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: stable/11/sys/net80211/ieee80211_sta.c 344969 2019-03-09 12:54:10Z avos $"); 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> 53227339Sadrian#include <net/if_dl.h> 54227339Sadrian#include <net/if_var.h> 55178354Ssam#include <net/ethernet.h> 56178354Ssam 57178354Ssam#include <net/bpf.h> 58178354Ssam 59178354Ssam#include <net80211/ieee80211_var.h> 60178354Ssam#include <net80211/ieee80211_sta.h> 61178354Ssam#include <net80211/ieee80211_input.h> 62190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 63190391Ssam#include <net80211/ieee80211_superg.h> 64190391Ssam#endif 65211295Sbschmidt#include <net80211/ieee80211_ratectl.h> 66244060Sadrian#include <net80211/ieee80211_sta.h> 67178354Ssam 68178354Ssam#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 69178354Ssam 70178354Ssamstatic void sta_vattach(struct ieee80211vap *); 71178354Ssamstatic void sta_beacon_miss(struct ieee80211vap *); 72178354Ssamstatic int sta_newstate(struct ieee80211vap *, enum ieee80211_state, int); 73283535Sadrianstatic int sta_input(struct ieee80211_node *, struct mbuf *, 74283535Sadrian const struct ieee80211_rx_stats *, int, int); 75178354Ssamstatic void sta_recv_mgmt(struct ieee80211_node *, struct mbuf *, 76283535Sadrian int subtype, const struct ieee80211_rx_stats *, int rssi, int nf); 77191546Ssamstatic void sta_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); 78178354Ssam 79178354Ssamvoid 80178354Ssamieee80211_sta_attach(struct ieee80211com *ic) 81178354Ssam{ 82178354Ssam ic->ic_vattach[IEEE80211_M_STA] = sta_vattach; 83178354Ssam} 84178354Ssam 85178354Ssamvoid 86178354Ssamieee80211_sta_detach(struct ieee80211com *ic) 87178354Ssam{ 88178354Ssam} 89178354Ssam 90178354Ssamstatic void 91178354Ssamsta_vdetach(struct ieee80211vap *vap) 92178354Ssam{ 93178354Ssam} 94178354Ssam 95178354Ssamstatic void 96178354Ssamsta_vattach(struct ieee80211vap *vap) 97178354Ssam{ 98178354Ssam vap->iv_newstate = sta_newstate; 99178354Ssam vap->iv_input = sta_input; 100178354Ssam vap->iv_recv_mgmt = sta_recv_mgmt; 101191546Ssam vap->iv_recv_ctl = sta_recv_ctl; 102178354Ssam vap->iv_opdetach = sta_vdetach; 103178354Ssam vap->iv_bmiss = sta_beacon_miss; 104178354Ssam} 105178354Ssam 106178354Ssam/* 107178354Ssam * Handle a beacon miss event. The common code filters out 108178354Ssam * spurious events that can happen when scanning and/or before 109178354Ssam * reaching RUN state. 110178354Ssam */ 111178354Ssamstatic void 112178354Ssamsta_beacon_miss(struct ieee80211vap *vap) 113178354Ssam{ 114193439Ssam struct ieee80211com *ic = vap->iv_ic; 115178354Ssam 116225913Sadrian IEEE80211_LOCK_ASSERT(ic); 117225913Sadrian 118193439Ssam KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning")); 119193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 120193439Ssam ("wrong state %s", ieee80211_state_name[vap->iv_state])); 121178354Ssam 122193439Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, 123193439Ssam "beacon miss, mode %s state %s\n", 124193439Ssam ieee80211_opmode_name[vap->iv_opmode], 125193439Ssam ieee80211_state_name[vap->iv_state]); 126193439Ssam 127193439Ssam if (vap->iv_state == IEEE80211_S_CSA) { 128193439Ssam /* 129193439Ssam * A Channel Switch is pending; assume we missed the 130193439Ssam * beacon that would've completed the process and just 131193439Ssam * force the switch. If we made a mistake we'll not 132193439Ssam * find the AP on the new channel and fall back to a 133193439Ssam * normal scan. 134193439Ssam */ 135193439Ssam ieee80211_csa_completeswitch(ic); 136193439Ssam return; 137193439Ssam } 138178354Ssam if (++vap->iv_bmiss_count < vap->iv_bmiss_max) { 139178354Ssam /* 140178354Ssam * Send a directed probe req before falling back to a 141178354Ssam * scan; if we receive a response ic_bmiss_count will 142178354Ssam * be reset. Some cards mistakenly report beacon miss 143178354Ssam * so this avoids the expensive scan if the ap is 144178354Ssam * still there. 145178354Ssam */ 146178354Ssam ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr, 147178354Ssam vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid, 148178354Ssam vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); 149178354Ssam return; 150178354Ssam } 151205140Sweongyo 152205140Sweongyo callout_stop(&vap->iv_swbmiss); 153178354Ssam vap->iv_bmiss_count = 0; 154178354Ssam vap->iv_stats.is_beacon_miss++; 155178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 156190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 157190402Ssam 158178354Ssam /* 159178354Ssam * If we receive a beacon miss interrupt when using 160178354Ssam * dynamic turbo, attempt to switch modes before 161178354Ssam * reassociating. 162178354Ssam */ 163178354Ssam if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP)) 164178354Ssam ieee80211_dturbo_switch(vap, 165178354Ssam ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO); 166190391Ssam#endif 167178354Ssam /* 168178354Ssam * Try to reassociate before scanning for a new ap. 169178354Ssam */ 170178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 171178354Ssam } else { 172178354Ssam /* 173178354Ssam * Somebody else is controlling state changes (e.g. 174178354Ssam * a user-mode app) don't do anything that would 175178354Ssam * confuse them; just drop into scan mode so they'll 176178354Ssam * notified of the state change and given control. 177178354Ssam */ 178178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); 179178354Ssam } 180178354Ssam} 181178354Ssam 182178354Ssam/* 183178354Ssam * Handle deauth with reason. We retry only for 184178354Ssam * the cases where we might succeed. Otherwise 185178354Ssam * we downgrade the ap and scan. 186178354Ssam */ 187178354Ssamstatic void 188178354Ssamsta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason) 189178354Ssam{ 190178354Ssam switch (reason) { 191178354Ssam case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */ 192178354Ssam case IEEE80211_STATUS_TIMEOUT: 193178354Ssam case IEEE80211_REASON_ASSOC_EXPIRE: 194178354Ssam case IEEE80211_REASON_NOT_AUTHED: 195178354Ssam case IEEE80211_REASON_NOT_ASSOCED: 196178354Ssam case IEEE80211_REASON_ASSOC_LEAVE: 197178354Ssam case IEEE80211_REASON_ASSOC_NOT_AUTHED: 198178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); 199178354Ssam break; 200178354Ssam default: 201178354Ssam ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason); 202178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 203178354Ssam ieee80211_check_scan_current(vap); 204178354Ssam break; 205178354Ssam } 206178354Ssam} 207178354Ssam 208297164Savosstatic void 209297164Savossta_swbmiss_start(struct ieee80211vap *vap) 210297164Savos{ 211297164Savos 212297164Savos if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) { 213297164Savos /* 214297164Savos * Start s/w beacon miss timer for devices w/o 215297164Savos * hardware support. We fudge a bit here since 216297164Savos * we're doing this in software. 217297164Savos */ 218297164Savos vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS( 219297164Savos 2 * vap->iv_bmissthreshold * vap->iv_bss->ni_intval); 220297164Savos vap->iv_swbmiss_count = 0; 221297164Savos callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, 222297164Savos ieee80211_swbmiss, vap); 223297164Savos } 224297164Savos} 225297164Savos 226178354Ssam/* 227178354Ssam * IEEE80211_M_STA vap state machine handler. 228178354Ssam * This routine handles the main states in the 802.11 protocol. 229178354Ssam */ 230178354Ssamstatic int 231178354Ssamsta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 232178354Ssam{ 233178354Ssam struct ieee80211com *ic = vap->iv_ic; 234178354Ssam struct ieee80211_node *ni; 235178354Ssam enum ieee80211_state ostate; 236178354Ssam 237178354Ssam IEEE80211_LOCK_ASSERT(ic); 238178354Ssam 239178354Ssam ostate = vap->iv_state; 240178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 241178354Ssam __func__, ieee80211_state_name[ostate], 242178354Ssam ieee80211_state_name[nstate], arg); 243178354Ssam vap->iv_state = nstate; /* state transition */ 244178354Ssam callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */ 245178354Ssam if (ostate != IEEE80211_S_SCAN) 246178354Ssam ieee80211_cancel_scan(vap); /* background scan */ 247178354Ssam ni = vap->iv_bss; /* NB: no reference held */ 248178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) 249178354Ssam callout_stop(&vap->iv_swbmiss); 250178354Ssam switch (nstate) { 251178354Ssam case IEEE80211_S_INIT: 252178354Ssam switch (ostate) { 253178354Ssam case IEEE80211_S_SLEEP: 254178354Ssam /* XXX wakeup */ 255264855Sadrian /* XXX driver hook to wakeup the hardware? */ 256178354Ssam case IEEE80211_S_RUN: 257178354Ssam IEEE80211_SEND_MGMT(ni, 258178354Ssam IEEE80211_FC0_SUBTYPE_DISASSOC, 259178354Ssam IEEE80211_REASON_ASSOC_LEAVE); 260178354Ssam ieee80211_sta_leave(ni); 261178354Ssam break; 262178354Ssam case IEEE80211_S_ASSOC: 263178354Ssam IEEE80211_SEND_MGMT(ni, 264178354Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 265178354Ssam IEEE80211_REASON_AUTH_LEAVE); 266178354Ssam break; 267178354Ssam case IEEE80211_S_SCAN: 268178354Ssam ieee80211_cancel_scan(vap); 269178354Ssam break; 270178354Ssam default: 271296355Savos break; 272178354Ssam } 273178354Ssam if (ostate != IEEE80211_S_INIT) { 274178354Ssam /* NB: optimize INIT -> INIT case */ 275178354Ssam ieee80211_reset_bss(vap); 276178354Ssam } 277178354Ssam if (vap->iv_auth->ia_detach != NULL) 278178354Ssam vap->iv_auth->ia_detach(vap); 279178354Ssam break; 280178354Ssam case IEEE80211_S_SCAN: 281178354Ssam switch (ostate) { 282178354Ssam case IEEE80211_S_INIT: 283178354Ssam /* 284178354Ssam * Initiate a scan. We can come here as a result 285178354Ssam * of an IEEE80211_IOC_SCAN_REQ too in which case 286178354Ssam * the vap will be marked with IEEE80211_FEXT_SCANREQ 287178354Ssam * and the scan request parameters will be present 288178354Ssam * in iv_scanreq. Otherwise we do the default. 289178354Ssam */ 290178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 291178354Ssam ieee80211_check_scan(vap, 292178354Ssam vap->iv_scanreq_flags, 293178354Ssam vap->iv_scanreq_duration, 294178354Ssam vap->iv_scanreq_mindwell, 295178354Ssam vap->iv_scanreq_maxdwell, 296178354Ssam vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 297178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 298178354Ssam } else 299178354Ssam ieee80211_check_scan_current(vap); 300178354Ssam break; 301178354Ssam case IEEE80211_S_SCAN: 302178354Ssam case IEEE80211_S_AUTH: 303178354Ssam case IEEE80211_S_ASSOC: 304178354Ssam /* 305178354Ssam * These can happen either because of a timeout 306178354Ssam * on an assoc/auth response or because of a 307178354Ssam * change in state that requires a reset. For 308178354Ssam * the former we're called with a non-zero arg 309178354Ssam * that is the cause for the failure; pass this 310178354Ssam * to the scan code so it can update state. 311178354Ssam * Otherwise trigger a new scan unless we're in 312178354Ssam * manual roaming mode in which case an application 313178354Ssam * must issue an explicit scan request. 314178354Ssam */ 315178354Ssam if (arg != 0) 316178354Ssam ieee80211_scan_assoc_fail(vap, 317178354Ssam vap->iv_bss->ni_macaddr, arg); 318178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 319178354Ssam ieee80211_check_scan_current(vap); 320178354Ssam break; 321264906Sadrian case IEEE80211_S_SLEEP: /* beacon miss */ 322264906Sadrian /* 323264906Sadrian * XXX if in sleep we need to wakeup the hardware. 324264906Sadrian */ 325264906Sadrian /* FALLTHROUGH */ 326178354Ssam case IEEE80211_S_RUN: /* beacon miss */ 327178354Ssam /* 328178354Ssam * Beacon miss. Notify user space and if not 329178354Ssam * under control of a user application (roaming 330178354Ssam * manual) kick off a scan to re-connect. 331178354Ssam */ 332264906Sadrian 333178354Ssam ieee80211_sta_leave(ni); 334178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 335178354Ssam ieee80211_check_scan_current(vap); 336178354Ssam break; 337178354Ssam default: 338178354Ssam goto invalid; 339178354Ssam } 340178354Ssam break; 341178354Ssam case IEEE80211_S_AUTH: 342178354Ssam switch (ostate) { 343178354Ssam case IEEE80211_S_INIT: 344178354Ssam case IEEE80211_S_SCAN: 345178354Ssam IEEE80211_SEND_MGMT(ni, 346178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 347178354Ssam break; 348178354Ssam case IEEE80211_S_AUTH: 349178354Ssam case IEEE80211_S_ASSOC: 350178354Ssam switch (arg & 0xff) { 351178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 352178354Ssam /* ??? */ 353178354Ssam IEEE80211_SEND_MGMT(ni, 354178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 355178354Ssam break; 356178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 357178354Ssam sta_authretry(vap, ni, arg>>8); 358178354Ssam break; 359178354Ssam } 360178354Ssam break; 361297162Savos case IEEE80211_S_SLEEP: 362178354Ssam case IEEE80211_S_RUN: 363178354Ssam switch (arg & 0xff) { 364178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: 365178354Ssam IEEE80211_SEND_MGMT(ni, 366178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 2); 367297162Savos vap->iv_state = IEEE80211_S_RUN; /* stay RUN */ 368178354Ssam break; 369178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 370178354Ssam ieee80211_sta_leave(ni); 371178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 372178354Ssam /* try to reauth */ 373178354Ssam IEEE80211_SEND_MGMT(ni, 374178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1); 375178354Ssam } 376178354Ssam break; 377178354Ssam } 378178354Ssam break; 379178354Ssam default: 380178354Ssam goto invalid; 381178354Ssam } 382178354Ssam break; 383178354Ssam case IEEE80211_S_ASSOC: 384178354Ssam switch (ostate) { 385178354Ssam case IEEE80211_S_AUTH: 386178354Ssam case IEEE80211_S_ASSOC: 387178354Ssam IEEE80211_SEND_MGMT(ni, 388178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 389178354Ssam break; 390178354Ssam case IEEE80211_S_SLEEP: /* cannot happen */ 391178354Ssam case IEEE80211_S_RUN: 392178354Ssam ieee80211_sta_leave(ni); 393178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { 394178354Ssam IEEE80211_SEND_MGMT(ni, arg ? 395178354Ssam IEEE80211_FC0_SUBTYPE_REASSOC_REQ : 396178354Ssam IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); 397178354Ssam } 398178354Ssam break; 399178354Ssam default: 400178354Ssam goto invalid; 401178354Ssam } 402178354Ssam break; 403178354Ssam case IEEE80211_S_RUN: 404178354Ssam if (vap->iv_flags & IEEE80211_F_WPA) { 405178354Ssam /* XXX validate prerequisites */ 406178354Ssam } 407178354Ssam switch (ostate) { 408178354Ssam case IEEE80211_S_RUN: 409193439Ssam case IEEE80211_S_CSA: 410178354Ssam break; 411178354Ssam case IEEE80211_S_AUTH: /* when join is done in fw */ 412178354Ssam case IEEE80211_S_ASSOC: 413178354Ssam#ifdef IEEE80211_DEBUG 414178354Ssam if (ieee80211_msg_debug(vap)) { 415178354Ssam ieee80211_note(vap, "%s with %s ssid ", 416178354Ssam (vap->iv_opmode == IEEE80211_M_STA ? 417178354Ssam "associated" : "synchronized"), 418178354Ssam ether_sprintf(ni->ni_bssid)); 419178354Ssam ieee80211_print_essid(vap->iv_bss->ni_essid, 420178354Ssam ni->ni_esslen); 421178354Ssam /* XXX MCS/HT */ 422178354Ssam printf(" channel %d start %uMb\n", 423178354Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 424178354Ssam IEEE80211_RATE2MBS(ni->ni_txrate)); 425178354Ssam } 426178354Ssam#endif 427178354Ssam ieee80211_scan_assoc_success(vap, ni->ni_macaddr); 428178354Ssam ieee80211_notify_node_join(ni, 429178354Ssam arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 430178354Ssam break; 431178354Ssam case IEEE80211_S_SLEEP: 432264855Sadrian /* Wake up from sleep */ 433241138Sadrian vap->iv_sta_ps(vap, 0); 434178354Ssam break; 435178354Ssam default: 436178354Ssam goto invalid; 437178354Ssam } 438178354Ssam ieee80211_sync_curchan(ic); 439297164Savos if (ostate != IEEE80211_S_RUN) 440297164Savos sta_swbmiss_start(vap); 441178354Ssam /* 442178354Ssam * When 802.1x is not in use mark the port authorized 443178354Ssam * at this point so traffic can flow. 444178354Ssam */ 445178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 446178354Ssam ieee80211_node_authorize(ni); 447184345Ssam /* 448184345Ssam * Fake association when joining an existing bss. 449264855Sadrian * 450264855Sadrian * Don't do this if we're doing SLEEP->RUN. 451184345Ssam */ 452264855Sadrian if (ic->ic_newassoc != NULL && ostate != IEEE80211_S_SLEEP) 453264855Sadrian ic->ic_newassoc(vap->iv_bss, (ostate != IEEE80211_S_RUN)); 454178354Ssam break; 455193439Ssam case IEEE80211_S_CSA: 456193439Ssam if (ostate != IEEE80211_S_RUN) 457193439Ssam goto invalid; 458193439Ssam break; 459178354Ssam case IEEE80211_S_SLEEP: 460297164Savos sta_swbmiss_start(vap); 461241138Sadrian vap->iv_sta_ps(vap, 1); 462178354Ssam break; 463178354Ssam default: 464178354Ssam invalid: 465184268Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 466184268Ssam "%s: unexpected state transition %s -> %s\n", __func__, 467178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 468178354Ssam break; 469178354Ssam } 470178354Ssam return 0; 471178354Ssam} 472178354Ssam 473178354Ssam/* 474178354Ssam * Return non-zero if the frame is an echo of a multicast 475178354Ssam * frame sent by ourself. The dir is known to be DSTODS. 476178354Ssam */ 477178354Ssamstatic __inline int 478178354Ssamisdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 479178354Ssam{ 480178354Ssam#define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh) 481178354Ssam#define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh) 482178354Ssam const uint8_t *sa; 483178354Ssam 484178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 485178354Ssam 486178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) 487178354Ssam return 0; 488178354Ssam sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4; 489178354Ssam return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr); 490178354Ssam#undef WH4 491178354Ssam#undef QWH4 492178354Ssam} 493178354Ssam 494178354Ssam/* 495178354Ssam * Return non-zero if the frame is an echo of a multicast 496178354Ssam * frame sent by ourself. The dir is known to be FROMDS. 497178354Ssam */ 498178354Ssamstatic __inline int 499178354Ssamisfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) 500178354Ssam{ 501178354Ssam KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); 502178354Ssam 503178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) 504178354Ssam return 0; 505178354Ssam return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); 506178354Ssam} 507178354Ssam 508178354Ssam/* 509178354Ssam * Decide if a received management frame should be 510178354Ssam * printed when debugging is enabled. This filters some 511178354Ssam * of the less interesting frames that come frequently 512178354Ssam * (e.g. beacons). 513178354Ssam */ 514178354Ssamstatic __inline int 515178354Ssamdoprint(struct ieee80211vap *vap, int subtype) 516178354Ssam{ 517178354Ssam switch (subtype) { 518178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: 519178354Ssam return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); 520178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 521178354Ssam return 0; 522178354Ssam } 523178354Ssam return 1; 524178354Ssam} 525178354Ssam 526178354Ssam/* 527178354Ssam * Process a received frame. The node associated with the sender 528178354Ssam * should be supplied. If nothing was found in the node table then 529178354Ssam * the caller is assumed to supply a reference to iv_bss instead. 530178354Ssam * The RSSI and a timestamp are also supplied. The RSSI data is used 531178354Ssam * during AP scanning to select a AP to associate with; it can have 532178354Ssam * any units so long as values have consistent units and higher values 533178354Ssam * mean ``better signal''. The receive timestamp is currently not used 534178354Ssam * by the 802.11 layer. 535178354Ssam */ 536178354Ssamstatic int 537283535Sadriansta_input(struct ieee80211_node *ni, struct mbuf *m, 538283535Sadrian const struct ieee80211_rx_stats *rxs, int rssi, int nf) 539178354Ssam{ 540178354Ssam struct ieee80211vap *vap = ni->ni_vap; 541178354Ssam struct ieee80211com *ic = ni->ni_ic; 542178354Ssam struct ifnet *ifp = vap->iv_ifp; 543178354Ssam struct ieee80211_frame *wh; 544178354Ssam struct ieee80211_key *key; 545178354Ssam struct ether_header *eh; 546203422Srpaulo int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ 547178354Ssam uint8_t dir, type, subtype, qos; 548178354Ssam uint8_t *bssid; 549178354Ssam 550183247Ssam if (m->m_flags & M_AMPDU_MPDU) { 551178354Ssam /* 552178354Ssam * Fastpath for A-MPDU reorder q resubmission. Frames 553183247Ssam * w/ M_AMPDU_MPDU marked have already passed through 554183247Ssam * here but were received out of order and been held on 555183247Ssam * the reorder queue. When resubmitted they are marked 556183247Ssam * with the M_AMPDU_MPDU flag and we can bypass most of 557183247Ssam * the normal processing. 558178354Ssam */ 559178354Ssam wh = mtod(m, struct ieee80211_frame *); 560178354Ssam type = IEEE80211_FC0_TYPE_DATA; 561178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 562178354Ssam subtype = IEEE80211_FC0_SUBTYPE_QOS; 563178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ 564178354Ssam goto resubmit_ampdu; 565178354Ssam } 566178354Ssam 567178354Ssam KASSERT(ni != NULL, ("null node")); 568178354Ssam ni->ni_inact = ni->ni_inact_reload; 569178354Ssam 570178354Ssam type = -1; /* undefined */ 571178354Ssam 572178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 573178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 574178354Ssam ni->ni_macaddr, NULL, 575178354Ssam "too short (1): len %u", m->m_pkthdr.len); 576178354Ssam vap->iv_stats.is_rx_tooshort++; 577178354Ssam goto out; 578178354Ssam } 579178354Ssam /* 580178354Ssam * Bit of a cheat here, we use a pointer for a 3-address 581178354Ssam * frame format but don't reference fields past outside 582178354Ssam * ieee80211_frame_min w/o first validating the data is 583178354Ssam * present. 584178354Ssam */ 585178354Ssam wh = mtod(m, struct ieee80211_frame *); 586178354Ssam 587178354Ssam if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 588178354Ssam IEEE80211_FC0_VERSION_0) { 589178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 590191547Ssam ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", 591191547Ssam wh->i_fc[0], wh->i_fc[1]); 592178354Ssam vap->iv_stats.is_rx_badversion++; 593178354Ssam goto err; 594178354Ssam } 595178354Ssam 596178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 597178354Ssam type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 598178354Ssam subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 599178354Ssam if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 600178354Ssam bssid = wh->i_addr2; 601178354Ssam if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { 602178354Ssam /* not interested in */ 603178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 604178354Ssam bssid, NULL, "%s", "not to bss"); 605178354Ssam vap->iv_stats.is_rx_wrongbss++; 606178354Ssam goto out; 607178354Ssam } 608227338Sadrian 609227338Sadrian /* 610227338Sadrian * Some devices may be in a promiscuous mode 611227338Sadrian * where they receive frames for multiple station 612227338Sadrian * addresses. 613227338Sadrian * 614227338Sadrian * If we receive a data frame that isn't 615227338Sadrian * destined to our VAP MAC, drop it. 616227338Sadrian * 617227338Sadrian * XXX TODO: This is only enforced when not scanning; 618227338Sadrian * XXX it assumes a software-driven scan will put the NIC 619227338Sadrian * XXX into a "no data frames" mode before setting this 620227338Sadrian * XXX flag. Otherwise it may be possible that we'll still 621227338Sadrian * XXX process data frames whilst scanning. 622227338Sadrian */ 623227338Sadrian if ((! IEEE80211_IS_MULTICAST(wh->i_addr1)) 624227338Sadrian && (! IEEE80211_ADDR_EQ(wh->i_addr1, IF_LLADDR(ifp)))) { 625227338Sadrian IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 626227338Sadrian bssid, NULL, "not to cur sta: lladdr=%6D, addr1=%6D", 627227338Sadrian IF_LLADDR(ifp), ":", wh->i_addr1, ":"); 628227338Sadrian vap->iv_stats.is_rx_wrongbss++; 629227338Sadrian goto out; 630227338Sadrian } 631227338Sadrian 632178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 633192468Ssam ni->ni_noise = nf; 634282820Sadrian if ( IEEE80211_HAS_SEQ(type, subtype) && 635282820Sadrian !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 636178354Ssam uint8_t tid = ieee80211_gettid(wh); 637178354Ssam if (IEEE80211_QOS_HAS_SEQ(wh) && 638178354Ssam TID_TO_WME_AC(tid) >= WME_AC_VI) 639178354Ssam ic->ic_wme.wme_hipri_traffic++; 640296254Savos if (! ieee80211_check_rxseq(ni, wh, bssid)) 641178354Ssam goto out; 642178354Ssam } 643178354Ssam } 644178354Ssam 645178354Ssam switch (type) { 646178354Ssam case IEEE80211_FC0_TYPE_DATA: 647178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 648178354Ssam if (m->m_len < hdrspace && 649178354Ssam (m = m_pullup(m, hdrspace)) == NULL) { 650178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 651178354Ssam ni->ni_macaddr, NULL, 652178354Ssam "data too short: expecting %u", hdrspace); 653178354Ssam vap->iv_stats.is_rx_tooshort++; 654178354Ssam goto out; /* XXX */ 655178354Ssam } 656178354Ssam /* 657183247Ssam * Handle A-MPDU re-ordering. If the frame is to be 658183247Ssam * processed directly then ieee80211_ampdu_reorder 659178354Ssam * will return 0; otherwise it has consumed the mbuf 660178354Ssam * and we should do nothing more with it. 661178354Ssam */ 662183247Ssam if ((m->m_flags & M_AMPDU) && 663178354Ssam (dir == IEEE80211_FC1_DIR_FROMDS || 664178354Ssam dir == IEEE80211_FC1_DIR_DSTODS) && 665178354Ssam ieee80211_ampdu_reorder(ni, m) != 0) { 666178354Ssam m = NULL; 667178354Ssam goto out; 668178354Ssam } 669178354Ssam resubmit_ampdu: 670178354Ssam if (dir == IEEE80211_FC1_DIR_FROMDS) { 671178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 672178354Ssam isfromds_mcastecho(vap, wh)) { 673178354Ssam /* 674178354Ssam * In IEEE802.11 network, multicast 675178354Ssam * packets sent from "me" are broadcast 676178354Ssam * from the AP; silently discard for 677178354Ssam * SIMPLEX interface. 678178354Ssam */ 679178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 680178354Ssam wh, "data", "%s", "multicast echo"); 681178354Ssam vap->iv_stats.is_rx_mcastecho++; 682178354Ssam goto out; 683178354Ssam } 684178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) && 685178354Ssam IEEE80211_IS_MULTICAST(wh->i_addr1)) { 686178354Ssam /* 687178354Ssam * DWDS sta's must drop 3-address mcast frames 688178354Ssam * as they will be sent separately as a 4-addr 689178354Ssam * frame. Accepting the 3-addr frame will 690178354Ssam * confuse the bridge into thinking the sending 691178354Ssam * sta is located at the end of WDS link. 692178354Ssam */ 693178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 694178354Ssam "3-address data", "%s", "DWDS enabled"); 695178354Ssam vap->iv_stats.is_rx_mcastecho++; 696178354Ssam goto out; 697178354Ssam } 698178354Ssam } else if (dir == IEEE80211_FC1_DIR_DSTODS) { 699178354Ssam if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) { 700178354Ssam IEEE80211_DISCARD(vap, 701178354Ssam IEEE80211_MSG_INPUT, wh, "4-address data", 702178354Ssam "%s", "DWDS not enabled"); 703178354Ssam vap->iv_stats.is_rx_wrongdir++; 704178354Ssam goto out; 705178354Ssam } 706178354Ssam if ((ifp->if_flags & IFF_SIMPLEX) && 707178354Ssam isdstods_mcastecho(vap, wh)) { 708178354Ssam /* 709178354Ssam * In IEEE802.11 network, multicast 710178354Ssam * packets sent from "me" are broadcast 711178354Ssam * from the AP; silently discard for 712178354Ssam * SIMPLEX interface. 713178354Ssam */ 714178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 715178354Ssam "4-address data", "%s", "multicast echo"); 716178354Ssam vap->iv_stats.is_rx_mcastecho++; 717178354Ssam goto out; 718178354Ssam } 719178354Ssam } else { 720178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, 721178354Ssam "data", "incorrect dir 0x%x", dir); 722178354Ssam vap->iv_stats.is_rx_wrongdir++; 723178354Ssam goto out; 724178354Ssam } 725178354Ssam 726178354Ssam /* 727178354Ssam * Handle privacy requirements. Note that we 728178354Ssam * must not be preempted from here until after 729178354Ssam * we (potentially) call ieee80211_crypto_demic; 730178354Ssam * otherwise we may violate assumptions in the 731178354Ssam * crypto cipher modules used to do delayed update 732178354Ssam * of replay sequence numbers. 733178354Ssam */ 734260444Skevlo if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 735178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 736178354Ssam /* 737178354Ssam * Discard encrypted frames when privacy is off. 738178354Ssam */ 739178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 740178354Ssam wh, "WEP", "%s", "PRIVACY off"); 741178354Ssam vap->iv_stats.is_rx_noprivacy++; 742178354Ssam IEEE80211_NODE_STAT(ni, rx_noprivacy); 743178354Ssam goto out; 744178354Ssam } 745178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 746178354Ssam if (key == NULL) { 747178354Ssam /* NB: stats+msgs handled in crypto_decap */ 748178354Ssam IEEE80211_NODE_STAT(ni, rx_wepfail); 749178354Ssam goto out; 750178354Ssam } 751178354Ssam wh = mtod(m, struct ieee80211_frame *); 752260444Skevlo wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; 753178354Ssam } else { 754178354Ssam /* XXX M_WEP and IEEE80211_F_PRIVACY */ 755178354Ssam key = NULL; 756178354Ssam } 757178354Ssam 758178354Ssam /* 759178354Ssam * Save QoS bits for use below--before we strip the header. 760178354Ssam */ 761344969Savos if (subtype == IEEE80211_FC0_SUBTYPE_QOS) 762344969Savos qos = ieee80211_getqos(wh)[0]; 763344969Savos else 764178354Ssam qos = 0; 765178354Ssam 766178354Ssam /* 767178354Ssam * Next up, any fragmentation. 768178354Ssam */ 769178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 770178354Ssam m = ieee80211_defrag(ni, m, hdrspace); 771178354Ssam if (m == NULL) { 772178354Ssam /* Fragment dropped or frame not complete yet */ 773178354Ssam goto out; 774178354Ssam } 775178354Ssam } 776178354Ssam wh = NULL; /* no longer valid, catch any uses */ 777178354Ssam 778178354Ssam /* 779178354Ssam * Next strip any MSDU crypto bits. 780178354Ssam */ 781178354Ssam if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { 782178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 783178354Ssam ni->ni_macaddr, "data", "%s", "demic error"); 784178354Ssam vap->iv_stats.is_rx_demicfail++; 785178354Ssam IEEE80211_NODE_STAT(ni, rx_demicfail); 786178354Ssam goto out; 787178354Ssam } 788178354Ssam 789178354Ssam /* copy to listener after decrypt */ 790192468Ssam if (ieee80211_radiotap_active_vap(vap)) 791202967Srpaulo ieee80211_radiotap_rx(vap, m); 792178354Ssam need_tap = 0; 793178354Ssam 794178354Ssam /* 795178354Ssam * Finally, strip the 802.11 header. 796178354Ssam */ 797178354Ssam m = ieee80211_decap(vap, m, hdrspace); 798178354Ssam if (m == NULL) { 799178354Ssam /* XXX mask bit to check for both */ 800178354Ssam /* don't count Null data frames as errors */ 801178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 802178354Ssam subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 803178354Ssam goto out; 804178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 805178354Ssam ni->ni_macaddr, "data", "%s", "decap error"); 806178354Ssam vap->iv_stats.is_rx_decap++; 807178354Ssam IEEE80211_NODE_STAT(ni, rx_decap); 808178354Ssam goto err; 809178354Ssam } 810178354Ssam eh = mtod(m, struct ether_header *); 811178354Ssam if (!ieee80211_node_is_authorized(ni)) { 812178354Ssam /* 813178354Ssam * Deny any non-PAE frames received prior to 814178354Ssam * authorization. For open/shared-key 815178354Ssam * authentication the port is mark authorized 816178354Ssam * after authentication completes. For 802.1x 817178354Ssam * the port is not marked authorized by the 818178354Ssam * authenticator until the handshake has completed. 819178354Ssam */ 820178354Ssam if (eh->ether_type != htons(ETHERTYPE_PAE)) { 821178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 822178354Ssam eh->ether_shost, "data", 823178354Ssam "unauthorized port: ether type 0x%x len %u", 824178354Ssam eh->ether_type, m->m_pkthdr.len); 825178354Ssam vap->iv_stats.is_rx_unauth++; 826178354Ssam IEEE80211_NODE_STAT(ni, rx_unauth); 827178354Ssam goto err; 828178354Ssam } 829178354Ssam } else { 830178354Ssam /* 831178354Ssam * When denying unencrypted frames, discard 832178354Ssam * any non-PAE frames received without encryption. 833178354Ssam */ 834178354Ssam if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && 835178354Ssam (key == NULL && (m->m_flags & M_WEP) == 0) && 836178354Ssam eh->ether_type != htons(ETHERTYPE_PAE)) { 837178354Ssam /* 838178354Ssam * Drop unencrypted frames. 839178354Ssam */ 840178354Ssam vap->iv_stats.is_rx_unencrypted++; 841178354Ssam IEEE80211_NODE_STAT(ni, rx_unencrypted); 842178354Ssam goto out; 843178354Ssam } 844178354Ssam } 845178354Ssam /* XXX require HT? */ 846178354Ssam if (qos & IEEE80211_QOS_AMSDU) { 847178354Ssam m = ieee80211_decap_amsdu(ni, m); 848178354Ssam if (m == NULL) 849178354Ssam return IEEE80211_FC0_TYPE_DATA; 850190391Ssam } else { 851190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 852190391Ssam m = ieee80211_decap_fastframe(vap, ni, m); 853190391Ssam if (m == NULL) 854178354Ssam return IEEE80211_FC0_TYPE_DATA; 855190391Ssam#endif 856178354Ssam } 857178354Ssam ieee80211_deliver_data(vap, ni, m); 858178354Ssam return IEEE80211_FC0_TYPE_DATA; 859178354Ssam 860178354Ssam case IEEE80211_FC0_TYPE_MGT: 861178354Ssam vap->iv_stats.is_rx_mgmt++; 862178354Ssam IEEE80211_NODE_STAT(ni, rx_mgmt); 863178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 864178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 865178354Ssam wh, "data", "incorrect dir 0x%x", dir); 866178354Ssam vap->iv_stats.is_rx_wrongdir++; 867178354Ssam goto err; 868178354Ssam } 869178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 870178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 871178354Ssam ni->ni_macaddr, "mgt", "too short: len %u", 872178354Ssam m->m_pkthdr.len); 873178354Ssam vap->iv_stats.is_rx_tooshort++; 874178354Ssam goto out; 875178354Ssam } 876178354Ssam#ifdef IEEE80211_DEBUG 877178354Ssam if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || 878178354Ssam ieee80211_msg_dumppkts(vap)) { 879178354Ssam if_printf(ifp, "received %s from %s rssi %d\n", 880298376Savos ieee80211_mgt_subtype_name(subtype), 881178354Ssam ether_sprintf(wh->i_addr2), rssi); 882178354Ssam } 883178354Ssam#endif 884260444Skevlo if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 885178354Ssam if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { 886178354Ssam /* 887178354Ssam * Only shared key auth frames with a challenge 888178354Ssam * should be encrypted, discard all others. 889178354Ssam */ 890178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 891298376Savos wh, ieee80211_mgt_subtype_name(subtype), 892178354Ssam "%s", "WEP set but not permitted"); 893178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 894178354Ssam goto out; 895178354Ssam } 896178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 897178354Ssam /* 898178354Ssam * Discard encrypted frames when privacy is off. 899178354Ssam */ 900178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 901178354Ssam wh, "mgt", "%s", "WEP set but PRIVACY off"); 902178354Ssam vap->iv_stats.is_rx_noprivacy++; 903178354Ssam goto out; 904178354Ssam } 905178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 906178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 907178354Ssam if (key == NULL) { 908178354Ssam /* NB: stats+msgs handled in crypto_decap */ 909178354Ssam goto out; 910178354Ssam } 911178354Ssam wh = mtod(m, struct ieee80211_frame *); 912260444Skevlo wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; 913178354Ssam } 914283535Sadrian vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); 915191534Ssam goto out; 916178354Ssam 917178354Ssam case IEEE80211_FC0_TYPE_CTL: 918178354Ssam vap->iv_stats.is_rx_ctl++; 919178354Ssam IEEE80211_NODE_STAT(ni, rx_ctrl); 920191546Ssam vap->iv_recv_ctl(ni, m, subtype); 921178354Ssam goto out; 922191549Ssam 923178354Ssam default: 924178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 925178354Ssam wh, NULL, "bad frame type 0x%x", type); 926178354Ssam /* should not come here */ 927178354Ssam break; 928178354Ssam } 929178354Ssamerr: 930271861Sglebius if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 931178354Ssamout: 932178354Ssam if (m != NULL) { 933192765Ssam if (need_tap && ieee80211_radiotap_active_vap(vap)) 934192468Ssam ieee80211_radiotap_rx(vap, m); 935178354Ssam m_freem(m); 936178354Ssam } 937178354Ssam return type; 938178354Ssam} 939178354Ssam 940178354Ssamstatic void 941178354Ssamsta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, 942192468Ssam int rssi, int nf, uint16_t seq, uint16_t status) 943178354Ssam{ 944178354Ssam struct ieee80211vap *vap = ni->ni_vap; 945178354Ssam 946178354Ssam if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { 947178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 948178354Ssam ni->ni_macaddr, "open auth", 949178354Ssam "bad sta auth mode %u", ni->ni_authmode); 950178354Ssam vap->iv_stats.is_rx_bad_auth++; /* XXX */ 951178354Ssam return; 952178354Ssam } 953178354Ssam if (vap->iv_state != IEEE80211_S_AUTH || 954178354Ssam seq != IEEE80211_AUTH_OPEN_RESPONSE) { 955178354Ssam vap->iv_stats.is_rx_bad_auth++; 956178354Ssam return; 957178354Ssam } 958178354Ssam if (status != 0) { 959178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, 960178354Ssam ni, "open auth failed (reason %d)", status); 961178354Ssam vap->iv_stats.is_rx_auth_fail++; 962178354Ssam vap->iv_stats.is_rx_authfail_code = status; 963178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 964178354Ssam IEEE80211_SCAN_FAIL_STATUS); 965178354Ssam } else 966178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 967178354Ssam} 968178354Ssam 969178354Ssamstatic void 970178354Ssamsta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, 971192468Ssam uint8_t *frm, uint8_t *efrm, int rssi, int nf, 972178354Ssam uint16_t seq, uint16_t status) 973178354Ssam{ 974178354Ssam struct ieee80211vap *vap = ni->ni_vap; 975178354Ssam uint8_t *challenge; 976178354Ssam 977178354Ssam /* 978178354Ssam * NB: this can happen as we allow pre-shared key 979178354Ssam * authentication to be enabled w/o wep being turned 980178354Ssam * on so that configuration of these can be done 981178354Ssam * in any order. It may be better to enforce the 982178354Ssam * ordering in which case this check would just be 983178354Ssam * for sanity/consistency. 984178354Ssam */ 985178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 986178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 987178354Ssam ni->ni_macaddr, "shared key auth", 988178354Ssam "%s", " PRIVACY is disabled"); 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 goto bad; 1003178354Ssam } 1004178354Ssam 1005178354Ssam challenge = NULL; 1006178354Ssam if (frm + 1 < efrm) { 1007178354Ssam if ((frm[1] + 2) > (efrm - frm)) { 1008178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1009178354Ssam ni->ni_macaddr, "shared key auth", 1010178354Ssam "ie %d/%d too long", 1011178354Ssam frm[0], (frm[1] + 2) - (efrm - frm)); 1012178354Ssam vap->iv_stats.is_rx_bad_auth++; 1013178354Ssam goto bad; 1014178354Ssam } 1015178354Ssam if (*frm == IEEE80211_ELEMID_CHALLENGE) 1016178354Ssam challenge = frm; 1017178354Ssam frm += frm[1] + 2; 1018178354Ssam } 1019178354Ssam switch (seq) { 1020178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1021178354Ssam case IEEE80211_AUTH_SHARED_RESPONSE: 1022178354Ssam if (challenge == NULL) { 1023178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1024178354Ssam ni->ni_macaddr, "shared key auth", 1025178354Ssam "%s", "no challenge"); 1026178354Ssam vap->iv_stats.is_rx_bad_auth++; 1027178354Ssam goto bad; 1028178354Ssam } 1029178354Ssam if (challenge[1] != IEEE80211_CHALLENGE_LEN) { 1030178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, 1031178354Ssam ni->ni_macaddr, "shared key auth", 1032178354Ssam "bad challenge len %d", challenge[1]); 1033178354Ssam vap->iv_stats.is_rx_bad_auth++; 1034178354Ssam goto bad; 1035178354Ssam } 1036178354Ssam default: 1037178354Ssam break; 1038178354Ssam } 1039178354Ssam if (vap->iv_state != IEEE80211_S_AUTH) 1040178354Ssam return; 1041178354Ssam switch (seq) { 1042178354Ssam case IEEE80211_AUTH_SHARED_PASS: 1043178354Ssam if (ni->ni_challenge != NULL) { 1044283538Sadrian IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); 1045178354Ssam ni->ni_challenge = NULL; 1046178354Ssam } 1047178354Ssam if (status != 0) { 1048178354Ssam IEEE80211_NOTE_FRAME(vap, 1049178354Ssam IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh, 1050178354Ssam "shared key auth failed (reason %d)", status); 1051178354Ssam vap->iv_stats.is_rx_auth_fail++; 1052178354Ssam vap->iv_stats.is_rx_authfail_code = status; 1053178354Ssam return; 1054178354Ssam } 1055178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1056178354Ssam break; 1057178354Ssam case IEEE80211_AUTH_SHARED_CHALLENGE: 1058178354Ssam if (!ieee80211_alloc_challenge(ni)) 1059178354Ssam return; 1060178354Ssam /* XXX could optimize by passing recvd challenge */ 1061178354Ssam memcpy(ni->ni_challenge, &challenge[2], challenge[1]); 1062178354Ssam IEEE80211_SEND_MGMT(ni, 1063178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); 1064178354Ssam break; 1065178354Ssam default: 1066178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH, 1067178354Ssam wh, "shared key auth", "bad seq %d", seq); 1068178354Ssam vap->iv_stats.is_rx_bad_auth++; 1069178354Ssam return; 1070178354Ssam } 1071178354Ssam return; 1072178354Ssambad: 1073178354Ssam /* 1074178354Ssam * Kick the state machine. This short-circuits 1075178354Ssam * using the mgt frame timeout to trigger the 1076178354Ssam * state transition. 1077178354Ssam */ 1078178354Ssam if (vap->iv_state == IEEE80211_S_AUTH) 1079178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1080178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1081178354Ssam} 1082178354Ssam 1083244060Sadrianint 1084178354Ssamieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm, 1085178354Ssam const struct ieee80211_frame *wh) 1086178354Ssam{ 1087178354Ssam#define MS(_v, _f) (((_v) & _f) >> _f##_S) 1088178354Ssam struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme; 1089178354Ssam u_int len = frm[1], qosinfo; 1090178354Ssam int i; 1091178354Ssam 1092178354Ssam if (len < sizeof(struct ieee80211_wme_param)-2) { 1093178354Ssam IEEE80211_DISCARD_IE(vap, 1094178354Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, 1095178354Ssam wh, "WME", "too short, len %u", len); 1096178354Ssam return -1; 1097178354Ssam } 1098178354Ssam qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)]; 1099178354Ssam qosinfo &= WME_QOSINFO_COUNT; 1100178354Ssam /* XXX do proper check for wraparound */ 1101178354Ssam if (qosinfo == wme->wme_wmeChanParams.cap_info) 1102178354Ssam return 0; 1103178354Ssam frm += __offsetof(struct ieee80211_wme_param, params_acParams); 1104178354Ssam for (i = 0; i < WME_NUM_AC; i++) { 1105178354Ssam struct wmeParams *wmep = 1106178354Ssam &wme->wme_wmeChanParams.cap_wmeParams[i]; 1107178354Ssam /* NB: ACI not used */ 1108178354Ssam wmep->wmep_acm = MS(frm[0], WME_PARAM_ACM); 1109178354Ssam wmep->wmep_aifsn = MS(frm[0], WME_PARAM_AIFSN); 1110178354Ssam wmep->wmep_logcwmin = MS(frm[1], WME_PARAM_LOGCWMIN); 1111178354Ssam wmep->wmep_logcwmax = MS(frm[1], WME_PARAM_LOGCWMAX); 1112298359Savos wmep->wmep_txopLimit = le16dec(frm+2); 1113178354Ssam frm += 4; 1114178354Ssam } 1115178354Ssam wme->wme_wmeChanParams.cap_info = qosinfo; 1116178354Ssam return 1; 1117178354Ssam#undef MS 1118178354Ssam} 1119178354Ssam 1120178354Ssam/* 1121193439Ssam * Process 11h Channel Switch Announcement (CSA) ie. If this 1122193439Ssam * is the first CSA then initiate the switch. Otherwise we 1123193439Ssam * track state and trigger completion and/or cancel of the switch. 1124193439Ssam * XXX should be public for IBSS use 1125193439Ssam */ 1126193439Ssamstatic void 1127193439Ssamieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm, 1128193439Ssam const struct ieee80211_frame *wh) 1129193439Ssam{ 1130193439Ssam struct ieee80211com *ic = vap->iv_ic; 1131193439Ssam const struct ieee80211_csa_ie *csa = 1132193439Ssam (const struct ieee80211_csa_ie *) frm; 1133193439Ssam 1134193439Ssam KASSERT(vap->iv_state >= IEEE80211_S_RUN, 1135193439Ssam ("state %s", ieee80211_state_name[vap->iv_state])); 1136193439Ssam 1137193439Ssam if (csa->csa_mode > 1) { 1138193439Ssam IEEE80211_DISCARD_IE(vap, 1139193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1140193439Ssam wh, "CSA", "invalid mode %u", csa->csa_mode); 1141193439Ssam return; 1142193439Ssam } 1143193439Ssam IEEE80211_LOCK(ic); 1144193439Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 1145193439Ssam /* 1146193439Ssam * Convert the channel number to a channel reference. We 1147193439Ssam * try first to preserve turbo attribute of the current 1148193439Ssam * channel then fallback. Note this will not work if the 1149193439Ssam * CSA specifies a channel that requires a band switch (e.g. 1150193439Ssam * 11a => 11g). This is intentional as 11h is defined only 1151193439Ssam * for 5GHz/11a and because the switch does not involve a 1152193439Ssam * reassociation, protocol state (capabilities, negotated 1153193439Ssam * rates, etc) may/will be wrong. 1154193439Ssam */ 1155193439Ssam struct ieee80211_channel *c = 1156193439Ssam ieee80211_find_channel_byieee(ic, csa->csa_newchan, 1157193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO)); 1158193439Ssam if (c == NULL) { 1159193439Ssam c = ieee80211_find_channel_byieee(ic, 1160193439Ssam csa->csa_newchan, 1161193439Ssam (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL)); 1162193439Ssam if (c == NULL) { 1163193439Ssam IEEE80211_DISCARD_IE(vap, 1164193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1165193439Ssam wh, "CSA", "invalid channel %u", 1166193439Ssam csa->csa_newchan); 1167193439Ssam goto done; 1168193439Ssam } 1169193439Ssam } 1170193439Ssam#if IEEE80211_CSA_COUNT_MIN > 0 1171193439Ssam if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) { 1172193439Ssam /* 1173193439Ssam * Require at least IEEE80211_CSA_COUNT_MIN count to 1174193439Ssam * reduce the risk of being redirected by a fabricated 1175193439Ssam * CSA. If a valid CSA is dropped we'll still get a 1176193439Ssam * beacon miss when the AP leaves the channel so we'll 1177193439Ssam * eventually follow to the new channel. 1178193439Ssam * 1179193439Ssam * NOTE: this violates the 11h spec that states that 1180193439Ssam * count may be any value and if 0 then a switch 1181193439Ssam * should happen asap. 1182193439Ssam */ 1183193439Ssam IEEE80211_DISCARD_IE(vap, 1184193439Ssam IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, 1185193439Ssam wh, "CSA", "count %u too small, must be >= %u", 1186193439Ssam csa->csa_count, IEEE80211_CSA_COUNT_MIN); 1187193439Ssam goto done; 1188193439Ssam } 1189193439Ssam#endif 1190193439Ssam ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count); 1191193439Ssam } else { 1192193439Ssam /* 1193193439Ssam * Validate this ie against the initial CSA. We require 1194193439Ssam * mode and channel not change and the count must be 1195193439Ssam * monotonically decreasing. This may be pointless and 1196193439Ssam * canceling the switch as a result may be too paranoid but 1197193439Ssam * in the worst case if we drop out of CSA because of this 1198193439Ssam * and the AP does move then we'll just end up taking a 1199193439Ssam * beacon miss and scan to find the AP. 1200193439Ssam * 1201193439Ssam * XXX may want <= on count as we also process ProbeResp 1202193439Ssam * frames and those may come in w/ the same count as the 1203193439Ssam * previous beacon; but doing so leaves us open to a stuck 1204193439Ssam * count until we add a dead-man timer 1205193439Ssam */ 1206193439Ssam if (!(csa->csa_count < ic->ic_csa_count && 1207193439Ssam csa->csa_mode == ic->ic_csa_mode && 1208193439Ssam csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) { 1209193439Ssam IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh, 1210193439Ssam "CSA ie mismatch, initial ie <%d,%d,%d>, " 1211193439Ssam "this ie <%d,%d,%d>", ic->ic_csa_mode, 1212193439Ssam ic->ic_csa_newchan, ic->ic_csa_count, 1213193439Ssam csa->csa_mode, csa->csa_newchan, csa->csa_count); 1214193439Ssam ieee80211_csa_cancelswitch(ic); 1215193439Ssam } else { 1216193439Ssam if (csa->csa_count <= 1) 1217193439Ssam ieee80211_csa_completeswitch(ic); 1218193439Ssam else 1219193439Ssam ic->ic_csa_count = csa->csa_count; 1220193439Ssam } 1221193439Ssam } 1222193439Ssamdone: 1223193439Ssam IEEE80211_UNLOCK(ic); 1224193439Ssam} 1225193439Ssam 1226193439Ssam/* 1227178354Ssam * Return non-zero if a background scan may be continued: 1228178354Ssam * o bg scan is active 1229178354Ssam * o no channel switch is pending 1230178354Ssam * o there has not been any traffic recently 1231178354Ssam * 1232178354Ssam * Note we do not check if there is an administrative enable; 1233178354Ssam * this is only done to start the scan. We assume that any 1234178354Ssam * change in state will be accompanied by a request to cancel 1235178354Ssam * active scans which will otherwise cause this test to fail. 1236178354Ssam */ 1237178354Ssamstatic __inline int 1238178354Ssamcontbgscan(struct ieee80211vap *vap) 1239178354Ssam{ 1240178354Ssam struct ieee80211com *ic = vap->iv_ic; 1241178354Ssam 1242178354Ssam return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) && 1243178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1244178354Ssam vap->iv_state == IEEE80211_S_RUN && /* XXX? */ 1245297405Sadrian ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1246178354Ssam} 1247178354Ssam 1248178354Ssam/* 1249178354Ssam * Return non-zero if a backgrond scan may be started: 1250178354Ssam * o bg scanning is administratively enabled 1251178354Ssam * o no channel switch is pending 1252178354Ssam * o we are not boosted on a dynamic turbo channel 1253178354Ssam * o there has not been a scan recently 1254178354Ssam * o there has not been any traffic recently 1255178354Ssam */ 1256178354Ssamstatic __inline int 1257178354Ssamstartbgscan(struct ieee80211vap *vap) 1258178354Ssam{ 1259178354Ssam struct ieee80211com *ic = vap->iv_ic; 1260178354Ssam 1261178354Ssam return ((vap->iv_flags & IEEE80211_F_BGSCAN) && 1262178354Ssam (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && 1263190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1264178354Ssam !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && 1265190391Ssam#endif 1266297405Sadrian ieee80211_time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) && 1267297405Sadrian ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); 1268178354Ssam} 1269178354Ssam 1270178354Ssamstatic void 1271283535Sadriansta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, 1272283535Sadrian const struct ieee80211_rx_stats *rxs, 1273283535Sadrian int rssi, int nf) 1274178354Ssam{ 1275178354Ssam#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP) 1276178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1277178354Ssam struct ieee80211com *ic = ni->ni_ic; 1278283535Sadrian struct ieee80211_channel *rxchan = ic->ic_curchan; 1279178354Ssam struct ieee80211_frame *wh; 1280178354Ssam uint8_t *frm, *efrm; 1281178354Ssam uint8_t *rates, *xrates, *wme, *htcap, *htinfo; 1282178354Ssam uint8_t rate; 1283233452Sadrian int ht_state_change = 0; 1284178354Ssam 1285178354Ssam wh = mtod(m0, struct ieee80211_frame *); 1286178354Ssam frm = (uint8_t *)&wh[1]; 1287178354Ssam efrm = mtod(m0, uint8_t *) + m0->m_len; 1288178354Ssam switch (subtype) { 1289178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 1290178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: { 1291178354Ssam struct ieee80211_scanparams scan; 1292283535Sadrian struct ieee80211_channel *c; 1293178354Ssam /* 1294178354Ssam * We process beacon/probe response frames: 1295178354Ssam * o when scanning, or 1296178354Ssam * o station mode when associated (to collect state 1297191444Srpaulo * updates such as 802.11g slot time) 1298178354Ssam * Frames otherwise received are discarded. 1299178354Ssam */ 1300178354Ssam if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) { 1301178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1302178354Ssam return; 1303178354Ssam } 1304283535Sadrian 1305283535Sadrian /* Override RX channel as appropriate */ 1306283535Sadrian if (rxs != NULL) { 1307283535Sadrian c = ieee80211_lookup_channel_rxstatus(vap, rxs); 1308283535Sadrian if (c != NULL) 1309283535Sadrian rxchan = c; 1310283535Sadrian } 1311283535Sadrian 1312178354Ssam /* XXX probe response in sta mode when !scanning? */ 1313283535Sadrian if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) { 1314232270Sadrian if (! (ic->ic_flags & IEEE80211_F_SCAN)) 1315232270Sadrian vap->iv_stats.is_beacon_bad++; 1316178354Ssam return; 1317232244Sadrian } 1318264855Sadrian 1319178354Ssam /* 1320178354Ssam * Count frame now that we know it's to be processed. 1321178354Ssam */ 1322178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 1323178354Ssam vap->iv_stats.is_rx_beacon++; /* XXX remove */ 1324178354Ssam IEEE80211_NODE_STAT(ni, rx_beacons); 1325178354Ssam } else 1326178354Ssam IEEE80211_NODE_STAT(ni, rx_proberesp); 1327178354Ssam /* 1328178354Ssam * When operating in station mode, check for state updates. 1329178354Ssam * Be careful to ignore beacons received while doing a 1330178354Ssam * background scan. We consider only 11g/WMM stuff right now. 1331178354Ssam */ 1332178354Ssam if (ni->ni_associd != 0 && 1333178354Ssam ((ic->ic_flags & IEEE80211_F_SCAN) == 0 || 1334178354Ssam IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) { 1335178354Ssam /* record tsf of last beacon */ 1336178354Ssam memcpy(ni->ni_tstamp.data, scan.tstamp, 1337178354Ssam sizeof(ni->ni_tstamp)); 1338178354Ssam /* count beacon frame for s/w bmiss handling */ 1339178354Ssam vap->iv_swbmiss_count++; 1340178354Ssam vap->iv_bmiss_count = 0; 1341178354Ssam if (ni->ni_erp != scan.erp) { 1342178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1343178354Ssam wh->i_addr2, 1344178354Ssam "erp change: was 0x%x, now 0x%x", 1345178354Ssam ni->ni_erp, scan.erp); 1346178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1347178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1348178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1349178354Ssam else 1350178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1351178354Ssam ni->ni_erp = scan.erp; 1352178354Ssam /* XXX statistic */ 1353178354Ssam /* XXX driver notification */ 1354178354Ssam } 1355178354Ssam if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) { 1356178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1357178354Ssam wh->i_addr2, 1358178354Ssam "capabilities change: was 0x%x, now 0x%x", 1359178354Ssam ni->ni_capinfo, scan.capinfo); 1360178354Ssam /* 1361178354Ssam * NB: we assume short preamble doesn't 1362178354Ssam * change dynamically 1363178354Ssam */ 1364178354Ssam ieee80211_set_shortslottime(ic, 1365178354Ssam IEEE80211_IS_CHAN_A(ic->ic_bsschan) || 1366178354Ssam (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1367178354Ssam ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME) 1368178354Ssam | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME); 1369178354Ssam /* XXX statistic */ 1370178354Ssam } 1371178354Ssam if (scan.wme != NULL && 1372178354Ssam (ni->ni_flags & IEEE80211_NODE_QOS) && 1373178354Ssam ieee80211_parse_wmeparams(vap, scan.wme, wh) > 0) 1374178354Ssam ieee80211_wme_updateparams(vap); 1375190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1376178354Ssam if (scan.ath != NULL) 1377178354Ssam ieee80211_parse_athparams(ni, scan.ath, wh); 1378190391Ssam#endif 1379183254Ssam if (scan.htcap != NULL && scan.htinfo != NULL && 1380193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1381178354Ssam /* XXX state changes? */ 1382233452Sadrian if (ieee80211_ht_updateparams(ni, 1383233452Sadrian scan.htcap, scan.htinfo)) 1384233452Sadrian ht_state_change = 1; 1385178354Ssam } 1386227331Sadrian if (scan.quiet) 1387227331Sadrian ic->ic_set_quiet(ni, scan.quiet); 1388264855Sadrian 1389178354Ssam if (scan.tim != NULL) { 1390178354Ssam struct ieee80211_tim_ie *tim = 1391178354Ssam (struct ieee80211_tim_ie *) scan.tim; 1392264855Sadrian /* 1393264855Sadrian * XXX Check/debug this code; see if it's about 1394264855Sadrian * the right time to force the VAP awake if we 1395264855Sadrian * receive a frame destined for us? 1396264855Sadrian */ 1397178354Ssam int aid = IEEE80211_AID(ni->ni_associd); 1398178354Ssam int ix = aid / NBBY; 1399178354Ssam int min = tim->tim_bitctl &~ 1; 1400178354Ssam int max = tim->tim_len + min - 4; 1401275983Sadrian int tim_ucast = 0, tim_mcast = 0; 1402264855Sadrian 1403264855Sadrian /* 1404264855Sadrian * Only do this for unicast traffic in the TIM 1405264855Sadrian * The multicast traffic notification for 1406264855Sadrian * the scan notification stuff should occur 1407264855Sadrian * differently. 1408264855Sadrian */ 1409264855Sadrian if (min <= ix && ix <= max && 1410264855Sadrian isset(tim->tim_bitmap - min, aid)) { 1411275983Sadrian tim_ucast = 1; 1412264855Sadrian } 1413264855Sadrian 1414264855Sadrian /* 1415275983Sadrian * Do a separate notification 1416264855Sadrian * for the multicast bit being set. 1417264855Sadrian */ 1418264906Sadrian if (tim->tim_bitctl & 1) { 1419275983Sadrian tim_mcast = 1; 1420275983Sadrian } 1421275983Sadrian 1422275983Sadrian /* 1423275983Sadrian * If the TIM indicates there's traffic for 1424275983Sadrian * us then get us out of STA mode powersave. 1425275983Sadrian */ 1426275983Sadrian if (tim_ucast == 1) { 1427275983Sadrian 1428275983Sadrian /* 1429275983Sadrian * Wake us out of SLEEP state if we're 1430275983Sadrian * in it; and if we're doing bgscan 1431275983Sadrian * then wake us out of STA powersave. 1432275983Sadrian */ 1433264855Sadrian ieee80211_sta_tim_notify(vap, 1); 1434275983Sadrian 1435275983Sadrian /* 1436275983Sadrian * This is preventing us from 1437275983Sadrian * continuing a bgscan; because it 1438275983Sadrian * tricks the contbgscan() 1439275983Sadrian * routine to think there's always 1440275983Sadrian * traffic for us. 1441275983Sadrian * 1442275983Sadrian * I think we need both an RX and 1443275983Sadrian * TX ic_lastdata field. 1444275983Sadrian */ 1445178354Ssam ic->ic_lastdata = ticks; 1446178354Ssam } 1447264906Sadrian 1448178354Ssam ni->ni_dtim_count = tim->tim_count; 1449178354Ssam ni->ni_dtim_period = tim->tim_period; 1450178354Ssam } 1451193439Ssam if (scan.csa != NULL && 1452193439Ssam (vap->iv_flags & IEEE80211_F_DOTH)) 1453193439Ssam ieee80211_parse_csaparams(vap, scan.csa, wh); 1454193439Ssam else if (ic->ic_flags & IEEE80211_F_CSAPENDING) { 1455193439Ssam /* 1456193439Ssam * No CSA ie or 11h disabled, but a channel 1457193439Ssam * switch is pending; drop out so we aren't 1458193439Ssam * stuck in CSA state. If the AP really is 1459193439Ssam * moving we'll get a beacon miss and scan. 1460193439Ssam */ 1461193439Ssam IEEE80211_LOCK(ic); 1462193439Ssam ieee80211_csa_cancelswitch(ic); 1463193439Ssam IEEE80211_UNLOCK(ic); 1464193439Ssam } 1465178354Ssam /* 1466178354Ssam * If scanning, pass the info to the scan module. 1467178354Ssam * Otherwise, check if it's the right time to do 1468178354Ssam * a background scan. Background scanning must 1469178354Ssam * be enabled and we must not be operating in the 1470178354Ssam * turbo phase of dynamic turbo mode. Then, 1471178354Ssam * it's been a while since the last background 1472178354Ssam * scan and if no data frames have come through 1473178354Ssam * recently, kick off a scan. Note that this 1474178354Ssam * is the mechanism by which a background scan 1475178354Ssam * is started _and_ continued each time we 1476178354Ssam * return on-channel to receive a beacon from 1477178354Ssam * our ap. 1478178354Ssam */ 1479178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1480283535Sadrian ieee80211_add_scan(vap, rxchan, 1481282742Sadrian &scan, wh, subtype, rssi, nf); 1482178354Ssam } else if (contbgscan(vap)) { 1483178354Ssam ieee80211_bg_scan(vap, 0); 1484178354Ssam } else if (startbgscan(vap)) { 1485178354Ssam vap->iv_stats.is_scan_bg++; 1486178354Ssam#if 0 1487178354Ssam /* wakeup if we are sleeing */ 1488178354Ssam ieee80211_set_pwrsave(vap, 0); 1489178354Ssam#endif 1490178354Ssam ieee80211_bg_scan(vap, 0); 1491178354Ssam } 1492233452Sadrian 1493233452Sadrian /* 1494264855Sadrian * Put the station to sleep if we haven't seen 1495264855Sadrian * traffic in a while. 1496264855Sadrian */ 1497264855Sadrian IEEE80211_LOCK(ic); 1498264855Sadrian ieee80211_sta_ps_timer_check(vap); 1499264855Sadrian IEEE80211_UNLOCK(ic); 1500264855Sadrian 1501264855Sadrian /* 1502233452Sadrian * If we've had a channel width change (eg HT20<->HT40) 1503233452Sadrian * then schedule a delayed driver notification. 1504233452Sadrian */ 1505233452Sadrian if (ht_state_change) 1506233452Sadrian ieee80211_update_chw(ic); 1507178354Ssam return; 1508178354Ssam } 1509178354Ssam /* 1510178354Ssam * If scanning, just pass information to the scan module. 1511178354Ssam */ 1512178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 1513178354Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 1514178354Ssam /* 1515178354Ssam * Actively scanning a channel marked passive; 1516178354Ssam * send a probe request now that we know there 1517178354Ssam * is 802.11 traffic present. 1518178354Ssam * 1519178354Ssam * XXX check if the beacon we recv'd gives 1520178354Ssam * us what we need and suppress the probe req 1521178354Ssam */ 1522178354Ssam ieee80211_probe_curchan(vap, 1); 1523178354Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 1524178354Ssam } 1525283535Sadrian ieee80211_add_scan(vap, rxchan, &scan, wh, 1526282742Sadrian subtype, rssi, nf); 1527178354Ssam return; 1528178354Ssam } 1529178354Ssam break; 1530178354Ssam } 1531178354Ssam 1532178354Ssam case IEEE80211_FC0_SUBTYPE_AUTH: { 1533178354Ssam uint16_t algo, seq, status; 1534178354Ssam /* 1535178354Ssam * auth frame format 1536178354Ssam * [2] algorithm 1537178354Ssam * [2] sequence 1538178354Ssam * [2] status 1539178354Ssam * [tlv*] challenge 1540178354Ssam */ 1541178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1542178354Ssam algo = le16toh(*(uint16_t *)frm); 1543178354Ssam seq = le16toh(*(uint16_t *)(frm + 2)); 1544178354Ssam status = le16toh(*(uint16_t *)(frm + 4)); 1545178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, 1546178354Ssam "recv auth frame with algorithm %d seq %d", algo, seq); 1547178354Ssam 1548178354Ssam if (vap->iv_flags & IEEE80211_F_COUNTERM) { 1549178354Ssam IEEE80211_DISCARD(vap, 1550178354Ssam IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, 1551178354Ssam wh, "auth", "%s", "TKIP countermeasures enabled"); 1552178354Ssam vap->iv_stats.is_rx_auth_countermeasures++; 1553178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 1554178354Ssam ieee80211_send_error(ni, wh->i_addr2, 1555178354Ssam IEEE80211_FC0_SUBTYPE_AUTH, 1556178354Ssam IEEE80211_REASON_MIC_FAILURE); 1557178354Ssam } 1558178354Ssam return; 1559178354Ssam } 1560178354Ssam if (algo == IEEE80211_AUTH_ALG_SHARED) 1561192468Ssam sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, 1562192468Ssam seq, status); 1563178354Ssam else if (algo == IEEE80211_AUTH_ALG_OPEN) 1564192468Ssam sta_auth_open(ni, wh, rssi, nf, seq, status); 1565178354Ssam else { 1566178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1567178354Ssam wh, "auth", "unsupported alg %d", algo); 1568178354Ssam vap->iv_stats.is_rx_auth_unsupported++; 1569178354Ssam return; 1570178354Ssam } 1571178354Ssam break; 1572178354Ssam } 1573178354Ssam 1574178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 1575178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: { 1576178354Ssam uint16_t capinfo, associd; 1577178354Ssam uint16_t status; 1578178354Ssam 1579178354Ssam if (vap->iv_state != IEEE80211_S_ASSOC) { 1580178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1581178354Ssam return; 1582178354Ssam } 1583178354Ssam 1584178354Ssam /* 1585178354Ssam * asresp frame format 1586178354Ssam * [2] capability information 1587178354Ssam * [2] status 1588178354Ssam * [2] association ID 1589178354Ssam * [tlv] supported rates 1590178354Ssam * [tlv] extended supported rates 1591178354Ssam * [tlv] WME 1592178354Ssam * [tlv] HT capabilities 1593178354Ssam * [tlv] HT info 1594178354Ssam */ 1595178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); 1596178354Ssam ni = vap->iv_bss; 1597178354Ssam capinfo = le16toh(*(uint16_t *)frm); 1598178354Ssam frm += 2; 1599178354Ssam status = le16toh(*(uint16_t *)frm); 1600178354Ssam frm += 2; 1601178354Ssam if (status != 0) { 1602178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1603178354Ssam wh->i_addr2, "%sassoc failed (reason %d)", 1604178354Ssam ISREASSOC(subtype) ? "re" : "", status); 1605178354Ssam vap->iv_stats.is_rx_auth_fail++; /* XXX */ 1606178354Ssam return; 1607178354Ssam } 1608178354Ssam associd = le16toh(*(uint16_t *)frm); 1609178354Ssam frm += 2; 1610178354Ssam 1611178354Ssam rates = xrates = wme = htcap = htinfo = NULL; 1612178354Ssam while (efrm - frm > 1) { 1613178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1614178354Ssam switch (*frm) { 1615178354Ssam case IEEE80211_ELEMID_RATES: 1616178354Ssam rates = frm; 1617178354Ssam break; 1618178354Ssam case IEEE80211_ELEMID_XRATES: 1619178354Ssam xrates = frm; 1620178354Ssam break; 1621178354Ssam case IEEE80211_ELEMID_HTCAP: 1622178354Ssam htcap = frm; 1623178354Ssam break; 1624178354Ssam case IEEE80211_ELEMID_HTINFO: 1625178354Ssam htinfo = frm; 1626178354Ssam break; 1627178354Ssam case IEEE80211_ELEMID_VENDOR: 1628178354Ssam if (iswmeoui(frm)) 1629178354Ssam wme = frm; 1630193655Ssam else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { 1631178354Ssam /* 1632178354Ssam * Accept pre-draft HT ie's if the 1633178354Ssam * standard ones have not been seen. 1634178354Ssam */ 1635178354Ssam if (ishtcapoui(frm)) { 1636178354Ssam if (htcap == NULL) 1637178354Ssam htcap = frm; 1638178354Ssam } else if (ishtinfooui(frm)) { 1639178354Ssam if (htinfo == NULL) 1640219603Sbschmidt htinfo = frm; 1641178354Ssam } 1642178354Ssam } 1643178354Ssam /* XXX Atheros OUI support */ 1644178354Ssam break; 1645178354Ssam } 1646178354Ssam frm += frm[1] + 2; 1647178354Ssam } 1648178354Ssam 1649178354Ssam IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 1650178354Ssam if (xrates != NULL) 1651178354Ssam IEEE80211_VERIFY_ELEMENT(xrates, 1652178354Ssam IEEE80211_RATE_MAXSIZE - rates[1], return); 1653178354Ssam rate = ieee80211_setup_rates(ni, rates, xrates, 1654178354Ssam IEEE80211_F_JOIN | 1655178354Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1656178354Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1657178354Ssam if (rate & IEEE80211_RATE_BASIC) { 1658178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, 1659178354Ssam wh->i_addr2, 1660178354Ssam "%sassoc failed (rate set mismatch)", 1661178354Ssam ISREASSOC(subtype) ? "re" : ""); 1662178354Ssam vap->iv_stats.is_rx_assoc_norate++; 1663178354Ssam ieee80211_new_state(vap, IEEE80211_S_SCAN, 1664178354Ssam IEEE80211_SCAN_FAIL_STATUS); 1665178354Ssam return; 1666178354Ssam } 1667178354Ssam 1668178354Ssam ni->ni_capinfo = capinfo; 1669178354Ssam ni->ni_associd = associd; 1670178354Ssam if (ni->ni_jointime == 0) 1671178354Ssam ni->ni_jointime = time_uptime; 1672178354Ssam if (wme != NULL && 1673178354Ssam ieee80211_parse_wmeparams(vap, wme, wh) >= 0) { 1674178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1675178354Ssam ieee80211_wme_updateparams(vap); 1676178354Ssam } else 1677178354Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1678178354Ssam /* 1679178354Ssam * Setup HT state according to the negotiation. 1680178354Ssam * 1681178354Ssam * NB: shouldn't need to check if HT use is enabled but some 1682178354Ssam * ap's send back HT ie's even when we don't indicate we 1683178354Ssam * are HT capable in our AssocReq. 1684178354Ssam */ 1685178354Ssam if (htcap != NULL && htinfo != NULL && 1686193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1687183254Ssam ieee80211_ht_node_init(ni); 1688183254Ssam ieee80211_ht_updateparams(ni, htcap, htinfo); 1689178354Ssam ieee80211_setup_htrates(ni, htcap, 1690178354Ssam IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 1691178354Ssam ieee80211_setup_basic_htrates(ni, htinfo); 1692193966Ssam ieee80211_node_setuptxparms(ni); 1693214894Sbschmidt ieee80211_ratectl_node_init(ni); 1694178354Ssam } 1695297603Sadrian 1696178354Ssam /* 1697297768Sadrian * Always initialise FF/superg state; we can use this 1698297768Sadrian * for doing A-MSDU encapsulation as well. 1699297768Sadrian */ 1700297768Sadrian#ifdef IEEE80211_SUPPORT_SUPERG 1701297768Sadrian ieee80211_ff_node_init(ni); 1702297768Sadrian#endif 1703297768Sadrian 1704297768Sadrian /* 1705178354Ssam * Configure state now that we are associated. 1706178354Ssam * 1707178354Ssam * XXX may need different/additional driver callbacks? 1708178354Ssam */ 1709178354Ssam if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1710178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) { 1711178354Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 1712178354Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 1713178354Ssam } else { 1714178354Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 1715178354Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 1716178354Ssam } 1717178354Ssam ieee80211_set_shortslottime(ic, 1718178354Ssam IEEE80211_IS_CHAN_A(ic->ic_curchan) || 1719178354Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); 1720178354Ssam /* 1721178354Ssam * Honor ERP protection. 1722178354Ssam * 1723178354Ssam * NB: ni_erp should zero for non-11g operation. 1724178354Ssam */ 1725178354Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && 1726178354Ssam (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) 1727178354Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 1728178354Ssam else 1729178354Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 1730178354Ssam IEEE80211_NOTE_MAC(vap, 1731178354Ssam IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2, 1732183256Ssam "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 1733178354Ssam ISREASSOC(subtype) ? "re" : "", 1734178354Ssam IEEE80211_NODE_AID(ni), 1735178354Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 1736178354Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 1737178354Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "", 1738178354Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 1739178354Ssam ni->ni_flags & IEEE80211_NODE_HT ? 1740182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 1741178354Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 1742183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 1743183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 1744183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 1745178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 1746178354Ssam ", fast-frames" : "", 1747178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 1748178354Ssam ", turbo" : "" 1749178354Ssam ); 1750178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, subtype); 1751178354Ssam break; 1752178354Ssam } 1753178354Ssam 1754178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: { 1755178354Ssam uint16_t reason; 1756178354Ssam 1757178354Ssam if (vap->iv_state == IEEE80211_S_SCAN) { 1758178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1759178354Ssam return; 1760178354Ssam } 1761178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1762178354Ssam /* NB: can happen when in promiscuous mode */ 1763178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1764178354Ssam break; 1765178354Ssam } 1766178354Ssam 1767178354Ssam /* 1768178354Ssam * deauth frame format 1769178354Ssam * [2] reason 1770178354Ssam */ 1771178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1772178354Ssam reason = le16toh(*(uint16_t *)frm); 1773178354Ssam 1774178354Ssam vap->iv_stats.is_rx_deauth++; 1775178354Ssam vap->iv_stats.is_rx_deauth_code = reason; 1776178354Ssam IEEE80211_NODE_STAT(ni, rx_deauth); 1777178354Ssam 1778178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, 1779298364Savos "recv deauthenticate (reason: %d (%s))", reason, 1780298364Savos ieee80211_reason_to_string(reason)); 1781178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 1782178354Ssam (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH); 1783178354Ssam break; 1784178354Ssam } 1785178354Ssam 1786178354Ssam case IEEE80211_FC0_SUBTYPE_DISASSOC: { 1787178354Ssam uint16_t reason; 1788178354Ssam 1789178354Ssam if (vap->iv_state != IEEE80211_S_RUN && 1790178354Ssam vap->iv_state != IEEE80211_S_ASSOC && 1791178354Ssam vap->iv_state != IEEE80211_S_AUTH) { 1792178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1793178354Ssam return; 1794178354Ssam } 1795178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { 1796178354Ssam /* NB: can happen when in promiscuous mode */ 1797178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1798178354Ssam break; 1799178354Ssam } 1800178354Ssam 1801178354Ssam /* 1802178354Ssam * disassoc frame format 1803178354Ssam * [2] reason 1804178354Ssam */ 1805178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); 1806178354Ssam reason = le16toh(*(uint16_t *)frm); 1807178354Ssam 1808178354Ssam vap->iv_stats.is_rx_disassoc++; 1809178354Ssam vap->iv_stats.is_rx_disassoc_code = reason; 1810178354Ssam IEEE80211_NODE_STAT(ni, rx_disassoc); 1811178354Ssam 1812178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 1813298364Savos "recv disassociate (reason: %d (%s))", reason, 1814298364Savos ieee80211_reason_to_string(reason)); 1815178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); 1816178354Ssam break; 1817178354Ssam } 1818178354Ssam 1819178354Ssam case IEEE80211_FC0_SUBTYPE_ACTION: 1820218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 1821218958Sbschmidt if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 1822218958Sbschmidt !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1823218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1824218958Sbschmidt wh, NULL, "%s", "not for us"); 1825218958Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 1826218958Sbschmidt } else if (vap->iv_state != IEEE80211_S_RUN) { 1827218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1828218927Sbschmidt wh, NULL, "wrong state %s", 1829218927Sbschmidt ieee80211_state_name[vap->iv_state]); 1830178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1831218958Sbschmidt } else { 1832218958Sbschmidt if (ieee80211_parse_action(ni, m0) == 0) 1833218958Sbschmidt (void)ic->ic_recv_action(ni, wh, frm, efrm); 1834218927Sbschmidt } 1835178354Ssam break; 1836178354Ssam 1837178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 1838178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 1839218927Sbschmidt case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 1840295795Savos case IEEE80211_FC0_SUBTYPE_TIMING_ADV: 1841218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ATIM: 1842218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 1843218927Sbschmidt wh, NULL, "%s", "not handled"); 1844178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 1845218927Sbschmidt break; 1846218927Sbschmidt 1847178354Ssam default: 1848178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 1849218927Sbschmidt wh, "mgt", "subtype 0x%x not handled", subtype); 1850178354Ssam vap->iv_stats.is_rx_badsubtype++; 1851178354Ssam break; 1852178354Ssam } 1853178354Ssam#undef ISREASSOC 1854178354Ssam} 1855191546Ssam 1856191546Ssamstatic void 1857205277Srpaulosta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 1858191546Ssam{ 1859205277Srpaulo switch (subtype) { 1860205277Srpaulo case IEEE80211_FC0_SUBTYPE_BAR: 1861205277Srpaulo ieee80211_recv_bar(ni, m); 1862205277Srpaulo break; 1863205277Srpaulo } 1864191546Ssam} 1865