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/systm.h>
36 #include <sys/eventhandler.h>
37 #include <sys/kernel.h>
38 #include <sys/linker.h>
39 #include <sys/malloc.h>
41 #include <sys/module.h>
43 #include <sys/sysctl.h>
45 #include <sys/socket.h>
49 #include <net/if_var.h>
50 #include <net/if_dl.h>
51 #include <net/if_clone.h>
52 #include <net/if_media.h>
53 #include <net/if_types.h>
54 #include <net/ethernet.h>
55 #include <net/route.h>
58 #include <net80211/ieee80211_var.h>
59 #include <net80211/ieee80211_input.h>
61 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
63 #ifdef IEEE80211_DEBUG
64 static int ieee80211_debug = 0;
65 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
66 0, "debugging printfs");
69 static MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
71 static const char wlanname[] = "wlan";
72 static struct if_clone *wlan_cloner;
75 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
77 struct ieee80211_clone_params cp;
78 struct ieee80211vap *vap;
79 struct ieee80211com *ic;
82 error = copyin(params, &cp, sizeof(cp));
85 ic = ieee80211_find_com(cp.icp_parent);
88 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
89 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
93 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
94 ic_printf(ic, "%s mode not supported\n",
95 ieee80211_opmode_name[cp.icp_opmode]);
98 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
99 #ifdef IEEE80211_SUPPORT_TDMA
100 (ic->ic_caps & IEEE80211_C_TDMA) == 0
105 ic_printf(ic, "TDMA not supported\n");
108 vap = ic->ic_vap_create(ic, wlanname, unit,
109 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
110 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
111 cp.icp_macaddr : ic->ic_macaddr);
113 return (vap == NULL ? EIO : 0);
117 wlan_clone_destroy(struct ifnet *ifp)
119 struct ieee80211vap *vap = ifp->if_softc;
120 struct ieee80211com *ic = vap->iv_ic;
122 ic->ic_vap_delete(vap);
126 ieee80211_vap_destroy(struct ieee80211vap *vap)
128 CURVNET_SET(vap->iv_ifp->if_vnet);
129 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
134 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
136 int msecs = ticks_to_msecs(*(int *)arg1);
139 error = sysctl_handle_int(oidp, &msecs, 0, req);
140 if (error || !req->newptr)
142 t = msecs_to_ticks(msecs);
143 *(int *)arg1 = (t < 1) ? 1 : t;
148 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
150 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
153 error = sysctl_handle_int(oidp, &inact, 0, req);
154 if (error || !req->newptr)
156 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
161 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
163 struct ieee80211com *ic = arg1;
165 return SYSCTL_OUT_STR(req, ic->ic_name);
169 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
171 struct ieee80211com *ic = arg1;
174 error = sysctl_handle_int(oidp, &t, 0, req);
175 if (error || !req->newptr)
178 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
179 IEEE80211_UNLOCK(ic);
184 * For now, just restart everything.
186 * Later on, it'd be nice to have a separate VAP restart to
187 * full-device restart.
190 ieee80211_sysctl_vap_restart(SYSCTL_HANDLER_ARGS)
192 struct ieee80211vap *vap = arg1;
195 error = sysctl_handle_int(oidp, &t, 0, req);
196 if (error || !req->newptr)
199 ieee80211_restart_all(vap->iv_ic);
204 ieee80211_sysctl_attach(struct ieee80211com *ic)
209 ieee80211_sysctl_detach(struct ieee80211com *ic)
214 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
216 struct ifnet *ifp = vap->iv_ifp;
217 struct sysctl_ctx_list *ctx;
218 struct sysctl_oid *oid;
219 char num[14]; /* sufficient for 32 bits */
221 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
222 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
224 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
228 sysctl_ctx_init(ctx);
229 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
230 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
231 OID_AUTO, num, CTLFLAG_RD, NULL, "");
232 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
233 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0,
234 ieee80211_sysctl_parent, "A", "parent device");
235 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
236 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
237 "driver capabilities");
238 #ifdef IEEE80211_DEBUG
239 vap->iv_debug = ieee80211_debug;
240 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
241 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
242 "control debugging printfs");
244 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
245 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
246 "consecutive beacon misses before scanning");
247 /* XXX inherit from tunables */
248 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
249 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
250 ieee80211_sysctl_inact, "I",
251 "station inactivity timeout (sec)");
252 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
253 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
254 ieee80211_sysctl_inact, "I",
255 "station inactivity probe timeout (sec)");
256 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
257 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
258 ieee80211_sysctl_inact, "I",
259 "station authentication timeout (sec)");
260 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
261 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
262 ieee80211_sysctl_inact, "I",
263 "station initial state timeout (sec)");
264 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
265 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
266 "ampdu_mintraffic_bk", CTLFLAG_RW,
267 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
268 "BK traffic tx aggr threshold (pps)");
269 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
270 "ampdu_mintraffic_be", CTLFLAG_RW,
271 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
272 "BE traffic tx aggr threshold (pps)");
273 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
274 "ampdu_mintraffic_vo", CTLFLAG_RW,
275 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
276 "VO traffic tx aggr threshold (pps)");
277 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
278 "ampdu_mintraffic_vi", CTLFLAG_RW,
279 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
280 "VI traffic tx aggr threshold (pps)");
283 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
284 "force_restart", CTLTYPE_INT | CTLFLAG_RW, vap, 0,
285 ieee80211_sysctl_vap_restart, "I",
286 "force a VAP restart");
288 if (vap->iv_caps & IEEE80211_C_DFS) {
289 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
290 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
291 ieee80211_sysctl_radar, "I", "simulate radar event");
293 vap->iv_sysctl = ctx;
298 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
301 if (vap->iv_sysctl != NULL) {
302 sysctl_ctx_free(vap->iv_sysctl);
303 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
304 vap->iv_sysctl = NULL;
309 ieee80211_node_dectestref(struct ieee80211_node *ni)
311 /* XXX need equivalent of atomic_dec_and_test */
312 atomic_subtract_int(&ni->ni_refcnt, 1);
313 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
317 ieee80211_drain_ifq(struct ifqueue *ifq)
319 struct ieee80211_node *ni;
327 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
328 KASSERT(ni != NULL, ("frame w/o node"));
329 ieee80211_free_node(ni);
330 m->m_pkthdr.rcvif = NULL;
337 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
339 struct ieee80211_node *ni;
340 struct mbuf *m, **mprev;
343 mprev = &ifq->ifq_head;
344 while ((m = *mprev) != NULL) {
345 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
346 if (ni != NULL && ni->ni_vap == vap) {
347 *mprev = m->m_nextpkt; /* remove from list */
351 ieee80211_free_node(ni); /* reclaim ref */
353 mprev = &m->m_nextpkt;
355 /* recalculate tail ptr */
357 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
364 * As above, for mbufs allocated with m_gethdr/MGETHDR
365 * or initialized by M_COPY_PKTHDR.
367 #define MC_ALIGN(m, len) \
369 (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long)); \
370 } while (/* CONSTCOND */ 0)
373 * Allocate and setup a management frame of the specified
374 * size. We return the mbuf and a pointer to the start
375 * of the contiguous data area that's been reserved based
376 * on the packet length. The data area is forced to 32-bit
377 * alignment and the buffer length to a multiple of 4 bytes.
378 * This is done mainly so beacon frames (that require this)
379 * can use this interface too.
382 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
388 * NB: we know the mbuf routines will align the data area
389 * so we don't need to do anything special.
391 len = roundup2(headroom + pktlen, 4);
392 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
393 if (len < MINCLSIZE) {
394 m = m_gethdr(M_NOWAIT, MT_DATA);
396 * Align the data in case additional headers are added.
397 * This should only happen when a WEP header is added
398 * which only happens for shared key authentication mgt
399 * frames which all fit in MHLEN.
404 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
409 m->m_data += headroom;
415 #ifndef __NO_STRICT_ALIGNMENT
417 * Re-align the payload in the mbuf. This is mainly used (right now)
418 * to handle IP header alignment requirements on certain architectures.
421 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
426 pktlen = m->m_pkthdr.len;
427 space = pktlen + align;
428 if (space < MINCLSIZE)
429 n = m_gethdr(M_NOWAIT, MT_DATA);
431 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
432 space <= MCLBYTES ? MCLBYTES :
433 #if MJUMPAGESIZE != MCLBYTES
434 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
436 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
438 if (__predict_true(n != NULL)) {
440 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
441 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
444 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
445 mtod(m, const struct ieee80211_frame *), NULL,
446 "%s", "no mbuf to realign");
447 vap->iv_stats.is_rx_badalign++;
452 #endif /* !__NO_STRICT_ALIGNMENT */
455 ieee80211_add_callback(struct mbuf *m,
456 void (*func)(struct ieee80211_node *, void *, int), void *arg)
459 struct ieee80211_cb *cb;
461 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
462 sizeof(struct ieee80211_cb), M_NOWAIT);
466 cb = (struct ieee80211_cb *)(mtag+1);
469 m_tag_prepend(m, mtag);
470 m->m_flags |= M_TXCB;
475 ieee80211_add_xmit_params(struct mbuf *m,
476 const struct ieee80211_bpf_params *params)
479 struct ieee80211_tx_params *tx;
481 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
482 sizeof(struct ieee80211_tx_params), M_NOWAIT);
486 tx = (struct ieee80211_tx_params *)(mtag+1);
487 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
488 m_tag_prepend(m, mtag);
493 ieee80211_get_xmit_params(struct mbuf *m,
494 struct ieee80211_bpf_params *params)
497 struct ieee80211_tx_params *tx;
499 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
503 tx = (struct ieee80211_tx_params *)(mtag + 1);
504 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
509 ieee80211_process_callback(struct ieee80211_node *ni,
510 struct mbuf *m, int status)
514 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
516 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
517 cb->func(ni, cb->arg, status);
522 * Add RX parameters to the given mbuf.
524 * Returns 1 if OK, 0 on error.
527 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
530 struct ieee80211_rx_params *rx;
532 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
533 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
537 rx = (struct ieee80211_rx_params *)(mtag + 1);
538 memcpy(&rx->params, rxs, sizeof(*rxs));
539 m_tag_prepend(m, mtag);
544 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
547 struct ieee80211_rx_params *rx;
549 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
553 rx = (struct ieee80211_rx_params *)(mtag + 1);
554 memcpy(rxs, &rx->params, sizeof(*rxs));
558 const struct ieee80211_rx_stats *
559 ieee80211_get_rx_params_ptr(struct mbuf *m)
562 struct ieee80211_rx_params *rx;
564 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
568 rx = (struct ieee80211_rx_params *)(mtag + 1);
569 return (&rx->params);
574 * Add TOA parameters to the given mbuf.
577 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
580 struct ieee80211_toa_params *rp;
582 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
583 sizeof(struct ieee80211_toa_params), M_NOWAIT);
587 rp = (struct ieee80211_toa_params *)(mtag + 1);
588 memcpy(rp, p, sizeof(*rp));
589 m_tag_prepend(m, mtag);
594 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
597 struct ieee80211_toa_params *rp;
599 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
603 rp = (struct ieee80211_toa_params *)(mtag + 1);
605 memcpy(p, rp, sizeof(*p));
610 * Transmit a frame to the parent interface.
613 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
618 * Assert the IC TX lock is held - this enforces the
619 * processing -> queuing order is maintained
621 IEEE80211_TX_LOCK_ASSERT(ic);
622 error = ic->ic_transmit(ic, m);
624 struct ieee80211_node *ni;
626 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
628 /* XXX number of fragments */
629 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
630 ieee80211_free_node(ni);
631 ieee80211_free_mbuf(m);
637 * Transmit a frame to the VAP interface.
640 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
642 struct ifnet *ifp = vap->iv_ifp;
645 * When transmitting via the VAP, we shouldn't hold
646 * any IC TX lock as the VAP TX path will acquire it.
648 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
650 return (ifp->if_transmit(ifp, m));
654 #include <sys/libkern.h>
657 get_random_bytes(void *p, size_t n)
662 uint32_t v = arc4random();
663 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
664 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
665 dp += sizeof(uint32_t), n -= nb;
670 * Helper function for events that pass just a single mac address.
673 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
675 struct ieee80211_join_event iev;
677 CURVNET_SET(ifp->if_vnet);
678 memset(&iev, 0, sizeof(iev));
679 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
680 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
685 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
687 struct ieee80211vap *vap = ni->ni_vap;
688 struct ifnet *ifp = vap->iv_ifp;
690 CURVNET_SET_QUIET(ifp->if_vnet);
691 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
692 (ni == vap->iv_bss) ? "bss " : "");
694 if (ni == vap->iv_bss) {
695 notify_macaddr(ifp, newassoc ?
696 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
697 if_link_state_change(ifp, LINK_STATE_UP);
699 notify_macaddr(ifp, newassoc ?
700 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
706 ieee80211_notify_node_leave(struct ieee80211_node *ni)
708 struct ieee80211vap *vap = ni->ni_vap;
709 struct ifnet *ifp = vap->iv_ifp;
711 CURVNET_SET_QUIET(ifp->if_vnet);
712 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
713 (ni == vap->iv_bss) ? "bss " : "");
715 if (ni == vap->iv_bss) {
716 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
717 if_link_state_change(ifp, LINK_STATE_DOWN);
719 /* fire off wireless event station leaving */
720 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
726 ieee80211_notify_scan_done(struct ieee80211vap *vap)
728 struct ifnet *ifp = vap->iv_ifp;
730 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
732 /* dispatch wireless event indicating scan completed */
733 CURVNET_SET(ifp->if_vnet);
734 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
739 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
740 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
741 u_int64_t rsc, int tid)
743 struct ifnet *ifp = vap->iv_ifp;
745 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
746 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
747 k->wk_cipher->ic_name, tid, (intmax_t) rsc,
748 (intmax_t) k->wk_keyrsc[tid],
749 k->wk_keyix, k->wk_rxkeyix);
751 if (ifp != NULL) { /* NB: for cipher test modules */
752 struct ieee80211_replay_event iev;
754 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
755 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
756 iev.iev_cipher = k->wk_cipher->ic_cipher;
757 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
758 iev.iev_keyix = k->wk_rxkeyix;
760 iev.iev_keyix = k->wk_keyix;
761 iev.iev_keyrsc = k->wk_keyrsc[tid];
763 CURVNET_SET(ifp->if_vnet);
764 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
770 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
771 const struct ieee80211_frame *wh, u_int keyix)
773 struct ifnet *ifp = vap->iv_ifp;
775 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
776 "michael MIC verification failed <keyix %u>", keyix);
777 vap->iv_stats.is_rx_tkipmic++;
779 if (ifp != NULL) { /* NB: for cipher test modules */
780 struct ieee80211_michael_event iev;
782 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
783 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
784 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
785 iev.iev_keyix = keyix;
786 CURVNET_SET(ifp->if_vnet);
787 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
793 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
795 struct ieee80211vap *vap = ni->ni_vap;
796 struct ifnet *ifp = vap->iv_ifp;
798 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
802 ieee80211_notify_csa(struct ieee80211com *ic,
803 const struct ieee80211_channel *c, int mode, int count)
805 struct ieee80211_csa_event iev;
806 struct ieee80211vap *vap;
809 memset(&iev, 0, sizeof(iev));
810 iev.iev_flags = c->ic_flags;
811 iev.iev_freq = c->ic_freq;
812 iev.iev_ieee = c->ic_ieee;
814 iev.iev_count = count;
815 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
817 CURVNET_SET(ifp->if_vnet);
818 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
824 ieee80211_notify_radar(struct ieee80211com *ic,
825 const struct ieee80211_channel *c)
827 struct ieee80211_radar_event iev;
828 struct ieee80211vap *vap;
831 memset(&iev, 0, sizeof(iev));
832 iev.iev_flags = c->ic_flags;
833 iev.iev_freq = c->ic_freq;
834 iev.iev_ieee = c->ic_ieee;
835 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
837 CURVNET_SET(ifp->if_vnet);
838 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
844 ieee80211_notify_cac(struct ieee80211com *ic,
845 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
847 struct ieee80211_cac_event iev;
848 struct ieee80211vap *vap;
851 memset(&iev, 0, sizeof(iev));
852 iev.iev_flags = c->ic_flags;
853 iev.iev_freq = c->ic_freq;
854 iev.iev_ieee = c->ic_ieee;
856 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
858 CURVNET_SET(ifp->if_vnet);
859 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
865 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
867 struct ieee80211vap *vap = ni->ni_vap;
868 struct ifnet *ifp = vap->iv_ifp;
870 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
872 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
876 ieee80211_notify_node_auth(struct ieee80211_node *ni)
878 struct ieee80211vap *vap = ni->ni_vap;
879 struct ifnet *ifp = vap->iv_ifp;
881 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
883 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
887 ieee80211_notify_country(struct ieee80211vap *vap,
888 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
890 struct ifnet *ifp = vap->iv_ifp;
891 struct ieee80211_country_event iev;
893 memset(&iev, 0, sizeof(iev));
894 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
895 iev.iev_cc[0] = cc[0];
896 iev.iev_cc[1] = cc[1];
897 CURVNET_SET(ifp->if_vnet);
898 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
903 ieee80211_notify_radio(struct ieee80211com *ic, int state)
905 struct ieee80211_radio_event iev;
906 struct ieee80211vap *vap;
909 memset(&iev, 0, sizeof(iev));
910 iev.iev_state = state;
911 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
913 CURVNET_SET(ifp->if_vnet);
914 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
920 ieee80211_load_module(const char *modname)
924 (void)kern_kldload(curthread, modname, NULL);
926 printf("%s: load the %s module by hand for now.\n", __func__, modname);
930 static eventhandler_tag wlan_bpfevent;
931 static eventhandler_tag wlan_ifllevent;
934 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
936 /* NB: identify vap's by if_init */
937 if (dlt == DLT_IEEE802_11_RADIO &&
938 ifp->if_init == ieee80211_init) {
939 struct ieee80211vap *vap = ifp->if_softc;
941 * Track bpf radiotap listener state. We mark the vap
942 * to indicate if any listener is present and the com
943 * to indicate if any listener exists on any associated
944 * vap. This flag is used by drivers to prepare radiotap
945 * state only when needed.
948 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
949 if (vap->iv_opmode == IEEE80211_M_MONITOR)
950 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
951 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
952 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
953 if (vap->iv_opmode == IEEE80211_M_MONITOR)
954 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
960 * Change MAC address on the vap (if was not started).
963 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
965 /* NB: identify vap's by if_init */
966 if (ifp->if_init == ieee80211_init &&
967 (ifp->if_flags & IFF_UP) == 0) {
968 struct ieee80211vap *vap = ifp->if_softc;
970 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
977 * NB: the module name is "wlan" for compatibility with NetBSD.
980 wlan_modevent(module_t mod, int type, void *unused)
985 printf("wlan: <802.11 Link Layer>\n");
986 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
987 bpf_track, 0, EVENTHANDLER_PRI_ANY);
988 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
989 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
990 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
991 wlan_clone_destroy, 0);
994 if_clone_detach(wlan_cloner);
995 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
996 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1002 static moduledata_t wlan_mod = {
1007 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1008 MODULE_VERSION(wlan, 1);
1009 MODULE_DEPEND(wlan, ether, 1, 1, 1);
1010 #ifdef IEEE80211_ALQ
1011 MODULE_DEPEND(wlan, alq, 1, 1, 1);
1012 #endif /* IEEE80211_ALQ */