ieee80211_freebsd.c revision 299171
1138568Ssam/*-
2186904Ssam * Copyright (c) 2003-2009 Sam Leffler, Errno Consulting
3138568Ssam * All rights reserved.
4138568Ssam *
5138568Ssam * Redistribution and use in source and binary forms, with or without
6138568Ssam * modification, are permitted provided that the following conditions
7138568Ssam * are met:
8138568Ssam * 1. Redistributions of source code must retain the above copyright
9138568Ssam *    notice, this list of conditions and the following disclaimer.
10138568Ssam * 2. Redistributions in binary form must reproduce the above copyright
11138568Ssam *    notice, this list of conditions and the following disclaimer in the
12138568Ssam *    documentation and/or other materials provided with the distribution.
13138568Ssam *
14138568Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15138568Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16138568Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17138568Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18138568Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19138568Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20138568Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21138568Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22138568Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23138568Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24138568Ssam */
25138568Ssam
26138568Ssam#include <sys/cdefs.h>
27138568Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_freebsd.c 299171 2016-05-06 11:41:49Z avos $");
28138568Ssam
29138568Ssam/*
30138568Ssam * IEEE 802.11 support (FreeBSD-specific code)
31138568Ssam */
32178354Ssam#include "opt_wlan.h"
33178354Ssam
34138568Ssam#include <sys/param.h>
35138568Ssam#include <sys/systm.h>
36293470Smelifaro#include <sys/eventhandler.h>
37295126Sglebius#include <sys/kernel.h>
38138568Ssam#include <sys/linker.h>
39295126Sglebius#include <sys/malloc.h>
40138568Ssam#include <sys/mbuf.h>
41138568Ssam#include <sys/module.h>
42138568Ssam#include <sys/proc.h>
43138568Ssam#include <sys/sysctl.h>
44138568Ssam
45138568Ssam#include <sys/socket.h>
46138568Ssam
47192468Ssam#include <net/bpf.h>
48138568Ssam#include <net/if.h>
49257176Sglebius#include <net/if_var.h>
50190526Ssam#include <net/if_dl.h>
51178354Ssam#include <net/if_clone.h>
52138568Ssam#include <net/if_media.h>
53178354Ssam#include <net/if_types.h>
54138568Ssam#include <net/ethernet.h>
55138568Ssam#include <net/route.h>
56196019Srwatson#include <net/vnet.h>
57138568Ssam
58138568Ssam#include <net80211/ieee80211_var.h>
59195757Ssam#include <net80211/ieee80211_input.h>
60138568Ssam
61138568SsamSYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters");
62138568Ssam
63138568Ssam#ifdef IEEE80211_DEBUG
64138568Ssamint	ieee80211_debug = 0;
65138568SsamSYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug,
66138568Ssam	    0, "debugging printfs");
67138568Ssam#endif
68138568Ssam
69227293Sedstatic MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state");
70178354Ssam
71241610Sglebiusstatic const char wlanname[] = "wlan";
72241610Sglebiusstatic struct if_clone *wlan_cloner;
73241610Sglebius
74138568Ssamstatic int
75178354Ssamwlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
76173273Ssam{
77178354Ssam	struct ieee80211_clone_params cp;
78178354Ssam	struct ieee80211vap *vap;
79178354Ssam	struct ieee80211com *ic;
80173273Ssam	int error;
81173273Ssam
82178354Ssam	error = copyin(params, &cp, sizeof(cp));
83178354Ssam	if (error)
84178354Ssam		return error;
85287197Sglebius	ic = ieee80211_find_com(cp.icp_parent);
86287197Sglebius	if (ic == NULL)
87178354Ssam		return ENXIO;
88178957Ssam	if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) {
89287197Sglebius		ic_printf(ic, "%s: invalid opmode %d\n", __func__,
90287197Sglebius		    cp.icp_opmode);
91178354Ssam		return EINVAL;
92178354Ssam	}
93178957Ssam	if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) {
94287197Sglebius		ic_printf(ic, "%s mode not supported\n",
95178957Ssam		    ieee80211_opmode_name[cp.icp_opmode]);
96178957Ssam		return EOPNOTSUPP;
97178957Ssam	}
98186904Ssam	if ((cp.icp_flags & IEEE80211_CLONE_TDMA) &&
99186904Ssam#ifdef IEEE80211_SUPPORT_TDMA
100186904Ssam	    (ic->ic_caps & IEEE80211_C_TDMA) == 0
101186904Ssam#else
102186904Ssam	    (1)
103186904Ssam#endif
104186904Ssam	) {
105287197Sglebius		ic_printf(ic, "TDMA not supported\n");
106186904Ssam		return EOPNOTSUPP;
107186904Ssam	}
108241610Sglebius	vap = ic->ic_vap_create(ic, wlanname, unit,
109178354Ssam			cp.icp_opmode, cp.icp_flags, cp.icp_bssid,
110178354Ssam			cp.icp_flags & IEEE80211_CLONE_MACADDR ?
111287197Sglebius			    cp.icp_macaddr : ic->ic_macaddr);
112242154Sadrian
113178354Ssam	return (vap == NULL ? EIO : 0);
114178354Ssam}
115178354Ssam
116178354Ssamstatic void
117178354Ssamwlan_clone_destroy(struct ifnet *ifp)
118178354Ssam{
119178354Ssam	struct ieee80211vap *vap = ifp->if_softc;
120178354Ssam	struct ieee80211com *ic = vap->iv_ic;
121178354Ssam
122178354Ssam	ic->ic_vap_delete(vap);
123178354Ssam}
124178354Ssam
125178354Ssamvoid
126178354Ssamieee80211_vap_destroy(struct ieee80211vap *vap)
127178354Ssam{
128242149Sadrian	CURVNET_SET(vap->iv_ifp->if_vnet);
129241610Sglebius	if_clone_destroyif(wlan_cloner, vap->iv_ifp);
130242149Sadrian	CURVNET_RESTORE();
131178354Ssam}
132178354Ssam
133192473Ssamint
134178354Ssamieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS)
135178354Ssam{
136178354Ssam	int msecs = ticks_to_msecs(*(int *)arg1);
137178354Ssam	int error, t;
138178354Ssam
139178354Ssam	error = sysctl_handle_int(oidp, &msecs, 0, req);
140173273Ssam	if (error || !req->newptr)
141173273Ssam		return error;
142178354Ssam	t = msecs_to_ticks(msecs);
143178354Ssam	*(int *)arg1 = (t < 1) ? 1 : t;
144173273Ssam	return 0;
145173273Ssam}
146178354Ssam
147173273Ssamstatic int
148138568Ssamieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS)
149138568Ssam{
150138568Ssam	int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT;
151138568Ssam	int error;
152138568Ssam
153138568Ssam	error = sysctl_handle_int(oidp, &inact, 0, req);
154138568Ssam	if (error || !req->newptr)
155138568Ssam		return error;
156138568Ssam	*(int *)arg1 = inact / IEEE80211_INACT_WAIT;
157138568Ssam	return 0;
158138568Ssam}
159138568Ssam
160138568Ssamstatic int
161138568Ssamieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS)
162138568Ssam{
163138568Ssam	struct ieee80211com *ic = arg1;
164138568Ssam
165283529Sglebius	return SYSCTL_OUT_STR(req, ic->ic_name);
166138568Ssam}
167138568Ssam
168181194Ssamstatic int
169181194Ssamieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS)
170181194Ssam{
171181194Ssam	struct ieee80211com *ic = arg1;
172181194Ssam	int t = 0, error;
173181194Ssam
174181194Ssam	error = sysctl_handle_int(oidp, &t, 0, req);
175181194Ssam	if (error || !req->newptr)
176181194Ssam		return error;
177181194Ssam	IEEE80211_LOCK(ic);
178181194Ssam	ieee80211_dfs_notify_radar(ic, ic->ic_curchan);
179181194Ssam	IEEE80211_UNLOCK(ic);
180181194Ssam	return 0;
181181194Ssam}
182181194Ssam
183138568Ssamvoid
184138568Ssamieee80211_sysctl_attach(struct ieee80211com *ic)
185138568Ssam{
186178354Ssam}
187178354Ssam
188178354Ssamvoid
189178354Ssamieee80211_sysctl_detach(struct ieee80211com *ic)
190178354Ssam{
191178354Ssam}
192178354Ssam
193178354Ssamvoid
194178354Ssamieee80211_sysctl_vattach(struct ieee80211vap *vap)
195178354Ssam{
196178354Ssam	struct ifnet *ifp = vap->iv_ifp;
197138568Ssam	struct sysctl_ctx_list *ctx;
198138568Ssam	struct sysctl_oid *oid;
199138568Ssam	char num[14];			/* sufficient for 32 bits */
200138568Ssam
201283538Sadrian	ctx = (struct sysctl_ctx_list *) IEEE80211_MALLOC(sizeof(struct sysctl_ctx_list),
202283538Sadrian		M_DEVBUF, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
203138568Ssam	if (ctx == NULL) {
204178354Ssam		if_printf(ifp, "%s: cannot allocate sysctl context!\n",
205138568Ssam			__func__);
206138568Ssam		return;
207138568Ssam	}
208138568Ssam	sysctl_ctx_init(ctx);
209178354Ssam	snprintf(num, sizeof(num), "%u", ifp->if_dunit);
210138568Ssam	oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan),
211138568Ssam		OID_AUTO, num, CTLFLAG_RD, NULL, "");
212138568Ssam	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
213217554Smdf		"%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0,
214178354Ssam		ieee80211_sysctl_parent, "A", "parent device");
215217322Smdf	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
216178354Ssam		"driver_caps", CTLFLAG_RW, &vap->iv_caps, 0,
217178354Ssam		"driver capabilities");
218138568Ssam#ifdef IEEE80211_DEBUG
219178354Ssam	vap->iv_debug = ieee80211_debug;
220217322Smdf	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
221178354Ssam		"debug", CTLFLAG_RW, &vap->iv_debug, 0,
222138568Ssam		"control debugging printfs");
223138568Ssam#endif
224178354Ssam	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
225178354Ssam		"bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0,
226178354Ssam		"consecutive beacon misses before scanning");
227138568Ssam	/* XXX inherit from tunables */
228138568Ssam	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
229178354Ssam		"inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0,
230138568Ssam		ieee80211_sysctl_inact, "I",
231138568Ssam		"station inactivity timeout (sec)");
232138568Ssam	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
233178354Ssam		"inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0,
234138568Ssam		ieee80211_sysctl_inact, "I",
235138568Ssam		"station inactivity probe timeout (sec)");
236138568Ssam	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
237178354Ssam		"inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0,
238138568Ssam		ieee80211_sysctl_inact, "I",
239138568Ssam		"station authentication timeout (sec)");
240138568Ssam	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
241178354Ssam		"inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0,
242138568Ssam		ieee80211_sysctl_inact, "I",
243138568Ssam		"station initial state timeout (sec)");
244178354Ssam	if (vap->iv_htcaps & IEEE80211_HTC_HT) {
245217322Smdf		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
246178354Ssam			"ampdu_mintraffic_bk", CTLFLAG_RW,
247178354Ssam			&vap->iv_ampdu_mintraffic[WME_AC_BK], 0,
248178354Ssam			"BK traffic tx aggr threshold (pps)");
249217322Smdf		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
250178354Ssam			"ampdu_mintraffic_be", CTLFLAG_RW,
251178354Ssam			&vap->iv_ampdu_mintraffic[WME_AC_BE], 0,
252178354Ssam			"BE traffic tx aggr threshold (pps)");
253217322Smdf		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
254178354Ssam			"ampdu_mintraffic_vo", CTLFLAG_RW,
255178354Ssam			&vap->iv_ampdu_mintraffic[WME_AC_VO], 0,
256178354Ssam			"VO traffic tx aggr threshold (pps)");
257217322Smdf		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
258178354Ssam			"ampdu_mintraffic_vi", CTLFLAG_RW,
259178354Ssam			&vap->iv_ampdu_mintraffic[WME_AC_VI], 0,
260178354Ssam			"VI traffic tx aggr threshold (pps)");
261178354Ssam	}
262181194Ssam	if (vap->iv_caps & IEEE80211_C_DFS) {
263181194Ssam		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
264181194Ssam			"radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0,
265193115Ssam			ieee80211_sysctl_radar, "I", "simulate radar event");
266181194Ssam	}
267178354Ssam	vap->iv_sysctl = ctx;
268178354Ssam	vap->iv_oid = oid;
269138568Ssam}
270138568Ssam
271138568Ssamvoid
272178354Ssamieee80211_sysctl_vdetach(struct ieee80211vap *vap)
273138568Ssam{
274138568Ssam
275178354Ssam	if (vap->iv_sysctl != NULL) {
276178354Ssam		sysctl_ctx_free(vap->iv_sysctl);
277283538Sadrian		IEEE80211_FREE(vap->iv_sysctl, M_DEVBUF);
278178354Ssam		vap->iv_sysctl = NULL;
279138568Ssam	}
280138568Ssam}
281138568Ssam
282138568Ssamint
283138568Ssamieee80211_node_dectestref(struct ieee80211_node *ni)
284138568Ssam{
285138568Ssam	/* XXX need equivalent of atomic_dec_and_test */
286138568Ssam	atomic_subtract_int(&ni->ni_refcnt, 1);
287138568Ssam	return atomic_cmpset_int(&ni->ni_refcnt, 0, 1);
288138568Ssam}
289138568Ssam
290165894Ssamvoid
291165894Ssamieee80211_drain_ifq(struct ifqueue *ifq)
292165894Ssam{
293165894Ssam	struct ieee80211_node *ni;
294165894Ssam	struct mbuf *m;
295165894Ssam
296165894Ssam	for (;;) {
297165894Ssam		IF_DEQUEUE(ifq, m);
298165894Ssam		if (m == NULL)
299165894Ssam			break;
300165894Ssam
301165894Ssam		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
302165894Ssam		KASSERT(ni != NULL, ("frame w/o node"));
303165894Ssam		ieee80211_free_node(ni);
304165894Ssam		m->m_pkthdr.rcvif = NULL;
305165894Ssam
306165894Ssam		m_freem(m);
307165894Ssam	}
308165894Ssam}
309165894Ssam
310178354Ssamvoid
311178354Ssamieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap)
312178354Ssam{
313178354Ssam	struct ieee80211_node *ni;
314178354Ssam	struct mbuf *m, **mprev;
315178354Ssam
316178354Ssam	IF_LOCK(ifq);
317178354Ssam	mprev = &ifq->ifq_head;
318178354Ssam	while ((m = *mprev) != NULL) {
319178354Ssam		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
320178354Ssam		if (ni != NULL && ni->ni_vap == vap) {
321178354Ssam			*mprev = m->m_nextpkt;		/* remove from list */
322178354Ssam			ifq->ifq_len--;
323178354Ssam
324178354Ssam			m_freem(m);
325178354Ssam			ieee80211_free_node(ni);	/* reclaim ref */
326178354Ssam		} else
327178354Ssam			mprev = &m->m_nextpkt;
328178354Ssam	}
329178354Ssam	/* recalculate tail ptr */
330178354Ssam	m = ifq->ifq_head;
331178354Ssam	for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt)
332178354Ssam		;
333178354Ssam	ifq->ifq_tail = m;
334178354Ssam	IF_UNLOCK(ifq);
335178354Ssam}
336178354Ssam
337138568Ssam/*
338170530Ssam * As above, for mbufs allocated with m_gethdr/MGETHDR
339170530Ssam * or initialized by M_COPY_PKTHDR.
340170530Ssam */
341170530Ssam#define	MC_ALIGN(m, len)						\
342170530Ssamdo {									\
343298433Spfg	(m)->m_data += rounddown2(MCLBYTES - (len), sizeof(long));	\
344170530Ssam} while (/* CONSTCOND */ 0)
345170530Ssam
346170530Ssam/*
347138568Ssam * Allocate and setup a management frame of the specified
348138568Ssam * size.  We return the mbuf and a pointer to the start
349138568Ssam * of the contiguous data area that's been reserved based
350138568Ssam * on the packet length.  The data area is forced to 32-bit
351138568Ssam * alignment and the buffer length to a multiple of 4 bytes.
352138568Ssam * This is done mainly so beacon frames (that require this)
353138568Ssam * can use this interface too.
354138568Ssam */
355138568Ssamstruct mbuf *
356170530Ssamieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen)
357138568Ssam{
358138568Ssam	struct mbuf *m;
359138568Ssam	u_int len;
360138568Ssam
361138568Ssam	/*
362138568Ssam	 * NB: we know the mbuf routines will align the data area
363138568Ssam	 *     so we don't need to do anything special.
364138568Ssam	 */
365170530Ssam	len = roundup2(headroom + pktlen, 4);
366138568Ssam	KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len));
367138568Ssam	if (len < MINCLSIZE) {
368151967Sandre		m = m_gethdr(M_NOWAIT, MT_DATA);
369138568Ssam		/*
370138568Ssam		 * Align the data in case additional headers are added.
371138568Ssam		 * This should only happen when a WEP header is added
372138568Ssam		 * which only happens for shared key authentication mgt
373138568Ssam		 * frames which all fit in MHLEN.
374138568Ssam		 */
375138568Ssam		if (m != NULL)
376276692Srwatson			M_ALIGN(m, len);
377170530Ssam	} else {
378151967Sandre		m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
379170530Ssam		if (m != NULL)
380170530Ssam			MC_ALIGN(m, len);
381170530Ssam	}
382138568Ssam	if (m != NULL) {
383171984Ssephe		m->m_data += headroom;
384138568Ssam		*frm = m->m_data;
385138568Ssam	}
386138568Ssam	return m;
387138568Ssam}
388138568Ssam
389246710Sglebius#ifndef __NO_STRICT_ALIGNMENT
390195757Ssam/*
391195757Ssam * Re-align the payload in the mbuf.  This is mainly used (right now)
392195757Ssam * to handle IP header alignment requirements on certain architectures.
393195757Ssam */
394195757Ssamstruct mbuf *
395195757Ssamieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align)
396195757Ssam{
397195757Ssam	int pktlen, space;
398195757Ssam	struct mbuf *n;
399195757Ssam
400195757Ssam	pktlen = m->m_pkthdr.len;
401195757Ssam	space = pktlen + align;
402195757Ssam	if (space < MINCLSIZE)
403243882Sglebius		n = m_gethdr(M_NOWAIT, MT_DATA);
404195757Ssam	else {
405243882Sglebius		n = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
406195757Ssam		    space <= MCLBYTES ?     MCLBYTES :
407195757Ssam#if MJUMPAGESIZE != MCLBYTES
408195757Ssam		    space <= MJUMPAGESIZE ? MJUMPAGESIZE :
409195757Ssam#endif
410195757Ssam		    space <= MJUM9BYTES ?   MJUM9BYTES : MJUM16BYTES);
411195757Ssam	}
412195757Ssam	if (__predict_true(n != NULL)) {
413195757Ssam		m_move_pkthdr(n, m);
414195757Ssam		n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align);
415195757Ssam		m_copydata(m, 0, pktlen, mtod(n, caddr_t));
416195757Ssam		n->m_len = pktlen;
417195757Ssam	} else {
418195757Ssam		IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
419195757Ssam		    mtod(m, const struct ieee80211_frame *), NULL,
420195757Ssam		    "%s", "no mbuf to realign");
421195757Ssam		vap->iv_stats.is_rx_badalign++;
422195757Ssam	}
423195757Ssam	m_freem(m);
424195757Ssam	return n;
425195757Ssam}
426246710Sglebius#endif /* !__NO_STRICT_ALIGNMENT */
427195757Ssam
428170530Ssamint
429170530Ssamieee80211_add_callback(struct mbuf *m,
430170530Ssam	void (*func)(struct ieee80211_node *, void *, int), void *arg)
431170530Ssam{
432170530Ssam	struct m_tag *mtag;
433170530Ssam	struct ieee80211_cb *cb;
434170530Ssam
435170530Ssam	mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK,
436170530Ssam			sizeof(struct ieee80211_cb), M_NOWAIT);
437170530Ssam	if (mtag == NULL)
438170530Ssam		return 0;
439170530Ssam
440170530Ssam	cb = (struct ieee80211_cb *)(mtag+1);
441170530Ssam	cb->func = func;
442170530Ssam	cb->arg = arg;
443170530Ssam	m_tag_prepend(m, mtag);
444170530Ssam	m->m_flags |= M_TXCB;
445170530Ssam	return 1;
446170530Ssam}
447170530Ssam
448283980Sadrianint
449283980Sadrianieee80211_add_xmit_params(struct mbuf *m,
450283980Sadrian    const struct ieee80211_bpf_params *params)
451283980Sadrian{
452283980Sadrian	struct m_tag *mtag;
453283980Sadrian	struct ieee80211_tx_params *tx;
454283980Sadrian
455283980Sadrian	mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
456283980Sadrian	    sizeof(struct ieee80211_tx_params), M_NOWAIT);
457283980Sadrian	if (mtag == NULL)
458283980Sadrian		return (0);
459283980Sadrian
460283980Sadrian	tx = (struct ieee80211_tx_params *)(mtag+1);
461283980Sadrian	memcpy(&tx->params, params, sizeof(struct ieee80211_bpf_params));
462283980Sadrian	m_tag_prepend(m, mtag);
463283980Sadrian	return (1);
464283980Sadrian}
465283980Sadrian
466283980Sadrianint
467283980Sadrianieee80211_get_xmit_params(struct mbuf *m,
468283980Sadrian    struct ieee80211_bpf_params *params)
469283980Sadrian{
470283980Sadrian	struct m_tag *mtag;
471283980Sadrian	struct ieee80211_tx_params *tx;
472283980Sadrian
473283980Sadrian	mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_XMIT_PARAMS,
474283980Sadrian	    NULL);
475283980Sadrian	if (mtag == NULL)
476283980Sadrian		return (-1);
477283980Sadrian	tx = (struct ieee80211_tx_params *)(mtag + 1);
478283980Sadrian	memcpy(params, &tx->params, sizeof(struct ieee80211_bpf_params));
479283980Sadrian	return (0);
480283980Sadrian}
481283980Sadrian
482170530Ssamvoid
483170530Ssamieee80211_process_callback(struct ieee80211_node *ni,
484170530Ssam	struct mbuf *m, int status)
485170530Ssam{
486170530Ssam	struct m_tag *mtag;
487170530Ssam
488170530Ssam	mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL);
489170530Ssam	if (mtag != NULL) {
490170530Ssam		struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1);
491170530Ssam		cb->func(ni, cb->arg, status);
492170530Ssam	}
493170530Ssam}
494170530Ssam
495248069Sadrian/*
496288245Sadrian * Add RX parameters to the given mbuf.
497288245Sadrian *
498288245Sadrian * Returns 1 if OK, 0 on error.
499288245Sadrian */
500288245Sadrianint
501288245Sadrianieee80211_add_rx_params(struct mbuf *m, const struct ieee80211_rx_stats *rxs)
502288245Sadrian{
503288245Sadrian	struct m_tag *mtag;
504288245Sadrian	struct ieee80211_rx_params *rx;
505288245Sadrian
506288245Sadrian	mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
507288245Sadrian	    sizeof(struct ieee80211_rx_stats), M_NOWAIT);
508288245Sadrian	if (mtag == NULL)
509288245Sadrian		return (0);
510288245Sadrian
511288245Sadrian	rx = (struct ieee80211_rx_params *)(mtag + 1);
512288245Sadrian	memcpy(&rx->params, rxs, sizeof(*rxs));
513288245Sadrian	m_tag_prepend(m, mtag);
514288245Sadrian	return (1);
515288245Sadrian}
516288245Sadrian
517288245Sadrianint
518288245Sadrianieee80211_get_rx_params(struct mbuf *m, struct ieee80211_rx_stats *rxs)
519288245Sadrian{
520288245Sadrian	struct m_tag *mtag;
521288245Sadrian	struct ieee80211_rx_params *rx;
522288245Sadrian
523288245Sadrian	mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_RECV_PARAMS,
524288245Sadrian	    NULL);
525288245Sadrian	if (mtag == NULL)
526288245Sadrian		return (-1);
527288245Sadrian	rx = (struct ieee80211_rx_params *)(mtag + 1);
528288245Sadrian	memcpy(rxs, &rx->params, sizeof(*rxs));
529288245Sadrian	return (0);
530288245Sadrian}
531288245Sadrian
532288245Sadrian/*
533248069Sadrian * Transmit a frame to the parent interface.
534248069Sadrian */
535248069Sadrianint
536287197Sglebiusieee80211_parent_xmitpkt(struct ieee80211com *ic, struct mbuf *m)
537248069Sadrian{
538287197Sglebius	int error;
539287197Sglebius
540248069Sadrian	/*
541248069Sadrian	 * Assert the IC TX lock is held - this enforces the
542248069Sadrian	 * processing -> queuing order is maintained
543248069Sadrian	 */
544248069Sadrian	IEEE80211_TX_LOCK_ASSERT(ic);
545287197Sglebius	error = ic->ic_transmit(ic, m);
546289164Sadrian	if (error) {
547289164Sadrian		struct ieee80211_node *ni;
548289164Sadrian
549289164Sadrian		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
550289164Sadrian
551289164Sadrian		/* XXX number of fragments */
552289164Sadrian		if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
553289164Sadrian		ieee80211_free_node(ni);
554289162Sadrian		ieee80211_free_mbuf(m);
555289164Sadrian	}
556287197Sglebius	return (error);
557248069Sadrian}
558248069Sadrian
559248069Sadrian/*
560248069Sadrian * Transmit a frame to the VAP interface.
561248069Sadrian */
562248069Sadrianint
563254082Sadrianieee80211_vap_xmitpkt(struct ieee80211vap *vap, struct mbuf *m)
564248069Sadrian{
565248069Sadrian	struct ifnet *ifp = vap->iv_ifp;
566248069Sadrian
567248069Sadrian	/*
568248069Sadrian	 * When transmitting via the VAP, we shouldn't hold
569248069Sadrian	 * any IC TX lock as the VAP TX path will acquire it.
570248069Sadrian	 */
571248069Sadrian	IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic);
572248069Sadrian
573248069Sadrian	return (ifp->if_transmit(ifp, m));
574248069Sadrian
575248069Sadrian}
576248069Sadrian
577138568Ssam#include <sys/libkern.h>
578138568Ssam
579138568Ssamvoid
580138568Ssamget_random_bytes(void *p, size_t n)
581138568Ssam{
582170530Ssam	uint8_t *dp = p;
583138568Ssam
584138568Ssam	while (n > 0) {
585170530Ssam		uint32_t v = arc4random();
586170530Ssam		size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
587170530Ssam		bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
588170530Ssam		dp += sizeof(uint32_t), n -= nb;
589138568Ssam	}
590138568Ssam}
591138568Ssam
592178354Ssam/*
593178354Ssam * Helper function for events that pass just a single mac address.
594178354Ssam */
595178354Ssamstatic void
596178354Ssamnotify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN])
597138568Ssam{
598138568Ssam	struct ieee80211_join_event iev;
599138568Ssam
600191816Szec	CURVNET_SET(ifp->if_vnet);
601144302Ssam	memset(&iev, 0, sizeof(iev));
602178354Ssam	IEEE80211_ADDR_COPY(iev.iev_addr, mac);
603178354Ssam	rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
604191816Szec	CURVNET_RESTORE();
605178354Ssam}
606178354Ssam
607178354Ssamvoid
608178354Ssamieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc)
609178354Ssam{
610178354Ssam	struct ieee80211vap *vap = ni->ni_vap;
611178354Ssam	struct ifnet *ifp = vap->iv_ifp;
612178354Ssam
613191816Szec	CURVNET_SET_QUIET(ifp->if_vnet);
614178354Ssam	IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
615178354Ssam	    (ni == vap->iv_bss) ? "bss " : "");
616178354Ssam
617178354Ssam	if (ni == vap->iv_bss) {
618178354Ssam		notify_macaddr(ifp, newassoc ?
619178354Ssam		    RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid);
620138568Ssam		if_link_state_change(ifp, LINK_STATE_UP);
621144302Ssam	} else {
622178354Ssam		notify_macaddr(ifp, newassoc ?
623178354Ssam		    RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
624138568Ssam	}
625191816Szec	CURVNET_RESTORE();
626138568Ssam}
627138568Ssam
628138568Ssamvoid
629178354Ssamieee80211_notify_node_leave(struct ieee80211_node *ni)
630138568Ssam{
631178354Ssam	struct ieee80211vap *vap = ni->ni_vap;
632178354Ssam	struct ifnet *ifp = vap->iv_ifp;
633138568Ssam
634191816Szec	CURVNET_SET_QUIET(ifp->if_vnet);
635178354Ssam	IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
636178354Ssam	    (ni == vap->iv_bss) ? "bss " : "");
637178354Ssam
638178354Ssam	if (ni == vap->iv_bss) {
639138568Ssam		rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0);
640138568Ssam		if_link_state_change(ifp, LINK_STATE_DOWN);
641138568Ssam	} else {
642138568Ssam		/* fire off wireless event station leaving */
643178354Ssam		notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
644138568Ssam	}
645191816Szec	CURVNET_RESTORE();
646138568Ssam}
647138568Ssam
648138568Ssamvoid
649178354Ssamieee80211_notify_scan_done(struct ieee80211vap *vap)
650138568Ssam{
651178354Ssam	struct ifnet *ifp = vap->iv_ifp;
652138568Ssam
653178354Ssam	IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
654138568Ssam
655138568Ssam	/* dispatch wireless event indicating scan completed */
656191816Szec	CURVNET_SET(ifp->if_vnet);
657138568Ssam	rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
658191816Szec	CURVNET_RESTORE();
659138568Ssam}
660138568Ssam
661138568Ssamvoid
662178354Ssamieee80211_notify_replay_failure(struct ieee80211vap *vap,
663138568Ssam	const struct ieee80211_frame *wh, const struct ieee80211_key *k,
664193541Ssam	u_int64_t rsc, int tid)
665138568Ssam{
666178354Ssam	struct ifnet *ifp = vap->iv_ifp;
667138568Ssam
668178354Ssam	IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
669226885Sadrian	    "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>",
670233531Sadrian	    k->wk_cipher->ic_name, tid, (intmax_t) rsc,
671193541Ssam	    (intmax_t) k->wk_keyrsc[tid],
672148863Ssam	    k->wk_keyix, k->wk_rxkeyix);
673138568Ssam
674138568Ssam	if (ifp != NULL) {		/* NB: for cipher test modules */
675138568Ssam		struct ieee80211_replay_event iev;
676138568Ssam
677138568Ssam		IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
678138568Ssam		IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
679138568Ssam		iev.iev_cipher = k->wk_cipher->ic_cipher;
680148863Ssam		if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE)
681148863Ssam			iev.iev_keyix = k->wk_rxkeyix;
682148863Ssam		else
683148863Ssam			iev.iev_keyix = k->wk_keyix;
684193541Ssam		iev.iev_keyrsc = k->wk_keyrsc[tid];
685138568Ssam		iev.iev_rsc = rsc;
686191816Szec		CURVNET_SET(ifp->if_vnet);
687138568Ssam		rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
688191816Szec		CURVNET_RESTORE();
689138568Ssam	}
690138568Ssam}
691138568Ssam
692138568Ssamvoid
693178354Ssamieee80211_notify_michael_failure(struct ieee80211vap *vap,
694138568Ssam	const struct ieee80211_frame *wh, u_int keyix)
695138568Ssam{
696178354Ssam	struct ifnet *ifp = vap->iv_ifp;
697138568Ssam
698178354Ssam	IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
699178354Ssam	    "michael MIC verification failed <keyix %u>", keyix);
700178354Ssam	vap->iv_stats.is_rx_tkipmic++;
701138568Ssam
702138568Ssam	if (ifp != NULL) {		/* NB: for cipher test modules */
703138568Ssam		struct ieee80211_michael_event iev;
704138568Ssam
705138568Ssam		IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1);
706138568Ssam		IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
707138568Ssam		iev.iev_cipher = IEEE80211_CIPHER_TKIP;
708138568Ssam		iev.iev_keyix = keyix;
709191816Szec		CURVNET_SET(ifp->if_vnet);
710138568Ssam		rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
711191816Szec		CURVNET_RESTORE();
712138568Ssam	}
713138568Ssam}
714138568Ssam
715138568Ssamvoid
716178354Ssamieee80211_notify_wds_discover(struct ieee80211_node *ni)
717178354Ssam{
718178354Ssam	struct ieee80211vap *vap = ni->ni_vap;
719178354Ssam	struct ifnet *ifp = vap->iv_ifp;
720178354Ssam
721178354Ssam	notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr);
722178354Ssam}
723178354Ssam
724178354Ssamvoid
725178354Ssamieee80211_notify_csa(struct ieee80211com *ic,
726178354Ssam	const struct ieee80211_channel *c, int mode, int count)
727178354Ssam{
728178354Ssam	struct ieee80211_csa_event iev;
729283539Sglebius	struct ieee80211vap *vap;
730283539Sglebius	struct ifnet *ifp;
731178354Ssam
732178354Ssam	memset(&iev, 0, sizeof(iev));
733178354Ssam	iev.iev_flags = c->ic_flags;
734178354Ssam	iev.iev_freq = c->ic_freq;
735178354Ssam	iev.iev_ieee = c->ic_ieee;
736178354Ssam	iev.iev_mode = mode;
737178354Ssam	iev.iev_count = count;
738283539Sglebius	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
739283539Sglebius		ifp = vap->iv_ifp;
740283539Sglebius		CURVNET_SET(ifp->if_vnet);
741283539Sglebius		rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev));
742283539Sglebius		CURVNET_RESTORE();
743283539Sglebius	}
744178354Ssam}
745178354Ssam
746178354Ssamvoid
747178354Ssamieee80211_notify_radar(struct ieee80211com *ic,
748178354Ssam	const struct ieee80211_channel *c)
749178354Ssam{
750178354Ssam	struct ieee80211_radar_event iev;
751283539Sglebius	struct ieee80211vap *vap;
752283539Sglebius	struct ifnet *ifp;
753178354Ssam
754178354Ssam	memset(&iev, 0, sizeof(iev));
755178354Ssam	iev.iev_flags = c->ic_flags;
756178354Ssam	iev.iev_freq = c->ic_freq;
757178354Ssam	iev.iev_ieee = c->ic_ieee;
758283539Sglebius	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
759283539Sglebius		ifp = vap->iv_ifp;
760283539Sglebius		CURVNET_SET(ifp->if_vnet);
761283539Sglebius		rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev));
762283539Sglebius		CURVNET_RESTORE();
763283539Sglebius	}
764178354Ssam}
765178354Ssam
766178354Ssamvoid
767178354Ssamieee80211_notify_cac(struct ieee80211com *ic,
768178354Ssam	const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type)
769178354Ssam{
770178354Ssam	struct ieee80211_cac_event iev;
771283539Sglebius	struct ieee80211vap *vap;
772283539Sglebius	struct ifnet *ifp;
773178354Ssam
774178354Ssam	memset(&iev, 0, sizeof(iev));
775178354Ssam	iev.iev_flags = c->ic_flags;
776178354Ssam	iev.iev_freq = c->ic_freq;
777178354Ssam	iev.iev_ieee = c->ic_ieee;
778178354Ssam	iev.iev_type = type;
779283539Sglebius	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
780283539Sglebius		ifp = vap->iv_ifp;
781283539Sglebius		CURVNET_SET(ifp->if_vnet);
782283539Sglebius		rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev));
783283539Sglebius		CURVNET_RESTORE();
784283539Sglebius	}
785178354Ssam}
786178354Ssam
787178354Ssamvoid
788178354Ssamieee80211_notify_node_deauth(struct ieee80211_node *ni)
789178354Ssam{
790178354Ssam	struct ieee80211vap *vap = ni->ni_vap;
791178354Ssam	struct ifnet *ifp = vap->iv_ifp;
792178354Ssam
793178354Ssam	IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth");
794178354Ssam
795178354Ssam	notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr);
796178354Ssam}
797178354Ssam
798178354Ssamvoid
799178354Ssamieee80211_notify_node_auth(struct ieee80211_node *ni)
800178354Ssam{
801178354Ssam	struct ieee80211vap *vap = ni->ni_vap;
802178354Ssam	struct ifnet *ifp = vap->iv_ifp;
803178354Ssam
804178354Ssam	IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth");
805178354Ssam
806178354Ssam	notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr);
807178354Ssam}
808178354Ssam
809178354Ssamvoid
810178354Ssamieee80211_notify_country(struct ieee80211vap *vap,
811178354Ssam	const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2])
812178354Ssam{
813178354Ssam	struct ifnet *ifp = vap->iv_ifp;
814178354Ssam	struct ieee80211_country_event iev;
815178354Ssam
816178354Ssam	memset(&iev, 0, sizeof(iev));
817178354Ssam	IEEE80211_ADDR_COPY(iev.iev_addr, bssid);
818178354Ssam	iev.iev_cc[0] = cc[0];
819178354Ssam	iev.iev_cc[1] = cc[1];
820248539Sadrian	CURVNET_SET(ifp->if_vnet);
821178354Ssam	rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev));
822248539Sadrian	CURVNET_RESTORE();
823178354Ssam}
824178354Ssam
825178354Ssamvoid
826178354Ssamieee80211_notify_radio(struct ieee80211com *ic, int state)
827178354Ssam{
828178354Ssam	struct ieee80211_radio_event iev;
829283539Sglebius	struct ieee80211vap *vap;
830283539Sglebius	struct ifnet *ifp;
831178354Ssam
832178354Ssam	memset(&iev, 0, sizeof(iev));
833178354Ssam	iev.iev_state = state;
834283539Sglebius	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
835283539Sglebius		ifp = vap->iv_ifp;
836283539Sglebius		CURVNET_SET(ifp->if_vnet);
837283539Sglebius		rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev));
838283539Sglebius		CURVNET_RESTORE();
839283539Sglebius	}
840178354Ssam}
841178354Ssam
842178354Ssamvoid
843138568Ssamieee80211_load_module(const char *modname)
844138568Ssam{
845159590Sjhb
846138777Ssam#ifdef notyet
847159590Sjhb	(void)kern_kldload(curthread, modname, NULL);
848138777Ssam#else
849138777Ssam	printf("%s: load the %s module by hand for now.\n", __func__, modname);
850138777Ssam#endif
851138568Ssam}
852138568Ssam
853192468Ssamstatic eventhandler_tag wlan_bpfevent;
854299171Savosstatic eventhandler_tag wlan_ifllevent;
855192468Ssam
856192468Ssamstatic void
857192764Ssambpf_track(void *arg, struct ifnet *ifp, int dlt, int attach)
858192468Ssam{
859256294Sadrian	/* NB: identify vap's by if_init */
860254082Sadrian	if (dlt == DLT_IEEE802_11_RADIO &&
861256294Sadrian	    ifp->if_init == ieee80211_init) {
862192468Ssam		struct ieee80211vap *vap = ifp->if_softc;
863192468Ssam		/*
864192468Ssam		 * Track bpf radiotap listener state.  We mark the vap
865192468Ssam		 * to indicate if any listener is present and the com
866192468Ssam		 * to indicate if any listener exists on any associated
867192468Ssam		 * vap.  This flag is used by drivers to prepare radiotap
868192468Ssam		 * state only when needed.
869192468Ssam		 */
870193292Ssam		if (attach) {
871192468Ssam			ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF);
872193292Ssam			if (vap->iv_opmode == IEEE80211_M_MONITOR)
873193292Ssam				atomic_add_int(&vap->iv_ic->ic_montaps, 1);
874193312Ssam		} else if (!bpf_peers_present(vap->iv_rawbpf)) {
875192468Ssam			ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF);
876193292Ssam			if (vap->iv_opmode == IEEE80211_M_MONITOR)
877193292Ssam				atomic_subtract_int(&vap->iv_ic->ic_montaps, 1);
878193292Ssam		}
879192468Ssam	}
880192468Ssam}
881192468Ssam
882138568Ssam/*
883299171Savos * Change MAC address on the vap (if was not started).
884299171Savos */
885299171Savosstatic void
886299171Savoswlan_iflladdr(void *arg __unused, struct ifnet *ifp)
887299171Savos{
888299171Savos	/* NB: identify vap's by if_init */
889299171Savos	if (ifp->if_init == ieee80211_init &&
890299171Savos	    (ifp->if_flags & IFF_UP) == 0) {
891299171Savos		struct ieee80211vap *vap = ifp->if_softc;
892299171Savos
893299171Savos		IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp));
894299171Savos	}
895299171Savos}
896299171Savos
897299171Savos/*
898138568Ssam * Module glue.
899138568Ssam *
900138568Ssam * NB: the module name is "wlan" for compatibility with NetBSD.
901138568Ssam */
902138568Ssamstatic int
903138568Ssamwlan_modevent(module_t mod, int type, void *unused)
904138568Ssam{
905138568Ssam	switch (type) {
906138568Ssam	case MOD_LOAD:
907138568Ssam		if (bootverbose)
908138568Ssam			printf("wlan: <802.11 Link Layer>\n");
909192468Ssam		wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track,
910192468Ssam		    bpf_track, 0, EVENTHANDLER_PRI_ANY);
911299171Savos		wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
912299171Savos		    wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
913241610Sglebius		wlan_cloner = if_clone_simple(wlanname, wlan_clone_create,
914241610Sglebius		    wlan_clone_destroy, 0);
915138568Ssam		return 0;
916138568Ssam	case MOD_UNLOAD:
917241610Sglebius		if_clone_detach(wlan_cloner);
918192468Ssam		EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent);
919299171Savos		EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent);
920138568Ssam		return 0;
921138568Ssam	}
922138568Ssam	return EINVAL;
923138568Ssam}
924138568Ssam
925138568Ssamstatic moduledata_t wlan_mod = {
926241610Sglebius	wlanname,
927138568Ssam	wlan_modevent,
928241394Skevlo	0
929138568Ssam};
930138568SsamDECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
931138568SsamMODULE_VERSION(wlan, 1);
932138568SsamMODULE_DEPEND(wlan, ether, 1, 1, 1);
933233050Sadrian#ifdef	IEEE80211_ALQ
934233050SadrianMODULE_DEPEND(wlan, alq, 1, 1, 1);
935233050Sadrian#endif	/* IEEE80211_ALQ */
936233050Sadrian
937