ieee80211_sta.c revision 193966
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 193966 2009-06-11 04:43:42Z sam $"); 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 } 144178354Ssam vap->iv_bmiss_count = 0; 145178354Ssam vap->iv_stats.is_beacon_miss++; 146178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 147190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 148190402Ssam struct ieee80211com *ic = vap->iv_ic; 149190402Ssam 150178354Ssam /* 151178354Ssam * If we receive a beacon miss interrupt when using 152178354Ssam * dynamic turbo, attempt to switch modes before 153178354Ssam * reassociating. 154178354Ssam */ 155178354Ssam if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP)) 156178354Ssam ieee80211_dturbo_switch(vap, 157178354Ssam ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO); 158190391Ssam#endif 159178354Ssam /* 160178354Ssam * Try to reassociate before scanning for a new ap. 161178354Ssam */ 162178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 163178354Ssam } else { 164178354Ssam /* 165178354Ssam * Somebody else is controlling state changes (e.g. 166178354Ssam * a user-mode app) don't do anything that would 167178354Ssam * confuse them; just drop into scan mode so they'll 168178354Ssam * notified of the state change and given control. 169178354Ssam */ 170178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); 171178354Ssam } 172178354Ssam} 173178354Ssam 174178354Ssam/* 175178354Ssam * Handle deauth with reason. We retry only for 176178354Ssam * the cases where we might succeed. Otherwise 177178354Ssam * we downgrade the ap and scan. 178178354Ssam */ 179178354Ssamstatic void 180178354Ssamsta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason) 181178354Ssam{ 182178354Ssam switch (reason) { 183178354Ssam case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */ 184178354Ssam case IEEE80211_STATUS_TIMEOUT: 185178354Ssam case IEEE80211_REASON_ASSOC_EXPIRE: 186178354Ssam case IEEE80211_REASON_NOT_AUTHED: 187178354Ssam case IEEE80211_REASON_NOT_ASSOCED: 188178354Ssam case IEEE80211_REASON_ASSOC_LEAVE: 189178354Ssam case IEEE80211_REASON_ASSOC_NOT_AUTHED: 190178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); 191178354Ssam break; 192178354Ssam default: 193178354Ssam ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason); 194178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 195178354Ssam ieee80211_check_scan_current(vap); 196178354Ssam break; 197178354Ssam } 198178354Ssam} 199178354Ssam 200178354Ssam/* 201178354Ssam * IEEE80211_M_STA vap state machine handler. 202178354Ssam * This routine handles the main states in the 802.11 protocol. 203178354Ssam */ 204178354Ssamstatic int 205178354Ssamsta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 206178354Ssam{ 207178354Ssam struct ieee80211com *ic = vap->iv_ic; 208178354Ssam struct ieee80211_node *ni; 209178354Ssam enum ieee80211_state ostate; 210178354Ssam 211178354Ssam IEEE80211_LOCK_ASSERT(ic); 212178354Ssam 213178354Ssam ostate = vap->iv_state; 214178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 215178354Ssam __func__, ieee80211_state_name[ostate], 216178354Ssam ieee80211_state_name[nstate], arg); 217178354Ssam vap->iv_state = nstate; /* state transition */ 218178354Ssam callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */ 219178354Ssam if (ostate != IEEE80211_S_SCAN) 220178354Ssam ieee80211_cancel_scan(vap); /* background scan */ 221178354Ssam ni = vap->iv_bss; /* NB: no reference held */ 222178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) 223178354Ssam callout_stop(&vap->iv_swbmiss); 224178354Ssam switch (nstate) { 225178354Ssam case IEEE80211_S_INIT: 226178354Ssam switch (ostate) { 227178354Ssam case IEEE80211_S_SLEEP: 228178354Ssam /* XXX wakeup */ 229178354Ssam case IEEE80211_S_RUN: 230178354Ssam IEEE80211_SEND_MGMT(ni, 231178354Ssam IEEE80211_FC0_SUBTYPE_DISASSOC, 232178354Ssam IEEE80211_REASON_ASSOC_LEAVE); 233178354Ssam ieee80211_sta_leave(ni); 234178354Ssam break; 235178354Ssam case IEEE80211_S_ASSOC: 236178354Ssam IEEE80211_SEND_MGMT(ni, 237178354Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 238178354Ssam IEEE80211_REASON_AUTH_LEAVE); 239178354Ssam break; 240178354Ssam case IEEE80211_S_SCAN: 241178354Ssam ieee80211_cancel_scan(vap); 242178354Ssam break; 243178354Ssam default: 244178354Ssam goto invalid; 245178354Ssam } 246178354Ssam if (ostate != IEEE80211_S_INIT) { 247178354Ssam /* NB: optimize INIT -> INIT case */ 248178354Ssam ieee80211_reset_bss(vap); 249178354Ssam } 250178354Ssam if (vap->iv_auth->ia_detach != NULL) 251178354Ssam vap->iv_auth->ia_detach(vap); 252178354Ssam break; 253178354Ssam case IEEE80211_S_SCAN: 254178354Ssam switch (ostate) { 255178354Ssam case IEEE80211_S_INIT: 256178354Ssam /* 257178354Ssam * Initiate a scan. We can come here as a result 258178354Ssam * of an IEEE80211_IOC_SCAN_REQ too in which case 259178354Ssam * the vap will be marked with IEEE80211_FEXT_SCANREQ 260178354Ssam * and the scan request parameters will be present 261178354Ssam * in iv_scanreq. Otherwise we do the default. 262178354Ssam */ 263178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 264178354Ssam ieee80211_check_scan(vap, 265178354Ssam vap->iv_scanreq_flags, 266178354Ssam vap->iv_scanreq_duration, 267178354Ssam vap->iv_scanreq_mindwell, 268178354Ssam vap->iv_scanreq_maxdwell, 269178354Ssam vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 270178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 271178354Ssam } else 272178354Ssam ieee80211_check_scan_current(vap); 273178354Ssam break; 274178354Ssam case IEEE80211_S_SCAN: 275178354Ssam case IEEE80211_S_AUTH: 276178354Ssam case IEEE80211_S_ASSOC: 277178354Ssam /* 278178354Ssam * These can happen either because of a timeout 279178354Ssam * on an assoc/auth response or because of a 280178354Ssam * change in state that requires a reset. For 281178354Ssam * the former we're called with a non-zero arg 282178354Ssam * that is the cause for the failure; pass this 283178354Ssam * to the scan code so it can update state. 284178354Ssam * Otherwise trigger a new scan unless we're in 285178354Ssam * manual roaming mode in which case an application 286178354Ssam * must issue an explicit scan request. 287178354Ssam */ 288178354Ssam if (arg != 0) 289178354Ssam ieee80211_scan_assoc_fail(vap, 290178354Ssam vap->iv_bss->ni_macaddr, arg); 291178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 292178354Ssam ieee80211_check_scan_current(vap); 293178354Ssam break; 294178354Ssam case IEEE80211_S_RUN: /* beacon miss */ 295178354Ssam /* 296178354Ssam * Beacon miss. Notify user space and if not 297178354Ssam * under control of a user application (roaming 298178354Ssam * manual) kick off a scan to re-connect. 299178354Ssam */ 300178354Ssam ieee80211_sta_leave(ni); 301178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 302178354Ssam ieee80211_check_scan_current(vap); 303178354Ssam break; 304178354Ssam default: 305178354Ssam goto invalid; 306178354Ssam } 307178354Ssam break; 308178354Ssam case IEEE80211_S_AUTH: 309178354Ssam switch (ostate) { 310178354Ssam case IEEE80211_S_INIT: 311178354Ssam case IEEE80211_S_SCAN: 312178354Ssam IEEE80211_SEND_MGMT(ni, 313178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 314178354Ssam break; 315178354Ssam case IEEE80211_S_AUTH: 316178354Ssam case IEEE80211_S_ASSOC: 317178354Ssam switch (arg & 0xff) { 318178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 319178354Ssam /* ??? */ 320178354Ssam IEEE80211_SEND_MGMT(ni, 321178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 322178354Ssam break; 323178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 324178354Ssam sta_authretry(vap, ni, arg>>8); 325178354Ssam break; 326178354Ssam } 327178354Ssam break; 328178354Ssam case IEEE80211_S_RUN: 329178354Ssam switch (arg & 0xff) { 330178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 331178354Ssam IEEE80211_SEND_MGMT(ni, 332178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 333178354Ssam vap->iv_state = ostate; /* stay RUN */ 334178354Ssam break; 335178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 336178354Ssam ieee80211_sta_leave(ni); 337178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 338178354Ssam /* try to reauth */ 339178354Ssam IEEE80211_SEND_MGMT(ni, 340178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 341178354Ssam } 342178354Ssam break; 343178354Ssam } 344178354Ssam break; 345178354Ssam default: 346178354Ssam goto invalid; 347178354Ssam } 348178354Ssam break; 349178354Ssam case IEEE80211_S_ASSOC: 350178354Ssam switch (ostate) { 351178354Ssam case IEEE80211_S_AUTH: 352178354Ssam case IEEE80211_S_ASSOC: 353178354Ssam IEEE80211_SEND_MGMT(ni, 354178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 355178354Ssam break; 356178354Ssam case IEEE80211_S_SLEEP: /* cannot happen */ 357178354Ssam case IEEE80211_S_RUN: 358178354Ssam ieee80211_sta_leave(ni); 359178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 360178354Ssam IEEE80211_SEND_MGMT(ni, arg ? 361178354Ssam IEEE80211_FC0_SUBTYPE_REASSOC_REQ : 362178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 363178354Ssam } 364178354Ssam break; 365178354Ssam default: 366178354Ssam goto invalid; 367178354Ssam } 368178354Ssam break; 369178354Ssam case IEEE80211_S_RUN: 370178354Ssam if (vap->iv_flags & IEEE80211_F_WPA) { 371178354Ssam /* XXX validate prerequisites */ 372178354Ssam } 373178354Ssam switch (ostate) { 374178354Ssam case IEEE80211_S_RUN: 375193439Ssam case IEEE80211_S_CSA: 376178354Ssam break; 377178354Ssam case IEEE80211_S_AUTH: /* when join is done in fw */ 378178354Ssam case IEEE80211_S_ASSOC: 379178354Ssam#ifdef IEEE80211_DEBUG 380178354Ssam if (ieee80211_msg_debug(vap)) { 381178354Ssam ieee80211_note(vap, "%s with %s ssid ", 382178354Ssam (vap->iv_opmode == IEEE80211_M_STA ? 383178354Ssam "associated" : "synchronized"), 384178354Ssam ether_sprintf(ni->ni_bssid)); 385178354Ssam ieee80211_print_essid(vap->iv_bss->ni_essid, 386178354Ssam ni->ni_esslen); 387178354Ssam /* XXX MCS/HT */ 388178354Ssam printf(" channel %d start %uMb\n", 389178354Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 390178354Ssam IEEE80211_RATE2MBS(ni->ni_txrate)); 391178354Ssam } 392178354Ssam#endif 393178354Ssam ieee80211_scan_assoc_success(vap, ni->ni_macaddr); 394178354Ssam ieee80211_notify_node_join(ni, 395178354Ssam arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 396178354Ssam break; 397178354Ssam case IEEE80211_S_SLEEP: 398178354Ssam ieee80211_sta_pwrsave(vap, 0); 399178354Ssam break; 400178354Ssam default: 401178354Ssam goto invalid; 402178354Ssam } 403178354Ssam ieee80211_sync_curchan(ic); 404178354Ssam if (ostate != IEEE80211_S_RUN && 405178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) { 406178354Ssam /* 407178354Ssam * Start s/w beacon miss timer for devices w/o 408178354Ssam * hardware support. We fudge a bit here since 409178354Ssam * we're doing this in software. 410178354Ssam */ 411178354Ssam vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS( 412178354Ssam 2 * vap->iv_bmissthreshold * ni->ni_intval); 413178354Ssam vap->iv_swbmiss_count = 0; 414178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 415178354Ssam ieee80211_swbmiss, vap); 416178354Ssam } 417178354Ssam /* 418178354Ssam * When 802.1x is not in use mark the port authorized 419178354Ssam * at this point so traffic can flow. 420178354Ssam */ 421178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 422178354Ssam ieee80211_node_authorize(ni); 423184345Ssam /* 424184345Ssam * Fake association when joining an existing bss. 425184345Ssam */ 426184345Ssam if (ic->ic_newassoc != NULL) 427184345Ssam ic->ic_newassoc(vap->iv_bss, ostate != IEEE80211_S_RUN); 428178354Ssam break; 429193439Ssam case IEEE80211_S_CSA: 430193439Ssam if (ostate != IEEE80211_S_RUN) 431193439Ssam goto invalid; 432193439Ssam break; 433178354Ssam case IEEE80211_S_SLEEP: 434178354Ssam ieee80211_sta_pwrsave(vap, 0); 435178354Ssam break; 436178354Ssam default: 437178354Ssam invalid: 438184268Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 439184268Ssam "%s: unexpected state transition %s -> %s\n", __func__, 440178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 441178354Ssam break; 442178354Ssam } 443178354Ssam return 0; 444178354Ssam} 445178354Ssam 446178354Ssam/* 447178354Ssam * Return non-zero if the frame is an echo of a multicast 448178354Ssam * frame sent by ourself. The dir is known to be DSTODS. 449178354Ssam */ 450178354Ssamstatic __inline int 451178354Ssamisdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 452178354Ssam{ 453178354Ssam#define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh) 454178354Ssam#define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh) 455178354Ssam const uint8_t *sa; 456178354Ssam 457178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 458178354Ssam 459178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) 460178354Ssam return 0; 461178354Ssam sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4; 462178354Ssam return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr); 463178354Ssam#undef WH4 464178354Ssam#undef QWH4 465178354Ssam} 466178354Ssam 467178354Ssam/* 468178354Ssam * Return non-zero if the frame is an echo of a multicast 469178354Ssam * frame sent by ourself. The dir is known to be FROMDS. 470178354Ssam */ 471178354Ssamstatic __inline int 472178354Ssamisfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 473178354Ssam{ 474178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 475178354Ssam 476178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) 477178354Ssam return 0; 478178354Ssam return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 479178354Ssam} 480178354Ssam 481178354Ssam/* 482178354Ssam * Decide if a received management frame should be 483178354Ssam * printed when debugging is enabled. This filters some 484178354Ssam * of the less interesting frames that come frequently 485178354Ssam * (e.g. beacons). 486178354Ssam */ 487178354Ssamstatic __inline int 488178354Ssamdoprint(struct ieee80211vap *vap, int subtype) 489178354Ssam{ 490178354Ssam switch (subtype) { 491178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: 492178354Ssam return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); 493178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 494178354Ssam return 0; 495178354Ssam } 496178354Ssam return 1; 497178354Ssam} 498178354Ssam 499178354Ssam/* 500178354Ssam * Process a received frame. The node associated with the sender 501178354Ssam * should be supplied. If nothing was found in the node table then 502178354Ssam * the caller is assumed to supply a reference to iv_bss instead. 503178354Ssam * The RSSI and a timestamp are also supplied. The RSSI data is used 504178354Ssam * during AP scanning to select a AP to associate with; it can have 505178354Ssam * any units so long as values have consistent units and higher values 506178354Ssam * mean ``better signal''. The receive timestamp is currently not used 507178354Ssam * by the 802.11 layer. 508178354Ssam */ 509178354Ssamstatic int 510192468Ssamsta_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 511178354Ssam{ 512178354Ssam#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) 513178354Ssam#define HAS_SEQ(type) ((type & 0x4) == 0) 514178354Ssam struct ieee80211vap *vap = ni->ni_vap; 515178354Ssam struct ieee80211com *ic = ni->ni_ic; 516178354Ssam struct ifnet *ifp = vap->iv_ifp; 517178354Ssam struct ieee80211_frame *wh; 518178354Ssam struct ieee80211_key *key; 519178354Ssam struct ether_header *eh; 520178354Ssam int hdrspace, need_tap; 521178354Ssam uint8_t dir, type, subtype, qos; 522178354Ssam uint8_t *bssid; 523178354Ssam uint16_t rxseq; 524178354Ssam 525183247Ssam if (m->m_flags & M_AMPDU_MPDU) { 526178354Ssam /* 527178354Ssam * Fastpath for A-MPDU reorder q resubmission. Frames 528183247Ssam * w/ M_AMPDU_MPDU marked have already passed through 529183247Ssam * here but were received out of order and been held on 530183247Ssam * the reorder queue. When resubmitted they are marked 531183247Ssam * with the M_AMPDU_MPDU flag and we can bypass most of 532183247Ssam * the normal processing. 533178354Ssam */ 534178354Ssam wh = mtod(m, struct ieee80211_frame *); 535178354Ssam type = IEEE80211_FC0_TYPE_DATA; 536178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 537178354Ssam subtype = IEEE80211_FC0_SUBTYPE_QOS; 538178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ 539178354Ssam goto resubmit_ampdu; 540178354Ssam } 541178354Ssam 542178354Ssam KASSERT(ni != NULL, ("null node")); 543178354Ssam ni->ni_inact = ni->ni_inact_reload; 544178354Ssam 545178354Ssam need_tap = 1; /* mbuf need to be tapped. */ 546178354Ssam type = -1; /* undefined */ 547178354Ssam 548178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 549178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 550178354Ssam ni->ni_macaddr, NULL, 551178354Ssam "too short (1): len %u", m->m_pkthdr.len); 552178354Ssam vap->iv_stats.is_rx_tooshort++; 553178354Ssam goto out; 554178354Ssam } 555178354Ssam /* 556178354Ssam * Bit of a cheat here, we use a pointer for a 3-address 557178354Ssam * frame format but don't reference fields past outside 558178354Ssam * ieee80211_frame_min w/o first validating the data is 559178354Ssam * present. 560178354Ssam */ 561178354Ssam wh = mtod(m, struct ieee80211_frame *); 562178354Ssam 563178354Ssam if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 564178354Ssam IEEE80211_FC0_VERSION_0) { 565178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 566191547Ssam ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", 567191547Ssam wh->i_fc[0], wh->i_fc[1]); 568178354Ssam vap->iv_stats.is_rx_badversion++; 569178354Ssam goto err; 570178354Ssam } 571178354Ssam 572178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 573178354Ssam type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 574178354Ssam subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 575178354Ssam if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 576178354Ssam bssid = wh->i_addr2; 577178354Ssam if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { 578178354Ssam /* not interested in */ 579178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 580178354Ssam bssid, NULL, "%s", "not to bss"); 581178354Ssam vap->iv_stats.is_rx_wrongbss++; 582178354Ssam goto out; 583178354Ssam } 584178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 585192468Ssam ni->ni_noise = nf; 586178354Ssam if (HAS_SEQ(type)) { 587178354Ssam uint8_t tid = ieee80211_gettid(wh); 588178354Ssam if (IEEE80211_QOS_HAS_SEQ(wh) && 589178354Ssam TID_TO_WME_AC(tid) >= WME_AC_VI) 590178354Ssam ic->ic_wme.wme_hipri_traffic++; 591178354Ssam rxseq = le16toh(*(uint16_t *)wh->i_seq); 592178354Ssam if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 && 593178354Ssam (wh->i_fc[1] & IEEE80211_FC1_RETRY) && 594178354Ssam SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) { 595178354Ssam /* duplicate, discard */ 596178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 597178354Ssam bssid, "duplicate", 598178354Ssam "seqno <%u,%u> fragno <%u,%u> tid %u", 599178354Ssam rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 600178354Ssam ni->ni_rxseqs[tid] >> 601178354Ssam IEEE80211_SEQ_SEQ_SHIFT, 602178354Ssam rxseq & IEEE80211_SEQ_FRAG_MASK, 603178354Ssam ni->ni_rxseqs[tid] & 604178354Ssam IEEE80211_SEQ_FRAG_MASK, 605178354Ssam tid); 606178354Ssam vap->iv_stats.is_rx_dup++; 607178354Ssam IEEE80211_NODE_STAT(ni, rx_dup); 608178354Ssam goto out; 609178354Ssam } 610178354Ssam ni->ni_rxseqs[tid] = rxseq; 611178354Ssam } 612178354Ssam } 613178354Ssam 614178354Ssam switch (type) { 615178354Ssam case IEEE80211_FC0_TYPE_DATA: 616178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 617178354Ssam if (m->m_len < hdrspace && 618178354Ssam (m = m_pullup(m, hdrspace)) == NULL) { 619178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 620178354Ssam ni->ni_macaddr, NULL, 621178354Ssam "data too short: expecting %u", hdrspace); 622178354Ssam vap->iv_stats.is_rx_tooshort++; 623178354Ssam goto out; /* XXX */ 624178354Ssam } 625178354Ssam /* 626183247Ssam * Handle A-MPDU re-ordering. If the frame is to be 627183247Ssam * processed directly then ieee80211_ampdu_reorder 628178354Ssam * will return 0; otherwise it has consumed the mbuf 629178354Ssam * and we should do nothing more with it. 630178354Ssam */ 631183247Ssam if ((m->m_flags & M_AMPDU) && 632178354Ssam (dir == IEEE80211_FC1_DIR_FROMDS || 633178354Ssam dir == IEEE80211_FC1_DIR_DSTODS) && 634178354Ssam ieee80211_ampdu_reorder(ni, m) != 0) { 635178354Ssam m = NULL; 636178354Ssam goto out; 637178354Ssam } 638178354Ssam resubmit_ampdu: 639178354Ssam if (dir == IEEE80211_FC1_DIR_FROMDS) { 640178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 641178354Ssam isfromds_mcastecho(vap, wh)) { 642178354Ssam /* 643178354Ssam * In IEEE802.11 network, multicast 644178354Ssam * packets sent from "me" are broadcast 645178354Ssam * from the AP; silently discard for 646178354Ssam * SIMPLEX interface. 647178354Ssam */ 648178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 649178354Ssam wh, "data", "%s", "multicast echo"); 650178354Ssam vap->iv_stats.is_rx_mcastecho++; 651178354Ssam goto out; 652178354Ssam } 653178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) && 654178354Ssam IEEE80211_IS_MULTICAST(wh->i_addr1)) { 655178354Ssam /* 656178354Ssam * DWDS sta's must drop 3-address mcast frames 657178354Ssam * as they will be sent separately as a 4-addr 658178354Ssam * frame. Accepting the 3-addr frame will 659178354Ssam * confuse the bridge into thinking the sending 660178354Ssam * sta is located at the end of WDS link. 661178354Ssam */ 662178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 663178354Ssam "3-address data", "%s", "DWDS enabled"); 664178354Ssam vap->iv_stats.is_rx_mcastecho++; 665178354Ssam goto out; 666178354Ssam } 667178354Ssam } else if (dir == IEEE80211_FC1_DIR_DSTODS) { 668178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) { 669178354Ssam IEEE80211_DISCARD(vap, 670178354Ssam IEEE80211_MSG_INPUT, wh, "4-address data", 671178354Ssam "%s", "DWDS not enabled"); 672178354Ssam vap->iv_stats.is_rx_wrongdir++; 673178354Ssam goto out; 674178354Ssam } 675178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 676178354Ssam isdstods_mcastecho(vap, wh)) { 677178354Ssam /* 678178354Ssam * In IEEE802.11 network, multicast 679178354Ssam * packets sent from "me" are broadcast 680178354Ssam * from the AP; silently discard for 681178354Ssam * SIMPLEX interface. 682178354Ssam */ 683178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 684178354Ssam "4-address data", "%s", "multicast echo"); 685178354Ssam vap->iv_stats.is_rx_mcastecho++; 686178354Ssam goto out; 687178354Ssam } 688178354Ssam } else { 689178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 690178354Ssam "data", "incorrect dir 0x%x", dir); 691178354Ssam vap->iv_stats.is_rx_wrongdir++; 692178354Ssam goto out; 693178354Ssam } 694178354Ssam 695178354Ssam /* 696178354Ssam * Handle privacy requirements. Note that we 697178354Ssam * must not be preempted from here until after 698178354Ssam * we (potentially) call ieee80211_crypto_demic; 699178354Ssam * otherwise we may violate assumptions in the 700178354Ssam * crypto cipher modules used to do delayed update 701178354Ssam * of replay sequence numbers. 702178354Ssam */ 703178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 704178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 705178354Ssam /* 706178354Ssam * Discard encrypted frames when privacy is off. 707178354Ssam */ 708178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 709178354Ssam wh, "WEP", "%s", "PRIVACY off"); 710178354Ssam vap->iv_stats.is_rx_noprivacy++; 711178354Ssam IEEE80211_NODE_STAT(ni, rx_noprivacy); 712178354Ssam goto out; 713178354Ssam } 714178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 715178354Ssam if (key == NULL) { 716178354Ssam /* NB: stats+msgs handled in crypto_decap */ 717178354Ssam IEEE80211_NODE_STAT(ni, rx_wepfail); 718178354Ssam goto out; 719178354Ssam } 720178354Ssam wh = mtod(m, struct ieee80211_frame *); 721178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 722178354Ssam } else { 723178354Ssam /* XXX M_WEP and IEEE80211_F_PRIVACY */ 724178354Ssam key = NULL; 725178354Ssam } 726178354Ssam 727178354Ssam /* 728178354Ssam * Save QoS bits for use below--before we strip the header. 729178354Ssam */ 730178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 731178354Ssam qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 732178354Ssam ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 733178354Ssam ((struct ieee80211_qosframe *)wh)->i_qos[0]; 734178354Ssam } else 735178354Ssam qos = 0; 736178354Ssam 737178354Ssam /* 738178354Ssam * Next up, any fragmentation. 739178354Ssam */ 740178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 741178354Ssam m = ieee80211_defrag(ni, m, hdrspace); 742178354Ssam if (m == NULL) { 743178354Ssam /* Fragment dropped or frame not complete yet */ 744178354Ssam goto out; 745178354Ssam } 746178354Ssam } 747178354Ssam wh = NULL; /* no longer valid, catch any uses */ 748178354Ssam 749178354Ssam /* 750178354Ssam * Next strip any MSDU crypto bits. 751178354Ssam */ 752178354Ssam if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { 753178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 754178354Ssam ni->ni_macaddr, "data", "%s", "demic error"); 755178354Ssam vap->iv_stats.is_rx_demicfail++; 756178354Ssam IEEE80211_NODE_STAT(ni, rx_demicfail); 757178354Ssam goto out; 758178354Ssam } 759178354Ssam 760178354Ssam /* copy to listener after decrypt */ 761192468Ssam if (ieee80211_radiotap_active_vap(vap)) 762192468Ssam ieee80211_radiotap_tx(vap, m); 763178354Ssam need_tap = 0; 764178354Ssam 765178354Ssam /* 766178354Ssam * Finally, strip the 802.11 header. 767178354Ssam */ 768178354Ssam m = ieee80211_decap(vap, m, hdrspace); 769178354Ssam if (m == NULL) { 770178354Ssam /* XXX mask bit to check for both */ 771178354Ssam /* don't count Null data frames as errors */ 772178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 773178354Ssam subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 774178354Ssam goto out; 775178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 776178354Ssam ni->ni_macaddr, "data", "%s", "decap error"); 777178354Ssam vap->iv_stats.is_rx_decap++; 778178354Ssam IEEE80211_NODE_STAT(ni, rx_decap); 779178354Ssam goto err; 780178354Ssam } 781178354Ssam eh = mtod(m, struct ether_header *); 782178354Ssam if (!ieee80211_node_is_authorized(ni)) { 783178354Ssam /* 784178354Ssam * Deny any non-PAE frames received prior to 785178354Ssam * authorization. For open/shared-key 786178354Ssam * authentication the port is mark authorized 787178354Ssam * after authentication completes. For 802.1x 788178354Ssam * the port is not marked authorized by the 789178354Ssam * authenticator until the handshake has completed. 790178354Ssam */ 791178354Ssam if (eh->ether_type != htons(ETHERTYPE_PAE)) { 792178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 793178354Ssam eh->ether_shost, "data", 794178354Ssam "unauthorized port: ether type 0x%x len %u", 795178354Ssam eh->ether_type, m->m_pkthdr.len); 796178354Ssam vap->iv_stats.is_rx_unauth++; 797178354Ssam IEEE80211_NODE_STAT(ni, rx_unauth); 798178354Ssam goto err; 799178354Ssam } 800178354Ssam } else { 801178354Ssam /* 802178354Ssam * When denying unencrypted frames, discard 803178354Ssam * any non-PAE frames received without encryption. 804178354Ssam */ 805178354Ssam if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && 806178354Ssam (key == NULL && (m->m_flags & M_WEP) == 0) && 807178354Ssam eh->ether_type != htons(ETHERTYPE_PAE)) { 808178354Ssam /* 809178354Ssam * Drop unencrypted frames. 810178354Ssam */ 811178354Ssam vap->iv_stats.is_rx_unencrypted++; 812178354Ssam IEEE80211_NODE_STAT(ni, rx_unencrypted); 813178354Ssam goto out; 814178354Ssam } 815178354Ssam } 816178354Ssam /* XXX require HT? */ 817178354Ssam if (qos & IEEE80211_QOS_AMSDU) { 818178354Ssam m = ieee80211_decap_amsdu(ni, m); 819178354Ssam if (m == NULL) 820178354Ssam return IEEE80211_FC0_TYPE_DATA; 821190391Ssam } else { 822190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 823190391Ssam m = ieee80211_decap_fastframe(vap, ni, m); 824190391Ssam if (m == NULL) 825178354Ssam return IEEE80211_FC0_TYPE_DATA; 826190391Ssam#endif 827178354Ssam } 828178354Ssam ieee80211_deliver_data(vap, ni, m); 829178354Ssam return IEEE80211_FC0_TYPE_DATA; 830178354Ssam 831178354Ssam case IEEE80211_FC0_TYPE_MGT: 832178354Ssam vap->iv_stats.is_rx_mgmt++; 833178354Ssam IEEE80211_NODE_STAT(ni, rx_mgmt); 834178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 835178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 836178354Ssam wh, "data", "incorrect dir 0x%x", dir); 837178354Ssam vap->iv_stats.is_rx_wrongdir++; 838178354Ssam goto err; 839178354Ssam } 840178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 841178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 842178354Ssam ni->ni_macaddr, "mgt", "too short: len %u", 843178354Ssam m->m_pkthdr.len); 844178354Ssam vap->iv_stats.is_rx_tooshort++; 845178354Ssam goto out; 846178354Ssam } 847178354Ssam#ifdef IEEE80211_DEBUG 848178354Ssam if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || 849178354Ssam ieee80211_msg_dumppkts(vap)) { 850178354Ssam if_printf(ifp, "received %s from %s rssi %d\n", 851178354Ssam ieee80211_mgt_subtype_name[subtype >> 852178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 853178354Ssam ether_sprintf(wh->i_addr2), rssi); 854178354Ssam } 855178354Ssam#endif 856178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 857178354Ssam if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { 858178354Ssam /* 859178354Ssam * Only shared key auth frames with a challenge 860178354Ssam * should be encrypted, discard all others. 861178354Ssam */ 862178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 863178354Ssam wh, ieee80211_mgt_subtype_name[subtype >> 864178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 865178354Ssam "%s", "WEP set but not permitted"); 866178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 867178354Ssam goto out; 868178354Ssam } 869178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 870178354Ssam /* 871178354Ssam * Discard encrypted frames when privacy is off. 872178354Ssam */ 873178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 874178354Ssam wh, "mgt", "%s", "WEP set but PRIVACY off"); 875178354Ssam vap->iv_stats.is_rx_noprivacy++; 876178354Ssam goto out; 877178354Ssam } 878178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 879178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 880178354Ssam if (key == NULL) { 881178354Ssam /* NB: stats+msgs handled in crypto_decap */ 882178354Ssam goto out; 883178354Ssam } 884178354Ssam wh = mtod(m, struct ieee80211_frame *); 885178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 886178354Ssam } 887192468Ssam vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 888191534Ssam goto out; 889178354Ssam 890178354Ssam case IEEE80211_FC0_TYPE_CTL: 891178354Ssam vap->iv_stats.is_rx_ctl++; 892178354Ssam IEEE80211_NODE_STAT(ni, rx_ctrl); 893191546Ssam vap->iv_recv_ctl(ni, m, subtype); 894178354Ssam goto out; 895191549Ssam 896178354Ssam default: 897178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 898178354Ssam wh, NULL, "bad frame type 0x%x", type); 899178354Ssam /* should not come here */ 900178354Ssam break; 901178354Ssam } 902178354Ssamerr: 903178354Ssam ifp->if_ierrors++; 904178354Ssamout: 905178354Ssam if (m != NULL) { 906192765Ssam if (need_tap && ieee80211_radiotap_active_vap(vap)) 907192468Ssam ieee80211_radiotap_rx(vap, m); 908178354Ssam m_freem(m); 909178354Ssam } 910178354Ssam return type; 911178354Ssam#undef SEQ_LEQ 912178354Ssam} 913178354Ssam 914178354Ssamstatic void 915178354Ssamsta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, 916192468Ssam int rssi, int nf, uint16_t seq, uint16_t status) 917178354Ssam{ 918178354Ssam struct ieee80211vap *vap = ni->ni_vap; 919178354Ssam 920178354Ssam if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { 921178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 922178354Ssam ni->ni_macaddr, "open auth", 923178354Ssam "bad sta auth mode %u", ni->ni_authmode); 924178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX */ 925178354Ssam return; 926178354Ssam } 927178354Ssam if (vap->iv_state != IEEE80211_S_AUTH || 928178354Ssam seq != IEEE80211_AUTH_OPEN_RESPONSE) { 929178354Ssam vap->iv_stats.is_rx_bad_auth++; 930178354Ssam return; 931178354Ssam } 932178354Ssam if (status != 0) { 933178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, 934178354Ssam ni, "open auth failed (reason %d)", status); 935178354Ssam vap->iv_stats.is_rx_auth_fail++; 936178354Ssam vap->iv_stats.is_rx_authfail_code = status; 937178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 938178354Ssam IEEE80211_SCAN_FAIL_STATUS); 939178354Ssam } else 940178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 941178354Ssam} 942178354Ssam 943178354Ssamstatic void 944178354Ssamsta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, 945192468Ssam uint8_t *frm, uint8_t *efrm, int rssi, int nf, 946178354Ssam uint16_t seq, uint16_t status) 947178354Ssam{ 948178354Ssam struct ieee80211vap *vap = ni->ni_vap; 949178354Ssam uint8_t *challenge; 950178354Ssam int estatus; 951178354Ssam 952178354Ssam /* 953178354Ssam * NB: this can happen as we allow pre-shared key 954178354Ssam * authentication to be enabled w/o wep being turned 955178354Ssam * on so that configuration of these can be done 956178354Ssam * in any order. It may be better to enforce the 957178354Ssam * ordering in which case this check would just be 958178354Ssam * for sanity/consistency. 959178354Ssam */ 960178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 961178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 962178354Ssam ni->ni_macaddr, "shared key auth", 963178354Ssam "%s", " PRIVACY is disabled"); 964178354Ssam estatus = IEEE80211_STATUS_ALG; 965178354Ssam goto bad; 966178354Ssam } 967178354Ssam /* 968178354Ssam * Pre-shared key authentication is evil; accept 969178354Ssam * it only if explicitly configured (it is supported 970178354Ssam * mainly for compatibility with clients like OS X). 971178354Ssam */ 972178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_AUTO && 973178354Ssam ni->ni_authmode != IEEE80211_AUTH_SHARED) { 974178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 975178354Ssam ni->ni_macaddr, "shared key auth", 976178354Ssam "bad sta auth mode %u", ni->ni_authmode); 977178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */ 978178354Ssam estatus = IEEE80211_STATUS_ALG; 979178354Ssam goto bad; 980178354Ssam } 981178354Ssam 982178354Ssam challenge = NULL; 983178354Ssam if (frm + 1 < efrm) { 984178354Ssam if ((frm[1] + 2) > (efrm - frm)) { 985178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 986178354Ssam ni->ni_macaddr, "shared key auth", 987178354Ssam "ie %d/%d too long", 988178354Ssam frm[0], (frm[1] + 2) - (efrm - frm)); 989178354Ssam vap->iv_stats.is_rx_bad_auth++; 990178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 991178354Ssam goto bad; 992178354Ssam } 993178354Ssam if (*frm == IEEE80211_ELEMID_CHALLENGE) 994178354Ssam challenge = frm; 995178354Ssam frm += frm[1] + 2; 996178354Ssam } 997178354Ssam switch (seq) { 998178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 999178354Ssam case IEEE80211_AUTH_SHARED_RESPONSE: 1000178354Ssam if (challenge == NULL) { 1001178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1002178354Ssam ni->ni_macaddr, "shared key auth", 1003178354Ssam "%s", "no challenge"); 1004178354Ssam vap->iv_stats.is_rx_bad_auth++; 1005178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1006178354Ssam goto bad; 1007178354Ssam } 1008178354Ssam if (challenge[1] != IEEE80211_CHALLENGE_LEN) { 1009178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1010178354Ssam ni->ni_macaddr, "shared key auth", 1011178354Ssam "bad challenge len %d", challenge[1]); 1012178354Ssam vap->iv_stats.is_rx_bad_auth++; 1013178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1014178354Ssam goto bad; 1015178354Ssam } 1016178354Ssam default: 1017178354Ssam break; 1018178354Ssam } 1019178354Ssam if (vap->iv_state != IEEE80211_S_AUTH) 1020178354Ssam return; 1021178354Ssam switch (seq) { 1022178354Ssam case IEEE80211_AUTH_SHARED_PASS: 1023178354Ssam if (ni->ni_challenge != NULL) { 1024186302Ssam free(ni->ni_challenge, M_80211_NODE); 1025178354Ssam ni->ni_challenge = NULL; 1026178354Ssam } 1027178354Ssam if (status != 0) { 1028178354Ssam IEEE80211_NOTE_FRAME(vap, 1029178354Ssam IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh, 1030178354Ssam "shared key auth failed (reason %d)", status); 1031178354Ssam vap->iv_stats.is_rx_auth_fail++; 1032178354Ssam vap->iv_stats.is_rx_authfail_code = status; 1033178354Ssam return; 1034178354Ssam } 1035178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1036178354Ssam break; 1037178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1038178354Ssam if (!ieee80211_alloc_challenge(ni)) 1039178354Ssam return; 1040178354Ssam /* XXX could optimize by passing recvd challenge */ 1041178354Ssam memcpy(ni->ni_challenge, &challenge[2], challenge[1]); 1042178354Ssam IEEE80211_SEND_MGMT(ni, 1043178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); 1044178354Ssam break; 1045178354Ssam default: 1046178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH, 1047178354Ssam wh, "shared key auth", "bad seq %d", seq); 1048178354Ssam vap->iv_stats.is_rx_bad_auth++; 1049178354Ssam return; 1050178354Ssam } 1051178354Ssam return; 1052178354Ssambad: 1053178354Ssam /* 1054178354Ssam * Kick the state machine. This short-circuits 1055178354Ssam * using the mgt frame timeout to trigger the 1056178354Ssam * state transition. 1057178354Ssam */ 1058178354Ssam if (vap->iv_state == IEEE80211_S_AUTH) 1059178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1060178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1061178354Ssam} 1062178354Ssam 1063178354Ssamstatic int 1064178354Ssamieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm, 1065178354Ssam const struct ieee80211_frame *wh) 1066178354Ssam{ 1067178354Ssam#define MS(_v, _f) (((_v) & _f) >> _f##_S) 1068178354Ssam struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme; 1069178354Ssam u_int len = frm[1], qosinfo; 1070178354Ssam int i; 1071178354Ssam 1072178354Ssam if (len < sizeof(struct ieee80211_wme_param)-2) { 1073178354Ssam IEEE80211_DISCARD_IE(vap, 1074178354Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, 1075178354Ssam wh, "WME", "too short, len %u", len); 1076178354Ssam return -1; 1077178354Ssam } 1078178354Ssam qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)]; 1079178354Ssam qosinfo &= WME_QOSINFO_COUNT; 1080178354Ssam /* XXX do proper check for wraparound */ 1081178354Ssam if (qosinfo == wme->wme_wmeChanParams.cap_info) 1082178354Ssam return 0; 1083178354Ssam frm += __offsetof(struct ieee80211_wme_param, params_acParams); 1084178354Ssam for (i = 0; i < WME_NUM_AC; i++) { 1085178354Ssam struct wmeParams *wmep = 1086178354Ssam &wme->wme_wmeChanParams.cap_wmeParams[i]; 1087178354Ssam /* NB: ACI not used */ 1088178354Ssam wmep->wmep_acm = MS(frm[0], WME_PARAM_ACM); 1089178354Ssam wmep->wmep_aifsn = MS(frm[0], WME_PARAM_AIFSN); 1090178354Ssam wmep->wmep_logcwmin = MS(frm[1], WME_PARAM_LOGCWMIN); 1091178354Ssam wmep->wmep_logcwmax = MS(frm[1], WME_PARAM_LOGCWMAX); 1092178354Ssam wmep->wmep_txopLimit = LE_READ_2(frm+2); 1093178354Ssam frm += 4; 1094178354Ssam } 1095178354Ssam wme->wme_wmeChanParams.cap_info = qosinfo; 1096178354Ssam return 1; 1097178354Ssam#undef MS 1098178354Ssam} 1099178354Ssam 1100178354Ssam/* 1101193439Ssam * Process 11h Channel Switch Announcement (CSA) ie. If this 1102193439Ssam * is the first CSA then initiate the switch. Otherwise we 1103193439Ssam * track state and trigger completion and/or cancel of the switch. 1104193439Ssam * XXX should be public for IBSS use 1105193439Ssam */ 1106193439Ssamstatic void 1107193439Ssamieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm, 1108193439Ssam const struct ieee80211_frame *wh) 1109193439Ssam{ 1110193439Ssam struct ieee80211com *ic = vap->iv_ic; 1111193439Ssam const struct ieee80211_csa_ie *csa = 1112193439Ssam (const struct ieee80211_csa_ie *) frm; 1113193439Ssam 1114193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 1115193439Ssam ("state %s", ieee80211_state_name[vap->iv_state])); 1116193439Ssam 1117193439Ssam if (csa->csa_mode > 1) { 1118193439Ssam IEEE80211_DISCARD_IE(vap, 1119193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1120193439Ssam wh, "CSA", "invalid mode %u", csa->csa_mode); 1121193439Ssam return; 1122193439Ssam } 1123193439Ssam IEEE80211_LOCK(ic); 1124193439Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 1125193439Ssam /* 1126193439Ssam * Convert the channel number to a channel reference. We 1127193439Ssam * try first to preserve turbo attribute of the current 1128193439Ssam * channel then fallback. Note this will not work if the 1129193439Ssam * CSA specifies a channel that requires a band switch (e.g. 1130193439Ssam * 11a => 11g). This is intentional as 11h is defined only 1131193439Ssam * for 5GHz/11a and because the switch does not involve a 1132193439Ssam * reassociation, protocol state (capabilities, negotated 1133193439Ssam * rates, etc) may/will be wrong. 1134193439Ssam */ 1135193439Ssam struct ieee80211_channel *c = 1136193439Ssam ieee80211_find_channel_byieee(ic, csa->csa_newchan, 1137193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO)); 1138193439Ssam if (c == NULL) { 1139193439Ssam c = ieee80211_find_channel_byieee(ic, 1140193439Ssam csa->csa_newchan, 1141193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL)); 1142193439Ssam if (c == NULL) { 1143193439Ssam IEEE80211_DISCARD_IE(vap, 1144193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1145193439Ssam wh, "CSA", "invalid channel %u", 1146193439Ssam csa->csa_newchan); 1147193439Ssam goto done; 1148193439Ssam } 1149193439Ssam } 1150193439Ssam#if IEEE80211_CSA_COUNT_MIN > 0 1151193439Ssam if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) { 1152193439Ssam /* 1153193439Ssam * Require at least IEEE80211_CSA_COUNT_MIN count to 1154193439Ssam * reduce the risk of being redirected by a fabricated 1155193439Ssam * CSA. If a valid CSA is dropped we'll still get a 1156193439Ssam * beacon miss when the AP leaves the channel so we'll 1157193439Ssam * eventually follow to the new channel. 1158193439Ssam * 1159193439Ssam * NOTE: this violates the 11h spec that states that 1160193439Ssam * count may be any value and if 0 then a switch 1161193439Ssam * should happen asap. 1162193439Ssam */ 1163193439Ssam IEEE80211_DISCARD_IE(vap, 1164193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1165193439Ssam wh, "CSA", "count %u too small, must be >= %u", 1166193439Ssam csa->csa_count, IEEE80211_CSA_COUNT_MIN); 1167193439Ssam goto done; 1168193439Ssam } 1169193439Ssam#endif 1170193439Ssam ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count); 1171193439Ssam } else { 1172193439Ssam /* 1173193439Ssam * Validate this ie against the initial CSA. We require 1174193439Ssam * mode and channel not change and the count must be 1175193439Ssam * monotonically decreasing. This may be pointless and 1176193439Ssam * canceling the switch as a result may be too paranoid but 1177193439Ssam * in the worst case if we drop out of CSA because of this 1178193439Ssam * and the AP does move then we'll just end up taking a 1179193439Ssam * beacon miss and scan to find the AP. 1180193439Ssam * 1181193439Ssam * XXX may want <= on count as we also process ProbeResp 1182193439Ssam * frames and those may come in w/ the same count as the 1183193439Ssam * previous beacon; but doing so leaves us open to a stuck 1184193439Ssam * count until we add a dead-man timer 1185193439Ssam */ 1186193439Ssam if (!(csa->csa_count < ic->ic_csa_count && 1187193439Ssam csa->csa_mode == ic->ic_csa_mode && 1188193439Ssam csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) { 1189193439Ssam IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh, 1190193439Ssam "CSA ie mismatch, initial ie <%d,%d,%d>, " 1191193439Ssam "this ie <%d,%d,%d>", ic->ic_csa_mode, 1192193439Ssam ic->ic_csa_newchan, ic->ic_csa_count, 1193193439Ssam csa->csa_mode, csa->csa_newchan, csa->csa_count); 1194193439Ssam ieee80211_csa_cancelswitch(ic); 1195193439Ssam } else { 1196193439Ssam if (csa->csa_count <= 1) 1197193439Ssam ieee80211_csa_completeswitch(ic); 1198193439Ssam else 1199193439Ssam ic->ic_csa_count = csa->csa_count; 1200193439Ssam } 1201193439Ssam } 1202193439Ssamdone: 1203193439Ssam IEEE80211_UNLOCK(ic); 1204193439Ssam} 1205193439Ssam 1206193439Ssam/* 1207178354Ssam * Return non-zero if a background scan may be continued: 1208178354Ssam * o bg scan is active 1209178354Ssam * o no channel switch is pending 1210178354Ssam * o there has not been any traffic recently 1211178354Ssam * 1212178354Ssam * Note we do not check if there is an administrative enable; 1213178354Ssam * this is only done to start the scan. We assume that any 1214178354Ssam * change in state will be accompanied by a request to cancel 1215178354Ssam * active scans which will otherwise cause this test to fail. 1216178354Ssam */ 1217178354Ssamstatic __inline int 1218178354Ssamcontbgscan(struct ieee80211vap *vap) 1219178354Ssam{ 1220178354Ssam struct ieee80211com *ic = vap->iv_ic; 1221178354Ssam 1222178354Ssam return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) && 1223178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1224178354Ssam vap->iv_state == IEEE80211_S_RUN && /* XXX? */ 1225178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1226178354Ssam} 1227178354Ssam 1228178354Ssam/* 1229178354Ssam * Return non-zero if a backgrond scan may be started: 1230178354Ssam * o bg scanning is administratively enabled 1231178354Ssam * o no channel switch is pending 1232178354Ssam * o we are not boosted on a dynamic turbo channel 1233178354Ssam * o there has not been a scan recently 1234178354Ssam * o there has not been any traffic recently 1235178354Ssam */ 1236178354Ssamstatic __inline int 1237178354Ssamstartbgscan(struct ieee80211vap *vap) 1238178354Ssam{ 1239178354Ssam struct ieee80211com *ic = vap->iv_ic; 1240178354Ssam 1241178354Ssam return ((vap->iv_flags & IEEE80211_F_BGSCAN) && 1242178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1243190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1244178354Ssam !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && 1245190391Ssam#endif 1246178354Ssam time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) && 1247178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1248178354Ssam} 1249178354Ssam 1250178354Ssamstatic void 1251178354Ssamsta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, 1252192468Ssam int subtype, int rssi, int nf) 1253178354Ssam{ 1254178354Ssam#define ISPROBE(_st) ((_st) == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1255178354Ssam#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP) 1256178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1257178354Ssam struct ieee80211com *ic = ni->ni_ic; 1258178354Ssam struct ieee80211_frame *wh; 1259178354Ssam uint8_t *frm, *efrm; 1260178354Ssam uint8_t *rates, *xrates, *wme, *htcap, *htinfo; 1261178354Ssam uint8_t rate; 1262178354Ssam 1263178354Ssam wh = mtod(m0, struct ieee80211_frame *); 1264178354Ssam frm = (uint8_t *)&wh[1]; 1265178354Ssam efrm = mtod(m0, uint8_t *) + m0->m_len; 1266178354Ssam switch (subtype) { 1267178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1268178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: { 1269178354Ssam struct ieee80211_scanparams scan; 1270178354Ssam /* 1271178354Ssam * We process beacon/probe response frames: 1272178354Ssam * o when scanning, or 1273178354Ssam * o station mode when associated (to collect state 1274191444Srpaulo * updates such as 802.11g slot time) 1275178354Ssam * Frames otherwise received are discarded. 1276178354Ssam */ 1277178354Ssam if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) { 1278178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1279178354Ssam return; 1280178354Ssam } 1281178354Ssam /* XXX probe response in sta mode when !scanning? */ 1282178354Ssam if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1283178354Ssam return; 1284178354Ssam /* 1285178354Ssam * Count frame now that we know it's to be processed. 1286178354Ssam */ 1287178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1288178354Ssam vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1289178354Ssam IEEE80211_NODE_STAT(ni, rx_beacons); 1290178354Ssam } else 1291178354Ssam IEEE80211_NODE_STAT(ni, rx_proberesp); 1292178354Ssam /* 1293178354Ssam * When operating in station mode, check for state updates. 1294178354Ssam * Be careful to ignore beacons received while doing a 1295178354Ssam * background scan. We consider only 11g/WMM stuff right now. 1296178354Ssam */ 1297178354Ssam if (ni->ni_associd != 0 && 1298178354Ssam ((ic->ic_flags & IEEE80211_F_SCAN) == 0 || 1299178354Ssam IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) { 1300178354Ssam /* record tsf of last beacon */ 1301178354Ssam memcpy(ni->ni_tstamp.data, scan.tstamp, 1302178354Ssam sizeof(ni->ni_tstamp)); 1303178354Ssam /* count beacon frame for s/w bmiss handling */ 1304178354Ssam vap->iv_swbmiss_count++; 1305178354Ssam vap->iv_bmiss_count = 0; 1306178354Ssam if (ni->ni_erp != scan.erp) { 1307178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1308178354Ssam wh->i_addr2, 1309178354Ssam "erp change: was 0x%x, now 0x%x", 1310178354Ssam ni->ni_erp, scan.erp); 1311178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1312178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1313178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1314178354Ssam else 1315178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1316178354Ssam ni->ni_erp = scan.erp; 1317178354Ssam /* XXX statistic */ 1318178354Ssam /* XXX driver notification */ 1319178354Ssam } 1320178354Ssam if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) { 1321178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1322178354Ssam wh->i_addr2, 1323178354Ssam "capabilities change: was 0x%x, now 0x%x", 1324178354Ssam ni->ni_capinfo, scan.capinfo); 1325178354Ssam /* 1326178354Ssam * NB: we assume short preamble doesn't 1327178354Ssam * change dynamically 1328178354Ssam */ 1329178354Ssam ieee80211_set_shortslottime(ic, 1330178354Ssam IEEE80211_IS_CHAN_A(ic->ic_bsschan) || 1331178354Ssam (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1332178354Ssam ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME) 1333178354Ssam | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME); 1334178354Ssam /* XXX statistic */ 1335178354Ssam } 1336178354Ssam if (scan.wme != NULL && 1337178354Ssam (ni->ni_flags & IEEE80211_NODE_QOS) && 1338178354Ssam ieee80211_parse_wmeparams(vap, scan.wme, wh) > 0) 1339178354Ssam ieee80211_wme_updateparams(vap); 1340190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1341178354Ssam if (scan.ath != NULL) 1342178354Ssam ieee80211_parse_athparams(ni, scan.ath, wh); 1343190391Ssam#endif 1344183254Ssam if (scan.htcap != NULL && scan.htinfo != NULL && 1345193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1346183254Ssam ieee80211_ht_updateparams(ni, 1347183254Ssam scan.htcap, scan.htinfo); 1348178354Ssam /* XXX state changes? */ 1349178354Ssam } 1350178354Ssam if (scan.tim != NULL) { 1351178354Ssam struct ieee80211_tim_ie *tim = 1352178354Ssam (struct ieee80211_tim_ie *) scan.tim; 1353178354Ssam#if 0 1354178354Ssam int aid = IEEE80211_AID(ni->ni_associd); 1355178354Ssam int ix = aid / NBBY; 1356178354Ssam int min = tim->tim_bitctl &~ 1; 1357178354Ssam int max = tim->tim_len + min - 4; 1358178354Ssam if ((tim->tim_bitctl&1) || 1359178354Ssam (min <= ix && ix <= max && 1360178354Ssam isset(tim->tim_bitmap - min, aid))) { 1361178354Ssam /* 1362178354Ssam * XXX Do not let bg scan kick off 1363178354Ssam * we are expecting data. 1364178354Ssam */ 1365178354Ssam ic->ic_lastdata = ticks; 1366178354Ssam ieee80211_sta_pwrsave(vap, 0); 1367178354Ssam } 1368178354Ssam#endif 1369178354Ssam ni->ni_dtim_count = tim->tim_count; 1370178354Ssam ni->ni_dtim_period = tim->tim_period; 1371178354Ssam } 1372193439Ssam if (scan.csa != NULL && 1373193439Ssam (vap->iv_flags & IEEE80211_F_DOTH)) 1374193439Ssam ieee80211_parse_csaparams(vap, scan.csa, wh); 1375193439Ssam else if (ic->ic_flags & IEEE80211_F_CSAPENDING) { 1376193439Ssam /* 1377193439Ssam * No CSA ie or 11h disabled, but a channel 1378193439Ssam * switch is pending; drop out so we aren't 1379193439Ssam * stuck in CSA state. If the AP really is 1380193439Ssam * moving we'll get a beacon miss and scan. 1381193439Ssam */ 1382193439Ssam IEEE80211_LOCK(ic); 1383193439Ssam ieee80211_csa_cancelswitch(ic); 1384193439Ssam IEEE80211_UNLOCK(ic); 1385193439Ssam } 1386178354Ssam /* 1387178354Ssam * If scanning, pass the info to the scan module. 1388178354Ssam * Otherwise, check if it's the right time to do 1389178354Ssam * a background scan. Background scanning must 1390178354Ssam * be enabled and we must not be operating in the 1391178354Ssam * turbo phase of dynamic turbo mode. Then, 1392178354Ssam * it's been a while since the last background 1393178354Ssam * scan and if no data frames have come through 1394178354Ssam * recently, kick off a scan. Note that this 1395178354Ssam * is the mechanism by which a background scan 1396178354Ssam * is started _and_ continued each time we 1397178354Ssam * return on-channel to receive a beacon from 1398178354Ssam * our ap. 1399178354Ssam */ 1400178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1401178354Ssam ieee80211_add_scan(vap, &scan, wh, 1402192468Ssam subtype, rssi, nf); 1403178354Ssam } else if (contbgscan(vap)) { 1404178354Ssam ieee80211_bg_scan(vap, 0); 1405178354Ssam } else if (startbgscan(vap)) { 1406178354Ssam vap->iv_stats.is_scan_bg++; 1407178354Ssam#if 0 1408178354Ssam /* wakeup if we are sleeing */ 1409178354Ssam ieee80211_set_pwrsave(vap, 0); 1410178354Ssam#endif 1411178354Ssam ieee80211_bg_scan(vap, 0); 1412178354Ssam } 1413178354Ssam return; 1414178354Ssam } 1415178354Ssam /* 1416178354Ssam * If scanning, just pass information to the scan module. 1417178354Ssam */ 1418178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1419178354Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1420178354Ssam /* 1421178354Ssam * Actively scanning a channel marked passive; 1422178354Ssam * send a probe request now that we know there 1423178354Ssam * is 802.11 traffic present. 1424178354Ssam * 1425178354Ssam * XXX check if the beacon we recv'd gives 1426178354Ssam * us what we need and suppress the probe req 1427178354Ssam */ 1428178354Ssam ieee80211_probe_curchan(vap, 1); 1429178354Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1430178354Ssam } 1431192468Ssam ieee80211_add_scan(vap, &scan, wh, subtype, rssi, nf); 1432178354Ssam return; 1433178354Ssam } 1434178354Ssam break; 1435178354Ssam } 1436178354Ssam 1437178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: { 1438178354Ssam uint16_t algo, seq, status; 1439178354Ssam /* 1440178354Ssam * auth frame format 1441178354Ssam * [2] algorithm 1442178354Ssam * [2] sequence 1443178354Ssam * [2] status 1444178354Ssam * [tlv*] challenge 1445178354Ssam */ 1446178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1447178354Ssam algo = le16toh(*(uint16_t *)frm); 1448178354Ssam seq = le16toh(*(uint16_t *)(frm + 2)); 1449178354Ssam status = le16toh(*(uint16_t *)(frm + 4)); 1450178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, 1451178354Ssam "recv auth frame with algorithm %d seq %d", algo, seq); 1452178354Ssam 1453178354Ssam if (vap->iv_flags & IEEE80211_F_COUNTERM) { 1454178354Ssam IEEE80211_DISCARD(vap, 1455178354Ssam IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, 1456178354Ssam wh, "auth", "%s", "TKIP countermeasures enabled"); 1457178354Ssam vap->iv_stats.is_rx_auth_countermeasures++; 1458178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 1459178354Ssam ieee80211_send_error(ni, wh->i_addr2, 1460178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1461178354Ssam IEEE80211_REASON_MIC_FAILURE); 1462178354Ssam } 1463178354Ssam return; 1464178354Ssam } 1465178354Ssam if (algo == IEEE80211_AUTH_ALG_SHARED) 1466192468Ssam sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, 1467192468Ssam seq, status); 1468178354Ssam else if (algo == IEEE80211_AUTH_ALG_OPEN) 1469192468Ssam sta_auth_open(ni, wh, rssi, nf, seq, status); 1470178354Ssam else { 1471178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1472178354Ssam wh, "auth", "unsupported alg %d", algo); 1473178354Ssam vap->iv_stats.is_rx_auth_unsupported++; 1474178354Ssam return; 1475178354Ssam } 1476178354Ssam break; 1477178354Ssam } 1478178354Ssam 1479178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1480178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: { 1481178354Ssam uint16_t capinfo, associd; 1482178354Ssam uint16_t status; 1483178354Ssam 1484178354Ssam if (vap->iv_state != IEEE80211_S_ASSOC) { 1485178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1486178354Ssam return; 1487178354Ssam } 1488178354Ssam 1489178354Ssam /* 1490178354Ssam * asresp frame format 1491178354Ssam * [2] capability information 1492178354Ssam * [2] status 1493178354Ssam * [2] association ID 1494178354Ssam * [tlv] supported rates 1495178354Ssam * [tlv] extended supported rates 1496178354Ssam * [tlv] WME 1497178354Ssam * [tlv] HT capabilities 1498178354Ssam * [tlv] HT info 1499178354Ssam */ 1500178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1501178354Ssam ni = vap->iv_bss; 1502178354Ssam capinfo = le16toh(*(uint16_t *)frm); 1503178354Ssam frm += 2; 1504178354Ssam status = le16toh(*(uint16_t *)frm); 1505178354Ssam frm += 2; 1506178354Ssam if (status != 0) { 1507178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1508178354Ssam wh->i_addr2, "%sassoc failed (reason %d)", 1509178354Ssam ISREASSOC(subtype) ? "re" : "", status); 1510178354Ssam vap->iv_stats.is_rx_auth_fail++; /* XXX */ 1511178354Ssam return; 1512178354Ssam } 1513178354Ssam associd = le16toh(*(uint16_t *)frm); 1514178354Ssam frm += 2; 1515178354Ssam 1516178354Ssam rates = xrates = wme = htcap = htinfo = NULL; 1517178354Ssam while (efrm - frm > 1) { 1518178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1519178354Ssam switch (*frm) { 1520178354Ssam case IEEE80211_ELEMID_RATES: 1521178354Ssam rates = frm; 1522178354Ssam break; 1523178354Ssam case IEEE80211_ELEMID_XRATES: 1524178354Ssam xrates = frm; 1525178354Ssam break; 1526178354Ssam case IEEE80211_ELEMID_HTCAP: 1527178354Ssam htcap = frm; 1528178354Ssam break; 1529178354Ssam case IEEE80211_ELEMID_HTINFO: 1530178354Ssam htinfo = frm; 1531178354Ssam break; 1532178354Ssam case IEEE80211_ELEMID_VENDOR: 1533178354Ssam if (iswmeoui(frm)) 1534178354Ssam wme = frm; 1535193655Ssam else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { 1536178354Ssam /* 1537178354Ssam * Accept pre-draft HT ie's if the 1538178354Ssam * standard ones have not been seen. 1539178354Ssam */ 1540178354Ssam if (ishtcapoui(frm)) { 1541178354Ssam if (htcap == NULL) 1542178354Ssam htcap = frm; 1543178354Ssam } else if (ishtinfooui(frm)) { 1544178354Ssam if (htinfo == NULL) 1545178354Ssam htcap = frm; 1546178354Ssam } 1547178354Ssam } 1548178354Ssam /* XXX Atheros OUI support */ 1549178354Ssam break; 1550178354Ssam } 1551178354Ssam frm += frm[1] + 2; 1552178354Ssam } 1553178354Ssam 1554178354Ssam IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1555178354Ssam if (xrates != NULL) 1556178354Ssam IEEE80211_VERIFY_ELEMENT(xrates, 1557178354Ssam IEEE80211_RATE_MAXSIZE - rates[1], return); 1558178354Ssam rate = ieee80211_setup_rates(ni, rates, xrates, 1559178354Ssam IEEE80211_F_JOIN | 1560178354Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1561178354Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1562178354Ssam if (rate & IEEE80211_RATE_BASIC) { 1563178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1564178354Ssam wh->i_addr2, 1565178354Ssam "%sassoc failed (rate set mismatch)", 1566178354Ssam ISREASSOC(subtype) ? "re" : ""); 1567178354Ssam vap->iv_stats.is_rx_assoc_norate++; 1568178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1569178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1570178354Ssam return; 1571178354Ssam } 1572178354Ssam 1573178354Ssam ni->ni_capinfo = capinfo; 1574178354Ssam ni->ni_associd = associd; 1575178354Ssam if (ni->ni_jointime == 0) 1576178354Ssam ni->ni_jointime = time_uptime; 1577178354Ssam if (wme != NULL && 1578178354Ssam ieee80211_parse_wmeparams(vap, wme, wh) >= 0) { 1579178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1580178354Ssam ieee80211_wme_updateparams(vap); 1581178354Ssam } else 1582178354Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1583178354Ssam /* 1584178354Ssam * Setup HT state according to the negotiation. 1585178354Ssam * 1586178354Ssam * NB: shouldn't need to check if HT use is enabled but some 1587178354Ssam * ap's send back HT ie's even when we don't indicate we 1588178354Ssam * are HT capable in our AssocReq. 1589178354Ssam */ 1590178354Ssam if (htcap != NULL && htinfo != NULL && 1591193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1592183254Ssam ieee80211_ht_node_init(ni); 1593183254Ssam ieee80211_ht_updateparams(ni, htcap, htinfo); 1594178354Ssam ieee80211_setup_htrates(ni, htcap, 1595178354Ssam IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 1596178354Ssam ieee80211_setup_basic_htrates(ni, htinfo); 1597193966Ssam ieee80211_node_setuptxparms(ni); 1598190579Ssam } else { 1599190579Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1600190579Ssam if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_ATH)) 1601190579Ssam ieee80211_ff_node_init(ni); 1602190579Ssam#endif 1603178354Ssam } 1604178354Ssam /* 1605178354Ssam * Configure state now that we are associated. 1606178354Ssam * 1607178354Ssam * XXX may need different/additional driver callbacks? 1608178354Ssam */ 1609178354Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1610178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) { 1611178354Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 1612178354Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 1613178354Ssam } else { 1614178354Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 1615178354Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 1616178354Ssam } 1617178354Ssam ieee80211_set_shortslottime(ic, 1618178354Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1619178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1620178354Ssam /* 1621178354Ssam * Honor ERP protection. 1622178354Ssam * 1623178354Ssam * NB: ni_erp should zero for non-11g operation. 1624178354Ssam */ 1625178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1626178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1627178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1628178354Ssam else 1629178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1630178354Ssam IEEE80211_NOTE_MAC(vap, 1631178354Ssam IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2, 1632183256Ssam "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 1633178354Ssam ISREASSOC(subtype) ? "re" : "", 1634178354Ssam IEEE80211_NODE_AID(ni), 1635178354Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 1636178354Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 1637178354Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "", 1638178354Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 1639178354Ssam ni->ni_flags & IEEE80211_NODE_HT ? 1640182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 1641178354Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 1642183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 1643183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 1644183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 1645178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 1646178354Ssam ", fast-frames" : "", 1647178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 1648178354Ssam ", turbo" : "" 1649178354Ssam ); 1650178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, subtype); 1651178354Ssam break; 1652178354Ssam } 1653178354Ssam 1654178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: { 1655178354Ssam uint16_t reason; 1656178354Ssam 1657178354Ssam if (vap->iv_state == IEEE80211_S_SCAN) { 1658178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1659178354Ssam return; 1660178354Ssam } 1661178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1662178354Ssam /* NB: can happen when in promiscuous mode */ 1663178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1664178354Ssam break; 1665178354Ssam } 1666178354Ssam 1667178354Ssam /* 1668178354Ssam * deauth frame format 1669178354Ssam * [2] reason 1670178354Ssam */ 1671178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1672178354Ssam reason = le16toh(*(uint16_t *)frm); 1673178354Ssam 1674178354Ssam vap->iv_stats.is_rx_deauth++; 1675178354Ssam vap->iv_stats.is_rx_deauth_code = reason; 1676178354Ssam IEEE80211_NODE_STAT(ni, rx_deauth); 1677178354Ssam 1678178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, 1679178354Ssam "recv deauthenticate (reason %d)", reason); 1680178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 1681178354Ssam (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH); 1682178354Ssam break; 1683178354Ssam } 1684178354Ssam 1685178354Ssam case IEEE80211_FC0_SUBTYPE_DISASSOC: { 1686178354Ssam uint16_t reason; 1687178354Ssam 1688178354Ssam if (vap->iv_state != IEEE80211_S_RUN && 1689178354Ssam vap->iv_state != IEEE80211_S_ASSOC && 1690178354Ssam vap->iv_state != IEEE80211_S_AUTH) { 1691178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1692178354Ssam return; 1693178354Ssam } 1694178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1695178354Ssam /* NB: can happen when in promiscuous mode */ 1696178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1697178354Ssam break; 1698178354Ssam } 1699178354Ssam 1700178354Ssam /* 1701178354Ssam * disassoc frame format 1702178354Ssam * [2] reason 1703178354Ssam */ 1704178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1705178354Ssam reason = le16toh(*(uint16_t *)frm); 1706178354Ssam 1707178354Ssam vap->iv_stats.is_rx_disassoc++; 1708178354Ssam vap->iv_stats.is_rx_disassoc_code = reason; 1709178354Ssam IEEE80211_NODE_STAT(ni, rx_disassoc); 1710178354Ssam 1711178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 1712178354Ssam "recv disassociate (reason %d)", reason); 1713178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1714178354Ssam break; 1715178354Ssam } 1716178354Ssam 1717178354Ssam case IEEE80211_FC0_SUBTYPE_ACTION: 1718178354Ssam if (vap->iv_state == IEEE80211_S_RUN) { 1719178354Ssam if (ieee80211_parse_action(ni, m0) == 0) 1720178354Ssam ic->ic_recv_action(ni, frm, efrm); 1721178354Ssam } else 1722178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1723178354Ssam break; 1724178354Ssam 1725178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1726178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1727178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1728178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1729178354Ssam return; 1730178354Ssam default: 1731178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1732178354Ssam wh, "mgt", "subtype 0x%x not handled", subtype); 1733178354Ssam vap->iv_stats.is_rx_badsubtype++; 1734178354Ssam break; 1735178354Ssam } 1736178354Ssam#undef ISREASSOC 1737178354Ssam#undef ISPROBE 1738178354Ssam} 1739191546Ssam 1740191546Ssamstatic void 1741191546Ssamsta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m0, int subtype) 1742191546Ssam{ 1743191546Ssam} 1744