2 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 * IEEE 802.11 Station mode support.
37 #include <sys/param.h>
38 #include <sys/systm.h>
40 #include <sys/malloc.h>
41 #include <sys/kernel.h>
43 #include <sys/socket.h>
44 #include <sys/sockio.h>
45 #include <sys/endian.h>
46 #include <sys/errno.h>
48 #include <sys/sysctl.h>
51 #include <net/if_media.h>
52 #include <net/if_llc.h>
53 #include <net/if_dl.h>
54 #include <net/if_var.h>
55 #include <net/ethernet.h>
59 #include <net80211/ieee80211_var.h>
60 #include <net80211/ieee80211_sta.h>
61 #include <net80211/ieee80211_input.h>
62 #ifdef IEEE80211_SUPPORT_SUPERG
63 #include <net80211/ieee80211_superg.h>
65 #include <net80211/ieee80211_ratectl.h>
66 #include <net80211/ieee80211_sta.h>
67 #include <net80211/ieee80211_vht.h>
69 #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
71 static void sta_vattach(struct ieee80211vap *);
72 static void sta_beacon_miss(struct ieee80211vap *);
73 static int sta_newstate(struct ieee80211vap *, enum ieee80211_state, int);
74 static int sta_input(struct ieee80211_node *, struct mbuf *,
75 const struct ieee80211_rx_stats *, int, int);
76 static void sta_recv_mgmt(struct ieee80211_node *, struct mbuf *,
77 int subtype, const struct ieee80211_rx_stats *, int rssi, int nf);
78 static void sta_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype);
81 ieee80211_sta_attach(struct ieee80211com *ic)
83 ic->ic_vattach[IEEE80211_M_STA] = sta_vattach;
87 ieee80211_sta_detach(struct ieee80211com *ic)
92 sta_vdetach(struct ieee80211vap *vap)
97 sta_vattach(struct ieee80211vap *vap)
99 vap->iv_newstate = sta_newstate;
100 vap->iv_input = sta_input;
101 vap->iv_recv_mgmt = sta_recv_mgmt;
102 vap->iv_recv_ctl = sta_recv_ctl;
103 vap->iv_opdetach = sta_vdetach;
104 vap->iv_bmiss = sta_beacon_miss;
108 * Handle a beacon miss event. The common code filters out
109 * spurious events that can happen when scanning and/or before
110 * reaching RUN state.
113 sta_beacon_miss(struct ieee80211vap *vap)
115 struct ieee80211com *ic = vap->iv_ic;
117 IEEE80211_LOCK_ASSERT(ic);
119 KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning"));
120 KASSERT(vap->iv_state >= IEEE80211_S_RUN,
121 ("wrong state %s", ieee80211_state_name[vap->iv_state]));
123 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
124 "beacon miss, mode %s state %s\n",
125 ieee80211_opmode_name[vap->iv_opmode],
126 ieee80211_state_name[vap->iv_state]);
128 if (vap->iv_state == IEEE80211_S_CSA) {
130 * A Channel Switch is pending; assume we missed the
131 * beacon that would've completed the process and just
132 * force the switch. If we made a mistake we'll not
133 * find the AP on the new channel and fall back to a
136 ieee80211_csa_completeswitch(ic);
139 if (++vap->iv_bmiss_count < vap->iv_bmiss_max) {
141 * Send a directed probe req before falling back to a
142 * scan; if we receive a response ic_bmiss_count will
143 * be reset. Some cards mistakenly report beacon miss
144 * so this avoids the expensive scan if the ap is
147 ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr,
148 vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid,
149 vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen);
153 callout_stop(&vap->iv_swbmiss);
154 vap->iv_bmiss_count = 0;
155 vap->iv_stats.is_beacon_miss++;
156 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) {
157 #ifdef IEEE80211_SUPPORT_SUPERG
160 * If we receive a beacon miss interrupt when using
161 * dynamic turbo, attempt to switch modes before
164 if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP))
165 ieee80211_dturbo_switch(vap,
166 ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO);
169 * Try to reassociate before scanning for a new ap.
171 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
174 * Somebody else is controlling state changes (e.g.
175 * a user-mode app) don't do anything that would
176 * confuse them; just drop into scan mode so they'll
177 * notified of the state change and given control.
179 ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
184 * Handle deauth with reason. We retry only for
185 * the cases where we might succeed. Otherwise
186 * we downgrade the ap and scan.
189 sta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason)
192 case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */
193 case IEEE80211_STATUS_TIMEOUT:
194 case IEEE80211_REASON_ASSOC_EXPIRE:
195 case IEEE80211_REASON_NOT_AUTHED:
196 case IEEE80211_REASON_NOT_ASSOCED:
197 case IEEE80211_REASON_ASSOC_LEAVE:
198 case IEEE80211_REASON_ASSOC_NOT_AUTHED:
199 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1);
202 ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason);
203 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO)
204 ieee80211_check_scan_current(vap);
210 sta_swbmiss_start(struct ieee80211vap *vap)
213 if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) {
215 * Start s/w beacon miss timer for devices w/o
216 * hardware support. We fudge a bit here since
217 * we're doing this in software.
219 vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS(
220 2 * vap->iv_bmissthreshold * vap->iv_bss->ni_intval);
221 vap->iv_swbmiss_count = 0;
222 callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period,
223 ieee80211_swbmiss, vap);
228 * IEEE80211_M_STA vap state machine handler.
229 * This routine handles the main states in the 802.11 protocol.
232 sta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
234 struct ieee80211com *ic = vap->iv_ic;
235 struct ieee80211_node *ni;
236 enum ieee80211_state ostate;
238 IEEE80211_LOCK_ASSERT(ic);
240 ostate = vap->iv_state;
241 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
242 __func__, ieee80211_state_name[ostate],
243 ieee80211_state_name[nstate], arg);
244 vap->iv_state = nstate; /* state transition */
245 callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */
246 if (ostate != IEEE80211_S_SCAN)
247 ieee80211_cancel_scan(vap); /* background scan */
248 ni = vap->iv_bss; /* NB: no reference held */
249 if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)
250 callout_stop(&vap->iv_swbmiss);
252 case IEEE80211_S_INIT:
254 case IEEE80211_S_SLEEP:
256 /* XXX driver hook to wakeup the hardware? */
257 case IEEE80211_S_RUN:
258 IEEE80211_SEND_MGMT(ni,
259 IEEE80211_FC0_SUBTYPE_DISASSOC,
260 IEEE80211_REASON_ASSOC_LEAVE);
261 ieee80211_sta_leave(ni);
263 case IEEE80211_S_ASSOC:
264 IEEE80211_SEND_MGMT(ni,
265 IEEE80211_FC0_SUBTYPE_DEAUTH,
266 IEEE80211_REASON_AUTH_LEAVE);
268 case IEEE80211_S_SCAN:
269 ieee80211_cancel_scan(vap);
274 if (ostate != IEEE80211_S_INIT) {
275 /* NB: optimize INIT -> INIT case */
276 ieee80211_reset_bss(vap);
278 if (vap->iv_auth->ia_detach != NULL)
279 vap->iv_auth->ia_detach(vap);
281 case IEEE80211_S_SCAN:
283 case IEEE80211_S_INIT:
285 * Initiate a scan. We can come here as a result
286 * of an IEEE80211_IOC_SCAN_REQ too in which case
287 * the vap will be marked with IEEE80211_FEXT_SCANREQ
288 * and the scan request parameters will be present
289 * in iv_scanreq. Otherwise we do the default.
291 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
292 ieee80211_check_scan(vap,
293 vap->iv_scanreq_flags,
294 vap->iv_scanreq_duration,
295 vap->iv_scanreq_mindwell,
296 vap->iv_scanreq_maxdwell,
297 vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
298 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
300 ieee80211_check_scan_current(vap);
302 case IEEE80211_S_SCAN:
303 case IEEE80211_S_AUTH:
304 case IEEE80211_S_ASSOC:
306 * These can happen either because of a timeout
307 * on an assoc/auth response or because of a
308 * change in state that requires a reset. For
309 * the former we're called with a non-zero arg
310 * that is the cause for the failure; pass this
311 * to the scan code so it can update state.
312 * Otherwise trigger a new scan unless we're in
313 * manual roaming mode in which case an application
314 * must issue an explicit scan request.
317 ieee80211_scan_assoc_fail(vap,
318 vap->iv_bss->ni_macaddr, arg);
319 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO)
320 ieee80211_check_scan_current(vap);
322 case IEEE80211_S_SLEEP: /* beacon miss */
324 * XXX if in sleep we need to wakeup the hardware.
327 case IEEE80211_S_RUN: /* beacon miss */
329 * Beacon miss. Notify user space and if not
330 * under control of a user application (roaming
331 * manual) kick off a scan to re-connect.
334 ieee80211_sta_leave(ni);
335 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO)
336 ieee80211_check_scan_current(vap);
342 case IEEE80211_S_AUTH:
344 case IEEE80211_S_INIT:
345 case IEEE80211_S_SCAN:
346 IEEE80211_SEND_MGMT(ni,
347 IEEE80211_FC0_SUBTYPE_AUTH, 1);
349 case IEEE80211_S_AUTH:
350 case IEEE80211_S_ASSOC:
351 switch (arg & 0xff) {
352 case IEEE80211_FC0_SUBTYPE_AUTH:
354 IEEE80211_SEND_MGMT(ni,
355 IEEE80211_FC0_SUBTYPE_AUTH, 2);
357 case IEEE80211_FC0_SUBTYPE_DEAUTH:
358 sta_authretry(vap, ni, arg>>8);
362 case IEEE80211_S_SLEEP:
363 case IEEE80211_S_RUN:
364 switch (arg & 0xff) {
365 case IEEE80211_FC0_SUBTYPE_AUTH:
366 IEEE80211_SEND_MGMT(ni,
367 IEEE80211_FC0_SUBTYPE_AUTH, 2);
368 vap->iv_state = IEEE80211_S_RUN; /* stay RUN */
370 case IEEE80211_FC0_SUBTYPE_DEAUTH:
371 ieee80211_sta_leave(ni);
372 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) {
374 IEEE80211_SEND_MGMT(ni,
375 IEEE80211_FC0_SUBTYPE_AUTH, 1);
384 case IEEE80211_S_ASSOC:
386 case IEEE80211_S_AUTH:
387 case IEEE80211_S_ASSOC:
388 IEEE80211_SEND_MGMT(ni,
389 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
391 case IEEE80211_S_SLEEP: /* cannot happen */
392 case IEEE80211_S_RUN:
393 ieee80211_sta_leave(ni);
394 if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) {
395 IEEE80211_SEND_MGMT(ni, arg ?
396 IEEE80211_FC0_SUBTYPE_REASSOC_REQ :
397 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
404 case IEEE80211_S_RUN:
405 if (vap->iv_flags & IEEE80211_F_WPA) {
406 /* XXX validate prerequisites */
409 case IEEE80211_S_RUN:
410 case IEEE80211_S_CSA:
412 case IEEE80211_S_AUTH: /* when join is done in fw */
413 case IEEE80211_S_ASSOC:
414 #ifdef IEEE80211_DEBUG
415 if (ieee80211_msg_debug(vap)) {
416 ieee80211_note(vap, "%s with %s ssid ",
417 (vap->iv_opmode == IEEE80211_M_STA ?
418 "associated" : "synchronized"),
419 ether_sprintf(ni->ni_bssid));
420 ieee80211_print_essid(vap->iv_bss->ni_essid,
423 printf(" channel %d start %uMb\n",
424 ieee80211_chan2ieee(ic, ic->ic_curchan),
425 IEEE80211_RATE2MBS(ni->ni_txrate));
428 ieee80211_scan_assoc_success(vap, ni->ni_macaddr);
429 ieee80211_notify_node_join(ni,
430 arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
432 case IEEE80211_S_SLEEP:
433 /* Wake up from sleep */
434 vap->iv_sta_ps(vap, 0);
439 ieee80211_sync_curchan(ic);
440 if (ostate != IEEE80211_S_RUN)
441 sta_swbmiss_start(vap);
443 * When 802.1x is not in use mark the port authorized
444 * at this point so traffic can flow.
446 if (ni->ni_authmode != IEEE80211_AUTH_8021X)
447 ieee80211_node_authorize(ni);
449 * Fake association when joining an existing bss.
451 * Don't do this if we're doing SLEEP->RUN.
453 if (ic->ic_newassoc != NULL && ostate != IEEE80211_S_SLEEP)
454 ic->ic_newassoc(vap->iv_bss, (ostate != IEEE80211_S_RUN));
456 case IEEE80211_S_CSA:
457 if (ostate != IEEE80211_S_RUN)
460 case IEEE80211_S_SLEEP:
461 sta_swbmiss_start(vap);
462 vap->iv_sta_ps(vap, 1);
466 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
467 "%s: unexpected state transition %s -> %s\n", __func__,
468 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
475 * Return non-zero if the frame is an echo of a multicast
476 * frame sent by ourself. The dir is known to be DSTODS.
479 isdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh)
481 #define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh)
482 #define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh)
485 KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode"));
487 if (!IEEE80211_IS_MULTICAST(wh->i_addr3))
489 sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4;
490 return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr);
496 * Return non-zero if the frame is an echo of a multicast
497 * frame sent by ourself. The dir is known to be FROMDS.
500 isfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh)
502 KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode"));
504 if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
506 return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr);
510 * Decide if a received management frame should be
511 * printed when debugging is enabled. This filters some
512 * of the less interesting frames that come frequently
516 doprint(struct ieee80211vap *vap, int subtype)
519 case IEEE80211_FC0_SUBTYPE_BEACON:
520 return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN);
521 case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
528 * Process a received frame. The node associated with the sender
529 * should be supplied. If nothing was found in the node table then
530 * the caller is assumed to supply a reference to iv_bss instead.
531 * The RSSI and a timestamp are also supplied. The RSSI data is used
532 * during AP scanning to select a AP to associate with; it can have
533 * any units so long as values have consistent units and higher values
534 * mean ``better signal''. The receive timestamp is currently not used
535 * by the 802.11 layer.
538 sta_input(struct ieee80211_node *ni, struct mbuf *m,
539 const struct ieee80211_rx_stats *rxs, int rssi, int nf)
541 struct ieee80211vap *vap = ni->ni_vap;
542 struct ieee80211com *ic = ni->ni_ic;
543 struct ifnet *ifp = vap->iv_ifp;
544 struct ieee80211_frame *wh;
545 struct ieee80211_key *key;
546 struct ether_header *eh;
547 int hdrspace, need_tap = 1; /* mbuf need to be tapped. */
548 uint8_t dir, type, subtype, qos;
550 int is_hw_decrypted = 0;
551 int has_decrypted = 0;
554 * Some devices do hardware decryption all the way through
555 * to pretending the frame wasn't encrypted in the first place.
556 * So, tag it appropriately so it isn't discarded inappropriately.
558 if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED))
561 if (m->m_flags & M_AMPDU_MPDU) {
563 * Fastpath for A-MPDU reorder q resubmission. Frames
564 * w/ M_AMPDU_MPDU marked have already passed through
565 * here but were received out of order and been held on
566 * the reorder queue. When resubmitted they are marked
567 * with the M_AMPDU_MPDU flag and we can bypass most of
568 * the normal processing.
570 wh = mtod(m, struct ieee80211_frame *);
571 type = IEEE80211_FC0_TYPE_DATA;
572 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
573 subtype = IEEE80211_FC0_SUBTYPE_QOS;
574 hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */
578 KASSERT(ni != NULL, ("null node"));
579 ni->ni_inact = ni->ni_inact_reload;
581 type = -1; /* undefined */
583 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
584 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
585 ni->ni_macaddr, NULL,
586 "too short (1): len %u", m->m_pkthdr.len);
587 vap->iv_stats.is_rx_tooshort++;
591 * Bit of a cheat here, we use a pointer for a 3-address
592 * frame format but don't reference fields past outside
593 * ieee80211_frame_min w/o first validating the data is
596 wh = mtod(m, struct ieee80211_frame *);
598 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
599 IEEE80211_FC0_VERSION_0) {
600 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
601 ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x",
602 wh->i_fc[0], wh->i_fc[1]);
603 vap->iv_stats.is_rx_badversion++;
607 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
608 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
609 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
610 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
612 if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) {
613 /* not interested in */
614 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
615 bssid, NULL, "%s", "not to bss");
616 vap->iv_stats.is_rx_wrongbss++;
621 * Some devices may be in a promiscuous mode
622 * where they receive frames for multiple station
625 * If we receive a data frame that isn't
626 * destined to our VAP MAC, drop it.
628 * XXX TODO: This is only enforced when not scanning;
629 * XXX it assumes a software-driven scan will put the NIC
630 * XXX into a "no data frames" mode before setting this
631 * XXX flag. Otherwise it may be possible that we'll still
632 * XXX process data frames whilst scanning.
634 if ((! IEEE80211_IS_MULTICAST(wh->i_addr1))
635 && (! IEEE80211_ADDR_EQ(wh->i_addr1, IF_LLADDR(ifp)))) {
636 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
637 bssid, NULL, "not to cur sta: lladdr=%6D, addr1=%6D",
638 IF_LLADDR(ifp), ":", wh->i_addr1, ":");
639 vap->iv_stats.is_rx_wrongbss++;
643 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
645 if ( IEEE80211_HAS_SEQ(type, subtype) &&
646 !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
647 uint8_t tid = ieee80211_gettid(wh);
648 if (IEEE80211_QOS_HAS_SEQ(wh) &&
649 TID_TO_WME_AC(tid) >= WME_AC_VI)
650 ic->ic_wme.wme_hipri_traffic++;
651 if (! ieee80211_check_rxseq(ni, wh, bssid))
657 case IEEE80211_FC0_TYPE_DATA:
658 hdrspace = ieee80211_hdrspace(ic, wh);
659 if (m->m_len < hdrspace &&
660 (m = m_pullup(m, hdrspace)) == NULL) {
661 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
662 ni->ni_macaddr, NULL,
663 "data too short: expecting %u", hdrspace);
664 vap->iv_stats.is_rx_tooshort++;
668 * Handle A-MPDU re-ordering. If the frame is to be
669 * processed directly then ieee80211_ampdu_reorder
670 * will return 0; otherwise it has consumed the mbuf
671 * and we should do nothing more with it.
673 if ((m->m_flags & M_AMPDU) &&
674 (dir == IEEE80211_FC1_DIR_FROMDS ||
675 dir == IEEE80211_FC1_DIR_DSTODS) &&
676 ieee80211_ampdu_reorder(ni, m) != 0) {
681 if (dir == IEEE80211_FC1_DIR_FROMDS) {
682 if ((ifp->if_flags & IFF_SIMPLEX) &&
683 isfromds_mcastecho(vap, wh)) {
685 * In IEEE802.11 network, multicast
686 * packets sent from "me" are broadcast
687 * from the AP; silently discard for
690 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
691 wh, "data", "%s", "multicast echo");
692 vap->iv_stats.is_rx_mcastecho++;
695 if ((vap->iv_flags & IEEE80211_F_DWDS) &&
696 IEEE80211_IS_MULTICAST(wh->i_addr1)) {
698 * DWDS sta's must drop 3-address mcast frames
699 * as they will be sent separately as a 4-addr
700 * frame. Accepting the 3-addr frame will
701 * confuse the bridge into thinking the sending
702 * sta is located at the end of WDS link.
704 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh,
705 "3-address data", "%s", "DWDS enabled");
706 vap->iv_stats.is_rx_mcastecho++;
709 } else if (dir == IEEE80211_FC1_DIR_DSTODS) {
710 if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) {
711 IEEE80211_DISCARD(vap,
712 IEEE80211_MSG_INPUT, wh, "4-address data",
713 "%s", "DWDS not enabled");
714 vap->iv_stats.is_rx_wrongdir++;
717 if ((ifp->if_flags & IFF_SIMPLEX) &&
718 isdstods_mcastecho(vap, wh)) {
720 * In IEEE802.11 network, multicast
721 * packets sent from "me" are broadcast
722 * from the AP; silently discard for
725 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh,
726 "4-address data", "%s", "multicast echo");
727 vap->iv_stats.is_rx_mcastecho++;
731 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh,
732 "data", "incorrect dir 0x%x", dir);
733 vap->iv_stats.is_rx_wrongdir++;
738 * Handle privacy requirements for hardware decryption
741 * For those devices, a handful of things happen.
743 * + If IV has been stripped, then we can't run
744 * ieee80211_crypto_decap() - none of the key
745 * + If MIC has been stripped, we can't validate
747 * + If MIC fails, then we need to communicate a
748 * MIC failure up to the stack - but we don't know
749 * which key was used.
753 * Handle privacy requirements. Note that we
754 * must not be preempted from here until after
755 * we (potentially) call ieee80211_crypto_demic;
756 * otherwise we may violate assumptions in the
757 * crypto cipher modules used to do delayed update
758 * of replay sequence numbers.
760 if (is_hw_decrypted || wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
761 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
763 * Discard encrypted frames when privacy is off.
765 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
766 wh, "WEP", "%s", "PRIVACY off");
767 vap->iv_stats.is_rx_noprivacy++;
768 IEEE80211_NODE_STAT(ni, rx_noprivacy);
771 if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) {
772 /* NB: stats+msgs handled in crypto_decap */
773 IEEE80211_NODE_STAT(ni, rx_wepfail);
776 wh = mtod(m, struct ieee80211_frame *);
777 wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED;
780 /* XXX M_WEP and IEEE80211_F_PRIVACY */
785 * Save QoS bits for use below--before we strip the header.
787 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
788 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
789 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
790 ((struct ieee80211_qosframe *)wh)->i_qos[0];
795 * Next up, any fragmentation.
797 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
798 m = ieee80211_defrag(ni, m, hdrspace);
800 /* Fragment dropped or frame not complete yet */
804 wh = NULL; /* no longer valid, catch any uses */
807 * Next strip any MSDU crypto bits.
809 * Note: we can't do MIC stripping/verification if the
810 * upper layer has stripped it. We have to check MIC
811 * ourselves. So, key may be NULL, but we have to check
814 if (!ieee80211_crypto_demic(vap, key, m, 0)) {
815 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
816 ni->ni_macaddr, "data", "%s", "demic error");
817 vap->iv_stats.is_rx_demicfail++;
818 IEEE80211_NODE_STAT(ni, rx_demicfail);
822 /* copy to listener after decrypt */
823 if (ieee80211_radiotap_active_vap(vap))
824 ieee80211_radiotap_rx(vap, m);
828 * Finally, strip the 802.11 header.
830 m = ieee80211_decap(vap, m, hdrspace);
832 /* XXX mask bit to check for both */
833 /* don't count Null data frames as errors */
834 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
835 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
837 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
838 ni->ni_macaddr, "data", "%s", "decap error");
839 vap->iv_stats.is_rx_decap++;
840 IEEE80211_NODE_STAT(ni, rx_decap);
843 eh = mtod(m, struct ether_header *);
844 if (!ieee80211_node_is_authorized(ni)) {
846 * Deny any non-PAE frames received prior to
847 * authorization. For open/shared-key
848 * authentication the port is mark authorized
849 * after authentication completes. For 802.1x
850 * the port is not marked authorized by the
851 * authenticator until the handshake has completed.
853 if (eh->ether_type != htons(ETHERTYPE_PAE)) {
854 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
855 eh->ether_shost, "data",
856 "unauthorized port: ether type 0x%x len %u",
857 eh->ether_type, m->m_pkthdr.len);
858 vap->iv_stats.is_rx_unauth++;
859 IEEE80211_NODE_STAT(ni, rx_unauth);
864 * When denying unencrypted frames, discard
865 * any non-PAE frames received without encryption.
867 if ((vap->iv_flags & IEEE80211_F_DROPUNENC) &&
868 ((has_decrypted == 0) && (m->m_flags & M_WEP) == 0) &&
869 (is_hw_decrypted == 0) &&
870 eh->ether_type != htons(ETHERTYPE_PAE)) {
872 * Drop unencrypted frames.
874 vap->iv_stats.is_rx_unencrypted++;
875 IEEE80211_NODE_STAT(ni, rx_unencrypted);
879 /* XXX require HT? */
880 if (qos & IEEE80211_QOS_AMSDU) {
881 m = ieee80211_decap_amsdu(ni, m);
883 return IEEE80211_FC0_TYPE_DATA;
885 #ifdef IEEE80211_SUPPORT_SUPERG
886 m = ieee80211_decap_fastframe(vap, ni, m);
888 return IEEE80211_FC0_TYPE_DATA;
891 ieee80211_deliver_data(vap, ni, m);
892 return IEEE80211_FC0_TYPE_DATA;
894 case IEEE80211_FC0_TYPE_MGT:
895 vap->iv_stats.is_rx_mgmt++;
896 IEEE80211_NODE_STAT(ni, rx_mgmt);
897 if (dir != IEEE80211_FC1_DIR_NODS) {
898 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
899 wh, "data", "incorrect dir 0x%x", dir);
900 vap->iv_stats.is_rx_wrongdir++;
903 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
904 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
905 ni->ni_macaddr, "mgt", "too short: len %u",
907 vap->iv_stats.is_rx_tooshort++;
910 #ifdef IEEE80211_DEBUG
911 if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) ||
912 ieee80211_msg_dumppkts(vap)) {
913 if_printf(ifp, "received %s from %s rssi %d\n",
914 ieee80211_mgt_subtype_name(subtype),
915 ether_sprintf(wh->i_addr2), rssi);
920 * Note: See above for hardware offload privacy requirements.
921 * It also applies here.
925 * Again, having encrypted flag set check would be good, but
926 * then we have to also handle crypto_decap() like above.
928 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
929 if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) {
931 * Only shared key auth frames with a challenge
932 * should be encrypted, discard all others.
934 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
935 wh, ieee80211_mgt_subtype_name(subtype),
936 "%s", "WEP set but not permitted");
937 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
940 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
942 * Discard encrypted frames when privacy is off.
944 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
945 wh, "mgt", "%s", "WEP set but PRIVACY off");
946 vap->iv_stats.is_rx_noprivacy++;
949 hdrspace = ieee80211_hdrspace(ic, wh);
952 * Again, if IV/MIC was stripped, then this whole
953 * setup will fail. That's going to need some poking.
955 if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) {
956 /* NB: stats+msgs handled in crypto_decap */
960 wh = mtod(m, struct ieee80211_frame *);
961 wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED;
963 vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf);
966 case IEEE80211_FC0_TYPE_CTL:
967 vap->iv_stats.is_rx_ctl++;
968 IEEE80211_NODE_STAT(ni, rx_ctrl);
969 vap->iv_recv_ctl(ni, m, subtype);
973 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
974 wh, NULL, "bad frame type 0x%x", type);
975 /* should not come here */
979 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
982 if (need_tap && ieee80211_radiotap_active_vap(vap))
983 ieee80211_radiotap_rx(vap, m);
990 sta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh,
991 int rssi, int nf, uint16_t seq, uint16_t status)
993 struct ieee80211vap *vap = ni->ni_vap;
995 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) {
996 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
997 ni->ni_macaddr, "open auth",
998 "bad sta auth mode %u", ni->ni_authmode);
999 vap->iv_stats.is_rx_bad_auth++; /* XXX */
1002 if (vap->iv_state != IEEE80211_S_AUTH ||
1003 seq != IEEE80211_AUTH_OPEN_RESPONSE) {
1004 vap->iv_stats.is_rx_bad_auth++;
1008 IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH,
1009 ni, "open auth failed (reason %d)", status);
1010 vap->iv_stats.is_rx_auth_fail++;
1011 vap->iv_stats.is_rx_authfail_code = status;
1012 ieee80211_new_state(vap, IEEE80211_S_SCAN,
1013 IEEE80211_SCAN_FAIL_STATUS);
1015 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0);
1019 sta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh,
1020 uint8_t *frm, uint8_t *efrm, int rssi, int nf,
1021 uint16_t seq, uint16_t status)
1023 struct ieee80211vap *vap = ni->ni_vap;
1027 * NB: this can happen as we allow pre-shared key
1028 * authentication to be enabled w/o wep being turned
1029 * on so that configuration of these can be done
1030 * in any order. It may be better to enforce the
1031 * ordering in which case this check would just be
1032 * for sanity/consistency.
1034 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
1035 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1036 ni->ni_macaddr, "shared key auth",
1037 "%s", " PRIVACY is disabled");
1041 * Pre-shared key authentication is evil; accept
1042 * it only if explicitly configured (it is supported
1043 * mainly for compatibility with clients like OS X).
1045 if (ni->ni_authmode != IEEE80211_AUTH_AUTO &&
1046 ni->ni_authmode != IEEE80211_AUTH_SHARED) {
1047 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1048 ni->ni_macaddr, "shared key auth",
1049 "bad sta auth mode %u", ni->ni_authmode);
1050 vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */
1055 if (frm + 1 < efrm) {
1056 if ((frm[1] + 2) > (efrm - frm)) {
1057 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1058 ni->ni_macaddr, "shared key auth",
1059 "ie %d/%d too long",
1060 frm[0], (frm[1] + 2) - (efrm - frm));
1061 vap->iv_stats.is_rx_bad_auth++;
1064 if (*frm == IEEE80211_ELEMID_CHALLENGE)
1069 case IEEE80211_AUTH_SHARED_CHALLENGE:
1070 case IEEE80211_AUTH_SHARED_RESPONSE:
1071 if (challenge == NULL) {
1072 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1073 ni->ni_macaddr, "shared key auth",
1074 "%s", "no challenge");
1075 vap->iv_stats.is_rx_bad_auth++;
1078 if (challenge[1] != IEEE80211_CHALLENGE_LEN) {
1079 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1080 ni->ni_macaddr, "shared key auth",
1081 "bad challenge len %d", challenge[1]);
1082 vap->iv_stats.is_rx_bad_auth++;
1088 if (vap->iv_state != IEEE80211_S_AUTH)
1091 case IEEE80211_AUTH_SHARED_PASS:
1092 if (ni->ni_challenge != NULL) {
1093 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1094 ni->ni_challenge = NULL;
1097 IEEE80211_NOTE_FRAME(vap,
1098 IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh,
1099 "shared key auth failed (reason %d)", status);
1100 vap->iv_stats.is_rx_auth_fail++;
1101 vap->iv_stats.is_rx_authfail_code = status;
1104 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0);
1106 case IEEE80211_AUTH_SHARED_CHALLENGE:
1107 if (!ieee80211_alloc_challenge(ni))
1109 /* XXX could optimize by passing recvd challenge */
1110 memcpy(ni->ni_challenge, &challenge[2], challenge[1]);
1111 IEEE80211_SEND_MGMT(ni,
1112 IEEE80211_FC0_SUBTYPE_AUTH, seq + 1);
1115 IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH,
1116 wh, "shared key auth", "bad seq %d", seq);
1117 vap->iv_stats.is_rx_bad_auth++;
1123 * Kick the state machine. This short-circuits
1124 * using the mgt frame timeout to trigger the
1127 if (vap->iv_state == IEEE80211_S_AUTH)
1128 ieee80211_new_state(vap, IEEE80211_S_SCAN,
1129 IEEE80211_SCAN_FAIL_STATUS);
1133 ieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm,
1134 const struct ieee80211_frame *wh)
1136 #define MS(_v, _f) (((_v) & _f) >> _f##_S)
1137 struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme;
1138 u_int len = frm[1], qosinfo;
1141 if (len < sizeof(struct ieee80211_wme_param)-2) {
1142 IEEE80211_DISCARD_IE(vap,
1143 IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME,
1144 wh, "WME", "too short, len %u", len);
1147 qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)];
1148 qosinfo &= WME_QOSINFO_COUNT;
1149 /* XXX do proper check for wraparound */
1150 if (qosinfo == wme->wme_wmeChanParams.cap_info)
1152 frm += __offsetof(struct ieee80211_wme_param, params_acParams);
1153 for (i = 0; i < WME_NUM_AC; i++) {
1154 struct wmeParams *wmep =
1155 &wme->wme_wmeChanParams.cap_wmeParams[i];
1156 /* NB: ACI not used */
1157 wmep->wmep_acm = MS(frm[0], WME_PARAM_ACM);
1158 wmep->wmep_aifsn = MS(frm[0], WME_PARAM_AIFSN);
1159 wmep->wmep_logcwmin = MS(frm[1], WME_PARAM_LOGCWMIN);
1160 wmep->wmep_logcwmax = MS(frm[1], WME_PARAM_LOGCWMAX);
1161 wmep->wmep_txopLimit = le16dec(frm+2);
1164 wme->wme_wmeChanParams.cap_info = qosinfo;
1170 * Process 11h Channel Switch Announcement (CSA) ie. If this
1171 * is the first CSA then initiate the switch. Otherwise we
1172 * track state and trigger completion and/or cancel of the switch.
1173 * XXX should be public for IBSS use
1176 ieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm,
1177 const struct ieee80211_frame *wh)
1179 struct ieee80211com *ic = vap->iv_ic;
1180 const struct ieee80211_csa_ie *csa =
1181 (const struct ieee80211_csa_ie *) frm;
1183 KASSERT(vap->iv_state >= IEEE80211_S_RUN,
1184 ("state %s", ieee80211_state_name[vap->iv_state]));
1186 if (csa->csa_mode > 1) {
1187 IEEE80211_DISCARD_IE(vap,
1188 IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH,
1189 wh, "CSA", "invalid mode %u", csa->csa_mode);
1193 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
1195 * Convert the channel number to a channel reference. We
1196 * try first to preserve turbo attribute of the current
1197 * channel then fallback. Note this will not work if the
1198 * CSA specifies a channel that requires a band switch (e.g.
1199 * 11a => 11g). This is intentional as 11h is defined only
1200 * for 5GHz/11a and because the switch does not involve a
1201 * reassociation, protocol state (capabilities, negotated
1202 * rates, etc) may/will be wrong.
1204 struct ieee80211_channel *c =
1205 ieee80211_find_channel_byieee(ic, csa->csa_newchan,
1206 (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO));
1208 c = ieee80211_find_channel_byieee(ic,
1210 (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL));
1212 IEEE80211_DISCARD_IE(vap,
1213 IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH,
1214 wh, "CSA", "invalid channel %u",
1219 #if IEEE80211_CSA_COUNT_MIN > 0
1220 if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) {
1222 * Require at least IEEE80211_CSA_COUNT_MIN count to
1223 * reduce the risk of being redirected by a fabricated
1224 * CSA. If a valid CSA is dropped we'll still get a
1225 * beacon miss when the AP leaves the channel so we'll
1226 * eventually follow to the new channel.
1228 * NOTE: this violates the 11h spec that states that
1229 * count may be any value and if 0 then a switch
1230 * should happen asap.
1232 IEEE80211_DISCARD_IE(vap,
1233 IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH,
1234 wh, "CSA", "count %u too small, must be >= %u",
1235 csa->csa_count, IEEE80211_CSA_COUNT_MIN);
1239 ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count);
1242 * Validate this ie against the initial CSA. We require
1243 * mode and channel not change and the count must be
1244 * monotonically decreasing. This may be pointless and
1245 * canceling the switch as a result may be too paranoid but
1246 * in the worst case if we drop out of CSA because of this
1247 * and the AP does move then we'll just end up taking a
1248 * beacon miss and scan to find the AP.
1250 * XXX may want <= on count as we also process ProbeResp
1251 * frames and those may come in w/ the same count as the
1252 * previous beacon; but doing so leaves us open to a stuck
1253 * count until we add a dead-man timer
1255 if (!(csa->csa_count < ic->ic_csa_count &&
1256 csa->csa_mode == ic->ic_csa_mode &&
1257 csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) {
1258 IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh,
1259 "CSA ie mismatch, initial ie <%d,%d,%d>, "
1260 "this ie <%d,%d,%d>", ic->ic_csa_mode,
1261 ic->ic_csa_newchan, ic->ic_csa_count,
1262 csa->csa_mode, csa->csa_newchan, csa->csa_count);
1263 ieee80211_csa_cancelswitch(ic);
1265 if (csa->csa_count <= 1)
1266 ieee80211_csa_completeswitch(ic);
1268 ic->ic_csa_count = csa->csa_count;
1272 IEEE80211_UNLOCK(ic);
1276 * Return non-zero if a background scan may be continued:
1277 * o bg scan is active
1278 * o no channel switch is pending
1279 * o there has not been any traffic recently
1280 * o no full-offload scan support (no need for explicitly continuing scan then)
1282 * Note we do not check if there is an administrative enable;
1283 * this is only done to start the scan. We assume that any
1284 * change in state will be accompanied by a request to cancel
1285 * active scans which will otherwise cause this test to fail.
1288 contbgscan(struct ieee80211vap *vap)
1290 struct ieee80211com *ic = vap->iv_ic;
1292 return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) &&
1293 (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 &&
1294 !(vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) &&
1295 vap->iv_state == IEEE80211_S_RUN && /* XXX? */
1296 ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle));
1300 * Return non-zero if a backgrond scan may be started:
1301 * o bg scanning is administratively enabled
1302 * o no channel switch is pending
1303 * o we are not boosted on a dynamic turbo channel
1304 * o there has not been a scan recently
1305 * o there has not been any traffic recently (don't check if full-offload scan)
1308 startbgscan(struct ieee80211vap *vap)
1310 struct ieee80211com *ic = vap->iv_ic;
1312 return ((vap->iv_flags & IEEE80211_F_BGSCAN) &&
1313 (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 &&
1314 #ifdef IEEE80211_SUPPORT_SUPERG
1315 !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) &&
1317 ieee80211_time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) &&
1318 ((vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) ||
1319 ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)));
1324 * Compare two quiet IEs and return if they are equivalent.
1326 * The tbttcount isnt checked - that's not part of the configuration.
1329 compare_quiet_ie(const struct ieee80211_quiet_ie *q1,
1330 const struct ieee80211_quiet_ie *q2)
1333 if (q1->period != q2->period)
1335 if (le16dec(&q1->duration) != le16dec(&q2->duration))
1337 if (le16dec(&q1->offset) != le16dec(&q2->offset))
1344 sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
1345 const struct ieee80211_rx_stats *rxs,
1348 #define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP)
1349 struct ieee80211vap *vap = ni->ni_vap;
1350 struct ieee80211com *ic = ni->ni_ic;
1351 struct ieee80211_channel *rxchan = ic->ic_curchan;
1352 struct ieee80211_frame *wh;
1353 uint8_t *frm, *efrm;
1354 uint8_t *rates, *xrates, *wme, *htcap, *htinfo;
1355 uint8_t *vhtcap, *vhtopmode;
1357 int ht_state_change = 0, do_ht = 0;
1359 wh = mtod(m0, struct ieee80211_frame *);
1360 frm = (uint8_t *)&wh[1];
1361 efrm = mtod(m0, uint8_t *) + m0->m_len;
1363 case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
1364 case IEEE80211_FC0_SUBTYPE_BEACON: {
1365 struct ieee80211_scanparams scan;
1366 struct ieee80211_channel *c;
1368 * We process beacon/probe response frames:
1369 * o when scanning, or
1370 * o station mode when associated (to collect state
1371 * updates such as 802.11g slot time)
1372 * Frames otherwise received are discarded.
1374 if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) {
1375 vap->iv_stats.is_rx_mgtdiscard++;
1379 /* Override RX channel as appropriate */
1381 c = ieee80211_lookup_channel_rxstatus(vap, rxs);
1386 /* XXX probe response in sta mode when !scanning? */
1387 if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) {
1388 if (! (ic->ic_flags & IEEE80211_F_SCAN))
1389 vap->iv_stats.is_beacon_bad++;
1394 * Count frame now that we know it's to be processed.
1396 if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
1397 vap->iv_stats.is_rx_beacon++; /* XXX remove */
1398 IEEE80211_NODE_STAT(ni, rx_beacons);
1400 IEEE80211_NODE_STAT(ni, rx_proberesp);
1402 * When operating in station mode, check for state updates.
1403 * Be careful to ignore beacons received while doing a
1404 * background scan. We consider only 11g/WMM stuff right now.
1406 if (ni->ni_associd != 0 &&
1407 ((ic->ic_flags & IEEE80211_F_SCAN) == 0 ||
1408 IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) {
1409 /* record tsf of last beacon */
1410 memcpy(ni->ni_tstamp.data, scan.tstamp,
1411 sizeof(ni->ni_tstamp));
1412 /* count beacon frame for s/w bmiss handling */
1413 vap->iv_swbmiss_count++;
1414 vap->iv_bmiss_count = 0;
1415 if (ni->ni_erp != scan.erp) {
1416 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC,
1418 "erp change: was 0x%x, now 0x%x",
1419 ni->ni_erp, scan.erp);
1420 if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
1421 (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION))
1422 ic->ic_flags |= IEEE80211_F_USEPROT;
1424 ic->ic_flags &= ~IEEE80211_F_USEPROT;
1425 ni->ni_erp = scan.erp;
1427 /* XXX driver notification */
1429 if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) {
1430 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC,
1432 "capabilities change: was 0x%x, now 0x%x",
1433 ni->ni_capinfo, scan.capinfo);
1435 * NB: we assume short preamble doesn't
1436 * change dynamically
1438 ieee80211_set_shortslottime(ic,
1439 IEEE80211_IS_CHAN_A(ic->ic_bsschan) ||
1440 (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME));
1441 ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME)
1442 | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME);
1445 if (scan.wme != NULL &&
1446 (ni->ni_flags & IEEE80211_NODE_QOS) &&
1447 ieee80211_parse_wmeparams(vap, scan.wme, wh) > 0)
1448 ieee80211_wme_updateparams(vap);
1449 #ifdef IEEE80211_SUPPORT_SUPERG
1450 if (scan.ath != NULL)
1451 ieee80211_parse_athparams(ni, scan.ath, wh);
1453 if (scan.htcap != NULL && scan.htinfo != NULL &&
1454 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1455 /* XXX state changes? */
1456 ieee80211_ht_updateparams(ni,
1457 scan.htcap, scan.htinfo);
1460 if (scan.vhtcap != NULL && scan.vhtopmode != NULL &&
1461 (vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1462 /* XXX state changes? */
1463 ieee80211_vht_updateparams(ni,
1464 scan.vhtcap, scan.vhtopmode);
1468 if (ieee80211_ht_updateparams_final(ni,
1469 scan.htcap, scan.htinfo))
1470 ht_state_change = 1;
1474 * If we have a quiet time IE then report it up to
1477 * Otherwise, inform the driver that the quiet time
1478 * IE has disappeared - only do that once rather than
1479 * spamming it each time.
1482 ic->ic_set_quiet(ni, scan.quiet);
1483 ni->ni_quiet_ie_set = 1;
1484 memcpy(&ni->ni_quiet_ie, scan.quiet,
1485 sizeof(struct ieee80211_quiet_ie));
1487 if (ni->ni_quiet_ie_set == 1)
1488 ic->ic_set_quiet(ni, NULL);
1489 ni->ni_quiet_ie_set = 0;
1490 bzero(&ni->ni_quiet_ie,
1491 sizeof(struct ieee80211_quiet_ie));
1494 if (scan.tim != NULL) {
1495 struct ieee80211_tim_ie *tim =
1496 (struct ieee80211_tim_ie *) scan.tim;
1498 * XXX Check/debug this code; see if it's about
1499 * the right time to force the VAP awake if we
1500 * receive a frame destined for us?
1502 int aid = IEEE80211_AID(ni->ni_associd);
1503 int ix = aid / NBBY;
1504 int min = tim->tim_bitctl &~ 1;
1505 int max = tim->tim_len + min - 4;
1506 int tim_ucast = 0, tim_mcast = 0;
1509 * Only do this for unicast traffic in the TIM
1510 * The multicast traffic notification for
1511 * the scan notification stuff should occur
1514 if (min <= ix && ix <= max &&
1515 isset(tim->tim_bitmap - min, aid)) {
1520 * Do a separate notification
1521 * for the multicast bit being set.
1523 if (tim->tim_bitctl & 1) {
1528 * If the TIM indicates there's traffic for
1529 * us then get us out of STA mode powersave.
1531 if (tim_ucast == 1) {
1534 * Wake us out of SLEEP state if we're
1535 * in it; and if we're doing bgscan
1536 * then wake us out of STA powersave.
1538 ieee80211_sta_tim_notify(vap, 1);
1541 * This is preventing us from
1542 * continuing a bgscan; because it
1543 * tricks the contbgscan()
1544 * routine to think there's always
1547 * I think we need both an RX and
1548 * TX ic_lastdata field.
1550 ic->ic_lastdata = ticks;
1553 ni->ni_dtim_count = tim->tim_count;
1554 ni->ni_dtim_period = tim->tim_period;
1556 if (scan.csa != NULL &&
1557 (vap->iv_flags & IEEE80211_F_DOTH))
1558 ieee80211_parse_csaparams(vap, scan.csa, wh);
1559 else if (ic->ic_flags & IEEE80211_F_CSAPENDING) {
1561 * No CSA ie or 11h disabled, but a channel
1562 * switch is pending; drop out so we aren't
1563 * stuck in CSA state. If the AP really is
1564 * moving we'll get a beacon miss and scan.
1567 ieee80211_csa_cancelswitch(ic);
1568 IEEE80211_UNLOCK(ic);
1571 * If scanning, pass the info to the scan module.
1572 * Otherwise, check if it's the right time to do
1573 * a background scan. Background scanning must
1574 * be enabled and we must not be operating in the
1575 * turbo phase of dynamic turbo mode. Then,
1576 * it's been a while since the last background
1577 * scan and if no data frames have come through
1578 * recently, kick off a scan. Note that this
1579 * is the mechanism by which a background scan
1580 * is started _and_ continued each time we
1581 * return on-channel to receive a beacon from
1584 if (ic->ic_flags & IEEE80211_F_SCAN) {
1585 ieee80211_add_scan(vap, rxchan,
1586 &scan, wh, subtype, rssi, nf);
1587 } else if (contbgscan(vap)) {
1588 ieee80211_bg_scan(vap, 0);
1589 } else if (startbgscan(vap)) {
1590 vap->iv_stats.is_scan_bg++;
1592 /* wakeup if we are sleeing */
1593 ieee80211_set_pwrsave(vap, 0);
1595 ieee80211_bg_scan(vap, 0);
1599 * Put the station to sleep if we haven't seen
1600 * traffic in a while.
1603 ieee80211_sta_ps_timer_check(vap);
1604 IEEE80211_UNLOCK(ic);
1607 * If we've had a channel width change (eg HT20<->HT40)
1608 * then schedule a delayed driver notification.
1610 if (ht_state_change)
1611 ieee80211_update_chw(ic);
1615 * If scanning, just pass information to the scan module.
1617 if (ic->ic_flags & IEEE80211_F_SCAN) {
1618 if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) {
1620 * Actively scanning a channel marked passive;
1621 * send a probe request now that we know there
1622 * is 802.11 traffic present.
1624 * XXX check if the beacon we recv'd gives
1625 * us what we need and suppress the probe req
1627 ieee80211_probe_curchan(vap, 1);
1628 ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN;
1630 ieee80211_add_scan(vap, rxchan, &scan, wh,
1637 case IEEE80211_FC0_SUBTYPE_AUTH: {
1638 uint16_t algo, seq, status;
1646 IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return);
1647 algo = le16toh(*(uint16_t *)frm);
1648 seq = le16toh(*(uint16_t *)(frm + 2));
1649 status = le16toh(*(uint16_t *)(frm + 4));
1650 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2,
1651 "recv auth frame with algorithm %d seq %d", algo, seq);
1653 if (vap->iv_flags & IEEE80211_F_COUNTERM) {
1654 IEEE80211_DISCARD(vap,
1655 IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO,
1656 wh, "auth", "%s", "TKIP countermeasures enabled");
1657 vap->iv_stats.is_rx_auth_countermeasures++;
1658 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
1659 ieee80211_send_error(ni, wh->i_addr2,
1660 IEEE80211_FC0_SUBTYPE_AUTH,
1661 IEEE80211_REASON_MIC_FAILURE);
1665 if (algo == IEEE80211_AUTH_ALG_SHARED)
1666 sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf,
1668 else if (algo == IEEE80211_AUTH_ALG_OPEN)
1669 sta_auth_open(ni, wh, rssi, nf, seq, status);
1671 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1672 wh, "auth", "unsupported alg %d", algo);
1673 vap->iv_stats.is_rx_auth_unsupported++;
1679 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
1680 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: {
1681 uint16_t capinfo, associd;
1684 if (vap->iv_state != IEEE80211_S_ASSOC) {
1685 vap->iv_stats.is_rx_mgtdiscard++;
1690 * asresp frame format
1691 * [2] capability information
1693 * [2] association ID
1694 * [tlv] supported rates
1695 * [tlv] extended supported rates
1697 * [tlv] HT capabilities
1700 IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return);
1702 capinfo = le16toh(*(uint16_t *)frm);
1704 status = le16toh(*(uint16_t *)frm);
1707 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC,
1708 wh->i_addr2, "%sassoc failed (reason %d)",
1709 ISREASSOC(subtype) ? "re" : "", status);
1710 vap->iv_stats.is_rx_auth_fail++; /* XXX */
1713 associd = le16toh(*(uint16_t *)frm);
1716 rates = xrates = wme = htcap = htinfo = NULL;
1717 vhtcap = vhtopmode = NULL;
1718 while (efrm - frm > 1) {
1719 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1721 case IEEE80211_ELEMID_RATES:
1724 case IEEE80211_ELEMID_XRATES:
1727 case IEEE80211_ELEMID_HTCAP:
1730 case IEEE80211_ELEMID_HTINFO:
1733 case IEEE80211_ELEMID_VENDOR:
1736 else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) {
1738 * Accept pre-draft HT ie's if the
1739 * standard ones have not been seen.
1741 if (ishtcapoui(frm)) {
1744 } else if (ishtinfooui(frm)) {
1749 /* XXX Atheros OUI support */
1751 case IEEE80211_ELEMID_VHT_CAP:
1754 case IEEE80211_ELEMID_VHT_OPMODE:
1761 IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
1763 IEEE80211_VERIFY_ELEMENT(xrates,
1764 IEEE80211_RATE_MAXSIZE - rates[1], return);
1765 rate = ieee80211_setup_rates(ni, rates, xrates,
1767 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1768 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1769 if (rate & IEEE80211_RATE_BASIC) {
1770 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC,
1772 "%sassoc failed (rate set mismatch)",
1773 ISREASSOC(subtype) ? "re" : "");
1774 vap->iv_stats.is_rx_assoc_norate++;
1775 ieee80211_new_state(vap, IEEE80211_S_SCAN,
1776 IEEE80211_SCAN_FAIL_STATUS);
1780 ni->ni_capinfo = capinfo;
1781 ni->ni_associd = associd;
1782 if (ni->ni_jointime == 0)
1783 ni->ni_jointime = time_uptime;
1785 ieee80211_parse_wmeparams(vap, wme, wh) >= 0) {
1786 ni->ni_flags |= IEEE80211_NODE_QOS;
1787 ieee80211_wme_updateparams(vap);
1789 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1791 * Setup HT state according to the negotiation.
1793 * NB: shouldn't need to check if HT use is enabled but some
1794 * ap's send back HT ie's even when we don't indicate we
1795 * are HT capable in our AssocReq.
1797 if (htcap != NULL && htinfo != NULL &&
1798 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1799 ieee80211_ht_node_init(ni);
1800 ieee80211_ht_updateparams(ni, htcap, htinfo);
1802 if ((vhtcap != NULL) && (vhtopmode != NULL) &
1803 (vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1805 * Log if we get a VHT assoc/reassoc response.
1806 * We aren't ready for 2GHz VHT support.
1808 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1809 printf("%s: peer %6D: VHT on 2GHz, ignoring\n",
1814 ieee80211_vht_node_init(ni);
1815 ieee80211_vht_updateparams(ni, vhtcap, vhtopmode);
1816 ieee80211_setup_vht_rates(ni, vhtcap, vhtopmode);
1820 ieee80211_ht_updateparams_final(ni, htcap, htinfo);
1821 ieee80211_setup_htrates(ni, htcap,
1822 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1823 ieee80211_setup_basic_htrates(ni, htinfo);
1825 ieee80211_node_setuptxparms(ni);
1826 ieee80211_ratectl_node_init(ni);
1830 * Always initialise FF/superg state; we can use this
1831 * for doing A-MSDU encapsulation as well.
1833 #ifdef IEEE80211_SUPPORT_SUPERG
1834 ieee80211_ff_node_init(ni);
1838 * Configure state now that we are associated.
1840 * XXX may need different/additional driver callbacks?
1842 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
1843 (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) {
1844 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
1845 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
1847 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
1848 ic->ic_flags |= IEEE80211_F_USEBARKER;
1850 ieee80211_set_shortslottime(ic,
1851 IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
1852 (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME));
1854 * Honor ERP protection.
1856 * NB: ni_erp should zero for non-11g operation.
1858 if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
1859 (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION))
1860 ic->ic_flags |= IEEE80211_F_USEPROT;
1862 ic->ic_flags &= ~IEEE80211_F_USEPROT;
1863 IEEE80211_NOTE_MAC(vap,
1864 IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2,
1865 "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
1866 ISREASSOC(subtype) ? "re" : "",
1867 IEEE80211_NODE_AID(ni),
1868 ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
1869 ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
1870 ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "",
1871 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
1872 ni->ni_flags & IEEE80211_NODE_HT ?
1873 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
1874 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
1875 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
1876 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
1877 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
1878 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
1879 ", fast-frames" : "",
1880 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
1883 ieee80211_new_state(vap, IEEE80211_S_RUN, subtype);
1887 case IEEE80211_FC0_SUBTYPE_DEAUTH: {
1890 if (vap->iv_state == IEEE80211_S_SCAN) {
1891 vap->iv_stats.is_rx_mgtdiscard++;
1894 if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) {
1895 /* NB: can happen when in promiscuous mode */
1896 vap->iv_stats.is_rx_mgtdiscard++;
1901 * deauth frame format
1904 IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return);
1905 reason = le16toh(*(uint16_t *)frm);
1907 vap->iv_stats.is_rx_deauth++;
1908 vap->iv_stats.is_rx_deauth_code = reason;
1909 IEEE80211_NODE_STAT(ni, rx_deauth);
1911 IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni,
1912 "recv deauthenticate (reason: %d (%s))", reason,
1913 ieee80211_reason_to_string(reason));
1914 ieee80211_new_state(vap, IEEE80211_S_AUTH,
1915 (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH);
1919 case IEEE80211_FC0_SUBTYPE_DISASSOC: {
1922 if (vap->iv_state != IEEE80211_S_RUN &&
1923 vap->iv_state != IEEE80211_S_ASSOC &&
1924 vap->iv_state != IEEE80211_S_AUTH) {
1925 vap->iv_stats.is_rx_mgtdiscard++;
1928 if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) {
1929 /* NB: can happen when in promiscuous mode */
1930 vap->iv_stats.is_rx_mgtdiscard++;
1935 * disassoc frame format
1938 IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return);
1939 reason = le16toh(*(uint16_t *)frm);
1941 vap->iv_stats.is_rx_disassoc++;
1942 vap->iv_stats.is_rx_disassoc_code = reason;
1943 IEEE80211_NODE_STAT(ni, rx_disassoc);
1945 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
1946 "recv disassociate (reason: %d (%s))", reason,
1947 ieee80211_reason_to_string(reason));
1948 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0);
1952 case IEEE80211_FC0_SUBTYPE_ACTION:
1953 case IEEE80211_FC0_SUBTYPE_ACTION_NOACK:
1954 if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) &&
1955 !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1956 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1957 wh, NULL, "%s", "not for us");
1958 vap->iv_stats.is_rx_mgtdiscard++;
1959 } else if (vap->iv_state != IEEE80211_S_RUN) {
1960 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1961 wh, NULL, "wrong state %s",
1962 ieee80211_state_name[vap->iv_state]);
1963 vap->iv_stats.is_rx_mgtdiscard++;
1965 if (ieee80211_parse_action(ni, m0) == 0)
1966 (void)ic->ic_recv_action(ni, wh, frm, efrm);
1970 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
1971 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
1972 case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
1973 case IEEE80211_FC0_SUBTYPE_TIMING_ADV:
1974 case IEEE80211_FC0_SUBTYPE_ATIM:
1975 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
1976 wh, NULL, "%s", "not handled");
1977 vap->iv_stats.is_rx_mgtdiscard++;
1981 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1982 wh, "mgt", "subtype 0x%x not handled", subtype);
1983 vap->iv_stats.is_rx_badsubtype++;
1990 sta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype)
1993 case IEEE80211_FC0_SUBTYPE_BAR:
1994 ieee80211_recv_bar(ni, m);