1 /*- 2 * Copyright (c) 2020-2021 The FreeBSD Foundation 3 * 4 * This software was developed by Björn Zeeb under sponsorship from 5 * the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _LINUXKPI_LINUX_IEEE80211_H 32 #define _LINUXKPI_LINUX_IEEE80211_H 33 34 #include <sys/types.h> 35 #include <net80211/ieee80211.h> 36 37 #include <asm/unaligned.h> 38 #include <linux/bitops.h> 39 #include <linux/if_ether.h> 40 41 /* linux_80211.c */ 42 extern int debug_80211; 43 44 45 #define IEEE80211_CCMP_HDR_LEN 8 /* 802.11i .. net80211 comment */ 46 #define IEEE80211_CCMP_PN_LEN 6 47 #define IEEE80211_CCMP_MIC_LEN 8 /* || 16 */ 48 #define IEEE80211_GCMP_HDR_LEN 8 49 #define IEEE80211_GCMP_PN_LEN 6 50 #define IEEE80211_GMAC_PN_LEN 6 51 52 #define IEEE80211_MAX_PN_LEN 16 53 54 #define IEEE80211_INVAL_HW_QUEUE ((uint8_t)-1) 55 56 #define IEEE80211_MAX_AMPDU_BUF_HT 0x40 57 #define IEEE80211_MAX_AMPDU_BUF 256 /* for HE? */ 58 59 #define IEEE80211_MAX_DATA_LEN (2300 + IEEE80211_CRC_LEN) 60 61 #define IEEE80211_MAX_MPDU_LEN_HT_BA 4095 /* 9.3.2.1 Format of Data frames; non-VHT non-DMG STA */ 62 #define IEEE80211_MAX_MPDU_LEN_HT_3839 3839 63 #define IEEE80211_MAX_MPDU_LEN_VHT_3895 3895 64 #define IEEE80211_MAX_MPDU_LEN_VHT_7991 7991 65 #define IEEE80211_MAX_MPDU_LEN_VHT_11454 11454 66 67 #define IEEE80211_MAX_RTS_THRESHOLD 2346 /* net80211::IEEE80211_RTS_MAX */ 68 69 #define IEEE80211_MIN_ACTION_SIZE 23 /* ? */ 70 71 /* Wi-Fi Peer-to-Peer (P2P) Technical Specification */ 72 #define IEEE80211_P2P_OPPPS_CTWINDOW_MASK 0x7f 73 #define IEEE80211_P2P_OPPPS_ENABLE_BIT BIT(7) 74 75 #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007 76 #define IEEE80211_QOS_CTL_EOSP 0x0010 77 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT 0x0080 /* 9.2.4.5.1, Table 9-6 QoS Control Field */ 78 79 #define IEEE80211_RATE_SHORT_PREAMBLE BIT(0) 80 81 enum ieee80211_rate_control_changed_flags { 82 IEEE80211_RC_BW_CHANGED = BIT(0), 83 IEEE80211_RC_NSS_CHANGED = BIT(1), 84 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 85 }; 86 87 #define IEEE80211_SCTL_FRAG IEEE80211_SEQ_FRAG_MASK 88 #define IEEE80211_SCTL_SEQ IEEE80211_SEQ_SEQ_MASK 89 90 #define IEEE80211_TKIP_ICV_LEN 4 91 #define IEEE80211_TKIP_IV_LEN 8 /* WEP + KID + EXT */ 92 93 #define IEEE80211_VHT_EXT_NSS_BW_CAPABLE (1 << 13) /* assigned to tx_highest */ 94 95 #define IEEE80211_VHT_MAX_AMPDU_1024K 7 /* 9.4.2.56.3 A-MPDU Parameters field, Table 9-163 */ 96 97 #define IEEE80211_WEP_IV_LEN 3 /* net80211: IEEE80211_WEP_IVLEN */ 98 #define IEEE80211_WEP_ICV_LEN 4 99 100 #define WLAN_AUTH_OPEN __LINE__ /* TODO FIXME brcmfmac */ 101 #define WLAN_CAPABILITY_IBSS __LINE__ /* TODO FIXME no longer used? */ 102 #define WLAN_CAPABILITY_SHORT_PREAMBLE __LINE__ /* TODO FIXME brcmfmac */ 103 #define WLAN_CAPABILITY_SHORT_SLOT_TIME __LINE__ /* TODO FIXME brcmfmac */ 104 105 106 #define WLAN_MAX_KEY_LEN 32 /* TODO FIXME brcmfmac */ 107 #define WLAN_PMKID_LEN 16 /* TODO FIXME brcmfmac */ 108 109 #define WLAN_KEY_LEN_CCMP 16 110 #define WLAN_KEY_LEN_GCMP_256 32 111 112 /* 9.4.2.56.3, Table 9-163 Subfields of the A-MPDU Parameters field */ 113 enum ieee80211_min_mpdu_start_spacing { 114 IEEE80211_HT_MPDU_DENSITY_NONE = 0, 115 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4us */ 116 IEEE80211_HT_MPDU_DENSITY_16 = 7, /* 16us */ 117 }; 118 119 /* 9.4.2.57, Table 9-168, HT Operation element fields and subfields */ 120 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 /* B24.. */ 121 122 #define IEEE80211_FCTL_STYPE IEEE80211_FC0_SUBTYPE_MASK 123 #define IEEE80211_FCTL_ORDER (IEEE80211_FC1_ORDER << 8) 124 125 #define IEEE80211_STYPE_ASSOC_REQ IEEE80211_FC0_SUBTYPE_ASSOC_REQ 126 #define IEEE80211_STYPE_REASSOC_REQ IEEE80211_FC0_SUBTYPE_REASSOC_REQ 127 #define IEEE80211_STYPE_PROBE_REQ IEEE80211_FC0_SUBTYPE_PROBE_REQ 128 #define IEEE80211_STYPE_DISASSOC IEEE80211_FC0_SUBTYPE_DISASSOC 129 #define IEEE80211_STYPE_AUTH IEEE80211_FC0_SUBTYPE_AUTH 130 #define IEEE80211_STYPE_DEAUTH IEEE80211_FC0_SUBTYPE_DEAUTH 131 #define IEEE80211_STYPE_ACTION IEEE80211_FC0_SUBTYPE_ACTION 132 133 #define IEEE80211_NUM_ACS 4 /* net8021::WME_NUM_AC */ 134 135 #define IEEE80211_MAX_SSID_LEN 32 /* 9.4.2.2 SSID element, net80211: IEEE80211_NWID_LEN */ 136 137 138 /* Figure 9-27, BAR Control field */ 139 #define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000 140 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12 141 142 #define IEEE80211_PPE_THRES_INFO_PPET_SIZE 1 /* TODO FIXME ax? */ 143 #define IEEE80211_PPE_THRES_NSS_MASK 2 /* TODO FIXME ax? */ 144 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS 3 /* TODO FIXME ax? */ 145 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK 8 /* TODO FIXME ax? */ 146 147 #define IEEE80211_HT_OP_MODE_PROTECTION 0x03 /* MASK */ 148 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0x00 149 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 0x01 150 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 0x02 151 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 0x03 152 153 154 /* 9.6.13.1, Table 9-342 TDLS Action field values. */ 155 enum ieee80211_tdls_action_code { 156 WLAN_TDLS_SETUP_REQUEST = 0, 157 WLAN_TDLS_SETUP_RESPONSE = 1, 158 WLAN_TDLS_SETUP_CONFIRM = 2, 159 WLAN_TDLS_TEARDOWN = 3, 160 WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4, 161 WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5, 162 WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6, 163 WLAN_TDLS_PEER_PSM_REQUEST = 7, 164 WLAN_TDLS_PEER_PSM_RESPONSE = 8, 165 WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9, 166 WLAN_TDLS_DISCOVERY_REQUEST = 10, 167 /* 11-255 reserved */ 168 }; 169 170 /* 9.4.2.27, Table 9-135. Extended Capabilities field. */ 171 /* This is split up into octets CAPA1 = octet 1, ... */ 172 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING BIT(2 % 8) 173 #define WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT BIT(22 % 8) 174 #define WLAN_EXT_CAPA8_OPMODE_NOTIF BIT(62 % 8) 175 #define WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT BIT(5) /* XXX */ 176 #define WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT BIT(7) /* XXX */ 177 178 179 /* iwlwifi/mvm/utils:: for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) */ 180 /* Would be so much easier if we'd define constants to the same. */ 181 enum ieee80211_ac_numbers { 182 IEEE80211_AC_VO = 0, /* net80211::WME_AC_VO */ 183 IEEE80211_AC_VI = 1, /* net80211::WME_AC_VI */ 184 IEEE80211_AC_BE = 2, /* net80211::WME_AC_BE */ 185 IEEE80211_AC_BK = 3, /* net80211::WME_AC_BK */ 186 }; 187 188 #define IEEE80211_MAX_QUEUES 16 /* Assume IEEE80211_NUM_TIDS for the moment. */ 189 190 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 1 191 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI 2 192 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4 193 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE 8 194 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0xf 195 196 struct vht_mcs { 197 uint16_t rx_mcs_map; 198 uint16_t rx_highest; 199 uint16_t tx_mcs_map; 200 uint16_t tx_highest; 201 }; 202 203 struct ieee80211_vht_cap { 204 struct vht_mcs supp_mcs;; 205 __le32 vht_cap_info; 206 }; 207 208 enum ieee80211_ht_max_ampdu_len { 209 IEEE80211_HT_MAX_AMPDU_64K 210 }; 211 212 enum ieee80211_ampdu_mlme_action { 213 IEEE80211_AMPDU_RX_START, 214 IEEE80211_AMPDU_RX_STOP, 215 IEEE80211_AMPDU_TX_OPERATIONAL, 216 IEEE80211_AMPDU_TX_START, 217 IEEE80211_AMPDU_TX_START_DELAY_ADDBA, 218 IEEE80211_AMPDU_TX_START_IMMEDIATE, 219 IEEE80211_AMPDU_TX_STOP_CONT, 220 IEEE80211_AMPDU_TX_STOP_FLUSH, 221 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT 222 }; 223 224 enum ieee80211_chanctx_switch_mode { 225 CHANCTX_SWMODE_REASSIGN_VIF, 226 CHANCTX_SWMODE_SWAP_CONTEXTS, 227 }; 228 229 enum ieee80211_chanctx_change_flags { 230 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH = BIT(0), 231 IEEE80211_CHANCTX_CHANGE_RADAR = BIT(1), 232 IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(2), 233 IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(3), 234 }; 235 236 enum ieee80211_frame_release_type { 237 IEEE80211_FRAME_RELEASE_PSPOLL = 1, 238 IEEE80211_FRAME_RELEASE_UAPSD = 2, 239 }; 240 241 enum ieee80211_p2p_attr_ids { 242 IEEE80211_P2P_ATTR_DEVICE_ID, 243 IEEE80211_P2P_ATTR_DEVICE_INFO, 244 IEEE80211_P2P_ATTR_GROUP_ID, 245 IEEE80211_P2P_ATTR_LISTEN_CHANNEL, 246 }; 247 248 enum ieee80211_reconfig_type { 249 IEEE80211_RECONFIG_TYPE_RESTART, 250 IEEE80211_RECONFIG_TYPE_SUSPEND, 251 }; 252 253 enum ieee80211_roc_type { 254 IEEE80211_ROC_TYPE_MGMT_TX, 255 IEEE80211_ROC_TYPE_NORMAL, 256 }; 257 258 enum ieee80211_smps_mode { 259 IEEE80211_SMPS_OFF, 260 IEEE80211_SMPS_STATIC, 261 IEEE80211_SMPS_DYNAMIC, 262 IEEE80211_SMPS_AUTOMATIC, 263 IEEE80211_SMPS_NUM_MODES, 264 }; 265 266 /* net80211::IEEE80211_S_* different but represents the state machine. */ 267 /* Note: order here is important! */ 268 enum ieee80211_sta_state { 269 IEEE80211_STA_NOTEXIST, 270 IEEE80211_STA_NONE, 271 IEEE80211_STA_AUTH, 272 IEEE80211_STA_ASSOC, 273 IEEE80211_STA_AUTHORIZED, /* 802.1x */ 274 }; 275 276 enum ieee80211_sta_rx_bw { 277 IEEE80211_STA_RX_BW_20, 278 IEEE80211_STA_RX_BW_40, 279 IEEE80211_STA_RX_BW_80, 280 IEEE80211_STA_RX_BW_160, 281 }; 282 283 enum ieee80211_tx_info_flags { 284 /* XXX TODO .. right shift numbers - not sure where that came from? */ 285 IEEE80211_TX_CTL_AMPDU = BIT(0), 286 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 287 IEEE80211_TX_CTL_NO_ACK = BIT(2), 288 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(3), 289 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(4), 290 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(5), 291 IEEE80211_TX_STATUS_EOSP = BIT(6), 292 IEEE80211_TX_STAT_ACK = BIT(7), 293 IEEE80211_TX_STAT_AMPDU = BIT(8), 294 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(9), 295 IEEE80211_TX_STAT_TX_FILTERED = BIT(10), 296 IEEE80211_TX_STAT_NOACK_TRANSMITTED = BIT(11), 297 }; 298 299 enum ieee80211_tx_control_flags { 300 /* XXX TODO .. right shift numbers */ 301 IEEE80211_TX_CTRL_PORT_CTRL_PROTO = BIT(0), 302 }; 303 304 enum ieee80211_tx_rate_flags { 305 /* XXX TODO .. right shift numbers */ 306 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(0), 307 IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(1), 308 IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(2), 309 IEEE80211_TX_RC_GREEN_FIELD = BIT(3), 310 IEEE80211_TX_RC_MCS = BIT(4), 311 IEEE80211_TX_RC_SHORT_GI = BIT(5), 312 IEEE80211_TX_RC_VHT_MCS = BIT(6), 313 }; 314 315 #define IEEE80211_HT_CTL_LEN 4 316 317 struct ieee80211_hdr { /* net80211::ieee80211_frame */ 318 __le16 frame_control; 319 __le16 duration_id; 320 uint8_t addr1[ETH_ALEN]; 321 uint8_t addr2[ETH_ALEN]; 322 uint8_t addr3[ETH_ALEN]; 323 __le16 seq_ctrl; 324 uint8_t addr4[ETH_ALEN]; 325 }; 326 327 struct ieee80211_vendor_ie { 328 }; 329 330 /* 9.3.3.2 Format of Management frames */ 331 struct ieee80211_mgmt { 332 __le16 frame_control; 333 __le16 duration_id; 334 uint8_t da[ETH_ALEN]; 335 uint8_t sa[ETH_ALEN]; 336 uint8_t bssid[ETH_ALEN]; 337 __le16 seq_ctrl; 338 union { 339 /* 9.3.3.3 Beacon frame format */ 340 struct { 341 uint64_t timestamp; 342 uint16_t beacon_int; 343 uint16_t capab_info; 344 uint8_t variable[0]; 345 } beacon; 346 /* 9.3.3.10 Probe Request frame format */ 347 struct { 348 uint8_t variable[0]; 349 } probe_req; 350 /* 9.3.3.11 Probe Response frame format */ 351 struct { 352 uint64_t timestamp; 353 uint16_t beacon_int; 354 uint16_t capab_info; 355 uint8_t variable[0]; 356 } probe_resp; 357 /* 9.3.3.14 Action frame format */ 358 struct { 359 /* 9.4.1.11 Action field */ 360 uint8_t category; 361 /* 9.6.8 Public Action details */ 362 union { 363 /* 9.6.8.33 Fine Timing Measurement frame format */ 364 struct { 365 uint8_t dialog_token; 366 uint8_t follow_up; 367 uint8_t tod[6]; 368 uint8_t toa[6]; 369 uint16_t tod_error; 370 uint16_t toa_error; 371 uint8_t variable[0]; 372 } ftm; 373 } u; 374 } action; 375 } u; 376 }; 377 378 #define MHZ_TO_KHZ(_f) ((_f) * 1000) 379 #define DBI_TO_MBI(_g) ((_g) * 100) 380 #define MBI_TO_DBI(_x) ((_x) / 100) 381 #define DBM_TO_MBM(_g) ((_g) * 100) 382 #define MBM_TO_DBM(_x) ((_x) / 100) 383 384 #define IEEE80211_SEQ_TO_SN(_seqn) (((_seqn) & IEEE80211_SEQ_SEQ_MASK) >> \ 385 IEEE80211_SEQ_SEQ_SHIFT) 386 387 /* Time unit (TU) to .. See net80211: IEEE80211_DUR_TU */ 388 #define TU_TO_JIFFIES(_tu) (usecs_to_jiffies(_tu) * 1024) 389 #define TU_TO_EXP_TIME(_tu) (jiffies + TU_TO_JIFFIES(_tu)) 390 391 /* 9.4.2.21.1, Table 9-82. */ 392 #define IEEE80211_SPCT_MSR_RPRT_TYPE_LCI 8 393 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC 11 394 395 /* 9.4.2.1, Table 9-77. Element IDs. */ 396 enum ieee80211_eid { 397 WLAN_EID_SSID = 0, 398 WLAN_EID_SUPP_RATES = 1, 399 WLAN_EID_DS_PARAMS = 3, 400 WLAN_EID_TIM = 5, 401 WLAN_EID_COUNTRY = 7, /* IEEE80211_ELEMID_COUNTRY */ 402 WLAN_EID_REQUEST = 10, 403 WLAN_EID_CHANNEL_SWITCH = 37, 404 WLAN_EID_MEASURE_REPORT = 39, 405 WLAN_EID_RSN = 48, /* IEEE80211_ELEMID_RSN */ 406 WLAN_EID_EXT_SUPP_RATES = 50, 407 WLAN_EID_EXT_CHANSWITCH_ANN = 60, 408 WLAN_EID_EXT_CAPABILITY = 127, 409 WLAN_EID_VENDOR_SPECIFIC = 221, 410 }; 411 412 /* 9.4.1.7, Table 9-45. Reason codes. */ 413 enum ieee80211_reason_code { 414 /* reserved = 0, */ 415 WLAN_REASON_UNSPECIFIED = 1, 416 WLAN_REASON_DEAUTH_LEAVING = 3, /* LEAVING_NETWORK_DEAUTH */ 417 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED = 26, 418 }; 419 420 /* 9.4.1.9, Table 9-46. Status codes. */ 421 enum ieee80211_status_code { 422 WLAN_STATUS_SUCCESS = 0, 423 WLAN_STATUS_AUTH_TIMEOUT = 16, /* REJECTED_SEQUENCE_TIMEOUT */ 424 }; 425 426 /* net80211: IEEE80211_IS_CTL() */ 427 static __inline bool 428 ieee80211_is_ctl(__le16 fc) 429 { 430 __le16 v; 431 432 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 433 v = htole16(IEEE80211_FC0_TYPE_CTL); 434 435 return (fc == v); 436 } 437 438 /* net80211: IEEE80211_IS_DATA() */ 439 static __inline bool 440 ieee80211_is_data(__le16 fc) 441 { 442 __le16 v; 443 444 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 445 v = htole16(IEEE80211_FC0_TYPE_DATA); 446 447 return (fc == v); 448 } 449 450 /* net80211: IEEE80211_IS_QOSDATA() */ 451 static __inline bool 452 ieee80211_is_data_qos(__le16 fc) 453 { 454 __le16 v; 455 456 fc &= htole16(IEEE80211_FC0_SUBTYPE_QOS | IEEE80211_FC0_TYPE_MASK | 457 IEEE80211_FC0_VERSION_MASK); 458 v = htole16(IEEE80211_FC0_QOSDATA); 459 460 return (fc == v); 461 } 462 463 /* net80211: IEEE80211_IS_MGMT() */ 464 static __inline bool 465 ieee80211_is_mgmt(__le16 fc) 466 { 467 __le16 v; 468 469 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 470 v = htole16(IEEE80211_FC0_TYPE_MGT); 471 472 return (fc == v); 473 } 474 475 476 /* Derived from net80211::ieee80211_anyhdrsize. */ 477 static __inline unsigned int 478 ieee80211_hdrlen(__le16 fc) 479 { 480 unsigned int size; 481 482 if (ieee80211_is_ctl(fc)) { 483 switch (fc & htole16(IEEE80211_FC0_SUBTYPE_MASK)) { 484 case htole16(IEEE80211_FC0_SUBTYPE_CTS): 485 case htole16(IEEE80211_FC0_SUBTYPE_ACK): 486 return sizeof(struct ieee80211_frame_ack); 487 case htole16(IEEE80211_FC0_SUBTYPE_BAR): 488 return sizeof(struct ieee80211_frame_bar); 489 } 490 return (sizeof(struct ieee80211_frame_min)); 491 } 492 493 size = sizeof(struct ieee80211_frame); 494 if (ieee80211_is_data(fc)) { 495 if ((fc & htole16(IEEE80211_FC1_DIR_MASK << 8)) == 496 htole16(IEEE80211_FC1_DIR_DSTODS << 8)) 497 size += IEEE80211_ADDR_LEN; 498 if ((fc & htole16(IEEE80211_FC0_SUBTYPE_QOS | 499 IEEE80211_FC0_TYPE_MASK)) == 500 htole16(IEEE80211_FC0_SUBTYPE_QOS | 501 IEEE80211_FC0_TYPE_DATA)) 502 size += sizeof(uint16_t); 503 } 504 505 if (ieee80211_is_mgmt(fc)) { 506 #ifdef __notyet__ 507 if (debug_80211 > 0) 508 printf("XXX-BZ %s: TODO? fc %#04x size %u\n", 509 __func__, fc, size); 510 #endif 511 ; 512 } 513 514 return (size); 515 } 516 517 #endif /* _LINUXKPI_LINUX_IEEE80211_H */ 518