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>
52 const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
53 [IEEE80211_MODE_AUTO] = "auto",
54 [IEEE80211_MODE_11A] = "11a",
55 [IEEE80211_MODE_11B] = "11b",
56 [IEEE80211_MODE_11G] = "11g",
57 [IEEE80211_MODE_FH] = "FH",
58 [IEEE80211_MODE_TURBO_A] = "turboA",
59 [IEEE80211_MODE_TURBO_G] = "turboG",
60 [IEEE80211_MODE_STURBO_A] = "sturboA",
61 [IEEE80211_MODE_HALF] = "half",
62 [IEEE80211_MODE_QUARTER] = "quarter",
63 [IEEE80211_MODE_11NA] = "11na",
64 [IEEE80211_MODE_11NG] = "11ng",
66 /* map ieee80211_opmode to the corresponding capability bit */
67 const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
68 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
69 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
70 [IEEE80211_M_STA] = IEEE80211_C_STA,
71 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
72 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
73 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
76 static const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
77 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
79 static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
80 static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
81 static int ieee80211_media_setup(struct ieee80211com *ic,
82 struct ifmedia *media, int caps, int addsta,
83 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
84 static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
85 static int ieee80211com_media_change(struct ifnet *);
86 static int media_status(enum ieee80211_opmode,
87 const struct ieee80211_channel *);
89 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
92 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
94 #define B(r) ((r) | IEEE80211_RATE_BASIC)
95 static const struct ieee80211_rateset ieee80211_rateset_11a =
96 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
97 static const struct ieee80211_rateset ieee80211_rateset_half =
98 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
99 static const struct ieee80211_rateset ieee80211_rateset_quarter =
100 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
101 static const struct ieee80211_rateset ieee80211_rateset_11b =
102 { 4, { B(2), B(4), B(11), B(22) } };
103 /* NB: OFDM rates are handled specially based on mode */
104 static const struct ieee80211_rateset ieee80211_rateset_11g =
105 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
109 * Fill in 802.11 available channel set, mark
110 * all available channels as active, and pick
111 * a default channel if not already specified.
114 ieee80211_chan_init(struct ieee80211com *ic)
116 #define DEFAULTRATES(m, def) do { \
117 if (ic->ic_sup_rates[m].rs_nrates == 0) \
118 ic->ic_sup_rates[m] = def; \
120 struct ieee80211_channel *c;
123 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
124 ("invalid number of channels specified: %u", ic->ic_nchans));
125 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
126 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
127 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
128 for (i = 0; i < ic->ic_nchans; i++) {
129 c = &ic->ic_channels[i];
130 KASSERT(c->ic_flags != 0, ("channel with no flags"));
132 * Help drivers that work only with frequencies by filling
133 * in IEEE channel #'s if not already calculated. Note this
134 * mimics similar work done in ieee80211_setregdomain when
135 * changing regulatory state.
138 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
139 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
140 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
141 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
143 /* default max tx power to max regulatory */
144 if (c->ic_maxpower == 0)
145 c->ic_maxpower = 2*c->ic_maxregpower;
146 setbit(ic->ic_chan_avail, c->ic_ieee);
148 * Identify mode capabilities.
150 if (IEEE80211_IS_CHAN_A(c))
151 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
152 if (IEEE80211_IS_CHAN_B(c))
153 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
154 if (IEEE80211_IS_CHAN_ANYG(c))
155 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
156 if (IEEE80211_IS_CHAN_FHSS(c))
157 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
158 if (IEEE80211_IS_CHAN_108A(c))
159 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
160 if (IEEE80211_IS_CHAN_108G(c))
161 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
162 if (IEEE80211_IS_CHAN_ST(c))
163 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
164 if (IEEE80211_IS_CHAN_HALF(c))
165 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
166 if (IEEE80211_IS_CHAN_QUARTER(c))
167 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
168 if (IEEE80211_IS_CHAN_HTA(c))
169 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
170 if (IEEE80211_IS_CHAN_HTG(c))
171 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
173 /* initialize candidate channels to all available */
174 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
175 sizeof(ic->ic_chan_avail));
177 /* sort channel table to allow lookup optimizations */
178 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
180 /* invalidate any previous state */
181 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
182 ic->ic_prevchan = NULL;
183 ic->ic_csa_newchan = NULL;
184 /* arbitrarily pick the first channel */
185 ic->ic_curchan = &ic->ic_channels[0];
187 /* fillin well-known rate sets if driver has not specified */
188 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
189 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
190 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
191 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
192 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
193 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
194 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
195 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
196 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
197 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
200 * Set auto mode to reset active channel state and any desired channel.
202 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
207 null_update_mcast(struct ifnet *ifp)
209 if_printf(ifp, "need multicast update callback\n");
213 null_update_promisc(struct ifnet *ifp)
215 if_printf(ifp, "need promiscuous mode update callback\n");
219 null_output(struct ifnet *ifp, struct mbuf *m,
220 struct sockaddr *dst, struct rtentry *rt0)
222 if_printf(ifp, "discard raw packet\n");
228 null_input(struct ifnet *ifp, struct mbuf *m)
230 if_printf(ifp, "if_input should not be called\n");
235 * Attach/setup the common net80211 state. Called by
236 * the driver on attach to prior to creating any vap's.
239 ieee80211_ifattach(struct ieee80211com *ic)
241 struct ifnet *ifp = ic->ic_ifp;
242 struct sockaddr_dl *sdl;
245 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
247 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
248 TAILQ_INIT(&ic->ic_vaps);
250 * Fill in 802.11 available channel set, mark all
251 * available channels as active, and pick a default
252 * channel if not already specified.
254 ieee80211_media_init(ic);
256 ic->ic_update_mcast = null_update_mcast;
257 ic->ic_update_promisc = null_update_promisc;
259 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
260 ic->ic_lintval = ic->ic_bintval;
261 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
263 ieee80211_crypto_attach(ic);
264 ieee80211_node_attach(ic);
265 ieee80211_power_attach(ic);
266 ieee80211_proto_attach(ic);
267 ieee80211_ht_attach(ic);
268 ieee80211_scan_attach(ic);
269 ieee80211_regdomain_attach(ic);
271 ieee80211_sysctl_attach(ic);
273 ifp->if_addrlen = IEEE80211_ADDR_LEN;
276 ifp->if_mtu = IEEE80211_MTU_MAX;
277 ifp->if_broadcastaddr = ieee80211broadcastaddr;
278 ifp->if_output = null_output;
279 ifp->if_input = null_input; /* just in case */
280 ifp->if_resolvemulti = NULL; /* NB: callers check */
282 ifa = ifaddr_byindex(ifp->if_index);
283 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
284 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
285 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
286 sdl->sdl_alen = IEEE80211_ADDR_LEN;
287 IEEE80211_ADDR_COPY(LLADDR(sdl), ic->ic_myaddr);
291 * Detach net80211 state on device detach. Tear down
292 * all vap's and reclaim all common state prior to the
293 * device state going away. Note we may call back into
294 * driver; it must be prepared for this.
297 ieee80211_ifdetach(struct ieee80211com *ic)
299 struct ifnet *ifp = ic->ic_ifp;
300 struct ieee80211vap *vap;
302 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
303 ieee80211_vap_destroy(vap);
304 ieee80211_waitfor_parent(ic);
306 ieee80211_sysctl_detach(ic);
307 ieee80211_regdomain_detach(ic);
308 ieee80211_scan_detach(ic);
309 ieee80211_ht_detach(ic);
310 /* NB: must be called before ieee80211_node_detach */
311 ieee80211_proto_detach(ic);
312 ieee80211_crypto_detach(ic);
313 ieee80211_power_detach(ic);
314 ieee80211_node_detach(ic);
315 ifmedia_removeall(&ic->ic_media);
317 IEEE80211_LOCK_DESTROY(ic);
322 * Default reset method for use with the ioctl support. This
323 * method is invoked after any state change in the 802.11
324 * layer that should be propagated to the hardware but not
325 * require re-initialization of the 802.11 state machine (e.g
326 * rescanning for an ap). We always return ENETRESET which
327 * should cause the driver to re-initialize the device. Drivers
328 * can override this method to implement more optimized support.
331 default_reset(struct ieee80211vap *vap, u_long cmd)
337 * Prepare a vap for use. Drivers use this call to
338 * setup net80211 state in new vap's prior attaching
339 * them with ieee80211_vap_attach (below).
342 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
343 const char name[IFNAMSIZ], int unit, int opmode, int flags,
344 const uint8_t bssid[IEEE80211_ADDR_LEN],
345 const uint8_t macaddr[IEEE80211_ADDR_LEN])
349 ifp = if_alloc(IFT_ETHER);
351 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
355 if_initname(ifp, name, unit);
356 ifp->if_softc = vap; /* back pointer */
357 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
358 ifp->if_start = ieee80211_start;
359 ifp->if_ioctl = ieee80211_ioctl;
360 ifp->if_watchdog = NULL; /* NB: no watchdog routine */
361 ifp->if_init = ieee80211_init;
362 /* NB: input+output filled in by ether_ifattach */
363 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
364 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
365 IFQ_SET_READY(&ifp->if_snd);
369 vap->iv_flags = ic->ic_flags; /* propagate common flags */
370 vap->iv_flags_ext = ic->ic_flags_ext;
371 vap->iv_flags_ven = ic->ic_flags_ven;
372 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
373 vap->iv_htcaps = ic->ic_htcaps;
374 vap->iv_opmode = opmode;
375 vap->iv_caps |= ieee80211_opcap[opmode];
377 case IEEE80211_M_WDS:
379 * WDS links must specify the bssid of the far end.
380 * For legacy operation this is a static relationship.
381 * For non-legacy operation the station must associate
382 * and be authorized to pass traffic. Plumbing the
383 * vap to the proper node happens when the vap
384 * transitions to RUN state.
386 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
387 vap->iv_flags |= IEEE80211_F_DESBSSID;
388 if (flags & IEEE80211_CLONE_WDSLEGACY)
389 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
391 #ifdef IEEE80211_SUPPORT_TDMA
392 case IEEE80211_M_AHDEMO:
393 if (flags & IEEE80211_CLONE_TDMA) {
394 /* NB: checked before clone operation allowed */
395 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
396 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
398 * Propagate TDMA capability to mark vap; this
399 * cannot be removed and is used to distinguish
400 * regular ahdemo operation from ahdemo+tdma.
402 vap->iv_caps |= IEEE80211_C_TDMA;
407 /* auto-enable s/w beacon miss support */
408 if (flags & IEEE80211_CLONE_NOBEACONS)
409 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
411 * Enable various functionality by default if we're
412 * capable; the driver can override us if it knows better.
414 if (vap->iv_caps & IEEE80211_C_WME)
415 vap->iv_flags |= IEEE80211_F_WME;
416 if (vap->iv_caps & IEEE80211_C_BURST)
417 vap->iv_flags |= IEEE80211_F_BURST;
418 if (vap->iv_caps & IEEE80211_C_FF)
419 vap->iv_flags |= IEEE80211_F_FF;
420 if (vap->iv_caps & IEEE80211_C_TURBOP)
421 vap->iv_flags |= IEEE80211_F_TURBOP;
422 /* NB: bg scanning only makes sense for station mode right now */
423 if (vap->iv_opmode == IEEE80211_M_STA &&
424 (vap->iv_caps & IEEE80211_C_BGSCAN))
425 vap->iv_flags |= IEEE80211_F_BGSCAN;
426 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
427 /* NB: DFS support only makes sense for ap mode right now */
428 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
429 (vap->iv_caps & IEEE80211_C_DFS))
430 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
432 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
433 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
434 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
436 * Install a default reset method for the ioctl support;
437 * the driver can override this.
439 vap->iv_reset = default_reset;
441 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
443 ieee80211_sysctl_vattach(vap);
444 ieee80211_crypto_vattach(vap);
445 ieee80211_node_vattach(vap);
446 ieee80211_power_vattach(vap);
447 ieee80211_proto_vattach(vap);
448 ieee80211_ht_vattach(vap);
449 ieee80211_scan_vattach(vap);
450 ieee80211_regdomain_vattach(vap);
456 * Activate a vap. State should have been prepared with a
457 * call to ieee80211_vap_setup and by the driver. On return
458 * from this call the vap is ready for use.
461 ieee80211_vap_attach(struct ieee80211vap *vap,
462 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
464 struct ifnet *ifp = vap->iv_ifp;
465 struct ieee80211com *ic = vap->iv_ic;
466 struct ifmediareq imr;
469 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
470 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
471 __func__, ieee80211_opmode_name[vap->iv_opmode],
472 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
475 * Do late attach work that cannot happen until after
476 * the driver has had a chance to override defaults.
478 ieee80211_node_latevattach(vap);
479 ieee80211_power_latevattach(vap);
481 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
482 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
483 ieee80211_media_status(ifp, &imr);
484 /* NB: strip explicit mode; we're actually in autoselect */
485 ifmedia_set(&vap->iv_media,
486 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
488 ifp->if_baudrate = IF_Mbps(maxrate);
490 ether_ifattach(ifp, vap->iv_myaddr);
491 /* hook output method setup by ether_ifattach */
492 vap->iv_output = ifp->if_output;
493 ifp->if_output = ieee80211_output;
494 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
495 bpfattach2(ifp, DLT_IEEE802_11, ifp->if_hdrlen, &vap->iv_rawbpf);
498 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
499 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
500 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
501 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
502 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
503 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_HT);
504 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_USEHT40);
505 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
506 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
507 IEEE80211_UNLOCK(ic);
513 * Tear down vap state and reclaim the ifnet.
514 * The driver is assumed to have prepared for
515 * this; e.g. by turning off interrupts for the
519 ieee80211_vap_detach(struct ieee80211vap *vap)
521 struct ieee80211com *ic = vap->iv_ic;
522 struct ifnet *ifp = vap->iv_ifp;
524 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
525 __func__, ieee80211_opmode_name[vap->iv_opmode],
526 ic->ic_ifp->if_xname);
529 /* block traffic from above */
530 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
532 * Evil hack. Clear the backpointer from the ifnet to the
533 * vap so any requests from above will return an error or
534 * be ignored. In particular this short-circuits requests
535 * by the bridge to turn off promiscuous mode as a result
536 * of calling ether_ifdetach.
538 ifp->if_softc = NULL;
540 * Stop the vap before detaching the ifnet. Ideally we'd
541 * do this in the other order so the ifnet is inaccessible
542 * while we cleanup internal state but that is hard.
544 ieee80211_stop_locked(vap);
546 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
547 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
548 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
549 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
550 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
551 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_HT);
552 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_USEHT40);
553 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
554 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
555 IEEE80211_UNLOCK(ic);
557 /* XXX can't hold com lock */
558 /* NB: bpfattach is called by ether_ifdetach and claims all taps */
561 ifmedia_removeall(&vap->iv_media);
563 ieee80211_regdomain_vdetach(vap);
564 ieee80211_scan_vdetach(vap);
565 ieee80211_ht_vdetach(vap);
566 /* NB: must be before ieee80211_node_vdetach */
567 ieee80211_proto_vdetach(vap);
568 ieee80211_crypto_vdetach(vap);
569 ieee80211_power_vdetach(vap);
570 ieee80211_node_vdetach(vap);
571 ieee80211_sysctl_vdetach(vap);
577 * Synchronize flag bit state in the parent ifnet structure
578 * according to the state of all vap ifnet's. This is used,
579 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
582 ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
584 struct ifnet *ifp = ic->ic_ifp;
585 struct ieee80211vap *vap;
588 IEEE80211_LOCK_ASSERT(ic);
591 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
592 if (vap->iv_ifp->if_flags & flag) {
594 * XXX the bridge sets PROMISC but we don't want to
595 * enable it on the device, discard here so all the
596 * drivers don't need to special-case it
598 if (flag == IFF_PROMISC &&
599 vap->iv_opmode == IEEE80211_M_HOSTAP)
604 oflags = ifp->if_flags;
606 ifp->if_flags |= flag;
608 ifp->if_flags &= ~flag;
609 if ((ifp->if_flags ^ oflags) & flag) {
610 /* XXX should we return 1/0 and let caller do this? */
611 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
612 if (flag == IFF_PROMISC)
613 ic->ic_update_promisc(ifp);
614 else if (flag == IFF_ALLMULTI)
615 ic->ic_update_mcast(ifp);
621 * Synchronize flag bit state in the com structure
622 * according to the state of all vap's. This is used,
623 * for example, to handle state changes via ioctls.
626 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
628 struct ieee80211vap *vap;
631 IEEE80211_LOCK_ASSERT(ic);
634 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
635 if (vap->iv_flags & flag) {
640 ic->ic_flags |= flag;
642 ic->ic_flags &= ~flag;
646 ieee80211_syncflag(struct ieee80211vap *vap, int flag)
648 struct ieee80211com *ic = vap->iv_ic;
653 vap->iv_flags &= ~flag;
655 vap->iv_flags |= flag;
656 ieee80211_syncflag_locked(ic, flag);
657 IEEE80211_UNLOCK(ic);
661 * Synchronize flag bit state in the com structure
662 * according to the state of all vap's. This is used,
663 * for example, to handle state changes via ioctls.
666 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
668 struct ieee80211vap *vap;
671 IEEE80211_LOCK_ASSERT(ic);
674 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
675 if (vap->iv_flags_ext & flag) {
680 ic->ic_flags_ext |= flag;
682 ic->ic_flags_ext &= ~flag;
686 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
688 struct ieee80211com *ic = vap->iv_ic;
693 vap->iv_flags_ext &= ~flag;
695 vap->iv_flags_ext |= flag;
696 ieee80211_syncflag_ext_locked(ic, flag);
697 IEEE80211_UNLOCK(ic);
701 mapgsm(u_int freq, u_int flags)
704 if (flags & IEEE80211_CHAN_QUARTER)
706 else if (flags & IEEE80211_CHAN_HALF)
710 /* NB: there is no 907/20 wide but leave room */
711 return (freq - 906*10) / 5;
715 mappsb(u_int freq, u_int flags)
717 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
721 * Convert MHz frequency to IEEE channel number.
724 ieee80211_mhz2ieee(u_int freq, u_int flags)
726 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
727 if (flags & IEEE80211_CHAN_GSM)
728 return mapgsm(freq, flags);
729 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
733 return ((int) freq - 2407) / 5;
735 return 15 + ((freq - 2512) / 20);
736 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
738 /* XXX check regdomain? */
739 if (IS_FREQ_IN_PSB(freq))
740 return mappsb(freq, flags);
741 return (freq - 4000) / 5;
743 return (freq - 5000) / 5;
744 } else { /* either, guess */
748 if (907 <= freq && freq <= 922)
749 return mapgsm(freq, flags);
750 return ((int) freq - 2407) / 5;
753 if (IS_FREQ_IN_PSB(freq))
754 return mappsb(freq, flags);
755 else if (freq > 4900)
756 return (freq - 4000) / 5;
758 return 15 + ((freq - 2512) / 20);
760 return (freq - 5000) / 5;
762 #undef IS_FREQ_IN_PSB
766 * Convert channel to IEEE channel number.
769 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
772 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
775 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
779 * Convert IEEE channel number to MHz frequency.
782 ieee80211_ieee2mhz(u_int chan, u_int flags)
784 if (flags & IEEE80211_CHAN_GSM)
785 return 907 + 5 * (chan / 10);
786 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
790 return 2407 + chan*5;
792 return 2512 + ((chan-15)*20);
793 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
794 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
796 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
798 return 5000 + (chan*5);
799 } else { /* either, guess */
800 /* XXX can't distinguish PSB+GSM channels */
803 if (chan < 14) /* 0-13 */
804 return 2407 + chan*5;
805 if (chan < 27) /* 15-26 */
806 return 2512 + ((chan-15)*20);
807 return 5000 + (chan*5);
812 * Locate a channel given a frequency+flags. We cache
813 * the previous lookup to optimize switching between two
814 * channels--as happens with dynamic turbo.
816 struct ieee80211_channel *
817 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
819 struct ieee80211_channel *c;
822 flags &= IEEE80211_CHAN_ALLTURBO;
824 if (c != NULL && c->ic_freq == freq &&
825 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
827 /* brute force search */
828 for (i = 0; i < ic->ic_nchans; i++) {
829 c = &ic->ic_channels[i];
830 if (c->ic_freq == freq &&
831 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
838 * Locate a channel given a channel number+flags. We cache
839 * the previous lookup to optimize switching between two
840 * channels--as happens with dynamic turbo.
842 struct ieee80211_channel *
843 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
845 struct ieee80211_channel *c;
848 flags &= IEEE80211_CHAN_ALLTURBO;
850 if (c != NULL && c->ic_ieee == ieee &&
851 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
853 /* brute force search */
854 for (i = 0; i < ic->ic_nchans; i++) {
855 c = &ic->ic_channels[i];
856 if (c->ic_ieee == ieee &&
857 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
864 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
866 #define ADD(_ic, _s, _o) \
868 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
869 static const u_int mopts[IEEE80211_MODE_MAX] = {
870 [IEEE80211_MODE_AUTO] = IFM_AUTO,
871 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
872 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
873 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
874 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
875 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
876 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
877 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
878 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
879 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
880 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
881 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
887 ADD(ic, mword, mopt); /* STA mode has no cap */
888 if (caps & IEEE80211_C_IBSS)
889 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
890 if (caps & IEEE80211_C_HOSTAP)
891 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
892 if (caps & IEEE80211_C_AHDEMO)
893 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
894 if (caps & IEEE80211_C_MONITOR)
895 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
896 if (caps & IEEE80211_C_WDS)
897 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
902 * Setup the media data structures according to the channel and
906 ieee80211_media_setup(struct ieee80211com *ic,
907 struct ifmedia *media, int caps, int addsta,
908 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
910 int i, j, mode, rate, maxrate, mword, r;
911 const struct ieee80211_rateset *rs;
912 struct ieee80211_rateset allrates;
915 * Fill in media characteristics.
917 ifmedia_init(media, 0, media_change, media_stat);
920 * Add media for legacy operating modes.
922 memset(&allrates, 0, sizeof(allrates));
923 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
924 if (isclr(ic->ic_modecaps, mode))
926 addmedia(media, caps, addsta, mode, IFM_AUTO);
927 if (mode == IEEE80211_MODE_AUTO)
929 rs = &ic->ic_sup_rates[mode];
930 for (i = 0; i < rs->rs_nrates; i++) {
931 rate = rs->rs_rates[i];
932 mword = ieee80211_rate2media(ic, rate, mode);
935 addmedia(media, caps, addsta, mode, mword);
937 * Add legacy rate to the collection of all rates.
939 r = rate & IEEE80211_RATE_VAL;
940 for (j = 0; j < allrates.rs_nrates; j++)
941 if (allrates.rs_rates[j] == r)
943 if (j == allrates.rs_nrates) {
944 /* unique, add to the set */
945 allrates.rs_rates[j] = r;
946 allrates.rs_nrates++;
948 rate = (rate & IEEE80211_RATE_VAL) / 2;
953 for (i = 0; i < allrates.rs_nrates; i++) {
954 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
955 IEEE80211_MODE_AUTO);
958 /* NB: remove media options from mword */
959 addmedia(media, caps, addsta,
960 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
963 * Add HT/11n media. Note that we do not have enough
964 * bits in the media subtype to express the MCS so we
965 * use a "placeholder" media subtype and any fixed MCS
966 * must be specified with a different mechanism.
968 for (; mode <= IEEE80211_MODE_11NG; mode++) {
969 if (isclr(ic->ic_modecaps, mode))
971 addmedia(media, caps, addsta, mode, IFM_AUTO);
972 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
974 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
975 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
976 addmedia(media, caps, addsta,
977 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
978 /* XXX could walk htrates */
979 /* XXX known array size */
980 if (ieee80211_htrates[15].ht40_rate_400ns > maxrate)
981 maxrate = ieee80211_htrates[15].ht40_rate_400ns;
987 ieee80211_media_init(struct ieee80211com *ic)
989 struct ifnet *ifp = ic->ic_ifp;
992 /* NB: this works because the structure is initialized to zero */
993 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
995 * We are re-initializing the channel list; clear
996 * the existing media state as the media routines
997 * don't suppress duplicates.
999 ifmedia_removeall(&ic->ic_media);
1001 ieee80211_chan_init(ic);
1004 * Recalculate media settings in case new channel list changes
1005 * the set of available modes.
1007 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1008 ieee80211com_media_change, ieee80211com_media_status);
1009 /* NB: strip explicit mode; we're actually in autoselect */
1010 ifmedia_set(&ic->ic_media,
1011 media_status(ic->ic_opmode, ic->ic_curchan) &~
1012 (IFM_MMASK | IFM_IEEE80211_TURBO));
1014 ifp->if_baudrate = IF_Mbps(maxrate);
1016 /* XXX need to propagate new media settings to vap's */
1019 /* XXX inline or eliminate? */
1020 const struct ieee80211_rateset *
1021 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1023 /* XXX does this work for 11ng basic rates? */
1024 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1028 ieee80211_announce(struct ieee80211com *ic)
1030 struct ifnet *ifp = ic->ic_ifp;
1031 int i, mode, rate, mword;
1032 const struct ieee80211_rateset *rs;
1034 /* NB: skip AUTO since it has no rates */
1035 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1036 if (isclr(ic->ic_modecaps, mode))
1038 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1039 rs = &ic->ic_sup_rates[mode];
1040 for (i = 0; i < rs->rs_nrates; i++) {
1041 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1044 rate = ieee80211_media2rate(mword);
1045 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1046 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1050 ieee80211_ht_announce(ic);
1054 ieee80211_announce_channels(struct ieee80211com *ic)
1056 const struct ieee80211_channel *c;
1060 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1061 for (i = 0; i < ic->ic_nchans; i++) {
1062 c = &ic->ic_channels[i];
1063 if (IEEE80211_IS_CHAN_ST(c))
1065 else if (IEEE80211_IS_CHAN_108A(c))
1067 else if (IEEE80211_IS_CHAN_108G(c))
1069 else if (IEEE80211_IS_CHAN_HT(c))
1071 else if (IEEE80211_IS_CHAN_A(c))
1073 else if (IEEE80211_IS_CHAN_ANYG(c))
1075 else if (IEEE80211_IS_CHAN_B(c))
1079 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1081 else if (IEEE80211_IS_CHAN_HALF(c))
1083 else if (IEEE80211_IS_CHAN_QUARTER(c))
1087 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1088 , c->ic_ieee, c->ic_freq, type
1090 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1091 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1093 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1094 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1100 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1102 switch (IFM_MODE(ime->ifm_media)) {
1103 case IFM_IEEE80211_11A:
1104 *mode = IEEE80211_MODE_11A;
1106 case IFM_IEEE80211_11B:
1107 *mode = IEEE80211_MODE_11B;
1109 case IFM_IEEE80211_11G:
1110 *mode = IEEE80211_MODE_11G;
1112 case IFM_IEEE80211_FH:
1113 *mode = IEEE80211_MODE_FH;
1115 case IFM_IEEE80211_11NA:
1116 *mode = IEEE80211_MODE_11NA;
1118 case IFM_IEEE80211_11NG:
1119 *mode = IEEE80211_MODE_11NG;
1122 *mode = IEEE80211_MODE_AUTO;
1128 * Turbo mode is an ``option''.
1129 * XXX does not apply to AUTO
1131 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1132 if (*mode == IEEE80211_MODE_11A) {
1133 if (flags & IEEE80211_F_TURBOP)
1134 *mode = IEEE80211_MODE_TURBO_A;
1136 *mode = IEEE80211_MODE_STURBO_A;
1137 } else if (*mode == IEEE80211_MODE_11G)
1138 *mode = IEEE80211_MODE_TURBO_G;
1147 * Handle a media change request on the underlying interface.
1150 ieee80211com_media_change(struct ifnet *ifp)
1156 * Handle a media change request on the vap interface.
1159 ieee80211_media_change(struct ifnet *ifp)
1161 struct ieee80211vap *vap = ifp->if_softc;
1162 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1165 if (!media2mode(ime, vap->iv_flags, &newmode))
1167 if (vap->iv_des_mode != newmode) {
1168 vap->iv_des_mode = newmode;
1175 * Common code to calculate the media status word
1176 * from the operating mode and channel state.
1179 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1183 status = IFM_IEEE80211;
1185 case IEEE80211_M_STA:
1187 case IEEE80211_M_IBSS:
1188 status |= IFM_IEEE80211_ADHOC;
1190 case IEEE80211_M_HOSTAP:
1191 status |= IFM_IEEE80211_HOSTAP;
1193 case IEEE80211_M_MONITOR:
1194 status |= IFM_IEEE80211_MONITOR;
1196 case IEEE80211_M_AHDEMO:
1197 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1199 case IEEE80211_M_WDS:
1200 status |= IFM_IEEE80211_WDS;
1203 if (IEEE80211_IS_CHAN_HTA(chan)) {
1204 status |= IFM_IEEE80211_11NA;
1205 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1206 status |= IFM_IEEE80211_11NG;
1207 } else if (IEEE80211_IS_CHAN_A(chan)) {
1208 status |= IFM_IEEE80211_11A;
1209 } else if (IEEE80211_IS_CHAN_B(chan)) {
1210 status |= IFM_IEEE80211_11B;
1211 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1212 status |= IFM_IEEE80211_11G;
1213 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1214 status |= IFM_IEEE80211_FH;
1216 /* XXX else complain? */
1218 if (IEEE80211_IS_CHAN_TURBO(chan))
1219 status |= IFM_IEEE80211_TURBO;
1221 if (IEEE80211_IS_CHAN_HT20(chan))
1222 status |= IFM_IEEE80211_HT20;
1223 if (IEEE80211_IS_CHAN_HT40(chan))
1224 status |= IFM_IEEE80211_HT40;
1230 ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1232 struct ieee80211com *ic = ifp->if_l2com;
1233 struct ieee80211vap *vap;
1235 imr->ifm_status = IFM_AVALID;
1236 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1237 if (vap->iv_ifp->if_flags & IFF_UP) {
1238 imr->ifm_status |= IFM_ACTIVE;
1241 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1242 if (imr->ifm_status & IFM_ACTIVE)
1243 imr->ifm_current = imr->ifm_active;
1247 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1249 struct ieee80211vap *vap = ifp->if_softc;
1250 struct ieee80211com *ic = vap->iv_ic;
1251 enum ieee80211_phymode mode;
1253 imr->ifm_status = IFM_AVALID;
1255 * NB: use the current channel's mode to lock down a xmit
1256 * rate only when running; otherwise we may have a mismatch
1257 * in which case the rate will not be convertible.
1259 if (vap->iv_state == IEEE80211_S_RUN) {
1260 imr->ifm_status |= IFM_ACTIVE;
1261 mode = ieee80211_chan2mode(ic->ic_curchan);
1263 mode = IEEE80211_MODE_AUTO;
1264 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1266 * Calculate a current rate if possible.
1268 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1270 * A fixed rate is set, report that.
1272 imr->ifm_active |= ieee80211_rate2media(ic,
1273 vap->iv_txparms[mode].ucastrate, mode);
1274 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1276 * In station mode report the current transmit rate.
1278 imr->ifm_active |= ieee80211_rate2media(ic,
1279 vap->iv_bss->ni_txrate, mode);
1281 imr->ifm_active |= IFM_AUTO;
1282 if (imr->ifm_status & IFM_ACTIVE)
1283 imr->ifm_current = imr->ifm_active;
1287 * Set the current phy mode and recalculate the active channel
1288 * set based on the available channels for this mode. Also
1289 * select a new default/current channel if the current one is
1290 * inappropriate for this mode.
1293 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1296 * Adjust basic rates in 11b/11g supported rate set.
1297 * Note that if operating on a hal/quarter rate channel
1298 * this is a noop as those rates sets are different
1301 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1302 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1304 ic->ic_curmode = mode;
1305 ieee80211_reset_erp(ic); /* reset ERP state */
1311 * Return the phy mode for with the specified channel.
1313 enum ieee80211_phymode
1314 ieee80211_chan2mode(const struct ieee80211_channel *chan)
1317 if (IEEE80211_IS_CHAN_HTA(chan))
1318 return IEEE80211_MODE_11NA;
1319 else if (IEEE80211_IS_CHAN_HTG(chan))
1320 return IEEE80211_MODE_11NG;
1321 else if (IEEE80211_IS_CHAN_108G(chan))
1322 return IEEE80211_MODE_TURBO_G;
1323 else if (IEEE80211_IS_CHAN_ST(chan))
1324 return IEEE80211_MODE_STURBO_A;
1325 else if (IEEE80211_IS_CHAN_TURBO(chan))
1326 return IEEE80211_MODE_TURBO_A;
1327 else if (IEEE80211_IS_CHAN_HALF(chan))
1328 return IEEE80211_MODE_HALF;
1329 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1330 return IEEE80211_MODE_QUARTER;
1331 else if (IEEE80211_IS_CHAN_A(chan))
1332 return IEEE80211_MODE_11A;
1333 else if (IEEE80211_IS_CHAN_ANYG(chan))
1334 return IEEE80211_MODE_11G;
1335 else if (IEEE80211_IS_CHAN_B(chan))
1336 return IEEE80211_MODE_11B;
1337 else if (IEEE80211_IS_CHAN_FHSS(chan))
1338 return IEEE80211_MODE_FH;
1340 /* NB: should not get here */
1341 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1342 __func__, chan->ic_freq, chan->ic_flags);
1343 return IEEE80211_MODE_11B;
1347 u_int match; /* rate + mode */
1348 u_int media; /* if_media rate */
1352 findmedia(const struct ratemedia rates[], int n, u_int match)
1356 for (i = 0; i < n; i++)
1357 if (rates[i].match == match)
1358 return rates[i].media;
1363 * Convert IEEE80211 rate value to ifmedia subtype.
1364 * Rate is either a legacy rate in units of 0.5Mbps
1368 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1370 #define N(a) (sizeof(a) / sizeof(a[0]))
1371 static const struct ratemedia rates[] = {
1372 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1373 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1374 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1375 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1376 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1377 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1378 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1379 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1380 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1381 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1382 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1383 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1384 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1385 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1386 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1387 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1388 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1389 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1390 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1391 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1392 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1393 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1394 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1395 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1396 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1397 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1398 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1399 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1400 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1401 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1402 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1404 static const struct ratemedia htrates[] = {
1405 { 0, IFM_IEEE80211_MCS },
1406 { 1, IFM_IEEE80211_MCS },
1407 { 2, IFM_IEEE80211_MCS },
1408 { 3, IFM_IEEE80211_MCS },
1409 { 4, IFM_IEEE80211_MCS },
1410 { 5, IFM_IEEE80211_MCS },
1411 { 6, IFM_IEEE80211_MCS },
1412 { 7, IFM_IEEE80211_MCS },
1413 { 8, IFM_IEEE80211_MCS },
1414 { 9, IFM_IEEE80211_MCS },
1415 { 10, IFM_IEEE80211_MCS },
1416 { 11, IFM_IEEE80211_MCS },
1417 { 12, IFM_IEEE80211_MCS },
1418 { 13, IFM_IEEE80211_MCS },
1419 { 14, IFM_IEEE80211_MCS },
1420 { 15, IFM_IEEE80211_MCS },
1425 * Check 11n rates first for match as an MCS.
1427 if (mode == IEEE80211_MODE_11NA) {
1428 if (rate & IEEE80211_RATE_MCS) {
1429 rate &= ~IEEE80211_RATE_MCS;
1430 m = findmedia(htrates, N(htrates), rate);
1432 return m | IFM_IEEE80211_11NA;
1434 } else if (mode == IEEE80211_MODE_11NG) {
1435 /* NB: 12 is ambiguous, it will be treated as an MCS */
1436 if (rate & IEEE80211_RATE_MCS) {
1437 rate &= ~IEEE80211_RATE_MCS;
1438 m = findmedia(htrates, N(htrates), rate);
1440 return m | IFM_IEEE80211_11NG;
1443 rate &= IEEE80211_RATE_VAL;
1445 case IEEE80211_MODE_11A:
1446 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1447 case IEEE80211_MODE_QUARTER:
1448 case IEEE80211_MODE_11NA:
1449 case IEEE80211_MODE_TURBO_A:
1450 case IEEE80211_MODE_STURBO_A:
1451 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11A);
1452 case IEEE80211_MODE_11B:
1453 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11B);
1454 case IEEE80211_MODE_FH:
1455 return findmedia(rates, N(rates), rate | IFM_IEEE80211_FH);
1456 case IEEE80211_MODE_AUTO:
1457 /* NB: ic may be NULL for some drivers */
1458 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1459 return findmedia(rates, N(rates),
1460 rate | IFM_IEEE80211_FH);
1461 /* NB: hack, 11g matches both 11b+11a rates */
1463 case IEEE80211_MODE_11G:
1464 case IEEE80211_MODE_11NG:
1465 case IEEE80211_MODE_TURBO_G:
1466 return findmedia(rates, N(rates), rate | IFM_IEEE80211_11G);
1473 ieee80211_media2rate(int mword)
1475 #define N(a) (sizeof(a) / sizeof(a[0]))
1476 static const int ieeerates[] = {
1480 2, /* IFM_IEEE80211_FH1 */
1481 4, /* IFM_IEEE80211_FH2 */
1482 2, /* IFM_IEEE80211_DS1 */
1483 4, /* IFM_IEEE80211_DS2 */
1484 11, /* IFM_IEEE80211_DS5 */
1485 22, /* IFM_IEEE80211_DS11 */
1486 44, /* IFM_IEEE80211_DS22 */
1487 12, /* IFM_IEEE80211_OFDM6 */
1488 18, /* IFM_IEEE80211_OFDM9 */
1489 24, /* IFM_IEEE80211_OFDM12 */
1490 36, /* IFM_IEEE80211_OFDM18 */
1491 48, /* IFM_IEEE80211_OFDM24 */
1492 72, /* IFM_IEEE80211_OFDM36 */
1493 96, /* IFM_IEEE80211_OFDM48 */
1494 108, /* IFM_IEEE80211_OFDM54 */
1495 144, /* IFM_IEEE80211_OFDM72 */
1496 0, /* IFM_IEEE80211_DS354k */
1497 0, /* IFM_IEEE80211_DS512k */
1498 6, /* IFM_IEEE80211_OFDM3 */
1499 9, /* IFM_IEEE80211_OFDM4 */
1500 54, /* IFM_IEEE80211_OFDM27 */
1501 -1, /* IFM_IEEE80211_MCS */
1503 return IFM_SUBTYPE(mword) < N(ieeerates) ?
1504 ieeerates[IFM_SUBTYPE(mword)] : 0;