ieee80211.c revision 193843
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 193843 2009-06-09 17:11:41Z sam $"); 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> 38182742Sbrooks 39116742Ssam#include <sys/socket.h> 40116742Ssam 41116742Ssam#include <net/if.h> 42178354Ssam#include <net/if_dl.h> 43116742Ssam#include <net/if_media.h> 44178354Ssam#include <net/if_types.h> 45116742Ssam#include <net/ethernet.h> 46116742Ssam 47116742Ssam#include <net80211/ieee80211_var.h> 48178354Ssam#include <net80211/ieee80211_regdomain.h> 49190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 50190391Ssam#include <net80211/ieee80211_superg.h> 51190391Ssam#endif 52116742Ssam 53116742Ssam#include <net/bpf.h> 54116742Ssam 55178955Ssamconst char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = { 56178955Ssam [IEEE80211_MODE_AUTO] = "auto", 57178955Ssam [IEEE80211_MODE_11A] = "11a", 58178955Ssam [IEEE80211_MODE_11B] = "11b", 59178955Ssam [IEEE80211_MODE_11G] = "11g", 60178955Ssam [IEEE80211_MODE_FH] = "FH", 61178955Ssam [IEEE80211_MODE_TURBO_A] = "turboA", 62178955Ssam [IEEE80211_MODE_TURBO_G] = "turboG", 63178955Ssam [IEEE80211_MODE_STURBO_A] = "sturboA", 64188782Ssam [IEEE80211_MODE_HALF] = "half", 65188782Ssam [IEEE80211_MODE_QUARTER] = "quarter", 66178955Ssam [IEEE80211_MODE_11NA] = "11na", 67178955Ssam [IEEE80211_MODE_11NG] = "11ng", 68116742Ssam}; 69178957Ssam/* map ieee80211_opmode to the corresponding capability bit */ 70178957Ssamconst int ieee80211_opcap[IEEE80211_OPMODE_MAX] = { 71178957Ssam [IEEE80211_M_IBSS] = IEEE80211_C_IBSS, 72178957Ssam [IEEE80211_M_WDS] = IEEE80211_C_WDS, 73178957Ssam [IEEE80211_M_STA] = IEEE80211_C_STA, 74178957Ssam [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO, 75178957Ssam [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP, 76178957Ssam [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR, 77178957Ssam}; 78178957Ssam 79178354Ssamstatic const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] = 80178354Ssam { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 81116742Ssam 82178354Ssamstatic void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag); 83193655Ssamstatic void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag); 84178354Ssamstatic void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag); 85178354Ssamstatic int ieee80211_media_setup(struct ieee80211com *ic, 86178354Ssam struct ifmedia *media, int caps, int addsta, 87178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat); 88178354Ssamstatic void ieee80211com_media_status(struct ifnet *, struct ifmediareq *); 89178354Ssamstatic int ieee80211com_media_change(struct ifnet *); 90178354Ssamstatic int media_status(enum ieee80211_opmode, 91178354Ssam const struct ieee80211_channel *); 92178354Ssam 93178354SsamMALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state"); 94178354Ssam 95164645Ssam/* 96164645Ssam * Default supported rates for 802.11 operation (in IEEE .5Mb units). 97164645Ssam */ 98164645Ssam#define B(r) ((r) | IEEE80211_RATE_BASIC) 99164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11a = 100164645Ssam { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } }; 101165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_half = 102165569Ssam { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } }; 103165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_quarter = 104165569Ssam { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } }; 105164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11b = 106164645Ssam { 4, { B(2), B(4), B(11), B(22) } }; 107164645Ssam/* NB: OFDM rates are handled specially based on mode */ 108164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11g = 109164645Ssam { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } }; 110164645Ssam#undef B 111164645Ssam 112140915Ssam/* 113165569Ssam * Fill in 802.11 available channel set, mark 114165569Ssam * all available channels as active, and pick 115165569Ssam * a default channel if not already specified. 116165569Ssam */ 117165569Ssamstatic void 118165569Ssamieee80211_chan_init(struct ieee80211com *ic) 119116742Ssam{ 120165569Ssam#define DEFAULTRATES(m, def) do { \ 121188782Ssam if (ic->ic_sup_rates[m].rs_nrates == 0) \ 122165574Ssam ic->ic_sup_rates[m] = def; \ 123165569Ssam} while (0) 124116742Ssam struct ieee80211_channel *c; 125116742Ssam int i; 126116742Ssam 127186107Ssam KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX, 128170530Ssam ("invalid number of channels specified: %u", ic->ic_nchans)); 129116742Ssam memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 130178354Ssam memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps)); 131167468Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO); 132170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 133116742Ssam c = &ic->ic_channels[i]; 134170530Ssam KASSERT(c->ic_flags != 0, ("channel with no flags")); 135187796Ssam /* 136187796Ssam * Help drivers that work only with frequencies by filling 137187796Ssam * in IEEE channel #'s if not already calculated. Note this 138187796Ssam * mimics similar work done in ieee80211_setregdomain when 139187796Ssam * changing regulatory state. 140187796Ssam */ 141187796Ssam if (c->ic_ieee == 0) 142187796Ssam c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags); 143187796Ssam if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0) 144187796Ssam c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq + 145187796Ssam (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20), 146187796Ssam c->ic_flags); 147187796Ssam /* default max tx power to max regulatory */ 148187796Ssam if (c->ic_maxpower == 0) 149187796Ssam c->ic_maxpower = 2*c->ic_maxregpower; 150170530Ssam setbit(ic->ic_chan_avail, c->ic_ieee); 151170530Ssam /* 152170530Ssam * Identify mode capabilities. 153170530Ssam */ 154170530Ssam if (IEEE80211_IS_CHAN_A(c)) 155170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11A); 156170530Ssam if (IEEE80211_IS_CHAN_B(c)) 157170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11B); 158170530Ssam if (IEEE80211_IS_CHAN_ANYG(c)) 159170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11G); 160170530Ssam if (IEEE80211_IS_CHAN_FHSS(c)) 161170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_FH); 162170530Ssam if (IEEE80211_IS_CHAN_108A(c)) 163170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A); 164170530Ssam if (IEEE80211_IS_CHAN_108G(c)) 165170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G); 166170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 167170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A); 168188782Ssam if (IEEE80211_IS_CHAN_HALF(c)) 169188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_HALF); 170188782Ssam if (IEEE80211_IS_CHAN_QUARTER(c)) 171188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER); 172170530Ssam if (IEEE80211_IS_CHAN_HTA(c)) 173170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NA); 174170530Ssam if (IEEE80211_IS_CHAN_HTG(c)) 175170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NG); 176116742Ssam } 177170530Ssam /* initialize candidate channels to all available */ 178170530Ssam memcpy(ic->ic_chan_active, ic->ic_chan_avail, 179170530Ssam sizeof(ic->ic_chan_avail)); 180164645Ssam 181178354Ssam /* sort channel table to allow lookup optimizations */ 182178354Ssam ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 183178354Ssam 184178354Ssam /* invalidate any previous state */ 185170530Ssam ic->ic_bsschan = IEEE80211_CHAN_ANYC; 186172233Ssam ic->ic_prevchan = NULL; 187178354Ssam ic->ic_csa_newchan = NULL; 188170530Ssam /* arbitrarily pick the first channel */ 189170530Ssam ic->ic_curchan = &ic->ic_channels[0]; 190190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 191170530Ssam 192164645Ssam /* fillin well-known rate sets if driver has not specified */ 193165569Ssam DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b); 194165569Ssam DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g); 195165569Ssam DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a); 196165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a); 197165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g); 198187897Ssam DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a); 199188782Ssam DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half); 200188782Ssam DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter); 201188774Ssam DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a); 202188774Ssam DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g); 203165569Ssam 204165569Ssam /* 205165569Ssam * Set auto mode to reset active channel state and any desired channel. 206165569Ssam */ 207165569Ssam (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO); 208165569Ssam#undef DEFAULTRATES 209165569Ssam} 210165569Ssam 211178354Ssamstatic void 212178354Ssamnull_update_mcast(struct ifnet *ifp) 213178354Ssam{ 214178354Ssam if_printf(ifp, "need multicast update callback\n"); 215178354Ssam} 216178354Ssam 217178354Ssamstatic void 218178354Ssamnull_update_promisc(struct ifnet *ifp) 219178354Ssam{ 220178354Ssam if_printf(ifp, "need promiscuous mode update callback\n"); 221178354Ssam} 222178354Ssam 223178521Ssamstatic int 224178521Ssamnull_output(struct ifnet *ifp, struct mbuf *m, 225191148Skmacy struct sockaddr *dst, struct route *ro) 226178521Ssam{ 227178521Ssam if_printf(ifp, "discard raw packet\n"); 228178521Ssam m_freem(m); 229178521Ssam return EIO; 230178521Ssam} 231178521Ssam 232178521Ssamstatic void 233178521Ssamnull_input(struct ifnet *ifp, struct mbuf *m) 234178521Ssam{ 235178521Ssam if_printf(ifp, "if_input should not be called\n"); 236178521Ssam m_freem(m); 237178521Ssam} 238178521Ssam 239178354Ssam/* 240178354Ssam * Attach/setup the common net80211 state. Called by 241178354Ssam * the driver on attach to prior to creating any vap's. 242178354Ssam */ 243165569Ssamvoid 244190526Ssamieee80211_ifattach(struct ieee80211com *ic, 245190526Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 246165569Ssam{ 247165569Ssam struct ifnet *ifp = ic->ic_ifp; 248178354Ssam struct sockaddr_dl *sdl; 249178354Ssam struct ifaddr *ifa; 250165569Ssam 251178354Ssam KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type)); 252165569Ssam 253179388Ssam IEEE80211_LOCK_INIT(ic, ifp->if_xname); 254178354Ssam TAILQ_INIT(&ic->ic_vaps); 255191746Sthompsa 256191746Sthompsa /* Create a taskqueue for all state changes */ 257191746Sthompsa ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO, 258191746Sthompsa taskqueue_thread_enqueue, &ic->ic_tq); 259191746Sthompsa taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s taskq", 260191746Sthompsa ifp->if_xname); 261165569Ssam /* 262165569Ssam * Fill in 802.11 available channel set, mark all 263165569Ssam * available channels as active, and pick a default 264165569Ssam * channel if not already specified. 265165569Ssam */ 266178354Ssam ieee80211_media_init(ic); 267170530Ssam 268178354Ssam ic->ic_update_mcast = null_update_mcast; 269178354Ssam ic->ic_update_promisc = null_update_promisc; 270116742Ssam 271155688Ssam ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 272155688Ssam ic->ic_lintval = ic->ic_bintval; 273138568Ssam ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 274138568Ssam 275170530Ssam ieee80211_crypto_attach(ic); 276138568Ssam ieee80211_node_attach(ic); 277170530Ssam ieee80211_power_attach(ic); 278138568Ssam ieee80211_proto_attach(ic); 279190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 280190391Ssam ieee80211_superg_attach(ic); 281190391Ssam#endif 282170530Ssam ieee80211_ht_attach(ic); 283170530Ssam ieee80211_scan_attach(ic); 284178354Ssam ieee80211_regdomain_attach(ic); 285193843Ssam ieee80211_dfs_attach(ic); 286138568Ssam 287178354Ssam ieee80211_sysctl_attach(ic); 288138568Ssam 289178354Ssam ifp->if_addrlen = IEEE80211_ADDR_LEN; 290178354Ssam ifp->if_hdrlen = 0; 291178354Ssam if_attach(ifp); 292178354Ssam ifp->if_mtu = IEEE80211_MTU_MAX; 293178354Ssam ifp->if_broadcastaddr = ieee80211broadcastaddr; 294178521Ssam ifp->if_output = null_output; 295178521Ssam ifp->if_input = null_input; /* just in case */ 296178521Ssam ifp->if_resolvemulti = NULL; /* NB: callers check */ 297140915Ssam 298178354Ssam ifa = ifaddr_byindex(ifp->if_index); 299178354Ssam KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 300178354Ssam sdl = (struct sockaddr_dl *)ifa->ifa_addr; 301178354Ssam sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */ 302178354Ssam sdl->sdl_alen = IEEE80211_ADDR_LEN; 303190526Ssam IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr); 304116742Ssam} 305116742Ssam 306178354Ssam/* 307178354Ssam * Detach net80211 state on device detach. Tear down 308178354Ssam * all vap's and reclaim all common state prior to the 309178354Ssam * device state going away. Note we may call back into 310178354Ssam * driver; it must be prepared for this. 311178354Ssam */ 312116742Ssamvoid 313138568Ssamieee80211_ifdetach(struct ieee80211com *ic) 314116742Ssam{ 315138568Ssam struct ifnet *ifp = ic->ic_ifp; 316178354Ssam struct ieee80211vap *vap; 317116742Ssam 318193337Ssam if_detach(ifp); 319193337Ssam 320178354Ssam while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) 321178354Ssam ieee80211_vap_destroy(vap); 322188533Sthompsa ieee80211_waitfor_parent(ic); 323138568Ssam 324138568Ssam ieee80211_sysctl_detach(ic); 325193843Ssam ieee80211_dfs_detach(ic); 326178354Ssam ieee80211_regdomain_detach(ic); 327170530Ssam ieee80211_scan_detach(ic); 328190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 329190391Ssam ieee80211_superg_detach(ic); 330190391Ssam#endif 331170530Ssam ieee80211_ht_detach(ic); 332166012Ssam /* NB: must be called before ieee80211_node_detach */ 333138568Ssam ieee80211_proto_detach(ic); 334138568Ssam ieee80211_crypto_detach(ic); 335170530Ssam ieee80211_power_detach(ic); 336138568Ssam ieee80211_node_detach(ic); 337193337Ssam 338116742Ssam ifmedia_removeall(&ic->ic_media); 339191746Sthompsa taskqueue_free(ic->ic_tq); 340170530Ssam IEEE80211_LOCK_DESTROY(ic); 341178354Ssam} 342138568Ssam 343178354Ssam/* 344178354Ssam * Default reset method for use with the ioctl support. This 345178354Ssam * method is invoked after any state change in the 802.11 346178354Ssam * layer that should be propagated to the hardware but not 347178354Ssam * require re-initialization of the 802.11 state machine (e.g 348178354Ssam * rescanning for an ap). We always return ENETRESET which 349178354Ssam * should cause the driver to re-initialize the device. Drivers 350178354Ssam * can override this method to implement more optimized support. 351178354Ssam */ 352178354Ssamstatic int 353178354Ssamdefault_reset(struct ieee80211vap *vap, u_long cmd) 354178354Ssam{ 355178354Ssam return ENETRESET; 356178354Ssam} 357178354Ssam 358178354Ssam/* 359178354Ssam * Prepare a vap for use. Drivers use this call to 360178354Ssam * setup net80211 state in new vap's prior attaching 361178354Ssam * them with ieee80211_vap_attach (below). 362178354Ssam */ 363178354Ssamint 364178354Ssamieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, 365178354Ssam const char name[IFNAMSIZ], int unit, int opmode, int flags, 366178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], 367178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 368178354Ssam{ 369178354Ssam struct ifnet *ifp; 370178354Ssam 371178354Ssam ifp = if_alloc(IFT_ETHER); 372178354Ssam if (ifp == NULL) { 373178354Ssam if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n", 374178354Ssam __func__); 375178354Ssam return ENOMEM; 376178354Ssam } 377178354Ssam if_initname(ifp, name, unit); 378178354Ssam ifp->if_softc = vap; /* back pointer */ 379178354Ssam ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 380178354Ssam ifp->if_start = ieee80211_start; 381178354Ssam ifp->if_ioctl = ieee80211_ioctl; 382178354Ssam ifp->if_watchdog = NULL; /* NB: no watchdog routine */ 383178354Ssam ifp->if_init = ieee80211_init; 384178354Ssam /* NB: input+output filled in by ether_ifattach */ 385178354Ssam IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 386178354Ssam ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 387178354Ssam IFQ_SET_READY(&ifp->if_snd); 388178354Ssam 389178354Ssam vap->iv_ifp = ifp; 390178354Ssam vap->iv_ic = ic; 391178354Ssam vap->iv_flags = ic->ic_flags; /* propagate common flags */ 392178354Ssam vap->iv_flags_ext = ic->ic_flags_ext; 393178354Ssam vap->iv_flags_ven = ic->ic_flags_ven; 394178354Ssam vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 395178354Ssam vap->iv_htcaps = ic->ic_htcaps; 396178354Ssam vap->iv_opmode = opmode; 397178957Ssam vap->iv_caps |= ieee80211_opcap[opmode]; 398178354Ssam switch (opmode) { 399178354Ssam case IEEE80211_M_WDS: 400178354Ssam /* 401178354Ssam * WDS links must specify the bssid of the far end. 402178354Ssam * For legacy operation this is a static relationship. 403178354Ssam * For non-legacy operation the station must associate 404178354Ssam * and be authorized to pass traffic. Plumbing the 405178354Ssam * vap to the proper node happens when the vap 406178354Ssam * transitions to RUN state. 407178354Ssam */ 408178354Ssam IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 409178354Ssam vap->iv_flags |= IEEE80211_F_DESBSSID; 410178354Ssam if (flags & IEEE80211_CLONE_WDSLEGACY) 411178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 412178354Ssam break; 413186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 414186904Ssam case IEEE80211_M_AHDEMO: 415186904Ssam if (flags & IEEE80211_CLONE_TDMA) { 416186904Ssam /* NB: checked before clone operation allowed */ 417186904Ssam KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 418186904Ssam ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 419186904Ssam /* 420186904Ssam * Propagate TDMA capability to mark vap; this 421186904Ssam * cannot be removed and is used to distinguish 422186904Ssam * regular ahdemo operation from ahdemo+tdma. 423186904Ssam */ 424186904Ssam vap->iv_caps |= IEEE80211_C_TDMA; 425186904Ssam } 426186904Ssam break; 427186904Ssam#endif 428178354Ssam } 429184278Ssam /* auto-enable s/w beacon miss support */ 430184278Ssam if (flags & IEEE80211_CLONE_NOBEACONS) 431184278Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 432178354Ssam /* 433178354Ssam * Enable various functionality by default if we're 434178354Ssam * capable; the driver can override us if it knows better. 435178354Ssam */ 436178354Ssam if (vap->iv_caps & IEEE80211_C_WME) 437178354Ssam vap->iv_flags |= IEEE80211_F_WME; 438178354Ssam if (vap->iv_caps & IEEE80211_C_BURST) 439178354Ssam vap->iv_flags |= IEEE80211_F_BURST; 440178354Ssam /* NB: bg scanning only makes sense for station mode right now */ 441178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 442178354Ssam (vap->iv_caps & IEEE80211_C_BGSCAN)) 443178354Ssam vap->iv_flags |= IEEE80211_F_BGSCAN; 444178957Ssam vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 445178954Ssam /* NB: DFS support only makes sense for ap mode right now */ 446178954Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 447178954Ssam (vap->iv_caps & IEEE80211_C_DFS)) 448178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 449178354Ssam 450178354Ssam vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 451178354Ssam vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 452178354Ssam vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 453178354Ssam /* 454178354Ssam * Install a default reset method for the ioctl support; 455178354Ssam * the driver can override this. 456178354Ssam */ 457178354Ssam vap->iv_reset = default_reset; 458178354Ssam 459178354Ssam IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr); 460178354Ssam 461178354Ssam ieee80211_sysctl_vattach(vap); 462178354Ssam ieee80211_crypto_vattach(vap); 463178354Ssam ieee80211_node_vattach(vap); 464178354Ssam ieee80211_power_vattach(vap); 465178354Ssam ieee80211_proto_vattach(vap); 466190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 467190391Ssam ieee80211_superg_vattach(vap); 468190391Ssam#endif 469178354Ssam ieee80211_ht_vattach(vap); 470178354Ssam ieee80211_scan_vattach(vap); 471178354Ssam ieee80211_regdomain_vattach(vap); 472192468Ssam ieee80211_radiotap_vattach(vap); 473178354Ssam 474178354Ssam return 0; 475178354Ssam} 476178354Ssam 477178354Ssam/* 478178354Ssam * Activate a vap. State should have been prepared with a 479178354Ssam * call to ieee80211_vap_setup and by the driver. On return 480178354Ssam * from this call the vap is ready for use. 481178354Ssam */ 482178354Ssamint 483178354Ssamieee80211_vap_attach(struct ieee80211vap *vap, 484178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 485178354Ssam{ 486178354Ssam struct ifnet *ifp = vap->iv_ifp; 487178354Ssam struct ieee80211com *ic = vap->iv_ic; 488178354Ssam struct ifmediareq imr; 489178354Ssam int maxrate; 490178354Ssam 491178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 492178354Ssam "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 493178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 494178354Ssam ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext); 495178354Ssam 496178354Ssam /* 497178354Ssam * Do late attach work that cannot happen until after 498178354Ssam * the driver has had a chance to override defaults. 499178354Ssam */ 500178354Ssam ieee80211_node_latevattach(vap); 501178354Ssam ieee80211_power_latevattach(vap); 502178354Ssam 503178354Ssam maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 504178354Ssam vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 505178354Ssam ieee80211_media_status(ifp, &imr); 506178354Ssam /* NB: strip explicit mode; we're actually in autoselect */ 507188106Ssam ifmedia_set(&vap->iv_media, 508188106Ssam imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 509178354Ssam if (maxrate) 510178354Ssam ifp->if_baudrate = IF_Mbps(maxrate); 511178354Ssam 512178354Ssam ether_ifattach(ifp, vap->iv_myaddr); 513178354Ssam /* hook output method setup by ether_ifattach */ 514178354Ssam vap->iv_output = ifp->if_output; 515178354Ssam ifp->if_output = ieee80211_output; 516178354Ssam /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 517178354Ssam 518178354Ssam IEEE80211_LOCK(ic); 519178354Ssam TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 520178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 521190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 522178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 523190391Ssam#endif 524178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 525178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 526193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 527193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 528178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 529178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 530178354Ssam IEEE80211_UNLOCK(ic); 531178354Ssam 532178354Ssam return 1; 533178354Ssam} 534178354Ssam 535178354Ssam/* 536178354Ssam * Tear down vap state and reclaim the ifnet. 537178354Ssam * The driver is assumed to have prepared for 538178354Ssam * this; e.g. by turning off interrupts for the 539178354Ssam * underlying device. 540178354Ssam */ 541178354Ssamvoid 542178354Ssamieee80211_vap_detach(struct ieee80211vap *vap) 543178354Ssam{ 544178354Ssam struct ieee80211com *ic = vap->iv_ic; 545178354Ssam struct ifnet *ifp = vap->iv_ifp; 546178354Ssam 547178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 548178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 549178354Ssam ic->ic_ifp->if_xname); 550178354Ssam 551193312Ssam /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 552193312Ssam ether_ifdetach(ifp); 553178354Ssam 554193312Ssam ieee80211_stop(vap); 555193312Ssam 556191746Sthompsa /* 557191746Sthompsa * Flush any deferred vap tasks. 558191746Sthompsa * NB: must be before ether_ifdetach() and removal from ic_vaps list 559191746Sthompsa */ 560191746Sthompsa ieee80211_draintask(ic, &vap->iv_nstate_task); 561191746Sthompsa ieee80211_draintask(ic, &vap->iv_swbmiss_task); 562191746Sthompsa 563191746Sthompsa IEEE80211_LOCK(ic); 564191746Sthompsa KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 565178354Ssam TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 566178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 567190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 568178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 569190391Ssam#endif 570178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 571178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 572193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 573193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 574192468Ssam /* NB: this handles the bpfdetach done below */ 575192468Ssam ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 576178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 577178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 578178354Ssam IEEE80211_UNLOCK(ic); 579178354Ssam 580178354Ssam ifmedia_removeall(&vap->iv_media); 581178354Ssam 582192468Ssam ieee80211_radiotap_vdetach(vap); 583178354Ssam ieee80211_regdomain_vdetach(vap); 584178354Ssam ieee80211_scan_vdetach(vap); 585190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 586190391Ssam ieee80211_superg_vdetach(vap); 587190391Ssam#endif 588178354Ssam ieee80211_ht_vdetach(vap); 589178354Ssam /* NB: must be before ieee80211_node_vdetach */ 590178354Ssam ieee80211_proto_vdetach(vap); 591178354Ssam ieee80211_crypto_vdetach(vap); 592178354Ssam ieee80211_power_vdetach(vap); 593178354Ssam ieee80211_node_vdetach(vap); 594178354Ssam ieee80211_sysctl_vdetach(vap); 595182674Sweongyo 596182674Sweongyo if_free(ifp); 597116742Ssam} 598116742Ssam 599178354Ssam/* 600178354Ssam * Synchronize flag bit state in the parent ifnet structure 601178354Ssam * according to the state of all vap ifnet's. This is used, 602178354Ssam * for example, to handle IFF_PROMISC and IFF_ALLMULTI. 603178354Ssam */ 604178354Ssamvoid 605178354Ssamieee80211_syncifflag_locked(struct ieee80211com *ic, int flag) 606178354Ssam{ 607178354Ssam struct ifnet *ifp = ic->ic_ifp; 608178354Ssam struct ieee80211vap *vap; 609178354Ssam int bit, oflags; 610178354Ssam 611178354Ssam IEEE80211_LOCK_ASSERT(ic); 612178354Ssam 613178354Ssam bit = 0; 614178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 615178354Ssam if (vap->iv_ifp->if_flags & flag) { 616178354Ssam /* 617178354Ssam * XXX the bridge sets PROMISC but we don't want to 618178354Ssam * enable it on the device, discard here so all the 619178354Ssam * drivers don't need to special-case it 620178354Ssam */ 621178354Ssam if (flag == IFF_PROMISC && 622178354Ssam vap->iv_opmode == IEEE80211_M_HOSTAP) 623178354Ssam continue; 624178354Ssam bit = 1; 625178354Ssam break; 626178354Ssam } 627178354Ssam oflags = ifp->if_flags; 628178354Ssam if (bit) 629178354Ssam ifp->if_flags |= flag; 630178354Ssam else 631178354Ssam ifp->if_flags &= ~flag; 632178354Ssam if ((ifp->if_flags ^ oflags) & flag) { 633178354Ssam /* XXX should we return 1/0 and let caller do this? */ 634178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 635178354Ssam if (flag == IFF_PROMISC) 636191746Sthompsa ieee80211_runtask(ic, &ic->ic_promisc_task); 637178354Ssam else if (flag == IFF_ALLMULTI) 638191746Sthompsa ieee80211_runtask(ic, &ic->ic_mcast_task); 639178354Ssam } 640178354Ssam } 641178354Ssam} 642178354Ssam 643178354Ssam/* 644178354Ssam * Synchronize flag bit state in the com structure 645178354Ssam * according to the state of all vap's. This is used, 646178354Ssam * for example, to handle state changes via ioctls. 647178354Ssam */ 648178354Ssamstatic void 649178354Ssamieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 650178354Ssam{ 651178354Ssam struct ieee80211vap *vap; 652178354Ssam int bit; 653178354Ssam 654178354Ssam IEEE80211_LOCK_ASSERT(ic); 655178354Ssam 656178354Ssam bit = 0; 657178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 658178354Ssam if (vap->iv_flags & flag) { 659178354Ssam bit = 1; 660178354Ssam break; 661178354Ssam } 662178354Ssam if (bit) 663178354Ssam ic->ic_flags |= flag; 664178354Ssam else 665178354Ssam ic->ic_flags &= ~flag; 666178354Ssam} 667178354Ssam 668178354Ssamvoid 669178354Ssamieee80211_syncflag(struct ieee80211vap *vap, int flag) 670178354Ssam{ 671178354Ssam struct ieee80211com *ic = vap->iv_ic; 672178354Ssam 673178354Ssam IEEE80211_LOCK(ic); 674178354Ssam if (flag < 0) { 675178354Ssam flag = -flag; 676178354Ssam vap->iv_flags &= ~flag; 677178354Ssam } else 678178354Ssam vap->iv_flags |= flag; 679178354Ssam ieee80211_syncflag_locked(ic, flag); 680178354Ssam IEEE80211_UNLOCK(ic); 681178354Ssam} 682178354Ssam 683178354Ssam/* 684193655Ssam * Synchronize flags_ht bit state in the com structure 685178354Ssam * according to the state of all vap's. This is used, 686178354Ssam * for example, to handle state changes via ioctls. 687178354Ssam */ 688178354Ssamstatic void 689193655Ssamieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 690193655Ssam{ 691193655Ssam struct ieee80211vap *vap; 692193655Ssam int bit; 693193655Ssam 694193655Ssam IEEE80211_LOCK_ASSERT(ic); 695193655Ssam 696193655Ssam bit = 0; 697193655Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 698193655Ssam if (vap->iv_flags_ht & flag) { 699193655Ssam bit = 1; 700193655Ssam break; 701193655Ssam } 702193655Ssam if (bit) 703193655Ssam ic->ic_flags_ht |= flag; 704193655Ssam else 705193655Ssam ic->ic_flags_ht &= ~flag; 706193655Ssam} 707193655Ssam 708193655Ssamvoid 709193655Ssamieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 710193655Ssam{ 711193655Ssam struct ieee80211com *ic = vap->iv_ic; 712193655Ssam 713193655Ssam IEEE80211_LOCK(ic); 714193655Ssam if (flag < 0) { 715193655Ssam flag = -flag; 716193655Ssam vap->iv_flags_ht &= ~flag; 717193655Ssam } else 718193655Ssam vap->iv_flags_ht |= flag; 719193655Ssam ieee80211_syncflag_ht_locked(ic, flag); 720193655Ssam IEEE80211_UNLOCK(ic); 721193655Ssam} 722193655Ssam 723193655Ssam/* 724193655Ssam * Synchronize flags_ext bit state in the com structure 725193655Ssam * according to the state of all vap's. This is used, 726193655Ssam * for example, to handle state changes via ioctls. 727193655Ssam */ 728193655Ssamstatic void 729178354Ssamieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 730178354Ssam{ 731178354Ssam struct ieee80211vap *vap; 732178354Ssam int bit; 733178354Ssam 734178354Ssam IEEE80211_LOCK_ASSERT(ic); 735178354Ssam 736178354Ssam bit = 0; 737178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 738178354Ssam if (vap->iv_flags_ext & flag) { 739178354Ssam bit = 1; 740178354Ssam break; 741178354Ssam } 742178354Ssam if (bit) 743178354Ssam ic->ic_flags_ext |= flag; 744178354Ssam else 745178354Ssam ic->ic_flags_ext &= ~flag; 746178354Ssam} 747178354Ssam 748178354Ssamvoid 749178354Ssamieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 750178354Ssam{ 751178354Ssam struct ieee80211com *ic = vap->iv_ic; 752178354Ssam 753178354Ssam IEEE80211_LOCK(ic); 754178354Ssam if (flag < 0) { 755178354Ssam flag = -flag; 756178354Ssam vap->iv_flags_ext &= ~flag; 757178354Ssam } else 758178354Ssam vap->iv_flags_ext |= flag; 759178354Ssam ieee80211_syncflag_ext_locked(ic, flag); 760178354Ssam IEEE80211_UNLOCK(ic); 761178354Ssam} 762178354Ssam 763166012Ssamstatic __inline int 764166012Ssammapgsm(u_int freq, u_int flags) 765166012Ssam{ 766166012Ssam freq *= 10; 767166012Ssam if (flags & IEEE80211_CHAN_QUARTER) 768166012Ssam freq += 5; 769166012Ssam else if (flags & IEEE80211_CHAN_HALF) 770166012Ssam freq += 10; 771166012Ssam else 772166012Ssam freq += 20; 773166012Ssam /* NB: there is no 907/20 wide but leave room */ 774166012Ssam return (freq - 906*10) / 5; 775166012Ssam} 776166012Ssam 777166012Ssamstatic __inline int 778166012Ssammappsb(u_int freq, u_int flags) 779166012Ssam{ 780166012Ssam return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 781166012Ssam} 782166012Ssam 783116742Ssam/* 784116742Ssam * Convert MHz frequency to IEEE channel number. 785116742Ssam */ 786152450Ssamint 787116742Ssamieee80211_mhz2ieee(u_int freq, u_int flags) 788116742Ssam{ 789167430Ssam#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 790166012Ssam if (flags & IEEE80211_CHAN_GSM) 791166012Ssam return mapgsm(freq, flags); 792116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 793116742Ssam if (freq == 2484) 794116742Ssam return 14; 795116742Ssam if (freq < 2484) 796152450Ssam return ((int) freq - 2407) / 5; 797116742Ssam else 798116742Ssam return 15 + ((freq - 2512) / 20); 799116899Ssam } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 800165569Ssam if (freq <= 5000) { 801170530Ssam /* XXX check regdomain? */ 802167430Ssam if (IS_FREQ_IN_PSB(freq)) 803166012Ssam return mappsb(freq, flags); 804152450Ssam return (freq - 4000) / 5; 805165569Ssam } else 806152450Ssam return (freq - 5000) / 5; 807116742Ssam } else { /* either, guess */ 808116742Ssam if (freq == 2484) 809116742Ssam return 14; 810166012Ssam if (freq < 2484) { 811166012Ssam if (907 <= freq && freq <= 922) 812166012Ssam return mapgsm(freq, flags); 813152450Ssam return ((int) freq - 2407) / 5; 814166012Ssam } 815152450Ssam if (freq < 5000) { 816167430Ssam if (IS_FREQ_IN_PSB(freq)) 817166012Ssam return mappsb(freq, flags); 818165569Ssam else if (freq > 4900) 819152450Ssam return (freq - 4000) / 5; 820152450Ssam else 821152450Ssam return 15 + ((freq - 2512) / 20); 822152450Ssam } 823116742Ssam return (freq - 5000) / 5; 824116742Ssam } 825167430Ssam#undef IS_FREQ_IN_PSB 826116742Ssam} 827116742Ssam 828116742Ssam/* 829116742Ssam * Convert channel to IEEE channel number. 830116742Ssam */ 831152450Ssamint 832165825Smjacobieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 833116742Ssam{ 834170530Ssam if (c == NULL) { 835138568Ssam if_printf(ic->ic_ifp, "invalid channel (NULL)\n"); 836117039Ssam return 0; /* XXX */ 837116742Ssam } 838170530Ssam return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 839116742Ssam} 840116742Ssam 841116742Ssam/* 842116742Ssam * Convert IEEE channel number to MHz frequency. 843116742Ssam */ 844116742Ssamu_int 845116742Ssamieee80211_ieee2mhz(u_int chan, u_int flags) 846116742Ssam{ 847166012Ssam if (flags & IEEE80211_CHAN_GSM) 848166012Ssam return 907 + 5 * (chan / 10); 849116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 850116742Ssam if (chan == 14) 851116742Ssam return 2484; 852116742Ssam if (chan < 14) 853116742Ssam return 2407 + chan*5; 854116742Ssam else 855116742Ssam return 2512 + ((chan-15)*20); 856116742Ssam } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 857165569Ssam if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 858165569Ssam chan -= 37; 859165569Ssam return 4940 + chan*5 + (chan % 5 ? 2 : 0); 860165569Ssam } 861116742Ssam return 5000 + (chan*5); 862116742Ssam } else { /* either, guess */ 863166012Ssam /* XXX can't distinguish PSB+GSM channels */ 864116742Ssam if (chan == 14) 865116742Ssam return 2484; 866116742Ssam if (chan < 14) /* 0-13 */ 867116742Ssam return 2407 + chan*5; 868116742Ssam if (chan < 27) /* 15-26 */ 869116742Ssam return 2512 + ((chan-15)*20); 870116742Ssam return 5000 + (chan*5); 871116742Ssam } 872116742Ssam} 873116742Ssam 874116742Ssam/* 875170530Ssam * Locate a channel given a frequency+flags. We cache 876178354Ssam * the previous lookup to optimize switching between two 877170530Ssam * channels--as happens with dynamic turbo. 878170530Ssam */ 879170530Ssamstruct ieee80211_channel * 880170530Ssamieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 881170530Ssam{ 882170530Ssam struct ieee80211_channel *c; 883170530Ssam int i; 884170530Ssam 885170530Ssam flags &= IEEE80211_CHAN_ALLTURBO; 886170530Ssam c = ic->ic_prevchan; 887170530Ssam if (c != NULL && c->ic_freq == freq && 888170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 889170530Ssam return c; 890170530Ssam /* brute force search */ 891170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 892170530Ssam c = &ic->ic_channels[i]; 893170530Ssam if (c->ic_freq == freq && 894170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 895170530Ssam return c; 896170530Ssam } 897170530Ssam return NULL; 898170530Ssam} 899170530Ssam 900173861Ssam/* 901173861Ssam * Locate a channel given a channel number+flags. We cache 902173861Ssam * the previous lookup to optimize switching between two 903173861Ssam * channels--as happens with dynamic turbo. 904173861Ssam */ 905173861Ssamstruct ieee80211_channel * 906173861Ssamieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 907173861Ssam{ 908173861Ssam struct ieee80211_channel *c; 909173861Ssam int i; 910173861Ssam 911173861Ssam flags &= IEEE80211_CHAN_ALLTURBO; 912173861Ssam c = ic->ic_prevchan; 913173861Ssam if (c != NULL && c->ic_ieee == ieee && 914173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 915173861Ssam return c; 916173861Ssam /* brute force search */ 917173861Ssam for (i = 0; i < ic->ic_nchans; i++) { 918173861Ssam c = &ic->ic_channels[i]; 919173861Ssam if (c->ic_ieee == ieee && 920173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 921173861Ssam return c; 922173861Ssam } 923173861Ssam return NULL; 924173861Ssam} 925173861Ssam 926170530Ssamstatic void 927178354Ssamaddmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 928170530Ssam{ 929170530Ssam#define ADD(_ic, _s, _o) \ 930178354Ssam ifmedia_add(media, \ 931170530Ssam IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 932170530Ssam static const u_int mopts[IEEE80211_MODE_MAX] = { 933188106Ssam [IEEE80211_MODE_AUTO] = IFM_AUTO, 934188106Ssam [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 935188106Ssam [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 936188106Ssam [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 937188106Ssam [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 938188106Ssam [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 939188106Ssam [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 940188106Ssam [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 941188782Ssam [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 942188782Ssam [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 943188106Ssam [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 944188106Ssam [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 945170530Ssam }; 946170530Ssam u_int mopt; 947170530Ssam 948170530Ssam mopt = mopts[mode]; 949178354Ssam if (addsta) 950178354Ssam ADD(ic, mword, mopt); /* STA mode has no cap */ 951178354Ssam if (caps & IEEE80211_C_IBSS) 952178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 953178354Ssam if (caps & IEEE80211_C_HOSTAP) 954178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 955178354Ssam if (caps & IEEE80211_C_AHDEMO) 956178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 957178354Ssam if (caps & IEEE80211_C_MONITOR) 958178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 959178354Ssam if (caps & IEEE80211_C_WDS) 960178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_WDS); 961170530Ssam#undef ADD 962170530Ssam} 963170530Ssam 964170530Ssam/* 965116742Ssam * Setup the media data structures according to the channel and 966178354Ssam * rate tables. 967116742Ssam */ 968178354Ssamstatic int 969178354Ssamieee80211_media_setup(struct ieee80211com *ic, 970178354Ssam struct ifmedia *media, int caps, int addsta, 971116742Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 972116742Ssam{ 973170530Ssam int i, j, mode, rate, maxrate, mword, r; 974170530Ssam const struct ieee80211_rateset *rs; 975116742Ssam struct ieee80211_rateset allrates; 976116742Ssam 977118887Ssam /* 978116742Ssam * Fill in media characteristics. 979116742Ssam */ 980178354Ssam ifmedia_init(media, 0, media_change, media_stat); 981116742Ssam maxrate = 0; 982170530Ssam /* 983170530Ssam * Add media for legacy operating modes. 984170530Ssam */ 985116742Ssam memset(&allrates, 0, sizeof(allrates)); 986170530Ssam for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 987167468Ssam if (isclr(ic->ic_modecaps, mode)) 988116742Ssam continue; 989178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 990116742Ssam if (mode == IEEE80211_MODE_AUTO) 991116742Ssam continue; 992116742Ssam rs = &ic->ic_sup_rates[mode]; 993116742Ssam for (i = 0; i < rs->rs_nrates; i++) { 994116742Ssam rate = rs->rs_rates[i]; 995116742Ssam mword = ieee80211_rate2media(ic, rate, mode); 996116742Ssam if (mword == 0) 997116742Ssam continue; 998178354Ssam addmedia(media, caps, addsta, mode, mword); 999116742Ssam /* 1000170530Ssam * Add legacy rate to the collection of all rates. 1001116742Ssam */ 1002116742Ssam r = rate & IEEE80211_RATE_VAL; 1003116742Ssam for (j = 0; j < allrates.rs_nrates; j++) 1004116742Ssam if (allrates.rs_rates[j] == r) 1005116742Ssam break; 1006116742Ssam if (j == allrates.rs_nrates) { 1007116742Ssam /* unique, add to the set */ 1008116742Ssam allrates.rs_rates[j] = r; 1009116742Ssam allrates.rs_nrates++; 1010116742Ssam } 1011116742Ssam rate = (rate & IEEE80211_RATE_VAL) / 2; 1012116742Ssam if (rate > maxrate) 1013116742Ssam maxrate = rate; 1014116742Ssam } 1015116742Ssam } 1016116742Ssam for (i = 0; i < allrates.rs_nrates; i++) { 1017116742Ssam mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1018116742Ssam IEEE80211_MODE_AUTO); 1019116742Ssam if (mword == 0) 1020116742Ssam continue; 1021170530Ssam /* NB: remove media options from mword */ 1022178354Ssam addmedia(media, caps, addsta, 1023178354Ssam IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1024116742Ssam } 1025170530Ssam /* 1026170530Ssam * Add HT/11n media. Note that we do not have enough 1027170530Ssam * bits in the media subtype to express the MCS so we 1028170530Ssam * use a "placeholder" media subtype and any fixed MCS 1029170530Ssam * must be specified with a different mechanism. 1030170530Ssam */ 1031188782Ssam for (; mode <= IEEE80211_MODE_11NG; mode++) { 1032170530Ssam if (isclr(ic->ic_modecaps, mode)) 1033170530Ssam continue; 1034178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1035178354Ssam addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1036170530Ssam } 1037170530Ssam if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1038170530Ssam isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1039178354Ssam addmedia(media, caps, addsta, 1040178354Ssam IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1041170530Ssam /* XXX could walk htrates */ 1042170530Ssam /* XXX known array size */ 1043178354Ssam if (ieee80211_htrates[15].ht40_rate_400ns > maxrate) 1044178354Ssam maxrate = ieee80211_htrates[15].ht40_rate_400ns; 1045170530Ssam } 1046178354Ssam return maxrate; 1047178354Ssam} 1048116742Ssam 1049178354Ssamvoid 1050178354Ssamieee80211_media_init(struct ieee80211com *ic) 1051178354Ssam{ 1052178354Ssam struct ifnet *ifp = ic->ic_ifp; 1053178354Ssam int maxrate; 1054178354Ssam 1055178354Ssam /* NB: this works because the structure is initialized to zero */ 1056178354Ssam if (!LIST_EMPTY(&ic->ic_media.ifm_list)) { 1057178354Ssam /* 1058178354Ssam * We are re-initializing the channel list; clear 1059178354Ssam * the existing media state as the media routines 1060178354Ssam * don't suppress duplicates. 1061178354Ssam */ 1062178354Ssam ifmedia_removeall(&ic->ic_media); 1063178354Ssam } 1064178354Ssam ieee80211_chan_init(ic); 1065178354Ssam 1066178354Ssam /* 1067178354Ssam * Recalculate media settings in case new channel list changes 1068178354Ssam * the set of available modes. 1069178354Ssam */ 1070178354Ssam maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1, 1071178354Ssam ieee80211com_media_change, ieee80211com_media_status); 1072170530Ssam /* NB: strip explicit mode; we're actually in autoselect */ 1073170530Ssam ifmedia_set(&ic->ic_media, 1074188106Ssam media_status(ic->ic_opmode, ic->ic_curchan) &~ 1075188106Ssam (IFM_MMASK | IFM_IEEE80211_TURBO)); 1076116742Ssam if (maxrate) 1077116742Ssam ifp->if_baudrate = IF_Mbps(maxrate); 1078178354Ssam 1079178354Ssam /* XXX need to propagate new media settings to vap's */ 1080116742Ssam} 1081116742Ssam 1082188782Ssam/* XXX inline or eliminate? */ 1083165569Ssamconst struct ieee80211_rateset * 1084165569Ssamieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1085165569Ssam{ 1086188774Ssam /* XXX does this work for 11ng basic rates? */ 1087170530Ssam return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1088165569Ssam} 1089165569Ssam 1090138568Ssamvoid 1091138568Ssamieee80211_announce(struct ieee80211com *ic) 1092138568Ssam{ 1093138568Ssam struct ifnet *ifp = ic->ic_ifp; 1094138568Ssam int i, mode, rate, mword; 1095170530Ssam const struct ieee80211_rateset *rs; 1096138568Ssam 1097172227Ssam /* NB: skip AUTO since it has no rates */ 1098172227Ssam for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1099167468Ssam if (isclr(ic->ic_modecaps, mode)) 1100138568Ssam continue; 1101138568Ssam if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 1102138568Ssam rs = &ic->ic_sup_rates[mode]; 1103138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 1104170530Ssam mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1105138568Ssam if (mword == 0) 1106138568Ssam continue; 1107170530Ssam rate = ieee80211_media2rate(mword); 1108138568Ssam printf("%s%d%sMbps", (i != 0 ? " " : ""), 1109170530Ssam rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1110138568Ssam } 1111138568Ssam printf("\n"); 1112138568Ssam } 1113170530Ssam ieee80211_ht_announce(ic); 1114138568Ssam} 1115138568Ssam 1116170530Ssamvoid 1117170530Ssamieee80211_announce_channels(struct ieee80211com *ic) 1118116742Ssam{ 1119170530Ssam const struct ieee80211_channel *c; 1120170530Ssam char type; 1121170530Ssam int i, cw; 1122170530Ssam 1123170530Ssam printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1124170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 1125170530Ssam c = &ic->ic_channels[i]; 1126170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 1127170530Ssam type = 'S'; 1128170530Ssam else if (IEEE80211_IS_CHAN_108A(c)) 1129170530Ssam type = 'T'; 1130170530Ssam else if (IEEE80211_IS_CHAN_108G(c)) 1131170530Ssam type = 'G'; 1132170530Ssam else if (IEEE80211_IS_CHAN_HT(c)) 1133170530Ssam type = 'n'; 1134170530Ssam else if (IEEE80211_IS_CHAN_A(c)) 1135170530Ssam type = 'a'; 1136170530Ssam else if (IEEE80211_IS_CHAN_ANYG(c)) 1137170530Ssam type = 'g'; 1138170530Ssam else if (IEEE80211_IS_CHAN_B(c)) 1139170530Ssam type = 'b'; 1140170530Ssam else 1141170530Ssam type = 'f'; 1142170530Ssam if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1143170530Ssam cw = 40; 1144170530Ssam else if (IEEE80211_IS_CHAN_HALF(c)) 1145170530Ssam cw = 10; 1146170530Ssam else if (IEEE80211_IS_CHAN_QUARTER(c)) 1147170530Ssam cw = 5; 1148170530Ssam else 1149170530Ssam cw = 20; 1150170530Ssam printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 1151170530Ssam , c->ic_ieee, c->ic_freq, type 1152170530Ssam , cw 1153170530Ssam , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 1154170530Ssam IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 1155170530Ssam , c->ic_maxregpower 1156170530Ssam , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 1157170530Ssam , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 1158170530Ssam ); 1159170530Ssam } 1160116742Ssam} 1161116742Ssam 1162170530Ssamstatic int 1163184273Ssammedia2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 1164170530Ssam{ 1165116742Ssam switch (IFM_MODE(ime->ifm_media)) { 1166116742Ssam case IFM_IEEE80211_11A: 1167178354Ssam *mode = IEEE80211_MODE_11A; 1168116742Ssam break; 1169116742Ssam case IFM_IEEE80211_11B: 1170178354Ssam *mode = IEEE80211_MODE_11B; 1171116742Ssam break; 1172116742Ssam case IFM_IEEE80211_11G: 1173178354Ssam *mode = IEEE80211_MODE_11G; 1174116742Ssam break; 1175124543Sonoe case IFM_IEEE80211_FH: 1176178354Ssam *mode = IEEE80211_MODE_FH; 1177124543Sonoe break; 1178170530Ssam case IFM_IEEE80211_11NA: 1179178354Ssam *mode = IEEE80211_MODE_11NA; 1180170530Ssam break; 1181170530Ssam case IFM_IEEE80211_11NG: 1182178354Ssam *mode = IEEE80211_MODE_11NG; 1183170530Ssam break; 1184116742Ssam case IFM_AUTO: 1185178354Ssam *mode = IEEE80211_MODE_AUTO; 1186116742Ssam break; 1187116742Ssam default: 1188178354Ssam return 0; 1189116742Ssam } 1190116742Ssam /* 1191138568Ssam * Turbo mode is an ``option''. 1192138568Ssam * XXX does not apply to AUTO 1193116742Ssam */ 1194116742Ssam if (ime->ifm_media & IFM_IEEE80211_TURBO) { 1195178354Ssam if (*mode == IEEE80211_MODE_11A) { 1196184273Ssam if (flags & IEEE80211_F_TURBOP) 1197178354Ssam *mode = IEEE80211_MODE_TURBO_A; 1198170530Ssam else 1199178354Ssam *mode = IEEE80211_MODE_STURBO_A; 1200178354Ssam } else if (*mode == IEEE80211_MODE_11G) 1201178354Ssam *mode = IEEE80211_MODE_TURBO_G; 1202138568Ssam else 1203178354Ssam return 0; 1204116742Ssam } 1205170530Ssam /* XXX HT40 +/- */ 1206178354Ssam return 1; 1207178354Ssam} 1208116742Ssam 1209178354Ssam/* 1210184273Ssam * Handle a media change request on the underlying interface. 1211178354Ssam */ 1212178354Ssamint 1213178354Ssamieee80211com_media_change(struct ifnet *ifp) 1214178354Ssam{ 1215184273Ssam return EINVAL; 1216178354Ssam} 1217116742Ssam 1218178354Ssam/* 1219178354Ssam * Handle a media change request on the vap interface. 1220178354Ssam */ 1221178354Ssamint 1222178354Ssamieee80211_media_change(struct ifnet *ifp) 1223178354Ssam{ 1224178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1225178354Ssam struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 1226184273Ssam uint16_t newmode; 1227178354Ssam 1228184273Ssam if (!media2mode(ime, vap->iv_flags, &newmode)) 1229178354Ssam return EINVAL; 1230184273Ssam if (vap->iv_des_mode != newmode) { 1231184273Ssam vap->iv_des_mode = newmode; 1232193340Ssam /* XXX kick state machine if up+running */ 1233178354Ssam } 1234178354Ssam return 0; 1235116742Ssam} 1236116742Ssam 1237170530Ssam/* 1238170530Ssam * Common code to calculate the media status word 1239170530Ssam * from the operating mode and channel state. 1240170530Ssam */ 1241170530Ssamstatic int 1242170530Ssammedia_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 1243170530Ssam{ 1244170530Ssam int status; 1245170530Ssam 1246170530Ssam status = IFM_IEEE80211; 1247170530Ssam switch (opmode) { 1248170530Ssam case IEEE80211_M_STA: 1249170530Ssam break; 1250170530Ssam case IEEE80211_M_IBSS: 1251170530Ssam status |= IFM_IEEE80211_ADHOC; 1252170530Ssam break; 1253170530Ssam case IEEE80211_M_HOSTAP: 1254170530Ssam status |= IFM_IEEE80211_HOSTAP; 1255170530Ssam break; 1256170530Ssam case IEEE80211_M_MONITOR: 1257170530Ssam status |= IFM_IEEE80211_MONITOR; 1258170530Ssam break; 1259170530Ssam case IEEE80211_M_AHDEMO: 1260170530Ssam status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1261170530Ssam break; 1262170530Ssam case IEEE80211_M_WDS: 1263178354Ssam status |= IFM_IEEE80211_WDS; 1264170530Ssam break; 1265170530Ssam } 1266170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) { 1267170530Ssam status |= IFM_IEEE80211_11NA; 1268170530Ssam } else if (IEEE80211_IS_CHAN_HTG(chan)) { 1269170530Ssam status |= IFM_IEEE80211_11NG; 1270170530Ssam } else if (IEEE80211_IS_CHAN_A(chan)) { 1271170530Ssam status |= IFM_IEEE80211_11A; 1272170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 1273170530Ssam status |= IFM_IEEE80211_11B; 1274170530Ssam } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 1275170530Ssam status |= IFM_IEEE80211_11G; 1276170530Ssam } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 1277170530Ssam status |= IFM_IEEE80211_FH; 1278170530Ssam } 1279170530Ssam /* XXX else complain? */ 1280170530Ssam 1281170530Ssam if (IEEE80211_IS_CHAN_TURBO(chan)) 1282170530Ssam status |= IFM_IEEE80211_TURBO; 1283178354Ssam#if 0 1284178354Ssam if (IEEE80211_IS_CHAN_HT20(chan)) 1285178354Ssam status |= IFM_IEEE80211_HT20; 1286178354Ssam if (IEEE80211_IS_CHAN_HT40(chan)) 1287178354Ssam status |= IFM_IEEE80211_HT40; 1288178354Ssam#endif 1289170530Ssam return status; 1290170530Ssam} 1291170530Ssam 1292178354Ssamstatic void 1293178354Ssamieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1294178354Ssam{ 1295178354Ssam struct ieee80211com *ic = ifp->if_l2com; 1296178354Ssam struct ieee80211vap *vap; 1297178354Ssam 1298178354Ssam imr->ifm_status = IFM_AVALID; 1299178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1300178354Ssam if (vap->iv_ifp->if_flags & IFF_UP) { 1301178354Ssam imr->ifm_status |= IFM_ACTIVE; 1302178354Ssam break; 1303178354Ssam } 1304178354Ssam imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan); 1305178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1306178354Ssam imr->ifm_current = imr->ifm_active; 1307178354Ssam} 1308178354Ssam 1309116742Ssamvoid 1310116742Ssamieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1311116742Ssam{ 1312178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1313178354Ssam struct ieee80211com *ic = vap->iv_ic; 1314170530Ssam enum ieee80211_phymode mode; 1315116742Ssam 1316116742Ssam imr->ifm_status = IFM_AVALID; 1317170530Ssam /* 1318170530Ssam * NB: use the current channel's mode to lock down a xmit 1319170530Ssam * rate only when running; otherwise we may have a mismatch 1320170530Ssam * in which case the rate will not be convertible. 1321170530Ssam */ 1322178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1323116742Ssam imr->ifm_status |= IFM_ACTIVE; 1324170530Ssam mode = ieee80211_chan2mode(ic->ic_curchan); 1325170530Ssam } else 1326170530Ssam mode = IEEE80211_MODE_AUTO; 1327178354Ssam imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 1328138568Ssam /* 1329138568Ssam * Calculate a current rate if possible. 1330138568Ssam */ 1331178354Ssam if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 1332138568Ssam /* 1333138568Ssam * A fixed rate is set, report that. 1334138568Ssam */ 1335138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1336178354Ssam vap->iv_txparms[mode].ucastrate, mode); 1337178354Ssam } else if (vap->iv_opmode == IEEE80211_M_STA) { 1338138568Ssam /* 1339138568Ssam * In station mode report the current transmit rate. 1340138568Ssam */ 1341138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1342178354Ssam vap->iv_bss->ni_txrate, mode); 1343128966Sandre } else 1344138568Ssam imr->ifm_active |= IFM_AUTO; 1345178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1346178354Ssam imr->ifm_current = imr->ifm_active; 1347116742Ssam} 1348116742Ssam 1349116742Ssam/* 1350116742Ssam * Set the current phy mode and recalculate the active channel 1351116742Ssam * set based on the available channels for this mode. Also 1352116742Ssam * select a new default/current channel if the current one is 1353116742Ssam * inappropriate for this mode. 1354116742Ssam */ 1355116742Ssamint 1356116742Ssamieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 1357116742Ssam{ 1358116742Ssam /* 1359166012Ssam * Adjust basic rates in 11b/11g supported rate set. 1360166012Ssam * Note that if operating on a hal/quarter rate channel 1361166012Ssam * this is a noop as those rates sets are different 1362166012Ssam * and used instead. 1363116742Ssam */ 1364166012Ssam if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 1365178354Ssam ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 1366166012Ssam 1367116742Ssam ic->ic_curmode = mode; 1368138568Ssam ieee80211_reset_erp(ic); /* reset ERP state */ 1369138568Ssam 1370116742Ssam return 0; 1371116742Ssam} 1372116742Ssam 1373116742Ssam/* 1374170530Ssam * Return the phy mode for with the specified channel. 1375116742Ssam */ 1376116742Ssamenum ieee80211_phymode 1377170530Ssamieee80211_chan2mode(const struct ieee80211_channel *chan) 1378116742Ssam{ 1379170530Ssam 1380170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) 1381170530Ssam return IEEE80211_MODE_11NA; 1382170530Ssam else if (IEEE80211_IS_CHAN_HTG(chan)) 1383170530Ssam return IEEE80211_MODE_11NG; 1384170530Ssam else if (IEEE80211_IS_CHAN_108G(chan)) 1385170530Ssam return IEEE80211_MODE_TURBO_G; 1386170530Ssam else if (IEEE80211_IS_CHAN_ST(chan)) 1387170530Ssam return IEEE80211_MODE_STURBO_A; 1388170530Ssam else if (IEEE80211_IS_CHAN_TURBO(chan)) 1389153350Ssam return IEEE80211_MODE_TURBO_A; 1390188782Ssam else if (IEEE80211_IS_CHAN_HALF(chan)) 1391188782Ssam return IEEE80211_MODE_HALF; 1392188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(chan)) 1393188782Ssam return IEEE80211_MODE_QUARTER; 1394170530Ssam else if (IEEE80211_IS_CHAN_A(chan)) 1395116742Ssam return IEEE80211_MODE_11A; 1396170530Ssam else if (IEEE80211_IS_CHAN_ANYG(chan)) 1397116742Ssam return IEEE80211_MODE_11G; 1398170530Ssam else if (IEEE80211_IS_CHAN_B(chan)) 1399116742Ssam return IEEE80211_MODE_11B; 1400170530Ssam else if (IEEE80211_IS_CHAN_FHSS(chan)) 1401170530Ssam return IEEE80211_MODE_FH; 1402170530Ssam 1403170530Ssam /* NB: should not get here */ 1404170530Ssam printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 1405170530Ssam __func__, chan->ic_freq, chan->ic_flags); 1406170530Ssam return IEEE80211_MODE_11B; 1407116742Ssam} 1408116742Ssam 1409170530Ssamstruct ratemedia { 1410170530Ssam u_int match; /* rate + mode */ 1411170530Ssam u_int media; /* if_media rate */ 1412170530Ssam}; 1413170530Ssam 1414170530Ssamstatic int 1415170530Ssamfindmedia(const struct ratemedia rates[], int n, u_int match) 1416170530Ssam{ 1417170530Ssam int i; 1418170530Ssam 1419170530Ssam for (i = 0; i < n; i++) 1420170530Ssam if (rates[i].match == match) 1421170530Ssam return rates[i].media; 1422170530Ssam return IFM_AUTO; 1423170530Ssam} 1424170530Ssam 1425116742Ssam/* 1426170530Ssam * Convert IEEE80211 rate value to ifmedia subtype. 1427170530Ssam * Rate is either a legacy rate in units of 0.5Mbps 1428170530Ssam * or an MCS index. 1429116742Ssam */ 1430116742Ssamint 1431116742Ssamieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 1432116742Ssam{ 1433116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1434170530Ssam static const struct ratemedia rates[] = { 1435124543Sonoe { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 1436124543Sonoe { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 1437124543Sonoe { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 1438124543Sonoe { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 1439124543Sonoe { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 1440124543Sonoe { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 1441124543Sonoe { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 1442124543Sonoe { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 1443124543Sonoe { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 1444124543Sonoe { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 1445124543Sonoe { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 1446124543Sonoe { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 1447124543Sonoe { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 1448124543Sonoe { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 1449124543Sonoe { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 1450124543Sonoe { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 1451124543Sonoe { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 1452124543Sonoe { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 1453124543Sonoe { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 1454124543Sonoe { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 1455124543Sonoe { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 1456124543Sonoe { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 1457124543Sonoe { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 1458124543Sonoe { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1459124543Sonoe { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1460124543Sonoe { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1461124543Sonoe { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1462165569Ssam { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 1463165569Ssam { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 1464165569Ssam { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 1465116742Ssam /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1466116742Ssam }; 1467170530Ssam static const struct ratemedia htrates[] = { 1468170530Ssam { 0, IFM_IEEE80211_MCS }, 1469170530Ssam { 1, IFM_IEEE80211_MCS }, 1470170530Ssam { 2, IFM_IEEE80211_MCS }, 1471170530Ssam { 3, IFM_IEEE80211_MCS }, 1472170530Ssam { 4, IFM_IEEE80211_MCS }, 1473170530Ssam { 5, IFM_IEEE80211_MCS }, 1474170530Ssam { 6, IFM_IEEE80211_MCS }, 1475170530Ssam { 7, IFM_IEEE80211_MCS }, 1476170530Ssam { 8, IFM_IEEE80211_MCS }, 1477170530Ssam { 9, IFM_IEEE80211_MCS }, 1478170530Ssam { 10, IFM_IEEE80211_MCS }, 1479170530Ssam { 11, IFM_IEEE80211_MCS }, 1480170530Ssam { 12, IFM_IEEE80211_MCS }, 1481170530Ssam { 13, IFM_IEEE80211_MCS }, 1482170530Ssam { 14, IFM_IEEE80211_MCS }, 1483170530Ssam { 15, IFM_IEEE80211_MCS }, 1484170530Ssam }; 1485170530Ssam int m; 1486116742Ssam 1487170530Ssam /* 1488170530Ssam * Check 11n rates first for match as an MCS. 1489170530Ssam */ 1490170530Ssam if (mode == IEEE80211_MODE_11NA) { 1491172226Ssam if (rate & IEEE80211_RATE_MCS) { 1492172226Ssam rate &= ~IEEE80211_RATE_MCS; 1493170530Ssam m = findmedia(htrates, N(htrates), rate); 1494170530Ssam if (m != IFM_AUTO) 1495170530Ssam return m | IFM_IEEE80211_11NA; 1496170530Ssam } 1497170530Ssam } else if (mode == IEEE80211_MODE_11NG) { 1498170530Ssam /* NB: 12 is ambiguous, it will be treated as an MCS */ 1499172226Ssam if (rate & IEEE80211_RATE_MCS) { 1500172226Ssam rate &= ~IEEE80211_RATE_MCS; 1501170530Ssam m = findmedia(htrates, N(htrates), rate); 1502170530Ssam if (m != IFM_AUTO) 1503170530Ssam return m | IFM_IEEE80211_11NG; 1504170530Ssam } 1505170530Ssam } 1506170530Ssam rate &= IEEE80211_RATE_VAL; 1507116742Ssam switch (mode) { 1508116742Ssam case IEEE80211_MODE_11A: 1509188782Ssam case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 1510188782Ssam case IEEE80211_MODE_QUARTER: 1511170530Ssam case IEEE80211_MODE_11NA: 1512138568Ssam case IEEE80211_MODE_TURBO_A: 1513170530Ssam case IEEE80211_MODE_STURBO_A: 1514170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A); 1515116742Ssam case IEEE80211_MODE_11B: 1516170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B); 1517124543Sonoe case IEEE80211_MODE_FH: 1518170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH); 1519116742Ssam case IEEE80211_MODE_AUTO: 1520116742Ssam /* NB: ic may be NULL for some drivers */ 1521188775Ssam if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 1522170530Ssam return findmedia(rates, N(rates), 1523170530Ssam rate | IFM_IEEE80211_FH); 1524116742Ssam /* NB: hack, 11g matches both 11b+11a rates */ 1525116742Ssam /* fall thru... */ 1526116742Ssam case IEEE80211_MODE_11G: 1527170530Ssam case IEEE80211_MODE_11NG: 1528138568Ssam case IEEE80211_MODE_TURBO_G: 1529170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G); 1530116742Ssam } 1531116742Ssam return IFM_AUTO; 1532116742Ssam#undef N 1533116742Ssam} 1534116742Ssam 1535116742Ssamint 1536116742Ssamieee80211_media2rate(int mword) 1537116742Ssam{ 1538116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1539116742Ssam static const int ieeerates[] = { 1540116742Ssam -1, /* IFM_AUTO */ 1541116742Ssam 0, /* IFM_MANUAL */ 1542116742Ssam 0, /* IFM_NONE */ 1543116742Ssam 2, /* IFM_IEEE80211_FH1 */ 1544116742Ssam 4, /* IFM_IEEE80211_FH2 */ 1545116742Ssam 2, /* IFM_IEEE80211_DS1 */ 1546116742Ssam 4, /* IFM_IEEE80211_DS2 */ 1547116742Ssam 11, /* IFM_IEEE80211_DS5 */ 1548116742Ssam 22, /* IFM_IEEE80211_DS11 */ 1549116742Ssam 44, /* IFM_IEEE80211_DS22 */ 1550116742Ssam 12, /* IFM_IEEE80211_OFDM6 */ 1551116742Ssam 18, /* IFM_IEEE80211_OFDM9 */ 1552116742Ssam 24, /* IFM_IEEE80211_OFDM12 */ 1553116742Ssam 36, /* IFM_IEEE80211_OFDM18 */ 1554116742Ssam 48, /* IFM_IEEE80211_OFDM24 */ 1555116742Ssam 72, /* IFM_IEEE80211_OFDM36 */ 1556116742Ssam 96, /* IFM_IEEE80211_OFDM48 */ 1557116742Ssam 108, /* IFM_IEEE80211_OFDM54 */ 1558116742Ssam 144, /* IFM_IEEE80211_OFDM72 */ 1559165569Ssam 0, /* IFM_IEEE80211_DS354k */ 1560165569Ssam 0, /* IFM_IEEE80211_DS512k */ 1561165569Ssam 6, /* IFM_IEEE80211_OFDM3 */ 1562165569Ssam 9, /* IFM_IEEE80211_OFDM4 */ 1563165569Ssam 54, /* IFM_IEEE80211_OFDM27 */ 1564170530Ssam -1, /* IFM_IEEE80211_MCS */ 1565116742Ssam }; 1566116742Ssam return IFM_SUBTYPE(mword) < N(ieeerates) ? 1567116742Ssam ieeerates[IFM_SUBTYPE(mword)] : 0; 1568116742Ssam#undef N 1569116742Ssam} 1570