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); 108191746Sthompsastatic void ieee80211_newstate_cb(void *, int); 109178354Ssamstatic int ieee80211_new_state_locked(struct ieee80211vap *, 110178354Ssam enum ieee80211_state, int); 111117811Ssam 112178354Ssamstatic int 113178354Ssamnull_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 114178354Ssam const struct ieee80211_bpf_params *params) 115172211Ssam{ 116178354Ssam struct ifnet *ifp = ni->ni_ic->ic_ifp; 117178354Ssam 118178354Ssam if_printf(ifp, "missing ic_raw_xmit callback, drop frame\n"); 119178354Ssam m_freem(m); 120178354Ssam return ENETDOWN; 121172211Ssam} 122172211Ssam 123116742Ssamvoid 124138568Ssamieee80211_proto_attach(struct ieee80211com *ic) 125116742Ssam{ 126138568Ssam struct ifnet *ifp = ic->ic_ifp; 127116742Ssam 128178354Ssam /* override the 802.3 setting */ 129178354Ssam ifp->if_hdrlen = ic->ic_headroom 130178354Ssam + sizeof(struct ieee80211_qosframe_addr4) 131178354Ssam + IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN 132178354Ssam + IEEE80211_WEP_EXTIVLEN; 133178354Ssam /* XXX no way to recalculate on ifdetach */ 134178354Ssam if (ALIGN(ifp->if_hdrlen) > max_linkhdr) { 135178354Ssam /* XXX sanity check... */ 136178354Ssam max_linkhdr = ALIGN(ifp->if_hdrlen); 137178354Ssam max_hdr = max_linkhdr + max_protohdr; 138178354Ssam max_datalen = MHLEN - max_hdr; 139178354Ssam } 140127648Ssam ic->ic_protmode = IEEE80211_PROT_CTSONLY; 141116742Ssam 142178354Ssam TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ifp); 143191746Sthompsa TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic); 144191746Sthompsa TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic); 145191746Sthompsa TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic); 146191746Sthompsa TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, 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; 196178354Ssam callout_init(&vap->iv_swbmiss, CALLOUT_MPSAFE); 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#define N(a) (sizeof(a) / sizeof(a[0])) 664138568Ssam static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 }; 665138568Ssam int i, j; 666138568Ssam 667138568Ssam if (rs->rs_nrates < N(rates)) 668138568Ssam return 0; 669138568Ssam for (i = 0; i < N(rates); i++) { 670138568Ssam for (j = 0; j < rs->rs_nrates; j++) { 671138568Ssam int r = rs->rs_rates[j] & IEEE80211_RATE_VAL; 672138568Ssam if (rates[i] == r) 673138568Ssam goto next; 674138568Ssam if (r > rates[i]) 675138568Ssam return 0; 676138568Ssam } 677138568Ssam return 0; 678138568Ssam next: 679138568Ssam ; 680138568Ssam } 681138568Ssam return 1; 682138568Ssam#undef N 683138568Ssam} 684138568Ssam 685138568Ssam/* 686178354Ssam * Mark the basic rates for the rate table based on the 687138568Ssam * operating mode. For real 11g we mark all the 11b rates 688138568Ssam * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 689138568Ssam * 11b rates. There's also a pseudo 11a-mode used to mark only 690138568Ssam * the basic OFDM rates. 691138568Ssam */ 692178354Ssamstatic void 693178354Ssamsetbasicrates(struct ieee80211_rateset *rs, 694178354Ssam enum ieee80211_phymode mode, int add) 695138568Ssam{ 696170530Ssam static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = { 697188780Ssam [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } }, 698188780Ssam [IEEE80211_MODE_11B] = { 2, { 2, 4 } }, 699188780Ssam /* NB: mixed b/g */ 700188780Ssam [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } }, 701188780Ssam [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } }, 702188780Ssam [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } }, 703188780Ssam [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } }, 704188782Ssam [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } }, 705188782Ssam [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } }, 706188780Ssam [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } }, 707188780Ssam /* NB: mixed b/g */ 708188780Ssam [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } }, 709138568Ssam }; 710138568Ssam int i, j; 711138568Ssam 712138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 713178354Ssam if (!add) 714178354Ssam rs->rs_rates[i] &= IEEE80211_RATE_VAL; 715138568Ssam for (j = 0; j < basic[mode].rs_nrates; j++) 716138568Ssam if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 717138568Ssam rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 718138568Ssam break; 719138568Ssam } 720138568Ssam } 721138568Ssam} 722138568Ssam 723138568Ssam/* 724178354Ssam * Set the basic rates in a rate set. 725138568Ssam */ 726178354Ssamvoid 727178354Ssamieee80211_setbasicrates(struct ieee80211_rateset *rs, 728178354Ssam enum ieee80211_phymode mode) 729178354Ssam{ 730178354Ssam setbasicrates(rs, mode, 0); 731178354Ssam} 732178354Ssam 733178354Ssam/* 734178354Ssam * Add basic rates to a rate set. 735178354Ssam */ 736178354Ssamvoid 737178354Ssamieee80211_addbasicrates(struct ieee80211_rateset *rs, 738178354Ssam enum ieee80211_phymode mode) 739178354Ssam{ 740178354Ssam setbasicrates(rs, mode, 1); 741178354Ssam} 742178354Ssam 743178354Ssam/* 744178354Ssam * WME protocol support. 745178354Ssam * 746178354Ssam * The default 11a/b/g/n parameters come from the WiFi Alliance WMM 747178354Ssam * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n 748178354Ssam * Draft 2.0 Test Plan (Appendix D). 749178354Ssam * 750178354Ssam * Static/Dynamic Turbo mode settings come from Atheros. 751178354Ssam */ 752138568Ssamtypedef struct phyParamType { 753178354Ssam uint8_t aifsn; 754178354Ssam uint8_t logcwmin; 755178354Ssam uint8_t logcwmax; 756178354Ssam uint16_t txopLimit; 757178354Ssam uint8_t acm; 758138568Ssam} paramType; 759138568Ssam 760138568Ssamstatic const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = { 761188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 }, 762188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 }, 763188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 }, 764188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 }, 765188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 }, 766188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 }, 767188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 }, 768188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 }, 769188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 }, 770188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 }, 771188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 }, 772188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 }, 773138568Ssam}; 774138568Ssamstatic const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = { 775188780Ssam [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 }, 776188780Ssam [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 }, 777188780Ssam [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 }, 778188780Ssam [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 }, 779188780Ssam [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 }, 780188780Ssam [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 }, 781188780Ssam [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 }, 782188780Ssam [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 }, 783188782Ssam [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 }, 784188782Ssam [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 }, 785188780Ssam [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 }, 786188780Ssam [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 }, 787138568Ssam}; 788138568Ssamstatic const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = { 789188780Ssam [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 }, 790188780Ssam [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 }, 791188780Ssam [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 }, 792188780Ssam [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 }, 793188780Ssam [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 }, 794188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 }, 795188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 }, 796188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 }, 797188782Ssam [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 }, 798188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 }, 799188780Ssam [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 }, 800188780Ssam [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 }, 801138568Ssam}; 802138568Ssamstatic const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = { 803188780Ssam [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 }, 804188780Ssam [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 }, 805188780Ssam [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 }, 806188780Ssam [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 }, 807188780Ssam [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 }, 808188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 809188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 810188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 811188782Ssam [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 }, 812188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 }, 813188780Ssam [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 }, 814188780Ssam [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 }, 815138568Ssam}; 816138568Ssam 817138568Ssamstatic const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = { 818188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 }, 819188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 }, 820188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 }, 821188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 }, 822188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 }, 823188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 }, 824188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 }, 825188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 }, 826188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 }, 827188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 }, 828188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 }, 829188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 }, 830138568Ssam}; 831138568Ssamstatic const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = { 832188780Ssam [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 }, 833188780Ssam [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 }, 834188780Ssam [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 }, 835188780Ssam [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 }, 836188780Ssam [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 }, 837188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 }, 838188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 }, 839188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 }, 840188782Ssam [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 }, 841188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 }, 842188780Ssam [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 }, 843188780Ssam [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 }, 844138568Ssam}; 845138568Ssamstatic const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = { 846188780Ssam [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 }, 847188780Ssam [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 }, 848188780Ssam [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 }, 849188780Ssam [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 }, 850188780Ssam [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 }, 851188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 852188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 853188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 854188782Ssam [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 }, 855188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 }, 856188780Ssam [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 }, 857188780Ssam [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 }, 858138568Ssam}; 859138568Ssam 860178354Ssamstatic void 861188863Ssam_setifsparams(struct wmeParams *wmep, const paramType *phy) 862188863Ssam{ 863188863Ssam wmep->wmep_aifsn = phy->aifsn; 864188863Ssam wmep->wmep_logcwmin = phy->logcwmin; 865188863Ssam wmep->wmep_logcwmax = phy->logcwmax; 866188863Ssam wmep->wmep_txopLimit = phy->txopLimit; 867188863Ssam} 868188863Ssam 869188863Ssamstatic void 870188863Ssamsetwmeparams(struct ieee80211vap *vap, const char *type, int ac, 871188863Ssam struct wmeParams *wmep, const paramType *phy) 872188863Ssam{ 873188863Ssam wmep->wmep_acm = phy->acm; 874188863Ssam _setifsparams(wmep, phy); 875188863Ssam 876188863Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 877188863Ssam "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n", 878188863Ssam ieee80211_wme_acnames[ac], type, 879188863Ssam wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin, 880188863Ssam wmep->wmep_logcwmax, wmep->wmep_txopLimit); 881188863Ssam} 882188863Ssam 883188863Ssamstatic void 884178354Ssamieee80211_wme_initparams_locked(struct ieee80211vap *vap) 885138568Ssam{ 886178354Ssam struct ieee80211com *ic = vap->iv_ic; 887138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 888138568Ssam const paramType *pPhyParam, *pBssPhyParam; 889138568Ssam struct wmeParams *wmep; 890170530Ssam enum ieee80211_phymode mode; 891138568Ssam int i; 892138568Ssam 893178354Ssam IEEE80211_LOCK_ASSERT(ic); 894178354Ssam 895188864Ssam if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1) 896138568Ssam return; 897138568Ssam 898170530Ssam /* 899219961Sadrian * Clear the wme cap_info field so a qoscount from a previous 900219961Sadrian * vap doesn't confuse later code which only parses the beacon 901219961Sadrian * field and updates hardware when said field changes. 902219961Sadrian * Otherwise the hardware is programmed with defaults, not what 903219961Sadrian * the beacon actually announces. 904219961Sadrian */ 905219961Sadrian wme->wme_wmeChanParams.cap_info = 0; 906219961Sadrian 907219961Sadrian /* 908170530Ssam * Select mode; we can be called early in which case we 909170530Ssam * always use auto mode. We know we'll be called when 910170530Ssam * entering the RUN state with bsschan setup properly 911170530Ssam * so state will eventually get set correctly 912170530Ssam */ 913170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 914170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 915170530Ssam else 916170530Ssam mode = IEEE80211_MODE_AUTO; 917138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 918138568Ssam switch (i) { 919138568Ssam case WME_AC_BK: 920170530Ssam pPhyParam = &phyParamForAC_BK[mode]; 921170530Ssam pBssPhyParam = &phyParamForAC_BK[mode]; 922138568Ssam break; 923138568Ssam case WME_AC_VI: 924170530Ssam pPhyParam = &phyParamForAC_VI[mode]; 925170530Ssam pBssPhyParam = &bssPhyParamForAC_VI[mode]; 926138568Ssam break; 927138568Ssam case WME_AC_VO: 928170530Ssam pPhyParam = &phyParamForAC_VO[mode]; 929170530Ssam pBssPhyParam = &bssPhyParamForAC_VO[mode]; 930138568Ssam break; 931138568Ssam case WME_AC_BE: 932138568Ssam default: 933170530Ssam pPhyParam = &phyParamForAC_BE[mode]; 934170530Ssam pBssPhyParam = &bssPhyParamForAC_BE[mode]; 935138568Ssam break; 936138568Ssam } 937138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 938138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 939188863Ssam setwmeparams(vap, "chan", i, wmep, pPhyParam); 940138568Ssam } else { 941188863Ssam setwmeparams(vap, "chan", i, wmep, pBssPhyParam); 942138568Ssam } 943138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 944188863Ssam setwmeparams(vap, "bss ", i, wmep, pBssPhyParam); 945138568Ssam } 946138568Ssam /* NB: check ic_bss to avoid NULL deref on initial attach */ 947178354Ssam if (vap->iv_bss != NULL) { 948138568Ssam /* 949138568Ssam * Calculate agressive mode switching threshold based 950138568Ssam * on beacon interval. This doesn't need locking since 951138568Ssam * we're only called before entering the RUN state at 952138568Ssam * which point we start sending beacon frames. 953138568Ssam */ 954138568Ssam wme->wme_hipri_switch_thresh = 955178354Ssam (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100; 956188864Ssam wme->wme_flags &= ~WME_F_AGGRMODE; 957178354Ssam ieee80211_wme_updateparams(vap); 958138568Ssam } 959138568Ssam} 960138568Ssam 961178354Ssamvoid 962178354Ssamieee80211_wme_initparams(struct ieee80211vap *vap) 963178354Ssam{ 964178354Ssam struct ieee80211com *ic = vap->iv_ic; 965178354Ssam 966178354Ssam IEEE80211_LOCK(ic); 967178354Ssam ieee80211_wme_initparams_locked(vap); 968178354Ssam IEEE80211_UNLOCK(ic); 969178354Ssam} 970178354Ssam 971138568Ssam/* 972138568Ssam * Update WME parameters for ourself and the BSS. 973138568Ssam */ 974138568Ssamvoid 975178354Ssamieee80211_wme_updateparams_locked(struct ieee80211vap *vap) 976138568Ssam{ 977188863Ssam static const paramType aggrParam[IEEE80211_MODE_MAX] = { 978188780Ssam [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 }, 979188780Ssam [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 }, 980188780Ssam [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 }, 981188780Ssam [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 }, 982188780Ssam [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 }, 983188780Ssam [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 }, 984188780Ssam [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 }, 985188780Ssam [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 }, 986188782Ssam [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 }, 987188782Ssam [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 }, 988188780Ssam [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 989188780Ssam [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 990138568Ssam }; 991178354Ssam struct ieee80211com *ic = vap->iv_ic; 992138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 993138568Ssam const struct wmeParams *wmep; 994138568Ssam struct wmeParams *chanp, *bssp; 995170530Ssam enum ieee80211_phymode mode; 996138568Ssam int i; 997138568Ssam 998188863Ssam /* 999188863Ssam * Set up the channel access parameters for the physical 1000188863Ssam * device. First populate the configured settings. 1001188863Ssam */ 1002138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 1003138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[i]; 1004138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 1005138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 1006138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1007138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1008138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1009138568Ssam 1010138568Ssam chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 1011138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 1012138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 1013138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1014138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1015138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1016138568Ssam } 1017138568Ssam 1018138568Ssam /* 1019170530Ssam * Select mode; we can be called early in which case we 1020170530Ssam * always use auto mode. We know we'll be called when 1021170530Ssam * entering the RUN state with bsschan setup properly 1022170530Ssam * so state will eventually get set correctly 1023170530Ssam */ 1024170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 1025170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 1026170530Ssam else 1027170530Ssam mode = IEEE80211_MODE_AUTO; 1028170530Ssam 1029170530Ssam /* 1030138568Ssam * This implements agressive mode as found in certain 1031138568Ssam * vendors' AP's. When there is significant high 1032138568Ssam * priority (VI/VO) traffic in the BSS throttle back BE 1033138568Ssam * traffic by using conservative parameters. Otherwise 1034138568Ssam * BE uses agressive params to optimize performance of 1035138568Ssam * legacy/non-QoS traffic. 1036138568Ssam */ 1037178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP && 1038156524Ssam (wme->wme_flags & WME_F_AGGRMODE) != 0) || 1039178354Ssam (vap->iv_opmode == IEEE80211_M_STA && 1040178354Ssam (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0) || 1041178354Ssam (vap->iv_flags & IEEE80211_F_WME) == 0) { 1042138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1043138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1044138568Ssam 1045188863Ssam chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn; 1046138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 1047188863Ssam aggrParam[mode].logcwmin; 1048138568Ssam chanp->wmep_logcwmax = bssp->wmep_logcwmax = 1049188863Ssam aggrParam[mode].logcwmax; 1050138568Ssam chanp->wmep_txopLimit = bssp->wmep_txopLimit = 1051188863Ssam (vap->iv_flags & IEEE80211_F_BURST) ? 1052188863Ssam aggrParam[mode].txopLimit : 0; 1053178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1054188863Ssam "update %s (chan+bss) [acm %u aifsn %u logcwmin %u " 1055188863Ssam "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE], 1056188863Ssam chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin, 1057188863Ssam chanp->wmep_logcwmax, chanp->wmep_txopLimit); 1058138568Ssam } 1059138568Ssam 1060178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1061156524Ssam ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 1062188780Ssam static const uint8_t logCwMin[IEEE80211_MODE_MAX] = { 1063188780Ssam [IEEE80211_MODE_AUTO] = 3, 1064188780Ssam [IEEE80211_MODE_11A] = 3, 1065188780Ssam [IEEE80211_MODE_11B] = 4, 1066188780Ssam [IEEE80211_MODE_11G] = 3, 1067188780Ssam [IEEE80211_MODE_FH] = 4, 1068188780Ssam [IEEE80211_MODE_TURBO_A] = 3, 1069188780Ssam [IEEE80211_MODE_TURBO_G] = 3, 1070188780Ssam [IEEE80211_MODE_STURBO_A] = 3, 1071188782Ssam [IEEE80211_MODE_HALF] = 3, 1072188782Ssam [IEEE80211_MODE_QUARTER] = 3, 1073188780Ssam [IEEE80211_MODE_11NA] = 3, 1074188780Ssam [IEEE80211_MODE_11NG] = 3, 1075138568Ssam }; 1076138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1077138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1078138568Ssam 1079170530Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode]; 1080178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1081188863Ssam "update %s (chan+bss) logcwmin %u\n", 1082188863Ssam ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin); 1083138568Ssam } 1084178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */ 1085138568Ssam /* 1086138568Ssam * Arrange for a beacon update and bump the parameter 1087138568Ssam * set number so associated stations load the new values. 1088138568Ssam */ 1089138568Ssam wme->wme_bssChanParams.cap_info = 1090138568Ssam (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 1091178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME); 1092138568Ssam } 1093138568Ssam 1094138568Ssam wme->wme_update(ic); 1095138568Ssam 1096178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1097188863Ssam "%s: WME params updated, cap_info 0x%x\n", __func__, 1098188863Ssam vap->iv_opmode == IEEE80211_M_STA ? 1099188863Ssam wme->wme_wmeChanParams.cap_info : 1100188863Ssam wme->wme_bssChanParams.cap_info); 1101138568Ssam} 1102138568Ssam 1103138568Ssamvoid 1104178354Ssamieee80211_wme_updateparams(struct ieee80211vap *vap) 1105138568Ssam{ 1106178354Ssam struct ieee80211com *ic = vap->iv_ic; 1107138568Ssam 1108138568Ssam if (ic->ic_caps & IEEE80211_C_WME) { 1109178354Ssam IEEE80211_LOCK(ic); 1110178354Ssam ieee80211_wme_updateparams_locked(vap); 1111178354Ssam IEEE80211_UNLOCK(ic); 1112138568Ssam } 1113138568Ssam} 1114138568Ssam 1115178354Ssamstatic void 1116178354Ssamparent_updown(void *arg, int npending) 1117178354Ssam{ 1118178354Ssam struct ifnet *parent = arg; 1119178354Ssam 1120178354Ssam parent->if_ioctl(parent, SIOCSIFFLAGS, NULL); 1121178354Ssam} 1122178354Ssam 1123191746Sthompsastatic void 1124191746Sthompsaupdate_mcast(void *arg, int npending) 1125191746Sthompsa{ 1126191746Sthompsa struct ieee80211com *ic = arg; 1127191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1128191746Sthompsa 1129191746Sthompsa ic->ic_update_mcast(parent); 1130191746Sthompsa} 1131191746Sthompsa 1132191746Sthompsastatic void 1133191746Sthompsaupdate_promisc(void *arg, int npending) 1134191746Sthompsa{ 1135191746Sthompsa struct ieee80211com *ic = arg; 1136191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1137191746Sthompsa 1138191746Sthompsa ic->ic_update_promisc(parent); 1139191746Sthompsa} 1140191746Sthompsa 1141191746Sthompsastatic void 1142191746Sthompsaupdate_channel(void *arg, int npending) 1143191746Sthompsa{ 1144191746Sthompsa struct ieee80211com *ic = arg; 1145191746Sthompsa 1146191746Sthompsa ic->ic_set_channel(ic); 1147192468Ssam ieee80211_radiotap_chan_change(ic); 1148191746Sthompsa} 1149191746Sthompsa 1150170530Ssam/* 1151188533Sthompsa * Block until the parent is in a known state. This is 1152188533Sthompsa * used after any operations that dispatch a task (e.g. 1153188533Sthompsa * to auto-configure the parent device up/down). 1154188533Sthompsa */ 1155188533Sthompsavoid 1156188533Sthompsaieee80211_waitfor_parent(struct ieee80211com *ic) 1157188533Sthompsa{ 1158191746Sthompsa taskqueue_block(ic->ic_tq); 1159191746Sthompsa ieee80211_draintask(ic, &ic->ic_parent_task); 1160191746Sthompsa ieee80211_draintask(ic, &ic->ic_mcast_task); 1161191746Sthompsa ieee80211_draintask(ic, &ic->ic_promisc_task); 1162191746Sthompsa ieee80211_draintask(ic, &ic->ic_chan_task); 1163191746Sthompsa ieee80211_draintask(ic, &ic->ic_bmiss_task); 1164191746Sthompsa taskqueue_unblock(ic->ic_tq); 1165188533Sthompsa} 1166188533Sthompsa 1167188533Sthompsa/* 1168178354Ssam * Start a vap running. If this is the first vap to be 1169178354Ssam * set running on the underlying device then we 1170178354Ssam * automatically bring the device up. 1171170530Ssam */ 1172178354Ssamvoid 1173178354Ssamieee80211_start_locked(struct ieee80211vap *vap) 1174170530Ssam{ 1175178354Ssam struct ifnet *ifp = vap->iv_ifp; 1176178354Ssam struct ieee80211com *ic = vap->iv_ic; 1177178354Ssam struct ifnet *parent = ic->ic_ifp; 1178170530Ssam 1179178354Ssam IEEE80211_LOCK_ASSERT(ic); 1180178354Ssam 1181178354Ssam IEEE80211_DPRINTF(vap, 1182170530Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1183178354Ssam "start running, %d vaps running\n", ic->ic_nrunning); 1184170530Ssam 1185178354Ssam if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1186178354Ssam /* 1187178354Ssam * Mark us running. Note that it's ok to do this first; 1188178354Ssam * if we need to bring the parent device up we defer that 1189178354Ssam * to avoid dropping the com lock. We expect the device 1190178354Ssam * to respond to being marked up by calling back into us 1191178354Ssam * through ieee80211_start_all at which point we'll come 1192178354Ssam * back in here and complete the work. 1193178354Ssam */ 1194178354Ssam ifp->if_drv_flags |= IFF_DRV_RUNNING; 1195178354Ssam /* 1196178354Ssam * We are not running; if this we are the first vap 1197178354Ssam * to be brought up auto-up the parent if necessary. 1198178354Ssam */ 1199178354Ssam if (ic->ic_nrunning++ == 0 && 1200178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1201178354Ssam IEEE80211_DPRINTF(vap, 1202178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1203178354Ssam "%s: up parent %s\n", __func__, parent->if_xname); 1204178354Ssam parent->if_flags |= IFF_UP; 1205191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1206178354Ssam return; 1207178354Ssam } 1208178354Ssam } 1209170530Ssam /* 1210178354Ssam * If the parent is up and running, then kick the 1211178354Ssam * 802.11 state machine as appropriate. 1212170530Ssam */ 1213178354Ssam if ((parent->if_drv_flags & IFF_DRV_RUNNING) && 1214178354Ssam vap->iv_roaming != IEEE80211_ROAMING_MANUAL) { 1215178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 1216178354Ssam#if 0 1217178354Ssam /* XXX bypasses scan too easily; disable for now */ 1218178354Ssam /* 1219178354Ssam * Try to be intelligent about clocking the state 1220178354Ssam * machine. If we're currently in RUN state then 1221178354Ssam * we should be able to apply any new state/parameters 1222178354Ssam * simply by re-associating. Otherwise we need to 1223178354Ssam * re-scan to select an appropriate ap. 1224178354Ssam */ 1225178354Ssam if (vap->iv_state >= IEEE80211_S_RUN) 1226178354Ssam ieee80211_new_state_locked(vap, 1227178354Ssam IEEE80211_S_ASSOC, 1); 1228178354Ssam else 1229178354Ssam#endif 1230178354Ssam ieee80211_new_state_locked(vap, 1231178354Ssam IEEE80211_S_SCAN, 0); 1232170530Ssam } else { 1233170530Ssam /* 1234178354Ssam * For monitor+wds mode there's nothing to do but 1235178354Ssam * start running. Otherwise if this is the first 1236170530Ssam * vap to be brought up, start a scan which may be 1237170530Ssam * preempted if the station is locked to a particular 1238170530Ssam * channel. 1239170530Ssam */ 1240191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_REINIT; 1241178354Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR || 1242178354Ssam vap->iv_opmode == IEEE80211_M_WDS) 1243178354Ssam ieee80211_new_state_locked(vap, 1244178354Ssam IEEE80211_S_RUN, -1); 1245178354Ssam else 1246178354Ssam ieee80211_new_state_locked(vap, 1247178354Ssam IEEE80211_S_SCAN, 0); 1248170530Ssam } 1249170530Ssam } 1250170530Ssam} 1251170530Ssam 1252170530Ssam/* 1253178354Ssam * Start a single vap. 1254178354Ssam */ 1255178354Ssamvoid 1256178354Ssamieee80211_init(void *arg) 1257178354Ssam{ 1258178354Ssam struct ieee80211vap *vap = arg; 1259178354Ssam 1260193348Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1261193348Ssam "%s\n", __func__); 1262178354Ssam 1263193348Ssam IEEE80211_LOCK(vap->iv_ic); 1264193348Ssam ieee80211_start_locked(vap); 1265193348Ssam IEEE80211_UNLOCK(vap->iv_ic); 1266178354Ssam} 1267178354Ssam 1268178354Ssam/* 1269178354Ssam * Start all runnable vap's on a device. 1270178354Ssam */ 1271178354Ssamvoid 1272178354Ssamieee80211_start_all(struct ieee80211com *ic) 1273178354Ssam{ 1274178354Ssam struct ieee80211vap *vap; 1275178354Ssam 1276178354Ssam IEEE80211_LOCK(ic); 1277178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1278178354Ssam struct ifnet *ifp = vap->iv_ifp; 1279178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1280178354Ssam ieee80211_start_locked(vap); 1281178354Ssam } 1282178354Ssam IEEE80211_UNLOCK(ic); 1283178354Ssam} 1284178354Ssam 1285178354Ssam/* 1286178354Ssam * Stop a vap. We force it down using the state machine 1287178354Ssam * then mark it's ifnet not running. If this is the last 1288178354Ssam * vap running on the underlying device then we close it 1289178354Ssam * too to insure it will be properly initialized when the 1290178354Ssam * next vap is brought up. 1291178354Ssam */ 1292178354Ssamvoid 1293178354Ssamieee80211_stop_locked(struct ieee80211vap *vap) 1294178354Ssam{ 1295178354Ssam struct ieee80211com *ic = vap->iv_ic; 1296178354Ssam struct ifnet *ifp = vap->iv_ifp; 1297178354Ssam struct ifnet *parent = ic->ic_ifp; 1298178354Ssam 1299178354Ssam IEEE80211_LOCK_ASSERT(ic); 1300178354Ssam 1301178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1302178354Ssam "stop running, %d vaps running\n", ic->ic_nrunning); 1303178354Ssam 1304178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1); 1305178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1306178354Ssam ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */ 1307178354Ssam if (--ic->ic_nrunning == 0 && 1308178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING)) { 1309178354Ssam IEEE80211_DPRINTF(vap, 1310178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1311178354Ssam "down parent %s\n", parent->if_xname); 1312178354Ssam parent->if_flags &= ~IFF_UP; 1313191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1314178354Ssam } 1315178354Ssam } 1316178354Ssam} 1317178354Ssam 1318178354Ssamvoid 1319178354Ssamieee80211_stop(struct ieee80211vap *vap) 1320178354Ssam{ 1321178354Ssam struct ieee80211com *ic = vap->iv_ic; 1322178354Ssam 1323178354Ssam IEEE80211_LOCK(ic); 1324178354Ssam ieee80211_stop_locked(vap); 1325178354Ssam IEEE80211_UNLOCK(ic); 1326178354Ssam} 1327178354Ssam 1328178354Ssam/* 1329178354Ssam * Stop all vap's running on a device. 1330178354Ssam */ 1331178354Ssamvoid 1332178354Ssamieee80211_stop_all(struct ieee80211com *ic) 1333178354Ssam{ 1334178354Ssam struct ieee80211vap *vap; 1335178354Ssam 1336178354Ssam IEEE80211_LOCK(ic); 1337178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1338178354Ssam struct ifnet *ifp = vap->iv_ifp; 1339178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1340178354Ssam ieee80211_stop_locked(vap); 1341178354Ssam } 1342178354Ssam IEEE80211_UNLOCK(ic); 1343188533Sthompsa 1344188533Sthompsa ieee80211_waitfor_parent(ic); 1345178354Ssam} 1346178354Ssam 1347178354Ssam/* 1348179391Ssam * Stop all vap's running on a device and arrange 1349179391Ssam * for those that were running to be resumed. 1350179391Ssam */ 1351179391Ssamvoid 1352179391Ssamieee80211_suspend_all(struct ieee80211com *ic) 1353179391Ssam{ 1354179391Ssam struct ieee80211vap *vap; 1355179391Ssam 1356179391Ssam IEEE80211_LOCK(ic); 1357179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1358179391Ssam struct ifnet *ifp = vap->iv_ifp; 1359179391Ssam if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */ 1360179391Ssam vap->iv_flags_ext |= IEEE80211_FEXT_RESUME; 1361179391Ssam ieee80211_stop_locked(vap); 1362179391Ssam } 1363179391Ssam } 1364179391Ssam IEEE80211_UNLOCK(ic); 1365188533Sthompsa 1366188533Sthompsa ieee80211_waitfor_parent(ic); 1367179391Ssam} 1368179391Ssam 1369179391Ssam/* 1370179391Ssam * Start all vap's marked for resume. 1371179391Ssam */ 1372179391Ssamvoid 1373179391Ssamieee80211_resume_all(struct ieee80211com *ic) 1374179391Ssam{ 1375179391Ssam struct ieee80211vap *vap; 1376179391Ssam 1377179391Ssam IEEE80211_LOCK(ic); 1378179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1379179391Ssam struct ifnet *ifp = vap->iv_ifp; 1380179391Ssam if (!IFNET_IS_UP_RUNNING(ifp) && 1381179391Ssam (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) { 1382179391Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME; 1383179391Ssam ieee80211_start_locked(vap); 1384179391Ssam } 1385179391Ssam } 1386179391Ssam IEEE80211_UNLOCK(ic); 1387179391Ssam} 1388179391Ssam 1389153349Ssamvoid 1390153349Ssamieee80211_beacon_miss(struct ieee80211com *ic) 1391153349Ssam{ 1392191746Sthompsa IEEE80211_LOCK(ic); 1393191746Sthompsa if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1394191746Sthompsa /* Process in a taskq, the handler may reenter the driver */ 1395191746Sthompsa ieee80211_runtask(ic, &ic->ic_bmiss_task); 1396191746Sthompsa } 1397191746Sthompsa IEEE80211_UNLOCK(ic); 1398191746Sthompsa} 1399191746Sthompsa 1400191746Sthompsastatic void 1401191746Sthompsabeacon_miss(void *arg, int npending) 1402191746Sthompsa{ 1403191746Sthompsa struct ieee80211com *ic = arg; 1404178354Ssam struct ieee80211vap *vap; 1405153349Ssam 1406178354Ssam /* XXX locking */ 1407178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1408153349Ssam /* 1409178354Ssam * We only pass events through for sta vap's in RUN state; 1410178354Ssam * may be too restrictive but for now this saves all the 1411178354Ssam * handlers duplicating these checks. 1412153349Ssam */ 1413178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 1414193439Ssam vap->iv_state >= IEEE80211_S_RUN && 1415178354Ssam vap->iv_bmiss != NULL) 1416178354Ssam vap->iv_bmiss(vap); 1417153349Ssam } 1418153349Ssam} 1419153349Ssam 1420191746Sthompsastatic void 1421191746Sthompsabeacon_swmiss(void *arg, int npending) 1422191746Sthompsa{ 1423191746Sthompsa struct ieee80211vap *vap = arg; 1424191746Sthompsa 1425191746Sthompsa if (vap->iv_state != IEEE80211_S_RUN) 1426191746Sthompsa return; 1427191746Sthompsa 1428191746Sthompsa /* XXX Call multiple times if npending > zero? */ 1429191746Sthompsa vap->iv_bmiss(vap); 1430191746Sthompsa} 1431191746Sthompsa 1432154736Ssam/* 1433154736Ssam * Software beacon miss handling. Check if any beacons 1434154736Ssam * were received in the last period. If not post a 1435154736Ssam * beacon miss; otherwise reset the counter. 1436154736Ssam */ 1437178354Ssamvoid 1438154736Ssamieee80211_swbmiss(void *arg) 1439154736Ssam{ 1440178354Ssam struct ieee80211vap *vap = arg; 1441179217Ssam struct ieee80211com *ic = vap->iv_ic; 1442154736Ssam 1443179217Ssam /* XXX sleep state? */ 1444179217Ssam KASSERT(vap->iv_state == IEEE80211_S_RUN, 1445179217Ssam ("wrong state %d", vap->iv_state)); 1446179217Ssam 1447179217Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1448179217Ssam /* 1449179217Ssam * If scanning just ignore and reset state. If we get a 1450179217Ssam * bmiss after coming out of scan because we haven't had 1451179217Ssam * time to receive a beacon then we should probe the AP 1452179217Ssam * before posting a real bmiss (unless iv_bmiss_max has 1453179217Ssam * been artifiically lowered). A cleaner solution might 1454179217Ssam * be to disable the timer on scan start/end but to handle 1455179217Ssam * case of multiple sta vap's we'd need to disable the 1456179217Ssam * timers of all affected vap's. 1457179217Ssam */ 1458179217Ssam vap->iv_swbmiss_count = 0; 1459179217Ssam } else if (vap->iv_swbmiss_count == 0) { 1460178354Ssam if (vap->iv_bmiss != NULL) 1461191746Sthompsa ieee80211_runtask(ic, &vap->iv_swbmiss_task); 1462154736Ssam } else 1463178354Ssam vap->iv_swbmiss_count = 0; 1464178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 1465178354Ssam ieee80211_swbmiss, vap); 1466154736Ssam} 1467154736Ssam 1468178354Ssam/* 1469178354Ssam * Start an 802.11h channel switch. We record the parameters, 1470178354Ssam * mark the operation pending, notify each vap through the 1471178354Ssam * beacon update mechanism so it can update the beacon frame 1472178354Ssam * contents, and then switch vap's to CSA state to block outbound 1473178354Ssam * traffic. Devices that handle CSA directly can use the state 1474178354Ssam * switch to do the right thing so long as they call 1475178354Ssam * ieee80211_csa_completeswitch when it's time to complete the 1476178354Ssam * channel change. Devices that depend on the net80211 layer can 1477178354Ssam * use ieee80211_beacon_update to handle the countdown and the 1478178354Ssam * channel switch. 1479178354Ssam */ 1480178354Ssamvoid 1481178354Ssamieee80211_csa_startswitch(struct ieee80211com *ic, 1482178354Ssam struct ieee80211_channel *c, int mode, int count) 1483178354Ssam{ 1484178354Ssam struct ieee80211vap *vap; 1485178354Ssam 1486178354Ssam IEEE80211_LOCK_ASSERT(ic); 1487178354Ssam 1488178354Ssam ic->ic_csa_newchan = c; 1489193439Ssam ic->ic_csa_mode = mode; 1490178354Ssam ic->ic_csa_count = count; 1491178354Ssam ic->ic_flags |= IEEE80211_F_CSAPENDING; 1492178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1493178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP || 1494195618Srpaulo vap->iv_opmode == IEEE80211_M_IBSS || 1495195618Srpaulo vap->iv_opmode == IEEE80211_M_MBSS) 1496178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA); 1497178354Ssam /* switch to CSA state to block outbound traffic */ 1498178354Ssam if (vap->iv_state == IEEE80211_S_RUN) 1499178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0); 1500178354Ssam } 1501178354Ssam ieee80211_notify_csa(ic, c, mode, count); 1502178354Ssam} 1503178354Ssam 1504224220Sadrian/* 1505224220Sadrian * Complete the channel switch by transitioning all CSA VAPs to RUN. 1506224220Sadrian * This is called by both the completion and cancellation functions 1507224220Sadrian * so each VAP is placed back in the RUN state and can thus transmit. 1508224220Sadrian */ 1509193439Ssamstatic void 1510193439Ssamcsa_completeswitch(struct ieee80211com *ic) 1511193439Ssam{ 1512193439Ssam struct ieee80211vap *vap; 1513193439Ssam 1514193439Ssam ic->ic_csa_newchan = NULL; 1515193439Ssam ic->ic_flags &= ~IEEE80211_F_CSAPENDING; 1516193439Ssam 1517193439Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1518193439Ssam if (vap->iv_state == IEEE80211_S_CSA) 1519193439Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1520193439Ssam} 1521193439Ssam 1522178354Ssam/* 1523178354Ssam * Complete an 802.11h channel switch started by ieee80211_csa_startswitch. 1524178354Ssam * We clear state and move all vap's in CSA state to RUN state 1525178354Ssam * so they can again transmit. 1526224220Sadrian * 1527224220Sadrian * Although this may not be completely correct, update the BSS channel 1528224220Sadrian * for each VAP to the newly configured channel. The setcurchan sets 1529224220Sadrian * the current operating channel for the interface (so the radio does 1530224220Sadrian * switch over) but the VAP BSS isn't updated, leading to incorrectly 1531224220Sadrian * reported information via ioctl. 1532178354Ssam */ 1533178354Ssamvoid 1534178354Ssamieee80211_csa_completeswitch(struct ieee80211com *ic) 1535178354Ssam{ 1536224222Sadrian struct ieee80211vap *vap; 1537224222Sadrian 1538178354Ssam IEEE80211_LOCK_ASSERT(ic); 1539178354Ssam 1540178354Ssam KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending")); 1541178354Ssam 1542178354Ssam ieee80211_setcurchan(ic, ic->ic_csa_newchan); 1543224220Sadrian TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1544224220Sadrian if (vap->iv_state == IEEE80211_S_CSA) 1545224220Sadrian vap->iv_bss->ni_chan = ic->ic_curchan; 1546224220Sadrian 1547193439Ssam csa_completeswitch(ic); 1548193439Ssam} 1549178354Ssam 1550193439Ssam/* 1551193439Ssam * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch. 1552193439Ssam * We clear state and move all vap's in CSA state to RUN state 1553193439Ssam * so they can again transmit. 1554193439Ssam */ 1555193439Ssamvoid 1556193439Ssamieee80211_csa_cancelswitch(struct ieee80211com *ic) 1557193439Ssam{ 1558193439Ssam IEEE80211_LOCK_ASSERT(ic); 1559193439Ssam 1560193439Ssam csa_completeswitch(ic); 1561178354Ssam} 1562178354Ssam 1563178354Ssam/* 1564178354Ssam * Complete a DFS CAC started by ieee80211_dfs_cac_start. 1565178354Ssam * We clear state and move all vap's in CAC state to RUN state. 1566178354Ssam */ 1567178354Ssamvoid 1568178354Ssamieee80211_cac_completeswitch(struct ieee80211vap *vap0) 1569178354Ssam{ 1570178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1571178354Ssam struct ieee80211vap *vap; 1572178354Ssam 1573178354Ssam IEEE80211_LOCK(ic); 1574178354Ssam /* 1575178354Ssam * Complete CAC state change for lead vap first; then 1576178354Ssam * clock all the other vap's waiting. 1577178354Ssam */ 1578178354Ssam KASSERT(vap0->iv_state == IEEE80211_S_CAC, 1579178354Ssam ("wrong state %d", vap0->iv_state)); 1580178354Ssam ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0); 1581178354Ssam 1582178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1583178354Ssam if (vap->iv_state == IEEE80211_S_CAC) 1584178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1585178354Ssam IEEE80211_UNLOCK(ic); 1586178354Ssam} 1587178354Ssam 1588178354Ssam/* 1589178354Ssam * Force all vap's other than the specified vap to the INIT state 1590178354Ssam * and mark them as waiting for a scan to complete. These vaps 1591178354Ssam * will be brought up when the scan completes and the scanning vap 1592178354Ssam * reaches RUN state by wakeupwaiting. 1593178354Ssam */ 1594154736Ssamstatic void 1595178354Ssammarkwaiting(struct ieee80211vap *vap0) 1596147765Ssam{ 1597178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1598178354Ssam struct ieee80211vap *vap; 1599147765Ssam 1600178354Ssam IEEE80211_LOCK_ASSERT(ic); 1601178354Ssam 1602191746Sthompsa /* 1603191746Sthompsa * A vap list entry can not disappear since we are running on the 1604191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1605191746Sthompsa * change task. 1606191746Sthompsa */ 1607178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1608178354Ssam if (vap == vap0) 1609178354Ssam continue; 1610178354Ssam if (vap->iv_state != IEEE80211_S_INIT) { 1611191746Sthompsa /* NB: iv_newstate may drop the lock */ 1612178354Ssam vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 1613178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1614178354Ssam } 1615147765Ssam } 1616147765Ssam} 1617147765Ssam 1618178354Ssam/* 1619178354Ssam * Wakeup all vap's waiting for a scan to complete. This is the 1620178354Ssam * companion to markwaiting (above) and is used to coordinate 1621178354Ssam * multiple vaps scanning. 1622191746Sthompsa * This is called from the state taskqueue. 1623178354Ssam */ 1624147765Ssamstatic void 1625178354Ssamwakeupwaiting(struct ieee80211vap *vap0) 1626147765Ssam{ 1627178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1628178354Ssam struct ieee80211vap *vap; 1629147765Ssam 1630178354Ssam IEEE80211_LOCK_ASSERT(ic); 1631178354Ssam 1632191746Sthompsa /* 1633191746Sthompsa * A vap list entry can not disappear since we are running on the 1634191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1635191746Sthompsa * change task. 1636191746Sthompsa */ 1637178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1638178354Ssam if (vap == vap0) 1639178354Ssam continue; 1640178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) { 1641178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1642178354Ssam /* NB: sta's cannot go INIT->RUN */ 1643191746Sthompsa /* NB: iv_newstate may drop the lock */ 1644178354Ssam vap->iv_newstate(vap, 1645178354Ssam vap->iv_opmode == IEEE80211_M_STA ? 1646178354Ssam IEEE80211_S_SCAN : IEEE80211_S_RUN, 0); 1647178354Ssam } 1648178354Ssam } 1649147765Ssam} 1650147765Ssam 1651170530Ssam/* 1652178354Ssam * Handle post state change work common to all operating modes. 1653170530Ssam */ 1654170530Ssamstatic void 1655191746Sthompsaieee80211_newstate_cb(void *xvap, int npending) 1656170530Ssam{ 1657191746Sthompsa struct ieee80211vap *vap = xvap; 1658178354Ssam struct ieee80211com *ic = vap->iv_ic; 1659191746Sthompsa enum ieee80211_state nstate, ostate; 1660191746Sthompsa int arg, rc; 1661178354Ssam 1662191746Sthompsa IEEE80211_LOCK(ic); 1663191746Sthompsa nstate = vap->iv_nstate; 1664191746Sthompsa arg = vap->iv_nstate_arg; 1665178354Ssam 1666191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) { 1667191746Sthompsa /* 1668191746Sthompsa * We have been requested to drop back to the INIT before 1669191746Sthompsa * proceeding to the new state. 1670191746Sthompsa */ 1671191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1672191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1673191746Sthompsa ieee80211_state_name[vap->iv_state], 1674191746Sthompsa ieee80211_state_name[IEEE80211_S_INIT], arg); 1675191746Sthompsa vap->iv_newstate(vap, IEEE80211_S_INIT, arg); 1676191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT; 1677191746Sthompsa } 1678191746Sthompsa 1679191746Sthompsa ostate = vap->iv_state; 1680191746Sthompsa if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) { 1681191746Sthompsa /* 1682191746Sthompsa * SCAN was forced; e.g. on beacon miss. Force other running 1683191746Sthompsa * vap's to INIT state and mark them as waiting for the scan to 1684191746Sthompsa * complete. This insures they don't interfere with our 1685191746Sthompsa * scanning. Since we are single threaded the vaps can not 1686191746Sthompsa * transition again while we are executing. 1687191746Sthompsa * 1688191746Sthompsa * XXX not always right, assumes ap follows sta 1689191746Sthompsa */ 1690191746Sthompsa markwaiting(vap); 1691191746Sthompsa } 1692178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1693191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1694191746Sthompsa ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); 1695178354Ssam 1696191746Sthompsa rc = vap->iv_newstate(vap, nstate, arg); 1697191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT; 1698191746Sthompsa if (rc != 0) { 1699191746Sthompsa /* State transition failed */ 1700191746Sthompsa KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred")); 1701191746Sthompsa KASSERT(nstate != IEEE80211_S_INIT, 1702191746Sthompsa ("INIT state change failed")); 1703191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1704191746Sthompsa "%s: %s returned error %d\n", __func__, 1705191746Sthompsa ieee80211_state_name[nstate], rc); 1706191746Sthompsa goto done; 1707191746Sthompsa } 1708191746Sthompsa 1709191746Sthompsa /* No actual transition, skip post processing */ 1710191746Sthompsa if (ostate == nstate) 1711191746Sthompsa goto done; 1712191746Sthompsa 1713178354Ssam if (nstate == IEEE80211_S_RUN) { 1714178354Ssam /* 1715178354Ssam * OACTIVE may be set on the vap if the upper layer 1716178354Ssam * tried to transmit (e.g. IPv6 NDP) before we reach 1717178354Ssam * RUN state. Clear it and restart xmit. 1718178354Ssam * 1719178354Ssam * Note this can also happen as a result of SLEEP->RUN 1720178354Ssam * (i.e. coming out of power save mode). 1721178354Ssam */ 1722178354Ssam vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1723178354Ssam if_start(vap->iv_ifp); 1724178354Ssam 1725178354Ssam /* bring up any vaps waiting on us */ 1726178354Ssam wakeupwaiting(vap); 1727178354Ssam } else if (nstate == IEEE80211_S_INIT) { 1728178354Ssam /* 1729178354Ssam * Flush the scan cache if we did the last scan (XXX?) 1730178354Ssam * and flush any frames on send queues from this vap. 1731178354Ssam * Note the mgt q is used only for legacy drivers and 1732178354Ssam * will go away shortly. 1733178354Ssam */ 1734178354Ssam ieee80211_scan_flush(vap); 1735178354Ssam 1736178354Ssam /* XXX NB: cast for altq */ 1737178354Ssam ieee80211_flush_ifq((struct ifqueue *)&ic->ic_ifp->if_snd, vap); 1738170530Ssam } 1739191746Sthompsadone: 1740191746Sthompsa IEEE80211_UNLOCK(ic); 1741170530Ssam} 1742170530Ssam 1743178354Ssam/* 1744178354Ssam * Public interface for initiating a state machine change. 1745178354Ssam * This routine single-threads the request and coordinates 1746178354Ssam * the scheduling of multiple vaps for the purpose of selecting 1747178354Ssam * an operating channel. Specifically the following scenarios 1748178354Ssam * are handled: 1749178354Ssam * o only one vap can be selecting a channel so on transition to 1750178354Ssam * SCAN state if another vap is already scanning then 1751178354Ssam * mark the caller for later processing and return without 1752178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1753178354Ssam * o only one vap can be doing CAC of a channel so on transition to 1754178354Ssam * CAC state if another vap is already scanning for radar then 1755178354Ssam * mark the caller for later processing and return without 1756178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1757178354Ssam * o if another vap is already running when a request is made 1758178354Ssam * to SCAN then an operating channel has been chosen; bypass 1759178354Ssam * the scan and just join the channel 1760178354Ssam * 1761178354Ssam * Note that the state change call is done through the iv_newstate 1762178354Ssam * method pointer so any driver routine gets invoked. The driver 1763178354Ssam * will normally call back into operating mode-specific 1764178354Ssam * ieee80211_newstate routines (below) unless it needs to completely 1765178354Ssam * bypass the state machine (e.g. because the firmware has it's 1766178354Ssam * own idea how things should work). Bypassing the net80211 layer 1767178354Ssam * is usually a mistake and indicates lack of proper integration 1768178354Ssam * with the net80211 layer. 1769178354Ssam */ 1770117811Ssamstatic int 1771178354Ssamieee80211_new_state_locked(struct ieee80211vap *vap, 1772178354Ssam enum ieee80211_state nstate, int arg) 1773116742Ssam{ 1774178354Ssam struct ieee80211com *ic = vap->iv_ic; 1775178354Ssam struct ieee80211vap *vp; 1776117811Ssam enum ieee80211_state ostate; 1777191746Sthompsa int nrunning, nscanning; 1778116742Ssam 1779178354Ssam IEEE80211_LOCK_ASSERT(ic); 1780178354Ssam 1781191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) { 1782191746Sthompsa if (vap->iv_nstate == IEEE80211_S_INIT) { 1783191746Sthompsa /* 1784191746Sthompsa * XXX The vap is being stopped, do no allow any other 1785191746Sthompsa * state changes until this is completed. 1786191746Sthompsa */ 1787191746Sthompsa return -1; 1788191768Sthompsa } else if (vap->iv_state != vap->iv_nstate) { 1789191746Sthompsa#if 0 1790191768Sthompsa /* Warn if the previous state hasn't completed. */ 1791191768Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1792191768Sthompsa "%s: pending %s -> %s transition lost\n", __func__, 1793191768Sthompsa ieee80211_state_name[vap->iv_state], 1794191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1795191746Sthompsa#else 1796191768Sthompsa /* XXX temporarily enable to identify issues */ 1797191768Sthompsa if_printf(vap->iv_ifp, 1798191768Sthompsa "%s: pending %s -> %s transition lost\n", 1799191768Sthompsa __func__, ieee80211_state_name[vap->iv_state], 1800191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1801191746Sthompsa#endif 1802191768Sthompsa } 1803191746Sthompsa } 1804191746Sthompsa 1805178354Ssam nrunning = nscanning = 0; 1806178354Ssam /* XXX can track this state instead of calculating */ 1807178354Ssam TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) { 1808178354Ssam if (vp != vap) { 1809178354Ssam if (vp->iv_state >= IEEE80211_S_RUN) 1810178354Ssam nrunning++; 1811178354Ssam /* XXX doesn't handle bg scan */ 1812178354Ssam /* NB: CAC+AUTH+ASSOC treated like SCAN */ 1813178354Ssam else if (vp->iv_state > IEEE80211_S_INIT) 1814178354Ssam nscanning++; 1815178354Ssam } 1816178354Ssam } 1817178354Ssam ostate = vap->iv_state; 1818178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1819178354Ssam "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__, 1820178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate], 1821178354Ssam nrunning, nscanning); 1822116742Ssam switch (nstate) { 1823116742Ssam case IEEE80211_S_SCAN: 1824178354Ssam if (ostate == IEEE80211_S_INIT) { 1825178354Ssam /* 1826178354Ssam * INIT -> SCAN happens on initial bringup. 1827178354Ssam */ 1828178354Ssam KASSERT(!(nscanning && nrunning), 1829178354Ssam ("%d scanning and %d running", nscanning, nrunning)); 1830178354Ssam if (nscanning) { 1831116742Ssam /* 1832178354Ssam * Someone is scanning, defer our state 1833178354Ssam * change until the work has completed. 1834116742Ssam */ 1835178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1836178354Ssam "%s: defer %s -> %s\n", 1837178354Ssam __func__, ieee80211_state_name[ostate], 1838178354Ssam ieee80211_state_name[nstate]); 1839178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1840191746Sthompsa return 0; 1841116742Ssam } 1842178354Ssam if (nrunning) { 1843170530Ssam /* 1844178354Ssam * Someone is operating; just join the channel 1845178354Ssam * they have chosen. 1846170530Ssam */ 1847178354Ssam /* XXX kill arg? */ 1848178354Ssam /* XXX check each opmode, adhoc? */ 1849178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) 1850178354Ssam nstate = IEEE80211_S_SCAN; 1851178354Ssam else 1852178354Ssam nstate = IEEE80211_S_RUN; 1853138568Ssam#ifdef IEEE80211_DEBUG 1854178354Ssam if (nstate != IEEE80211_S_SCAN) { 1855178354Ssam IEEE80211_DPRINTF(vap, 1856178354Ssam IEEE80211_MSG_STATE, 1857178354Ssam "%s: override, now %s -> %s\n", 1858178354Ssam __func__, 1859178354Ssam ieee80211_state_name[ostate], 1860178354Ssam ieee80211_state_name[nstate]); 1861178354Ssam } 1862138568Ssam#endif 1863170530Ssam } 1864116742Ssam } 1865178354Ssam break; 1866178354Ssam case IEEE80211_S_RUN: 1867178354Ssam if (vap->iv_opmode == IEEE80211_M_WDS && 1868178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) && 1869178354Ssam nscanning) { 1870154736Ssam /* 1871178354Ssam * Legacy WDS with someone else scanning; don't 1872178354Ssam * go online until that completes as we should 1873178354Ssam * follow the other vap to the channel they choose. 1874154736Ssam */ 1875178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1876178354Ssam "%s: defer %s -> %s (legacy WDS)\n", __func__, 1877178354Ssam ieee80211_state_name[ostate], 1878178354Ssam ieee80211_state_name[nstate]); 1879178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1880191746Sthompsa return 0; 1881154736Ssam } 1882178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1883178354Ssam IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) && 1884178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_DFS) && 1885178354Ssam !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) { 1886178354Ssam /* 1887178354Ssam * This is a DFS channel, transition to CAC state 1888178354Ssam * instead of RUN. This allows us to initiate 1889178354Ssam * Channel Availability Check (CAC) as specified 1890178354Ssam * by 11h/DFS. 1891178354Ssam */ 1892178354Ssam nstate = IEEE80211_S_CAC; 1893178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1894178354Ssam "%s: override %s -> %s (DFS)\n", __func__, 1895178354Ssam ieee80211_state_name[ostate], 1896178354Ssam ieee80211_state_name[nstate]); 1897138568Ssam } 1898116742Ssam break; 1899178354Ssam case IEEE80211_S_INIT: 1900191955Sthompsa /* cancel any scan in progress */ 1901191955Sthompsa ieee80211_cancel_scan(vap); 1902178354Ssam if (ostate == IEEE80211_S_INIT ) { 1903178354Ssam /* XXX don't believe this */ 1904178354Ssam /* INIT -> INIT. nothing to do */ 1905178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1906178354Ssam } 1907178354Ssam /* fall thru... */ 1908172058Ssam default: 1909172058Ssam break; 1910116742Ssam } 1911191746Sthompsa /* defer the state change to a thread */ 1912191746Sthompsa vap->iv_nstate = nstate; 1913191746Sthompsa vap->iv_nstate_arg = arg; 1914191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT; 1915191746Sthompsa ieee80211_runtask(ic, &vap->iv_nstate_task); 1916191746Sthompsa return EINPROGRESS; 1917116742Ssam} 1918178354Ssam 1919178354Ssamint 1920178354Ssamieee80211_new_state(struct ieee80211vap *vap, 1921178354Ssam enum ieee80211_state nstate, int arg) 1922178354Ssam{ 1923178354Ssam struct ieee80211com *ic = vap->iv_ic; 1924178354Ssam int rc; 1925178354Ssam 1926178354Ssam IEEE80211_LOCK(ic); 1927178354Ssam rc = ieee80211_new_state_locked(vap, nstate, arg); 1928178354Ssam IEEE80211_UNLOCK(ic); 1929178354Ssam return rc; 1930178354Ssam} 1931