ieee80211_proto.c revision 195618
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: head/sys/net80211/ieee80211_proto.c 195618 2009-07-11 15:02:45Z rpaulo $"); 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", 67172230Ssam "deauth", "action", "reserved#14", "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; 210188779Ssam if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) { 211188779Ssam vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS; 212188779Ssam vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS; 213188779Ssam } else { 214188779Ssam vap->iv_txparms[i].mgmtrate = 215188779Ssam rs->rs_rates[0] & IEEE80211_RATE_VAL; 216188779Ssam vap->iv_txparms[i].mcastrate = 217188779Ssam rs->rs_rates[0] & IEEE80211_RATE_VAL; 218188779Ssam } 219178354Ssam vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT; 220178354Ssam } 221178354Ssam vap->iv_roaming = IEEE80211_ROAMING_AUTO; 222178354Ssam 223178354Ssam vap->iv_update_beacon = null_update_beacon; 224178354Ssam vap->iv_deliver_data = ieee80211_deliver_data; 225178354Ssam 226178354Ssam /* attach support for operating mode */ 227178354Ssam ic->ic_vattach[vap->iv_opmode](vap); 228178354Ssam} 229178354Ssam 230178354Ssamvoid 231178354Ssamieee80211_proto_vdetach(struct ieee80211vap *vap) 232178354Ssam{ 233178354Ssam#define FREEAPPIE(ie) do { \ 234178354Ssam if (ie != NULL) \ 235186302Ssam free(ie, M_80211_NODE_IE); \ 236178354Ssam} while (0) 237178354Ssam /* 238178354Ssam * Detach operating mode module. 239178354Ssam */ 240178354Ssam if (vap->iv_opdetach != NULL) 241178354Ssam vap->iv_opdetach(vap); 242178354Ssam /* 243138568Ssam * This should not be needed as we detach when reseting 244138568Ssam * the state but be conservative here since the 245138568Ssam * authenticator may do things like spawn kernel threads. 246138568Ssam */ 247178354Ssam if (vap->iv_auth->ia_detach != NULL) 248178354Ssam vap->iv_auth->ia_detach(vap); 249138568Ssam /* 250138568Ssam * Detach any ACL'ator. 251138568Ssam */ 252178354Ssam if (vap->iv_acl != NULL) 253178354Ssam vap->iv_acl->iac_detach(vap); 254178354Ssam 255178354Ssam FREEAPPIE(vap->iv_appie_beacon); 256178354Ssam FREEAPPIE(vap->iv_appie_probereq); 257178354Ssam FREEAPPIE(vap->iv_appie_proberesp); 258178354Ssam FREEAPPIE(vap->iv_appie_assocreq); 259178354Ssam FREEAPPIE(vap->iv_appie_assocresp); 260178354Ssam FREEAPPIE(vap->iv_appie_wpa); 261178354Ssam#undef FREEAPPIE 262116742Ssam} 263116742Ssam 264138568Ssam/* 265138568Ssam * Simple-minded authenticator module support. 266138568Ssam */ 267138568Ssam 268138568Ssam#define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1) 269138568Ssam/* XXX well-known names */ 270138568Ssamstatic const char *auth_modnames[IEEE80211_AUTH_MAX] = { 271138568Ssam "wlan_internal", /* IEEE80211_AUTH_NONE */ 272138568Ssam "wlan_internal", /* IEEE80211_AUTH_OPEN */ 273138568Ssam "wlan_internal", /* IEEE80211_AUTH_SHARED */ 274138568Ssam "wlan_xauth", /* IEEE80211_AUTH_8021X */ 275138568Ssam "wlan_internal", /* IEEE80211_AUTH_AUTO */ 276138568Ssam "wlan_xauth", /* IEEE80211_AUTH_WPA */ 277138568Ssam}; 278138568Ssamstatic const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX]; 279138568Ssam 280138568Ssamstatic const struct ieee80211_authenticator auth_internal = { 281138568Ssam .ia_name = "wlan_internal", 282138568Ssam .ia_attach = NULL, 283138568Ssam .ia_detach = NULL, 284138568Ssam .ia_node_join = NULL, 285138568Ssam .ia_node_leave = NULL, 286138568Ssam}; 287138568Ssam 288138568Ssam/* 289138568Ssam * Setup internal authenticators once; they are never unregistered. 290138568Ssam */ 291138568Ssamstatic void 292138568Ssamieee80211_auth_setup(void) 293138568Ssam{ 294138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal); 295138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal); 296138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal); 297138568Ssam} 298138568SsamSYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL); 299138568Ssam 300138568Ssamconst struct ieee80211_authenticator * 301138568Ssamieee80211_authenticator_get(int auth) 302138568Ssam{ 303138568Ssam if (auth >= IEEE80211_AUTH_MAX) 304138568Ssam return NULL; 305138568Ssam if (authenticators[auth] == NULL) 306138568Ssam ieee80211_load_module(auth_modnames[auth]); 307138568Ssam return authenticators[auth]; 308138568Ssam} 309138568Ssam 310116742Ssamvoid 311138568Ssamieee80211_authenticator_register(int type, 312138568Ssam const struct ieee80211_authenticator *auth) 313116742Ssam{ 314138568Ssam if (type >= IEEE80211_AUTH_MAX) 315138568Ssam return; 316138568Ssam authenticators[type] = auth; 317138568Ssam} 318138568Ssam 319138568Ssamvoid 320138568Ssamieee80211_authenticator_unregister(int type) 321138568Ssam{ 322138568Ssam 323138568Ssam if (type >= IEEE80211_AUTH_MAX) 324138568Ssam return; 325138568Ssam authenticators[type] = NULL; 326138568Ssam} 327138568Ssam 328138568Ssam/* 329138568Ssam * Very simple-minded ACL module support. 330138568Ssam */ 331138568Ssam/* XXX just one for now */ 332138568Ssamstatic const struct ieee80211_aclator *acl = NULL; 333138568Ssam 334138568Ssamvoid 335138568Ssamieee80211_aclator_register(const struct ieee80211_aclator *iac) 336138568Ssam{ 337138568Ssam printf("wlan: %s acl policy registered\n", iac->iac_name); 338138568Ssam acl = iac; 339138568Ssam} 340138568Ssam 341138568Ssamvoid 342138568Ssamieee80211_aclator_unregister(const struct ieee80211_aclator *iac) 343138568Ssam{ 344138568Ssam if (acl == iac) 345138568Ssam acl = NULL; 346138568Ssam printf("wlan: %s acl policy unregistered\n", iac->iac_name); 347138568Ssam} 348138568Ssam 349138568Ssamconst struct ieee80211_aclator * 350138568Ssamieee80211_aclator_get(const char *name) 351138568Ssam{ 352138568Ssam if (acl == NULL) 353138568Ssam ieee80211_load_module("wlan_acl"); 354138568Ssam return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL; 355138568Ssam} 356138568Ssam 357138568Ssamvoid 358170530Ssamieee80211_print_essid(const uint8_t *essid, int len) 359138568Ssam{ 360170530Ssam const uint8_t *p; 361116742Ssam int i; 362116742Ssam 363116742Ssam if (len > IEEE80211_NWID_LEN) 364116742Ssam len = IEEE80211_NWID_LEN; 365116742Ssam /* determine printable or not */ 366116742Ssam for (i = 0, p = essid; i < len; i++, p++) { 367116742Ssam if (*p < ' ' || *p > 0x7e) 368116742Ssam break; 369116742Ssam } 370116742Ssam if (i == len) { 371116742Ssam printf("\""); 372116742Ssam for (i = 0, p = essid; i < len; i++, p++) 373116742Ssam printf("%c", *p); 374116742Ssam printf("\""); 375116742Ssam } else { 376116742Ssam printf("0x"); 377116742Ssam for (i = 0, p = essid; i < len; i++, p++) 378116742Ssam printf("%02x", *p); 379116742Ssam } 380116742Ssam} 381116742Ssam 382116742Ssamvoid 383170530Ssamieee80211_dump_pkt(struct ieee80211com *ic, 384170530Ssam const uint8_t *buf, int len, int rate, int rssi) 385116742Ssam{ 386138568Ssam const struct ieee80211_frame *wh; 387116742Ssam int i; 388116742Ssam 389138568Ssam wh = (const struct ieee80211_frame *)buf; 390116742Ssam switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) { 391116742Ssam case IEEE80211_FC1_DIR_NODS: 392116742Ssam printf("NODS %s", ether_sprintf(wh->i_addr2)); 393116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 394116742Ssam printf("(%s)", ether_sprintf(wh->i_addr3)); 395116742Ssam break; 396116742Ssam case IEEE80211_FC1_DIR_TODS: 397116742Ssam printf("TODS %s", ether_sprintf(wh->i_addr2)); 398116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 399116742Ssam printf("(%s)", ether_sprintf(wh->i_addr1)); 400116742Ssam break; 401116742Ssam case IEEE80211_FC1_DIR_FROMDS: 402116742Ssam printf("FRDS %s", ether_sprintf(wh->i_addr3)); 403116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 404116742Ssam printf("(%s)", ether_sprintf(wh->i_addr2)); 405116742Ssam break; 406116742Ssam case IEEE80211_FC1_DIR_DSTODS: 407170530Ssam printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1])); 408116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 409116742Ssam printf("(%s", ether_sprintf(wh->i_addr2)); 410116742Ssam printf("->%s)", ether_sprintf(wh->i_addr1)); 411116742Ssam break; 412116742Ssam } 413116742Ssam switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 414116742Ssam case IEEE80211_FC0_TYPE_DATA: 415116742Ssam printf(" data"); 416116742Ssam break; 417116742Ssam case IEEE80211_FC0_TYPE_MGT: 418116742Ssam printf(" %s", ieee80211_mgt_subtype_name[ 419116742Ssam (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 420116742Ssam >> IEEE80211_FC0_SUBTYPE_SHIFT]); 421116742Ssam break; 422116742Ssam default: 423116742Ssam printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK); 424116742Ssam break; 425116742Ssam } 426170530Ssam if (IEEE80211_QOS_HAS_SEQ(wh)) { 427170530Ssam const struct ieee80211_qosframe *qwh = 428170530Ssam (const struct ieee80211_qosframe *)buf; 429170530Ssam printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID, 430170530Ssam qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : ""); 431170530Ssam } 432138568Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 433170530Ssam int off; 434170530Ssam 435170530Ssam off = ieee80211_anyhdrspace(ic, wh); 436170530Ssam printf(" WEP [IV %.02x %.02x %.02x", 437170530Ssam buf[off+0], buf[off+1], buf[off+2]); 438170530Ssam if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV) 439170530Ssam printf(" %.02x %.02x %.02x", 440170530Ssam buf[off+4], buf[off+5], buf[off+6]); 441170530Ssam printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6); 442138568Ssam } 443116742Ssam if (rate >= 0) 444116742Ssam printf(" %dM", rate / 2); 445116742Ssam if (rssi >= 0) 446116742Ssam printf(" +%d", rssi); 447116742Ssam printf("\n"); 448116742Ssam if (len > 0) { 449116742Ssam for (i = 0; i < len; i++) { 450116742Ssam if ((i & 1) == 0) 451116742Ssam printf(" "); 452116742Ssam printf("%02x", buf[i]); 453116742Ssam } 454116742Ssam printf("\n"); 455116742Ssam } 456116742Ssam} 457116742Ssam 458165887Ssamstatic __inline int 459165887Ssamfindrix(const struct ieee80211_rateset *rs, int r) 460165887Ssam{ 461165887Ssam int i; 462165887Ssam 463165887Ssam for (i = 0; i < rs->rs_nrates; i++) 464165887Ssam if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r) 465165887Ssam return i; 466165887Ssam return -1; 467165887Ssam} 468165887Ssam 469116742Ssamint 470167442Ssamieee80211_fix_rate(struct ieee80211_node *ni, 471167442Ssam struct ieee80211_rateset *nrs, int flags) 472116742Ssam{ 473116742Ssam#define RV(v) ((v) & IEEE80211_RATE_VAL) 474178354Ssam struct ieee80211vap *vap = ni->ni_vap; 475148299Ssam struct ieee80211com *ic = ni->ni_ic; 476165887Ssam int i, j, rix, error; 477178354Ssam int okrate, badrate, fixedrate, ucastrate; 478165569Ssam const struct ieee80211_rateset *srs; 479170530Ssam uint8_t r; 480116742Ssam 481116742Ssam error = 0; 482170530Ssam okrate = badrate = 0; 483178354Ssam ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate; 484178354Ssam if (ucastrate != IEEE80211_FIXED_RATE_NONE) { 485178354Ssam /* 486178354Ssam * Workaround awkwardness with fixed rate. We are called 487178354Ssam * to check both the legacy rate set and the HT rate set 488178354Ssam * but we must apply any legacy fixed rate check only to the 489178354Ssam * legacy rate set and vice versa. We cannot tell what type 490178354Ssam * of rate set we've been given (legacy or HT) but we can 491178354Ssam * distinguish the fixed rate type (MCS have 0x80 set). 492178354Ssam * So to deal with this the caller communicates whether to 493178354Ssam * check MCS or legacy rate using the flags and we use the 494178354Ssam * type of any fixed rate to avoid applying an MCS to a 495178354Ssam * legacy rate and vice versa. 496178354Ssam */ 497178354Ssam if (ucastrate & 0x80) { 498178354Ssam if (flags & IEEE80211_F_DOFRATE) 499178354Ssam flags &= ~IEEE80211_F_DOFRATE; 500178354Ssam } else if ((ucastrate & 0x80) == 0) { 501178354Ssam if (flags & IEEE80211_F_DOFMCS) 502178354Ssam flags &= ~IEEE80211_F_DOFMCS; 503178354Ssam } 504178354Ssam /* NB: required to make MCS match below work */ 505178354Ssam ucastrate &= IEEE80211_RATE_VAL; 506178354Ssam } 507170530Ssam fixedrate = IEEE80211_FIXED_RATE_NONE; 508178354Ssam /* 509178354Ssam * XXX we are called to process both MCS and legacy rates; 510178354Ssam * we must use the appropriate basic rate set or chaos will 511178354Ssam * ensue; for now callers that want MCS must supply 512178354Ssam * IEEE80211_F_DOBRS; at some point we'll need to split this 513178354Ssam * function so there are two variants, one for MCS and one 514178354Ssam * for legacy rates. 515178354Ssam */ 516178354Ssam if (flags & IEEE80211_F_DOBRS) 517178354Ssam srs = (const struct ieee80211_rateset *) 518178354Ssam ieee80211_get_suphtrates(ic, ni->ni_chan); 519178354Ssam else 520178354Ssam srs = ieee80211_get_suprates(ic, ni->ni_chan); 521120482Ssam for (i = 0; i < nrs->rs_nrates; ) { 522116742Ssam if (flags & IEEE80211_F_DOSORT) { 523116742Ssam /* 524116742Ssam * Sort rates. 525116742Ssam */ 526116742Ssam for (j = i + 1; j < nrs->rs_nrates; j++) { 527116742Ssam if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) { 528116742Ssam r = nrs->rs_rates[i]; 529116742Ssam nrs->rs_rates[i] = nrs->rs_rates[j]; 530116742Ssam nrs->rs_rates[j] = r; 531116742Ssam } 532116742Ssam } 533116742Ssam } 534116742Ssam r = nrs->rs_rates[i] & IEEE80211_RATE_VAL; 535116742Ssam badrate = r; 536165887Ssam /* 537170530Ssam * Check for fixed rate. 538170530Ssam */ 539178354Ssam if (r == ucastrate) 540170530Ssam fixedrate = r; 541170530Ssam /* 542165887Ssam * Check against supported rates. 543165887Ssam */ 544165887Ssam rix = findrix(srs, r); 545116742Ssam if (flags & IEEE80211_F_DONEGO) { 546165887Ssam if (rix < 0) { 547120482Ssam /* 548120482Ssam * A rate in the node's rate set is not 549120482Ssam * supported. If this is a basic rate and we 550165887Ssam * are operating as a STA then this is an error. 551120482Ssam * Otherwise we just discard/ignore the rate. 552120482Ssam */ 553165887Ssam if ((flags & IEEE80211_F_JOIN) && 554120482Ssam (nrs->rs_rates[i] & IEEE80211_RATE_BASIC)) 555116742Ssam error++; 556165887Ssam } else if ((flags & IEEE80211_F_JOIN) == 0) { 557165887Ssam /* 558165887Ssam * Overwrite with the supported rate 559165887Ssam * value so any basic rate bit is set. 560165887Ssam */ 561165887Ssam nrs->rs_rates[i] = srs->rs_rates[rix]; 562116742Ssam } 563116742Ssam } 564165887Ssam if ((flags & IEEE80211_F_DODEL) && rix < 0) { 565116742Ssam /* 566116742Ssam * Delete unacceptable rates. 567116742Ssam */ 568165887Ssam nrs->rs_nrates--; 569165887Ssam for (j = i; j < nrs->rs_nrates; j++) 570165887Ssam nrs->rs_rates[j] = nrs->rs_rates[j + 1]; 571165887Ssam nrs->rs_rates[j] = 0; 572165887Ssam continue; 573116742Ssam } 574165887Ssam if (rix >= 0) 575116742Ssam okrate = nrs->rs_rates[i]; 576116742Ssam i++; 577116742Ssam } 578138568Ssam if (okrate == 0 || error != 0 || 579178354Ssam ((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) && 580178354Ssam fixedrate != ucastrate)) { 581178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni, 582178354Ssam "%s: flags 0x%x okrate %d error %d fixedrate 0x%x " 583178354Ssam "ucastrate %x\n", __func__, fixedrate, ucastrate, flags); 584116742Ssam return badrate | IEEE80211_RATE_BASIC; 585178354Ssam } else 586116742Ssam return RV(okrate); 587116742Ssam#undef RV 588116742Ssam} 589116742Ssam 590138568Ssam/* 591138568Ssam * Reset 11g-related state. 592138568Ssam */ 593138568Ssamvoid 594138568Ssamieee80211_reset_erp(struct ieee80211com *ic) 595138568Ssam{ 596138568Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 597138568Ssam ic->ic_nonerpsta = 0; 598138568Ssam ic->ic_longslotsta = 0; 599138568Ssam /* 600138568Ssam * Short slot time is enabled only when operating in 11g 601138568Ssam * and not in an IBSS. We must also honor whether or not 602138568Ssam * the driver is capable of doing it. 603138568Ssam */ 604138568Ssam ieee80211_set_shortslottime(ic, 605170530Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 606170530Ssam IEEE80211_IS_CHAN_HT(ic->ic_curchan) || 607170530Ssam (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 608138568Ssam ic->ic_opmode == IEEE80211_M_HOSTAP && 609138568Ssam (ic->ic_caps & IEEE80211_C_SHSLOT))); 610138568Ssam /* 611138568Ssam * Set short preamble and ERP barker-preamble flags. 612138568Ssam */ 613170530Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 614138568Ssam (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) { 615138568Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 616138568Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 617138568Ssam } else { 618138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 619138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 620138568Ssam } 621138568Ssam} 622138568Ssam 623138568Ssam/* 624138568Ssam * Set the short slot time state and notify the driver. 625138568Ssam */ 626138568Ssamvoid 627138568Ssamieee80211_set_shortslottime(struct ieee80211com *ic, int onoff) 628138568Ssam{ 629138568Ssam if (onoff) 630138568Ssam ic->ic_flags |= IEEE80211_F_SHSLOT; 631138568Ssam else 632138568Ssam ic->ic_flags &= ~IEEE80211_F_SHSLOT; 633138568Ssam /* notify driver */ 634138568Ssam if (ic->ic_updateslot != NULL) 635138568Ssam ic->ic_updateslot(ic->ic_ifp); 636138568Ssam} 637138568Ssam 638138568Ssam/* 639138568Ssam * Check if the specified rate set supports ERP. 640138568Ssam * NB: the rate set is assumed to be sorted. 641138568Ssam */ 642138568Ssamint 643178354Ssamieee80211_iserp_rateset(const struct ieee80211_rateset *rs) 644138568Ssam{ 645138568Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 646138568Ssam static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 }; 647138568Ssam int i, j; 648138568Ssam 649138568Ssam if (rs->rs_nrates < N(rates)) 650138568Ssam return 0; 651138568Ssam for (i = 0; i < N(rates); i++) { 652138568Ssam for (j = 0; j < rs->rs_nrates; j++) { 653138568Ssam int r = rs->rs_rates[j] & IEEE80211_RATE_VAL; 654138568Ssam if (rates[i] == r) 655138568Ssam goto next; 656138568Ssam if (r > rates[i]) 657138568Ssam return 0; 658138568Ssam } 659138568Ssam return 0; 660138568Ssam next: 661138568Ssam ; 662138568Ssam } 663138568Ssam return 1; 664138568Ssam#undef N 665138568Ssam} 666138568Ssam 667138568Ssam/* 668178354Ssam * Mark the basic rates for the rate table based on the 669138568Ssam * operating mode. For real 11g we mark all the 11b rates 670138568Ssam * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 671138568Ssam * 11b rates. There's also a pseudo 11a-mode used to mark only 672138568Ssam * the basic OFDM rates. 673138568Ssam */ 674178354Ssamstatic void 675178354Ssamsetbasicrates(struct ieee80211_rateset *rs, 676178354Ssam enum ieee80211_phymode mode, int add) 677138568Ssam{ 678170530Ssam static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = { 679188780Ssam [IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } }, 680188780Ssam [IEEE80211_MODE_11B] = { 2, { 2, 4 } }, 681188780Ssam /* NB: mixed b/g */ 682188780Ssam [IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } }, 683188780Ssam [IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } }, 684188780Ssam [IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } }, 685188780Ssam [IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } }, 686188782Ssam [IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } }, 687188782Ssam [IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } }, 688188780Ssam [IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } }, 689188780Ssam /* NB: mixed b/g */ 690188780Ssam [IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } }, 691138568Ssam }; 692138568Ssam int i, j; 693138568Ssam 694138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 695178354Ssam if (!add) 696178354Ssam rs->rs_rates[i] &= IEEE80211_RATE_VAL; 697138568Ssam for (j = 0; j < basic[mode].rs_nrates; j++) 698138568Ssam if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 699138568Ssam rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 700138568Ssam break; 701138568Ssam } 702138568Ssam } 703138568Ssam} 704138568Ssam 705138568Ssam/* 706178354Ssam * Set the basic rates in a rate set. 707138568Ssam */ 708178354Ssamvoid 709178354Ssamieee80211_setbasicrates(struct ieee80211_rateset *rs, 710178354Ssam enum ieee80211_phymode mode) 711178354Ssam{ 712178354Ssam setbasicrates(rs, mode, 0); 713178354Ssam} 714178354Ssam 715178354Ssam/* 716178354Ssam * Add basic rates to a rate set. 717178354Ssam */ 718178354Ssamvoid 719178354Ssamieee80211_addbasicrates(struct ieee80211_rateset *rs, 720178354Ssam enum ieee80211_phymode mode) 721178354Ssam{ 722178354Ssam setbasicrates(rs, mode, 1); 723178354Ssam} 724178354Ssam 725178354Ssam/* 726178354Ssam * WME protocol support. 727178354Ssam * 728178354Ssam * The default 11a/b/g/n parameters come from the WiFi Alliance WMM 729178354Ssam * System Interopability Test Plan (v1.4, Appendix F) and the 802.11n 730178354Ssam * Draft 2.0 Test Plan (Appendix D). 731178354Ssam * 732178354Ssam * Static/Dynamic Turbo mode settings come from Atheros. 733178354Ssam */ 734138568Ssamtypedef struct phyParamType { 735178354Ssam uint8_t aifsn; 736178354Ssam uint8_t logcwmin; 737178354Ssam uint8_t logcwmax; 738178354Ssam uint16_t txopLimit; 739178354Ssam uint8_t acm; 740138568Ssam} paramType; 741138568Ssam 742138568Ssamstatic const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = { 743188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 }, 744188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 }, 745188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 }, 746188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 }, 747188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 }, 748188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 }, 749188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 }, 750188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 }, 751188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 }, 752188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 }, 753188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 }, 754188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 }, 755138568Ssam}; 756138568Ssamstatic const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = { 757188780Ssam [IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 }, 758188780Ssam [IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 }, 759188780Ssam [IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 }, 760188780Ssam [IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 }, 761188780Ssam [IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 }, 762188780Ssam [IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 }, 763188780Ssam [IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 }, 764188780Ssam [IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 }, 765188782Ssam [IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 }, 766188782Ssam [IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 }, 767188780Ssam [IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 }, 768188780Ssam [IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 }, 769138568Ssam}; 770138568Ssamstatic const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = { 771188780Ssam [IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 }, 772188780Ssam [IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 }, 773188780Ssam [IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 }, 774188780Ssam [IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 }, 775188780Ssam [IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 }, 776188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 }, 777188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 }, 778188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 }, 779188782Ssam [IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 }, 780188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 }, 781188780Ssam [IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 }, 782188780Ssam [IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 }, 783138568Ssam}; 784138568Ssamstatic const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = { 785188780Ssam [IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 }, 786188780Ssam [IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 }, 787188780Ssam [IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 }, 788188780Ssam [IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 }, 789188780Ssam [IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 }, 790188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 791188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 792188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 793188782Ssam [IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 }, 794188782Ssam [IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 }, 795188780Ssam [IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 }, 796188780Ssam [IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 }, 797138568Ssam}; 798138568Ssam 799138568Ssamstatic const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = { 800188780Ssam [IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 }, 801188780Ssam [IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 }, 802188780Ssam [IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 }, 803188780Ssam [IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 }, 804188780Ssam [IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 }, 805188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 }, 806188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 }, 807188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 }, 808188782Ssam [IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 }, 809188782Ssam [IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 }, 810188780Ssam [IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 }, 811188780Ssam [IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 }, 812138568Ssam}; 813138568Ssamstatic const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = { 814188780Ssam [IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 }, 815188780Ssam [IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 }, 816188780Ssam [IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 }, 817188780Ssam [IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 }, 818188780Ssam [IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 }, 819188780Ssam [IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 }, 820188780Ssam [IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 }, 821188780Ssam [IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 }, 822188782Ssam [IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 }, 823188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 }, 824188780Ssam [IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 }, 825188780Ssam [IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 }, 826138568Ssam}; 827138568Ssamstatic const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = { 828188780Ssam [IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 }, 829188780Ssam [IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 }, 830188780Ssam [IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 }, 831188780Ssam [IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 }, 832188780Ssam [IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 }, 833188780Ssam [IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 }, 834188780Ssam [IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 }, 835188780Ssam [IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 }, 836188782Ssam [IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 }, 837188782Ssam [IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 }, 838188780Ssam [IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 }, 839188780Ssam [IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 }, 840138568Ssam}; 841138568Ssam 842178354Ssamstatic void 843188863Ssam_setifsparams(struct wmeParams *wmep, const paramType *phy) 844188863Ssam{ 845188863Ssam wmep->wmep_aifsn = phy->aifsn; 846188863Ssam wmep->wmep_logcwmin = phy->logcwmin; 847188863Ssam wmep->wmep_logcwmax = phy->logcwmax; 848188863Ssam wmep->wmep_txopLimit = phy->txopLimit; 849188863Ssam} 850188863Ssam 851188863Ssamstatic void 852188863Ssamsetwmeparams(struct ieee80211vap *vap, const char *type, int ac, 853188863Ssam struct wmeParams *wmep, const paramType *phy) 854188863Ssam{ 855188863Ssam wmep->wmep_acm = phy->acm; 856188863Ssam _setifsparams(wmep, phy); 857188863Ssam 858188863Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 859188863Ssam "set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n", 860188863Ssam ieee80211_wme_acnames[ac], type, 861188863Ssam wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin, 862188863Ssam wmep->wmep_logcwmax, wmep->wmep_txopLimit); 863188863Ssam} 864188863Ssam 865188863Ssamstatic void 866178354Ssamieee80211_wme_initparams_locked(struct ieee80211vap *vap) 867138568Ssam{ 868178354Ssam struct ieee80211com *ic = vap->iv_ic; 869138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 870138568Ssam const paramType *pPhyParam, *pBssPhyParam; 871138568Ssam struct wmeParams *wmep; 872170530Ssam enum ieee80211_phymode mode; 873138568Ssam int i; 874138568Ssam 875178354Ssam IEEE80211_LOCK_ASSERT(ic); 876178354Ssam 877188864Ssam if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1) 878138568Ssam return; 879138568Ssam 880170530Ssam /* 881170530Ssam * Select mode; we can be called early in which case we 882170530Ssam * always use auto mode. We know we'll be called when 883170530Ssam * entering the RUN state with bsschan setup properly 884170530Ssam * so state will eventually get set correctly 885170530Ssam */ 886170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 887170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 888170530Ssam else 889170530Ssam mode = IEEE80211_MODE_AUTO; 890138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 891138568Ssam switch (i) { 892138568Ssam case WME_AC_BK: 893170530Ssam pPhyParam = &phyParamForAC_BK[mode]; 894170530Ssam pBssPhyParam = &phyParamForAC_BK[mode]; 895138568Ssam break; 896138568Ssam case WME_AC_VI: 897170530Ssam pPhyParam = &phyParamForAC_VI[mode]; 898170530Ssam pBssPhyParam = &bssPhyParamForAC_VI[mode]; 899138568Ssam break; 900138568Ssam case WME_AC_VO: 901170530Ssam pPhyParam = &phyParamForAC_VO[mode]; 902170530Ssam pBssPhyParam = &bssPhyParamForAC_VO[mode]; 903138568Ssam break; 904138568Ssam case WME_AC_BE: 905138568Ssam default: 906170530Ssam pPhyParam = &phyParamForAC_BE[mode]; 907170530Ssam pBssPhyParam = &bssPhyParamForAC_BE[mode]; 908138568Ssam break; 909138568Ssam } 910138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 911138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 912188863Ssam setwmeparams(vap, "chan", i, wmep, pPhyParam); 913138568Ssam } else { 914188863Ssam setwmeparams(vap, "chan", i, wmep, pBssPhyParam); 915138568Ssam } 916138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 917188863Ssam setwmeparams(vap, "bss ", i, wmep, pBssPhyParam); 918138568Ssam } 919138568Ssam /* NB: check ic_bss to avoid NULL deref on initial attach */ 920178354Ssam if (vap->iv_bss != NULL) { 921138568Ssam /* 922138568Ssam * Calculate agressive mode switching threshold based 923138568Ssam * on beacon interval. This doesn't need locking since 924138568Ssam * we're only called before entering the RUN state at 925138568Ssam * which point we start sending beacon frames. 926138568Ssam */ 927138568Ssam wme->wme_hipri_switch_thresh = 928178354Ssam (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100; 929188864Ssam wme->wme_flags &= ~WME_F_AGGRMODE; 930178354Ssam ieee80211_wme_updateparams(vap); 931138568Ssam } 932138568Ssam} 933138568Ssam 934178354Ssamvoid 935178354Ssamieee80211_wme_initparams(struct ieee80211vap *vap) 936178354Ssam{ 937178354Ssam struct ieee80211com *ic = vap->iv_ic; 938178354Ssam 939178354Ssam IEEE80211_LOCK(ic); 940178354Ssam ieee80211_wme_initparams_locked(vap); 941178354Ssam IEEE80211_UNLOCK(ic); 942178354Ssam} 943178354Ssam 944138568Ssam/* 945138568Ssam * Update WME parameters for ourself and the BSS. 946138568Ssam */ 947138568Ssamvoid 948178354Ssamieee80211_wme_updateparams_locked(struct ieee80211vap *vap) 949138568Ssam{ 950188863Ssam static const paramType aggrParam[IEEE80211_MODE_MAX] = { 951188780Ssam [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 }, 952188780Ssam [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 }, 953188780Ssam [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 }, 954188780Ssam [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 }, 955188780Ssam [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 }, 956188780Ssam [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 }, 957188780Ssam [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 }, 958188780Ssam [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 }, 959188782Ssam [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 }, 960188782Ssam [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 }, 961188780Ssam [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 962188780Ssam [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 963138568Ssam }; 964178354Ssam struct ieee80211com *ic = vap->iv_ic; 965138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 966138568Ssam const struct wmeParams *wmep; 967138568Ssam struct wmeParams *chanp, *bssp; 968170530Ssam enum ieee80211_phymode mode; 969138568Ssam int i; 970138568Ssam 971188863Ssam /* 972188863Ssam * Set up the channel access parameters for the physical 973188863Ssam * device. First populate the configured settings. 974188863Ssam */ 975138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 976138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[i]; 977138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 978138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 979138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 980138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 981138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 982138568Ssam 983138568Ssam chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 984138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 985138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 986138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 987138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 988138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 989138568Ssam } 990138568Ssam 991138568Ssam /* 992170530Ssam * Select mode; we can be called early in which case we 993170530Ssam * always use auto mode. We know we'll be called when 994170530Ssam * entering the RUN state with bsschan setup properly 995170530Ssam * so state will eventually get set correctly 996170530Ssam */ 997170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 998170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 999170530Ssam else 1000170530Ssam mode = IEEE80211_MODE_AUTO; 1001170530Ssam 1002170530Ssam /* 1003138568Ssam * This implements agressive mode as found in certain 1004138568Ssam * vendors' AP's. When there is significant high 1005138568Ssam * priority (VI/VO) traffic in the BSS throttle back BE 1006138568Ssam * traffic by using conservative parameters. Otherwise 1007138568Ssam * BE uses agressive params to optimize performance of 1008138568Ssam * legacy/non-QoS traffic. 1009138568Ssam */ 1010178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP && 1011156524Ssam (wme->wme_flags & WME_F_AGGRMODE) != 0) || 1012178354Ssam (vap->iv_opmode == IEEE80211_M_STA && 1013178354Ssam (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0) || 1014178354Ssam (vap->iv_flags & IEEE80211_F_WME) == 0) { 1015138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1016138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1017138568Ssam 1018188863Ssam chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn; 1019138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 1020188863Ssam aggrParam[mode].logcwmin; 1021138568Ssam chanp->wmep_logcwmax = bssp->wmep_logcwmax = 1022188863Ssam aggrParam[mode].logcwmax; 1023138568Ssam chanp->wmep_txopLimit = bssp->wmep_txopLimit = 1024188863Ssam (vap->iv_flags & IEEE80211_F_BURST) ? 1025188863Ssam aggrParam[mode].txopLimit : 0; 1026178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1027188863Ssam "update %s (chan+bss) [acm %u aifsn %u logcwmin %u " 1028188863Ssam "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE], 1029188863Ssam chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin, 1030188863Ssam chanp->wmep_logcwmax, chanp->wmep_txopLimit); 1031138568Ssam } 1032138568Ssam 1033178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1034156524Ssam ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 1035188780Ssam static const uint8_t logCwMin[IEEE80211_MODE_MAX] = { 1036188780Ssam [IEEE80211_MODE_AUTO] = 3, 1037188780Ssam [IEEE80211_MODE_11A] = 3, 1038188780Ssam [IEEE80211_MODE_11B] = 4, 1039188780Ssam [IEEE80211_MODE_11G] = 3, 1040188780Ssam [IEEE80211_MODE_FH] = 4, 1041188780Ssam [IEEE80211_MODE_TURBO_A] = 3, 1042188780Ssam [IEEE80211_MODE_TURBO_G] = 3, 1043188780Ssam [IEEE80211_MODE_STURBO_A] = 3, 1044188782Ssam [IEEE80211_MODE_HALF] = 3, 1045188782Ssam [IEEE80211_MODE_QUARTER] = 3, 1046188780Ssam [IEEE80211_MODE_11NA] = 3, 1047188780Ssam [IEEE80211_MODE_11NG] = 3, 1048138568Ssam }; 1049138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1050138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1051138568Ssam 1052170530Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode]; 1053178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1054188863Ssam "update %s (chan+bss) logcwmin %u\n", 1055188863Ssam ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin); 1056138568Ssam } 1057178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */ 1058138568Ssam /* 1059138568Ssam * Arrange for a beacon update and bump the parameter 1060138568Ssam * set number so associated stations load the new values. 1061138568Ssam */ 1062138568Ssam wme->wme_bssChanParams.cap_info = 1063138568Ssam (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 1064178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME); 1065138568Ssam } 1066138568Ssam 1067138568Ssam wme->wme_update(ic); 1068138568Ssam 1069178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1070188863Ssam "%s: WME params updated, cap_info 0x%x\n", __func__, 1071188863Ssam vap->iv_opmode == IEEE80211_M_STA ? 1072188863Ssam wme->wme_wmeChanParams.cap_info : 1073188863Ssam wme->wme_bssChanParams.cap_info); 1074138568Ssam} 1075138568Ssam 1076138568Ssamvoid 1077178354Ssamieee80211_wme_updateparams(struct ieee80211vap *vap) 1078138568Ssam{ 1079178354Ssam struct ieee80211com *ic = vap->iv_ic; 1080138568Ssam 1081138568Ssam if (ic->ic_caps & IEEE80211_C_WME) { 1082178354Ssam IEEE80211_LOCK(ic); 1083178354Ssam ieee80211_wme_updateparams_locked(vap); 1084178354Ssam IEEE80211_UNLOCK(ic); 1085138568Ssam } 1086138568Ssam} 1087138568Ssam 1088178354Ssamstatic void 1089178354Ssamparent_updown(void *arg, int npending) 1090178354Ssam{ 1091178354Ssam struct ifnet *parent = arg; 1092178354Ssam 1093178354Ssam parent->if_ioctl(parent, SIOCSIFFLAGS, NULL); 1094178354Ssam} 1095178354Ssam 1096191746Sthompsastatic void 1097191746Sthompsaupdate_mcast(void *arg, int npending) 1098191746Sthompsa{ 1099191746Sthompsa struct ieee80211com *ic = arg; 1100191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1101191746Sthompsa 1102191746Sthompsa ic->ic_update_mcast(parent); 1103191746Sthompsa} 1104191746Sthompsa 1105191746Sthompsastatic void 1106191746Sthompsaupdate_promisc(void *arg, int npending) 1107191746Sthompsa{ 1108191746Sthompsa struct ieee80211com *ic = arg; 1109191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1110191746Sthompsa 1111191746Sthompsa ic->ic_update_promisc(parent); 1112191746Sthompsa} 1113191746Sthompsa 1114191746Sthompsastatic void 1115191746Sthompsaupdate_channel(void *arg, int npending) 1116191746Sthompsa{ 1117191746Sthompsa struct ieee80211com *ic = arg; 1118191746Sthompsa 1119191746Sthompsa ic->ic_set_channel(ic); 1120192468Ssam ieee80211_radiotap_chan_change(ic); 1121191746Sthompsa} 1122191746Sthompsa 1123170530Ssam/* 1124188533Sthompsa * Block until the parent is in a known state. This is 1125188533Sthompsa * used after any operations that dispatch a task (e.g. 1126188533Sthompsa * to auto-configure the parent device up/down). 1127188533Sthompsa */ 1128188533Sthompsavoid 1129188533Sthompsaieee80211_waitfor_parent(struct ieee80211com *ic) 1130188533Sthompsa{ 1131191746Sthompsa taskqueue_block(ic->ic_tq); 1132191746Sthompsa ieee80211_draintask(ic, &ic->ic_parent_task); 1133191746Sthompsa ieee80211_draintask(ic, &ic->ic_mcast_task); 1134191746Sthompsa ieee80211_draintask(ic, &ic->ic_promisc_task); 1135191746Sthompsa ieee80211_draintask(ic, &ic->ic_chan_task); 1136191746Sthompsa ieee80211_draintask(ic, &ic->ic_bmiss_task); 1137191746Sthompsa taskqueue_unblock(ic->ic_tq); 1138188533Sthompsa} 1139188533Sthompsa 1140188533Sthompsa/* 1141178354Ssam * Start a vap running. If this is the first vap to be 1142178354Ssam * set running on the underlying device then we 1143178354Ssam * automatically bring the device up. 1144170530Ssam */ 1145178354Ssamvoid 1146178354Ssamieee80211_start_locked(struct ieee80211vap *vap) 1147170530Ssam{ 1148178354Ssam struct ifnet *ifp = vap->iv_ifp; 1149178354Ssam struct ieee80211com *ic = vap->iv_ic; 1150178354Ssam struct ifnet *parent = ic->ic_ifp; 1151170530Ssam 1152178354Ssam IEEE80211_LOCK_ASSERT(ic); 1153178354Ssam 1154178354Ssam IEEE80211_DPRINTF(vap, 1155170530Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1156178354Ssam "start running, %d vaps running\n", ic->ic_nrunning); 1157170530Ssam 1158178354Ssam if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1159178354Ssam /* 1160178354Ssam * Mark us running. Note that it's ok to do this first; 1161178354Ssam * if we need to bring the parent device up we defer that 1162178354Ssam * to avoid dropping the com lock. We expect the device 1163178354Ssam * to respond to being marked up by calling back into us 1164178354Ssam * through ieee80211_start_all at which point we'll come 1165178354Ssam * back in here and complete the work. 1166178354Ssam */ 1167178354Ssam ifp->if_drv_flags |= IFF_DRV_RUNNING; 1168178354Ssam /* 1169178354Ssam * We are not running; if this we are the first vap 1170178354Ssam * to be brought up auto-up the parent if necessary. 1171178354Ssam */ 1172178354Ssam if (ic->ic_nrunning++ == 0 && 1173178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1174178354Ssam IEEE80211_DPRINTF(vap, 1175178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1176178354Ssam "%s: up parent %s\n", __func__, parent->if_xname); 1177178354Ssam parent->if_flags |= IFF_UP; 1178191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1179178354Ssam return; 1180178354Ssam } 1181178354Ssam } 1182170530Ssam /* 1183178354Ssam * If the parent is up and running, then kick the 1184178354Ssam * 802.11 state machine as appropriate. 1185170530Ssam */ 1186178354Ssam if ((parent->if_drv_flags & IFF_DRV_RUNNING) && 1187178354Ssam vap->iv_roaming != IEEE80211_ROAMING_MANUAL) { 1188178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 1189178354Ssam#if 0 1190178354Ssam /* XXX bypasses scan too easily; disable for now */ 1191178354Ssam /* 1192178354Ssam * Try to be intelligent about clocking the state 1193178354Ssam * machine. If we're currently in RUN state then 1194178354Ssam * we should be able to apply any new state/parameters 1195178354Ssam * simply by re-associating. Otherwise we need to 1196178354Ssam * re-scan to select an appropriate ap. 1197178354Ssam */ 1198178354Ssam if (vap->iv_state >= IEEE80211_S_RUN) 1199178354Ssam ieee80211_new_state_locked(vap, 1200178354Ssam IEEE80211_S_ASSOC, 1); 1201178354Ssam else 1202178354Ssam#endif 1203178354Ssam ieee80211_new_state_locked(vap, 1204178354Ssam IEEE80211_S_SCAN, 0); 1205170530Ssam } else { 1206170530Ssam /* 1207178354Ssam * For monitor+wds mode there's nothing to do but 1208178354Ssam * start running. Otherwise if this is the first 1209170530Ssam * vap to be brought up, start a scan which may be 1210170530Ssam * preempted if the station is locked to a particular 1211170530Ssam * channel. 1212170530Ssam */ 1213191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_REINIT; 1214178354Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR || 1215178354Ssam vap->iv_opmode == IEEE80211_M_WDS) 1216178354Ssam ieee80211_new_state_locked(vap, 1217178354Ssam IEEE80211_S_RUN, -1); 1218178354Ssam else 1219178354Ssam ieee80211_new_state_locked(vap, 1220178354Ssam IEEE80211_S_SCAN, 0); 1221170530Ssam } 1222170530Ssam } 1223170530Ssam} 1224170530Ssam 1225170530Ssam/* 1226178354Ssam * Start a single vap. 1227178354Ssam */ 1228178354Ssamvoid 1229178354Ssamieee80211_init(void *arg) 1230178354Ssam{ 1231178354Ssam struct ieee80211vap *vap = arg; 1232178354Ssam 1233193348Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1234193348Ssam "%s\n", __func__); 1235178354Ssam 1236193348Ssam IEEE80211_LOCK(vap->iv_ic); 1237193348Ssam ieee80211_start_locked(vap); 1238193348Ssam IEEE80211_UNLOCK(vap->iv_ic); 1239178354Ssam} 1240178354Ssam 1241178354Ssam/* 1242178354Ssam * Start all runnable vap's on a device. 1243178354Ssam */ 1244178354Ssamvoid 1245178354Ssamieee80211_start_all(struct ieee80211com *ic) 1246178354Ssam{ 1247178354Ssam struct ieee80211vap *vap; 1248178354Ssam 1249178354Ssam IEEE80211_LOCK(ic); 1250178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1251178354Ssam struct ifnet *ifp = vap->iv_ifp; 1252178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1253178354Ssam ieee80211_start_locked(vap); 1254178354Ssam } 1255178354Ssam IEEE80211_UNLOCK(ic); 1256178354Ssam} 1257178354Ssam 1258178354Ssam/* 1259178354Ssam * Stop a vap. We force it down using the state machine 1260178354Ssam * then mark it's ifnet not running. If this is the last 1261178354Ssam * vap running on the underlying device then we close it 1262178354Ssam * too to insure it will be properly initialized when the 1263178354Ssam * next vap is brought up. 1264178354Ssam */ 1265178354Ssamvoid 1266178354Ssamieee80211_stop_locked(struct ieee80211vap *vap) 1267178354Ssam{ 1268178354Ssam struct ieee80211com *ic = vap->iv_ic; 1269178354Ssam struct ifnet *ifp = vap->iv_ifp; 1270178354Ssam struct ifnet *parent = ic->ic_ifp; 1271178354Ssam 1272178354Ssam IEEE80211_LOCK_ASSERT(ic); 1273178354Ssam 1274178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1275178354Ssam "stop running, %d vaps running\n", ic->ic_nrunning); 1276178354Ssam 1277178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1); 1278178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1279178354Ssam ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */ 1280178354Ssam if (--ic->ic_nrunning == 0 && 1281178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING)) { 1282178354Ssam IEEE80211_DPRINTF(vap, 1283178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1284178354Ssam "down parent %s\n", parent->if_xname); 1285178354Ssam parent->if_flags &= ~IFF_UP; 1286191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1287178354Ssam } 1288178354Ssam } 1289178354Ssam} 1290178354Ssam 1291178354Ssamvoid 1292178354Ssamieee80211_stop(struct ieee80211vap *vap) 1293178354Ssam{ 1294178354Ssam struct ieee80211com *ic = vap->iv_ic; 1295178354Ssam 1296178354Ssam IEEE80211_LOCK(ic); 1297178354Ssam ieee80211_stop_locked(vap); 1298178354Ssam IEEE80211_UNLOCK(ic); 1299178354Ssam} 1300178354Ssam 1301178354Ssam/* 1302178354Ssam * Stop all vap's running on a device. 1303178354Ssam */ 1304178354Ssamvoid 1305178354Ssamieee80211_stop_all(struct ieee80211com *ic) 1306178354Ssam{ 1307178354Ssam struct ieee80211vap *vap; 1308178354Ssam 1309178354Ssam IEEE80211_LOCK(ic); 1310178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1311178354Ssam struct ifnet *ifp = vap->iv_ifp; 1312178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1313178354Ssam ieee80211_stop_locked(vap); 1314178354Ssam } 1315178354Ssam IEEE80211_UNLOCK(ic); 1316188533Sthompsa 1317188533Sthompsa ieee80211_waitfor_parent(ic); 1318178354Ssam} 1319178354Ssam 1320178354Ssam/* 1321179391Ssam * Stop all vap's running on a device and arrange 1322179391Ssam * for those that were running to be resumed. 1323179391Ssam */ 1324179391Ssamvoid 1325179391Ssamieee80211_suspend_all(struct ieee80211com *ic) 1326179391Ssam{ 1327179391Ssam struct ieee80211vap *vap; 1328179391Ssam 1329179391Ssam IEEE80211_LOCK(ic); 1330179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1331179391Ssam struct ifnet *ifp = vap->iv_ifp; 1332179391Ssam if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */ 1333179391Ssam vap->iv_flags_ext |= IEEE80211_FEXT_RESUME; 1334179391Ssam ieee80211_stop_locked(vap); 1335179391Ssam } 1336179391Ssam } 1337179391Ssam IEEE80211_UNLOCK(ic); 1338188533Sthompsa 1339188533Sthompsa ieee80211_waitfor_parent(ic); 1340179391Ssam} 1341179391Ssam 1342179391Ssam/* 1343179391Ssam * Start all vap's marked for resume. 1344179391Ssam */ 1345179391Ssamvoid 1346179391Ssamieee80211_resume_all(struct ieee80211com *ic) 1347179391Ssam{ 1348179391Ssam struct ieee80211vap *vap; 1349179391Ssam 1350179391Ssam IEEE80211_LOCK(ic); 1351179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1352179391Ssam struct ifnet *ifp = vap->iv_ifp; 1353179391Ssam if (!IFNET_IS_UP_RUNNING(ifp) && 1354179391Ssam (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) { 1355179391Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME; 1356179391Ssam ieee80211_start_locked(vap); 1357179391Ssam } 1358179391Ssam } 1359179391Ssam IEEE80211_UNLOCK(ic); 1360179391Ssam} 1361179391Ssam 1362153349Ssamvoid 1363153349Ssamieee80211_beacon_miss(struct ieee80211com *ic) 1364153349Ssam{ 1365191746Sthompsa IEEE80211_LOCK(ic); 1366191746Sthompsa if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1367191746Sthompsa /* Process in a taskq, the handler may reenter the driver */ 1368191746Sthompsa ieee80211_runtask(ic, &ic->ic_bmiss_task); 1369191746Sthompsa } 1370191746Sthompsa IEEE80211_UNLOCK(ic); 1371191746Sthompsa} 1372191746Sthompsa 1373191746Sthompsastatic void 1374191746Sthompsabeacon_miss(void *arg, int npending) 1375191746Sthompsa{ 1376191746Sthompsa struct ieee80211com *ic = arg; 1377178354Ssam struct ieee80211vap *vap; 1378153349Ssam 1379178354Ssam /* XXX locking */ 1380178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1381153349Ssam /* 1382178354Ssam * We only pass events through for sta vap's in RUN state; 1383178354Ssam * may be too restrictive but for now this saves all the 1384178354Ssam * handlers duplicating these checks. 1385153349Ssam */ 1386178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 1387193439Ssam vap->iv_state >= IEEE80211_S_RUN && 1388178354Ssam vap->iv_bmiss != NULL) 1389178354Ssam vap->iv_bmiss(vap); 1390153349Ssam } 1391153349Ssam} 1392153349Ssam 1393191746Sthompsastatic void 1394191746Sthompsabeacon_swmiss(void *arg, int npending) 1395191746Sthompsa{ 1396191746Sthompsa struct ieee80211vap *vap = arg; 1397191746Sthompsa 1398191746Sthompsa if (vap->iv_state != IEEE80211_S_RUN) 1399191746Sthompsa return; 1400191746Sthompsa 1401191746Sthompsa /* XXX Call multiple times if npending > zero? */ 1402191746Sthompsa vap->iv_bmiss(vap); 1403191746Sthompsa} 1404191746Sthompsa 1405154736Ssam/* 1406154736Ssam * Software beacon miss handling. Check if any beacons 1407154736Ssam * were received in the last period. If not post a 1408154736Ssam * beacon miss; otherwise reset the counter. 1409154736Ssam */ 1410178354Ssamvoid 1411154736Ssamieee80211_swbmiss(void *arg) 1412154736Ssam{ 1413178354Ssam struct ieee80211vap *vap = arg; 1414179217Ssam struct ieee80211com *ic = vap->iv_ic; 1415154736Ssam 1416179217Ssam /* XXX sleep state? */ 1417179217Ssam KASSERT(vap->iv_state == IEEE80211_S_RUN, 1418179217Ssam ("wrong state %d", vap->iv_state)); 1419179217Ssam 1420179217Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1421179217Ssam /* 1422179217Ssam * If scanning just ignore and reset state. If we get a 1423179217Ssam * bmiss after coming out of scan because we haven't had 1424179217Ssam * time to receive a beacon then we should probe the AP 1425179217Ssam * before posting a real bmiss (unless iv_bmiss_max has 1426179217Ssam * been artifiically lowered). A cleaner solution might 1427179217Ssam * be to disable the timer on scan start/end but to handle 1428179217Ssam * case of multiple sta vap's we'd need to disable the 1429179217Ssam * timers of all affected vap's. 1430179217Ssam */ 1431179217Ssam vap->iv_swbmiss_count = 0; 1432179217Ssam } else if (vap->iv_swbmiss_count == 0) { 1433178354Ssam if (vap->iv_bmiss != NULL) 1434191746Sthompsa ieee80211_runtask(ic, &vap->iv_swbmiss_task); 1435178354Ssam if (vap->iv_bmiss_count == 0) /* don't re-arm timer */ 1436154736Ssam return; 1437154736Ssam } else 1438178354Ssam vap->iv_swbmiss_count = 0; 1439178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 1440178354Ssam ieee80211_swbmiss, vap); 1441154736Ssam} 1442154736Ssam 1443178354Ssam/* 1444178354Ssam * Start an 802.11h channel switch. We record the parameters, 1445178354Ssam * mark the operation pending, notify each vap through the 1446178354Ssam * beacon update mechanism so it can update the beacon frame 1447178354Ssam * contents, and then switch vap's to CSA state to block outbound 1448178354Ssam * traffic. Devices that handle CSA directly can use the state 1449178354Ssam * switch to do the right thing so long as they call 1450178354Ssam * ieee80211_csa_completeswitch when it's time to complete the 1451178354Ssam * channel change. Devices that depend on the net80211 layer can 1452178354Ssam * use ieee80211_beacon_update to handle the countdown and the 1453178354Ssam * channel switch. 1454178354Ssam */ 1455178354Ssamvoid 1456178354Ssamieee80211_csa_startswitch(struct ieee80211com *ic, 1457178354Ssam struct ieee80211_channel *c, int mode, int count) 1458178354Ssam{ 1459178354Ssam struct ieee80211vap *vap; 1460178354Ssam 1461178354Ssam IEEE80211_LOCK_ASSERT(ic); 1462178354Ssam 1463178354Ssam ic->ic_csa_newchan = c; 1464193439Ssam ic->ic_csa_mode = mode; 1465178354Ssam ic->ic_csa_count = count; 1466178354Ssam ic->ic_flags |= IEEE80211_F_CSAPENDING; 1467178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1468178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP || 1469195618Srpaulo vap->iv_opmode == IEEE80211_M_IBSS || 1470195618Srpaulo vap->iv_opmode == IEEE80211_M_MBSS) 1471178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA); 1472178354Ssam /* switch to CSA state to block outbound traffic */ 1473178354Ssam if (vap->iv_state == IEEE80211_S_RUN) 1474178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0); 1475178354Ssam } 1476178354Ssam ieee80211_notify_csa(ic, c, mode, count); 1477178354Ssam} 1478178354Ssam 1479193439Ssamstatic void 1480193439Ssamcsa_completeswitch(struct ieee80211com *ic) 1481193439Ssam{ 1482193439Ssam struct ieee80211vap *vap; 1483193439Ssam 1484193439Ssam ic->ic_csa_newchan = NULL; 1485193439Ssam ic->ic_flags &= ~IEEE80211_F_CSAPENDING; 1486193439Ssam 1487193439Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1488193439Ssam if (vap->iv_state == IEEE80211_S_CSA) 1489193439Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1490193439Ssam} 1491193439Ssam 1492178354Ssam/* 1493178354Ssam * Complete an 802.11h channel switch started by ieee80211_csa_startswitch. 1494178354Ssam * We clear state and move all vap's in CSA state to RUN state 1495178354Ssam * so they can again transmit. 1496178354Ssam */ 1497178354Ssamvoid 1498178354Ssamieee80211_csa_completeswitch(struct ieee80211com *ic) 1499178354Ssam{ 1500178354Ssam IEEE80211_LOCK_ASSERT(ic); 1501178354Ssam 1502178354Ssam KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending")); 1503178354Ssam 1504178354Ssam ieee80211_setcurchan(ic, ic->ic_csa_newchan); 1505193439Ssam csa_completeswitch(ic); 1506193439Ssam} 1507178354Ssam 1508193439Ssam/* 1509193439Ssam * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch. 1510193439Ssam * We clear state and move all vap's in CSA state to RUN state 1511193439Ssam * so they can again transmit. 1512193439Ssam */ 1513193439Ssamvoid 1514193439Ssamieee80211_csa_cancelswitch(struct ieee80211com *ic) 1515193439Ssam{ 1516193439Ssam IEEE80211_LOCK_ASSERT(ic); 1517193439Ssam 1518193439Ssam csa_completeswitch(ic); 1519178354Ssam} 1520178354Ssam 1521178354Ssam/* 1522178354Ssam * Complete a DFS CAC started by ieee80211_dfs_cac_start. 1523178354Ssam * We clear state and move all vap's in CAC state to RUN state. 1524178354Ssam */ 1525178354Ssamvoid 1526178354Ssamieee80211_cac_completeswitch(struct ieee80211vap *vap0) 1527178354Ssam{ 1528178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1529178354Ssam struct ieee80211vap *vap; 1530178354Ssam 1531178354Ssam IEEE80211_LOCK(ic); 1532178354Ssam /* 1533178354Ssam * Complete CAC state change for lead vap first; then 1534178354Ssam * clock all the other vap's waiting. 1535178354Ssam */ 1536178354Ssam KASSERT(vap0->iv_state == IEEE80211_S_CAC, 1537178354Ssam ("wrong state %d", vap0->iv_state)); 1538178354Ssam ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0); 1539178354Ssam 1540178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1541178354Ssam if (vap->iv_state == IEEE80211_S_CAC) 1542178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1543178354Ssam IEEE80211_UNLOCK(ic); 1544178354Ssam} 1545178354Ssam 1546178354Ssam/* 1547178354Ssam * Force all vap's other than the specified vap to the INIT state 1548178354Ssam * and mark them as waiting for a scan to complete. These vaps 1549178354Ssam * will be brought up when the scan completes and the scanning vap 1550178354Ssam * reaches RUN state by wakeupwaiting. 1551178354Ssam */ 1552154736Ssamstatic void 1553178354Ssammarkwaiting(struct ieee80211vap *vap0) 1554147765Ssam{ 1555178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1556178354Ssam struct ieee80211vap *vap; 1557147765Ssam 1558178354Ssam IEEE80211_LOCK_ASSERT(ic); 1559178354Ssam 1560191746Sthompsa /* 1561191746Sthompsa * A vap list entry can not disappear since we are running on the 1562191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1563191746Sthompsa * change task. 1564191746Sthompsa */ 1565178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1566178354Ssam if (vap == vap0) 1567178354Ssam continue; 1568178354Ssam if (vap->iv_state != IEEE80211_S_INIT) { 1569191746Sthompsa /* NB: iv_newstate may drop the lock */ 1570178354Ssam vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 1571178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1572178354Ssam } 1573147765Ssam } 1574147765Ssam} 1575147765Ssam 1576178354Ssam/* 1577178354Ssam * Wakeup all vap's waiting for a scan to complete. This is the 1578178354Ssam * companion to markwaiting (above) and is used to coordinate 1579178354Ssam * multiple vaps scanning. 1580191746Sthompsa * This is called from the state taskqueue. 1581178354Ssam */ 1582147765Ssamstatic void 1583178354Ssamwakeupwaiting(struct ieee80211vap *vap0) 1584147765Ssam{ 1585178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1586178354Ssam struct ieee80211vap *vap; 1587147765Ssam 1588178354Ssam IEEE80211_LOCK_ASSERT(ic); 1589178354Ssam 1590191746Sthompsa /* 1591191746Sthompsa * A vap list entry can not disappear since we are running on the 1592191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1593191746Sthompsa * change task. 1594191746Sthompsa */ 1595178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1596178354Ssam if (vap == vap0) 1597178354Ssam continue; 1598178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) { 1599178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1600178354Ssam /* NB: sta's cannot go INIT->RUN */ 1601191746Sthompsa /* NB: iv_newstate may drop the lock */ 1602178354Ssam vap->iv_newstate(vap, 1603178354Ssam vap->iv_opmode == IEEE80211_M_STA ? 1604178354Ssam IEEE80211_S_SCAN : IEEE80211_S_RUN, 0); 1605178354Ssam } 1606178354Ssam } 1607147765Ssam} 1608147765Ssam 1609170530Ssam/* 1610178354Ssam * Handle post state change work common to all operating modes. 1611170530Ssam */ 1612170530Ssamstatic void 1613191746Sthompsaieee80211_newstate_cb(void *xvap, int npending) 1614170530Ssam{ 1615191746Sthompsa struct ieee80211vap *vap = xvap; 1616178354Ssam struct ieee80211com *ic = vap->iv_ic; 1617191746Sthompsa enum ieee80211_state nstate, ostate; 1618191746Sthompsa int arg, rc; 1619178354Ssam 1620191746Sthompsa IEEE80211_LOCK(ic); 1621191746Sthompsa nstate = vap->iv_nstate; 1622191746Sthompsa arg = vap->iv_nstate_arg; 1623178354Ssam 1624191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) { 1625191746Sthompsa /* 1626191746Sthompsa * We have been requested to drop back to the INIT before 1627191746Sthompsa * proceeding to the new state. 1628191746Sthompsa */ 1629191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1630191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1631191746Sthompsa ieee80211_state_name[vap->iv_state], 1632191746Sthompsa ieee80211_state_name[IEEE80211_S_INIT], arg); 1633191746Sthompsa vap->iv_newstate(vap, IEEE80211_S_INIT, arg); 1634191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT; 1635191746Sthompsa } 1636191746Sthompsa 1637191746Sthompsa ostate = vap->iv_state; 1638191746Sthompsa if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) { 1639191746Sthompsa /* 1640191746Sthompsa * SCAN was forced; e.g. on beacon miss. Force other running 1641191746Sthompsa * vap's to INIT state and mark them as waiting for the scan to 1642191746Sthompsa * complete. This insures they don't interfere with our 1643191746Sthompsa * scanning. Since we are single threaded the vaps can not 1644191746Sthompsa * transition again while we are executing. 1645191746Sthompsa * 1646191746Sthompsa * XXX not always right, assumes ap follows sta 1647191746Sthompsa */ 1648191746Sthompsa markwaiting(vap); 1649191746Sthompsa } 1650178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1651191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1652191746Sthompsa ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); 1653178354Ssam 1654191746Sthompsa rc = vap->iv_newstate(vap, nstate, arg); 1655191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT; 1656191746Sthompsa if (rc != 0) { 1657191746Sthompsa /* State transition failed */ 1658191746Sthompsa KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred")); 1659191746Sthompsa KASSERT(nstate != IEEE80211_S_INIT, 1660191746Sthompsa ("INIT state change failed")); 1661191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1662191746Sthompsa "%s: %s returned error %d\n", __func__, 1663191746Sthompsa ieee80211_state_name[nstate], rc); 1664191746Sthompsa goto done; 1665191746Sthompsa } 1666191746Sthompsa 1667191746Sthompsa /* No actual transition, skip post processing */ 1668191746Sthompsa if (ostate == nstate) 1669191746Sthompsa goto done; 1670191746Sthompsa 1671178354Ssam if (nstate == IEEE80211_S_RUN) { 1672178354Ssam /* 1673178354Ssam * OACTIVE may be set on the vap if the upper layer 1674178354Ssam * tried to transmit (e.g. IPv6 NDP) before we reach 1675178354Ssam * RUN state. Clear it and restart xmit. 1676178354Ssam * 1677178354Ssam * Note this can also happen as a result of SLEEP->RUN 1678178354Ssam * (i.e. coming out of power save mode). 1679178354Ssam */ 1680178354Ssam vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1681178354Ssam if_start(vap->iv_ifp); 1682178354Ssam 1683178354Ssam /* bring up any vaps waiting on us */ 1684178354Ssam wakeupwaiting(vap); 1685178354Ssam } else if (nstate == IEEE80211_S_INIT) { 1686178354Ssam /* 1687178354Ssam * Flush the scan cache if we did the last scan (XXX?) 1688178354Ssam * and flush any frames on send queues from this vap. 1689178354Ssam * Note the mgt q is used only for legacy drivers and 1690178354Ssam * will go away shortly. 1691178354Ssam */ 1692178354Ssam ieee80211_scan_flush(vap); 1693178354Ssam 1694178354Ssam /* XXX NB: cast for altq */ 1695178354Ssam ieee80211_flush_ifq((struct ifqueue *)&ic->ic_ifp->if_snd, vap); 1696170530Ssam } 1697191746Sthompsadone: 1698191746Sthompsa IEEE80211_UNLOCK(ic); 1699170530Ssam} 1700170530Ssam 1701178354Ssam/* 1702178354Ssam * Public interface for initiating a state machine change. 1703178354Ssam * This routine single-threads the request and coordinates 1704178354Ssam * the scheduling of multiple vaps for the purpose of selecting 1705178354Ssam * an operating channel. Specifically the following scenarios 1706178354Ssam * are handled: 1707178354Ssam * o only one vap can be selecting a channel so on transition to 1708178354Ssam * SCAN state if another vap is already scanning then 1709178354Ssam * mark the caller for later processing and return without 1710178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1711178354Ssam * o only one vap can be doing CAC of a channel so on transition to 1712178354Ssam * CAC state if another vap is already scanning for radar then 1713178354Ssam * mark the caller for later processing and return without 1714178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1715178354Ssam * o if another vap is already running when a request is made 1716178354Ssam * to SCAN then an operating channel has been chosen; bypass 1717178354Ssam * the scan and just join the channel 1718178354Ssam * 1719178354Ssam * Note that the state change call is done through the iv_newstate 1720178354Ssam * method pointer so any driver routine gets invoked. The driver 1721178354Ssam * will normally call back into operating mode-specific 1722178354Ssam * ieee80211_newstate routines (below) unless it needs to completely 1723178354Ssam * bypass the state machine (e.g. because the firmware has it's 1724178354Ssam * own idea how things should work). Bypassing the net80211 layer 1725178354Ssam * is usually a mistake and indicates lack of proper integration 1726178354Ssam * with the net80211 layer. 1727178354Ssam */ 1728117811Ssamstatic int 1729178354Ssamieee80211_new_state_locked(struct ieee80211vap *vap, 1730178354Ssam enum ieee80211_state nstate, int arg) 1731116742Ssam{ 1732178354Ssam struct ieee80211com *ic = vap->iv_ic; 1733178354Ssam struct ieee80211vap *vp; 1734117811Ssam enum ieee80211_state ostate; 1735191746Sthompsa int nrunning, nscanning; 1736116742Ssam 1737178354Ssam IEEE80211_LOCK_ASSERT(ic); 1738178354Ssam 1739191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) { 1740191746Sthompsa if (vap->iv_nstate == IEEE80211_S_INIT) { 1741191746Sthompsa /* 1742191746Sthompsa * XXX The vap is being stopped, do no allow any other 1743191746Sthompsa * state changes until this is completed. 1744191746Sthompsa */ 1745191746Sthompsa return -1; 1746191768Sthompsa } else if (vap->iv_state != vap->iv_nstate) { 1747191746Sthompsa#if 0 1748191768Sthompsa /* Warn if the previous state hasn't completed. */ 1749191768Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1750191768Sthompsa "%s: pending %s -> %s transition lost\n", __func__, 1751191768Sthompsa ieee80211_state_name[vap->iv_state], 1752191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1753191746Sthompsa#else 1754191768Sthompsa /* XXX temporarily enable to identify issues */ 1755191768Sthompsa if_printf(vap->iv_ifp, 1756191768Sthompsa "%s: pending %s -> %s transition lost\n", 1757191768Sthompsa __func__, ieee80211_state_name[vap->iv_state], 1758191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1759191746Sthompsa#endif 1760191768Sthompsa } 1761191746Sthompsa } 1762191746Sthompsa 1763178354Ssam nrunning = nscanning = 0; 1764178354Ssam /* XXX can track this state instead of calculating */ 1765178354Ssam TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) { 1766178354Ssam if (vp != vap) { 1767178354Ssam if (vp->iv_state >= IEEE80211_S_RUN) 1768178354Ssam nrunning++; 1769178354Ssam /* XXX doesn't handle bg scan */ 1770178354Ssam /* NB: CAC+AUTH+ASSOC treated like SCAN */ 1771178354Ssam else if (vp->iv_state > IEEE80211_S_INIT) 1772178354Ssam nscanning++; 1773178354Ssam } 1774178354Ssam } 1775178354Ssam ostate = vap->iv_state; 1776178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1777178354Ssam "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__, 1778178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate], 1779178354Ssam nrunning, nscanning); 1780116742Ssam switch (nstate) { 1781116742Ssam case IEEE80211_S_SCAN: 1782178354Ssam if (ostate == IEEE80211_S_INIT) { 1783178354Ssam /* 1784178354Ssam * INIT -> SCAN happens on initial bringup. 1785178354Ssam */ 1786178354Ssam KASSERT(!(nscanning && nrunning), 1787178354Ssam ("%d scanning and %d running", nscanning, nrunning)); 1788178354Ssam if (nscanning) { 1789116742Ssam /* 1790178354Ssam * Someone is scanning, defer our state 1791178354Ssam * change until the work has completed. 1792116742Ssam */ 1793178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1794178354Ssam "%s: defer %s -> %s\n", 1795178354Ssam __func__, ieee80211_state_name[ostate], 1796178354Ssam ieee80211_state_name[nstate]); 1797178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1798191746Sthompsa return 0; 1799116742Ssam } 1800178354Ssam if (nrunning) { 1801170530Ssam /* 1802178354Ssam * Someone is operating; just join the channel 1803178354Ssam * they have chosen. 1804170530Ssam */ 1805178354Ssam /* XXX kill arg? */ 1806178354Ssam /* XXX check each opmode, adhoc? */ 1807178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) 1808178354Ssam nstate = IEEE80211_S_SCAN; 1809178354Ssam else 1810178354Ssam nstate = IEEE80211_S_RUN; 1811138568Ssam#ifdef IEEE80211_DEBUG 1812178354Ssam if (nstate != IEEE80211_S_SCAN) { 1813178354Ssam IEEE80211_DPRINTF(vap, 1814178354Ssam IEEE80211_MSG_STATE, 1815178354Ssam "%s: override, now %s -> %s\n", 1816178354Ssam __func__, 1817178354Ssam ieee80211_state_name[ostate], 1818178354Ssam ieee80211_state_name[nstate]); 1819178354Ssam } 1820138568Ssam#endif 1821170530Ssam } 1822116742Ssam } 1823178354Ssam break; 1824178354Ssam case IEEE80211_S_RUN: 1825178354Ssam if (vap->iv_opmode == IEEE80211_M_WDS && 1826178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) && 1827178354Ssam nscanning) { 1828154736Ssam /* 1829178354Ssam * Legacy WDS with someone else scanning; don't 1830178354Ssam * go online until that completes as we should 1831178354Ssam * follow the other vap to the channel they choose. 1832154736Ssam */ 1833178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1834178354Ssam "%s: defer %s -> %s (legacy WDS)\n", __func__, 1835178354Ssam ieee80211_state_name[ostate], 1836178354Ssam ieee80211_state_name[nstate]); 1837178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1838191746Sthompsa return 0; 1839154736Ssam } 1840178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1841178354Ssam IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) && 1842178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_DFS) && 1843178354Ssam !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) { 1844178354Ssam /* 1845178354Ssam * This is a DFS channel, transition to CAC state 1846178354Ssam * instead of RUN. This allows us to initiate 1847178354Ssam * Channel Availability Check (CAC) as specified 1848178354Ssam * by 11h/DFS. 1849178354Ssam */ 1850178354Ssam nstate = IEEE80211_S_CAC; 1851178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1852178354Ssam "%s: override %s -> %s (DFS)\n", __func__, 1853178354Ssam ieee80211_state_name[ostate], 1854178354Ssam ieee80211_state_name[nstate]); 1855138568Ssam } 1856116742Ssam break; 1857178354Ssam case IEEE80211_S_INIT: 1858191955Sthompsa /* cancel any scan in progress */ 1859191955Sthompsa ieee80211_cancel_scan(vap); 1860178354Ssam if (ostate == IEEE80211_S_INIT ) { 1861178354Ssam /* XXX don't believe this */ 1862178354Ssam /* INIT -> INIT. nothing to do */ 1863178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1864178354Ssam } 1865178354Ssam /* fall thru... */ 1866172058Ssam default: 1867172058Ssam break; 1868116742Ssam } 1869191746Sthompsa /* defer the state change to a thread */ 1870191746Sthompsa vap->iv_nstate = nstate; 1871191746Sthompsa vap->iv_nstate_arg = arg; 1872191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT; 1873191746Sthompsa ieee80211_runtask(ic, &vap->iv_nstate_task); 1874191746Sthompsa return EINPROGRESS; 1875116742Ssam} 1876178354Ssam 1877178354Ssamint 1878178354Ssamieee80211_new_state(struct ieee80211vap *vap, 1879178354Ssam enum ieee80211_state nstate, int arg) 1880178354Ssam{ 1881178354Ssam struct ieee80211com *ic = vap->iv_ic; 1882178354Ssam int rc; 1883178354Ssam 1884178354Ssam IEEE80211_LOCK(ic); 1885178354Ssam rc = ieee80211_new_state_locked(vap, nstate, arg); 1886178354Ssam IEEE80211_UNLOCK(ic); 1887178354Ssam return rc; 1888178354Ssam} 1889