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 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 4 142 143 struct 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)); 152 153 struct 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)); 161 162 struct 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 */ 176 static 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 */ 185 static 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 */ 194 static 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 */ 204 static 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 */ 213 static 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 */ 222 static 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 */ 231 static 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 */ 240 static 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 */ 249 static 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 */ 258 static 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 */ 268 static 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 */ 278 static 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 */ 288 static 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 */ 302 static 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 */ 316 static 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 */ 326 static 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 */ 336 static 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 */ 346 static 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 */ 356 static 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 */ 366 static 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 */ 376 static 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 */ 386 static 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 */ 396 static 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 */ 406 static 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 */ 416 static 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 */ 426 static 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 */ 436 static 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 */ 446 static 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 */ 456 static 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 */ 466 static 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 */ 476 static 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 */ 486 static 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 */ 496 static 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 */ 506 static 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 */ 516 static 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 */ 526 static 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 } 531 532 struct 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 */ 552 struct 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 */ 564 struct 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 */ 576 struct 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 */ 587 struct 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 */ 600 struct 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 */ 615 struct 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 2 625 626 struct 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) */ 763 struct 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 */ 772 struct ieee80211_rts { 773 __le16 frame_control; 774 __le16 duration; 775 u8 ra[6]; 776 u8 ta[6]; 777 } __attribute__ ((packed)); 778 779 struct ieee80211_cts { 780 __le16 frame_control; 781 __le16 duration; 782 u8 ra[6]; 783 } __attribute__ ((packed)); 784 785 struct 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 */ 798 struct 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 */ 823 struct 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 */ 857 struct 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 */ 896 enum 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 */ 906 enum 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 */ 923 struct 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 0xFFA0 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_SAE 3 990 #define WLAN_AUTH_LEAP 128 991 992 #define WLAN_AUTH_CHALLENGE_LEN 128 993 994 #define WLAN_CAPABILITY_ESS (1<<0) 995 #define WLAN_CAPABILITY_IBSS (1<<1) 996 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2) 997 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) 998 #define WLAN_CAPABILITY_PRIVACY (1<<4) 999 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) 1000 #define WLAN_CAPABILITY_PBCC (1<<6) 1001 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) 1002 1003 /* 802.11h */ 1004 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) 1005 #define WLAN_CAPABILITY_QOS (1<<9) 1006 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) 1007 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) 1008 /* measurement */ 1009 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0) 1010 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1) 1011 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2) 1012 1013 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0 1014 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1 1015 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2 1016 1017 1018 /* 802.11g ERP information element */ 1019 #define WLAN_ERP_NON_ERP_PRESENT (1<<0) 1020 #define WLAN_ERP_USE_PROTECTION (1<<1) 1021 #define WLAN_ERP_BARKER_PREAMBLE (1<<2) 1022 1023 /* WLAN_ERP_BARKER_PREAMBLE values */ 1024 enum { 1025 WLAN_ERP_PREAMBLE_SHORT = 0, 1026 WLAN_ERP_PREAMBLE_LONG = 1, 1027 }; 1028 1029 /* Status codes */ 1030 enum ieee80211_statuscode { 1031 WLAN_STATUS_SUCCESS = 0, 1032 WLAN_STATUS_UNSPECIFIED_FAILURE = 1, 1033 WLAN_STATUS_CAPS_UNSUPPORTED = 10, 1034 WLAN_STATUS_REASSOC_NO_ASSOC = 11, 1035 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12, 1036 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13, 1037 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14, 1038 WLAN_STATUS_CHALLENGE_FAIL = 15, 1039 WLAN_STATUS_AUTH_TIMEOUT = 16, 1040 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17, 1041 WLAN_STATUS_ASSOC_DENIED_RATES = 18, 1042 /* 802.11b */ 1043 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19, 1044 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20, 1045 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21, 1046 /* 802.11h */ 1047 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22, 1048 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23, 1049 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24, 1050 /* 802.11g */ 1051 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25, 1052 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26, 1053 /* 802.11w */ 1054 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30, 1055 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31, 1056 /* 802.11i */ 1057 WLAN_STATUS_INVALID_IE = 40, 1058 WLAN_STATUS_INVALID_GROUP_CIPHER = 41, 1059 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42, 1060 WLAN_STATUS_INVALID_AKMP = 43, 1061 WLAN_STATUS_UNSUPP_RSN_VERSION = 44, 1062 WLAN_STATUS_INVALID_RSN_IE_CAP = 45, 1063 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46, 1064 /* 802.11e */ 1065 WLAN_STATUS_UNSPECIFIED_QOS = 32, 1066 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33, 1067 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34, 1068 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35, 1069 WLAN_STATUS_REQUEST_DECLINED = 37, 1070 WLAN_STATUS_INVALID_QOS_PARAM = 38, 1071 WLAN_STATUS_CHANGE_TSPEC = 39, 1072 WLAN_STATUS_WAIT_TS_DELAY = 47, 1073 WLAN_STATUS_NO_DIRECT_LINK = 48, 1074 WLAN_STATUS_STA_NOT_PRESENT = 49, 1075 WLAN_STATUS_STA_NOT_QSTA = 50, 1076 /* 802.11s */ 1077 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76, 1078 WLAN_STATUS_FCG_NOT_SUPP = 78, 1079 WLAN_STATUS_STA_NO_TBTT = 78, 1080 }; 1081 1082 1083 /* Reason codes */ 1084 enum ieee80211_reasoncode { 1085 WLAN_REASON_UNSPECIFIED = 1, 1086 WLAN_REASON_PREV_AUTH_NOT_VALID = 2, 1087 WLAN_REASON_DEAUTH_LEAVING = 3, 1088 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4, 1089 WLAN_REASON_DISASSOC_AP_BUSY = 5, 1090 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6, 1091 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7, 1092 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8, 1093 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9, 1094 /* 802.11h */ 1095 WLAN_REASON_DISASSOC_BAD_POWER = 10, 1096 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11, 1097 /* 802.11i */ 1098 WLAN_REASON_INVALID_IE = 13, 1099 WLAN_REASON_MIC_FAILURE = 14, 1100 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, 1101 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16, 1102 WLAN_REASON_IE_DIFFERENT = 17, 1103 WLAN_REASON_INVALID_GROUP_CIPHER = 18, 1104 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19, 1105 WLAN_REASON_INVALID_AKMP = 20, 1106 WLAN_REASON_UNSUPP_RSN_VERSION = 21, 1107 WLAN_REASON_INVALID_RSN_IE_CAP = 22, 1108 WLAN_REASON_IEEE8021X_FAILED = 23, 1109 WLAN_REASON_CIPHER_SUITE_REJECTED = 24, 1110 /* 802.11e */ 1111 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32, 1112 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33, 1113 WLAN_REASON_DISASSOC_LOW_ACK = 34, 1114 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35, 1115 WLAN_REASON_QSTA_LEAVE_QBSS = 36, 1116 WLAN_REASON_QSTA_NOT_USE = 37, 1117 WLAN_REASON_QSTA_REQUIRE_SETUP = 38, 1118 WLAN_REASON_QSTA_TIMEOUT = 39, 1119 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45, 1120 /* 802.11s */ 1121 WLAN_REASON_MESH_PEER_CANCELED = 52, 1122 WLAN_REASON_MESH_MAX_PEERS = 53, 1123 WLAN_REASON_MESH_CONFIG = 54, 1124 WLAN_REASON_MESH_CLOSE = 55, 1125 WLAN_REASON_MESH_MAX_RETRIES = 56, 1126 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57, 1127 WLAN_REASON_MESH_INVALID_GTK = 58, 1128 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59, 1129 WLAN_REASON_MESH_INVALID_SECURITY = 60, 1130 WLAN_REASON_MESH_PATH_ERROR = 61, 1131 WLAN_REASON_MESH_PATH_NOFORWARD = 62, 1132 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63, 1133 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64, 1134 WLAN_REASON_MESH_CHAN_REGULATORY = 65, 1135 WLAN_REASON_MESH_CHAN = 66, 1136 }; 1137 1138 1139 /* Information Element IDs */ 1140 enum ieee80211_eid { 1141 WLAN_EID_SSID = 0, 1142 WLAN_EID_SUPP_RATES = 1, 1143 WLAN_EID_FH_PARAMS = 2, 1144 WLAN_EID_DS_PARAMS = 3, 1145 WLAN_EID_CF_PARAMS = 4, 1146 WLAN_EID_TIM = 5, 1147 WLAN_EID_IBSS_PARAMS = 6, 1148 WLAN_EID_CHALLENGE = 16, 1149 1150 WLAN_EID_COUNTRY = 7, 1151 WLAN_EID_HP_PARAMS = 8, 1152 WLAN_EID_HP_TABLE = 9, 1153 WLAN_EID_REQUEST = 10, 1154 1155 WLAN_EID_QBSS_LOAD = 11, 1156 WLAN_EID_EDCA_PARAM_SET = 12, 1157 WLAN_EID_TSPEC = 13, 1158 WLAN_EID_TCLAS = 14, 1159 WLAN_EID_SCHEDULE = 15, 1160 WLAN_EID_TS_DELAY = 43, 1161 WLAN_EID_TCLAS_PROCESSING = 44, 1162 WLAN_EID_QOS_CAPA = 46, 1163 /* 802.11s */ 1164 WLAN_EID_MESH_CONFIG = 113, 1165 WLAN_EID_MESH_ID = 114, 1166 WLAN_EID_LINK_METRIC_REPORT = 115, 1167 WLAN_EID_CONGESTION_NOTIFICATION = 116, 1168 /* Note that the Peer Link IE has been replaced with the similar 1169 * Peer Management IE. We will keep the former definition until mesh 1170 * code is changed to comply with latest 802.11s drafts. 1171 */ 1172 WLAN_EID_PEER_LINK = 55, /* no longer in 802.11s drafts */ 1173 WLAN_EID_PEER_MGMT = 117, 1174 WLAN_EID_CHAN_SWITCH_PARAM = 118, 1175 WLAN_EID_MESH_AWAKE_WINDOW = 119, 1176 WLAN_EID_BEACON_TIMING = 120, 1177 WLAN_EID_MCCAOP_SETUP_REQ = 121, 1178 WLAN_EID_MCCAOP_SETUP_RESP = 122, 1179 WLAN_EID_MCCAOP_ADVERT = 123, 1180 WLAN_EID_MCCAOP_TEARDOWN = 124, 1181 WLAN_EID_GANN = 125, 1182 WLAN_EID_RANN = 126, 1183 WLAN_EID_PREQ = 130, 1184 WLAN_EID_PREP = 131, 1185 WLAN_EID_PERR = 132, 1186 WLAN_EID_PXU = 137, 1187 WLAN_EID_PXUC = 138, 1188 WLAN_EID_AUTH_MESH_PEER_EXCH = 139, 1189 WLAN_EID_MIC = 140, 1190 1191 WLAN_EID_PWR_CONSTRAINT = 32, 1192 WLAN_EID_PWR_CAPABILITY = 33, 1193 WLAN_EID_TPC_REQUEST = 34, 1194 WLAN_EID_TPC_REPORT = 35, 1195 WLAN_EID_SUPPORTED_CHANNELS = 36, 1196 WLAN_EID_CHANNEL_SWITCH = 37, 1197 WLAN_EID_MEASURE_REQUEST = 38, 1198 WLAN_EID_MEASURE_REPORT = 39, 1199 WLAN_EID_QUIET = 40, 1200 WLAN_EID_IBSS_DFS = 41, 1201 1202 WLAN_EID_ERP_INFO = 42, 1203 WLAN_EID_EXT_SUPP_RATES = 50, 1204 1205 WLAN_EID_HT_CAPABILITY = 45, 1206 WLAN_EID_HT_INFORMATION = 61, 1207 1208 WLAN_EID_RSN = 48, 1209 WLAN_EID_MMIE = 76, 1210 WLAN_EID_WPA = 221, 1211 WLAN_EID_GENERIC = 221, 1212 WLAN_EID_VENDOR_SPECIFIC = 221, 1213 WLAN_EID_QOS_PARAMETER = 222, 1214 1215 WLAN_EID_AP_CHAN_REPORT = 51, 1216 WLAN_EID_NEIGHBOR_REPORT = 52, 1217 WLAN_EID_RCPI = 53, 1218 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63, 1219 WLAN_EID_ANTENNA_INFO = 64, 1220 WLAN_EID_RSNI = 65, 1221 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66, 1222 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67, 1223 WLAN_EID_BSS_AC_ACCESS_DELAY = 68, 1224 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70, 1225 WLAN_EID_MULTIPLE_BSSID = 71, 1226 1227 WLAN_EID_MOBILITY_DOMAIN = 54, 1228 WLAN_EID_FAST_BSS_TRANSITION = 55, 1229 WLAN_EID_TIMEOUT_INTERVAL = 56, 1230 WLAN_EID_RIC_DATA = 57, 1231 WLAN_EID_RIC_DESCRIPTOR = 75, 1232 1233 WLAN_EID_DSE_REGISTERED_LOCATION = 58, 1234 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59, 1235 WLAN_EID_EXT_CHANSWITCH_ANN = 60, 1236 }; 1237 1238 /* Action category code */ 1239 enum ieee80211_category { 1240 WLAN_CATEGORY_SPECTRUM_MGMT = 0, 1241 WLAN_CATEGORY_QOS = 1, 1242 WLAN_CATEGORY_DLS = 2, 1243 WLAN_CATEGORY_BACK = 3, 1244 WLAN_CATEGORY_PUBLIC = 4, 1245 WLAN_CATEGORY_HT = 7, 1246 WLAN_CATEGORY_SA_QUERY = 8, 1247 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9, 1248 WLAN_CATEGORY_MESH_ACTION = 13, 1249 WLAN_CATEGORY_MULTIHOP_ACTION = 14, 1250 WLAN_CATEGORY_SELF_PROTECTED = 15, 1251 WLAN_CATEGORY_WMM = 17, 1252 /* TODO: remove MESH_PLINK and MESH_PATH_SEL after */ 1253 /* mesh is updated to current 802.11s draft */ 1254 WLAN_CATEGORY_MESH_PLINK = 30, 1255 WLAN_CATEGORY_MESH_PATH_SEL = 32, 1256 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, 1257 WLAN_CATEGORY_VENDOR_SPECIFIC = 127, 1258 }; 1259 1260 /* SPECTRUM_MGMT action code */ 1261 enum ieee80211_spectrum_mgmt_actioncode { 1262 WLAN_ACTION_SPCT_MSR_REQ = 0, 1263 WLAN_ACTION_SPCT_MSR_RPRT = 1, 1264 WLAN_ACTION_SPCT_TPC_REQ = 2, 1265 WLAN_ACTION_SPCT_TPC_RPRT = 3, 1266 WLAN_ACTION_SPCT_CHL_SWITCH = 4, 1267 }; 1268 1269 /* HT action codes */ 1270 enum ieee80211_ht_actioncode { 1271 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0, 1272 WLAN_HT_ACTION_SMPS = 1, 1273 WLAN_HT_ACTION_PSMP = 2, 1274 WLAN_HT_ACTION_PCO_PHASE = 3, 1275 WLAN_HT_ACTION_CSI = 4, 1276 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5, 1277 WLAN_HT_ACTION_COMPRESSED_BF = 6, 1278 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, 1279 }; 1280 1281 /* Security key length */ 1282 enum ieee80211_key_len { 1283 WLAN_KEY_LEN_WEP40 = 5, 1284 WLAN_KEY_LEN_WEP104 = 13, 1285 WLAN_KEY_LEN_CCMP = 16, 1286 WLAN_KEY_LEN_TKIP = 32, 1287 WLAN_KEY_LEN_AES_CMAC = 16, 1288 }; 1289 1290 /* 1291 * IEEE 802.11-2007 7.3.2.9 Country information element 1292 * 1293 * Minimum length is 8 octets, ie len must be evenly 1294 * divisible by 2 1295 */ 1296 1297 /* Although the spec says 8 I'm seeing 6 in practice */ 1298 #define IEEE80211_COUNTRY_IE_MIN_LEN 6 1299 1300 /* 1301 * For regulatory extension stuff see IEEE 802.11-2007 1302 * Annex I (page 1141) and Annex J (page 1147). Also 1303 * review 7.3.2.9. 1304 * 1305 * When dot11RegulatoryClassesRequired is true and the 1306 * first_channel/reg_extension_id is >= 201 then the IE 1307 * compromises of the 'ext' struct represented below: 1308 * 1309 * - Regulatory extension ID - when generating IE this just needs 1310 * to be monotonically increasing for each triplet passed in 1311 * the IE 1312 * - Regulatory class - index into set of rules 1313 * - Coverage class - index into air propagation time (Table 7-27), 1314 * in microseconds, you can compute the air propagation time from 1315 * the index by multiplying by 3, so index 10 yields a propagation 1316 * of 10 us. Valid values are 0-31, values 32-255 are not defined 1317 * yet. A value of 0 inicates air propagation of <= 1 us. 1318 * 1319 * See also Table I.2 for Emission limit sets and table 1320 * I.3 for Behavior limit sets. Table J.1 indicates how to map 1321 * a reg_class to an emission limit set and behavior limit set. 1322 */ 1323 #define IEEE80211_COUNTRY_EXTENSION_ID 201 1324 1325 /* 1326 * Channels numbers in the IE must be monotonically increasing 1327 * if dot11RegulatoryClassesRequired is not true. 1328 * 1329 * If dot11RegulatoryClassesRequired is true consecutive 1330 * subband triplets following a regulatory triplet shall 1331 * have monotonically increasing first_channel number fields. 1332 * 1333 * Channel numbers shall not overlap. 1334 * 1335 * Note that max_power is signed. 1336 */ 1337 struct ieee80211_country_ie_triplet { 1338 union { 1339 struct { 1340 u8 first_channel; 1341 u8 num_channels; 1342 s8 max_power; 1343 } __attribute__ ((packed)) chans; 1344 struct { 1345 u8 reg_extension_id; 1346 u8 reg_class; 1347 u8 coverage_class; 1348 } __attribute__ ((packed)) ext; 1349 }; 1350 } __attribute__ ((packed)); 1351 1352 enum ieee80211_timeout_interval_type { 1353 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */, 1354 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */, 1355 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */, 1356 }; 1357 1358 /* BACK action code */ 1359 enum ieee80211_back_actioncode { 1360 WLAN_ACTION_ADDBA_REQ = 0, 1361 WLAN_ACTION_ADDBA_RESP = 1, 1362 WLAN_ACTION_DELBA = 2, 1363 }; 1364 1365 /* BACK (block-ack) parties */ 1366 enum ieee80211_back_parties { 1367 WLAN_BACK_RECIPIENT = 0, 1368 WLAN_BACK_INITIATOR = 1, 1369 }; 1370 1371 /* SA Query action */ 1372 enum ieee80211_sa_query_action { 1373 WLAN_ACTION_SA_QUERY_REQUEST = 0, 1374 WLAN_ACTION_SA_QUERY_RESPONSE = 1, 1375 }; 1376 1377 1378 /* A-MSDU 802.11n */ 1379 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080 1380 1381 /* cipher suite selectors */ 1382 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 1383 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 1384 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 1385 /* reserved: 0x000FAC03 */ 1386 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 1387 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 1388 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 1389 1390 /* AKM suite selectors */ 1391 #define WLAN_AKM_SUITE_8021X 0x000FAC01 1392 #define WLAN_AKM_SUITE_PSK 0x000FAC02 1393 #define WLAN_AKM_SUITE_SAE 0x000FAC08 1394 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09 1395 1396 #define WLAN_MAX_KEY_LEN 32 1397 1398 #define WLAN_PMKID_LEN 16 1399 1400 /** 1401 * ieee80211_get_qos_ctl - get pointer to qos control bytes 1402 * @hdr: the frame 1403 * 1404 * The qos ctrl bytes come after the frame_control, duration, seq_num 1405 * and 3 or 4 addresses of length ETH_ALEN. 1406 * 3 addr: 2 + 2 + 2 + 3*6 = 24 1407 * 4 addr: 2 + 2 + 2 + 4*6 = 30 1408 */ 1409 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr) 1410 { 1411 if (ieee80211_has_a4(hdr->frame_control)) 1412 return (u8 *)hdr + 30; 1413 else 1414 return (u8 *)hdr + 24; 1415 } 1416 1417 /** 1418 * ieee80211_get_SA - get pointer to SA 1419 * @hdr: the frame 1420 * 1421 * Given an 802.11 frame, this function returns the offset 1422 * to the source address (SA). It does not verify that the 1423 * header is long enough to contain the address, and the 1424 * header must be long enough to contain the frame control 1425 * field. 1426 */ 1427 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr) 1428 { 1429 if (ieee80211_has_a4(hdr->frame_control)) 1430 return hdr->addr4; 1431 if (ieee80211_has_fromds(hdr->frame_control)) 1432 return hdr->addr3; 1433 return hdr->addr2; 1434 } 1435 1436 /** 1437 * ieee80211_get_DA - get pointer to DA 1438 * @hdr: the frame 1439 * 1440 * Given an 802.11 frame, this function returns the offset 1441 * to the destination address (DA). It does not verify that 1442 * the header is long enough to contain the address, and the 1443 * header must be long enough to contain the frame control 1444 * field. 1445 */ 1446 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) 1447 { 1448 if (ieee80211_has_tods(hdr->frame_control)) 1449 return hdr->addr3; 1450 else 1451 return hdr->addr1; 1452 } 1453 1454 /** 1455 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame 1456 * @hdr: the frame (buffer must include at least the first octet of payload) 1457 */ 1458 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) 1459 { 1460 if (ieee80211_is_disassoc(hdr->frame_control) || 1461 ieee80211_is_deauth(hdr->frame_control)) 1462 return true; 1463 1464 if (ieee80211_is_action(hdr->frame_control)) { 1465 u8 *category; 1466 1467 /* 1468 * Action frames, excluding Public Action frames, are Robust 1469 * Management Frames. However, if we are looking at a Protected 1470 * frame, skip the check since the data may be encrypted and 1471 * the frame has already been found to be a Robust Management 1472 * Frame (by the other end). 1473 */ 1474 if (ieee80211_has_protected(hdr->frame_control)) 1475 return true; 1476 category = ((u8 *) hdr) + 24; 1477 return *category != WLAN_CATEGORY_PUBLIC && 1478 *category != WLAN_CATEGORY_HT && 1479 *category != WLAN_CATEGORY_VENDOR_SPECIFIC; 1480 } 1481 1482 return false; 1483 } 1484 1485 /** 1486 * ieee80211_fhss_chan_to_freq - get channel frequency 1487 * @channel: the FHSS channel 1488 * 1489 * Convert IEEE802.11 FHSS channel to frequency (MHz) 1490 * Ref IEEE 802.11-2007 section 14.6 1491 */ 1492 static inline int ieee80211_fhss_chan_to_freq(int channel) 1493 { 1494 if ((channel > 1) && (channel < 96)) 1495 return channel + 2400; 1496 else 1497 return -1; 1498 } 1499 1500 /** 1501 * ieee80211_freq_to_fhss_chan - get channel 1502 * @freq: the channels frequency 1503 * 1504 * Convert frequency (MHz) to IEEE802.11 FHSS channel 1505 * Ref IEEE 802.11-2007 section 14.6 1506 */ 1507 static inline int ieee80211_freq_to_fhss_chan(int freq) 1508 { 1509 if ((freq > 2401) && (freq < 2496)) 1510 return freq - 2400; 1511 else 1512 return -1; 1513 } 1514 1515 /** 1516 * ieee80211_dsss_chan_to_freq - get channel center frequency 1517 * @channel: the DSSS channel 1518 * 1519 * Convert IEEE802.11 DSSS channel to the center frequency (MHz). 1520 * Ref IEEE 802.11-2007 section 15.6 1521 */ 1522 static inline int ieee80211_dsss_chan_to_freq(int channel) 1523 { 1524 if ((channel > 0) && (channel < 14)) 1525 return 2407 + (channel * 5); 1526 else if (channel == 14) 1527 return 2484; 1528 else 1529 return -1; 1530 } 1531 1532 /** 1533 * ieee80211_freq_to_dsss_chan - get channel 1534 * @freq: the frequency 1535 * 1536 * Convert frequency (MHz) to IEEE802.11 DSSS channel 1537 * Ref IEEE 802.11-2007 section 15.6 1538 * 1539 * This routine selects the channel with the closest center frequency. 1540 */ 1541 static inline int ieee80211_freq_to_dsss_chan(int freq) 1542 { 1543 if ((freq >= 2410) && (freq < 2475)) 1544 return (freq - 2405) / 5; 1545 else if ((freq >= 2482) && (freq < 2487)) 1546 return 14; 1547 else 1548 return -1; 1549 } 1550 1551 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back 1552 * Ref IEEE 802.11-2007 section 18.4.6.2 1553 * 1554 * The channels and frequencies are the same as those defined for DSSS 1555 */ 1556 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan) 1557 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq) 1558 1559 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back 1560 * Ref IEEE 802.11-2007 section 19.4.2 1561 */ 1562 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan) 1563 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq) 1564 1565 /** 1566 * ieee80211_ofdm_chan_to_freq - get channel center frequency 1567 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1568 * @channel: the OFDM channel 1569 * 1570 * Convert IEEE802.11 OFDM channel to center frequency (MHz) 1571 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1572 */ 1573 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel) 1574 { 1575 if ((channel > 0) && (channel <= 200) && 1576 (s_freq >= 4000)) 1577 return s_freq + (channel * 5); 1578 else 1579 return -1; 1580 } 1581 1582 /** 1583 * ieee80211_freq_to_ofdm_channel - get channel 1584 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1585 * @freq: the frequency 1586 * 1587 * Convert frequency (MHz) to IEEE802.11 OFDM channel 1588 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1589 * 1590 * This routine selects the channel with the closest center frequency. 1591 */ 1592 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq) 1593 { 1594 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) && 1595 (s_freq >= 4000)) 1596 return (freq + 2 - s_freq) / 5; 1597 else 1598 return -1; 1599 } 1600 1601 /** 1602 * ieee80211_tu_to_usec - convert time units (TU) to microseconds 1603 * @tu: the TUs 1604 */ 1605 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu) 1606 { 1607 return 1024 * tu; 1608 } 1609 1610 /** 1611 * ieee80211_check_tim - check if AID bit is set in TIM 1612 * @tim: the TIM IE 1613 * @tim_len: length of the TIM IE 1614 * @aid: the AID to look for 1615 */ 1616 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim, 1617 u8 tim_len, u16 aid) 1618 { 1619 u8 mask; 1620 u8 index, indexn1, indexn2; 1621 1622 if (unlikely(!tim || tim_len < sizeof(*tim))) 1623 return false; 1624 1625 aid &= 0x3fff; 1626 index = aid / 8; 1627 mask = 1 << (aid & 7); 1628 1629 indexn1 = tim->bitmap_ctrl & 0xfe; 1630 indexn2 = tim_len + indexn1 - 4; 1631 1632 if (index < indexn1 || index > indexn2) 1633 return false; 1634 1635 index -= indexn1; 1636 1637 return !!(tim->virtual_map[index] & mask); 1638 } 1639 1640 #endif /* LINUX_IEEE80211_H */ 1641