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 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/netdevice.h> 15 #include <linux/debugfs.h> 16 #include <linux/list.h> 17 #include <linux/bug.h> 18 #include <linux/netlink.h> 19 #include <linux/skbuff.h> 20 #include <linux/nl80211.h> 21 #include <linux/if_ether.h> 22 #include <linux/ieee80211.h> 23 #include <linux/net.h> 24 #include <net/regulatory.h> 25 26 /** 27 * DOC: Introduction 28 * 29 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 30 * userspace and drivers, and offers some utility functionality associated 31 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 32 * by all modern wireless drivers in Linux, so that they offer a consistent 33 * API through nl80211. For backward compatibility, cfg80211 also offers 34 * wireless extensions to userspace, but hides them from drivers completely. 35 * 36 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 37 * use restrictions. 38 */ 39 40 41 /** 42 * DOC: Device registration 43 * 44 * In order for a driver to use cfg80211, it must register the hardware device 45 * with cfg80211. This happens through a number of hardware capability structs 46 * described below. 47 * 48 * The fundamental structure for each device is the 'wiphy', of which each 49 * instance describes a physical wireless device connected to the system. Each 50 * such wiphy can have zero, one, or many virtual interfaces associated with 51 * it, which need to be identified as such by pointing the network interface's 52 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 53 * the wireless part of the interface, normally this struct is embedded in the 54 * network interface's private data area. Drivers can optionally allow creating 55 * or destroying virtual interfaces on the fly, but without at least one or the 56 * ability to create some the wireless device isn't useful. 57 * 58 * Each wiphy structure contains device capability information, and also has 59 * a pointer to the various operations the driver offers. The definitions and 60 * structures here describe these capabilities in detail. 61 */ 62 63 struct wiphy; 64 65 /* 66 * wireless hardware capability structures 67 */ 68 69 /** 70 * enum ieee80211_band - supported frequency bands 71 * 72 * The bands are assigned this way because the supported 73 * bitrates differ in these bands. 74 * 75 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 76 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 77 * @IEEE80211_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz) 78 * @IEEE80211_NUM_BANDS: number of defined bands 79 */ 80 enum ieee80211_band { 81 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 82 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 83 IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ, 84 85 /* keep last */ 86 IEEE80211_NUM_BANDS 87 }; 88 89 /** 90 * enum ieee80211_channel_flags - channel flags 91 * 92 * Channel flags set by the regulatory control code. 93 * 94 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 95 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes 96 * sending probe requests or beaconing. 97 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 98 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 99 * is not permitted. 100 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 101 * is not permitted. 102 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel. 103 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band, 104 * this flag indicates that an 80 MHz channel cannot use this 105 * channel as the control or any of the secondary channels. 106 * This may be due to the driver or due to regulatory bandwidth 107 * restrictions. 108 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band, 109 * this flag indicates that an 160 MHz channel cannot use this 110 * channel as the control or any of the secondary channels. 111 * This may be due to the driver or due to regulatory bandwidth 112 * restrictions. 113 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY 114 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT 115 * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted 116 * on this channel. 117 * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted 118 * on this channel. 119 * 120 */ 121 enum ieee80211_channel_flags { 122 IEEE80211_CHAN_DISABLED = 1<<0, 123 IEEE80211_CHAN_NO_IR = 1<<1, 124 /* hole at 1<<2 */ 125 IEEE80211_CHAN_RADAR = 1<<3, 126 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 127 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 128 IEEE80211_CHAN_NO_OFDM = 1<<6, 129 IEEE80211_CHAN_NO_80MHZ = 1<<7, 130 IEEE80211_CHAN_NO_160MHZ = 1<<8, 131 IEEE80211_CHAN_INDOOR_ONLY = 1<<9, 132 IEEE80211_CHAN_IR_CONCURRENT = 1<<10, 133 IEEE80211_CHAN_NO_20MHZ = 1<<11, 134 IEEE80211_CHAN_NO_10MHZ = 1<<12, 135 }; 136 137 #define IEEE80211_CHAN_NO_HT40 \ 138 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 139 140 #define IEEE80211_DFS_MIN_CAC_TIME_MS 60000 141 #define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000) 142 143 /** 144 * struct ieee80211_channel - channel definition 145 * 146 * This structure describes a single channel for use 147 * with cfg80211. 148 * 149 * @center_freq: center frequency in MHz 150 * @hw_value: hardware-specific value for the channel 151 * @flags: channel flags from &enum ieee80211_channel_flags. 152 * @orig_flags: channel flags at registration time, used by regulatory 153 * code to support devices with additional restrictions 154 * @band: band this channel belongs to. 155 * @max_antenna_gain: maximum antenna gain in dBi 156 * @max_power: maximum transmission power (in dBm) 157 * @max_reg_power: maximum regulatory transmission power (in dBm) 158 * @beacon_found: helper to regulatory code to indicate when a beacon 159 * has been found on this channel. Use regulatory_hint_found_beacon() 160 * to enable this, this is useful only on 5 GHz band. 161 * @orig_mag: internal use 162 * @orig_mpwr: internal use 163 * @dfs_state: current state of this channel. Only relevant if radar is required 164 * on this channel. 165 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. 166 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels. 167 */ 168 struct ieee80211_channel { 169 enum ieee80211_band band; 170 u16 center_freq; 171 u16 hw_value; 172 u32 flags; 173 int max_antenna_gain; 174 int max_power; 175 int max_reg_power; 176 bool beacon_found; 177 u32 orig_flags; 178 int orig_mag, orig_mpwr; 179 enum nl80211_dfs_state dfs_state; 180 unsigned long dfs_state_entered; 181 unsigned int dfs_cac_ms; 182 }; 183 184 /** 185 * enum ieee80211_rate_flags - rate flags 186 * 187 * Hardware/specification flags for rates. These are structured 188 * in a way that allows using the same bitrate structure for 189 * different bands/PHY modes. 190 * 191 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 192 * preamble on this bitrate; only relevant in 2.4GHz band and 193 * with CCK rates. 194 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 195 * when used with 802.11a (on the 5 GHz band); filled by the 196 * core code when registering the wiphy. 197 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 198 * when used with 802.11b (on the 2.4 GHz band); filled by the 199 * core code when registering the wiphy. 200 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 201 * when used with 802.11g (on the 2.4 GHz band); filled by the 202 * core code when registering the wiphy. 203 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 204 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode 205 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode 206 */ 207 enum ieee80211_rate_flags { 208 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 209 IEEE80211_RATE_MANDATORY_A = 1<<1, 210 IEEE80211_RATE_MANDATORY_B = 1<<2, 211 IEEE80211_RATE_MANDATORY_G = 1<<3, 212 IEEE80211_RATE_ERP_G = 1<<4, 213 IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5, 214 IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6, 215 }; 216 217 /** 218 * enum ieee80211_bss_type - BSS type filter 219 * 220 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS 221 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS 222 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS 223 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS 224 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type 225 */ 226 enum ieee80211_bss_type { 227 IEEE80211_BSS_TYPE_ESS, 228 IEEE80211_BSS_TYPE_PBSS, 229 IEEE80211_BSS_TYPE_IBSS, 230 IEEE80211_BSS_TYPE_MBSS, 231 IEEE80211_BSS_TYPE_ANY 232 }; 233 234 /** 235 * enum ieee80211_privacy - BSS privacy filter 236 * 237 * @IEEE80211_PRIVACY_ON: privacy bit set 238 * @IEEE80211_PRIVACY_OFF: privacy bit clear 239 * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting 240 */ 241 enum ieee80211_privacy { 242 IEEE80211_PRIVACY_ON, 243 IEEE80211_PRIVACY_OFF, 244 IEEE80211_PRIVACY_ANY 245 }; 246 247 #define IEEE80211_PRIVACY(x) \ 248 ((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF) 249 250 /** 251 * struct ieee80211_rate - bitrate definition 252 * 253 * This structure describes a bitrate that an 802.11 PHY can 254 * operate with. The two values @hw_value and @hw_value_short 255 * are only for driver use when pointers to this structure are 256 * passed around. 257 * 258 * @flags: rate-specific flags 259 * @bitrate: bitrate in units of 100 Kbps 260 * @hw_value: driver/hardware value for this rate 261 * @hw_value_short: driver/hardware value for this rate when 262 * short preamble is used 263 */ 264 struct ieee80211_rate { 265 u32 flags; 266 u16 bitrate; 267 u16 hw_value, hw_value_short; 268 }; 269 270 /** 271 * struct ieee80211_sta_ht_cap - STA's HT capabilities 272 * 273 * This structure describes most essential parameters needed 274 * to describe 802.11n HT capabilities for an STA. 275 * 276 * @ht_supported: is HT supported by the STA 277 * @cap: HT capabilities map as described in 802.11n spec 278 * @ampdu_factor: Maximum A-MPDU length factor 279 * @ampdu_density: Minimum A-MPDU spacing 280 * @mcs: Supported MCS rates 281 */ 282 struct ieee80211_sta_ht_cap { 283 u16 cap; /* use IEEE80211_HT_CAP_ */ 284 bool ht_supported; 285 u8 ampdu_factor; 286 u8 ampdu_density; 287 struct ieee80211_mcs_info mcs; 288 }; 289 290 /** 291 * struct ieee80211_sta_vht_cap - STA's VHT capabilities 292 * 293 * This structure describes most essential parameters needed 294 * to describe 802.11ac VHT capabilities for an STA. 295 * 296 * @vht_supported: is VHT supported by the STA 297 * @cap: VHT capabilities map as described in 802.11ac spec 298 * @vht_mcs: Supported VHT MCS rates 299 */ 300 struct ieee80211_sta_vht_cap { 301 bool vht_supported; 302 u32 cap; /* use IEEE80211_VHT_CAP_ */ 303 struct ieee80211_vht_mcs_info vht_mcs; 304 }; 305 306 /** 307 * struct ieee80211_supported_band - frequency band definition 308 * 309 * This structure describes a frequency band a wiphy 310 * is able to operate in. 311 * 312 * @channels: Array of channels the hardware can operate in 313 * in this band. 314 * @band: the band this structure represents 315 * @n_channels: Number of channels in @channels 316 * @bitrates: Array of bitrates the hardware can operate with 317 * in this band. Must be sorted to give a valid "supported 318 * rates" IE, i.e. CCK rates first, then OFDM. 319 * @n_bitrates: Number of bitrates in @bitrates 320 * @ht_cap: HT capabilities in this band 321 * @vht_cap: VHT capabilities in this band 322 */ 323 struct ieee80211_supported_band { 324 struct ieee80211_channel *channels; 325 struct ieee80211_rate *bitrates; 326 enum ieee80211_band band; 327 int n_channels; 328 int n_bitrates; 329 struct ieee80211_sta_ht_cap ht_cap; 330 struct ieee80211_sta_vht_cap vht_cap; 331 }; 332 333 /* 334 * Wireless hardware/device configuration structures and methods 335 */ 336 337 /** 338 * DOC: Actions and configuration 339 * 340 * Each wireless device and each virtual interface offer a set of configuration 341 * operations and other actions that are invoked by userspace. Each of these 342 * actions is described in the operations structure, and the parameters these 343 * operations use are described separately. 344 * 345 * Additionally, some operations are asynchronous and expect to get status 346 * information via some functions that drivers need to call. 347 * 348 * Scanning and BSS list handling with its associated functionality is described 349 * in a separate chapter. 350 */ 351 352 /** 353 * struct vif_params - describes virtual interface parameters 354 * @use_4addr: use 4-address frames 355 * @macaddr: address to use for this virtual interface. 356 * If this parameter is set to zero address the driver may 357 * determine the address as needed. 358 * This feature is only fully supported by drivers that enable the 359 * %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating 360 ** only p2p devices with specified MAC. 361 */ 362 struct vif_params { 363 int use_4addr; 364 u8 macaddr[ETH_ALEN]; 365 }; 366 367 /** 368 * struct key_params - key information 369 * 370 * Information about a key 371 * 372 * @key: key material 373 * @key_len: length of key material 374 * @cipher: cipher suite selector 375 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 376 * with the get_key() callback, must be in little endian, 377 * length given by @seq_len. 378 * @seq_len: length of @seq. 379 */ 380 struct key_params { 381 const u8 *key; 382 const u8 *seq; 383 int key_len; 384 int seq_len; 385 u32 cipher; 386 }; 387 388 /** 389 * struct cfg80211_chan_def - channel definition 390 * @chan: the (control) channel 391 * @width: channel width 392 * @center_freq1: center frequency of first segment 393 * @center_freq2: center frequency of second segment 394 * (only with 80+80 MHz) 395 */ 396 struct cfg80211_chan_def { 397 struct ieee80211_channel *chan; 398 enum nl80211_chan_width width; 399 u32 center_freq1; 400 u32 center_freq2; 401 }; 402 403 /** 404 * cfg80211_get_chandef_type - return old channel type from chandef 405 * @chandef: the channel definition 406 * 407 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given 408 * chandef, which must have a bandwidth allowing this conversion. 409 */ 410 static inline enum nl80211_channel_type 411 cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) 412 { 413 switch (chandef->width) { 414 case NL80211_CHAN_WIDTH_20_NOHT: 415 return NL80211_CHAN_NO_HT; 416 case NL80211_CHAN_WIDTH_20: 417 return NL80211_CHAN_HT20; 418 case NL80211_CHAN_WIDTH_40: 419 if (chandef->center_freq1 > chandef->chan->center_freq) 420 return NL80211_CHAN_HT40PLUS; 421 return NL80211_CHAN_HT40MINUS; 422 default: 423 WARN_ON(1); 424 return NL80211_CHAN_NO_HT; 425 } 426 } 427 428 /** 429 * cfg80211_chandef_create - create channel definition using channel type 430 * @chandef: the channel definition struct to fill 431 * @channel: the control channel 432 * @chantype: the channel type 433 * 434 * Given a channel type, create a channel definition. 435 */ 436 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, 437 struct ieee80211_channel *channel, 438 enum nl80211_channel_type chantype); 439 440 /** 441 * cfg80211_chandef_identical - check if two channel definitions are identical 442 * @chandef1: first channel definition 443 * @chandef2: second channel definition 444 * 445 * Return: %true if the channels defined by the channel definitions are 446 * identical, %false otherwise. 447 */ 448 static inline bool 449 cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, 450 const struct cfg80211_chan_def *chandef2) 451 { 452 return (chandef1->chan == chandef2->chan && 453 chandef1->width == chandef2->width && 454 chandef1->center_freq1 == chandef2->center_freq1 && 455 chandef1->center_freq2 == chandef2->center_freq2); 456 } 457 458 /** 459 * cfg80211_chandef_compatible - check if two channel definitions are compatible 460 * @chandef1: first channel definition 461 * @chandef2: second channel definition 462 * 463 * Return: %NULL if the given channel definitions are incompatible, 464 * chandef1 or chandef2 otherwise. 465 */ 466 const struct cfg80211_chan_def * 467 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, 468 const struct cfg80211_chan_def *chandef2); 469 470 /** 471 * cfg80211_chandef_valid - check if a channel definition is valid 472 * @chandef: the channel definition to check 473 * Return: %true if the channel definition is valid. %false otherwise. 474 */ 475 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef); 476 477 /** 478 * cfg80211_chandef_usable - check if secondary channels can be used 479 * @wiphy: the wiphy to validate against 480 * @chandef: the channel definition to check 481 * @prohibited_flags: the regulatory channel flags that must not be set 482 * Return: %true if secondary channels are usable. %false otherwise. 483 */ 484 bool cfg80211_chandef_usable(struct wiphy *wiphy, 485 const struct cfg80211_chan_def *chandef, 486 u32 prohibited_flags); 487 488 /** 489 * cfg80211_chandef_dfs_required - checks if radar detection is required 490 * @wiphy: the wiphy to validate against 491 * @chandef: the channel definition to check 492 * @iftype: the interface type as specified in &enum nl80211_iftype 493 * Returns: 494 * 1 if radar detection is required, 0 if it is not, < 0 on error 495 */ 496 int cfg80211_chandef_dfs_required(struct wiphy *wiphy, 497 const struct cfg80211_chan_def *chandef, 498 enum nl80211_iftype iftype); 499 500 /** 501 * ieee80211_chandef_rate_flags - returns rate flags for a channel 502 * 503 * In some channel types, not all rates may be used - for example CCK 504 * rates may not be used in 5/10 MHz channels. 505 * 506 * @chandef: channel definition for the channel 507 * 508 * Returns: rate flags which apply for this channel 509 */ 510 static inline enum ieee80211_rate_flags 511 ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef) 512 { 513 switch (chandef->width) { 514 case NL80211_CHAN_WIDTH_5: 515 return IEEE80211_RATE_SUPPORTS_5MHZ; 516 case NL80211_CHAN_WIDTH_10: 517 return IEEE80211_RATE_SUPPORTS_10MHZ; 518 default: 519 break; 520 } 521 return 0; 522 } 523 524 /** 525 * ieee80211_chandef_max_power - maximum transmission power for the chandef 526 * 527 * In some regulations, the transmit power may depend on the configured channel 528 * bandwidth which may be defined as dBm/MHz. This function returns the actual 529 * max_power for non-standard (20 MHz) channels. 530 * 531 * @chandef: channel definition for the channel 532 * 533 * Returns: maximum allowed transmission power in dBm for the chandef 534 */ 535 static inline int 536 ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) 537 { 538 switch (chandef->width) { 539 case NL80211_CHAN_WIDTH_5: 540 return min(chandef->chan->max_reg_power - 6, 541 chandef->chan->max_power); 542 case NL80211_CHAN_WIDTH_10: 543 return min(chandef->chan->max_reg_power - 3, 544 chandef->chan->max_power); 545 default: 546 break; 547 } 548 return chandef->chan->max_power; 549 } 550 551 /** 552 * enum survey_info_flags - survey information flags 553 * 554 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 555 * @SURVEY_INFO_IN_USE: channel is currently being used 556 * @SURVEY_INFO_TIME: active time (in ms) was filled in 557 * @SURVEY_INFO_TIME_BUSY: busy time was filled in 558 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in 559 * @SURVEY_INFO_TIME_RX: receive time was filled in 560 * @SURVEY_INFO_TIME_TX: transmit time was filled in 561 * @SURVEY_INFO_TIME_SCAN: scan time was filled in 562 * 563 * Used by the driver to indicate which info in &struct survey_info 564 * it has filled in during the get_survey(). 565 */ 566 enum survey_info_flags { 567 SURVEY_INFO_NOISE_DBM = BIT(0), 568 SURVEY_INFO_IN_USE = BIT(1), 569 SURVEY_INFO_TIME = BIT(2), 570 SURVEY_INFO_TIME_BUSY = BIT(3), 571 SURVEY_INFO_TIME_EXT_BUSY = BIT(4), 572 SURVEY_INFO_TIME_RX = BIT(5), 573 SURVEY_INFO_TIME_TX = BIT(6), 574 SURVEY_INFO_TIME_SCAN = BIT(7), 575 }; 576 577 /** 578 * struct survey_info - channel survey response 579 * 580 * @channel: the channel this survey record reports, may be %NULL for a single 581 * record to report global statistics 582 * @filled: bitflag of flags from &enum survey_info_flags 583 * @noise: channel noise in dBm. This and all following fields are 584 * optional 585 * @time: amount of time in ms the radio was turn on (on the channel) 586 * @time_busy: amount of time the primary channel was sensed busy 587 * @time_ext_busy: amount of time the extension channel was sensed busy 588 * @time_rx: amount of time the radio spent receiving data 589 * @time_tx: amount of time the radio spent transmitting data 590 * @time_scan: amount of time the radio spent for scanning 591 * 592 * Used by dump_survey() to report back per-channel survey information. 593 * 594 * This structure can later be expanded with things like 595 * channel duty cycle etc. 596 */ 597 struct survey_info { 598 struct ieee80211_channel *channel; 599 u64 time; 600 u64 time_busy; 601 u64 time_ext_busy; 602 u64 time_rx; 603 u64 time_tx; 604 u64 time_scan; 605 u32 filled; 606 s8 noise; 607 }; 608 609 /** 610 * struct cfg80211_crypto_settings - Crypto settings 611 * @wpa_versions: indicates which, if any, WPA versions are enabled 612 * (from enum nl80211_wpa_versions) 613 * @cipher_group: group key cipher suite (or 0 if unset) 614 * @n_ciphers_pairwise: number of AP supported unicast ciphers 615 * @ciphers_pairwise: unicast key cipher suites 616 * @n_akm_suites: number of AKM suites 617 * @akm_suites: AKM suites 618 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 619 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 620 * required to assume that the port is unauthorized until authorized by 621 * user space. Otherwise, port is marked authorized by default. 622 * @control_port_ethertype: the control port protocol that should be 623 * allowed through even on unauthorized ports 624 * @control_port_no_encrypt: TRUE to prevent encryption of control port 625 * protocol frames. 626 */ 627 struct cfg80211_crypto_settings { 628 u32 wpa_versions; 629 u32 cipher_group; 630 int n_ciphers_pairwise; 631 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 632 int n_akm_suites; 633 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 634 bool control_port; 635 __be16 control_port_ethertype; 636 bool control_port_no_encrypt; 637 }; 638 639 /** 640 * struct cfg80211_beacon_data - beacon data 641 * @head: head portion of beacon (before TIM IE) 642 * or %NULL if not changed 643 * @tail: tail portion of beacon (after TIM IE) 644 * or %NULL if not changed 645 * @head_len: length of @head 646 * @tail_len: length of @tail 647 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 648 * @beacon_ies_len: length of beacon_ies in octets 649 * @proberesp_ies: extra information element(s) to add into Probe Response 650 * frames or %NULL 651 * @proberesp_ies_len: length of proberesp_ies in octets 652 * @assocresp_ies: extra information element(s) to add into (Re)Association 653 * Response frames or %NULL 654 * @assocresp_ies_len: length of assocresp_ies in octets 655 * @probe_resp_len: length of probe response template (@probe_resp) 656 * @probe_resp: probe response template (AP mode only) 657 */ 658 struct cfg80211_beacon_data { 659 const u8 *head, *tail; 660 const u8 *beacon_ies; 661 const u8 *proberesp_ies; 662 const u8 *assocresp_ies; 663 const u8 *probe_resp; 664 665 size_t head_len, tail_len; 666 size_t beacon_ies_len; 667 size_t proberesp_ies_len; 668 size_t assocresp_ies_len; 669 size_t probe_resp_len; 670 }; 671 672 struct mac_address { 673 u8 addr[ETH_ALEN]; 674 }; 675 676 /** 677 * struct cfg80211_acl_data - Access control list data 678 * 679 * @acl_policy: ACL policy to be applied on the station's 680 * entry specified by mac_addr 681 * @n_acl_entries: Number of MAC address entries passed 682 * @mac_addrs: List of MAC addresses of stations to be used for ACL 683 */ 684 struct cfg80211_acl_data { 685 enum nl80211_acl_policy acl_policy; 686 int n_acl_entries; 687 688 /* Keep it last */ 689 struct mac_address mac_addrs[]; 690 }; 691 692 /** 693 * struct cfg80211_ap_settings - AP configuration 694 * 695 * Used to configure an AP interface. 696 * 697 * @chandef: defines the channel to use 698 * @beacon: beacon data 699 * @beacon_interval: beacon interval 700 * @dtim_period: DTIM period 701 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 702 * user space) 703 * @ssid_len: length of @ssid 704 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 705 * @crypto: crypto settings 706 * @privacy: the BSS uses privacy 707 * @auth_type: Authentication type (algorithm) 708 * @smps_mode: SMPS mode 709 * @inactivity_timeout: time in seconds to determine station's inactivity. 710 * @p2p_ctwindow: P2P CT Window 711 * @p2p_opp_ps: P2P opportunistic PS 712 * @acl: ACL configuration used by the drivers which has support for 713 * MAC address based access control 714 */ 715 struct cfg80211_ap_settings { 716 struct cfg80211_chan_def chandef; 717 718 struct cfg80211_beacon_data beacon; 719 720 int beacon_interval, dtim_period; 721 const u8 *ssid; 722 size_t ssid_len; 723 enum nl80211_hidden_ssid hidden_ssid; 724 struct cfg80211_crypto_settings crypto; 725 bool privacy; 726 enum nl80211_auth_type auth_type; 727 enum nl80211_smps_mode smps_mode; 728 int inactivity_timeout; 729 u8 p2p_ctwindow; 730 bool p2p_opp_ps; 731 const struct cfg80211_acl_data *acl; 732 }; 733 734 /** 735 * struct cfg80211_csa_settings - channel switch settings 736 * 737 * Used for channel switch 738 * 739 * @chandef: defines the channel to use after the switch 740 * @beacon_csa: beacon data while performing the switch 741 * @counter_offsets_beacon: offsets of the counters within the beacon (tail) 742 * @counter_offsets_presp: offsets of the counters within the probe response 743 * @n_counter_offsets_beacon: number of csa counters the beacon (tail) 744 * @n_counter_offsets_presp: number of csa counters in the probe response 745 * @beacon_after: beacon data to be used on the new channel 746 * @radar_required: whether radar detection is required on the new channel 747 * @block_tx: whether transmissions should be blocked while changing 748 * @count: number of beacons until switch 749 */ 750 struct cfg80211_csa_settings { 751 struct cfg80211_chan_def chandef; 752 struct cfg80211_beacon_data beacon_csa; 753 const u16 *counter_offsets_beacon; 754 const u16 *counter_offsets_presp; 755 unsigned int n_counter_offsets_beacon; 756 unsigned int n_counter_offsets_presp; 757 struct cfg80211_beacon_data beacon_after; 758 bool radar_required; 759 bool block_tx; 760 u8 count; 761 }; 762 763 /** 764 * enum station_parameters_apply_mask - station parameter values to apply 765 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 766 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability 767 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state 768 * 769 * Not all station parameters have in-band "no change" signalling, 770 * for those that don't these flags will are used. 771 */ 772 enum station_parameters_apply_mask { 773 STATION_PARAM_APPLY_UAPSD = BIT(0), 774 STATION_PARAM_APPLY_CAPABILITY = BIT(1), 775 STATION_PARAM_APPLY_PLINK_STATE = BIT(2), 776 }; 777 778 /** 779 * struct station_parameters - station parameters 780 * 781 * Used to change and create a new station. 782 * 783 * @vlan: vlan interface station should belong to 784 * @supported_rates: supported rates in IEEE 802.11 format 785 * (or NULL for no change) 786 * @supported_rates_len: number of supported rates 787 * @sta_flags_mask: station flags that changed 788 * (bitmask of BIT(NL80211_STA_FLAG_...)) 789 * @sta_flags_set: station flags values 790 * (bitmask of BIT(NL80211_STA_FLAG_...)) 791 * @listen_interval: listen interval or -1 for no change 792 * @aid: AID or zero for no change 793 * @plink_action: plink action to take 794 * @plink_state: set the peer link state for a station 795 * @ht_capa: HT capabilities of station 796 * @vht_capa: VHT capabilities of station 797 * @uapsd_queues: bitmap of queues configured for uapsd. same format 798 * as the AC bitmap in the QoS info field 799 * @max_sp: max Service Period. same format as the MAX_SP in the 800 * QoS info field (but already shifted down) 801 * @sta_modify_mask: bitmap indicating which parameters changed 802 * (for those that don't have a natural "no change" value), 803 * see &enum station_parameters_apply_mask 804 * @local_pm: local link-specific mesh power save mode (no change when set 805 * to unknown) 806 * @capability: station capability 807 * @ext_capab: extended capabilities of the station 808 * @ext_capab_len: number of extended capabilities 809 * @supported_channels: supported channels in IEEE 802.11 format 810 * @supported_channels_len: number of supported channels 811 * @supported_oper_classes: supported oper classes in IEEE 802.11 format 812 * @supported_oper_classes_len: number of supported operating classes 813 * @opmode_notif: operating mode field from Operating Mode Notification 814 * @opmode_notif_used: information if operating mode field is used 815 */ 816 struct station_parameters { 817 const u8 *supported_rates; 818 struct net_device *vlan; 819 u32 sta_flags_mask, sta_flags_set; 820 u32 sta_modify_mask; 821 int listen_interval; 822 u16 aid; 823 u8 supported_rates_len; 824 u8 plink_action; 825 u8 plink_state; 826 const struct ieee80211_ht_cap *ht_capa; 827 const struct ieee80211_vht_cap *vht_capa; 828 u8 uapsd_queues; 829 u8 max_sp; 830 enum nl80211_mesh_power_mode local_pm; 831 u16 capability; 832 const u8 *ext_capab; 833 u8 ext_capab_len; 834 const u8 *supported_channels; 835 u8 supported_channels_len; 836 const u8 *supported_oper_classes; 837 u8 supported_oper_classes_len; 838 u8 opmode_notif; 839 bool opmode_notif_used; 840 }; 841 842 /** 843 * struct station_del_parameters - station deletion parameters 844 * 845 * Used to delete a station entry (or all stations). 846 * 847 * @mac: MAC address of the station to remove or NULL to remove all stations 848 * @subtype: Management frame subtype to use for indicating removal 849 * (10 = Disassociation, 12 = Deauthentication) 850 * @reason_code: Reason code for the Disassociation/Deauthentication frame 851 */ 852 struct station_del_parameters { 853 const u8 *mac; 854 u8 subtype; 855 u16 reason_code; 856 }; 857 858 /** 859 * enum cfg80211_station_type - the type of station being modified 860 * @CFG80211_STA_AP_CLIENT: client of an AP interface 861 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has 862 * the AP MLME in the device 863 * @CFG80211_STA_AP_STA: AP station on managed interface 864 * @CFG80211_STA_IBSS: IBSS station 865 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry 866 * while TDLS setup is in progress, it moves out of this state when 867 * being marked authorized; use this only if TDLS with external setup is 868 * supported/used) 869 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active 870 * entry that is operating, has been marked authorized by userspace) 871 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed) 872 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed) 873 */ 874 enum cfg80211_station_type { 875 CFG80211_STA_AP_CLIENT, 876 CFG80211_STA_AP_MLME_CLIENT, 877 CFG80211_STA_AP_STA, 878 CFG80211_STA_IBSS, 879 CFG80211_STA_TDLS_PEER_SETUP, 880 CFG80211_STA_TDLS_PEER_ACTIVE, 881 CFG80211_STA_MESH_PEER_KERNEL, 882 CFG80211_STA_MESH_PEER_USER, 883 }; 884 885 /** 886 * cfg80211_check_station_change - validate parameter changes 887 * @wiphy: the wiphy this operates on 888 * @params: the new parameters for a station 889 * @statype: the type of station being modified 890 * 891 * Utility function for the @change_station driver method. Call this function 892 * with the appropriate station type looking up the station (and checking that 893 * it exists). It will verify whether the station change is acceptable, and if 894 * not will return an error code. Note that it may modify the parameters for 895 * backward compatibility reasons, so don't use them before calling this. 896 */ 897 int cfg80211_check_station_change(struct wiphy *wiphy, 898 struct station_parameters *params, 899 enum cfg80211_station_type statype); 900 901 /** 902 * enum station_info_rate_flags - bitrate info flags 903 * 904 * Used by the driver to indicate the specific rate transmission 905 * type for 802.11n transmissions. 906 * 907 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS 908 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS 909 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 910 * @RATE_INFO_FLAGS_60G: 60GHz MCS 911 */ 912 enum rate_info_flags { 913 RATE_INFO_FLAGS_MCS = BIT(0), 914 RATE_INFO_FLAGS_VHT_MCS = BIT(1), 915 RATE_INFO_FLAGS_SHORT_GI = BIT(2), 916 RATE_INFO_FLAGS_60G = BIT(3), 917 }; 918 919 /** 920 * enum rate_info_bw - rate bandwidth information 921 * 922 * Used by the driver to indicate the rate bandwidth. 923 * 924 * @RATE_INFO_BW_5: 5 MHz bandwidth 925 * @RATE_INFO_BW_10: 10 MHz bandwidth 926 * @RATE_INFO_BW_20: 20 MHz bandwidth 927 * @RATE_INFO_BW_40: 40 MHz bandwidth 928 * @RATE_INFO_BW_80: 80 MHz bandwidth 929 * @RATE_INFO_BW_160: 160 MHz bandwidth 930 */ 931 enum rate_info_bw { 932 RATE_INFO_BW_5, 933 RATE_INFO_BW_10, 934 RATE_INFO_BW_20, 935 RATE_INFO_BW_40, 936 RATE_INFO_BW_80, 937 RATE_INFO_BW_160, 938 }; 939 940 /** 941 * struct rate_info - bitrate information 942 * 943 * Information about a receiving or transmitting bitrate 944 * 945 * @flags: bitflag of flags from &enum rate_info_flags 946 * @mcs: mcs index if struct describes a 802.11n bitrate 947 * @legacy: bitrate in 100kbit/s for 802.11abg 948 * @nss: number of streams (VHT only) 949 * @bw: bandwidth (from &enum rate_info_bw) 950 */ 951 struct rate_info { 952 u8 flags; 953 u8 mcs; 954 u16 legacy; 955 u8 nss; 956 u8 bw; 957 }; 958 959 /** 960 * enum station_info_rate_flags - bitrate info flags 961 * 962 * Used by the driver to indicate the specific rate transmission 963 * type for 802.11n transmissions. 964 * 965 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 966 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 967 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 968 */ 969 enum bss_param_flags { 970 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 971 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 972 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 973 }; 974 975 /** 976 * struct sta_bss_parameters - BSS parameters for the attached station 977 * 978 * Information about the currently associated BSS 979 * 980 * @flags: bitflag of flags from &enum bss_param_flags 981 * @dtim_period: DTIM period for the BSS 982 * @beacon_interval: beacon interval 983 */ 984 struct sta_bss_parameters { 985 u8 flags; 986 u8 dtim_period; 987 u16 beacon_interval; 988 }; 989 990 /** 991 * struct cfg80211_tid_stats - per-TID statistics 992 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to 993 * indicate the relevant values in this struct are filled 994 * @rx_msdu: number of received MSDUs 995 * @tx_msdu: number of (attempted) transmitted MSDUs 996 * @tx_msdu_retries: number of retries (not counting the first) for 997 * transmitted MSDUs 998 * @tx_msdu_failed: number of failed transmitted MSDUs 999 */ 1000 struct cfg80211_tid_stats { 1001 u32 filled; 1002 u64 rx_msdu; 1003 u64 tx_msdu; 1004 u64 tx_msdu_retries; 1005 u64 tx_msdu_failed; 1006 }; 1007 1008 #define IEEE80211_MAX_CHAINS 4 1009 1010 /** 1011 * struct station_info - station information 1012 * 1013 * Station information filled by driver for get_station() and dump_station. 1014 * 1015 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to 1016 * indicate the relevant values in this struct for them 1017 * @connected_time: time(in secs) since a station is last connected 1018 * @inactive_time: time since last station activity (tx/rx) in milliseconds 1019 * @rx_bytes: bytes (size of MPDUs) received from this station 1020 * @tx_bytes: bytes (size of MPDUs) transmitted to this station 1021 * @llid: mesh local link id 1022 * @plid: mesh peer link id 1023 * @plink_state: mesh peer link state 1024 * @signal: The signal strength, type depends on the wiphy's signal_type. 1025 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1026 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type. 1027 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1028 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg 1029 * @chain_signal: per-chain signal strength of last received packet in dBm 1030 * @chain_signal_avg: per-chain signal strength average in dBm 1031 * @txrate: current unicast bitrate from this station 1032 * @rxrate: current unicast bitrate to this station 1033 * @rx_packets: packets (MSDUs & MMPDUs) received from this station 1034 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station 1035 * @tx_retries: cumulative retry counts (MPDUs) 1036 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK) 1037 * @rx_dropped_misc: Dropped for un-specified reason. 1038 * @bss_param: current BSS parameters 1039 * @generation: generation number for nl80211 dumps. 1040 * This number should increase every time the list of stations 1041 * changes, i.e. when a station is added or removed, so that 1042 * userspace can tell whether it got a consistent snapshot. 1043 * @assoc_req_ies: IEs from (Re)Association Request. 1044 * This is used only when in AP mode with drivers that do not use 1045 * user space MLME/SME implementation. The information is provided for 1046 * the cfg80211_new_sta() calls to notify user space of the IEs. 1047 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 1048 * @sta_flags: station flags mask & values 1049 * @beacon_loss_count: Number of times beacon loss event has triggered. 1050 * @t_offset: Time offset of the station relative to this host. 1051 * @local_pm: local mesh STA power save mode 1052 * @peer_pm: peer mesh STA power save mode 1053 * @nonpeer_pm: non-peer mesh STA power save mode 1054 * @expected_throughput: expected throughput in kbps (including 802.11 headers) 1055 * towards this station. 1056 * @rx_beacon: number of beacons received from this peer 1057 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received 1058 * from this peer 1059 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last 1060 * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. 1061 */ 1062 struct station_info { 1063 u32 filled; 1064 u32 connected_time; 1065 u32 inactive_time; 1066 u64 rx_bytes; 1067 u64 tx_bytes; 1068 u16 llid; 1069 u16 plid; 1070 u8 plink_state; 1071 s8 signal; 1072 s8 signal_avg; 1073 1074 u8 chains; 1075 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1076 s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; 1077 1078 struct rate_info txrate; 1079 struct rate_info rxrate; 1080 u32 rx_packets; 1081 u32 tx_packets; 1082 u32 tx_retries; 1083 u32 tx_failed; 1084 u32 rx_dropped_misc; 1085 struct sta_bss_parameters bss_param; 1086 struct nl80211_sta_flag_update sta_flags; 1087 1088 int generation; 1089 1090 const u8 *assoc_req_ies; 1091 size_t assoc_req_ies_len; 1092 1093 u32 beacon_loss_count; 1094 s64 t_offset; 1095 enum nl80211_mesh_power_mode local_pm; 1096 enum nl80211_mesh_power_mode peer_pm; 1097 enum nl80211_mesh_power_mode nonpeer_pm; 1098 1099 u32 expected_throughput; 1100 1101 u64 rx_beacon; 1102 u8 rx_beacon_signal_avg; 1103 struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1]; 1104 }; 1105 1106 /** 1107 * cfg80211_get_station - retrieve information about a given station 1108 * @dev: the device where the station is supposed to be connected to 1109 * @mac_addr: the mac address of the station of interest 1110 * @sinfo: pointer to the structure to fill with the information 1111 * 1112 * Returns 0 on success and sinfo is filled with the available information 1113 * otherwise returns a negative error code and the content of sinfo has to be 1114 * considered undefined. 1115 */ 1116 int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, 1117 struct station_info *sinfo); 1118 1119 /** 1120 * enum monitor_flags - monitor flags 1121 * 1122 * Monitor interface configuration flags. Note that these must be the bits 1123 * according to the nl80211 flags. 1124 * 1125 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 1126 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 1127 * @MONITOR_FLAG_CONTROL: pass control frames 1128 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 1129 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 1130 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address 1131 */ 1132 enum monitor_flags { 1133 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 1134 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 1135 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 1136 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 1137 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 1138 MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE, 1139 }; 1140 1141 /** 1142 * enum mpath_info_flags - mesh path information flags 1143 * 1144 * Used by the driver to indicate which info in &struct mpath_info it has filled 1145 * in during get_station() or dump_station(). 1146 * 1147 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 1148 * @MPATH_INFO_SN: @sn filled 1149 * @MPATH_INFO_METRIC: @metric filled 1150 * @MPATH_INFO_EXPTIME: @exptime filled 1151 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 1152 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 1153 * @MPATH_INFO_FLAGS: @flags filled 1154 */ 1155 enum mpath_info_flags { 1156 MPATH_INFO_FRAME_QLEN = BIT(0), 1157 MPATH_INFO_SN = BIT(1), 1158 MPATH_INFO_METRIC = BIT(2), 1159 MPATH_INFO_EXPTIME = BIT(3), 1160 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 1161 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 1162 MPATH_INFO_FLAGS = BIT(6), 1163 }; 1164 1165 /** 1166 * struct mpath_info - mesh path information 1167 * 1168 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 1169 * 1170 * @filled: bitfield of flags from &enum mpath_info_flags 1171 * @frame_qlen: number of queued frames for this destination 1172 * @sn: target sequence number 1173 * @metric: metric (cost) of this mesh path 1174 * @exptime: expiration time for the mesh path from now, in msecs 1175 * @flags: mesh path flags 1176 * @discovery_timeout: total mesh path discovery timeout, in msecs 1177 * @discovery_retries: mesh path discovery retries 1178 * @generation: generation number for nl80211 dumps. 1179 * This number should increase every time the list of mesh paths 1180 * changes, i.e. when a station is added or removed, so that 1181 * userspace can tell whether it got a consistent snapshot. 1182 */ 1183 struct mpath_info { 1184 u32 filled; 1185 u32 frame_qlen; 1186 u32 sn; 1187 u32 metric; 1188 u32 exptime; 1189 u32 discovery_timeout; 1190 u8 discovery_retries; 1191 u8 flags; 1192 1193 int generation; 1194 }; 1195 1196 /** 1197 * struct bss_parameters - BSS parameters 1198 * 1199 * Used to change BSS parameters (mainly for AP mode). 1200 * 1201 * @use_cts_prot: Whether to use CTS protection 1202 * (0 = no, 1 = yes, -1 = do not change) 1203 * @use_short_preamble: Whether the use of short preambles is allowed 1204 * (0 = no, 1 = yes, -1 = do not change) 1205 * @use_short_slot_time: Whether the use of short slot time is allowed 1206 * (0 = no, 1 = yes, -1 = do not change) 1207 * @basic_rates: basic rates in IEEE 802.11 format 1208 * (or NULL for no change) 1209 * @basic_rates_len: number of basic rates 1210 * @ap_isolate: do not forward packets between connected stations 1211 * @ht_opmode: HT Operation mode 1212 * (u16 = opmode, -1 = do not change) 1213 * @p2p_ctwindow: P2P CT Window (-1 = no change) 1214 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change) 1215 */ 1216 struct bss_parameters { 1217 int use_cts_prot; 1218 int use_short_preamble; 1219 int use_short_slot_time; 1220 const u8 *basic_rates; 1221 u8 basic_rates_len; 1222 int ap_isolate; 1223 int ht_opmode; 1224 s8 p2p_ctwindow, p2p_opp_ps; 1225 }; 1226 1227 /** 1228 * struct mesh_config - 802.11s mesh configuration 1229 * 1230 * These parameters can be changed while the mesh is active. 1231 * 1232 * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used 1233 * by the Mesh Peering Open message 1234 * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units 1235 * used by the Mesh Peering Open message 1236 * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by 1237 * the mesh peering management to close a mesh peering 1238 * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this 1239 * mesh interface 1240 * @dot11MeshMaxRetries: the maximum number of peer link open retries that can 1241 * be sent to establish a new peer link instance in a mesh 1242 * @dot11MeshTTL: the value of TTL field set at a source mesh STA 1243 * @element_ttl: the value of TTL field set at a mesh STA for path selection 1244 * elements 1245 * @auto_open_plinks: whether we should automatically open peer links when we 1246 * detect compatible mesh peers 1247 * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to 1248 * synchronize to for 11s default synchronization method 1249 * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ 1250 * that an originator mesh STA can send to a particular path target 1251 * @path_refresh_time: how frequently to refresh mesh paths in milliseconds 1252 * @min_discovery_timeout: the minimum length of time to wait until giving up on 1253 * a path discovery in milliseconds 1254 * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs 1255 * receiving a PREQ shall consider the forwarding information from the 1256 * root to be valid. (TU = time unit) 1257 * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during 1258 * which a mesh STA can send only one action frame containing a PREQ 1259 * element 1260 * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during 1261 * which a mesh STA can send only one Action frame containing a PERR 1262 * element 1263 * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that 1264 * it takes for an HWMP information element to propagate across the mesh 1265 * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA 1266 * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root 1267 * announcements are transmitted 1268 * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh 1269 * station has access to a broader network beyond the MBSS. (This is 1270 * missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true 1271 * only means that the station will announce others it's a mesh gate, but 1272 * not necessarily using the gate announcement protocol. Still keeping the 1273 * same nomenclature to be in sync with the spec) 1274 * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding 1275 * entity (default is TRUE - forwarding entity) 1276 * @rssi_threshold: the threshold for average signal strength of candidate 1277 * station to establish a peer link 1278 * @ht_opmode: mesh HT protection mode 1279 * 1280 * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs 1281 * receiving a proactive PREQ shall consider the forwarding information to 1282 * the root mesh STA to be valid. 1283 * 1284 * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive 1285 * PREQs are transmitted. 1286 * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs) 1287 * during which a mesh STA can send only one Action frame containing 1288 * a PREQ element for root path confirmation. 1289 * @power_mode: The default mesh power save mode which will be the initial 1290 * setting for new peer links. 1291 * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake 1292 * after transmitting its beacon. 1293 * @plink_timeout: If no tx activity is seen from a STA we've established 1294 * peering with for longer than this time (in seconds), then remove it 1295 * from the STA's list of peers. Default is 30 minutes. 1296 */ 1297 struct mesh_config { 1298 u16 dot11MeshRetryTimeout; 1299 u16 dot11MeshConfirmTimeout; 1300 u16 dot11MeshHoldingTimeout; 1301 u16 dot11MeshMaxPeerLinks; 1302 u8 dot11MeshMaxRetries; 1303 u8 dot11MeshTTL; 1304 u8 element_ttl; 1305 bool auto_open_plinks; 1306 u32 dot11MeshNbrOffsetMaxNeighbor; 1307 u8 dot11MeshHWMPmaxPREQretries; 1308 u32 path_refresh_time; 1309 u16 min_discovery_timeout; 1310 u32 dot11MeshHWMPactivePathTimeout; 1311 u16 dot11MeshHWMPpreqMinInterval; 1312 u16 dot11MeshHWMPperrMinInterval; 1313 u16 dot11MeshHWMPnetDiameterTraversalTime; 1314 u8 dot11MeshHWMPRootMode; 1315 u16 dot11MeshHWMPRannInterval; 1316 bool dot11MeshGateAnnouncementProtocol; 1317 bool dot11MeshForwarding; 1318 s32 rssi_threshold; 1319 u16 ht_opmode; 1320 u32 dot11MeshHWMPactivePathToRootTimeout; 1321 u16 dot11MeshHWMProotInterval; 1322 u16 dot11MeshHWMPconfirmationInterval; 1323 enum nl80211_mesh_power_mode power_mode; 1324 u16 dot11MeshAwakeWindowDuration; 1325 u32 plink_timeout; 1326 }; 1327 1328 /** 1329 * struct mesh_setup - 802.11s mesh setup configuration 1330 * @chandef: defines the channel to use 1331 * @mesh_id: the mesh ID 1332 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 1333 * @sync_method: which synchronization method to use 1334 * @path_sel_proto: which path selection protocol to use 1335 * @path_metric: which metric to use 1336 * @auth_id: which authentication method this mesh is using 1337 * @ie: vendor information elements (optional) 1338 * @ie_len: length of vendor information elements 1339 * @is_authenticated: this mesh requires authentication 1340 * @is_secure: this mesh uses security 1341 * @user_mpm: userspace handles all MPM functions 1342 * @dtim_period: DTIM period to use 1343 * @beacon_interval: beacon interval to use 1344 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 1345 * @basic_rates: basic rates to use when creating the mesh 1346 * 1347 * These parameters are fixed when the mesh is created. 1348 */ 1349 struct mesh_setup { 1350 struct cfg80211_chan_def chandef; 1351 const u8 *mesh_id; 1352 u8 mesh_id_len; 1353 u8 sync_method; 1354 u8 path_sel_proto; 1355 u8 path_metric; 1356 u8 auth_id; 1357 const u8 *ie; 1358 u8 ie_len; 1359 bool is_authenticated; 1360 bool is_secure; 1361 bool user_mpm; 1362 u8 dtim_period; 1363 u16 beacon_interval; 1364 int mcast_rate[IEEE80211_NUM_BANDS]; 1365 u32 basic_rates; 1366 }; 1367 1368 /** 1369 * struct ocb_setup - 802.11p OCB mode setup configuration 1370 * @chandef: defines the channel to use 1371 * 1372 * These parameters are fixed when connecting to the network 1373 */ 1374 struct ocb_setup { 1375 struct cfg80211_chan_def chandef; 1376 }; 1377 1378 /** 1379 * struct ieee80211_txq_params - TX queue parameters 1380 * @ac: AC identifier 1381 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 1382 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 1383 * 1..32767] 1384 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 1385 * 1..32767] 1386 * @aifs: Arbitration interframe space [0..255] 1387 */ 1388 struct ieee80211_txq_params { 1389 enum nl80211_ac ac; 1390 u16 txop; 1391 u16 cwmin; 1392 u16 cwmax; 1393 u8 aifs; 1394 }; 1395 1396 /** 1397 * DOC: Scanning and BSS list handling 1398 * 1399 * The scanning process itself is fairly simple, but cfg80211 offers quite 1400 * a bit of helper functionality. To start a scan, the scan operation will 1401 * be invoked with a scan definition. This scan definition contains the 1402 * channels to scan, and the SSIDs to send probe requests for (including the 1403 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 1404 * probe. Additionally, a scan request may contain extra information elements 1405 * that should be added to the probe request. The IEs are guaranteed to be 1406 * well-formed, and will not exceed the maximum length the driver advertised 1407 * in the wiphy structure. 1408 * 1409 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 1410 * it is responsible for maintaining the BSS list; the driver should not 1411 * maintain a list itself. For this notification, various functions exist. 1412 * 1413 * Since drivers do not maintain a BSS list, there are also a number of 1414 * functions to search for a BSS and obtain information about it from the 1415 * BSS structure cfg80211 maintains. The BSS list is also made available 1416 * to userspace. 1417 */ 1418 1419 /** 1420 * struct cfg80211_ssid - SSID description 1421 * @ssid: the SSID 1422 * @ssid_len: length of the ssid 1423 */ 1424 struct cfg80211_ssid { 1425 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1426 u8 ssid_len; 1427 }; 1428 1429 /** 1430 * struct cfg80211_scan_request - scan request description 1431 * 1432 * @ssids: SSIDs to scan for (active scan only) 1433 * @n_ssids: number of SSIDs 1434 * @channels: channels to scan on. 1435 * @n_channels: total number of channels to scan 1436 * @scan_width: channel width for scanning 1437 * @ie: optional information element(s) to add into Probe Request or %NULL 1438 * @ie_len: length of ie in octets 1439 * @flags: bit field of flags controlling operation 1440 * @rates: bitmap of rates to advertise for each band 1441 * @wiphy: the wiphy this was for 1442 * @scan_start: time (in jiffies) when the scan started 1443 * @wdev: the wireless device to scan for 1444 * @aborted: (internal) scan request was notified as aborted 1445 * @notified: (internal) scan request was notified as done or aborted 1446 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 1447 * @mac_addr: MAC address used with randomisation 1448 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1449 * are 0 in the mask should be randomised, bits that are 1 should 1450 * be taken from the @mac_addr 1451 */ 1452 struct cfg80211_scan_request { 1453 struct cfg80211_ssid *ssids; 1454 int n_ssids; 1455 u32 n_channels; 1456 enum nl80211_bss_scan_width scan_width; 1457 const u8 *ie; 1458 size_t ie_len; 1459 u32 flags; 1460 1461 u32 rates[IEEE80211_NUM_BANDS]; 1462 1463 struct wireless_dev *wdev; 1464 1465 u8 mac_addr[ETH_ALEN] __aligned(2); 1466 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1467 1468 /* internal */ 1469 struct wiphy *wiphy; 1470 unsigned long scan_start; 1471 bool aborted, notified; 1472 bool no_cck; 1473 1474 /* keep last */ 1475 struct ieee80211_channel *channels[0]; 1476 }; 1477 1478 static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask) 1479 { 1480 int i; 1481 1482 get_random_bytes(buf, ETH_ALEN); 1483 for (i = 0; i < ETH_ALEN; i++) { 1484 buf[i] &= ~mask[i]; 1485 buf[i] |= addr[i] & mask[i]; 1486 } 1487 } 1488 1489 /** 1490 * struct cfg80211_match_set - sets of attributes to match 1491 * 1492 * @ssid: SSID to be matched; may be zero-length for no match (RSSI only) 1493 * @rssi_thold: don't report scan results below this threshold (in s32 dBm) 1494 */ 1495 struct cfg80211_match_set { 1496 struct cfg80211_ssid ssid; 1497 s32 rssi_thold; 1498 }; 1499 1500 /** 1501 * struct cfg80211_sched_scan_request - scheduled scan request description 1502 * 1503 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 1504 * @n_ssids: number of SSIDs 1505 * @n_channels: total number of channels to scan 1506 * @scan_width: channel width for scanning 1507 * @interval: interval between each scheduled scan cycle 1508 * @ie: optional information element(s) to add into Probe Request or %NULL 1509 * @ie_len: length of ie in octets 1510 * @flags: bit field of flags controlling operation 1511 * @match_sets: sets of parameters to be matched for a scan result 1512 * entry to be considered valid and to be passed to the host 1513 * (others are filtered out). 1514 * If ommited, all results are passed. 1515 * @n_match_sets: number of match sets 1516 * @wiphy: the wiphy this was for 1517 * @dev: the interface 1518 * @scan_start: start time of the scheduled scan 1519 * @channels: channels to scan 1520 * @min_rssi_thold: for drivers only supporting a single threshold, this 1521 * contains the minimum over all matchsets 1522 * @mac_addr: MAC address used with randomisation 1523 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1524 * are 0 in the mask should be randomised, bits that are 1 should 1525 * be taken from the @mac_addr 1526 * @rcu_head: RCU callback used to free the struct 1527 * @owner_nlportid: netlink portid of owner (if this should is a request 1528 * owned by a particular socket) 1529 * @delay: delay in seconds to use before starting the first scan 1530 * cycle. The driver may ignore this parameter and start 1531 * immediately (or at any other time), if this feature is not 1532 * supported. 1533 */ 1534 struct cfg80211_sched_scan_request { 1535 struct cfg80211_ssid *ssids; 1536 int n_ssids; 1537 u32 n_channels; 1538 enum nl80211_bss_scan_width scan_width; 1539 u32 interval; 1540 const u8 *ie; 1541 size_t ie_len; 1542 u32 flags; 1543 struct cfg80211_match_set *match_sets; 1544 int n_match_sets; 1545 s32 min_rssi_thold; 1546 u32 delay; 1547 1548 u8 mac_addr[ETH_ALEN] __aligned(2); 1549 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1550 1551 /* internal */ 1552 struct wiphy *wiphy; 1553 struct net_device *dev; 1554 unsigned long scan_start; 1555 struct rcu_head rcu_head; 1556 u32 owner_nlportid; 1557 1558 /* keep last */ 1559 struct ieee80211_channel *channels[0]; 1560 }; 1561 1562 /** 1563 * enum cfg80211_signal_type - signal type 1564 * 1565 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 1566 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 1567 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 1568 */ 1569 enum cfg80211_signal_type { 1570 CFG80211_SIGNAL_TYPE_NONE, 1571 CFG80211_SIGNAL_TYPE_MBM, 1572 CFG80211_SIGNAL_TYPE_UNSPEC, 1573 }; 1574 1575 /** 1576 * struct cfg80211_bss_ie_data - BSS entry IE data 1577 * @tsf: TSF contained in the frame that carried these IEs 1578 * @rcu_head: internal use, for freeing 1579 * @len: length of the IEs 1580 * @from_beacon: these IEs are known to come from a beacon 1581 * @data: IE data 1582 */ 1583 struct cfg80211_bss_ies { 1584 u64 tsf; 1585 struct rcu_head rcu_head; 1586 int len; 1587 bool from_beacon; 1588 u8 data[]; 1589 }; 1590 1591 /** 1592 * struct cfg80211_bss - BSS description 1593 * 1594 * This structure describes a BSS (which may also be a mesh network) 1595 * for use in scan results and similar. 1596 * 1597 * @channel: channel this BSS is on 1598 * @scan_width: width of the control channel 1599 * @bssid: BSSID of the BSS 1600 * @beacon_interval: the beacon interval as from the frame 1601 * @capability: the capability field in host byte order 1602 * @ies: the information elements (Note that there is no guarantee that these 1603 * are well-formed!); this is a pointer to either the beacon_ies or 1604 * proberesp_ies depending on whether Probe Response frame has been 1605 * received. It is always non-%NULL. 1606 * @beacon_ies: the information elements from the last Beacon frame 1607 * (implementation note: if @hidden_beacon_bss is set this struct doesn't 1608 * own the beacon_ies, but they're just pointers to the ones from the 1609 * @hidden_beacon_bss struct) 1610 * @proberesp_ies: the information elements from the last Probe Response frame 1611 * @hidden_beacon_bss: in case this BSS struct represents a probe response from 1612 * a BSS that hides the SSID in its beacon, this points to the BSS struct 1613 * that holds the beacon data. @beacon_ies is still valid, of course, and 1614 * points to the same data as hidden_beacon_bss->beacon_ies in that case. 1615 * @signal: signal strength value (type depends on the wiphy's signal_type) 1616 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1617 */ 1618 struct cfg80211_bss { 1619 struct ieee80211_channel *channel; 1620 enum nl80211_bss_scan_width scan_width; 1621 1622 const struct cfg80211_bss_ies __rcu *ies; 1623 const struct cfg80211_bss_ies __rcu *beacon_ies; 1624 const struct cfg80211_bss_ies __rcu *proberesp_ies; 1625 1626 struct cfg80211_bss *hidden_beacon_bss; 1627 1628 s32 signal; 1629 1630 u16 beacon_interval; 1631 u16 capability; 1632 1633 u8 bssid[ETH_ALEN]; 1634 1635 u8 priv[0] __aligned(sizeof(void *)); 1636 }; 1637 1638 /** 1639 * ieee80211_bss_get_ie - find IE with given ID 1640 * @bss: the bss to search 1641 * @ie: the IE ID 1642 * 1643 * Note that the return value is an RCU-protected pointer, so 1644 * rcu_read_lock() must be held when calling this function. 1645 * Return: %NULL if not found. 1646 */ 1647 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1648 1649 1650 /** 1651 * struct cfg80211_auth_request - Authentication request data 1652 * 1653 * This structure provides information needed to complete IEEE 802.11 1654 * authentication. 1655 * 1656 * @bss: The BSS to authenticate with, the callee must obtain a reference 1657 * to it if it needs to keep it. 1658 * @auth_type: Authentication type (algorithm) 1659 * @ie: Extra IEs to add to Authentication frame or %NULL 1660 * @ie_len: Length of ie buffer in octets 1661 * @key_len: length of WEP key for shared key authentication 1662 * @key_idx: index of WEP key for shared key authentication 1663 * @key: WEP key for shared key authentication 1664 * @sae_data: Non-IE data to use with SAE or %NULL. This starts with 1665 * Authentication transaction sequence number field. 1666 * @sae_data_len: Length of sae_data buffer in octets 1667 */ 1668 struct cfg80211_auth_request { 1669 struct cfg80211_bss *bss; 1670 const u8 *ie; 1671 size_t ie_len; 1672 enum nl80211_auth_type auth_type; 1673 const u8 *key; 1674 u8 key_len, key_idx; 1675 const u8 *sae_data; 1676 size_t sae_data_len; 1677 }; 1678 1679 /** 1680 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1681 * 1682 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1683 * @ASSOC_REQ_DISABLE_VHT: Disable VHT 1684 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association 1685 */ 1686 enum cfg80211_assoc_req_flags { 1687 ASSOC_REQ_DISABLE_HT = BIT(0), 1688 ASSOC_REQ_DISABLE_VHT = BIT(1), 1689 ASSOC_REQ_USE_RRM = BIT(2), 1690 }; 1691 1692 /** 1693 * struct cfg80211_assoc_request - (Re)Association request data 1694 * 1695 * This structure provides information needed to complete IEEE 802.11 1696 * (re)association. 1697 * @bss: The BSS to associate with. If the call is successful the driver is 1698 * given a reference that it must give back to cfg80211_send_rx_assoc() 1699 * or to cfg80211_assoc_timeout(). To ensure proper refcounting, new 1700 * association requests while already associating must be rejected. 1701 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1702 * @ie_len: Length of ie buffer in octets 1703 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1704 * @crypto: crypto settings 1705 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1706 * @flags: See &enum cfg80211_assoc_req_flags 1707 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1708 * will be used in ht_capa. Un-supported values will be ignored. 1709 * @ht_capa_mask: The bits of ht_capa which are to be used. 1710 * @vht_capa: VHT capability override 1711 * @vht_capa_mask: VHT capability mask indicating which fields to use 1712 */ 1713 struct cfg80211_assoc_request { 1714 struct cfg80211_bss *bss; 1715 const u8 *ie, *prev_bssid; 1716 size_t ie_len; 1717 struct cfg80211_crypto_settings crypto; 1718 bool use_mfp; 1719 u32 flags; 1720 struct ieee80211_ht_cap ht_capa; 1721 struct ieee80211_ht_cap ht_capa_mask; 1722 struct ieee80211_vht_cap vht_capa, vht_capa_mask; 1723 }; 1724 1725 /** 1726 * struct cfg80211_deauth_request - Deauthentication request data 1727 * 1728 * This structure provides information needed to complete IEEE 802.11 1729 * deauthentication. 1730 * 1731 * @bssid: the BSSID of the BSS to deauthenticate from 1732 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1733 * @ie_len: Length of ie buffer in octets 1734 * @reason_code: The reason code for the deauthentication 1735 * @local_state_change: if set, change local state only and 1736 * do not set a deauth frame 1737 */ 1738 struct cfg80211_deauth_request { 1739 const u8 *bssid; 1740 const u8 *ie; 1741 size_t ie_len; 1742 u16 reason_code; 1743 bool local_state_change; 1744 }; 1745 1746 /** 1747 * struct cfg80211_disassoc_request - Disassociation request data 1748 * 1749 * This structure provides information needed to complete IEEE 802.11 1750 * disassocation. 1751 * 1752 * @bss: the BSS to disassociate from 1753 * @ie: Extra IEs to add to Disassociation frame or %NULL 1754 * @ie_len: Length of ie buffer in octets 1755 * @reason_code: The reason code for the disassociation 1756 * @local_state_change: This is a request for a local state only, i.e., no 1757 * Disassociation frame is to be transmitted. 1758 */ 1759 struct cfg80211_disassoc_request { 1760 struct cfg80211_bss *bss; 1761 const u8 *ie; 1762 size_t ie_len; 1763 u16 reason_code; 1764 bool local_state_change; 1765 }; 1766 1767 /** 1768 * struct cfg80211_ibss_params - IBSS parameters 1769 * 1770 * This structure defines the IBSS parameters for the join_ibss() 1771 * method. 1772 * 1773 * @ssid: The SSID, will always be non-null. 1774 * @ssid_len: The length of the SSID, will always be non-zero. 1775 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1776 * search for IBSSs with a different BSSID. 1777 * @chandef: defines the channel to use if no other IBSS to join can be found 1778 * @channel_fixed: The channel should be fixed -- do not search for 1779 * IBSSs to join on other channels. 1780 * @ie: information element(s) to include in the beacon 1781 * @ie_len: length of that 1782 * @beacon_interval: beacon interval to use 1783 * @privacy: this is a protected network, keys will be configured 1784 * after joining 1785 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1786 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1787 * required to assume that the port is unauthorized until authorized by 1788 * user space. Otherwise, port is marked authorized by default. 1789 * @userspace_handles_dfs: whether user space controls DFS operation, i.e. 1790 * changes the channel when a radar is detected. This is required 1791 * to operate on DFS channels. 1792 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1793 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1794 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1795 * will be used in ht_capa. Un-supported values will be ignored. 1796 * @ht_capa_mask: The bits of ht_capa which are to be used. 1797 */ 1798 struct cfg80211_ibss_params { 1799 const u8 *ssid; 1800 const u8 *bssid; 1801 struct cfg80211_chan_def chandef; 1802 const u8 *ie; 1803 u8 ssid_len, ie_len; 1804 u16 beacon_interval; 1805 u32 basic_rates; 1806 bool channel_fixed; 1807 bool privacy; 1808 bool control_port; 1809 bool userspace_handles_dfs; 1810 int mcast_rate[IEEE80211_NUM_BANDS]; 1811 struct ieee80211_ht_cap ht_capa; 1812 struct ieee80211_ht_cap ht_capa_mask; 1813 }; 1814 1815 /** 1816 * struct cfg80211_connect_params - Connection parameters 1817 * 1818 * This structure provides information needed to complete IEEE 802.11 1819 * authentication and association. 1820 * 1821 * @channel: The channel to use or %NULL if not specified (auto-select based 1822 * on scan results) 1823 * @channel_hint: The channel of the recommended BSS for initial connection or 1824 * %NULL if not specified 1825 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1826 * results) 1827 * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or 1828 * %NULL if not specified. Unlike the @bssid parameter, the driver is 1829 * allowed to ignore this @bssid_hint if it has knowledge of a better BSS 1830 * to use. 1831 * @ssid: SSID 1832 * @ssid_len: Length of ssid in octets 1833 * @auth_type: Authentication type (algorithm) 1834 * @ie: IEs for association request 1835 * @ie_len: Length of assoc_ie in octets 1836 * @privacy: indicates whether privacy-enabled APs should be used 1837 * @mfp: indicate whether management frame protection is used 1838 * @crypto: crypto settings 1839 * @key_len: length of WEP key for shared key authentication 1840 * @key_idx: index of WEP key for shared key authentication 1841 * @key: WEP key for shared key authentication 1842 * @flags: See &enum cfg80211_assoc_req_flags 1843 * @bg_scan_period: Background scan period in seconds 1844 * or -1 to indicate that default value is to be used. 1845 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1846 * will be used in ht_capa. Un-supported values will be ignored. 1847 * @ht_capa_mask: The bits of ht_capa which are to be used. 1848 * @vht_capa: VHT Capability overrides 1849 * @vht_capa_mask: The bits of vht_capa which are to be used. 1850 */ 1851 struct cfg80211_connect_params { 1852 struct ieee80211_channel *channel; 1853 struct ieee80211_channel *channel_hint; 1854 const u8 *bssid; 1855 const u8 *bssid_hint; 1856 const u8 *ssid; 1857 size_t ssid_len; 1858 enum nl80211_auth_type auth_type; 1859 const u8 *ie; 1860 size_t ie_len; 1861 bool privacy; 1862 enum nl80211_mfp mfp; 1863 struct cfg80211_crypto_settings crypto; 1864 const u8 *key; 1865 u8 key_len, key_idx; 1866 u32 flags; 1867 int bg_scan_period; 1868 struct ieee80211_ht_cap ht_capa; 1869 struct ieee80211_ht_cap ht_capa_mask; 1870 struct ieee80211_vht_cap vht_capa; 1871 struct ieee80211_vht_cap vht_capa_mask; 1872 }; 1873 1874 /** 1875 * enum wiphy_params_flags - set_wiphy_params bitfield values 1876 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1877 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1878 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1879 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1880 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1881 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled 1882 */ 1883 enum wiphy_params_flags { 1884 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1885 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1886 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1887 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1888 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1889 WIPHY_PARAM_DYN_ACK = 1 << 5, 1890 }; 1891 1892 /* 1893 * cfg80211_bitrate_mask - masks for bitrate control 1894 */ 1895 struct cfg80211_bitrate_mask { 1896 struct { 1897 u32 legacy; 1898 u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN]; 1899 u16 vht_mcs[NL80211_VHT_NSS_MAX]; 1900 enum nl80211_txrate_gi gi; 1901 } control[IEEE80211_NUM_BANDS]; 1902 }; 1903 /** 1904 * struct cfg80211_pmksa - PMK Security Association 1905 * 1906 * This structure is passed to the set/del_pmksa() method for PMKSA 1907 * caching. 1908 * 1909 * @bssid: The AP's BSSID. 1910 * @pmkid: The PMK material itself. 1911 */ 1912 struct cfg80211_pmksa { 1913 const u8 *bssid; 1914 const u8 *pmkid; 1915 }; 1916 1917 /** 1918 * struct cfg80211_pkt_pattern - packet pattern 1919 * @mask: bitmask where to match pattern and where to ignore bytes, 1920 * one bit per byte, in same format as nl80211 1921 * @pattern: bytes to match where bitmask is 1 1922 * @pattern_len: length of pattern (in bytes) 1923 * @pkt_offset: packet offset (in bytes) 1924 * 1925 * Internal note: @mask and @pattern are allocated in one chunk of 1926 * memory, free @mask only! 1927 */ 1928 struct cfg80211_pkt_pattern { 1929 const u8 *mask, *pattern; 1930 int pattern_len; 1931 int pkt_offset; 1932 }; 1933 1934 /** 1935 * struct cfg80211_wowlan_tcp - TCP connection parameters 1936 * 1937 * @sock: (internal) socket for source port allocation 1938 * @src: source IP address 1939 * @dst: destination IP address 1940 * @dst_mac: destination MAC address 1941 * @src_port: source port 1942 * @dst_port: destination port 1943 * @payload_len: data payload length 1944 * @payload: data payload buffer 1945 * @payload_seq: payload sequence stamping configuration 1946 * @data_interval: interval at which to send data packets 1947 * @wake_len: wakeup payload match length 1948 * @wake_data: wakeup payload match data 1949 * @wake_mask: wakeup payload match mask 1950 * @tokens_size: length of the tokens buffer 1951 * @payload_tok: payload token usage configuration 1952 */ 1953 struct cfg80211_wowlan_tcp { 1954 struct socket *sock; 1955 __be32 src, dst; 1956 u16 src_port, dst_port; 1957 u8 dst_mac[ETH_ALEN]; 1958 int payload_len; 1959 const u8 *payload; 1960 struct nl80211_wowlan_tcp_data_seq payload_seq; 1961 u32 data_interval; 1962 u32 wake_len; 1963 const u8 *wake_data, *wake_mask; 1964 u32 tokens_size; 1965 /* must be last, variable member */ 1966 struct nl80211_wowlan_tcp_data_token payload_tok; 1967 }; 1968 1969 /** 1970 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1971 * 1972 * This structure defines the enabled WoWLAN triggers for the device. 1973 * @any: wake up on any activity -- special trigger if device continues 1974 * operating as normal during suspend 1975 * @disconnect: wake up if getting disconnected 1976 * @magic_pkt: wake up on receiving magic packet 1977 * @patterns: wake up on receiving packet matching a pattern 1978 * @n_patterns: number of patterns 1979 * @gtk_rekey_failure: wake up on GTK rekey failure 1980 * @eap_identity_req: wake up on EAP identity request packet 1981 * @four_way_handshake: wake up on 4-way handshake 1982 * @rfkill_release: wake up when rfkill is released 1983 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h. 1984 * NULL if not configured. 1985 * @nd_config: configuration for the scan to be used for net detect wake. 1986 */ 1987 struct cfg80211_wowlan { 1988 bool any, disconnect, magic_pkt, gtk_rekey_failure, 1989 eap_identity_req, four_way_handshake, 1990 rfkill_release; 1991 struct cfg80211_pkt_pattern *patterns; 1992 struct cfg80211_wowlan_tcp *tcp; 1993 int n_patterns; 1994 struct cfg80211_sched_scan_request *nd_config; 1995 }; 1996 1997 /** 1998 * struct cfg80211_coalesce_rules - Coalesce rule parameters 1999 * 2000 * This structure defines coalesce rule for the device. 2001 * @delay: maximum coalescing delay in msecs. 2002 * @condition: condition for packet coalescence. 2003 * see &enum nl80211_coalesce_condition. 2004 * @patterns: array of packet patterns 2005 * @n_patterns: number of patterns 2006 */ 2007 struct cfg80211_coalesce_rules { 2008 int delay; 2009 enum nl80211_coalesce_condition condition; 2010 struct cfg80211_pkt_pattern *patterns; 2011 int n_patterns; 2012 }; 2013 2014 /** 2015 * struct cfg80211_coalesce - Packet coalescing settings 2016 * 2017 * This structure defines coalescing settings. 2018 * @rules: array of coalesce rules 2019 * @n_rules: number of rules 2020 */ 2021 struct cfg80211_coalesce { 2022 struct cfg80211_coalesce_rules *rules; 2023 int n_rules; 2024 }; 2025 2026 /** 2027 * struct cfg80211_wowlan_nd_match - information about the match 2028 * 2029 * @ssid: SSID of the match that triggered the wake up 2030 * @n_channels: Number of channels where the match occurred. This 2031 * value may be zero if the driver can't report the channels. 2032 * @channels: center frequencies of the channels where a match 2033 * occurred (in MHz) 2034 */ 2035 struct cfg80211_wowlan_nd_match { 2036 struct cfg80211_ssid ssid; 2037 int n_channels; 2038 u32 channels[]; 2039 }; 2040 2041 /** 2042 * struct cfg80211_wowlan_nd_info - net detect wake up information 2043 * 2044 * @n_matches: Number of match information instances provided in 2045 * @matches. This value may be zero if the driver can't provide 2046 * match information. 2047 * @matches: Array of pointers to matches containing information about 2048 * the matches that triggered the wake up. 2049 */ 2050 struct cfg80211_wowlan_nd_info { 2051 int n_matches; 2052 struct cfg80211_wowlan_nd_match *matches[]; 2053 }; 2054 2055 /** 2056 * struct cfg80211_wowlan_wakeup - wakeup report 2057 * @disconnect: woke up by getting disconnected 2058 * @magic_pkt: woke up by receiving magic packet 2059 * @gtk_rekey_failure: woke up by GTK rekey failure 2060 * @eap_identity_req: woke up by EAP identity request packet 2061 * @four_way_handshake: woke up by 4-way handshake 2062 * @rfkill_release: woke up by rfkill being released 2063 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern 2064 * @packet_present_len: copied wakeup packet data 2065 * @packet_len: original wakeup packet length 2066 * @packet: The packet causing the wakeup, if any. 2067 * @packet_80211: For pattern match, magic packet and other data 2068 * frame triggers an 802.3 frame should be reported, for 2069 * disconnect due to deauth 802.11 frame. This indicates which 2070 * it is. 2071 * @tcp_match: TCP wakeup packet received 2072 * @tcp_connlost: TCP connection lost or failed to establish 2073 * @tcp_nomoretokens: TCP data ran out of tokens 2074 * @net_detect: if not %NULL, woke up because of net detect 2075 */ 2076 struct cfg80211_wowlan_wakeup { 2077 bool disconnect, magic_pkt, gtk_rekey_failure, 2078 eap_identity_req, four_way_handshake, 2079 rfkill_release, packet_80211, 2080 tcp_match, tcp_connlost, tcp_nomoretokens; 2081 s32 pattern_idx; 2082 u32 packet_present_len, packet_len; 2083 const void *packet; 2084 struct cfg80211_wowlan_nd_info *net_detect; 2085 }; 2086 2087 /** 2088 * struct cfg80211_gtk_rekey_data - rekey data 2089 * @kek: key encryption key (NL80211_KEK_LEN bytes) 2090 * @kck: key confirmation key (NL80211_KCK_LEN bytes) 2091 * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes) 2092 */ 2093 struct cfg80211_gtk_rekey_data { 2094 const u8 *kek, *kck, *replay_ctr; 2095 }; 2096 2097 /** 2098 * struct cfg80211_update_ft_ies_params - FT IE Information 2099 * 2100 * This structure provides information needed to update the fast transition IE 2101 * 2102 * @md: The Mobility Domain ID, 2 Octet value 2103 * @ie: Fast Transition IEs 2104 * @ie_len: Length of ft_ie in octets 2105 */ 2106 struct cfg80211_update_ft_ies_params { 2107 u16 md; 2108 const u8 *ie; 2109 size_t ie_len; 2110 }; 2111 2112 /** 2113 * struct cfg80211_mgmt_tx_params - mgmt tx parameters 2114 * 2115 * This structure provides information needed to transmit a mgmt frame 2116 * 2117 * @chan: channel to use 2118 * @offchan: indicates wether off channel operation is required 2119 * @wait: duration for ROC 2120 * @buf: buffer to transmit 2121 * @len: buffer length 2122 * @no_cck: don't use cck rates for this frame 2123 * @dont_wait_for_ack: tells the low level not to wait for an ack 2124 * @n_csa_offsets: length of csa_offsets array 2125 * @csa_offsets: array of all the csa offsets in the frame 2126 */ 2127 struct cfg80211_mgmt_tx_params { 2128 struct ieee80211_channel *chan; 2129 bool offchan; 2130 unsigned int wait; 2131 const u8 *buf; 2132 size_t len; 2133 bool no_cck; 2134 bool dont_wait_for_ack; 2135 int n_csa_offsets; 2136 const u16 *csa_offsets; 2137 }; 2138 2139 /** 2140 * struct cfg80211_dscp_exception - DSCP exception 2141 * 2142 * @dscp: DSCP value that does not adhere to the user priority range definition 2143 * @up: user priority value to which the corresponding DSCP value belongs 2144 */ 2145 struct cfg80211_dscp_exception { 2146 u8 dscp; 2147 u8 up; 2148 }; 2149 2150 /** 2151 * struct cfg80211_dscp_range - DSCP range definition for user priority 2152 * 2153 * @low: lowest DSCP value of this user priority range, inclusive 2154 * @high: highest DSCP value of this user priority range, inclusive 2155 */ 2156 struct cfg80211_dscp_range { 2157 u8 low; 2158 u8 high; 2159 }; 2160 2161 /* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */ 2162 #define IEEE80211_QOS_MAP_MAX_EX 21 2163 #define IEEE80211_QOS_MAP_LEN_MIN 16 2164 #define IEEE80211_QOS_MAP_LEN_MAX \ 2165 (IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX) 2166 2167 /** 2168 * struct cfg80211_qos_map - QoS Map Information 2169 * 2170 * This struct defines the Interworking QoS map setting for DSCP values 2171 * 2172 * @num_des: number of DSCP exceptions (0..21) 2173 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from 2174 * the user priority DSCP range definition 2175 * @up: DSCP range definition for a particular user priority 2176 */ 2177 struct cfg80211_qos_map { 2178 u8 num_des; 2179 struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX]; 2180 struct cfg80211_dscp_range up[8]; 2181 }; 2182 2183 /** 2184 * struct cfg80211_ops - backend description for wireless configuration 2185 * 2186 * This struct is registered by fullmac card drivers and/or wireless stacks 2187 * in order to handle configuration requests on their interfaces. 2188 * 2189 * All callbacks except where otherwise noted should return 0 2190 * on success or a negative error code. 2191 * 2192 * All operations are currently invoked under rtnl for consistency with the 2193 * wireless extensions but this is subject to reevaluation as soon as this 2194 * code is used more widely and we have a first user without wext. 2195 * 2196 * @suspend: wiphy device needs to be suspended. The variable @wow will 2197 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 2198 * configured for the device. 2199 * @resume: wiphy device needs to be resumed 2200 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback 2201 * to call device_set_wakeup_enable() to enable/disable wakeup from 2202 * the device. 2203 * 2204 * @add_virtual_intf: create a new virtual interface with the given name, 2205 * must set the struct wireless_dev's iftype. Beware: You must create 2206 * the new netdev in the wiphy's network namespace! Returns the struct 2207 * wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must 2208 * also set the address member in the wdev. 2209 * 2210 * @del_virtual_intf: remove the virtual interface 2211 * 2212 * @change_virtual_intf: change type/configuration of virtual interface, 2213 * keep the struct wireless_dev's iftype updated. 2214 * 2215 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 2216 * when adding a group key. 2217 * 2218 * @get_key: get information about the key with the given parameters. 2219 * @mac_addr will be %NULL when requesting information for a group 2220 * key. All pointers given to the @callback function need not be valid 2221 * after it returns. This function should return an error if it is 2222 * not possible to retrieve the key, -ENOENT if it doesn't exist. 2223 * 2224 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 2225 * and @key_index, return -ENOENT if the key doesn't exist. 2226 * 2227 * @set_default_key: set the default key on an interface 2228 * 2229 * @set_default_mgmt_key: set the default management frame key on an interface 2230 * 2231 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 2232 * 2233 * @start_ap: Start acting in AP mode defined by the parameters. 2234 * @change_beacon: Change the beacon parameters for an access point mode 2235 * interface. This should reject the call when AP mode wasn't started. 2236 * @stop_ap: Stop being an AP, including stopping beaconing. 2237 * 2238 * @add_station: Add a new station. 2239 * @del_station: Remove a station 2240 * @change_station: Modify a given station. Note that flags changes are not much 2241 * validated in cfg80211, in particular the auth/assoc/authorized flags 2242 * might come to the driver in invalid combinations -- make sure to check 2243 * them, also against the existing state! Drivers must call 2244 * cfg80211_check_station_change() to validate the information. 2245 * @get_station: get station information for the station identified by @mac 2246 * @dump_station: dump station callback -- resume dump at index @idx 2247 * 2248 * @add_mpath: add a fixed mesh path 2249 * @del_mpath: delete a given mesh path 2250 * @change_mpath: change a given mesh path 2251 * @get_mpath: get a mesh path for the given parameters 2252 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 2253 * @get_mpp: get a mesh proxy path for the given parameters 2254 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx 2255 * @join_mesh: join the mesh network with the specified parameters 2256 * (invoked with the wireless_dev mutex held) 2257 * @leave_mesh: leave the current mesh network 2258 * (invoked with the wireless_dev mutex held) 2259 * 2260 * @get_mesh_config: Get the current mesh configuration 2261 * 2262 * @update_mesh_config: Update mesh parameters on a running mesh. 2263 * The mask is a bitfield which tells us which parameters to 2264 * set, and which to leave alone. 2265 * 2266 * @change_bss: Modify parameters for a given BSS. 2267 * 2268 * @set_txq_params: Set TX queue parameters 2269 * 2270 * @libertas_set_mesh_channel: Only for backward compatibility for libertas, 2271 * as it doesn't implement join_mesh and needs to set the channel to 2272 * join the mesh instead. 2273 * 2274 * @set_monitor_channel: Set the monitor mode channel for the device. If other 2275 * interfaces are active this callback should reject the configuration. 2276 * If no interfaces are active or the device is down, the channel should 2277 * be stored for when a monitor interface becomes active. 2278 * 2279 * @scan: Request to do a scan. If returning zero, the scan request is given 2280 * the driver, and will be valid until passed to cfg80211_scan_done(). 2281 * For scan results, call cfg80211_inform_bss(); you can call this outside 2282 * the scan/scan_done bracket too. 2283 * 2284 * @auth: Request to authenticate with the specified peer 2285 * (invoked with the wireless_dev mutex held) 2286 * @assoc: Request to (re)associate with the specified peer 2287 * (invoked with the wireless_dev mutex held) 2288 * @deauth: Request to deauthenticate from the specified peer 2289 * (invoked with the wireless_dev mutex held) 2290 * @disassoc: Request to disassociate from the specified peer 2291 * (invoked with the wireless_dev mutex held) 2292 * 2293 * @connect: Connect to the ESS with the specified parameters. When connected, 2294 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 2295 * If the connection fails for some reason, call cfg80211_connect_result() 2296 * with the status from the AP. 2297 * (invoked with the wireless_dev mutex held) 2298 * @disconnect: Disconnect from the BSS/ESS. 2299 * (invoked with the wireless_dev mutex held) 2300 * 2301 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 2302 * cfg80211_ibss_joined(), also call that function when changing BSSID due 2303 * to a merge. 2304 * (invoked with the wireless_dev mutex held) 2305 * @leave_ibss: Leave the IBSS. 2306 * (invoked with the wireless_dev mutex held) 2307 * 2308 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or 2309 * MESH mode) 2310 * 2311 * @set_wiphy_params: Notify that wiphy parameters have changed; 2312 * @changed bitfield (see &enum wiphy_params_flags) describes which values 2313 * have changed. The actual parameter values are available in 2314 * struct wiphy. If returning an error, no value should be changed. 2315 * 2316 * @set_tx_power: set the transmit power according to the parameters, 2317 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). The 2318 * wdev may be %NULL if power was set for the wiphy, and will 2319 * always be %NULL unless the driver supports per-vif TX power 2320 * (as advertised by the nl80211 feature flag.) 2321 * @get_tx_power: store the current TX power into the dbm variable; 2322 * return 0 if successful 2323 * 2324 * @set_wds_peer: set the WDS peer for a WDS interface 2325 * 2326 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 2327 * functions to adjust rfkill hw state 2328 * 2329 * @dump_survey: get site survey information. 2330 * 2331 * @remain_on_channel: Request the driver to remain awake on the specified 2332 * channel for the specified duration to complete an off-channel 2333 * operation (e.g., public action frame exchange). When the driver is 2334 * ready on the requested channel, it must indicate this with an event 2335 * notification by calling cfg80211_ready_on_channel(). 2336 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 2337 * This allows the operation to be terminated prior to timeout based on 2338 * the duration value. 2339 * @mgmt_tx: Transmit a management frame. 2340 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 2341 * frame on another channel 2342 * 2343 * @testmode_cmd: run a test mode command; @wdev may be %NULL 2344 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 2345 * used by the function, but 0 and 1 must not be touched. Additionally, 2346 * return error codes other than -ENOBUFS and -ENOENT will terminate the 2347 * dump and return to userspace with an error, so be careful. If any data 2348 * was passed in from userspace then the data/len arguments will be present 2349 * and point to the data contained in %NL80211_ATTR_TESTDATA. 2350 * 2351 * @set_bitrate_mask: set the bitrate mask configuration 2352 * 2353 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 2354 * devices running firmwares capable of generating the (re) association 2355 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 2356 * @del_pmksa: Delete a cached PMKID. 2357 * @flush_pmksa: Flush all cached PMKIDs. 2358 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 2359 * allows the driver to adjust the dynamic ps timeout value. 2360 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 2361 * @set_cqm_txe_config: Configure connection quality monitor TX error 2362 * thresholds. 2363 * @sched_scan_start: Tell the driver to start a scheduled scan. 2364 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This 2365 * call must stop the scheduled scan and be ready for starting a new one 2366 * before it returns, i.e. @sched_scan_start may be called immediately 2367 * after that again and should not fail in that case. The driver should 2368 * not call cfg80211_sched_scan_stopped() for a requested stop (when this 2369 * method returns 0.) 2370 * 2371 * @mgmt_frame_register: Notify driver that a management frame type was 2372 * registered. The callback is allowed to sleep. 2373 * 2374 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2375 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2376 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2377 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2378 * 2379 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2380 * 2381 * @tdls_mgmt: Transmit a TDLS management frame. 2382 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 2383 * 2384 * @probe_client: probe an associated client, must return a cookie that it 2385 * later passes to cfg80211_probe_status(). 2386 * 2387 * @set_noack_map: Set the NoAck Map for the TIDs. 2388 * 2389 * @get_channel: Get the current operating channel for the virtual interface. 2390 * For monitor interfaces, it should return %NULL unless there's a single 2391 * current monitoring channel. 2392 * 2393 * @start_p2p_device: Start the given P2P device. 2394 * @stop_p2p_device: Stop the given P2P device. 2395 * 2396 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode. 2397 * Parameters include ACL policy, an array of MAC address of stations 2398 * and the number of MAC addresses. If there is already a list in driver 2399 * this new list replaces the existing one. Driver has to clear its ACL 2400 * when number of MAC addresses entries is passed as 0. Drivers which 2401 * advertise the support for MAC based ACL have to implement this callback. 2402 * 2403 * @start_radar_detection: Start radar detection in the driver. 2404 * 2405 * @update_ft_ies: Provide updated Fast BSS Transition information to the 2406 * driver. If the SME is in the driver/firmware, this information can be 2407 * used in building Authentication and Reassociation Request frames. 2408 * 2409 * @crit_proto_start: Indicates a critical protocol needs more link reliability 2410 * for a given duration (milliseconds). The protocol is provided so the 2411 * driver can take the most appropriate actions. 2412 * @crit_proto_stop: Indicates critical protocol no longer needs increased link 2413 * reliability. This operation can not fail. 2414 * @set_coalesce: Set coalesce parameters. 2415 * 2416 * @channel_switch: initiate channel-switch procedure (with CSA). Driver is 2417 * responsible for veryfing if the switch is possible. Since this is 2418 * inherently tricky driver may decide to disconnect an interface later 2419 * with cfg80211_stop_iface(). This doesn't mean driver can accept 2420 * everything. It should do it's best to verify requests and reject them 2421 * as soon as possible. 2422 * 2423 * @set_qos_map: Set QoS mapping information to the driver 2424 * 2425 * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the 2426 * given interface This is used e.g. for dynamic HT 20/40 MHz channel width 2427 * changes during the lifetime of the BSS. 2428 * 2429 * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device 2430 * with the given parameters; action frame exchange has been handled by 2431 * userspace so this just has to modify the TX path to take the TS into 2432 * account. 2433 * If the admitted time is 0 just validate the parameters to make sure 2434 * the session can be created at all; it is valid to just always return 2435 * success for that but that may result in inefficient behaviour (handshake 2436 * with the peer followed by immediate teardown when the addition is later 2437 * rejected) 2438 * @del_tx_ts: remove an existing TX TS 2439 * 2440 * @join_ocb: join the OCB network with the specified parameters 2441 * (invoked with the wireless_dev mutex held) 2442 * @leave_ocb: leave the current OCB network 2443 * (invoked with the wireless_dev mutex held) 2444 * 2445 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver 2446 * is responsible for continually initiating channel-switching operations 2447 * and returning to the base channel for communication with the AP. 2448 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both 2449 * peers must be on the base channel when the call completes. 2450 */ 2451 struct cfg80211_ops { 2452 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 2453 int (*resume)(struct wiphy *wiphy); 2454 void (*set_wakeup)(struct wiphy *wiphy, bool enabled); 2455 2456 struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy, 2457 const char *name, 2458 unsigned char name_assign_type, 2459 enum nl80211_iftype type, 2460 u32 *flags, 2461 struct vif_params *params); 2462 int (*del_virtual_intf)(struct wiphy *wiphy, 2463 struct wireless_dev *wdev); 2464 int (*change_virtual_intf)(struct wiphy *wiphy, 2465 struct net_device *dev, 2466 enum nl80211_iftype type, u32 *flags, 2467 struct vif_params *params); 2468 2469 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 2470 u8 key_index, bool pairwise, const u8 *mac_addr, 2471 struct key_params *params); 2472 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 2473 u8 key_index, bool pairwise, const u8 *mac_addr, 2474 void *cookie, 2475 void (*callback)(void *cookie, struct key_params*)); 2476 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 2477 u8 key_index, bool pairwise, const u8 *mac_addr); 2478 int (*set_default_key)(struct wiphy *wiphy, 2479 struct net_device *netdev, 2480 u8 key_index, bool unicast, bool multicast); 2481 int (*set_default_mgmt_key)(struct wiphy *wiphy, 2482 struct net_device *netdev, 2483 u8 key_index); 2484 2485 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 2486 struct cfg80211_ap_settings *settings); 2487 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 2488 struct cfg80211_beacon_data *info); 2489 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 2490 2491 2492 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 2493 const u8 *mac, 2494 struct station_parameters *params); 2495 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 2496 struct station_del_parameters *params); 2497 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 2498 const u8 *mac, 2499 struct station_parameters *params); 2500 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 2501 const u8 *mac, struct station_info *sinfo); 2502 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 2503 int idx, u8 *mac, struct station_info *sinfo); 2504 2505 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 2506 const u8 *dst, const u8 *next_hop); 2507 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 2508 const u8 *dst); 2509 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 2510 const u8 *dst, const u8 *next_hop); 2511 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 2512 u8 *dst, u8 *next_hop, struct mpath_info *pinfo); 2513 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 2514 int idx, u8 *dst, u8 *next_hop, 2515 struct mpath_info *pinfo); 2516 int (*get_mpp)(struct wiphy *wiphy, struct net_device *dev, 2517 u8 *dst, u8 *mpp, struct mpath_info *pinfo); 2518 int (*dump_mpp)(struct wiphy *wiphy, struct net_device *dev, 2519 int idx, u8 *dst, u8 *mpp, 2520 struct mpath_info *pinfo); 2521 int (*get_mesh_config)(struct wiphy *wiphy, 2522 struct net_device *dev, 2523 struct mesh_config *conf); 2524 int (*update_mesh_config)(struct wiphy *wiphy, 2525 struct net_device *dev, u32 mask, 2526 const struct mesh_config *nconf); 2527 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 2528 const struct mesh_config *conf, 2529 const struct mesh_setup *setup); 2530 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 2531 2532 int (*join_ocb)(struct wiphy *wiphy, struct net_device *dev, 2533 struct ocb_setup *setup); 2534 int (*leave_ocb)(struct wiphy *wiphy, struct net_device *dev); 2535 2536 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 2537 struct bss_parameters *params); 2538 2539 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 2540 struct ieee80211_txq_params *params); 2541 2542 int (*libertas_set_mesh_channel)(struct wiphy *wiphy, 2543 struct net_device *dev, 2544 struct ieee80211_channel *chan); 2545 2546 int (*set_monitor_channel)(struct wiphy *wiphy, 2547 struct cfg80211_chan_def *chandef); 2548 2549 int (*scan)(struct wiphy *wiphy, 2550 struct cfg80211_scan_request *request); 2551 2552 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 2553 struct cfg80211_auth_request *req); 2554 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 2555 struct cfg80211_assoc_request *req); 2556 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 2557 struct cfg80211_deauth_request *req); 2558 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 2559 struct cfg80211_disassoc_request *req); 2560 2561 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 2562 struct cfg80211_connect_params *sme); 2563 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 2564 u16 reason_code); 2565 2566 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 2567 struct cfg80211_ibss_params *params); 2568 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 2569 2570 int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, 2571 int rate[IEEE80211_NUM_BANDS]); 2572 2573 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 2574 2575 int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2576 enum nl80211_tx_power_setting type, int mbm); 2577 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2578 int *dbm); 2579 2580 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 2581 const u8 *addr); 2582 2583 void (*rfkill_poll)(struct wiphy *wiphy); 2584 2585 #ifdef CONFIG_NL80211_TESTMODE 2586 int (*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev, 2587 void *data, int len); 2588 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 2589 struct netlink_callback *cb, 2590 void *data, int len); 2591 #endif 2592 2593 int (*set_bitrate_mask)(struct wiphy *wiphy, 2594 struct net_device *dev, 2595 const u8 *peer, 2596 const struct cfg80211_bitrate_mask *mask); 2597 2598 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 2599 int idx, struct survey_info *info); 2600 2601 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2602 struct cfg80211_pmksa *pmksa); 2603 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2604 struct cfg80211_pmksa *pmksa); 2605 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 2606 2607 int (*remain_on_channel)(struct wiphy *wiphy, 2608 struct wireless_dev *wdev, 2609 struct ieee80211_channel *chan, 2610 unsigned int duration, 2611 u64 *cookie); 2612 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 2613 struct wireless_dev *wdev, 2614 u64 cookie); 2615 2616 int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev, 2617 struct cfg80211_mgmt_tx_params *params, 2618 u64 *cookie); 2619 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 2620 struct wireless_dev *wdev, 2621 u64 cookie); 2622 2623 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2624 bool enabled, int timeout); 2625 2626 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 2627 struct net_device *dev, 2628 s32 rssi_thold, u32 rssi_hyst); 2629 2630 int (*set_cqm_txe_config)(struct wiphy *wiphy, 2631 struct net_device *dev, 2632 u32 rate, u32 pkts, u32 intvl); 2633 2634 void (*mgmt_frame_register)(struct wiphy *wiphy, 2635 struct wireless_dev *wdev, 2636 u16 frame_type, bool reg); 2637 2638 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 2639 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 2640 2641 int (*sched_scan_start)(struct wiphy *wiphy, 2642 struct net_device *dev, 2643 struct cfg80211_sched_scan_request *request); 2644 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 2645 2646 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 2647 struct cfg80211_gtk_rekey_data *data); 2648 2649 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2650 const u8 *peer, u8 action_code, u8 dialog_token, 2651 u16 status_code, u32 peer_capability, 2652 bool initiator, const u8 *buf, size_t len); 2653 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 2654 const u8 *peer, enum nl80211_tdls_operation oper); 2655 2656 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 2657 const u8 *peer, u64 *cookie); 2658 2659 int (*set_noack_map)(struct wiphy *wiphy, 2660 struct net_device *dev, 2661 u16 noack_map); 2662 2663 int (*get_channel)(struct wiphy *wiphy, 2664 struct wireless_dev *wdev, 2665 struct cfg80211_chan_def *chandef); 2666 2667 int (*start_p2p_device)(struct wiphy *wiphy, 2668 struct wireless_dev *wdev); 2669 void (*stop_p2p_device)(struct wiphy *wiphy, 2670 struct wireless_dev *wdev); 2671 2672 int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev, 2673 const struct cfg80211_acl_data *params); 2674 2675 int (*start_radar_detection)(struct wiphy *wiphy, 2676 struct net_device *dev, 2677 struct cfg80211_chan_def *chandef, 2678 u32 cac_time_ms); 2679 int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev, 2680 struct cfg80211_update_ft_ies_params *ftie); 2681 int (*crit_proto_start)(struct wiphy *wiphy, 2682 struct wireless_dev *wdev, 2683 enum nl80211_crit_proto_id protocol, 2684 u16 duration); 2685 void (*crit_proto_stop)(struct wiphy *wiphy, 2686 struct wireless_dev *wdev); 2687 int (*set_coalesce)(struct wiphy *wiphy, 2688 struct cfg80211_coalesce *coalesce); 2689 2690 int (*channel_switch)(struct wiphy *wiphy, 2691 struct net_device *dev, 2692 struct cfg80211_csa_settings *params); 2693 2694 int (*set_qos_map)(struct wiphy *wiphy, 2695 struct net_device *dev, 2696 struct cfg80211_qos_map *qos_map); 2697 2698 int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev, 2699 struct cfg80211_chan_def *chandef); 2700 2701 int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2702 u8 tsid, const u8 *peer, u8 user_prio, 2703 u16 admitted_time); 2704 int (*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2705 u8 tsid, const u8 *peer); 2706 2707 int (*tdls_channel_switch)(struct wiphy *wiphy, 2708 struct net_device *dev, 2709 const u8 *addr, u8 oper_class, 2710 struct cfg80211_chan_def *chandef); 2711 void (*tdls_cancel_channel_switch)(struct wiphy *wiphy, 2712 struct net_device *dev, 2713 const u8 *addr); 2714 }; 2715 2716 /* 2717 * wireless hardware and networking interfaces structures 2718 * and registration/helper functions 2719 */ 2720 2721 /** 2722 * enum wiphy_flags - wiphy capability flags 2723 * 2724 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 2725 * wiphy at all 2726 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 2727 * by default -- this flag will be set depending on the kernel's default 2728 * on wiphy_new(), but can be changed by the driver if it has a good 2729 * reason to override the default 2730 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 2731 * on a VLAN interface) 2732 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 2733 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 2734 * control port protocol ethertype. The device also honours the 2735 * control_port_no_encrypt flag. 2736 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 2737 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 2738 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 2739 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 2740 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 2741 * firmware. 2742 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 2743 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 2744 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 2745 * link setup/discovery operations internally. Setup, discovery and 2746 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 2747 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 2748 * used for asking the driver/firmware to perform a TDLS operation. 2749 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 2750 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 2751 * when there are virtual interfaces in AP mode by calling 2752 * cfg80211_report_obss_beacon(). 2753 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 2754 * responds to probe-requests in hardware. 2755 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 2756 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 2757 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels. 2758 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in 2759 * beaconing mode (AP, IBSS, Mesh, ...). 2760 */ 2761 enum wiphy_flags { 2762 /* use hole at 0 */ 2763 /* use hole at 1 */ 2764 /* use hole at 2 */ 2765 WIPHY_FLAG_NETNS_OK = BIT(3), 2766 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 2767 WIPHY_FLAG_4ADDR_AP = BIT(5), 2768 WIPHY_FLAG_4ADDR_STATION = BIT(6), 2769 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 2770 WIPHY_FLAG_IBSS_RSN = BIT(8), 2771 WIPHY_FLAG_MESH_AUTH = BIT(10), 2772 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 2773 /* use hole at 12 */ 2774 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 2775 WIPHY_FLAG_AP_UAPSD = BIT(14), 2776 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 2777 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 2778 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 2779 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 2780 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 2781 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 2782 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 2783 WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22), 2784 WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23), 2785 }; 2786 2787 /** 2788 * struct ieee80211_iface_limit - limit on certain interface types 2789 * @max: maximum number of interfaces of these types 2790 * @types: interface types (bits) 2791 */ 2792 struct ieee80211_iface_limit { 2793 u16 max; 2794 u16 types; 2795 }; 2796 2797 /** 2798 * struct ieee80211_iface_combination - possible interface combination 2799 * @limits: limits for the given interface types 2800 * @n_limits: number of limitations 2801 * @num_different_channels: can use up to this many different channels 2802 * @max_interfaces: maximum number of interfaces in total allowed in this 2803 * group 2804 * @beacon_int_infra_match: In this combination, the beacon intervals 2805 * between infrastructure and AP types must match. This is required 2806 * only in special cases. 2807 * @radar_detect_widths: bitmap of channel widths supported for radar detection 2808 * @radar_detect_regions: bitmap of regions supported for radar detection 2809 * 2810 * With this structure the driver can describe which interface 2811 * combinations it supports concurrently. 2812 * 2813 * Examples: 2814 * 2815 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 2816 * 2817 * struct ieee80211_iface_limit limits1[] = { 2818 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2819 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 2820 * }; 2821 * struct ieee80211_iface_combination combination1 = { 2822 * .limits = limits1, 2823 * .n_limits = ARRAY_SIZE(limits1), 2824 * .max_interfaces = 2, 2825 * .beacon_int_infra_match = true, 2826 * }; 2827 * 2828 * 2829 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 2830 * 2831 * struct ieee80211_iface_limit limits2[] = { 2832 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 2833 * BIT(NL80211_IFTYPE_P2P_GO), }, 2834 * }; 2835 * struct ieee80211_iface_combination combination2 = { 2836 * .limits = limits2, 2837 * .n_limits = ARRAY_SIZE(limits2), 2838 * .max_interfaces = 8, 2839 * .num_different_channels = 1, 2840 * }; 2841 * 2842 * 2843 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 2844 * 2845 * This allows for an infrastructure connection and three P2P connections. 2846 * 2847 * struct ieee80211_iface_limit limits3[] = { 2848 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2849 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 2850 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 2851 * }; 2852 * struct ieee80211_iface_combination combination3 = { 2853 * .limits = limits3, 2854 * .n_limits = ARRAY_SIZE(limits3), 2855 * .max_interfaces = 4, 2856 * .num_different_channels = 2, 2857 * }; 2858 */ 2859 struct ieee80211_iface_combination { 2860 const struct ieee80211_iface_limit *limits; 2861 u32 num_different_channels; 2862 u16 max_interfaces; 2863 u8 n_limits; 2864 bool beacon_int_infra_match; 2865 u8 radar_detect_widths; 2866 u8 radar_detect_regions; 2867 }; 2868 2869 struct ieee80211_txrx_stypes { 2870 u16 tx, rx; 2871 }; 2872 2873 /** 2874 * enum wiphy_wowlan_support_flags - WoWLAN support flags 2875 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 2876 * trigger that keeps the device operating as-is and 2877 * wakes up the host on any activity, for example a 2878 * received packet that passed filtering; note that the 2879 * packet should be preserved in that case 2880 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 2881 * (see nl80211.h) 2882 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 2883 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 2884 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 2885 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 2886 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 2887 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 2888 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection 2889 */ 2890 enum wiphy_wowlan_support_flags { 2891 WIPHY_WOWLAN_ANY = BIT(0), 2892 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 2893 WIPHY_WOWLAN_DISCONNECT = BIT(2), 2894 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 2895 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 2896 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 2897 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 2898 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 2899 WIPHY_WOWLAN_NET_DETECT = BIT(8), 2900 }; 2901 2902 struct wiphy_wowlan_tcp_support { 2903 const struct nl80211_wowlan_tcp_data_token_feature *tok; 2904 u32 data_payload_max; 2905 u32 data_interval_max; 2906 u32 wake_payload_max; 2907 bool seq; 2908 }; 2909 2910 /** 2911 * struct wiphy_wowlan_support - WoWLAN support data 2912 * @flags: see &enum wiphy_wowlan_support_flags 2913 * @n_patterns: number of supported wakeup patterns 2914 * (see nl80211.h for the pattern definition) 2915 * @pattern_max_len: maximum length of each pattern 2916 * @pattern_min_len: minimum length of each pattern 2917 * @max_pkt_offset: maximum Rx packet offset 2918 * @max_nd_match_sets: maximum number of matchsets for net-detect, 2919 * similar, but not necessarily identical, to max_match_sets for 2920 * scheduled scans. 2921 * See &struct cfg80211_sched_scan_request.@match_sets for more 2922 * details. 2923 * @tcp: TCP wakeup support information 2924 */ 2925 struct wiphy_wowlan_support { 2926 u32 flags; 2927 int n_patterns; 2928 int pattern_max_len; 2929 int pattern_min_len; 2930 int max_pkt_offset; 2931 int max_nd_match_sets; 2932 const struct wiphy_wowlan_tcp_support *tcp; 2933 }; 2934 2935 /** 2936 * struct wiphy_coalesce_support - coalesce support data 2937 * @n_rules: maximum number of coalesce rules 2938 * @max_delay: maximum supported coalescing delay in msecs 2939 * @n_patterns: number of supported patterns in a rule 2940 * (see nl80211.h for the pattern definition) 2941 * @pattern_max_len: maximum length of each pattern 2942 * @pattern_min_len: minimum length of each pattern 2943 * @max_pkt_offset: maximum Rx packet offset 2944 */ 2945 struct wiphy_coalesce_support { 2946 int n_rules; 2947 int max_delay; 2948 int n_patterns; 2949 int pattern_max_len; 2950 int pattern_min_len; 2951 int max_pkt_offset; 2952 }; 2953 2954 /** 2955 * enum wiphy_vendor_command_flags - validation flags for vendor commands 2956 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev 2957 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev 2958 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running 2959 * (must be combined with %_WDEV or %_NETDEV) 2960 */ 2961 enum wiphy_vendor_command_flags { 2962 WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0), 2963 WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1), 2964 WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2), 2965 }; 2966 2967 /** 2968 * struct wiphy_vendor_command - vendor command definition 2969 * @info: vendor command identifying information, as used in nl80211 2970 * @flags: flags, see &enum wiphy_vendor_command_flags 2971 * @doit: callback for the operation, note that wdev is %NULL if the 2972 * flags didn't ask for a wdev and non-%NULL otherwise; the data 2973 * pointer may be %NULL if userspace provided no data at all 2974 */ 2975 struct wiphy_vendor_command { 2976 struct nl80211_vendor_cmd_info info; 2977 u32 flags; 2978 int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev, 2979 const void *data, int data_len); 2980 }; 2981 2982 /** 2983 * struct wiphy - wireless hardware description 2984 * @reg_notifier: the driver's regulatory notification callback, 2985 * note that if your driver uses wiphy_apply_custom_regulatory() 2986 * the reg_notifier's request can be passed as NULL 2987 * @regd: the driver's regulatory domain, if one was requested via 2988 * the regulatory_hint() API. This can be used by the driver 2989 * on the reg_notifier() if it chooses to ignore future 2990 * regulatory domain changes caused by other drivers. 2991 * @signal_type: signal type reported in &struct cfg80211_bss. 2992 * @cipher_suites: supported cipher suites 2993 * @n_cipher_suites: number of supported cipher suites 2994 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 2995 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 2996 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 2997 * -1 = fragmentation disabled, only odd values >= 256 used 2998 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 2999 * @_net: the network namespace this wiphy currently lives in 3000 * @perm_addr: permanent MAC address of this device 3001 * @addr_mask: If the device supports multiple MAC addresses by masking, 3002 * set this to a mask with variable bits set to 1, e.g. if the last 3003 * four bits are variable then set it to 00-00-00-00-00-0f. The actual 3004 * variable bits shall be determined by the interfaces added, with 3005 * interfaces not matching the mask being rejected to be brought up. 3006 * @n_addresses: number of addresses in @addresses. 3007 * @addresses: If the device has more than one address, set this pointer 3008 * to a list of addresses (6 bytes each). The first one will be used 3009 * by default for perm_addr. In this case, the mask should be set to 3010 * all-zeroes. In this case it is assumed that the device can handle 3011 * the same number of arbitrary MAC addresses. 3012 * @registered: protects ->resume and ->suspend sysfs callbacks against 3013 * unregister hardware 3014 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 3015 * automatically on wiphy renames 3016 * @dev: (virtual) struct device for this wiphy 3017 * @registered: helps synchronize suspend/resume with wiphy unregister 3018 * @wext: wireless extension handlers 3019 * @priv: driver private data (sized according to wiphy_new() parameter) 3020 * @interface_modes: bitmask of interfaces types valid for this wiphy, 3021 * must be set by driver 3022 * @iface_combinations: Valid interface combinations array, should not 3023 * list single interface types. 3024 * @n_iface_combinations: number of entries in @iface_combinations array. 3025 * @software_iftypes: bitmask of software interface types, these are not 3026 * subject to any restrictions since they are purely managed in SW. 3027 * @flags: wiphy flags, see &enum wiphy_flags 3028 * @regulatory_flags: wiphy regulatory flags, see 3029 * &enum ieee80211_regulatory_flags 3030 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 3031 * @ext_features: extended features advertised to nl80211, see 3032 * &enum nl80211_ext_feature_index. 3033 * @bss_priv_size: each BSS struct has private data allocated with it, 3034 * this variable determines its size 3035 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 3036 * any given scan 3037 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 3038 * for in any given scheduled scan 3039 * @max_match_sets: maximum number of match sets the device can handle 3040 * when performing a scheduled scan, 0 if filtering is not 3041 * supported. 3042 * @max_scan_ie_len: maximum length of user-controlled IEs device can 3043 * add to probe request frames transmitted during a scan, must not 3044 * include fixed IEs like supported rates 3045 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 3046 * scans 3047 * @coverage_class: current coverage class 3048 * @fw_version: firmware version for ethtool reporting 3049 * @hw_version: hardware version for ethtool reporting 3050 * @max_num_pmkids: maximum number of PMKIDs supported by device 3051 * @privid: a pointer that drivers can use to identify if an arbitrary 3052 * wiphy is theirs, e.g. in global notifiers 3053 * @bands: information about bands/channels supported by this device 3054 * 3055 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 3056 * transmitted through nl80211, points to an array indexed by interface 3057 * type 3058 * 3059 * @available_antennas_tx: bitmap of antennas which are available to be 3060 * configured as TX antennas. Antenna configuration commands will be 3061 * rejected unless this or @available_antennas_rx is set. 3062 * 3063 * @available_antennas_rx: bitmap of antennas which are available to be 3064 * configured as RX antennas. Antenna configuration commands will be 3065 * rejected unless this or @available_antennas_tx is set. 3066 * 3067 * @probe_resp_offload: 3068 * Bitmap of supported protocols for probe response offloading. 3069 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 3070 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3071 * 3072 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 3073 * may request, if implemented. 3074 * 3075 * @wowlan: WoWLAN support information 3076 * @wowlan_config: current WoWLAN configuration; this should usually not be 3077 * used since access to it is necessarily racy, use the parameter passed 3078 * to the suspend() operation instead. 3079 * 3080 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 3081 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 3082 * If null, then none can be over-ridden. 3083 * @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden. 3084 * If null, then none can be over-ridden. 3085 * 3086 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device 3087 * supports for ACL. 3088 * 3089 * @extended_capabilities: extended capabilities supported by the driver, 3090 * additional capabilities might be supported by userspace; these are 3091 * the 802.11 extended capabilities ("Extended Capabilities element") 3092 * and are in the same format as in the information element. See 3093 * 802.11-2012 8.4.2.29 for the defined fields. 3094 * @extended_capabilities_mask: mask of the valid values 3095 * @extended_capabilities_len: length of the extended capabilities 3096 * @coalesce: packet coalescing support information 3097 * 3098 * @vendor_commands: array of vendor commands supported by the hardware 3099 * @n_vendor_commands: number of vendor commands 3100 * @vendor_events: array of vendor events supported by the hardware 3101 * @n_vendor_events: number of vendor events 3102 * 3103 * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode 3104 * (including P2P GO) or 0 to indicate no such limit is advertised. The 3105 * driver is allowed to advertise a theoretical limit that it can reach in 3106 * some cases, but may not always reach. 3107 * 3108 * @max_num_csa_counters: Number of supported csa_counters in beacons 3109 * and probe responses. This value should be set if the driver 3110 * wishes to limit the number of csa counters. Default (0) means 3111 * infinite. 3112 * @max_adj_channel_rssi_comp: max offset of between the channel on which the 3113 * frame was sent and the channel on which the frame was heard for which 3114 * the reported rssi is still valid. If a driver is able to compensate the 3115 * low rssi when a frame is heard on different channel, then it should set 3116 * this variable to the maximal offset for which it can compensate. 3117 * This value should be set in MHz. 3118 */ 3119 struct wiphy { 3120 /* assign these fields before you register the wiphy */ 3121 3122 /* permanent MAC address(es) */ 3123 u8 perm_addr[ETH_ALEN]; 3124 u8 addr_mask[ETH_ALEN]; 3125 3126 struct mac_address *addresses; 3127 3128 const struct ieee80211_txrx_stypes *mgmt_stypes; 3129 3130 const struct ieee80211_iface_combination *iface_combinations; 3131 int n_iface_combinations; 3132 u16 software_iftypes; 3133 3134 u16 n_addresses; 3135 3136 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 3137 u16 interface_modes; 3138 3139 u16 max_acl_mac_addrs; 3140 3141 u32 flags, regulatory_flags, features; 3142 u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)]; 3143 3144 u32 ap_sme_capa; 3145 3146 enum cfg80211_signal_type signal_type; 3147 3148 int bss_priv_size; 3149 u8 max_scan_ssids; 3150 u8 max_sched_scan_ssids; 3151 u8 max_match_sets; 3152 u16 max_scan_ie_len; 3153 u16 max_sched_scan_ie_len; 3154 3155 int n_cipher_suites; 3156 const u32 *cipher_suites; 3157 3158 u8 retry_short; 3159 u8 retry_long; 3160 u32 frag_threshold; 3161 u32 rts_threshold; 3162 u8 coverage_class; 3163 3164 char fw_version[ETHTOOL_FWVERS_LEN]; 3165 u32 hw_version; 3166 3167 #ifdef CONFIG_PM 3168 const struct wiphy_wowlan_support *wowlan; 3169 struct cfg80211_wowlan *wowlan_config; 3170 #endif 3171 3172 u16 max_remain_on_channel_duration; 3173 3174 u8 max_num_pmkids; 3175 3176 u32 available_antennas_tx; 3177 u32 available_antennas_rx; 3178 3179 /* 3180 * Bitmap of supported protocols for probe response offloading 3181 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 3182 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3183 */ 3184 u32 probe_resp_offload; 3185 3186 const u8 *extended_capabilities, *extended_capabilities_mask; 3187 u8 extended_capabilities_len; 3188 3189 /* If multiple wiphys are registered and you're handed e.g. 3190 * a regular netdev with assigned ieee80211_ptr, you won't 3191 * know whether it points to a wiphy your driver has registered 3192 * or not. Assign this to something global to your driver to 3193 * help determine whether you own this wiphy or not. */ 3194 const void *privid; 3195 3196 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 3197 3198 /* Lets us get back the wiphy on the callback */ 3199 void (*reg_notifier)(struct wiphy *wiphy, 3200 struct regulatory_request *request); 3201 3202 /* fields below are read-only, assigned by cfg80211 */ 3203 3204 const struct ieee80211_regdomain __rcu *regd; 3205 3206 /* the item in /sys/class/ieee80211/ points to this, 3207 * you need use set_wiphy_dev() (see below) */ 3208 struct device dev; 3209 3210 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 3211 bool registered; 3212 3213 /* dir in debugfs: ieee80211/<wiphyname> */ 3214 struct dentry *debugfsdir; 3215 3216 const struct ieee80211_ht_cap *ht_capa_mod_mask; 3217 const struct ieee80211_vht_cap *vht_capa_mod_mask; 3218 3219 /* the network namespace this phy lives in currently */ 3220 possible_net_t _net; 3221 3222 #ifdef CONFIG_CFG80211_WEXT 3223 const struct iw_handler_def *wext; 3224 #endif 3225 3226 const struct wiphy_coalesce_support *coalesce; 3227 3228 const struct wiphy_vendor_command *vendor_commands; 3229 const struct nl80211_vendor_cmd_info *vendor_events; 3230 int n_vendor_commands, n_vendor_events; 3231 3232 u16 max_ap_assoc_sta; 3233 3234 u8 max_num_csa_counters; 3235 u8 max_adj_channel_rssi_comp; 3236 3237 char priv[0] __aligned(NETDEV_ALIGN); 3238 }; 3239 3240 static inline struct net *wiphy_net(struct wiphy *wiphy) 3241 { 3242 return read_pnet(&wiphy->_net); 3243 } 3244 3245 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 3246 { 3247 write_pnet(&wiphy->_net, net); 3248 } 3249 3250 /** 3251 * wiphy_priv - return priv from wiphy 3252 * 3253 * @wiphy: the wiphy whose priv pointer to return 3254 * Return: The priv of @wiphy. 3255 */ 3256 static inline void *wiphy_priv(struct wiphy *wiphy) 3257 { 3258 BUG_ON(!wiphy); 3259 return &wiphy->priv; 3260 } 3261 3262 /** 3263 * priv_to_wiphy - return the wiphy containing the priv 3264 * 3265 * @priv: a pointer previously returned by wiphy_priv 3266 * Return: The wiphy of @priv. 3267 */ 3268 static inline struct wiphy *priv_to_wiphy(void *priv) 3269 { 3270 BUG_ON(!priv); 3271 return container_of(priv, struct wiphy, priv); 3272 } 3273 3274 /** 3275 * set_wiphy_dev - set device pointer for wiphy 3276 * 3277 * @wiphy: The wiphy whose device to bind 3278 * @dev: The device to parent it to 3279 */ 3280 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 3281 { 3282 wiphy->dev.parent = dev; 3283 } 3284 3285 /** 3286 * wiphy_dev - get wiphy dev pointer 3287 * 3288 * @wiphy: The wiphy whose device struct to look up 3289 * Return: The dev of @wiphy. 3290 */ 3291 static inline struct device *wiphy_dev(struct wiphy *wiphy) 3292 { 3293 return wiphy->dev.parent; 3294 } 3295 3296 /** 3297 * wiphy_name - get wiphy name 3298 * 3299 * @wiphy: The wiphy whose name to return 3300 * Return: The name of @wiphy. 3301 */ 3302 static inline const char *wiphy_name(const struct wiphy *wiphy) 3303 { 3304 return dev_name(&wiphy->dev); 3305 } 3306 3307 /** 3308 * wiphy_new_nm - create a new wiphy for use with cfg80211 3309 * 3310 * @ops: The configuration operations for this device 3311 * @sizeof_priv: The size of the private area to allocate 3312 * @requested_name: Request a particular name. 3313 * NULL is valid value, and means use the default phy%d naming. 3314 * 3315 * Create a new wiphy and associate the given operations with it. 3316 * @sizeof_priv bytes are allocated for private use. 3317 * 3318 * Return: A pointer to the new wiphy. This pointer must be 3319 * assigned to each netdev's ieee80211_ptr for proper operation. 3320 */ 3321 struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, 3322 const char *requested_name); 3323 3324 /** 3325 * wiphy_new - create a new wiphy for use with cfg80211 3326 * 3327 * @ops: The configuration operations for this device 3328 * @sizeof_priv: The size of the private area to allocate 3329 * 3330 * Create a new wiphy and associate the given operations with it. 3331 * @sizeof_priv bytes are allocated for private use. 3332 * 3333 * Return: A pointer to the new wiphy. This pointer must be 3334 * assigned to each netdev's ieee80211_ptr for proper operation. 3335 */ 3336 static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops, 3337 int sizeof_priv) 3338 { 3339 return wiphy_new_nm(ops, sizeof_priv, NULL); 3340 } 3341 3342 /** 3343 * wiphy_register - register a wiphy with cfg80211 3344 * 3345 * @wiphy: The wiphy to register. 3346 * 3347 * Return: A non-negative wiphy index or a negative error code. 3348 */ 3349 int wiphy_register(struct wiphy *wiphy); 3350 3351 /** 3352 * wiphy_unregister - deregister a wiphy from cfg80211 3353 * 3354 * @wiphy: The wiphy to unregister. 3355 * 3356 * After this call, no more requests can be made with this priv 3357 * pointer, but the call may sleep to wait for an outstanding 3358 * request that is being handled. 3359 */ 3360 void wiphy_unregister(struct wiphy *wiphy); 3361 3362 /** 3363 * wiphy_free - free wiphy 3364 * 3365 * @wiphy: The wiphy to free 3366 */ 3367 void wiphy_free(struct wiphy *wiphy); 3368 3369 /* internal structs */ 3370 struct cfg80211_conn; 3371 struct cfg80211_internal_bss; 3372 struct cfg80211_cached_keys; 3373 3374 /** 3375 * struct wireless_dev - wireless device state 3376 * 3377 * For netdevs, this structure must be allocated by the driver 3378 * that uses the ieee80211_ptr field in struct net_device (this 3379 * is intentional so it can be allocated along with the netdev.) 3380 * It need not be registered then as netdev registration will 3381 * be intercepted by cfg80211 to see the new wireless device. 3382 * 3383 * For non-netdev uses, it must also be allocated by the driver 3384 * in response to the cfg80211 callbacks that require it, as 3385 * there's no netdev registration in that case it may not be 3386 * allocated outside of callback operations that return it. 3387 * 3388 * @wiphy: pointer to hardware description 3389 * @iftype: interface type 3390 * @list: (private) Used to collect the interfaces 3391 * @netdev: (private) Used to reference back to the netdev, may be %NULL 3392 * @identifier: (private) Identifier used in nl80211 to identify this 3393 * wireless device if it has no netdev 3394 * @current_bss: (private) Used by the internal configuration code 3395 * @chandef: (private) Used by the internal configuration code to track 3396 * the user-set channel definition. 3397 * @preset_chandef: (private) Used by the internal configuration code to 3398 * track the channel to be used for AP later 3399 * @bssid: (private) Used by the internal configuration code 3400 * @ssid: (private) Used by the internal configuration code 3401 * @ssid_len: (private) Used by the internal configuration code 3402 * @mesh_id_len: (private) Used by the internal configuration code 3403 * @mesh_id_up_len: (private) Used by the internal configuration code 3404 * @wext: (private) Used by the internal wireless extensions compat code 3405 * @use_4addr: indicates 4addr mode is used on this interface, must be 3406 * set by driver (if supported) on add_interface BEFORE registering the 3407 * netdev and may otherwise be used by driver read-only, will be update 3408 * by cfg80211 on change_interface 3409 * @mgmt_registrations: list of registrations for management frames 3410 * @mgmt_registrations_lock: lock for the list 3411 * @mtx: mutex used to lock data in this struct, may be used by drivers 3412 * and some API functions require it held 3413 * @beacon_interval: beacon interval used on this device for transmitting 3414 * beacons, 0 when not valid 3415 * @address: The address for this device, valid only if @netdev is %NULL 3416 * @p2p_started: true if this is a P2P Device that has been started 3417 * @cac_started: true if DFS channel availability check has been started 3418 * @cac_start_time: timestamp (jiffies) when the dfs state was entered. 3419 * @cac_time_ms: CAC time in ms 3420 * @ps: powersave mode is enabled 3421 * @ps_timeout: dynamic powersave timeout 3422 * @ap_unexpected_nlportid: (private) netlink port ID of application 3423 * registered for unexpected class 3 frames (AP mode) 3424 * @conn: (private) cfg80211 software SME connection state machine data 3425 * @connect_keys: (private) keys to set after connection is established 3426 * @ibss_fixed: (private) IBSS is using fixed BSSID 3427 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel 3428 * @event_list: (private) list for internal event processing 3429 * @event_lock: (private) lock for event list 3430 * @owner_nlportid: (private) owner socket port ID 3431 */ 3432 struct wireless_dev { 3433 struct wiphy *wiphy; 3434 enum nl80211_iftype iftype; 3435 3436 /* the remainder of this struct should be private to cfg80211 */ 3437 struct list_head list; 3438 struct net_device *netdev; 3439 3440 u32 identifier; 3441 3442 struct list_head mgmt_registrations; 3443 spinlock_t mgmt_registrations_lock; 3444 3445 struct mutex mtx; 3446 3447 bool use_4addr, p2p_started; 3448 3449 u8 address[ETH_ALEN] __aligned(sizeof(u16)); 3450 3451 /* currently used for IBSS and SME - might be rearranged later */ 3452 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3453 u8 ssid_len, mesh_id_len, mesh_id_up_len; 3454 struct cfg80211_conn *conn; 3455 struct cfg80211_cached_keys *connect_keys; 3456 3457 struct list_head event_list; 3458 spinlock_t event_lock; 3459 3460 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 3461 struct cfg80211_chan_def preset_chandef; 3462 struct cfg80211_chan_def chandef; 3463 3464 bool ibss_fixed; 3465 bool ibss_dfs_possible; 3466 3467 bool ps; 3468 int ps_timeout; 3469 3470 int beacon_interval; 3471 3472 u32 ap_unexpected_nlportid; 3473 3474 bool cac_started; 3475 unsigned long cac_start_time; 3476 unsigned int cac_time_ms; 3477 3478 u32 owner_nlportid; 3479 3480 #ifdef CONFIG_CFG80211_WEXT 3481 /* wext data */ 3482 struct { 3483 struct cfg80211_ibss_params ibss; 3484 struct cfg80211_connect_params connect; 3485 struct cfg80211_cached_keys *keys; 3486 const u8 *ie; 3487 size_t ie_len; 3488 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 3489 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3490 s8 default_key, default_mgmt_key; 3491 bool prev_bssid_valid; 3492 } wext; 3493 #endif 3494 }; 3495 3496 static inline u8 *wdev_address(struct wireless_dev *wdev) 3497 { 3498 if (wdev->netdev) 3499 return wdev->netdev->dev_addr; 3500 return wdev->address; 3501 } 3502 3503 /** 3504 * wdev_priv - return wiphy priv from wireless_dev 3505 * 3506 * @wdev: The wireless device whose wiphy's priv pointer to return 3507 * Return: The wiphy priv of @wdev. 3508 */ 3509 static inline void *wdev_priv(struct wireless_dev *wdev) 3510 { 3511 BUG_ON(!wdev); 3512 return wiphy_priv(wdev->wiphy); 3513 } 3514 3515 /** 3516 * DOC: Utility functions 3517 * 3518 * cfg80211 offers a number of utility functions that can be useful. 3519 */ 3520 3521 /** 3522 * ieee80211_channel_to_frequency - convert channel number to frequency 3523 * @chan: channel number 3524 * @band: band, necessary due to channel number overlap 3525 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed. 3526 */ 3527 int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 3528 3529 /** 3530 * ieee80211_frequency_to_channel - convert frequency to channel number 3531 * @freq: center frequency 3532 * Return: The corresponding channel, or 0 if the conversion failed. 3533 */ 3534 int ieee80211_frequency_to_channel(int freq); 3535 3536 /* 3537 * Name indirection necessary because the ieee80211 code also has 3538 * a function named "ieee80211_get_channel", so if you include 3539 * cfg80211's header file you get cfg80211's version, if you try 3540 * to include both header files you'll (rightfully!) get a symbol 3541 * clash. 3542 */ 3543 struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 3544 int freq); 3545 /** 3546 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 3547 * @wiphy: the struct wiphy to get the channel for 3548 * @freq: the center frequency of the channel 3549 * Return: The channel struct from @wiphy at @freq. 3550 */ 3551 static inline struct ieee80211_channel * 3552 ieee80211_get_channel(struct wiphy *wiphy, int freq) 3553 { 3554 return __ieee80211_get_channel(wiphy, freq); 3555 } 3556 3557 /** 3558 * ieee80211_get_response_rate - get basic rate for a given rate 3559 * 3560 * @sband: the band to look for rates in 3561 * @basic_rates: bitmap of basic rates 3562 * @bitrate: the bitrate for which to find the basic rate 3563 * 3564 * Return: The basic rate corresponding to a given bitrate, that 3565 * is the next lower bitrate contained in the basic rate map, 3566 * which is, for this function, given as a bitmap of indices of 3567 * rates in the band's bitrate table. 3568 */ 3569 struct ieee80211_rate * 3570 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 3571 u32 basic_rates, int bitrate); 3572 3573 /** 3574 * ieee80211_mandatory_rates - get mandatory rates for a given band 3575 * @sband: the band to look for rates in 3576 * @scan_width: width of the control channel 3577 * 3578 * This function returns a bitmap of the mandatory rates for the given 3579 * band, bits are set according to the rate position in the bitrates array. 3580 */ 3581 u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, 3582 enum nl80211_bss_scan_width scan_width); 3583 3584 /* 3585 * Radiotap parsing functions -- for controlled injection support 3586 * 3587 * Implemented in net/wireless/radiotap.c 3588 * Documentation in Documentation/networking/radiotap-headers.txt 3589 */ 3590 3591 struct radiotap_align_size { 3592 uint8_t align:4, size:4; 3593 }; 3594 3595 struct ieee80211_radiotap_namespace { 3596 const struct radiotap_align_size *align_size; 3597 int n_bits; 3598 uint32_t oui; 3599 uint8_t subns; 3600 }; 3601 3602 struct ieee80211_radiotap_vendor_namespaces { 3603 const struct ieee80211_radiotap_namespace *ns; 3604 int n_ns; 3605 }; 3606 3607 /** 3608 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 3609 * @this_arg_index: index of current arg, valid after each successful call 3610 * to ieee80211_radiotap_iterator_next() 3611 * @this_arg: pointer to current radiotap arg; it is valid after each 3612 * call to ieee80211_radiotap_iterator_next() but also after 3613 * ieee80211_radiotap_iterator_init() where it will point to 3614 * the beginning of the actual data portion 3615 * @this_arg_size: length of the current arg, for convenience 3616 * @current_namespace: pointer to the current namespace definition 3617 * (or internally %NULL if the current namespace is unknown) 3618 * @is_radiotap_ns: indicates whether the current namespace is the default 3619 * radiotap namespace or not 3620 * 3621 * @_rtheader: pointer to the radiotap header we are walking through 3622 * @_max_length: length of radiotap header in cpu byte ordering 3623 * @_arg_index: next argument index 3624 * @_arg: next argument pointer 3625 * @_next_bitmap: internal pointer to next present u32 3626 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 3627 * @_vns: vendor namespace definitions 3628 * @_next_ns_data: beginning of the next namespace's data 3629 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 3630 * next bitmap word 3631 * 3632 * Describes the radiotap parser state. Fields prefixed with an underscore 3633 * must not be used by users of the parser, only by the parser internally. 3634 */ 3635 3636 struct ieee80211_radiotap_iterator { 3637 struct ieee80211_radiotap_header *_rtheader; 3638 const struct ieee80211_radiotap_vendor_namespaces *_vns; 3639 const struct ieee80211_radiotap_namespace *current_namespace; 3640 3641 unsigned char *_arg, *_next_ns_data; 3642 __le32 *_next_bitmap; 3643 3644 unsigned char *this_arg; 3645 int this_arg_index; 3646 int this_arg_size; 3647 3648 int is_radiotap_ns; 3649 3650 int _max_length; 3651 int _arg_index; 3652 uint32_t _bitmap_shifter; 3653 int _reset_on_ext; 3654 }; 3655 3656 int 3657 ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator, 3658 struct ieee80211_radiotap_header *radiotap_header, 3659 int max_length, 3660 const struct ieee80211_radiotap_vendor_namespaces *vns); 3661 3662 int 3663 ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator); 3664 3665 3666 extern const unsigned char rfc1042_header[6]; 3667 extern const unsigned char bridge_tunnel_header[6]; 3668 3669 /** 3670 * ieee80211_get_hdrlen_from_skb - get header length from data 3671 * 3672 * @skb: the frame 3673 * 3674 * Given an skb with a raw 802.11 header at the data pointer this function 3675 * returns the 802.11 header length. 3676 * 3677 * Return: The 802.11 header length in bytes (not including encryption 3678 * headers). Or 0 if the data in the sk_buff is too short to contain a valid 3679 * 802.11 header. 3680 */ 3681 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 3682 3683 /** 3684 * ieee80211_hdrlen - get header length in bytes from frame control 3685 * @fc: frame control field in little-endian format 3686 * Return: The header length in bytes. 3687 */ 3688 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 3689 3690 /** 3691 * ieee80211_get_mesh_hdrlen - get mesh extension header length 3692 * @meshhdr: the mesh extension header, only the flags field 3693 * (first byte) will be accessed 3694 * Return: The length of the extension header, which is always at 3695 * least 6 bytes and at most 18 if address 5 and 6 are present. 3696 */ 3697 unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); 3698 3699 /** 3700 * DOC: Data path helpers 3701 * 3702 * In addition to generic utilities, cfg80211 also offers 3703 * functions that help implement the data path for devices 3704 * that do not do the 802.11/802.3 conversion on the device. 3705 */ 3706 3707 /** 3708 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 3709 * @skb: the 802.11 data frame 3710 * @addr: the device MAC address 3711 * @iftype: the virtual interface type 3712 * Return: 0 on success. Non-zero on error. 3713 */ 3714 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 3715 enum nl80211_iftype iftype); 3716 3717 /** 3718 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 3719 * @skb: the 802.3 frame 3720 * @addr: the device MAC address 3721 * @iftype: the virtual interface type 3722 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 3723 * @qos: build 802.11 QoS data frame 3724 * Return: 0 on success, or a negative error code. 3725 */ 3726 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 3727 enum nl80211_iftype iftype, const u8 *bssid, 3728 bool qos); 3729 3730 /** 3731 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 3732 * 3733 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 3734 * 802.3 frames. The @list will be empty if the decode fails. The 3735 * @skb is consumed after the function returns. 3736 * 3737 * @skb: The input IEEE 802.11n A-MSDU frame. 3738 * @list: The output list of 802.3 frames. It must be allocated and 3739 * initialized by by the caller. 3740 * @addr: The device MAC address. 3741 * @iftype: The device interface type. 3742 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 3743 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 3744 */ 3745 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 3746 const u8 *addr, enum nl80211_iftype iftype, 3747 const unsigned int extra_headroom, 3748 bool has_80211_header); 3749 3750 /** 3751 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 3752 * @skb: the data frame 3753 * @qos_map: Interworking QoS mapping or %NULL if not in use 3754 * Return: The 802.1p/1d tag. 3755 */ 3756 unsigned int cfg80211_classify8021d(struct sk_buff *skb, 3757 struct cfg80211_qos_map *qos_map); 3758 3759 /** 3760 * cfg80211_find_ie - find information element in data 3761 * 3762 * @eid: element ID 3763 * @ies: data consisting of IEs 3764 * @len: length of data 3765 * 3766 * Return: %NULL if the element ID could not be found or if 3767 * the element is invalid (claims to be longer than the given 3768 * data), or a pointer to the first byte of the requested 3769 * element, that is the byte containing the element ID. 3770 * 3771 * Note: There are no checks on the element length other than 3772 * having to fit into the given data. 3773 */ 3774 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 3775 3776 /** 3777 * cfg80211_find_vendor_ie - find vendor specific information element in data 3778 * 3779 * @oui: vendor OUI 3780 * @oui_type: vendor-specific OUI type 3781 * @ies: data consisting of IEs 3782 * @len: length of data 3783 * 3784 * Return: %NULL if the vendor specific element ID could not be found or if the 3785 * element is invalid (claims to be longer than the given data), or a pointer to 3786 * the first byte of the requested element, that is the byte containing the 3787 * element ID. 3788 * 3789 * Note: There are no checks on the element length other than having to fit into 3790 * the given data. 3791 */ 3792 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 3793 const u8 *ies, int len); 3794 3795 /** 3796 * DOC: Regulatory enforcement infrastructure 3797 * 3798 * TODO 3799 */ 3800 3801 /** 3802 * regulatory_hint - driver hint to the wireless core a regulatory domain 3803 * @wiphy: the wireless device giving the hint (used only for reporting 3804 * conflicts) 3805 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 3806 * should be in. If @rd is set this should be NULL. Note that if you 3807 * set this to NULL you should still set rd->alpha2 to some accepted 3808 * alpha2. 3809 * 3810 * Wireless drivers can use this function to hint to the wireless core 3811 * what it believes should be the current regulatory domain by 3812 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 3813 * domain should be in or by providing a completely build regulatory domain. 3814 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 3815 * for a regulatory domain structure for the respective country. 3816 * 3817 * The wiphy must have been registered to cfg80211 prior to this call. 3818 * For cfg80211 drivers this means you must first use wiphy_register(), 3819 * for mac80211 drivers you must first use ieee80211_register_hw(). 3820 * 3821 * Drivers should check the return value, its possible you can get 3822 * an -ENOMEM. 3823 * 3824 * Return: 0 on success. -ENOMEM. 3825 */ 3826 int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 3827 3828 /** 3829 * regulatory_set_wiphy_regd - set regdom info for self managed drivers 3830 * @wiphy: the wireless device we want to process the regulatory domain on 3831 * @rd: the regulatory domain informatoin to use for this wiphy 3832 * 3833 * Set the regulatory domain information for self-managed wiphys, only they 3834 * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more 3835 * information. 3836 * 3837 * Return: 0 on success. -EINVAL, -EPERM 3838 */ 3839 int regulatory_set_wiphy_regd(struct wiphy *wiphy, 3840 struct ieee80211_regdomain *rd); 3841 3842 /** 3843 * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers 3844 * @wiphy: the wireless device we want to process the regulatory domain on 3845 * @rd: the regulatory domain information to use for this wiphy 3846 * 3847 * This functions requires the RTNL to be held and applies the new regdomain 3848 * synchronously to this wiphy. For more details see 3849 * regulatory_set_wiphy_regd(). 3850 * 3851 * Return: 0 on success. -EINVAL, -EPERM 3852 */ 3853 int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, 3854 struct ieee80211_regdomain *rd); 3855 3856 /** 3857 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 3858 * @wiphy: the wireless device we want to process the regulatory domain on 3859 * @regd: the custom regulatory domain to use for this wiphy 3860 * 3861 * Drivers can sometimes have custom regulatory domains which do not apply 3862 * to a specific country. Drivers can use this to apply such custom regulatory 3863 * domains. This routine must be called prior to wiphy registration. The 3864 * custom regulatory domain will be trusted completely and as such previous 3865 * default channel settings will be disregarded. If no rule is found for a 3866 * channel on the regulatory domain the channel will be disabled. 3867 * Drivers using this for a wiphy should also set the wiphy flag 3868 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy 3869 * that called this helper. 3870 */ 3871 void wiphy_apply_custom_regulatory(struct wiphy *wiphy, 3872 const struct ieee80211_regdomain *regd); 3873 3874 /** 3875 * freq_reg_info - get regulatory information for the given frequency 3876 * @wiphy: the wiphy for which we want to process this rule for 3877 * @center_freq: Frequency in KHz for which we want regulatory information for 3878 * 3879 * Use this function to get the regulatory rule for a specific frequency on 3880 * a given wireless device. If the device has a specific regulatory domain 3881 * it wants to follow we respect that unless a country IE has been received 3882 * and processed already. 3883 * 3884 * Return: A valid pointer, or, when an error occurs, for example if no rule 3885 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to 3886 * check and PTR_ERR() to obtain the numeric return value. The numeric return 3887 * value will be -ERANGE if we determine the given center_freq does not even 3888 * have a regulatory rule for a frequency range in the center_freq's band. 3889 * See freq_in_rule_band() for our current definition of a band -- this is 3890 * purely subjective and right now it's 802.11 specific. 3891 */ 3892 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, 3893 u32 center_freq); 3894 3895 /** 3896 * reg_initiator_name - map regulatory request initiator enum to name 3897 * @initiator: the regulatory request initiator 3898 * 3899 * You can use this to map the regulatory request initiator enum to a 3900 * proper string representation. 3901 */ 3902 const char *reg_initiator_name(enum nl80211_reg_initiator initiator); 3903 3904 /* 3905 * callbacks for asynchronous cfg80211 methods, notification 3906 * functions and BSS handling helpers 3907 */ 3908 3909 /** 3910 * cfg80211_scan_done - notify that scan finished 3911 * 3912 * @request: the corresponding scan request 3913 * @aborted: set to true if the scan was aborted for any reason, 3914 * userspace will be notified of that 3915 */ 3916 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 3917 3918 /** 3919 * cfg80211_sched_scan_results - notify that new scan results are available 3920 * 3921 * @wiphy: the wiphy which got scheduled scan results 3922 */ 3923 void cfg80211_sched_scan_results(struct wiphy *wiphy); 3924 3925 /** 3926 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 3927 * 3928 * @wiphy: the wiphy on which the scheduled scan stopped 3929 * 3930 * The driver can call this function to inform cfg80211 that the 3931 * scheduled scan had to be stopped, for whatever reason. The driver 3932 * is then called back via the sched_scan_stop operation when done. 3933 */ 3934 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 3935 3936 /** 3937 * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped 3938 * 3939 * @wiphy: the wiphy on which the scheduled scan stopped 3940 * 3941 * The driver can call this function to inform cfg80211 that the 3942 * scheduled scan had to be stopped, for whatever reason. The driver 3943 * is then called back via the sched_scan_stop operation when done. 3944 * This function should be called with rtnl locked. 3945 */ 3946 void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy); 3947 3948 /** 3949 * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame 3950 * 3951 * @wiphy: the wiphy reporting the BSS 3952 * @rx_channel: The channel the frame was received on 3953 * @scan_width: width of the control channel 3954 * @mgmt: the management frame (probe response or beacon) 3955 * @len: length of the management frame 3956 * @signal: the signal strength, type depends on the wiphy's signal_type 3957 * @gfp: context flags 3958 * 3959 * This informs cfg80211 that BSS information was found and 3960 * the BSS should be updated/added. 3961 * 3962 * Return: A referenced struct, must be released with cfg80211_put_bss()! 3963 * Or %NULL on error. 3964 */ 3965 struct cfg80211_bss * __must_check 3966 cfg80211_inform_bss_width_frame(struct wiphy *wiphy, 3967 struct ieee80211_channel *rx_channel, 3968 enum nl80211_bss_scan_width scan_width, 3969 struct ieee80211_mgmt *mgmt, size_t len, 3970 s32 signal, gfp_t gfp); 3971 3972 static inline struct cfg80211_bss * __must_check 3973 cfg80211_inform_bss_frame(struct wiphy *wiphy, 3974 struct ieee80211_channel *rx_channel, 3975 struct ieee80211_mgmt *mgmt, size_t len, 3976 s32 signal, gfp_t gfp) 3977 { 3978 return cfg80211_inform_bss_width_frame(wiphy, rx_channel, 3979 NL80211_BSS_CHAN_WIDTH_20, 3980 mgmt, len, signal, gfp); 3981 } 3982 3983 /** 3984 * enum cfg80211_bss_frame_type - frame type that the BSS data came from 3985 * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is 3986 * from a beacon or probe response 3987 * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon 3988 * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response 3989 */ 3990 enum cfg80211_bss_frame_type { 3991 CFG80211_BSS_FTYPE_UNKNOWN, 3992 CFG80211_BSS_FTYPE_BEACON, 3993 CFG80211_BSS_FTYPE_PRESP, 3994 }; 3995 3996 /** 3997 * cfg80211_inform_bss_width - inform cfg80211 of a new BSS 3998 * 3999 * @wiphy: the wiphy reporting the BSS 4000 * @rx_channel: The channel the frame was received on 4001 * @scan_width: width of the control channel 4002 * @ftype: frame type (if known) 4003 * @bssid: the BSSID of the BSS 4004 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 4005 * @capability: the capability field sent by the peer 4006 * @beacon_interval: the beacon interval announced by the peer 4007 * @ie: additional IEs sent by the peer 4008 * @ielen: length of the additional IEs 4009 * @signal: the signal strength, type depends on the wiphy's signal_type 4010 * @gfp: context flags 4011 * 4012 * This informs cfg80211 that BSS information was found and 4013 * the BSS should be updated/added. 4014 * 4015 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4016 * Or %NULL on error. 4017 */ 4018 struct cfg80211_bss * __must_check 4019 cfg80211_inform_bss_width(struct wiphy *wiphy, 4020 struct ieee80211_channel *rx_channel, 4021 enum nl80211_bss_scan_width scan_width, 4022 enum cfg80211_bss_frame_type ftype, 4023 const u8 *bssid, u64 tsf, u16 capability, 4024 u16 beacon_interval, const u8 *ie, size_t ielen, 4025 s32 signal, gfp_t gfp); 4026 4027 static inline struct cfg80211_bss * __must_check 4028 cfg80211_inform_bss(struct wiphy *wiphy, 4029 struct ieee80211_channel *rx_channel, 4030 enum cfg80211_bss_frame_type ftype, 4031 const u8 *bssid, u64 tsf, u16 capability, 4032 u16 beacon_interval, const u8 *ie, size_t ielen, 4033 s32 signal, gfp_t gfp) 4034 { 4035 return cfg80211_inform_bss_width(wiphy, rx_channel, 4036 NL80211_BSS_CHAN_WIDTH_20, ftype, 4037 bssid, tsf, capability, 4038 beacon_interval, ie, ielen, signal, 4039 gfp); 4040 } 4041 4042 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 4043 struct ieee80211_channel *channel, 4044 const u8 *bssid, 4045 const u8 *ssid, size_t ssid_len, 4046 enum ieee80211_bss_type bss_type, 4047 enum ieee80211_privacy); 4048 static inline struct cfg80211_bss * 4049 cfg80211_get_ibss(struct wiphy *wiphy, 4050 struct ieee80211_channel *channel, 4051 const u8 *ssid, size_t ssid_len) 4052 { 4053 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 4054 IEEE80211_BSS_TYPE_IBSS, 4055 IEEE80211_PRIVACY_ANY); 4056 } 4057 4058 /** 4059 * cfg80211_ref_bss - reference BSS struct 4060 * @wiphy: the wiphy this BSS struct belongs to 4061 * @bss: the BSS struct to reference 4062 * 4063 * Increments the refcount of the given BSS struct. 4064 */ 4065 void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4066 4067 /** 4068 * cfg80211_put_bss - unref BSS struct 4069 * @wiphy: the wiphy this BSS struct belongs to 4070 * @bss: the BSS struct 4071 * 4072 * Decrements the refcount of the given BSS struct. 4073 */ 4074 void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4075 4076 /** 4077 * cfg80211_unlink_bss - unlink BSS from internal data structures 4078 * @wiphy: the wiphy 4079 * @bss: the bss to remove 4080 * 4081 * This function removes the given BSS from the internal data structures 4082 * thereby making it no longer show up in scan results etc. Use this 4083 * function when you detect a BSS is gone. Normally BSSes will also time 4084 * out, so it is not necessary to use this function at all. 4085 */ 4086 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4087 4088 static inline enum nl80211_bss_scan_width 4089 cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef) 4090 { 4091 switch (chandef->width) { 4092 case NL80211_CHAN_WIDTH_5: 4093 return NL80211_BSS_CHAN_WIDTH_5; 4094 case NL80211_CHAN_WIDTH_10: 4095 return NL80211_BSS_CHAN_WIDTH_10; 4096 default: 4097 return NL80211_BSS_CHAN_WIDTH_20; 4098 } 4099 } 4100 4101 /** 4102 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame 4103 * @dev: network device 4104 * @buf: authentication frame (header + body) 4105 * @len: length of the frame data 4106 * 4107 * This function is called whenever an authentication, disassociation or 4108 * deauthentication frame has been received and processed in station mode. 4109 * After being asked to authenticate via cfg80211_ops::auth() the driver must 4110 * call either this function or cfg80211_auth_timeout(). 4111 * After being asked to associate via cfg80211_ops::assoc() the driver must 4112 * call either this function or cfg80211_auth_timeout(). 4113 * While connected, the driver must calls this for received and processed 4114 * disassociation and deauthentication frames. If the frame couldn't be used 4115 * because it was unprotected, the driver must call the function 4116 * cfg80211_rx_unprot_mlme_mgmt() instead. 4117 * 4118 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4119 */ 4120 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4121 4122 /** 4123 * cfg80211_auth_timeout - notification of timed out authentication 4124 * @dev: network device 4125 * @addr: The MAC address of the device with which the authentication timed out 4126 * 4127 * This function may sleep. The caller must hold the corresponding wdev's 4128 * mutex. 4129 */ 4130 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); 4131 4132 /** 4133 * cfg80211_rx_assoc_resp - notification of processed association response 4134 * @dev: network device 4135 * @bss: the BSS that association was requested with, ownership of the pointer 4136 * moves to cfg80211 in this call 4137 * @buf: authentication frame (header + body) 4138 * @len: length of the frame data 4139 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a. 4140 * 4141 * After being asked to associate via cfg80211_ops::assoc() the driver must 4142 * call either this function or cfg80211_auth_timeout(). 4143 * 4144 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4145 */ 4146 void cfg80211_rx_assoc_resp(struct net_device *dev, 4147 struct cfg80211_bss *bss, 4148 const u8 *buf, size_t len, 4149 int uapsd_queues); 4150 4151 /** 4152 * cfg80211_assoc_timeout - notification of timed out association 4153 * @dev: network device 4154 * @bss: The BSS entry with which association timed out. 4155 * 4156 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4157 */ 4158 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss); 4159 4160 /** 4161 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame 4162 * @dev: network device 4163 * @buf: 802.11 frame (header + body) 4164 * @len: length of the frame data 4165 * 4166 * This function is called whenever deauthentication has been processed in 4167 * station mode. This includes both received deauthentication frames and 4168 * locally generated ones. This function may sleep. The caller must hold the 4169 * corresponding wdev's mutex. 4170 */ 4171 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4172 4173 /** 4174 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame 4175 * @dev: network device 4176 * @buf: deauthentication frame (header + body) 4177 * @len: length of the frame data 4178 * 4179 * This function is called whenever a received deauthentication or dissassoc 4180 * frame has been dropped in station mode because of MFP being used but the 4181 * frame was not protected. This function may sleep. 4182 */ 4183 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, 4184 const u8 *buf, size_t len); 4185 4186 /** 4187 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 4188 * @dev: network device 4189 * @addr: The source MAC address of the frame 4190 * @key_type: The key type that the received frame used 4191 * @key_id: Key identifier (0..3). Can be -1 if missing. 4192 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 4193 * @gfp: allocation flags 4194 * 4195 * This function is called whenever the local MAC detects a MIC failure in a 4196 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 4197 * primitive. 4198 */ 4199 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 4200 enum nl80211_key_type key_type, int key_id, 4201 const u8 *tsc, gfp_t gfp); 4202 4203 /** 4204 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 4205 * 4206 * @dev: network device 4207 * @bssid: the BSSID of the IBSS joined 4208 * @channel: the channel of the IBSS joined 4209 * @gfp: allocation flags 4210 * 4211 * This function notifies cfg80211 that the device joined an IBSS or 4212 * switched to a different BSSID. Before this function can be called, 4213 * either a beacon has to have been received from the IBSS, or one of 4214 * the cfg80211_inform_bss{,_frame} functions must have been called 4215 * with the locally generated beacon -- this guarantees that there is 4216 * always a scan result for this IBSS. cfg80211 will handle the rest. 4217 */ 4218 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, 4219 struct ieee80211_channel *channel, gfp_t gfp); 4220 4221 /** 4222 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 4223 * 4224 * @dev: network device 4225 * @macaddr: the MAC address of the new candidate 4226 * @ie: information elements advertised by the peer candidate 4227 * @ie_len: lenght of the information elements buffer 4228 * @gfp: allocation flags 4229 * 4230 * This function notifies cfg80211 that the mesh peer candidate has been 4231 * detected, most likely via a beacon or, less likely, via a probe response. 4232 * cfg80211 then sends a notification to userspace. 4233 */ 4234 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 4235 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 4236 4237 /** 4238 * DOC: RFkill integration 4239 * 4240 * RFkill integration in cfg80211 is almost invisible to drivers, 4241 * as cfg80211 automatically registers an rfkill instance for each 4242 * wireless device it knows about. Soft kill is also translated 4243 * into disconnecting and turning all interfaces off, drivers are 4244 * expected to turn off the device when all interfaces are down. 4245 * 4246 * However, devices may have a hard RFkill line, in which case they 4247 * also need to interact with the rfkill subsystem, via cfg80211. 4248 * They can do this with a few helper functions documented here. 4249 */ 4250 4251 /** 4252 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 4253 * @wiphy: the wiphy 4254 * @blocked: block status 4255 */ 4256 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 4257 4258 /** 4259 * wiphy_rfkill_start_polling - start polling rfkill 4260 * @wiphy: the wiphy 4261 */ 4262 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 4263 4264 /** 4265 * wiphy_rfkill_stop_polling - stop polling rfkill 4266 * @wiphy: the wiphy 4267 */ 4268 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 4269 4270 /** 4271 * DOC: Vendor commands 4272 * 4273 * Occasionally, there are special protocol or firmware features that 4274 * can't be implemented very openly. For this and similar cases, the 4275 * vendor command functionality allows implementing the features with 4276 * (typically closed-source) userspace and firmware, using nl80211 as 4277 * the configuration mechanism. 4278 * 4279 * A driver supporting vendor commands must register them as an array 4280 * in struct wiphy, with handlers for each one, each command has an 4281 * OUI and sub command ID to identify it. 4282 * 4283 * Note that this feature should not be (ab)used to implement protocol 4284 * features that could openly be shared across drivers. In particular, 4285 * it must never be required to use vendor commands to implement any 4286 * "normal" functionality that higher-level userspace like connection 4287 * managers etc. need. 4288 */ 4289 4290 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 4291 enum nl80211_commands cmd, 4292 enum nl80211_attrs attr, 4293 int approxlen); 4294 4295 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 4296 struct wireless_dev *wdev, 4297 enum nl80211_commands cmd, 4298 enum nl80211_attrs attr, 4299 int vendor_event_idx, 4300 int approxlen, gfp_t gfp); 4301 4302 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp); 4303 4304 /** 4305 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply 4306 * @wiphy: the wiphy 4307 * @approxlen: an upper bound of the length of the data that will 4308 * be put into the skb 4309 * 4310 * This function allocates and pre-fills an skb for a reply to 4311 * a vendor command. Since it is intended for a reply, calling 4312 * it outside of a vendor command's doit() operation is invalid. 4313 * 4314 * The returned skb is pre-filled with some identifying data in 4315 * a way that any data that is put into the skb (with skb_put(), 4316 * nla_put() or similar) will end up being within the 4317 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done 4318 * with the skb is adding data for the corresponding userspace tool 4319 * which can then read that data out of the vendor data attribute. 4320 * You must not modify the skb in any other way. 4321 * 4322 * When done, call cfg80211_vendor_cmd_reply() with the skb and return 4323 * its error code as the result of the doit() operation. 4324 * 4325 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4326 */ 4327 static inline struct sk_buff * 4328 cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4329 { 4330 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR, 4331 NL80211_ATTR_VENDOR_DATA, approxlen); 4332 } 4333 4334 /** 4335 * cfg80211_vendor_cmd_reply - send the reply skb 4336 * @skb: The skb, must have been allocated with 4337 * cfg80211_vendor_cmd_alloc_reply_skb() 4338 * 4339 * Since calling this function will usually be the last thing 4340 * before returning from the vendor command doit() you should 4341 * return the error code. Note that this function consumes the 4342 * skb regardless of the return value. 4343 * 4344 * Return: An error code or 0 on success. 4345 */ 4346 int cfg80211_vendor_cmd_reply(struct sk_buff *skb); 4347 4348 /** 4349 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb 4350 * @wiphy: the wiphy 4351 * @wdev: the wireless device 4352 * @event_idx: index of the vendor event in the wiphy's vendor_events 4353 * @approxlen: an upper bound of the length of the data that will 4354 * be put into the skb 4355 * @gfp: allocation flags 4356 * 4357 * This function allocates and pre-fills an skb for an event on the 4358 * vendor-specific multicast group. 4359 * 4360 * If wdev != NULL, both the ifindex and identifier of the specified 4361 * wireless device are added to the event message before the vendor data 4362 * attribute. 4363 * 4364 * When done filling the skb, call cfg80211_vendor_event() with the 4365 * skb to send the event. 4366 * 4367 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4368 */ 4369 static inline struct sk_buff * 4370 cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev, 4371 int approxlen, int event_idx, gfp_t gfp) 4372 { 4373 return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR, 4374 NL80211_ATTR_VENDOR_DATA, 4375 event_idx, approxlen, gfp); 4376 } 4377 4378 /** 4379 * cfg80211_vendor_event - send the event 4380 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc() 4381 * @gfp: allocation flags 4382 * 4383 * This function sends the given @skb, which must have been allocated 4384 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it. 4385 */ 4386 static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp) 4387 { 4388 __cfg80211_send_event_skb(skb, gfp); 4389 } 4390 4391 #ifdef CONFIG_NL80211_TESTMODE 4392 /** 4393 * DOC: Test mode 4394 * 4395 * Test mode is a set of utility functions to allow drivers to 4396 * interact with driver-specific tools to aid, for instance, 4397 * factory programming. 4398 * 4399 * This chapter describes how drivers interact with it, for more 4400 * information see the nl80211 book's chapter on it. 4401 */ 4402 4403 /** 4404 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 4405 * @wiphy: the wiphy 4406 * @approxlen: an upper bound of the length of the data that will 4407 * be put into the skb 4408 * 4409 * This function allocates and pre-fills an skb for a reply to 4410 * the testmode command. Since it is intended for a reply, calling 4411 * it outside of the @testmode_cmd operation is invalid. 4412 * 4413 * The returned skb is pre-filled with the wiphy index and set up in 4414 * a way that any data that is put into the skb (with skb_put(), 4415 * nla_put() or similar) will end up being within the 4416 * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done 4417 * with the skb is adding data for the corresponding userspace tool 4418 * which can then read that data out of the testdata attribute. You 4419 * must not modify the skb in any other way. 4420 * 4421 * When done, call cfg80211_testmode_reply() with the skb and return 4422 * its error code as the result of the @testmode_cmd operation. 4423 * 4424 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4425 */ 4426 static inline struct sk_buff * 4427 cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4428 { 4429 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE, 4430 NL80211_ATTR_TESTDATA, approxlen); 4431 } 4432 4433 /** 4434 * cfg80211_testmode_reply - send the reply skb 4435 * @skb: The skb, must have been allocated with 4436 * cfg80211_testmode_alloc_reply_skb() 4437 * 4438 * Since calling this function will usually be the last thing 4439 * before returning from the @testmode_cmd you should return 4440 * the error code. Note that this function consumes the skb 4441 * regardless of the return value. 4442 * 4443 * Return: An error code or 0 on success. 4444 */ 4445 static inline int cfg80211_testmode_reply(struct sk_buff *skb) 4446 { 4447 return cfg80211_vendor_cmd_reply(skb); 4448 } 4449 4450 /** 4451 * cfg80211_testmode_alloc_event_skb - allocate testmode event 4452 * @wiphy: the wiphy 4453 * @approxlen: an upper bound of the length of the data that will 4454 * be put into the skb 4455 * @gfp: allocation flags 4456 * 4457 * This function allocates and pre-fills an skb for an event on the 4458 * testmode multicast group. 4459 * 4460 * The returned skb is set up in the same way as with 4461 * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As 4462 * there, you should simply add data to it that will then end up in the 4463 * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb 4464 * in any other way. 4465 * 4466 * When done filling the skb, call cfg80211_testmode_event() with the 4467 * skb to send the event. 4468 * 4469 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4470 */ 4471 static inline struct sk_buff * 4472 cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp) 4473 { 4474 return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE, 4475 NL80211_ATTR_TESTDATA, -1, 4476 approxlen, gfp); 4477 } 4478 4479 /** 4480 * cfg80211_testmode_event - send the event 4481 * @skb: The skb, must have been allocated with 4482 * cfg80211_testmode_alloc_event_skb() 4483 * @gfp: allocation flags 4484 * 4485 * This function sends the given @skb, which must have been allocated 4486 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 4487 * consumes it. 4488 */ 4489 static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4490 { 4491 __cfg80211_send_event_skb(skb, gfp); 4492 } 4493 4494 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 4495 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 4496 #else 4497 #define CFG80211_TESTMODE_CMD(cmd) 4498 #define CFG80211_TESTMODE_DUMP(cmd) 4499 #endif 4500 4501 /** 4502 * cfg80211_connect_result - notify cfg80211 of connection result 4503 * 4504 * @dev: network device 4505 * @bssid: the BSSID of the AP 4506 * @req_ie: association request IEs (maybe be %NULL) 4507 * @req_ie_len: association request IEs length 4508 * @resp_ie: association response IEs (may be %NULL) 4509 * @resp_ie_len: assoc response IEs length 4510 * @status: status code, 0 for successful connection, use 4511 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 4512 * the real status code for failures. 4513 * @gfp: allocation flags 4514 * 4515 * It should be called by the underlying driver whenever connect() has 4516 * succeeded. 4517 */ 4518 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 4519 const u8 *req_ie, size_t req_ie_len, 4520 const u8 *resp_ie, size_t resp_ie_len, 4521 u16 status, gfp_t gfp); 4522 4523 /** 4524 * cfg80211_roamed - notify cfg80211 of roaming 4525 * 4526 * @dev: network device 4527 * @channel: the channel of the new AP 4528 * @bssid: the BSSID of the new AP 4529 * @req_ie: association request IEs (maybe be %NULL) 4530 * @req_ie_len: association request IEs length 4531 * @resp_ie: association response IEs (may be %NULL) 4532 * @resp_ie_len: assoc response IEs length 4533 * @gfp: allocation flags 4534 * 4535 * It should be called by the underlying driver whenever it roamed 4536 * from one AP to another while connected. 4537 */ 4538 void cfg80211_roamed(struct net_device *dev, 4539 struct ieee80211_channel *channel, 4540 const u8 *bssid, 4541 const u8 *req_ie, size_t req_ie_len, 4542 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4543 4544 /** 4545 * cfg80211_roamed_bss - notify cfg80211 of roaming 4546 * 4547 * @dev: network device 4548 * @bss: entry of bss to which STA got roamed 4549 * @req_ie: association request IEs (maybe be %NULL) 4550 * @req_ie_len: association request IEs length 4551 * @resp_ie: association response IEs (may be %NULL) 4552 * @resp_ie_len: assoc response IEs length 4553 * @gfp: allocation flags 4554 * 4555 * This is just a wrapper to notify cfg80211 of roaming event with driver 4556 * passing bss to avoid a race in timeout of the bss entry. It should be 4557 * called by the underlying driver whenever it roamed from one AP to another 4558 * while connected. Drivers which have roaming implemented in firmware 4559 * may use this function to avoid a race in bss entry timeout where the bss 4560 * entry of the new AP is seen in the driver, but gets timed out by the time 4561 * it is accessed in __cfg80211_roamed() due to delay in scheduling 4562 * rdev->event_work. In case of any failures, the reference is released 4563 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 4564 * it will be released while diconneting from the current bss. 4565 */ 4566 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 4567 const u8 *req_ie, size_t req_ie_len, 4568 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4569 4570 /** 4571 * cfg80211_disconnected - notify cfg80211 that connection was dropped 4572 * 4573 * @dev: network device 4574 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 4575 * @ie_len: length of IEs 4576 * @reason: reason code for the disconnection, set it to 0 if unknown 4577 * @locally_generated: disconnection was requested locally 4578 * @gfp: allocation flags 4579 * 4580 * After it calls this function, the driver should enter an idle state 4581 * and not try to connect to any AP any more. 4582 */ 4583 void cfg80211_disconnected(struct net_device *dev, u16 reason, 4584 const u8 *ie, size_t ie_len, 4585 bool locally_generated, gfp_t gfp); 4586 4587 /** 4588 * cfg80211_ready_on_channel - notification of remain_on_channel start 4589 * @wdev: wireless device 4590 * @cookie: the request cookie 4591 * @chan: The current channel (from remain_on_channel request) 4592 * @duration: Duration in milliseconds that the driver intents to remain on the 4593 * channel 4594 * @gfp: allocation flags 4595 */ 4596 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 4597 struct ieee80211_channel *chan, 4598 unsigned int duration, gfp_t gfp); 4599 4600 /** 4601 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 4602 * @wdev: wireless device 4603 * @cookie: the request cookie 4604 * @chan: The current channel (from remain_on_channel request) 4605 * @gfp: allocation flags 4606 */ 4607 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 4608 struct ieee80211_channel *chan, 4609 gfp_t gfp); 4610 4611 4612 /** 4613 * cfg80211_new_sta - notify userspace about station 4614 * 4615 * @dev: the netdev 4616 * @mac_addr: the station's address 4617 * @sinfo: the station information 4618 * @gfp: allocation flags 4619 */ 4620 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 4621 struct station_info *sinfo, gfp_t gfp); 4622 4623 /** 4624 * cfg80211_del_sta_sinfo - notify userspace about deletion of a station 4625 * @dev: the netdev 4626 * @mac_addr: the station's address 4627 * @sinfo: the station information/statistics 4628 * @gfp: allocation flags 4629 */ 4630 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 4631 struct station_info *sinfo, gfp_t gfp); 4632 4633 /** 4634 * cfg80211_del_sta - notify userspace about deletion of a station 4635 * 4636 * @dev: the netdev 4637 * @mac_addr: the station's address 4638 * @gfp: allocation flags 4639 */ 4640 static inline void cfg80211_del_sta(struct net_device *dev, 4641 const u8 *mac_addr, gfp_t gfp) 4642 { 4643 cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp); 4644 } 4645 4646 /** 4647 * cfg80211_conn_failed - connection request failed notification 4648 * 4649 * @dev: the netdev 4650 * @mac_addr: the station's address 4651 * @reason: the reason for connection failure 4652 * @gfp: allocation flags 4653 * 4654 * Whenever a station tries to connect to an AP and if the station 4655 * could not connect to the AP as the AP has rejected the connection 4656 * for some reasons, this function is called. 4657 * 4658 * The reason for connection failure can be any of the value from 4659 * nl80211_connect_failed_reason enum 4660 */ 4661 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 4662 enum nl80211_connect_failed_reason reason, 4663 gfp_t gfp); 4664 4665 /** 4666 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 4667 * @wdev: wireless device receiving the frame 4668 * @freq: Frequency on which the frame was received in MHz 4669 * @sig_dbm: signal strength in mBm, or 0 if unknown 4670 * @buf: Management frame (header + body) 4671 * @len: length of the frame data 4672 * @flags: flags, as defined in enum nl80211_rxmgmt_flags 4673 * 4674 * This function is called whenever an Action frame is received for a station 4675 * mode interface, but is not processed in kernel. 4676 * 4677 * Return: %true if a user space application has registered for this frame. 4678 * For action frames, that makes it responsible for rejecting unrecognized 4679 * action frames; %false otherwise, in which case for action frames the 4680 * driver is responsible for rejecting the frame. 4681 */ 4682 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm, 4683 const u8 *buf, size_t len, u32 flags); 4684 4685 /** 4686 * cfg80211_mgmt_tx_status - notification of TX status for management frame 4687 * @wdev: wireless device receiving the frame 4688 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 4689 * @buf: Management frame (header + body) 4690 * @len: length of the frame data 4691 * @ack: Whether frame was acknowledged 4692 * @gfp: context flags 4693 * 4694 * This function is called whenever a management frame was requested to be 4695 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 4696 * transmission attempt. 4697 */ 4698 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 4699 const u8 *buf, size_t len, bool ack, gfp_t gfp); 4700 4701 4702 /** 4703 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 4704 * @dev: network device 4705 * @rssi_event: the triggered RSSI event 4706 * @gfp: context flags 4707 * 4708 * This function is called when a configured connection quality monitoring 4709 * rssi threshold reached event occurs. 4710 */ 4711 void cfg80211_cqm_rssi_notify(struct net_device *dev, 4712 enum nl80211_cqm_rssi_threshold_event rssi_event, 4713 gfp_t gfp); 4714 4715 /** 4716 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 4717 * @dev: network device 4718 * @peer: peer's MAC address 4719 * @num_packets: how many packets were lost -- should be a fixed threshold 4720 * but probably no less than maybe 50, or maybe a throughput dependent 4721 * threshold (to account for temporary interference) 4722 * @gfp: context flags 4723 */ 4724 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 4725 const u8 *peer, u32 num_packets, gfp_t gfp); 4726 4727 /** 4728 * cfg80211_cqm_txe_notify - TX error rate event 4729 * @dev: network device 4730 * @peer: peer's MAC address 4731 * @num_packets: how many packets were lost 4732 * @rate: % of packets which failed transmission 4733 * @intvl: interval (in s) over which the TX failure threshold was breached. 4734 * @gfp: context flags 4735 * 4736 * Notify userspace when configured % TX failures over number of packets in a 4737 * given interval is exceeded. 4738 */ 4739 void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, 4740 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp); 4741 4742 /** 4743 * cfg80211_cqm_beacon_loss_notify - beacon loss event 4744 * @dev: network device 4745 * @gfp: context flags 4746 * 4747 * Notify userspace about beacon loss from the connected AP. 4748 */ 4749 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp); 4750 4751 /** 4752 * cfg80211_radar_event - radar detection event 4753 * @wiphy: the wiphy 4754 * @chandef: chandef for the current channel 4755 * @gfp: context flags 4756 * 4757 * This function is called when a radar is detected on the current chanenl. 4758 */ 4759 void cfg80211_radar_event(struct wiphy *wiphy, 4760 struct cfg80211_chan_def *chandef, gfp_t gfp); 4761 4762 /** 4763 * cfg80211_cac_event - Channel availability check (CAC) event 4764 * @netdev: network device 4765 * @chandef: chandef for the current channel 4766 * @event: type of event 4767 * @gfp: context flags 4768 * 4769 * This function is called when a Channel availability check (CAC) is finished 4770 * or aborted. This must be called to notify the completion of a CAC process, 4771 * also by full-MAC drivers. 4772 */ 4773 void cfg80211_cac_event(struct net_device *netdev, 4774 const struct cfg80211_chan_def *chandef, 4775 enum nl80211_radar_event event, gfp_t gfp); 4776 4777 4778 /** 4779 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 4780 * @dev: network device 4781 * @bssid: BSSID of AP (to avoid races) 4782 * @replay_ctr: new replay counter 4783 * @gfp: allocation flags 4784 */ 4785 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 4786 const u8 *replay_ctr, gfp_t gfp); 4787 4788 /** 4789 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 4790 * @dev: network device 4791 * @index: candidate index (the smaller the index, the higher the priority) 4792 * @bssid: BSSID of AP 4793 * @preauth: Whether AP advertises support for RSN pre-authentication 4794 * @gfp: allocation flags 4795 */ 4796 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 4797 const u8 *bssid, bool preauth, gfp_t gfp); 4798 4799 /** 4800 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 4801 * @dev: The device the frame matched to 4802 * @addr: the transmitter address 4803 * @gfp: context flags 4804 * 4805 * This function is used in AP mode (only!) to inform userspace that 4806 * a spurious class 3 frame was received, to be able to deauth the 4807 * sender. 4808 * Return: %true if the frame was passed to userspace (or this failed 4809 * for a reason other than not having a subscription.) 4810 */ 4811 bool cfg80211_rx_spurious_frame(struct net_device *dev, 4812 const u8 *addr, gfp_t gfp); 4813 4814 /** 4815 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 4816 * @dev: The device the frame matched to 4817 * @addr: the transmitter address 4818 * @gfp: context flags 4819 * 4820 * This function is used in AP mode (only!) to inform userspace that 4821 * an associated station sent a 4addr frame but that wasn't expected. 4822 * It is allowed and desirable to send this event only once for each 4823 * station to avoid event flooding. 4824 * Return: %true if the frame was passed to userspace (or this failed 4825 * for a reason other than not having a subscription.) 4826 */ 4827 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 4828 const u8 *addr, gfp_t gfp); 4829 4830 /** 4831 * cfg80211_probe_status - notify userspace about probe status 4832 * @dev: the device the probe was sent on 4833 * @addr: the address of the peer 4834 * @cookie: the cookie filled in @probe_client previously 4835 * @acked: indicates whether probe was acked or not 4836 * @gfp: allocation flags 4837 */ 4838 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 4839 u64 cookie, bool acked, gfp_t gfp); 4840 4841 /** 4842 * cfg80211_report_obss_beacon - report beacon from other APs 4843 * @wiphy: The wiphy that received the beacon 4844 * @frame: the frame 4845 * @len: length of the frame 4846 * @freq: frequency the frame was received on 4847 * @sig_dbm: signal strength in mBm, or 0 if unknown 4848 * 4849 * Use this function to report to userspace when a beacon was 4850 * received. It is not useful to call this when there is no 4851 * netdev that is in AP/GO mode. 4852 */ 4853 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 4854 const u8 *frame, size_t len, 4855 int freq, int sig_dbm); 4856 4857 /** 4858 * cfg80211_reg_can_beacon - check if beaconing is allowed 4859 * @wiphy: the wiphy 4860 * @chandef: the channel definition 4861 * @iftype: interface type 4862 * 4863 * Return: %true if there is no secondary channel or the secondary channel(s) 4864 * can be used for beaconing (i.e. is not a radar channel etc.) 4865 */ 4866 bool cfg80211_reg_can_beacon(struct wiphy *wiphy, 4867 struct cfg80211_chan_def *chandef, 4868 enum nl80211_iftype iftype); 4869 4870 /** 4871 * cfg80211_reg_can_beacon_relax - check if beaconing is allowed with relaxation 4872 * @wiphy: the wiphy 4873 * @chandef: the channel definition 4874 * @iftype: interface type 4875 * 4876 * Return: %true if there is no secondary channel or the secondary channel(s) 4877 * can be used for beaconing (i.e. is not a radar channel etc.). This version 4878 * also checks if IR-relaxation conditions apply, to allow beaconing under 4879 * more permissive conditions. 4880 * 4881 * Requires the RTNL to be held. 4882 */ 4883 bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy, 4884 struct cfg80211_chan_def *chandef, 4885 enum nl80211_iftype iftype); 4886 4887 /* 4888 * cfg80211_ch_switch_notify - update wdev channel and notify userspace 4889 * @dev: the device which switched channels 4890 * @chandef: the new channel definition 4891 * 4892 * Caller must acquire wdev_lock, therefore must only be called from sleepable 4893 * driver context! 4894 */ 4895 void cfg80211_ch_switch_notify(struct net_device *dev, 4896 struct cfg80211_chan_def *chandef); 4897 4898 /* 4899 * cfg80211_ch_switch_started_notify - notify channel switch start 4900 * @dev: the device on which the channel switch started 4901 * @chandef: the future channel definition 4902 * @count: the number of TBTTs until the channel switch happens 4903 * 4904 * Inform the userspace about the channel switch that has just 4905 * started, so that it can take appropriate actions (eg. starting 4906 * channel switch on other vifs), if necessary. 4907 */ 4908 void cfg80211_ch_switch_started_notify(struct net_device *dev, 4909 struct cfg80211_chan_def *chandef, 4910 u8 count); 4911 4912 /** 4913 * ieee80211_operating_class_to_band - convert operating class to band 4914 * 4915 * @operating_class: the operating class to convert 4916 * @band: band pointer to fill 4917 * 4918 * Returns %true if the conversion was successful, %false otherwise. 4919 */ 4920 bool ieee80211_operating_class_to_band(u8 operating_class, 4921 enum ieee80211_band *band); 4922 4923 /** 4924 * ieee80211_chandef_to_operating_class - convert chandef to operation class 4925 * 4926 * @chandef: the chandef to convert 4927 * @op_class: a pointer to the resulting operating class 4928 * 4929 * Returns %true if the conversion was successful, %false otherwise. 4930 */ 4931 bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, 4932 u8 *op_class); 4933 4934 /* 4935 * cfg80211_tdls_oper_request - request userspace to perform TDLS operation 4936 * @dev: the device on which the operation is requested 4937 * @peer: the MAC address of the peer device 4938 * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or 4939 * NL80211_TDLS_TEARDOWN) 4940 * @reason_code: the reason code for teardown request 4941 * @gfp: allocation flags 4942 * 4943 * This function is used to request userspace to perform TDLS operation that 4944 * requires knowledge of keys, i.e., link setup or teardown when the AP 4945 * connection uses encryption. This is optional mechanism for the driver to use 4946 * if it can automatically determine when a TDLS link could be useful (e.g., 4947 * based on traffic and signal strength for a peer). 4948 */ 4949 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 4950 enum nl80211_tdls_operation oper, 4951 u16 reason_code, gfp_t gfp); 4952 4953 /* 4954 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 4955 * @rate: given rate_info to calculate bitrate from 4956 * 4957 * return 0 if MCS index >= 32 4958 */ 4959 u32 cfg80211_calculate_bitrate(struct rate_info *rate); 4960 4961 /** 4962 * cfg80211_unregister_wdev - remove the given wdev 4963 * @wdev: struct wireless_dev to remove 4964 * 4965 * Call this function only for wdevs that have no netdev assigned, 4966 * e.g. P2P Devices. It removes the device from the list so that 4967 * it can no longer be used. It is necessary to call this function 4968 * even when cfg80211 requests the removal of the interface by 4969 * calling the del_virtual_intf() callback. The function must also 4970 * be called when the driver wishes to unregister the wdev, e.g. 4971 * when the device is unbound from the driver. 4972 * 4973 * Requires the RTNL to be held. 4974 */ 4975 void cfg80211_unregister_wdev(struct wireless_dev *wdev); 4976 4977 /** 4978 * struct cfg80211_ft_event - FT Information Elements 4979 * @ies: FT IEs 4980 * @ies_len: length of the FT IE in bytes 4981 * @target_ap: target AP's MAC address 4982 * @ric_ies: RIC IE 4983 * @ric_ies_len: length of the RIC IE in bytes 4984 */ 4985 struct cfg80211_ft_event_params { 4986 const u8 *ies; 4987 size_t ies_len; 4988 const u8 *target_ap; 4989 const u8 *ric_ies; 4990 size_t ric_ies_len; 4991 }; 4992 4993 /** 4994 * cfg80211_ft_event - notify userspace about FT IE and RIC IE 4995 * @netdev: network device 4996 * @ft_event: IE information 4997 */ 4998 void cfg80211_ft_event(struct net_device *netdev, 4999 struct cfg80211_ft_event_params *ft_event); 5000 5001 /** 5002 * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer 5003 * @ies: the input IE buffer 5004 * @len: the input length 5005 * @attr: the attribute ID to find 5006 * @buf: output buffer, can be %NULL if the data isn't needed, e.g. 5007 * if the function is only called to get the needed buffer size 5008 * @bufsize: size of the output buffer 5009 * 5010 * The function finds a given P2P attribute in the (vendor) IEs and 5011 * copies its contents to the given buffer. 5012 * 5013 * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is 5014 * malformed or the attribute can't be found (respectively), or the 5015 * length of the found attribute (which can be zero). 5016 */ 5017 int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, 5018 enum ieee80211_p2p_attr_id attr, 5019 u8 *buf, unsigned int bufsize); 5020 5021 /** 5022 * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC) 5023 * @ies: the IE buffer 5024 * @ielen: the length of the IE buffer 5025 * @ids: an array with element IDs that are allowed before 5026 * the split 5027 * @n_ids: the size of the element ID array 5028 * @after_ric: array IE types that come after the RIC element 5029 * @n_after_ric: size of the @after_ric array 5030 * @offset: offset where to start splitting in the buffer 5031 * 5032 * This function splits an IE buffer by updating the @offset 5033 * variable to point to the location where the buffer should be 5034 * split. 5035 * 5036 * It assumes that the given IE buffer is well-formed, this 5037 * has to be guaranteed by the caller! 5038 * 5039 * It also assumes that the IEs in the buffer are ordered 5040 * correctly, if not the result of using this function will not 5041 * be ordered correctly either, i.e. it does no reordering. 5042 * 5043 * The function returns the offset where the next part of the 5044 * buffer starts, which may be @ielen if the entire (remainder) 5045 * of the buffer should be used. 5046 */ 5047 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 5048 const u8 *ids, int n_ids, 5049 const u8 *after_ric, int n_after_ric, 5050 size_t offset); 5051 5052 /** 5053 * ieee80211_ie_split - split an IE buffer according to ordering 5054 * @ies: the IE buffer 5055 * @ielen: the length of the IE buffer 5056 * @ids: an array with element IDs that are allowed before 5057 * the split 5058 * @n_ids: the size of the element ID array 5059 * @offset: offset where to start splitting in the buffer 5060 * 5061 * This function splits an IE buffer by updating the @offset 5062 * variable to point to the location where the buffer should be 5063 * split. 5064 * 5065 * It assumes that the given IE buffer is well-formed, this 5066 * has to be guaranteed by the caller! 5067 * 5068 * It also assumes that the IEs in the buffer are ordered 5069 * correctly, if not the result of using this function will not 5070 * be ordered correctly either, i.e. it does no reordering. 5071 * 5072 * The function returns the offset where the next part of the 5073 * buffer starts, which may be @ielen if the entire (remainder) 5074 * of the buffer should be used. 5075 */ 5076 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 5077 const u8 *ids, int n_ids, size_t offset); 5078 5079 /** 5080 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN 5081 * @wdev: the wireless device reporting the wakeup 5082 * @wakeup: the wakeup report 5083 * @gfp: allocation flags 5084 * 5085 * This function reports that the given device woke up. If it 5086 * caused the wakeup, report the reason(s), otherwise you may 5087 * pass %NULL as the @wakeup parameter to advertise that something 5088 * else caused the wakeup. 5089 */ 5090 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 5091 struct cfg80211_wowlan_wakeup *wakeup, 5092 gfp_t gfp); 5093 5094 /** 5095 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver. 5096 * 5097 * @wdev: the wireless device for which critical protocol is stopped. 5098 * @gfp: allocation flags 5099 * 5100 * This function can be called by the driver to indicate it has reverted 5101 * operation back to normal. One reason could be that the duration given 5102 * by .crit_proto_start() has expired. 5103 */ 5104 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); 5105 5106 /** 5107 * ieee80211_get_num_supported_channels - get number of channels device has 5108 * @wiphy: the wiphy 5109 * 5110 * Return: the number of channels supported by the device. 5111 */ 5112 unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); 5113 5114 /** 5115 * cfg80211_check_combinations - check interface combinations 5116 * 5117 * @wiphy: the wiphy 5118 * @num_different_channels: the number of different channels we want 5119 * to use for verification 5120 * @radar_detect: a bitmap where each bit corresponds to a channel 5121 * width where radar detection is needed, as in the definition of 5122 * &struct ieee80211_iface_combination.@radar_detect_widths 5123 * @iftype_num: array with the numbers of interfaces of each interface 5124 * type. The index is the interface type as specified in &enum 5125 * nl80211_iftype. 5126 * 5127 * This function can be called by the driver to check whether a 5128 * combination of interfaces and their types are allowed according to 5129 * the interface combinations. 5130 */ 5131 int cfg80211_check_combinations(struct wiphy *wiphy, 5132 const int num_different_channels, 5133 const u8 radar_detect, 5134 const int iftype_num[NUM_NL80211_IFTYPES]); 5135 5136 /** 5137 * cfg80211_iter_combinations - iterate over matching combinations 5138 * 5139 * @wiphy: the wiphy 5140 * @num_different_channels: the number of different channels we want 5141 * to use for verification 5142 * @radar_detect: a bitmap where each bit corresponds to a channel 5143 * width where radar detection is needed, as in the definition of 5144 * &struct ieee80211_iface_combination.@radar_detect_widths 5145 * @iftype_num: array with the numbers of interfaces of each interface 5146 * type. The index is the interface type as specified in &enum 5147 * nl80211_iftype. 5148 * @iter: function to call for each matching combination 5149 * @data: pointer to pass to iter function 5150 * 5151 * This function can be called by the driver to check what possible 5152 * combinations it fits in at a given moment, e.g. for channel switching 5153 * purposes. 5154 */ 5155 int cfg80211_iter_combinations(struct wiphy *wiphy, 5156 const int num_different_channels, 5157 const u8 radar_detect, 5158 const int iftype_num[NUM_NL80211_IFTYPES], 5159 void (*iter)(const struct ieee80211_iface_combination *c, 5160 void *data), 5161 void *data); 5162 5163 /* 5164 * cfg80211_stop_iface - trigger interface disconnection 5165 * 5166 * @wiphy: the wiphy 5167 * @wdev: wireless device 5168 * @gfp: context flags 5169 * 5170 * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA 5171 * disconnected. 5172 * 5173 * Note: This doesn't need any locks and is asynchronous. 5174 */ 5175 void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, 5176 gfp_t gfp); 5177 5178 /** 5179 * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy 5180 * @wiphy: the wiphy to shut down 5181 * 5182 * This function shuts down all interfaces belonging to this wiphy by 5183 * calling dev_close() (and treating non-netdev interfaces as needed). 5184 * It shouldn't really be used unless there are some fatal device errors 5185 * that really can't be recovered in any other way. 5186 * 5187 * Callers must hold the RTNL and be able to deal with callbacks into 5188 * the driver while the function is running. 5189 */ 5190 void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy); 5191 5192 /** 5193 * wiphy_ext_feature_set - set the extended feature flag 5194 * 5195 * @wiphy: the wiphy to modify. 5196 * @ftidx: extended feature bit index. 5197 * 5198 * The extended features are flagged in multiple bytes (see 5199 * &struct wiphy.@ext_features) 5200 */ 5201 static inline void wiphy_ext_feature_set(struct wiphy *wiphy, 5202 enum nl80211_ext_feature_index ftidx) 5203 { 5204 u8 *ft_byte; 5205 5206 ft_byte = &wiphy->ext_features[ftidx / 8]; 5207 *ft_byte |= BIT(ftidx % 8); 5208 } 5209 5210 /** 5211 * wiphy_ext_feature_isset - check the extended feature flag 5212 * 5213 * @wiphy: the wiphy to modify. 5214 * @ftidx: extended feature bit index. 5215 * 5216 * The extended features are flagged in multiple bytes (see 5217 * &struct wiphy.@ext_features) 5218 */ 5219 static inline bool 5220 wiphy_ext_feature_isset(struct wiphy *wiphy, 5221 enum nl80211_ext_feature_index ftidx) 5222 { 5223 u8 ft_byte; 5224 5225 ft_byte = wiphy->ext_features[ftidx / 8]; 5226 return (ft_byte & BIT(ftidx % 8)) != 0; 5227 } 5228 5229 /* ethtool helper */ 5230 void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info); 5231 5232 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 5233 5234 /* wiphy_printk helpers, similar to dev_printk */ 5235 5236 #define wiphy_printk(level, wiphy, format, args...) \ 5237 dev_printk(level, &(wiphy)->dev, format, ##args) 5238 #define wiphy_emerg(wiphy, format, args...) \ 5239 dev_emerg(&(wiphy)->dev, format, ##args) 5240 #define wiphy_alert(wiphy, format, args...) \ 5241 dev_alert(&(wiphy)->dev, format, ##args) 5242 #define wiphy_crit(wiphy, format, args...) \ 5243 dev_crit(&(wiphy)->dev, format, ##args) 5244 #define wiphy_err(wiphy, format, args...) \ 5245 dev_err(&(wiphy)->dev, format, ##args) 5246 #define wiphy_warn(wiphy, format, args...) \ 5247 dev_warn(&(wiphy)->dev, format, ##args) 5248 #define wiphy_notice(wiphy, format, args...) \ 5249 dev_notice(&(wiphy)->dev, format, ##args) 5250 #define wiphy_info(wiphy, format, args...) \ 5251 dev_info(&(wiphy)->dev, format, ##args) 5252 5253 #define wiphy_debug(wiphy, format, args...) \ 5254 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 5255 5256 #define wiphy_dbg(wiphy, format, args...) \ 5257 dev_dbg(&(wiphy)->dev, format, ##args) 5258 5259 #if defined(VERBOSE_DEBUG) 5260 #define wiphy_vdbg wiphy_dbg 5261 #else 5262 #define wiphy_vdbg(wiphy, format, args...) \ 5263 ({ \ 5264 if (0) \ 5265 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 5266 0; \ 5267 }) 5268 #endif 5269 5270 /* 5271 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 5272 * of using a WARN/WARN_ON to get the message out, including the 5273 * file/line information and a backtrace. 5274 */ 5275 #define wiphy_WARN(wiphy, format, args...) \ 5276 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 5277 5278 #endif /* __NET_CFG80211_H */ 5279