2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * $FreeBSD: head/sys/net80211/ieee80211_input.c 205986 2010-03-31 16:07:36Z rpaulo $
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/endian.h>
37 #include <sys/kernel.h>
39 #include <sys/socket.h>
41 #include <net/ethernet.h>
43 #include <net/if_llc.h>
44 #include <net/if_media.h>
45 #include <net/route.h>
47 #include <netproto/802_11/ieee80211_var.h>
48 #include <netproto/802_11/ieee80211_input.h>
49 #ifdef IEEE80211_SUPPORT_MESH
50 #include <netproto/802_11/ieee80211_mesh.h>
56 #include <netinet/in.h>
57 #include <net/ethernet.h>
61 ieee80211_input_all(struct ieee80211com *ic, struct mbuf *m, int rssi, int nf)
63 struct ieee80211vap *vap;
66 m->m_flags |= M_BCAST; /* NB: mark for bpf tap'ing */
69 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
70 struct ieee80211_node *ni;
73 /* NB: could check for IFF_UP but this is cheaper */
74 if (vap->iv_state == IEEE80211_S_INIT)
77 * WDS vap's only receive directed traffic from the
78 * station at the ``far end''. That traffic should
79 * be passed through the AP vap the station is associated
80 * to--so don't spam them with mcast frames.
82 if (vap->iv_opmode == IEEE80211_M_WDS)
84 if (TAILQ_NEXT(vap, iv_next) != NULL) {
86 * Packet contents are changed by ieee80211_decap
87 * so do a deep copy of the packet.
89 mcopy = m_dup(m, MB_DONTWAIT);
98 ni = ieee80211_ref_node(vap->iv_bss);
99 type = ieee80211_input(ni, mcopy, rssi, nf);
100 ieee80211_free_node(ni);
102 if (m != NULL) /* no vaps, reclaim mbuf */
108 * This function reassembles fragments.
110 * XXX should handle 3 concurrent reassemblies per-spec.
113 ieee80211_defrag(struct ieee80211_node *ni, struct mbuf *m, int hdrspace)
115 struct ieee80211vap *vap = ni->ni_vap;
116 struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *);
117 struct ieee80211_frame *lwh;
120 uint8_t more_frag = wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG;
123 KASSERT(!IEEE80211_IS_MULTICAST(wh->i_addr1), ("multicast fragm?"));
125 rxseq = le16toh(*(uint16_t *)wh->i_seq);
126 fragno = rxseq & IEEE80211_SEQ_FRAG_MASK;
128 /* Quick way out, if there's nothing to defragment */
129 if (!more_frag && fragno == 0 && ni->ni_rxfrag[0] == NULL)
133 * Remove frag to insure it doesn't get reaped by timer.
135 if (ni->ni_table == NULL) {
137 * Should never happen. If the node is orphaned (not in
138 * the table) then input packets should not reach here.
139 * Otherwise, a concurrent request that yanks the table
140 * should be blocked by other interlocking and/or by first
141 * shutting the driver down. Regardless, be defensive
144 /* XXX need msg+stat */
148 mfrag = ni->ni_rxfrag[0];
149 ni->ni_rxfrag[0] = NULL;
152 * Validate new fragment is in order and
153 * related to the previous ones.
158 lwh = mtod(mfrag, struct ieee80211_frame *);
159 last_rxseq = le16toh(*(uint16_t *)lwh->i_seq);
160 /* NB: check seq # and frag together */
161 if (rxseq != last_rxseq+1 ||
162 !IEEE80211_ADDR_EQ(wh->i_addr1, lwh->i_addr1) ||
163 !IEEE80211_ADDR_EQ(wh->i_addr2, lwh->i_addr2)) {
165 * Unrelated fragment or no space for it,
166 * clear current fragments.
174 if (fragno != 0) { /* !first fragment, discard */
175 vap->iv_stats.is_rx_defrag++;
176 IEEE80211_NODE_STAT(ni, rx_defrag);
181 } else { /* concatenate */
182 m_adj(m, hdrspace); /* strip header */
184 /* NB: m_cat doesn't update the packet header */
185 mfrag->m_pkthdr.len += m->m_pkthdr.len;
186 /* track last seqnum and fragno */
187 lwh = mtod(mfrag, struct ieee80211_frame *);
188 *(uint16_t *) lwh->i_seq = *(uint16_t *) wh->i_seq;
190 if (more_frag) { /* more to come, save */
191 ni->ni_rxfragstamp = ticks;
192 ni->ni_rxfrag[0] = mfrag;
199 ieee80211_deliver_data(struct ieee80211vap *vap,
200 struct ieee80211_node *ni, struct mbuf *m)
202 struct ether_header *eh = mtod(m, struct ether_header *);
203 struct ifnet *ifp = vap->iv_ifp;
205 /* clear driver/net80211 flags before passing up */
206 m->m_flags &= ~(M_80211_RX | M_MCAST | M_BCAST);
208 /* NB: see hostap_deliver_data, this path doesn't handle hostap */
209 KASSERT(vap->iv_opmode != IEEE80211_M_HOSTAP, ("gack, hostap"));
214 IEEE80211_NODE_STAT(ni, rx_data);
215 IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len);
216 if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
217 m->m_flags |= M_MCAST; /* XXX M_BCAST? */
218 IEEE80211_NODE_STAT(ni, rx_mcast);
220 IEEE80211_NODE_STAT(ni, rx_ucast);
221 m->m_pkthdr.rcvif = ifp;
223 if (ni->ni_vlan != 0) {
224 /* attach vlan tag */
225 m->m_pkthdr.ether_vlantag = ni->ni_vlan;
226 m->m_flags |= M_VLANTAG;
228 ifp->if_input(ifp, m);
232 ieee80211_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen)
234 struct ieee80211_qosframe_addr4 wh;
235 struct ether_header *eh;
238 KASSERT(hdrlen <= sizeof(wh),
239 ("hdrlen %d > max %zd", hdrlen, sizeof(wh)));
241 if (m->m_len < hdrlen + sizeof(*llc) &&
242 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
243 vap->iv_stats.is_rx_tooshort++;
247 memcpy(&wh, mtod(m, caddr_t), hdrlen);
248 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
249 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
250 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
251 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
252 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
253 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
256 m_adj(m, hdrlen - sizeof(*eh));
258 eh = mtod(m, struct ether_header *);
259 switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
260 case IEEE80211_FC1_DIR_NODS:
261 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
262 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
264 case IEEE80211_FC1_DIR_TODS:
265 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
266 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
268 case IEEE80211_FC1_DIR_FROMDS:
269 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
270 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr3);
272 case IEEE80211_FC1_DIR_DSTODS:
273 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
274 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr4);
277 #ifdef ALIGNED_POINTER
278 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
279 m = ieee80211_realign(vap, m, sizeof(*eh));
283 #endif /* ALIGNED_POINTER */
285 eh = mtod(m, struct ether_header *);
286 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
292 * Decap a frame encapsulated in a fast-frame/A-MSDU.
295 ieee80211_decap1(struct mbuf *m, int *framelen)
297 #define FF_LLC_SIZE (sizeof(struct ether_header) + sizeof(struct llc))
298 struct ether_header *eh;
302 * The frame has an 802.3 header followed by an 802.2
303 * LLC header. The encapsulated frame length is in the
304 * first header type field; save that and overwrite it
305 * with the true type field found in the second. Then
306 * copy the 802.3 header up to where it belongs and
307 * adjust the mbuf contents to remove the void.
309 if (m->m_len < FF_LLC_SIZE && (m = m_pullup(m, FF_LLC_SIZE)) == NULL)
311 eh = mtod(m, struct ether_header *); /* 802.3 header is first */
312 llc = (struct llc *)&eh[1]; /* 802.2 header follows */
313 *framelen = ntohs(eh->ether_type) /* encap'd frame size */
314 + sizeof(struct ether_header) - sizeof(struct llc);
315 eh->ether_type = llc->llc_un.type_snap.ether_type;
316 ovbcopy(eh, mtod(m, uint8_t *) + sizeof(struct llc),
317 sizeof(struct ether_header));
318 m_adj(m, sizeof(struct llc));
324 * Install received rate set information in the node's state block.
327 ieee80211_setup_rates(struct ieee80211_node *ni,
328 const uint8_t *rates, const uint8_t *xrates, int flags)
330 struct ieee80211vap *vap = ni->ni_vap;
331 struct ieee80211_rateset *rs = &ni->ni_rates;
333 memset(rs, 0, sizeof(*rs));
334 rs->rs_nrates = rates[1];
335 memcpy(rs->rs_rates, rates + 2, rs->rs_nrates);
336 if (xrates != NULL) {
339 * Tack on 11g extended supported rate element.
342 if (rs->rs_nrates + nxrates > IEEE80211_RATE_MAXSIZE) {
343 nxrates = IEEE80211_RATE_MAXSIZE - rs->rs_nrates;
344 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE, ni,
345 "extended rate set too large; only using "
346 "%u of %u rates", nxrates, xrates[1]);
347 vap->iv_stats.is_rx_rstoobig++;
349 memcpy(rs->rs_rates + rs->rs_nrates, xrates+2, nxrates);
350 rs->rs_nrates += nxrates;
352 return ieee80211_fix_rate(ni, rs, flags);
356 * Send a management frame error response to the specified
357 * station. If ni is associated with the station then use
358 * it; otherwise allocate a temporary node suitable for
359 * transmitting the frame and then free the reference so
360 * it will go away as soon as the frame has been transmitted.
363 ieee80211_send_error(struct ieee80211_node *ni,
364 const uint8_t mac[IEEE80211_ADDR_LEN], int subtype, int arg)
366 struct ieee80211vap *vap = ni->ni_vap;
369 if (ni == vap->iv_bss) {
370 if (vap->iv_state != IEEE80211_S_RUN) {
372 * XXX hack until we get rid of this routine.
373 * We can be called prior to the vap reaching
374 * run state under certain conditions in which
375 * case iv_bss->ni_chan will not be setup.
376 * Check for this explicitly and and just ignore
381 ni = ieee80211_tmp_node(vap, mac);
389 IEEE80211_SEND_MGMT(ni, subtype, arg);
391 ieee80211_free_node(ni);
395 ieee80211_alloc_challenge(struct ieee80211_node *ni)
397 if (ni->ni_challenge == NULL)
398 ni->ni_challenge = (uint32_t *) kmalloc(IEEE80211_CHALLENGE_LEN,
399 M_80211_NODE, M_INTWAIT);
400 if (ni->ni_challenge == NULL) {
401 IEEE80211_NOTE(ni->ni_vap,
402 IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni,
403 "%s", "shared key challenge alloc failed");
406 return (ni->ni_challenge != NULL);
410 * Parse a Beacon or ProbeResponse frame and return the
411 * useful information in an ieee80211_scanparams structure.
412 * Status is set to 0 if no problems were found; otherwise
413 * a bitmask of IEEE80211_BPARSE_* items is returned that
414 * describes the problems detected.
417 ieee80211_parse_beacon(struct ieee80211_node *ni, struct mbuf *m,
418 struct ieee80211_scanparams *scan)
420 struct ieee80211vap *vap = ni->ni_vap;
421 struct ieee80211com *ic = ni->ni_ic;
422 struct ieee80211_frame *wh;
425 wh = mtod(m, struct ieee80211_frame *);
426 frm = (uint8_t *)&wh[1];
427 efrm = mtod(m, uint8_t *) + m->m_len;
430 * beacon/probe response frame format
432 * [2] beacon interval
433 * [2] capability information
435 * [tlv] supported rates
436 * [tlv] country information
437 * [tlv] channel switch announcement (CSA)
438 * [tlv] parameter set (FH/DS)
439 * [tlv] erp information
440 * [tlv] extended supported rates
443 * [tlv] HT capabilities
444 * [tlv] HT information
445 * [tlv] Atheros capabilities
447 * [tlv] Mesh Configuration
449 IEEE80211_VERIFY_LENGTH(efrm - frm, 12,
450 return (scan->status = IEEE80211_BPARSE_BADIELEN));
451 memset(scan, 0, sizeof(*scan));
452 scan->tstamp = frm; frm += 8;
453 scan->bintval = le16toh(*(uint16_t *)frm); frm += 2;
454 scan->capinfo = le16toh(*(uint16_t *)frm); frm += 2;
455 scan->bchan = ieee80211_chan2ieee(ic, ic->ic_curchan);
456 scan->chan = scan->bchan;
458 scan->ies_len = efrm - frm;
460 while (efrm - frm > 1) {
461 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2,
462 return (scan->status = IEEE80211_BPARSE_BADIELEN));
464 case IEEE80211_ELEMID_SSID:
467 case IEEE80211_ELEMID_RATES:
470 case IEEE80211_ELEMID_COUNTRY:
473 case IEEE80211_ELEMID_CSA:
476 case IEEE80211_ELEMID_FHPARMS:
477 if (ic->ic_phytype == IEEE80211_T_FH) {
478 scan->fhdwell = LE_READ_2(&frm[2]);
479 scan->chan = IEEE80211_FH_CHAN(frm[4], frm[5]);
480 scan->fhindex = frm[6];
483 case IEEE80211_ELEMID_DSPARMS:
485 * XXX hack this since depending on phytype
486 * is problematic for multi-mode devices.
488 if (ic->ic_phytype != IEEE80211_T_FH)
491 case IEEE80211_ELEMID_TIM:
494 scan->timoff = frm - mtod(m, uint8_t *);
496 case IEEE80211_ELEMID_IBSSPARMS:
497 case IEEE80211_ELEMID_CFPARMS:
498 case IEEE80211_ELEMID_PWRCNSTR:
499 /* NB: avoid debugging complaints */
501 case IEEE80211_ELEMID_XRATES:
504 case IEEE80211_ELEMID_ERP:
506 IEEE80211_DISCARD_IE(vap,
507 IEEE80211_MSG_ELEMID, wh, "ERP",
508 "bad len %u", frm[1]);
509 vap->iv_stats.is_rx_elem_toobig++;
512 scan->erp = frm[2] | 0x100;
514 case IEEE80211_ELEMID_HTCAP:
517 case IEEE80211_ELEMID_RSN:
520 case IEEE80211_ELEMID_HTINFO:
523 #ifdef IEEE80211_SUPPORT_MESH
524 case IEEE80211_ELEMID_MESHID:
527 case IEEE80211_ELEMID_MESHCONF:
528 scan->meshconf = frm;
531 case IEEE80211_ELEMID_VENDOR:
534 else if (iswmeparam(frm) || iswmeinfo(frm))
536 #ifdef IEEE80211_SUPPORT_SUPERG
537 else if (isatherosoui(frm))
540 #ifdef IEEE80211_SUPPORT_TDMA
541 else if (istdmaoui(frm))
544 else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) {
546 * Accept pre-draft HT ie's if the
547 * standard ones have not been seen.
549 if (ishtcapoui(frm)) {
550 if (scan->htcap == NULL)
552 } else if (ishtinfooui(frm)) {
553 if (scan->htinfo == NULL)
559 IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID,
561 "id %u, len %u", *frm, frm[1]);
562 vap->iv_stats.is_rx_elem_unknown++;
567 IEEE80211_VERIFY_ELEMENT(scan->rates, IEEE80211_RATE_MAXSIZE,
568 scan->status |= IEEE80211_BPARSE_RATES_INVALID);
569 if (scan->rates != NULL && scan->xrates != NULL) {
571 * NB: don't process XRATES if RATES is missing. This
572 * avoids a potential null ptr deref and should be ok
573 * as the return code will already note RATES is missing
574 * (so callers shouldn't otherwise process the frame).
576 IEEE80211_VERIFY_ELEMENT(scan->xrates,
577 IEEE80211_RATE_MAXSIZE - scan->rates[1],
578 scan->status |= IEEE80211_BPARSE_XRATES_INVALID);
580 IEEE80211_VERIFY_ELEMENT(scan->ssid, IEEE80211_NWID_LEN,
581 scan->status |= IEEE80211_BPARSE_SSID_INVALID);
582 if (scan->chan != scan->bchan && ic->ic_phytype != IEEE80211_T_FH) {
584 * Frame was received on a channel different from the
585 * one indicated in the DS params element id;
586 * silently discard it.
588 * NB: this can happen due to signal leakage.
589 * But we should take it for FH phy because
590 * the rssi value should be correct even for
591 * different hop pattern in FH.
593 IEEE80211_DISCARD(vap,
594 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
595 wh, NULL, "for off-channel %u", scan->chan);
596 vap->iv_stats.is_rx_chanmismatch++;
597 scan->status |= IEEE80211_BPARSE_OFFCHAN;
599 if (!(IEEE80211_BINTVAL_MIN <= scan->bintval &&
600 scan->bintval <= IEEE80211_BINTVAL_MAX)) {
601 IEEE80211_DISCARD(vap,
602 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
603 wh, NULL, "bogus beacon interval %u", scan->bintval);
604 vap->iv_stats.is_rx_badbintval++;
605 scan->status |= IEEE80211_BPARSE_BINTVAL_INVALID;
607 if (scan->country != NULL) {
609 * Validate we have at least enough data to extract
610 * the country code. Not sure if we should return an
611 * error instead of discarding the IE; consider this
612 * being lenient as we don't depend on the data for
615 IEEE80211_VERIFY_LENGTH(scan->country[1], 3 * sizeof(uint8_t),
616 scan->country = NULL);
618 if (scan->csa != NULL) {
620 * Validate Channel Switch Announcement; this must
621 * be the correct length or we toss the frame.
623 IEEE80211_VERIFY_LENGTH(scan->csa[1], 3 * sizeof(uint8_t),
624 scan->status |= IEEE80211_BPARSE_CSA_INVALID);
627 * Process HT ie's. This is complicated by our
628 * accepting both the standard ie's and the pre-draft
629 * vendor OUI ie's that some vendors still use/require.
631 if (scan->htcap != NULL) {
632 IEEE80211_VERIFY_LENGTH(scan->htcap[1],
633 scan->htcap[0] == IEEE80211_ELEMID_VENDOR ?
634 4 + sizeof(struct ieee80211_ie_htcap)-2 :
635 sizeof(struct ieee80211_ie_htcap)-2,
638 if (scan->htinfo != NULL) {
639 IEEE80211_VERIFY_LENGTH(scan->htinfo[1],
640 scan->htinfo[0] == IEEE80211_ELEMID_VENDOR ?
641 4 + sizeof(struct ieee80211_ie_htinfo)-2 :
642 sizeof(struct ieee80211_ie_htinfo)-2,
643 scan->htinfo = NULL);
649 * Parse an Action frame. Return 0 on success, non-zero on failure.
652 ieee80211_parse_action(struct ieee80211_node *ni, struct mbuf *m)
654 struct ieee80211vap *vap = ni->ni_vap;
655 const struct ieee80211_action *ia;
656 struct ieee80211_frame *wh;
660 * action frame format:
665 wh = mtod(m, struct ieee80211_frame *);
666 frm = (u_int8_t *)&wh[1];
667 efrm = mtod(m, u_int8_t *) + m->m_len;
668 IEEE80211_VERIFY_LENGTH(efrm - frm,
669 sizeof(struct ieee80211_action), return EINVAL);
670 ia = (const struct ieee80211_action *) frm;
672 vap->iv_stats.is_rx_action++;
673 IEEE80211_NODE_STAT(ni, rx_action);
675 /* verify frame payloads but defer processing */
676 /* XXX maybe push this to method */
677 switch (ia->ia_category) {
678 case IEEE80211_ACTION_CAT_BA:
679 switch (ia->ia_action) {
680 case IEEE80211_ACTION_BA_ADDBA_REQUEST:
681 IEEE80211_VERIFY_LENGTH(efrm - frm,
682 sizeof(struct ieee80211_action_ba_addbarequest),
685 case IEEE80211_ACTION_BA_ADDBA_RESPONSE:
686 IEEE80211_VERIFY_LENGTH(efrm - frm,
687 sizeof(struct ieee80211_action_ba_addbaresponse),
690 case IEEE80211_ACTION_BA_DELBA:
691 IEEE80211_VERIFY_LENGTH(efrm - frm,
692 sizeof(struct ieee80211_action_ba_delba),
697 case IEEE80211_ACTION_CAT_HT:
698 switch (ia->ia_action) {
699 case IEEE80211_ACTION_HT_TXCHWIDTH:
700 IEEE80211_VERIFY_LENGTH(efrm - frm,
701 sizeof(struct ieee80211_action_ht_txchwidth),
704 case IEEE80211_ACTION_HT_MIMOPWRSAVE:
705 IEEE80211_VERIFY_LENGTH(efrm - frm,
706 sizeof(struct ieee80211_action_ht_mimopowersave),
716 * Modules may be compiled with debugging even if wlan isn't
718 /*#ifdef IEEE80211_DEBUG*/
724 ieee80211_ssid_mismatch(struct ieee80211vap *vap, const char *tag,
725 uint8_t mac[IEEE80211_ADDR_LEN], uint8_t *ssid)
727 kprintf("[%6D] discard %s frame, ssid mismatch: ",
729 ieee80211_print_essid(ssid + 2, ssid[1]);
734 * Return the bssid of a frame.
736 static const uint8_t *
737 ieee80211_getbssid(const struct ieee80211vap *vap, const struct ieee80211_frame *wh)
739 if (vap->iv_opmode == IEEE80211_M_STA)
741 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) != IEEE80211_FC1_DIR_NODS)
743 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
748 #include <machine/stdarg.h>
751 ieee80211_note(const struct ieee80211vap *vap, const char *fmt, ...)
753 char buf[128]; /* XXX */
757 kvsnprintf(buf, sizeof(buf), fmt, ap);
760 if_printf(vap->iv_ifp, "%s", buf); /* NB: no \n */
764 ieee80211_note_frame(const struct ieee80211vap *vap,
765 const struct ieee80211_frame *wh,
766 const char *fmt, ...)
768 char buf[128]; /* XXX */
772 kvsnprintf(buf, sizeof(buf), fmt, ap);
774 if_printf(vap->iv_ifp, "[%6D] %s\n",
775 ieee80211_getbssid(vap, wh), ":", buf);
779 ieee80211_note_mac(const struct ieee80211vap *vap,
780 const uint8_t mac[IEEE80211_ADDR_LEN],
781 const char *fmt, ...)
783 char buf[128]; /* XXX */
787 kvsnprintf(buf, sizeof(buf), fmt, ap);
789 if_printf(vap->iv_ifp, "[%6D] %s\n", mac, ":", buf);
793 ieee80211_discard_frame(const struct ieee80211vap *vap,
794 const struct ieee80211_frame *wh,
795 const char *type, const char *fmt, ...)
799 if_printf(vap->iv_ifp, "[%6D] discard ",
800 ieee80211_getbssid(vap, wh), ":");
802 kprintf("%s frame, ", ieee80211_mgt_subtype_name[
803 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) >>
804 IEEE80211_FC0_SUBTYPE_SHIFT]);
806 kprintf("%s frame, ", type);
814 ieee80211_discard_ie(const struct ieee80211vap *vap,
815 const struct ieee80211_frame *wh,
816 const char *type, const char *fmt, ...)
820 if_printf(vap->iv_ifp, "[%6D] discard ",
821 ieee80211_getbssid(vap, wh), ":");
823 kprintf("%s information element, ", type);
825 kprintf("information element, ");
833 ieee80211_discard_mac(const struct ieee80211vap *vap,
834 const uint8_t mac[IEEE80211_ADDR_LEN],
835 const char *type, const char *fmt, ...)
839 if_printf(vap->iv_ifp, "[%6D] discard ", mac, ":");
841 kprintf("%s frame, ", type);
849 #endif /* IEEE80211_DEBUG */