ieee80211.c revision 195379
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 195379 2009-07-05 18:17:37Z 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 271195379Ssam ic->ic_hash_key = arc4random(); 272155688Ssam ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 273155688Ssam ic->ic_lintval = ic->ic_bintval; 274138568Ssam ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 275138568Ssam 276170530Ssam ieee80211_crypto_attach(ic); 277138568Ssam ieee80211_node_attach(ic); 278170530Ssam ieee80211_power_attach(ic); 279138568Ssam ieee80211_proto_attach(ic); 280190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 281190391Ssam ieee80211_superg_attach(ic); 282190391Ssam#endif 283170530Ssam ieee80211_ht_attach(ic); 284170530Ssam ieee80211_scan_attach(ic); 285178354Ssam ieee80211_regdomain_attach(ic); 286193843Ssam ieee80211_dfs_attach(ic); 287138568Ssam 288178354Ssam ieee80211_sysctl_attach(ic); 289138568Ssam 290178354Ssam ifp->if_addrlen = IEEE80211_ADDR_LEN; 291178354Ssam ifp->if_hdrlen = 0; 292178354Ssam if_attach(ifp); 293178354Ssam ifp->if_mtu = IEEE80211_MTU_MAX; 294178354Ssam ifp->if_broadcastaddr = ieee80211broadcastaddr; 295178521Ssam ifp->if_output = null_output; 296178521Ssam ifp->if_input = null_input; /* just in case */ 297178521Ssam ifp->if_resolvemulti = NULL; /* NB: callers check */ 298140915Ssam 299178354Ssam ifa = ifaddr_byindex(ifp->if_index); 300178354Ssam KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 301178354Ssam sdl = (struct sockaddr_dl *)ifa->ifa_addr; 302178354Ssam sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */ 303178354Ssam sdl->sdl_alen = IEEE80211_ADDR_LEN; 304190526Ssam IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr); 305194760Srwatson ifa_free(ifa); 306116742Ssam} 307116742Ssam 308178354Ssam/* 309178354Ssam * Detach net80211 state on device detach. Tear down 310178354Ssam * all vap's and reclaim all common state prior to the 311178354Ssam * device state going away. Note we may call back into 312178354Ssam * driver; it must be prepared for this. 313178354Ssam */ 314116742Ssamvoid 315138568Ssamieee80211_ifdetach(struct ieee80211com *ic) 316116742Ssam{ 317138568Ssam struct ifnet *ifp = ic->ic_ifp; 318178354Ssam struct ieee80211vap *vap; 319116742Ssam 320193337Ssam if_detach(ifp); 321193337Ssam 322178354Ssam while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) 323178354Ssam ieee80211_vap_destroy(vap); 324188533Sthompsa ieee80211_waitfor_parent(ic); 325138568Ssam 326138568Ssam ieee80211_sysctl_detach(ic); 327193843Ssam ieee80211_dfs_detach(ic); 328178354Ssam ieee80211_regdomain_detach(ic); 329170530Ssam ieee80211_scan_detach(ic); 330190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 331190391Ssam ieee80211_superg_detach(ic); 332190391Ssam#endif 333170530Ssam ieee80211_ht_detach(ic); 334166012Ssam /* NB: must be called before ieee80211_node_detach */ 335138568Ssam ieee80211_proto_detach(ic); 336138568Ssam ieee80211_crypto_detach(ic); 337170530Ssam ieee80211_power_detach(ic); 338138568Ssam ieee80211_node_detach(ic); 339193337Ssam 340116742Ssam ifmedia_removeall(&ic->ic_media); 341191746Sthompsa taskqueue_free(ic->ic_tq); 342170530Ssam IEEE80211_LOCK_DESTROY(ic); 343178354Ssam} 344138568Ssam 345178354Ssam/* 346178354Ssam * Default reset method for use with the ioctl support. This 347178354Ssam * method is invoked after any state change in the 802.11 348178354Ssam * layer that should be propagated to the hardware but not 349178354Ssam * require re-initialization of the 802.11 state machine (e.g 350178354Ssam * rescanning for an ap). We always return ENETRESET which 351178354Ssam * should cause the driver to re-initialize the device. Drivers 352178354Ssam * can override this method to implement more optimized support. 353178354Ssam */ 354178354Ssamstatic int 355178354Ssamdefault_reset(struct ieee80211vap *vap, u_long cmd) 356178354Ssam{ 357178354Ssam return ENETRESET; 358178354Ssam} 359178354Ssam 360178354Ssam/* 361178354Ssam * Prepare a vap for use. Drivers use this call to 362178354Ssam * setup net80211 state in new vap's prior attaching 363178354Ssam * them with ieee80211_vap_attach (below). 364178354Ssam */ 365178354Ssamint 366178354Ssamieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, 367178354Ssam const char name[IFNAMSIZ], int unit, int opmode, int flags, 368178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], 369178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 370178354Ssam{ 371178354Ssam struct ifnet *ifp; 372178354Ssam 373178354Ssam ifp = if_alloc(IFT_ETHER); 374178354Ssam if (ifp == NULL) { 375178354Ssam if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n", 376178354Ssam __func__); 377178354Ssam return ENOMEM; 378178354Ssam } 379178354Ssam if_initname(ifp, name, unit); 380178354Ssam ifp->if_softc = vap; /* back pointer */ 381178354Ssam ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 382178354Ssam ifp->if_start = ieee80211_start; 383178354Ssam ifp->if_ioctl = ieee80211_ioctl; 384178354Ssam ifp->if_watchdog = NULL; /* NB: no watchdog routine */ 385178354Ssam ifp->if_init = ieee80211_init; 386178354Ssam /* NB: input+output filled in by ether_ifattach */ 387178354Ssam IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 388178354Ssam ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 389178354Ssam IFQ_SET_READY(&ifp->if_snd); 390178354Ssam 391178354Ssam vap->iv_ifp = ifp; 392178354Ssam vap->iv_ic = ic; 393178354Ssam vap->iv_flags = ic->ic_flags; /* propagate common flags */ 394178354Ssam vap->iv_flags_ext = ic->ic_flags_ext; 395178354Ssam vap->iv_flags_ven = ic->ic_flags_ven; 396178354Ssam vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 397178354Ssam vap->iv_htcaps = ic->ic_htcaps; 398178354Ssam vap->iv_opmode = opmode; 399178957Ssam vap->iv_caps |= ieee80211_opcap[opmode]; 400178354Ssam switch (opmode) { 401178354Ssam case IEEE80211_M_WDS: 402178354Ssam /* 403178354Ssam * WDS links must specify the bssid of the far end. 404178354Ssam * For legacy operation this is a static relationship. 405178354Ssam * For non-legacy operation the station must associate 406178354Ssam * and be authorized to pass traffic. Plumbing the 407178354Ssam * vap to the proper node happens when the vap 408178354Ssam * transitions to RUN state. 409178354Ssam */ 410178354Ssam IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 411178354Ssam vap->iv_flags |= IEEE80211_F_DESBSSID; 412178354Ssam if (flags & IEEE80211_CLONE_WDSLEGACY) 413178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 414178354Ssam break; 415186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 416186904Ssam case IEEE80211_M_AHDEMO: 417186904Ssam if (flags & IEEE80211_CLONE_TDMA) { 418186904Ssam /* NB: checked before clone operation allowed */ 419186904Ssam KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 420186904Ssam ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 421186904Ssam /* 422186904Ssam * Propagate TDMA capability to mark vap; this 423186904Ssam * cannot be removed and is used to distinguish 424186904Ssam * regular ahdemo operation from ahdemo+tdma. 425186904Ssam */ 426186904Ssam vap->iv_caps |= IEEE80211_C_TDMA; 427186904Ssam } 428186904Ssam break; 429186904Ssam#endif 430178354Ssam } 431184278Ssam /* auto-enable s/w beacon miss support */ 432184278Ssam if (flags & IEEE80211_CLONE_NOBEACONS) 433184278Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 434178354Ssam /* 435178354Ssam * Enable various functionality by default if we're 436178354Ssam * capable; the driver can override us if it knows better. 437178354Ssam */ 438178354Ssam if (vap->iv_caps & IEEE80211_C_WME) 439178354Ssam vap->iv_flags |= IEEE80211_F_WME; 440178354Ssam if (vap->iv_caps & IEEE80211_C_BURST) 441178354Ssam vap->iv_flags |= IEEE80211_F_BURST; 442178354Ssam /* NB: bg scanning only makes sense for station mode right now */ 443178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 444178354Ssam (vap->iv_caps & IEEE80211_C_BGSCAN)) 445178354Ssam vap->iv_flags |= IEEE80211_F_BGSCAN; 446178957Ssam vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 447178954Ssam /* NB: DFS support only makes sense for ap mode right now */ 448178954Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 449178954Ssam (vap->iv_caps & IEEE80211_C_DFS)) 450178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 451178354Ssam 452178354Ssam vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 453178354Ssam vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 454178354Ssam vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 455178354Ssam /* 456178354Ssam * Install a default reset method for the ioctl support; 457178354Ssam * the driver can override this. 458178354Ssam */ 459178354Ssam vap->iv_reset = default_reset; 460178354Ssam 461178354Ssam IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr); 462178354Ssam 463178354Ssam ieee80211_sysctl_vattach(vap); 464178354Ssam ieee80211_crypto_vattach(vap); 465178354Ssam ieee80211_node_vattach(vap); 466178354Ssam ieee80211_power_vattach(vap); 467178354Ssam ieee80211_proto_vattach(vap); 468190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 469190391Ssam ieee80211_superg_vattach(vap); 470190391Ssam#endif 471178354Ssam ieee80211_ht_vattach(vap); 472178354Ssam ieee80211_scan_vattach(vap); 473178354Ssam ieee80211_regdomain_vattach(vap); 474192468Ssam ieee80211_radiotap_vattach(vap); 475178354Ssam 476178354Ssam return 0; 477178354Ssam} 478178354Ssam 479178354Ssam/* 480178354Ssam * Activate a vap. State should have been prepared with a 481178354Ssam * call to ieee80211_vap_setup and by the driver. On return 482178354Ssam * from this call the vap is ready for use. 483178354Ssam */ 484178354Ssamint 485178354Ssamieee80211_vap_attach(struct ieee80211vap *vap, 486178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 487178354Ssam{ 488178354Ssam struct ifnet *ifp = vap->iv_ifp; 489178354Ssam struct ieee80211com *ic = vap->iv_ic; 490178354Ssam struct ifmediareq imr; 491178354Ssam int maxrate; 492178354Ssam 493178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 494178354Ssam "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 495178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 496178354Ssam ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext); 497178354Ssam 498178354Ssam /* 499178354Ssam * Do late attach work that cannot happen until after 500178354Ssam * the driver has had a chance to override defaults. 501178354Ssam */ 502178354Ssam ieee80211_node_latevattach(vap); 503178354Ssam ieee80211_power_latevattach(vap); 504178354Ssam 505178354Ssam maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 506178354Ssam vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 507178354Ssam ieee80211_media_status(ifp, &imr); 508178354Ssam /* NB: strip explicit mode; we're actually in autoselect */ 509188106Ssam ifmedia_set(&vap->iv_media, 510188106Ssam imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 511178354Ssam if (maxrate) 512178354Ssam ifp->if_baudrate = IF_Mbps(maxrate); 513178354Ssam 514178354Ssam ether_ifattach(ifp, vap->iv_myaddr); 515178354Ssam /* hook output method setup by ether_ifattach */ 516178354Ssam vap->iv_output = ifp->if_output; 517178354Ssam ifp->if_output = ieee80211_output; 518178354Ssam /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 519178354Ssam 520178354Ssam IEEE80211_LOCK(ic); 521178354Ssam TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 522178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 523190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 524178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 525190391Ssam#endif 526178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 527178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 528193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 529193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 530178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 531178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 532178354Ssam IEEE80211_UNLOCK(ic); 533178354Ssam 534178354Ssam return 1; 535178354Ssam} 536178354Ssam 537178354Ssam/* 538178354Ssam * Tear down vap state and reclaim the ifnet. 539178354Ssam * The driver is assumed to have prepared for 540178354Ssam * this; e.g. by turning off interrupts for the 541178354Ssam * underlying device. 542178354Ssam */ 543178354Ssamvoid 544178354Ssamieee80211_vap_detach(struct ieee80211vap *vap) 545178354Ssam{ 546178354Ssam struct ieee80211com *ic = vap->iv_ic; 547178354Ssam struct ifnet *ifp = vap->iv_ifp; 548178354Ssam 549178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 550178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 551178354Ssam ic->ic_ifp->if_xname); 552178354Ssam 553193312Ssam /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 554193312Ssam ether_ifdetach(ifp); 555178354Ssam 556193312Ssam ieee80211_stop(vap); 557193312Ssam 558191746Sthompsa /* 559191746Sthompsa * Flush any deferred vap tasks. 560191746Sthompsa * NB: must be before ether_ifdetach() and removal from ic_vaps list 561191746Sthompsa */ 562191746Sthompsa ieee80211_draintask(ic, &vap->iv_nstate_task); 563191746Sthompsa ieee80211_draintask(ic, &vap->iv_swbmiss_task); 564191746Sthompsa 565191746Sthompsa IEEE80211_LOCK(ic); 566191746Sthompsa KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 567178354Ssam TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 568178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 569190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 570178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 571190391Ssam#endif 572178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 573178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 574193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 575193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 576192468Ssam /* NB: this handles the bpfdetach done below */ 577192468Ssam ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 578178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 579178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 580178354Ssam IEEE80211_UNLOCK(ic); 581178354Ssam 582178354Ssam ifmedia_removeall(&vap->iv_media); 583178354Ssam 584192468Ssam ieee80211_radiotap_vdetach(vap); 585178354Ssam ieee80211_regdomain_vdetach(vap); 586178354Ssam ieee80211_scan_vdetach(vap); 587190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 588190391Ssam ieee80211_superg_vdetach(vap); 589190391Ssam#endif 590178354Ssam ieee80211_ht_vdetach(vap); 591178354Ssam /* NB: must be before ieee80211_node_vdetach */ 592178354Ssam ieee80211_proto_vdetach(vap); 593178354Ssam ieee80211_crypto_vdetach(vap); 594178354Ssam ieee80211_power_vdetach(vap); 595178354Ssam ieee80211_node_vdetach(vap); 596178354Ssam ieee80211_sysctl_vdetach(vap); 597182674Sweongyo 598182674Sweongyo if_free(ifp); 599116742Ssam} 600116742Ssam 601178354Ssam/* 602178354Ssam * Synchronize flag bit state in the parent ifnet structure 603178354Ssam * according to the state of all vap ifnet's. This is used, 604178354Ssam * for example, to handle IFF_PROMISC and IFF_ALLMULTI. 605178354Ssam */ 606178354Ssamvoid 607178354Ssamieee80211_syncifflag_locked(struct ieee80211com *ic, int flag) 608178354Ssam{ 609178354Ssam struct ifnet *ifp = ic->ic_ifp; 610178354Ssam struct ieee80211vap *vap; 611178354Ssam int bit, oflags; 612178354Ssam 613178354Ssam IEEE80211_LOCK_ASSERT(ic); 614178354Ssam 615178354Ssam bit = 0; 616178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 617178354Ssam if (vap->iv_ifp->if_flags & flag) { 618178354Ssam /* 619178354Ssam * XXX the bridge sets PROMISC but we don't want to 620178354Ssam * enable it on the device, discard here so all the 621178354Ssam * drivers don't need to special-case it 622178354Ssam */ 623178354Ssam if (flag == IFF_PROMISC && 624178354Ssam vap->iv_opmode == IEEE80211_M_HOSTAP) 625178354Ssam continue; 626178354Ssam bit = 1; 627178354Ssam break; 628178354Ssam } 629178354Ssam oflags = ifp->if_flags; 630178354Ssam if (bit) 631178354Ssam ifp->if_flags |= flag; 632178354Ssam else 633178354Ssam ifp->if_flags &= ~flag; 634178354Ssam if ((ifp->if_flags ^ oflags) & flag) { 635178354Ssam /* XXX should we return 1/0 and let caller do this? */ 636178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 637178354Ssam if (flag == IFF_PROMISC) 638191746Sthompsa ieee80211_runtask(ic, &ic->ic_promisc_task); 639178354Ssam else if (flag == IFF_ALLMULTI) 640191746Sthompsa ieee80211_runtask(ic, &ic->ic_mcast_task); 641178354Ssam } 642178354Ssam } 643178354Ssam} 644178354Ssam 645178354Ssam/* 646178354Ssam * Synchronize flag bit state in the com structure 647178354Ssam * according to the state of all vap's. This is used, 648178354Ssam * for example, to handle state changes via ioctls. 649178354Ssam */ 650178354Ssamstatic void 651178354Ssamieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 652178354Ssam{ 653178354Ssam struct ieee80211vap *vap; 654178354Ssam int bit; 655178354Ssam 656178354Ssam IEEE80211_LOCK_ASSERT(ic); 657178354Ssam 658178354Ssam bit = 0; 659178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 660178354Ssam if (vap->iv_flags & flag) { 661178354Ssam bit = 1; 662178354Ssam break; 663178354Ssam } 664178354Ssam if (bit) 665178354Ssam ic->ic_flags |= flag; 666178354Ssam else 667178354Ssam ic->ic_flags &= ~flag; 668178354Ssam} 669178354Ssam 670178354Ssamvoid 671178354Ssamieee80211_syncflag(struct ieee80211vap *vap, int flag) 672178354Ssam{ 673178354Ssam struct ieee80211com *ic = vap->iv_ic; 674178354Ssam 675178354Ssam IEEE80211_LOCK(ic); 676178354Ssam if (flag < 0) { 677178354Ssam flag = -flag; 678178354Ssam vap->iv_flags &= ~flag; 679178354Ssam } else 680178354Ssam vap->iv_flags |= flag; 681178354Ssam ieee80211_syncflag_locked(ic, flag); 682178354Ssam IEEE80211_UNLOCK(ic); 683178354Ssam} 684178354Ssam 685178354Ssam/* 686193655Ssam * Synchronize flags_ht bit state in the com structure 687178354Ssam * according to the state of all vap's. This is used, 688178354Ssam * for example, to handle state changes via ioctls. 689178354Ssam */ 690178354Ssamstatic void 691193655Ssamieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 692193655Ssam{ 693193655Ssam struct ieee80211vap *vap; 694193655Ssam int bit; 695193655Ssam 696193655Ssam IEEE80211_LOCK_ASSERT(ic); 697193655Ssam 698193655Ssam bit = 0; 699193655Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 700193655Ssam if (vap->iv_flags_ht & flag) { 701193655Ssam bit = 1; 702193655Ssam break; 703193655Ssam } 704193655Ssam if (bit) 705193655Ssam ic->ic_flags_ht |= flag; 706193655Ssam else 707193655Ssam ic->ic_flags_ht &= ~flag; 708193655Ssam} 709193655Ssam 710193655Ssamvoid 711193655Ssamieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 712193655Ssam{ 713193655Ssam struct ieee80211com *ic = vap->iv_ic; 714193655Ssam 715193655Ssam IEEE80211_LOCK(ic); 716193655Ssam if (flag < 0) { 717193655Ssam flag = -flag; 718193655Ssam vap->iv_flags_ht &= ~flag; 719193655Ssam } else 720193655Ssam vap->iv_flags_ht |= flag; 721193655Ssam ieee80211_syncflag_ht_locked(ic, flag); 722193655Ssam IEEE80211_UNLOCK(ic); 723193655Ssam} 724193655Ssam 725193655Ssam/* 726193655Ssam * Synchronize flags_ext bit state in the com structure 727193655Ssam * according to the state of all vap's. This is used, 728193655Ssam * for example, to handle state changes via ioctls. 729193655Ssam */ 730193655Ssamstatic void 731178354Ssamieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 732178354Ssam{ 733178354Ssam struct ieee80211vap *vap; 734178354Ssam int bit; 735178354Ssam 736178354Ssam IEEE80211_LOCK_ASSERT(ic); 737178354Ssam 738178354Ssam bit = 0; 739178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 740178354Ssam if (vap->iv_flags_ext & flag) { 741178354Ssam bit = 1; 742178354Ssam break; 743178354Ssam } 744178354Ssam if (bit) 745178354Ssam ic->ic_flags_ext |= flag; 746178354Ssam else 747178354Ssam ic->ic_flags_ext &= ~flag; 748178354Ssam} 749178354Ssam 750178354Ssamvoid 751178354Ssamieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 752178354Ssam{ 753178354Ssam struct ieee80211com *ic = vap->iv_ic; 754178354Ssam 755178354Ssam IEEE80211_LOCK(ic); 756178354Ssam if (flag < 0) { 757178354Ssam flag = -flag; 758178354Ssam vap->iv_flags_ext &= ~flag; 759178354Ssam } else 760178354Ssam vap->iv_flags_ext |= flag; 761178354Ssam ieee80211_syncflag_ext_locked(ic, flag); 762178354Ssam IEEE80211_UNLOCK(ic); 763178354Ssam} 764178354Ssam 765166012Ssamstatic __inline int 766166012Ssammapgsm(u_int freq, u_int flags) 767166012Ssam{ 768166012Ssam freq *= 10; 769166012Ssam if (flags & IEEE80211_CHAN_QUARTER) 770166012Ssam freq += 5; 771166012Ssam else if (flags & IEEE80211_CHAN_HALF) 772166012Ssam freq += 10; 773166012Ssam else 774166012Ssam freq += 20; 775166012Ssam /* NB: there is no 907/20 wide but leave room */ 776166012Ssam return (freq - 906*10) / 5; 777166012Ssam} 778166012Ssam 779166012Ssamstatic __inline int 780166012Ssammappsb(u_int freq, u_int flags) 781166012Ssam{ 782166012Ssam return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 783166012Ssam} 784166012Ssam 785116742Ssam/* 786116742Ssam * Convert MHz frequency to IEEE channel number. 787116742Ssam */ 788152450Ssamint 789116742Ssamieee80211_mhz2ieee(u_int freq, u_int flags) 790116742Ssam{ 791167430Ssam#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 792166012Ssam if (flags & IEEE80211_CHAN_GSM) 793166012Ssam return mapgsm(freq, flags); 794116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 795116742Ssam if (freq == 2484) 796116742Ssam return 14; 797116742Ssam if (freq < 2484) 798152450Ssam return ((int) freq - 2407) / 5; 799116742Ssam else 800116742Ssam return 15 + ((freq - 2512) / 20); 801116899Ssam } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 802165569Ssam if (freq <= 5000) { 803170530Ssam /* XXX check regdomain? */ 804167430Ssam if (IS_FREQ_IN_PSB(freq)) 805166012Ssam return mappsb(freq, flags); 806152450Ssam return (freq - 4000) / 5; 807165569Ssam } else 808152450Ssam return (freq - 5000) / 5; 809116742Ssam } else { /* either, guess */ 810116742Ssam if (freq == 2484) 811116742Ssam return 14; 812166012Ssam if (freq < 2484) { 813166012Ssam if (907 <= freq && freq <= 922) 814166012Ssam return mapgsm(freq, flags); 815152450Ssam return ((int) freq - 2407) / 5; 816166012Ssam } 817152450Ssam if (freq < 5000) { 818167430Ssam if (IS_FREQ_IN_PSB(freq)) 819166012Ssam return mappsb(freq, flags); 820165569Ssam else if (freq > 4900) 821152450Ssam return (freq - 4000) / 5; 822152450Ssam else 823152450Ssam return 15 + ((freq - 2512) / 20); 824152450Ssam } 825116742Ssam return (freq - 5000) / 5; 826116742Ssam } 827167430Ssam#undef IS_FREQ_IN_PSB 828116742Ssam} 829116742Ssam 830116742Ssam/* 831116742Ssam * Convert channel to IEEE channel number. 832116742Ssam */ 833152450Ssamint 834165825Smjacobieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 835116742Ssam{ 836170530Ssam if (c == NULL) { 837138568Ssam if_printf(ic->ic_ifp, "invalid channel (NULL)\n"); 838117039Ssam return 0; /* XXX */ 839116742Ssam } 840170530Ssam return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 841116742Ssam} 842116742Ssam 843116742Ssam/* 844116742Ssam * Convert IEEE channel number to MHz frequency. 845116742Ssam */ 846116742Ssamu_int 847116742Ssamieee80211_ieee2mhz(u_int chan, u_int flags) 848116742Ssam{ 849166012Ssam if (flags & IEEE80211_CHAN_GSM) 850166012Ssam return 907 + 5 * (chan / 10); 851116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 852116742Ssam if (chan == 14) 853116742Ssam return 2484; 854116742Ssam if (chan < 14) 855116742Ssam return 2407 + chan*5; 856116742Ssam else 857116742Ssam return 2512 + ((chan-15)*20); 858116742Ssam } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 859165569Ssam if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 860165569Ssam chan -= 37; 861165569Ssam return 4940 + chan*5 + (chan % 5 ? 2 : 0); 862165569Ssam } 863116742Ssam return 5000 + (chan*5); 864116742Ssam } else { /* either, guess */ 865166012Ssam /* XXX can't distinguish PSB+GSM channels */ 866116742Ssam if (chan == 14) 867116742Ssam return 2484; 868116742Ssam if (chan < 14) /* 0-13 */ 869116742Ssam return 2407 + chan*5; 870116742Ssam if (chan < 27) /* 15-26 */ 871116742Ssam return 2512 + ((chan-15)*20); 872116742Ssam return 5000 + (chan*5); 873116742Ssam } 874116742Ssam} 875116742Ssam 876116742Ssam/* 877170530Ssam * Locate a channel given a frequency+flags. We cache 878178354Ssam * the previous lookup to optimize switching between two 879170530Ssam * channels--as happens with dynamic turbo. 880170530Ssam */ 881170530Ssamstruct ieee80211_channel * 882170530Ssamieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 883170530Ssam{ 884170530Ssam struct ieee80211_channel *c; 885170530Ssam int i; 886170530Ssam 887170530Ssam flags &= IEEE80211_CHAN_ALLTURBO; 888170530Ssam c = ic->ic_prevchan; 889170530Ssam if (c != NULL && c->ic_freq == freq && 890170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 891170530Ssam return c; 892170530Ssam /* brute force search */ 893170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 894170530Ssam c = &ic->ic_channels[i]; 895170530Ssam if (c->ic_freq == freq && 896170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 897170530Ssam return c; 898170530Ssam } 899170530Ssam return NULL; 900170530Ssam} 901170530Ssam 902173861Ssam/* 903173861Ssam * Locate a channel given a channel number+flags. We cache 904173861Ssam * the previous lookup to optimize switching between two 905173861Ssam * channels--as happens with dynamic turbo. 906173861Ssam */ 907173861Ssamstruct ieee80211_channel * 908173861Ssamieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 909173861Ssam{ 910173861Ssam struct ieee80211_channel *c; 911173861Ssam int i; 912173861Ssam 913173861Ssam flags &= IEEE80211_CHAN_ALLTURBO; 914173861Ssam c = ic->ic_prevchan; 915173861Ssam if (c != NULL && c->ic_ieee == ieee && 916173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 917173861Ssam return c; 918173861Ssam /* brute force search */ 919173861Ssam for (i = 0; i < ic->ic_nchans; i++) { 920173861Ssam c = &ic->ic_channels[i]; 921173861Ssam if (c->ic_ieee == ieee && 922173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 923173861Ssam return c; 924173861Ssam } 925173861Ssam return NULL; 926173861Ssam} 927173861Ssam 928170530Ssamstatic void 929178354Ssamaddmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 930170530Ssam{ 931170530Ssam#define ADD(_ic, _s, _o) \ 932178354Ssam ifmedia_add(media, \ 933170530Ssam IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 934170530Ssam static const u_int mopts[IEEE80211_MODE_MAX] = { 935188106Ssam [IEEE80211_MODE_AUTO] = IFM_AUTO, 936188106Ssam [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 937188106Ssam [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 938188106Ssam [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 939188106Ssam [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 940188106Ssam [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 941188106Ssam [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 942188106Ssam [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 943188782Ssam [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 944188782Ssam [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 945188106Ssam [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 946188106Ssam [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 947170530Ssam }; 948170530Ssam u_int mopt; 949170530Ssam 950170530Ssam mopt = mopts[mode]; 951178354Ssam if (addsta) 952178354Ssam ADD(ic, mword, mopt); /* STA mode has no cap */ 953178354Ssam if (caps & IEEE80211_C_IBSS) 954178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 955178354Ssam if (caps & IEEE80211_C_HOSTAP) 956178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 957178354Ssam if (caps & IEEE80211_C_AHDEMO) 958178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 959178354Ssam if (caps & IEEE80211_C_MONITOR) 960178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 961178354Ssam if (caps & IEEE80211_C_WDS) 962178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_WDS); 963170530Ssam#undef ADD 964170530Ssam} 965170530Ssam 966170530Ssam/* 967116742Ssam * Setup the media data structures according to the channel and 968178354Ssam * rate tables. 969116742Ssam */ 970178354Ssamstatic int 971178354Ssamieee80211_media_setup(struct ieee80211com *ic, 972178354Ssam struct ifmedia *media, int caps, int addsta, 973116742Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 974116742Ssam{ 975170530Ssam int i, j, mode, rate, maxrate, mword, r; 976170530Ssam const struct ieee80211_rateset *rs; 977116742Ssam struct ieee80211_rateset allrates; 978116742Ssam 979118887Ssam /* 980116742Ssam * Fill in media characteristics. 981116742Ssam */ 982178354Ssam ifmedia_init(media, 0, media_change, media_stat); 983116742Ssam maxrate = 0; 984170530Ssam /* 985170530Ssam * Add media for legacy operating modes. 986170530Ssam */ 987116742Ssam memset(&allrates, 0, sizeof(allrates)); 988170530Ssam for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 989167468Ssam if (isclr(ic->ic_modecaps, mode)) 990116742Ssam continue; 991178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 992116742Ssam if (mode == IEEE80211_MODE_AUTO) 993116742Ssam continue; 994116742Ssam rs = &ic->ic_sup_rates[mode]; 995116742Ssam for (i = 0; i < rs->rs_nrates; i++) { 996116742Ssam rate = rs->rs_rates[i]; 997116742Ssam mword = ieee80211_rate2media(ic, rate, mode); 998116742Ssam if (mword == 0) 999116742Ssam continue; 1000178354Ssam addmedia(media, caps, addsta, mode, mword); 1001116742Ssam /* 1002170530Ssam * Add legacy rate to the collection of all rates. 1003116742Ssam */ 1004116742Ssam r = rate & IEEE80211_RATE_VAL; 1005116742Ssam for (j = 0; j < allrates.rs_nrates; j++) 1006116742Ssam if (allrates.rs_rates[j] == r) 1007116742Ssam break; 1008116742Ssam if (j == allrates.rs_nrates) { 1009116742Ssam /* unique, add to the set */ 1010116742Ssam allrates.rs_rates[j] = r; 1011116742Ssam allrates.rs_nrates++; 1012116742Ssam } 1013116742Ssam rate = (rate & IEEE80211_RATE_VAL) / 2; 1014116742Ssam if (rate > maxrate) 1015116742Ssam maxrate = rate; 1016116742Ssam } 1017116742Ssam } 1018116742Ssam for (i = 0; i < allrates.rs_nrates; i++) { 1019116742Ssam mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1020116742Ssam IEEE80211_MODE_AUTO); 1021116742Ssam if (mword == 0) 1022116742Ssam continue; 1023170530Ssam /* NB: remove media options from mword */ 1024178354Ssam addmedia(media, caps, addsta, 1025178354Ssam IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1026116742Ssam } 1027170530Ssam /* 1028170530Ssam * Add HT/11n media. Note that we do not have enough 1029170530Ssam * bits in the media subtype to express the MCS so we 1030170530Ssam * use a "placeholder" media subtype and any fixed MCS 1031170530Ssam * must be specified with a different mechanism. 1032170530Ssam */ 1033188782Ssam for (; mode <= IEEE80211_MODE_11NG; mode++) { 1034170530Ssam if (isclr(ic->ic_modecaps, mode)) 1035170530Ssam continue; 1036178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1037178354Ssam addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1038170530Ssam } 1039170530Ssam if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1040170530Ssam isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1041178354Ssam addmedia(media, caps, addsta, 1042178354Ssam IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1043170530Ssam /* XXX could walk htrates */ 1044170530Ssam /* XXX known array size */ 1045178354Ssam if (ieee80211_htrates[15].ht40_rate_400ns > maxrate) 1046178354Ssam maxrate = ieee80211_htrates[15].ht40_rate_400ns; 1047170530Ssam } 1048178354Ssam return maxrate; 1049178354Ssam} 1050116742Ssam 1051178354Ssamvoid 1052178354Ssamieee80211_media_init(struct ieee80211com *ic) 1053178354Ssam{ 1054178354Ssam struct ifnet *ifp = ic->ic_ifp; 1055178354Ssam int maxrate; 1056178354Ssam 1057178354Ssam /* NB: this works because the structure is initialized to zero */ 1058178354Ssam if (!LIST_EMPTY(&ic->ic_media.ifm_list)) { 1059178354Ssam /* 1060178354Ssam * We are re-initializing the channel list; clear 1061178354Ssam * the existing media state as the media routines 1062178354Ssam * don't suppress duplicates. 1063178354Ssam */ 1064178354Ssam ifmedia_removeall(&ic->ic_media); 1065178354Ssam } 1066178354Ssam ieee80211_chan_init(ic); 1067178354Ssam 1068178354Ssam /* 1069178354Ssam * Recalculate media settings in case new channel list changes 1070178354Ssam * the set of available modes. 1071178354Ssam */ 1072178354Ssam maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1, 1073178354Ssam ieee80211com_media_change, ieee80211com_media_status); 1074170530Ssam /* NB: strip explicit mode; we're actually in autoselect */ 1075170530Ssam ifmedia_set(&ic->ic_media, 1076188106Ssam media_status(ic->ic_opmode, ic->ic_curchan) &~ 1077188106Ssam (IFM_MMASK | IFM_IEEE80211_TURBO)); 1078116742Ssam if (maxrate) 1079116742Ssam ifp->if_baudrate = IF_Mbps(maxrate); 1080178354Ssam 1081178354Ssam /* XXX need to propagate new media settings to vap's */ 1082116742Ssam} 1083116742Ssam 1084188782Ssam/* XXX inline or eliminate? */ 1085165569Ssamconst struct ieee80211_rateset * 1086165569Ssamieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1087165569Ssam{ 1088188774Ssam /* XXX does this work for 11ng basic rates? */ 1089170530Ssam return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1090165569Ssam} 1091165569Ssam 1092138568Ssamvoid 1093138568Ssamieee80211_announce(struct ieee80211com *ic) 1094138568Ssam{ 1095138568Ssam struct ifnet *ifp = ic->ic_ifp; 1096138568Ssam int i, mode, rate, mword; 1097170530Ssam const struct ieee80211_rateset *rs; 1098138568Ssam 1099172227Ssam /* NB: skip AUTO since it has no rates */ 1100172227Ssam for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1101167468Ssam if (isclr(ic->ic_modecaps, mode)) 1102138568Ssam continue; 1103138568Ssam if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 1104138568Ssam rs = &ic->ic_sup_rates[mode]; 1105138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 1106170530Ssam mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1107138568Ssam if (mword == 0) 1108138568Ssam continue; 1109170530Ssam rate = ieee80211_media2rate(mword); 1110138568Ssam printf("%s%d%sMbps", (i != 0 ? " " : ""), 1111170530Ssam rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1112138568Ssam } 1113138568Ssam printf("\n"); 1114138568Ssam } 1115170530Ssam ieee80211_ht_announce(ic); 1116138568Ssam} 1117138568Ssam 1118170530Ssamvoid 1119170530Ssamieee80211_announce_channels(struct ieee80211com *ic) 1120116742Ssam{ 1121170530Ssam const struct ieee80211_channel *c; 1122170530Ssam char type; 1123170530Ssam int i, cw; 1124170530Ssam 1125170530Ssam printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1126170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 1127170530Ssam c = &ic->ic_channels[i]; 1128170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 1129170530Ssam type = 'S'; 1130170530Ssam else if (IEEE80211_IS_CHAN_108A(c)) 1131170530Ssam type = 'T'; 1132170530Ssam else if (IEEE80211_IS_CHAN_108G(c)) 1133170530Ssam type = 'G'; 1134170530Ssam else if (IEEE80211_IS_CHAN_HT(c)) 1135170530Ssam type = 'n'; 1136170530Ssam else if (IEEE80211_IS_CHAN_A(c)) 1137170530Ssam type = 'a'; 1138170530Ssam else if (IEEE80211_IS_CHAN_ANYG(c)) 1139170530Ssam type = 'g'; 1140170530Ssam else if (IEEE80211_IS_CHAN_B(c)) 1141170530Ssam type = 'b'; 1142170530Ssam else 1143170530Ssam type = 'f'; 1144170530Ssam if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1145170530Ssam cw = 40; 1146170530Ssam else if (IEEE80211_IS_CHAN_HALF(c)) 1147170530Ssam cw = 10; 1148170530Ssam else if (IEEE80211_IS_CHAN_QUARTER(c)) 1149170530Ssam cw = 5; 1150170530Ssam else 1151170530Ssam cw = 20; 1152170530Ssam printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 1153170530Ssam , c->ic_ieee, c->ic_freq, type 1154170530Ssam , cw 1155170530Ssam , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 1156170530Ssam IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 1157170530Ssam , c->ic_maxregpower 1158170530Ssam , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 1159170530Ssam , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 1160170530Ssam ); 1161170530Ssam } 1162116742Ssam} 1163116742Ssam 1164170530Ssamstatic int 1165184273Ssammedia2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 1166170530Ssam{ 1167116742Ssam switch (IFM_MODE(ime->ifm_media)) { 1168116742Ssam case IFM_IEEE80211_11A: 1169178354Ssam *mode = IEEE80211_MODE_11A; 1170116742Ssam break; 1171116742Ssam case IFM_IEEE80211_11B: 1172178354Ssam *mode = IEEE80211_MODE_11B; 1173116742Ssam break; 1174116742Ssam case IFM_IEEE80211_11G: 1175178354Ssam *mode = IEEE80211_MODE_11G; 1176116742Ssam break; 1177124543Sonoe case IFM_IEEE80211_FH: 1178178354Ssam *mode = IEEE80211_MODE_FH; 1179124543Sonoe break; 1180170530Ssam case IFM_IEEE80211_11NA: 1181178354Ssam *mode = IEEE80211_MODE_11NA; 1182170530Ssam break; 1183170530Ssam case IFM_IEEE80211_11NG: 1184178354Ssam *mode = IEEE80211_MODE_11NG; 1185170530Ssam break; 1186116742Ssam case IFM_AUTO: 1187178354Ssam *mode = IEEE80211_MODE_AUTO; 1188116742Ssam break; 1189116742Ssam default: 1190178354Ssam return 0; 1191116742Ssam } 1192116742Ssam /* 1193138568Ssam * Turbo mode is an ``option''. 1194138568Ssam * XXX does not apply to AUTO 1195116742Ssam */ 1196116742Ssam if (ime->ifm_media & IFM_IEEE80211_TURBO) { 1197178354Ssam if (*mode == IEEE80211_MODE_11A) { 1198184273Ssam if (flags & IEEE80211_F_TURBOP) 1199178354Ssam *mode = IEEE80211_MODE_TURBO_A; 1200170530Ssam else 1201178354Ssam *mode = IEEE80211_MODE_STURBO_A; 1202178354Ssam } else if (*mode == IEEE80211_MODE_11G) 1203178354Ssam *mode = IEEE80211_MODE_TURBO_G; 1204138568Ssam else 1205178354Ssam return 0; 1206116742Ssam } 1207170530Ssam /* XXX HT40 +/- */ 1208178354Ssam return 1; 1209178354Ssam} 1210116742Ssam 1211178354Ssam/* 1212184273Ssam * Handle a media change request on the underlying interface. 1213178354Ssam */ 1214178354Ssamint 1215178354Ssamieee80211com_media_change(struct ifnet *ifp) 1216178354Ssam{ 1217184273Ssam return EINVAL; 1218178354Ssam} 1219116742Ssam 1220178354Ssam/* 1221178354Ssam * Handle a media change request on the vap interface. 1222178354Ssam */ 1223178354Ssamint 1224178354Ssamieee80211_media_change(struct ifnet *ifp) 1225178354Ssam{ 1226178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1227178354Ssam struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 1228184273Ssam uint16_t newmode; 1229178354Ssam 1230184273Ssam if (!media2mode(ime, vap->iv_flags, &newmode)) 1231178354Ssam return EINVAL; 1232184273Ssam if (vap->iv_des_mode != newmode) { 1233184273Ssam vap->iv_des_mode = newmode; 1234193340Ssam /* XXX kick state machine if up+running */ 1235178354Ssam } 1236178354Ssam return 0; 1237116742Ssam} 1238116742Ssam 1239170530Ssam/* 1240170530Ssam * Common code to calculate the media status word 1241170530Ssam * from the operating mode and channel state. 1242170530Ssam */ 1243170530Ssamstatic int 1244170530Ssammedia_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 1245170530Ssam{ 1246170530Ssam int status; 1247170530Ssam 1248170530Ssam status = IFM_IEEE80211; 1249170530Ssam switch (opmode) { 1250170530Ssam case IEEE80211_M_STA: 1251170530Ssam break; 1252170530Ssam case IEEE80211_M_IBSS: 1253170530Ssam status |= IFM_IEEE80211_ADHOC; 1254170530Ssam break; 1255170530Ssam case IEEE80211_M_HOSTAP: 1256170530Ssam status |= IFM_IEEE80211_HOSTAP; 1257170530Ssam break; 1258170530Ssam case IEEE80211_M_MONITOR: 1259170530Ssam status |= IFM_IEEE80211_MONITOR; 1260170530Ssam break; 1261170530Ssam case IEEE80211_M_AHDEMO: 1262170530Ssam status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1263170530Ssam break; 1264170530Ssam case IEEE80211_M_WDS: 1265178354Ssam status |= IFM_IEEE80211_WDS; 1266170530Ssam break; 1267170530Ssam } 1268170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) { 1269170530Ssam status |= IFM_IEEE80211_11NA; 1270170530Ssam } else if (IEEE80211_IS_CHAN_HTG(chan)) { 1271170530Ssam status |= IFM_IEEE80211_11NG; 1272170530Ssam } else if (IEEE80211_IS_CHAN_A(chan)) { 1273170530Ssam status |= IFM_IEEE80211_11A; 1274170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 1275170530Ssam status |= IFM_IEEE80211_11B; 1276170530Ssam } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 1277170530Ssam status |= IFM_IEEE80211_11G; 1278170530Ssam } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 1279170530Ssam status |= IFM_IEEE80211_FH; 1280170530Ssam } 1281170530Ssam /* XXX else complain? */ 1282170530Ssam 1283170530Ssam if (IEEE80211_IS_CHAN_TURBO(chan)) 1284170530Ssam status |= IFM_IEEE80211_TURBO; 1285178354Ssam#if 0 1286178354Ssam if (IEEE80211_IS_CHAN_HT20(chan)) 1287178354Ssam status |= IFM_IEEE80211_HT20; 1288178354Ssam if (IEEE80211_IS_CHAN_HT40(chan)) 1289178354Ssam status |= IFM_IEEE80211_HT40; 1290178354Ssam#endif 1291170530Ssam return status; 1292170530Ssam} 1293170530Ssam 1294178354Ssamstatic void 1295178354Ssamieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1296178354Ssam{ 1297178354Ssam struct ieee80211com *ic = ifp->if_l2com; 1298178354Ssam struct ieee80211vap *vap; 1299178354Ssam 1300178354Ssam imr->ifm_status = IFM_AVALID; 1301178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1302178354Ssam if (vap->iv_ifp->if_flags & IFF_UP) { 1303178354Ssam imr->ifm_status |= IFM_ACTIVE; 1304178354Ssam break; 1305178354Ssam } 1306178354Ssam imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan); 1307178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1308178354Ssam imr->ifm_current = imr->ifm_active; 1309178354Ssam} 1310178354Ssam 1311116742Ssamvoid 1312116742Ssamieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1313116742Ssam{ 1314178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1315178354Ssam struct ieee80211com *ic = vap->iv_ic; 1316170530Ssam enum ieee80211_phymode mode; 1317116742Ssam 1318116742Ssam imr->ifm_status = IFM_AVALID; 1319170530Ssam /* 1320170530Ssam * NB: use the current channel's mode to lock down a xmit 1321170530Ssam * rate only when running; otherwise we may have a mismatch 1322170530Ssam * in which case the rate will not be convertible. 1323170530Ssam */ 1324178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1325116742Ssam imr->ifm_status |= IFM_ACTIVE; 1326170530Ssam mode = ieee80211_chan2mode(ic->ic_curchan); 1327170530Ssam } else 1328170530Ssam mode = IEEE80211_MODE_AUTO; 1329178354Ssam imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 1330138568Ssam /* 1331138568Ssam * Calculate a current rate if possible. 1332138568Ssam */ 1333178354Ssam if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 1334138568Ssam /* 1335138568Ssam * A fixed rate is set, report that. 1336138568Ssam */ 1337138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1338178354Ssam vap->iv_txparms[mode].ucastrate, mode); 1339178354Ssam } else if (vap->iv_opmode == IEEE80211_M_STA) { 1340138568Ssam /* 1341138568Ssam * In station mode report the current transmit rate. 1342138568Ssam */ 1343138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1344178354Ssam vap->iv_bss->ni_txrate, mode); 1345128966Sandre } else 1346138568Ssam imr->ifm_active |= IFM_AUTO; 1347178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1348178354Ssam imr->ifm_current = imr->ifm_active; 1349116742Ssam} 1350116742Ssam 1351116742Ssam/* 1352116742Ssam * Set the current phy mode and recalculate the active channel 1353116742Ssam * set based on the available channels for this mode. Also 1354116742Ssam * select a new default/current channel if the current one is 1355116742Ssam * inappropriate for this mode. 1356116742Ssam */ 1357116742Ssamint 1358116742Ssamieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 1359116742Ssam{ 1360116742Ssam /* 1361166012Ssam * Adjust basic rates in 11b/11g supported rate set. 1362166012Ssam * Note that if operating on a hal/quarter rate channel 1363166012Ssam * this is a noop as those rates sets are different 1364166012Ssam * and used instead. 1365116742Ssam */ 1366166012Ssam if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 1367178354Ssam ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 1368166012Ssam 1369116742Ssam ic->ic_curmode = mode; 1370138568Ssam ieee80211_reset_erp(ic); /* reset ERP state */ 1371138568Ssam 1372116742Ssam return 0; 1373116742Ssam} 1374116742Ssam 1375116742Ssam/* 1376170530Ssam * Return the phy mode for with the specified channel. 1377116742Ssam */ 1378116742Ssamenum ieee80211_phymode 1379170530Ssamieee80211_chan2mode(const struct ieee80211_channel *chan) 1380116742Ssam{ 1381170530Ssam 1382170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) 1383170530Ssam return IEEE80211_MODE_11NA; 1384170530Ssam else if (IEEE80211_IS_CHAN_HTG(chan)) 1385170530Ssam return IEEE80211_MODE_11NG; 1386170530Ssam else if (IEEE80211_IS_CHAN_108G(chan)) 1387170530Ssam return IEEE80211_MODE_TURBO_G; 1388170530Ssam else if (IEEE80211_IS_CHAN_ST(chan)) 1389170530Ssam return IEEE80211_MODE_STURBO_A; 1390170530Ssam else if (IEEE80211_IS_CHAN_TURBO(chan)) 1391153350Ssam return IEEE80211_MODE_TURBO_A; 1392188782Ssam else if (IEEE80211_IS_CHAN_HALF(chan)) 1393188782Ssam return IEEE80211_MODE_HALF; 1394188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(chan)) 1395188782Ssam return IEEE80211_MODE_QUARTER; 1396170530Ssam else if (IEEE80211_IS_CHAN_A(chan)) 1397116742Ssam return IEEE80211_MODE_11A; 1398170530Ssam else if (IEEE80211_IS_CHAN_ANYG(chan)) 1399116742Ssam return IEEE80211_MODE_11G; 1400170530Ssam else if (IEEE80211_IS_CHAN_B(chan)) 1401116742Ssam return IEEE80211_MODE_11B; 1402170530Ssam else if (IEEE80211_IS_CHAN_FHSS(chan)) 1403170530Ssam return IEEE80211_MODE_FH; 1404170530Ssam 1405170530Ssam /* NB: should not get here */ 1406170530Ssam printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 1407170530Ssam __func__, chan->ic_freq, chan->ic_flags); 1408170530Ssam return IEEE80211_MODE_11B; 1409116742Ssam} 1410116742Ssam 1411170530Ssamstruct ratemedia { 1412170530Ssam u_int match; /* rate + mode */ 1413170530Ssam u_int media; /* if_media rate */ 1414170530Ssam}; 1415170530Ssam 1416170530Ssamstatic int 1417170530Ssamfindmedia(const struct ratemedia rates[], int n, u_int match) 1418170530Ssam{ 1419170530Ssam int i; 1420170530Ssam 1421170530Ssam for (i = 0; i < n; i++) 1422170530Ssam if (rates[i].match == match) 1423170530Ssam return rates[i].media; 1424170530Ssam return IFM_AUTO; 1425170530Ssam} 1426170530Ssam 1427116742Ssam/* 1428170530Ssam * Convert IEEE80211 rate value to ifmedia subtype. 1429170530Ssam * Rate is either a legacy rate in units of 0.5Mbps 1430170530Ssam * or an MCS index. 1431116742Ssam */ 1432116742Ssamint 1433116742Ssamieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 1434116742Ssam{ 1435116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1436170530Ssam static const struct ratemedia rates[] = { 1437124543Sonoe { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 1438124543Sonoe { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 1439124543Sonoe { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 1440124543Sonoe { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 1441124543Sonoe { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 1442124543Sonoe { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 1443124543Sonoe { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 1444124543Sonoe { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 1445124543Sonoe { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 1446124543Sonoe { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 1447124543Sonoe { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 1448124543Sonoe { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 1449124543Sonoe { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 1450124543Sonoe { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 1451124543Sonoe { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 1452124543Sonoe { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 1453124543Sonoe { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 1454124543Sonoe { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 1455124543Sonoe { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 1456124543Sonoe { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 1457124543Sonoe { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 1458124543Sonoe { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 1459124543Sonoe { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 1460124543Sonoe { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1461124543Sonoe { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1462124543Sonoe { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1463124543Sonoe { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1464165569Ssam { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 1465165569Ssam { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 1466165569Ssam { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 1467116742Ssam /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1468116742Ssam }; 1469170530Ssam static const struct ratemedia htrates[] = { 1470170530Ssam { 0, IFM_IEEE80211_MCS }, 1471170530Ssam { 1, IFM_IEEE80211_MCS }, 1472170530Ssam { 2, IFM_IEEE80211_MCS }, 1473170530Ssam { 3, IFM_IEEE80211_MCS }, 1474170530Ssam { 4, IFM_IEEE80211_MCS }, 1475170530Ssam { 5, IFM_IEEE80211_MCS }, 1476170530Ssam { 6, IFM_IEEE80211_MCS }, 1477170530Ssam { 7, IFM_IEEE80211_MCS }, 1478170530Ssam { 8, IFM_IEEE80211_MCS }, 1479170530Ssam { 9, IFM_IEEE80211_MCS }, 1480170530Ssam { 10, IFM_IEEE80211_MCS }, 1481170530Ssam { 11, IFM_IEEE80211_MCS }, 1482170530Ssam { 12, IFM_IEEE80211_MCS }, 1483170530Ssam { 13, IFM_IEEE80211_MCS }, 1484170530Ssam { 14, IFM_IEEE80211_MCS }, 1485170530Ssam { 15, IFM_IEEE80211_MCS }, 1486170530Ssam }; 1487170530Ssam int m; 1488116742Ssam 1489170530Ssam /* 1490170530Ssam * Check 11n rates first for match as an MCS. 1491170530Ssam */ 1492170530Ssam if (mode == IEEE80211_MODE_11NA) { 1493172226Ssam if (rate & IEEE80211_RATE_MCS) { 1494172226Ssam rate &= ~IEEE80211_RATE_MCS; 1495170530Ssam m = findmedia(htrates, N(htrates), rate); 1496170530Ssam if (m != IFM_AUTO) 1497170530Ssam return m | IFM_IEEE80211_11NA; 1498170530Ssam } 1499170530Ssam } else if (mode == IEEE80211_MODE_11NG) { 1500170530Ssam /* NB: 12 is ambiguous, it will be treated as an MCS */ 1501172226Ssam if (rate & IEEE80211_RATE_MCS) { 1502172226Ssam rate &= ~IEEE80211_RATE_MCS; 1503170530Ssam m = findmedia(htrates, N(htrates), rate); 1504170530Ssam if (m != IFM_AUTO) 1505170530Ssam return m | IFM_IEEE80211_11NG; 1506170530Ssam } 1507170530Ssam } 1508170530Ssam rate &= IEEE80211_RATE_VAL; 1509116742Ssam switch (mode) { 1510116742Ssam case IEEE80211_MODE_11A: 1511188782Ssam case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 1512188782Ssam case IEEE80211_MODE_QUARTER: 1513170530Ssam case IEEE80211_MODE_11NA: 1514138568Ssam case IEEE80211_MODE_TURBO_A: 1515170530Ssam case IEEE80211_MODE_STURBO_A: 1516170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A); 1517116742Ssam case IEEE80211_MODE_11B: 1518170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B); 1519124543Sonoe case IEEE80211_MODE_FH: 1520170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH); 1521116742Ssam case IEEE80211_MODE_AUTO: 1522116742Ssam /* NB: ic may be NULL for some drivers */ 1523188775Ssam if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 1524170530Ssam return findmedia(rates, N(rates), 1525170530Ssam rate | IFM_IEEE80211_FH); 1526116742Ssam /* NB: hack, 11g matches both 11b+11a rates */ 1527116742Ssam /* fall thru... */ 1528116742Ssam case IEEE80211_MODE_11G: 1529170530Ssam case IEEE80211_MODE_11NG: 1530138568Ssam case IEEE80211_MODE_TURBO_G: 1531170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G); 1532116742Ssam } 1533116742Ssam return IFM_AUTO; 1534116742Ssam#undef N 1535116742Ssam} 1536116742Ssam 1537116742Ssamint 1538116742Ssamieee80211_media2rate(int mword) 1539116742Ssam{ 1540116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1541116742Ssam static const int ieeerates[] = { 1542116742Ssam -1, /* IFM_AUTO */ 1543116742Ssam 0, /* IFM_MANUAL */ 1544116742Ssam 0, /* IFM_NONE */ 1545116742Ssam 2, /* IFM_IEEE80211_FH1 */ 1546116742Ssam 4, /* IFM_IEEE80211_FH2 */ 1547116742Ssam 2, /* IFM_IEEE80211_DS1 */ 1548116742Ssam 4, /* IFM_IEEE80211_DS2 */ 1549116742Ssam 11, /* IFM_IEEE80211_DS5 */ 1550116742Ssam 22, /* IFM_IEEE80211_DS11 */ 1551116742Ssam 44, /* IFM_IEEE80211_DS22 */ 1552116742Ssam 12, /* IFM_IEEE80211_OFDM6 */ 1553116742Ssam 18, /* IFM_IEEE80211_OFDM9 */ 1554116742Ssam 24, /* IFM_IEEE80211_OFDM12 */ 1555116742Ssam 36, /* IFM_IEEE80211_OFDM18 */ 1556116742Ssam 48, /* IFM_IEEE80211_OFDM24 */ 1557116742Ssam 72, /* IFM_IEEE80211_OFDM36 */ 1558116742Ssam 96, /* IFM_IEEE80211_OFDM48 */ 1559116742Ssam 108, /* IFM_IEEE80211_OFDM54 */ 1560116742Ssam 144, /* IFM_IEEE80211_OFDM72 */ 1561165569Ssam 0, /* IFM_IEEE80211_DS354k */ 1562165569Ssam 0, /* IFM_IEEE80211_DS512k */ 1563165569Ssam 6, /* IFM_IEEE80211_OFDM3 */ 1564165569Ssam 9, /* IFM_IEEE80211_OFDM4 */ 1565165569Ssam 54, /* IFM_IEEE80211_OFDM27 */ 1566170530Ssam -1, /* IFM_IEEE80211_MCS */ 1567116742Ssam }; 1568116742Ssam return IFM_SUBTYPE(mword) < N(ieeerates) ? 1569116742Ssam ieeerates[IFM_SUBTYPE(mword)] : 0; 1570116742Ssam#undef N 1571116742Ssam} 1572195379Ssam 1573195379Ssam/* 1574195379Ssam * The following hash function is adapted from "Hash Functions" by Bob Jenkins 1575195379Ssam * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). 1576195379Ssam */ 1577195379Ssam#define mix(a, b, c) \ 1578195379Ssamdo { \ 1579195379Ssam a -= b; a -= c; a ^= (c >> 13); \ 1580195379Ssam b -= c; b -= a; b ^= (a << 8); \ 1581195379Ssam c -= a; c -= b; c ^= (b >> 13); \ 1582195379Ssam a -= b; a -= c; a ^= (c >> 12); \ 1583195379Ssam b -= c; b -= a; b ^= (a << 16); \ 1584195379Ssam c -= a; c -= b; c ^= (b >> 5); \ 1585195379Ssam a -= b; a -= c; a ^= (c >> 3); \ 1586195379Ssam b -= c; b -= a; b ^= (a << 10); \ 1587195379Ssam c -= a; c -= b; c ^= (b >> 15); \ 1588195379Ssam} while (/*CONSTCOND*/0) 1589195379Ssam 1590195379Ssamuint32_t 1591195379Ssamieee80211_mac_hash(const struct ieee80211com *ic, 1592195379Ssam const uint8_t addr[IEEE80211_ADDR_LEN]) 1593195379Ssam{ 1594195379Ssam uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; 1595195379Ssam 1596195379Ssam b += addr[5] << 8; 1597195379Ssam b += addr[4]; 1598195379Ssam a += addr[3] << 24; 1599195379Ssam a += addr[2] << 16; 1600195379Ssam a += addr[1] << 8; 1601195379Ssam a += addr[0]; 1602195379Ssam 1603195379Ssam mix(a, b, c); 1604195379Ssam 1605195379Ssam return c; 1606195379Ssam} 1607195379Ssam#undef mix 1608