1 /*- 2 * Copyright (c) 2001 Atsushi Onoe 3 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 4 * Copyright (c) 2012 IEEE 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * IEEE 802.11 protocol support. 33 */ 34 35 #include "opt_inet.h" 36 #include "opt_wlan.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/malloc.h> 42 43 #include <sys/socket.h> 44 #include <sys/sockio.h> 45 46 #include <net/if.h> 47 #include <net/if_var.h> 48 #include <net/if_media.h> 49 #include <net/ethernet.h> /* XXX for ether_sprintf */ 50 51 #if defined(__DragonFly__) 52 #include <net/ifq_var.h> 53 #endif 54 55 #include <netproto/802_11/ieee80211_var.h> 56 #include <netproto/802_11/ieee80211_adhoc.h> 57 #include <netproto/802_11/ieee80211_sta.h> 58 #include <netproto/802_11/ieee80211_hostap.h> 59 #include <netproto/802_11/ieee80211_wds.h> 60 #ifdef IEEE80211_SUPPORT_MESH 61 #include <netproto/802_11/ieee80211_mesh.h> 62 #endif 63 #include <netproto/802_11/ieee80211_monitor.h> 64 #include <netproto/802_11/ieee80211_input.h> 65 66 /* XXX tunables */ 67 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */ 68 #define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */ 69 70 const char *mgt_subtype_name[] = { 71 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp", 72 "probe_req", "probe_resp", "timing_adv", "reserved#7", 73 "beacon", "atim", "disassoc", "auth", 74 "deauth", "action", "action_noack", "reserved#15" 75 }; 76 const char *ctl_subtype_name[] = { 77 "reserved#0", "reserved#1", "reserved#2", "reserved#3", 78 "reserved#4", "reserved#5", "reserved#6", "control_wrap", 79 "bar", "ba", "ps_poll", "rts", 80 "cts", "ack", "cf_end", "cf_end_ack" 81 }; 82 const char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = { 83 "IBSS", /* IEEE80211_M_IBSS */ 84 "STA", /* IEEE80211_M_STA */ 85 "WDS", /* IEEE80211_M_WDS */ 86 "AHDEMO", /* IEEE80211_M_AHDEMO */ 87 "HOSTAP", /* IEEE80211_M_HOSTAP */ 88 "MONITOR", /* IEEE80211_M_MONITOR */ 89 "MBSS" /* IEEE80211_M_MBSS */ 90 }; 91 const char *ieee80211_state_name[IEEE80211_S_MAX] = { 92 "INIT", /* IEEE80211_S_INIT */ 93 "SCAN", /* IEEE80211_S_SCAN */ 94 "AUTH", /* IEEE80211_S_AUTH */ 95 "ASSOC", /* IEEE80211_S_ASSOC */ 96 "CAC", /* IEEE80211_S_CAC */ 97 "RUN", /* IEEE80211_S_RUN */ 98 "CSA", /* IEEE80211_S_CSA */ 99 "SLEEP", /* IEEE80211_S_SLEEP */ 100 }; 101 const char *ieee80211_wme_acnames[] = { 102 "WME_AC_BE", 103 "WME_AC_BK", 104 "WME_AC_VI", 105 "WME_AC_VO", 106 "WME_UPSD", 107 }; 108 109 110 /* 111 * Reason code descriptions were (mostly) obtained from 112 * IEEE Std 802.11-2012, pp. 442-445 Table 8-36. 113 */ 114 const char * 115 ieee80211_reason_to_string(uint16_t reason) 116 { 117 switch (reason) { 118 case IEEE80211_REASON_UNSPECIFIED: 119 return ("unspecified"); 120 case IEEE80211_REASON_AUTH_EXPIRE: 121 return ("previous authentication is expired"); 122 case IEEE80211_REASON_AUTH_LEAVE: 123 return ("sending STA is leaving/has left IBSS or ESS"); 124 case IEEE80211_REASON_ASSOC_EXPIRE: 125 return ("disassociated due to inactivity"); 126 case IEEE80211_REASON_ASSOC_TOOMANY: 127 return ("too many associated STAs"); 128 case IEEE80211_REASON_NOT_AUTHED: 129 return ("class 2 frame received from nonauthenticated STA"); 130 case IEEE80211_REASON_NOT_ASSOCED: 131 return ("class 3 frame received from nonassociated STA"); 132 case IEEE80211_REASON_ASSOC_LEAVE: 133 return ("sending STA is leaving/has left BSS"); 134 case IEEE80211_REASON_ASSOC_NOT_AUTHED: 135 return ("STA requesting (re)association is not authenticated"); 136 case IEEE80211_REASON_DISASSOC_PWRCAP_BAD: 137 return ("information in the Power Capability element is " 138 "unacceptable"); 139 case IEEE80211_REASON_DISASSOC_SUPCHAN_BAD: 140 return ("information in the Supported Channels element is " 141 "unacceptable"); 142 case IEEE80211_REASON_IE_INVALID: 143 return ("invalid element"); 144 case IEEE80211_REASON_MIC_FAILURE: 145 return ("MIC failure"); 146 case IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT: 147 return ("4-Way handshake timeout"); 148 case IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT: 149 return ("group key update timeout"); 150 case IEEE80211_REASON_IE_IN_4WAY_DIFFERS: 151 return ("element in 4-Way handshake different from " 152 "(re)association request/probe response/beacon frame"); 153 case IEEE80211_REASON_GROUP_CIPHER_INVALID: 154 return ("invalid group cipher"); 155 case IEEE80211_REASON_PAIRWISE_CIPHER_INVALID: 156 return ("invalid pairwise cipher"); 157 case IEEE80211_REASON_AKMP_INVALID: 158 return ("invalid AKMP"); 159 case IEEE80211_REASON_UNSUPP_RSN_IE_VERSION: 160 return ("unsupported version in RSN IE"); 161 case IEEE80211_REASON_INVALID_RSN_IE_CAP: 162 return ("invalid capabilities in RSN IE"); 163 case IEEE80211_REASON_802_1X_AUTH_FAILED: 164 return ("IEEE 802.1X authentication failed"); 165 case IEEE80211_REASON_CIPHER_SUITE_REJECTED: 166 return ("cipher suite rejected because of the security " 167 "policy"); 168 case IEEE80211_REASON_UNSPECIFIED_QOS: 169 return ("unspecified (QoS-related)"); 170 case IEEE80211_REASON_INSUFFICIENT_BW: 171 return ("QoS AP lacks sufficient bandwidth for this QoS STA"); 172 case IEEE80211_REASON_TOOMANY_FRAMES: 173 return ("too many frames need to be acknowledged"); 174 case IEEE80211_REASON_OUTSIDE_TXOP: 175 return ("STA is transmitting outside the limits of its TXOPs"); 176 case IEEE80211_REASON_LEAVING_QBSS: 177 return ("requested from peer STA (the STA is " 178 "resetting/leaving the BSS)"); 179 case IEEE80211_REASON_BAD_MECHANISM: 180 return ("requested from peer STA (it does not want to use " 181 "the mechanism)"); 182 case IEEE80211_REASON_SETUP_NEEDED: 183 return ("requested from peer STA (setup is required for the " 184 "used mechanism)"); 185 case IEEE80211_REASON_TIMEOUT: 186 return ("requested from peer STA (timeout)"); 187 case IEEE80211_REASON_PEER_LINK_CANCELED: 188 return ("SME cancels the mesh peering instance (not related " 189 "to the maximum number of peer mesh STAs)"); 190 case IEEE80211_REASON_MESH_MAX_PEERS: 191 return ("maximum number of peer mesh STAs was reached"); 192 case IEEE80211_REASON_MESH_CPVIOLATION: 193 return ("the received information violates the Mesh " 194 "Configuration policy configured in the mesh STA " 195 "profile"); 196 case IEEE80211_REASON_MESH_CLOSE_RCVD: 197 return ("the mesh STA has received a Mesh Peering Close " 198 "message requesting to close the mesh peering"); 199 case IEEE80211_REASON_MESH_MAX_RETRIES: 200 return ("the mesh STA has resent dot11MeshMaxRetries Mesh " 201 "Peering Open messages, without receiving a Mesh " 202 "Peering Confirm message"); 203 case IEEE80211_REASON_MESH_CONFIRM_TIMEOUT: 204 return ("the confirmTimer for the mesh peering instance times " 205 "out"); 206 case IEEE80211_REASON_MESH_INVALID_GTK: 207 return ("the mesh STA fails to unwrap the GTK or the values " 208 "in the wrapped contents do not match"); 209 case IEEE80211_REASON_MESH_INCONS_PARAMS: 210 return ("the mesh STA receives inconsistent information about " 211 "the mesh parameters between Mesh Peering Management " 212 "frames"); 213 case IEEE80211_REASON_MESH_INVALID_SECURITY: 214 return ("the mesh STA fails the authenticated mesh peering " 215 "exchange because due to failure in selecting " 216 "pairwise/group ciphersuite"); 217 case IEEE80211_REASON_MESH_PERR_NO_PROXY: 218 return ("the mesh STA does not have proxy information for " 219 "this external destination"); 220 case IEEE80211_REASON_MESH_PERR_NO_FI: 221 return ("the mesh STA does not have forwarding information " 222 "for this destination"); 223 case IEEE80211_REASON_MESH_PERR_DEST_UNREACH: 224 return ("the mesh STA determines that the link to the next " 225 "hop of an active path in its forwarding information " 226 "is no longer usable"); 227 case IEEE80211_REASON_MESH_MAC_ALRDY_EXISTS_MBSS: 228 return ("the MAC address of the STA already exists in the " 229 "mesh BSS"); 230 case IEEE80211_REASON_MESH_CHAN_SWITCH_REG: 231 return ("the mesh STA performs channel switch to meet " 232 "regulatory requirements"); 233 case IEEE80211_REASON_MESH_CHAN_SWITCH_UNSPEC: 234 return ("the mesh STA performs channel switch with " 235 "unspecified reason"); 236 default: 237 return ("reserved/unknown"); 238 } 239 } 240 241 static void beacon_miss(void *, int); 242 static void beacon_swmiss(void *, int); 243 static void parent_updown(void *, int); 244 static void update_mcast(void *, int); 245 static void update_promisc(void *, int); 246 static void update_channel(void *, int); 247 static void update_chw(void *, int); 248 static void update_wme(void *, int); 249 static void restart_vaps(void *, int); 250 static void ieee80211_newstate_cb(void *, int); 251 252 static int 253 null_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 254 const struct ieee80211_bpf_params *params) 255 { 256 257 ic_printf(ni->ni_ic, "missing ic_raw_xmit callback, drop frame\n"); 258 m_freem(m); 259 return ENETDOWN; 260 } 261 262 void 263 ieee80211_proto_attach(struct ieee80211com *ic) 264 { 265 uint8_t hdrlen; 266 267 /* override the 802.3 setting */ 268 hdrlen = ic->ic_headroom 269 + sizeof(struct ieee80211_qosframe_addr4) 270 + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN 271 + IEEE80211_WEP_EXTIVLEN; 272 /* XXX no way to recalculate on ifdetach */ 273 if (ALIGN(hdrlen) > max_linkhdr) { 274 /* XXX sanity check... */ 275 max_linkhdr = ALIGN(hdrlen); 276 max_hdr = max_linkhdr + max_protohdr; 277 max_datalen = MHLEN - max_hdr; 278 } 279 ic->ic_protmode = IEEE80211_PROT_CTSONLY; 280 281 TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ic); 282 TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic); 283 TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic); 284 TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic); 285 TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, ic); 286 TASK_INIT(&ic->ic_chw_task, 0, update_chw, ic); 287 TASK_INIT(&ic->ic_wme_task, 0, update_wme, ic); 288 TASK_INIT(&ic->ic_restart_task, 0, restart_vaps, ic); 289 290 ic->ic_wme.wme_hipri_switch_hysteresis = 291 AGGRESSIVE_MODE_SWITCH_HYSTERESIS; 292 293 /* initialize management frame handlers */ 294 ic->ic_send_mgmt = ieee80211_send_mgmt; 295 ic->ic_raw_xmit = null_raw_xmit; 296 297 ieee80211_adhoc_attach(ic); 298 ieee80211_sta_attach(ic); 299 ieee80211_wds_attach(ic); 300 ieee80211_hostap_attach(ic); 301 #ifdef IEEE80211_SUPPORT_MESH 302 ieee80211_mesh_attach(ic); 303 #endif 304 ieee80211_monitor_attach(ic); 305 } 306 307 void 308 ieee80211_proto_detach(struct ieee80211com *ic) 309 { 310 ieee80211_monitor_detach(ic); 311 #ifdef IEEE80211_SUPPORT_MESH 312 ieee80211_mesh_detach(ic); 313 #endif 314 ieee80211_hostap_detach(ic); 315 ieee80211_wds_detach(ic); 316 ieee80211_adhoc_detach(ic); 317 ieee80211_sta_detach(ic); 318 } 319 320 static void 321 null_update_beacon(struct ieee80211vap *vap, int item) 322 { 323 } 324 325 void 326 ieee80211_proto_vattach(struct ieee80211vap *vap) 327 { 328 struct ieee80211com *ic = vap->iv_ic; 329 struct ifnet *ifp = vap->iv_ifp; 330 int i; 331 332 /* override the 802.3 setting */ 333 ifp->if_hdrlen = ic->ic_headroom 334 + sizeof(struct ieee80211_qosframe_addr4) 335 + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN 336 + IEEE80211_WEP_EXTIVLEN; 337 338 vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT; 339 vap->iv_fragthreshold = IEEE80211_FRAG_DEFAULT; 340 vap->iv_bmiss_max = IEEE80211_BMISS_MAX; 341 callout_init_mtx(&vap->iv_swbmiss, IEEE80211_LOCK_OBJ(ic), 0); 342 #if defined(__DragonFly__) 343 callout_init_mp(&vap->iv_mgtsend); 344 #else 345 callout_init(&vap->iv_mgtsend, 1); 346 #endif 347 TASK_INIT(&vap->iv_nstate_task, 0, ieee80211_newstate_cb, vap); 348 TASK_INIT(&vap->iv_swbmiss_task, 0, beacon_swmiss, vap); 349 /* 350 * Install default tx rate handling: no fixed rate, lowest 351 * supported rate for mgmt and multicast frames. Default 352 * max retry count. These settings can be changed by the 353 * driver and/or user applications. 354 */ 355 for (i = IEEE80211_MODE_11A; i < IEEE80211_MODE_MAX; i++) { 356 const struct ieee80211_rateset *rs = &ic->ic_sup_rates[i]; 357 358 vap->iv_txparms[i].ucastrate = IEEE80211_FIXED_RATE_NONE; 359 360 /* 361 * Setting the management rate to MCS 0 assumes that the 362 * BSS Basic rate set is empty and the BSS Basic MCS set 363 * is not. 364 * 365 * Since we're not checking this, default to the lowest 366 * defined rate for this mode. 367 * 368 * At least one 11n AP (DLINK DIR-825) is reported to drop 369 * some MCS management traffic (eg BA response frames.) 370 * 371 * See also: 9.6.0 of the 802.11n-2009 specification. 372 */ 373 #ifdef NOTYET 374 if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) { 375 vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS; 376 vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS; 377 } else { 378 vap->iv_txparms[i].mgmtrate = 379 rs->rs_rates[0] & IEEE80211_RATE_VAL; 380 vap->iv_txparms[i].mcastrate = 381 rs->rs_rates[0] & IEEE80211_RATE_VAL; 382 } 383 #endif 384 vap->iv_txparms[i].mgmtrate = rs->rs_rates[0] & IEEE80211_RATE_VAL; 385 vap->iv_txparms[i].mcastrate = rs->rs_rates[0] & IEEE80211_RATE_VAL; 386 vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT; 387 } 388 vap->iv_roaming = IEEE80211_ROAMING_AUTO; 389 390 vap->iv_update_beacon = null_update_beacon; 391 vap->iv_deliver_data = ieee80211_deliver_data; 392 393 /* attach support for operating mode */ 394 ic->ic_vattach[vap->iv_opmode](vap); 395 } 396 397 void 398 ieee80211_proto_vdetach(struct ieee80211vap *vap) 399 { 400 #define FREEAPPIE(ie) do { \ 401 if (ie != NULL) \ 402 IEEE80211_FREE(ie, M_80211_NODE_IE); \ 403 } while (0) 404 /* 405 * Detach operating mode module. 406 */ 407 if (vap->iv_opdetach != NULL) 408 vap->iv_opdetach(vap); 409 /* 410 * This should not be needed as we detach when reseting 411 * the state but be conservative here since the 412 * authenticator may do things like spawn kernel threads. 413 */ 414 if (vap->iv_auth->ia_detach != NULL) 415 vap->iv_auth->ia_detach(vap); 416 /* 417 * Detach any ACL'ator. 418 */ 419 if (vap->iv_acl != NULL) 420 vap->iv_acl->iac_detach(vap); 421 422 FREEAPPIE(vap->iv_appie_beacon); 423 FREEAPPIE(vap->iv_appie_probereq); 424 FREEAPPIE(vap->iv_appie_proberesp); 425 FREEAPPIE(vap->iv_appie_assocreq); 426 FREEAPPIE(vap->iv_appie_assocresp); 427 FREEAPPIE(vap->iv_appie_wpa); 428 #undef FREEAPPIE 429 } 430 431 /* 432 * Simple-minded authenticator module support. 433 */ 434 435 #define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1) 436 /* XXX well-known names */ 437 static const char *auth_modnames[IEEE80211_AUTH_MAX] = { 438 "wlan_internal", /* IEEE80211_AUTH_NONE */ 439 "wlan_internal", /* IEEE80211_AUTH_OPEN */ 440 "wlan_internal", /* IEEE80211_AUTH_SHARED */ 441 "wlan_xauth", /* IEEE80211_AUTH_8021X */ 442 "wlan_internal", /* IEEE80211_AUTH_AUTO */ 443 "wlan_xauth", /* IEEE80211_AUTH_WPA */ 444 }; 445 static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX]; 446 447 static const struct ieee80211_authenticator auth_internal = { 448 .ia_name = "wlan_internal", 449 .ia_attach = NULL, 450 .ia_detach = NULL, 451 .ia_node_join = NULL, 452 .ia_node_leave = NULL, 453 }; 454 455 /* 456 * Setup internal authenticators once; they are never unregistered. 457 */ 458 static void 459 ieee80211_auth_setup(void) 460 { 461 ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal); 462 ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal); 463 ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal); 464 } 465 SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL); 466 467 const struct ieee80211_authenticator * 468 ieee80211_authenticator_get(int auth) 469 { 470 if (auth >= IEEE80211_AUTH_MAX) 471 return NULL; 472 if (authenticators[auth] == NULL) 473 ieee80211_load_module(auth_modnames[auth]); 474 return authenticators[auth]; 475 } 476 477 void 478 ieee80211_authenticator_register(int type, 479 const struct ieee80211_authenticator *auth) 480 { 481 if (type >= IEEE80211_AUTH_MAX) 482 return; 483 authenticators[type] = auth; 484 } 485 486 void 487 ieee80211_authenticator_unregister(int type) 488 { 489 490 if (type >= IEEE80211_AUTH_MAX) 491 return; 492 authenticators[type] = NULL; 493 } 494 495 /* 496 * Very simple-minded ACL module support. 497 */ 498 /* XXX just one for now */ 499 static const struct ieee80211_aclator *acl = NULL; 500 501 void 502 ieee80211_aclator_register(const struct ieee80211_aclator *iac) 503 { 504 kprintf("wlan: %s acl policy registered\n", iac->iac_name); 505 acl = iac; 506 } 507 508 void 509 ieee80211_aclator_unregister(const struct ieee80211_aclator *iac) 510 { 511 if (acl == iac) 512 acl = NULL; 513 kprintf("wlan: %s acl policy unregistered\n", iac->iac_name); 514 } 515 516 const struct ieee80211_aclator * 517 ieee80211_aclator_get(const char *name) 518 { 519 if (acl == NULL) 520 ieee80211_load_module("wlan_acl"); 521 return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL; 522 } 523 524 void 525 ieee80211_print_essid(const uint8_t *essid, int len) 526 { 527 const uint8_t *p; 528 int i; 529 530 if (len > IEEE80211_NWID_LEN) 531 len = IEEE80211_NWID_LEN; 532 /* determine printable or not */ 533 for (i = 0, p = essid; i < len; i++, p++) { 534 if (*p < ' ' || *p > 0x7e) 535 break; 536 } 537 if (i == len) { 538 kprintf("\""); 539 for (i = 0, p = essid; i < len; i++, p++) 540 kprintf("%c", *p); 541 kprintf("\""); 542 } else { 543 kprintf("0x"); 544 for (i = 0, p = essid; i < len; i++, p++) 545 kprintf("%02x", *p); 546 } 547 } 548 549 void 550 ieee80211_dump_pkt(struct ieee80211com *ic, 551 const uint8_t *buf, int len, int rate, int rssi) 552 { 553 const struct ieee80211_frame *wh; 554 int i; 555 556 wh = (const struct ieee80211_frame *)buf; 557 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) { 558 case IEEE80211_FC1_DIR_NODS: 559 kprintf("NODS %s", ether_sprintf(wh->i_addr2)); 560 kprintf("->%s", ether_sprintf(wh->i_addr1)); 561 kprintf("(%s)", ether_sprintf(wh->i_addr3)); 562 break; 563 case IEEE80211_FC1_DIR_TODS: 564 kprintf("TODS %s", ether_sprintf(wh->i_addr2)); 565 kprintf("->%s", ether_sprintf(wh->i_addr3)); 566 kprintf("(%s)", ether_sprintf(wh->i_addr1)); 567 break; 568 case IEEE80211_FC1_DIR_FROMDS: 569 kprintf("FRDS %s", ether_sprintf(wh->i_addr3)); 570 kprintf("->%s", ether_sprintf(wh->i_addr1)); 571 kprintf("(%s)", ether_sprintf(wh->i_addr2)); 572 break; 573 case IEEE80211_FC1_DIR_DSTODS: 574 kprintf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1])); 575 kprintf("->%s", ether_sprintf(wh->i_addr3)); 576 kprintf("(%s", ether_sprintf(wh->i_addr2)); 577 kprintf("->%s)", ether_sprintf(wh->i_addr1)); 578 break; 579 } 580 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 581 case IEEE80211_FC0_TYPE_DATA: 582 kprintf(" data"); 583 break; 584 case IEEE80211_FC0_TYPE_MGT: 585 kprintf(" %s", ieee80211_mgt_subtype_name(wh->i_fc[0])); 586 break; 587 default: 588 kprintf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK); 589 break; 590 } 591 if (IEEE80211_QOS_HAS_SEQ(wh)) { 592 const struct ieee80211_qosframe *qwh = 593 (const struct ieee80211_qosframe *)buf; 594 kprintf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID, 595 qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : ""); 596 } 597 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 598 int off; 599 600 off = ieee80211_anyhdrspace(ic, wh); 601 kprintf(" WEP [IV %.02x %.02x %.02x", 602 buf[off+0], buf[off+1], buf[off+2]); 603 if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV) 604 kprintf(" %.02x %.02x %.02x", 605 buf[off+4], buf[off+5], buf[off+6]); 606 kprintf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6); 607 } 608 if (rate >= 0) 609 kprintf(" %dM", rate / 2); 610 if (rssi >= 0) 611 kprintf(" +%d", rssi); 612 kprintf("\n"); 613 if (len > 0) { 614 for (i = 0; i < len; i++) { 615 if ((i & 1) == 0) 616 kprintf(" "); 617 kprintf("%02x", buf[i]); 618 } 619 kprintf("\n"); 620 } 621 } 622 623 static __inline int 624 findrix(const struct ieee80211_rateset *rs, int r) 625 { 626 int i; 627 628 for (i = 0; i < rs->rs_nrates; i++) 629 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r) 630 return i; 631 return -1; 632 } 633 634 int 635 ieee80211_fix_rate(struct ieee80211_node *ni, 636 struct ieee80211_rateset *nrs, int flags) 637 { 638 struct ieee80211vap *vap = ni->ni_vap; 639 struct ieee80211com *ic = ni->ni_ic; 640 int i, j, rix, error; 641 int okrate, badrate, fixedrate, ucastrate; 642 const struct ieee80211_rateset *srs; 643 uint8_t r; 644 645 error = 0; 646 okrate = badrate = 0; 647 ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate; 648 if (ucastrate != IEEE80211_FIXED_RATE_NONE) { 649 /* 650 * Workaround awkwardness with fixed rate. We are called 651 * to check both the legacy rate set and the HT rate set 652 * but we must apply any legacy fixed rate check only to the 653 * legacy rate set and vice versa. We cannot tell what type 654 * of rate set we've been given (legacy or HT) but we can 655 * distinguish the fixed rate type (MCS have 0x80 set). 656 * So to deal with this the caller communicates whether to 657 * check MCS or legacy rate using the flags and we use the 658 * type of any fixed rate to avoid applying an MCS to a 659 * legacy rate and vice versa. 660 */ 661 if (ucastrate & 0x80) { 662 if (flags & IEEE80211_F_DOFRATE) 663 flags &= ~IEEE80211_F_DOFRATE; 664 } else if ((ucastrate & 0x80) == 0) { 665 if (flags & IEEE80211_F_DOFMCS) 666 flags &= ~IEEE80211_F_DOFMCS; 667 } 668 /* NB: required to make MCS match below work */ 669 ucastrate &= IEEE80211_RATE_VAL; 670 } 671 fixedrate = IEEE80211_FIXED_RATE_NONE; 672 /* 673 * XXX we are called to process both MCS and legacy rates; 674 * we must use the appropriate basic rate set or chaos will 675 * ensue; for now callers that want MCS must supply 676 * IEEE80211_F_DOBRS; at some point we'll need to split this 677 * function so there are two variants, one for MCS and one 678 * for legacy rates. 679 */ 680 if (flags & IEEE80211_F_DOBRS) 681 srs = (const struct ieee80211_rateset *) 682 ieee80211_get_suphtrates(ic, ni->ni_chan); 683 else 684 srs = ieee80211_get_suprates(ic, ni->ni_chan); 685 for (i = 0; i < nrs->rs_nrates; ) { 686 if (flags & IEEE80211_F_DOSORT) { 687 /* 688 * Sort rates. 689 */ 690 for (j = i + 1; j < nrs->rs_nrates; j++) { 691 if (IEEE80211_RV(nrs->rs_rates[i]) > 692 IEEE80211_RV(nrs->rs_rates[j])) { 693 r = nrs->rs_rates[i]; 694 nrs->rs_rates[i] = nrs->rs_rates[j]; 695 nrs->rs_rates[j] = r; 696 } 697 } 698 } 699 r = nrs->rs_rates[i] & IEEE80211_RATE_VAL; 700 badrate = r; 701 /* 702 * Check for fixed rate. 703 */ 704 if (r == ucastrate) 705 fixedrate = r; 706 /* 707 * Check against supported rates. 708 */ 709 rix = findrix(srs, r); 710 if (flags & IEEE80211_F_DONEGO) { 711 if (rix < 0) { 712 /* 713 * A rate in the node's rate set is not 714 * supported. If this is a basic rate and we 715 * are operating as a STA then this is an error. 716 * Otherwise we just discard/ignore the rate. 717 */ 718 if ((flags & IEEE80211_F_JOIN) && 719 (nrs->rs_rates[i] & IEEE80211_RATE_BASIC)) 720 error++; 721 } else if ((flags & IEEE80211_F_JOIN) == 0) { 722 /* 723 * Overwrite with the supported rate 724 * value so any basic rate bit is set. 725 */ 726 nrs->rs_rates[i] = srs->rs_rates[rix]; 727 } 728 } 729 if ((flags & IEEE80211_F_DODEL) && rix < 0) { 730 /* 731 * Delete unacceptable rates. 732 */ 733 nrs->rs_nrates--; 734 for (j = i; j < nrs->rs_nrates; j++) 735 nrs->rs_rates[j] = nrs->rs_rates[j + 1]; 736 nrs->rs_rates[j] = 0; 737 continue; 738 } 739 if (rix >= 0) 740 okrate = nrs->rs_rates[i]; 741 i++; 742 } 743 if (okrate == 0 || error != 0 || 744 ((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) && 745 fixedrate != ucastrate)) { 746 IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni, 747 "%s: flags 0x%x okrate %d error %d fixedrate 0x%x " 748 "ucastrate %x\n", __func__, flags, okrate, error, 749 fixedrate, ucastrate); 750 return badrate | IEEE80211_RATE_BASIC; 751 } else 752 return IEEE80211_RV(okrate); 753 } 754 755 /* 756 * Reset 11g-related state. 757 */ 758 void 759 ieee80211_reset_erp(struct ieee80211com *ic) 760 { 761 ic->ic_flags &= ~IEEE80211_F_USEPROT; 762 ic->ic_nonerpsta = 0; 763 ic->ic_longslotsta = 0; 764 /* 765 * Short slot time is enabled only when operating in 11g 766 * and not in an IBSS. We must also honor whether or not 767 * the driver is capable of doing it. 768 */ 769 ieee80211_set_shortslottime(ic, 770 IEEE80211_IS_CHAN_A(ic->ic_curchan) || 771 IEEE80211_IS_CHAN_HT(ic->ic_curchan) || 772 (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 773 ic->ic_opmode == IEEE80211_M_HOSTAP && 774 (ic->ic_caps & IEEE80211_C_SHSLOT))); 775 /* 776 * Set short preamble and ERP barker-preamble flags. 777 */ 778 if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 779 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) { 780 ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 781 ic->ic_flags &= ~IEEE80211_F_USEBARKER; 782 } else { 783 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 784 ic->ic_flags |= IEEE80211_F_USEBARKER; 785 } 786 } 787 788 /* 789 * Set the short slot time state and notify the driver. 790 */ 791 void 792 ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff) 793 { 794 if (onoff) 795 ic->ic_flags |= IEEE80211_F_SHSLOT; 796 else 797 ic->ic_flags &= ~IEEE80211_F_SHSLOT; 798 /* notify driver */ 799 if (ic->ic_updateslot != NULL) 800 ic->ic_updateslot(ic); 801 } 802 803 /* 804 * Check if the specified rate set supports ERP. 805 * NB: the rate set is assumed to be sorted. 806 */ 807 int 808 ieee80211_iserp_rateset(const struct ieee80211_rateset *rs) 809 { 810 static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 }; 811 int i, j; 812 813 if (rs->rs_nrates < nitems(rates)) 814 return 0; 815 for (i = 0; i < nitems(rates); i++) { 816 for (j = 0; j < rs->rs_nrates; j++) { 817 int r = rs->rs_rates[j] & IEEE80211_RATE_VAL; 818 if (rates[i] == r) 819 goto next; 820 if (r > rates[i]) 821 return 0; 822 } 823 return 0; 824 next: 825 ; 826 } 827 return 1; 828 } 829 830 /* 831 * Mark the basic rates for the rate table based on the 832 * operating mode. For real 11g we mark all the 11b rates 833 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 834 * 11b rates. There's also a pseudo 11a-mode used to mark only 835 * the basic OFDM rates. 836 */ 837 static void 838 setbasicrates(struct ieee80211_rateset *rs, 839 enum ieee80211_phymode mode, int add) 840 { 841 static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = { 842 [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } }, 843 [IEEE80211_MODE_11B] = { 2, { 2, 4 } }, 844 /* NB: mixed b/g */ 845 [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } }, 846 [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } }, 847 [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } }, 848 [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } }, 849 [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } }, 850 [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } }, 851 [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } }, 852 /* NB: mixed b/g */ 853 [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } }, 854 }; 855 int i, j; 856 857 for (i = 0; i < rs->rs_nrates; i++) { 858 if (!add) 859 rs->rs_rates[i] &= IEEE80211_RATE_VAL; 860 for (j = 0; j < basic[mode].rs_nrates; j++) 861 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 862 rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 863 break; 864 } 865 } 866 } 867 868 /* 869 * Set the basic rates in a rate set. 870 */ 871 void 872 ieee80211_setbasicrates(struct ieee80211_rateset *rs, 873 enum ieee80211_phymode mode) 874 { 875 setbasicrates(rs, mode, 0); 876 } 877 878 /* 879 * Add basic rates to a rate set. 880 */ 881 void 882 ieee80211_addbasicrates(struct ieee80211_rateset *rs, 883 enum ieee80211_phymode mode) 884 { 885 setbasicrates(rs, mode, 1); 886 } 887 888 /* 889 * WME protocol support. 890 * 891 * The default 11a/b/g/n parameters come from the WiFi Alliance WMM 892 * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n 893 * Draft 2.0 Test Plan (Appendix D). 894 * 895 * Static/Dynamic Turbo mode settings come from Atheros. 896 */ 897 typedef struct phyParamType { 898 uint8_t aifsn; 899 uint8_t logcwmin; 900 uint8_t logcwmax; 901 uint16_t txopLimit; 902 uint8_t acm; 903 } paramType; 904 905 static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = { 906 [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 }, 907 [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 }, 908 [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 }, 909 [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 }, 910 [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 }, 911 [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 }, 912 [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 }, 913 [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 }, 914 [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 }, 915 [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 }, 916 [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 }, 917 [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 }, 918 }; 919 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = { 920 [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 }, 921 [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 }, 922 [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 }, 923 [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 }, 924 [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 }, 925 [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 }, 926 [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 }, 927 [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 }, 928 [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 }, 929 [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 }, 930 [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 }, 931 [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 }, 932 }; 933 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = { 934 [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 }, 935 [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 }, 936 [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 }, 937 [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 }, 938 [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 }, 939 [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 }, 940 [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 }, 941 [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 }, 942 [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 }, 943 [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 }, 944 [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 }, 945 [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 }, 946 }; 947 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = { 948 [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 }, 949 [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 }, 950 [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 }, 951 [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 }, 952 [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 }, 953 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 954 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 955 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 956 [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 }, 957 [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 }, 958 [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 }, 959 [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 }, 960 }; 961 962 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = { 963 [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 }, 964 [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 }, 965 [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 }, 966 [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 }, 967 [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 }, 968 [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 }, 969 [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 }, 970 [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 }, 971 [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 }, 972 [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 }, 973 [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 }, 974 [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 }, 975 }; 976 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = { 977 [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 }, 978 [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 }, 979 [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 }, 980 [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 }, 981 [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 }, 982 [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 }, 983 [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 }, 984 [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 }, 985 [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 }, 986 [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 }, 987 [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 }, 988 [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 }, 989 }; 990 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = { 991 [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 }, 992 [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 }, 993 [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 }, 994 [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 }, 995 [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 }, 996 [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 997 [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 998 [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 999 [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 }, 1000 [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 }, 1001 [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 }, 1002 [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 }, 1003 }; 1004 1005 static void 1006 _setifsparams(struct wmeParams *wmep, const paramType *phy) 1007 { 1008 wmep->wmep_aifsn = phy->aifsn; 1009 wmep->wmep_logcwmin = phy->logcwmin; 1010 wmep->wmep_logcwmax = phy->logcwmax; 1011 wmep->wmep_txopLimit = phy->txopLimit; 1012 } 1013 1014 static void 1015 setwmeparams(struct ieee80211vap *vap, const char *type, int ac, 1016 struct wmeParams *wmep, const paramType *phy) 1017 { 1018 wmep->wmep_acm = phy->acm; 1019 _setifsparams(wmep, phy); 1020 1021 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1022 "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n", 1023 ieee80211_wme_acnames[ac], type, 1024 wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin, 1025 wmep->wmep_logcwmax, wmep->wmep_txopLimit); 1026 } 1027 1028 static void 1029 ieee80211_wme_initparams_locked(struct ieee80211vap *vap) 1030 { 1031 struct ieee80211com *ic = vap->iv_ic; 1032 struct ieee80211_wme_state *wme = &ic->ic_wme; 1033 const paramType *pPhyParam, *pBssPhyParam; 1034 struct wmeParams *wmep; 1035 enum ieee80211_phymode mode; 1036 int i; 1037 1038 IEEE80211_LOCK_ASSERT(ic); 1039 1040 if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1) 1041 return; 1042 1043 /* 1044 * Clear the wme cap_info field so a qoscount from a previous 1045 * vap doesn't confuse later code which only parses the beacon 1046 * field and updates hardware when said field changes. 1047 * Otherwise the hardware is programmed with defaults, not what 1048 * the beacon actually announces. 1049 */ 1050 wme->wme_wmeChanParams.cap_info = 0; 1051 1052 /* 1053 * Select mode; we can be called early in which case we 1054 * always use auto mode. We know we'll be called when 1055 * entering the RUN state with bsschan setup properly 1056 * so state will eventually get set correctly 1057 */ 1058 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 1059 mode = ieee80211_chan2mode(ic->ic_bsschan); 1060 else 1061 mode = IEEE80211_MODE_AUTO; 1062 for (i = 0; i < WME_NUM_AC; i++) { 1063 switch (i) { 1064 case WME_AC_BK: 1065 pPhyParam = &phyParamForAC_BK[mode]; 1066 pBssPhyParam = &phyParamForAC_BK[mode]; 1067 break; 1068 case WME_AC_VI: 1069 pPhyParam = &phyParamForAC_VI[mode]; 1070 pBssPhyParam = &bssPhyParamForAC_VI[mode]; 1071 break; 1072 case WME_AC_VO: 1073 pPhyParam = &phyParamForAC_VO[mode]; 1074 pBssPhyParam = &bssPhyParamForAC_VO[mode]; 1075 break; 1076 case WME_AC_BE: 1077 default: 1078 pPhyParam = &phyParamForAC_BE[mode]; 1079 pBssPhyParam = &bssPhyParamForAC_BE[mode]; 1080 break; 1081 } 1082 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 1083 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 1084 setwmeparams(vap, "chan", i, wmep, pPhyParam); 1085 } else { 1086 setwmeparams(vap, "chan", i, wmep, pBssPhyParam); 1087 } 1088 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 1089 setwmeparams(vap, "bss ", i, wmep, pBssPhyParam); 1090 } 1091 /* NB: check ic_bss to avoid NULL deref on initial attach */ 1092 if (vap->iv_bss != NULL) { 1093 /* 1094 * Calculate aggressive mode switching threshold based 1095 * on beacon interval. This doesn't need locking since 1096 * we're only called before entering the RUN state at 1097 * which point we start sending beacon frames. 1098 */ 1099 wme->wme_hipri_switch_thresh = 1100 (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100; 1101 wme->wme_flags &= ~WME_F_AGGRMODE; 1102 ieee80211_wme_updateparams(vap); 1103 } 1104 } 1105 1106 void 1107 ieee80211_wme_initparams(struct ieee80211vap *vap) 1108 { 1109 struct ieee80211com *ic = vap->iv_ic; 1110 1111 IEEE80211_LOCK(ic); 1112 ieee80211_wme_initparams_locked(vap); 1113 IEEE80211_UNLOCK(ic); 1114 } 1115 1116 /* 1117 * Update WME parameters for ourself and the BSS. 1118 */ 1119 void 1120 ieee80211_wme_updateparams_locked(struct ieee80211vap *vap) 1121 { 1122 static const paramType aggrParam[IEEE80211_MODE_MAX] = { 1123 [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 }, 1124 [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 }, 1125 [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 }, 1126 [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 }, 1127 [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 }, 1128 [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 }, 1129 [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 }, 1130 [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 }, 1131 [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 }, 1132 [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 }, 1133 [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 1134 [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 1135 }; 1136 struct ieee80211com *ic = vap->iv_ic; 1137 struct ieee80211_wme_state *wme = &ic->ic_wme; 1138 const struct wmeParams *wmep; 1139 struct wmeParams *chanp, *bssp; 1140 enum ieee80211_phymode mode; 1141 int i; 1142 int do_aggrmode = 0; 1143 1144 /* 1145 * Set up the channel access parameters for the physical 1146 * device. First populate the configured settings. 1147 */ 1148 for (i = 0; i < WME_NUM_AC; i++) { 1149 chanp = &wme->wme_chanParams.cap_wmeParams[i]; 1150 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 1151 chanp->wmep_aifsn = wmep->wmep_aifsn; 1152 chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1153 chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1154 chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1155 1156 chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 1157 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 1158 chanp->wmep_aifsn = wmep->wmep_aifsn; 1159 chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1160 chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1161 chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1162 } 1163 1164 /* 1165 * Select mode; we can be called early in which case we 1166 * always use auto mode. We know we'll be called when 1167 * entering the RUN state with bsschan setup properly 1168 * so state will eventually get set correctly 1169 */ 1170 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 1171 mode = ieee80211_chan2mode(ic->ic_bsschan); 1172 else 1173 mode = IEEE80211_MODE_AUTO; 1174 1175 /* 1176 * This implements aggressive mode as found in certain 1177 * vendors' AP's. When there is significant high 1178 * priority (VI/VO) traffic in the BSS throttle back BE 1179 * traffic by using conservative parameters. Otherwise 1180 * BE uses aggressive params to optimize performance of 1181 * legacy/non-QoS traffic. 1182 */ 1183 1184 /* Hostap? Only if aggressive mode is enabled */ 1185 if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1186 (wme->wme_flags & WME_F_AGGRMODE) != 0) 1187 do_aggrmode = 1; 1188 1189 /* 1190 * Station? Only if we're in a non-QoS BSS. 1191 */ 1192 else if ((vap->iv_opmode == IEEE80211_M_STA && 1193 (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0)) 1194 do_aggrmode = 1; 1195 1196 /* 1197 * IBSS? Only if we we have WME enabled. 1198 */ 1199 else if ((vap->iv_opmode == IEEE80211_M_IBSS) && 1200 (vap->iv_flags & IEEE80211_F_WME)) 1201 do_aggrmode = 1; 1202 1203 /* 1204 * If WME is disabled on this VAP, default to aggressive mode 1205 * regardless of the configuration. 1206 */ 1207 if ((vap->iv_flags & IEEE80211_F_WME) == 0) 1208 do_aggrmode = 1; 1209 1210 /* XXX WDS? */ 1211 1212 /* XXX MBSS? */ 1213 1214 if (do_aggrmode) { 1215 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1216 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1217 1218 chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn; 1219 chanp->wmep_logcwmin = bssp->wmep_logcwmin = 1220 aggrParam[mode].logcwmin; 1221 chanp->wmep_logcwmax = bssp->wmep_logcwmax = 1222 aggrParam[mode].logcwmax; 1223 chanp->wmep_txopLimit = bssp->wmep_txopLimit = 1224 (vap->iv_flags & IEEE80211_F_BURST) ? 1225 aggrParam[mode].txopLimit : 0; 1226 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1227 "update %s (chan+bss) [acm %u aifsn %u logcwmin %u " 1228 "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE], 1229 chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin, 1230 chanp->wmep_logcwmax, chanp->wmep_txopLimit); 1231 } 1232 1233 1234 /* 1235 * Change the contention window based on the number of associated 1236 * stations. If the number of associated stations is 1 and 1237 * aggressive mode is enabled, lower the contention window even 1238 * further. 1239 */ 1240 if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1241 ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 1242 static const uint8_t logCwMin[IEEE80211_MODE_MAX] = { 1243 [IEEE80211_MODE_AUTO] = 3, 1244 [IEEE80211_MODE_11A] = 3, 1245 [IEEE80211_MODE_11B] = 4, 1246 [IEEE80211_MODE_11G] = 3, 1247 [IEEE80211_MODE_FH] = 4, 1248 [IEEE80211_MODE_TURBO_A] = 3, 1249 [IEEE80211_MODE_TURBO_G] = 3, 1250 [IEEE80211_MODE_STURBO_A] = 3, 1251 [IEEE80211_MODE_HALF] = 3, 1252 [IEEE80211_MODE_QUARTER] = 3, 1253 [IEEE80211_MODE_11NA] = 3, 1254 [IEEE80211_MODE_11NG] = 3, 1255 }; 1256 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1257 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1258 1259 chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode]; 1260 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1261 "update %s (chan+bss) logcwmin %u\n", 1262 ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin); 1263 } 1264 1265 /* 1266 * Arrange for the beacon update. 1267 * 1268 * XXX what about MBSS, WDS? 1269 */ 1270 if (vap->iv_opmode == IEEE80211_M_HOSTAP 1271 || vap->iv_opmode == IEEE80211_M_IBSS) { 1272 /* 1273 * Arrange for a beacon update and bump the parameter 1274 * set number so associated stations load the new values. 1275 */ 1276 wme->wme_bssChanParams.cap_info = 1277 (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 1278 ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME); 1279 } 1280 1281 /* schedule the deferred WME update */ 1282 ieee80211_runtask(ic, &ic->ic_wme_task); 1283 1284 IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1285 "%s: WME params updated, cap_info 0x%x\n", __func__, 1286 vap->iv_opmode == IEEE80211_M_STA ? 1287 wme->wme_wmeChanParams.cap_info : 1288 wme->wme_bssChanParams.cap_info); 1289 } 1290 1291 void 1292 ieee80211_wme_updateparams(struct ieee80211vap *vap) 1293 { 1294 struct ieee80211com *ic = vap->iv_ic; 1295 1296 if (ic->ic_caps & IEEE80211_C_WME) { 1297 IEEE80211_LOCK(ic); 1298 ieee80211_wme_updateparams_locked(vap); 1299 IEEE80211_UNLOCK(ic); 1300 } 1301 } 1302 1303 static void 1304 parent_updown(void *arg, int npending) 1305 { 1306 struct ieee80211com *ic = arg; 1307 1308 ic->ic_parent(ic); 1309 } 1310 1311 static void 1312 update_mcast(void *arg, int npending) 1313 { 1314 struct ieee80211com *ic = arg; 1315 1316 ic->ic_update_mcast(ic); 1317 } 1318 1319 static void 1320 update_promisc(void *arg, int npending) 1321 { 1322 struct ieee80211com *ic = arg; 1323 1324 ic->ic_update_promisc(ic); 1325 } 1326 1327 static void 1328 update_channel(void *arg, int npending) 1329 { 1330 struct ieee80211com *ic = arg; 1331 1332 ic->ic_set_channel(ic); 1333 ieee80211_radiotap_chan_change(ic); 1334 } 1335 1336 static void 1337 update_chw(void *arg, int npending) 1338 { 1339 struct ieee80211com *ic = arg; 1340 1341 /* 1342 * XXX should we defer the channel width _config_ update until now? 1343 */ 1344 ic->ic_update_chw(ic); 1345 } 1346 1347 static void 1348 update_wme(void *arg, int npending) 1349 { 1350 struct ieee80211com *ic = arg; 1351 1352 /* 1353 * XXX should we defer the WME configuration update until now? 1354 */ 1355 ic->ic_wme.wme_update(ic); 1356 } 1357 1358 static void 1359 restart_vaps(void *arg, int npending) 1360 { 1361 struct ieee80211com *ic = arg; 1362 1363 ieee80211_suspend_all(ic); 1364 ieee80211_resume_all(ic); 1365 } 1366 1367 /* 1368 * Block until the parent is in a known state. This is 1369 * used after any operations that dispatch a task (e.g. 1370 * to auto-configure the parent device up/down). 1371 */ 1372 void 1373 ieee80211_waitfor_parent(struct ieee80211com *ic) 1374 { 1375 taskqueue_block(ic->ic_tq); 1376 ieee80211_draintask(ic, &ic->ic_parent_task); 1377 ieee80211_draintask(ic, &ic->ic_mcast_task); 1378 ieee80211_draintask(ic, &ic->ic_promisc_task); 1379 ieee80211_draintask(ic, &ic->ic_chan_task); 1380 ieee80211_draintask(ic, &ic->ic_bmiss_task); 1381 ieee80211_draintask(ic, &ic->ic_chw_task); 1382 ieee80211_draintask(ic, &ic->ic_wme_task); 1383 taskqueue_unblock(ic->ic_tq); 1384 } 1385 1386 /* 1387 * Check to see whether the current channel needs reset. 1388 * 1389 * Some devices don't handle being given an invalid channel 1390 * in their operating mode very well (eg wpi(4) will throw a 1391 * firmware exception.) 1392 * 1393 * Return 0 if we're ok, 1 if the channel needs to be reset. 1394 * 1395 * See PR kern/202502. 1396 */ 1397 static int 1398 ieee80211_start_check_reset_chan(struct ieee80211vap *vap) 1399 { 1400 struct ieee80211com *ic = vap->iv_ic; 1401 1402 if ((vap->iv_opmode == IEEE80211_M_IBSS && 1403 IEEE80211_IS_CHAN_NOADHOC(ic->ic_curchan)) || 1404 (vap->iv_opmode == IEEE80211_M_HOSTAP && 1405 IEEE80211_IS_CHAN_NOHOSTAP(ic->ic_curchan))) 1406 return (1); 1407 return (0); 1408 } 1409 1410 /* 1411 * Reset the curchan to a known good state. 1412 */ 1413 static void 1414 ieee80211_start_reset_chan(struct ieee80211vap *vap) 1415 { 1416 struct ieee80211com *ic = vap->iv_ic; 1417 1418 ic->ic_curchan = &ic->ic_channels[0]; 1419 } 1420 1421 /* 1422 * Start a vap running. If this is the first vap to be 1423 * set running on the underlying device then we 1424 * automatically bring the device up. 1425 */ 1426 void 1427 ieee80211_start_locked(struct ieee80211vap *vap) 1428 { 1429 struct ifnet *ifp = vap->iv_ifp; 1430 struct ieee80211com *ic = vap->iv_ic; 1431 1432 IEEE80211_LOCK_ASSERT(ic); 1433 1434 IEEE80211_DPRINTF(vap, 1435 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1436 "start running, %d vaps running\n", ic->ic_nrunning); 1437 1438 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1439 /* 1440 * Mark us running. Note that it's ok to do this first; 1441 * if we need to bring the parent device up we defer that 1442 * to avoid dropping the com lock. We expect the device 1443 * to respond to being marked up by calling back into us 1444 * through ieee80211_start_all at which point we'll come 1445 * back in here and complete the work. 1446 */ 1447 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1448 /* 1449 * We are not running; if this we are the first vap 1450 * to be brought up auto-up the parent if necessary. 1451 */ 1452 if (ic->ic_nrunning++ == 0) { 1453 1454 /* reset the channel to a known good channel */ 1455 if (ieee80211_start_check_reset_chan(vap)) 1456 ieee80211_start_reset_chan(vap); 1457 1458 IEEE80211_DPRINTF(vap, 1459 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1460 "%s: up parent %s\n", __func__, ic->ic_name); 1461 ieee80211_runtask(ic, &ic->ic_parent_task); 1462 return; 1463 } 1464 } 1465 /* 1466 * If the parent is up and running, then kick the 1467 * 802.11 state machine as appropriate. 1468 */ 1469 if (vap->iv_roaming != IEEE80211_ROAMING_MANUAL) { 1470 if (vap->iv_opmode == IEEE80211_M_STA) { 1471 #if 0 1472 /* XXX bypasses scan too easily; disable for now */ 1473 /* 1474 * Try to be intelligent about clocking the state 1475 * machine. If we're currently in RUN state then 1476 * we should be able to apply any new state/parameters 1477 * simply by re-associating. Otherwise we need to 1478 * re-scan to select an appropriate ap. 1479 */ 1480 if (vap->iv_state >= IEEE80211_S_RUN) 1481 ieee80211_new_state_locked(vap, 1482 IEEE80211_S_ASSOC, 1); 1483 else 1484 #endif 1485 ieee80211_new_state_locked(vap, 1486 IEEE80211_S_SCAN, 0); 1487 } else { 1488 /* 1489 * For monitor+wds mode there's nothing to do but 1490 * start running. Otherwise if this is the first 1491 * vap to be brought up, start a scan which may be 1492 * preempted if the station is locked to a particular 1493 * channel. 1494 */ 1495 vap->iv_flags_ext |= IEEE80211_FEXT_REINIT; 1496 if (vap->iv_opmode == IEEE80211_M_MONITOR || 1497 vap->iv_opmode == IEEE80211_M_WDS) 1498 ieee80211_new_state_locked(vap, 1499 IEEE80211_S_RUN, -1); 1500 else 1501 ieee80211_new_state_locked(vap, 1502 IEEE80211_S_SCAN, 0); 1503 } 1504 } 1505 } 1506 1507 /* 1508 * Start a single vap. 1509 */ 1510 void 1511 ieee80211_init(void *arg) 1512 { 1513 struct ieee80211vap *vap = arg; 1514 1515 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1516 "%s\n", __func__); 1517 1518 IEEE80211_LOCK(vap->iv_ic); 1519 ieee80211_start_locked(vap); 1520 IEEE80211_UNLOCK(vap->iv_ic); 1521 } 1522 1523 /* 1524 * Start all runnable vap's on a device. 1525 */ 1526 void 1527 ieee80211_start_all(struct ieee80211com *ic) 1528 { 1529 struct ieee80211vap *vap; 1530 1531 IEEE80211_LOCK(ic); 1532 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1533 struct ifnet *ifp = vap->iv_ifp; 1534 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1535 ieee80211_start_locked(vap); 1536 } 1537 IEEE80211_UNLOCK(ic); 1538 } 1539 1540 /* 1541 * Stop a vap. We force it down using the state machine 1542 * then mark it's ifnet not running. If this is the last 1543 * vap running on the underlying device then we close it 1544 * too to insure it will be properly initialized when the 1545 * next vap is brought up. 1546 */ 1547 void 1548 ieee80211_stop_locked(struct ieee80211vap *vap) 1549 { 1550 struct ieee80211com *ic = vap->iv_ic; 1551 struct ifnet *ifp = vap->iv_ifp; 1552 1553 IEEE80211_LOCK_ASSERT(ic); 1554 1555 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1556 "stop running, %d vaps running\n", ic->ic_nrunning); 1557 1558 ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1); 1559 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1560 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */ 1561 if (--ic->ic_nrunning == 0) { 1562 IEEE80211_DPRINTF(vap, 1563 IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1564 "down parent %s\n", ic->ic_name); 1565 ieee80211_runtask(ic, &ic->ic_parent_task); 1566 } 1567 } 1568 } 1569 1570 void 1571 ieee80211_stop(struct ieee80211vap *vap) 1572 { 1573 struct ieee80211com *ic = vap->iv_ic; 1574 1575 IEEE80211_LOCK(ic); 1576 ieee80211_stop_locked(vap); 1577 IEEE80211_UNLOCK(ic); 1578 } 1579 1580 /* 1581 * Stop all vap's running on a device. 1582 */ 1583 void 1584 ieee80211_stop_all(struct ieee80211com *ic) 1585 { 1586 struct ieee80211vap *vap; 1587 1588 IEEE80211_LOCK(ic); 1589 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1590 struct ifnet *ifp = vap->iv_ifp; 1591 if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1592 ieee80211_stop_locked(vap); 1593 } 1594 IEEE80211_UNLOCK(ic); 1595 1596 ieee80211_waitfor_parent(ic); 1597 } 1598 1599 /* 1600 * Stop all vap's running on a device and arrange 1601 * for those that were running to be resumed. 1602 */ 1603 void 1604 ieee80211_suspend_all(struct ieee80211com *ic) 1605 { 1606 struct ieee80211vap *vap; 1607 1608 IEEE80211_LOCK(ic); 1609 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1610 struct ifnet *ifp = vap->iv_ifp; 1611 if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */ 1612 vap->iv_flags_ext |= IEEE80211_FEXT_RESUME; 1613 ieee80211_stop_locked(vap); 1614 } 1615 } 1616 IEEE80211_UNLOCK(ic); 1617 1618 ieee80211_waitfor_parent(ic); 1619 } 1620 1621 /* 1622 * Start all vap's marked for resume. 1623 */ 1624 void 1625 ieee80211_resume_all(struct ieee80211com *ic) 1626 { 1627 struct ieee80211vap *vap; 1628 1629 IEEE80211_LOCK(ic); 1630 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1631 struct ifnet *ifp = vap->iv_ifp; 1632 if (!IFNET_IS_UP_RUNNING(ifp) && 1633 (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) { 1634 vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME; 1635 ieee80211_start_locked(vap); 1636 } 1637 } 1638 IEEE80211_UNLOCK(ic); 1639 } 1640 1641 /* 1642 * Restart all vap's running on a device. 1643 */ 1644 void 1645 ieee80211_restart_all(struct ieee80211com *ic) 1646 { 1647 /* 1648 * NB: do not use ieee80211_runtask here, we will 1649 * block & drain net80211 taskqueue. 1650 */ 1651 #if defined(__DragonFly__) 1652 taskqueue_enqueue(taskqueue_thread[0], &ic->ic_restart_task); 1653 #else 1654 taskqueue_enqueue(taskqueue_thread, &ic->ic_restart_task); 1655 #endif 1656 } 1657 1658 void 1659 ieee80211_beacon_miss(struct ieee80211com *ic) 1660 { 1661 IEEE80211_LOCK(ic); 1662 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1663 /* Process in a taskq, the handler may reenter the driver */ 1664 ieee80211_runtask(ic, &ic->ic_bmiss_task); 1665 } 1666 IEEE80211_UNLOCK(ic); 1667 } 1668 1669 static void 1670 beacon_miss(void *arg, int npending) 1671 { 1672 struct ieee80211com *ic = arg; 1673 struct ieee80211vap *vap; 1674 1675 IEEE80211_LOCK(ic); 1676 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1677 /* 1678 * We only pass events through for sta vap's in RUN+ state; 1679 * may be too restrictive but for now this saves all the 1680 * handlers duplicating these checks. 1681 */ 1682 if (vap->iv_opmode == IEEE80211_M_STA && 1683 vap->iv_state >= IEEE80211_S_RUN && 1684 vap->iv_bmiss != NULL) 1685 vap->iv_bmiss(vap); 1686 } 1687 IEEE80211_UNLOCK(ic); 1688 } 1689 1690 static void 1691 beacon_swmiss(void *arg, int npending) 1692 { 1693 struct ieee80211vap *vap = arg; 1694 struct ieee80211com *ic = vap->iv_ic; 1695 1696 IEEE80211_LOCK(ic); 1697 if (vap->iv_state >= IEEE80211_S_RUN) { 1698 /* XXX Call multiple times if npending > zero? */ 1699 vap->iv_bmiss(vap); 1700 } 1701 IEEE80211_UNLOCK(ic); 1702 } 1703 1704 /* 1705 * Software beacon miss handling. Check if any beacons 1706 * were received in the last period. If not post a 1707 * beacon miss; otherwise reset the counter. 1708 */ 1709 void 1710 ieee80211_swbmiss(void *arg) 1711 { 1712 struct ieee80211vap *vap = arg; 1713 struct ieee80211com *ic = vap->iv_ic; 1714 1715 IEEE80211_LOCK_ASSERT(ic); 1716 1717 KASSERT(vap->iv_state >= IEEE80211_S_RUN, 1718 ("wrong state %d", vap->iv_state)); 1719 1720 if (ic->ic_flags & IEEE80211_F_SCAN) { 1721 /* 1722 * If scanning just ignore and reset state. If we get a 1723 * bmiss after coming out of scan because we haven't had 1724 * time to receive a beacon then we should probe the AP 1725 * before posting a real bmiss (unless iv_bmiss_max has 1726 * been artifiically lowered). A cleaner solution might 1727 * be to disable the timer on scan start/end but to handle 1728 * case of multiple sta vap's we'd need to disable the 1729 * timers of all affected vap's. 1730 */ 1731 vap->iv_swbmiss_count = 0; 1732 } else if (vap->iv_swbmiss_count == 0) { 1733 if (vap->iv_bmiss != NULL) 1734 ieee80211_runtask(ic, &vap->iv_swbmiss_task); 1735 } else 1736 vap->iv_swbmiss_count = 0; 1737 callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 1738 ieee80211_swbmiss, vap); 1739 } 1740 1741 /* 1742 * Start an 802.11h channel switch. We record the parameters, 1743 * mark the operation pending, notify each vap through the 1744 * beacon update mechanism so it can update the beacon frame 1745 * contents, and then switch vap's to CSA state to block outbound 1746 * traffic. Devices that handle CSA directly can use the state 1747 * switch to do the right thing so long as they call 1748 * ieee80211_csa_completeswitch when it's time to complete the 1749 * channel change. Devices that depend on the net80211 layer can 1750 * use ieee80211_beacon_update to handle the countdown and the 1751 * channel switch. 1752 */ 1753 void 1754 ieee80211_csa_startswitch(struct ieee80211com *ic, 1755 struct ieee80211_channel *c, int mode, int count) 1756 { 1757 struct ieee80211vap *vap; 1758 1759 IEEE80211_LOCK_ASSERT(ic); 1760 1761 ic->ic_csa_newchan = c; 1762 ic->ic_csa_mode = mode; 1763 ic->ic_csa_count = count; 1764 ic->ic_flags |= IEEE80211_F_CSAPENDING; 1765 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1766 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 1767 vap->iv_opmode == IEEE80211_M_IBSS || 1768 vap->iv_opmode == IEEE80211_M_MBSS) 1769 ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA); 1770 /* switch to CSA state to block outbound traffic */ 1771 if (vap->iv_state == IEEE80211_S_RUN) 1772 ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0); 1773 } 1774 ieee80211_notify_csa(ic, c, mode, count); 1775 } 1776 1777 /* 1778 * Complete the channel switch by transitioning all CSA VAPs to RUN. 1779 * This is called by both the completion and cancellation functions 1780 * so each VAP is placed back in the RUN state and can thus transmit. 1781 */ 1782 static void 1783 csa_completeswitch(struct ieee80211com *ic) 1784 { 1785 struct ieee80211vap *vap; 1786 1787 ic->ic_csa_newchan = NULL; 1788 ic->ic_flags &= ~IEEE80211_F_CSAPENDING; 1789 1790 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1791 if (vap->iv_state == IEEE80211_S_CSA) 1792 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1793 } 1794 1795 /* 1796 * Complete an 802.11h channel switch started by ieee80211_csa_startswitch. 1797 * We clear state and move all vap's in CSA state to RUN state 1798 * so they can again transmit. 1799 * 1800 * Although this may not be completely correct, update the BSS channel 1801 * for each VAP to the newly configured channel. The setcurchan sets 1802 * the current operating channel for the interface (so the radio does 1803 * switch over) but the VAP BSS isn't updated, leading to incorrectly 1804 * reported information via ioctl. 1805 */ 1806 void 1807 ieee80211_csa_completeswitch(struct ieee80211com *ic) 1808 { 1809 struct ieee80211vap *vap; 1810 1811 IEEE80211_LOCK_ASSERT(ic); 1812 1813 KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending")); 1814 1815 ieee80211_setcurchan(ic, ic->ic_csa_newchan); 1816 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1817 if (vap->iv_state == IEEE80211_S_CSA) 1818 vap->iv_bss->ni_chan = ic->ic_curchan; 1819 1820 csa_completeswitch(ic); 1821 } 1822 1823 /* 1824 * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch. 1825 * We clear state and move all vap's in CSA state to RUN state 1826 * so they can again transmit. 1827 */ 1828 void 1829 ieee80211_csa_cancelswitch(struct ieee80211com *ic) 1830 { 1831 IEEE80211_LOCK_ASSERT(ic); 1832 1833 csa_completeswitch(ic); 1834 } 1835 1836 /* 1837 * Complete a DFS CAC started by ieee80211_dfs_cac_start. 1838 * We clear state and move all vap's in CAC state to RUN state. 1839 */ 1840 void 1841 ieee80211_cac_completeswitch(struct ieee80211vap *vap0) 1842 { 1843 struct ieee80211com *ic = vap0->iv_ic; 1844 struct ieee80211vap *vap; 1845 1846 IEEE80211_LOCK(ic); 1847 /* 1848 * Complete CAC state change for lead vap first; then 1849 * clock all the other vap's waiting. 1850 */ 1851 KASSERT(vap0->iv_state == IEEE80211_S_CAC, 1852 ("wrong state %d", vap0->iv_state)); 1853 ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0); 1854 1855 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1856 if (vap->iv_state == IEEE80211_S_CAC) 1857 ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1858 IEEE80211_UNLOCK(ic); 1859 } 1860 1861 /* 1862 * Force all vap's other than the specified vap to the INIT state 1863 * and mark them as waiting for a scan to complete. These vaps 1864 * will be brought up when the scan completes and the scanning vap 1865 * reaches RUN state by wakeupwaiting. 1866 */ 1867 static void 1868 markwaiting(struct ieee80211vap *vap0) 1869 { 1870 struct ieee80211com *ic = vap0->iv_ic; 1871 struct ieee80211vap *vap; 1872 1873 IEEE80211_LOCK_ASSERT(ic); 1874 1875 /* 1876 * A vap list entry can not disappear since we are running on the 1877 * taskqueue and a vap destroy will queue and drain another state 1878 * change task. 1879 */ 1880 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1881 if (vap == vap0) 1882 continue; 1883 if (vap->iv_state != IEEE80211_S_INIT) { 1884 /* NB: iv_newstate may drop the lock */ 1885 vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 1886 IEEE80211_LOCK_ASSERT(ic); 1887 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1888 } 1889 } 1890 } 1891 1892 /* 1893 * Wakeup all vap's waiting for a scan to complete. This is the 1894 * companion to markwaiting (above) and is used to coordinate 1895 * multiple vaps scanning. 1896 * This is called from the state taskqueue. 1897 */ 1898 static void 1899 wakeupwaiting(struct ieee80211vap *vap0) 1900 { 1901 struct ieee80211com *ic = vap0->iv_ic; 1902 struct ieee80211vap *vap; 1903 1904 IEEE80211_LOCK_ASSERT(ic); 1905 1906 /* 1907 * A vap list entry can not disappear since we are running on the 1908 * taskqueue and a vap destroy will queue and drain another state 1909 * change task. 1910 */ 1911 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1912 if (vap == vap0) 1913 continue; 1914 if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) { 1915 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1916 /* NB: sta's cannot go INIT->RUN */ 1917 /* NB: iv_newstate may drop the lock */ 1918 vap->iv_newstate(vap, 1919 vap->iv_opmode == IEEE80211_M_STA ? 1920 IEEE80211_S_SCAN : IEEE80211_S_RUN, 0); 1921 IEEE80211_LOCK_ASSERT(ic); 1922 } 1923 } 1924 } 1925 1926 /* 1927 * Handle post state change work common to all operating modes. 1928 */ 1929 static void 1930 ieee80211_newstate_cb(void *xvap, int npending) 1931 { 1932 struct ieee80211vap *vap = xvap; 1933 struct ieee80211com *ic = vap->iv_ic; 1934 enum ieee80211_state nstate, ostate; 1935 int arg, rc; 1936 1937 IEEE80211_LOCK(ic); 1938 nstate = vap->iv_nstate; 1939 arg = vap->iv_nstate_arg; 1940 1941 if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) { 1942 /* 1943 * We have been requested to drop back to the INIT before 1944 * proceeding to the new state. 1945 */ 1946 /* Deny any state changes while we are here. */ 1947 vap->iv_nstate = IEEE80211_S_INIT; 1948 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1949 "%s: %s -> %s arg %d\n", __func__, 1950 ieee80211_state_name[vap->iv_state], 1951 ieee80211_state_name[vap->iv_nstate], arg); 1952 vap->iv_newstate(vap, vap->iv_nstate, 0); 1953 IEEE80211_LOCK_ASSERT(ic); 1954 vap->iv_flags_ext &= ~(IEEE80211_FEXT_REINIT | 1955 IEEE80211_FEXT_STATEWAIT); 1956 /* enqueue new state transition after cancel_scan() task */ 1957 ieee80211_new_state_locked(vap, nstate, arg); 1958 goto done; 1959 } 1960 1961 ostate = vap->iv_state; 1962 if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) { 1963 /* 1964 * SCAN was forced; e.g. on beacon miss. Force other running 1965 * vap's to INIT state and mark them as waiting for the scan to 1966 * complete. This insures they don't interfere with our 1967 * scanning. Since we are single threaded the vaps can not 1968 * transition again while we are executing. 1969 * 1970 * XXX not always right, assumes ap follows sta 1971 */ 1972 markwaiting(vap); 1973 } 1974 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1975 "%s: %s -> %s arg %d\n", __func__, 1976 ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); 1977 1978 rc = vap->iv_newstate(vap, nstate, arg); 1979 IEEE80211_LOCK_ASSERT(ic); 1980 vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT; 1981 if (rc != 0) { 1982 /* State transition failed */ 1983 KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred")); 1984 KASSERT(nstate != IEEE80211_S_INIT, 1985 ("INIT state change failed")); 1986 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1987 "%s: %s returned error %d\n", __func__, 1988 ieee80211_state_name[nstate], rc); 1989 goto done; 1990 } 1991 1992 /* No actual transition, skip post processing */ 1993 if (ostate == nstate) 1994 goto done; 1995 1996 if (nstate == IEEE80211_S_RUN) { 1997 /* 1998 * OACTIVE may be set on the vap if the upper layer 1999 * tried to transmit (e.g. IPv6 NDP) before we reach 2000 * RUN state. Clear it and restart xmit. 2001 * 2002 * Note this can also happen as a result of SLEEP->RUN 2003 * (i.e. coming out of power save mode). 2004 */ 2005 #if defined(__DragonFly__) 2006 struct ifaltq_subque *ifsq; 2007 int wst; 2008 2009 ifsq = ifq_get_subq_default(&vap->iv_ifp->if_snd); 2010 ifsq_clr_oactive(ifsq); 2011 wst = wlan_serialize_push(); 2012 vap->iv_ifp->if_start(vap->iv_ifp, ifsq); 2013 wlan_serialize_pop(wst); 2014 #else 2015 vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2016 #endif 2017 2018 /* 2019 * XXX TODO Kick-start a VAP queue - this should be a method! 2020 */ 2021 2022 /* bring up any vaps waiting on us */ 2023 wakeupwaiting(vap); 2024 } else if (nstate == IEEE80211_S_INIT) { 2025 /* 2026 * Flush the scan cache if we did the last scan (XXX?) 2027 * and flush any frames on send queues from this vap. 2028 * Note the mgt q is used only for legacy drivers and 2029 * will go away shortly. 2030 */ 2031 ieee80211_scan_flush(vap); 2032 2033 /* 2034 * XXX TODO: ic/vap queue flush 2035 */ 2036 } 2037 done: 2038 IEEE80211_UNLOCK(ic); 2039 } 2040 2041 /* 2042 * Public interface for initiating a state machine change. 2043 * This routine single-threads the request and coordinates 2044 * the scheduling of multiple vaps for the purpose of selecting 2045 * an operating channel. Specifically the following scenarios 2046 * are handled: 2047 * o only one vap can be selecting a channel so on transition to 2048 * SCAN state if another vap is already scanning then 2049 * mark the caller for later processing and return without 2050 * doing anything (XXX? expectations by caller of synchronous operation) 2051 * o only one vap can be doing CAC of a channel so on transition to 2052 * CAC state if another vap is already scanning for radar then 2053 * mark the caller for later processing and return without 2054 * doing anything (XXX? expectations by caller of synchronous operation) 2055 * o if another vap is already running when a request is made 2056 * to SCAN then an operating channel has been chosen; bypass 2057 * the scan and just join the channel 2058 * 2059 * Note that the state change call is done through the iv_newstate 2060 * method pointer so any driver routine gets invoked. The driver 2061 * will normally call back into operating mode-specific 2062 * ieee80211_newstate routines (below) unless it needs to completely 2063 * bypass the state machine (e.g. because the firmware has it's 2064 * own idea how things should work). Bypassing the net80211 layer 2065 * is usually a mistake and indicates lack of proper integration 2066 * with the net80211 layer. 2067 */ 2068 int 2069 ieee80211_new_state_locked(struct ieee80211vap *vap, 2070 enum ieee80211_state nstate, int arg) 2071 { 2072 struct ieee80211com *ic = vap->iv_ic; 2073 struct ieee80211vap *vp; 2074 enum ieee80211_state ostate; 2075 int nrunning, nscanning; 2076 2077 IEEE80211_LOCK_ASSERT(ic); 2078 2079 if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) { 2080 if (vap->iv_nstate == IEEE80211_S_INIT || 2081 ((vap->iv_state == IEEE80211_S_INIT || 2082 (vap->iv_flags_ext & IEEE80211_FEXT_REINIT)) && 2083 vap->iv_nstate == IEEE80211_S_SCAN && 2084 nstate > IEEE80211_S_SCAN)) { 2085 /* 2086 * XXX The vap is being stopped/started, 2087 * do not allow any other state changes 2088 * until this is completed. 2089 */ 2090 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2091 "%s: %s -> %s (%s) transition discarded\n", 2092 __func__, 2093 ieee80211_state_name[vap->iv_state], 2094 ieee80211_state_name[nstate], 2095 ieee80211_state_name[vap->iv_nstate]); 2096 return -1; 2097 } else if (vap->iv_state != vap->iv_nstate) { 2098 #if 0 2099 /* Warn if the previous state hasn't completed. */ 2100 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2101 "%s: pending %s -> %s transition lost\n", __func__, 2102 ieee80211_state_name[vap->iv_state], 2103 ieee80211_state_name[vap->iv_nstate]); 2104 #else 2105 /* XXX temporarily enable to identify issues */ 2106 if_printf(vap->iv_ifp, 2107 "%s: pending %s -> %s transition lost\n", 2108 __func__, ieee80211_state_name[vap->iv_state], 2109 ieee80211_state_name[vap->iv_nstate]); 2110 #endif 2111 } 2112 } 2113 2114 nrunning = nscanning = 0; 2115 /* XXX can track this state instead of calculating */ 2116 TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) { 2117 if (vp != vap) { 2118 if (vp->iv_state >= IEEE80211_S_RUN) 2119 nrunning++; 2120 /* XXX doesn't handle bg scan */ 2121 /* NB: CAC+AUTH+ASSOC treated like SCAN */ 2122 else if (vp->iv_state > IEEE80211_S_INIT) 2123 nscanning++; 2124 } 2125 } 2126 ostate = vap->iv_state; 2127 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2128 "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__, 2129 ieee80211_state_name[ostate], ieee80211_state_name[nstate], 2130 nrunning, nscanning); 2131 switch (nstate) { 2132 case IEEE80211_S_SCAN: 2133 if (ostate == IEEE80211_S_INIT) { 2134 /* 2135 * INIT -> SCAN happens on initial bringup. 2136 */ 2137 KASSERT(!(nscanning && nrunning), 2138 ("%d scanning and %d running", nscanning, nrunning)); 2139 if (nscanning) { 2140 /* 2141 * Someone is scanning, defer our state 2142 * change until the work has completed. 2143 */ 2144 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2145 "%s: defer %s -> %s\n", 2146 __func__, ieee80211_state_name[ostate], 2147 ieee80211_state_name[nstate]); 2148 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 2149 return 0; 2150 } 2151 if (nrunning) { 2152 /* 2153 * Someone is operating; just join the channel 2154 * they have chosen. 2155 */ 2156 /* XXX kill arg? */ 2157 /* XXX check each opmode, adhoc? */ 2158 if (vap->iv_opmode == IEEE80211_M_STA) 2159 nstate = IEEE80211_S_SCAN; 2160 else 2161 nstate = IEEE80211_S_RUN; 2162 #ifdef IEEE80211_DEBUG 2163 if (nstate != IEEE80211_S_SCAN) { 2164 IEEE80211_DPRINTF(vap, 2165 IEEE80211_MSG_STATE, 2166 "%s: override, now %s -> %s\n", 2167 __func__, 2168 ieee80211_state_name[ostate], 2169 ieee80211_state_name[nstate]); 2170 } 2171 #endif 2172 } 2173 } 2174 break; 2175 case IEEE80211_S_RUN: 2176 if (vap->iv_opmode == IEEE80211_M_WDS && 2177 (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) && 2178 nscanning) { 2179 /* 2180 * Legacy WDS with someone else scanning; don't 2181 * go online until that completes as we should 2182 * follow the other vap to the channel they choose. 2183 */ 2184 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2185 "%s: defer %s -> %s (legacy WDS)\n", __func__, 2186 ieee80211_state_name[ostate], 2187 ieee80211_state_name[nstate]); 2188 vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 2189 return 0; 2190 } 2191 if (vap->iv_opmode == IEEE80211_M_HOSTAP && 2192 IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) && 2193 (vap->iv_flags_ext & IEEE80211_FEXT_DFS) && 2194 !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) { 2195 /* 2196 * This is a DFS channel, transition to CAC state 2197 * instead of RUN. This allows us to initiate 2198 * Channel Availability Check (CAC) as specified 2199 * by 11h/DFS. 2200 */ 2201 nstate = IEEE80211_S_CAC; 2202 IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 2203 "%s: override %s -> %s (DFS)\n", __func__, 2204 ieee80211_state_name[ostate], 2205 ieee80211_state_name[nstate]); 2206 } 2207 break; 2208 case IEEE80211_S_INIT: 2209 /* cancel any scan in progress */ 2210 ieee80211_cancel_scan(vap); 2211 if (ostate == IEEE80211_S_INIT ) { 2212 /* XXX don't believe this */ 2213 /* INIT -> INIT. nothing to do */ 2214 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 2215 } 2216 /* fall thru... */ 2217 default: 2218 break; 2219 } 2220 /* defer the state change to a thread */ 2221 vap->iv_nstate = nstate; 2222 vap->iv_nstate_arg = arg; 2223 vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT; 2224 ieee80211_runtask(ic, &vap->iv_nstate_task); 2225 return EINPROGRESS; 2226 } 2227 2228 int 2229 ieee80211_new_state(struct ieee80211vap *vap, 2230 enum ieee80211_state nstate, int arg) 2231 { 2232 struct ieee80211com *ic = vap->iv_ic; 2233 int rc; 2234 2235 IEEE80211_LOCK(ic); 2236 rc = ieee80211_new_state_locked(vap, nstate, arg); 2237 IEEE80211_UNLOCK(ic); 2238 return rc; 2239 } 2240