ieee80211.c revision 254082
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 254082 2013-08-08 05:09:35Z 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; 436254082Sadrian ifp->if_transmit = ieee80211_vap_transmit; 437254082Sadrian ifp->if_qflush = ieee80211_vap_qflush; 438178354Ssam ifp->if_ioctl = ieee80211_ioctl; 439178354Ssam ifp->if_init = ieee80211_init; 440178354Ssam 441178354Ssam vap->iv_ifp = ifp; 442178354Ssam vap->iv_ic = ic; 443178354Ssam vap->iv_flags = ic->ic_flags; /* propagate common flags */ 444178354Ssam vap->iv_flags_ext = ic->ic_flags_ext; 445178354Ssam vap->iv_flags_ven = ic->ic_flags_ven; 446178354Ssam vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; 447178354Ssam vap->iv_htcaps = ic->ic_htcaps; 448205513Srpaulo vap->iv_htextcaps = ic->ic_htextcaps; 449178354Ssam vap->iv_opmode = opmode; 450178957Ssam vap->iv_caps |= ieee80211_opcap[opmode]; 451178354Ssam switch (opmode) { 452178354Ssam case IEEE80211_M_WDS: 453178354Ssam /* 454178354Ssam * WDS links must specify the bssid of the far end. 455178354Ssam * For legacy operation this is a static relationship. 456178354Ssam * For non-legacy operation the station must associate 457178354Ssam * and be authorized to pass traffic. Plumbing the 458178354Ssam * vap to the proper node happens when the vap 459178354Ssam * transitions to RUN state. 460178354Ssam */ 461178354Ssam IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); 462178354Ssam vap->iv_flags |= IEEE80211_F_DESBSSID; 463178354Ssam if (flags & IEEE80211_CLONE_WDSLEGACY) 464178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; 465178354Ssam break; 466186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 467186904Ssam case IEEE80211_M_AHDEMO: 468186904Ssam if (flags & IEEE80211_CLONE_TDMA) { 469186904Ssam /* NB: checked before clone operation allowed */ 470186904Ssam KASSERT(ic->ic_caps & IEEE80211_C_TDMA, 471186904Ssam ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); 472186904Ssam /* 473186904Ssam * Propagate TDMA capability to mark vap; this 474186904Ssam * cannot be removed and is used to distinguish 475186904Ssam * regular ahdemo operation from ahdemo+tdma. 476186904Ssam */ 477186904Ssam vap->iv_caps |= IEEE80211_C_TDMA; 478186904Ssam } 479186904Ssam break; 480186904Ssam#endif 481228621Sbschmidt default: 482228621Sbschmidt break; 483178354Ssam } 484184278Ssam /* auto-enable s/w beacon miss support */ 485184278Ssam if (flags & IEEE80211_CLONE_NOBEACONS) 486184278Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; 487202612Sthompsa /* auto-generated or user supplied MAC address */ 488202612Sthompsa if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR)) 489202612Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC; 490178354Ssam /* 491178354Ssam * Enable various functionality by default if we're 492178354Ssam * capable; the driver can override us if it knows better. 493178354Ssam */ 494178354Ssam if (vap->iv_caps & IEEE80211_C_WME) 495178354Ssam vap->iv_flags |= IEEE80211_F_WME; 496178354Ssam if (vap->iv_caps & IEEE80211_C_BURST) 497178354Ssam vap->iv_flags |= IEEE80211_F_BURST; 498178354Ssam /* NB: bg scanning only makes sense for station mode right now */ 499178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 500178354Ssam (vap->iv_caps & IEEE80211_C_BGSCAN)) 501178354Ssam vap->iv_flags |= IEEE80211_F_BGSCAN; 502178957Ssam vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ 503178954Ssam /* NB: DFS support only makes sense for ap mode right now */ 504178954Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 505178954Ssam (vap->iv_caps & IEEE80211_C_DFS)) 506178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_DFS; 507178354Ssam 508178354Ssam vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 509178354Ssam vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; 510178354Ssam vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; 511178354Ssam /* 512178354Ssam * Install a default reset method for the ioctl support; 513178354Ssam * the driver can override this. 514178354Ssam */ 515178354Ssam vap->iv_reset = default_reset; 516178354Ssam 517178354Ssam IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr); 518178354Ssam 519178354Ssam ieee80211_sysctl_vattach(vap); 520178354Ssam ieee80211_crypto_vattach(vap); 521178354Ssam ieee80211_node_vattach(vap); 522178354Ssam ieee80211_power_vattach(vap); 523178354Ssam ieee80211_proto_vattach(vap); 524190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 525190391Ssam ieee80211_superg_vattach(vap); 526190391Ssam#endif 527178354Ssam ieee80211_ht_vattach(vap); 528178354Ssam ieee80211_scan_vattach(vap); 529178354Ssam ieee80211_regdomain_vattach(vap); 530192468Ssam ieee80211_radiotap_vattach(vap); 531214894Sbschmidt ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE); 532178354Ssam 533178354Ssam return 0; 534178354Ssam} 535178354Ssam 536178354Ssam/* 537178354Ssam * Activate a vap. State should have been prepared with a 538178354Ssam * call to ieee80211_vap_setup and by the driver. On return 539178354Ssam * from this call the vap is ready for use. 540178354Ssam */ 541178354Ssamint 542178354Ssamieee80211_vap_attach(struct ieee80211vap *vap, 543178354Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 544178354Ssam{ 545178354Ssam struct ifnet *ifp = vap->iv_ifp; 546178354Ssam struct ieee80211com *ic = vap->iv_ic; 547178354Ssam struct ifmediareq imr; 548178354Ssam int maxrate; 549178354Ssam 550178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 551178354Ssam "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", 552178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 553178354Ssam ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext); 554178354Ssam 555178354Ssam /* 556178354Ssam * Do late attach work that cannot happen until after 557178354Ssam * the driver has had a chance to override defaults. 558178354Ssam */ 559178354Ssam ieee80211_node_latevattach(vap); 560178354Ssam ieee80211_power_latevattach(vap); 561178354Ssam 562178354Ssam maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, 563178354Ssam vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); 564178354Ssam ieee80211_media_status(ifp, &imr); 565178354Ssam /* NB: strip explicit mode; we're actually in autoselect */ 566188106Ssam ifmedia_set(&vap->iv_media, 567188106Ssam imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); 568178354Ssam if (maxrate) 569178354Ssam ifp->if_baudrate = IF_Mbps(maxrate); 570178354Ssam 571178354Ssam ether_ifattach(ifp, vap->iv_myaddr); 572195846Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR) { 573195846Ssam /* NB: disallow transmit */ 574195846Ssam ifp->if_transmit = null_transmit; 575195846Ssam ifp->if_output = null_output; 576195846Ssam } else { 577195846Ssam /* hook output method setup by ether_ifattach */ 578195846Ssam vap->iv_output = ifp->if_output; 579195846Ssam ifp->if_output = ieee80211_output; 580195846Ssam } 581178354Ssam /* NB: if_mtu set by ether_ifattach to ETHERMTU */ 582178354Ssam 583178354Ssam IEEE80211_LOCK(ic); 584178354Ssam TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); 585178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 586190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 587178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 588190391Ssam#endif 589178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 590178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 591193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 592193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 593178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 594178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 595178354Ssam IEEE80211_UNLOCK(ic); 596178354Ssam 597178354Ssam return 1; 598178354Ssam} 599178354Ssam 600178354Ssam/* 601178354Ssam * Tear down vap state and reclaim the ifnet. 602178354Ssam * The driver is assumed to have prepared for 603178354Ssam * this; e.g. by turning off interrupts for the 604178354Ssam * underlying device. 605178354Ssam */ 606178354Ssamvoid 607178354Ssamieee80211_vap_detach(struct ieee80211vap *vap) 608178354Ssam{ 609178354Ssam struct ieee80211com *ic = vap->iv_ic; 610178354Ssam struct ifnet *ifp = vap->iv_ifp; 611178354Ssam 612242149Sadrian CURVNET_SET(ifp->if_vnet); 613242149Sadrian 614178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", 615178354Ssam __func__, ieee80211_opmode_name[vap->iv_opmode], 616178354Ssam ic->ic_ifp->if_xname); 617178354Ssam 618193312Ssam /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ 619193312Ssam ether_ifdetach(ifp); 620178354Ssam 621193312Ssam ieee80211_stop(vap); 622193312Ssam 623191746Sthompsa /* 624191746Sthompsa * Flush any deferred vap tasks. 625191746Sthompsa */ 626191746Sthompsa ieee80211_draintask(ic, &vap->iv_nstate_task); 627191746Sthompsa ieee80211_draintask(ic, &vap->iv_swbmiss_task); 628191746Sthompsa 629196159Ssam /* XXX band-aid until ifnet handles this for us */ 630196159Ssam taskqueue_drain(taskqueue_swi, &ifp->if_linktask); 631196159Ssam 632191746Sthompsa IEEE80211_LOCK(ic); 633191746Sthompsa KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); 634178354Ssam TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); 635178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_WME); 636190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 637178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); 638190391Ssam#endif 639178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); 640178354Ssam ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); 641193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); 642193655Ssam ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); 643192468Ssam /* NB: this handles the bpfdetach done below */ 644192468Ssam ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); 645178354Ssam ieee80211_syncifflag_locked(ic, IFF_PROMISC); 646178354Ssam ieee80211_syncifflag_locked(ic, IFF_ALLMULTI); 647178354Ssam IEEE80211_UNLOCK(ic); 648178354Ssam 649178354Ssam ifmedia_removeall(&vap->iv_media); 650178354Ssam 651192468Ssam ieee80211_radiotap_vdetach(vap); 652178354Ssam ieee80211_regdomain_vdetach(vap); 653178354Ssam ieee80211_scan_vdetach(vap); 654190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 655190391Ssam ieee80211_superg_vdetach(vap); 656190391Ssam#endif 657178354Ssam ieee80211_ht_vdetach(vap); 658178354Ssam /* NB: must be before ieee80211_node_vdetach */ 659178354Ssam ieee80211_proto_vdetach(vap); 660178354Ssam ieee80211_crypto_vdetach(vap); 661178354Ssam ieee80211_power_vdetach(vap); 662178354Ssam ieee80211_node_vdetach(vap); 663178354Ssam ieee80211_sysctl_vdetach(vap); 664182674Sweongyo 665182674Sweongyo if_free(ifp); 666242149Sadrian 667242149Sadrian CURVNET_RESTORE(); 668116742Ssam} 669116742Ssam 670178354Ssam/* 671178354Ssam * Synchronize flag bit state in the parent ifnet structure 672178354Ssam * according to the state of all vap ifnet's. This is used, 673178354Ssam * for example, to handle IFF_PROMISC and IFF_ALLMULTI. 674178354Ssam */ 675178354Ssamvoid 676178354Ssamieee80211_syncifflag_locked(struct ieee80211com *ic, int flag) 677178354Ssam{ 678178354Ssam struct ifnet *ifp = ic->ic_ifp; 679178354Ssam struct ieee80211vap *vap; 680178354Ssam int bit, oflags; 681178354Ssam 682178354Ssam IEEE80211_LOCK_ASSERT(ic); 683178354Ssam 684178354Ssam bit = 0; 685178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 686178354Ssam if (vap->iv_ifp->if_flags & flag) { 687178354Ssam /* 688178354Ssam * XXX the bridge sets PROMISC but we don't want to 689178354Ssam * enable it on the device, discard here so all the 690178354Ssam * drivers don't need to special-case it 691178354Ssam */ 692178354Ssam if (flag == IFF_PROMISC && 693195847Ssam !(vap->iv_opmode == IEEE80211_M_MONITOR || 694196004Ssam (vap->iv_opmode == IEEE80211_M_AHDEMO && 695196004Ssam (vap->iv_caps & IEEE80211_C_TDMA) == 0))) 696178354Ssam continue; 697178354Ssam bit = 1; 698178354Ssam break; 699178354Ssam } 700178354Ssam oflags = ifp->if_flags; 701178354Ssam if (bit) 702178354Ssam ifp->if_flags |= flag; 703178354Ssam else 704178354Ssam ifp->if_flags &= ~flag; 705178354Ssam if ((ifp->if_flags ^ oflags) & flag) { 706178354Ssam /* XXX should we return 1/0 and let caller do this? */ 707178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 708178354Ssam if (flag == IFF_PROMISC) 709191746Sthompsa ieee80211_runtask(ic, &ic->ic_promisc_task); 710178354Ssam else if (flag == IFF_ALLMULTI) 711191746Sthompsa ieee80211_runtask(ic, &ic->ic_mcast_task); 712178354Ssam } 713178354Ssam } 714178354Ssam} 715178354Ssam 716178354Ssam/* 717178354Ssam * Synchronize flag bit state in the com structure 718178354Ssam * according to the state of all vap's. This is used, 719178354Ssam * for example, to handle state changes via ioctls. 720178354Ssam */ 721178354Ssamstatic void 722178354Ssamieee80211_syncflag_locked(struct ieee80211com *ic, int flag) 723178354Ssam{ 724178354Ssam struct ieee80211vap *vap; 725178354Ssam int bit; 726178354Ssam 727178354Ssam IEEE80211_LOCK_ASSERT(ic); 728178354Ssam 729178354Ssam bit = 0; 730178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 731178354Ssam if (vap->iv_flags & flag) { 732178354Ssam bit = 1; 733178354Ssam break; 734178354Ssam } 735178354Ssam if (bit) 736178354Ssam ic->ic_flags |= flag; 737178354Ssam else 738178354Ssam ic->ic_flags &= ~flag; 739178354Ssam} 740178354Ssam 741178354Ssamvoid 742178354Ssamieee80211_syncflag(struct ieee80211vap *vap, int flag) 743178354Ssam{ 744178354Ssam struct ieee80211com *ic = vap->iv_ic; 745178354Ssam 746178354Ssam IEEE80211_LOCK(ic); 747178354Ssam if (flag < 0) { 748178354Ssam flag = -flag; 749178354Ssam vap->iv_flags &= ~flag; 750178354Ssam } else 751178354Ssam vap->iv_flags |= flag; 752178354Ssam ieee80211_syncflag_locked(ic, flag); 753178354Ssam IEEE80211_UNLOCK(ic); 754178354Ssam} 755178354Ssam 756178354Ssam/* 757193655Ssam * Synchronize flags_ht bit state in the com structure 758178354Ssam * according to the state of all vap's. This is used, 759178354Ssam * for example, to handle state changes via ioctls. 760178354Ssam */ 761178354Ssamstatic void 762193655Ssamieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) 763193655Ssam{ 764193655Ssam struct ieee80211vap *vap; 765193655Ssam int bit; 766193655Ssam 767193655Ssam IEEE80211_LOCK_ASSERT(ic); 768193655Ssam 769193655Ssam bit = 0; 770193655Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 771193655Ssam if (vap->iv_flags_ht & flag) { 772193655Ssam bit = 1; 773193655Ssam break; 774193655Ssam } 775193655Ssam if (bit) 776193655Ssam ic->ic_flags_ht |= flag; 777193655Ssam else 778193655Ssam ic->ic_flags_ht &= ~flag; 779193655Ssam} 780193655Ssam 781193655Ssamvoid 782193655Ssamieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) 783193655Ssam{ 784193655Ssam struct ieee80211com *ic = vap->iv_ic; 785193655Ssam 786193655Ssam IEEE80211_LOCK(ic); 787193655Ssam if (flag < 0) { 788193655Ssam flag = -flag; 789193655Ssam vap->iv_flags_ht &= ~flag; 790193655Ssam } else 791193655Ssam vap->iv_flags_ht |= flag; 792193655Ssam ieee80211_syncflag_ht_locked(ic, flag); 793193655Ssam IEEE80211_UNLOCK(ic); 794193655Ssam} 795193655Ssam 796193655Ssam/* 797193655Ssam * Synchronize flags_ext bit state in the com structure 798193655Ssam * according to the state of all vap's. This is used, 799193655Ssam * for example, to handle state changes via ioctls. 800193655Ssam */ 801193655Ssamstatic void 802178354Ssamieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) 803178354Ssam{ 804178354Ssam struct ieee80211vap *vap; 805178354Ssam int bit; 806178354Ssam 807178354Ssam IEEE80211_LOCK_ASSERT(ic); 808178354Ssam 809178354Ssam bit = 0; 810178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 811178354Ssam if (vap->iv_flags_ext & flag) { 812178354Ssam bit = 1; 813178354Ssam break; 814178354Ssam } 815178354Ssam if (bit) 816178354Ssam ic->ic_flags_ext |= flag; 817178354Ssam else 818178354Ssam ic->ic_flags_ext &= ~flag; 819178354Ssam} 820178354Ssam 821178354Ssamvoid 822178354Ssamieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) 823178354Ssam{ 824178354Ssam struct ieee80211com *ic = vap->iv_ic; 825178354Ssam 826178354Ssam IEEE80211_LOCK(ic); 827178354Ssam if (flag < 0) { 828178354Ssam flag = -flag; 829178354Ssam vap->iv_flags_ext &= ~flag; 830178354Ssam } else 831178354Ssam vap->iv_flags_ext |= flag; 832178354Ssam ieee80211_syncflag_ext_locked(ic, flag); 833178354Ssam IEEE80211_UNLOCK(ic); 834178354Ssam} 835178354Ssam 836166012Ssamstatic __inline int 837166012Ssammapgsm(u_int freq, u_int flags) 838166012Ssam{ 839166012Ssam freq *= 10; 840166012Ssam if (flags & IEEE80211_CHAN_QUARTER) 841166012Ssam freq += 5; 842166012Ssam else if (flags & IEEE80211_CHAN_HALF) 843166012Ssam freq += 10; 844166012Ssam else 845166012Ssam freq += 20; 846166012Ssam /* NB: there is no 907/20 wide but leave room */ 847166012Ssam return (freq - 906*10) / 5; 848166012Ssam} 849166012Ssam 850166012Ssamstatic __inline int 851166012Ssammappsb(u_int freq, u_int flags) 852166012Ssam{ 853166012Ssam return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; 854166012Ssam} 855166012Ssam 856116742Ssam/* 857116742Ssam * Convert MHz frequency to IEEE channel number. 858116742Ssam */ 859152450Ssamint 860116742Ssamieee80211_mhz2ieee(u_int freq, u_int flags) 861116742Ssam{ 862167430Ssam#define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) 863166012Ssam if (flags & IEEE80211_CHAN_GSM) 864166012Ssam return mapgsm(freq, flags); 865116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 866116742Ssam if (freq == 2484) 867116742Ssam return 14; 868116742Ssam if (freq < 2484) 869152450Ssam return ((int) freq - 2407) / 5; 870116742Ssam else 871116742Ssam return 15 + ((freq - 2512) / 20); 872116899Ssam } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 873165569Ssam if (freq <= 5000) { 874170530Ssam /* XXX check regdomain? */ 875167430Ssam if (IS_FREQ_IN_PSB(freq)) 876166012Ssam return mappsb(freq, flags); 877152450Ssam return (freq - 4000) / 5; 878165569Ssam } else 879152450Ssam return (freq - 5000) / 5; 880116742Ssam } else { /* either, guess */ 881116742Ssam if (freq == 2484) 882116742Ssam return 14; 883166012Ssam if (freq < 2484) { 884166012Ssam if (907 <= freq && freq <= 922) 885166012Ssam return mapgsm(freq, flags); 886152450Ssam return ((int) freq - 2407) / 5; 887166012Ssam } 888152450Ssam if (freq < 5000) { 889167430Ssam if (IS_FREQ_IN_PSB(freq)) 890166012Ssam return mappsb(freq, flags); 891165569Ssam else if (freq > 4900) 892152450Ssam return (freq - 4000) / 5; 893152450Ssam else 894152450Ssam return 15 + ((freq - 2512) / 20); 895152450Ssam } 896116742Ssam return (freq - 5000) / 5; 897116742Ssam } 898167430Ssam#undef IS_FREQ_IN_PSB 899116742Ssam} 900116742Ssam 901116742Ssam/* 902116742Ssam * Convert channel to IEEE channel number. 903116742Ssam */ 904152450Ssamint 905165825Smjacobieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) 906116742Ssam{ 907170530Ssam if (c == NULL) { 908138568Ssam if_printf(ic->ic_ifp, "invalid channel (NULL)\n"); 909117039Ssam return 0; /* XXX */ 910116742Ssam } 911170530Ssam return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); 912116742Ssam} 913116742Ssam 914116742Ssam/* 915116742Ssam * Convert IEEE channel number to MHz frequency. 916116742Ssam */ 917116742Ssamu_int 918116742Ssamieee80211_ieee2mhz(u_int chan, u_int flags) 919116742Ssam{ 920166012Ssam if (flags & IEEE80211_CHAN_GSM) 921166012Ssam return 907 + 5 * (chan / 10); 922116742Ssam if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 923116742Ssam if (chan == 14) 924116742Ssam return 2484; 925116742Ssam if (chan < 14) 926116742Ssam return 2407 + chan*5; 927116742Ssam else 928116742Ssam return 2512 + ((chan-15)*20); 929116742Ssam } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 930165569Ssam if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { 931165569Ssam chan -= 37; 932165569Ssam return 4940 + chan*5 + (chan % 5 ? 2 : 0); 933165569Ssam } 934116742Ssam return 5000 + (chan*5); 935116742Ssam } else { /* either, guess */ 936166012Ssam /* XXX can't distinguish PSB+GSM channels */ 937116742Ssam if (chan == 14) 938116742Ssam return 2484; 939116742Ssam if (chan < 14) /* 0-13 */ 940116742Ssam return 2407 + chan*5; 941116742Ssam if (chan < 27) /* 15-26 */ 942116742Ssam return 2512 + ((chan-15)*20); 943116742Ssam return 5000 + (chan*5); 944116742Ssam } 945116742Ssam} 946116742Ssam 947116742Ssam/* 948170530Ssam * Locate a channel given a frequency+flags. We cache 949178354Ssam * the previous lookup to optimize switching between two 950170530Ssam * channels--as happens with dynamic turbo. 951170530Ssam */ 952170530Ssamstruct ieee80211_channel * 953170530Ssamieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) 954170530Ssam{ 955170530Ssam struct ieee80211_channel *c; 956170530Ssam int i; 957170530Ssam 958170530Ssam flags &= IEEE80211_CHAN_ALLTURBO; 959170530Ssam c = ic->ic_prevchan; 960170530Ssam if (c != NULL && c->ic_freq == freq && 961170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 962170530Ssam return c; 963170530Ssam /* brute force search */ 964170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 965170530Ssam c = &ic->ic_channels[i]; 966170530Ssam if (c->ic_freq == freq && 967170530Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 968170530Ssam return c; 969170530Ssam } 970170530Ssam return NULL; 971170530Ssam} 972170530Ssam 973173861Ssam/* 974173861Ssam * Locate a channel given a channel number+flags. We cache 975173861Ssam * the previous lookup to optimize switching between two 976173861Ssam * channels--as happens with dynamic turbo. 977173861Ssam */ 978173861Ssamstruct ieee80211_channel * 979173861Ssamieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) 980173861Ssam{ 981173861Ssam struct ieee80211_channel *c; 982173861Ssam int i; 983173861Ssam 984173861Ssam flags &= IEEE80211_CHAN_ALLTURBO; 985173861Ssam c = ic->ic_prevchan; 986173861Ssam if (c != NULL && c->ic_ieee == ieee && 987173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 988173861Ssam return c; 989173861Ssam /* brute force search */ 990173861Ssam for (i = 0; i < ic->ic_nchans; i++) { 991173861Ssam c = &ic->ic_channels[i]; 992173861Ssam if (c->ic_ieee == ieee && 993173861Ssam (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) 994173861Ssam return c; 995173861Ssam } 996173861Ssam return NULL; 997173861Ssam} 998173861Ssam 999170530Ssamstatic void 1000178354Ssamaddmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) 1001170530Ssam{ 1002170530Ssam#define ADD(_ic, _s, _o) \ 1003178354Ssam ifmedia_add(media, \ 1004170530Ssam IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 1005170530Ssam static const u_int mopts[IEEE80211_MODE_MAX] = { 1006188106Ssam [IEEE80211_MODE_AUTO] = IFM_AUTO, 1007188106Ssam [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, 1008188106Ssam [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, 1009188106Ssam [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, 1010188106Ssam [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, 1011188106Ssam [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1012188106Ssam [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, 1013188106Ssam [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, 1014188782Ssam [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ 1015188782Ssam [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ 1016188106Ssam [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, 1017188106Ssam [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, 1018170530Ssam }; 1019170530Ssam u_int mopt; 1020170530Ssam 1021170530Ssam mopt = mopts[mode]; 1022178354Ssam if (addsta) 1023178354Ssam ADD(ic, mword, mopt); /* STA mode has no cap */ 1024178354Ssam if (caps & IEEE80211_C_IBSS) 1025178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); 1026178354Ssam if (caps & IEEE80211_C_HOSTAP) 1027178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); 1028178354Ssam if (caps & IEEE80211_C_AHDEMO) 1029178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 1030178354Ssam if (caps & IEEE80211_C_MONITOR) 1031178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); 1032178354Ssam if (caps & IEEE80211_C_WDS) 1033178354Ssam ADD(media, mword, mopt | IFM_IEEE80211_WDS); 1034195618Srpaulo if (caps & IEEE80211_C_MBSS) 1035195618Srpaulo ADD(media, mword, mopt | IFM_IEEE80211_MBSS); 1036170530Ssam#undef ADD 1037170530Ssam} 1038170530Ssam 1039170530Ssam/* 1040116742Ssam * Setup the media data structures according to the channel and 1041178354Ssam * rate tables. 1042116742Ssam */ 1043178354Ssamstatic int 1044178354Ssamieee80211_media_setup(struct ieee80211com *ic, 1045178354Ssam struct ifmedia *media, int caps, int addsta, 1046116742Ssam ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 1047116742Ssam{ 1048228621Sbschmidt int i, j, rate, maxrate, mword, r; 1049228621Sbschmidt enum ieee80211_phymode mode; 1050170530Ssam const struct ieee80211_rateset *rs; 1051116742Ssam struct ieee80211_rateset allrates; 1052116742Ssam 1053118887Ssam /* 1054116742Ssam * Fill in media characteristics. 1055116742Ssam */ 1056178354Ssam ifmedia_init(media, 0, media_change, media_stat); 1057116742Ssam maxrate = 0; 1058170530Ssam /* 1059170530Ssam * Add media for legacy operating modes. 1060170530Ssam */ 1061116742Ssam memset(&allrates, 0, sizeof(allrates)); 1062170530Ssam for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { 1063167468Ssam if (isclr(ic->ic_modecaps, mode)) 1064116742Ssam continue; 1065178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1066116742Ssam if (mode == IEEE80211_MODE_AUTO) 1067116742Ssam continue; 1068116742Ssam rs = &ic->ic_sup_rates[mode]; 1069116742Ssam for (i = 0; i < rs->rs_nrates; i++) { 1070116742Ssam rate = rs->rs_rates[i]; 1071116742Ssam mword = ieee80211_rate2media(ic, rate, mode); 1072116742Ssam if (mword == 0) 1073116742Ssam continue; 1074178354Ssam addmedia(media, caps, addsta, mode, mword); 1075116742Ssam /* 1076170530Ssam * Add legacy rate to the collection of all rates. 1077116742Ssam */ 1078116742Ssam r = rate & IEEE80211_RATE_VAL; 1079116742Ssam for (j = 0; j < allrates.rs_nrates; j++) 1080116742Ssam if (allrates.rs_rates[j] == r) 1081116742Ssam break; 1082116742Ssam if (j == allrates.rs_nrates) { 1083116742Ssam /* unique, add to the set */ 1084116742Ssam allrates.rs_rates[j] = r; 1085116742Ssam allrates.rs_nrates++; 1086116742Ssam } 1087116742Ssam rate = (rate & IEEE80211_RATE_VAL) / 2; 1088116742Ssam if (rate > maxrate) 1089116742Ssam maxrate = rate; 1090116742Ssam } 1091116742Ssam } 1092116742Ssam for (i = 0; i < allrates.rs_nrates; i++) { 1093116742Ssam mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 1094116742Ssam IEEE80211_MODE_AUTO); 1095116742Ssam if (mword == 0) 1096116742Ssam continue; 1097170530Ssam /* NB: remove media options from mword */ 1098178354Ssam addmedia(media, caps, addsta, 1099178354Ssam IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); 1100116742Ssam } 1101170530Ssam /* 1102170530Ssam * Add HT/11n media. Note that we do not have enough 1103170530Ssam * bits in the media subtype to express the MCS so we 1104170530Ssam * use a "placeholder" media subtype and any fixed MCS 1105170530Ssam * must be specified with a different mechanism. 1106170530Ssam */ 1107188782Ssam for (; mode <= IEEE80211_MODE_11NG; mode++) { 1108170530Ssam if (isclr(ic->ic_modecaps, mode)) 1109170530Ssam continue; 1110178354Ssam addmedia(media, caps, addsta, mode, IFM_AUTO); 1111178354Ssam addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); 1112170530Ssam } 1113170530Ssam if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || 1114170530Ssam isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { 1115178354Ssam addmedia(media, caps, addsta, 1116178354Ssam IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); 1117219599Sbschmidt i = ic->ic_txstream * 8 - 1; 1118219599Sbschmidt if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) && 1119219599Sbschmidt (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) 1120219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_400ns; 1121219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40)) 1122219599Sbschmidt rate = ieee80211_htrates[i].ht40_rate_800ns; 1123219599Sbschmidt else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20)) 1124219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_400ns; 1125219599Sbschmidt else 1126219599Sbschmidt rate = ieee80211_htrates[i].ht20_rate_800ns; 1127219599Sbschmidt if (rate > maxrate) 1128219599Sbschmidt maxrate = rate; 1129170530Ssam } 1130178354Ssam return maxrate; 1131178354Ssam} 1132116742Ssam 1133178354Ssamvoid 1134178354Ssamieee80211_media_init(struct ieee80211com *ic) 1135178354Ssam{ 1136178354Ssam struct ifnet *ifp = ic->ic_ifp; 1137178354Ssam int maxrate; 1138178354Ssam 1139178354Ssam /* NB: this works because the structure is initialized to zero */ 1140178354Ssam if (!LIST_EMPTY(&ic->ic_media.ifm_list)) { 1141178354Ssam /* 1142178354Ssam * We are re-initializing the channel list; clear 1143178354Ssam * the existing media state as the media routines 1144178354Ssam * don't suppress duplicates. 1145178354Ssam */ 1146178354Ssam ifmedia_removeall(&ic->ic_media); 1147178354Ssam } 1148178354Ssam ieee80211_chan_init(ic); 1149178354Ssam 1150178354Ssam /* 1151178354Ssam * Recalculate media settings in case new channel list changes 1152178354Ssam * the set of available modes. 1153178354Ssam */ 1154178354Ssam maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1, 1155178354Ssam ieee80211com_media_change, ieee80211com_media_status); 1156170530Ssam /* NB: strip explicit mode; we're actually in autoselect */ 1157170530Ssam ifmedia_set(&ic->ic_media, 1158188106Ssam media_status(ic->ic_opmode, ic->ic_curchan) &~ 1159188106Ssam (IFM_MMASK | IFM_IEEE80211_TURBO)); 1160116742Ssam if (maxrate) 1161116742Ssam ifp->if_baudrate = IF_Mbps(maxrate); 1162178354Ssam 1163178354Ssam /* XXX need to propagate new media settings to vap's */ 1164116742Ssam} 1165116742Ssam 1166188782Ssam/* XXX inline or eliminate? */ 1167165569Ssamconst struct ieee80211_rateset * 1168165569Ssamieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) 1169165569Ssam{ 1170188774Ssam /* XXX does this work for 11ng basic rates? */ 1171170530Ssam return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; 1172165569Ssam} 1173165569Ssam 1174138568Ssamvoid 1175138568Ssamieee80211_announce(struct ieee80211com *ic) 1176138568Ssam{ 1177138568Ssam struct ifnet *ifp = ic->ic_ifp; 1178228621Sbschmidt int i, rate, mword; 1179228621Sbschmidt enum ieee80211_phymode mode; 1180170530Ssam const struct ieee80211_rateset *rs; 1181138568Ssam 1182172227Ssam /* NB: skip AUTO since it has no rates */ 1183172227Ssam for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { 1184167468Ssam if (isclr(ic->ic_modecaps, mode)) 1185138568Ssam continue; 1186138568Ssam if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 1187138568Ssam rs = &ic->ic_sup_rates[mode]; 1188138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 1189170530Ssam mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); 1190138568Ssam if (mword == 0) 1191138568Ssam continue; 1192170530Ssam rate = ieee80211_media2rate(mword); 1193138568Ssam printf("%s%d%sMbps", (i != 0 ? " " : ""), 1194170530Ssam rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); 1195138568Ssam } 1196138568Ssam printf("\n"); 1197138568Ssam } 1198170530Ssam ieee80211_ht_announce(ic); 1199138568Ssam} 1200138568Ssam 1201170530Ssamvoid 1202170530Ssamieee80211_announce_channels(struct ieee80211com *ic) 1203116742Ssam{ 1204170530Ssam const struct ieee80211_channel *c; 1205170530Ssam char type; 1206170530Ssam int i, cw; 1207170530Ssam 1208170530Ssam printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); 1209170530Ssam for (i = 0; i < ic->ic_nchans; i++) { 1210170530Ssam c = &ic->ic_channels[i]; 1211170530Ssam if (IEEE80211_IS_CHAN_ST(c)) 1212170530Ssam type = 'S'; 1213170530Ssam else if (IEEE80211_IS_CHAN_108A(c)) 1214170530Ssam type = 'T'; 1215170530Ssam else if (IEEE80211_IS_CHAN_108G(c)) 1216170530Ssam type = 'G'; 1217170530Ssam else if (IEEE80211_IS_CHAN_HT(c)) 1218170530Ssam type = 'n'; 1219170530Ssam else if (IEEE80211_IS_CHAN_A(c)) 1220170530Ssam type = 'a'; 1221170530Ssam else if (IEEE80211_IS_CHAN_ANYG(c)) 1222170530Ssam type = 'g'; 1223170530Ssam else if (IEEE80211_IS_CHAN_B(c)) 1224170530Ssam type = 'b'; 1225170530Ssam else 1226170530Ssam type = 'f'; 1227170530Ssam if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) 1228170530Ssam cw = 40; 1229170530Ssam else if (IEEE80211_IS_CHAN_HALF(c)) 1230170530Ssam cw = 10; 1231170530Ssam else if (IEEE80211_IS_CHAN_QUARTER(c)) 1232170530Ssam cw = 5; 1233170530Ssam else 1234170530Ssam cw = 20; 1235170530Ssam printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" 1236170530Ssam , c->ic_ieee, c->ic_freq, type 1237170530Ssam , cw 1238170530Ssam , IEEE80211_IS_CHAN_HT40U(c) ? '+' : 1239170530Ssam IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' 1240170530Ssam , c->ic_maxregpower 1241170530Ssam , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 1242170530Ssam , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 1243170530Ssam ); 1244170530Ssam } 1245116742Ssam} 1246116742Ssam 1247170530Ssamstatic int 1248184273Ssammedia2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) 1249170530Ssam{ 1250116742Ssam switch (IFM_MODE(ime->ifm_media)) { 1251116742Ssam case IFM_IEEE80211_11A: 1252178354Ssam *mode = IEEE80211_MODE_11A; 1253116742Ssam break; 1254116742Ssam case IFM_IEEE80211_11B: 1255178354Ssam *mode = IEEE80211_MODE_11B; 1256116742Ssam break; 1257116742Ssam case IFM_IEEE80211_11G: 1258178354Ssam *mode = IEEE80211_MODE_11G; 1259116742Ssam break; 1260124543Sonoe case IFM_IEEE80211_FH: 1261178354Ssam *mode = IEEE80211_MODE_FH; 1262124543Sonoe break; 1263170530Ssam case IFM_IEEE80211_11NA: 1264178354Ssam *mode = IEEE80211_MODE_11NA; 1265170530Ssam break; 1266170530Ssam case IFM_IEEE80211_11NG: 1267178354Ssam *mode = IEEE80211_MODE_11NG; 1268170530Ssam break; 1269116742Ssam case IFM_AUTO: 1270178354Ssam *mode = IEEE80211_MODE_AUTO; 1271116742Ssam break; 1272116742Ssam default: 1273178354Ssam return 0; 1274116742Ssam } 1275116742Ssam /* 1276138568Ssam * Turbo mode is an ``option''. 1277138568Ssam * XXX does not apply to AUTO 1278116742Ssam */ 1279116742Ssam if (ime->ifm_media & IFM_IEEE80211_TURBO) { 1280178354Ssam if (*mode == IEEE80211_MODE_11A) { 1281184273Ssam if (flags & IEEE80211_F_TURBOP) 1282178354Ssam *mode = IEEE80211_MODE_TURBO_A; 1283170530Ssam else 1284178354Ssam *mode = IEEE80211_MODE_STURBO_A; 1285178354Ssam } else if (*mode == IEEE80211_MODE_11G) 1286178354Ssam *mode = IEEE80211_MODE_TURBO_G; 1287138568Ssam else 1288178354Ssam return 0; 1289116742Ssam } 1290170530Ssam /* XXX HT40 +/- */ 1291178354Ssam return 1; 1292178354Ssam} 1293116742Ssam 1294178354Ssam/* 1295184273Ssam * Handle a media change request on the underlying interface. 1296178354Ssam */ 1297178354Ssamint 1298178354Ssamieee80211com_media_change(struct ifnet *ifp) 1299178354Ssam{ 1300184273Ssam return EINVAL; 1301178354Ssam} 1302116742Ssam 1303178354Ssam/* 1304178354Ssam * Handle a media change request on the vap interface. 1305178354Ssam */ 1306178354Ssamint 1307178354Ssamieee80211_media_change(struct ifnet *ifp) 1308178354Ssam{ 1309178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1310178354Ssam struct ifmedia_entry *ime = vap->iv_media.ifm_cur; 1311184273Ssam uint16_t newmode; 1312178354Ssam 1313184273Ssam if (!media2mode(ime, vap->iv_flags, &newmode)) 1314178354Ssam return EINVAL; 1315184273Ssam if (vap->iv_des_mode != newmode) { 1316184273Ssam vap->iv_des_mode = newmode; 1317193340Ssam /* XXX kick state machine if up+running */ 1318178354Ssam } 1319178354Ssam return 0; 1320116742Ssam} 1321116742Ssam 1322170530Ssam/* 1323170530Ssam * Common code to calculate the media status word 1324170530Ssam * from the operating mode and channel state. 1325170530Ssam */ 1326170530Ssamstatic int 1327170530Ssammedia_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) 1328170530Ssam{ 1329170530Ssam int status; 1330170530Ssam 1331170530Ssam status = IFM_IEEE80211; 1332170530Ssam switch (opmode) { 1333170530Ssam case IEEE80211_M_STA: 1334170530Ssam break; 1335170530Ssam case IEEE80211_M_IBSS: 1336170530Ssam status |= IFM_IEEE80211_ADHOC; 1337170530Ssam break; 1338170530Ssam case IEEE80211_M_HOSTAP: 1339170530Ssam status |= IFM_IEEE80211_HOSTAP; 1340170530Ssam break; 1341170530Ssam case IEEE80211_M_MONITOR: 1342170530Ssam status |= IFM_IEEE80211_MONITOR; 1343170530Ssam break; 1344170530Ssam case IEEE80211_M_AHDEMO: 1345170530Ssam status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1346170530Ssam break; 1347170530Ssam case IEEE80211_M_WDS: 1348178354Ssam status |= IFM_IEEE80211_WDS; 1349170530Ssam break; 1350195618Srpaulo case IEEE80211_M_MBSS: 1351195618Srpaulo status |= IFM_IEEE80211_MBSS; 1352195618Srpaulo break; 1353170530Ssam } 1354170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) { 1355170530Ssam status |= IFM_IEEE80211_11NA; 1356170530Ssam } else if (IEEE80211_IS_CHAN_HTG(chan)) { 1357170530Ssam status |= IFM_IEEE80211_11NG; 1358170530Ssam } else if (IEEE80211_IS_CHAN_A(chan)) { 1359170530Ssam status |= IFM_IEEE80211_11A; 1360170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 1361170530Ssam status |= IFM_IEEE80211_11B; 1362170530Ssam } else if (IEEE80211_IS_CHAN_ANYG(chan)) { 1363170530Ssam status |= IFM_IEEE80211_11G; 1364170530Ssam } else if (IEEE80211_IS_CHAN_FHSS(chan)) { 1365170530Ssam status |= IFM_IEEE80211_FH; 1366170530Ssam } 1367170530Ssam /* XXX else complain? */ 1368170530Ssam 1369170530Ssam if (IEEE80211_IS_CHAN_TURBO(chan)) 1370170530Ssam status |= IFM_IEEE80211_TURBO; 1371178354Ssam#if 0 1372178354Ssam if (IEEE80211_IS_CHAN_HT20(chan)) 1373178354Ssam status |= IFM_IEEE80211_HT20; 1374178354Ssam if (IEEE80211_IS_CHAN_HT40(chan)) 1375178354Ssam status |= IFM_IEEE80211_HT40; 1376178354Ssam#endif 1377170530Ssam return status; 1378170530Ssam} 1379170530Ssam 1380178354Ssamstatic void 1381178354Ssamieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1382178354Ssam{ 1383178354Ssam struct ieee80211com *ic = ifp->if_l2com; 1384178354Ssam struct ieee80211vap *vap; 1385178354Ssam 1386178354Ssam imr->ifm_status = IFM_AVALID; 1387178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1388178354Ssam if (vap->iv_ifp->if_flags & IFF_UP) { 1389178354Ssam imr->ifm_status |= IFM_ACTIVE; 1390178354Ssam break; 1391178354Ssam } 1392178354Ssam imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan); 1393178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1394178354Ssam imr->ifm_current = imr->ifm_active; 1395178354Ssam} 1396178354Ssam 1397116742Ssamvoid 1398116742Ssamieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1399116742Ssam{ 1400178354Ssam struct ieee80211vap *vap = ifp->if_softc; 1401178354Ssam struct ieee80211com *ic = vap->iv_ic; 1402170530Ssam enum ieee80211_phymode mode; 1403116742Ssam 1404116742Ssam imr->ifm_status = IFM_AVALID; 1405170530Ssam /* 1406170530Ssam * NB: use the current channel's mode to lock down a xmit 1407170530Ssam * rate only when running; otherwise we may have a mismatch 1408170530Ssam * in which case the rate will not be convertible. 1409170530Ssam */ 1410178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1411116742Ssam imr->ifm_status |= IFM_ACTIVE; 1412170530Ssam mode = ieee80211_chan2mode(ic->ic_curchan); 1413170530Ssam } else 1414170530Ssam mode = IEEE80211_MODE_AUTO; 1415178354Ssam imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); 1416138568Ssam /* 1417138568Ssam * Calculate a current rate if possible. 1418138568Ssam */ 1419178354Ssam if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { 1420138568Ssam /* 1421138568Ssam * A fixed rate is set, report that. 1422138568Ssam */ 1423138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1424178354Ssam vap->iv_txparms[mode].ucastrate, mode); 1425178354Ssam } else if (vap->iv_opmode == IEEE80211_M_STA) { 1426138568Ssam /* 1427138568Ssam * In station mode report the current transmit rate. 1428138568Ssam */ 1429138568Ssam imr->ifm_active |= ieee80211_rate2media(ic, 1430178354Ssam vap->iv_bss->ni_txrate, mode); 1431128966Sandre } else 1432138568Ssam imr->ifm_active |= IFM_AUTO; 1433178354Ssam if (imr->ifm_status & IFM_ACTIVE) 1434178354Ssam imr->ifm_current = imr->ifm_active; 1435116742Ssam} 1436116742Ssam 1437116742Ssam/* 1438116742Ssam * Set the current phy mode and recalculate the active channel 1439116742Ssam * set based on the available channels for this mode. Also 1440116742Ssam * select a new default/current channel if the current one is 1441116742Ssam * inappropriate for this mode. 1442116742Ssam */ 1443116742Ssamint 1444116742Ssamieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 1445116742Ssam{ 1446116742Ssam /* 1447166012Ssam * Adjust basic rates in 11b/11g supported rate set. 1448166012Ssam * Note that if operating on a hal/quarter rate channel 1449166012Ssam * this is a noop as those rates sets are different 1450166012Ssam * and used instead. 1451116742Ssam */ 1452166012Ssam if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) 1453178354Ssam ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); 1454166012Ssam 1455116742Ssam ic->ic_curmode = mode; 1456138568Ssam ieee80211_reset_erp(ic); /* reset ERP state */ 1457138568Ssam 1458116742Ssam return 0; 1459116742Ssam} 1460116742Ssam 1461116742Ssam/* 1462170530Ssam * Return the phy mode for with the specified channel. 1463116742Ssam */ 1464116742Ssamenum ieee80211_phymode 1465170530Ssamieee80211_chan2mode(const struct ieee80211_channel *chan) 1466116742Ssam{ 1467170530Ssam 1468170530Ssam if (IEEE80211_IS_CHAN_HTA(chan)) 1469170530Ssam return IEEE80211_MODE_11NA; 1470170530Ssam else if (IEEE80211_IS_CHAN_HTG(chan)) 1471170530Ssam return IEEE80211_MODE_11NG; 1472170530Ssam else if (IEEE80211_IS_CHAN_108G(chan)) 1473170530Ssam return IEEE80211_MODE_TURBO_G; 1474170530Ssam else if (IEEE80211_IS_CHAN_ST(chan)) 1475170530Ssam return IEEE80211_MODE_STURBO_A; 1476170530Ssam else if (IEEE80211_IS_CHAN_TURBO(chan)) 1477153350Ssam return IEEE80211_MODE_TURBO_A; 1478188782Ssam else if (IEEE80211_IS_CHAN_HALF(chan)) 1479188782Ssam return IEEE80211_MODE_HALF; 1480188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(chan)) 1481188782Ssam return IEEE80211_MODE_QUARTER; 1482170530Ssam else if (IEEE80211_IS_CHAN_A(chan)) 1483116742Ssam return IEEE80211_MODE_11A; 1484170530Ssam else if (IEEE80211_IS_CHAN_ANYG(chan)) 1485116742Ssam return IEEE80211_MODE_11G; 1486170530Ssam else if (IEEE80211_IS_CHAN_B(chan)) 1487116742Ssam return IEEE80211_MODE_11B; 1488170530Ssam else if (IEEE80211_IS_CHAN_FHSS(chan)) 1489170530Ssam return IEEE80211_MODE_FH; 1490170530Ssam 1491170530Ssam /* NB: should not get here */ 1492170530Ssam printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", 1493170530Ssam __func__, chan->ic_freq, chan->ic_flags); 1494170530Ssam return IEEE80211_MODE_11B; 1495116742Ssam} 1496116742Ssam 1497170530Ssamstruct ratemedia { 1498170530Ssam u_int match; /* rate + mode */ 1499170530Ssam u_int media; /* if_media rate */ 1500170530Ssam}; 1501170530Ssam 1502170530Ssamstatic int 1503170530Ssamfindmedia(const struct ratemedia rates[], int n, u_int match) 1504170530Ssam{ 1505170530Ssam int i; 1506170530Ssam 1507170530Ssam for (i = 0; i < n; i++) 1508170530Ssam if (rates[i].match == match) 1509170530Ssam return rates[i].media; 1510170530Ssam return IFM_AUTO; 1511170530Ssam} 1512170530Ssam 1513116742Ssam/* 1514170530Ssam * Convert IEEE80211 rate value to ifmedia subtype. 1515170530Ssam * Rate is either a legacy rate in units of 0.5Mbps 1516170530Ssam * or an MCS index. 1517116742Ssam */ 1518116742Ssamint 1519116742Ssamieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 1520116742Ssam{ 1521116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1522170530Ssam static const struct ratemedia rates[] = { 1523124543Sonoe { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 1524124543Sonoe { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 1525124543Sonoe { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 1526124543Sonoe { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 1527124543Sonoe { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 1528124543Sonoe { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 1529124543Sonoe { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 1530124543Sonoe { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 1531124543Sonoe { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 1532124543Sonoe { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 1533124543Sonoe { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 1534124543Sonoe { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 1535124543Sonoe { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 1536124543Sonoe { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 1537124543Sonoe { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 1538124543Sonoe { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 1539124543Sonoe { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 1540124543Sonoe { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 1541124543Sonoe { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 1542124543Sonoe { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 1543124543Sonoe { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 1544124543Sonoe { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 1545124543Sonoe { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 1546124543Sonoe { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 1547124543Sonoe { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 1548124543Sonoe { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 1549124543Sonoe { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 1550165569Ssam { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, 1551165569Ssam { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, 1552165569Ssam { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, 1553116742Ssam /* NB: OFDM72 doesn't realy exist so we don't handle it */ 1554116742Ssam }; 1555170530Ssam static const struct ratemedia htrates[] = { 1556170530Ssam { 0, IFM_IEEE80211_MCS }, 1557170530Ssam { 1, IFM_IEEE80211_MCS }, 1558170530Ssam { 2, IFM_IEEE80211_MCS }, 1559170530Ssam { 3, IFM_IEEE80211_MCS }, 1560170530Ssam { 4, IFM_IEEE80211_MCS }, 1561170530Ssam { 5, IFM_IEEE80211_MCS }, 1562170530Ssam { 6, IFM_IEEE80211_MCS }, 1563170530Ssam { 7, IFM_IEEE80211_MCS }, 1564170530Ssam { 8, IFM_IEEE80211_MCS }, 1565170530Ssam { 9, IFM_IEEE80211_MCS }, 1566170530Ssam { 10, IFM_IEEE80211_MCS }, 1567170530Ssam { 11, IFM_IEEE80211_MCS }, 1568170530Ssam { 12, IFM_IEEE80211_MCS }, 1569170530Ssam { 13, IFM_IEEE80211_MCS }, 1570170530Ssam { 14, IFM_IEEE80211_MCS }, 1571170530Ssam { 15, IFM_IEEE80211_MCS }, 1572219456Sbschmidt { 16, IFM_IEEE80211_MCS }, 1573219456Sbschmidt { 17, IFM_IEEE80211_MCS }, 1574219456Sbschmidt { 18, IFM_IEEE80211_MCS }, 1575219456Sbschmidt { 19, IFM_IEEE80211_MCS }, 1576219456Sbschmidt { 20, IFM_IEEE80211_MCS }, 1577219456Sbschmidt { 21, IFM_IEEE80211_MCS }, 1578219456Sbschmidt { 22, IFM_IEEE80211_MCS }, 1579219456Sbschmidt { 23, IFM_IEEE80211_MCS }, 1580219456Sbschmidt { 24, IFM_IEEE80211_MCS }, 1581219456Sbschmidt { 25, IFM_IEEE80211_MCS }, 1582219456Sbschmidt { 26, IFM_IEEE80211_MCS }, 1583219456Sbschmidt { 27, IFM_IEEE80211_MCS }, 1584219456Sbschmidt { 28, IFM_IEEE80211_MCS }, 1585219456Sbschmidt { 29, IFM_IEEE80211_MCS }, 1586219456Sbschmidt { 30, IFM_IEEE80211_MCS }, 1587219456Sbschmidt { 31, IFM_IEEE80211_MCS }, 1588219456Sbschmidt { 32, IFM_IEEE80211_MCS }, 1589219456Sbschmidt { 33, IFM_IEEE80211_MCS }, 1590219456Sbschmidt { 34, IFM_IEEE80211_MCS }, 1591219456Sbschmidt { 35, IFM_IEEE80211_MCS }, 1592219456Sbschmidt { 36, IFM_IEEE80211_MCS }, 1593219456Sbschmidt { 37, IFM_IEEE80211_MCS }, 1594219456Sbschmidt { 38, IFM_IEEE80211_MCS }, 1595219456Sbschmidt { 39, IFM_IEEE80211_MCS }, 1596219456Sbschmidt { 40, IFM_IEEE80211_MCS }, 1597219456Sbschmidt { 41, IFM_IEEE80211_MCS }, 1598219456Sbschmidt { 42, IFM_IEEE80211_MCS }, 1599219456Sbschmidt { 43, IFM_IEEE80211_MCS }, 1600219456Sbschmidt { 44, IFM_IEEE80211_MCS }, 1601219456Sbschmidt { 45, IFM_IEEE80211_MCS }, 1602219456Sbschmidt { 46, IFM_IEEE80211_MCS }, 1603219456Sbschmidt { 47, IFM_IEEE80211_MCS }, 1604219456Sbschmidt { 48, IFM_IEEE80211_MCS }, 1605219456Sbschmidt { 49, IFM_IEEE80211_MCS }, 1606219456Sbschmidt { 50, IFM_IEEE80211_MCS }, 1607219456Sbschmidt { 51, IFM_IEEE80211_MCS }, 1608219456Sbschmidt { 52, IFM_IEEE80211_MCS }, 1609219456Sbschmidt { 53, IFM_IEEE80211_MCS }, 1610219456Sbschmidt { 54, IFM_IEEE80211_MCS }, 1611219456Sbschmidt { 55, IFM_IEEE80211_MCS }, 1612219456Sbschmidt { 56, IFM_IEEE80211_MCS }, 1613219456Sbschmidt { 57, IFM_IEEE80211_MCS }, 1614219456Sbschmidt { 58, IFM_IEEE80211_MCS }, 1615219456Sbschmidt { 59, IFM_IEEE80211_MCS }, 1616219456Sbschmidt { 60, IFM_IEEE80211_MCS }, 1617219456Sbschmidt { 61, IFM_IEEE80211_MCS }, 1618219456Sbschmidt { 62, IFM_IEEE80211_MCS }, 1619219456Sbschmidt { 63, IFM_IEEE80211_MCS }, 1620219456Sbschmidt { 64, IFM_IEEE80211_MCS }, 1621219456Sbschmidt { 65, IFM_IEEE80211_MCS }, 1622219456Sbschmidt { 66, IFM_IEEE80211_MCS }, 1623219456Sbschmidt { 67, IFM_IEEE80211_MCS }, 1624219456Sbschmidt { 68, IFM_IEEE80211_MCS }, 1625219456Sbschmidt { 69, IFM_IEEE80211_MCS }, 1626219456Sbschmidt { 70, IFM_IEEE80211_MCS }, 1627219456Sbschmidt { 71, IFM_IEEE80211_MCS }, 1628219456Sbschmidt { 72, IFM_IEEE80211_MCS }, 1629219456Sbschmidt { 73, IFM_IEEE80211_MCS }, 1630219456Sbschmidt { 74, IFM_IEEE80211_MCS }, 1631219456Sbschmidt { 75, IFM_IEEE80211_MCS }, 1632219456Sbschmidt { 76, IFM_IEEE80211_MCS }, 1633170530Ssam }; 1634170530Ssam int m; 1635116742Ssam 1636170530Ssam /* 1637170530Ssam * Check 11n rates first for match as an MCS. 1638170530Ssam */ 1639170530Ssam if (mode == IEEE80211_MODE_11NA) { 1640172226Ssam if (rate & IEEE80211_RATE_MCS) { 1641172226Ssam rate &= ~IEEE80211_RATE_MCS; 1642170530Ssam m = findmedia(htrates, N(htrates), rate); 1643170530Ssam if (m != IFM_AUTO) 1644170530Ssam return m | IFM_IEEE80211_11NA; 1645170530Ssam } 1646170530Ssam } else if (mode == IEEE80211_MODE_11NG) { 1647170530Ssam /* NB: 12 is ambiguous, it will be treated as an MCS */ 1648172226Ssam if (rate & IEEE80211_RATE_MCS) { 1649172226Ssam rate &= ~IEEE80211_RATE_MCS; 1650170530Ssam m = findmedia(htrates, N(htrates), rate); 1651170530Ssam if (m != IFM_AUTO) 1652170530Ssam return m | IFM_IEEE80211_11NG; 1653170530Ssam } 1654170530Ssam } 1655170530Ssam rate &= IEEE80211_RATE_VAL; 1656116742Ssam switch (mode) { 1657116742Ssam case IEEE80211_MODE_11A: 1658188782Ssam case IEEE80211_MODE_HALF: /* XXX good 'nuf */ 1659188782Ssam case IEEE80211_MODE_QUARTER: 1660170530Ssam case IEEE80211_MODE_11NA: 1661138568Ssam case IEEE80211_MODE_TURBO_A: 1662170530Ssam case IEEE80211_MODE_STURBO_A: 1663170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A); 1664116742Ssam case IEEE80211_MODE_11B: 1665170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B); 1666124543Sonoe case IEEE80211_MODE_FH: 1667170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH); 1668116742Ssam case IEEE80211_MODE_AUTO: 1669116742Ssam /* NB: ic may be NULL for some drivers */ 1670188775Ssam if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) 1671170530Ssam return findmedia(rates, N(rates), 1672170530Ssam rate | IFM_IEEE80211_FH); 1673116742Ssam /* NB: hack, 11g matches both 11b+11a rates */ 1674116742Ssam /* fall thru... */ 1675116742Ssam case IEEE80211_MODE_11G: 1676170530Ssam case IEEE80211_MODE_11NG: 1677138568Ssam case IEEE80211_MODE_TURBO_G: 1678170530Ssam return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G); 1679116742Ssam } 1680116742Ssam return IFM_AUTO; 1681116742Ssam#undef N 1682116742Ssam} 1683116742Ssam 1684116742Ssamint 1685116742Ssamieee80211_media2rate(int mword) 1686116742Ssam{ 1687116742Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 1688116742Ssam static const int ieeerates[] = { 1689116742Ssam -1, /* IFM_AUTO */ 1690116742Ssam 0, /* IFM_MANUAL */ 1691116742Ssam 0, /* IFM_NONE */ 1692116742Ssam 2, /* IFM_IEEE80211_FH1 */ 1693116742Ssam 4, /* IFM_IEEE80211_FH2 */ 1694116742Ssam 2, /* IFM_IEEE80211_DS1 */ 1695116742Ssam 4, /* IFM_IEEE80211_DS2 */ 1696116742Ssam 11, /* IFM_IEEE80211_DS5 */ 1697116742Ssam 22, /* IFM_IEEE80211_DS11 */ 1698116742Ssam 44, /* IFM_IEEE80211_DS22 */ 1699116742Ssam 12, /* IFM_IEEE80211_OFDM6 */ 1700116742Ssam 18, /* IFM_IEEE80211_OFDM9 */ 1701116742Ssam 24, /* IFM_IEEE80211_OFDM12 */ 1702116742Ssam 36, /* IFM_IEEE80211_OFDM18 */ 1703116742Ssam 48, /* IFM_IEEE80211_OFDM24 */ 1704116742Ssam 72, /* IFM_IEEE80211_OFDM36 */ 1705116742Ssam 96, /* IFM_IEEE80211_OFDM48 */ 1706116742Ssam 108, /* IFM_IEEE80211_OFDM54 */ 1707116742Ssam 144, /* IFM_IEEE80211_OFDM72 */ 1708165569Ssam 0, /* IFM_IEEE80211_DS354k */ 1709165569Ssam 0, /* IFM_IEEE80211_DS512k */ 1710165569Ssam 6, /* IFM_IEEE80211_OFDM3 */ 1711165569Ssam 9, /* IFM_IEEE80211_OFDM4 */ 1712165569Ssam 54, /* IFM_IEEE80211_OFDM27 */ 1713170530Ssam -1, /* IFM_IEEE80211_MCS */ 1714116742Ssam }; 1715116742Ssam return IFM_SUBTYPE(mword) < N(ieeerates) ? 1716116742Ssam ieeerates[IFM_SUBTYPE(mword)] : 0; 1717116742Ssam#undef N 1718116742Ssam} 1719195379Ssam 1720195379Ssam/* 1721195379Ssam * The following hash function is adapted from "Hash Functions" by Bob Jenkins 1722195379Ssam * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). 1723195379Ssam */ 1724195379Ssam#define mix(a, b, c) \ 1725195379Ssamdo { \ 1726195379Ssam a -= b; a -= c; a ^= (c >> 13); \ 1727195379Ssam b -= c; b -= a; b ^= (a << 8); \ 1728195379Ssam c -= a; c -= b; c ^= (b >> 13); \ 1729195379Ssam a -= b; a -= c; a ^= (c >> 12); \ 1730195379Ssam b -= c; b -= a; b ^= (a << 16); \ 1731195379Ssam c -= a; c -= b; c ^= (b >> 5); \ 1732195379Ssam a -= b; a -= c; a ^= (c >> 3); \ 1733195379Ssam b -= c; b -= a; b ^= (a << 10); \ 1734195379Ssam c -= a; c -= b; c ^= (b >> 15); \ 1735195379Ssam} while (/*CONSTCOND*/0) 1736195379Ssam 1737195379Ssamuint32_t 1738195379Ssamieee80211_mac_hash(const struct ieee80211com *ic, 1739195379Ssam const uint8_t addr[IEEE80211_ADDR_LEN]) 1740195379Ssam{ 1741195379Ssam uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; 1742195379Ssam 1743195379Ssam b += addr[5] << 8; 1744195379Ssam b += addr[4]; 1745195379Ssam a += addr[3] << 24; 1746195379Ssam a += addr[2] << 16; 1747195379Ssam a += addr[1] << 8; 1748195379Ssam a += addr[0]; 1749195379Ssam 1750195379Ssam mix(a, b, c); 1751195379Ssam 1752195379Ssam return c; 1753195379Ssam} 1754195379Ssam#undef mix 1755