ieee80211.c revision 254076
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 254076 2013-08-07 22:01:43Z adrian $"); 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 52206358Srpaulo#include <net80211/ieee80211_ratectl.h> 53116742Ssam 54116742Ssam#include <net/bpf.h> 55116742Ssam 56178955Ssamconst char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = { 57178955Ssam [IEEE80211_MODE_AUTO] = "auto", 58178955Ssam [IEEE80211_MODE_11A] = "11a", 59178955Ssam [IEEE80211_MODE_11B] = "11b", 60178955Ssam [IEEE80211_MODE_11G] = "11g", 61178955Ssam [IEEE80211_MODE_FH] = "FH", 62178955Ssam [IEEE80211_MODE_TURBO_A] = "turboA", 63178955Ssam [IEEE80211_MODE_TURBO_G] = "turboG", 64178955Ssam [IEEE80211_MODE_STURBO_A] = "sturboA", 65188782Ssam [IEEE80211_MODE_HALF] = "half", 66188782Ssam [IEEE80211_MODE_QUARTER] = "quarter", 67178955Ssam [IEEE80211_MODE_11NA] = "11na", 68178955Ssam [IEEE80211_MODE_11NG] = "11ng", 69116742Ssam}; 70178957Ssam/* map ieee80211_opmode to the corresponding capability bit */ 71178957Ssamconst int ieee80211_opcap[IEEE80211_OPMODE_MAX] = { 72178957Ssam [IEEE80211_M_IBSS] = IEEE80211_C_IBSS, 73178957Ssam [IEEE80211_M_WDS] = IEEE80211_C_WDS, 74178957Ssam [IEEE80211_M_STA] = IEEE80211_C_STA, 75178957Ssam [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO, 76178957Ssam [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP, 77178957Ssam [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR, 78195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 79195618Srpaulo [IEEE80211_M_MBSS] = IEEE80211_C_MBSS, 80195618Srpaulo#endif 81178957Ssam}; 82178957Ssam 83178354Ssamstatic const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] = 84178354Ssam { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 85116742Ssam 86178354Ssamstatic void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag); 87193655Ssamstatic void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag); 88178354Ssamstatic void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag); 89178354Ssamstatic int ieee80211_media_setup(struct ieee80211com *ic, 90178354Ssam struct ifmedia *media, int caps, int addsta, 91178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat); 92178354Ssamstatic void ieee80211com_media_status(struct ifnet *, struct ifmediareq *); 93178354Ssamstatic int ieee80211com_media_change(struct ifnet *); 94178354Ssamstatic int media_status(enum ieee80211_opmode, 95178354Ssam const struct ieee80211_channel *); 96178354Ssam 97178354SsamMALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state"); 98178354Ssam 99164645Ssam/* 100164645Ssam * Default supported rates for 802.11 operation (in IEEE .5Mb units). 101164645Ssam */ 102164645Ssam#define B(r) ((r) | IEEE80211_RATE_BASIC) 103164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11a = 104164645Ssam { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } }; 105165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_half = 106165569Ssam { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } }; 107165569Ssamstatic const struct ieee80211_rateset ieee80211_rateset_quarter = 108165569Ssam { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } }; 109164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11b = 110164645Ssam { 4, { B(2), B(4), B(11), B(22) } }; 111164645Ssam/* NB: OFDM rates are handled specially based on mode */ 112164645Ssamstatic const struct ieee80211_rateset ieee80211_rateset_11g = 113164645Ssam { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } }; 114164645Ssam#undef B 115164645Ssam 116140915Ssam/* 117165569Ssam * Fill in 802.11 available channel set, mark 118165569Ssam * all available channels as active, and pick 119165569Ssam * a default channel if not already specified. 120165569Ssam */ 121165569Ssamstatic void 122165569Ssamieee80211_chan_init(struct ieee80211com *ic) 123116742Ssam{ 124165569Ssam#define DEFAULTRATES(m, def) do { \ 125188782Ssam if (ic->ic_sup_rates[m].rs_nrates == 0) \ 126165574Ssam ic->ic_sup_rates[m] = def; \ 127165569Ssam} while (0) 128116742Ssam struct ieee80211_channel *c; 129116742Ssam int i; 130116742Ssam 131186107Ssam KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX, 132170530Ssam ("invalid number of channels specified: %u", ic->ic_nchans)); 133116742Ssam memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 134178354Ssam memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps)); 135167468Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO); 136170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 137116742Ssam c = &ic->ic_channels[i]; 138170530Ssam KASSERT(c->ic_flags != 0, ("channel with no flags")); 139187796Ssam /* 140187796Ssam * Help drivers that work only with frequencies by filling 141187796Ssam * in IEEE channel #'s if not already calculated. Note this 142187796Ssam * mimics similar work done in ieee80211_setregdomain when 143187796Ssam * changing regulatory state. 144187796Ssam */ 145187796Ssam if (c->ic_ieee == 0) 146187796Ssam c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags); 147187796Ssam if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0) 148187796Ssam c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq + 149187796Ssam (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20), 150187796Ssam c->ic_flags); 151187796Ssam /* default max tx power to max regulatory */ 152187796Ssam if (c->ic_maxpower == 0) 153187796Ssam c->ic_maxpower = 2*c->ic_maxregpower; 154170530Ssam setbit(ic->ic_chan_avail, c->ic_ieee); 155170530Ssam /* 156170530Ssam * Identify mode capabilities. 157170530Ssam */ 158170530Ssam if (IEEE80211_IS_CHAN_A(c)) 159170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11A); 160170530Ssam if (IEEE80211_IS_CHAN_B(c)) 161170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11B); 162170530Ssam if (IEEE80211_IS_CHAN_ANYG(c)) 163170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11G); 164170530Ssam if (IEEE80211_IS_CHAN_FHSS(c)) 165170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_FH); 166170530Ssam if (IEEE80211_IS_CHAN_108A(c)) 167170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A); 168170530Ssam if (IEEE80211_IS_CHAN_108G(c)) 169170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G); 170170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 171170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A); 172188782Ssam if (IEEE80211_IS_CHAN_HALF(c)) 173188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_HALF); 174188782Ssam if (IEEE80211_IS_CHAN_QUARTER(c)) 175188782Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER); 176170530Ssam if (IEEE80211_IS_CHAN_HTA(c)) 177170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NA); 178170530Ssam if (IEEE80211_IS_CHAN_HTG(c)) 179170530Ssam setbit(ic->ic_modecaps, IEEE80211_MODE_11NG); 180116742Ssam } 181170530Ssam /* initialize candidate channels to all available */ 182170530Ssam memcpy(ic->ic_chan_active, ic->ic_chan_avail, 183170530Ssam sizeof(ic->ic_chan_avail)); 184164645Ssam 185178354Ssam /* sort channel table to allow lookup optimizations */ 186178354Ssam ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 187178354Ssam 188178354Ssam /* invalidate any previous state */ 189170530Ssam ic->ic_bsschan = IEEE80211_CHAN_ANYC; 190172233Ssam ic->ic_prevchan = NULL; 191178354Ssam ic->ic_csa_newchan = NULL; 192170530Ssam /* arbitrarily pick the first channel */ 193170530Ssam ic->ic_curchan = &ic->ic_channels[0]; 194190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 195170530Ssam 196164645Ssam /* fillin well-known rate sets if driver has not specified */ 197165569Ssam DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b); 198165569Ssam DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g); 199165569Ssam DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a); 200165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a); 201165569Ssam DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g); 202187897Ssam DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a); 203188782Ssam DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half); 204188782Ssam DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter); 205188774Ssam DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a); 206188774Ssam DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g); 207165569Ssam 208165569Ssam /* 209219596Sbschmidt * Setup required information to fill the mcsset field, if driver did 210219596Sbschmidt * not. Assume a 2T2R setup for historic reasons. 211219596Sbschmidt */ 212219596Sbschmidt if (ic->ic_rxstream == 0) 213219596Sbschmidt ic->ic_rxstream = 2; 214219596Sbschmidt if (ic->ic_txstream == 0) 215219596Sbschmidt ic->ic_txstream = 2; 216219596Sbschmidt 217219596Sbschmidt /* 218165569Ssam * Set auto mode to reset active channel state and any desired channel. 219165569Ssam */ 220165569Ssam (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO); 221165569Ssam#undef DEFAULTRATES 222165569Ssam} 223165569Ssam 224178354Ssamstatic void 225178354Ssamnull_update_mcast(struct ifnet *ifp) 226178354Ssam{ 227178354Ssam if_printf(ifp, "need multicast update callback\n"); 228178354Ssam} 229178354Ssam 230178354Ssamstatic void 231178354Ssamnull_update_promisc(struct ifnet *ifp) 232178354Ssam{ 233178354Ssam if_printf(ifp, "need promiscuous mode update callback\n"); 234178354Ssam} 235178354Ssam 236178521Ssamstatic int 237195846Ssamnull_transmit(struct ifnet *ifp, struct mbuf *m) 238195846Ssam{ 239195846Ssam m_freem(m); 240195846Ssam ifp->if_oerrors++; 241195846Ssam return EACCES; /* XXX EIO/EPERM? */ 242195846Ssam} 243195846Ssam 244254076Sadrian#if __FreeBSD_version >= 1000031 245195846Ssamstatic int 246178521Ssamnull_output(struct ifnet *ifp, struct mbuf *m, 247249925Sglebius const struct sockaddr *dst, struct route *ro) 248254076Sadrian#else 249254076Sadrianstatic int 250254076Sadriannull_output(struct ifnet *ifp, struct mbuf *m, 251254076Sadrian struct sockaddr *dst, struct route *ro) 252254076Sadrian#endif 253178521Ssam{ 254178521Ssam if_printf(ifp, "discard raw packet\n"); 255195846Ssam return null_transmit(ifp, m); 256178521Ssam} 257178521Ssam 258178521Ssamstatic void 259178521Ssamnull_input(struct ifnet *ifp, struct mbuf *m) 260178521Ssam{ 261178521Ssam if_printf(ifp, "if_input should not be called\n"); 262178521Ssam m_freem(m); 263178521Ssam} 264178521Ssam 265233452Sadrianstatic void 266233452Sadriannull_update_chw(struct ieee80211com *ic) 267233452Sadrian{ 268233452Sadrian 269233452Sadrian if_printf(ic->ic_ifp, "%s: need callback\n", __func__); 270233452Sadrian} 271233452Sadrian 272178354Ssam/* 273178354Ssam * Attach/setup the common net80211 state. Called by 274178354Ssam * the driver on attach to prior to creating any vap's. 275178354Ssam */ 276165569Ssamvoid 277190526Ssamieee80211_ifattach(struct ieee80211com *ic, 278190526Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 279165569Ssam{ 280165569Ssam struct ifnet *ifp = ic->ic_ifp; 281178354Ssam struct sockaddr_dl *sdl; 282178354Ssam struct ifaddr *ifa; 283165569Ssam 284178354Ssam KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type)); 285165569Ssam 286179388Ssam IEEE80211_LOCK_INIT(ic, ifp->if_xname); 287248069Sadrian IEEE80211_TX_LOCK_INIT(ic, ifp->if_xname); 288178354Ssam TAILQ_INIT(&ic->ic_vaps); 289191746Sthompsa 290191746Sthompsa /* Create a taskqueue for all state changes */ 291191746Sthompsa ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO, 292191746Sthompsa taskqueue_thread_enqueue, &ic->ic_tq); 293230447Sadrian taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq", 294191746Sthompsa ifp->if_xname); 295165569Ssam /* 296165569Ssam * Fill in 802.11 available channel set, mark all 297165569Ssam * available channels as active, and pick a default 298165569Ssam * channel if not already specified. 299165569Ssam */ 300178354Ssam ieee80211_media_init(ic); 301170530Ssam 302178354Ssam ic->ic_update_mcast = null_update_mcast; 303178354Ssam ic->ic_update_promisc = null_update_promisc; 304233452Sadrian ic->ic_update_chw = null_update_chw; 305116742Ssam 306195379Ssam ic->ic_hash_key = arc4random(); 307155688Ssam ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; 308155688Ssam ic->ic_lintval = ic->ic_bintval; 309138568Ssam ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; 310138568Ssam 311170530Ssam ieee80211_crypto_attach(ic); 312138568Ssam ieee80211_node_attach(ic); 313170530Ssam ieee80211_power_attach(ic); 314138568Ssam ieee80211_proto_attach(ic); 315190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 316190391Ssam ieee80211_superg_attach(ic); 317190391Ssam#endif 318170530Ssam ieee80211_ht_attach(ic); 319170530Ssam ieee80211_scan_attach(ic); 320178354Ssam ieee80211_regdomain_attach(ic); 321193843Ssam ieee80211_dfs_attach(ic); 322138568Ssam 323178354Ssam ieee80211_sysctl_attach(ic); 324138568Ssam 325178354Ssam ifp->if_addrlen = IEEE80211_ADDR_LEN; 326178354Ssam ifp->if_hdrlen = 0; 327242149Sadrian 328242149Sadrian CURVNET_SET(vnet0); 329242149Sadrian 330178354Ssam if_attach(ifp); 331242149Sadrian 332178354Ssam ifp->if_mtu = IEEE80211_MTU_MAX; 333178354Ssam ifp->if_broadcastaddr = ieee80211broadcastaddr; 334178521Ssam ifp->if_output = null_output; 335178521Ssam ifp->if_input = null_input; /* just in case */ 336178521Ssam ifp->if_resolvemulti = NULL; /* NB: callers check */ 337140915Ssam 338178354Ssam ifa = ifaddr_byindex(ifp->if_index); 339178354Ssam KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 340178354Ssam sdl = (struct sockaddr_dl *)ifa->ifa_addr; 341178354Ssam sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */ 342178354Ssam sdl->sdl_alen = IEEE80211_ADDR_LEN; 343190526Ssam IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr); 344194760Srwatson ifa_free(ifa); 345242149Sadrian 346242149Sadrian CURVNET_RESTORE(); 347116742Ssam} 348116742Ssam 349178354Ssam/* 350178354Ssam * Detach net80211 state on device detach. Tear down 351178354Ssam * all vap's and reclaim all common state prior to the 352178354Ssam * device state going away. Note we may call back into 353178354Ssam * driver; it must be prepared for this. 354178354Ssam */ 355116742Ssamvoid 356138568Ssamieee80211_ifdetach(struct ieee80211com *ic) 357116742Ssam{ 358138568Ssam struct ifnet *ifp = ic->ic_ifp; 359178354Ssam struct ieee80211vap *vap; 360116742Ssam 361242149Sadrian /* 362242149Sadrian * This detaches the main interface, but not the vaps. 363242149Sadrian * Each VAP may be in a separate VIMAGE. 364242149Sadrian */ 365242149Sadrian CURVNET_SET(ifp->if_vnet); 366193337Ssam if_detach(ifp); 367242149Sadrian CURVNET_RESTORE(); 368193337Ssam 369242149Sadrian /* 370242149Sadrian * The VAP is responsible for setting and clearing 371242149Sadrian * the VIMAGE context. 372242149Sadrian */ 373178354Ssam while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) 374178354Ssam ieee80211_vap_destroy(vap); 375188533Sthompsa ieee80211_waitfor_parent(ic); 376138568Ssam 377138568Ssam ieee80211_sysctl_detach(ic); 378193843Ssam ieee80211_dfs_detach(ic); 379178354Ssam ieee80211_regdomain_detach(ic); 380170530Ssam ieee80211_scan_detach(ic); 381190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 382190391Ssam ieee80211_superg_detach(ic); 383190391Ssam#endif 384170530Ssam ieee80211_ht_detach(ic); 385166012Ssam /* NB: must be called before ieee80211_node_detach */ 386138568Ssam ieee80211_proto_detach(ic); 387138568Ssam ieee80211_crypto_detach(ic); 388170530Ssam ieee80211_power_detach(ic); 389138568Ssam ieee80211_node_detach(ic); 390193337Ssam 391242149Sadrian /* XXX VNET needed? */ 392116742Ssam ifmedia_removeall(&ic->ic_media); 393242149Sadrian 394191746Sthompsa taskqueue_free(ic->ic_tq); 395248069Sadrian IEEE80211_TX_LOCK_DESTROY(ic); 396170530Ssam IEEE80211_LOCK_DESTROY(ic); 397178354Ssam} 398138568Ssam 399178354Ssam/* 400178354Ssam * Default reset method for use with the ioctl support. This 401178354Ssam * method is invoked after any state change in the 802.11 402178354Ssam * layer that should be propagated to the hardware but not 403178354Ssam * require re-initialization of the 802.11 state machine (e.g 404178354Ssam * rescanning for an ap). We always return ENETRESET which 405178354Ssam * should cause the driver to re-initialize the device. Drivers 406178354Ssam * can override this method to implement more optimized support. 407178354Ssam */ 408178354Ssamstatic int 409178354Ssamdefault_reset(struct ieee80211vap *vap, u_long cmd) 410178354Ssam{ 411178354Ssam return ENETRESET; 412178354Ssam} 413178354Ssam 414178354Ssam/* 415178354Ssam * Prepare a vap for use. Drivers use this call to 416178354Ssam * setup net80211 state in new vap's prior attaching 417178354Ssam * them with ieee80211_vap_attach (below). 418178354Ssam */ 419178354Ssamint 420178354Ssamieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, 421228621Sbschmidt const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, 422228621Sbschmidt int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 423228621Sbschmidt const uint8_t macaddr[IEEE80211_ADDR_LEN]) 424178354Ssam{ 425178354Ssam struct ifnet *ifp; 426178354Ssam 427178354Ssam ifp = if_alloc(IFT_ETHER); 428178354Ssam if (ifp == NULL) { 429178354Ssam if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n", 430178354Ssam __func__); 431178354Ssam return ENOMEM; 432178354Ssam } 433178354Ssam if_initname(ifp, name, unit); 434178354Ssam ifp->if_softc = vap; /* back pointer */ 435178354Ssam ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 436178354Ssam ifp->if_start = ieee80211_start; 437178354Ssam ifp->if_ioctl = ieee80211_ioctl; 438178354Ssam ifp->if_init = ieee80211_init; 439178354Ssam /* NB: input+output filled in by ether_ifattach */ 440207554Ssobomax IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 441207554Ssobomax ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 442178354Ssam IFQ_SET_READY(&ifp->if_snd); 443178354Ssam 444178354Ssam vap->iv_ifp = ifp; 445178354Ssam vap->iv_ic = ic; 446178354Ssam vap->iv_flags = ic->ic_flags; /* propagate common flags */ 447178354Ssam vap->iv_flags_ext = ic->ic_flags_ext; 448178354Ssam vap->iv_flags_ven = ic->ic_flags_ven; 449178354Ssam vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 450178354Ssam vap->iv_htcaps = ic->ic_htcaps; 451205513Srpaulo vap->iv_htextcaps = ic->ic_htextcaps; 452178354Ssam vap->iv_opmode = opmode; 453178957Ssam vap->iv_caps |= ieee80211_opcap[opmode]; 454178354Ssam switch (opmode) { 455178354Ssam case IEEE80211_M_WDS: 456178354Ssam /* 457178354Ssam * WDS links must specify the bssid of the far end. 458178354Ssam * For legacy operation this is a static relationship. 459178354Ssam * For non-legacy operation the station must associate 460178354Ssam * and be authorized to pass traffic. Plumbing the 461178354Ssam * vap to the proper node happens when the vap 462178354Ssam * transitions to RUN state. 463178354Ssam */ 464178354Ssam IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 465178354Ssam vap->iv_flags |= IEEE80211_F_DESBSSID; 466178354Ssam if (flags & IEEE80211_CLONE_WDSLEGACY) 467178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 468178354Ssam break; 469186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 470186904Ssam case IEEE80211_M_AHDEMO: 471186904Ssam if (flags & IEEE80211_CLONE_TDMA) { 472186904Ssam /* NB: checked before clone operation allowed */ 473186904Ssam KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 474186904Ssam ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 475186904Ssam /* 476186904Ssam * Propagate TDMA capability to mark vap; this 477186904Ssam * cannot be removed and is used to distinguish 478186904Ssam * regular ahdemo operation from ahdemo+tdma. 479186904Ssam */ 480186904Ssam vap->iv_caps |= IEEE80211_C_TDMA; 481186904Ssam } 482186904Ssam break; 483186904Ssam#endif 484228621Sbschmidt default: 485228621Sbschmidt break; 486178354Ssam } 487184278Ssam /* auto-enable s/w beacon miss support */ 488184278Ssam if (flags & IEEE80211_CLONE_NOBEACONS) 489184278Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 490202612Sthompsa /* auto-generated or user supplied MAC address */ 491202612Sthompsa if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR)) 492202612Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC; 493178354Ssam /* 494178354Ssam * Enable various functionality by default if we're 495178354Ssam * capable; the driver can override us if it knows better. 496178354Ssam */ 497178354Ssam if (vap->iv_caps & IEEE80211_C_WME) 498178354Ssam vap->iv_flags |= IEEE80211_F_WME; 499178354Ssam if (vap->iv_caps & IEEE80211_C_BURST) 500178354Ssam vap->iv_flags |= IEEE80211_F_BURST; 501178354Ssam /* NB: bg scanning only makes sense for station mode right now */ 502178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 503178354Ssam (vap->iv_caps & IEEE80211_C_BGSCAN)) 504178354Ssam vap->iv_flags |= IEEE80211_F_BGSCAN; 505178957Ssam vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 506178954Ssam /* NB: DFS support only makes sense for ap mode right now */ 507178954Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 508178954Ssam (vap->iv_caps & IEEE80211_C_DFS)) 509178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 510178354Ssam 511178354Ssam vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 512178354Ssam vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 513178354Ssam vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 514178354Ssam /* 515178354Ssam * Install a default reset method for the ioctl support; 516178354Ssam * the driver can override this. 517178354Ssam */ 518178354Ssam vap->iv_reset = default_reset; 519178354Ssam 520178354Ssam IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr); 521178354Ssam 522178354Ssam ieee80211_sysctl_vattach(vap); 523178354Ssam ieee80211_crypto_vattach(vap); 524178354Ssam ieee80211_node_vattach(vap); 525178354Ssam ieee80211_power_vattach(vap); 526178354Ssam ieee80211_proto_vattach(vap); 527190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 528190391Ssam ieee80211_superg_vattach(vap); 529190391Ssam#endif 530178354Ssam ieee80211_ht_vattach(vap); 531178354Ssam ieee80211_scan_vattach(vap); 532178354Ssam ieee80211_regdomain_vattach(vap); 533192468Ssam ieee80211_radiotap_vattach(vap); 534214894Sbschmidt ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE); 535178354Ssam 536178354Ssam return 0; 537178354Ssam} 538178354Ssam 539178354Ssam/* 540178354Ssam * Activate a vap. State should have been prepared with a 541178354Ssam * call to ieee80211_vap_setup and by the driver. On return 542178354Ssam * from this call the vap is ready for use. 543178354Ssam */ 544178354Ssamint 545178354Ssamieee80211_vap_attach(struct ieee80211vap *vap, 546178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 547178354Ssam{ 548178354Ssam struct ifnet *ifp = vap->iv_ifp; 549178354Ssam struct ieee80211com *ic = vap->iv_ic; 550178354Ssam struct ifmediareq imr; 551178354Ssam int maxrate; 552178354Ssam 553178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 554178354Ssam "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 555178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 556178354Ssam ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext); 557178354Ssam 558178354Ssam /* 559178354Ssam * Do late attach work that cannot happen until after 560178354Ssam * the driver has had a chance to override defaults. 561178354Ssam */ 562178354Ssam ieee80211_node_latevattach(vap); 563178354Ssam ieee80211_power_latevattach(vap); 564178354Ssam 565178354Ssam maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 566178354Ssam vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 567178354Ssam ieee80211_media_status(ifp, &imr); 568178354Ssam /* NB: strip explicit mode; we're actually in autoselect */ 569188106Ssam ifmedia_set(&vap->iv_media, 570188106Ssam imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 571178354Ssam if (maxrate) 572178354Ssam ifp->if_baudrate = IF_Mbps(maxrate); 573178354Ssam 574178354Ssam ether_ifattach(ifp, vap->iv_myaddr); 575195846Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR) { 576195846Ssam /* NB: disallow transmit */ 577195846Ssam ifp->if_transmit = null_transmit; 578195846Ssam ifp->if_output = null_output; 579195846Ssam } else { 580195846Ssam /* hook output method setup by ether_ifattach */ 581195846Ssam vap->iv_output = ifp->if_output; 582195846Ssam ifp->if_output = ieee80211_output; 583195846Ssam } 584178354Ssam /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 585178354Ssam 586178354Ssam IEEE80211_LOCK(ic); 587178354Ssam TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 588178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 589190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 590178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 591190391Ssam#endif 592178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 593178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 594193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 595193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 596178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 597178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 598178354Ssam IEEE80211_UNLOCK(ic); 599178354Ssam 600178354Ssam return 1; 601178354Ssam} 602178354Ssam 603178354Ssam/* 604178354Ssam * Tear down vap state and reclaim the ifnet. 605178354Ssam * The driver is assumed to have prepared for 606178354Ssam * this; e.g. by turning off interrupts for the 607178354Ssam * underlying device. 608178354Ssam */ 609178354Ssamvoid 610178354Ssamieee80211_vap_detach(struct ieee80211vap *vap) 611178354Ssam{ 612178354Ssam struct ieee80211com *ic = vap->iv_ic; 613178354Ssam struct ifnet *ifp = vap->iv_ifp; 614178354Ssam 615242149Sadrian CURVNET_SET(ifp->if_vnet); 616242149Sadrian 617178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 618178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 619178354Ssam ic->ic_ifp->if_xname); 620178354Ssam 621193312Ssam /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 622193312Ssam ether_ifdetach(ifp); 623178354Ssam 624193312Ssam ieee80211_stop(vap); 625193312Ssam 626191746Sthompsa /* 627191746Sthompsa * Flush any deferred vap tasks. 628191746Sthompsa */ 629191746Sthompsa ieee80211_draintask(ic, &vap->iv_nstate_task); 630191746Sthompsa ieee80211_draintask(ic, &vap->iv_swbmiss_task); 631191746Sthompsa 632196159Ssam /* XXX band-aid until ifnet handles this for us */ 633196159Ssam taskqueue_drain(taskqueue_swi, &ifp->if_linktask); 634196159Ssam 635191746Sthompsa IEEE80211_LOCK(ic); 636191746Sthompsa KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 637178354Ssam TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 638178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 639190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 640178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 641190391Ssam#endif 642178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 643178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 644193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 645193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 646192468Ssam /* NB: this handles the bpfdetach done below */ 647192468Ssam ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 648178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 649178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 650178354Ssam IEEE80211_UNLOCK(ic); 651178354Ssam 652178354Ssam ifmedia_removeall(&vap->iv_media); 653178354Ssam 654192468Ssam ieee80211_radiotap_vdetach(vap); 655178354Ssam ieee80211_regdomain_vdetach(vap); 656178354Ssam ieee80211_scan_vdetach(vap); 657190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 658190391Ssam ieee80211_superg_vdetach(vap); 659190391Ssam#endif 660178354Ssam ieee80211_ht_vdetach(vap); 661178354Ssam /* NB: must be before ieee80211_node_vdetach */ 662178354Ssam ieee80211_proto_vdetach(vap); 663178354Ssam ieee80211_crypto_vdetach(vap); 664178354Ssam ieee80211_power_vdetach(vap); 665178354Ssam ieee80211_node_vdetach(vap); 666178354Ssam ieee80211_sysctl_vdetach(vap); 667182674Sweongyo 668182674Sweongyo if_free(ifp); 669242149Sadrian 670242149Sadrian CURVNET_RESTORE(); 671116742Ssam} 672116742Ssam 673178354Ssam/* 674178354Ssam * Synchronize flag bit state in the parent ifnet structure 675178354Ssam * according to the state of all vap ifnet's. This is used, 676178354Ssam * for example, to handle IFF_PROMISC and IFF_ALLMULTI. 677178354Ssam */ 678178354Ssamvoid 679178354Ssamieee80211_syncifflag_locked(struct ieee80211com *ic, int flag) 680178354Ssam{ 681178354Ssam struct ifnet *ifp = ic->ic_ifp; 682178354Ssam struct ieee80211vap *vap; 683178354Ssam int bit, oflags; 684178354Ssam 685178354Ssam IEEE80211_LOCK_ASSERT(ic); 686178354Ssam 687178354Ssam bit = 0; 688178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 689178354Ssam if (vap->iv_ifp->if_flags & flag) { 690178354Ssam /* 691178354Ssam * XXX the bridge sets PROMISC but we don't want to 692178354Ssam * enable it on the device, discard here so all the 693178354Ssam * drivers don't need to special-case it 694178354Ssam */ 695178354Ssam if (flag == IFF_PROMISC && 696195847Ssam !(vap->iv_opmode == IEEE80211_M_MONITOR || 697196004Ssam (vap->iv_opmode == IEEE80211_M_AHDEMO && 698196004Ssam (vap->iv_caps & IEEE80211_C_TDMA) == 0))) 699178354Ssam continue; 700178354Ssam bit = 1; 701178354Ssam break; 702178354Ssam } 703178354Ssam oflags = ifp->if_flags; 704178354Ssam if (bit) 705178354Ssam ifp->if_flags |= flag; 706178354Ssam else 707178354Ssam ifp->if_flags &= ~flag; 708178354Ssam if ((ifp->if_flags ^ oflags) & flag) { 709178354Ssam /* XXX should we return 1/0 and let caller do this? */ 710178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 711178354Ssam if (flag == IFF_PROMISC) 712191746Sthompsa ieee80211_runtask(ic, &ic->ic_promisc_task); 713178354Ssam else if (flag == IFF_ALLMULTI) 714191746Sthompsa ieee80211_runtask(ic, &ic->ic_mcast_task); 715178354Ssam } 716178354Ssam } 717178354Ssam} 718178354Ssam 719178354Ssam/* 720178354Ssam * Synchronize flag bit state in the com structure 721178354Ssam * according to the state of all vap's. This is used, 722178354Ssam * for example, to handle state changes via ioctls. 723178354Ssam */ 724178354Ssamstatic void 725178354Ssamieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 726178354Ssam{ 727178354Ssam struct ieee80211vap *vap; 728178354Ssam int bit; 729178354Ssam 730178354Ssam IEEE80211_LOCK_ASSERT(ic); 731178354Ssam 732178354Ssam bit = 0; 733178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 734178354Ssam if (vap->iv_flags & flag) { 735178354Ssam bit = 1; 736178354Ssam break; 737178354Ssam } 738178354Ssam if (bit) 739178354Ssam ic->ic_flags |= flag; 740178354Ssam else 741178354Ssam ic->ic_flags &= ~flag; 742178354Ssam} 743178354Ssam 744178354Ssamvoid 745178354Ssamieee80211_syncflag(struct ieee80211vap *vap, int flag) 746178354Ssam{ 747178354Ssam struct ieee80211com *ic = vap->iv_ic; 748178354Ssam 749178354Ssam IEEE80211_LOCK(ic); 750178354Ssam if (flag < 0) { 751178354Ssam flag = -flag; 752178354Ssam vap->iv_flags &= ~flag; 753178354Ssam } else 754178354Ssam vap->iv_flags |= flag; 755178354Ssam ieee80211_syncflag_locked(ic, flag); 756178354Ssam IEEE80211_UNLOCK(ic); 757178354Ssam} 758178354Ssam 759178354Ssam/* 760193655Ssam * Synchronize flags_ht bit state in the com structure 761178354Ssam * according to the state of all vap's. This is used, 762178354Ssam * for example, to handle state changes via ioctls. 763178354Ssam */ 764178354Ssamstatic void 765193655Ssamieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 766193655Ssam{ 767193655Ssam struct ieee80211vap *vap; 768193655Ssam int bit; 769193655Ssam 770193655Ssam IEEE80211_LOCK_ASSERT(ic); 771193655Ssam 772193655Ssam bit = 0; 773193655Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 774193655Ssam if (vap->iv_flags_ht & flag) { 775193655Ssam bit = 1; 776193655Ssam break; 777193655Ssam } 778193655Ssam if (bit) 779193655Ssam ic->ic_flags_ht |= flag; 780193655Ssam else 781193655Ssam ic->ic_flags_ht &= ~flag; 782193655Ssam} 783193655Ssam 784193655Ssamvoid 785193655Ssamieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 786193655Ssam{ 787193655Ssam struct ieee80211com *ic = vap->iv_ic; 788193655Ssam 789193655Ssam IEEE80211_LOCK(ic); 790193655Ssam if (flag < 0) { 791193655Ssam flag = -flag; 792193655Ssam vap->iv_flags_ht &= ~flag; 793193655Ssam } else 794193655Ssam vap->iv_flags_ht |= flag; 795193655Ssam ieee80211_syncflag_ht_locked(ic, flag); 796193655Ssam IEEE80211_UNLOCK(ic); 797193655Ssam} 798193655Ssam 799193655Ssam/* 800193655Ssam * Synchronize flags_ext bit state in the com structure 801193655Ssam * according to the state of all vap's. This is used, 802193655Ssam * for example, to handle state changes via ioctls. 803193655Ssam */ 804193655Ssamstatic void 805178354Ssamieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 806178354Ssam{ 807178354Ssam struct ieee80211vap *vap; 808178354Ssam int bit; 809178354Ssam 810178354Ssam IEEE80211_LOCK_ASSERT(ic); 811178354Ssam 812178354Ssam bit = 0; 813178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 814178354Ssam if (vap->iv_flags_ext & flag) { 815178354Ssam bit = 1; 816178354Ssam break; 817178354Ssam } 818178354Ssam if (bit) 819178354Ssam ic->ic_flags_ext |= flag; 820178354Ssam else 821178354Ssam ic->ic_flags_ext &= ~flag; 822178354Ssam} 823178354Ssam 824178354Ssamvoid 825178354Ssamieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 826178354Ssam{ 827178354Ssam struct ieee80211com *ic = vap->iv_ic; 828178354Ssam 829178354Ssam IEEE80211_LOCK(ic); 830178354Ssam if (flag < 0) { 831178354Ssam flag = -flag; 832178354Ssam vap->iv_flags_ext &= ~flag; 833178354Ssam } else 834178354Ssam vap->iv_flags_ext |= flag; 835178354Ssam ieee80211_syncflag_ext_locked(ic, flag); 836178354Ssam IEEE80211_UNLOCK(ic); 837178354Ssam} 838178354Ssam 839166012Ssamstatic __inline int 840166012Ssammapgsm(u_int freq, u_int flags) 841166012Ssam{ 842166012Ssam freq *= 10; 843166012Ssam if (flags & IEEE80211_CHAN_QUARTER) 844166012Ssam freq += 5; 845166012Ssam else if (flags & IEEE80211_CHAN_HALF) 846166012Ssam freq += 10; 847166012Ssam else 848166012Ssam freq += 20; 849166012Ssam /* NB: there is no 907/20 wide but leave room */ 850166012Ssam return (freq - 906*10) / 5; 851166012Ssam} 852166012Ssam 853166012Ssamstatic __inline int 854166012Ssammappsb(u_int freq, u_int flags) 855166012Ssam{ 856166012Ssam return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 857166012Ssam} 858166012Ssam 859116742Ssam/* 860116742Ssam * Convert MHz frequency to IEEE channel number. 861116742Ssam */ 862152450Ssamint 863116742Ssamieee80211_mhz2ieee(u_int freq, u_int flags) 864116742Ssam{ 865167430Ssam#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 866166012Ssam if (flags & IEEE80211_CHAN_GSM) 867166012Ssam return mapgsm(freq, flags); 868116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 869116742Ssam if (freq == 2484) 870116742Ssam return 14; 871116742Ssam if (freq < 2484) 872152450Ssam return ((int) freq - 2407) / 5; 873116742Ssam else 874116742Ssam return 15 + ((freq - 2512) / 20); 875116899Ssam } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 876165569Ssam if (freq <= 5000) { 877170530Ssam /* XXX check regdomain? */ 878167430Ssam if (IS_FREQ_IN_PSB(freq)) 879166012Ssam return mappsb(freq, flags); 880152450Ssam return (freq - 4000) / 5; 881165569Ssam } else 882152450Ssam return (freq - 5000) / 5; 883116742Ssam } else { /* either, guess */ 884116742Ssam if (freq == 2484) 885116742Ssam return 14; 886166012Ssam if (freq < 2484) { 887166012Ssam if (907 <= freq && freq <= 922) 888166012Ssam return mapgsm(freq, flags); 889152450Ssam return ((int) freq - 2407) / 5; 890166012Ssam } 891152450Ssam if (freq < 5000) { 892167430Ssam if (IS_FREQ_IN_PSB(freq)) 893166012Ssam return mappsb(freq, flags); 894165569Ssam else if (freq > 4900) 895152450Ssam return (freq - 4000) / 5; 896152450Ssam else 897152450Ssam return 15 + ((freq - 2512) / 20); 898152450Ssam } 899116742Ssam return (freq - 5000) / 5; 900116742Ssam } 901167430Ssam#undef IS_FREQ_IN_PSB 902116742Ssam} 903116742Ssam 904116742Ssam/* 905116742Ssam * Convert channel to IEEE channel number. 906116742Ssam */ 907152450Ssamint 908165825Smjacobieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 909116742Ssam{ 910170530Ssam if (c == NULL) { 911138568Ssam if_printf(ic->ic_ifp, "invalid channel (NULL)\n"); 912117039Ssam return 0; /* XXX */ 913116742Ssam } 914170530Ssam return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 915116742Ssam} 916116742Ssam 917116742Ssam/* 918116742Ssam * Convert IEEE channel number to MHz frequency. 919116742Ssam */ 920116742Ssamu_int 921116742Ssamieee80211_ieee2mhz(u_int chan, u_int flags) 922116742Ssam{ 923166012Ssam if (flags & IEEE80211_CHAN_GSM) 924166012Ssam return 907 + 5 * (chan / 10); 925116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 926116742Ssam if (chan == 14) 927116742Ssam return 2484; 928116742Ssam if (chan < 14) 929116742Ssam return 2407 + chan*5; 930116742Ssam else 931116742Ssam return 2512 + ((chan-15)*20); 932116742Ssam } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 933165569Ssam if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 934165569Ssam chan -= 37; 935165569Ssam return 4940 + chan*5 + (chan % 5 ? 2 : 0); 936165569Ssam } 937116742Ssam return 5000 + (chan*5); 938116742Ssam } else { /* either, guess */ 939166012Ssam /* XXX can't distinguish PSB+GSM channels */ 940116742Ssam if (chan == 14) 941116742Ssam return 2484; 942116742Ssam if (chan < 14) /* 0-13 */ 943116742Ssam return 2407 + chan*5; 944116742Ssam if (chan < 27) /* 15-26 */ 945116742Ssam return 2512 + ((chan-15)*20); 946116742Ssam return 5000 + (chan*5); 947116742Ssam } 948116742Ssam} 949116742Ssam 950116742Ssam/* 951170530Ssam * Locate a channel given a frequency+flags. We cache 952178354Ssam * the previous lookup to optimize switching between two 953170530Ssam * channels--as happens with dynamic turbo. 954170530Ssam */ 955170530Ssamstruct ieee80211_channel * 956170530Ssamieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 957170530Ssam{ 958170530Ssam struct ieee80211_channel *c; 959170530Ssam int i; 960170530Ssam 961170530Ssam flags &= IEEE80211_CHAN_ALLTURBO; 962170530Ssam c = ic->ic_prevchan; 963170530Ssam if (c != NULL && c->ic_freq == freq && 964170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 965170530Ssam return c; 966170530Ssam /* brute force search */ 967170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 968170530Ssam c = &ic->ic_channels[i]; 969170530Ssam if (c->ic_freq == freq && 970170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 971170530Ssam return c; 972170530Ssam } 973170530Ssam return NULL; 974170530Ssam} 975170530Ssam 976173861Ssam/* 977173861Ssam * Locate a channel given a channel number+flags. We cache 978173861Ssam * the previous lookup to optimize switching between two 979173861Ssam * channels--as happens with dynamic turbo. 980173861Ssam */ 981173861Ssamstruct ieee80211_channel * 982173861Ssamieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 983173861Ssam{ 984173861Ssam struct ieee80211_channel *c; 985173861Ssam int i; 986173861Ssam 987173861Ssam flags &= IEEE80211_CHAN_ALLTURBO; 988173861Ssam c = ic->ic_prevchan; 989173861Ssam if (c != NULL && c->ic_ieee == ieee && 990173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 991173861Ssam return c; 992173861Ssam /* brute force search */ 993173861Ssam for (i = 0; i < ic->ic_nchans; i++) { 994173861Ssam c = &ic->ic_channels[i]; 995173861Ssam if (c->ic_ieee == ieee && 996173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 997173861Ssam return c; 998173861Ssam } 999173861Ssam return NULL; 1000173861Ssam} 1001173861Ssam 1002170530Ssamstatic void 1003178354Ssamaddmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 1004170530Ssam{ 1005170530Ssam#define ADD(_ic, _s, _o) \ 1006178354Ssam ifmedia_add(media, \ 1007170530Ssam IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 1008170530Ssam static const u_int mopts[IEEE80211_MODE_MAX] = { 1009188106Ssam [IEEE80211_MODE_AUTO] = IFM_AUTO, 1010188106Ssam [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 1011188106Ssam [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 1012188106Ssam [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 1013188106Ssam [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 1014188106Ssam [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1015188106Ssam [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 1016188106Ssam [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1017188782Ssam [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 1018188782Ssam [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 1019188106Ssam [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 1020188106Ssam [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 1021170530Ssam }; 1022170530Ssam u_int mopt; 1023170530Ssam 1024170530Ssam mopt = mopts[mode]; 1025178354Ssam if (addsta) 1026178354Ssam ADD(ic, mword, mopt); /* STA mode has no cap */ 1027178354Ssam if (caps & IEEE80211_C_IBSS) 1028178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 1029178354Ssam if (caps & IEEE80211_C_HOSTAP) 1030178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 1031178354Ssam if (caps & IEEE80211_C_AHDEMO) 1032178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 1033178354Ssam if (caps & IEEE80211_C_MONITOR) 1034178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 1035178354Ssam if (caps & IEEE80211_C_WDS) 1036178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_WDS); 1037195618Srpaulo if (caps & IEEE80211_C_MBSS) 1038195618Srpaulo ADD(media, mword, mopt | IFM_IEEE80211_MBSS); 1039170530Ssam#undef ADD 1040170530Ssam} 1041170530Ssam 1042170530Ssam/* 1043116742Ssam * Setup the media data structures according to the channel and 1044178354Ssam * rate tables. 1045116742Ssam */ 1046178354Ssamstatic int 1047178354Ssamieee80211_media_setup(struct ieee80211com *ic, 1048178354Ssam struct ifmedia *media, int caps, int addsta, 1049116742Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 1050116742Ssam{ 1051228621Sbschmidt int i, j, rate, maxrate, mword, r; 1052228621Sbschmidt enum ieee80211_phymode mode; 1053170530Ssam const struct ieee80211_rateset *rs; 1054116742Ssam struct ieee80211_rateset allrates; 1055116742Ssam 1056118887Ssam /* 1057116742Ssam * Fill in media characteristics. 1058116742Ssam */ 1059178354Ssam ifmedia_init(media, 0, media_change, media_stat); 1060116742Ssam maxrate = 0; 1061170530Ssam /* 1062170530Ssam * Add media for legacy operating modes. 1063170530Ssam */ 1064116742Ssam memset(&allrates, 0, sizeof(allrates)); 1065170530Ssam for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 1066167468Ssam if (isclr(ic->ic_modecaps, mode)) 1067116742Ssam continue; 1068178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1069116742Ssam if (mode == IEEE80211_MODE_AUTO) 1070116742Ssam continue; 1071116742Ssam rs = &ic->ic_sup_rates[mode]; 1072116742Ssam for (i = 0; i < rs->rs_nrates; i++) { 1073116742Ssam rate = rs->rs_rates[i]; 1074116742Ssam mword = ieee80211_rate2media(ic, rate, mode); 1075116742Ssam if (mword == 0) 1076116742Ssam continue; 1077178354Ssam addmedia(media, caps, addsta, mode, mword); 1078116742Ssam /* 1079170530Ssam * Add legacy rate to the collection of all rates. 1080116742Ssam */ 1081116742Ssam r = rate & IEEE80211_RATE_VAL; 1082116742Ssam for (j = 0; j < allrates.rs_nrates; j++) 1083116742Ssam if (allrates.rs_rates[j] == r) 1084116742Ssam break; 1085116742Ssam if (j == allrates.rs_nrates) { 1086116742Ssam /* unique, add to the set */ 1087116742Ssam allrates.rs_rates[j] = r; 1088116742Ssam allrates.rs_nrates++; 1089116742Ssam } 1090116742Ssam rate = (rate & IEEE80211_RATE_VAL) / 2; 1091116742Ssam if (rate > maxrate) 1092116742Ssam maxrate = rate; 1093116742Ssam } 1094116742Ssam } 1095116742Ssam for (i = 0; i < allrates.rs_nrates; i++) { 1096116742Ssam mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1097116742Ssam IEEE80211_MODE_AUTO); 1098116742Ssam if (mword == 0) 1099116742Ssam continue; 1100170530Ssam /* NB: remove media options from mword */ 1101178354Ssam addmedia(media, caps, addsta, 1102178354Ssam IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1103116742Ssam } 1104170530Ssam /* 1105170530Ssam * Add HT/11n media. Note that we do not have enough 1106170530Ssam * bits in the media subtype to express the MCS so we 1107170530Ssam * use a "placeholder" media subtype and any fixed MCS 1108170530Ssam * must be specified with a different mechanism. 1109170530Ssam */ 1110188782Ssam for (; mode <= IEEE80211_MODE_11NG; mode++) { 1111170530Ssam if (isclr(ic->ic_modecaps, mode)) 1112170530Ssam continue; 1113178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1114178354Ssam addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1115170530Ssam } 1116170530Ssam if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1117170530Ssam isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1118178354Ssam addmedia(media, caps, addsta, 1119178354Ssam IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1120219599Sbschmidt i = ic->ic_txstream * 8 - 1; 1121219599Sbschmidt if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) && 1122219599Sbschmidt (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) 1123219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_400ns; 1124219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40)) 1125219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_800ns; 1126219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20)) 1127219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_400ns; 1128219599Sbschmidt else 1129219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_800ns; 1130219599Sbschmidt if (rate > maxrate) 1131219599Sbschmidt maxrate = rate; 1132170530Ssam } 1133178354Ssam return maxrate; 1134178354Ssam} 1135116742Ssam 1136178354Ssamvoid 1137178354Ssamieee80211_media_init(struct ieee80211com *ic) 1138178354Ssam{ 1139178354Ssam struct ifnet *ifp = ic->ic_ifp; 1140178354Ssam int maxrate; 1141178354Ssam 1142178354Ssam /* NB: this works because the structure is initialized to zero */ 1143178354Ssam if (!LIST_EMPTY(&ic->ic_media.ifm_list)) { 1144178354Ssam /* 1145178354Ssam * We are re-initializing the channel list; clear 1146178354Ssam * the existing media state as the media routines 1147178354Ssam * don't suppress duplicates. 1148178354Ssam */ 1149178354Ssam ifmedia_removeall(&ic->ic_media); 1150178354Ssam } 1151178354Ssam ieee80211_chan_init(ic); 1152178354Ssam 1153178354Ssam /* 1154178354Ssam * Recalculate media settings in case new channel list changes 1155178354Ssam * the set of available modes. 1156178354Ssam */ 1157178354Ssam maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1, 1158178354Ssam ieee80211com_media_change, ieee80211com_media_status); 1159170530Ssam /* NB: strip explicit mode; we're actually in autoselect */ 1160170530Ssam ifmedia_set(&ic->ic_media, 1161188106Ssam media_status(ic->ic_opmode, ic->ic_curchan) &~ 1162188106Ssam (IFM_MMASK | IFM_IEEE80211_TURBO)); 1163116742Ssam if (maxrate) 1164116742Ssam ifp->if_baudrate = IF_Mbps(maxrate); 1165178354Ssam 1166178354Ssam /* XXX need to propagate new media settings to vap's */ 1167116742Ssam} 1168116742Ssam 1169188782Ssam/* XXX inline or eliminate? */ 1170165569Ssamconst struct ieee80211_rateset * 1171165569Ssamieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1172165569Ssam{ 1173188774Ssam /* XXX does this work for 11ng basic rates? */ 1174170530Ssam return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1175165569Ssam} 1176165569Ssam 1177138568Ssamvoid 1178138568Ssamieee80211_announce(struct ieee80211com *ic) 1179138568Ssam{ 1180138568Ssam struct ifnet *ifp = ic->ic_ifp; 1181228621Sbschmidt int i, rate, mword; 1182228621Sbschmidt enum ieee80211_phymode mode; 1183170530Ssam const struct ieee80211_rateset *rs; 1184138568Ssam 1185172227Ssam /* NB: skip AUTO since it has no rates */ 1186172227Ssam for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1187167468Ssam if (isclr(ic->ic_modecaps, mode)) 1188138568Ssam continue; 1189138568Ssam if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 1190138568Ssam rs = &ic->ic_sup_rates[mode]; 1191138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 1192170530Ssam mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1193138568Ssam if (mword == 0) 1194138568Ssam continue; 1195170530Ssam rate = ieee80211_media2rate(mword); 1196138568Ssam printf("%s%d%sMbps", (i != 0 ? " " : ""), 1197170530Ssam rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1198138568Ssam } 1199138568Ssam printf("\n"); 1200138568Ssam } 1201170530Ssam ieee80211_ht_announce(ic); 1202138568Ssam} 1203138568Ssam 1204170530Ssamvoid 1205170530Ssamieee80211_announce_channels(struct ieee80211com *ic) 1206116742Ssam{ 1207170530Ssam const struct ieee80211_channel *c; 1208170530Ssam char type; 1209170530Ssam int i, cw; 1210170530Ssam 1211170530Ssam printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1212170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 1213170530Ssam c = &ic->ic_channels[i]; 1214170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 1215170530Ssam type = 'S'; 1216170530Ssam else if (IEEE80211_IS_CHAN_108A(c)) 1217170530Ssam type = 'T'; 1218170530Ssam else if (IEEE80211_IS_CHAN_108G(c)) 1219170530Ssam type = 'G'; 1220170530Ssam else if (IEEE80211_IS_CHAN_HT(c)) 1221170530Ssam type = 'n'; 1222170530Ssam else if (IEEE80211_IS_CHAN_A(c)) 1223170530Ssam type = 'a'; 1224170530Ssam else if (IEEE80211_IS_CHAN_ANYG(c)) 1225170530Ssam type = 'g'; 1226170530Ssam else if (IEEE80211_IS_CHAN_B(c)) 1227170530Ssam type = 'b'; 1228170530Ssam else 1229170530Ssam type = 'f'; 1230170530Ssam if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1231170530Ssam cw = 40; 1232170530Ssam else if (IEEE80211_IS_CHAN_HALF(c)) 1233170530Ssam cw = 10; 1234170530Ssam else if (IEEE80211_IS_CHAN_QUARTER(c)) 1235170530Ssam cw = 5; 1236170530Ssam else 1237170530Ssam cw = 20; 1238170530Ssam printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 1239170530Ssam , c->ic_ieee, c->ic_freq, type 1240170530Ssam , cw 1241170530Ssam , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 1242170530Ssam IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 1243170530Ssam , c->ic_maxregpower 1244170530Ssam , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 1245170530Ssam , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 1246170530Ssam ); 1247170530Ssam } 1248116742Ssam} 1249116742Ssam 1250170530Ssamstatic int 1251184273Ssammedia2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 1252170530Ssam{ 1253116742Ssam switch (IFM_MODE(ime->ifm_media)) { 1254116742Ssam case IFM_IEEE80211_11A: 1255178354Ssam *mode = IEEE80211_MODE_11A; 1256116742Ssam break; 1257116742Ssam case IFM_IEEE80211_11B: 1258178354Ssam *mode = IEEE80211_MODE_11B; 1259116742Ssam break; 1260116742Ssam case IFM_IEEE80211_11G: 1261178354Ssam *mode = IEEE80211_MODE_11G; 1262116742Ssam break; 1263124543Sonoe case IFM_IEEE80211_FH: 1264178354Ssam *mode = IEEE80211_MODE_FH; 1265124543Sonoe break; 1266170530Ssam case IFM_IEEE80211_11NA: 1267178354Ssam *mode = IEEE80211_MODE_11NA; 1268170530Ssam break; 1269170530Ssam case IFM_IEEE80211_11NG: 1270178354Ssam *mode = IEEE80211_MODE_11NG; 1271170530Ssam break; 1272116742Ssam case IFM_AUTO: 1273178354Ssam *mode = IEEE80211_MODE_AUTO; 1274116742Ssam break; 1275116742Ssam default: 1276178354Ssam return 0; 1277116742Ssam } 1278116742Ssam /* 1279138568Ssam * Turbo mode is an ``option''. 1280138568Ssam * XXX does not apply to AUTO 1281116742Ssam */ 1282116742Ssam if (ime->ifm_media & IFM_IEEE80211_TURBO) { 1283178354Ssam if (*mode == IEEE80211_MODE_11A) { 1284184273Ssam if (flags & IEEE80211_F_TURBOP) 1285178354Ssam *mode = IEEE80211_MODE_TURBO_A; 1286170530Ssam else 1287178354Ssam *mode = IEEE80211_MODE_STURBO_A; 1288178354Ssam } else if (*mode == IEEE80211_MODE_11G) 1289178354Ssam *mode = IEEE80211_MODE_TURBO_G; 1290138568Ssam else 1291178354Ssam return 0; 1292116742Ssam } 1293170530Ssam /* XXX HT40 +/- */ 1294178354Ssam return 1; 1295178354Ssam} 1296116742Ssam 1297178354Ssam/* 1298184273Ssam * Handle a media change request on the underlying interface. 1299178354Ssam */ 1300178354Ssamint 1301178354Ssamieee80211com_media_change(struct ifnet *ifp) 1302178354Ssam{ 1303184273Ssam return EINVAL; 1304178354Ssam} 1305116742Ssam 1306178354Ssam/* 1307178354Ssam * Handle a media change request on the vap interface. 1308178354Ssam */ 1309178354Ssamint 1310178354Ssamieee80211_media_change(struct ifnet *ifp) 1311178354Ssam{ 1312178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1313178354Ssam struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 1314184273Ssam uint16_t newmode; 1315178354Ssam 1316184273Ssam if (!media2mode(ime, vap->iv_flags, &newmode)) 1317178354Ssam return EINVAL; 1318184273Ssam if (vap->iv_des_mode != newmode) { 1319184273Ssam vap->iv_des_mode = newmode; 1320193340Ssam /* XXX kick state machine if up+running */ 1321178354Ssam } 1322178354Ssam return 0; 1323116742Ssam} 1324116742Ssam 1325170530Ssam/* 1326170530Ssam * Common code to calculate the media status word 1327170530Ssam * from the operating mode and channel state. 1328170530Ssam */ 1329170530Ssamstatic int 1330170530Ssammedia_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 1331170530Ssam{ 1332170530Ssam int status; 1333170530Ssam 1334170530Ssam status = IFM_IEEE80211; 1335170530Ssam switch (opmode) { 1336170530Ssam case IEEE80211_M_STA: 1337170530Ssam break; 1338170530Ssam case IEEE80211_M_IBSS: 1339170530Ssam status |= IFM_IEEE80211_ADHOC; 1340170530Ssam break; 1341170530Ssam case IEEE80211_M_HOSTAP: 1342170530Ssam status |= IFM_IEEE80211_HOSTAP; 1343170530Ssam break; 1344170530Ssam case IEEE80211_M_MONITOR: 1345170530Ssam status |= IFM_IEEE80211_MONITOR; 1346170530Ssam break; 1347170530Ssam case IEEE80211_M_AHDEMO: 1348170530Ssam status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1349170530Ssam break; 1350170530Ssam case IEEE80211_M_WDS: 1351178354Ssam status |= IFM_IEEE80211_WDS; 1352170530Ssam break; 1353195618Srpaulo case IEEE80211_M_MBSS: 1354195618Srpaulo status |= IFM_IEEE80211_MBSS; 1355195618Srpaulo break; 1356170530Ssam } 1357170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) { 1358170530Ssam status |= IFM_IEEE80211_11NA; 1359170530Ssam } else if (IEEE80211_IS_CHAN_HTG(chan)) { 1360170530Ssam status |= IFM_IEEE80211_11NG; 1361170530Ssam } else if (IEEE80211_IS_CHAN_A(chan)) { 1362170530Ssam status |= IFM_IEEE80211_11A; 1363170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 1364170530Ssam status |= IFM_IEEE80211_11B; 1365170530Ssam } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 1366170530Ssam status |= IFM_IEEE80211_11G; 1367170530Ssam } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 1368170530Ssam status |= IFM_IEEE80211_FH; 1369170530Ssam } 1370170530Ssam /* XXX else complain? */ 1371170530Ssam 1372170530Ssam if (IEEE80211_IS_CHAN_TURBO(chan)) 1373170530Ssam status |= IFM_IEEE80211_TURBO; 1374178354Ssam#if 0 1375178354Ssam if (IEEE80211_IS_CHAN_HT20(chan)) 1376178354Ssam status |= IFM_IEEE80211_HT20; 1377178354Ssam if (IEEE80211_IS_CHAN_HT40(chan)) 1378178354Ssam status |= IFM_IEEE80211_HT40; 1379178354Ssam#endif 1380170530Ssam return status; 1381170530Ssam} 1382170530Ssam 1383178354Ssamstatic void 1384178354Ssamieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1385178354Ssam{ 1386178354Ssam struct ieee80211com *ic = ifp->if_l2com; 1387178354Ssam struct ieee80211vap *vap; 1388178354Ssam 1389178354Ssam imr->ifm_status = IFM_AVALID; 1390178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1391178354Ssam if (vap->iv_ifp->if_flags & IFF_UP) { 1392178354Ssam imr->ifm_status |= IFM_ACTIVE; 1393178354Ssam break; 1394178354Ssam } 1395178354Ssam imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan); 1396178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1397178354Ssam imr->ifm_current = imr->ifm_active; 1398178354Ssam} 1399178354Ssam 1400116742Ssamvoid 1401116742Ssamieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1402116742Ssam{ 1403178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1404178354Ssam struct ieee80211com *ic = vap->iv_ic; 1405170530Ssam enum ieee80211_phymode mode; 1406116742Ssam 1407116742Ssam imr->ifm_status = IFM_AVALID; 1408170530Ssam /* 1409170530Ssam * NB: use the current channel's mode to lock down a xmit 1410170530Ssam * rate only when running; otherwise we may have a mismatch 1411170530Ssam * in which case the rate will not be convertible. 1412170530Ssam */ 1413178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1414116742Ssam imr->ifm_status |= IFM_ACTIVE; 1415170530Ssam mode = ieee80211_chan2mode(ic->ic_curchan); 1416170530Ssam } else 1417170530Ssam mode = IEEE80211_MODE_AUTO; 1418178354Ssam imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 1419138568Ssam /* 1420138568Ssam * Calculate a current rate if possible. 1421138568Ssam */ 1422178354Ssam if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 1423138568Ssam /* 1424138568Ssam * A fixed rate is set, report that. 1425138568Ssam */ 1426138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1427178354Ssam vap->iv_txparms[mode].ucastrate, mode); 1428178354Ssam } else if (vap->iv_opmode == IEEE80211_M_STA) { 1429138568Ssam /* 1430138568Ssam * In station mode report the current transmit rate. 1431138568Ssam */ 1432138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1433178354Ssam vap->iv_bss->ni_txrate, mode); 1434128966Sandre } else 1435138568Ssam imr->ifm_active |= IFM_AUTO; 1436178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1437178354Ssam imr->ifm_current = imr->ifm_active; 1438116742Ssam} 1439116742Ssam 1440116742Ssam/* 1441116742Ssam * Set the current phy mode and recalculate the active channel 1442116742Ssam * set based on the available channels for this mode. Also 1443116742Ssam * select a new default/current channel if the current one is 1444116742Ssam * inappropriate for this mode. 1445116742Ssam */ 1446116742Ssamint 1447116742Ssamieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 1448116742Ssam{ 1449116742Ssam /* 1450166012Ssam * Adjust basic rates in 11b/11g supported rate set. 1451166012Ssam * Note that if operating on a hal/quarter rate channel 1452166012Ssam * this is a noop as those rates sets are different 1453166012Ssam * and used instead. 1454116742Ssam */ 1455166012Ssam if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 1456178354Ssam ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 1457166012Ssam 1458116742Ssam ic->ic_curmode = mode; 1459138568Ssam ieee80211_reset_erp(ic); /* reset ERP state */ 1460138568Ssam 1461116742Ssam return 0; 1462116742Ssam} 1463116742Ssam 1464116742Ssam/* 1465170530Ssam * Return the phy mode for with the specified channel. 1466116742Ssam */ 1467116742Ssamenum ieee80211_phymode 1468170530Ssamieee80211_chan2mode(const struct ieee80211_channel *chan) 1469116742Ssam{ 1470170530Ssam 1471170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) 1472170530Ssam return IEEE80211_MODE_11NA; 1473170530Ssam else if (IEEE80211_IS_CHAN_HTG(chan)) 1474170530Ssam return IEEE80211_MODE_11NG; 1475170530Ssam else if (IEEE80211_IS_CHAN_108G(chan)) 1476170530Ssam return IEEE80211_MODE_TURBO_G; 1477170530Ssam else if (IEEE80211_IS_CHAN_ST(chan)) 1478170530Ssam return IEEE80211_MODE_STURBO_A; 1479170530Ssam else if (IEEE80211_IS_CHAN_TURBO(chan)) 1480153350Ssam return IEEE80211_MODE_TURBO_A; 1481188782Ssam else if (IEEE80211_IS_CHAN_HALF(chan)) 1482188782Ssam return IEEE80211_MODE_HALF; 1483188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(chan)) 1484188782Ssam return IEEE80211_MODE_QUARTER; 1485170530Ssam else if (IEEE80211_IS_CHAN_A(chan)) 1486116742Ssam return IEEE80211_MODE_11A; 1487170530Ssam else if (IEEE80211_IS_CHAN_ANYG(chan)) 1488116742Ssam return IEEE80211_MODE_11G; 1489170530Ssam else if (IEEE80211_IS_CHAN_B(chan)) 1490116742Ssam return IEEE80211_MODE_11B; 1491170530Ssam else if (IEEE80211_IS_CHAN_FHSS(chan)) 1492170530Ssam return IEEE80211_MODE_FH; 1493170530Ssam 1494170530Ssam /* NB: should not get here */ 1495170530Ssam printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 1496170530Ssam __func__, chan->ic_freq, chan->ic_flags); 1497170530Ssam return IEEE80211_MODE_11B; 1498116742Ssam} 1499116742Ssam 1500170530Ssamstruct ratemedia { 1501170530Ssam u_int match; /* rate + mode */ 1502170530Ssam u_int media; /* if_media rate */ 1503170530Ssam}; 1504170530Ssam 1505170530Ssamstatic int 1506170530Ssamfindmedia(const struct ratemedia rates[], int n, u_int match) 1507170530Ssam{ 1508170530Ssam int i; 1509170530Ssam 1510170530Ssam for (i = 0; i < n; i++) 1511170530Ssam if (rates[i].match == match) 1512170530Ssam return rates[i].media; 1513170530Ssam return IFM_AUTO; 1514170530Ssam} 1515170530Ssam 1516116742Ssam/* 1517170530Ssam * Convert IEEE80211 rate value to ifmedia subtype. 1518170530Ssam * Rate is either a legacy rate in units of 0.5Mbps 1519170530Ssam * or an MCS index. 1520116742Ssam */ 1521116742Ssamint 1522116742Ssamieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 1523116742Ssam{ 1524116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1525170530Ssam static const struct ratemedia rates[] = { 1526124543Sonoe { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 1527124543Sonoe { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 1528124543Sonoe { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 1529124543Sonoe { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 1530124543Sonoe { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 1531124543Sonoe { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 1532124543Sonoe { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 1533124543Sonoe { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 1534124543Sonoe { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 1535124543Sonoe { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 1536124543Sonoe { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 1537124543Sonoe { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 1538124543Sonoe { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 1539124543Sonoe { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 1540124543Sonoe { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 1541124543Sonoe { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 1542124543Sonoe { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 1543124543Sonoe { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 1544124543Sonoe { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 1545124543Sonoe { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 1546124543Sonoe { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 1547124543Sonoe { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 1548124543Sonoe { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 1549124543Sonoe { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1550124543Sonoe { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1551124543Sonoe { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1552124543Sonoe { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1553165569Ssam { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 1554165569Ssam { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 1555165569Ssam { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 1556116742Ssam /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1557116742Ssam }; 1558170530Ssam static const struct ratemedia htrates[] = { 1559170530Ssam { 0, IFM_IEEE80211_MCS }, 1560170530Ssam { 1, IFM_IEEE80211_MCS }, 1561170530Ssam { 2, IFM_IEEE80211_MCS }, 1562170530Ssam { 3, IFM_IEEE80211_MCS }, 1563170530Ssam { 4, IFM_IEEE80211_MCS }, 1564170530Ssam { 5, IFM_IEEE80211_MCS }, 1565170530Ssam { 6, IFM_IEEE80211_MCS }, 1566170530Ssam { 7, IFM_IEEE80211_MCS }, 1567170530Ssam { 8, IFM_IEEE80211_MCS }, 1568170530Ssam { 9, IFM_IEEE80211_MCS }, 1569170530Ssam { 10, IFM_IEEE80211_MCS }, 1570170530Ssam { 11, IFM_IEEE80211_MCS }, 1571170530Ssam { 12, IFM_IEEE80211_MCS }, 1572170530Ssam { 13, IFM_IEEE80211_MCS }, 1573170530Ssam { 14, IFM_IEEE80211_MCS }, 1574170530Ssam { 15, IFM_IEEE80211_MCS }, 1575219456Sbschmidt { 16, IFM_IEEE80211_MCS }, 1576219456Sbschmidt { 17, IFM_IEEE80211_MCS }, 1577219456Sbschmidt { 18, IFM_IEEE80211_MCS }, 1578219456Sbschmidt { 19, IFM_IEEE80211_MCS }, 1579219456Sbschmidt { 20, IFM_IEEE80211_MCS }, 1580219456Sbschmidt { 21, IFM_IEEE80211_MCS }, 1581219456Sbschmidt { 22, IFM_IEEE80211_MCS }, 1582219456Sbschmidt { 23, IFM_IEEE80211_MCS }, 1583219456Sbschmidt { 24, IFM_IEEE80211_MCS }, 1584219456Sbschmidt { 25, IFM_IEEE80211_MCS }, 1585219456Sbschmidt { 26, IFM_IEEE80211_MCS }, 1586219456Sbschmidt { 27, IFM_IEEE80211_MCS }, 1587219456Sbschmidt { 28, IFM_IEEE80211_MCS }, 1588219456Sbschmidt { 29, IFM_IEEE80211_MCS }, 1589219456Sbschmidt { 30, IFM_IEEE80211_MCS }, 1590219456Sbschmidt { 31, IFM_IEEE80211_MCS }, 1591219456Sbschmidt { 32, IFM_IEEE80211_MCS }, 1592219456Sbschmidt { 33, IFM_IEEE80211_MCS }, 1593219456Sbschmidt { 34, IFM_IEEE80211_MCS }, 1594219456Sbschmidt { 35, IFM_IEEE80211_MCS }, 1595219456Sbschmidt { 36, IFM_IEEE80211_MCS }, 1596219456Sbschmidt { 37, IFM_IEEE80211_MCS }, 1597219456Sbschmidt { 38, IFM_IEEE80211_MCS }, 1598219456Sbschmidt { 39, IFM_IEEE80211_MCS }, 1599219456Sbschmidt { 40, IFM_IEEE80211_MCS }, 1600219456Sbschmidt { 41, IFM_IEEE80211_MCS }, 1601219456Sbschmidt { 42, IFM_IEEE80211_MCS }, 1602219456Sbschmidt { 43, IFM_IEEE80211_MCS }, 1603219456Sbschmidt { 44, IFM_IEEE80211_MCS }, 1604219456Sbschmidt { 45, IFM_IEEE80211_MCS }, 1605219456Sbschmidt { 46, IFM_IEEE80211_MCS }, 1606219456Sbschmidt { 47, IFM_IEEE80211_MCS }, 1607219456Sbschmidt { 48, IFM_IEEE80211_MCS }, 1608219456Sbschmidt { 49, IFM_IEEE80211_MCS }, 1609219456Sbschmidt { 50, IFM_IEEE80211_MCS }, 1610219456Sbschmidt { 51, IFM_IEEE80211_MCS }, 1611219456Sbschmidt { 52, IFM_IEEE80211_MCS }, 1612219456Sbschmidt { 53, IFM_IEEE80211_MCS }, 1613219456Sbschmidt { 54, IFM_IEEE80211_MCS }, 1614219456Sbschmidt { 55, IFM_IEEE80211_MCS }, 1615219456Sbschmidt { 56, IFM_IEEE80211_MCS }, 1616219456Sbschmidt { 57, IFM_IEEE80211_MCS }, 1617219456Sbschmidt { 58, IFM_IEEE80211_MCS }, 1618219456Sbschmidt { 59, IFM_IEEE80211_MCS }, 1619219456Sbschmidt { 60, IFM_IEEE80211_MCS }, 1620219456Sbschmidt { 61, IFM_IEEE80211_MCS }, 1621219456Sbschmidt { 62, IFM_IEEE80211_MCS }, 1622219456Sbschmidt { 63, IFM_IEEE80211_MCS }, 1623219456Sbschmidt { 64, IFM_IEEE80211_MCS }, 1624219456Sbschmidt { 65, IFM_IEEE80211_MCS }, 1625219456Sbschmidt { 66, IFM_IEEE80211_MCS }, 1626219456Sbschmidt { 67, IFM_IEEE80211_MCS }, 1627219456Sbschmidt { 68, IFM_IEEE80211_MCS }, 1628219456Sbschmidt { 69, IFM_IEEE80211_MCS }, 1629219456Sbschmidt { 70, IFM_IEEE80211_MCS }, 1630219456Sbschmidt { 71, IFM_IEEE80211_MCS }, 1631219456Sbschmidt { 72, IFM_IEEE80211_MCS }, 1632219456Sbschmidt { 73, IFM_IEEE80211_MCS }, 1633219456Sbschmidt { 74, IFM_IEEE80211_MCS }, 1634219456Sbschmidt { 75, IFM_IEEE80211_MCS }, 1635219456Sbschmidt { 76, IFM_IEEE80211_MCS }, 1636170530Ssam }; 1637170530Ssam int m; 1638116742Ssam 1639170530Ssam /* 1640170530Ssam * Check 11n rates first for match as an MCS. 1641170530Ssam */ 1642170530Ssam if (mode == IEEE80211_MODE_11NA) { 1643172226Ssam if (rate & IEEE80211_RATE_MCS) { 1644172226Ssam rate &= ~IEEE80211_RATE_MCS; 1645170530Ssam m = findmedia(htrates, N(htrates), rate); 1646170530Ssam if (m != IFM_AUTO) 1647170530Ssam return m | IFM_IEEE80211_11NA; 1648170530Ssam } 1649170530Ssam } else if (mode == IEEE80211_MODE_11NG) { 1650170530Ssam /* NB: 12 is ambiguous, it will be treated as an MCS */ 1651172226Ssam if (rate & IEEE80211_RATE_MCS) { 1652172226Ssam rate &= ~IEEE80211_RATE_MCS; 1653170530Ssam m = findmedia(htrates, N(htrates), rate); 1654170530Ssam if (m != IFM_AUTO) 1655170530Ssam return m | IFM_IEEE80211_11NG; 1656170530Ssam } 1657170530Ssam } 1658170530Ssam rate &= IEEE80211_RATE_VAL; 1659116742Ssam switch (mode) { 1660116742Ssam case IEEE80211_MODE_11A: 1661188782Ssam case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 1662188782Ssam case IEEE80211_MODE_QUARTER: 1663170530Ssam case IEEE80211_MODE_11NA: 1664138568Ssam case IEEE80211_MODE_TURBO_A: 1665170530Ssam case IEEE80211_MODE_STURBO_A: 1666170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A); 1667116742Ssam case IEEE80211_MODE_11B: 1668170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B); 1669124543Sonoe case IEEE80211_MODE_FH: 1670170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH); 1671116742Ssam case IEEE80211_MODE_AUTO: 1672116742Ssam /* NB: ic may be NULL for some drivers */ 1673188775Ssam if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 1674170530Ssam return findmedia(rates, N(rates), 1675170530Ssam rate | IFM_IEEE80211_FH); 1676116742Ssam /* NB: hack, 11g matches both 11b+11a rates */ 1677116742Ssam /* fall thru... */ 1678116742Ssam case IEEE80211_MODE_11G: 1679170530Ssam case IEEE80211_MODE_11NG: 1680138568Ssam case IEEE80211_MODE_TURBO_G: 1681170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G); 1682116742Ssam } 1683116742Ssam return IFM_AUTO; 1684116742Ssam#undef N 1685116742Ssam} 1686116742Ssam 1687116742Ssamint 1688116742Ssamieee80211_media2rate(int mword) 1689116742Ssam{ 1690116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1691116742Ssam static const int ieeerates[] = { 1692116742Ssam -1, /* IFM_AUTO */ 1693116742Ssam 0, /* IFM_MANUAL */ 1694116742Ssam 0, /* IFM_NONE */ 1695116742Ssam 2, /* IFM_IEEE80211_FH1 */ 1696116742Ssam 4, /* IFM_IEEE80211_FH2 */ 1697116742Ssam 2, /* IFM_IEEE80211_DS1 */ 1698116742Ssam 4, /* IFM_IEEE80211_DS2 */ 1699116742Ssam 11, /* IFM_IEEE80211_DS5 */ 1700116742Ssam 22, /* IFM_IEEE80211_DS11 */ 1701116742Ssam 44, /* IFM_IEEE80211_DS22 */ 1702116742Ssam 12, /* IFM_IEEE80211_OFDM6 */ 1703116742Ssam 18, /* IFM_IEEE80211_OFDM9 */ 1704116742Ssam 24, /* IFM_IEEE80211_OFDM12 */ 1705116742Ssam 36, /* IFM_IEEE80211_OFDM18 */ 1706116742Ssam 48, /* IFM_IEEE80211_OFDM24 */ 1707116742Ssam 72, /* IFM_IEEE80211_OFDM36 */ 1708116742Ssam 96, /* IFM_IEEE80211_OFDM48 */ 1709116742Ssam 108, /* IFM_IEEE80211_OFDM54 */ 1710116742Ssam 144, /* IFM_IEEE80211_OFDM72 */ 1711165569Ssam 0, /* IFM_IEEE80211_DS354k */ 1712165569Ssam 0, /* IFM_IEEE80211_DS512k */ 1713165569Ssam 6, /* IFM_IEEE80211_OFDM3 */ 1714165569Ssam 9, /* IFM_IEEE80211_OFDM4 */ 1715165569Ssam 54, /* IFM_IEEE80211_OFDM27 */ 1716170530Ssam -1, /* IFM_IEEE80211_MCS */ 1717116742Ssam }; 1718116742Ssam return IFM_SUBTYPE(mword) < N(ieeerates) ? 1719116742Ssam ieeerates[IFM_SUBTYPE(mword)] : 0; 1720116742Ssam#undef N 1721116742Ssam} 1722195379Ssam 1723195379Ssam/* 1724195379Ssam * The following hash function is adapted from "Hash Functions" by Bob Jenkins 1725195379Ssam * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). 1726195379Ssam */ 1727195379Ssam#define mix(a, b, c) \ 1728195379Ssamdo { \ 1729195379Ssam a -= b; a -= c; a ^= (c >> 13); \ 1730195379Ssam b -= c; b -= a; b ^= (a << 8); \ 1731195379Ssam c -= a; c -= b; c ^= (b >> 13); \ 1732195379Ssam a -= b; a -= c; a ^= (c >> 12); \ 1733195379Ssam b -= c; b -= a; b ^= (a << 16); \ 1734195379Ssam c -= a; c -= b; c ^= (b >> 5); \ 1735195379Ssam a -= b; a -= c; a ^= (c >> 3); \ 1736195379Ssam b -= c; b -= a; b ^= (a << 10); \ 1737195379Ssam c -= a; c -= b; c ^= (b >> 15); \ 1738195379Ssam} while (/*CONSTCOND*/0) 1739195379Ssam 1740195379Ssamuint32_t 1741195379Ssamieee80211_mac_hash(const struct ieee80211com *ic, 1742195379Ssam const uint8_t addr[IEEE80211_ADDR_LEN]) 1743195379Ssam{ 1744195379Ssam uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; 1745195379Ssam 1746195379Ssam b += addr[5] << 8; 1747195379Ssam b += addr[4]; 1748195379Ssam a += addr[3] << 24; 1749195379Ssam a += addr[2] << 16; 1750195379Ssam a += addr[1] << 8; 1751195379Ssam a += addr[0]; 1752195379Ssam 1753195379Ssam mix(a, b, c); 1754195379Ssam 1755195379Ssam return c; 1756195379Ssam} 1757195379Ssam#undef mix 1758