ieee80211.c revision 287197
1116742Ssam/*- 2116904Ssam * Copyright (c) 2001 Atsushi Onoe 3186904Ssam * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 4116742Ssam * All rights reserved. 5116742Ssam * 6116742Ssam * Redistribution and use in source and binary forms, with or without 7116742Ssam * modification, are permitted provided that the following conditions 8116742Ssam * are met: 9116742Ssam * 1. Redistributions of source code must retain the above copyright 10116904Ssam * notice, this list of conditions and the following disclaimer. 11116904Ssam * 2. Redistributions in binary form must reproduce the above copyright 12116904Ssam * notice, this list of conditions and the following disclaimer in the 13116904Ssam * documentation and/or other materials provided with the distribution. 14116742Ssam * 15116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16116904Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17116904Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18116904Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19116904Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20116904Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21116904Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22116904Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23116904Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24116904Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25116742Ssam */ 26116742Ssam 27116742Ssam#include <sys/cdefs.h> 28116742Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211.c 287197 2015-08-27 08:56:39Z glebius $"); 29116742Ssam 30116742Ssam/* 31116742Ssam * IEEE 802.11 generic handler 32116742Ssam */ 33178354Ssam#include "opt_wlan.h" 34116742Ssam 35116742Ssam#include <sys/param.h> 36191746Sthompsa#include <sys/systm.h> 37116742Ssam#include <sys/kernel.h> 38116742Ssam#include <sys/socket.h> 39287197Sglebius#include <sys/sbuf.h> 40116742Ssam 41283529Sglebius#include <machine/stdarg.h> 42283529Sglebius 43116742Ssam#include <net/if.h> 44257176Sglebius#include <net/if_var.h> 45178354Ssam#include <net/if_dl.h> 46116742Ssam#include <net/if_media.h> 47178354Ssam#include <net/if_types.h> 48116742Ssam#include <net/ethernet.h> 49116742Ssam 50116742Ssam#include <net80211/ieee80211_var.h> 51178354Ssam#include <net80211/ieee80211_regdomain.h> 52190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 53190391Ssam#include <net80211/ieee80211_superg.h> 54190391Ssam#endif 55206358Srpaulo#include <net80211/ieee80211_ratectl.h> 56116742Ssam 57116742Ssam#include <net/bpf.h> 58116742Ssam 59178955Ssamconst char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = { 60178955Ssam [IEEE80211_MODE_AUTO] = "auto", 61178955Ssam [IEEE80211_MODE_11A] = "11a", 62178955Ssam [IEEE80211_MODE_11B] = "11b", 63178955Ssam [IEEE80211_MODE_11G] = "11g", 64178955Ssam [IEEE80211_MODE_FH] = "FH", 65178955Ssam [IEEE80211_MODE_TURBO_A] = "turboA", 66178955Ssam [IEEE80211_MODE_TURBO_G] = "turboG", 67178955Ssam [IEEE80211_MODE_STURBO_A] = "sturboA", 68188782Ssam [IEEE80211_MODE_HALF] = "half", 69188782Ssam [IEEE80211_MODE_QUARTER] = "quarter", 70178955Ssam [IEEE80211_MODE_11NA] = "11na", 71178955Ssam [IEEE80211_MODE_11NG] = "11ng", 72116742Ssam}; 73178957Ssam/* map ieee80211_opmode to the corresponding capability bit */ 74178957Ssamconst int ieee80211_opcap[IEEE80211_OPMODE_MAX] = { 75178957Ssam [IEEE80211_M_IBSS] = IEEE80211_C_IBSS, 76178957Ssam [IEEE80211_M_WDS] = IEEE80211_C_WDS, 77178957Ssam [IEEE80211_M_STA] = IEEE80211_C_STA, 78178957Ssam [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO, 79178957Ssam [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP, 80178957Ssam [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR, 81195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 82195618Srpaulo [IEEE80211_M_MBSS] = IEEE80211_C_MBSS, 83195618Srpaulo#endif 84178957Ssam}; 85178957Ssam 86283566Sglebiusconst uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] = 87178354Ssam { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 88116742Ssam 89178354Ssamstatic void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag); 90193655Ssamstatic void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag); 91178354Ssamstatic void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag); 92178354Ssamstatic int ieee80211_media_setup(struct ieee80211com *ic, 93178354Ssam struct ifmedia *media, int caps, int addsta, 94178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat); 95178354Ssamstatic int media_status(enum ieee80211_opmode, 96178354Ssam const struct ieee80211_channel *); 97283568Sglebiusstatic uint64_t ieee80211_get_counter(struct ifnet *, ift_counter); 98178354Ssam 99178354SsamMALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state"); 100178354Ssam 101164645Ssam/* 102164645Ssam * Default supported rates for 802.11 operation (in IEEE .5Mb units). 103164645Ssam */ 104164645Ssam#define B(r) ((r) | IEEE80211_RATE_BASIC) 105164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11a = 106164645Ssam { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } }; 107165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_half = 108165569Ssam { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } }; 109165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_quarter = 110165569Ssam { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } }; 111164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11b = 112164645Ssam { 4, { B(2), B(4), B(11), B(22) } }; 113164645Ssam/* NB: OFDM rates are handled specially based on mode */ 114164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11g = 115164645Ssam { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } }; 116164645Ssam#undef B 117164645Ssam 118140915Ssam/* 119165569Ssam * Fill in 802.11 available channel set, mark 120165569Ssam * all available channels as active, and pick 121165569Ssam * a default channel if not already specified. 122165569Ssam */ 123287197Sglebiusvoid 124165569Ssamieee80211_chan_init(struct ieee80211com *ic) 125116742Ssam{ 126165569Ssam#define DEFAULTRATES(m, def) do { \ 127188782Ssam if (ic->ic_sup_rates[m].rs_nrates == 0) \ 128165574Ssam ic->ic_sup_rates[m] = def; \ 129165569Ssam} while (0) 130116742Ssam struct ieee80211_channel *c; 131116742Ssam int i; 132116742Ssam 133186107Ssam KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX, 134170530Ssam ("invalid number of channels specified: %u", ic->ic_nchans)); 135116742Ssam memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 136178354Ssam memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps)); 137167468Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO); 138170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 139116742Ssam c = &ic->ic_channels[i]; 140170530Ssam KASSERT(c->ic_flags != 0, ("channel with no flags")); 141187796Ssam /* 142187796Ssam * Help drivers that work only with frequencies by filling 143187796Ssam * in IEEE channel #'s if not already calculated. Note this 144187796Ssam * mimics similar work done in ieee80211_setregdomain when 145187796Ssam * changing regulatory state. 146187796Ssam */ 147187796Ssam if (c->ic_ieee == 0) 148187796Ssam c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags); 149187796Ssam if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0) 150187796Ssam c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq + 151187796Ssam (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20), 152187796Ssam c->ic_flags); 153187796Ssam /* default max tx power to max regulatory */ 154187796Ssam if (c->ic_maxpower == 0) 155187796Ssam c->ic_maxpower = 2*c->ic_maxregpower; 156170530Ssam setbit(ic->ic_chan_avail, c->ic_ieee); 157170530Ssam /* 158170530Ssam * Identify mode capabilities. 159170530Ssam */ 160170530Ssam if (IEEE80211_IS_CHAN_A(c)) 161170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11A); 162170530Ssam if (IEEE80211_IS_CHAN_B(c)) 163170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11B); 164170530Ssam if (IEEE80211_IS_CHAN_ANYG(c)) 165170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11G); 166170530Ssam if (IEEE80211_IS_CHAN_FHSS(c)) 167170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_FH); 168170530Ssam if (IEEE80211_IS_CHAN_108A(c)) 169170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A); 170170530Ssam if (IEEE80211_IS_CHAN_108G(c)) 171170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G); 172170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 173170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A); 174188782Ssam if (IEEE80211_IS_CHAN_HALF(c)) 175188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_HALF); 176188782Ssam if (IEEE80211_IS_CHAN_QUARTER(c)) 177188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER); 178170530Ssam if (IEEE80211_IS_CHAN_HTA(c)) 179170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NA); 180170530Ssam if (IEEE80211_IS_CHAN_HTG(c)) 181170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NG); 182116742Ssam } 183170530Ssam /* initialize candidate channels to all available */ 184170530Ssam memcpy(ic->ic_chan_active, ic->ic_chan_avail, 185170530Ssam sizeof(ic->ic_chan_avail)); 186164645Ssam 187178354Ssam /* sort channel table to allow lookup optimizations */ 188178354Ssam ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 189178354Ssam 190178354Ssam /* invalidate any previous state */ 191170530Ssam ic->ic_bsschan = IEEE80211_CHAN_ANYC; 192172233Ssam ic->ic_prevchan = NULL; 193178354Ssam ic->ic_csa_newchan = NULL; 194170530Ssam /* arbitrarily pick the first channel */ 195170530Ssam ic->ic_curchan = &ic->ic_channels[0]; 196190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 197170530Ssam 198164645Ssam /* fillin well-known rate sets if driver has not specified */ 199165569Ssam DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b); 200165569Ssam DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g); 201165569Ssam DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a); 202165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a); 203165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g); 204187897Ssam DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a); 205188782Ssam DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half); 206188782Ssam DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter); 207188774Ssam DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a); 208188774Ssam DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g); 209165569Ssam 210165569Ssam /* 211219596Sbschmidt * Setup required information to fill the mcsset field, if driver did 212219596Sbschmidt * not. Assume a 2T2R setup for historic reasons. 213219596Sbschmidt */ 214219596Sbschmidt if (ic->ic_rxstream == 0) 215219596Sbschmidt ic->ic_rxstream = 2; 216219596Sbschmidt if (ic->ic_txstream == 0) 217219596Sbschmidt ic->ic_txstream = 2; 218219596Sbschmidt 219219596Sbschmidt /* 220165569Ssam * Set auto mode to reset active channel state and any desired channel. 221165569Ssam */ 222165569Ssam (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO); 223165569Ssam#undef DEFAULTRATES 224165569Ssam} 225165569Ssam 226178354Ssamstatic void 227283540Sglebiusnull_update_mcast(struct ieee80211com *ic) 228178354Ssam{ 229283540Sglebius 230283540Sglebius ic_printf(ic, "need multicast update callback\n"); 231178354Ssam} 232178354Ssam 233178354Ssamstatic void 234283540Sglebiusnull_update_promisc(struct ieee80211com *ic) 235178354Ssam{ 236283540Sglebius 237283540Sglebius ic_printf(ic, "need promiscuous mode update callback\n"); 238178354Ssam} 239178354Ssam 240178521Ssamstatic void 241233452Sadriannull_update_chw(struct ieee80211com *ic) 242233452Sadrian{ 243233452Sadrian 244283529Sglebius ic_printf(ic, "%s: need callback\n", __func__); 245233452Sadrian} 246233452Sadrian 247283529Sglebiusint 248283529Sglebiusic_printf(struct ieee80211com *ic, const char * fmt, ...) 249283529Sglebius{ 250283529Sglebius va_list ap; 251283529Sglebius int retval; 252283529Sglebius 253283529Sglebius retval = printf("%s: ", ic->ic_name); 254283529Sglebius va_start(ap, fmt); 255283529Sglebius retval += vprintf(fmt, ap); 256283529Sglebius va_end(ap); 257283529Sglebius return (retval); 258283529Sglebius} 259283529Sglebius 260287197Sglebiusstatic LIST_HEAD(, ieee80211com) ic_head = LIST_HEAD_INITIALIZER(ic_head); 261287197Sglebiusstatic struct mtx ic_list_mtx; 262287197SglebiusMTX_SYSINIT(ic_list, &ic_list_mtx, "ieee80211com list", MTX_DEF); 263287197Sglebius 264287197Sglebiusstatic int 265287197Sglebiussysctl_ieee80211coms(SYSCTL_HANDLER_ARGS) 266287197Sglebius{ 267287197Sglebius struct ieee80211com *ic; 268287197Sglebius struct sbuf *sb; 269287197Sglebius char *sp; 270287197Sglebius int error; 271287197Sglebius 272287197Sglebius sb = sbuf_new_auto(); 273287197Sglebius sp = ""; 274287197Sglebius mtx_lock(&ic_list_mtx); 275287197Sglebius LIST_FOREACH(ic, &ic_head, ic_next) { 276287197Sglebius sbuf_printf(sb, "%s%s", sp, ic->ic_name); 277287197Sglebius sp = " "; 278287197Sglebius } 279287197Sglebius mtx_unlock(&ic_list_mtx); 280287197Sglebius sbuf_finish(sb); 281287197Sglebius error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1); 282287197Sglebius sbuf_delete(sb); 283287197Sglebius return (error); 284287197Sglebius} 285287197Sglebius 286287197SglebiusSYSCTL_PROC(_net_wlan, OID_AUTO, devices, 287287197Sglebius CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, 288287197Sglebius sysctl_ieee80211coms, "A", "names of available 802.11 devices"); 289287197Sglebius 290178354Ssam/* 291178354Ssam * Attach/setup the common net80211 state. Called by 292178354Ssam * the driver on attach to prior to creating any vap's. 293178354Ssam */ 294165569Ssamvoid 295287197Sglebiusieee80211_ifattach(struct ieee80211com *ic) 296165569Ssam{ 297165569Ssam 298283529Sglebius IEEE80211_LOCK_INIT(ic, ic->ic_name); 299283529Sglebius IEEE80211_TX_LOCK_INIT(ic, ic->ic_name); 300178354Ssam TAILQ_INIT(&ic->ic_vaps); 301191746Sthompsa 302191746Sthompsa /* Create a taskqueue for all state changes */ 303191746Sthompsa ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO, 304191746Sthompsa taskqueue_thread_enqueue, &ic->ic_tq); 305230447Sadrian taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq", 306283565Sglebius ic->ic_name); 307283568Sglebius ic->ic_ierrors = counter_u64_alloc(M_WAITOK); 308283568Sglebius ic->ic_oerrors = counter_u64_alloc(M_WAITOK); 309165569Ssam /* 310165569Ssam * Fill in 802.11 available channel set, mark all 311165569Ssam * available channels as active, and pick a default 312165569Ssam * channel if not already specified. 313165569Ssam */ 314287197Sglebius ieee80211_chan_init(ic); 315170530Ssam 316178354Ssam ic->ic_update_mcast = null_update_mcast; 317178354Ssam ic->ic_update_promisc = null_update_promisc; 318233452Sadrian ic->ic_update_chw = null_update_chw; 319116742Ssam 320195379Ssam ic->ic_hash_key = arc4random(); 321155688Ssam ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 322155688Ssam ic->ic_lintval = ic->ic_bintval; 323138568Ssam ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 324138568Ssam 325170530Ssam ieee80211_crypto_attach(ic); 326138568Ssam ieee80211_node_attach(ic); 327170530Ssam ieee80211_power_attach(ic); 328138568Ssam ieee80211_proto_attach(ic); 329190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 330190391Ssam ieee80211_superg_attach(ic); 331190391Ssam#endif 332170530Ssam ieee80211_ht_attach(ic); 333170530Ssam ieee80211_scan_attach(ic); 334178354Ssam ieee80211_regdomain_attach(ic); 335193843Ssam ieee80211_dfs_attach(ic); 336138568Ssam 337178354Ssam ieee80211_sysctl_attach(ic); 338138568Ssam 339287197Sglebius mtx_lock(&ic_list_mtx); 340287197Sglebius LIST_INSERT_HEAD(&ic_head, ic, ic_next); 341287197Sglebius mtx_unlock(&ic_list_mtx); 342116742Ssam} 343116742Ssam 344178354Ssam/* 345178354Ssam * Detach net80211 state on device detach. Tear down 346178354Ssam * all vap's and reclaim all common state prior to the 347178354Ssam * device state going away. Note we may call back into 348178354Ssam * driver; it must be prepared for this. 349178354Ssam */ 350116742Ssamvoid 351138568Ssamieee80211_ifdetach(struct ieee80211com *ic) 352116742Ssam{ 353178354Ssam struct ieee80211vap *vap; 354116742Ssam 355287197Sglebius mtx_lock(&ic_list_mtx); 356287197Sglebius LIST_REMOVE(ic, ic_next); 357287197Sglebius mtx_unlock(&ic_list_mtx); 358193337Ssam 359242149Sadrian /* 360242149Sadrian * The VAP is responsible for setting and clearing 361242149Sadrian * the VIMAGE context. 362242149Sadrian */ 363178354Ssam while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) 364178354Ssam ieee80211_vap_destroy(vap); 365188533Sthompsa ieee80211_waitfor_parent(ic); 366138568Ssam 367138568Ssam ieee80211_sysctl_detach(ic); 368193843Ssam ieee80211_dfs_detach(ic); 369178354Ssam ieee80211_regdomain_detach(ic); 370170530Ssam ieee80211_scan_detach(ic); 371190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 372190391Ssam ieee80211_superg_detach(ic); 373190391Ssam#endif 374170530Ssam ieee80211_ht_detach(ic); 375166012Ssam /* NB: must be called before ieee80211_node_detach */ 376138568Ssam ieee80211_proto_detach(ic); 377138568Ssam ieee80211_crypto_detach(ic); 378170530Ssam ieee80211_power_detach(ic); 379138568Ssam ieee80211_node_detach(ic); 380193337Ssam 381283568Sglebius counter_u64_free(ic->ic_ierrors); 382283568Sglebius counter_u64_free(ic->ic_oerrors); 383242149Sadrian 384191746Sthompsa taskqueue_free(ic->ic_tq); 385248069Sadrian IEEE80211_TX_LOCK_DESTROY(ic); 386170530Ssam IEEE80211_LOCK_DESTROY(ic); 387178354Ssam} 388138568Ssam 389287197Sglebiusstruct ieee80211com * 390287197Sglebiusieee80211_find_com(const char *name) 391287197Sglebius{ 392287197Sglebius struct ieee80211com *ic; 393287197Sglebius 394287197Sglebius mtx_lock(&ic_list_mtx); 395287197Sglebius LIST_FOREACH(ic, &ic_head, ic_next) 396287197Sglebius if (strcmp(ic->ic_name, name) == 0) 397287197Sglebius break; 398287197Sglebius mtx_unlock(&ic_list_mtx); 399287197Sglebius 400287197Sglebius return (ic); 401287197Sglebius} 402287197Sglebius 403178354Ssam/* 404178354Ssam * Default reset method for use with the ioctl support. This 405178354Ssam * method is invoked after any state change in the 802.11 406178354Ssam * layer that should be propagated to the hardware but not 407178354Ssam * require re-initialization of the 802.11 state machine (e.g 408178354Ssam * rescanning for an ap). We always return ENETRESET which 409178354Ssam * should cause the driver to re-initialize the device. Drivers 410178354Ssam * can override this method to implement more optimized support. 411178354Ssam */ 412178354Ssamstatic int 413178354Ssamdefault_reset(struct ieee80211vap *vap, u_long cmd) 414178354Ssam{ 415178354Ssam return ENETRESET; 416178354Ssam} 417178354Ssam 418178354Ssam/* 419283568Sglebius * Add underlying device errors to vap errors. 420283568Sglebius */ 421283568Sglebiusstatic uint64_t 422283568Sglebiusieee80211_get_counter(struct ifnet *ifp, ift_counter cnt) 423283568Sglebius{ 424283568Sglebius struct ieee80211vap *vap = ifp->if_softc; 425283568Sglebius struct ieee80211com *ic = vap->iv_ic; 426283568Sglebius uint64_t rv; 427283568Sglebius 428283568Sglebius rv = if_get_counter_default(ifp, cnt); 429283568Sglebius switch (cnt) { 430283568Sglebius case IFCOUNTER_OERRORS: 431283568Sglebius rv += counter_u64_fetch(ic->ic_oerrors); 432283568Sglebius break; 433283568Sglebius case IFCOUNTER_IERRORS: 434283568Sglebius rv += counter_u64_fetch(ic->ic_ierrors); 435283568Sglebius break; 436283568Sglebius default: 437283568Sglebius break; 438283568Sglebius } 439283568Sglebius 440283568Sglebius return (rv); 441283568Sglebius} 442283568Sglebius 443283568Sglebius/* 444178354Ssam * Prepare a vap for use. Drivers use this call to 445178354Ssam * setup net80211 state in new vap's prior attaching 446178354Ssam * them with ieee80211_vap_attach (below). 447178354Ssam */ 448178354Ssamint 449178354Ssamieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, 450228621Sbschmidt const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, 451287197Sglebius int flags, const uint8_t bssid[IEEE80211_ADDR_LEN]) 452178354Ssam{ 453178354Ssam struct ifnet *ifp; 454178354Ssam 455178354Ssam ifp = if_alloc(IFT_ETHER); 456178354Ssam if (ifp == NULL) { 457283529Sglebius ic_printf(ic, "%s: unable to allocate ifnet\n", 458178354Ssam __func__); 459178354Ssam return ENOMEM; 460178354Ssam } 461178354Ssam if_initname(ifp, name, unit); 462178354Ssam ifp->if_softc = vap; /* back pointer */ 463178354Ssam ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 464254082Sadrian ifp->if_transmit = ieee80211_vap_transmit; 465254082Sadrian ifp->if_qflush = ieee80211_vap_qflush; 466178354Ssam ifp->if_ioctl = ieee80211_ioctl; 467178354Ssam ifp->if_init = ieee80211_init; 468283568Sglebius ifp->if_get_counter = ieee80211_get_counter; 469178354Ssam 470178354Ssam vap->iv_ifp = ifp; 471178354Ssam vap->iv_ic = ic; 472178354Ssam vap->iv_flags = ic->ic_flags; /* propagate common flags */ 473178354Ssam vap->iv_flags_ext = ic->ic_flags_ext; 474178354Ssam vap->iv_flags_ven = ic->ic_flags_ven; 475178354Ssam vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 476178354Ssam vap->iv_htcaps = ic->ic_htcaps; 477205513Srpaulo vap->iv_htextcaps = ic->ic_htextcaps; 478178354Ssam vap->iv_opmode = opmode; 479178957Ssam vap->iv_caps |= ieee80211_opcap[opmode]; 480287197Sglebius vap->iv_myaddr = ic->ic_macaddr; 481178354Ssam switch (opmode) { 482178354Ssam case IEEE80211_M_WDS: 483178354Ssam /* 484178354Ssam * WDS links must specify the bssid of the far end. 485178354Ssam * For legacy operation this is a static relationship. 486178354Ssam * For non-legacy operation the station must associate 487178354Ssam * and be authorized to pass traffic. Plumbing the 488178354Ssam * vap to the proper node happens when the vap 489178354Ssam * transitions to RUN state. 490178354Ssam */ 491178354Ssam IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 492178354Ssam vap->iv_flags |= IEEE80211_F_DESBSSID; 493178354Ssam if (flags & IEEE80211_CLONE_WDSLEGACY) 494178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 495178354Ssam break; 496186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 497186904Ssam case IEEE80211_M_AHDEMO: 498186904Ssam if (flags & IEEE80211_CLONE_TDMA) { 499186904Ssam /* NB: checked before clone operation allowed */ 500186904Ssam KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 501186904Ssam ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 502186904Ssam /* 503186904Ssam * Propagate TDMA capability to mark vap; this 504186904Ssam * cannot be removed and is used to distinguish 505186904Ssam * regular ahdemo operation from ahdemo+tdma. 506186904Ssam */ 507186904Ssam vap->iv_caps |= IEEE80211_C_TDMA; 508186904Ssam } 509186904Ssam break; 510186904Ssam#endif 511228621Sbschmidt default: 512228621Sbschmidt break; 513178354Ssam } 514184278Ssam /* auto-enable s/w beacon miss support */ 515184278Ssam if (flags & IEEE80211_CLONE_NOBEACONS) 516184278Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 517202612Sthompsa /* auto-generated or user supplied MAC address */ 518202612Sthompsa if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR)) 519202612Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC; 520178354Ssam /* 521178354Ssam * Enable various functionality by default if we're 522178354Ssam * capable; the driver can override us if it knows better. 523178354Ssam */ 524178354Ssam if (vap->iv_caps & IEEE80211_C_WME) 525178354Ssam vap->iv_flags |= IEEE80211_F_WME; 526178354Ssam if (vap->iv_caps & IEEE80211_C_BURST) 527178354Ssam vap->iv_flags |= IEEE80211_F_BURST; 528178354Ssam /* NB: bg scanning only makes sense for station mode right now */ 529178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 530178354Ssam (vap->iv_caps & IEEE80211_C_BGSCAN)) 531178354Ssam vap->iv_flags |= IEEE80211_F_BGSCAN; 532178957Ssam vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 533178954Ssam /* NB: DFS support only makes sense for ap mode right now */ 534178954Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 535178954Ssam (vap->iv_caps & IEEE80211_C_DFS)) 536178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 537178354Ssam 538178354Ssam vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 539178354Ssam vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 540178354Ssam vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 541178354Ssam /* 542178354Ssam * Install a default reset method for the ioctl support; 543178354Ssam * the driver can override this. 544178354Ssam */ 545178354Ssam vap->iv_reset = default_reset; 546178354Ssam 547178354Ssam ieee80211_sysctl_vattach(vap); 548178354Ssam ieee80211_crypto_vattach(vap); 549178354Ssam ieee80211_node_vattach(vap); 550178354Ssam ieee80211_power_vattach(vap); 551178354Ssam ieee80211_proto_vattach(vap); 552190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 553190391Ssam ieee80211_superg_vattach(vap); 554190391Ssam#endif 555178354Ssam ieee80211_ht_vattach(vap); 556178354Ssam ieee80211_scan_vattach(vap); 557178354Ssam ieee80211_regdomain_vattach(vap); 558192468Ssam ieee80211_radiotap_vattach(vap); 559214894Sbschmidt ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE); 560178354Ssam 561178354Ssam return 0; 562178354Ssam} 563178354Ssam 564178354Ssam/* 565178354Ssam * Activate a vap. State should have been prepared with a 566178354Ssam * call to ieee80211_vap_setup and by the driver. On return 567178354Ssam * from this call the vap is ready for use. 568178354Ssam */ 569178354Ssamint 570287197Sglebiusieee80211_vap_attach(struct ieee80211vap *vap, ifm_change_cb_t media_change, 571287197Sglebius ifm_stat_cb_t media_stat, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 572178354Ssam{ 573178354Ssam struct ifnet *ifp = vap->iv_ifp; 574178354Ssam struct ieee80211com *ic = vap->iv_ic; 575178354Ssam struct ifmediareq imr; 576178354Ssam int maxrate; 577178354Ssam 578178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 579178354Ssam "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 580178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 581283529Sglebius ic->ic_name, vap->iv_flags, vap->iv_flags_ext); 582178354Ssam 583178354Ssam /* 584178354Ssam * Do late attach work that cannot happen until after 585178354Ssam * the driver has had a chance to override defaults. 586178354Ssam */ 587178354Ssam ieee80211_node_latevattach(vap); 588178354Ssam ieee80211_power_latevattach(vap); 589178354Ssam 590178354Ssam maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 591178354Ssam vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 592178354Ssam ieee80211_media_status(ifp, &imr); 593178354Ssam /* NB: strip explicit mode; we're actually in autoselect */ 594188106Ssam ifmedia_set(&vap->iv_media, 595188106Ssam imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 596178354Ssam if (maxrate) 597178354Ssam ifp->if_baudrate = IF_Mbps(maxrate); 598178354Ssam 599287197Sglebius ether_ifattach(ifp, macaddr); 600287197Sglebius vap->iv_myaddr = IF_LLADDR(ifp); 601269778Sadrian /* hook output method setup by ether_ifattach */ 602269778Sadrian vap->iv_output = ifp->if_output; 603269778Sadrian ifp->if_output = ieee80211_output; 604178354Ssam /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 605178354Ssam 606178354Ssam IEEE80211_LOCK(ic); 607178354Ssam TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 608178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 609190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 610178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 611190391Ssam#endif 612178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 613178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 614193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 615193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 616178354Ssam IEEE80211_UNLOCK(ic); 617178354Ssam 618178354Ssam return 1; 619178354Ssam} 620178354Ssam 621178354Ssam/* 622178354Ssam * Tear down vap state and reclaim the ifnet. 623178354Ssam * The driver is assumed to have prepared for 624178354Ssam * this; e.g. by turning off interrupts for the 625178354Ssam * underlying device. 626178354Ssam */ 627178354Ssamvoid 628178354Ssamieee80211_vap_detach(struct ieee80211vap *vap) 629178354Ssam{ 630178354Ssam struct ieee80211com *ic = vap->iv_ic; 631178354Ssam struct ifnet *ifp = vap->iv_ifp; 632178354Ssam 633242149Sadrian CURVNET_SET(ifp->if_vnet); 634242149Sadrian 635178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 636283565Sglebius __func__, ieee80211_opmode_name[vap->iv_opmode], ic->ic_name); 637178354Ssam 638193312Ssam /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 639193312Ssam ether_ifdetach(ifp); 640178354Ssam 641193312Ssam ieee80211_stop(vap); 642193312Ssam 643191746Sthompsa /* 644191746Sthompsa * Flush any deferred vap tasks. 645191746Sthompsa */ 646191746Sthompsa ieee80211_draintask(ic, &vap->iv_nstate_task); 647191746Sthompsa ieee80211_draintask(ic, &vap->iv_swbmiss_task); 648191746Sthompsa 649196159Ssam /* XXX band-aid until ifnet handles this for us */ 650196159Ssam taskqueue_drain(taskqueue_swi, &ifp->if_linktask); 651196159Ssam 652191746Sthompsa IEEE80211_LOCK(ic); 653191746Sthompsa KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 654178354Ssam TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 655178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 656190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 657178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 658190391Ssam#endif 659178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 660178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 661193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 662193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 663192468Ssam /* NB: this handles the bpfdetach done below */ 664192468Ssam ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 665287197Sglebius if (vap->iv_ifflags & IFF_PROMISC) 666287197Sglebius ieee80211_promisc(vap, false); 667287197Sglebius if (vap->iv_ifflags & IFF_ALLMULTI) 668287197Sglebius ieee80211_allmulti(vap, false); 669178354Ssam IEEE80211_UNLOCK(ic); 670178354Ssam 671178354Ssam ifmedia_removeall(&vap->iv_media); 672178354Ssam 673192468Ssam ieee80211_radiotap_vdetach(vap); 674178354Ssam ieee80211_regdomain_vdetach(vap); 675178354Ssam ieee80211_scan_vdetach(vap); 676190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 677190391Ssam ieee80211_superg_vdetach(vap); 678190391Ssam#endif 679178354Ssam ieee80211_ht_vdetach(vap); 680178354Ssam /* NB: must be before ieee80211_node_vdetach */ 681178354Ssam ieee80211_proto_vdetach(vap); 682178354Ssam ieee80211_crypto_vdetach(vap); 683178354Ssam ieee80211_power_vdetach(vap); 684178354Ssam ieee80211_node_vdetach(vap); 685178354Ssam ieee80211_sysctl_vdetach(vap); 686182674Sweongyo 687182674Sweongyo if_free(ifp); 688242149Sadrian 689242149Sadrian CURVNET_RESTORE(); 690116742Ssam} 691116742Ssam 692178354Ssam/* 693287197Sglebius * Count number of vaps in promisc, and issue promisc on 694287197Sglebius * parent respectively. 695178354Ssam */ 696178354Ssamvoid 697287197Sglebiusieee80211_promisc(struct ieee80211vap *vap, bool on) 698178354Ssam{ 699287197Sglebius struct ieee80211com *ic = vap->iv_ic; 700178354Ssam 701287197Sglebius /* 702287197Sglebius * XXX the bridge sets PROMISC but we don't want to 703287197Sglebius * enable it on the device, discard here so all the 704287197Sglebius * drivers don't need to special-case it 705287197Sglebius */ 706287197Sglebius if (!(vap->iv_opmode == IEEE80211_M_MONITOR || 707287197Sglebius (vap->iv_opmode == IEEE80211_M_AHDEMO && 708287197Sglebius (vap->iv_caps & IEEE80211_C_TDMA) == 0))) 709287197Sglebius return; 710178354Ssam 711287197Sglebius IEEE80211_LOCK(ic); 712287197Sglebius if (on) { 713287197Sglebius if (++ic->ic_promisc == 1) 714287197Sglebius ieee80211_runtask(ic, &ic->ic_promisc_task); 715287197Sglebius } else { 716287197Sglebius KASSERT(ic->ic_promisc > 0, ("%s: ic %p not promisc", 717287197Sglebius __func__, ic)); 718287197Sglebius if (--ic->ic_promisc == 0) 719287197Sglebius ieee80211_runtask(ic, &ic->ic_promisc_task); 720178354Ssam } 721287197Sglebius IEEE80211_UNLOCK(ic); 722178354Ssam} 723178354Ssam 724178354Ssam/* 725287197Sglebius * Count number of vaps in allmulti, and issue allmulti on 726287197Sglebius * parent respectively. 727287197Sglebius */ 728287197Sglebiusvoid 729287197Sglebiusieee80211_allmulti(struct ieee80211vap *vap, bool on) 730287197Sglebius{ 731287197Sglebius struct ieee80211com *ic = vap->iv_ic; 732287197Sglebius 733287197Sglebius IEEE80211_LOCK(ic); 734287197Sglebius if (on) { 735287197Sglebius if (++ic->ic_allmulti == 1) 736287197Sglebius ieee80211_runtask(ic, &ic->ic_mcast_task); 737287197Sglebius } else { 738287197Sglebius KASSERT(ic->ic_allmulti > 0, ("%s: ic %p not allmulti", 739287197Sglebius __func__, ic)); 740287197Sglebius if (--ic->ic_allmulti == 0) 741287197Sglebius ieee80211_runtask(ic, &ic->ic_mcast_task); 742287197Sglebius } 743287197Sglebius IEEE80211_UNLOCK(ic); 744287197Sglebius} 745287197Sglebius 746287197Sglebius/* 747178354Ssam * Synchronize flag bit state in the com structure 748178354Ssam * according to the state of all vap's. This is used, 749178354Ssam * for example, to handle state changes via ioctls. 750178354Ssam */ 751178354Ssamstatic void 752178354Ssamieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 753178354Ssam{ 754178354Ssam struct ieee80211vap *vap; 755178354Ssam int bit; 756178354Ssam 757178354Ssam IEEE80211_LOCK_ASSERT(ic); 758178354Ssam 759178354Ssam bit = 0; 760178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 761178354Ssam if (vap->iv_flags & flag) { 762178354Ssam bit = 1; 763178354Ssam break; 764178354Ssam } 765178354Ssam if (bit) 766178354Ssam ic->ic_flags |= flag; 767178354Ssam else 768178354Ssam ic->ic_flags &= ~flag; 769178354Ssam} 770178354Ssam 771178354Ssamvoid 772178354Ssamieee80211_syncflag(struct ieee80211vap *vap, int flag) 773178354Ssam{ 774178354Ssam struct ieee80211com *ic = vap->iv_ic; 775178354Ssam 776178354Ssam IEEE80211_LOCK(ic); 777178354Ssam if (flag < 0) { 778178354Ssam flag = -flag; 779178354Ssam vap->iv_flags &= ~flag; 780178354Ssam } else 781178354Ssam vap->iv_flags |= flag; 782178354Ssam ieee80211_syncflag_locked(ic, flag); 783178354Ssam IEEE80211_UNLOCK(ic); 784178354Ssam} 785178354Ssam 786178354Ssam/* 787193655Ssam * Synchronize flags_ht bit state in the com structure 788178354Ssam * according to the state of all vap's. This is used, 789178354Ssam * for example, to handle state changes via ioctls. 790178354Ssam */ 791178354Ssamstatic void 792193655Ssamieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 793193655Ssam{ 794193655Ssam struct ieee80211vap *vap; 795193655Ssam int bit; 796193655Ssam 797193655Ssam IEEE80211_LOCK_ASSERT(ic); 798193655Ssam 799193655Ssam bit = 0; 800193655Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 801193655Ssam if (vap->iv_flags_ht & flag) { 802193655Ssam bit = 1; 803193655Ssam break; 804193655Ssam } 805193655Ssam if (bit) 806193655Ssam ic->ic_flags_ht |= flag; 807193655Ssam else 808193655Ssam ic->ic_flags_ht &= ~flag; 809193655Ssam} 810193655Ssam 811193655Ssamvoid 812193655Ssamieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 813193655Ssam{ 814193655Ssam struct ieee80211com *ic = vap->iv_ic; 815193655Ssam 816193655Ssam IEEE80211_LOCK(ic); 817193655Ssam if (flag < 0) { 818193655Ssam flag = -flag; 819193655Ssam vap->iv_flags_ht &= ~flag; 820193655Ssam } else 821193655Ssam vap->iv_flags_ht |= flag; 822193655Ssam ieee80211_syncflag_ht_locked(ic, flag); 823193655Ssam IEEE80211_UNLOCK(ic); 824193655Ssam} 825193655Ssam 826193655Ssam/* 827193655Ssam * Synchronize flags_ext bit state in the com structure 828193655Ssam * according to the state of all vap's. This is used, 829193655Ssam * for example, to handle state changes via ioctls. 830193655Ssam */ 831193655Ssamstatic void 832178354Ssamieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 833178354Ssam{ 834178354Ssam struct ieee80211vap *vap; 835178354Ssam int bit; 836178354Ssam 837178354Ssam IEEE80211_LOCK_ASSERT(ic); 838178354Ssam 839178354Ssam bit = 0; 840178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 841178354Ssam if (vap->iv_flags_ext & flag) { 842178354Ssam bit = 1; 843178354Ssam break; 844178354Ssam } 845178354Ssam if (bit) 846178354Ssam ic->ic_flags_ext |= flag; 847178354Ssam else 848178354Ssam ic->ic_flags_ext &= ~flag; 849178354Ssam} 850178354Ssam 851178354Ssamvoid 852178354Ssamieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 853178354Ssam{ 854178354Ssam struct ieee80211com *ic = vap->iv_ic; 855178354Ssam 856178354Ssam IEEE80211_LOCK(ic); 857178354Ssam if (flag < 0) { 858178354Ssam flag = -flag; 859178354Ssam vap->iv_flags_ext &= ~flag; 860178354Ssam } else 861178354Ssam vap->iv_flags_ext |= flag; 862178354Ssam ieee80211_syncflag_ext_locked(ic, flag); 863178354Ssam IEEE80211_UNLOCK(ic); 864178354Ssam} 865178354Ssam 866166012Ssamstatic __inline int 867166012Ssammapgsm(u_int freq, u_int flags) 868166012Ssam{ 869166012Ssam freq *= 10; 870166012Ssam if (flags & IEEE80211_CHAN_QUARTER) 871166012Ssam freq += 5; 872166012Ssam else if (flags & IEEE80211_CHAN_HALF) 873166012Ssam freq += 10; 874166012Ssam else 875166012Ssam freq += 20; 876166012Ssam /* NB: there is no 907/20 wide but leave room */ 877166012Ssam return (freq - 906*10) / 5; 878166012Ssam} 879166012Ssam 880166012Ssamstatic __inline int 881166012Ssammappsb(u_int freq, u_int flags) 882166012Ssam{ 883166012Ssam return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 884166012Ssam} 885166012Ssam 886116742Ssam/* 887116742Ssam * Convert MHz frequency to IEEE channel number. 888116742Ssam */ 889152450Ssamint 890116742Ssamieee80211_mhz2ieee(u_int freq, u_int flags) 891116742Ssam{ 892167430Ssam#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 893166012Ssam if (flags & IEEE80211_CHAN_GSM) 894166012Ssam return mapgsm(freq, flags); 895116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 896116742Ssam if (freq == 2484) 897116742Ssam return 14; 898116742Ssam if (freq < 2484) 899152450Ssam return ((int) freq - 2407) / 5; 900116742Ssam else 901116742Ssam return 15 + ((freq - 2512) / 20); 902116899Ssam } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 903165569Ssam if (freq <= 5000) { 904170530Ssam /* XXX check regdomain? */ 905167430Ssam if (IS_FREQ_IN_PSB(freq)) 906166012Ssam return mappsb(freq, flags); 907152450Ssam return (freq - 4000) / 5; 908165569Ssam } else 909152450Ssam return (freq - 5000) / 5; 910116742Ssam } else { /* either, guess */ 911116742Ssam if (freq == 2484) 912116742Ssam return 14; 913166012Ssam if (freq < 2484) { 914166012Ssam if (907 <= freq && freq <= 922) 915166012Ssam return mapgsm(freq, flags); 916152450Ssam return ((int) freq - 2407) / 5; 917166012Ssam } 918152450Ssam if (freq < 5000) { 919167430Ssam if (IS_FREQ_IN_PSB(freq)) 920166012Ssam return mappsb(freq, flags); 921165569Ssam else if (freq > 4900) 922152450Ssam return (freq - 4000) / 5; 923152450Ssam else 924152450Ssam return 15 + ((freq - 2512) / 20); 925152450Ssam } 926116742Ssam return (freq - 5000) / 5; 927116742Ssam } 928167430Ssam#undef IS_FREQ_IN_PSB 929116742Ssam} 930116742Ssam 931116742Ssam/* 932116742Ssam * Convert channel to IEEE channel number. 933116742Ssam */ 934152450Ssamint 935165825Smjacobieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 936116742Ssam{ 937170530Ssam if (c == NULL) { 938283529Sglebius ic_printf(ic, "invalid channel (NULL)\n"); 939117039Ssam return 0; /* XXX */ 940116742Ssam } 941170530Ssam return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 942116742Ssam} 943116742Ssam 944116742Ssam/* 945116742Ssam * Convert IEEE channel number to MHz frequency. 946116742Ssam */ 947116742Ssamu_int 948116742Ssamieee80211_ieee2mhz(u_int chan, u_int flags) 949116742Ssam{ 950166012Ssam if (flags & IEEE80211_CHAN_GSM) 951166012Ssam return 907 + 5 * (chan / 10); 952116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 953116742Ssam if (chan == 14) 954116742Ssam return 2484; 955116742Ssam if (chan < 14) 956116742Ssam return 2407 + chan*5; 957116742Ssam else 958116742Ssam return 2512 + ((chan-15)*20); 959116742Ssam } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 960165569Ssam if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 961165569Ssam chan -= 37; 962165569Ssam return 4940 + chan*5 + (chan % 5 ? 2 : 0); 963165569Ssam } 964116742Ssam return 5000 + (chan*5); 965116742Ssam } else { /* either, guess */ 966166012Ssam /* XXX can't distinguish PSB+GSM channels */ 967116742Ssam if (chan == 14) 968116742Ssam return 2484; 969116742Ssam if (chan < 14) /* 0-13 */ 970116742Ssam return 2407 + chan*5; 971116742Ssam if (chan < 27) /* 15-26 */ 972116742Ssam return 2512 + ((chan-15)*20); 973116742Ssam return 5000 + (chan*5); 974116742Ssam } 975116742Ssam} 976116742Ssam 977116742Ssam/* 978170530Ssam * Locate a channel given a frequency+flags. We cache 979178354Ssam * the previous lookup to optimize switching between two 980170530Ssam * channels--as happens with dynamic turbo. 981170530Ssam */ 982170530Ssamstruct ieee80211_channel * 983170530Ssamieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 984170530Ssam{ 985170530Ssam struct ieee80211_channel *c; 986170530Ssam int i; 987170530Ssam 988170530Ssam flags &= IEEE80211_CHAN_ALLTURBO; 989170530Ssam c = ic->ic_prevchan; 990170530Ssam if (c != NULL && c->ic_freq == freq && 991170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 992170530Ssam return c; 993170530Ssam /* brute force search */ 994170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 995170530Ssam c = &ic->ic_channels[i]; 996170530Ssam if (c->ic_freq == freq && 997170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 998170530Ssam return c; 999170530Ssam } 1000170530Ssam return NULL; 1001170530Ssam} 1002170530Ssam 1003173861Ssam/* 1004173861Ssam * Locate a channel given a channel number+flags. We cache 1005173861Ssam * the previous lookup to optimize switching between two 1006173861Ssam * channels--as happens with dynamic turbo. 1007173861Ssam */ 1008173861Ssamstruct ieee80211_channel * 1009173861Ssamieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 1010173861Ssam{ 1011173861Ssam struct ieee80211_channel *c; 1012173861Ssam int i; 1013173861Ssam 1014173861Ssam flags &= IEEE80211_CHAN_ALLTURBO; 1015173861Ssam c = ic->ic_prevchan; 1016173861Ssam if (c != NULL && c->ic_ieee == ieee && 1017173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1018173861Ssam return c; 1019173861Ssam /* brute force search */ 1020173861Ssam for (i = 0; i < ic->ic_nchans; i++) { 1021173861Ssam c = &ic->ic_channels[i]; 1022173861Ssam if (c->ic_ieee == ieee && 1023173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 1024173861Ssam return c; 1025173861Ssam } 1026173861Ssam return NULL; 1027173861Ssam} 1028173861Ssam 1029283535Sadrian/* 1030283535Sadrian * Lookup a channel suitable for the given rx status. 1031283535Sadrian * 1032283535Sadrian * This is used to find a channel for a frame (eg beacon, probe 1033283535Sadrian * response) based purely on the received PHY information. 1034283535Sadrian * 1035283535Sadrian * For now it tries to do it based on R_FREQ / R_IEEE. 1036283535Sadrian * This is enough for 11bg and 11a (and thus 11ng/11na) 1037283535Sadrian * but it will not be enough for GSM, PSB channels and the 1038283535Sadrian * like. It also doesn't know about legacy-turbog and 1039283535Sadrian * legacy-turbo modes, which some offload NICs actually 1040283535Sadrian * support in weird ways. 1041283535Sadrian * 1042283535Sadrian * Takes the ic and rxstatus; returns the channel or NULL 1043283535Sadrian * if not found. 1044283535Sadrian * 1045283535Sadrian * XXX TODO: Add support for that when the need arises. 1046283535Sadrian */ 1047283535Sadrianstruct ieee80211_channel * 1048283535Sadrianieee80211_lookup_channel_rxstatus(struct ieee80211vap *vap, 1049283535Sadrian const struct ieee80211_rx_stats *rxs) 1050283535Sadrian{ 1051283535Sadrian struct ieee80211com *ic = vap->iv_ic; 1052283535Sadrian uint32_t flags; 1053283535Sadrian struct ieee80211_channel *c; 1054283535Sadrian 1055283535Sadrian if (rxs == NULL) 1056283535Sadrian return (NULL); 1057283535Sadrian 1058283535Sadrian /* 1059283535Sadrian * Strictly speaking we only use freq for now, 1060283535Sadrian * however later on we may wish to just store 1061283535Sadrian * the ieee for verification. 1062283535Sadrian */ 1063283535Sadrian if ((rxs->r_flags & IEEE80211_R_FREQ) == 0) 1064283535Sadrian return (NULL); 1065283535Sadrian if ((rxs->r_flags & IEEE80211_R_IEEE) == 0) 1066283535Sadrian return (NULL); 1067283535Sadrian 1068283535Sadrian /* 1069283535Sadrian * If the rx status contains a valid ieee/freq, then 1070283535Sadrian * ensure we populate the correct channel information 1071283535Sadrian * in rxchan before passing it up to the scan infrastructure. 1072283535Sadrian * Offload NICs will pass up beacons from all channels 1073283535Sadrian * during background scans. 1074283535Sadrian */ 1075283535Sadrian 1076283535Sadrian /* Determine a band */ 1077283535Sadrian /* XXX should be done by the driver? */ 1078283535Sadrian if (rxs->c_freq < 3000) { 1079284014Sadrian flags = IEEE80211_CHAN_G; 1080283535Sadrian } else { 1081283535Sadrian flags = IEEE80211_CHAN_A; 1082283535Sadrian } 1083283535Sadrian 1084283535Sadrian /* Channel lookup */ 1085283535Sadrian c = ieee80211_find_channel(ic, rxs->c_freq, flags); 1086283535Sadrian 1087283535Sadrian IEEE80211_DPRINTF(vap, IEEE80211_MSG_INPUT, 1088283535Sadrian "%s: freq=%d, ieee=%d, flags=0x%08x; c=%p\n", 1089283535Sadrian __func__, 1090283535Sadrian (int) rxs->c_freq, 1091283535Sadrian (int) rxs->c_ieee, 1092283535Sadrian flags, 1093283535Sadrian c); 1094283535Sadrian 1095283535Sadrian return (c); 1096283535Sadrian} 1097283535Sadrian 1098170530Ssamstatic void 1099178354Ssamaddmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 1100170530Ssam{ 1101170530Ssam#define ADD(_ic, _s, _o) \ 1102178354Ssam ifmedia_add(media, \ 1103170530Ssam IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 1104170530Ssam static const u_int mopts[IEEE80211_MODE_MAX] = { 1105188106Ssam [IEEE80211_MODE_AUTO] = IFM_AUTO, 1106188106Ssam [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 1107188106Ssam [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 1108188106Ssam [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 1109188106Ssam [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 1110188106Ssam [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1111188106Ssam [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 1112188106Ssam [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1113188782Ssam [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 1114188782Ssam [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 1115188106Ssam [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 1116188106Ssam [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 1117170530Ssam }; 1118170530Ssam u_int mopt; 1119170530Ssam 1120170530Ssam mopt = mopts[mode]; 1121178354Ssam if (addsta) 1122178354Ssam ADD(ic, mword, mopt); /* STA mode has no cap */ 1123178354Ssam if (caps & IEEE80211_C_IBSS) 1124178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 1125178354Ssam if (caps & IEEE80211_C_HOSTAP) 1126178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 1127178354Ssam if (caps & IEEE80211_C_AHDEMO) 1128178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 1129178354Ssam if (caps & IEEE80211_C_MONITOR) 1130178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 1131178354Ssam if (caps & IEEE80211_C_WDS) 1132178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_WDS); 1133195618Srpaulo if (caps & IEEE80211_C_MBSS) 1134195618Srpaulo ADD(media, mword, mopt | IFM_IEEE80211_MBSS); 1135170530Ssam#undef ADD 1136170530Ssam} 1137170530Ssam 1138170530Ssam/* 1139116742Ssam * Setup the media data structures according to the channel and 1140178354Ssam * rate tables. 1141116742Ssam */ 1142178354Ssamstatic int 1143178354Ssamieee80211_media_setup(struct ieee80211com *ic, 1144178354Ssam struct ifmedia *media, int caps, int addsta, 1145116742Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 1146116742Ssam{ 1147228621Sbschmidt int i, j, rate, maxrate, mword, r; 1148228621Sbschmidt enum ieee80211_phymode mode; 1149170530Ssam const struct ieee80211_rateset *rs; 1150116742Ssam struct ieee80211_rateset allrates; 1151116742Ssam 1152118887Ssam /* 1153116742Ssam * Fill in media characteristics. 1154116742Ssam */ 1155178354Ssam ifmedia_init(media, 0, media_change, media_stat); 1156116742Ssam maxrate = 0; 1157170530Ssam /* 1158170530Ssam * Add media for legacy operating modes. 1159170530Ssam */ 1160116742Ssam memset(&allrates, 0, sizeof(allrates)); 1161170530Ssam for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 1162167468Ssam if (isclr(ic->ic_modecaps, mode)) 1163116742Ssam continue; 1164178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1165116742Ssam if (mode == IEEE80211_MODE_AUTO) 1166116742Ssam continue; 1167116742Ssam rs = &ic->ic_sup_rates[mode]; 1168116742Ssam for (i = 0; i < rs->rs_nrates; i++) { 1169116742Ssam rate = rs->rs_rates[i]; 1170116742Ssam mword = ieee80211_rate2media(ic, rate, mode); 1171116742Ssam if (mword == 0) 1172116742Ssam continue; 1173178354Ssam addmedia(media, caps, addsta, mode, mword); 1174116742Ssam /* 1175170530Ssam * Add legacy rate to the collection of all rates. 1176116742Ssam */ 1177116742Ssam r = rate & IEEE80211_RATE_VAL; 1178116742Ssam for (j = 0; j < allrates.rs_nrates; j++) 1179116742Ssam if (allrates.rs_rates[j] == r) 1180116742Ssam break; 1181116742Ssam if (j == allrates.rs_nrates) { 1182116742Ssam /* unique, add to the set */ 1183116742Ssam allrates.rs_rates[j] = r; 1184116742Ssam allrates.rs_nrates++; 1185116742Ssam } 1186116742Ssam rate = (rate & IEEE80211_RATE_VAL) / 2; 1187116742Ssam if (rate > maxrate) 1188116742Ssam maxrate = rate; 1189116742Ssam } 1190116742Ssam } 1191116742Ssam for (i = 0; i < allrates.rs_nrates; i++) { 1192116742Ssam mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1193116742Ssam IEEE80211_MODE_AUTO); 1194116742Ssam if (mword == 0) 1195116742Ssam continue; 1196170530Ssam /* NB: remove media options from mword */ 1197178354Ssam addmedia(media, caps, addsta, 1198178354Ssam IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1199116742Ssam } 1200170530Ssam /* 1201170530Ssam * Add HT/11n media. Note that we do not have enough 1202170530Ssam * bits in the media subtype to express the MCS so we 1203170530Ssam * use a "placeholder" media subtype and any fixed MCS 1204170530Ssam * must be specified with a different mechanism. 1205170530Ssam */ 1206188782Ssam for (; mode <= IEEE80211_MODE_11NG; mode++) { 1207170530Ssam if (isclr(ic->ic_modecaps, mode)) 1208170530Ssam continue; 1209178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1210178354Ssam addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1211170530Ssam } 1212170530Ssam if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1213170530Ssam isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1214178354Ssam addmedia(media, caps, addsta, 1215178354Ssam IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1216219599Sbschmidt i = ic->ic_txstream * 8 - 1; 1217219599Sbschmidt if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) && 1218219599Sbschmidt (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) 1219219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_400ns; 1220219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40)) 1221219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_800ns; 1222219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20)) 1223219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_400ns; 1224219599Sbschmidt else 1225219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_800ns; 1226219599Sbschmidt if (rate > maxrate) 1227219599Sbschmidt maxrate = rate; 1228170530Ssam } 1229178354Ssam return maxrate; 1230178354Ssam} 1231116742Ssam 1232188782Ssam/* XXX inline or eliminate? */ 1233165569Ssamconst struct ieee80211_rateset * 1234165569Ssamieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1235165569Ssam{ 1236188774Ssam /* XXX does this work for 11ng basic rates? */ 1237170530Ssam return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1238165569Ssam} 1239165569Ssam 1240138568Ssamvoid 1241138568Ssamieee80211_announce(struct ieee80211com *ic) 1242138568Ssam{ 1243228621Sbschmidt int i, rate, mword; 1244228621Sbschmidt enum ieee80211_phymode mode; 1245170530Ssam const struct ieee80211_rateset *rs; 1246138568Ssam 1247172227Ssam /* NB: skip AUTO since it has no rates */ 1248172227Ssam for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1249167468Ssam if (isclr(ic->ic_modecaps, mode)) 1250138568Ssam continue; 1251283529Sglebius ic_printf(ic, "%s rates: ", ieee80211_phymode_name[mode]); 1252138568Ssam rs = &ic->ic_sup_rates[mode]; 1253138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 1254170530Ssam mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1255138568Ssam if (mword == 0) 1256138568Ssam continue; 1257170530Ssam rate = ieee80211_media2rate(mword); 1258138568Ssam printf("%s%d%sMbps", (i != 0 ? " " : ""), 1259170530Ssam rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1260138568Ssam } 1261138568Ssam printf("\n"); 1262138568Ssam } 1263170530Ssam ieee80211_ht_announce(ic); 1264138568Ssam} 1265138568Ssam 1266170530Ssamvoid 1267170530Ssamieee80211_announce_channels(struct ieee80211com *ic) 1268116742Ssam{ 1269170530Ssam const struct ieee80211_channel *c; 1270170530Ssam char type; 1271170530Ssam int i, cw; 1272170530Ssam 1273170530Ssam printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1274170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 1275170530Ssam c = &ic->ic_channels[i]; 1276170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 1277170530Ssam type = 'S'; 1278170530Ssam else if (IEEE80211_IS_CHAN_108A(c)) 1279170530Ssam type = 'T'; 1280170530Ssam else if (IEEE80211_IS_CHAN_108G(c)) 1281170530Ssam type = 'G'; 1282170530Ssam else if (IEEE80211_IS_CHAN_HT(c)) 1283170530Ssam type = 'n'; 1284170530Ssam else if (IEEE80211_IS_CHAN_A(c)) 1285170530Ssam type = 'a'; 1286170530Ssam else if (IEEE80211_IS_CHAN_ANYG(c)) 1287170530Ssam type = 'g'; 1288170530Ssam else if (IEEE80211_IS_CHAN_B(c)) 1289170530Ssam type = 'b'; 1290170530Ssam else 1291170530Ssam type = 'f'; 1292170530Ssam if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1293170530Ssam cw = 40; 1294170530Ssam else if (IEEE80211_IS_CHAN_HALF(c)) 1295170530Ssam cw = 10; 1296170530Ssam else if (IEEE80211_IS_CHAN_QUARTER(c)) 1297170530Ssam cw = 5; 1298170530Ssam else 1299170530Ssam cw = 20; 1300170530Ssam printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 1301170530Ssam , c->ic_ieee, c->ic_freq, type 1302170530Ssam , cw 1303170530Ssam , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 1304170530Ssam IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 1305170530Ssam , c->ic_maxregpower 1306170530Ssam , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 1307170530Ssam , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 1308170530Ssam ); 1309170530Ssam } 1310116742Ssam} 1311116742Ssam 1312170530Ssamstatic int 1313184273Ssammedia2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 1314170530Ssam{ 1315116742Ssam switch (IFM_MODE(ime->ifm_media)) { 1316116742Ssam case IFM_IEEE80211_11A: 1317178354Ssam *mode = IEEE80211_MODE_11A; 1318116742Ssam break; 1319116742Ssam case IFM_IEEE80211_11B: 1320178354Ssam *mode = IEEE80211_MODE_11B; 1321116742Ssam break; 1322116742Ssam case IFM_IEEE80211_11G: 1323178354Ssam *mode = IEEE80211_MODE_11G; 1324116742Ssam break; 1325124543Sonoe case IFM_IEEE80211_FH: 1326178354Ssam *mode = IEEE80211_MODE_FH; 1327124543Sonoe break; 1328170530Ssam case IFM_IEEE80211_11NA: 1329178354Ssam *mode = IEEE80211_MODE_11NA; 1330170530Ssam break; 1331170530Ssam case IFM_IEEE80211_11NG: 1332178354Ssam *mode = IEEE80211_MODE_11NG; 1333170530Ssam break; 1334116742Ssam case IFM_AUTO: 1335178354Ssam *mode = IEEE80211_MODE_AUTO; 1336116742Ssam break; 1337116742Ssam default: 1338178354Ssam return 0; 1339116742Ssam } 1340116742Ssam /* 1341138568Ssam * Turbo mode is an ``option''. 1342138568Ssam * XXX does not apply to AUTO 1343116742Ssam */ 1344116742Ssam if (ime->ifm_media & IFM_IEEE80211_TURBO) { 1345178354Ssam if (*mode == IEEE80211_MODE_11A) { 1346184273Ssam if (flags & IEEE80211_F_TURBOP) 1347178354Ssam *mode = IEEE80211_MODE_TURBO_A; 1348170530Ssam else 1349178354Ssam *mode = IEEE80211_MODE_STURBO_A; 1350178354Ssam } else if (*mode == IEEE80211_MODE_11G) 1351178354Ssam *mode = IEEE80211_MODE_TURBO_G; 1352138568Ssam else 1353178354Ssam return 0; 1354116742Ssam } 1355170530Ssam /* XXX HT40 +/- */ 1356178354Ssam return 1; 1357178354Ssam} 1358116742Ssam 1359178354Ssam/* 1360178354Ssam * Handle a media change request on the vap interface. 1361178354Ssam */ 1362178354Ssamint 1363178354Ssamieee80211_media_change(struct ifnet *ifp) 1364178354Ssam{ 1365178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1366178354Ssam struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 1367184273Ssam uint16_t newmode; 1368178354Ssam 1369184273Ssam if (!media2mode(ime, vap->iv_flags, &newmode)) 1370178354Ssam return EINVAL; 1371184273Ssam if (vap->iv_des_mode != newmode) { 1372184273Ssam vap->iv_des_mode = newmode; 1373193340Ssam /* XXX kick state machine if up+running */ 1374178354Ssam } 1375178354Ssam return 0; 1376116742Ssam} 1377116742Ssam 1378170530Ssam/* 1379170530Ssam * Common code to calculate the media status word 1380170530Ssam * from the operating mode and channel state. 1381170530Ssam */ 1382170530Ssamstatic int 1383170530Ssammedia_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 1384170530Ssam{ 1385170530Ssam int status; 1386170530Ssam 1387170530Ssam status = IFM_IEEE80211; 1388170530Ssam switch (opmode) { 1389170530Ssam case IEEE80211_M_STA: 1390170530Ssam break; 1391170530Ssam case IEEE80211_M_IBSS: 1392170530Ssam status |= IFM_IEEE80211_ADHOC; 1393170530Ssam break; 1394170530Ssam case IEEE80211_M_HOSTAP: 1395170530Ssam status |= IFM_IEEE80211_HOSTAP; 1396170530Ssam break; 1397170530Ssam case IEEE80211_M_MONITOR: 1398170530Ssam status |= IFM_IEEE80211_MONITOR; 1399170530Ssam break; 1400170530Ssam case IEEE80211_M_AHDEMO: 1401170530Ssam status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1402170530Ssam break; 1403170530Ssam case IEEE80211_M_WDS: 1404178354Ssam status |= IFM_IEEE80211_WDS; 1405170530Ssam break; 1406195618Srpaulo case IEEE80211_M_MBSS: 1407195618Srpaulo status |= IFM_IEEE80211_MBSS; 1408195618Srpaulo break; 1409170530Ssam } 1410170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) { 1411170530Ssam status |= IFM_IEEE80211_11NA; 1412170530Ssam } else if (IEEE80211_IS_CHAN_HTG(chan)) { 1413170530Ssam status |= IFM_IEEE80211_11NG; 1414170530Ssam } else if (IEEE80211_IS_CHAN_A(chan)) { 1415170530Ssam status |= IFM_IEEE80211_11A; 1416170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 1417170530Ssam status |= IFM_IEEE80211_11B; 1418170530Ssam } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 1419170530Ssam status |= IFM_IEEE80211_11G; 1420170530Ssam } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 1421170530Ssam status |= IFM_IEEE80211_FH; 1422170530Ssam } 1423170530Ssam /* XXX else complain? */ 1424170530Ssam 1425170530Ssam if (IEEE80211_IS_CHAN_TURBO(chan)) 1426170530Ssam status |= IFM_IEEE80211_TURBO; 1427178354Ssam#if 0 1428178354Ssam if (IEEE80211_IS_CHAN_HT20(chan)) 1429178354Ssam status |= IFM_IEEE80211_HT20; 1430178354Ssam if (IEEE80211_IS_CHAN_HT40(chan)) 1431178354Ssam status |= IFM_IEEE80211_HT40; 1432178354Ssam#endif 1433170530Ssam return status; 1434170530Ssam} 1435170530Ssam 1436116742Ssamvoid 1437116742Ssamieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1438116742Ssam{ 1439178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1440178354Ssam struct ieee80211com *ic = vap->iv_ic; 1441170530Ssam enum ieee80211_phymode mode; 1442116742Ssam 1443116742Ssam imr->ifm_status = IFM_AVALID; 1444170530Ssam /* 1445170530Ssam * NB: use the current channel's mode to lock down a xmit 1446170530Ssam * rate only when running; otherwise we may have a mismatch 1447170530Ssam * in which case the rate will not be convertible. 1448170530Ssam */ 1449264843Sadrian if (vap->iv_state == IEEE80211_S_RUN || 1450264843Sadrian vap->iv_state == IEEE80211_S_SLEEP) { 1451116742Ssam imr->ifm_status |= IFM_ACTIVE; 1452170530Ssam mode = ieee80211_chan2mode(ic->ic_curchan); 1453170530Ssam } else 1454170530Ssam mode = IEEE80211_MODE_AUTO; 1455178354Ssam imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 1456138568Ssam /* 1457138568Ssam * Calculate a current rate if possible. 1458138568Ssam */ 1459178354Ssam if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 1460138568Ssam /* 1461138568Ssam * A fixed rate is set, report that. 1462138568Ssam */ 1463138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1464178354Ssam vap->iv_txparms[mode].ucastrate, mode); 1465178354Ssam } else if (vap->iv_opmode == IEEE80211_M_STA) { 1466138568Ssam /* 1467138568Ssam * In station mode report the current transmit rate. 1468138568Ssam */ 1469138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1470178354Ssam vap->iv_bss->ni_txrate, mode); 1471128966Sandre } else 1472138568Ssam imr->ifm_active |= IFM_AUTO; 1473178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1474178354Ssam imr->ifm_current = imr->ifm_active; 1475116742Ssam} 1476116742Ssam 1477116742Ssam/* 1478116742Ssam * Set the current phy mode and recalculate the active channel 1479116742Ssam * set based on the available channels for this mode. Also 1480116742Ssam * select a new default/current channel if the current one is 1481116742Ssam * inappropriate for this mode. 1482116742Ssam */ 1483116742Ssamint 1484116742Ssamieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 1485116742Ssam{ 1486116742Ssam /* 1487166012Ssam * Adjust basic rates in 11b/11g supported rate set. 1488166012Ssam * Note that if operating on a hal/quarter rate channel 1489166012Ssam * this is a noop as those rates sets are different 1490166012Ssam * and used instead. 1491116742Ssam */ 1492166012Ssam if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 1493178354Ssam ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 1494166012Ssam 1495116742Ssam ic->ic_curmode = mode; 1496138568Ssam ieee80211_reset_erp(ic); /* reset ERP state */ 1497138568Ssam 1498116742Ssam return 0; 1499116742Ssam} 1500116742Ssam 1501116742Ssam/* 1502170530Ssam * Return the phy mode for with the specified channel. 1503116742Ssam */ 1504116742Ssamenum ieee80211_phymode 1505170530Ssamieee80211_chan2mode(const struct ieee80211_channel *chan) 1506116742Ssam{ 1507170530Ssam 1508170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) 1509170530Ssam return IEEE80211_MODE_11NA; 1510170530Ssam else if (IEEE80211_IS_CHAN_HTG(chan)) 1511170530Ssam return IEEE80211_MODE_11NG; 1512170530Ssam else if (IEEE80211_IS_CHAN_108G(chan)) 1513170530Ssam return IEEE80211_MODE_TURBO_G; 1514170530Ssam else if (IEEE80211_IS_CHAN_ST(chan)) 1515170530Ssam return IEEE80211_MODE_STURBO_A; 1516170530Ssam else if (IEEE80211_IS_CHAN_TURBO(chan)) 1517153350Ssam return IEEE80211_MODE_TURBO_A; 1518188782Ssam else if (IEEE80211_IS_CHAN_HALF(chan)) 1519188782Ssam return IEEE80211_MODE_HALF; 1520188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(chan)) 1521188782Ssam return IEEE80211_MODE_QUARTER; 1522170530Ssam else if (IEEE80211_IS_CHAN_A(chan)) 1523116742Ssam return IEEE80211_MODE_11A; 1524170530Ssam else if (IEEE80211_IS_CHAN_ANYG(chan)) 1525116742Ssam return IEEE80211_MODE_11G; 1526170530Ssam else if (IEEE80211_IS_CHAN_B(chan)) 1527116742Ssam return IEEE80211_MODE_11B; 1528170530Ssam else if (IEEE80211_IS_CHAN_FHSS(chan)) 1529170530Ssam return IEEE80211_MODE_FH; 1530170530Ssam 1531170530Ssam /* NB: should not get here */ 1532170530Ssam printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 1533170530Ssam __func__, chan->ic_freq, chan->ic_flags); 1534170530Ssam return IEEE80211_MODE_11B; 1535116742Ssam} 1536116742Ssam 1537170530Ssamstruct ratemedia { 1538170530Ssam u_int match; /* rate + mode */ 1539170530Ssam u_int media; /* if_media rate */ 1540170530Ssam}; 1541170530Ssam 1542170530Ssamstatic int 1543170530Ssamfindmedia(const struct ratemedia rates[], int n, u_int match) 1544170530Ssam{ 1545170530Ssam int i; 1546170530Ssam 1547170530Ssam for (i = 0; i < n; i++) 1548170530Ssam if (rates[i].match == match) 1549170530Ssam return rates[i].media; 1550170530Ssam return IFM_AUTO; 1551170530Ssam} 1552170530Ssam 1553116742Ssam/* 1554170530Ssam * Convert IEEE80211 rate value to ifmedia subtype. 1555170530Ssam * Rate is either a legacy rate in units of 0.5Mbps 1556170530Ssam * or an MCS index. 1557116742Ssam */ 1558116742Ssamint 1559116742Ssamieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 1560116742Ssam{ 1561170530Ssam static const struct ratemedia rates[] = { 1562124543Sonoe { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 1563124543Sonoe { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 1564124543Sonoe { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 1565124543Sonoe { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 1566124543Sonoe { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 1567124543Sonoe { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 1568124543Sonoe { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 1569124543Sonoe { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 1570124543Sonoe { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 1571124543Sonoe { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 1572124543Sonoe { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 1573124543Sonoe { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 1574124543Sonoe { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 1575124543Sonoe { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 1576124543Sonoe { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 1577124543Sonoe { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 1578124543Sonoe { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 1579124543Sonoe { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 1580124543Sonoe { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 1581124543Sonoe { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 1582124543Sonoe { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 1583124543Sonoe { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 1584124543Sonoe { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 1585124543Sonoe { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1586124543Sonoe { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1587124543Sonoe { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1588124543Sonoe { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1589165569Ssam { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 1590165569Ssam { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 1591165569Ssam { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 1592116742Ssam /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1593116742Ssam }; 1594170530Ssam static const struct ratemedia htrates[] = { 1595170530Ssam { 0, IFM_IEEE80211_MCS }, 1596170530Ssam { 1, IFM_IEEE80211_MCS }, 1597170530Ssam { 2, IFM_IEEE80211_MCS }, 1598170530Ssam { 3, IFM_IEEE80211_MCS }, 1599170530Ssam { 4, IFM_IEEE80211_MCS }, 1600170530Ssam { 5, IFM_IEEE80211_MCS }, 1601170530Ssam { 6, IFM_IEEE80211_MCS }, 1602170530Ssam { 7, IFM_IEEE80211_MCS }, 1603170530Ssam { 8, IFM_IEEE80211_MCS }, 1604170530Ssam { 9, IFM_IEEE80211_MCS }, 1605170530Ssam { 10, IFM_IEEE80211_MCS }, 1606170530Ssam { 11, IFM_IEEE80211_MCS }, 1607170530Ssam { 12, IFM_IEEE80211_MCS }, 1608170530Ssam { 13, IFM_IEEE80211_MCS }, 1609170530Ssam { 14, IFM_IEEE80211_MCS }, 1610170530Ssam { 15, IFM_IEEE80211_MCS }, 1611219456Sbschmidt { 16, IFM_IEEE80211_MCS }, 1612219456Sbschmidt { 17, IFM_IEEE80211_MCS }, 1613219456Sbschmidt { 18, IFM_IEEE80211_MCS }, 1614219456Sbschmidt { 19, IFM_IEEE80211_MCS }, 1615219456Sbschmidt { 20, IFM_IEEE80211_MCS }, 1616219456Sbschmidt { 21, IFM_IEEE80211_MCS }, 1617219456Sbschmidt { 22, IFM_IEEE80211_MCS }, 1618219456Sbschmidt { 23, IFM_IEEE80211_MCS }, 1619219456Sbschmidt { 24, IFM_IEEE80211_MCS }, 1620219456Sbschmidt { 25, IFM_IEEE80211_MCS }, 1621219456Sbschmidt { 26, IFM_IEEE80211_MCS }, 1622219456Sbschmidt { 27, IFM_IEEE80211_MCS }, 1623219456Sbschmidt { 28, IFM_IEEE80211_MCS }, 1624219456Sbschmidt { 29, IFM_IEEE80211_MCS }, 1625219456Sbschmidt { 30, IFM_IEEE80211_MCS }, 1626219456Sbschmidt { 31, IFM_IEEE80211_MCS }, 1627219456Sbschmidt { 32, IFM_IEEE80211_MCS }, 1628219456Sbschmidt { 33, IFM_IEEE80211_MCS }, 1629219456Sbschmidt { 34, IFM_IEEE80211_MCS }, 1630219456Sbschmidt { 35, IFM_IEEE80211_MCS }, 1631219456Sbschmidt { 36, IFM_IEEE80211_MCS }, 1632219456Sbschmidt { 37, IFM_IEEE80211_MCS }, 1633219456Sbschmidt { 38, IFM_IEEE80211_MCS }, 1634219456Sbschmidt { 39, IFM_IEEE80211_MCS }, 1635219456Sbschmidt { 40, IFM_IEEE80211_MCS }, 1636219456Sbschmidt { 41, IFM_IEEE80211_MCS }, 1637219456Sbschmidt { 42, IFM_IEEE80211_MCS }, 1638219456Sbschmidt { 43, IFM_IEEE80211_MCS }, 1639219456Sbschmidt { 44, IFM_IEEE80211_MCS }, 1640219456Sbschmidt { 45, IFM_IEEE80211_MCS }, 1641219456Sbschmidt { 46, IFM_IEEE80211_MCS }, 1642219456Sbschmidt { 47, IFM_IEEE80211_MCS }, 1643219456Sbschmidt { 48, IFM_IEEE80211_MCS }, 1644219456Sbschmidt { 49, IFM_IEEE80211_MCS }, 1645219456Sbschmidt { 50, IFM_IEEE80211_MCS }, 1646219456Sbschmidt { 51, IFM_IEEE80211_MCS }, 1647219456Sbschmidt { 52, IFM_IEEE80211_MCS }, 1648219456Sbschmidt { 53, IFM_IEEE80211_MCS }, 1649219456Sbschmidt { 54, IFM_IEEE80211_MCS }, 1650219456Sbschmidt { 55, IFM_IEEE80211_MCS }, 1651219456Sbschmidt { 56, IFM_IEEE80211_MCS }, 1652219456Sbschmidt { 57, IFM_IEEE80211_MCS }, 1653219456Sbschmidt { 58, IFM_IEEE80211_MCS }, 1654219456Sbschmidt { 59, IFM_IEEE80211_MCS }, 1655219456Sbschmidt { 60, IFM_IEEE80211_MCS }, 1656219456Sbschmidt { 61, IFM_IEEE80211_MCS }, 1657219456Sbschmidt { 62, IFM_IEEE80211_MCS }, 1658219456Sbschmidt { 63, IFM_IEEE80211_MCS }, 1659219456Sbschmidt { 64, IFM_IEEE80211_MCS }, 1660219456Sbschmidt { 65, IFM_IEEE80211_MCS }, 1661219456Sbschmidt { 66, IFM_IEEE80211_MCS }, 1662219456Sbschmidt { 67, IFM_IEEE80211_MCS }, 1663219456Sbschmidt { 68, IFM_IEEE80211_MCS }, 1664219456Sbschmidt { 69, IFM_IEEE80211_MCS }, 1665219456Sbschmidt { 70, IFM_IEEE80211_MCS }, 1666219456Sbschmidt { 71, IFM_IEEE80211_MCS }, 1667219456Sbschmidt { 72, IFM_IEEE80211_MCS }, 1668219456Sbschmidt { 73, IFM_IEEE80211_MCS }, 1669219456Sbschmidt { 74, IFM_IEEE80211_MCS }, 1670219456Sbschmidt { 75, IFM_IEEE80211_MCS }, 1671219456Sbschmidt { 76, IFM_IEEE80211_MCS }, 1672170530Ssam }; 1673170530Ssam int m; 1674116742Ssam 1675170530Ssam /* 1676170530Ssam * Check 11n rates first for match as an MCS. 1677170530Ssam */ 1678170530Ssam if (mode == IEEE80211_MODE_11NA) { 1679172226Ssam if (rate & IEEE80211_RATE_MCS) { 1680172226Ssam rate &= ~IEEE80211_RATE_MCS; 1681254315Srpaulo m = findmedia(htrates, nitems(htrates), rate); 1682170530Ssam if (m != IFM_AUTO) 1683170530Ssam return m | IFM_IEEE80211_11NA; 1684170530Ssam } 1685170530Ssam } else if (mode == IEEE80211_MODE_11NG) { 1686170530Ssam /* NB: 12 is ambiguous, it will be treated as an MCS */ 1687172226Ssam if (rate & IEEE80211_RATE_MCS) { 1688172226Ssam rate &= ~IEEE80211_RATE_MCS; 1689254315Srpaulo m = findmedia(htrates, nitems(htrates), rate); 1690170530Ssam if (m != IFM_AUTO) 1691170530Ssam return m | IFM_IEEE80211_11NG; 1692170530Ssam } 1693170530Ssam } 1694170530Ssam rate &= IEEE80211_RATE_VAL; 1695116742Ssam switch (mode) { 1696116742Ssam case IEEE80211_MODE_11A: 1697188782Ssam case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 1698188782Ssam case IEEE80211_MODE_QUARTER: 1699170530Ssam case IEEE80211_MODE_11NA: 1700138568Ssam case IEEE80211_MODE_TURBO_A: 1701170530Ssam case IEEE80211_MODE_STURBO_A: 1702254315Srpaulo return findmedia(rates, nitems(rates), 1703254315Srpaulo rate | IFM_IEEE80211_11A); 1704116742Ssam case IEEE80211_MODE_11B: 1705254315Srpaulo return findmedia(rates, nitems(rates), 1706254315Srpaulo rate | IFM_IEEE80211_11B); 1707124543Sonoe case IEEE80211_MODE_FH: 1708254315Srpaulo return findmedia(rates, nitems(rates), 1709254315Srpaulo rate | IFM_IEEE80211_FH); 1710116742Ssam case IEEE80211_MODE_AUTO: 1711116742Ssam /* NB: ic may be NULL for some drivers */ 1712188775Ssam if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 1713254315Srpaulo return findmedia(rates, nitems(rates), 1714170530Ssam rate | IFM_IEEE80211_FH); 1715116742Ssam /* NB: hack, 11g matches both 11b+11a rates */ 1716116742Ssam /* fall thru... */ 1717116742Ssam case IEEE80211_MODE_11G: 1718170530Ssam case IEEE80211_MODE_11NG: 1719138568Ssam case IEEE80211_MODE_TURBO_G: 1720254315Srpaulo return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11G); 1721116742Ssam } 1722116742Ssam return IFM_AUTO; 1723116742Ssam} 1724116742Ssam 1725116742Ssamint 1726116742Ssamieee80211_media2rate(int mword) 1727116742Ssam{ 1728116742Ssam static const int ieeerates[] = { 1729116742Ssam -1, /* IFM_AUTO */ 1730116742Ssam 0, /* IFM_MANUAL */ 1731116742Ssam 0, /* IFM_NONE */ 1732116742Ssam 2, /* IFM_IEEE80211_FH1 */ 1733116742Ssam 4, /* IFM_IEEE80211_FH2 */ 1734116742Ssam 2, /* IFM_IEEE80211_DS1 */ 1735116742Ssam 4, /* IFM_IEEE80211_DS2 */ 1736116742Ssam 11, /* IFM_IEEE80211_DS5 */ 1737116742Ssam 22, /* IFM_IEEE80211_DS11 */ 1738116742Ssam 44, /* IFM_IEEE80211_DS22 */ 1739116742Ssam 12, /* IFM_IEEE80211_OFDM6 */ 1740116742Ssam 18, /* IFM_IEEE80211_OFDM9 */ 1741116742Ssam 24, /* IFM_IEEE80211_OFDM12 */ 1742116742Ssam 36, /* IFM_IEEE80211_OFDM18 */ 1743116742Ssam 48, /* IFM_IEEE80211_OFDM24 */ 1744116742Ssam 72, /* IFM_IEEE80211_OFDM36 */ 1745116742Ssam 96, /* IFM_IEEE80211_OFDM48 */ 1746116742Ssam 108, /* IFM_IEEE80211_OFDM54 */ 1747116742Ssam 144, /* IFM_IEEE80211_OFDM72 */ 1748165569Ssam 0, /* IFM_IEEE80211_DS354k */ 1749165569Ssam 0, /* IFM_IEEE80211_DS512k */ 1750165569Ssam 6, /* IFM_IEEE80211_OFDM3 */ 1751165569Ssam 9, /* IFM_IEEE80211_OFDM4 */ 1752165569Ssam 54, /* IFM_IEEE80211_OFDM27 */ 1753170530Ssam -1, /* IFM_IEEE80211_MCS */ 1754116742Ssam }; 1755254315Srpaulo return IFM_SUBTYPE(mword) < nitems(ieeerates) ? 1756116742Ssam ieeerates[IFM_SUBTYPE(mword)] : 0; 1757116742Ssam} 1758195379Ssam 1759195379Ssam/* 1760195379Ssam * The following hash function is adapted from "Hash Functions" by Bob Jenkins 1761195379Ssam * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). 1762195379Ssam */ 1763195379Ssam#define mix(a, b, c) \ 1764195379Ssamdo { \ 1765195379Ssam a -= b; a -= c; a ^= (c >> 13); \ 1766195379Ssam b -= c; b -= a; b ^= (a << 8); \ 1767195379Ssam c -= a; c -= b; c ^= (b >> 13); \ 1768195379Ssam a -= b; a -= c; a ^= (c >> 12); \ 1769195379Ssam b -= c; b -= a; b ^= (a << 16); \ 1770195379Ssam c -= a; c -= b; c ^= (b >> 5); \ 1771195379Ssam a -= b; a -= c; a ^= (c >> 3); \ 1772195379Ssam b -= c; b -= a; b ^= (a << 10); \ 1773195379Ssam c -= a; c -= b; c ^= (b >> 15); \ 1774195379Ssam} while (/*CONSTCOND*/0) 1775195379Ssam 1776195379Ssamuint32_t 1777195379Ssamieee80211_mac_hash(const struct ieee80211com *ic, 1778195379Ssam const uint8_t addr[IEEE80211_ADDR_LEN]) 1779195379Ssam{ 1780195379Ssam uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; 1781195379Ssam 1782195379Ssam b += addr[5] << 8; 1783195379Ssam b += addr[4]; 1784195379Ssam a += addr[3] << 24; 1785195379Ssam a += addr[2] << 16; 1786195379Ssam a += addr[1] << 8; 1787195379Ssam a += addr[0]; 1788195379Ssam 1789195379Ssam mix(a, b, c); 1790195379Ssam 1791195379Ssam return c; 1792195379Ssam} 1793195379Ssam#undef mix 1794276757Sadrian 1795276757Sadrianchar 1796276757Sadrianieee80211_channel_type_char(const struct ieee80211_channel *c) 1797276757Sadrian{ 1798276757Sadrian if (IEEE80211_IS_CHAN_ST(c)) 1799276757Sadrian return 'S'; 1800276757Sadrian if (IEEE80211_IS_CHAN_108A(c)) 1801276757Sadrian return 'T'; 1802276757Sadrian if (IEEE80211_IS_CHAN_108G(c)) 1803276757Sadrian return 'G'; 1804276757Sadrian if (IEEE80211_IS_CHAN_HT(c)) 1805276757Sadrian return 'n'; 1806276757Sadrian if (IEEE80211_IS_CHAN_A(c)) 1807276757Sadrian return 'a'; 1808276757Sadrian if (IEEE80211_IS_CHAN_ANYG(c)) 1809276757Sadrian return 'g'; 1810276757Sadrian if (IEEE80211_IS_CHAN_B(c)) 1811276757Sadrian return 'b'; 1812276757Sadrian return 'f'; 1813276757Sadrian} 1814