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sys/net80211/ieee80211_node.h
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1 /* $OpenBSD: ieee80211_node.h,v 1.94 2022/03/20 12:01:58 stsp Exp $ */ 2 /* $NetBSD: ieee80211_node.h,v 1.9 2004/04/30 22:57:32 dyoung Exp $ */ 3 4 /*- 5 * Copyright (c) 2001 Atsushi Onoe 6 * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD: src/sys/net80211/ieee80211_node.h,v 1.10 2004/04/05 22:10:26 sam Exp $ 32 */ 33 #ifndef _NET80211_IEEE80211_NODE_H_ 34 #define _NET80211_IEEE80211_NODE_H_ 35 36 #include <sys/tree.h> 37 38 #define IEEE80211_PSCAN_WAIT 5 /* passive scan wait */ 39 #define IEEE80211_TRANS_WAIT 5 /* transition wait */ 40 #define IEEE80211_INACT_WAIT 5 /* inactivity timer interval */ 41 #define IEEE80211_INACT_MAX (300/IEEE80211_INACT_WAIT) 42 #define IEEE80211_CACHE_SIZE 512 43 #define IEEE80211_CACHE_WAIT 30 44 #define IEEE80211_INACT_SCAN 10 /* for station mode */ 45 46 struct ieee80211_rateset { 47 u_int8_t rs_nrates; 48 u_int8_t rs_rates[IEEE80211_RATE_MAXSIZE]; 49 }; 50 51 extern const struct ieee80211_rateset ieee80211_std_rateset_11a; 52 extern const struct ieee80211_rateset ieee80211_std_rateset_11b; 53 extern const struct ieee80211_rateset ieee80211_std_rateset_11g; 54 55 /* Index into ieee80211_std_rateset_11n[] array. */ 56 #define IEEE80211_HT_RATESET_SISO 0 57 #define IEEE80211_HT_RATESET_SISO_SGI 1 58 #define IEEE80211_HT_RATESET_MIMO2 2 59 #define IEEE80211_HT_RATESET_MIMO2_SGI 3 60 #define IEEE80211_HT_RATESET_MIMO3 4 61 #define IEEE80211_HT_RATESET_MIMO3_SGI 5 62 #define IEEE80211_HT_RATESET_MIMO4 6 63 #define IEEE80211_HT_RATESET_MIMO4_SGI 7 64 #define IEEE80211_HT_RATESET_SISO_40 8 65 #define IEEE80211_HT_RATESET_SISO_SGI40 9 66 #define IEEE80211_HT_RATESET_MIMO2_40 10 67 #define IEEE80211_HT_RATESET_MIMO2_SGI40 11 68 #define IEEE80211_HT_RATESET_MIMO3_40 12 69 #define IEEE80211_HT_RATESET_MIMO3_SGI40 13 70 #define IEEE80211_HT_RATESET_MIMO4_40 14 71 #define IEEE80211_HT_RATESET_MIMO4_SGI40 15 72 #define IEEE80211_HT_NUM_RATESETS 16 73 74 /* Maximum number of rates in a HT rateset. */ 75 #define IEEE80211_HT_RATESET_MAX_NRATES 8 76 77 /* Number of MCS indices represented by struct ieee80211_ht_rateset. */ 78 #define IEEE80211_HT_RATESET_NUM_MCS 32 79 80 struct ieee80211_ht_rateset { 81 uint32_t nrates; 82 uint32_t rates[IEEE80211_HT_RATESET_MAX_NRATES]; /* 500 kbit/s units */ 83 84 /* 85 * This bitmask can only express MCS 0 - MCS 31. 86 * IEEE 802.11 defined 77 HT MCS in total but common hardware 87 * implementations tend to support MCS index 0 through 31 only. 88 */ 89 uint32_t mcs_mask; 90 91 /* Range of MCS indices represented in this rateset. */ 92 int min_mcs; 93 int max_mcs; 94 95 int chan40; 96 int sgi; 97 }; 98 99 extern const struct ieee80211_ht_rateset ieee80211_std_ratesets_11n[]; 100 101 /* Index into ieee80211_std_rateset_11ac[] array. */ 102 #define IEEE80211_VHT_RATESET_SISO 0 103 #define IEEE80211_VHT_RATESET_SISO_SGI 1 104 #define IEEE80211_VHT_RATESET_MIMO2 2 105 #define IEEE80211_VHT_RATESET_MIMO2_SGI 3 106 #define IEEE80211_VHT_RATESET_SISO_40 4 107 #define IEEE80211_VHT_RATESET_SISO_40_SGI 5 108 #define IEEE80211_VHT_RATESET_MIMO2_40 6 109 #define IEEE80211_VHT_RATESET_MIMO2_40_SGI 7 110 #define IEEE80211_VHT_RATESET_SISO_80 8 111 #define IEEE80211_VHT_RATESET_SISO_80_SGI 9 112 #define IEEE80211_VHT_RATESET_MIMO2_80 10 113 #define IEEE80211_VHT_RATESET_MIMO2_80_SGI 11 114 #define IEEE80211_VHT_NUM_RATESETS 12 115 116 /* Maximum number of rates in a VHT rateset. */ 117 #define IEEE80211_VHT_RATESET_MAX_NRATES 10 118 119 struct ieee80211_vht_rateset { 120 int idx; /* This rateset's index in ieee80211_std_rateset_11ac[]. */ 121 122 uint32_t nrates; 123 uint32_t rates[IEEE80211_VHT_RATESET_MAX_NRATES]; /* 500 kbit/s units */ 124 125 /* Number of spatial streams used by rates in this rateset. */ 126 int num_ss; 127 128 int chan40; 129 int chan80; 130 int sgi; 131 }; 132 133 extern const struct ieee80211_vht_rateset ieee80211_std_ratesets_11ac[]; 134 135 enum ieee80211_node_state { 136 IEEE80211_STA_CACHE, /* cached node */ 137 IEEE80211_STA_BSS, /* ic->ic_bss, the network we joined */ 138 IEEE80211_STA_AUTH, /* successfully authenticated */ 139 IEEE80211_STA_ASSOC, /* successfully associated */ 140 IEEE80211_STA_COLLECT /* This node remains in the cache while 141 * the driver sends a de-auth message; 142 * afterward it should be freed to make room 143 * for a new node. 144 */ 145 }; 146 147 #define ieee80211_node_newstate(__ni, __state) \ 148 do { \ 149 (__ni)->ni_state = (__state); \ 150 } while (0) 151 152 enum ieee80211_node_psstate { 153 IEEE80211_PS_AWAKE, 154 IEEE80211_PS_DOZE 155 }; 156 157 #define IEEE80211_PS_MAX_QUEUE 50 /* maximum saved packets */ 158 159 /* Authenticator state machine: 4-Way Handshake (see 8.5.6.1.1) */ 160 enum { 161 RSNA_INITIALIZE, 162 RSNA_AUTHENTICATION, 163 RSNA_AUTHENTICATION_2, 164 RSNA_INITPMK, 165 RSNA_INITPSK, 166 RSNA_PTKSTART, 167 RSNA_PTKCALCNEGOTIATING, 168 RSNA_PTKCALCNEGOTIATING_2, 169 RSNA_PTKINITNEGOTIATING, 170 RSNA_PTKINITDONE, 171 RSNA_DISCONNECT, 172 RSNA_DISCONNECTED 173 }; 174 175 /* Authenticator state machine: Group Key Handshake (see 8.5.6.1.2) */ 176 enum { 177 RSNA_IDLE, 178 RSNA_REKEYNEGOTIATING, 179 RSNA_REKEYESTABLISHED, 180 RSNA_KEYERROR 181 }; 182 183 /* Supplicant state machine: 4-Way Handshake (not documented in standard) */ 184 enum { 185 RSNA_SUPP_INITIALIZE, /* not expecting any messages */ 186 RSNA_SUPP_PTKSTART, /* awaiting handshake message 1 */ 187 RSNA_SUPP_PTKNEGOTIATING, /* got message 1 and derived PTK */ 188 RSNA_SUPP_PTKDONE /* got message 3 and authenticated AP */ 189 }; 190 191 struct ieee80211_rxinfo { 192 u_int32_t rxi_flags; 193 u_int32_t rxi_tstamp; 194 int rxi_rssi; 195 uint8_t rxi_chan; 196 }; 197 #define IEEE80211_RXI_HWDEC 0x00000001 198 #define IEEE80211_RXI_AMPDU_DONE 0x00000002 199 #define IEEE80211_RXI_HWDEC_SAME_PN 0x00000004 200 #define IEEE80211_RXI_SAME_SEQ 0x00000008 201 202 /* Block Acknowledgement Record */ 203 struct ieee80211_tx_ba { 204 struct ieee80211_node *ba_ni; /* backpointer for callbacks */ 205 struct timeout ba_to; 206 int ba_timeout_val; 207 int ba_state; 208 #define IEEE80211_BA_INIT 0 209 #define IEEE80211_BA_REQUESTED 1 210 #define IEEE80211_BA_AGREED 2 211 212 /* ADDBA parameter set field for this BA agreement. */ 213 u_int16_t ba_params; 214 215 /* These values are IEEE802.11 frame sequence numbers (0x0-0xfff) */ 216 u_int16_t ba_winstart; 217 u_int16_t ba_winend; 218 219 /* Number of A-MPDU subframes in reorder buffer. */ 220 u_int16_t ba_winsize; 221 #define IEEE80211_BA_MAX_WINSZ 64 /* corresponds to maximum ADDBA BUFSZ */ 222 223 u_int8_t ba_token; 224 225 /* Bitmap for ACK'd frames in the current BA window. */ 226 uint64_t ba_bitmap; 227 }; 228 229 struct ieee80211_rx_ba { 230 struct ieee80211_node *ba_ni; /* backpointer for callbacks */ 231 struct { 232 struct mbuf *m; 233 struct ieee80211_rxinfo rxi; 234 } *ba_buf; 235 struct timeout ba_to; 236 int ba_timeout_val; 237 int ba_state; 238 u_int16_t ba_params; 239 u_int16_t ba_winstart; 240 u_int16_t ba_winend; 241 u_int16_t ba_winsize; 242 u_int16_t ba_head; 243 struct timeout ba_gap_to; 244 #define IEEE80211_BA_GAP_TIMEOUT 300 /* msec */ 245 246 /* 247 * Counter for frames forced to wait in the reordering buffer 248 * due to a leading gap caused by one or more missing frames. 249 */ 250 int ba_gapwait; 251 252 /* Counter for consecutive frames which missed the BA window. */ 253 int ba_winmiss; 254 /* Sequence number of previous frame which missed the BA window. */ 255 uint16_t ba_missedsn; 256 /* Window moves forward after this many frames have missed it. */ 257 #define IEEE80211_BA_MAX_WINMISS 8 258 259 uint8_t ba_token; 260 }; 261 262 /* 263 * Node specific information. Note that drivers are expected 264 * to derive from this structure to add device-specific per-node 265 * state. This is done by overriding the ic_node_* methods in 266 * the ieee80211com structure. 267 */ 268 struct ieee80211_node { 269 RBT_ENTRY(ieee80211_node) ni_node; 270 271 struct ieee80211com *ni_ic; /* back-pointer */ 272 273 u_int ni_refcnt; 274 u_int ni_scangen; /* gen# for timeout scan */ 275 276 /* hardware */ 277 u_int32_t ni_rstamp; /* recv timestamp */ 278 u_int8_t ni_rssi; /* recv ssi */ 279 280 /* header */ 281 u_int8_t ni_macaddr[IEEE80211_ADDR_LEN]; 282 u_int8_t ni_bssid[IEEE80211_ADDR_LEN]; 283 284 /* beacon, probe response */ 285 u_int8_t ni_tstamp[8]; /* from last rcv'd beacon */ 286 u_int16_t ni_intval; /* beacon interval */ 287 u_int16_t ni_capinfo; /* capabilities */ 288 u_int8_t ni_esslen; 289 u_int8_t ni_essid[IEEE80211_NWID_LEN]; 290 struct ieee80211_rateset ni_rates; /* negotiated rate set */ 291 u_int8_t *ni_country; /* country information XXX */ 292 struct ieee80211_channel *ni_chan; 293 u_int8_t ni_erp; /* 11g only */ 294 295 /* DTIM and contention free period (CFP) */ 296 u_int8_t ni_dtimcount; 297 u_int8_t ni_dtimperiod; 298 #ifdef notyet 299 u_int8_t ni_cfpperiod; /* # of DTIMs between CFPs */ 300 u_int16_t ni_cfpduremain; /* remaining cfp duration */ 301 u_int16_t ni_cfpmaxduration;/* max CFP duration in TU */ 302 u_int16_t ni_nextdtim; /* time to next DTIM */ 303 u_int16_t ni_timoffset; 304 #endif 305 306 /* power saving mode */ 307 u_int8_t ni_pwrsave; 308 struct mbuf_queue ni_savedq; /* packets queued for pspoll */ 309 310 /* RSN */ 311 struct timeout ni_eapol_to; 312 u_int ni_rsn_state; 313 u_int ni_rsn_supp_state; 314 u_int ni_rsn_gstate; 315 u_int ni_rsn_retries; 316 u_int ni_supported_rsnprotos; 317 u_int ni_rsnprotos; 318 u_int ni_supported_rsnakms; 319 u_int ni_rsnakms; 320 u_int ni_rsnciphers; 321 enum ieee80211_cipher ni_rsngroupcipher; 322 enum ieee80211_cipher ni_rsngroupmgmtcipher; 323 u_int16_t ni_rsncaps; 324 enum ieee80211_cipher ni_rsncipher; 325 u_int8_t ni_nonce[EAPOL_KEY_NONCE_LEN]; 326 u_int8_t ni_pmk[IEEE80211_PMK_LEN]; 327 u_int8_t ni_pmkid[IEEE80211_PMKID_LEN]; 328 u_int64_t ni_replaycnt; 329 u_int8_t ni_replaycnt_ok; 330 u_int64_t ni_reqreplaycnt; 331 u_int8_t ni_reqreplaycnt_ok; 332 u_int8_t *ni_rsnie; 333 struct ieee80211_key ni_pairwise_key; 334 struct ieee80211_ptk ni_ptk; 335 u_int8_t ni_key_count; 336 int ni_port_valid; 337 338 /* SA Query */ 339 u_int16_t ni_sa_query_trid; 340 struct timeout ni_sa_query_to; 341 int ni_sa_query_count; 342 343 /* HT capabilities */ 344 uint16_t ni_htcaps; 345 uint8_t ni_ampdu_param; 346 uint8_t ni_rxmcs[howmany(80,NBBY)]; 347 uint16_t ni_max_rxrate; /* in Mb/s, 0 <= rate <= 1023 */ 348 uint8_t ni_tx_mcs_set; 349 uint16_t ni_htxcaps; 350 uint32_t ni_txbfcaps; 351 uint8_t ni_aselcaps; 352 353 /* HT operation */ 354 uint8_t ni_primary_chan; /* XXX corresponds to ni_chan */ 355 uint8_t ni_htop0; 356 uint16_t ni_htop1; 357 uint16_t ni_htop2; 358 uint8_t ni_basic_mcs[howmany(128,NBBY)]; 359 360 /* VHT capabilities */ 361 uint32_t ni_vhtcaps; 362 uint16_t ni_vht_rxmcs; 363 uint16_t ni_vht_rx_max_lgi_mbit_s; 364 uint16_t ni_vht_txmcs; 365 uint16_t ni_vht_tx_max_lgi_mbit_s; 366 367 /* VHT operation */ 368 uint8_t ni_vht_chan_width; 369 uint8_t ni_vht_chan_center_freq_idx0; 370 uint8_t ni_vht_chan_center_freq_idx1; 371 uint16_t ni_vht_basic_mcs; 372 373 /* Timeout handlers which trigger Tx Block Ack negotiation. */ 374 struct timeout ni_addba_req_to[IEEE80211_NUM_TID]; 375 int ni_addba_req_intval[IEEE80211_NUM_TID]; 376 #define IEEE80211_ADDBA_REQ_INTVAL_MAX 30 /* in seconds */ 377 378 /* Block Ack records */ 379 struct ieee80211_tx_ba ni_tx_ba[IEEE80211_NUM_TID]; 380 struct ieee80211_rx_ba ni_rx_ba[IEEE80211_NUM_TID]; 381 382 int ni_txmcs; /* current MCS used for TX */ 383 int ni_vht_ss; /* VHT # spatial streams */ 384 385 /* others */ 386 u_int16_t ni_associd; /* assoc response */ 387 u_int16_t ni_txseq; /* seq to be transmitted */ 388 u_int16_t ni_rxseq; /* seq previous received */ 389 u_int16_t ni_qos_txseqs[IEEE80211_NUM_TID]; 390 u_int16_t ni_qos_rxseqs[IEEE80211_NUM_TID]; 391 int ni_fails; /* failure count to associate */ 392 uint32_t ni_assoc_fail; /* assoc failure reasons */ 393 #define IEEE80211_NODE_ASSOCFAIL_CHAN 0x01 394 #define IEEE80211_NODE_ASSOCFAIL_IBSS 0x02 395 #define IEEE80211_NODE_ASSOCFAIL_PRIVACY 0x04 396 #define IEEE80211_NODE_ASSOCFAIL_BASIC_RATE 0x08 397 #define IEEE80211_NODE_ASSOCFAIL_ESSID 0x10 398 #define IEEE80211_NODE_ASSOCFAIL_BSSID 0x20 399 #define IEEE80211_NODE_ASSOCFAIL_WPA_PROTO 0x40 400 #define IEEE80211_NODE_ASSOCFAIL_WPA_KEY 0x80 401 402 int ni_inact; /* inactivity mark count */ 403 int ni_txrate; /* index to ni_rates[] */ 404 int ni_state; 405 406 u_int32_t ni_flags; /* special-purpose state */ 407 #define IEEE80211_NODE_ERP 0x0001 408 #define IEEE80211_NODE_QOS 0x0002 409 #define IEEE80211_NODE_REKEY 0x0004 /* GTK rekeying in progress */ 410 #define IEEE80211_NODE_RXPROT 0x0008 /* RX protection ON */ 411 #define IEEE80211_NODE_TXPROT 0x0010 /* TX protection ON */ 412 #define IEEE80211_NODE_TXRXPROT \ 413 (IEEE80211_NODE_TXPROT | IEEE80211_NODE_RXPROT) 414 #define IEEE80211_NODE_RXMGMTPROT 0x0020 /* RX MMPDU protection ON */ 415 #define IEEE80211_NODE_TXMGMTPROT 0x0040 /* TX MMPDU protection ON */ 416 #define IEEE80211_NODE_MFP 0x0080 /* MFP negotiated */ 417 #define IEEE80211_NODE_PMK 0x0100 /* ni_pmk set */ 418 #define IEEE80211_NODE_PMKID 0x0200 /* ni_pmkid set */ 419 #define IEEE80211_NODE_HT 0x0400 /* HT negotiated */ 420 #define IEEE80211_NODE_SA_QUERY 0x0800 /* SA Query in progress */ 421 #define IEEE80211_NODE_SA_QUERY_FAILED 0x1000 /* last SA Query failed */ 422 #define IEEE80211_NODE_RSN_NEW_PTK 0x2000 /* expecting a new PTK */ 423 #define IEEE80211_NODE_HT_SGI20 0x4000 /* SGI on 20 MHz negotiated */ 424 #define IEEE80211_NODE_HT_SGI40 0x8000 /* SGI on 40 MHz negotiated */ 425 #define IEEE80211_NODE_VHT 0x10000 /* VHT negotiated */ 426 #define IEEE80211_NODE_HTCAP 0x20000 /* claims to support HT */ 427 #define IEEE80211_NODE_VHTCAP 0x40000 /* claims to support VHT */ 428 #define IEEE80211_NODE_VHT_SGI80 0x80000 /* SGI on 80 MHz negotiated */ 429 #define IEEE80211_NODE_VHT_SGI160 0x100000 /* SGI on 160 MHz negotiated */ 430 431 /* If not NULL, this function gets called when ni_refcnt hits zero. */ 432 void (*ni_unref_cb)(struct ieee80211com *, 433 struct ieee80211_node *); 434 void * ni_unref_arg; 435 size_t ni_unref_arg_size; 436 }; 437 438 RBT_HEAD(ieee80211_tree, ieee80211_node); 439 440 struct ieee80211_ess_rbt { 441 RBT_ENTRY(ieee80211_ess_rbt) ess_rbt; 442 u_int8_t esslen; 443 u_int8_t essid[IEEE80211_NWID_LEN]; 444 struct ieee80211_node *ni2; 445 struct ieee80211_node *ni5; 446 struct ieee80211_node *ni; 447 }; 448 449 RBT_HEAD(ieee80211_ess_tree, ieee80211_ess_rbt); 450 451 static inline void 452 ieee80211_node_incref(struct ieee80211_node *ni) 453 { 454 int s; 455 456 s = splnet(); 457 ni->ni_refcnt++; 458 splx(s); 459 } 460 461 static inline u_int 462 ieee80211_node_decref(struct ieee80211_node *ni) 463 { 464 u_int refcnt; 465 int s; 466 467 s = splnet(); 468 refcnt = --ni->ni_refcnt; 469 splx(s); 470 return refcnt; 471 } 472 473 static inline struct ieee80211_node * 474 ieee80211_ref_node(struct ieee80211_node *ni) 475 { 476 ieee80211_node_incref(ni); 477 return ni; 478 } 479 480 static inline void 481 ieee80211_unref_node(struct ieee80211_node **ni) 482 { 483 ieee80211_node_decref(*ni); 484 *ni = NULL; /* guard against use */ 485 } 486 487 /* 488 * Check if the peer supports HT. 489 * Require a HT capabilities IE and at least one of the mandatory MCS. 490 * MCS 0-7 are mandatory but some APs have particular MCS disabled. 491 */ 492 static inline int 493 ieee80211_node_supports_ht(struct ieee80211_node *ni) 494 { 495 return ((ni->ni_flags & IEEE80211_NODE_HTCAP) && 496 ni->ni_rxmcs[0] & 0xff); 497 } 498 499 /* Check if the peer supports HT short guard interval (SGI) on 20 MHz. */ 500 static inline int 501 ieee80211_node_supports_ht_sgi20(struct ieee80211_node *ni) 502 { 503 return ieee80211_node_supports_ht(ni) && 504 (ni->ni_htcaps & IEEE80211_HTCAP_SGI20); 505 } 506 507 /* Check if the peer supports HT short guard interval (SGI) on 40 MHz. */ 508 static inline int 509 ieee80211_node_supports_ht_sgi40(struct ieee80211_node *ni) 510 { 511 return ieee80211_node_supports_ht(ni) && 512 (ni->ni_htcaps & IEEE80211_HTCAP_SGI40); 513 } 514 515 /* Check if the peer can receive frames sent on a 40 MHz channel. */ 516 static inline int 517 ieee80211_node_supports_ht_chan40(struct ieee80211_node *ni) 518 { 519 return (ieee80211_node_supports_ht(ni) && 520 (ni->ni_htcaps & IEEE80211_HTCAP_CBW20_40) && 521 (ni->ni_htop0 & IEEE80211_HTOP0_CHW)); 522 } 523 524 /* 525 * Check if the peer supports VHT. 526 * Require a VHT capabilities IE and support for VHT MCS with a single 527 * spatial stream. 528 */ 529 static inline int 530 ieee80211_node_supports_vht(struct ieee80211_node *ni) 531 { 532 uint16_t rx_mcs; 533 534 rx_mcs = (ni->ni_vht_rxmcs & IEEE80211_VHT_MCS_FOR_SS_MASK(1)) >> 535 IEEE80211_VHT_MCS_FOR_SS_SHIFT(1); 536 537 return ((ni->ni_flags & IEEE80211_NODE_VHTCAP) && 538 rx_mcs != IEEE80211_VHT_MCS_SS_NOT_SUPP); 539 } 540 541 /* Check if the peer supports VHT short guard interval (SGI) on 80 MHz. */ 542 static inline int 543 ieee80211_node_supports_vht_sgi80(struct ieee80211_node *ni) 544 { 545 return ieee80211_node_supports_vht(ni) && 546 (ni->ni_vhtcaps & IEEE80211_VHTCAP_SGI80); 547 } 548 549 /* Check if the peer supports VHT short guard interval (SGI) on 160 MHz. */ 550 static inline int 551 ieee80211_node_supports_vht_sgi160(struct ieee80211_node *ni) 552 { 553 return ieee80211_node_supports_vht(ni) && 554 (ni->ni_vhtcaps & IEEE80211_VHTCAP_SGI160); 555 } 556 557 /* Check if the peer can receive frames sent on an 80 MHz channel. */ 558 static inline int 559 ieee80211_node_supports_vht_chan80(struct ieee80211_node *ni) 560 { 561 uint8_t cap_chan_width, op_chan_width; 562 563 if (!ieee80211_node_supports_vht(ni)) 564 return 0; 565 566 cap_chan_width = (ni->ni_vhtcaps & IEEE80211_VHTCAP_CHAN_WIDTH_MASK) >> 567 IEEE80211_VHTCAP_CHAN_WIDTH_SHIFT; 568 if (cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_80 && 569 cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160 && 570 cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160_8080) 571 return 0; 572 573 op_chan_width = (ni->ni_vht_chan_width & 574 IEEE80211_VHTOP0_CHAN_WIDTH_MASK) >> 575 IEEE80211_VHTOP0_CHAN_WIDTH_SHIFT; 576 577 return (op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_80 || 578 op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_160 || 579 op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_8080); 580 } 581 582 /* Check if the peer can receive frames sent on a 160 MHz channel. */ 583 static inline int 584 ieee80211_node_supports_vht_chan160(struct ieee80211_node *ni) 585 { 586 uint8_t cap_chan_width, op_chan_width; 587 588 if (!ieee80211_node_supports_vht(ni)) 589 return 0; 590 591 cap_chan_width = (ni->ni_vhtcaps & IEEE80211_VHTCAP_CHAN_WIDTH_MASK) >> 592 IEEE80211_VHTCAP_CHAN_WIDTH_SHIFT; 593 if (cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160) 594 return 0; 595 596 op_chan_width = (ni->ni_vht_chan_width & 597 IEEE80211_VHTOP0_CHAN_WIDTH_MASK) >> 598 IEEE80211_VHTOP0_CHAN_WIDTH_SHIFT; 599 600 return (op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_160); 601 } 602 603 struct ieee80211com; 604 605 typedef void ieee80211_iter_func(void *, struct ieee80211_node *); 606 607 void ieee80211_node_attach(struct ifnet *); 608 void ieee80211_node_lateattach(struct ifnet *); 609 void ieee80211_node_detach(struct ifnet *); 610 611 void ieee80211_begin_scan(struct ifnet *); 612 void ieee80211_next_scan(struct ifnet *); 613 void ieee80211_end_scan(struct ifnet *); 614 void ieee80211_reset_scan(struct ifnet *); 615 struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *, 616 const u_int8_t *); 617 struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *, 618 const u_int8_t *); 619 struct ieee80211_node *ieee80211_find_node(struct ieee80211com *, 620 const u_int8_t *); 621 void ieee80211_node_tx_ba_clear(struct ieee80211_node *, int); 622 void ieee80211_ba_del(struct ieee80211_node *); 623 struct ieee80211_node *ieee80211_find_rxnode(struct ieee80211com *, 624 const struct ieee80211_frame *); 625 struct ieee80211_node *ieee80211_find_txnode(struct ieee80211com *, 626 const u_int8_t *); 627 void ieee80211_release_node(struct ieee80211com *, 628 struct ieee80211_node *); 629 void ieee80211_node_cleanup(struct ieee80211com *, struct ieee80211_node *); 630 void ieee80211_free_allnodes(struct ieee80211com *, int); 631 void ieee80211_iterate_nodes(struct ieee80211com *, 632 ieee80211_iter_func *, void *); 633 void ieee80211_clean_cached(struct ieee80211com *); 634 void ieee80211_clean_nodes(struct ieee80211com *, int); 635 void ieee80211_setup_htcaps(struct ieee80211_node *, const uint8_t *, 636 uint8_t); 637 void ieee80211_clear_htcaps(struct ieee80211_node *); 638 int ieee80211_setup_htop(struct ieee80211_node *, const uint8_t *, 639 uint8_t, int); 640 void ieee80211_setup_vhtcaps(struct ieee80211_node *, const uint8_t *, 641 uint8_t); 642 void ieee80211_clear_vhtcaps(struct ieee80211_node *); 643 int ieee80211_setup_vhtop(struct ieee80211_node *, const uint8_t *, 644 uint8_t, int); 645 int ieee80211_setup_rates(struct ieee80211com *, 646 struct ieee80211_node *, const u_int8_t *, const u_int8_t *, int); 647 void ieee80211_node_trigger_addba_req(struct ieee80211_node *, int); 648 int ieee80211_iserp_sta(const struct ieee80211_node *); 649 void ieee80211_count_longslotsta(void *, struct ieee80211_node *); 650 void ieee80211_count_nonerpsta(void *, struct ieee80211_node *); 651 void ieee80211_count_pssta(void *, struct ieee80211_node *); 652 void ieee80211_count_rekeysta(void *, struct ieee80211_node *); 653 void ieee80211_node_join(struct ieee80211com *, 654 struct ieee80211_node *, int); 655 void ieee80211_node_leave(struct ieee80211com *, 656 struct ieee80211_node *); 657 int ieee80211_match_bss(struct ieee80211com *, struct ieee80211_node *, int); 658 void ieee80211_node_tx_stopped(struct ieee80211com *, struct ieee80211_node *); 659 struct ieee80211_node *ieee80211_node_choose_bss(struct ieee80211com *, int, 660 struct ieee80211_node **); 661 void ieee80211_node_join_bss(struct ieee80211com *, struct ieee80211_node *); 662 void ieee80211_create_ibss(struct ieee80211com* , 663 struct ieee80211_channel *); 664 void ieee80211_notify_dtim(struct ieee80211com *); 665 void ieee80211_set_tim(struct ieee80211com *, int, int); 666 void ieee80211_free_node(struct ieee80211com *, struct ieee80211_node *); 667 668 int ieee80211_node_cmp(const struct ieee80211_node *, 669 const struct ieee80211_node *); 670 int ieee80211_ess_cmp(const struct ieee80211_ess_rbt *, 671 const struct ieee80211_ess_rbt *); 672 RBT_PROTOTYPE(ieee80211_tree, ieee80211_node, ni_node, ieee80211_node_cmp); 673 RBT_PROTOTYPE(ieee80211_ess_tree, ieee80211_ess_rbt, ess_rbt, ieee80211_ess_cmp); 674 675 #endif /* _NET80211_IEEE80211_NODE_H_ */
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