1116742Ssam/*- 2116904Ssam * Copyright (c) 2001 Atsushi Onoe 3178354Ssam * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 4116742Ssam * All rights reserved. 5116742Ssam * 6116742Ssam * Redistribution and use in source and binary forms, with or without 7116742Ssam * modification, are permitted provided that the following conditions 8116742Ssam * are met: 9116742Ssam * 1. Redistributions of source code must retain the above copyright 10116904Ssam * notice, this list of conditions and the following disclaimer. 11116904Ssam * 2. Redistributions in binary form must reproduce the above copyright 12116904Ssam * notice, this list of conditions and the following disclaimer in the 13116904Ssam * documentation and/or other materials provided with the distribution. 14116742Ssam * 15116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16116904Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17116904Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18116904Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19116904Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20116904Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21116904Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22116904Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23116904Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24116904Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25116742Ssam */ 26116742Ssam 27116742Ssam#include <sys/cdefs.h> 28116742Ssam__FBSDID("$FreeBSD$"); 29116742Ssam 30116742Ssam/* 31116742Ssam * IEEE 802.11 protocol support. 32116742Ssam */ 33116742Ssam 34116742Ssam#include "opt_inet.h" 35178354Ssam#include "opt_wlan.h" 36116742Ssam 37116742Ssam#include <sys/param.h> 38138568Ssam#include <sys/kernel.h> 39170530Ssam#include <sys/systm.h> 40170530Ssam 41116742Ssam#include <sys/socket.h> 42178354Ssam#include <sys/sockio.h> 43116742Ssam 44116742Ssam#include <net/if.h> 45116742Ssam#include <net/if_media.h> 46138568Ssam#include <net/ethernet.h> /* XXX for ether_sprintf */ 47116742Ssam 48116742Ssam#include <net80211/ieee80211_var.h> 49178354Ssam#include <net80211/ieee80211_adhoc.h> 50178354Ssam#include <net80211/ieee80211_sta.h> 51178354Ssam#include <net80211/ieee80211_hostap.h> 52178354Ssam#include <net80211/ieee80211_wds.h> 53195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 54195618Srpaulo#include <net80211/ieee80211_mesh.h> 55195618Srpaulo#endif 56178354Ssam#include <net80211/ieee80211_monitor.h> 57178354Ssam#include <net80211/ieee80211_input.h> 58116742Ssam 59138568Ssam/* XXX tunables */ 60138568Ssam#define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */ 61138568Ssam#define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */ 62116742Ssam 63116742Ssamconst char *ieee80211_mgt_subtype_name[] = { 64116742Ssam "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp", 65116742Ssam "probe_req", "probe_resp", "reserved#6", "reserved#7", 66116742Ssam "beacon", "atim", "disassoc", "auth", 67218927Sbschmidt "deauth", "action", "action_noack", "reserved#15" 68116742Ssam}; 69138568Ssamconst char *ieee80211_ctl_subtype_name[] = { 70138568Ssam "reserved#0", "reserved#1", "reserved#2", "reserved#3", 71138568Ssam "reserved#3", "reserved#5", "reserved#6", "reserved#7", 72138568Ssam "reserved#8", "reserved#9", "ps_poll", "rts", 73138568Ssam "cts", "ack", "cf_end", "cf_end_ack" 74138568Ssam}; 75167283Ssamconst char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = { 76167283Ssam "IBSS", /* IEEE80211_M_IBSS */ 77167283Ssam "STA", /* IEEE80211_M_STA */ 78178354Ssam "WDS", /* IEEE80211_M_WDS */ 79167283Ssam "AHDEMO", /* IEEE80211_M_AHDEMO */ 80167283Ssam "HOSTAP", /* IEEE80211_M_HOSTAP */ 81195618Srpaulo "MONITOR", /* IEEE80211_M_MONITOR */ 82195618Srpaulo "MBSS" /* IEEE80211_M_MBSS */ 83167283Ssam}; 84117811Ssamconst char *ieee80211_state_name[IEEE80211_S_MAX] = { 85117811Ssam "INIT", /* IEEE80211_S_INIT */ 86117811Ssam "SCAN", /* IEEE80211_S_SCAN */ 87117811Ssam "AUTH", /* IEEE80211_S_AUTH */ 88117811Ssam "ASSOC", /* IEEE80211_S_ASSOC */ 89172058Ssam "CAC", /* IEEE80211_S_CAC */ 90172058Ssam "RUN", /* IEEE80211_S_RUN */ 91172058Ssam "CSA", /* IEEE80211_S_CSA */ 92172058Ssam "SLEEP", /* IEEE80211_S_SLEEP */ 93117811Ssam}; 94138568Ssamconst char *ieee80211_wme_acnames[] = { 95138568Ssam "WME_AC_BE", 96138568Ssam "WME_AC_BK", 97138568Ssam "WME_AC_VI", 98138568Ssam "WME_AC_VO", 99138568Ssam "WME_UPSD", 100138568Ssam}; 101116742Ssam 102191746Sthompsastatic void beacon_miss(void *, int); 103191746Sthompsastatic void beacon_swmiss(void *, int); 104178354Ssamstatic void parent_updown(void *, int); 105191746Sthompsastatic void update_mcast(void *, int); 106191746Sthompsastatic void update_promisc(void *, int); 107191746Sthompsastatic void update_channel(void *, int); 108233452Sadrianstatic void update_chw(void *, int); 109191746Sthompsastatic void ieee80211_newstate_cb(void *, int); 110117811Ssam 111178354Ssamstatic int 112178354Ssamnull_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 113178354Ssam const struct ieee80211_bpf_params *params) 114172211Ssam{ 115178354Ssam struct ifnet *ifp = ni->ni_ic->ic_ifp; 116178354Ssam 117178354Ssam if_printf(ifp, "missing ic_raw_xmit callback, drop frame\n"); 118178354Ssam m_freem(m); 119178354Ssam return ENETDOWN; 120172211Ssam} 121172211Ssam 122116742Ssamvoid 123138568Ssamieee80211_proto_attach(struct ieee80211com *ic) 124116742Ssam{ 125138568Ssam struct ifnet *ifp = ic->ic_ifp; 126116742Ssam 127178354Ssam /* override the 802.3 setting */ 128178354Ssam ifp->if_hdrlen = ic->ic_headroom 129178354Ssam + sizeof(struct ieee80211_qosframe_addr4) 130178354Ssam + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN 131178354Ssam + IEEE80211_WEP_EXTIVLEN; 132178354Ssam /* XXX no way to recalculate on ifdetach */ 133178354Ssam if (ALIGN(ifp->if_hdrlen) > max_linkhdr) { 134178354Ssam /* XXX sanity check... */ 135178354Ssam max_linkhdr = ALIGN(ifp->if_hdrlen); 136178354Ssam max_hdr = max_linkhdr + max_protohdr; 137178354Ssam max_datalen = MHLEN - max_hdr; 138178354Ssam } 139127648Ssam ic->ic_protmode = IEEE80211_PROT_CTSONLY; 140116742Ssam 141178354Ssam TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ifp); 142191746Sthompsa TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic); 143191746Sthompsa TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic); 144191746Sthompsa TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic); 145191746Sthompsa TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, ic); 146233452Sadrian TASK_INIT(&ic->ic_chw_task, 0, update_chw, ic); 147178354Ssam 148138568Ssam ic->ic_wme.wme_hipri_switch_hysteresis = 149138568Ssam AGGRESSIVE_MODE_SWITCH_HYSTERESIS; 150138568Ssam 151116742Ssam /* initialize management frame handlers */ 152116742Ssam ic->ic_send_mgmt = ieee80211_send_mgmt; 153178354Ssam ic->ic_raw_xmit = null_raw_xmit; 154178354Ssam 155178354Ssam ieee80211_adhoc_attach(ic); 156178354Ssam ieee80211_sta_attach(ic); 157178354Ssam ieee80211_wds_attach(ic); 158178354Ssam ieee80211_hostap_attach(ic); 159195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 160195618Srpaulo ieee80211_mesh_attach(ic); 161195618Srpaulo#endif 162178354Ssam ieee80211_monitor_attach(ic); 163116742Ssam} 164116742Ssam 165116742Ssamvoid 166138568Ssamieee80211_proto_detach(struct ieee80211com *ic) 167116742Ssam{ 168178354Ssam ieee80211_monitor_detach(ic); 169195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 170195618Srpaulo ieee80211_mesh_detach(ic); 171195618Srpaulo#endif 172178354Ssam ieee80211_hostap_detach(ic); 173178354Ssam ieee80211_wds_detach(ic); 174178354Ssam ieee80211_adhoc_detach(ic); 175178354Ssam ieee80211_sta_detach(ic); 176178354Ssam} 177116742Ssam 178178354Ssamstatic void 179178354Ssamnull_update_beacon(struct ieee80211vap *vap, int item) 180178354Ssam{ 181178354Ssam} 182178354Ssam 183178354Ssamvoid 184178354Ssamieee80211_proto_vattach(struct ieee80211vap *vap) 185178354Ssam{ 186178354Ssam struct ieee80211com *ic = vap->iv_ic; 187178354Ssam struct ifnet *ifp = vap->iv_ifp; 188178354Ssam int i; 189178354Ssam 190178354Ssam /* override the 802.3 setting */ 191178354Ssam ifp->if_hdrlen = ic->ic_ifp->if_hdrlen; 192178354Ssam 193178354Ssam vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT; 194178354Ssam vap->iv_fragthreshold = IEEE80211_FRAG_DEFAULT; 195178354Ssam vap->iv_bmiss_max = IEEE80211_BMISS_MAX; 196225913Sadrian callout_init_mtx(&vap->iv_swbmiss, IEEE80211_LOCK_OBJ(ic), 0); 197178354Ssam callout_init(&vap->iv_mgtsend, CALLOUT_MPSAFE); 198191746Sthompsa TASK_INIT(&vap->iv_nstate_task, 0, ieee80211_newstate_cb, vap); 199191746Sthompsa TASK_INIT(&vap->iv_swbmiss_task, 0, beacon_swmiss, vap); 200138568Ssam /* 201178354Ssam * Install default tx rate handling: no fixed rate, lowest 202178354Ssam * supported rate for mgmt and multicast frames. Default 203178354Ssam * max retry count. These settings can be changed by the 204178354Ssam * driver and/or user applications. 205178354Ssam */ 206188779Ssam for (i = IEEE80211_MODE_11A; i < IEEE80211_MODE_MAX; i++) { 207178354Ssam const struct ieee80211_rateset *rs = &ic->ic_sup_rates[i]; 208178354Ssam 209178354Ssam vap->iv_txparms[i].ucastrate = IEEE80211_FIXED_RATE_NONE; 210218916Sadrian 211218916Sadrian /* 212218916Sadrian * Setting the management rate to MCS 0 assumes that the 213218916Sadrian * BSS Basic rate set is empty and the BSS Basic MCS set 214218916Sadrian * is not. 215218916Sadrian * 216218916Sadrian * Since we're not checking this, default to the lowest 217218916Sadrian * defined rate for this mode. 218218916Sadrian * 219218916Sadrian * At least one 11n AP (DLINK DIR-825) is reported to drop 220218916Sadrian * some MCS management traffic (eg BA response frames.) 221218916Sadrian * 222218916Sadrian * See also: 9.6.0 of the 802.11n-2009 specification. 223218916Sadrian */ 224218916Sadrian#ifdef NOTYET 225188779Ssam if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) { 226188779Ssam vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS; 227188779Ssam vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS; 228188779Ssam } else { 229188779Ssam vap->iv_txparms[i].mgmtrate = 230188779Ssam rs->rs_rates[0] & IEEE80211_RATE_VAL; 231188779Ssam vap->iv_txparms[i].mcastrate = 232188779Ssam rs->rs_rates[0] & IEEE80211_RATE_VAL; 233188779Ssam } 234218916Sadrian#endif 235218916Sadrian vap->iv_txparms[i].mgmtrate = rs->rs_rates[0] & IEEE80211_RATE_VAL; 236218916Sadrian vap->iv_txparms[i].mcastrate = rs->rs_rates[0] & IEEE80211_RATE_VAL; 237178354Ssam vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT; 238178354Ssam } 239178354Ssam vap->iv_roaming = IEEE80211_ROAMING_AUTO; 240178354Ssam 241178354Ssam vap->iv_update_beacon = null_update_beacon; 242178354Ssam vap->iv_deliver_data = ieee80211_deliver_data; 243178354Ssam 244178354Ssam /* attach support for operating mode */ 245178354Ssam ic->ic_vattach[vap->iv_opmode](vap); 246178354Ssam} 247178354Ssam 248178354Ssamvoid 249178354Ssamieee80211_proto_vdetach(struct ieee80211vap *vap) 250178354Ssam{ 251178354Ssam#define FREEAPPIE(ie) do { \ 252178354Ssam if (ie != NULL) \ 253186302Ssam free(ie, M_80211_NODE_IE); \ 254178354Ssam} while (0) 255178354Ssam /* 256178354Ssam * Detach operating mode module. 257178354Ssam */ 258178354Ssam if (vap->iv_opdetach != NULL) 259178354Ssam vap->iv_opdetach(vap); 260178354Ssam /* 261138568Ssam * This should not be needed as we detach when reseting 262138568Ssam * the state but be conservative here since the 263138568Ssam * authenticator may do things like spawn kernel threads. 264138568Ssam */ 265178354Ssam if (vap->iv_auth->ia_detach != NULL) 266178354Ssam vap->iv_auth->ia_detach(vap); 267138568Ssam /* 268138568Ssam * Detach any ACL'ator. 269138568Ssam */ 270178354Ssam if (vap->iv_acl != NULL) 271178354Ssam vap->iv_acl->iac_detach(vap); 272178354Ssam 273178354Ssam FREEAPPIE(vap->iv_appie_beacon); 274178354Ssam FREEAPPIE(vap->iv_appie_probereq); 275178354Ssam FREEAPPIE(vap->iv_appie_proberesp); 276178354Ssam FREEAPPIE(vap->iv_appie_assocreq); 277178354Ssam FREEAPPIE(vap->iv_appie_assocresp); 278178354Ssam FREEAPPIE(vap->iv_appie_wpa); 279178354Ssam#undef FREEAPPIE 280116742Ssam} 281116742Ssam 282138568Ssam/* 283138568Ssam * Simple-minded authenticator module support. 284138568Ssam */ 285138568Ssam 286138568Ssam#define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1) 287138568Ssam/* XXX well-known names */ 288138568Ssamstatic const char *auth_modnames[IEEE80211_AUTH_MAX] = { 289138568Ssam "wlan_internal", /* IEEE80211_AUTH_NONE */ 290138568Ssam "wlan_internal", /* IEEE80211_AUTH_OPEN */ 291138568Ssam "wlan_internal", /* IEEE80211_AUTH_SHARED */ 292138568Ssam "wlan_xauth", /* IEEE80211_AUTH_8021X */ 293138568Ssam "wlan_internal", /* IEEE80211_AUTH_AUTO */ 294138568Ssam "wlan_xauth", /* IEEE80211_AUTH_WPA */ 295138568Ssam}; 296138568Ssamstatic const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX]; 297138568Ssam 298138568Ssamstatic const struct ieee80211_authenticator auth_internal = { 299138568Ssam .ia_name = "wlan_internal", 300138568Ssam .ia_attach = NULL, 301138568Ssam .ia_detach = NULL, 302138568Ssam .ia_node_join = NULL, 303138568Ssam .ia_node_leave = NULL, 304138568Ssam}; 305138568Ssam 306138568Ssam/* 307138568Ssam * Setup internal authenticators once; they are never unregistered. 308138568Ssam */ 309138568Ssamstatic void 310138568Ssamieee80211_auth_setup(void) 311138568Ssam{ 312138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal); 313138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal); 314138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal); 315138568Ssam} 316138568SsamSYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL); 317138568Ssam 318138568Ssamconst struct ieee80211_authenticator * 319138568Ssamieee80211_authenticator_get(int auth) 320138568Ssam{ 321138568Ssam if (auth >= IEEE80211_AUTH_MAX) 322138568Ssam return NULL; 323138568Ssam if (authenticators[auth] == NULL) 324138568Ssam ieee80211_load_module(auth_modnames[auth]); 325138568Ssam return authenticators[auth]; 326138568Ssam} 327138568Ssam 328116742Ssamvoid 329138568Ssamieee80211_authenticator_register(int type, 330138568Ssam const struct ieee80211_authenticator *auth) 331116742Ssam{ 332138568Ssam if (type >= IEEE80211_AUTH_MAX) 333138568Ssam return; 334138568Ssam authenticators[type] = auth; 335138568Ssam} 336138568Ssam 337138568Ssamvoid 338138568Ssamieee80211_authenticator_unregister(int type) 339138568Ssam{ 340138568Ssam 341138568Ssam if (type >= IEEE80211_AUTH_MAX) 342138568Ssam return; 343138568Ssam authenticators[type] = NULL; 344138568Ssam} 345138568Ssam 346138568Ssam/* 347138568Ssam * Very simple-minded ACL module support. 348138568Ssam */ 349138568Ssam/* XXX just one for now */ 350138568Ssamstatic const struct ieee80211_aclator *acl = NULL; 351138568Ssam 352138568Ssamvoid 353138568Ssamieee80211_aclator_register(const struct ieee80211_aclator *iac) 354138568Ssam{ 355138568Ssam printf("wlan: %s acl policy registered\n", iac->iac_name); 356138568Ssam acl = iac; 357138568Ssam} 358138568Ssam 359138568Ssamvoid 360138568Ssamieee80211_aclator_unregister(const struct ieee80211_aclator *iac) 361138568Ssam{ 362138568Ssam if (acl == iac) 363138568Ssam acl = NULL; 364138568Ssam printf("wlan: %s acl policy unregistered\n", iac->iac_name); 365138568Ssam} 366138568Ssam 367138568Ssamconst struct ieee80211_aclator * 368138568Ssamieee80211_aclator_get(const char *name) 369138568Ssam{ 370138568Ssam if (acl == NULL) 371138568Ssam ieee80211_load_module("wlan_acl"); 372138568Ssam return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL; 373138568Ssam} 374138568Ssam 375138568Ssamvoid 376170530Ssamieee80211_print_essid(const uint8_t *essid, int len) 377138568Ssam{ 378170530Ssam const uint8_t *p; 379116742Ssam int i; 380116742Ssam 381116742Ssam if (len > IEEE80211_NWID_LEN) 382116742Ssam len = IEEE80211_NWID_LEN; 383116742Ssam /* determine printable or not */ 384116742Ssam for (i = 0, p = essid; i < len; i++, p++) { 385116742Ssam if (*p < ' ' || *p > 0x7e) 386116742Ssam break; 387116742Ssam } 388116742Ssam if (i == len) { 389116742Ssam printf("\""); 390116742Ssam for (i = 0, p = essid; i < len; i++, p++) 391116742Ssam printf("%c", *p); 392116742Ssam printf("\""); 393116742Ssam } else { 394116742Ssam printf("0x"); 395116742Ssam for (i = 0, p = essid; i < len; i++, p++) 396116742Ssam printf("%02x", *p); 397116742Ssam } 398116742Ssam} 399116742Ssam 400116742Ssamvoid 401170530Ssamieee80211_dump_pkt(struct ieee80211com *ic, 402170530Ssam const uint8_t *buf, int len, int rate, int rssi) 403116742Ssam{ 404138568Ssam const struct ieee80211_frame *wh; 405116742Ssam int i; 406116742Ssam 407138568Ssam wh = (const struct ieee80211_frame *)buf; 408116742Ssam switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) { 409116742Ssam case IEEE80211_FC1_DIR_NODS: 410116742Ssam printf("NODS %s", ether_sprintf(wh->i_addr2)); 411116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 412116742Ssam printf("(%s)", ether_sprintf(wh->i_addr3)); 413116742Ssam break; 414116742Ssam case IEEE80211_FC1_DIR_TODS: 415116742Ssam printf("TODS %s", ether_sprintf(wh->i_addr2)); 416116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 417116742Ssam printf("(%s)", ether_sprintf(wh->i_addr1)); 418116742Ssam break; 419116742Ssam case IEEE80211_FC1_DIR_FROMDS: 420116742Ssam printf("FRDS %s", ether_sprintf(wh->i_addr3)); 421116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 422116742Ssam printf("(%s)", ether_sprintf(wh->i_addr2)); 423116742Ssam break; 424116742Ssam case IEEE80211_FC1_DIR_DSTODS: 425170530Ssam printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1])); 426116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 427116742Ssam printf("(%s", ether_sprintf(wh->i_addr2)); 428116742Ssam printf("->%s)", ether_sprintf(wh->i_addr1)); 429116742Ssam break; 430116742Ssam } 431116742Ssam switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 432116742Ssam case IEEE80211_FC0_TYPE_DATA: 433116742Ssam printf(" data"); 434116742Ssam break; 435116742Ssam case IEEE80211_FC0_TYPE_MGT: 436116742Ssam printf(" %s", ieee80211_mgt_subtype_name[ 437116742Ssam (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 438116742Ssam >> IEEE80211_FC0_SUBTYPE_SHIFT]); 439116742Ssam break; 440116742Ssam default: 441116742Ssam printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK); 442116742Ssam break; 443116742Ssam } 444170530Ssam if (IEEE80211_QOS_HAS_SEQ(wh)) { 445170530Ssam const struct ieee80211_qosframe *qwh = 446170530Ssam (const struct ieee80211_qosframe *)buf; 447170530Ssam printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID, 448170530Ssam qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : ""); 449170530Ssam } 450138568Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 451170530Ssam int off; 452170530Ssam 453170530Ssam off = ieee80211_anyhdrspace(ic, wh); 454170530Ssam printf(" WEP [IV %.02x %.02x %.02x", 455170530Ssam buf[off+0], buf[off+1], buf[off+2]); 456170530Ssam if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV) 457170530Ssam printf(" %.02x %.02x %.02x", 458170530Ssam buf[off+4], buf[off+5], buf[off+6]); 459170530Ssam printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6); 460138568Ssam } 461116742Ssam if (rate >= 0) 462116742Ssam printf(" %dM", rate / 2); 463116742Ssam if (rssi >= 0) 464116742Ssam printf(" +%d", rssi); 465116742Ssam printf("\n"); 466116742Ssam if (len > 0) { 467116742Ssam for (i = 0; i < len; i++) { 468116742Ssam if ((i & 1) == 0) 469116742Ssam printf(" "); 470116742Ssam printf("%02x", buf[i]); 471116742Ssam } 472116742Ssam printf("\n"); 473116742Ssam } 474116742Ssam} 475116742Ssam 476165887Ssamstatic __inline int 477165887Ssamfindrix(const struct ieee80211_rateset *rs, int r) 478165887Ssam{ 479165887Ssam int i; 480165887Ssam 481165887Ssam for (i = 0; i < rs->rs_nrates; i++) 482165887Ssam if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r) 483165887Ssam return i; 484165887Ssam return -1; 485165887Ssam} 486165887Ssam 487116742Ssamint 488167442Ssamieee80211_fix_rate(struct ieee80211_node *ni, 489167442Ssam struct ieee80211_rateset *nrs, int flags) 490116742Ssam{ 491116742Ssam#define RV(v) ((v) & IEEE80211_RATE_VAL) 492178354Ssam struct ieee80211vap *vap = ni->ni_vap; 493148299Ssam struct ieee80211com *ic = ni->ni_ic; 494165887Ssam int i, j, rix, error; 495178354Ssam int okrate, badrate, fixedrate, ucastrate; 496165569Ssam const struct ieee80211_rateset *srs; 497170530Ssam uint8_t r; 498116742Ssam 499116742Ssam error = 0; 500170530Ssam okrate = badrate = 0; 501178354Ssam ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate; 502178354Ssam if (ucastrate != IEEE80211_FIXED_RATE_NONE) { 503178354Ssam /* 504178354Ssam * Workaround awkwardness with fixed rate. We are called 505178354Ssam * to check both the legacy rate set and the HT rate set 506178354Ssam * but we must apply any legacy fixed rate check only to the 507178354Ssam * legacy rate set and vice versa. We cannot tell what type 508178354Ssam * of rate set we've been given (legacy or HT) but we can 509178354Ssam * distinguish the fixed rate type (MCS have 0x80 set). 510178354Ssam * So to deal with this the caller communicates whether to 511178354Ssam * check MCS or legacy rate using the flags and we use the 512178354Ssam * type of any fixed rate to avoid applying an MCS to a 513178354Ssam * legacy rate and vice versa. 514178354Ssam */ 515178354Ssam if (ucastrate & 0x80) { 516178354Ssam if (flags & IEEE80211_F_DOFRATE) 517178354Ssam flags &= ~IEEE80211_F_DOFRATE; 518178354Ssam } else if ((ucastrate & 0x80) == 0) { 519178354Ssam if (flags & IEEE80211_F_DOFMCS) 520178354Ssam flags &= ~IEEE80211_F_DOFMCS; 521178354Ssam } 522178354Ssam /* NB: required to make MCS match below work */ 523178354Ssam ucastrate &= IEEE80211_RATE_VAL; 524178354Ssam } 525170530Ssam fixedrate = IEEE80211_FIXED_RATE_NONE; 526178354Ssam /* 527178354Ssam * XXX we are called to process both MCS and legacy rates; 528178354Ssam * we must use the appropriate basic rate set or chaos will 529178354Ssam * ensue; for now callers that want MCS must supply 530178354Ssam * IEEE80211_F_DOBRS; at some point we'll need to split this 531178354Ssam * function so there are two variants, one for MCS and one 532178354Ssam * for legacy rates. 533178354Ssam */ 534178354Ssam if (flags & IEEE80211_F_DOBRS) 535178354Ssam srs = (const struct ieee80211_rateset *) 536178354Ssam ieee80211_get_suphtrates(ic, ni->ni_chan); 537178354Ssam else 538178354Ssam srs = ieee80211_get_suprates(ic, ni->ni_chan); 539120482Ssam for (i = 0; i < nrs->rs_nrates; ) { 540116742Ssam if (flags & IEEE80211_F_DOSORT) { 541116742Ssam /* 542116742Ssam * Sort rates. 543116742Ssam */ 544116742Ssam for (j = i + 1; j < nrs->rs_nrates; j++) { 545116742Ssam if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) { 546116742Ssam r = nrs->rs_rates[i]; 547116742Ssam nrs->rs_rates[i] = nrs->rs_rates[j]; 548116742Ssam nrs->rs_rates[j] = r; 549116742Ssam } 550116742Ssam } 551116742Ssam } 552116742Ssam r = nrs->rs_rates[i] & IEEE80211_RATE_VAL; 553116742Ssam badrate = r; 554165887Ssam /* 555170530Ssam * Check for fixed rate. 556170530Ssam */ 557178354Ssam if (r == ucastrate) 558170530Ssam fixedrate = r; 559170530Ssam /* 560165887Ssam * Check against supported rates. 561165887Ssam */ 562165887Ssam rix = findrix(srs, r); 563116742Ssam if (flags & IEEE80211_F_DONEGO) { 564165887Ssam if (rix < 0) { 565120482Ssam /* 566120482Ssam * A rate in the node's rate set is not 567120482Ssam * supported. If this is a basic rate and we 568165887Ssam * are operating as a STA then this is an error. 569120482Ssam * Otherwise we just discard/ignore the rate. 570120482Ssam */ 571165887Ssam if ((flags & IEEE80211_F_JOIN) && 572120482Ssam (nrs->rs_rates[i] & IEEE80211_RATE_BASIC)) 573116742Ssam error++; 574165887Ssam } else if ((flags & IEEE80211_F_JOIN) == 0) { 575165887Ssam /* 576165887Ssam * Overwrite with the supported rate 577165887Ssam * value so any basic rate bit is set. 578165887Ssam */ 579165887Ssam nrs->rs_rates[i] = srs->rs_rates[rix]; 580116742Ssam } 581116742Ssam } 582165887Ssam if ((flags & IEEE80211_F_DODEL) && rix < 0) { 583116742Ssam /* 584116742Ssam * Delete unacceptable rates. 585116742Ssam */ 586165887Ssam nrs->rs_nrates--; 587165887Ssam for (j = i; j < nrs->rs_nrates; j++) 588165887Ssam nrs->rs_rates[j] = nrs->rs_rates[j + 1]; 589165887Ssam nrs->rs_rates[j] = 0; 590165887Ssam continue; 591116742Ssam } 592165887Ssam if (rix >= 0) 593116742Ssam okrate = nrs->rs_rates[i]; 594116742Ssam i++; 595116742Ssam } 596138568Ssam if (okrate == 0 || error != 0 || 597178354Ssam ((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) && 598178354Ssam fixedrate != ucastrate)) { 599178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni, 600178354Ssam "%s: flags 0x%x okrate %d error %d fixedrate 0x%x " 601178354Ssam "ucastrate %x\n", __func__, fixedrate, ucastrate, flags); 602116742Ssam return badrate | IEEE80211_RATE_BASIC; 603178354Ssam } else 604116742Ssam return RV(okrate); 605116742Ssam#undef RV 606116742Ssam} 607116742Ssam 608138568Ssam/* 609138568Ssam * Reset 11g-related state. 610138568Ssam */ 611138568Ssamvoid 612138568Ssamieee80211_reset_erp(struct ieee80211com *ic) 613138568Ssam{ 614138568Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 615138568Ssam ic->ic_nonerpsta = 0; 616138568Ssam ic->ic_longslotsta = 0; 617138568Ssam /* 618138568Ssam * Short slot time is enabled only when operating in 11g 619138568Ssam * and not in an IBSS. We must also honor whether or not 620138568Ssam * the driver is capable of doing it. 621138568Ssam */ 622138568Ssam ieee80211_set_shortslottime(ic, 623170530Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 624170530Ssam IEEE80211_IS_CHAN_HT(ic->ic_curchan) || 625170530Ssam (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 626138568Ssam ic->ic_opmode == IEEE80211_M_HOSTAP && 627138568Ssam (ic->ic_caps & IEEE80211_C_SHSLOT))); 628138568Ssam /* 629138568Ssam * Set short preamble and ERP barker-preamble flags. 630138568Ssam */ 631170530Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 632138568Ssam (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) { 633138568Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 634138568Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 635138568Ssam } else { 636138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 637138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 638138568Ssam } 639138568Ssam} 640138568Ssam 641138568Ssam/* 642138568Ssam * Set the short slot time state and notify the driver. 643138568Ssam */ 644138568Ssamvoid 645138568Ssamieee80211_set_shortslottime(struct ieee80211com *ic, int onoff) 646138568Ssam{ 647138568Ssam if (onoff) 648138568Ssam ic->ic_flags |= IEEE80211_F_SHSLOT; 649138568Ssam else 650138568Ssam ic->ic_flags &= ~IEEE80211_F_SHSLOT; 651138568Ssam /* notify driver */ 652138568Ssam if (ic->ic_updateslot != NULL) 653138568Ssam ic->ic_updateslot(ic->ic_ifp); 654138568Ssam} 655138568Ssam 656138568Ssam/* 657138568Ssam * Check if the specified rate set supports ERP. 658138568Ssam * NB: the rate set is assumed to be sorted. 659138568Ssam */ 660138568Ssamint 661178354Ssamieee80211_iserp_rateset(const struct ieee80211_rateset *rs) 662138568Ssam{ 663138568Ssam static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 }; 664138568Ssam int i, j; 665138568Ssam 666254315Srpaulo if (rs->rs_nrates < nitems(rates)) 667138568Ssam return 0; 668254315Srpaulo for (i = 0; i < nitems(rates); i++) { 669138568Ssam for (j = 0; j < rs->rs_nrates; j++) { 670138568Ssam int r = rs->rs_rates[j] & IEEE80211_RATE_VAL; 671138568Ssam if (rates[i] == r) 672138568Ssam goto next; 673138568Ssam if (r > rates[i]) 674138568Ssam return 0; 675138568Ssam } 676138568Ssam return 0; 677138568Ssam next: 678138568Ssam ; 679138568Ssam } 680138568Ssam return 1; 681138568Ssam} 682138568Ssam 683138568Ssam/* 684178354Ssam * Mark the basic rates for the rate table based on the 685138568Ssam * operating mode. For real 11g we mark all the 11b rates 686138568Ssam * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 687138568Ssam * 11b rates. There's also a pseudo 11a-mode used to mark only 688138568Ssam * the basic OFDM rates. 689138568Ssam */ 690178354Ssamstatic void 691178354Ssamsetbasicrates(struct ieee80211_rateset *rs, 692178354Ssam enum ieee80211_phymode mode, int add) 693138568Ssam{ 694170530Ssam static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = { 695188780Ssam [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } }, 696188780Ssam [IEEE80211_MODE_11B] = { 2, { 2, 4 } }, 697188780Ssam /* NB: mixed b/g */ 698188780Ssam [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } }, 699188780Ssam [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } }, 700188780Ssam [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } }, 701188780Ssam [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } }, 702188782Ssam [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } }, 703188782Ssam [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } }, 704188780Ssam [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } }, 705188780Ssam /* NB: mixed b/g */ 706188780Ssam [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } }, 707138568Ssam }; 708138568Ssam int i, j; 709138568Ssam 710138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 711178354Ssam if (!add) 712178354Ssam rs->rs_rates[i] &= IEEE80211_RATE_VAL; 713138568Ssam for (j = 0; j < basic[mode].rs_nrates; j++) 714138568Ssam if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 715138568Ssam rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 716138568Ssam break; 717138568Ssam } 718138568Ssam } 719138568Ssam} 720138568Ssam 721138568Ssam/* 722178354Ssam * Set the basic rates in a rate set. 723138568Ssam */ 724178354Ssamvoid 725178354Ssamieee80211_setbasicrates(struct ieee80211_rateset *rs, 726178354Ssam enum ieee80211_phymode mode) 727178354Ssam{ 728178354Ssam setbasicrates(rs, mode, 0); 729178354Ssam} 730178354Ssam 731178354Ssam/* 732178354Ssam * Add basic rates to a rate set. 733178354Ssam */ 734178354Ssamvoid 735178354Ssamieee80211_addbasicrates(struct ieee80211_rateset *rs, 736178354Ssam enum ieee80211_phymode mode) 737178354Ssam{ 738178354Ssam setbasicrates(rs, mode, 1); 739178354Ssam} 740178354Ssam 741178354Ssam/* 742178354Ssam * WME protocol support. 743178354Ssam * 744178354Ssam * The default 11a/b/g/n parameters come from the WiFi Alliance WMM 745178354Ssam * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n 746178354Ssam * Draft 2.0 Test Plan (Appendix D). 747178354Ssam * 748178354Ssam * Static/Dynamic Turbo mode settings come from Atheros. 749178354Ssam */ 750138568Ssamtypedef struct phyParamType { 751178354Ssam uint8_t aifsn; 752178354Ssam uint8_t logcwmin; 753178354Ssam uint8_t logcwmax; 754178354Ssam uint16_t txopLimit; 755178354Ssam uint8_t acm; 756138568Ssam} paramType; 757138568Ssam 758138568Ssamstatic const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = { 759188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 }, 760188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 }, 761188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 }, 762188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 }, 763188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 }, 764188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 }, 765188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 }, 766188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 }, 767188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 }, 768188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 }, 769188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 }, 770188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 }, 771138568Ssam}; 772138568Ssamstatic const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = { 773188780Ssam [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 }, 774188780Ssam [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 }, 775188780Ssam [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 }, 776188780Ssam [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 }, 777188780Ssam [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 }, 778188780Ssam [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 }, 779188780Ssam [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 }, 780188780Ssam [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 }, 781188782Ssam [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 }, 782188782Ssam [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 }, 783188780Ssam [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 }, 784188780Ssam [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 }, 785138568Ssam}; 786138568Ssamstatic const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = { 787188780Ssam [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 }, 788188780Ssam [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 }, 789188780Ssam [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 }, 790188780Ssam [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 }, 791188780Ssam [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 }, 792188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 }, 793188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 }, 794188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 }, 795188782Ssam [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 }, 796188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 }, 797188780Ssam [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 }, 798188780Ssam [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 }, 799138568Ssam}; 800138568Ssamstatic const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = { 801188780Ssam [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 }, 802188780Ssam [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 }, 803188780Ssam [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 }, 804188780Ssam [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 }, 805188780Ssam [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 }, 806188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 807188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 808188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 809188782Ssam [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 }, 810188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 }, 811188780Ssam [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 }, 812188780Ssam [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 }, 813138568Ssam}; 814138568Ssam 815138568Ssamstatic const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = { 816188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 }, 817188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 }, 818188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 }, 819188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 }, 820188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 }, 821188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 }, 822188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 }, 823188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 }, 824188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 }, 825188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 }, 826188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 }, 827188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 }, 828138568Ssam}; 829138568Ssamstatic const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = { 830188780Ssam [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 }, 831188780Ssam [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 }, 832188780Ssam [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 }, 833188780Ssam [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 }, 834188780Ssam [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 }, 835188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 }, 836188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 }, 837188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 }, 838188782Ssam [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 }, 839188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 }, 840188780Ssam [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 }, 841188780Ssam [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 }, 842138568Ssam}; 843138568Ssamstatic const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = { 844188780Ssam [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 }, 845188780Ssam [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 }, 846188780Ssam [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 }, 847188780Ssam [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 }, 848188780Ssam [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 }, 849188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 850188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 851188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 852188782Ssam [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 }, 853188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 }, 854188780Ssam [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 }, 855188780Ssam [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 }, 856138568Ssam}; 857138568Ssam 858178354Ssamstatic void 859188863Ssam_setifsparams(struct wmeParams *wmep, const paramType *phy) 860188863Ssam{ 861188863Ssam wmep->wmep_aifsn = phy->aifsn; 862188863Ssam wmep->wmep_logcwmin = phy->logcwmin; 863188863Ssam wmep->wmep_logcwmax = phy->logcwmax; 864188863Ssam wmep->wmep_txopLimit = phy->txopLimit; 865188863Ssam} 866188863Ssam 867188863Ssamstatic void 868188863Ssamsetwmeparams(struct ieee80211vap *vap, const char *type, int ac, 869188863Ssam struct wmeParams *wmep, const paramType *phy) 870188863Ssam{ 871188863Ssam wmep->wmep_acm = phy->acm; 872188863Ssam _setifsparams(wmep, phy); 873188863Ssam 874188863Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 875188863Ssam "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n", 876188863Ssam ieee80211_wme_acnames[ac], type, 877188863Ssam wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin, 878188863Ssam wmep->wmep_logcwmax, wmep->wmep_txopLimit); 879188863Ssam} 880188863Ssam 881188863Ssamstatic void 882178354Ssamieee80211_wme_initparams_locked(struct ieee80211vap *vap) 883138568Ssam{ 884178354Ssam struct ieee80211com *ic = vap->iv_ic; 885138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 886138568Ssam const paramType *pPhyParam, *pBssPhyParam; 887138568Ssam struct wmeParams *wmep; 888170530Ssam enum ieee80211_phymode mode; 889138568Ssam int i; 890138568Ssam 891178354Ssam IEEE80211_LOCK_ASSERT(ic); 892178354Ssam 893188864Ssam if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1) 894138568Ssam return; 895138568Ssam 896170530Ssam /* 897219961Sadrian * Clear the wme cap_info field so a qoscount from a previous 898219961Sadrian * vap doesn't confuse later code which only parses the beacon 899219961Sadrian * field and updates hardware when said field changes. 900219961Sadrian * Otherwise the hardware is programmed with defaults, not what 901219961Sadrian * the beacon actually announces. 902219961Sadrian */ 903219961Sadrian wme->wme_wmeChanParams.cap_info = 0; 904219961Sadrian 905219961Sadrian /* 906170530Ssam * Select mode; we can be called early in which case we 907170530Ssam * always use auto mode. We know we'll be called when 908170530Ssam * entering the RUN state with bsschan setup properly 909170530Ssam * so state will eventually get set correctly 910170530Ssam */ 911170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 912170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 913170530Ssam else 914170530Ssam mode = IEEE80211_MODE_AUTO; 915138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 916138568Ssam switch (i) { 917138568Ssam case WME_AC_BK: 918170530Ssam pPhyParam = &phyParamForAC_BK[mode]; 919170530Ssam pBssPhyParam = &phyParamForAC_BK[mode]; 920138568Ssam break; 921138568Ssam case WME_AC_VI: 922170530Ssam pPhyParam = &phyParamForAC_VI[mode]; 923170530Ssam pBssPhyParam = &bssPhyParamForAC_VI[mode]; 924138568Ssam break; 925138568Ssam case WME_AC_VO: 926170530Ssam pPhyParam = &phyParamForAC_VO[mode]; 927170530Ssam pBssPhyParam = &bssPhyParamForAC_VO[mode]; 928138568Ssam break; 929138568Ssam case WME_AC_BE: 930138568Ssam default: 931170530Ssam pPhyParam = &phyParamForAC_BE[mode]; 932170530Ssam pBssPhyParam = &bssPhyParamForAC_BE[mode]; 933138568Ssam break; 934138568Ssam } 935138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 936138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 937188863Ssam setwmeparams(vap, "chan", i, wmep, pPhyParam); 938138568Ssam } else { 939188863Ssam setwmeparams(vap, "chan", i, wmep, pBssPhyParam); 940138568Ssam } 941138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 942188863Ssam setwmeparams(vap, "bss ", i, wmep, pBssPhyParam); 943138568Ssam } 944138568Ssam /* NB: check ic_bss to avoid NULL deref on initial attach */ 945178354Ssam if (vap->iv_bss != NULL) { 946138568Ssam /* 947138568Ssam * Calculate agressive mode switching threshold based 948138568Ssam * on beacon interval. This doesn't need locking since 949138568Ssam * we're only called before entering the RUN state at 950138568Ssam * which point we start sending beacon frames. 951138568Ssam */ 952138568Ssam wme->wme_hipri_switch_thresh = 953178354Ssam (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100; 954188864Ssam wme->wme_flags &= ~WME_F_AGGRMODE; 955178354Ssam ieee80211_wme_updateparams(vap); 956138568Ssam } 957138568Ssam} 958138568Ssam 959178354Ssamvoid 960178354Ssamieee80211_wme_initparams(struct ieee80211vap *vap) 961178354Ssam{ 962178354Ssam struct ieee80211com *ic = vap->iv_ic; 963178354Ssam 964178354Ssam IEEE80211_LOCK(ic); 965178354Ssam ieee80211_wme_initparams_locked(vap); 966178354Ssam IEEE80211_UNLOCK(ic); 967178354Ssam} 968178354Ssam 969138568Ssam/* 970138568Ssam * Update WME parameters for ourself and the BSS. 971138568Ssam */ 972138568Ssamvoid 973178354Ssamieee80211_wme_updateparams_locked(struct ieee80211vap *vap) 974138568Ssam{ 975188863Ssam static const paramType aggrParam[IEEE80211_MODE_MAX] = { 976188780Ssam [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 }, 977188780Ssam [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 }, 978188780Ssam [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 }, 979188780Ssam [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 }, 980188780Ssam [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 }, 981188780Ssam [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 }, 982188780Ssam [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 }, 983188780Ssam [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 }, 984188782Ssam [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 }, 985188782Ssam [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 }, 986188780Ssam [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 987188780Ssam [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 988138568Ssam }; 989178354Ssam struct ieee80211com *ic = vap->iv_ic; 990138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 991138568Ssam const struct wmeParams *wmep; 992138568Ssam struct wmeParams *chanp, *bssp; 993170530Ssam enum ieee80211_phymode mode; 994138568Ssam int i; 995244062Sadrian int do_aggrmode = 0; 996138568Ssam 997188863Ssam /* 998188863Ssam * Set up the channel access parameters for the physical 999188863Ssam * device. First populate the configured settings. 1000188863Ssam */ 1001138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 1002138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[i]; 1003138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 1004138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 1005138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1006138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1007138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1008138568Ssam 1009138568Ssam chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 1010138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 1011138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 1012138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1013138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1014138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1015138568Ssam } 1016138568Ssam 1017138568Ssam /* 1018170530Ssam * Select mode; we can be called early in which case we 1019170530Ssam * always use auto mode. We know we'll be called when 1020170530Ssam * entering the RUN state with bsschan setup properly 1021170530Ssam * so state will eventually get set correctly 1022170530Ssam */ 1023170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 1024170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 1025170530Ssam else 1026170530Ssam mode = IEEE80211_MODE_AUTO; 1027170530Ssam 1028170530Ssam /* 1029138568Ssam * This implements agressive mode as found in certain 1030138568Ssam * vendors' AP's. When there is significant high 1031138568Ssam * priority (VI/VO) traffic in the BSS throttle back BE 1032138568Ssam * traffic by using conservative parameters. Otherwise 1033138568Ssam * BE uses agressive params to optimize performance of 1034138568Ssam * legacy/non-QoS traffic. 1035138568Ssam */ 1036244062Sadrian 1037244062Sadrian /* Hostap? Only if aggressive mode is enabled */ 1038244062Sadrian if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1039244062Sadrian (wme->wme_flags & WME_F_AGGRMODE) != 0) 1040244062Sadrian do_aggrmode = 1; 1041244062Sadrian 1042244062Sadrian /* 1043244062Sadrian * Station? Only if we're in a non-QoS BSS. 1044244062Sadrian */ 1045244062Sadrian else if ((vap->iv_opmode == IEEE80211_M_STA && 1046244062Sadrian (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0)) 1047244062Sadrian do_aggrmode = 1; 1048244062Sadrian 1049244062Sadrian /* 1050244062Sadrian * IBSS? Only if we we have WME enabled. 1051244062Sadrian */ 1052244062Sadrian else if ((vap->iv_opmode == IEEE80211_M_IBSS) && 1053244062Sadrian (vap->iv_flags & IEEE80211_F_WME)) 1054244062Sadrian do_aggrmode = 1; 1055244062Sadrian 1056244062Sadrian /* 1057244062Sadrian * If WME is disabled on this VAP, default to aggressive mode 1058244062Sadrian * regardless of the configuration. 1059244062Sadrian */ 1060244062Sadrian if ((vap->iv_flags & IEEE80211_F_WME) == 0) 1061244062Sadrian do_aggrmode = 1; 1062244062Sadrian 1063244062Sadrian /* XXX WDS? */ 1064244062Sadrian 1065244062Sadrian /* XXX MBSS? */ 1066244062Sadrian 1067244062Sadrian if (do_aggrmode) { 1068138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1069138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1070138568Ssam 1071188863Ssam chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn; 1072138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 1073188863Ssam aggrParam[mode].logcwmin; 1074138568Ssam chanp->wmep_logcwmax = bssp->wmep_logcwmax = 1075188863Ssam aggrParam[mode].logcwmax; 1076138568Ssam chanp->wmep_txopLimit = bssp->wmep_txopLimit = 1077188863Ssam (vap->iv_flags & IEEE80211_F_BURST) ? 1078188863Ssam aggrParam[mode].txopLimit : 0; 1079178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1080188863Ssam "update %s (chan+bss) [acm %u aifsn %u logcwmin %u " 1081188863Ssam "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE], 1082188863Ssam chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin, 1083188863Ssam chanp->wmep_logcwmax, chanp->wmep_txopLimit); 1084138568Ssam } 1085244062Sadrian 1086244062Sadrian 1087244062Sadrian /* 1088244062Sadrian * Change the contention window based on the number of associated 1089244062Sadrian * stations. If the number of associated stations is 1 and 1090244062Sadrian * aggressive mode is enabled, lower the contention window even 1091244062Sadrian * further. 1092244062Sadrian */ 1093178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1094156524Ssam ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 1095188780Ssam static const uint8_t logCwMin[IEEE80211_MODE_MAX] = { 1096188780Ssam [IEEE80211_MODE_AUTO] = 3, 1097188780Ssam [IEEE80211_MODE_11A] = 3, 1098188780Ssam [IEEE80211_MODE_11B] = 4, 1099188780Ssam [IEEE80211_MODE_11G] = 3, 1100188780Ssam [IEEE80211_MODE_FH] = 4, 1101188780Ssam [IEEE80211_MODE_TURBO_A] = 3, 1102188780Ssam [IEEE80211_MODE_TURBO_G] = 3, 1103188780Ssam [IEEE80211_MODE_STURBO_A] = 3, 1104188782Ssam [IEEE80211_MODE_HALF] = 3, 1105188782Ssam [IEEE80211_MODE_QUARTER] = 3, 1106188780Ssam [IEEE80211_MODE_11NA] = 3, 1107188780Ssam [IEEE80211_MODE_11NG] = 3, 1108138568Ssam }; 1109138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1110138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1111138568Ssam 1112170530Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode]; 1113178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1114188863Ssam "update %s (chan+bss) logcwmin %u\n", 1115188863Ssam ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin); 1116244062Sadrian } 1117244062Sadrian 1118244062Sadrian /* 1119244062Sadrian * Arrange for the beacon update. 1120244062Sadrian * 1121244062Sadrian * XXX what about MBSS, WDS? 1122244062Sadrian */ 1123244062Sadrian if (vap->iv_opmode == IEEE80211_M_HOSTAP 1124244062Sadrian || vap->iv_opmode == IEEE80211_M_IBSS) { 1125138568Ssam /* 1126138568Ssam * Arrange for a beacon update and bump the parameter 1127138568Ssam * set number so associated stations load the new values. 1128138568Ssam */ 1129138568Ssam wme->wme_bssChanParams.cap_info = 1130138568Ssam (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 1131178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME); 1132138568Ssam } 1133138568Ssam 1134138568Ssam wme->wme_update(ic); 1135138568Ssam 1136178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1137188863Ssam "%s: WME params updated, cap_info 0x%x\n", __func__, 1138188863Ssam vap->iv_opmode == IEEE80211_M_STA ? 1139188863Ssam wme->wme_wmeChanParams.cap_info : 1140188863Ssam wme->wme_bssChanParams.cap_info); 1141138568Ssam} 1142138568Ssam 1143138568Ssamvoid 1144178354Ssamieee80211_wme_updateparams(struct ieee80211vap *vap) 1145138568Ssam{ 1146178354Ssam struct ieee80211com *ic = vap->iv_ic; 1147138568Ssam 1148138568Ssam if (ic->ic_caps & IEEE80211_C_WME) { 1149178354Ssam IEEE80211_LOCK(ic); 1150178354Ssam ieee80211_wme_updateparams_locked(vap); 1151178354Ssam IEEE80211_UNLOCK(ic); 1152138568Ssam } 1153138568Ssam} 1154138568Ssam 1155178354Ssamstatic void 1156178354Ssamparent_updown(void *arg, int npending) 1157178354Ssam{ 1158178354Ssam struct ifnet *parent = arg; 1159178354Ssam 1160178354Ssam parent->if_ioctl(parent, SIOCSIFFLAGS, NULL); 1161178354Ssam} 1162178354Ssam 1163191746Sthompsastatic void 1164191746Sthompsaupdate_mcast(void *arg, int npending) 1165191746Sthompsa{ 1166191746Sthompsa struct ieee80211com *ic = arg; 1167191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1168191746Sthompsa 1169191746Sthompsa ic->ic_update_mcast(parent); 1170191746Sthompsa} 1171191746Sthompsa 1172191746Sthompsastatic void 1173191746Sthompsaupdate_promisc(void *arg, int npending) 1174191746Sthompsa{ 1175191746Sthompsa struct ieee80211com *ic = arg; 1176191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1177191746Sthompsa 1178191746Sthompsa ic->ic_update_promisc(parent); 1179191746Sthompsa} 1180191746Sthompsa 1181191746Sthompsastatic void 1182191746Sthompsaupdate_channel(void *arg, int npending) 1183191746Sthompsa{ 1184191746Sthompsa struct ieee80211com *ic = arg; 1185191746Sthompsa 1186191746Sthompsa ic->ic_set_channel(ic); 1187192468Ssam ieee80211_radiotap_chan_change(ic); 1188191746Sthompsa} 1189191746Sthompsa 1190233452Sadrianstatic void 1191233452Sadrianupdate_chw(void *arg, int npending) 1192233452Sadrian{ 1193233452Sadrian struct ieee80211com *ic = arg; 1194233452Sadrian 1195233452Sadrian /* 1196233452Sadrian * XXX should we defer the channel width _config_ update until now? 1197233452Sadrian */ 1198233452Sadrian ic->ic_update_chw(ic); 1199233452Sadrian} 1200233452Sadrian 1201170530Ssam/* 1202188533Sthompsa * Block until the parent is in a known state. This is 1203188533Sthompsa * used after any operations that dispatch a task (e.g. 1204188533Sthompsa * to auto-configure the parent device up/down). 1205188533Sthompsa */ 1206188533Sthompsavoid 1207188533Sthompsaieee80211_waitfor_parent(struct ieee80211com *ic) 1208188533Sthompsa{ 1209191746Sthompsa taskqueue_block(ic->ic_tq); 1210191746Sthompsa ieee80211_draintask(ic, &ic->ic_parent_task); 1211191746Sthompsa ieee80211_draintask(ic, &ic->ic_mcast_task); 1212191746Sthompsa ieee80211_draintask(ic, &ic->ic_promisc_task); 1213191746Sthompsa ieee80211_draintask(ic, &ic->ic_chan_task); 1214191746Sthompsa ieee80211_draintask(ic, &ic->ic_bmiss_task); 1215233452Sadrian ieee80211_draintask(ic, &ic->ic_chw_task); 1216191746Sthompsa taskqueue_unblock(ic->ic_tq); 1217188533Sthompsa} 1218188533Sthompsa 1219188533Sthompsa/* 1220178354Ssam * Start a vap running. If this is the first vap to be 1221178354Ssam * set running on the underlying device then we 1222178354Ssam * automatically bring the device up. 1223170530Ssam */ 1224178354Ssamvoid 1225178354Ssamieee80211_start_locked(struct ieee80211vap *vap) 1226170530Ssam{ 1227178354Ssam struct ifnet *ifp = vap->iv_ifp; 1228178354Ssam struct ieee80211com *ic = vap->iv_ic; 1229178354Ssam struct ifnet *parent = ic->ic_ifp; 1230170530Ssam 1231178354Ssam IEEE80211_LOCK_ASSERT(ic); 1232178354Ssam 1233178354Ssam IEEE80211_DPRINTF(vap, 1234170530Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1235178354Ssam "start running, %d vaps running\n", ic->ic_nrunning); 1236170530Ssam 1237178354Ssam if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1238178354Ssam /* 1239178354Ssam * Mark us running. Note that it's ok to do this first; 1240178354Ssam * if we need to bring the parent device up we defer that 1241178354Ssam * to avoid dropping the com lock. We expect the device 1242178354Ssam * to respond to being marked up by calling back into us 1243178354Ssam * through ieee80211_start_all at which point we'll come 1244178354Ssam * back in here and complete the work. 1245178354Ssam */ 1246178354Ssam ifp->if_drv_flags |= IFF_DRV_RUNNING; 1247178354Ssam /* 1248178354Ssam * We are not running; if this we are the first vap 1249178354Ssam * to be brought up auto-up the parent if necessary. 1250178354Ssam */ 1251178354Ssam if (ic->ic_nrunning++ == 0 && 1252178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1253178354Ssam IEEE80211_DPRINTF(vap, 1254178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1255178354Ssam "%s: up parent %s\n", __func__, parent->if_xname); 1256178354Ssam parent->if_flags |= IFF_UP; 1257191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1258178354Ssam return; 1259178354Ssam } 1260178354Ssam } 1261170530Ssam /* 1262178354Ssam * If the parent is up and running, then kick the 1263178354Ssam * 802.11 state machine as appropriate. 1264170530Ssam */ 1265178354Ssam if ((parent->if_drv_flags & IFF_DRV_RUNNING) && 1266178354Ssam vap->iv_roaming != IEEE80211_ROAMING_MANUAL) { 1267178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 1268178354Ssam#if 0 1269178354Ssam /* XXX bypasses scan too easily; disable for now */ 1270178354Ssam /* 1271178354Ssam * Try to be intelligent about clocking the state 1272178354Ssam * machine. If we're currently in RUN state then 1273178354Ssam * we should be able to apply any new state/parameters 1274178354Ssam * simply by re-associating. Otherwise we need to 1275178354Ssam * re-scan to select an appropriate ap. 1276178354Ssam */ 1277178354Ssam if (vap->iv_state >= IEEE80211_S_RUN) 1278178354Ssam ieee80211_new_state_locked(vap, 1279178354Ssam IEEE80211_S_ASSOC, 1); 1280178354Ssam else 1281178354Ssam#endif 1282178354Ssam ieee80211_new_state_locked(vap, 1283178354Ssam IEEE80211_S_SCAN, 0); 1284170530Ssam } else { 1285170530Ssam /* 1286178354Ssam * For monitor+wds mode there's nothing to do but 1287178354Ssam * start running. Otherwise if this is the first 1288170530Ssam * vap to be brought up, start a scan which may be 1289170530Ssam * preempted if the station is locked to a particular 1290170530Ssam * channel. 1291170530Ssam */ 1292191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_REINIT; 1293178354Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR || 1294178354Ssam vap->iv_opmode == IEEE80211_M_WDS) 1295178354Ssam ieee80211_new_state_locked(vap, 1296178354Ssam IEEE80211_S_RUN, -1); 1297178354Ssam else 1298178354Ssam ieee80211_new_state_locked(vap, 1299178354Ssam IEEE80211_S_SCAN, 0); 1300170530Ssam } 1301170530Ssam } 1302170530Ssam} 1303170530Ssam 1304170530Ssam/* 1305178354Ssam * Start a single vap. 1306178354Ssam */ 1307178354Ssamvoid 1308178354Ssamieee80211_init(void *arg) 1309178354Ssam{ 1310178354Ssam struct ieee80211vap *vap = arg; 1311178354Ssam 1312193348Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1313193348Ssam "%s\n", __func__); 1314178354Ssam 1315193348Ssam IEEE80211_LOCK(vap->iv_ic); 1316193348Ssam ieee80211_start_locked(vap); 1317193348Ssam IEEE80211_UNLOCK(vap->iv_ic); 1318178354Ssam} 1319178354Ssam 1320178354Ssam/* 1321178354Ssam * Start all runnable vap's on a device. 1322178354Ssam */ 1323178354Ssamvoid 1324178354Ssamieee80211_start_all(struct ieee80211com *ic) 1325178354Ssam{ 1326178354Ssam struct ieee80211vap *vap; 1327178354Ssam 1328178354Ssam IEEE80211_LOCK(ic); 1329178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1330178354Ssam struct ifnet *ifp = vap->iv_ifp; 1331178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1332178354Ssam ieee80211_start_locked(vap); 1333178354Ssam } 1334178354Ssam IEEE80211_UNLOCK(ic); 1335178354Ssam} 1336178354Ssam 1337178354Ssam/* 1338178354Ssam * Stop a vap. We force it down using the state machine 1339178354Ssam * then mark it's ifnet not running. If this is the last 1340178354Ssam * vap running on the underlying device then we close it 1341178354Ssam * too to insure it will be properly initialized when the 1342178354Ssam * next vap is brought up. 1343178354Ssam */ 1344178354Ssamvoid 1345178354Ssamieee80211_stop_locked(struct ieee80211vap *vap) 1346178354Ssam{ 1347178354Ssam struct ieee80211com *ic = vap->iv_ic; 1348178354Ssam struct ifnet *ifp = vap->iv_ifp; 1349178354Ssam struct ifnet *parent = ic->ic_ifp; 1350178354Ssam 1351178354Ssam IEEE80211_LOCK_ASSERT(ic); 1352178354Ssam 1353178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1354178354Ssam "stop running, %d vaps running\n", ic->ic_nrunning); 1355178354Ssam 1356178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1); 1357178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1358178354Ssam ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */ 1359178354Ssam if (--ic->ic_nrunning == 0 && 1360178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING)) { 1361178354Ssam IEEE80211_DPRINTF(vap, 1362178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1363178354Ssam "down parent %s\n", parent->if_xname); 1364178354Ssam parent->if_flags &= ~IFF_UP; 1365191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1366178354Ssam } 1367178354Ssam } 1368178354Ssam} 1369178354Ssam 1370178354Ssamvoid 1371178354Ssamieee80211_stop(struct ieee80211vap *vap) 1372178354Ssam{ 1373178354Ssam struct ieee80211com *ic = vap->iv_ic; 1374178354Ssam 1375178354Ssam IEEE80211_LOCK(ic); 1376178354Ssam ieee80211_stop_locked(vap); 1377178354Ssam IEEE80211_UNLOCK(ic); 1378178354Ssam} 1379178354Ssam 1380178354Ssam/* 1381178354Ssam * Stop all vap's running on a device. 1382178354Ssam */ 1383178354Ssamvoid 1384178354Ssamieee80211_stop_all(struct ieee80211com *ic) 1385178354Ssam{ 1386178354Ssam struct ieee80211vap *vap; 1387178354Ssam 1388178354Ssam IEEE80211_LOCK(ic); 1389178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1390178354Ssam struct ifnet *ifp = vap->iv_ifp; 1391178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1392178354Ssam ieee80211_stop_locked(vap); 1393178354Ssam } 1394178354Ssam IEEE80211_UNLOCK(ic); 1395188533Sthompsa 1396188533Sthompsa ieee80211_waitfor_parent(ic); 1397178354Ssam} 1398178354Ssam 1399178354Ssam/* 1400179391Ssam * Stop all vap's running on a device and arrange 1401179391Ssam * for those that were running to be resumed. 1402179391Ssam */ 1403179391Ssamvoid 1404179391Ssamieee80211_suspend_all(struct ieee80211com *ic) 1405179391Ssam{ 1406179391Ssam struct ieee80211vap *vap; 1407179391Ssam 1408179391Ssam IEEE80211_LOCK(ic); 1409179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1410179391Ssam struct ifnet *ifp = vap->iv_ifp; 1411179391Ssam if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */ 1412179391Ssam vap->iv_flags_ext |= IEEE80211_FEXT_RESUME; 1413179391Ssam ieee80211_stop_locked(vap); 1414179391Ssam } 1415179391Ssam } 1416179391Ssam IEEE80211_UNLOCK(ic); 1417188533Sthompsa 1418188533Sthompsa ieee80211_waitfor_parent(ic); 1419179391Ssam} 1420179391Ssam 1421179391Ssam/* 1422179391Ssam * Start all vap's marked for resume. 1423179391Ssam */ 1424179391Ssamvoid 1425179391Ssamieee80211_resume_all(struct ieee80211com *ic) 1426179391Ssam{ 1427179391Ssam struct ieee80211vap *vap; 1428179391Ssam 1429179391Ssam IEEE80211_LOCK(ic); 1430179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1431179391Ssam struct ifnet *ifp = vap->iv_ifp; 1432179391Ssam if (!IFNET_IS_UP_RUNNING(ifp) && 1433179391Ssam (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) { 1434179391Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME; 1435179391Ssam ieee80211_start_locked(vap); 1436179391Ssam } 1437179391Ssam } 1438179391Ssam IEEE80211_UNLOCK(ic); 1439179391Ssam} 1440179391Ssam 1441153349Ssamvoid 1442153349Ssamieee80211_beacon_miss(struct ieee80211com *ic) 1443153349Ssam{ 1444191746Sthompsa IEEE80211_LOCK(ic); 1445191746Sthompsa if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1446191746Sthompsa /* Process in a taskq, the handler may reenter the driver */ 1447191746Sthompsa ieee80211_runtask(ic, &ic->ic_bmiss_task); 1448191746Sthompsa } 1449191746Sthompsa IEEE80211_UNLOCK(ic); 1450191746Sthompsa} 1451191746Sthompsa 1452191746Sthompsastatic void 1453191746Sthompsabeacon_miss(void *arg, int npending) 1454191746Sthompsa{ 1455191746Sthompsa struct ieee80211com *ic = arg; 1456178354Ssam struct ieee80211vap *vap; 1457153349Ssam 1458225913Sadrian IEEE80211_LOCK(ic); 1459178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1460153349Ssam /* 1461178354Ssam * We only pass events through for sta vap's in RUN state; 1462178354Ssam * may be too restrictive but for now this saves all the 1463178354Ssam * handlers duplicating these checks. 1464153349Ssam */ 1465178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 1466193439Ssam vap->iv_state >= IEEE80211_S_RUN && 1467178354Ssam vap->iv_bmiss != NULL) 1468178354Ssam vap->iv_bmiss(vap); 1469153349Ssam } 1470225913Sadrian IEEE80211_UNLOCK(ic); 1471153349Ssam} 1472153349Ssam 1473191746Sthompsastatic void 1474191746Sthompsabeacon_swmiss(void *arg, int npending) 1475191746Sthompsa{ 1476191746Sthompsa struct ieee80211vap *vap = arg; 1477225913Sadrian struct ieee80211com *ic = vap->iv_ic; 1478191746Sthompsa 1479225913Sadrian IEEE80211_LOCK(ic); 1480225913Sadrian if (vap->iv_state == IEEE80211_S_RUN) { 1481225913Sadrian /* XXX Call multiple times if npending > zero? */ 1482225913Sadrian vap->iv_bmiss(vap); 1483225913Sadrian } 1484225913Sadrian IEEE80211_UNLOCK(ic); 1485191746Sthompsa} 1486191746Sthompsa 1487154736Ssam/* 1488154736Ssam * Software beacon miss handling. Check if any beacons 1489154736Ssam * were received in the last period. If not post a 1490154736Ssam * beacon miss; otherwise reset the counter. 1491154736Ssam */ 1492178354Ssamvoid 1493154736Ssamieee80211_swbmiss(void *arg) 1494154736Ssam{ 1495178354Ssam struct ieee80211vap *vap = arg; 1496179217Ssam struct ieee80211com *ic = vap->iv_ic; 1497154736Ssam 1498225913Sadrian IEEE80211_LOCK_ASSERT(ic); 1499225913Sadrian 1500179217Ssam /* XXX sleep state? */ 1501179217Ssam KASSERT(vap->iv_state == IEEE80211_S_RUN, 1502179217Ssam ("wrong state %d", vap->iv_state)); 1503179217Ssam 1504179217Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1505179217Ssam /* 1506179217Ssam * If scanning just ignore and reset state. If we get a 1507179217Ssam * bmiss after coming out of scan because we haven't had 1508179217Ssam * time to receive a beacon then we should probe the AP 1509179217Ssam * before posting a real bmiss (unless iv_bmiss_max has 1510179217Ssam * been artifiically lowered). A cleaner solution might 1511179217Ssam * be to disable the timer on scan start/end but to handle 1512179217Ssam * case of multiple sta vap's we'd need to disable the 1513179217Ssam * timers of all affected vap's. 1514179217Ssam */ 1515179217Ssam vap->iv_swbmiss_count = 0; 1516179217Ssam } else if (vap->iv_swbmiss_count == 0) { 1517178354Ssam if (vap->iv_bmiss != NULL) 1518191746Sthompsa ieee80211_runtask(ic, &vap->iv_swbmiss_task); 1519154736Ssam } else 1520178354Ssam vap->iv_swbmiss_count = 0; 1521178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 1522178354Ssam ieee80211_swbmiss, vap); 1523154736Ssam} 1524154736Ssam 1525178354Ssam/* 1526178354Ssam * Start an 802.11h channel switch. We record the parameters, 1527178354Ssam * mark the operation pending, notify each vap through the 1528178354Ssam * beacon update mechanism so it can update the beacon frame 1529178354Ssam * contents, and then switch vap's to CSA state to block outbound 1530178354Ssam * traffic. Devices that handle CSA directly can use the state 1531178354Ssam * switch to do the right thing so long as they call 1532178354Ssam * ieee80211_csa_completeswitch when it's time to complete the 1533178354Ssam * channel change. Devices that depend on the net80211 layer can 1534178354Ssam * use ieee80211_beacon_update to handle the countdown and the 1535178354Ssam * channel switch. 1536178354Ssam */ 1537178354Ssamvoid 1538178354Ssamieee80211_csa_startswitch(struct ieee80211com *ic, 1539178354Ssam struct ieee80211_channel *c, int mode, int count) 1540178354Ssam{ 1541178354Ssam struct ieee80211vap *vap; 1542178354Ssam 1543178354Ssam IEEE80211_LOCK_ASSERT(ic); 1544178354Ssam 1545178354Ssam ic->ic_csa_newchan = c; 1546193439Ssam ic->ic_csa_mode = mode; 1547178354Ssam ic->ic_csa_count = count; 1548178354Ssam ic->ic_flags |= IEEE80211_F_CSAPENDING; 1549178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1550178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP || 1551195618Srpaulo vap->iv_opmode == IEEE80211_M_IBSS || 1552195618Srpaulo vap->iv_opmode == IEEE80211_M_MBSS) 1553178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA); 1554178354Ssam /* switch to CSA state to block outbound traffic */ 1555178354Ssam if (vap->iv_state == IEEE80211_S_RUN) 1556178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0); 1557178354Ssam } 1558178354Ssam ieee80211_notify_csa(ic, c, mode, count); 1559178354Ssam} 1560178354Ssam 1561224220Sadrian/* 1562224220Sadrian * Complete the channel switch by transitioning all CSA VAPs to RUN. 1563224220Sadrian * This is called by both the completion and cancellation functions 1564224220Sadrian * so each VAP is placed back in the RUN state and can thus transmit. 1565224220Sadrian */ 1566193439Ssamstatic void 1567193439Ssamcsa_completeswitch(struct ieee80211com *ic) 1568193439Ssam{ 1569193439Ssam struct ieee80211vap *vap; 1570193439Ssam 1571193439Ssam ic->ic_csa_newchan = NULL; 1572193439Ssam ic->ic_flags &= ~IEEE80211_F_CSAPENDING; 1573193439Ssam 1574193439Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1575193439Ssam if (vap->iv_state == IEEE80211_S_CSA) 1576193439Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1577193439Ssam} 1578193439Ssam 1579178354Ssam/* 1580178354Ssam * Complete an 802.11h channel switch started by ieee80211_csa_startswitch. 1581178354Ssam * We clear state and move all vap's in CSA state to RUN state 1582178354Ssam * so they can again transmit. 1583224220Sadrian * 1584224220Sadrian * Although this may not be completely correct, update the BSS channel 1585224220Sadrian * for each VAP to the newly configured channel. The setcurchan sets 1586224220Sadrian * the current operating channel for the interface (so the radio does 1587224220Sadrian * switch over) but the VAP BSS isn't updated, leading to incorrectly 1588224220Sadrian * reported information via ioctl. 1589178354Ssam */ 1590178354Ssamvoid 1591178354Ssamieee80211_csa_completeswitch(struct ieee80211com *ic) 1592178354Ssam{ 1593224222Sadrian struct ieee80211vap *vap; 1594224222Sadrian 1595178354Ssam IEEE80211_LOCK_ASSERT(ic); 1596178354Ssam 1597178354Ssam KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending")); 1598178354Ssam 1599178354Ssam ieee80211_setcurchan(ic, ic->ic_csa_newchan); 1600224220Sadrian TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1601224220Sadrian if (vap->iv_state == IEEE80211_S_CSA) 1602224220Sadrian vap->iv_bss->ni_chan = ic->ic_curchan; 1603224220Sadrian 1604193439Ssam csa_completeswitch(ic); 1605193439Ssam} 1606178354Ssam 1607193439Ssam/* 1608193439Ssam * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch. 1609193439Ssam * We clear state and move all vap's in CSA state to RUN state 1610193439Ssam * so they can again transmit. 1611193439Ssam */ 1612193439Ssamvoid 1613193439Ssamieee80211_csa_cancelswitch(struct ieee80211com *ic) 1614193439Ssam{ 1615193439Ssam IEEE80211_LOCK_ASSERT(ic); 1616193439Ssam 1617193439Ssam csa_completeswitch(ic); 1618178354Ssam} 1619178354Ssam 1620178354Ssam/* 1621178354Ssam * Complete a DFS CAC started by ieee80211_dfs_cac_start. 1622178354Ssam * We clear state and move all vap's in CAC state to RUN state. 1623178354Ssam */ 1624178354Ssamvoid 1625178354Ssamieee80211_cac_completeswitch(struct ieee80211vap *vap0) 1626178354Ssam{ 1627178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1628178354Ssam struct ieee80211vap *vap; 1629178354Ssam 1630178354Ssam IEEE80211_LOCK(ic); 1631178354Ssam /* 1632178354Ssam * Complete CAC state change for lead vap first; then 1633178354Ssam * clock all the other vap's waiting. 1634178354Ssam */ 1635178354Ssam KASSERT(vap0->iv_state == IEEE80211_S_CAC, 1636178354Ssam ("wrong state %d", vap0->iv_state)); 1637178354Ssam ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0); 1638178354Ssam 1639178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1640178354Ssam if (vap->iv_state == IEEE80211_S_CAC) 1641178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1642178354Ssam IEEE80211_UNLOCK(ic); 1643178354Ssam} 1644178354Ssam 1645178354Ssam/* 1646178354Ssam * Force all vap's other than the specified vap to the INIT state 1647178354Ssam * and mark them as waiting for a scan to complete. These vaps 1648178354Ssam * will be brought up when the scan completes and the scanning vap 1649178354Ssam * reaches RUN state by wakeupwaiting. 1650178354Ssam */ 1651154736Ssamstatic void 1652178354Ssammarkwaiting(struct ieee80211vap *vap0) 1653147765Ssam{ 1654178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1655178354Ssam struct ieee80211vap *vap; 1656147765Ssam 1657178354Ssam IEEE80211_LOCK_ASSERT(ic); 1658178354Ssam 1659191746Sthompsa /* 1660191746Sthompsa * A vap list entry can not disappear since we are running on the 1661191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1662191746Sthompsa * change task. 1663191746Sthompsa */ 1664178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1665178354Ssam if (vap == vap0) 1666178354Ssam continue; 1667178354Ssam if (vap->iv_state != IEEE80211_S_INIT) { 1668191746Sthompsa /* NB: iv_newstate may drop the lock */ 1669178354Ssam vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 1670232096Sadrian IEEE80211_LOCK_ASSERT(ic); 1671178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1672178354Ssam } 1673147765Ssam } 1674147765Ssam} 1675147765Ssam 1676178354Ssam/* 1677178354Ssam * Wakeup all vap's waiting for a scan to complete. This is the 1678178354Ssam * companion to markwaiting (above) and is used to coordinate 1679178354Ssam * multiple vaps scanning. 1680191746Sthompsa * This is called from the state taskqueue. 1681178354Ssam */ 1682147765Ssamstatic void 1683178354Ssamwakeupwaiting(struct ieee80211vap *vap0) 1684147765Ssam{ 1685178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1686178354Ssam struct ieee80211vap *vap; 1687147765Ssam 1688178354Ssam IEEE80211_LOCK_ASSERT(ic); 1689178354Ssam 1690191746Sthompsa /* 1691191746Sthompsa * A vap list entry can not disappear since we are running on the 1692191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1693191746Sthompsa * change task. 1694191746Sthompsa */ 1695178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1696178354Ssam if (vap == vap0) 1697178354Ssam continue; 1698178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) { 1699178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1700178354Ssam /* NB: sta's cannot go INIT->RUN */ 1701191746Sthompsa /* NB: iv_newstate may drop the lock */ 1702178354Ssam vap->iv_newstate(vap, 1703178354Ssam vap->iv_opmode == IEEE80211_M_STA ? 1704178354Ssam IEEE80211_S_SCAN : IEEE80211_S_RUN, 0); 1705232096Sadrian IEEE80211_LOCK_ASSERT(ic); 1706178354Ssam } 1707178354Ssam } 1708147765Ssam} 1709147765Ssam 1710170530Ssam/* 1711178354Ssam * Handle post state change work common to all operating modes. 1712170530Ssam */ 1713170530Ssamstatic void 1714191746Sthompsaieee80211_newstate_cb(void *xvap, int npending) 1715170530Ssam{ 1716191746Sthompsa struct ieee80211vap *vap = xvap; 1717178354Ssam struct ieee80211com *ic = vap->iv_ic; 1718191746Sthompsa enum ieee80211_state nstate, ostate; 1719191746Sthompsa int arg, rc; 1720178354Ssam 1721191746Sthompsa IEEE80211_LOCK(ic); 1722191746Sthompsa nstate = vap->iv_nstate; 1723191746Sthompsa arg = vap->iv_nstate_arg; 1724178354Ssam 1725191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) { 1726191746Sthompsa /* 1727191746Sthompsa * We have been requested to drop back to the INIT before 1728191746Sthompsa * proceeding to the new state. 1729191746Sthompsa */ 1730191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1731191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1732191746Sthompsa ieee80211_state_name[vap->iv_state], 1733191746Sthompsa ieee80211_state_name[IEEE80211_S_INIT], arg); 1734191746Sthompsa vap->iv_newstate(vap, IEEE80211_S_INIT, arg); 1735232096Sadrian IEEE80211_LOCK_ASSERT(ic); 1736191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT; 1737191746Sthompsa } 1738191746Sthompsa 1739191746Sthompsa ostate = vap->iv_state; 1740191746Sthompsa if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) { 1741191746Sthompsa /* 1742191746Sthompsa * SCAN was forced; e.g. on beacon miss. Force other running 1743191746Sthompsa * vap's to INIT state and mark them as waiting for the scan to 1744191746Sthompsa * complete. This insures they don't interfere with our 1745191746Sthompsa * scanning. Since we are single threaded the vaps can not 1746191746Sthompsa * transition again while we are executing. 1747191746Sthompsa * 1748191746Sthompsa * XXX not always right, assumes ap follows sta 1749191746Sthompsa */ 1750191746Sthompsa markwaiting(vap); 1751191746Sthompsa } 1752178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1753191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1754191746Sthompsa ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); 1755178354Ssam 1756191746Sthompsa rc = vap->iv_newstate(vap, nstate, arg); 1757232096Sadrian IEEE80211_LOCK_ASSERT(ic); 1758191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT; 1759191746Sthompsa if (rc != 0) { 1760191746Sthompsa /* State transition failed */ 1761191746Sthompsa KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred")); 1762191746Sthompsa KASSERT(nstate != IEEE80211_S_INIT, 1763191746Sthompsa ("INIT state change failed")); 1764191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1765191746Sthompsa "%s: %s returned error %d\n", __func__, 1766191746Sthompsa ieee80211_state_name[nstate], rc); 1767191746Sthompsa goto done; 1768191746Sthompsa } 1769191746Sthompsa 1770191746Sthompsa /* No actual transition, skip post processing */ 1771191746Sthompsa if (ostate == nstate) 1772191746Sthompsa goto done; 1773191746Sthompsa 1774178354Ssam if (nstate == IEEE80211_S_RUN) { 1775178354Ssam /* 1776178354Ssam * OACTIVE may be set on the vap if the upper layer 1777178354Ssam * tried to transmit (e.g. IPv6 NDP) before we reach 1778178354Ssam * RUN state. Clear it and restart xmit. 1779178354Ssam * 1780178354Ssam * Note this can also happen as a result of SLEEP->RUN 1781178354Ssam * (i.e. coming out of power save mode). 1782178354Ssam */ 1783178354Ssam vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1784244577Sadrian 1785244577Sadrian /* 1786254082Sadrian * XXX TODO Kick-start a VAP queue - this should be a method! 1787244577Sadrian */ 1788178354Ssam 1789178354Ssam /* bring up any vaps waiting on us */ 1790178354Ssam wakeupwaiting(vap); 1791178354Ssam } else if (nstate == IEEE80211_S_INIT) { 1792178354Ssam /* 1793178354Ssam * Flush the scan cache if we did the last scan (XXX?) 1794178354Ssam * and flush any frames on send queues from this vap. 1795178354Ssam * Note the mgt q is used only for legacy drivers and 1796178354Ssam * will go away shortly. 1797178354Ssam */ 1798178354Ssam ieee80211_scan_flush(vap); 1799178354Ssam 1800254082Sadrian /* 1801254082Sadrian * XXX TODO: ic/vap queue flush 1802254082Sadrian */ 1803170530Ssam } 1804191746Sthompsadone: 1805191746Sthompsa IEEE80211_UNLOCK(ic); 1806170530Ssam} 1807170530Ssam 1808178354Ssam/* 1809178354Ssam * Public interface for initiating a state machine change. 1810178354Ssam * This routine single-threads the request and coordinates 1811178354Ssam * the scheduling of multiple vaps for the purpose of selecting 1812178354Ssam * an operating channel. Specifically the following scenarios 1813178354Ssam * are handled: 1814178354Ssam * o only one vap can be selecting a channel so on transition to 1815178354Ssam * SCAN state if another vap is already scanning then 1816178354Ssam * mark the caller for later processing and return without 1817178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1818178354Ssam * o only one vap can be doing CAC of a channel so on transition to 1819178354Ssam * CAC state if another vap is already scanning for radar then 1820178354Ssam * mark the caller for later processing and return without 1821178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1822178354Ssam * o if another vap is already running when a request is made 1823178354Ssam * to SCAN then an operating channel has been chosen; bypass 1824178354Ssam * the scan and just join the channel 1825178354Ssam * 1826178354Ssam * Note that the state change call is done through the iv_newstate 1827178354Ssam * method pointer so any driver routine gets invoked. The driver 1828178354Ssam * will normally call back into operating mode-specific 1829178354Ssam * ieee80211_newstate routines (below) unless it needs to completely 1830178354Ssam * bypass the state machine (e.g. because the firmware has it's 1831178354Ssam * own idea how things should work). Bypassing the net80211 layer 1832178354Ssam * is usually a mistake and indicates lack of proper integration 1833178354Ssam * with the net80211 layer. 1834178354Ssam */ 1835259188Sgavinint 1836178354Ssamieee80211_new_state_locked(struct ieee80211vap *vap, 1837178354Ssam enum ieee80211_state nstate, int arg) 1838116742Ssam{ 1839178354Ssam struct ieee80211com *ic = vap->iv_ic; 1840178354Ssam struct ieee80211vap *vp; 1841117811Ssam enum ieee80211_state ostate; 1842191746Sthompsa int nrunning, nscanning; 1843116742Ssam 1844178354Ssam IEEE80211_LOCK_ASSERT(ic); 1845178354Ssam 1846191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) { 1847191746Sthompsa if (vap->iv_nstate == IEEE80211_S_INIT) { 1848191746Sthompsa /* 1849191746Sthompsa * XXX The vap is being stopped, do no allow any other 1850191746Sthompsa * state changes until this is completed. 1851191746Sthompsa */ 1852191746Sthompsa return -1; 1853191768Sthompsa } else if (vap->iv_state != vap->iv_nstate) { 1854191746Sthompsa#if 0 1855191768Sthompsa /* Warn if the previous state hasn't completed. */ 1856191768Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1857191768Sthompsa "%s: pending %s -> %s transition lost\n", __func__, 1858191768Sthompsa ieee80211_state_name[vap->iv_state], 1859191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1860191746Sthompsa#else 1861191768Sthompsa /* XXX temporarily enable to identify issues */ 1862191768Sthompsa if_printf(vap->iv_ifp, 1863191768Sthompsa "%s: pending %s -> %s transition lost\n", 1864191768Sthompsa __func__, ieee80211_state_name[vap->iv_state], 1865191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1866191746Sthompsa#endif 1867191768Sthompsa } 1868191746Sthompsa } 1869191746Sthompsa 1870178354Ssam nrunning = nscanning = 0; 1871178354Ssam /* XXX can track this state instead of calculating */ 1872178354Ssam TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) { 1873178354Ssam if (vp != vap) { 1874178354Ssam if (vp->iv_state >= IEEE80211_S_RUN) 1875178354Ssam nrunning++; 1876178354Ssam /* XXX doesn't handle bg scan */ 1877178354Ssam /* NB: CAC+AUTH+ASSOC treated like SCAN */ 1878178354Ssam else if (vp->iv_state > IEEE80211_S_INIT) 1879178354Ssam nscanning++; 1880178354Ssam } 1881178354Ssam } 1882178354Ssam ostate = vap->iv_state; 1883178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1884178354Ssam "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__, 1885178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate], 1886178354Ssam nrunning, nscanning); 1887116742Ssam switch (nstate) { 1888116742Ssam case IEEE80211_S_SCAN: 1889178354Ssam if (ostate == IEEE80211_S_INIT) { 1890178354Ssam /* 1891178354Ssam * INIT -> SCAN happens on initial bringup. 1892178354Ssam */ 1893178354Ssam KASSERT(!(nscanning && nrunning), 1894178354Ssam ("%d scanning and %d running", nscanning, nrunning)); 1895178354Ssam if (nscanning) { 1896116742Ssam /* 1897178354Ssam * Someone is scanning, defer our state 1898178354Ssam * change until the work has completed. 1899116742Ssam */ 1900178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1901178354Ssam "%s: defer %s -> %s\n", 1902178354Ssam __func__, ieee80211_state_name[ostate], 1903178354Ssam ieee80211_state_name[nstate]); 1904178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1905191746Sthompsa return 0; 1906116742Ssam } 1907178354Ssam if (nrunning) { 1908170530Ssam /* 1909178354Ssam * Someone is operating; just join the channel 1910178354Ssam * they have chosen. 1911170530Ssam */ 1912178354Ssam /* XXX kill arg? */ 1913178354Ssam /* XXX check each opmode, adhoc? */ 1914178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) 1915178354Ssam nstate = IEEE80211_S_SCAN; 1916178354Ssam else 1917178354Ssam nstate = IEEE80211_S_RUN; 1918138568Ssam#ifdef IEEE80211_DEBUG 1919178354Ssam if (nstate != IEEE80211_S_SCAN) { 1920178354Ssam IEEE80211_DPRINTF(vap, 1921178354Ssam IEEE80211_MSG_STATE, 1922178354Ssam "%s: override, now %s -> %s\n", 1923178354Ssam __func__, 1924178354Ssam ieee80211_state_name[ostate], 1925178354Ssam ieee80211_state_name[nstate]); 1926178354Ssam } 1927138568Ssam#endif 1928170530Ssam } 1929116742Ssam } 1930178354Ssam break; 1931178354Ssam case IEEE80211_S_RUN: 1932178354Ssam if (vap->iv_opmode == IEEE80211_M_WDS && 1933178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) && 1934178354Ssam nscanning) { 1935154736Ssam /* 1936178354Ssam * Legacy WDS with someone else scanning; don't 1937178354Ssam * go online until that completes as we should 1938178354Ssam * follow the other vap to the channel they choose. 1939154736Ssam */ 1940178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1941178354Ssam "%s: defer %s -> %s (legacy WDS)\n", __func__, 1942178354Ssam ieee80211_state_name[ostate], 1943178354Ssam ieee80211_state_name[nstate]); 1944178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1945191746Sthompsa return 0; 1946154736Ssam } 1947178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1948178354Ssam IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) && 1949178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_DFS) && 1950178354Ssam !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) { 1951178354Ssam /* 1952178354Ssam * This is a DFS channel, transition to CAC state 1953178354Ssam * instead of RUN. This allows us to initiate 1954178354Ssam * Channel Availability Check (CAC) as specified 1955178354Ssam * by 11h/DFS. 1956178354Ssam */ 1957178354Ssam nstate = IEEE80211_S_CAC; 1958178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1959178354Ssam "%s: override %s -> %s (DFS)\n", __func__, 1960178354Ssam ieee80211_state_name[ostate], 1961178354Ssam ieee80211_state_name[nstate]); 1962138568Ssam } 1963116742Ssam break; 1964178354Ssam case IEEE80211_S_INIT: 1965191955Sthompsa /* cancel any scan in progress */ 1966191955Sthompsa ieee80211_cancel_scan(vap); 1967178354Ssam if (ostate == IEEE80211_S_INIT ) { 1968178354Ssam /* XXX don't believe this */ 1969178354Ssam /* INIT -> INIT. nothing to do */ 1970178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1971178354Ssam } 1972178354Ssam /* fall thru... */ 1973172058Ssam default: 1974172058Ssam break; 1975116742Ssam } 1976191746Sthompsa /* defer the state change to a thread */ 1977191746Sthompsa vap->iv_nstate = nstate; 1978191746Sthompsa vap->iv_nstate_arg = arg; 1979191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT; 1980191746Sthompsa ieee80211_runtask(ic, &vap->iv_nstate_task); 1981191746Sthompsa return EINPROGRESS; 1982116742Ssam} 1983178354Ssam 1984178354Ssamint 1985178354Ssamieee80211_new_state(struct ieee80211vap *vap, 1986178354Ssam enum ieee80211_state nstate, int arg) 1987178354Ssam{ 1988178354Ssam struct ieee80211com *ic = vap->iv_ic; 1989178354Ssam int rc; 1990178354Ssam 1991178354Ssam IEEE80211_LOCK(ic); 1992178354Ssam rc = ieee80211_new_state_locked(vap, nstate, arg); 1993178354Ssam IEEE80211_UNLOCK(ic); 1994178354Ssam return rc; 1995178354Ssam} 1996