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 DEBUGNET_DEFINE(ieee80211);
64 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
65 "IEEE 80211 parameters");
67 #ifdef IEEE80211_DEBUG
68 static int ieee80211_debug = 0;
69 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
70 0, "debugging printfs");
73 static const char wlanname[] = "wlan";
74 static struct if_clone *wlan_cloner;
77 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
79 struct ieee80211_clone_params cp;
80 struct ieee80211vap *vap;
81 struct ieee80211com *ic;
84 error = copyin(params, &cp, sizeof(cp));
87 ic = ieee80211_find_com(cp.icp_parent);
90 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
91 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
95 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
96 ic_printf(ic, "%s mode not supported\n",
97 ieee80211_opmode_name[cp.icp_opmode]);
100 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
101 #ifdef IEEE80211_SUPPORT_TDMA
102 (ic->ic_caps & IEEE80211_C_TDMA) == 0
107 ic_printf(ic, "TDMA not supported\n");
110 vap = ic->ic_vap_create(ic, wlanname, unit,
111 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
112 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
113 cp.icp_macaddr : ic->ic_macaddr);
119 if (ic->ic_debugnet_meth != NULL)
120 DEBUGNET_SET(vap->iv_ifp, ieee80211);
126 wlan_clone_destroy(struct ifnet *ifp)
128 struct ieee80211vap *vap = ifp->if_softc;
129 struct ieee80211com *ic = vap->iv_ic;
131 ic->ic_vap_delete(vap);
135 ieee80211_vap_destroy(struct ieee80211vap *vap)
137 CURVNET_SET(vap->iv_ifp->if_vnet);
138 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
143 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
145 int msecs = ticks_to_msecs(*(int *)arg1);
148 error = sysctl_handle_int(oidp, &msecs, 0, req);
149 if (error || !req->newptr)
151 *(int *)arg1 = msecs_to_ticks(msecs);
156 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
158 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
161 error = sysctl_handle_int(oidp, &inact, 0, req);
162 if (error || !req->newptr)
164 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
169 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
171 struct ieee80211com *ic = arg1;
173 return SYSCTL_OUT_STR(req, ic->ic_name);
177 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
179 struct ieee80211com *ic = arg1;
182 error = sysctl_handle_int(oidp, &t, 0, req);
183 if (error || !req->newptr)
186 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
187 IEEE80211_UNLOCK(ic);
192 * For now, just restart everything.
194 * Later on, it'd be nice to have a separate VAP restart to
195 * full-device restart.
198 ieee80211_sysctl_vap_restart(SYSCTL_HANDLER_ARGS)
200 struct ieee80211vap *vap = arg1;
203 error = sysctl_handle_int(oidp, &t, 0, req);
204 if (error || !req->newptr)
207 ieee80211_restart_all(vap->iv_ic);
212 ieee80211_sysctl_attach(struct ieee80211com *ic)
217 ieee80211_sysctl_detach(struct ieee80211com *ic)
222 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
224 struct ifnet *ifp = vap->iv_ifp;
225 struct sysctl_ctx_list *ctx;
226 struct sysctl_oid *oid;
227 char num[14]; /* sufficient for 32 bits */
229 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
230 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
232 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
236 sysctl_ctx_init(ctx);
237 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
238 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
239 OID_AUTO, num, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
240 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
241 "%parent", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
242 vap->iv_ic, 0, ieee80211_sysctl_parent, "A", "parent device");
243 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
244 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
245 "driver capabilities");
246 #ifdef IEEE80211_DEBUG
247 vap->iv_debug = ieee80211_debug;
248 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
249 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
250 "control debugging printfs");
252 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
253 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
254 "consecutive beacon misses before scanning");
255 /* XXX inherit from tunables */
256 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
257 "inact_run", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
258 &vap->iv_inact_run, 0, ieee80211_sysctl_inact, "I",
259 "station inactivity timeout (sec)");
260 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
261 "inact_probe", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
262 &vap->iv_inact_probe, 0, ieee80211_sysctl_inact, "I",
263 "station inactivity probe timeout (sec)");
264 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
265 "inact_auth", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
266 &vap->iv_inact_auth, 0, ieee80211_sysctl_inact, "I",
267 "station authentication timeout (sec)");
268 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
269 "inact_init", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
270 &vap->iv_inact_init, 0, ieee80211_sysctl_inact, "I",
271 "station initial state timeout (sec)");
272 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
273 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
274 "ampdu_mintraffic_bk", CTLFLAG_RW,
275 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
276 "BK traffic tx aggr threshold (pps)");
277 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
278 "ampdu_mintraffic_be", CTLFLAG_RW,
279 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
280 "BE traffic tx aggr threshold (pps)");
281 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
282 "ampdu_mintraffic_vo", CTLFLAG_RW,
283 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
284 "VO traffic tx aggr threshold (pps)");
285 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
286 "ampdu_mintraffic_vi", CTLFLAG_RW,
287 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
288 "VI traffic tx aggr threshold (pps)");
291 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
292 "force_restart", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
293 vap, 0, ieee80211_sysctl_vap_restart, "I", "force a VAP restart");
295 if (vap->iv_caps & IEEE80211_C_DFS) {
296 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
297 "radar", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
298 vap->iv_ic, 0, ieee80211_sysctl_radar, "I",
299 "simulate radar event");
301 vap->iv_sysctl = ctx;
306 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
309 if (vap->iv_sysctl != NULL) {
310 sysctl_ctx_free(vap->iv_sysctl);
311 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
312 vap->iv_sysctl = NULL;
316 #define MS(_v, _f) (((_v) & _f##_M) >> _f##_S)
318 ieee80211_com_vincref(struct ieee80211vap *vap)
322 ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
324 if (ostate & IEEE80211_COM_DETACHED) {
325 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
329 if (MS(ostate, IEEE80211_COM_REF) == IEEE80211_COM_REF_MAX) {
330 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
338 ieee80211_com_vdecref(struct ieee80211vap *vap)
342 ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);
344 KASSERT(MS(ostate, IEEE80211_COM_REF) != 0,
345 ("com reference counter underflow"));
351 ieee80211_com_vdetach(struct ieee80211vap *vap)
355 sleep_time = msecs_to_ticks(250);
356 atomic_set_32(&vap->iv_com_state, IEEE80211_COM_DETACHED);
357 while (MS(atomic_load_32(&vap->iv_com_state), IEEE80211_COM_REF) != 0)
358 pause("comref", sleep_time);
363 ieee80211_node_dectestref(struct ieee80211_node *ni)
365 /* XXX need equivalent of atomic_dec_and_test */
366 atomic_subtract_int(&ni->ni_refcnt, 1);
367 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
371 ieee80211_drain_ifq(struct ifqueue *ifq)
373 struct ieee80211_node *ni;
381 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
382 KASSERT(ni != NULL, ("frame w/o node"));
383 ieee80211_free_node(ni);
384 m->m_pkthdr.rcvif = NULL;
391 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
393 struct ieee80211_node *ni;
394 struct mbuf *m, **mprev;
397 mprev = &ifq->ifq_head;
398 while ((m = *mprev) != NULL) {
399 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
400 if (ni != NULL && ni->ni_vap == vap) {
401 *mprev = m->m_nextpkt; /* remove from list */
405 ieee80211_free_node(ni); /* reclaim ref */
407 mprev = &m->m_nextpkt;
409 /* recalculate tail ptr */
411 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
418 * As above, for mbufs allocated with m_gethdr/MGETHDR
419 * or initialized by M_COPY_PKTHDR.
421 #define MC_ALIGN(m, len) \
423 (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long)); \
424 } while (/* CONSTCOND */ 0)
427 * Allocate and setup a management frame of the specified
428 * size. We return the mbuf and a pointer to the start
429 * of the contiguous data area that's been reserved based
430 * on the packet length. The data area is forced to 32-bit
431 * alignment and the buffer length to a multiple of 4 bytes.
432 * This is done mainly so beacon frames (that require this)
433 * can use this interface too.
436 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
442 * NB: we know the mbuf routines will align the data area
443 * so we don't need to do anything special.
445 len = roundup2(headroom + pktlen, 4);
446 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
447 if (len < MINCLSIZE) {
448 m = m_gethdr(M_NOWAIT, MT_DATA);
450 * Align the data in case additional headers are added.
451 * This should only happen when a WEP header is added
452 * which only happens for shared key authentication mgt
453 * frames which all fit in MHLEN.
458 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
463 m->m_data += headroom;
469 #ifndef __NO_STRICT_ALIGNMENT
471 * Re-align the payload in the mbuf. This is mainly used (right now)
472 * to handle IP header alignment requirements on certain architectures.
475 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
480 pktlen = m->m_pkthdr.len;
481 space = pktlen + align;
482 if (space < MINCLSIZE)
483 n = m_gethdr(M_NOWAIT, MT_DATA);
485 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
486 space <= MCLBYTES ? MCLBYTES :
487 #if MJUMPAGESIZE != MCLBYTES
488 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
490 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
492 if (__predict_true(n != NULL)) {
494 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
495 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
498 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
499 mtod(m, const struct ieee80211_frame *), NULL,
500 "%s", "no mbuf to realign");
501 vap->iv_stats.is_rx_badalign++;
506 #endif /* !__NO_STRICT_ALIGNMENT */
509 ieee80211_add_callback(struct mbuf *m,
510 void (*func)(struct ieee80211_node *, void *, int), void *arg)
513 struct ieee80211_cb *cb;
515 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
516 sizeof(struct ieee80211_cb), M_NOWAIT);
520 cb = (struct ieee80211_cb *)(mtag+1);
523 m_tag_prepend(m, mtag);
524 m->m_flags |= M_TXCB;
529 ieee80211_add_xmit_params(struct mbuf *m,
530 const struct ieee80211_bpf_params *params)
533 struct ieee80211_tx_params *tx;
535 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
536 sizeof(struct ieee80211_tx_params), M_NOWAIT);
540 tx = (struct ieee80211_tx_params *)(mtag+1);
541 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
542 m_tag_prepend(m, mtag);
547 ieee80211_get_xmit_params(struct mbuf *m,
548 struct ieee80211_bpf_params *params)
551 struct ieee80211_tx_params *tx;
553 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
557 tx = (struct ieee80211_tx_params *)(mtag + 1);
558 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
563 ieee80211_process_callback(struct ieee80211_node *ni,
564 struct mbuf *m, int status)
568 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
570 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
571 cb->func(ni, cb->arg, status);
576 * Add RX parameters to the given mbuf.
578 * Returns 1 if OK, 0 on error.
581 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
584 struct ieee80211_rx_params *rx;
586 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
587 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
591 rx = (struct ieee80211_rx_params *)(mtag + 1);
592 memcpy(&rx->params, rxs, sizeof(*rxs));
593 m_tag_prepend(m, mtag);
598 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
601 struct ieee80211_rx_params *rx;
603 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
607 rx = (struct ieee80211_rx_params *)(mtag + 1);
608 memcpy(rxs, &rx->params, sizeof(*rxs));
612 const struct ieee80211_rx_stats *
613 ieee80211_get_rx_params_ptr(struct mbuf *m)
616 struct ieee80211_rx_params *rx;
618 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
622 rx = (struct ieee80211_rx_params *)(mtag + 1);
623 return (&rx->params);
628 * Add TOA parameters to the given mbuf.
631 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
634 struct ieee80211_toa_params *rp;
636 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
637 sizeof(struct ieee80211_toa_params), M_NOWAIT);
641 rp = (struct ieee80211_toa_params *)(mtag + 1);
642 memcpy(rp, p, sizeof(*rp));
643 m_tag_prepend(m, mtag);
648 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
651 struct ieee80211_toa_params *rp;
653 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
657 rp = (struct ieee80211_toa_params *)(mtag + 1);
659 memcpy(p, rp, sizeof(*p));
664 * Transmit a frame to the parent interface.
667 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
672 * Assert the IC TX lock is held - this enforces the
673 * processing -> queuing order is maintained
675 IEEE80211_TX_LOCK_ASSERT(ic);
676 error = ic->ic_transmit(ic, m);
678 struct ieee80211_node *ni;
680 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
682 /* XXX number of fragments */
683 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
684 ieee80211_free_node(ni);
685 ieee80211_free_mbuf(m);
691 * Transmit a frame to the VAP interface.
694 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
696 struct ifnet *ifp = vap->iv_ifp;
699 * When transmitting via the VAP, we shouldn't hold
700 * any IC TX lock as the VAP TX path will acquire it.
702 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
704 return (ifp->if_transmit(ifp, m));
708 #include <sys/libkern.h>
711 get_random_bytes(void *p, size_t n)
716 uint32_t v = arc4random();
717 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
718 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
719 dp += sizeof(uint32_t), n -= nb;
724 * Helper function for events that pass just a single mac address.
727 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
729 struct ieee80211_join_event iev;
731 CURVNET_SET(ifp->if_vnet);
732 memset(&iev, 0, sizeof(iev));
733 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
734 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
739 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
741 struct ieee80211vap *vap = ni->ni_vap;
742 struct ifnet *ifp = vap->iv_ifp;
744 CURVNET_SET_QUIET(ifp->if_vnet);
745 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
746 (ni == vap->iv_bss) ? "bss " : "");
748 if (ni == vap->iv_bss) {
749 notify_macaddr(ifp, newassoc ?
750 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
751 if_link_state_change(ifp, LINK_STATE_UP);
753 notify_macaddr(ifp, newassoc ?
754 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
760 ieee80211_notify_node_leave(struct ieee80211_node *ni)
762 struct ieee80211vap *vap = ni->ni_vap;
763 struct ifnet *ifp = vap->iv_ifp;
765 CURVNET_SET_QUIET(ifp->if_vnet);
766 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
767 (ni == vap->iv_bss) ? "bss " : "");
769 if (ni == vap->iv_bss) {
770 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
771 if_link_state_change(ifp, LINK_STATE_DOWN);
773 /* fire off wireless event station leaving */
774 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
780 ieee80211_notify_scan_done(struct ieee80211vap *vap)
782 struct ifnet *ifp = vap->iv_ifp;
784 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
786 /* dispatch wireless event indicating scan completed */
787 CURVNET_SET(ifp->if_vnet);
788 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
793 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
794 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
795 u_int64_t rsc, int tid)
797 struct ifnet *ifp = vap->iv_ifp;
799 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
800 "%s replay detected tid %d <rsc %ju (%jx), csc %ju (%jx), keyix %u rxkeyix %u>",
801 k->wk_cipher->ic_name, tid,
804 (intmax_t) k->wk_keyrsc[tid],
805 (intmax_t) k->wk_keyrsc[tid],
806 k->wk_keyix, k->wk_rxkeyix);
808 if (ifp != NULL) { /* NB: for cipher test modules */
809 struct ieee80211_replay_event iev;
811 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
812 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
813 iev.iev_cipher = k->wk_cipher->ic_cipher;
814 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
815 iev.iev_keyix = k->wk_rxkeyix;
817 iev.iev_keyix = k->wk_keyix;
818 iev.iev_keyrsc = k->wk_keyrsc[tid];
820 CURVNET_SET(ifp->if_vnet);
821 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
827 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
828 const struct ieee80211_frame *wh, u_int keyix)
830 struct ifnet *ifp = vap->iv_ifp;
832 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
833 "michael MIC verification failed <keyix %u>", keyix);
834 vap->iv_stats.is_rx_tkipmic++;
836 if (ifp != NULL) { /* NB: for cipher test modules */
837 struct ieee80211_michael_event iev;
839 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
840 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
841 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
842 iev.iev_keyix = keyix;
843 CURVNET_SET(ifp->if_vnet);
844 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
850 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
852 struct ieee80211vap *vap = ni->ni_vap;
853 struct ifnet *ifp = vap->iv_ifp;
855 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
859 ieee80211_notify_csa(struct ieee80211com *ic,
860 const struct ieee80211_channel *c, int mode, int count)
862 struct ieee80211_csa_event iev;
863 struct ieee80211vap *vap;
866 memset(&iev, 0, sizeof(iev));
867 iev.iev_flags = c->ic_flags;
868 iev.iev_freq = c->ic_freq;
869 iev.iev_ieee = c->ic_ieee;
871 iev.iev_count = count;
872 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
874 CURVNET_SET(ifp->if_vnet);
875 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
881 ieee80211_notify_radar(struct ieee80211com *ic,
882 const struct ieee80211_channel *c)
884 struct ieee80211_radar_event iev;
885 struct ieee80211vap *vap;
888 memset(&iev, 0, sizeof(iev));
889 iev.iev_flags = c->ic_flags;
890 iev.iev_freq = c->ic_freq;
891 iev.iev_ieee = c->ic_ieee;
892 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
894 CURVNET_SET(ifp->if_vnet);
895 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
901 ieee80211_notify_cac(struct ieee80211com *ic,
902 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
904 struct ieee80211_cac_event iev;
905 struct ieee80211vap *vap;
908 memset(&iev, 0, sizeof(iev));
909 iev.iev_flags = c->ic_flags;
910 iev.iev_freq = c->ic_freq;
911 iev.iev_ieee = c->ic_ieee;
913 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
915 CURVNET_SET(ifp->if_vnet);
916 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
922 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
924 struct ieee80211vap *vap = ni->ni_vap;
925 struct ifnet *ifp = vap->iv_ifp;
927 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
929 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
933 ieee80211_notify_node_auth(struct ieee80211_node *ni)
935 struct ieee80211vap *vap = ni->ni_vap;
936 struct ifnet *ifp = vap->iv_ifp;
938 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
940 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
944 ieee80211_notify_country(struct ieee80211vap *vap,
945 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
947 struct ifnet *ifp = vap->iv_ifp;
948 struct ieee80211_country_event iev;
950 memset(&iev, 0, sizeof(iev));
951 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
952 iev.iev_cc[0] = cc[0];
953 iev.iev_cc[1] = cc[1];
954 CURVNET_SET(ifp->if_vnet);
955 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
960 ieee80211_notify_radio(struct ieee80211com *ic, int state)
962 struct ieee80211_radio_event iev;
963 struct ieee80211vap *vap;
966 memset(&iev, 0, sizeof(iev));
967 iev.iev_state = state;
968 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
970 CURVNET_SET(ifp->if_vnet);
971 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
977 ieee80211_notify_ifnet_change(struct ieee80211vap *vap)
979 struct ifnet *ifp = vap->iv_ifp;
981 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG, "%s\n",
982 "interface state change");
984 CURVNET_SET(ifp->if_vnet);
990 ieee80211_load_module(const char *modname)
994 (void)kern_kldload(curthread, modname, NULL);
996 printf("%s: load the %s module by hand for now.\n", __func__, modname);
1000 static eventhandler_tag wlan_bpfevent;
1001 static eventhandler_tag wlan_ifllevent;
1004 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
1006 /* NB: identify vap's by if_init */
1007 if (dlt == DLT_IEEE802_11_RADIO &&
1008 ifp->if_init == ieee80211_init) {
1009 struct ieee80211vap *vap = ifp->if_softc;
1011 * Track bpf radiotap listener state. We mark the vap
1012 * to indicate if any listener is present and the com
1013 * to indicate if any listener exists on any associated
1014 * vap. This flag is used by drivers to prepare radiotap
1015 * state only when needed.
1018 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
1019 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1020 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
1021 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
1022 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
1023 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1024 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
1030 * Change MAC address on the vap (if was not started).
1033 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
1035 /* NB: identify vap's by if_init */
1036 if (ifp->if_init == ieee80211_init &&
1037 (ifp->if_flags & IFF_UP) == 0) {
1038 struct ieee80211vap *vap = ifp->if_softc;
1040 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
1045 * Fetch the VAP name.
1047 * This returns a const char pointer suitable for debugging,
1048 * but don't expect it to stick around for much longer.
1051 ieee80211_get_vap_ifname(struct ieee80211vap *vap)
1053 if (vap->iv_ifp == NULL)
1055 return vap->iv_ifp->if_xname;
1060 ieee80211_debugnet_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
1062 struct ieee80211vap *vap;
1063 struct ieee80211com *ic;
1065 vap = if_getsoftc(ifp);
1069 ic->ic_debugnet_meth->dn8_init(ic, nrxr, ncl, clsize);
1070 IEEE80211_UNLOCK(ic);
1074 ieee80211_debugnet_event(struct ifnet *ifp, enum debugnet_ev ev)
1076 struct ieee80211vap *vap;
1077 struct ieee80211com *ic;
1079 vap = if_getsoftc(ifp);
1083 ic->ic_debugnet_meth->dn8_event(ic, ev);
1084 IEEE80211_UNLOCK(ic);
1088 ieee80211_debugnet_transmit(struct ifnet *ifp, struct mbuf *m)
1090 return (ieee80211_vap_transmit(ifp, m));
1094 ieee80211_debugnet_poll(struct ifnet *ifp, int count)
1096 struct ieee80211vap *vap;
1097 struct ieee80211com *ic;
1099 vap = if_getsoftc(ifp);
1102 return (ic->ic_debugnet_meth->dn8_poll(ic, count));
1109 * NB: the module name is "wlan" for compatibility with NetBSD.
1112 wlan_modevent(module_t mod, int type, void *unused)
1117 printf("wlan: <802.11 Link Layer>\n");
1118 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
1119 bpf_track, 0, EVENTHANDLER_PRI_ANY);
1120 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
1121 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
1122 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
1123 wlan_clone_destroy, 0);
1126 if_clone_detach(wlan_cloner);
1127 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1128 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1134 static moduledata_t wlan_mod = {
1139 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1140 MODULE_VERSION(wlan, 1);
1141 MODULE_DEPEND(wlan, ether, 1, 1, 1);
1142 #ifdef IEEE80211_ALQ
1143 MODULE_DEPEND(wlan, alq, 1, 1, 1);
1144 #endif /* IEEE80211_ALQ */