1 /*-
2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2007 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/7.3/sys/net80211/ieee80211_proto.c 174007 2007-11-28 06:11:18Z sam $");
29
30 /*
31 * IEEE 802.11 protocol support.
32 */
33
34 #include "opt_inet.h"
35
36 #include <sys/param.h>
37 #include <sys/kernel.h>
38 #include <sys/systm.h>
39
40 #include <sys/socket.h>
41
42 #include <net/if.h>
43 #include <net/if_media.h>
44 #include <net/ethernet.h> /* XXX for ether_sprintf */
45
46 #include <net80211/ieee80211_var.h>
47
48 /* XXX tunables */
49 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
50 #define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
51
52 #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
53
54 const char *ieee80211_mgt_subtype_name[] = {
55 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
56 "probe_req", "probe_resp", "reserved#6", "reserved#7",
57 "beacon", "atim", "disassoc", "auth",
58 "deauth", "action", "reserved#14", "reserved#15"
59 };
60 const char *ieee80211_ctl_subtype_name[] = {
61 "reserved#0", "reserved#1", "reserved#2", "reserved#3",
62 "reserved#3", "reserved#5", "reserved#6", "reserved#7",
63 "reserved#8", "reserved#9", "ps_poll", "rts",
64 "cts", "ack", "cf_end", "cf_end_ack"
65 };
66 const char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = {
67 "IBSS", /* IEEE80211_M_IBSS */
68 "STA", /* IEEE80211_M_STA */
69 "#2",
70 "AHDEMO", /* IEEE80211_M_AHDEMO */
71 "#4", "#5",
72 "HOSTAP", /* IEEE80211_M_HOSTAP */
73 "#7",
74 "MONITOR" /* IEEE80211_M_MONITOR */
75 };
76 const char *ieee80211_state_name[IEEE80211_S_MAX] = {
77 "INIT", /* IEEE80211_S_INIT */
78 "SCAN", /* IEEE80211_S_SCAN */
79 "AUTH", /* IEEE80211_S_AUTH */
80 "ASSOC", /* IEEE80211_S_ASSOC */
81 "CAC", /* IEEE80211_S_CAC */
82 "RUN", /* IEEE80211_S_RUN */
83 "CSA", /* IEEE80211_S_CSA */
84 "SLEEP", /* IEEE80211_S_SLEEP */
85 };
86 const char *ieee80211_wme_acnames[] = {
87 "WME_AC_BE",
88 "WME_AC_BK",
89 "WME_AC_VI",
90 "WME_AC_VO",
91 "WME_UPSD",
92 };
93
94 static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
95
96 static void
97 null_update_beacon(struct ieee80211com *ic, int item)
98 {
99 }
100
101 void
102 ieee80211_proto_attach(struct ieee80211com *ic)
103 {
104 struct ifnet *ifp = ic->ic_ifp;
105
106 /* XXX room for crypto */
107 ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
108
109 ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
110 ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
111 ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
112 ic->ic_bmiss_max = IEEE80211_BMISS_MAX;
113 callout_init(&ic->ic_swbmiss, CALLOUT_MPSAFE);
114 callout_init(&ic->ic_mgtsend, CALLOUT_MPSAFE);
115 ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
116 ic->ic_protmode = IEEE80211_PROT_CTSONLY;
117 ic->ic_roaming = IEEE80211_ROAMING_AUTO;
118
119 ic->ic_wme.wme_hipri_switch_hysteresis =
120 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
121
122 mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF);
123
124 /* protocol state change handler */
125 ic->ic_newstate = ieee80211_newstate;
126 ic->ic_update_beacon = null_update_beacon;
127
128 /* initialize management frame handlers */
129 ic->ic_recv_mgmt = ieee80211_recv_mgmt;
130 ic->ic_send_mgmt = ieee80211_send_mgmt;
131 ic->ic_raw_xmit = ieee80211_raw_xmit;
132 }
133
134 void
135 ieee80211_proto_detach(struct ieee80211com *ic)
136 {
137
138 /*
139 * This should not be needed as we detach when reseting
140 * the state but be conservative here since the
141 * authenticator may do things like spawn kernel threads.
142 */
143 if (ic->ic_auth->ia_detach)
144 ic->ic_auth->ia_detach(ic);
145
146 ieee80211_drain_ifq(&ic->ic_mgtq);
147 mtx_destroy(&ic->ic_mgtq.ifq_mtx);
148
149 /*
150 * Detach any ACL'ator.
151 */
152 if (ic->ic_acl != NULL)
153 ic->ic_acl->iac_detach(ic);
154 }
155
156 /*
157 * Simple-minded authenticator module support.
158 */
159
160 #define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1)
161 /* XXX well-known names */
162 static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
163 "wlan_internal", /* IEEE80211_AUTH_NONE */
164 "wlan_internal", /* IEEE80211_AUTH_OPEN */
165 "wlan_internal", /* IEEE80211_AUTH_SHARED */
166 "wlan_xauth", /* IEEE80211_AUTH_8021X */
167 "wlan_internal", /* IEEE80211_AUTH_AUTO */
168 "wlan_xauth", /* IEEE80211_AUTH_WPA */
169 };
170 static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
171
172 static const struct ieee80211_authenticator auth_internal = {
173 .ia_name = "wlan_internal",
174 .ia_attach = NULL,
175 .ia_detach = NULL,
176 .ia_node_join = NULL,
177 .ia_node_leave = NULL,
178 };
179
180 /*
181 * Setup internal authenticators once; they are never unregistered.
182 */
183 static void
184 ieee80211_auth_setup(void)
185 {
186 ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
187 ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
188 ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
189 }
190 SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
191
192 const struct ieee80211_authenticator *
193 ieee80211_authenticator_get(int auth)
194 {
195 if (auth >= IEEE80211_AUTH_MAX)
196 return NULL;
197 if (authenticators[auth] == NULL)
198 ieee80211_load_module(auth_modnames[auth]);
199 return authenticators[auth];
200 }
201
202 void
203 ieee80211_authenticator_register(int type,
204 const struct ieee80211_authenticator *auth)
205 {
206 if (type >= IEEE80211_AUTH_MAX)
207 return;
208 authenticators[type] = auth;
209 }
210
211 void
212 ieee80211_authenticator_unregister(int type)
213 {
214
215 if (type >= IEEE80211_AUTH_MAX)
216 return;
217 authenticators[type] = NULL;
218 }
219
220 /*
221 * Very simple-minded ACL module support.
222 */
223 /* XXX just one for now */
224 static const struct ieee80211_aclator *acl = NULL;
225
226 void
227 ieee80211_aclator_register(const struct ieee80211_aclator *iac)
228 {
229 printf("wlan: %s acl policy registered\n", iac->iac_name);
230 acl = iac;
231 }
232
233 void
234 ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
235 {
236 if (acl == iac)
237 acl = NULL;
238 printf("wlan: %s acl policy unregistered\n", iac->iac_name);
239 }
240
241 const struct ieee80211_aclator *
242 ieee80211_aclator_get(const char *name)
243 {
244 if (acl == NULL)
245 ieee80211_load_module("wlan_acl");
246 return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
247 }
248
249 void
250 ieee80211_print_essid(const uint8_t *essid, int len)
251 {
252 const uint8_t *p;
253 int i;
254
255 if (len > IEEE80211_NWID_LEN)
256 len = IEEE80211_NWID_LEN;
257 /* determine printable or not */
258 for (i = 0, p = essid; i < len; i++, p++) {
259 if (*p < ' ' || *p > 0x7e)
260 break;
261 }
262 if (i == len) {
263 printf("\"");
264 for (i = 0, p = essid; i < len; i++, p++)
265 printf("%c", *p);
266 printf("\"");
267 } else {
268 printf("0x");
269 for (i = 0, p = essid; i < len; i++, p++)
270 printf("%02x", *p);
271 }
272 }
273
274 void
275 ieee80211_dump_pkt(struct ieee80211com *ic,
276 const uint8_t *buf, int len, int rate, int rssi)
277 {
278 const struct ieee80211_frame *wh;
279 int i;
280
281 wh = (const struct ieee80211_frame *)buf;
282 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
283 case IEEE80211_FC1_DIR_NODS:
284 printf("NODS %s", ether_sprintf(wh->i_addr2));
285 printf("->%s", ether_sprintf(wh->i_addr1));
286 printf("(%s)", ether_sprintf(wh->i_addr3));
287 break;
288 case IEEE80211_FC1_DIR_TODS:
289 printf("TODS %s", ether_sprintf(wh->i_addr2));
290 printf("->%s", ether_sprintf(wh->i_addr3));
291 printf("(%s)", ether_sprintf(wh->i_addr1));
292 break;
293 case IEEE80211_FC1_DIR_FROMDS:
294 printf("FRDS %s", ether_sprintf(wh->i_addr3));
295 printf("->%s", ether_sprintf(wh->i_addr1));
296 printf("(%s)", ether_sprintf(wh->i_addr2));
297 break;
298 case IEEE80211_FC1_DIR_DSTODS:
299 printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1]));
300 printf("->%s", ether_sprintf(wh->i_addr3));
301 printf("(%s", ether_sprintf(wh->i_addr2));
302 printf("->%s)", ether_sprintf(wh->i_addr1));
303 break;
304 }
305 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
306 case IEEE80211_FC0_TYPE_DATA:
307 printf(" data");
308 break;
309 case IEEE80211_FC0_TYPE_MGT:
310 printf(" %s", ieee80211_mgt_subtype_name[
311 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
312 >> IEEE80211_FC0_SUBTYPE_SHIFT]);
313 break;
314 default:
315 printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
316 break;
317 }
318 if (IEEE80211_QOS_HAS_SEQ(wh)) {
319 const struct ieee80211_qosframe *qwh =
320 (const struct ieee80211_qosframe *)buf;
321 printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID,
322 qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : "");
323 }
324 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
325 int off;
326
327 off = ieee80211_anyhdrspace(ic, wh);
328 printf(" WEP [IV %.02x %.02x %.02x",
329 buf[off+0], buf[off+1], buf[off+2]);
330 if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV)
331 printf(" %.02x %.02x %.02x",
332 buf[off+4], buf[off+5], buf[off+6]);
333 printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6);
334 }
335 if (rate >= 0)
336 printf(" %dM", rate / 2);
337 if (rssi >= 0)
338 printf(" +%d", rssi);
339 printf("\n");
340 if (len > 0) {
341 for (i = 0; i < len; i++) {
342 if ((i & 1) == 0)
343 printf(" ");
344 printf("%02x", buf[i]);
345 }
346 printf("\n");
347 }
348 }
349
350 static __inline int
351 findrix(const struct ieee80211_rateset *rs, int r)
352 {
353 int i;
354
355 for (i = 0; i < rs->rs_nrates; i++)
356 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r)
357 return i;
358 return -1;
359 }
360
361 int
362 ieee80211_fix_rate(struct ieee80211_node *ni,
363 struct ieee80211_rateset *nrs, int flags)
364 {
365 #define RV(v) ((v) & IEEE80211_RATE_VAL)
366 struct ieee80211com *ic = ni->ni_ic;
367 int i, j, rix, error;
368 int okrate, badrate, fixedrate;
369 const struct ieee80211_rateset *srs;
370 uint8_t r;
371
372 error = 0;
373 okrate = badrate = 0;
374 fixedrate = IEEE80211_FIXED_RATE_NONE;
375 srs = ieee80211_get_suprates(ic, ni->ni_chan);
376 for (i = 0; i < nrs->rs_nrates; ) {
377 if (flags & IEEE80211_F_DOSORT) {
378 /*
379 * Sort rates.
380 */
381 for (j = i + 1; j < nrs->rs_nrates; j++) {
382 if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
383 r = nrs->rs_rates[i];
384 nrs->rs_rates[i] = nrs->rs_rates[j];
385 nrs->rs_rates[j] = r;
386 }
387 }
388 }
389 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
390 badrate = r;
391 /*
392 * Check for fixed rate.
393 */
394 if (r == ic->ic_fixed_rate)
395 fixedrate = r;
396 /*
397 * Check against supported rates.
398 */
399 rix = findrix(srs, r);
400 if (flags & IEEE80211_F_DONEGO) {
401 if (rix < 0) {
402 /*
403 * A rate in the node's rate set is not
404 * supported. If this is a basic rate and we
405 * are operating as a STA then this is an error.
406 * Otherwise we just discard/ignore the rate.
407 */
408 if ((flags & IEEE80211_F_JOIN) &&
409 (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
410 error++;
411 } else if ((flags & IEEE80211_F_JOIN) == 0) {
412 /*
413 * Overwrite with the supported rate
414 * value so any basic rate bit is set.
415 */
416 nrs->rs_rates[i] = srs->rs_rates[rix];
417 }
418 }
419 if ((flags & IEEE80211_F_DODEL) && rix < 0) {
420 /*
421 * Delete unacceptable rates.
422 */
423 nrs->rs_nrates--;
424 for (j = i; j < nrs->rs_nrates; j++)
425 nrs->rs_rates[j] = nrs->rs_rates[j + 1];
426 nrs->rs_rates[j] = 0;
427 continue;
428 }
429 if (rix >= 0)
430 okrate = nrs->rs_rates[i];
431 i++;
432 }
433 if (okrate == 0 || error != 0 ||
434 ((flags & IEEE80211_F_DOFRATE) && fixedrate != ic->ic_fixed_rate))
435 return badrate | IEEE80211_RATE_BASIC;
436 else
437 return RV(okrate);
438 #undef RV
439 }
440
441 /*
442 * Reset 11g-related state.
443 */
444 void
445 ieee80211_reset_erp(struct ieee80211com *ic)
446 {
447 ic->ic_flags &= ~IEEE80211_F_USEPROT;
448 ic->ic_nonerpsta = 0;
449 ic->ic_longslotsta = 0;
450 /*
451 * Short slot time is enabled only when operating in 11g
452 * and not in an IBSS. We must also honor whether or not
453 * the driver is capable of doing it.
454 */
455 ieee80211_set_shortslottime(ic,
456 IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
457 IEEE80211_IS_CHAN_HT(ic->ic_curchan) ||
458 (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
459 ic->ic_opmode == IEEE80211_M_HOSTAP &&
460 (ic->ic_caps & IEEE80211_C_SHSLOT)));
461 /*
462 * Set short preamble and ERP barker-preamble flags.
463 */
464 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
465 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
466 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
467 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
468 } else {
469 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
470 ic->ic_flags |= IEEE80211_F_USEBARKER;
471 }
472 }
473
474 /*
475 * Set the short slot time state and notify the driver.
476 */
477 void
478 ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
479 {
480 if (onoff)
481 ic->ic_flags |= IEEE80211_F_SHSLOT;
482 else
483 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
484 /* notify driver */
485 if (ic->ic_updateslot != NULL)
486 ic->ic_updateslot(ic->ic_ifp);
487 }
488
489 /*
490 * Check if the specified rate set supports ERP.
491 * NB: the rate set is assumed to be sorted.
492 */
493 int
494 ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
495 {
496 #define N(a) (sizeof(a) / sizeof(a[0]))
497 static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
498 int i, j;
499
500 if (rs->rs_nrates < N(rates))
501 return 0;
502 for (i = 0; i < N(rates); i++) {
503 for (j = 0; j < rs->rs_nrates; j++) {
504 int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
505 if (rates[i] == r)
506 goto next;
507 if (r > rates[i])
508 return 0;
509 }
510 return 0;
511 next:
512 ;
513 }
514 return 1;
515 #undef N
516 }
517
518 /*
519 * Mark the basic rates for the 11g rate table based on the
520 * operating mode. For real 11g we mark all the 11b rates
521 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only
522 * 11b rates. There's also a pseudo 11a-mode used to mark only
523 * the basic OFDM rates.
524 */
525 void
526 ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
527 {
528 static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = {
529 { .rs_nrates = 0 }, /* IEEE80211_MODE_AUTO */
530 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */
531 { 2, { 2, 4 } }, /* IEEE80211_MODE_11B */
532 { 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G (mixed b/g) */
533 { .rs_nrates = 0 }, /* IEEE80211_MODE_FH */
534 /* IEEE80211_MODE_PUREG (not yet) */
535 { 7, { 2, 4, 11, 22, 12, 24, 48 } },
536 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11NA */
537 /* IEEE80211_MODE_11NG (mixed b/g) */
538 { 7, { 2, 4, 11, 22, 12, 24, 48 } },
539 };
540 int i, j;
541
542 for (i = 0; i < rs->rs_nrates; i++) {
543 rs->rs_rates[i] &= IEEE80211_RATE_VAL;
544 for (j = 0; j < basic[mode].rs_nrates; j++)
545 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
546 rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
547 break;
548 }
549 }
550 }
551
552 /*
553 * WME protocol support. The following parameters come from the spec.
554 */
555 typedef struct phyParamType {
556 uint8_t aifsn;
557 uint8_t logcwmin;
558 uint8_t logcwmax;
559 uint16_t txopLimit;
560 uint8_t acm;
561 } paramType;
562
563 static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
564 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_AUTO */
565 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11A */
566 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11B */
567 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11G */
568 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_FH */
569 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
570 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
571 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
572 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11NA */
573 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11NG */
574 };
575 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
576 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
577 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
578 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
579 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
580 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_FH */
581 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
582 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
583 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
584 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
585 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
586 };
587 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
588 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
589 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
590 { 1, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
591 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
592 { 1, 3, 4, 188, 0 }, /* IEEE80211_MODE_FH */
593 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
594 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
595 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
596 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
597 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
598 };
599 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
600 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
601 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
602 { 1, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
603 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
604 { 1, 2, 3, 102, 0 }, /* IEEE80211_MODE_FH */
605 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
606 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
607 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
608 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
609 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
610 };
611
612 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
613 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
614 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
615 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
616 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
617 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_FH */
618 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
619 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
620 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
621 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
622 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
623 };
624 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
625 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
626 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
627 { 2, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
628 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
629 { 2, 3, 4, 188, 0 }, /* IEEE80211_MODE_FH */
630 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
631 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
632 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
633 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
634 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
635 };
636 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
637 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
638 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
639 { 2, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
640 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
641 { 2, 2, 3, 102, 0 }, /* IEEE80211_MODE_FH */
642 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
643 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
644 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
645 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
646 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
647 };
648
649 void
650 ieee80211_wme_initparams(struct ieee80211com *ic)
651 {
652 struct ieee80211_wme_state *wme = &ic->ic_wme;
653 const paramType *pPhyParam, *pBssPhyParam;
654 struct wmeParams *wmep;
655 enum ieee80211_phymode mode;
656 int i;
657
658 if ((ic->ic_caps & IEEE80211_C_WME) == 0)
659 return;
660
661 /*
662 * Select mode; we can be called early in which case we
663 * always use auto mode. We know we'll be called when
664 * entering the RUN state with bsschan setup properly
665 * so state will eventually get set correctly
666 */
667 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
668 mode = ieee80211_chan2mode(ic->ic_bsschan);
669 else
670 mode = IEEE80211_MODE_AUTO;
671 for (i = 0; i < WME_NUM_AC; i++) {
672 switch (i) {
673 case WME_AC_BK:
674 pPhyParam = &phyParamForAC_BK[mode];
675 pBssPhyParam = &phyParamForAC_BK[mode];
676 break;
677 case WME_AC_VI:
678 pPhyParam = &phyParamForAC_VI[mode];
679 pBssPhyParam = &bssPhyParamForAC_VI[mode];
680 break;
681 case WME_AC_VO:
682 pPhyParam = &phyParamForAC_VO[mode];
683 pBssPhyParam = &bssPhyParamForAC_VO[mode];
684 break;
685 case WME_AC_BE:
686 default:
687 pPhyParam = &phyParamForAC_BE[mode];
688 pBssPhyParam = &bssPhyParamForAC_BE[mode];
689 break;
690 }
691
692 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
693 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
694 wmep->wmep_acm = pPhyParam->acm;
695 wmep->wmep_aifsn = pPhyParam->aifsn;
696 wmep->wmep_logcwmin = pPhyParam->logcwmin;
697 wmep->wmep_logcwmax = pPhyParam->logcwmax;
698 wmep->wmep_txopLimit = pPhyParam->txopLimit;
699 } else {
700 wmep->wmep_acm = pBssPhyParam->acm;
701 wmep->wmep_aifsn = pBssPhyParam->aifsn;
702 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
703 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
704 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
705
706 }
707 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
708 "%s: %s chan [acm %u aifsn %u log2(cwmin) %u "
709 "log2(cwmax) %u txpoLimit %u]\n", __func__
710 , ieee80211_wme_acnames[i]
711 , wmep->wmep_acm
712 , wmep->wmep_aifsn
713 , wmep->wmep_logcwmin
714 , wmep->wmep_logcwmax
715 , wmep->wmep_txopLimit
716 );
717
718 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
719 wmep->wmep_acm = pBssPhyParam->acm;
720 wmep->wmep_aifsn = pBssPhyParam->aifsn;
721 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
722 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
723 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
724 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
725 "%s: %s bss [acm %u aifsn %u log2(cwmin) %u "
726 "log2(cwmax) %u txpoLimit %u]\n", __func__
727 , ieee80211_wme_acnames[i]
728 , wmep->wmep_acm
729 , wmep->wmep_aifsn
730 , wmep->wmep_logcwmin
731 , wmep->wmep_logcwmax
732 , wmep->wmep_txopLimit
733 );
734 }
735 /* NB: check ic_bss to avoid NULL deref on initial attach */
736 if (ic->ic_bss != NULL) {
737 /*
738 * Calculate agressive mode switching threshold based
739 * on beacon interval. This doesn't need locking since
740 * we're only called before entering the RUN state at
741 * which point we start sending beacon frames.
742 */
743 wme->wme_hipri_switch_thresh =
744 (HIGH_PRI_SWITCH_THRESH * ic->ic_bss->ni_intval) / 100;
745 ieee80211_wme_updateparams(ic);
746 }
747 }
748
749 /*
750 * Update WME parameters for ourself and the BSS.
751 */
752 void
753 ieee80211_wme_updateparams_locked(struct ieee80211com *ic)
754 {
755 static const paramType phyParam[IEEE80211_MODE_MAX] = {
756 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_AUTO */
757 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11A */
758 { 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_11B */
759 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11G */
760 { 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_FH */
761 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_A */
762 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_G */
763 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_STURBO_A */
764 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NA */ /*XXXcheck*/
765 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NG */ /*XXXcheck*/
766 };
767 struct ieee80211_wme_state *wme = &ic->ic_wme;
768 const struct wmeParams *wmep;
769 struct wmeParams *chanp, *bssp;
770 enum ieee80211_phymode mode;
771 int i;
772
773 /* set up the channel access parameters for the physical device */
774 for (i = 0; i < WME_NUM_AC; i++) {
775 chanp = &wme->wme_chanParams.cap_wmeParams[i];
776 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
777 chanp->wmep_aifsn = wmep->wmep_aifsn;
778 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
779 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
780 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
781
782 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
783 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
784 chanp->wmep_aifsn = wmep->wmep_aifsn;
785 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
786 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
787 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
788 }
789
790 /*
791 * Select mode; we can be called early in which case we
792 * always use auto mode. We know we'll be called when
793 * entering the RUN state with bsschan setup properly
794 * so state will eventually get set correctly
795 */
796 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
797 mode = ieee80211_chan2mode(ic->ic_bsschan);
798 else
799 mode = IEEE80211_MODE_AUTO;
800
801 /*
802 * This implements agressive mode as found in certain
803 * vendors' AP's. When there is significant high
804 * priority (VI/VO) traffic in the BSS throttle back BE
805 * traffic by using conservative parameters. Otherwise
806 * BE uses agressive params to optimize performance of
807 * legacy/non-QoS traffic.
808 */
809 if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
810 (wme->wme_flags & WME_F_AGGRMODE) != 0) ||
811 (ic->ic_opmode == IEEE80211_M_STA &&
812 (ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
813 (ic->ic_flags & IEEE80211_F_WME) == 0) {
814 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
815 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
816
817 chanp->wmep_aifsn = bssp->wmep_aifsn = phyParam[mode].aifsn;
818 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
819 phyParam[mode].logcwmin;
820 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
821 phyParam[mode].logcwmax;
822 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
823 (ic->ic_flags & IEEE80211_F_BURST) ?
824 phyParam[mode].txopLimit : 0;
825 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
826 "%s: %s [acm %u aifsn %u log2(cwmin) %u "
827 "log2(cwmax) %u txpoLimit %u]\n", __func__
828 , ieee80211_wme_acnames[WME_AC_BE]
829 , chanp->wmep_acm
830 , chanp->wmep_aifsn
831 , chanp->wmep_logcwmin
832 , chanp->wmep_logcwmax
833 , chanp->wmep_txopLimit
834 );
835 }
836
837 if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
838 ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
839 static const uint8_t logCwMin[IEEE80211_MODE_MAX] = {
840 3, /* IEEE80211_MODE_AUTO */
841 3, /* IEEE80211_MODE_11A */
842 4, /* IEEE80211_MODE_11B */
843 3, /* IEEE80211_MODE_11G */
844 4, /* IEEE80211_MODE_FH */
845 3, /* IEEE80211_MODE_TURBO_A */
846 3, /* IEEE80211_MODE_TURBO_G */
847 3, /* IEEE80211_MODE_STURBO_A */
848 3, /* IEEE80211_MODE_11NA */
849 3, /* IEEE80211_MODE_11NG */
850 };
851 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
852 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
853
854 chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode];
855 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
856 "%s: %s log2(cwmin) %u\n", __func__
857 , ieee80211_wme_acnames[WME_AC_BE]
858 , chanp->wmep_logcwmin
859 );
860 }
861 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */
862 /*
863 * Arrange for a beacon update and bump the parameter
864 * set number so associated stations load the new values.
865 */
866 wme->wme_bssChanParams.cap_info =
867 (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
868 ieee80211_beacon_notify(ic, IEEE80211_BEACON_WME);
869 }
870
871 wme->wme_update(ic);
872
873 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
874 "%s: WME params updated, cap_info 0x%x\n", __func__,
875 ic->ic_opmode == IEEE80211_M_STA ?
876 wme->wme_wmeChanParams.cap_info :
877 wme->wme_bssChanParams.cap_info);
878 }
879
880 void
881 ieee80211_wme_updateparams(struct ieee80211com *ic)
882 {
883
884 if (ic->ic_caps & IEEE80211_C_WME) {
885 IEEE80211_BEACON_LOCK(ic);
886 ieee80211_wme_updateparams_locked(ic);
887 IEEE80211_BEACON_UNLOCK(ic);
888 }
889 }
890
891 /*
892 * Start a device. If this is the first vap running on the
893 * underlying device then we first bring it up.
894 */
895 int
896 ieee80211_init(struct ieee80211com *ic, int forcescan)
897 {
898
899 IEEE80211_DPRINTF(ic,
900 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
901 "%s\n", "start running");
902
903 /*
904 * Kick the 802.11 state machine as appropriate.
905 */
906 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) {
907 if (ic->ic_opmode == IEEE80211_M_STA) {
908 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
909 } else {
910 /*
911 * For monitor+wds modes there's nothing to do but
912 * start running. Otherwise, if this is the first
913 * vap to be brought up, start a scan which may be
914 * preempted if the station is locked to a particular
915 * channel.
916 */
917 if (ic->ic_opmode == IEEE80211_M_MONITOR ||
918 ic->ic_opmode == IEEE80211_M_WDS) {
919 ic->ic_state = IEEE80211_S_INIT; /* XXX*/
920 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
921 } else
922 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
923 }
924 }
925 return 0;
926 }
927
928 /*
929 * Switch between turbo and non-turbo operating modes.
930 * Use the specified channel flags to locate the new
931 * channel, update 802.11 state, and then call back into
932 * the driver to effect the change.
933 */
934 void
935 ieee80211_dturbo_switch(struct ieee80211com *ic, int newflags)
936 {
937 struct ieee80211_channel *chan;
938
939 chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags);
940 if (chan == NULL) { /* XXX should not happen */
941 IEEE80211_DPRINTF(ic, IEEE80211_MSG_SUPERG,
942 "%s: no channel with freq %u flags 0x%x\n",
943 __func__, ic->ic_bsschan->ic_freq, newflags);
944 return;
945 }
946
947 IEEE80211_DPRINTF(ic, IEEE80211_MSG_SUPERG,
948 "%s: %s -> %s (freq %u flags 0x%x)\n", __func__,
949 ieee80211_phymode_name[ieee80211_chan2mode(ic->ic_bsschan)],
950 ieee80211_phymode_name[ieee80211_chan2mode(chan)],
951 chan->ic_freq, chan->ic_flags);
952
953 ic->ic_bsschan = chan;
954 ic->ic_prevchan = ic->ic_curchan;
955 ic->ic_curchan = chan;
956 ic->ic_set_channel(ic);
957 /* NB: do not need to reset ERP state 'cuz we're in sta mode */
958 }
959
960 void
961 ieee80211_beacon_miss(struct ieee80211com *ic)
962 {
963
964 if (ic->ic_flags & IEEE80211_F_SCAN) {
965 /* XXX check ic_curchan != ic_bsschan? */
966 return;
967 }
968 IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
969 "%s\n", "beacon miss");
970
971 /*
972 * Our handling is only meaningful for stations that are
973 * associated; any other conditions else will be handled
974 * through different means (e.g. the tx timeout on mgt frames).
975 */
976 if (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN)
977 return;
978
979 if (++ic->ic_bmiss_count < ic->ic_bmiss_max) {
980 /*
981 * Send a directed probe req before falling back to a scan;
982 * if we receive a response ic_bmiss_count will be reset.
983 * Some cards mistakenly report beacon miss so this avoids
984 * the expensive scan if the ap is still there.
985 */
986 ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr,
987 ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid,
988 ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen,
989 ic->ic_opt_ie, ic->ic_opt_ie_len);
990 return;
991 }
992 ic->ic_bmiss_count = 0;
993 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
994 /*
995 * If we receive a beacon miss interrupt when using
996 * dynamic turbo, attempt to switch modes before
997 * reassociating.
998 */
999 if (IEEE80211_ATH_CAP(ic, ic->ic_bss, IEEE80211_NODE_TURBOP))
1000 ieee80211_dturbo_switch(ic,
1001 ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO);
1002 /*
1003 * Try to reassociate before scanning for a new ap.
1004 */
1005 ieee80211_new_state(ic, IEEE80211_S_ASSOC, 1);
1006 } else {
1007 /*
1008 * Somebody else is controlling state changes (e.g.
1009 * a user-mode app) don't do anything that would
1010 * confuse them; just drop into scan mode so they'll
1011 * notified of the state change and given control.
1012 */
1013 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
1014 }
1015 }
1016
1017 /*
1018 * Software beacon miss handling. Check if any beacons
1019 * were received in the last period. If not post a
1020 * beacon miss; otherwise reset the counter.
1021 */
1022 static void
1023 ieee80211_swbmiss(void *arg)
1024 {
1025 struct ieee80211com *ic = arg;
1026
1027 if (ic->ic_swbmiss_count == 0) {
1028 ieee80211_beacon_miss(ic);
1029 if (ic->ic_bmiss_count == 0) /* don't re-arm timer */
1030 return;
1031 } else
1032 ic->ic_swbmiss_count = 0;
1033 callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
1034 ieee80211_swbmiss, ic);
1035 }
1036
1037 static void
1038 sta_disassoc(void *arg, struct ieee80211_node *ni)
1039 {
1040 struct ieee80211com *ic = arg;
1041
1042 if (ni->ni_associd != 0) {
1043 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
1044 IEEE80211_REASON_ASSOC_LEAVE);
1045 ieee80211_node_leave(ic, ni);
1046 }
1047 }
1048
1049 static void
1050 sta_deauth(void *arg, struct ieee80211_node *ni)
1051 {
1052 struct ieee80211com *ic = arg;
1053
1054 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
1055 IEEE80211_REASON_ASSOC_LEAVE);
1056 }
1057
1058 /*
1059 * Handle deauth with reason. We retry only for
1060 * the cases where we might succeed. Otherwise
1061 * we downgrade the ap and scan.
1062 */
1063 static void
1064 sta_authretry(struct ieee80211com *ic, struct ieee80211_node *ni, int reason)
1065 {
1066 switch (reason) {
1067 case IEEE80211_STATUS_SUCCESS:
1068 case IEEE80211_STATUS_TIMEOUT:
1069 case IEEE80211_REASON_ASSOC_EXPIRE:
1070 case IEEE80211_REASON_NOT_AUTHED:
1071 case IEEE80211_REASON_NOT_ASSOCED:
1072 case IEEE80211_REASON_ASSOC_LEAVE:
1073 case IEEE80211_REASON_ASSOC_NOT_AUTHED:
1074 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_AUTH, 1);
1075 break;
1076 default:
1077 ieee80211_scan_assoc_fail(ic, ic->ic_bss->ni_macaddr, reason);
1078 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1079 ieee80211_check_scan(ic,
1080 IEEE80211_SCAN_ACTIVE,
1081 IEEE80211_SCAN_FOREVER,
1082 ic->ic_des_nssid, ic->ic_des_ssid);
1083 break;
1084 }
1085 }
1086
1087 static int
1088 ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1089 {
1090 struct ifnet *ifp = ic->ic_ifp;
1091 struct ieee80211_node *ni;
1092 enum ieee80211_state ostate;
1093
1094 ostate = ic->ic_state;
1095 IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
1096 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
1097 ic->ic_state = nstate; /* state transition */
1098 callout_stop(&ic->ic_mgtsend); /* XXX callout_drain */
1099 if (ostate != IEEE80211_S_SCAN)
1100 ieee80211_cancel_scan(ic); /* background scan */
1101 ni = ic->ic_bss; /* NB: no reference held */
1102 if (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)
1103 callout_stop(&ic->ic_swbmiss);
1104 switch (nstate) {
1105 case IEEE80211_S_INIT:
1106 switch (ostate) {
1107 case IEEE80211_S_INIT:
1108 break;
1109 case IEEE80211_S_RUN:
1110 switch (ic->ic_opmode) {
1111 case IEEE80211_M_STA:
1112 IEEE80211_SEND_MGMT(ic, ni,
1113 IEEE80211_FC0_SUBTYPE_DISASSOC,
1114 IEEE80211_REASON_ASSOC_LEAVE);
1115 ieee80211_sta_leave(ic, ni);
1116 break;
1117 case IEEE80211_M_HOSTAP:
1118 ieee80211_iterate_nodes(&ic->ic_sta,
1119 sta_disassoc, ic);
1120 break;
1121 default:
1122 break;
1123 }
1124 break;
1125 case IEEE80211_S_ASSOC:
1126 switch (ic->ic_opmode) {
1127 case IEEE80211_M_STA:
1128 IEEE80211_SEND_MGMT(ic, ni,
1129 IEEE80211_FC0_SUBTYPE_DEAUTH,
1130 IEEE80211_REASON_AUTH_LEAVE);
1131 break;
1132 case IEEE80211_M_HOSTAP:
1133 ieee80211_iterate_nodes(&ic->ic_sta,
1134 sta_deauth, ic);
1135 break;
1136 default:
1137 break;
1138 }
1139 break;
1140 case IEEE80211_S_SCAN:
1141 ieee80211_cancel_scan(ic);
1142 break;
1143 case IEEE80211_S_AUTH:
1144 break;
1145 default:
1146 break;
1147 }
1148 if (ostate != IEEE80211_S_INIT) {
1149 /* NB: optimize INIT -> INIT case */
1150 ieee80211_drain_ifq(&ic->ic_mgtq);
1151 ieee80211_reset_bss(ic);
1152 ieee80211_scan_flush(ic);
1153 }
1154 if (ic->ic_auth->ia_detach != NULL)
1155 ic->ic_auth->ia_detach(ic);
1156 break;
1157 case IEEE80211_S_SCAN:
1158 switch (ostate) {
1159 case IEEE80211_S_INIT:
1160 createibss:
1161 if ((ic->ic_opmode == IEEE80211_M_HOSTAP ||
1162 ic->ic_opmode == IEEE80211_M_IBSS ||
1163 ic->ic_opmode == IEEE80211_M_AHDEMO) &&
1164 ic->ic_des_chan != IEEE80211_CHAN_ANYC) {
1165 /*
1166 * Already have a channel; bypass the
1167 * scan and startup immediately. Because
1168 * of this explicitly sync the scanner state.
1169 */
1170 ieee80211_scan_update(ic);
1171 ieee80211_create_ibss(ic, ic->ic_des_chan);
1172 } else {
1173 ieee80211_check_scan(ic,
1174 IEEE80211_SCAN_ACTIVE |
1175 IEEE80211_SCAN_FLUSH,
1176 IEEE80211_SCAN_FOREVER,
1177 ic->ic_des_nssid, ic->ic_des_ssid);
1178 }
1179 break;
1180 case IEEE80211_S_SCAN:
1181 case IEEE80211_S_AUTH:
1182 case IEEE80211_S_ASSOC:
1183 /*
1184 * These can happen either because of a timeout
1185 * on an assoc/auth response or because of a
1186 * change in state that requires a reset. For
1187 * the former we're called with a non-zero arg
1188 * that is the cause for the failure; pass this
1189 * to the scan code so it can update state.
1190 * Otherwise trigger a new scan unless we're in
1191 * manual roaming mode in which case an application
1192 * must issue an explicit scan request.
1193 */
1194 if (arg != 0)
1195 ieee80211_scan_assoc_fail(ic,
1196 ic->ic_bss->ni_macaddr, arg);
1197 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1198 ieee80211_check_scan(ic,
1199 IEEE80211_SCAN_ACTIVE,
1200 IEEE80211_SCAN_FOREVER,
1201 ic->ic_des_nssid, ic->ic_des_ssid);
1202 break;
1203 case IEEE80211_S_RUN: /* beacon miss */
1204 if (ic->ic_opmode == IEEE80211_M_STA) {
1205 ieee80211_sta_leave(ic, ni);
1206 ic->ic_flags &= ~IEEE80211_F_SIBSS; /* XXX */
1207 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1208 ieee80211_check_scan(ic,
1209 IEEE80211_SCAN_ACTIVE,
1210 IEEE80211_SCAN_FOREVER,
1211 ic->ic_des_nssid,
1212 ic->ic_des_ssid);
1213 } else {
1214 ieee80211_iterate_nodes(&ic->ic_sta,
1215 sta_disassoc, ic);
1216 goto createibss;
1217 }
1218 break;
1219 default:
1220 break;
1221 }
1222 break;
1223 case IEEE80211_S_AUTH:
1224 KASSERT(ic->ic_opmode == IEEE80211_M_STA,
1225 ("switch to %s state when operating in mode %u",
1226 ieee80211_state_name[nstate], ic->ic_opmode));
1227 switch (ostate) {
1228 case IEEE80211_S_INIT:
1229 case IEEE80211_S_SCAN:
1230 IEEE80211_SEND_MGMT(ic, ni,
1231 IEEE80211_FC0_SUBTYPE_AUTH, 1);
1232 break;
1233 case IEEE80211_S_AUTH:
1234 case IEEE80211_S_ASSOC:
1235 switch (arg & 0xff) {
1236 case IEEE80211_FC0_SUBTYPE_AUTH:
1237 /* ??? */
1238 IEEE80211_SEND_MGMT(ic, ni,
1239 IEEE80211_FC0_SUBTYPE_AUTH, 2);
1240 break;
1241 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1242 sta_authretry(ic, ni, arg>>8);
1243 break;
1244 }
1245 break;
1246 case IEEE80211_S_RUN:
1247 switch (arg & 0xff) {
1248 case IEEE80211_FC0_SUBTYPE_AUTH:
1249 IEEE80211_SEND_MGMT(ic, ni,
1250 IEEE80211_FC0_SUBTYPE_AUTH, 2);
1251 ic->ic_state = ostate; /* stay RUN */
1252 break;
1253 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1254 ieee80211_sta_leave(ic, ni);
1255 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1256 /* try to reauth */
1257 IEEE80211_SEND_MGMT(ic, ni,
1258 IEEE80211_FC0_SUBTYPE_AUTH, 1);
1259 }
1260 break;
1261 }
1262 break;
1263 default:
1264 break;
1265 }
1266 break;
1267 case IEEE80211_S_ASSOC:
1268 KASSERT(ic->ic_opmode == IEEE80211_M_STA,
1269 ("switch to %s state when operating in mode %u",
1270 ieee80211_state_name[nstate], ic->ic_opmode));
1271 switch (ostate) {
1272 case IEEE80211_S_INIT:
1273 case IEEE80211_S_SCAN:
1274 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1275 "%s: invalid transition\n", __func__);
1276 break;
1277 case IEEE80211_S_AUTH:
1278 case IEEE80211_S_ASSOC:
1279 IEEE80211_SEND_MGMT(ic, ni,
1280 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
1281 break;
1282 case IEEE80211_S_RUN:
1283 ieee80211_sta_leave(ic, ni);
1284 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1285 IEEE80211_SEND_MGMT(ic, ni, arg ?
1286 IEEE80211_FC0_SUBTYPE_REASSOC_REQ :
1287 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
1288 }
1289 break;
1290 default:
1291 break;
1292 }
1293 break;
1294 case IEEE80211_S_RUN:
1295 if (ic->ic_flags & IEEE80211_F_WPA) {
1296 /* XXX validate prerequisites */
1297 }
1298 switch (ostate) {
1299 case IEEE80211_S_INIT:
1300 if (ic->ic_opmode == IEEE80211_M_MONITOR ||
1301 ic->ic_opmode == IEEE80211_M_WDS ||
1302 ic->ic_opmode == IEEE80211_M_HOSTAP) {
1303 /*
1304 * Already have a channel; bypass the
1305 * scan and startup immediately. Because
1306 * of this explicitly sync the scanner state.
1307 */
1308 ieee80211_scan_update(ic);
1309 ieee80211_create_ibss(ic,
1310 ieee80211_ht_adjust_channel(ic,
1311 ic->ic_curchan, ic->ic_flags_ext));
1312 break;
1313 }
1314 /* fall thru... */
1315 case IEEE80211_S_AUTH:
1316 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1317 "%s: invalid transition\n", __func__);
1318 /* fall thru... */
1319 case IEEE80211_S_RUN:
1320 break;
1321 case IEEE80211_S_SCAN: /* adhoc/hostap mode */
1322 case IEEE80211_S_ASSOC: /* infra mode */
1323 KASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates,
1324 ("%s: bogus xmit rate %u setup\n", __func__,
1325 ni->ni_txrate));
1326 #ifdef IEEE80211_DEBUG
1327 if (ieee80211_msg_debug(ic)) {
1328 if (ic->ic_opmode == IEEE80211_M_STA)
1329 if_printf(ifp, "associated ");
1330 else
1331 if_printf(ifp, "synchronized ");
1332 printf("with %s ssid ",
1333 ether_sprintf(ni->ni_bssid));
1334 ieee80211_print_essid(ic->ic_bss->ni_essid,
1335 ni->ni_esslen);
1336 printf(" channel %d start %uMb\n",
1337 ieee80211_chan2ieee(ic, ic->ic_curchan),
1338 IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
1339 }
1340 #endif
1341 if (ic->ic_opmode == IEEE80211_M_STA) {
1342 ieee80211_scan_assoc_success(ic,
1343 ni->ni_macaddr);
1344 ieee80211_notify_node_join(ic, ni,
1345 arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
1346 }
1347 if_start(ifp); /* XXX not authorized yet */
1348 break;
1349 default:
1350 break;
1351 }
1352 if (ostate != IEEE80211_S_RUN &&
1353 ic->ic_opmode == IEEE80211_M_STA &&
1354 (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)) {
1355 /*
1356 * Start s/w beacon miss timer for devices w/o
1357 * hardware support. We fudge a bit here since
1358 * we're doing this in software.
1359 */
1360 ic->ic_swbmiss_period = IEEE80211_TU_TO_TICKS(
1361 2 * ic->ic_bmissthreshold * ni->ni_intval);
1362 ic->ic_swbmiss_count = 0;
1363 callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
1364 ieee80211_swbmiss, ic);
1365 }
1366 /*
1367 * Start/stop the authenticator when operating as an
1368 * AP. We delay until here to allow configuration to
1369 * happen out of order.
1370 */
1371 if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
1372 ic->ic_auth->ia_attach != NULL) {
1373 /* XXX check failure */
1374 ic->ic_auth->ia_attach(ic);
1375 } else if (ic->ic_auth->ia_detach != NULL) {
1376 ic->ic_auth->ia_detach(ic);
1377 }
1378 /*
1379 * When 802.1x is not in use mark the port authorized
1380 * at this point so traffic can flow.
1381 */
1382 if (ni->ni_authmode != IEEE80211_AUTH_8021X)
1383 ieee80211_node_authorize(ni);
1384 /*
1385 * Enable inactivity processing.
1386 * XXX
1387 */
1388 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
1389 ieee80211_node_timeout, ic);
1390 break;
1391 default:
1392 break;
1393 }
1394 return 0;
1395 }
Cache object: 7fa3acb67e7648bc8c351b50038027dd
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