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>
50 #include <net/debugnet.h>
52 #include <net/if_var.h>
53 #include <net/if_dl.h>
54 #include <net/if_clone.h>
55 #include <net/if_media.h>
56 #include <net/if_types.h>
57 #include <net/ethernet.h>
58 #include <net/route.h>
61 #include <net80211/ieee80211_var.h>
62 #include <net80211/ieee80211_input.h>
64 DEBUGNET_DEFINE(ieee80211);
65 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
66 "IEEE 80211 parameters");
68 #ifdef IEEE80211_DEBUG
69 static int ieee80211_debug = 0;
70 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
71 0, "debugging printfs");
74 static const char wlanname[] = "wlan";
75 static struct if_clone *wlan_cloner;
78 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
80 struct ieee80211_clone_params cp;
81 struct ieee80211vap *vap;
82 struct ieee80211com *ic;
85 error = copyin(params, &cp, sizeof(cp));
88 ic = ieee80211_find_com(cp.icp_parent);
91 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
92 ic_printf(ic, "%s: invalid opmode %d\n", __func__,
96 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
97 ic_printf(ic, "%s mode not supported\n",
98 ieee80211_opmode_name[cp.icp_opmode]);
101 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
102 #ifdef IEEE80211_SUPPORT_TDMA
103 (ic->ic_caps & IEEE80211_C_TDMA) == 0
108 ic_printf(ic, "TDMA not supported\n");
111 vap = ic->ic_vap_create(ic, wlanname, unit,
112 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
113 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
114 cp.icp_macaddr : ic->ic_macaddr);
120 if (ic->ic_debugnet_meth != NULL)
121 DEBUGNET_SET(vap->iv_ifp, ieee80211);
127 wlan_clone_destroy(struct ifnet *ifp)
129 struct ieee80211vap *vap = ifp->if_softc;
130 struct ieee80211com *ic = vap->iv_ic;
132 ic->ic_vap_delete(vap);
136 ieee80211_vap_destroy(struct ieee80211vap *vap)
138 CURVNET_SET(vap->iv_ifp->if_vnet);
139 if_clone_destroyif(wlan_cloner, vap->iv_ifp);
144 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
146 int msecs = ticks_to_msecs(*(int *)arg1);
149 error = sysctl_handle_int(oidp, &msecs, 0, req);
150 if (error || !req->newptr)
152 *(int *)arg1 = msecs_to_ticks(msecs);
157 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
159 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
162 error = sysctl_handle_int(oidp, &inact, 0, req);
163 if (error || !req->newptr)
165 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
170 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
172 struct ieee80211com *ic = arg1;
174 return SYSCTL_OUT_STR(req, ic->ic_name);
178 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
180 struct ieee80211com *ic = arg1;
183 error = sysctl_handle_int(oidp, &t, 0, req);
184 if (error || !req->newptr)
187 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
188 IEEE80211_UNLOCK(ic);
193 * For now, just restart everything.
195 * Later on, it'd be nice to have a separate VAP restart to
196 * full-device restart.
199 ieee80211_sysctl_vap_restart(SYSCTL_HANDLER_ARGS)
201 struct ieee80211vap *vap = arg1;
204 error = sysctl_handle_int(oidp, &t, 0, req);
205 if (error || !req->newptr)
208 ieee80211_restart_all(vap->iv_ic);
213 ieee80211_sysctl_attach(struct ieee80211com *ic)
218 ieee80211_sysctl_detach(struct ieee80211com *ic)
223 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
225 struct ifnet *ifp = vap->iv_ifp;
226 struct sysctl_ctx_list *ctx;
227 struct sysctl_oid *oid;
228 char num[14]; /* sufficient for 32 bits */
230 ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
231 M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
233 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
237 sysctl_ctx_init(ctx);
238 snprintf(num, sizeof(num), "%u", ifp->if_dunit);
239 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
240 OID_AUTO, num, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
241 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
242 "%parent", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
243 vap->iv_ic, 0, ieee80211_sysctl_parent, "A", "parent device");
244 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
245 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
246 "driver capabilities");
247 #ifdef IEEE80211_DEBUG
248 vap->iv_debug = ieee80211_debug;
249 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
250 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
251 "control debugging printfs");
253 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
254 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
255 "consecutive beacon misses before scanning");
256 /* XXX inherit from tunables */
257 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
258 "inact_run", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
259 &vap->iv_inact_run, 0, ieee80211_sysctl_inact, "I",
260 "station inactivity timeout (sec)");
261 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
262 "inact_probe", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
263 &vap->iv_inact_probe, 0, ieee80211_sysctl_inact, "I",
264 "station inactivity probe timeout (sec)");
265 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
266 "inact_auth", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
267 &vap->iv_inact_auth, 0, ieee80211_sysctl_inact, "I",
268 "station authentication timeout (sec)");
269 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
270 "inact_init", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
271 &vap->iv_inact_init, 0, ieee80211_sysctl_inact, "I",
272 "station initial state timeout (sec)");
273 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
274 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
275 "ampdu_mintraffic_bk", CTLFLAG_RW,
276 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
277 "BK traffic tx aggr threshold (pps)");
278 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
279 "ampdu_mintraffic_be", CTLFLAG_RW,
280 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
281 "BE traffic tx aggr threshold (pps)");
282 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
283 "ampdu_mintraffic_vo", CTLFLAG_RW,
284 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
285 "VO traffic tx aggr threshold (pps)");
286 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
287 "ampdu_mintraffic_vi", CTLFLAG_RW,
288 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
289 "VI traffic tx aggr threshold (pps)");
292 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
293 "force_restart", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
294 vap, 0, ieee80211_sysctl_vap_restart, "I", "force a VAP restart");
296 if (vap->iv_caps & IEEE80211_C_DFS) {
297 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
298 "radar", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
299 vap->iv_ic, 0, ieee80211_sysctl_radar, "I",
300 "simulate radar event");
302 vap->iv_sysctl = ctx;
307 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
310 if (vap->iv_sysctl != NULL) {
311 sysctl_ctx_free(vap->iv_sysctl);
312 IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
313 vap->iv_sysctl = NULL;
317 #define MS(_v, _f) (((_v) & _f##_M) >> _f##_S)
319 ieee80211_com_vincref(struct ieee80211vap *vap)
323 ostate = atomic_fetchadd_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
325 if (ostate & IEEE80211_COM_DETACHED) {
326 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
330 if (MS(ostate, IEEE80211_COM_REF) == IEEE80211_COM_REF_MAX) {
331 atomic_subtract_32(&vap->iv_com_state, IEEE80211_COM_REF_ADD);
339 ieee80211_com_vdecref(struct ieee80211vap *vap)
343 ostate = atomic_fetchadd_32(&vap->iv_com_state, -IEEE80211_COM_REF_ADD);
345 KASSERT(MS(ostate, IEEE80211_COM_REF) != 0,
346 ("com reference counter underflow"));
352 ieee80211_com_vdetach(struct ieee80211vap *vap)
356 sleep_time = msecs_to_ticks(250);
357 atomic_set_32(&vap->iv_com_state, IEEE80211_COM_DETACHED);
358 while (MS(atomic_load_32(&vap->iv_com_state), IEEE80211_COM_REF) != 0)
359 pause("comref", sleep_time);
364 ieee80211_node_dectestref(struct ieee80211_node *ni)
366 /* XXX need equivalent of atomic_dec_and_test */
367 atomic_subtract_int(&ni->ni_refcnt, 1);
368 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
372 ieee80211_drain_ifq(struct ifqueue *ifq)
374 struct ieee80211_node *ni;
382 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
383 KASSERT(ni != NULL, ("frame w/o node"));
384 ieee80211_free_node(ni);
385 m->m_pkthdr.rcvif = NULL;
392 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
394 struct ieee80211_node *ni;
395 struct mbuf *m, **mprev;
398 mprev = &ifq->ifq_head;
399 while ((m = *mprev) != NULL) {
400 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
401 if (ni != NULL && ni->ni_vap == vap) {
402 *mprev = m->m_nextpkt; /* remove from list */
406 ieee80211_free_node(ni); /* reclaim ref */
408 mprev = &m->m_nextpkt;
410 /* recalculate tail ptr */
412 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
419 * As above, for mbufs allocated with m_gethdr/MGETHDR
420 * or initialized by M_COPY_PKTHDR.
422 #define MC_ALIGN(m, len) \
424 (m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long)); \
425 } while (/* CONSTCOND */ 0)
428 * Allocate and setup a management frame of the specified
429 * size. We return the mbuf and a pointer to the start
430 * of the contiguous data area that's been reserved based
431 * on the packet length. The data area is forced to 32-bit
432 * alignment and the buffer length to a multiple of 4 bytes.
433 * This is done mainly so beacon frames (that require this)
434 * can use this interface too.
437 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
443 * NB: we know the mbuf routines will align the data area
444 * so we don't need to do anything special.
446 len = roundup2(headroom + pktlen, 4);
447 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
448 if (len < MINCLSIZE) {
449 m = m_gethdr(M_NOWAIT, MT_DATA);
451 * Align the data in case additional headers are added.
452 * This should only happen when a WEP header is added
453 * which only happens for shared key authentication mgt
454 * frames which all fit in MHLEN.
459 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
464 m->m_data += headroom;
470 #ifndef __NO_STRICT_ALIGNMENT
472 * Re-align the payload in the mbuf. This is mainly used (right now)
473 * to handle IP header alignment requirements on certain architectures.
476 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
481 pktlen = m->m_pkthdr.len;
482 space = pktlen + align;
483 if (space < MINCLSIZE)
484 n = m_gethdr(M_NOWAIT, MT_DATA);
486 n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
487 space <= MCLBYTES ? MCLBYTES :
488 #if MJUMPAGESIZE != MCLBYTES
489 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
491 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
493 if (__predict_true(n != NULL)) {
495 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
496 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
499 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
500 mtod(m, const struct ieee80211_frame *), NULL,
501 "%s", "no mbuf to realign");
502 vap->iv_stats.is_rx_badalign++;
507 #endif /* !__NO_STRICT_ALIGNMENT */
510 ieee80211_add_callback(struct mbuf *m,
511 void (*func)(struct ieee80211_node *, void *, int), void *arg)
514 struct ieee80211_cb *cb;
516 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
517 sizeof(struct ieee80211_cb), M_NOWAIT);
521 cb = (struct ieee80211_cb *)(mtag+1);
524 m_tag_prepend(m, mtag);
525 m->m_flags |= M_TXCB;
530 ieee80211_add_xmit_params(struct mbuf *m,
531 const struct ieee80211_bpf_params *params)
534 struct ieee80211_tx_params *tx;
536 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
537 sizeof(struct ieee80211_tx_params), M_NOWAIT);
541 tx = (struct ieee80211_tx_params *)(mtag+1);
542 memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
543 m_tag_prepend(m, mtag);
548 ieee80211_get_xmit_params(struct mbuf *m,
549 struct ieee80211_bpf_params *params)
552 struct ieee80211_tx_params *tx;
554 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
558 tx = (struct ieee80211_tx_params *)(mtag + 1);
559 memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
564 ieee80211_process_callback(struct ieee80211_node *ni,
565 struct mbuf *m, int status)
569 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
571 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
572 cb->func(ni, cb->arg, status);
577 * Add RX parameters to the given mbuf.
579 * Returns 1 if OK, 0 on error.
582 ieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
585 struct ieee80211_rx_params *rx;
587 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
588 sizeof(struct ieee80211_rx_stats), M_NOWAIT);
592 rx = (struct ieee80211_rx_params *)(mtag + 1);
593 memcpy(&rx->params, rxs, sizeof(*rxs));
594 m_tag_prepend(m, mtag);
599 ieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
602 struct ieee80211_rx_params *rx;
604 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
608 rx = (struct ieee80211_rx_params *)(mtag + 1);
609 memcpy(rxs, &rx->params, sizeof(*rxs));
613 const struct ieee80211_rx_stats *
614 ieee80211_get_rx_params_ptr(struct mbuf *m)
617 struct ieee80211_rx_params *rx;
619 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
623 rx = (struct ieee80211_rx_params *)(mtag + 1);
624 return (&rx->params);
629 * Add TOA parameters to the given mbuf.
632 ieee80211_add_toa_params(struct mbuf *m, const struct ieee80211_toa_params *p)
635 struct ieee80211_toa_params *rp;
637 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
638 sizeof(struct ieee80211_toa_params), M_NOWAIT);
642 rp = (struct ieee80211_toa_params *)(mtag + 1);
643 memcpy(rp, p, sizeof(*rp));
644 m_tag_prepend(m, mtag);
649 ieee80211_get_toa_params(struct mbuf *m, struct ieee80211_toa_params *p)
652 struct ieee80211_toa_params *rp;
654 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_TOA_PARAMS,
658 rp = (struct ieee80211_toa_params *)(mtag + 1);
660 memcpy(p, rp, sizeof(*p));
665 * Transmit a frame to the parent interface.
668 ieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
673 * Assert the IC TX lock is held - this enforces the
674 * processing -> queuing order is maintained
676 IEEE80211_TX_LOCK_ASSERT(ic);
677 error = ic->ic_transmit(ic, m);
679 struct ieee80211_node *ni;
681 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
683 /* XXX number of fragments */
684 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
685 ieee80211_free_node(ni);
686 ieee80211_free_mbuf(m);
692 * Transmit a frame to the VAP interface.
695 ieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
697 struct ifnet *ifp = vap->iv_ifp;
700 * When transmitting via the VAP, we shouldn't hold
701 * any IC TX lock as the VAP TX path will acquire it.
703 IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
705 return (ifp->if_transmit(ifp, m));
709 #include <sys/libkern.h>
712 get_random_bytes(void *p, size_t n)
717 uint32_t v = arc4random();
718 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
719 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
720 dp += sizeof(uint32_t), n -= nb;
725 * Helper function for events that pass just a single mac address.
728 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
730 struct ieee80211_join_event iev;
732 CURVNET_SET(ifp->if_vnet);
733 memset(&iev, 0, sizeof(iev));
734 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
735 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
740 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
742 struct ieee80211vap *vap = ni->ni_vap;
743 struct ifnet *ifp = vap->iv_ifp;
745 CURVNET_SET_QUIET(ifp->if_vnet);
746 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
747 (ni == vap->iv_bss) ? "bss " : "");
749 if (ni == vap->iv_bss) {
750 notify_macaddr(ifp, newassoc ?
751 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
752 if_link_state_change(ifp, LINK_STATE_UP);
754 notify_macaddr(ifp, newassoc ?
755 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
761 ieee80211_notify_node_leave(struct ieee80211_node *ni)
763 struct ieee80211vap *vap = ni->ni_vap;
764 struct ifnet *ifp = vap->iv_ifp;
766 CURVNET_SET_QUIET(ifp->if_vnet);
767 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
768 (ni == vap->iv_bss) ? "bss " : "");
770 if (ni == vap->iv_bss) {
771 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
772 if_link_state_change(ifp, LINK_STATE_DOWN);
774 /* fire off wireless event station leaving */
775 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
781 ieee80211_notify_scan_done(struct ieee80211vap *vap)
783 struct ifnet *ifp = vap->iv_ifp;
785 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
787 /* dispatch wireless event indicating scan completed */
788 CURVNET_SET(ifp->if_vnet);
789 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
794 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
795 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
796 u_int64_t rsc, int tid)
798 struct ifnet *ifp = vap->iv_ifp;
800 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
801 "%s replay detected tid %d <rsc %ju (%jx), csc %ju (%jx), keyix %u rxkeyix %u>",
802 k->wk_cipher->ic_name, tid,
805 (intmax_t) k->wk_keyrsc[tid],
806 (intmax_t) k->wk_keyrsc[tid],
807 k->wk_keyix, k->wk_rxkeyix);
809 if (ifp != NULL) { /* NB: for cipher test modules */
810 struct ieee80211_replay_event iev;
812 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
813 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
814 iev.iev_cipher = k->wk_cipher->ic_cipher;
815 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
816 iev.iev_keyix = k->wk_rxkeyix;
818 iev.iev_keyix = k->wk_keyix;
819 iev.iev_keyrsc = k->wk_keyrsc[tid];
821 CURVNET_SET(ifp->if_vnet);
822 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
828 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
829 const struct ieee80211_frame *wh, u_int keyix)
831 struct ifnet *ifp = vap->iv_ifp;
833 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
834 "michael MIC verification failed <keyix %u>", keyix);
835 vap->iv_stats.is_rx_tkipmic++;
837 if (ifp != NULL) { /* NB: for cipher test modules */
838 struct ieee80211_michael_event iev;
840 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
841 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
842 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
843 iev.iev_keyix = keyix;
844 CURVNET_SET(ifp->if_vnet);
845 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
851 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
853 struct ieee80211vap *vap = ni->ni_vap;
854 struct ifnet *ifp = vap->iv_ifp;
856 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
860 ieee80211_notify_csa(struct ieee80211com *ic,
861 const struct ieee80211_channel *c, int mode, int count)
863 struct ieee80211_csa_event iev;
864 struct ieee80211vap *vap;
867 memset(&iev, 0, sizeof(iev));
868 iev.iev_flags = c->ic_flags;
869 iev.iev_freq = c->ic_freq;
870 iev.iev_ieee = c->ic_ieee;
872 iev.iev_count = count;
873 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
875 CURVNET_SET(ifp->if_vnet);
876 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
882 ieee80211_notify_radar(struct ieee80211com *ic,
883 const struct ieee80211_channel *c)
885 struct ieee80211_radar_event iev;
886 struct ieee80211vap *vap;
889 memset(&iev, 0, sizeof(iev));
890 iev.iev_flags = c->ic_flags;
891 iev.iev_freq = c->ic_freq;
892 iev.iev_ieee = c->ic_ieee;
893 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
895 CURVNET_SET(ifp->if_vnet);
896 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
902 ieee80211_notify_cac(struct ieee80211com *ic,
903 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
905 struct ieee80211_cac_event iev;
906 struct ieee80211vap *vap;
909 memset(&iev, 0, sizeof(iev));
910 iev.iev_flags = c->ic_flags;
911 iev.iev_freq = c->ic_freq;
912 iev.iev_ieee = c->ic_ieee;
914 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
916 CURVNET_SET(ifp->if_vnet);
917 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
923 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
925 struct ieee80211vap *vap = ni->ni_vap;
926 struct ifnet *ifp = vap->iv_ifp;
928 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
930 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
934 ieee80211_notify_node_auth(struct ieee80211_node *ni)
936 struct ieee80211vap *vap = ni->ni_vap;
937 struct ifnet *ifp = vap->iv_ifp;
939 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
941 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
945 ieee80211_notify_country(struct ieee80211vap *vap,
946 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
948 struct ifnet *ifp = vap->iv_ifp;
949 struct ieee80211_country_event iev;
951 memset(&iev, 0, sizeof(iev));
952 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
953 iev.iev_cc[0] = cc[0];
954 iev.iev_cc[1] = cc[1];
955 CURVNET_SET(ifp->if_vnet);
956 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
961 ieee80211_notify_radio(struct ieee80211com *ic, int state)
963 struct ieee80211_radio_event iev;
964 struct ieee80211vap *vap;
967 memset(&iev, 0, sizeof(iev));
968 iev.iev_state = state;
969 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
971 CURVNET_SET(ifp->if_vnet);
972 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
978 ieee80211_notify_ifnet_change(struct ieee80211vap *vap)
980 struct ifnet *ifp = vap->iv_ifp;
982 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG, "%s\n",
983 "interface state change");
985 CURVNET_SET(ifp->if_vnet);
991 ieee80211_load_module(const char *modname)
995 (void)kern_kldload(curthread, modname, NULL);
997 printf("%s: load the %s module by hand for now.\n", __func__, modname);
1001 static eventhandler_tag wlan_bpfevent;
1002 static eventhandler_tag wlan_ifllevent;
1005 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
1007 /* NB: identify vap's by if_init */
1008 if (dlt == DLT_IEEE802_11_RADIO &&
1009 ifp->if_init == ieee80211_init) {
1010 struct ieee80211vap *vap = ifp->if_softc;
1012 * Track bpf radiotap listener state. We mark the vap
1013 * to indicate if any listener is present and the com
1014 * to indicate if any listener exists on any associated
1015 * vap. This flag is used by drivers to prepare radiotap
1016 * state only when needed.
1019 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
1020 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1021 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
1022 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
1023 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
1024 if (vap->iv_opmode == IEEE80211_M_MONITOR)
1025 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
1031 * Change MAC address on the vap (if was not started).
1034 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
1036 /* NB: identify vap's by if_init */
1037 if (ifp->if_init == ieee80211_init &&
1038 (ifp->if_flags & IFF_UP) == 0) {
1039 struct ieee80211vap *vap = ifp->if_softc;
1041 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
1046 * Fetch the VAP name.
1048 * This returns a const char pointer suitable for debugging,
1049 * but don't expect it to stick around for much longer.
1052 ieee80211_get_vap_ifname(struct ieee80211vap *vap)
1054 if (vap->iv_ifp == NULL)
1056 return vap->iv_ifp->if_xname;
1061 ieee80211_debugnet_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
1063 struct ieee80211vap *vap;
1064 struct ieee80211com *ic;
1066 vap = if_getsoftc(ifp);
1070 ic->ic_debugnet_meth->dn8_init(ic, nrxr, ncl, clsize);
1071 IEEE80211_UNLOCK(ic);
1075 ieee80211_debugnet_event(struct ifnet *ifp, enum debugnet_ev ev)
1077 struct ieee80211vap *vap;
1078 struct ieee80211com *ic;
1080 vap = if_getsoftc(ifp);
1084 ic->ic_debugnet_meth->dn8_event(ic, ev);
1085 IEEE80211_UNLOCK(ic);
1089 ieee80211_debugnet_transmit(struct ifnet *ifp, struct mbuf *m)
1091 return (ieee80211_vap_transmit(ifp, m));
1095 ieee80211_debugnet_poll(struct ifnet *ifp, int count)
1097 struct ieee80211vap *vap;
1098 struct ieee80211com *ic;
1100 vap = if_getsoftc(ifp);
1103 return (ic->ic_debugnet_meth->dn8_poll(ic, count));
1110 * NB: the module name is "wlan" for compatibility with NetBSD.
1113 wlan_modevent(module_t mod, int type, void *unused)
1118 printf("wlan: <802.11 Link Layer>\n");
1119 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
1120 bpf_track, 0, EVENTHANDLER_PRI_ANY);
1121 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
1122 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
1123 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
1124 wlan_clone_destroy, 0);
1127 if_clone_detach(wlan_cloner);
1128 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1129 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1135 static moduledata_t wlan_mod = {
1140 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1141 MODULE_VERSION(wlan, 1);
1142 MODULE_DEPEND(wlan, ether, 1, 1, 1);
1143 #ifdef IEEE80211_ALQ
1144 MODULE_DEPEND(wlan, alq, 1, 1, 1);
1145 #endif /* IEEE80211_ALQ */