1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2001 Atsushi Onoe
5 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
6 * Copyright (c) 2012 IEEE
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32
33 /*
34 * IEEE 802.11 protocol support.
35 */
36
37 #include "opt_inet.h"
38 #include "opt_wlan.h"
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kernel.h>
43 #include <sys/malloc.h>
44
45 #include <sys/socket.h>
46 #include <sys/sockio.h>
47
48 #include <net/if.h>
49 #include <net/if_var.h>
50 #include <net/if_media.h>
51 #include <net/ethernet.h> /* XXX for ether_sprintf */
52
53 #include <net80211/ieee80211_var.h>
54 #include <net80211/ieee80211_adhoc.h>
55 #include <net80211/ieee80211_sta.h>
56 #include <net80211/ieee80211_hostap.h>
57 #include <net80211/ieee80211_wds.h>
58 #ifdef IEEE80211_SUPPORT_MESH
59 #include <net80211/ieee80211_mesh.h>
60 #endif
61 #include <net80211/ieee80211_monitor.h>
62 #include <net80211/ieee80211_input.h>
63
64 /* XXX tunables */
65 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
66 #define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
67
68 const char *mgt_subtype_name[] = {
69 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
70 "probe_req", "probe_resp", "timing_adv", "reserved#7",
71 "beacon", "atim", "disassoc", "auth",
72 "deauth", "action", "action_noack", "reserved#15"
73 };
74 const char *ctl_subtype_name[] = {
75 "reserved#0", "reserved#1", "reserved#2", "reserved#3",
76 "reserved#4", "reserved#5", "reserved#6", "control_wrap",
77 "bar", "ba", "ps_poll", "rts",
78 "cts", "ack", "cf_end", "cf_end_ack"
79 };
80 const 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 };
89 const 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 */
94 "CAC", /* IEEE80211_S_CAC */
95 "RUN", /* IEEE80211_S_RUN */
96 "CSA", /* IEEE80211_S_CSA */
97 "SLEEP", /* IEEE80211_S_SLEEP */
98 };
99 const char *ieee80211_wme_acnames[] = {
100 "WME_AC_BE",
101 "WME_AC_BK",
102 "WME_AC_VI",
103 "WME_AC_VO",
104 "WME_UPSD",
105 };
106
107 /*
108 * Reason code descriptions were (mostly) obtained from
109 * IEEE Std 802.11-2012, pp. 442-445 Table 8-36.
110 */
111 const char *
112 ieee80211_reason_to_string(uint16_t reason)
113 {
114 switch (reason) {
115 case IEEE80211_REASON_UNSPECIFIED:
116 return ("unspecified");
117 case IEEE80211_REASON_AUTH_EXPIRE:
118 return ("previous authentication is expired");
119 case IEEE80211_REASON_AUTH_LEAVE:
120 return ("sending STA is leaving/has left IBSS or ESS");
121 case IEEE80211_REASON_ASSOC_EXPIRE:
122 return ("disassociated due to inactivity");
123 case IEEE80211_REASON_ASSOC_TOOMANY:
124 return ("too many associated STAs");
125 case IEEE80211_REASON_NOT_AUTHED:
126 return ("class 2 frame received from nonauthenticated STA");
127 case IEEE80211_REASON_NOT_ASSOCED:
128 return ("class 3 frame received from nonassociated STA");
129 case IEEE80211_REASON_ASSOC_LEAVE:
130 return ("sending STA is leaving/has left BSS");
131 case IEEE80211_REASON_ASSOC_NOT_AUTHED:
132 return ("STA requesting (re)association is not authenticated");
133 case IEEE80211_REASON_DISASSOC_PWRCAP_BAD:
134 return ("information in the Power Capability element is "
135 "unacceptable");
136 case IEEE80211_REASON_DISASSOC_SUPCHAN_BAD:
137 return ("information in the Supported Channels element is "
138 "unacceptable");
139 case IEEE80211_REASON_IE_INVALID:
140 return ("invalid element");
141 case IEEE80211_REASON_MIC_FAILURE:
142 return ("MIC failure");
143 case IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT:
144 return ("4-Way handshake timeout");
145 case IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT:
146 return ("group key update timeout");
147 case IEEE80211_REASON_IE_IN_4WAY_DIFFERS:
148 return ("element in 4-Way handshake different from "
149 "(re)association request/probe response/beacon frame");
150 case IEEE80211_REASON_GROUP_CIPHER_INVALID:
151 return ("invalid group cipher");
152 case IEEE80211_REASON_PAIRWISE_CIPHER_INVALID:
153 return ("invalid pairwise cipher");
154 case IEEE80211_REASON_AKMP_INVALID:
155 return ("invalid AKMP");
156 case IEEE80211_REASON_UNSUPP_RSN_IE_VERSION:
157 return ("unsupported version in RSN IE");
158 case IEEE80211_REASON_INVALID_RSN_IE_CAP:
159 return ("invalid capabilities in RSN IE");
160 case IEEE80211_REASON_802_1X_AUTH_FAILED:
161 return ("IEEE 802.1X authentication failed");
162 case IEEE80211_REASON_CIPHER_SUITE_REJECTED:
163 return ("cipher suite rejected because of the security "
164 "policy");
165 case IEEE80211_REASON_UNSPECIFIED_QOS:
166 return ("unspecified (QoS-related)");
167 case IEEE80211_REASON_INSUFFICIENT_BW:
168 return ("QoS AP lacks sufficient bandwidth for this QoS STA");
169 case IEEE80211_REASON_TOOMANY_FRAMES:
170 return ("too many frames need to be acknowledged");
171 case IEEE80211_REASON_OUTSIDE_TXOP:
172 return ("STA is transmitting outside the limits of its TXOPs");
173 case IEEE80211_REASON_LEAVING_QBSS:
174 return ("requested from peer STA (the STA is "
175 "resetting/leaving the BSS)");
176 case IEEE80211_REASON_BAD_MECHANISM:
177 return ("requested from peer STA (it does not want to use "
178 "the mechanism)");
179 case IEEE80211_REASON_SETUP_NEEDED:
180 return ("requested from peer STA (setup is required for the "
181 "used mechanism)");
182 case IEEE80211_REASON_TIMEOUT:
183 return ("requested from peer STA (timeout)");
184 case IEEE80211_REASON_PEER_LINK_CANCELED:
185 return ("SME cancels the mesh peering instance (not related "
186 "to the maximum number of peer mesh STAs)");
187 case IEEE80211_REASON_MESH_MAX_PEERS:
188 return ("maximum number of peer mesh STAs was reached");
189 case IEEE80211_REASON_MESH_CPVIOLATION:
190 return ("the received information violates the Mesh "
191 "Configuration policy configured in the mesh STA "
192 "profile");
193 case IEEE80211_REASON_MESH_CLOSE_RCVD:
194 return ("the mesh STA has received a Mesh Peering Close "
195 "message requesting to close the mesh peering");
196 case IEEE80211_REASON_MESH_MAX_RETRIES:
197 return ("the mesh STA has resent dot11MeshMaxRetries Mesh "
198 "Peering Open messages, without receiving a Mesh "
199 "Peering Confirm message");
200 case IEEE80211_REASON_MESH_CONFIRM_TIMEOUT:
201 return ("the confirmTimer for the mesh peering instance times "
202 "out");
203 case IEEE80211_REASON_MESH_INVALID_GTK:
204 return ("the mesh STA fails to unwrap the GTK or the values "
205 "in the wrapped contents do not match");
206 case IEEE80211_REASON_MESH_INCONS_PARAMS:
207 return ("the mesh STA receives inconsistent information about "
208 "the mesh parameters between Mesh Peering Management "
209 "frames");
210 case IEEE80211_REASON_MESH_INVALID_SECURITY:
211 return ("the mesh STA fails the authenticated mesh peering "
212 "exchange because due to failure in selecting "
213 "pairwise/group ciphersuite");
214 case IEEE80211_REASON_MESH_PERR_NO_PROXY:
215 return ("the mesh STA does not have proxy information for "
216 "this external destination");
217 case IEEE80211_REASON_MESH_PERR_NO_FI:
218 return ("the mesh STA does not have forwarding information "
219 "for this destination");
220 case IEEE80211_REASON_MESH_PERR_DEST_UNREACH:
221 return ("the mesh STA determines that the link to the next "
222 "hop of an active path in its forwarding information "
223 "is no longer usable");
224 case IEEE80211_REASON_MESH_MAC_ALRDY_EXISTS_MBSS:
225 return ("the MAC address of the STA already exists in the "
226 "mesh BSS");
227 case IEEE80211_REASON_MESH_CHAN_SWITCH_REG:
228 return ("the mesh STA performs channel switch to meet "
229 "regulatory requirements");
230 case IEEE80211_REASON_MESH_CHAN_SWITCH_UNSPEC:
231 return ("the mesh STA performs channel switch with "
232 "unspecified reason");
233 default:
234 return ("reserved/unknown");
235 }
236 }
237
238 static void beacon_miss(void *, int);
239 static void beacon_swmiss(void *, int);
240 static void parent_updown(void *, int);
241 static void update_mcast(void *, int);
242 static void update_promisc(void *, int);
243 static void update_channel(void *, int);
244 static void update_chw(void *, int);
245 static void vap_update_wme(void *, int);
246 static void vap_update_slot(void *, int);
247 static void restart_vaps(void *, int);
248 static void vap_update_erp_protmode(void *, int);
249 static void vap_update_preamble(void *, int);
250 static void vap_update_ht_protmode(void *, int);
251 static void ieee80211_newstate_cb(void *, int);
252 static struct ieee80211_node *vap_update_bss(struct ieee80211vap *,
253 struct ieee80211_node *);
254
255 static int
256 null_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
257 const struct ieee80211_bpf_params *params)
258 {
259
260 ic_printf(ni->ni_ic, "missing ic_raw_xmit callback, drop frame\n");
261 m_freem(m);
262 return ENETDOWN;
263 }
264
265 void
266 ieee80211_proto_attach(struct ieee80211com *ic)
267 {
268 uint8_t hdrlen;
269
270 /* override the 802.3 setting */
271 hdrlen = ic->ic_headroom
272 + sizeof(struct ieee80211_qosframe_addr4)
273 + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN
274 + IEEE80211_WEP_EXTIVLEN;
275 /* XXX no way to recalculate on ifdetach */
276 max_linkhdr_grow(ALIGN(hdrlen));
277 //ic->ic_protmode = IEEE80211_PROT_CTSONLY;
278
279 TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ic);
280 TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic);
281 TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic);
282 TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic);
283 TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, ic);
284 TASK_INIT(&ic->ic_chw_task, 0, update_chw, ic);
285 TASK_INIT(&ic->ic_restart_task, 0, restart_vaps, ic);
286
287 ic->ic_wme.wme_hipri_switch_hysteresis =
288 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
289
290 /* initialize management frame handlers */
291 ic->ic_send_mgmt = ieee80211_send_mgmt;
292 ic->ic_raw_xmit = null_raw_xmit;
293
294 ieee80211_adhoc_attach(ic);
295 ieee80211_sta_attach(ic);
296 ieee80211_wds_attach(ic);
297 ieee80211_hostap_attach(ic);
298 #ifdef IEEE80211_SUPPORT_MESH
299 ieee80211_mesh_attach(ic);
300 #endif
301 ieee80211_monitor_attach(ic);
302 }
303
304 void
305 ieee80211_proto_detach(struct ieee80211com *ic)
306 {
307 ieee80211_monitor_detach(ic);
308 #ifdef IEEE80211_SUPPORT_MESH
309 ieee80211_mesh_detach(ic);
310 #endif
311 ieee80211_hostap_detach(ic);
312 ieee80211_wds_detach(ic);
313 ieee80211_adhoc_detach(ic);
314 ieee80211_sta_detach(ic);
315 }
316
317 static void
318 null_update_beacon(struct ieee80211vap *vap, int item)
319 {
320 }
321
322 void
323 ieee80211_proto_vattach(struct ieee80211vap *vap)
324 {
325 struct ieee80211com *ic = vap->iv_ic;
326 struct ifnet *ifp = vap->iv_ifp;
327 int i;
328
329 /* override the 802.3 setting */
330 ifp->if_hdrlen = ic->ic_headroom
331 + sizeof(struct ieee80211_qosframe_addr4)
332 + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN
333 + IEEE80211_WEP_EXTIVLEN;
334
335 vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT;
336 vap->iv_fragthreshold = IEEE80211_FRAG_DEFAULT;
337 vap->iv_bmiss_max = IEEE80211_BMISS_MAX;
338 callout_init_mtx(&vap->iv_swbmiss, IEEE80211_LOCK_OBJ(ic), 0);
339 callout_init(&vap->iv_mgtsend, 1);
340 TASK_INIT(&vap->iv_nstate_task, 0, ieee80211_newstate_cb, vap);
341 TASK_INIT(&vap->iv_swbmiss_task, 0, beacon_swmiss, vap);
342 TASK_INIT(&vap->iv_wme_task, 0, vap_update_wme, vap);
343 TASK_INIT(&vap->iv_slot_task, 0, vap_update_slot, vap);
344 TASK_INIT(&vap->iv_erp_protmode_task, 0, vap_update_erp_protmode, vap);
345 TASK_INIT(&vap->iv_ht_protmode_task, 0, vap_update_ht_protmode, vap);
346 TASK_INIT(&vap->iv_preamble_task, 0, vap_update_preamble, vap);
347 /*
348 * Install default tx rate handling: no fixed rate, lowest
349 * supported rate for mgmt and multicast frames. Default
350 * max retry count. These settings can be changed by the
351 * driver and/or user applications.
352 */
353 for (i = IEEE80211_MODE_11A; i < IEEE80211_MODE_MAX; i++) {
354 if (isclr(ic->ic_modecaps, i))
355 continue;
356
357 const struct ieee80211_rateset *rs = &ic->ic_sup_rates[i];
358
359 vap->iv_txparms[i].ucastrate = IEEE80211_FIXED_RATE_NONE;
360
361 /*
362 * Setting the management rate to MCS 0 assumes that the
363 * BSS Basic rate set is empty and the BSS Basic MCS set
364 * is not.
365 *
366 * Since we're not checking this, default to the lowest
367 * defined rate for this mode.
368 *
369 * At least one 11n AP (DLINK DIR-825) is reported to drop
370 * some MCS management traffic (eg BA response frames.)
371 *
372 * See also: 9.6.0 of the 802.11n-2009 specification.
373 */
374 #ifdef NOTYET
375 if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) {
376 vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS;
377 vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS;
378 } else {
379 vap->iv_txparms[i].mgmtrate =
380 rs->rs_rates[0] & IEEE80211_RATE_VAL;
381 vap->iv_txparms[i].mcastrate =
382 rs->rs_rates[0] & IEEE80211_RATE_VAL;
383 }
384 #endif
385 vap->iv_txparms[i].mgmtrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
386 vap->iv_txparms[i].mcastrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
387 vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT;
388 }
389 vap->iv_roaming = IEEE80211_ROAMING_AUTO;
390
391 vap->iv_update_beacon = null_update_beacon;
392 vap->iv_deliver_data = ieee80211_deliver_data;
393 vap->iv_protmode = IEEE80211_PROT_CTSONLY;
394 vap->iv_update_bss = vap_update_bss;
395
396 /* attach support for operating mode */
397 ic->ic_vattach[vap->iv_opmode](vap);
398 }
399
400 void
401 ieee80211_proto_vdetach(struct ieee80211vap *vap)
402 {
403 #define FREEAPPIE(ie) do { \
404 if (ie != NULL) \
405 IEEE80211_FREE(ie, M_80211_NODE_IE); \
406 } while (0)
407 /*
408 * Detach operating mode module.
409 */
410 if (vap->iv_opdetach != NULL)
411 vap->iv_opdetach(vap);
412 /*
413 * This should not be needed as we detach when reseting
414 * the state but be conservative here since the
415 * authenticator may do things like spawn kernel threads.
416 */
417 if (vap->iv_auth->ia_detach != NULL)
418 vap->iv_auth->ia_detach(vap);
419 /*
420 * Detach any ACL'ator.
421 */
422 if (vap->iv_acl != NULL)
423 vap->iv_acl->iac_detach(vap);
424
425 FREEAPPIE(vap->iv_appie_beacon);
426 FREEAPPIE(vap->iv_appie_probereq);
427 FREEAPPIE(vap->iv_appie_proberesp);
428 FREEAPPIE(vap->iv_appie_assocreq);
429 FREEAPPIE(vap->iv_appie_assocresp);
430 FREEAPPIE(vap->iv_appie_wpa);
431 #undef FREEAPPIE
432 }
433
434 /*
435 * Simple-minded authenticator module support.
436 */
437
438 #define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1)
439 /* XXX well-known names */
440 static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
441 "wlan_internal", /* IEEE80211_AUTH_NONE */
442 "wlan_internal", /* IEEE80211_AUTH_OPEN */
443 "wlan_internal", /* IEEE80211_AUTH_SHARED */
444 "wlan_xauth", /* IEEE80211_AUTH_8021X */
445 "wlan_internal", /* IEEE80211_AUTH_AUTO */
446 "wlan_xauth", /* IEEE80211_AUTH_WPA */
447 };
448 static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
449
450 static const struct ieee80211_authenticator auth_internal = {
451 .ia_name = "wlan_internal",
452 .ia_attach = NULL,
453 .ia_detach = NULL,
454 .ia_node_join = NULL,
455 .ia_node_leave = NULL,
456 };
457
458 /*
459 * Setup internal authenticators once; they are never unregistered.
460 */
461 static void
462 ieee80211_auth_setup(void)
463 {
464 ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
465 ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
466 ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
467 }
468 SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
469
470 const struct ieee80211_authenticator *
471 ieee80211_authenticator_get(int auth)
472 {
473 if (auth >= IEEE80211_AUTH_MAX)
474 return NULL;
475 if (authenticators[auth] == NULL)
476 ieee80211_load_module(auth_modnames[auth]);
477 return authenticators[auth];
478 }
479
480 void
481 ieee80211_authenticator_register(int type,
482 const struct ieee80211_authenticator *auth)
483 {
484 if (type >= IEEE80211_AUTH_MAX)
485 return;
486 authenticators[type] = auth;
487 }
488
489 void
490 ieee80211_authenticator_unregister(int type)
491 {
492
493 if (type >= IEEE80211_AUTH_MAX)
494 return;
495 authenticators[type] = NULL;
496 }
497
498 /*
499 * Very simple-minded ACL module support.
500 */
501 /* XXX just one for now */
502 static const struct ieee80211_aclator *acl = NULL;
503
504 void
505 ieee80211_aclator_register(const struct ieee80211_aclator *iac)
506 {
507 printf("wlan: %s acl policy registered\n", iac->iac_name);
508 acl = iac;
509 }
510
511 void
512 ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
513 {
514 if (acl == iac)
515 acl = NULL;
516 printf("wlan: %s acl policy unregistered\n", iac->iac_name);
517 }
518
519 const struct ieee80211_aclator *
520 ieee80211_aclator_get(const char *name)
521 {
522 if (acl == NULL)
523 ieee80211_load_module("wlan_acl");
524 return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
525 }
526
527 void
528 ieee80211_print_essid(const uint8_t *essid, int len)
529 {
530 const uint8_t *p;
531 int i;
532
533 if (len > IEEE80211_NWID_LEN)
534 len = IEEE80211_NWID_LEN;
535 /* determine printable or not */
536 for (i = 0, p = essid; i < len; i++, p++) {
537 if (*p < ' ' || *p > 0x7e)
538 break;
539 }
540 if (i == len) {
541 printf("\"");
542 for (i = 0, p = essid; i < len; i++, p++)
543 printf("%c", *p);
544 printf("\"");
545 } else {
546 printf("0x");
547 for (i = 0, p = essid; i < len; i++, p++)
548 printf("%02x", *p);
549 }
550 }
551
552 void
553 ieee80211_dump_pkt(struct ieee80211com *ic,
554 const uint8_t *buf, int len, int rate, int rssi)
555 {
556 const struct ieee80211_frame *wh;
557 int i;
558
559 wh = (const struct ieee80211_frame *)buf;
560 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
561 case IEEE80211_FC1_DIR_NODS:
562 printf("NODS %s", ether_sprintf(wh->i_addr2));
563 printf("->%s", ether_sprintf(wh->i_addr1));
564 printf("(%s)", ether_sprintf(wh->i_addr3));
565 break;
566 case IEEE80211_FC1_DIR_TODS:
567 printf("TODS %s", ether_sprintf(wh->i_addr2));
568 printf("->%s", ether_sprintf(wh->i_addr3));
569 printf("(%s)", ether_sprintf(wh->i_addr1));
570 break;
571 case IEEE80211_FC1_DIR_FROMDS:
572 printf("FRDS %s", ether_sprintf(wh->i_addr3));
573 printf("->%s", ether_sprintf(wh->i_addr1));
574 printf("(%s)", ether_sprintf(wh->i_addr2));
575 break;
576 case IEEE80211_FC1_DIR_DSTODS:
577 printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1]));
578 printf("->%s", ether_sprintf(wh->i_addr3));
579 printf("(%s", ether_sprintf(wh->i_addr2));
580 printf("->%s)", ether_sprintf(wh->i_addr1));
581 break;
582 }
583 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
584 case IEEE80211_FC0_TYPE_DATA:
585 printf(" data");
586 break;
587 case IEEE80211_FC0_TYPE_MGT:
588 printf(" %s", ieee80211_mgt_subtype_name(wh->i_fc[0]));
589 break;
590 default:
591 printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
592 break;
593 }
594 if (IEEE80211_QOS_HAS_SEQ(wh)) {
595 const struct ieee80211_qosframe *qwh =
596 (const struct ieee80211_qosframe *)buf;
597 printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID,
598 qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : "");
599 }
600 if (IEEE80211_IS_PROTECTED(wh)) {
601 int off;
602
603 off = ieee80211_anyhdrspace(ic, wh);
604 printf(" WEP [IV %.02x %.02x %.02x",
605 buf[off+0], buf[off+1], buf[off+2]);
606 if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV)
607 printf(" %.02x %.02x %.02x",
608 buf[off+4], buf[off+5], buf[off+6]);
609 printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6);
610 }
611 if (rate >= 0)
612 printf(" %dM", rate / 2);
613 if (rssi >= 0)
614 printf(" +%d", rssi);
615 printf("\n");
616 if (len > 0) {
617 for (i = 0; i < len; i++) {
618 if ((i & 1) == 0)
619 printf(" ");
620 printf("%02x", buf[i]);
621 }
622 printf("\n");
623 }
624 }
625
626 static __inline int
627 findrix(const struct ieee80211_rateset *rs, int r)
628 {
629 int i;
630
631 for (i = 0; i < rs->rs_nrates; i++)
632 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r)
633 return i;
634 return -1;
635 }
636
637 int
638 ieee80211_fix_rate(struct ieee80211_node *ni,
639 struct ieee80211_rateset *nrs, int flags)
640 {
641 struct ieee80211vap *vap = ni->ni_vap;
642 struct ieee80211com *ic = ni->ni_ic;
643 int i, j, rix, error;
644 int okrate, badrate, fixedrate, ucastrate;
645 const struct ieee80211_rateset *srs;
646 uint8_t r;
647
648 error = 0;
649 okrate = badrate = 0;
650 ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate;
651 if (ucastrate != IEEE80211_FIXED_RATE_NONE) {
652 /*
653 * Workaround awkwardness with fixed rate. We are called
654 * to check both the legacy rate set and the HT rate set
655 * but we must apply any legacy fixed rate check only to the
656 * legacy rate set and vice versa. We cannot tell what type
657 * of rate set we've been given (legacy or HT) but we can
658 * distinguish the fixed rate type (MCS have 0x80 set).
659 * So to deal with this the caller communicates whether to
660 * check MCS or legacy rate using the flags and we use the
661 * type of any fixed rate to avoid applying an MCS to a
662 * legacy rate and vice versa.
663 */
664 if (ucastrate & 0x80) {
665 if (flags & IEEE80211_F_DOFRATE)
666 flags &= ~IEEE80211_F_DOFRATE;
667 } else if ((ucastrate & 0x80) == 0) {
668 if (flags & IEEE80211_F_DOFMCS)
669 flags &= ~IEEE80211_F_DOFMCS;
670 }
671 /* NB: required to make MCS match below work */
672 ucastrate &= IEEE80211_RATE_VAL;
673 }
674 fixedrate = IEEE80211_FIXED_RATE_NONE;
675 /*
676 * XXX we are called to process both MCS and legacy rates;
677 * we must use the appropriate basic rate set or chaos will
678 * ensue; for now callers that want MCS must supply
679 * IEEE80211_F_DOBRS; at some point we'll need to split this
680 * function so there are two variants, one for MCS and one
681 * for legacy rates.
682 */
683 if (flags & IEEE80211_F_DOBRS)
684 srs = (const struct ieee80211_rateset *)
685 ieee80211_get_suphtrates(ic, ni->ni_chan);
686 else
687 srs = ieee80211_get_suprates(ic, ni->ni_chan);
688 for (i = 0; i < nrs->rs_nrates; ) {
689 if (flags & IEEE80211_F_DOSORT) {
690 /*
691 * Sort rates.
692 */
693 for (j = i + 1; j < nrs->rs_nrates; j++) {
694 if (IEEE80211_RV(nrs->rs_rates[i]) >
695 IEEE80211_RV(nrs->rs_rates[j])) {
696 r = nrs->rs_rates[i];
697 nrs->rs_rates[i] = nrs->rs_rates[j];
698 nrs->rs_rates[j] = r;
699 }
700 }
701 }
702 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
703 badrate = r;
704 /*
705 * Check for fixed rate.
706 */
707 if (r == ucastrate)
708 fixedrate = r;
709 /*
710 * Check against supported rates.
711 */
712 rix = findrix(srs, r);
713 if (flags & IEEE80211_F_DONEGO) {
714 if (rix < 0) {
715 /*
716 * A rate in the node's rate set is not
717 * supported. If this is a basic rate and we
718 * are operating as a STA then this is an error.
719 * Otherwise we just discard/ignore the rate.
720 */
721 if ((flags & IEEE80211_F_JOIN) &&
722 (nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
723 error++;
724 } else if ((flags & IEEE80211_F_JOIN) == 0) {
725 /*
726 * Overwrite with the supported rate
727 * value so any basic rate bit is set.
728 */
729 nrs->rs_rates[i] = srs->rs_rates[rix];
730 }
731 }
732 if ((flags & IEEE80211_F_DODEL) && rix < 0) {
733 /*
734 * Delete unacceptable rates.
735 */
736 nrs->rs_nrates--;
737 for (j = i; j < nrs->rs_nrates; j++)
738 nrs->rs_rates[j] = nrs->rs_rates[j + 1];
739 nrs->rs_rates[j] = 0;
740 continue;
741 }
742 if (rix >= 0)
743 okrate = nrs->rs_rates[i];
744 i++;
745 }
746 if (okrate == 0 || error != 0 ||
747 ((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) &&
748 fixedrate != ucastrate)) {
749 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni,
750 "%s: flags 0x%x okrate %d error %d fixedrate 0x%x "
751 "ucastrate %x\n", __func__, fixedrate, ucastrate, flags);
752 return badrate | IEEE80211_RATE_BASIC;
753 } else
754 return IEEE80211_RV(okrate);
755 }
756
757 /*
758 * Reset 11g-related state.
759 *
760 * This is for per-VAP ERP/11g state.
761 *
762 * Eventually everything in ieee80211_reset_erp() will be
763 * per-VAP and in here.
764 */
765 void
766 ieee80211_vap_reset_erp(struct ieee80211vap *vap)
767 {
768 struct ieee80211com *ic = vap->iv_ic;
769
770 vap->iv_nonerpsta = 0;
771 vap->iv_longslotsta = 0;
772
773 vap->iv_flags &= ~IEEE80211_F_USEPROT;
774 /*
775 * Set short preamble and ERP barker-preamble flags.
776 */
777 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
778 (vap->iv_caps & IEEE80211_C_SHPREAMBLE)) {
779 vap->iv_flags |= IEEE80211_F_SHPREAMBLE;
780 vap->iv_flags &= ~IEEE80211_F_USEBARKER;
781 } else {
782 vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE;
783 vap->iv_flags |= IEEE80211_F_USEBARKER;
784 }
785
786 /*
787 * Short slot time is enabled only when operating in 11g
788 * and not in an IBSS. We must also honor whether or not
789 * the driver is capable of doing it.
790 */
791 ieee80211_vap_set_shortslottime(vap,
792 IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
793 IEEE80211_IS_CHAN_HT(ic->ic_curchan) ||
794 (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
795 vap->iv_opmode == IEEE80211_M_HOSTAP &&
796 (ic->ic_caps & IEEE80211_C_SHSLOT)));
797 }
798
799 /*
800 * Reset 11g-related state.
801 *
802 * Note this resets the global state and a caller should schedule
803 * a re-check of all the VAPs after setup to update said state.
804 */
805 void
806 ieee80211_reset_erp(struct ieee80211com *ic)
807 {
808 #if 0
809 ic->ic_flags &= ~IEEE80211_F_USEPROT;
810 /*
811 * Set short preamble and ERP barker-preamble flags.
812 */
813 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
814 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
815 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
816 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
817 } else {
818 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
819 ic->ic_flags |= IEEE80211_F_USEBARKER;
820 }
821 #endif
822 /* XXX TODO: schedule a new per-VAP ERP calculation */
823 }
824
825 static struct ieee80211_node *
826 vap_update_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
827 {
828 struct ieee80211_node *obss;
829
830 obss = vap->iv_bss;
831 vap->iv_bss = ni;
832
833 return (obss);
834 }
835
836 /*
837 * Deferred slot time update.
838 *
839 * For per-VAP slot time configuration, call the VAP
840 * method if the VAP requires it. Otherwise, just call the
841 * older global method.
842 *
843 * If the per-VAP method is called then it's expected that
844 * the driver/firmware will take care of turning the per-VAP
845 * flags into slot time configuration.
846 *
847 * If the per-VAP method is not called then the global flags will be
848 * flipped into sync with the VAPs; ic_flags IEEE80211_F_SHSLOT will
849 * be set only if all of the vaps will have it set.
850 *
851 * Look at the comments for vap_update_erp_protmode() for more
852 * background; this assumes all VAPs are on the same channel.
853 */
854 static void
855 vap_update_slot(void *arg, int npending)
856 {
857 struct ieee80211vap *vap = arg;
858 struct ieee80211com *ic = vap->iv_ic;
859 struct ieee80211vap *iv;
860 int num_shslot = 0, num_lgslot = 0;
861
862 /*
863 * Per-VAP path - we've already had the flags updated;
864 * so just notify the driver and move on.
865 */
866 if (vap->iv_updateslot != NULL) {
867 vap->iv_updateslot(vap);
868 return;
869 }
870
871 /*
872 * Iterate over all of the VAP flags to update the
873 * global flag.
874 *
875 * If all vaps have short slot enabled then flip on
876 * short slot. If any vap has it disabled then
877 * we leave it globally disabled. This should provide
878 * correct behaviour in a multi-BSS scenario where
879 * at least one VAP has short slot disabled for some
880 * reason.
881 */
882 IEEE80211_LOCK(ic);
883 TAILQ_FOREACH(iv, &ic->ic_vaps, iv_next) {
884 if (iv->iv_flags & IEEE80211_F_SHSLOT)
885 num_shslot++;
886 else
887 num_lgslot++;
888 }
889
890 /*
891 * It looks backwards but - if the number of short slot VAPs
892 * is zero then we're not short slot. Else, we have one
893 * or more short slot VAPs and we're checking to see if ANY
894 * of them have short slot disabled.
895 */
896 if (num_shslot == 0)
897 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
898 else if (num_lgslot == 0)
899 ic->ic_flags |= IEEE80211_F_SHSLOT;
900 IEEE80211_UNLOCK(ic);
901
902 /*
903 * Call the driver with our new global slot time flags.
904 */
905 if (ic->ic_updateslot != NULL)
906 ic->ic_updateslot(ic);
907 }
908
909 /*
910 * Deferred ERP protmode update.
911 *
912 * This currently calculates the global ERP protection mode flag
913 * based on each of the VAPs. Any VAP with it enabled is enough
914 * for the global flag to be enabled. All VAPs with it disabled
915 * is enough for it to be disabled.
916 *
917 * This may make sense right now for the supported hardware where
918 * net80211 is controlling the single channel configuration, but
919 * offload firmware that's doing channel changes (eg off-channel
920 * TDLS, off-channel STA, off-channel P2P STA/AP) may get some
921 * silly looking flag updates.
922 *
923 * Ideally the protection mode calculation is done based on the
924 * channel, and all VAPs using that channel will inherit it.
925 * But until that's what net80211 does, this wil have to do.
926 */
927 static void
928 vap_update_erp_protmode(void *arg, int npending)
929 {
930 struct ieee80211vap *vap = arg;
931 struct ieee80211com *ic = vap->iv_ic;
932 struct ieee80211vap *iv;
933 int enable_protmode = 0;
934 int non_erp_present = 0;
935
936 /*
937 * Iterate over all of the VAPs to calculate the overlapping
938 * ERP protection mode configuration and ERP present math.
939 *
940 * For now we assume that if a driver can handle this per-VAP
941 * then it'll ignore the ic->ic_protmode variant and instead
942 * will look at the vap related flags.
943 */
944 IEEE80211_LOCK(ic);
945 TAILQ_FOREACH(iv, &ic->ic_vaps, iv_next) {
946 if (iv->iv_flags & IEEE80211_F_USEPROT)
947 enable_protmode = 1;
948 if (iv->iv_flags_ext & IEEE80211_FEXT_NONERP_PR)
949 non_erp_present = 1;
950 }
951
952 if (enable_protmode)
953 ic->ic_flags |= IEEE80211_F_USEPROT;
954 else
955 ic->ic_flags &= ~IEEE80211_F_USEPROT;
956
957 if (non_erp_present)
958 ic->ic_flags_ext |= IEEE80211_FEXT_NONERP_PR;
959 else
960 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
961
962 /* Beacon update on all VAPs */
963 ieee80211_notify_erp_locked(ic);
964
965 IEEE80211_UNLOCK(ic);
966
967 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
968 "%s: called; enable_protmode=%d, non_erp_present=%d\n",
969 __func__, enable_protmode, non_erp_present);
970
971 /*
972 * Now that the global configuration flags are calculated,
973 * notify the VAP about its configuration.
974 *
975 * The global flags will be used when assembling ERP IEs
976 * for multi-VAP operation, even if it's on a different
977 * channel. Yes, that's going to need fixing in the
978 * future.
979 */
980 if (vap->iv_erp_protmode_update != NULL)
981 vap->iv_erp_protmode_update(vap);
982 }
983
984 /*
985 * Deferred ERP short preamble/barker update.
986 *
987 * All VAPs need to use short preamble for it to be globally
988 * enabled or not.
989 *
990 * Look at the comments for vap_update_erp_protmode() for more
991 * background; this assumes all VAPs are on the same channel.
992 */
993 static void
994 vap_update_preamble(void *arg, int npending)
995 {
996 struct ieee80211vap *vap = arg;
997 struct ieee80211com *ic = vap->iv_ic;
998 struct ieee80211vap *iv;
999 int barker_count = 0, short_preamble_count = 0, count = 0;
1000
1001 /*
1002 * Iterate over all of the VAPs to calculate the overlapping
1003 * short or long preamble configuration.
1004 *
1005 * For now we assume that if a driver can handle this per-VAP
1006 * then it'll ignore the ic->ic_flags variant and instead
1007 * will look at the vap related flags.
1008 */
1009 IEEE80211_LOCK(ic);
1010 TAILQ_FOREACH(iv, &ic->ic_vaps, iv_next) {
1011 if (iv->iv_flags & IEEE80211_F_USEBARKER)
1012 barker_count++;
1013 if (iv->iv_flags & IEEE80211_F_SHPREAMBLE)
1014 short_preamble_count++;
1015 count++;
1016 }
1017
1018 /*
1019 * As with vap_update_erp_protmode(), the global flags are
1020 * currently used for beacon IEs.
1021 */
1022 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1023 "%s: called; barker_count=%d, short_preamble_count=%d\n",
1024 __func__, barker_count, short_preamble_count);
1025
1026 /*
1027 * Only flip on short preamble if all of the VAPs support
1028 * it.
1029 */
1030 if (barker_count == 0 && short_preamble_count == count) {
1031 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
1032 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
1033 } else {
1034 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
1035 ic->ic_flags |= IEEE80211_F_USEBARKER;
1036 }
1037 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1038 "%s: global barker=%d preamble=%d\n",
1039 __func__,
1040 !! (ic->ic_flags & IEEE80211_F_USEBARKER),
1041 !! (ic->ic_flags & IEEE80211_F_SHPREAMBLE));
1042
1043 /* Beacon update on all VAPs */
1044 ieee80211_notify_erp_locked(ic);
1045
1046 IEEE80211_UNLOCK(ic);
1047
1048 /* Driver notification */
1049 if (vap->iv_erp_protmode_update != NULL)
1050 vap->iv_preamble_update(vap);
1051 }
1052
1053 /*
1054 * Deferred HT protmode update and beacon update.
1055 *
1056 * Look at the comments for vap_update_erp_protmode() for more
1057 * background; this assumes all VAPs are on the same channel.
1058 */
1059 static void
1060 vap_update_ht_protmode(void *arg, int npending)
1061 {
1062 struct ieee80211vap *vap = arg;
1063 struct ieee80211vap *iv;
1064 struct ieee80211com *ic = vap->iv_ic;
1065 int num_vaps = 0, num_pure = 0;
1066 int num_optional = 0, num_ht2040 = 0, num_nonht = 0;
1067 int num_ht_sta = 0, num_ht40_sta = 0, num_sta = 0;
1068 int num_nonhtpr = 0;
1069
1070 /*
1071 * Iterate over all of the VAPs to calculate everything.
1072 *
1073 * There are a few different flags to calculate:
1074 *
1075 * + whether there's HT only or HT+legacy stations;
1076 * + whether there's HT20, HT40, or HT20+HT40 stations;
1077 * + whether the desired protection mode is mixed, pure or
1078 * one of the two above.
1079 *
1080 * For now we assume that if a driver can handle this per-VAP
1081 * then it'll ignore the ic->ic_htprotmode / ic->ic_curhtprotmode
1082 * variant and instead will look at the vap related variables.
1083 *
1084 * XXX TODO: non-greenfield STAs present (IEEE80211_HTINFO_NONGF_PRESENT) !
1085 */
1086
1087 IEEE80211_LOCK(ic);
1088 TAILQ_FOREACH(iv, &ic->ic_vaps, iv_next) {
1089 num_vaps++;
1090 /* overlapping BSSes advertising non-HT status present */
1091 if (iv->iv_flags_ht & IEEE80211_FHT_NONHT_PR)
1092 num_nonht++;
1093 /* Operating mode flags */
1094 if (iv->iv_curhtprotmode & IEEE80211_HTINFO_NONHT_PRESENT)
1095 num_nonhtpr++;
1096 switch (iv->iv_curhtprotmode & IEEE80211_HTINFO_OPMODE) {
1097 case IEEE80211_HTINFO_OPMODE_PURE:
1098 num_pure++;
1099 break;
1100 case IEEE80211_HTINFO_OPMODE_PROTOPT:
1101 num_optional++;
1102 break;
1103 case IEEE80211_HTINFO_OPMODE_HT20PR:
1104 num_ht2040++;
1105 break;
1106 }
1107
1108 IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N,
1109 "%s: vap %s: nonht_pr=%d, curhtprotmode=0x%02x\n",
1110 __func__,
1111 ieee80211_get_vap_ifname(iv),
1112 !! (iv->iv_flags_ht & IEEE80211_FHT_NONHT_PR),
1113 iv->iv_curhtprotmode);
1114
1115 num_ht_sta += iv->iv_ht_sta_assoc;
1116 num_ht40_sta += iv->iv_ht40_sta_assoc;
1117 num_sta += iv->iv_sta_assoc;
1118 }
1119
1120 /*
1121 * Step 1 - if any VAPs indicate NONHT_PR set (overlapping BSS
1122 * non-HT present), set it here. This shouldn't be used by
1123 * anything but the old overlapping BSS logic so if any drivers
1124 * consume it, it's up to date.
1125 */
1126 if (num_nonht > 0)
1127 ic->ic_flags_ht |= IEEE80211_FHT_NONHT_PR;
1128 else
1129 ic->ic_flags_ht &= ~IEEE80211_FHT_NONHT_PR;
1130
1131 /*
1132 * Step 2 - default HT protection mode to MIXED (802.11-2016 10.26.3.1.)
1133 *
1134 * + If all VAPs are PURE, we can stay PURE.
1135 * + If all VAPs are PROTOPT, we can go to PROTOPT.
1136 * + If any VAP has HT20PR then it sees at least a HT40+HT20 station.
1137 * Note that we may have a VAP with one HT20 and a VAP with one HT40;
1138 * So we look at the sum ht and sum ht40 sta counts; if we have a
1139 * HT station and the HT20 != HT40 count, we have to do HT20PR here.
1140 * Note all stations need to be HT for this to be an option.
1141 * + The fall-through is MIXED, because it means we have some odd
1142 * non HT40-involved combination of opmode and this is the most
1143 * sensible default.
1144 */
1145 ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_MIXED;
1146
1147 if (num_pure == num_vaps)
1148 ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_PURE;
1149
1150 if (num_optional == num_vaps)
1151 ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_PROTOPT;
1152
1153 /*
1154 * Note: we need /a/ HT40 station somewhere for this to
1155 * be a possibility.
1156 */
1157 if ((num_ht2040 > 0) ||
1158 ((num_ht_sta > 0) && (num_ht40_sta > 0) &&
1159 (num_ht_sta != num_ht40_sta)))
1160 ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_HT20PR;
1161
1162 /*
1163 * Step 3 - if any of the stations across the VAPs are
1164 * non-HT then this needs to be flipped back to MIXED.
1165 */
1166 if (num_ht_sta != num_sta)
1167 ic->ic_curhtprotmode = IEEE80211_HTINFO_OPMODE_MIXED;
1168
1169 /*
1170 * Step 4 - If we see any overlapping BSS non-HT stations
1171 * via beacons then flip on NONHT_PRESENT.
1172 */
1173 if (num_nonhtpr > 0)
1174 ic->ic_curhtprotmode |= IEEE80211_HTINFO_NONHT_PRESENT;
1175
1176 /* Notify all VAPs to potentially update their beacons */
1177 TAILQ_FOREACH(iv, &ic->ic_vaps, iv_next)
1178 ieee80211_htinfo_notify(iv);
1179
1180 IEEE80211_UNLOCK(ic);
1181
1182 IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N,
1183 "%s: global: nonht_pr=%d ht_opmode=0x%02x\n",
1184 __func__,
1185 !! (ic->ic_flags_ht & IEEE80211_FHT_NONHT_PR),
1186 ic->ic_curhtprotmode);
1187
1188 /* Driver update */
1189 if (vap->iv_erp_protmode_update != NULL)
1190 vap->iv_ht_protmode_update(vap);
1191 }
1192
1193 /*
1194 * Set the short slot time state and notify the driver.
1195 *
1196 * This is the per-VAP slot time state.
1197 */
1198 void
1199 ieee80211_vap_set_shortslottime(struct ieee80211vap *vap, int onoff)
1200 {
1201 struct ieee80211com *ic = vap->iv_ic;
1202
1203 /* XXX lock? */
1204
1205 /*
1206 * Only modify the per-VAP slot time.
1207 */
1208 if (onoff)
1209 vap->iv_flags |= IEEE80211_F_SHSLOT;
1210 else
1211 vap->iv_flags &= ~IEEE80211_F_SHSLOT;
1212
1213 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1214 "%s: called; onoff=%d\n", __func__, onoff);
1215 /* schedule the deferred slot flag update and update */
1216 ieee80211_runtask(ic, &vap->iv_slot_task);
1217 }
1218
1219 /*
1220 * Update the VAP short /long / barker preamble state and
1221 * update beacon state if needed.
1222 *
1223 * For now it simply copies the global flags into the per-vap
1224 * flags and schedules the callback. Later this will support
1225 * both global and per-VAP flags, especially useful for
1226 * and STA+STA multi-channel operation (eg p2p).
1227 */
1228 void
1229 ieee80211_vap_update_preamble(struct ieee80211vap *vap)
1230 {
1231 struct ieee80211com *ic = vap->iv_ic;
1232
1233 /* XXX lock? */
1234
1235 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1236 "%s: called\n", __func__);
1237 /* schedule the deferred slot flag update and update */
1238 ieee80211_runtask(ic, &vap->iv_preamble_task);
1239 }
1240
1241 /*
1242 * Update the VAP 11g protection mode and update beacon state
1243 * if needed.
1244 */
1245 void
1246 ieee80211_vap_update_erp_protmode(struct ieee80211vap *vap)
1247 {
1248 struct ieee80211com *ic = vap->iv_ic;
1249
1250 /* XXX lock? */
1251
1252 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1253 "%s: called\n", __func__);
1254 /* schedule the deferred slot flag update and update */
1255 ieee80211_runtask(ic, &vap->iv_erp_protmode_task);
1256 }
1257
1258 /*
1259 * Update the VAP 11n protection mode and update beacon state
1260 * if needed.
1261 */
1262 void
1263 ieee80211_vap_update_ht_protmode(struct ieee80211vap *vap)
1264 {
1265 struct ieee80211com *ic = vap->iv_ic;
1266
1267 /* XXX lock? */
1268
1269 IEEE80211_DPRINTF(vap, IEEE80211_MSG_DEBUG,
1270 "%s: called\n", __func__);
1271 /* schedule the deferred protmode update */
1272 ieee80211_runtask(ic, &vap->iv_ht_protmode_task);
1273 }
1274
1275 /*
1276 * Check if the specified rate set supports ERP.
1277 * NB: the rate set is assumed to be sorted.
1278 */
1279 int
1280 ieee80211_iserp_rateset(const struct ieee80211_rateset *rs)
1281 {
1282 static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
1283 int i, j;
1284
1285 if (rs->rs_nrates < nitems(rates))
1286 return 0;
1287 for (i = 0; i < nitems(rates); i++) {
1288 for (j = 0; j < rs->rs_nrates; j++) {
1289 int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
1290 if (rates[i] == r)
1291 goto next;
1292 if (r > rates[i])
1293 return 0;
1294 }
1295 return 0;
1296 next:
1297 ;
1298 }
1299 return 1;
1300 }
1301
1302 /*
1303 * Mark the basic rates for the rate table based on the
1304 * operating mode. For real 11g we mark all the 11b rates
1305 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only
1306 * 11b rates. There's also a pseudo 11a-mode used to mark only
1307 * the basic OFDM rates.
1308 */
1309 static void
1310 setbasicrates(struct ieee80211_rateset *rs,
1311 enum ieee80211_phymode mode, int add)
1312 {
1313 static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = {
1314 [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } },
1315 [IEEE80211_MODE_11B] = { 2, { 2, 4 } },
1316 /* NB: mixed b/g */
1317 [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } },
1318 [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } },
1319 [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } },
1320 [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } },
1321 [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } },
1322 [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } },
1323 [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } },
1324 /* NB: mixed b/g */
1325 [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } },
1326 /* NB: mixed b/g */
1327 [IEEE80211_MODE_VHT_2GHZ] = { 4, { 2, 4, 11, 22 } },
1328 [IEEE80211_MODE_VHT_5GHZ] = { 3, { 12, 24, 48 } },
1329 };
1330 int i, j;
1331
1332 for (i = 0; i < rs->rs_nrates; i++) {
1333 if (!add)
1334 rs->rs_rates[i] &= IEEE80211_RATE_VAL;
1335 for (j = 0; j < basic[mode].rs_nrates; j++)
1336 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
1337 rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
1338 break;
1339 }
1340 }
1341 }
1342
1343 /*
1344 * Set the basic rates in a rate set.
1345 */
1346 void
1347 ieee80211_setbasicrates(struct ieee80211_rateset *rs,
1348 enum ieee80211_phymode mode)
1349 {
1350 setbasicrates(rs, mode, 0);
1351 }
1352
1353 /*
1354 * Add basic rates to a rate set.
1355 */
1356 void
1357 ieee80211_addbasicrates(struct ieee80211_rateset *rs,
1358 enum ieee80211_phymode mode)
1359 {
1360 setbasicrates(rs, mode, 1);
1361 }
1362
1363 /*
1364 * WME protocol support.
1365 *
1366 * The default 11a/b/g/n parameters come from the WiFi Alliance WMM
1367 * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n
1368 * Draft 2.0 Test Plan (Appendix D).
1369 *
1370 * Static/Dynamic Turbo mode settings come from Atheros.
1371 */
1372 typedef struct phyParamType {
1373 uint8_t aifsn;
1374 uint8_t logcwmin;
1375 uint8_t logcwmax;
1376 uint16_t txopLimit;
1377 uint8_t acm;
1378 } paramType;
1379
1380 static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
1381 [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 },
1382 [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 },
1383 [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 },
1384 [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 },
1385 [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 },
1386 [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 },
1387 [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 },
1388 [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 },
1389 [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 },
1390 [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 },
1391 [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 },
1392 [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 },
1393 [IEEE80211_MODE_VHT_2GHZ] = { 3, 4, 6, 0, 0 },
1394 [IEEE80211_MODE_VHT_5GHZ] = { 3, 4, 6, 0, 0 },
1395 };
1396 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
1397 [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 },
1398 [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 },
1399 [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 },
1400 [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 },
1401 [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 },
1402 [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 },
1403 [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 },
1404 [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 },
1405 [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 },
1406 [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 },
1407 [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 },
1408 [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 },
1409 [IEEE80211_MODE_VHT_2GHZ] = { 7, 4, 10, 0, 0 },
1410 [IEEE80211_MODE_VHT_5GHZ] = { 7, 4, 10, 0, 0 },
1411 };
1412 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
1413 [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 },
1414 [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 },
1415 [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 },
1416 [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 },
1417 [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 },
1418 [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 },
1419 [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 },
1420 [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 },
1421 [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 },
1422 [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 },
1423 [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 },
1424 [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 },
1425 [IEEE80211_MODE_VHT_2GHZ] = { 1, 3, 4, 94, 0 },
1426 [IEEE80211_MODE_VHT_5GHZ] = { 1, 3, 4, 94, 0 },
1427 };
1428 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
1429 [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 },
1430 [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 },
1431 [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 },
1432 [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 },
1433 [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 },
1434 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
1435 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
1436 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
1437 [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 },
1438 [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 },
1439 [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 },
1440 [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 },
1441 [IEEE80211_MODE_VHT_2GHZ] = { 1, 2, 3, 47, 0 },
1442 [IEEE80211_MODE_VHT_5GHZ] = { 1, 2, 3, 47, 0 },
1443 };
1444
1445 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
1446 [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 },
1447 [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 },
1448 [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 },
1449 [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 },
1450 [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 },
1451 [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 },
1452 [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 },
1453 [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 },
1454 [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 },
1455 [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 },
1456 [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 },
1457 [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 },
1458 };
1459 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
1460 [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 },
1461 [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 },
1462 [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 },
1463 [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 },
1464 [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 },
1465 [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 },
1466 [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 },
1467 [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 },
1468 [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 },
1469 [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 },
1470 [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 },
1471 [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 },
1472 };
1473 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
1474 [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 },
1475 [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 },
1476 [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 },
1477 [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 },
1478 [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 },
1479 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
1480 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
1481 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
1482 [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 },
1483 [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 },
1484 [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 },
1485 [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 },
1486 };
1487
1488 static void
1489 _setifsparams(struct wmeParams *wmep, const paramType *phy)
1490 {
1491 wmep->wmep_aifsn = phy->aifsn;
1492 wmep->wmep_logcwmin = phy->logcwmin;
1493 wmep->wmep_logcwmax = phy->logcwmax;
1494 wmep->wmep_txopLimit = phy->txopLimit;
1495 }
1496
1497 static void
1498 setwmeparams(struct ieee80211vap *vap, const char *type, int ac,
1499 struct wmeParams *wmep, const paramType *phy)
1500 {
1501 wmep->wmep_acm = phy->acm;
1502 _setifsparams(wmep, phy);
1503
1504 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1505 "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n",
1506 ieee80211_wme_acnames[ac], type,
1507 wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin,
1508 wmep->wmep_logcwmax, wmep->wmep_txopLimit);
1509 }
1510
1511 static void
1512 ieee80211_wme_initparams_locked(struct ieee80211vap *vap)
1513 {
1514 struct ieee80211com *ic = vap->iv_ic;
1515 struct ieee80211_wme_state *wme = &ic->ic_wme;
1516 const paramType *pPhyParam, *pBssPhyParam;
1517 struct wmeParams *wmep;
1518 enum ieee80211_phymode mode;
1519 int i;
1520
1521 IEEE80211_LOCK_ASSERT(ic);
1522
1523 if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1)
1524 return;
1525
1526 /*
1527 * Clear the wme cap_info field so a qoscount from a previous
1528 * vap doesn't confuse later code which only parses the beacon
1529 * field and updates hardware when said field changes.
1530 * Otherwise the hardware is programmed with defaults, not what
1531 * the beacon actually announces.
1532 *
1533 * Note that we can't ever have 0xff as an actual value;
1534 * the only valid values are 0..15.
1535 */
1536 wme->wme_wmeChanParams.cap_info = 0xfe;
1537
1538 /*
1539 * Select mode; we can be called early in which case we
1540 * always use auto mode. We know we'll be called when
1541 * entering the RUN state with bsschan setup properly
1542 * so state will eventually get set correctly
1543 */
1544 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
1545 mode = ieee80211_chan2mode(ic->ic_bsschan);
1546 else
1547 mode = IEEE80211_MODE_AUTO;
1548 for (i = 0; i < WME_NUM_AC; i++) {
1549 switch (i) {
1550 case WME_AC_BK:
1551 pPhyParam = &phyParamForAC_BK[mode];
1552 pBssPhyParam = &phyParamForAC_BK[mode];
1553 break;
1554 case WME_AC_VI:
1555 pPhyParam = &phyParamForAC_VI[mode];
1556 pBssPhyParam = &bssPhyParamForAC_VI[mode];
1557 break;
1558 case WME_AC_VO:
1559 pPhyParam = &phyParamForAC_VO[mode];
1560 pBssPhyParam = &bssPhyParamForAC_VO[mode];
1561 break;
1562 case WME_AC_BE:
1563 default:
1564 pPhyParam = &phyParamForAC_BE[mode];
1565 pBssPhyParam = &bssPhyParamForAC_BE[mode];
1566 break;
1567 }
1568 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
1569 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
1570 setwmeparams(vap, "chan", i, wmep, pPhyParam);
1571 } else {
1572 setwmeparams(vap, "chan", i, wmep, pBssPhyParam);
1573 }
1574 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
1575 setwmeparams(vap, "bss ", i, wmep, pBssPhyParam);
1576 }
1577 /* NB: check ic_bss to avoid NULL deref on initial attach */
1578 if (vap->iv_bss != NULL) {
1579 /*
1580 * Calculate aggressive mode switching threshold based
1581 * on beacon interval. This doesn't need locking since
1582 * we're only called before entering the RUN state at
1583 * which point we start sending beacon frames.
1584 */
1585 wme->wme_hipri_switch_thresh =
1586 (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100;
1587 wme->wme_flags &= ~WME_F_AGGRMODE;
1588 ieee80211_wme_updateparams(vap);
1589 }
1590 }
1591
1592 void
1593 ieee80211_wme_initparams(struct ieee80211vap *vap)
1594 {
1595 struct ieee80211com *ic = vap->iv_ic;
1596
1597 IEEE80211_LOCK(ic);
1598 ieee80211_wme_initparams_locked(vap);
1599 IEEE80211_UNLOCK(ic);
1600 }
1601
1602 /*
1603 * Update WME parameters for ourself and the BSS.
1604 */
1605 void
1606 ieee80211_wme_updateparams_locked(struct ieee80211vap *vap)
1607 {
1608 static const paramType aggrParam[IEEE80211_MODE_MAX] = {
1609 [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 },
1610 [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 },
1611 [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 },
1612 [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 },
1613 [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 },
1614 [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 },
1615 [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 },
1616 [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 },
1617 [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 },
1618 [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 },
1619 [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
1620 [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
1621 [IEEE80211_MODE_VHT_2GHZ] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
1622 [IEEE80211_MODE_VHT_5GHZ] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
1623 };
1624 struct ieee80211com *ic = vap->iv_ic;
1625 struct ieee80211_wme_state *wme = &ic->ic_wme;
1626 const struct wmeParams *wmep;
1627 struct wmeParams *chanp, *bssp;
1628 enum ieee80211_phymode mode;
1629 int i;
1630 int do_aggrmode = 0;
1631
1632 /*
1633 * Set up the channel access parameters for the physical
1634 * device. First populate the configured settings.
1635 */
1636 for (i = 0; i < WME_NUM_AC; i++) {
1637 chanp = &wme->wme_chanParams.cap_wmeParams[i];
1638 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
1639 chanp->wmep_aifsn = wmep->wmep_aifsn;
1640 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
1641 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
1642 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
1643
1644 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
1645 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
1646 chanp->wmep_aifsn = wmep->wmep_aifsn;
1647 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
1648 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
1649 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
1650 }
1651
1652 /*
1653 * Select mode; we can be called early in which case we
1654 * always use auto mode. We know we'll be called when
1655 * entering the RUN state with bsschan setup properly
1656 * so state will eventually get set correctly
1657 */
1658 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
1659 mode = ieee80211_chan2mode(ic->ic_bsschan);
1660 else
1661 mode = IEEE80211_MODE_AUTO;
1662
1663 /*
1664 * This implements aggressive mode as found in certain
1665 * vendors' AP's. When there is significant high
1666 * priority (VI/VO) traffic in the BSS throttle back BE
1667 * traffic by using conservative parameters. Otherwise
1668 * BE uses aggressive params to optimize performance of
1669 * legacy/non-QoS traffic.
1670 */
1671
1672 /* Hostap? Only if aggressive mode is enabled */
1673 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
1674 (wme->wme_flags & WME_F_AGGRMODE) != 0)
1675 do_aggrmode = 1;
1676
1677 /*
1678 * Station? Only if we're in a non-QoS BSS.
1679 */
1680 else if ((vap->iv_opmode == IEEE80211_M_STA &&
1681 (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0))
1682 do_aggrmode = 1;
1683
1684 /*
1685 * IBSS? Only if we we have WME enabled.
1686 */
1687 else if ((vap->iv_opmode == IEEE80211_M_IBSS) &&
1688 (vap->iv_flags & IEEE80211_F_WME))
1689 do_aggrmode = 1;
1690
1691 /*
1692 * If WME is disabled on this VAP, default to aggressive mode
1693 * regardless of the configuration.
1694 */
1695 if ((vap->iv_flags & IEEE80211_F_WME) == 0)
1696 do_aggrmode = 1;
1697
1698 /* XXX WDS? */
1699
1700 /* XXX MBSS? */
1701
1702 if (do_aggrmode) {
1703 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
1704 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
1705
1706 chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn;
1707 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
1708 aggrParam[mode].logcwmin;
1709 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
1710 aggrParam[mode].logcwmax;
1711 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
1712 (vap->iv_flags & IEEE80211_F_BURST) ?
1713 aggrParam[mode].txopLimit : 0;
1714 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1715 "update %s (chan+bss) [acm %u aifsn %u logcwmin %u "
1716 "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE],
1717 chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin,
1718 chanp->wmep_logcwmax, chanp->wmep_txopLimit);
1719 }
1720
1721 /*
1722 * Change the contention window based on the number of associated
1723 * stations. If the number of associated stations is 1 and
1724 * aggressive mode is enabled, lower the contention window even
1725 * further.
1726 */
1727 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
1728 vap->iv_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
1729 static const uint8_t logCwMin[IEEE80211_MODE_MAX] = {
1730 [IEEE80211_MODE_AUTO] = 3,
1731 [IEEE80211_MODE_11A] = 3,
1732 [IEEE80211_MODE_11B] = 4,
1733 [IEEE80211_MODE_11G] = 3,
1734 [IEEE80211_MODE_FH] = 4,
1735 [IEEE80211_MODE_TURBO_A] = 3,
1736 [IEEE80211_MODE_TURBO_G] = 3,
1737 [IEEE80211_MODE_STURBO_A] = 3,
1738 [IEEE80211_MODE_HALF] = 3,
1739 [IEEE80211_MODE_QUARTER] = 3,
1740 [IEEE80211_MODE_11NA] = 3,
1741 [IEEE80211_MODE_11NG] = 3,
1742 [IEEE80211_MODE_VHT_2GHZ] = 3,
1743 [IEEE80211_MODE_VHT_5GHZ] = 3,
1744 };
1745 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
1746 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
1747
1748 chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode];
1749 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1750 "update %s (chan+bss) logcwmin %u\n",
1751 ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin);
1752 }
1753
1754 /* schedule the deferred WME update */
1755 ieee80211_runtask(ic, &vap->iv_wme_task);
1756
1757 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
1758 "%s: WME params updated, cap_info 0x%x\n", __func__,
1759 vap->iv_opmode == IEEE80211_M_STA ?
1760 wme->wme_wmeChanParams.cap_info :
1761 wme->wme_bssChanParams.cap_info);
1762 }
1763
1764 void
1765 ieee80211_wme_updateparams(struct ieee80211vap *vap)
1766 {
1767 struct ieee80211com *ic = vap->iv_ic;
1768
1769 if (ic->ic_caps & IEEE80211_C_WME) {
1770 IEEE80211_LOCK(ic);
1771 ieee80211_wme_updateparams_locked(vap);
1772 IEEE80211_UNLOCK(ic);
1773 }
1774 }
1775
1776 /*
1777 * Fetch the WME parameters for the given VAP.
1778 *
1779 * When net80211 grows p2p, etc support, this may return different
1780 * parameters for each VAP.
1781 */
1782 void
1783 ieee80211_wme_vap_getparams(struct ieee80211vap *vap, struct chanAccParams *wp)
1784 {
1785
1786 memcpy(wp, &vap->iv_ic->ic_wme.wme_chanParams, sizeof(*wp));
1787 }
1788
1789 /*
1790 * For NICs which only support one set of WME parameters (ie, softmac NICs)
1791 * there may be different VAP WME parameters but only one is "active".
1792 * This returns the "NIC" WME parameters for the currently active
1793 * context.
1794 */
1795 void
1796 ieee80211_wme_ic_getparams(struct ieee80211com *ic, struct chanAccParams *wp)
1797 {
1798
1799 memcpy(wp, &ic->ic_wme.wme_chanParams, sizeof(*wp));
1800 }
1801
1802 /*
1803 * Return whether to use QoS on a given WME queue.
1804 *
1805 * This is intended to be called from the transmit path of softmac drivers
1806 * which are setting NoAck bits in transmit descriptors.
1807 *
1808 * Ideally this would be set in some transmit field before the packet is
1809 * queued to the driver but net80211 isn't quite there yet.
1810 */
1811 int
1812 ieee80211_wme_vap_ac_is_noack(struct ieee80211vap *vap, int ac)
1813 {
1814 /* Bounds/sanity check */
1815 if (ac < 0 || ac >= WME_NUM_AC)
1816 return (0);
1817
1818 /* Again, there's only one global context for now */
1819 return (!! vap->iv_ic->ic_wme.wme_chanParams.cap_wmeParams[ac].wmep_noackPolicy);
1820 }
1821
1822 static void
1823 parent_updown(void *arg, int npending)
1824 {
1825 struct ieee80211com *ic = arg;
1826
1827 ic->ic_parent(ic);
1828 }
1829
1830 static void
1831 update_mcast(void *arg, int npending)
1832 {
1833 struct ieee80211com *ic = arg;
1834
1835 ic->ic_update_mcast(ic);
1836 }
1837
1838 static void
1839 update_promisc(void *arg, int npending)
1840 {
1841 struct ieee80211com *ic = arg;
1842
1843 ic->ic_update_promisc(ic);
1844 }
1845
1846 static void
1847 update_channel(void *arg, int npending)
1848 {
1849 struct ieee80211com *ic = arg;
1850
1851 ic->ic_set_channel(ic);
1852 ieee80211_radiotap_chan_change(ic);
1853 }
1854
1855 static void
1856 update_chw(void *arg, int npending)
1857 {
1858 struct ieee80211com *ic = arg;
1859
1860 /*
1861 * XXX should we defer the channel width _config_ update until now?
1862 */
1863 ic->ic_update_chw(ic);
1864 }
1865
1866 /*
1867 * Deferred WME parameter and beacon update.
1868 *
1869 * In preparation for per-VAP WME configuration, call the VAP
1870 * method if the VAP requires it. Otherwise, just call the
1871 * older global method. There isn't a per-VAP WME configuration
1872 * just yet so for now just use the global configuration.
1873 */
1874 static void
1875 vap_update_wme(void *arg, int npending)
1876 {
1877 struct ieee80211vap *vap = arg;
1878 struct ieee80211com *ic = vap->iv_ic;
1879 struct ieee80211_wme_state *wme = &ic->ic_wme;
1880
1881 /* Driver update */
1882 if (vap->iv_wme_update != NULL)
1883 vap->iv_wme_update(vap,
1884 ic->ic_wme.wme_chanParams.cap_wmeParams);
1885 else
1886 ic->ic_wme.wme_update(ic);
1887
1888 IEEE80211_LOCK(ic);
1889 /*
1890 * Arrange for the beacon update.
1891 *
1892 * XXX what about MBSS, WDS?
1893 */
1894 if (vap->iv_opmode == IEEE80211_M_HOSTAP
1895 || vap->iv_opmode == IEEE80211_M_IBSS) {
1896 /*
1897 * Arrange for a beacon update and bump the parameter
1898 * set number so associated stations load the new values.
1899 */
1900 wme->wme_bssChanParams.cap_info =
1901 (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
1902 ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME);
1903 }
1904 IEEE80211_UNLOCK(ic);
1905 }
1906
1907 static void
1908 restart_vaps(void *arg, int npending)
1909 {
1910 struct ieee80211com *ic = arg;
1911
1912 ieee80211_suspend_all(ic);
1913 ieee80211_resume_all(ic);
1914 }
1915
1916 /*
1917 * Block until the parent is in a known state. This is
1918 * used after any operations that dispatch a task (e.g.
1919 * to auto-configure the parent device up/down).
1920 */
1921 void
1922 ieee80211_waitfor_parent(struct ieee80211com *ic)
1923 {
1924 taskqueue_block(ic->ic_tq);
1925 ieee80211_draintask(ic, &ic->ic_parent_task);
1926 ieee80211_draintask(ic, &ic->ic_mcast_task);
1927 ieee80211_draintask(ic, &ic->ic_promisc_task);
1928 ieee80211_draintask(ic, &ic->ic_chan_task);
1929 ieee80211_draintask(ic, &ic->ic_bmiss_task);
1930 ieee80211_draintask(ic, &ic->ic_chw_task);
1931 taskqueue_unblock(ic->ic_tq);
1932 }
1933
1934 /*
1935 * Check to see whether the current channel needs reset.
1936 *
1937 * Some devices don't handle being given an invalid channel
1938 * in their operating mode very well (eg wpi(4) will throw a
1939 * firmware exception.)
1940 *
1941 * Return 0 if we're ok, 1 if the channel needs to be reset.
1942 *
1943 * See PR kern/202502.
1944 */
1945 static int
1946 ieee80211_start_check_reset_chan(struct ieee80211vap *vap)
1947 {
1948 struct ieee80211com *ic = vap->iv_ic;
1949
1950 if ((vap->iv_opmode == IEEE80211_M_IBSS &&
1951 IEEE80211_IS_CHAN_NOADHOC(ic->ic_curchan)) ||
1952 (vap->iv_opmode == IEEE80211_M_HOSTAP &&
1953 IEEE80211_IS_CHAN_NOHOSTAP(ic->ic_curchan)))
1954 return (1);
1955 return (0);
1956 }
1957
1958 /*
1959 * Reset the curchan to a known good state.
1960 */
1961 static void
1962 ieee80211_start_reset_chan(struct ieee80211vap *vap)
1963 {
1964 struct ieee80211com *ic = vap->iv_ic;
1965
1966 ic->ic_curchan = &ic->ic_channels[0];
1967 }
1968
1969 /*
1970 * Start a vap running. If this is the first vap to be
1971 * set running on the underlying device then we
1972 * automatically bring the device up.
1973 */
1974 void
1975 ieee80211_start_locked(struct ieee80211vap *vap)
1976 {
1977 struct ifnet *ifp = vap->iv_ifp;
1978 struct ieee80211com *ic = vap->iv_ic;
1979
1980 IEEE80211_LOCK_ASSERT(ic);
1981
1982 IEEE80211_DPRINTF(vap,
1983 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
1984 "start running, %d vaps running\n", ic->ic_nrunning);
1985
1986 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1987 /*
1988 * Mark us running. Note that it's ok to do this first;
1989 * if we need to bring the parent device up we defer that
1990 * to avoid dropping the com lock. We expect the device
1991 * to respond to being marked up by calling back into us
1992 * through ieee80211_start_all at which point we'll come
1993 * back in here and complete the work.
1994 */
1995 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1996 ieee80211_notify_ifnet_change(vap, IFF_DRV_RUNNING);
1997
1998 /*
1999 * We are not running; if this we are the first vap
2000 * to be brought up auto-up the parent if necessary.
2001 */
2002 if (ic->ic_nrunning++ == 0) {
2003 /* reset the channel to a known good channel */
2004 if (ieee80211_start_check_reset_chan(vap))
2005 ieee80211_start_reset_chan(vap);
2006
2007 IEEE80211_DPRINTF(vap,
2008 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
2009 "%s: up parent %s\n", __func__, ic->ic_name);
2010 ieee80211_runtask(ic, &ic->ic_parent_task);
2011 return;
2012 }
2013 }
2014 /*
2015 * If the parent is up and running, then kick the
2016 * 802.11 state machine as appropriate.
2017 */
2018 if (vap->iv_roaming != IEEE80211_ROAMING_MANUAL) {
2019 if (vap->iv_opmode == IEEE80211_M_STA) {
2020 #if 0
2021 /* XXX bypasses scan too easily; disable for now */
2022 /*
2023 * Try to be intelligent about clocking the state
2024 * machine. If we're currently in RUN state then
2025 * we should be able to apply any new state/parameters
2026 * simply by re-associating. Otherwise we need to
2027 * re-scan to select an appropriate ap.
2028 */
2029 if (vap->iv_state >= IEEE80211_S_RUN)
2030 ieee80211_new_state_locked(vap,
2031 IEEE80211_S_ASSOC, 1);
2032 else
2033 #endif
2034 ieee80211_new_state_locked(vap,
2035 IEEE80211_S_SCAN, 0);
2036 } else {
2037 /*
2038 * For monitor+wds mode there's nothing to do but
2039 * start running. Otherwise if this is the first
2040 * vap to be brought up, start a scan which may be
2041 * preempted if the station is locked to a particular
2042 * channel.
2043 */
2044 vap->iv_flags_ext |= IEEE80211_FEXT_REINIT;
2045 if (vap->iv_opmode == IEEE80211_M_MONITOR ||
2046 vap->iv_opmode == IEEE80211_M_WDS)
2047 ieee80211_new_state_locked(vap,
2048 IEEE80211_S_RUN, -1);
2049 else
2050 ieee80211_new_state_locked(vap,
2051 IEEE80211_S_SCAN, 0);
2052 }
2053 }
2054 }
2055
2056 /*
2057 * Start a single vap.
2058 */
2059 void
2060 ieee80211_init(void *arg)
2061 {
2062 struct ieee80211vap *vap = arg;
2063
2064 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
2065 "%s\n", __func__);
2066
2067 IEEE80211_LOCK(vap->iv_ic);
2068 ieee80211_start_locked(vap);
2069 IEEE80211_UNLOCK(vap->iv_ic);
2070 }
2071
2072 /*
2073 * Start all runnable vap's on a device.
2074 */
2075 void
2076 ieee80211_start_all(struct ieee80211com *ic)
2077 {
2078 struct ieee80211vap *vap;
2079
2080 IEEE80211_LOCK(ic);
2081 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2082 struct ifnet *ifp = vap->iv_ifp;
2083 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
2084 ieee80211_start_locked(vap);
2085 }
2086 IEEE80211_UNLOCK(ic);
2087 }
2088
2089 /*
2090 * Stop a vap. We force it down using the state machine
2091 * then mark it's ifnet not running. If this is the last
2092 * vap running on the underlying device then we close it
2093 * too to insure it will be properly initialized when the
2094 * next vap is brought up.
2095 */
2096 void
2097 ieee80211_stop_locked(struct ieee80211vap *vap)
2098 {
2099 struct ieee80211com *ic = vap->iv_ic;
2100 struct ifnet *ifp = vap->iv_ifp;
2101
2102 IEEE80211_LOCK_ASSERT(ic);
2103
2104 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
2105 "stop running, %d vaps running\n", ic->ic_nrunning);
2106
2107 ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1);
2108 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2109 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */
2110 ieee80211_notify_ifnet_change(vap, IFF_DRV_RUNNING);
2111 if (--ic->ic_nrunning == 0) {
2112 IEEE80211_DPRINTF(vap,
2113 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
2114 "down parent %s\n", ic->ic_name);
2115 ieee80211_runtask(ic, &ic->ic_parent_task);
2116 }
2117 }
2118 }
2119
2120 void
2121 ieee80211_stop(struct ieee80211vap *vap)
2122 {
2123 struct ieee80211com *ic = vap->iv_ic;
2124
2125 IEEE80211_LOCK(ic);
2126 ieee80211_stop_locked(vap);
2127 IEEE80211_UNLOCK(ic);
2128 }
2129
2130 /*
2131 * Stop all vap's running on a device.
2132 */
2133 void
2134 ieee80211_stop_all(struct ieee80211com *ic)
2135 {
2136 struct ieee80211vap *vap;
2137
2138 IEEE80211_LOCK(ic);
2139 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2140 struct ifnet *ifp = vap->iv_ifp;
2141 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
2142 ieee80211_stop_locked(vap);
2143 }
2144 IEEE80211_UNLOCK(ic);
2145
2146 ieee80211_waitfor_parent(ic);
2147 }
2148
2149 /*
2150 * Stop all vap's running on a device and arrange
2151 * for those that were running to be resumed.
2152 */
2153 void
2154 ieee80211_suspend_all(struct ieee80211com *ic)
2155 {
2156 struct ieee80211vap *vap;
2157
2158 IEEE80211_LOCK(ic);
2159 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2160 struct ifnet *ifp = vap->iv_ifp;
2161 if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */
2162 vap->iv_flags_ext |= IEEE80211_FEXT_RESUME;
2163 ieee80211_stop_locked(vap);
2164 }
2165 }
2166 IEEE80211_UNLOCK(ic);
2167
2168 ieee80211_waitfor_parent(ic);
2169 }
2170
2171 /*
2172 * Start all vap's marked for resume.
2173 */
2174 void
2175 ieee80211_resume_all(struct ieee80211com *ic)
2176 {
2177 struct ieee80211vap *vap;
2178
2179 IEEE80211_LOCK(ic);
2180 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2181 struct ifnet *ifp = vap->iv_ifp;
2182 if (!IFNET_IS_UP_RUNNING(ifp) &&
2183 (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) {
2184 vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME;
2185 ieee80211_start_locked(vap);
2186 }
2187 }
2188 IEEE80211_UNLOCK(ic);
2189 }
2190
2191 /*
2192 * Restart all vap's running on a device.
2193 */
2194 void
2195 ieee80211_restart_all(struct ieee80211com *ic)
2196 {
2197 /*
2198 * NB: do not use ieee80211_runtask here, we will
2199 * block & drain net80211 taskqueue.
2200 */
2201 taskqueue_enqueue(taskqueue_thread, &ic->ic_restart_task);
2202 }
2203
2204 void
2205 ieee80211_beacon_miss(struct ieee80211com *ic)
2206 {
2207 IEEE80211_LOCK(ic);
2208 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
2209 /* Process in a taskq, the handler may reenter the driver */
2210 ieee80211_runtask(ic, &ic->ic_bmiss_task);
2211 }
2212 IEEE80211_UNLOCK(ic);
2213 }
2214
2215 static void
2216 beacon_miss(void *arg, int npending)
2217 {
2218 struct ieee80211com *ic = arg;
2219 struct ieee80211vap *vap;
2220
2221 IEEE80211_LOCK(ic);
2222 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2223 /*
2224 * We only pass events through for sta vap's in RUN+ state;
2225 * may be too restrictive but for now this saves all the
2226 * handlers duplicating these checks.
2227 */
2228 if (vap->iv_opmode == IEEE80211_M_STA &&
2229 vap->iv_state >= IEEE80211_S_RUN &&
2230 vap->iv_bmiss != NULL)
2231 vap->iv_bmiss(vap);
2232 }
2233 IEEE80211_UNLOCK(ic);
2234 }
2235
2236 static void
2237 beacon_swmiss(void *arg, int npending)
2238 {
2239 struct ieee80211vap *vap = arg;
2240 struct ieee80211com *ic = vap->iv_ic;
2241
2242 IEEE80211_LOCK(ic);
2243 if (vap->iv_state >= IEEE80211_S_RUN) {
2244 /* XXX Call multiple times if npending > zero? */
2245 vap->iv_bmiss(vap);
2246 }
2247 IEEE80211_UNLOCK(ic);
2248 }
2249
2250 /*
2251 * Software beacon miss handling. Check if any beacons
2252 * were received in the last period. If not post a
2253 * beacon miss; otherwise reset the counter.
2254 */
2255 void
2256 ieee80211_swbmiss(void *arg)
2257 {
2258 struct ieee80211vap *vap = arg;
2259 struct ieee80211com *ic = vap->iv_ic;
2260
2261 IEEE80211_LOCK_ASSERT(ic);
2262
2263 KASSERT(vap->iv_state >= IEEE80211_S_RUN,
2264 ("wrong state %d", vap->iv_state));
2265
2266 if (ic->ic_flags & IEEE80211_F_SCAN) {
2267 /*
2268 * If scanning just ignore and reset state. If we get a
2269 * bmiss after coming out of scan because we haven't had
2270 * time to receive a beacon then we should probe the AP
2271 * before posting a real bmiss (unless iv_bmiss_max has
2272 * been artifiically lowered). A cleaner solution might
2273 * be to disable the timer on scan start/end but to handle
2274 * case of multiple sta vap's we'd need to disable the
2275 * timers of all affected vap's.
2276 */
2277 vap->iv_swbmiss_count = 0;
2278 } else if (vap->iv_swbmiss_count == 0) {
2279 if (vap->iv_bmiss != NULL)
2280 ieee80211_runtask(ic, &vap->iv_swbmiss_task);
2281 } else
2282 vap->iv_swbmiss_count = 0;
2283 callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period,
2284 ieee80211_swbmiss, vap);
2285 }
2286
2287 /*
2288 * Start an 802.11h channel switch. We record the parameters,
2289 * mark the operation pending, notify each vap through the
2290 * beacon update mechanism so it can update the beacon frame
2291 * contents, and then switch vap's to CSA state to block outbound
2292 * traffic. Devices that handle CSA directly can use the state
2293 * switch to do the right thing so long as they call
2294 * ieee80211_csa_completeswitch when it's time to complete the
2295 * channel change. Devices that depend on the net80211 layer can
2296 * use ieee80211_beacon_update to handle the countdown and the
2297 * channel switch.
2298 */
2299 void
2300 ieee80211_csa_startswitch(struct ieee80211com *ic,
2301 struct ieee80211_channel *c, int mode, int count)
2302 {
2303 struct ieee80211vap *vap;
2304
2305 IEEE80211_LOCK_ASSERT(ic);
2306
2307 ic->ic_csa_newchan = c;
2308 ic->ic_csa_mode = mode;
2309 ic->ic_csa_count = count;
2310 ic->ic_flags |= IEEE80211_F_CSAPENDING;
2311 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2312 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
2313 vap->iv_opmode == IEEE80211_M_IBSS ||
2314 vap->iv_opmode == IEEE80211_M_MBSS)
2315 ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA);
2316 /* switch to CSA state to block outbound traffic */
2317 if (vap->iv_state == IEEE80211_S_RUN)
2318 ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0);
2319 }
2320 ieee80211_notify_csa(ic, c, mode, count);
2321 }
2322
2323 /*
2324 * Complete the channel switch by transitioning all CSA VAPs to RUN.
2325 * This is called by both the completion and cancellation functions
2326 * so each VAP is placed back in the RUN state and can thus transmit.
2327 */
2328 static void
2329 csa_completeswitch(struct ieee80211com *ic)
2330 {
2331 struct ieee80211vap *vap;
2332
2333 ic->ic_csa_newchan = NULL;
2334 ic->ic_flags &= ~IEEE80211_F_CSAPENDING;
2335
2336 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2337 if (vap->iv_state == IEEE80211_S_CSA)
2338 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
2339 }
2340
2341 /*
2342 * Complete an 802.11h channel switch started by ieee80211_csa_startswitch.
2343 * We clear state and move all vap's in CSA state to RUN state
2344 * so they can again transmit.
2345 *
2346 * Although this may not be completely correct, update the BSS channel
2347 * for each VAP to the newly configured channel. The setcurchan sets
2348 * the current operating channel for the interface (so the radio does
2349 * switch over) but the VAP BSS isn't updated, leading to incorrectly
2350 * reported information via ioctl.
2351 */
2352 void
2353 ieee80211_csa_completeswitch(struct ieee80211com *ic)
2354 {
2355 struct ieee80211vap *vap;
2356
2357 IEEE80211_LOCK_ASSERT(ic);
2358
2359 KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending"));
2360
2361 ieee80211_setcurchan(ic, ic->ic_csa_newchan);
2362 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2363 if (vap->iv_state == IEEE80211_S_CSA)
2364 vap->iv_bss->ni_chan = ic->ic_curchan;
2365
2366 csa_completeswitch(ic);
2367 }
2368
2369 /*
2370 * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch.
2371 * We clear state and move all vap's in CSA state to RUN state
2372 * so they can again transmit.
2373 */
2374 void
2375 ieee80211_csa_cancelswitch(struct ieee80211com *ic)
2376 {
2377 IEEE80211_LOCK_ASSERT(ic);
2378
2379 csa_completeswitch(ic);
2380 }
2381
2382 /*
2383 * Complete a DFS CAC started by ieee80211_dfs_cac_start.
2384 * We clear state and move all vap's in CAC state to RUN state.
2385 */
2386 void
2387 ieee80211_cac_completeswitch(struct ieee80211vap *vap0)
2388 {
2389 struct ieee80211com *ic = vap0->iv_ic;
2390 struct ieee80211vap *vap;
2391
2392 IEEE80211_LOCK(ic);
2393 /*
2394 * Complete CAC state change for lead vap first; then
2395 * clock all the other vap's waiting.
2396 */
2397 KASSERT(vap0->iv_state == IEEE80211_S_CAC,
2398 ("wrong state %d", vap0->iv_state));
2399 ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0);
2400
2401 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2402 if (vap->iv_state == IEEE80211_S_CAC && vap != vap0)
2403 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
2404 IEEE80211_UNLOCK(ic);
2405 }
2406
2407 /*
2408 * Force all vap's other than the specified vap to the INIT state
2409 * and mark them as waiting for a scan to complete. These vaps
2410 * will be brought up when the scan completes and the scanning vap
2411 * reaches RUN state by wakeupwaiting.
2412 */
2413 static void
2414 markwaiting(struct ieee80211vap *vap0)
2415 {
2416 struct ieee80211com *ic = vap0->iv_ic;
2417 struct ieee80211vap *vap;
2418
2419 IEEE80211_LOCK_ASSERT(ic);
2420
2421 /*
2422 * A vap list entry can not disappear since we are running on the
2423 * taskqueue and a vap destroy will queue and drain another state
2424 * change task.
2425 */
2426 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2427 if (vap == vap0)
2428 continue;
2429 if (vap->iv_state != IEEE80211_S_INIT) {
2430 /* NB: iv_newstate may drop the lock */
2431 vap->iv_newstate(vap, IEEE80211_S_INIT, 0);
2432 IEEE80211_LOCK_ASSERT(ic);
2433 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
2434 }
2435 }
2436 }
2437
2438 /*
2439 * Wakeup all vap's waiting for a scan to complete. This is the
2440 * companion to markwaiting (above) and is used to coordinate
2441 * multiple vaps scanning.
2442 * This is called from the state taskqueue.
2443 */
2444 static void
2445 wakeupwaiting(struct ieee80211vap *vap0)
2446 {
2447 struct ieee80211com *ic = vap0->iv_ic;
2448 struct ieee80211vap *vap;
2449
2450 IEEE80211_LOCK_ASSERT(ic);
2451
2452 /*
2453 * A vap list entry can not disappear since we are running on the
2454 * taskqueue and a vap destroy will queue and drain another state
2455 * change task.
2456 */
2457 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2458 if (vap == vap0)
2459 continue;
2460 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) {
2461 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
2462 /* NB: sta's cannot go INIT->RUN */
2463 /* NB: iv_newstate may drop the lock */
2464
2465 /*
2466 * This is problematic if the interface has OACTIVE
2467 * set. Only the deferred ieee80211_newstate_cb()
2468 * will end up actually /clearing/ the OACTIVE
2469 * flag on a state transition to RUN from a non-RUN
2470 * state.
2471 *
2472 * But, we're not actually deferring this callback;
2473 * and when the deferred call occurs it shows up as
2474 * a RUN->RUN transition! So the flag isn't/wasn't
2475 * cleared!
2476 *
2477 * I'm also not sure if it's correct to actually
2478 * do the transitions here fully through the deferred
2479 * paths either as other things can be invoked as
2480 * part of that state machine.
2481 *
2482 * So just keep this in mind when looking at what
2483 * the markwaiting/wakeupwaiting routines are doing
2484 * and how they invoke vap state changes.
2485 */
2486
2487 vap->iv_newstate(vap,
2488 vap->iv_opmode == IEEE80211_M_STA ?
2489 IEEE80211_S_SCAN : IEEE80211_S_RUN, 0);
2490 IEEE80211_LOCK_ASSERT(ic);
2491 }
2492 }
2493 }
2494
2495 /*
2496 * Handle post state change work common to all operating modes.
2497 */
2498 static void
2499 ieee80211_newstate_cb(void *xvap, int npending)
2500 {
2501 struct ieee80211vap *vap = xvap;
2502 struct ieee80211com *ic = vap->iv_ic;
2503 enum ieee80211_state nstate, ostate;
2504 int arg, rc;
2505
2506 IEEE80211_LOCK(ic);
2507 nstate = vap->iv_nstate;
2508 arg = vap->iv_nstate_arg;
2509
2510 if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) {
2511 /*
2512 * We have been requested to drop back to the INIT before
2513 * proceeding to the new state.
2514 */
2515 /* Deny any state changes while we are here. */
2516 vap->iv_nstate = IEEE80211_S_INIT;
2517 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2518 "%s: %s -> %s arg %d\n", __func__,
2519 ieee80211_state_name[vap->iv_state],
2520 ieee80211_state_name[vap->iv_nstate], arg);
2521 vap->iv_newstate(vap, vap->iv_nstate, 0);
2522 IEEE80211_LOCK_ASSERT(ic);
2523 vap->iv_flags_ext &= ~(IEEE80211_FEXT_REINIT |
2524 IEEE80211_FEXT_STATEWAIT);
2525 /* enqueue new state transition after cancel_scan() task */
2526 ieee80211_new_state_locked(vap, nstate, arg);
2527 goto done;
2528 }
2529
2530 ostate = vap->iv_state;
2531 if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) {
2532 /*
2533 * SCAN was forced; e.g. on beacon miss. Force other running
2534 * vap's to INIT state and mark them as waiting for the scan to
2535 * complete. This insures they don't interfere with our
2536 * scanning. Since we are single threaded the vaps can not
2537 * transition again while we are executing.
2538 *
2539 * XXX not always right, assumes ap follows sta
2540 */
2541 markwaiting(vap);
2542 }
2543 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2544 "%s: %s -> %s arg %d\n", __func__,
2545 ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg);
2546
2547 rc = vap->iv_newstate(vap, nstate, arg);
2548 IEEE80211_LOCK_ASSERT(ic);
2549 vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT;
2550 if (rc != 0) {
2551 /* State transition failed */
2552 KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred"));
2553 KASSERT(nstate != IEEE80211_S_INIT,
2554 ("INIT state change failed"));
2555 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2556 "%s: %s returned error %d\n", __func__,
2557 ieee80211_state_name[nstate], rc);
2558 goto done;
2559 }
2560
2561 /*
2562 * Handle the case of a RUN->RUN transition occuring when STA + AP
2563 * VAPs occur on the same radio.
2564 *
2565 * The mark and wakeup waiting routines call iv_newstate() directly,
2566 * but they do not end up deferring state changes here.
2567 * Thus, although the VAP newstate method sees a transition
2568 * of RUN->INIT->RUN, the deferred path here only sees a RUN->RUN
2569 * transition. If OACTIVE is set then it is never cleared.
2570 *
2571 * So, if we're here and the state is RUN, just clear OACTIVE.
2572 * At some point if the markwaiting/wakeupwaiting paths end up
2573 * also invoking the deferred state updates then this will
2574 * be no-op code - and also if OACTIVE is finally retired, it'll
2575 * also be no-op code.
2576 */
2577 if (nstate == IEEE80211_S_RUN) {
2578 /*
2579 * OACTIVE may be set on the vap if the upper layer
2580 * tried to transmit (e.g. IPv6 NDP) before we reach
2581 * RUN state. Clear it and restart xmit.
2582 *
2583 * Note this can also happen as a result of SLEEP->RUN
2584 * (i.e. coming out of power save mode).
2585 *
2586 * Historically this was done only for a state change
2587 * but is needed earlier; see next comment. The 2nd half
2588 * of the work is still only done in case of an actual
2589 * state change below.
2590 */
2591 /*
2592 * Unblock the VAP queue; a RUN->RUN state can happen
2593 * on a STA+AP setup on the AP vap. See wakeupwaiting().
2594 */
2595 vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2596
2597 /*
2598 * XXX TODO Kick-start a VAP queue - this should be a method!
2599 */
2600 }
2601
2602 /* No actual transition, skip post processing */
2603 if (ostate == nstate)
2604 goto done;
2605
2606 if (nstate == IEEE80211_S_RUN) {
2607
2608 /* bring up any vaps waiting on us */
2609 wakeupwaiting(vap);
2610 } else if (nstate == IEEE80211_S_INIT) {
2611 /*
2612 * Flush the scan cache if we did the last scan (XXX?)
2613 * and flush any frames on send queues from this vap.
2614 * Note the mgt q is used only for legacy drivers and
2615 * will go away shortly.
2616 */
2617 ieee80211_scan_flush(vap);
2618
2619 /*
2620 * XXX TODO: ic/vap queue flush
2621 */
2622 }
2623 done:
2624 IEEE80211_UNLOCK(ic);
2625 }
2626
2627 /*
2628 * Public interface for initiating a state machine change.
2629 * This routine single-threads the request and coordinates
2630 * the scheduling of multiple vaps for the purpose of selecting
2631 * an operating channel. Specifically the following scenarios
2632 * are handled:
2633 * o only one vap can be selecting a channel so on transition to
2634 * SCAN state if another vap is already scanning then
2635 * mark the caller for later processing and return without
2636 * doing anything (XXX? expectations by caller of synchronous operation)
2637 * o only one vap can be doing CAC of a channel so on transition to
2638 * CAC state if another vap is already scanning for radar then
2639 * mark the caller for later processing and return without
2640 * doing anything (XXX? expectations by caller of synchronous operation)
2641 * o if another vap is already running when a request is made
2642 * to SCAN then an operating channel has been chosen; bypass
2643 * the scan and just join the channel
2644 *
2645 * Note that the state change call is done through the iv_newstate
2646 * method pointer so any driver routine gets invoked. The driver
2647 * will normally call back into operating mode-specific
2648 * ieee80211_newstate routines (below) unless it needs to completely
2649 * bypass the state machine (e.g. because the firmware has it's
2650 * own idea how things should work). Bypassing the net80211 layer
2651 * is usually a mistake and indicates lack of proper integration
2652 * with the net80211 layer.
2653 */
2654 int
2655 ieee80211_new_state_locked(struct ieee80211vap *vap,
2656 enum ieee80211_state nstate, int arg)
2657 {
2658 struct ieee80211com *ic = vap->iv_ic;
2659 struct ieee80211vap *vp;
2660 enum ieee80211_state ostate;
2661 int nrunning, nscanning;
2662
2663 IEEE80211_LOCK_ASSERT(ic);
2664
2665 if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) {
2666 if (vap->iv_nstate == IEEE80211_S_INIT ||
2667 ((vap->iv_state == IEEE80211_S_INIT ||
2668 (vap->iv_flags_ext & IEEE80211_FEXT_REINIT)) &&
2669 vap->iv_nstate == IEEE80211_S_SCAN &&
2670 nstate > IEEE80211_S_SCAN)) {
2671 /*
2672 * XXX The vap is being stopped/started,
2673 * do not allow any other state changes
2674 * until this is completed.
2675 */
2676 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2677 "%s: %s -> %s (%s) transition discarded\n",
2678 __func__,
2679 ieee80211_state_name[vap->iv_state],
2680 ieee80211_state_name[nstate],
2681 ieee80211_state_name[vap->iv_nstate]);
2682 return -1;
2683 } else if (vap->iv_state != vap->iv_nstate) {
2684 #if 0
2685 /* Warn if the previous state hasn't completed. */
2686 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2687 "%s: pending %s -> %s transition lost\n", __func__,
2688 ieee80211_state_name[vap->iv_state],
2689 ieee80211_state_name[vap->iv_nstate]);
2690 #else
2691 /* XXX temporarily enable to identify issues */
2692 if_printf(vap->iv_ifp,
2693 "%s: pending %s -> %s transition lost\n",
2694 __func__, ieee80211_state_name[vap->iv_state],
2695 ieee80211_state_name[vap->iv_nstate]);
2696 #endif
2697 }
2698 }
2699
2700 nrunning = nscanning = 0;
2701 /* XXX can track this state instead of calculating */
2702 TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) {
2703 if (vp != vap) {
2704 if (vp->iv_state >= IEEE80211_S_RUN)
2705 nrunning++;
2706 /* XXX doesn't handle bg scan */
2707 /* NB: CAC+AUTH+ASSOC treated like SCAN */
2708 else if (vp->iv_state > IEEE80211_S_INIT)
2709 nscanning++;
2710 }
2711 }
2712 ostate = vap->iv_state;
2713 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2714 "%s: %s -> %s (arg %d) (nrunning %d nscanning %d)\n", __func__,
2715 ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg,
2716 nrunning, nscanning);
2717 switch (nstate) {
2718 case IEEE80211_S_SCAN:
2719 if (ostate == IEEE80211_S_INIT) {
2720 /*
2721 * INIT -> SCAN happens on initial bringup.
2722 */
2723 KASSERT(!(nscanning && nrunning),
2724 ("%d scanning and %d running", nscanning, nrunning));
2725 if (nscanning) {
2726 /*
2727 * Someone is scanning, defer our state
2728 * change until the work has completed.
2729 */
2730 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2731 "%s: defer %s -> %s\n",
2732 __func__, ieee80211_state_name[ostate],
2733 ieee80211_state_name[nstate]);
2734 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
2735 return 0;
2736 }
2737 if (nrunning) {
2738 /*
2739 * Someone is operating; just join the channel
2740 * they have chosen.
2741 */
2742 /* XXX kill arg? */
2743 /* XXX check each opmode, adhoc? */
2744 if (vap->iv_opmode == IEEE80211_M_STA)
2745 nstate = IEEE80211_S_SCAN;
2746 else
2747 nstate = IEEE80211_S_RUN;
2748 #ifdef IEEE80211_DEBUG
2749 if (nstate != IEEE80211_S_SCAN) {
2750 IEEE80211_DPRINTF(vap,
2751 IEEE80211_MSG_STATE,
2752 "%s: override, now %s -> %s\n",
2753 __func__,
2754 ieee80211_state_name[ostate],
2755 ieee80211_state_name[nstate]);
2756 }
2757 #endif
2758 }
2759 }
2760 break;
2761 case IEEE80211_S_RUN:
2762 if (vap->iv_opmode == IEEE80211_M_WDS &&
2763 (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) &&
2764 nscanning) {
2765 /*
2766 * Legacy WDS with someone else scanning; don't
2767 * go online until that completes as we should
2768 * follow the other vap to the channel they choose.
2769 */
2770 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2771 "%s: defer %s -> %s (legacy WDS)\n", __func__,
2772 ieee80211_state_name[ostate],
2773 ieee80211_state_name[nstate]);
2774 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
2775 return 0;
2776 }
2777 if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
2778 IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
2779 (vap->iv_flags_ext & IEEE80211_FEXT_DFS) &&
2780 !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) {
2781 /*
2782 * This is a DFS channel, transition to CAC state
2783 * instead of RUN. This allows us to initiate
2784 * Channel Availability Check (CAC) as specified
2785 * by 11h/DFS.
2786 */
2787 nstate = IEEE80211_S_CAC;
2788 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
2789 "%s: override %s -> %s (DFS)\n", __func__,
2790 ieee80211_state_name[ostate],
2791 ieee80211_state_name[nstate]);
2792 }
2793 break;
2794 case IEEE80211_S_INIT:
2795 /* cancel any scan in progress */
2796 ieee80211_cancel_scan(vap);
2797 if (ostate == IEEE80211_S_INIT ) {
2798 /* XXX don't believe this */
2799 /* INIT -> INIT. nothing to do */
2800 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
2801 }
2802 /* fall thru... */
2803 default:
2804 break;
2805 }
2806 /* defer the state change to a thread */
2807 vap->iv_nstate = nstate;
2808 vap->iv_nstate_arg = arg;
2809 vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT;
2810 ieee80211_runtask(ic, &vap->iv_nstate_task);
2811 return EINPROGRESS;
2812 }
2813
2814 int
2815 ieee80211_new_state(struct ieee80211vap *vap,
2816 enum ieee80211_state nstate, int arg)
2817 {
2818 struct ieee80211com *ic = vap->iv_ic;
2819 int rc;
2820
2821 IEEE80211_LOCK(ic);
2822 rc = ieee80211_new_state_locked(vap, nstate, arg);
2823 IEEE80211_UNLOCK(ic);
2824 return rc;
2825 }
Cache object: 1c3d85791c8c28824e5164df1f6dc7ff
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