wlan - Update wlan from Adrian / FreeBSD
[dragonfly.git] / sys / netproto / 802_11 / wlan / ieee80211_proto.c
CommitLineData
32176cfd 1/*-
f186073c 2 * Copyright (c) 2001 Atsushi Onoe
32176cfd 3 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
f186073c
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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.
f186073c
JS
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.
f186073c
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25 */
26
085ff963
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27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
f186073c
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30/*
31 * IEEE 802.11 protocol support.
32 */
33
34#include "opt_inet.h"
32176cfd 35#include "opt_wlan.h"
f186073c
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36
37#include <sys/param.h>
f186073c 38#include <sys/kernel.h>
32176cfd
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39#include <sys/systm.h>
40
841ab66c 41#include <sys/socket.h>
32176cfd 42#include <sys/sockio.h>
841ab66c 43
f186073c 44#include <net/if.h>
085ff963 45#include <net/if_var.h>
841ab66c 46#include <net/if_media.h>
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47#include <net/ethernet.h> /* XXX for ether_sprintf */
48
49#if defined(__DragonFly__)
9ed293e0 50#include <net/ifq_var.h>
085ff963 51#endif
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52
53#include <netproto/802_11/ieee80211_var.h>
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54#include <netproto/802_11/ieee80211_adhoc.h>
55#include <netproto/802_11/ieee80211_sta.h>
56#include <netproto/802_11/ieee80211_hostap.h>
57#include <netproto/802_11/ieee80211_wds.h>
58#ifdef IEEE80211_SUPPORT_MESH
59#include <netproto/802_11/ieee80211_mesh.h>
60#endif
61#include <netproto/802_11/ieee80211_monitor.h>
62#include <netproto/802_11/ieee80211_input.h>
f186073c 63
841ab66c
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64/* XXX tunables */
65#define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
66#define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
f186073c 67
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68const char *ieee80211_mgt_subtype_name[] = {
69 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
70 "probe_req", "probe_resp", "reserved#6", "reserved#7",
71 "beacon", "atim", "disassoc", "auth",
085ff963 72 "deauth", "action", "action_noack", "reserved#15"
32176cfd
RP
73};
74const char *ieee80211_ctl_subtype_name[] = {
75 "reserved#0", "reserved#1", "reserved#2", "reserved#3",
76 "reserved#3", "reserved#5", "reserved#6", "reserved#7",
77 "reserved#8", "reserved#9", "ps_poll", "rts",
78 "cts", "ack", "cf_end", "cf_end_ack"
79};
80const char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = {
81 "IBSS", /* IEEE80211_M_IBSS */
82 "STA", /* IEEE80211_M_STA */
83 "WDS", /* IEEE80211_M_WDS */
84 "AHDEMO", /* IEEE80211_M_AHDEMO */
85 "HOSTAP", /* IEEE80211_M_HOSTAP */
86 "MONITOR", /* IEEE80211_M_MONITOR */
87 "MBSS" /* IEEE80211_M_MBSS */
88};
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89const char *ieee80211_state_name[IEEE80211_S_MAX] = {
90 "INIT", /* IEEE80211_S_INIT */
91 "SCAN", /* IEEE80211_S_SCAN */
92 "AUTH", /* IEEE80211_S_AUTH */
93 "ASSOC", /* IEEE80211_S_ASSOC */
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94 "CAC", /* IEEE80211_S_CAC */
95 "RUN", /* IEEE80211_S_RUN */
96 "CSA", /* IEEE80211_S_CSA */
97 "SLEEP", /* IEEE80211_S_SLEEP */
f186073c 98};
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99const char *ieee80211_wme_acnames[] = {
100 "WME_AC_BE",
101 "WME_AC_BK",
102 "WME_AC_VI",
103 "WME_AC_VO",
104 "WME_UPSD",
105};
f186073c 106
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107static void beacon_miss(void *, int);
108static void beacon_swmiss(void *, int);
109static void parent_updown(void *, int);
110static void update_mcast(void *, int);
111static void update_promisc(void *, int);
112static void update_channel(void *, int);
113static void update_chw(void *, int);
114static void ieee80211_newstate_cb(void *, int);
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115
116static int
117null_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
118 const struct ieee80211_bpf_params *params)
119{
120 struct ifnet *ifp = ni->ni_ic->ic_ifp;
121
122 if_printf(ifp, "missing ic_raw_xmit callback, drop frame\n");
123 m_freem(m);
124 return ENETDOWN;
125}
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126
127void
841ab66c 128ieee80211_proto_attach(struct ieee80211com *ic)
f186073c 129{
841ab66c 130 struct ifnet *ifp = ic->ic_ifp;
f186073c 131
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132 /* override the 802.3 setting */
133 ifp->if_hdrlen = ic->ic_headroom
134 + sizeof(struct ieee80211_qosframe_addr4)
135 + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN
136 + IEEE80211_WEP_EXTIVLEN;
137 /* XXX no way to recalculate on ifdetach */
138 if (ALIGN(ifp->if_hdrlen) > max_linkhdr) {
139 /* XXX sanity check... */
140 max_linkhdr = ALIGN(ifp->if_hdrlen);
141 max_hdr = max_linkhdr + max_protohdr;
142 max_datalen = MHLEN - max_hdr;
143 }
f186073c 144 ic->ic_protmode = IEEE80211_PROT_CTSONLY;
32176cfd 145
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146 TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ifp);
147 TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic);
148 TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic);
149 TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic);
150 TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, ic);
151 TASK_INIT(&ic->ic_chw_task, 0, update_chw, ic);
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152
153 ic->ic_wme.wme_hipri_switch_hysteresis =
154 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
f186073c 155
f186073c 156 /* initialize management frame handlers */
f186073c 157 ic->ic_send_mgmt = ieee80211_send_mgmt;
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158 ic->ic_raw_xmit = null_raw_xmit;
159
160 ieee80211_adhoc_attach(ic);
161 ieee80211_sta_attach(ic);
162 ieee80211_wds_attach(ic);
163 ieee80211_hostap_attach(ic);
164#ifdef IEEE80211_SUPPORT_MESH
165 ieee80211_mesh_attach(ic);
166#endif
167 ieee80211_monitor_attach(ic);
f186073c
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168}
169
170void
841ab66c 171ieee80211_proto_detach(struct ieee80211com *ic)
f186073c 172{
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173 ieee80211_monitor_detach(ic);
174#ifdef IEEE80211_SUPPORT_MESH
175 ieee80211_mesh_detach(ic);
176#endif
177 ieee80211_hostap_detach(ic);
178 ieee80211_wds_detach(ic);
179 ieee80211_adhoc_detach(ic);
180 ieee80211_sta_detach(ic);
181}
182
183static void
184null_update_beacon(struct ieee80211vap *vap, int item)
185{
186}
187
188void
189ieee80211_proto_vattach(struct ieee80211vap *vap)
190{
191 struct ieee80211com *ic = vap->iv_ic;
192 struct ifnet *ifp = vap->iv_ifp;
193 int i;
194
195 /* override the 802.3 setting */
196 ifp->if_hdrlen = ic->ic_ifp->if_hdrlen;
841ab66c 197
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198 vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT;
199 vap->iv_fragthreshold = IEEE80211_FRAG_DEFAULT;
200 vap->iv_bmiss_max = IEEE80211_BMISS_MAX;
085ff963 201 callout_init_mtx(&vap->iv_swbmiss, IEEE80211_LOCK_OBJ(ic), 0);
34a60cf6 202 callout_init_mp(&vap->iv_mgtsend);
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203 TASK_INIT(&vap->iv_nstate_task, 0, ieee80211_newstate_cb, vap);
204 TASK_INIT(&vap->iv_swbmiss_task, 0, beacon_swmiss, vap);
32176cfd
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205 /*
206 * Install default tx rate handling: no fixed rate, lowest
207 * supported rate for mgmt and multicast frames. Default
208 * max retry count. These settings can be changed by the
209 * driver and/or user applications.
210 */
211 for (i = IEEE80211_MODE_11A; i < IEEE80211_MODE_MAX; i++) {
212 const struct ieee80211_rateset *rs = &ic->ic_sup_rates[i];
213
214 vap->iv_txparms[i].ucastrate = IEEE80211_FIXED_RATE_NONE;
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215
216 /*
217 * Setting the management rate to MCS 0 assumes that the
218 * BSS Basic rate set is empty and the BSS Basic MCS set
219 * is not.
220 *
221 * Since we're not checking this, default to the lowest
222 * defined rate for this mode.
223 *
224 * At least one 11n AP (DLINK DIR-825) is reported to drop
225 * some MCS management traffic (eg BA response frames.)
226 *
227 * See also: 9.6.0 of the 802.11n-2009 specification.
228 */
229#ifdef NOTYET
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230 if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) {
231 vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS;
232 vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS;
233 } else {
234 vap->iv_txparms[i].mgmtrate =
235 rs->rs_rates[0] & IEEE80211_RATE_VAL;
236 vap->iv_txparms[i].mcastrate =
237 rs->rs_rates[0] & IEEE80211_RATE_VAL;
238 }
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239#endif
240 vap->iv_txparms[i].mgmtrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
241 vap->iv_txparms[i].mcastrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
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RP
242 vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT;
243 }
244 vap->iv_roaming = IEEE80211_ROAMING_AUTO;
245
246 vap->iv_update_beacon = null_update_beacon;
247 vap->iv_deliver_data = ieee80211_deliver_data;
248
249 /* attach support for operating mode */
250 ic->ic_vattach[vap->iv_opmode](vap);
251}
252
253void
254ieee80211_proto_vdetach(struct ieee80211vap *vap)
255{
256#define FREEAPPIE(ie) do { \
257 if (ie != NULL) \
258 kfree(ie, M_80211_NODE_IE); \
259} while (0)
260 /*
261 * Detach operating mode module.
262 */
263 if (vap->iv_opdetach != NULL)
264 vap->iv_opdetach(vap);
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265 /*
266 * This should not be needed as we detach when reseting
267 * the state but be conservative here since the
268 * authenticator may do things like spawn kernel threads.
269 */
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270 if (vap->iv_auth->ia_detach != NULL)
271 vap->iv_auth->ia_detach(vap);
841ab66c
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272 /*
273 * Detach any ACL'ator.
274 */
32176cfd
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275 if (vap->iv_acl != NULL)
276 vap->iv_acl->iac_detach(vap);
277
278 FREEAPPIE(vap->iv_appie_beacon);
279 FREEAPPIE(vap->iv_appie_probereq);
280 FREEAPPIE(vap->iv_appie_proberesp);
281 FREEAPPIE(vap->iv_appie_assocreq);
282 FREEAPPIE(vap->iv_appie_assocresp);
283 FREEAPPIE(vap->iv_appie_wpa);
284#undef FREEAPPIE
841ab66c
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285}
286
287/*
288 * Simple-minded authenticator module support.
289 */
290
291#define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1)
292/* XXX well-known names */
293static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
294 "wlan_internal", /* IEEE80211_AUTH_NONE */
295 "wlan_internal", /* IEEE80211_AUTH_OPEN */
296 "wlan_internal", /* IEEE80211_AUTH_SHARED */
297 "wlan_xauth", /* IEEE80211_AUTH_8021X */
298 "wlan_internal", /* IEEE80211_AUTH_AUTO */
299 "wlan_xauth", /* IEEE80211_AUTH_WPA */
300};
301static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
302
303static const struct ieee80211_authenticator auth_internal = {
304 .ia_name = "wlan_internal",
305 .ia_attach = NULL,
306 .ia_detach = NULL,
307 .ia_node_join = NULL,
308 .ia_node_leave = NULL,
309};
310
311/*
312 * Setup internal authenticators once; they are never unregistered.
313 */
314static void
315ieee80211_auth_setup(void)
316{
317 ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
318 ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
319 ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
320}
321SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
322
323const struct ieee80211_authenticator *
324ieee80211_authenticator_get(int auth)
325{
326 if (auth >= IEEE80211_AUTH_MAX)
327 return NULL;
328 if (authenticators[auth] == NULL)
329 ieee80211_load_module(auth_modnames[auth]);
330 return authenticators[auth];
331}
332
333void
334ieee80211_authenticator_register(int type,
335 const struct ieee80211_authenticator *auth)
336{
337 if (type >= IEEE80211_AUTH_MAX)
338 return;
339 authenticators[type] = auth;
340}
341
342void
343ieee80211_authenticator_unregister(int type)
344{
345
346 if (type >= IEEE80211_AUTH_MAX)
347 return;
348 authenticators[type] = NULL;
349}
350
351/*
352 * Very simple-minded ACL module support.
353 */
354/* XXX just one for now */
355static const struct ieee80211_aclator *acl = NULL;
356
357void
358ieee80211_aclator_register(const struct ieee80211_aclator *iac)
359{
a6ec04bc 360 kprintf("wlan: %s acl policy registered\n", iac->iac_name);
841ab66c
SZ
361 acl = iac;
362}
363
364void
365ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
366{
367 if (acl == iac)
368 acl = NULL;
a6ec04bc 369 kprintf("wlan: %s acl policy unregistered\n", iac->iac_name);
841ab66c
SZ
370}
371
372const struct ieee80211_aclator *
373ieee80211_aclator_get(const char *name)
374{
375 if (acl == NULL)
376 ieee80211_load_module("wlan_acl");
377 return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
f186073c
JS
378}
379
380void
841ab66c 381ieee80211_print_essid(const uint8_t *essid, int len)
f186073c 382{
32176cfd 383 const uint8_t *p;
f186073c 384 int i;
f186073c
JS
385
386 if (len > IEEE80211_NWID_LEN)
387 len = IEEE80211_NWID_LEN;
388 /* determine printable or not */
389 for (i = 0, p = essid; i < len; i++, p++) {
390 if (*p < ' ' || *p > 0x7e)
391 break;
392 }
393 if (i == len) {
a6ec04bc 394 kprintf("\"");
f186073c 395 for (i = 0, p = essid; i < len; i++, p++)
a6ec04bc
SW
396 kprintf("%c", *p);
397 kprintf("\"");
f186073c 398 } else {
a6ec04bc 399 kprintf("0x");
f186073c 400 for (i = 0, p = essid; i < len; i++, p++)
a6ec04bc 401 kprintf("%02x", *p);
f186073c
JS
402 }
403}
404
476d885d 405void
32176cfd
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406ieee80211_dump_pkt(struct ieee80211com *ic,
407 const uint8_t *buf, int len, int rate, int rssi)
f186073c 408{
841ab66c 409 const struct ieee80211_frame *wh;
f186073c
JS
410 int i;
411
841ab66c 412 wh = (const struct ieee80211_frame *)buf;
f186073c
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413 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
414 case IEEE80211_FC1_DIR_NODS:
085ff963
MD
415 kprintf("NODS %s", ether_sprintf(wh->i_addr2));
416 kprintf("->%s", ether_sprintf(wh->i_addr1));
417 kprintf("(%s)", ether_sprintf(wh->i_addr3));
f186073c
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418 break;
419 case IEEE80211_FC1_DIR_TODS:
085ff963
MD
420 kprintf("TODS %s", ether_sprintf(wh->i_addr2));
421 kprintf("->%s", ether_sprintf(wh->i_addr3));
422 kprintf("(%s)", ether_sprintf(wh->i_addr1));
f186073c
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423 break;
424 case IEEE80211_FC1_DIR_FROMDS:
085ff963
MD
425 kprintf("FRDS %s", ether_sprintf(wh->i_addr3));
426 kprintf("->%s", ether_sprintf(wh->i_addr1));
427 kprintf("(%s)", ether_sprintf(wh->i_addr2));
f186073c
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428 break;
429 case IEEE80211_FC1_DIR_DSTODS:
085ff963
MD
430 kprintf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1]));
431 kprintf("->%s", ether_sprintf(wh->i_addr3));
432 kprintf("(%s", ether_sprintf(wh->i_addr2));
433 kprintf("->%s)", ether_sprintf(wh->i_addr1));
f186073c
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434 break;
435 }
436 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
437 case IEEE80211_FC0_TYPE_DATA:
a6ec04bc 438 kprintf(" data");
f186073c
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439 break;
440 case IEEE80211_FC0_TYPE_MGT:
a6ec04bc 441 kprintf(" %s", ieee80211_mgt_subtype_name[
f186073c
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442 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
443 >> IEEE80211_FC0_SUBTYPE_SHIFT]);
444 break;
445 default:
a6ec04bc 446 kprintf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
f186073c
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447 break;
448 }
32176cfd
RP
449 if (IEEE80211_QOS_HAS_SEQ(wh)) {
450 const struct ieee80211_qosframe *qwh =
451 (const struct ieee80211_qosframe *)buf;
452 kprintf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID,
453 qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : "");
454 }
085ff963 455 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
32176cfd
RP
456 int off;
457
458 off = ieee80211_anyhdrspace(ic, wh);
459 kprintf(" WEP [IV %.02x %.02x %.02x",
460 buf[off+0], buf[off+1], buf[off+2]);
461 if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV)
462 kprintf(" %.02x %.02x %.02x",
463 buf[off+4], buf[off+5], buf[off+6]);
464 kprintf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6);
841ab66c 465 }
f186073c 466 if (rate >= 0)
a6ec04bc 467 kprintf(" %dM", rate / 2);
f186073c 468 if (rssi >= 0)
a6ec04bc
SW
469 kprintf(" +%d", rssi);
470 kprintf("\n");
f186073c
JS
471 if (len > 0) {
472 for (i = 0; i < len; i++) {
473 if ((i & 1) == 0)
a6ec04bc
SW
474 kprintf(" ");
475 kprintf("%02x", buf[i]);
f186073c 476 }
a6ec04bc 477 kprintf("\n");
f186073c
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478 }
479}
480
32176cfd
RP
481static __inline int
482findrix(const struct ieee80211_rateset *rs, int r)
483{
484 int i;
485
486 for (i = 0; i < rs->rs_nrates; i++)
487 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r)
488 return i;
489 return -1;
490}
491
f186073c 492int
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493ieee80211_fix_rate(struct ieee80211_node *ni,
494 struct ieee80211_rateset *nrs, int flags)
f186073c
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495{
496#define RV(v) ((v) & IEEE80211_RATE_VAL)
32176cfd 497 struct ieee80211vap *vap = ni->ni_vap;
841ab66c 498 struct ieee80211com *ic = ni->ni_ic;
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RP
499 int i, j, rix, error;
500 int okrate, badrate, fixedrate, ucastrate;
208a1285 501 const struct ieee80211_rateset *srs;
f186073c
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502 uint8_t r;
503
32176cfd
RP
504 error = 0;
505 okrate = badrate = 0;
506 ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate;
507 if (ucastrate != IEEE80211_FIXED_RATE_NONE) {
508 /*
509 * Workaround awkwardness with fixed rate. We are called
510 * to check both the legacy rate set and the HT rate set
511 * but we must apply any legacy fixed rate check only to the
512 * legacy rate set and vice versa. We cannot tell what type
513 * of rate set we've been given (legacy or HT) but we can
514 * distinguish the fixed rate type (MCS have 0x80 set).
515 * So to deal with this the caller communicates whether to
516 * check MCS or legacy rate using the flags and we use the
517 * type of any fixed rate to avoid applying an MCS to a
518 * legacy rate and vice versa.
519 */
520 if (ucastrate & 0x80) {
521 if (flags & IEEE80211_F_DOFRATE)
522 flags &= ~IEEE80211_F_DOFRATE;
523 } else if ((ucastrate & 0x80) == 0) {
524 if (flags & IEEE80211_F_DOFMCS)
525 flags &= ~IEEE80211_F_DOFMCS;
526 }
527 /* NB: required to make MCS match below work */
528 ucastrate &= IEEE80211_RATE_VAL;
529 }
530 fixedrate = IEEE80211_FIXED_RATE_NONE;
841ab66c 531 /*
32176cfd
RP
532 * XXX we are called to process both MCS and legacy rates;
533 * we must use the appropriate basic rate set or chaos will
534 * ensue; for now callers that want MCS must supply
535 * IEEE80211_F_DOBRS; at some point we'll need to split this
536 * function so there are two variants, one for MCS and one
537 * for legacy rates.
841ab66c 538 */
32176cfd
RP
539 if (flags & IEEE80211_F_DOBRS)
540 srs = (const struct ieee80211_rateset *)
541 ieee80211_get_suphtrates(ic, ni->ni_chan);
542 else
543 srs = ieee80211_get_suprates(ic, ni->ni_chan);
f186073c 544 for (i = 0; i < nrs->rs_nrates; ) {
f186073c
JS
545 if (flags & IEEE80211_F_DOSORT) {
546 /*
547 * Sort rates.
548 */
549 for (j = i + 1; j < nrs->rs_nrates; j++) {
550 if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
551 r = nrs->rs_rates[i];
552 nrs->rs_rates[i] = nrs->rs_rates[j];
553 nrs->rs_rates[j] = r;
554 }
555 }
556 }
557 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
558 badrate = r;
32176cfd
RP
559 /*
560 * Check for fixed rate.
561 */
562 if (r == ucastrate)
563 fixedrate = r;
564 /*
565 * Check against supported rates.
566 */
567 rix = findrix(srs, r);
568 if (flags & IEEE80211_F_DONEGO) {
569 if (rix < 0) {
f186073c
JS
570 /*
571 * A rate in the node's rate set is not
32176cfd
RP
572 * supported. If this is a basic rate and we
573 * are operating as a STA then this is an error.
574 * Otherwise we just discard/ignore the rate.
f186073c 575 */
32176cfd 576 if ((flags & IEEE80211_F_JOIN) &&
f186073c
JS
577 (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
578 error++;
32176cfd
RP
579 } else if ((flags & IEEE80211_F_JOIN) == 0) {
580 /*
581 * Overwrite with the supported rate
582 * value so any basic rate bit is set.
583 */
584 nrs->rs_rates[i] = srs->rs_rates[rix];
f186073c
JS
585 }
586 }
32176cfd 587 if ((flags & IEEE80211_F_DODEL) && rix < 0) {
f186073c
JS
588 /*
589 * Delete unacceptable rates.
590 */
32176cfd
RP
591 nrs->rs_nrates--;
592 for (j = i; j < nrs->rs_nrates; j++)
593 nrs->rs_rates[j] = nrs->rs_rates[j + 1];
594 nrs->rs_rates[j] = 0;
595 continue;
f186073c 596 }
32176cfd 597 if (rix >= 0)
f186073c
JS
598 okrate = nrs->rs_rates[i];
599 i++;
600 }
841ab66c 601 if (okrate == 0 || error != 0 ||
32176cfd
RP
602 ((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) &&
603 fixedrate != ucastrate)) {
604 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni,
605 "%s: flags 0x%x okrate %d error %d fixedrate 0x%x "
085ff963 606 "ucastrate %x\n", __func__, fixedrate, ucastrate, flags);
f186073c 607 return badrate | IEEE80211_RATE_BASIC;
32176cfd 608 } else
f186073c
JS
609 return RV(okrate);
610#undef RV
611}
612
841ab66c
SZ
613/*
614 * Reset 11g-related state.
615 */
616void
617ieee80211_reset_erp(struct ieee80211com *ic)
618{
619 ic->ic_flags &= ~IEEE80211_F_USEPROT;
620 ic->ic_nonerpsta = 0;
621 ic->ic_longslotsta = 0;
622 /*
623 * Short slot time is enabled only when operating in 11g
624 * and not in an IBSS. We must also honor whether or not
625 * the driver is capable of doing it.
626 */
627 ieee80211_set_shortslottime(ic,
32176cfd
RP
628 IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
629 IEEE80211_IS_CHAN_HT(ic->ic_curchan) ||
630 (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
841ab66c
SZ
631 ic->ic_opmode == IEEE80211_M_HOSTAP &&
632 (ic->ic_caps & IEEE80211_C_SHSLOT)));
633 /*
634 * Set short preamble and ERP barker-preamble flags.
635 */
32176cfd
RP
636 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
637 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
638 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
639 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
640 } else {
641 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
642 ic->ic_flags |= IEEE80211_F_USEBARKER;
643 }
841ab66c
SZ
644}
645
646/*
647 * Set the short slot time state and notify the driver.
648 */
649void
650ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
651{
652 if (onoff)
653 ic->ic_flags |= IEEE80211_F_SHSLOT;
654 else
655 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
32176cfd 656 /* notify driver */
841ab66c
SZ
657 if (ic->ic_updateslot != NULL)
658 ic->ic_updateslot(ic->ic_ifp);
659}
660
661/*
662 * Check if the specified rate set supports ERP.
663 * NB: the rate set is assumed to be sorted.
664 */
665int
32176cfd 666ieee80211_iserp_rateset(const struct ieee80211_rateset *rs)
841ab66c 667{
841ab66c
SZ
668 static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
669 int i, j;
670
085ff963 671 if (rs->rs_nrates < nitems(rates))
841ab66c 672 return 0;
085ff963 673 for (i = 0; i < nitems(rates); i++) {
841ab66c
SZ
674 for (j = 0; j < rs->rs_nrates; j++) {
675 int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
676 if (rates[i] == r)
677 goto next;
678 if (r > rates[i])
679 return 0;
680 }
681 return 0;
682 next:
683 ;
684 }
685 return 1;
841ab66c
SZ
686}
687
688/*
32176cfd 689 * Mark the basic rates for the rate table based on the
841ab66c
SZ
690 * operating mode. For real 11g we mark all the 11b rates
691 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only
692 * 11b rates. There's also a pseudo 11a-mode used to mark only
693 * the basic OFDM rates.
694 */
32176cfd
RP
695static void
696setbasicrates(struct ieee80211_rateset *rs,
697 enum ieee80211_phymode mode, int add)
841ab66c 698{
32176cfd 699 static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = {
9639b71d
SZ
700 [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } },
701 [IEEE80211_MODE_11B] = { 2, { 2, 4 } },
32176cfd 702 /* NB: mixed b/g */
9639b71d 703 [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } },
9639b71d 704 [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } },
32176cfd
RP
705 [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } },
706 [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } },
707 [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } },
708 [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } },
709 [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } },
710 /* NB: mixed b/g */
711 [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } },
841ab66c
SZ
712 };
713 int i, j;
714
715 for (i = 0; i < rs->rs_nrates; i++) {
32176cfd
RP
716 if (!add)
717 rs->rs_rates[i] &= IEEE80211_RATE_VAL;
718 for (j = 0; j < basic[mode].rs_nrates; j++)
719 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
841ab66c
SZ
720 rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
721 break;
722 }
723 }
724}
725
32176cfd
RP
726/*
727 * Set the basic rates in a rate set.
728 */
729void
730ieee80211_setbasicrates(struct ieee80211_rateset *rs,
731 enum ieee80211_phymode mode)
208a1285 732{
32176cfd
RP
733 setbasicrates(rs, mode, 0);
734}
208a1285 735
32176cfd
RP
736/*
737 * Add basic rates to a rate set.
738 */
739void
740ieee80211_addbasicrates(struct ieee80211_rateset *rs,
741 enum ieee80211_phymode mode)
742{
743 setbasicrates(rs, mode, 1);
208a1285
SZ
744}
745
841ab66c 746/*
32176cfd
RP
747 * WME protocol support.
748 *
749 * The default 11a/b/g/n parameters come from the WiFi Alliance WMM
750 * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n
751 * Draft 2.0 Test Plan (Appendix D).
752 *
753 * Static/Dynamic Turbo mode settings come from Atheros.
841ab66c
SZ
754 */
755typedef struct phyParamType {
32176cfd
RP
756 uint8_t aifsn;
757 uint8_t logcwmin;
758 uint8_t logcwmax;
759 uint16_t txopLimit;
760 uint8_t acm;
841ab66c
SZ
761} paramType;
762
763static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
32176cfd
RP
764 [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 },
765 [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 },
766 [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 },
767 [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 },
768 [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 },
769 [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 },
770 [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 },
771 [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 },
772 [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 },
773 [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 },
774 [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 },
775 [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 },
841ab66c
SZ
776};
777static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
32176cfd
RP
778 [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 },
779 [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 },
780 [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 },
781 [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 },
782 [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 },
783 [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 },
784 [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 },
785 [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 },
786 [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 },
787 [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 },
788 [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 },
789 [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 },
841ab66c
SZ
790};
791static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
32176cfd
RP
792 [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 },
793 [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 },
794 [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 },
795 [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 },
796 [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 },
797 [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 },
798 [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 },
799 [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 },
800 [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 },
801 [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 },
802 [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 },
803 [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 },
841ab66c
SZ
804};
805static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
32176cfd
RP
806 [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 },
807 [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 },
808 [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 },
809 [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 },
810 [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 },
811 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
812 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
813 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
814 [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 },
815 [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 },
816 [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 },
817 [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 },
841ab66c
SZ
818};
819
820static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
32176cfd
RP
821 [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 },
822 [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 },
823 [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 },
824 [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 },
825 [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 },
826 [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 },
827 [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 },
828 [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 },
829 [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 },
830 [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 },
831 [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 },
832 [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 },
841ab66c
SZ
833};
834static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
32176cfd
RP
835 [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 },
836 [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 },
837 [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 },
838 [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 },
839 [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 },
840 [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 },
841 [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 },
842 [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 },
843 [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 },
844 [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 },
845 [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 },
846 [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 },
841ab66c
SZ
847};
848static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
32176cfd
RP
849 [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 },
850 [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 },
851 [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 },
852 [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 },
853 [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 },
854 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
855 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
856 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
857 [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 },
858 [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 },
859 [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 },
860 [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 },
841ab66c
SZ
861};
862
32176cfd
RP
863static void
864_setifsparams(struct wmeParams *wmep, const paramType *phy)
865{
866 wmep->wmep_aifsn = phy->aifsn;
867 wmep->wmep_logcwmin = phy->logcwmin;
868 wmep->wmep_logcwmax = phy->logcwmax;
869 wmep->wmep_txopLimit = phy->txopLimit;
870}
871
872static void
873setwmeparams(struct ieee80211vap *vap, const char *type, int ac,
874 struct wmeParams *wmep, const paramType *phy)
841ab66c 875{
32176cfd
RP
876 wmep->wmep_acm = phy->acm;
877 _setifsparams(wmep, phy);
878
879 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
880 "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n",
881 ieee80211_wme_acnames[ac], type,
882 wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin,
883 wmep->wmep_logcwmax, wmep->wmep_txopLimit);
884}
885
886static void
887ieee80211_wme_initparams_locked(struct ieee80211vap *vap)
888{
889 struct ieee80211com *ic = vap->iv_ic;
841ab66c
SZ
890 struct ieee80211_wme_state *wme = &ic->ic_wme;
891 const paramType *pPhyParam, *pBssPhyParam;
892 struct wmeParams *wmep;
32176cfd 893 enum ieee80211_phymode mode;
841ab66c
SZ
894 int i;
895
085ff963
MD
896 IEEE80211_LOCK_ASSERT(ic);
897
32176cfd 898 if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1)
841ab66c
SZ
899 return;
900
085ff963
MD
901 /*
902 * Clear the wme cap_info field so a qoscount from a previous
903 * vap doesn't confuse later code which only parses the beacon
904 * field and updates hardware when said field changes.
905 * Otherwise the hardware is programmed with defaults, not what
906 * the beacon actually announces.
907 */
908 wme->wme_wmeChanParams.cap_info = 0;
909
32176cfd
RP
910 /*
911 * Select mode; we can be called early in which case we
912 * always use auto mode. We know we'll be called when
913 * entering the RUN state with bsschan setup properly
914 * so state will eventually get set correctly
915 */
916 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
917 mode = ieee80211_chan2mode(ic->ic_bsschan);
918 else
919 mode = IEEE80211_MODE_AUTO;
841ab66c
SZ
920 for (i = 0; i < WME_NUM_AC; i++) {
921 switch (i) {
922 case WME_AC_BK:
32176cfd
RP
923 pPhyParam = &phyParamForAC_BK[mode];
924 pBssPhyParam = &phyParamForAC_BK[mode];
841ab66c
SZ
925 break;
926 case WME_AC_VI:
32176cfd
RP
927 pPhyParam = &phyParamForAC_VI[mode];
928 pBssPhyParam = &bssPhyParamForAC_VI[mode];
841ab66c
SZ
929 break;
930 case WME_AC_VO:
32176cfd
RP
931 pPhyParam = &phyParamForAC_VO[mode];
932 pBssPhyParam = &bssPhyParamForAC_VO[mode];
841ab66c
SZ
933 break;
934 case WME_AC_BE:
935 default:
32176cfd
RP
936 pPhyParam = &phyParamForAC_BE[mode];
937 pBssPhyParam = &bssPhyParamForAC_BE[mode];
841ab66c
SZ
938 break;
939 }
841ab66c
SZ
940 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
941 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
32176cfd 942 setwmeparams(vap, "chan", i, wmep, pPhyParam);
841ab66c 943 } else {
32176cfd 944 setwmeparams(vap, "chan", i, wmep, pBssPhyParam);
841ab66c 945 }
841ab66c 946 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
32176cfd 947 setwmeparams(vap, "bss ", i, wmep, pBssPhyParam);
841ab66c
SZ
948 }
949 /* NB: check ic_bss to avoid NULL deref on initial attach */
32176cfd 950 if (vap->iv_bss != NULL) {
841ab66c
SZ
951 /*
952 * Calculate agressive mode switching threshold based
953 * on beacon interval. This doesn't need locking since
954 * we're only called before entering the RUN state at
955 * which point we start sending beacon frames.
956 */
957 wme->wme_hipri_switch_thresh =
32176cfd
RP
958 (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100;
959 wme->wme_flags &= ~WME_F_AGGRMODE;
960 ieee80211_wme_updateparams(vap);
841ab66c
SZ
961 }
962}
963
32176cfd
RP
964void
965ieee80211_wme_initparams(struct ieee80211vap *vap)
966{
085ff963
MD
967 struct ieee80211com *ic = vap->iv_ic;
968
969 IEEE80211_LOCK(ic);
32176cfd 970 ieee80211_wme_initparams_locked(vap);
085ff963 971 IEEE80211_UNLOCK(ic);
32176cfd
RP
972}
973
841ab66c
SZ
974/*
975 * Update WME parameters for ourself and the BSS.
976 */
977void
32176cfd 978ieee80211_wme_updateparams_locked(struct ieee80211vap *vap)
841ab66c 979{
32176cfd
RP
980 static const paramType aggrParam[IEEE80211_MODE_MAX] = {
981 [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 },
982 [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 },
983 [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 },
984 [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 },
985 [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 },
986 [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 },
987 [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 },
988 [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 },
989 [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 },
990 [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 },
991 [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
992 [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
841ab66c 993 };
32176cfd 994 struct ieee80211com *ic = vap->iv_ic;
841ab66c
SZ
995 struct ieee80211_wme_state *wme = &ic->ic_wme;
996 const struct wmeParams *wmep;
997 struct wmeParams *chanp, *bssp;
32176cfd 998 enum ieee80211_phymode mode;
841ab66c 999 int i;
085ff963 1000 int do_aggrmode = 0;
841ab66c 1001
32176cfd
RP
1002 /*
1003 * Set up the channel access parameters for the physical
1004 * device. First populate the configured settings.
1005 */
841ab66c
SZ
1006 for (i = 0; i < WME_NUM_AC; i++) {
1007 chanp = &wme->wme_chanParams.cap_wmeParams[i];
1008 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
1009 chanp->wmep_aifsn = wmep->wmep_aifsn;
1010 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
1011 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
1012 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
1013
1014 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
1015 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
1016 chanp->wmep_aifsn = wmep->wmep_aifsn;
1017 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
1018 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
1019 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
1020 }
1021
32176cfd
RP
1022 /*
1023 * Select mode; we can be called early in which case we
1024 * always use auto mode. We know we'll be called when
1025 * entering the RUN state with bsschan setup properly
1026 * so state will eventually get set correctly
1027 */
1028 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
1029 mode = ieee80211_chan2mode(ic->ic_bsschan);
1030 else
1031 mode = IEEE80211_MODE_AUTO;
1032
841ab66c
SZ
1033 /*
1034 * This implements agressive mode as found in certain
1035 * vendors' AP's. When there is significant high
1036 * priority (VI/VO) traffic in the BSS throttle back BE
1037 * traffic by using conservative parameters. Otherwise
1038 * BE uses agressive params to optimize performance of
1039 * legacy/non-QoS traffic.
1040 */
085ff963
MD
1041
1042 /* Hostap? Only if aggressive mode is enabled */
1043 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
1044 (wme->wme_flags & WME_F_AGGRMODE) != 0)
1045 do_aggrmode = 1;
1046
1047 /*
1048 * Station? Only if we're in a non-QoS BSS.
1049 */
1050 else if ((vap->iv_opmode == IEEE80211_M_STA &&
1051 (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0))
1052 do_aggrmode = 1;
1053
1054 /*
1055 * IBSS? Only if we we have WME enabled.
1056 */
1057 else if ((vap->iv_opmode == IEEE80211_M_IBSS) &&
1058 (vap->iv_flags & IEEE80211_F_WME))
1059 do_aggrmode = 1;
1060
1061 /*
1062 * If WME is disabled on this VAP, default to aggressive mode
1063 * regardless of the configuration.
1064 */
1065 if ((vap->iv_flags & IEEE80211_F_WME) == 0)
1066 do_aggrmode = 1;
1067
1068 /* XXX WDS? */
1069
1070 /* XXX MBSS? */
1071
1072 if (do_aggrmode) {
841ab66c
SZ
1073 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
1074 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
1075
32176cfd 1076 chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn;
841ab66c 1077 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
32176cfd 1078 aggrParam[mode].logcwmin;
841ab66c 1079 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
32176cfd 1080 aggrParam[mode].logcwmax;
841ab66c 1081 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
32176cfd
RP
1082 (vap->iv_flags & IEEE80211_F_BURST) ?
1083 aggrParam[mode].txopLimit : 0;
1084 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1085 "update %s (chan+bss) [acm %u aifsn %u logcwmin %u "
1086 "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE],
1087 chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin,
1088 chanp->wmep_logcwmax, chanp->wmep_txopLimit);
841ab66c 1089 }
085ff963
MD
1090
1091
1092 /*
1093 * Change the contention window based on the number of associated
1094 * stations. If the number of associated stations is 1 and
1095 * aggressive mode is enabled, lower the contention window even
1096 * further.
1097 */
32176cfd 1098 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
841ab66c 1099 ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
32176cfd
RP
1100 static const uint8_t logCwMin[IEEE80211_MODE_MAX] = {
1101 [IEEE80211_MODE_AUTO] = 3,
1102 [IEEE80211_MODE_11A] = 3,
1103 [IEEE80211_MODE_11B] = 4,
1104 [IEEE80211_MODE_11G] = 3,
1105 [IEEE80211_MODE_FH] = 4,
1106 [IEEE80211_MODE_TURBO_A] = 3,
1107 [IEEE80211_MODE_TURBO_G] = 3,
1108 [IEEE80211_MODE_STURBO_A] = 3,
1109 [IEEE80211_MODE_HALF] = 3,
1110 [IEEE80211_MODE_QUARTER] = 3,
1111 [IEEE80211_MODE_11NA] = 3,
1112 [IEEE80211_MODE_11NG] = 3,
841ab66c
SZ
1113 };
1114 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
1115 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
1116
32176cfd
RP
1117 chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode];
1118 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1119 "update %s (chan+bss) logcwmin %u\n",
1120 ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin);
085ff963
MD
1121 }
1122
1123 /*
1124 * Arrange for the beacon update.
1125 *
1126 * XXX what about MBSS, WDS?
1127 */
1128 if (vap->iv_opmode == IEEE80211_M_HOSTAP
1129 || vap->iv_opmode == IEEE80211_M_IBSS) {
841ab66c
SZ
1130 /*
1131 * Arrange for a beacon update and bump the parameter
1132 * set number so associated stations load the new values.
1133 */
1134 wme->wme_bssChanParams.cap_info =
1135 (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
32176cfd 1136 ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME);
841ab66c
SZ
1137 }
1138
1139 wme->wme_update(ic);
1140
32176cfd
RP
1141 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1142 "%s: WME params updated, cap_info 0x%x\n", __func__,
1143 vap->iv_opmode == IEEE80211_M_STA ?
1144 wme->wme_wmeChanParams.cap_info :
1145 wme->wme_bssChanParams.cap_info);
841ab66c
SZ
1146}
1147
1148void
32176cfd 1149ieee80211_wme_updateparams(struct ieee80211vap *vap)
841ab66c 1150{
32176cfd 1151 struct ieee80211com *ic = vap->iv_ic;
841ab66c 1152
32176cfd 1153 if (ic->ic_caps & IEEE80211_C_WME) {
085ff963 1154 IEEE80211_LOCK(ic);
32176cfd 1155 ieee80211_wme_updateparams_locked(vap);
085ff963 1156 IEEE80211_UNLOCK(ic);
841ab66c 1157 }
32176cfd
RP
1158}
1159
1160static void
085ff963 1161parent_updown(void *arg, int npending)
32176cfd
RP
1162{
1163 struct ifnet *parent = arg;
1164
085ff963
MD
1165#if defined(__DragonFly__)
1166 int wst;
1167
1168 wst = wlan_serialize_push();
1169 parent->if_ioctl(parent, SIOCSIFFLAGS, NULL, NULL);
1170 wlan_serialize_pop(wst);
1171#else
1172 parent->if_ioctl(parent, SIOCSIFFLAGS, NULL);
1173#endif
32176cfd
RP
1174}
1175
1176static void
085ff963 1177update_mcast(void *arg, int npending)
32176cfd
RP
1178{
1179 struct ieee80211com *ic = arg;
1180 struct ifnet *parent = ic->ic_ifp;
1181
1182 ic->ic_update_mcast(parent);
1183}
1184
1185static void
085ff963 1186update_promisc(void *arg, int npending)
32176cfd
RP
1187{
1188 struct ieee80211com *ic = arg;
1189 struct ifnet *parent = ic->ic_ifp;
1190
1191 ic->ic_update_promisc(parent);
1192}
1193
1194static void
085ff963 1195update_channel(void *arg, int npending)
32176cfd
RP
1196{
1197 struct ieee80211com *ic = arg;
1198
1199 ic->ic_set_channel(ic);
1200 ieee80211_radiotap_chan_change(ic);
085ff963
MD
1201}
1202
1203static void
1204update_chw(void *arg, int npending)
1205{
1206 struct ieee80211com *ic = arg;
1207
1208 /*
1209 * XXX should we defer the channel width _config_ update until now?
1210 */
1211 ic->ic_update_chw(ic);
32176cfd
RP
1212}
1213
1214/*
1215 * Block until the parent is in a known state. This is
1216 * used after any operations that dispatch a task (e.g.
1217 * to auto-configure the parent device up/down).
1218 */
1219void
1220ieee80211_waitfor_parent(struct ieee80211com *ic)
1221{
1222 taskqueue_block(ic->ic_tq);
1223 ieee80211_draintask(ic, &ic->ic_parent_task);
1224 ieee80211_draintask(ic, &ic->ic_mcast_task);
1225 ieee80211_draintask(ic, &ic->ic_promisc_task);
1226 ieee80211_draintask(ic, &ic->ic_chan_task);
1227 ieee80211_draintask(ic, &ic->ic_bmiss_task);
085ff963 1228 ieee80211_draintask(ic, &ic->ic_chw_task);
32176cfd
RP
1229 taskqueue_unblock(ic->ic_tq);
1230}
1231
1232/*
1233 * Start a vap running. If this is the first vap to be
1234 * set running on the underlying device then we
1235 * automatically bring the device up.
1236 */
1237void
1238ieee80211_start_locked(struct ieee80211vap *vap)
1239{
1240 struct ifnet *ifp = vap->iv_ifp;
1241 struct ieee80211com *ic = vap->iv_ic;
1242 struct ifnet *parent = ic->ic_ifp;
1243
085ff963
MD
1244 IEEE80211_LOCK_ASSERT(ic);
1245
32176cfd 1246 IEEE80211_DPRINTF(vap,
841ab66c 1247 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
32176cfd 1248 "start running, %d vaps running\n", ic->ic_nrunning);
841ab66c 1249
085ff963 1250 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
32176cfd
RP
1251 /*
1252 * Mark us running. Note that it's ok to do this first;
1253 * if we need to bring the parent device up we defer that
1254 * to avoid dropping the com lock. We expect the device
1255 * to respond to being marked up by calling back into us
1256 * through ieee80211_start_all at which point we'll come
1257 * back in here and complete the work.
1258 */
085ff963 1259 ifp->if_drv_flags |= IFF_DRV_RUNNING;
32176cfd
RP
1260 /*
1261 * We are not running; if this we are the first vap
1262 * to be brought up auto-up the parent if necessary.
1263 */
1264 if (ic->ic_nrunning++ == 0 &&
085ff963 1265 (parent->if_drv_flags & IFF_DRV_RUNNING) == 0) {
32176cfd
RP
1266 IEEE80211_DPRINTF(vap,
1267 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
1268 "%s: up parent %s\n", __func__, parent->if_xname);
1269 parent->if_flags |= IFF_UP;
1270 ieee80211_runtask(ic, &ic->ic_parent_task);
1271 return;
1272 }
1273 }
841ab66c 1274 /*
32176cfd
RP
1275 * If the parent is up and running, then kick the
1276 * 802.11 state machine as appropriate.
841ab66c 1277 */
085ff963 1278 if ((parent->if_drv_flags & IFF_DRV_RUNNING) &&
32176cfd
RP
1279 vap->iv_roaming != IEEE80211_ROAMING_MANUAL) {
1280 if (vap->iv_opmode == IEEE80211_M_STA) {
1281#if 0
1282 /* XXX bypasses scan too easily; disable for now */
1283 /*
1284 * Try to be intelligent about clocking the state
1285 * machine. If we're currently in RUN state then
1286 * we should be able to apply any new state/parameters
1287 * simply by re-associating. Otherwise we need to
1288 * re-scan to select an appropriate ap.
1289 */
1290 if (vap->iv_state >= IEEE80211_S_RUN)
1291 ieee80211_new_state_locked(vap,
1292 IEEE80211_S_ASSOC, 1);
1293 else
1294#endif
1295 ieee80211_new_state_locked(vap,
1296 IEEE80211_S_SCAN, 0);
1297 } else {
1298 /*
1299 * For monitor+wds mode there's nothing to do but
1300 * start running. Otherwise if this is the first
1301 * vap to be brought up, start a scan which may be
1302 * preempted if the station is locked to a particular
1303 * channel.
1304 */
1305 vap->iv_flags_ext |= IEEE80211_FEXT_REINIT;
1306 if (vap->iv_opmode == IEEE80211_M_MONITOR ||
1307 vap->iv_opmode == IEEE80211_M_WDS)
1308 ieee80211_new_state_locked(vap,
1309 IEEE80211_S_RUN, -1);
1310 else
1311 ieee80211_new_state_locked(vap,
1312 IEEE80211_S_SCAN, 0);
1313 }
1314 }
1315}
1316
1317/*
1318 * Start a single vap.
1319 */
1320void
1321ieee80211_init(void *arg)
1322{
1323 struct ieee80211vap *vap = arg;
1324
1325 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
1326 "%s\n", __func__);
1327
085ff963 1328 IEEE80211_LOCK(vap->iv_ic);
32176cfd 1329 ieee80211_start_locked(vap);
085ff963 1330 IEEE80211_UNLOCK(vap->iv_ic);
32176cfd
RP
1331}
1332
1333/*
1334 * Start all runnable vap's on a device.
1335 */
1336void
1337ieee80211_start_all(struct ieee80211com *ic)
1338{
1339 struct ieee80211vap *vap;
841ab66c 1340
085ff963 1341 IEEE80211_LOCK(ic);
32176cfd
RP
1342 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1343 struct ifnet *ifp = vap->iv_ifp;
1344 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
1345 ieee80211_start_locked(vap);
1346 }
085ff963 1347 IEEE80211_UNLOCK(ic);
32176cfd
RP
1348}
1349
1350/*
1351 * Stop a vap. We force it down using the state machine
1352 * then mark it's ifnet not running. If this is the last
1353 * vap running on the underlying device then we close it
1354 * too to insure it will be properly initialized when the
1355 * next vap is brought up.
1356 */
1357void
1358ieee80211_stop_locked(struct ieee80211vap *vap)
1359{
1360 struct ieee80211com *ic = vap->iv_ic;
1361 struct ifnet *ifp = vap->iv_ifp;
1362 struct ifnet *parent = ic->ic_ifp;
1363
085ff963
MD
1364 IEEE80211_LOCK_ASSERT(ic);
1365
32176cfd
RP
1366 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
1367 "stop running, %d vaps running\n", ic->ic_nrunning);
1368
1369 ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1);
085ff963
MD
1370 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1371 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */
32176cfd 1372 if (--ic->ic_nrunning == 0 &&
085ff963 1373 (parent->if_drv_flags & IFF_DRV_RUNNING)) {
32176cfd
RP
1374 IEEE80211_DPRINTF(vap,
1375 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
1376 "down parent %s\n", parent->if_xname);
1377 parent->if_flags &= ~IFF_UP;
1378 ieee80211_runtask(ic, &ic->ic_parent_task);
1379 }
1380 }
1381}
1382
1383void
1384ieee80211_stop(struct ieee80211vap *vap)
1385{
085ff963
MD
1386 struct ieee80211com *ic = vap->iv_ic;
1387
1388 IEEE80211_LOCK(ic);
32176cfd 1389 ieee80211_stop_locked(vap);
085ff963 1390 IEEE80211_UNLOCK(ic);
32176cfd
RP
1391}
1392
1393/*
1394 * Stop all vap's running on a device.
1395 */
1396void
1397ieee80211_stop_all(struct ieee80211com *ic)
1398{
1399 struct ieee80211vap *vap;
1400
085ff963 1401 IEEE80211_LOCK(ic);
32176cfd
RP
1402 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1403 struct ifnet *ifp = vap->iv_ifp;
1404 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
1405 ieee80211_stop_locked(vap);
1406 }
085ff963 1407 IEEE80211_UNLOCK(ic);
32176cfd
RP
1408
1409 ieee80211_waitfor_parent(ic);
1410}
1411
1412/*
1413 * Stop all vap's running on a device and arrange
1414 * for those that were running to be resumed.
1415 */
1416void
1417ieee80211_suspend_all(struct ieee80211com *ic)
1418{
1419 struct ieee80211vap *vap;
1420
085ff963 1421 IEEE80211_LOCK(ic);
32176cfd
RP
1422 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1423 struct ifnet *ifp = vap->iv_ifp;
1424 if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */
1425 vap->iv_flags_ext |= IEEE80211_FEXT_RESUME;
1426 ieee80211_stop_locked(vap);
1427 }
1428 }
085ff963 1429 IEEE80211_UNLOCK(ic);
32176cfd
RP
1430
1431 ieee80211_waitfor_parent(ic);
1432}
1433
1434/*
1435 * Start all vap's marked for resume.
1436 */
1437void
1438ieee80211_resume_all(struct ieee80211com *ic)
1439{
1440 struct ieee80211vap *vap;
1441
085ff963 1442 IEEE80211_LOCK(ic);
32176cfd
RP
1443 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1444 struct ifnet *ifp = vap->iv_ifp;
1445 if (!IFNET_IS_UP_RUNNING(ifp) &&
1446 (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) {
1447 vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME;
1448 ieee80211_start_locked(vap);
1449 }
1450 }
085ff963 1451 IEEE80211_UNLOCK(ic);
32176cfd
RP
1452}
1453
1454void
1455ieee80211_beacon_miss(struct ieee80211com *ic)
1456{
085ff963 1457 IEEE80211_LOCK(ic);
32176cfd
RP
1458 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
1459 /* Process in a taskq, the handler may reenter the driver */
1460 ieee80211_runtask(ic, &ic->ic_bmiss_task);
1461 }
085ff963 1462 IEEE80211_UNLOCK(ic);
32176cfd
RP
1463}
1464
1465static void
085ff963 1466beacon_miss(void *arg, int npending)
32176cfd
RP
1467{
1468 struct ieee80211com *ic = arg;
1469 struct ieee80211vap *vap;
1470
085ff963 1471 IEEE80211_LOCK(ic);
32176cfd 1472 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
841ab66c 1473 /*
32176cfd
RP
1474 * We only pass events through for sta vap's in RUN state;
1475 * may be too restrictive but for now this saves all the
1476 * handlers duplicating these checks.
841ab66c 1477 */
32176cfd
RP
1478 if (vap->iv_opmode == IEEE80211_M_STA &&
1479 vap->iv_state >= IEEE80211_S_RUN &&
1480 vap->iv_bmiss != NULL)
1481 vap->iv_bmiss(vap);
841ab66c 1482 }
085ff963 1483 IEEE80211_UNLOCK(ic);
32176cfd
RP
1484}
1485
1486static void
085ff963 1487beacon_swmiss(void *arg, int npending)
32176cfd
RP
1488{
1489 struct ieee80211vap *vap = arg;
085ff963 1490 struct ieee80211com *ic = vap->iv_ic;
32176cfd 1491
085ff963 1492 IEEE80211_LOCK(ic);
47156d48
MD
1493 if (vap->iv_state == IEEE80211_S_RUN) {
1494 /* XXX Call multiple times if npending > zero? */
1495 vap->iv_bmiss(vap);
1496 }
085ff963 1497 IEEE80211_UNLOCK(ic);
841ab66c
SZ
1498}
1499
1500/*
1501 * Software beacon miss handling. Check if any beacons
1502 * were received in the last period. If not post a
1503 * beacon miss; otherwise reset the counter.
1504 */
32176cfd 1505void
085ff963 1506ieee80211_swbmiss(void *arg)
841ab66c 1507{
32176cfd
RP
1508 struct ieee80211vap *vap = arg;
1509 struct ieee80211com *ic = vap->iv_ic;
841ab66c 1510
085ff963
MD
1511 IEEE80211_LOCK_ASSERT(ic);
1512
1513 /* XXX sleep state? */
32176cfd
RP
1514 KASSERT(vap->iv_state == IEEE80211_S_RUN,
1515 ("wrong state %d", vap->iv_state));
841ab66c 1516
32176cfd
RP
1517 if (ic->ic_flags & IEEE80211_F_SCAN) {
1518 /*
1519 * If scanning just ignore and reset state. If we get a
1520 * bmiss after coming out of scan because we haven't had
1521 * time to receive a beacon then we should probe the AP
1522 * before posting a real bmiss (unless iv_bmiss_max has
1523 * been artifiically lowered). A cleaner solution might
1524 * be to disable the timer on scan start/end but to handle
1525 * case of multiple sta vap's we'd need to disable the
1526 * timers of all affected vap's.
1527 */
1528 vap->iv_swbmiss_count = 0;
1529 } else if (vap->iv_swbmiss_count == 0) {
1530 if (vap->iv_bmiss != NULL)
1531 ieee80211_runtask(ic, &vap->iv_swbmiss_task);
085ff963 1532 } else
32176cfd
RP
1533 vap->iv_swbmiss_count = 0;
1534 callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period,
085ff963 1535 ieee80211_swbmiss, vap);
32176cfd 1536}
841ab66c 1537
32176cfd
RP
1538/*
1539 * Start an 802.11h channel switch. We record the parameters,
1540 * mark the operation pending, notify each vap through the
1541 * beacon update mechanism so it can update the beacon frame
1542 * contents, and then switch vap's to CSA state to block outbound
1543 * traffic. Devices that handle CSA directly can use the state
1544 * switch to do the right thing so long as they call
1545 * ieee80211_csa_completeswitch when it's time to complete the
1546 * channel change. Devices that depend on the net80211 layer can
1547 * use ieee80211_beacon_update to handle the countdown and the
1548 * channel switch.
1549 */
1550void
1551ieee80211_csa_startswitch(struct ieee80211com *ic,
1552 struct ieee80211_channel *c, int mode, int count)
1553{
1554 struct ieee80211vap *vap;
1555
085ff963
MD
1556 IEEE80211_LOCK_ASSERT(ic);
1557
32176cfd
RP
1558 ic->ic_csa_newchan = c;
1559 ic->ic_csa_mode = mode;
1560 ic->ic_csa_count = count;
1561 ic->ic_flags |= IEEE80211_F_CSAPENDING;
1562 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1563 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
1564 vap->iv_opmode == IEEE80211_M_IBSS ||
1565 vap->iv_opmode == IEEE80211_M_MBSS)
1566 ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA);
1567 /* switch to CSA state to block outbound traffic */
1568 if (vap->iv_state == IEEE80211_S_RUN)
1569 ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0);
1570 }
1571 ieee80211_notify_csa(ic, c, mode, count);
841ab66c
SZ
1572}
1573
085ff963
MD
1574/*
1575 * Complete the channel switch by transitioning all CSA VAPs to RUN.
1576 * This is called by both the completion and cancellation functions
1577 * so each VAP is placed back in the RUN state and can thus transmit.
1578 */
841ab66c 1579static void
32176cfd 1580csa_completeswitch(struct ieee80211com *ic)
841ab66c 1581{
32176cfd 1582 struct ieee80211vap *vap;
841ab66c 1583
32176cfd
RP
1584 ic->ic_csa_newchan = NULL;
1585 ic->ic_flags &= ~IEEE80211_F_CSAPENDING;
1586
1587 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1588 if (vap->iv_state == IEEE80211_S_CSA)
1589 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
841ab66c
SZ
1590}
1591
32176cfd
RP
1592/*
1593 * Complete an 802.11h channel switch started by ieee80211_csa_startswitch.
1594 * We clear state and move all vap's in CSA state to RUN state
1595 * so they can again transmit.
085ff963
MD
1596 *
1597 * Although this may not be completely correct, update the BSS channel
1598 * for each VAP to the newly configured channel. The setcurchan sets
1599 * the current operating channel for the interface (so the radio does
1600 * switch over) but the VAP BSS isn't updated, leading to incorrectly
1601 * reported information via ioctl.
32176cfd 1602 */
846cf0bc 1603void
32176cfd 1604ieee80211_csa_completeswitch(struct ieee80211com *ic)
841ab66c 1605{
085ff963
MD
1606 struct ieee80211vap *vap;
1607
1608 IEEE80211_LOCK_ASSERT(ic);
1609
32176cfd 1610 KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending"));
846cf0bc 1611
32176cfd 1612 ieee80211_setcurchan(ic, ic->ic_csa_newchan);
085ff963
MD
1613 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1614 if (vap->iv_state == IEEE80211_S_CSA)
1615 vap->iv_bss->ni_chan = ic->ic_curchan;
1616
32176cfd
RP
1617 csa_completeswitch(ic);
1618}
846cf0bc 1619
32176cfd
RP
1620/*
1621 * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch.
1622 * We clear state and move all vap's in CSA state to RUN state
1623 * so they can again transmit.
1624 */
1625void
1626ieee80211_csa_cancelswitch(struct ieee80211com *ic)
1627{
085ff963
MD
1628 IEEE80211_LOCK_ASSERT(ic);
1629
32176cfd
RP
1630 csa_completeswitch(ic);
1631}
1632
1633/*
1634 * Complete a DFS CAC started by ieee80211_dfs_cac_start.
1635 * We clear state and move all vap's in CAC state to RUN state.
1636 */
1637void
1638ieee80211_cac_completeswitch(struct ieee80211vap *vap0)
1639{
1640 struct ieee80211com *ic = vap0->iv_ic;
1641 struct ieee80211vap *vap;
1642
085ff963 1643 IEEE80211_LOCK(ic);
32176cfd
RP
1644 /*
1645 * Complete CAC state change for lead vap first; then
1646 * clock all the other vap's waiting.
1647 */
1648 KASSERT(vap0->iv_state == IEEE80211_S_CAC,
1649 ("wrong state %d", vap0->iv_state));
1650 ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0);
1651
1652 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
1653 if (vap->iv_state == IEEE80211_S_CAC)
1654 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
085ff963 1655 IEEE80211_UNLOCK(ic);
32176cfd
RP
1656}
1657
1658/*
1659 * Force all vap's other than the specified vap to the INIT state
1660 * and mark them as waiting for a scan to complete. These vaps
1661 * will be brought up when the scan completes and the scanning vap
1662 * reaches RUN state by wakeupwaiting.
1663 */
1664static void
1665markwaiting(struct ieee80211vap *vap0)
1666{
1667 struct ieee80211com *ic = vap0->iv_ic;
1668 struct ieee80211vap *vap;
1669
085ff963
MD
1670 IEEE80211_LOCK_ASSERT(ic);
1671
32176cfd
RP
1672 /*
1673 * A vap list entry can not disappear since we are running on the
1674 * taskqueue and a vap destroy will queue and drain another state
1675 * change task.
1676 */
1677 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1678 if (vap == vap0)
1679 continue;
1680 if (vap->iv_state != IEEE80211_S_INIT) {
1681 /* NB: iv_newstate may drop the lock */
1682 vap->iv_newstate(vap, IEEE80211_S_INIT, 0);
085ff963 1683 IEEE80211_LOCK_ASSERT(ic);
32176cfd 1684 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
846cf0bc 1685 }
32176cfd
RP
1686 }
1687}
1688
1689/*
1690 * Wakeup all vap's waiting for a scan to complete. This is the
1691 * companion to markwaiting (above) and is used to coordinate
1692 * multiple vaps scanning.
1693 * This is called from the state taskqueue.
1694 */
1695static void
1696wakeupwaiting(struct ieee80211vap *vap0)
1697{
1698 struct ieee80211com *ic = vap0->iv_ic;
1699 struct ieee80211vap *vap;
1700
085ff963
MD
1701 IEEE80211_LOCK_ASSERT(ic);
1702
32176cfd
RP
1703 /*
1704 * A vap list entry can not disappear since we are running on the
1705 * taskqueue and a vap destroy will queue and drain another state
1706 * change task.
1707 */
1708 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
1709 if (vap == vap0)
1710 continue;
1711 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) {
1712 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
1713 /* NB: sta's cannot go INIT->RUN */
1714 /* NB: iv_newstate may drop the lock */
1715 vap->iv_newstate(vap,
1716 vap->iv_opmode == IEEE80211_M_STA ?
1717 IEEE80211_S_SCAN : IEEE80211_S_RUN, 0);
085ff963 1718 IEEE80211_LOCK_ASSERT(ic);
846cf0bc 1719 }
846cf0bc 1720 }
32176cfd
RP
1721}
1722
1723/*
1724 * Handle post state change work common to all operating modes.
1725 */
1726static void
085ff963 1727ieee80211_newstate_cb(void *xvap, int npending)
32176cfd
RP
1728{
1729 struct ieee80211vap *vap = xvap;
085ff963 1730 struct ieee80211com *ic = vap->iv_ic;
32176cfd
RP
1731 enum ieee80211_state nstate, ostate;
1732 int arg, rc;
841ab66c 1733
085ff963 1734 IEEE80211_LOCK(ic);
32176cfd
RP
1735 nstate = vap->iv_nstate;
1736 arg = vap->iv_nstate_arg;
1737
1738 if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) {
1739 /*
1740 * We have been requested to drop back to the INIT before
1741 * proceeding to the new state.
1742 */
1743 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1744 "%s: %s -> %s arg %d\n", __func__,
1745 ieee80211_state_name[vap->iv_state],
1746 ieee80211_state_name[IEEE80211_S_INIT], arg);
1747 vap->iv_newstate(vap, IEEE80211_S_INIT, arg);
085ff963 1748 IEEE80211_LOCK_ASSERT(ic);
32176cfd
RP
1749 vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT;
1750 }
1751
1752 ostate = vap->iv_state;
1753 if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) {
1754 /*
1755 * SCAN was forced; e.g. on beacon miss. Force other running
1756 * vap's to INIT state and mark them as waiting for the scan to
1757 * complete. This insures they don't interfere with our
1758 * scanning. Since we are single threaded the vaps can not
1759 * transition again while we are executing.
1760 *
1761 * XXX not always right, assumes ap follows sta
1762 */
1763 markwaiting(vap);
1764 }
1765 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1766 "%s: %s -> %s arg %d\n", __func__,
1767 ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg);
1768
1769 rc = vap->iv_newstate(vap, nstate, arg);
085ff963 1770 IEEE80211_LOCK_ASSERT(ic);
32176cfd
RP
1771 vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT;
1772 if (rc != 0) {
1773 /* State transition failed */
1774 KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred"));
1775 KASSERT(nstate != IEEE80211_S_INIT,
1776 ("INIT state change failed"));
1777 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1778 "%s: %s returned error %d\n", __func__,
1779 ieee80211_state_name[nstate], rc);
1780 goto done;
1781 }
1782
1783 /* No actual transition, skip post processing */
1784 if (ostate == nstate)
1785 goto done;
1786
1787 if (nstate == IEEE80211_S_RUN) {
1788 /*
1789 * OACTIVE may be set on the vap if the upper layer
1790 * tried to transmit (e.g. IPv6 NDP) before we reach
1791 * RUN state. Clear it and restart xmit.
1792 *
1793 * Note this can also happen as a result of SLEEP->RUN
1794 * (i.e. coming out of power save mode).
1795 */
085ff963
MD
1796#if defined(__DragonFly__)
1797 struct ifaltq_subque *ifsq;
1798 int wst;
1799
1800 ifsq = ifq_get_subq_default(&vap->iv_ifp->if_snd);
f0a26983 1801 ifsq_clr_oactive(ifsq);
085ff963 1802 wst = wlan_serialize_push();
f0a26983 1803 vap->iv_ifp->if_start(vap->iv_ifp, ifsq);
085ff963
MD
1804 wlan_serialize_pop(wst);
1805#else
1806 vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1807#endif
1808
1809 /*
1810 * XXX TODO Kick-start a VAP queue - this should be a method!
1811 */
32176cfd
RP
1812
1813 /* bring up any vaps waiting on us */
1814 wakeupwaiting(vap);
1815 } else if (nstate == IEEE80211_S_INIT) {
1816 /*
1817 * Flush the scan cache if we did the last scan (XXX?)
1818 * and flush any frames on send queues from this vap.
1819 * Note the mgt q is used only for legacy drivers and
1820 * will go away shortly.
1821 */
1822 ieee80211_scan_flush(vap);
1823
085ff963
MD
1824 /*
1825 * XXX TODO: ic/vap queue flush
1826 */
32176cfd
RP
1827 }
1828done:
085ff963 1829 IEEE80211_UNLOCK(ic);
841ab66c
SZ
1830}
1831
32176cfd
RP
1832/*
1833 * Public interface for initiating a state machine change.
1834 * This routine single-threads the request and coordinates
1835 * the scheduling of multiple vaps for the purpose of selecting
1836 * an operating channel. Specifically the following scenarios
1837 * are handled:
1838 * o only one vap can be selecting a channel so on transition to
1839 * SCAN state if another vap is already scanning then
1840 * mark the caller for later processing and return without
1841 * doing anything (XXX? expectations by caller of synchronous operation)
1842 * o only one vap can be doing CAC of a channel so on transition to
1843 * CAC state if another vap is already scanning for radar then
1844 * mark the caller for later processing and return without
1845 * doing anything (XXX? expectations by caller of synchronous operation)
1846 * o if another vap is already running when a request is made
1847 * to SCAN then an operating channel has been chosen; bypass
1848 * the scan and just join the channel
1849 *
1850 * Note that the state change call is done through the iv_newstate
1851 * method pointer so any driver routine gets invoked. The driver
1852 * will normally call back into operating mode-specific
1853 * ieee80211_newstate routines (below) unless it needs to completely
1854 * bypass the state machine (e.g. because the firmware has it's
1855 * own idea how things should work). Bypassing the net80211 layer
1856 * is usually a mistake and indicates lack of proper integration
1857 * with the net80211 layer.
1858 */
d98a0bcf 1859int
32176cfd
RP
1860ieee80211_new_state_locked(struct ieee80211vap *vap,
1861 enum ieee80211_state nstate, int arg)
f186073c 1862{
32176cfd
RP
1863 struct ieee80211com *ic = vap->iv_ic;
1864 struct ieee80211vap *vp;
f186073c 1865 enum ieee80211_state ostate;
32176cfd 1866 int nrunning, nscanning;
f186073c 1867
085ff963
MD
1868 IEEE80211_LOCK_ASSERT(ic);
1869
32176cfd
RP
1870 if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) {
1871 if (vap->iv_nstate == IEEE80211_S_INIT) {
841ab66c 1872 /*
32176cfd
RP
1873 * XXX The vap is being stopped, do no allow any other
1874 * state changes until this is completed.
841ab66c 1875 */
32176cfd
RP
1876 return -1;
1877 } else if (vap->iv_state != vap->iv_nstate) {
1878#if 0
1879 /* Warn if the previous state hasn't completed. */
1880 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1881 "%s: pending %s -> %s transition lost\n", __func__,
1882 ieee80211_state_name[vap->iv_state],
1883 ieee80211_state_name[vap->iv_nstate]);
1884#else
1885 /* XXX temporarily enable to identify issues */
1886 if_printf(vap->iv_ifp,
1887 "%s: pending %s -> %s transition lost\n",
1888 __func__, ieee80211_state_name[vap->iv_state],
1889 ieee80211_state_name[vap->iv_nstate]);
1890#endif
f186073c 1891 }
32176cfd
RP
1892 }
1893
1894 nrunning = nscanning = 0;
1895 /* XXX can track this state instead of calculating */
1896 TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) {
1897 if (vp != vap) {
1898 if (vp->iv_state >= IEEE80211_S_RUN)
1899 nrunning++;
1900 /* XXX doesn't handle bg scan */
1901 /* NB: CAC+AUTH+ASSOC treated like SCAN */
1902 else if (vp->iv_state > IEEE80211_S_INIT)
1903 nscanning++;
1904 }
1905 }
1906 ostate = vap->iv_state;
1907 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1908 "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__,
1909 ieee80211_state_name[ostate], ieee80211_state_name[nstate],
1910 nrunning, nscanning);
1911 switch (nstate) {
1912 case IEEE80211_S_SCAN:
1913 if (ostate == IEEE80211_S_INIT) {
1914 /*
1915 * INIT -> SCAN happens on initial bringup.
1916 */
1917 KASSERT(!(nscanning && nrunning),
1918 ("%d scanning and %d running", nscanning, nrunning));
1919 if (nscanning) {
1920 /*
1921 * Someone is scanning, defer our state
1922 * change until the work has completed.
1923 */
1924 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1925 "%s: defer %s -> %s\n",
1926 __func__, ieee80211_state_name[ostate],
1927 ieee80211_state_name[nstate]);
1928 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
1929 return 0;
f186073c 1930 }
32176cfd
RP
1931 if (nrunning) {
1932 /*
1933 * Someone is operating; just join the channel
1934 * they have chosen.
1935 */
1936 /* XXX kill arg? */
1937 /* XXX check each opmode, adhoc? */
1938 if (vap->iv_opmode == IEEE80211_M_STA)
1939 nstate = IEEE80211_S_SCAN;
1940 else
1941 nstate = IEEE80211_S_RUN;
1942#ifdef IEEE80211_DEBUG
1943 if (nstate != IEEE80211_S_SCAN) {
1944 IEEE80211_DPRINTF(vap,
1945 IEEE80211_MSG_STATE,
1946 "%s: override, now %s -> %s\n",
1947 __func__,
1948 ieee80211_state_name[ostate],
1949 ieee80211_state_name[nstate]);
841ab66c 1950 }
32176cfd 1951#endif
841ab66c 1952 }
f186073c
JS
1953 }
1954 break;
1955 case IEEE80211_S_RUN:
32176cfd
RP
1956 if (vap->iv_opmode == IEEE80211_M_WDS &&
1957 (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) &&
1958 nscanning) {
1959 /*
1960 * Legacy WDS with someone else scanning; don't
1961 * go online until that completes as we should
1962 * follow the other vap to the channel they choose.
1963 */
1964 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1965 "%s: defer %s -> %s (legacy WDS)\n", __func__,
1966 ieee80211_state_name[ostate],
1967 ieee80211_state_name[nstate]);
1968 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
1969 return 0;
f186073c 1970 }
32176cfd
RP
1971 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
1972 IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
1973 (vap->iv_flags_ext & IEEE80211_FEXT_DFS) &&
1974 !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) {
841ab66c 1975 /*
32176cfd
RP
1976 * This is a DFS channel, transition to CAC state
1977 * instead of RUN. This allows us to initiate
1978 * Channel Availability Check (CAC) as specified
1979 * by 11h/DFS.
841ab66c 1980 */
32176cfd
RP
1981 nstate = IEEE80211_S_CAC;
1982 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
1983 "%s: override %s -> %s (DFS)\n", __func__,
1984 ieee80211_state_name[ostate],
1985 ieee80211_state_name[nstate]);
841ab66c 1986 }
32176cfd
RP
1987 break;
1988 case IEEE80211_S_INIT:
1989 /* cancel any scan in progress */
1990 ieee80211_cancel_scan(vap);
1991 if (ostate == IEEE80211_S_INIT ) {
1992 /* XXX don't believe this */
1993 /* INIT -> INIT. nothing to do */
1994 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
841ab66c 1995 }
32176cfd
RP
1996 /* fall thru... */
1997 default:
f186073c
JS
1998 break;
1999 }
32176cfd
RP
2000 /* defer the state change to a thread */
2001 vap->iv_nstate = nstate;
2002 vap->iv_nstate_arg = arg;
2003 vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT;
2004 ieee80211_runtask(ic, &vap->iv_nstate_task);
2005 return EINPROGRESS;
2006}
2007
2008int
2009ieee80211_new_state(struct ieee80211vap *vap,
2010 enum ieee80211_state nstate, int arg)
2011{
085ff963 2012 struct ieee80211com *ic = vap->iv_ic;
32176cfd
RP
2013 int rc;
2014
085ff963 2015 IEEE80211_LOCK(ic);
32176cfd 2016 rc = ieee80211_new_state_locked(vap, nstate, arg);
085ff963 2017 IEEE80211_UNLOCK(ic);
32176cfd 2018 return rc;
f186073c 2019}