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 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f 126 127 /* U-APSD queues for WMM IEs sent by STA */ 128 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0) 129 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI (1<<1) 130 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK (1<<2) 131 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE (1<<3) 132 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK 0x0f 133 134 /* U-APSD max SP length for WMM IEs sent by STA */ 135 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0x00 136 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2 0x01 137 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4 0x02 138 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6 0x03 139 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK 0x03 140 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT 5 141 142 #define IEEE80211_HT_CTL_LEN 4 143 144 struct ieee80211_hdr { 145 __le16 frame_control; 146 __le16 duration_id; 147 u8 addr1[6]; 148 u8 addr2[6]; 149 u8 addr3[6]; 150 __le16 seq_ctrl; 151 u8 addr4[6]; 152 } __attribute__ ((packed)); 153 154 struct ieee80211_hdr_3addr { 155 __le16 frame_control; 156 __le16 duration_id; 157 u8 addr1[6]; 158 u8 addr2[6]; 159 u8 addr3[6]; 160 __le16 seq_ctrl; 161 } __attribute__ ((packed)); 162 163 struct ieee80211_qos_hdr { 164 __le16 frame_control; 165 __le16 duration_id; 166 u8 addr1[6]; 167 u8 addr2[6]; 168 u8 addr3[6]; 169 __le16 seq_ctrl; 170 __le16 qos_ctrl; 171 } __attribute__ ((packed)); 172 173 /** 174 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set 175 * @fc: frame control bytes in little-endian byteorder 176 */ 177 static inline int ieee80211_has_tods(__le16 fc) 178 { 179 return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0; 180 } 181 182 /** 183 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set 184 * @fc: frame control bytes in little-endian byteorder 185 */ 186 static inline int ieee80211_has_fromds(__le16 fc) 187 { 188 return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0; 189 } 190 191 /** 192 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set 193 * @fc: frame control bytes in little-endian byteorder 194 */ 195 static inline int ieee80211_has_a4(__le16 fc) 196 { 197 __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); 198 return (fc & tmp) == tmp; 199 } 200 201 /** 202 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set 203 * @fc: frame control bytes in little-endian byteorder 204 */ 205 static inline int ieee80211_has_morefrags(__le16 fc) 206 { 207 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0; 208 } 209 210 /** 211 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set 212 * @fc: frame control bytes in little-endian byteorder 213 */ 214 static inline int ieee80211_has_retry(__le16 fc) 215 { 216 return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0; 217 } 218 219 /** 220 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set 221 * @fc: frame control bytes in little-endian byteorder 222 */ 223 static inline int ieee80211_has_pm(__le16 fc) 224 { 225 return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0; 226 } 227 228 /** 229 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set 230 * @fc: frame control bytes in little-endian byteorder 231 */ 232 static inline int ieee80211_has_moredata(__le16 fc) 233 { 234 return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0; 235 } 236 237 /** 238 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set 239 * @fc: frame control bytes in little-endian byteorder 240 */ 241 static inline int ieee80211_has_protected(__le16 fc) 242 { 243 return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0; 244 } 245 246 /** 247 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set 248 * @fc: frame control bytes in little-endian byteorder 249 */ 250 static inline int ieee80211_has_order(__le16 fc) 251 { 252 return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0; 253 } 254 255 /** 256 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT 257 * @fc: frame control bytes in little-endian byteorder 258 */ 259 static inline int ieee80211_is_mgmt(__le16 fc) 260 { 261 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 262 cpu_to_le16(IEEE80211_FTYPE_MGMT); 263 } 264 265 /** 266 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL 267 * @fc: frame control bytes in little-endian byteorder 268 */ 269 static inline int ieee80211_is_ctl(__le16 fc) 270 { 271 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 272 cpu_to_le16(IEEE80211_FTYPE_CTL); 273 } 274 275 /** 276 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA 277 * @fc: frame control bytes in little-endian byteorder 278 */ 279 static inline int ieee80211_is_data(__le16 fc) 280 { 281 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) == 282 cpu_to_le16(IEEE80211_FTYPE_DATA); 283 } 284 285 /** 286 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set 287 * @fc: frame control bytes in little-endian byteorder 288 */ 289 static inline int ieee80211_is_data_qos(__le16 fc) 290 { 291 /* 292 * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need 293 * to check the one bit 294 */ 295 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) == 296 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA); 297 } 298 299 /** 300 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data 301 * @fc: frame control bytes in little-endian byteorder 302 */ 303 static inline int ieee80211_is_data_present(__le16 fc) 304 { 305 /* 306 * mask with 0x40 and test that that bit is clear to only return true 307 * for the data-containing substypes. 308 */ 309 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) == 310 cpu_to_le16(IEEE80211_FTYPE_DATA); 311 } 312 313 /** 314 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ 315 * @fc: frame control bytes in little-endian byteorder 316 */ 317 static inline int ieee80211_is_assoc_req(__le16 fc) 318 { 319 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 320 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ); 321 } 322 323 /** 324 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP 325 * @fc: frame control bytes in little-endian byteorder 326 */ 327 static inline int ieee80211_is_assoc_resp(__le16 fc) 328 { 329 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 330 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP); 331 } 332 333 /** 334 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ 335 * @fc: frame control bytes in little-endian byteorder 336 */ 337 static inline int ieee80211_is_reassoc_req(__le16 fc) 338 { 339 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 340 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ); 341 } 342 343 /** 344 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP 345 * @fc: frame control bytes in little-endian byteorder 346 */ 347 static inline int ieee80211_is_reassoc_resp(__le16 fc) 348 { 349 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 350 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP); 351 } 352 353 /** 354 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ 355 * @fc: frame control bytes in little-endian byteorder 356 */ 357 static inline int ieee80211_is_probe_req(__le16 fc) 358 { 359 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 360 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ); 361 } 362 363 /** 364 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP 365 * @fc: frame control bytes in little-endian byteorder 366 */ 367 static inline int ieee80211_is_probe_resp(__le16 fc) 368 { 369 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 370 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); 371 } 372 373 /** 374 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON 375 * @fc: frame control bytes in little-endian byteorder 376 */ 377 static inline int ieee80211_is_beacon(__le16 fc) 378 { 379 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 380 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON); 381 } 382 383 /** 384 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM 385 * @fc: frame control bytes in little-endian byteorder 386 */ 387 static inline int ieee80211_is_atim(__le16 fc) 388 { 389 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 390 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM); 391 } 392 393 /** 394 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC 395 * @fc: frame control bytes in little-endian byteorder 396 */ 397 static inline int ieee80211_is_disassoc(__le16 fc) 398 { 399 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 400 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC); 401 } 402 403 /** 404 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH 405 * @fc: frame control bytes in little-endian byteorder 406 */ 407 static inline int ieee80211_is_auth(__le16 fc) 408 { 409 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 410 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); 411 } 412 413 /** 414 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH 415 * @fc: frame control bytes in little-endian byteorder 416 */ 417 static inline int ieee80211_is_deauth(__le16 fc) 418 { 419 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 420 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH); 421 } 422 423 /** 424 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION 425 * @fc: frame control bytes in little-endian byteorder 426 */ 427 static inline int ieee80211_is_action(__le16 fc) 428 { 429 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 430 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); 431 } 432 433 /** 434 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ 435 * @fc: frame control bytes in little-endian byteorder 436 */ 437 static inline int ieee80211_is_back_req(__le16 fc) 438 { 439 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 440 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ); 441 } 442 443 /** 444 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK 445 * @fc: frame control bytes in little-endian byteorder 446 */ 447 static inline int ieee80211_is_back(__le16 fc) 448 { 449 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 450 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK); 451 } 452 453 /** 454 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL 455 * @fc: frame control bytes in little-endian byteorder 456 */ 457 static inline int ieee80211_is_pspoll(__le16 fc) 458 { 459 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 460 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); 461 } 462 463 /** 464 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS 465 * @fc: frame control bytes in little-endian byteorder 466 */ 467 static inline int ieee80211_is_rts(__le16 fc) 468 { 469 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 470 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); 471 } 472 473 /** 474 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS 475 * @fc: frame control bytes in little-endian byteorder 476 */ 477 static inline int ieee80211_is_cts(__le16 fc) 478 { 479 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 480 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); 481 } 482 483 /** 484 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK 485 * @fc: frame control bytes in little-endian byteorder 486 */ 487 static inline int ieee80211_is_ack(__le16 fc) 488 { 489 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 490 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK); 491 } 492 493 /** 494 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND 495 * @fc: frame control bytes in little-endian byteorder 496 */ 497 static inline int ieee80211_is_cfend(__le16 fc) 498 { 499 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 500 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND); 501 } 502 503 /** 504 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK 505 * @fc: frame control bytes in little-endian byteorder 506 */ 507 static inline int ieee80211_is_cfendack(__le16 fc) 508 { 509 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 510 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK); 511 } 512 513 /** 514 * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame 515 * @fc: frame control bytes in little-endian byteorder 516 */ 517 static inline int ieee80211_is_nullfunc(__le16 fc) 518 { 519 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 520 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC); 521 } 522 523 /** 524 * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame 525 * @fc: frame control bytes in little-endian byteorder 526 */ 527 static inline int ieee80211_is_qos_nullfunc(__le16 fc) 528 { 529 return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) == 530 cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC); 531 } 532 533 struct ieee80211s_hdr { 534 u8 flags; 535 u8 ttl; 536 __le32 seqnum; 537 u8 eaddr1[6]; 538 u8 eaddr2[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 extended capabilities masks (for extended_ht_cap_info) */ 888 #define IEEE80211_HT_EXT_CAP_PCO 0x0001 889 #define IEEE80211_HT_EXT_CAP_PCO_TIME 0x0006 890 #define IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT 1 891 #define IEEE80211_HT_EXT_CAP_MCS_FB 0x0300 892 #define IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT 8 893 #define IEEE80211_HT_EXT_CAP_HTC_SUP 0x0400 894 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER 0x0800 895 896 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */ 897 #define IEEE80211_HT_AMPDU_PARM_FACTOR 0x03 898 #define IEEE80211_HT_AMPDU_PARM_DENSITY 0x1C 899 #define IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT 2 900 901 /* 902 * Maximum length of AMPDU that the STA can receive. 903 * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets) 904 */ 905 enum ieee80211_max_ampdu_length_exp { 906 IEEE80211_HT_MAX_AMPDU_8K = 0, 907 IEEE80211_HT_MAX_AMPDU_16K = 1, 908 IEEE80211_HT_MAX_AMPDU_32K = 2, 909 IEEE80211_HT_MAX_AMPDU_64K = 3 910 }; 911 912 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13 913 914 /* Minimum MPDU start spacing */ 915 enum ieee80211_min_mpdu_spacing { 916 IEEE80211_HT_MPDU_DENSITY_NONE = 0, /* No restriction */ 917 IEEE80211_HT_MPDU_DENSITY_0_25 = 1, /* 1/4 usec */ 918 IEEE80211_HT_MPDU_DENSITY_0_5 = 2, /* 1/2 usec */ 919 IEEE80211_HT_MPDU_DENSITY_1 = 3, /* 1 usec */ 920 IEEE80211_HT_MPDU_DENSITY_2 = 4, /* 2 usec */ 921 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4 usec */ 922 IEEE80211_HT_MPDU_DENSITY_8 = 6, /* 8 usec */ 923 IEEE80211_HT_MPDU_DENSITY_16 = 7 /* 16 usec */ 924 }; 925 926 /** 927 * struct ieee80211_ht_info - HT information 928 * 929 * This structure is the "HT information element" as 930 * described in 802.11n D5.0 7.3.2.58 931 */ 932 struct ieee80211_ht_info { 933 u8 control_chan; 934 u8 ht_param; 935 __le16 operation_mode; 936 __le16 stbc_param; 937 u8 basic_set[16]; 938 } __attribute__ ((packed)); 939 940 /* for ht_param */ 941 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03 942 #define IEEE80211_HT_PARAM_CHA_SEC_NONE 0x00 943 #define IEEE80211_HT_PARAM_CHA_SEC_ABOVE 0x01 944 #define IEEE80211_HT_PARAM_CHA_SEC_BELOW 0x03 945 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY 0x04 946 #define IEEE80211_HT_PARAM_RIFS_MODE 0x08 947 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT 0x10 948 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN 0xE0 949 950 /* for operation_mode */ 951 #define IEEE80211_HT_OP_MODE_PROTECTION 0x0003 952 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0 953 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 1 954 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 2 955 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 3 956 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT 0x0004 957 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT 0x0010 958 959 /* for stbc_param */ 960 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON 0x0040 961 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 962 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON 0x0100 963 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT 0x0200 964 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE 0x0400 965 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE 0x0800 966 967 968 /* block-ack parameters */ 969 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 970 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C 971 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0 972 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 973 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 974 975 /* 976 * A-PMDU buffer sizes 977 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) 978 */ 979 #define IEEE80211_MIN_AMPDU_BUF 0x8 980 #define IEEE80211_MAX_AMPDU_BUF 0x40 981 982 983 /* Spatial Multiplexing Power Save Modes (for capability) */ 984 #define WLAN_HT_CAP_SM_PS_STATIC 0 985 #define WLAN_HT_CAP_SM_PS_DYNAMIC 1 986 #define WLAN_HT_CAP_SM_PS_INVALID 2 987 #define WLAN_HT_CAP_SM_PS_DISABLED 3 988 989 /* for SM power control field lower two bits */ 990 #define WLAN_HT_SMPS_CONTROL_DISABLED 0 991 #define WLAN_HT_SMPS_CONTROL_STATIC 1 992 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3 993 994 /* Authentication algorithms */ 995 #define WLAN_AUTH_OPEN 0 996 #define WLAN_AUTH_SHARED_KEY 1 997 #define WLAN_AUTH_FT 2 998 #define WLAN_AUTH_SAE 3 999 #define WLAN_AUTH_LEAP 128 1000 1001 #define WLAN_AUTH_CHALLENGE_LEN 128 1002 1003 #define WLAN_CAPABILITY_ESS (1<<0) 1004 #define WLAN_CAPABILITY_IBSS (1<<1) 1005 1006 /* 1007 * A mesh STA sets the ESS and IBSS capability bits to zero. 1008 * however, this holds true for p2p probe responses (in the p2p_find 1009 * phase) as well. 1010 */ 1011 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \ 1012 (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS))) 1013 1014 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2) 1015 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) 1016 #define WLAN_CAPABILITY_PRIVACY (1<<4) 1017 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) 1018 #define WLAN_CAPABILITY_PBCC (1<<6) 1019 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) 1020 1021 /* 802.11h */ 1022 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) 1023 #define WLAN_CAPABILITY_QOS (1<<9) 1024 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) 1025 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) 1026 /* measurement */ 1027 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE (1<<0) 1028 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE (1<<1) 1029 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED (1<<2) 1030 1031 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC 0 1032 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA 1 1033 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI 2 1034 1035 1036 /* 802.11g ERP information element */ 1037 #define WLAN_ERP_NON_ERP_PRESENT (1<<0) 1038 #define WLAN_ERP_USE_PROTECTION (1<<1) 1039 #define WLAN_ERP_BARKER_PREAMBLE (1<<2) 1040 1041 /* WLAN_ERP_BARKER_PREAMBLE values */ 1042 enum { 1043 WLAN_ERP_PREAMBLE_SHORT = 0, 1044 WLAN_ERP_PREAMBLE_LONG = 1, 1045 }; 1046 1047 /* Status codes */ 1048 enum ieee80211_statuscode { 1049 WLAN_STATUS_SUCCESS = 0, 1050 WLAN_STATUS_UNSPECIFIED_FAILURE = 1, 1051 WLAN_STATUS_CAPS_UNSUPPORTED = 10, 1052 WLAN_STATUS_REASSOC_NO_ASSOC = 11, 1053 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12, 1054 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13, 1055 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14, 1056 WLAN_STATUS_CHALLENGE_FAIL = 15, 1057 WLAN_STATUS_AUTH_TIMEOUT = 16, 1058 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17, 1059 WLAN_STATUS_ASSOC_DENIED_RATES = 18, 1060 /* 802.11b */ 1061 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19, 1062 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20, 1063 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21, 1064 /* 802.11h */ 1065 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22, 1066 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23, 1067 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24, 1068 /* 802.11g */ 1069 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25, 1070 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26, 1071 /* 802.11w */ 1072 WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30, 1073 WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31, 1074 /* 802.11i */ 1075 WLAN_STATUS_INVALID_IE = 40, 1076 WLAN_STATUS_INVALID_GROUP_CIPHER = 41, 1077 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42, 1078 WLAN_STATUS_INVALID_AKMP = 43, 1079 WLAN_STATUS_UNSUPP_RSN_VERSION = 44, 1080 WLAN_STATUS_INVALID_RSN_IE_CAP = 45, 1081 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46, 1082 /* 802.11e */ 1083 WLAN_STATUS_UNSPECIFIED_QOS = 32, 1084 WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33, 1085 WLAN_STATUS_ASSOC_DENIED_LOWACK = 34, 1086 WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35, 1087 WLAN_STATUS_REQUEST_DECLINED = 37, 1088 WLAN_STATUS_INVALID_QOS_PARAM = 38, 1089 WLAN_STATUS_CHANGE_TSPEC = 39, 1090 WLAN_STATUS_WAIT_TS_DELAY = 47, 1091 WLAN_STATUS_NO_DIRECT_LINK = 48, 1092 WLAN_STATUS_STA_NOT_PRESENT = 49, 1093 WLAN_STATUS_STA_NOT_QSTA = 50, 1094 /* 802.11s */ 1095 WLAN_STATUS_ANTI_CLOG_REQUIRED = 76, 1096 WLAN_STATUS_FCG_NOT_SUPP = 78, 1097 WLAN_STATUS_STA_NO_TBTT = 78, 1098 }; 1099 1100 1101 /* Reason codes */ 1102 enum ieee80211_reasoncode { 1103 WLAN_REASON_UNSPECIFIED = 1, 1104 WLAN_REASON_PREV_AUTH_NOT_VALID = 2, 1105 WLAN_REASON_DEAUTH_LEAVING = 3, 1106 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4, 1107 WLAN_REASON_DISASSOC_AP_BUSY = 5, 1108 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6, 1109 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7, 1110 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8, 1111 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9, 1112 /* 802.11h */ 1113 WLAN_REASON_DISASSOC_BAD_POWER = 10, 1114 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11, 1115 /* 802.11i */ 1116 WLAN_REASON_INVALID_IE = 13, 1117 WLAN_REASON_MIC_FAILURE = 14, 1118 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, 1119 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16, 1120 WLAN_REASON_IE_DIFFERENT = 17, 1121 WLAN_REASON_INVALID_GROUP_CIPHER = 18, 1122 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19, 1123 WLAN_REASON_INVALID_AKMP = 20, 1124 WLAN_REASON_UNSUPP_RSN_VERSION = 21, 1125 WLAN_REASON_INVALID_RSN_IE_CAP = 22, 1126 WLAN_REASON_IEEE8021X_FAILED = 23, 1127 WLAN_REASON_CIPHER_SUITE_REJECTED = 24, 1128 /* 802.11e */ 1129 WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32, 1130 WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33, 1131 WLAN_REASON_DISASSOC_LOW_ACK = 34, 1132 WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35, 1133 WLAN_REASON_QSTA_LEAVE_QBSS = 36, 1134 WLAN_REASON_QSTA_NOT_USE = 37, 1135 WLAN_REASON_QSTA_REQUIRE_SETUP = 38, 1136 WLAN_REASON_QSTA_TIMEOUT = 39, 1137 WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45, 1138 /* 802.11s */ 1139 WLAN_REASON_MESH_PEER_CANCELED = 52, 1140 WLAN_REASON_MESH_MAX_PEERS = 53, 1141 WLAN_REASON_MESH_CONFIG = 54, 1142 WLAN_REASON_MESH_CLOSE = 55, 1143 WLAN_REASON_MESH_MAX_RETRIES = 56, 1144 WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57, 1145 WLAN_REASON_MESH_INVALID_GTK = 58, 1146 WLAN_REASON_MESH_INCONSISTENT_PARAM = 59, 1147 WLAN_REASON_MESH_INVALID_SECURITY = 60, 1148 WLAN_REASON_MESH_PATH_ERROR = 61, 1149 WLAN_REASON_MESH_PATH_NOFORWARD = 62, 1150 WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63, 1151 WLAN_REASON_MAC_EXISTS_IN_MBSS = 64, 1152 WLAN_REASON_MESH_CHAN_REGULATORY = 65, 1153 WLAN_REASON_MESH_CHAN = 66, 1154 }; 1155 1156 1157 /* Information Element IDs */ 1158 enum ieee80211_eid { 1159 WLAN_EID_SSID = 0, 1160 WLAN_EID_SUPP_RATES = 1, 1161 WLAN_EID_FH_PARAMS = 2, 1162 WLAN_EID_DS_PARAMS = 3, 1163 WLAN_EID_CF_PARAMS = 4, 1164 WLAN_EID_TIM = 5, 1165 WLAN_EID_IBSS_PARAMS = 6, 1166 WLAN_EID_CHALLENGE = 16, 1167 1168 WLAN_EID_COUNTRY = 7, 1169 WLAN_EID_HP_PARAMS = 8, 1170 WLAN_EID_HP_TABLE = 9, 1171 WLAN_EID_REQUEST = 10, 1172 1173 WLAN_EID_QBSS_LOAD = 11, 1174 WLAN_EID_EDCA_PARAM_SET = 12, 1175 WLAN_EID_TSPEC = 13, 1176 WLAN_EID_TCLAS = 14, 1177 WLAN_EID_SCHEDULE = 15, 1178 WLAN_EID_TS_DELAY = 43, 1179 WLAN_EID_TCLAS_PROCESSING = 44, 1180 WLAN_EID_QOS_CAPA = 46, 1181 /* 802.11s */ 1182 WLAN_EID_MESH_CONFIG = 113, 1183 WLAN_EID_MESH_ID = 114, 1184 WLAN_EID_LINK_METRIC_REPORT = 115, 1185 WLAN_EID_CONGESTION_NOTIFICATION = 116, 1186 /* Note that the Peer Link IE has been replaced with the similar 1187 * Peer Management IE. We will keep the former definition until mesh 1188 * code is changed to comply with latest 802.11s drafts. 1189 */ 1190 WLAN_EID_PEER_LINK = 55, /* no longer in 802.11s drafts */ 1191 WLAN_EID_PEER_MGMT = 117, 1192 WLAN_EID_CHAN_SWITCH_PARAM = 118, 1193 WLAN_EID_MESH_AWAKE_WINDOW = 119, 1194 WLAN_EID_BEACON_TIMING = 120, 1195 WLAN_EID_MCCAOP_SETUP_REQ = 121, 1196 WLAN_EID_MCCAOP_SETUP_RESP = 122, 1197 WLAN_EID_MCCAOP_ADVERT = 123, 1198 WLAN_EID_MCCAOP_TEARDOWN = 124, 1199 WLAN_EID_GANN = 125, 1200 WLAN_EID_RANN = 126, 1201 WLAN_EID_PREQ = 130, 1202 WLAN_EID_PREP = 131, 1203 WLAN_EID_PERR = 132, 1204 WLAN_EID_PXU = 137, 1205 WLAN_EID_PXUC = 138, 1206 WLAN_EID_AUTH_MESH_PEER_EXCH = 139, 1207 WLAN_EID_MIC = 140, 1208 1209 WLAN_EID_PWR_CONSTRAINT = 32, 1210 WLAN_EID_PWR_CAPABILITY = 33, 1211 WLAN_EID_TPC_REQUEST = 34, 1212 WLAN_EID_TPC_REPORT = 35, 1213 WLAN_EID_SUPPORTED_CHANNELS = 36, 1214 WLAN_EID_CHANNEL_SWITCH = 37, 1215 WLAN_EID_MEASURE_REQUEST = 38, 1216 WLAN_EID_MEASURE_REPORT = 39, 1217 WLAN_EID_QUIET = 40, 1218 WLAN_EID_IBSS_DFS = 41, 1219 1220 WLAN_EID_ERP_INFO = 42, 1221 WLAN_EID_EXT_SUPP_RATES = 50, 1222 1223 WLAN_EID_HT_CAPABILITY = 45, 1224 WLAN_EID_HT_INFORMATION = 61, 1225 1226 WLAN_EID_RSN = 48, 1227 WLAN_EID_MMIE = 76, 1228 WLAN_EID_WPA = 221, 1229 WLAN_EID_GENERIC = 221, 1230 WLAN_EID_VENDOR_SPECIFIC = 221, 1231 WLAN_EID_QOS_PARAMETER = 222, 1232 1233 WLAN_EID_AP_CHAN_REPORT = 51, 1234 WLAN_EID_NEIGHBOR_REPORT = 52, 1235 WLAN_EID_RCPI = 53, 1236 WLAN_EID_BSS_AVG_ACCESS_DELAY = 63, 1237 WLAN_EID_ANTENNA_INFO = 64, 1238 WLAN_EID_RSNI = 65, 1239 WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66, 1240 WLAN_EID_BSS_AVAILABLE_CAPACITY = 67, 1241 WLAN_EID_BSS_AC_ACCESS_DELAY = 68, 1242 WLAN_EID_RRM_ENABLED_CAPABILITIES = 70, 1243 WLAN_EID_MULTIPLE_BSSID = 71, 1244 WLAN_EID_BSS_COEX_2040 = 72, 1245 WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74, 1246 WLAN_EID_EXT_CAPABILITY = 127, 1247 1248 WLAN_EID_MOBILITY_DOMAIN = 54, 1249 WLAN_EID_FAST_BSS_TRANSITION = 55, 1250 WLAN_EID_TIMEOUT_INTERVAL = 56, 1251 WLAN_EID_RIC_DATA = 57, 1252 WLAN_EID_RIC_DESCRIPTOR = 75, 1253 1254 WLAN_EID_DSE_REGISTERED_LOCATION = 58, 1255 WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59, 1256 WLAN_EID_EXT_CHANSWITCH_ANN = 60, 1257 }; 1258 1259 /* Action category code */ 1260 enum ieee80211_category { 1261 WLAN_CATEGORY_SPECTRUM_MGMT = 0, 1262 WLAN_CATEGORY_QOS = 1, 1263 WLAN_CATEGORY_DLS = 2, 1264 WLAN_CATEGORY_BACK = 3, 1265 WLAN_CATEGORY_PUBLIC = 4, 1266 WLAN_CATEGORY_HT = 7, 1267 WLAN_CATEGORY_SA_QUERY = 8, 1268 WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9, 1269 WLAN_CATEGORY_MESH_ACTION = 13, 1270 WLAN_CATEGORY_MULTIHOP_ACTION = 14, 1271 WLAN_CATEGORY_SELF_PROTECTED = 15, 1272 WLAN_CATEGORY_WMM = 17, 1273 /* TODO: remove MESH_PATH_SEL after mesh is updated 1274 * to current 802.11s draft */ 1275 WLAN_CATEGORY_MESH_PATH_SEL = 32, 1276 WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, 1277 WLAN_CATEGORY_VENDOR_SPECIFIC = 127, 1278 }; 1279 1280 /* SPECTRUM_MGMT action code */ 1281 enum ieee80211_spectrum_mgmt_actioncode { 1282 WLAN_ACTION_SPCT_MSR_REQ = 0, 1283 WLAN_ACTION_SPCT_MSR_RPRT = 1, 1284 WLAN_ACTION_SPCT_TPC_REQ = 2, 1285 WLAN_ACTION_SPCT_TPC_RPRT = 3, 1286 WLAN_ACTION_SPCT_CHL_SWITCH = 4, 1287 }; 1288 1289 /* HT action codes */ 1290 enum ieee80211_ht_actioncode { 1291 WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0, 1292 WLAN_HT_ACTION_SMPS = 1, 1293 WLAN_HT_ACTION_PSMP = 2, 1294 WLAN_HT_ACTION_PCO_PHASE = 3, 1295 WLAN_HT_ACTION_CSI = 4, 1296 WLAN_HT_ACTION_NONCOMPRESSED_BF = 5, 1297 WLAN_HT_ACTION_COMPRESSED_BF = 6, 1298 WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, 1299 }; 1300 1301 /* Security key length */ 1302 enum ieee80211_key_len { 1303 WLAN_KEY_LEN_WEP40 = 5, 1304 WLAN_KEY_LEN_WEP104 = 13, 1305 WLAN_KEY_LEN_CCMP = 16, 1306 WLAN_KEY_LEN_TKIP = 32, 1307 WLAN_KEY_LEN_AES_CMAC = 16, 1308 }; 1309 1310 /** 1311 * enum - mesh path selection protocol identifier 1312 * 1313 * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol 1314 * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will 1315 * be specified in a vendor specific information element 1316 */ 1317 enum { 1318 IEEE80211_PATH_PROTOCOL_HWMP = 0, 1319 IEEE80211_PATH_PROTOCOL_VENDOR = 255, 1320 }; 1321 1322 /** 1323 * enum - mesh path selection metric identifier 1324 * 1325 * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric 1326 * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be 1327 * specified in a vendor specific information element 1328 */ 1329 enum { 1330 IEEE80211_PATH_METRIC_AIRTIME = 0, 1331 IEEE80211_PATH_METRIC_VENDOR = 255, 1332 }; 1333 1334 1335 /* 1336 * IEEE 802.11-2007 7.3.2.9 Country information element 1337 * 1338 * Minimum length is 8 octets, ie len must be evenly 1339 * divisible by 2 1340 */ 1341 1342 /* Although the spec says 8 I'm seeing 6 in practice */ 1343 #define IEEE80211_COUNTRY_IE_MIN_LEN 6 1344 1345 /* The Country String field of the element shall be 3 octets in length */ 1346 #define IEEE80211_COUNTRY_STRING_LEN 3 1347 1348 /* 1349 * For regulatory extension stuff see IEEE 802.11-2007 1350 * Annex I (page 1141) and Annex J (page 1147). Also 1351 * review 7.3.2.9. 1352 * 1353 * When dot11RegulatoryClassesRequired is true and the 1354 * first_channel/reg_extension_id is >= 201 then the IE 1355 * compromises of the 'ext' struct represented below: 1356 * 1357 * - Regulatory extension ID - when generating IE this just needs 1358 * to be monotonically increasing for each triplet passed in 1359 * the IE 1360 * - Regulatory class - index into set of rules 1361 * - Coverage class - index into air propagation time (Table 7-27), 1362 * in microseconds, you can compute the air propagation time from 1363 * the index by multiplying by 3, so index 10 yields a propagation 1364 * of 10 us. Valid values are 0-31, values 32-255 are not defined 1365 * yet. A value of 0 inicates air propagation of <= 1 us. 1366 * 1367 * See also Table I.2 for Emission limit sets and table 1368 * I.3 for Behavior limit sets. Table J.1 indicates how to map 1369 * a reg_class to an emission limit set and behavior limit set. 1370 */ 1371 #define IEEE80211_COUNTRY_EXTENSION_ID 201 1372 1373 /* 1374 * Channels numbers in the IE must be monotonically increasing 1375 * if dot11RegulatoryClassesRequired is not true. 1376 * 1377 * If dot11RegulatoryClassesRequired is true consecutive 1378 * subband triplets following a regulatory triplet shall 1379 * have monotonically increasing first_channel number fields. 1380 * 1381 * Channel numbers shall not overlap. 1382 * 1383 * Note that max_power is signed. 1384 */ 1385 struct ieee80211_country_ie_triplet { 1386 union { 1387 struct { 1388 u8 first_channel; 1389 u8 num_channels; 1390 s8 max_power; 1391 } __attribute__ ((packed)) chans; 1392 struct { 1393 u8 reg_extension_id; 1394 u8 reg_class; 1395 u8 coverage_class; 1396 } __attribute__ ((packed)) ext; 1397 }; 1398 } __attribute__ ((packed)); 1399 1400 enum ieee80211_timeout_interval_type { 1401 WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */, 1402 WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */, 1403 WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */, 1404 }; 1405 1406 /* BACK action code */ 1407 enum ieee80211_back_actioncode { 1408 WLAN_ACTION_ADDBA_REQ = 0, 1409 WLAN_ACTION_ADDBA_RESP = 1, 1410 WLAN_ACTION_DELBA = 2, 1411 }; 1412 1413 /* BACK (block-ack) parties */ 1414 enum ieee80211_back_parties { 1415 WLAN_BACK_RECIPIENT = 0, 1416 WLAN_BACK_INITIATOR = 1, 1417 }; 1418 1419 /* SA Query action */ 1420 enum ieee80211_sa_query_action { 1421 WLAN_ACTION_SA_QUERY_REQUEST = 0, 1422 WLAN_ACTION_SA_QUERY_RESPONSE = 1, 1423 }; 1424 1425 1426 /* A-MSDU 802.11n */ 1427 #define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080 1428 1429 /* cipher suite selectors */ 1430 #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 1431 #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 1432 #define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 1433 /* reserved: 0x000FAC03 */ 1434 #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 1435 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 1436 #define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 1437 1438 /* AKM suite selectors */ 1439 #define WLAN_AKM_SUITE_8021X 0x000FAC01 1440 #define WLAN_AKM_SUITE_PSK 0x000FAC02 1441 #define WLAN_AKM_SUITE_SAE 0x000FAC08 1442 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09 1443 1444 #define WLAN_MAX_KEY_LEN 32 1445 1446 #define WLAN_PMKID_LEN 16 1447 1448 /** 1449 * ieee80211_get_qos_ctl - get pointer to qos control bytes 1450 * @hdr: the frame 1451 * 1452 * The qos ctrl bytes come after the frame_control, duration, seq_num 1453 * and 3 or 4 addresses of length ETH_ALEN. 1454 * 3 addr: 2 + 2 + 2 + 3*6 = 24 1455 * 4 addr: 2 + 2 + 2 + 4*6 = 30 1456 */ 1457 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr) 1458 { 1459 if (ieee80211_has_a4(hdr->frame_control)) 1460 return (u8 *)hdr + 30; 1461 else 1462 return (u8 *)hdr + 24; 1463 } 1464 1465 /** 1466 * ieee80211_get_SA - get pointer to SA 1467 * @hdr: the frame 1468 * 1469 * Given an 802.11 frame, this function returns the offset 1470 * to the source address (SA). It does not verify that the 1471 * header is long enough to contain the address, and the 1472 * header must be long enough to contain the frame control 1473 * field. 1474 */ 1475 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr) 1476 { 1477 if (ieee80211_has_a4(hdr->frame_control)) 1478 return hdr->addr4; 1479 if (ieee80211_has_fromds(hdr->frame_control)) 1480 return hdr->addr3; 1481 return hdr->addr2; 1482 } 1483 1484 /** 1485 * ieee80211_get_DA - get pointer to DA 1486 * @hdr: the frame 1487 * 1488 * Given an 802.11 frame, this function returns the offset 1489 * to the destination address (DA). It does not verify that 1490 * the header is long enough to contain the address, and the 1491 * header must be long enough to contain the frame control 1492 * field. 1493 */ 1494 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) 1495 { 1496 if (ieee80211_has_tods(hdr->frame_control)) 1497 return hdr->addr3; 1498 else 1499 return hdr->addr1; 1500 } 1501 1502 /** 1503 * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame 1504 * @hdr: the frame (buffer must include at least the first octet of payload) 1505 */ 1506 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) 1507 { 1508 if (ieee80211_is_disassoc(hdr->frame_control) || 1509 ieee80211_is_deauth(hdr->frame_control)) 1510 return true; 1511 1512 if (ieee80211_is_action(hdr->frame_control)) { 1513 u8 *category; 1514 1515 /* 1516 * Action frames, excluding Public Action frames, are Robust 1517 * Management Frames. However, if we are looking at a Protected 1518 * frame, skip the check since the data may be encrypted and 1519 * the frame has already been found to be a Robust Management 1520 * Frame (by the other end). 1521 */ 1522 if (ieee80211_has_protected(hdr->frame_control)) 1523 return true; 1524 category = ((u8 *) hdr) + 24; 1525 return *category != WLAN_CATEGORY_PUBLIC && 1526 *category != WLAN_CATEGORY_HT && 1527 *category != WLAN_CATEGORY_SELF_PROTECTED && 1528 *category != WLAN_CATEGORY_VENDOR_SPECIFIC; 1529 } 1530 1531 return false; 1532 } 1533 1534 /** 1535 * ieee80211_fhss_chan_to_freq - get channel frequency 1536 * @channel: the FHSS channel 1537 * 1538 * Convert IEEE802.11 FHSS channel to frequency (MHz) 1539 * Ref IEEE 802.11-2007 section 14.6 1540 */ 1541 static inline int ieee80211_fhss_chan_to_freq(int channel) 1542 { 1543 if ((channel > 1) && (channel < 96)) 1544 return channel + 2400; 1545 else 1546 return -1; 1547 } 1548 1549 /** 1550 * ieee80211_freq_to_fhss_chan - get channel 1551 * @freq: the channels frequency 1552 * 1553 * Convert frequency (MHz) to IEEE802.11 FHSS channel 1554 * Ref IEEE 802.11-2007 section 14.6 1555 */ 1556 static inline int ieee80211_freq_to_fhss_chan(int freq) 1557 { 1558 if ((freq > 2401) && (freq < 2496)) 1559 return freq - 2400; 1560 else 1561 return -1; 1562 } 1563 1564 /** 1565 * ieee80211_dsss_chan_to_freq - get channel center frequency 1566 * @channel: the DSSS channel 1567 * 1568 * Convert IEEE802.11 DSSS channel to the center frequency (MHz). 1569 * Ref IEEE 802.11-2007 section 15.6 1570 */ 1571 static inline int ieee80211_dsss_chan_to_freq(int channel) 1572 { 1573 if ((channel > 0) && (channel < 14)) 1574 return 2407 + (channel * 5); 1575 else if (channel == 14) 1576 return 2484; 1577 else 1578 return -1; 1579 } 1580 1581 /** 1582 * ieee80211_freq_to_dsss_chan - get channel 1583 * @freq: the frequency 1584 * 1585 * Convert frequency (MHz) to IEEE802.11 DSSS channel 1586 * Ref IEEE 802.11-2007 section 15.6 1587 * 1588 * This routine selects the channel with the closest center frequency. 1589 */ 1590 static inline int ieee80211_freq_to_dsss_chan(int freq) 1591 { 1592 if ((freq >= 2410) && (freq < 2475)) 1593 return (freq - 2405) / 5; 1594 else if ((freq >= 2482) && (freq < 2487)) 1595 return 14; 1596 else 1597 return -1; 1598 } 1599 1600 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back 1601 * Ref IEEE 802.11-2007 section 18.4.6.2 1602 * 1603 * The channels and frequencies are the same as those defined for DSSS 1604 */ 1605 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan) 1606 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq) 1607 1608 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back 1609 * Ref IEEE 802.11-2007 section 19.4.2 1610 */ 1611 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan) 1612 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq) 1613 1614 /** 1615 * ieee80211_ofdm_chan_to_freq - get channel center frequency 1616 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1617 * @channel: the OFDM channel 1618 * 1619 * Convert IEEE802.11 OFDM channel to center frequency (MHz) 1620 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1621 */ 1622 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel) 1623 { 1624 if ((channel > 0) && (channel <= 200) && 1625 (s_freq >= 4000)) 1626 return s_freq + (channel * 5); 1627 else 1628 return -1; 1629 } 1630 1631 /** 1632 * ieee80211_freq_to_ofdm_channel - get channel 1633 * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz 1634 * @freq: the frequency 1635 * 1636 * Convert frequency (MHz) to IEEE802.11 OFDM channel 1637 * Ref IEEE 802.11-2007 section 17.3.8.3.2 1638 * 1639 * This routine selects the channel with the closest center frequency. 1640 */ 1641 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq) 1642 { 1643 if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) && 1644 (s_freq >= 4000)) 1645 return (freq + 2 - s_freq) / 5; 1646 else 1647 return -1; 1648 } 1649 1650 /** 1651 * ieee80211_tu_to_usec - convert time units (TU) to microseconds 1652 * @tu: the TUs 1653 */ 1654 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu) 1655 { 1656 return 1024 * tu; 1657 } 1658 1659 /** 1660 * ieee80211_check_tim - check if AID bit is set in TIM 1661 * @tim: the TIM IE 1662 * @tim_len: length of the TIM IE 1663 * @aid: the AID to look for 1664 */ 1665 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim, 1666 u8 tim_len, u16 aid) 1667 { 1668 u8 mask; 1669 u8 index, indexn1, indexn2; 1670 1671 if (unlikely(!tim || tim_len < sizeof(*tim))) 1672 return false; 1673 1674 aid &= 0x3fff; 1675 index = aid / 8; 1676 mask = 1 << (aid & 7); 1677 1678 indexn1 = tim->bitmap_ctrl & 0xfe; 1679 indexn2 = tim_len + indexn1 - 4; 1680 1681 if (index < indexn1 || index > indexn2) 1682 return false; 1683 1684 index -= indexn1; 1685 1686 return !!(tim->virtual_map[index] & mask); 1687 } 1688 1689 #endif /* LINUX_IEEE80211_H */ 1690