1 /* 2 * IEEE 802.11 defines 3 * 4 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 5 * <[email protected]> 6 * Copyright (c) 2002-2003, Jouni Malinen <[email protected]> 7 * Copyright (c) 2005, Devicescape Software, Inc. 8 * Copyright (c) 2006, Michael Wu <[email protected]> 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 IEEE80211_H 16 #define IEEE80211_H 17 18 #include <linux/types.h> 19 #include <asm/byteorder.h> 20 21 #define FCS_LEN 4 22 23 #define IEEE80211_FCTL_VERS 0x0003 24 #define IEEE80211_FCTL_FTYPE 0x000c 25 #define IEEE80211_FCTL_STYPE 0x00f0 26 #define IEEE80211_FCTL_TODS 0x0100 27 #define IEEE80211_FCTL_FROMDS 0x0200 28 #define IEEE80211_FCTL_MOREFRAGS 0x0400 29 #define IEEE80211_FCTL_RETRY 0x0800 30 #define IEEE80211_FCTL_PM 0x1000 31 #define IEEE80211_FCTL_MOREDATA 0x2000 32 #define IEEE80211_FCTL_PROTECTED 0x4000 33 #define IEEE80211_FCTL_ORDER 0x8000 34 35 #define IEEE80211_SCTL_FRAG 0x000F 36 #define IEEE80211_SCTL_SEQ 0xFFF0 37 38 #define IEEE80211_FTYPE_MGMT 0x0000 39 #define IEEE80211_FTYPE_CTL 0x0004 40 #define IEEE80211_FTYPE_DATA 0x0008 41 42 /* management */ 43 #define IEEE80211_STYPE_ASSOC_REQ 0x0000 44 #define IEEE80211_STYPE_ASSOC_RESP 0x0010 45 #define IEEE80211_STYPE_REASSOC_REQ 0x0020 46 #define IEEE80211_STYPE_REASSOC_RESP 0x0030 47 #define IEEE80211_STYPE_PROBE_REQ 0x0040 48 #define IEEE80211_STYPE_PROBE_RESP 0x0050 49 #define IEEE80211_STYPE_BEACON 0x0080 50 #define IEEE80211_STYPE_ATIM 0x0090 51 #define IEEE80211_STYPE_DISASSOC 0x00A0 52 #define IEEE80211_STYPE_AUTH 0x00B0 53 #define IEEE80211_STYPE_DEAUTH 0x00C0 54 #define IEEE80211_STYPE_ACTION 0x00D0 55 56 /* control */ 57 #define IEEE80211_STYPE_BACK_REQ 0x0080 58 #define IEEE80211_STYPE_BACK 0x0090 59 #define IEEE80211_STYPE_PSPOLL 0x00A0 60 #define IEEE80211_STYPE_RTS 0x00B0 61 #define IEEE80211_STYPE_CTS 0x00C0 62 #define IEEE80211_STYPE_ACK 0x00D0 63 #define IEEE80211_STYPE_CFEND 0x00E0 64 #define IEEE80211_STYPE_CFENDACK 0x00F0 65 66 /* data */ 67 #define IEEE80211_STYPE_DATA 0x0000 68 #define IEEE80211_STYPE_DATA_CFACK 0x0010 69 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020 70 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030 71 #define IEEE80211_STYPE_NULLFUNC 0x0040 72 #define IEEE80211_STYPE_CFACK 0x0050 73 #define IEEE80211_STYPE_CFPOLL 0x0060 74 #define IEEE80211_STYPE_CFACKPOLL 0x0070 75 #define IEEE80211_STYPE_QOS_DATA 0x0080 76 #define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090 77 #define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0 78 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0 79 #define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0 80 #define IEEE80211_STYPE_QOS_CFACK 0x00D0 81 #define IEEE80211_STYPE_QOS_CFPOLL 0x00E0 82 #define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0 83 84 85 /* miscellaneous IEEE 802.11 constants */ 86 #define IEEE80211_MAX_FRAG_THRESHOLD 2352 87 #define IEEE80211_MAX_RTS_THRESHOLD 2353 88 #define IEEE80211_MAX_AID 2007 89 #define IEEE80211_MAX_TIM_LEN 251 90 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section 91 6.2.1.1.2. 92 93 802.11e clarifies the figure in section 7.1.2. The frame body is 94 up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */ 95 #define IEEE80211_MAX_DATA_LEN 2304 96 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */ 97 #define IEEE80211_MAX_FRAME_LEN 2352 98 99 #define IEEE80211_MAX_SSID_LEN 32 100 #define IEEE80211_MAX_MESH_ID_LEN 32 101 #define IEEE80211_QOS_CTL_LEN 2 102 #define IEEE80211_QOS_CTL_TID_MASK 0x000F 103 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007 104 105 struct ieee80211_hdr { 106 __le16 frame_control; 107 __le16 duration_id; 108 u8 addr1[6]; 109 u8 addr2[6]; 110 u8 addr3[6]; 111 __le16 seq_ctrl; 112 u8 addr4[6]; 113 } __attribute__ ((packed)); 114 115 /** 116 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set 117 * @fc: frame control bytes in little-endian byteorder 118 */ 119 static inline int ieee80211_has_tods(__le16 fc) 120 { 121 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0; 122 } 123 124 /** 125 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set 126 * @fc: frame control bytes in little-endian byteorder 127 */ 128 static inline int ieee80211_has_fromds(__le16 fc) 129 { 130 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0; 131 } 132 133 /** 134 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set 135 * @fc: frame control bytes in little-endian byteorder 136 */ 137 static inline int ieee80211_has_a4(__le16 fc) 138 { 139 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); 140 return (fc & tmp) == tmp; 141 } 142 143 /** 144 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set 145 * @fc: frame control bytes in little-endian byteorder 146 */ 147 static inline int ieee80211_has_morefrags(__le16 fc) 148 { 149 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0; 150 } 151 152 /** 153 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set 154 * @fc: frame control bytes in little-endian byteorder 155 */ 156 static inline int ieee80211_has_retry(__le16 fc) 157 { 158 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0; 159 } 160 161 /** 162 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set 163 * @fc: frame control bytes in little-endian byteorder 164 */ 165 static inline int ieee80211_has_pm(__le16 fc) 166 { 167 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0; 168 } 169 170 /** 171 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set 172 * @fc: frame control bytes in little-endian byteorder 173 */ 174 static inline int ieee80211_has_moredata(__le16 fc) 175 { 176 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0; 177 } 178 179 /** 180 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set 181 * @fc: frame control bytes in little-endian byteorder 182 */ 183 static inline int ieee80211_has_protected(__le16 fc) 184 { 185 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0; 186 } 187 188 /** 189 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set 190 * @fc: frame control bytes in little-endian byteorder 191 */ 192 static inline int ieee80211_has_order(__le16 fc) 193 { 194 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0; 195 } 196 197 /** 198 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT 199 * @fc: frame control bytes in little-endian byteorder 200 */ 201 static inline int ieee80211_is_mgmt(__le16 fc) 202 { 203 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 204 cpu_to_le16(IEEE80211_FTYPE_MGMT); 205 } 206 207 /** 208 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL 209 * @fc: frame control bytes in little-endian byteorder 210 */ 211 static inline int ieee80211_is_ctl(__le16 fc) 212 { 213 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 214 cpu_to_le16(IEEE80211_FTYPE_CTL); 215 } 216 217 /** 218 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA 219 * @fc: frame control bytes in little-endian byteorder 220 */ 221 static inline int ieee80211_is_data(__le16 fc) 222 { 223 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 224 cpu_to_le16(IEEE80211_FTYPE_DATA); 225 } 226 227 /** 228 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set 229 * @fc: frame control bytes in little-endian byteorder 230 */ 231 static inline int ieee80211_is_data_qos(__le16 fc) 232 { 233 /* 234 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need 235 * to check the one bit 236 */ 237 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) == 238 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA); 239 } 240 241 /** 242 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data 243 * @fc: frame control bytes in little-endian byteorder 244 */ 245 static inline int ieee80211_is_data_present(__le16 fc) 246 { 247 /* 248 * mask with 0x40 and test that that bit is clear to only return true 249 * for the data-containing substypes. 250 */ 251 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) == 252 cpu_to_le16(IEEE80211_FTYPE_DATA); 253 } 254 255 /** 256 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ 257 * @fc: frame control bytes in little-endian byteorder 258 */ 259 static inline int ieee80211_is_assoc_req(__le16 fc) 260 { 261 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 262 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ); 263 } 264 265 /** 266 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP 267 * @fc: frame control bytes in little-endian byteorder 268 */ 269 static inline int ieee80211_is_assoc_resp(__le16 fc) 270 { 271 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 272 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP); 273 } 274 275 /** 276 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ 277 * @fc: frame control bytes in little-endian byteorder 278 */ 279 static inline int ieee80211_is_reassoc_req(__le16 fc) 280 { 281 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 282 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ); 283 } 284 285 /** 286 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP 287 * @fc: frame control bytes in little-endian byteorder 288 */ 289 static inline int ieee80211_is_reassoc_resp(__le16 fc) 290 { 291 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 292 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP); 293 } 294 295 /** 296 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ 297 * @fc: frame control bytes in little-endian byteorder 298 */ 299 static inline int ieee80211_is_probe_req(__le16 fc) 300 { 301 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 302 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ); 303 } 304 305 /** 306 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP 307 * @fc: frame control bytes in little-endian byteorder 308 */ 309 static inline int ieee80211_is_probe_resp(__le16 fc) 310 { 311 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 312 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); 313 } 314 315 /** 316 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON 317 * @fc: frame control bytes in little-endian byteorder 318 */ 319 static inline int ieee80211_is_beacon(__le16 fc) 320 { 321 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 322 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON); 323 } 324 325 /** 326 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM 327 * @fc: frame control bytes in little-endian byteorder 328 */ 329 static inline int ieee80211_is_atim(__le16 fc) 330 { 331 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 332 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM); 333 } 334 335 /** 336 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC 337 * @fc: frame control bytes in little-endian byteorder 338 */ 339 static inline int ieee80211_is_disassoc(__le16 fc) 340 { 341 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 342 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC); 343 } 344 345 /** 346 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH 347 * @fc: frame control bytes in little-endian byteorder 348 */ 349 static inline int ieee80211_is_auth(__le16 fc) 350 { 351 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 352 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); 353 } 354 355 /** 356 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH 357 * @fc: frame control bytes in little-endian byteorder 358 */ 359 static inline int ieee80211_is_deauth(__le16 fc) 360 { 361 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 362 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH); 363 } 364 365 /** 366 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION 367 * @fc: frame control bytes in little-endian byteorder 368 */ 369 static inline int ieee80211_is_action(__le16 fc) 370 { 371 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 372 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); 373 } 374 375 /** 376 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ 377 * @fc: frame control bytes in little-endian byteorder 378 */ 379 static inline int ieee80211_is_back_req(__le16 fc) 380 { 381 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 382 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ); 383 } 384 385 /** 386 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK 387 * @fc: frame control bytes in little-endian byteorder 388 */ 389 static inline int ieee80211_is_back(__le16 fc) 390 { 391 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 392 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK); 393 } 394 395 /** 396 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL 397 * @fc: frame control bytes in little-endian byteorder 398 */ 399 static inline int ieee80211_is_pspoll(__le16 fc) 400 { 401 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 402 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); 403 } 404 405 /** 406 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS 407 * @fc: frame control bytes in little-endian byteorder 408 */ 409 static inline int ieee80211_is_rts(__le16 fc) 410 { 411 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 412 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); 413 } 414 415 /** 416 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS 417 * @fc: frame control bytes in little-endian byteorder 418 */ 419 static inline int ieee80211_is_cts(__le16 fc) 420 { 421 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 422 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); 423 } 424 425 /** 426 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK 427 * @fc: frame control bytes in little-endian byteorder 428 */ 429 static inline int ieee80211_is_ack(__le16 fc) 430 { 431 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 432 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK); 433 } 434 435 /** 436 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND 437 * @fc: frame control bytes in little-endian byteorder 438 */ 439 static inline int ieee80211_is_cfend(__le16 fc) 440 { 441 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 442 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND); 443 } 444 445 /** 446 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK 447 * @fc: frame control bytes in little-endian byteorder 448 */ 449 static inline int ieee80211_is_cfendack(__le16 fc) 450 { 451 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 452 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK); 453 } 454 455 /** 456 * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC 457 * @fc: frame control bytes in little-endian byteorder 458 */ 459 static inline int ieee80211_is_nullfunc(__le16 fc) 460 { 461 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 462 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC); 463 } 464 465 struct ieee80211s_hdr { 466 u8 flags; 467 u8 ttl; 468 __le32 seqnum; 469 u8 eaddr1[6]; 470 u8 eaddr2[6]; 471 u8 eaddr3[6]; 472 } __attribute__ ((packed)); 473 474 /** 475 * struct ieee80211_quiet_ie 476 * 477 * This structure refers to "Quiet information element" 478 */ 479 struct ieee80211_quiet_ie { 480 u8 count; 481 u8 period; 482 __le16 duration; 483 __le16 offset; 484 } __attribute__ ((packed)); 485 486 /** 487 * struct ieee80211_msrment_ie 488 * 489 * This structure refers to "Measurement Request/Report information element" 490 */ 491 struct ieee80211_msrment_ie { 492 u8 token; 493 u8 mode; 494 u8 type; 495 u8 request[0]; 496 } __attribute__ ((packed)); 497 498 /** 499 * struct ieee80211_channel_sw_ie 500 * 501 * This structure refers to "Channel Switch Announcement information element" 502 */ 503 struct ieee80211_channel_sw_ie { 504 u8 mode; 505 u8 new_ch_num; 506 u8 count; 507 } __attribute__ ((packed)); 508 509 struct ieee80211_mgmt { 510 __le16 frame_control; 511 __le16 duration; 512 u8 da[6]; 513 u8 sa[6]; 514 u8 bssid[6]; 515 __le16 seq_ctrl; 516 union { 517 struct { 518 __le16 auth_alg; 519 __le16 auth_transaction; 520 __le16 status_code; 521 /* possibly followed by Challenge text */ 522 u8 variable[0]; 523 } __attribute__ ((packed)) auth; 524 struct { 525 __le16 reason_code; 526 } __attribute__ ((packed)) deauth; 527 struct { 528 __le16 capab_info; 529 __le16 listen_interval; 530 /* followed by SSID and Supported rates */ 531 u8 variable[0]; 532 } __attribute__ ((packed)) assoc_req; 533 struct { 534 __le16 capab_info; 535 __le16 status_code; 536 __le16 aid; 537 /* followed by Supported rates */ 538 u8 variable[0]; 539 } __attribute__ ((packed)) assoc_resp, reassoc_resp; 540 struct { 541 __le16 capab_info; 542 __le16 listen_interval; 543 u8 current_ap[6]; 544 /* followed by SSID and Supported rates */ 545 u8 variable[0]; 546 } __attribute__ ((packed)) reassoc_req; 547 struct { 548 __le16 reason_code; 549 } __attribute__ ((packed)) disassoc; 550 struct { 551 __le64 timestamp; 552 __le16 beacon_int; 553 __le16 capab_info; 554 /* followed by some of SSID, Supported rates, 555 * FH Params, DS Params, CF Params, IBSS Params, TIM */ 556 u8 variable[0]; 557 } __attribute__ ((packed)) beacon; 558 struct { 559 /* only variable items: SSID, Supported rates */ 560 u8 variable[0]; 561 } __attribute__ ((packed)) probe_req; 562 struct { 563 __le64 timestamp; 564 __le16 beacon_int; 565 __le16 capab_info; 566 /* followed by some of SSID, Supported rates, 567 * FH Params, DS Params, CF Params, IBSS Params */ 568 u8 variable[0]; 569 } __attribute__ ((packed)) probe_resp; 570 struct { 571 u8 category; 572 union { 573 struct { 574 u8 action_code; 575 u8 dialog_token; 576 u8 status_code; 577 u8 variable[0]; 578 } __attribute__ ((packed)) wme_action; 579 struct{ 580 u8 action_code; 581 u8 element_id; 582 u8 length; 583 struct ieee80211_channel_sw_ie sw_elem; 584 } __attribute__((packed)) chan_switch; 585 struct{ 586 u8 action_code; 587 u8 dialog_token; 588 u8 element_id; 589 u8 length; 590 struct ieee80211_msrment_ie msr_elem; 591 } __attribute__((packed)) measurement; 592 struct{ 593 u8 action_code; 594 u8 dialog_token; 595 __le16 capab; 596 __le16 timeout; 597 __le16 start_seq_num; 598 } __attribute__((packed)) addba_req; 599 struct{ 600 u8 action_code; 601 u8 dialog_token; 602 __le16 status; 603 __le16 capab; 604 __le16 timeout; 605 } __attribute__((packed)) addba_resp; 606 struct{ 607 u8 action_code; 608 __le16 params; 609 __le16 reason_code; 610 } __attribute__((packed)) delba; 611 struct{ 612 u8 action_code; 613 /* capab_info for open and confirm, 614 * reason for close 615 */ 616 __le16 aux; 617 /* Followed in plink_confirm by status 618 * code, AID and supported rates, 619 * and directly by supported rates in 620 * plink_open and plink_close 621 */ 622 u8 variable[0]; 623 } __attribute__((packed)) plink_action; 624 struct{ 625 u8 action_code; 626 u8 variable[0]; 627 } __attribute__((packed)) mesh_action; 628 } u; 629 } __attribute__ ((packed)) action; 630 } u; 631 } __attribute__ ((packed)); 632 633 634 /* Control frames */ 635 struct ieee80211_rts { 636 __le16 frame_control; 637 __le16 duration; 638 u8 ra[6]; 639 u8 ta[6]; 640 } __attribute__ ((packed)); 641 642 struct ieee80211_cts { 643 __le16 frame_control; 644 __le16 duration; 645 u8 ra[6]; 646 } __attribute__ ((packed)); 647 648 /** 649 * struct ieee80211_bar - HT Block Ack Request 650 * 651 * This structure refers to "HT BlockAckReq" as 652 * described in 802.11n draft section 7.2.1.7.1 653 */ 654 struct ieee80211_bar { 655 __le16 frame_control; 656 __le16 duration; 657 __u8 ra[6]; 658 __u8 ta[6]; 659 __le16 control; 660 __le16 start_seq_num; 661 } __attribute__((packed)); 662 663 /* 802.11 BAR control masks */ 664 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 665 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 666 667 /** 668 * struct ieee80211_ht_cap - HT capabilities 669 * 670 * This structure refers to "HT capabilities element" as 671 * described in 802.11n draft section 7.3.2.52 672 */ 673 struct ieee80211_ht_cap { 674 __le16 cap_info; 675 u8 ampdu_params_info; 676 u8 supp_mcs_set[16]; 677 __le16 extended_ht_cap_info; 678 __le32 tx_BF_cap_info; 679 u8 antenna_selection_info; 680 } __attribute__ ((packed)); 681 682 /** 683 * struct ieee80211_ht_cap - HT additional information 684 * 685 * This structure refers to "HT information element" as 686 * described in 802.11n draft section 7.3.2.53 687 */ 688 struct ieee80211_ht_addt_info { 689 u8 control_chan; 690 u8 ht_param; 691 __le16 operation_mode; 692 __le16 stbc_param; 693 u8 basic_set[16]; 694 } __attribute__ ((packed)); 695 696 /* 802.11n HT capabilities masks */ 697 #define IEEE80211_HT_CAP_SUP_WIDTH 0x0002 698 #define IEEE80211_HT_CAP_MIMO_PS 0x000C 699 #define IEEE80211_HT_CAP_GRN_FLD 0x0010 700 #define IEEE80211_HT_CAP_SGI_20 0x0020 701 #define IEEE80211_HT_CAP_SGI_40 0x0040 702 #define IEEE80211_HT_CAP_DELAY_BA 0x0400 703 #define IEEE80211_HT_CAP_MAX_AMSDU 0x0800 704 /* 802.11n HT capability AMPDU settings */ 705 #define IEEE80211_HT_CAP_AMPDU_FACTOR 0x03 706 #define IEEE80211_HT_CAP_AMPDU_DENSITY 0x1C 707 /* 802.11n HT capability MSC set */ 708 #define IEEE80211_SUPP_MCS_SET_UEQM 4 709 #define IEEE80211_HT_CAP_MAX_STREAMS 4 710 #define IEEE80211_SUPP_MCS_SET_LEN 10 711 /* maximum streams the spec allows */ 712 #define IEEE80211_HT_CAP_MCS_TX_DEFINED 0x01 713 #define IEEE80211_HT_CAP_MCS_TX_RX_DIFF 0x02 714 #define IEEE80211_HT_CAP_MCS_TX_STREAMS 0x0C 715 #define IEEE80211_HT_CAP_MCS_TX_UEQM 0x10 716 /* 802.11n HT IE masks */ 717 #define IEEE80211_HT_IE_CHA_SEC_OFFSET 0x03 718 #define IEEE80211_HT_IE_CHA_SEC_NONE 0x00 719 #define IEEE80211_HT_IE_CHA_SEC_ABOVE 0x01 720 #define IEEE80211_HT_IE_CHA_SEC_BELOW 0x03 721 #define IEEE80211_HT_IE_CHA_WIDTH 0x04 722 #define IEEE80211_HT_IE_HT_PROTECTION 0x0003 723 #define IEEE80211_HT_IE_NON_GF_STA_PRSNT 0x0004 724 #define IEEE80211_HT_IE_NON_HT_STA_PRSNT 0x0010 725 726 /* MIMO Power Save Modes */ 727 #define WLAN_HT_CAP_MIMO_PS_STATIC 0 728 #define WLAN_HT_CAP_MIMO_PS_DYNAMIC 1 729 #define WLAN_HT_CAP_MIMO_PS_INVALID 2 730 #define WLAN_HT_CAP_MIMO_PS_DISABLED 3 731 732 /* Authentication algorithms */ 733 #define WLAN_AUTH_OPEN 0 734 #define WLAN_AUTH_SHARED_KEY 1 735 #define WLAN_AUTH_FAST_BSS_TRANSITION 2 736 #define WLAN_AUTH_LEAP 128 737 738 #define WLAN_AUTH_CHALLENGE_LEN 128 739 740 #define WLAN_CAPABILITY_ESS (1<<0) 741 #define WLAN_CAPABILITY_IBSS (1<<1) 742 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2) 743 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) 744 #define WLAN_CAPABILITY_PRIVACY (1<<4) 745 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) 746 #define WLAN_CAPABILITY_PBCC (1<<6) 747 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) 748 749 /* 802.11h */ 750 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) 751 #define WLAN_CAPABILITY_QOS (1<<9) 752 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) 753 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) 754 /* measurement */ 755 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0) 756 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1) 757 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2) 758 759 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0 760 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1 761 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2 762 763 764 /* 802.11g ERP information element */ 765 #define WLAN_ERP_NON_ERP_PRESENT (1<<0) 766 #define WLAN_ERP_USE_PROTECTION (1<<1) 767 #define WLAN_ERP_BARKER_PREAMBLE (1<<2) 768 769 /* WLAN_ERP_BARKER_PREAMBLE values */ 770 enum { 771 WLAN_ERP_PREAMBLE_SHORT = 0, 772 WLAN_ERP_PREAMBLE_LONG = 1, 773 }; 774 775 /* Status codes */ 776 enum ieee80211_statuscode { 777 WLAN_STATUS_SUCCESS = 0, 778 WLAN_STATUS_UNSPECIFIED_FAILURE = 1, 779 WLAN_STATUS_CAPS_UNSUPPORTED = 10, 780 WLAN_STATUS_REASSOC_NO_ASSOC = 11, 781 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12, 782 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13, 783 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14, 784 WLAN_STATUS_CHALLENGE_FAIL = 15, 785 WLAN_STATUS_AUTH_TIMEOUT = 16, 786 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17, 787 WLAN_STATUS_ASSOC_DENIED_RATES = 18, 788 /* 802.11b */ 789 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19, 790 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20, 791 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21, 792 /* 802.11h */ 793 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22, 794 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23, 795 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24, 796 /* 802.11g */ 797 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25, 798 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26, 799 /* 802.11i */ 800 WLAN_STATUS_INVALID_IE = 40, 801 WLAN_STATUS_INVALID_GROUP_CIPHER = 41, 802 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42, 803 WLAN_STATUS_INVALID_AKMP = 43, 804 WLAN_STATUS_UNSUPP_RSN_VERSION = 44, 805 WLAN_STATUS_INVALID_RSN_IE_CAP = 45, 806 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46, 807 /* 802.11e */ 808 WLAN_STATUS_UNSPECIFIED_QOS = 32, 809 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33, 810 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34, 811 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35, 812 WLAN_STATUS_REQUEST_DECLINED = 37, 813 WLAN_STATUS_INVALID_QOS_PARAM = 38, 814 WLAN_STATUS_CHANGE_TSPEC = 39, 815 WLAN_STATUS_WAIT_TS_DELAY = 47, 816 WLAN_STATUS_NO_DIRECT_LINK = 48, 817 WLAN_STATUS_STA_NOT_PRESENT = 49, 818 WLAN_STATUS_STA_NOT_QSTA = 50, 819 }; 820 821 822 /* Reason codes */ 823 enum ieee80211_reasoncode { 824 WLAN_REASON_UNSPECIFIED = 1, 825 WLAN_REASON_PREV_AUTH_NOT_VALID = 2, 826 WLAN_REASON_DEAUTH_LEAVING = 3, 827 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4, 828 WLAN_REASON_DISASSOC_AP_BUSY = 5, 829 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6, 830 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7, 831 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8, 832 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9, 833 /* 802.11h */ 834 WLAN_REASON_DISASSOC_BAD_POWER = 10, 835 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11, 836 /* 802.11i */ 837 WLAN_REASON_INVALID_IE = 13, 838 WLAN_REASON_MIC_FAILURE = 14, 839 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, 840 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16, 841 WLAN_REASON_IE_DIFFERENT = 17, 842 WLAN_REASON_INVALID_GROUP_CIPHER = 18, 843 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19, 844 WLAN_REASON_INVALID_AKMP = 20, 845 WLAN_REASON_UNSUPP_RSN_VERSION = 21, 846 WLAN_REASON_INVALID_RSN_IE_CAP = 22, 847 WLAN_REASON_IEEE8021X_FAILED = 23, 848 WLAN_REASON_CIPHER_SUITE_REJECTED = 24, 849 /* 802.11e */ 850 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32, 851 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33, 852 WLAN_REASON_DISASSOC_LOW_ACK = 34, 853 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35, 854 WLAN_REASON_QSTA_LEAVE_QBSS = 36, 855 WLAN_REASON_QSTA_NOT_USE = 37, 856 WLAN_REASON_QSTA_REQUIRE_SETUP = 38, 857 WLAN_REASON_QSTA_TIMEOUT = 39, 858 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45, 859 }; 860 861 862 /* Information Element IDs */ 863 enum ieee80211_eid { 864 WLAN_EID_SSID = 0, 865 WLAN_EID_SUPP_RATES = 1, 866 WLAN_EID_FH_PARAMS = 2, 867 WLAN_EID_DS_PARAMS = 3, 868 WLAN_EID_CF_PARAMS = 4, 869 WLAN_EID_TIM = 5, 870 WLAN_EID_IBSS_PARAMS = 6, 871 WLAN_EID_CHALLENGE = 16, 872 /* 802.11d */ 873 WLAN_EID_COUNTRY = 7, 874 WLAN_EID_HP_PARAMS = 8, 875 WLAN_EID_HP_TABLE = 9, 876 WLAN_EID_REQUEST = 10, 877 /* 802.11e */ 878 WLAN_EID_QBSS_LOAD = 11, 879 WLAN_EID_EDCA_PARAM_SET = 12, 880 WLAN_EID_TSPEC = 13, 881 WLAN_EID_TCLAS = 14, 882 WLAN_EID_SCHEDULE = 15, 883 WLAN_EID_TS_DELAY = 43, 884 WLAN_EID_TCLAS_PROCESSING = 44, 885 WLAN_EID_QOS_CAPA = 46, 886 /* 802.11s 887 * 888 * All mesh EID numbers are pending IEEE 802.11 ANA approval. 889 * The numbers have been incremented from those suggested in 890 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with 891 * EXT_SUPP_RATES. 892 */ 893 WLAN_EID_MESH_CONFIG = 51, 894 WLAN_EID_MESH_ID = 52, 895 WLAN_EID_PEER_LINK = 55, 896 WLAN_EID_PREQ = 68, 897 WLAN_EID_PREP = 69, 898 WLAN_EID_PERR = 70, 899 /* 802.11h */ 900 WLAN_EID_PWR_CONSTRAINT = 32, 901 WLAN_EID_PWR_CAPABILITY = 33, 902 WLAN_EID_TPC_REQUEST = 34, 903 WLAN_EID_TPC_REPORT = 35, 904 WLAN_EID_SUPPORTED_CHANNELS = 36, 905 WLAN_EID_CHANNEL_SWITCH = 37, 906 WLAN_EID_MEASURE_REQUEST = 38, 907 WLAN_EID_MEASURE_REPORT = 39, 908 WLAN_EID_QUIET = 40, 909 WLAN_EID_IBSS_DFS = 41, 910 /* 802.11g */ 911 WLAN_EID_ERP_INFO = 42, 912 WLAN_EID_EXT_SUPP_RATES = 50, 913 /* 802.11n */ 914 WLAN_EID_HT_CAPABILITY = 45, 915 WLAN_EID_HT_EXTRA_INFO = 61, 916 /* 802.11i */ 917 WLAN_EID_RSN = 48, 918 WLAN_EID_WPA = 221, 919 WLAN_EID_GENERIC = 221, 920 WLAN_EID_VENDOR_SPECIFIC = 221, 921 WLAN_EID_QOS_PARAMETER = 222 922 }; 923 924 /* Action category code */ 925 enum ieee80211_category { 926 WLAN_CATEGORY_SPECTRUM_MGMT = 0, 927 WLAN_CATEGORY_QOS = 1, 928 WLAN_CATEGORY_DLS = 2, 929 WLAN_CATEGORY_BACK = 3, 930 WLAN_CATEGORY_WMM = 17, 931 }; 932 933 /* SPECTRUM_MGMT action code */ 934 enum ieee80211_spectrum_mgmt_actioncode { 935 WLAN_ACTION_SPCT_MSR_REQ = 0, 936 WLAN_ACTION_SPCT_MSR_RPRT = 1, 937 WLAN_ACTION_SPCT_TPC_REQ = 2, 938 WLAN_ACTION_SPCT_TPC_RPRT = 3, 939 WLAN_ACTION_SPCT_CHL_SWITCH = 4, 940 }; 941 942 /* BACK action code */ 943 enum ieee80211_back_actioncode { 944 WLAN_ACTION_ADDBA_REQ = 0, 945 WLAN_ACTION_ADDBA_RESP = 1, 946 WLAN_ACTION_DELBA = 2, 947 }; 948 949 /* BACK (block-ack) parties */ 950 enum ieee80211_back_parties { 951 WLAN_BACK_RECIPIENT = 0, 952 WLAN_BACK_INITIATOR = 1, 953 WLAN_BACK_TIMER = 2, 954 }; 955 956 /* A-MSDU 802.11n */ 957 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080 958 959 /* cipher suite selectors */ 960 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 961 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 962 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 963 /* reserved: 0x000FAC03 */ 964 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 965 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 966 967 #define WLAN_MAX_KEY_LEN 32 968 969 /** 970 * ieee80211_get_qos_ctl - get pointer to qos control bytes 971 * @hdr: the frame 972 * 973 * The qos ctrl bytes come after the frame_control, duration, seq_num 974 * and 3 or 4 addresses of length ETH_ALEN. 975 * 3 addr: 2 + 2 + 2 + 3*6 = 24 976 * 4 addr: 2 + 2 + 2 + 4*6 = 30 977 */ 978 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr) 979 { 980 if (ieee80211_has_a4(hdr->frame_control)) 981 return (u8 *)hdr + 30; 982 else 983 return (u8 *)hdr + 24; 984 } 985 986 /** 987 * ieee80211_get_SA - get pointer to SA 988 * @hdr: the frame 989 * 990 * Given an 802.11 frame, this function returns the offset 991 * to the source address (SA). It does not verify that the 992 * header is long enough to contain the address, and the 993 * header must be long enough to contain the frame control 994 * field. 995 */ 996 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr) 997 { 998 if (ieee80211_has_a4(hdr->frame_control)) 999 return hdr->addr4; 1000 if (ieee80211_has_fromds(hdr->frame_control)) 1001 return hdr->addr3; 1002 return hdr->addr2; 1003 } 1004 1005 /** 1006 * ieee80211_get_DA - get pointer to DA 1007 * @hdr: the frame 1008 * 1009 * Given an 802.11 frame, this function returns the offset 1010 * to the destination address (DA). It does not verify that 1011 * the header is long enough to contain the address, and the 1012 * header must be long enough to contain the frame control 1013 * field. 1014 */ 1015 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) 1016 { 1017 if (ieee80211_has_tods(hdr->frame_control)) 1018 return hdr->addr3; 1019 else 1020 return hdr->addr1; 1021 } 1022 1023 #endif /* IEEE80211_H */ 1024