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 $
31 #include <sys/param.h>
32 #include <sys/systm.h>
34 #include <sys/malloc.h>
35 #include <sys/endian.h>
36 #include <sys/kernel.h>
38 #include <sys/socket.h>
40 #include <net/ethernet.h>
42 #include <net/if_llc.h>
43 #include <net/if_media.h>
44 #include <net/route.h>
46 #include <netproto/802_11/ieee80211_var.h>
47 #include <netproto/802_11/ieee80211_input.h>
48 #ifdef IEEE80211_SUPPORT_MESH
49 #include <netproto/802_11/ieee80211_mesh.h>
55 #include <netinet/in.h>
56 #include <net/ethernet.h>
60 ieee80211_input_all(struct ieee80211com *ic, struct mbuf *m, int rssi, int nf)
62 struct ieee80211vap *vap;
65 m->m_flags |= M_BCAST; /* NB: mark for bpf tap'ing */
68 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
69 struct ieee80211_node *ni;
72 /* NB: could check for IFF_UP but this is cheaper */
73 if (vap->iv_state == IEEE80211_S_INIT)
76 * WDS vap's only receive directed traffic from the
77 * station at the ``far end''. That traffic should
78 * be passed through the AP vap the station is associated
79 * to--so don't spam them with mcast frames.
81 if (vap->iv_opmode == IEEE80211_M_WDS)
83 if (TAILQ_NEXT(vap, iv_next) != NULL) {
85 * Packet contents are changed by ieee80211_decap
86 * so do a deep copy of the packet.
88 mcopy = m_dup(m, MB_DONTWAIT);
97 ni = ieee80211_ref_node(vap->iv_bss);
98 type = ieee80211_input(ni, mcopy, rssi, nf);
99 ieee80211_free_node(ni);
101 if (m != NULL) /* no vaps, reclaim mbuf */
107 * This function reassembles fragments.
109 * XXX should handle 3 concurrent reassemblies per-spec.
112 ieee80211_defrag(struct ieee80211_node *ni, struct mbuf *m, int hdrspace)
114 struct ieee80211vap *vap = ni->ni_vap;
115 struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *);
116 struct ieee80211_frame *lwh;
119 uint8_t more_frag = wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG;
122 KASSERT(!IEEE80211_IS_MULTICAST(wh->i_addr1), ("multicast fragm?"));
124 rxseq = le16toh(*(uint16_t *)wh->i_seq);
125 fragno = rxseq & IEEE80211_SEQ_FRAG_MASK;
127 /* Quick way out, if there's nothing to defragment */
128 if (!more_frag && fragno == 0 && ni->ni_rxfrag[0] == NULL)
132 * Remove frag to insure it doesn't get reaped by timer.
134 if (ni->ni_table == NULL) {
136 * Should never happen. If the node is orphaned (not in
137 * the table) then input packets should not reach here.
138 * Otherwise, a concurrent request that yanks the table
139 * should be blocked by other interlocking and/or by first
140 * shutting the driver down. Regardless, be defensive
143 /* XXX need msg+stat */
147 mfrag = ni->ni_rxfrag[0];
148 ni->ni_rxfrag[0] = NULL;
151 * Validate new fragment is in order and
152 * related to the previous ones.
157 lwh = mtod(mfrag, struct ieee80211_frame *);
158 last_rxseq = le16toh(*(uint16_t *)lwh->i_seq);
159 /* NB: check seq # and frag together */
160 if (rxseq != last_rxseq+1 ||
161 !IEEE80211_ADDR_EQ(wh->i_addr1, lwh->i_addr1) ||
162 !IEEE80211_ADDR_EQ(wh->i_addr2, lwh->i_addr2)) {
164 * Unrelated fragment or no space for it,
165 * clear current fragments.
173 if (fragno != 0) { /* !first fragment, discard */
174 vap->iv_stats.is_rx_defrag++;
175 IEEE80211_NODE_STAT(ni, rx_defrag);
180 } else { /* concatenate */
181 m_adj(m, hdrspace); /* strip header */
183 /* NB: m_cat doesn't update the packet header */
184 mfrag->m_pkthdr.len += m->m_pkthdr.len;
185 /* track last seqnum and fragno */
186 lwh = mtod(mfrag, struct ieee80211_frame *);
187 *(uint16_t *) lwh->i_seq = *(uint16_t *) wh->i_seq;
189 if (more_frag) { /* more to come, save */
190 ni->ni_rxfragstamp = ticks;
191 ni->ni_rxfrag[0] = mfrag;
198 ieee80211_deliver_data(struct ieee80211vap *vap,
199 struct ieee80211_node *ni, struct mbuf *m)
201 struct ether_header *eh = mtod(m, struct ether_header *);
202 struct ifnet *ifp = vap->iv_ifp;
204 /* clear driver/net80211 flags before passing up */
205 m->m_flags &= ~(M_80211_RX | M_MCAST | M_BCAST);
207 /* NB: see hostap_deliver_data, this path doesn't handle hostap */
208 KASSERT(vap->iv_opmode != IEEE80211_M_HOSTAP, ("gack, hostap"));
213 IEEE80211_NODE_STAT(ni, rx_data);
214 IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len);
215 if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
216 m->m_flags |= M_MCAST; /* XXX M_BCAST? */
217 IEEE80211_NODE_STAT(ni, rx_mcast);
219 IEEE80211_NODE_STAT(ni, rx_ucast);
220 m->m_pkthdr.rcvif = ifp;
222 if (ni->ni_vlan != 0) {
223 /* attach vlan tag */
224 m->m_pkthdr.ether_vlantag = ni->ni_vlan;
225 m->m_flags |= M_VLANTAG;
227 ifp->if_input(ifp, m);
231 ieee80211_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen)
233 struct ieee80211_qosframe_addr4 wh;
234 struct ether_header *eh;
237 KASSERT(hdrlen <= sizeof(wh),
238 ("hdrlen %d > max %zd", hdrlen, sizeof(wh)));
240 if (m->m_len < hdrlen + sizeof(*llc) &&
241 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
242 vap->iv_stats.is_rx_tooshort++;
246 memcpy(&wh, mtod(m, caddr_t), hdrlen);
247 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
248 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
249 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
250 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
251 !(llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
252 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
255 m_adj(m, hdrlen - sizeof(*eh));
257 eh = mtod(m, struct ether_header *);
258 switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
259 case IEEE80211_FC1_DIR_NODS:
260 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
261 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
263 case IEEE80211_FC1_DIR_TODS:
264 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
265 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
267 case IEEE80211_FC1_DIR_FROMDS:
268 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
269 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr3);
271 case IEEE80211_FC1_DIR_DSTODS:
272 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
273 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr4);
276 #ifdef ALIGNED_POINTER
277 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
278 m = ieee80211_realign(vap, m, sizeof(*eh));
282 #endif /* ALIGNED_POINTER */
284 eh = mtod(m, struct ether_header *);
285 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
291 * Decap a frame encapsulated in a fast-frame/A-MSDU.
294 ieee80211_decap1(struct mbuf *m, int *framelen)
296 #define FF_LLC_SIZE (sizeof(struct ether_header) + sizeof(struct llc))
297 struct ether_header *eh;
301 * The frame has an 802.3 header followed by an 802.2
302 * LLC header. The encapsulated frame length is in the
303 * first header type field; save that and overwrite it
304 * with the true type field found in the second. Then
305 * copy the 802.3 header up to where it belongs and
306 * adjust the mbuf contents to remove the void.
308 if (m->m_len < FF_LLC_SIZE && (m = m_pullup(m, FF_LLC_SIZE)) == NULL)
310 eh = mtod(m, struct ether_header *); /* 802.3 header is first */
311 llc = (struct llc *)&eh[1]; /* 802.2 header follows */
312 *framelen = ntohs(eh->ether_type) /* encap'd frame size */
313 + sizeof(struct ether_header) - sizeof(struct llc);
314 eh->ether_type = llc->llc_un.type_snap.ether_type;
315 ovbcopy(eh, mtod(m, uint8_t *) + sizeof(struct llc),
316 sizeof(struct ether_header));
317 m_adj(m, sizeof(struct llc));
323 * Install received rate set information in the node's state block.
326 ieee80211_setup_rates(struct ieee80211_node *ni,
327 const uint8_t *rates, const uint8_t *xrates, int flags)
329 struct ieee80211vap *vap = ni->ni_vap;
330 struct ieee80211_rateset *rs = &ni->ni_rates;
332 memset(rs, 0, sizeof(*rs));
333 rs->rs_nrates = rates[1];
334 memcpy(rs->rs_rates, rates + 2, rs->rs_nrates);
335 if (xrates != NULL) {
338 * Tack on 11g extended supported rate element.
341 if (rs->rs_nrates + nxrates > IEEE80211_RATE_MAXSIZE) {
342 nxrates = IEEE80211_RATE_MAXSIZE - rs->rs_nrates;
343 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE, ni,
344 "extended rate set too large; only using "
345 "%u of %u rates", nxrates, xrates[1]);
346 vap->iv_stats.is_rx_rstoobig++;
348 memcpy(rs->rs_rates + rs->rs_nrates, xrates+2, nxrates);
349 rs->rs_nrates += nxrates;
351 return ieee80211_fix_rate(ni, rs, flags);
355 * Send a management frame error response to the specified
356 * station. If ni is associated with the station then use
357 * it; otherwise allocate a temporary node suitable for
358 * transmitting the frame and then free the reference so
359 * it will go away as soon as the frame has been transmitted.
362 ieee80211_send_error(struct ieee80211_node *ni,
363 const uint8_t mac[IEEE80211_ADDR_LEN], int subtype, int arg)
365 struct ieee80211vap *vap = ni->ni_vap;
368 if (ni == vap->iv_bss) {
369 if (vap->iv_state != IEEE80211_S_RUN) {
371 * XXX hack until we get rid of this routine.
372 * We can be called prior to the vap reaching
373 * run state under certain conditions in which
374 * case iv_bss->ni_chan will not be setup.
375 * Check for this explicitly and and just ignore
380 ni = ieee80211_tmp_node(vap, mac);
388 IEEE80211_SEND_MGMT(ni, subtype, arg);
390 ieee80211_free_node(ni);
394 ieee80211_alloc_challenge(struct ieee80211_node *ni)
396 if (ni->ni_challenge == NULL)
397 ni->ni_challenge = (uint32_t *) kmalloc(IEEE80211_CHALLENGE_LEN,
398 M_80211_NODE, M_INTWAIT);
399 if (ni->ni_challenge == NULL) {
400 IEEE80211_NOTE(ni->ni_vap,
401 IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni,
402 "%s", "shared key challenge alloc failed");
405 return (ni->ni_challenge != NULL);
409 * Parse a Beacon or ProbeResponse frame and return the
410 * useful information in an ieee80211_scanparams structure.
411 * Status is set to 0 if no problems were found; otherwise
412 * a bitmask of IEEE80211_BPARSE_* items is returned that
413 * describes the problems detected.
416 ieee80211_parse_beacon(struct ieee80211_node *ni, struct mbuf *m,
417 struct ieee80211_scanparams *scan)
419 struct ieee80211vap *vap = ni->ni_vap;
420 struct ieee80211com *ic = ni->ni_ic;
421 struct ieee80211_frame *wh;
424 wh = mtod(m, struct ieee80211_frame *);
425 frm = (uint8_t *)&wh[1];
426 efrm = mtod(m, uint8_t *) + m->m_len;
429 * beacon/probe response frame format
431 * [2] beacon interval
432 * [2] capability information
434 * [tlv] supported rates
435 * [tlv] country information
436 * [tlv] channel switch announcement (CSA)
437 * [tlv] parameter set (FH/DS)
438 * [tlv] erp information
439 * [tlv] extended supported rates
442 * [tlv] HT capabilities
443 * [tlv] HT information
444 * [tlv] Atheros capabilities
446 * [tlv] Mesh Configuration
448 IEEE80211_VERIFY_LENGTH(efrm - frm, 12,
449 return (scan->status = IEEE80211_BPARSE_BADIELEN));
450 memset(scan, 0, sizeof(*scan));
451 scan->tstamp = frm; frm += 8;
452 scan->bintval = le16toh(*(uint16_t *)frm); frm += 2;
453 scan->capinfo = le16toh(*(uint16_t *)frm); frm += 2;
454 scan->bchan = ieee80211_chan2ieee(ic, ic->ic_curchan);
455 scan->chan = scan->bchan;
457 scan->ies_len = efrm - frm;
459 while (efrm - frm > 1) {
460 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2,
461 return (scan->status = IEEE80211_BPARSE_BADIELEN));
463 case IEEE80211_ELEMID_SSID:
466 case IEEE80211_ELEMID_RATES:
469 case IEEE80211_ELEMID_COUNTRY:
472 case IEEE80211_ELEMID_CSA:
475 case IEEE80211_ELEMID_FHPARMS:
476 if (ic->ic_phytype == IEEE80211_T_FH) {
477 scan->fhdwell = LE_READ_2(&frm[2]);
478 scan->chan = IEEE80211_FH_CHAN(frm[4], frm[5]);
479 scan->fhindex = frm[6];
482 case IEEE80211_ELEMID_DSPARMS:
484 * XXX hack this since depending on phytype
485 * is problematic for multi-mode devices.
487 if (ic->ic_phytype != IEEE80211_T_FH)
490 case IEEE80211_ELEMID_TIM:
493 scan->timoff = frm - mtod(m, uint8_t *);
495 case IEEE80211_ELEMID_IBSSPARMS:
496 case IEEE80211_ELEMID_CFPARMS:
497 case IEEE80211_ELEMID_PWRCNSTR:
498 /* NB: avoid debugging complaints */
500 case IEEE80211_ELEMID_XRATES:
503 case IEEE80211_ELEMID_ERP:
505 IEEE80211_DISCARD_IE(vap,
506 IEEE80211_MSG_ELEMID, wh, "ERP",
507 "bad len %u", frm[1]);
508 vap->iv_stats.is_rx_elem_toobig++;
511 scan->erp = frm[2] | 0x100;
513 case IEEE80211_ELEMID_HTCAP:
516 case IEEE80211_ELEMID_RSN:
519 case IEEE80211_ELEMID_HTINFO:
522 #ifdef IEEE80211_SUPPORT_MESH
523 case IEEE80211_ELEMID_MESHID:
526 case IEEE80211_ELEMID_MESHCONF:
527 scan->meshconf = frm;
530 case IEEE80211_ELEMID_VENDOR:
533 else if (iswmeparam(frm) || iswmeinfo(frm))
535 #ifdef IEEE80211_SUPPORT_SUPERG
536 else if (isatherosoui(frm))
539 #ifdef IEEE80211_SUPPORT_TDMA
540 else if (istdmaoui(frm))
543 else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) {
545 * Accept pre-draft HT ie's if the
546 * standard ones have not been seen.
548 if (ishtcapoui(frm)) {
549 if (scan->htcap == NULL)
551 } else if (ishtinfooui(frm)) {
552 if (scan->htinfo == NULL)
558 IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID,
560 "id %u, len %u", *frm, frm[1]);
561 vap->iv_stats.is_rx_elem_unknown++;
566 IEEE80211_VERIFY_ELEMENT(scan->rates, IEEE80211_RATE_MAXSIZE,
567 scan->status |= IEEE80211_BPARSE_RATES_INVALID);
568 if (scan->rates != NULL && scan->xrates != NULL) {
570 * NB: don't process XRATES if RATES is missing. This
571 * avoids a potential null ptr deref and should be ok
572 * as the return code will already note RATES is missing
573 * (so callers shouldn't otherwise process the frame).
575 IEEE80211_VERIFY_ELEMENT(scan->xrates,
576 IEEE80211_RATE_MAXSIZE - scan->rates[1],
577 scan->status |= IEEE80211_BPARSE_XRATES_INVALID);
579 IEEE80211_VERIFY_ELEMENT(scan->ssid, IEEE80211_NWID_LEN,
580 scan->status |= IEEE80211_BPARSE_SSID_INVALID);
581 if (scan->chan != scan->bchan && ic->ic_phytype != IEEE80211_T_FH) {
583 * Frame was received on a channel different from the
584 * one indicated in the DS params element id;
585 * silently discard it.
587 * NB: this can happen due to signal leakage.
588 * But we should take it for FH phy because
589 * the rssi value should be correct even for
590 * different hop pattern in FH.
592 IEEE80211_DISCARD(vap,
593 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
594 wh, NULL, "for off-channel %u", scan->chan);
595 vap->iv_stats.is_rx_chanmismatch++;
596 scan->status |= IEEE80211_BPARSE_OFFCHAN;
598 if (!(IEEE80211_BINTVAL_MIN <= scan->bintval &&
599 scan->bintval <= IEEE80211_BINTVAL_MAX)) {
600 IEEE80211_DISCARD(vap,
601 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
602 wh, NULL, "bogus beacon interval %u", scan->bintval);
603 vap->iv_stats.is_rx_badbintval++;
604 scan->status |= IEEE80211_BPARSE_BINTVAL_INVALID;
606 if (scan->country != NULL) {
608 * Validate we have at least enough data to extract
609 * the country code. Not sure if we should return an
610 * error instead of discarding the IE; consider this
611 * being lenient as we don't depend on the data for
614 IEEE80211_VERIFY_LENGTH(scan->country[1], 3 * sizeof(uint8_t),
615 scan->country = NULL);
617 if (scan->csa != NULL) {
619 * Validate Channel Switch Announcement; this must
620 * be the correct length or we toss the frame.
622 IEEE80211_VERIFY_LENGTH(scan->csa[1], 3 * sizeof(uint8_t),
623 scan->status |= IEEE80211_BPARSE_CSA_INVALID);
626 * Process HT ie's. This is complicated by our
627 * accepting both the standard ie's and the pre-draft
628 * vendor OUI ie's that some vendors still use/require.
630 if (scan->htcap != NULL) {
631 IEEE80211_VERIFY_LENGTH(scan->htcap[1],
632 scan->htcap[0] == IEEE80211_ELEMID_VENDOR ?
633 4 + sizeof(struct ieee80211_ie_htcap)-2 :
634 sizeof(struct ieee80211_ie_htcap)-2,
637 if (scan->htinfo != NULL) {
638 IEEE80211_VERIFY_LENGTH(scan->htinfo[1],
639 scan->htinfo[0] == IEEE80211_ELEMID_VENDOR ?
640 4 + sizeof(struct ieee80211_ie_htinfo)-2 :
641 sizeof(struct ieee80211_ie_htinfo)-2,
642 scan->htinfo = NULL);
648 * Parse an Action frame. Return 0 on success, non-zero on failure.
651 ieee80211_parse_action(struct ieee80211_node *ni, struct mbuf *m)
653 struct ieee80211vap *vap = ni->ni_vap;
654 const struct ieee80211_action *ia;
655 struct ieee80211_frame *wh;
659 * action frame format:
664 wh = mtod(m, struct ieee80211_frame *);
665 frm = (u_int8_t *)&wh[1];
666 efrm = mtod(m, u_int8_t *) + m->m_len;
667 IEEE80211_VERIFY_LENGTH(efrm - frm,
668 sizeof(struct ieee80211_action), return EINVAL);
669 ia = (const struct ieee80211_action *) frm;
671 vap->iv_stats.is_rx_action++;
672 IEEE80211_NODE_STAT(ni, rx_action);
674 /* verify frame payloads but defer processing */
675 /* XXX maybe push this to method */
676 switch (ia->ia_category) {
677 case IEEE80211_ACTION_CAT_BA:
678 switch (ia->ia_action) {
679 case IEEE80211_ACTION_BA_ADDBA_REQUEST:
680 IEEE80211_VERIFY_LENGTH(efrm - frm,
681 sizeof(struct ieee80211_action_ba_addbarequest),
684 case IEEE80211_ACTION_BA_ADDBA_RESPONSE:
685 IEEE80211_VERIFY_LENGTH(efrm - frm,
686 sizeof(struct ieee80211_action_ba_addbaresponse),
689 case IEEE80211_ACTION_BA_DELBA:
690 IEEE80211_VERIFY_LENGTH(efrm - frm,
691 sizeof(struct ieee80211_action_ba_delba),
696 case IEEE80211_ACTION_CAT_HT:
697 switch (ia->ia_action) {
698 case IEEE80211_ACTION_HT_TXCHWIDTH:
699 IEEE80211_VERIFY_LENGTH(efrm - frm,
700 sizeof(struct ieee80211_action_ht_txchwidth),
703 case IEEE80211_ACTION_HT_MIMOPWRSAVE:
704 IEEE80211_VERIFY_LENGTH(efrm - frm,
705 sizeof(struct ieee80211_action_ht_mimopowersave),
715 * Modules may be compiled with debugging even if wlan isn't
717 /*#ifdef IEEE80211_DEBUG*/
723 ieee80211_ssid_mismatch(struct ieee80211vap *vap, const char *tag,
724 uint8_t mac[IEEE80211_ADDR_LEN], uint8_t *ssid)
726 kprintf("[%6D] discard %s frame, ssid mismatch: ",
728 ieee80211_print_essid(ssid + 2, ssid[1]);
733 * Return the bssid of a frame.
735 static const uint8_t *
736 ieee80211_getbssid(const struct ieee80211vap *vap, const struct ieee80211_frame *wh)
738 if (vap->iv_opmode == IEEE80211_M_STA)
740 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) != IEEE80211_FC1_DIR_NODS)
742 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
747 #include <machine/stdarg.h>
750 ieee80211_note(const struct ieee80211vap *vap, const char *fmt, ...)
752 char buf[128]; /* XXX */
756 kvsnprintf(buf, sizeof(buf), fmt, ap);
759 if_printf(vap->iv_ifp, "%s", buf); /* NB: no \n */
763 ieee80211_note_frame(const struct ieee80211vap *vap,
764 const struct ieee80211_frame *wh,
765 const char *fmt, ...)
767 char buf[128]; /* XXX */
771 kvsnprintf(buf, sizeof(buf), fmt, ap);
773 if_printf(vap->iv_ifp, "[%6D] %s\n",
774 ieee80211_getbssid(vap, wh), ":", buf);
778 ieee80211_note_mac(const struct ieee80211vap *vap,
779 const uint8_t mac[IEEE80211_ADDR_LEN],
780 const char *fmt, ...)
782 char buf[128]; /* XXX */
786 kvsnprintf(buf, sizeof(buf), fmt, ap);
788 if_printf(vap->iv_ifp, "[%6D] %s\n", mac, ":", buf);
792 ieee80211_discard_frame(const struct ieee80211vap *vap,
793 const struct ieee80211_frame *wh,
794 const char *type, const char *fmt, ...)
798 if_printf(vap->iv_ifp, "[%6D] discard ",
799 ieee80211_getbssid(vap, wh), ":");
801 kprintf("%s frame, ", ieee80211_mgt_subtype_name[
802 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) >>
803 IEEE80211_FC0_SUBTYPE_SHIFT]);
805 kprintf("%s frame, ", type);
813 ieee80211_discard_ie(const struct ieee80211vap *vap,
814 const struct ieee80211_frame *wh,
815 const char *type, const char *fmt, ...)
819 if_printf(vap->iv_ifp, "[%6D] discard ",
820 ieee80211_getbssid(vap, wh), ":");
822 kprintf("%s information element, ", type);
824 kprintf("information element, ");
832 ieee80211_discard_mac(const struct ieee80211vap *vap,
833 const uint8_t mac[IEEE80211_ADDR_LEN],
834 const char *type, const char *fmt, ...)
838 if_printf(vap->iv_ifp, "[%6D] discard ", mac, ":");
840 kprintf("%s frame, ", type);
848 #endif /* IEEE80211_DEBUG */