2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2008 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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
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/if_vlan_var.h>
47 #include <net80211/ieee80211_var.h>
48 #include <net80211/ieee80211_input.h>
53 #include <netinet/in.h>
54 #include <net/ethernet.h>
58 ieee80211_input_all(struct ieee80211com *ic,
59 struct mbuf *m, int rssi, int noise, u_int32_t rstamp)
61 struct ieee80211vap *vap;
65 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
66 struct ieee80211_node *ni;
70 * WDS vap's only receive directed traffic from the
71 * station at the ``far end''. That traffic should
72 * be passed through the AP vap the station is associated
73 * to--so don't spam them with mcast frames.
75 if (vap->iv_opmode == IEEE80211_M_WDS)
77 if (TAILQ_NEXT(vap, iv_next) != NULL) {
79 * Packet contents are changed by ieee80211_decap
80 * so do a deep copy of the packet.
82 mcopy = m_dup(m, M_DONTWAIT);
91 ni = ieee80211_ref_node(vap->iv_bss);
92 type = ieee80211_input(ni, mcopy, rssi, noise, rstamp);
93 ieee80211_free_node(ni);
95 if (m != NULL) /* no vaps, reclaim mbuf */
101 * This function reassemble fragments.
103 * XXX should handle 3 concurrent reassemblies per-spec.
106 ieee80211_defrag(struct ieee80211_node *ni, struct mbuf *m, int hdrspace)
108 struct ieee80211vap *vap = ni->ni_vap;
109 struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *);
110 struct ieee80211_frame *lwh;
113 uint8_t more_frag = wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG;
116 KASSERT(!IEEE80211_IS_MULTICAST(wh->i_addr1), ("multicast fragm?"));
118 rxseq = le16toh(*(uint16_t *)wh->i_seq);
119 fragno = rxseq & IEEE80211_SEQ_FRAG_MASK;
121 /* Quick way out, if there's nothing to defragment */
122 if (!more_frag && fragno == 0 && ni->ni_rxfrag[0] == NULL)
126 * Remove frag to insure it doesn't get reaped by timer.
128 if (ni->ni_table == NULL) {
130 * Should never happen. If the node is orphaned (not in
131 * the table) then input packets should not reach here.
132 * Otherwise, a concurrent request that yanks the table
133 * should be blocked by other interlocking and/or by first
134 * shutting the driver down. Regardless, be defensive
137 /* XXX need msg+stat */
141 IEEE80211_NODE_LOCK(ni->ni_table);
142 mfrag = ni->ni_rxfrag[0];
143 ni->ni_rxfrag[0] = NULL;
144 IEEE80211_NODE_UNLOCK(ni->ni_table);
147 * Validate new fragment is in order and
148 * related to the previous ones.
153 lwh = mtod(mfrag, struct ieee80211_frame *);
154 last_rxseq = le16toh(*(uint16_t *)lwh->i_seq);
155 /* NB: check seq # and frag together */
156 if (rxseq != last_rxseq+1 ||
157 !IEEE80211_ADDR_EQ(wh->i_addr1, lwh->i_addr1) ||
158 !IEEE80211_ADDR_EQ(wh->i_addr2, lwh->i_addr2)) {
160 * Unrelated fragment or no space for it,
161 * clear current fragments.
169 if (fragno != 0) { /* !first fragment, discard */
170 vap->iv_stats.is_rx_defrag++;
171 IEEE80211_NODE_STAT(ni, rx_defrag);
176 } else { /* concatenate */
177 m_adj(m, hdrspace); /* strip header */
179 /* NB: m_cat doesn't update the packet header */
180 mfrag->m_pkthdr.len += m->m_pkthdr.len;
181 /* track last seqnum and fragno */
182 lwh = mtod(mfrag, struct ieee80211_frame *);
183 *(uint16_t *) lwh->i_seq = *(uint16_t *) wh->i_seq;
185 if (more_frag) { /* more to come, save */
186 ni->ni_rxfragstamp = ticks;
187 ni->ni_rxfrag[0] = mfrag;
194 ieee80211_deliver_data(struct ieee80211vap *vap,
195 struct ieee80211_node *ni, struct mbuf *m)
197 struct ether_header *eh = mtod(m, struct ether_header *);
198 struct ifnet *ifp = vap->iv_ifp;
200 /* NB: see hostap_deliver_data, this path doesn't handle hostap */
201 KASSERT(vap->iv_opmode != IEEE80211_M_HOSTAP, ("gack, hostap"));
206 IEEE80211_NODE_STAT(ni, rx_data);
207 IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len);
208 if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
209 m->m_flags |= M_MCAST; /* XXX M_BCAST? */
210 IEEE80211_NODE_STAT(ni, rx_mcast);
212 IEEE80211_NODE_STAT(ni, rx_ucast);
213 m->m_pkthdr.rcvif = ifp;
215 /* clear driver/net80211 flags before passing up */
216 m->m_flags &= ~M_80211_RX;
218 if (ni->ni_vlan != 0) {
219 /* attach vlan tag */
220 m->m_pkthdr.ether_vtag = ni->ni_vlan;
221 m->m_flags |= M_VLANTAG;
223 ifp->if_input(ifp, m);
227 ieee80211_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen)
229 struct ieee80211_qosframe_addr4 wh; /* Max size address frames */
230 struct ether_header *eh;
233 if (m->m_len < hdrlen + sizeof(*llc) &&
234 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
238 memcpy(&wh, mtod(m, caddr_t), hdrlen);
239 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
240 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
241 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
242 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
243 /* NB: preserve AppleTalk frames that have a native SNAP hdr */
244 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) ||
245 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
246 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
249 m_adj(m, hdrlen - sizeof(*eh));
251 eh = mtod(m, struct ether_header *);
252 switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
253 case IEEE80211_FC1_DIR_NODS:
254 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
255 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
257 case IEEE80211_FC1_DIR_TODS:
258 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
259 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
261 case IEEE80211_FC1_DIR_FROMDS:
262 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
263 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr3);
265 case IEEE80211_FC1_DIR_DSTODS:
266 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
267 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr4);
270 #ifdef ALIGNED_POINTER
271 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
272 struct mbuf *n, *n0, **np;
279 pktlen = m->m_pkthdr.len;
280 while (pktlen > off) {
282 MGETHDR(n, M_DONTWAIT, MT_DATA);
290 MGET(n, M_DONTWAIT, MT_DATA);
298 if (pktlen - off >= MINCLSIZE) {
299 MCLGET(n, M_DONTWAIT);
300 if (n->m_flags & M_EXT)
301 n->m_len = n->m_ext.ext_size;
305 (caddr_t)ALIGN(n->m_data + sizeof(*eh)) -
307 n->m_len -= newdata - n->m_data;
310 if (n->m_len > pktlen - off)
311 n->m_len = pktlen - off;
312 m_copydata(m, off, n->m_len, mtod(n, caddr_t));
320 #endif /* ALIGNED_POINTER */
322 eh = mtod(m, struct ether_header *);
323 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
329 * Decap a frame encapsulated in a fast-frame/A-MSDU.
332 ieee80211_decap1(struct mbuf *m, int *framelen)
334 #define FF_LLC_SIZE (sizeof(struct ether_header) + sizeof(struct llc))
335 struct ether_header *eh;
339 * The frame has an 802.3 header followed by an 802.2
340 * LLC header. The encapsulated frame length is in the
341 * first header type field; save that and overwrite it
342 * with the true type field found in the second. Then
343 * copy the 802.3 header up to where it belongs and
344 * adjust the mbuf contents to remove the void.
346 if (m->m_len < FF_LLC_SIZE && (m = m_pullup(m, FF_LLC_SIZE)) == NULL)
348 eh = mtod(m, struct ether_header *); /* 802.3 header is first */
349 llc = (struct llc *)&eh[1]; /* 802.2 header follows */
350 *framelen = ntohs(eh->ether_type) /* encap'd frame size */
351 + sizeof(struct ether_header) - sizeof(struct llc);
352 eh->ether_type = llc->llc_un.type_snap.ether_type;
353 ovbcopy(eh, mtod(m, uint8_t *) + sizeof(struct llc),
354 sizeof(struct ether_header));
355 m_adj(m, sizeof(struct llc));
361 * Decap the encapsulated frame pair and dispatch the first
362 * for delivery. The second frame is returned for delivery
363 * via the normal path.
366 ieee80211_decap_fastframe(struct ieee80211_node *ni, struct mbuf *m)
368 #define MS(x,f) (((x) & f) >> f##_S)
369 struct ieee80211vap *vap = ni->ni_vap;
374 m_copydata(m, 0, sizeof(uint32_t), (caddr_t) &ath);
375 if (MS(ath, ATH_FF_PROTO) != ATH_FF_PROTO_L2TUNNEL) {
376 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
377 ni->ni_macaddr, "fast-frame",
378 "unsupport tunnel protocol, header 0x%x", ath);
379 vap->iv_stats.is_ff_badhdr++;
383 /* NB: skip header and alignment padding */
384 m_adj(m, roundup(sizeof(uint32_t) - 2, 4) + 2);
386 vap->iv_stats.is_ff_decap++;
389 * Decap the first frame, bust it apart from the
390 * second and deliver; then decap the second frame
391 * and return it to the caller for normal delivery.
393 m = ieee80211_decap1(m, &framelen);
395 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
396 ni->ni_macaddr, "fast-frame", "%s", "first decap failed");
397 vap->iv_stats.is_ff_tooshort++;
400 n = m_split(m, framelen, M_NOWAIT);
402 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
403 ni->ni_macaddr, "fast-frame",
404 "%s", "unable to split encapsulated frames");
405 vap->iv_stats.is_ff_split++;
406 m_freem(m); /* NB: must reclaim */
409 /* XXX not right for WDS */
410 vap->iv_deliver_data(vap, ni, m); /* 1st of pair */
413 * Decap second frame.
415 m_adj(n, roundup2(framelen, 4) - framelen); /* padding */
416 n = ieee80211_decap1(n, &framelen);
418 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
419 ni->ni_macaddr, "fast-frame", "%s", "second decap failed");
420 vap->iv_stats.is_ff_tooshort++;
422 /* XXX verify framelen against mbuf contents */
423 return n; /* 2nd delivered by caller */
428 * Install received rate set information in the node's state block.
431 ieee80211_setup_rates(struct ieee80211_node *ni,
432 const uint8_t *rates, const uint8_t *xrates, int flags)
434 struct ieee80211vap *vap = ni->ni_vap;
435 struct ieee80211_rateset *rs = &ni->ni_rates;
437 memset(rs, 0, sizeof(*rs));
438 rs->rs_nrates = rates[1];
439 memcpy(rs->rs_rates, rates + 2, rs->rs_nrates);
440 if (xrates != NULL) {
443 * Tack on 11g extended supported rate element.
446 if (rs->rs_nrates + nxrates > IEEE80211_RATE_MAXSIZE) {
447 nxrates = IEEE80211_RATE_MAXSIZE - rs->rs_nrates;
448 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE, ni,
449 "extended rate set too large; only using "
450 "%u of %u rates", nxrates, xrates[1]);
451 vap->iv_stats.is_rx_rstoobig++;
453 memcpy(rs->rs_rates + rs->rs_nrates, xrates+2, nxrates);
454 rs->rs_nrates += nxrates;
456 return ieee80211_fix_rate(ni, rs, flags);
460 * Send a management frame error response to the specified
461 * station. If ni is associated with the station then use
462 * it; otherwise allocate a temporary node suitable for
463 * transmitting the frame and then free the reference so
464 * it will go away as soon as the frame has been transmitted.
467 ieee80211_send_error(struct ieee80211_node *ni,
468 const uint8_t mac[IEEE80211_ADDR_LEN], int subtype, int arg)
470 struct ieee80211vap *vap = ni->ni_vap;
473 if (ni == vap->iv_bss) {
474 if (vap->iv_state != IEEE80211_S_RUN) {
476 * XXX hack until we get rid of this routine.
477 * We can be called prior to the vap reaching
478 * run state under certain conditions in which
479 * case iv_bss->ni_chan will not be setup.
480 * Check for this explicitly and and just ignore
485 ni = ieee80211_tmp_node(vap, mac);
493 IEEE80211_SEND_MGMT(ni, subtype, arg);
495 ieee80211_free_node(ni);
499 ieee80211_alloc_challenge(struct ieee80211_node *ni)
501 if (ni->ni_challenge == NULL)
502 MALLOC(ni->ni_challenge, uint32_t*, IEEE80211_CHALLENGE_LEN,
503 M_80211_NODE, M_NOWAIT);
504 if (ni->ni_challenge == NULL) {
505 IEEE80211_NOTE(ni->ni_vap,
506 IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni,
507 "%s", "shared key challenge alloc failed");
510 return (ni->ni_challenge != NULL);
514 ieee80211_parse_ath(struct ieee80211_node *ni, uint8_t *ie)
516 const struct ieee80211_ath_ie *ath =
517 (const struct ieee80211_ath_ie *) ie;
519 ni->ni_ath_flags = ath->ath_capability;
520 ni->ni_ath_defkeyix = LE_READ_2(&ath->ath_defkeyix);
524 * Parse a Beacon or ProbeResponse frame and return the
525 * useful information in an ieee80211_scanparams structure.
526 * Status is set to 0 if no problems were found; otherwise
527 * a bitmask of IEEE80211_BPARSE_* items is returned that
528 * describes the problems detected.
531 ieee80211_parse_beacon(struct ieee80211_node *ni, struct mbuf *m,
532 struct ieee80211_scanparams *scan)
534 struct ieee80211vap *vap = ni->ni_vap;
535 struct ieee80211com *ic = ni->ni_ic;
536 struct ieee80211_frame *wh;
539 wh = mtod(m, struct ieee80211_frame *);
540 frm = (uint8_t *)&wh[1];
541 efrm = mtod(m, uint8_t *) + m->m_len;
544 * beacon/probe response frame format
546 * [2] beacon interval
547 * [2] capability information
549 * [tlv] supported rates
550 * [tlv] country information
551 * [tlv] parameter set (FH/DS)
552 * [tlv] erp information
553 * [tlv] extended supported rates
556 * [tlv] HT capabilities
557 * [tlv] HT information
558 * [tlv] Atheros capabilities
560 IEEE80211_VERIFY_LENGTH(efrm - frm, 12,
561 return (scan->status = IEEE80211_BPARSE_BADIELEN));
562 memset(scan, 0, sizeof(*scan));
563 scan->tstamp = frm; frm += 8;
564 scan->bintval = le16toh(*(uint16_t *)frm); frm += 2;
565 scan->capinfo = le16toh(*(uint16_t *)frm); frm += 2;
566 scan->bchan = ieee80211_chan2ieee(ic, ic->ic_curchan);
567 scan->chan = scan->bchan;
569 scan->ies_len = efrm - frm;
571 while (efrm - frm > 1) {
572 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2,
573 return (scan->status = IEEE80211_BPARSE_BADIELEN));
575 case IEEE80211_ELEMID_SSID:
578 case IEEE80211_ELEMID_RATES:
581 case IEEE80211_ELEMID_COUNTRY:
584 case IEEE80211_ELEMID_FHPARMS:
585 if (ic->ic_phytype == IEEE80211_T_FH) {
586 scan->fhdwell = LE_READ_2(&frm[2]);
587 scan->chan = IEEE80211_FH_CHAN(frm[4], frm[5]);
588 scan->fhindex = frm[6];
591 case IEEE80211_ELEMID_DSPARMS:
593 * XXX hack this since depending on phytype
594 * is problematic for multi-mode devices.
596 if (ic->ic_phytype != IEEE80211_T_FH)
599 case IEEE80211_ELEMID_TIM:
602 scan->timoff = frm - mtod(m, uint8_t *);
604 case IEEE80211_ELEMID_IBSSPARMS:
605 case IEEE80211_ELEMID_CFPARMS:
606 /* NB: avoid debugging complaints */
608 case IEEE80211_ELEMID_XRATES:
611 case IEEE80211_ELEMID_ERP:
613 IEEE80211_DISCARD_IE(vap,
614 IEEE80211_MSG_ELEMID, wh, "ERP",
615 "bad len %u", frm[1]);
616 vap->iv_stats.is_rx_elem_toobig++;
619 scan->erp = frm[2] | 0x100;
621 case IEEE80211_ELEMID_HTCAP:
624 case IEEE80211_ELEMID_RSN:
627 case IEEE80211_ELEMID_HTINFO:
630 case IEEE80211_ELEMID_VENDOR:
633 else if (iswmeparam(frm) || iswmeinfo(frm))
635 else if (isatherosoui(frm))
637 else if (vap->iv_flags_ext & IEEE80211_FEXT_HTCOMPAT) {
639 * Accept pre-draft HT ie's if the
640 * standard ones have not been seen.
642 if (ishtcapoui(frm)) {
643 if (scan->htcap == NULL)
645 } else if (ishtinfooui(frm)) {
646 if (scan->htinfo == NULL)
652 IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID,
654 "id %u, len %u", *frm, frm[1]);
655 vap->iv_stats.is_rx_elem_unknown++;
660 IEEE80211_VERIFY_ELEMENT(scan->rates, IEEE80211_RATE_MAXSIZE,
661 scan->status |= IEEE80211_BPARSE_RATES_INVALID);
662 if (scan->rates != NULL && scan->xrates != NULL) {
664 * NB: don't process XRATES if RATES is missing. This
665 * avoids a potential null ptr deref and should be ok
666 * as the return code will already note RATES is missing
667 * (so callers shouldn't otherwise process the frame).
669 IEEE80211_VERIFY_ELEMENT(scan->xrates,
670 IEEE80211_RATE_MAXSIZE - scan->rates[1],
671 scan->status |= IEEE80211_BPARSE_XRATES_INVALID);
673 IEEE80211_VERIFY_ELEMENT(scan->ssid, IEEE80211_NWID_LEN,
674 scan->status |= IEEE80211_BPARSE_SSID_INVALID);
675 #if IEEE80211_CHAN_MAX < 255
676 if (scan->chan > IEEE80211_CHAN_MAX) {
677 IEEE80211_DISCARD(vap, IEEE80211_MSG_ELEMID,
678 wh, NULL, "invalid channel %u", scan->chan);
679 vap->iv_stats.is_rx_badchan++;
680 scan->status |= IEEE80211_BPARSE_CHAN_INVALID;
683 if (scan->chan != scan->bchan && ic->ic_phytype != IEEE80211_T_FH) {
685 * Frame was received on a channel different from the
686 * one indicated in the DS params element id;
687 * silently discard it.
689 * NB: this can happen due to signal leakage.
690 * But we should take it for FH phy because
691 * the rssi value should be correct even for
692 * different hop pattern in FH.
694 IEEE80211_DISCARD(vap,
695 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
696 wh, NULL, "for off-channel %u", scan->chan);
697 vap->iv_stats.is_rx_chanmismatch++;
698 scan->status |= IEEE80211_BPARSE_OFFCHAN;
700 if (!(IEEE80211_BINTVAL_MIN <= scan->bintval &&
701 scan->bintval <= IEEE80211_BINTVAL_MAX)) {
702 IEEE80211_DISCARD(vap,
703 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
704 wh, NULL, "bogus beacon interval", scan->bintval);
705 vap->iv_stats.is_rx_badbintval++;
706 scan->status |= IEEE80211_BPARSE_BINTVAL_INVALID;
708 if (scan->country != NULL) {
710 * Validate we have at least enough data to extract
711 * the country code. Not sure if we should return an
712 * error instead of discarding the IE; consider this
713 * being lenient as we don't depend on the data for
716 IEEE80211_VERIFY_LENGTH(scan->country[1], 3 * sizeof(uint8_t),
717 scan->country = NULL);
720 * Process HT ie's. This is complicated by our
721 * accepting both the standard ie's and the pre-draft
722 * vendor OUI ie's that some vendors still use/require.
724 if (scan->htcap != NULL) {
725 IEEE80211_VERIFY_LENGTH(scan->htcap[1],
726 scan->htcap[0] == IEEE80211_ELEMID_VENDOR ?
727 4 + sizeof(struct ieee80211_ie_htcap)-2 :
728 sizeof(struct ieee80211_ie_htcap)-2,
731 if (scan->htinfo != NULL) {
732 IEEE80211_VERIFY_LENGTH(scan->htinfo[1],
733 scan->htinfo[0] == IEEE80211_ELEMID_VENDOR ?
734 4 + sizeof(struct ieee80211_ie_htinfo)-2 :
735 sizeof(struct ieee80211_ie_htinfo)-2,
736 scan->htinfo = NULL);
742 * Parse an Action frame. Return 0 on success, non-zero on failure.
745 ieee80211_parse_action(struct ieee80211_node *ni, struct mbuf *m)
747 struct ieee80211vap *vap = ni->ni_vap;
748 const struct ieee80211_action *ia;
749 struct ieee80211_frame *wh;
753 * action frame format:
758 wh = mtod(m, struct ieee80211_frame *);
759 frm = (u_int8_t *)&wh[1];
760 efrm = mtod(m, u_int8_t *) + m->m_len;
761 IEEE80211_VERIFY_LENGTH(efrm - frm,
762 sizeof(struct ieee80211_action), return EINVAL);
763 ia = (const struct ieee80211_action *) frm;
765 vap->iv_stats.is_rx_action++;
766 IEEE80211_NODE_STAT(ni, rx_action);
768 /* verify frame payloads but defer processing */
769 /* XXX maybe push this to method */
770 switch (ia->ia_category) {
771 case IEEE80211_ACTION_CAT_BA:
772 switch (ia->ia_action) {
773 case IEEE80211_ACTION_BA_ADDBA_REQUEST:
774 IEEE80211_VERIFY_LENGTH(efrm - frm,
775 sizeof(struct ieee80211_action_ba_addbarequest),
778 case IEEE80211_ACTION_BA_ADDBA_RESPONSE:
779 IEEE80211_VERIFY_LENGTH(efrm - frm,
780 sizeof(struct ieee80211_action_ba_addbaresponse),
783 case IEEE80211_ACTION_BA_DELBA:
784 IEEE80211_VERIFY_LENGTH(efrm - frm,
785 sizeof(struct ieee80211_action_ba_delba),
790 case IEEE80211_ACTION_CAT_HT:
791 switch (ia->ia_action) {
792 case IEEE80211_ACTION_HT_TXCHWIDTH:
793 IEEE80211_VERIFY_LENGTH(efrm - frm,
794 sizeof(struct ieee80211_action_ht_txchwidth),
797 case IEEE80211_ACTION_HT_MIMOPWRSAVE:
798 IEEE80211_VERIFY_LENGTH(efrm - frm,
799 sizeof(struct ieee80211_action_ht_mimopowersave),
808 #ifdef IEEE80211_DEBUG
813 ieee80211_ssid_mismatch(struct ieee80211vap *vap, const char *tag,
814 uint8_t mac[IEEE80211_ADDR_LEN], uint8_t *ssid)
816 printf("[%s] discard %s frame, ssid mismatch: ",
817 ether_sprintf(mac), tag);
818 ieee80211_print_essid(ssid + 2, ssid[1]);
823 * Return the bssid of a frame.
825 static const uint8_t *
826 ieee80211_getbssid(struct ieee80211vap *vap, const struct ieee80211_frame *wh)
828 if (vap->iv_opmode == IEEE80211_M_STA)
830 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) != IEEE80211_FC1_DIR_NODS)
832 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
837 #include <machine/stdarg.h>
840 ieee80211_note(struct ieee80211vap *vap, const char *fmt, ...)
842 char buf[128]; /* XXX */
846 vsnprintf(buf, sizeof(buf), fmt, ap);
849 if_printf(vap->iv_ifp, "%s", buf); /* NB: no \n */
853 ieee80211_note_frame(struct ieee80211vap *vap,
854 const struct ieee80211_frame *wh,
855 const char *fmt, ...)
857 char buf[128]; /* XXX */
861 vsnprintf(buf, sizeof(buf), fmt, ap);
863 if_printf(vap->iv_ifp, "[%s] %s\n",
864 ether_sprintf(ieee80211_getbssid(vap, wh)), buf);
868 ieee80211_note_mac(struct ieee80211vap *vap,
869 const uint8_t mac[IEEE80211_ADDR_LEN],
870 const char *fmt, ...)
872 char buf[128]; /* XXX */
876 vsnprintf(buf, sizeof(buf), fmt, ap);
878 if_printf(vap->iv_ifp, "[%s] %s\n", ether_sprintf(mac), buf);
882 ieee80211_discard_frame(struct ieee80211vap *vap,
883 const struct ieee80211_frame *wh,
884 const char *type, const char *fmt, ...)
888 if_printf(vap->iv_ifp, "[%s] discard ",
889 ether_sprintf(ieee80211_getbssid(vap, wh)));
891 printf("%s frame, ", ieee80211_mgt_subtype_name[
892 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) >>
893 IEEE80211_FC0_SUBTYPE_SHIFT]);
895 printf("%s frame, ", type);
903 ieee80211_discard_ie(struct ieee80211vap *vap,
904 const struct ieee80211_frame *wh,
905 const char *type, const char *fmt, ...)
909 if_printf(vap->iv_ifp, "[%s] discard ",
910 ether_sprintf(ieee80211_getbssid(vap, wh)));
912 printf("%s information element, ", type);
914 printf("information element, ");
922 ieee80211_discard_mac(struct ieee80211vap *vap,
923 const uint8_t mac[IEEE80211_ADDR_LEN],
924 const char *type, const char *fmt, ...)
928 if_printf(vap->iv_ifp, "[%s] discard ", ether_sprintf(mac));
930 printf("%s frame, ", type);
938 #endif /* IEEE80211_DEBUG */