2 * Copyright (c) 2003-2009 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.
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
30 * IEEE 802.11 support (FreeBSD-specific code)
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/systm.h>
37 #include <sys/linker.h>
39 #include <sys/module.h>
41 #include <sys/sysctl.h>
43 #include <sys/socket.h>
47 #include <net/if_dl.h>
48 #include <net/if_clone.h>
49 #include <net/if_media.h>
50 #include <net/if_types.h>
51 #include <net/ethernet.h>
52 #include <net/route.h>
55 #include <net80211/ieee80211_var.h>
56 #include <net80211/ieee80211_input.h>
58 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
60 #ifdef IEEE80211_DEBUG
61 int ieee80211_debug = 0;
62 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
63 0, "debugging printfs");
66 MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
69 * Allocate/free com structure in conjunction with ifnet;
70 * these routines are registered with if_register_com_alloc
71 * below and are called automatically by the ifnet code
72 * when the ifnet of the parent device is created.
75 wlan_alloc(u_char type, struct ifnet *ifp)
77 struct ieee80211com *ic;
79 ic = malloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO);
86 wlan_free(void *ic, u_char type)
88 free(ic, M_80211_COM);
92 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
94 struct ieee80211_clone_params cp;
95 struct ieee80211vap *vap;
96 struct ieee80211com *ic;
100 error = copyin(params, &cp, sizeof(cp));
103 ifp = ifunit(cp.icp_parent);
106 /* XXX move printfs to DIAGNOSTIC before release */
107 if (ifp->if_type != IFT_IEEE80211) {
108 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__);
111 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
112 if_printf(ifp, "%s: invalid opmode %d\n",
113 __func__, cp.icp_opmode);
117 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
118 if_printf(ifp, "%s mode not supported\n",
119 ieee80211_opmode_name[cp.icp_opmode]);
122 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
123 #ifdef IEEE80211_SUPPORT_TDMA
124 (ic->ic_caps & IEEE80211_C_TDMA) == 0
129 if_printf(ifp, "TDMA not supported\n");
132 vap = ic->ic_vap_create(ic, ifc->ifc_name, unit,
133 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
134 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
135 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp));
136 return (vap == NULL ? EIO : 0);
140 wlan_clone_destroy(struct ifnet *ifp)
142 struct ieee80211vap *vap = ifp->if_softc;
143 struct ieee80211com *ic = vap->iv_ic;
145 ic->ic_vap_delete(vap);
147 IFC_SIMPLE_DECLARE(wlan, 0);
150 ieee80211_vap_destroy(struct ieee80211vap *vap)
152 if_clone_destroyif(&wlan_cloner, vap->iv_ifp);
156 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
158 int msecs = ticks_to_msecs(*(int *)arg1);
161 error = sysctl_handle_int(oidp, &msecs, 0, req);
162 if (error || !req->newptr)
164 t = msecs_to_ticks(msecs);
165 *(int *)arg1 = (t < 1) ? 1 : t;
170 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
172 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
175 error = sysctl_handle_int(oidp, &inact, 0, req);
176 if (error || !req->newptr)
178 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
183 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
185 struct ieee80211com *ic = arg1;
186 const char *name = ic->ic_ifp->if_xname;
188 return SYSCTL_OUT(req, name, strlen(name));
192 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
194 struct ieee80211com *ic = arg1;
197 error = sysctl_handle_int(oidp, &t, 0, req);
198 if (error || !req->newptr)
201 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
202 IEEE80211_UNLOCK(ic);
207 ieee80211_sysctl_attach(struct ieee80211com *ic)
212 ieee80211_sysctl_detach(struct ieee80211com *ic)
217 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
219 struct ifnet *ifp = vap->iv_ifp;
220 struct sysctl_ctx_list *ctx;
221 struct sysctl_oid *oid;
222 char num[14]; /* sufficient for 32 bits */
224 ctx = (struct sysctl_ctx_list *) malloc(sizeof(struct sysctl_ctx_list),
225 M_DEVBUF, M_NOWAIT | M_ZERO);
227 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
231 sysctl_ctx_init(ctx);
232 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
233 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
234 OID_AUTO, num, CTLFLAG_RD, NULL, "");
235 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
236 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0,
237 ieee80211_sysctl_parent, "A", "parent device");
238 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
239 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
240 "driver capabilities");
241 #ifdef IEEE80211_DEBUG
242 vap->iv_debug = ieee80211_debug;
243 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
244 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
245 "control debugging printfs");
247 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
248 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
249 "consecutive beacon misses before scanning");
250 /* XXX inherit from tunables */
251 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
252 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
253 ieee80211_sysctl_inact, "I",
254 "station inactivity timeout (sec)");
255 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
256 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
257 ieee80211_sysctl_inact, "I",
258 "station inactivity probe timeout (sec)");
259 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
260 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
261 ieee80211_sysctl_inact, "I",
262 "station authentication timeout (sec)");
263 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
264 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
265 ieee80211_sysctl_inact, "I",
266 "station initial state timeout (sec)");
267 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
268 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
269 "ampdu_mintraffic_bk", CTLFLAG_RW,
270 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
271 "BK traffic tx aggr threshold (pps)");
272 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
273 "ampdu_mintraffic_be", CTLFLAG_RW,
274 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
275 "BE traffic tx aggr threshold (pps)");
276 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
277 "ampdu_mintraffic_vo", CTLFLAG_RW,
278 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
279 "VO traffic tx aggr threshold (pps)");
280 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
281 "ampdu_mintraffic_vi", CTLFLAG_RW,
282 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
283 "VI traffic tx aggr threshold (pps)");
285 if (vap->iv_caps & IEEE80211_C_DFS) {
286 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
287 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
288 ieee80211_sysctl_radar, "I", "simulate radar event");
290 vap->iv_sysctl = ctx;
295 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
298 if (vap->iv_sysctl != NULL) {
299 sysctl_ctx_free(vap->iv_sysctl);
300 free(vap->iv_sysctl, M_DEVBUF);
301 vap->iv_sysctl = NULL;
306 ieee80211_node_dectestref(struct ieee80211_node *ni)
308 /* XXX need equivalent of atomic_dec_and_test */
309 atomic_subtract_int(&ni->ni_refcnt, 1);
310 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
314 ieee80211_drain_ifq(struct ifqueue *ifq)
316 struct ieee80211_node *ni;
324 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
325 KASSERT(ni != NULL, ("frame w/o node"));
326 ieee80211_free_node(ni);
327 m->m_pkthdr.rcvif = NULL;
334 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
336 struct ieee80211_node *ni;
337 struct mbuf *m, **mprev;
340 mprev = &ifq->ifq_head;
341 while ((m = *mprev) != NULL) {
342 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
343 if (ni != NULL && ni->ni_vap == vap) {
344 *mprev = m->m_nextpkt; /* remove from list */
348 ieee80211_free_node(ni); /* reclaim ref */
350 mprev = &m->m_nextpkt;
352 /* recalculate tail ptr */
354 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
361 * As above, for mbufs allocated with m_gethdr/MGETHDR
362 * or initialized by M_COPY_PKTHDR.
364 #define MC_ALIGN(m, len) \
366 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \
367 } while (/* CONSTCOND */ 0)
370 * Allocate and setup a management frame of the specified
371 * size. We return the mbuf and a pointer to the start
372 * of the contiguous data area that's been reserved based
373 * on the packet length. The data area is forced to 32-bit
374 * alignment and the buffer length to a multiple of 4 bytes.
375 * This is done mainly so beacon frames (that require this)
376 * can use this interface too.
379 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
385 * NB: we know the mbuf routines will align the data area
386 * so we don't need to do anything special.
388 len = roundup2(headroom + pktlen, 4);
389 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
390 if (len < MINCLSIZE) {
391 m = m_gethdr(M_NOWAIT, MT_DATA);
393 * Align the data in case additional headers are added.
394 * This should only happen when a WEP header is added
395 * which only happens for shared key authentication mgt
396 * frames which all fit in MHLEN.
401 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
406 m->m_data += headroom;
413 * Re-align the payload in the mbuf. This is mainly used (right now)
414 * to handle IP header alignment requirements on certain architectures.
417 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
422 pktlen = m->m_pkthdr.len;
423 space = pktlen + align;
424 if (space < MINCLSIZE)
425 n = m_gethdr(M_DONTWAIT, MT_DATA);
427 n = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR,
428 space <= MCLBYTES ? MCLBYTES :
429 #if MJUMPAGESIZE != MCLBYTES
430 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
432 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
434 if (__predict_true(n != NULL)) {
436 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
437 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
440 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
441 mtod(m, const struct ieee80211_frame *), NULL,
442 "%s", "no mbuf to realign");
443 vap->iv_stats.is_rx_badalign++;
450 ieee80211_add_callback(struct mbuf *m,
451 void (*func)(struct ieee80211_node *, void *, int), void *arg)
454 struct ieee80211_cb *cb;
456 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
457 sizeof(struct ieee80211_cb), M_NOWAIT);
461 cb = (struct ieee80211_cb *)(mtag+1);
464 m_tag_prepend(m, mtag);
465 m->m_flags |= M_TXCB;
470 ieee80211_process_callback(struct ieee80211_node *ni,
471 struct mbuf *m, int status)
475 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
477 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
478 cb->func(ni, cb->arg, status);
482 #include <sys/libkern.h>
485 get_random_bytes(void *p, size_t n)
490 uint32_t v = arc4random();
491 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
492 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
493 dp += sizeof(uint32_t), n -= nb;
498 * Helper function for events that pass just a single mac address.
501 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
503 struct ieee80211_join_event iev;
505 CURVNET_SET(ifp->if_vnet);
506 memset(&iev, 0, sizeof(iev));
507 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
508 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
513 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
515 struct ieee80211vap *vap = ni->ni_vap;
516 struct ifnet *ifp = vap->iv_ifp;
518 CURVNET_SET_QUIET(ifp->if_vnet);
519 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
520 (ni == vap->iv_bss) ? "bss " : "");
522 if (ni == vap->iv_bss) {
523 notify_macaddr(ifp, newassoc ?
524 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
525 if_link_state_change(ifp, LINK_STATE_UP);
527 notify_macaddr(ifp, newassoc ?
528 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
534 ieee80211_notify_node_leave(struct ieee80211_node *ni)
536 struct ieee80211vap *vap = ni->ni_vap;
537 struct ifnet *ifp = vap->iv_ifp;
539 CURVNET_SET_QUIET(ifp->if_vnet);
540 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
541 (ni == vap->iv_bss) ? "bss " : "");
543 if (ni == vap->iv_bss) {
544 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
545 if_link_state_change(ifp, LINK_STATE_DOWN);
547 /* fire off wireless event station leaving */
548 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
554 ieee80211_notify_scan_done(struct ieee80211vap *vap)
556 struct ifnet *ifp = vap->iv_ifp;
558 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
560 /* dispatch wireless event indicating scan completed */
561 CURVNET_SET(ifp->if_vnet);
562 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
567 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
568 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
569 u_int64_t rsc, int tid)
571 struct ifnet *ifp = vap->iv_ifp;
573 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
574 "%s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
575 k->wk_cipher->ic_name, (intmax_t) rsc,
576 (intmax_t) k->wk_keyrsc[tid],
577 k->wk_keyix, k->wk_rxkeyix);
579 if (ifp != NULL) { /* NB: for cipher test modules */
580 struct ieee80211_replay_event iev;
582 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
583 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
584 iev.iev_cipher = k->wk_cipher->ic_cipher;
585 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
586 iev.iev_keyix = k->wk_rxkeyix;
588 iev.iev_keyix = k->wk_keyix;
589 iev.iev_keyrsc = k->wk_keyrsc[tid];
591 CURVNET_SET(ifp->if_vnet);
592 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
598 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
599 const struct ieee80211_frame *wh, u_int keyix)
601 struct ifnet *ifp = vap->iv_ifp;
603 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
604 "michael MIC verification failed <keyix %u>", keyix);
605 vap->iv_stats.is_rx_tkipmic++;
607 if (ifp != NULL) { /* NB: for cipher test modules */
608 struct ieee80211_michael_event iev;
610 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
611 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
612 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
613 iev.iev_keyix = keyix;
614 CURVNET_SET(ifp->if_vnet);
615 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
621 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
623 struct ieee80211vap *vap = ni->ni_vap;
624 struct ifnet *ifp = vap->iv_ifp;
626 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
630 ieee80211_notify_csa(struct ieee80211com *ic,
631 const struct ieee80211_channel *c, int mode, int count)
633 struct ifnet *ifp = ic->ic_ifp;
634 struct ieee80211_csa_event iev;
636 memset(&iev, 0, sizeof(iev));
637 iev.iev_flags = c->ic_flags;
638 iev.iev_freq = c->ic_freq;
639 iev.iev_ieee = c->ic_ieee;
641 iev.iev_count = count;
642 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
646 ieee80211_notify_radar(struct ieee80211com *ic,
647 const struct ieee80211_channel *c)
649 struct ifnet *ifp = ic->ic_ifp;
650 struct ieee80211_radar_event iev;
652 memset(&iev, 0, sizeof(iev));
653 iev.iev_flags = c->ic_flags;
654 iev.iev_freq = c->ic_freq;
655 iev.iev_ieee = c->ic_ieee;
656 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
660 ieee80211_notify_cac(struct ieee80211com *ic,
661 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
663 struct ifnet *ifp = ic->ic_ifp;
664 struct ieee80211_cac_event iev;
666 memset(&iev, 0, sizeof(iev));
667 iev.iev_flags = c->ic_flags;
668 iev.iev_freq = c->ic_freq;
669 iev.iev_ieee = c->ic_ieee;
671 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
675 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
677 struct ieee80211vap *vap = ni->ni_vap;
678 struct ifnet *ifp = vap->iv_ifp;
680 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
682 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
686 ieee80211_notify_node_auth(struct ieee80211_node *ni)
688 struct ieee80211vap *vap = ni->ni_vap;
689 struct ifnet *ifp = vap->iv_ifp;
691 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
693 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
697 ieee80211_notify_country(struct ieee80211vap *vap,
698 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
700 struct ifnet *ifp = vap->iv_ifp;
701 struct ieee80211_country_event iev;
703 memset(&iev, 0, sizeof(iev));
704 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
705 iev.iev_cc[0] = cc[0];
706 iev.iev_cc[1] = cc[1];
707 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
711 ieee80211_notify_radio(struct ieee80211com *ic, int state)
713 struct ifnet *ifp = ic->ic_ifp;
714 struct ieee80211_radio_event iev;
716 memset(&iev, 0, sizeof(iev));
717 iev.iev_state = state;
718 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
722 ieee80211_load_module(const char *modname)
726 (void)kern_kldload(curthread, modname, NULL);
728 printf("%s: load the %s module by hand for now.\n", __func__, modname);
732 static eventhandler_tag wlan_bpfevent;
733 static eventhandler_tag wlan_ifllevent;
736 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
738 /* NB: identify vap's by if_start */
739 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) {
740 struct ieee80211vap *vap = ifp->if_softc;
742 * Track bpf radiotap listener state. We mark the vap
743 * to indicate if any listener is present and the com
744 * to indicate if any listener exists on any associated
745 * vap. This flag is used by drivers to prepare radiotap
746 * state only when needed.
749 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
750 if (vap->iv_opmode == IEEE80211_M_MONITOR)
751 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
752 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
753 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
754 if (vap->iv_opmode == IEEE80211_M_MONITOR)
755 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
761 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
763 struct ieee80211com *ic = ifp->if_l2com;
764 struct ieee80211vap *vap, *next;
766 if (ifp->if_type != IFT_IEEE80211 || ic == NULL)
770 TAILQ_FOREACH_SAFE(vap, &ic->ic_vaps, iv_next, next) {
772 * If the MAC address has changed on the parent and it was
773 * copied to the vap on creation then re-sync.
775 if (vap->iv_ic == ic &&
776 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) {
777 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
778 IEEE80211_UNLOCK(ic);
779 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp),
784 IEEE80211_UNLOCK(ic);
790 * NB: the module name is "wlan" for compatibility with NetBSD.
793 wlan_modevent(module_t mod, int type, void *unused)
798 printf("wlan: <802.11 Link Layer>\n");
799 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
800 bpf_track, 0, EVENTHANDLER_PRI_ANY);
801 if (wlan_bpfevent == NULL)
803 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
804 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
805 if (wlan_ifllevent == NULL) {
806 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
809 if_clone_attach(&wlan_cloner);
810 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free);
813 if_deregister_com_alloc(IFT_IEEE80211);
814 if_clone_detach(&wlan_cloner);
815 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
816 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
822 static moduledata_t wlan_mod = {
827 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
828 MODULE_VERSION(wlan, 1);
829 MODULE_DEPEND(wlan, ether, 1, 1, 1);