2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2003-2009 Sam Leffler, Errno Consulting
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * IEEE 802.11 support (FreeBSD-specific code)
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/eventhandler.h>
39 #include <sys/kernel.h>
40 #include <sys/linker.h>
41 #include <sys/malloc.h>
43 #include <sys/module.h>
45 #include <sys/sysctl.h>
47 #include <sys/socket.h>
51 #include <net/if_var.h>
52 #include <net/if_dl.h>
53 #include <net/if_clone.h>
54 #include <net/if_media.h>
55 #include <net/if_types.h>
56 #include <net/ethernet.h>
57 #include <net/route.h>
60 #include <net80211/ieee80211_var.h>
61 #include <net80211/ieee80211_input.h>
63 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
64 "IEEE 80211 parameters");
66 #ifdef IEEE80211_DEBUG
67 static int ieee80211_debug = 0;
68 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
69 0, "debugging printfs");
72 static const char wlanname[] = "wlan";
73 static struct if_clone *wlan_cloner;
76 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
78 struct ieee80211_clone_params cp;
79 struct ieee80211vap *vap;
80 struct ieee80211com *ic;
83 error = copyin(params, &cp, sizeof(cp));
86 ic = ieee80211_find_com(cp.icp_parent);
89 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
90 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
94 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
95 ic_printf(ic, "%s mode not supported\n",
96 ieee80211_opmode_name[cp.icp_opmode]);
99 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
100 #ifdef IEEE80211_SUPPORT_TDMA
101 (ic->ic_caps & IEEE80211_C_TDMA) == 0
106 ic_printf(ic, "TDMA not supported\n");
109 vap = ic->ic_vap_create(ic, wlanname, unit,
110 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
111 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
112 cp.icp_macaddr : ic->ic_macaddr);
114 return (vap == NULL ? EIO : 0);
118 wlan_clone_destroy(struct ifnet *ifp)
120 struct ieee80211vap *vap = ifp->if_softc;
121 struct ieee80211com *ic = vap->iv_ic;
123 ic->ic_vap_delete(vap);
127 ieee80211_vap_destroy(struct ieee80211vap *vap)
129 CURVNET_SET(vap->iv_ifp->if_vnet);
130 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
135 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
137 int msecs = ticks_to_msecs(*(int *)arg1);
140 error = sysctl_handle_int(oidp, &msecs, 0, req);
141 if (error || !req->newptr)
143 *(int *)arg1 = msecs_to_ticks(msecs);
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 | CTLFLAG_MPSAFE, NULL, "");
232 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
233 "%parent", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
234 vap->iv_ic, 0, 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 | CTLFLAG_NEEDGIANT,
250 &vap->iv_inact_run, 0, 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 | CTLFLAG_NEEDGIANT,
254 &vap->iv_inact_probe, 0, 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 | CTLFLAG_NEEDGIANT,
258 &vap->iv_inact_auth, 0, 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 | CTLFLAG_NEEDGIANT,
262 &vap->iv_inact_init, 0, 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 | CTLFLAG_NEEDGIANT,
285 vap, 0, ieee80211_sysctl_vap_restart, "I", "force a VAP restart");
287 if (vap->iv_caps & IEEE80211_C_DFS) {
288 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
289 "radar", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
290 vap->iv_ic, 0, ieee80211_sysctl_radar, "I",
291 "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;
308 #define MS(_v, _f) (((_v) & _f##_M) >> _f##_S)
310 ieee80211_com_vincref(struct ieee80211vap *vap)
314 ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
316 if (ostate & IEEE80211_COM_DETACHED) {
317 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
321 if (MS(ostate, IEEE80211_COM_REF) == IEEE80211_COM_REF_MAX) {
322 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
330 ieee80211_com_vdecref(struct ieee80211vap *vap)
334 ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);
336 KASSERT(MS(ostate, IEEE80211_COM_REF) != 0,
337 ("com reference counter underflow"));
343 ieee80211_com_vdetach(struct ieee80211vap *vap)
347 sleep_time = msecs_to_ticks(250);
348 atomic_set_32(&vap->iv_com_state, IEEE80211_COM_DETACHED);
349 while (MS(atomic_load_32(&vap->iv_com_state), IEEE80211_COM_REF) != 0)
350 pause("comref", sleep_time);
355 ieee80211_node_dectestref(struct ieee80211_node *ni)
357 /* XXX need equivalent of atomic_dec_and_test */
358 atomic_subtract_int(&ni->ni_refcnt, 1);
359 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
363 ieee80211_drain_ifq(struct ifqueue *ifq)
365 struct ieee80211_node *ni;
373 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
374 KASSERT(ni != NULL, ("frame w/o node"));
375 ieee80211_free_node(ni);
376 m->m_pkthdr.rcvif = NULL;
383 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
385 struct ieee80211_node *ni;
386 struct mbuf *m, **mprev;
389 mprev = &ifq->ifq_head;
390 while ((m = *mprev) != NULL) {
391 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
392 if (ni != NULL && ni->ni_vap == vap) {
393 *mprev = m->m_nextpkt; /* remove from list */
397 ieee80211_free_node(ni); /* reclaim ref */
399 mprev = &m->m_nextpkt;
401 /* recalculate tail ptr */
403 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
410 * As above, for mbufs allocated with m_gethdr/MGETHDR
411 * or initialized by M_COPY_PKTHDR.
413 #define MC_ALIGN(m, len) \
415 (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long)); \
416 } while (/* CONSTCOND */ 0)
419 * Allocate and setup a management frame of the specified
420 * size. We return the mbuf and a pointer to the start
421 * of the contiguous data area that's been reserved based
422 * on the packet length. The data area is forced to 32-bit
423 * alignment and the buffer length to a multiple of 4 bytes.
424 * This is done mainly so beacon frames (that require this)
425 * can use this interface too.
428 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
434 * NB: we know the mbuf routines will align the data area
435 * so we don't need to do anything special.
437 len = roundup2(headroom + pktlen, 4);
438 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
439 if (len < MINCLSIZE) {
440 m = m_gethdr(M_NOWAIT, MT_DATA);
442 * Align the data in case additional headers are added.
443 * This should only happen when a WEP header is added
444 * which only happens for shared key authentication mgt
445 * frames which all fit in MHLEN.
450 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
455 m->m_data += headroom;
461 #ifndef __NO_STRICT_ALIGNMENT
463 * Re-align the payload in the mbuf. This is mainly used (right now)
464 * to handle IP header alignment requirements on certain architectures.
467 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
472 pktlen = m->m_pkthdr.len;
473 space = pktlen + align;
474 if (space < MINCLSIZE)
475 n = m_gethdr(M_NOWAIT, MT_DATA);
477 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
478 space <= MCLBYTES ? MCLBYTES :
479 #if MJUMPAGESIZE != MCLBYTES
480 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
482 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
484 if (__predict_true(n != NULL)) {
486 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
487 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
490 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
491 mtod(m, const struct ieee80211_frame *), NULL,
492 "%s", "no mbuf to realign");
493 vap->iv_stats.is_rx_badalign++;
498 #endif /* !__NO_STRICT_ALIGNMENT */
501 ieee80211_add_callback(struct mbuf *m,
502 void (*func)(struct ieee80211_node *, void *, int), void *arg)
505 struct ieee80211_cb *cb;
507 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
508 sizeof(struct ieee80211_cb), M_NOWAIT);
512 cb = (struct ieee80211_cb *)(mtag+1);
515 m_tag_prepend(m, mtag);
516 m->m_flags |= M_TXCB;
521 ieee80211_add_xmit_params(struct mbuf *m,
522 const struct ieee80211_bpf_params *params)
525 struct ieee80211_tx_params *tx;
527 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
528 sizeof(struct ieee80211_tx_params), M_NOWAIT);
532 tx = (struct ieee80211_tx_params *)(mtag+1);
533 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
534 m_tag_prepend(m, mtag);
539 ieee80211_get_xmit_params(struct mbuf *m,
540 struct ieee80211_bpf_params *params)
543 struct ieee80211_tx_params *tx;
545 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
549 tx = (struct ieee80211_tx_params *)(mtag + 1);
550 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
555 ieee80211_process_callback(struct ieee80211_node *ni,
556 struct mbuf *m, int status)
560 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
562 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
563 cb->func(ni, cb->arg, status);
568 * Add RX parameters to the given mbuf.
570 * Returns 1 if OK, 0 on error.
573 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
576 struct ieee80211_rx_params *rx;
578 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
579 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
583 rx = (struct ieee80211_rx_params *)(mtag + 1);
584 memcpy(&rx->params, rxs, sizeof(*rxs));
585 m_tag_prepend(m, mtag);
590 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
593 struct ieee80211_rx_params *rx;
595 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
599 rx = (struct ieee80211_rx_params *)(mtag + 1);
600 memcpy(rxs, &rx->params, sizeof(*rxs));
604 const struct ieee80211_rx_stats *
605 ieee80211_get_rx_params_ptr(struct mbuf *m)
608 struct ieee80211_rx_params *rx;
610 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
614 rx = (struct ieee80211_rx_params *)(mtag + 1);
615 return (&rx->params);
620 * Add TOA parameters to the given mbuf.
623 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
626 struct ieee80211_toa_params *rp;
628 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
629 sizeof(struct ieee80211_toa_params), M_NOWAIT);
633 rp = (struct ieee80211_toa_params *)(mtag + 1);
634 memcpy(rp, p, sizeof(*rp));
635 m_tag_prepend(m, mtag);
640 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
643 struct ieee80211_toa_params *rp;
645 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
649 rp = (struct ieee80211_toa_params *)(mtag + 1);
651 memcpy(p, rp, sizeof(*p));
656 * Transmit a frame to the parent interface.
659 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
664 * Assert the IC TX lock is held - this enforces the
665 * processing -> queuing order is maintained
667 IEEE80211_TX_LOCK_ASSERT(ic);
668 error = ic->ic_transmit(ic, m);
670 struct ieee80211_node *ni;
672 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
674 /* XXX number of fragments */
675 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
676 ieee80211_free_node(ni);
677 ieee80211_free_mbuf(m);
683 * Transmit a frame to the VAP interface.
686 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
688 struct ifnet *ifp = vap->iv_ifp;
691 * When transmitting via the VAP, we shouldn't hold
692 * any IC TX lock as the VAP TX path will acquire it.
694 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
696 return (ifp->if_transmit(ifp, m));
700 #include <sys/libkern.h>
703 get_random_bytes(void *p, size_t n)
708 uint32_t v = arc4random();
709 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
710 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
711 dp += sizeof(uint32_t), n -= nb;
716 * Helper function for events that pass just a single mac address.
719 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
721 struct ieee80211_join_event iev;
723 CURVNET_SET(ifp->if_vnet);
724 memset(&iev, 0, sizeof(iev));
725 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
726 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
731 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
733 struct ieee80211vap *vap = ni->ni_vap;
734 struct ifnet *ifp = vap->iv_ifp;
736 CURVNET_SET_QUIET(ifp->if_vnet);
737 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
738 (ni == vap->iv_bss) ? "bss " : "");
740 if (ni == vap->iv_bss) {
741 notify_macaddr(ifp, newassoc ?
742 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
743 if_link_state_change(ifp, LINK_STATE_UP);
745 notify_macaddr(ifp, newassoc ?
746 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
752 ieee80211_notify_node_leave(struct ieee80211_node *ni)
754 struct ieee80211vap *vap = ni->ni_vap;
755 struct ifnet *ifp = vap->iv_ifp;
757 CURVNET_SET_QUIET(ifp->if_vnet);
758 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
759 (ni == vap->iv_bss) ? "bss " : "");
761 if (ni == vap->iv_bss) {
762 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
763 if_link_state_change(ifp, LINK_STATE_DOWN);
765 /* fire off wireless event station leaving */
766 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
772 ieee80211_notify_scan_done(struct ieee80211vap *vap)
774 struct ifnet *ifp = vap->iv_ifp;
776 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
778 /* dispatch wireless event indicating scan completed */
779 CURVNET_SET(ifp->if_vnet);
780 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
785 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
786 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
787 u_int64_t rsc, int tid)
789 struct ifnet *ifp = vap->iv_ifp;
791 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
792 "%s replay detected tid %d <rsc %ju (%jx), csc %ju (%jx), keyix %u rxkeyix %u>",
793 k->wk_cipher->ic_name, tid,
796 (intmax_t) k->wk_keyrsc[tid],
797 (intmax_t) k->wk_keyrsc[tid],
798 k->wk_keyix, k->wk_rxkeyix);
800 if (ifp != NULL) { /* NB: for cipher test modules */
801 struct ieee80211_replay_event iev;
803 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
804 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
805 iev.iev_cipher = k->wk_cipher->ic_cipher;
806 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
807 iev.iev_keyix = k->wk_rxkeyix;
809 iev.iev_keyix = k->wk_keyix;
810 iev.iev_keyrsc = k->wk_keyrsc[tid];
812 CURVNET_SET(ifp->if_vnet);
813 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
819 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
820 const struct ieee80211_frame *wh, u_int keyix)
822 struct ifnet *ifp = vap->iv_ifp;
824 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
825 "michael MIC verification failed <keyix %u>", keyix);
826 vap->iv_stats.is_rx_tkipmic++;
828 if (ifp != NULL) { /* NB: for cipher test modules */
829 struct ieee80211_michael_event iev;
831 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
832 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
833 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
834 iev.iev_keyix = keyix;
835 CURVNET_SET(ifp->if_vnet);
836 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
842 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
844 struct ieee80211vap *vap = ni->ni_vap;
845 struct ifnet *ifp = vap->iv_ifp;
847 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
851 ieee80211_notify_csa(struct ieee80211com *ic,
852 const struct ieee80211_channel *c, int mode, int count)
854 struct ieee80211_csa_event iev;
855 struct ieee80211vap *vap;
858 memset(&iev, 0, sizeof(iev));
859 iev.iev_flags = c->ic_flags;
860 iev.iev_freq = c->ic_freq;
861 iev.iev_ieee = c->ic_ieee;
863 iev.iev_count = count;
864 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
866 CURVNET_SET(ifp->if_vnet);
867 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
873 ieee80211_notify_radar(struct ieee80211com *ic,
874 const struct ieee80211_channel *c)
876 struct ieee80211_radar_event iev;
877 struct ieee80211vap *vap;
880 memset(&iev, 0, sizeof(iev));
881 iev.iev_flags = c->ic_flags;
882 iev.iev_freq = c->ic_freq;
883 iev.iev_ieee = c->ic_ieee;
884 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
886 CURVNET_SET(ifp->if_vnet);
887 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
893 ieee80211_notify_cac(struct ieee80211com *ic,
894 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
896 struct ieee80211_cac_event iev;
897 struct ieee80211vap *vap;
900 memset(&iev, 0, sizeof(iev));
901 iev.iev_flags = c->ic_flags;
902 iev.iev_freq = c->ic_freq;
903 iev.iev_ieee = c->ic_ieee;
905 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
907 CURVNET_SET(ifp->if_vnet);
908 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
914 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
916 struct ieee80211vap *vap = ni->ni_vap;
917 struct ifnet *ifp = vap->iv_ifp;
919 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
921 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
925 ieee80211_notify_node_auth(struct ieee80211_node *ni)
927 struct ieee80211vap *vap = ni->ni_vap;
928 struct ifnet *ifp = vap->iv_ifp;
930 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
932 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
936 ieee80211_notify_country(struct ieee80211vap *vap,
937 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
939 struct ifnet *ifp = vap->iv_ifp;
940 struct ieee80211_country_event iev;
942 memset(&iev, 0, sizeof(iev));
943 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
944 iev.iev_cc[0] = cc[0];
945 iev.iev_cc[1] = cc[1];
946 CURVNET_SET(ifp->if_vnet);
947 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
952 ieee80211_notify_radio(struct ieee80211com *ic, int state)
954 struct ieee80211_radio_event iev;
955 struct ieee80211vap *vap;
958 memset(&iev, 0, sizeof(iev));
959 iev.iev_state = state;
960 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
962 CURVNET_SET(ifp->if_vnet);
963 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
969 ieee80211_notify_ifnet_change(struct ieee80211vap *vap)
971 struct ifnet *ifp = vap->iv_ifp;
973 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG, "%s\n",
974 "interface state change");
976 CURVNET_SET(ifp->if_vnet);
982 ieee80211_load_module(const char *modname)
986 (void)kern_kldload(curthread, modname, NULL);
988 printf("%s: load the %s module by hand for now.\n", __func__, modname);
992 static eventhandler_tag wlan_bpfevent;
993 static eventhandler_tag wlan_ifllevent;
996 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
998 /* NB: identify vap's by if_init */
999 if (dlt == DLT_IEEE802_11_RADIO &&
1000 ifp->if_init == ieee80211_init) {
1001 struct ieee80211vap *vap = ifp->if_softc;
1003 * Track bpf radiotap listener state. We mark the vap
1004 * to indicate if any listener is present and the com
1005 * to indicate if any listener exists on any associated
1006 * vap. This flag is used by drivers to prepare radiotap
1007 * state only when needed.
1010 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
1011 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1012 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
1013 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
1014 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
1015 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1016 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
1022 * Change MAC address on the vap (if was not started).
1025 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
1027 /* NB: identify vap's by if_init */
1028 if (ifp->if_init == ieee80211_init &&
1029 (ifp->if_flags & IFF_UP) == 0) {
1030 struct ieee80211vap *vap = ifp->if_softc;
1032 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
1039 * NB: the module name is "wlan" for compatibility with NetBSD.
1042 wlan_modevent(module_t mod, int type, void *unused)
1047 printf("wlan: <802.11 Link Layer>\n");
1048 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
1049 bpf_track, 0, EVENTHANDLER_PRI_ANY);
1050 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
1051 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
1052 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
1053 wlan_clone_destroy, 0);
1056 if_clone_detach(wlan_cloner);
1057 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1058 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1064 static moduledata_t wlan_mod = {
1069 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1070 MODULE_VERSION(wlan, 1);
1071 MODULE_DEPEND(wlan, ether, 1, 1, 1);
1072 #ifdef IEEE80211_ALQ
1073 MODULE_DEPEND(wlan, alq, 1, 1, 1);
1074 #endif /* IEEE80211_ALQ */