2 * Copyright (c) 2003-2009 Sam Leffler, Errno Consulting
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 * $FreeBSD: head/sys/net80211/ieee80211_freebsd.c 202612 2010-01-19 05:00:57Z thompsa $
29 * IEEE 802.11 support (DragonFlyBSD-specific code)
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/systm.h>
36 #include <sys/linker.h>
38 #include <sys/module.h>
40 #include <sys/sysctl.h>
42 #include <sys/socket.h>
46 #include <net/if_dl.h>
47 #include <net/if_clone.h>
48 #include <net/if_media.h>
49 #include <net/if_types.h>
50 #include <net/ethernet.h>
51 #include <net/route.h>
52 #include <net/ifq_var.h>
54 #include <netproto/802_11/ieee80211_var.h>
55 #include <netproto/802_11/ieee80211_input.h>
57 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
59 #ifdef IEEE80211_DEBUG
60 int ieee80211_debug = 0;
61 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
62 0, "debugging printfs");
65 int ieee80211_force_swcrypto = 0;
66 SYSCTL_INT(_net_wlan, OID_AUTO, force_swcrypto, CTLFLAG_RW,
67 &ieee80211_force_swcrypto, 0, "force software crypto");
69 MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
72 static int wlan_clone_destroy(struct ifnet *);
73 static int wlan_clone_create(struct if_clone *, int, caddr_t);
75 static struct if_clone wlan_cloner =
76 IF_CLONE_INITIALIZER("wlan", wlan_clone_create, wlan_clone_destroy,
79 struct lwkt_serialize wlan_global_serializer = LWKT_SERIALIZE_INITIALIZER;
82 * Allocate/free com structure in conjunction with ifnet;
83 * these routines are registered with if_register_com_alloc
84 * below and are called automatically by the ifnet code
85 * when the ifnet of the parent device is created.
88 wlan_alloc(u_char type, struct ifnet *ifp)
90 struct ieee80211com *ic;
92 ic = kmalloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO);
99 wlan_free(void *ic, u_char type)
101 kfree(ic, M_80211_COM);
105 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
107 struct ieee80211_clone_params cp;
108 struct ieee80211vap *vap;
109 struct ieee80211com *ic;
113 error = copyin(params, &cp, sizeof(cp));
116 ifp = ifunit(cp.icp_parent);
119 /* XXX move printfs to DIAGNOSTIC before release */
120 if (ifp->if_type != IFT_IEEE80211) {
121 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__);
124 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
125 if_printf(ifp, "%s: invalid opmode %d\n",
126 __func__, cp.icp_opmode);
130 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
131 if_printf(ifp, "%s mode not supported\n",
132 ieee80211_opmode_name[cp.icp_opmode]);
135 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
136 #ifdef IEEE80211_SUPPORT_TDMA
137 (ic->ic_caps & IEEE80211_C_TDMA) == 0
142 if_printf(ifp, "TDMA not supported\n");
145 vap = ic->ic_vap_create(ic, ifc->ifc_name, unit,
146 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
147 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
148 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp));
149 return (vap == NULL ? EIO : 0);
153 wlan_clone_destroy(struct ifnet *ifp)
155 struct ieee80211vap *vap = ifp->if_softc;
156 struct ieee80211com *ic = vap->iv_ic;
158 wlan_serialize_enter(); /* WARNING must be global serializer */
159 ic->ic_vap_delete(vap);
160 wlan_serialize_exit();
165 const char *wlan_last_enter_func;
166 const char *wlan_last_exit_func;
168 * These serializer functions are used by wlan and all drivers.
171 _wlan_serialize_enter(const char *funcname)
173 lwkt_serialize_enter(&wlan_global_serializer);
174 wlan_last_enter_func = funcname;
178 _wlan_serialize_exit(const char *funcname)
180 lwkt_serialize_exit(&wlan_global_serializer);
181 wlan_last_exit_func = funcname;
185 wlan_serialize_sleep(void *ident, int flags, const char *wmesg, int timo)
187 return(zsleep(ident, &wlan_global_serializer, flags, wmesg, timo));
191 * condition-var functions which interlock the ic lock (which is now
192 * just wlan_global_serializer)
195 wlan_cv_init(struct cv *cv, const char *desc)
202 wlan_cv_timedwait(struct cv *cv, int ticks)
207 error = wlan_serialize_sleep(cv, 0, cv->cv_desc, ticks);
212 wlan_cv_wait(struct cv *cv)
215 wlan_serialize_sleep(cv, 0, cv->cv_desc, 0);
219 wlan_cv_signal(struct cv *cv, int broadcast)
221 if (cv->cv_waiters) {
236 ieee80211_vap_destroy(struct ieee80211vap *vap)
238 wlan_assert_serialized();
239 wlan_serialize_exit();
240 if_clone_destroy(vap->iv_ifp->if_xname);
241 wlan_serialize_enter();
245 * NOTE: This handler is used generally to convert milliseconds
246 * to ticks for various simple sysctl variables and does not
247 * need to be serialized.
250 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
252 int msecs = ticks_to_msecs(*(int *)arg1);
255 error = sysctl_handle_int(oidp, &msecs, 0, req);
256 if (error == 0 && req->newptr) {
257 t = msecs_to_ticks(msecs);
258 *(int *)arg1 = (t < 1) ? 1 : t;
265 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
267 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
270 error = sysctl_handle_int(oidp, &inact, 0, req);
271 wlan_serialize_enter();
272 if (error == 0 && req->newptr)
273 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
274 wlan_serialize_exit();
280 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
282 struct ieee80211com *ic = arg1;
283 const char *name = ic->ic_ifp->if_xname;
285 return SYSCTL_OUT(req, name, strlen(name));
289 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
291 struct ieee80211com *ic = arg1;
294 error = sysctl_handle_int(oidp, &t, 0, req);
295 wlan_serialize_enter();
296 if (error == 0 && req->newptr)
297 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
298 wlan_serialize_exit();
304 ieee80211_sysctl_attach(struct ieee80211com *ic)
309 ieee80211_sysctl_detach(struct ieee80211com *ic)
314 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
316 struct ifnet *ifp = vap->iv_ifp;
317 struct sysctl_ctx_list *ctx;
318 struct sysctl_oid *oid;
319 char num[14]; /* sufficient for 32 bits */
321 ctx = (struct sysctl_ctx_list *) kmalloc(sizeof(struct sysctl_ctx_list),
322 M_DEVBUF, M_INTWAIT | M_ZERO);
324 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
328 sysctl_ctx_init(ctx);
329 ksnprintf(num, sizeof(num), "%u", ifp->if_dunit);
330 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
331 OID_AUTO, num, CTLFLAG_RD, NULL, "");
332 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
333 "%parent", CTLFLAG_RD, vap->iv_ic, 0,
334 ieee80211_sysctl_parent, "A", "parent device");
335 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
336 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
337 "driver capabilities");
338 #ifdef IEEE80211_DEBUG
339 vap->iv_debug = ieee80211_debug;
340 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
341 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
342 "control debugging printfs");
344 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
345 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
346 "consecutive beacon misses before scanning");
347 /* XXX inherit from tunables */
348 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
349 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
350 ieee80211_sysctl_inact, "I",
351 "station inactivity timeout (sec)");
352 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
353 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
354 ieee80211_sysctl_inact, "I",
355 "station inactivity probe timeout (sec)");
356 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
357 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
358 ieee80211_sysctl_inact, "I",
359 "station authentication timeout (sec)");
360 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
361 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
362 ieee80211_sysctl_inact, "I",
363 "station initial state timeout (sec)");
364 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
365 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
366 "ampdu_mintraffic_bk", CTLFLAG_RW,
367 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
368 "BK traffic tx aggr threshold (pps)");
369 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
370 "ampdu_mintraffic_be", CTLFLAG_RW,
371 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
372 "BE traffic tx aggr threshold (pps)");
373 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
374 "ampdu_mintraffic_vo", CTLFLAG_RW,
375 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
376 "VO traffic tx aggr threshold (pps)");
377 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
378 "ampdu_mintraffic_vi", CTLFLAG_RW,
379 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
380 "VI traffic tx aggr threshold (pps)");
382 if (vap->iv_caps & IEEE80211_C_DFS) {
383 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
384 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
385 ieee80211_sysctl_radar, "I", "simulate radar event");
387 vap->iv_sysctl = ctx;
392 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
395 if (vap->iv_sysctl != NULL) {
396 sysctl_ctx_free(vap->iv_sysctl);
397 kfree(vap->iv_sysctl, M_DEVBUF);
398 vap->iv_sysctl = NULL;
403 ieee80211_node_dectestref(struct ieee80211_node *ni)
405 /* XXX need equivalent of atomic_dec_and_test */
406 atomic_subtract_int(&ni->ni_refcnt, 1);
407 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
410 /* XXX this breaks ALTQ's packet scheduler */
412 ieee80211_flush_ifq(struct ifaltq *ifq, struct ieee80211vap *vap)
414 struct ieee80211_node *ni;
415 struct mbuf *m, **mprev;
416 struct ifaltq_subque *ifsq = ifq_get_subq_default(ifq);
418 wlan_assert_serialized();
425 mprev = &ifsq->ifsq_norm_head;
426 while ((m = *mprev) != NULL) {
427 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
428 if (ni != NULL && ni->ni_vap == vap) {
429 *mprev = m->m_nextpkt; /* remove from list */
430 ALTQ_SQ_CNTR_DEC(ifsq, m->m_pkthdr.len);
433 ieee80211_free_node(ni); /* reclaim ref */
435 mprev = &m->m_nextpkt;
437 /* recalculate tail ptr */
438 m = ifsq->ifsq_norm_head;
439 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
441 ifsq->ifsq_norm_tail = m;
446 mprev = &ifsq->ifsq_prio_head;
447 while ((m = *mprev) != NULL) {
448 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
449 if (ni != NULL && ni->ni_vap == vap) {
450 *mprev = m->m_nextpkt; /* remove from list */
451 ALTQ_SQ_CNTR_DEC(ifsq, m->m_pkthdr.len);
452 ALTQ_SQ_PRIO_CNTR_DEC(ifsq, m->m_pkthdr.len);
455 ieee80211_free_node(ni); /* reclaim ref */
457 mprev = &m->m_nextpkt;
459 /* recalculate tail ptr */
460 m = ifsq->ifsq_prio_head;
461 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
463 ifsq->ifsq_prio_tail = m;
465 ALTQ_SQ_UNLOCK(ifsq);
469 * As above, for mbufs allocated with m_gethdr/MGETHDR
470 * or initialized by M_COPY_PKTHDR.
472 #define MC_ALIGN(m, len) \
474 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \
475 } while (/* CONSTCOND */ 0)
478 * Allocate and setup a management frame of the specified
479 * size. We return the mbuf and a pointer to the start
480 * of the contiguous data area that's been reserved based
481 * on the packet length. The data area is forced to 32-bit
482 * alignment and the buffer length to a multiple of 4 bytes.
483 * This is done mainly so beacon frames (that require this)
484 * can use this interface too.
487 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
493 * NB: we know the mbuf routines will align the data area
494 * so we don't need to do anything special.
496 len = roundup2(headroom + pktlen, 4);
497 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
498 if (len < MINCLSIZE) {
499 m = m_gethdr(MB_DONTWAIT, MT_DATA);
501 * Align the data in case additional headers are added.
502 * This should only happen when a WEP header is added
503 * which only happens for shared key authentication mgt
504 * frames which all fit in MHLEN.
509 m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
514 m->m_data += headroom;
521 * Re-align the payload in the mbuf. This is mainly used (right now)
522 * to handle IP header alignment requirements on certain architectures.
525 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
528 struct mbuf *n = NULL;
530 pktlen = m->m_pkthdr.len;
531 space = pktlen + align;
532 if (space < MINCLSIZE)
533 n = m_gethdr(MB_DONTWAIT, MT_DATA);
536 n = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR,
537 space <= MCLBYTES ? MCLBYTES :
538 #if MJUMPAGESIZE != MCLBYTES
539 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
541 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
544 if (__predict_true(n != NULL)) {
546 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
547 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
550 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
551 mtod(m, const struct ieee80211_frame *), NULL,
552 "%s", "no mbuf to realign");
553 vap->iv_stats.is_rx_badalign++;
560 ieee80211_add_callback(struct mbuf *m,
561 void (*func)(struct ieee80211_node *, void *, int), void *arg)
564 struct ieee80211_cb *cb;
566 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
567 sizeof(struct ieee80211_cb), M_INTWAIT);
571 cb = (struct ieee80211_cb *)(mtag+1);
574 m_tag_prepend(m, mtag);
575 m->m_flags |= M_TXCB;
580 ieee80211_process_callback(struct ieee80211_node *ni,
581 struct mbuf *m, int status)
585 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
587 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
588 cb->func(ni, cb->arg, status);
592 #include <sys/libkern.h>
595 get_random_bytes(void *p, size_t n)
600 uint32_t v = karc4random();
601 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
602 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
603 dp += sizeof(uint32_t), n -= nb;
608 * Helper function for events that pass just a single mac address.
611 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
613 struct ieee80211_join_event iev;
615 memset(&iev, 0, sizeof(iev));
616 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
617 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
621 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
623 struct ieee80211vap *vap = ni->ni_vap;
624 struct ifnet *ifp = vap->iv_ifp;
626 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
627 (ni == vap->iv_bss) ? "bss " : "");
629 if (ni == vap->iv_bss) {
630 notify_macaddr(ifp, newassoc ?
631 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
632 if_link_state_change(ifp);
634 notify_macaddr(ifp, newassoc ?
635 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
640 ieee80211_notify_node_leave(struct ieee80211_node *ni)
642 struct ieee80211vap *vap = ni->ni_vap;
643 struct ifnet *ifp = vap->iv_ifp;
645 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
646 (ni == vap->iv_bss) ? "bss " : "");
648 if (ni == vap->iv_bss) {
649 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
650 if_link_state_change(ifp);
652 /* fire off wireless event station leaving */
653 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
658 ieee80211_notify_scan_done(struct ieee80211vap *vap)
660 struct ifnet *ifp = vap->iv_ifp;
662 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
664 /* dispatch wireless event indicating scan completed */
665 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
669 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
670 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
671 u_int64_t rsc, int tid)
673 struct ifnet *ifp = vap->iv_ifp;
675 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
676 "%s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
677 k->wk_cipher->ic_name, (intmax_t) rsc,
678 (intmax_t) k->wk_keyrsc[tid],
679 k->wk_keyix, k->wk_rxkeyix);
681 if (ifp != NULL) { /* NB: for cipher test modules */
682 struct ieee80211_replay_event iev;
684 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
685 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
686 iev.iev_cipher = k->wk_cipher->ic_cipher;
687 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
688 iev.iev_keyix = k->wk_rxkeyix;
690 iev.iev_keyix = k->wk_keyix;
691 iev.iev_keyrsc = k->wk_keyrsc[tid];
693 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
698 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
699 const struct ieee80211_frame *wh, u_int keyix)
701 struct ifnet *ifp = vap->iv_ifp;
703 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
704 "michael MIC verification failed <keyix %u>", keyix);
705 vap->iv_stats.is_rx_tkipmic++;
707 if (ifp != NULL) { /* NB: for cipher test modules */
708 struct ieee80211_michael_event iev;
710 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
711 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
712 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
713 iev.iev_keyix = keyix;
714 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
719 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
721 struct ieee80211vap *vap = ni->ni_vap;
722 struct ifnet *ifp = vap->iv_ifp;
724 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
728 ieee80211_notify_csa(struct ieee80211com *ic,
729 const struct ieee80211_channel *c, int mode, int count)
731 struct ifnet *ifp = ic->ic_ifp;
732 struct ieee80211_csa_event iev;
734 memset(&iev, 0, sizeof(iev));
735 iev.iev_flags = c->ic_flags;
736 iev.iev_freq = c->ic_freq;
737 iev.iev_ieee = c->ic_ieee;
739 iev.iev_count = count;
740 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
744 ieee80211_notify_radar(struct ieee80211com *ic,
745 const struct ieee80211_channel *c)
747 struct ifnet *ifp = ic->ic_ifp;
748 struct ieee80211_radar_event iev;
750 memset(&iev, 0, sizeof(iev));
751 iev.iev_flags = c->ic_flags;
752 iev.iev_freq = c->ic_freq;
753 iev.iev_ieee = c->ic_ieee;
754 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
758 ieee80211_notify_cac(struct ieee80211com *ic,
759 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
761 struct ifnet *ifp = ic->ic_ifp;
762 struct ieee80211_cac_event iev;
764 memset(&iev, 0, sizeof(iev));
765 iev.iev_flags = c->ic_flags;
766 iev.iev_freq = c->ic_freq;
767 iev.iev_ieee = c->ic_ieee;
769 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
773 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
775 struct ieee80211vap *vap = ni->ni_vap;
776 struct ifnet *ifp = vap->iv_ifp;
778 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
780 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
784 ieee80211_notify_node_auth(struct ieee80211_node *ni)
786 struct ieee80211vap *vap = ni->ni_vap;
787 struct ifnet *ifp = vap->iv_ifp;
789 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
791 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
795 ieee80211_notify_country(struct ieee80211vap *vap,
796 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
798 struct ifnet *ifp = vap->iv_ifp;
799 struct ieee80211_country_event iev;
801 memset(&iev, 0, sizeof(iev));
802 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
803 iev.iev_cc[0] = cc[0];
804 iev.iev_cc[1] = cc[1];
805 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
809 ieee80211_notify_radio(struct ieee80211com *ic, int state)
811 struct ifnet *ifp = ic->ic_ifp;
812 struct ieee80211_radio_event iev;
814 memset(&iev, 0, sizeof(iev));
815 iev.iev_state = state;
816 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
820 ieee80211_handoff(struct ifnet *dst_ifp, struct mbuf *m)
824 /* We may be sending a fragment so traverse the mbuf */
825 wlan_assert_serialized();
826 wlan_serialize_exit();
828 struct altq_pktattr pktattr;
833 if (ifq_is_enabled(&dst_ifp->if_snd))
834 altq_etherclassify(&dst_ifp->if_snd, m, &pktattr);
836 ifq_dispatch(dst_ifp, m, &pktattr);
838 wlan_serialize_enter();
843 /* IEEE Std 802.11a-1999, page 9, table 79 */
844 #define IEEE80211_OFDM_SYM_TIME 4
845 #define IEEE80211_OFDM_PREAMBLE_TIME 16
846 #define IEEE80211_OFDM_SIGNAL_TIME 4
847 /* IEEE Std 802.11g-2003, page 44 */
848 #define IEEE80211_OFDM_SIGNAL_EXT_TIME 6
850 /* IEEE Std 802.11a-1999, page 7, figure 107 */
851 #define IEEE80211_OFDM_PLCP_SERVICE_NBITS 16
852 #define IEEE80211_OFDM_TAIL_NBITS 6
854 #define IEEE80211_OFDM_NBITS(frmlen) \
855 (IEEE80211_OFDM_PLCP_SERVICE_NBITS + \
856 ((frmlen) * NBBY) + \
857 IEEE80211_OFDM_TAIL_NBITS)
859 #define IEEE80211_OFDM_NBITS_PER_SYM(kbps) \
860 (((kbps) * IEEE80211_OFDM_SYM_TIME) / 1000)
862 #define IEEE80211_OFDM_NSYMS(kbps, frmlen) \
863 howmany(IEEE80211_OFDM_NBITS((frmlen)), \
864 IEEE80211_OFDM_NBITS_PER_SYM((kbps)))
866 #define IEEE80211_OFDM_TXTIME(kbps, frmlen) \
867 (IEEE80211_OFDM_PREAMBLE_TIME + \
868 IEEE80211_OFDM_SIGNAL_TIME + \
869 (IEEE80211_OFDM_NSYMS((kbps), (frmlen)) * IEEE80211_OFDM_SYM_TIME))
871 /* IEEE Std 802.11b-1999, page 28, subclause 18.3.4 */
872 #define IEEE80211_CCK_PREAMBLE_LEN 144
873 #define IEEE80211_CCK_PLCP_HDR_TIME 48
874 #define IEEE80211_CCK_SHPREAMBLE_LEN 72
875 #define IEEE80211_CCK_SHPLCP_HDR_TIME 24
877 #define IEEE80211_CCK_NBITS(frmlen) ((frmlen) * NBBY)
878 #define IEEE80211_CCK_TXTIME(kbps, frmlen) \
879 (((IEEE80211_CCK_NBITS((frmlen)) * 1000) + (kbps) - 1) / (kbps))
882 ieee80211_txtime(struct ieee80211_node *ni, u_int len, uint8_t rs_rate,
885 struct ieee80211vap *vap = ni->ni_vap;
889 rs_rate &= IEEE80211_RATE_VAL;
890 rate = rs_rate * 500; /* ieee80211 rate -> kbps */
892 if (vap->iv_ic->ic_phytype == IEEE80211_T_OFDM) {
894 * IEEE Std 802.11a-1999, page 37, equation (29)
895 * IEEE Std 802.11g-2003, page 44, equation (42)
897 txtime = IEEE80211_OFDM_TXTIME(rate, len);
898 if (vap->iv_ic->ic_curmode == IEEE80211_MODE_11G)
899 txtime += IEEE80211_OFDM_SIGNAL_EXT_TIME;
902 * IEEE Std 802.11b-1999, page 28, subclause 18.3.4
903 * IEEE Std 802.11g-2003, page 45, equation (43)
905 if (vap->iv_ic->ic_phytype == IEEE80211_T_OFDM_QUARTER+1)
907 txtime = IEEE80211_CCK_TXTIME(rate, len);
910 * Short preamble is not applicable for DS 1Mbits/s
912 if (rs_rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) {
913 txtime += IEEE80211_CCK_SHPREAMBLE_LEN +
914 IEEE80211_CCK_SHPLCP_HDR_TIME;
916 txtime += IEEE80211_CCK_PREAMBLE_LEN +
917 IEEE80211_CCK_PLCP_HDR_TIME;
924 ieee80211_load_module(const char *modname)
928 (void)kern_kldload(curthread, modname, NULL);
930 kprintf("%s: load the %s module by hand for now.\n", __func__, modname);
934 static eventhandler_tag wlan_bpfevent;
935 static eventhandler_tag wlan_ifllevent;
938 bpf_track_event(void *arg, struct ifnet *ifp, int dlt, int attach)
940 /* NB: identify vap's by if_start */
942 wlan_serialize_enter();
943 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) {
944 struct ieee80211vap *vap = ifp->if_softc;
946 * Track bpf radiotap listener state. We mark the vap
947 * to indicate if any listener is present and the com
948 * to indicate if any listener exists on any associated
949 * vap. This flag is used by drivers to prepare radiotap
950 * state only when needed.
953 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
954 if (vap->iv_opmode == IEEE80211_M_MONITOR)
955 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
956 } else if (!vap->iv_rawbpf) {
957 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
958 if (vap->iv_opmode == IEEE80211_M_MONITOR)
959 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
962 wlan_serialize_exit();
966 wlan_iflladdr_event(void *arg __unused, struct ifnet *ifp)
968 struct ieee80211com *ic = ifp->if_l2com;
969 struct ieee80211vap *vap, *next;
971 wlan_serialize_enter();
972 if (ifp->if_type != IFT_IEEE80211 || ic == NULL) {
973 wlan_serialize_exit();
977 TAILQ_FOREACH_MUTABLE(vap, &ic->ic_vaps, iv_next, next) {
979 * If the MAC address has changed on the parent and it was
980 * copied to the vap on creation then re-sync.
982 if (vap->iv_ic == ic &&
983 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) {
984 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
985 wlan_serialize_exit();
986 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp),
988 wlan_serialize_enter();
991 wlan_serialize_exit();
997 * NB: the module name is "wlan" for compatibility with NetBSD.
1000 wlan_modevent(module_t mod, int type, void *unused)
1004 wlan_serialize_enter();
1009 kprintf("wlan: <802.11 Link Layer>\n");
1010 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
1012 EVENTHANDLER_PRI_ANY);
1013 if (wlan_bpfevent == NULL) {
1017 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
1018 wlan_iflladdr_event, NULL,
1019 EVENTHANDLER_PRI_ANY);
1020 if (wlan_ifllevent == NULL) {
1021 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1025 if_clone_attach(&wlan_cloner);
1026 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free);
1030 if_deregister_com_alloc(IFT_IEEE80211);
1031 if_clone_detach(&wlan_cloner);
1032 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
1033 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
1040 wlan_serialize_exit();
1045 static moduledata_t wlan_mod = {
1050 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
1051 MODULE_VERSION(wlan, 1);
1052 MODULE_DEPEND(wlan, ether, 1, 1, 1);