1/* 2 * IEEE 802.11 defines 3 * 4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 5 * <jkmaline@cc.hut.fi> 6 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> 7 * Copyright (c) 2005, Devicescape Software, Inc. 8 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15#ifndef LINUX_IEEE80211_H 16#define LINUX_IEEE80211_H 17 18#include <linux/types.h> 19#include <asm/byteorder.h> 20 21/* 22 * DS bit usage 23 * 24 * TA = transmitter address 25 * RA = receiver address 26 * DA = destination address 27 * SA = source address 28 * 29 * ToDS FromDS A1(RA) A2(TA) A3 A4 Use 30 * ----------------------------------------------------------------- 31 * 0 0 DA SA BSSID - IBSS/DLS 32 * 0 1 DA BSSID SA - AP -> STA 33 * 1 0 BSSID SA DA - AP <- STA 34 * 1 1 RA TA DA SA unspecified (WDS) 35 */ 36 37#define FCS_LEN 4 38 39#define IEEE80211_FCTL_VERS 0x0003 40#define IEEE80211_FCTL_FTYPE 0x000c 41#define IEEE80211_FCTL_STYPE 0x00f0 42#define IEEE80211_FCTL_TODS 0x0100 43#define IEEE80211_FCTL_FROMDS 0x0200 44#define IEEE80211_FCTL_MOREFRAGS 0x0400 45#define IEEE80211_FCTL_RETRY 0x0800 46#define IEEE80211_FCTL_PM 0x1000 47#define IEEE80211_FCTL_MOREDATA 0x2000 48#define IEEE80211_FCTL_PROTECTED 0x4000 49#define IEEE80211_FCTL_ORDER 0x8000 50 51#define IEEE80211_SCTL_FRAG 0x000F 52#define IEEE80211_SCTL_SEQ 0xFFF0 53 54#define IEEE80211_FTYPE_MGMT 0x0000 55#define IEEE80211_FTYPE_CTL 0x0004 56#define IEEE80211_FTYPE_DATA 0x0008 57 58/* management */ 59#define IEEE80211_STYPE_ASSOC_REQ 0x0000 60#define IEEE80211_STYPE_ASSOC_RESP 0x0010 61#define IEEE80211_STYPE_REASSOC_REQ 0x0020 62#define IEEE80211_STYPE_REASSOC_RESP 0x0030 63#define IEEE80211_STYPE_PROBE_REQ 0x0040 64#define IEEE80211_STYPE_PROBE_RESP 0x0050 65#define IEEE80211_STYPE_BEACON 0x0080 66#define IEEE80211_STYPE_ATIM 0x0090 67#define IEEE80211_STYPE_DISASSOC 0x00A0 68#define IEEE80211_STYPE_AUTH 0x00B0 69#define IEEE80211_STYPE_DEAUTH 0x00C0 70#define IEEE80211_STYPE_ACTION 0x00D0 71 72/* control */ 73#define IEEE80211_STYPE_BACK_REQ 0x0080 74#define IEEE80211_STYPE_BACK 0x0090 75#define IEEE80211_STYPE_PSPOLL 0x00A0 76#define IEEE80211_STYPE_RTS 0x00B0 77#define IEEE80211_STYPE_CTS 0x00C0 78#define IEEE80211_STYPE_ACK 0x00D0 79#define IEEE80211_STYPE_CFEND 0x00E0 80#define IEEE80211_STYPE_CFENDACK 0x00F0 81 82/* data */ 83#define IEEE80211_STYPE_DATA 0x0000 84#define IEEE80211_STYPE_DATA_CFACK 0x0010 85#define IEEE80211_STYPE_DATA_CFPOLL 0x0020 86#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030 87#define IEEE80211_STYPE_NULLFUNC 0x0040 88#define IEEE80211_STYPE_CFACK 0x0050 89#define IEEE80211_STYPE_CFPOLL 0x0060 90#define IEEE80211_STYPE_CFACKPOLL 0x0070 91#define IEEE80211_STYPE_QOS_DATA 0x0080 92#define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090 93#define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0 94#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0 95#define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0 96#define IEEE80211_STYPE_QOS_CFACK 0x00D0 97#define IEEE80211_STYPE_QOS_CFPOLL 0x00E0 98#define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0 99 100 101/* miscellaneous IEEE 802.11 constants */ 102#define IEEE80211_MAX_FRAG_THRESHOLD 2352 103#define IEEE80211_MAX_RTS_THRESHOLD 2353 104#define IEEE80211_MAX_AID 2007 105#define IEEE80211_MAX_TIM_LEN 251 106/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section 107 6.2.1.1.2. 108 109 802.11e clarifies the figure in section 7.1.2. The frame body is 110 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */ 111#define IEEE80211_MAX_DATA_LEN 2304 112/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */ 113#define IEEE80211_MAX_FRAME_LEN 2352 114 115#define IEEE80211_MAX_SSID_LEN 32 116 117#define IEEE80211_MAX_MESH_ID_LEN 32 118 119#define IEEE80211_QOS_CTL_LEN 2 120#define IEEE80211_QOS_CTL_TID_MASK 0x000F 121#define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007 122 123/* U-APSD queue for WMM IEs sent by AP */ 124#define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7) 125 126/* U-APSD queues for WMM IEs sent by STA */ 127#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0) 128#define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1) 129#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2) 130#define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3) 131#define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f 132 133/* U-APSD max SP length for WMM IEs sent by STA */ 134#define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00 135#define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01 136#define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02 137#define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03 138#define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03 139#define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5 140 141#define IEEE80211_HT_CTL_LEN 4 142 143struct ieee80211_hdr { 144 __le16 frame_control; 145 __le16 duration_id; 146 u8 addr1[6]; 147 u8 addr2[6]; 148 u8 addr3[6]; 149 __le16 seq_ctrl; 150 u8 addr4[6]; 151} __attribute__ ((packed)); 152 153struct ieee80211_hdr_3addr { 154 __le16 frame_control; 155 __le16 duration_id; 156 u8 addr1[6]; 157 u8 addr2[6]; 158 u8 addr3[6]; 159 __le16 seq_ctrl; 160} __attribute__ ((packed)); 161 162struct ieee80211_qos_hdr { 163 __le16 frame_control; 164 __le16 duration_id; 165 u8 addr1[6]; 166 u8 addr2[6]; 167 u8 addr3[6]; 168 __le16 seq_ctrl; 169 __le16 qos_ctrl; 170} __attribute__ ((packed)); 171 172/** 173 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set 174 * @fc: frame control bytes in little-endian byteorder 175 */ 176static inline int ieee80211_has_tods(__le16 fc) 177{ 178 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0; 179} 180 181/** 182 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set 183 * @fc: frame control bytes in little-endian byteorder 184 */ 185static inline int ieee80211_has_fromds(__le16 fc) 186{ 187 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0; 188} 189 190/** 191 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set 192 * @fc: frame control bytes in little-endian byteorder 193 */ 194static inline int ieee80211_has_a4(__le16 fc) 195{ 196 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); 197 return (fc & tmp) == tmp; 198} 199 200/** 201 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set 202 * @fc: frame control bytes in little-endian byteorder 203 */ 204static inline int ieee80211_has_morefrags(__le16 fc) 205{ 206 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0; 207} 208 209/** 210 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set 211 * @fc: frame control bytes in little-endian byteorder 212 */ 213static inline int ieee80211_has_retry(__le16 fc) 214{ 215 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0; 216} 217 218/** 219 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set 220 * @fc: frame control bytes in little-endian byteorder 221 */ 222static inline int ieee80211_has_pm(__le16 fc) 223{ 224 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0; 225} 226 227/** 228 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set 229 * @fc: frame control bytes in little-endian byteorder 230 */ 231static inline int ieee80211_has_moredata(__le16 fc) 232{ 233 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0; 234} 235 236/** 237 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set 238 * @fc: frame control bytes in little-endian byteorder 239 */ 240static inline int ieee80211_has_protected(__le16 fc) 241{ 242 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0; 243} 244 245/** 246 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set 247 * @fc: frame control bytes in little-endian byteorder 248 */ 249static inline int ieee80211_has_order(__le16 fc) 250{ 251 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0; 252} 253 254/** 255 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT 256 * @fc: frame control bytes in little-endian byteorder 257 */ 258static inline int ieee80211_is_mgmt(__le16 fc) 259{ 260 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 261 cpu_to_le16(IEEE80211_FTYPE_MGMT); 262} 263 264/** 265 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL 266 * @fc: frame control bytes in little-endian byteorder 267 */ 268static inline int ieee80211_is_ctl(__le16 fc) 269{ 270 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 271 cpu_to_le16(IEEE80211_FTYPE_CTL); 272} 273 274/** 275 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA 276 * @fc: frame control bytes in little-endian byteorder 277 */ 278static inline int ieee80211_is_data(__le16 fc) 279{ 280 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 281 cpu_to_le16(IEEE80211_FTYPE_DATA); 282} 283 284/** 285 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set 286 * @fc: frame control bytes in little-endian byteorder 287 */ 288static inline int ieee80211_is_data_qos(__le16 fc) 289{ 290 /* 291 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need 292 * to check the one bit 293 */ 294 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) == 295 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA); 296} 297 298/** 299 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data 300 * @fc: frame control bytes in little-endian byteorder 301 */ 302static inline int ieee80211_is_data_present(__le16 fc) 303{ 304 /* 305 * mask with 0x40 and test that that bit is clear to only return true 306 * for the data-containing substypes. 307 */ 308 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) == 309 cpu_to_le16(IEEE80211_FTYPE_DATA); 310} 311 312/** 313 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ 314 * @fc: frame control bytes in little-endian byteorder 315 */ 316static inline int ieee80211_is_assoc_req(__le16 fc) 317{ 318 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 319 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ); 320} 321 322/** 323 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP 324 * @fc: frame control bytes in little-endian byteorder 325 */ 326static inline int ieee80211_is_assoc_resp(__le16 fc) 327{ 328 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 329 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP); 330} 331 332/** 333 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ 334 * @fc: frame control bytes in little-endian byteorder 335 */ 336static inline int ieee80211_is_reassoc_req(__le16 fc) 337{ 338 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 339 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ); 340} 341 342/** 343 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP 344 * @fc: frame control bytes in little-endian byteorder 345 */ 346static inline int ieee80211_is_reassoc_resp(__le16 fc) 347{ 348 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 349 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP); 350} 351 352/** 353 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ 354 * @fc: frame control bytes in little-endian byteorder 355 */ 356static inline int ieee80211_is_probe_req(__le16 fc) 357{ 358 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 359 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ); 360} 361 362/** 363 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP 364 * @fc: frame control bytes in little-endian byteorder 365 */ 366static inline int ieee80211_is_probe_resp(__le16 fc) 367{ 368 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 369 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); 370} 371 372/** 373 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON 374 * @fc: frame control bytes in little-endian byteorder 375 */ 376static inline int ieee80211_is_beacon(__le16 fc) 377{ 378 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 379 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON); 380} 381 382/** 383 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM 384 * @fc: frame control bytes in little-endian byteorder 385 */ 386static inline int ieee80211_is_atim(__le16 fc) 387{ 388 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 389 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM); 390} 391 392/** 393 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC 394 * @fc: frame control bytes in little-endian byteorder 395 */ 396static inline int ieee80211_is_disassoc(__le16 fc) 397{ 398 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 399 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC); 400} 401 402/** 403 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH 404 * @fc: frame control bytes in little-endian byteorder 405 */ 406static inline int ieee80211_is_auth(__le16 fc) 407{ 408 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 409 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); 410} 411 412/** 413 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH 414 * @fc: frame control bytes in little-endian byteorder 415 */ 416static inline int ieee80211_is_deauth(__le16 fc) 417{ 418 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 419 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH); 420} 421 422/** 423 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION 424 * @fc: frame control bytes in little-endian byteorder 425 */ 426static inline int ieee80211_is_action(__le16 fc) 427{ 428 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 429 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); 430} 431 432/** 433 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ 434 * @fc: frame control bytes in little-endian byteorder 435 */ 436static inline int ieee80211_is_back_req(__le16 fc) 437{ 438 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 439 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ); 440} 441 442/** 443 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK 444 * @fc: frame control bytes in little-endian byteorder 445 */ 446static inline int ieee80211_is_back(__le16 fc) 447{ 448 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 449 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK); 450} 451 452/** 453 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL 454 * @fc: frame control bytes in little-endian byteorder 455 */ 456static inline int ieee80211_is_pspoll(__le16 fc) 457{ 458 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 459 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); 460} 461 462/** 463 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS 464 * @fc: frame control bytes in little-endian byteorder 465 */ 466static inline int ieee80211_is_rts(__le16 fc) 467{ 468 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 469 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); 470} 471 472/** 473 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS 474 * @fc: frame control bytes in little-endian byteorder 475 */ 476static inline int ieee80211_is_cts(__le16 fc) 477{ 478 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 479 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); 480} 481 482/** 483 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK 484 * @fc: frame control bytes in little-endian byteorder 485 */ 486static inline int ieee80211_is_ack(__le16 fc) 487{ 488 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 489 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK); 490} 491 492/** 493 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND 494 * @fc: frame control bytes in little-endian byteorder 495 */ 496static inline int ieee80211_is_cfend(__le16 fc) 497{ 498 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 499 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND); 500} 501 502/** 503 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK 504 * @fc: frame control bytes in little-endian byteorder 505 */ 506static inline int ieee80211_is_cfendack(__le16 fc) 507{ 508 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 509 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK); 510} 511 512/** 513 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame 514 * @fc: frame control bytes in little-endian byteorder 515 */ 516static inline int ieee80211_is_nullfunc(__le16 fc) 517{ 518 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 519 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC); 520} 521 522/** 523 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame 524 * @fc: frame control bytes in little-endian byteorder 525 */ 526static inline int ieee80211_is_qos_nullfunc(__le16 fc) 527{ 528 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 529 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC); 530} 531 532struct ieee80211s_hdr { 533 u8 flags; 534 u8 ttl; 535 __le32 seqnum; 536 u8 eaddr1[6]; 537 u8 eaddr2[6]; 538 u8 eaddr3[6]; 539} __attribute__ ((packed)); 540 541/* Mesh flags */ 542#define MESH_FLAGS_AE_A4 0x1 543#define MESH_FLAGS_AE_A5_A6 0x2 544#define MESH_FLAGS_AE 0x3 545#define MESH_FLAGS_PS_DEEP 0x4 546 547/** 548 * struct ieee80211_quiet_ie 549 * 550 * This structure refers to "Quiet information element" 551 */ 552struct ieee80211_quiet_ie { 553 u8 count; 554 u8 period; 555 __le16 duration; 556 __le16 offset; 557} __attribute__ ((packed)); 558 559/** 560 * struct ieee80211_msrment_ie 561 * 562 * This structure refers to "Measurement Request/Report information element" 563 */ 564struct ieee80211_msrment_ie { 565 u8 token; 566 u8 mode; 567 u8 type; 568 u8 request[0]; 569} __attribute__ ((packed)); 570 571/** 572 * struct ieee80211_channel_sw_ie 573 * 574 * This structure refers to "Channel Switch Announcement information element" 575 */ 576struct ieee80211_channel_sw_ie { 577 u8 mode; 578 u8 new_ch_num; 579 u8 count; 580} __attribute__ ((packed)); 581 582/** 583 * struct ieee80211_tim 584 * 585 * This structure refers to "Traffic Indication Map information element" 586 */ 587struct ieee80211_tim_ie { 588 u8 dtim_count; 589 u8 dtim_period; 590 u8 bitmap_ctrl; 591 /* variable size: 1 - 251 bytes */ 592 u8 virtual_map[1]; 593} __attribute__ ((packed)); 594 595/** 596 * struct ieee80211_meshconf_ie 597 * 598 * This structure refers to "Mesh Configuration information element" 599 */ 600struct ieee80211_meshconf_ie { 601 u8 meshconf_psel; 602 u8 meshconf_pmetric; 603 u8 meshconf_congest; 604 u8 meshconf_synch; 605 u8 meshconf_auth; 606 u8 meshconf_form; 607 u8 meshconf_cap; 608} __attribute__ ((packed)); 609 610/** 611 * struct ieee80211_rann_ie 612 * 613 * This structure refers to "Root Announcement information element" 614 */ 615struct ieee80211_rann_ie { 616 u8 rann_flags; 617 u8 rann_hopcount; 618 u8 rann_ttl; 619 u8 rann_addr[6]; 620 u32 rann_seq; 621 u32 rann_metric; 622} __attribute__ ((packed)); 623 624#define WLAN_SA_QUERY_TR_ID_LEN 2 625 626struct ieee80211_mgmt { 627 __le16 frame_control; 628 __le16 duration; 629 u8 da[6]; 630 u8 sa[6]; 631 u8 bssid[6]; 632 __le16 seq_ctrl; 633 union { 634 struct { 635 __le16 auth_alg; 636 __le16 auth_transaction; 637 __le16 status_code; 638 /* possibly followed by Challenge text */ 639 u8 variable[0]; 640 } __attribute__ ((packed)) auth; 641 struct { 642 __le16 reason_code; 643 } __attribute__ ((packed)) deauth; 644 struct { 645 __le16 capab_info; 646 __le16 listen_interval; 647 /* followed by SSID and Supported rates */ 648 u8 variable[0]; 649 } __attribute__ ((packed)) assoc_req; 650 struct { 651 __le16 capab_info; 652 __le16 status_code; 653 __le16 aid; 654 /* followed by Supported rates */ 655 u8 variable[0]; 656 } __attribute__ ((packed)) assoc_resp, reassoc_resp; 657 struct { 658 __le16 capab_info; 659 __le16 listen_interval; 660 u8 current_ap[6]; 661 /* followed by SSID and Supported rates */ 662 u8 variable[0]; 663 } __attribute__ ((packed)) reassoc_req; 664 struct { 665 __le16 reason_code; 666 } __attribute__ ((packed)) disassoc; 667 struct { 668 __le64 timestamp; 669 __le16 beacon_int; 670 __le16 capab_info; 671 /* followed by some of SSID, Supported rates, 672 * FH Params, DS Params, CF Params, IBSS Params, TIM */ 673 u8 variable[0]; 674 } __attribute__ ((packed)) beacon; 675 struct { 676 /* only variable items: SSID, Supported rates */ 677 u8 variable[0]; 678 } __attribute__ ((packed)) probe_req; 679 struct { 680 __le64 timestamp; 681 __le16 beacon_int; 682 __le16 capab_info; 683 /* followed by some of SSID, Supported rates, 684 * FH Params, DS Params, CF Params, IBSS Params */ 685 u8 variable[0]; 686 } __attribute__ ((packed)) probe_resp; 687 struct { 688 u8 category; 689 union { 690 struct { 691 u8 action_code; 692 u8 dialog_token; 693 u8 status_code; 694 u8 variable[0]; 695 } __attribute__ ((packed)) wme_action; 696 struct{ 697 u8 action_code; 698 u8 element_id; 699 u8 length; 700 struct ieee80211_channel_sw_ie sw_elem; 701 } __attribute__((packed)) chan_switch; 702 struct{ 703 u8 action_code; 704 u8 dialog_token; 705 u8 element_id; 706 u8 length; 707 struct ieee80211_msrment_ie msr_elem; 708 } __attribute__((packed)) measurement; 709 struct{ 710 u8 action_code; 711 u8 dialog_token; 712 __le16 capab; 713 __le16 timeout; 714 __le16 start_seq_num; 715 } __attribute__((packed)) addba_req; 716 struct{ 717 u8 action_code; 718 u8 dialog_token; 719 __le16 status; 720 __le16 capab; 721 __le16 timeout; 722 } __attribute__((packed)) addba_resp; 723 struct{ 724 u8 action_code; 725 __le16 params; 726 __le16 reason_code; 727 } __attribute__((packed)) delba; 728 struct{ 729 u8 action_code; 730 /* capab_info for open and confirm, 731 * reason for close 732 */ 733 __le16 aux; 734 /* Followed in plink_confirm by status 735 * code, AID and supported rates, 736 * and directly by supported rates in 737 * plink_open and plink_close 738 */ 739 u8 variable[0]; 740 } __attribute__((packed)) plink_action; 741 struct{ 742 u8 action_code; 743 u8 variable[0]; 744 } __attribute__((packed)) mesh_action; 745 struct { 746 u8 action; 747 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN]; 748 } __attribute__ ((packed)) sa_query; 749 struct { 750 u8 action; 751 u8 smps_control; 752 } __attribute__ ((packed)) ht_smps; 753 } u; 754 } __attribute__ ((packed)) action; 755 } u; 756} __attribute__ ((packed)); 757 758/* mgmt header + 1 byte category code */ 759#define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u) 760 761 762/* Management MIC information element (IEEE 802.11w) */ 763struct ieee80211_mmie { 764 u8 element_id; 765 u8 length; 766 __le16 key_id; 767 u8 sequence_number[6]; 768 u8 mic[8]; 769} __attribute__ ((packed)); 770 771/* Control frames */ 772struct ieee80211_rts { 773 __le16 frame_control; 774 __le16 duration; 775 u8 ra[6]; 776 u8 ta[6]; 777} __attribute__ ((packed)); 778 779struct ieee80211_cts { 780 __le16 frame_control; 781 __le16 duration; 782 u8 ra[6]; 783} __attribute__ ((packed)); 784 785struct ieee80211_pspoll { 786 __le16 frame_control; 787 __le16 aid; 788 u8 bssid[6]; 789 u8 ta[6]; 790} __attribute__ ((packed)); 791 792/** 793 * struct ieee80211_bar - HT Block Ack Request 794 * 795 * This structure refers to "HT BlockAckReq" as 796 * described in 802.11n draft section 7.2.1.7.1 797 */ 798struct ieee80211_bar { 799 __le16 frame_control; 800 __le16 duration; 801 __u8 ra[6]; 802 __u8 ta[6]; 803 __le16 control; 804 __le16 start_seq_num; 805} __attribute__((packed)); 806 807/* 802.11 BAR control masks */ 808#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 809#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 810 811 812#define IEEE80211_HT_MCS_MASK_LEN 10 813 814/** 815 * struct ieee80211_mcs_info - MCS information 816 * @rx_mask: RX mask 817 * @rx_highest: highest supported RX rate. If set represents 818 * the highest supported RX data rate in units of 1 Mbps. 819 * If this field is 0 this value should not be used to 820 * consider the highest RX data rate supported. 821 * @tx_params: TX parameters 822 */ 823struct ieee80211_mcs_info { 824 u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN]; 825 __le16 rx_highest; 826 u8 tx_params; 827 u8 reserved[3]; 828} __attribute__((packed)); 829 830/* 802.11n HT capability MSC set */ 831#define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff 832#define IEEE80211_HT_MCS_TX_DEFINED 0x01 833#define IEEE80211_HT_MCS_TX_RX_DIFF 0x02 834/* value 0 == 1 stream etc */ 835#define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK 0x0C 836#define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT 2 837#define IEEE80211_HT_MCS_TX_MAX_STREAMS 4 838#define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION 0x10 839 840/* 841 * 802.11n D5.0 20.3.5 / 20.6 says: 842 * - indices 0 to 7 and 32 are single spatial stream 843 * - 8 to 31 are multiple spatial streams using equal modulation 844 * [8..15 for two streams, 16..23 for three and 24..31 for four] 845 * - remainder are multiple spatial streams using unequal modulation 846 */ 847#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33 848#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \ 849 (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8) 850 851/** 852 * struct ieee80211_ht_cap - HT capabilities 853 * 854 * This structure is the "HT capabilities element" as 855 * described in 802.11n D5.0 7.3.2.57 856 */ 857struct ieee80211_ht_cap { 858 __le16 cap_info; 859 u8 ampdu_params_info; 860 861 /* 16 bytes MCS information */ 862 struct ieee80211_mcs_info mcs; 863 864 __le16 extended_ht_cap_info; 865 __le32 tx_BF_cap_info; 866 u8 antenna_selection_info; 867} __attribute__ ((packed)); 868 869/* 802.11n HT capabilities masks (for cap_info) */ 870#define IEEE80211_HT_CAP_LDPC_CODING 0x0001 871#define IEEE80211_HT_CAP_SUP_WIDTH_20_40 0x0002 872#define IEEE80211_HT_CAP_SM_PS 0x000C 873#define IEEE80211_HT_CAP_SM_PS_SHIFT 2 874#define IEEE80211_HT_CAP_GRN_FLD 0x0010 875#define IEEE80211_HT_CAP_SGI_20 0x0020 876#define IEEE80211_HT_CAP_SGI_40 0x0040 877#define IEEE80211_HT_CAP_TX_STBC 0x0080 878#define IEEE80211_HT_CAP_RX_STBC 0x0300 879#define IEEE80211_HT_CAP_RX_STBC_SHIFT 8 880#define IEEE80211_HT_CAP_DELAY_BA 0x0400 881#define IEEE80211_HT_CAP_MAX_AMSDU 0x0800 882#define IEEE80211_HT_CAP_DSSSCCK40 0x1000 883#define IEEE80211_HT_CAP_RESERVED 0x2000 884#define IEEE80211_HT_CAP_40MHZ_INTOLERANT 0x4000 885#define IEEE80211_HT_CAP_LSIG_TXOP_PROT 0x8000 886 887/* 802.11n HT capability AMPDU settings (for ampdu_params_info) */ 888#define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03 889#define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C 890#define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2 891 892/* 893 * Maximum length of AMPDU that the STA can receive. 894 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets) 895 */ 896enum ieee80211_max_ampdu_length_exp { 897 IEEE80211_HT_MAX_AMPDU_8K = 0, 898 IEEE80211_HT_MAX_AMPDU_16K = 1, 899 IEEE80211_HT_MAX_AMPDU_32K = 2, 900 IEEE80211_HT_MAX_AMPDU_64K = 3 901}; 902 903#define IEEE80211_HT_MAX_AMPDU_FACTOR 13 904 905/* Minimum MPDU start spacing */ 906enum ieee80211_min_mpdu_spacing { 907 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */ 908 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */ 909 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */ 910 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */ 911 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */ 912 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */ 913 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */ 914 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */ 915}; 916 917/** 918 * struct ieee80211_ht_info - HT information 919 * 920 * This structure is the "HT information element" as 921 * described in 802.11n D5.0 7.3.2.58 922 */ 923struct ieee80211_ht_info { 924 u8 control_chan; 925 u8 ht_param; 926 __le16 operation_mode; 927 __le16 stbc_param; 928 u8 basic_set[16]; 929} __attribute__ ((packed)); 930 931/* for ht_param */ 932#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03 933#define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00 934#define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01 935#define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03 936#define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04 937#define IEEE80211_HT_PARAM_RIFS_MODE 0x08 938#define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10 939#define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0 940 941/* for operation_mode */ 942#define IEEE80211_HT_OP_MODE_PROTECTION 0x0003 943#define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0 944#define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1 945#define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2 946#define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3 947#define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004 948#define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010 949 950/* for stbc_param */ 951#define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040 952#define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 953#define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100 954#define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200 955#define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400 956#define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800 957 958 959/* block-ack parameters */ 960#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 961#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C 962#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0 963#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 964#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 965 966/* 967 * A-PMDU buffer sizes 968 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) 969 */ 970#define IEEE80211_MIN_AMPDU_BUF 0x8 971#define IEEE80211_MAX_AMPDU_BUF 0x40 972 973 974/* Spatial Multiplexing Power Save Modes (for capability) */ 975#define WLAN_HT_CAP_SM_PS_STATIC 0 976#define WLAN_HT_CAP_SM_PS_DYNAMIC 1 977#define WLAN_HT_CAP_SM_PS_INVALID 2 978#define WLAN_HT_CAP_SM_PS_DISABLED 3 979 980/* for SM power control field lower two bits */ 981#define WLAN_HT_SMPS_CONTROL_DISABLED 0 982#define WLAN_HT_SMPS_CONTROL_STATIC 1 983#define WLAN_HT_SMPS_CONTROL_DYNAMIC 3 984 985/* Authentication algorithms */ 986#define WLAN_AUTH_OPEN 0 987#define WLAN_AUTH_SHARED_KEY 1 988#define WLAN_AUTH_FT 2 989#define WLAN_AUTH_LEAP 128 990 991#define WLAN_AUTH_CHALLENGE_LEN 128 992 993#define WLAN_CAPABILITY_ESS (1<<0) 994#define WLAN_CAPABILITY_IBSS (1<<1) 995#define WLAN_CAPABILITY_CF_POLLABLE (1<<2) 996#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) 997#define WLAN_CAPABILITY_PRIVACY (1<<4) 998#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) 999#define WLAN_CAPABILITY_PBCC (1<<6) 1000#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) 1001 1002/* 802.11h */ 1003#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) 1004#define WLAN_CAPABILITY_QOS (1<<9) 1005#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) 1006#define WLAN_CAPABILITY_DSSS_OFDM (1<<13) 1007/* measurement */ 1008#define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0) 1009#define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1) 1010#define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2) 1011 1012#define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0 1013#define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1 1014#define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2 1015 1016 1017/* 802.11g ERP information element */ 1018#define WLAN_ERP_NON_ERP_PRESENT (1<<0) 1019#define WLAN_ERP_USE_PROTECTION (1<<1) 1020#define WLAN_ERP_BARKER_PREAMBLE (1<<2) 1021 1022/* WLAN_ERP_BARKER_PREAMBLE values */ 1023enum { 1024 WLAN_ERP_PREAMBLE_SHORT = 0, 1025 WLAN_ERP_PREAMBLE_LONG = 1, 1026}; 1027 1028/* Status codes */ 1029enum ieee80211_statuscode { 1030 WLAN_STATUS_SUCCESS = 0, 1031 WLAN_STATUS_UNSPECIFIED_FAILURE = 1, 1032 WLAN_STATUS_CAPS_UNSUPPORTED = 10, 1033 WLAN_STATUS_REASSOC_NO_ASSOC = 11, 1034 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12, 1035 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13, 1036 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14, 1037 WLAN_STATUS_CHALLENGE_FAIL = 15, 1038 WLAN_STATUS_AUTH_TIMEOUT = 16, 1039 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17, 1040 WLAN_STATUS_ASSOC_DENIED_RATES = 18, 1041 /* 802.11b */ 1042 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19, 1043 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20, 1044 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21, 1045 /* 802.11h */ 1046 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22, 1047 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23, 1048 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24, 1049 /* 802.11g */ 1050 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25, 1051 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26, 1052 /* 802.11w */ 1053 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30, 1054 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31, 1055 /* 802.11i */ 1056 WLAN_STATUS_INVALID_IE = 40, 1057 WLAN_STATUS_INVALID_GROUP_CIPHER = 41, 1058 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42, 1059 WLAN_STATUS_INVALID_AKMP = 43, 1060 WLAN_STATUS_UNSUPP_RSN_VERSION = 44, 1061 WLAN_STATUS_INVALID_RSN_IE_CAP = 45, 1062 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46, 1063 /* 802.11e */ 1064 WLAN_STATUS_UNSPECIFIED_QOS = 32, 1065 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33, 1066 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34, 1067 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35, 1068 WLAN_STATUS_REQUEST_DECLINED = 37, 1069 WLAN_STATUS_INVALID_QOS_PARAM = 38, 1070 WLAN_STATUS_CHANGE_TSPEC = 39, 1071 WLAN_STATUS_WAIT_TS_DELAY = 47, 1072 WLAN_STATUS_NO_DIRECT_LINK = 48, 1073 WLAN_STATUS_STA_NOT_PRESENT = 49, 1074 WLAN_STATUS_STA_NOT_QSTA = 50, 1075}; 1076 1077 1078/* Reason codes */ 1079enum ieee80211_reasoncode { 1080 WLAN_REASON_UNSPECIFIED = 1, 1081 WLAN_REASON_PREV_AUTH_NOT_VALID = 2, 1082 WLAN_REASON_DEAUTH_LEAVING = 3, 1083 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4, 1084 WLAN_REASON_DISASSOC_AP_BUSY = 5, 1085 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6, 1086 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7, 1087 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8, 1088 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9, 1089 /* 802.11h */ 1090 WLAN_REASON_DISASSOC_BAD_POWER = 10, 1091 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11, 1092 /* 802.11i */ 1093 WLAN_REASON_INVALID_IE = 13, 1094 WLAN_REASON_MIC_FAILURE = 14, 1095 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, 1096 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16, 1097 WLAN_REASON_IE_DIFFERENT = 17, 1098 WLAN_REASON_INVALID_GROUP_CIPHER = 18, 1099 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19, 1100 WLAN_REASON_INVALID_AKMP = 20, 1101 WLAN_REASON_UNSUPP_RSN_VERSION = 21, 1102 WLAN_REASON_INVALID_RSN_IE_CAP = 22, 1103 WLAN_REASON_IEEE8021X_FAILED = 23, 1104 WLAN_REASON_CIPHER_SUITE_REJECTED = 24, 1105 /* 802.11e */ 1106 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32, 1107 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33, 1108 WLAN_REASON_DISASSOC_LOW_ACK = 34, 1109 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35, 1110 WLAN_REASON_QSTA_LEAVE_QBSS = 36, 1111 WLAN_REASON_QSTA_NOT_USE = 37, 1112 WLAN_REASON_QSTA_REQUIRE_SETUP = 38, 1113 WLAN_REASON_QSTA_TIMEOUT = 39, 1114 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45, 1115}; 1116 1117 1118/* Information Element IDs */ 1119enum ieee80211_eid { 1120 WLAN_EID_SSID = 0, 1121 WLAN_EID_SUPP_RATES = 1, 1122 WLAN_EID_FH_PARAMS = 2, 1123 WLAN_EID_DS_PARAMS = 3, 1124 WLAN_EID_CF_PARAMS = 4, 1125 WLAN_EID_TIM = 5, 1126 WLAN_EID_IBSS_PARAMS = 6, 1127 WLAN_EID_CHALLENGE = 16, 1128 1129 WLAN_EID_COUNTRY = 7, 1130 WLAN_EID_HP_PARAMS = 8, 1131 WLAN_EID_HP_TABLE = 9, 1132 WLAN_EID_REQUEST = 10, 1133 1134 WLAN_EID_QBSS_LOAD = 11, 1135 WLAN_EID_EDCA_PARAM_SET = 12, 1136 WLAN_EID_TSPEC = 13, 1137 WLAN_EID_TCLAS = 14, 1138 WLAN_EID_SCHEDULE = 15, 1139 WLAN_EID_TS_DELAY = 43, 1140 WLAN_EID_TCLAS_PROCESSING = 44, 1141 WLAN_EID_QOS_CAPA = 46, 1142 /* 802.11s 1143 * 1144 * All mesh EID numbers are pending IEEE 802.11 ANA approval. 1145 * The numbers have been incremented from those suggested in 1146 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with 1147 * EXT_SUPP_RATES. 1148 */ 1149 WLAN_EID_MESH_CONFIG = 51, 1150 WLAN_EID_MESH_ID = 52, 1151 WLAN_EID_PEER_LINK = 55, 1152 WLAN_EID_PREQ = 68, 1153 WLAN_EID_PREP = 69, 1154 WLAN_EID_PERR = 70, 1155 WLAN_EID_RANN = 49, /* compatible with FreeBSD */ 1156 1157 WLAN_EID_PWR_CONSTRAINT = 32, 1158 WLAN_EID_PWR_CAPABILITY = 33, 1159 WLAN_EID_TPC_REQUEST = 34, 1160 WLAN_EID_TPC_REPORT = 35, 1161 WLAN_EID_SUPPORTED_CHANNELS = 36, 1162 WLAN_EID_CHANNEL_SWITCH = 37, 1163 WLAN_EID_MEASURE_REQUEST = 38, 1164 WLAN_EID_MEASURE_REPORT = 39, 1165 WLAN_EID_QUIET = 40, 1166 WLAN_EID_IBSS_DFS = 41, 1167 1168 WLAN_EID_ERP_INFO = 42, 1169 WLAN_EID_EXT_SUPP_RATES = 50, 1170 1171 WLAN_EID_HT_CAPABILITY = 45, 1172 WLAN_EID_HT_INFORMATION = 61, 1173 1174 WLAN_EID_RSN = 48, 1175 WLAN_EID_MMIE = 76, 1176 WLAN_EID_WPA = 221, 1177 WLAN_EID_GENERIC = 221, 1178 WLAN_EID_VENDOR_SPECIFIC = 221, 1179 WLAN_EID_QOS_PARAMETER = 222, 1180 1181 WLAN_EID_AP_CHAN_REPORT = 51, 1182 WLAN_EID_NEIGHBOR_REPORT = 52, 1183 WLAN_EID_RCPI = 53, 1184 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63, 1185 WLAN_EID_ANTENNA_INFO = 64, 1186 WLAN_EID_RSNI = 65, 1187 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66, 1188 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67, 1189 WLAN_EID_BSS_AC_ACCESS_DELAY = 68, 1190 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70, 1191 WLAN_EID_MULTIPLE_BSSID = 71, 1192 1193 WLAN_EID_MOBILITY_DOMAIN = 54, 1194 WLAN_EID_FAST_BSS_TRANSITION = 55, 1195 WLAN_EID_TIMEOUT_INTERVAL = 56, 1196 WLAN_EID_RIC_DATA = 57, 1197 WLAN_EID_RIC_DESCRIPTOR = 75, 1198 1199 WLAN_EID_DSE_REGISTERED_LOCATION = 58, 1200 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59, 1201 WLAN_EID_EXT_CHANSWITCH_ANN = 60, 1202}; 1203 1204/* Action category code */ 1205enum ieee80211_category { 1206 WLAN_CATEGORY_SPECTRUM_MGMT = 0, 1207 WLAN_CATEGORY_QOS = 1, 1208 WLAN_CATEGORY_DLS = 2, 1209 WLAN_CATEGORY_BACK = 3, 1210 WLAN_CATEGORY_PUBLIC = 4, 1211 WLAN_CATEGORY_HT = 7, 1212 WLAN_CATEGORY_SA_QUERY = 8, 1213 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9, 1214 WLAN_CATEGORY_WMM = 17, 1215 WLAN_CATEGORY_MESH_PLINK = 30, /* Pending ANA approval */ 1216 WLAN_CATEGORY_MESH_PATH_SEL = 32, /* Pending ANA approval */ 1217 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, 1218 WLAN_CATEGORY_VENDOR_SPECIFIC = 127, 1219}; 1220 1221/* SPECTRUM_MGMT action code */ 1222enum ieee80211_spectrum_mgmt_actioncode { 1223 WLAN_ACTION_SPCT_MSR_REQ = 0, 1224 WLAN_ACTION_SPCT_MSR_RPRT = 1, 1225 WLAN_ACTION_SPCT_TPC_REQ = 2, 1226 WLAN_ACTION_SPCT_TPC_RPRT = 3, 1227 WLAN_ACTION_SPCT_CHL_SWITCH = 4, 1228}; 1229 1230/* HT action codes */ 1231enum ieee80211_ht_actioncode { 1232 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0, 1233 WLAN_HT_ACTION_SMPS = 1, 1234 WLAN_HT_ACTION_PSMP = 2, 1235 WLAN_HT_ACTION_PCO_PHASE = 3, 1236 WLAN_HT_ACTION_CSI = 4, 1237 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5, 1238 WLAN_HT_ACTION_COMPRESSED_BF = 6, 1239 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, 1240}; 1241 1242/* Security key length */ 1243enum ieee80211_key_len { 1244 WLAN_KEY_LEN_WEP40 = 5, 1245 WLAN_KEY_LEN_WEP104 = 13, 1246 WLAN_KEY_LEN_CCMP = 16, 1247 WLAN_KEY_LEN_TKIP = 32, 1248 WLAN_KEY_LEN_AES_CMAC = 16, 1249}; 1250 1251/* 1252 * IEEE 802.11-2007 7.3.2.9 Country information element 1253 * 1254 * Minimum length is 8 octets, ie len must be evenly 1255 * divisible by 2 1256 */ 1257 1258/* Although the spec says 8 I'm seeing 6 in practice */ 1259#define IEEE80211_COUNTRY_IE_MIN_LEN 6 1260 1261/* 1262 * For regulatory extension stuff see IEEE 802.11-2007 1263 * Annex I (page 1141) and Annex J (page 1147). Also 1264 * review 7.3.2.9. 1265 * 1266 * When dot11RegulatoryClassesRequired is true and the 1267 * first_channel/reg_extension_id is >= 201 then the IE 1268 * compromises of the 'ext' struct represented below: 1269 * 1270 * - Regulatory extension ID - when generating IE this just needs 1271 * to be monotonically increasing for each triplet passed in 1272 * the IE 1273 * - Regulatory class - index into set of rules 1274 * - Coverage class - index into air propagation time (Table 7-27), 1275 * in microseconds, you can compute the air propagation time from 1276 * the index by multiplying by 3, so index 10 yields a propagation 1277 * of 10 us. Valid values are 0-31, values 32-255 are not defined 1278 * yet. A value of 0 inicates air propagation of <= 1 us. 1279 * 1280 * See also Table I.2 for Emission limit sets and table 1281 * I.3 for Behavior limit sets. Table J.1 indicates how to map 1282 * a reg_class to an emission limit set and behavior limit set. 1283 */ 1284#define IEEE80211_COUNTRY_EXTENSION_ID 201 1285 1286/* 1287 * Channels numbers in the IE must be monotonically increasing 1288 * if dot11RegulatoryClassesRequired is not true. 1289 * 1290 * If dot11RegulatoryClassesRequired is true consecutive 1291 * subband triplets following a regulatory triplet shall 1292 * have monotonically increasing first_channel number fields. 1293 * 1294 * Channel numbers shall not overlap. 1295 * 1296 * Note that max_power is signed. 1297 */ 1298struct ieee80211_country_ie_triplet { 1299 union { 1300 struct { 1301 u8 first_channel; 1302 u8 num_channels; 1303 s8 max_power; 1304 } __attribute__ ((packed)) chans; 1305 struct { 1306 u8 reg_extension_id; 1307 u8 reg_class; 1308 u8 coverage_class; 1309 } __attribute__ ((packed)) ext; 1310 }; 1311} __attribute__ ((packed)); 1312 1313enum ieee80211_timeout_interval_type { 1314 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */, 1315 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */, 1316 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */, 1317}; 1318 1319/* BACK action code */ 1320enum ieee80211_back_actioncode { 1321 WLAN_ACTION_ADDBA_REQ = 0, 1322 WLAN_ACTION_ADDBA_RESP = 1, 1323 WLAN_ACTION_DELBA = 2, 1324}; 1325 1326/* BACK (block-ack) parties */ 1327enum ieee80211_back_parties { 1328 WLAN_BACK_RECIPIENT = 0, 1329 WLAN_BACK_INITIATOR = 1, 1330}; 1331 1332/* SA Query action */ 1333enum ieee80211_sa_query_action { 1334 WLAN_ACTION_SA_QUERY_REQUEST = 0, 1335 WLAN_ACTION_SA_QUERY_RESPONSE = 1, 1336}; 1337 1338 1339/* A-MSDU 802.11n */ 1340#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080 1341 1342/* cipher suite selectors */ 1343#define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 1344#define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 1345#define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 1346/* reserved: 0x000FAC03 */ 1347#define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 1348#define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 1349#define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 1350 1351/* AKM suite selectors */ 1352#define WLAN_AKM_SUITE_8021X 0x000FAC01 1353#define WLAN_AKM_SUITE_PSK 0x000FAC02 1354 1355#define WLAN_MAX_KEY_LEN 32 1356 1357#define WLAN_PMKID_LEN 16 1358 1359/** 1360 * ieee80211_get_qos_ctl - get pointer to qos control bytes 1361 * @hdr: the frame 1362 * 1363 * The qos ctrl bytes come after the frame_control, duration, seq_num 1364 * and 3 or 4 addresses of length ETH_ALEN. 1365 * 3 addr: 2 + 2 + 2 + 3*6 = 24 1366 * 4 addr: 2 + 2 + 2 + 4*6 = 30 1367 */ 1368static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr) 1369{ 1370 if (ieee80211_has_a4(hdr->frame_control)) 1371 return (u8 *)hdr + 30; 1372 else 1373 return (u8 *)hdr + 24; 1374} 1375 1376/** 1377 * ieee80211_get_SA - get pointer to SA 1378 * @hdr: the frame 1379 * 1380 * Given an 802.11 frame, this function returns the offset 1381 * to the source address (SA). It does not verify that the 1382 * header is long enough to contain the address, and the 1383 * header must be long enough to contain the frame control 1384 * field. 1385 */ 1386static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr) 1387{ 1388 if (ieee80211_has_a4(hdr->frame_control)) 1389 return hdr->addr4; 1390 if (ieee80211_has_fromds(hdr->frame_control)) 1391 return hdr->addr3; 1392 return hdr->addr2; 1393} 1394 1395/** 1396 * ieee80211_get_DA - get pointer to DA 1397 * @hdr: the frame 1398 * 1399 * Given an 802.11 frame, this function returns the offset 1400 * to the destination address (DA). It does not verify that 1401 * the header is long enough to contain the address, and the 1402 * header must be long enough to contain the frame control 1403 * field. 1404 */ 1405static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) 1406{ 1407 if (ieee80211_has_tods(hdr->frame_control)) 1408 return hdr->addr3; 1409 else 1410 return hdr->addr1; 1411} 1412 1413/** 1414 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame 1415 * @hdr: the frame (buffer must include at least the first octet of payload) 1416 */ 1417static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) 1418{ 1419 if (ieee80211_is_disassoc(hdr->frame_control) || 1420 ieee80211_is_deauth(hdr->frame_control)) 1421 return true; 1422 1423 if (ieee80211_is_action(hdr->frame_control)) { 1424 u8 *category; 1425 1426 /* 1427 * Action frames, excluding Public Action frames, are Robust 1428 * Management Frames. However, if we are looking at a Protected 1429 * frame, skip the check since the data may be encrypted and 1430 * the frame has already been found to be a Robust Management 1431 * Frame (by the other end). 1432 */ 1433 if (ieee80211_has_protected(hdr->frame_control)) 1434 return true; 1435 category = ((u8 *) hdr) + 24; 1436 return *category != WLAN_CATEGORY_PUBLIC && 1437 *category != WLAN_CATEGORY_HT && 1438 *category != WLAN_CATEGORY_VENDOR_SPECIFIC; 1439 } 1440 1441 return false; 1442} 1443 1444/** 1445 * ieee80211_fhss_chan_to_freq - get channel frequency 1446 * @channel: the FHSS channel 1447 * 1448 * Convert IEEE802.11 FHSS channel to frequency (MHz) 1449 * Ref IEEE 802.11-2007 section 14.6 1450 */ 1451static inline int ieee80211_fhss_chan_to_freq(int channel) 1452{ 1453 if ((channel > 1) && (channel < 96)) 1454 return channel + 2400; 1455 else 1456 return -1; 1457} 1458 1459/** 1460 * ieee80211_freq_to_fhss_chan - get channel 1461 * @freq: the channels frequency 1462 * 1463 * Convert frequency (MHz) to IEEE802.11 FHSS channel 1464 * Ref IEEE 802.11-2007 section 14.6 1465 */ 1466static inline int ieee80211_freq_to_fhss_chan(int freq) 1467{ 1468 if ((freq > 2401) && (freq < 2496)) 1469 return freq - 2400; 1470 else 1471 return -1; 1472} 1473 1474/** 1475 * ieee80211_dsss_chan_to_freq - get channel center frequency 1476 * @channel: the DSSS channel 1477 * 1478 * Convert IEEE802.11 DSSS channel to the center frequency (MHz). 1479 * Ref IEEE 802.11-2007 section 15.6 1480 */ 1481static inline int ieee80211_dsss_chan_to_freq(int channel) 1482{ 1483 if ((channel > 0) && (channel < 14)) 1484 return 2407 + (channel * 5); 1485 else if (channel == 14) 1486 return 2484; 1487 else 1488 return -1; 1489} 1490 1491/** 1492 * ieee80211_freq_to_dsss_chan - get channel 1493 * @freq: the frequency 1494 * 1495 * Convert frequency (MHz) to IEEE802.11 DSSS channel 1496 * Ref IEEE 802.11-2007 section 15.6 1497 * 1498 * This routine selects the channel with the closest center frequency. 1499 */ 1500static inline int ieee80211_freq_to_dsss_chan(int freq) 1501{ 1502 if ((freq >= 2410) && (freq < 2475)) 1503 return (freq - 2405) / 5; 1504 else if ((freq >= 2482) && (freq < 2487)) 1505 return 14; 1506 else 1507 return -1; 1508} 1509 1510/* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back 1511 * Ref IEEE 802.11-2007 section 18.4.6.2 1512 * 1513 * The channels and frequencies are the same as those defined for DSSS 1514 */ 1515#define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan) 1516#define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq) 1517 1518/* Convert IEEE802.11 ERP channel to frequency (MHz) and back 1519 * Ref IEEE 802.11-2007 section 19.4.2 1520 */ 1521#define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan) 1522#define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq) 1523 1524/** 1525 * ieee80211_ofdm_chan_to_freq - get channel center frequency 1526 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1527 * @channel: the OFDM channel 1528 * 1529 * Convert IEEE802.11 OFDM channel to center frequency (MHz) 1530 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1531 */ 1532static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel) 1533{ 1534 if ((channel > 0) && (channel <= 200) && 1535 (s_freq >= 4000)) 1536 return s_freq + (channel * 5); 1537 else 1538 return -1; 1539} 1540 1541/** 1542 * ieee80211_freq_to_ofdm_channel - get channel 1543 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1544 * @freq: the frequency 1545 * 1546 * Convert frequency (MHz) to IEEE802.11 OFDM channel 1547 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1548 * 1549 * This routine selects the channel with the closest center frequency. 1550 */ 1551static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq) 1552{ 1553 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) && 1554 (s_freq >= 4000)) 1555 return (freq + 2 - s_freq) / 5; 1556 else 1557 return -1; 1558} 1559 1560/** 1561 * ieee80211_tu_to_usec - convert time units (TU) to microseconds 1562 * @tu: the TUs 1563 */ 1564static inline unsigned long ieee80211_tu_to_usec(unsigned long tu) 1565{ 1566 return 1024 * tu; 1567} 1568 1569/** 1570 * ieee80211_check_tim - check if AID bit is set in TIM 1571 * @tim: the TIM IE 1572 * @tim_len: length of the TIM IE 1573 * @aid: the AID to look for 1574 */ 1575static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim, 1576 u8 tim_len, u16 aid) 1577{ 1578 u8 mask; 1579 u8 index, indexn1, indexn2; 1580 1581 if (unlikely(!tim || tim_len < sizeof(*tim))) 1582 return false; 1583 1584 aid &= 0x3fff; 1585 index = aid / 8; 1586 mask = 1 << (aid & 7); 1587 1588 indexn1 = tim->bitmap_ctrl & 0xfe; 1589 indexn2 = tim_len + indexn1 - 4; 1590 1591 if (index < indexn1 || index > indexn2) 1592 return false; 1593 1594 index -= indexn1; 1595 1596 return !!(tim->virtual_map[index] & mask); 1597} 1598 1599#endif /* LINUX_IEEE80211_H */ 1600