ieee80211_proto.c revision 218916
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 218916 2011-02-21 15:49:59Z adrian $"); 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; 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 /* 899170530Ssam * Select mode; we can be called early in which case we 900170530Ssam * always use auto mode. We know we'll be called when 901170530Ssam * entering the RUN state with bsschan setup properly 902170530Ssam * so state will eventually get set correctly 903170530Ssam */ 904170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 905170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 906170530Ssam else 907170530Ssam mode = IEEE80211_MODE_AUTO; 908138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 909138568Ssam switch (i) { 910138568Ssam case WME_AC_BK: 911170530Ssam pPhyParam = &phyParamForAC_BK[mode]; 912170530Ssam pBssPhyParam = &phyParamForAC_BK[mode]; 913138568Ssam break; 914138568Ssam case WME_AC_VI: 915170530Ssam pPhyParam = &phyParamForAC_VI[mode]; 916170530Ssam pBssPhyParam = &bssPhyParamForAC_VI[mode]; 917138568Ssam break; 918138568Ssam case WME_AC_VO: 919170530Ssam pPhyParam = &phyParamForAC_VO[mode]; 920170530Ssam pBssPhyParam = &bssPhyParamForAC_VO[mode]; 921138568Ssam break; 922138568Ssam case WME_AC_BE: 923138568Ssam default: 924170530Ssam pPhyParam = &phyParamForAC_BE[mode]; 925170530Ssam pBssPhyParam = &bssPhyParamForAC_BE[mode]; 926138568Ssam break; 927138568Ssam } 928138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 929138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 930188863Ssam setwmeparams(vap, "chan", i, wmep, pPhyParam); 931138568Ssam } else { 932188863Ssam setwmeparams(vap, "chan", i, wmep, pBssPhyParam); 933138568Ssam } 934138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 935188863Ssam setwmeparams(vap, "bss ", i, wmep, pBssPhyParam); 936138568Ssam } 937138568Ssam /* NB: check ic_bss to avoid NULL deref on initial attach */ 938178354Ssam if (vap->iv_bss != NULL) { 939138568Ssam /* 940138568Ssam * Calculate agressive mode switching threshold based 941138568Ssam * on beacon interval. This doesn't need locking since 942138568Ssam * we're only called before entering the RUN state at 943138568Ssam * which point we start sending beacon frames. 944138568Ssam */ 945138568Ssam wme->wme_hipri_switch_thresh = 946178354Ssam (HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100; 947188864Ssam wme->wme_flags &= ~WME_F_AGGRMODE; 948178354Ssam ieee80211_wme_updateparams(vap); 949138568Ssam } 950138568Ssam} 951138568Ssam 952178354Ssamvoid 953178354Ssamieee80211_wme_initparams(struct ieee80211vap *vap) 954178354Ssam{ 955178354Ssam struct ieee80211com *ic = vap->iv_ic; 956178354Ssam 957178354Ssam IEEE80211_LOCK(ic); 958178354Ssam ieee80211_wme_initparams_locked(vap); 959178354Ssam IEEE80211_UNLOCK(ic); 960178354Ssam} 961178354Ssam 962138568Ssam/* 963138568Ssam * Update WME parameters for ourself and the BSS. 964138568Ssam */ 965138568Ssamvoid 966178354Ssamieee80211_wme_updateparams_locked(struct ieee80211vap *vap) 967138568Ssam{ 968188863Ssam static const paramType aggrParam[IEEE80211_MODE_MAX] = { 969188780Ssam [IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 }, 970188780Ssam [IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 }, 971188780Ssam [IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 }, 972188780Ssam [IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 }, 973188780Ssam [IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 }, 974188780Ssam [IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 }, 975188780Ssam [IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 }, 976188780Ssam [IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 }, 977188782Ssam [IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 }, 978188782Ssam [IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 }, 979188780Ssam [IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 980188780Ssam [IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/ 981138568Ssam }; 982178354Ssam struct ieee80211com *ic = vap->iv_ic; 983138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 984138568Ssam const struct wmeParams *wmep; 985138568Ssam struct wmeParams *chanp, *bssp; 986170530Ssam enum ieee80211_phymode mode; 987138568Ssam int i; 988138568Ssam 989188863Ssam /* 990188863Ssam * Set up the channel access parameters for the physical 991188863Ssam * device. First populate the configured settings. 992188863Ssam */ 993138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 994138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[i]; 995138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 996138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 997138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 998138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 999138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1000138568Ssam 1001138568Ssam chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 1002138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 1003138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 1004138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 1005138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 1006138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 1007138568Ssam } 1008138568Ssam 1009138568Ssam /* 1010170530Ssam * Select mode; we can be called early in which case we 1011170530Ssam * always use auto mode. We know we'll be called when 1012170530Ssam * entering the RUN state with bsschan setup properly 1013170530Ssam * so state will eventually get set correctly 1014170530Ssam */ 1015170530Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) 1016170530Ssam mode = ieee80211_chan2mode(ic->ic_bsschan); 1017170530Ssam else 1018170530Ssam mode = IEEE80211_MODE_AUTO; 1019170530Ssam 1020170530Ssam /* 1021138568Ssam * This implements agressive mode as found in certain 1022138568Ssam * vendors' AP's. When there is significant high 1023138568Ssam * priority (VI/VO) traffic in the BSS throttle back BE 1024138568Ssam * traffic by using conservative parameters. Otherwise 1025138568Ssam * BE uses agressive params to optimize performance of 1026138568Ssam * legacy/non-QoS traffic. 1027138568Ssam */ 1028178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP && 1029156524Ssam (wme->wme_flags & WME_F_AGGRMODE) != 0) || 1030178354Ssam (vap->iv_opmode == IEEE80211_M_STA && 1031178354Ssam (vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0) || 1032178354Ssam (vap->iv_flags & IEEE80211_F_WME) == 0) { 1033138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1034138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1035138568Ssam 1036188863Ssam chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn; 1037138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 1038188863Ssam aggrParam[mode].logcwmin; 1039138568Ssam chanp->wmep_logcwmax = bssp->wmep_logcwmax = 1040188863Ssam aggrParam[mode].logcwmax; 1041138568Ssam chanp->wmep_txopLimit = bssp->wmep_txopLimit = 1042188863Ssam (vap->iv_flags & IEEE80211_F_BURST) ? 1043188863Ssam aggrParam[mode].txopLimit : 0; 1044178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1045188863Ssam "update %s (chan+bss) [acm %u aifsn %u logcwmin %u " 1046188863Ssam "logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE], 1047188863Ssam chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin, 1048188863Ssam chanp->wmep_logcwmax, chanp->wmep_txopLimit); 1049138568Ssam } 1050138568Ssam 1051178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1052156524Ssam ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 1053188780Ssam static const uint8_t logCwMin[IEEE80211_MODE_MAX] = { 1054188780Ssam [IEEE80211_MODE_AUTO] = 3, 1055188780Ssam [IEEE80211_MODE_11A] = 3, 1056188780Ssam [IEEE80211_MODE_11B] = 4, 1057188780Ssam [IEEE80211_MODE_11G] = 3, 1058188780Ssam [IEEE80211_MODE_FH] = 4, 1059188780Ssam [IEEE80211_MODE_TURBO_A] = 3, 1060188780Ssam [IEEE80211_MODE_TURBO_G] = 3, 1061188780Ssam [IEEE80211_MODE_STURBO_A] = 3, 1062188782Ssam [IEEE80211_MODE_HALF] = 3, 1063188782Ssam [IEEE80211_MODE_QUARTER] = 3, 1064188780Ssam [IEEE80211_MODE_11NA] = 3, 1065188780Ssam [IEEE80211_MODE_11NG] = 3, 1066138568Ssam }; 1067138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 1068138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 1069138568Ssam 1070170530Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode]; 1071178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1072188863Ssam "update %s (chan+bss) logcwmin %u\n", 1073188863Ssam ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin); 1074138568Ssam } 1075178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */ 1076138568Ssam /* 1077138568Ssam * Arrange for a beacon update and bump the parameter 1078138568Ssam * set number so associated stations load the new values. 1079138568Ssam */ 1080138568Ssam wme->wme_bssChanParams.cap_info = 1081138568Ssam (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 1082178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME); 1083138568Ssam } 1084138568Ssam 1085138568Ssam wme->wme_update(ic); 1086138568Ssam 1087178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, 1088188863Ssam "%s: WME params updated, cap_info 0x%x\n", __func__, 1089188863Ssam vap->iv_opmode == IEEE80211_M_STA ? 1090188863Ssam wme->wme_wmeChanParams.cap_info : 1091188863Ssam wme->wme_bssChanParams.cap_info); 1092138568Ssam} 1093138568Ssam 1094138568Ssamvoid 1095178354Ssamieee80211_wme_updateparams(struct ieee80211vap *vap) 1096138568Ssam{ 1097178354Ssam struct ieee80211com *ic = vap->iv_ic; 1098138568Ssam 1099138568Ssam if (ic->ic_caps & IEEE80211_C_WME) { 1100178354Ssam IEEE80211_LOCK(ic); 1101178354Ssam ieee80211_wme_updateparams_locked(vap); 1102178354Ssam IEEE80211_UNLOCK(ic); 1103138568Ssam } 1104138568Ssam} 1105138568Ssam 1106178354Ssamstatic void 1107178354Ssamparent_updown(void *arg, int npending) 1108178354Ssam{ 1109178354Ssam struct ifnet *parent = arg; 1110178354Ssam 1111178354Ssam parent->if_ioctl(parent, SIOCSIFFLAGS, NULL); 1112178354Ssam} 1113178354Ssam 1114191746Sthompsastatic void 1115191746Sthompsaupdate_mcast(void *arg, int npending) 1116191746Sthompsa{ 1117191746Sthompsa struct ieee80211com *ic = arg; 1118191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1119191746Sthompsa 1120191746Sthompsa ic->ic_update_mcast(parent); 1121191746Sthompsa} 1122191746Sthompsa 1123191746Sthompsastatic void 1124191746Sthompsaupdate_promisc(void *arg, int npending) 1125191746Sthompsa{ 1126191746Sthompsa struct ieee80211com *ic = arg; 1127191746Sthompsa struct ifnet *parent = ic->ic_ifp; 1128191746Sthompsa 1129191746Sthompsa ic->ic_update_promisc(parent); 1130191746Sthompsa} 1131191746Sthompsa 1132191746Sthompsastatic void 1133191746Sthompsaupdate_channel(void *arg, int npending) 1134191746Sthompsa{ 1135191746Sthompsa struct ieee80211com *ic = arg; 1136191746Sthompsa 1137191746Sthompsa ic->ic_set_channel(ic); 1138192468Ssam ieee80211_radiotap_chan_change(ic); 1139191746Sthompsa} 1140191746Sthompsa 1141170530Ssam/* 1142188533Sthompsa * Block until the parent is in a known state. This is 1143188533Sthompsa * used after any operations that dispatch a task (e.g. 1144188533Sthompsa * to auto-configure the parent device up/down). 1145188533Sthompsa */ 1146188533Sthompsavoid 1147188533Sthompsaieee80211_waitfor_parent(struct ieee80211com *ic) 1148188533Sthompsa{ 1149191746Sthompsa taskqueue_block(ic->ic_tq); 1150191746Sthompsa ieee80211_draintask(ic, &ic->ic_parent_task); 1151191746Sthompsa ieee80211_draintask(ic, &ic->ic_mcast_task); 1152191746Sthompsa ieee80211_draintask(ic, &ic->ic_promisc_task); 1153191746Sthompsa ieee80211_draintask(ic, &ic->ic_chan_task); 1154191746Sthompsa ieee80211_draintask(ic, &ic->ic_bmiss_task); 1155191746Sthompsa taskqueue_unblock(ic->ic_tq); 1156188533Sthompsa} 1157188533Sthompsa 1158188533Sthompsa/* 1159178354Ssam * Start a vap running. If this is the first vap to be 1160178354Ssam * set running on the underlying device then we 1161178354Ssam * automatically bring the device up. 1162170530Ssam */ 1163178354Ssamvoid 1164178354Ssamieee80211_start_locked(struct ieee80211vap *vap) 1165170530Ssam{ 1166178354Ssam struct ifnet *ifp = vap->iv_ifp; 1167178354Ssam struct ieee80211com *ic = vap->iv_ic; 1168178354Ssam struct ifnet *parent = ic->ic_ifp; 1169170530Ssam 1170178354Ssam IEEE80211_LOCK_ASSERT(ic); 1171178354Ssam 1172178354Ssam IEEE80211_DPRINTF(vap, 1173170530Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1174178354Ssam "start running, %d vaps running\n", ic->ic_nrunning); 1175170530Ssam 1176178354Ssam if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1177178354Ssam /* 1178178354Ssam * Mark us running. Note that it's ok to do this first; 1179178354Ssam * if we need to bring the parent device up we defer that 1180178354Ssam * to avoid dropping the com lock. We expect the device 1181178354Ssam * to respond to being marked up by calling back into us 1182178354Ssam * through ieee80211_start_all at which point we'll come 1183178354Ssam * back in here and complete the work. 1184178354Ssam */ 1185178354Ssam ifp->if_drv_flags |= IFF_DRV_RUNNING; 1186178354Ssam /* 1187178354Ssam * We are not running; if this we are the first vap 1188178354Ssam * to be brought up auto-up the parent if necessary. 1189178354Ssam */ 1190178354Ssam if (ic->ic_nrunning++ == 0 && 1191178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1192178354Ssam IEEE80211_DPRINTF(vap, 1193178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1194178354Ssam "%s: up parent %s\n", __func__, parent->if_xname); 1195178354Ssam parent->if_flags |= IFF_UP; 1196191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1197178354Ssam return; 1198178354Ssam } 1199178354Ssam } 1200170530Ssam /* 1201178354Ssam * If the parent is up and running, then kick the 1202178354Ssam * 802.11 state machine as appropriate. 1203170530Ssam */ 1204178354Ssam if ((parent->if_drv_flags & IFF_DRV_RUNNING) && 1205178354Ssam vap->iv_roaming != IEEE80211_ROAMING_MANUAL) { 1206178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 1207178354Ssam#if 0 1208178354Ssam /* XXX bypasses scan too easily; disable for now */ 1209178354Ssam /* 1210178354Ssam * Try to be intelligent about clocking the state 1211178354Ssam * machine. If we're currently in RUN state then 1212178354Ssam * we should be able to apply any new state/parameters 1213178354Ssam * simply by re-associating. Otherwise we need to 1214178354Ssam * re-scan to select an appropriate ap. 1215178354Ssam */ 1216178354Ssam if (vap->iv_state >= IEEE80211_S_RUN) 1217178354Ssam ieee80211_new_state_locked(vap, 1218178354Ssam IEEE80211_S_ASSOC, 1); 1219178354Ssam else 1220178354Ssam#endif 1221178354Ssam ieee80211_new_state_locked(vap, 1222178354Ssam IEEE80211_S_SCAN, 0); 1223170530Ssam } else { 1224170530Ssam /* 1225178354Ssam * For monitor+wds mode there's nothing to do but 1226178354Ssam * start running. Otherwise if this is the first 1227170530Ssam * vap to be brought up, start a scan which may be 1228170530Ssam * preempted if the station is locked to a particular 1229170530Ssam * channel. 1230170530Ssam */ 1231191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_REINIT; 1232178354Ssam if (vap->iv_opmode == IEEE80211_M_MONITOR || 1233178354Ssam vap->iv_opmode == IEEE80211_M_WDS) 1234178354Ssam ieee80211_new_state_locked(vap, 1235178354Ssam IEEE80211_S_RUN, -1); 1236178354Ssam else 1237178354Ssam ieee80211_new_state_locked(vap, 1238178354Ssam IEEE80211_S_SCAN, 0); 1239170530Ssam } 1240170530Ssam } 1241170530Ssam} 1242170530Ssam 1243170530Ssam/* 1244178354Ssam * Start a single vap. 1245178354Ssam */ 1246178354Ssamvoid 1247178354Ssamieee80211_init(void *arg) 1248178354Ssam{ 1249178354Ssam struct ieee80211vap *vap = arg; 1250178354Ssam 1251193348Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1252193348Ssam "%s\n", __func__); 1253178354Ssam 1254193348Ssam IEEE80211_LOCK(vap->iv_ic); 1255193348Ssam ieee80211_start_locked(vap); 1256193348Ssam IEEE80211_UNLOCK(vap->iv_ic); 1257178354Ssam} 1258178354Ssam 1259178354Ssam/* 1260178354Ssam * Start all runnable vap's on a device. 1261178354Ssam */ 1262178354Ssamvoid 1263178354Ssamieee80211_start_all(struct ieee80211com *ic) 1264178354Ssam{ 1265178354Ssam struct ieee80211vap *vap; 1266178354Ssam 1267178354Ssam IEEE80211_LOCK(ic); 1268178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1269178354Ssam struct ifnet *ifp = vap->iv_ifp; 1270178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1271178354Ssam ieee80211_start_locked(vap); 1272178354Ssam } 1273178354Ssam IEEE80211_UNLOCK(ic); 1274178354Ssam} 1275178354Ssam 1276178354Ssam/* 1277178354Ssam * Stop a vap. We force it down using the state machine 1278178354Ssam * then mark it's ifnet not running. If this is the last 1279178354Ssam * vap running on the underlying device then we close it 1280178354Ssam * too to insure it will be properly initialized when the 1281178354Ssam * next vap is brought up. 1282178354Ssam */ 1283178354Ssamvoid 1284178354Ssamieee80211_stop_locked(struct ieee80211vap *vap) 1285178354Ssam{ 1286178354Ssam struct ieee80211com *ic = vap->iv_ic; 1287178354Ssam struct ifnet *ifp = vap->iv_ifp; 1288178354Ssam struct ifnet *parent = ic->ic_ifp; 1289178354Ssam 1290178354Ssam IEEE80211_LOCK_ASSERT(ic); 1291178354Ssam 1292178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1293178354Ssam "stop running, %d vaps running\n", ic->ic_nrunning); 1294178354Ssam 1295178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1); 1296178354Ssam if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1297178354Ssam ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */ 1298178354Ssam if (--ic->ic_nrunning == 0 && 1299178354Ssam (parent->if_drv_flags & IFF_DRV_RUNNING)) { 1300178354Ssam IEEE80211_DPRINTF(vap, 1301178354Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 1302178354Ssam "down parent %s\n", parent->if_xname); 1303178354Ssam parent->if_flags &= ~IFF_UP; 1304191746Sthompsa ieee80211_runtask(ic, &ic->ic_parent_task); 1305178354Ssam } 1306178354Ssam } 1307178354Ssam} 1308178354Ssam 1309178354Ssamvoid 1310178354Ssamieee80211_stop(struct ieee80211vap *vap) 1311178354Ssam{ 1312178354Ssam struct ieee80211com *ic = vap->iv_ic; 1313178354Ssam 1314178354Ssam IEEE80211_LOCK(ic); 1315178354Ssam ieee80211_stop_locked(vap); 1316178354Ssam IEEE80211_UNLOCK(ic); 1317178354Ssam} 1318178354Ssam 1319178354Ssam/* 1320178354Ssam * Stop all vap's running on a device. 1321178354Ssam */ 1322178354Ssamvoid 1323178354Ssamieee80211_stop_all(struct ieee80211com *ic) 1324178354Ssam{ 1325178354Ssam struct ieee80211vap *vap; 1326178354Ssam 1327178354Ssam IEEE80211_LOCK(ic); 1328178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1329178354Ssam struct ifnet *ifp = vap->iv_ifp; 1330178354Ssam if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */ 1331178354Ssam ieee80211_stop_locked(vap); 1332178354Ssam } 1333178354Ssam IEEE80211_UNLOCK(ic); 1334188533Sthompsa 1335188533Sthompsa ieee80211_waitfor_parent(ic); 1336178354Ssam} 1337178354Ssam 1338178354Ssam/* 1339179391Ssam * Stop all vap's running on a device and arrange 1340179391Ssam * for those that were running to be resumed. 1341179391Ssam */ 1342179391Ssamvoid 1343179391Ssamieee80211_suspend_all(struct ieee80211com *ic) 1344179391Ssam{ 1345179391Ssam struct ieee80211vap *vap; 1346179391Ssam 1347179391Ssam IEEE80211_LOCK(ic); 1348179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1349179391Ssam struct ifnet *ifp = vap->iv_ifp; 1350179391Ssam if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */ 1351179391Ssam vap->iv_flags_ext |= IEEE80211_FEXT_RESUME; 1352179391Ssam ieee80211_stop_locked(vap); 1353179391Ssam } 1354179391Ssam } 1355179391Ssam IEEE80211_UNLOCK(ic); 1356188533Sthompsa 1357188533Sthompsa ieee80211_waitfor_parent(ic); 1358179391Ssam} 1359179391Ssam 1360179391Ssam/* 1361179391Ssam * Start all vap's marked for resume. 1362179391Ssam */ 1363179391Ssamvoid 1364179391Ssamieee80211_resume_all(struct ieee80211com *ic) 1365179391Ssam{ 1366179391Ssam struct ieee80211vap *vap; 1367179391Ssam 1368179391Ssam IEEE80211_LOCK(ic); 1369179391Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1370179391Ssam struct ifnet *ifp = vap->iv_ifp; 1371179391Ssam if (!IFNET_IS_UP_RUNNING(ifp) && 1372179391Ssam (vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) { 1373179391Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME; 1374179391Ssam ieee80211_start_locked(vap); 1375179391Ssam } 1376179391Ssam } 1377179391Ssam IEEE80211_UNLOCK(ic); 1378179391Ssam} 1379179391Ssam 1380153349Ssamvoid 1381153349Ssamieee80211_beacon_miss(struct ieee80211com *ic) 1382153349Ssam{ 1383191746Sthompsa IEEE80211_LOCK(ic); 1384191746Sthompsa if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1385191746Sthompsa /* Process in a taskq, the handler may reenter the driver */ 1386191746Sthompsa ieee80211_runtask(ic, &ic->ic_bmiss_task); 1387191746Sthompsa } 1388191746Sthompsa IEEE80211_UNLOCK(ic); 1389191746Sthompsa} 1390191746Sthompsa 1391191746Sthompsastatic void 1392191746Sthompsabeacon_miss(void *arg, int npending) 1393191746Sthompsa{ 1394191746Sthompsa struct ieee80211com *ic = arg; 1395178354Ssam struct ieee80211vap *vap; 1396153349Ssam 1397178354Ssam /* XXX locking */ 1398178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1399153349Ssam /* 1400178354Ssam * We only pass events through for sta vap's in RUN state; 1401178354Ssam * may be too restrictive but for now this saves all the 1402178354Ssam * handlers duplicating these checks. 1403153349Ssam */ 1404178354Ssam if (vap->iv_opmode == IEEE80211_M_STA && 1405193439Ssam vap->iv_state >= IEEE80211_S_RUN && 1406178354Ssam vap->iv_bmiss != NULL) 1407178354Ssam vap->iv_bmiss(vap); 1408153349Ssam } 1409153349Ssam} 1410153349Ssam 1411191746Sthompsastatic void 1412191746Sthompsabeacon_swmiss(void *arg, int npending) 1413191746Sthompsa{ 1414191746Sthompsa struct ieee80211vap *vap = arg; 1415191746Sthompsa 1416191746Sthompsa if (vap->iv_state != IEEE80211_S_RUN) 1417191746Sthompsa return; 1418191746Sthompsa 1419191746Sthompsa /* XXX Call multiple times if npending > zero? */ 1420191746Sthompsa vap->iv_bmiss(vap); 1421191746Sthompsa} 1422191746Sthompsa 1423154736Ssam/* 1424154736Ssam * Software beacon miss handling. Check if any beacons 1425154736Ssam * were received in the last period. If not post a 1426154736Ssam * beacon miss; otherwise reset the counter. 1427154736Ssam */ 1428178354Ssamvoid 1429154736Ssamieee80211_swbmiss(void *arg) 1430154736Ssam{ 1431178354Ssam struct ieee80211vap *vap = arg; 1432179217Ssam struct ieee80211com *ic = vap->iv_ic; 1433154736Ssam 1434179217Ssam /* XXX sleep state? */ 1435179217Ssam KASSERT(vap->iv_state == IEEE80211_S_RUN, 1436179217Ssam ("wrong state %d", vap->iv_state)); 1437179217Ssam 1438179217Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1439179217Ssam /* 1440179217Ssam * If scanning just ignore and reset state. If we get a 1441179217Ssam * bmiss after coming out of scan because we haven't had 1442179217Ssam * time to receive a beacon then we should probe the AP 1443179217Ssam * before posting a real bmiss (unless iv_bmiss_max has 1444179217Ssam * been artifiically lowered). A cleaner solution might 1445179217Ssam * be to disable the timer on scan start/end but to handle 1446179217Ssam * case of multiple sta vap's we'd need to disable the 1447179217Ssam * timers of all affected vap's. 1448179217Ssam */ 1449179217Ssam vap->iv_swbmiss_count = 0; 1450179217Ssam } else if (vap->iv_swbmiss_count == 0) { 1451178354Ssam if (vap->iv_bmiss != NULL) 1452191746Sthompsa ieee80211_runtask(ic, &vap->iv_swbmiss_task); 1453154736Ssam } else 1454178354Ssam vap->iv_swbmiss_count = 0; 1455178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 1456178354Ssam ieee80211_swbmiss, vap); 1457154736Ssam} 1458154736Ssam 1459178354Ssam/* 1460178354Ssam * Start an 802.11h channel switch. We record the parameters, 1461178354Ssam * mark the operation pending, notify each vap through the 1462178354Ssam * beacon update mechanism so it can update the beacon frame 1463178354Ssam * contents, and then switch vap's to CSA state to block outbound 1464178354Ssam * traffic. Devices that handle CSA directly can use the state 1465178354Ssam * switch to do the right thing so long as they call 1466178354Ssam * ieee80211_csa_completeswitch when it's time to complete the 1467178354Ssam * channel change. Devices that depend on the net80211 layer can 1468178354Ssam * use ieee80211_beacon_update to handle the countdown and the 1469178354Ssam * channel switch. 1470178354Ssam */ 1471178354Ssamvoid 1472178354Ssamieee80211_csa_startswitch(struct ieee80211com *ic, 1473178354Ssam struct ieee80211_channel *c, int mode, int count) 1474178354Ssam{ 1475178354Ssam struct ieee80211vap *vap; 1476178354Ssam 1477178354Ssam IEEE80211_LOCK_ASSERT(ic); 1478178354Ssam 1479178354Ssam ic->ic_csa_newchan = c; 1480193439Ssam ic->ic_csa_mode = mode; 1481178354Ssam ic->ic_csa_count = count; 1482178354Ssam ic->ic_flags |= IEEE80211_F_CSAPENDING; 1483178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1484178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP || 1485195618Srpaulo vap->iv_opmode == IEEE80211_M_IBSS || 1486195618Srpaulo vap->iv_opmode == IEEE80211_M_MBSS) 1487178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA); 1488178354Ssam /* switch to CSA state to block outbound traffic */ 1489178354Ssam if (vap->iv_state == IEEE80211_S_RUN) 1490178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0); 1491178354Ssam } 1492178354Ssam ieee80211_notify_csa(ic, c, mode, count); 1493178354Ssam} 1494178354Ssam 1495193439Ssamstatic void 1496193439Ssamcsa_completeswitch(struct ieee80211com *ic) 1497193439Ssam{ 1498193439Ssam struct ieee80211vap *vap; 1499193439Ssam 1500193439Ssam ic->ic_csa_newchan = NULL; 1501193439Ssam ic->ic_flags &= ~IEEE80211_F_CSAPENDING; 1502193439Ssam 1503193439Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1504193439Ssam if (vap->iv_state == IEEE80211_S_CSA) 1505193439Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1506193439Ssam} 1507193439Ssam 1508178354Ssam/* 1509178354Ssam * Complete an 802.11h channel switch started by ieee80211_csa_startswitch. 1510178354Ssam * We clear state and move all vap's in CSA state to RUN state 1511178354Ssam * so they can again transmit. 1512178354Ssam */ 1513178354Ssamvoid 1514178354Ssamieee80211_csa_completeswitch(struct ieee80211com *ic) 1515178354Ssam{ 1516178354Ssam IEEE80211_LOCK_ASSERT(ic); 1517178354Ssam 1518178354Ssam KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending")); 1519178354Ssam 1520178354Ssam ieee80211_setcurchan(ic, ic->ic_csa_newchan); 1521193439Ssam csa_completeswitch(ic); 1522193439Ssam} 1523178354Ssam 1524193439Ssam/* 1525193439Ssam * Cancel an 802.11h channel switch started by ieee80211_csa_startswitch. 1526193439Ssam * We clear state and move all vap's in CSA state to RUN state 1527193439Ssam * so they can again transmit. 1528193439Ssam */ 1529193439Ssamvoid 1530193439Ssamieee80211_csa_cancelswitch(struct ieee80211com *ic) 1531193439Ssam{ 1532193439Ssam IEEE80211_LOCK_ASSERT(ic); 1533193439Ssam 1534193439Ssam csa_completeswitch(ic); 1535178354Ssam} 1536178354Ssam 1537178354Ssam/* 1538178354Ssam * Complete a DFS CAC started by ieee80211_dfs_cac_start. 1539178354Ssam * We clear state and move all vap's in CAC state to RUN state. 1540178354Ssam */ 1541178354Ssamvoid 1542178354Ssamieee80211_cac_completeswitch(struct ieee80211vap *vap0) 1543178354Ssam{ 1544178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1545178354Ssam struct ieee80211vap *vap; 1546178354Ssam 1547178354Ssam IEEE80211_LOCK(ic); 1548178354Ssam /* 1549178354Ssam * Complete CAC state change for lead vap first; then 1550178354Ssam * clock all the other vap's waiting. 1551178354Ssam */ 1552178354Ssam KASSERT(vap0->iv_state == IEEE80211_S_CAC, 1553178354Ssam ("wrong state %d", vap0->iv_state)); 1554178354Ssam ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0); 1555178354Ssam 1556178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 1557178354Ssam if (vap->iv_state == IEEE80211_S_CAC) 1558178354Ssam ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0); 1559178354Ssam IEEE80211_UNLOCK(ic); 1560178354Ssam} 1561178354Ssam 1562178354Ssam/* 1563178354Ssam * Force all vap's other than the specified vap to the INIT state 1564178354Ssam * and mark them as waiting for a scan to complete. These vaps 1565178354Ssam * will be brought up when the scan completes and the scanning vap 1566178354Ssam * reaches RUN state by wakeupwaiting. 1567178354Ssam */ 1568154736Ssamstatic void 1569178354Ssammarkwaiting(struct ieee80211vap *vap0) 1570147765Ssam{ 1571178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1572178354Ssam struct ieee80211vap *vap; 1573147765Ssam 1574178354Ssam IEEE80211_LOCK_ASSERT(ic); 1575178354Ssam 1576191746Sthompsa /* 1577191746Sthompsa * A vap list entry can not disappear since we are running on the 1578191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1579191746Sthompsa * change task. 1580191746Sthompsa */ 1581178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1582178354Ssam if (vap == vap0) 1583178354Ssam continue; 1584178354Ssam if (vap->iv_state != IEEE80211_S_INIT) { 1585191746Sthompsa /* NB: iv_newstate may drop the lock */ 1586178354Ssam vap->iv_newstate(vap, IEEE80211_S_INIT, 0); 1587178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1588178354Ssam } 1589147765Ssam } 1590147765Ssam} 1591147765Ssam 1592178354Ssam/* 1593178354Ssam * Wakeup all vap's waiting for a scan to complete. This is the 1594178354Ssam * companion to markwaiting (above) and is used to coordinate 1595178354Ssam * multiple vaps scanning. 1596191746Sthompsa * This is called from the state taskqueue. 1597178354Ssam */ 1598147765Ssamstatic void 1599178354Ssamwakeupwaiting(struct ieee80211vap *vap0) 1600147765Ssam{ 1601178354Ssam struct ieee80211com *ic = vap0->iv_ic; 1602178354Ssam struct ieee80211vap *vap; 1603147765Ssam 1604178354Ssam IEEE80211_LOCK_ASSERT(ic); 1605178354Ssam 1606191746Sthompsa /* 1607191746Sthompsa * A vap list entry can not disappear since we are running on the 1608191746Sthompsa * taskqueue and a vap destroy will queue and drain another state 1609191746Sthompsa * change task. 1610191746Sthompsa */ 1611178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 1612178354Ssam if (vap == vap0) 1613178354Ssam continue; 1614178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) { 1615178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1616178354Ssam /* NB: sta's cannot go INIT->RUN */ 1617191746Sthompsa /* NB: iv_newstate may drop the lock */ 1618178354Ssam vap->iv_newstate(vap, 1619178354Ssam vap->iv_opmode == IEEE80211_M_STA ? 1620178354Ssam IEEE80211_S_SCAN : IEEE80211_S_RUN, 0); 1621178354Ssam } 1622178354Ssam } 1623147765Ssam} 1624147765Ssam 1625170530Ssam/* 1626178354Ssam * Handle post state change work common to all operating modes. 1627170530Ssam */ 1628170530Ssamstatic void 1629191746Sthompsaieee80211_newstate_cb(void *xvap, int npending) 1630170530Ssam{ 1631191746Sthompsa struct ieee80211vap *vap = xvap; 1632178354Ssam struct ieee80211com *ic = vap->iv_ic; 1633191746Sthompsa enum ieee80211_state nstate, ostate; 1634191746Sthompsa int arg, rc; 1635178354Ssam 1636191746Sthompsa IEEE80211_LOCK(ic); 1637191746Sthompsa nstate = vap->iv_nstate; 1638191746Sthompsa arg = vap->iv_nstate_arg; 1639178354Ssam 1640191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) { 1641191746Sthompsa /* 1642191746Sthompsa * We have been requested to drop back to the INIT before 1643191746Sthompsa * proceeding to the new state. 1644191746Sthompsa */ 1645191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1646191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1647191746Sthompsa ieee80211_state_name[vap->iv_state], 1648191746Sthompsa ieee80211_state_name[IEEE80211_S_INIT], arg); 1649191746Sthompsa vap->iv_newstate(vap, IEEE80211_S_INIT, arg); 1650191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT; 1651191746Sthompsa } 1652191746Sthompsa 1653191746Sthompsa ostate = vap->iv_state; 1654191746Sthompsa if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) { 1655191746Sthompsa /* 1656191746Sthompsa * SCAN was forced; e.g. on beacon miss. Force other running 1657191746Sthompsa * vap's to INIT state and mark them as waiting for the scan to 1658191746Sthompsa * complete. This insures they don't interfere with our 1659191746Sthompsa * scanning. Since we are single threaded the vaps can not 1660191746Sthompsa * transition again while we are executing. 1661191746Sthompsa * 1662191746Sthompsa * XXX not always right, assumes ap follows sta 1663191746Sthompsa */ 1664191746Sthompsa markwaiting(vap); 1665191746Sthompsa } 1666178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1667191746Sthompsa "%s: %s -> %s arg %d\n", __func__, 1668191746Sthompsa ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); 1669178354Ssam 1670191746Sthompsa rc = vap->iv_newstate(vap, nstate, arg); 1671191746Sthompsa vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT; 1672191746Sthompsa if (rc != 0) { 1673191746Sthompsa /* State transition failed */ 1674191746Sthompsa KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred")); 1675191746Sthompsa KASSERT(nstate != IEEE80211_S_INIT, 1676191746Sthompsa ("INIT state change failed")); 1677191746Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1678191746Sthompsa "%s: %s returned error %d\n", __func__, 1679191746Sthompsa ieee80211_state_name[nstate], rc); 1680191746Sthompsa goto done; 1681191746Sthompsa } 1682191746Sthompsa 1683191746Sthompsa /* No actual transition, skip post processing */ 1684191746Sthompsa if (ostate == nstate) 1685191746Sthompsa goto done; 1686191746Sthompsa 1687178354Ssam if (nstate == IEEE80211_S_RUN) { 1688178354Ssam /* 1689178354Ssam * OACTIVE may be set on the vap if the upper layer 1690178354Ssam * tried to transmit (e.g. IPv6 NDP) before we reach 1691178354Ssam * RUN state. Clear it and restart xmit. 1692178354Ssam * 1693178354Ssam * Note this can also happen as a result of SLEEP->RUN 1694178354Ssam * (i.e. coming out of power save mode). 1695178354Ssam */ 1696178354Ssam vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1697178354Ssam if_start(vap->iv_ifp); 1698178354Ssam 1699178354Ssam /* bring up any vaps waiting on us */ 1700178354Ssam wakeupwaiting(vap); 1701178354Ssam } else if (nstate == IEEE80211_S_INIT) { 1702178354Ssam /* 1703178354Ssam * Flush the scan cache if we did the last scan (XXX?) 1704178354Ssam * and flush any frames on send queues from this vap. 1705178354Ssam * Note the mgt q is used only for legacy drivers and 1706178354Ssam * will go away shortly. 1707178354Ssam */ 1708178354Ssam ieee80211_scan_flush(vap); 1709178354Ssam 1710178354Ssam /* XXX NB: cast for altq */ 1711178354Ssam ieee80211_flush_ifq((struct ifqueue *)&ic->ic_ifp->if_snd, vap); 1712170530Ssam } 1713191746Sthompsadone: 1714191746Sthompsa IEEE80211_UNLOCK(ic); 1715170530Ssam} 1716170530Ssam 1717178354Ssam/* 1718178354Ssam * Public interface for initiating a state machine change. 1719178354Ssam * This routine single-threads the request and coordinates 1720178354Ssam * the scheduling of multiple vaps for the purpose of selecting 1721178354Ssam * an operating channel. Specifically the following scenarios 1722178354Ssam * are handled: 1723178354Ssam * o only one vap can be selecting a channel so on transition to 1724178354Ssam * SCAN state if another vap is already scanning then 1725178354Ssam * mark the caller for later processing and return without 1726178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1727178354Ssam * o only one vap can be doing CAC of a channel so on transition to 1728178354Ssam * CAC state if another vap is already scanning for radar then 1729178354Ssam * mark the caller for later processing and return without 1730178354Ssam * doing anything (XXX? expectations by caller of synchronous operation) 1731178354Ssam * o if another vap is already running when a request is made 1732178354Ssam * to SCAN then an operating channel has been chosen; bypass 1733178354Ssam * the scan and just join the channel 1734178354Ssam * 1735178354Ssam * Note that the state change call is done through the iv_newstate 1736178354Ssam * method pointer so any driver routine gets invoked. The driver 1737178354Ssam * will normally call back into operating mode-specific 1738178354Ssam * ieee80211_newstate routines (below) unless it needs to completely 1739178354Ssam * bypass the state machine (e.g. because the firmware has it's 1740178354Ssam * own idea how things should work). Bypassing the net80211 layer 1741178354Ssam * is usually a mistake and indicates lack of proper integration 1742178354Ssam * with the net80211 layer. 1743178354Ssam */ 1744117811Ssamstatic int 1745178354Ssamieee80211_new_state_locked(struct ieee80211vap *vap, 1746178354Ssam enum ieee80211_state nstate, int arg) 1747116742Ssam{ 1748178354Ssam struct ieee80211com *ic = vap->iv_ic; 1749178354Ssam struct ieee80211vap *vp; 1750117811Ssam enum ieee80211_state ostate; 1751191746Sthompsa int nrunning, nscanning; 1752116742Ssam 1753178354Ssam IEEE80211_LOCK_ASSERT(ic); 1754178354Ssam 1755191746Sthompsa if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) { 1756191746Sthompsa if (vap->iv_nstate == IEEE80211_S_INIT) { 1757191746Sthompsa /* 1758191746Sthompsa * XXX The vap is being stopped, do no allow any other 1759191746Sthompsa * state changes until this is completed. 1760191746Sthompsa */ 1761191746Sthompsa return -1; 1762191768Sthompsa } else if (vap->iv_state != vap->iv_nstate) { 1763191746Sthompsa#if 0 1764191768Sthompsa /* Warn if the previous state hasn't completed. */ 1765191768Sthompsa IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1766191768Sthompsa "%s: pending %s -> %s transition lost\n", __func__, 1767191768Sthompsa ieee80211_state_name[vap->iv_state], 1768191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1769191746Sthompsa#else 1770191768Sthompsa /* XXX temporarily enable to identify issues */ 1771191768Sthompsa if_printf(vap->iv_ifp, 1772191768Sthompsa "%s: pending %s -> %s transition lost\n", 1773191768Sthompsa __func__, ieee80211_state_name[vap->iv_state], 1774191768Sthompsa ieee80211_state_name[vap->iv_nstate]); 1775191746Sthompsa#endif 1776191768Sthompsa } 1777191746Sthompsa } 1778191746Sthompsa 1779178354Ssam nrunning = nscanning = 0; 1780178354Ssam /* XXX can track this state instead of calculating */ 1781178354Ssam TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) { 1782178354Ssam if (vp != vap) { 1783178354Ssam if (vp->iv_state >= IEEE80211_S_RUN) 1784178354Ssam nrunning++; 1785178354Ssam /* XXX doesn't handle bg scan */ 1786178354Ssam /* NB: CAC+AUTH+ASSOC treated like SCAN */ 1787178354Ssam else if (vp->iv_state > IEEE80211_S_INIT) 1788178354Ssam nscanning++; 1789178354Ssam } 1790178354Ssam } 1791178354Ssam ostate = vap->iv_state; 1792178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1793178354Ssam "%s: %s -> %s (nrunning %d nscanning %d)\n", __func__, 1794178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate], 1795178354Ssam nrunning, nscanning); 1796116742Ssam switch (nstate) { 1797116742Ssam case IEEE80211_S_SCAN: 1798178354Ssam if (ostate == IEEE80211_S_INIT) { 1799178354Ssam /* 1800178354Ssam * INIT -> SCAN happens on initial bringup. 1801178354Ssam */ 1802178354Ssam KASSERT(!(nscanning && nrunning), 1803178354Ssam ("%d scanning and %d running", nscanning, nrunning)); 1804178354Ssam if (nscanning) { 1805116742Ssam /* 1806178354Ssam * Someone is scanning, defer our state 1807178354Ssam * change until the work has completed. 1808116742Ssam */ 1809178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1810178354Ssam "%s: defer %s -> %s\n", 1811178354Ssam __func__, ieee80211_state_name[ostate], 1812178354Ssam ieee80211_state_name[nstate]); 1813178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1814191746Sthompsa return 0; 1815116742Ssam } 1816178354Ssam if (nrunning) { 1817170530Ssam /* 1818178354Ssam * Someone is operating; just join the channel 1819178354Ssam * they have chosen. 1820170530Ssam */ 1821178354Ssam /* XXX kill arg? */ 1822178354Ssam /* XXX check each opmode, adhoc? */ 1823178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) 1824178354Ssam nstate = IEEE80211_S_SCAN; 1825178354Ssam else 1826178354Ssam nstate = IEEE80211_S_RUN; 1827138568Ssam#ifdef IEEE80211_DEBUG 1828178354Ssam if (nstate != IEEE80211_S_SCAN) { 1829178354Ssam IEEE80211_DPRINTF(vap, 1830178354Ssam IEEE80211_MSG_STATE, 1831178354Ssam "%s: override, now %s -> %s\n", 1832178354Ssam __func__, 1833178354Ssam ieee80211_state_name[ostate], 1834178354Ssam ieee80211_state_name[nstate]); 1835178354Ssam } 1836138568Ssam#endif 1837170530Ssam } 1838116742Ssam } 1839178354Ssam break; 1840178354Ssam case IEEE80211_S_RUN: 1841178354Ssam if (vap->iv_opmode == IEEE80211_M_WDS && 1842178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) && 1843178354Ssam nscanning) { 1844154736Ssam /* 1845178354Ssam * Legacy WDS with someone else scanning; don't 1846178354Ssam * go online until that completes as we should 1847178354Ssam * follow the other vap to the channel they choose. 1848154736Ssam */ 1849178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1850178354Ssam "%s: defer %s -> %s (legacy WDS)\n", __func__, 1851178354Ssam ieee80211_state_name[ostate], 1852178354Ssam ieee80211_state_name[nstate]); 1853178354Ssam vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT; 1854191746Sthompsa return 0; 1855154736Ssam } 1856178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP && 1857178354Ssam IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) && 1858178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_DFS) && 1859178354Ssam !IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) { 1860178354Ssam /* 1861178354Ssam * This is a DFS channel, transition to CAC state 1862178354Ssam * instead of RUN. This allows us to initiate 1863178354Ssam * Channel Availability Check (CAC) as specified 1864178354Ssam * by 11h/DFS. 1865178354Ssam */ 1866178354Ssam nstate = IEEE80211_S_CAC; 1867178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 1868178354Ssam "%s: override %s -> %s (DFS)\n", __func__, 1869178354Ssam ieee80211_state_name[ostate], 1870178354Ssam ieee80211_state_name[nstate]); 1871138568Ssam } 1872116742Ssam break; 1873178354Ssam case IEEE80211_S_INIT: 1874191955Sthompsa /* cancel any scan in progress */ 1875191955Sthompsa ieee80211_cancel_scan(vap); 1876178354Ssam if (ostate == IEEE80211_S_INIT ) { 1877178354Ssam /* XXX don't believe this */ 1878178354Ssam /* INIT -> INIT. nothing to do */ 1879178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT; 1880178354Ssam } 1881178354Ssam /* fall thru... */ 1882172058Ssam default: 1883172058Ssam break; 1884116742Ssam } 1885191746Sthompsa /* defer the state change to a thread */ 1886191746Sthompsa vap->iv_nstate = nstate; 1887191746Sthompsa vap->iv_nstate_arg = arg; 1888191746Sthompsa vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT; 1889191746Sthompsa ieee80211_runtask(ic, &vap->iv_nstate_task); 1890191746Sthompsa return EINPROGRESS; 1891116742Ssam} 1892178354Ssam 1893178354Ssamint 1894178354Ssamieee80211_new_state(struct ieee80211vap *vap, 1895178354Ssam enum ieee80211_state nstate, int arg) 1896178354Ssam{ 1897178354Ssam struct ieee80211com *ic = vap->iv_ic; 1898178354Ssam int rc; 1899178354Ssam 1900178354Ssam IEEE80211_LOCK(ic); 1901178354Ssam rc = ieee80211_new_state_locked(vap, nstate, arg); 1902178354Ssam IEEE80211_UNLOCK(ic); 1903178354Ssam return rc; 1904178354Ssam} 1905