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.
25 * $FreeBSD: head/sys/net80211/ieee80211_wds.c 203422 2010-02-03 10:07:43Z rpaulo $
29 * IEEE 802.11 WDS mode support.
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
40 #include <sys/socket.h>
41 #include <sys/sockio.h>
42 #include <sys/endian.h>
43 #include <sys/errno.h>
45 #include <sys/sysctl.h>
48 #include <net/if_media.h>
49 #include <net/if_llc.h>
50 #include <net/ethernet.h>
51 #include <net/route.h>
55 #include <netproto/802_11/ieee80211_var.h>
56 #include <netproto/802_11/ieee80211_wds.h>
57 #include <netproto/802_11/ieee80211_input.h>
58 #ifdef IEEE80211_SUPPORT_SUPERG
59 #include <netproto/802_11/ieee80211_superg.h>
62 static void wds_vattach(struct ieee80211vap *);
63 static int wds_newstate(struct ieee80211vap *, enum ieee80211_state, int);
64 static int wds_input(struct ieee80211_node *ni, struct mbuf *m, int, int);
65 static void wds_recv_mgmt(struct ieee80211_node *, struct mbuf *,
66 int subtype, int, int);
69 ieee80211_wds_attach(struct ieee80211com *ic)
71 ic->ic_vattach[IEEE80211_M_WDS] = wds_vattach;
75 ieee80211_wds_detach(struct ieee80211com *ic)
80 wds_vdetach(struct ieee80211vap *vap)
82 if (vap->iv_bss != NULL) {
84 if (vap->iv_bss->ni_wdsvap == vap)
85 vap->iv_bss->ni_wdsvap = NULL;
90 wds_vattach(struct ieee80211vap *vap)
92 vap->iv_newstate = wds_newstate;
93 vap->iv_input = wds_input;
94 vap->iv_recv_mgmt = wds_recv_mgmt;
95 vap->iv_opdetach = wds_vdetach;
99 wds_flush(struct ieee80211_node *ni)
101 struct ieee80211com *ic = ni->ni_ic;
102 struct mbuf *m, *next;
105 m = ieee80211_ageq_remove(&ic->ic_stageq,
106 (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr));
110 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_WDS, ni,
111 "%s", "flush wds queue");
112 ic->ic_node_getsignal(ni, &rssi, &nf);
113 for (; m != NULL; m = next) {
116 ieee80211_input(ni, m, rssi, nf);
121 ieee80211_create_wds(struct ieee80211vap *vap, struct ieee80211_channel *chan)
123 struct ieee80211com *ic = vap->iv_ic;
124 /* struct ieee80211_node_table *nt = &ic->ic_sta;*/
125 struct ieee80211_node *ni, *obss;
127 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
128 "%s: creating link to %6D on channel %u\n", __func__,
129 vap->iv_des_bssid, ":", ieee80211_chan2ieee(ic, chan));
131 /* NB: vap create must specify the bssid for the link */
132 KASSERT(vap->iv_flags & IEEE80211_F_DESBSSID, ("no bssid"));
133 /* NB: we should only be called on RUN transition */
134 KASSERT(vap->iv_state == IEEE80211_S_RUN, ("!RUN state"));
136 if ((vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) == 0) {
138 * Dynamic/non-legacy WDS. Reference the associated
139 * station specified by the desired bssid setup at vap
140 * create. Point ni_wdsvap at the WDS vap so 4-address
141 * frames received through the associated AP vap will
142 * be dispatched upward (e.g. to a bridge) as though
143 * they arrived on the WDS vap.
146 ni = ieee80211_find_node_locked(&ic->ic_sta, vap->iv_des_bssid);
149 * Node went away before we could hookup. This
150 * should be ok; no traffic will flow and a leave
151 * event will be dispatched that should cause
152 * the vap to be destroyed.
154 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
155 "%s: station %6D went away\n",
156 __func__, vap->iv_des_bssid, ":");
158 } else if (ni->ni_wdsvap != NULL) {
160 * Node already setup with a WDS vap; we cannot
161 * allow multiple references so disallow. If
162 * ni_wdsvap points at us that's ok; we should
165 /* XXX printf instead? */
166 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
167 "%s: station %6D in use with %s\n",
168 __func__, vap->iv_des_bssid, ":",
169 ni->ni_wdsvap->iv_ifp->if_xname);
173 * Committed to new node, setup state.
180 /* NB: deferred to avoid recursive lock */
181 ieee80211_free_node(obss);
185 * Legacy WDS vap setup.
188 * The far end does not associate so we just create
189 * create a new node and install it as the vap's
190 * bss node. We must simulate an association and
191 * authorize the port for traffic to flow.
192 * XXX check if node already in sta table?
194 ni = ieee80211_node_create_wds(vap, vap->iv_des_bssid, chan);
197 vap->iv_bss = ieee80211_ref_node(ni);
198 ni->ni_flags |= IEEE80211_NODE_AREF;
200 ieee80211_free_node(obss);
201 /* give driver a chance to setup state like ni_txrate */
202 if (ic->ic_newassoc != NULL)
203 ic->ic_newassoc(ni, 1);
204 /* tell the authenticator about new station */
205 if (vap->iv_auth->ia_node_join != NULL)
206 vap->iv_auth->ia_node_join(ni);
207 if (ni->ni_authmode != IEEE80211_AUTH_8021X)
208 ieee80211_node_authorize(ni);
210 ieee80211_notify_node_join(ni, 1 /*newassoc*/);
211 /* XXX inject l2uf frame */
216 * Flush any pending frames now that were setup.
220 return (ni == NULL ? ENOENT : 0);
224 * Propagate multicast frames of an ap vap to all DWDS links.
225 * The caller is assumed to have verified this frame is multicast.
228 ieee80211_dwds_mcast(struct ieee80211vap *vap0, struct mbuf *m)
230 struct ieee80211com *ic = vap0->iv_ic;
231 struct ifnet *parent = ic->ic_ifp;
232 const struct ether_header *eh = mtod(m, const struct ether_header *);
233 struct ieee80211_node *ni;
234 struct ieee80211vap *vap;
239 KASSERT(ETHER_IS_MULTICAST(eh->ether_dhost),
240 ("%6D not mcast", eh->ether_dhost, ":"));
243 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
244 /* only DWDS vaps are interesting */
245 if (vap->iv_opmode != IEEE80211_M_WDS ||
246 (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY))
248 /* if it came in this interface, don't send it back out */
250 if (ifp == m->m_pkthdr.rcvif)
253 * Duplicate the frame and send it.
255 mcopy = m_copypacket(m, MB_DONTWAIT);
261 ni = ieee80211_find_txnode(vap, eh->ether_dhost);
263 /* NB: ieee80211_find_txnode does stat+msg */
268 /* calculate priority so drivers can find the tx queue */
269 if (ieee80211_classify(ni, mcopy)) {
270 IEEE80211_DISCARD_MAC(vap,
271 IEEE80211_MSG_OUTPUT | IEEE80211_MSG_WDS,
272 eh->ether_dhost, NULL,
273 "%s", "classification failure");
274 vap->iv_stats.is_tx_classify++;
277 ieee80211_free_node(ni);
281 BPF_MTAP(ifp, m); /* 802.3 tx */
284 * Encapsulate the packet in prep for transmission.
286 mcopy = ieee80211_encap(vap, ni, mcopy);
288 /* NB: stat+msg handled in ieee80211_encap */
289 ieee80211_free_node(ni);
292 mcopy->m_flags |= M_MCAST;
293 mcopy->m_pkthdr.rcvif = (void *) ni;
295 err = ieee80211_handoff(parent, mcopy);
297 /* NB: IFQ_HANDOFF reclaims mbuf */
299 ieee80211_free_node(ni);
306 * Handle DWDS discovery on receipt of a 4-address frame in
307 * ap mode. Queue the frame and post an event for someone
308 * to plumb the necessary WDS vap for this station. Frames
309 * received prior to the vap set running will then be reprocessed
310 * as if they were just received.
313 ieee80211_dwds_discover(struct ieee80211_node *ni, struct mbuf *m)
315 struct ieee80211com *ic = ni->ni_ic;
318 * Save the frame with an aging interval 4 times
319 * the listen interval specified by the station.
320 * Frames that sit around too long are reclaimed
321 * using this information.
322 * XXX handle overflow?
323 * XXX per/vap beacon interval?
325 m->m_pkthdr.rcvif = (void *)(uintptr_t)
326 ieee80211_mac_hash(ic, ni->ni_macaddr);
327 (void) ieee80211_ageq_append(&ic->ic_stageq, m,
328 ((ni->ni_intval * ic->ic_lintval) << 2) / 1024);
329 ieee80211_notify_wds_discover(ni);
333 * IEEE80211_M_WDS vap state machine handler.
336 wds_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
338 struct ieee80211com *ic = vap->iv_ic;
339 struct ieee80211_node *ni;
340 enum ieee80211_state ostate;
343 ostate = vap->iv_state;
344 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
345 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
346 vap->iv_state = nstate; /* state transition */
347 callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */
348 if (ostate != IEEE80211_S_SCAN)
349 ieee80211_cancel_scan(vap); /* background scan */
350 ni = vap->iv_bss; /* NB: no reference held */
353 case IEEE80211_S_INIT:
355 case IEEE80211_S_SCAN:
356 ieee80211_cancel_scan(vap);
361 if (ostate != IEEE80211_S_INIT) {
362 /* NB: optimize INIT -> INIT case */
363 ieee80211_reset_bss(vap);
366 case IEEE80211_S_SCAN:
368 case IEEE80211_S_INIT:
369 ieee80211_check_scan_current(vap);
375 case IEEE80211_S_RUN:
376 if (ostate == IEEE80211_S_INIT) {
378 * Already have a channel; bypass the scan
379 * and startup immediately.
381 error = ieee80211_create_wds(vap, ic->ic_curchan);
391 * Process a received frame. The node associated with the sender
392 * should be supplied. If nothing was found in the node table then
393 * the caller is assumed to supply a reference to iv_bss instead.
394 * The RSSI and a timestamp are also supplied. The RSSI data is used
395 * during AP scanning to select a AP to associate with; it can have
396 * any units so long as values have consistent units and higher values
397 * mean ``better signal''. The receive timestamp is currently not used
398 * by the 802.11 layer.
401 wds_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
403 #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
404 #define HAS_SEQ(type) ((type & 0x4) == 0)
405 struct ieee80211vap *vap = ni->ni_vap;
406 struct ieee80211com *ic = ni->ni_ic;
407 struct ifnet *ifp = vap->iv_ifp;
408 struct ieee80211_frame *wh;
409 struct ieee80211_key *key;
410 struct ether_header *eh;
411 int hdrspace, need_tap = 1; /* mbuf need to be tapped. */
412 uint8_t dir, type, subtype, qos;
415 if (m->m_flags & M_AMPDU_MPDU) {
417 * Fastpath for A-MPDU reorder q resubmission. Frames
418 * w/ M_AMPDU_MPDU marked have already passed through
419 * here but were received out of order and been held on
420 * the reorder queue. When resubmitted they are marked
421 * with the M_AMPDU_MPDU flag and we can bypass most of
422 * the normal processing.
424 wh = mtod(m, struct ieee80211_frame *);
425 type = IEEE80211_FC0_TYPE_DATA;
426 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
427 subtype = IEEE80211_FC0_SUBTYPE_QOS;
428 hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */
432 KASSERT(ni != NULL, ("null node"));
434 type = -1; /* undefined */
436 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
437 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
438 ni->ni_macaddr, NULL,
439 "too short (1): len %u", m->m_pkthdr.len);
440 vap->iv_stats.is_rx_tooshort++;
444 * Bit of a cheat here, we use a pointer for a 3-address
445 * frame format but don't reference fields past outside
446 * ieee80211_frame_min w/o first validating the data is
449 wh = mtod(m, struct ieee80211_frame *);
451 if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
452 IEEE80211_FC0_VERSION_0) {
453 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
454 ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x",
455 wh->i_fc[0], wh->i_fc[1]);
456 vap->iv_stats.is_rx_badversion++;
460 dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
461 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
462 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
464 /* NB: WDS vap's do not scan */
465 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_addr4)) {
466 IEEE80211_DISCARD_MAC(vap,
467 IEEE80211_MSG_ANY, ni->ni_macaddr, NULL,
468 "too short (3): len %u", m->m_pkthdr.len);
469 vap->iv_stats.is_rx_tooshort++;
472 /* NB: the TA is implicitly verified by finding the wds peer node */
473 if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr) &&
474 !IEEE80211_ADDR_EQ(wh->i_addr1, ifp->if_broadcastaddr)) {
475 /* not interested in */
476 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
477 wh->i_addr1, NULL, "%s", "not to bss");
478 vap->iv_stats.is_rx_wrongbss++;
481 IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
484 uint8_t tid = ieee80211_gettid(wh);
485 if (IEEE80211_QOS_HAS_SEQ(wh) &&
486 TID_TO_WME_AC(tid) >= WME_AC_VI)
487 ic->ic_wme.wme_hipri_traffic++;
488 rxseq = le16toh(*(uint16_t *)wh->i_seq);
489 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 &&
490 (wh->i_fc[1] & IEEE80211_FC1_RETRY) &&
491 SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) {
492 /* duplicate, discard */
493 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
494 wh->i_addr1, "duplicate",
495 "seqno <%u,%u> fragno <%u,%u> tid %u",
496 rxseq >> IEEE80211_SEQ_SEQ_SHIFT,
497 ni->ni_rxseqs[tid] >> IEEE80211_SEQ_SEQ_SHIFT,
498 rxseq & IEEE80211_SEQ_FRAG_MASK,
499 ni->ni_rxseqs[tid] & IEEE80211_SEQ_FRAG_MASK,
501 vap->iv_stats.is_rx_dup++;
502 IEEE80211_NODE_STAT(ni, rx_dup);
505 ni->ni_rxseqs[tid] = rxseq;
508 case IEEE80211_FC0_TYPE_DATA:
509 hdrspace = ieee80211_hdrspace(ic, wh);
510 if (m->m_len < hdrspace &&
511 (m = m_pullup(m, hdrspace)) == NULL) {
512 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
513 ni->ni_macaddr, NULL,
514 "data too short: expecting %u", hdrspace);
515 vap->iv_stats.is_rx_tooshort++;
518 if (dir != IEEE80211_FC1_DIR_DSTODS) {
519 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
520 wh, "data", "incorrect dir 0x%x", dir);
521 vap->iv_stats.is_rx_wrongdir++;
525 * Only legacy WDS traffic should take this path.
527 if ((vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) == 0) {
528 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
529 wh, "data", "%s", "not legacy wds");
530 vap->iv_stats.is_rx_wrongdir++;/*XXX*/
533 if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
534 ni->ni_inact = ni->ni_inact_reload;
536 * Handle A-MPDU re-ordering. If the frame is to be
537 * processed directly then ieee80211_ampdu_reorder
538 * will return 0; otherwise it has consumed the mbuf
539 * and we should do nothing more with it.
541 if ((m->m_flags & M_AMPDU) &&
542 ieee80211_ampdu_reorder(ni, m) != 0) {
549 * Handle privacy requirements. Note that we
550 * must not be preempted from here until after
551 * we (potentially) call ieee80211_crypto_demic;
552 * otherwise we may violate assumptions in the
553 * crypto cipher modules used to do delayed update
554 * of replay sequence numbers.
556 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
557 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
559 * Discard encrypted frames when privacy is off.
561 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
562 wh, "WEP", "%s", "PRIVACY off");
563 vap->iv_stats.is_rx_noprivacy++;
564 IEEE80211_NODE_STAT(ni, rx_noprivacy);
567 key = ieee80211_crypto_decap(ni, m, hdrspace);
569 /* NB: stats+msgs handled in crypto_decap */
570 IEEE80211_NODE_STAT(ni, rx_wepfail);
573 wh = mtod(m, struct ieee80211_frame *);
574 wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
576 /* XXX M_WEP and IEEE80211_F_PRIVACY */
581 * Save QoS bits for use below--before we strip the header.
583 if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
584 qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
585 ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
586 ((struct ieee80211_qosframe *)wh)->i_qos[0];
591 * Next up, any fragmentation.
593 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
594 m = ieee80211_defrag(ni, m, hdrspace);
596 /* Fragment dropped or frame not complete yet */
600 wh = NULL; /* no longer valid, catch any uses */
603 * Next strip any MSDU crypto bits.
605 if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) {
606 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
607 ni->ni_macaddr, "data", "%s", "demic error");
608 vap->iv_stats.is_rx_demicfail++;
609 IEEE80211_NODE_STAT(ni, rx_demicfail);
613 /* copy to listener after decrypt */
614 if (ieee80211_radiotap_active_vap(vap))
615 ieee80211_radiotap_rx(vap, m);
619 * Finally, strip the 802.11 header.
621 m = ieee80211_decap(vap, m, hdrspace);
623 /* XXX mask bit to check for both */
624 /* don't count Null data frames as errors */
625 if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
626 subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
628 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
629 ni->ni_macaddr, "data", "%s", "decap error");
630 vap->iv_stats.is_rx_decap++;
631 IEEE80211_NODE_STAT(ni, rx_decap);
634 eh = mtod(m, struct ether_header *);
635 if (!ieee80211_node_is_authorized(ni)) {
637 * Deny any non-PAE frames received prior to
638 * authorization. For open/shared-key
639 * authentication the port is mark authorized
640 * after authentication completes. For 802.1x
641 * the port is not marked authorized by the
642 * authenticator until the handshake has completed.
644 if (eh->ether_type != htons(ETHERTYPE_PAE)) {
645 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
646 eh->ether_shost, "data",
647 "unauthorized port: ether type 0x%x len %u",
648 eh->ether_type, m->m_pkthdr.len);
649 vap->iv_stats.is_rx_unauth++;
650 IEEE80211_NODE_STAT(ni, rx_unauth);
655 * When denying unencrypted frames, discard
656 * any non-PAE frames received without encryption.
658 if ((vap->iv_flags & IEEE80211_F_DROPUNENC) &&
659 (key == NULL && (m->m_flags & M_WEP) == 0) &&
660 eh->ether_type != htons(ETHERTYPE_PAE)) {
662 * Drop unencrypted frames.
664 vap->iv_stats.is_rx_unencrypted++;
665 IEEE80211_NODE_STAT(ni, rx_unencrypted);
669 /* XXX require HT? */
670 if (qos & IEEE80211_QOS_AMSDU) {
671 m = ieee80211_decap_amsdu(ni, m);
673 return IEEE80211_FC0_TYPE_DATA;
675 #ifdef IEEE80211_SUPPORT_SUPERG
676 m = ieee80211_decap_fastframe(vap, ni, m);
678 return IEEE80211_FC0_TYPE_DATA;
681 ieee80211_deliver_data(vap, ni, m);
682 return IEEE80211_FC0_TYPE_DATA;
684 case IEEE80211_FC0_TYPE_MGT:
685 vap->iv_stats.is_rx_mgmt++;
686 IEEE80211_NODE_STAT(ni, rx_mgmt);
687 if (dir != IEEE80211_FC1_DIR_NODS) {
688 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
689 wh, "data", "incorrect dir 0x%x", dir);
690 vap->iv_stats.is_rx_wrongdir++;
693 if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
694 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
695 ni->ni_macaddr, "mgt", "too short: len %u",
697 vap->iv_stats.is_rx_tooshort++;
700 #ifdef IEEE80211_DEBUG
701 if (ieee80211_msg_debug(vap) || ieee80211_msg_dumppkts(vap)) {
702 if_printf(ifp, "received %s from %6D rssi %d\n",
703 ieee80211_mgt_subtype_name[subtype >>
704 IEEE80211_FC0_SUBTYPE_SHIFT],
705 wh->i_addr2, ":", rssi);
708 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
709 IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
710 wh, NULL, "%s", "WEP set but not permitted");
711 vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
714 vap->iv_recv_mgmt(ni, m, subtype, rssi, nf);
717 case IEEE80211_FC0_TYPE_CTL:
718 vap->iv_stats.is_rx_ctl++;
719 IEEE80211_NODE_STAT(ni, rx_ctrl);
723 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
724 wh, "bad", "frame type 0x%x", type);
725 /* should not come here */
732 if (need_tap && ieee80211_radiotap_active_vap(vap))
733 ieee80211_radiotap_rx(vap, m);
741 wds_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0,
742 int subtype, int rssi, int nf)
744 struct ieee80211vap *vap = ni->ni_vap;
745 struct ieee80211com *ic = ni->ni_ic;
746 struct ieee80211_frame *wh;
747 u_int8_t *frm, *efrm;
749 wh = mtod(m0, struct ieee80211_frame *);
750 frm = (u_int8_t *)&wh[1];
751 efrm = mtod(m0, u_int8_t *) + m0->m_len;
753 case IEEE80211_FC0_SUBTYPE_DEAUTH:
754 case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
755 case IEEE80211_FC0_SUBTYPE_BEACON:
756 case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
757 case IEEE80211_FC0_SUBTYPE_AUTH:
758 case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
759 case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
760 case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
761 case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
762 case IEEE80211_FC0_SUBTYPE_DISASSOC:
763 vap->iv_stats.is_rx_mgtdiscard++;
765 case IEEE80211_FC0_SUBTYPE_ACTION:
766 if (vap->iv_state != IEEE80211_S_RUN ||
767 IEEE80211_IS_MULTICAST(wh->i_addr1)) {
768 vap->iv_stats.is_rx_mgtdiscard++;
771 ni->ni_inact = ni->ni_inact_reload;
772 if (ieee80211_parse_action(ni, m0) == 0)
773 ic->ic_recv_action(ni, wh, frm, efrm);
776 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
777 wh, "mgt", "subtype 0x%x not handled", subtype);
778 vap->iv_stats.is_rx_badsubtype++;