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.
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>
49 #ifdef IEEE80211_SUPPORT_MESH
50 #include <net80211/ieee80211_mesh.h>
56 #include <netinet/in.h>
57 #include <net/ethernet.h>
61 ieee80211_process_mimo(struct ieee80211_node *ni, struct ieee80211_rx_stats *rx)
65 /* Verify the required MIMO bits are set */
66 if ((rx->r_flags & (IEEE80211_R_C_CHAIN | IEEE80211_R_C_NF | IEEE80211_R_C_RSSI)) !=
67 (IEEE80211_R_C_CHAIN | IEEE80211_R_C_NF | IEEE80211_R_C_RSSI))
70 /* XXX This assumes the MIMO radios have both ctl and ext chains */
71 for (i = 0; i < MIN(rx->c_chain, IEEE80211_MAX_CHAINS); i++) {
72 IEEE80211_RSSI_LPF(ni->ni_mimo_rssi_ctl[i], rx->c_rssi_ctl[i]);
73 IEEE80211_RSSI_LPF(ni->ni_mimo_rssi_ext[i], rx->c_rssi_ext[i]);
76 /* XXX This also assumes the MIMO radios have both ctl and ext chains */
77 for(i = 0; i < MIN(rx->c_chain, IEEE80211_MAX_CHAINS); i++) {
78 ni->ni_mimo_noise_ctl[i] = rx->c_nf_ctl[i];
79 ni->ni_mimo_noise_ext[i] = rx->c_nf_ext[i];
81 ni->ni_mimo_chains = rx->c_chain;
85 ieee80211_input_mimo(struct ieee80211_node *ni, struct mbuf *m,
86 struct ieee80211_rx_stats *rx)
88 /* XXX should assert IEEE80211_R_NF and IEEE80211_R_RSSI are set */
89 ieee80211_process_mimo(ni, rx);
90 return ieee80211_input(ni, m, rx->rssi, rx->nf);
94 ieee80211_input_all(struct ieee80211com *ic, struct mbuf *m, int rssi, int nf)
96 struct ieee80211_rx_stats rx;
98 rx.r_flags = IEEE80211_R_NF | IEEE80211_R_RSSI;
101 return ieee80211_input_mimo_all(ic, m, &rx);
105 ieee80211_input_mimo_all(struct ieee80211com *ic, struct mbuf *m,
106 struct ieee80211_rx_stats *rx)
108 struct ieee80211vap *vap;
111 m->m_flags |= M_BCAST; /* NB: mark for bpf tap'ing */
114 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
115 struct ieee80211_node *ni;
118 /* NB: could check for IFF_UP but this is cheaper */
119 if (vap->iv_state == IEEE80211_S_INIT)
122 * WDS vap's only receive directed traffic from the
123 * station at the ``far end''. That traffic should
124 * be passed through the AP vap the station is associated
125 * to--so don't spam them with mcast frames.
127 if (vap->iv_opmode == IEEE80211_M_WDS)
129 if (TAILQ_NEXT(vap, iv_next) != NULL) {
131 * Packet contents are changed by ieee80211_decap
132 * so do a deep copy of the packet.
134 mcopy = m_dup(m, M_DONTWAIT);
143 ni = ieee80211_ref_node(vap->iv_bss);
144 type = ieee80211_input_mimo(ni, mcopy, rx);
145 ieee80211_free_node(ni);
147 if (m != NULL) /* no vaps, reclaim mbuf */
153 * This function reassembles fragments.
155 * XXX should handle 3 concurrent reassemblies per-spec.
158 ieee80211_defrag(struct ieee80211_node *ni, struct mbuf *m, int hdrspace)
160 struct ieee80211vap *vap = ni->ni_vap;
161 struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *);
162 struct ieee80211_frame *lwh;
165 uint8_t more_frag = wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG;
168 KASSERT(!IEEE80211_IS_MULTICAST(wh->i_addr1), ("multicast fragm?"));
170 rxseq = le16toh(*(uint16_t *)wh->i_seq);
171 fragno = rxseq & IEEE80211_SEQ_FRAG_MASK;
173 /* Quick way out, if there's nothing to defragment */
174 if (!more_frag && fragno == 0 && ni->ni_rxfrag[0] == NULL)
178 * Remove frag to insure it doesn't get reaped by timer.
180 if (ni->ni_table == NULL) {
182 * Should never happen. If the node is orphaned (not in
183 * the table) then input packets should not reach here.
184 * Otherwise, a concurrent request that yanks the table
185 * should be blocked by other interlocking and/or by first
186 * shutting the driver down. Regardless, be defensive
189 /* XXX need msg+stat */
193 IEEE80211_NODE_LOCK(ni->ni_table);
194 mfrag = ni->ni_rxfrag[0];
195 ni->ni_rxfrag[0] = NULL;
196 IEEE80211_NODE_UNLOCK(ni->ni_table);
199 * Validate new fragment is in order and
200 * related to the previous ones.
205 lwh = mtod(mfrag, struct ieee80211_frame *);
206 last_rxseq = le16toh(*(uint16_t *)lwh->i_seq);
207 /* NB: check seq # and frag together */
208 if (rxseq != last_rxseq+1 ||
209 !IEEE80211_ADDR_EQ(wh->i_addr1, lwh->i_addr1) ||
210 !IEEE80211_ADDR_EQ(wh->i_addr2, lwh->i_addr2)) {
212 * Unrelated fragment or no space for it,
213 * clear current fragments.
221 if (fragno != 0) { /* !first fragment, discard */
222 vap->iv_stats.is_rx_defrag++;
223 IEEE80211_NODE_STAT(ni, rx_defrag);
228 } else { /* concatenate */
229 m_adj(m, hdrspace); /* strip header */
231 /* NB: m_cat doesn't update the packet header */
232 mfrag->m_pkthdr.len += m->m_pkthdr.len;
233 /* track last seqnum and fragno */
234 lwh = mtod(mfrag, struct ieee80211_frame *);
235 *(uint16_t *) lwh->i_seq = *(uint16_t *) wh->i_seq;
237 if (more_frag) { /* more to come, save */
238 ni->ni_rxfragstamp = ticks;
239 ni->ni_rxfrag[0] = mfrag;
246 ieee80211_deliver_data(struct ieee80211vap *vap,
247 struct ieee80211_node *ni, struct mbuf *m)
249 struct ether_header *eh = mtod(m, struct ether_header *);
250 struct ifnet *ifp = vap->iv_ifp;
252 /* clear driver/net80211 flags before passing up */
253 m->m_flags &= ~(M_80211_RX | M_MCAST | M_BCAST);
255 /* NB: see hostap_deliver_data, this path doesn't handle hostap */
256 KASSERT(vap->iv_opmode != IEEE80211_M_HOSTAP, ("gack, hostap"));
261 IEEE80211_NODE_STAT(ni, rx_data);
262 IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len);
263 if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
264 m->m_flags |= M_MCAST; /* XXX M_BCAST? */
265 IEEE80211_NODE_STAT(ni, rx_mcast);
267 IEEE80211_NODE_STAT(ni, rx_ucast);
268 m->m_pkthdr.rcvif = ifp;
270 if (ni->ni_vlan != 0) {
271 /* attach vlan tag */
272 m->m_pkthdr.ether_vtag = ni->ni_vlan;
273 m->m_flags |= M_VLANTAG;
275 ifp->if_input(ifp, m);
279 ieee80211_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen)
281 struct ieee80211_qosframe_addr4 wh;
282 struct ether_header *eh;
285 KASSERT(hdrlen <= sizeof(wh),
286 ("hdrlen %d > max %zd", hdrlen, sizeof(wh)));
288 if (m->m_len < hdrlen + sizeof(*llc) &&
289 (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
290 vap->iv_stats.is_rx_tooshort++;
294 memcpy(&wh, mtod(m, caddr_t), hdrlen);
295 llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
296 if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
297 llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
298 llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
299 /* NB: preserve AppleTalk frames that have a native SNAP hdr */
300 !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) ||
301 llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
302 m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
305 m_adj(m, hdrlen - sizeof(*eh));
307 eh = mtod(m, struct ether_header *);
308 switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
309 case IEEE80211_FC1_DIR_NODS:
310 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
311 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
313 case IEEE80211_FC1_DIR_TODS:
314 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
315 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr2);
317 case IEEE80211_FC1_DIR_FROMDS:
318 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr1);
319 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr3);
321 case IEEE80211_FC1_DIR_DSTODS:
322 IEEE80211_ADDR_COPY(eh->ether_dhost, wh.i_addr3);
323 IEEE80211_ADDR_COPY(eh->ether_shost, wh.i_addr4);
326 #ifdef ALIGNED_POINTER
327 if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
328 m = ieee80211_realign(vap, m, sizeof(*eh));
332 #endif /* ALIGNED_POINTER */
334 eh = mtod(m, struct ether_header *);
335 eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
341 * Decap a frame encapsulated in a fast-frame/A-MSDU.
344 ieee80211_decap1(struct mbuf *m, int *framelen)
346 #define FF_LLC_SIZE (sizeof(struct ether_header) + sizeof(struct llc))
347 struct ether_header *eh;
351 * The frame has an 802.3 header followed by an 802.2
352 * LLC header. The encapsulated frame length is in the
353 * first header type field; save that and overwrite it
354 * with the true type field found in the second. Then
355 * copy the 802.3 header up to where it belongs and
356 * adjust the mbuf contents to remove the void.
358 if (m->m_len < FF_LLC_SIZE && (m = m_pullup(m, FF_LLC_SIZE)) == NULL)
360 eh = mtod(m, struct ether_header *); /* 802.3 header is first */
361 llc = (struct llc *)&eh[1]; /* 802.2 header follows */
362 *framelen = ntohs(eh->ether_type) /* encap'd frame size */
363 + sizeof(struct ether_header) - sizeof(struct llc);
364 eh->ether_type = llc->llc_un.type_snap.ether_type;
365 ovbcopy(eh, mtod(m, uint8_t *) + sizeof(struct llc),
366 sizeof(struct ether_header));
367 m_adj(m, sizeof(struct llc));
373 * Install received rate set information in the node's state block.
376 ieee80211_setup_rates(struct ieee80211_node *ni,
377 const uint8_t *rates, const uint8_t *xrates, int flags)
379 struct ieee80211vap *vap = ni->ni_vap;
380 struct ieee80211_rateset *rs = &ni->ni_rates;
382 memset(rs, 0, sizeof(*rs));
383 rs->rs_nrates = rates[1];
384 memcpy(rs->rs_rates, rates + 2, rs->rs_nrates);
385 if (xrates != NULL) {
388 * Tack on 11g extended supported rate element.
391 if (rs->rs_nrates + nxrates > IEEE80211_RATE_MAXSIZE) {
392 nxrates = IEEE80211_RATE_MAXSIZE - rs->rs_nrates;
393 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE, ni,
394 "extended rate set too large; only using "
395 "%u of %u rates", nxrates, xrates[1]);
396 vap->iv_stats.is_rx_rstoobig++;
398 memcpy(rs->rs_rates + rs->rs_nrates, xrates+2, nxrates);
399 rs->rs_nrates += nxrates;
401 return ieee80211_fix_rate(ni, rs, flags);
405 * Send a management frame error response to the specified
406 * station. If ni is associated with the station then use
407 * it; otherwise allocate a temporary node suitable for
408 * transmitting the frame and then free the reference so
409 * it will go away as soon as the frame has been transmitted.
412 ieee80211_send_error(struct ieee80211_node *ni,
413 const uint8_t mac[IEEE80211_ADDR_LEN], int subtype, int arg)
415 struct ieee80211vap *vap = ni->ni_vap;
418 if (ni == vap->iv_bss) {
419 if (vap->iv_state != IEEE80211_S_RUN) {
421 * XXX hack until we get rid of this routine.
422 * We can be called prior to the vap reaching
423 * run state under certain conditions in which
424 * case iv_bss->ni_chan will not be setup.
425 * Check for this explicitly and and just ignore
430 ni = ieee80211_tmp_node(vap, mac);
438 IEEE80211_SEND_MGMT(ni, subtype, arg);
440 ieee80211_free_node(ni);
444 ieee80211_alloc_challenge(struct ieee80211_node *ni)
446 if (ni->ni_challenge == NULL)
447 ni->ni_challenge = (uint32_t *) malloc(IEEE80211_CHALLENGE_LEN,
448 M_80211_NODE, M_NOWAIT);
449 if (ni->ni_challenge == NULL) {
450 IEEE80211_NOTE(ni->ni_vap,
451 IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni,
452 "%s", "shared key challenge alloc failed");
455 return (ni->ni_challenge != NULL);
459 * Parse a Beacon or ProbeResponse frame and return the
460 * useful information in an ieee80211_scanparams structure.
461 * Status is set to 0 if no problems were found; otherwise
462 * a bitmask of IEEE80211_BPARSE_* items is returned that
463 * describes the problems detected.
466 ieee80211_parse_beacon(struct ieee80211_node *ni, struct mbuf *m,
467 struct ieee80211_scanparams *scan)
469 struct ieee80211vap *vap = ni->ni_vap;
470 struct ieee80211com *ic = ni->ni_ic;
471 struct ieee80211_frame *wh;
474 wh = mtod(m, struct ieee80211_frame *);
475 frm = (uint8_t *)&wh[1];
476 efrm = mtod(m, uint8_t *) + m->m_len;
479 * beacon/probe response frame format
481 * [2] beacon interval
482 * [2] capability information
484 * [tlv] supported rates
485 * [tlv] country information
486 * [tlv] channel switch announcement (CSA)
487 * [tlv] parameter set (FH/DS)
488 * [tlv] erp information
489 * [tlv] extended supported rates
492 * [tlv] HT capabilities
493 * [tlv] HT information
494 * [tlv] Atheros capabilities
496 * [tlv] Mesh Configuration
498 IEEE80211_VERIFY_LENGTH(efrm - frm, 12,
499 return (scan->status = IEEE80211_BPARSE_BADIELEN));
500 memset(scan, 0, sizeof(*scan));
501 scan->tstamp = frm; frm += 8;
502 scan->bintval = le16toh(*(uint16_t *)frm); frm += 2;
503 scan->capinfo = le16toh(*(uint16_t *)frm); frm += 2;
504 scan->bchan = ieee80211_chan2ieee(ic, ic->ic_curchan);
505 scan->chan = scan->bchan;
507 scan->ies_len = efrm - frm;
509 while (efrm - frm > 1) {
510 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2,
511 return (scan->status = IEEE80211_BPARSE_BADIELEN));
513 case IEEE80211_ELEMID_SSID:
516 case IEEE80211_ELEMID_RATES:
519 case IEEE80211_ELEMID_COUNTRY:
522 case IEEE80211_ELEMID_CSA:
525 case IEEE80211_ELEMID_QUIET:
528 case IEEE80211_ELEMID_FHPARMS:
529 if (ic->ic_phytype == IEEE80211_T_FH) {
530 scan->fhdwell = LE_READ_2(&frm[2]);
531 scan->chan = IEEE80211_FH_CHAN(frm[4], frm[5]);
532 scan->fhindex = frm[6];
535 case IEEE80211_ELEMID_DSPARMS:
537 * XXX hack this since depending on phytype
538 * is problematic for multi-mode devices.
540 if (ic->ic_phytype != IEEE80211_T_FH)
543 case IEEE80211_ELEMID_TIM:
546 scan->timoff = frm - mtod(m, uint8_t *);
548 case IEEE80211_ELEMID_IBSSPARMS:
549 case IEEE80211_ELEMID_CFPARMS:
550 case IEEE80211_ELEMID_PWRCNSTR:
551 /* NB: avoid debugging complaints */
553 case IEEE80211_ELEMID_XRATES:
556 case IEEE80211_ELEMID_ERP:
558 IEEE80211_DISCARD_IE(vap,
559 IEEE80211_MSG_ELEMID, wh, "ERP",
560 "bad len %u", frm[1]);
561 vap->iv_stats.is_rx_elem_toobig++;
564 scan->erp = frm[2] | 0x100;
566 case IEEE80211_ELEMID_HTCAP:
569 case IEEE80211_ELEMID_RSN:
572 case IEEE80211_ELEMID_HTINFO:
575 #ifdef IEEE80211_SUPPORT_MESH
576 case IEEE80211_ELEMID_MESHID:
579 case IEEE80211_ELEMID_MESHCONF:
580 scan->meshconf = frm;
583 case IEEE80211_ELEMID_VENDOR:
586 else if (iswmeparam(frm) || iswmeinfo(frm))
588 #ifdef IEEE80211_SUPPORT_SUPERG
589 else if (isatherosoui(frm))
592 #ifdef IEEE80211_SUPPORT_TDMA
593 else if (istdmaoui(frm))
596 else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) {
598 * Accept pre-draft HT ie's if the
599 * standard ones have not been seen.
601 if (ishtcapoui(frm)) {
602 if (scan->htcap == NULL)
604 } else if (ishtinfooui(frm)) {
605 if (scan->htinfo == NULL)
611 IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID,
613 "id %u, len %u", *frm, frm[1]);
614 vap->iv_stats.is_rx_elem_unknown++;
619 IEEE80211_VERIFY_ELEMENT(scan->rates, IEEE80211_RATE_MAXSIZE,
620 scan->status |= IEEE80211_BPARSE_RATES_INVALID);
621 if (scan->rates != NULL && scan->xrates != NULL) {
623 * NB: don't process XRATES if RATES is missing. This
624 * avoids a potential null ptr deref and should be ok
625 * as the return code will already note RATES is missing
626 * (so callers shouldn't otherwise process the frame).
628 IEEE80211_VERIFY_ELEMENT(scan->xrates,
629 IEEE80211_RATE_MAXSIZE - scan->rates[1],
630 scan->status |= IEEE80211_BPARSE_XRATES_INVALID);
632 IEEE80211_VERIFY_ELEMENT(scan->ssid, IEEE80211_NWID_LEN,
633 scan->status |= IEEE80211_BPARSE_SSID_INVALID);
634 if (scan->chan != scan->bchan && ic->ic_phytype != IEEE80211_T_FH) {
636 * Frame was received on a channel different from the
637 * one indicated in the DS params element id;
638 * silently discard it.
640 * NB: this can happen due to signal leakage.
641 * But we should take it for FH phy because
642 * the rssi value should be correct even for
643 * different hop pattern in FH.
645 IEEE80211_DISCARD(vap,
646 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
647 wh, NULL, "for off-channel %u", scan->chan);
648 vap->iv_stats.is_rx_chanmismatch++;
649 scan->status |= IEEE80211_BPARSE_OFFCHAN;
651 if (!(IEEE80211_BINTVAL_MIN <= scan->bintval &&
652 scan->bintval <= IEEE80211_BINTVAL_MAX)) {
653 IEEE80211_DISCARD(vap,
654 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
655 wh, NULL, "bogus beacon interval (%d TU)",
656 (int) scan->bintval);
657 vap->iv_stats.is_rx_badbintval++;
658 scan->status |= IEEE80211_BPARSE_BINTVAL_INVALID;
660 if (scan->country != NULL) {
662 * Validate we have at least enough data to extract
663 * the country code. Not sure if we should return an
664 * error instead of discarding the IE; consider this
665 * being lenient as we don't depend on the data for
668 IEEE80211_VERIFY_LENGTH(scan->country[1], 3 * sizeof(uint8_t),
669 scan->country = NULL);
671 if (scan->csa != NULL) {
673 * Validate Channel Switch Announcement; this must
674 * be the correct length or we toss the frame.
676 IEEE80211_VERIFY_LENGTH(scan->csa[1], 3 * sizeof(uint8_t),
677 scan->status |= IEEE80211_BPARSE_CSA_INVALID);
680 * Process HT ie's. This is complicated by our
681 * accepting both the standard ie's and the pre-draft
682 * vendor OUI ie's that some vendors still use/require.
684 if (scan->htcap != NULL) {
685 IEEE80211_VERIFY_LENGTH(scan->htcap[1],
686 scan->htcap[0] == IEEE80211_ELEMID_VENDOR ?
687 4 + sizeof(struct ieee80211_ie_htcap)-2 :
688 sizeof(struct ieee80211_ie_htcap)-2,
691 if (scan->htinfo != NULL) {
692 IEEE80211_VERIFY_LENGTH(scan->htinfo[1],
693 scan->htinfo[0] == IEEE80211_ELEMID_VENDOR ?
694 4 + sizeof(struct ieee80211_ie_htinfo)-2 :
695 sizeof(struct ieee80211_ie_htinfo)-2,
696 scan->htinfo = NULL);
702 * Parse an Action frame. Return 0 on success, non-zero on failure.
705 ieee80211_parse_action(struct ieee80211_node *ni, struct mbuf *m)
707 struct ieee80211vap *vap = ni->ni_vap;
708 const struct ieee80211_action *ia;
709 struct ieee80211_frame *wh;
713 * action frame format:
718 wh = mtod(m, struct ieee80211_frame *);
719 frm = (u_int8_t *)&wh[1];
720 efrm = mtod(m, u_int8_t *) + m->m_len;
721 IEEE80211_VERIFY_LENGTH(efrm - frm,
722 sizeof(struct ieee80211_action), return EINVAL);
723 ia = (const struct ieee80211_action *) frm;
725 vap->iv_stats.is_rx_action++;
726 IEEE80211_NODE_STAT(ni, rx_action);
728 /* verify frame payloads but defer processing */
729 switch (ia->ia_category) {
730 case IEEE80211_ACTION_CAT_BA:
731 switch (ia->ia_action) {
732 case IEEE80211_ACTION_BA_ADDBA_REQUEST:
733 IEEE80211_VERIFY_LENGTH(efrm - frm,
734 sizeof(struct ieee80211_action_ba_addbarequest),
737 case IEEE80211_ACTION_BA_ADDBA_RESPONSE:
738 IEEE80211_VERIFY_LENGTH(efrm - frm,
739 sizeof(struct ieee80211_action_ba_addbaresponse),
742 case IEEE80211_ACTION_BA_DELBA:
743 IEEE80211_VERIFY_LENGTH(efrm - frm,
744 sizeof(struct ieee80211_action_ba_delba),
749 case IEEE80211_ACTION_CAT_HT:
750 switch (ia->ia_action) {
751 case IEEE80211_ACTION_HT_TXCHWIDTH:
752 IEEE80211_VERIFY_LENGTH(efrm - frm,
753 sizeof(struct ieee80211_action_ht_txchwidth),
756 case IEEE80211_ACTION_HT_MIMOPWRSAVE:
757 IEEE80211_VERIFY_LENGTH(efrm - frm,
758 sizeof(struct ieee80211_action_ht_mimopowersave),
763 #ifdef IEEE80211_SUPPORT_MESH
764 case IEEE80211_ACTION_CAT_MESH:
765 switch (ia->ia_action) {
766 case IEEE80211_ACTION_MESH_LMETRIC:
768 * XXX: verification is true only if we are using
769 * Airtime link metric (default)
771 IEEE80211_VERIFY_LENGTH(efrm - frm,
772 sizeof(struct ieee80211_meshlmetric_ie),
775 case IEEE80211_ACTION_MESH_HWMP:
776 /* verify something */
778 case IEEE80211_ACTION_MESH_GANN:
779 case IEEE80211_ACTION_MESH_CC:
780 case IEEE80211_ACTION_MESH_MCCA_SREQ:
781 case IEEE80211_ACTION_MESH_MCCA_SREP:
782 case IEEE80211_ACTION_MESH_MCCA_AREQ:
783 case IEEE80211_ACTION_MESH_MCCA_ADVER:
784 case IEEE80211_ACTION_MESH_MCCA_TRDOWN:
785 case IEEE80211_ACTION_MESH_TBTT_REQ:
786 case IEEE80211_ACTION_MESH_TBTT_RES:
787 /* reject these early on, not implemented */
788 IEEE80211_DISCARD(vap,
789 IEEE80211_MSG_ELEMID | IEEE80211_MSG_INPUT,
790 wh, NULL, "not implemented yet, act=0x%02X",
795 case IEEE80211_ACTION_CAT_SELF_PROT:
796 /* If TA or RA group address discard silently */
797 if (IEEE80211_IS_MULTICAST(wh->i_addr1) ||
798 IEEE80211_IS_MULTICAST(wh->i_addr2))
801 * XXX: Should we verify complete length now or it is
802 * to varying in sizes?
804 switch (ia->ia_action) {
805 case IEEE80211_ACTION_MESHPEERING_CONFIRM:
806 case IEEE80211_ACTION_MESHPEERING_CLOSE:
807 /* is not a peering candidate (yet) */
808 if (ni == vap->iv_bss)
818 #ifdef IEEE80211_DEBUG
823 ieee80211_ssid_mismatch(struct ieee80211vap *vap, const char *tag,
824 uint8_t mac[IEEE80211_ADDR_LEN], uint8_t *ssid)
826 printf("[%s] discard %s frame, ssid mismatch: ",
827 ether_sprintf(mac), tag);
828 ieee80211_print_essid(ssid + 2, ssid[1]);
833 * Return the bssid of a frame.
835 static const uint8_t *
836 ieee80211_getbssid(const struct ieee80211vap *vap,
837 const struct ieee80211_frame *wh)
839 if (vap->iv_opmode == IEEE80211_M_STA)
841 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) != IEEE80211_FC1_DIR_NODS)
843 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
848 #include <machine/stdarg.h>
851 ieee80211_note(const struct ieee80211vap *vap, const char *fmt, ...)
853 char buf[128]; /* XXX */
857 vsnprintf(buf, sizeof(buf), fmt, ap);
860 if_printf(vap->iv_ifp, "%s", buf); /* NB: no \n */
864 ieee80211_note_frame(const struct ieee80211vap *vap,
865 const struct ieee80211_frame *wh,
866 const char *fmt, ...)
868 char buf[128]; /* XXX */
872 vsnprintf(buf, sizeof(buf), fmt, ap);
874 if_printf(vap->iv_ifp, "[%s] %s\n",
875 ether_sprintf(ieee80211_getbssid(vap, wh)), buf);
879 ieee80211_note_mac(const struct ieee80211vap *vap,
880 const uint8_t mac[IEEE80211_ADDR_LEN],
881 const char *fmt, ...)
883 char buf[128]; /* XXX */
887 vsnprintf(buf, sizeof(buf), fmt, ap);
889 if_printf(vap->iv_ifp, "[%s] %s\n", ether_sprintf(mac), buf);
893 ieee80211_discard_frame(const struct ieee80211vap *vap,
894 const struct ieee80211_frame *wh,
895 const char *type, const char *fmt, ...)
899 if_printf(vap->iv_ifp, "[%s] discard ",
900 ether_sprintf(ieee80211_getbssid(vap, wh)));
902 printf("%s frame, ", ieee80211_mgt_subtype_name[
903 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) >>
904 IEEE80211_FC0_SUBTYPE_SHIFT]);
906 printf("%s frame, ", type);
914 ieee80211_discard_ie(const struct ieee80211vap *vap,
915 const struct ieee80211_frame *wh,
916 const char *type, const char *fmt, ...)
920 if_printf(vap->iv_ifp, "[%s] discard ",
921 ether_sprintf(ieee80211_getbssid(vap, wh)));
923 printf("%s information element, ", type);
925 printf("information element, ");
933 ieee80211_discard_mac(const struct ieee80211vap *vap,
934 const uint8_t mac[IEEE80211_ADDR_LEN],
935 const char *type, const char *fmt, ...)
939 if_printf(vap->iv_ifp, "[%s] discard ", ether_sprintf(mac));
941 printf("%s frame, ", type);
949 #endif /* IEEE80211_DEBUG */