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_var.h>
48 #include <net/if_dl.h>
49 #include <net/if_clone.h>
50 #include <net/if_media.h>
51 #include <net/if_types.h>
52 #include <net/ethernet.h>
53 #include <net/route.h>
56 #include <net80211/ieee80211_var.h>
57 #include <net80211/ieee80211_input.h>
59 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
61 #ifdef IEEE80211_DEBUG
62 int ieee80211_debug = 0;
63 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
64 0, "debugging printfs");
67 static MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
69 static const char wlanname[] = "wlan";
70 static struct if_clone *wlan_cloner;
73 * Allocate/free com structure in conjunction with ifnet;
74 * these routines are registered with if_register_com_alloc
75 * below and are called automatically by the ifnet code
76 * when the ifnet of the parent device is created.
79 wlan_alloc(u_char type, struct ifnet *ifp)
81 struct ieee80211com *ic;
83 ic = IEEE80211_MALLOC(sizeof(struct ieee80211com), M_80211_COM,
84 IEEE80211_M_WAITOK | IEEE80211_M_ZERO);
91 wlan_free(void *ic, u_char type)
93 IEEE80211_FREE(ic, M_80211_COM);
97 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
99 struct ieee80211_clone_params cp;
100 struct ieee80211vap *vap;
101 struct ieee80211com *ic;
105 error = copyin(params, &cp, sizeof(cp));
108 ifp = ifunit(cp.icp_parent);
111 /* XXX move printfs to DIAGNOSTIC before release */
112 if (ifp->if_type != IFT_IEEE80211) {
113 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__);
116 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
117 if_printf(ifp, "%s: invalid opmode %d\n",
118 __func__, cp.icp_opmode);
122 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
123 if_printf(ifp, "%s mode not supported\n",
124 ieee80211_opmode_name[cp.icp_opmode]);
127 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
128 #ifdef IEEE80211_SUPPORT_TDMA
129 (ic->ic_caps & IEEE80211_C_TDMA) == 0
134 if_printf(ifp, "TDMA not supported\n");
137 vap = ic->ic_vap_create(ic, wlanname, unit,
138 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
139 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
140 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp));
142 return (vap == NULL ? EIO : 0);
146 wlan_clone_destroy(struct ifnet *ifp)
148 struct ieee80211vap *vap = ifp->if_softc;
149 struct ieee80211com *ic = vap->iv_ic;
151 ic->ic_vap_delete(vap);
155 ieee80211_vap_destroy(struct ieee80211vap *vap)
157 CURVNET_SET(vap->iv_ifp->if_vnet);
158 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
163 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
165 int msecs = ticks_to_msecs(*(int *)arg1);
168 error = sysctl_handle_int(oidp, &msecs, 0, req);
169 if (error || !req->newptr)
171 t = msecs_to_ticks(msecs);
172 *(int *)arg1 = (t < 1) ? 1 : t;
177 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
179 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
182 error = sysctl_handle_int(oidp, &inact, 0, req);
183 if (error || !req->newptr)
185 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
190 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
192 struct ieee80211com *ic = arg1;
194 return SYSCTL_OUT_STR(req, ic->ic_name);
198 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
200 struct ieee80211com *ic = arg1;
203 error = sysctl_handle_int(oidp, &t, 0, req);
204 if (error || !req->newptr)
207 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
208 IEEE80211_UNLOCK(ic);
213 ieee80211_sysctl_attach(struct ieee80211com *ic)
218 ieee80211_sysctl_detach(struct ieee80211com *ic)
223 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
225 struct ifnet *ifp = vap->iv_ifp;
226 struct sysctl_ctx_list *ctx;
227 struct sysctl_oid *oid;
228 char num[14]; /* sufficient for 32 bits */
230 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
231 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
233 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
237 sysctl_ctx_init(ctx);
238 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
239 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
240 OID_AUTO, num, CTLFLAG_RD, NULL, "");
241 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
242 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0,
243 ieee80211_sysctl_parent, "A", "parent device");
244 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
245 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
246 "driver capabilities");
247 #ifdef IEEE80211_DEBUG
248 vap->iv_debug = ieee80211_debug;
249 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
250 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
251 "control debugging printfs");
253 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
254 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
255 "consecutive beacon misses before scanning");
256 /* XXX inherit from tunables */
257 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
258 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
259 ieee80211_sysctl_inact, "I",
260 "station inactivity timeout (sec)");
261 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
262 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
263 ieee80211_sysctl_inact, "I",
264 "station inactivity probe timeout (sec)");
265 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
266 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
267 ieee80211_sysctl_inact, "I",
268 "station authentication timeout (sec)");
269 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
270 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
271 ieee80211_sysctl_inact, "I",
272 "station initial state timeout (sec)");
273 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
274 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
275 "ampdu_mintraffic_bk", CTLFLAG_RW,
276 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
277 "BK traffic tx aggr threshold (pps)");
278 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
279 "ampdu_mintraffic_be", CTLFLAG_RW,
280 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
281 "BE traffic tx aggr threshold (pps)");
282 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
283 "ampdu_mintraffic_vo", CTLFLAG_RW,
284 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
285 "VO traffic tx aggr threshold (pps)");
286 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
287 "ampdu_mintraffic_vi", CTLFLAG_RW,
288 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
289 "VI traffic tx aggr threshold (pps)");
291 if (vap->iv_caps & IEEE80211_C_DFS) {
292 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
293 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
294 ieee80211_sysctl_radar, "I", "simulate radar event");
296 vap->iv_sysctl = ctx;
301 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
304 if (vap->iv_sysctl != NULL) {
305 sysctl_ctx_free(vap->iv_sysctl);
306 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
307 vap->iv_sysctl = NULL;
312 ieee80211_node_dectestref(struct ieee80211_node *ni)
314 /* XXX need equivalent of atomic_dec_and_test */
315 atomic_subtract_int(&ni->ni_refcnt, 1);
316 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
320 ieee80211_drain_ifq(struct ifqueue *ifq)
322 struct ieee80211_node *ni;
330 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
331 KASSERT(ni != NULL, ("frame w/o node"));
332 ieee80211_free_node(ni);
333 m->m_pkthdr.rcvif = NULL;
340 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
342 struct ieee80211_node *ni;
343 struct mbuf *m, **mprev;
346 mprev = &ifq->ifq_head;
347 while ((m = *mprev) != NULL) {
348 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
349 if (ni != NULL && ni->ni_vap == vap) {
350 *mprev = m->m_nextpkt; /* remove from list */
354 ieee80211_free_node(ni); /* reclaim ref */
356 mprev = &m->m_nextpkt;
358 /* recalculate tail ptr */
360 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
367 * As above, for mbufs allocated with m_gethdr/MGETHDR
368 * or initialized by M_COPY_PKTHDR.
370 #define MC_ALIGN(m, len) \
372 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \
373 } while (/* CONSTCOND */ 0)
376 * Allocate and setup a management frame of the specified
377 * size. We return the mbuf and a pointer to the start
378 * of the contiguous data area that's been reserved based
379 * on the packet length. The data area is forced to 32-bit
380 * alignment and the buffer length to a multiple of 4 bytes.
381 * This is done mainly so beacon frames (that require this)
382 * can use this interface too.
385 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
391 * NB: we know the mbuf routines will align the data area
392 * so we don't need to do anything special.
394 len = roundup2(headroom + pktlen, 4);
395 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
396 if (len < MINCLSIZE) {
397 m = m_gethdr(M_NOWAIT, MT_DATA);
399 * Align the data in case additional headers are added.
400 * This should only happen when a WEP header is added
401 * which only happens for shared key authentication mgt
402 * frames which all fit in MHLEN.
407 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
412 m->m_data += headroom;
418 #ifndef __NO_STRICT_ALIGNMENT
420 * Re-align the payload in the mbuf. This is mainly used (right now)
421 * to handle IP header alignment requirements on certain architectures.
424 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
429 pktlen = m->m_pkthdr.len;
430 space = pktlen + align;
431 if (space < MINCLSIZE)
432 n = m_gethdr(M_NOWAIT, MT_DATA);
434 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
435 space <= MCLBYTES ? MCLBYTES :
436 #if MJUMPAGESIZE != MCLBYTES
437 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
439 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
441 if (__predict_true(n != NULL)) {
443 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
444 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
447 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
448 mtod(m, const struct ieee80211_frame *), NULL,
449 "%s", "no mbuf to realign");
450 vap->iv_stats.is_rx_badalign++;
455 #endif /* !__NO_STRICT_ALIGNMENT */
458 ieee80211_add_callback(struct mbuf *m,
459 void (*func)(struct ieee80211_node *, void *, int), void *arg)
462 struct ieee80211_cb *cb;
464 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
465 sizeof(struct ieee80211_cb), M_NOWAIT);
469 cb = (struct ieee80211_cb *)(mtag+1);
472 m_tag_prepend(m, mtag);
473 m->m_flags |= M_TXCB;
478 ieee80211_add_xmit_params(struct mbuf *m,
479 const struct ieee80211_bpf_params *params)
482 struct ieee80211_tx_params *tx;
484 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
485 sizeof(struct ieee80211_tx_params), M_NOWAIT);
489 tx = (struct ieee80211_tx_params *)(mtag+1);
490 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
491 m_tag_prepend(m, mtag);
496 ieee80211_get_xmit_params(struct mbuf *m,
497 struct ieee80211_bpf_params *params)
500 struct ieee80211_tx_params *tx;
502 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
506 tx = (struct ieee80211_tx_params *)(mtag + 1);
507 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
512 ieee80211_process_callback(struct ieee80211_node *ni,
513 struct mbuf *m, int status)
517 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
519 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
520 cb->func(ni, cb->arg, status);
525 * Transmit a frame to the parent interface.
527 * TODO: if the transmission fails, make sure the parent node is freed
528 * (the callers will first need modifying.)
531 ieee80211_parent_xmitpkt(struct ieee80211com *ic,
534 struct ifnet *parent = ic->ic_ifp;
536 * Assert the IC TX lock is held - this enforces the
537 * processing -> queuing order is maintained
539 IEEE80211_TX_LOCK_ASSERT(ic);
541 return (parent->if_transmit(parent, m));
545 * Transmit a frame to the VAP interface.
548 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
550 struct ifnet *ifp = vap->iv_ifp;
553 * When transmitting via the VAP, we shouldn't hold
554 * any IC TX lock as the VAP TX path will acquire it.
556 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
558 return (ifp->if_transmit(ifp, m));
562 #include <sys/libkern.h>
565 get_random_bytes(void *p, size_t n)
570 uint32_t v = arc4random();
571 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
572 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
573 dp += sizeof(uint32_t), n -= nb;
578 * Helper function for events that pass just a single mac address.
581 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
583 struct ieee80211_join_event iev;
585 CURVNET_SET(ifp->if_vnet);
586 memset(&iev, 0, sizeof(iev));
587 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
588 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
593 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
595 struct ieee80211vap *vap = ni->ni_vap;
596 struct ifnet *ifp = vap->iv_ifp;
598 CURVNET_SET_QUIET(ifp->if_vnet);
599 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
600 (ni == vap->iv_bss) ? "bss " : "");
602 if (ni == vap->iv_bss) {
603 notify_macaddr(ifp, newassoc ?
604 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
605 if_link_state_change(ifp, LINK_STATE_UP);
607 notify_macaddr(ifp, newassoc ?
608 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
614 ieee80211_notify_node_leave(struct ieee80211_node *ni)
616 struct ieee80211vap *vap = ni->ni_vap;
617 struct ifnet *ifp = vap->iv_ifp;
619 CURVNET_SET_QUIET(ifp->if_vnet);
620 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
621 (ni == vap->iv_bss) ? "bss " : "");
623 if (ni == vap->iv_bss) {
624 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
625 if_link_state_change(ifp, LINK_STATE_DOWN);
627 /* fire off wireless event station leaving */
628 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
634 ieee80211_notify_scan_done(struct ieee80211vap *vap)
636 struct ifnet *ifp = vap->iv_ifp;
638 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
640 /* dispatch wireless event indicating scan completed */
641 CURVNET_SET(ifp->if_vnet);
642 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
647 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
648 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
649 u_int64_t rsc, int tid)
651 struct ifnet *ifp = vap->iv_ifp;
653 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
654 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
655 k->wk_cipher->ic_name, tid, (intmax_t) rsc,
656 (intmax_t) k->wk_keyrsc[tid],
657 k->wk_keyix, k->wk_rxkeyix);
659 if (ifp != NULL) { /* NB: for cipher test modules */
660 struct ieee80211_replay_event iev;
662 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
663 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
664 iev.iev_cipher = k->wk_cipher->ic_cipher;
665 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
666 iev.iev_keyix = k->wk_rxkeyix;
668 iev.iev_keyix = k->wk_keyix;
669 iev.iev_keyrsc = k->wk_keyrsc[tid];
671 CURVNET_SET(ifp->if_vnet);
672 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
678 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
679 const struct ieee80211_frame *wh, u_int keyix)
681 struct ifnet *ifp = vap->iv_ifp;
683 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
684 "michael MIC verification failed <keyix %u>", keyix);
685 vap->iv_stats.is_rx_tkipmic++;
687 if (ifp != NULL) { /* NB: for cipher test modules */
688 struct ieee80211_michael_event iev;
690 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
691 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
692 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
693 iev.iev_keyix = keyix;
694 CURVNET_SET(ifp->if_vnet);
695 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
701 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
703 struct ieee80211vap *vap = ni->ni_vap;
704 struct ifnet *ifp = vap->iv_ifp;
706 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
710 ieee80211_notify_csa(struct ieee80211com *ic,
711 const struct ieee80211_channel *c, int mode, int count)
713 struct ieee80211_csa_event iev;
714 struct ieee80211vap *vap;
717 memset(&iev, 0, sizeof(iev));
718 iev.iev_flags = c->ic_flags;
719 iev.iev_freq = c->ic_freq;
720 iev.iev_ieee = c->ic_ieee;
722 iev.iev_count = count;
723 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
725 CURVNET_SET(ifp->if_vnet);
726 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
732 ieee80211_notify_radar(struct ieee80211com *ic,
733 const struct ieee80211_channel *c)
735 struct ieee80211_radar_event iev;
736 struct ieee80211vap *vap;
739 memset(&iev, 0, sizeof(iev));
740 iev.iev_flags = c->ic_flags;
741 iev.iev_freq = c->ic_freq;
742 iev.iev_ieee = c->ic_ieee;
743 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
745 CURVNET_SET(ifp->if_vnet);
746 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
752 ieee80211_notify_cac(struct ieee80211com *ic,
753 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
755 struct ieee80211_cac_event iev;
756 struct ieee80211vap *vap;
759 memset(&iev, 0, sizeof(iev));
760 iev.iev_flags = c->ic_flags;
761 iev.iev_freq = c->ic_freq;
762 iev.iev_ieee = c->ic_ieee;
764 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
766 CURVNET_SET(ifp->if_vnet);
767 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
773 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
775 struct ieee80211vap *vap = ni->ni_vap;
776 struct ifnet *ifp = vap->iv_ifp;
778 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
780 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
784 ieee80211_notify_node_auth(struct ieee80211_node *ni)
786 struct ieee80211vap *vap = ni->ni_vap;
787 struct ifnet *ifp = vap->iv_ifp;
789 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
791 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
795 ieee80211_notify_country(struct ieee80211vap *vap,
796 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
798 struct ifnet *ifp = vap->iv_ifp;
799 struct ieee80211_country_event iev;
801 memset(&iev, 0, sizeof(iev));
802 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
803 iev.iev_cc[0] = cc[0];
804 iev.iev_cc[1] = cc[1];
805 CURVNET_SET(ifp->if_vnet);
806 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
811 ieee80211_notify_radio(struct ieee80211com *ic, int state)
813 struct ieee80211_radio_event iev;
814 struct ieee80211vap *vap;
817 memset(&iev, 0, sizeof(iev));
818 iev.iev_state = state;
819 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
821 CURVNET_SET(ifp->if_vnet);
822 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
828 ieee80211_load_module(const char *modname)
832 (void)kern_kldload(curthread, modname, NULL);
834 printf("%s: load the %s module by hand for now.\n", __func__, modname);
838 static eventhandler_tag wlan_bpfevent;
839 static eventhandler_tag wlan_ifllevent;
842 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
844 /* NB: identify vap's by if_init */
845 if (dlt == DLT_IEEE802_11_RADIO &&
846 ifp->if_init == ieee80211_init) {
847 struct ieee80211vap *vap = ifp->if_softc;
849 * Track bpf radiotap listener state. We mark the vap
850 * to indicate if any listener is present and the com
851 * to indicate if any listener exists on any associated
852 * vap. This flag is used by drivers to prepare radiotap
853 * state only when needed.
856 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
857 if (vap->iv_opmode == IEEE80211_M_MONITOR)
858 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
859 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
860 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
861 if (vap->iv_opmode == IEEE80211_M_MONITOR)
862 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
868 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
870 struct ieee80211com *ic = ifp->if_l2com;
871 struct ieee80211vap *vap, *next;
873 if (ifp->if_type != IFT_IEEE80211 || ic == NULL)
877 TAILQ_FOREACH_SAFE(vap, &ic->ic_vaps, iv_next, next) {
879 * If the MAC address has changed on the parent and it was
880 * copied to the vap on creation then re-sync.
882 if (vap->iv_ic == ic &&
883 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) {
884 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
885 IEEE80211_UNLOCK(ic);
886 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp),
891 IEEE80211_UNLOCK(ic);
897 * NB: the module name is "wlan" for compatibility with NetBSD.
900 wlan_modevent(module_t mod, int type, void *unused)
905 printf("wlan: <802.11 Link Layer>\n");
906 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
907 bpf_track, 0, EVENTHANDLER_PRI_ANY);
908 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
909 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
910 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
911 wlan_clone_destroy, 0);
912 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free);
915 if_deregister_com_alloc(IFT_IEEE80211);
916 if_clone_detach(wlan_cloner);
917 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
918 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
924 static moduledata_t wlan_mod = {
929 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
930 MODULE_VERSION(wlan, 1);
931 MODULE_DEPEND(wlan, ether, 1, 1, 1);
933 MODULE_DEPEND(wlan, alq, 1, 1, 1);
934 #endif /* IEEE80211_ALQ */