2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 Atsushi Onoe
5 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 * IEEE 802.11 generic handler
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/socket.h>
44 #include <machine/stdarg.h>
47 #include <net/if_var.h>
48 #include <net/if_dl.h>
49 #include <net/if_media.h>
50 #include <net/if_private.h>
51 #include <net/if_types.h>
52 #include <net/ethernet.h>
54 #include <net80211/ieee80211_var.h>
55 #include <net80211/ieee80211_regdomain.h>
56 #ifdef IEEE80211_SUPPORT_SUPERG
57 #include <net80211/ieee80211_superg.h>
59 #include <net80211/ieee80211_ratectl.h>
60 #include <net80211/ieee80211_vht.h>
64 const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = {
65 [IEEE80211_MODE_AUTO] = "auto",
66 [IEEE80211_MODE_11A] = "11a",
67 [IEEE80211_MODE_11B] = "11b",
68 [IEEE80211_MODE_11G] = "11g",
69 [IEEE80211_MODE_FH] = "FH",
70 [IEEE80211_MODE_TURBO_A] = "turboA",
71 [IEEE80211_MODE_TURBO_G] = "turboG",
72 [IEEE80211_MODE_STURBO_A] = "sturboA",
73 [IEEE80211_MODE_HALF] = "half",
74 [IEEE80211_MODE_QUARTER] = "quarter",
75 [IEEE80211_MODE_11NA] = "11na",
76 [IEEE80211_MODE_11NG] = "11ng",
77 [IEEE80211_MODE_VHT_2GHZ] = "11acg",
78 [IEEE80211_MODE_VHT_5GHZ] = "11ac",
80 /* map ieee80211_opmode to the corresponding capability bit */
81 const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = {
82 [IEEE80211_M_IBSS] = IEEE80211_C_IBSS,
83 [IEEE80211_M_WDS] = IEEE80211_C_WDS,
84 [IEEE80211_M_STA] = IEEE80211_C_STA,
85 [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO,
86 [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP,
87 [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR,
88 #ifdef IEEE80211_SUPPORT_MESH
89 [IEEE80211_M_MBSS] = IEEE80211_C_MBSS,
93 const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] =
94 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
96 static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag);
97 static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag);
98 static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag);
99 static void ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag);
100 static int ieee80211_media_setup(struct ieee80211com *ic,
101 struct ifmedia *media, int caps, int addsta,
102 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat);
103 static int media_status(enum ieee80211_opmode,
104 const struct ieee80211_channel *);
105 static uint64_t ieee80211_get_counter(struct ifnet *, ift_counter);
107 MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state");
110 * Default supported rates for 802.11 operation (in IEEE .5Mb units).
112 #define B(r) ((r) | IEEE80211_RATE_BASIC)
113 static const struct ieee80211_rateset ieee80211_rateset_11a =
114 { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
115 static const struct ieee80211_rateset ieee80211_rateset_half =
116 { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
117 static const struct ieee80211_rateset ieee80211_rateset_quarter =
118 { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
119 static const struct ieee80211_rateset ieee80211_rateset_11b =
120 { 4, { B(2), B(4), B(11), B(22) } };
121 /* NB: OFDM rates are handled specially based on mode */
122 static const struct ieee80211_rateset ieee80211_rateset_11g =
123 { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } };
126 static int set_vht_extchan(struct ieee80211_channel *c);
129 * Fill in 802.11 available channel set, mark
130 * all available channels as active, and pick
131 * a default channel if not already specified.
134 ieee80211_chan_init(struct ieee80211com *ic)
136 #define DEFAULTRATES(m, def) do { \
137 if (ic->ic_sup_rates[m].rs_nrates == 0) \
138 ic->ic_sup_rates[m] = def; \
140 struct ieee80211_channel *c;
143 KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
144 ("invalid number of channels specified: %u", ic->ic_nchans));
145 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
146 memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
147 setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
148 for (i = 0; i < ic->ic_nchans; i++) {
149 c = &ic->ic_channels[i];
150 KASSERT(c->ic_flags != 0, ("channel with no flags"));
152 * Help drivers that work only with frequencies by filling
153 * in IEEE channel #'s if not already calculated. Note this
154 * mimics similar work done in ieee80211_setregdomain when
155 * changing regulatory state.
158 c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
161 * Setup the HT40/VHT40 upper/lower bits.
162 * The VHT80/... math is done elsewhere.
164 if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
165 c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
166 (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
169 /* Update VHT math */
171 * XXX VHT again, note that this assumes VHT80/... channels
176 /* default max tx power to max regulatory */
177 if (c->ic_maxpower == 0)
178 c->ic_maxpower = 2*c->ic_maxregpower;
179 setbit(ic->ic_chan_avail, c->ic_ieee);
181 * Identify mode capabilities.
183 if (IEEE80211_IS_CHAN_A(c))
184 setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
185 if (IEEE80211_IS_CHAN_B(c))
186 setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
187 if (IEEE80211_IS_CHAN_ANYG(c))
188 setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
189 if (IEEE80211_IS_CHAN_FHSS(c))
190 setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
191 if (IEEE80211_IS_CHAN_108A(c))
192 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
193 if (IEEE80211_IS_CHAN_108G(c))
194 setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
195 if (IEEE80211_IS_CHAN_ST(c))
196 setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
197 if (IEEE80211_IS_CHAN_HALF(c))
198 setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
199 if (IEEE80211_IS_CHAN_QUARTER(c))
200 setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
201 if (IEEE80211_IS_CHAN_HTA(c))
202 setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
203 if (IEEE80211_IS_CHAN_HTG(c))
204 setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
205 if (IEEE80211_IS_CHAN_VHTA(c))
206 setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_5GHZ);
207 if (IEEE80211_IS_CHAN_VHTG(c))
208 setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_2GHZ);
210 /* initialize candidate channels to all available */
211 memcpy(ic->ic_chan_active, ic->ic_chan_avail,
212 sizeof(ic->ic_chan_avail));
214 /* sort channel table to allow lookup optimizations */
215 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
217 /* invalidate any previous state */
218 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
219 ic->ic_prevchan = NULL;
220 ic->ic_csa_newchan = NULL;
221 /* arbitrarily pick the first channel */
222 ic->ic_curchan = &ic->ic_channels[0];
223 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
225 /* fillin well-known rate sets if driver has not specified */
226 DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
227 DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
228 DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
229 DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
230 DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
231 DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
232 DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
233 DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
234 DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
235 DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
236 DEFAULTRATES(IEEE80211_MODE_VHT_2GHZ, ieee80211_rateset_11g);
237 DEFAULTRATES(IEEE80211_MODE_VHT_5GHZ, ieee80211_rateset_11a);
240 * Setup required information to fill the mcsset field, if driver did
241 * not. Assume a 2T2R setup for historic reasons.
243 if (ic->ic_rxstream == 0)
245 if (ic->ic_txstream == 0)
248 ieee80211_init_suphtrates(ic);
251 * Set auto mode to reset active channel state and any desired channel.
253 (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
258 null_update_mcast(struct ieee80211com *ic)
261 ic_printf(ic, "need multicast update callback\n");
265 null_update_promisc(struct ieee80211com *ic)
268 ic_printf(ic, "need promiscuous mode update callback\n");
272 null_update_chw(struct ieee80211com *ic)
275 ic_printf(ic, "%s: need callback\n", __func__);
279 ic_printf(struct ieee80211com *ic, const char * fmt, ...)
284 retval = printf("%s: ", ic->ic_name);
286 retval += vprintf(fmt, ap);
291 static LIST_HEAD(, ieee80211com) ic_head = LIST_HEAD_INITIALIZER(ic_head);
292 static struct mtx ic_list_mtx;
293 MTX_SYSINIT(ic_list, &ic_list_mtx, "ieee80211com list", MTX_DEF);
296 sysctl_ieee80211coms(SYSCTL_HANDLER_ARGS)
298 struct ieee80211com *ic;
303 error = sysctl_wire_old_buffer(req, 0);
306 sbuf_new_for_sysctl(&sb, NULL, 8, req);
307 sbuf_clear_flags(&sb, SBUF_INCLUDENUL);
309 mtx_lock(&ic_list_mtx);
310 LIST_FOREACH(ic, &ic_head, ic_next) {
311 sbuf_printf(&sb, "%s%s", sp, ic->ic_name);
314 mtx_unlock(&ic_list_mtx);
315 error = sbuf_finish(&sb);
320 SYSCTL_PROC(_net_wlan, OID_AUTO, devices,
321 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
322 sysctl_ieee80211coms, "A", "names of available 802.11 devices");
325 * Attach/setup the common net80211 state. Called by
326 * the driver on attach to prior to creating any vap's.
329 ieee80211_ifattach(struct ieee80211com *ic)
332 IEEE80211_LOCK_INIT(ic, ic->ic_name);
333 IEEE80211_TX_LOCK_INIT(ic, ic->ic_name);
334 TAILQ_INIT(&ic->ic_vaps);
336 /* Create a taskqueue for all state changes */
337 ic->ic_tq = taskqueue_create("ic_taskq",
338 IEEE80211_M_WAITOK | IEEE80211_M_ZERO,
339 taskqueue_thread_enqueue, &ic->ic_tq);
340 taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq",
342 ic->ic_ierrors = counter_u64_alloc(IEEE80211_M_WAITOK);
343 ic->ic_oerrors = counter_u64_alloc(IEEE80211_M_WAITOK);
345 * Fill in 802.11 available channel set, mark all
346 * available channels as active, and pick a default
347 * channel if not already specified.
349 ieee80211_chan_init(ic);
351 ic->ic_update_mcast = null_update_mcast;
352 ic->ic_update_promisc = null_update_promisc;
353 ic->ic_update_chw = null_update_chw;
355 ic->ic_hash_key = arc4random();
356 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
357 ic->ic_lintval = ic->ic_bintval;
358 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
360 ieee80211_crypto_attach(ic);
361 ieee80211_node_attach(ic);
362 ieee80211_power_attach(ic);
363 ieee80211_proto_attach(ic);
364 #ifdef IEEE80211_SUPPORT_SUPERG
365 ieee80211_superg_attach(ic);
367 ieee80211_ht_attach(ic);
368 ieee80211_vht_attach(ic);
369 ieee80211_scan_attach(ic);
370 ieee80211_regdomain_attach(ic);
371 ieee80211_dfs_attach(ic);
373 ieee80211_sysctl_attach(ic);
375 mtx_lock(&ic_list_mtx);
376 LIST_INSERT_HEAD(&ic_head, ic, ic_next);
377 mtx_unlock(&ic_list_mtx);
381 * Detach net80211 state on device detach. Tear down
382 * all vap's and reclaim all common state prior to the
383 * device state going away. Note we may call back into
384 * driver; it must be prepared for this.
387 ieee80211_ifdetach(struct ieee80211com *ic)
389 struct ieee80211vap *vap;
392 * We use this as an indicator that ifattach never had a chance to be
393 * called, e.g. early driver attach failed and ifdetach was called
394 * during subsequent detach. Never fear, for we have nothing to do
397 if (ic->ic_tq == NULL)
400 mtx_lock(&ic_list_mtx);
401 LIST_REMOVE(ic, ic_next);
402 mtx_unlock(&ic_list_mtx);
404 taskqueue_drain(taskqueue_thread, &ic->ic_restart_task);
407 * The VAP is responsible for setting and clearing
408 * the VIMAGE context.
410 while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) {
411 ieee80211_com_vdetach(vap);
412 ieee80211_vap_destroy(vap);
414 ieee80211_waitfor_parent(ic);
416 ieee80211_sysctl_detach(ic);
417 ieee80211_dfs_detach(ic);
418 ieee80211_regdomain_detach(ic);
419 ieee80211_scan_detach(ic);
420 #ifdef IEEE80211_SUPPORT_SUPERG
421 ieee80211_superg_detach(ic);
423 ieee80211_vht_detach(ic);
424 ieee80211_ht_detach(ic);
425 /* NB: must be called before ieee80211_node_detach */
426 ieee80211_proto_detach(ic);
427 ieee80211_crypto_detach(ic);
428 ieee80211_power_detach(ic);
429 ieee80211_node_detach(ic);
431 counter_u64_free(ic->ic_ierrors);
432 counter_u64_free(ic->ic_oerrors);
434 taskqueue_free(ic->ic_tq);
435 IEEE80211_TX_LOCK_DESTROY(ic);
436 IEEE80211_LOCK_DESTROY(ic);
439 struct ieee80211com *
440 ieee80211_find_com(const char *name)
442 struct ieee80211com *ic;
444 mtx_lock(&ic_list_mtx);
445 LIST_FOREACH(ic, &ic_head, ic_next)
446 if (strcmp(ic->ic_name, name) == 0)
448 mtx_unlock(&ic_list_mtx);
454 ieee80211_iterate_coms(ieee80211_com_iter_func *f, void *arg)
456 struct ieee80211com *ic;
458 mtx_lock(&ic_list_mtx);
459 LIST_FOREACH(ic, &ic_head, ic_next)
461 mtx_unlock(&ic_list_mtx);
465 * Default reset method for use with the ioctl support. This
466 * method is invoked after any state change in the 802.11
467 * layer that should be propagated to the hardware but not
468 * require re-initialization of the 802.11 state machine (e.g
469 * rescanning for an ap). We always return ENETRESET which
470 * should cause the driver to re-initialize the device. Drivers
471 * can override this method to implement more optimized support.
474 default_reset(struct ieee80211vap *vap, u_long cmd)
480 * Default for updating the VAP default TX key index.
482 * Drivers that support TX offload as well as hardware encryption offload
483 * may need to be informed of key index changes separate from the key
487 default_update_deftxkey(struct ieee80211vap *vap, ieee80211_keyix kid)
490 /* XXX assert validity */
491 /* XXX assert we're in a key update block */
492 vap->iv_def_txkey = kid;
496 * Add underlying device errors to vap errors.
499 ieee80211_get_counter(struct ifnet *ifp, ift_counter cnt)
501 struct ieee80211vap *vap = ifp->if_softc;
502 struct ieee80211com *ic = vap->iv_ic;
505 rv = if_get_counter_default(ifp, cnt);
507 case IFCOUNTER_OERRORS:
508 rv += counter_u64_fetch(ic->ic_oerrors);
510 case IFCOUNTER_IERRORS:
511 rv += counter_u64_fetch(ic->ic_ierrors);
521 * Prepare a vap for use. Drivers use this call to
522 * setup net80211 state in new vap's prior attaching
523 * them with ieee80211_vap_attach (below).
526 ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap,
527 const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode,
528 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN])
532 ifp = if_alloc(IFT_ETHER);
534 ic_printf(ic, "%s: unable to allocate ifnet\n", __func__);
537 if_initname(ifp, name, unit);
538 ifp->if_softc = vap; /* back pointer */
539 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
540 ifp->if_transmit = ieee80211_vap_transmit;
541 ifp->if_qflush = ieee80211_vap_qflush;
542 ifp->if_ioctl = ieee80211_ioctl;
543 ifp->if_init = ieee80211_init;
544 ifp->if_get_counter = ieee80211_get_counter;
548 vap->iv_flags = ic->ic_flags; /* propagate common flags */
549 vap->iv_flags_ext = ic->ic_flags_ext;
550 vap->iv_flags_ven = ic->ic_flags_ven;
551 vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE;
553 /* 11n capabilities - XXX methodize */
554 vap->iv_htcaps = ic->ic_htcaps;
555 vap->iv_htextcaps = ic->ic_htextcaps;
557 /* 11ac capabilities - XXX methodize */
558 vap->iv_vhtcaps = ic->ic_vhtcaps;
559 vap->iv_vhtextcaps = ic->ic_vhtextcaps;
561 vap->iv_opmode = opmode;
562 vap->iv_caps |= ieee80211_opcap[opmode];
563 IEEE80211_ADDR_COPY(vap->iv_myaddr, ic->ic_macaddr);
565 case IEEE80211_M_WDS:
567 * WDS links must specify the bssid of the far end.
568 * For legacy operation this is a static relationship.
569 * For non-legacy operation the station must associate
570 * and be authorized to pass traffic. Plumbing the
571 * vap to the proper node happens when the vap
572 * transitions to RUN state.
574 IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid);
575 vap->iv_flags |= IEEE80211_F_DESBSSID;
576 if (flags & IEEE80211_CLONE_WDSLEGACY)
577 vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY;
579 #ifdef IEEE80211_SUPPORT_TDMA
580 case IEEE80211_M_AHDEMO:
581 if (flags & IEEE80211_CLONE_TDMA) {
582 /* NB: checked before clone operation allowed */
583 KASSERT(ic->ic_caps & IEEE80211_C_TDMA,
584 ("not TDMA capable, ic_caps 0x%x", ic->ic_caps));
586 * Propagate TDMA capability to mark vap; this
587 * cannot be removed and is used to distinguish
588 * regular ahdemo operation from ahdemo+tdma.
590 vap->iv_caps |= IEEE80211_C_TDMA;
597 /* auto-enable s/w beacon miss support */
598 if (flags & IEEE80211_CLONE_NOBEACONS)
599 vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS;
600 /* auto-generated or user supplied MAC address */
601 if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR))
602 vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC;
604 * Enable various functionality by default if we're
605 * capable; the driver can override us if it knows better.
607 if (vap->iv_caps & IEEE80211_C_WME)
608 vap->iv_flags |= IEEE80211_F_WME;
609 if (vap->iv_caps & IEEE80211_C_BURST)
610 vap->iv_flags |= IEEE80211_F_BURST;
611 /* NB: bg scanning only makes sense for station mode right now */
612 if (vap->iv_opmode == IEEE80211_M_STA &&
613 (vap->iv_caps & IEEE80211_C_BGSCAN))
614 vap->iv_flags |= IEEE80211_F_BGSCAN;
615 vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */
616 /* NB: DFS support only makes sense for ap mode right now */
617 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
618 (vap->iv_caps & IEEE80211_C_DFS))
619 vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
620 /* NB: only flip on U-APSD for hostap/sta for now */
621 if ((vap->iv_opmode == IEEE80211_M_STA)
622 || (vap->iv_opmode == IEEE80211_M_HOSTAP)) {
623 if (vap->iv_caps & IEEE80211_C_UAPSD)
624 vap->iv_flags_ext |= IEEE80211_FEXT_UAPSD;
627 vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
628 vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
629 vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT;
631 * Install a default reset method for the ioctl support;
632 * the driver can override this.
634 vap->iv_reset = default_reset;
637 * Install a default crypto key update method, the driver
640 vap->iv_update_deftxkey = default_update_deftxkey;
642 ieee80211_sysctl_vattach(vap);
643 ieee80211_crypto_vattach(vap);
644 ieee80211_node_vattach(vap);
645 ieee80211_power_vattach(vap);
646 ieee80211_proto_vattach(vap);
647 #ifdef IEEE80211_SUPPORT_SUPERG
648 ieee80211_superg_vattach(vap);
650 ieee80211_ht_vattach(vap);
651 ieee80211_vht_vattach(vap);
652 ieee80211_scan_vattach(vap);
653 ieee80211_regdomain_vattach(vap);
654 ieee80211_radiotap_vattach(vap);
655 ieee80211_vap_reset_erp(vap);
656 ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE);
662 * Activate a vap. State should have been prepared with a
663 * call to ieee80211_vap_setup and by the driver. On return
664 * from this call the vap is ready for use.
667 ieee80211_vap_attach(struct ieee80211vap *vap, ifm_change_cb_t media_change,
668 ifm_stat_cb_t media_stat, const uint8_t macaddr[IEEE80211_ADDR_LEN])
670 struct ifnet *ifp = vap->iv_ifp;
671 struct ieee80211com *ic = vap->iv_ic;
672 struct ifmediareq imr;
675 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
676 "%s: %s parent %s flags 0x%x flags_ext 0x%x\n",
677 __func__, ieee80211_opmode_name[vap->iv_opmode],
678 ic->ic_name, vap->iv_flags, vap->iv_flags_ext);
681 * Do late attach work that cannot happen until after
682 * the driver has had a chance to override defaults.
684 ieee80211_node_latevattach(vap);
685 ieee80211_power_latevattach(vap);
687 maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps,
688 vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat);
689 ieee80211_media_status(ifp, &imr);
690 /* NB: strip explicit mode; we're actually in autoselect */
691 ifmedia_set(&vap->iv_media,
692 imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO));
694 ifp->if_baudrate = IF_Mbps(maxrate);
696 ether_ifattach(ifp, macaddr);
697 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
698 /* hook output method setup by ether_ifattach */
699 vap->iv_output = ifp->if_output;
700 ifp->if_output = ieee80211_output;
701 /* NB: if_mtu set by ether_ifattach to ETHERMTU */
704 TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next);
705 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
706 #ifdef IEEE80211_SUPPORT_SUPERG
707 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
709 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
710 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
711 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
712 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
714 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT);
715 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40);
716 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80);
717 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160);
718 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80);
719 IEEE80211_UNLOCK(ic);
725 * Tear down vap state and reclaim the ifnet.
726 * The driver is assumed to have prepared for
727 * this; e.g. by turning off interrupts for the
731 ieee80211_vap_detach(struct ieee80211vap *vap)
733 struct ieee80211com *ic = vap->iv_ic;
734 struct ifnet *ifp = vap->iv_ifp;
736 CURVNET_SET(ifp->if_vnet);
738 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n",
739 __func__, ieee80211_opmode_name[vap->iv_opmode], ic->ic_name);
741 /* NB: bpfdetach is called by ether_ifdetach and claims all taps */
747 * Flush any deferred vap tasks.
749 ieee80211_draintask(ic, &vap->iv_nstate_task);
750 ieee80211_draintask(ic, &vap->iv_swbmiss_task);
751 ieee80211_draintask(ic, &vap->iv_wme_task);
752 ieee80211_draintask(ic, &ic->ic_parent_task);
754 /* XXX band-aid until ifnet handles this for us */
755 taskqueue_drain(taskqueue_swi, &ifp->if_linktask);
758 KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running"));
759 TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next);
760 ieee80211_syncflag_locked(ic, IEEE80211_F_WME);
761 #ifdef IEEE80211_SUPPORT_SUPERG
762 ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP);
764 ieee80211_syncflag_locked(ic, IEEE80211_F_PCF);
765 ieee80211_syncflag_locked(ic, IEEE80211_F_BURST);
766 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT);
767 ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40);
769 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT);
770 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40);
771 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80);
772 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160);
773 ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80);
775 /* NB: this handles the bpfdetach done below */
776 ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);
777 if (vap->iv_ifflags & IFF_PROMISC)
778 ieee80211_promisc(vap, false);
779 if (vap->iv_ifflags & IFF_ALLMULTI)
780 ieee80211_allmulti(vap, false);
781 IEEE80211_UNLOCK(ic);
783 ifmedia_removeall(&vap->iv_media);
785 ieee80211_radiotap_vdetach(vap);
786 ieee80211_regdomain_vdetach(vap);
787 ieee80211_scan_vdetach(vap);
788 #ifdef IEEE80211_SUPPORT_SUPERG
789 ieee80211_superg_vdetach(vap);
791 ieee80211_vht_vdetach(vap);
792 ieee80211_ht_vdetach(vap);
793 /* NB: must be before ieee80211_node_vdetach */
794 ieee80211_proto_vdetach(vap);
795 ieee80211_crypto_vdetach(vap);
796 ieee80211_power_vdetach(vap);
797 ieee80211_node_vdetach(vap);
798 ieee80211_sysctl_vdetach(vap);
806 * Count number of vaps in promisc, and issue promisc on
807 * parent respectively.
810 ieee80211_promisc(struct ieee80211vap *vap, bool on)
812 struct ieee80211com *ic = vap->iv_ic;
814 IEEE80211_LOCK_ASSERT(ic);
817 if (++ic->ic_promisc == 1)
818 ieee80211_runtask(ic, &ic->ic_promisc_task);
820 KASSERT(ic->ic_promisc > 0, ("%s: ic %p not promisc",
822 if (--ic->ic_promisc == 0)
823 ieee80211_runtask(ic, &ic->ic_promisc_task);
828 * Count number of vaps in allmulti, and issue allmulti on
829 * parent respectively.
832 ieee80211_allmulti(struct ieee80211vap *vap, bool on)
834 struct ieee80211com *ic = vap->iv_ic;
836 IEEE80211_LOCK_ASSERT(ic);
839 if (++ic->ic_allmulti == 1)
840 ieee80211_runtask(ic, &ic->ic_mcast_task);
842 KASSERT(ic->ic_allmulti > 0, ("%s: ic %p not allmulti",
844 if (--ic->ic_allmulti == 0)
845 ieee80211_runtask(ic, &ic->ic_mcast_task);
850 * Synchronize flag bit state in the com structure
851 * according to the state of all vap's. This is used,
852 * for example, to handle state changes via ioctls.
855 ieee80211_syncflag_locked(struct ieee80211com *ic, int flag)
857 struct ieee80211vap *vap;
860 IEEE80211_LOCK_ASSERT(ic);
863 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
864 if (vap->iv_flags & flag) {
869 ic->ic_flags |= flag;
871 ic->ic_flags &= ~flag;
875 ieee80211_syncflag(struct ieee80211vap *vap, int flag)
877 struct ieee80211com *ic = vap->iv_ic;
882 vap->iv_flags &= ~flag;
884 vap->iv_flags |= flag;
885 ieee80211_syncflag_locked(ic, flag);
886 IEEE80211_UNLOCK(ic);
890 * Synchronize flags_ht bit state in the com structure
891 * according to the state of all vap's. This is used,
892 * for example, to handle state changes via ioctls.
895 ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag)
897 struct ieee80211vap *vap;
900 IEEE80211_LOCK_ASSERT(ic);
903 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
904 if (vap->iv_flags_ht & flag) {
909 ic->ic_flags_ht |= flag;
911 ic->ic_flags_ht &= ~flag;
915 ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag)
917 struct ieee80211com *ic = vap->iv_ic;
922 vap->iv_flags_ht &= ~flag;
924 vap->iv_flags_ht |= flag;
925 ieee80211_syncflag_ht_locked(ic, flag);
926 IEEE80211_UNLOCK(ic);
930 * Synchronize flags_vht bit state in the com structure
931 * according to the state of all vap's. This is used,
932 * for example, to handle state changes via ioctls.
935 ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag)
937 struct ieee80211vap *vap;
940 IEEE80211_LOCK_ASSERT(ic);
943 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
944 if (vap->iv_flags_vht & flag) {
949 ic->ic_flags_vht |= flag;
951 ic->ic_flags_vht &= ~flag;
955 ieee80211_syncflag_vht(struct ieee80211vap *vap, int flag)
957 struct ieee80211com *ic = vap->iv_ic;
962 vap->iv_flags_vht &= ~flag;
964 vap->iv_flags_vht |= flag;
965 ieee80211_syncflag_vht_locked(ic, flag);
966 IEEE80211_UNLOCK(ic);
970 * Synchronize flags_ext bit state in the com structure
971 * according to the state of all vap's. This is used,
972 * for example, to handle state changes via ioctls.
975 ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag)
977 struct ieee80211vap *vap;
980 IEEE80211_LOCK_ASSERT(ic);
983 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
984 if (vap->iv_flags_ext & flag) {
989 ic->ic_flags_ext |= flag;
991 ic->ic_flags_ext &= ~flag;
995 ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag)
997 struct ieee80211com *ic = vap->iv_ic;
1002 vap->iv_flags_ext &= ~flag;
1004 vap->iv_flags_ext |= flag;
1005 ieee80211_syncflag_ext_locked(ic, flag);
1006 IEEE80211_UNLOCK(ic);
1010 mapgsm(u_int freq, u_int flags)
1013 if (flags & IEEE80211_CHAN_QUARTER)
1015 else if (flags & IEEE80211_CHAN_HALF)
1019 /* NB: there is no 907/20 wide but leave room */
1020 return (freq - 906*10) / 5;
1024 mappsb(u_int freq, u_int flags)
1026 return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
1030 * Convert MHz frequency to IEEE channel number.
1033 ieee80211_mhz2ieee(u_int freq, u_int flags)
1035 #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990)
1036 if (flags & IEEE80211_CHAN_GSM)
1037 return mapgsm(freq, flags);
1038 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
1042 return ((int) freq - 2407) / 5;
1044 return 15 + ((freq - 2512) / 20);
1045 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
1047 /* XXX check regdomain? */
1048 if (IS_FREQ_IN_PSB(freq))
1049 return mappsb(freq, flags);
1050 return (freq - 4000) / 5;
1052 return (freq - 5000) / 5;
1053 } else { /* either, guess */
1057 if (907 <= freq && freq <= 922)
1058 return mapgsm(freq, flags);
1059 return ((int) freq - 2407) / 5;
1062 if (IS_FREQ_IN_PSB(freq))
1063 return mappsb(freq, flags);
1064 else if (freq > 4900)
1065 return (freq - 4000) / 5;
1067 return 15 + ((freq - 2512) / 20);
1069 return (freq - 5000) / 5;
1071 #undef IS_FREQ_IN_PSB
1075 * Convert channel to IEEE channel number.
1078 ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c)
1081 ic_printf(ic, "invalid channel (NULL)\n");
1084 return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee);
1088 * Convert IEEE channel number to MHz frequency.
1091 ieee80211_ieee2mhz(u_int chan, u_int flags)
1093 if (flags & IEEE80211_CHAN_GSM)
1094 return 907 + 5 * (chan / 10);
1095 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
1099 return 2407 + chan*5;
1101 return 2512 + ((chan-15)*20);
1102 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
1103 if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
1105 return 4940 + chan*5 + (chan % 5 ? 2 : 0);
1107 return 5000 + (chan*5);
1108 } else { /* either, guess */
1109 /* XXX can't distinguish PSB+GSM channels */
1112 if (chan < 14) /* 0-13 */
1113 return 2407 + chan*5;
1114 if (chan < 27) /* 15-26 */
1115 return 2512 + ((chan-15)*20);
1116 return 5000 + (chan*5);
1120 static __inline void
1121 set_extchan(struct ieee80211_channel *c)
1125 * IEEE Std 802.11-2012, page 1738, subclause 20.3.15.4:
1126 * "the secondary channel number shall be 'N + [1,-1] * 4'
1128 if (c->ic_flags & IEEE80211_CHAN_HT40U)
1129 c->ic_extieee = c->ic_ieee + 4;
1130 else if (c->ic_flags & IEEE80211_CHAN_HT40D)
1131 c->ic_extieee = c->ic_ieee - 4;
1137 * Populate the freq1/freq2 fields as appropriate for VHT channels.
1139 * This for now uses a hard-coded list of 80MHz wide channels.
1141 * For HT20/HT40, freq1 just is the centre frequency of the 40MHz
1142 * wide channel we've already decided upon.
1144 * For VHT80 and VHT160, there are only a small number of fixed
1145 * 80/160MHz wide channels, so we just use those.
1147 * This is all likely very very wrong - both the regulatory code
1148 * and this code needs to ensure that all four channels are
1149 * available and valid before the VHT80 (and eight for VHT160) channel
1153 struct vht_chan_range {
1154 uint16_t freq_start;
1158 struct vht_chan_range vht80_chan_ranges[] = {
1168 struct vht_chan_range vht160_chan_ranges[] = {
1175 set_vht_extchan(struct ieee80211_channel *c)
1179 if (! IEEE80211_IS_CHAN_VHT(c))
1182 if (IEEE80211_IS_CHAN_VHT80P80(c)) {
1183 printf("%s: TODO VHT80+80 channel (ieee=%d, flags=0x%08x)\n",
1184 __func__, c->ic_ieee, c->ic_flags);
1187 if (IEEE80211_IS_CHAN_VHT160(c)) {
1188 for (i = 0; vht160_chan_ranges[i].freq_start != 0; i++) {
1189 if (c->ic_freq >= vht160_chan_ranges[i].freq_start &&
1190 c->ic_freq < vht160_chan_ranges[i].freq_end) {
1193 midpoint = vht160_chan_ranges[i].freq_start + 80;
1194 c->ic_vht_ch_freq1 =
1195 ieee80211_mhz2ieee(midpoint, c->ic_flags);
1196 c->ic_vht_ch_freq2 = 0;
1198 printf("%s: %d, freq=%d, midpoint=%d, freq1=%d, freq2=%d\n",
1199 __func__, c->ic_ieee, c->ic_freq, midpoint,
1200 c->ic_vht_ch_freq1, c->ic_vht_ch_freq2);
1208 if (IEEE80211_IS_CHAN_VHT80(c)) {
1209 for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) {
1210 if (c->ic_freq >= vht80_chan_ranges[i].freq_start &&
1211 c->ic_freq < vht80_chan_ranges[i].freq_end) {
1214 midpoint = vht80_chan_ranges[i].freq_start + 40;
1215 c->ic_vht_ch_freq1 =
1216 ieee80211_mhz2ieee(midpoint, c->ic_flags);
1217 c->ic_vht_ch_freq2 = 0;
1219 printf("%s: %d, freq=%d, midpoint=%d, freq1=%d, freq2=%d\n",
1220 __func__, c->ic_ieee, c->ic_freq, midpoint,
1221 c->ic_vht_ch_freq1, c->ic_vht_ch_freq2);
1229 if (IEEE80211_IS_CHAN_VHT40(c)) {
1230 if (IEEE80211_IS_CHAN_HT40U(c))
1231 c->ic_vht_ch_freq1 = c->ic_ieee + 2;
1232 else if (IEEE80211_IS_CHAN_HT40D(c))
1233 c->ic_vht_ch_freq1 = c->ic_ieee - 2;
1239 if (IEEE80211_IS_CHAN_VHT20(c)) {
1240 c->ic_vht_ch_freq1 = c->ic_ieee;
1244 printf("%s: unknown VHT channel type (ieee=%d, flags=0x%08x)\n",
1245 __func__, c->ic_ieee, c->ic_flags);
1251 * Return whether the current channel could possibly be a part of
1252 * a VHT80/VHT160 channel.
1254 * This doesn't check that the whole range is in the allowed list
1255 * according to regulatory.
1258 is_vht160_valid_freq(uint16_t freq)
1262 for (i = 0; vht160_chan_ranges[i].freq_start != 0; i++) {
1263 if (freq >= vht160_chan_ranges[i].freq_start &&
1264 freq < vht160_chan_ranges[i].freq_end)
1271 is_vht80_valid_freq(uint16_t freq)
1274 for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) {
1275 if (freq >= vht80_chan_ranges[i].freq_start &&
1276 freq < vht80_chan_ranges[i].freq_end)
1283 addchan(struct ieee80211_channel chans[], int maxchans, int *nchans,
1284 uint8_t ieee, uint16_t freq, int8_t maxregpower, uint32_t flags)
1286 struct ieee80211_channel *c;
1288 if (*nchans >= maxchans)
1292 printf("%s: %d of %d: ieee=%d, freq=%d, flags=0x%08x\n",
1293 __func__, *nchans, maxchans, ieee, freq, flags);
1296 c = &chans[(*nchans)++];
1298 c->ic_freq = freq != 0 ? freq : ieee80211_ieee2mhz(ieee, flags);
1299 c->ic_maxregpower = maxregpower;
1300 c->ic_maxpower = 2 * maxregpower;
1301 c->ic_flags = flags;
1302 c->ic_vht_ch_freq1 = 0;
1303 c->ic_vht_ch_freq2 = 0;
1311 copychan_prev(struct ieee80211_channel chans[], int maxchans, int *nchans,
1314 struct ieee80211_channel *c;
1316 KASSERT(*nchans > 0, ("channel list is empty\n"));
1318 if (*nchans >= maxchans)
1322 printf("%s: %d of %d: flags=0x%08x\n",
1323 __func__, *nchans, maxchans, flags);
1326 c = &chans[(*nchans)++];
1328 c->ic_flags = flags;
1329 c->ic_vht_ch_freq1 = 0;
1330 c->ic_vht_ch_freq2 = 0;
1341 getflags_2ghz(const uint8_t bands[], uint32_t flags[], int cbw_flags)
1346 if (isset(bands, IEEE80211_MODE_11B))
1347 flags[nmodes++] = IEEE80211_CHAN_B;
1348 if (isset(bands, IEEE80211_MODE_11G))
1349 flags[nmodes++] = IEEE80211_CHAN_G;
1350 if (isset(bands, IEEE80211_MODE_11NG))
1351 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT20;
1352 if (cbw_flags & NET80211_CBW_FLAG_HT40) {
1353 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40U;
1354 flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40D;
1360 getflags_5ghz(const uint8_t bands[], uint32_t flags[], int cbw_flags)
1365 * The addchan_list() function seems to expect the flags array to
1366 * be in channel width order, so the VHT bits are interspersed
1367 * as appropriate to maintain said order.
1369 * It also assumes HT40U is before HT40D.
1374 if (isset(bands, IEEE80211_MODE_11A))
1375 flags[nmodes++] = IEEE80211_CHAN_A;
1376 if (isset(bands, IEEE80211_MODE_11NA))
1377 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20;
1378 if (isset(bands, IEEE80211_MODE_VHT_5GHZ)) {
1379 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20 |
1380 IEEE80211_CHAN_VHT20;
1384 if (cbw_flags & NET80211_CBW_FLAG_HT40)
1385 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U;
1386 if ((cbw_flags & NET80211_CBW_FLAG_HT40) &&
1387 isset(bands, IEEE80211_MODE_VHT_5GHZ))
1388 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U |
1389 IEEE80211_CHAN_VHT40U;
1390 if (cbw_flags & NET80211_CBW_FLAG_HT40)
1391 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D;
1392 if ((cbw_flags & NET80211_CBW_FLAG_HT40) &&
1393 isset(bands, IEEE80211_MODE_VHT_5GHZ))
1394 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D |
1395 IEEE80211_CHAN_VHT40D;
1398 if ((cbw_flags & NET80211_CBW_FLAG_VHT80) &&
1399 isset(bands, IEEE80211_MODE_VHT_5GHZ)) {
1400 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U |
1401 IEEE80211_CHAN_VHT80;
1402 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D |
1403 IEEE80211_CHAN_VHT80;
1407 if ((cbw_flags & NET80211_CBW_FLAG_VHT160) &&
1408 isset(bands, IEEE80211_MODE_VHT_5GHZ)) {
1409 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U |
1410 IEEE80211_CHAN_VHT160;
1411 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D |
1412 IEEE80211_CHAN_VHT160;
1416 if ((cbw_flags & NET80211_CBW_FLAG_VHT80P80) &&
1417 isset(bands, IEEE80211_MODE_VHT_5GHZ)) {
1418 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U |
1419 IEEE80211_CHAN_VHT80P80;
1420 flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D |
1421 IEEE80211_CHAN_VHT80P80;
1428 getflags(const uint8_t bands[], uint32_t flags[], int cbw_flags)
1432 if (isset(bands, IEEE80211_MODE_11A) ||
1433 isset(bands, IEEE80211_MODE_11NA) ||
1434 isset(bands, IEEE80211_MODE_VHT_5GHZ)) {
1435 if (isset(bands, IEEE80211_MODE_11B) ||
1436 isset(bands, IEEE80211_MODE_11G) ||
1437 isset(bands, IEEE80211_MODE_11NG) ||
1438 isset(bands, IEEE80211_MODE_VHT_2GHZ))
1441 getflags_5ghz(bands, flags, cbw_flags);
1443 getflags_2ghz(bands, flags, cbw_flags);
1447 * Add one 20 MHz channel into specified channel list.
1448 * You MUST NOT mix bands when calling this. It will not add 5ghz
1449 * channels if you have any B/G/N band bit set.
1450 * The _cbw() variant does also support HT40/VHT80/160/80+80.
1453 ieee80211_add_channel_cbw(struct ieee80211_channel chans[], int maxchans,
1454 int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower,
1455 uint32_t chan_flags, const uint8_t bands[], int cbw_flags)
1457 uint32_t flags[IEEE80211_MODE_MAX];
1460 getflags(bands, flags, cbw_flags);
1461 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__));
1463 error = addchan(chans, maxchans, nchans, ieee, freq, maxregpower,
1464 flags[0] | chan_flags);
1465 for (i = 1; flags[i] != 0 && error == 0; i++) {
1466 error = copychan_prev(chans, maxchans, nchans,
1467 flags[i] | chan_flags);
1474 ieee80211_add_channel(struct ieee80211_channel chans[], int maxchans,
1475 int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower,
1476 uint32_t chan_flags, const uint8_t bands[])
1479 return (ieee80211_add_channel_cbw(chans, maxchans, nchans, ieee, freq,
1480 maxregpower, chan_flags, bands, 0));
1483 static struct ieee80211_channel *
1484 findchannel(struct ieee80211_channel chans[], int nchans, uint16_t freq,
1487 struct ieee80211_channel *c;
1490 flags &= IEEE80211_CHAN_ALLTURBO;
1491 /* brute force search */
1492 for (i = 0; i < nchans; i++) {
1494 if (c->ic_freq == freq &&
1495 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
1502 * Add 40 MHz channel pair into specified channel list.
1506 ieee80211_add_channel_ht40(struct ieee80211_channel chans[], int maxchans,
1507 int *nchans, uint8_t ieee, int8_t maxregpower, uint32_t flags)
1509 struct ieee80211_channel *cent, *extc;
1513 freq = ieee80211_ieee2mhz(ieee, flags);
1516 * Each entry defines an HT40 channel pair; find the
1517 * center channel, then the extension channel above.
1519 flags |= IEEE80211_CHAN_HT20;
1520 cent = findchannel(chans, *nchans, freq, flags);
1524 extc = findchannel(chans, *nchans, freq + 20, flags);
1528 flags &= ~IEEE80211_CHAN_HT;
1529 error = addchan(chans, maxchans, nchans, cent->ic_ieee, cent->ic_freq,
1530 maxregpower, flags | IEEE80211_CHAN_HT40U);
1534 error = addchan(chans, maxchans, nchans, extc->ic_ieee, extc->ic_freq,
1535 maxregpower, flags | IEEE80211_CHAN_HT40D);
1541 * Fetch the center frequency for the primary channel.
1544 ieee80211_get_channel_center_freq(const struct ieee80211_channel *c)
1547 return (c->ic_freq);
1551 * Fetch the center frequency for the primary BAND channel.
1553 * For 5, 10, 20MHz channels it'll be the normally configured channel
1556 * For 40MHz, 80MHz, 160MHz channels it will be the centre of the
1557 * wide channel, not the centre of the primary channel (that's ic_freq).
1559 * For 80+80MHz channels this will be the centre of the primary
1560 * 80MHz channel; the secondary 80MHz channel will be center_freq2().
1563 ieee80211_get_channel_center_freq1(const struct ieee80211_channel *c)
1567 * VHT - use the pre-calculated centre frequency
1568 * of the given channel.
1570 if (IEEE80211_IS_CHAN_VHT(c))
1571 return (ieee80211_ieee2mhz(c->ic_vht_ch_freq1, c->ic_flags));
1573 if (IEEE80211_IS_CHAN_HT40U(c)) {
1574 return (c->ic_freq + 10);
1576 if (IEEE80211_IS_CHAN_HT40D(c)) {
1577 return (c->ic_freq - 10);
1580 return (c->ic_freq);
1584 * For now, no 80+80 support; it will likely always return 0.
1587 ieee80211_get_channel_center_freq2(const struct ieee80211_channel *c)
1590 if (IEEE80211_IS_CHAN_VHT(c) && (c->ic_vht_ch_freq2 != 0))
1591 return (ieee80211_ieee2mhz(c->ic_vht_ch_freq2, c->ic_flags));
1597 * Adds channels into specified channel list (ieee[] array must be sorted).
1598 * Channels are already sorted.
1601 add_chanlist(struct ieee80211_channel chans[], int maxchans, int *nchans,
1602 const uint8_t ieee[], int nieee, uint32_t flags[])
1608 for (i = 0; i < nieee; i++) {
1609 freq = ieee80211_ieee2mhz(ieee[i], flags[0]);
1610 for (j = 0; flags[j] != 0; j++) {
1613 * + HT40 and VHT40 channels occur together, so
1614 * we need to be careful that we actually allow that.
1615 * + VHT80, VHT160 will coexist with HT40/VHT40, so
1616 * make sure it's not skipped because of the overlap
1617 * check used for (V)HT40.
1619 is_vht = !! (flags[j] & IEEE80211_CHAN_VHT);
1621 /* XXX TODO FIXME VHT80P80. */
1623 /* Test for VHT160 analogue to the VHT80 below. */
1624 if (is_vht && flags[j] & IEEE80211_CHAN_VHT160)
1625 if (! is_vht160_valid_freq(freq))
1630 * XXX This is all very broken right now.
1631 * What we /should/ do is:
1633 * + check that the frequency is in the list of
1634 * allowed VHT80 ranges; and
1635 * + the other 3 channels in the list are actually
1638 if (is_vht && flags[j] & IEEE80211_CHAN_VHT80)
1639 if (! is_vht80_valid_freq(freq))
1645 * This is also a fall through from VHT80; as we only
1646 * allow a VHT80 channel if the VHT40 combination is
1647 * also valid. If the VHT40 form is not valid then
1648 * we certainly can't do VHT80..
1650 if (flags[j] & IEEE80211_CHAN_HT40D)
1652 * Can't have a "lower" channel if we are the
1655 * Can't have a "lower" channel if it's below/
1656 * within 20MHz of the first channel.
1658 * Can't have a "lower" channel if the channel
1659 * below it is not 20MHz away.
1661 if (i == 0 || ieee[i] < ieee[0] + 4 ||
1663 ieee80211_ieee2mhz(ieee[i] - 4, flags[j]))
1665 if (flags[j] & IEEE80211_CHAN_HT40U)
1667 * Can't have an "upper" channel if we are
1670 * Can't have an "upper" channel be above the
1671 * last channel in the list.
1673 * Can't have an "upper" channel if the next
1674 * channel according to the math isn't 20MHz
1675 * away. (Likely for channel 13/14.)
1677 if (i == nieee - 1 ||
1678 ieee[i] + 4 > ieee[nieee - 1] ||
1680 ieee80211_ieee2mhz(ieee[i] + 4, flags[j]))
1684 error = addchan(chans, maxchans, nchans,
1685 ieee[i], freq, 0, flags[j]);
1687 error = copychan_prev(chans, maxchans, nchans,
1699 ieee80211_add_channel_list_2ghz(struct ieee80211_channel chans[], int maxchans,
1700 int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[],
1703 uint32_t flags[IEEE80211_MODE_MAX];
1705 /* XXX no VHT for now */
1706 getflags_2ghz(bands, flags, cbw_flags);
1707 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__));
1709 return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags));
1713 ieee80211_add_channels_default_2ghz(struct ieee80211_channel chans[],
1714 int maxchans, int *nchans, const uint8_t bands[], int cbw_flags)
1716 const uint8_t default_chan_list[] =
1717 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
1719 return (ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
1720 default_chan_list, nitems(default_chan_list), bands, cbw_flags));
1724 ieee80211_add_channel_list_5ghz(struct ieee80211_channel chans[], int maxchans,
1725 int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[],
1729 * XXX-BZ with HT and VHT there is no 1:1 mapping anymore. Review all
1730 * uses of IEEE80211_MODE_MAX and add a new #define name for array size.
1732 uint32_t flags[2 * IEEE80211_MODE_MAX];
1734 getflags_5ghz(bands, flags, cbw_flags);
1735 KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__));
1737 return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags));
1741 * Locate a channel given a frequency+flags. We cache
1742 * the previous lookup to optimize switching between two
1743 * channels--as happens with dynamic turbo.
1745 struct ieee80211_channel *
1746 ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags)
1748 struct ieee80211_channel *c;
1750 flags &= IEEE80211_CHAN_ALLTURBO;
1751 c = ic->ic_prevchan;
1752 if (c != NULL && c->ic_freq == freq &&
1753 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
1755 /* brute force search */
1756 return (findchannel(ic->ic_channels, ic->ic_nchans, freq, flags));
1760 * Locate a channel given a channel number+flags. We cache
1761 * the previous lookup to optimize switching between two
1762 * channels--as happens with dynamic turbo.
1764 struct ieee80211_channel *
1765 ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags)
1767 struct ieee80211_channel *c;
1770 flags &= IEEE80211_CHAN_ALLTURBO;
1771 c = ic->ic_prevchan;
1772 if (c != NULL && c->ic_ieee == ieee &&
1773 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
1775 /* brute force search */
1776 for (i = 0; i < ic->ic_nchans; i++) {
1777 c = &ic->ic_channels[i];
1778 if (c->ic_ieee == ieee &&
1779 (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags)
1786 * Lookup a channel suitable for the given rx status.
1788 * This is used to find a channel for a frame (eg beacon, probe
1789 * response) based purely on the received PHY information.
1791 * For now it tries to do it based on R_FREQ / R_IEEE.
1792 * This is enough for 11bg and 11a (and thus 11ng/11na)
1793 * but it will not be enough for GSM, PSB channels and the
1794 * like. It also doesn't know about legacy-turbog and
1795 * legacy-turbo modes, which some offload NICs actually
1796 * support in weird ways.
1798 * Takes the ic and rxstatus; returns the channel or NULL
1801 * XXX TODO: Add support for that when the need arises.
1803 struct ieee80211_channel *
1804 ieee80211_lookup_channel_rxstatus(struct ieee80211vap *vap,
1805 const struct ieee80211_rx_stats *rxs)
1807 struct ieee80211com *ic = vap->iv_ic;
1809 struct ieee80211_channel *c;
1815 * Strictly speaking we only use freq for now,
1816 * however later on we may wish to just store
1817 * the ieee for verification.
1819 if ((rxs->r_flags & IEEE80211_R_FREQ) == 0)
1821 if ((rxs->r_flags & IEEE80211_R_IEEE) == 0)
1823 if ((rxs->r_flags & IEEE80211_R_BAND) == 0)
1827 * If the rx status contains a valid ieee/freq, then
1828 * ensure we populate the correct channel information
1829 * in rxchan before passing it up to the scan infrastructure.
1830 * Offload NICs will pass up beacons from all channels
1831 * during background scans.
1834 /* Determine a band */
1835 switch (rxs->c_band) {
1836 case IEEE80211_CHAN_2GHZ:
1837 flags = IEEE80211_CHAN_G;
1839 case IEEE80211_CHAN_5GHZ:
1840 flags = IEEE80211_CHAN_A;
1843 if (rxs->c_freq < 3000) {
1844 flags = IEEE80211_CHAN_G;
1846 flags = IEEE80211_CHAN_A;
1851 /* Channel lookup */
1852 c = ieee80211_find_channel(ic, rxs->c_freq, flags);
1854 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INPUT,
1855 "%s: freq=%d, ieee=%d, flags=0x%08x; c=%p\n",
1856 __func__, (int) rxs->c_freq, (int) rxs->c_ieee, flags, c);
1862 addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword)
1864 #define ADD(_ic, _s, _o) \
1865 ifmedia_add(media, \
1866 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL)
1867 static const u_int mopts[IEEE80211_MODE_MAX] = {
1868 [IEEE80211_MODE_AUTO] = IFM_AUTO,
1869 [IEEE80211_MODE_11A] = IFM_IEEE80211_11A,
1870 [IEEE80211_MODE_11B] = IFM_IEEE80211_11B,
1871 [IEEE80211_MODE_11G] = IFM_IEEE80211_11G,
1872 [IEEE80211_MODE_FH] = IFM_IEEE80211_FH,
1873 [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
1874 [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO,
1875 [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO,
1876 [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */
1877 [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */
1878 [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA,
1879 [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG,
1880 [IEEE80211_MODE_VHT_2GHZ] = IFM_IEEE80211_VHT2G,
1881 [IEEE80211_MODE_VHT_5GHZ] = IFM_IEEE80211_VHT5G,
1887 ADD(ic, mword, mopt); /* STA mode has no cap */
1888 if (caps & IEEE80211_C_IBSS)
1889 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC);
1890 if (caps & IEEE80211_C_HOSTAP)
1891 ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP);
1892 if (caps & IEEE80211_C_AHDEMO)
1893 ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0);
1894 if (caps & IEEE80211_C_MONITOR)
1895 ADD(media, mword, mopt | IFM_IEEE80211_MONITOR);
1896 if (caps & IEEE80211_C_WDS)
1897 ADD(media, mword, mopt | IFM_IEEE80211_WDS);
1898 if (caps & IEEE80211_C_MBSS)
1899 ADD(media, mword, mopt | IFM_IEEE80211_MBSS);
1904 * Setup the media data structures according to the channel and
1908 ieee80211_media_setup(struct ieee80211com *ic,
1909 struct ifmedia *media, int caps, int addsta,
1910 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat)
1912 int i, j, rate, maxrate, mword, r;
1913 enum ieee80211_phymode mode;
1914 const struct ieee80211_rateset *rs;
1915 struct ieee80211_rateset allrates;
1918 * Fill in media characteristics.
1920 ifmedia_init(media, 0, media_change, media_stat);
1923 * Add media for legacy operating modes.
1925 memset(&allrates, 0, sizeof(allrates));
1926 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) {
1927 if (isclr(ic->ic_modecaps, mode))
1929 addmedia(media, caps, addsta, mode, IFM_AUTO);
1930 if (mode == IEEE80211_MODE_AUTO)
1932 rs = &ic->ic_sup_rates[mode];
1933 for (i = 0; i < rs->rs_nrates; i++) {
1934 rate = rs->rs_rates[i];
1935 mword = ieee80211_rate2media(ic, rate, mode);
1938 addmedia(media, caps, addsta, mode, mword);
1940 * Add legacy rate to the collection of all rates.
1942 r = rate & IEEE80211_RATE_VAL;
1943 for (j = 0; j < allrates.rs_nrates; j++)
1944 if (allrates.rs_rates[j] == r)
1946 if (j == allrates.rs_nrates) {
1947 /* unique, add to the set */
1948 allrates.rs_rates[j] = r;
1949 allrates.rs_nrates++;
1951 rate = (rate & IEEE80211_RATE_VAL) / 2;
1956 for (i = 0; i < allrates.rs_nrates; i++) {
1957 mword = ieee80211_rate2media(ic, allrates.rs_rates[i],
1958 IEEE80211_MODE_AUTO);
1961 /* NB: remove media options from mword */
1962 addmedia(media, caps, addsta,
1963 IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword));
1966 * Add HT/11n media. Note that we do not have enough
1967 * bits in the media subtype to express the MCS so we
1968 * use a "placeholder" media subtype and any fixed MCS
1969 * must be specified with a different mechanism.
1971 for (; mode <= IEEE80211_MODE_11NG; mode++) {
1972 if (isclr(ic->ic_modecaps, mode))
1974 addmedia(media, caps, addsta, mode, IFM_AUTO);
1975 addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS);
1977 if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) ||
1978 isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) {
1979 addmedia(media, caps, addsta,
1980 IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS);
1981 i = ic->ic_txstream * 8 - 1;
1982 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) &&
1983 (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40))
1984 rate = ieee80211_htrates[i].ht40_rate_400ns;
1985 else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40))
1986 rate = ieee80211_htrates[i].ht40_rate_800ns;
1987 else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20))
1988 rate = ieee80211_htrates[i].ht20_rate_400ns;
1990 rate = ieee80211_htrates[i].ht20_rate_800ns;
1997 * XXX-BZ skip "VHT_2GHZ" for now.
1999 for (mode = IEEE80211_MODE_VHT_5GHZ; mode <= IEEE80211_MODE_VHT_5GHZ;
2001 if (isclr(ic->ic_modecaps, mode))
2003 addmedia(media, caps, addsta, mode, IFM_AUTO);
2004 addmedia(media, caps, addsta, mode, IFM_IEEE80211_VHT);
2006 if (isset(ic->ic_modecaps, IEEE80211_MODE_VHT_5GHZ)) {
2007 addmedia(media, caps, addsta,
2008 IEEE80211_MODE_AUTO, IFM_IEEE80211_VHT);
2010 /* XXX TODO: VHT maxrate */
2016 /* XXX inline or eliminate? */
2017 const struct ieee80211_rateset *
2018 ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
2020 /* XXX does this work for 11ng basic rates? */
2021 return &ic->ic_sup_rates[ieee80211_chan2mode(c)];
2024 /* XXX inline or eliminate? */
2025 const struct ieee80211_htrateset *
2026 ieee80211_get_suphtrates(struct ieee80211com *ic,
2027 const struct ieee80211_channel *c)
2029 return &ic->ic_sup_htrates;
2033 ieee80211_announce(struct ieee80211com *ic)
2036 enum ieee80211_phymode mode;
2037 const struct ieee80211_rateset *rs;
2039 /* NB: skip AUTO since it has no rates */
2040 for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) {
2041 if (isclr(ic->ic_modecaps, mode))
2043 ic_printf(ic, "%s rates: ", ieee80211_phymode_name[mode]);
2044 rs = &ic->ic_sup_rates[mode];
2045 for (i = 0; i < rs->rs_nrates; i++) {
2046 mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode);
2049 rate = ieee80211_media2rate(mword);
2050 printf("%s%d%sMbps", (i != 0 ? " " : ""),
2051 rate / 2, ((rate & 0x1) != 0 ? ".5" : ""));
2055 ieee80211_ht_announce(ic);
2056 ieee80211_vht_announce(ic);
2060 ieee80211_announce_channels(struct ieee80211com *ic)
2062 const struct ieee80211_channel *c;
2066 printf("Chan Freq CW RegPwr MinPwr MaxPwr\n");
2067 for (i = 0; i < ic->ic_nchans; i++) {
2068 c = &ic->ic_channels[i];
2069 if (IEEE80211_IS_CHAN_ST(c))
2071 else if (IEEE80211_IS_CHAN_108A(c))
2073 else if (IEEE80211_IS_CHAN_108G(c))
2075 else if (IEEE80211_IS_CHAN_HT(c))
2077 else if (IEEE80211_IS_CHAN_A(c))
2079 else if (IEEE80211_IS_CHAN_ANYG(c))
2081 else if (IEEE80211_IS_CHAN_B(c))
2085 if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c))
2087 else if (IEEE80211_IS_CHAN_HALF(c))
2089 else if (IEEE80211_IS_CHAN_QUARTER(c))
2093 printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n"
2094 , c->ic_ieee, c->ic_freq, type
2096 , IEEE80211_IS_CHAN_HT40U(c) ? '+' :
2097 IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' '
2099 , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0
2100 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0
2106 media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode)
2108 switch (IFM_MODE(ime->ifm_media)) {
2109 case IFM_IEEE80211_11A:
2110 *mode = IEEE80211_MODE_11A;
2112 case IFM_IEEE80211_11B:
2113 *mode = IEEE80211_MODE_11B;
2115 case IFM_IEEE80211_11G:
2116 *mode = IEEE80211_MODE_11G;
2118 case IFM_IEEE80211_FH:
2119 *mode = IEEE80211_MODE_FH;
2121 case IFM_IEEE80211_11NA:
2122 *mode = IEEE80211_MODE_11NA;
2124 case IFM_IEEE80211_11NG:
2125 *mode = IEEE80211_MODE_11NG;
2127 case IFM_IEEE80211_VHT2G:
2128 *mode = IEEE80211_MODE_VHT_2GHZ;
2130 case IFM_IEEE80211_VHT5G:
2131 *mode = IEEE80211_MODE_VHT_5GHZ;
2134 *mode = IEEE80211_MODE_AUTO;
2140 * Turbo mode is an ``option''.
2141 * XXX does not apply to AUTO
2143 if (ime->ifm_media & IFM_IEEE80211_TURBO) {
2144 if (*mode == IEEE80211_MODE_11A) {
2145 if (flags & IEEE80211_F_TURBOP)
2146 *mode = IEEE80211_MODE_TURBO_A;
2148 *mode = IEEE80211_MODE_STURBO_A;
2149 } else if (*mode == IEEE80211_MODE_11G)
2150 *mode = IEEE80211_MODE_TURBO_G;
2159 * Handle a media change request on the vap interface.
2162 ieee80211_media_change(struct ifnet *ifp)
2164 struct ieee80211vap *vap = ifp->if_softc;
2165 struct ifmedia_entry *ime = vap->iv_media.ifm_cur;
2168 if (!media2mode(ime, vap->iv_flags, &newmode))
2170 if (vap->iv_des_mode != newmode) {
2171 vap->iv_des_mode = newmode;
2172 /* XXX kick state machine if up+running */
2178 * Common code to calculate the media status word
2179 * from the operating mode and channel state.
2182 media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan)
2186 status = IFM_IEEE80211;
2188 case IEEE80211_M_STA:
2190 case IEEE80211_M_IBSS:
2191 status |= IFM_IEEE80211_ADHOC;
2193 case IEEE80211_M_HOSTAP:
2194 status |= IFM_IEEE80211_HOSTAP;
2196 case IEEE80211_M_MONITOR:
2197 status |= IFM_IEEE80211_MONITOR;
2199 case IEEE80211_M_AHDEMO:
2200 status |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
2202 case IEEE80211_M_WDS:
2203 status |= IFM_IEEE80211_WDS;
2205 case IEEE80211_M_MBSS:
2206 status |= IFM_IEEE80211_MBSS;
2209 if (IEEE80211_IS_CHAN_VHT_5GHZ(chan)) {
2210 status |= IFM_IEEE80211_VHT5G;
2211 } else if (IEEE80211_IS_CHAN_VHT_2GHZ(chan)) {
2212 status |= IFM_IEEE80211_VHT2G;
2213 } else if (IEEE80211_IS_CHAN_HTA(chan)) {
2214 status |= IFM_IEEE80211_11NA;
2215 } else if (IEEE80211_IS_CHAN_HTG(chan)) {
2216 status |= IFM_IEEE80211_11NG;
2217 } else if (IEEE80211_IS_CHAN_A(chan)) {
2218 status |= IFM_IEEE80211_11A;
2219 } else if (IEEE80211_IS_CHAN_B(chan)) {
2220 status |= IFM_IEEE80211_11B;
2221 } else if (IEEE80211_IS_CHAN_ANYG(chan)) {
2222 status |= IFM_IEEE80211_11G;
2223 } else if (IEEE80211_IS_CHAN_FHSS(chan)) {
2224 status |= IFM_IEEE80211_FH;
2226 /* XXX else complain? */
2228 if (IEEE80211_IS_CHAN_TURBO(chan))
2229 status |= IFM_IEEE80211_TURBO;
2231 if (IEEE80211_IS_CHAN_HT20(chan))
2232 status |= IFM_IEEE80211_HT20;
2233 if (IEEE80211_IS_CHAN_HT40(chan))
2234 status |= IFM_IEEE80211_HT40;
2240 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
2242 struct ieee80211vap *vap = ifp->if_softc;
2243 struct ieee80211com *ic = vap->iv_ic;
2244 enum ieee80211_phymode mode;
2246 imr->ifm_status = IFM_AVALID;
2248 * NB: use the current channel's mode to lock down a xmit
2249 * rate only when running; otherwise we may have a mismatch
2250 * in which case the rate will not be convertible.
2252 if (vap->iv_state == IEEE80211_S_RUN ||
2253 vap->iv_state == IEEE80211_S_SLEEP) {
2254 imr->ifm_status |= IFM_ACTIVE;
2255 mode = ieee80211_chan2mode(ic->ic_curchan);
2257 mode = IEEE80211_MODE_AUTO;
2258 imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan);
2260 * Calculate a current rate if possible.
2262 if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) {
2264 * A fixed rate is set, report that.
2266 imr->ifm_active |= ieee80211_rate2media(ic,
2267 vap->iv_txparms[mode].ucastrate, mode);
2268 } else if (vap->iv_opmode == IEEE80211_M_STA) {
2270 * In station mode report the current transmit rate.
2272 imr->ifm_active |= ieee80211_rate2media(ic,
2273 vap->iv_bss->ni_txrate, mode);
2275 imr->ifm_active |= IFM_AUTO;
2276 if (imr->ifm_status & IFM_ACTIVE)
2277 imr->ifm_current = imr->ifm_active;
2281 * Set the current phy mode and recalculate the active channel
2282 * set based on the available channels for this mode. Also
2283 * select a new default/current channel if the current one is
2284 * inappropriate for this mode.
2287 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
2290 * Adjust basic rates in 11b/11g supported rate set.
2291 * Note that if operating on a hal/quarter rate channel
2292 * this is a noop as those rates sets are different
2295 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
2296 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
2298 ic->ic_curmode = mode;
2299 ieee80211_reset_erp(ic); /* reset global ERP state */
2305 * Return the phy mode for with the specified channel.
2307 enum ieee80211_phymode
2308 ieee80211_chan2mode(const struct ieee80211_channel *chan)
2311 if (IEEE80211_IS_CHAN_VHT_2GHZ(chan))
2312 return IEEE80211_MODE_VHT_2GHZ;
2313 else if (IEEE80211_IS_CHAN_VHT_5GHZ(chan))
2314 return IEEE80211_MODE_VHT_5GHZ;
2315 else if (IEEE80211_IS_CHAN_HTA(chan))
2316 return IEEE80211_MODE_11NA;
2317 else if (IEEE80211_IS_CHAN_HTG(chan))
2318 return IEEE80211_MODE_11NG;
2319 else if (IEEE80211_IS_CHAN_108G(chan))
2320 return IEEE80211_MODE_TURBO_G;
2321 else if (IEEE80211_IS_CHAN_ST(chan))
2322 return IEEE80211_MODE_STURBO_A;
2323 else if (IEEE80211_IS_CHAN_TURBO(chan))
2324 return IEEE80211_MODE_TURBO_A;
2325 else if (IEEE80211_IS_CHAN_HALF(chan))
2326 return IEEE80211_MODE_HALF;
2327 else if (IEEE80211_IS_CHAN_QUARTER(chan))
2328 return IEEE80211_MODE_QUARTER;
2329 else if (IEEE80211_IS_CHAN_A(chan))
2330 return IEEE80211_MODE_11A;
2331 else if (IEEE80211_IS_CHAN_ANYG(chan))
2332 return IEEE80211_MODE_11G;
2333 else if (IEEE80211_IS_CHAN_B(chan))
2334 return IEEE80211_MODE_11B;
2335 else if (IEEE80211_IS_CHAN_FHSS(chan))
2336 return IEEE80211_MODE_FH;
2338 /* NB: should not get here */
2339 printf("%s: cannot map channel to mode; freq %u flags 0x%x\n",
2340 __func__, chan->ic_freq, chan->ic_flags);
2341 return IEEE80211_MODE_11B;
2345 u_int match; /* rate + mode */
2346 u_int media; /* if_media rate */
2350 findmedia(const struct ratemedia rates[], int n, u_int match)
2354 for (i = 0; i < n; i++)
2355 if (rates[i].match == match)
2356 return rates[i].media;
2361 * Convert IEEE80211 rate value to ifmedia subtype.
2362 * Rate is either a legacy rate in units of 0.5Mbps
2366 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode)
2368 static const struct ratemedia rates[] = {
2369 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 },
2370 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 },
2371 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 },
2372 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 },
2373 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 },
2374 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 },
2375 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 },
2376 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 },
2377 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 },
2378 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 },
2379 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 },
2380 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 },
2381 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 },
2382 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 },
2383 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 },
2384 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 },
2385 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 },
2386 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 },
2387 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 },
2388 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 },
2389 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 },
2390 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 },
2391 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 },
2392 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 },
2393 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
2394 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
2395 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
2396 { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
2397 { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
2398 { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
2399 /* NB: OFDM72 doesn't really exist so we don't handle it */
2401 static const struct ratemedia htrates[] = {
2402 { 0, IFM_IEEE80211_MCS },
2403 { 1, IFM_IEEE80211_MCS },
2404 { 2, IFM_IEEE80211_MCS },
2405 { 3, IFM_IEEE80211_MCS },
2406 { 4, IFM_IEEE80211_MCS },
2407 { 5, IFM_IEEE80211_MCS },
2408 { 6, IFM_IEEE80211_MCS },
2409 { 7, IFM_IEEE80211_MCS },
2410 { 8, IFM_IEEE80211_MCS },
2411 { 9, IFM_IEEE80211_MCS },
2412 { 10, IFM_IEEE80211_MCS },
2413 { 11, IFM_IEEE80211_MCS },
2414 { 12, IFM_IEEE80211_MCS },
2415 { 13, IFM_IEEE80211_MCS },
2416 { 14, IFM_IEEE80211_MCS },
2417 { 15, IFM_IEEE80211_MCS },
2418 { 16, IFM_IEEE80211_MCS },
2419 { 17, IFM_IEEE80211_MCS },
2420 { 18, IFM_IEEE80211_MCS },
2421 { 19, IFM_IEEE80211_MCS },
2422 { 20, IFM_IEEE80211_MCS },
2423 { 21, IFM_IEEE80211_MCS },
2424 { 22, IFM_IEEE80211_MCS },
2425 { 23, IFM_IEEE80211_MCS },
2426 { 24, IFM_IEEE80211_MCS },
2427 { 25, IFM_IEEE80211_MCS },
2428 { 26, IFM_IEEE80211_MCS },
2429 { 27, IFM_IEEE80211_MCS },
2430 { 28, IFM_IEEE80211_MCS },
2431 { 29, IFM_IEEE80211_MCS },
2432 { 30, IFM_IEEE80211_MCS },
2433 { 31, IFM_IEEE80211_MCS },
2434 { 32, IFM_IEEE80211_MCS },
2435 { 33, IFM_IEEE80211_MCS },
2436 { 34, IFM_IEEE80211_MCS },
2437 { 35, IFM_IEEE80211_MCS },
2438 { 36, IFM_IEEE80211_MCS },
2439 { 37, IFM_IEEE80211_MCS },
2440 { 38, IFM_IEEE80211_MCS },
2441 { 39, IFM_IEEE80211_MCS },
2442 { 40, IFM_IEEE80211_MCS },
2443 { 41, IFM_IEEE80211_MCS },
2444 { 42, IFM_IEEE80211_MCS },
2445 { 43, IFM_IEEE80211_MCS },
2446 { 44, IFM_IEEE80211_MCS },
2447 { 45, IFM_IEEE80211_MCS },
2448 { 46, IFM_IEEE80211_MCS },
2449 { 47, IFM_IEEE80211_MCS },
2450 { 48, IFM_IEEE80211_MCS },
2451 { 49, IFM_IEEE80211_MCS },
2452 { 50, IFM_IEEE80211_MCS },
2453 { 51, IFM_IEEE80211_MCS },
2454 { 52, IFM_IEEE80211_MCS },
2455 { 53, IFM_IEEE80211_MCS },
2456 { 54, IFM_IEEE80211_MCS },
2457 { 55, IFM_IEEE80211_MCS },
2458 { 56, IFM_IEEE80211_MCS },
2459 { 57, IFM_IEEE80211_MCS },
2460 { 58, IFM_IEEE80211_MCS },
2461 { 59, IFM_IEEE80211_MCS },
2462 { 60, IFM_IEEE80211_MCS },
2463 { 61, IFM_IEEE80211_MCS },
2464 { 62, IFM_IEEE80211_MCS },
2465 { 63, IFM_IEEE80211_MCS },
2466 { 64, IFM_IEEE80211_MCS },
2467 { 65, IFM_IEEE80211_MCS },
2468 { 66, IFM_IEEE80211_MCS },
2469 { 67, IFM_IEEE80211_MCS },
2470 { 68, IFM_IEEE80211_MCS },
2471 { 69, IFM_IEEE80211_MCS },
2472 { 70, IFM_IEEE80211_MCS },
2473 { 71, IFM_IEEE80211_MCS },
2474 { 72, IFM_IEEE80211_MCS },
2475 { 73, IFM_IEEE80211_MCS },
2476 { 74, IFM_IEEE80211_MCS },
2477 { 75, IFM_IEEE80211_MCS },
2478 { 76, IFM_IEEE80211_MCS },
2480 static const struct ratemedia vhtrates[] = {
2481 { 0, IFM_IEEE80211_VHT },
2482 { 1, IFM_IEEE80211_VHT },
2483 { 2, IFM_IEEE80211_VHT },
2484 { 3, IFM_IEEE80211_VHT },
2485 { 4, IFM_IEEE80211_VHT },
2486 { 5, IFM_IEEE80211_VHT },
2487 { 6, IFM_IEEE80211_VHT },
2488 { 7, IFM_IEEE80211_VHT },
2489 { 8, IFM_IEEE80211_VHT }, /* Optional. */
2490 { 9, IFM_IEEE80211_VHT }, /* Optional. */
2492 /* Some QCA and BRCM seem to support this; offspec. */
2493 { 10, IFM_IEEE80211_VHT },
2494 { 11, IFM_IEEE80211_VHT },
2500 * Check 11ac/11n rates first for match as an MCS.
2502 if (mode == IEEE80211_MODE_VHT_5GHZ) {
2503 if (rate & IFM_IEEE80211_VHT) {
2504 rate &= ~IFM_IEEE80211_VHT;
2505 m = findmedia(vhtrates, nitems(vhtrates), rate);
2507 return (m | IFM_IEEE80211_VHT);
2509 } else if (mode == IEEE80211_MODE_11NA) {
2510 if (rate & IEEE80211_RATE_MCS) {
2511 rate &= ~IEEE80211_RATE_MCS;
2512 m = findmedia(htrates, nitems(htrates), rate);
2514 return m | IFM_IEEE80211_11NA;
2516 } else if (mode == IEEE80211_MODE_11NG) {
2517 /* NB: 12 is ambiguous, it will be treated as an MCS */
2518 if (rate & IEEE80211_RATE_MCS) {
2519 rate &= ~IEEE80211_RATE_MCS;
2520 m = findmedia(htrates, nitems(htrates), rate);
2522 return m | IFM_IEEE80211_11NG;
2525 rate &= IEEE80211_RATE_VAL;
2527 case IEEE80211_MODE_11A:
2528 case IEEE80211_MODE_HALF: /* XXX good 'nuf */
2529 case IEEE80211_MODE_QUARTER:
2530 case IEEE80211_MODE_11NA:
2531 case IEEE80211_MODE_TURBO_A:
2532 case IEEE80211_MODE_STURBO_A:
2533 return findmedia(rates, nitems(rates),
2534 rate | IFM_IEEE80211_11A);
2535 case IEEE80211_MODE_11B:
2536 return findmedia(rates, nitems(rates),
2537 rate | IFM_IEEE80211_11B);
2538 case IEEE80211_MODE_FH:
2539 return findmedia(rates, nitems(rates),
2540 rate | IFM_IEEE80211_FH);
2541 case IEEE80211_MODE_AUTO:
2542 /* NB: ic may be NULL for some drivers */
2543 if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH)
2544 return findmedia(rates, nitems(rates),
2545 rate | IFM_IEEE80211_FH);
2546 /* NB: hack, 11g matches both 11b+11a rates */
2548 case IEEE80211_MODE_11G:
2549 case IEEE80211_MODE_11NG:
2550 case IEEE80211_MODE_TURBO_G:
2551 return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11G);
2552 case IEEE80211_MODE_VHT_2GHZ:
2553 case IEEE80211_MODE_VHT_5GHZ:
2554 /* XXX TODO: need to figure out mapping for VHT rates */
2561 ieee80211_media2rate(int mword)
2563 static const int ieeerates[] = {
2567 2, /* IFM_IEEE80211_FH1 */
2568 4, /* IFM_IEEE80211_FH2 */
2569 2, /* IFM_IEEE80211_DS1 */
2570 4, /* IFM_IEEE80211_DS2 */
2571 11, /* IFM_IEEE80211_DS5 */
2572 22, /* IFM_IEEE80211_DS11 */
2573 44, /* IFM_IEEE80211_DS22 */
2574 12, /* IFM_IEEE80211_OFDM6 */
2575 18, /* IFM_IEEE80211_OFDM9 */
2576 24, /* IFM_IEEE80211_OFDM12 */
2577 36, /* IFM_IEEE80211_OFDM18 */
2578 48, /* IFM_IEEE80211_OFDM24 */
2579 72, /* IFM_IEEE80211_OFDM36 */
2580 96, /* IFM_IEEE80211_OFDM48 */
2581 108, /* IFM_IEEE80211_OFDM54 */
2582 144, /* IFM_IEEE80211_OFDM72 */
2583 0, /* IFM_IEEE80211_DS354k */
2584 0, /* IFM_IEEE80211_DS512k */
2585 6, /* IFM_IEEE80211_OFDM3 */
2586 9, /* IFM_IEEE80211_OFDM4 */
2587 54, /* IFM_IEEE80211_OFDM27 */
2588 -1, /* IFM_IEEE80211_MCS */
2589 -1, /* IFM_IEEE80211_VHT */
2591 return IFM_SUBTYPE(mword) < nitems(ieeerates) ?
2592 ieeerates[IFM_SUBTYPE(mword)] : 0;
2596 * The following hash function is adapted from "Hash Functions" by Bob Jenkins
2597 * ("Algorithm Alley", Dr. Dobbs Journal, September 1997).
2599 #define mix(a, b, c) \
2601 a -= b; a -= c; a ^= (c >> 13); \
2602 b -= c; b -= a; b ^= (a << 8); \
2603 c -= a; c -= b; c ^= (b >> 13); \
2604 a -= b; a -= c; a ^= (c >> 12); \
2605 b -= c; b -= a; b ^= (a << 16); \
2606 c -= a; c -= b; c ^= (b >> 5); \
2607 a -= b; a -= c; a ^= (c >> 3); \
2608 b -= c; b -= a; b ^= (a << 10); \
2609 c -= a; c -= b; c ^= (b >> 15); \
2610 } while (/*CONSTCOND*/0)
2613 ieee80211_mac_hash(const struct ieee80211com *ic,
2614 const uint8_t addr[IEEE80211_ADDR_LEN])
2616 uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key;
2632 ieee80211_channel_type_char(const struct ieee80211_channel *c)
2634 if (IEEE80211_IS_CHAN_ST(c))
2636 if (IEEE80211_IS_CHAN_108A(c))
2638 if (IEEE80211_IS_CHAN_108G(c))
2640 if (IEEE80211_IS_CHAN_VHT(c))
2642 if (IEEE80211_IS_CHAN_HT(c))
2644 if (IEEE80211_IS_CHAN_A(c))
2646 if (IEEE80211_IS_CHAN_ANYG(c))
2648 if (IEEE80211_IS_CHAN_B(c))