ieee80211_node.c revision 206358
1116742Ssam/*- 2116904Ssam * Copyright (c) 2001 Atsushi Onoe 3186904Ssam * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 4116742Ssam * All rights reserved. 5116742Ssam * 6116742Ssam * Redistribution and use in source and binary forms, with or without 7116742Ssam * modification, are permitted provided that the following conditions 8116742Ssam * are met: 9116742Ssam * 1. Redistributions of source code must retain the above copyright 10116904Ssam * notice, this list of conditions and the following disclaimer. 11116904Ssam * 2. Redistributions in binary form must reproduce the above copyright 12116904Ssam * notice, this list of conditions and the following disclaimer in the 13116904Ssam * documentation and/or other materials provided with the distribution. 14116742Ssam * 15116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16116904Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17116904Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18116904Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19116904Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20116904Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21116904Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22116904Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23116904Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24116904Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25116742Ssam */ 26116742Ssam 27116742Ssam#include <sys/cdefs.h> 28116742Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_node.c 206358 2010-04-07 15:29:13Z rpaulo $"); 29116742Ssam 30178354Ssam#include "opt_wlan.h" 31178354Ssam 32116742Ssam#include <sys/param.h> 33116742Ssam#include <sys/systm.h> 34116742Ssam#include <sys/mbuf.h> 35116742Ssam#include <sys/malloc.h> 36116742Ssam#include <sys/kernel.h> 37138568Ssam 38116742Ssam#include <sys/socket.h> 39116742Ssam 40116742Ssam#include <net/if.h> 41116742Ssam#include <net/if_media.h> 42116742Ssam#include <net/ethernet.h> 43116742Ssam 44116742Ssam#include <net80211/ieee80211_var.h> 45178354Ssam#include <net80211/ieee80211_input.h> 46190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 47190391Ssam#include <net80211/ieee80211_superg.h> 48190391Ssam#endif 49186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 50186904Ssam#include <net80211/ieee80211_tdma.h> 51186904Ssam#endif 52178354Ssam#include <net80211/ieee80211_wds.h> 53195618Srpaulo#include <net80211/ieee80211_mesh.h> 54206358Srpaulo#include <net80211/ieee80211_ratectl.h> 55116742Ssam 56116742Ssam#include <net/bpf.h> 57116742Ssam 58147221Ssam/* 59195618Srpaulo * IEEE80211_NODE_HASHSIZE must be a power of 2. 60195618Srpaulo */ 61195618SrpauloCTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0); 62195618Srpaulo 63195618Srpaulo/* 64147221Ssam * Association id's are managed with a bit vector. 65147221Ssam */ 66178354Ssam#define IEEE80211_AID_SET(_vap, b) \ 67178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \ 68178354Ssam (1 << (IEEE80211_AID(b) % 32))) 69178354Ssam#define IEEE80211_AID_CLR(_vap, b) \ 70178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \ 71178354Ssam ~(1 << (IEEE80211_AID(b) % 32))) 72178354Ssam#define IEEE80211_AID_ISSET(_vap, b) \ 73178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32))) 74147221Ssam 75159139Sdds#ifdef IEEE80211_DEBUG_REFCNT 76159139Sdds#define REFCNT_LOC "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line 77159139Sdds#else 78159139Sdds#define REFCNT_LOC "%s %p<%s> refcnt %d\n", __func__ 79159139Sdds#endif 80159139Sdds 81170530Ssamstatic int ieee80211_sta_join1(struct ieee80211_node *); 82170530Ssam 83179643Ssamstatic struct ieee80211_node *node_alloc(struct ieee80211vap *, 84179643Ssam const uint8_t [IEEE80211_ADDR_LEN]); 85138568Ssamstatic void node_cleanup(struct ieee80211_node *); 86138568Ssamstatic void node_free(struct ieee80211_node *); 87178354Ssamstatic void node_age(struct ieee80211_node *); 88170530Ssamstatic int8_t node_getrssi(const struct ieee80211_node *); 89170530Ssamstatic void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *); 90178354Ssamstatic void node_getmimoinfo(const struct ieee80211_node *, 91178354Ssam struct ieee80211_mimo_info *); 92116742Ssam 93138568Ssamstatic void _ieee80211_free_node(struct ieee80211_node *); 94120104Ssam 95138568Ssamstatic void ieee80211_node_table_init(struct ieee80211com *ic, 96148863Ssam struct ieee80211_node_table *nt, const char *name, 97170530Ssam int inact, int keymaxix); 98178354Ssamstatic void ieee80211_node_table_reset(struct ieee80211_node_table *, 99178354Ssam struct ieee80211vap *); 100138568Ssamstatic void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt); 101172211Ssamstatic void ieee80211_erp_timeout(struct ieee80211com *); 102138568Ssam 103127876SsamMALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state"); 104178354SsamMALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie"); 105120481Ssam 106116742Ssamvoid 107138568Ssamieee80211_node_attach(struct ieee80211com *ic) 108116742Ssam{ 109195379Ssam /* XXX really want maxlen enforced per-sta */ 110195379Ssam ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8, 111195379Ssam "802.11 staging q"); 112178354Ssam ieee80211_node_table_init(ic, &ic->ic_sta, "station", 113178354Ssam IEEE80211_INACT_INIT, ic->ic_max_keyix); 114178354Ssam callout_init(&ic->ic_inact, CALLOUT_MPSAFE); 115178354Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 116178354Ssam ieee80211_node_timeout, ic); 117116742Ssam 118138568Ssam ic->ic_node_alloc = node_alloc; 119138568Ssam ic->ic_node_free = node_free; 120138568Ssam ic->ic_node_cleanup = node_cleanup; 121178354Ssam ic->ic_node_age = node_age; 122178354Ssam ic->ic_node_drain = node_age; /* NB: same as age */ 123138568Ssam ic->ic_node_getrssi = node_getrssi; 124170530Ssam ic->ic_node_getsignal = node_getsignal; 125178354Ssam ic->ic_node_getmimoinfo = node_getmimoinfo; 126138568Ssam 127178354Ssam /* 128178354Ssam * Set flags to be propagated to all vap's; 129178354Ssam * these define default behaviour/configuration. 130178354Ssam */ 131178354Ssam ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */ 132178354Ssam} 133138568Ssam 134178354Ssamvoid 135178354Ssamieee80211_node_detach(struct ieee80211com *ic) 136178354Ssam{ 137170530Ssam 138178354Ssam callout_drain(&ic->ic_inact); 139178354Ssam ieee80211_node_table_cleanup(&ic->ic_sta); 140195379Ssam ieee80211_ageq_cleanup(&ic->ic_stageq); 141178354Ssam} 142172062Ssam 143178354Ssamvoid 144178354Ssamieee80211_node_vattach(struct ieee80211vap *vap) 145178354Ssam{ 146178354Ssam /* NB: driver can override */ 147178354Ssam vap->iv_max_aid = IEEE80211_AID_DEF; 148178354Ssam 149178354Ssam /* default station inactivity timer setings */ 150178354Ssam vap->iv_inact_init = IEEE80211_INACT_INIT; 151178354Ssam vap->iv_inact_auth = IEEE80211_INACT_AUTH; 152178354Ssam vap->iv_inact_run = IEEE80211_INACT_RUN; 153178354Ssam vap->iv_inact_probe = IEEE80211_INACT_PROBE; 154184277Ssam 155184277Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT, 156184277Ssam "%s: init %u auth %u run %u probe %u\n", __func__, 157184277Ssam vap->iv_inact_init, vap->iv_inact_auth, 158184277Ssam vap->iv_inact_run, vap->iv_inact_probe); 159148863Ssam} 160148863Ssam 161148863Ssamvoid 162178354Ssamieee80211_node_latevattach(struct ieee80211vap *vap) 163148863Ssam{ 164178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 165178354Ssam /* XXX should we allow max aid to be zero? */ 166178354Ssam if (vap->iv_max_aid < IEEE80211_AID_MIN) { 167178354Ssam vap->iv_max_aid = IEEE80211_AID_MIN; 168178354Ssam if_printf(vap->iv_ifp, 169178354Ssam "WARNING: max aid too small, changed to %d\n", 170178354Ssam vap->iv_max_aid); 171178354Ssam } 172186302Ssam vap->iv_aid_bitmap = (uint32_t *) malloc( 173184210Sdes howmany(vap->iv_max_aid, 32) * sizeof(uint32_t), 174178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 175178354Ssam if (vap->iv_aid_bitmap == NULL) { 176178354Ssam /* XXX no way to recover */ 177178354Ssam printf("%s: no memory for AID bitmap, max aid %d!\n", 178178354Ssam __func__, vap->iv_max_aid); 179178354Ssam vap->iv_max_aid = 0; 180178354Ssam } 181138568Ssam } 182138568Ssam 183178354Ssam ieee80211_reset_bss(vap); 184118887Ssam 185178354Ssam vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode); 186116742Ssam} 187116742Ssam 188116742Ssamvoid 189178354Ssamieee80211_node_vdetach(struct ieee80211vap *vap) 190116742Ssam{ 191178354Ssam struct ieee80211com *ic = vap->iv_ic; 192116742Ssam 193178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 194178354Ssam if (vap->iv_bss != NULL) { 195178354Ssam ieee80211_free_node(vap->iv_bss); 196178354Ssam vap->iv_bss = NULL; 197138568Ssam } 198178354Ssam if (vap->iv_aid_bitmap != NULL) { 199186302Ssam free(vap->iv_aid_bitmap, M_80211_NODE); 200178354Ssam vap->iv_aid_bitmap = NULL; 201138568Ssam } 202116742Ssam} 203116742Ssam 204138568Ssam/* 205138568Ssam * Port authorize/unauthorize interfaces for use by an authenticator. 206138568Ssam */ 207138568Ssam 208138568Ssamvoid 209148302Ssamieee80211_node_authorize(struct ieee80211_node *ni) 210138568Ssam{ 211184277Ssam struct ieee80211vap *vap = ni->ni_vap; 212184277Ssam 213138568Ssam ni->ni_flags |= IEEE80211_NODE_AUTH; 214184277Ssam ni->ni_inact_reload = vap->iv_inact_run; 215172062Ssam ni->ni_inact = ni->ni_inact_reload; 216184277Ssam 217184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 218184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 219138568Ssam} 220138568Ssam 221138568Ssamvoid 222148302Ssamieee80211_node_unauthorize(struct ieee80211_node *ni) 223138568Ssam{ 224184277Ssam struct ieee80211vap *vap = ni->ni_vap; 225184277Ssam 226138568Ssam ni->ni_flags &= ~IEEE80211_NODE_AUTH; 227184277Ssam ni->ni_inact_reload = vap->iv_inact_auth; 228172062Ssam if (ni->ni_inact > ni->ni_inact_reload) 229172062Ssam ni->ni_inact = ni->ni_inact_reload; 230184277Ssam 231184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 232184277Ssam "%s: inact_reload %u inact %u", __func__, 233184277Ssam ni->ni_inact_reload, ni->ni_inact); 234138568Ssam} 235138568Ssam 236116742Ssam/* 237183251Ssam * Fix tx parameters for a node according to ``association state''. 238183251Ssam */ 239193966Ssamvoid 240193966Ssamieee80211_node_setuptxparms(struct ieee80211_node *ni) 241183251Ssam{ 242183251Ssam struct ieee80211vap *vap = ni->ni_vap; 243187898Ssam enum ieee80211_phymode mode; 244183251Ssam 245183251Ssam if (ni->ni_flags & IEEE80211_NODE_HT) { 246183251Ssam if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) 247187898Ssam mode = IEEE80211_MODE_11NA; 248183251Ssam else 249187898Ssam mode = IEEE80211_MODE_11NG; 250183251Ssam } else { /* legacy rate handling */ 251187898Ssam if (IEEE80211_IS_CHAN_ST(ni->ni_chan)) 252187898Ssam mode = IEEE80211_MODE_STURBO_A; 253188782Ssam else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan)) 254188782Ssam mode = IEEE80211_MODE_HALF; 255188782Ssam else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan)) 256188782Ssam mode = IEEE80211_MODE_QUARTER; 257191015Ssam /* NB: 108A should be handled as 11a */ 258187898Ssam else if (IEEE80211_IS_CHAN_A(ni->ni_chan)) 259187898Ssam mode = IEEE80211_MODE_11A; 260191015Ssam else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) || 261191015Ssam (ni->ni_flags & IEEE80211_NODE_ERP)) 262187898Ssam mode = IEEE80211_MODE_11G; 263183251Ssam else 264187898Ssam mode = IEEE80211_MODE_11B; 265183251Ssam } 266187898Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 267183251Ssam} 268183251Ssam 269183251Ssam/* 270138568Ssam * Set/change the channel. The rate set is also updated as 271138568Ssam * to insure a consistent view by drivers. 272178354Ssam * XXX should be private but hostap needs it to deal with CSA 273138568Ssam */ 274178354Ssamvoid 275178354Ssamieee80211_node_set_chan(struct ieee80211_node *ni, 276178354Ssam struct ieee80211_channel *chan) 277138568Ssam{ 278178354Ssam struct ieee80211com *ic = ni->ni_ic; 279183251Ssam struct ieee80211vap *vap = ni->ni_vap; 280183251Ssam enum ieee80211_phymode mode; 281170530Ssam 282178354Ssam KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel")); 283178354Ssam 284138568Ssam ni->ni_chan = chan; 285183251Ssam mode = ieee80211_chan2mode(chan); 286170530Ssam if (IEEE80211_IS_CHAN_HT(chan)) { 287170530Ssam /* 288170530Ssam * XXX Gotta be careful here; the rate set returned by 289170530Ssam * ieee80211_get_suprates is actually any HT rate 290170530Ssam * set so blindly copying it will be bad. We must 291170530Ssam * install the legacy rate est in ni_rates and the 292170530Ssam * HT rate set in ni_htrates. 293170530Ssam */ 294170530Ssam ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); 295183251Ssam /* 296183251Ssam * Setup bss tx parameters based on operating mode. We 297183251Ssam * use legacy rates when operating in a mixed HT+non-HT bss 298183251Ssam * and non-ERP rates in 11g for mixed ERP+non-ERP bss. 299183251Ssam */ 300183251Ssam if (mode == IEEE80211_MODE_11NA && 301193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) 302183251Ssam mode = IEEE80211_MODE_11A; 303183251Ssam else if (mode == IEEE80211_MODE_11NG && 304193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) 305183251Ssam mode = IEEE80211_MODE_11G; 306183251Ssam if (mode == IEEE80211_MODE_11G && 307183251Ssam (vap->iv_flags & IEEE80211_F_PUREG) == 0) 308183251Ssam mode = IEEE80211_MODE_11B; 309170530Ssam } 310183251Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 311165569Ssam ni->ni_rates = *ieee80211_get_suprates(ic, chan); 312138568Ssam} 313138568Ssam 314141658Ssamstatic __inline void 315141658Ssamcopy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) 316141658Ssam{ 317141658Ssam /* propagate useful state */ 318141658Ssam nbss->ni_authmode = obss->ni_authmode; 319141658Ssam nbss->ni_txpower = obss->ni_txpower; 320141658Ssam nbss->ni_vlan = obss->ni_vlan; 321141658Ssam /* XXX statistics? */ 322178354Ssam /* XXX legacy WDS bssid? */ 323141658Ssam} 324141658Ssam 325116742Ssamvoid 326178354Ssamieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) 327116742Ssam{ 328178354Ssam struct ieee80211com *ic = vap->iv_ic; 329116742Ssam struct ieee80211_node *ni; 330116742Ssam 331178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 332195618Srpaulo "%s: creating %s on channel %u\n", __func__, 333195618Srpaulo ieee80211_opmode_name[vap->iv_opmode], 334178354Ssam ieee80211_chan2ieee(ic, chan)); 335138568Ssam 336178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 337140753Ssam if (ni == NULL) { 338140753Ssam /* XXX recovery? */ 339138568Ssam return; 340138568Ssam } 341178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 342178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 343178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 344178354Ssam if (vap->iv_bss != NULL) 345178354Ssam copy_bss(ni, vap->iv_bss); 346148843Ssam ni->ni_intval = ic->ic_bintval; 347178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) 348116742Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 349116742Ssam if (ic->ic_phytype == IEEE80211_T_FH) { 350116742Ssam ni->ni_fhdwell = 200; /* XXX */ 351116742Ssam ni->ni_fhindex = 1; 352116742Ssam } 353178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 354178354Ssam vap->iv_flags |= IEEE80211_F_SIBSS; 355138568Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ 356178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 357178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 358167282Ssam else { 359167282Ssam get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN); 360167282Ssam /* clear group bit, add local bit */ 361167282Ssam ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; 362167282Ssam } 363178354Ssam } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 364178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 365178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 366153403Ssam else 367186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 368186904Ssam if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) 369186904Ssam#endif 370153403Ssam memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 371195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 372195618Srpaulo } else if (vap->iv_opmode == IEEE80211_M_MBSS) { 373195618Srpaulo ni->ni_meshidlen = vap->iv_mesh->ms_idlen; 374195618Srpaulo memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen); 375195618Srpaulo#endif 376138568Ssam } 377138568Ssam /* 378138568Ssam * Fix the channel and related attributes. 379138568Ssam */ 380178354Ssam /* clear DFS CAC state on previous channel */ 381178354Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && 382178354Ssam ic->ic_bsschan->ic_freq != chan->ic_freq && 383178354Ssam IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) 384178354Ssam ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); 385170530Ssam ic->ic_bsschan = chan; 386178354Ssam ieee80211_node_set_chan(ni, chan); 387170530Ssam ic->ic_curmode = ieee80211_chan2mode(chan); 388138568Ssam /* 389178354Ssam * Do mode-specific setup. 390138568Ssam */ 391170530Ssam if (IEEE80211_IS_CHAN_FULL(chan)) { 392170530Ssam if (IEEE80211_IS_CHAN_ANYG(chan)) { 393170530Ssam /* 394178354Ssam * Use a mixed 11b/11g basic rate set. 395170530Ssam */ 396178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 397178354Ssam IEEE80211_MODE_11G); 398178354Ssam if (vap->iv_flags & IEEE80211_F_PUREG) { 399178354Ssam /* 400178354Ssam * Also mark OFDM rates basic so 11b 401178354Ssam * stations do not join (WiFi compliance). 402178354Ssam */ 403178354Ssam ieee80211_addbasicrates(&ni->ni_rates, 404178354Ssam IEEE80211_MODE_11A); 405178354Ssam } 406170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 407170530Ssam /* 408170530Ssam * Force pure 11b rate set. 409170530Ssam */ 410178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 411170530Ssam IEEE80211_MODE_11B); 412170530Ssam } 413170530Ssam } 414138568Ssam 415170530Ssam (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); 416116742Ssam} 417116742Ssam 418170530Ssam/* 419170530Ssam * Reset bss state on transition to the INIT state. 420170530Ssam * Clear any stations from the table (they have been 421170530Ssam * deauth'd) and reset the bss node (clears key, rate 422170530Ssam * etc. state). 423170530Ssam */ 424138568Ssamvoid 425178354Ssamieee80211_reset_bss(struct ieee80211vap *vap) 426138568Ssam{ 427178354Ssam struct ieee80211com *ic = vap->iv_ic; 428138568Ssam struct ieee80211_node *ni, *obss; 429138568Ssam 430178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 431178354Ssam /* XXX multi-bss: wrong */ 432170530Ssam ieee80211_reset_erp(ic); 433140753Ssam 434178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 435138568Ssam KASSERT(ni != NULL, ("unable to setup inital BSS node")); 436178354Ssam obss = vap->iv_bss; 437178354Ssam vap->iv_bss = ieee80211_ref_node(ni); 438141658Ssam if (obss != NULL) { 439141658Ssam copy_bss(ni, obss); 440148843Ssam ni->ni_intval = ic->ic_bintval; 441138568Ssam ieee80211_free_node(obss); 442178354Ssam } else 443178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 444138568Ssam} 445138568Ssam 446170530Ssamstatic int 447170530Ssammatch_ssid(const struct ieee80211_node *ni, 448170530Ssam int nssid, const struct ieee80211_scan_ssid ssids[]) 449170530Ssam{ 450170530Ssam int i; 451148432Ssam 452170530Ssam for (i = 0; i < nssid; i++) { 453170530Ssam if (ni->ni_esslen == ssids[i].len && 454170530Ssam memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) 455170530Ssam return 1; 456170530Ssam } 457170530Ssam return 0; 458170530Ssam} 459170530Ssam 460170530Ssam/* 461170530Ssam * Test a node for suitability/compatibility. 462170530Ssam */ 463127767Ssamstatic int 464178354Ssamcheck_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) 465127767Ssam{ 466178354Ssam struct ieee80211com *ic = ni->ni_ic; 467170530Ssam uint8_t rate; 468170530Ssam 469170530Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 470170530Ssam return 0; 471178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 472170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 473170530Ssam return 0; 474170530Ssam } else { 475170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 476170530Ssam return 0; 477170530Ssam } 478178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 479170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 480170530Ssam return 0; 481170530Ssam } else { 482170530Ssam /* XXX does this mean privacy is supported or required? */ 483170530Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 484170530Ssam return 0; 485170530Ssam } 486170530Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 487170530Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 488170530Ssam if (rate & IEEE80211_RATE_BASIC) 489170530Ssam return 0; 490178354Ssam if (vap->iv_des_nssid != 0 && 491178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 492170530Ssam return 0; 493178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 494178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 495170530Ssam return 0; 496170530Ssam return 1; 497170530Ssam} 498170530Ssam 499170530Ssam#ifdef IEEE80211_DEBUG 500170530Ssam/* 501170530Ssam * Display node suitability/compatibility. 502170530Ssam */ 503170530Ssamstatic void 504178354Ssamcheck_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) 505170530Ssam{ 506178354Ssam struct ieee80211com *ic = ni->ni_ic; 507170530Ssam uint8_t rate; 508127767Ssam int fail; 509127767Ssam 510127767Ssam fail = 0; 511127767Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 512127767Ssam fail |= 0x01; 513178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 514127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 515127767Ssam fail |= 0x02; 516127767Ssam } else { 517127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 518127767Ssam fail |= 0x02; 519127767Ssam } 520178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 521127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 522127767Ssam fail |= 0x04; 523127767Ssam } else { 524127767Ssam /* XXX does this mean privacy is supported or required? */ 525127767Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 526127767Ssam fail |= 0x04; 527127767Ssam } 528167442Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 529165887Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 530127767Ssam if (rate & IEEE80211_RATE_BASIC) 531127767Ssam fail |= 0x08; 532178354Ssam if (vap->iv_des_nssid != 0 && 533178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 534127767Ssam fail |= 0x10; 535178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 536178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 537127767Ssam fail |= 0x20; 538127767Ssam 539170530Ssam printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); 540170530Ssam printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); 541170530Ssam printf(" %3d%c", 542170530Ssam ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); 543170530Ssam printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 544170530Ssam fail & 0x08 ? '!' : ' '); 545170530Ssam printf(" %4s%c", 546170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : 547170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : 548170530Ssam "????", 549170530Ssam fail & 0x02 ? '!' : ' '); 550170530Ssam printf(" %3s%c ", 551170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", 552170530Ssam fail & 0x04 ? '!' : ' '); 553170530Ssam ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 554170530Ssam printf("%s\n", fail & 0x10 ? "!" : ""); 555138568Ssam} 556170530Ssam#endif /* IEEE80211_DEBUG */ 557138568Ssam 558138568Ssam/* 559138568Ssam * Handle 802.11 ad hoc network merge. The 560138568Ssam * convention, set by the Wireless Ethernet Compatibility Alliance 561138568Ssam * (WECA), is that an 802.11 station will change its BSSID to match 562138568Ssam * the "oldest" 802.11 ad hoc network, on the same channel, that 563138568Ssam * has the station's desired SSID. The "oldest" 802.11 network 564138568Ssam * sends beacons with the greatest TSF timestamp. 565138568Ssam * 566138568Ssam * The caller is assumed to validate TSF's before attempting a merge. 567138568Ssam * 568138568Ssam * Return !0 if the BSSID changed, 0 otherwise. 569138568Ssam */ 570138568Ssamint 571148306Ssamieee80211_ibss_merge(struct ieee80211_node *ni) 572138568Ssam{ 573178354Ssam struct ieee80211vap *vap = ni->ni_vap; 574178354Ssam#ifdef IEEE80211_DEBUG 575148306Ssam struct ieee80211com *ic = ni->ni_ic; 576178354Ssam#endif 577138568Ssam 578178354Ssam if (ni == vap->iv_bss || 579178354Ssam IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { 580138568Ssam /* unchanged, nothing to do */ 581138568Ssam return 0; 582138568Ssam } 583178354Ssam if (!check_bss(vap, ni)) { 584170530Ssam /* capabilities mismatch */ 585178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 586138568Ssam "%s: merge failed, capabilities mismatch\n", __func__); 587170530Ssam#ifdef IEEE80211_DEBUG 588178354Ssam if (ieee80211_msg_assoc(vap)) 589178354Ssam check_bss_debug(vap, ni); 590170530Ssam#endif 591178354Ssam vap->iv_stats.is_ibss_capmismatch++; 592138568Ssam return 0; 593138568Ssam } 594178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 595138568Ssam "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, 596138568Ssam ether_sprintf(ni->ni_bssid), 597138568Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 598138568Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 599138568Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "" 600138568Ssam ); 601170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 602138568Ssam} 603138568Ssam 604138568Ssam/* 605178354Ssam * Calculate HT channel promotion flags for all vaps. 606178354Ssam * This assumes ni_chan have been setup for each vap. 607173273Ssam */ 608178354Ssamstatic int 609178354Ssamgethtadjustflags(struct ieee80211com *ic) 610178354Ssam{ 611178354Ssam struct ieee80211vap *vap; 612178354Ssam int flags; 613178354Ssam 614178354Ssam flags = 0; 615178354Ssam /* XXX locking */ 616178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 617178354Ssam if (vap->iv_state < IEEE80211_S_RUN) 618178354Ssam continue; 619178354Ssam switch (vap->iv_opmode) { 620178354Ssam case IEEE80211_M_WDS: 621178354Ssam case IEEE80211_M_STA: 622178354Ssam case IEEE80211_M_AHDEMO: 623178354Ssam case IEEE80211_M_HOSTAP: 624178354Ssam case IEEE80211_M_IBSS: 625195618Srpaulo case IEEE80211_M_MBSS: 626178354Ssam flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); 627178354Ssam break; 628178354Ssam default: 629178354Ssam break; 630178354Ssam } 631178354Ssam } 632178354Ssam return flags; 633178354Ssam} 634178354Ssam 635178354Ssam/* 636178354Ssam * Check if the current channel needs to change based on whether 637184303Ssam * any vap's are using HT20/HT40. This is used to sync the state 638184303Ssam * of ic_curchan after a channel width change on a running vap. 639178354Ssam */ 640173273Ssamvoid 641178354Ssamieee80211_sync_curchan(struct ieee80211com *ic) 642173273Ssam{ 643178354Ssam struct ieee80211_channel *c; 644178354Ssam 645178354Ssam c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); 646178354Ssam if (c != ic->ic_curchan) { 647178354Ssam ic->ic_curchan = c; 648178354Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 649190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 650191746Sthompsa IEEE80211_UNLOCK(ic); 651178354Ssam ic->ic_set_channel(ic); 652192468Ssam ieee80211_radiotap_chan_change(ic); 653191746Sthompsa IEEE80211_LOCK(ic); 654178354Ssam } 655178354Ssam} 656178354Ssam 657178354Ssam/* 658191746Sthompsa * Setup the current channel. The request channel may be 659178354Ssam * promoted if other vap's are operating with HT20/HT40. 660178354Ssam */ 661178354Ssamvoid 662191746Sthompsaieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 663178354Ssam{ 664178354Ssam if (ic->ic_htcaps & IEEE80211_HTC_HT) { 665178354Ssam int flags = gethtadjustflags(ic); 666178354Ssam /* 667178354Ssam * Check for channel promotion required to support the 668178354Ssam * set of running vap's. This assumes we are called 669178354Ssam * after ni_chan is setup for each vap. 670178354Ssam */ 671193655Ssam /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */ 672178354Ssam if (flags > ieee80211_htchanflags(c)) 673178354Ssam c = ieee80211_ht_adjust_channel(ic, c, flags); 674178354Ssam } 675178354Ssam ic->ic_bsschan = ic->ic_curchan = c; 676173273Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 677190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 678173273Ssam} 679173273Ssam 680173273Ssam/* 681191746Sthompsa * Change the current channel. The channel change is guaranteed to have 682191746Sthompsa * happened before the next state change. 683191746Sthompsa */ 684191746Sthompsavoid 685191746Sthompsaieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 686191746Sthompsa{ 687191746Sthompsa ieee80211_setupcurchan(ic, c); 688191746Sthompsa ieee80211_runtask(ic, &ic->ic_chan_task); 689191746Sthompsa} 690191746Sthompsa 691191746Sthompsa/* 692138568Ssam * Join the specified IBSS/BSS network. The node is assumed to 693138568Ssam * be passed in with a held reference. 694138568Ssam */ 695170530Ssamstatic int 696170530Ssamieee80211_sta_join1(struct ieee80211_node *selbs) 697138568Ssam{ 698178354Ssam struct ieee80211vap *vap = selbs->ni_vap; 699170530Ssam struct ieee80211com *ic = selbs->ni_ic; 700138568Ssam struct ieee80211_node *obss; 701170530Ssam int canreassoc; 702138568Ssam 703138568Ssam /* 704138568Ssam * Committed to selbs, setup state. 705138568Ssam */ 706178354Ssam obss = vap->iv_bss; 707170530Ssam /* 708170530Ssam * Check if old+new node have the same address in which 709170530Ssam * case we can reassociate when operating in sta mode. 710170530Ssam */ 711170530Ssam canreassoc = (obss != NULL && 712178354Ssam vap->iv_state == IEEE80211_S_RUN && 713170530Ssam IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); 714178354Ssam vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */ 715153352Ssam if (obss != NULL) { 716153352Ssam copy_bss(selbs, obss); 717188541Ssam ieee80211_node_decref(obss); /* iv_bss reference */ 718188541Ssam ieee80211_free_node(obss); /* station table reference */ 719178354Ssam obss = NULL; /* NB: guard against later use */ 720153352Ssam } 721165887Ssam 722138568Ssam /* 723165887Ssam * Delete unusable rates; we've already checked 724165887Ssam * that the negotiated rate set is acceptable. 725165887Ssam */ 726178354Ssam ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, 727167442Ssam IEEE80211_F_DODEL | IEEE80211_F_JOIN); 728165887Ssam 729178354Ssam ieee80211_setcurchan(ic, selbs->ni_chan); 730165887Ssam /* 731138568Ssam * Set the erp state (mostly the slot time) to deal with 732138568Ssam * the auto-select case; this should be redundant if the 733138568Ssam * mode is locked. 734138568Ssam */ 735138568Ssam ieee80211_reset_erp(ic); 736178354Ssam ieee80211_wme_initparams(vap); 737140753Ssam 738178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 739170530Ssam if (canreassoc) { 740170530Ssam /* Reassociate */ 741178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 742170530Ssam } else { 743170530Ssam /* 744170530Ssam * Act as if we received a DEAUTH frame in case we 745170530Ssam * are invoked from the RUN state. This will cause 746170530Ssam * us to try to re-authenticate if we are operating 747170530Ssam * as a station. 748170530Ssam */ 749178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 750170530Ssam IEEE80211_FC0_SUBTYPE_DEAUTH); 751170530Ssam } 752170530Ssam } else 753178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 754138568Ssam return 1; 755116742Ssam} 756116742Ssam 757170530Ssamint 758184274Ssamieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, 759170530Ssam const struct ieee80211_scan_entry *se) 760170530Ssam{ 761178354Ssam struct ieee80211com *ic = vap->iv_ic; 762170530Ssam struct ieee80211_node *ni; 763170530Ssam 764178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr); 765170530Ssam if (ni == NULL) { 766170530Ssam /* XXX msg */ 767170530Ssam return 0; 768170530Ssam } 769170530Ssam /* 770170530Ssam * Expand scan state into node's format. 771170530Ssam * XXX may not need all this stuff 772170530Ssam */ 773170530Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); 774170530Ssam ni->ni_esslen = se->se_ssid[1]; 775170530Ssam memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); 776170530Ssam ni->ni_tstamp.tsf = se->se_tstamp.tsf; 777170530Ssam ni->ni_intval = se->se_intval; 778170530Ssam ni->ni_capinfo = se->se_capinfo; 779184274Ssam ni->ni_chan = chan; 780170530Ssam ni->ni_timoff = se->se_timoff; 781170530Ssam ni->ni_fhdwell = se->se_fhdwell; 782170530Ssam ni->ni_fhindex = se->se_fhindex; 783170530Ssam ni->ni_erp = se->se_erp; 784178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); 785170530Ssam ni->ni_noise = se->se_noise; 786186870Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 787186870Ssam /* NB: only infrastructure mode requires an associd */ 788186870Ssam ni->ni_flags |= IEEE80211_NODE_ASSOCID; 789186870Ssam } 790178354Ssam 791178354Ssam if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { 792178354Ssam ieee80211_ies_expand(&ni->ni_ies); 793190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 794178354Ssam if (ni->ni_ies.ath_ie != NULL) 795178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 796190391Ssam#endif 797178354Ssam if (ni->ni_ies.htcap_ie != NULL) 798178354Ssam ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); 799178354Ssam if (ni->ni_ies.htinfo_ie != NULL) 800178354Ssam ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); 801195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 802195618Srpaulo if (ni->ni_ies.meshid_ie != NULL) 803195618Srpaulo ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie); 804195618Srpaulo#endif 805186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 806186904Ssam if (ni->ni_ies.tdma_ie != NULL) 807186904Ssam ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); 808186904Ssam#endif 809173864Ssam } 810170530Ssam 811178354Ssam vap->iv_dtim_period = se->se_dtimperiod; 812178354Ssam vap->iv_dtim_count = 0; 813170530Ssam 814170530Ssam /* NB: must be after ni_chan is setup */ 815170530Ssam ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, 816170530Ssam IEEE80211_F_DOSORT); 817184279Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 818184279Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 819193966Ssam ieee80211_node_setuptxparms(ni); 820170530Ssam 821170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 822170530Ssam} 823170530Ssam 824138568Ssam/* 825138568Ssam * Leave the specified IBSS/BSS network. The node is assumed to 826138568Ssam * be passed in with a held reference. 827138568Ssam */ 828138568Ssamvoid 829178354Ssamieee80211_sta_leave(struct ieee80211_node *ni) 830138568Ssam{ 831178354Ssam struct ieee80211com *ic = ni->ni_ic; 832178354Ssam 833138568Ssam ic->ic_node_cleanup(ni); 834178354Ssam ieee80211_notify_node_leave(ni); 835138568Ssam} 836138568Ssam 837178354Ssam/* 838178354Ssam * Send a deauthenticate frame and drop the station. 839178354Ssam */ 840178354Ssamvoid 841178354Ssamieee80211_node_deauth(struct ieee80211_node *ni, int reason) 842178354Ssam{ 843178354Ssam /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */ 844178354Ssam ieee80211_ref_node(ni); 845178354Ssam if (ni->ni_associd != 0) 846178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); 847178354Ssam ieee80211_node_leave(ni); 848178354Ssam ieee80211_free_node(ni); 849178354Ssam} 850178354Ssam 851116742Ssamstatic struct ieee80211_node * 852179643Ssamnode_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 853116742Ssam{ 854127768Ssam struct ieee80211_node *ni; 855138568Ssam 856186302Ssam ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node), 857127768Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 858127768Ssam return ni; 859116742Ssam} 860116742Ssam 861138568Ssam/* 862178354Ssam * Initialize an ie blob with the specified data. If previous 863178354Ssam * data exists re-use the data block. As a side effect we clear 864178354Ssam * all references to specific ie's; the caller is required to 865178354Ssam * recalculate them. 866178354Ssam */ 867178354Ssamint 868178354Ssamieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) 869178354Ssam{ 870178354Ssam /* NB: assumes data+len are the last fields */ 871178354Ssam memset(ies, 0, offsetof(struct ieee80211_ies, data)); 872178354Ssam if (ies->data != NULL && ies->len != len) { 873178354Ssam /* data size changed */ 874186302Ssam free(ies->data, M_80211_NODE_IE); 875178354Ssam ies->data = NULL; 876178354Ssam } 877178354Ssam if (ies->data == NULL) { 878186302Ssam ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT); 879178354Ssam if (ies->data == NULL) { 880178354Ssam ies->len = 0; 881178354Ssam /* NB: pointers have already been zero'd above */ 882178354Ssam return 0; 883178354Ssam } 884178354Ssam } 885178354Ssam memcpy(ies->data, data, len); 886178354Ssam ies->len = len; 887178354Ssam return 1; 888178354Ssam} 889178354Ssam 890178354Ssam/* 891178354Ssam * Reclaim storage for an ie blob. 892178354Ssam */ 893178354Ssamvoid 894178354Ssamieee80211_ies_cleanup(struct ieee80211_ies *ies) 895178354Ssam{ 896178354Ssam if (ies->data != NULL) 897186302Ssam free(ies->data, M_80211_NODE_IE); 898178354Ssam} 899178354Ssam 900178354Ssam/* 901178354Ssam * Expand an ie blob data contents and to fillin individual 902178354Ssam * ie pointers. The data blob is assumed to be well-formed; 903178354Ssam * we don't do any validity checking of ie lengths. 904178354Ssam */ 905178354Ssamvoid 906178354Ssamieee80211_ies_expand(struct ieee80211_ies *ies) 907178354Ssam{ 908178354Ssam uint8_t *ie; 909178354Ssam int ielen; 910178354Ssam 911178354Ssam ie = ies->data; 912178354Ssam ielen = ies->len; 913178354Ssam while (ielen > 0) { 914178354Ssam switch (ie[0]) { 915178354Ssam case IEEE80211_ELEMID_VENDOR: 916178354Ssam if (iswpaoui(ie)) 917178354Ssam ies->wpa_ie = ie; 918178354Ssam else if (iswmeoui(ie)) 919178354Ssam ies->wme_ie = ie; 920190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 921178354Ssam else if (isatherosoui(ie)) 922178354Ssam ies->ath_ie = ie; 923190391Ssam#endif 924186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 925186904Ssam else if (istdmaoui(ie)) 926186904Ssam ies->tdma_ie = ie; 927186904Ssam#endif 928178354Ssam break; 929178354Ssam case IEEE80211_ELEMID_RSN: 930178354Ssam ies->rsn_ie = ie; 931178354Ssam break; 932178354Ssam case IEEE80211_ELEMID_HTCAP: 933178354Ssam ies->htcap_ie = ie; 934178354Ssam break; 935195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 936195618Srpaulo case IEEE80211_ELEMID_MESHID: 937195618Srpaulo ies->meshid_ie = ie; 938195618Srpaulo break; 939195618Srpaulo#endif 940178354Ssam } 941178354Ssam ielen -= 2 + ie[1]; 942178354Ssam ie += 2 + ie[1]; 943178354Ssam } 944178354Ssam} 945178354Ssam 946178354Ssam/* 947138568Ssam * Reclaim any resources in a node and reset any critical 948138568Ssam * state. Typically nodes are free'd immediately after, 949138568Ssam * but in some cases the storage may be reused so we need 950138568Ssam * to insure consistent state (should probably fix that). 951138568Ssam */ 952116742Ssamstatic void 953138568Ssamnode_cleanup(struct ieee80211_node *ni) 954116742Ssam{ 955138568Ssam#define N(a) (sizeof(a)/sizeof(a[0])) 956178354Ssam struct ieee80211vap *vap = ni->ni_vap; 957195379Ssam struct ieee80211com *ic = ni->ni_ic; 958170530Ssam int i; 959138568Ssam 960138568Ssam /* NB: preserve ni_table */ 961138568Ssam if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { 962178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 963178354Ssam vap->iv_ps_sta--; 964138568Ssam ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; 965178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, 966178354Ssam "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); 967138568Ssam } 968147788Ssam /* 969173273Ssam * Cleanup any HT-related state. 970173273Ssam */ 971173273Ssam if (ni->ni_flags & IEEE80211_NODE_HT) 972173273Ssam ieee80211_ht_node_cleanup(ni); 973190579Ssam#ifdef IEEE80211_SUPPORT_SUPERG 974190579Ssam else if (ni->ni_ath_flags & IEEE80211_NODE_ATH) 975190579Ssam ieee80211_ff_node_cleanup(ni); 976190579Ssam#endif 977195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 978173273Ssam /* 979195618Srpaulo * Cleanup any mesh-related state. 980195618Srpaulo */ 981195618Srpaulo if (vap->iv_opmode == IEEE80211_M_MBSS) 982195618Srpaulo ieee80211_mesh_node_cleanup(ni); 983195618Srpaulo#endif 984195618Srpaulo /* 985195379Ssam * Clear any staging queue entries. 986195379Ssam */ 987195379Ssam ieee80211_ageq_drain_node(&ic->ic_stageq, ni); 988195379Ssam 989195379Ssam /* 990147788Ssam * Clear AREF flag that marks the authorization refcnt bump 991147788Ssam * has happened. This is probably not needed as the node 992147788Ssam * should always be removed from the table so not found but 993147788Ssam * do it just in case. 994186099Ssam * Likewise clear the ASSOCID flag as these flags are intended 995186099Ssam * to be managed in tandem. 996147788Ssam */ 997186099Ssam ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); 998138568Ssam 999138568Ssam /* 1000138568Ssam * Drain power save queue and, if needed, clear TIM. 1001138568Ssam */ 1002184288Ssam if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) 1003178354Ssam vap->iv_set_tim(ni, 0); 1004138568Ssam 1005138568Ssam ni->ni_associd = 0; 1006138568Ssam if (ni->ni_challenge != NULL) { 1007186302Ssam free(ni->ni_challenge, M_80211_NODE); 1008138568Ssam ni->ni_challenge = NULL; 1009138568Ssam } 1010138568Ssam /* 1011138568Ssam * Preserve SSID, WPA, and WME ie's so the bss node is 1012138568Ssam * reusable during a re-auth/re-assoc state transition. 1013138568Ssam * If we remove these data they will not be recreated 1014138568Ssam * because they come from a probe-response or beacon frame 1015138568Ssam * which cannot be expected prior to the association-response. 1016138568Ssam * This should not be an issue when operating in other modes 1017138568Ssam * as stations leaving always go through a full state transition 1018138568Ssam * which will rebuild this state. 1019138568Ssam * 1020138568Ssam * XXX does this leave us open to inheriting old state? 1021138568Ssam */ 1022138568Ssam for (i = 0; i < N(ni->ni_rxfrag); i++) 1023138568Ssam if (ni->ni_rxfrag[i] != NULL) { 1024138568Ssam m_freem(ni->ni_rxfrag[i]); 1025138568Ssam ni->ni_rxfrag[i] = NULL; 1026138568Ssam } 1027148863Ssam /* 1028148863Ssam * Must be careful here to remove any key map entry w/o a LOR. 1029148863Ssam */ 1030148863Ssam ieee80211_node_delucastkey(ni); 1031138568Ssam#undef N 1032116742Ssam} 1033116742Ssam 1034116742Ssamstatic void 1035138568Ssamnode_free(struct ieee80211_node *ni) 1036116742Ssam{ 1037138568Ssam struct ieee80211com *ic = ni->ni_ic; 1038138568Ssam 1039206358Srpaulo ieee80211_ratectl_node_deinit(ni); 1040138568Ssam ic->ic_node_cleanup(ni); 1041178354Ssam ieee80211_ies_cleanup(&ni->ni_ies); 1042184288Ssam ieee80211_psq_cleanup(&ni->ni_psq); 1043186302Ssam free(ni, M_80211_NODE); 1044116742Ssam} 1045116742Ssam 1046178354Ssamstatic void 1047178354Ssamnode_age(struct ieee80211_node *ni) 1048178354Ssam{ 1049178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1050184303Ssam 1051184303Ssam IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta); 1052184303Ssam 1053178354Ssam /* 1054178354Ssam * Age frames on the power save queue. 1055178354Ssam */ 1056184288Ssam if (ieee80211_node_psq_age(ni) != 0 && 1057184288Ssam ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) 1058178354Ssam vap->iv_set_tim(ni, 0); 1059178354Ssam /* 1060178354Ssam * Age out HT resources (e.g. frames on the 1061178354Ssam * A-MPDU reorder queues). 1062178354Ssam */ 1063178354Ssam if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) 1064178354Ssam ieee80211_ht_node_age(ni); 1065178354Ssam} 1066178354Ssam 1067170530Ssamstatic int8_t 1068138568Ssamnode_getrssi(const struct ieee80211_node *ni) 1069120104Ssam{ 1070178354Ssam uint32_t avgrssi = ni->ni_avgrssi; 1071178354Ssam int32_t rssi; 1072178354Ssam 1073178354Ssam if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) 1074178354Ssam return 0; 1075178354Ssam rssi = IEEE80211_RSSI_GET(avgrssi); 1076178354Ssam return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; 1077120104Ssam} 1078120104Ssam 1079116742Ssamstatic void 1080170530Ssamnode_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) 1081170530Ssam{ 1082178354Ssam *rssi = node_getrssi(ni); 1083170530Ssam *noise = ni->ni_noise; 1084170530Ssam} 1085170530Ssam 1086170530Ssamstatic void 1087178354Ssamnode_getmimoinfo(const struct ieee80211_node *ni, 1088178354Ssam struct ieee80211_mimo_info *info) 1089116742Ssam{ 1090178354Ssam /* XXX zero data? */ 1091178354Ssam} 1092178354Ssam 1093178354Ssamstruct ieee80211_node * 1094178354Ssamieee80211_alloc_node(struct ieee80211_node_table *nt, 1095178354Ssam struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1096178354Ssam{ 1097138568Ssam struct ieee80211com *ic = nt->nt_ic; 1098178354Ssam struct ieee80211_node *ni; 1099116742Ssam int hash; 1100116742Ssam 1101179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1102178354Ssam if (ni == NULL) { 1103178354Ssam vap->iv_stats.is_rx_nodealloc++; 1104178354Ssam return NULL; 1105178354Ssam } 1106178354Ssam 1107178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1108140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1109138568Ssam ether_sprintf(macaddr), nt->nt_name); 1110138568Ssam 1111116742Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1112195618Srpaulo hash = IEEE80211_NODE_HASH(ic, macaddr); 1113138568Ssam ieee80211_node_initref(ni); /* mark referenced */ 1114138568Ssam ni->ni_chan = IEEE80211_CHAN_ANYC; 1115138568Ssam ni->ni_authmode = IEEE80211_AUTH_OPEN; 1116138568Ssam ni->ni_txpower = ic->ic_txpowlimit; /* max power */ 1117183251Ssam ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 1118178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); 1119178354Ssam ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; 1120139528Ssam ni->ni_inact_reload = nt->nt_inact_init; 1121139528Ssam ni->ni_inact = ni->ni_inact_reload; 1122170530Ssam ni->ni_ath_defkeyix = 0x7fff; 1123184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1124195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 1125195618Srpaulo if (vap->iv_opmode == IEEE80211_M_MBSS) 1126195618Srpaulo ieee80211_mesh_node_init(vap, ni); 1127195618Srpaulo#endif 1128138568Ssam IEEE80211_NODE_LOCK(nt); 1129138568Ssam TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); 1130138568Ssam LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); 1131138568Ssam ni->ni_table = nt; 1132178354Ssam ni->ni_vap = vap; 1133138568Ssam ni->ni_ic = ic; 1134138568Ssam IEEE80211_NODE_UNLOCK(nt); 1135116742Ssam 1136184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1137184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 1138184277Ssam 1139116742Ssam return ni; 1140116742Ssam} 1141116742Ssam 1142148777Ssam/* 1143148777Ssam * Craft a temporary node suitable for sending a management frame 1144148777Ssam * to the specified station. We craft only as much state as we 1145148777Ssam * need to do the work since the node will be immediately reclaimed 1146148777Ssam * once the send completes. 1147148777Ssam */ 1148116742Ssamstruct ieee80211_node * 1149178354Ssamieee80211_tmp_node(struct ieee80211vap *vap, 1150178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1151148777Ssam{ 1152178354Ssam struct ieee80211com *ic = vap->iv_ic; 1153148777Ssam struct ieee80211_node *ni; 1154148777Ssam 1155179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1156148777Ssam if (ni != NULL) { 1157183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1158183259Ssam 1159178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1160148777Ssam "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); 1161148777Ssam 1162178354Ssam ni->ni_table = NULL; /* NB: pedantic */ 1163178354Ssam ni->ni_ic = ic; /* NB: needed to set channel */ 1164178354Ssam ni->ni_vap = vap; 1165178354Ssam 1166148777Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1167183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1168148777Ssam ieee80211_node_initref(ni); /* mark referenced */ 1169148777Ssam /* NB: required by ieee80211_fix_rate */ 1170183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1171178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, 1172148777Ssam IEEE80211_KEYIX_NONE); 1173183259Ssam ni->ni_txpower = bss->ni_txpower; 1174148777Ssam /* XXX optimize away */ 1175184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1176148777Ssam } else { 1177148777Ssam /* XXX msg */ 1178178354Ssam vap->iv_stats.is_rx_nodealloc++; 1179148777Ssam } 1180148777Ssam return ni; 1181148777Ssam} 1182148777Ssam 1183148777Ssamstruct ieee80211_node * 1184178354Ssamieee80211_dup_bss(struct ieee80211vap *vap, 1185178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1186116742Ssam{ 1187178354Ssam struct ieee80211com *ic = vap->iv_ic; 1188138568Ssam struct ieee80211_node *ni; 1189138568Ssam 1190178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr); 1191116742Ssam if (ni != NULL) { 1192183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1193127770Ssam /* 1194178354Ssam * Inherit from iv_bss. 1195127770Ssam */ 1196183259Ssam copy_bss(ni, bss); 1197183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1198183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1199178354Ssam } 1200116742Ssam return ni; 1201116742Ssam} 1202116742Ssam 1203178354Ssam/* 1204178354Ssam * Create a bss node for a legacy WDS vap. The far end does 1205178354Ssam * not associate so we just create create a new node and 1206178354Ssam * simulate an association. The caller is responsible for 1207178354Ssam * installing the node as the bss node and handling any further 1208178354Ssam * setup work like authorizing the port. 1209178354Ssam */ 1210178354Ssamstruct ieee80211_node * 1211178354Ssamieee80211_node_create_wds(struct ieee80211vap *vap, 1212178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) 1213178354Ssam{ 1214178354Ssam struct ieee80211com *ic = vap->iv_ic; 1215178354Ssam struct ieee80211_node *ni; 1216178354Ssam 1217178354Ssam /* XXX check if node already in sta table? */ 1218178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid); 1219178354Ssam if (ni != NULL) { 1220178354Ssam ni->ni_wdsvap = vap; 1221178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); 1222178354Ssam /* 1223178354Ssam * Inherit any manually configured settings. 1224178354Ssam */ 1225183259Ssam copy_bss(ni, vap->iv_bss); 1226178354Ssam ieee80211_node_set_chan(ni, chan); 1227178354Ssam /* NB: propagate ssid so available to WPA supplicant */ 1228178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 1229178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 1230178354Ssam /* NB: no associd for peer */ 1231178354Ssam /* 1232178354Ssam * There are no management frames to use to 1233178354Ssam * discover neighbor capabilities, so blindly 1234178354Ssam * propagate the local configuration. 1235178354Ssam */ 1236178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1237178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1238190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1239178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1240178354Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1241190391Ssam#endif 1242178354Ssam if ((ic->ic_htcaps & IEEE80211_HTC_HT) && 1243193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1244178354Ssam /* 1245178354Ssam * Device is HT-capable and HT is enabled for 1246178354Ssam * the vap; setup HT operation. On return 1247178354Ssam * ni_chan will be adjusted to an HT channel. 1248178354Ssam */ 1249178354Ssam ieee80211_ht_wds_init(ni); 1250178354Ssam } else { 1251178354Ssam struct ieee80211_channel *c = ni->ni_chan; 1252178354Ssam /* 1253178354Ssam * Force a legacy channel to be used. 1254178354Ssam */ 1255178354Ssam c = ieee80211_find_channel(ic, 1256178354Ssam c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); 1257178354Ssam KASSERT(c != NULL, ("no legacy channel, %u/%x", 1258178354Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); 1259178354Ssam ni->ni_chan = c; 1260178354Ssam } 1261178354Ssam } 1262178354Ssam return ni; 1263178354Ssam} 1264178354Ssam 1265178354Ssamstruct ieee80211_node * 1266138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1267178354Ssamieee80211_find_node_locked_debug(struct ieee80211_node_table *nt, 1268178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1269138568Ssam#else 1270178354Ssamieee80211_find_node_locked(struct ieee80211_node_table *nt, 1271178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1272138568Ssam#endif 1273116742Ssam{ 1274116742Ssam struct ieee80211_node *ni; 1275116742Ssam int hash; 1276116742Ssam 1277138568Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1278127772Ssam 1279195618Srpaulo hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); 1280138568Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1281116742Ssam if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1282138568Ssam ieee80211_ref_node(ni); /* mark referenced */ 1283138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1284178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1285140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1286140766Ssam func, line, 1287140766Ssam ni, ether_sprintf(ni->ni_macaddr), 1288140766Ssam ieee80211_node_refcnt(ni)); 1289138568Ssam#endif 1290127772Ssam return ni; 1291116742Ssam } 1292116742Ssam } 1293127772Ssam return NULL; 1294127772Ssam} 1295178354Ssam 1296178354Ssamstruct ieee80211_node * 1297138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1298178354Ssamieee80211_find_node_debug(struct ieee80211_node_table *nt, 1299178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1300178354Ssam#else 1301178354Ssamieee80211_find_node(struct ieee80211_node_table *nt, 1302178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1303138568Ssam#endif 1304178354Ssam{ 1305178354Ssam struct ieee80211_node *ni; 1306127772Ssam 1307178354Ssam IEEE80211_NODE_LOCK(nt); 1308178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1309178354Ssam IEEE80211_NODE_UNLOCK(nt); 1310178354Ssam return ni; 1311178354Ssam} 1312178354Ssam 1313127772Ssamstruct ieee80211_node * 1314138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1315178354Ssamieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt, 1316178354Ssam const struct ieee80211vap *vap, 1317178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1318138568Ssam#else 1319178354Ssamieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, 1320178354Ssam const struct ieee80211vap *vap, 1321178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1322138568Ssam#endif 1323127772Ssam{ 1324127772Ssam struct ieee80211_node *ni; 1325178354Ssam int hash; 1326127772Ssam 1327178354Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1328178354Ssam 1329195618Srpaulo hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); 1330178354Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1331178354Ssam if (ni->ni_vap == vap && 1332178354Ssam IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1333178354Ssam ieee80211_ref_node(ni); /* mark referenced */ 1334178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1335178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1336178354Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1337178354Ssam func, line, 1338178354Ssam ni, ether_sprintf(ni->ni_macaddr), 1339178354Ssam ieee80211_node_refcnt(ni)); 1340178354Ssam#endif 1341178354Ssam return ni; 1342178354Ssam } 1343178354Ssam } 1344178354Ssam return NULL; 1345178354Ssam} 1346178354Ssam 1347178354Ssamstruct ieee80211_node * 1348178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1349178354Ssamieee80211_find_vap_node_debug(struct ieee80211_node_table *nt, 1350178354Ssam const struct ieee80211vap *vap, 1351178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1352178354Ssam#else 1353178354Ssamieee80211_find_vap_node(struct ieee80211_node_table *nt, 1354178354Ssam const struct ieee80211vap *vap, 1355178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1356178354Ssam#endif 1357178354Ssam{ 1358178354Ssam struct ieee80211_node *ni; 1359178354Ssam 1360138568Ssam IEEE80211_NODE_LOCK(nt); 1361178354Ssam ni = ieee80211_find_vap_node_locked(nt, vap, macaddr); 1362138568Ssam IEEE80211_NODE_UNLOCK(nt); 1363116742Ssam return ni; 1364116742Ssam} 1365116742Ssam 1366116742Ssam/* 1367138568Ssam * Fake up a node; this handles node discovery in adhoc mode. 1368138568Ssam * Note that for the driver's benefit we we treat this like 1369138568Ssam * an association so the driver has an opportunity to setup 1370138568Ssam * it's private state. 1371138568Ssam */ 1372138568Ssamstruct ieee80211_node * 1373178354Ssamieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, 1374170530Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1375138568Ssam{ 1376138568Ssam struct ieee80211_node *ni; 1377138568Ssam 1378178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1379153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); 1380178354Ssam ni = ieee80211_dup_bss(vap, macaddr); 1381138568Ssam if (ni != NULL) { 1382178354Ssam struct ieee80211com *ic = vap->iv_ic; 1383178354Ssam 1384138568Ssam /* XXX no rate negotiation; just dup */ 1385178354Ssam ni->ni_rates = vap->iv_bss->ni_rates; 1386188869Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 1387188869Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 1388178354Ssam if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 1389153404Ssam /* 1390170530Ssam * In adhoc demo mode there are no management 1391170530Ssam * frames to use to discover neighbor capabilities, 1392170530Ssam * so blindly propagate the local configuration 1393170530Ssam * so we can do interesting things (e.g. use 1394170530Ssam * WME to disable ACK's). 1395153404Ssam */ 1396178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1397153404Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1398190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1399178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1400170530Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1401190391Ssam#endif 1402153404Ssam } 1403193966Ssam ieee80211_node_setuptxparms(ni); 1404178354Ssam if (ic->ic_newassoc != NULL) 1405178354Ssam ic->ic_newassoc(ni, 1); 1406170530Ssam /* XXX not right for 802.1x/WPA */ 1407170530Ssam ieee80211_node_authorize(ni); 1408138568Ssam } 1409138568Ssam return ni; 1410138568Ssam} 1411138568Ssam 1412148936Ssamvoid 1413153073Ssamieee80211_init_neighbor(struct ieee80211_node *ni, 1414153073Ssam const struct ieee80211_frame *wh, 1415153073Ssam const struct ieee80211_scanparams *sp) 1416153073Ssam{ 1417153073Ssam ni->ni_esslen = sp->ssid[1]; 1418153073Ssam memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); 1419153073Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); 1420153073Ssam memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); 1421153073Ssam ni->ni_intval = sp->bintval; 1422153073Ssam ni->ni_capinfo = sp->capinfo; 1423153073Ssam ni->ni_chan = ni->ni_ic->ic_curchan; 1424153073Ssam ni->ni_fhdwell = sp->fhdwell; 1425153073Ssam ni->ni_fhindex = sp->fhindex; 1426153073Ssam ni->ni_erp = sp->erp; 1427153073Ssam ni->ni_timoff = sp->timoff; 1428195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 1429195618Srpaulo if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS) 1430195618Srpaulo ieee80211_mesh_init_neighbor(ni, wh, sp); 1431195618Srpaulo#endif 1432178354Ssam if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { 1433178354Ssam ieee80211_ies_expand(&ni->ni_ies); 1434186659Ssam if (ni->ni_ies.wme_ie != NULL) 1435186659Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1436186659Ssam else 1437186659Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1438190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1439178354Ssam if (ni->ni_ies.ath_ie != NULL) 1440178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 1441190391Ssam#endif 1442178354Ssam } 1443178354Ssam 1444153073Ssam /* NB: must be after ni_chan is setup */ 1445165887Ssam ieee80211_setup_rates(ni, sp->rates, sp->xrates, 1446165887Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1447165887Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1448153073Ssam} 1449153073Ssam 1450148936Ssam/* 1451148936Ssam * Do node discovery in adhoc mode on receipt of a beacon 1452148936Ssam * or probe response frame. Note that for the driver's 1453148936Ssam * benefit we we treat this like an association so the 1454148936Ssam * driver has an opportunity to setup it's private state. 1455148936Ssam */ 1456148936Ssamstruct ieee80211_node * 1457178354Ssamieee80211_add_neighbor(struct ieee80211vap *vap, 1458148936Ssam const struct ieee80211_frame *wh, 1459148936Ssam const struct ieee80211_scanparams *sp) 1460148936Ssam{ 1461148936Ssam struct ieee80211_node *ni; 1462148936Ssam 1463178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1464153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); 1465178354Ssam ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ 1466148936Ssam if (ni != NULL) { 1467178354Ssam struct ieee80211com *ic = vap->iv_ic; 1468178354Ssam 1469153073Ssam ieee80211_init_neighbor(ni, wh, sp); 1470188869Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 1471188869Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 1472193966Ssam ieee80211_node_setuptxparms(ni); 1473148936Ssam if (ic->ic_newassoc != NULL) 1474148936Ssam ic->ic_newassoc(ni, 1); 1475148936Ssam /* XXX not right for 802.1x/WPA */ 1476148936Ssam ieee80211_node_authorize(ni); 1477148936Ssam } 1478148936Ssam return ni; 1479148936Ssam} 1480148936Ssam 1481179220Ssam#define IS_PROBEREQ(wh) \ 1482179220Ssam ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ 1483179220Ssam == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) 1484179220Ssam#define IS_BCAST_PROBEREQ(wh) \ 1485179220Ssam (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ 1486179220Ssam ((const struct ieee80211_frame *)(wh))->i_addr3)) 1487170530Ssam 1488179220Ssamstatic __inline struct ieee80211_node * 1489179220Ssam_find_rxnode(struct ieee80211_node_table *nt, 1490179220Ssam const struct ieee80211_frame_min *wh) 1491179220Ssam{ 1492179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1493179220Ssam return NULL; /* spam bcast probe req to all vap's */ 1494179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr2); 1495179220Ssam} 1496179220Ssam 1497138568Ssam/* 1498138568Ssam * Locate the node for sender, track state, and then pass the 1499179220Ssam * (referenced) node up to the 802.11 layer for its use. Note 1500179220Ssam * we can return NULL if the sender is not in the table. 1501138568Ssam */ 1502138568Ssamstruct ieee80211_node * 1503138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1504138568Ssamieee80211_find_rxnode_debug(struct ieee80211com *ic, 1505138568Ssam const struct ieee80211_frame_min *wh, const char *func, int line) 1506138568Ssam#else 1507138568Ssamieee80211_find_rxnode(struct ieee80211com *ic, 1508138568Ssam const struct ieee80211_frame_min *wh) 1509138568Ssam#endif 1510138568Ssam{ 1511138568Ssam struct ieee80211_node_table *nt; 1512138568Ssam struct ieee80211_node *ni; 1513138568Ssam 1514170530Ssam nt = &ic->ic_sta; 1515138568Ssam IEEE80211_NODE_LOCK(nt); 1516179220Ssam ni = _find_rxnode(nt, wh); 1517138568Ssam IEEE80211_NODE_UNLOCK(nt); 1518138568Ssam 1519148863Ssam return ni; 1520148863Ssam} 1521148863Ssam 1522148863Ssam/* 1523148863Ssam * Like ieee80211_find_rxnode but use the supplied h/w 1524148863Ssam * key index as a hint to locate the node in the key 1525148863Ssam * mapping table. If an entry is present at the key 1526148863Ssam * index we return it; otherwise do a normal lookup and 1527148863Ssam * update the mapping table if the station has a unicast 1528148863Ssam * key assigned to it. 1529148863Ssam */ 1530148863Ssamstruct ieee80211_node * 1531148863Ssam#ifdef IEEE80211_DEBUG_REFCNT 1532148863Ssamieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic, 1533148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, 1534148863Ssam const char *func, int line) 1535148863Ssam#else 1536148863Ssamieee80211_find_rxnode_withkey(struct ieee80211com *ic, 1537148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix) 1538148863Ssam#endif 1539148863Ssam{ 1540148863Ssam struct ieee80211_node_table *nt; 1541148863Ssam struct ieee80211_node *ni; 1542148863Ssam 1543170530Ssam nt = &ic->ic_sta; 1544148863Ssam IEEE80211_NODE_LOCK(nt); 1545148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) 1546148863Ssam ni = nt->nt_keyixmap[keyix]; 1547148863Ssam else 1548148863Ssam ni = NULL; 1549148863Ssam if (ni == NULL) { 1550179220Ssam ni = _find_rxnode(nt, wh); 1551178354Ssam if (ni != NULL && nt->nt_keyixmap != NULL) { 1552148863Ssam /* 1553148863Ssam * If the station has a unicast key cache slot 1554148863Ssam * assigned update the key->node mapping table. 1555148863Ssam */ 1556148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1557148863Ssam /* XXX can keyixmap[keyix] != NULL? */ 1558148863Ssam if (keyix < nt->nt_keyixmax && 1559148863Ssam nt->nt_keyixmap[keyix] == NULL) { 1560178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1561178354Ssam IEEE80211_MSG_NODE, 1562148863Ssam "%s: add key map entry %p<%s> refcnt %d\n", 1563148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1564148863Ssam ieee80211_node_refcnt(ni)+1); 1565148863Ssam nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); 1566148863Ssam } 1567148863Ssam } 1568179220Ssam } else { 1569179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1570179220Ssam ni = NULL; /* spam bcast probe req to all vap's */ 1571179220Ssam else 1572179220Ssam ieee80211_ref_node(ni); 1573179220Ssam } 1574148863Ssam IEEE80211_NODE_UNLOCK(nt); 1575148863Ssam 1576148863Ssam return ni; 1577148863Ssam} 1578179220Ssam#undef IS_BCAST_PROBEREQ 1579179220Ssam#undef IS_PROBEREQ 1580138568Ssam 1581138568Ssam/* 1582127772Ssam * Return a reference to the appropriate node for sending 1583127772Ssam * a data frame. This handles node discovery in adhoc networks. 1584127772Ssam */ 1585127772Ssamstruct ieee80211_node * 1586138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1587178354Ssamieee80211_find_txnode_debug(struct ieee80211vap *vap, 1588178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], 1589138568Ssam const char *func, int line) 1590138568Ssam#else 1591178354Ssamieee80211_find_txnode(struct ieee80211vap *vap, 1592178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1593138568Ssam#endif 1594127772Ssam{ 1595178354Ssam struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; 1596127772Ssam struct ieee80211_node *ni; 1597127772Ssam 1598127772Ssam /* 1599127772Ssam * The destination address should be in the node table 1600148863Ssam * unless this is a multicast/broadcast frame. We can 1601148863Ssam * also optimize station mode operation, all frames go 1602148863Ssam * to the bss node. 1603127772Ssam */ 1604127772Ssam /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ 1605138568Ssam IEEE80211_NODE_LOCK(nt); 1606178354Ssam if (vap->iv_opmode == IEEE80211_M_STA || 1607178354Ssam vap->iv_opmode == IEEE80211_M_WDS || 1608178354Ssam IEEE80211_IS_MULTICAST(macaddr)) 1609178354Ssam ni = ieee80211_ref_node(vap->iv_bss); 1610186099Ssam else 1611178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1612138568Ssam IEEE80211_NODE_UNLOCK(nt); 1613138568Ssam 1614138568Ssam if (ni == NULL) { 1615178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS || 1616178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO) { 1617140497Ssam /* 1618140497Ssam * In adhoc mode cons up a node for the destination. 1619140497Ssam * Note that we need an additional reference for the 1620178354Ssam * caller to be consistent with 1621178354Ssam * ieee80211_find_node_locked. 1622140497Ssam */ 1623178354Ssam ni = ieee80211_fakeup_adhoc_node(vap, macaddr); 1624140497Ssam if (ni != NULL) 1625140497Ssam (void) ieee80211_ref_node(ni); 1626140497Ssam } else { 1627178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, 1628178354Ssam "no node, discard frame (%s)", __func__); 1629178354Ssam vap->iv_stats.is_tx_nonode++; 1630127772Ssam } 1631127772Ssam } 1632127772Ssam return ni; 1633127772Ssam} 1634127772Ssam 1635116742Ssamstatic void 1636138568Ssam_ieee80211_free_node(struct ieee80211_node *ni) 1637116742Ssam{ 1638138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1639119150Ssam 1640179641Ssam /* 1641179641Ssam * NB: careful about referencing the vap as it may be 1642179641Ssam * gone if the last reference was held by a driver. 1643179641Ssam * We know the com will always be present so it's safe 1644179641Ssam * to use ni_ic below to reclaim resources. 1645179641Ssam */ 1646179641Ssam#if 0 1647178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1648140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1649140766Ssam ether_sprintf(ni->ni_macaddr), 1650138568Ssam nt != NULL ? nt->nt_name : "<gone>"); 1651179641Ssam#endif 1652179641Ssam if (ni->ni_associd != 0) { 1653179641Ssam struct ieee80211vap *vap = ni->ni_vap; 1654179641Ssam if (vap->iv_aid_bitmap != NULL) 1655179641Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1656179641Ssam } 1657138568Ssam if (nt != NULL) { 1658138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1659138568Ssam LIST_REMOVE(ni, ni_hash); 1660138568Ssam } 1661179641Ssam ni->ni_ic->ic_node_free(ni); 1662116742Ssam} 1663116742Ssam 1664116742Ssamvoid 1665138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1666138568Ssamieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line) 1667138568Ssam#else 1668138568Ssamieee80211_free_node(struct ieee80211_node *ni) 1669138568Ssam#endif 1670116742Ssam{ 1671138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1672119150Ssam 1673138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1674178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1675140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, 1676138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1677138568Ssam#endif 1678148863Ssam if (nt != NULL) { 1679148863Ssam IEEE80211_NODE_LOCK(nt); 1680148863Ssam if (ieee80211_node_dectestref(ni)) { 1681148863Ssam /* 1682148863Ssam * Last reference, reclaim state. 1683148863Ssam */ 1684138568Ssam _ieee80211_free_node(ni); 1685148863Ssam } else if (ieee80211_node_refcnt(ni) == 1 && 1686148863Ssam nt->nt_keyixmap != NULL) { 1687148863Ssam ieee80211_keyix keyix; 1688148863Ssam /* 1689148863Ssam * Check for a last reference in the key mapping table. 1690148863Ssam */ 1691148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1692148863Ssam if (keyix < nt->nt_keyixmax && 1693148863Ssam nt->nt_keyixmap[keyix] == ni) { 1694178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1695178354Ssam IEEE80211_MSG_NODE, 1696148863Ssam "%s: %p<%s> clear key map entry", __func__, 1697148863Ssam ni, ether_sprintf(ni->ni_macaddr)); 1698148863Ssam nt->nt_keyixmap[keyix] = NULL; 1699148863Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1700148863Ssam _ieee80211_free_node(ni); 1701148863Ssam } 1702148863Ssam } 1703148863Ssam IEEE80211_NODE_UNLOCK(nt); 1704148863Ssam } else { 1705148863Ssam if (ieee80211_node_dectestref(ni)) 1706138568Ssam _ieee80211_free_node(ni); 1707116742Ssam } 1708116742Ssam} 1709116742Ssam 1710138568Ssam/* 1711148863Ssam * Reclaim a unicast key and clear any key cache state. 1712148863Ssam */ 1713148863Ssamint 1714148863Ssamieee80211_node_delucastkey(struct ieee80211_node *ni) 1715148863Ssam{ 1716179641Ssam struct ieee80211com *ic = ni->ni_ic; 1717179641Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1718148863Ssam struct ieee80211_node *nikey; 1719148863Ssam ieee80211_keyix keyix; 1720148863Ssam int isowned, status; 1721148863Ssam 1722148863Ssam /* 1723148863Ssam * NB: We must beware of LOR here; deleting the key 1724148863Ssam * can cause the crypto layer to block traffic updates 1725148863Ssam * which can generate a LOR against the node table lock; 1726148863Ssam * grab it here and stash the key index for our use below. 1727148863Ssam * 1728148863Ssam * Must also beware of recursion on the node table lock. 1729148863Ssam * When called from node_cleanup we may already have 1730148863Ssam * the node table lock held. Unfortunately there's no 1731148863Ssam * way to separate out this path so we must do this 1732148863Ssam * conditionally. 1733148863Ssam */ 1734148863Ssam isowned = IEEE80211_NODE_IS_LOCKED(nt); 1735148863Ssam if (!isowned) 1736148863Ssam IEEE80211_NODE_LOCK(nt); 1737179641Ssam nikey = NULL; 1738179641Ssam status = 1; /* NB: success */ 1739186144Ssam if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) { 1740179641Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1741179641Ssam status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); 1742179641Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { 1743179641Ssam nikey = nt->nt_keyixmap[keyix]; 1744201758Smbr nt->nt_keyixmap[keyix] = NULL; 1745179641Ssam } 1746179641Ssam } 1747148863Ssam if (!isowned) 1748178354Ssam IEEE80211_NODE_UNLOCK(nt); 1749148863Ssam 1750148863Ssam if (nikey != NULL) { 1751148863Ssam KASSERT(nikey == ni, 1752148863Ssam ("key map out of sync, ni %p nikey %p", ni, nikey)); 1753179641Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1754148863Ssam "%s: delete key map entry %p<%s> refcnt %d\n", 1755148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1756148863Ssam ieee80211_node_refcnt(ni)-1); 1757148863Ssam ieee80211_free_node(ni); 1758148863Ssam } 1759148863Ssam return status; 1760148863Ssam} 1761148863Ssam 1762148863Ssam/* 1763138568Ssam * Reclaim a node. If this is the last reference count then 1764138568Ssam * do the normal free work. Otherwise remove it from the node 1765138568Ssam * table and mark it gone by clearing the back-reference. 1766138568Ssam */ 1767138568Ssamstatic void 1768138568Ssamnode_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 1769116742Ssam{ 1770148863Ssam ieee80211_keyix keyix; 1771138568Ssam 1772148863Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1773148863Ssam 1774178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1775140766Ssam "%s: remove %p<%s> from %s table, refcnt %d\n", 1776140766Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1777140766Ssam nt->nt_name, ieee80211_node_refcnt(ni)-1); 1778148863Ssam /* 1779148863Ssam * Clear any entry in the unicast key mapping table. 1780148863Ssam * We need to do it here so rx lookups don't find it 1781148863Ssam * in the mapping table even if it's not in the hash 1782148863Ssam * table. We cannot depend on the mapping table entry 1783148863Ssam * being cleared because the node may not be free'd. 1784148863Ssam */ 1785148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1786148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && 1787148863Ssam nt->nt_keyixmap[keyix] == ni) { 1788178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1789188494Ssam "%s: %p<%s> clear key map entry %u\n", 1790188494Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), keyix); 1791148863Ssam nt->nt_keyixmap[keyix] = NULL; 1792148863Ssam ieee80211_node_decref(ni); /* NB: don't need free */ 1793148863Ssam } 1794138568Ssam if (!ieee80211_node_dectestref(ni)) { 1795138568Ssam /* 1796138568Ssam * Other references are present, just remove the 1797138568Ssam * node from the table so it cannot be found. When 1798138568Ssam * the references are dropped storage will be 1799140753Ssam * reclaimed. 1800138568Ssam */ 1801138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1802138568Ssam LIST_REMOVE(ni, ni_hash); 1803138568Ssam ni->ni_table = NULL; /* clear reference */ 1804138568Ssam } else 1805138568Ssam _ieee80211_free_node(ni); 1806138568Ssam} 1807138568Ssam 1808178354Ssam/* 1809178354Ssam * Node table support. 1810178354Ssam */ 1811178354Ssam 1812178354Ssamstatic void 1813178354Ssamieee80211_node_table_init(struct ieee80211com *ic, 1814178354Ssam struct ieee80211_node_table *nt, 1815178354Ssam const char *name, int inact, int keyixmax) 1816178354Ssam{ 1817178354Ssam struct ifnet *ifp = ic->ic_ifp; 1818178354Ssam 1819178354Ssam nt->nt_ic = ic; 1820178354Ssam IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname); 1821178354Ssam IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname); 1822178354Ssam TAILQ_INIT(&nt->nt_node); 1823178354Ssam nt->nt_name = name; 1824178354Ssam nt->nt_scangen = 1; 1825178354Ssam nt->nt_inact_init = inact; 1826178354Ssam nt->nt_keyixmax = keyixmax; 1827178354Ssam if (nt->nt_keyixmax > 0) { 1828186302Ssam nt->nt_keyixmap = (struct ieee80211_node **) malloc( 1829184210Sdes keyixmax * sizeof(struct ieee80211_node *), 1830178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 1831178354Ssam if (nt->nt_keyixmap == NULL) 1832178354Ssam if_printf(ic->ic_ifp, 1833178354Ssam "Cannot allocate key index map with %u entries\n", 1834178354Ssam keyixmax); 1835178354Ssam } else 1836178354Ssam nt->nt_keyixmap = NULL; 1837178354Ssam} 1838178354Ssam 1839178354Ssamstatic void 1840178354Ssamieee80211_node_table_reset(struct ieee80211_node_table *nt, 1841178354Ssam struct ieee80211vap *match) 1842178354Ssam{ 1843178354Ssam struct ieee80211_node *ni, *next; 1844178354Ssam 1845178354Ssam IEEE80211_NODE_LOCK(nt); 1846178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { 1847178354Ssam if (match != NULL && ni->ni_vap != match) 1848178354Ssam continue; 1849178354Ssam /* XXX can this happen? if so need's work */ 1850138568Ssam if (ni->ni_associd != 0) { 1851178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1852178354Ssam 1853178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 1854178354Ssam vap->iv_auth->ia_node_leave(ni); 1855178354Ssam if (vap->iv_aid_bitmap != NULL) 1856178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1857138568Ssam } 1858178354Ssam ni->ni_wdsvap = NULL; /* clear reference */ 1859138568Ssam node_reclaim(nt, ni); 1860138568Ssam } 1861178354Ssam if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { 1862178354Ssam /* 1863178354Ssam * Make a separate pass to clear references to this vap 1864178354Ssam * held by DWDS entries. They will not be matched above 1865178354Ssam * because ni_vap will point to the ap vap but we still 1866178354Ssam * need to clear ni_wdsvap when the WDS vap is destroyed 1867178354Ssam * and/or reset. 1868178354Ssam */ 1869178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) 1870178354Ssam if (ni->ni_wdsvap == match) 1871178354Ssam ni->ni_wdsvap = NULL; 1872178354Ssam } 1873178354Ssam IEEE80211_NODE_UNLOCK(nt); 1874116742Ssam} 1875116742Ssam 1876178354Ssamstatic void 1877178354Ssamieee80211_node_table_cleanup(struct ieee80211_node_table *nt) 1878178354Ssam{ 1879178354Ssam ieee80211_node_table_reset(nt, NULL); 1880178354Ssam if (nt->nt_keyixmap != NULL) { 1881178354Ssam#ifdef DIAGNOSTIC 1882178354Ssam /* XXX verify all entries are NULL */ 1883178354Ssam int i; 1884178354Ssam for (i = 0; i < nt->nt_keyixmax; i++) 1885178354Ssam if (nt->nt_keyixmap[i] != NULL) 1886178354Ssam printf("%s: %s[%u] still active\n", __func__, 1887178354Ssam nt->nt_name, i); 1888178354Ssam#endif 1889186302Ssam free(nt->nt_keyixmap, M_80211_NODE); 1890178354Ssam nt->nt_keyixmap = NULL; 1891178354Ssam } 1892178354Ssam IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt); 1893178354Ssam IEEE80211_NODE_LOCK_DESTROY(nt); 1894178354Ssam} 1895178354Ssam 1896120483Ssam/* 1897138568Ssam * Timeout inactive stations and do related housekeeping. 1898138568Ssam * Note that we cannot hold the node lock while sending a 1899138568Ssam * frame as this would lead to a LOR. Instead we use a 1900138568Ssam * generation number to mark nodes that we've scanned and 1901138568Ssam * drop the lock and restart a scan if we have to time out 1902138568Ssam * a node. Since we are single-threaded by virtue of 1903120483Ssam * controlling the inactivity timer we can be sure this will 1904120483Ssam * process each node only once. 1905120483Ssam */ 1906138568Ssamstatic void 1907178354Ssamieee80211_timeout_stations(struct ieee80211com *ic) 1908116742Ssam{ 1909178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1910178354Ssam struct ieee80211vap *vap; 1911120483Ssam struct ieee80211_node *ni; 1912178354Ssam int gen = 0; 1913116742Ssam 1914178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 1915154532Ssam gen = ++nt->nt_scangen; 1916120483Ssamrestart: 1917138568Ssam IEEE80211_NODE_LOCK(nt); 1918138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 1919120483Ssam if (ni->ni_scangen == gen) /* previously handled */ 1920120483Ssam continue; 1921120483Ssam ni->ni_scangen = gen; 1922138568Ssam /* 1923147788Ssam * Ignore entries for which have yet to receive an 1924147788Ssam * authentication frame. These are transient and 1925147788Ssam * will be reclaimed when the last reference to them 1926147788Ssam * goes away (when frame xmits complete). 1927147788Ssam */ 1928178354Ssam vap = ni->ni_vap; 1929178354Ssam /* 1930178354Ssam * Only process stations when in RUN state. This 1931178354Ssam * insures, for example, that we don't timeout an 1932178354Ssam * inactive station during CAC. Note that CSA state 1933178354Ssam * is actually handled in ieee80211_node_timeout as 1934178354Ssam * it applies to more than timeout processing. 1935178354Ssam */ 1936178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 1937178354Ssam continue; 1938178354Ssam /* XXX can vap be NULL? */ 1939178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 1940178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 1941148323Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 1942147788Ssam continue; 1943147788Ssam /* 1944138568Ssam * Free fragment if not needed anymore 1945138568Ssam * (last fragment older than 1s). 1946178354Ssam * XXX doesn't belong here, move to node_age 1947138568Ssam */ 1948138568Ssam if (ni->ni_rxfrag[0] != NULL && 1949138568Ssam ticks > ni->ni_rxfragstamp + hz) { 1950138568Ssam m_freem(ni->ni_rxfrag[0]); 1951138568Ssam ni->ni_rxfrag[0] = NULL; 1952138568Ssam } 1953184277Ssam if (ni->ni_inact > 0) { 1954172062Ssam ni->ni_inact--; 1955184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1956184277Ssam "%s: inact %u inact_reload %u nrates %u", 1957184277Ssam __func__, ni->ni_inact, ni->ni_inact_reload, 1958184277Ssam ni->ni_rates.rs_nrates); 1959184277Ssam } 1960140498Ssam /* 1961140498Ssam * Special case ourself; we may be idle for extended periods 1962140498Ssam * of time and regardless reclaiming our state is wrong. 1963178354Ssam * XXX run ic_node_age 1964140498Ssam */ 1965178354Ssam if (ni == vap->iv_bss) 1966140498Ssam continue; 1967178354Ssam if (ni->ni_associd != 0 || 1968178354Ssam (vap->iv_opmode == IEEE80211_M_IBSS || 1969178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO)) { 1970119150Ssam /* 1971178354Ssam * Age/drain resources held by the station. 1972138568Ssam */ 1973178354Ssam ic->ic_node_age(ni); 1974138568Ssam /* 1975138568Ssam * Probe the station before time it out. We 1976138568Ssam * send a null data frame which may not be 1977138568Ssam * universally supported by drivers (need it 1978138568Ssam * for ps-poll support so it should be...). 1979170530Ssam * 1980170530Ssam * XXX don't probe the station unless we've 1981170530Ssam * received a frame from them (and have 1982170530Ssam * some idea of the rates they are capable 1983170530Ssam * of); this will get fixed more properly 1984170530Ssam * soon with better handling of the rate set. 1985138568Ssam */ 1986178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 1987172062Ssam (0 < ni->ni_inact && 1988178354Ssam ni->ni_inact <= vap->iv_inact_probe) && 1989170530Ssam ni->ni_rates.rs_nrates != 0) { 1990178354Ssam IEEE80211_NOTE(vap, 1991148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, 1992148320Ssam ni, "%s", 1993148320Ssam "probe station due to inactivity"); 1994148582Ssam /* 1995148582Ssam * Grab a reference before unlocking the table 1996148582Ssam * so the node cannot be reclaimed before we 1997148582Ssam * send the frame. ieee80211_send_nulldata 1998148582Ssam * understands we've done this and reclaims the 1999148582Ssam * ref for us as needed. 2000148582Ssam */ 2001148582Ssam ieee80211_ref_node(ni); 2002138568Ssam IEEE80211_NODE_UNLOCK(nt); 2003148301Ssam ieee80211_send_nulldata(ni); 2004138568Ssam /* XXX stat? */ 2005138568Ssam goto restart; 2006138568Ssam } 2007138568Ssam } 2008178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 2009172062Ssam ni->ni_inact <= 0) { 2010178354Ssam IEEE80211_NOTE(vap, 2011148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, 2012148320Ssam "station timed out due to inactivity " 2013148320Ssam "(refcnt %u)", ieee80211_node_refcnt(ni)); 2014138568Ssam /* 2015138568Ssam * Send a deauthenticate frame and drop the station. 2016138568Ssam * This is somewhat complicated due to reference counts 2017138568Ssam * and locking. At this point a station will typically 2018138568Ssam * have a reference count of 1. ieee80211_node_leave 2019138568Ssam * will do a "free" of the node which will drop the 2020138568Ssam * reference count. But in the meantime a reference 2021138568Ssam * wil be held by the deauth frame. The actual reclaim 2022138568Ssam * of the node will happen either after the tx is 2023138568Ssam * completed or by ieee80211_node_leave. 2024120483Ssam * 2025138568Ssam * Separately we must drop the node lock before sending 2026170530Ssam * in case the driver takes a lock, as this can result 2027170530Ssam * in a LOR between the node lock and the driver lock. 2028119150Ssam */ 2029172229Ssam ieee80211_ref_node(ni); 2030138568Ssam IEEE80211_NODE_UNLOCK(nt); 2031138568Ssam if (ni->ni_associd != 0) { 2032178354Ssam IEEE80211_SEND_MGMT(ni, 2033138568Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 2034138568Ssam IEEE80211_REASON_AUTH_EXPIRE); 2035138568Ssam } 2036178354Ssam ieee80211_node_leave(ni); 2037172229Ssam ieee80211_free_node(ni); 2038178354Ssam vap->iv_stats.is_node_timeout++; 2039120483Ssam goto restart; 2040120483Ssam } 2041116742Ssam } 2042138568Ssam IEEE80211_NODE_UNLOCK(nt); 2043138568Ssam 2044178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2045170530Ssam} 2046138568Ssam 2047178354Ssam/* 2048178354Ssam * Aggressively reclaim resources. This should be used 2049178354Ssam * only in a critical situation to reclaim mbuf resources. 2050178354Ssam */ 2051170530Ssamvoid 2052178354Ssamieee80211_drain(struct ieee80211com *ic) 2053178354Ssam{ 2054178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 2055178354Ssam struct ieee80211vap *vap; 2056178354Ssam struct ieee80211_node *ni; 2057178354Ssam 2058178354Ssam IEEE80211_NODE_LOCK(nt); 2059178354Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2060178354Ssam /* 2061178354Ssam * Ignore entries for which have yet to receive an 2062178354Ssam * authentication frame. These are transient and 2063178354Ssam * will be reclaimed when the last reference to them 2064178354Ssam * goes away (when frame xmits complete). 2065178354Ssam */ 2066178354Ssam vap = ni->ni_vap; 2067178354Ssam /* 2068178354Ssam * Only process stations when in RUN state. This 2069178354Ssam * insures, for example, that we don't timeout an 2070178354Ssam * inactive station during CAC. Note that CSA state 2071178354Ssam * is actually handled in ieee80211_node_timeout as 2072178354Ssam * it applies to more than timeout processing. 2073178354Ssam */ 2074178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 2075178354Ssam continue; 2076178354Ssam /* XXX can vap be NULL? */ 2077178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 2078178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 2079178354Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 2080178354Ssam continue; 2081178354Ssam /* 2082178354Ssam * Free fragments. 2083178354Ssam * XXX doesn't belong here, move to node_drain 2084178354Ssam */ 2085178354Ssam if (ni->ni_rxfrag[0] != NULL) { 2086178354Ssam m_freem(ni->ni_rxfrag[0]); 2087178354Ssam ni->ni_rxfrag[0] = NULL; 2088178354Ssam } 2089178354Ssam /* 2090178354Ssam * Drain resources held by the station. 2091178354Ssam */ 2092178354Ssam ic->ic_node_drain(ni); 2093178354Ssam } 2094178354Ssam IEEE80211_NODE_UNLOCK(nt); 2095178354Ssam} 2096178354Ssam 2097178354Ssam/* 2098178354Ssam * Per-ieee80211com inactivity timer callback. 2099178354Ssam */ 2100178354Ssamvoid 2101170530Ssamieee80211_node_timeout(void *arg) 2102170530Ssam{ 2103170530Ssam struct ieee80211com *ic = arg; 2104170530Ssam 2105178354Ssam /* 2106178354Ssam * Defer timeout processing if a channel switch is pending. 2107178354Ssam * We typically need to be mute so not doing things that 2108178354Ssam * might generate frames is good to handle in one place. 2109178354Ssam * Supressing the station timeout processing may extend the 2110178354Ssam * lifetime of inactive stations (by not decrementing their 2111178354Ssam * idle counters) but this should be ok unless the CSA is 2112178354Ssam * active for an unusually long time. 2113178354Ssam */ 2114178354Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 2115178354Ssam ieee80211_scan_timeout(ic); 2116178354Ssam ieee80211_timeout_stations(ic); 2117195379Ssam ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT); 2118170530Ssam 2119178354Ssam IEEE80211_LOCK(ic); 2120178354Ssam ieee80211_erp_timeout(ic); 2121178354Ssam ieee80211_ht_timeout(ic); 2122178354Ssam IEEE80211_UNLOCK(ic); 2123178354Ssam } 2124170530Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 2125170530Ssam ieee80211_node_timeout, ic); 2126116742Ssam} 2127116742Ssam 2128116742Ssamvoid 2129178354Ssamieee80211_iterate_nodes(struct ieee80211_node_table *nt, 2130178354Ssam ieee80211_iter_func *f, void *arg) 2131116742Ssam{ 2132116742Ssam struct ieee80211_node *ni; 2133138568Ssam u_int gen; 2134116742Ssam 2135178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 2136154532Ssam gen = ++nt->nt_scangen; 2137138568Ssamrestart: 2138138568Ssam IEEE80211_NODE_LOCK(nt); 2139138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2140138568Ssam if (ni->ni_scangen != gen) { 2141138568Ssam ni->ni_scangen = gen; 2142138568Ssam (void) ieee80211_ref_node(ni); 2143138568Ssam IEEE80211_NODE_UNLOCK(nt); 2144138568Ssam (*f)(arg, ni); 2145138568Ssam ieee80211_free_node(ni); 2146138568Ssam goto restart; 2147138568Ssam } 2148138568Ssam } 2149138568Ssam IEEE80211_NODE_UNLOCK(nt); 2150138568Ssam 2151178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2152116742Ssam} 2153138568Ssam 2154138568Ssamvoid 2155138568Ssamieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 2156138568Ssam{ 2157138568Ssam printf("0x%p: mac %s refcnt %d\n", ni, 2158138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); 2159138568Ssam printf("\tscangen %u authmode %u flags 0x%x\n", 2160138568Ssam ni->ni_scangen, ni->ni_authmode, ni->ni_flags); 2161138568Ssam printf("\tassocid 0x%x txpower %u vlan %u\n", 2162138568Ssam ni->ni_associd, ni->ni_txpower, ni->ni_vlan); 2163138568Ssam printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", 2164167439Ssam ni->ni_txseqs[IEEE80211_NONQOS_TID], 2165167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, 2166167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, 2167138568Ssam ni->ni_rxfragstamp); 2168192468Ssam printf("\trssi %d noise %d intval %u capinfo 0x%x\n", 2169192468Ssam node_getrssi(ni), ni->ni_noise, 2170170530Ssam ni->ni_intval, ni->ni_capinfo); 2171138568Ssam printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", 2172138568Ssam ether_sprintf(ni->ni_bssid), 2173138568Ssam ni->ni_esslen, ni->ni_essid, 2174138568Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags); 2175184277Ssam printf("\tinact %u inact_reload %u txrate %u\n", 2176184277Ssam ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate); 2177170530Ssam printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", 2178170530Ssam ni->ni_htcap, ni->ni_htparam, 2179170530Ssam ni->ni_htctlchan, ni->ni_ht2ndchan); 2180170530Ssam printf("\thtopmode %x htstbc %x chw %u\n", 2181170530Ssam ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw); 2182138568Ssam} 2183138568Ssam 2184138568Ssamvoid 2185138568Ssamieee80211_dump_nodes(struct ieee80211_node_table *nt) 2186138568Ssam{ 2187138568Ssam ieee80211_iterate_nodes(nt, 2188138568Ssam (ieee80211_iter_func *) ieee80211_dump_node, nt); 2189138568Ssam} 2190138568Ssam 2191179642Ssamstatic void 2192179642Ssamieee80211_notify_erp_locked(struct ieee80211com *ic) 2193172211Ssam{ 2194178354Ssam struct ieee80211vap *vap; 2195178354Ssam 2196178354Ssam IEEE80211_LOCK_ASSERT(ic); 2197178354Ssam 2198178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 2199178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) 2200178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); 2201172211Ssam} 2202172211Ssam 2203179642Ssamvoid 2204179642Ssamieee80211_notify_erp(struct ieee80211com *ic) 2205179642Ssam{ 2206179642Ssam IEEE80211_LOCK(ic); 2207179642Ssam ieee80211_notify_erp_locked(ic); 2208179642Ssam IEEE80211_UNLOCK(ic); 2209179642Ssam} 2210179642Ssam 2211138568Ssam/* 2212138568Ssam * Handle a station joining an 11g network. 2213138568Ssam */ 2214138568Ssamstatic void 2215178354Ssamieee80211_node_join_11g(struct ieee80211_node *ni) 2216138568Ssam{ 2217178354Ssam struct ieee80211com *ic = ni->ni_ic; 2218138568Ssam 2219173273Ssam IEEE80211_LOCK_ASSERT(ic); 2220173273Ssam 2221138568Ssam /* 2222138568Ssam * Station isn't capable of short slot time. Bump 2223138568Ssam * the count of long slot time stations and disable 2224138568Ssam * use of short slot time. Note that the actual switch 2225138568Ssam * over to long slot time use may not occur until the 2226138568Ssam * next beacon transmission (per sec. 7.3.1.4 of 11g). 2227138568Ssam */ 2228138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2229138568Ssam ic->ic_longslotsta++; 2230178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2231172211Ssam "station needs long slot time, count %d", 2232172211Ssam ic->ic_longslotsta); 2233138568Ssam /* XXX vap's w/ conflicting needs won't work */ 2234170530Ssam if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { 2235170530Ssam /* 2236170530Ssam * Don't force slot time when switched to turbo 2237170530Ssam * mode as non-ERP stations won't be present; this 2238170530Ssam * need only be done when on the normal G channel. 2239170530Ssam */ 2240170530Ssam ieee80211_set_shortslottime(ic, 0); 2241170530Ssam } 2242138568Ssam } 2243138568Ssam /* 2244138568Ssam * If the new station is not an ERP station 2245138568Ssam * then bump the counter and enable protection 2246138568Ssam * if configured. 2247138568Ssam */ 2248178354Ssam if (!ieee80211_iserp_rateset(&ni->ni_rates)) { 2249138568Ssam ic->ic_nonerpsta++; 2250178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2251172211Ssam "station is !ERP, %d non-ERP stations associated", 2252172211Ssam ic->ic_nonerpsta); 2253138568Ssam /* 2254138568Ssam * If station does not support short preamble 2255138568Ssam * then we must enable use of Barker preamble. 2256138568Ssam */ 2257138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { 2258178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2259172211Ssam "%s", "station needs long preamble"); 2260138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 2261138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 2262138568Ssam } 2263172211Ssam /* 2264178354Ssam * If protection is configured and this is the first 2265178354Ssam * indication we should use protection, enable it. 2266172211Ssam */ 2267172211Ssam if (ic->ic_protmode != IEEE80211_PROT_NONE && 2268172211Ssam ic->ic_nonerpsta == 1 && 2269172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2270178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2271172211Ssam "%s: enable use of protection\n", __func__); 2272172211Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 2273179642Ssam ieee80211_notify_erp_locked(ic); 2274172211Ssam } 2275138568Ssam } else 2276138568Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 2277138568Ssam} 2278138568Ssam 2279138568Ssamvoid 2280178354Ssamieee80211_node_join(struct ieee80211_node *ni, int resp) 2281138568Ssam{ 2282178354Ssam struct ieee80211com *ic = ni->ni_ic; 2283178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2284138568Ssam int newassoc; 2285138568Ssam 2286138568Ssam if (ni->ni_associd == 0) { 2287170530Ssam uint16_t aid; 2288138568Ssam 2289178354Ssam KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); 2290138568Ssam /* 2291138568Ssam * It would be good to search the bitmap 2292138568Ssam * more efficiently, but this will do for now. 2293138568Ssam */ 2294178354Ssam for (aid = 1; aid < vap->iv_max_aid; aid++) { 2295178354Ssam if (!IEEE80211_AID_ISSET(vap, aid)) 2296138568Ssam break; 2297138568Ssam } 2298178354Ssam if (aid >= vap->iv_max_aid) { 2299179640Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); 2300178354Ssam ieee80211_node_leave(ni); 2301138568Ssam return; 2302138568Ssam } 2303138568Ssam ni->ni_associd = aid | 0xc000; 2304173273Ssam ni->ni_jointime = time_uptime; 2305178354Ssam IEEE80211_LOCK(ic); 2306178354Ssam IEEE80211_AID_SET(vap, ni->ni_associd); 2307178354Ssam vap->iv_sta_assoc++; 2308138568Ssam ic->ic_sta_assoc++; 2309173273Ssam 2310173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2311173273Ssam ieee80211_ht_node_join(ni); 2312170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2313170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2314178354Ssam ieee80211_node_join_11g(ni); 2315173273Ssam IEEE80211_UNLOCK(ic); 2316173273Ssam 2317173273Ssam newassoc = 1; 2318138568Ssam } else 2319138568Ssam newassoc = 0; 2320138568Ssam 2321178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2322183256Ssam "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 2323139523Ssam IEEE80211_NODE_AID(ni), 2324139523Ssam ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", 2325139523Ssam ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", 2326139523Ssam ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "", 2327170530Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 2328170530Ssam ni->ni_flags & IEEE80211_NODE_HT ? 2329182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 2330173273Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 2331183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 2332183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 2333183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 2334178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 2335170530Ssam ", fast-frames" : "", 2336178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 2337170530Ssam ", turbo" : "" 2338139523Ssam ); 2339138568Ssam 2340193966Ssam ieee80211_node_setuptxparms(ni); 2341138568Ssam /* give driver a chance to setup state like ni_txrate */ 2342139524Ssam if (ic->ic_newassoc != NULL) 2343148307Ssam ic->ic_newassoc(ni, newassoc); 2344178354Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); 2345138568Ssam /* tell the authenticator about new station */ 2346178354Ssam if (vap->iv_auth->ia_node_join != NULL) 2347178354Ssam vap->iv_auth->ia_node_join(ni); 2348178354Ssam ieee80211_notify_node_join(ni, 2349173866Ssam resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 2350138568Ssam} 2351138568Ssam 2352172211Ssamstatic void 2353172211Ssamdisable_protection(struct ieee80211com *ic) 2354172211Ssam{ 2355172211Ssam KASSERT(ic->ic_nonerpsta == 0 && 2356172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, 2357172211Ssam ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta, 2358172211Ssam ic->ic_flags_ext)); 2359172211Ssam 2360172211Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 2361172211Ssam /* XXX verify mode? */ 2362172211Ssam if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { 2363172211Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 2364172211Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 2365172211Ssam } 2366179642Ssam ieee80211_notify_erp_locked(ic); 2367172211Ssam} 2368172211Ssam 2369138568Ssam/* 2370138568Ssam * Handle a station leaving an 11g network. 2371138568Ssam */ 2372138568Ssamstatic void 2373178354Ssamieee80211_node_leave_11g(struct ieee80211_node *ni) 2374138568Ssam{ 2375178354Ssam struct ieee80211com *ic = ni->ni_ic; 2376138568Ssam 2377173273Ssam IEEE80211_LOCK_ASSERT(ic); 2378173273Ssam 2379170530Ssam KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), 2380178354Ssam ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, 2381178354Ssam ic->ic_bsschan->ic_flags)); 2382138568Ssam 2383138568Ssam /* 2384138568Ssam * If a long slot station do the slot time bookkeeping. 2385138568Ssam */ 2386138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2387138568Ssam KASSERT(ic->ic_longslotsta > 0, 2388138568Ssam ("bogus long slot station count %d", ic->ic_longslotsta)); 2389138568Ssam ic->ic_longslotsta--; 2390178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2391172211Ssam "long slot time station leaves, count now %d", 2392172211Ssam ic->ic_longslotsta); 2393138568Ssam if (ic->ic_longslotsta == 0) { 2394138568Ssam /* 2395138568Ssam * Re-enable use of short slot time if supported 2396138568Ssam * and not operating in IBSS mode (per spec). 2397138568Ssam */ 2398138568Ssam if ((ic->ic_caps & IEEE80211_C_SHSLOT) && 2399138568Ssam ic->ic_opmode != IEEE80211_M_IBSS) { 2400178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 2401178354Ssam IEEE80211_MSG_ASSOC, 2402138568Ssam "%s: re-enable use of short slot time\n", 2403138568Ssam __func__); 2404138568Ssam ieee80211_set_shortslottime(ic, 1); 2405138568Ssam } 2406138568Ssam } 2407138568Ssam } 2408138568Ssam /* 2409138568Ssam * If a non-ERP station do the protection-related bookkeeping. 2410138568Ssam */ 2411138568Ssam if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { 2412138568Ssam KASSERT(ic->ic_nonerpsta > 0, 2413138568Ssam ("bogus non-ERP station count %d", ic->ic_nonerpsta)); 2414138568Ssam ic->ic_nonerpsta--; 2415178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2416172211Ssam "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta, 2417172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ? 2418172211Ssam " (non-ERP sta present)" : ""); 2419172211Ssam if (ic->ic_nonerpsta == 0 && 2420172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2421178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2422138568Ssam "%s: disable use of protection\n", __func__); 2423172211Ssam disable_protection(ic); 2424138568Ssam } 2425138568Ssam } 2426138568Ssam} 2427138568Ssam 2428138568Ssam/* 2429172211Ssam * Time out presence of an overlapping bss with non-ERP 2430172211Ssam * stations. When operating in hostap mode we listen for 2431172211Ssam * beacons from other stations and if we identify a non-ERP 2432172211Ssam * station is present we enable protection. To identify 2433172211Ssam * when all non-ERP stations are gone we time out this 2434172211Ssam * condition. 2435172211Ssam */ 2436172211Ssamstatic void 2437172211Ssamieee80211_erp_timeout(struct ieee80211com *ic) 2438172211Ssam{ 2439172211Ssam 2440172211Ssam IEEE80211_LOCK_ASSERT(ic); 2441172211Ssam 2442172211Ssam if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) && 2443172211Ssam time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { 2444178354Ssam#if 0 2445178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 2446178354Ssam "%s", "age out non-ERP sta present on channel"); 2447178354Ssam#endif 2448172211Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; 2449172211Ssam if (ic->ic_nonerpsta == 0) 2450172211Ssam disable_protection(ic); 2451172211Ssam } 2452172211Ssam} 2453172211Ssam 2454172211Ssam/* 2455138568Ssam * Handle bookkeeping for station deauthentication/disassociation 2456138568Ssam * when operating as an ap. 2457138568Ssam */ 2458138568Ssamvoid 2459178354Ssamieee80211_node_leave(struct ieee80211_node *ni) 2460138568Ssam{ 2461178354Ssam struct ieee80211com *ic = ni->ni_ic; 2462178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2463140499Ssam struct ieee80211_node_table *nt = ni->ni_table; 2464138568Ssam 2465178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2466172211Ssam "station with aid %d leaves", IEEE80211_NODE_AID(ni)); 2467138568Ssam 2468178354Ssam KASSERT(vap->iv_opmode != IEEE80211_M_STA, 2469178354Ssam ("unexpected operating mode %u", vap->iv_opmode)); 2470138568Ssam /* 2471138568Ssam * If node wasn't previously associated all 2472138568Ssam * we need to do is reclaim the reference. 2473138568Ssam */ 2474138568Ssam /* XXX ibss mode bypasses 11g and notification */ 2475138568Ssam if (ni->ni_associd == 0) 2476138568Ssam goto done; 2477138568Ssam /* 2478138568Ssam * Tell the authenticator the station is leaving. 2479138568Ssam * Note that we must do this before yanking the 2480138568Ssam * association id as the authenticator uses the 2481138568Ssam * associd to locate it's state block. 2482138568Ssam */ 2483178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 2484178354Ssam vap->iv_auth->ia_node_leave(ni); 2485173273Ssam 2486173273Ssam IEEE80211_LOCK(ic); 2487178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 2488138568Ssam ni->ni_associd = 0; 2489178354Ssam vap->iv_sta_assoc--; 2490138568Ssam ic->ic_sta_assoc--; 2491138568Ssam 2492173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2493173273Ssam ieee80211_ht_node_leave(ni); 2494170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2495170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2496178354Ssam ieee80211_node_leave_11g(ni); 2497173273Ssam IEEE80211_UNLOCK(ic); 2498138568Ssam /* 2499138568Ssam * Cleanup station state. In particular clear various 2500138568Ssam * state that might otherwise be reused if the node 2501138568Ssam * is reused before the reference count goes to zero 2502138568Ssam * (and memory is reclaimed). 2503138568Ssam */ 2504178354Ssam ieee80211_sta_leave(ni); 2505138568Ssamdone: 2506140499Ssam /* 2507140499Ssam * Remove the node from any table it's recorded in and 2508140499Ssam * drop the caller's reference. Removal from the table 2509140499Ssam * is important to insure the node is not reprocessed 2510140499Ssam * for inactivity. 2511140499Ssam */ 2512140499Ssam if (nt != NULL) { 2513140499Ssam IEEE80211_NODE_LOCK(nt); 2514140499Ssam node_reclaim(nt, ni); 2515140499Ssam IEEE80211_NODE_UNLOCK(nt); 2516140499Ssam } else 2517140499Ssam ieee80211_free_node(ni); 2518138568Ssam} 2519138568Ssam 2520178354Ssamstruct rssiinfo { 2521178354Ssam struct ieee80211vap *vap; 2522178354Ssam int rssi_samples; 2523178354Ssam uint32_t rssi_total; 2524178354Ssam}; 2525178354Ssam 2526178354Ssamstatic void 2527178354Ssamget_hostap_rssi(void *arg, struct ieee80211_node *ni) 2528178354Ssam{ 2529178354Ssam struct rssiinfo *info = arg; 2530178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2531178354Ssam int8_t rssi; 2532178354Ssam 2533178354Ssam if (info->vap != vap) 2534178354Ssam return; 2535178354Ssam /* only associated stations */ 2536178354Ssam if (ni->ni_associd == 0) 2537178354Ssam return; 2538178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2539178354Ssam if (rssi != 0) { 2540178354Ssam info->rssi_samples++; 2541178354Ssam info->rssi_total += rssi; 2542178354Ssam } 2543178354Ssam} 2544178354Ssam 2545178354Ssamstatic void 2546178354Ssamget_adhoc_rssi(void *arg, struct ieee80211_node *ni) 2547178354Ssam{ 2548178354Ssam struct rssiinfo *info = arg; 2549178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2550178354Ssam int8_t rssi; 2551178354Ssam 2552178354Ssam if (info->vap != vap) 2553178354Ssam return; 2554178354Ssam /* only neighbors */ 2555178354Ssam /* XXX check bssid */ 2556178354Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 2557178354Ssam return; 2558178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2559178354Ssam if (rssi != 0) { 2560178354Ssam info->rssi_samples++; 2561178354Ssam info->rssi_total += rssi; 2562178354Ssam } 2563178354Ssam} 2564178354Ssam 2565195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 2566195618Srpaulostatic void 2567195618Srpauloget_mesh_rssi(void *arg, struct ieee80211_node *ni) 2568195618Srpaulo{ 2569195618Srpaulo struct rssiinfo *info = arg; 2570195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2571195618Srpaulo int8_t rssi; 2572195618Srpaulo 2573195618Srpaulo if (info->vap != vap) 2574195618Srpaulo return; 2575195618Srpaulo /* only neighbors that peered successfully */ 2576195618Srpaulo if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) 2577195618Srpaulo return; 2578195618Srpaulo rssi = vap->iv_ic->ic_node_getrssi(ni); 2579195618Srpaulo if (rssi != 0) { 2580195618Srpaulo info->rssi_samples++; 2581195618Srpaulo info->rssi_total += rssi; 2582195618Srpaulo } 2583195618Srpaulo} 2584195618Srpaulo#endif /* IEEE80211_SUPPORT_MESH */ 2585195618Srpaulo 2586170530Ssamint8_t 2587178354Ssamieee80211_getrssi(struct ieee80211vap *vap) 2588138568Ssam{ 2589138568Ssam#define NZ(x) ((x) == 0 ? 1 : (x)) 2590178354Ssam struct ieee80211com *ic = vap->iv_ic; 2591178354Ssam struct rssiinfo info; 2592138568Ssam 2593178354Ssam info.rssi_total = 0; 2594178354Ssam info.rssi_samples = 0; 2595178354Ssam info.vap = vap; 2596178354Ssam switch (vap->iv_opmode) { 2597138568Ssam case IEEE80211_M_IBSS: /* average of all ibss neighbors */ 2598138568Ssam case IEEE80211_M_AHDEMO: /* average of all neighbors */ 2599178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info); 2600178354Ssam break; 2601138568Ssam case IEEE80211_M_HOSTAP: /* average of all associated stations */ 2602178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info); 2603138568Ssam break; 2604195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 2605195618Srpaulo case IEEE80211_M_MBSS: /* average of all mesh neighbors */ 2606195618Srpaulo ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info); 2607195618Srpaulo break; 2608195618Srpaulo#endif 2609138568Ssam case IEEE80211_M_MONITOR: /* XXX */ 2610138568Ssam case IEEE80211_M_STA: /* use stats from associated ap */ 2611138568Ssam default: 2612178354Ssam if (vap->iv_bss != NULL) 2613178354Ssam info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); 2614178354Ssam info.rssi_samples = 1; 2615138568Ssam break; 2616138568Ssam } 2617178354Ssam return info.rssi_total / NZ(info.rssi_samples); 2618138568Ssam#undef NZ 2619138568Ssam} 2620138568Ssam 2621170530Ssamvoid 2622178354Ssamieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) 2623138568Ssam{ 2624138568Ssam 2625178354Ssam if (vap->iv_bss == NULL) /* NB: shouldn't happen */ 2626170530Ssam return; 2627178354Ssam vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); 2628170530Ssam /* for non-station mode return avg'd rssi accounting */ 2629178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 2630178354Ssam *rssi = ieee80211_getrssi(vap); 2631138568Ssam} 2632