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 $
30 * IEEE 802.11 support (DragonFlyBSD-specific code)
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/systm.h>
37 #include <sys/linker.h>
39 #include <sys/module.h>
41 #include <sys/sysctl.h>
43 #include <sys/socket.h>
47 #include <net/if_dl.h>
48 #include <net/if_clone.h>
49 #include <net/if_media.h>
50 #include <net/if_types.h>
51 #include <net/ethernet.h>
52 #include <net/route.h>
53 #include <net/ifq_var.h>
55 #include <netproto/802_11/ieee80211_var.h>
56 #include <netproto/802_11/ieee80211_input.h>
58 SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
60 #ifdef IEEE80211_DEBUG
61 int ieee80211_debug = 0;
62 SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
63 0, "debugging printfs");
66 MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
69 static void wlan_clone_destroy(struct ifnet *);
70 static int wlan_clone_create(struct if_clone *, int, caddr_t);
72 static struct if_clone wlan_cloner =
73 IF_CLONE_INITIALIZER("wlan", wlan_clone_create, wlan_clone_destroy,
78 * Allocate/free com structure in conjunction with ifnet;
79 * these routines are registered with if_register_com_alloc
80 * below and are called automatically by the ifnet code
81 * when the ifnet of the parent device is created.
84 wlan_alloc(u_char type, struct ifnet *ifp)
86 struct ieee80211com *ic;
88 ic = kmalloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO);
95 wlan_free(void *ic, u_char type)
97 kfree(ic, M_80211_COM);
101 wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
103 struct ieee80211_clone_params cp;
104 struct ieee80211vap *vap;
105 struct ieee80211com *ic;
109 error = copyin(params, &cp, sizeof(cp));
112 ifp = ifunit(cp.icp_parent);
115 /* XXX move printfs to DIAGNOSTIC before release */
116 if (ifp->if_type != IFT_IEEE80211) {
117 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__);
120 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
121 if_printf(ifp, "%s: invalid opmode %d\n",
122 __func__, cp.icp_opmode);
126 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
127 if_printf(ifp, "%s mode not supported\n",
128 ieee80211_opmode_name[cp.icp_opmode]);
131 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
132 #ifdef IEEE80211_SUPPORT_TDMA
133 (ic->ic_caps & IEEE80211_C_TDMA) == 0
138 if_printf(ifp, "TDMA not supported\n");
141 vap = ic->ic_vap_create(ic, ifc->ifc_name, unit,
142 cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
143 cp.icp_flags & IEEE80211_CLONE_MACADDR ?
144 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp));
145 return (vap == NULL ? EIO : 0);
149 wlan_clone_destroy(struct ifnet *ifp)
151 struct ieee80211vap *vap = ifp->if_softc;
152 struct ieee80211com *ic = vap->iv_ic;
154 ic->ic_vap_delete(vap);
158 ieee80211_vap_destroy(struct ieee80211vap *vap)
161 if_clone_destroyif(&wlan_cloner, vap->iv_ifp);
166 ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
168 int msecs = ticks_to_msecs(*(int *)arg1);
171 error = sysctl_handle_int(oidp, &msecs, 0, req);
172 if (error || !req->newptr)
174 t = msecs_to_ticks(msecs);
175 *(int *)arg1 = (t < 1) ? 1 : t;
180 ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
182 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
185 error = sysctl_handle_int(oidp, &inact, 0, req);
186 if (error || !req->newptr)
188 *(int *)arg1 = inact / IEEE80211_INACT_WAIT;
193 ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
195 struct ieee80211com *ic = arg1;
196 const char *name = ic->ic_ifp->if_xname;
198 return SYSCTL_OUT(req, name, strlen(name));
202 ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
204 struct ieee80211com *ic = arg1;
207 error = sysctl_handle_int(oidp, &t, 0, req);
208 if (error || !req->newptr)
211 ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
212 IEEE80211_UNLOCK(ic);
217 ieee80211_sysctl_attach(struct ieee80211com *ic)
222 ieee80211_sysctl_detach(struct ieee80211com *ic)
227 ieee80211_sysctl_vattach(struct ieee80211vap *vap)
229 struct ifnet *ifp = vap->iv_ifp;
230 struct sysctl_ctx_list *ctx;
231 struct sysctl_oid *oid;
232 char num[14]; /* sufficient for 32 bits */
234 ctx = (struct sysctl_ctx_list *) kmalloc(sizeof(struct sysctl_ctx_list),
235 M_DEVBUF, M_INTWAIT | M_ZERO);
237 if_printf(ifp, "%s: cannot allocate sysctl context!\n",
241 sysctl_ctx_init(ctx);
242 ksnprintf(num, sizeof(num), "%u", ifp->if_dunit);
243 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
244 OID_AUTO, num, CTLFLAG_RD, NULL, "");
245 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
246 "%parent", CTLFLAG_RD, vap->iv_ic, 0,
247 ieee80211_sysctl_parent, "A", "parent device");
248 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
249 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
250 "driver capabilities");
251 #ifdef IEEE80211_DEBUG
252 vap->iv_debug = ieee80211_debug;
253 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
254 "debug", CTLFLAG_RW, &vap->iv_debug, 0,
255 "control debugging printfs");
257 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
258 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
259 "consecutive beacon misses before scanning");
260 /* XXX inherit from tunables */
261 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
262 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
263 ieee80211_sysctl_inact, "I",
264 "station inactivity timeout (sec)");
265 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
266 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
267 ieee80211_sysctl_inact, "I",
268 "station inactivity probe timeout (sec)");
269 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
270 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
271 ieee80211_sysctl_inact, "I",
272 "station authentication timeout (sec)");
273 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
274 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
275 ieee80211_sysctl_inact, "I",
276 "station initial state timeout (sec)");
277 if (vap->iv_htcaps & IEEE80211_HTC_HT) {
278 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
279 "ampdu_mintraffic_bk", CTLFLAG_RW,
280 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
281 "BK traffic tx aggr threshold (pps)");
282 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
283 "ampdu_mintraffic_be", CTLFLAG_RW,
284 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
285 "BE traffic tx aggr threshold (pps)");
286 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
287 "ampdu_mintraffic_vo", CTLFLAG_RW,
288 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
289 "VO traffic tx aggr threshold (pps)");
290 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
291 "ampdu_mintraffic_vi", CTLFLAG_RW,
292 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
293 "VI traffic tx aggr threshold (pps)");
295 if (vap->iv_caps & IEEE80211_C_DFS) {
296 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
297 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
298 ieee80211_sysctl_radar, "I", "simulate radar event");
300 vap->iv_sysctl = ctx;
305 ieee80211_sysctl_vdetach(struct ieee80211vap *vap)
308 if (vap->iv_sysctl != NULL) {
309 sysctl_ctx_free(vap->iv_sysctl);
310 kfree(vap->iv_sysctl, M_DEVBUF);
311 vap->iv_sysctl = NULL;
316 ieee80211_node_dectestref(struct ieee80211_node *ni)
318 /* XXX need equivalent of atomic_dec_and_test */
319 atomic_subtract_int(&ni->ni_refcnt, 1);
320 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
324 ieee80211_drain_ifq(struct ifqueue *ifq)
326 struct ieee80211_node *ni;
334 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
335 KASSERT(ni != NULL, ("frame w/o node"));
336 ieee80211_free_node(ni);
337 m->m_pkthdr.rcvif = NULL;
344 ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
346 struct ieee80211_node *ni;
347 struct mbuf *m, **mprev;
350 mprev = &ifq->ifq_head;
351 while ((m = *mprev) != NULL) {
352 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
353 if (ni != NULL && ni->ni_vap == vap) {
354 *mprev = m->m_nextpkt; /* remove from list */
358 ieee80211_free_node(ni); /* reclaim ref */
360 mprev = &m->m_nextpkt;
362 /* recalculate tail ptr */
364 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
371 * As above, for mbufs allocated with m_gethdr/MGETHDR
372 * or initialized by M_COPY_PKTHDR.
374 #define MC_ALIGN(m, len) \
376 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \
377 } while (/* CONSTCOND */ 0)
380 * Allocate and setup a management frame of the specified
381 * size. We return the mbuf and a pointer to the start
382 * of the contiguous data area that's been reserved based
383 * on the packet length. The data area is forced to 32-bit
384 * alignment and the buffer length to a multiple of 4 bytes.
385 * This is done mainly so beacon frames (that require this)
386 * can use this interface too.
389 ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
395 * NB: we know the mbuf routines will align the data area
396 * so we don't need to do anything special.
398 len = roundup2(headroom + pktlen, 4);
399 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
400 if (len < MINCLSIZE) {
401 m = m_gethdr(MB_DONTWAIT, MT_DATA);
403 * Align the data in case additional headers are added.
404 * This should only happen when a WEP header is added
405 * which only happens for shared key authentication mgt
406 * frames which all fit in MHLEN.
411 m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
416 m->m_data += headroom;
423 * Re-align the payload in the mbuf. This is mainly used (right now)
424 * to handle IP header alignment requirements on certain architectures.
427 ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
430 struct mbuf *n = NULL;
432 pktlen = m->m_pkthdr.len;
433 space = pktlen + align;
434 if (space < MINCLSIZE)
435 n = m_gethdr(MB_DONTWAIT, MT_DATA);
438 n = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR,
439 space <= MCLBYTES ? MCLBYTES :
440 #if MJUMPAGESIZE != MCLBYTES
441 space <= MJUMPAGESIZE ? MJUMPAGESIZE :
443 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES);
446 if (__predict_true(n != NULL)) {
448 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
449 m_copydata(m, 0, pktlen, mtod(n, caddr_t));
452 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
453 mtod(m, const struct ieee80211_frame *), NULL,
454 "%s", "no mbuf to realign");
455 vap->iv_stats.is_rx_badalign++;
462 ieee80211_add_callback(struct mbuf *m,
463 void (*func)(struct ieee80211_node *, void *, int), void *arg)
466 struct ieee80211_cb *cb;
468 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
469 sizeof(struct ieee80211_cb), M_INTWAIT);
473 cb = (struct ieee80211_cb *)(mtag+1);
476 m_tag_prepend(m, mtag);
477 m->m_flags |= M_TXCB;
482 ieee80211_process_callback(struct ieee80211_node *ni,
483 struct mbuf *m, int status)
487 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
489 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
490 cb->func(ni, cb->arg, status);
494 #include <sys/libkern.h>
497 get_random_bytes(void *p, size_t n)
502 uint32_t v = karc4random();
503 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
504 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
505 dp += sizeof(uint32_t), n -= nb;
510 * Helper function for events that pass just a single mac address.
513 notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
515 struct ieee80211_join_event iev;
517 memset(&iev, 0, sizeof(iev));
518 IEEE80211_ADDR_COPY(iev.iev_addr, mac);
519 rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
523 ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
525 struct ieee80211vap *vap = ni->ni_vap;
526 struct ifnet *ifp = vap->iv_ifp;
528 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
529 (ni == vap->iv_bss) ? "bss " : "");
531 if (ni == vap->iv_bss) {
532 notify_macaddr(ifp, newassoc ?
533 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
534 if_link_state_change(ifp);
536 notify_macaddr(ifp, newassoc ?
537 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
542 ieee80211_notify_node_leave(struct ieee80211_node *ni)
544 struct ieee80211vap *vap = ni->ni_vap;
545 struct ifnet *ifp = vap->iv_ifp;
547 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
548 (ni == vap->iv_bss) ? "bss " : "");
550 if (ni == vap->iv_bss) {
551 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
552 if_link_state_change(ifp);
554 /* fire off wireless event station leaving */
555 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
560 ieee80211_notify_scan_done(struct ieee80211vap *vap)
562 struct ifnet *ifp = vap->iv_ifp;
564 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
566 /* dispatch wireless event indicating scan completed */
567 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
571 ieee80211_notify_replay_failure(struct ieee80211vap *vap,
572 const struct ieee80211_frame *wh, const struct ieee80211_key *k,
573 u_int64_t rsc, int tid)
575 struct ifnet *ifp = vap->iv_ifp;
577 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
578 "%s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
579 k->wk_cipher->ic_name, (intmax_t) rsc,
580 (intmax_t) k->wk_keyrsc[tid],
581 k->wk_keyix, k->wk_rxkeyix);
583 if (ifp != NULL) { /* NB: for cipher test modules */
584 struct ieee80211_replay_event iev;
586 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
587 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
588 iev.iev_cipher = k->wk_cipher->ic_cipher;
589 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
590 iev.iev_keyix = k->wk_rxkeyix;
592 iev.iev_keyix = k->wk_keyix;
593 iev.iev_keyrsc = k->wk_keyrsc[tid];
595 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
600 ieee80211_notify_michael_failure(struct ieee80211vap *vap,
601 const struct ieee80211_frame *wh, u_int keyix)
603 struct ifnet *ifp = vap->iv_ifp;
605 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
606 "michael MIC verification failed <keyix %u>", keyix);
607 vap->iv_stats.is_rx_tkipmic++;
609 if (ifp != NULL) { /* NB: for cipher test modules */
610 struct ieee80211_michael_event iev;
612 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
613 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
614 iev.iev_cipher = IEEE80211_CIPHER_TKIP;
615 iev.iev_keyix = keyix;
616 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
621 ieee80211_notify_wds_discover(struct ieee80211_node *ni)
623 struct ieee80211vap *vap = ni->ni_vap;
624 struct ifnet *ifp = vap->iv_ifp;
626 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
630 ieee80211_notify_csa(struct ieee80211com *ic,
631 const struct ieee80211_channel *c, int mode, int count)
633 struct ifnet *ifp = ic->ic_ifp;
634 struct ieee80211_csa_event iev;
636 memset(&iev, 0, sizeof(iev));
637 iev.iev_flags = c->ic_flags;
638 iev.iev_freq = c->ic_freq;
639 iev.iev_ieee = c->ic_ieee;
641 iev.iev_count = count;
642 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
646 ieee80211_notify_radar(struct ieee80211com *ic,
647 const struct ieee80211_channel *c)
649 struct ifnet *ifp = ic->ic_ifp;
650 struct ieee80211_radar_event iev;
652 memset(&iev, 0, sizeof(iev));
653 iev.iev_flags = c->ic_flags;
654 iev.iev_freq = c->ic_freq;
655 iev.iev_ieee = c->ic_ieee;
656 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
660 ieee80211_notify_cac(struct ieee80211com *ic,
661 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
663 struct ifnet *ifp = ic->ic_ifp;
664 struct ieee80211_cac_event iev;
666 memset(&iev, 0, sizeof(iev));
667 iev.iev_flags = c->ic_flags;
668 iev.iev_freq = c->ic_freq;
669 iev.iev_ieee = c->ic_ieee;
671 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
675 ieee80211_notify_node_deauth(struct ieee80211_node *ni)
677 struct ieee80211vap *vap = ni->ni_vap;
678 struct ifnet *ifp = vap->iv_ifp;
680 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
682 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
686 ieee80211_notify_node_auth(struct ieee80211_node *ni)
688 struct ieee80211vap *vap = ni->ni_vap;
689 struct ifnet *ifp = vap->iv_ifp;
691 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
693 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
697 ieee80211_notify_country(struct ieee80211vap *vap,
698 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
700 struct ifnet *ifp = vap->iv_ifp;
701 struct ieee80211_country_event iev;
703 memset(&iev, 0, sizeof(iev));
704 IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
705 iev.iev_cc[0] = cc[0];
706 iev.iev_cc[1] = cc[1];
707 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
711 ieee80211_notify_radio(struct ieee80211com *ic, int state)
713 struct ifnet *ifp = ic->ic_ifp;
714 struct ieee80211_radio_event iev;
716 memset(&iev, 0, sizeof(iev));
717 iev.iev_state = state;
718 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
722 ieee80211_handoff(struct ifnet *dst_ifp, struct mbuf *m)
726 /* We may be sending a fragment so traverse the mbuf */
728 struct altq_pktattr pktattr;
733 if (ifq_is_enabled(&dst_ifp->if_snd))
734 altq_etherclassify(&dst_ifp->if_snd, m, &pktattr);
736 ifq_dispatch(dst_ifp, m, &pktattr);
742 /* IEEE Std 802.11a-1999, page 9, table 79 */
743 #define IEEE80211_OFDM_SYM_TIME 4
744 #define IEEE80211_OFDM_PREAMBLE_TIME 16
745 #define IEEE80211_OFDM_SIGNAL_TIME 4
746 /* IEEE Std 802.11g-2003, page 44 */
747 #define IEEE80211_OFDM_SIGNAL_EXT_TIME 6
749 /* IEEE Std 802.11a-1999, page 7, figure 107 */
750 #define IEEE80211_OFDM_PLCP_SERVICE_NBITS 16
751 #define IEEE80211_OFDM_TAIL_NBITS 6
753 #define IEEE80211_OFDM_NBITS(frmlen) \
754 (IEEE80211_OFDM_PLCP_SERVICE_NBITS + \
755 ((frmlen) * NBBY) + \
756 IEEE80211_OFDM_TAIL_NBITS)
758 #define IEEE80211_OFDM_NBITS_PER_SYM(kbps) \
759 (((kbps) * IEEE80211_OFDM_SYM_TIME) / 1000)
761 #define IEEE80211_OFDM_NSYMS(kbps, frmlen) \
762 howmany(IEEE80211_OFDM_NBITS((frmlen)), \
763 IEEE80211_OFDM_NBITS_PER_SYM((kbps)))
765 #define IEEE80211_OFDM_TXTIME(kbps, frmlen) \
766 (IEEE80211_OFDM_PREAMBLE_TIME + \
767 IEEE80211_OFDM_SIGNAL_TIME + \
768 (IEEE80211_OFDM_NSYMS((kbps), (frmlen)) * IEEE80211_OFDM_SYM_TIME))
770 /* IEEE Std 802.11b-1999, page 28, subclause 18.3.4 */
771 #define IEEE80211_CCK_PREAMBLE_LEN 144
772 #define IEEE80211_CCK_PLCP_HDR_TIME 48
773 #define IEEE80211_CCK_SHPREAMBLE_LEN 72
774 #define IEEE80211_CCK_SHPLCP_HDR_TIME 24
776 #define IEEE80211_CCK_NBITS(frmlen) ((frmlen) * NBBY)
777 #define IEEE80211_CCK_TXTIME(kbps, frmlen) \
778 (((IEEE80211_CCK_NBITS((frmlen)) * 1000) + (kbps) - 1) / (kbps))
781 ieee80211_txtime(struct ieee80211_node *ni, u_int len, uint8_t rs_rate,
784 struct ieee80211vap *vap = ni->ni_vap;
788 rs_rate &= IEEE80211_RATE_VAL;
789 rate = rs_rate * 500; /* ieee80211 rate -> kbps */
791 if (vap->iv_ic->ic_phytype == IEEE80211_T_OFDM) {
793 * IEEE Std 802.11a-1999, page 37, equation (29)
794 * IEEE Std 802.11g-2003, page 44, equation (42)
796 txtime = IEEE80211_OFDM_TXTIME(rate, len);
797 if (vap->iv_ic->ic_curmode == IEEE80211_MODE_11G)
798 txtime += IEEE80211_OFDM_SIGNAL_EXT_TIME;
801 * IEEE Std 802.11b-1999, page 28, subclause 18.3.4
802 * IEEE Std 802.11g-2003, page 45, equation (43)
804 if (vap->iv_ic->ic_phytype == IEEE80211_T_OFDM_QUARTER+1)
806 txtime = IEEE80211_CCK_TXTIME(rate, len);
809 * Short preamble is not applicable for DS 1Mbits/s
811 if (rs_rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) {
812 txtime += IEEE80211_CCK_SHPREAMBLE_LEN +
813 IEEE80211_CCK_SHPLCP_HDR_TIME;
815 txtime += IEEE80211_CCK_PREAMBLE_LEN +
816 IEEE80211_CCK_PLCP_HDR_TIME;
823 ieee80211_load_module(const char *modname)
827 (void)kern_kldload(curthread, modname, NULL);
829 kprintf("%s: load the %s module by hand for now.\n", __func__, modname);
833 static eventhandler_tag wlan_bpfevent;
834 static eventhandler_tag wlan_ifllevent;
837 bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
839 /* NB: identify vap's by if_start */
840 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) {
842 struct ieee80211vap *vap = ifp->if_softc;
845 * Track bpf radiotap listener state. We mark the vap
846 * to indicate if any listener is present and the com
847 * to indicate if any listener exists on any associated
848 * vap. This flag is used by drivers to prepare radiotap
849 * state only when needed.
853 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
854 if (vap->iv_opmode == IEEE80211_M_MONITOR)
855 atomic_add_int(&vap->iv_ic->ic_montaps, 1);
856 } else if (!bpf_peers_present(vap->iv_rawbpf)) {
857 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
858 if (vap->iv_opmode == IEEE80211_M_MONITOR)
859 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
866 wlan_iflladdr(void *arg __unused, struct ifnet *ifp)
868 struct ieee80211com *ic = ifp->if_l2com;
869 struct ieee80211vap *vap, *next;
871 if (ifp->if_type != IFT_IEEE80211 || ic == NULL)
875 TAILQ_FOREACH_MUTABLE(vap, &ic->ic_vaps, iv_next, next) {
877 * If the MAC address has changed on the parent and it was
878 * copied to the vap on creation then re-sync.
880 if (vap->iv_ic == ic &&
881 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) {
882 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
883 IEEE80211_UNLOCK(ic);
884 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp),
889 IEEE80211_UNLOCK(ic);
895 * NB: the module name is "wlan" for compatibility with NetBSD.
898 wlan_modevent(module_t mod, int type, void *unused)
903 kprintf("wlan: <802.11 Link Layer>\n");
904 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
905 bpf_track, 0, EVENTHANDLER_PRI_ANY);
906 if (wlan_bpfevent == NULL)
908 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
909 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
910 if (wlan_ifllevent == NULL) {
911 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
914 if_clone_attach(&wlan_cloner);
915 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free);
918 if_deregister_com_alloc(IFT_IEEE80211);
919 if_clone_detach(&wlan_cloner);
920 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
921 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
927 static moduledata_t wlan_mod = {
932 DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
933 MODULE_VERSION(wlan, 1);
934 MODULE_DEPEND(wlan, ether, 1, 1, 1);