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_A_MSDU_PRESENT 0x0080 /* 9.2.4.5.1, Table 9-6 QoS Control Field */ 76 77 #define IEEE80211_RATE_SHORT_PREAMBLE BIT(0) 78 79 enum ieee80211_rate_control_changed_flags { 80 IEEE80211_RC_BW_CHANGED = BIT(0), 81 IEEE80211_RC_NSS_CHANGED = BIT(1), 82 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 83 }; 84 85 #define IEEE80211_SCTL_FRAG IEEE80211_SEQ_FRAG_MASK 86 #define IEEE80211_SCTL_SEQ IEEE80211_SEQ_SEQ_MASK 87 88 #define IEEE80211_TKIP_ICV_LEN 4 89 #define IEEE80211_TKIP_IV_LEN 8 /* WEP + KID + EXT */ 90 91 #define IEEE80211_VHT_EXT_NSS_BW_CAPABLE (1 << 13) /* assigned to tx_highest */ 92 93 #define IEEE80211_VHT_MAX_AMPDU_1024K 7 /* 9.4.2.56.3 A-MPDU Parameters field, Table 9-163 */ 94 95 #define IEEE80211_WEP_IV_LEN 3 /* net80211: IEEE80211_WEP_IVLEN */ 96 #define IEEE80211_WEP_ICV_LEN 4 97 98 #define WLAN_AUTH_OPEN __LINE__ /* TODO FIXME brcmfmac */ 99 #define WLAN_CAPABILITY_IBSS __LINE__ /* TODO FIXME no longer used? */ 100 #define WLAN_CAPABILITY_SHORT_PREAMBLE __LINE__ /* TODO FIXME brcmfmac */ 101 #define WLAN_CAPABILITY_SHORT_SLOT_TIME __LINE__ /* TODO FIXME brcmfmac */ 102 103 104 #define WLAN_MAX_KEY_LEN 32 /* TODO FIXME brcmfmac */ 105 #define WLAN_PMKID_LEN 16 /* TODO FIXME brcmfmac */ 106 107 #define WLAN_KEY_LEN_CCMP 16 108 #define WLAN_KEY_LEN_GCMP_256 32 109 110 /* 9.4.2.56.3, Table 9-163 Subfields of the A-MPDU Parameters field */ 111 enum ieee80211_min_mpdu_start_spacing { 112 IEEE80211_HT_MPDU_DENSITY_4 = 5, /* 4us */ 113 IEEE80211_HT_MPDU_DENSITY_16 = 7, /* 16us */ 114 }; 115 116 /* 9.4.2.57, Table 9-168, HT Operation element fields and subfields */ 117 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT 0x0080 /* B24.. */ 118 119 #define IEEE80211_FCTL_STYPE IEEE80211_FC0_SUBTYPE_MASK 120 121 #define IEEE80211_STYPE_ASSOC_REQ IEEE80211_FC0_SUBTYPE_ASSOC_REQ 122 #define IEEE80211_STYPE_REASSOC_REQ IEEE80211_FC0_SUBTYPE_REASSOC_REQ 123 #define IEEE80211_STYPE_PROBE_REQ IEEE80211_FC0_SUBTYPE_PROBE_REQ 124 #define IEEE80211_STYPE_DISASSOC IEEE80211_FC0_SUBTYPE_DISASSOC 125 #define IEEE80211_STYPE_AUTH IEEE80211_FC0_SUBTYPE_AUTH 126 #define IEEE80211_STYPE_DEAUTH IEEE80211_FC0_SUBTYPE_DEAUTH 127 #define IEEE80211_STYPE_ACTION IEEE80211_FC0_SUBTYPE_ACTION 128 129 #define IEEE80211_NUM_ACS 4 /* net8021::WME_NUM_AC */ 130 131 #define IEEE80211_MAX_SSID_LEN 32 /* 9.4.2.2 SSID element, net80211: IEEE80211_NWID_LEN */ 132 133 134 /* Figure 9-27, BAR Control field */ 135 #define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000 136 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12 137 138 #define IEEE80211_PPE_THRES_INFO_PPET_SIZE 1 /* TODO FIXME ax? */ 139 #define IEEE80211_PPE_THRES_NSS_MASK 2 /* TODO FIXME ax? */ 140 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS 3 /* TODO FIXME ax? */ 141 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK 8 /* TODO FIXME ax? */ 142 143 #define IEEE80211_HT_OP_MODE_PROTECTION 0x03 /* MASK */ 144 #define IEEE80211_HT_OP_MODE_PROTECTION_NONE 0x00 145 #define IEEE80211_HT_OP_MODE_PROTECTION_20MHZ 0x01 146 #define IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 0x02 147 #define IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER 0x03 148 149 150 /* 9.6.13.1, Table 9-342 TDLS Action field values. */ 151 enum ieee80211_tdls_action_code { 152 WLAN_TDLS_SETUP_REQUEST = 0, 153 WLAN_TDLS_SETUP_RESPONSE = 1, 154 WLAN_TDLS_SETUP_CONFIRM = 2, 155 WLAN_TDLS_TEARDOWN = 3, 156 WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4, 157 WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5, 158 WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6, 159 WLAN_TDLS_PEER_PSM_REQUEST = 7, 160 WLAN_TDLS_PEER_PSM_RESPONSE = 8, 161 WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9, 162 WLAN_TDLS_DISCOVERY_REQUEST = 10, 163 /* 11-255 reserved */ 164 }; 165 166 /* 9.4.2.27, Table 9-135. Extended Capabilities field. */ 167 /* This is split up into octets CAPA1 = octet 1, ... */ 168 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING BIT(2 % 8) 169 #define WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT BIT(22 % 8) 170 #define WLAN_EXT_CAPA8_OPMODE_NOTIF BIT(62 % 8) 171 #define WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT BIT(5) /* XXX */ 172 #define WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT BIT(7) /* XXX */ 173 174 175 /* iwlwifi/mvm/utils:: for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) */ 176 /* Would be so much easier if we'd define constants to the same. */ 177 enum ieee80211_ac_numbers { 178 IEEE80211_AC_VO = 0, /* net80211::WME_AC_VO */ 179 IEEE80211_AC_VI = 1, /* net80211::WME_AC_VI */ 180 IEEE80211_AC_BE = 2, /* net80211::WME_AC_BE */ 181 IEEE80211_AC_BK = 3, /* net80211::WME_AC_BK */ 182 }; 183 184 #define IEEE80211_MAX_QUEUES 16 /* Assume IEEE80211_NUM_TIDS for the moment. */ 185 186 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 1 187 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI 2 188 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4 189 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE 8 190 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 0xf 191 192 struct vht_mcs { 193 uint16_t rx_mcs_map; 194 uint16_t rx_highest; 195 uint16_t tx_mcs_map; 196 uint16_t tx_highest; 197 }; 198 199 struct ieee80211_vht_cap { 200 struct vht_mcs supp_mcs;; 201 __le32 vht_cap_info; 202 }; 203 204 enum ieee80211_ht_max_ampdu_len { 205 IEEE80211_HT_MAX_AMPDU_64K 206 }; 207 208 enum ieee80211_ampdu_mlme_action { 209 IEEE80211_AMPDU_RX_START, 210 IEEE80211_AMPDU_RX_STOP, 211 IEEE80211_AMPDU_TX_OPERATIONAL, 212 IEEE80211_AMPDU_TX_START, 213 IEEE80211_AMPDU_TX_START_DELAY_ADDBA, 214 IEEE80211_AMPDU_TX_START_IMMEDIATE, 215 IEEE80211_AMPDU_TX_STOP_CONT, 216 IEEE80211_AMPDU_TX_STOP_FLUSH, 217 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT 218 }; 219 220 enum ieee80211_chanctx_switch_mode { 221 CHANCTX_SWMODE_REASSIGN_VIF, 222 CHANCTX_SWMODE_SWAP_CONTEXTS, 223 }; 224 225 enum ieee80211_chanctx_change_flags { 226 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH = BIT(0), 227 IEEE80211_CHANCTX_CHANGE_RADAR = BIT(1), 228 IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(2), 229 IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(3), 230 }; 231 232 enum ieee80211_frame_release_type { 233 IEEE80211_FRAME_RELEASE_PSPOLL = 1, 234 IEEE80211_FRAME_RELEASE_UAPSD = 2, 235 }; 236 237 enum ieee80211_p2p_attr_ids { 238 IEEE80211_P2P_ATTR_DEVICE_ID, 239 IEEE80211_P2P_ATTR_DEVICE_INFO, 240 IEEE80211_P2P_ATTR_GROUP_ID, 241 IEEE80211_P2P_ATTR_LISTEN_CHANNEL, 242 }; 243 244 enum ieee80211_reconfig_type { 245 IEEE80211_RECONFIG_TYPE_RESTART, 246 IEEE80211_RECONFIG_TYPE_SUSPEND, 247 }; 248 249 enum ieee80211_roc_type { 250 IEEE80211_ROC_TYPE_MGMT_TX, 251 IEEE80211_ROC_TYPE_NORMAL, 252 }; 253 254 enum ieee80211_smps_mode { 255 IEEE80211_SMPS_OFF, 256 IEEE80211_SMPS_STATIC, 257 IEEE80211_SMPS_DYNAMIC, 258 IEEE80211_SMPS_AUTOMATIC, 259 IEEE80211_SMPS_NUM_MODES, 260 }; 261 262 /* net80211::IEEE80211_S_* different but represents the state machine. */ 263 /* Note: order here is important! */ 264 enum ieee80211_sta_state { 265 IEEE80211_STA_NOTEXIST, 266 IEEE80211_STA_NONE, 267 IEEE80211_STA_AUTH, 268 IEEE80211_STA_ASSOC, 269 IEEE80211_STA_AUTHORIZED, /* 802.1x */ 270 }; 271 272 enum ieee80211_sta_rx_bw { 273 IEEE80211_STA_RX_BW_20, 274 IEEE80211_STA_RX_BW_40, 275 IEEE80211_STA_RX_BW_80, 276 IEEE80211_STA_RX_BW_160, 277 }; 278 279 enum ieee80211_tx_info_flags { 280 /* XXX TODO .. right shift numbers - not sure where that came from? */ 281 IEEE80211_TX_CTL_AMPDU = BIT(0), 282 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 283 IEEE80211_TX_CTL_NO_ACK = BIT(2), 284 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(3), 285 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(4), 286 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(5), 287 IEEE80211_TX_STATUS_EOSP = BIT(6), 288 IEEE80211_TX_STAT_ACK = BIT(7), 289 IEEE80211_TX_STAT_AMPDU = BIT(8), 290 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(9), 291 IEEE80211_TX_STAT_TX_FILTERED = BIT(10), 292 IEEE80211_TX_STAT_NOACK_TRANSMITTED = BIT(11), 293 }; 294 295 enum ieee80211_tx_control_flags { 296 /* XXX TODO .. right shift numbers */ 297 IEEE80211_TX_CTRL_PORT_CTRL_PROTO = BIT(0), 298 }; 299 300 enum ieee80211_tx_rate_flags { 301 /* XXX TODO .. right shift numbers */ 302 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(0), 303 IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(1), 304 IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(2), 305 IEEE80211_TX_RC_GREEN_FIELD = BIT(3), 306 IEEE80211_TX_RC_MCS = BIT(4), 307 IEEE80211_TX_RC_SHORT_GI = BIT(5), 308 IEEE80211_TX_RC_VHT_MCS = BIT(6), 309 }; 310 311 struct ieee80211_hdr { /* net80211::ieee80211_frame */ 312 __le16 frame_control; 313 __le16 duration_id; 314 uint8_t addr1[ETH_ALEN]; 315 uint8_t addr2[ETH_ALEN]; 316 uint8_t addr3[ETH_ALEN]; 317 __le16 seq_ctrl; 318 uint8_t addr4[ETH_ALEN]; 319 }; 320 321 struct ieee80211_vendor_ie { 322 }; 323 324 /* 9.3.3.2 Format of Management frames */ 325 struct ieee80211_mgmt { 326 __le16 frame_control; 327 __le16 duration_id; 328 uint8_t da[ETH_ALEN]; 329 uint8_t sa[ETH_ALEN]; 330 uint8_t bssid[ETH_ALEN]; 331 __le16 seq_ctrl; 332 union { 333 /* 9.3.3.3 Beacon frame format */ 334 struct { 335 uint64_t timestamp; 336 uint16_t beacon_int; 337 uint16_t capab_info; 338 uint8_t variable[0]; 339 } beacon; 340 /* 9.3.3.10 Probe Request frame format */ 341 struct { 342 uint8_t variable[0]; 343 } probe_req; 344 /* 9.3.3.11 Probe Response frame format */ 345 struct { 346 uint64_t timestamp; 347 uint16_t beacon_int; 348 uint16_t capab_info; 349 uint8_t variable[0]; 350 } probe_resp; 351 /* 9.3.3.14 Action frame format */ 352 struct { 353 /* 9.4.1.11 Action field */ 354 uint8_t category; 355 /* 9.6.8 Public Action details */ 356 union { 357 /* 9.6.8.33 Fine Timing Measurement frame format */ 358 struct { 359 uint8_t dialog_token; 360 uint8_t follow_up; 361 uint8_t tod[6]; 362 uint8_t toa[6]; 363 uint16_t tod_error; 364 uint16_t toa_error; 365 uint8_t variable[0]; 366 } ftm; 367 } u; 368 } action; 369 } u; 370 }; 371 372 #define MHZ_TO_KHZ(_f) ((_f) * 1000) 373 #define DBI_TO_MBI(_g) ((_g) * 100) 374 #define MBI_TO_DBI(_x) ((_x) / 100) 375 #define DBM_TO_MBM(_g) ((_g) * 100) 376 #define MBM_TO_DBM(_x) ((_x) / 100) 377 378 #define IEEE80211_SEQ_TO_SN(_seqn) (((_seqn) & IEEE80211_SEQ_SEQ_MASK) >> \ 379 IEEE80211_SEQ_SEQ_SHIFT) 380 381 /* Time unit (TU) to .. See net80211: IEEE80211_DUR_TU */ 382 #define TU_TO_JIFFIES(_tu) (usecs_to_jiffies(_tu) * 1024) 383 #define TU_TO_EXP_TIME(_tu) (jiffies + TU_TO_JIFFIES(_tu)) 384 385 /* 9.4.2.21.1, Table 9-82. */ 386 #define IEEE80211_SPCT_MSR_RPRT_TYPE_LCI 8 387 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC 11 388 389 /* 9.4.2.1, Table 9-77. Element IDs. */ 390 enum ieee80211_eid { 391 WLAN_EID_SSID = 0, 392 WLAN_EID_SUPP_RATES = 1, 393 WLAN_EID_DS_PARAMS = 3, 394 WLAN_EID_TIM = 5, 395 WLAN_EID_COUNTRY = 7, /* IEEE80211_ELEMID_COUNTRY */ 396 WLAN_EID_REQUEST = 10, 397 WLAN_EID_CHANNEL_SWITCH = 37, 398 WLAN_EID_MEASURE_REPORT = 39, 399 WLAN_EID_RSN = 48, /* IEEE80211_ELEMID_RSN */ 400 WLAN_EID_EXT_SUPP_RATES = 50, 401 WLAN_EID_EXT_CHANSWITCH_ANN = 60, 402 WLAN_EID_EXT_CAPABILITY = 127, 403 WLAN_EID_VENDOR_SPECIFIC = 221, 404 }; 405 406 /* 9.4.1.7, Table 9-45. Reason codes. */ 407 enum ieee80211_reason_code { 408 /* reserved = 0, */ 409 WLAN_REASON_UNSPECIFIED = 1, 410 WLAN_REASON_DEAUTH_LEAVING = 3, /* LEAVING_NETWORK_DEAUTH */ 411 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED = 26, 412 }; 413 414 /* 9.4.1.9, Table 9-46. Status codes. */ 415 enum ieee80211_status_code { 416 WLAN_STATUS_SUCCESS = 0, 417 WLAN_STATUS_AUTH_TIMEOUT = 16, /* REJECTED_SEQUENCE_TIMEOUT */ 418 }; 419 420 /* net80211: IEEE80211_IS_CTL() */ 421 static __inline bool 422 ieee80211_is_ctl(__le16 fc) 423 { 424 __le16 v; 425 426 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 427 v = htole16(IEEE80211_FC0_TYPE_CTL); 428 429 return (fc == v); 430 } 431 432 /* net80211: IEEE80211_IS_DATA() */ 433 static __inline bool 434 ieee80211_is_data(__le16 fc) 435 { 436 __le16 v; 437 438 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 439 v = htole16(IEEE80211_FC0_TYPE_DATA); 440 441 return (fc == v); 442 } 443 444 /* net80211: IEEE80211_IS_QOSDATA() */ 445 static __inline bool 446 ieee80211_is_data_qos(__le16 fc) 447 { 448 __le16 v; 449 450 fc &= htole16(IEEE80211_FC0_SUBTYPE_QOS | IEEE80211_FC0_TYPE_MASK | 451 IEEE80211_FC0_VERSION_MASK); 452 v = htole16(IEEE80211_FC0_QOSDATA); 453 454 return (fc == v); 455 } 456 457 /* net80211: IEEE80211_IS_MGMT() */ 458 static __inline bool 459 ieee80211_is_mgmt(__le16 fc) 460 { 461 __le16 v; 462 463 fc &= htole16(IEEE80211_FC0_TYPE_MASK); 464 v = htole16(IEEE80211_FC0_TYPE_MGT); 465 466 return (fc == v); 467 } 468 469 470 /* Derived from net80211::ieee80211_anyhdrsize. */ 471 static __inline unsigned int 472 ieee80211_hdrlen(__le16 fc) 473 { 474 unsigned int size; 475 476 if (ieee80211_is_ctl(fc)) { 477 switch (fc & htole16(IEEE80211_FC0_SUBTYPE_MASK)) { 478 case htole16(IEEE80211_FC0_SUBTYPE_CTS): 479 case htole16(IEEE80211_FC0_SUBTYPE_ACK): 480 return sizeof(struct ieee80211_frame_ack); 481 case htole16(IEEE80211_FC0_SUBTYPE_BAR): 482 return sizeof(struct ieee80211_frame_bar); 483 } 484 return (sizeof(struct ieee80211_frame_min)); 485 } 486 487 size = sizeof(struct ieee80211_frame); 488 if (ieee80211_is_data(fc)) { 489 if ((fc & htole16(IEEE80211_FC1_DIR_MASK << 8)) == 490 htole16(IEEE80211_FC1_DIR_DSTODS << 8)) 491 size += IEEE80211_ADDR_LEN; 492 if ((fc & htole16(IEEE80211_FC0_SUBTYPE_QOS | 493 IEEE80211_FC0_TYPE_MASK)) == 494 htole16(IEEE80211_FC0_SUBTYPE_QOS | 495 IEEE80211_FC0_TYPE_DATA)) 496 size += sizeof(uint16_t); 497 } 498 499 if (ieee80211_is_mgmt(fc)) { 500 #ifdef __notyet__ 501 if (debug_80211 > 0) 502 printf("XXX-BZ %s: TODO? fc %#04x size %u\n", 503 __func__, fc, size); 504 #endif 505 ; 506 } 507 508 return (size); 509 } 510 511 #endif /* _LINUXKPI_LINUX_IEEE80211_H */ 512