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 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
75 struct ieee80211_clone_params cp;
76 struct ieee80211vap *vap;
77 struct ieee80211com *ic;
80 error = copyin(params, &cp, sizeof(cp));
83 ic = ieee80211_find_com(cp.icp_parent);
86 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
87 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
91 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
92 ic_printf(ic, "%s mode not supported\n",
93 ieee80211_opmode_name[cp.icp_opmode]);
96 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
97 #ifdef IEEE80211_SUPPORT_TDMA
98 (ic->ic_caps & IEEE80211_C_TDMA) == 0
103 ic_printf(ic, "TDMA not supported\n");
106 vap = ic->ic_vap_create(ic, wlanname, unit,
107 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
108 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
109 cp.icp_macaddr : ic->ic_macaddr);
111 return (vap == NULL ? EIO : 0);
115 wlan_clone_destroy(struct ifnet *ifp)
117 struct ieee80211vap *vap = ifp->if_softc;
118 struct ieee80211com *ic = vap->iv_ic;
120 ic->ic_vap_delete(vap);
124 ieee80211_vap_destroy(struct ieee80211vap *vap)
126 CURVNET_SET(vap->iv_ifp->if_vnet);
127 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
132 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
134 int msecs = ticks_to_msecs(*(int *)arg1);
137 error = sysctl_handle_int(oidp, &msecs, 0, req);
138 if (error || !req->newptr)
140 t = msecs_to_ticks(msecs);
141 *(int *)arg1 = (t < 1) ? 1 : t;
146 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
148 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
151 error = sysctl_handle_int(oidp, &inact, 0, req);
152 if (error || !req->newptr)
154 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
159 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
161 struct ieee80211com *ic = arg1;
163 return SYSCTL_OUT_STR(req, ic->ic_name);
167 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
169 struct ieee80211com *ic = arg1;
172 error = sysctl_handle_int(oidp, &t, 0, req);
173 if (error || !req->newptr)
176 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
177 IEEE80211_UNLOCK(ic);
182 ieee80211_sysctl_attach(struct ieee80211com *ic)
187 ieee80211_sysctl_detach(struct ieee80211com *ic)
192 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
194 struct ifnet *ifp = vap->iv_ifp;
195 struct sysctl_ctx_list *ctx;
196 struct sysctl_oid *oid;
197 char num[14]; /* sufficient for 32 bits */
199 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
200 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
202 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
206 sysctl_ctx_init(ctx);
207 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
208 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
209 OID_AUTO, num, CTLFLAG_RD, NULL, "");
210 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
211 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0,
212 ieee80211_sysctl_parent, "A", "parent device");
213 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
214 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
215 "driver capabilities");
216 #ifdef IEEE80211_DEBUG
217 vap->iv_debug = ieee80211_debug;
218 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
219 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
220 "control debugging printfs");
222 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
223 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
224 "consecutive beacon misses before scanning");
225 /* XXX inherit from tunables */
226 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
227 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
228 ieee80211_sysctl_inact, "I",
229 "station inactivity timeout (sec)");
230 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
231 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
232 ieee80211_sysctl_inact, "I",
233 "station inactivity probe timeout (sec)");
234 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
235 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
236 ieee80211_sysctl_inact, "I",
237 "station authentication timeout (sec)");
238 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
239 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
240 ieee80211_sysctl_inact, "I",
241 "station initial state timeout (sec)");
242 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
243 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
244 "ampdu_mintraffic_bk", CTLFLAG_RW,
245 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
246 "BK traffic tx aggr threshold (pps)");
247 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
248 "ampdu_mintraffic_be", CTLFLAG_RW,
249 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
250 "BE traffic tx aggr threshold (pps)");
251 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
252 "ampdu_mintraffic_vo", CTLFLAG_RW,
253 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
254 "VO traffic tx aggr threshold (pps)");
255 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
256 "ampdu_mintraffic_vi", CTLFLAG_RW,
257 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
258 "VI traffic tx aggr threshold (pps)");
260 if (vap->iv_caps & IEEE80211_C_DFS) {
261 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
262 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
263 ieee80211_sysctl_radar, "I", "simulate radar event");
265 vap->iv_sysctl = ctx;
270 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
273 if (vap->iv_sysctl != NULL) {
274 sysctl_ctx_free(vap->iv_sysctl);
275 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
276 vap->iv_sysctl = NULL;
281 ieee80211_node_dectestref(struct ieee80211_node *ni)
283 /* XXX need equivalent of atomic_dec_and_test */
284 atomic_subtract_int(&ni->ni_refcnt, 1);
285 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
289 ieee80211_drain_ifq(struct ifqueue *ifq)
291 struct ieee80211_node *ni;
299 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
300 KASSERT(ni != NULL, ("frame w/o node"));
301 ieee80211_free_node(ni);
302 m->m_pkthdr.rcvif = NULL;
309 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
311 struct ieee80211_node *ni;
312 struct mbuf *m, **mprev;
315 mprev = &ifq->ifq_head;
316 while ((m = *mprev) != NULL) {
317 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
318 if (ni != NULL && ni->ni_vap == vap) {
319 *mprev = m->m_nextpkt; /* remove from list */
323 ieee80211_free_node(ni); /* reclaim ref */
325 mprev = &m->m_nextpkt;
327 /* recalculate tail ptr */
329 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
336 * As above, for mbufs allocated with m_gethdr/MGETHDR
337 * or initialized by M_COPY_PKTHDR.
339 #define MC_ALIGN(m, len) \
341 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \
342 } while (/* CONSTCOND */ 0)
345 * Allocate and setup a management frame of the specified
346 * size. We return the mbuf and a pointer to the start
347 * of the contiguous data area that's been reserved based
348 * on the packet length. The data area is forced to 32-bit
349 * alignment and the buffer length to a multiple of 4 bytes.
350 * This is done mainly so beacon frames (that require this)
351 * can use this interface too.
354 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
360 * NB: we know the mbuf routines will align the data area
361 * so we don't need to do anything special.
363 len = roundup2(headroom + pktlen, 4);
364 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
365 if (len < MINCLSIZE) {
366 m = m_gethdr(M_NOWAIT, MT_DATA);
368 * Align the data in case additional headers are added.
369 * This should only happen when a WEP header is added
370 * which only happens for shared key authentication mgt
371 * frames which all fit in MHLEN.
376 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
381 m->m_data += headroom;
387 #ifndef __NO_STRICT_ALIGNMENT
389 * Re-align the payload in the mbuf. This is mainly used (right now)
390 * to handle IP header alignment requirements on certain architectures.
393 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
398 pktlen = m->m_pkthdr.len;
399 space = pktlen + align;
400 if (space < MINCLSIZE)
401 n = m_gethdr(M_NOWAIT, MT_DATA);
403 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
404 space <= MCLBYTES ? MCLBYTES :
405 #if MJUMPAGESIZE != MCLBYTES
406 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
408 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
410 if (__predict_true(n != NULL)) {
412 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
413 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
416 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
417 mtod(m, const struct ieee80211_frame *), NULL,
418 "%s", "no mbuf to realign");
419 vap->iv_stats.is_rx_badalign++;
424 #endif /* !__NO_STRICT_ALIGNMENT */
427 ieee80211_add_callback(struct mbuf *m,
428 void (*func)(struct ieee80211_node *, void *, int), void *arg)
431 struct ieee80211_cb *cb;
433 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
434 sizeof(struct ieee80211_cb), M_NOWAIT);
438 cb = (struct ieee80211_cb *)(mtag+1);
441 m_tag_prepend(m, mtag);
442 m->m_flags |= M_TXCB;
447 ieee80211_add_xmit_params(struct mbuf *m,
448 const struct ieee80211_bpf_params *params)
451 struct ieee80211_tx_params *tx;
453 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
454 sizeof(struct ieee80211_tx_params), M_NOWAIT);
458 tx = (struct ieee80211_tx_params *)(mtag+1);
459 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
460 m_tag_prepend(m, mtag);
465 ieee80211_get_xmit_params(struct mbuf *m,
466 struct ieee80211_bpf_params *params)
469 struct ieee80211_tx_params *tx;
471 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
475 tx = (struct ieee80211_tx_params *)(mtag + 1);
476 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
481 ieee80211_process_callback(struct ieee80211_node *ni,
482 struct mbuf *m, int status)
486 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
488 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
489 cb->func(ni, cb->arg, status);
494 * Add RX parameters to the given mbuf.
496 * Returns 1 if OK, 0 on error.
499 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
502 struct ieee80211_rx_params *rx;
504 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
505 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
509 rx = (struct ieee80211_rx_params *)(mtag + 1);
510 memcpy(&rx->params, rxs, sizeof(*rxs));
511 m_tag_prepend(m, mtag);
516 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
519 struct ieee80211_rx_params *rx;
521 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
525 rx = (struct ieee80211_rx_params *)(mtag + 1);
526 memcpy(rxs, &rx->params, sizeof(*rxs));
531 * Transmit a frame to the parent interface.
534 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
539 * Assert the IC TX lock is held - this enforces the
540 * processing -> queuing order is maintained
542 IEEE80211_TX_LOCK_ASSERT(ic);
543 error = ic->ic_transmit(ic, m);
545 struct ieee80211_node *ni;
547 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
549 /* XXX number of fragments */
550 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
551 ieee80211_free_node(ni);
552 ieee80211_free_mbuf(m);
558 * Transmit a frame to the VAP interface.
561 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
563 struct ifnet *ifp = vap->iv_ifp;
566 * When transmitting via the VAP, we shouldn't hold
567 * any IC TX lock as the VAP TX path will acquire it.
569 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
571 return (ifp->if_transmit(ifp, m));
575 #include <sys/libkern.h>
578 get_random_bytes(void *p, size_t n)
583 uint32_t v = arc4random();
584 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
585 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
586 dp += sizeof(uint32_t), n -= nb;
591 * Helper function for events that pass just a single mac address.
594 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
596 struct ieee80211_join_event iev;
598 CURVNET_SET(ifp->if_vnet);
599 memset(&iev, 0, sizeof(iev));
600 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
601 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
606 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
608 struct ieee80211vap *vap = ni->ni_vap;
609 struct ifnet *ifp = vap->iv_ifp;
611 CURVNET_SET_QUIET(ifp->if_vnet);
612 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
613 (ni == vap->iv_bss) ? "bss " : "");
615 if (ni == vap->iv_bss) {
616 notify_macaddr(ifp, newassoc ?
617 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
618 if_link_state_change(ifp, LINK_STATE_UP);
620 notify_macaddr(ifp, newassoc ?
621 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
627 ieee80211_notify_node_leave(struct ieee80211_node *ni)
629 struct ieee80211vap *vap = ni->ni_vap;
630 struct ifnet *ifp = vap->iv_ifp;
632 CURVNET_SET_QUIET(ifp->if_vnet);
633 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
634 (ni == vap->iv_bss) ? "bss " : "");
636 if (ni == vap->iv_bss) {
637 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
638 if_link_state_change(ifp, LINK_STATE_DOWN);
640 /* fire off wireless event station leaving */
641 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
647 ieee80211_notify_scan_done(struct ieee80211vap *vap)
649 struct ifnet *ifp = vap->iv_ifp;
651 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
653 /* dispatch wireless event indicating scan completed */
654 CURVNET_SET(ifp->if_vnet);
655 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
660 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
661 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
662 u_int64_t rsc, int tid)
664 struct ifnet *ifp = vap->iv_ifp;
666 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
667 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
668 k->wk_cipher->ic_name, tid, (intmax_t) rsc,
669 (intmax_t) k->wk_keyrsc[tid],
670 k->wk_keyix, k->wk_rxkeyix);
672 if (ifp != NULL) { /* NB: for cipher test modules */
673 struct ieee80211_replay_event iev;
675 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
676 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
677 iev.iev_cipher = k->wk_cipher->ic_cipher;
678 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
679 iev.iev_keyix = k->wk_rxkeyix;
681 iev.iev_keyix = k->wk_keyix;
682 iev.iev_keyrsc = k->wk_keyrsc[tid];
684 CURVNET_SET(ifp->if_vnet);
685 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
691 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
692 const struct ieee80211_frame *wh, u_int keyix)
694 struct ifnet *ifp = vap->iv_ifp;
696 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
697 "michael MIC verification failed <keyix %u>", keyix);
698 vap->iv_stats.is_rx_tkipmic++;
700 if (ifp != NULL) { /* NB: for cipher test modules */
701 struct ieee80211_michael_event iev;
703 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
704 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
705 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
706 iev.iev_keyix = keyix;
707 CURVNET_SET(ifp->if_vnet);
708 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
714 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
716 struct ieee80211vap *vap = ni->ni_vap;
717 struct ifnet *ifp = vap->iv_ifp;
719 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
723 ieee80211_notify_csa(struct ieee80211com *ic,
724 const struct ieee80211_channel *c, int mode, int count)
726 struct ieee80211_csa_event iev;
727 struct ieee80211vap *vap;
730 memset(&iev, 0, sizeof(iev));
731 iev.iev_flags = c->ic_flags;
732 iev.iev_freq = c->ic_freq;
733 iev.iev_ieee = c->ic_ieee;
735 iev.iev_count = count;
736 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
738 CURVNET_SET(ifp->if_vnet);
739 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
745 ieee80211_notify_radar(struct ieee80211com *ic,
746 const struct ieee80211_channel *c)
748 struct ieee80211_radar_event iev;
749 struct ieee80211vap *vap;
752 memset(&iev, 0, sizeof(iev));
753 iev.iev_flags = c->ic_flags;
754 iev.iev_freq = c->ic_freq;
755 iev.iev_ieee = c->ic_ieee;
756 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
758 CURVNET_SET(ifp->if_vnet);
759 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
765 ieee80211_notify_cac(struct ieee80211com *ic,
766 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
768 struct ieee80211_cac_event iev;
769 struct ieee80211vap *vap;
772 memset(&iev, 0, sizeof(iev));
773 iev.iev_flags = c->ic_flags;
774 iev.iev_freq = c->ic_freq;
775 iev.iev_ieee = c->ic_ieee;
777 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
779 CURVNET_SET(ifp->if_vnet);
780 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
786 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
788 struct ieee80211vap *vap = ni->ni_vap;
789 struct ifnet *ifp = vap->iv_ifp;
791 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
793 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
797 ieee80211_notify_node_auth(struct ieee80211_node *ni)
799 struct ieee80211vap *vap = ni->ni_vap;
800 struct ifnet *ifp = vap->iv_ifp;
802 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
804 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
808 ieee80211_notify_country(struct ieee80211vap *vap,
809 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
811 struct ifnet *ifp = vap->iv_ifp;
812 struct ieee80211_country_event iev;
814 memset(&iev, 0, sizeof(iev));
815 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
816 iev.iev_cc[0] = cc[0];
817 iev.iev_cc[1] = cc[1];
818 CURVNET_SET(ifp->if_vnet);
819 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
824 ieee80211_notify_radio(struct ieee80211com *ic, int state)
826 struct ieee80211_radio_event iev;
827 struct ieee80211vap *vap;
830 memset(&iev, 0, sizeof(iev));
831 iev.iev_state = state;
832 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
834 CURVNET_SET(ifp->if_vnet);
835 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
841 ieee80211_load_module(const char *modname)
845 (void)kern_kldload(curthread, modname, NULL);
847 printf("%s: load the %s module by hand for now.\n", __func__, modname);
851 static eventhandler_tag wlan_bpfevent;
854 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
856 /* NB: identify vap's by if_init */
857 if (dlt == DLT_IEEE802_11_RADIO &&
858 ifp->if_init == ieee80211_init) {
859 struct ieee80211vap *vap = ifp->if_softc;
861 * Track bpf radiotap listener state. We mark the vap
862 * to indicate if any listener is present and the com
863 * to indicate if any listener exists on any associated
864 * vap. This flag is used by drivers to prepare radiotap
865 * state only when needed.
868 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
869 if (vap->iv_opmode == IEEE80211_M_MONITOR)
870 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
871 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
872 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
873 if (vap->iv_opmode == IEEE80211_M_MONITOR)
874 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
882 * NB: the module name is "wlan" for compatibility with NetBSD.
885 wlan_modevent(module_t mod, int type, void *unused)
890 printf("wlan: <802.11 Link Layer>\n");
891 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
892 bpf_track, 0, EVENTHANDLER_PRI_ANY);
893 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
894 wlan_clone_destroy, 0);
897 if_clone_detach(wlan_cloner);
898 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
904 static moduledata_t wlan_mod = {
909 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
910 MODULE_VERSION(wlan, 1);
911 MODULE_DEPEND(wlan, ether, 1, 1, 1);
913 MODULE_DEPEND(wlan, alq, 1, 1, 1);
914 #endif /* IEEE80211_ALQ */