Sync our ieee80211*.9 manual pages with the recent upgrade.
[dragonfly.git] / sys / netproto / 802_11 / wlan / ieee80211_proto.c
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  * $FreeBSD: src/sys/net80211/ieee80211_proto.c,v 1.17.2.9 2006/03/13 03:10:31 sam Exp $
33  * $DragonFly: src/sys/netproto/802_11/wlan/ieee80211_proto.c,v 1.2 2006/05/18 13:51:46 sephe Exp $
34  */
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 #include <sys/serialize.h>
46  
47 #include <sys/socket.h>
48
49 #include <net/if.h>
50 #include <net/if_arp.h>
51 #include <net/if_media.h>
52 #include <net/ethernet.h>               /* XXX for ether_sprintf */
53
54 #include <netproto/802_11/ieee80211_var.h>
55
56 /* XXX tunables */
57 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS       3       /* pkts / 100ms */
58 #define HIGH_PRI_SWITCH_THRESH                  10      /* pkts / 100ms */
59
60 #define IEEE80211_RATE2MBS(r)   (((r) & IEEE80211_RATE_VAL) / 2)
61
62 const char *ieee80211_mgt_subtype_name[] = {
63         "assoc_req",    "assoc_resp",   "reassoc_req",  "reassoc_resp",
64         "probe_req",    "probe_resp",   "reserved#6",   "reserved#7",
65         "beacon",       "atim",         "disassoc",     "auth",
66         "deauth",       "reserved#13",  "reserved#14",  "reserved#15"
67 };
68 const char *ieee80211_ctl_subtype_name[] = {
69         "reserved#0",   "reserved#1",   "reserved#2",   "reserved#3",
70         "reserved#3",   "reserved#5",   "reserved#6",   "reserved#7",
71         "reserved#8",   "reserved#9",   "ps_poll",      "rts",
72         "cts",          "ack",          "cf_end",       "cf_end_ack"
73 };
74 const char *ieee80211_state_name[IEEE80211_S_MAX] = {
75         "INIT",         /* IEEE80211_S_INIT */
76         "SCAN",         /* IEEE80211_S_SCAN */
77         "AUTH",         /* IEEE80211_S_AUTH */
78         "ASSOC",        /* IEEE80211_S_ASSOC */
79         "RUN"           /* IEEE80211_S_RUN */
80 };
81 const char *ieee80211_wme_acnames[] = {
82         "WME_AC_BE",
83         "WME_AC_BK",
84         "WME_AC_VI",
85         "WME_AC_VO",
86         "WME_UPSD",
87 };
88
89 static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
90
91 void
92 ieee80211_proto_attach(struct ieee80211com *ic)
93 {
94         struct ifnet *ifp = ic->ic_ifp;
95
96         /* XXX room for crypto  */
97         ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
98
99         ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
100         ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
101         ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
102         ic->ic_bmiss_max = IEEE80211_BMISS_MAX;
103         callout_init(&ic->ic_swbmiss);
104         ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
105         ic->ic_protmode = IEEE80211_PROT_CTSONLY;
106         ic->ic_roaming = IEEE80211_ROAMING_AUTO;
107
108         ic->ic_wme.wme_hipri_switch_hysteresis =
109                 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
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
119 void
120 ieee80211_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
133         /*
134          * Detach any ACL'ator.
135          */
136         if (ic->ic_acl != NULL)
137                 ic->ic_acl->iac_detach(ic);
138 }
139
140 /*
141  * Simple-minded authenticator module support.
142  */
143
144 #define IEEE80211_AUTH_MAX      (IEEE80211_AUTH_WPA+1)
145 /* XXX well-known names */
146 static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
147         "wlan_internal",        /* IEEE80211_AUTH_NONE */
148         "wlan_internal",        /* IEEE80211_AUTH_OPEN */
149         "wlan_internal",        /* IEEE80211_AUTH_SHARED */
150         "wlan_xauth",           /* IEEE80211_AUTH_8021X  */
151         "wlan_internal",        /* IEEE80211_AUTH_AUTO */
152         "wlan_xauth",           /* IEEE80211_AUTH_WPA */
153 };
154 static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
155
156 static const struct ieee80211_authenticator auth_internal = {
157         .ia_name                = "wlan_internal",
158         .ia_attach              = NULL,
159         .ia_detach              = NULL,
160         .ia_node_join           = NULL,
161         .ia_node_leave          = NULL,
162 };
163
164 /*
165  * Setup internal authenticators once; they are never unregistered.
166  */
167 static void
168 ieee80211_auth_setup(void)
169 {
170         ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
171         ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
172         ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
173 }
174 SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
175
176 const struct ieee80211_authenticator *
177 ieee80211_authenticator_get(int auth)
178 {
179         if (auth >= IEEE80211_AUTH_MAX)
180                 return NULL;
181         if (authenticators[auth] == NULL)
182                 ieee80211_load_module(auth_modnames[auth]);
183         return authenticators[auth];
184 }
185
186 void
187 ieee80211_authenticator_register(int type,
188         const struct ieee80211_authenticator *auth)
189 {
190         if (type >= IEEE80211_AUTH_MAX)
191                 return;
192         authenticators[type] = auth;
193 }
194
195 void
196 ieee80211_authenticator_unregister(int type)
197 {
198
199         if (type >= IEEE80211_AUTH_MAX)
200                 return;
201         authenticators[type] = NULL;
202 }
203
204 /*
205  * Very simple-minded ACL module support.
206  */
207 /* XXX just one for now */
208 static  const struct ieee80211_aclator *acl = NULL;
209
210 void
211 ieee80211_aclator_register(const struct ieee80211_aclator *iac)
212 {
213         printf("wlan: %s acl policy registered\n", iac->iac_name);
214         acl = iac;
215 }
216
217 void
218 ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
219 {
220         if (acl == iac)
221                 acl = NULL;
222         printf("wlan: %s acl policy unregistered\n", iac->iac_name);
223 }
224
225 const struct ieee80211_aclator *
226 ieee80211_aclator_get(const char *name)
227 {
228         if (acl == NULL)
229                 ieee80211_load_module("wlan_acl");
230         return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
231 }
232
233 void
234 ieee80211_print_essid(const uint8_t *essid, int len)
235 {
236         const uint8_t *p; 
237         int i;
238
239         if (len > IEEE80211_NWID_LEN)
240                 len = IEEE80211_NWID_LEN;
241         /* determine printable or not */
242         for (i = 0, p = essid; i < len; i++, p++) {
243                 if (*p < ' ' || *p > 0x7e)
244                         break;
245         }
246         if (i == len) {
247                 printf("\"");
248                 for (i = 0, p = essid; i < len; i++, p++)
249                         printf("%c", *p);
250                 printf("\"");
251         } else {
252                 printf("0x");
253                 for (i = 0, p = essid; i < len; i++, p++)
254                         printf("%02x", *p);
255         }
256 }
257
258 void
259 ieee80211_dump_pkt(const uint8_t *buf, int len, int rate, int rssi)
260 {
261         const struct ieee80211_frame *wh;
262         int i;
263
264         wh = (const struct ieee80211_frame *)buf;
265         switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
266         case IEEE80211_FC1_DIR_NODS:
267                 printf("NODS %6D", wh->i_addr2, ":");
268                 printf("->%6D", wh->i_addr1, ":");
269                 printf("(%6D)", wh->i_addr3, ":");
270                 break;
271         case IEEE80211_FC1_DIR_TODS:
272                 printf("TODS %6D", wh->i_addr2, ":");
273                 printf("->%6D", wh->i_addr3, ":");
274                 printf("(%6D)", wh->i_addr1, ":");
275                 break;
276         case IEEE80211_FC1_DIR_FROMDS:
277                 printf("FRDS %6D", wh->i_addr3, ":");
278                 printf("->%6D", wh->i_addr1, ":");
279                 printf("(%6D)", wh->i_addr2, ":");
280                 break;
281         case IEEE80211_FC1_DIR_DSTODS:
282                 printf("DSDS %6D", (const uint8_t *)&wh[1], ":");
283                 printf("->%6D", wh->i_addr3, ":");
284                 printf("(%6D", wh->i_addr2, ":");
285                 printf("->%6D)", wh->i_addr1, ":");
286                 break;
287         }
288         switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
289         case IEEE80211_FC0_TYPE_DATA:
290                 printf(" data");
291                 break;
292         case IEEE80211_FC0_TYPE_MGT:
293                 printf(" %s", ieee80211_mgt_subtype_name[
294                     (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
295                     >> IEEE80211_FC0_SUBTYPE_SHIFT]);
296                 break;
297         default:
298                 printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
299                 break;
300         }
301         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
302                 int i;
303                 printf(" WEP [IV");
304                 for (i = 0; i < IEEE80211_WEP_IVLEN; i++)
305                         printf(" %.02x", buf[sizeof(*wh)+i]);
306                 printf(" KID %u]", buf[sizeof(*wh)+i] >> 6);
307         }
308         if (rate >= 0)
309                 printf(" %dM", rate / 2);
310         if (rssi >= 0)
311                 printf(" +%d", rssi);
312         printf("\n");
313         if (len > 0) {
314                 for (i = 0; i < len; i++) {
315                         if ((i & 1) == 0)
316                                 printf(" ");
317                         printf("%02x", buf[i]);
318                 }
319                 printf("\n");
320         }
321 }
322
323 int
324 ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
325 {
326 #define RV(v)   ((v) & IEEE80211_RATE_VAL)
327         struct ieee80211com *ic = ni->ni_ic;
328         int i, j, ignore, error;
329         int okrate, badrate, fixedrate;
330         struct ieee80211_rateset *srs, *nrs;
331         uint8_t r;
332
333         /*
334          * If the fixed rate check was requested but no
335          * fixed has been defined then just remove it.
336          */
337         if ((flags & IEEE80211_F_DOFRATE) &&
338             ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)
339                 flags &= ~IEEE80211_F_DOFRATE;
340         error = 0;
341         okrate = badrate = fixedrate = 0;
342         srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
343         nrs = &ni->ni_rates;
344         for (i = 0; i < nrs->rs_nrates; ) {
345                 ignore = 0;
346                 if (flags & IEEE80211_F_DOSORT) {
347                         /*
348                          * Sort rates.
349                          */
350                         for (j = i + 1; j < nrs->rs_nrates; j++) {
351                                 if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
352                                         r = nrs->rs_rates[i];
353                                         nrs->rs_rates[i] = nrs->rs_rates[j];
354                                         nrs->rs_rates[j] = r;
355                                 }
356                         }
357                 }
358                 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
359                 badrate = r;
360                 if (flags & IEEE80211_F_DOFRATE) {
361                         /*
362                          * Check any fixed rate is included. 
363                          */
364                         if (r == RV(srs->rs_rates[ic->ic_fixed_rate]))
365                                 fixedrate = r;
366                 }
367                 if (flags & IEEE80211_F_DONEGO) {
368                         /*
369                          * Check against supported rates.
370                          */
371                         for (j = 0; j < srs->rs_nrates; j++) {
372                                 if (r == RV(srs->rs_rates[j])) {
373                                         /*
374                                          * Overwrite with the supported rate
375                                          * value so any basic rate bit is set.
376                                          * This insures that response we send
377                                          * to stations have the necessary basic
378                                          * rate bit set.
379                                          */
380                                         nrs->rs_rates[i] = srs->rs_rates[j];
381                                         break;
382                                 }
383                         }
384                         if (j == srs->rs_nrates) {
385                                 /*
386                                  * A rate in the node's rate set is not
387                                  * supported.  If this is a basic rate and we
388                                  * are operating as an AP then this is an error.
389                                  * Otherwise we just discard/ignore the rate.
390                                  * Note that this is important for 11b stations
391                                  * when they want to associate with an 11g AP.
392                                  */
393                                 if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
394                                     (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
395                                         error++;
396                                 ignore++;
397                         }
398                 }
399                 if (flags & IEEE80211_F_DODEL) {
400                         /*
401                          * Delete unacceptable rates.
402                          */
403                         if (ignore) {
404                                 nrs->rs_nrates--;
405                                 for (j = i; j < nrs->rs_nrates; j++)
406                                         nrs->rs_rates[j] = nrs->rs_rates[j + 1];
407                                 nrs->rs_rates[j] = 0;
408                                 continue;
409                         }
410                 }
411                 if (!ignore)
412                         okrate = nrs->rs_rates[i];
413                 i++;
414         }
415         if (okrate == 0 || error != 0 ||
416             ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
417                 return badrate | IEEE80211_RATE_BASIC;
418         else
419                 return RV(okrate);
420 #undef RV
421 }
422
423 /*
424  * Reset 11g-related state.
425  */
426 void
427 ieee80211_reset_erp(struct ieee80211com *ic)
428 {
429         ic->ic_flags &= ~IEEE80211_F_USEPROT;
430         ic->ic_nonerpsta = 0;
431         ic->ic_longslotsta = 0;
432         /*
433          * Short slot time is enabled only when operating in 11g
434          * and not in an IBSS.  We must also honor whether or not
435          * the driver is capable of doing it.
436          */
437         ieee80211_set_shortslottime(ic,
438                 ic->ic_curmode == IEEE80211_MODE_11A ||
439                 (ic->ic_curmode == IEEE80211_MODE_11G &&
440                 ic->ic_opmode == IEEE80211_M_HOSTAP &&
441                 (ic->ic_caps & IEEE80211_C_SHSLOT)));
442         /*
443          * Set short preamble and ERP barker-preamble flags.
444          */
445         if (ic->ic_curmode == IEEE80211_MODE_11A ||
446             (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
447                 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
448                 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
449         } else {
450                 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
451                 ic->ic_flags |= IEEE80211_F_USEBARKER;
452         }
453 }
454
455 /*
456  * Set the short slot time state and notify the driver.
457  */
458 void
459 ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
460 {
461         if (onoff)
462                 ic->ic_flags |= IEEE80211_F_SHSLOT;
463         else
464                 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
465         /* notify driver */
466         if (ic->ic_updateslot != NULL)
467                 ic->ic_updateslot(ic->ic_ifp);
468 }
469
470 /*
471  * Check if the specified rate set supports ERP.
472  * NB: the rate set is assumed to be sorted.
473  */
474 int
475 ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
476 {
477 #define N(a)    (sizeof(a) / sizeof(a[0]))
478         static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
479         int i, j;
480
481         if (rs->rs_nrates < N(rates))
482                 return 0;
483         for (i = 0; i < N(rates); i++) {
484                 for (j = 0; j < rs->rs_nrates; j++) {
485                         int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
486                         if (rates[i] == r)
487                                 goto next;
488                         if (r > rates[i])
489                                 return 0;
490                 }
491                 return 0;
492         next:
493                 ;
494         }
495         return 1;
496 #undef N
497 }
498
499 /*
500  * Mark the basic rates for the 11g rate table based on the
501  * operating mode.  For real 11g we mark all the 11b rates
502  * and 6, 12, and 24 OFDM.  For 11b compatibility we mark only
503  * 11b rates.  There's also a pseudo 11a-mode used to mark only
504  * the basic OFDM rates.
505  */
506 void
507 ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
508 {
509         static const struct ieee80211_rateset basic[] = {
510             { 0 },                      /* IEEE80211_MODE_AUTO */
511             { 3, { 12, 24, 48 } },      /* IEEE80211_MODE_11A */
512             { 2, { 2, 4 } },            /* IEEE80211_MODE_11B */
513             { 4, { 2, 4, 11, 22 } },    /* IEEE80211_MODE_11G (mixed b/g) */
514             { 0 },                      /* IEEE80211_MODE_FH */
515                                         /* IEEE80211_MODE_PUREG (not yet) */
516             { 7, { 2, 4, 11, 22, 12, 24, 48 } },
517         };
518         int i, j;
519
520         for (i = 0; i < rs->rs_nrates; i++) {
521                 rs->rs_rates[i] &= IEEE80211_RATE_VAL;
522                 for (j = 0; j < basic[mode].rs_nrates; j++)
523                         if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
524                                 rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
525                                 break;
526                         }
527         }
528 }
529
530 /*
531  * WME protocol support.  The following parameters come from the spec.
532  */
533 typedef struct phyParamType {
534         uint8_t aifsn; 
535         uint8_t logcwmin;
536         uint8_t logcwmax; 
537         uint16_t txopLimit;
538         uint8_t acm;
539 } paramType;
540
541 static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
542         { 3, 4, 6 },            /* IEEE80211_MODE_AUTO */
543         { 3, 4, 6 },            /* IEEE80211_MODE_11A */ 
544         { 3, 5, 7 },            /* IEEE80211_MODE_11B */ 
545         { 3, 4, 6 },            /* IEEE80211_MODE_11G */ 
546         { 3, 5, 7 },            /* IEEE80211_MODE_FH */ 
547         { 2, 3, 5 },            /* IEEE80211_MODE_TURBO_A */ 
548         { 2, 3, 5 },            /* IEEE80211_MODE_TURBO_G */ 
549 };
550 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
551         { 7, 4, 10 },           /* IEEE80211_MODE_AUTO */
552         { 7, 4, 10 },           /* IEEE80211_MODE_11A */ 
553         { 7, 5, 10 },           /* IEEE80211_MODE_11B */ 
554         { 7, 4, 10 },           /* IEEE80211_MODE_11G */ 
555         { 7, 5, 10 },           /* IEEE80211_MODE_FH */ 
556         { 7, 3, 10 },           /* IEEE80211_MODE_TURBO_A */ 
557         { 7, 3, 10 },           /* IEEE80211_MODE_TURBO_G */ 
558 };
559 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
560         { 1, 3, 4,  94 },       /* IEEE80211_MODE_AUTO */
561         { 1, 3, 4,  94 },       /* IEEE80211_MODE_11A */ 
562         { 1, 4, 5, 188 },       /* IEEE80211_MODE_11B */ 
563         { 1, 3, 4,  94 },       /* IEEE80211_MODE_11G */ 
564         { 1, 4, 5, 188 },       /* IEEE80211_MODE_FH */ 
565         { 1, 2, 3,  94 },       /* IEEE80211_MODE_TURBO_A */ 
566         { 1, 2, 3,  94 },       /* IEEE80211_MODE_TURBO_G */ 
567 };
568 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
569         { 1, 2, 3,  47 },       /* IEEE80211_MODE_AUTO */
570         { 1, 2, 3,  47 },       /* IEEE80211_MODE_11A */ 
571         { 1, 3, 4, 102 },       /* IEEE80211_MODE_11B */ 
572         { 1, 2, 3,  47 },       /* IEEE80211_MODE_11G */ 
573         { 1, 3, 4, 102 },       /* IEEE80211_MODE_FH */ 
574         { 1, 2, 2,  47 },       /* IEEE80211_MODE_TURBO_A */ 
575         { 1, 2, 2,  47 },       /* IEEE80211_MODE_TURBO_G */ 
576 };
577
578 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
579         { 3, 4, 10 },           /* IEEE80211_MODE_AUTO */
580         { 3, 4, 10 },           /* IEEE80211_MODE_11A */ 
581         { 3, 5, 10 },           /* IEEE80211_MODE_11B */ 
582         { 3, 4, 10 },           /* IEEE80211_MODE_11G */ 
583         { 3, 5, 10 },           /* IEEE80211_MODE_FH */ 
584         { 2, 3, 10 },           /* IEEE80211_MODE_TURBO_A */ 
585         { 2, 3, 10 },           /* IEEE80211_MODE_TURBO_G */ 
586 };
587 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
588         { 2, 3, 4,  94 },       /* IEEE80211_MODE_AUTO */
589         { 2, 3, 4,  94 },       /* IEEE80211_MODE_11A */ 
590         { 2, 4, 5, 188 },       /* IEEE80211_MODE_11B */ 
591         { 2, 3, 4,  94 },       /* IEEE80211_MODE_11G */ 
592         { 2, 4, 5, 188 },       /* IEEE80211_MODE_FH */ 
593         { 2, 2, 3,  94 },       /* IEEE80211_MODE_TURBO_A */ 
594         { 2, 2, 3,  94 },       /* IEEE80211_MODE_TURBO_G */ 
595 };
596 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
597         { 2, 2, 3,  47 },       /* IEEE80211_MODE_AUTO */
598         { 2, 2, 3,  47 },       /* IEEE80211_MODE_11A */ 
599         { 2, 3, 4, 102 },       /* IEEE80211_MODE_11B */ 
600         { 2, 2, 3,  47 },       /* IEEE80211_MODE_11G */ 
601         { 2, 3, 4, 102 },       /* IEEE80211_MODE_FH */ 
602         { 1, 2, 2,  47 },       /* IEEE80211_MODE_TURBO_A */ 
603         { 1, 2, 2,  47 },       /* IEEE80211_MODE_TURBO_G */ 
604 };
605
606 void
607 ieee80211_wme_initparams(struct ieee80211com *ic)
608 {
609         struct ieee80211_wme_state *wme = &ic->ic_wme;
610         const paramType *pPhyParam, *pBssPhyParam;
611         struct wmeParams *wmep;
612         int i;
613
614         if ((ic->ic_caps & IEEE80211_C_WME) == 0)
615                 return;
616
617         for (i = 0; i < WME_NUM_AC; i++) {
618                 switch (i) {
619                 case WME_AC_BK:
620                         pPhyParam = &phyParamForAC_BK[ic->ic_curmode];
621                         pBssPhyParam = &phyParamForAC_BK[ic->ic_curmode];
622                         break;
623                 case WME_AC_VI:
624                         pPhyParam = &phyParamForAC_VI[ic->ic_curmode];
625                         pBssPhyParam = &bssPhyParamForAC_VI[ic->ic_curmode];
626                         break;
627                 case WME_AC_VO:
628                         pPhyParam = &phyParamForAC_VO[ic->ic_curmode];
629                         pBssPhyParam = &bssPhyParamForAC_VO[ic->ic_curmode];
630                         break;
631                 case WME_AC_BE:
632                 default:
633                         pPhyParam = &phyParamForAC_BE[ic->ic_curmode];
634                         pBssPhyParam = &bssPhyParamForAC_BE[ic->ic_curmode];
635                         break;
636                 }
637
638                 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
639                 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
640                         wmep->wmep_acm = pPhyParam->acm;
641                         wmep->wmep_aifsn = pPhyParam->aifsn;    
642                         wmep->wmep_logcwmin = pPhyParam->logcwmin;      
643                         wmep->wmep_logcwmax = pPhyParam->logcwmax;              
644                         wmep->wmep_txopLimit = pPhyParam->txopLimit;
645                 } else {
646                         wmep->wmep_acm = pBssPhyParam->acm;
647                         wmep->wmep_aifsn = pBssPhyParam->aifsn; 
648                         wmep->wmep_logcwmin = pBssPhyParam->logcwmin;   
649                         wmep->wmep_logcwmax = pBssPhyParam->logcwmax;           
650                         wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
651
652                 }       
653                 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
654                         "%s: %s chan [acm %u aifsn %u log2(cwmin) %u "
655                         "log2(cwmax) %u txpoLimit %u]\n", __func__
656                         , ieee80211_wme_acnames[i]
657                         , wmep->wmep_acm
658                         , wmep->wmep_aifsn
659                         , wmep->wmep_logcwmin
660                         , wmep->wmep_logcwmax
661                         , wmep->wmep_txopLimit
662                 );
663
664                 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
665                 wmep->wmep_acm = pBssPhyParam->acm;
666                 wmep->wmep_aifsn = pBssPhyParam->aifsn; 
667                 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;   
668                 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;           
669                 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
670                 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
671                         "%s: %s  bss [acm %u aifsn %u log2(cwmin) %u "
672                         "log2(cwmax) %u txpoLimit %u]\n", __func__
673                         , ieee80211_wme_acnames[i]
674                         , wmep->wmep_acm
675                         , wmep->wmep_aifsn
676                         , wmep->wmep_logcwmin
677                         , wmep->wmep_logcwmax
678                         , wmep->wmep_txopLimit
679                 );
680         }
681         /* NB: check ic_bss to avoid NULL deref on initial attach */
682         if (ic->ic_bss != NULL) {
683                 /*
684                  * Calculate agressive mode switching threshold based
685                  * on beacon interval.  This doesn't need locking since
686                  * we're only called before entering the RUN state at
687                  * which point we start sending beacon frames.
688                  */
689                 wme->wme_hipri_switch_thresh =
690                         (HIGH_PRI_SWITCH_THRESH * ic->ic_bss->ni_intval) / 100;
691                 ieee80211_wme_updateparams(ic);
692         }
693 }
694
695 /*
696  * Update WME parameters for ourself and the BSS.
697  */
698 void
699 ieee80211_wme_updateparams(struct ieee80211com *ic)
700 {
701         static const paramType phyParam[IEEE80211_MODE_MAX] = {
702                 { 2, 4, 10, 64 },       /* IEEE80211_MODE_AUTO */ 
703                 { 2, 4, 10, 64 },       /* IEEE80211_MODE_11A */ 
704                 { 2, 5, 10, 64 },       /* IEEE80211_MODE_11B */ 
705                 { 2, 4, 10, 64 },       /* IEEE80211_MODE_11G */ 
706                 { 2, 5, 10, 64 },       /* IEEE80211_MODE_FH */ 
707                 { 1, 3, 10, 64 },       /* IEEE80211_MODE_TURBO_A */ 
708                 { 1, 3, 10, 64 },       /* IEEE80211_MODE_TURBO_G */ 
709         };
710         struct ieee80211_wme_state *wme = &ic->ic_wme;
711         const struct wmeParams *wmep;
712         struct wmeParams *chanp, *bssp;
713         int i;
714
715         ASSERT_SERIALIZED(ic->ic_ifp->if_serializer);
716
717         if ((ic->ic_caps & IEEE80211_C_WME) == 0)
718                 return;
719
720         /* set up the channel access parameters for the physical device */
721         for (i = 0; i < WME_NUM_AC; i++) {
722                 chanp = &wme->wme_chanParams.cap_wmeParams[i];
723                 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
724                 chanp->wmep_aifsn = wmep->wmep_aifsn;
725                 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
726                 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
727                 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
728
729                 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
730                 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
731                 chanp->wmep_aifsn = wmep->wmep_aifsn;
732                 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
733                 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
734                 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
735         }
736
737         /*
738          * This implements agressive mode as found in certain
739          * vendors' AP's.  When there is significant high
740          * priority (VI/VO) traffic in the BSS throttle back BE
741          * traffic by using conservative parameters.  Otherwise
742          * BE uses agressive params to optimize performance of
743          * legacy/non-QoS traffic.
744          */
745         if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
746              (wme->wme_flags & WME_F_AGGRMODE) != 0) ||
747             (ic->ic_opmode == IEEE80211_M_STA &&
748              (ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
749             (ic->ic_flags & IEEE80211_F_WME) == 0) {
750                 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
751                 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
752
753                 chanp->wmep_aifsn = bssp->wmep_aifsn =
754                         phyParam[ic->ic_curmode].aifsn;
755                 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
756                         phyParam[ic->ic_curmode].logcwmin;
757                 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
758                         phyParam[ic->ic_curmode].logcwmax;
759                 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
760                         (ic->ic_flags & IEEE80211_F_BURST) ?
761                                 phyParam[ic->ic_curmode].txopLimit : 0;         
762                 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
763                         "%s: %s [acm %u aifsn %u log2(cwmin) %u "
764                         "log2(cwmax) %u txpoLimit %u]\n", __func__
765                         , ieee80211_wme_acnames[WME_AC_BE]
766                         , chanp->wmep_acm
767                         , chanp->wmep_aifsn
768                         , chanp->wmep_logcwmin
769                         , chanp->wmep_logcwmax
770                         , chanp->wmep_txopLimit
771                 );
772         }
773         
774         if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
775             ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
776                 static const uint8_t logCwMin[IEEE80211_MODE_MAX] = {
777                         3,      /* IEEE80211_MODE_AUTO */
778                         3,      /* IEEE80211_MODE_11A */
779                         4,      /* IEEE80211_MODE_11B */
780                         3,      /* IEEE80211_MODE_11G */
781                         4,      /* IEEE80211_MODE_FH */
782                         3,      /* IEEE80211_MODE_TURBO_A */
783                         3,      /* IEEE80211_MODE_TURBO_G */
784                 };
785                 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
786                 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
787
788                 chanp->wmep_logcwmin = bssp->wmep_logcwmin = 
789                         logCwMin[ic->ic_curmode];
790                 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
791                         "%s: %s log2(cwmin) %u\n", __func__
792                         , ieee80211_wme_acnames[WME_AC_BE]
793                         , chanp->wmep_logcwmin
794                 );
795         }       
796         if (ic->ic_opmode == IEEE80211_M_HOSTAP) {      /* XXX ibss? */
797                 /*
798                  * Arrange for a beacon update and bump the parameter
799                  * set number so associated stations load the new values.
800                  */
801                 wme->wme_bssChanParams.cap_info =
802                         (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
803                 ic->ic_flags |= IEEE80211_F_WMEUPDATE;
804         }
805
806         wme->wme_update(ic);
807
808         IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
809                 "%s: WME params updated, cap_info 0x%x\n", __func__,
810                 ic->ic_opmode == IEEE80211_M_STA ?
811                         wme->wme_wmeChanParams.cap_info :
812                         wme->wme_bssChanParams.cap_info);
813 }
814
815 void
816 ieee80211_beacon_miss(struct ieee80211com *ic)
817 {
818
819         if (ic->ic_flags & IEEE80211_F_SCAN) {
820                 /* XXX check ic_curchan != ic_bsschan? */
821                 return;
822         }
823         IEEE80211_DPRINTF(ic,
824                 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
825                 "%s\n", "beacon miss");
826
827         /*
828          * Our handling is only meaningful for stations that are
829          * associated; any other conditions else will be handled
830          * through different means (e.g. the tx timeout on mgt frames).
831          */
832         if (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN)
833                 return;
834
835         if (++ic->ic_bmiss_count < ic->ic_bmiss_max) {
836                 /*
837                  * Send a directed probe req before falling back to a scan;
838                  * if we receive a response ic_bmiss_count will be reset.
839                  * Some cards mistakenly report beacon miss so this avoids
840                  * the expensive scan if the ap is still there.
841                  */
842                 ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr,
843                         ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid,
844                         ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen,
845                         ic->ic_opt_ie, ic->ic_opt_ie_len);
846                 return;
847         }
848         ic->ic_bmiss_count = 0;
849         ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
850 }
851
852 /*
853  * Software beacon miss handling.  Check if any beacons
854  * were received in the last period.  If not post a
855  * beacon miss; otherwise reset the counter.
856  */
857 static void
858 ieee80211_swbmiss(void *arg)
859 {
860         struct ieee80211com *ic = arg;
861         struct ifnet *ifp = ic->ic_ifp;
862
863         lwkt_serialize_enter(ifp->if_serializer);
864
865         if (ic->ic_swbmiss_count == 0) {
866                 ieee80211_beacon_miss(ic);
867                 if (ic->ic_bmiss_count == 0)    /* don't re-arm timer */
868                         goto back;
869         } else
870                 ic->ic_swbmiss_count = 0;
871         callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
872                 ieee80211_swbmiss, ic);
873
874 back:
875         lwkt_serialize_exit(ifp->if_serializer);
876 }
877
878 static void
879 sta_disassoc(void *arg, struct ieee80211_node *ni)
880 {
881         struct ieee80211com *ic = arg;
882
883         if (ni->ni_associd != 0) {
884                 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
885                         IEEE80211_REASON_ASSOC_LEAVE);
886                 ieee80211_node_leave(ic, ni);
887         }
888 }
889
890 static void
891 sta_deauth(void *arg, struct ieee80211_node *ni)
892 {
893         struct ieee80211com *ic = arg;
894
895         IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
896                 IEEE80211_REASON_ASSOC_LEAVE);
897 }
898
899 static int
900 ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
901 {
902         struct ifnet *ifp = ic->ic_ifp;
903         struct ieee80211_node *ni;
904         enum ieee80211_state ostate;
905
906         ostate = ic->ic_state;
907         IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
908                 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
909         ic->ic_state = nstate;                  /* state transition */
910         ni = ic->ic_bss;                        /* NB: no reference held */
911         if (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)
912                 callout_stop(&ic->ic_swbmiss);
913         switch (nstate) {
914         case IEEE80211_S_INIT:
915                 switch (ostate) {
916                 case IEEE80211_S_INIT:
917                         break;
918                 case IEEE80211_S_RUN:
919                         switch (ic->ic_opmode) {
920                         case IEEE80211_M_STA:
921                                 IEEE80211_SEND_MGMT(ic, ni,
922                                     IEEE80211_FC0_SUBTYPE_DISASSOC,
923                                     IEEE80211_REASON_ASSOC_LEAVE);
924                                 ieee80211_sta_leave(ic, ni);
925                                 break;
926                         case IEEE80211_M_HOSTAP:
927                                 ieee80211_iterate_nodes(&ic->ic_sta,
928                                         sta_disassoc, ic);
929                                 break;
930                         default:
931                                 break;
932                         }
933                         goto reset;
934                 case IEEE80211_S_ASSOC:
935                         switch (ic->ic_opmode) {
936                         case IEEE80211_M_STA:
937                                 IEEE80211_SEND_MGMT(ic, ni,
938                                     IEEE80211_FC0_SUBTYPE_DEAUTH,
939                                     IEEE80211_REASON_AUTH_LEAVE);
940                                 break;
941                         case IEEE80211_M_HOSTAP:
942                                 ieee80211_iterate_nodes(&ic->ic_sta,
943                                         sta_deauth, ic);
944                                 break;
945                         default:
946                                 break;
947                         }
948                         goto reset;
949                 case IEEE80211_S_SCAN:
950                         ieee80211_cancel_scan(ic);
951                         goto reset;
952                 case IEEE80211_S_AUTH:
953                 reset:
954                         ic->ic_mgt_timer = 0;
955                         IF_DRAIN(&ic->ic_mgtq);
956                         ieee80211_reset_bss(ic);
957                         break;
958                 }
959                 if (ic->ic_auth->ia_detach != NULL)
960                         ic->ic_auth->ia_detach(ic);
961                 break;
962         case IEEE80211_S_SCAN:
963                 switch (ostate) {
964                 case IEEE80211_S_INIT:
965                         if ((ic->ic_opmode == IEEE80211_M_HOSTAP ||
966                              ic->ic_opmode == IEEE80211_M_IBSS ||
967                              ic->ic_opmode == IEEE80211_M_AHDEMO) &&
968                             ic->ic_des_chan != IEEE80211_CHAN_ANYC) {
969                                 /*
970                                  * AP operation and we already have a channel;
971                                  * bypass the scan and startup immediately.
972                                  */
973                                 ieee80211_create_ibss(ic, ic->ic_des_chan);
974                         } else {
975                                 ieee80211_begin_scan(ic, arg);
976                         }
977                         break;
978                 case IEEE80211_S_SCAN:
979                         /*
980                          * Scan next. If doing an active scan probe
981                          * for the requested ap (if any).
982                          */
983                         if (ic->ic_flags & IEEE80211_F_ASCAN)
984                                 ieee80211_probe_curchan(ic, 0);
985                         break;
986                 case IEEE80211_S_RUN:
987                         /* beacon miss */
988                         IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE,
989                                 "no recent beacons from %6D; rescanning\n",
990                                 ic->ic_bss->ni_bssid, ":");
991                         ieee80211_sta_leave(ic, ni);
992                         ic->ic_flags &= ~IEEE80211_F_SIBSS;     /* XXX */
993                         /* FALLTHRU */
994                 case IEEE80211_S_AUTH:
995                 case IEEE80211_S_ASSOC:
996                         /* timeout restart scan */
997                         ni = ieee80211_find_node(&ic->ic_scan,
998                                 ic->ic_bss->ni_macaddr);
999                         if (ni != NULL) {
1000                                 ni->ni_fails++;
1001                                 ieee80211_unref_node(&ni);
1002                         }
1003                         if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1004                                 ieee80211_begin_scan(ic, arg);
1005                         break;
1006                 }
1007                 break;
1008         case IEEE80211_S_AUTH:
1009                 switch (ostate) {
1010                 case IEEE80211_S_INIT:
1011                 case IEEE80211_S_SCAN:
1012                         IEEE80211_SEND_MGMT(ic, ni,
1013                             IEEE80211_FC0_SUBTYPE_AUTH, 1);
1014                         break;
1015                 case IEEE80211_S_AUTH:
1016                 case IEEE80211_S_ASSOC:
1017                         switch (arg) {
1018                         case IEEE80211_FC0_SUBTYPE_AUTH:
1019                                 /* ??? */
1020                                 IEEE80211_SEND_MGMT(ic, ni,
1021                                     IEEE80211_FC0_SUBTYPE_AUTH, 2);
1022                                 break;
1023                         case IEEE80211_FC0_SUBTYPE_DEAUTH:
1024                                 /* ignore and retry scan on timeout */
1025                                 break;
1026                         }
1027                         break;
1028                 case IEEE80211_S_RUN:
1029                         switch (arg) {
1030                         case IEEE80211_FC0_SUBTYPE_AUTH:
1031                                 IEEE80211_SEND_MGMT(ic, ni,
1032                                     IEEE80211_FC0_SUBTYPE_AUTH, 2);
1033                                 ic->ic_state = ostate;  /* stay RUN */
1034                                 break;
1035                         case IEEE80211_FC0_SUBTYPE_DEAUTH:
1036                                 ieee80211_sta_leave(ic, ni);
1037                                 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1038                                         /* try to reauth */
1039                                         IEEE80211_SEND_MGMT(ic, ni,
1040                                             IEEE80211_FC0_SUBTYPE_AUTH, 1);
1041                                 }
1042                                 break;
1043                         }
1044                         break;
1045                 }
1046                 break;
1047         case IEEE80211_S_ASSOC:
1048                 switch (ostate) {
1049                 case IEEE80211_S_INIT:
1050                 case IEEE80211_S_SCAN:
1051                 case IEEE80211_S_ASSOC:
1052                         IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1053                                 "%s: invalid transition\n", __func__);
1054                         break;
1055                 case IEEE80211_S_AUTH:
1056                         IEEE80211_SEND_MGMT(ic, ni,
1057                             IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
1058                         break;
1059                 case IEEE80211_S_RUN:
1060                         ieee80211_sta_leave(ic, ni);
1061                         if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1062                                 IEEE80211_SEND_MGMT(ic, ni,
1063                                     IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
1064                         }
1065                         break;
1066                 }
1067                 break;
1068         case IEEE80211_S_RUN:
1069                 if (ic->ic_flags & IEEE80211_F_WPA) {
1070                         /* XXX validate prerequisites */
1071                 }
1072                 switch (ostate) {
1073                 case IEEE80211_S_INIT:
1074                         if (ic->ic_opmode == IEEE80211_M_MONITOR)
1075                                 break;
1076                         /* fall thru... */
1077                 case IEEE80211_S_AUTH:
1078                         IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1079                                 "%s: invalid transition\n", __func__);
1080                         /* fall thru... */
1081                 case IEEE80211_S_RUN:
1082                         break;
1083                 case IEEE80211_S_SCAN:          /* adhoc/hostap mode */
1084                 case IEEE80211_S_ASSOC:         /* infra mode */
1085                         KASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates,
1086                                 ("%s: bogus xmit rate %u setup\n", __func__,
1087                                         ni->ni_txrate));
1088 #ifdef IEEE80211_DEBUG
1089                         if (ieee80211_msg_debug(ic)) {
1090                                 if (ic->ic_opmode == IEEE80211_M_STA)
1091                                         if_printf(ifp, "associated ");
1092                                 else
1093                                         if_printf(ifp, "synchronized ");
1094                                 printf("with %6D ssid ", ni->ni_bssid, ":");
1095                                 ieee80211_print_essid(ic->ic_bss->ni_essid,
1096                                     ni->ni_esslen);
1097                                 printf(" channel %d start %uMb\n",
1098                                         ieee80211_chan2ieee(ic, ic->ic_curchan),
1099                                         IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
1100                         }
1101 #endif
1102                         ic->ic_mgt_timer = 0;
1103                         if (ic->ic_opmode == IEEE80211_M_STA)
1104                                 ieee80211_notify_node_join(ic, ni, 
1105                                         arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
1106                         ifp->if_start(ifp);     /* XXX not authorized yet */
1107                         break;
1108                 }
1109                 if (ostate != IEEE80211_S_RUN &&
1110                     ic->ic_opmode == IEEE80211_M_STA &&
1111                     (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)) {
1112                         /*
1113                          * Start s/w beacon miss timer for devices w/o
1114                          * hardware support.  We fudge a bit here since
1115                          * we're doing this in software.
1116                          */
1117                         ic->ic_swbmiss_period = IEEE80211_TU_TO_TICKS(
1118                                 2 * ic->ic_bmissthreshold * ni->ni_intval);
1119                         ic->ic_swbmiss_count = 0;
1120                         callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
1121                                 ieee80211_swbmiss, ic);
1122                 }
1123                 /*
1124                  * Start/stop the authenticator when operating as an
1125                  * AP.  We delay until here to allow configuration to
1126                  * happen out of order.
1127                  */
1128                 if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
1129                     ic->ic_auth->ia_attach != NULL) {
1130                         /* XXX check failure */
1131                         ic->ic_auth->ia_attach(ic);
1132                 } else if (ic->ic_auth->ia_detach != NULL) {
1133                         ic->ic_auth->ia_detach(ic);
1134                 }
1135                 /*
1136                  * When 802.1x is not in use mark the port authorized
1137                  * at this point so traffic can flow.
1138                  */
1139                 if (ni->ni_authmode != IEEE80211_AUTH_8021X)
1140                         ieee80211_node_authorize(ni);
1141                 /*
1142                  * Enable inactivity processing.
1143                  * XXX
1144                  */
1145                 ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
1146                 ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
1147                 break;
1148         }
1149         return 0;
1150 }