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_var.h>
43 #include <net/if_dl.h>
44 #include <net/if_media.h>
45 #include <net/if_types.h>
46 #include <net/ethernet.h>
48 #include <net80211/ieee80211_var.h>
49 #include <net80211/ieee80211_regdomain.h>
50 #ifdef IEEE80211_SUPPORT_SUPERG
51 #include <net80211/ieee80211_superg.h>
53 #include <net80211/ieee80211_ratectl.h>
57 const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
58 [IEEE80211_MODE_AUTO] = "auto",
59 [IEEE80211_MODE_11A] = "11a",
60 [IEEE80211_MODE_11B] = "11b",
61 [IEEE80211_MODE_11G] = "11g",
62 [IEEE80211_MODE_FH] = "FH",
63 [IEEE80211_MODE_TURBO_A] = "turboA",
64 [IEEE80211_MODE_TURBO_G] = "turboG",
65 [IEEE80211_MODE_STURBO_A] = "sturboA",
66 [IEEE80211_MODE_HALF] = "half",
67 [IEEE80211_MODE_QUARTER] = "quarter",
68 [IEEE80211_MODE_11NA] = "11na",
69 [IEEE80211_MODE_11NG] = "11ng",
71 /* map ieee80211_opmode to the corresponding capability bit */
72 const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
73 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
74 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
75 [IEEE80211_M_STA] = IEEE80211_C_STA,
76 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
77 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
78 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
79 #ifdef IEEE80211_SUPPORT_MESH
80 [IEEE80211_M_MBSS] = IEEE80211_C_MBSS,
84 static const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
85 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
87 static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
88 static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag);
89 static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
90 static int ieee80211_media_setup(struct ieee80211com *ic,
91 struct ifmedia *media, int caps, int addsta,
92 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
93 static void ieee80211com_media_status(struct ifnet *, struct ifmediareq *);
94 static int ieee80211com_media_change(struct ifnet *);
95 static int media_status(enum ieee80211_opmode,
96 const struct ieee80211_channel *);
98 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
101 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
103 #define B(r) ((r) | IEEE80211_RATE_BASIC)
104 static const struct ieee80211_rateset ieee80211_rateset_11a =
105 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
106 static const struct ieee80211_rateset ieee80211_rateset_half =
107 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
108 static const struct ieee80211_rateset ieee80211_rateset_quarter =
109 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
110 static const struct ieee80211_rateset ieee80211_rateset_11b =
111 { 4, { B(2), B(4), B(11), B(22) } };
112 /* NB: OFDM rates are handled specially based on mode */
113 static const struct ieee80211_rateset ieee80211_rateset_11g =
114 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
118 * Fill in 802.11 available channel set, mark
119 * all available channels as active, and pick
120 * a default channel if not already specified.
123 ieee80211_chan_init(struct ieee80211com *ic)
125 #define DEFAULTRATES(m, def) do { \
126 if (ic->ic_sup_rates[m].rs_nrates == 0) \
127 ic->ic_sup_rates[m] = def; \
129 struct ieee80211_channel *c;
132 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
133 ("invalid number of channels specified: %u", ic->ic_nchans));
134 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
135 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
136 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
137 for (i = 0; i < ic->ic_nchans; i++) {
138 c = &ic->ic_channels[i];
139 KASSERT(c->ic_flags != 0, ("channel with no flags"));
141 * Help drivers that work only with frequencies by filling
142 * in IEEE channel #'s if not already calculated. Note this
143 * mimics similar work done in ieee80211_setregdomain when
144 * changing regulatory state.
147 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
148 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
149 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
150 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
152 /* default max tx power to max regulatory */
153 if (c->ic_maxpower == 0)
154 c->ic_maxpower = 2*c->ic_maxregpower;
155 setbit(ic->ic_chan_avail, c->ic_ieee);
157 * Identify mode capabilities.
159 if (IEEE80211_IS_CHAN_A(c))
160 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
161 if (IEEE80211_IS_CHAN_B(c))
162 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
163 if (IEEE80211_IS_CHAN_ANYG(c))
164 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
165 if (IEEE80211_IS_CHAN_FHSS(c))
166 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
167 if (IEEE80211_IS_CHAN_108A(c))
168 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
169 if (IEEE80211_IS_CHAN_108G(c))
170 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
171 if (IEEE80211_IS_CHAN_ST(c))
172 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
173 if (IEEE80211_IS_CHAN_HALF(c))
174 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
175 if (IEEE80211_IS_CHAN_QUARTER(c))
176 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
177 if (IEEE80211_IS_CHAN_HTA(c))
178 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
179 if (IEEE80211_IS_CHAN_HTG(c))
180 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
182 /* initialize candidate channels to all available */
183 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
184 sizeof(ic->ic_chan_avail));
186 /* sort channel table to allow lookup optimizations */
187 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
189 /* invalidate any previous state */
190 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
191 ic->ic_prevchan = NULL;
192 ic->ic_csa_newchan = NULL;
193 /* arbitrarily pick the first channel */
194 ic->ic_curchan = &ic->ic_channels[0];
195 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
197 /* fillin well-known rate sets if driver has not specified */
198 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
199 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
200 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
201 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
202 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
203 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
204 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
205 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
206 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
207 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
210 * Setup required information to fill the mcsset field, if driver did
211 * not. Assume a 2T2R setup for historic reasons.
213 if (ic->ic_rxstream == 0)
215 if (ic->ic_txstream == 0)
219 * Set auto mode to reset active channel state and any desired channel.
221 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
226 null_update_mcast(struct ifnet *ifp)
228 if_printf(ifp, "need multicast update callback\n");
232 null_update_promisc(struct ifnet *ifp)
234 if_printf(ifp, "need promiscuous mode update callback\n");
238 null_transmit(struct ifnet *ifp, struct mbuf *m)
242 return EACCES; /* XXX EIO/EPERM? */
245 #if __FreeBSD_version >= 1000031
247 null_output(struct ifnet *ifp, struct mbuf *m,
248 const struct sockaddr *dst, struct route *ro)
251 null_output(struct ifnet *ifp, struct mbuf *m,
252 struct sockaddr *dst, struct route *ro)
255 if_printf(ifp, "discard raw packet\n");
256 return null_transmit(ifp, m);
260 null_input(struct ifnet *ifp, struct mbuf *m)
262 if_printf(ifp, "if_input should not be called\n");
267 null_update_chw(struct ieee80211com *ic)
270 if_printf(ic->ic_ifp, "%s: need callback\n", __func__);
274 * Attach/setup the common net80211 state. Called by
275 * the driver on attach to prior to creating any vap's.
278 ieee80211_ifattach(struct ieee80211com *ic,
279 const uint8_t macaddr[IEEE80211_ADDR_LEN])
281 struct ifnet *ifp = ic->ic_ifp;
282 struct sockaddr_dl *sdl;
285 KASSERT(ifp->if_type == IFT_IEEE80211, ("if_type %d", ifp->if_type));
287 IEEE80211_LOCK_INIT(ic, ifp->if_xname);
288 IEEE80211_TX_LOCK_INIT(ic, ifp->if_xname);
289 TAILQ_INIT(&ic->ic_vaps);
291 /* Create a taskqueue for all state changes */
292 ic->ic_tq = taskqueue_create("ic_taskq", M_WAITOK | M_ZERO,
293 taskqueue_thread_enqueue, &ic->ic_tq);
294 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq",
297 * Fill in 802.11 available channel set, mark all
298 * available channels as active, and pick a default
299 * channel if not already specified.
301 ieee80211_media_init(ic);
303 ic->ic_update_mcast = null_update_mcast;
304 ic->ic_update_promisc = null_update_promisc;
305 ic->ic_update_chw = null_update_chw;
307 ic->ic_hash_key = arc4random();
308 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
309 ic->ic_lintval = ic->ic_bintval;
310 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
312 ieee80211_crypto_attach(ic);
313 ieee80211_node_attach(ic);
314 ieee80211_power_attach(ic);
315 ieee80211_proto_attach(ic);
316 #ifdef IEEE80211_SUPPORT_SUPERG
317 ieee80211_superg_attach(ic);
319 ieee80211_ht_attach(ic);
320 ieee80211_scan_attach(ic);
321 ieee80211_regdomain_attach(ic);
322 ieee80211_dfs_attach(ic);
324 ieee80211_sysctl_attach(ic);
326 ifp->if_addrlen = IEEE80211_ADDR_LEN;
333 ifp->if_mtu = IEEE80211_MTU_MAX;
334 ifp->if_broadcastaddr = ieee80211broadcastaddr;
335 ifp->if_output = null_output;
336 ifp->if_input = null_input; /* just in case */
337 ifp->if_resolvemulti = NULL; /* NB: callers check */
339 ifa = ifaddr_byindex(ifp->if_index);
340 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
341 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
342 sdl->sdl_type = IFT_ETHER; /* XXX IFT_IEEE80211? */
343 sdl->sdl_alen = IEEE80211_ADDR_LEN;
344 IEEE80211_ADDR_COPY(LLADDR(sdl), macaddr);
351 * Detach net80211 state on device detach. Tear down
352 * all vap's and reclaim all common state prior to the
353 * device state going away. Note we may call back into
354 * driver; it must be prepared for this.
357 ieee80211_ifdetach(struct ieee80211com *ic)
359 struct ifnet *ifp = ic->ic_ifp;
360 struct ieee80211vap *vap;
363 * This detaches the main interface, but not the vaps.
364 * Each VAP may be in a separate VIMAGE.
366 CURVNET_SET(ifp->if_vnet);
371 * The VAP is responsible for setting and clearing
372 * the VIMAGE context.
374 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
375 ieee80211_vap_destroy(vap);
376 ieee80211_waitfor_parent(ic);
378 ieee80211_sysctl_detach(ic);
379 ieee80211_dfs_detach(ic);
380 ieee80211_regdomain_detach(ic);
381 ieee80211_scan_detach(ic);
382 #ifdef IEEE80211_SUPPORT_SUPERG
383 ieee80211_superg_detach(ic);
385 ieee80211_ht_detach(ic);
386 /* NB: must be called before ieee80211_node_detach */
387 ieee80211_proto_detach(ic);
388 ieee80211_crypto_detach(ic);
389 ieee80211_power_detach(ic);
390 ieee80211_node_detach(ic);
392 /* XXX VNET needed? */
393 ifmedia_removeall(&ic->ic_media);
395 taskqueue_free(ic->ic_tq);
396 IEEE80211_TX_LOCK_DESTROY(ic);
397 IEEE80211_LOCK_DESTROY(ic);
401 * Default reset method for use with the ioctl support. This
402 * method is invoked after any state change in the 802.11
403 * layer that should be propagated to the hardware but not
404 * require re-initialization of the 802.11 state machine (e.g
405 * rescanning for an ap). We always return ENETRESET which
406 * should cause the driver to re-initialize the device. Drivers
407 * can override this method to implement more optimized support.
410 default_reset(struct ieee80211vap *vap, u_long cmd)
416 * Prepare a vap for use. Drivers use this call to
417 * setup net80211 state in new vap's prior attaching
418 * them with ieee80211_vap_attach (below).
421 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
422 const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode,
423 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
424 const uint8_t macaddr[IEEE80211_ADDR_LEN])
428 ifp = if_alloc(IFT_ETHER);
430 if_printf(ic->ic_ifp, "%s: unable to allocate ifnet\n",
434 if_initname(ifp, name, unit);
435 ifp->if_softc = vap; /* back pointer */
436 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
437 ifp->if_transmit = ieee80211_vap_transmit;
438 ifp->if_qflush = ieee80211_vap_qflush;
439 ifp->if_ioctl = ieee80211_ioctl;
440 ifp->if_init = ieee80211_init;
444 vap->iv_flags = ic->ic_flags; /* propagate common flags */
445 vap->iv_flags_ext = ic->ic_flags_ext;
446 vap->iv_flags_ven = ic->ic_flags_ven;
447 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
448 vap->iv_htcaps = ic->ic_htcaps;
449 vap->iv_htextcaps = ic->ic_htextcaps;
450 vap->iv_opmode = opmode;
451 vap->iv_caps |= ieee80211_opcap[opmode];
453 case IEEE80211_M_WDS:
455 * WDS links must specify the bssid of the far end.
456 * For legacy operation this is a static relationship.
457 * For non-legacy operation the station must associate
458 * and be authorized to pass traffic. Plumbing the
459 * vap to the proper node happens when the vap
460 * transitions to RUN state.
462 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
463 vap->iv_flags |= IEEE80211_F_DESBSSID;
464 if (flags & IEEE80211_CLONE_WDSLEGACY)
465 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
467 #ifdef IEEE80211_SUPPORT_TDMA
468 case IEEE80211_M_AHDEMO:
469 if (flags & IEEE80211_CLONE_TDMA) {
470 /* NB: checked before clone operation allowed */
471 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
472 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
474 * Propagate TDMA capability to mark vap; this
475 * cannot be removed and is used to distinguish
476 * regular ahdemo operation from ahdemo+tdma.
478 vap->iv_caps |= IEEE80211_C_TDMA;
485 /* auto-enable s/w beacon miss support */
486 if (flags & IEEE80211_CLONE_NOBEACONS)
487 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
488 /* auto-generated or user supplied MAC address */
489 if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR))
490 vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC;
492 * Enable various functionality by default if we're
493 * capable; the driver can override us if it knows better.
495 if (vap->iv_caps & IEEE80211_C_WME)
496 vap->iv_flags |= IEEE80211_F_WME;
497 if (vap->iv_caps & IEEE80211_C_BURST)
498 vap->iv_flags |= IEEE80211_F_BURST;
499 /* NB: bg scanning only makes sense for station mode right now */
500 if (vap->iv_opmode == IEEE80211_M_STA &&
501 (vap->iv_caps & IEEE80211_C_BGSCAN))
502 vap->iv_flags |= IEEE80211_F_BGSCAN;
503 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
504 /* NB: DFS support only makes sense for ap mode right now */
505 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
506 (vap->iv_caps & IEEE80211_C_DFS))
507 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
509 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
510 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
511 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
513 * Install a default reset method for the ioctl support;
514 * the driver can override this.
516 vap->iv_reset = default_reset;
518 IEEE80211_ADDR_COPY(vap->iv_myaddr, macaddr);
520 ieee80211_sysctl_vattach(vap);
521 ieee80211_crypto_vattach(vap);
522 ieee80211_node_vattach(vap);
523 ieee80211_power_vattach(vap);
524 ieee80211_proto_vattach(vap);
525 #ifdef IEEE80211_SUPPORT_SUPERG
526 ieee80211_superg_vattach(vap);
528 ieee80211_ht_vattach(vap);
529 ieee80211_scan_vattach(vap);
530 ieee80211_regdomain_vattach(vap);
531 ieee80211_radiotap_vattach(vap);
532 ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE);
538 * Activate a vap. State should have been prepared with a
539 * call to ieee80211_vap_setup and by the driver. On return
540 * from this call the vap is ready for use.
543 ieee80211_vap_attach(struct ieee80211vap *vap,
544 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
546 struct ifnet *ifp = vap->iv_ifp;
547 struct ieee80211com *ic = vap->iv_ic;
548 struct ifmediareq imr;
551 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
552 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
553 __func__, ieee80211_opmode_name[vap->iv_opmode],
554 ic->ic_ifp->if_xname, vap->iv_flags, vap->iv_flags_ext);
557 * Do late attach work that cannot happen until after
558 * the driver has had a chance to override defaults.
560 ieee80211_node_latevattach(vap);
561 ieee80211_power_latevattach(vap);
563 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
564 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
565 ieee80211_media_status(ifp, &imr);
566 /* NB: strip explicit mode; we're actually in autoselect */
567 ifmedia_set(&vap->iv_media,
568 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
570 ifp->if_baudrate = IF_Mbps(maxrate);
572 ether_ifattach(ifp, vap->iv_myaddr);
573 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
574 /* NB: disallow transmit */
575 ifp->if_transmit = null_transmit;
576 ifp->if_output = null_output;
578 /* hook output method setup by ether_ifattach */
579 vap->iv_output = ifp->if_output;
580 ifp->if_output = ieee80211_output;
582 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
585 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
586 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
587 #ifdef IEEE80211_SUPPORT_SUPERG
588 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
590 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
591 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
592 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
593 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
594 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
595 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
596 IEEE80211_UNLOCK(ic);
602 * Tear down vap state and reclaim the ifnet.
603 * The driver is assumed to have prepared for
604 * this; e.g. by turning off interrupts for the
608 ieee80211_vap_detach(struct ieee80211vap *vap)
610 struct ieee80211com *ic = vap->iv_ic;
611 struct ifnet *ifp = vap->iv_ifp;
613 CURVNET_SET(ifp->if_vnet);
615 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
616 __func__, ieee80211_opmode_name[vap->iv_opmode],
617 ic->ic_ifp->if_xname);
619 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */
625 * Flush any deferred vap tasks.
627 ieee80211_draintask(ic, &vap->iv_nstate_task);
628 ieee80211_draintask(ic, &vap->iv_swbmiss_task);
630 /* XXX band-aid until ifnet handles this for us */
631 taskqueue_drain(taskqueue_swi, &ifp->if_linktask);
634 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running"));
635 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
636 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
637 #ifdef IEEE80211_SUPPORT_SUPERG
638 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
640 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
641 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
642 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
643 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
644 /* NB: this handles the bpfdetach done below */
645 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);
646 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
647 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
648 IEEE80211_UNLOCK(ic);
650 ifmedia_removeall(&vap->iv_media);
652 ieee80211_radiotap_vdetach(vap);
653 ieee80211_regdomain_vdetach(vap);
654 ieee80211_scan_vdetach(vap);
655 #ifdef IEEE80211_SUPPORT_SUPERG
656 ieee80211_superg_vdetach(vap);
658 ieee80211_ht_vdetach(vap);
659 /* NB: must be before ieee80211_node_vdetach */
660 ieee80211_proto_vdetach(vap);
661 ieee80211_crypto_vdetach(vap);
662 ieee80211_power_vdetach(vap);
663 ieee80211_node_vdetach(vap);
664 ieee80211_sysctl_vdetach(vap);
672 * Synchronize flag bit state in the parent ifnet structure
673 * according to the state of all vap ifnet's. This is used,
674 * for example, to handle IFF_PROMISC and IFF_ALLMULTI.
677 ieee80211_syncifflag_locked(struct ieee80211com *ic, int flag)
679 struct ifnet *ifp = ic->ic_ifp;
680 struct ieee80211vap *vap;
683 IEEE80211_LOCK_ASSERT(ic);
686 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
687 if (vap->iv_ifp->if_flags & flag) {
689 * XXX the bridge sets PROMISC but we don't want to
690 * enable it on the device, discard here so all the
691 * drivers don't need to special-case it
693 if (flag == IFF_PROMISC &&
694 !(vap->iv_opmode == IEEE80211_M_MONITOR ||
695 (vap->iv_opmode == IEEE80211_M_AHDEMO &&
696 (vap->iv_caps & IEEE80211_C_TDMA) == 0)))
701 oflags = ifp->if_flags;
703 ifp->if_flags |= flag;
705 ifp->if_flags &= ~flag;
706 if ((ifp->if_flags ^ oflags) & flag) {
707 /* XXX should we return 1/0 and let caller do this? */
708 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
709 if (flag == IFF_PROMISC)
710 ieee80211_runtask(ic, &ic->ic_promisc_task);
711 else if (flag == IFF_ALLMULTI)
712 ieee80211_runtask(ic, &ic->ic_mcast_task);
718 * Synchronize flag bit state in the com structure
719 * according to the state of all vap's. This is used,
720 * for example, to handle state changes via ioctls.
723 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
725 struct ieee80211vap *vap;
728 IEEE80211_LOCK_ASSERT(ic);
731 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
732 if (vap->iv_flags & flag) {
737 ic->ic_flags |= flag;
739 ic->ic_flags &= ~flag;
743 ieee80211_syncflag(struct ieee80211vap *vap, int flag)
745 struct ieee80211com *ic = vap->iv_ic;
750 vap->iv_flags &= ~flag;
752 vap->iv_flags |= flag;
753 ieee80211_syncflag_locked(ic, flag);
754 IEEE80211_UNLOCK(ic);
758 * Synchronize flags_ht bit state in the com structure
759 * according to the state of all vap's. This is used,
760 * for example, to handle state changes via ioctls.
763 ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag)
765 struct ieee80211vap *vap;
768 IEEE80211_LOCK_ASSERT(ic);
771 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
772 if (vap->iv_flags_ht & flag) {
777 ic->ic_flags_ht |= flag;
779 ic->ic_flags_ht &= ~flag;
783 ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag)
785 struct ieee80211com *ic = vap->iv_ic;
790 vap->iv_flags_ht &= ~flag;
792 vap->iv_flags_ht |= flag;
793 ieee80211_syncflag_ht_locked(ic, flag);
794 IEEE80211_UNLOCK(ic);
798 * Synchronize flags_ext bit state in the com structure
799 * according to the state of all vap's. This is used,
800 * for example, to handle state changes via ioctls.
803 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
805 struct ieee80211vap *vap;
808 IEEE80211_LOCK_ASSERT(ic);
811 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
812 if (vap->iv_flags_ext & flag) {
817 ic->ic_flags_ext |= flag;
819 ic->ic_flags_ext &= ~flag;
823 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
825 struct ieee80211com *ic = vap->iv_ic;
830 vap->iv_flags_ext &= ~flag;
832 vap->iv_flags_ext |= flag;
833 ieee80211_syncflag_ext_locked(ic, flag);
834 IEEE80211_UNLOCK(ic);
838 mapgsm(u_int freq, u_int flags)
841 if (flags & IEEE80211_CHAN_QUARTER)
843 else if (flags & IEEE80211_CHAN_HALF)
847 /* NB: there is no 907/20 wide but leave room */
848 return (freq - 906*10) / 5;
852 mappsb(u_int freq, u_int flags)
854 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
858 * Convert MHz frequency to IEEE channel number.
861 ieee80211_mhz2ieee(u_int freq, u_int flags)
863 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
864 if (flags & IEEE80211_CHAN_GSM)
865 return mapgsm(freq, flags);
866 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
870 return ((int) freq - 2407) / 5;
872 return 15 + ((freq - 2512) / 20);
873 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
875 /* XXX check regdomain? */
876 if (IS_FREQ_IN_PSB(freq))
877 return mappsb(freq, flags);
878 return (freq - 4000) / 5;
880 return (freq - 5000) / 5;
881 } else { /* either, guess */
885 if (907 <= freq && freq <= 922)
886 return mapgsm(freq, flags);
887 return ((int) freq - 2407) / 5;
890 if (IS_FREQ_IN_PSB(freq))
891 return mappsb(freq, flags);
892 else if (freq > 4900)
893 return (freq - 4000) / 5;
895 return 15 + ((freq - 2512) / 20);
897 return (freq - 5000) / 5;
899 #undef IS_FREQ_IN_PSB
903 * Convert channel to IEEE channel number.
906 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
909 if_printf(ic->ic_ifp, "invalid channel (NULL)\n");
912 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
916 * Convert IEEE channel number to MHz frequency.
919 ieee80211_ieee2mhz(u_int chan, u_int flags)
921 if (flags & IEEE80211_CHAN_GSM)
922 return 907 + 5 * (chan / 10);
923 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
927 return 2407 + chan*5;
929 return 2512 + ((chan-15)*20);
930 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
931 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
933 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
935 return 5000 + (chan*5);
936 } else { /* either, guess */
937 /* XXX can't distinguish PSB+GSM channels */
940 if (chan < 14) /* 0-13 */
941 return 2407 + chan*5;
942 if (chan < 27) /* 15-26 */
943 return 2512 + ((chan-15)*20);
944 return 5000 + (chan*5);
949 * Locate a channel given a frequency+flags. We cache
950 * the previous lookup to optimize switching between two
951 * channels--as happens with dynamic turbo.
953 struct ieee80211_channel *
954 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
956 struct ieee80211_channel *c;
959 flags &= IEEE80211_CHAN_ALLTURBO;
961 if (c != NULL && c->ic_freq == freq &&
962 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
964 /* brute force search */
965 for (i = 0; i < ic->ic_nchans; i++) {
966 c = &ic->ic_channels[i];
967 if (c->ic_freq == freq &&
968 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
975 * Locate a channel given a channel number+flags. We cache
976 * the previous lookup to optimize switching between two
977 * channels--as happens with dynamic turbo.
979 struct ieee80211_channel *
980 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
982 struct ieee80211_channel *c;
985 flags &= IEEE80211_CHAN_ALLTURBO;
987 if (c != NULL && c->ic_ieee == ieee &&
988 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
990 /* brute force search */
991 for (i = 0; i < ic->ic_nchans; i++) {
992 c = &ic->ic_channels[i];
993 if (c->ic_ieee == ieee &&
994 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
1001 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
1003 #define ADD(_ic, _s, _o) \
1004 ifmedia_add(media, \
1005 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
1006 static const u_int mopts[IEEE80211_MODE_MAX] = {
1007 [IEEE80211_MODE_AUTO] = IFM_AUTO,
1008 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
1009 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
1010 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
1011 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
1012 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
1013 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
1014 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
1015 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
1016 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
1017 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
1018 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
1024 ADD(ic, mword, mopt); /* STA mode has no cap */
1025 if (caps & IEEE80211_C_IBSS)
1026 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
1027 if (caps & IEEE80211_C_HOSTAP)
1028 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
1029 if (caps & IEEE80211_C_AHDEMO)
1030 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
1031 if (caps & IEEE80211_C_MONITOR)
1032 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
1033 if (caps & IEEE80211_C_WDS)
1034 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
1035 if (caps & IEEE80211_C_MBSS)
1036 ADD(media, mword, mopt | IFM_IEEE80211_MBSS);
1041 * Setup the media data structures according to the channel and
1045 ieee80211_media_setup(struct ieee80211com *ic,
1046 struct ifmedia *media, int caps, int addsta,
1047 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
1049 int i, j, rate, maxrate, mword, r;
1050 enum ieee80211_phymode mode;
1051 const struct ieee80211_rateset *rs;
1052 struct ieee80211_rateset allrates;
1055 * Fill in media characteristics.
1057 ifmedia_init(media, 0, media_change, media_stat);
1060 * Add media for legacy operating modes.
1062 memset(&allrates, 0, sizeof(allrates));
1063 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
1064 if (isclr(ic->ic_modecaps, mode))
1066 addmedia(media, caps, addsta, mode, IFM_AUTO);
1067 if (mode == IEEE80211_MODE_AUTO)
1069 rs = &ic->ic_sup_rates[mode];
1070 for (i = 0; i < rs->rs_nrates; i++) {
1071 rate = rs->rs_rates[i];
1072 mword = ieee80211_rate2media(ic, rate, mode);
1075 addmedia(media, caps, addsta, mode, mword);
1077 * Add legacy rate to the collection of all rates.
1079 r = rate & IEEE80211_RATE_VAL;
1080 for (j = 0; j < allrates.rs_nrates; j++)
1081 if (allrates.rs_rates[j] == r)
1083 if (j == allrates.rs_nrates) {
1084 /* unique, add to the set */
1085 allrates.rs_rates[j] = r;
1086 allrates.rs_nrates++;
1088 rate = (rate & IEEE80211_RATE_VAL) / 2;
1093 for (i = 0; i < allrates.rs_nrates; i++) {
1094 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
1095 IEEE80211_MODE_AUTO);
1098 /* NB: remove media options from mword */
1099 addmedia(media, caps, addsta,
1100 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
1103 * Add HT/11n media. Note that we do not have enough
1104 * bits in the media subtype to express the MCS so we
1105 * use a "placeholder" media subtype and any fixed MCS
1106 * must be specified with a different mechanism.
1108 for (; mode <= IEEE80211_MODE_11NG; mode++) {
1109 if (isclr(ic->ic_modecaps, mode))
1111 addmedia(media, caps, addsta, mode, IFM_AUTO);
1112 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
1114 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
1115 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
1116 addmedia(media, caps, addsta,
1117 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
1118 i = ic->ic_txstream * 8 - 1;
1119 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
1120 (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40))
1121 rate = ieee80211_htrates[i].ht40_rate_400ns;
1122 else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40))
1123 rate = ieee80211_htrates[i].ht40_rate_800ns;
1124 else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20))
1125 rate = ieee80211_htrates[i].ht20_rate_400ns;
1127 rate = ieee80211_htrates[i].ht20_rate_800ns;
1135 ieee80211_media_init(struct ieee80211com *ic)
1137 struct ifnet *ifp = ic->ic_ifp;
1140 /* NB: this works because the structure is initialized to zero */
1141 if (!LIST_EMPTY(&ic->ic_media.ifm_list)) {
1143 * We are re-initializing the channel list; clear
1144 * the existing media state as the media routines
1145 * don't suppress duplicates.
1147 ifmedia_removeall(&ic->ic_media);
1149 ieee80211_chan_init(ic);
1152 * Recalculate media settings in case new channel list changes
1153 * the set of available modes.
1155 maxrate = ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, 1,
1156 ieee80211com_media_change, ieee80211com_media_status);
1157 /* NB: strip explicit mode; we're actually in autoselect */
1158 ifmedia_set(&ic->ic_media,
1159 media_status(ic->ic_opmode, ic->ic_curchan) &~
1160 (IFM_MMASK | IFM_IEEE80211_TURBO));
1162 ifp->if_baudrate = IF_Mbps(maxrate);
1164 /* XXX need to propagate new media settings to vap's */
1167 /* XXX inline or eliminate? */
1168 const struct ieee80211_rateset *
1169 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
1171 /* XXX does this work for 11ng basic rates? */
1172 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
1176 ieee80211_announce(struct ieee80211com *ic)
1178 struct ifnet *ifp = ic->ic_ifp;
1180 enum ieee80211_phymode mode;
1181 const struct ieee80211_rateset *rs;
1183 /* NB: skip AUTO since it has no rates */
1184 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
1185 if (isclr(ic->ic_modecaps, mode))
1187 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]);
1188 rs = &ic->ic_sup_rates[mode];
1189 for (i = 0; i < rs->rs_nrates; i++) {
1190 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
1193 rate = ieee80211_media2rate(mword);
1194 printf("%s%d%sMbps", (i != 0 ? " " : ""),
1195 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
1199 ieee80211_ht_announce(ic);
1203 ieee80211_announce_channels(struct ieee80211com *ic)
1205 const struct ieee80211_channel *c;
1209 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
1210 for (i = 0; i < ic->ic_nchans; i++) {
1211 c = &ic->ic_channels[i];
1212 if (IEEE80211_IS_CHAN_ST(c))
1214 else if (IEEE80211_IS_CHAN_108A(c))
1216 else if (IEEE80211_IS_CHAN_108G(c))
1218 else if (IEEE80211_IS_CHAN_HT(c))
1220 else if (IEEE80211_IS_CHAN_A(c))
1222 else if (IEEE80211_IS_CHAN_ANYG(c))
1224 else if (IEEE80211_IS_CHAN_B(c))
1228 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
1230 else if (IEEE80211_IS_CHAN_HALF(c))
1232 else if (IEEE80211_IS_CHAN_QUARTER(c))
1236 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
1237 , c->ic_ieee, c->ic_freq, type
1239 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
1240 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
1242 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
1243 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
1249 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
1251 switch (IFM_MODE(ime->ifm_media)) {
1252 case IFM_IEEE80211_11A:
1253 *mode = IEEE80211_MODE_11A;
1255 case IFM_IEEE80211_11B:
1256 *mode = IEEE80211_MODE_11B;
1258 case IFM_IEEE80211_11G:
1259 *mode = IEEE80211_MODE_11G;
1261 case IFM_IEEE80211_FH:
1262 *mode = IEEE80211_MODE_FH;
1264 case IFM_IEEE80211_11NA:
1265 *mode = IEEE80211_MODE_11NA;
1267 case IFM_IEEE80211_11NG:
1268 *mode = IEEE80211_MODE_11NG;
1271 *mode = IEEE80211_MODE_AUTO;
1277 * Turbo mode is an ``option''.
1278 * XXX does not apply to AUTO
1280 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
1281 if (*mode == IEEE80211_MODE_11A) {
1282 if (flags & IEEE80211_F_TURBOP)
1283 *mode = IEEE80211_MODE_TURBO_A;
1285 *mode = IEEE80211_MODE_STURBO_A;
1286 } else if (*mode == IEEE80211_MODE_11G)
1287 *mode = IEEE80211_MODE_TURBO_G;
1296 * Handle a media change request on the underlying interface.
1299 ieee80211com_media_change(struct ifnet *ifp)
1305 * Handle a media change request on the vap interface.
1308 ieee80211_media_change(struct ifnet *ifp)
1310 struct ieee80211vap *vap = ifp->if_softc;
1311 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
1314 if (!media2mode(ime, vap->iv_flags, &newmode))
1316 if (vap->iv_des_mode != newmode) {
1317 vap->iv_des_mode = newmode;
1318 /* XXX kick state machine if up+running */
1324 * Common code to calculate the media status word
1325 * from the operating mode and channel state.
1328 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
1332 status = IFM_IEEE80211;
1334 case IEEE80211_M_STA:
1336 case IEEE80211_M_IBSS:
1337 status |= IFM_IEEE80211_ADHOC;
1339 case IEEE80211_M_HOSTAP:
1340 status |= IFM_IEEE80211_HOSTAP;
1342 case IEEE80211_M_MONITOR:
1343 status |= IFM_IEEE80211_MONITOR;
1345 case IEEE80211_M_AHDEMO:
1346 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
1348 case IEEE80211_M_WDS:
1349 status |= IFM_IEEE80211_WDS;
1351 case IEEE80211_M_MBSS:
1352 status |= IFM_IEEE80211_MBSS;
1355 if (IEEE80211_IS_CHAN_HTA(chan)) {
1356 status |= IFM_IEEE80211_11NA;
1357 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
1358 status |= IFM_IEEE80211_11NG;
1359 } else if (IEEE80211_IS_CHAN_A(chan)) {
1360 status |= IFM_IEEE80211_11A;
1361 } else if (IEEE80211_IS_CHAN_B(chan)) {
1362 status |= IFM_IEEE80211_11B;
1363 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
1364 status |= IFM_IEEE80211_11G;
1365 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
1366 status |= IFM_IEEE80211_FH;
1368 /* XXX else complain? */
1370 if (IEEE80211_IS_CHAN_TURBO(chan))
1371 status |= IFM_IEEE80211_TURBO;
1373 if (IEEE80211_IS_CHAN_HT20(chan))
1374 status |= IFM_IEEE80211_HT20;
1375 if (IEEE80211_IS_CHAN_HT40(chan))
1376 status |= IFM_IEEE80211_HT40;
1382 ieee80211com_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1384 struct ieee80211com *ic = ifp->if_l2com;
1385 struct ieee80211vap *vap;
1387 imr->ifm_status = IFM_AVALID;
1388 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1389 if (vap->iv_ifp->if_flags & IFF_UP) {
1390 imr->ifm_status |= IFM_ACTIVE;
1393 imr->ifm_active = media_status(ic->ic_opmode, ic->ic_curchan);
1394 if (imr->ifm_status & IFM_ACTIVE)
1395 imr->ifm_current = imr->ifm_active;
1399 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1401 struct ieee80211vap *vap = ifp->if_softc;
1402 struct ieee80211com *ic = vap->iv_ic;
1403 enum ieee80211_phymode mode;
1405 imr->ifm_status = IFM_AVALID;
1407 * NB: use the current channel's mode to lock down a xmit
1408 * rate only when running; otherwise we may have a mismatch
1409 * in which case the rate will not be convertible.
1411 if (vap->iv_state == IEEE80211_S_RUN) {
1412 imr->ifm_status |= IFM_ACTIVE;
1413 mode = ieee80211_chan2mode(ic->ic_curchan);
1415 mode = IEEE80211_MODE_AUTO;
1416 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
1418 * Calculate a current rate if possible.
1420 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
1422 * A fixed rate is set, report that.
1424 imr->ifm_active |= ieee80211_rate2media(ic,
1425 vap->iv_txparms[mode].ucastrate, mode);
1426 } else if (vap->iv_opmode == IEEE80211_M_STA) {
1428 * In station mode report the current transmit rate.
1430 imr->ifm_active |= ieee80211_rate2media(ic,
1431 vap->iv_bss->ni_txrate, mode);
1433 imr->ifm_active |= IFM_AUTO;
1434 if (imr->ifm_status & IFM_ACTIVE)
1435 imr->ifm_current = imr->ifm_active;
1439 * Set the current phy mode and recalculate the active channel
1440 * set based on the available channels for this mode. Also
1441 * select a new default/current channel if the current one is
1442 * inappropriate for this mode.
1445 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
1448 * Adjust basic rates in 11b/11g supported rate set.
1449 * Note that if operating on a hal/quarter rate channel
1450 * this is a noop as those rates sets are different
1453 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
1454 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
1456 ic->ic_curmode = mode;
1457 ieee80211_reset_erp(ic); /* reset ERP state */
1463 * Return the phy mode for with the specified channel.
1465 enum ieee80211_phymode
1466 ieee80211_chan2mode(const struct ieee80211_channel *chan)
1469 if (IEEE80211_IS_CHAN_HTA(chan))
1470 return IEEE80211_MODE_11NA;
1471 else if (IEEE80211_IS_CHAN_HTG(chan))
1472 return IEEE80211_MODE_11NG;
1473 else if (IEEE80211_IS_CHAN_108G(chan))
1474 return IEEE80211_MODE_TURBO_G;
1475 else if (IEEE80211_IS_CHAN_ST(chan))
1476 return IEEE80211_MODE_STURBO_A;
1477 else if (IEEE80211_IS_CHAN_TURBO(chan))
1478 return IEEE80211_MODE_TURBO_A;
1479 else if (IEEE80211_IS_CHAN_HALF(chan))
1480 return IEEE80211_MODE_HALF;
1481 else if (IEEE80211_IS_CHAN_QUARTER(chan))
1482 return IEEE80211_MODE_QUARTER;
1483 else if (IEEE80211_IS_CHAN_A(chan))
1484 return IEEE80211_MODE_11A;
1485 else if (IEEE80211_IS_CHAN_ANYG(chan))
1486 return IEEE80211_MODE_11G;
1487 else if (IEEE80211_IS_CHAN_B(chan))
1488 return IEEE80211_MODE_11B;
1489 else if (IEEE80211_IS_CHAN_FHSS(chan))
1490 return IEEE80211_MODE_FH;
1492 /* NB: should not get here */
1493 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
1494 __func__, chan->ic_freq, chan->ic_flags);
1495 return IEEE80211_MODE_11B;
1499 u_int match; /* rate + mode */
1500 u_int media; /* if_media rate */
1504 findmedia(const struct ratemedia rates[], int n, u_int match)
1508 for (i = 0; i < n; i++)
1509 if (rates[i].match == match)
1510 return rates[i].media;
1515 * Convert IEEE80211 rate value to ifmedia subtype.
1516 * Rate is either a legacy rate in units of 0.5Mbps
1520 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
1522 static const struct ratemedia rates[] = {
1523 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
1524 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
1525 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
1526 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
1527 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
1528 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
1529 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
1530 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
1531 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
1532 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
1533 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
1534 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
1535 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
1536 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
1537 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
1538 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
1539 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
1540 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
1541 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
1542 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
1543 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
1544 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
1545 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
1546 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
1547 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
1548 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
1549 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
1550 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
1551 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
1552 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
1553 /* NB: OFDM72 doesn't realy exist so we don't handle it */
1555 static const struct ratemedia htrates[] = {
1556 { 0, IFM_IEEE80211_MCS },
1557 { 1, IFM_IEEE80211_MCS },
1558 { 2, IFM_IEEE80211_MCS },
1559 { 3, IFM_IEEE80211_MCS },
1560 { 4, IFM_IEEE80211_MCS },
1561 { 5, IFM_IEEE80211_MCS },
1562 { 6, IFM_IEEE80211_MCS },
1563 { 7, IFM_IEEE80211_MCS },
1564 { 8, IFM_IEEE80211_MCS },
1565 { 9, IFM_IEEE80211_MCS },
1566 { 10, IFM_IEEE80211_MCS },
1567 { 11, IFM_IEEE80211_MCS },
1568 { 12, IFM_IEEE80211_MCS },
1569 { 13, IFM_IEEE80211_MCS },
1570 { 14, IFM_IEEE80211_MCS },
1571 { 15, IFM_IEEE80211_MCS },
1572 { 16, IFM_IEEE80211_MCS },
1573 { 17, IFM_IEEE80211_MCS },
1574 { 18, IFM_IEEE80211_MCS },
1575 { 19, IFM_IEEE80211_MCS },
1576 { 20, IFM_IEEE80211_MCS },
1577 { 21, IFM_IEEE80211_MCS },
1578 { 22, IFM_IEEE80211_MCS },
1579 { 23, IFM_IEEE80211_MCS },
1580 { 24, IFM_IEEE80211_MCS },
1581 { 25, IFM_IEEE80211_MCS },
1582 { 26, IFM_IEEE80211_MCS },
1583 { 27, IFM_IEEE80211_MCS },
1584 { 28, IFM_IEEE80211_MCS },
1585 { 29, IFM_IEEE80211_MCS },
1586 { 30, IFM_IEEE80211_MCS },
1587 { 31, IFM_IEEE80211_MCS },
1588 { 32, IFM_IEEE80211_MCS },
1589 { 33, IFM_IEEE80211_MCS },
1590 { 34, IFM_IEEE80211_MCS },
1591 { 35, IFM_IEEE80211_MCS },
1592 { 36, IFM_IEEE80211_MCS },
1593 { 37, IFM_IEEE80211_MCS },
1594 { 38, IFM_IEEE80211_MCS },
1595 { 39, IFM_IEEE80211_MCS },
1596 { 40, IFM_IEEE80211_MCS },
1597 { 41, IFM_IEEE80211_MCS },
1598 { 42, IFM_IEEE80211_MCS },
1599 { 43, IFM_IEEE80211_MCS },
1600 { 44, IFM_IEEE80211_MCS },
1601 { 45, IFM_IEEE80211_MCS },
1602 { 46, IFM_IEEE80211_MCS },
1603 { 47, IFM_IEEE80211_MCS },
1604 { 48, IFM_IEEE80211_MCS },
1605 { 49, IFM_IEEE80211_MCS },
1606 { 50, IFM_IEEE80211_MCS },
1607 { 51, IFM_IEEE80211_MCS },
1608 { 52, IFM_IEEE80211_MCS },
1609 { 53, IFM_IEEE80211_MCS },
1610 { 54, IFM_IEEE80211_MCS },
1611 { 55, IFM_IEEE80211_MCS },
1612 { 56, IFM_IEEE80211_MCS },
1613 { 57, IFM_IEEE80211_MCS },
1614 { 58, IFM_IEEE80211_MCS },
1615 { 59, IFM_IEEE80211_MCS },
1616 { 60, IFM_IEEE80211_MCS },
1617 { 61, IFM_IEEE80211_MCS },
1618 { 62, IFM_IEEE80211_MCS },
1619 { 63, IFM_IEEE80211_MCS },
1620 { 64, IFM_IEEE80211_MCS },
1621 { 65, IFM_IEEE80211_MCS },
1622 { 66, IFM_IEEE80211_MCS },
1623 { 67, IFM_IEEE80211_MCS },
1624 { 68, IFM_IEEE80211_MCS },
1625 { 69, IFM_IEEE80211_MCS },
1626 { 70, IFM_IEEE80211_MCS },
1627 { 71, IFM_IEEE80211_MCS },
1628 { 72, IFM_IEEE80211_MCS },
1629 { 73, IFM_IEEE80211_MCS },
1630 { 74, IFM_IEEE80211_MCS },
1631 { 75, IFM_IEEE80211_MCS },
1632 { 76, IFM_IEEE80211_MCS },
1637 * Check 11n rates first for match as an MCS.
1639 if (mode == IEEE80211_MODE_11NA) {
1640 if (rate & IEEE80211_RATE_MCS) {
1641 rate &= ~IEEE80211_RATE_MCS;
1642 m = findmedia(htrates, nitems(htrates), rate);
1644 return m | IFM_IEEE80211_11NA;
1646 } else if (mode == IEEE80211_MODE_11NG) {
1647 /* NB: 12 is ambiguous, it will be treated as an MCS */
1648 if (rate & IEEE80211_RATE_MCS) {
1649 rate &= ~IEEE80211_RATE_MCS;
1650 m = findmedia(htrates, nitems(htrates), rate);
1652 return m | IFM_IEEE80211_11NG;
1655 rate &= IEEE80211_RATE_VAL;
1657 case IEEE80211_MODE_11A:
1658 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
1659 case IEEE80211_MODE_QUARTER:
1660 case IEEE80211_MODE_11NA:
1661 case IEEE80211_MODE_TURBO_A:
1662 case IEEE80211_MODE_STURBO_A:
1663 return findmedia(rates, nitems(rates),
1664 rate | IFM_IEEE80211_11A);
1665 case IEEE80211_MODE_11B:
1666 return findmedia(rates, nitems(rates),
1667 rate | IFM_IEEE80211_11B);
1668 case IEEE80211_MODE_FH:
1669 return findmedia(rates, nitems(rates),
1670 rate | IFM_IEEE80211_FH);
1671 case IEEE80211_MODE_AUTO:
1672 /* NB: ic may be NULL for some drivers */
1673 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
1674 return findmedia(rates, nitems(rates),
1675 rate | IFM_IEEE80211_FH);
1676 /* NB: hack, 11g matches both 11b+11a rates */
1678 case IEEE80211_MODE_11G:
1679 case IEEE80211_MODE_11NG:
1680 case IEEE80211_MODE_TURBO_G:
1681 return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11G);
1687 ieee80211_media2rate(int mword)
1689 static const int ieeerates[] = {
1693 2, /* IFM_IEEE80211_FH1 */
1694 4, /* IFM_IEEE80211_FH2 */
1695 2, /* IFM_IEEE80211_DS1 */
1696 4, /* IFM_IEEE80211_DS2 */
1697 11, /* IFM_IEEE80211_DS5 */
1698 22, /* IFM_IEEE80211_DS11 */
1699 44, /* IFM_IEEE80211_DS22 */
1700 12, /* IFM_IEEE80211_OFDM6 */
1701 18, /* IFM_IEEE80211_OFDM9 */
1702 24, /* IFM_IEEE80211_OFDM12 */
1703 36, /* IFM_IEEE80211_OFDM18 */
1704 48, /* IFM_IEEE80211_OFDM24 */
1705 72, /* IFM_IEEE80211_OFDM36 */
1706 96, /* IFM_IEEE80211_OFDM48 */
1707 108, /* IFM_IEEE80211_OFDM54 */
1708 144, /* IFM_IEEE80211_OFDM72 */
1709 0, /* IFM_IEEE80211_DS354k */
1710 0, /* IFM_IEEE80211_DS512k */
1711 6, /* IFM_IEEE80211_OFDM3 */
1712 9, /* IFM_IEEE80211_OFDM4 */
1713 54, /* IFM_IEEE80211_OFDM27 */
1714 -1, /* IFM_IEEE80211_MCS */
1716 return IFM_SUBTYPE(mword) < nitems(ieeerates) ?
1717 ieeerates[IFM_SUBTYPE(mword)] : 0;
1721 * The following hash function is adapted from "Hash Functions" by Bob Jenkins
1722 * ("Algorithm Alley", Dr. Dobbs Journal, September 1997).
1724 #define mix(a, b, c) \
1726 a -= b; a -= c; a ^= (c >> 13); \
1727 b -= c; b -= a; b ^= (a << 8); \
1728 c -= a; c -= b; c ^= (b >> 13); \
1729 a -= b; a -= c; a ^= (c >> 12); \
1730 b -= c; b -= a; b ^= (a << 16); \
1731 c -= a; c -= b; c ^= (b >> 5); \
1732 a -= b; a -= c; a ^= (c >> 3); \
1733 b -= c; b -= a; b ^= (a << 10); \
1734 c -= a; c -= b; c ^= (b >> 15); \
1735 } while (/*CONSTCOND*/0)
1738 ieee80211_mac_hash(const struct ieee80211com *ic,
1739 const uint8_t addr[IEEE80211_ADDR_LEN])
1741 uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key;