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_ext_locked(struct ieee80211com *ic, int flag);
84 static int ieee80211_media_setup(struct ieee80211com *ic,
85 struct ifmedia *media, int caps, int addsta,
86 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
87 static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
88 static int ieee80211com_media_change(struct ifnet *);
89 static int media_status(enum ieee80211_opmode,
90 const struct ieee80211_channel *);
92 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
95 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
97 #define B(r) ((r) | IEEE80211_RATE_BASIC)
98 static const struct ieee80211_rateset ieee80211_rateset_11a =
99 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
100 static const struct ieee80211_rateset ieee80211_rateset_half =
101 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
102 static const struct ieee80211_rateset ieee80211_rateset_quarter =
103 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
104 static const struct ieee80211_rateset ieee80211_rateset_11b =
105 { 4, { B(2), B(4), B(11), B(22) } };
106 /* NB: OFDM rates are handled specially based on mode */
107 static const struct ieee80211_rateset ieee80211_rateset_11g =
108 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
112 * Fill in 802.11 available channel set, mark
113 * all available channels as active, and pick
114 * a default channel if not already specified.
117 ieee80211_chan_init(struct ieee80211com *ic)
119 #define DEFAULTRATES(m, def) do { \
120 if (ic->ic_sup_rates[m].rs_nrates == 0) \
121 ic->ic_sup_rates[m] = def; \
123 struct ieee80211_channel *c;
126 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
127 ("invalid number of channels specified: %u", ic->ic_nchans));
128 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
129 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
130 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
131 for (i = 0; i < ic->ic_nchans; i++) {
132 c = &ic->ic_channels[i];
133 KASSERT(c->ic_flags != 0, ("channel with no flags"));
135 * Help drivers that work only with frequencies by filling
136 * in IEEE channel #'s if not already calculated. Note this
137 * mimics similar work done in ieee80211_setregdomain when
138 * changing regulatory state.
141 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
142 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
143 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
144 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
146 /* default max tx power to max regulatory */
147 if (c->ic_maxpower == 0)
148 c->ic_maxpower = 2*c->ic_maxregpower;
149 setbit(ic->ic_chan_avail, c->ic_ieee);
151 * Identify mode capabilities.
153 if (IEEE80211_IS_CHAN_A(c))
154 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
155 if (IEEE80211_IS_CHAN_B(c))
156 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
157 if (IEEE80211_IS_CHAN_ANYG(c))
158 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
159 if (IEEE80211_IS_CHAN_FHSS(c))
160 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
161 if (IEEE80211_IS_CHAN_108A(c))
162 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
163 if (IEEE80211_IS_CHAN_108G(c))
164 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
165 if (IEEE80211_IS_CHAN_ST(c))
166 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
167 if (IEEE80211_IS_CHAN_HALF(c))
168 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
169 if (IEEE80211_IS_CHAN_QUARTER(c))
170 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
171 if (IEEE80211_IS_CHAN_HTA(c))
172 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
173 if (IEEE80211_IS_CHAN_HTG(c))
174 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
176 /* initialize candidate channels to all available */
177 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
178 sizeof(ic->ic_chan_avail));
180 /* sort channel table to allow lookup optimizations */
181 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
183 /* invalidate any previous state */
184 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
185 ic->ic_prevchan = NULL;
186 ic->ic_csa_newchan = NULL;
187 /* arbitrarily pick the first channel */
188 ic->ic_curchan = &ic->ic_channels[0];
189 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
191 /* fillin well-known rate sets if driver has not specified */
192 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
193 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
194 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
195 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
196 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
197 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
198 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
199 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
200 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
201 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
204 * Set auto mode to reset active channel state and any desired channel.
206 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
211 null_update_mcast(struct ifnet *ifp)
213 if_printf(ifp, "need multicast update callback\n");
217 null_update_promisc(struct ifnet *ifp)
219 if_printf(ifp, "need promiscuous mode update callback\n");
223 null_output(struct ifnet *ifp, struct mbuf *m,
224 struct sockaddr *dst, struct route *ro)
226 if_printf(ifp, "discard raw packet\n");
232 null_input(struct ifnet *ifp, struct mbuf *m)
234 if_printf(ifp, "if_input should not be called\n");
239 * Attach/setup the common net80211 state. Called by
240 * the driver on attach to prior to creating any vap's.
243 ieee80211_ifattach(struct ieee80211com *ic,
244 const uint8_t macaddr[IEEE80211_ADDR_LEN])
246 struct ifnet *ifp = ic->ic_ifp;
247 struct sockaddr_dl *sdl;
250 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
252 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
253 TAILQ_INIT(&ic->ic_vaps);
255 * Fill in 802.11 available channel set, mark all
256 * available channels as active, and pick a default
257 * channel if not already specified.
259 ieee80211_media_init(ic);
261 ic->ic_update_mcast = null_update_mcast;
262 ic->ic_update_promisc = null_update_promisc;
264 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
265 ic->ic_lintval = ic->ic_bintval;
266 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
268 ieee80211_crypto_attach(ic);
269 ieee80211_node_attach(ic);
270 ieee80211_power_attach(ic);
271 ieee80211_proto_attach(ic);
272 #ifdef IEEE80211_SUPPORT_SUPERG
273 ieee80211_superg_attach(ic);
275 ieee80211_ht_attach(ic);
276 ieee80211_scan_attach(ic);
277 ieee80211_regdomain_attach(ic);
279 ieee80211_sysctl_attach(ic);
281 ifp->if_addrlen = IEEE80211_ADDR_LEN;
284 ifp->if_mtu = IEEE80211_MTU_MAX;
285 ifp->if_broadcastaddr = ieee80211broadcastaddr;
286 ifp->if_output = null_output;
287 ifp->if_input = null_input; /* just in case */
288 ifp->if_resolvemulti = NULL; /* NB: callers check */
290 ifa = ifaddr_byindex(ifp->if_index);
291 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
292 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
293 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
294 sdl->sdl_alen = IEEE80211_ADDR_LEN;
295 IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr);
299 * Detach net80211 state on device detach. Tear down
300 * all vap's and reclaim all common state prior to the
301 * device state going away. Note we may call back into
302 * driver; it must be prepared for this.
305 ieee80211_ifdetach(struct ieee80211com *ic)
307 struct ifnet *ifp = ic->ic_ifp;
308 struct ieee80211vap *vap;
310 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
311 ieee80211_vap_destroy(vap);
312 ieee80211_waitfor_parent(ic);
314 ieee80211_sysctl_detach(ic);
315 ieee80211_regdomain_detach(ic);
316 ieee80211_scan_detach(ic);
317 #ifdef IEEE80211_SUPPORT_SUPERG
318 ieee80211_superg_detach(ic);
320 ieee80211_ht_detach(ic);
321 /* NB: must be called before ieee80211_node_detach */
322 ieee80211_proto_detach(ic);
323 ieee80211_crypto_detach(ic);
324 ieee80211_power_detach(ic);
325 ieee80211_node_detach(ic);
326 ifmedia_removeall(&ic->ic_media);
328 IEEE80211_LOCK_DESTROY(ic);
333 * Default reset method for use with the ioctl support. This
334 * method is invoked after any state change in the 802.11
335 * layer that should be propagated to the hardware but not
336 * require re-initialization of the 802.11 state machine (e.g
337 * rescanning for an ap). We always return ENETRESET which
338 * should cause the driver to re-initialize the device. Drivers
339 * can override this method to implement more optimized support.
342 default_reset(struct ieee80211vap *vap, u_long cmd)
348 * Prepare a vap for use. Drivers use this call to
349 * setup net80211 state in new vap's prior attaching
350 * them with ieee80211_vap_attach (below).
353 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
354 const char name[IFNAMSIZ], int unit, int opmode, int flags,
355 const uint8_t bssid[IEEE80211_ADDR_LEN],
356 const uint8_t macaddr[IEEE80211_ADDR_LEN])
360 ifp = if_alloc(IFT_ETHER);
362 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
366 if_initname(ifp, name, unit);
367 ifp->if_softc = vap; /* back pointer */
368 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
369 ifp->if_start = ieee80211_start;
370 ifp->if_ioctl = ieee80211_ioctl;
371 ifp->if_watchdog = NULL; /* NB: no watchdog routine */
372 ifp->if_init = ieee80211_init;
373 /* NB: input+output filled in by ether_ifattach */
374 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
375 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
376 IFQ_SET_READY(&ifp->if_snd);
380 vap->iv_flags = ic->ic_flags; /* propagate common flags */
381 vap->iv_flags_ext = ic->ic_flags_ext;
382 vap->iv_flags_ven = ic->ic_flags_ven;
383 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
384 vap->iv_htcaps = ic->ic_htcaps;
385 vap->iv_opmode = opmode;
386 vap->iv_caps |= ieee80211_opcap[opmode];
388 case IEEE80211_M_WDS:
390 * WDS links must specify the bssid of the far end.
391 * For legacy operation this is a static relationship.
392 * For non-legacy operation the station must associate
393 * and be authorized to pass traffic. Plumbing the
394 * vap to the proper node happens when the vap
395 * transitions to RUN state.
397 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
398 vap->iv_flags |= IEEE80211_F_DESBSSID;
399 if (flags & IEEE80211_CLONE_WDSLEGACY)
400 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
402 #ifdef IEEE80211_SUPPORT_TDMA
403 case IEEE80211_M_AHDEMO:
404 if (flags & IEEE80211_CLONE_TDMA) {
405 /* NB: checked before clone operation allowed */
406 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
407 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
409 * Propagate TDMA capability to mark vap; this
410 * cannot be removed and is used to distinguish
411 * regular ahdemo operation from ahdemo+tdma.
413 vap->iv_caps |= IEEE80211_C_TDMA;
418 /* auto-enable s/w beacon miss support */
419 if (flags & IEEE80211_CLONE_NOBEACONS)
420 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
422 * Enable various functionality by default if we're
423 * capable; the driver can override us if it knows better.
425 if (vap->iv_caps & IEEE80211_C_WME)
426 vap->iv_flags |= IEEE80211_F_WME;
427 if (vap->iv_caps & IEEE80211_C_BURST)
428 vap->iv_flags |= IEEE80211_F_BURST;
429 /* NB: bg scanning only makes sense for station mode right now */
430 if (vap->iv_opmode == IEEE80211_M_STA &&
431 (vap->iv_caps & IEEE80211_C_BGSCAN))
432 vap->iv_flags |= IEEE80211_F_BGSCAN;
433 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
434 /* NB: DFS support only makes sense for ap mode right now */
435 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
436 (vap->iv_caps & IEEE80211_C_DFS))
437 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
439 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
440 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
441 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
443 * Install a default reset method for the ioctl support;
444 * the driver can override this.
446 vap->iv_reset = default_reset;
448 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
450 ieee80211_sysctl_vattach(vap);
451 ieee80211_crypto_vattach(vap);
452 ieee80211_node_vattach(vap);
453 ieee80211_power_vattach(vap);
454 ieee80211_proto_vattach(vap);
455 #ifdef IEEE80211_SUPPORT_SUPERG
456 ieee80211_superg_vattach(vap);
458 ieee80211_ht_vattach(vap);
459 ieee80211_scan_vattach(vap);
460 ieee80211_regdomain_vattach(vap);
466 * Activate a vap. State should have been prepared with a
467 * call to ieee80211_vap_setup and by the driver. On return
468 * from this call the vap is ready for use.
471 ieee80211_vap_attach(struct ieee80211vap *vap,
472 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
474 struct ifnet *ifp = vap->iv_ifp;
475 struct ieee80211com *ic = vap->iv_ic;
476 struct ifmediareq imr;
479 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
480 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
481 __func__, ieee80211_opmode_name[vap->iv_opmode],
482 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
485 * Do late attach work that cannot happen until after
486 * the driver has had a chance to override defaults.
488 ieee80211_node_latevattach(vap);
489 ieee80211_power_latevattach(vap);
491 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
492 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
493 ieee80211_media_status(ifp, &imr);
494 /* NB: strip explicit mode; we're actually in autoselect */
495 ifmedia_set(&vap->iv_media,
496 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
498 ifp->if_baudrate = IF_Mbps(maxrate);
500 ether_ifattach(ifp, vap->iv_myaddr);
501 /* hook output method setup by ether_ifattach */
502 vap->iv_output = ifp->if_output;
503 ifp->if_output = ieee80211_output;
504 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
505 bpfattach2(ifp, DLT_IEEE802_11, ifp->if_hdrlen, &vap->iv_rawbpf);
508 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
509 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
510 #ifdef IEEE80211_SUPPORT_SUPERG
511 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
513 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
514 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
515 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_HT);
516 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_USEHT40);
517 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
518 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
519 IEEE80211_UNLOCK(ic);
525 * Tear down vap state and reclaim the ifnet.
526 * The driver is assumed to have prepared for
527 * this; e.g. by turning off interrupts for the
531 ieee80211_vap_detach(struct ieee80211vap *vap)
533 struct ieee80211com *ic = vap->iv_ic;
534 struct ifnet *ifp = vap->iv_ifp;
536 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
537 __func__, ieee80211_opmode_name[vap->iv_opmode],
538 ic->ic_ifp->if_xname);
541 /* block traffic from above */
542 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
544 * Evil hack. Clear the backpointer from the ifnet to the
545 * vap so any requests from above will return an error or
546 * be ignored. In particular this short-circuits requests
547 * by the bridge to turn off promiscuous mode as a result
548 * of calling ether_ifdetach.
550 ifp->if_softc = NULL;
552 * Stop the vap before detaching the ifnet. Ideally we'd
553 * do this in the other order so the ifnet is inaccessible
554 * while we cleanup internal state but that is hard.
556 ieee80211_stop_locked(vap);
558 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
559 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
560 #ifdef IEEE80211_SUPPORT_SUPERG
561 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
563 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
564 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
565 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_HT);
566 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_USEHT40);
567 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
568 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
569 IEEE80211_UNLOCK(ic);
571 /* XXX can't hold com lock */
572 /* NB: bpfattach is called by ether_ifdetach and claims all taps */
575 ifmedia_removeall(&vap->iv_media);
577 ieee80211_regdomain_vdetach(vap);
578 ieee80211_scan_vdetach(vap);
579 #ifdef IEEE80211_SUPPORT_SUPERG
580 ieee80211_superg_vdetach(vap);
582 ieee80211_ht_vdetach(vap);
583 /* NB: must be before ieee80211_node_vdetach */
584 ieee80211_proto_vdetach(vap);
585 ieee80211_crypto_vdetach(vap);
586 ieee80211_power_vdetach(vap);
587 ieee80211_node_vdetach(vap);
588 ieee80211_sysctl_vdetach(vap);
594 * Synchronize flag bit state in the parent ifnet structure
595 * according to the state of all vap ifnet's. This is used,
596 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
599 ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
601 struct ifnet *ifp = ic->ic_ifp;
602 struct ieee80211vap *vap;
605 IEEE80211_LOCK_ASSERT(ic);
608 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
609 if (vap->iv_ifp->if_flags & flag) {
611 * XXX the bridge sets PROMISC but we don't want to
612 * enable it on the device, discard here so all the
613 * drivers don't need to special-case it
615 if (flag == IFF_PROMISC &&
616 vap->iv_opmode == IEEE80211_M_HOSTAP)
621 oflags = ifp->if_flags;
623 ifp->if_flags |= flag;
625 ifp->if_flags &= ~flag;
626 if ((ifp->if_flags ^ oflags) & flag) {
627 /* XXX should we return 1/0 and let caller do this? */
628 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
629 if (flag == IFF_PROMISC)
630 ic->ic_update_promisc(ifp);
631 else if (flag == IFF_ALLMULTI)
632 ic->ic_update_mcast(ifp);
638 * Synchronize flag bit state in the com structure
639 * according to the state of all vap's. This is used,
640 * for example, to handle state changes via ioctls.
643 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
645 struct ieee80211vap *vap;
648 IEEE80211_LOCK_ASSERT(ic);
651 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
652 if (vap->iv_flags & flag) {
657 ic->ic_flags |= flag;
659 ic->ic_flags &= ~flag;
663 ieee80211_syncflag(struct ieee80211vap *vap, int flag)
665 struct ieee80211com *ic = vap->iv_ic;
670 vap->iv_flags &= ~flag;
672 vap->iv_flags |= flag;
673 ieee80211_syncflag_locked(ic, flag);
674 IEEE80211_UNLOCK(ic);
678 * Synchronize flag bit state in the com structure
679 * according to the state of all vap's. This is used,
680 * for example, to handle state changes via ioctls.
683 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
685 struct ieee80211vap *vap;
688 IEEE80211_LOCK_ASSERT(ic);
691 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
692 if (vap->iv_flags_ext & flag) {
697 ic->ic_flags_ext |= flag;
699 ic->ic_flags_ext &= ~flag;
703 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
705 struct ieee80211com *ic = vap->iv_ic;
710 vap->iv_flags_ext &= ~flag;
712 vap->iv_flags_ext |= flag;
713 ieee80211_syncflag_ext_locked(ic, flag);
714 IEEE80211_UNLOCK(ic);
718 mapgsm(u_int freq, u_int flags)
721 if (flags & IEEE80211_CHAN_QUARTER)
723 else if (flags & IEEE80211_CHAN_HALF)
727 /* NB: there is no 907/20 wide but leave room */
728 return (freq - 906*10) / 5;
732 mappsb(u_int freq, u_int flags)
734 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
738 * Convert MHz frequency to IEEE channel number.
741 ieee80211_mhz2ieee(u_int freq, u_int flags)
743 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
744 if (flags & IEEE80211_CHAN_GSM)
745 return mapgsm(freq, flags);
746 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
750 return ((int) freq - 2407) / 5;
752 return 15 + ((freq - 2512) / 20);
753 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
755 /* XXX check regdomain? */
756 if (IS_FREQ_IN_PSB(freq))
757 return mappsb(freq, flags);
758 return (freq - 4000) / 5;
760 return (freq - 5000) / 5;
761 } else { /* either, guess */
765 if (907 <= freq && freq <= 922)
766 return mapgsm(freq, flags);
767 return ((int) freq - 2407) / 5;
770 if (IS_FREQ_IN_PSB(freq))
771 return mappsb(freq, flags);
772 else if (freq > 4900)
773 return (freq - 4000) / 5;
775 return 15 + ((freq - 2512) / 20);
777 return (freq - 5000) / 5;
779 #undef IS_FREQ_IN_PSB
783 * Convert channel to IEEE channel number.
786 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
789 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
792 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
796 * Convert IEEE channel number to MHz frequency.
799 ieee80211_ieee2mhz(u_int chan, u_int flags)
801 if (flags & IEEE80211_CHAN_GSM)
802 return 907 + 5 * (chan / 10);
803 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
807 return 2407 + chan*5;
809 return 2512 + ((chan-15)*20);
810 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
811 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
813 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
815 return 5000 + (chan*5);
816 } else { /* either, guess */
817 /* XXX can't distinguish PSB+GSM channels */
820 if (chan < 14) /* 0-13 */
821 return 2407 + chan*5;
822 if (chan < 27) /* 15-26 */
823 return 2512 + ((chan-15)*20);
824 return 5000 + (chan*5);
829 * Locate a channel given a frequency+flags. We cache
830 * the previous lookup to optimize switching between two
831 * channels--as happens with dynamic turbo.
833 struct ieee80211_channel *
834 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
836 struct ieee80211_channel *c;
839 flags &= IEEE80211_CHAN_ALLTURBO;
841 if (c != NULL && c->ic_freq == freq &&
842 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
844 /* brute force search */
845 for (i = 0; i < ic->ic_nchans; i++) {
846 c = &ic->ic_channels[i];
847 if (c->ic_freq == freq &&
848 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
855 * Locate a channel given a channel number+flags. We cache
856 * the previous lookup to optimize switching between two
857 * channels--as happens with dynamic turbo.
859 struct ieee80211_channel *
860 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
862 struct ieee80211_channel *c;
865 flags &= IEEE80211_CHAN_ALLTURBO;
867 if (c != NULL && c->ic_ieee == ieee &&
868 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
870 /* brute force search */
871 for (i = 0; i < ic->ic_nchans; i++) {
872 c = &ic->ic_channels[i];
873 if (c->ic_ieee == ieee &&
874 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
881 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
883 #define ADD(_ic, _s, _o) \
885 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
886 static const u_int mopts[IEEE80211_MODE_MAX] = {
887 [IEEE80211_MODE_AUTO] = IFM_AUTO,
888 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
889 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
890 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
891 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
892 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
893 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
894 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
895 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
896 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
897 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
898 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
904 ADD(ic, mword, mopt); /* STA mode has no cap */
905 if (caps & IEEE80211_C_IBSS)
906 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
907 if (caps & IEEE80211_C_HOSTAP)
908 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
909 if (caps & IEEE80211_C_AHDEMO)
910 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
911 if (caps & IEEE80211_C_MONITOR)
912 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
913 if (caps & IEEE80211_C_WDS)
914 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
919 * Setup the media data structures according to the channel and
923 ieee80211_media_setup(struct ieee80211com *ic,
924 struct ifmedia *media, int caps, int addsta,
925 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
927 int i, j, mode, rate, maxrate, mword, r;
928 const struct ieee80211_rateset *rs;
929 struct ieee80211_rateset allrates;
932 * Fill in media characteristics.
934 ifmedia_init(media, 0, media_change, media_stat);
937 * Add media for legacy operating modes.
939 memset(&allrates, 0, sizeof(allrates));
940 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
941 if (isclr(ic->ic_modecaps, mode))
943 addmedia(media, caps, addsta, mode, IFM_AUTO);
944 if (mode == IEEE80211_MODE_AUTO)
946 rs = &ic->ic_sup_rates[mode];
947 for (i = 0; i < rs->rs_nrates; i++) {
948 rate = rs->rs_rates[i];
949 mword = ieee80211_rate2media(ic, rate, mode);
952 addmedia(media, caps, addsta, mode, mword);
954 * Add legacy rate to the collection of all rates.
956 r = rate & IEEE80211_RATE_VAL;
957 for (j = 0; j < allrates.rs_nrates; j++)
958 if (allrates.rs_rates[j] == r)
960 if (j == allrates.rs_nrates) {
961 /* unique, add to the set */
962 allrates.rs_rates[j] = r;
963 allrates.rs_nrates++;
965 rate = (rate & IEEE80211_RATE_VAL) / 2;
970 for (i = 0; i < allrates.rs_nrates; i++) {
971 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
972 IEEE80211_MODE_AUTO);
975 /* NB: remove media options from mword */
976 addmedia(media, caps, addsta,
977 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
980 * Add HT/11n media. Note that we do not have enough
981 * bits in the media subtype to express the MCS so we
982 * use a "placeholder" media subtype and any fixed MCS
983 * must be specified with a different mechanism.
985 for (; mode <= IEEE80211_MODE_11NG; mode++) {
986 if (isclr(ic->ic_modecaps, mode))
988 addmedia(media, caps, addsta, mode, IFM_AUTO);
989 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
991 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
992 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
993 addmedia(media, caps, addsta,
994 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
995 /* XXX could walk htrates */
996 /* XXX known array size */
997 if (ieee80211_htrates[15].ht40_rate_400ns > maxrate)
998 maxrate = ieee80211_htrates[15].ht40_rate_400ns;
1004 ieee80211_media_init(struct ieee80211com *ic)
1006 struct ifnet *ifp = ic->ic_ifp;
1009 /* NB: this works because the structure is initialized to zero */
1010 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
1012 * We are re-initializing the channel list; clear
1013 * the existing media state as the media routines
1014 * don't suppress duplicates.
1016 ifmedia_removeall(&ic->ic_media);
1018 ieee80211_chan_init(ic);
1021 * Recalculate media settings in case new channel list changes
1022 * the set of available modes.
1024 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1025 ieee80211com_media_change, ieee80211com_media_status);
1026 /* NB: strip explicit mode; we're actually in autoselect */
1027 ifmedia_set(&ic->ic_media,
1028 media_status(ic->ic_opmode, ic->ic_curchan) &~
1029 (IFM_MMASK | IFM_IEEE80211_TURBO));
1031 ifp->if_baudrate = IF_Mbps(maxrate);
1033 /* XXX need to propagate new media settings to vap's */
1036 /* XXX inline or eliminate? */
1037 const struct ieee80211_rateset *
1038 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1040 /* XXX does this work for 11ng basic rates? */
1041 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1045 ieee80211_announce(struct ieee80211com *ic)
1047 struct ifnet *ifp = ic->ic_ifp;
1048 int i, mode, rate, mword;
1049 const struct ieee80211_rateset *rs;
1051 /* NB: skip AUTO since it has no rates */
1052 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1053 if (isclr(ic->ic_modecaps, mode))
1055 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1056 rs = &ic->ic_sup_rates[mode];
1057 for (i = 0; i < rs->rs_nrates; i++) {
1058 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1061 rate = ieee80211_media2rate(mword);
1062 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1063 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1067 ieee80211_ht_announce(ic);
1071 ieee80211_announce_channels(struct ieee80211com *ic)
1073 const struct ieee80211_channel *c;
1077 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1078 for (i = 0; i < ic->ic_nchans; i++) {
1079 c = &ic->ic_channels[i];
1080 if (IEEE80211_IS_CHAN_ST(c))
1082 else if (IEEE80211_IS_CHAN_108A(c))
1084 else if (IEEE80211_IS_CHAN_108G(c))
1086 else if (IEEE80211_IS_CHAN_HT(c))
1088 else if (IEEE80211_IS_CHAN_A(c))
1090 else if (IEEE80211_IS_CHAN_ANYG(c))
1092 else if (IEEE80211_IS_CHAN_B(c))
1096 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1098 else if (IEEE80211_IS_CHAN_HALF(c))
1100 else if (IEEE80211_IS_CHAN_QUARTER(c))
1104 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1105 , c->ic_ieee, c->ic_freq, type
1107 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1108 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1110 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1111 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1117 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1119 switch (IFM_MODE(ime->ifm_media)) {
1120 case IFM_IEEE80211_11A:
1121 *mode = IEEE80211_MODE_11A;
1123 case IFM_IEEE80211_11B:
1124 *mode = IEEE80211_MODE_11B;
1126 case IFM_IEEE80211_11G:
1127 *mode = IEEE80211_MODE_11G;
1129 case IFM_IEEE80211_FH:
1130 *mode = IEEE80211_MODE_FH;
1132 case IFM_IEEE80211_11NA:
1133 *mode = IEEE80211_MODE_11NA;
1135 case IFM_IEEE80211_11NG:
1136 *mode = IEEE80211_MODE_11NG;
1139 *mode = IEEE80211_MODE_AUTO;
1145 * Turbo mode is an ``option''.
1146 * XXX does not apply to AUTO
1148 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1149 if (*mode == IEEE80211_MODE_11A) {
1150 if (flags & IEEE80211_F_TURBOP)
1151 *mode = IEEE80211_MODE_TURBO_A;
1153 *mode = IEEE80211_MODE_STURBO_A;
1154 } else if (*mode == IEEE80211_MODE_11G)
1155 *mode = IEEE80211_MODE_TURBO_G;
1164 * Handle a media change request on the underlying interface.
1167 ieee80211com_media_change(struct ifnet *ifp)
1173 * Handle a media change request on the vap interface.
1176 ieee80211_media_change(struct ifnet *ifp)
1178 struct ieee80211vap *vap = ifp->if_softc;
1179 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1182 if (!media2mode(ime, vap->iv_flags, &newmode))
1184 if (vap->iv_des_mode != newmode) {
1185 vap->iv_des_mode = newmode;
1192 * Common code to calculate the media status word
1193 * from the operating mode and channel state.
1196 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1200 status = IFM_IEEE80211;
1202 case IEEE80211_M_STA:
1204 case IEEE80211_M_IBSS:
1205 status |= IFM_IEEE80211_ADHOC;
1207 case IEEE80211_M_HOSTAP:
1208 status |= IFM_IEEE80211_HOSTAP;
1210 case IEEE80211_M_MONITOR:
1211 status |= IFM_IEEE80211_MONITOR;
1213 case IEEE80211_M_AHDEMO:
1214 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1216 case IEEE80211_M_WDS:
1217 status |= IFM_IEEE80211_WDS;
1220 if (IEEE80211_IS_CHAN_HTA(chan)) {
1221 status |= IFM_IEEE80211_11NA;
1222 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1223 status |= IFM_IEEE80211_11NG;
1224 } else if (IEEE80211_IS_CHAN_A(chan)) {
1225 status |= IFM_IEEE80211_11A;
1226 } else if (IEEE80211_IS_CHAN_B(chan)) {
1227 status |= IFM_IEEE80211_11B;
1228 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1229 status |= IFM_IEEE80211_11G;
1230 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1231 status |= IFM_IEEE80211_FH;
1233 /* XXX else complain? */
1235 if (IEEE80211_IS_CHAN_TURBO(chan))
1236 status |= IFM_IEEE80211_TURBO;
1238 if (IEEE80211_IS_CHAN_HT20(chan))
1239 status |= IFM_IEEE80211_HT20;
1240 if (IEEE80211_IS_CHAN_HT40(chan))
1241 status |= IFM_IEEE80211_HT40;
1247 ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1249 struct ieee80211com *ic = ifp->if_l2com;
1250 struct ieee80211vap *vap;
1252 imr->ifm_status = IFM_AVALID;
1253 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1254 if (vap->iv_ifp->if_flags & IFF_UP) {
1255 imr->ifm_status |= IFM_ACTIVE;
1258 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1259 if (imr->ifm_status & IFM_ACTIVE)
1260 imr->ifm_current = imr->ifm_active;
1264 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1266 struct ieee80211vap *vap = ifp->if_softc;
1267 struct ieee80211com *ic = vap->iv_ic;
1268 enum ieee80211_phymode mode;
1270 imr->ifm_status = IFM_AVALID;
1272 * NB: use the current channel's mode to lock down a xmit
1273 * rate only when running; otherwise we may have a mismatch
1274 * in which case the rate will not be convertible.
1276 if (vap->iv_state == IEEE80211_S_RUN) {
1277 imr->ifm_status |= IFM_ACTIVE;
1278 mode = ieee80211_chan2mode(ic->ic_curchan);
1280 mode = IEEE80211_MODE_AUTO;
1281 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1283 * Calculate a current rate if possible.
1285 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1287 * A fixed rate is set, report that.
1289 imr->ifm_active |= ieee80211_rate2media(ic,
1290 vap->iv_txparms[mode].ucastrate, mode);
1291 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1293 * In station mode report the current transmit rate.
1295 imr->ifm_active |= ieee80211_rate2media(ic,
1296 vap->iv_bss->ni_txrate, mode);
1298 imr->ifm_active |= IFM_AUTO;
1299 if (imr->ifm_status & IFM_ACTIVE)
1300 imr->ifm_current = imr->ifm_active;
1304 * Set the current phy mode and recalculate the active channel
1305 * set based on the available channels for this mode. Also
1306 * select a new default/current channel if the current one is
1307 * inappropriate for this mode.
1310 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1313 * Adjust basic rates in 11b/11g supported rate set.
1314 * Note that if operating on a hal/quarter rate channel
1315 * this is a noop as those rates sets are different
1318 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1319 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1321 ic->ic_curmode = mode;
1322 ieee80211_reset_erp(ic); /* reset ERP state */
1328 * Return the phy mode for with the specified channel.
1330 enum ieee80211_phymode
1331 ieee80211_chan2mode(const struct ieee80211_channel *chan)
1334 if (IEEE80211_IS_CHAN_HTA(chan))
1335 return IEEE80211_MODE_11NA;
1336 else if (IEEE80211_IS_CHAN_HTG(chan))
1337 return IEEE80211_MODE_11NG;
1338 else if (IEEE80211_IS_CHAN_108G(chan))
1339 return IEEE80211_MODE_TURBO_G;
1340 else if (IEEE80211_IS_CHAN_ST(chan))
1341 return IEEE80211_MODE_STURBO_A;
1342 else if (IEEE80211_IS_CHAN_TURBO(chan))
1343 return IEEE80211_MODE_TURBO_A;
1344 else if (IEEE80211_IS_CHAN_HALF(chan))
1345 return IEEE80211_MODE_HALF;
1346 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1347 return IEEE80211_MODE_QUARTER;
1348 else if (IEEE80211_IS_CHAN_A(chan))
1349 return IEEE80211_MODE_11A;
1350 else if (IEEE80211_IS_CHAN_ANYG(chan))
1351 return IEEE80211_MODE_11G;
1352 else if (IEEE80211_IS_CHAN_B(chan))
1353 return IEEE80211_MODE_11B;
1354 else if (IEEE80211_IS_CHAN_FHSS(chan))
1355 return IEEE80211_MODE_FH;
1357 /* NB: should not get here */
1358 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1359 __func__, chan->ic_freq, chan->ic_flags);
1360 return IEEE80211_MODE_11B;
1364 u_int match; /* rate + mode */
1365 u_int media; /* if_media rate */
1369 findmedia(const struct ratemedia rates[], int n, u_int match)
1373 for (i = 0; i < n; i++)
1374 if (rates[i].match == match)
1375 return rates[i].media;
1380 * Convert IEEE80211 rate value to ifmedia subtype.
1381 * Rate is either a legacy rate in units of 0.5Mbps
1385 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1387 #define N(a) (sizeof(a) / sizeof(a[0]))
1388 static const struct ratemedia rates[] = {
1389 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1390 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1391 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1392 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1393 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1394 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1395 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1396 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1397 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1398 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1399 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1400 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1401 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1402 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1403 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1404 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1405 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1406 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1407 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1408 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1409 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1410 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1411 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1412 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1413 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1414 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1415 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1416 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1417 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1418 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1419 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1421 static const struct ratemedia htrates[] = {
1422 { 0, IFM_IEEE80211_MCS },
1423 { 1, IFM_IEEE80211_MCS },
1424 { 2, IFM_IEEE80211_MCS },
1425 { 3, IFM_IEEE80211_MCS },
1426 { 4, IFM_IEEE80211_MCS },
1427 { 5, IFM_IEEE80211_MCS },
1428 { 6, IFM_IEEE80211_MCS },
1429 { 7, IFM_IEEE80211_MCS },
1430 { 8, IFM_IEEE80211_MCS },
1431 { 9, IFM_IEEE80211_MCS },
1432 { 10, IFM_IEEE80211_MCS },
1433 { 11, IFM_IEEE80211_MCS },
1434 { 12, IFM_IEEE80211_MCS },
1435 { 13, IFM_IEEE80211_MCS },
1436 { 14, IFM_IEEE80211_MCS },
1437 { 15, IFM_IEEE80211_MCS },
1442 * Check 11n rates first for match as an MCS.
1444 if (mode == IEEE80211_MODE_11NA) {
1445 if (rate & IEEE80211_RATE_MCS) {
1446 rate &= ~IEEE80211_RATE_MCS;
1447 m = findmedia(htrates, N(htrates), rate);
1449 return m | IFM_IEEE80211_11NA;
1451 } else if (mode == IEEE80211_MODE_11NG) {
1452 /* NB: 12 is ambiguous, it will be treated as an MCS */
1453 if (rate & IEEE80211_RATE_MCS) {
1454 rate &= ~IEEE80211_RATE_MCS;
1455 m = findmedia(htrates, N(htrates), rate);
1457 return m | IFM_IEEE80211_11NG;
1460 rate &= IEEE80211_RATE_VAL;
1462 case IEEE80211_MODE_11A:
1463 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1464 case IEEE80211_MODE_QUARTER:
1465 case IEEE80211_MODE_11NA:
1466 case IEEE80211_MODE_TURBO_A:
1467 case IEEE80211_MODE_STURBO_A:
1468 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A);
1469 case IEEE80211_MODE_11B:
1470 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B);
1471 case IEEE80211_MODE_FH:
1472 return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH);
1473 case IEEE80211_MODE_AUTO:
1474 /* NB: ic may be NULL for some drivers */
1475 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1476 return findmedia(rates, N(rates),
1477 rate | IFM_IEEE80211_FH);
1478 /* NB: hack, 11g matches both 11b+11a rates */
1480 case IEEE80211_MODE_11G:
1481 case IEEE80211_MODE_11NG:
1482 case IEEE80211_MODE_TURBO_G:
1483 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G);
1490 ieee80211_media2rate(int mword)
1492 #define N(a) (sizeof(a) / sizeof(a[0]))
1493 static const int ieeerates[] = {
1497 2, /* IFM_IEEE80211_FH1 */
1498 4, /* IFM_IEEE80211_FH2 */
1499 2, /* IFM_IEEE80211_DS1 */
1500 4, /* IFM_IEEE80211_DS2 */
1501 11, /* IFM_IEEE80211_DS5 */
1502 22, /* IFM_IEEE80211_DS11 */
1503 44, /* IFM_IEEE80211_DS22 */
1504 12, /* IFM_IEEE80211_OFDM6 */
1505 18, /* IFM_IEEE80211_OFDM9 */
1506 24, /* IFM_IEEE80211_OFDM12 */
1507 36, /* IFM_IEEE80211_OFDM18 */
1508 48, /* IFM_IEEE80211_OFDM24 */
1509 72, /* IFM_IEEE80211_OFDM36 */
1510 96, /* IFM_IEEE80211_OFDM48 */
1511 108, /* IFM_IEEE80211_OFDM54 */
1512 144, /* IFM_IEEE80211_OFDM72 */
1513 0, /* IFM_IEEE80211_DS354k */
1514 0, /* IFM_IEEE80211_DS512k */
1515 6, /* IFM_IEEE80211_OFDM3 */
1516 9, /* IFM_IEEE80211_OFDM4 */
1517 54, /* IFM_IEEE80211_OFDM27 */
1518 -1, /* IFM_IEEE80211_MCS */
1520 return IFM_SUBTYPE(mword) < N(ieeerates) ?
1521 ieeerates[IFM_SUBTYPE(mword)] : 0;