1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2001 Atsushi Onoe 5 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * IEEE 802.11 generic handler 34 */ 35 #include "opt_wlan.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/malloc.h> 41 #include <sys/socket.h> 42 #include <sys/sbuf.h> 43 44 #include <machine/stdarg.h> 45 46 #include <net/if.h> 47 #include <net/if_var.h> 48 #include <net/if_dl.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 #include <net/ethernet.h> 52 53 #include <net80211/ieee80211_var.h> 54 #include <net80211/ieee80211_regdomain.h> 55 #ifdef IEEE80211_SUPPORT_SUPERG 56 #include <net80211/ieee80211_superg.h> 57 #endif 58 #include <net80211/ieee80211_ratectl.h> 59 #include <net80211/ieee80211_vht.h> 60 61 #include <net/bpf.h> 62 63 const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = { 64 [IEEE80211_MODE_AUTO] = "auto", 65 [IEEE80211_MODE_11A] = "11a", 66 [IEEE80211_MODE_11B] = "11b", 67 [IEEE80211_MODE_11G] = "11g", 68 [IEEE80211_MODE_FH] = "FH", 69 [IEEE80211_MODE_TURBO_A] = "turboA", 70 [IEEE80211_MODE_TURBO_G] = "turboG", 71 [IEEE80211_MODE_STURBO_A] = "sturboA", 72 [IEEE80211_MODE_HALF] = "half", 73 [IEEE80211_MODE_QUARTER] = "quarter", 74 [IEEE80211_MODE_11NA] = "11na", 75 [IEEE80211_MODE_11NG] = "11ng", 76 [IEEE80211_MODE_VHT_2GHZ] = "11acg", 77 [IEEE80211_MODE_VHT_5GHZ] = "11ac", 78 }; 79 /* map ieee80211_opmode to the corresponding capability bit */ 80 const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = { 81 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS, 82 [IEEE80211_M_WDS] = IEEE80211_C_WDS, 83 [IEEE80211_M_STA] = IEEE80211_C_STA, 84 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO, 85 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP, 86 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR, 87 #ifdef IEEE80211_SUPPORT_MESH 88 [IEEE80211_M_MBSS] = IEEE80211_C_MBSS, 89 #endif 90 }; 91 92 const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] = 93 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 94 95 static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag); 96 static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag); 97 static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag); 98 static void ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag); 99 static int ieee80211_media_setup(struct ieee80211com *ic, 100 struct ifmedia *media, int caps, int addsta, 101 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat); 102 static int media_status(enum ieee80211_opmode, 103 const struct ieee80211_channel *); 104 static uint64_t ieee80211_get_counter(struct ifnet *, ift_counter); 105 106 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state"); 107 108 /* 109 * Default supported rates for 802.11 operation (in IEEE .5Mb units). 110 */ 111 #define B(r) ((r) | IEEE80211_RATE_BASIC) 112 static const struct ieee80211_rateset ieee80211_rateset_11a = 113 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } }; 114 static const struct ieee80211_rateset ieee80211_rateset_half = 115 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } }; 116 static const struct ieee80211_rateset ieee80211_rateset_quarter = 117 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } }; 118 static const struct ieee80211_rateset ieee80211_rateset_11b = 119 { 4, { B(2), B(4), B(11), B(22) } }; 120 /* NB: OFDM rates are handled specially based on mode */ 121 static const struct ieee80211_rateset ieee80211_rateset_11g = 122 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } }; 123 #undef B 124 125 static int set_vht_extchan(struct ieee80211_channel *c); 126 127 /* 128 * Fill in 802.11 available channel set, mark 129 * all available channels as active, and pick 130 * a default channel if not already specified. 131 */ 132 void 133 ieee80211_chan_init(struct ieee80211com *ic) 134 { 135 #define DEFAULTRATES(m, def) do { \ 136 if (ic->ic_sup_rates[m].rs_nrates == 0) \ 137 ic->ic_sup_rates[m] = def; \ 138 } while (0) 139 struct ieee80211_channel *c; 140 int i; 141 142 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX, 143 ("invalid number of channels specified: %u", ic->ic_nchans)); 144 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 145 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps)); 146 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO); 147 for (i = 0; i < ic->ic_nchans; i++) { 148 c = &ic->ic_channels[i]; 149 KASSERT(c->ic_flags != 0, ("channel with no flags")); 150 /* 151 * Help drivers that work only with frequencies by filling 152 * in IEEE channel #'s if not already calculated. Note this 153 * mimics similar work done in ieee80211_setregdomain when 154 * changing regulatory state. 155 */ 156 if (c->ic_ieee == 0) 157 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags); 158 159 /* 160 * Setup the HT40/VHT40 upper/lower bits. 161 * The VHT80 math is done elsewhere. 162 */ 163 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0) 164 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq + 165 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20), 166 c->ic_flags); 167 168 /* Update VHT math */ 169 /* 170 * XXX VHT again, note that this assumes VHT80 channels 171 * are legit already 172 */ 173 set_vht_extchan(c); 174 175 /* default max tx power to max regulatory */ 176 if (c->ic_maxpower == 0) 177 c->ic_maxpower = 2*c->ic_maxregpower; 178 setbit(ic->ic_chan_avail, c->ic_ieee); 179 /* 180 * Identify mode capabilities. 181 */ 182 if (IEEE80211_IS_CHAN_A(c)) 183 setbit(ic->ic_modecaps, IEEE80211_MODE_11A); 184 if (IEEE80211_IS_CHAN_B(c)) 185 setbit(ic->ic_modecaps, IEEE80211_MODE_11B); 186 if (IEEE80211_IS_CHAN_ANYG(c)) 187 setbit(ic->ic_modecaps, IEEE80211_MODE_11G); 188 if (IEEE80211_IS_CHAN_FHSS(c)) 189 setbit(ic->ic_modecaps, IEEE80211_MODE_FH); 190 if (IEEE80211_IS_CHAN_108A(c)) 191 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A); 192 if (IEEE80211_IS_CHAN_108G(c)) 193 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G); 194 if (IEEE80211_IS_CHAN_ST(c)) 195 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A); 196 if (IEEE80211_IS_CHAN_HALF(c)) 197 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF); 198 if (IEEE80211_IS_CHAN_QUARTER(c)) 199 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER); 200 if (IEEE80211_IS_CHAN_HTA(c)) 201 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA); 202 if (IEEE80211_IS_CHAN_HTG(c)) 203 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG); 204 if (IEEE80211_IS_CHAN_VHTA(c)) 205 setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_5GHZ); 206 if (IEEE80211_IS_CHAN_VHTG(c)) 207 setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_2GHZ); 208 } 209 /* initialize candidate channels to all available */ 210 memcpy(ic->ic_chan_active, ic->ic_chan_avail, 211 sizeof(ic->ic_chan_avail)); 212 213 /* sort channel table to allow lookup optimizations */ 214 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 215 216 /* invalidate any previous state */ 217 ic->ic_bsschan = IEEE80211_CHAN_ANYC; 218 ic->ic_prevchan = NULL; 219 ic->ic_csa_newchan = NULL; 220 /* arbitrarily pick the first channel */ 221 ic->ic_curchan = &ic->ic_channels[0]; 222 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 223 224 /* fillin well-known rate sets if driver has not specified */ 225 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b); 226 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g); 227 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a); 228 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a); 229 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g); 230 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a); 231 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half); 232 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter); 233 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a); 234 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g); 235 DEFAULTRATES(IEEE80211_MODE_VHT_2GHZ, ieee80211_rateset_11g); 236 DEFAULTRATES(IEEE80211_MODE_VHT_5GHZ, ieee80211_rateset_11a); 237 238 /* 239 * Setup required information to fill the mcsset field, if driver did 240 * not. Assume a 2T2R setup for historic reasons. 241 */ 242 if (ic->ic_rxstream == 0) 243 ic->ic_rxstream = 2; 244 if (ic->ic_txstream == 0) 245 ic->ic_txstream = 2; 246 247 ieee80211_init_suphtrates(ic); 248 249 /* 250 * Set auto mode to reset active channel state and any desired channel. 251 */ 252 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO); 253 #undef DEFAULTRATES 254 } 255 256 static void 257 null_update_mcast(struct ieee80211com *ic) 258 { 259 260 ic_printf(ic, "need multicast update callback\n"); 261 } 262 263 static void 264 null_update_promisc(struct ieee80211com *ic) 265 { 266 267 ic_printf(ic, "need promiscuous mode update callback\n"); 268 } 269 270 static void 271 null_update_chw(struct ieee80211com *ic) 272 { 273 274 ic_printf(ic, "%s: need callback\n", __func__); 275 } 276 277 int 278 ic_printf(struct ieee80211com *ic, const char * fmt, ...) 279 { 280 va_list ap; 281 int retval; 282 283 retval = printf("%s: ", ic->ic_name); 284 va_start(ap, fmt); 285 retval += vprintf(fmt, ap); 286 va_end(ap); 287 return (retval); 288 } 289 290 static LIST_HEAD(, ieee80211com) ic_head = LIST_HEAD_INITIALIZER(ic_head); 291 static struct mtx ic_list_mtx; 292 MTX_SYSINIT(ic_list, &ic_list_mtx, "ieee80211com list", MTX_DEF); 293 294 static int 295 sysctl_ieee80211coms(SYSCTL_HANDLER_ARGS) 296 { 297 struct ieee80211com *ic; 298 struct sbuf sb; 299 char *sp; 300 int error; 301 302 error = sysctl_wire_old_buffer(req, 0); 303 if (error) 304 return (error); 305 sbuf_new_for_sysctl(&sb, NULL, 8, req); 306 sbuf_clear_flags(&sb, SBUF_INCLUDENUL); 307 sp = ""; 308 mtx_lock(&ic_list_mtx); 309 LIST_FOREACH(ic, &ic_head, ic_next) { 310 sbuf_printf(&sb, "%s%s", sp, ic->ic_name); 311 sp = " "; 312 } 313 mtx_unlock(&ic_list_mtx); 314 error = sbuf_finish(&sb); 315 sbuf_delete(&sb); 316 return (error); 317 } 318 319 SYSCTL_PROC(_net_wlan, OID_AUTO, devices, 320 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, 321 sysctl_ieee80211coms, "A", "names of available 802.11 devices"); 322 323 /* 324 * Attach/setup the common net80211 state. Called by 325 * the driver on attach to prior to creating any vap's. 326 */ 327 void 328 ieee80211_ifattach(struct ieee80211com *ic) 329 { 330 331 IEEE80211_LOCK_INIT(ic, ic->ic_name); 332 IEEE80211_TX_LOCK_INIT(ic, ic->ic_name); 333 TAILQ_INIT(&ic->ic_vaps); 334 335 /* Create a taskqueue for all state changes */ 336 ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO, 337 taskqueue_thread_enqueue, &ic->ic_tq); 338 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq", 339 ic->ic_name); 340 ic->ic_ierrors = counter_u64_alloc(M_WAITOK); 341 ic->ic_oerrors = counter_u64_alloc(M_WAITOK); 342 /* 343 * Fill in 802.11 available channel set, mark all 344 * available channels as active, and pick a default 345 * channel if not already specified. 346 */ 347 ieee80211_chan_init(ic); 348 349 ic->ic_update_mcast = null_update_mcast; 350 ic->ic_update_promisc = null_update_promisc; 351 ic->ic_update_chw = null_update_chw; 352 353 ic->ic_hash_key = arc4random(); 354 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 355 ic->ic_lintval = ic->ic_bintval; 356 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 357 358 ieee80211_crypto_attach(ic); 359 ieee80211_node_attach(ic); 360 ieee80211_power_attach(ic); 361 ieee80211_proto_attach(ic); 362 #ifdef IEEE80211_SUPPORT_SUPERG 363 ieee80211_superg_attach(ic); 364 #endif 365 ieee80211_ht_attach(ic); 366 ieee80211_vht_attach(ic); 367 ieee80211_scan_attach(ic); 368 ieee80211_regdomain_attach(ic); 369 ieee80211_dfs_attach(ic); 370 371 ieee80211_sysctl_attach(ic); 372 373 mtx_lock(&ic_list_mtx); 374 LIST_INSERT_HEAD(&ic_head, ic, ic_next); 375 mtx_unlock(&ic_list_mtx); 376 } 377 378 /* 379 * Detach net80211 state on device detach. Tear down 380 * all vap's and reclaim all common state prior to the 381 * device state going away. Note we may call back into 382 * driver; it must be prepared for this. 383 */ 384 void 385 ieee80211_ifdetach(struct ieee80211com *ic) 386 { 387 struct ieee80211vap *vap; 388 389 /* 390 * We use this as an indicator that ifattach never had a chance to be 391 * called, e.g. early driver attach failed and ifdetach was called 392 * during subsequent detach. Never fear, for we have nothing to do 393 * here. 394 */ 395 if (ic->ic_tq == NULL) 396 return; 397 398 mtx_lock(&ic_list_mtx); 399 LIST_REMOVE(ic, ic_next); 400 mtx_unlock(&ic_list_mtx); 401 402 taskqueue_drain(taskqueue_thread, &ic->ic_restart_task); 403 404 /* 405 * The VAP is responsible for setting and clearing 406 * the VIMAGE context. 407 */ 408 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) { 409 ieee80211_com_vdetach(vap); 410 ieee80211_vap_destroy(vap); 411 } 412 ieee80211_waitfor_parent(ic); 413 414 ieee80211_sysctl_detach(ic); 415 ieee80211_dfs_detach(ic); 416 ieee80211_regdomain_detach(ic); 417 ieee80211_scan_detach(ic); 418 #ifdef IEEE80211_SUPPORT_SUPERG 419 ieee80211_superg_detach(ic); 420 #endif 421 ieee80211_vht_detach(ic); 422 ieee80211_ht_detach(ic); 423 /* NB: must be called before ieee80211_node_detach */ 424 ieee80211_proto_detach(ic); 425 ieee80211_crypto_detach(ic); 426 ieee80211_power_detach(ic); 427 ieee80211_node_detach(ic); 428 429 counter_u64_free(ic->ic_ierrors); 430 counter_u64_free(ic->ic_oerrors); 431 432 taskqueue_free(ic->ic_tq); 433 IEEE80211_TX_LOCK_DESTROY(ic); 434 IEEE80211_LOCK_DESTROY(ic); 435 } 436 437 struct ieee80211com * 438 ieee80211_find_com(const char *name) 439 { 440 struct ieee80211com *ic; 441 442 mtx_lock(&ic_list_mtx); 443 LIST_FOREACH(ic, &ic_head, ic_next) 444 if (strcmp(ic->ic_name, name) == 0) 445 break; 446 mtx_unlock(&ic_list_mtx); 447 448 return (ic); 449 } 450 451 void 452 ieee80211_iterate_coms(ieee80211_com_iter_func *f, void *arg) 453 { 454 struct ieee80211com *ic; 455 456 mtx_lock(&ic_list_mtx); 457 LIST_FOREACH(ic, &ic_head, ic_next) 458 (*f)(arg, ic); 459 mtx_unlock(&ic_list_mtx); 460 } 461 462 /* 463 * Default reset method for use with the ioctl support. This 464 * method is invoked after any state change in the 802.11 465 * layer that should be propagated to the hardware but not 466 * require re-initialization of the 802.11 state machine (e.g 467 * rescanning for an ap). We always return ENETRESET which 468 * should cause the driver to re-initialize the device. Drivers 469 * can override this method to implement more optimized support. 470 */ 471 static int 472 default_reset(struct ieee80211vap *vap, u_long cmd) 473 { 474 return ENETRESET; 475 } 476 477 /* 478 * Default for updating the VAP default TX key index. 479 * 480 * Drivers that support TX offload as well as hardware encryption offload 481 * may need to be informed of key index changes separate from the key 482 * update. 483 */ 484 static void 485 default_update_deftxkey(struct ieee80211vap *vap, ieee80211_keyix kid) 486 { 487 488 /* XXX assert validity */ 489 /* XXX assert we're in a key update block */ 490 vap->iv_def_txkey = kid; 491 } 492 493 /* 494 * Add underlying device errors to vap errors. 495 */ 496 static uint64_t 497 ieee80211_get_counter(struct ifnet *ifp, ift_counter cnt) 498 { 499 struct ieee80211vap *vap = ifp->if_softc; 500 struct ieee80211com *ic = vap->iv_ic; 501 uint64_t rv; 502 503 rv = if_get_counter_default(ifp, cnt); 504 switch (cnt) { 505 case IFCOUNTER_OERRORS: 506 rv += counter_u64_fetch(ic->ic_oerrors); 507 break; 508 case IFCOUNTER_IERRORS: 509 rv += counter_u64_fetch(ic->ic_ierrors); 510 break; 511 default: 512 break; 513 } 514 515 return (rv); 516 } 517 518 /* 519 * Prepare a vap for use. Drivers use this call to 520 * setup net80211 state in new vap's prior attaching 521 * them with ieee80211_vap_attach (below). 522 */ 523 int 524 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, 525 const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, 526 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN]) 527 { 528 struct ifnet *ifp; 529 530 ifp = if_alloc(IFT_ETHER); 531 if (ifp == NULL) { 532 ic_printf(ic, "%s: unable to allocate ifnet\n", __func__); 533 return ENOMEM; 534 } 535 if_initname(ifp, name, unit); 536 ifp->if_softc = vap; /* back pointer */ 537 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 538 ifp->if_transmit = ieee80211_vap_transmit; 539 ifp->if_qflush = ieee80211_vap_qflush; 540 ifp->if_ioctl = ieee80211_ioctl; 541 ifp->if_init = ieee80211_init; 542 ifp->if_get_counter = ieee80211_get_counter; 543 544 vap->iv_ifp = ifp; 545 vap->iv_ic = ic; 546 vap->iv_flags = ic->ic_flags; /* propagate common flags */ 547 vap->iv_flags_ext = ic->ic_flags_ext; 548 vap->iv_flags_ven = ic->ic_flags_ven; 549 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 550 551 /* 11n capabilities - XXX methodize */ 552 vap->iv_htcaps = ic->ic_htcaps; 553 vap->iv_htextcaps = ic->ic_htextcaps; 554 555 /* 11ac capabilities - XXX methodize */ 556 vap->iv_vhtcaps = ic->ic_vhtcaps; 557 vap->iv_vhtextcaps = ic->ic_vhtextcaps; 558 559 vap->iv_opmode = opmode; 560 vap->iv_caps |= ieee80211_opcap[opmode]; 561 IEEE80211_ADDR_COPY(vap->iv_myaddr, ic->ic_macaddr); 562 switch (opmode) { 563 case IEEE80211_M_WDS: 564 /* 565 * WDS links must specify the bssid of the far end. 566 * For legacy operation this is a static relationship. 567 * For non-legacy operation the station must associate 568 * and be authorized to pass traffic. Plumbing the 569 * vap to the proper node happens when the vap 570 * transitions to RUN state. 571 */ 572 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 573 vap->iv_flags |= IEEE80211_F_DESBSSID; 574 if (flags & IEEE80211_CLONE_WDSLEGACY) 575 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 576 break; 577 #ifdef IEEE80211_SUPPORT_TDMA 578 case IEEE80211_M_AHDEMO: 579 if (flags & IEEE80211_CLONE_TDMA) { 580 /* NB: checked before clone operation allowed */ 581 KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 582 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 583 /* 584 * Propagate TDMA capability to mark vap; this 585 * cannot be removed and is used to distinguish 586 * regular ahdemo operation from ahdemo+tdma. 587 */ 588 vap->iv_caps |= IEEE80211_C_TDMA; 589 } 590 break; 591 #endif 592 default: 593 break; 594 } 595 /* auto-enable s/w beacon miss support */ 596 if (flags & IEEE80211_CLONE_NOBEACONS) 597 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 598 /* auto-generated or user supplied MAC address */ 599 if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR)) 600 vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC; 601 /* 602 * Enable various functionality by default if we're 603 * capable; the driver can override us if it knows better. 604 */ 605 if (vap->iv_caps & IEEE80211_C_WME) 606 vap->iv_flags |= IEEE80211_F_WME; 607 if (vap->iv_caps & IEEE80211_C_BURST) 608 vap->iv_flags |= IEEE80211_F_BURST; 609 /* NB: bg scanning only makes sense for station mode right now */ 610 if (vap->iv_opmode == IEEE80211_M_STA && 611 (vap->iv_caps & IEEE80211_C_BGSCAN)) 612 vap->iv_flags |= IEEE80211_F_BGSCAN; 613 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 614 /* NB: DFS support only makes sense for ap mode right now */ 615 if (vap->iv_opmode == IEEE80211_M_HOSTAP && 616 (vap->iv_caps & IEEE80211_C_DFS)) 617 vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 618 /* NB: only flip on U-APSD for hostap/sta for now */ 619 if ((vap->iv_opmode == IEEE80211_M_STA) 620 || (vap->iv_opmode == IEEE80211_M_HOSTAP)) { 621 if (vap->iv_caps & IEEE80211_C_UAPSD) 622 vap->iv_flags_ext |= IEEE80211_FEXT_UAPSD; 623 } 624 625 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 626 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 627 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 628 /* 629 * Install a default reset method for the ioctl support; 630 * the driver can override this. 631 */ 632 vap->iv_reset = default_reset; 633 634 /* 635 * Install a default crypto key update method, the driver 636 * can override this. 637 */ 638 vap->iv_update_deftxkey = default_update_deftxkey; 639 640 ieee80211_sysctl_vattach(vap); 641 ieee80211_crypto_vattach(vap); 642 ieee80211_node_vattach(vap); 643 ieee80211_power_vattach(vap); 644 ieee80211_proto_vattach(vap); 645 #ifdef IEEE80211_SUPPORT_SUPERG 646 ieee80211_superg_vattach(vap); 647 #endif 648 ieee80211_ht_vattach(vap); 649 ieee80211_vht_vattach(vap); 650 ieee80211_scan_vattach(vap); 651 ieee80211_regdomain_vattach(vap); 652 ieee80211_radiotap_vattach(vap); 653 ieee80211_vap_reset_erp(vap); 654 ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE); 655 656 return 0; 657 } 658 659 /* 660 * Activate a vap. State should have been prepared with a 661 * call to ieee80211_vap_setup and by the driver. On return 662 * from this call the vap is ready for use. 663 */ 664 int 665 ieee80211_vap_attach(struct ieee80211vap *vap, ifm_change_cb_t media_change, 666 ifm_stat_cb_t media_stat, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 667 { 668 struct ifnet *ifp = vap->iv_ifp; 669 struct ieee80211com *ic = vap->iv_ic; 670 struct ifmediareq imr; 671 int maxrate; 672 673 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 674 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 675 __func__, ieee80211_opmode_name[vap->iv_opmode], 676 ic->ic_name, vap->iv_flags, vap->iv_flags_ext); 677 678 /* 679 * Do late attach work that cannot happen until after 680 * the driver has had a chance to override defaults. 681 */ 682 ieee80211_node_latevattach(vap); 683 ieee80211_power_latevattach(vap); 684 685 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 686 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 687 ieee80211_media_status(ifp, &imr); 688 /* NB: strip explicit mode; we're actually in autoselect */ 689 ifmedia_set(&vap->iv_media, 690 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 691 if (maxrate) 692 ifp->if_baudrate = IF_Mbps(maxrate); 693 694 ether_ifattach(ifp, macaddr); 695 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); 696 /* hook output method setup by ether_ifattach */ 697 vap->iv_output = ifp->if_output; 698 ifp->if_output = ieee80211_output; 699 /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 700 701 IEEE80211_LOCK(ic); 702 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 703 ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 704 #ifdef IEEE80211_SUPPORT_SUPERG 705 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 706 #endif 707 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 708 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 709 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 710 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 711 712 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT); 713 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40); 714 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80); 715 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80); 716 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160); 717 IEEE80211_UNLOCK(ic); 718 719 return 1; 720 } 721 722 /* 723 * Tear down vap state and reclaim the ifnet. 724 * The driver is assumed to have prepared for 725 * this; e.g. by turning off interrupts for the 726 * underlying device. 727 */ 728 void 729 ieee80211_vap_detach(struct ieee80211vap *vap) 730 { 731 struct ieee80211com *ic = vap->iv_ic; 732 struct ifnet *ifp = vap->iv_ifp; 733 734 CURVNET_SET(ifp->if_vnet); 735 736 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 737 __func__, ieee80211_opmode_name[vap->iv_opmode], ic->ic_name); 738 739 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 740 ether_ifdetach(ifp); 741 742 ieee80211_stop(vap); 743 744 /* 745 * Flush any deferred vap tasks. 746 */ 747 ieee80211_draintask(ic, &vap->iv_nstate_task); 748 ieee80211_draintask(ic, &vap->iv_swbmiss_task); 749 ieee80211_draintask(ic, &vap->iv_wme_task); 750 ieee80211_draintask(ic, &ic->ic_parent_task); 751 752 /* XXX band-aid until ifnet handles this for us */ 753 taskqueue_drain(taskqueue_swi, &ifp->if_linktask); 754 755 IEEE80211_LOCK(ic); 756 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 757 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 758 ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 759 #ifdef IEEE80211_SUPPORT_SUPERG 760 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 761 #endif 762 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 763 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 764 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 765 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 766 767 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT); 768 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40); 769 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80); 770 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80); 771 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160); 772 773 /* NB: this handles the bpfdetach done below */ 774 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 775 if (vap->iv_ifflags & IFF_PROMISC) 776 ieee80211_promisc(vap, false); 777 if (vap->iv_ifflags & IFF_ALLMULTI) 778 ieee80211_allmulti(vap, false); 779 IEEE80211_UNLOCK(ic); 780 781 ifmedia_removeall(&vap->iv_media); 782 783 ieee80211_radiotap_vdetach(vap); 784 ieee80211_regdomain_vdetach(vap); 785 ieee80211_scan_vdetach(vap); 786 #ifdef IEEE80211_SUPPORT_SUPERG 787 ieee80211_superg_vdetach(vap); 788 #endif 789 ieee80211_vht_vdetach(vap); 790 ieee80211_ht_vdetach(vap); 791 /* NB: must be before ieee80211_node_vdetach */ 792 ieee80211_proto_vdetach(vap); 793 ieee80211_crypto_vdetach(vap); 794 ieee80211_power_vdetach(vap); 795 ieee80211_node_vdetach(vap); 796 ieee80211_sysctl_vdetach(vap); 797 798 if_free(ifp); 799 800 CURVNET_RESTORE(); 801 } 802 803 /* 804 * Count number of vaps in promisc, and issue promisc on 805 * parent respectively. 806 */ 807 void 808 ieee80211_promisc(struct ieee80211vap *vap, bool on) 809 { 810 struct ieee80211com *ic = vap->iv_ic; 811 812 IEEE80211_LOCK_ASSERT(ic); 813 814 if (on) { 815 if (++ic->ic_promisc == 1) 816 ieee80211_runtask(ic, &ic->ic_promisc_task); 817 } else { 818 KASSERT(ic->ic_promisc > 0, ("%s: ic %p not promisc", 819 __func__, ic)); 820 if (--ic->ic_promisc == 0) 821 ieee80211_runtask(ic, &ic->ic_promisc_task); 822 } 823 } 824 825 /* 826 * Count number of vaps in allmulti, and issue allmulti on 827 * parent respectively. 828 */ 829 void 830 ieee80211_allmulti(struct ieee80211vap *vap, bool on) 831 { 832 struct ieee80211com *ic = vap->iv_ic; 833 834 IEEE80211_LOCK_ASSERT(ic); 835 836 if (on) { 837 if (++ic->ic_allmulti == 1) 838 ieee80211_runtask(ic, &ic->ic_mcast_task); 839 } else { 840 KASSERT(ic->ic_allmulti > 0, ("%s: ic %p not allmulti", 841 __func__, ic)); 842 if (--ic->ic_allmulti == 0) 843 ieee80211_runtask(ic, &ic->ic_mcast_task); 844 } 845 } 846 847 /* 848 * Synchronize flag bit state in the com structure 849 * according to the state of all vap's. This is used, 850 * for example, to handle state changes via ioctls. 851 */ 852 static void 853 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 854 { 855 struct ieee80211vap *vap; 856 int bit; 857 858 IEEE80211_LOCK_ASSERT(ic); 859 860 bit = 0; 861 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 862 if (vap->iv_flags & flag) { 863 bit = 1; 864 break; 865 } 866 if (bit) 867 ic->ic_flags |= flag; 868 else 869 ic->ic_flags &= ~flag; 870 } 871 872 void 873 ieee80211_syncflag(struct ieee80211vap *vap, int flag) 874 { 875 struct ieee80211com *ic = vap->iv_ic; 876 877 IEEE80211_LOCK(ic); 878 if (flag < 0) { 879 flag = -flag; 880 vap->iv_flags &= ~flag; 881 } else 882 vap->iv_flags |= flag; 883 ieee80211_syncflag_locked(ic, flag); 884 IEEE80211_UNLOCK(ic); 885 } 886 887 /* 888 * Synchronize flags_ht bit state in the com structure 889 * according to the state of all vap's. This is used, 890 * for example, to handle state changes via ioctls. 891 */ 892 static void 893 ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 894 { 895 struct ieee80211vap *vap; 896 int bit; 897 898 IEEE80211_LOCK_ASSERT(ic); 899 900 bit = 0; 901 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 902 if (vap->iv_flags_ht & flag) { 903 bit = 1; 904 break; 905 } 906 if (bit) 907 ic->ic_flags_ht |= flag; 908 else 909 ic->ic_flags_ht &= ~flag; 910 } 911 912 void 913 ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 914 { 915 struct ieee80211com *ic = vap->iv_ic; 916 917 IEEE80211_LOCK(ic); 918 if (flag < 0) { 919 flag = -flag; 920 vap->iv_flags_ht &= ~flag; 921 } else 922 vap->iv_flags_ht |= flag; 923 ieee80211_syncflag_ht_locked(ic, flag); 924 IEEE80211_UNLOCK(ic); 925 } 926 927 /* 928 * Synchronize flags_vht bit state in the com structure 929 * according to the state of all vap's. This is used, 930 * for example, to handle state changes via ioctls. 931 */ 932 static void 933 ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag) 934 { 935 struct ieee80211vap *vap; 936 int bit; 937 938 IEEE80211_LOCK_ASSERT(ic); 939 940 bit = 0; 941 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 942 if (vap->iv_flags_vht & flag) { 943 bit = 1; 944 break; 945 } 946 if (bit) 947 ic->ic_flags_vht |= flag; 948 else 949 ic->ic_flags_vht &= ~flag; 950 } 951 952 void 953 ieee80211_syncflag_vht(struct ieee80211vap *vap, int flag) 954 { 955 struct ieee80211com *ic = vap->iv_ic; 956 957 IEEE80211_LOCK(ic); 958 if (flag < 0) { 959 flag = -flag; 960 vap->iv_flags_vht &= ~flag; 961 } else 962 vap->iv_flags_vht |= flag; 963 ieee80211_syncflag_vht_locked(ic, flag); 964 IEEE80211_UNLOCK(ic); 965 } 966 967 /* 968 * Synchronize flags_ext bit state in the com structure 969 * according to the state of all vap's. This is used, 970 * for example, to handle state changes via ioctls. 971 */ 972 static void 973 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 974 { 975 struct ieee80211vap *vap; 976 int bit; 977 978 IEEE80211_LOCK_ASSERT(ic); 979 980 bit = 0; 981 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 982 if (vap->iv_flags_ext & flag) { 983 bit = 1; 984 break; 985 } 986 if (bit) 987 ic->ic_flags_ext |= flag; 988 else 989 ic->ic_flags_ext &= ~flag; 990 } 991 992 void 993 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 994 { 995 struct ieee80211com *ic = vap->iv_ic; 996 997 IEEE80211_LOCK(ic); 998 if (flag < 0) { 999 flag = -flag; 1000 vap->iv_flags_ext &= ~flag; 1001 } else 1002 vap->iv_flags_ext |= flag; 1003 ieee80211_syncflag_ext_locked(ic, flag); 1004 IEEE80211_UNLOCK(ic); 1005 } 1006 1007 static __inline int 1008 mapgsm(u_int freq, u_int flags) 1009 { 1010 freq *= 10; 1011 if (flags & IEEE80211_CHAN_QUARTER) 1012 freq += 5; 1013 else if (flags & IEEE80211_CHAN_HALF) 1014 freq += 10; 1015 else 1016 freq += 20; 1017 /* NB: there is no 907/20 wide but leave room */ 1018 return (freq - 906*10) / 5; 1019 } 1020 1021 static __inline int 1022 mappsb(u_int freq, u_int flags) 1023 { 1024 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 1025 } 1026 1027 /* 1028 * Convert MHz frequency to IEEE channel number. 1029 */ 1030 int 1031 ieee80211_mhz2ieee(u_int freq, u_int flags) 1032 { 1033 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 1034 if (flags & IEEE80211_CHAN_GSM) 1035 return mapgsm(freq, flags); 1036 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 1037 if (freq == 2484) 1038 return 14; 1039 if (freq < 2484) 1040 return ((int) freq - 2407) / 5; 1041 else 1042 return 15 + ((freq - 2512) / 20); 1043 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 1044 if (freq <= 5000) { 1045 /* XXX check regdomain? */ 1046 if (IS_FREQ_IN_PSB(freq)) 1047 return mappsb(freq, flags); 1048 return (freq - 4000) / 5; 1049 } else 1050 return (freq - 5000) / 5; 1051 } else { /* either, guess */ 1052 if (freq == 2484) 1053 return 14; 1054 if (freq < 2484) { 1055 if (907 <= freq && freq <= 922) 1056 return mapgsm(freq, flags); 1057 return ((int) freq - 2407) / 5; 1058 } 1059 if (freq < 5000) { 1060 if (IS_FREQ_IN_PSB(freq)) 1061 return mappsb(freq, flags); 1062 else if (freq > 4900) 1063 return (freq - 4000) / 5; 1064 else 1065 return 15 + ((freq - 2512) / 20); 1066 } 1067 return (freq - 5000) / 5; 1068 } 1069 #undef IS_FREQ_IN_PSB 1070 } 1071 1072 /* 1073 * Convert channel to IEEE channel number. 1074 */ 1075 int 1076 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 1077 { 1078 if (c == NULL) { 1079 ic_printf(ic, "invalid channel (NULL)\n"); 1080 return 0; /* XXX */ 1081 } 1082 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 1083 } 1084 1085 /* 1086 * Convert IEEE channel number to MHz frequency. 1087 */ 1088 u_int 1089 ieee80211_ieee2mhz(u_int chan, u_int flags) 1090 { 1091 if (flags & IEEE80211_CHAN_GSM) 1092 return 907 + 5 * (chan / 10); 1093 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 1094 if (chan == 14) 1095 return 2484; 1096 if (chan < 14) 1097 return 2407 + chan*5; 1098 else 1099 return 2512 + ((chan-15)*20); 1100 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 1101 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 1102 chan -= 37; 1103 return 4940 + chan*5 + (chan % 5 ? 2 : 0); 1104 } 1105 return 5000 + (chan*5); 1106 } else { /* either, guess */ 1107 /* XXX can't distinguish PSB+GSM channels */ 1108 if (chan == 14) 1109 return 2484; 1110 if (chan < 14) /* 0-13 */ 1111 return 2407 + chan*5; 1112 if (chan < 27) /* 15-26 */ 1113 return 2512 + ((chan-15)*20); 1114 return 5000 + (chan*5); 1115 } 1116 } 1117 1118 static __inline void 1119 set_extchan(struct ieee80211_channel *c) 1120 { 1121 1122 /* 1123 * IEEE Std 802.11-2012, page 1738, subclause 20.3.15.4: 1124 * "the secondary channel number shall be 'N + [1,-1] * 4' 1125 */ 1126 if (c->ic_flags & IEEE80211_CHAN_HT40U) 1127 c->ic_extieee = c->ic_ieee + 4; 1128 else if (c->ic_flags & IEEE80211_CHAN_HT40D) 1129 c->ic_extieee = c->ic_ieee - 4; 1130 else 1131 c->ic_extieee = 0; 1132 } 1133 1134 /* 1135 * Populate the freq1/freq2 fields as appropriate for VHT channels. 1136 * 1137 * This for now uses a hard-coded list of 80MHz wide channels. 1138 * 1139 * For HT20/HT40, freq1 just is the centre frequency of the 40MHz 1140 * wide channel we've already decided upon. 1141 * 1142 * For VHT80 and VHT160, there are only a small number of fixed 1143 * 80/160MHz wide channels, so we just use those. 1144 * 1145 * This is all likely very very wrong - both the regulatory code 1146 * and this code needs to ensure that all four channels are 1147 * available and valid before the VHT80 (and eight for VHT160) channel 1148 * is created. 1149 */ 1150 1151 struct vht_chan_range { 1152 uint16_t freq_start; 1153 uint16_t freq_end; 1154 }; 1155 1156 struct vht_chan_range vht80_chan_ranges[] = { 1157 { 5170, 5250 }, 1158 { 5250, 5330 }, 1159 { 5490, 5570 }, 1160 { 5570, 5650 }, 1161 { 5650, 5730 }, 1162 { 5735, 5815 }, 1163 { 0, 0, } 1164 }; 1165 1166 static int 1167 set_vht_extchan(struct ieee80211_channel *c) 1168 { 1169 int i; 1170 1171 if (! IEEE80211_IS_CHAN_VHT(c)) { 1172 return (0); 1173 } 1174 1175 if (IEEE80211_IS_CHAN_VHT20(c)) { 1176 c->ic_vht_ch_freq1 = c->ic_ieee; 1177 return (1); 1178 } 1179 1180 if (IEEE80211_IS_CHAN_VHT40(c)) { 1181 if (IEEE80211_IS_CHAN_HT40U(c)) 1182 c->ic_vht_ch_freq1 = c->ic_ieee + 2; 1183 else if (IEEE80211_IS_CHAN_HT40D(c)) 1184 c->ic_vht_ch_freq1 = c->ic_ieee - 2; 1185 else 1186 return (0); 1187 return (1); 1188 } 1189 1190 if (IEEE80211_IS_CHAN_VHT80(c)) { 1191 for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) { 1192 if (c->ic_freq >= vht80_chan_ranges[i].freq_start && 1193 c->ic_freq < vht80_chan_ranges[i].freq_end) { 1194 int midpoint; 1195 1196 midpoint = vht80_chan_ranges[i].freq_start + 40; 1197 c->ic_vht_ch_freq1 = 1198 ieee80211_mhz2ieee(midpoint, c->ic_flags); 1199 c->ic_vht_ch_freq2 = 0; 1200 #if 0 1201 printf("%s: %d, freq=%d, midpoint=%d, freq1=%d, freq2=%d\n", 1202 __func__, c->ic_ieee, c->ic_freq, midpoint, 1203 c->ic_vht_ch_freq1, c->ic_vht_ch_freq2); 1204 #endif 1205 return (1); 1206 } 1207 } 1208 return (0); 1209 } 1210 1211 printf("%s: unknown VHT channel type (ieee=%d, flags=0x%08x)\n", 1212 __func__, c->ic_ieee, c->ic_flags); 1213 1214 return (0); 1215 } 1216 1217 /* 1218 * Return whether the current channel could possibly be a part of 1219 * a VHT80 channel. 1220 * 1221 * This doesn't check that the whole range is in the allowed list 1222 * according to regulatory. 1223 */ 1224 static int 1225 is_vht80_valid_freq(uint16_t freq) 1226 { 1227 int i; 1228 for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) { 1229 if (freq >= vht80_chan_ranges[i].freq_start && 1230 freq < vht80_chan_ranges[i].freq_end) 1231 return (1); 1232 } 1233 return (0); 1234 } 1235 1236 static int 1237 addchan(struct ieee80211_channel chans[], int maxchans, int *nchans, 1238 uint8_t ieee, uint16_t freq, int8_t maxregpower, uint32_t flags) 1239 { 1240 struct ieee80211_channel *c; 1241 1242 if (*nchans >= maxchans) 1243 return (ENOBUFS); 1244 1245 #if 0 1246 printf("%s: %d: ieee=%d, freq=%d, flags=0x%08x\n", 1247 __func__, *nchans, ieee, freq, flags); 1248 #endif 1249 1250 c = &chans[(*nchans)++]; 1251 c->ic_ieee = ieee; 1252 c->ic_freq = freq != 0 ? freq : ieee80211_ieee2mhz(ieee, flags); 1253 c->ic_maxregpower = maxregpower; 1254 c->ic_maxpower = 2 * maxregpower; 1255 c->ic_flags = flags; 1256 c->ic_vht_ch_freq1 = 0; 1257 c->ic_vht_ch_freq2 = 0; 1258 set_extchan(c); 1259 set_vht_extchan(c); 1260 1261 return (0); 1262 } 1263 1264 static int 1265 copychan_prev(struct ieee80211_channel chans[], int maxchans, int *nchans, 1266 uint32_t flags) 1267 { 1268 struct ieee80211_channel *c; 1269 1270 KASSERT(*nchans > 0, ("channel list is empty\n")); 1271 1272 if (*nchans >= maxchans) 1273 return (ENOBUFS); 1274 1275 #if 0 1276 printf("%s: %d: flags=0x%08x\n", 1277 __func__, *nchans, flags); 1278 #endif 1279 1280 c = &chans[(*nchans)++]; 1281 c[0] = c[-1]; 1282 c->ic_flags = flags; 1283 c->ic_vht_ch_freq1 = 0; 1284 c->ic_vht_ch_freq2 = 0; 1285 set_extchan(c); 1286 set_vht_extchan(c); 1287 1288 return (0); 1289 } 1290 1291 /* 1292 * XXX VHT-2GHz 1293 */ 1294 static void 1295 getflags_2ghz(const uint8_t bands[], uint32_t flags[], int ht40) 1296 { 1297 int nmodes; 1298 1299 nmodes = 0; 1300 if (isset(bands, IEEE80211_MODE_11B)) 1301 flags[nmodes++] = IEEE80211_CHAN_B; 1302 if (isset(bands, IEEE80211_MODE_11G)) 1303 flags[nmodes++] = IEEE80211_CHAN_G; 1304 if (isset(bands, IEEE80211_MODE_11NG)) 1305 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT20; 1306 if (ht40) { 1307 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40U; 1308 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40D; 1309 } 1310 flags[nmodes] = 0; 1311 } 1312 1313 static void 1314 getflags_5ghz(const uint8_t bands[], uint32_t flags[], int ht40, int vht80) 1315 { 1316 int nmodes; 1317 1318 /* 1319 * the addchan_list function seems to expect the flags array to 1320 * be in channel width order, so the VHT bits are interspersed 1321 * as appropriate to maintain said order. 1322 * 1323 * It also assumes HT40U is before HT40D. 1324 */ 1325 nmodes = 0; 1326 1327 /* 20MHz */ 1328 if (isset(bands, IEEE80211_MODE_11A)) 1329 flags[nmodes++] = IEEE80211_CHAN_A; 1330 if (isset(bands, IEEE80211_MODE_11NA)) 1331 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20; 1332 if (isset(bands, IEEE80211_MODE_VHT_5GHZ)) { 1333 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20 | 1334 IEEE80211_CHAN_VHT20; 1335 } 1336 1337 /* 40MHz */ 1338 if (ht40) { 1339 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U; 1340 } 1341 if (ht40 && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { 1342 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U 1343 | IEEE80211_CHAN_VHT40U; 1344 } 1345 if (ht40) { 1346 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D; 1347 } 1348 if (ht40 && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { 1349 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D 1350 | IEEE80211_CHAN_VHT40D; 1351 } 1352 1353 /* 80MHz */ 1354 if (vht80 && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { 1355 flags[nmodes++] = IEEE80211_CHAN_A | 1356 IEEE80211_CHAN_HT40U | IEEE80211_CHAN_VHT80; 1357 flags[nmodes++] = IEEE80211_CHAN_A | 1358 IEEE80211_CHAN_HT40D | IEEE80211_CHAN_VHT80; 1359 } 1360 1361 /* XXX VHT160 */ 1362 /* XXX VHT80+80 */ 1363 flags[nmodes] = 0; 1364 } 1365 1366 static void 1367 getflags(const uint8_t bands[], uint32_t flags[], int ht40, int vht80) 1368 { 1369 1370 flags[0] = 0; 1371 if (isset(bands, IEEE80211_MODE_11A) || 1372 isset(bands, IEEE80211_MODE_11NA) || 1373 isset(bands, IEEE80211_MODE_VHT_5GHZ)) { 1374 if (isset(bands, IEEE80211_MODE_11B) || 1375 isset(bands, IEEE80211_MODE_11G) || 1376 isset(bands, IEEE80211_MODE_11NG) || 1377 isset(bands, IEEE80211_MODE_VHT_2GHZ)) 1378 return; 1379 1380 getflags_5ghz(bands, flags, ht40, vht80); 1381 } else 1382 getflags_2ghz(bands, flags, ht40); 1383 } 1384 1385 /* 1386 * Add one 20 MHz channel into specified channel list. 1387 * You MUST NOT mix bands when calling this. It will not add 5ghz 1388 * channels if you have any B/G/N band bit set. 1389 */ 1390 /* XXX VHT */ 1391 int 1392 ieee80211_add_channel(struct ieee80211_channel chans[], int maxchans, 1393 int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower, 1394 uint32_t chan_flags, const uint8_t bands[]) 1395 { 1396 uint32_t flags[IEEE80211_MODE_MAX]; 1397 int i, error; 1398 1399 getflags(bands, flags, 0, 0); 1400 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); 1401 1402 error = addchan(chans, maxchans, nchans, ieee, freq, maxregpower, 1403 flags[0] | chan_flags); 1404 for (i = 1; flags[i] != 0 && error == 0; i++) { 1405 error = copychan_prev(chans, maxchans, nchans, 1406 flags[i] | chan_flags); 1407 } 1408 1409 return (error); 1410 } 1411 1412 static struct ieee80211_channel * 1413 findchannel(struct ieee80211_channel chans[], int nchans, uint16_t freq, 1414 uint32_t flags) 1415 { 1416 struct ieee80211_channel *c; 1417 int i; 1418 1419 flags &= IEEE80211_CHAN_ALLTURBO; 1420 /* brute force search */ 1421 for (i = 0; i < nchans; i++) { 1422 c = &chans[i]; 1423 if (c->ic_freq == freq && 1424 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1425 return c; 1426 } 1427 return NULL; 1428 } 1429 1430 /* 1431 * Add 40 MHz channel pair into specified channel list. 1432 */ 1433 /* XXX VHT */ 1434 int 1435 ieee80211_add_channel_ht40(struct ieee80211_channel chans[], int maxchans, 1436 int *nchans, uint8_t ieee, int8_t maxregpower, uint32_t flags) 1437 { 1438 struct ieee80211_channel *cent, *extc; 1439 uint16_t freq; 1440 int error; 1441 1442 freq = ieee80211_ieee2mhz(ieee, flags); 1443 1444 /* 1445 * Each entry defines an HT40 channel pair; find the 1446 * center channel, then the extension channel above. 1447 */ 1448 flags |= IEEE80211_CHAN_HT20; 1449 cent = findchannel(chans, *nchans, freq, flags); 1450 if (cent == NULL) 1451 return (EINVAL); 1452 1453 extc = findchannel(chans, *nchans, freq + 20, flags); 1454 if (extc == NULL) 1455 return (ENOENT); 1456 1457 flags &= ~IEEE80211_CHAN_HT; 1458 error = addchan(chans, maxchans, nchans, cent->ic_ieee, cent->ic_freq, 1459 maxregpower, flags | IEEE80211_CHAN_HT40U); 1460 if (error != 0) 1461 return (error); 1462 1463 error = addchan(chans, maxchans, nchans, extc->ic_ieee, extc->ic_freq, 1464 maxregpower, flags | IEEE80211_CHAN_HT40D); 1465 1466 return (error); 1467 } 1468 1469 /* 1470 * Fetch the center frequency for the primary channel. 1471 */ 1472 uint32_t 1473 ieee80211_get_channel_center_freq(const struct ieee80211_channel *c) 1474 { 1475 1476 return (c->ic_freq); 1477 } 1478 1479 /* 1480 * Fetch the center frequency for the primary BAND channel. 1481 * 1482 * For 5, 10, 20MHz channels it'll be the normally configured channel 1483 * frequency. 1484 * 1485 * For 40MHz, 80MHz, 160Mhz channels it'll the the centre of the 1486 * wide channel, not the centre of the primary channel (that's ic_freq). 1487 * 1488 * For 80+80MHz channels this will be the centre of the primary 1489 * 80MHz channel; the secondary 80MHz channel will be center_freq2(). 1490 */ 1491 uint32_t 1492 ieee80211_get_channel_center_freq1(const struct ieee80211_channel *c) 1493 { 1494 1495 /* 1496 * VHT - use the pre-calculated centre frequency 1497 * of the given channel. 1498 */ 1499 if (IEEE80211_IS_CHAN_VHT(c)) 1500 return (ieee80211_ieee2mhz(c->ic_vht_ch_freq1, c->ic_flags)); 1501 1502 if (IEEE80211_IS_CHAN_HT40U(c)) { 1503 return (c->ic_freq + 10); 1504 } 1505 if (IEEE80211_IS_CHAN_HT40D(c)) { 1506 return (c->ic_freq - 10); 1507 } 1508 1509 return (c->ic_freq); 1510 } 1511 1512 /* 1513 * For now, no 80+80 support; it will likely always return 0. 1514 */ 1515 uint32_t 1516 ieee80211_get_channel_center_freq2(const struct ieee80211_channel *c) 1517 { 1518 1519 if (IEEE80211_IS_CHAN_VHT(c) && (c->ic_vht_ch_freq2 != 0)) 1520 return (ieee80211_ieee2mhz(c->ic_vht_ch_freq2, c->ic_flags)); 1521 1522 return (0); 1523 } 1524 1525 /* 1526 * Adds channels into specified channel list (ieee[] array must be sorted). 1527 * Channels are already sorted. 1528 */ 1529 static int 1530 add_chanlist(struct ieee80211_channel chans[], int maxchans, int *nchans, 1531 const uint8_t ieee[], int nieee, uint32_t flags[]) 1532 { 1533 uint16_t freq; 1534 int i, j, error; 1535 int is_vht; 1536 1537 for (i = 0; i < nieee; i++) { 1538 freq = ieee80211_ieee2mhz(ieee[i], flags[0]); 1539 for (j = 0; flags[j] != 0; j++) { 1540 /* 1541 * Notes: 1542 * + HT40 and VHT40 channels occur together, so 1543 * we need to be careful that we actually allow that. 1544 * + VHT80, VHT160 will coexist with HT40/VHT40, so 1545 * make sure it's not skipped because of the overlap 1546 * check used for (V)HT40. 1547 */ 1548 is_vht = !! (flags[j] & IEEE80211_CHAN_VHT); 1549 1550 /* XXX TODO FIXME VHT80P80. */ 1551 /* XXX TODO FIXME VHT160. */ 1552 1553 /* 1554 * Test for VHT80. 1555 * XXX This is all very broken right now. 1556 * What we /should/ do is: 1557 * 1558 * + check that the frequency is in the list of 1559 * allowed VHT80 ranges; and 1560 * + the other 3 channels in the list are actually 1561 * also available. 1562 */ 1563 if (is_vht && flags[j] & IEEE80211_CHAN_VHT80) 1564 if (! is_vht80_valid_freq(freq)) 1565 continue; 1566 1567 /* 1568 * Test for (V)HT40. 1569 * 1570 * This is also a fall through from VHT80; as we only 1571 * allow a VHT80 channel if the VHT40 combination is 1572 * also valid. If the VHT40 form is not valid then 1573 * we certainly can't do VHT80.. 1574 */ 1575 if (flags[j] & IEEE80211_CHAN_HT40D) 1576 /* 1577 * Can't have a "lower" channel if we are the 1578 * first channel. 1579 * 1580 * Can't have a "lower" channel if it's below/ 1581 * within 20MHz of the first channel. 1582 * 1583 * Can't have a "lower" channel if the channel 1584 * below it is not 20MHz away. 1585 */ 1586 if (i == 0 || ieee[i] < ieee[0] + 4 || 1587 freq - 20 != 1588 ieee80211_ieee2mhz(ieee[i] - 4, flags[j])) 1589 continue; 1590 if (flags[j] & IEEE80211_CHAN_HT40U) 1591 /* 1592 * Can't have an "upper" channel if we are 1593 * the last channel. 1594 * 1595 * Can't have an "upper" channel be above the 1596 * last channel in the list. 1597 * 1598 * Can't have an "upper" channel if the next 1599 * channel according to the math isn't 20MHz 1600 * away. (Likely for channel 13/14.) 1601 */ 1602 if (i == nieee - 1 || 1603 ieee[i] + 4 > ieee[nieee - 1] || 1604 freq + 20 != 1605 ieee80211_ieee2mhz(ieee[i] + 4, flags[j])) 1606 continue; 1607 1608 if (j == 0) { 1609 error = addchan(chans, maxchans, nchans, 1610 ieee[i], freq, 0, flags[j]); 1611 } else { 1612 error = copychan_prev(chans, maxchans, nchans, 1613 flags[j]); 1614 } 1615 if (error != 0) 1616 return (error); 1617 } 1618 } 1619 1620 return (0); 1621 } 1622 1623 int 1624 ieee80211_add_channel_list_2ghz(struct ieee80211_channel chans[], int maxchans, 1625 int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[], 1626 int ht40) 1627 { 1628 uint32_t flags[IEEE80211_MODE_MAX]; 1629 1630 /* XXX no VHT for now */ 1631 getflags_2ghz(bands, flags, ht40); 1632 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); 1633 1634 return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags)); 1635 } 1636 1637 int 1638 ieee80211_add_channels_default_2ghz(struct ieee80211_channel chans[], 1639 int maxchans, int *nchans, const uint8_t bands[], int ht40) 1640 { 1641 const uint8_t default_chan_list[] = 1642 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }; 1643 1644 return (ieee80211_add_channel_list_2ghz(chans, maxchans, nchans, 1645 default_chan_list, nitems(default_chan_list), bands, ht40)); 1646 } 1647 1648 int 1649 ieee80211_add_channel_list_5ghz(struct ieee80211_channel chans[], int maxchans, 1650 int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[], 1651 int ht40) 1652 { 1653 uint32_t flags[IEEE80211_MODE_MAX]; 1654 int vht80 = 0; 1655 1656 /* 1657 * For now, assume VHT == VHT80 support as a minimum. 1658 */ 1659 if (isset(bands, IEEE80211_MODE_VHT_5GHZ)) 1660 vht80 = 1; 1661 1662 getflags_5ghz(bands, flags, ht40, vht80); 1663 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); 1664 1665 return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags)); 1666 } 1667 1668 /* 1669 * Locate a channel given a frequency+flags. We cache 1670 * the previous lookup to optimize switching between two 1671 * channels--as happens with dynamic turbo. 1672 */ 1673 struct ieee80211_channel * 1674 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 1675 { 1676 struct ieee80211_channel *c; 1677 1678 flags &= IEEE80211_CHAN_ALLTURBO; 1679 c = ic->ic_prevchan; 1680 if (c != NULL && c->ic_freq == freq && 1681 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1682 return c; 1683 /* brute force search */ 1684 return (findchannel(ic->ic_channels, ic->ic_nchans, freq, flags)); 1685 } 1686 1687 /* 1688 * Locate a channel given a channel number+flags. We cache 1689 * the previous lookup to optimize switching between two 1690 * channels--as happens with dynamic turbo. 1691 */ 1692 struct ieee80211_channel * 1693 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 1694 { 1695 struct ieee80211_channel *c; 1696 int i; 1697 1698 flags &= IEEE80211_CHAN_ALLTURBO; 1699 c = ic->ic_prevchan; 1700 if (c != NULL && c->ic_ieee == ieee && 1701 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1702 return c; 1703 /* brute force search */ 1704 for (i = 0; i < ic->ic_nchans; i++) { 1705 c = &ic->ic_channels[i]; 1706 if (c->ic_ieee == ieee && 1707 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1708 return c; 1709 } 1710 return NULL; 1711 } 1712 1713 /* 1714 * Lookup a channel suitable for the given rx status. 1715 * 1716 * This is used to find a channel for a frame (eg beacon, probe 1717 * response) based purely on the received PHY information. 1718 * 1719 * For now it tries to do it based on R_FREQ / R_IEEE. 1720 * This is enough for 11bg and 11a (and thus 11ng/11na) 1721 * but it will not be enough for GSM, PSB channels and the 1722 * like. It also doesn't know about legacy-turbog and 1723 * legacy-turbo modes, which some offload NICs actually 1724 * support in weird ways. 1725 * 1726 * Takes the ic and rxstatus; returns the channel or NULL 1727 * if not found. 1728 * 1729 * XXX TODO: Add support for that when the need arises. 1730 */ 1731 struct ieee80211_channel * 1732 ieee80211_lookup_channel_rxstatus(struct ieee80211vap *vap, 1733 const struct ieee80211_rx_stats *rxs) 1734 { 1735 struct ieee80211com *ic = vap->iv_ic; 1736 uint32_t flags; 1737 struct ieee80211_channel *c; 1738 1739 if (rxs == NULL) 1740 return (NULL); 1741 1742 /* 1743 * Strictly speaking we only use freq for now, 1744 * however later on we may wish to just store 1745 * the ieee for verification. 1746 */ 1747 if ((rxs->r_flags & IEEE80211_R_FREQ) == 0) 1748 return (NULL); 1749 if ((rxs->r_flags & IEEE80211_R_IEEE) == 0) 1750 return (NULL); 1751 1752 /* 1753 * If the rx status contains a valid ieee/freq, then 1754 * ensure we populate the correct channel information 1755 * in rxchan before passing it up to the scan infrastructure. 1756 * Offload NICs will pass up beacons from all channels 1757 * during background scans. 1758 */ 1759 1760 /* Determine a band */ 1761 /* XXX should be done by the driver? */ 1762 if (rxs->c_freq < 3000) { 1763 flags = IEEE80211_CHAN_G; 1764 } else { 1765 flags = IEEE80211_CHAN_A; 1766 } 1767 1768 /* Channel lookup */ 1769 c = ieee80211_find_channel(ic, rxs->c_freq, flags); 1770 1771 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INPUT, 1772 "%s: freq=%d, ieee=%d, flags=0x%08x; c=%p\n", 1773 __func__, (int) rxs->c_freq, (int) rxs->c_ieee, flags, c); 1774 1775 return (c); 1776 } 1777 1778 static void 1779 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 1780 { 1781 #define ADD(_ic, _s, _o) \ 1782 ifmedia_add(media, \ 1783 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 1784 static const u_int mopts[IEEE80211_MODE_MAX] = { 1785 [IEEE80211_MODE_AUTO] = IFM_AUTO, 1786 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 1787 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 1788 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 1789 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 1790 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1791 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 1792 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1793 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 1794 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 1795 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 1796 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 1797 [IEEE80211_MODE_VHT_2GHZ] = IFM_IEEE80211_VHT2G, 1798 [IEEE80211_MODE_VHT_5GHZ] = IFM_IEEE80211_VHT5G, 1799 }; 1800 u_int mopt; 1801 1802 mopt = mopts[mode]; 1803 if (addsta) 1804 ADD(ic, mword, mopt); /* STA mode has no cap */ 1805 if (caps & IEEE80211_C_IBSS) 1806 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 1807 if (caps & IEEE80211_C_HOSTAP) 1808 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 1809 if (caps & IEEE80211_C_AHDEMO) 1810 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 1811 if (caps & IEEE80211_C_MONITOR) 1812 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 1813 if (caps & IEEE80211_C_WDS) 1814 ADD(media, mword, mopt | IFM_IEEE80211_WDS); 1815 if (caps & IEEE80211_C_MBSS) 1816 ADD(media, mword, mopt | IFM_IEEE80211_MBSS); 1817 #undef ADD 1818 } 1819 1820 /* 1821 * Setup the media data structures according to the channel and 1822 * rate tables. 1823 */ 1824 static int 1825 ieee80211_media_setup(struct ieee80211com *ic, 1826 struct ifmedia *media, int caps, int addsta, 1827 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 1828 { 1829 int i, j, rate, maxrate, mword, r; 1830 enum ieee80211_phymode mode; 1831 const struct ieee80211_rateset *rs; 1832 struct ieee80211_rateset allrates; 1833 1834 /* 1835 * Fill in media characteristics. 1836 */ 1837 ifmedia_init(media, 0, media_change, media_stat); 1838 maxrate = 0; 1839 /* 1840 * Add media for legacy operating modes. 1841 */ 1842 memset(&allrates, 0, sizeof(allrates)); 1843 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 1844 if (isclr(ic->ic_modecaps, mode)) 1845 continue; 1846 addmedia(media, caps, addsta, mode, IFM_AUTO); 1847 if (mode == IEEE80211_MODE_AUTO) 1848 continue; 1849 rs = &ic->ic_sup_rates[mode]; 1850 for (i = 0; i < rs->rs_nrates; i++) { 1851 rate = rs->rs_rates[i]; 1852 mword = ieee80211_rate2media(ic, rate, mode); 1853 if (mword == 0) 1854 continue; 1855 addmedia(media, caps, addsta, mode, mword); 1856 /* 1857 * Add legacy rate to the collection of all rates. 1858 */ 1859 r = rate & IEEE80211_RATE_VAL; 1860 for (j = 0; j < allrates.rs_nrates; j++) 1861 if (allrates.rs_rates[j] == r) 1862 break; 1863 if (j == allrates.rs_nrates) { 1864 /* unique, add to the set */ 1865 allrates.rs_rates[j] = r; 1866 allrates.rs_nrates++; 1867 } 1868 rate = (rate & IEEE80211_RATE_VAL) / 2; 1869 if (rate > maxrate) 1870 maxrate = rate; 1871 } 1872 } 1873 for (i = 0; i < allrates.rs_nrates; i++) { 1874 mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1875 IEEE80211_MODE_AUTO); 1876 if (mword == 0) 1877 continue; 1878 /* NB: remove media options from mword */ 1879 addmedia(media, caps, addsta, 1880 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1881 } 1882 /* 1883 * Add HT/11n media. Note that we do not have enough 1884 * bits in the media subtype to express the MCS so we 1885 * use a "placeholder" media subtype and any fixed MCS 1886 * must be specified with a different mechanism. 1887 */ 1888 for (; mode <= IEEE80211_MODE_11NG; mode++) { 1889 if (isclr(ic->ic_modecaps, mode)) 1890 continue; 1891 addmedia(media, caps, addsta, mode, IFM_AUTO); 1892 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1893 } 1894 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1895 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1896 addmedia(media, caps, addsta, 1897 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1898 i = ic->ic_txstream * 8 - 1; 1899 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) && 1900 (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) 1901 rate = ieee80211_htrates[i].ht40_rate_400ns; 1902 else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40)) 1903 rate = ieee80211_htrates[i].ht40_rate_800ns; 1904 else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20)) 1905 rate = ieee80211_htrates[i].ht20_rate_400ns; 1906 else 1907 rate = ieee80211_htrates[i].ht20_rate_800ns; 1908 if (rate > maxrate) 1909 maxrate = rate; 1910 } 1911 1912 /* 1913 * Add VHT media. 1914 */ 1915 for (; mode <= IEEE80211_MODE_VHT_5GHZ; mode++) { 1916 if (isclr(ic->ic_modecaps, mode)) 1917 continue; 1918 addmedia(media, caps, addsta, mode, IFM_AUTO); 1919 addmedia(media, caps, addsta, mode, IFM_IEEE80211_VHT); 1920 1921 /* XXX TODO: VHT maxrate */ 1922 } 1923 1924 return maxrate; 1925 } 1926 1927 /* XXX inline or eliminate? */ 1928 const struct ieee80211_rateset * 1929 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1930 { 1931 /* XXX does this work for 11ng basic rates? */ 1932 return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1933 } 1934 1935 /* XXX inline or eliminate? */ 1936 const struct ieee80211_htrateset * 1937 ieee80211_get_suphtrates(struct ieee80211com *ic, 1938 const struct ieee80211_channel *c) 1939 { 1940 return &ic->ic_sup_htrates; 1941 } 1942 1943 void 1944 ieee80211_announce(struct ieee80211com *ic) 1945 { 1946 int i, rate, mword; 1947 enum ieee80211_phymode mode; 1948 const struct ieee80211_rateset *rs; 1949 1950 /* NB: skip AUTO since it has no rates */ 1951 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1952 if (isclr(ic->ic_modecaps, mode)) 1953 continue; 1954 ic_printf(ic, "%s rates: ", ieee80211_phymode_name[mode]); 1955 rs = &ic->ic_sup_rates[mode]; 1956 for (i = 0; i < rs->rs_nrates; i++) { 1957 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1958 if (mword == 0) 1959 continue; 1960 rate = ieee80211_media2rate(mword); 1961 printf("%s%d%sMbps", (i != 0 ? " " : ""), 1962 rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1963 } 1964 printf("\n"); 1965 } 1966 ieee80211_ht_announce(ic); 1967 ieee80211_vht_announce(ic); 1968 } 1969 1970 void 1971 ieee80211_announce_channels(struct ieee80211com *ic) 1972 { 1973 const struct ieee80211_channel *c; 1974 char type; 1975 int i, cw; 1976 1977 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1978 for (i = 0; i < ic->ic_nchans; i++) { 1979 c = &ic->ic_channels[i]; 1980 if (IEEE80211_IS_CHAN_ST(c)) 1981 type = 'S'; 1982 else if (IEEE80211_IS_CHAN_108A(c)) 1983 type = 'T'; 1984 else if (IEEE80211_IS_CHAN_108G(c)) 1985 type = 'G'; 1986 else if (IEEE80211_IS_CHAN_HT(c)) 1987 type = 'n'; 1988 else if (IEEE80211_IS_CHAN_A(c)) 1989 type = 'a'; 1990 else if (IEEE80211_IS_CHAN_ANYG(c)) 1991 type = 'g'; 1992 else if (IEEE80211_IS_CHAN_B(c)) 1993 type = 'b'; 1994 else 1995 type = 'f'; 1996 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1997 cw = 40; 1998 else if (IEEE80211_IS_CHAN_HALF(c)) 1999 cw = 10; 2000 else if (IEEE80211_IS_CHAN_QUARTER(c)) 2001 cw = 5; 2002 else 2003 cw = 20; 2004 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 2005 , c->ic_ieee, c->ic_freq, type 2006 , cw 2007 , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 2008 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 2009 , c->ic_maxregpower 2010 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 2011 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 2012 ); 2013 } 2014 } 2015 2016 static int 2017 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 2018 { 2019 switch (IFM_MODE(ime->ifm_media)) { 2020 case IFM_IEEE80211_11A: 2021 *mode = IEEE80211_MODE_11A; 2022 break; 2023 case IFM_IEEE80211_11B: 2024 *mode = IEEE80211_MODE_11B; 2025 break; 2026 case IFM_IEEE80211_11G: 2027 *mode = IEEE80211_MODE_11G; 2028 break; 2029 case IFM_IEEE80211_FH: 2030 *mode = IEEE80211_MODE_FH; 2031 break; 2032 case IFM_IEEE80211_11NA: 2033 *mode = IEEE80211_MODE_11NA; 2034 break; 2035 case IFM_IEEE80211_11NG: 2036 *mode = IEEE80211_MODE_11NG; 2037 break; 2038 case IFM_AUTO: 2039 *mode = IEEE80211_MODE_AUTO; 2040 break; 2041 default: 2042 return 0; 2043 } 2044 /* 2045 * Turbo mode is an ``option''. 2046 * XXX does not apply to AUTO 2047 */ 2048 if (ime->ifm_media & IFM_IEEE80211_TURBO) { 2049 if (*mode == IEEE80211_MODE_11A) { 2050 if (flags & IEEE80211_F_TURBOP) 2051 *mode = IEEE80211_MODE_TURBO_A; 2052 else 2053 *mode = IEEE80211_MODE_STURBO_A; 2054 } else if (*mode == IEEE80211_MODE_11G) 2055 *mode = IEEE80211_MODE_TURBO_G; 2056 else 2057 return 0; 2058 } 2059 /* XXX HT40 +/- */ 2060 return 1; 2061 } 2062 2063 /* 2064 * Handle a media change request on the vap interface. 2065 */ 2066 int 2067 ieee80211_media_change(struct ifnet *ifp) 2068 { 2069 struct ieee80211vap *vap = ifp->if_softc; 2070 struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 2071 uint16_t newmode; 2072 2073 if (!media2mode(ime, vap->iv_flags, &newmode)) 2074 return EINVAL; 2075 if (vap->iv_des_mode != newmode) { 2076 vap->iv_des_mode = newmode; 2077 /* XXX kick state machine if up+running */ 2078 } 2079 return 0; 2080 } 2081 2082 /* 2083 * Common code to calculate the media status word 2084 * from the operating mode and channel state. 2085 */ 2086 static int 2087 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 2088 { 2089 int status; 2090 2091 status = IFM_IEEE80211; 2092 switch (opmode) { 2093 case IEEE80211_M_STA: 2094 break; 2095 case IEEE80211_M_IBSS: 2096 status |= IFM_IEEE80211_ADHOC; 2097 break; 2098 case IEEE80211_M_HOSTAP: 2099 status |= IFM_IEEE80211_HOSTAP; 2100 break; 2101 case IEEE80211_M_MONITOR: 2102 status |= IFM_IEEE80211_MONITOR; 2103 break; 2104 case IEEE80211_M_AHDEMO: 2105 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 2106 break; 2107 case IEEE80211_M_WDS: 2108 status |= IFM_IEEE80211_WDS; 2109 break; 2110 case IEEE80211_M_MBSS: 2111 status |= IFM_IEEE80211_MBSS; 2112 break; 2113 } 2114 if (IEEE80211_IS_CHAN_HTA(chan)) { 2115 status |= IFM_IEEE80211_11NA; 2116 } else if (IEEE80211_IS_CHAN_HTG(chan)) { 2117 status |= IFM_IEEE80211_11NG; 2118 } else if (IEEE80211_IS_CHAN_A(chan)) { 2119 status |= IFM_IEEE80211_11A; 2120 } else if (IEEE80211_IS_CHAN_B(chan)) { 2121 status |= IFM_IEEE80211_11B; 2122 } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 2123 status |= IFM_IEEE80211_11G; 2124 } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 2125 status |= IFM_IEEE80211_FH; 2126 } 2127 /* XXX else complain? */ 2128 2129 if (IEEE80211_IS_CHAN_TURBO(chan)) 2130 status |= IFM_IEEE80211_TURBO; 2131 #if 0 2132 if (IEEE80211_IS_CHAN_HT20(chan)) 2133 status |= IFM_IEEE80211_HT20; 2134 if (IEEE80211_IS_CHAN_HT40(chan)) 2135 status |= IFM_IEEE80211_HT40; 2136 #endif 2137 return status; 2138 } 2139 2140 void 2141 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 2142 { 2143 struct ieee80211vap *vap = ifp->if_softc; 2144 struct ieee80211com *ic = vap->iv_ic; 2145 enum ieee80211_phymode mode; 2146 2147 imr->ifm_status = IFM_AVALID; 2148 /* 2149 * NB: use the current channel's mode to lock down a xmit 2150 * rate only when running; otherwise we may have a mismatch 2151 * in which case the rate will not be convertible. 2152 */ 2153 if (vap->iv_state == IEEE80211_S_RUN || 2154 vap->iv_state == IEEE80211_S_SLEEP) { 2155 imr->ifm_status |= IFM_ACTIVE; 2156 mode = ieee80211_chan2mode(ic->ic_curchan); 2157 } else 2158 mode = IEEE80211_MODE_AUTO; 2159 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 2160 /* 2161 * Calculate a current rate if possible. 2162 */ 2163 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 2164 /* 2165 * A fixed rate is set, report that. 2166 */ 2167 imr->ifm_active |= ieee80211_rate2media(ic, 2168 vap->iv_txparms[mode].ucastrate, mode); 2169 } else if (vap->iv_opmode == IEEE80211_M_STA) { 2170 /* 2171 * In station mode report the current transmit rate. 2172 */ 2173 imr->ifm_active |= ieee80211_rate2media(ic, 2174 vap->iv_bss->ni_txrate, mode); 2175 } else 2176 imr->ifm_active |= IFM_AUTO; 2177 if (imr->ifm_status & IFM_ACTIVE) 2178 imr->ifm_current = imr->ifm_active; 2179 } 2180 2181 /* 2182 * Set the current phy mode and recalculate the active channel 2183 * set based on the available channels for this mode. Also 2184 * select a new default/current channel if the current one is 2185 * inappropriate for this mode. 2186 */ 2187 int 2188 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 2189 { 2190 /* 2191 * Adjust basic rates in 11b/11g supported rate set. 2192 * Note that if operating on a hal/quarter rate channel 2193 * this is a noop as those rates sets are different 2194 * and used instead. 2195 */ 2196 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 2197 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 2198 2199 ic->ic_curmode = mode; 2200 ieee80211_reset_erp(ic); /* reset global ERP state */ 2201 2202 return 0; 2203 } 2204 2205 /* 2206 * Return the phy mode for with the specified channel. 2207 */ 2208 enum ieee80211_phymode 2209 ieee80211_chan2mode(const struct ieee80211_channel *chan) 2210 { 2211 2212 if (IEEE80211_IS_CHAN_VHT_2GHZ(chan)) 2213 return IEEE80211_MODE_VHT_2GHZ; 2214 else if (IEEE80211_IS_CHAN_VHT_5GHZ(chan)) 2215 return IEEE80211_MODE_VHT_5GHZ; 2216 else if (IEEE80211_IS_CHAN_HTA(chan)) 2217 return IEEE80211_MODE_11NA; 2218 else if (IEEE80211_IS_CHAN_HTG(chan)) 2219 return IEEE80211_MODE_11NG; 2220 else if (IEEE80211_IS_CHAN_108G(chan)) 2221 return IEEE80211_MODE_TURBO_G; 2222 else if (IEEE80211_IS_CHAN_ST(chan)) 2223 return IEEE80211_MODE_STURBO_A; 2224 else if (IEEE80211_IS_CHAN_TURBO(chan)) 2225 return IEEE80211_MODE_TURBO_A; 2226 else if (IEEE80211_IS_CHAN_HALF(chan)) 2227 return IEEE80211_MODE_HALF; 2228 else if (IEEE80211_IS_CHAN_QUARTER(chan)) 2229 return IEEE80211_MODE_QUARTER; 2230 else if (IEEE80211_IS_CHAN_A(chan)) 2231 return IEEE80211_MODE_11A; 2232 else if (IEEE80211_IS_CHAN_ANYG(chan)) 2233 return IEEE80211_MODE_11G; 2234 else if (IEEE80211_IS_CHAN_B(chan)) 2235 return IEEE80211_MODE_11B; 2236 else if (IEEE80211_IS_CHAN_FHSS(chan)) 2237 return IEEE80211_MODE_FH; 2238 2239 /* NB: should not get here */ 2240 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 2241 __func__, chan->ic_freq, chan->ic_flags); 2242 return IEEE80211_MODE_11B; 2243 } 2244 2245 struct ratemedia { 2246 u_int match; /* rate + mode */ 2247 u_int media; /* if_media rate */ 2248 }; 2249 2250 static int 2251 findmedia(const struct ratemedia rates[], int n, u_int match) 2252 { 2253 int i; 2254 2255 for (i = 0; i < n; i++) 2256 if (rates[i].match == match) 2257 return rates[i].media; 2258 return IFM_AUTO; 2259 } 2260 2261 /* 2262 * Convert IEEE80211 rate value to ifmedia subtype. 2263 * Rate is either a legacy rate in units of 0.5Mbps 2264 * or an MCS index. 2265 */ 2266 int 2267 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 2268 { 2269 static const struct ratemedia rates[] = { 2270 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 2271 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 2272 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 2273 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 2274 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 2275 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 2276 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 2277 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 2278 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 2279 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 2280 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 2281 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 2282 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 2283 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 2284 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 2285 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 2286 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 2287 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 2288 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 2289 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 2290 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 2291 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 2292 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 2293 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 2294 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 2295 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 2296 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 2297 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 2298 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 2299 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 2300 /* NB: OFDM72 doesn't really exist so we don't handle it */ 2301 }; 2302 static const struct ratemedia htrates[] = { 2303 { 0, IFM_IEEE80211_MCS }, 2304 { 1, IFM_IEEE80211_MCS }, 2305 { 2, IFM_IEEE80211_MCS }, 2306 { 3, IFM_IEEE80211_MCS }, 2307 { 4, IFM_IEEE80211_MCS }, 2308 { 5, IFM_IEEE80211_MCS }, 2309 { 6, IFM_IEEE80211_MCS }, 2310 { 7, IFM_IEEE80211_MCS }, 2311 { 8, IFM_IEEE80211_MCS }, 2312 { 9, IFM_IEEE80211_MCS }, 2313 { 10, IFM_IEEE80211_MCS }, 2314 { 11, IFM_IEEE80211_MCS }, 2315 { 12, IFM_IEEE80211_MCS }, 2316 { 13, IFM_IEEE80211_MCS }, 2317 { 14, IFM_IEEE80211_MCS }, 2318 { 15, IFM_IEEE80211_MCS }, 2319 { 16, IFM_IEEE80211_MCS }, 2320 { 17, IFM_IEEE80211_MCS }, 2321 { 18, IFM_IEEE80211_MCS }, 2322 { 19, IFM_IEEE80211_MCS }, 2323 { 20, IFM_IEEE80211_MCS }, 2324 { 21, IFM_IEEE80211_MCS }, 2325 { 22, IFM_IEEE80211_MCS }, 2326 { 23, IFM_IEEE80211_MCS }, 2327 { 24, IFM_IEEE80211_MCS }, 2328 { 25, IFM_IEEE80211_MCS }, 2329 { 26, IFM_IEEE80211_MCS }, 2330 { 27, IFM_IEEE80211_MCS }, 2331 { 28, IFM_IEEE80211_MCS }, 2332 { 29, IFM_IEEE80211_MCS }, 2333 { 30, IFM_IEEE80211_MCS }, 2334 { 31, IFM_IEEE80211_MCS }, 2335 { 32, IFM_IEEE80211_MCS }, 2336 { 33, IFM_IEEE80211_MCS }, 2337 { 34, IFM_IEEE80211_MCS }, 2338 { 35, IFM_IEEE80211_MCS }, 2339 { 36, IFM_IEEE80211_MCS }, 2340 { 37, IFM_IEEE80211_MCS }, 2341 { 38, IFM_IEEE80211_MCS }, 2342 { 39, IFM_IEEE80211_MCS }, 2343 { 40, IFM_IEEE80211_MCS }, 2344 { 41, IFM_IEEE80211_MCS }, 2345 { 42, IFM_IEEE80211_MCS }, 2346 { 43, IFM_IEEE80211_MCS }, 2347 { 44, IFM_IEEE80211_MCS }, 2348 { 45, IFM_IEEE80211_MCS }, 2349 { 46, IFM_IEEE80211_MCS }, 2350 { 47, IFM_IEEE80211_MCS }, 2351 { 48, IFM_IEEE80211_MCS }, 2352 { 49, IFM_IEEE80211_MCS }, 2353 { 50, IFM_IEEE80211_MCS }, 2354 { 51, IFM_IEEE80211_MCS }, 2355 { 52, IFM_IEEE80211_MCS }, 2356 { 53, IFM_IEEE80211_MCS }, 2357 { 54, IFM_IEEE80211_MCS }, 2358 { 55, IFM_IEEE80211_MCS }, 2359 { 56, IFM_IEEE80211_MCS }, 2360 { 57, IFM_IEEE80211_MCS }, 2361 { 58, IFM_IEEE80211_MCS }, 2362 { 59, IFM_IEEE80211_MCS }, 2363 { 60, IFM_IEEE80211_MCS }, 2364 { 61, IFM_IEEE80211_MCS }, 2365 { 62, IFM_IEEE80211_MCS }, 2366 { 63, IFM_IEEE80211_MCS }, 2367 { 64, IFM_IEEE80211_MCS }, 2368 { 65, IFM_IEEE80211_MCS }, 2369 { 66, IFM_IEEE80211_MCS }, 2370 { 67, IFM_IEEE80211_MCS }, 2371 { 68, IFM_IEEE80211_MCS }, 2372 { 69, IFM_IEEE80211_MCS }, 2373 { 70, IFM_IEEE80211_MCS }, 2374 { 71, IFM_IEEE80211_MCS }, 2375 { 72, IFM_IEEE80211_MCS }, 2376 { 73, IFM_IEEE80211_MCS }, 2377 { 74, IFM_IEEE80211_MCS }, 2378 { 75, IFM_IEEE80211_MCS }, 2379 { 76, IFM_IEEE80211_MCS }, 2380 }; 2381 int m; 2382 2383 /* 2384 * Check 11n rates first for match as an MCS. 2385 */ 2386 if (mode == IEEE80211_MODE_11NA) { 2387 if (rate & IEEE80211_RATE_MCS) { 2388 rate &= ~IEEE80211_RATE_MCS; 2389 m = findmedia(htrates, nitems(htrates), rate); 2390 if (m != IFM_AUTO) 2391 return m | IFM_IEEE80211_11NA; 2392 } 2393 } else if (mode == IEEE80211_MODE_11NG) { 2394 /* NB: 12 is ambiguous, it will be treated as an MCS */ 2395 if (rate & IEEE80211_RATE_MCS) { 2396 rate &= ~IEEE80211_RATE_MCS; 2397 m = findmedia(htrates, nitems(htrates), rate); 2398 if (m != IFM_AUTO) 2399 return m | IFM_IEEE80211_11NG; 2400 } 2401 } 2402 rate &= IEEE80211_RATE_VAL; 2403 switch (mode) { 2404 case IEEE80211_MODE_11A: 2405 case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 2406 case IEEE80211_MODE_QUARTER: 2407 case IEEE80211_MODE_11NA: 2408 case IEEE80211_MODE_TURBO_A: 2409 case IEEE80211_MODE_STURBO_A: 2410 return findmedia(rates, nitems(rates), 2411 rate | IFM_IEEE80211_11A); 2412 case IEEE80211_MODE_11B: 2413 return findmedia(rates, nitems(rates), 2414 rate | IFM_IEEE80211_11B); 2415 case IEEE80211_MODE_FH: 2416 return findmedia(rates, nitems(rates), 2417 rate | IFM_IEEE80211_FH); 2418 case IEEE80211_MODE_AUTO: 2419 /* NB: ic may be NULL for some drivers */ 2420 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 2421 return findmedia(rates, nitems(rates), 2422 rate | IFM_IEEE80211_FH); 2423 /* NB: hack, 11g matches both 11b+11a rates */ 2424 /* fall thru... */ 2425 case IEEE80211_MODE_11G: 2426 case IEEE80211_MODE_11NG: 2427 case IEEE80211_MODE_TURBO_G: 2428 return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11G); 2429 case IEEE80211_MODE_VHT_2GHZ: 2430 case IEEE80211_MODE_VHT_5GHZ: 2431 /* XXX TODO: need to figure out mapping for VHT rates */ 2432 return IFM_AUTO; 2433 } 2434 return IFM_AUTO; 2435 } 2436 2437 int 2438 ieee80211_media2rate(int mword) 2439 { 2440 static const int ieeerates[] = { 2441 -1, /* IFM_AUTO */ 2442 0, /* IFM_MANUAL */ 2443 0, /* IFM_NONE */ 2444 2, /* IFM_IEEE80211_FH1 */ 2445 4, /* IFM_IEEE80211_FH2 */ 2446 2, /* IFM_IEEE80211_DS1 */ 2447 4, /* IFM_IEEE80211_DS2 */ 2448 11, /* IFM_IEEE80211_DS5 */ 2449 22, /* IFM_IEEE80211_DS11 */ 2450 44, /* IFM_IEEE80211_DS22 */ 2451 12, /* IFM_IEEE80211_OFDM6 */ 2452 18, /* IFM_IEEE80211_OFDM9 */ 2453 24, /* IFM_IEEE80211_OFDM12 */ 2454 36, /* IFM_IEEE80211_OFDM18 */ 2455 48, /* IFM_IEEE80211_OFDM24 */ 2456 72, /* IFM_IEEE80211_OFDM36 */ 2457 96, /* IFM_IEEE80211_OFDM48 */ 2458 108, /* IFM_IEEE80211_OFDM54 */ 2459 144, /* IFM_IEEE80211_OFDM72 */ 2460 0, /* IFM_IEEE80211_DS354k */ 2461 0, /* IFM_IEEE80211_DS512k */ 2462 6, /* IFM_IEEE80211_OFDM3 */ 2463 9, /* IFM_IEEE80211_OFDM4 */ 2464 54, /* IFM_IEEE80211_OFDM27 */ 2465 -1, /* IFM_IEEE80211_MCS */ 2466 -1, /* IFM_IEEE80211_VHT */ 2467 }; 2468 return IFM_SUBTYPE(mword) < nitems(ieeerates) ? 2469 ieeerates[IFM_SUBTYPE(mword)] : 0; 2470 } 2471 2472 /* 2473 * The following hash function is adapted from "Hash Functions" by Bob Jenkins 2474 * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). 2475 */ 2476 #define mix(a, b, c) \ 2477 do { \ 2478 a -= b; a -= c; a ^= (c >> 13); \ 2479 b -= c; b -= a; b ^= (a << 8); \ 2480 c -= a; c -= b; c ^= (b >> 13); \ 2481 a -= b; a -= c; a ^= (c >> 12); \ 2482 b -= c; b -= a; b ^= (a << 16); \ 2483 c -= a; c -= b; c ^= (b >> 5); \ 2484 a -= b; a -= c; a ^= (c >> 3); \ 2485 b -= c; b -= a; b ^= (a << 10); \ 2486 c -= a; c -= b; c ^= (b >> 15); \ 2487 } while (/*CONSTCOND*/0) 2488 2489 uint32_t 2490 ieee80211_mac_hash(const struct ieee80211com *ic, 2491 const uint8_t addr[IEEE80211_ADDR_LEN]) 2492 { 2493 uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; 2494 2495 b += addr[5] << 8; 2496 b += addr[4]; 2497 a += addr[3] << 24; 2498 a += addr[2] << 16; 2499 a += addr[1] << 8; 2500 a += addr[0]; 2501 2502 mix(a, b, c); 2503 2504 return c; 2505 } 2506 #undef mix 2507 2508 char 2509 ieee80211_channel_type_char(const struct ieee80211_channel *c) 2510 { 2511 if (IEEE80211_IS_CHAN_ST(c)) 2512 return 'S'; 2513 if (IEEE80211_IS_CHAN_108A(c)) 2514 return 'T'; 2515 if (IEEE80211_IS_CHAN_108G(c)) 2516 return 'G'; 2517 if (IEEE80211_IS_CHAN_VHT(c)) 2518 return 'v'; 2519 if (IEEE80211_IS_CHAN_HT(c)) 2520 return 'n'; 2521 if (IEEE80211_IS_CHAN_A(c)) 2522 return 'a'; 2523 if (IEEE80211_IS_CHAN_ANYG(c)) 2524 return 'g'; 2525 if (IEEE80211_IS_CHAN_B(c)) 2526 return 'b'; 2527 return 'f'; 2528 } 2529