ieee80211_sta.c revision 205277
1178354Ssam/*- 2178354Ssam * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting 3178354Ssam * All rights reserved. 4178354Ssam * 5178354Ssam * Redistribution and use in source and binary forms, with or without 6178354Ssam * modification, are permitted provided that the following conditions 7178354Ssam * are met: 8178354Ssam * 1. Redistributions of source code must retain the above copyright 9178354Ssam * notice, this list of conditions and the following disclaimer. 10178354Ssam * 2. Redistributions in binary form must reproduce the above copyright 11178354Ssam * notice, this list of conditions and the following disclaimer in the 12178354Ssam * documentation and/or other materials provided with the distribution. 13178354Ssam * 14178354Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15178354Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16178354Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17178354Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18178354Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19178354Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20178354Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21178354Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22178354Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23178354Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24178354Ssam */ 25178354Ssam 26178354Ssam#include <sys/cdefs.h> 27178354Ssam#ifdef __FreeBSD__ 28178354Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_sta.c 205277 2010-03-18 11:06:38Z rpaulo $"); 29178354Ssam#endif 30178354Ssam 31178354Ssam/* 32178354Ssam * IEEE 802.11 Station mode support. 33178354Ssam */ 34178354Ssam#include "opt_inet.h" 35178354Ssam#include "opt_wlan.h" 36178354Ssam 37178354Ssam#include <sys/param.h> 38178354Ssam#include <sys/systm.h> 39178354Ssam#include <sys/mbuf.h> 40178354Ssam#include <sys/malloc.h> 41178354Ssam#include <sys/kernel.h> 42178354Ssam 43178354Ssam#include <sys/socket.h> 44178354Ssam#include <sys/sockio.h> 45178354Ssam#include <sys/endian.h> 46178354Ssam#include <sys/errno.h> 47178354Ssam#include <sys/proc.h> 48178354Ssam#include <sys/sysctl.h> 49178354Ssam 50178354Ssam#include <net/if.h> 51178354Ssam#include <net/if_media.h> 52178354Ssam#include <net/if_llc.h> 53178354Ssam#include <net/ethernet.h> 54178354Ssam 55178354Ssam#include <net/bpf.h> 56178354Ssam 57178354Ssam#include <net80211/ieee80211_var.h> 58178354Ssam#include <net80211/ieee80211_sta.h> 59178354Ssam#include <net80211/ieee80211_input.h> 60190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 61190391Ssam#include <net80211/ieee80211_superg.h> 62190391Ssam#endif 63178354Ssam 64178354Ssam#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 65178354Ssam 66178354Ssamstatic void sta_vattach(struct ieee80211vap *); 67178354Ssamstatic void sta_beacon_miss(struct ieee80211vap *); 68178354Ssamstatic int sta_newstate(struct ieee80211vap *, enum ieee80211_state, int); 69192468Ssamstatic int sta_input(struct ieee80211_node *, struct mbuf *, int, int); 70178354Ssamstatic void sta_recv_mgmt(struct ieee80211_node *, struct mbuf *, 71192468Ssam int subtype, int rssi, int nf); 72191546Ssamstatic void sta_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); 73178354Ssam 74178354Ssamvoid 75178354Ssamieee80211_sta_attach(struct ieee80211com *ic) 76178354Ssam{ 77178354Ssam ic->ic_vattach[IEEE80211_M_STA] = sta_vattach; 78178354Ssam} 79178354Ssam 80178354Ssamvoid 81178354Ssamieee80211_sta_detach(struct ieee80211com *ic) 82178354Ssam{ 83178354Ssam} 84178354Ssam 85178354Ssamstatic void 86178354Ssamsta_vdetach(struct ieee80211vap *vap) 87178354Ssam{ 88178354Ssam} 89178354Ssam 90178354Ssamstatic void 91178354Ssamsta_vattach(struct ieee80211vap *vap) 92178354Ssam{ 93178354Ssam vap->iv_newstate = sta_newstate; 94178354Ssam vap->iv_input = sta_input; 95178354Ssam vap->iv_recv_mgmt = sta_recv_mgmt; 96191546Ssam vap->iv_recv_ctl = sta_recv_ctl; 97178354Ssam vap->iv_opdetach = sta_vdetach; 98178354Ssam vap->iv_bmiss = sta_beacon_miss; 99178354Ssam} 100178354Ssam 101178354Ssam/* 102178354Ssam * Handle a beacon miss event. The common code filters out 103178354Ssam * spurious events that can happen when scanning and/or before 104178354Ssam * reaching RUN state. 105178354Ssam */ 106178354Ssamstatic void 107178354Ssamsta_beacon_miss(struct ieee80211vap *vap) 108178354Ssam{ 109193439Ssam struct ieee80211com *ic = vap->iv_ic; 110178354Ssam 111193439Ssam KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning")); 112193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 113193439Ssam ("wrong state %s", ieee80211_state_name[vap->iv_state])); 114178354Ssam 115193439Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 116193439Ssam "beacon miss, mode %s state %s\n", 117193439Ssam ieee80211_opmode_name[vap->iv_opmode], 118193439Ssam ieee80211_state_name[vap->iv_state]); 119193439Ssam 120193439Ssam if (vap->iv_state == IEEE80211_S_CSA) { 121193439Ssam /* 122193439Ssam * A Channel Switch is pending; assume we missed the 123193439Ssam * beacon that would've completed the process and just 124193439Ssam * force the switch. If we made a mistake we'll not 125193439Ssam * find the AP on the new channel and fall back to a 126193439Ssam * normal scan. 127193439Ssam */ 128193439Ssam ieee80211_csa_completeswitch(ic); 129193439Ssam return; 130193439Ssam } 131178354Ssam if (++vap->iv_bmiss_count < vap->iv_bmiss_max) { 132178354Ssam /* 133178354Ssam * Send a directed probe req before falling back to a 134178354Ssam * scan; if we receive a response ic_bmiss_count will 135178354Ssam * be reset. Some cards mistakenly report beacon miss 136178354Ssam * so this avoids the expensive scan if the ap is 137178354Ssam * still there. 138178354Ssam */ 139178354Ssam ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr, 140178354Ssam vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid, 141178354Ssam vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); 142178354Ssam return; 143178354Ssam } 144205140Sweongyo 145205140Sweongyo callout_stop(&vap->iv_swbmiss); 146178354Ssam vap->iv_bmiss_count = 0; 147178354Ssam vap->iv_stats.is_beacon_miss++; 148178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 149190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 150190402Ssam struct ieee80211com *ic = vap->iv_ic; 151190402Ssam 152178354Ssam /* 153178354Ssam * If we receive a beacon miss interrupt when using 154178354Ssam * dynamic turbo, attempt to switch modes before 155178354Ssam * reassociating. 156178354Ssam */ 157178354Ssam if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP)) 158178354Ssam ieee80211_dturbo_switch(vap, 159178354Ssam ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO); 160190391Ssam#endif 161178354Ssam /* 162178354Ssam * Try to reassociate before scanning for a new ap. 163178354Ssam */ 164178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 165178354Ssam } else { 166178354Ssam /* 167178354Ssam * Somebody else is controlling state changes (e.g. 168178354Ssam * a user-mode app) don't do anything that would 169178354Ssam * confuse them; just drop into scan mode so they'll 170178354Ssam * notified of the state change and given control. 171178354Ssam */ 172178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); 173178354Ssam } 174178354Ssam} 175178354Ssam 176178354Ssam/* 177178354Ssam * Handle deauth with reason. We retry only for 178178354Ssam * the cases where we might succeed. Otherwise 179178354Ssam * we downgrade the ap and scan. 180178354Ssam */ 181178354Ssamstatic void 182178354Ssamsta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason) 183178354Ssam{ 184178354Ssam switch (reason) { 185178354Ssam case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */ 186178354Ssam case IEEE80211_STATUS_TIMEOUT: 187178354Ssam case IEEE80211_REASON_ASSOC_EXPIRE: 188178354Ssam case IEEE80211_REASON_NOT_AUTHED: 189178354Ssam case IEEE80211_REASON_NOT_ASSOCED: 190178354Ssam case IEEE80211_REASON_ASSOC_LEAVE: 191178354Ssam case IEEE80211_REASON_ASSOC_NOT_AUTHED: 192178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); 193178354Ssam break; 194178354Ssam default: 195178354Ssam ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason); 196178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 197178354Ssam ieee80211_check_scan_current(vap); 198178354Ssam break; 199178354Ssam } 200178354Ssam} 201178354Ssam 202178354Ssam/* 203178354Ssam * IEEE80211_M_STA vap state machine handler. 204178354Ssam * This routine handles the main states in the 802.11 protocol. 205178354Ssam */ 206178354Ssamstatic int 207178354Ssamsta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 208178354Ssam{ 209178354Ssam struct ieee80211com *ic = vap->iv_ic; 210178354Ssam struct ieee80211_node *ni; 211178354Ssam enum ieee80211_state ostate; 212178354Ssam 213178354Ssam IEEE80211_LOCK_ASSERT(ic); 214178354Ssam 215178354Ssam ostate = vap->iv_state; 216178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 217178354Ssam __func__, ieee80211_state_name[ostate], 218178354Ssam ieee80211_state_name[nstate], arg); 219178354Ssam vap->iv_state = nstate; /* state transition */ 220178354Ssam callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */ 221178354Ssam if (ostate != IEEE80211_S_SCAN) 222178354Ssam ieee80211_cancel_scan(vap); /* background scan */ 223178354Ssam ni = vap->iv_bss; /* NB: no reference held */ 224178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) 225178354Ssam callout_stop(&vap->iv_swbmiss); 226178354Ssam switch (nstate) { 227178354Ssam case IEEE80211_S_INIT: 228178354Ssam switch (ostate) { 229178354Ssam case IEEE80211_S_SLEEP: 230178354Ssam /* XXX wakeup */ 231178354Ssam case IEEE80211_S_RUN: 232178354Ssam IEEE80211_SEND_MGMT(ni, 233178354Ssam IEEE80211_FC0_SUBTYPE_DISASSOC, 234178354Ssam IEEE80211_REASON_ASSOC_LEAVE); 235178354Ssam ieee80211_sta_leave(ni); 236178354Ssam break; 237178354Ssam case IEEE80211_S_ASSOC: 238178354Ssam IEEE80211_SEND_MGMT(ni, 239178354Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 240178354Ssam IEEE80211_REASON_AUTH_LEAVE); 241178354Ssam break; 242178354Ssam case IEEE80211_S_SCAN: 243178354Ssam ieee80211_cancel_scan(vap); 244178354Ssam break; 245178354Ssam default: 246178354Ssam goto invalid; 247178354Ssam } 248178354Ssam if (ostate != IEEE80211_S_INIT) { 249178354Ssam /* NB: optimize INIT -> INIT case */ 250178354Ssam ieee80211_reset_bss(vap); 251178354Ssam } 252178354Ssam if (vap->iv_auth->ia_detach != NULL) 253178354Ssam vap->iv_auth->ia_detach(vap); 254178354Ssam break; 255178354Ssam case IEEE80211_S_SCAN: 256178354Ssam switch (ostate) { 257178354Ssam case IEEE80211_S_INIT: 258178354Ssam /* 259178354Ssam * Initiate a scan. We can come here as a result 260178354Ssam * of an IEEE80211_IOC_SCAN_REQ too in which case 261178354Ssam * the vap will be marked with IEEE80211_FEXT_SCANREQ 262178354Ssam * and the scan request parameters will be present 263178354Ssam * in iv_scanreq. Otherwise we do the default. 264178354Ssam */ 265178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 266178354Ssam ieee80211_check_scan(vap, 267178354Ssam vap->iv_scanreq_flags, 268178354Ssam vap->iv_scanreq_duration, 269178354Ssam vap->iv_scanreq_mindwell, 270178354Ssam vap->iv_scanreq_maxdwell, 271178354Ssam vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 272178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 273178354Ssam } else 274178354Ssam ieee80211_check_scan_current(vap); 275178354Ssam break; 276178354Ssam case IEEE80211_S_SCAN: 277178354Ssam case IEEE80211_S_AUTH: 278178354Ssam case IEEE80211_S_ASSOC: 279178354Ssam /* 280178354Ssam * These can happen either because of a timeout 281178354Ssam * on an assoc/auth response or because of a 282178354Ssam * change in state that requires a reset. For 283178354Ssam * the former we're called with a non-zero arg 284178354Ssam * that is the cause for the failure; pass this 285178354Ssam * to the scan code so it can update state. 286178354Ssam * Otherwise trigger a new scan unless we're in 287178354Ssam * manual roaming mode in which case an application 288178354Ssam * must issue an explicit scan request. 289178354Ssam */ 290178354Ssam if (arg != 0) 291178354Ssam ieee80211_scan_assoc_fail(vap, 292178354Ssam vap->iv_bss->ni_macaddr, arg); 293178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 294178354Ssam ieee80211_check_scan_current(vap); 295178354Ssam break; 296178354Ssam case IEEE80211_S_RUN: /* beacon miss */ 297178354Ssam /* 298178354Ssam * Beacon miss. Notify user space and if not 299178354Ssam * under control of a user application (roaming 300178354Ssam * manual) kick off a scan to re-connect. 301178354Ssam */ 302178354Ssam ieee80211_sta_leave(ni); 303178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 304178354Ssam ieee80211_check_scan_current(vap); 305178354Ssam break; 306178354Ssam default: 307178354Ssam goto invalid; 308178354Ssam } 309178354Ssam break; 310178354Ssam case IEEE80211_S_AUTH: 311178354Ssam switch (ostate) { 312178354Ssam case IEEE80211_S_INIT: 313178354Ssam case IEEE80211_S_SCAN: 314178354Ssam IEEE80211_SEND_MGMT(ni, 315178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 316178354Ssam break; 317178354Ssam case IEEE80211_S_AUTH: 318178354Ssam case IEEE80211_S_ASSOC: 319178354Ssam switch (arg & 0xff) { 320178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 321178354Ssam /* ??? */ 322178354Ssam IEEE80211_SEND_MGMT(ni, 323178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 324178354Ssam break; 325178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 326178354Ssam sta_authretry(vap, ni, arg>>8); 327178354Ssam break; 328178354Ssam } 329178354Ssam break; 330178354Ssam case IEEE80211_S_RUN: 331178354Ssam switch (arg & 0xff) { 332178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 333178354Ssam IEEE80211_SEND_MGMT(ni, 334178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 335178354Ssam vap->iv_state = ostate; /* stay RUN */ 336178354Ssam break; 337178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 338178354Ssam ieee80211_sta_leave(ni); 339178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 340178354Ssam /* try to reauth */ 341178354Ssam IEEE80211_SEND_MGMT(ni, 342178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 343178354Ssam } 344178354Ssam break; 345178354Ssam } 346178354Ssam break; 347178354Ssam default: 348178354Ssam goto invalid; 349178354Ssam } 350178354Ssam break; 351178354Ssam case IEEE80211_S_ASSOC: 352178354Ssam switch (ostate) { 353178354Ssam case IEEE80211_S_AUTH: 354178354Ssam case IEEE80211_S_ASSOC: 355178354Ssam IEEE80211_SEND_MGMT(ni, 356178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 357178354Ssam break; 358178354Ssam case IEEE80211_S_SLEEP: /* cannot happen */ 359178354Ssam case IEEE80211_S_RUN: 360178354Ssam ieee80211_sta_leave(ni); 361178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 362178354Ssam IEEE80211_SEND_MGMT(ni, arg ? 363178354Ssam IEEE80211_FC0_SUBTYPE_REASSOC_REQ : 364178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 365178354Ssam } 366178354Ssam break; 367178354Ssam default: 368178354Ssam goto invalid; 369178354Ssam } 370178354Ssam break; 371178354Ssam case IEEE80211_S_RUN: 372178354Ssam if (vap->iv_flags & IEEE80211_F_WPA) { 373178354Ssam /* XXX validate prerequisites */ 374178354Ssam } 375178354Ssam switch (ostate) { 376178354Ssam case IEEE80211_S_RUN: 377193439Ssam case IEEE80211_S_CSA: 378178354Ssam break; 379178354Ssam case IEEE80211_S_AUTH: /* when join is done in fw */ 380178354Ssam case IEEE80211_S_ASSOC: 381178354Ssam#ifdef IEEE80211_DEBUG 382178354Ssam if (ieee80211_msg_debug(vap)) { 383178354Ssam ieee80211_note(vap, "%s with %s ssid ", 384178354Ssam (vap->iv_opmode == IEEE80211_M_STA ? 385178354Ssam "associated" : "synchronized"), 386178354Ssam ether_sprintf(ni->ni_bssid)); 387178354Ssam ieee80211_print_essid(vap->iv_bss->ni_essid, 388178354Ssam ni->ni_esslen); 389178354Ssam /* XXX MCS/HT */ 390178354Ssam printf(" channel %d start %uMb\n", 391178354Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 392178354Ssam IEEE80211_RATE2MBS(ni->ni_txrate)); 393178354Ssam } 394178354Ssam#endif 395178354Ssam ieee80211_scan_assoc_success(vap, ni->ni_macaddr); 396178354Ssam ieee80211_notify_node_join(ni, 397178354Ssam arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 398178354Ssam break; 399178354Ssam case IEEE80211_S_SLEEP: 400178354Ssam ieee80211_sta_pwrsave(vap, 0); 401178354Ssam break; 402178354Ssam default: 403178354Ssam goto invalid; 404178354Ssam } 405178354Ssam ieee80211_sync_curchan(ic); 406178354Ssam if (ostate != IEEE80211_S_RUN && 407178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) { 408178354Ssam /* 409178354Ssam * Start s/w beacon miss timer for devices w/o 410178354Ssam * hardware support. We fudge a bit here since 411178354Ssam * we're doing this in software. 412178354Ssam */ 413178354Ssam vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS( 414178354Ssam 2 * vap->iv_bmissthreshold * ni->ni_intval); 415178354Ssam vap->iv_swbmiss_count = 0; 416178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 417178354Ssam ieee80211_swbmiss, vap); 418178354Ssam } 419178354Ssam /* 420178354Ssam * When 802.1x is not in use mark the port authorized 421178354Ssam * at this point so traffic can flow. 422178354Ssam */ 423178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 424178354Ssam ieee80211_node_authorize(ni); 425184345Ssam /* 426184345Ssam * Fake association when joining an existing bss. 427184345Ssam */ 428184345Ssam if (ic->ic_newassoc != NULL) 429184345Ssam ic->ic_newassoc(vap->iv_bss, ostate != IEEE80211_S_RUN); 430178354Ssam break; 431193439Ssam case IEEE80211_S_CSA: 432193439Ssam if (ostate != IEEE80211_S_RUN) 433193439Ssam goto invalid; 434193439Ssam break; 435178354Ssam case IEEE80211_S_SLEEP: 436196783Ssam ieee80211_sta_pwrsave(vap, 1); 437178354Ssam break; 438178354Ssam default: 439178354Ssam invalid: 440184268Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 441184268Ssam "%s: unexpected state transition %s -> %s\n", __func__, 442178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 443178354Ssam break; 444178354Ssam } 445178354Ssam return 0; 446178354Ssam} 447178354Ssam 448178354Ssam/* 449178354Ssam * Return non-zero if the frame is an echo of a multicast 450178354Ssam * frame sent by ourself. The dir is known to be DSTODS. 451178354Ssam */ 452178354Ssamstatic __inline int 453178354Ssamisdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 454178354Ssam{ 455178354Ssam#define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh) 456178354Ssam#define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh) 457178354Ssam const uint8_t *sa; 458178354Ssam 459178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 460178354Ssam 461178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) 462178354Ssam return 0; 463178354Ssam sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4; 464178354Ssam return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr); 465178354Ssam#undef WH4 466178354Ssam#undef QWH4 467178354Ssam} 468178354Ssam 469178354Ssam/* 470178354Ssam * Return non-zero if the frame is an echo of a multicast 471178354Ssam * frame sent by ourself. The dir is known to be FROMDS. 472178354Ssam */ 473178354Ssamstatic __inline int 474178354Ssamisfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 475178354Ssam{ 476178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 477178354Ssam 478178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) 479178354Ssam return 0; 480178354Ssam return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 481178354Ssam} 482178354Ssam 483178354Ssam/* 484178354Ssam * Decide if a received management frame should be 485178354Ssam * printed when debugging is enabled. This filters some 486178354Ssam * of the less interesting frames that come frequently 487178354Ssam * (e.g. beacons). 488178354Ssam */ 489178354Ssamstatic __inline int 490178354Ssamdoprint(struct ieee80211vap *vap, int subtype) 491178354Ssam{ 492178354Ssam switch (subtype) { 493178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: 494178354Ssam return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); 495178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 496178354Ssam return 0; 497178354Ssam } 498178354Ssam return 1; 499178354Ssam} 500178354Ssam 501178354Ssam/* 502178354Ssam * Process a received frame. The node associated with the sender 503178354Ssam * should be supplied. If nothing was found in the node table then 504178354Ssam * the caller is assumed to supply a reference to iv_bss instead. 505178354Ssam * The RSSI and a timestamp are also supplied. The RSSI data is used 506178354Ssam * during AP scanning to select a AP to associate with; it can have 507178354Ssam * any units so long as values have consistent units and higher values 508178354Ssam * mean ``better signal''. The receive timestamp is currently not used 509178354Ssam * by the 802.11 layer. 510178354Ssam */ 511178354Ssamstatic int 512192468Ssamsta_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 513178354Ssam{ 514178354Ssam#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 515178354Ssam#define HAS_SEQ(type) ((type & 0x4) == 0) 516178354Ssam struct ieee80211vap *vap = ni->ni_vap; 517178354Ssam struct ieee80211com *ic = ni->ni_ic; 518178354Ssam struct ifnet *ifp = vap->iv_ifp; 519178354Ssam struct ieee80211_frame *wh; 520178354Ssam struct ieee80211_key *key; 521178354Ssam struct ether_header *eh; 522203422Srpaulo int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ 523178354Ssam uint8_t dir, type, subtype, qos; 524178354Ssam uint8_t *bssid; 525178354Ssam uint16_t rxseq; 526178354Ssam 527183247Ssam if (m->m_flags & M_AMPDU_MPDU) { 528178354Ssam /* 529178354Ssam * Fastpath for A-MPDU reorder q resubmission. Frames 530183247Ssam * w/ M_AMPDU_MPDU marked have already passed through 531183247Ssam * here but were received out of order and been held on 532183247Ssam * the reorder queue. When resubmitted they are marked 533183247Ssam * with the M_AMPDU_MPDU flag and we can bypass most of 534183247Ssam * the normal processing. 535178354Ssam */ 536178354Ssam wh = mtod(m, struct ieee80211_frame *); 537178354Ssam type = IEEE80211_FC0_TYPE_DATA; 538178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 539178354Ssam subtype = IEEE80211_FC0_SUBTYPE_QOS; 540178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ 541178354Ssam goto resubmit_ampdu; 542178354Ssam } 543178354Ssam 544178354Ssam KASSERT(ni != NULL, ("null node")); 545178354Ssam ni->ni_inact = ni->ni_inact_reload; 546178354Ssam 547178354Ssam type = -1; /* undefined */ 548178354Ssam 549178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 550178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 551178354Ssam ni->ni_macaddr, NULL, 552178354Ssam "too short (1): len %u", m->m_pkthdr.len); 553178354Ssam vap->iv_stats.is_rx_tooshort++; 554178354Ssam goto out; 555178354Ssam } 556178354Ssam /* 557178354Ssam * Bit of a cheat here, we use a pointer for a 3-address 558178354Ssam * frame format but don't reference fields past outside 559178354Ssam * ieee80211_frame_min w/o first validating the data is 560178354Ssam * present. 561178354Ssam */ 562178354Ssam wh = mtod(m, struct ieee80211_frame *); 563178354Ssam 564178354Ssam if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 565178354Ssam IEEE80211_FC0_VERSION_0) { 566178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 567191547Ssam ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", 568191547Ssam wh->i_fc[0], wh->i_fc[1]); 569178354Ssam vap->iv_stats.is_rx_badversion++; 570178354Ssam goto err; 571178354Ssam } 572178354Ssam 573178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 574178354Ssam type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 575178354Ssam subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 576178354Ssam if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 577178354Ssam bssid = wh->i_addr2; 578178354Ssam if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { 579178354Ssam /* not interested in */ 580178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 581178354Ssam bssid, NULL, "%s", "not to bss"); 582178354Ssam vap->iv_stats.is_rx_wrongbss++; 583178354Ssam goto out; 584178354Ssam } 585178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 586192468Ssam ni->ni_noise = nf; 587178354Ssam if (HAS_SEQ(type)) { 588178354Ssam uint8_t tid = ieee80211_gettid(wh); 589178354Ssam if (IEEE80211_QOS_HAS_SEQ(wh) && 590178354Ssam TID_TO_WME_AC(tid) >= WME_AC_VI) 591178354Ssam ic->ic_wme.wme_hipri_traffic++; 592178354Ssam rxseq = le16toh(*(uint16_t *)wh->i_seq); 593178354Ssam if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 594178354Ssam (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 595178354Ssam SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 596178354Ssam /* duplicate, discard */ 597178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 598178354Ssam bssid, "duplicate", 599178354Ssam "seqno <%u,%u> fragno <%u,%u> tid %u", 600178354Ssam rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 601178354Ssam ni->ni_rxseqs[tid] >> 602178354Ssam IEEE80211_SEQ_SEQ_SHIFT, 603178354Ssam rxseq & IEEE80211_SEQ_FRAG_MASK, 604178354Ssam ni->ni_rxseqs[tid] & 605178354Ssam IEEE80211_SEQ_FRAG_MASK, 606178354Ssam tid); 607178354Ssam vap->iv_stats.is_rx_dup++; 608178354Ssam IEEE80211_NODE_STAT(ni, rx_dup); 609178354Ssam goto out; 610178354Ssam } 611178354Ssam ni->ni_rxseqs[tid] = rxseq; 612178354Ssam } 613178354Ssam } 614178354Ssam 615178354Ssam switch (type) { 616178354Ssam case IEEE80211_FC0_TYPE_DATA: 617178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 618178354Ssam if (m->m_len < hdrspace && 619178354Ssam (m = m_pullup(m, hdrspace)) == NULL) { 620178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 621178354Ssam ni->ni_macaddr, NULL, 622178354Ssam "data too short: expecting %u", hdrspace); 623178354Ssam vap->iv_stats.is_rx_tooshort++; 624178354Ssam goto out; /* XXX */ 625178354Ssam } 626178354Ssam /* 627183247Ssam * Handle A-MPDU re-ordering. If the frame is to be 628183247Ssam * processed directly then ieee80211_ampdu_reorder 629178354Ssam * will return 0; otherwise it has consumed the mbuf 630178354Ssam * and we should do nothing more with it. 631178354Ssam */ 632183247Ssam if ((m->m_flags & M_AMPDU) && 633178354Ssam (dir == IEEE80211_FC1_DIR_FROMDS || 634178354Ssam dir == IEEE80211_FC1_DIR_DSTODS) && 635178354Ssam ieee80211_ampdu_reorder(ni, m) != 0) { 636178354Ssam m = NULL; 637178354Ssam goto out; 638178354Ssam } 639178354Ssam resubmit_ampdu: 640178354Ssam if (dir == IEEE80211_FC1_DIR_FROMDS) { 641178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 642178354Ssam isfromds_mcastecho(vap, wh)) { 643178354Ssam /* 644178354Ssam * In IEEE802.11 network, multicast 645178354Ssam * packets sent from "me" are broadcast 646178354Ssam * from the AP; silently discard for 647178354Ssam * SIMPLEX interface. 648178354Ssam */ 649178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 650178354Ssam wh, "data", "%s", "multicast echo"); 651178354Ssam vap->iv_stats.is_rx_mcastecho++; 652178354Ssam goto out; 653178354Ssam } 654178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) && 655178354Ssam IEEE80211_IS_MULTICAST(wh->i_addr1)) { 656178354Ssam /* 657178354Ssam * DWDS sta's must drop 3-address mcast frames 658178354Ssam * as they will be sent separately as a 4-addr 659178354Ssam * frame. Accepting the 3-addr frame will 660178354Ssam * confuse the bridge into thinking the sending 661178354Ssam * sta is located at the end of WDS link. 662178354Ssam */ 663178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 664178354Ssam "3-address data", "%s", "DWDS enabled"); 665178354Ssam vap->iv_stats.is_rx_mcastecho++; 666178354Ssam goto out; 667178354Ssam } 668178354Ssam } else if (dir == IEEE80211_FC1_DIR_DSTODS) { 669178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) { 670178354Ssam IEEE80211_DISCARD(vap, 671178354Ssam IEEE80211_MSG_INPUT, wh, "4-address data", 672178354Ssam "%s", "DWDS not enabled"); 673178354Ssam vap->iv_stats.is_rx_wrongdir++; 674178354Ssam goto out; 675178354Ssam } 676178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 677178354Ssam isdstods_mcastecho(vap, wh)) { 678178354Ssam /* 679178354Ssam * In IEEE802.11 network, multicast 680178354Ssam * packets sent from "me" are broadcast 681178354Ssam * from the AP; silently discard for 682178354Ssam * SIMPLEX interface. 683178354Ssam */ 684178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 685178354Ssam "4-address data", "%s", "multicast echo"); 686178354Ssam vap->iv_stats.is_rx_mcastecho++; 687178354Ssam goto out; 688178354Ssam } 689178354Ssam } else { 690178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 691178354Ssam "data", "incorrect dir 0x%x", dir); 692178354Ssam vap->iv_stats.is_rx_wrongdir++; 693178354Ssam goto out; 694178354Ssam } 695178354Ssam 696178354Ssam /* 697178354Ssam * Handle privacy requirements. Note that we 698178354Ssam * must not be preempted from here until after 699178354Ssam * we (potentially) call ieee80211_crypto_demic; 700178354Ssam * otherwise we may violate assumptions in the 701178354Ssam * crypto cipher modules used to do delayed update 702178354Ssam * of replay sequence numbers. 703178354Ssam */ 704178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 705178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 706178354Ssam /* 707178354Ssam * Discard encrypted frames when privacy is off. 708178354Ssam */ 709178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 710178354Ssam wh, "WEP", "%s", "PRIVACY off"); 711178354Ssam vap->iv_stats.is_rx_noprivacy++; 712178354Ssam IEEE80211_NODE_STAT(ni, rx_noprivacy); 713178354Ssam goto out; 714178354Ssam } 715178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 716178354Ssam if (key == NULL) { 717178354Ssam /* NB: stats+msgs handled in crypto_decap */ 718178354Ssam IEEE80211_NODE_STAT(ni, rx_wepfail); 719178354Ssam goto out; 720178354Ssam } 721178354Ssam wh = mtod(m, struct ieee80211_frame *); 722178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 723178354Ssam } else { 724178354Ssam /* XXX M_WEP and IEEE80211_F_PRIVACY */ 725178354Ssam key = NULL; 726178354Ssam } 727178354Ssam 728178354Ssam /* 729178354Ssam * Save QoS bits for use below--before we strip the header. 730178354Ssam */ 731178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 732178354Ssam qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 733178354Ssam ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 734178354Ssam ((struct ieee80211_qosframe *)wh)->i_qos[0]; 735178354Ssam } else 736178354Ssam qos = 0; 737178354Ssam 738178354Ssam /* 739178354Ssam * Next up, any fragmentation. 740178354Ssam */ 741178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 742178354Ssam m = ieee80211_defrag(ni, m, hdrspace); 743178354Ssam if (m == NULL) { 744178354Ssam /* Fragment dropped or frame not complete yet */ 745178354Ssam goto out; 746178354Ssam } 747178354Ssam } 748178354Ssam wh = NULL; /* no longer valid, catch any uses */ 749178354Ssam 750178354Ssam /* 751178354Ssam * Next strip any MSDU crypto bits. 752178354Ssam */ 753178354Ssam if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { 754178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 755178354Ssam ni->ni_macaddr, "data", "%s", "demic error"); 756178354Ssam vap->iv_stats.is_rx_demicfail++; 757178354Ssam IEEE80211_NODE_STAT(ni, rx_demicfail); 758178354Ssam goto out; 759178354Ssam } 760178354Ssam 761178354Ssam /* copy to listener after decrypt */ 762192468Ssam if (ieee80211_radiotap_active_vap(vap)) 763202967Srpaulo ieee80211_radiotap_rx(vap, m); 764178354Ssam need_tap = 0; 765178354Ssam 766178354Ssam /* 767178354Ssam * Finally, strip the 802.11 header. 768178354Ssam */ 769178354Ssam m = ieee80211_decap(vap, m, hdrspace); 770178354Ssam if (m == NULL) { 771178354Ssam /* XXX mask bit to check for both */ 772178354Ssam /* don't count Null data frames as errors */ 773178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 774178354Ssam subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 775178354Ssam goto out; 776178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 777178354Ssam ni->ni_macaddr, "data", "%s", "decap error"); 778178354Ssam vap->iv_stats.is_rx_decap++; 779178354Ssam IEEE80211_NODE_STAT(ni, rx_decap); 780178354Ssam goto err; 781178354Ssam } 782178354Ssam eh = mtod(m, struct ether_header *); 783178354Ssam if (!ieee80211_node_is_authorized(ni)) { 784178354Ssam /* 785178354Ssam * Deny any non-PAE frames received prior to 786178354Ssam * authorization. For open/shared-key 787178354Ssam * authentication the port is mark authorized 788178354Ssam * after authentication completes. For 802.1x 789178354Ssam * the port is not marked authorized by the 790178354Ssam * authenticator until the handshake has completed. 791178354Ssam */ 792178354Ssam if (eh->ether_type != htons(ETHERTYPE_PAE)) { 793178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 794178354Ssam eh->ether_shost, "data", 795178354Ssam "unauthorized port: ether type 0x%x len %u", 796178354Ssam eh->ether_type, m->m_pkthdr.len); 797178354Ssam vap->iv_stats.is_rx_unauth++; 798178354Ssam IEEE80211_NODE_STAT(ni, rx_unauth); 799178354Ssam goto err; 800178354Ssam } 801178354Ssam } else { 802178354Ssam /* 803178354Ssam * When denying unencrypted frames, discard 804178354Ssam * any non-PAE frames received without encryption. 805178354Ssam */ 806178354Ssam if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && 807178354Ssam (key == NULL && (m->m_flags & M_WEP) == 0) && 808178354Ssam eh->ether_type != htons(ETHERTYPE_PAE)) { 809178354Ssam /* 810178354Ssam * Drop unencrypted frames. 811178354Ssam */ 812178354Ssam vap->iv_stats.is_rx_unencrypted++; 813178354Ssam IEEE80211_NODE_STAT(ni, rx_unencrypted); 814178354Ssam goto out; 815178354Ssam } 816178354Ssam } 817178354Ssam /* XXX require HT? */ 818178354Ssam if (qos & IEEE80211_QOS_AMSDU) { 819178354Ssam m = ieee80211_decap_amsdu(ni, m); 820178354Ssam if (m == NULL) 821178354Ssam return IEEE80211_FC0_TYPE_DATA; 822190391Ssam } else { 823190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 824190391Ssam m = ieee80211_decap_fastframe(vap, ni, m); 825190391Ssam if (m == NULL) 826178354Ssam return IEEE80211_FC0_TYPE_DATA; 827190391Ssam#endif 828178354Ssam } 829178354Ssam ieee80211_deliver_data(vap, ni, m); 830178354Ssam return IEEE80211_FC0_TYPE_DATA; 831178354Ssam 832178354Ssam case IEEE80211_FC0_TYPE_MGT: 833178354Ssam vap->iv_stats.is_rx_mgmt++; 834178354Ssam IEEE80211_NODE_STAT(ni, rx_mgmt); 835178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 836178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 837178354Ssam wh, "data", "incorrect dir 0x%x", dir); 838178354Ssam vap->iv_stats.is_rx_wrongdir++; 839178354Ssam goto err; 840178354Ssam } 841178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 842178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 843178354Ssam ni->ni_macaddr, "mgt", "too short: len %u", 844178354Ssam m->m_pkthdr.len); 845178354Ssam vap->iv_stats.is_rx_tooshort++; 846178354Ssam goto out; 847178354Ssam } 848178354Ssam#ifdef IEEE80211_DEBUG 849178354Ssam if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || 850178354Ssam ieee80211_msg_dumppkts(vap)) { 851178354Ssam if_printf(ifp, "received %s from %s rssi %d\n", 852178354Ssam ieee80211_mgt_subtype_name[subtype >> 853178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 854178354Ssam ether_sprintf(wh->i_addr2), rssi); 855178354Ssam } 856178354Ssam#endif 857178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 858178354Ssam if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { 859178354Ssam /* 860178354Ssam * Only shared key auth frames with a challenge 861178354Ssam * should be encrypted, discard all others. 862178354Ssam */ 863178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 864178354Ssam wh, ieee80211_mgt_subtype_name[subtype >> 865178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 866178354Ssam "%s", "WEP set but not permitted"); 867178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 868178354Ssam goto out; 869178354Ssam } 870178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 871178354Ssam /* 872178354Ssam * Discard encrypted frames when privacy is off. 873178354Ssam */ 874178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 875178354Ssam wh, "mgt", "%s", "WEP set but PRIVACY off"); 876178354Ssam vap->iv_stats.is_rx_noprivacy++; 877178354Ssam goto out; 878178354Ssam } 879178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 880178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 881178354Ssam if (key == NULL) { 882178354Ssam /* NB: stats+msgs handled in crypto_decap */ 883178354Ssam goto out; 884178354Ssam } 885178354Ssam wh = mtod(m, struct ieee80211_frame *); 886178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 887178354Ssam } 888192468Ssam vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 889191534Ssam goto out; 890178354Ssam 891178354Ssam case IEEE80211_FC0_TYPE_CTL: 892178354Ssam vap->iv_stats.is_rx_ctl++; 893178354Ssam IEEE80211_NODE_STAT(ni, rx_ctrl); 894191546Ssam vap->iv_recv_ctl(ni, m, subtype); 895178354Ssam goto out; 896191549Ssam 897178354Ssam default: 898178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 899178354Ssam wh, NULL, "bad frame type 0x%x", type); 900178354Ssam /* should not come here */ 901178354Ssam break; 902178354Ssam } 903178354Ssamerr: 904178354Ssam ifp->if_ierrors++; 905178354Ssamout: 906178354Ssam if (m != NULL) { 907192765Ssam if (need_tap && ieee80211_radiotap_active_vap(vap)) 908192468Ssam ieee80211_radiotap_rx(vap, m); 909178354Ssam m_freem(m); 910178354Ssam } 911178354Ssam return type; 912178354Ssam#undef SEQ_LEQ 913178354Ssam} 914178354Ssam 915178354Ssamstatic void 916178354Ssamsta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, 917192468Ssam int rssi, int nf, uint16_t seq, uint16_t status) 918178354Ssam{ 919178354Ssam struct ieee80211vap *vap = ni->ni_vap; 920178354Ssam 921178354Ssam if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { 922178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 923178354Ssam ni->ni_macaddr, "open auth", 924178354Ssam "bad sta auth mode %u", ni->ni_authmode); 925178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX */ 926178354Ssam return; 927178354Ssam } 928178354Ssam if (vap->iv_state != IEEE80211_S_AUTH || 929178354Ssam seq != IEEE80211_AUTH_OPEN_RESPONSE) { 930178354Ssam vap->iv_stats.is_rx_bad_auth++; 931178354Ssam return; 932178354Ssam } 933178354Ssam if (status != 0) { 934178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, 935178354Ssam ni, "open auth failed (reason %d)", status); 936178354Ssam vap->iv_stats.is_rx_auth_fail++; 937178354Ssam vap->iv_stats.is_rx_authfail_code = status; 938178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 939178354Ssam IEEE80211_SCAN_FAIL_STATUS); 940178354Ssam } else 941178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 942178354Ssam} 943178354Ssam 944178354Ssamstatic void 945178354Ssamsta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, 946192468Ssam uint8_t *frm, uint8_t *efrm, int rssi, int nf, 947178354Ssam uint16_t seq, uint16_t status) 948178354Ssam{ 949178354Ssam struct ieee80211vap *vap = ni->ni_vap; 950178354Ssam uint8_t *challenge; 951178354Ssam int estatus; 952178354Ssam 953178354Ssam /* 954178354Ssam * NB: this can happen as we allow pre-shared key 955178354Ssam * authentication to be enabled w/o wep being turned 956178354Ssam * on so that configuration of these can be done 957178354Ssam * in any order. It may be better to enforce the 958178354Ssam * ordering in which case this check would just be 959178354Ssam * for sanity/consistency. 960178354Ssam */ 961178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 962178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 963178354Ssam ni->ni_macaddr, "shared key auth", 964178354Ssam "%s", " PRIVACY is disabled"); 965178354Ssam estatus = IEEE80211_STATUS_ALG; 966178354Ssam goto bad; 967178354Ssam } 968178354Ssam /* 969178354Ssam * Pre-shared key authentication is evil; accept 970178354Ssam * it only if explicitly configured (it is supported 971178354Ssam * mainly for compatibility with clients like OS X). 972178354Ssam */ 973178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_AUTO && 974178354Ssam ni->ni_authmode != IEEE80211_AUTH_SHARED) { 975178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 976178354Ssam ni->ni_macaddr, "shared key auth", 977178354Ssam "bad sta auth mode %u", ni->ni_authmode); 978178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */ 979178354Ssam estatus = IEEE80211_STATUS_ALG; 980178354Ssam goto bad; 981178354Ssam } 982178354Ssam 983178354Ssam challenge = NULL; 984178354Ssam if (frm + 1 < efrm) { 985178354Ssam if ((frm[1] + 2) > (efrm - frm)) { 986178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 987178354Ssam ni->ni_macaddr, "shared key auth", 988178354Ssam "ie %d/%d too long", 989178354Ssam frm[0], (frm[1] + 2) - (efrm - frm)); 990178354Ssam vap->iv_stats.is_rx_bad_auth++; 991178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 992178354Ssam goto bad; 993178354Ssam } 994178354Ssam if (*frm == IEEE80211_ELEMID_CHALLENGE) 995178354Ssam challenge = frm; 996178354Ssam frm += frm[1] + 2; 997178354Ssam } 998178354Ssam switch (seq) { 999178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1000178354Ssam case IEEE80211_AUTH_SHARED_RESPONSE: 1001178354Ssam if (challenge == NULL) { 1002178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1003178354Ssam ni->ni_macaddr, "shared key auth", 1004178354Ssam "%s", "no challenge"); 1005178354Ssam vap->iv_stats.is_rx_bad_auth++; 1006178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1007178354Ssam goto bad; 1008178354Ssam } 1009178354Ssam if (challenge[1] != IEEE80211_CHALLENGE_LEN) { 1010178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1011178354Ssam ni->ni_macaddr, "shared key auth", 1012178354Ssam "bad challenge len %d", challenge[1]); 1013178354Ssam vap->iv_stats.is_rx_bad_auth++; 1014178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1015178354Ssam goto bad; 1016178354Ssam } 1017178354Ssam default: 1018178354Ssam break; 1019178354Ssam } 1020178354Ssam if (vap->iv_state != IEEE80211_S_AUTH) 1021178354Ssam return; 1022178354Ssam switch (seq) { 1023178354Ssam case IEEE80211_AUTH_SHARED_PASS: 1024178354Ssam if (ni->ni_challenge != NULL) { 1025186302Ssam free(ni->ni_challenge, M_80211_NODE); 1026178354Ssam ni->ni_challenge = NULL; 1027178354Ssam } 1028178354Ssam if (status != 0) { 1029178354Ssam IEEE80211_NOTE_FRAME(vap, 1030178354Ssam IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh, 1031178354Ssam "shared key auth failed (reason %d)", status); 1032178354Ssam vap->iv_stats.is_rx_auth_fail++; 1033178354Ssam vap->iv_stats.is_rx_authfail_code = status; 1034178354Ssam return; 1035178354Ssam } 1036178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1037178354Ssam break; 1038178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1039178354Ssam if (!ieee80211_alloc_challenge(ni)) 1040178354Ssam return; 1041178354Ssam /* XXX could optimize by passing recvd challenge */ 1042178354Ssam memcpy(ni->ni_challenge, &challenge[2], challenge[1]); 1043178354Ssam IEEE80211_SEND_MGMT(ni, 1044178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); 1045178354Ssam break; 1046178354Ssam default: 1047178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH, 1048178354Ssam wh, "shared key auth", "bad seq %d", seq); 1049178354Ssam vap->iv_stats.is_rx_bad_auth++; 1050178354Ssam return; 1051178354Ssam } 1052178354Ssam return; 1053178354Ssambad: 1054178354Ssam /* 1055178354Ssam * Kick the state machine. This short-circuits 1056178354Ssam * using the mgt frame timeout to trigger the 1057178354Ssam * state transition. 1058178354Ssam */ 1059178354Ssam if (vap->iv_state == IEEE80211_S_AUTH) 1060178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1061178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1062178354Ssam} 1063178354Ssam 1064178354Ssamstatic int 1065178354Ssamieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm, 1066178354Ssam const struct ieee80211_frame *wh) 1067178354Ssam{ 1068178354Ssam#define MS(_v, _f) (((_v) & _f) >> _f##_S) 1069178354Ssam struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme; 1070178354Ssam u_int len = frm[1], qosinfo; 1071178354Ssam int i; 1072178354Ssam 1073178354Ssam if (len < sizeof(struct ieee80211_wme_param)-2) { 1074178354Ssam IEEE80211_DISCARD_IE(vap, 1075178354Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, 1076178354Ssam wh, "WME", "too short, len %u", len); 1077178354Ssam return -1; 1078178354Ssam } 1079178354Ssam qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)]; 1080178354Ssam qosinfo &= WME_QOSINFO_COUNT; 1081178354Ssam /* XXX do proper check for wraparound */ 1082178354Ssam if (qosinfo == wme->wme_wmeChanParams.cap_info) 1083178354Ssam return 0; 1084178354Ssam frm += __offsetof(struct ieee80211_wme_param, params_acParams); 1085178354Ssam for (i = 0; i < WME_NUM_AC; i++) { 1086178354Ssam struct wmeParams *wmep = 1087178354Ssam &wme->wme_wmeChanParams.cap_wmeParams[i]; 1088178354Ssam /* NB: ACI not used */ 1089178354Ssam wmep->wmep_acm = MS(frm[0], WME_PARAM_ACM); 1090178354Ssam wmep->wmep_aifsn = MS(frm[0], WME_PARAM_AIFSN); 1091178354Ssam wmep->wmep_logcwmin = MS(frm[1], WME_PARAM_LOGCWMIN); 1092178354Ssam wmep->wmep_logcwmax = MS(frm[1], WME_PARAM_LOGCWMAX); 1093178354Ssam wmep->wmep_txopLimit = LE_READ_2(frm+2); 1094178354Ssam frm += 4; 1095178354Ssam } 1096178354Ssam wme->wme_wmeChanParams.cap_info = qosinfo; 1097178354Ssam return 1; 1098178354Ssam#undef MS 1099178354Ssam} 1100178354Ssam 1101178354Ssam/* 1102193439Ssam * Process 11h Channel Switch Announcement (CSA) ie. If this 1103193439Ssam * is the first CSA then initiate the switch. Otherwise we 1104193439Ssam * track state and trigger completion and/or cancel of the switch. 1105193439Ssam * XXX should be public for IBSS use 1106193439Ssam */ 1107193439Ssamstatic void 1108193439Ssamieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm, 1109193439Ssam const struct ieee80211_frame *wh) 1110193439Ssam{ 1111193439Ssam struct ieee80211com *ic = vap->iv_ic; 1112193439Ssam const struct ieee80211_csa_ie *csa = 1113193439Ssam (const struct ieee80211_csa_ie *) frm; 1114193439Ssam 1115193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 1116193439Ssam ("state %s", ieee80211_state_name[vap->iv_state])); 1117193439Ssam 1118193439Ssam if (csa->csa_mode > 1) { 1119193439Ssam IEEE80211_DISCARD_IE(vap, 1120193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1121193439Ssam wh, "CSA", "invalid mode %u", csa->csa_mode); 1122193439Ssam return; 1123193439Ssam } 1124193439Ssam IEEE80211_LOCK(ic); 1125193439Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 1126193439Ssam /* 1127193439Ssam * Convert the channel number to a channel reference. We 1128193439Ssam * try first to preserve turbo attribute of the current 1129193439Ssam * channel then fallback. Note this will not work if the 1130193439Ssam * CSA specifies a channel that requires a band switch (e.g. 1131193439Ssam * 11a => 11g). This is intentional as 11h is defined only 1132193439Ssam * for 5GHz/11a and because the switch does not involve a 1133193439Ssam * reassociation, protocol state (capabilities, negotated 1134193439Ssam * rates, etc) may/will be wrong. 1135193439Ssam */ 1136193439Ssam struct ieee80211_channel *c = 1137193439Ssam ieee80211_find_channel_byieee(ic, csa->csa_newchan, 1138193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO)); 1139193439Ssam if (c == NULL) { 1140193439Ssam c = ieee80211_find_channel_byieee(ic, 1141193439Ssam csa->csa_newchan, 1142193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL)); 1143193439Ssam if (c == NULL) { 1144193439Ssam IEEE80211_DISCARD_IE(vap, 1145193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1146193439Ssam wh, "CSA", "invalid channel %u", 1147193439Ssam csa->csa_newchan); 1148193439Ssam goto done; 1149193439Ssam } 1150193439Ssam } 1151193439Ssam#if IEEE80211_CSA_COUNT_MIN > 0 1152193439Ssam if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) { 1153193439Ssam /* 1154193439Ssam * Require at least IEEE80211_CSA_COUNT_MIN count to 1155193439Ssam * reduce the risk of being redirected by a fabricated 1156193439Ssam * CSA. If a valid CSA is dropped we'll still get a 1157193439Ssam * beacon miss when the AP leaves the channel so we'll 1158193439Ssam * eventually follow to the new channel. 1159193439Ssam * 1160193439Ssam * NOTE: this violates the 11h spec that states that 1161193439Ssam * count may be any value and if 0 then a switch 1162193439Ssam * should happen asap. 1163193439Ssam */ 1164193439Ssam IEEE80211_DISCARD_IE(vap, 1165193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1166193439Ssam wh, "CSA", "count %u too small, must be >= %u", 1167193439Ssam csa->csa_count, IEEE80211_CSA_COUNT_MIN); 1168193439Ssam goto done; 1169193439Ssam } 1170193439Ssam#endif 1171193439Ssam ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count); 1172193439Ssam } else { 1173193439Ssam /* 1174193439Ssam * Validate this ie against the initial CSA. We require 1175193439Ssam * mode and channel not change and the count must be 1176193439Ssam * monotonically decreasing. This may be pointless and 1177193439Ssam * canceling the switch as a result may be too paranoid but 1178193439Ssam * in the worst case if we drop out of CSA because of this 1179193439Ssam * and the AP does move then we'll just end up taking a 1180193439Ssam * beacon miss and scan to find the AP. 1181193439Ssam * 1182193439Ssam * XXX may want <= on count as we also process ProbeResp 1183193439Ssam * frames and those may come in w/ the same count as the 1184193439Ssam * previous beacon; but doing so leaves us open to a stuck 1185193439Ssam * count until we add a dead-man timer 1186193439Ssam */ 1187193439Ssam if (!(csa->csa_count < ic->ic_csa_count && 1188193439Ssam csa->csa_mode == ic->ic_csa_mode && 1189193439Ssam csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) { 1190193439Ssam IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh, 1191193439Ssam "CSA ie mismatch, initial ie <%d,%d,%d>, " 1192193439Ssam "this ie <%d,%d,%d>", ic->ic_csa_mode, 1193193439Ssam ic->ic_csa_newchan, ic->ic_csa_count, 1194193439Ssam csa->csa_mode, csa->csa_newchan, csa->csa_count); 1195193439Ssam ieee80211_csa_cancelswitch(ic); 1196193439Ssam } else { 1197193439Ssam if (csa->csa_count <= 1) 1198193439Ssam ieee80211_csa_completeswitch(ic); 1199193439Ssam else 1200193439Ssam ic->ic_csa_count = csa->csa_count; 1201193439Ssam } 1202193439Ssam } 1203193439Ssamdone: 1204193439Ssam IEEE80211_UNLOCK(ic); 1205193439Ssam} 1206193439Ssam 1207193439Ssam/* 1208178354Ssam * Return non-zero if a background scan may be continued: 1209178354Ssam * o bg scan is active 1210178354Ssam * o no channel switch is pending 1211178354Ssam * o there has not been any traffic recently 1212178354Ssam * 1213178354Ssam * Note we do not check if there is an administrative enable; 1214178354Ssam * this is only done to start the scan. We assume that any 1215178354Ssam * change in state will be accompanied by a request to cancel 1216178354Ssam * active scans which will otherwise cause this test to fail. 1217178354Ssam */ 1218178354Ssamstatic __inline int 1219178354Ssamcontbgscan(struct ieee80211vap *vap) 1220178354Ssam{ 1221178354Ssam struct ieee80211com *ic = vap->iv_ic; 1222178354Ssam 1223178354Ssam return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) && 1224178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1225178354Ssam vap->iv_state == IEEE80211_S_RUN && /* XXX? */ 1226178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1227178354Ssam} 1228178354Ssam 1229178354Ssam/* 1230178354Ssam * Return non-zero if a backgrond scan may be started: 1231178354Ssam * o bg scanning is administratively enabled 1232178354Ssam * o no channel switch is pending 1233178354Ssam * o we are not boosted on a dynamic turbo channel 1234178354Ssam * o there has not been a scan recently 1235178354Ssam * o there has not been any traffic recently 1236178354Ssam */ 1237178354Ssamstatic __inline int 1238178354Ssamstartbgscan(struct ieee80211vap *vap) 1239178354Ssam{ 1240178354Ssam struct ieee80211com *ic = vap->iv_ic; 1241178354Ssam 1242178354Ssam return ((vap->iv_flags & IEEE80211_F_BGSCAN) && 1243178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1244190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1245178354Ssam !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && 1246190391Ssam#endif 1247178354Ssam time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) && 1248178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1249178354Ssam} 1250178354Ssam 1251178354Ssamstatic void 1252178354Ssamsta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, 1253192468Ssam int subtype, int rssi, int nf) 1254178354Ssam{ 1255178354Ssam#define ISPROBE(_st) ((_st) == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1256178354Ssam#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP) 1257178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1258178354Ssam struct ieee80211com *ic = ni->ni_ic; 1259178354Ssam struct ieee80211_frame *wh; 1260178354Ssam uint8_t *frm, *efrm; 1261178354Ssam uint8_t *rates, *xrates, *wme, *htcap, *htinfo; 1262178354Ssam uint8_t rate; 1263178354Ssam 1264178354Ssam wh = mtod(m0, struct ieee80211_frame *); 1265178354Ssam frm = (uint8_t *)&wh[1]; 1266178354Ssam efrm = mtod(m0, uint8_t *) + m0->m_len; 1267178354Ssam switch (subtype) { 1268178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1269178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: { 1270178354Ssam struct ieee80211_scanparams scan; 1271178354Ssam /* 1272178354Ssam * We process beacon/probe response frames: 1273178354Ssam * o when scanning, or 1274178354Ssam * o station mode when associated (to collect state 1275191444Srpaulo * updates such as 802.11g slot time) 1276178354Ssam * Frames otherwise received are discarded. 1277178354Ssam */ 1278178354Ssam if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) { 1279178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1280178354Ssam return; 1281178354Ssam } 1282178354Ssam /* XXX probe response in sta mode when !scanning? */ 1283178354Ssam if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1284178354Ssam return; 1285178354Ssam /* 1286178354Ssam * Count frame now that we know it's to be processed. 1287178354Ssam */ 1288178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1289178354Ssam vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1290178354Ssam IEEE80211_NODE_STAT(ni, rx_beacons); 1291178354Ssam } else 1292178354Ssam IEEE80211_NODE_STAT(ni, rx_proberesp); 1293178354Ssam /* 1294178354Ssam * When operating in station mode, check for state updates. 1295178354Ssam * Be careful to ignore beacons received while doing a 1296178354Ssam * background scan. We consider only 11g/WMM stuff right now. 1297178354Ssam */ 1298178354Ssam if (ni->ni_associd != 0 && 1299178354Ssam ((ic->ic_flags & IEEE80211_F_SCAN) == 0 || 1300178354Ssam IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) { 1301178354Ssam /* record tsf of last beacon */ 1302178354Ssam memcpy(ni->ni_tstamp.data, scan.tstamp, 1303178354Ssam sizeof(ni->ni_tstamp)); 1304178354Ssam /* count beacon frame for s/w bmiss handling */ 1305178354Ssam vap->iv_swbmiss_count++; 1306178354Ssam vap->iv_bmiss_count = 0; 1307178354Ssam if (ni->ni_erp != scan.erp) { 1308178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1309178354Ssam wh->i_addr2, 1310178354Ssam "erp change: was 0x%x, now 0x%x", 1311178354Ssam ni->ni_erp, scan.erp); 1312178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1313178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1314178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1315178354Ssam else 1316178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1317178354Ssam ni->ni_erp = scan.erp; 1318178354Ssam /* XXX statistic */ 1319178354Ssam /* XXX driver notification */ 1320178354Ssam } 1321178354Ssam if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) { 1322178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1323178354Ssam wh->i_addr2, 1324178354Ssam "capabilities change: was 0x%x, now 0x%x", 1325178354Ssam ni->ni_capinfo, scan.capinfo); 1326178354Ssam /* 1327178354Ssam * NB: we assume short preamble doesn't 1328178354Ssam * change dynamically 1329178354Ssam */ 1330178354Ssam ieee80211_set_shortslottime(ic, 1331178354Ssam IEEE80211_IS_CHAN_A(ic->ic_bsschan) || 1332178354Ssam (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1333178354Ssam ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME) 1334178354Ssam | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME); 1335178354Ssam /* XXX statistic */ 1336178354Ssam } 1337178354Ssam if (scan.wme != NULL && 1338178354Ssam (ni->ni_flags & IEEE80211_NODE_QOS) && 1339178354Ssam ieee80211_parse_wmeparams(vap, scan.wme, wh) > 0) 1340178354Ssam ieee80211_wme_updateparams(vap); 1341190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1342178354Ssam if (scan.ath != NULL) 1343178354Ssam ieee80211_parse_athparams(ni, scan.ath, wh); 1344190391Ssam#endif 1345183254Ssam if (scan.htcap != NULL && scan.htinfo != NULL && 1346193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1347183254Ssam ieee80211_ht_updateparams(ni, 1348183254Ssam scan.htcap, scan.htinfo); 1349178354Ssam /* XXX state changes? */ 1350178354Ssam } 1351178354Ssam if (scan.tim != NULL) { 1352178354Ssam struct ieee80211_tim_ie *tim = 1353178354Ssam (struct ieee80211_tim_ie *) scan.tim; 1354178354Ssam#if 0 1355178354Ssam int aid = IEEE80211_AID(ni->ni_associd); 1356178354Ssam int ix = aid / NBBY; 1357178354Ssam int min = tim->tim_bitctl &~ 1; 1358178354Ssam int max = tim->tim_len + min - 4; 1359178354Ssam if ((tim->tim_bitctl&1) || 1360178354Ssam (min <= ix && ix <= max && 1361178354Ssam isset(tim->tim_bitmap - min, aid))) { 1362178354Ssam /* 1363178354Ssam * XXX Do not let bg scan kick off 1364178354Ssam * we are expecting data. 1365178354Ssam */ 1366178354Ssam ic->ic_lastdata = ticks; 1367178354Ssam ieee80211_sta_pwrsave(vap, 0); 1368178354Ssam } 1369178354Ssam#endif 1370178354Ssam ni->ni_dtim_count = tim->tim_count; 1371178354Ssam ni->ni_dtim_period = tim->tim_period; 1372178354Ssam } 1373193439Ssam if (scan.csa != NULL && 1374193439Ssam (vap->iv_flags & IEEE80211_F_DOTH)) 1375193439Ssam ieee80211_parse_csaparams(vap, scan.csa, wh); 1376193439Ssam else if (ic->ic_flags & IEEE80211_F_CSAPENDING) { 1377193439Ssam /* 1378193439Ssam * No CSA ie or 11h disabled, but a channel 1379193439Ssam * switch is pending; drop out so we aren't 1380193439Ssam * stuck in CSA state. If the AP really is 1381193439Ssam * moving we'll get a beacon miss and scan. 1382193439Ssam */ 1383193439Ssam IEEE80211_LOCK(ic); 1384193439Ssam ieee80211_csa_cancelswitch(ic); 1385193439Ssam IEEE80211_UNLOCK(ic); 1386193439Ssam } 1387178354Ssam /* 1388178354Ssam * If scanning, pass the info to the scan module. 1389178354Ssam * Otherwise, check if it's the right time to do 1390178354Ssam * a background scan. Background scanning must 1391178354Ssam * be enabled and we must not be operating in the 1392178354Ssam * turbo phase of dynamic turbo mode. Then, 1393178354Ssam * it's been a while since the last background 1394178354Ssam * scan and if no data frames have come through 1395178354Ssam * recently, kick off a scan. Note that this 1396178354Ssam * is the mechanism by which a background scan 1397178354Ssam * is started _and_ continued each time we 1398178354Ssam * return on-channel to receive a beacon from 1399178354Ssam * our ap. 1400178354Ssam */ 1401178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1402178354Ssam ieee80211_add_scan(vap, &scan, wh, 1403192468Ssam subtype, rssi, nf); 1404178354Ssam } else if (contbgscan(vap)) { 1405178354Ssam ieee80211_bg_scan(vap, 0); 1406178354Ssam } else if (startbgscan(vap)) { 1407178354Ssam vap->iv_stats.is_scan_bg++; 1408178354Ssam#if 0 1409178354Ssam /* wakeup if we are sleeing */ 1410178354Ssam ieee80211_set_pwrsave(vap, 0); 1411178354Ssam#endif 1412178354Ssam ieee80211_bg_scan(vap, 0); 1413178354Ssam } 1414178354Ssam return; 1415178354Ssam } 1416178354Ssam /* 1417178354Ssam * If scanning, just pass information to the scan module. 1418178354Ssam */ 1419178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1420178354Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1421178354Ssam /* 1422178354Ssam * Actively scanning a channel marked passive; 1423178354Ssam * send a probe request now that we know there 1424178354Ssam * is 802.11 traffic present. 1425178354Ssam * 1426178354Ssam * XXX check if the beacon we recv'd gives 1427178354Ssam * us what we need and suppress the probe req 1428178354Ssam */ 1429178354Ssam ieee80211_probe_curchan(vap, 1); 1430178354Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1431178354Ssam } 1432192468Ssam ieee80211_add_scan(vap, &scan, wh, subtype, rssi, nf); 1433178354Ssam return; 1434178354Ssam } 1435178354Ssam break; 1436178354Ssam } 1437178354Ssam 1438178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: { 1439178354Ssam uint16_t algo, seq, status; 1440178354Ssam /* 1441178354Ssam * auth frame format 1442178354Ssam * [2] algorithm 1443178354Ssam * [2] sequence 1444178354Ssam * [2] status 1445178354Ssam * [tlv*] challenge 1446178354Ssam */ 1447178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1448178354Ssam algo = le16toh(*(uint16_t *)frm); 1449178354Ssam seq = le16toh(*(uint16_t *)(frm + 2)); 1450178354Ssam status = le16toh(*(uint16_t *)(frm + 4)); 1451178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, 1452178354Ssam "recv auth frame with algorithm %d seq %d", algo, seq); 1453178354Ssam 1454178354Ssam if (vap->iv_flags & IEEE80211_F_COUNTERM) { 1455178354Ssam IEEE80211_DISCARD(vap, 1456178354Ssam IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, 1457178354Ssam wh, "auth", "%s", "TKIP countermeasures enabled"); 1458178354Ssam vap->iv_stats.is_rx_auth_countermeasures++; 1459178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 1460178354Ssam ieee80211_send_error(ni, wh->i_addr2, 1461178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1462178354Ssam IEEE80211_REASON_MIC_FAILURE); 1463178354Ssam } 1464178354Ssam return; 1465178354Ssam } 1466178354Ssam if (algo == IEEE80211_AUTH_ALG_SHARED) 1467192468Ssam sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, 1468192468Ssam seq, status); 1469178354Ssam else if (algo == IEEE80211_AUTH_ALG_OPEN) 1470192468Ssam sta_auth_open(ni, wh, rssi, nf, seq, status); 1471178354Ssam else { 1472178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1473178354Ssam wh, "auth", "unsupported alg %d", algo); 1474178354Ssam vap->iv_stats.is_rx_auth_unsupported++; 1475178354Ssam return; 1476178354Ssam } 1477178354Ssam break; 1478178354Ssam } 1479178354Ssam 1480178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1481178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: { 1482178354Ssam uint16_t capinfo, associd; 1483178354Ssam uint16_t status; 1484178354Ssam 1485178354Ssam if (vap->iv_state != IEEE80211_S_ASSOC) { 1486178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1487178354Ssam return; 1488178354Ssam } 1489178354Ssam 1490178354Ssam /* 1491178354Ssam * asresp frame format 1492178354Ssam * [2] capability information 1493178354Ssam * [2] status 1494178354Ssam * [2] association ID 1495178354Ssam * [tlv] supported rates 1496178354Ssam * [tlv] extended supported rates 1497178354Ssam * [tlv] WME 1498178354Ssam * [tlv] HT capabilities 1499178354Ssam * [tlv] HT info 1500178354Ssam */ 1501178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1502178354Ssam ni = vap->iv_bss; 1503178354Ssam capinfo = le16toh(*(uint16_t *)frm); 1504178354Ssam frm += 2; 1505178354Ssam status = le16toh(*(uint16_t *)frm); 1506178354Ssam frm += 2; 1507178354Ssam if (status != 0) { 1508178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1509178354Ssam wh->i_addr2, "%sassoc failed (reason %d)", 1510178354Ssam ISREASSOC(subtype) ? "re" : "", status); 1511178354Ssam vap->iv_stats.is_rx_auth_fail++; /* XXX */ 1512178354Ssam return; 1513178354Ssam } 1514178354Ssam associd = le16toh(*(uint16_t *)frm); 1515178354Ssam frm += 2; 1516178354Ssam 1517178354Ssam rates = xrates = wme = htcap = htinfo = NULL; 1518178354Ssam while (efrm - frm > 1) { 1519178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1520178354Ssam switch (*frm) { 1521178354Ssam case IEEE80211_ELEMID_RATES: 1522178354Ssam rates = frm; 1523178354Ssam break; 1524178354Ssam case IEEE80211_ELEMID_XRATES: 1525178354Ssam xrates = frm; 1526178354Ssam break; 1527178354Ssam case IEEE80211_ELEMID_HTCAP: 1528178354Ssam htcap = frm; 1529178354Ssam break; 1530178354Ssam case IEEE80211_ELEMID_HTINFO: 1531178354Ssam htinfo = frm; 1532178354Ssam break; 1533178354Ssam case IEEE80211_ELEMID_VENDOR: 1534178354Ssam if (iswmeoui(frm)) 1535178354Ssam wme = frm; 1536193655Ssam else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { 1537178354Ssam /* 1538178354Ssam * Accept pre-draft HT ie's if the 1539178354Ssam * standard ones have not been seen. 1540178354Ssam */ 1541178354Ssam if (ishtcapoui(frm)) { 1542178354Ssam if (htcap == NULL) 1543178354Ssam htcap = frm; 1544178354Ssam } else if (ishtinfooui(frm)) { 1545178354Ssam if (htinfo == NULL) 1546178354Ssam htcap = frm; 1547178354Ssam } 1548178354Ssam } 1549178354Ssam /* XXX Atheros OUI support */ 1550178354Ssam break; 1551178354Ssam } 1552178354Ssam frm += frm[1] + 2; 1553178354Ssam } 1554178354Ssam 1555178354Ssam IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1556178354Ssam if (xrates != NULL) 1557178354Ssam IEEE80211_VERIFY_ELEMENT(xrates, 1558178354Ssam IEEE80211_RATE_MAXSIZE - rates[1], return); 1559178354Ssam rate = ieee80211_setup_rates(ni, rates, xrates, 1560178354Ssam IEEE80211_F_JOIN | 1561178354Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1562178354Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1563178354Ssam if (rate & IEEE80211_RATE_BASIC) { 1564178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1565178354Ssam wh->i_addr2, 1566178354Ssam "%sassoc failed (rate set mismatch)", 1567178354Ssam ISREASSOC(subtype) ? "re" : ""); 1568178354Ssam vap->iv_stats.is_rx_assoc_norate++; 1569178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1570178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1571178354Ssam return; 1572178354Ssam } 1573178354Ssam 1574178354Ssam ni->ni_capinfo = capinfo; 1575178354Ssam ni->ni_associd = associd; 1576178354Ssam if (ni->ni_jointime == 0) 1577178354Ssam ni->ni_jointime = time_uptime; 1578178354Ssam if (wme != NULL && 1579178354Ssam ieee80211_parse_wmeparams(vap, wme, wh) >= 0) { 1580178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1581178354Ssam ieee80211_wme_updateparams(vap); 1582178354Ssam } else 1583178354Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1584178354Ssam /* 1585178354Ssam * Setup HT state according to the negotiation. 1586178354Ssam * 1587178354Ssam * NB: shouldn't need to check if HT use is enabled but some 1588178354Ssam * ap's send back HT ie's even when we don't indicate we 1589178354Ssam * are HT capable in our AssocReq. 1590178354Ssam */ 1591178354Ssam if (htcap != NULL && htinfo != NULL && 1592193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1593183254Ssam ieee80211_ht_node_init(ni); 1594183254Ssam ieee80211_ht_updateparams(ni, htcap, htinfo); 1595178354Ssam ieee80211_setup_htrates(ni, htcap, 1596178354Ssam IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 1597178354Ssam ieee80211_setup_basic_htrates(ni, htinfo); 1598193966Ssam ieee80211_node_setuptxparms(ni); 1599190579Ssam } else { 1600190579Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1601190579Ssam if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_ATH)) 1602190579Ssam ieee80211_ff_node_init(ni); 1603190579Ssam#endif 1604178354Ssam } 1605178354Ssam /* 1606178354Ssam * Configure state now that we are associated. 1607178354Ssam * 1608178354Ssam * XXX may need different/additional driver callbacks? 1609178354Ssam */ 1610178354Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1611178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) { 1612178354Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 1613178354Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 1614178354Ssam } else { 1615178354Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 1616178354Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 1617178354Ssam } 1618178354Ssam ieee80211_set_shortslottime(ic, 1619178354Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1620178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1621178354Ssam /* 1622178354Ssam * Honor ERP protection. 1623178354Ssam * 1624178354Ssam * NB: ni_erp should zero for non-11g operation. 1625178354Ssam */ 1626178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1627178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1628178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1629178354Ssam else 1630178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1631178354Ssam IEEE80211_NOTE_MAC(vap, 1632178354Ssam IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2, 1633183256Ssam "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 1634178354Ssam ISREASSOC(subtype) ? "re" : "", 1635178354Ssam IEEE80211_NODE_AID(ni), 1636178354Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 1637178354Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 1638178354Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "", 1639178354Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 1640178354Ssam ni->ni_flags & IEEE80211_NODE_HT ? 1641182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 1642178354Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 1643183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 1644183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 1645183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 1646178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 1647178354Ssam ", fast-frames" : "", 1648178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 1649178354Ssam ", turbo" : "" 1650178354Ssam ); 1651178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, subtype); 1652178354Ssam break; 1653178354Ssam } 1654178354Ssam 1655178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: { 1656178354Ssam uint16_t reason; 1657178354Ssam 1658178354Ssam if (vap->iv_state == IEEE80211_S_SCAN) { 1659178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1660178354Ssam return; 1661178354Ssam } 1662178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1663178354Ssam /* NB: can happen when in promiscuous mode */ 1664178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1665178354Ssam break; 1666178354Ssam } 1667178354Ssam 1668178354Ssam /* 1669178354Ssam * deauth frame format 1670178354Ssam * [2] reason 1671178354Ssam */ 1672178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1673178354Ssam reason = le16toh(*(uint16_t *)frm); 1674178354Ssam 1675178354Ssam vap->iv_stats.is_rx_deauth++; 1676178354Ssam vap->iv_stats.is_rx_deauth_code = reason; 1677178354Ssam IEEE80211_NODE_STAT(ni, rx_deauth); 1678178354Ssam 1679178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, 1680178354Ssam "recv deauthenticate (reason %d)", reason); 1681178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 1682178354Ssam (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH); 1683178354Ssam break; 1684178354Ssam } 1685178354Ssam 1686178354Ssam case IEEE80211_FC0_SUBTYPE_DISASSOC: { 1687178354Ssam uint16_t reason; 1688178354Ssam 1689178354Ssam if (vap->iv_state != IEEE80211_S_RUN && 1690178354Ssam vap->iv_state != IEEE80211_S_ASSOC && 1691178354Ssam vap->iv_state != IEEE80211_S_AUTH) { 1692178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1693178354Ssam return; 1694178354Ssam } 1695178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1696178354Ssam /* NB: can happen when in promiscuous mode */ 1697178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1698178354Ssam break; 1699178354Ssam } 1700178354Ssam 1701178354Ssam /* 1702178354Ssam * disassoc frame format 1703178354Ssam * [2] reason 1704178354Ssam */ 1705178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1706178354Ssam reason = le16toh(*(uint16_t *)frm); 1707178354Ssam 1708178354Ssam vap->iv_stats.is_rx_disassoc++; 1709178354Ssam vap->iv_stats.is_rx_disassoc_code = reason; 1710178354Ssam IEEE80211_NODE_STAT(ni, rx_disassoc); 1711178354Ssam 1712178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 1713178354Ssam "recv disassociate (reason %d)", reason); 1714178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1715178354Ssam break; 1716178354Ssam } 1717178354Ssam 1718178354Ssam case IEEE80211_FC0_SUBTYPE_ACTION: 1719178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1720178354Ssam if (ieee80211_parse_action(ni, m0) == 0) 1721195377Ssam ic->ic_recv_action(ni, wh, frm, efrm); 1722178354Ssam } else 1723178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1724178354Ssam break; 1725178354Ssam 1726178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1727178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1728178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1729178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1730178354Ssam return; 1731178354Ssam default: 1732178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1733178354Ssam wh, "mgt", "subtype 0x%x not handled", subtype); 1734178354Ssam vap->iv_stats.is_rx_badsubtype++; 1735178354Ssam break; 1736178354Ssam } 1737178354Ssam#undef ISREASSOC 1738178354Ssam#undef ISPROBE 1739178354Ssam} 1740191546Ssam 1741191546Ssamstatic void 1742205277Srpaulosta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1743191546Ssam{ 1744205277Srpaulo switch (subtype) { 1745205277Srpaulo case IEEE80211_FC0_SUBTYPE_BAR: 1746205277Srpaulo ieee80211_recv_bar(ni, m); 1747205277Srpaulo break; 1748205277Srpaulo } 1749191546Ssam} 1750