ieee80211_sta.c revision 227338
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 227338 2011-11-08 14:28:33Z adrian $"); 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 63211295Sbschmidt#include <net80211/ieee80211_ratectl.h> 64178354Ssam 65178354Ssam#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 66178354Ssam 67178354Ssamstatic void sta_vattach(struct ieee80211vap *); 68178354Ssamstatic void sta_beacon_miss(struct ieee80211vap *); 69178354Ssamstatic int sta_newstate(struct ieee80211vap *, enum ieee80211_state, int); 70192468Ssamstatic int sta_input(struct ieee80211_node *, struct mbuf *, int, int); 71178354Ssamstatic void sta_recv_mgmt(struct ieee80211_node *, struct mbuf *, 72192468Ssam int subtype, int rssi, int nf); 73191546Ssamstatic void sta_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); 74178354Ssam 75178354Ssamvoid 76178354Ssamieee80211_sta_attach(struct ieee80211com *ic) 77178354Ssam{ 78178354Ssam ic->ic_vattach[IEEE80211_M_STA] = sta_vattach; 79178354Ssam} 80178354Ssam 81178354Ssamvoid 82178354Ssamieee80211_sta_detach(struct ieee80211com *ic) 83178354Ssam{ 84178354Ssam} 85178354Ssam 86178354Ssamstatic void 87178354Ssamsta_vdetach(struct ieee80211vap *vap) 88178354Ssam{ 89178354Ssam} 90178354Ssam 91178354Ssamstatic void 92178354Ssamsta_vattach(struct ieee80211vap *vap) 93178354Ssam{ 94178354Ssam vap->iv_newstate = sta_newstate; 95178354Ssam vap->iv_input = sta_input; 96178354Ssam vap->iv_recv_mgmt = sta_recv_mgmt; 97191546Ssam vap->iv_recv_ctl = sta_recv_ctl; 98178354Ssam vap->iv_opdetach = sta_vdetach; 99178354Ssam vap->iv_bmiss = sta_beacon_miss; 100178354Ssam} 101178354Ssam 102178354Ssam/* 103178354Ssam * Handle a beacon miss event. The common code filters out 104178354Ssam * spurious events that can happen when scanning and/or before 105178354Ssam * reaching RUN state. 106178354Ssam */ 107178354Ssamstatic void 108178354Ssamsta_beacon_miss(struct ieee80211vap *vap) 109178354Ssam{ 110193439Ssam struct ieee80211com *ic = vap->iv_ic; 111178354Ssam 112225913Sadrian IEEE80211_LOCK_ASSERT(ic); 113225913Sadrian 114193439Ssam KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning")); 115193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 116193439Ssam ("wrong state %s", ieee80211_state_name[vap->iv_state])); 117178354Ssam 118193439Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 119193439Ssam "beacon miss, mode %s state %s\n", 120193439Ssam ieee80211_opmode_name[vap->iv_opmode], 121193439Ssam ieee80211_state_name[vap->iv_state]); 122193439Ssam 123193439Ssam if (vap->iv_state == IEEE80211_S_CSA) { 124193439Ssam /* 125193439Ssam * A Channel Switch is pending; assume we missed the 126193439Ssam * beacon that would've completed the process and just 127193439Ssam * force the switch. If we made a mistake we'll not 128193439Ssam * find the AP on the new channel and fall back to a 129193439Ssam * normal scan. 130193439Ssam */ 131193439Ssam ieee80211_csa_completeswitch(ic); 132193439Ssam return; 133193439Ssam } 134178354Ssam if (++vap->iv_bmiss_count < vap->iv_bmiss_max) { 135178354Ssam /* 136178354Ssam * Send a directed probe req before falling back to a 137178354Ssam * scan; if we receive a response ic_bmiss_count will 138178354Ssam * be reset. Some cards mistakenly report beacon miss 139178354Ssam * so this avoids the expensive scan if the ap is 140178354Ssam * still there. 141178354Ssam */ 142178354Ssam ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr, 143178354Ssam vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid, 144178354Ssam vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); 145178354Ssam return; 146178354Ssam } 147205140Sweongyo 148205140Sweongyo callout_stop(&vap->iv_swbmiss); 149178354Ssam vap->iv_bmiss_count = 0; 150178354Ssam vap->iv_stats.is_beacon_miss++; 151178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 152190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 153190402Ssam struct ieee80211com *ic = vap->iv_ic; 154190402Ssam 155178354Ssam /* 156178354Ssam * If we receive a beacon miss interrupt when using 157178354Ssam * dynamic turbo, attempt to switch modes before 158178354Ssam * reassociating. 159178354Ssam */ 160178354Ssam if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP)) 161178354Ssam ieee80211_dturbo_switch(vap, 162178354Ssam ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO); 163190391Ssam#endif 164178354Ssam /* 165178354Ssam * Try to reassociate before scanning for a new ap. 166178354Ssam */ 167178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 168178354Ssam } else { 169178354Ssam /* 170178354Ssam * Somebody else is controlling state changes (e.g. 171178354Ssam * a user-mode app) don't do anything that would 172178354Ssam * confuse them; just drop into scan mode so they'll 173178354Ssam * notified of the state change and given control. 174178354Ssam */ 175178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); 176178354Ssam } 177178354Ssam} 178178354Ssam 179178354Ssam/* 180178354Ssam * Handle deauth with reason. We retry only for 181178354Ssam * the cases where we might succeed. Otherwise 182178354Ssam * we downgrade the ap and scan. 183178354Ssam */ 184178354Ssamstatic void 185178354Ssamsta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason) 186178354Ssam{ 187178354Ssam switch (reason) { 188178354Ssam case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */ 189178354Ssam case IEEE80211_STATUS_TIMEOUT: 190178354Ssam case IEEE80211_REASON_ASSOC_EXPIRE: 191178354Ssam case IEEE80211_REASON_NOT_AUTHED: 192178354Ssam case IEEE80211_REASON_NOT_ASSOCED: 193178354Ssam case IEEE80211_REASON_ASSOC_LEAVE: 194178354Ssam case IEEE80211_REASON_ASSOC_NOT_AUTHED: 195178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); 196178354Ssam break; 197178354Ssam default: 198178354Ssam ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason); 199178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 200178354Ssam ieee80211_check_scan_current(vap); 201178354Ssam break; 202178354Ssam } 203178354Ssam} 204178354Ssam 205178354Ssam/* 206178354Ssam * IEEE80211_M_STA vap state machine handler. 207178354Ssam * This routine handles the main states in the 802.11 protocol. 208178354Ssam */ 209178354Ssamstatic int 210178354Ssamsta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 211178354Ssam{ 212178354Ssam struct ieee80211com *ic = vap->iv_ic; 213178354Ssam struct ieee80211_node *ni; 214178354Ssam enum ieee80211_state ostate; 215178354Ssam 216178354Ssam IEEE80211_LOCK_ASSERT(ic); 217178354Ssam 218178354Ssam ostate = vap->iv_state; 219178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 220178354Ssam __func__, ieee80211_state_name[ostate], 221178354Ssam ieee80211_state_name[nstate], arg); 222178354Ssam vap->iv_state = nstate; /* state transition */ 223178354Ssam callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */ 224178354Ssam if (ostate != IEEE80211_S_SCAN) 225178354Ssam ieee80211_cancel_scan(vap); /* background scan */ 226178354Ssam ni = vap->iv_bss; /* NB: no reference held */ 227178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) 228178354Ssam callout_stop(&vap->iv_swbmiss); 229178354Ssam switch (nstate) { 230178354Ssam case IEEE80211_S_INIT: 231178354Ssam switch (ostate) { 232178354Ssam case IEEE80211_S_SLEEP: 233178354Ssam /* XXX wakeup */ 234178354Ssam case IEEE80211_S_RUN: 235178354Ssam IEEE80211_SEND_MGMT(ni, 236178354Ssam IEEE80211_FC0_SUBTYPE_DISASSOC, 237178354Ssam IEEE80211_REASON_ASSOC_LEAVE); 238178354Ssam ieee80211_sta_leave(ni); 239178354Ssam break; 240178354Ssam case IEEE80211_S_ASSOC: 241178354Ssam IEEE80211_SEND_MGMT(ni, 242178354Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 243178354Ssam IEEE80211_REASON_AUTH_LEAVE); 244178354Ssam break; 245178354Ssam case IEEE80211_S_SCAN: 246178354Ssam ieee80211_cancel_scan(vap); 247178354Ssam break; 248178354Ssam default: 249178354Ssam goto invalid; 250178354Ssam } 251178354Ssam if (ostate != IEEE80211_S_INIT) { 252178354Ssam /* NB: optimize INIT -> INIT case */ 253178354Ssam ieee80211_reset_bss(vap); 254178354Ssam } 255178354Ssam if (vap->iv_auth->ia_detach != NULL) 256178354Ssam vap->iv_auth->ia_detach(vap); 257178354Ssam break; 258178354Ssam case IEEE80211_S_SCAN: 259178354Ssam switch (ostate) { 260178354Ssam case IEEE80211_S_INIT: 261178354Ssam /* 262178354Ssam * Initiate a scan. We can come here as a result 263178354Ssam * of an IEEE80211_IOC_SCAN_REQ too in which case 264178354Ssam * the vap will be marked with IEEE80211_FEXT_SCANREQ 265178354Ssam * and the scan request parameters will be present 266178354Ssam * in iv_scanreq. Otherwise we do the default. 267178354Ssam */ 268178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 269178354Ssam ieee80211_check_scan(vap, 270178354Ssam vap->iv_scanreq_flags, 271178354Ssam vap->iv_scanreq_duration, 272178354Ssam vap->iv_scanreq_mindwell, 273178354Ssam vap->iv_scanreq_maxdwell, 274178354Ssam vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 275178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 276178354Ssam } else 277178354Ssam ieee80211_check_scan_current(vap); 278178354Ssam break; 279178354Ssam case IEEE80211_S_SCAN: 280178354Ssam case IEEE80211_S_AUTH: 281178354Ssam case IEEE80211_S_ASSOC: 282178354Ssam /* 283178354Ssam * These can happen either because of a timeout 284178354Ssam * on an assoc/auth response or because of a 285178354Ssam * change in state that requires a reset. For 286178354Ssam * the former we're called with a non-zero arg 287178354Ssam * that is the cause for the failure; pass this 288178354Ssam * to the scan code so it can update state. 289178354Ssam * Otherwise trigger a new scan unless we're in 290178354Ssam * manual roaming mode in which case an application 291178354Ssam * must issue an explicit scan request. 292178354Ssam */ 293178354Ssam if (arg != 0) 294178354Ssam ieee80211_scan_assoc_fail(vap, 295178354Ssam vap->iv_bss->ni_macaddr, arg); 296178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 297178354Ssam ieee80211_check_scan_current(vap); 298178354Ssam break; 299178354Ssam case IEEE80211_S_RUN: /* beacon miss */ 300178354Ssam /* 301178354Ssam * Beacon miss. Notify user space and if not 302178354Ssam * under control of a user application (roaming 303178354Ssam * manual) kick off a scan to re-connect. 304178354Ssam */ 305178354Ssam ieee80211_sta_leave(ni); 306178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 307178354Ssam ieee80211_check_scan_current(vap); 308178354Ssam break; 309178354Ssam default: 310178354Ssam goto invalid; 311178354Ssam } 312178354Ssam break; 313178354Ssam case IEEE80211_S_AUTH: 314178354Ssam switch (ostate) { 315178354Ssam case IEEE80211_S_INIT: 316178354Ssam case IEEE80211_S_SCAN: 317178354Ssam IEEE80211_SEND_MGMT(ni, 318178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 319178354Ssam break; 320178354Ssam case IEEE80211_S_AUTH: 321178354Ssam case IEEE80211_S_ASSOC: 322178354Ssam switch (arg & 0xff) { 323178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 324178354Ssam /* ??? */ 325178354Ssam IEEE80211_SEND_MGMT(ni, 326178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 327178354Ssam break; 328178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 329178354Ssam sta_authretry(vap, ni, arg>>8); 330178354Ssam break; 331178354Ssam } 332178354Ssam break; 333178354Ssam case IEEE80211_S_RUN: 334178354Ssam switch (arg & 0xff) { 335178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 336178354Ssam IEEE80211_SEND_MGMT(ni, 337178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 338178354Ssam vap->iv_state = ostate; /* stay RUN */ 339178354Ssam break; 340178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 341178354Ssam ieee80211_sta_leave(ni); 342178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 343178354Ssam /* try to reauth */ 344178354Ssam IEEE80211_SEND_MGMT(ni, 345178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 346178354Ssam } 347178354Ssam break; 348178354Ssam } 349178354Ssam break; 350178354Ssam default: 351178354Ssam goto invalid; 352178354Ssam } 353178354Ssam break; 354178354Ssam case IEEE80211_S_ASSOC: 355178354Ssam switch (ostate) { 356178354Ssam case IEEE80211_S_AUTH: 357178354Ssam case IEEE80211_S_ASSOC: 358178354Ssam IEEE80211_SEND_MGMT(ni, 359178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 360178354Ssam break; 361178354Ssam case IEEE80211_S_SLEEP: /* cannot happen */ 362178354Ssam case IEEE80211_S_RUN: 363178354Ssam ieee80211_sta_leave(ni); 364178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 365178354Ssam IEEE80211_SEND_MGMT(ni, arg ? 366178354Ssam IEEE80211_FC0_SUBTYPE_REASSOC_REQ : 367178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 368178354Ssam } 369178354Ssam break; 370178354Ssam default: 371178354Ssam goto invalid; 372178354Ssam } 373178354Ssam break; 374178354Ssam case IEEE80211_S_RUN: 375178354Ssam if (vap->iv_flags & IEEE80211_F_WPA) { 376178354Ssam /* XXX validate prerequisites */ 377178354Ssam } 378178354Ssam switch (ostate) { 379178354Ssam case IEEE80211_S_RUN: 380193439Ssam case IEEE80211_S_CSA: 381178354Ssam break; 382178354Ssam case IEEE80211_S_AUTH: /* when join is done in fw */ 383178354Ssam case IEEE80211_S_ASSOC: 384178354Ssam#ifdef IEEE80211_DEBUG 385178354Ssam if (ieee80211_msg_debug(vap)) { 386178354Ssam ieee80211_note(vap, "%s with %s ssid ", 387178354Ssam (vap->iv_opmode == IEEE80211_M_STA ? 388178354Ssam "associated" : "synchronized"), 389178354Ssam ether_sprintf(ni->ni_bssid)); 390178354Ssam ieee80211_print_essid(vap->iv_bss->ni_essid, 391178354Ssam ni->ni_esslen); 392178354Ssam /* XXX MCS/HT */ 393178354Ssam printf(" channel %d start %uMb\n", 394178354Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 395178354Ssam IEEE80211_RATE2MBS(ni->ni_txrate)); 396178354Ssam } 397178354Ssam#endif 398178354Ssam ieee80211_scan_assoc_success(vap, ni->ni_macaddr); 399178354Ssam ieee80211_notify_node_join(ni, 400178354Ssam arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 401178354Ssam break; 402178354Ssam case IEEE80211_S_SLEEP: 403178354Ssam ieee80211_sta_pwrsave(vap, 0); 404178354Ssam break; 405178354Ssam default: 406178354Ssam goto invalid; 407178354Ssam } 408178354Ssam ieee80211_sync_curchan(ic); 409178354Ssam if (ostate != IEEE80211_S_RUN && 410178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) { 411178354Ssam /* 412178354Ssam * Start s/w beacon miss timer for devices w/o 413178354Ssam * hardware support. We fudge a bit here since 414178354Ssam * we're doing this in software. 415178354Ssam */ 416178354Ssam vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS( 417178354Ssam 2 * vap->iv_bmissthreshold * ni->ni_intval); 418178354Ssam vap->iv_swbmiss_count = 0; 419178354Ssam callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 420178354Ssam ieee80211_swbmiss, vap); 421178354Ssam } 422178354Ssam /* 423178354Ssam * When 802.1x is not in use mark the port authorized 424178354Ssam * at this point so traffic can flow. 425178354Ssam */ 426178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 427178354Ssam ieee80211_node_authorize(ni); 428184345Ssam /* 429184345Ssam * Fake association when joining an existing bss. 430184345Ssam */ 431184345Ssam if (ic->ic_newassoc != NULL) 432184345Ssam ic->ic_newassoc(vap->iv_bss, ostate != IEEE80211_S_RUN); 433178354Ssam break; 434193439Ssam case IEEE80211_S_CSA: 435193439Ssam if (ostate != IEEE80211_S_RUN) 436193439Ssam goto invalid; 437193439Ssam break; 438178354Ssam case IEEE80211_S_SLEEP: 439196783Ssam ieee80211_sta_pwrsave(vap, 1); 440178354Ssam break; 441178354Ssam default: 442178354Ssam invalid: 443184268Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 444184268Ssam "%s: unexpected state transition %s -> %s\n", __func__, 445178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 446178354Ssam break; 447178354Ssam } 448178354Ssam return 0; 449178354Ssam} 450178354Ssam 451178354Ssam/* 452178354Ssam * Return non-zero if the frame is an echo of a multicast 453178354Ssam * frame sent by ourself. The dir is known to be DSTODS. 454178354Ssam */ 455178354Ssamstatic __inline int 456178354Ssamisdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 457178354Ssam{ 458178354Ssam#define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh) 459178354Ssam#define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh) 460178354Ssam const uint8_t *sa; 461178354Ssam 462178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 463178354Ssam 464178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) 465178354Ssam return 0; 466178354Ssam sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4; 467178354Ssam return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr); 468178354Ssam#undef WH4 469178354Ssam#undef QWH4 470178354Ssam} 471178354Ssam 472178354Ssam/* 473178354Ssam * Return non-zero if the frame is an echo of a multicast 474178354Ssam * frame sent by ourself. The dir is known to be FROMDS. 475178354Ssam */ 476178354Ssamstatic __inline int 477178354Ssamisfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 478178354Ssam{ 479178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 480178354Ssam 481178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) 482178354Ssam return 0; 483178354Ssam return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 484178354Ssam} 485178354Ssam 486178354Ssam/* 487178354Ssam * Decide if a received management frame should be 488178354Ssam * printed when debugging is enabled. This filters some 489178354Ssam * of the less interesting frames that come frequently 490178354Ssam * (e.g. beacons). 491178354Ssam */ 492178354Ssamstatic __inline int 493178354Ssamdoprint(struct ieee80211vap *vap, int subtype) 494178354Ssam{ 495178354Ssam switch (subtype) { 496178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: 497178354Ssam return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); 498178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 499178354Ssam return 0; 500178354Ssam } 501178354Ssam return 1; 502178354Ssam} 503178354Ssam 504178354Ssam/* 505178354Ssam * Process a received frame. The node associated with the sender 506178354Ssam * should be supplied. If nothing was found in the node table then 507178354Ssam * the caller is assumed to supply a reference to iv_bss instead. 508178354Ssam * The RSSI and a timestamp are also supplied. The RSSI data is used 509178354Ssam * during AP scanning to select a AP to associate with; it can have 510178354Ssam * any units so long as values have consistent units and higher values 511178354Ssam * mean ``better signal''. The receive timestamp is currently not used 512178354Ssam * by the 802.11 layer. 513178354Ssam */ 514178354Ssamstatic int 515192468Ssamsta_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 516178354Ssam{ 517178354Ssam#define HAS_SEQ(type) ((type & 0x4) == 0) 518178354Ssam struct ieee80211vap *vap = ni->ni_vap; 519178354Ssam struct ieee80211com *ic = ni->ni_ic; 520178354Ssam struct ifnet *ifp = vap->iv_ifp; 521178354Ssam struct ieee80211_frame *wh; 522178354Ssam struct ieee80211_key *key; 523178354Ssam struct ether_header *eh; 524203422Srpaulo int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ 525178354Ssam uint8_t dir, type, subtype, qos; 526178354Ssam uint8_t *bssid; 527178354Ssam uint16_t rxseq; 528178354Ssam 529183247Ssam if (m->m_flags & M_AMPDU_MPDU) { 530178354Ssam /* 531178354Ssam * Fastpath for A-MPDU reorder q resubmission. Frames 532183247Ssam * w/ M_AMPDU_MPDU marked have already passed through 533183247Ssam * here but were received out of order and been held on 534183247Ssam * the reorder queue. When resubmitted they are marked 535183247Ssam * with the M_AMPDU_MPDU flag and we can bypass most of 536183247Ssam * the normal processing. 537178354Ssam */ 538178354Ssam wh = mtod(m, struct ieee80211_frame *); 539178354Ssam type = IEEE80211_FC0_TYPE_DATA; 540178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 541178354Ssam subtype = IEEE80211_FC0_SUBTYPE_QOS; 542178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ 543178354Ssam goto resubmit_ampdu; 544178354Ssam } 545178354Ssam 546178354Ssam KASSERT(ni != NULL, ("null node")); 547178354Ssam ni->ni_inact = ni->ni_inact_reload; 548178354Ssam 549178354Ssam type = -1; /* undefined */ 550178354Ssam 551178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 552178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 553178354Ssam ni->ni_macaddr, NULL, 554178354Ssam "too short (1): len %u", m->m_pkthdr.len); 555178354Ssam vap->iv_stats.is_rx_tooshort++; 556178354Ssam goto out; 557178354Ssam } 558178354Ssam /* 559178354Ssam * Bit of a cheat here, we use a pointer for a 3-address 560178354Ssam * frame format but don't reference fields past outside 561178354Ssam * ieee80211_frame_min w/o first validating the data is 562178354Ssam * present. 563178354Ssam */ 564178354Ssam wh = mtod(m, struct ieee80211_frame *); 565178354Ssam 566178354Ssam if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 567178354Ssam IEEE80211_FC0_VERSION_0) { 568178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 569191547Ssam ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", 570191547Ssam wh->i_fc[0], wh->i_fc[1]); 571178354Ssam vap->iv_stats.is_rx_badversion++; 572178354Ssam goto err; 573178354Ssam } 574178354Ssam 575178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 576178354Ssam type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 577178354Ssam subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 578178354Ssam if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 579178354Ssam bssid = wh->i_addr2; 580178354Ssam if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { 581178354Ssam /* not interested in */ 582178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 583178354Ssam bssid, NULL, "%s", "not to bss"); 584178354Ssam vap->iv_stats.is_rx_wrongbss++; 585178354Ssam goto out; 586178354Ssam } 587227338Sadrian 588227338Sadrian /* 589227338Sadrian * Some devices may be in a promiscuous mode 590227338Sadrian * where they receive frames for multiple station 591227338Sadrian * addresses. 592227338Sadrian * 593227338Sadrian * If we receive a data frame that isn't 594227338Sadrian * destined to our VAP MAC, drop it. 595227338Sadrian * 596227338Sadrian * XXX TODO: This is only enforced when not scanning; 597227338Sadrian * XXX it assumes a software-driven scan will put the NIC 598227338Sadrian * XXX into a "no data frames" mode before setting this 599227338Sadrian * XXX flag. Otherwise it may be possible that we'll still 600227338Sadrian * XXX process data frames whilst scanning. 601227338Sadrian */ 602227338Sadrian if ((! IEEE80211_IS_MULTICAST(wh->i_addr1)) 603227338Sadrian && (! IEEE80211_ADDR_EQ(wh->i_addr1, IF_LLADDR(ifp)))) { 604227338Sadrian IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 605227338Sadrian bssid, NULL, "not to cur sta: lladdr=%6D, addr1=%6D", 606227338Sadrian IF_LLADDR(ifp), ":", wh->i_addr1, ":"); 607227338Sadrian vap->iv_stats.is_rx_wrongbss++; 608227338Sadrian goto out; 609227338Sadrian } 610227338Sadrian 611178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 612192468Ssam ni->ni_noise = nf; 613209022Savatar if (HAS_SEQ(type) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 614178354Ssam uint8_t tid = ieee80211_gettid(wh); 615178354Ssam if (IEEE80211_QOS_HAS_SEQ(wh) && 616178354Ssam TID_TO_WME_AC(tid) >= WME_AC_VI) 617178354Ssam ic->ic_wme.wme_hipri_traffic++; 618178354Ssam rxseq = le16toh(*(uint16_t *)wh->i_seq); 619221418Sadrian if (! ieee80211_check_rxseq(ni, wh)) { 620178354Ssam /* duplicate, discard */ 621178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 622178354Ssam bssid, "duplicate", 623178354Ssam "seqno <%u,%u> fragno <%u,%u> tid %u", 624178354Ssam rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 625178354Ssam ni->ni_rxseqs[tid] >> 626178354Ssam IEEE80211_SEQ_SEQ_SHIFT, 627178354Ssam rxseq & IEEE80211_SEQ_FRAG_MASK, 628178354Ssam ni->ni_rxseqs[tid] & 629178354Ssam IEEE80211_SEQ_FRAG_MASK, 630178354Ssam tid); 631178354Ssam vap->iv_stats.is_rx_dup++; 632178354Ssam IEEE80211_NODE_STAT(ni, rx_dup); 633178354Ssam goto out; 634178354Ssam } 635178354Ssam ni->ni_rxseqs[tid] = rxseq; 636178354Ssam } 637178354Ssam } 638178354Ssam 639178354Ssam switch (type) { 640178354Ssam case IEEE80211_FC0_TYPE_DATA: 641178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 642178354Ssam if (m->m_len < hdrspace && 643178354Ssam (m = m_pullup(m, hdrspace)) == NULL) { 644178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 645178354Ssam ni->ni_macaddr, NULL, 646178354Ssam "data too short: expecting %u", hdrspace); 647178354Ssam vap->iv_stats.is_rx_tooshort++; 648178354Ssam goto out; /* XXX */ 649178354Ssam } 650178354Ssam /* 651183247Ssam * Handle A-MPDU re-ordering. If the frame is to be 652183247Ssam * processed directly then ieee80211_ampdu_reorder 653178354Ssam * will return 0; otherwise it has consumed the mbuf 654178354Ssam * and we should do nothing more with it. 655178354Ssam */ 656183247Ssam if ((m->m_flags & M_AMPDU) && 657178354Ssam (dir == IEEE80211_FC1_DIR_FROMDS || 658178354Ssam dir == IEEE80211_FC1_DIR_DSTODS) && 659178354Ssam ieee80211_ampdu_reorder(ni, m) != 0) { 660178354Ssam m = NULL; 661178354Ssam goto out; 662178354Ssam } 663178354Ssam resubmit_ampdu: 664178354Ssam if (dir == IEEE80211_FC1_DIR_FROMDS) { 665178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 666178354Ssam isfromds_mcastecho(vap, wh)) { 667178354Ssam /* 668178354Ssam * In IEEE802.11 network, multicast 669178354Ssam * packets sent from "me" are broadcast 670178354Ssam * from the AP; silently discard for 671178354Ssam * SIMPLEX interface. 672178354Ssam */ 673178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 674178354Ssam wh, "data", "%s", "multicast echo"); 675178354Ssam vap->iv_stats.is_rx_mcastecho++; 676178354Ssam goto out; 677178354Ssam } 678178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) && 679178354Ssam IEEE80211_IS_MULTICAST(wh->i_addr1)) { 680178354Ssam /* 681178354Ssam * DWDS sta's must drop 3-address mcast frames 682178354Ssam * as they will be sent separately as a 4-addr 683178354Ssam * frame. Accepting the 3-addr frame will 684178354Ssam * confuse the bridge into thinking the sending 685178354Ssam * sta is located at the end of WDS link. 686178354Ssam */ 687178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 688178354Ssam "3-address data", "%s", "DWDS enabled"); 689178354Ssam vap->iv_stats.is_rx_mcastecho++; 690178354Ssam goto out; 691178354Ssam } 692178354Ssam } else if (dir == IEEE80211_FC1_DIR_DSTODS) { 693178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) { 694178354Ssam IEEE80211_DISCARD(vap, 695178354Ssam IEEE80211_MSG_INPUT, wh, "4-address data", 696178354Ssam "%s", "DWDS not enabled"); 697178354Ssam vap->iv_stats.is_rx_wrongdir++; 698178354Ssam goto out; 699178354Ssam } 700178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 701178354Ssam isdstods_mcastecho(vap, wh)) { 702178354Ssam /* 703178354Ssam * In IEEE802.11 network, multicast 704178354Ssam * packets sent from "me" are broadcast 705178354Ssam * from the AP; silently discard for 706178354Ssam * SIMPLEX interface. 707178354Ssam */ 708178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 709178354Ssam "4-address data", "%s", "multicast echo"); 710178354Ssam vap->iv_stats.is_rx_mcastecho++; 711178354Ssam goto out; 712178354Ssam } 713178354Ssam } else { 714178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 715178354Ssam "data", "incorrect dir 0x%x", dir); 716178354Ssam vap->iv_stats.is_rx_wrongdir++; 717178354Ssam goto out; 718178354Ssam } 719178354Ssam 720178354Ssam /* 721178354Ssam * Handle privacy requirements. Note that we 722178354Ssam * must not be preempted from here until after 723178354Ssam * we (potentially) call ieee80211_crypto_demic; 724178354Ssam * otherwise we may violate assumptions in the 725178354Ssam * crypto cipher modules used to do delayed update 726178354Ssam * of replay sequence numbers. 727178354Ssam */ 728178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 729178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 730178354Ssam /* 731178354Ssam * Discard encrypted frames when privacy is off. 732178354Ssam */ 733178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 734178354Ssam wh, "WEP", "%s", "PRIVACY off"); 735178354Ssam vap->iv_stats.is_rx_noprivacy++; 736178354Ssam IEEE80211_NODE_STAT(ni, rx_noprivacy); 737178354Ssam goto out; 738178354Ssam } 739178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 740178354Ssam if (key == NULL) { 741178354Ssam /* NB: stats+msgs handled in crypto_decap */ 742178354Ssam IEEE80211_NODE_STAT(ni, rx_wepfail); 743178354Ssam goto out; 744178354Ssam } 745178354Ssam wh = mtod(m, struct ieee80211_frame *); 746178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 747178354Ssam } else { 748178354Ssam /* XXX M_WEP and IEEE80211_F_PRIVACY */ 749178354Ssam key = NULL; 750178354Ssam } 751178354Ssam 752178354Ssam /* 753178354Ssam * Save QoS bits for use below--before we strip the header. 754178354Ssam */ 755178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 756178354Ssam qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 757178354Ssam ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 758178354Ssam ((struct ieee80211_qosframe *)wh)->i_qos[0]; 759178354Ssam } else 760178354Ssam qos = 0; 761178354Ssam 762178354Ssam /* 763178354Ssam * Next up, any fragmentation. 764178354Ssam */ 765178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 766178354Ssam m = ieee80211_defrag(ni, m, hdrspace); 767178354Ssam if (m == NULL) { 768178354Ssam /* Fragment dropped or frame not complete yet */ 769178354Ssam goto out; 770178354Ssam } 771178354Ssam } 772178354Ssam wh = NULL; /* no longer valid, catch any uses */ 773178354Ssam 774178354Ssam /* 775178354Ssam * Next strip any MSDU crypto bits. 776178354Ssam */ 777178354Ssam if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { 778178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 779178354Ssam ni->ni_macaddr, "data", "%s", "demic error"); 780178354Ssam vap->iv_stats.is_rx_demicfail++; 781178354Ssam IEEE80211_NODE_STAT(ni, rx_demicfail); 782178354Ssam goto out; 783178354Ssam } 784178354Ssam 785178354Ssam /* copy to listener after decrypt */ 786192468Ssam if (ieee80211_radiotap_active_vap(vap)) 787202967Srpaulo ieee80211_radiotap_rx(vap, m); 788178354Ssam need_tap = 0; 789178354Ssam 790178354Ssam /* 791178354Ssam * Finally, strip the 802.11 header. 792178354Ssam */ 793178354Ssam m = ieee80211_decap(vap, m, hdrspace); 794178354Ssam if (m == NULL) { 795178354Ssam /* XXX mask bit to check for both */ 796178354Ssam /* don't count Null data frames as errors */ 797178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 798178354Ssam subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 799178354Ssam goto out; 800178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 801178354Ssam ni->ni_macaddr, "data", "%s", "decap error"); 802178354Ssam vap->iv_stats.is_rx_decap++; 803178354Ssam IEEE80211_NODE_STAT(ni, rx_decap); 804178354Ssam goto err; 805178354Ssam } 806178354Ssam eh = mtod(m, struct ether_header *); 807178354Ssam if (!ieee80211_node_is_authorized(ni)) { 808178354Ssam /* 809178354Ssam * Deny any non-PAE frames received prior to 810178354Ssam * authorization. For open/shared-key 811178354Ssam * authentication the port is mark authorized 812178354Ssam * after authentication completes. For 802.1x 813178354Ssam * the port is not marked authorized by the 814178354Ssam * authenticator until the handshake has completed. 815178354Ssam */ 816178354Ssam if (eh->ether_type != htons(ETHERTYPE_PAE)) { 817178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 818178354Ssam eh->ether_shost, "data", 819178354Ssam "unauthorized port: ether type 0x%x len %u", 820178354Ssam eh->ether_type, m->m_pkthdr.len); 821178354Ssam vap->iv_stats.is_rx_unauth++; 822178354Ssam IEEE80211_NODE_STAT(ni, rx_unauth); 823178354Ssam goto err; 824178354Ssam } 825178354Ssam } else { 826178354Ssam /* 827178354Ssam * When denying unencrypted frames, discard 828178354Ssam * any non-PAE frames received without encryption. 829178354Ssam */ 830178354Ssam if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && 831178354Ssam (key == NULL && (m->m_flags & M_WEP) == 0) && 832178354Ssam eh->ether_type != htons(ETHERTYPE_PAE)) { 833178354Ssam /* 834178354Ssam * Drop unencrypted frames. 835178354Ssam */ 836178354Ssam vap->iv_stats.is_rx_unencrypted++; 837178354Ssam IEEE80211_NODE_STAT(ni, rx_unencrypted); 838178354Ssam goto out; 839178354Ssam } 840178354Ssam } 841178354Ssam /* XXX require HT? */ 842178354Ssam if (qos & IEEE80211_QOS_AMSDU) { 843178354Ssam m = ieee80211_decap_amsdu(ni, m); 844178354Ssam if (m == NULL) 845178354Ssam return IEEE80211_FC0_TYPE_DATA; 846190391Ssam } else { 847190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 848190391Ssam m = ieee80211_decap_fastframe(vap, ni, m); 849190391Ssam if (m == NULL) 850178354Ssam return IEEE80211_FC0_TYPE_DATA; 851190391Ssam#endif 852178354Ssam } 853178354Ssam ieee80211_deliver_data(vap, ni, m); 854178354Ssam return IEEE80211_FC0_TYPE_DATA; 855178354Ssam 856178354Ssam case IEEE80211_FC0_TYPE_MGT: 857178354Ssam vap->iv_stats.is_rx_mgmt++; 858178354Ssam IEEE80211_NODE_STAT(ni, rx_mgmt); 859178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 860178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 861178354Ssam wh, "data", "incorrect dir 0x%x", dir); 862178354Ssam vap->iv_stats.is_rx_wrongdir++; 863178354Ssam goto err; 864178354Ssam } 865178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 866178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 867178354Ssam ni->ni_macaddr, "mgt", "too short: len %u", 868178354Ssam m->m_pkthdr.len); 869178354Ssam vap->iv_stats.is_rx_tooshort++; 870178354Ssam goto out; 871178354Ssam } 872178354Ssam#ifdef IEEE80211_DEBUG 873178354Ssam if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || 874178354Ssam ieee80211_msg_dumppkts(vap)) { 875178354Ssam if_printf(ifp, "received %s from %s rssi %d\n", 876178354Ssam ieee80211_mgt_subtype_name[subtype >> 877178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 878178354Ssam ether_sprintf(wh->i_addr2), rssi); 879178354Ssam } 880178354Ssam#endif 881178354Ssam if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 882178354Ssam if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { 883178354Ssam /* 884178354Ssam * Only shared key auth frames with a challenge 885178354Ssam * should be encrypted, discard all others. 886178354Ssam */ 887178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 888178354Ssam wh, ieee80211_mgt_subtype_name[subtype >> 889178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 890178354Ssam "%s", "WEP set but not permitted"); 891178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 892178354Ssam goto out; 893178354Ssam } 894178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 895178354Ssam /* 896178354Ssam * Discard encrypted frames when privacy is off. 897178354Ssam */ 898178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 899178354Ssam wh, "mgt", "%s", "WEP set but PRIVACY off"); 900178354Ssam vap->iv_stats.is_rx_noprivacy++; 901178354Ssam goto out; 902178354Ssam } 903178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 904178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 905178354Ssam if (key == NULL) { 906178354Ssam /* NB: stats+msgs handled in crypto_decap */ 907178354Ssam goto out; 908178354Ssam } 909178354Ssam wh = mtod(m, struct ieee80211_frame *); 910178354Ssam wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 911178354Ssam } 912192468Ssam vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 913191534Ssam goto out; 914178354Ssam 915178354Ssam case IEEE80211_FC0_TYPE_CTL: 916178354Ssam vap->iv_stats.is_rx_ctl++; 917178354Ssam IEEE80211_NODE_STAT(ni, rx_ctrl); 918191546Ssam vap->iv_recv_ctl(ni, m, subtype); 919178354Ssam goto out; 920191549Ssam 921178354Ssam default: 922178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 923178354Ssam wh, NULL, "bad frame type 0x%x", type); 924178354Ssam /* should not come here */ 925178354Ssam break; 926178354Ssam } 927178354Ssamerr: 928178354Ssam ifp->if_ierrors++; 929178354Ssamout: 930178354Ssam if (m != NULL) { 931192765Ssam if (need_tap && ieee80211_radiotap_active_vap(vap)) 932192468Ssam ieee80211_radiotap_rx(vap, m); 933178354Ssam m_freem(m); 934178354Ssam } 935178354Ssam return type; 936178354Ssam} 937178354Ssam 938178354Ssamstatic void 939178354Ssamsta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, 940192468Ssam int rssi, int nf, uint16_t seq, uint16_t status) 941178354Ssam{ 942178354Ssam struct ieee80211vap *vap = ni->ni_vap; 943178354Ssam 944178354Ssam if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { 945178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 946178354Ssam ni->ni_macaddr, "open auth", 947178354Ssam "bad sta auth mode %u", ni->ni_authmode); 948178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX */ 949178354Ssam return; 950178354Ssam } 951178354Ssam if (vap->iv_state != IEEE80211_S_AUTH || 952178354Ssam seq != IEEE80211_AUTH_OPEN_RESPONSE) { 953178354Ssam vap->iv_stats.is_rx_bad_auth++; 954178354Ssam return; 955178354Ssam } 956178354Ssam if (status != 0) { 957178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, 958178354Ssam ni, "open auth failed (reason %d)", status); 959178354Ssam vap->iv_stats.is_rx_auth_fail++; 960178354Ssam vap->iv_stats.is_rx_authfail_code = status; 961178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 962178354Ssam IEEE80211_SCAN_FAIL_STATUS); 963178354Ssam } else 964178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 965178354Ssam} 966178354Ssam 967178354Ssamstatic void 968178354Ssamsta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, 969192468Ssam uint8_t *frm, uint8_t *efrm, int rssi, int nf, 970178354Ssam uint16_t seq, uint16_t status) 971178354Ssam{ 972178354Ssam struct ieee80211vap *vap = ni->ni_vap; 973178354Ssam uint8_t *challenge; 974178354Ssam int estatus; 975178354Ssam 976178354Ssam /* 977178354Ssam * NB: this can happen as we allow pre-shared key 978178354Ssam * authentication to be enabled w/o wep being turned 979178354Ssam * on so that configuration of these can be done 980178354Ssam * in any order. It may be better to enforce the 981178354Ssam * ordering in which case this check would just be 982178354Ssam * for sanity/consistency. 983178354Ssam */ 984178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 985178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 986178354Ssam ni->ni_macaddr, "shared key auth", 987178354Ssam "%s", " PRIVACY is disabled"); 988178354Ssam estatus = IEEE80211_STATUS_ALG; 989178354Ssam goto bad; 990178354Ssam } 991178354Ssam /* 992178354Ssam * Pre-shared key authentication is evil; accept 993178354Ssam * it only if explicitly configured (it is supported 994178354Ssam * mainly for compatibility with clients like OS X). 995178354Ssam */ 996178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_AUTO && 997178354Ssam ni->ni_authmode != IEEE80211_AUTH_SHARED) { 998178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 999178354Ssam ni->ni_macaddr, "shared key auth", 1000178354Ssam "bad sta auth mode %u", ni->ni_authmode); 1001178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */ 1002178354Ssam estatus = IEEE80211_STATUS_ALG; 1003178354Ssam goto bad; 1004178354Ssam } 1005178354Ssam 1006178354Ssam challenge = NULL; 1007178354Ssam if (frm + 1 < efrm) { 1008178354Ssam if ((frm[1] + 2) > (efrm - frm)) { 1009178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1010178354Ssam ni->ni_macaddr, "shared key auth", 1011178354Ssam "ie %d/%d too long", 1012178354Ssam frm[0], (frm[1] + 2) - (efrm - frm)); 1013178354Ssam vap->iv_stats.is_rx_bad_auth++; 1014178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1015178354Ssam goto bad; 1016178354Ssam } 1017178354Ssam if (*frm == IEEE80211_ELEMID_CHALLENGE) 1018178354Ssam challenge = frm; 1019178354Ssam frm += frm[1] + 2; 1020178354Ssam } 1021178354Ssam switch (seq) { 1022178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1023178354Ssam case IEEE80211_AUTH_SHARED_RESPONSE: 1024178354Ssam if (challenge == NULL) { 1025178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1026178354Ssam ni->ni_macaddr, "shared key auth", 1027178354Ssam "%s", "no challenge"); 1028178354Ssam vap->iv_stats.is_rx_bad_auth++; 1029178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1030178354Ssam goto bad; 1031178354Ssam } 1032178354Ssam if (challenge[1] != IEEE80211_CHALLENGE_LEN) { 1033178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1034178354Ssam ni->ni_macaddr, "shared key auth", 1035178354Ssam "bad challenge len %d", challenge[1]); 1036178354Ssam vap->iv_stats.is_rx_bad_auth++; 1037178354Ssam estatus = IEEE80211_STATUS_CHALLENGE; 1038178354Ssam goto bad; 1039178354Ssam } 1040178354Ssam default: 1041178354Ssam break; 1042178354Ssam } 1043178354Ssam if (vap->iv_state != IEEE80211_S_AUTH) 1044178354Ssam return; 1045178354Ssam switch (seq) { 1046178354Ssam case IEEE80211_AUTH_SHARED_PASS: 1047178354Ssam if (ni->ni_challenge != NULL) { 1048186302Ssam free(ni->ni_challenge, M_80211_NODE); 1049178354Ssam ni->ni_challenge = NULL; 1050178354Ssam } 1051178354Ssam if (status != 0) { 1052178354Ssam IEEE80211_NOTE_FRAME(vap, 1053178354Ssam IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh, 1054178354Ssam "shared key auth failed (reason %d)", status); 1055178354Ssam vap->iv_stats.is_rx_auth_fail++; 1056178354Ssam vap->iv_stats.is_rx_authfail_code = status; 1057178354Ssam return; 1058178354Ssam } 1059178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1060178354Ssam break; 1061178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1062178354Ssam if (!ieee80211_alloc_challenge(ni)) 1063178354Ssam return; 1064178354Ssam /* XXX could optimize by passing recvd challenge */ 1065178354Ssam memcpy(ni->ni_challenge, &challenge[2], challenge[1]); 1066178354Ssam IEEE80211_SEND_MGMT(ni, 1067178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); 1068178354Ssam break; 1069178354Ssam default: 1070178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH, 1071178354Ssam wh, "shared key auth", "bad seq %d", seq); 1072178354Ssam vap->iv_stats.is_rx_bad_auth++; 1073178354Ssam return; 1074178354Ssam } 1075178354Ssam return; 1076178354Ssambad: 1077178354Ssam /* 1078178354Ssam * Kick the state machine. This short-circuits 1079178354Ssam * using the mgt frame timeout to trigger the 1080178354Ssam * state transition. 1081178354Ssam */ 1082178354Ssam if (vap->iv_state == IEEE80211_S_AUTH) 1083178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1084178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1085178354Ssam} 1086178354Ssam 1087178354Ssamstatic int 1088178354Ssamieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm, 1089178354Ssam const struct ieee80211_frame *wh) 1090178354Ssam{ 1091178354Ssam#define MS(_v, _f) (((_v) & _f) >> _f##_S) 1092178354Ssam struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme; 1093178354Ssam u_int len = frm[1], qosinfo; 1094178354Ssam int i; 1095178354Ssam 1096178354Ssam if (len < sizeof(struct ieee80211_wme_param)-2) { 1097178354Ssam IEEE80211_DISCARD_IE(vap, 1098178354Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, 1099178354Ssam wh, "WME", "too short, len %u", len); 1100178354Ssam return -1; 1101178354Ssam } 1102178354Ssam qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)]; 1103178354Ssam qosinfo &= WME_QOSINFO_COUNT; 1104178354Ssam /* XXX do proper check for wraparound */ 1105178354Ssam if (qosinfo == wme->wme_wmeChanParams.cap_info) 1106178354Ssam return 0; 1107178354Ssam frm += __offsetof(struct ieee80211_wme_param, params_acParams); 1108178354Ssam for (i = 0; i < WME_NUM_AC; i++) { 1109178354Ssam struct wmeParams *wmep = 1110178354Ssam &wme->wme_wmeChanParams.cap_wmeParams[i]; 1111178354Ssam /* NB: ACI not used */ 1112178354Ssam wmep->wmep_acm = MS(frm[0], WME_PARAM_ACM); 1113178354Ssam wmep->wmep_aifsn = MS(frm[0], WME_PARAM_AIFSN); 1114178354Ssam wmep->wmep_logcwmin = MS(frm[1], WME_PARAM_LOGCWMIN); 1115178354Ssam wmep->wmep_logcwmax = MS(frm[1], WME_PARAM_LOGCWMAX); 1116178354Ssam wmep->wmep_txopLimit = LE_READ_2(frm+2); 1117178354Ssam frm += 4; 1118178354Ssam } 1119178354Ssam wme->wme_wmeChanParams.cap_info = qosinfo; 1120178354Ssam return 1; 1121178354Ssam#undef MS 1122178354Ssam} 1123178354Ssam 1124178354Ssam/* 1125193439Ssam * Process 11h Channel Switch Announcement (CSA) ie. If this 1126193439Ssam * is the first CSA then initiate the switch. Otherwise we 1127193439Ssam * track state and trigger completion and/or cancel of the switch. 1128193439Ssam * XXX should be public for IBSS use 1129193439Ssam */ 1130193439Ssamstatic void 1131193439Ssamieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm, 1132193439Ssam const struct ieee80211_frame *wh) 1133193439Ssam{ 1134193439Ssam struct ieee80211com *ic = vap->iv_ic; 1135193439Ssam const struct ieee80211_csa_ie *csa = 1136193439Ssam (const struct ieee80211_csa_ie *) frm; 1137193439Ssam 1138193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 1139193439Ssam ("state %s", ieee80211_state_name[vap->iv_state])); 1140193439Ssam 1141193439Ssam if (csa->csa_mode > 1) { 1142193439Ssam IEEE80211_DISCARD_IE(vap, 1143193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1144193439Ssam wh, "CSA", "invalid mode %u", csa->csa_mode); 1145193439Ssam return; 1146193439Ssam } 1147193439Ssam IEEE80211_LOCK(ic); 1148193439Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 1149193439Ssam /* 1150193439Ssam * Convert the channel number to a channel reference. We 1151193439Ssam * try first to preserve turbo attribute of the current 1152193439Ssam * channel then fallback. Note this will not work if the 1153193439Ssam * CSA specifies a channel that requires a band switch (e.g. 1154193439Ssam * 11a => 11g). This is intentional as 11h is defined only 1155193439Ssam * for 5GHz/11a and because the switch does not involve a 1156193439Ssam * reassociation, protocol state (capabilities, negotated 1157193439Ssam * rates, etc) may/will be wrong. 1158193439Ssam */ 1159193439Ssam struct ieee80211_channel *c = 1160193439Ssam ieee80211_find_channel_byieee(ic, csa->csa_newchan, 1161193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO)); 1162193439Ssam if (c == NULL) { 1163193439Ssam c = ieee80211_find_channel_byieee(ic, 1164193439Ssam csa->csa_newchan, 1165193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL)); 1166193439Ssam if (c == NULL) { 1167193439Ssam IEEE80211_DISCARD_IE(vap, 1168193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1169193439Ssam wh, "CSA", "invalid channel %u", 1170193439Ssam csa->csa_newchan); 1171193439Ssam goto done; 1172193439Ssam } 1173193439Ssam } 1174193439Ssam#if IEEE80211_CSA_COUNT_MIN > 0 1175193439Ssam if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) { 1176193439Ssam /* 1177193439Ssam * Require at least IEEE80211_CSA_COUNT_MIN count to 1178193439Ssam * reduce the risk of being redirected by a fabricated 1179193439Ssam * CSA. If a valid CSA is dropped we'll still get a 1180193439Ssam * beacon miss when the AP leaves the channel so we'll 1181193439Ssam * eventually follow to the new channel. 1182193439Ssam * 1183193439Ssam * NOTE: this violates the 11h spec that states that 1184193439Ssam * count may be any value and if 0 then a switch 1185193439Ssam * should happen asap. 1186193439Ssam */ 1187193439Ssam IEEE80211_DISCARD_IE(vap, 1188193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1189193439Ssam wh, "CSA", "count %u too small, must be >= %u", 1190193439Ssam csa->csa_count, IEEE80211_CSA_COUNT_MIN); 1191193439Ssam goto done; 1192193439Ssam } 1193193439Ssam#endif 1194193439Ssam ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count); 1195193439Ssam } else { 1196193439Ssam /* 1197193439Ssam * Validate this ie against the initial CSA. We require 1198193439Ssam * mode and channel not change and the count must be 1199193439Ssam * monotonically decreasing. This may be pointless and 1200193439Ssam * canceling the switch as a result may be too paranoid but 1201193439Ssam * in the worst case if we drop out of CSA because of this 1202193439Ssam * and the AP does move then we'll just end up taking a 1203193439Ssam * beacon miss and scan to find the AP. 1204193439Ssam * 1205193439Ssam * XXX may want <= on count as we also process ProbeResp 1206193439Ssam * frames and those may come in w/ the same count as the 1207193439Ssam * previous beacon; but doing so leaves us open to a stuck 1208193439Ssam * count until we add a dead-man timer 1209193439Ssam */ 1210193439Ssam if (!(csa->csa_count < ic->ic_csa_count && 1211193439Ssam csa->csa_mode == ic->ic_csa_mode && 1212193439Ssam csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) { 1213193439Ssam IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh, 1214193439Ssam "CSA ie mismatch, initial ie <%d,%d,%d>, " 1215193439Ssam "this ie <%d,%d,%d>", ic->ic_csa_mode, 1216193439Ssam ic->ic_csa_newchan, ic->ic_csa_count, 1217193439Ssam csa->csa_mode, csa->csa_newchan, csa->csa_count); 1218193439Ssam ieee80211_csa_cancelswitch(ic); 1219193439Ssam } else { 1220193439Ssam if (csa->csa_count <= 1) 1221193439Ssam ieee80211_csa_completeswitch(ic); 1222193439Ssam else 1223193439Ssam ic->ic_csa_count = csa->csa_count; 1224193439Ssam } 1225193439Ssam } 1226193439Ssamdone: 1227193439Ssam IEEE80211_UNLOCK(ic); 1228193439Ssam} 1229193439Ssam 1230193439Ssam/* 1231178354Ssam * Return non-zero if a background scan may be continued: 1232178354Ssam * o bg scan is active 1233178354Ssam * o no channel switch is pending 1234178354Ssam * o there has not been any traffic recently 1235178354Ssam * 1236178354Ssam * Note we do not check if there is an administrative enable; 1237178354Ssam * this is only done to start the scan. We assume that any 1238178354Ssam * change in state will be accompanied by a request to cancel 1239178354Ssam * active scans which will otherwise cause this test to fail. 1240178354Ssam */ 1241178354Ssamstatic __inline int 1242178354Ssamcontbgscan(struct ieee80211vap *vap) 1243178354Ssam{ 1244178354Ssam struct ieee80211com *ic = vap->iv_ic; 1245178354Ssam 1246178354Ssam return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) && 1247178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1248178354Ssam vap->iv_state == IEEE80211_S_RUN && /* XXX? */ 1249178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1250178354Ssam} 1251178354Ssam 1252178354Ssam/* 1253178354Ssam * Return non-zero if a backgrond scan may be started: 1254178354Ssam * o bg scanning is administratively enabled 1255178354Ssam * o no channel switch is pending 1256178354Ssam * o we are not boosted on a dynamic turbo channel 1257178354Ssam * o there has not been a scan recently 1258178354Ssam * o there has not been any traffic recently 1259178354Ssam */ 1260178354Ssamstatic __inline int 1261178354Ssamstartbgscan(struct ieee80211vap *vap) 1262178354Ssam{ 1263178354Ssam struct ieee80211com *ic = vap->iv_ic; 1264178354Ssam 1265178354Ssam return ((vap->iv_flags & IEEE80211_F_BGSCAN) && 1266178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1267190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1268178354Ssam !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && 1269190391Ssam#endif 1270178354Ssam time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) && 1271178354Ssam time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1272178354Ssam} 1273178354Ssam 1274178354Ssamstatic void 1275178354Ssamsta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, 1276192468Ssam int subtype, int rssi, int nf) 1277178354Ssam{ 1278178354Ssam#define ISPROBE(_st) ((_st) == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1279178354Ssam#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP) 1280178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1281178354Ssam struct ieee80211com *ic = ni->ni_ic; 1282178354Ssam struct ieee80211_frame *wh; 1283178354Ssam uint8_t *frm, *efrm; 1284178354Ssam uint8_t *rates, *xrates, *wme, *htcap, *htinfo; 1285178354Ssam uint8_t rate; 1286178354Ssam 1287178354Ssam wh = mtod(m0, struct ieee80211_frame *); 1288178354Ssam frm = (uint8_t *)&wh[1]; 1289178354Ssam efrm = mtod(m0, uint8_t *) + m0->m_len; 1290178354Ssam switch (subtype) { 1291178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1292178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: { 1293178354Ssam struct ieee80211_scanparams scan; 1294178354Ssam /* 1295178354Ssam * We process beacon/probe response frames: 1296178354Ssam * o when scanning, or 1297178354Ssam * o station mode when associated (to collect state 1298191444Srpaulo * updates such as 802.11g slot time) 1299178354Ssam * Frames otherwise received are discarded. 1300178354Ssam */ 1301178354Ssam if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) { 1302178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1303178354Ssam return; 1304178354Ssam } 1305178354Ssam /* XXX probe response in sta mode when !scanning? */ 1306178354Ssam if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 1307178354Ssam return; 1308178354Ssam /* 1309178354Ssam * Count frame now that we know it's to be processed. 1310178354Ssam */ 1311178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1312178354Ssam vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1313178354Ssam IEEE80211_NODE_STAT(ni, rx_beacons); 1314178354Ssam } else 1315178354Ssam IEEE80211_NODE_STAT(ni, rx_proberesp); 1316178354Ssam /* 1317178354Ssam * When operating in station mode, check for state updates. 1318178354Ssam * Be careful to ignore beacons received while doing a 1319178354Ssam * background scan. We consider only 11g/WMM stuff right now. 1320178354Ssam */ 1321178354Ssam if (ni->ni_associd != 0 && 1322178354Ssam ((ic->ic_flags & IEEE80211_F_SCAN) == 0 || 1323178354Ssam IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) { 1324178354Ssam /* record tsf of last beacon */ 1325178354Ssam memcpy(ni->ni_tstamp.data, scan.tstamp, 1326178354Ssam sizeof(ni->ni_tstamp)); 1327178354Ssam /* count beacon frame for s/w bmiss handling */ 1328178354Ssam vap->iv_swbmiss_count++; 1329178354Ssam vap->iv_bmiss_count = 0; 1330178354Ssam if (ni->ni_erp != scan.erp) { 1331178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1332178354Ssam wh->i_addr2, 1333178354Ssam "erp change: was 0x%x, now 0x%x", 1334178354Ssam ni->ni_erp, scan.erp); 1335178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1336178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1337178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1338178354Ssam else 1339178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1340178354Ssam ni->ni_erp = scan.erp; 1341178354Ssam /* XXX statistic */ 1342178354Ssam /* XXX driver notification */ 1343178354Ssam } 1344178354Ssam if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) { 1345178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1346178354Ssam wh->i_addr2, 1347178354Ssam "capabilities change: was 0x%x, now 0x%x", 1348178354Ssam ni->ni_capinfo, scan.capinfo); 1349178354Ssam /* 1350178354Ssam * NB: we assume short preamble doesn't 1351178354Ssam * change dynamically 1352178354Ssam */ 1353178354Ssam ieee80211_set_shortslottime(ic, 1354178354Ssam IEEE80211_IS_CHAN_A(ic->ic_bsschan) || 1355178354Ssam (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1356178354Ssam ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME) 1357178354Ssam | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME); 1358178354Ssam /* XXX statistic */ 1359178354Ssam } 1360178354Ssam if (scan.wme != NULL && 1361178354Ssam (ni->ni_flags & IEEE80211_NODE_QOS) && 1362178354Ssam ieee80211_parse_wmeparams(vap, scan.wme, wh) > 0) 1363178354Ssam ieee80211_wme_updateparams(vap); 1364190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1365178354Ssam if (scan.ath != NULL) 1366178354Ssam ieee80211_parse_athparams(ni, scan.ath, wh); 1367190391Ssam#endif 1368183254Ssam if (scan.htcap != NULL && scan.htinfo != NULL && 1369193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1370183254Ssam ieee80211_ht_updateparams(ni, 1371183254Ssam scan.htcap, scan.htinfo); 1372178354Ssam /* XXX state changes? */ 1373178354Ssam } 1374227331Sadrian if (scan.quiet) 1375227331Sadrian ic->ic_set_quiet(ni, scan.quiet); 1376178354Ssam if (scan.tim != NULL) { 1377178354Ssam struct ieee80211_tim_ie *tim = 1378178354Ssam (struct ieee80211_tim_ie *) scan.tim; 1379178354Ssam#if 0 1380178354Ssam int aid = IEEE80211_AID(ni->ni_associd); 1381178354Ssam int ix = aid / NBBY; 1382178354Ssam int min = tim->tim_bitctl &~ 1; 1383178354Ssam int max = tim->tim_len + min - 4; 1384178354Ssam if ((tim->tim_bitctl&1) || 1385178354Ssam (min <= ix && ix <= max && 1386178354Ssam isset(tim->tim_bitmap - min, aid))) { 1387178354Ssam /* 1388178354Ssam * XXX Do not let bg scan kick off 1389178354Ssam * we are expecting data. 1390178354Ssam */ 1391178354Ssam ic->ic_lastdata = ticks; 1392178354Ssam ieee80211_sta_pwrsave(vap, 0); 1393178354Ssam } 1394178354Ssam#endif 1395178354Ssam ni->ni_dtim_count = tim->tim_count; 1396178354Ssam ni->ni_dtim_period = tim->tim_period; 1397178354Ssam } 1398193439Ssam if (scan.csa != NULL && 1399193439Ssam (vap->iv_flags & IEEE80211_F_DOTH)) 1400193439Ssam ieee80211_parse_csaparams(vap, scan.csa, wh); 1401193439Ssam else if (ic->ic_flags & IEEE80211_F_CSAPENDING) { 1402193439Ssam /* 1403193439Ssam * No CSA ie or 11h disabled, but a channel 1404193439Ssam * switch is pending; drop out so we aren't 1405193439Ssam * stuck in CSA state. If the AP really is 1406193439Ssam * moving we'll get a beacon miss and scan. 1407193439Ssam */ 1408193439Ssam IEEE80211_LOCK(ic); 1409193439Ssam ieee80211_csa_cancelswitch(ic); 1410193439Ssam IEEE80211_UNLOCK(ic); 1411193439Ssam } 1412178354Ssam /* 1413178354Ssam * If scanning, pass the info to the scan module. 1414178354Ssam * Otherwise, check if it's the right time to do 1415178354Ssam * a background scan. Background scanning must 1416178354Ssam * be enabled and we must not be operating in the 1417178354Ssam * turbo phase of dynamic turbo mode. Then, 1418178354Ssam * it's been a while since the last background 1419178354Ssam * scan and if no data frames have come through 1420178354Ssam * recently, kick off a scan. Note that this 1421178354Ssam * is the mechanism by which a background scan 1422178354Ssam * is started _and_ continued each time we 1423178354Ssam * return on-channel to receive a beacon from 1424178354Ssam * our ap. 1425178354Ssam */ 1426178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1427178354Ssam ieee80211_add_scan(vap, &scan, wh, 1428192468Ssam subtype, rssi, nf); 1429178354Ssam } else if (contbgscan(vap)) { 1430178354Ssam ieee80211_bg_scan(vap, 0); 1431178354Ssam } else if (startbgscan(vap)) { 1432178354Ssam vap->iv_stats.is_scan_bg++; 1433178354Ssam#if 0 1434178354Ssam /* wakeup if we are sleeing */ 1435178354Ssam ieee80211_set_pwrsave(vap, 0); 1436178354Ssam#endif 1437178354Ssam ieee80211_bg_scan(vap, 0); 1438178354Ssam } 1439178354Ssam return; 1440178354Ssam } 1441178354Ssam /* 1442178354Ssam * If scanning, just pass information to the scan module. 1443178354Ssam */ 1444178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1445178354Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1446178354Ssam /* 1447178354Ssam * Actively scanning a channel marked passive; 1448178354Ssam * send a probe request now that we know there 1449178354Ssam * is 802.11 traffic present. 1450178354Ssam * 1451178354Ssam * XXX check if the beacon we recv'd gives 1452178354Ssam * us what we need and suppress the probe req 1453178354Ssam */ 1454178354Ssam ieee80211_probe_curchan(vap, 1); 1455178354Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1456178354Ssam } 1457192468Ssam ieee80211_add_scan(vap, &scan, wh, subtype, rssi, nf); 1458178354Ssam return; 1459178354Ssam } 1460178354Ssam break; 1461178354Ssam } 1462178354Ssam 1463178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: { 1464178354Ssam uint16_t algo, seq, status; 1465178354Ssam /* 1466178354Ssam * auth frame format 1467178354Ssam * [2] algorithm 1468178354Ssam * [2] sequence 1469178354Ssam * [2] status 1470178354Ssam * [tlv*] challenge 1471178354Ssam */ 1472178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1473178354Ssam algo = le16toh(*(uint16_t *)frm); 1474178354Ssam seq = le16toh(*(uint16_t *)(frm + 2)); 1475178354Ssam status = le16toh(*(uint16_t *)(frm + 4)); 1476178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, 1477178354Ssam "recv auth frame with algorithm %d seq %d", algo, seq); 1478178354Ssam 1479178354Ssam if (vap->iv_flags & IEEE80211_F_COUNTERM) { 1480178354Ssam IEEE80211_DISCARD(vap, 1481178354Ssam IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, 1482178354Ssam wh, "auth", "%s", "TKIP countermeasures enabled"); 1483178354Ssam vap->iv_stats.is_rx_auth_countermeasures++; 1484178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 1485178354Ssam ieee80211_send_error(ni, wh->i_addr2, 1486178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1487178354Ssam IEEE80211_REASON_MIC_FAILURE); 1488178354Ssam } 1489178354Ssam return; 1490178354Ssam } 1491178354Ssam if (algo == IEEE80211_AUTH_ALG_SHARED) 1492192468Ssam sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, 1493192468Ssam seq, status); 1494178354Ssam else if (algo == IEEE80211_AUTH_ALG_OPEN) 1495192468Ssam sta_auth_open(ni, wh, rssi, nf, seq, status); 1496178354Ssam else { 1497178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1498178354Ssam wh, "auth", "unsupported alg %d", algo); 1499178354Ssam vap->iv_stats.is_rx_auth_unsupported++; 1500178354Ssam return; 1501178354Ssam } 1502178354Ssam break; 1503178354Ssam } 1504178354Ssam 1505178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1506178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: { 1507178354Ssam uint16_t capinfo, associd; 1508178354Ssam uint16_t status; 1509178354Ssam 1510178354Ssam if (vap->iv_state != IEEE80211_S_ASSOC) { 1511178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1512178354Ssam return; 1513178354Ssam } 1514178354Ssam 1515178354Ssam /* 1516178354Ssam * asresp frame format 1517178354Ssam * [2] capability information 1518178354Ssam * [2] status 1519178354Ssam * [2] association ID 1520178354Ssam * [tlv] supported rates 1521178354Ssam * [tlv] extended supported rates 1522178354Ssam * [tlv] WME 1523178354Ssam * [tlv] HT capabilities 1524178354Ssam * [tlv] HT info 1525178354Ssam */ 1526178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1527178354Ssam ni = vap->iv_bss; 1528178354Ssam capinfo = le16toh(*(uint16_t *)frm); 1529178354Ssam frm += 2; 1530178354Ssam status = le16toh(*(uint16_t *)frm); 1531178354Ssam frm += 2; 1532178354Ssam if (status != 0) { 1533178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1534178354Ssam wh->i_addr2, "%sassoc failed (reason %d)", 1535178354Ssam ISREASSOC(subtype) ? "re" : "", status); 1536178354Ssam vap->iv_stats.is_rx_auth_fail++; /* XXX */ 1537178354Ssam return; 1538178354Ssam } 1539178354Ssam associd = le16toh(*(uint16_t *)frm); 1540178354Ssam frm += 2; 1541178354Ssam 1542178354Ssam rates = xrates = wme = htcap = htinfo = NULL; 1543178354Ssam while (efrm - frm > 1) { 1544178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1545178354Ssam switch (*frm) { 1546178354Ssam case IEEE80211_ELEMID_RATES: 1547178354Ssam rates = frm; 1548178354Ssam break; 1549178354Ssam case IEEE80211_ELEMID_XRATES: 1550178354Ssam xrates = frm; 1551178354Ssam break; 1552178354Ssam case IEEE80211_ELEMID_HTCAP: 1553178354Ssam htcap = frm; 1554178354Ssam break; 1555178354Ssam case IEEE80211_ELEMID_HTINFO: 1556178354Ssam htinfo = frm; 1557178354Ssam break; 1558178354Ssam case IEEE80211_ELEMID_VENDOR: 1559178354Ssam if (iswmeoui(frm)) 1560178354Ssam wme = frm; 1561193655Ssam else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { 1562178354Ssam /* 1563178354Ssam * Accept pre-draft HT ie's if the 1564178354Ssam * standard ones have not been seen. 1565178354Ssam */ 1566178354Ssam if (ishtcapoui(frm)) { 1567178354Ssam if (htcap == NULL) 1568178354Ssam htcap = frm; 1569178354Ssam } else if (ishtinfooui(frm)) { 1570178354Ssam if (htinfo == NULL) 1571219603Sbschmidt htinfo = frm; 1572178354Ssam } 1573178354Ssam } 1574178354Ssam /* XXX Atheros OUI support */ 1575178354Ssam break; 1576178354Ssam } 1577178354Ssam frm += frm[1] + 2; 1578178354Ssam } 1579178354Ssam 1580178354Ssam IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1581178354Ssam if (xrates != NULL) 1582178354Ssam IEEE80211_VERIFY_ELEMENT(xrates, 1583178354Ssam IEEE80211_RATE_MAXSIZE - rates[1], return); 1584178354Ssam rate = ieee80211_setup_rates(ni, rates, xrates, 1585178354Ssam IEEE80211_F_JOIN | 1586178354Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1587178354Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1588178354Ssam if (rate & IEEE80211_RATE_BASIC) { 1589178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1590178354Ssam wh->i_addr2, 1591178354Ssam "%sassoc failed (rate set mismatch)", 1592178354Ssam ISREASSOC(subtype) ? "re" : ""); 1593178354Ssam vap->iv_stats.is_rx_assoc_norate++; 1594178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1595178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1596178354Ssam return; 1597178354Ssam } 1598178354Ssam 1599178354Ssam ni->ni_capinfo = capinfo; 1600178354Ssam ni->ni_associd = associd; 1601178354Ssam if (ni->ni_jointime == 0) 1602178354Ssam ni->ni_jointime = time_uptime; 1603178354Ssam if (wme != NULL && 1604178354Ssam ieee80211_parse_wmeparams(vap, wme, wh) >= 0) { 1605178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1606178354Ssam ieee80211_wme_updateparams(vap); 1607178354Ssam } else 1608178354Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1609178354Ssam /* 1610178354Ssam * Setup HT state according to the negotiation. 1611178354Ssam * 1612178354Ssam * NB: shouldn't need to check if HT use is enabled but some 1613178354Ssam * ap's send back HT ie's even when we don't indicate we 1614178354Ssam * are HT capable in our AssocReq. 1615178354Ssam */ 1616178354Ssam if (htcap != NULL && htinfo != NULL && 1617193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1618183254Ssam ieee80211_ht_node_init(ni); 1619183254Ssam ieee80211_ht_updateparams(ni, htcap, htinfo); 1620178354Ssam ieee80211_setup_htrates(ni, htcap, 1621178354Ssam IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 1622178354Ssam ieee80211_setup_basic_htrates(ni, htinfo); 1623193966Ssam ieee80211_node_setuptxparms(ni); 1624214894Sbschmidt ieee80211_ratectl_node_init(ni); 1625190579Ssam } else { 1626190579Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1627190579Ssam if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_ATH)) 1628190579Ssam ieee80211_ff_node_init(ni); 1629190579Ssam#endif 1630178354Ssam } 1631178354Ssam /* 1632178354Ssam * Configure state now that we are associated. 1633178354Ssam * 1634178354Ssam * XXX may need different/additional driver callbacks? 1635178354Ssam */ 1636178354Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1637178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) { 1638178354Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 1639178354Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 1640178354Ssam } else { 1641178354Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 1642178354Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 1643178354Ssam } 1644178354Ssam ieee80211_set_shortslottime(ic, 1645178354Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1646178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1647178354Ssam /* 1648178354Ssam * Honor ERP protection. 1649178354Ssam * 1650178354Ssam * NB: ni_erp should zero for non-11g operation. 1651178354Ssam */ 1652178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1653178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1654178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1655178354Ssam else 1656178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1657178354Ssam IEEE80211_NOTE_MAC(vap, 1658178354Ssam IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2, 1659183256Ssam "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 1660178354Ssam ISREASSOC(subtype) ? "re" : "", 1661178354Ssam IEEE80211_NODE_AID(ni), 1662178354Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 1663178354Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 1664178354Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "", 1665178354Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 1666178354Ssam ni->ni_flags & IEEE80211_NODE_HT ? 1667182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 1668178354Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 1669183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 1670183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 1671183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 1672178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 1673178354Ssam ", fast-frames" : "", 1674178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 1675178354Ssam ", turbo" : "" 1676178354Ssam ); 1677178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, subtype); 1678178354Ssam break; 1679178354Ssam } 1680178354Ssam 1681178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: { 1682178354Ssam uint16_t reason; 1683178354Ssam 1684178354Ssam if (vap->iv_state == IEEE80211_S_SCAN) { 1685178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1686178354Ssam return; 1687178354Ssam } 1688178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1689178354Ssam /* NB: can happen when in promiscuous mode */ 1690178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1691178354Ssam break; 1692178354Ssam } 1693178354Ssam 1694178354Ssam /* 1695178354Ssam * deauth frame format 1696178354Ssam * [2] reason 1697178354Ssam */ 1698178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1699178354Ssam reason = le16toh(*(uint16_t *)frm); 1700178354Ssam 1701178354Ssam vap->iv_stats.is_rx_deauth++; 1702178354Ssam vap->iv_stats.is_rx_deauth_code = reason; 1703178354Ssam IEEE80211_NODE_STAT(ni, rx_deauth); 1704178354Ssam 1705178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, 1706178354Ssam "recv deauthenticate (reason %d)", reason); 1707178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 1708178354Ssam (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH); 1709178354Ssam break; 1710178354Ssam } 1711178354Ssam 1712178354Ssam case IEEE80211_FC0_SUBTYPE_DISASSOC: { 1713178354Ssam uint16_t reason; 1714178354Ssam 1715178354Ssam if (vap->iv_state != IEEE80211_S_RUN && 1716178354Ssam vap->iv_state != IEEE80211_S_ASSOC && 1717178354Ssam vap->iv_state != IEEE80211_S_AUTH) { 1718178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1719178354Ssam return; 1720178354Ssam } 1721178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1722178354Ssam /* NB: can happen when in promiscuous mode */ 1723178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1724178354Ssam break; 1725178354Ssam } 1726178354Ssam 1727178354Ssam /* 1728178354Ssam * disassoc frame format 1729178354Ssam * [2] reason 1730178354Ssam */ 1731178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1732178354Ssam reason = le16toh(*(uint16_t *)frm); 1733178354Ssam 1734178354Ssam vap->iv_stats.is_rx_disassoc++; 1735178354Ssam vap->iv_stats.is_rx_disassoc_code = reason; 1736178354Ssam IEEE80211_NODE_STAT(ni, rx_disassoc); 1737178354Ssam 1738178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 1739178354Ssam "recv disassociate (reason %d)", reason); 1740178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1741178354Ssam break; 1742178354Ssam } 1743178354Ssam 1744178354Ssam case IEEE80211_FC0_SUBTYPE_ACTION: 1745218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1746218958Sbschmidt if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1747218958Sbschmidt !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1748218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1749218958Sbschmidt wh, NULL, "%s", "not for us"); 1750218958Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 1751218958Sbschmidt } else if (vap->iv_state != IEEE80211_S_RUN) { 1752218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1753218927Sbschmidt wh, NULL, "wrong state %s", 1754218927Sbschmidt ieee80211_state_name[vap->iv_state]); 1755178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1756218958Sbschmidt } else { 1757218958Sbschmidt if (ieee80211_parse_action(ni, m0) == 0) 1758218958Sbschmidt (void)ic->ic_recv_action(ni, wh, frm, efrm); 1759218927Sbschmidt } 1760178354Ssam break; 1761178354Ssam 1762178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1763178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1764218927Sbschmidt case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1765218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ATIM: 1766218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1767218927Sbschmidt wh, NULL, "%s", "not handled"); 1768178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1769218927Sbschmidt break; 1770218927Sbschmidt 1771178354Ssam default: 1772178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1773218927Sbschmidt wh, "mgt", "subtype 0x%x not handled", subtype); 1774178354Ssam vap->iv_stats.is_rx_badsubtype++; 1775178354Ssam break; 1776178354Ssam } 1777178354Ssam#undef ISREASSOC 1778178354Ssam#undef ISPROBE 1779178354Ssam} 1780191546Ssam 1781191546Ssamstatic void 1782205277Srpaulosta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1783191546Ssam{ 1784205277Srpaulo switch (subtype) { 1785205277Srpaulo case IEEE80211_FC0_SUBTYPE_BAR: 1786205277Srpaulo ieee80211_recv_bar(ni, m); 1787205277Srpaulo break; 1788205277Srpaulo } 1789191546Ssam} 1790