ieee80211_proto.c revision 165569
1116742Ssam/*- 2116904Ssam * Copyright (c) 2001 Atsushi Onoe 3139530Ssam * Copyright (c) 2002-2005 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. 14116904Ssam * 3. The name of the author may not be used to endorse or promote products 15116904Ssam * derived from this software without specific prior written permission. 16116742Ssam * 17116742Ssam * Alternatively, this software may be distributed under the terms of the 18116742Ssam * GNU General Public License ("GPL") version 2 as published by the Free 19116742Ssam * Software Foundation. 20116742Ssam * 21116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22116904Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23116904Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24116904Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25116904Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26116904Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27116904Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28116904Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29116904Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30116904Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31116742Ssam */ 32116742Ssam 33116742Ssam#include <sys/cdefs.h> 34116742Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_proto.c 165569 2006-12-27 18:46:18Z sam $"); 35116742Ssam 36116742Ssam/* 37116742Ssam * IEEE 802.11 protocol support. 38116742Ssam */ 39116742Ssam 40116742Ssam#include "opt_inet.h" 41116742Ssam 42116742Ssam#include <sys/param.h> 43138568Ssam#include <sys/kernel.h> 44116742Ssam#include <sys/systm.h> 45138568Ssam 46116742Ssam#include <sys/socket.h> 47116742Ssam 48116742Ssam#include <net/if.h> 49116742Ssam#include <net/if_media.h> 50138568Ssam#include <net/ethernet.h> /* XXX for ether_sprintf */ 51116742Ssam 52116742Ssam#include <net80211/ieee80211_var.h> 53116742Ssam 54138568Ssam/* XXX tunables */ 55138568Ssam#define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */ 56138568Ssam#define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */ 57116742Ssam 58116742Ssam#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 59116742Ssam 60116742Ssamconst char *ieee80211_mgt_subtype_name[] = { 61116742Ssam "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp", 62116742Ssam "probe_req", "probe_resp", "reserved#6", "reserved#7", 63116742Ssam "beacon", "atim", "disassoc", "auth", 64116742Ssam "deauth", "reserved#13", "reserved#14", "reserved#15" 65116742Ssam}; 66138568Ssamconst char *ieee80211_ctl_subtype_name[] = { 67138568Ssam "reserved#0", "reserved#1", "reserved#2", "reserved#3", 68138568Ssam "reserved#3", "reserved#5", "reserved#6", "reserved#7", 69138568Ssam "reserved#8", "reserved#9", "ps_poll", "rts", 70138568Ssam "cts", "ack", "cf_end", "cf_end_ack" 71138568Ssam}; 72117811Ssamconst char *ieee80211_state_name[IEEE80211_S_MAX] = { 73117811Ssam "INIT", /* IEEE80211_S_INIT */ 74117811Ssam "SCAN", /* IEEE80211_S_SCAN */ 75117811Ssam "AUTH", /* IEEE80211_S_AUTH */ 76117811Ssam "ASSOC", /* IEEE80211_S_ASSOC */ 77117811Ssam "RUN" /* IEEE80211_S_RUN */ 78117811Ssam}; 79138568Ssamconst char *ieee80211_wme_acnames[] = { 80138568Ssam "WME_AC_BE", 81138568Ssam "WME_AC_BK", 82138568Ssam "WME_AC_VI", 83138568Ssam "WME_AC_VO", 84138568Ssam "WME_UPSD", 85138568Ssam}; 86116742Ssam 87117811Ssamstatic int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int); 88117811Ssam 89116742Ssamvoid 90138568Ssamieee80211_proto_attach(struct ieee80211com *ic) 91116742Ssam{ 92138568Ssam struct ifnet *ifp = ic->ic_ifp; 93116742Ssam 94138568Ssam /* XXX room for crypto */ 95138568Ssam ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4); 96116742Ssam 97116742Ssam ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT; 98148291Ssam ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT; 99148290Ssam ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE; 100153349Ssam ic->ic_bmiss_max = IEEE80211_BMISS_MAX; 101154736Ssam callout_init(&ic->ic_swbmiss, CALLOUT_MPSAFE); 102153346Ssam ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT; 103127648Ssam ic->ic_protmode = IEEE80211_PROT_CTSONLY; 104138568Ssam ic->ic_roaming = IEEE80211_ROAMING_AUTO; 105116742Ssam 106138568Ssam ic->ic_wme.wme_hipri_switch_hysteresis = 107138568Ssam AGGRESSIVE_MODE_SWITCH_HYSTERESIS; 108138568Ssam 109121816Sbrooks mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF); 110116742Ssam 111117811Ssam /* protocol state change handler */ 112117811Ssam ic->ic_newstate = ieee80211_newstate; 113117811Ssam 114116742Ssam /* initialize management frame handlers */ 115116742Ssam ic->ic_recv_mgmt = ieee80211_recv_mgmt; 116116742Ssam ic->ic_send_mgmt = ieee80211_send_mgmt; 117160690Ssam ic->ic_raw_xmit = ieee80211_raw_xmit; 118116742Ssam} 119116742Ssam 120116742Ssamvoid 121138568Ssamieee80211_proto_detach(struct ieee80211com *ic) 122116742Ssam{ 123116742Ssam 124138568Ssam /* 125138568Ssam * This should not be needed as we detach when reseting 126138568Ssam * the state but be conservative here since the 127138568Ssam * authenticator may do things like spawn kernel threads. 128138568Ssam */ 129138568Ssam if (ic->ic_auth->ia_detach) 130138568Ssam ic->ic_auth->ia_detach(ic); 131138568Ssam 132116742Ssam IF_DRAIN(&ic->ic_mgtq); 133116742Ssam mtx_destroy(&ic->ic_mgtq.ifq_mtx); 134138568Ssam 135138568Ssam /* 136138568Ssam * Detach any ACL'ator. 137138568Ssam */ 138138568Ssam if (ic->ic_acl != NULL) 139138568Ssam ic->ic_acl->iac_detach(ic); 140116742Ssam} 141116742Ssam 142138568Ssam/* 143138568Ssam * Simple-minded authenticator module support. 144138568Ssam */ 145138568Ssam 146138568Ssam#define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1) 147138568Ssam/* XXX well-known names */ 148138568Ssamstatic const char *auth_modnames[IEEE80211_AUTH_MAX] = { 149138568Ssam "wlan_internal", /* IEEE80211_AUTH_NONE */ 150138568Ssam "wlan_internal", /* IEEE80211_AUTH_OPEN */ 151138568Ssam "wlan_internal", /* IEEE80211_AUTH_SHARED */ 152138568Ssam "wlan_xauth", /* IEEE80211_AUTH_8021X */ 153138568Ssam "wlan_internal", /* IEEE80211_AUTH_AUTO */ 154138568Ssam "wlan_xauth", /* IEEE80211_AUTH_WPA */ 155138568Ssam}; 156138568Ssamstatic const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX]; 157138568Ssam 158138568Ssamstatic const struct ieee80211_authenticator auth_internal = { 159138568Ssam .ia_name = "wlan_internal", 160138568Ssam .ia_attach = NULL, 161138568Ssam .ia_detach = NULL, 162138568Ssam .ia_node_join = NULL, 163138568Ssam .ia_node_leave = NULL, 164138568Ssam}; 165138568Ssam 166138568Ssam/* 167138568Ssam * Setup internal authenticators once; they are never unregistered. 168138568Ssam */ 169138568Ssamstatic void 170138568Ssamieee80211_auth_setup(void) 171138568Ssam{ 172138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal); 173138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal); 174138568Ssam ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal); 175138568Ssam} 176138568SsamSYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL); 177138568Ssam 178138568Ssamconst struct ieee80211_authenticator * 179138568Ssamieee80211_authenticator_get(int auth) 180138568Ssam{ 181138568Ssam if (auth >= IEEE80211_AUTH_MAX) 182138568Ssam return NULL; 183138568Ssam if (authenticators[auth] == NULL) 184138568Ssam ieee80211_load_module(auth_modnames[auth]); 185138568Ssam return authenticators[auth]; 186138568Ssam} 187138568Ssam 188116742Ssamvoid 189138568Ssamieee80211_authenticator_register(int type, 190138568Ssam const struct ieee80211_authenticator *auth) 191116742Ssam{ 192138568Ssam if (type >= IEEE80211_AUTH_MAX) 193138568Ssam return; 194138568Ssam authenticators[type] = auth; 195138568Ssam} 196138568Ssam 197138568Ssamvoid 198138568Ssamieee80211_authenticator_unregister(int type) 199138568Ssam{ 200138568Ssam 201138568Ssam if (type >= IEEE80211_AUTH_MAX) 202138568Ssam return; 203138568Ssam authenticators[type] = NULL; 204138568Ssam} 205138568Ssam 206138568Ssam/* 207138568Ssam * Very simple-minded ACL module support. 208138568Ssam */ 209138568Ssam/* XXX just one for now */ 210138568Ssamstatic const struct ieee80211_aclator *acl = NULL; 211138568Ssam 212138568Ssamvoid 213138568Ssamieee80211_aclator_register(const struct ieee80211_aclator *iac) 214138568Ssam{ 215138568Ssam printf("wlan: %s acl policy registered\n", iac->iac_name); 216138568Ssam acl = iac; 217138568Ssam} 218138568Ssam 219138568Ssamvoid 220138568Ssamieee80211_aclator_unregister(const struct ieee80211_aclator *iac) 221138568Ssam{ 222138568Ssam if (acl == iac) 223138568Ssam acl = NULL; 224138568Ssam printf("wlan: %s acl policy unregistered\n", iac->iac_name); 225138568Ssam} 226138568Ssam 227138568Ssamconst struct ieee80211_aclator * 228138568Ssamieee80211_aclator_get(const char *name) 229138568Ssam{ 230138568Ssam if (acl == NULL) 231138568Ssam ieee80211_load_module("wlan_acl"); 232138568Ssam return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL; 233138568Ssam} 234138568Ssam 235138568Ssamvoid 236138568Ssamieee80211_print_essid(const u_int8_t *essid, int len) 237138568Ssam{ 238138568Ssam const u_int8_t *p; 239116742Ssam int i; 240116742Ssam 241116742Ssam if (len > IEEE80211_NWID_LEN) 242116742Ssam len = IEEE80211_NWID_LEN; 243116742Ssam /* determine printable or not */ 244116742Ssam for (i = 0, p = essid; i < len; i++, p++) { 245116742Ssam if (*p < ' ' || *p > 0x7e) 246116742Ssam break; 247116742Ssam } 248116742Ssam if (i == len) { 249116742Ssam printf("\""); 250116742Ssam for (i = 0, p = essid; i < len; i++, p++) 251116742Ssam printf("%c", *p); 252116742Ssam printf("\""); 253116742Ssam } else { 254116742Ssam printf("0x"); 255116742Ssam for (i = 0, p = essid; i < len; i++, p++) 256116742Ssam printf("%02x", *p); 257116742Ssam } 258116742Ssam} 259116742Ssam 260116742Ssamvoid 261138568Ssamieee80211_dump_pkt(const u_int8_t *buf, int len, int rate, int rssi) 262116742Ssam{ 263138568Ssam const struct ieee80211_frame *wh; 264116742Ssam int i; 265116742Ssam 266138568Ssam wh = (const struct ieee80211_frame *)buf; 267116742Ssam switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) { 268116742Ssam case IEEE80211_FC1_DIR_NODS: 269116742Ssam printf("NODS %s", ether_sprintf(wh->i_addr2)); 270116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 271116742Ssam printf("(%s)", ether_sprintf(wh->i_addr3)); 272116742Ssam break; 273116742Ssam case IEEE80211_FC1_DIR_TODS: 274116742Ssam printf("TODS %s", ether_sprintf(wh->i_addr2)); 275116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 276116742Ssam printf("(%s)", ether_sprintf(wh->i_addr1)); 277116742Ssam break; 278116742Ssam case IEEE80211_FC1_DIR_FROMDS: 279116742Ssam printf("FRDS %s", ether_sprintf(wh->i_addr3)); 280116742Ssam printf("->%s", ether_sprintf(wh->i_addr1)); 281116742Ssam printf("(%s)", ether_sprintf(wh->i_addr2)); 282116742Ssam break; 283116742Ssam case IEEE80211_FC1_DIR_DSTODS: 284138568Ssam printf("DSDS %s", ether_sprintf((const u_int8_t *)&wh[1])); 285116742Ssam printf("->%s", ether_sprintf(wh->i_addr3)); 286116742Ssam printf("(%s", ether_sprintf(wh->i_addr2)); 287116742Ssam printf("->%s)", ether_sprintf(wh->i_addr1)); 288116742Ssam break; 289116742Ssam } 290116742Ssam switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) { 291116742Ssam case IEEE80211_FC0_TYPE_DATA: 292116742Ssam printf(" data"); 293116742Ssam break; 294116742Ssam case IEEE80211_FC0_TYPE_MGT: 295116742Ssam printf(" %s", ieee80211_mgt_subtype_name[ 296116742Ssam (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 297116742Ssam >> IEEE80211_FC0_SUBTYPE_SHIFT]); 298116742Ssam break; 299116742Ssam default: 300116742Ssam printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK); 301116742Ssam break; 302116742Ssam } 303138568Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 304138568Ssam int i; 305138568Ssam printf(" WEP [IV"); 306138568Ssam for (i = 0; i < IEEE80211_WEP_IVLEN; i++) 307138568Ssam printf(" %.02x", buf[sizeof(*wh)+i]); 308138568Ssam printf(" KID %u]", buf[sizeof(*wh)+i] >> 6); 309138568Ssam } 310116742Ssam if (rate >= 0) 311116742Ssam printf(" %dM", rate / 2); 312116742Ssam if (rssi >= 0) 313116742Ssam printf(" +%d", rssi); 314116742Ssam printf("\n"); 315116742Ssam if (len > 0) { 316116742Ssam for (i = 0; i < len; i++) { 317116742Ssam if ((i & 1) == 0) 318116742Ssam printf(" "); 319116742Ssam printf("%02x", buf[i]); 320116742Ssam } 321116742Ssam printf("\n"); 322116742Ssam } 323116742Ssam} 324116742Ssam 325116742Ssamint 326148299Ssamieee80211_fix_rate(struct ieee80211_node *ni, int flags) 327116742Ssam{ 328116742Ssam#define RV(v) ((v) & IEEE80211_RATE_VAL) 329148299Ssam struct ieee80211com *ic = ni->ni_ic; 330116742Ssam int i, j, ignore, error; 331138568Ssam int okrate, badrate, fixedrate; 332165569Ssam const struct ieee80211_rateset *srs; 333165569Ssam struct ieee80211_rateset *nrs; 334116742Ssam u_int8_t r; 335116742Ssam 336138568Ssam /* 337138568Ssam * If the fixed rate check was requested but no 338138568Ssam * fixed has been defined then just remove it. 339138568Ssam */ 340148290Ssam if ((flags & IEEE80211_F_DOFRATE) && 341148290Ssam ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 342138568Ssam flags &= ~IEEE80211_F_DOFRATE; 343116742Ssam error = 0; 344138568Ssam okrate = badrate = fixedrate = 0; 345165569Ssam srs = ieee80211_get_suprates(ic, ni->ni_chan); 346116742Ssam nrs = &ni->ni_rates; 347120482Ssam for (i = 0; i < nrs->rs_nrates; ) { 348116742Ssam ignore = 0; 349116742Ssam if (flags & IEEE80211_F_DOSORT) { 350116742Ssam /* 351116742Ssam * Sort rates. 352116742Ssam */ 353116742Ssam for (j = i + 1; j < nrs->rs_nrates; j++) { 354116742Ssam if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) { 355116742Ssam r = nrs->rs_rates[i]; 356116742Ssam nrs->rs_rates[i] = nrs->rs_rates[j]; 357116742Ssam nrs->rs_rates[j] = r; 358116742Ssam } 359116742Ssam } 360116742Ssam } 361116742Ssam r = nrs->rs_rates[i] & IEEE80211_RATE_VAL; 362116742Ssam badrate = r; 363116742Ssam if (flags & IEEE80211_F_DOFRATE) { 364116742Ssam /* 365138568Ssam * Check any fixed rate is included. 366116742Ssam */ 367138568Ssam if (r == RV(srs->rs_rates[ic->ic_fixed_rate])) 368138568Ssam fixedrate = r; 369116742Ssam } 370116742Ssam if (flags & IEEE80211_F_DONEGO) { 371116742Ssam /* 372116742Ssam * Check against supported rates. 373116742Ssam */ 374116742Ssam for (j = 0; j < srs->rs_nrates; j++) { 375127761Ssam if (r == RV(srs->rs_rates[j])) { 376127761Ssam /* 377127761Ssam * Overwrite with the supported rate 378127761Ssam * value so any basic rate bit is set. 379127761Ssam * This insures that response we send 380127761Ssam * to stations have the necessary basic 381127761Ssam * rate bit set. 382127761Ssam */ 383127761Ssam nrs->rs_rates[i] = srs->rs_rates[j]; 384116742Ssam break; 385127761Ssam } 386116742Ssam } 387116742Ssam if (j == srs->rs_nrates) { 388120482Ssam /* 389120482Ssam * A rate in the node's rate set is not 390120482Ssam * supported. If this is a basic rate and we 391120482Ssam * are operating as an AP then this is an error. 392120482Ssam * Otherwise we just discard/ignore the rate. 393120482Ssam * Note that this is important for 11b stations 394120482Ssam * when they want to associate with an 11g AP. 395120482Ssam */ 396120482Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP && 397120482Ssam (nrs->rs_rates[i] & IEEE80211_RATE_BASIC)) 398116742Ssam error++; 399116742Ssam ignore++; 400116742Ssam } 401116742Ssam } 402116742Ssam if (flags & IEEE80211_F_DODEL) { 403116742Ssam /* 404116742Ssam * Delete unacceptable rates. 405116742Ssam */ 406116742Ssam if (ignore) { 407116742Ssam nrs->rs_nrates--; 408116742Ssam for (j = i; j < nrs->rs_nrates; j++) 409116742Ssam nrs->rs_rates[j] = nrs->rs_rates[j + 1]; 410116742Ssam nrs->rs_rates[j] = 0; 411116742Ssam continue; 412116742Ssam } 413116742Ssam } 414116742Ssam if (!ignore) 415116742Ssam okrate = nrs->rs_rates[i]; 416116742Ssam i++; 417116742Ssam } 418138568Ssam if (okrate == 0 || error != 0 || 419138568Ssam ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0)) 420116742Ssam return badrate | IEEE80211_RATE_BASIC; 421116742Ssam else 422116742Ssam return RV(okrate); 423116742Ssam#undef RV 424116742Ssam} 425116742Ssam 426138568Ssam/* 427138568Ssam * Reset 11g-related state. 428138568Ssam */ 429138568Ssamvoid 430138568Ssamieee80211_reset_erp(struct ieee80211com *ic) 431138568Ssam{ 432138568Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 433138568Ssam ic->ic_nonerpsta = 0; 434138568Ssam ic->ic_longslotsta = 0; 435138568Ssam /* 436138568Ssam * Short slot time is enabled only when operating in 11g 437138568Ssam * and not in an IBSS. We must also honor whether or not 438138568Ssam * the driver is capable of doing it. 439138568Ssam */ 440138568Ssam ieee80211_set_shortslottime(ic, 441138568Ssam ic->ic_curmode == IEEE80211_MODE_11A || 442138568Ssam (ic->ic_curmode == IEEE80211_MODE_11G && 443138568Ssam ic->ic_opmode == IEEE80211_M_HOSTAP && 444138568Ssam (ic->ic_caps & IEEE80211_C_SHSLOT))); 445138568Ssam /* 446138568Ssam * Set short preamble and ERP barker-preamble flags. 447138568Ssam */ 448138568Ssam if (ic->ic_curmode == IEEE80211_MODE_11A || 449138568Ssam (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) { 450138568Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 451138568Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 452138568Ssam } else { 453138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 454138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 455138568Ssam } 456138568Ssam} 457138568Ssam 458138568Ssam/* 459138568Ssam * Set the short slot time state and notify the driver. 460138568Ssam */ 461138568Ssamvoid 462138568Ssamieee80211_set_shortslottime(struct ieee80211com *ic, int onoff) 463138568Ssam{ 464138568Ssam if (onoff) 465138568Ssam ic->ic_flags |= IEEE80211_F_SHSLOT; 466138568Ssam else 467138568Ssam ic->ic_flags &= ~IEEE80211_F_SHSLOT; 468138568Ssam /* notify driver */ 469138568Ssam if (ic->ic_updateslot != NULL) 470138568Ssam ic->ic_updateslot(ic->ic_ifp); 471138568Ssam} 472138568Ssam 473138568Ssam/* 474138568Ssam * Check if the specified rate set supports ERP. 475138568Ssam * NB: the rate set is assumed to be sorted. 476138568Ssam */ 477138568Ssamint 478138568Ssamieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs) 479138568Ssam{ 480138568Ssam#define N(a) (sizeof(a) / sizeof(a[0])) 481138568Ssam static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 }; 482138568Ssam int i, j; 483138568Ssam 484138568Ssam if (rs->rs_nrates < N(rates)) 485138568Ssam return 0; 486138568Ssam for (i = 0; i < N(rates); i++) { 487138568Ssam for (j = 0; j < rs->rs_nrates; j++) { 488138568Ssam int r = rs->rs_rates[j] & IEEE80211_RATE_VAL; 489138568Ssam if (rates[i] == r) 490138568Ssam goto next; 491138568Ssam if (r > rates[i]) 492138568Ssam return 0; 493138568Ssam } 494138568Ssam return 0; 495138568Ssam next: 496138568Ssam ; 497138568Ssam } 498138568Ssam return 1; 499138568Ssam#undef N 500138568Ssam} 501138568Ssam 502138568Ssam/* 503138568Ssam * Mark the basic rates for the 11g rate table based on the 504138568Ssam * operating mode. For real 11g we mark all the 11b rates 505138568Ssam * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 506138568Ssam * 11b rates. There's also a pseudo 11a-mode used to mark only 507138568Ssam * the basic OFDM rates. 508138568Ssam */ 509138568Ssamvoid 510138568Ssamieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode) 511138568Ssam{ 512138568Ssam static const struct ieee80211_rateset basic[] = { 513138568Ssam { 0 }, /* IEEE80211_MODE_AUTO */ 514138568Ssam { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */ 515138568Ssam { 2, { 2, 4 } }, /* IEEE80211_MODE_11B */ 516138568Ssam { 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G (mixed b/g) */ 517138568Ssam { 0 }, /* IEEE80211_MODE_FH */ 518138568Ssam /* IEEE80211_MODE_PUREG (not yet) */ 519138568Ssam { 7, { 2, 4, 11, 22, 12, 24, 48 } }, 520138568Ssam }; 521138568Ssam int i, j; 522138568Ssam 523138568Ssam for (i = 0; i < rs->rs_nrates; i++) { 524138568Ssam rs->rs_rates[i] &= IEEE80211_RATE_VAL; 525138568Ssam for (j = 0; j < basic[mode].rs_nrates; j++) 526138568Ssam if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 527138568Ssam rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 528138568Ssam break; 529138568Ssam } 530138568Ssam } 531138568Ssam} 532138568Ssam 533138568Ssam/* 534138568Ssam * WME protocol support. The following parameters come from the spec. 535138568Ssam */ 536138568Ssamtypedef struct phyParamType { 537138568Ssam u_int8_t aifsn; 538138568Ssam u_int8_t logcwmin; 539138568Ssam u_int8_t logcwmax; 540138568Ssam u_int16_t txopLimit; 541138568Ssam u_int8_t acm; 542138568Ssam} paramType; 543138568Ssam 544138568Ssamstatic const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = { 545138568Ssam { 3, 4, 6 }, /* IEEE80211_MODE_AUTO */ 546138568Ssam { 3, 4, 6 }, /* IEEE80211_MODE_11A */ 547138568Ssam { 3, 5, 7 }, /* IEEE80211_MODE_11B */ 548138568Ssam { 3, 4, 6 }, /* IEEE80211_MODE_11G */ 549138568Ssam { 3, 5, 7 }, /* IEEE80211_MODE_FH */ 550138568Ssam { 2, 3, 5 }, /* IEEE80211_MODE_TURBO_A */ 551138568Ssam { 2, 3, 5 }, /* IEEE80211_MODE_TURBO_G */ 552138568Ssam}; 553138568Ssamstatic const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = { 554138568Ssam { 7, 4, 10 }, /* IEEE80211_MODE_AUTO */ 555138568Ssam { 7, 4, 10 }, /* IEEE80211_MODE_11A */ 556138568Ssam { 7, 5, 10 }, /* IEEE80211_MODE_11B */ 557138568Ssam { 7, 4, 10 }, /* IEEE80211_MODE_11G */ 558138568Ssam { 7, 5, 10 }, /* IEEE80211_MODE_FH */ 559138568Ssam { 7, 3, 10 }, /* IEEE80211_MODE_TURBO_A */ 560138568Ssam { 7, 3, 10 }, /* IEEE80211_MODE_TURBO_G */ 561138568Ssam}; 562138568Ssamstatic const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = { 563138568Ssam { 1, 3, 4, 94 }, /* IEEE80211_MODE_AUTO */ 564138568Ssam { 1, 3, 4, 94 }, /* IEEE80211_MODE_11A */ 565138568Ssam { 1, 4, 5, 188 }, /* IEEE80211_MODE_11B */ 566138568Ssam { 1, 3, 4, 94 }, /* IEEE80211_MODE_11G */ 567138568Ssam { 1, 4, 5, 188 }, /* IEEE80211_MODE_FH */ 568138568Ssam { 1, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_A */ 569138568Ssam { 1, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_G */ 570138568Ssam}; 571138568Ssamstatic const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = { 572138568Ssam { 1, 2, 3, 47 }, /* IEEE80211_MODE_AUTO */ 573138568Ssam { 1, 2, 3, 47 }, /* IEEE80211_MODE_11A */ 574138568Ssam { 1, 3, 4, 102 }, /* IEEE80211_MODE_11B */ 575138568Ssam { 1, 2, 3, 47 }, /* IEEE80211_MODE_11G */ 576138568Ssam { 1, 3, 4, 102 }, /* IEEE80211_MODE_FH */ 577138568Ssam { 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_A */ 578138568Ssam { 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_G */ 579138568Ssam}; 580138568Ssam 581138568Ssamstatic const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = { 582138568Ssam { 3, 4, 10 }, /* IEEE80211_MODE_AUTO */ 583138568Ssam { 3, 4, 10 }, /* IEEE80211_MODE_11A */ 584138568Ssam { 3, 5, 10 }, /* IEEE80211_MODE_11B */ 585138568Ssam { 3, 4, 10 }, /* IEEE80211_MODE_11G */ 586138568Ssam { 3, 5, 10 }, /* IEEE80211_MODE_FH */ 587138568Ssam { 2, 3, 10 }, /* IEEE80211_MODE_TURBO_A */ 588138568Ssam { 2, 3, 10 }, /* IEEE80211_MODE_TURBO_G */ 589138568Ssam}; 590138568Ssamstatic const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = { 591138568Ssam { 2, 3, 4, 94 }, /* IEEE80211_MODE_AUTO */ 592138568Ssam { 2, 3, 4, 94 }, /* IEEE80211_MODE_11A */ 593138568Ssam { 2, 4, 5, 188 }, /* IEEE80211_MODE_11B */ 594138568Ssam { 2, 3, 4, 94 }, /* IEEE80211_MODE_11G */ 595138568Ssam { 2, 4, 5, 188 }, /* IEEE80211_MODE_FH */ 596138568Ssam { 2, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_A */ 597138568Ssam { 2, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_G */ 598138568Ssam}; 599138568Ssamstatic const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = { 600138568Ssam { 2, 2, 3, 47 }, /* IEEE80211_MODE_AUTO */ 601138568Ssam { 2, 2, 3, 47 }, /* IEEE80211_MODE_11A */ 602138568Ssam { 2, 3, 4, 102 }, /* IEEE80211_MODE_11B */ 603138568Ssam { 2, 2, 3, 47 }, /* IEEE80211_MODE_11G */ 604138568Ssam { 2, 3, 4, 102 }, /* IEEE80211_MODE_FH */ 605138568Ssam { 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_A */ 606138568Ssam { 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_G */ 607138568Ssam}; 608138568Ssam 609138568Ssamvoid 610138568Ssamieee80211_wme_initparams(struct ieee80211com *ic) 611138568Ssam{ 612138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 613138568Ssam const paramType *pPhyParam, *pBssPhyParam; 614138568Ssam struct wmeParams *wmep; 615138568Ssam int i; 616138568Ssam 617138568Ssam if ((ic->ic_caps & IEEE80211_C_WME) == 0) 618138568Ssam return; 619138568Ssam 620138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 621138568Ssam switch (i) { 622138568Ssam case WME_AC_BK: 623138568Ssam pPhyParam = &phyParamForAC_BK[ic->ic_curmode]; 624138568Ssam pBssPhyParam = &phyParamForAC_BK[ic->ic_curmode]; 625138568Ssam break; 626138568Ssam case WME_AC_VI: 627138568Ssam pPhyParam = &phyParamForAC_VI[ic->ic_curmode]; 628138568Ssam pBssPhyParam = &bssPhyParamForAC_VI[ic->ic_curmode]; 629138568Ssam break; 630138568Ssam case WME_AC_VO: 631138568Ssam pPhyParam = &phyParamForAC_VO[ic->ic_curmode]; 632138568Ssam pBssPhyParam = &bssPhyParamForAC_VO[ic->ic_curmode]; 633138568Ssam break; 634138568Ssam case WME_AC_BE: 635138568Ssam default: 636138568Ssam pPhyParam = &phyParamForAC_BE[ic->ic_curmode]; 637138568Ssam pBssPhyParam = &bssPhyParamForAC_BE[ic->ic_curmode]; 638138568Ssam break; 639138568Ssam } 640138568Ssam 641138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 642138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 643138568Ssam wmep->wmep_acm = pPhyParam->acm; 644138568Ssam wmep->wmep_aifsn = pPhyParam->aifsn; 645138568Ssam wmep->wmep_logcwmin = pPhyParam->logcwmin; 646138568Ssam wmep->wmep_logcwmax = pPhyParam->logcwmax; 647138568Ssam wmep->wmep_txopLimit = pPhyParam->txopLimit; 648138568Ssam } else { 649138568Ssam wmep->wmep_acm = pBssPhyParam->acm; 650138568Ssam wmep->wmep_aifsn = pBssPhyParam->aifsn; 651138568Ssam wmep->wmep_logcwmin = pBssPhyParam->logcwmin; 652138568Ssam wmep->wmep_logcwmax = pBssPhyParam->logcwmax; 653138568Ssam wmep->wmep_txopLimit = pBssPhyParam->txopLimit; 654138568Ssam 655138568Ssam } 656138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME, 657138568Ssam "%s: %s chan [acm %u aifsn %u log2(cwmin) %u " 658138568Ssam "log2(cwmax) %u txpoLimit %u]\n", __func__ 659138568Ssam , ieee80211_wme_acnames[i] 660138568Ssam , wmep->wmep_acm 661138568Ssam , wmep->wmep_aifsn 662138568Ssam , wmep->wmep_logcwmin 663138568Ssam , wmep->wmep_logcwmax 664138568Ssam , wmep->wmep_txopLimit 665138568Ssam ); 666138568Ssam 667138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 668138568Ssam wmep->wmep_acm = pBssPhyParam->acm; 669138568Ssam wmep->wmep_aifsn = pBssPhyParam->aifsn; 670138568Ssam wmep->wmep_logcwmin = pBssPhyParam->logcwmin; 671138568Ssam wmep->wmep_logcwmax = pBssPhyParam->logcwmax; 672138568Ssam wmep->wmep_txopLimit = pBssPhyParam->txopLimit; 673138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME, 674138568Ssam "%s: %s bss [acm %u aifsn %u log2(cwmin) %u " 675138568Ssam "log2(cwmax) %u txpoLimit %u]\n", __func__ 676138568Ssam , ieee80211_wme_acnames[i] 677138568Ssam , wmep->wmep_acm 678138568Ssam , wmep->wmep_aifsn 679138568Ssam , wmep->wmep_logcwmin 680138568Ssam , wmep->wmep_logcwmax 681138568Ssam , wmep->wmep_txopLimit 682138568Ssam ); 683138568Ssam } 684138568Ssam /* NB: check ic_bss to avoid NULL deref on initial attach */ 685138568Ssam if (ic->ic_bss != NULL) { 686138568Ssam /* 687138568Ssam * Calculate agressive mode switching threshold based 688138568Ssam * on beacon interval. This doesn't need locking since 689138568Ssam * we're only called before entering the RUN state at 690138568Ssam * which point we start sending beacon frames. 691138568Ssam */ 692138568Ssam wme->wme_hipri_switch_thresh = 693138568Ssam (HIGH_PRI_SWITCH_THRESH * ic->ic_bss->ni_intval) / 100; 694138568Ssam ieee80211_wme_updateparams(ic); 695138568Ssam } 696138568Ssam} 697138568Ssam 698138568Ssam/* 699138568Ssam * Update WME parameters for ourself and the BSS. 700138568Ssam */ 701138568Ssamvoid 702138568Ssamieee80211_wme_updateparams_locked(struct ieee80211com *ic) 703138568Ssam{ 704138568Ssam static const paramType phyParam[IEEE80211_MODE_MAX] = { 705138568Ssam { 2, 4, 10, 64 }, /* IEEE80211_MODE_AUTO */ 706138568Ssam { 2, 4, 10, 64 }, /* IEEE80211_MODE_11A */ 707138568Ssam { 2, 5, 10, 64 }, /* IEEE80211_MODE_11B */ 708138568Ssam { 2, 4, 10, 64 }, /* IEEE80211_MODE_11G */ 709138568Ssam { 2, 5, 10, 64 }, /* IEEE80211_MODE_FH */ 710138568Ssam { 1, 3, 10, 64 }, /* IEEE80211_MODE_TURBO_A */ 711138568Ssam { 1, 3, 10, 64 }, /* IEEE80211_MODE_TURBO_G */ 712138568Ssam }; 713138568Ssam struct ieee80211_wme_state *wme = &ic->ic_wme; 714138568Ssam const struct wmeParams *wmep; 715138568Ssam struct wmeParams *chanp, *bssp; 716138568Ssam int i; 717138568Ssam 718138568Ssam /* set up the channel access parameters for the physical device */ 719138568Ssam for (i = 0; i < WME_NUM_AC; i++) { 720138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[i]; 721138568Ssam wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; 722138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 723138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 724138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 725138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 726138568Ssam 727138568Ssam chanp = &wme->wme_bssChanParams.cap_wmeParams[i]; 728138568Ssam wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i]; 729138568Ssam chanp->wmep_aifsn = wmep->wmep_aifsn; 730138568Ssam chanp->wmep_logcwmin = wmep->wmep_logcwmin; 731138568Ssam chanp->wmep_logcwmax = wmep->wmep_logcwmax; 732138568Ssam chanp->wmep_txopLimit = wmep->wmep_txopLimit; 733138568Ssam } 734138568Ssam 735138568Ssam /* 736138568Ssam * This implements agressive mode as found in certain 737138568Ssam * vendors' AP's. When there is significant high 738138568Ssam * priority (VI/VO) traffic in the BSS throttle back BE 739138568Ssam * traffic by using conservative parameters. Otherwise 740138568Ssam * BE uses agressive params to optimize performance of 741138568Ssam * legacy/non-QoS traffic. 742138568Ssam */ 743138568Ssam if ((ic->ic_opmode == IEEE80211_M_HOSTAP && 744156524Ssam (wme->wme_flags & WME_F_AGGRMODE) != 0) || 745153974Ssam (ic->ic_opmode == IEEE80211_M_STA && 746138568Ssam (ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) || 747138568Ssam (ic->ic_flags & IEEE80211_F_WME) == 0) { 748138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 749138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 750138568Ssam 751138568Ssam chanp->wmep_aifsn = bssp->wmep_aifsn = 752138568Ssam phyParam[ic->ic_curmode].aifsn; 753138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 754138568Ssam phyParam[ic->ic_curmode].logcwmin; 755138568Ssam chanp->wmep_logcwmax = bssp->wmep_logcwmax = 756138568Ssam phyParam[ic->ic_curmode].logcwmax; 757138568Ssam chanp->wmep_txopLimit = bssp->wmep_txopLimit = 758153421Ssam (ic->ic_flags & IEEE80211_F_BURST) ? 759138568Ssam phyParam[ic->ic_curmode].txopLimit : 0; 760138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME, 761138568Ssam "%s: %s [acm %u aifsn %u log2(cwmin) %u " 762138568Ssam "log2(cwmax) %u txpoLimit %u]\n", __func__ 763138568Ssam , ieee80211_wme_acnames[WME_AC_BE] 764138568Ssam , chanp->wmep_acm 765138568Ssam , chanp->wmep_aifsn 766138568Ssam , chanp->wmep_logcwmin 767138568Ssam , chanp->wmep_logcwmax 768138568Ssam , chanp->wmep_txopLimit 769138568Ssam ); 770138568Ssam } 771138568Ssam 772138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP && 773156524Ssam ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) { 774138568Ssam static const u_int8_t logCwMin[IEEE80211_MODE_MAX] = { 775138568Ssam 3, /* IEEE80211_MODE_AUTO */ 776138568Ssam 3, /* IEEE80211_MODE_11A */ 777138568Ssam 4, /* IEEE80211_MODE_11B */ 778138568Ssam 3, /* IEEE80211_MODE_11G */ 779138568Ssam 4, /* IEEE80211_MODE_FH */ 780138568Ssam 3, /* IEEE80211_MODE_TURBO_A */ 781138568Ssam 3, /* IEEE80211_MODE_TURBO_G */ 782138568Ssam }; 783138568Ssam chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE]; 784138568Ssam bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE]; 785138568Ssam 786138568Ssam chanp->wmep_logcwmin = bssp->wmep_logcwmin = 787138568Ssam logCwMin[ic->ic_curmode]; 788138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME, 789138568Ssam "%s: %s log2(cwmin) %u\n", __func__ 790138568Ssam , ieee80211_wme_acnames[WME_AC_BE] 791138568Ssam , chanp->wmep_logcwmin 792138568Ssam ); 793138568Ssam } 794138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */ 795138568Ssam /* 796138568Ssam * Arrange for a beacon update and bump the parameter 797138568Ssam * set number so associated stations load the new values. 798138568Ssam */ 799138568Ssam wme->wme_bssChanParams.cap_info = 800138568Ssam (wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT; 801138568Ssam ic->ic_flags |= IEEE80211_F_WMEUPDATE; 802138568Ssam } 803138568Ssam 804138568Ssam wme->wme_update(ic); 805138568Ssam 806138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME, 807138568Ssam "%s: WME params updated, cap_info 0x%x\n", __func__, 808138568Ssam ic->ic_opmode == IEEE80211_M_STA ? 809138568Ssam wme->wme_wmeChanParams.cap_info : 810138568Ssam wme->wme_bssChanParams.cap_info); 811138568Ssam} 812138568Ssam 813138568Ssamvoid 814138568Ssamieee80211_wme_updateparams(struct ieee80211com *ic) 815138568Ssam{ 816138568Ssam 817138568Ssam if (ic->ic_caps & IEEE80211_C_WME) { 818138568Ssam IEEE80211_BEACON_LOCK(ic); 819138568Ssam ieee80211_wme_updateparams_locked(ic); 820138568Ssam IEEE80211_BEACON_UNLOCK(ic); 821138568Ssam } 822138568Ssam} 823138568Ssam 824153349Ssamvoid 825153349Ssamieee80211_beacon_miss(struct ieee80211com *ic) 826153349Ssam{ 827153349Ssam 828153349Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 829153349Ssam /* XXX check ic_curchan != ic_bsschan? */ 830153349Ssam return; 831153349Ssam } 832153349Ssam IEEE80211_DPRINTF(ic, 833153349Ssam IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 834153349Ssam "%s\n", "beacon miss"); 835153349Ssam 836153349Ssam /* 837153349Ssam * Our handling is only meaningful for stations that are 838153349Ssam * associated; any other conditions else will be handled 839153349Ssam * through different means (e.g. the tx timeout on mgt frames). 840153349Ssam */ 841153349Ssam if (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN) 842153349Ssam return; 843153349Ssam 844153349Ssam if (++ic->ic_bmiss_count < ic->ic_bmiss_max) { 845153349Ssam /* 846153349Ssam * Send a directed probe req before falling back to a scan; 847153349Ssam * if we receive a response ic_bmiss_count will be reset. 848153349Ssam * Some cards mistakenly report beacon miss so this avoids 849153349Ssam * the expensive scan if the ap is still there. 850153349Ssam */ 851153349Ssam ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr, 852153349Ssam ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid, 853153349Ssam ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen, 854153349Ssam ic->ic_opt_ie, ic->ic_opt_ie_len); 855153349Ssam return; 856153349Ssam } 857153349Ssam ic->ic_bmiss_count = 0; 858153349Ssam ieee80211_new_state(ic, IEEE80211_S_SCAN, 0); 859153349Ssam} 860153349Ssam 861154736Ssam/* 862154736Ssam * Software beacon miss handling. Check if any beacons 863154736Ssam * were received in the last period. If not post a 864154736Ssam * beacon miss; otherwise reset the counter. 865154736Ssam */ 866147765Ssamstatic void 867154736Ssamieee80211_swbmiss(void *arg) 868154736Ssam{ 869154736Ssam struct ieee80211com *ic = arg; 870154736Ssam 871154736Ssam if (ic->ic_swbmiss_count == 0) { 872154736Ssam ieee80211_beacon_miss(ic); 873154736Ssam if (ic->ic_bmiss_count == 0) /* don't re-arm timer */ 874154736Ssam return; 875154736Ssam } else 876154736Ssam ic->ic_swbmiss_count = 0; 877154736Ssam callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period, 878154736Ssam ieee80211_swbmiss, ic); 879154736Ssam} 880154736Ssam 881154736Ssamstatic void 882147765Ssamsta_disassoc(void *arg, struct ieee80211_node *ni) 883147765Ssam{ 884147765Ssam struct ieee80211com *ic = arg; 885147765Ssam 886147765Ssam if (ni->ni_associd != 0) { 887147765Ssam IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC, 888147765Ssam IEEE80211_REASON_ASSOC_LEAVE); 889147765Ssam ieee80211_node_leave(ic, ni); 890147765Ssam } 891147765Ssam} 892147765Ssam 893147765Ssamstatic void 894147765Ssamsta_deauth(void *arg, struct ieee80211_node *ni) 895147765Ssam{ 896147765Ssam struct ieee80211com *ic = arg; 897147765Ssam 898147765Ssam IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH, 899147765Ssam IEEE80211_REASON_ASSOC_LEAVE); 900147765Ssam} 901147765Ssam 902117811Ssamstatic int 903138568Ssamieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 904116742Ssam{ 905138568Ssam struct ifnet *ifp = ic->ic_ifp; 906116742Ssam struct ieee80211_node *ni; 907117811Ssam enum ieee80211_state ostate; 908116742Ssam 909116742Ssam ostate = ic->ic_state; 910138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__, 911138568Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 912117811Ssam ic->ic_state = nstate; /* state transition */ 913116742Ssam ni = ic->ic_bss; /* NB: no reference held */ 914154736Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS) 915154736Ssam callout_stop(&ic->ic_swbmiss); 916116742Ssam switch (nstate) { 917116742Ssam case IEEE80211_S_INIT: 918116742Ssam switch (ostate) { 919116742Ssam case IEEE80211_S_INIT: 920116742Ssam break; 921116742Ssam case IEEE80211_S_RUN: 922116742Ssam switch (ic->ic_opmode) { 923116742Ssam case IEEE80211_M_STA: 924116742Ssam IEEE80211_SEND_MGMT(ic, ni, 925116742Ssam IEEE80211_FC0_SUBTYPE_DISASSOC, 926116742Ssam IEEE80211_REASON_ASSOC_LEAVE); 927138568Ssam ieee80211_sta_leave(ic, ni); 928116742Ssam break; 929116742Ssam case IEEE80211_M_HOSTAP: 930147765Ssam ieee80211_iterate_nodes(&ic->ic_sta, 931147765Ssam sta_disassoc, ic); 932116742Ssam break; 933116742Ssam default: 934116742Ssam break; 935116742Ssam } 936138568Ssam goto reset; 937116742Ssam case IEEE80211_S_ASSOC: 938116742Ssam switch (ic->ic_opmode) { 939116742Ssam case IEEE80211_M_STA: 940116742Ssam IEEE80211_SEND_MGMT(ic, ni, 941116742Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 942116742Ssam IEEE80211_REASON_AUTH_LEAVE); 943116742Ssam break; 944116742Ssam case IEEE80211_M_HOSTAP: 945147765Ssam ieee80211_iterate_nodes(&ic->ic_sta, 946147765Ssam sta_deauth, ic); 947116742Ssam break; 948116742Ssam default: 949116742Ssam break; 950116742Ssam } 951138568Ssam goto reset; 952140441Ssam case IEEE80211_S_SCAN: 953140441Ssam ieee80211_cancel_scan(ic); 954140441Ssam goto reset; 955116742Ssam case IEEE80211_S_AUTH: 956138568Ssam reset: 957116742Ssam ic->ic_mgt_timer = 0; 958116742Ssam IF_DRAIN(&ic->ic_mgtq); 959138568Ssam ieee80211_reset_bss(ic); 960116742Ssam break; 961116742Ssam } 962138568Ssam if (ic->ic_auth->ia_detach != NULL) 963138568Ssam ic->ic_auth->ia_detach(ic); 964116742Ssam break; 965116742Ssam case IEEE80211_S_SCAN: 966116742Ssam switch (ostate) { 967116742Ssam case IEEE80211_S_INIT: 968138568Ssam if ((ic->ic_opmode == IEEE80211_M_HOSTAP || 969138568Ssam ic->ic_opmode == IEEE80211_M_IBSS || 970138568Ssam ic->ic_opmode == IEEE80211_M_AHDEMO) && 971116742Ssam ic->ic_des_chan != IEEE80211_CHAN_ANYC) { 972116742Ssam /* 973116742Ssam * AP operation and we already have a channel; 974116742Ssam * bypass the scan and startup immediately. 975116742Ssam */ 976116742Ssam ieee80211_create_ibss(ic, ic->ic_des_chan); 977116742Ssam } else { 978138568Ssam ieee80211_begin_scan(ic, arg); 979116742Ssam } 980116742Ssam break; 981116742Ssam case IEEE80211_S_SCAN: 982138568Ssam /* 983156358Ssam * Scan next. If doing an active scan probe 984156358Ssam * for the requested ap (if any). 985138568Ssam */ 986156358Ssam if (ic->ic_flags & IEEE80211_F_ASCAN) 987156358Ssam ieee80211_probe_curchan(ic, 0); 988116742Ssam break; 989116742Ssam case IEEE80211_S_RUN: 990116742Ssam /* beacon miss */ 991138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, 992138568Ssam "no recent beacons from %s; rescanning\n", 993138568Ssam ether_sprintf(ic->ic_bss->ni_bssid)); 994138568Ssam ieee80211_sta_leave(ic, ni); 995138568Ssam ic->ic_flags &= ~IEEE80211_F_SIBSS; /* XXX */ 996116742Ssam /* FALLTHRU */ 997116742Ssam case IEEE80211_S_AUTH: 998116742Ssam case IEEE80211_S_ASSOC: 999116742Ssam /* timeout restart scan */ 1000138568Ssam ni = ieee80211_find_node(&ic->ic_scan, 1001138568Ssam ic->ic_bss->ni_macaddr); 1002116742Ssam if (ni != NULL) { 1003116742Ssam ni->ni_fails++; 1004116742Ssam ieee80211_unref_node(&ni); 1005116742Ssam } 1006147116Ssam if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) 1007147116Ssam ieee80211_begin_scan(ic, arg); 1008116742Ssam break; 1009116742Ssam } 1010116742Ssam break; 1011116742Ssam case IEEE80211_S_AUTH: 1012116742Ssam switch (ostate) { 1013116742Ssam case IEEE80211_S_INIT: 1014116742Ssam case IEEE80211_S_SCAN: 1015116742Ssam IEEE80211_SEND_MGMT(ic, ni, 1016116742Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 1017116742Ssam break; 1018116742Ssam case IEEE80211_S_AUTH: 1019116742Ssam case IEEE80211_S_ASSOC: 1020138568Ssam switch (arg) { 1021116742Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 1022116742Ssam /* ??? */ 1023116742Ssam IEEE80211_SEND_MGMT(ic, ni, 1024116742Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 1025116742Ssam break; 1026116742Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 1027116742Ssam /* ignore and retry scan on timeout */ 1028116742Ssam break; 1029116742Ssam } 1030116742Ssam break; 1031116742Ssam case IEEE80211_S_RUN: 1032138568Ssam switch (arg) { 1033116742Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 1034116742Ssam IEEE80211_SEND_MGMT(ic, ni, 1035116742Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 1036116742Ssam ic->ic_state = ostate; /* stay RUN */ 1037116742Ssam break; 1038116742Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 1039138568Ssam ieee80211_sta_leave(ic, ni); 1040147116Ssam if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) { 1041147116Ssam /* try to reauth */ 1042147116Ssam IEEE80211_SEND_MGMT(ic, ni, 1043147116Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 1044147116Ssam } 1045116742Ssam break; 1046116742Ssam } 1047116742Ssam break; 1048116742Ssam } 1049116742Ssam break; 1050116742Ssam case IEEE80211_S_ASSOC: 1051116742Ssam switch (ostate) { 1052116742Ssam case IEEE80211_S_INIT: 1053116742Ssam case IEEE80211_S_SCAN: 1054116742Ssam case IEEE80211_S_ASSOC: 1055138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 1056138568Ssam "%s: invalid transition\n", __func__); 1057116742Ssam break; 1058116742Ssam case IEEE80211_S_AUTH: 1059116742Ssam IEEE80211_SEND_MGMT(ic, ni, 1060116742Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 1061116742Ssam break; 1062116742Ssam case IEEE80211_S_RUN: 1063138568Ssam ieee80211_sta_leave(ic, ni); 1064147116Ssam if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) { 1065147116Ssam IEEE80211_SEND_MGMT(ic, ni, 1066147116Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1); 1067147116Ssam } 1068116742Ssam break; 1069116742Ssam } 1070116742Ssam break; 1071116742Ssam case IEEE80211_S_RUN: 1072138568Ssam if (ic->ic_flags & IEEE80211_F_WPA) { 1073138568Ssam /* XXX validate prerequisites */ 1074138568Ssam } 1075116742Ssam switch (ostate) { 1076116742Ssam case IEEE80211_S_INIT: 1077138568Ssam if (ic->ic_opmode == IEEE80211_M_MONITOR) 1078138568Ssam break; 1079138568Ssam /* fall thru... */ 1080116742Ssam case IEEE80211_S_AUTH: 1081138568Ssam IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 1082138568Ssam "%s: invalid transition\n", __func__); 1083140763Ssam /* fall thru... */ 1084140763Ssam case IEEE80211_S_RUN: 1085116742Ssam break; 1086116742Ssam case IEEE80211_S_SCAN: /* adhoc/hostap mode */ 1087116742Ssam case IEEE80211_S_ASSOC: /* infra mode */ 1088116742Ssam KASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates, 1089116742Ssam ("%s: bogus xmit rate %u setup\n", __func__, 1090116742Ssam ni->ni_txrate)); 1091138568Ssam#ifdef IEEE80211_DEBUG 1092138568Ssam if (ieee80211_msg_debug(ic)) { 1093116742Ssam if (ic->ic_opmode == IEEE80211_M_STA) 1094138568Ssam if_printf(ifp, "associated "); 1095116742Ssam else 1096138568Ssam if_printf(ifp, "synchronized "); 1097116742Ssam printf("with %s ssid ", 1098116742Ssam ether_sprintf(ni->ni_bssid)); 1099116742Ssam ieee80211_print_essid(ic->ic_bss->ni_essid, 1100116742Ssam ni->ni_esslen); 1101116742Ssam printf(" channel %d start %uMb\n", 1102148936Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 1103116742Ssam IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate])); 1104116742Ssam } 1105138568Ssam#endif 1106116742Ssam ic->ic_mgt_timer = 0; 1107138568Ssam if (ic->ic_opmode == IEEE80211_M_STA) 1108138568Ssam ieee80211_notify_node_join(ic, ni, 1109138568Ssam arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 1110138568Ssam if_start(ifp); /* XXX not authorized yet */ 1111116742Ssam break; 1112116742Ssam } 1113154736Ssam if (ostate != IEEE80211_S_RUN && 1114154736Ssam ic->ic_opmode == IEEE80211_M_STA && 1115154736Ssam (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)) { 1116154736Ssam /* 1117154736Ssam * Start s/w beacon miss timer for devices w/o 1118154736Ssam * hardware support. We fudge a bit here since 1119154736Ssam * we're doing this in software. 1120154736Ssam */ 1121154736Ssam ic->ic_swbmiss_period = IEEE80211_TU_TO_TICKS( 1122154736Ssam 2 * ic->ic_bmissthreshold * ni->ni_intval); 1123154736Ssam ic->ic_swbmiss_count = 0; 1124154736Ssam callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period, 1125154736Ssam ieee80211_swbmiss, ic); 1126154736Ssam } 1127138568Ssam /* 1128138568Ssam * Start/stop the authenticator when operating as an 1129138568Ssam * AP. We delay until here to allow configuration to 1130138568Ssam * happen out of order. 1131138568Ssam */ 1132138568Ssam if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */ 1133138568Ssam ic->ic_auth->ia_attach != NULL) { 1134138568Ssam /* XXX check failure */ 1135138568Ssam ic->ic_auth->ia_attach(ic); 1136138568Ssam } else if (ic->ic_auth->ia_detach != NULL) { 1137138568Ssam ic->ic_auth->ia_detach(ic); 1138138568Ssam } 1139138568Ssam /* 1140138568Ssam * When 802.1x is not in use mark the port authorized 1141138568Ssam * at this point so traffic can flow. 1142138568Ssam */ 1143138568Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 1144148302Ssam ieee80211_node_authorize(ni); 1145138568Ssam /* 1146138568Ssam * Enable inactivity processing. 1147138568Ssam * XXX 1148138568Ssam */ 1149138568Ssam ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT; 1150140753Ssam ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT; 1151116742Ssam break; 1152116742Ssam } 1153116742Ssam return 0; 1154116742Ssam} 1155