ieee80211_proto.c revision 156524 
1/*-
2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2 as published by the Free
19 * Software Foundation.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_proto.c 156524 2006-03-10 06:18:03Z sam $");
35
36/*
37 * IEEE 802.11 protocol support.
38 */
39
40#include "opt_inet.h"
41
42#include <sys/param.h>
43#include <sys/kernel.h>
44#include <sys/systm.h>
45
46#include <sys/socket.h>
47
48#include <net/if.h>
49#include <net/if_media.h>
50#include <net/ethernet.h>		/* XXX for ether_sprintf */
51
52#include <net80211/ieee80211_var.h>
53
54/* XXX tunables */
55#define	AGGRESSIVE_MODE_SWITCH_HYSTERESIS	3	/* pkts / 100ms */
56#define	HIGH_PRI_SWITCH_THRESH			10	/* pkts / 100ms */
57
58#define	IEEE80211_RATE2MBS(r)	(((r) & IEEE80211_RATE_VAL) / 2)
59
60const char *ieee80211_mgt_subtype_name[] = {
61	"assoc_req",	"assoc_resp",	"reassoc_req",	"reassoc_resp",
62	"probe_req",	"probe_resp",	"reserved#6",	"reserved#7",
63	"beacon",	"atim",		"disassoc",	"auth",
64	"deauth",	"reserved#13",	"reserved#14",	"reserved#15"
65};
66const char *ieee80211_ctl_subtype_name[] = {
67	"reserved#0",	"reserved#1",	"reserved#2",	"reserved#3",
68	"reserved#3",	"reserved#5",	"reserved#6",	"reserved#7",
69	"reserved#8",	"reserved#9",	"ps_poll",	"rts",
70	"cts",		"ack",		"cf_end",	"cf_end_ack"
71};
72const char *ieee80211_state_name[IEEE80211_S_MAX] = {
73	"INIT",		/* IEEE80211_S_INIT */
74	"SCAN",		/* IEEE80211_S_SCAN */
75	"AUTH",		/* IEEE80211_S_AUTH */
76	"ASSOC",	/* IEEE80211_S_ASSOC */
77	"RUN"		/* IEEE80211_S_RUN */
78};
79const char *ieee80211_wme_acnames[] = {
80	"WME_AC_BE",
81	"WME_AC_BK",
82	"WME_AC_VI",
83	"WME_AC_VO",
84	"WME_UPSD",
85};
86
87static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
88
89void
90ieee80211_proto_attach(struct ieee80211com *ic)
91{
92	struct ifnet *ifp = ic->ic_ifp;
93
94	/* XXX room for crypto  */
95	ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
96
97	ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
98	ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
99	ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
100	ic->ic_bmiss_max = IEEE80211_BMISS_MAX;
101	callout_init(&ic->ic_swbmiss, CALLOUT_MPSAFE);
102	ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
103	ic->ic_protmode = IEEE80211_PROT_CTSONLY;
104	ic->ic_roaming = IEEE80211_ROAMING_AUTO;
105
106	ic->ic_wme.wme_hipri_switch_hysteresis =
107		AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
108
109	mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF);
110
111	/* protocol state change handler */
112	ic->ic_newstate = ieee80211_newstate;
113
114	/* initialize management frame handlers */
115	ic->ic_recv_mgmt = ieee80211_recv_mgmt;
116	ic->ic_send_mgmt = ieee80211_send_mgmt;
117}
118
119void
120ieee80211_proto_detach(struct ieee80211com *ic)
121{
122
123	/*
124	 * This should not be needed as we detach when reseting
125	 * the state but be conservative here since the
126	 * authenticator may do things like spawn kernel threads.
127	 */
128	if (ic->ic_auth->ia_detach)
129		ic->ic_auth->ia_detach(ic);
130
131	IF_DRAIN(&ic->ic_mgtq);
132	mtx_destroy(&ic->ic_mgtq.ifq_mtx);
133
134	/*
135	 * Detach any ACL'ator.
136	 */
137	if (ic->ic_acl != NULL)
138		ic->ic_acl->iac_detach(ic);
139}
140
141/*
142 * Simple-minded authenticator module support.
143 */
144
145#define	IEEE80211_AUTH_MAX	(IEEE80211_AUTH_WPA+1)
146/* XXX well-known names */
147static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
148	"wlan_internal",	/* IEEE80211_AUTH_NONE */
149	"wlan_internal",	/* IEEE80211_AUTH_OPEN */
150	"wlan_internal",	/* IEEE80211_AUTH_SHARED */
151	"wlan_xauth",		/* IEEE80211_AUTH_8021X	 */
152	"wlan_internal",	/* IEEE80211_AUTH_AUTO */
153	"wlan_xauth",		/* IEEE80211_AUTH_WPA */
154};
155static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
156
157static const struct ieee80211_authenticator auth_internal = {
158	.ia_name		= "wlan_internal",
159	.ia_attach		= NULL,
160	.ia_detach		= NULL,
161	.ia_node_join		= NULL,
162	.ia_node_leave		= NULL,
163};
164
165/*
166 * Setup internal authenticators once; they are never unregistered.
167 */
168static void
169ieee80211_auth_setup(void)
170{
171	ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
172	ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
173	ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
174}
175SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
176
177const struct ieee80211_authenticator *
178ieee80211_authenticator_get(int auth)
179{
180	if (auth >= IEEE80211_AUTH_MAX)
181		return NULL;
182	if (authenticators[auth] == NULL)
183		ieee80211_load_module(auth_modnames[auth]);
184	return authenticators[auth];
185}
186
187void
188ieee80211_authenticator_register(int type,
189	const struct ieee80211_authenticator *auth)
190{
191	if (type >= IEEE80211_AUTH_MAX)
192		return;
193	authenticators[type] = auth;
194}
195
196void
197ieee80211_authenticator_unregister(int type)
198{
199
200	if (type >= IEEE80211_AUTH_MAX)
201		return;
202	authenticators[type] = NULL;
203}
204
205/*
206 * Very simple-minded ACL module support.
207 */
208/* XXX just one for now */
209static	const struct ieee80211_aclator *acl = NULL;
210
211void
212ieee80211_aclator_register(const struct ieee80211_aclator *iac)
213{
214	printf("wlan: %s acl policy registered\n", iac->iac_name);
215	acl = iac;
216}
217
218void
219ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
220{
221	if (acl == iac)
222		acl = NULL;
223	printf("wlan: %s acl policy unregistered\n", iac->iac_name);
224}
225
226const struct ieee80211_aclator *
227ieee80211_aclator_get(const char *name)
228{
229	if (acl == NULL)
230		ieee80211_load_module("wlan_acl");
231	return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
232}
233
234void
235ieee80211_print_essid(const u_int8_t *essid, int len)
236{
237	const u_int8_t *p;
238	int i;
239
240	if (len > IEEE80211_NWID_LEN)
241		len = IEEE80211_NWID_LEN;
242	/* determine printable or not */
243	for (i = 0, p = essid; i < len; i++, p++) {
244		if (*p < ' ' || *p > 0x7e)
245			break;
246	}
247	if (i == len) {
248		printf("\"");
249		for (i = 0, p = essid; i < len; i++, p++)
250			printf("%c", *p);
251		printf("\"");
252	} else {
253		printf("0x");
254		for (i = 0, p = essid; i < len; i++, p++)
255			printf("%02x", *p);
256	}
257}
258
259void
260ieee80211_dump_pkt(const u_int8_t *buf, int len, int rate, int rssi)
261{
262	const struct ieee80211_frame *wh;
263	int i;
264
265	wh = (const struct ieee80211_frame *)buf;
266	switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
267	case IEEE80211_FC1_DIR_NODS:
268		printf("NODS %s", ether_sprintf(wh->i_addr2));
269		printf("->%s", ether_sprintf(wh->i_addr1));
270		printf("(%s)", ether_sprintf(wh->i_addr3));
271		break;
272	case IEEE80211_FC1_DIR_TODS:
273		printf("TODS %s", ether_sprintf(wh->i_addr2));
274		printf("->%s", ether_sprintf(wh->i_addr3));
275		printf("(%s)", ether_sprintf(wh->i_addr1));
276		break;
277	case IEEE80211_FC1_DIR_FROMDS:
278		printf("FRDS %s", ether_sprintf(wh->i_addr3));
279		printf("->%s", ether_sprintf(wh->i_addr1));
280		printf("(%s)", ether_sprintf(wh->i_addr2));
281		break;
282	case IEEE80211_FC1_DIR_DSTODS:
283		printf("DSDS %s", ether_sprintf((const u_int8_t *)&wh[1]));
284		printf("->%s", ether_sprintf(wh->i_addr3));
285		printf("(%s", ether_sprintf(wh->i_addr2));
286		printf("->%s)", ether_sprintf(wh->i_addr1));
287		break;
288	}
289	switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
290	case IEEE80211_FC0_TYPE_DATA:
291		printf(" data");
292		break;
293	case IEEE80211_FC0_TYPE_MGT:
294		printf(" %s", ieee80211_mgt_subtype_name[
295		    (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
296		    >> IEEE80211_FC0_SUBTYPE_SHIFT]);
297		break;
298	default:
299		printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
300		break;
301	}
302	if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
303		int i;
304		printf(" WEP [IV");
305		for (i = 0; i < IEEE80211_WEP_IVLEN; i++)
306			printf(" %.02x", buf[sizeof(*wh)+i]);
307		printf(" KID %u]", buf[sizeof(*wh)+i] >> 6);
308	}
309	if (rate >= 0)
310		printf(" %dM", rate / 2);
311	if (rssi >= 0)
312		printf(" +%d", rssi);
313	printf("\n");
314	if (len > 0) {
315		for (i = 0; i < len; i++) {
316			if ((i & 1) == 0)
317				printf(" ");
318			printf("%02x", buf[i]);
319		}
320		printf("\n");
321	}
322}
323
324int
325ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
326{
327#define	RV(v)	((v) & IEEE80211_RATE_VAL)
328	struct ieee80211com *ic = ni->ni_ic;
329	int i, j, ignore, error;
330	int okrate, badrate, fixedrate;
331	struct ieee80211_rateset *srs, *nrs;
332	u_int8_t r;
333
334	/*
335	 * If the fixed rate check was requested but no
336	 * fixed has been defined then just remove it.
337	 */
338	if ((flags & IEEE80211_F_DOFRATE) &&
339	    ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)
340		flags &= ~IEEE80211_F_DOFRATE;
341	error = 0;
342	okrate = badrate = fixedrate = 0;
343	srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
344	nrs = &ni->ni_rates;
345	for (i = 0; i < nrs->rs_nrates; ) {
346		ignore = 0;
347		if (flags & IEEE80211_F_DOSORT) {
348			/*
349			 * Sort rates.
350			 */
351			for (j = i + 1; j < nrs->rs_nrates; j++) {
352				if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
353					r = nrs->rs_rates[i];
354					nrs->rs_rates[i] = nrs->rs_rates[j];
355					nrs->rs_rates[j] = r;
356				}
357			}
358		}
359		r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
360		badrate = r;
361		if (flags & IEEE80211_F_DOFRATE) {
362			/*
363			 * Check any fixed rate is included.
364			 */
365			if (r == RV(srs->rs_rates[ic->ic_fixed_rate]))
366				fixedrate = r;
367		}
368		if (flags & IEEE80211_F_DONEGO) {
369			/*
370			 * Check against supported rates.
371			 */
372			for (j = 0; j < srs->rs_nrates; j++) {
373				if (r == RV(srs->rs_rates[j])) {
374					/*
375					 * Overwrite with the supported rate
376					 * value so any basic rate bit is set.
377					 * This insures that response we send
378					 * to stations have the necessary basic
379					 * rate bit set.
380					 */
381					nrs->rs_rates[i] = srs->rs_rates[j];
382					break;
383				}
384			}
385			if (j == srs->rs_nrates) {
386				/*
387				 * A rate in the node's rate set is not
388				 * supported.  If this is a basic rate and we
389				 * are operating as an AP then this is an error.
390				 * Otherwise we just discard/ignore the rate.
391				 * Note that this is important for 11b stations
392				 * when they want to associate with an 11g AP.
393				 */
394				if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
395				    (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
396					error++;
397				ignore++;
398			}
399		}
400		if (flags & IEEE80211_F_DODEL) {
401			/*
402			 * Delete unacceptable rates.
403			 */
404			if (ignore) {
405				nrs->rs_nrates--;
406				for (j = i; j < nrs->rs_nrates; j++)
407					nrs->rs_rates[j] = nrs->rs_rates[j + 1];
408				nrs->rs_rates[j] = 0;
409				continue;
410			}
411		}
412		if (!ignore)
413			okrate = nrs->rs_rates[i];
414		i++;
415	}
416	if (okrate == 0 || error != 0 ||
417	    ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
418		return badrate | IEEE80211_RATE_BASIC;
419	else
420		return RV(okrate);
421#undef RV
422}
423
424/*
425 * Reset 11g-related state.
426 */
427void
428ieee80211_reset_erp(struct ieee80211com *ic)
429{
430	ic->ic_flags &= ~IEEE80211_F_USEPROT;
431	ic->ic_nonerpsta = 0;
432	ic->ic_longslotsta = 0;
433	/*
434	 * Short slot time is enabled only when operating in 11g
435	 * and not in an IBSS.  We must also honor whether or not
436	 * the driver is capable of doing it.
437	 */
438	ieee80211_set_shortslottime(ic,
439		ic->ic_curmode == IEEE80211_MODE_11A ||
440		(ic->ic_curmode == IEEE80211_MODE_11G &&
441		ic->ic_opmode == IEEE80211_M_HOSTAP &&
442		(ic->ic_caps & IEEE80211_C_SHSLOT)));
443	/*
444	 * Set short preamble and ERP barker-preamble flags.
445	 */
446	if (ic->ic_curmode == IEEE80211_MODE_11A ||
447	    (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
448		ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
449		ic->ic_flags &= ~IEEE80211_F_USEBARKER;
450	} else {
451		ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
452		ic->ic_flags |= IEEE80211_F_USEBARKER;
453	}
454}
455
456/*
457 * Set the short slot time state and notify the driver.
458 */
459void
460ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
461{
462	if (onoff)
463		ic->ic_flags |= IEEE80211_F_SHSLOT;
464	else
465		ic->ic_flags &= ~IEEE80211_F_SHSLOT;
466	/* notify driver */
467	if (ic->ic_updateslot != NULL)
468		ic->ic_updateslot(ic->ic_ifp);
469}
470
471/*
472 * Check if the specified rate set supports ERP.
473 * NB: the rate set is assumed to be sorted.
474 */
475int
476ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
477{
478#define N(a)	(sizeof(a) / sizeof(a[0]))
479	static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
480	int i, j;
481
482	if (rs->rs_nrates < N(rates))
483		return 0;
484	for (i = 0; i < N(rates); i++) {
485		for (j = 0; j < rs->rs_nrates; j++) {
486			int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
487			if (rates[i] == r)
488				goto next;
489			if (r > rates[i])
490				return 0;
491		}
492		return 0;
493	next:
494		;
495	}
496	return 1;
497#undef N
498}
499
500/*
501 * Mark the basic rates for the 11g rate table based on the
502 * operating mode.  For real 11g we mark all the 11b rates
503 * and 6, 12, and 24 OFDM.  For 11b compatibility we mark only
504 * 11b rates.  There's also a pseudo 11a-mode used to mark only
505 * the basic OFDM rates.
506 */
507void
508ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
509{
510	static const struct ieee80211_rateset basic[] = {
511	    { 0 },			/* IEEE80211_MODE_AUTO */
512	    { 3, { 12, 24, 48 } },	/* IEEE80211_MODE_11A */
513	    { 2, { 2, 4 } },		/* IEEE80211_MODE_11B */
514	    { 4, { 2, 4, 11, 22 } },	/* IEEE80211_MODE_11G (mixed b/g) */
515	    { 0 },			/* IEEE80211_MODE_FH */
516					/* IEEE80211_MODE_PUREG (not yet) */
517	    { 7, { 2, 4, 11, 22, 12, 24, 48 } },
518	};
519	int i, j;
520
521	for (i = 0; i < rs->rs_nrates; i++) {
522		rs->rs_rates[i] &= IEEE80211_RATE_VAL;
523		for (j = 0; j < basic[mode].rs_nrates; j++)
524			if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
525				rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
526				break;
527			}
528	}
529}
530
531/*
532 * WME protocol support.  The following parameters come from the spec.
533 */
534typedef struct phyParamType {
535	u_int8_t aifsn;
536	u_int8_t logcwmin;
537	u_int8_t logcwmax;
538	u_int16_t txopLimit;
539	u_int8_t acm;
540} paramType;
541
542static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
543	{ 3, 4, 6 },		/* IEEE80211_MODE_AUTO */
544	{ 3, 4, 6 },		/* IEEE80211_MODE_11A */
545	{ 3, 5, 7 },		/* IEEE80211_MODE_11B */
546	{ 3, 4, 6 },		/* IEEE80211_MODE_11G */
547	{ 3, 5, 7 },		/* IEEE80211_MODE_FH */
548	{ 2, 3, 5 },		/* IEEE80211_MODE_TURBO_A */
549	{ 2, 3, 5 },		/* IEEE80211_MODE_TURBO_G */
550};
551static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
552	{ 7, 4, 10 },		/* IEEE80211_MODE_AUTO */
553	{ 7, 4, 10 },		/* IEEE80211_MODE_11A */
554	{ 7, 5, 10 },		/* IEEE80211_MODE_11B */
555	{ 7, 4, 10 },		/* IEEE80211_MODE_11G */
556	{ 7, 5, 10 },		/* IEEE80211_MODE_FH */
557	{ 7, 3, 10 },		/* IEEE80211_MODE_TURBO_A */
558	{ 7, 3, 10 },		/* IEEE80211_MODE_TURBO_G */
559};
560static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
561	{ 1, 3, 4,  94 },	/* IEEE80211_MODE_AUTO */
562	{ 1, 3, 4,  94 },	/* IEEE80211_MODE_11A */
563	{ 1, 4, 5, 188 },	/* IEEE80211_MODE_11B */
564	{ 1, 3, 4,  94 },	/* IEEE80211_MODE_11G */
565	{ 1, 4, 5, 188 },	/* IEEE80211_MODE_FH */
566	{ 1, 2, 3,  94 },	/* IEEE80211_MODE_TURBO_A */
567	{ 1, 2, 3,  94 },	/* IEEE80211_MODE_TURBO_G */
568};
569static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
570	{ 1, 2, 3,  47 },	/* IEEE80211_MODE_AUTO */
571	{ 1, 2, 3,  47 },	/* IEEE80211_MODE_11A */
572	{ 1, 3, 4, 102 },	/* IEEE80211_MODE_11B */
573	{ 1, 2, 3,  47 },	/* IEEE80211_MODE_11G */
574	{ 1, 3, 4, 102 },	/* IEEE80211_MODE_FH */
575	{ 1, 2, 2,  47 },	/* IEEE80211_MODE_TURBO_A */
576	{ 1, 2, 2,  47 },	/* IEEE80211_MODE_TURBO_G */
577};
578
579static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
580	{ 3, 4, 10 },		/* IEEE80211_MODE_AUTO */
581	{ 3, 4, 10 },		/* IEEE80211_MODE_11A */
582	{ 3, 5, 10 },		/* IEEE80211_MODE_11B */
583	{ 3, 4, 10 },		/* IEEE80211_MODE_11G */
584	{ 3, 5, 10 },		/* IEEE80211_MODE_FH */
585	{ 2, 3, 10 },		/* IEEE80211_MODE_TURBO_A */
586	{ 2, 3, 10 },		/* IEEE80211_MODE_TURBO_G */
587};
588static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
589	{ 2, 3, 4,  94 },	/* IEEE80211_MODE_AUTO */
590	{ 2, 3, 4,  94 },	/* IEEE80211_MODE_11A */
591	{ 2, 4, 5, 188 },	/* IEEE80211_MODE_11B */
592	{ 2, 3, 4,  94 },	/* IEEE80211_MODE_11G */
593	{ 2, 4, 5, 188 },	/* IEEE80211_MODE_FH */
594	{ 2, 2, 3,  94 },	/* IEEE80211_MODE_TURBO_A */
595	{ 2, 2, 3,  94 },	/* IEEE80211_MODE_TURBO_G */
596};
597static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
598	{ 2, 2, 3,  47 },	/* IEEE80211_MODE_AUTO */
599	{ 2, 2, 3,  47 },	/* IEEE80211_MODE_11A */
600	{ 2, 3, 4, 102 },	/* IEEE80211_MODE_11B */
601	{ 2, 2, 3,  47 },	/* IEEE80211_MODE_11G */
602	{ 2, 3, 4, 102 },	/* IEEE80211_MODE_FH */
603	{ 1, 2, 2,  47 },	/* IEEE80211_MODE_TURBO_A */
604	{ 1, 2, 2,  47 },	/* IEEE80211_MODE_TURBO_G */
605};
606
607void
608ieee80211_wme_initparams(struct ieee80211com *ic)
609{
610	struct ieee80211_wme_state *wme = &ic->ic_wme;
611	const paramType *pPhyParam, *pBssPhyParam;
612	struct wmeParams *wmep;
613	int i;
614
615	if ((ic->ic_caps & IEEE80211_C_WME) == 0)
616		return;
617
618	for (i = 0; i < WME_NUM_AC; i++) {
619		switch (i) {
620		case WME_AC_BK:
621			pPhyParam = &phyParamForAC_BK[ic->ic_curmode];
622			pBssPhyParam = &phyParamForAC_BK[ic->ic_curmode];
623			break;
624		case WME_AC_VI:
625			pPhyParam = &phyParamForAC_VI[ic->ic_curmode];
626			pBssPhyParam = &bssPhyParamForAC_VI[ic->ic_curmode];
627			break;
628		case WME_AC_VO:
629			pPhyParam = &phyParamForAC_VO[ic->ic_curmode];
630			pBssPhyParam = &bssPhyParamForAC_VO[ic->ic_curmode];
631			break;
632		case WME_AC_BE:
633		default:
634			pPhyParam = &phyParamForAC_BE[ic->ic_curmode];
635			pBssPhyParam = &bssPhyParamForAC_BE[ic->ic_curmode];
636			break;
637		}
638
639		wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
640		if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
641			wmep->wmep_acm = pPhyParam->acm;
642			wmep->wmep_aifsn = pPhyParam->aifsn;
643			wmep->wmep_logcwmin = pPhyParam->logcwmin;
644			wmep->wmep_logcwmax = pPhyParam->logcwmax;
645			wmep->wmep_txopLimit = pPhyParam->txopLimit;
646		} else {
647			wmep->wmep_acm = pBssPhyParam->acm;
648			wmep->wmep_aifsn = pBssPhyParam->aifsn;
649			wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
650			wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
651			wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
652
653		}
654		IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
655			"%s: %s chan [acm %u aifsn %u log2(cwmin) %u "
656			"log2(cwmax) %u txpoLimit %u]\n", __func__
657			, ieee80211_wme_acnames[i]
658			, wmep->wmep_acm
659			, wmep->wmep_aifsn
660			, wmep->wmep_logcwmin
661			, wmep->wmep_logcwmax
662			, wmep->wmep_txopLimit
663		);
664
665		wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
666		wmep->wmep_acm = pBssPhyParam->acm;
667		wmep->wmep_aifsn = pBssPhyParam->aifsn;
668		wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
669		wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
670		wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
671		IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
672			"%s: %s  bss [acm %u aifsn %u log2(cwmin) %u "
673			"log2(cwmax) %u txpoLimit %u]\n", __func__
674			, ieee80211_wme_acnames[i]
675			, wmep->wmep_acm
676			, wmep->wmep_aifsn
677			, wmep->wmep_logcwmin
678			, wmep->wmep_logcwmax
679			, wmep->wmep_txopLimit
680		);
681	}
682	/* NB: check ic_bss to avoid NULL deref on initial attach */
683	if (ic->ic_bss != NULL) {
684		/*
685		 * Calculate agressive mode switching threshold based
686		 * on beacon interval.  This doesn't need locking since
687		 * we're only called before entering the RUN state at
688		 * which point we start sending beacon frames.
689		 */
690		wme->wme_hipri_switch_thresh =
691			(HIGH_PRI_SWITCH_THRESH * ic->ic_bss->ni_intval) / 100;
692		ieee80211_wme_updateparams(ic);
693	}
694}
695
696/*
697 * Update WME parameters for ourself and the BSS.
698 */
699void
700ieee80211_wme_updateparams_locked(struct ieee80211com *ic)
701{
702	static const paramType phyParam[IEEE80211_MODE_MAX] = {
703		{ 2, 4, 10, 64 },	/* IEEE80211_MODE_AUTO */
704		{ 2, 4, 10, 64 },	/* IEEE80211_MODE_11A */
705		{ 2, 5, 10, 64 },	/* IEEE80211_MODE_11B */
706		{ 2, 4, 10, 64 },	/* IEEE80211_MODE_11G */
707		{ 2, 5, 10, 64 },	/* IEEE80211_MODE_FH */
708		{ 1, 3, 10, 64 },	/* IEEE80211_MODE_TURBO_A */
709		{ 1, 3, 10, 64 },	/* IEEE80211_MODE_TURBO_G */
710	};
711	struct ieee80211_wme_state *wme = &ic->ic_wme;
712	const struct wmeParams *wmep;
713	struct wmeParams *chanp, *bssp;
714	int i;
715
716       	/* set up the channel access parameters for the physical device */
717	for (i = 0; i < WME_NUM_AC; i++) {
718		chanp = &wme->wme_chanParams.cap_wmeParams[i];
719		wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
720		chanp->wmep_aifsn = wmep->wmep_aifsn;
721		chanp->wmep_logcwmin = wmep->wmep_logcwmin;
722		chanp->wmep_logcwmax = wmep->wmep_logcwmax;
723		chanp->wmep_txopLimit = wmep->wmep_txopLimit;
724
725		chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
726		wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
727		chanp->wmep_aifsn = wmep->wmep_aifsn;
728		chanp->wmep_logcwmin = wmep->wmep_logcwmin;
729		chanp->wmep_logcwmax = wmep->wmep_logcwmax;
730		chanp->wmep_txopLimit = wmep->wmep_txopLimit;
731	}
732
733	/*
734	 * This implements agressive mode as found in certain
735	 * vendors' AP's.  When there is significant high
736	 * priority (VI/VO) traffic in the BSS throttle back BE
737	 * traffic by using conservative parameters.  Otherwise
738	 * BE uses agressive params to optimize performance of
739	 * legacy/non-QoS traffic.
740	 */
741        if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
742	     (wme->wme_flags & WME_F_AGGRMODE) != 0) ||
743	    (ic->ic_opmode == IEEE80211_M_STA &&
744	     (ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
745	    (ic->ic_flags & IEEE80211_F_WME) == 0) {
746		chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
747		bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
748
749		chanp->wmep_aifsn = bssp->wmep_aifsn =
750			phyParam[ic->ic_curmode].aifsn;
751		chanp->wmep_logcwmin = bssp->wmep_logcwmin =
752			phyParam[ic->ic_curmode].logcwmin;
753		chanp->wmep_logcwmax = bssp->wmep_logcwmax =
754			phyParam[ic->ic_curmode].logcwmax;
755		chanp->wmep_txopLimit = bssp->wmep_txopLimit =
756			(ic->ic_flags & IEEE80211_F_BURST) ?
757				phyParam[ic->ic_curmode].txopLimit : 0;
758		IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
759			"%s: %s [acm %u aifsn %u log2(cwmin) %u "
760			"log2(cwmax) %u txpoLimit %u]\n", __func__
761			, ieee80211_wme_acnames[WME_AC_BE]
762			, chanp->wmep_acm
763			, chanp->wmep_aifsn
764			, chanp->wmep_logcwmin
765			, chanp->wmep_logcwmax
766			, chanp->wmep_txopLimit
767		);
768	}
769
770	if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
771	    ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
772        	static const u_int8_t logCwMin[IEEE80211_MODE_MAX] = {
773              		3,	/* IEEE80211_MODE_AUTO */
774              		3,	/* IEEE80211_MODE_11A */
775              		4,	/* IEEE80211_MODE_11B */
776              		3,	/* IEEE80211_MODE_11G */
777              		4,	/* IEEE80211_MODE_FH */
778              		3,	/* IEEE80211_MODE_TURBO_A */
779              		3,	/* IEEE80211_MODE_TURBO_G */
780		};
781		chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
782		bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
783
784		chanp->wmep_logcwmin = bssp->wmep_logcwmin =
785			logCwMin[ic->ic_curmode];
786		IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
787			"%s: %s log2(cwmin) %u\n", __func__
788			, ieee80211_wme_acnames[WME_AC_BE]
789			, chanp->wmep_logcwmin
790		);
791    	}
792	if (ic->ic_opmode == IEEE80211_M_HOSTAP) {	/* XXX ibss? */
793		/*
794		 * Arrange for a beacon update and bump the parameter
795		 * set number so associated stations load the new values.
796		 */
797		wme->wme_bssChanParams.cap_info =
798			(wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
799		ic->ic_flags |= IEEE80211_F_WMEUPDATE;
800	}
801
802	wme->wme_update(ic);
803
804	IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
805		"%s: WME params updated, cap_info 0x%x\n", __func__,
806		ic->ic_opmode == IEEE80211_M_STA ?
807			wme->wme_wmeChanParams.cap_info :
808			wme->wme_bssChanParams.cap_info);
809}
810
811void
812ieee80211_wme_updateparams(struct ieee80211com *ic)
813{
814
815	if (ic->ic_caps & IEEE80211_C_WME) {
816		IEEE80211_BEACON_LOCK(ic);
817		ieee80211_wme_updateparams_locked(ic);
818		IEEE80211_BEACON_UNLOCK(ic);
819	}
820}
821
822void
823ieee80211_beacon_miss(struct ieee80211com *ic)
824{
825
826	if (ic->ic_flags & IEEE80211_F_SCAN) {
827		/* XXX check ic_curchan != ic_bsschan? */
828		return;
829	}
830	IEEE80211_DPRINTF(ic,
831		IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
832		"%s\n", "beacon miss");
833
834	/*
835	 * Our handling is only meaningful for stations that are
836	 * associated; any other conditions else will be handled
837	 * through different means (e.g. the tx timeout on mgt frames).
838	 */
839	if (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN)
840		return;
841
842	if (++ic->ic_bmiss_count < ic->ic_bmiss_max) {
843		/*
844		 * Send a directed probe req before falling back to a scan;
845		 * if we receive a response ic_bmiss_count will be reset.
846		 * Some cards mistakenly report beacon miss so this avoids
847		 * the expensive scan if the ap is still there.
848		 */
849		ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr,
850			ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid,
851			ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen,
852			ic->ic_opt_ie, ic->ic_opt_ie_len);
853		return;
854	}
855	ic->ic_bmiss_count = 0;
856	ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
857}
858
859/*
860 * Software beacon miss handling.  Check if any beacons
861 * were received in the last period.  If not post a
862 * beacon miss; otherwise reset the counter.
863 */
864static void
865ieee80211_swbmiss(void *arg)
866{
867	struct ieee80211com *ic = arg;
868
869	if (ic->ic_swbmiss_count == 0) {
870		ieee80211_beacon_miss(ic);
871		if (ic->ic_bmiss_count == 0)	/* don't re-arm timer */
872			return;
873	} else
874		ic->ic_swbmiss_count = 0;
875	callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
876		ieee80211_swbmiss, ic);
877}
878
879static void
880sta_disassoc(void *arg, struct ieee80211_node *ni)
881{
882	struct ieee80211com *ic = arg;
883
884	if (ni->ni_associd != 0) {
885		IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
886			IEEE80211_REASON_ASSOC_LEAVE);
887		ieee80211_node_leave(ic, ni);
888	}
889}
890
891static void
892sta_deauth(void *arg, struct ieee80211_node *ni)
893{
894	struct ieee80211com *ic = arg;
895
896	IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
897		IEEE80211_REASON_ASSOC_LEAVE);
898}
899
900static int
901ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
902{
903	struct ifnet *ifp = ic->ic_ifp;
904	struct ieee80211_node *ni;
905	enum ieee80211_state ostate;
906
907	ostate = ic->ic_state;
908	IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
909		ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
910	ic->ic_state = nstate;			/* state transition */
911	ni = ic->ic_bss;			/* NB: no reference held */
912	if (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)
913		callout_stop(&ic->ic_swbmiss);
914	switch (nstate) {
915	case IEEE80211_S_INIT:
916		switch (ostate) {
917		case IEEE80211_S_INIT:
918			break;
919		case IEEE80211_S_RUN:
920			switch (ic->ic_opmode) {
921			case IEEE80211_M_STA:
922				IEEE80211_SEND_MGMT(ic, ni,
923				    IEEE80211_FC0_SUBTYPE_DISASSOC,
924				    IEEE80211_REASON_ASSOC_LEAVE);
925				ieee80211_sta_leave(ic, ni);
926				break;
927			case IEEE80211_M_HOSTAP:
928				ieee80211_iterate_nodes(&ic->ic_sta,
929					sta_disassoc, ic);
930				break;
931			default:
932				break;
933			}
934			goto reset;
935		case IEEE80211_S_ASSOC:
936			switch (ic->ic_opmode) {
937			case IEEE80211_M_STA:
938				IEEE80211_SEND_MGMT(ic, ni,
939				    IEEE80211_FC0_SUBTYPE_DEAUTH,
940				    IEEE80211_REASON_AUTH_LEAVE);
941				break;
942			case IEEE80211_M_HOSTAP:
943				ieee80211_iterate_nodes(&ic->ic_sta,
944					sta_deauth, ic);
945				break;
946			default:
947				break;
948			}
949			goto reset;
950		case IEEE80211_S_SCAN:
951			ieee80211_cancel_scan(ic);
952			goto reset;
953		case IEEE80211_S_AUTH:
954		reset:
955			ic->ic_mgt_timer = 0;
956			IF_DRAIN(&ic->ic_mgtq);
957			ieee80211_reset_bss(ic);
958			break;
959		}
960		if (ic->ic_auth->ia_detach != NULL)
961			ic->ic_auth->ia_detach(ic);
962		break;
963	case IEEE80211_S_SCAN:
964		switch (ostate) {
965		case IEEE80211_S_INIT:
966			if ((ic->ic_opmode == IEEE80211_M_HOSTAP ||
967			     ic->ic_opmode == IEEE80211_M_IBSS ||
968			     ic->ic_opmode == IEEE80211_M_AHDEMO) &&
969			    ic->ic_des_chan != IEEE80211_CHAN_ANYC) {
970				/*
971				 * AP operation and we already have a channel;
972				 * bypass the scan and startup immediately.
973				 */
974				ieee80211_create_ibss(ic, ic->ic_des_chan);
975			} else {
976				ieee80211_begin_scan(ic, arg);
977			}
978			break;
979		case IEEE80211_S_SCAN:
980			/*
981			 * Scan next. If doing an active scan probe
982			 * for the requested ap (if any).
983			 */
984			if (ic->ic_flags & IEEE80211_F_ASCAN)
985				ieee80211_probe_curchan(ic, 0);
986			break;
987		case IEEE80211_S_RUN:
988			/* beacon miss */
989			IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE,
990				"no recent beacons from %s; rescanning\n",
991				ether_sprintf(ic->ic_bss->ni_bssid));
992			ieee80211_sta_leave(ic, ni);
993			ic->ic_flags &= ~IEEE80211_F_SIBSS;	/* XXX */
994			/* FALLTHRU */
995		case IEEE80211_S_AUTH:
996		case IEEE80211_S_ASSOC:
997			/* timeout restart scan */
998			ni = ieee80211_find_node(&ic->ic_scan,
999				ic->ic_bss->ni_macaddr);
1000			if (ni != NULL) {
1001				ni->ni_fails++;
1002				ieee80211_unref_node(&ni);
1003			}
1004			if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1005				ieee80211_begin_scan(ic, arg);
1006			break;
1007		}
1008		break;
1009	case IEEE80211_S_AUTH:
1010		switch (ostate) {
1011		case IEEE80211_S_INIT:
1012		case IEEE80211_S_SCAN:
1013			IEEE80211_SEND_MGMT(ic, ni,
1014			    IEEE80211_FC0_SUBTYPE_AUTH, 1);
1015			break;
1016		case IEEE80211_S_AUTH:
1017		case IEEE80211_S_ASSOC:
1018			switch (arg) {
1019			case IEEE80211_FC0_SUBTYPE_AUTH:
1020				/* ??? */
1021				IEEE80211_SEND_MGMT(ic, ni,
1022				    IEEE80211_FC0_SUBTYPE_AUTH, 2);
1023				break;
1024			case IEEE80211_FC0_SUBTYPE_DEAUTH:
1025				/* ignore and retry scan on timeout */
1026				break;
1027			}
1028			break;
1029		case IEEE80211_S_RUN:
1030			switch (arg) {
1031			case IEEE80211_FC0_SUBTYPE_AUTH:
1032				IEEE80211_SEND_MGMT(ic, ni,
1033				    IEEE80211_FC0_SUBTYPE_AUTH, 2);
1034				ic->ic_state = ostate;	/* stay RUN */
1035				break;
1036			case IEEE80211_FC0_SUBTYPE_DEAUTH:
1037				ieee80211_sta_leave(ic, ni);
1038				if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1039					/* try to reauth */
1040					IEEE80211_SEND_MGMT(ic, ni,
1041					    IEEE80211_FC0_SUBTYPE_AUTH, 1);
1042				}
1043				break;
1044			}
1045			break;
1046		}
1047		break;
1048	case IEEE80211_S_ASSOC:
1049		switch (ostate) {
1050		case IEEE80211_S_INIT:
1051		case IEEE80211_S_SCAN:
1052		case IEEE80211_S_ASSOC:
1053			IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1054				"%s: invalid transition\n", __func__);
1055			break;
1056		case IEEE80211_S_AUTH:
1057			IEEE80211_SEND_MGMT(ic, ni,
1058			    IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
1059			break;
1060		case IEEE80211_S_RUN:
1061			ieee80211_sta_leave(ic, ni);
1062			if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1063				IEEE80211_SEND_MGMT(ic, ni,
1064				    IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
1065			}
1066			break;
1067		}
1068		break;
1069	case IEEE80211_S_RUN:
1070		if (ic->ic_flags & IEEE80211_F_WPA) {
1071			/* XXX validate prerequisites */
1072		}
1073		switch (ostate) {
1074		case IEEE80211_S_INIT:
1075			if (ic->ic_opmode == IEEE80211_M_MONITOR)
1076				break;
1077			/* fall thru... */
1078		case IEEE80211_S_AUTH:
1079			IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1080				"%s: invalid transition\n", __func__);
1081			/* fall thru... */
1082		case IEEE80211_S_RUN:
1083			break;
1084		case IEEE80211_S_SCAN:		/* adhoc/hostap mode */
1085		case IEEE80211_S_ASSOC:		/* infra mode */
1086			KASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates,
1087				("%s: bogus xmit rate %u setup\n", __func__,
1088					ni->ni_txrate));
1089#ifdef IEEE80211_DEBUG
1090			if (ieee80211_msg_debug(ic)) {
1091				if (ic->ic_opmode == IEEE80211_M_STA)
1092					if_printf(ifp, "associated ");
1093				else
1094					if_printf(ifp, "synchronized ");
1095				printf("with %s ssid ",
1096				    ether_sprintf(ni->ni_bssid));
1097				ieee80211_print_essid(ic->ic_bss->ni_essid,
1098				    ni->ni_esslen);
1099				printf(" channel %d start %uMb\n",
1100					ieee80211_chan2ieee(ic, ic->ic_curchan),
1101					IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
1102			}
1103#endif
1104			ic->ic_mgt_timer = 0;
1105			if (ic->ic_opmode == IEEE80211_M_STA)
1106				ieee80211_notify_node_join(ic, ni,
1107					arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
1108			if_start(ifp);		/* XXX not authorized yet */
1109			break;
1110		}
1111		if (ostate != IEEE80211_S_RUN &&
1112		    ic->ic_opmode == IEEE80211_M_STA &&
1113		    (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)) {
1114			/*
1115			 * Start s/w beacon miss timer for devices w/o
1116			 * hardware support.  We fudge a bit here since
1117			 * we're doing this in software.
1118			 */
1119			ic->ic_swbmiss_period = IEEE80211_TU_TO_TICKS(
1120				2 * ic->ic_bmissthreshold * ni->ni_intval);
1121			ic->ic_swbmiss_count = 0;
1122			callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
1123				ieee80211_swbmiss, ic);
1124		}
1125		/*
1126		 * Start/stop the authenticator when operating as an
1127		 * AP.  We delay until here to allow configuration to
1128		 * happen out of order.
1129		 */
1130		if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
1131		    ic->ic_auth->ia_attach != NULL) {
1132			/* XXX check failure */
1133			ic->ic_auth->ia_attach(ic);
1134		} else if (ic->ic_auth->ia_detach != NULL) {
1135			ic->ic_auth->ia_detach(ic);
1136		}
1137		/*
1138		 * When 802.1x is not in use mark the port authorized
1139		 * at this point so traffic can flow.
1140		 */
1141		if (ni->ni_authmode != IEEE80211_AUTH_8021X)
1142			ieee80211_node_authorize(ni);
1143		/*
1144		 * Enable inactivity processing.
1145		 * XXX
1146		 */
1147		ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
1148		ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
1149		break;
1150	}
1151	return 0;
1152}
1153