2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * IEEE 802.11 generic handler
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <sys/socket.h>
42 #include <net/if_dl.h>
43 #include <net/if_media.h>
44 #include <net/if_types.h>
45 #include <net/ethernet.h>
47 #include <net80211/ieee80211_var.h>
48 #include <net80211/ieee80211_regdomain.h>
49 #ifdef IEEE80211_SUPPORT_SUPERG
50 #include <net80211/ieee80211_superg.h>
55 const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
56 [IEEE80211_MODE_AUTO] = "auto",
57 [IEEE80211_MODE_11A] = "11a",
58 [IEEE80211_MODE_11B] = "11b",
59 [IEEE80211_MODE_11G] = "11g",
60 [IEEE80211_MODE_FH] = "FH",
61 [IEEE80211_MODE_TURBO_A] = "turboA",
62 [IEEE80211_MODE_TURBO_G] = "turboG",
63 [IEEE80211_MODE_STURBO_A] = "sturboA",
64 [IEEE80211_MODE_HALF] = "half",
65 [IEEE80211_MODE_QUARTER] = "quarter",
66 [IEEE80211_MODE_11NA] = "11na",
67 [IEEE80211_MODE_11NG] = "11ng",
69 /* map ieee80211_opmode to the corresponding capability bit */
70 const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
71 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
72 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
73 [IEEE80211_M_STA] = IEEE80211_C_STA,
74 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
75 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
76 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
79 static const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
80 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
82 static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
83 static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag);
84 static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
85 static int ieee80211_media_setup(struct ieee80211com *ic,
86 struct ifmedia *media, int caps, int addsta,
87 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
88 static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
89 static int ieee80211com_media_change(struct ifnet *);
90 static int media_status(enum ieee80211_opmode,
91 const struct ieee80211_channel *);
93 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
96 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
98 #define B(r) ((r) | IEEE80211_RATE_BASIC)
99 static const struct ieee80211_rateset ieee80211_rateset_11a =
100 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
101 static const struct ieee80211_rateset ieee80211_rateset_half =
102 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
103 static const struct ieee80211_rateset ieee80211_rateset_quarter =
104 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
105 static const struct ieee80211_rateset ieee80211_rateset_11b =
106 { 4, { B(2), B(4), B(11), B(22) } };
107 /* NB: OFDM rates are handled specially based on mode */
108 static const struct ieee80211_rateset ieee80211_rateset_11g =
109 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
113 * Fill in 802.11 available channel set, mark
114 * all available channels as active, and pick
115 * a default channel if not already specified.
118 ieee80211_chan_init(struct ieee80211com *ic)
120 #define DEFAULTRATES(m, def) do { \
121 if (ic->ic_sup_rates[m].rs_nrates == 0) \
122 ic->ic_sup_rates[m] = def; \
124 struct ieee80211_channel *c;
127 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
128 ("invalid number of channels specified: %u", ic->ic_nchans));
129 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
130 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
131 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
132 for (i = 0; i < ic->ic_nchans; i++) {
133 c = &ic->ic_channels[i];
134 KASSERT(c->ic_flags != 0, ("channel with no flags"));
136 * Help drivers that work only with frequencies by filling
137 * in IEEE channel #'s if not already calculated. Note this
138 * mimics similar work done in ieee80211_setregdomain when
139 * changing regulatory state.
142 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
143 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
144 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
145 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
147 /* default max tx power to max regulatory */
148 if (c->ic_maxpower == 0)
149 c->ic_maxpower = 2*c->ic_maxregpower;
150 setbit(ic->ic_chan_avail, c->ic_ieee);
152 * Identify mode capabilities.
154 if (IEEE80211_IS_CHAN_A(c))
155 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
156 if (IEEE80211_IS_CHAN_B(c))
157 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
158 if (IEEE80211_IS_CHAN_ANYG(c))
159 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
160 if (IEEE80211_IS_CHAN_FHSS(c))
161 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
162 if (IEEE80211_IS_CHAN_108A(c))
163 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
164 if (IEEE80211_IS_CHAN_108G(c))
165 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
166 if (IEEE80211_IS_CHAN_ST(c))
167 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
168 if (IEEE80211_IS_CHAN_HALF(c))
169 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
170 if (IEEE80211_IS_CHAN_QUARTER(c))
171 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
172 if (IEEE80211_IS_CHAN_HTA(c))
173 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
174 if (IEEE80211_IS_CHAN_HTG(c))
175 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
177 /* initialize candidate channels to all available */
178 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
179 sizeof(ic->ic_chan_avail));
181 /* sort channel table to allow lookup optimizations */
182 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
184 /* invalidate any previous state */
185 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
186 ic->ic_prevchan = NULL;
187 ic->ic_csa_newchan = NULL;
188 /* arbitrarily pick the first channel */
189 ic->ic_curchan = &ic->ic_channels[0];
190 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
192 /* fillin well-known rate sets if driver has not specified */
193 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
194 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
195 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
196 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
197 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
198 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
199 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
200 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
201 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
202 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
205 * Set auto mode to reset active channel state and any desired channel.
207 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
212 null_update_mcast(struct ifnet *ifp)
214 if_printf(ifp, "need multicast update callback\n");
218 null_update_promisc(struct ifnet *ifp)
220 if_printf(ifp, "need promiscuous mode update callback\n");
224 null_output(struct ifnet *ifp, struct mbuf *m,
225 struct sockaddr *dst, struct route *ro)
227 if_printf(ifp, "discard raw packet\n");
233 null_input(struct ifnet *ifp, struct mbuf *m)
235 if_printf(ifp, "if_input should not be called\n");
240 * Attach/setup the common net80211 state. Called by
241 * the driver on attach to prior to creating any vap's.
244 ieee80211_ifattach(struct ieee80211com *ic,
245 const uint8_t macaddr[IEEE80211_ADDR_LEN])
247 struct ifnet *ifp = ic->ic_ifp;
248 struct sockaddr_dl *sdl;
251 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
253 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
254 TAILQ_INIT(&ic->ic_vaps);
256 /* Create a taskqueue for all state changes */
257 ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO,
258 taskqueue_thread_enqueue, &ic->ic_tq);
259 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s taskq",
262 * Fill in 802.11 available channel set, mark all
263 * available channels as active, and pick a default
264 * channel if not already specified.
266 ieee80211_media_init(ic);
268 ic->ic_update_mcast = null_update_mcast;
269 ic->ic_update_promisc = null_update_promisc;
271 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
272 ic->ic_lintval = ic->ic_bintval;
273 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
275 ieee80211_crypto_attach(ic);
276 ieee80211_node_attach(ic);
277 ieee80211_power_attach(ic);
278 ieee80211_proto_attach(ic);
279 #ifdef IEEE80211_SUPPORT_SUPERG
280 ieee80211_superg_attach(ic);
282 ieee80211_ht_attach(ic);
283 ieee80211_scan_attach(ic);
284 ieee80211_regdomain_attach(ic);
285 ieee80211_dfs_attach(ic);
287 ieee80211_sysctl_attach(ic);
289 ifp->if_addrlen = IEEE80211_ADDR_LEN;
292 ifp->if_mtu = IEEE80211_MTU_MAX;
293 ifp->if_broadcastaddr = ieee80211broadcastaddr;
294 ifp->if_output = null_output;
295 ifp->if_input = null_input; /* just in case */
296 ifp->if_resolvemulti = NULL; /* NB: callers check */
298 ifa = ifaddr_byindex(ifp->if_index);
299 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
300 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
301 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
302 sdl->sdl_alen = IEEE80211_ADDR_LEN;
303 IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr);
307 * Detach net80211 state on device detach. Tear down
308 * all vap's and reclaim all common state prior to the
309 * device state going away. Note we may call back into
310 * driver; it must be prepared for this.
313 ieee80211_ifdetach(struct ieee80211com *ic)
315 struct ifnet *ifp = ic->ic_ifp;
316 struct ieee80211vap *vap;
320 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
321 ieee80211_vap_destroy(vap);
322 ieee80211_waitfor_parent(ic);
324 ieee80211_sysctl_detach(ic);
325 ieee80211_dfs_detach(ic);
326 ieee80211_regdomain_detach(ic);
327 ieee80211_scan_detach(ic);
328 #ifdef IEEE80211_SUPPORT_SUPERG
329 ieee80211_superg_detach(ic);
331 ieee80211_ht_detach(ic);
332 /* NB: must be called before ieee80211_node_detach */
333 ieee80211_proto_detach(ic);
334 ieee80211_crypto_detach(ic);
335 ieee80211_power_detach(ic);
336 ieee80211_node_detach(ic);
338 ifmedia_removeall(&ic->ic_media);
339 taskqueue_free(ic->ic_tq);
340 IEEE80211_LOCK_DESTROY(ic);
344 * Default reset method for use with the ioctl support. This
345 * method is invoked after any state change in the 802.11
346 * layer that should be propagated to the hardware but not
347 * require re-initialization of the 802.11 state machine (e.g
348 * rescanning for an ap). We always return ENETRESET which
349 * should cause the driver to re-initialize the device. Drivers
350 * can override this method to implement more optimized support.
353 default_reset(struct ieee80211vap *vap, u_long cmd)
359 * Prepare a vap for use. Drivers use this call to
360 * setup net80211 state in new vap's prior attaching
361 * them with ieee80211_vap_attach (below).
364 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
365 const char name[IFNAMSIZ], int unit, int opmode, int flags,
366 const uint8_t bssid[IEEE80211_ADDR_LEN],
367 const uint8_t macaddr[IEEE80211_ADDR_LEN])
371 ifp = if_alloc(IFT_ETHER);
373 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
377 if_initname(ifp, name, unit);
378 ifp->if_softc = vap; /* back pointer */
379 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
380 ifp->if_start = ieee80211_start;
381 ifp->if_ioctl = ieee80211_ioctl;
382 ifp->if_watchdog = NULL; /* NB: no watchdog routine */
383 ifp->if_init = ieee80211_init;
384 /* NB: input+output filled in by ether_ifattach */
385 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
386 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
387 IFQ_SET_READY(&ifp->if_snd);
391 vap->iv_flags = ic->ic_flags; /* propagate common flags */
392 vap->iv_flags_ext = ic->ic_flags_ext;
393 vap->iv_flags_ven = ic->ic_flags_ven;
394 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
395 vap->iv_htcaps = ic->ic_htcaps;
396 vap->iv_opmode = opmode;
397 vap->iv_caps |= ieee80211_opcap[opmode];
399 case IEEE80211_M_WDS:
401 * WDS links must specify the bssid of the far end.
402 * For legacy operation this is a static relationship.
403 * For non-legacy operation the station must associate
404 * and be authorized to pass traffic. Plumbing the
405 * vap to the proper node happens when the vap
406 * transitions to RUN state.
408 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
409 vap->iv_flags |= IEEE80211_F_DESBSSID;
410 if (flags & IEEE80211_CLONE_WDSLEGACY)
411 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
413 #ifdef IEEE80211_SUPPORT_TDMA
414 case IEEE80211_M_AHDEMO:
415 if (flags & IEEE80211_CLONE_TDMA) {
416 /* NB: checked before clone operation allowed */
417 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
418 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
420 * Propagate TDMA capability to mark vap; this
421 * cannot be removed and is used to distinguish
422 * regular ahdemo operation from ahdemo+tdma.
424 vap->iv_caps |= IEEE80211_C_TDMA;
429 /* auto-enable s/w beacon miss support */
430 if (flags & IEEE80211_CLONE_NOBEACONS)
431 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
433 * Enable various functionality by default if we're
434 * capable; the driver can override us if it knows better.
436 if (vap->iv_caps & IEEE80211_C_WME)
437 vap->iv_flags |= IEEE80211_F_WME;
438 if (vap->iv_caps & IEEE80211_C_BURST)
439 vap->iv_flags |= IEEE80211_F_BURST;
440 /* NB: bg scanning only makes sense for station mode right now */
441 if (vap->iv_opmode == IEEE80211_M_STA &&
442 (vap->iv_caps & IEEE80211_C_BGSCAN))
443 vap->iv_flags |= IEEE80211_F_BGSCAN;
444 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
445 /* NB: DFS support only makes sense for ap mode right now */
446 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
447 (vap->iv_caps & IEEE80211_C_DFS))
448 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
450 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
451 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
452 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
454 * Install a default reset method for the ioctl support;
455 * the driver can override this.
457 vap->iv_reset = default_reset;
459 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
461 ieee80211_sysctl_vattach(vap);
462 ieee80211_crypto_vattach(vap);
463 ieee80211_node_vattach(vap);
464 ieee80211_power_vattach(vap);
465 ieee80211_proto_vattach(vap);
466 #ifdef IEEE80211_SUPPORT_SUPERG
467 ieee80211_superg_vattach(vap);
469 ieee80211_ht_vattach(vap);
470 ieee80211_scan_vattach(vap);
471 ieee80211_regdomain_vattach(vap);
472 ieee80211_radiotap_vattach(vap);
478 * Activate a vap. State should have been prepared with a
479 * call to ieee80211_vap_setup and by the driver. On return
480 * from this call the vap is ready for use.
483 ieee80211_vap_attach(struct ieee80211vap *vap,
484 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
486 struct ifnet *ifp = vap->iv_ifp;
487 struct ieee80211com *ic = vap->iv_ic;
488 struct ifmediareq imr;
491 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
492 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
493 __func__, ieee80211_opmode_name[vap->iv_opmode],
494 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
497 * Do late attach work that cannot happen until after
498 * the driver has had a chance to override defaults.
500 ieee80211_node_latevattach(vap);
501 ieee80211_power_latevattach(vap);
503 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
504 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
505 ieee80211_media_status(ifp, &imr);
506 /* NB: strip explicit mode; we're actually in autoselect */
507 ifmedia_set(&vap->iv_media,
508 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
510 ifp->if_baudrate = IF_Mbps(maxrate);
512 ether_ifattach(ifp, vap->iv_myaddr);
513 /* hook output method setup by ether_ifattach */
514 vap->iv_output = ifp->if_output;
515 ifp->if_output = ieee80211_output;
516 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
519 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
520 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
521 #ifdef IEEE80211_SUPPORT_SUPERG
522 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
524 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
525 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
526 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
527 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
528 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
529 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
530 IEEE80211_UNLOCK(ic);
536 * Tear down vap state and reclaim the ifnet.
537 * The driver is assumed to have prepared for
538 * this; e.g. by turning off interrupts for the
542 ieee80211_vap_detach(struct ieee80211vap *vap)
544 struct ieee80211com *ic = vap->iv_ic;
545 struct ifnet *ifp = vap->iv_ifp;
547 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
548 __func__, ieee80211_opmode_name[vap->iv_opmode],
549 ic->ic_ifp->if_xname);
551 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */
557 * Flush any deferred vap tasks.
558 * NB: must be before ether_ifdetach() and removal from ic_vaps list
560 ieee80211_draintask(ic, &vap->iv_nstate_task);
561 ieee80211_draintask(ic, &vap->iv_swbmiss_task);
564 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running"));
565 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
566 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
567 #ifdef IEEE80211_SUPPORT_SUPERG
568 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
570 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
571 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
572 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
573 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
574 /* NB: this handles the bpfdetach done below */
575 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);
576 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
577 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
578 IEEE80211_UNLOCK(ic);
580 ifmedia_removeall(&vap->iv_media);
582 ieee80211_radiotap_vdetach(vap);
583 ieee80211_regdomain_vdetach(vap);
584 ieee80211_scan_vdetach(vap);
585 #ifdef IEEE80211_SUPPORT_SUPERG
586 ieee80211_superg_vdetach(vap);
588 ieee80211_ht_vdetach(vap);
589 /* NB: must be before ieee80211_node_vdetach */
590 ieee80211_proto_vdetach(vap);
591 ieee80211_crypto_vdetach(vap);
592 ieee80211_power_vdetach(vap);
593 ieee80211_node_vdetach(vap);
594 ieee80211_sysctl_vdetach(vap);
600 * Synchronize flag bit state in the parent ifnet structure
601 * according to the state of all vap ifnet's. This is used,
602 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
605 ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
607 struct ifnet *ifp = ic->ic_ifp;
608 struct ieee80211vap *vap;
611 IEEE80211_LOCK_ASSERT(ic);
614 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
615 if (vap->iv_ifp->if_flags & flag) {
617 * XXX the bridge sets PROMISC but we don't want to
618 * enable it on the device, discard here so all the
619 * drivers don't need to special-case it
621 if (flag == IFF_PROMISC &&
622 vap->iv_opmode == IEEE80211_M_HOSTAP)
627 oflags = ifp->if_flags;
629 ifp->if_flags |= flag;
631 ifp->if_flags &= ~flag;
632 if ((ifp->if_flags ^ oflags) & flag) {
633 /* XXX should we return 1/0 and let caller do this? */
634 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
635 if (flag == IFF_PROMISC)
636 ieee80211_runtask(ic, &ic->ic_promisc_task);
637 else if (flag == IFF_ALLMULTI)
638 ieee80211_runtask(ic, &ic->ic_mcast_task);
644 * Synchronize flag bit state in the com structure
645 * according to the state of all vap's. This is used,
646 * for example, to handle state changes via ioctls.
649 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
651 struct ieee80211vap *vap;
654 IEEE80211_LOCK_ASSERT(ic);
657 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
658 if (vap->iv_flags & flag) {
663 ic->ic_flags |= flag;
665 ic->ic_flags &= ~flag;
669 ieee80211_syncflag(struct ieee80211vap *vap, int flag)
671 struct ieee80211com *ic = vap->iv_ic;
676 vap->iv_flags &= ~flag;
678 vap->iv_flags |= flag;
679 ieee80211_syncflag_locked(ic, flag);
680 IEEE80211_UNLOCK(ic);
684 * Synchronize flags_ht bit state in the com structure
685 * according to the state of all vap's. This is used,
686 * for example, to handle state changes via ioctls.
689 ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag)
691 struct ieee80211vap *vap;
694 IEEE80211_LOCK_ASSERT(ic);
697 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
698 if (vap->iv_flags_ht & flag) {
703 ic->ic_flags_ht |= flag;
705 ic->ic_flags_ht &= ~flag;
709 ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag)
711 struct ieee80211com *ic = vap->iv_ic;
716 vap->iv_flags_ht &= ~flag;
718 vap->iv_flags_ht |= flag;
719 ieee80211_syncflag_ht_locked(ic, flag);
720 IEEE80211_UNLOCK(ic);
724 * Synchronize flags_ext bit state in the com structure
725 * according to the state of all vap's. This is used,
726 * for example, to handle state changes via ioctls.
729 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
731 struct ieee80211vap *vap;
734 IEEE80211_LOCK_ASSERT(ic);
737 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
738 if (vap->iv_flags_ext & flag) {
743 ic->ic_flags_ext |= flag;
745 ic->ic_flags_ext &= ~flag;
749 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
751 struct ieee80211com *ic = vap->iv_ic;
756 vap->iv_flags_ext &= ~flag;
758 vap->iv_flags_ext |= flag;
759 ieee80211_syncflag_ext_locked(ic, flag);
760 IEEE80211_UNLOCK(ic);
764 mapgsm(u_int freq, u_int flags)
767 if (flags & IEEE80211_CHAN_QUARTER)
769 else if (flags & IEEE80211_CHAN_HALF)
773 /* NB: there is no 907/20 wide but leave room */
774 return (freq - 906*10) / 5;
778 mappsb(u_int freq, u_int flags)
780 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
784 * Convert MHz frequency to IEEE channel number.
787 ieee80211_mhz2ieee(u_int freq, u_int flags)
789 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
790 if (flags & IEEE80211_CHAN_GSM)
791 return mapgsm(freq, flags);
792 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
796 return ((int) freq - 2407) / 5;
798 return 15 + ((freq - 2512) / 20);
799 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
801 /* XXX check regdomain? */
802 if (IS_FREQ_IN_PSB(freq))
803 return mappsb(freq, flags);
804 return (freq - 4000) / 5;
806 return (freq - 5000) / 5;
807 } else { /* either, guess */
811 if (907 <= freq && freq <= 922)
812 return mapgsm(freq, flags);
813 return ((int) freq - 2407) / 5;
816 if (IS_FREQ_IN_PSB(freq))
817 return mappsb(freq, flags);
818 else if (freq > 4900)
819 return (freq - 4000) / 5;
821 return 15 + ((freq - 2512) / 20);
823 return (freq - 5000) / 5;
825 #undef IS_FREQ_IN_PSB
829 * Convert channel to IEEE channel number.
832 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
835 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
838 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
842 * Convert IEEE channel number to MHz frequency.
845 ieee80211_ieee2mhz(u_int chan, u_int flags)
847 if (flags & IEEE80211_CHAN_GSM)
848 return 907 + 5 * (chan / 10);
849 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
853 return 2407 + chan*5;
855 return 2512 + ((chan-15)*20);
856 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
857 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
859 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
861 return 5000 + (chan*5);
862 } else { /* either, guess */
863 /* XXX can't distinguish PSB+GSM channels */
866 if (chan < 14) /* 0-13 */
867 return 2407 + chan*5;
868 if (chan < 27) /* 15-26 */
869 return 2512 + ((chan-15)*20);
870 return 5000 + (chan*5);
875 * Locate a channel given a frequency+flags. We cache
876 * the previous lookup to optimize switching between two
877 * channels--as happens with dynamic turbo.
879 struct ieee80211_channel *
880 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
882 struct ieee80211_channel *c;
885 flags &= IEEE80211_CHAN_ALLTURBO;
887 if (c != NULL && c->ic_freq == freq &&
888 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
890 /* brute force search */
891 for (i = 0; i < ic->ic_nchans; i++) {
892 c = &ic->ic_channels[i];
893 if (c->ic_freq == freq &&
894 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
901 * Locate a channel given a channel number+flags. We cache
902 * the previous lookup to optimize switching between two
903 * channels--as happens with dynamic turbo.
905 struct ieee80211_channel *
906 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
908 struct ieee80211_channel *c;
911 flags &= IEEE80211_CHAN_ALLTURBO;
913 if (c != NULL && c->ic_ieee == ieee &&
914 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
916 /* brute force search */
917 for (i = 0; i < ic->ic_nchans; i++) {
918 c = &ic->ic_channels[i];
919 if (c->ic_ieee == ieee &&
920 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
927 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
929 #define ADD(_ic, _s, _o) \
931 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
932 static const u_int mopts[IEEE80211_MODE_MAX] = {
933 [IEEE80211_MODE_AUTO] = IFM_AUTO,
934 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
935 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
936 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
937 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
938 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
939 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
940 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
941 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
942 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
943 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
944 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
950 ADD(ic, mword, mopt); /* STA mode has no cap */
951 if (caps & IEEE80211_C_IBSS)
952 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
953 if (caps & IEEE80211_C_HOSTAP)
954 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
955 if (caps & IEEE80211_C_AHDEMO)
956 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
957 if (caps & IEEE80211_C_MONITOR)
958 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
959 if (caps & IEEE80211_C_WDS)
960 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
965 * Setup the media data structures according to the channel and
969 ieee80211_media_setup(struct ieee80211com *ic,
970 struct ifmedia *media, int caps, int addsta,
971 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
973 int i, j, mode, rate, maxrate, mword, r;
974 const struct ieee80211_rateset *rs;
975 struct ieee80211_rateset allrates;
978 * Fill in media characteristics.
980 ifmedia_init(media, 0, media_change, media_stat);
983 * Add media for legacy operating modes.
985 memset(&allrates, 0, sizeof(allrates));
986 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
987 if (isclr(ic->ic_modecaps, mode))
989 addmedia(media, caps, addsta, mode, IFM_AUTO);
990 if (mode == IEEE80211_MODE_AUTO)
992 rs = &ic->ic_sup_rates[mode];
993 for (i = 0; i < rs->rs_nrates; i++) {
994 rate = rs->rs_rates[i];
995 mword = ieee80211_rate2media(ic, rate, mode);
998 addmedia(media, caps, addsta, mode, mword);
1000 * Add legacy rate to the collection of all rates.
1002 r = rate & IEEE80211_RATE_VAL;
1003 for (j = 0; j < allrates.rs_nrates; j++)
1004 if (allrates.rs_rates[j] == r)
1006 if (j == allrates.rs_nrates) {
1007 /* unique, add to the set */
1008 allrates.rs_rates[j] = r;
1009 allrates.rs_nrates++;
1011 rate = (rate & IEEE80211_RATE_VAL) / 2;
1016 for (i = 0; i < allrates.rs_nrates; i++) {
1017 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
1018 IEEE80211_MODE_AUTO);
1021 /* NB: remove media options from mword */
1022 addmedia(media, caps, addsta,
1023 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
1026 * Add HT/11n media. Note that we do not have enough
1027 * bits in the media subtype to express the MCS so we
1028 * use a "placeholder" media subtype and any fixed MCS
1029 * must be specified with a different mechanism.
1031 for (; mode <= IEEE80211_MODE_11NG; mode++) {
1032 if (isclr(ic->ic_modecaps, mode))
1034 addmedia(media, caps, addsta, mode, IFM_AUTO);
1035 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
1037 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
1038 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
1039 addmedia(media, caps, addsta,
1040 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
1041 /* XXX could walk htrates */
1042 /* XXX known array size */
1043 if (ieee80211_htrates[15].ht40_rate_400ns > maxrate)
1044 maxrate = ieee80211_htrates[15].ht40_rate_400ns;
1050 ieee80211_media_init(struct ieee80211com *ic)
1052 struct ifnet *ifp = ic->ic_ifp;
1055 /* NB: this works because the structure is initialized to zero */
1056 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
1058 * We are re-initializing the channel list; clear
1059 * the existing media state as the media routines
1060 * don't suppress duplicates.
1062 ifmedia_removeall(&ic->ic_media);
1064 ieee80211_chan_init(ic);
1067 * Recalculate media settings in case new channel list changes
1068 * the set of available modes.
1070 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1071 ieee80211com_media_change, ieee80211com_media_status);
1072 /* NB: strip explicit mode; we're actually in autoselect */
1073 ifmedia_set(&ic->ic_media,
1074 media_status(ic->ic_opmode, ic->ic_curchan) &~
1075 (IFM_MMASK | IFM_IEEE80211_TURBO));
1077 ifp->if_baudrate = IF_Mbps(maxrate);
1079 /* XXX need to propagate new media settings to vap's */
1082 /* XXX inline or eliminate? */
1083 const struct ieee80211_rateset *
1084 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1086 /* XXX does this work for 11ng basic rates? */
1087 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1091 ieee80211_announce(struct ieee80211com *ic)
1093 struct ifnet *ifp = ic->ic_ifp;
1094 int i, mode, rate, mword;
1095 const struct ieee80211_rateset *rs;
1097 /* NB: skip AUTO since it has no rates */
1098 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1099 if (isclr(ic->ic_modecaps, mode))
1101 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1102 rs = &ic->ic_sup_rates[mode];
1103 for (i = 0; i < rs->rs_nrates; i++) {
1104 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1107 rate = ieee80211_media2rate(mword);
1108 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1109 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1113 ieee80211_ht_announce(ic);
1117 ieee80211_announce_channels(struct ieee80211com *ic)
1119 const struct ieee80211_channel *c;
1123 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1124 for (i = 0; i < ic->ic_nchans; i++) {
1125 c = &ic->ic_channels[i];
1126 if (IEEE80211_IS_CHAN_ST(c))
1128 else if (IEEE80211_IS_CHAN_108A(c))
1130 else if (IEEE80211_IS_CHAN_108G(c))
1132 else if (IEEE80211_IS_CHAN_HT(c))
1134 else if (IEEE80211_IS_CHAN_A(c))
1136 else if (IEEE80211_IS_CHAN_ANYG(c))
1138 else if (IEEE80211_IS_CHAN_B(c))
1142 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1144 else if (IEEE80211_IS_CHAN_HALF(c))
1146 else if (IEEE80211_IS_CHAN_QUARTER(c))
1150 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1151 , c->ic_ieee, c->ic_freq, type
1153 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1154 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1156 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1157 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1163 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1165 switch (IFM_MODE(ime->ifm_media)) {
1166 case IFM_IEEE80211_11A:
1167 *mode = IEEE80211_MODE_11A;
1169 case IFM_IEEE80211_11B:
1170 *mode = IEEE80211_MODE_11B;
1172 case IFM_IEEE80211_11G:
1173 *mode = IEEE80211_MODE_11G;
1175 case IFM_IEEE80211_FH:
1176 *mode = IEEE80211_MODE_FH;
1178 case IFM_IEEE80211_11NA:
1179 *mode = IEEE80211_MODE_11NA;
1181 case IFM_IEEE80211_11NG:
1182 *mode = IEEE80211_MODE_11NG;
1185 *mode = IEEE80211_MODE_AUTO;
1191 * Turbo mode is an ``option''.
1192 * XXX does not apply to AUTO
1194 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1195 if (*mode == IEEE80211_MODE_11A) {
1196 if (flags & IEEE80211_F_TURBOP)
1197 *mode = IEEE80211_MODE_TURBO_A;
1199 *mode = IEEE80211_MODE_STURBO_A;
1200 } else if (*mode == IEEE80211_MODE_11G)
1201 *mode = IEEE80211_MODE_TURBO_G;
1210 * Handle a media change request on the underlying interface.
1213 ieee80211com_media_change(struct ifnet *ifp)
1219 * Handle a media change request on the vap interface.
1222 ieee80211_media_change(struct ifnet *ifp)
1224 struct ieee80211vap *vap = ifp->if_softc;
1225 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1228 if (!media2mode(ime, vap->iv_flags, &newmode))
1230 if (vap->iv_des_mode != newmode) {
1231 vap->iv_des_mode = newmode;
1232 /* XXX kick state machine if up+running */
1238 * Common code to calculate the media status word
1239 * from the operating mode and channel state.
1242 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1246 status = IFM_IEEE80211;
1248 case IEEE80211_M_STA:
1250 case IEEE80211_M_IBSS:
1251 status |= IFM_IEEE80211_ADHOC;
1253 case IEEE80211_M_HOSTAP:
1254 status |= IFM_IEEE80211_HOSTAP;
1256 case IEEE80211_M_MONITOR:
1257 status |= IFM_IEEE80211_MONITOR;
1259 case IEEE80211_M_AHDEMO:
1260 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1262 case IEEE80211_M_WDS:
1263 status |= IFM_IEEE80211_WDS;
1266 if (IEEE80211_IS_CHAN_HTA(chan)) {
1267 status |= IFM_IEEE80211_11NA;
1268 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1269 status |= IFM_IEEE80211_11NG;
1270 } else if (IEEE80211_IS_CHAN_A(chan)) {
1271 status |= IFM_IEEE80211_11A;
1272 } else if (IEEE80211_IS_CHAN_B(chan)) {
1273 status |= IFM_IEEE80211_11B;
1274 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1275 status |= IFM_IEEE80211_11G;
1276 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1277 status |= IFM_IEEE80211_FH;
1279 /* XXX else complain? */
1281 if (IEEE80211_IS_CHAN_TURBO(chan))
1282 status |= IFM_IEEE80211_TURBO;
1284 if (IEEE80211_IS_CHAN_HT20(chan))
1285 status |= IFM_IEEE80211_HT20;
1286 if (IEEE80211_IS_CHAN_HT40(chan))
1287 status |= IFM_IEEE80211_HT40;
1293 ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1295 struct ieee80211com *ic = ifp->if_l2com;
1296 struct ieee80211vap *vap;
1298 imr->ifm_status = IFM_AVALID;
1299 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1300 if (vap->iv_ifp->if_flags & IFF_UP) {
1301 imr->ifm_status |= IFM_ACTIVE;
1304 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1305 if (imr->ifm_status & IFM_ACTIVE)
1306 imr->ifm_current = imr->ifm_active;
1310 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1312 struct ieee80211vap *vap = ifp->if_softc;
1313 struct ieee80211com *ic = vap->iv_ic;
1314 enum ieee80211_phymode mode;
1316 imr->ifm_status = IFM_AVALID;
1318 * NB: use the current channel's mode to lock down a xmit
1319 * rate only when running; otherwise we may have a mismatch
1320 * in which case the rate will not be convertible.
1322 if (vap->iv_state == IEEE80211_S_RUN) {
1323 imr->ifm_status |= IFM_ACTIVE;
1324 mode = ieee80211_chan2mode(ic->ic_curchan);
1326 mode = IEEE80211_MODE_AUTO;
1327 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1329 * Calculate a current rate if possible.
1331 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1333 * A fixed rate is set, report that.
1335 imr->ifm_active |= ieee80211_rate2media(ic,
1336 vap->iv_txparms[mode].ucastrate, mode);
1337 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1339 * In station mode report the current transmit rate.
1341 imr->ifm_active |= ieee80211_rate2media(ic,
1342 vap->iv_bss->ni_txrate, mode);
1344 imr->ifm_active |= IFM_AUTO;
1345 if (imr->ifm_status & IFM_ACTIVE)
1346 imr->ifm_current = imr->ifm_active;
1350 * Set the current phy mode and recalculate the active channel
1351 * set based on the available channels for this mode. Also
1352 * select a new default/current channel if the current one is
1353 * inappropriate for this mode.
1356 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1359 * Adjust basic rates in 11b/11g supported rate set.
1360 * Note that if operating on a hal/quarter rate channel
1361 * this is a noop as those rates sets are different
1364 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1365 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1367 ic->ic_curmode = mode;
1368 ieee80211_reset_erp(ic); /* reset ERP state */
1374 * Return the phy mode for with the specified channel.
1376 enum ieee80211_phymode
1377 ieee80211_chan2mode(const struct ieee80211_channel *chan)
1380 if (IEEE80211_IS_CHAN_HTA(chan))
1381 return IEEE80211_MODE_11NA;
1382 else if (IEEE80211_IS_CHAN_HTG(chan))
1383 return IEEE80211_MODE_11NG;
1384 else if (IEEE80211_IS_CHAN_108G(chan))
1385 return IEEE80211_MODE_TURBO_G;
1386 else if (IEEE80211_IS_CHAN_ST(chan))
1387 return IEEE80211_MODE_STURBO_A;
1388 else if (IEEE80211_IS_CHAN_TURBO(chan))
1389 return IEEE80211_MODE_TURBO_A;
1390 else if (IEEE80211_IS_CHAN_HALF(chan))
1391 return IEEE80211_MODE_HALF;
1392 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1393 return IEEE80211_MODE_QUARTER;
1394 else if (IEEE80211_IS_CHAN_A(chan))
1395 return IEEE80211_MODE_11A;
1396 else if (IEEE80211_IS_CHAN_ANYG(chan))
1397 return IEEE80211_MODE_11G;
1398 else if (IEEE80211_IS_CHAN_B(chan))
1399 return IEEE80211_MODE_11B;
1400 else if (IEEE80211_IS_CHAN_FHSS(chan))
1401 return IEEE80211_MODE_FH;
1403 /* NB: should not get here */
1404 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1405 __func__, chan->ic_freq, chan->ic_flags);
1406 return IEEE80211_MODE_11B;
1410 u_int match; /* rate + mode */
1411 u_int media; /* if_media rate */
1415 findmedia(const struct ratemedia rates[], int n, u_int match)
1419 for (i = 0; i < n; i++)
1420 if (rates[i].match == match)
1421 return rates[i].media;
1426 * Convert IEEE80211 rate value to ifmedia subtype.
1427 * Rate is either a legacy rate in units of 0.5Mbps
1431 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1433 #define N(a) (sizeof(a) / sizeof(a[0]))
1434 static const struct ratemedia rates[] = {
1435 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1436 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1437 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1438 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1439 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1440 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1441 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1442 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1443 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1444 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1445 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1446 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1447 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1448 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1449 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1450 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1451 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1452 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1453 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1454 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1455 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1456 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1457 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1458 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1459 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1460 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1461 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1462 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1463 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1464 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1465 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1467 static const struct ratemedia htrates[] = {
1468 { 0, IFM_IEEE80211_MCS },
1469 { 1, IFM_IEEE80211_MCS },
1470 { 2, IFM_IEEE80211_MCS },
1471 { 3, IFM_IEEE80211_MCS },
1472 { 4, IFM_IEEE80211_MCS },
1473 { 5, IFM_IEEE80211_MCS },
1474 { 6, IFM_IEEE80211_MCS },
1475 { 7, IFM_IEEE80211_MCS },
1476 { 8, IFM_IEEE80211_MCS },
1477 { 9, IFM_IEEE80211_MCS },
1478 { 10, IFM_IEEE80211_MCS },
1479 { 11, IFM_IEEE80211_MCS },
1480 { 12, IFM_IEEE80211_MCS },
1481 { 13, IFM_IEEE80211_MCS },
1482 { 14, IFM_IEEE80211_MCS },
1483 { 15, IFM_IEEE80211_MCS },
1488 * Check 11n rates first for match as an MCS.
1490 if (mode == IEEE80211_MODE_11NA) {
1491 if (rate & IEEE80211_RATE_MCS) {
1492 rate &= ~IEEE80211_RATE_MCS;
1493 m = findmedia(htrates, N(htrates), rate);
1495 return m | IFM_IEEE80211_11NA;
1497 } else if (mode == IEEE80211_MODE_11NG) {
1498 /* NB: 12 is ambiguous, it will be treated as an MCS */
1499 if (rate & IEEE80211_RATE_MCS) {
1500 rate &= ~IEEE80211_RATE_MCS;
1501 m = findmedia(htrates, N(htrates), rate);
1503 return m | IFM_IEEE80211_11NG;
1506 rate &= IEEE80211_RATE_VAL;
1508 case IEEE80211_MODE_11A:
1509 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1510 case IEEE80211_MODE_QUARTER:
1511 case IEEE80211_MODE_11NA:
1512 case IEEE80211_MODE_TURBO_A:
1513 case IEEE80211_MODE_STURBO_A:
1514 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A);
1515 case IEEE80211_MODE_11B:
1516 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B);
1517 case IEEE80211_MODE_FH:
1518 return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH);
1519 case IEEE80211_MODE_AUTO:
1520 /* NB: ic may be NULL for some drivers */
1521 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1522 return findmedia(rates, N(rates),
1523 rate | IFM_IEEE80211_FH);
1524 /* NB: hack, 11g matches both 11b+11a rates */
1526 case IEEE80211_MODE_11G:
1527 case IEEE80211_MODE_11NG:
1528 case IEEE80211_MODE_TURBO_G:
1529 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G);
1536 ieee80211_media2rate(int mword)
1538 #define N(a) (sizeof(a) / sizeof(a[0]))
1539 static const int ieeerates[] = {
1543 2, /* IFM_IEEE80211_FH1 */
1544 4, /* IFM_IEEE80211_FH2 */
1545 2, /* IFM_IEEE80211_DS1 */
1546 4, /* IFM_IEEE80211_DS2 */
1547 11, /* IFM_IEEE80211_DS5 */
1548 22, /* IFM_IEEE80211_DS11 */
1549 44, /* IFM_IEEE80211_DS22 */
1550 12, /* IFM_IEEE80211_OFDM6 */
1551 18, /* IFM_IEEE80211_OFDM9 */
1552 24, /* IFM_IEEE80211_OFDM12 */
1553 36, /* IFM_IEEE80211_OFDM18 */
1554 48, /* IFM_IEEE80211_OFDM24 */
1555 72, /* IFM_IEEE80211_OFDM36 */
1556 96, /* IFM_IEEE80211_OFDM48 */
1557 108, /* IFM_IEEE80211_OFDM54 */
1558 144, /* IFM_IEEE80211_OFDM72 */
1559 0, /* IFM_IEEE80211_DS354k */
1560 0, /* IFM_IEEE80211_DS512k */
1561 6, /* IFM_IEEE80211_OFDM3 */
1562 9, /* IFM_IEEE80211_OFDM4 */
1563 54, /* IFM_IEEE80211_OFDM27 */
1564 -1, /* IFM_IEEE80211_MCS */
1566 return IFM_SUBTYPE(mword) < N(ieeerates) ?
1567 ieeerates[IFM_SUBTYPE(mword)] : 0;