Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sys / net80211 / ieee80211_proto.c
blob3379a5417bc640f464fa7795a351c3de04fe330e
1 /* $NetBSD: ieee80211_proto.c,v 1.28 2006/11/16 01:33:41 christos Exp $ */
2 /*-
3 * Copyright (c) 2001 Atsushi Onoe
4 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
5 * All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * Alternatively, this software may be distributed under the terms of the
19 * GNU General Public License ("GPL") version 2 as published by the Free
20 * Software Foundation.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/cdefs.h>
35 #ifdef __FreeBSD__
36 __FBSDID("$FreeBSD: src/sys/net80211/ieee80211_proto.c,v 1.23 2005/08/10 16:22:29 sam Exp $");
37 #endif
38 #ifdef __NetBSD__
39 __KERNEL_RCSID(0, "$NetBSD: ieee80211_proto.c,v 1.28 2006/11/16 01:33:41 christos Exp $");
40 #endif
43 * IEEE 802.11 protocol support.
46 #include "opt_inet.h"
48 #include <sys/param.h>
49 #include <sys/kernel.h>
50 #include <sys/systm.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54 #include <sys/endian.h>
55 #include <sys/errno.h>
56 #include <sys/proc.h>
57 #include <sys/sysctl.h>
59 #include <net/if.h>
60 #include <net/if_media.h>
61 #include <net/if_arp.h>
62 #include <net/if_ether.h>
63 #include <net/if_llc.h>
65 #include <net80211/ieee80211_netbsd.h>
66 #include <net80211/ieee80211_var.h>
68 #include <net/bpf.h>
70 #ifdef INET
71 #include <netinet/in.h>
72 #include <net/if_ether.h>
73 #endif
75 #include <net/route.h>
76 /* XXX tunables */
77 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
78 #define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
80 #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
82 const char *ieee80211_mgt_subtype_name[] = {
83 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
84 "probe_req", "probe_resp", "reserved#6", "reserved#7",
85 "beacon", "atim", "disassoc", "auth",
86 "deauth", "reserved#13", "reserved#14", "reserved#15"
88 const char *ieee80211_ctl_subtype_name[] = {
89 "reserved#0", "reserved#1", "reserved#2", "reserved#3",
90 "reserved#3", "reserved#5", "reserved#6", "reserved#7",
91 "reserved#8", "reserved#9", "ps_poll", "rts",
92 "cts", "ack", "cf_end", "cf_end_ack"
94 const char *ieee80211_state_name[IEEE80211_S_MAX] = {
95 "INIT", /* IEEE80211_S_INIT */
96 "SCAN", /* IEEE80211_S_SCAN */
97 "AUTH", /* IEEE80211_S_AUTH */
98 "ASSOC", /* IEEE80211_S_ASSOC */
99 "RUN" /* IEEE80211_S_RUN */
101 const char *ieee80211_wme_acnames[] = {
102 "WME_AC_BE",
103 "WME_AC_BK",
104 "WME_AC_VI",
105 "WME_AC_VO",
106 "WME_UPSD",
109 static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
111 void
112 ieee80211_proto_attach(struct ieee80211com *ic)
114 struct ifnet *ifp = ic->ic_ifp;
116 /* XXX room for crypto */
117 ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
119 ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
120 ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
121 ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
122 ic->ic_bmiss_max = IEEE80211_BMISS_MAX;
123 ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
124 ic->ic_protmode = IEEE80211_PROT_CTSONLY;
125 ic->ic_roaming = IEEE80211_ROAMING_AUTO;
127 ic->ic_wme.wme_hipri_switch_hysteresis =
128 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
130 /* protocol state change handler */
131 ic->ic_newstate = ieee80211_newstate;
133 /* initialize management frame handlers */
134 ic->ic_recv_mgmt = ieee80211_recv_mgmt;
135 ic->ic_send_mgmt = ieee80211_send_mgmt;
138 void
139 ieee80211_proto_detach(struct ieee80211com *ic)
143 * This should not be needed as we detach when reseting
144 * the state but be conservative here since the
145 * authenticator may do things like spawn kernel threads.
147 if (ic->ic_auth->ia_detach)
148 ic->ic_auth->ia_detach(ic);
150 ieee80211_drain_ifq(&ic->ic_mgtq);
153 * Detach any ACL'ator.
155 if (ic->ic_acl != NULL)
156 ic->ic_acl->iac_detach(ic);
160 * Simple-minded authenticator module support.
163 #define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1)
164 /* XXX well-known names */
165 static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
166 "wlan_internal", /* IEEE80211_AUTH_NONE */
167 "wlan_internal", /* IEEE80211_AUTH_OPEN */
168 "wlan_internal", /* IEEE80211_AUTH_SHARED */
169 "wlan_xauth", /* IEEE80211_AUTH_8021X */
170 "wlan_internal", /* IEEE80211_AUTH_AUTO */
171 "wlan_xauth", /* IEEE80211_AUTH_WPA */
173 static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
175 static const struct ieee80211_authenticator auth_internal = {
176 .ia_name = "wlan_internal",
177 .ia_attach = NULL,
178 .ia_detach = NULL,
179 .ia_node_join = NULL,
180 .ia_node_leave = NULL,
184 * Setup internal authenticators once; they are never unregistered.
186 static void
187 ieee80211_auth_setup(void)
189 ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
190 ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
191 ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
194 const struct ieee80211_authenticator *
195 ieee80211_authenticator_get(int auth)
197 static int initialized = 0;
198 if (!initialized) {
199 ieee80211_auth_setup();
200 initialized = 1;
202 if (auth >= IEEE80211_AUTH_MAX)
203 return NULL;
204 if (authenticators[auth] == NULL)
205 ieee80211_load_module(auth_modnames[auth]);
206 return authenticators[auth];
209 void
210 ieee80211_authenticator_register(int type,
211 const struct ieee80211_authenticator *auth)
213 if (type >= IEEE80211_AUTH_MAX)
214 return;
215 authenticators[type] = auth;
218 void
219 ieee80211_authenticator_unregister(int type)
222 if (type >= IEEE80211_AUTH_MAX)
223 return;
224 authenticators[type] = NULL;
228 * Very simple-minded ACL module support.
230 /* XXX just one for now */
231 static const struct ieee80211_aclator *acl = NULL;
233 void
234 ieee80211_aclator_register(const struct ieee80211_aclator *iac)
236 printf("wlan: %s acl policy registered\n", iac->iac_name);
237 acl = iac;
240 void
241 ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
243 if (acl == iac)
244 acl = NULL;
245 printf("wlan: %s acl policy unregistered\n", iac->iac_name);
248 const struct ieee80211_aclator *
249 ieee80211_aclator_get(const char *name)
251 if (acl == NULL)
252 ieee80211_load_module("wlan_acl");
253 return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
256 void
257 ieee80211_print_essid(const u_int8_t *essid, int len)
259 const u_int8_t *p;
260 int i;
262 if (len > IEEE80211_NWID_LEN)
263 len = IEEE80211_NWID_LEN;
264 /* determine printable or not */
265 for (i = 0, p = essid; i < len; i++, p++) {
266 if (*p < ' ' || *p > 0x7e)
267 break;
269 if (i == len) {
270 printf("\"");
271 for (i = 0, p = essid; i < len; i++, p++)
272 printf("%c", *p);
273 printf("\"");
274 } else {
275 printf("0x");
276 for (i = 0, p = essid; i < len; i++, p++)
277 printf("%02x", *p);
281 void
282 ieee80211_dump_pkt(const u_int8_t *buf, int len, int rate, int rssi)
284 const struct ieee80211_frame *wh;
285 int i;
287 wh = (const struct ieee80211_frame *)buf;
288 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
289 case IEEE80211_FC1_DIR_NODS:
290 printf("NODS %s", ether_sprintf(wh->i_addr2));
291 printf("->%s", ether_sprintf(wh->i_addr1));
292 printf("(%s)", ether_sprintf(wh->i_addr3));
293 break;
294 case IEEE80211_FC1_DIR_TODS:
295 printf("TODS %s", ether_sprintf(wh->i_addr2));
296 printf("->%s", ether_sprintf(wh->i_addr3));
297 printf("(%s)", ether_sprintf(wh->i_addr1));
298 break;
299 case IEEE80211_FC1_DIR_FROMDS:
300 printf("FRDS %s", ether_sprintf(wh->i_addr3));
301 printf("->%s", ether_sprintf(wh->i_addr1));
302 printf("(%s)", ether_sprintf(wh->i_addr2));
303 break;
304 case IEEE80211_FC1_DIR_DSTODS:
305 printf("DSDS %s", ether_sprintf((const u_int8_t *)&wh[1]));
306 printf("->%s", ether_sprintf(wh->i_addr3));
307 printf("(%s", ether_sprintf(wh->i_addr2));
308 printf("->%s)", ether_sprintf(wh->i_addr1));
309 break;
311 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
312 case IEEE80211_FC0_TYPE_DATA:
313 printf(" data");
314 break;
315 case IEEE80211_FC0_TYPE_MGT:
316 printf(" %s", ieee80211_mgt_subtype_name[
317 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
318 >> IEEE80211_FC0_SUBTYPE_SHIFT]);
319 break;
320 default:
321 printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
322 break;
324 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
325 printf(" WEP [IV");
326 for (i = 0; i < IEEE80211_WEP_IVLEN; i++)
327 printf(" %.02x", buf[sizeof(*wh)+i]);
328 printf(" KID %u]", buf[sizeof(*wh)+i] >> 6);
330 if (rate >= 0)
331 printf(" %dM", rate / 2);
332 if (rssi >= 0)
333 printf(" +%d", rssi);
334 printf("\n");
335 if (len > 0) {
336 for (i = 0; i < len; i++) {
337 if ((i & 1) == 0)
338 printf(" ");
339 printf("%02x", buf[i]);
341 printf("\n");
346 ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
348 #define RV(v) ((v) & IEEE80211_RATE_VAL)
349 struct ieee80211com *ic = ni->ni_ic;
350 int i, j, ignore, error;
351 int okrate, badrate, fixedrate;
352 struct ieee80211_rateset *srs, *nrs;
353 u_int8_t r;
356 * If the fixed rate check was requested but no
357 * fixed has been defined then just remove it.
359 if ((flags & IEEE80211_F_DOFRATE) &&
360 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)
361 flags &= ~IEEE80211_F_DOFRATE;
362 error = 0;
363 okrate = badrate = fixedrate = 0;
364 srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
365 nrs = &ni->ni_rates;
366 for (i = 0; i < nrs->rs_nrates; ) {
367 ignore = 0;
368 if (flags & IEEE80211_F_DOSORT) {
370 * Sort rates.
372 for (j = i + 1; j < nrs->rs_nrates; j++) {
373 if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
374 r = nrs->rs_rates[i];
375 nrs->rs_rates[i] = nrs->rs_rates[j];
376 nrs->rs_rates[j] = r;
380 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
381 badrate = r;
382 if (flags & IEEE80211_F_DOFRATE) {
384 * Check any fixed rate is included.
386 if (r == RV(srs->rs_rates[ic->ic_fixed_rate]))
387 fixedrate = r;
389 if (flags & IEEE80211_F_DONEGO) {
391 * Check against supported rates.
393 for (j = 0; j < srs->rs_nrates; j++) {
394 if (r == RV(srs->rs_rates[j])) {
396 * Overwrite with the supported rate
397 * value so any basic rate bit is set.
398 * This insures that response we send
399 * to stations have the necessary basic
400 * rate bit set.
402 nrs->rs_rates[i] = srs->rs_rates[j];
403 break;
406 if (j == srs->rs_nrates) {
408 * A rate in the node's rate set is not
409 * supported. If this is a basic rate and we
410 * are operating as an AP then this is an error.
411 * Otherwise we just discard/ignore the rate.
412 * Note that this is important for 11b stations
413 * when they want to associate with an 11g AP.
415 #ifndef IEEE80211_NO_HOSTAP
416 if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
417 (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
418 error++;
419 #endif /* !IEEE80211_NO_HOSTAP */
420 ignore++;
423 if (flags & IEEE80211_F_DODEL) {
425 * Delete unacceptable rates.
427 if (ignore) {
428 nrs->rs_nrates--;
429 for (j = i; j < nrs->rs_nrates; j++)
430 nrs->rs_rates[j] = nrs->rs_rates[j + 1];
431 nrs->rs_rates[j] = 0;
432 continue;
435 if (!ignore) {
436 okrate = nrs->rs_rates[i];
437 ni->ni_txrate = i;
439 i++;
441 if (okrate == 0 || error != 0 ||
442 ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
443 return badrate | IEEE80211_RATE_BASIC;
444 else
445 return RV(okrate);
446 #undef RV
450 * Reset 11g-related state.
452 void
453 ieee80211_reset_erp(struct ieee80211com *ic)
455 ic->ic_flags &= ~IEEE80211_F_USEPROT;
456 ic->ic_nonerpsta = 0;
457 ic->ic_longslotsta = 0;
459 * Short slot time is enabled only when operating in 11g
460 * and not in an IBSS. We must also honor whether or not
461 * the driver is capable of doing it.
463 ieee80211_set_shortslottime(ic,
464 ic->ic_curmode == IEEE80211_MODE_11A ||
465 (ic->ic_curmode == IEEE80211_MODE_11G &&
466 ic->ic_opmode == IEEE80211_M_HOSTAP &&
467 (ic->ic_caps & IEEE80211_C_SHSLOT)));
469 * Set short preamble and ERP barker-preamble flags.
471 if (ic->ic_curmode == IEEE80211_MODE_11A ||
472 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
473 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
474 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
475 } else {
476 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
477 ic->ic_flags |= IEEE80211_F_USEBARKER;
482 * Set the short slot time state and notify the driver.
484 void
485 ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
487 if (onoff)
488 ic->ic_flags |= IEEE80211_F_SHSLOT;
489 else
490 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
491 /* notify driver */
492 if (ic->ic_updateslot != NULL)
493 ic->ic_updateslot(ic->ic_ifp);
497 * Check if the specified rate set supports ERP.
498 * NB: the rate set is assumed to be sorted.
501 ieee80211_iserp_rateset(struct ieee80211com *ic,
502 struct ieee80211_rateset *rs)
504 #define N(a) (sizeof(a) / sizeof(a[0]))
505 static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
506 int i, j;
508 if (rs->rs_nrates < N(rates))
509 return 0;
510 for (i = 0; i < N(rates); i++) {
511 for (j = 0; j < rs->rs_nrates; j++) {
512 int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
513 if (rates[i] == r)
514 goto next;
515 if (r > rates[i])
516 return 0;
518 return 0;
519 next:
522 return 1;
523 #undef N
527 * Mark the basic rates for the 11g rate table based on the
528 * operating mode. For real 11g we mark all the 11b rates
529 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only
530 * 11b rates. There's also a pseudo 11a-mode used to mark only
531 * the basic OFDM rates.
533 void
534 ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
536 static const struct ieee80211_rateset basic[] = {
537 { .rs_nrates = 0 }, /* IEEE80211_MODE_AUTO */
538 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */
539 { 2, { 2, 4 } }, /* IEEE80211_MODE_11B */
540 { 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G (mixed b/g) */
541 { .rs_nrates = 0 }, /* IEEE80211_MODE_FH */
542 /* IEEE80211_MODE_PUREG (not yet) */
543 { 7, { 2, 4, 11, 22, 12, 24, 48 } },
545 int i, j;
547 for (i = 0; i < rs->rs_nrates; i++) {
548 rs->rs_rates[i] &= IEEE80211_RATE_VAL;
549 for (j = 0; j < basic[mode].rs_nrates; j++)
550 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
551 rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
552 break;
558 * WME protocol support. The following parameters come from the spec.
560 typedef struct phyParamType {
561 u_int8_t aifsn;
562 u_int8_t logcwmin;
563 u_int8_t logcwmax;
564 u_int16_t txopLimit;
565 u_int8_t acm;
566 } paramType;
568 static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
569 { 3, 4, 6, 0, 0, }, /* IEEE80211_MODE_AUTO */
570 { 3, 4, 6, 0, 0, }, /* IEEE80211_MODE_11A */
571 { 3, 5, 7, 0, 0, }, /* IEEE80211_MODE_11B */
572 { 3, 4, 6, 0, 0, }, /* IEEE80211_MODE_11G */
573 { 3, 5, 7, 0, 0, }, /* IEEE80211_MODE_FH */
574 { 2, 3, 5, 0, 0, }, /* IEEE80211_MODE_TURBO_A */
575 { 2, 3, 5, 0, 0, }, /* IEEE80211_MODE_TURBO_G */
577 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
578 { 7, 4, 10, 0, 0, }, /* IEEE80211_MODE_AUTO */
579 { 7, 4, 10, 0, 0, }, /* IEEE80211_MODE_11A */
580 { 7, 5, 10, 0, 0, }, /* IEEE80211_MODE_11B */
581 { 7, 4, 10, 0, 0, }, /* IEEE80211_MODE_11G */
582 { 7, 5, 10, 0, 0, }, /* IEEE80211_MODE_FH */
583 { 7, 3, 10, 0, 0, }, /* IEEE80211_MODE_TURBO_A */
584 { 7, 3, 10, 0, 0, }, /* IEEE80211_MODE_TURBO_G */
586 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
587 { 1, 3, 4, 94, 0, }, /* IEEE80211_MODE_AUTO */
588 { 1, 3, 4, 94, 0, }, /* IEEE80211_MODE_11A */
589 { 1, 4, 5, 188, 0, }, /* IEEE80211_MODE_11B */
590 { 1, 3, 4, 94, 0, }, /* IEEE80211_MODE_11G */
591 { 1, 4, 5, 188, 0, }, /* IEEE80211_MODE_FH */
592 { 1, 2, 3, 94, 0, }, /* IEEE80211_MODE_TURBO_A */
593 { 1, 2, 3, 94, 0, }, /* IEEE80211_MODE_TURBO_G */
595 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
596 { 1, 2, 3, 47, 0, }, /* IEEE80211_MODE_AUTO */
597 { 1, 2, 3, 47, 0, }, /* IEEE80211_MODE_11A */
598 { 1, 3, 4, 102, 0, }, /* IEEE80211_MODE_11B */
599 { 1, 2, 3, 47, 0, }, /* IEEE80211_MODE_11G */
600 { 1, 3, 4, 102, 0, }, /* IEEE80211_MODE_FH */
601 { 1, 2, 2, 47, 0, }, /* IEEE80211_MODE_TURBO_A */
602 { 1, 2, 2, 47, 0, }, /* IEEE80211_MODE_TURBO_G */
605 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
606 { 3, 4, 10, 0, 0, }, /* IEEE80211_MODE_AUTO */
607 { 3, 4, 10, 0, 0, }, /* IEEE80211_MODE_11A */
608 { 3, 5, 10, 0, 0, }, /* IEEE80211_MODE_11B */
609 { 3, 4, 10, 0, 0, }, /* IEEE80211_MODE_11G */
610 { 3, 5, 10, 0, 0, }, /* IEEE80211_MODE_FH */
611 { 2, 3, 10, 0, 0, }, /* IEEE80211_MODE_TURBO_A */
612 { 2, 3, 10, 0, 0, }, /* IEEE80211_MODE_TURBO_G */
614 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
615 { 2, 3, 4, 94, 0, }, /* IEEE80211_MODE_AUTO */
616 { 2, 3, 4, 94, 0, }, /* IEEE80211_MODE_11A */
617 { 2, 4, 5, 188, 0, }, /* IEEE80211_MODE_11B */
618 { 2, 3, 4, 94, 0, }, /* IEEE80211_MODE_11G */
619 { 2, 4, 5, 188, 0, }, /* IEEE80211_MODE_FH */
620 { 2, 2, 3, 94, 0, }, /* IEEE80211_MODE_TURBO_A */
621 { 2, 2, 3, 94, 0, }, /* IEEE80211_MODE_TURBO_G */
623 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
624 { 2, 2, 3, 47, 0, }, /* IEEE80211_MODE_AUTO */
625 { 2, 2, 3, 47, 0, }, /* IEEE80211_MODE_11A */
626 { 2, 3, 4, 102, 0, }, /* IEEE80211_MODE_11B */
627 { 2, 2, 3, 47, 0, }, /* IEEE80211_MODE_11G */
628 { 2, 3, 4, 102, 0, }, /* IEEE80211_MODE_FH */
629 { 1, 2, 2, 47, 0, }, /* IEEE80211_MODE_TURBO_A */
630 { 1, 2, 2, 47, 0, }, /* IEEE80211_MODE_TURBO_G */
633 void
634 ieee80211_wme_initparams(struct ieee80211com *ic)
636 struct ieee80211_wme_state *wme = &ic->ic_wme;
637 const paramType *pPhyParam, *pBssPhyParam;
638 struct wmeParams *wmep;
639 int i;
641 if ((ic->ic_caps & IEEE80211_C_WME) == 0)
642 return;
644 for (i = 0; i < WME_NUM_AC; i++) {
645 switch (i) {
646 case WME_AC_BK:
647 pPhyParam = &phyParamForAC_BK[ic->ic_curmode];
648 pBssPhyParam = &phyParamForAC_BK[ic->ic_curmode];
649 break;
650 case WME_AC_VI:
651 pPhyParam = &phyParamForAC_VI[ic->ic_curmode];
652 pBssPhyParam = &bssPhyParamForAC_VI[ic->ic_curmode];
653 break;
654 case WME_AC_VO:
655 pPhyParam = &phyParamForAC_VO[ic->ic_curmode];
656 pBssPhyParam = &bssPhyParamForAC_VO[ic->ic_curmode];
657 break;
658 case WME_AC_BE:
659 default:
660 pPhyParam = &phyParamForAC_BE[ic->ic_curmode];
661 pBssPhyParam = &bssPhyParamForAC_BE[ic->ic_curmode];
662 break;
665 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
666 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
667 wmep->wmep_acm = pPhyParam->acm;
668 wmep->wmep_aifsn = pPhyParam->aifsn;
669 wmep->wmep_logcwmin = pPhyParam->logcwmin;
670 wmep->wmep_logcwmax = pPhyParam->logcwmax;
671 wmep->wmep_txopLimit = pPhyParam->txopLimit;
672 } else {
673 wmep->wmep_acm = pBssPhyParam->acm;
674 wmep->wmep_aifsn = pBssPhyParam->aifsn;
675 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
676 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
677 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
680 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
681 "%s: %s chan [acm %u aifsn %u log2(cwmin) %u "
682 "log2(cwmax) %u txpoLimit %u]\n", __func__
683 , ieee80211_wme_acnames[i]
684 , wmep->wmep_acm
685 , wmep->wmep_aifsn
686 , wmep->wmep_logcwmin
687 , wmep->wmep_logcwmax
688 , wmep->wmep_txopLimit
691 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
692 wmep->wmep_acm = pBssPhyParam->acm;
693 wmep->wmep_aifsn = pBssPhyParam->aifsn;
694 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
695 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
696 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
697 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
698 "%s: %s bss [acm %u aifsn %u log2(cwmin) %u "
699 "log2(cwmax) %u txpoLimit %u]\n", __func__
700 , ieee80211_wme_acnames[i]
701 , wmep->wmep_acm
702 , wmep->wmep_aifsn
703 , wmep->wmep_logcwmin
704 , wmep->wmep_logcwmax
705 , wmep->wmep_txopLimit
708 /* NB: check ic_bss to avoid NULL deref on initial attach */
709 if (ic->ic_bss != NULL) {
711 * Calculate agressive mode switching threshold based
712 * on beacon interval. This doesn't need locking since
713 * we're only called before entering the RUN state at
714 * which point we start sending beacon frames.
716 wme->wme_hipri_switch_thresh =
717 (HIGH_PRI_SWITCH_THRESH * ic->ic_bss->ni_intval) / 100;
718 ieee80211_wme_updateparams(ic);
723 * Update WME parameters for ourself and the BSS.
725 void
726 ieee80211_wme_updateparams_locked(struct ieee80211com *ic)
728 static const paramType phyParam[IEEE80211_MODE_MAX] = {
729 { 2, 4, 10, 64, 0, }, /* IEEE80211_MODE_AUTO */
730 { 2, 4, 10, 64, 0, }, /* IEEE80211_MODE_11A */
731 { 2, 5, 10, 64, 0, }, /* IEEE80211_MODE_11B */
732 { 2, 4, 10, 64, 0, }, /* IEEE80211_MODE_11G */
733 { 2, 5, 10, 64, 0, }, /* IEEE80211_MODE_FH */
734 { 1, 3, 10, 64, 0, }, /* IEEE80211_MODE_TURBO_A */
735 { 1, 3, 10, 64, 0, }, /* IEEE80211_MODE_TURBO_G */
737 struct ieee80211_wme_state *wme = &ic->ic_wme;
738 const struct wmeParams *wmep;
739 struct wmeParams *chanp, *bssp;
740 int i;
742 /* set up the channel access parameters for the physical device */
743 for (i = 0; i < WME_NUM_AC; i++) {
744 chanp = &wme->wme_chanParams.cap_wmeParams[i];
745 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
746 chanp->wmep_aifsn = wmep->wmep_aifsn;
747 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
748 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
749 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
751 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
752 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
753 chanp->wmep_aifsn = wmep->wmep_aifsn;
754 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
755 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
756 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
760 * This implements agressive mode as found in certain
761 * vendors' AP's. When there is significant high
762 * priority (VI/VO) traffic in the BSS throttle back BE
763 * traffic by using conservative parameters. Otherwise
764 * BE uses agressive params to optimize performance of
765 * legacy/non-QoS traffic.
767 if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
768 (wme->wme_flags & WME_F_AGGRMODE) == 0) ||
769 (ic->ic_opmode != IEEE80211_M_HOSTAP &&
770 (ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
771 (ic->ic_flags & IEEE80211_F_WME) == 0) {
772 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
773 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
775 chanp->wmep_aifsn = bssp->wmep_aifsn =
776 phyParam[ic->ic_curmode].aifsn;
777 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
778 phyParam[ic->ic_curmode].logcwmin;
779 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
780 phyParam[ic->ic_curmode].logcwmax;
781 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
782 (ic->ic_caps & IEEE80211_C_BURST) ?
783 phyParam[ic->ic_curmode].txopLimit : 0;
784 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
785 "%s: %s [acm %u aifsn %u log2(cwmin) %u "
786 "log2(cwmax) %u txpoLimit %u]\n", __func__
787 , ieee80211_wme_acnames[WME_AC_BE]
788 , chanp->wmep_acm
789 , chanp->wmep_aifsn
790 , chanp->wmep_logcwmin
791 , chanp->wmep_logcwmax
792 , chanp->wmep_txopLimit
796 #ifndef IEEE80211_NO_HOSTAP
797 if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
798 ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) == 0) {
799 static const u_int8_t logCwMin[IEEE80211_MODE_MAX] = {
800 3, /* IEEE80211_MODE_AUTO */
801 3, /* IEEE80211_MODE_11A */
802 4, /* IEEE80211_MODE_11B */
803 3, /* IEEE80211_MODE_11G */
804 4, /* IEEE80211_MODE_FH */
805 3, /* IEEE80211_MODE_TURBO_A */
806 3, /* IEEE80211_MODE_TURBO_G */
808 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
809 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
811 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
812 logCwMin[ic->ic_curmode];
813 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
814 "%s: %s log2(cwmin) %u\n", __func__
815 , ieee80211_wme_acnames[WME_AC_BE]
816 , chanp->wmep_logcwmin
819 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */
821 * Arrange for a beacon update and bump the parameter
822 * set number so associated stations load the new values.
824 wme->wme_bssChanParams.cap_info =
825 (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
826 ic->ic_flags |= IEEE80211_F_WMEUPDATE;
828 #endif /* !IEEE80211_NO_HOSTAP */
830 wme->wme_update(ic);
832 IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
833 "%s: WME params updated, cap_info 0x%x\n", __func__,
834 ic->ic_opmode == IEEE80211_M_STA ?
835 wme->wme_wmeChanParams.cap_info :
836 wme->wme_bssChanParams.cap_info);
839 void
840 ieee80211_wme_updateparams(struct ieee80211com *ic)
843 if (ic->ic_caps & IEEE80211_C_WME) {
844 IEEE80211_BEACON_LOCK(ic);
845 ieee80211_wme_updateparams_locked(ic);
846 IEEE80211_BEACON_UNLOCK(ic);
850 #ifndef IEEE80211_NO_HOSTAP
851 static void
852 sta_disassoc(void *arg, struct ieee80211_node *ni)
854 struct ieee80211com *ic = arg;
856 if (ni->ni_associd != 0) {
857 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
858 IEEE80211_REASON_ASSOC_LEAVE);
859 ieee80211_node_leave(ic, ni);
862 #endif /* !IEEE80211_NO_HOSTAP */
864 void
865 ieee80211_beacon_miss(struct ieee80211com *ic)
868 if (ic->ic_flags & IEEE80211_F_SCAN) {
869 /* XXX check ic_curchan != ic_bsschan? */
870 return;
872 IEEE80211_DPRINTF(ic,
873 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
874 "%s\n", "beacon miss");
877 * Our handling is only meaningful for stations that are
878 * associated; any other conditions else will be handled
879 * through different means (e.g. the tx timeout on mgt frames).
881 if (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN)
882 return;
884 if (++ic->ic_bmiss_count < ic->ic_bmiss_max) {
886 * Send a directed probe req before falling back to a scan;
887 * if we receive a response ic_bmiss_count will be reset.
888 * Some cards mistakenly report beacon miss so this avoids
889 * the expensive scan if the ap is still there.
891 ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr,
892 ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid,
893 ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen,
894 ic->ic_opt_ie, ic->ic_opt_ie_len);
895 return;
897 ic->ic_bmiss_count = 0;
898 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
901 #ifndef IEEE80211_NO_HOSTAP
902 static void
903 sta_deauth(void *arg, struct ieee80211_node *ni)
905 struct ieee80211com *ic = arg;
907 IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
908 IEEE80211_REASON_ASSOC_LEAVE);
910 #endif /* !IEEE80211_NO_HOSTAP */
912 static int
913 ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
915 struct ifnet *ifp = ic->ic_ifp;
916 struct ieee80211_node *ni;
917 enum ieee80211_state ostate;
919 ostate = ic->ic_state;
920 IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
921 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
922 ic->ic_state = nstate; /* state transition */
923 ni = ic->ic_bss; /* NB: no reference held */
924 switch (nstate) {
925 case IEEE80211_S_INIT:
926 switch (ostate) {
927 case IEEE80211_S_INIT:
928 break;
929 case IEEE80211_S_RUN:
930 switch (ic->ic_opmode) {
931 case IEEE80211_M_STA:
932 IEEE80211_SEND_MGMT(ic, ni,
933 IEEE80211_FC0_SUBTYPE_DISASSOC,
934 IEEE80211_REASON_ASSOC_LEAVE);
935 ieee80211_sta_leave(ic, ni);
936 break;
937 case IEEE80211_M_HOSTAP:
938 #ifndef IEEE80211_NO_HOSTAP
939 ieee80211_iterate_nodes(&ic->ic_sta,
940 sta_disassoc, ic);
941 #endif /* !IEEE80211_NO_HOSTAP */
942 break;
943 default:
944 break;
946 goto reset;
947 case IEEE80211_S_ASSOC:
948 switch (ic->ic_opmode) {
949 case IEEE80211_M_STA:
950 IEEE80211_SEND_MGMT(ic, ni,
951 IEEE80211_FC0_SUBTYPE_DEAUTH,
952 IEEE80211_REASON_AUTH_LEAVE);
953 break;
954 case IEEE80211_M_HOSTAP:
955 #ifndef IEEE80211_NO_HOSTAP
956 ieee80211_iterate_nodes(&ic->ic_sta,
957 sta_deauth, ic);
958 #endif /* !IEEE80211_NO_HOSTAP */
959 break;
960 default:
961 break;
963 goto reset;
964 case IEEE80211_S_SCAN:
965 ieee80211_cancel_scan(ic);
966 goto reset;
967 case IEEE80211_S_AUTH:
968 reset:
969 ic->ic_mgt_timer = 0;
970 ieee80211_drain_ifq(&ic->ic_mgtq);
971 ieee80211_reset_bss(ic);
972 break;
974 if (ic->ic_auth->ia_detach != NULL)
975 ic->ic_auth->ia_detach(ic);
976 break;
977 case IEEE80211_S_SCAN:
978 switch (ostate) {
979 case IEEE80211_S_INIT:
980 if ((ic->ic_opmode == IEEE80211_M_HOSTAP ||
981 ic->ic_opmode == IEEE80211_M_IBSS ||
982 ic->ic_opmode == IEEE80211_M_AHDEMO) &&
983 ic->ic_des_chan != IEEE80211_CHAN_ANYC) {
985 * AP operation and we already have a channel;
986 * bypass the scan and startup immediately.
988 ieee80211_create_ibss(ic, ic->ic_des_chan);
989 } else {
990 ieee80211_begin_scan(ic, arg);
992 break;
993 case IEEE80211_S_SCAN:
995 * Scan next. If doing an active scan probe
996 * for the requested ap (if any).
998 if (ic->ic_flags & IEEE80211_F_ASCAN)
999 ieee80211_probe_curchan(ic, 0);
1000 break;
1001 case IEEE80211_S_RUN:
1002 /* beacon miss */
1003 IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE,
1004 "no recent beacons from %s; rescanning\n",
1005 ether_sprintf(ic->ic_bss->ni_bssid));
1006 ieee80211_sta_leave(ic, ni);
1007 ic->ic_flags &= ~IEEE80211_F_SIBSS; /* XXX */
1008 /* FALLTHRU */
1009 case IEEE80211_S_AUTH:
1010 case IEEE80211_S_ASSOC:
1011 /* timeout restart scan */
1012 ni = ieee80211_find_node(&ic->ic_scan,
1013 ic->ic_bss->ni_macaddr);
1014 if (ni != NULL) {
1015 ni->ni_fails++;
1016 ieee80211_unref_node(&ni);
1018 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
1019 ieee80211_begin_scan(ic, arg);
1020 break;
1022 break;
1023 case IEEE80211_S_AUTH:
1024 switch (ostate) {
1025 case IEEE80211_S_INIT:
1026 case IEEE80211_S_SCAN:
1027 IEEE80211_SEND_MGMT(ic, ni,
1028 IEEE80211_FC0_SUBTYPE_AUTH, 1);
1029 break;
1030 case IEEE80211_S_AUTH:
1031 case IEEE80211_S_ASSOC:
1032 switch (arg) {
1033 case IEEE80211_FC0_SUBTYPE_AUTH:
1034 /* ??? */
1035 IEEE80211_SEND_MGMT(ic, ni,
1036 IEEE80211_FC0_SUBTYPE_AUTH, 2);
1037 break;
1038 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1039 /* ignore and retry scan on timeout */
1040 break;
1042 break;
1043 case IEEE80211_S_RUN:
1044 switch (arg) {
1045 case IEEE80211_FC0_SUBTYPE_AUTH:
1046 IEEE80211_SEND_MGMT(ic, ni,
1047 IEEE80211_FC0_SUBTYPE_AUTH, 2);
1048 ic->ic_state = ostate; /* stay RUN */
1049 break;
1050 case IEEE80211_FC0_SUBTYPE_DEAUTH:
1051 ieee80211_sta_leave(ic, ni);
1052 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1053 /* try to reauth */
1054 IEEE80211_SEND_MGMT(ic, ni,
1055 IEEE80211_FC0_SUBTYPE_AUTH, 1);
1057 break;
1059 break;
1061 break;
1062 case IEEE80211_S_ASSOC:
1063 switch (ostate) {
1064 case IEEE80211_S_INIT:
1065 case IEEE80211_S_SCAN:
1066 case IEEE80211_S_ASSOC:
1067 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1068 "%s: invalid transition\n", __func__);
1069 break;
1070 case IEEE80211_S_AUTH:
1071 IEEE80211_SEND_MGMT(ic, ni,
1072 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
1073 break;
1074 case IEEE80211_S_RUN:
1075 ieee80211_sta_leave(ic, ni);
1076 if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
1077 IEEE80211_SEND_MGMT(ic, ni,
1078 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
1080 break;
1082 break;
1083 case IEEE80211_S_RUN:
1084 if (ic->ic_flags & IEEE80211_F_WPA) {
1085 /* XXX validate prerequisites */
1087 switch (ostate) {
1088 case IEEE80211_S_INIT:
1089 if (ic->ic_opmode == IEEE80211_M_MONITOR)
1090 break;
1091 /* fall thru... */
1092 case IEEE80211_S_AUTH:
1093 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
1094 "%s: invalid transition\n", __func__);
1095 /* fall thru... */
1096 case IEEE80211_S_RUN:
1097 break;
1098 case IEEE80211_S_SCAN: /* adhoc/hostap mode */
1099 case IEEE80211_S_ASSOC: /* infra mode */
1100 IASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates,
1101 ("%s: bogus xmit rate %u setup\n", __func__,
1102 ni->ni_txrate));
1103 #ifdef IEEE80211_DEBUG
1104 if (ieee80211_msg_debug(ic)) {
1105 if (ic->ic_opmode == IEEE80211_M_STA)
1106 if_printf(ifp, "associated ");
1107 else
1108 if_printf(ifp, "synchronized ");
1109 printf("with %s ssid ",
1110 ether_sprintf(ni->ni_bssid));
1111 ieee80211_print_essid(ic->ic_bss->ni_essid,
1112 ni->ni_esslen);
1113 printf(" channel %d start %uMb\n",
1114 ieee80211_chan2ieee(ic, ic->ic_curchan),
1115 IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
1117 #endif
1118 ic->ic_mgt_timer = 0;
1119 if (ic->ic_opmode == IEEE80211_M_STA)
1120 ieee80211_notify_node_join(ic, ni,
1121 arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
1122 (*ifp->if_start)(ifp); /* XXX not authorized yet */
1123 break;
1126 * Start/stop the authenticator when operating as an
1127 * AP. We delay until here to allow configuration to
1128 * happen out of order.
1130 if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
1131 ic->ic_auth->ia_attach != NULL) {
1132 /* XXX check failure */
1133 ic->ic_auth->ia_attach(ic);
1134 } else if (ic->ic_auth->ia_detach != NULL) {
1135 ic->ic_auth->ia_detach(ic);
1138 * When 802.1x is not in use mark the port authorized
1139 * at this point so traffic can flow.
1141 if (ni->ni_authmode != IEEE80211_AUTH_8021X)
1142 ieee80211_node_authorize(ni);
1144 * Enable inactivity processing.
1145 * XXX
1147 ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
1148 ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
1149 break;
1151 return 0;