5125 * malformed or the attribute can't be found (respectively), or the 5126 * length of the found attribute (which can be zero). 5127 */ 5128 int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, 5129 enum ieee80211_p2p_attr_id attr, 5130 u8 *buf, unsigned int bufsize); 5131 5132 /** 5133 * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC) 5134 * @ies: the IE buffer 5135 * @ielen: the length of the IE buffer 5136 * @ids: an array with element IDs that are allowed before 5137 * the split 5138 * @n_ids: the size of the element ID array 5139 * @after_ric: array IE types that come after the RIC element 5140 * @n_after_ric: size of the @after_ric array 5141 * @offset: offset where to start splitting in the buffer 5142 * 5143 * This function splits an IE buffer by updating the @offset 5144 * variable to point to the location where the buffer should be 5145 * split. 5146 * 5147 * It assumes that the given IE buffer is well-formed, this 5148 * has to be guaranteed by the caller! 5149 * 5150 * It also assumes that the IEs in the buffer are ordered 5151 * correctly, if not the result of using this function will not 5152 * be ordered correctly either, i.e. it does no reordering. 5153 * 5154 * The function returns the offset where the next part of the 5155 * buffer starts, which may be @ielen if the entire (remainder) 5156 * of the buffer should be used. 5157 */ 5158 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 5159 const u8 *ids, int n_ids, 5160 const u8 *after_ric, int n_after_ric, 5161 size_t offset); 5162 5163 /** 5164 * ieee80211_ie_split - split an IE buffer according to ordering 5165 * @ies: the IE buffer 5166 * @ielen: the length of the IE buffer 5167 * @ids: an array with element IDs that are allowed before 5168 * the split 5169 * @n_ids: the size of the element ID array 5170 * @offset: offset where to start splitting in the buffer 5171 * 5172 * This function splits an IE buffer by updating the @offset 5173 * variable to point to the location where the buffer should be 5174 * split. 5175 * 5176 * It assumes that the given IE buffer is well-formed, this 5177 * has to be guaranteed by the caller! 5178 * 5179 * It also assumes that the IEs in the buffer are ordered 5180 * correctly, if not the result of using this function will not 5181 * be ordered correctly either, i.e. it does no reordering. 5182 * 5183 * The function returns the offset where the next part of the 5184 * buffer starts, which may be @ielen if the entire (remainder) 5185 * of the buffer should be used. 5186 */ 5187 static inline size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 5188 const u8 *ids, int n_ids, size_t offset) 5189 { 5190 return ieee80211_ie_split_ric(ies, ielen, ids, n_ids, NULL, 0, offset); 5191 } 5192 5193 /** 5194 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN 5195 * @wdev: the wireless device reporting the wakeup 5196 * @wakeup: the wakeup report 5197 * @gfp: allocation flags 5198 * 5199 * This function reports that the given device woke up. If it 5200 * caused the wakeup, report the reason(s), otherwise you may 5201 * pass %NULL as the @wakeup parameter to advertise that something 5202 * else caused the wakeup. 5203 */ 5204 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 5205 struct cfg80211_wowlan_wakeup *wakeup, 5206 gfp_t gfp); 5207 5208 /** 5209 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver. 5210 * 5211 * @wdev: the wireless device for which critical protocol is stopped. 5212 * @gfp: allocation flags 5213 * 5214 * This function can be called by the driver to indicate it has reverted 5215 * operation back to normal. One reason could be that the duration given 5216 * by .crit_proto_start() has expired. 5217 */ 5218 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); 5219 5220 /** 5221 * ieee80211_get_num_supported_channels - get number of channels device has 5222 * @wiphy: the wiphy 5223 * 5224 * Return: the number of channels supported by the device. 5225 */ 5226 unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); 5227 5228 /** 5229 * cfg80211_check_combinations - check interface combinations 5230 * 5231 * @wiphy: the wiphy 5232 * @num_different_channels: the number of different channels we want 5233 * to use for verification 5234 * @radar_detect: a bitmap where each bit corresponds to a channel 5235 * width where radar detection is needed, as in the definition of 5236 * &struct ieee80211_iface_combination.@radar_detect_widths 5237 * @iftype_num: array with the numbers of interfaces of each interface 5238 * type. The index is the interface type as specified in &enum 5239 * nl80211_iftype. 5240 * 5241 * This function can be called by the driver to check whether a 5242 * combination of interfaces and their types are allowed according to 5243 * the interface combinations. 5244 */ 5245 int cfg80211_check_combinations(struct wiphy *wiphy, 5246 const int num_different_channels, 5247 const u8 radar_detect, 5248 const int iftype_num[NUM_NL80211_IFTYPES]); 5249 5250 /** 5251 * cfg80211_iter_combinations - iterate over matching combinations 5252 * 5253 * @wiphy: the wiphy 5254 * @num_different_channels: the number of different channels we want 5255 * to use for verification 5256 * @radar_detect: a bitmap where each bit corresponds to a channel 5257 * width where radar detection is needed, as in the definition of 5258 * &struct ieee80211_iface_combination.@radar_detect_widths 5259 * @iftype_num: array with the numbers of interfaces of each interface 5260 * type. The index is the interface type as specified in &enum 5261 * nl80211_iftype. 5262 * @iter: function to call for each matching combination 5263 * @data: pointer to pass to iter function 5264 * 5265 * This function can be called by the driver to check what possible 5266 * combinations it fits in at a given moment, e.g. for channel switching 5267 * purposes. 5268 */ 5269 int cfg80211_iter_combinations(struct wiphy *wiphy, 5270 const int num_different_channels, 5271 const u8 radar_detect, 5272 const int iftype_num[NUM_NL80211_IFTYPES], 5273 void (*iter)(const struct ieee80211_iface_combination *c, 5274 void *data), 5275 void *data); 5276 5277 /* 5278 * cfg80211_stop_iface - trigger interface disconnection 5279 * 5280 * @wiphy: the wiphy 5281 * @wdev: wireless device 5282 * @gfp: context flags 5283 * 5284 * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA 5285 * disconnected. 5286 * 5287 * Note: This doesn't need any locks and is asynchronous. 5288 */ 5289 void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, 5290 gfp_t gfp); 5291 5292 /** 5293 * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy 5294 * @wiphy: the wiphy to shut down 5295 * 5296 * This function shuts down all interfaces belonging to this wiphy by 5297 * calling dev_close() (and treating non-netdev interfaces as needed). 5298 * It shouldn't really be used unless there are some fatal device errors 5299 * that really can't be recovered in any other way. 5300 * 5301 * Callers must hold the RTNL and be able to deal with callbacks into 5302 * the driver while the function is running. 5303 */ 5304 void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy); 5305 5306 /** 5307 * wiphy_ext_feature_set - set the extended feature flag 5308 * 5309 * @wiphy: the wiphy to modify. 5310 * @ftidx: extended feature bit index. 5311 * 5312 * The extended features are flagged in multiple bytes (see 5313 * &struct wiphy.@ext_features) 5314 */ 5315 static inline void wiphy_ext_feature_set(struct wiphy *wiphy, 5316 enum nl80211_ext_feature_index ftidx) 5317 { 5318 u8 *ft_byte; 5319 5320 ft_byte = &wiphy->ext_features[ftidx / 8]; 5321 *ft_byte |= BIT(ftidx % 8); 5322 } 5323 5324 /** 5325 * wiphy_ext_feature_isset - check the extended feature flag 5326 * 5327 * @wiphy: the wiphy to modify. 5328 * @ftidx: extended feature bit index. 5329 * 5330 * The extended features are flagged in multiple bytes (see 5331 * &struct wiphy.@ext_features) 5332 */ 5333 static inline bool 5334 wiphy_ext_feature_isset(struct wiphy *wiphy, 5335 enum nl80211_ext_feature_index ftidx) 5336 { 5337 u8 ft_byte; 5338 5339 ft_byte = wiphy->ext_features[ftidx / 8]; 5340 return (ft_byte & BIT(ftidx % 8)) != 0; 5341 } 5342 5343 /* ethtool helper */ 5344 void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info); 5345 5346 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 5347 5348 /* wiphy_printk helpers, similar to dev_printk */ 5349 5350 #define wiphy_printk(level, wiphy, format, args...) \ 5351 dev_printk(level, &(wiphy)->dev, format, ##args) 5352 #define wiphy_emerg(wiphy, format, args...) \ 5353 dev_emerg(&(wiphy)->dev, format, ##args) 5354 #define wiphy_alert(wiphy, format, args...) \ 5355 dev_alert(&(wiphy)->dev, format, ##args) 5356 #define wiphy_crit(wiphy, format, args...) \ 5357 dev_crit(&(wiphy)->dev, format, ##args) 5358 #define wiphy_err(wiphy, format, args...) \ 5359 dev_err(&(wiphy)->dev, format, ##args) 5360 #define wiphy_warn(wiphy, format, args...) \ 5361 dev_warn(&(wiphy)->dev, format, ##args) 5362 #define wiphy_notice(wiphy, format, args...) \ 5363 dev_notice(&(wiphy)->dev, format, ##args) 5364 #define wiphy_info(wiphy, format, args...) \ 5365 dev_info(&(wiphy)->dev, format, ##args) 5366 5367 #define wiphy_debug(wiphy, format, args...) \ 5368 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 5369 5370 #define wiphy_dbg(wiphy, format, args...) \ 5371 dev_dbg(&(wiphy)->dev, format, ##args) 5372 5373 #if defined(VERBOSE_DEBUG) 5374 #define wiphy_vdbg wiphy_dbg 5375 #else 5376 #define wiphy_vdbg(wiphy, format, args...) \ 5377 ({ \ 5378 if (0) \ 5379 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 5380 0; \ 5381 }) 5382 #endif 5383 5384 /* 5385 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 5386 * of using a WARN/WARN_ON to get the message out, including the 5387 * file/line information and a backtrace. 5388 */ 5389 #define wiphy_WARN(wiphy, format, args...) \ 5390 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 5391 5392 #endif /* __NET_CFG80211_H */ 5393