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>
46 #include <sys/sysctl.h>
48 #include <sys/socket.h>
51 #include <net/debugnet.h>
53 #include <net/if_var.h>
54 #include <net/if_dl.h>
55 #include <net/if_clone.h>
56 #include <net/if_media.h>
57 #include <net/if_types.h>
58 #include <net/ethernet.h>
59 #include <net/route.h>
62 #include <net80211/ieee80211_var.h>
63 #include <net80211/ieee80211_input.h>
65 DEBUGNET_DEFINE(ieee80211);
66 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
67 "IEEE 80211 parameters");
69 #ifdef IEEE80211_DEBUG
70 static int ieee80211_debug = 0;
71 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
72 0, "debugging printfs");
75 static const char wlanname[] = "wlan";
76 static struct if_clone *wlan_cloner;
79 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
81 struct ieee80211_clone_params cp;
82 struct ieee80211vap *vap;
83 struct ieee80211com *ic;
86 error = priv_check(curthread, PRIV_NET80211_CREATE_VAP);
90 error = copyin(params, &cp, sizeof(cp));
93 ic = ieee80211_find_com(cp.icp_parent);
96 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
97 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
101 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
102 ic_printf(ic, "%s mode not supported\n",
103 ieee80211_opmode_name[cp.icp_opmode]);
106 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
107 #ifdef IEEE80211_SUPPORT_TDMA
108 (ic->ic_caps & IEEE80211_C_TDMA) == 0
113 ic_printf(ic, "TDMA not supported\n");
116 vap = ic->ic_vap_create(ic, wlanname, unit,
117 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
118 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
119 cp.icp_macaddr : ic->ic_macaddr);
125 if (ic->ic_debugnet_meth != NULL)
126 DEBUGNET_SET(vap->iv_ifp, ieee80211);
132 wlan_clone_destroy(struct ifnet *ifp)
134 struct ieee80211vap *vap = ifp->if_softc;
135 struct ieee80211com *ic = vap->iv_ic;
137 ic->ic_vap_delete(vap);
141 ieee80211_vap_destroy(struct ieee80211vap *vap)
143 CURVNET_SET(vap->iv_ifp->if_vnet);
144 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
149 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
151 int msecs = ticks_to_msecs(*(int *)arg1);
154 error = sysctl_handle_int(oidp, &msecs, 0, req);
155 if (error || !req->newptr)
157 *(int *)arg1 = msecs_to_ticks(msecs);
162 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
164 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
167 error = sysctl_handle_int(oidp, &inact, 0, req);
168 if (error || !req->newptr)
170 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
175 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
177 struct ieee80211com *ic = arg1;
179 return SYSCTL_OUT_STR(req, ic->ic_name);
183 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
185 struct ieee80211com *ic = arg1;
188 error = sysctl_handle_int(oidp, &t, 0, req);
189 if (error || !req->newptr)
192 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
193 IEEE80211_UNLOCK(ic);
198 * For now, just restart everything.
200 * Later on, it'd be nice to have a separate VAP restart to
201 * full-device restart.
204 ieee80211_sysctl_vap_restart(SYSCTL_HANDLER_ARGS)
206 struct ieee80211vap *vap = arg1;
209 error = sysctl_handle_int(oidp, &t, 0, req);
210 if (error || !req->newptr)
213 ieee80211_restart_all(vap->iv_ic);
218 ieee80211_sysctl_attach(struct ieee80211com *ic)
223 ieee80211_sysctl_detach(struct ieee80211com *ic)
228 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
230 struct ifnet *ifp = vap->iv_ifp;
231 struct sysctl_ctx_list *ctx;
232 struct sysctl_oid *oid;
233 char num[14]; /* sufficient for 32 bits */
235 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
236 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
238 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
242 sysctl_ctx_init(ctx);
243 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
244 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
245 OID_AUTO, num, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
246 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
247 "%parent", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
248 vap->iv_ic, 0, ieee80211_sysctl_parent, "A", "parent device");
249 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
250 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
251 "driver capabilities");
252 #ifdef IEEE80211_DEBUG
253 vap->iv_debug = ieee80211_debug;
254 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
255 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
256 "control debugging printfs");
258 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
259 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
260 "consecutive beacon misses before scanning");
261 /* XXX inherit from tunables */
262 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
263 "inact_run", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
264 &vap->iv_inact_run, 0, ieee80211_sysctl_inact, "I",
265 "station inactivity timeout (sec)");
266 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
267 "inact_probe", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
268 &vap->iv_inact_probe, 0, ieee80211_sysctl_inact, "I",
269 "station inactivity probe timeout (sec)");
270 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
271 "inact_auth", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
272 &vap->iv_inact_auth, 0, ieee80211_sysctl_inact, "I",
273 "station authentication timeout (sec)");
274 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
275 "inact_init", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
276 &vap->iv_inact_init, 0, ieee80211_sysctl_inact, "I",
277 "station initial state timeout (sec)");
278 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
279 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
280 "ampdu_mintraffic_bk", CTLFLAG_RW,
281 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
282 "BK traffic tx aggr threshold (pps)");
283 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
284 "ampdu_mintraffic_be", CTLFLAG_RW,
285 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
286 "BE traffic tx aggr threshold (pps)");
287 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
288 "ampdu_mintraffic_vo", CTLFLAG_RW,
289 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
290 "VO traffic tx aggr threshold (pps)");
291 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
292 "ampdu_mintraffic_vi", CTLFLAG_RW,
293 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
294 "VI traffic tx aggr threshold (pps)");
297 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
298 "force_restart", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
299 vap, 0, ieee80211_sysctl_vap_restart, "I", "force a VAP restart");
301 if (vap->iv_caps & IEEE80211_C_DFS) {
302 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
303 "radar", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
304 vap->iv_ic, 0, ieee80211_sysctl_radar, "I",
305 "simulate radar event");
307 vap->iv_sysctl = ctx;
312 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
315 if (vap->iv_sysctl != NULL) {
316 sysctl_ctx_free(vap->iv_sysctl);
317 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
318 vap->iv_sysctl = NULL;
322 #define MS(_v, _f) (((_v) & _f##_M) >> _f##_S)
324 ieee80211_com_vincref(struct ieee80211vap *vap)
328 ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
330 if (ostate & IEEE80211_COM_DETACHED) {
331 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
335 if (MS(ostate, IEEE80211_COM_REF) == IEEE80211_COM_REF_MAX) {
336 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
344 ieee80211_com_vdecref(struct ieee80211vap *vap)
348 ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);
350 KASSERT(MS(ostate, IEEE80211_COM_REF) != 0,
351 ("com reference counter underflow"));
357 ieee80211_com_vdetach(struct ieee80211vap *vap)
361 sleep_time = msecs_to_ticks(250);
362 atomic_set_32(&vap->iv_com_state, IEEE80211_COM_DETACHED);
363 while (MS(atomic_load_32(&vap->iv_com_state), IEEE80211_COM_REF) != 0)
364 pause("comref", sleep_time);
369 ieee80211_node_dectestref(struct ieee80211_node *ni)
371 /* XXX need equivalent of atomic_dec_and_test */
372 atomic_subtract_int(&ni->ni_refcnt, 1);
373 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
377 ieee80211_drain_ifq(struct ifqueue *ifq)
379 struct ieee80211_node *ni;
387 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
388 KASSERT(ni != NULL, ("frame w/o node"));
389 ieee80211_free_node(ni);
390 m->m_pkthdr.rcvif = NULL;
397 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
399 struct ieee80211_node *ni;
400 struct mbuf *m, **mprev;
403 mprev = &ifq->ifq_head;
404 while ((m = *mprev) != NULL) {
405 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
406 if (ni != NULL && ni->ni_vap == vap) {
407 *mprev = m->m_nextpkt; /* remove from list */
411 ieee80211_free_node(ni); /* reclaim ref */
413 mprev = &m->m_nextpkt;
415 /* recalculate tail ptr */
417 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
424 * As above, for mbufs allocated with m_gethdr/MGETHDR
425 * or initialized by M_COPY_PKTHDR.
427 #define MC_ALIGN(m, len) \
429 (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long)); \
430 } while (/* CONSTCOND */ 0)
433 * Allocate and setup a management frame of the specified
434 * size. We return the mbuf and a pointer to the start
435 * of the contiguous data area that's been reserved based
436 * on the packet length. The data area is forced to 32-bit
437 * alignment and the buffer length to a multiple of 4 bytes.
438 * This is done mainly so beacon frames (that require this)
439 * can use this interface too.
442 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
448 * NB: we know the mbuf routines will align the data area
449 * so we don't need to do anything special.
451 len = roundup2(headroom + pktlen, 4);
452 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
453 if (len < MINCLSIZE) {
454 m = m_gethdr(M_NOWAIT, MT_DATA);
456 * Align the data in case additional headers are added.
457 * This should only happen when a WEP header is added
458 * which only happens for shared key authentication mgt
459 * frames which all fit in MHLEN.
464 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
469 m->m_data += headroom;
475 #ifndef __NO_STRICT_ALIGNMENT
477 * Re-align the payload in the mbuf. This is mainly used (right now)
478 * to handle IP header alignment requirements on certain architectures.
481 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
486 pktlen = m->m_pkthdr.len;
487 space = pktlen + align;
488 if (space < MINCLSIZE)
489 n = m_gethdr(M_NOWAIT, MT_DATA);
491 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
492 space <= MCLBYTES ? MCLBYTES :
493 #if MJUMPAGESIZE != MCLBYTES
494 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
496 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
498 if (__predict_true(n != NULL)) {
500 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
501 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
504 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
505 mtod(m, const struct ieee80211_frame *), NULL,
506 "%s", "no mbuf to realign");
507 vap->iv_stats.is_rx_badalign++;
512 #endif /* !__NO_STRICT_ALIGNMENT */
515 ieee80211_add_callback(struct mbuf *m,
516 void (*func)(struct ieee80211_node *, void *, int), void *arg)
519 struct ieee80211_cb *cb;
521 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
522 sizeof(struct ieee80211_cb), M_NOWAIT);
526 cb = (struct ieee80211_cb *)(mtag+1);
529 m_tag_prepend(m, mtag);
530 m->m_flags |= M_TXCB;
535 ieee80211_add_xmit_params(struct mbuf *m,
536 const struct ieee80211_bpf_params *params)
539 struct ieee80211_tx_params *tx;
541 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
542 sizeof(struct ieee80211_tx_params), M_NOWAIT);
546 tx = (struct ieee80211_tx_params *)(mtag+1);
547 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
548 m_tag_prepend(m, mtag);
553 ieee80211_get_xmit_params(struct mbuf *m,
554 struct ieee80211_bpf_params *params)
557 struct ieee80211_tx_params *tx;
559 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
563 tx = (struct ieee80211_tx_params *)(mtag + 1);
564 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
569 ieee80211_process_callback(struct ieee80211_node *ni,
570 struct mbuf *m, int status)
574 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
576 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
577 cb->func(ni, cb->arg, status);
582 * Add RX parameters to the given mbuf.
584 * Returns 1 if OK, 0 on error.
587 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
590 struct ieee80211_rx_params *rx;
592 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
593 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
597 rx = (struct ieee80211_rx_params *)(mtag + 1);
598 memcpy(&rx->params, rxs, sizeof(*rxs));
599 m_tag_prepend(m, mtag);
604 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
607 struct ieee80211_rx_params *rx;
609 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
613 rx = (struct ieee80211_rx_params *)(mtag + 1);
614 memcpy(rxs, &rx->params, sizeof(*rxs));
618 const struct ieee80211_rx_stats *
619 ieee80211_get_rx_params_ptr(struct mbuf *m)
622 struct ieee80211_rx_params *rx;
624 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
628 rx = (struct ieee80211_rx_params *)(mtag + 1);
629 return (&rx->params);
634 * Add TOA parameters to the given mbuf.
637 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
640 struct ieee80211_toa_params *rp;
642 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
643 sizeof(struct ieee80211_toa_params), M_NOWAIT);
647 rp = (struct ieee80211_toa_params *)(mtag + 1);
648 memcpy(rp, p, sizeof(*rp));
649 m_tag_prepend(m, mtag);
654 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
657 struct ieee80211_toa_params *rp;
659 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
663 rp = (struct ieee80211_toa_params *)(mtag + 1);
665 memcpy(p, rp, sizeof(*p));
670 * Transmit a frame to the parent interface.
673 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
678 * Assert the IC TX lock is held - this enforces the
679 * processing -> queuing order is maintained
681 IEEE80211_TX_LOCK_ASSERT(ic);
682 error = ic->ic_transmit(ic, m);
684 struct ieee80211_node *ni;
686 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
688 /* XXX number of fragments */
689 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
690 ieee80211_free_node(ni);
691 ieee80211_free_mbuf(m);
697 * Transmit a frame to the VAP interface.
700 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
702 struct ifnet *ifp = vap->iv_ifp;
705 * When transmitting via the VAP, we shouldn't hold
706 * any IC TX lock as the VAP TX path will acquire it.
708 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
710 return (ifp->if_transmit(ifp, m));
714 #include <sys/libkern.h>
717 get_random_bytes(void *p, size_t n)
722 uint32_t v = arc4random();
723 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
724 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
725 dp += sizeof(uint32_t), n -= nb;
730 * Helper function for events that pass just a single mac address.
733 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
735 struct ieee80211_join_event iev;
737 CURVNET_SET(ifp->if_vnet);
738 memset(&iev, 0, sizeof(iev));
739 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
740 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
745 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
747 struct ieee80211vap *vap = ni->ni_vap;
748 struct ifnet *ifp = vap->iv_ifp;
750 CURVNET_SET_QUIET(ifp->if_vnet);
751 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
752 (ni == vap->iv_bss) ? "bss " : "");
754 if (ni == vap->iv_bss) {
755 notify_macaddr(ifp, newassoc ?
756 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
757 if_link_state_change(ifp, LINK_STATE_UP);
759 notify_macaddr(ifp, newassoc ?
760 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
766 ieee80211_notify_node_leave(struct ieee80211_node *ni)
768 struct ieee80211vap *vap = ni->ni_vap;
769 struct ifnet *ifp = vap->iv_ifp;
771 CURVNET_SET_QUIET(ifp->if_vnet);
772 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
773 (ni == vap->iv_bss) ? "bss " : "");
775 if (ni == vap->iv_bss) {
776 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
777 if_link_state_change(ifp, LINK_STATE_DOWN);
779 /* fire off wireless event station leaving */
780 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
786 ieee80211_notify_scan_done(struct ieee80211vap *vap)
788 struct ifnet *ifp = vap->iv_ifp;
790 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
792 /* dispatch wireless event indicating scan completed */
793 CURVNET_SET(ifp->if_vnet);
794 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
799 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
800 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
801 u_int64_t rsc, int tid)
803 struct ifnet *ifp = vap->iv_ifp;
805 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
806 "%s replay detected tid %d <rsc %ju (%jx), csc %ju (%jx), keyix %u rxkeyix %u>",
807 k->wk_cipher->ic_name, tid,
810 (intmax_t) k->wk_keyrsc[tid],
811 (intmax_t) k->wk_keyrsc[tid],
812 k->wk_keyix, k->wk_rxkeyix);
814 if (ifp != NULL) { /* NB: for cipher test modules */
815 struct ieee80211_replay_event iev;
817 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
818 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
819 iev.iev_cipher = k->wk_cipher->ic_cipher;
820 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
821 iev.iev_keyix = k->wk_rxkeyix;
823 iev.iev_keyix = k->wk_keyix;
824 iev.iev_keyrsc = k->wk_keyrsc[tid];
826 CURVNET_SET(ifp->if_vnet);
827 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
833 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
834 const struct ieee80211_frame *wh, u_int keyix)
836 struct ifnet *ifp = vap->iv_ifp;
838 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
839 "michael MIC verification failed <keyix %u>", keyix);
840 vap->iv_stats.is_rx_tkipmic++;
842 if (ifp != NULL) { /* NB: for cipher test modules */
843 struct ieee80211_michael_event iev;
845 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
846 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
847 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
848 iev.iev_keyix = keyix;
849 CURVNET_SET(ifp->if_vnet);
850 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
856 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
858 struct ieee80211vap *vap = ni->ni_vap;
859 struct ifnet *ifp = vap->iv_ifp;
861 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
865 ieee80211_notify_csa(struct ieee80211com *ic,
866 const struct ieee80211_channel *c, int mode, int count)
868 struct ieee80211_csa_event iev;
869 struct ieee80211vap *vap;
872 memset(&iev, 0, sizeof(iev));
873 iev.iev_flags = c->ic_flags;
874 iev.iev_freq = c->ic_freq;
875 iev.iev_ieee = c->ic_ieee;
877 iev.iev_count = count;
878 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
880 CURVNET_SET(ifp->if_vnet);
881 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
887 ieee80211_notify_radar(struct ieee80211com *ic,
888 const struct ieee80211_channel *c)
890 struct ieee80211_radar_event iev;
891 struct ieee80211vap *vap;
894 memset(&iev, 0, sizeof(iev));
895 iev.iev_flags = c->ic_flags;
896 iev.iev_freq = c->ic_freq;
897 iev.iev_ieee = c->ic_ieee;
898 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
900 CURVNET_SET(ifp->if_vnet);
901 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
907 ieee80211_notify_cac(struct ieee80211com *ic,
908 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
910 struct ieee80211_cac_event iev;
911 struct ieee80211vap *vap;
914 memset(&iev, 0, sizeof(iev));
915 iev.iev_flags = c->ic_flags;
916 iev.iev_freq = c->ic_freq;
917 iev.iev_ieee = c->ic_ieee;
919 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
921 CURVNET_SET(ifp->if_vnet);
922 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
928 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
930 struct ieee80211vap *vap = ni->ni_vap;
931 struct ifnet *ifp = vap->iv_ifp;
933 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
935 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
939 ieee80211_notify_node_auth(struct ieee80211_node *ni)
941 struct ieee80211vap *vap = ni->ni_vap;
942 struct ifnet *ifp = vap->iv_ifp;
944 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
946 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
950 ieee80211_notify_country(struct ieee80211vap *vap,
951 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
953 struct ifnet *ifp = vap->iv_ifp;
954 struct ieee80211_country_event iev;
956 memset(&iev, 0, sizeof(iev));
957 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
958 iev.iev_cc[0] = cc[0];
959 iev.iev_cc[1] = cc[1];
960 CURVNET_SET(ifp->if_vnet);
961 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
966 ieee80211_notify_radio(struct ieee80211com *ic, int state)
968 struct ieee80211_radio_event iev;
969 struct ieee80211vap *vap;
972 memset(&iev, 0, sizeof(iev));
973 iev.iev_state = state;
974 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
976 CURVNET_SET(ifp->if_vnet);
977 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
983 ieee80211_notify_ifnet_change(struct ieee80211vap *vap)
985 struct ifnet *ifp = vap->iv_ifp;
987 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG, "%s\n",
988 "interface state change");
990 CURVNET_SET(ifp->if_vnet);
996 ieee80211_load_module(const char *modname)
1000 (void)kern_kldload(curthread, modname, NULL);
1002 printf("%s: load the %s module by hand for now.\n", __func__, modname);
1006 static eventhandler_tag wlan_bpfevent;
1007 static eventhandler_tag wlan_ifllevent;
1010 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
1012 /* NB: identify vap's by if_init */
1013 if (dlt == DLT_IEEE802_11_RADIO &&
1014 ifp->if_init == ieee80211_init) {
1015 struct ieee80211vap *vap = ifp->if_softc;
1017 * Track bpf radiotap listener state. We mark the vap
1018 * to indicate if any listener is present and the com
1019 * to indicate if any listener exists on any associated
1020 * vap. This flag is used by drivers to prepare radiotap
1021 * state only when needed.
1024 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
1025 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1026 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
1027 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
1028 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
1029 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1030 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
1036 * Change MAC address on the vap (if was not started).
1039 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
1041 /* NB: identify vap's by if_init */
1042 if (ifp->if_init == ieee80211_init &&
1043 (ifp->if_flags & IFF_UP) == 0) {
1044 struct ieee80211vap *vap = ifp->if_softc;
1046 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
1051 * Fetch the VAP name.
1053 * This returns a const char pointer suitable for debugging,
1054 * but don't expect it to stick around for much longer.
1057 ieee80211_get_vap_ifname(struct ieee80211vap *vap)
1059 if (vap->iv_ifp == NULL)
1061 return vap->iv_ifp->if_xname;
1066 ieee80211_debugnet_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
1068 struct ieee80211vap *vap;
1069 struct ieee80211com *ic;
1071 vap = if_getsoftc(ifp);
1075 ic->ic_debugnet_meth->dn8_init(ic, nrxr, ncl, clsize);
1076 IEEE80211_UNLOCK(ic);
1080 ieee80211_debugnet_event(struct ifnet *ifp, enum debugnet_ev ev)
1082 struct ieee80211vap *vap;
1083 struct ieee80211com *ic;
1085 vap = if_getsoftc(ifp);
1089 ic->ic_debugnet_meth->dn8_event(ic, ev);
1090 IEEE80211_UNLOCK(ic);
1094 ieee80211_debugnet_transmit(struct ifnet *ifp, struct mbuf *m)
1096 return (ieee80211_vap_transmit(ifp, m));
1100 ieee80211_debugnet_poll(struct ifnet *ifp, int count)
1102 struct ieee80211vap *vap;
1103 struct ieee80211com *ic;
1105 vap = if_getsoftc(ifp);
1108 return (ic->ic_debugnet_meth->dn8_poll(ic, count));
1115 * NB: the module name is "wlan" for compatibility with NetBSD.
1118 wlan_modevent(module_t mod, int type, void *unused)
1123 printf("wlan: <802.11 Link Layer>\n");
1124 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
1125 bpf_track, 0, EVENTHANDLER_PRI_ANY);
1126 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
1127 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
1128 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
1129 wlan_clone_destroy, 0);
1132 if_clone_detach(wlan_cloner);
1133 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1134 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1140 static moduledata_t wlan_mod = {
1145 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1146 MODULE_VERSION(wlan, 1);
1147 MODULE_DEPEND(wlan, ether, 1, 1, 1);
1148 #ifdef IEEE80211_ALQ
1149 MODULE_DEPEND(wlan, alq, 1, 1, 1);
1150 #endif /* IEEE80211_ALQ */