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("$FreeBSD$"); 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 /* 288219602Sbschmidt * We must install the legacy rate est in ni_rates and the 289170530Ssam * HT rate set in ni_htrates. 290170530Ssam */ 291170530Ssam ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); 292183251Ssam /* 293183251Ssam * Setup bss tx parameters based on operating mode. We 294183251Ssam * use legacy rates when operating in a mixed HT+non-HT bss 295183251Ssam * and non-ERP rates in 11g for mixed ERP+non-ERP bss. 296183251Ssam */ 297183251Ssam if (mode == IEEE80211_MODE_11NA && 298193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) 299183251Ssam mode = IEEE80211_MODE_11A; 300183251Ssam else if (mode == IEEE80211_MODE_11NG && 301193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) 302183251Ssam mode = IEEE80211_MODE_11G; 303183251Ssam if (mode == IEEE80211_MODE_11G && 304183251Ssam (vap->iv_flags & IEEE80211_F_PUREG) == 0) 305183251Ssam mode = IEEE80211_MODE_11B; 306170530Ssam } 307183251Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 308165569Ssam ni->ni_rates = *ieee80211_get_suprates(ic, chan); 309138568Ssam} 310138568Ssam 311141658Ssamstatic __inline void 312141658Ssamcopy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) 313141658Ssam{ 314141658Ssam /* propagate useful state */ 315141658Ssam nbss->ni_authmode = obss->ni_authmode; 316141658Ssam nbss->ni_txpower = obss->ni_txpower; 317141658Ssam nbss->ni_vlan = obss->ni_vlan; 318141658Ssam /* XXX statistics? */ 319178354Ssam /* XXX legacy WDS bssid? */ 320141658Ssam} 321141658Ssam 322116742Ssamvoid 323178354Ssamieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) 324116742Ssam{ 325178354Ssam struct ieee80211com *ic = vap->iv_ic; 326116742Ssam struct ieee80211_node *ni; 327116742Ssam 328178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 329195618Srpaulo "%s: creating %s on channel %u\n", __func__, 330195618Srpaulo ieee80211_opmode_name[vap->iv_opmode], 331178354Ssam ieee80211_chan2ieee(ic, chan)); 332138568Ssam 333178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 334140753Ssam if (ni == NULL) { 335140753Ssam /* XXX recovery? */ 336138568Ssam return; 337138568Ssam } 338178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 339178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 340178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 341178354Ssam if (vap->iv_bss != NULL) 342178354Ssam copy_bss(ni, vap->iv_bss); 343148843Ssam ni->ni_intval = ic->ic_bintval; 344178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) 345116742Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 346116742Ssam if (ic->ic_phytype == IEEE80211_T_FH) { 347116742Ssam ni->ni_fhdwell = 200; /* XXX */ 348116742Ssam ni->ni_fhindex = 1; 349116742Ssam } 350178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 351178354Ssam vap->iv_flags |= IEEE80211_F_SIBSS; 352138568Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ 353178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 354178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 355167282Ssam else { 356167282Ssam get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN); 357167282Ssam /* clear group bit, add local bit */ 358167282Ssam ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; 359167282Ssam } 360178354Ssam } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 361178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 362178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 363153403Ssam else 364186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 365186904Ssam if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) 366186904Ssam#endif 367153403Ssam memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 368195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 369195618Srpaulo } else if (vap->iv_opmode == IEEE80211_M_MBSS) { 370195618Srpaulo ni->ni_meshidlen = vap->iv_mesh->ms_idlen; 371195618Srpaulo memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen); 372195618Srpaulo#endif 373138568Ssam } 374138568Ssam /* 375138568Ssam * Fix the channel and related attributes. 376138568Ssam */ 377178354Ssam /* clear DFS CAC state on previous channel */ 378178354Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && 379178354Ssam ic->ic_bsschan->ic_freq != chan->ic_freq && 380178354Ssam IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) 381178354Ssam ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); 382170530Ssam ic->ic_bsschan = chan; 383178354Ssam ieee80211_node_set_chan(ni, chan); 384170530Ssam ic->ic_curmode = ieee80211_chan2mode(chan); 385138568Ssam /* 386178354Ssam * Do mode-specific setup. 387138568Ssam */ 388170530Ssam if (IEEE80211_IS_CHAN_FULL(chan)) { 389170530Ssam if (IEEE80211_IS_CHAN_ANYG(chan)) { 390170530Ssam /* 391178354Ssam * Use a mixed 11b/11g basic rate set. 392170530Ssam */ 393178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 394178354Ssam IEEE80211_MODE_11G); 395178354Ssam if (vap->iv_flags & IEEE80211_F_PUREG) { 396178354Ssam /* 397178354Ssam * Also mark OFDM rates basic so 11b 398178354Ssam * stations do not join (WiFi compliance). 399178354Ssam */ 400178354Ssam ieee80211_addbasicrates(&ni->ni_rates, 401178354Ssam IEEE80211_MODE_11A); 402178354Ssam } 403170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 404170530Ssam /* 405170530Ssam * Force pure 11b rate set. 406170530Ssam */ 407178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 408170530Ssam IEEE80211_MODE_11B); 409170530Ssam } 410170530Ssam } 411138568Ssam 412170530Ssam (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); 413116742Ssam} 414116742Ssam 415170530Ssam/* 416170530Ssam * Reset bss state on transition to the INIT state. 417170530Ssam * Clear any stations from the table (they have been 418170530Ssam * deauth'd) and reset the bss node (clears key, rate 419170530Ssam * etc. state). 420170530Ssam */ 421138568Ssamvoid 422178354Ssamieee80211_reset_bss(struct ieee80211vap *vap) 423138568Ssam{ 424178354Ssam struct ieee80211com *ic = vap->iv_ic; 425138568Ssam struct ieee80211_node *ni, *obss; 426138568Ssam 427178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 428178354Ssam /* XXX multi-bss: wrong */ 429170530Ssam ieee80211_reset_erp(ic); 430140753Ssam 431178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 432207322Srpaulo KASSERT(ni != NULL, ("unable to setup initial BSS node")); 433178354Ssam obss = vap->iv_bss; 434178354Ssam vap->iv_bss = ieee80211_ref_node(ni); 435141658Ssam if (obss != NULL) { 436141658Ssam copy_bss(ni, obss); 437148843Ssam ni->ni_intval = ic->ic_bintval; 438138568Ssam ieee80211_free_node(obss); 439178354Ssam } else 440178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 441138568Ssam} 442138568Ssam 443170530Ssamstatic int 444170530Ssammatch_ssid(const struct ieee80211_node *ni, 445170530Ssam int nssid, const struct ieee80211_scan_ssid ssids[]) 446170530Ssam{ 447170530Ssam int i; 448148432Ssam 449170530Ssam for (i = 0; i < nssid; i++) { 450170530Ssam if (ni->ni_esslen == ssids[i].len && 451170530Ssam memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) 452170530Ssam return 1; 453170530Ssam } 454170530Ssam return 0; 455170530Ssam} 456170530Ssam 457170530Ssam/* 458170530Ssam * Test a node for suitability/compatibility. 459170530Ssam */ 460127767Ssamstatic int 461178354Ssamcheck_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) 462127767Ssam{ 463178354Ssam struct ieee80211com *ic = ni->ni_ic; 464170530Ssam uint8_t rate; 465170530Ssam 466170530Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 467170530Ssam return 0; 468178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 469170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 470170530Ssam return 0; 471170530Ssam } else { 472170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 473170530Ssam return 0; 474170530Ssam } 475178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 476170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 477170530Ssam return 0; 478170530Ssam } else { 479170530Ssam /* XXX does this mean privacy is supported or required? */ 480170530Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 481170530Ssam return 0; 482170530Ssam } 483170530Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 484170530Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 485170530Ssam if (rate & IEEE80211_RATE_BASIC) 486170530Ssam return 0; 487178354Ssam if (vap->iv_des_nssid != 0 && 488178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 489170530Ssam return 0; 490178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 491178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 492170530Ssam return 0; 493170530Ssam return 1; 494170530Ssam} 495170530Ssam 496170530Ssam#ifdef IEEE80211_DEBUG 497170530Ssam/* 498170530Ssam * Display node suitability/compatibility. 499170530Ssam */ 500170530Ssamstatic void 501178354Ssamcheck_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) 502170530Ssam{ 503178354Ssam struct ieee80211com *ic = ni->ni_ic; 504170530Ssam uint8_t rate; 505127767Ssam int fail; 506127767Ssam 507127767Ssam fail = 0; 508127767Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 509127767Ssam fail |= 0x01; 510178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 511127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 512127767Ssam fail |= 0x02; 513127767Ssam } else { 514127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 515127767Ssam fail |= 0x02; 516127767Ssam } 517178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 518127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 519127767Ssam fail |= 0x04; 520127767Ssam } else { 521127767Ssam /* XXX does this mean privacy is supported or required? */ 522127767Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 523127767Ssam fail |= 0x04; 524127767Ssam } 525167442Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 526165887Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 527127767Ssam if (rate & IEEE80211_RATE_BASIC) 528127767Ssam fail |= 0x08; 529178354Ssam if (vap->iv_des_nssid != 0 && 530178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 531127767Ssam fail |= 0x10; 532178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 533178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 534127767Ssam fail |= 0x20; 535127767Ssam 536170530Ssam printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); 537170530Ssam printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); 538170530Ssam printf(" %3d%c", 539170530Ssam ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); 540170530Ssam printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 541170530Ssam fail & 0x08 ? '!' : ' '); 542170530Ssam printf(" %4s%c", 543170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : 544170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : 545170530Ssam "????", 546170530Ssam fail & 0x02 ? '!' : ' '); 547170530Ssam printf(" %3s%c ", 548170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", 549170530Ssam fail & 0x04 ? '!' : ' '); 550170530Ssam ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 551170530Ssam printf("%s\n", fail & 0x10 ? "!" : ""); 552138568Ssam} 553170530Ssam#endif /* IEEE80211_DEBUG */ 554138568Ssam 555138568Ssam/* 556138568Ssam * Handle 802.11 ad hoc network merge. The 557138568Ssam * convention, set by the Wireless Ethernet Compatibility Alliance 558138568Ssam * (WECA), is that an 802.11 station will change its BSSID to match 559138568Ssam * the "oldest" 802.11 ad hoc network, on the same channel, that 560138568Ssam * has the station's desired SSID. The "oldest" 802.11 network 561138568Ssam * sends beacons with the greatest TSF timestamp. 562138568Ssam * 563138568Ssam * The caller is assumed to validate TSF's before attempting a merge. 564138568Ssam * 565138568Ssam * Return !0 if the BSSID changed, 0 otherwise. 566138568Ssam */ 567138568Ssamint 568148306Ssamieee80211_ibss_merge(struct ieee80211_node *ni) 569138568Ssam{ 570178354Ssam struct ieee80211vap *vap = ni->ni_vap; 571178354Ssam#ifdef IEEE80211_DEBUG 572148306Ssam struct ieee80211com *ic = ni->ni_ic; 573178354Ssam#endif 574138568Ssam 575178354Ssam if (ni == vap->iv_bss || 576178354Ssam IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { 577138568Ssam /* unchanged, nothing to do */ 578138568Ssam return 0; 579138568Ssam } 580178354Ssam if (!check_bss(vap, ni)) { 581170530Ssam /* capabilities mismatch */ 582178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 583138568Ssam "%s: merge failed, capabilities mismatch\n", __func__); 584170530Ssam#ifdef IEEE80211_DEBUG 585178354Ssam if (ieee80211_msg_assoc(vap)) 586178354Ssam check_bss_debug(vap, ni); 587170530Ssam#endif 588178354Ssam vap->iv_stats.is_ibss_capmismatch++; 589138568Ssam return 0; 590138568Ssam } 591178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 592138568Ssam "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, 593138568Ssam ether_sprintf(ni->ni_bssid), 594138568Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 595138568Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 596138568Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "" 597138568Ssam ); 598170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 599138568Ssam} 600138568Ssam 601138568Ssam/* 602178354Ssam * Calculate HT channel promotion flags for all vaps. 603178354Ssam * This assumes ni_chan have been setup for each vap. 604173273Ssam */ 605178354Ssamstatic int 606178354Ssamgethtadjustflags(struct ieee80211com *ic) 607178354Ssam{ 608178354Ssam struct ieee80211vap *vap; 609178354Ssam int flags; 610178354Ssam 611178354Ssam flags = 0; 612178354Ssam /* XXX locking */ 613178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 614178354Ssam if (vap->iv_state < IEEE80211_S_RUN) 615178354Ssam continue; 616178354Ssam switch (vap->iv_opmode) { 617178354Ssam case IEEE80211_M_WDS: 618178354Ssam case IEEE80211_M_STA: 619178354Ssam case IEEE80211_M_AHDEMO: 620178354Ssam case IEEE80211_M_HOSTAP: 621178354Ssam case IEEE80211_M_IBSS: 622195618Srpaulo case IEEE80211_M_MBSS: 623178354Ssam flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); 624178354Ssam break; 625178354Ssam default: 626178354Ssam break; 627178354Ssam } 628178354Ssam } 629178354Ssam return flags; 630178354Ssam} 631178354Ssam 632178354Ssam/* 633178354Ssam * Check if the current channel needs to change based on whether 634184303Ssam * any vap's are using HT20/HT40. This is used to sync the state 635184303Ssam * of ic_curchan after a channel width change on a running vap. 636178354Ssam */ 637173273Ssamvoid 638178354Ssamieee80211_sync_curchan(struct ieee80211com *ic) 639173273Ssam{ 640178354Ssam struct ieee80211_channel *c; 641178354Ssam 642178354Ssam c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); 643178354Ssam if (c != ic->ic_curchan) { 644178354Ssam ic->ic_curchan = c; 645178354Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 646190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 647191746Sthompsa IEEE80211_UNLOCK(ic); 648178354Ssam ic->ic_set_channel(ic); 649192468Ssam ieee80211_radiotap_chan_change(ic); 650191746Sthompsa IEEE80211_LOCK(ic); 651178354Ssam } 652178354Ssam} 653178354Ssam 654178354Ssam/* 655191746Sthompsa * Setup the current channel. The request channel may be 656178354Ssam * promoted if other vap's are operating with HT20/HT40. 657178354Ssam */ 658178354Ssamvoid 659191746Sthompsaieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 660178354Ssam{ 661178354Ssam if (ic->ic_htcaps & IEEE80211_HTC_HT) { 662178354Ssam int flags = gethtadjustflags(ic); 663178354Ssam /* 664178354Ssam * Check for channel promotion required to support the 665178354Ssam * set of running vap's. This assumes we are called 666178354Ssam * after ni_chan is setup for each vap. 667178354Ssam */ 668193655Ssam /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */ 669178354Ssam if (flags > ieee80211_htchanflags(c)) 670178354Ssam c = ieee80211_ht_adjust_channel(ic, c, flags); 671178354Ssam } 672178354Ssam ic->ic_bsschan = ic->ic_curchan = c; 673173273Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 674190532Ssam ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); 675173273Ssam} 676173273Ssam 677173273Ssam/* 678191746Sthompsa * Change the current channel. The channel change is guaranteed to have 679191746Sthompsa * happened before the next state change. 680191746Sthompsa */ 681191746Sthompsavoid 682191746Sthompsaieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 683191746Sthompsa{ 684191746Sthompsa ieee80211_setupcurchan(ic, c); 685191746Sthompsa ieee80211_runtask(ic, &ic->ic_chan_task); 686191746Sthompsa} 687191746Sthompsa 688233452Sadrianvoid 689233452Sadrianieee80211_update_chw(struct ieee80211com *ic) 690233452Sadrian{ 691233452Sadrian 692233452Sadrian ieee80211_setupcurchan(ic, ic->ic_curchan); 693233452Sadrian ieee80211_runtask(ic, &ic->ic_chw_task); 694233452Sadrian} 695233452Sadrian 696191746Sthompsa/* 697138568Ssam * Join the specified IBSS/BSS network. The node is assumed to 698138568Ssam * be passed in with a held reference. 699138568Ssam */ 700170530Ssamstatic int 701170530Ssamieee80211_sta_join1(struct ieee80211_node *selbs) 702138568Ssam{ 703178354Ssam struct ieee80211vap *vap = selbs->ni_vap; 704170530Ssam struct ieee80211com *ic = selbs->ni_ic; 705138568Ssam struct ieee80211_node *obss; 706170530Ssam int canreassoc; 707138568Ssam 708138568Ssam /* 709138568Ssam * Committed to selbs, setup state. 710138568Ssam */ 711178354Ssam obss = vap->iv_bss; 712170530Ssam /* 713170530Ssam * Check if old+new node have the same address in which 714170530Ssam * case we can reassociate when operating in sta mode. 715170530Ssam */ 716170530Ssam canreassoc = (obss != NULL && 717178354Ssam vap->iv_state == IEEE80211_S_RUN && 718170530Ssam IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); 719178354Ssam vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */ 720153352Ssam if (obss != NULL) { 721153352Ssam copy_bss(selbs, obss); 722188541Ssam ieee80211_node_decref(obss); /* iv_bss reference */ 723188541Ssam ieee80211_free_node(obss); /* station table reference */ 724178354Ssam obss = NULL; /* NB: guard against later use */ 725153352Ssam } 726165887Ssam 727138568Ssam /* 728165887Ssam * Delete unusable rates; we've already checked 729165887Ssam * that the negotiated rate set is acceptable. 730165887Ssam */ 731178354Ssam ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, 732167442Ssam IEEE80211_F_DODEL | IEEE80211_F_JOIN); 733165887Ssam 734178354Ssam ieee80211_setcurchan(ic, selbs->ni_chan); 735165887Ssam /* 736138568Ssam * Set the erp state (mostly the slot time) to deal with 737138568Ssam * the auto-select case; this should be redundant if the 738138568Ssam * mode is locked. 739138568Ssam */ 740138568Ssam ieee80211_reset_erp(ic); 741178354Ssam ieee80211_wme_initparams(vap); 742140753Ssam 743178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 744170530Ssam if (canreassoc) { 745170530Ssam /* Reassociate */ 746178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 747170530Ssam } else { 748170530Ssam /* 749170530Ssam * Act as if we received a DEAUTH frame in case we 750170530Ssam * are invoked from the RUN state. This will cause 751170530Ssam * us to try to re-authenticate if we are operating 752170530Ssam * as a station. 753170530Ssam */ 754178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 755170530Ssam IEEE80211_FC0_SUBTYPE_DEAUTH); 756170530Ssam } 757170530Ssam } else 758178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 759138568Ssam return 1; 760116742Ssam} 761116742Ssam 762170530Ssamint 763184274Ssamieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, 764170530Ssam const struct ieee80211_scan_entry *se) 765170530Ssam{ 766178354Ssam struct ieee80211com *ic = vap->iv_ic; 767170530Ssam struct ieee80211_node *ni; 768170530Ssam 769178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr); 770170530Ssam if (ni == NULL) { 771170530Ssam /* XXX msg */ 772170530Ssam return 0; 773170530Ssam } 774245928Sadrian 775170530Ssam /* 776170530Ssam * Expand scan state into node's format. 777170530Ssam * XXX may not need all this stuff 778170530Ssam */ 779170530Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); 780170530Ssam ni->ni_esslen = se->se_ssid[1]; 781170530Ssam memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); 782170530Ssam ni->ni_tstamp.tsf = se->se_tstamp.tsf; 783170530Ssam ni->ni_intval = se->se_intval; 784170530Ssam ni->ni_capinfo = se->se_capinfo; 785184274Ssam ni->ni_chan = chan; 786170530Ssam ni->ni_timoff = se->se_timoff; 787170530Ssam ni->ni_fhdwell = se->se_fhdwell; 788170530Ssam ni->ni_fhindex = se->se_fhindex; 789170530Ssam ni->ni_erp = se->se_erp; 790178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); 791170530Ssam ni->ni_noise = se->se_noise; 792186870Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 793186870Ssam /* NB: only infrastructure mode requires an associd */ 794186870Ssam ni->ni_flags |= IEEE80211_NODE_ASSOCID; 795186870Ssam } 796178354Ssam 797178354Ssam if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { 798178354Ssam ieee80211_ies_expand(&ni->ni_ies); 799190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 800178354Ssam if (ni->ni_ies.ath_ie != NULL) 801178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 802190391Ssam#endif 803178354Ssam if (ni->ni_ies.htcap_ie != NULL) 804178354Ssam ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); 805178354Ssam if (ni->ni_ies.htinfo_ie != NULL) 806178354Ssam ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); 807195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 808195618Srpaulo if (ni->ni_ies.meshid_ie != NULL) 809195618Srpaulo ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie); 810195618Srpaulo#endif 811186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 812186904Ssam if (ni->ni_ies.tdma_ie != NULL) 813186904Ssam ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); 814186904Ssam#endif 815173864Ssam } 816170530Ssam 817178354Ssam vap->iv_dtim_period = se->se_dtimperiod; 818178354Ssam vap->iv_dtim_count = 0; 819170530Ssam 820170530Ssam /* NB: must be after ni_chan is setup */ 821170530Ssam ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, 822170530Ssam IEEE80211_F_DOSORT); 823184279Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 824184279Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 825245928Sadrian 826245928Sadrian /* 827245928Sadrian * Setup HT state for this node if it's available, otherwise 828245928Sadrian * non-STA modes won't pick this state up. 829245928Sadrian * 830245928Sadrian * For IBSS and related modes that don't go through an 831245928Sadrian * association request/response, the only appropriate place 832245928Sadrian * to setup the HT state is here. 833245928Sadrian */ 834245928Sadrian if (ni->ni_ies.htinfo_ie != NULL && 835245928Sadrian ni->ni_ies.htcap_ie != NULL && 836245928Sadrian vap->iv_flags_ht & IEEE80211_FHT_HT) { 837245928Sadrian ieee80211_ht_node_init(ni); 838245928Sadrian ieee80211_ht_updateparams(ni, 839245928Sadrian ni->ni_ies.htcap_ie, 840245928Sadrian ni->ni_ies.htinfo_ie); 841245928Sadrian ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie, 842245928Sadrian IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 843245928Sadrian ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie); 844245928Sadrian } 845245928Sadrian /* XXX else check for ath FF? */ 846245928Sadrian /* XXX QoS? Difficult given that WME config is specific to a master */ 847245928Sadrian 848193966Ssam ieee80211_node_setuptxparms(ni); 849214894Sbschmidt ieee80211_ratectl_node_init(ni); 850170530Ssam 851170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 852170530Ssam} 853170530Ssam 854138568Ssam/* 855138568Ssam * Leave the specified IBSS/BSS network. The node is assumed to 856138568Ssam * be passed in with a held reference. 857138568Ssam */ 858138568Ssamvoid 859178354Ssamieee80211_sta_leave(struct ieee80211_node *ni) 860138568Ssam{ 861178354Ssam struct ieee80211com *ic = ni->ni_ic; 862178354Ssam 863138568Ssam ic->ic_node_cleanup(ni); 864178354Ssam ieee80211_notify_node_leave(ni); 865138568Ssam} 866138568Ssam 867178354Ssam/* 868178354Ssam * Send a deauthenticate frame and drop the station. 869178354Ssam */ 870178354Ssamvoid 871178354Ssamieee80211_node_deauth(struct ieee80211_node *ni, int reason) 872178354Ssam{ 873178354Ssam /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */ 874178354Ssam ieee80211_ref_node(ni); 875178354Ssam if (ni->ni_associd != 0) 876178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); 877178354Ssam ieee80211_node_leave(ni); 878178354Ssam ieee80211_free_node(ni); 879178354Ssam} 880178354Ssam 881116742Ssamstatic struct ieee80211_node * 882179643Ssamnode_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 883116742Ssam{ 884127768Ssam struct ieee80211_node *ni; 885138568Ssam 886186302Ssam ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node), 887127768Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 888127768Ssam return ni; 889116742Ssam} 890116742Ssam 891138568Ssam/* 892178354Ssam * Initialize an ie blob with the specified data. If previous 893178354Ssam * data exists re-use the data block. As a side effect we clear 894178354Ssam * all references to specific ie's; the caller is required to 895178354Ssam * recalculate them. 896178354Ssam */ 897178354Ssamint 898178354Ssamieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) 899178354Ssam{ 900178354Ssam /* NB: assumes data+len are the last fields */ 901178354Ssam memset(ies, 0, offsetof(struct ieee80211_ies, data)); 902178354Ssam if (ies->data != NULL && ies->len != len) { 903178354Ssam /* data size changed */ 904186302Ssam free(ies->data, M_80211_NODE_IE); 905178354Ssam ies->data = NULL; 906178354Ssam } 907178354Ssam if (ies->data == NULL) { 908186302Ssam ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT); 909178354Ssam if (ies->data == NULL) { 910178354Ssam ies->len = 0; 911178354Ssam /* NB: pointers have already been zero'd above */ 912178354Ssam return 0; 913178354Ssam } 914178354Ssam } 915178354Ssam memcpy(ies->data, data, len); 916178354Ssam ies->len = len; 917178354Ssam return 1; 918178354Ssam} 919178354Ssam 920178354Ssam/* 921178354Ssam * Reclaim storage for an ie blob. 922178354Ssam */ 923178354Ssamvoid 924178354Ssamieee80211_ies_cleanup(struct ieee80211_ies *ies) 925178354Ssam{ 926178354Ssam if (ies->data != NULL) 927186302Ssam free(ies->data, M_80211_NODE_IE); 928178354Ssam} 929178354Ssam 930178354Ssam/* 931178354Ssam * Expand an ie blob data contents and to fillin individual 932178354Ssam * ie pointers. The data blob is assumed to be well-formed; 933178354Ssam * we don't do any validity checking of ie lengths. 934178354Ssam */ 935178354Ssamvoid 936178354Ssamieee80211_ies_expand(struct ieee80211_ies *ies) 937178354Ssam{ 938178354Ssam uint8_t *ie; 939178354Ssam int ielen; 940178354Ssam 941178354Ssam ie = ies->data; 942178354Ssam ielen = ies->len; 943178354Ssam while (ielen > 0) { 944178354Ssam switch (ie[0]) { 945178354Ssam case IEEE80211_ELEMID_VENDOR: 946178354Ssam if (iswpaoui(ie)) 947178354Ssam ies->wpa_ie = ie; 948178354Ssam else if (iswmeoui(ie)) 949178354Ssam ies->wme_ie = ie; 950190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 951178354Ssam else if (isatherosoui(ie)) 952178354Ssam ies->ath_ie = ie; 953190391Ssam#endif 954186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 955186904Ssam else if (istdmaoui(ie)) 956186904Ssam ies->tdma_ie = ie; 957186904Ssam#endif 958178354Ssam break; 959178354Ssam case IEEE80211_ELEMID_RSN: 960178354Ssam ies->rsn_ie = ie; 961178354Ssam break; 962178354Ssam case IEEE80211_ELEMID_HTCAP: 963178354Ssam ies->htcap_ie = ie; 964178354Ssam break; 965245928Sadrian case IEEE80211_ELEMID_HTINFO: 966245928Sadrian ies->htinfo_ie = ie; 967245928Sadrian break; 968195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 969195618Srpaulo case IEEE80211_ELEMID_MESHID: 970195618Srpaulo ies->meshid_ie = ie; 971195618Srpaulo break; 972195618Srpaulo#endif 973178354Ssam } 974178354Ssam ielen -= 2 + ie[1]; 975178354Ssam ie += 2 + ie[1]; 976178354Ssam } 977178354Ssam} 978178354Ssam 979178354Ssam/* 980138568Ssam * Reclaim any resources in a node and reset any critical 981138568Ssam * state. Typically nodes are free'd immediately after, 982138568Ssam * but in some cases the storage may be reused so we need 983138568Ssam * to insure consistent state (should probably fix that). 984138568Ssam */ 985116742Ssamstatic void 986138568Ssamnode_cleanup(struct ieee80211_node *ni) 987116742Ssam{ 988178354Ssam struct ieee80211vap *vap = ni->ni_vap; 989195379Ssam struct ieee80211com *ic = ni->ni_ic; 990170530Ssam int i; 991138568Ssam 992138568Ssam /* NB: preserve ni_table */ 993138568Ssam if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { 994178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 995178354Ssam vap->iv_ps_sta--; 996138568Ssam ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; 997178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, 998178354Ssam "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); 999138568Ssam } 1000147788Ssam /* 1001173273Ssam * Cleanup any HT-related state. 1002173273Ssam */ 1003173273Ssam if (ni->ni_flags & IEEE80211_NODE_HT) 1004173273Ssam ieee80211_ht_node_cleanup(ni); 1005190579Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1006190579Ssam else if (ni->ni_ath_flags & IEEE80211_NODE_ATH) 1007190579Ssam ieee80211_ff_node_cleanup(ni); 1008190579Ssam#endif 1009195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 1010173273Ssam /* 1011195618Srpaulo * Cleanup any mesh-related state. 1012195618Srpaulo */ 1013195618Srpaulo if (vap->iv_opmode == IEEE80211_M_MBSS) 1014195618Srpaulo ieee80211_mesh_node_cleanup(ni); 1015195618Srpaulo#endif 1016195618Srpaulo /* 1017195379Ssam * Clear any staging queue entries. 1018195379Ssam */ 1019195379Ssam ieee80211_ageq_drain_node(&ic->ic_stageq, ni); 1020195379Ssam 1021195379Ssam /* 1022147788Ssam * Clear AREF flag that marks the authorization refcnt bump 1023147788Ssam * has happened. This is probably not needed as the node 1024147788Ssam * should always be removed from the table so not found but 1025147788Ssam * do it just in case. 1026186099Ssam * Likewise clear the ASSOCID flag as these flags are intended 1027186099Ssam * to be managed in tandem. 1028147788Ssam */ 1029186099Ssam ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); 1030138568Ssam 1031138568Ssam /* 1032138568Ssam * Drain power save queue and, if needed, clear TIM. 1033138568Ssam */ 1034184288Ssam if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) 1035178354Ssam vap->iv_set_tim(ni, 0); 1036138568Ssam 1037138568Ssam ni->ni_associd = 0; 1038138568Ssam if (ni->ni_challenge != NULL) { 1039186302Ssam free(ni->ni_challenge, M_80211_NODE); 1040138568Ssam ni->ni_challenge = NULL; 1041138568Ssam } 1042138568Ssam /* 1043138568Ssam * Preserve SSID, WPA, and WME ie's so the bss node is 1044138568Ssam * reusable during a re-auth/re-assoc state transition. 1045138568Ssam * If we remove these data they will not be recreated 1046138568Ssam * because they come from a probe-response or beacon frame 1047138568Ssam * which cannot be expected prior to the association-response. 1048138568Ssam * This should not be an issue when operating in other modes 1049138568Ssam * as stations leaving always go through a full state transition 1050138568Ssam * which will rebuild this state. 1051138568Ssam * 1052138568Ssam * XXX does this leave us open to inheriting old state? 1053138568Ssam */ 1054254315Srpaulo for (i = 0; i < nitems(ni->ni_rxfrag); i++) 1055138568Ssam if (ni->ni_rxfrag[i] != NULL) { 1056138568Ssam m_freem(ni->ni_rxfrag[i]); 1057138568Ssam ni->ni_rxfrag[i] = NULL; 1058138568Ssam } 1059148863Ssam /* 1060148863Ssam * Must be careful here to remove any key map entry w/o a LOR. 1061148863Ssam */ 1062148863Ssam ieee80211_node_delucastkey(ni); 1063116742Ssam} 1064116742Ssam 1065116742Ssamstatic void 1066138568Ssamnode_free(struct ieee80211_node *ni) 1067116742Ssam{ 1068138568Ssam struct ieee80211com *ic = ni->ni_ic; 1069138568Ssam 1070214894Sbschmidt ieee80211_ratectl_node_deinit(ni); 1071138568Ssam ic->ic_node_cleanup(ni); 1072178354Ssam ieee80211_ies_cleanup(&ni->ni_ies); 1073184288Ssam ieee80211_psq_cleanup(&ni->ni_psq); 1074186302Ssam free(ni, M_80211_NODE); 1075116742Ssam} 1076116742Ssam 1077178354Ssamstatic void 1078178354Ssamnode_age(struct ieee80211_node *ni) 1079178354Ssam{ 1080178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1081184303Ssam 1082184303Ssam IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta); 1083184303Ssam 1084178354Ssam /* 1085178354Ssam * Age frames on the power save queue. 1086178354Ssam */ 1087184288Ssam if (ieee80211_node_psq_age(ni) != 0 && 1088184288Ssam ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) 1089178354Ssam vap->iv_set_tim(ni, 0); 1090178354Ssam /* 1091178354Ssam * Age out HT resources (e.g. frames on the 1092178354Ssam * A-MPDU reorder queues). 1093178354Ssam */ 1094178354Ssam if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) 1095178354Ssam ieee80211_ht_node_age(ni); 1096178354Ssam} 1097178354Ssam 1098170530Ssamstatic int8_t 1099138568Ssamnode_getrssi(const struct ieee80211_node *ni) 1100120104Ssam{ 1101178354Ssam uint32_t avgrssi = ni->ni_avgrssi; 1102178354Ssam int32_t rssi; 1103178354Ssam 1104178354Ssam if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) 1105178354Ssam return 0; 1106178354Ssam rssi = IEEE80211_RSSI_GET(avgrssi); 1107178354Ssam return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; 1108120104Ssam} 1109120104Ssam 1110116742Ssamstatic void 1111170530Ssamnode_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) 1112170530Ssam{ 1113178354Ssam *rssi = node_getrssi(ni); 1114170530Ssam *noise = ni->ni_noise; 1115170530Ssam} 1116170530Ssam 1117170530Ssamstatic void 1118178354Ssamnode_getmimoinfo(const struct ieee80211_node *ni, 1119178354Ssam struct ieee80211_mimo_info *info) 1120116742Ssam{ 1121220445Sadrian int i; 1122220445Sadrian uint32_t avgrssi; 1123220445Sadrian int32_t rssi; 1124220445Sadrian 1125220445Sadrian bzero(info, sizeof(*info)); 1126220445Sadrian 1127220445Sadrian for (i = 0; i < ni->ni_mimo_chains; i++) { 1128220445Sadrian avgrssi = ni->ni_mimo_rssi_ctl[i]; 1129220445Sadrian if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) { 1130220935Sadrian info->rssi[i] = 0; 1131220445Sadrian } else { 1132220445Sadrian rssi = IEEE80211_RSSI_GET(avgrssi); 1133220935Sadrian info->rssi[i] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; 1134220445Sadrian } 1135220935Sadrian info->noise[i] = ni->ni_mimo_noise_ctl[i]; 1136220445Sadrian } 1137220445Sadrian 1138220935Sadrian /* XXX ext radios? */ 1139220935Sadrian 1140220445Sadrian /* XXX EVM? */ 1141178354Ssam} 1142178354Ssam 1143178354Ssamstruct ieee80211_node * 1144178354Ssamieee80211_alloc_node(struct ieee80211_node_table *nt, 1145178354Ssam struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1146178354Ssam{ 1147138568Ssam struct ieee80211com *ic = nt->nt_ic; 1148178354Ssam struct ieee80211_node *ni; 1149116742Ssam int hash; 1150116742Ssam 1151179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1152178354Ssam if (ni == NULL) { 1153178354Ssam vap->iv_stats.is_rx_nodealloc++; 1154178354Ssam return NULL; 1155178354Ssam } 1156178354Ssam 1157178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1158140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1159138568Ssam ether_sprintf(macaddr), nt->nt_name); 1160138568Ssam 1161116742Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1162195618Srpaulo hash = IEEE80211_NODE_HASH(ic, macaddr); 1163138568Ssam ieee80211_node_initref(ni); /* mark referenced */ 1164138568Ssam ni->ni_chan = IEEE80211_CHAN_ANYC; 1165138568Ssam ni->ni_authmode = IEEE80211_AUTH_OPEN; 1166138568Ssam ni->ni_txpower = ic->ic_txpowlimit; /* max power */ 1167183251Ssam ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 1168178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); 1169178354Ssam ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; 1170139528Ssam ni->ni_inact_reload = nt->nt_inact_init; 1171139528Ssam ni->ni_inact = ni->ni_inact_reload; 1172170530Ssam ni->ni_ath_defkeyix = 0x7fff; 1173184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1174195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 1175195618Srpaulo if (vap->iv_opmode == IEEE80211_M_MBSS) 1176195618Srpaulo ieee80211_mesh_node_init(vap, ni); 1177195618Srpaulo#endif 1178138568Ssam IEEE80211_NODE_LOCK(nt); 1179138568Ssam TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); 1180138568Ssam LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); 1181138568Ssam ni->ni_table = nt; 1182178354Ssam ni->ni_vap = vap; 1183138568Ssam ni->ni_ic = ic; 1184138568Ssam IEEE80211_NODE_UNLOCK(nt); 1185116742Ssam 1186184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1187184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 1188184277Ssam 1189217511Sbschmidt ieee80211_ratectl_node_init(ni); 1190217511Sbschmidt 1191116742Ssam return ni; 1192116742Ssam} 1193116742Ssam 1194148777Ssam/* 1195148777Ssam * Craft a temporary node suitable for sending a management frame 1196148777Ssam * to the specified station. We craft only as much state as we 1197148777Ssam * need to do the work since the node will be immediately reclaimed 1198148777Ssam * once the send completes. 1199148777Ssam */ 1200116742Ssamstruct ieee80211_node * 1201178354Ssamieee80211_tmp_node(struct ieee80211vap *vap, 1202178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1203148777Ssam{ 1204178354Ssam struct ieee80211com *ic = vap->iv_ic; 1205148777Ssam struct ieee80211_node *ni; 1206148777Ssam 1207179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1208148777Ssam if (ni != NULL) { 1209183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1210183259Ssam 1211178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1212148777Ssam "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); 1213148777Ssam 1214178354Ssam ni->ni_table = NULL; /* NB: pedantic */ 1215178354Ssam ni->ni_ic = ic; /* NB: needed to set channel */ 1216178354Ssam ni->ni_vap = vap; 1217178354Ssam 1218148777Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1219183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1220148777Ssam ieee80211_node_initref(ni); /* mark referenced */ 1221148777Ssam /* NB: required by ieee80211_fix_rate */ 1222183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1223178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, 1224148777Ssam IEEE80211_KEYIX_NONE); 1225183259Ssam ni->ni_txpower = bss->ni_txpower; 1226148777Ssam /* XXX optimize away */ 1227184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1228217511Sbschmidt 1229217511Sbschmidt ieee80211_ratectl_node_init(ni); 1230148777Ssam } else { 1231148777Ssam /* XXX msg */ 1232178354Ssam vap->iv_stats.is_rx_nodealloc++; 1233148777Ssam } 1234148777Ssam return ni; 1235148777Ssam} 1236148777Ssam 1237148777Ssamstruct ieee80211_node * 1238178354Ssamieee80211_dup_bss(struct ieee80211vap *vap, 1239178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1240116742Ssam{ 1241178354Ssam struct ieee80211com *ic = vap->iv_ic; 1242138568Ssam struct ieee80211_node *ni; 1243138568Ssam 1244178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr); 1245116742Ssam if (ni != NULL) { 1246183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1247127770Ssam /* 1248178354Ssam * Inherit from iv_bss. 1249127770Ssam */ 1250183259Ssam copy_bss(ni, bss); 1251183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1252183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1253178354Ssam } 1254116742Ssam return ni; 1255116742Ssam} 1256116742Ssam 1257178354Ssam/* 1258178354Ssam * Create a bss node for a legacy WDS vap. The far end does 1259178354Ssam * not associate so we just create create a new node and 1260178354Ssam * simulate an association. The caller is responsible for 1261178354Ssam * installing the node as the bss node and handling any further 1262178354Ssam * setup work like authorizing the port. 1263178354Ssam */ 1264178354Ssamstruct ieee80211_node * 1265178354Ssamieee80211_node_create_wds(struct ieee80211vap *vap, 1266178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) 1267178354Ssam{ 1268178354Ssam struct ieee80211com *ic = vap->iv_ic; 1269178354Ssam struct ieee80211_node *ni; 1270178354Ssam 1271178354Ssam /* XXX check if node already in sta table? */ 1272178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid); 1273178354Ssam if (ni != NULL) { 1274178354Ssam ni->ni_wdsvap = vap; 1275178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); 1276178354Ssam /* 1277178354Ssam * Inherit any manually configured settings. 1278178354Ssam */ 1279183259Ssam copy_bss(ni, vap->iv_bss); 1280178354Ssam ieee80211_node_set_chan(ni, chan); 1281178354Ssam /* NB: propagate ssid so available to WPA supplicant */ 1282178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 1283178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 1284178354Ssam /* NB: no associd for peer */ 1285178354Ssam /* 1286178354Ssam * There are no management frames to use to 1287178354Ssam * discover neighbor capabilities, so blindly 1288178354Ssam * propagate the local configuration. 1289178354Ssam */ 1290178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1291178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1292190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1293178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1294178354Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1295190391Ssam#endif 1296178354Ssam if ((ic->ic_htcaps & IEEE80211_HTC_HT) && 1297193655Ssam (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1298178354Ssam /* 1299178354Ssam * Device is HT-capable and HT is enabled for 1300178354Ssam * the vap; setup HT operation. On return 1301178354Ssam * ni_chan will be adjusted to an HT channel. 1302178354Ssam */ 1303178354Ssam ieee80211_ht_wds_init(ni); 1304178354Ssam } else { 1305178354Ssam struct ieee80211_channel *c = ni->ni_chan; 1306178354Ssam /* 1307178354Ssam * Force a legacy channel to be used. 1308178354Ssam */ 1309178354Ssam c = ieee80211_find_channel(ic, 1310178354Ssam c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); 1311178354Ssam KASSERT(c != NULL, ("no legacy channel, %u/%x", 1312178354Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); 1313178354Ssam ni->ni_chan = c; 1314178354Ssam } 1315178354Ssam } 1316178354Ssam return ni; 1317178354Ssam} 1318178354Ssam 1319178354Ssamstruct ieee80211_node * 1320138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1321178354Ssamieee80211_find_node_locked_debug(struct ieee80211_node_table *nt, 1322178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1323138568Ssam#else 1324178354Ssamieee80211_find_node_locked(struct ieee80211_node_table *nt, 1325178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1326138568Ssam#endif 1327116742Ssam{ 1328116742Ssam struct ieee80211_node *ni; 1329116742Ssam int hash; 1330116742Ssam 1331138568Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1332127772Ssam 1333195618Srpaulo hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); 1334138568Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1335116742Ssam if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1336138568Ssam ieee80211_ref_node(ni); /* mark referenced */ 1337138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1338178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1339140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1340140766Ssam func, line, 1341140766Ssam ni, ether_sprintf(ni->ni_macaddr), 1342140766Ssam ieee80211_node_refcnt(ni)); 1343138568Ssam#endif 1344127772Ssam return ni; 1345116742Ssam } 1346116742Ssam } 1347127772Ssam return NULL; 1348127772Ssam} 1349178354Ssam 1350178354Ssamstruct ieee80211_node * 1351138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1352178354Ssamieee80211_find_node_debug(struct ieee80211_node_table *nt, 1353178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1354178354Ssam#else 1355178354Ssamieee80211_find_node(struct ieee80211_node_table *nt, 1356178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1357138568Ssam#endif 1358178354Ssam{ 1359178354Ssam struct ieee80211_node *ni; 1360127772Ssam 1361178354Ssam IEEE80211_NODE_LOCK(nt); 1362178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1363178354Ssam IEEE80211_NODE_UNLOCK(nt); 1364178354Ssam return ni; 1365178354Ssam} 1366178354Ssam 1367127772Ssamstruct ieee80211_node * 1368138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1369178354Ssamieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt, 1370178354Ssam const struct ieee80211vap *vap, 1371178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1372138568Ssam#else 1373178354Ssamieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, 1374178354Ssam const struct ieee80211vap *vap, 1375178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1376138568Ssam#endif 1377127772Ssam{ 1378127772Ssam struct ieee80211_node *ni; 1379178354Ssam int hash; 1380127772Ssam 1381178354Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1382178354Ssam 1383195618Srpaulo hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); 1384178354Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1385178354Ssam if (ni->ni_vap == vap && 1386178354Ssam IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1387178354Ssam ieee80211_ref_node(ni); /* mark referenced */ 1388178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1389178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1390178354Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1391178354Ssam func, line, 1392178354Ssam ni, ether_sprintf(ni->ni_macaddr), 1393178354Ssam ieee80211_node_refcnt(ni)); 1394178354Ssam#endif 1395178354Ssam return ni; 1396178354Ssam } 1397178354Ssam } 1398178354Ssam return NULL; 1399178354Ssam} 1400178354Ssam 1401178354Ssamstruct ieee80211_node * 1402178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1403178354Ssamieee80211_find_vap_node_debug(struct ieee80211_node_table *nt, 1404178354Ssam const struct ieee80211vap *vap, 1405178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1406178354Ssam#else 1407178354Ssamieee80211_find_vap_node(struct ieee80211_node_table *nt, 1408178354Ssam const struct ieee80211vap *vap, 1409178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1410178354Ssam#endif 1411178354Ssam{ 1412178354Ssam struct ieee80211_node *ni; 1413178354Ssam 1414138568Ssam IEEE80211_NODE_LOCK(nt); 1415178354Ssam ni = ieee80211_find_vap_node_locked(nt, vap, macaddr); 1416138568Ssam IEEE80211_NODE_UNLOCK(nt); 1417116742Ssam return ni; 1418116742Ssam} 1419116742Ssam 1420116742Ssam/* 1421138568Ssam * Fake up a node; this handles node discovery in adhoc mode. 1422138568Ssam * Note that for the driver's benefit we we treat this like 1423138568Ssam * an association so the driver has an opportunity to setup 1424138568Ssam * it's private state. 1425138568Ssam */ 1426138568Ssamstruct ieee80211_node * 1427178354Ssamieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, 1428170530Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1429138568Ssam{ 1430138568Ssam struct ieee80211_node *ni; 1431138568Ssam 1432245928Sadrian IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC, 1433153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); 1434178354Ssam ni = ieee80211_dup_bss(vap, macaddr); 1435138568Ssam if (ni != NULL) { 1436178354Ssam struct ieee80211com *ic = vap->iv_ic; 1437178354Ssam 1438138568Ssam /* XXX no rate negotiation; just dup */ 1439178354Ssam ni->ni_rates = vap->iv_bss->ni_rates; 1440188869Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 1441188869Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 1442178354Ssam if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 1443153404Ssam /* 1444170530Ssam * In adhoc demo mode there are no management 1445170530Ssam * frames to use to discover neighbor capabilities, 1446170530Ssam * so blindly propagate the local configuration 1447170530Ssam * so we can do interesting things (e.g. use 1448170530Ssam * WME to disable ACK's). 1449153404Ssam */ 1450178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1451153404Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1452190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1453178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1454170530Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1455190391Ssam#endif 1456153404Ssam } 1457193966Ssam ieee80211_node_setuptxparms(ni); 1458214894Sbschmidt ieee80211_ratectl_node_init(ni); 1459178354Ssam if (ic->ic_newassoc != NULL) 1460178354Ssam ic->ic_newassoc(ni, 1); 1461170530Ssam /* XXX not right for 802.1x/WPA */ 1462170530Ssam ieee80211_node_authorize(ni); 1463138568Ssam } 1464138568Ssam return ni; 1465138568Ssam} 1466138568Ssam 1467148936Ssamvoid 1468153073Ssamieee80211_init_neighbor(struct ieee80211_node *ni, 1469153073Ssam const struct ieee80211_frame *wh, 1470153073Ssam const struct ieee80211_scanparams *sp) 1471153073Ssam{ 1472245928Sadrian int do_ht_setup = 0; 1473245928Sadrian 1474153073Ssam ni->ni_esslen = sp->ssid[1]; 1475153073Ssam memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); 1476153073Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); 1477153073Ssam memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); 1478153073Ssam ni->ni_intval = sp->bintval; 1479153073Ssam ni->ni_capinfo = sp->capinfo; 1480153073Ssam ni->ni_chan = ni->ni_ic->ic_curchan; 1481153073Ssam ni->ni_fhdwell = sp->fhdwell; 1482153073Ssam ni->ni_fhindex = sp->fhindex; 1483153073Ssam ni->ni_erp = sp->erp; 1484153073Ssam ni->ni_timoff = sp->timoff; 1485195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 1486195618Srpaulo if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS) 1487195618Srpaulo ieee80211_mesh_init_neighbor(ni, wh, sp); 1488195618Srpaulo#endif 1489178354Ssam if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { 1490178354Ssam ieee80211_ies_expand(&ni->ni_ies); 1491186659Ssam if (ni->ni_ies.wme_ie != NULL) 1492186659Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1493186659Ssam else 1494186659Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1495190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 1496178354Ssam if (ni->ni_ies.ath_ie != NULL) 1497178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 1498190391Ssam#endif 1499245928Sadrian if (ni->ni_ies.htcap_ie != NULL) 1500245928Sadrian ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); 1501245928Sadrian if (ni->ni_ies.htinfo_ie != NULL) 1502245928Sadrian ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); 1503245928Sadrian 1504245928Sadrian if ((ni->ni_ies.htcap_ie != NULL) && 1505245928Sadrian (ni->ni_ies.htinfo_ie != NULL) && 1506245928Sadrian (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) { 1507245928Sadrian do_ht_setup = 1; 1508245928Sadrian } 1509178354Ssam } 1510178354Ssam 1511153073Ssam /* NB: must be after ni_chan is setup */ 1512165887Ssam ieee80211_setup_rates(ni, sp->rates, sp->xrates, 1513165887Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1514165887Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1515245928Sadrian 1516245928Sadrian /* 1517245928Sadrian * If the neighbor is HT compatible, flip that on. 1518245928Sadrian */ 1519245928Sadrian if (do_ht_setup) { 1520245928Sadrian IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 1521245928Sadrian "%s: doing HT setup\n", __func__); 1522245928Sadrian ieee80211_ht_node_init(ni); 1523245928Sadrian ieee80211_ht_updateparams(ni, 1524245928Sadrian ni->ni_ies.htcap_ie, 1525245928Sadrian ni->ni_ies.htinfo_ie); 1526245928Sadrian ieee80211_setup_htrates(ni, 1527245928Sadrian ni->ni_ies.htcap_ie, 1528245928Sadrian IEEE80211_F_JOIN | IEEE80211_F_DOBRS); 1529245928Sadrian ieee80211_setup_basic_htrates(ni, 1530245928Sadrian ni->ni_ies.htinfo_ie); 1531245928Sadrian ieee80211_node_setuptxparms(ni); 1532245928Sadrian ieee80211_ratectl_node_init(ni); 1533245928Sadrian } 1534153073Ssam} 1535153073Ssam 1536148936Ssam/* 1537148936Ssam * Do node discovery in adhoc mode on receipt of a beacon 1538148936Ssam * or probe response frame. Note that for the driver's 1539148936Ssam * benefit we we treat this like an association so the 1540148936Ssam * driver has an opportunity to setup it's private state. 1541148936Ssam */ 1542148936Ssamstruct ieee80211_node * 1543178354Ssamieee80211_add_neighbor(struct ieee80211vap *vap, 1544148936Ssam const struct ieee80211_frame *wh, 1545148936Ssam const struct ieee80211_scanparams *sp) 1546148936Ssam{ 1547148936Ssam struct ieee80211_node *ni; 1548148936Ssam 1549245928Sadrian IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 1550153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); 1551178354Ssam ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ 1552148936Ssam if (ni != NULL) { 1553178354Ssam struct ieee80211com *ic = vap->iv_ic; 1554178354Ssam 1555153073Ssam ieee80211_init_neighbor(ni, wh, sp); 1556188869Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 1557188869Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 1558193966Ssam ieee80211_node_setuptxparms(ni); 1559214894Sbschmidt ieee80211_ratectl_node_init(ni); 1560148936Ssam if (ic->ic_newassoc != NULL) 1561148936Ssam ic->ic_newassoc(ni, 1); 1562148936Ssam /* XXX not right for 802.1x/WPA */ 1563148936Ssam ieee80211_node_authorize(ni); 1564148936Ssam } 1565148936Ssam return ni; 1566148936Ssam} 1567148936Ssam 1568179220Ssam#define IS_PROBEREQ(wh) \ 1569179220Ssam ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ 1570179220Ssam == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) 1571179220Ssam#define IS_BCAST_PROBEREQ(wh) \ 1572179220Ssam (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ 1573179220Ssam ((const struct ieee80211_frame *)(wh))->i_addr3)) 1574170530Ssam 1575179220Ssamstatic __inline struct ieee80211_node * 1576179220Ssam_find_rxnode(struct ieee80211_node_table *nt, 1577179220Ssam const struct ieee80211_frame_min *wh) 1578179220Ssam{ 1579179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1580179220Ssam return NULL; /* spam bcast probe req to all vap's */ 1581179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr2); 1582179220Ssam} 1583179220Ssam 1584138568Ssam/* 1585138568Ssam * Locate the node for sender, track state, and then pass the 1586179220Ssam * (referenced) node up to the 802.11 layer for its use. Note 1587179220Ssam * we can return NULL if the sender is not in the table. 1588138568Ssam */ 1589138568Ssamstruct ieee80211_node * 1590138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1591138568Ssamieee80211_find_rxnode_debug(struct ieee80211com *ic, 1592138568Ssam const struct ieee80211_frame_min *wh, const char *func, int line) 1593138568Ssam#else 1594138568Ssamieee80211_find_rxnode(struct ieee80211com *ic, 1595138568Ssam const struct ieee80211_frame_min *wh) 1596138568Ssam#endif 1597138568Ssam{ 1598138568Ssam struct ieee80211_node_table *nt; 1599138568Ssam struct ieee80211_node *ni; 1600138568Ssam 1601170530Ssam nt = &ic->ic_sta; 1602138568Ssam IEEE80211_NODE_LOCK(nt); 1603179220Ssam ni = _find_rxnode(nt, wh); 1604138568Ssam IEEE80211_NODE_UNLOCK(nt); 1605138568Ssam 1606148863Ssam return ni; 1607148863Ssam} 1608148863Ssam 1609148863Ssam/* 1610148863Ssam * Like ieee80211_find_rxnode but use the supplied h/w 1611148863Ssam * key index as a hint to locate the node in the key 1612148863Ssam * mapping table. If an entry is present at the key 1613148863Ssam * index we return it; otherwise do a normal lookup and 1614148863Ssam * update the mapping table if the station has a unicast 1615148863Ssam * key assigned to it. 1616148863Ssam */ 1617148863Ssamstruct ieee80211_node * 1618148863Ssam#ifdef IEEE80211_DEBUG_REFCNT 1619148863Ssamieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic, 1620148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, 1621148863Ssam const char *func, int line) 1622148863Ssam#else 1623148863Ssamieee80211_find_rxnode_withkey(struct ieee80211com *ic, 1624148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix) 1625148863Ssam#endif 1626148863Ssam{ 1627148863Ssam struct ieee80211_node_table *nt; 1628148863Ssam struct ieee80211_node *ni; 1629148863Ssam 1630170530Ssam nt = &ic->ic_sta; 1631148863Ssam IEEE80211_NODE_LOCK(nt); 1632148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) 1633148863Ssam ni = nt->nt_keyixmap[keyix]; 1634148863Ssam else 1635148863Ssam ni = NULL; 1636148863Ssam if (ni == NULL) { 1637179220Ssam ni = _find_rxnode(nt, wh); 1638178354Ssam if (ni != NULL && nt->nt_keyixmap != NULL) { 1639148863Ssam /* 1640148863Ssam * If the station has a unicast key cache slot 1641148863Ssam * assigned update the key->node mapping table. 1642148863Ssam */ 1643148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1644148863Ssam /* XXX can keyixmap[keyix] != NULL? */ 1645148863Ssam if (keyix < nt->nt_keyixmax && 1646148863Ssam nt->nt_keyixmap[keyix] == NULL) { 1647178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1648178354Ssam IEEE80211_MSG_NODE, 1649148863Ssam "%s: add key map entry %p<%s> refcnt %d\n", 1650148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1651148863Ssam ieee80211_node_refcnt(ni)+1); 1652148863Ssam nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); 1653148863Ssam } 1654148863Ssam } 1655179220Ssam } else { 1656179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1657179220Ssam ni = NULL; /* spam bcast probe req to all vap's */ 1658179220Ssam else 1659179220Ssam ieee80211_ref_node(ni); 1660179220Ssam } 1661148863Ssam IEEE80211_NODE_UNLOCK(nt); 1662148863Ssam 1663148863Ssam return ni; 1664148863Ssam} 1665179220Ssam#undef IS_BCAST_PROBEREQ 1666179220Ssam#undef IS_PROBEREQ 1667138568Ssam 1668138568Ssam/* 1669127772Ssam * Return a reference to the appropriate node for sending 1670127772Ssam * a data frame. This handles node discovery in adhoc networks. 1671127772Ssam */ 1672127772Ssamstruct ieee80211_node * 1673138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1674178354Ssamieee80211_find_txnode_debug(struct ieee80211vap *vap, 1675178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], 1676138568Ssam const char *func, int line) 1677138568Ssam#else 1678178354Ssamieee80211_find_txnode(struct ieee80211vap *vap, 1679178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1680138568Ssam#endif 1681127772Ssam{ 1682178354Ssam struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; 1683127772Ssam struct ieee80211_node *ni; 1684127772Ssam 1685127772Ssam /* 1686127772Ssam * The destination address should be in the node table 1687148863Ssam * unless this is a multicast/broadcast frame. We can 1688148863Ssam * also optimize station mode operation, all frames go 1689148863Ssam * to the bss node. 1690127772Ssam */ 1691127772Ssam /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ 1692138568Ssam IEEE80211_NODE_LOCK(nt); 1693178354Ssam if (vap->iv_opmode == IEEE80211_M_STA || 1694178354Ssam vap->iv_opmode == IEEE80211_M_WDS || 1695178354Ssam IEEE80211_IS_MULTICAST(macaddr)) 1696178354Ssam ni = ieee80211_ref_node(vap->iv_bss); 1697186099Ssam else 1698178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1699138568Ssam IEEE80211_NODE_UNLOCK(nt); 1700138568Ssam 1701138568Ssam if (ni == NULL) { 1702178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS || 1703178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO) { 1704140497Ssam /* 1705140497Ssam * In adhoc mode cons up a node for the destination. 1706140497Ssam * Note that we need an additional reference for the 1707178354Ssam * caller to be consistent with 1708178354Ssam * ieee80211_find_node_locked. 1709140497Ssam */ 1710178354Ssam ni = ieee80211_fakeup_adhoc_node(vap, macaddr); 1711140497Ssam if (ni != NULL) 1712140497Ssam (void) ieee80211_ref_node(ni); 1713140497Ssam } else { 1714178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, 1715178354Ssam "no node, discard frame (%s)", __func__); 1716178354Ssam vap->iv_stats.is_tx_nonode++; 1717127772Ssam } 1718127772Ssam } 1719127772Ssam return ni; 1720127772Ssam} 1721127772Ssam 1722116742Ssamstatic void 1723138568Ssam_ieee80211_free_node(struct ieee80211_node *ni) 1724116742Ssam{ 1725138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1726119150Ssam 1727179641Ssam /* 1728179641Ssam * NB: careful about referencing the vap as it may be 1729179641Ssam * gone if the last reference was held by a driver. 1730179641Ssam * We know the com will always be present so it's safe 1731179641Ssam * to use ni_ic below to reclaim resources. 1732179641Ssam */ 1733179641Ssam#if 0 1734178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1735140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1736140766Ssam ether_sprintf(ni->ni_macaddr), 1737138568Ssam nt != NULL ? nt->nt_name : "<gone>"); 1738179641Ssam#endif 1739179641Ssam if (ni->ni_associd != 0) { 1740179641Ssam struct ieee80211vap *vap = ni->ni_vap; 1741179641Ssam if (vap->iv_aid_bitmap != NULL) 1742179641Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1743179641Ssam } 1744138568Ssam if (nt != NULL) { 1745138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1746138568Ssam LIST_REMOVE(ni, ni_hash); 1747138568Ssam } 1748179641Ssam ni->ni_ic->ic_node_free(ni); 1749116742Ssam} 1750116742Ssam 1751116742Ssamvoid 1752138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1753138568Ssamieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line) 1754138568Ssam#else 1755138568Ssamieee80211_free_node(struct ieee80211_node *ni) 1756138568Ssam#endif 1757116742Ssam{ 1758138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1759119150Ssam 1760138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1761178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1762140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, 1763138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1764138568Ssam#endif 1765148863Ssam if (nt != NULL) { 1766148863Ssam IEEE80211_NODE_LOCK(nt); 1767148863Ssam if (ieee80211_node_dectestref(ni)) { 1768148863Ssam /* 1769148863Ssam * Last reference, reclaim state. 1770148863Ssam */ 1771138568Ssam _ieee80211_free_node(ni); 1772148863Ssam } else if (ieee80211_node_refcnt(ni) == 1 && 1773148863Ssam nt->nt_keyixmap != NULL) { 1774148863Ssam ieee80211_keyix keyix; 1775148863Ssam /* 1776148863Ssam * Check for a last reference in the key mapping table. 1777148863Ssam */ 1778148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1779148863Ssam if (keyix < nt->nt_keyixmax && 1780148863Ssam nt->nt_keyixmap[keyix] == ni) { 1781178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1782178354Ssam IEEE80211_MSG_NODE, 1783148863Ssam "%s: %p<%s> clear key map entry", __func__, 1784148863Ssam ni, ether_sprintf(ni->ni_macaddr)); 1785148863Ssam nt->nt_keyixmap[keyix] = NULL; 1786148863Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1787148863Ssam _ieee80211_free_node(ni); 1788148863Ssam } 1789148863Ssam } 1790148863Ssam IEEE80211_NODE_UNLOCK(nt); 1791148863Ssam } else { 1792148863Ssam if (ieee80211_node_dectestref(ni)) 1793138568Ssam _ieee80211_free_node(ni); 1794116742Ssam } 1795116742Ssam} 1796116742Ssam 1797138568Ssam/* 1798148863Ssam * Reclaim a unicast key and clear any key cache state. 1799148863Ssam */ 1800148863Ssamint 1801148863Ssamieee80211_node_delucastkey(struct ieee80211_node *ni) 1802148863Ssam{ 1803179641Ssam struct ieee80211com *ic = ni->ni_ic; 1804179641Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1805148863Ssam struct ieee80211_node *nikey; 1806148863Ssam ieee80211_keyix keyix; 1807148863Ssam int isowned, status; 1808148863Ssam 1809148863Ssam /* 1810148863Ssam * NB: We must beware of LOR here; deleting the key 1811148863Ssam * can cause the crypto layer to block traffic updates 1812148863Ssam * which can generate a LOR against the node table lock; 1813148863Ssam * grab it here and stash the key index for our use below. 1814148863Ssam * 1815148863Ssam * Must also beware of recursion on the node table lock. 1816148863Ssam * When called from node_cleanup we may already have 1817148863Ssam * the node table lock held. Unfortunately there's no 1818148863Ssam * way to separate out this path so we must do this 1819148863Ssam * conditionally. 1820148863Ssam */ 1821148863Ssam isowned = IEEE80211_NODE_IS_LOCKED(nt); 1822148863Ssam if (!isowned) 1823148863Ssam IEEE80211_NODE_LOCK(nt); 1824179641Ssam nikey = NULL; 1825179641Ssam status = 1; /* NB: success */ 1826186144Ssam if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) { 1827179641Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1828179641Ssam status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); 1829179641Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { 1830179641Ssam nikey = nt->nt_keyixmap[keyix]; 1831201758Smbr nt->nt_keyixmap[keyix] = NULL; 1832179641Ssam } 1833179641Ssam } 1834148863Ssam if (!isowned) 1835178354Ssam IEEE80211_NODE_UNLOCK(nt); 1836148863Ssam 1837148863Ssam if (nikey != NULL) { 1838148863Ssam KASSERT(nikey == ni, 1839148863Ssam ("key map out of sync, ni %p nikey %p", ni, nikey)); 1840179641Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1841148863Ssam "%s: delete key map entry %p<%s> refcnt %d\n", 1842148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1843148863Ssam ieee80211_node_refcnt(ni)-1); 1844148863Ssam ieee80211_free_node(ni); 1845148863Ssam } 1846148863Ssam return status; 1847148863Ssam} 1848148863Ssam 1849148863Ssam/* 1850138568Ssam * Reclaim a node. If this is the last reference count then 1851138568Ssam * do the normal free work. Otherwise remove it from the node 1852138568Ssam * table and mark it gone by clearing the back-reference. 1853138568Ssam */ 1854138568Ssamstatic void 1855138568Ssamnode_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 1856116742Ssam{ 1857148863Ssam ieee80211_keyix keyix; 1858138568Ssam 1859148863Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1860148863Ssam 1861178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1862140766Ssam "%s: remove %p<%s> from %s table, refcnt %d\n", 1863140766Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1864140766Ssam nt->nt_name, ieee80211_node_refcnt(ni)-1); 1865148863Ssam /* 1866148863Ssam * Clear any entry in the unicast key mapping table. 1867148863Ssam * We need to do it here so rx lookups don't find it 1868148863Ssam * in the mapping table even if it's not in the hash 1869148863Ssam * table. We cannot depend on the mapping table entry 1870148863Ssam * being cleared because the node may not be free'd. 1871148863Ssam */ 1872148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1873148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && 1874148863Ssam nt->nt_keyixmap[keyix] == ni) { 1875178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1876188494Ssam "%s: %p<%s> clear key map entry %u\n", 1877188494Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), keyix); 1878148863Ssam nt->nt_keyixmap[keyix] = NULL; 1879148863Ssam ieee80211_node_decref(ni); /* NB: don't need free */ 1880148863Ssam } 1881138568Ssam if (!ieee80211_node_dectestref(ni)) { 1882138568Ssam /* 1883138568Ssam * Other references are present, just remove the 1884138568Ssam * node from the table so it cannot be found. When 1885138568Ssam * the references are dropped storage will be 1886140753Ssam * reclaimed. 1887138568Ssam */ 1888138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1889138568Ssam LIST_REMOVE(ni, ni_hash); 1890138568Ssam ni->ni_table = NULL; /* clear reference */ 1891138568Ssam } else 1892138568Ssam _ieee80211_free_node(ni); 1893138568Ssam} 1894138568Ssam 1895178354Ssam/* 1896178354Ssam * Node table support. 1897178354Ssam */ 1898178354Ssam 1899178354Ssamstatic void 1900178354Ssamieee80211_node_table_init(struct ieee80211com *ic, 1901178354Ssam struct ieee80211_node_table *nt, 1902178354Ssam const char *name, int inact, int keyixmax) 1903178354Ssam{ 1904178354Ssam struct ifnet *ifp = ic->ic_ifp; 1905178354Ssam 1906178354Ssam nt->nt_ic = ic; 1907178354Ssam IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname); 1908178354Ssam IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname); 1909178354Ssam TAILQ_INIT(&nt->nt_node); 1910178354Ssam nt->nt_name = name; 1911178354Ssam nt->nt_scangen = 1; 1912178354Ssam nt->nt_inact_init = inact; 1913178354Ssam nt->nt_keyixmax = keyixmax; 1914178354Ssam if (nt->nt_keyixmax > 0) { 1915186302Ssam nt->nt_keyixmap = (struct ieee80211_node **) malloc( 1916184210Sdes keyixmax * sizeof(struct ieee80211_node *), 1917178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 1918178354Ssam if (nt->nt_keyixmap == NULL) 1919178354Ssam if_printf(ic->ic_ifp, 1920178354Ssam "Cannot allocate key index map with %u entries\n", 1921178354Ssam keyixmax); 1922178354Ssam } else 1923178354Ssam nt->nt_keyixmap = NULL; 1924178354Ssam} 1925178354Ssam 1926178354Ssamstatic void 1927178354Ssamieee80211_node_table_reset(struct ieee80211_node_table *nt, 1928178354Ssam struct ieee80211vap *match) 1929178354Ssam{ 1930178354Ssam struct ieee80211_node *ni, *next; 1931178354Ssam 1932178354Ssam IEEE80211_NODE_LOCK(nt); 1933178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { 1934178354Ssam if (match != NULL && ni->ni_vap != match) 1935178354Ssam continue; 1936178354Ssam /* XXX can this happen? if so need's work */ 1937138568Ssam if (ni->ni_associd != 0) { 1938178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1939178354Ssam 1940178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 1941178354Ssam vap->iv_auth->ia_node_leave(ni); 1942178354Ssam if (vap->iv_aid_bitmap != NULL) 1943178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1944138568Ssam } 1945178354Ssam ni->ni_wdsvap = NULL; /* clear reference */ 1946138568Ssam node_reclaim(nt, ni); 1947138568Ssam } 1948178354Ssam if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { 1949178354Ssam /* 1950178354Ssam * Make a separate pass to clear references to this vap 1951178354Ssam * held by DWDS entries. They will not be matched above 1952178354Ssam * because ni_vap will point to the ap vap but we still 1953178354Ssam * need to clear ni_wdsvap when the WDS vap is destroyed 1954178354Ssam * and/or reset. 1955178354Ssam */ 1956178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) 1957178354Ssam if (ni->ni_wdsvap == match) 1958178354Ssam ni->ni_wdsvap = NULL; 1959178354Ssam } 1960178354Ssam IEEE80211_NODE_UNLOCK(nt); 1961116742Ssam} 1962116742Ssam 1963178354Ssamstatic void 1964178354Ssamieee80211_node_table_cleanup(struct ieee80211_node_table *nt) 1965178354Ssam{ 1966178354Ssam ieee80211_node_table_reset(nt, NULL); 1967178354Ssam if (nt->nt_keyixmap != NULL) { 1968178354Ssam#ifdef DIAGNOSTIC 1969178354Ssam /* XXX verify all entries are NULL */ 1970178354Ssam int i; 1971178354Ssam for (i = 0; i < nt->nt_keyixmax; i++) 1972178354Ssam if (nt->nt_keyixmap[i] != NULL) 1973178354Ssam printf("%s: %s[%u] still active\n", __func__, 1974178354Ssam nt->nt_name, i); 1975178354Ssam#endif 1976186302Ssam free(nt->nt_keyixmap, M_80211_NODE); 1977178354Ssam nt->nt_keyixmap = NULL; 1978178354Ssam } 1979178354Ssam IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt); 1980178354Ssam IEEE80211_NODE_LOCK_DESTROY(nt); 1981178354Ssam} 1982178354Ssam 1983120483Ssam/* 1984138568Ssam * Timeout inactive stations and do related housekeeping. 1985138568Ssam * Note that we cannot hold the node lock while sending a 1986138568Ssam * frame as this would lead to a LOR. Instead we use a 1987138568Ssam * generation number to mark nodes that we've scanned and 1988138568Ssam * drop the lock and restart a scan if we have to time out 1989138568Ssam * a node. Since we are single-threaded by virtue of 1990120483Ssam * controlling the inactivity timer we can be sure this will 1991120483Ssam * process each node only once. 1992120483Ssam */ 1993138568Ssamstatic void 1994178354Ssamieee80211_timeout_stations(struct ieee80211com *ic) 1995116742Ssam{ 1996178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1997178354Ssam struct ieee80211vap *vap; 1998120483Ssam struct ieee80211_node *ni; 1999178354Ssam int gen = 0; 2000116742Ssam 2001178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 2002154532Ssam gen = ++nt->nt_scangen; 2003120483Ssamrestart: 2004138568Ssam IEEE80211_NODE_LOCK(nt); 2005138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2006120483Ssam if (ni->ni_scangen == gen) /* previously handled */ 2007120483Ssam continue; 2008120483Ssam ni->ni_scangen = gen; 2009138568Ssam /* 2010147788Ssam * Ignore entries for which have yet to receive an 2011147788Ssam * authentication frame. These are transient and 2012147788Ssam * will be reclaimed when the last reference to them 2013147788Ssam * goes away (when frame xmits complete). 2014147788Ssam */ 2015178354Ssam vap = ni->ni_vap; 2016178354Ssam /* 2017178354Ssam * Only process stations when in RUN state. This 2018178354Ssam * insures, for example, that we don't timeout an 2019178354Ssam * inactive station during CAC. Note that CSA state 2020178354Ssam * is actually handled in ieee80211_node_timeout as 2021178354Ssam * it applies to more than timeout processing. 2022178354Ssam */ 2023178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 2024178354Ssam continue; 2025178354Ssam /* XXX can vap be NULL? */ 2026178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 2027178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 2028148323Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 2029147788Ssam continue; 2030147788Ssam /* 2031138568Ssam * Free fragment if not needed anymore 2032138568Ssam * (last fragment older than 1s). 2033178354Ssam * XXX doesn't belong here, move to node_age 2034138568Ssam */ 2035138568Ssam if (ni->ni_rxfrag[0] != NULL && 2036138568Ssam ticks > ni->ni_rxfragstamp + hz) { 2037138568Ssam m_freem(ni->ni_rxfrag[0]); 2038138568Ssam ni->ni_rxfrag[0] = NULL; 2039138568Ssam } 2040184277Ssam if (ni->ni_inact > 0) { 2041172062Ssam ni->ni_inact--; 2042184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 2043184277Ssam "%s: inact %u inact_reload %u nrates %u", 2044184277Ssam __func__, ni->ni_inact, ni->ni_inact_reload, 2045184277Ssam ni->ni_rates.rs_nrates); 2046184277Ssam } 2047140498Ssam /* 2048140498Ssam * Special case ourself; we may be idle for extended periods 2049140498Ssam * of time and regardless reclaiming our state is wrong. 2050178354Ssam * XXX run ic_node_age 2051140498Ssam */ 2052178354Ssam if (ni == vap->iv_bss) 2053140498Ssam continue; 2054178354Ssam if (ni->ni_associd != 0 || 2055178354Ssam (vap->iv_opmode == IEEE80211_M_IBSS || 2056178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO)) { 2057119150Ssam /* 2058178354Ssam * Age/drain resources held by the station. 2059138568Ssam */ 2060178354Ssam ic->ic_node_age(ni); 2061138568Ssam /* 2062138568Ssam * Probe the station before time it out. We 2063138568Ssam * send a null data frame which may not be 2064138568Ssam * universally supported by drivers (need it 2065138568Ssam * for ps-poll support so it should be...). 2066170530Ssam * 2067170530Ssam * XXX don't probe the station unless we've 2068170530Ssam * received a frame from them (and have 2069170530Ssam * some idea of the rates they are capable 2070170530Ssam * of); this will get fixed more properly 2071170530Ssam * soon with better handling of the rate set. 2072138568Ssam */ 2073178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 2074172062Ssam (0 < ni->ni_inact && 2075178354Ssam ni->ni_inact <= vap->iv_inact_probe) && 2076170530Ssam ni->ni_rates.rs_nrates != 0) { 2077178354Ssam IEEE80211_NOTE(vap, 2078148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, 2079148320Ssam ni, "%s", 2080148320Ssam "probe station due to inactivity"); 2081148582Ssam /* 2082148582Ssam * Grab a reference before unlocking the table 2083148582Ssam * so the node cannot be reclaimed before we 2084148582Ssam * send the frame. ieee80211_send_nulldata 2085148582Ssam * understands we've done this and reclaims the 2086148582Ssam * ref for us as needed. 2087148582Ssam */ 2088148582Ssam ieee80211_ref_node(ni); 2089138568Ssam IEEE80211_NODE_UNLOCK(nt); 2090148301Ssam ieee80211_send_nulldata(ni); 2091138568Ssam /* XXX stat? */ 2092138568Ssam goto restart; 2093138568Ssam } 2094138568Ssam } 2095178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 2096172062Ssam ni->ni_inact <= 0) { 2097178354Ssam IEEE80211_NOTE(vap, 2098148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, 2099148320Ssam "station timed out due to inactivity " 2100148320Ssam "(refcnt %u)", ieee80211_node_refcnt(ni)); 2101138568Ssam /* 2102138568Ssam * Send a deauthenticate frame and drop the station. 2103138568Ssam * This is somewhat complicated due to reference counts 2104138568Ssam * and locking. At this point a station will typically 2105138568Ssam * have a reference count of 1. ieee80211_node_leave 2106138568Ssam * will do a "free" of the node which will drop the 2107138568Ssam * reference count. But in the meantime a reference 2108138568Ssam * wil be held by the deauth frame. The actual reclaim 2109138568Ssam * of the node will happen either after the tx is 2110138568Ssam * completed or by ieee80211_node_leave. 2111120483Ssam * 2112138568Ssam * Separately we must drop the node lock before sending 2113170530Ssam * in case the driver takes a lock, as this can result 2114170530Ssam * in a LOR between the node lock and the driver lock. 2115119150Ssam */ 2116172229Ssam ieee80211_ref_node(ni); 2117138568Ssam IEEE80211_NODE_UNLOCK(nt); 2118138568Ssam if (ni->ni_associd != 0) { 2119178354Ssam IEEE80211_SEND_MGMT(ni, 2120138568Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 2121138568Ssam IEEE80211_REASON_AUTH_EXPIRE); 2122138568Ssam } 2123178354Ssam ieee80211_node_leave(ni); 2124172229Ssam ieee80211_free_node(ni); 2125178354Ssam vap->iv_stats.is_node_timeout++; 2126120483Ssam goto restart; 2127120483Ssam } 2128116742Ssam } 2129138568Ssam IEEE80211_NODE_UNLOCK(nt); 2130138568Ssam 2131178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2132170530Ssam} 2133138568Ssam 2134178354Ssam/* 2135178354Ssam * Aggressively reclaim resources. This should be used 2136178354Ssam * only in a critical situation to reclaim mbuf resources. 2137178354Ssam */ 2138170530Ssamvoid 2139178354Ssamieee80211_drain(struct ieee80211com *ic) 2140178354Ssam{ 2141178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 2142178354Ssam struct ieee80211vap *vap; 2143178354Ssam struct ieee80211_node *ni; 2144178354Ssam 2145178354Ssam IEEE80211_NODE_LOCK(nt); 2146178354Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2147178354Ssam /* 2148178354Ssam * Ignore entries for which have yet to receive an 2149178354Ssam * authentication frame. These are transient and 2150178354Ssam * will be reclaimed when the last reference to them 2151178354Ssam * goes away (when frame xmits complete). 2152178354Ssam */ 2153178354Ssam vap = ni->ni_vap; 2154178354Ssam /* 2155178354Ssam * Only process stations when in RUN state. This 2156178354Ssam * insures, for example, that we don't timeout an 2157178354Ssam * inactive station during CAC. Note that CSA state 2158178354Ssam * is actually handled in ieee80211_node_timeout as 2159178354Ssam * it applies to more than timeout processing. 2160178354Ssam */ 2161178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 2162178354Ssam continue; 2163178354Ssam /* XXX can vap be NULL? */ 2164178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 2165178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 2166178354Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 2167178354Ssam continue; 2168178354Ssam /* 2169178354Ssam * Free fragments. 2170178354Ssam * XXX doesn't belong here, move to node_drain 2171178354Ssam */ 2172178354Ssam if (ni->ni_rxfrag[0] != NULL) { 2173178354Ssam m_freem(ni->ni_rxfrag[0]); 2174178354Ssam ni->ni_rxfrag[0] = NULL; 2175178354Ssam } 2176178354Ssam /* 2177178354Ssam * Drain resources held by the station. 2178178354Ssam */ 2179178354Ssam ic->ic_node_drain(ni); 2180178354Ssam } 2181178354Ssam IEEE80211_NODE_UNLOCK(nt); 2182178354Ssam} 2183178354Ssam 2184178354Ssam/* 2185178354Ssam * Per-ieee80211com inactivity timer callback. 2186178354Ssam */ 2187178354Ssamvoid 2188170530Ssamieee80211_node_timeout(void *arg) 2189170530Ssam{ 2190170530Ssam struct ieee80211com *ic = arg; 2191170530Ssam 2192178354Ssam /* 2193178354Ssam * Defer timeout processing if a channel switch is pending. 2194178354Ssam * We typically need to be mute so not doing things that 2195178354Ssam * might generate frames is good to handle in one place. 2196178354Ssam * Supressing the station timeout processing may extend the 2197178354Ssam * lifetime of inactive stations (by not decrementing their 2198178354Ssam * idle counters) but this should be ok unless the CSA is 2199178354Ssam * active for an unusually long time. 2200178354Ssam */ 2201178354Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 2202178354Ssam ieee80211_scan_timeout(ic); 2203178354Ssam ieee80211_timeout_stations(ic); 2204195379Ssam ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT); 2205170530Ssam 2206178354Ssam IEEE80211_LOCK(ic); 2207178354Ssam ieee80211_erp_timeout(ic); 2208178354Ssam ieee80211_ht_timeout(ic); 2209178354Ssam IEEE80211_UNLOCK(ic); 2210178354Ssam } 2211170530Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 2212170530Ssam ieee80211_node_timeout, ic); 2213116742Ssam} 2214116742Ssam 2215239312Sadrian/* 2216239312Sadrian * Iterate over the node table and return an array of ref'ed nodes. 2217239312Sadrian * 2218239312Sadrian * This is separated out from calling the actual node function so that 2219239312Sadrian * no LORs will occur. 2220239312Sadrian * 2221239312Sadrian * If there are too many nodes (ie, the number of nodes doesn't fit 2222239312Sadrian * within 'max_aid' entries) then the node references will be freed 2223239312Sadrian * and an error will be returned. 2224239312Sadrian * 2225239312Sadrian * The responsibility of allocating and freeing "ni_arr" is up to 2226239312Sadrian * the caller. 2227239312Sadrian */ 2228239312Sadrianint 2229239312Sadrianieee80211_iterate_nt(struct ieee80211_node_table *nt, 2230239312Sadrian struct ieee80211_node **ni_arr, uint16_t max_aid) 2231116742Ssam{ 2232239312Sadrian u_int gen; 2233239312Sadrian int i, j, ret; 2234116742Ssam struct ieee80211_node *ni; 2235116742Ssam 2236178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 2237239312Sadrian IEEE80211_NODE_LOCK(nt); 2238239312Sadrian 2239154532Ssam gen = ++nt->nt_scangen; 2240239312Sadrian i = ret = 0; 2241239312Sadrian 2242239312Sadrian /* 2243239312Sadrian * We simply assume here that since the node 2244239312Sadrian * scan generation doesn't change (as 2245239312Sadrian * we are holding both the node table and 2246239312Sadrian * node table iteration locks), we can simply 2247239312Sadrian * assign it to the node here. 2248239312Sadrian */ 2249138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2250239312Sadrian if (i >= max_aid) { 2251239312Sadrian ret = E2BIG; 2252239312Sadrian if_printf(nt->nt_ic->ic_ifp, 2253239312Sadrian "Node array overflow: max=%u", max_aid); 2254239312Sadrian break; 2255138568Ssam } 2256239312Sadrian ni_arr[i] = ieee80211_ref_node(ni); 2257239312Sadrian ni_arr[i]->ni_scangen = gen; 2258239312Sadrian i++; 2259138568Ssam } 2260239312Sadrian 2261239312Sadrian /* 2262239312Sadrian * It's safe to unlock here. 2263239312Sadrian * 2264239312Sadrian * If we're successful, the list is returned. 2265239312Sadrian * If we're unsuccessful, the list is ignored 2266239312Sadrian * and we remove our references. 2267239312Sadrian * 2268239312Sadrian * This avoids any potential LOR with 2269239312Sadrian * ieee80211_free_node(). 2270239312Sadrian */ 2271138568Ssam IEEE80211_NODE_UNLOCK(nt); 2272239312Sadrian IEEE80211_NODE_ITERATE_UNLOCK(nt); 2273138568Ssam 2274239312Sadrian /* 2275239312Sadrian * If ret is non-zero, we hit some kind of error. 2276239312Sadrian * Rather than walking some nodes, we'll walk none 2277239312Sadrian * of them. 2278239312Sadrian */ 2279239312Sadrian if (ret) { 2280239312Sadrian for (j = 0; j < i; j++) { 2281239312Sadrian /* ieee80211_free_node() locks by itself */ 2282239312Sadrian ieee80211_free_node(ni_arr[j]); 2283239312Sadrian } 2284239312Sadrian } 2285239312Sadrian 2286239312Sadrian return (ret); 2287116742Ssam} 2288138568Ssam 2289239312Sadrian/* 2290239312Sadrian * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes() 2291239312Sadrian * reference in the source. 2292239312Sadrian * 2293239312Sadrian * Note that this fetches 'max_aid' from the first VAP, rather than finding 2294239312Sadrian * the largest max_aid from all VAPs. 2295239312Sadrian */ 2296138568Ssamvoid 2297239312Sadrianieee80211_iterate_nodes(struct ieee80211_node_table *nt, 2298239312Sadrian ieee80211_iter_func *f, void *arg) 2299239312Sadrian{ 2300239312Sadrian struct ieee80211_node **ni_arr; 2301239319Sadrian size_t size; 2302239312Sadrian int i; 2303239312Sadrian uint16_t max_aid; 2304240574Sadrian struct ieee80211vap *vap; 2305239312Sadrian 2306240574Sadrian /* Overdoing it default */ 2307240574Sadrian max_aid = IEEE80211_AID_MAX; 2308240574Sadrian 2309240574Sadrian /* Handle the case of there being no vaps just yet */ 2310240574Sadrian vap = TAILQ_FIRST(&nt->nt_ic->ic_vaps); 2311240574Sadrian if (vap != NULL) 2312240574Sadrian max_aid = vap->iv_max_aid; 2313240574Sadrian 2314239312Sadrian size = max_aid * sizeof(struct ieee80211_node *); 2315239312Sadrian ni_arr = (struct ieee80211_node **) malloc(size, M_80211_NODE, 2316239312Sadrian M_NOWAIT | M_ZERO); 2317239312Sadrian if (ni_arr == NULL) 2318239312Sadrian return; 2319239312Sadrian 2320239312Sadrian /* 2321239312Sadrian * If this fails, the node table won't have any 2322239312Sadrian * valid entries - ieee80211_iterate_nt() frees 2323239312Sadrian * the references to them. So don't try walking 2324239312Sadrian * the table; just skip to the end and free the 2325239312Sadrian * temporary memory. 2326239312Sadrian */ 2327239319Sadrian if (ieee80211_iterate_nt(nt, ni_arr, max_aid) != 0) 2328239312Sadrian goto done; 2329239312Sadrian 2330239312Sadrian for (i = 0; i < max_aid; i++) { 2331239312Sadrian if (ni_arr[i] == NULL) /* end of the list */ 2332239312Sadrian break; 2333239312Sadrian (*f)(arg, ni_arr[i]); 2334239312Sadrian /* ieee80211_free_node() locks by itself */ 2335239312Sadrian ieee80211_free_node(ni_arr[i]); 2336239312Sadrian } 2337239312Sadrian 2338239312Sadriandone: 2339239312Sadrian free(ni_arr, M_80211_NODE); 2340239312Sadrian} 2341239312Sadrian 2342239312Sadrianvoid 2343138568Ssamieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 2344138568Ssam{ 2345138568Ssam printf("0x%p: mac %s refcnt %d\n", ni, 2346138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); 2347138568Ssam printf("\tscangen %u authmode %u flags 0x%x\n", 2348138568Ssam ni->ni_scangen, ni->ni_authmode, ni->ni_flags); 2349138568Ssam printf("\tassocid 0x%x txpower %u vlan %u\n", 2350138568Ssam ni->ni_associd, ni->ni_txpower, ni->ni_vlan); 2351138568Ssam printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", 2352167439Ssam ni->ni_txseqs[IEEE80211_NONQOS_TID], 2353167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, 2354167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, 2355138568Ssam ni->ni_rxfragstamp); 2356192468Ssam printf("\trssi %d noise %d intval %u capinfo 0x%x\n", 2357192468Ssam node_getrssi(ni), ni->ni_noise, 2358170530Ssam ni->ni_intval, ni->ni_capinfo); 2359138568Ssam printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", 2360138568Ssam ether_sprintf(ni->ni_bssid), 2361138568Ssam ni->ni_esslen, ni->ni_essid, 2362138568Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags); 2363184277Ssam printf("\tinact %u inact_reload %u txrate %u\n", 2364184277Ssam ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate); 2365170530Ssam printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", 2366170530Ssam ni->ni_htcap, ni->ni_htparam, 2367170530Ssam ni->ni_htctlchan, ni->ni_ht2ndchan); 2368170530Ssam printf("\thtopmode %x htstbc %x chw %u\n", 2369170530Ssam ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw); 2370138568Ssam} 2371138568Ssam 2372138568Ssamvoid 2373138568Ssamieee80211_dump_nodes(struct ieee80211_node_table *nt) 2374138568Ssam{ 2375138568Ssam ieee80211_iterate_nodes(nt, 2376138568Ssam (ieee80211_iter_func *) ieee80211_dump_node, nt); 2377138568Ssam} 2378138568Ssam 2379179642Ssamstatic void 2380179642Ssamieee80211_notify_erp_locked(struct ieee80211com *ic) 2381172211Ssam{ 2382178354Ssam struct ieee80211vap *vap; 2383178354Ssam 2384178354Ssam IEEE80211_LOCK_ASSERT(ic); 2385178354Ssam 2386178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 2387178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) 2388178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); 2389172211Ssam} 2390172211Ssam 2391179642Ssamvoid 2392179642Ssamieee80211_notify_erp(struct ieee80211com *ic) 2393179642Ssam{ 2394179642Ssam IEEE80211_LOCK(ic); 2395179642Ssam ieee80211_notify_erp_locked(ic); 2396179642Ssam IEEE80211_UNLOCK(ic); 2397179642Ssam} 2398179642Ssam 2399138568Ssam/* 2400138568Ssam * Handle a station joining an 11g network. 2401138568Ssam */ 2402138568Ssamstatic void 2403178354Ssamieee80211_node_join_11g(struct ieee80211_node *ni) 2404138568Ssam{ 2405178354Ssam struct ieee80211com *ic = ni->ni_ic; 2406138568Ssam 2407173273Ssam IEEE80211_LOCK_ASSERT(ic); 2408173273Ssam 2409138568Ssam /* 2410138568Ssam * Station isn't capable of short slot time. Bump 2411138568Ssam * the count of long slot time stations and disable 2412138568Ssam * use of short slot time. Note that the actual switch 2413138568Ssam * over to long slot time use may not occur until the 2414138568Ssam * next beacon transmission (per sec. 7.3.1.4 of 11g). 2415138568Ssam */ 2416138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2417138568Ssam ic->ic_longslotsta++; 2418178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2419172211Ssam "station needs long slot time, count %d", 2420172211Ssam ic->ic_longslotsta); 2421138568Ssam /* XXX vap's w/ conflicting needs won't work */ 2422170530Ssam if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { 2423170530Ssam /* 2424170530Ssam * Don't force slot time when switched to turbo 2425170530Ssam * mode as non-ERP stations won't be present; this 2426170530Ssam * need only be done when on the normal G channel. 2427170530Ssam */ 2428170530Ssam ieee80211_set_shortslottime(ic, 0); 2429170530Ssam } 2430138568Ssam } 2431138568Ssam /* 2432138568Ssam * If the new station is not an ERP station 2433138568Ssam * then bump the counter and enable protection 2434138568Ssam * if configured. 2435138568Ssam */ 2436178354Ssam if (!ieee80211_iserp_rateset(&ni->ni_rates)) { 2437138568Ssam ic->ic_nonerpsta++; 2438178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2439172211Ssam "station is !ERP, %d non-ERP stations associated", 2440172211Ssam ic->ic_nonerpsta); 2441138568Ssam /* 2442138568Ssam * If station does not support short preamble 2443138568Ssam * then we must enable use of Barker preamble. 2444138568Ssam */ 2445138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { 2446178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2447172211Ssam "%s", "station needs long preamble"); 2448138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 2449138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 2450138568Ssam } 2451172211Ssam /* 2452178354Ssam * If protection is configured and this is the first 2453178354Ssam * indication we should use protection, enable it. 2454172211Ssam */ 2455172211Ssam if (ic->ic_protmode != IEEE80211_PROT_NONE && 2456172211Ssam ic->ic_nonerpsta == 1 && 2457172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2458178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2459172211Ssam "%s: enable use of protection\n", __func__); 2460172211Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 2461179642Ssam ieee80211_notify_erp_locked(ic); 2462172211Ssam } 2463138568Ssam } else 2464138568Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 2465138568Ssam} 2466138568Ssam 2467138568Ssamvoid 2468178354Ssamieee80211_node_join(struct ieee80211_node *ni, int resp) 2469138568Ssam{ 2470178354Ssam struct ieee80211com *ic = ni->ni_ic; 2471178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2472138568Ssam int newassoc; 2473138568Ssam 2474138568Ssam if (ni->ni_associd == 0) { 2475170530Ssam uint16_t aid; 2476138568Ssam 2477178354Ssam KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); 2478138568Ssam /* 2479138568Ssam * It would be good to search the bitmap 2480138568Ssam * more efficiently, but this will do for now. 2481138568Ssam */ 2482178354Ssam for (aid = 1; aid < vap->iv_max_aid; aid++) { 2483178354Ssam if (!IEEE80211_AID_ISSET(vap, aid)) 2484138568Ssam break; 2485138568Ssam } 2486178354Ssam if (aid >= vap->iv_max_aid) { 2487179640Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); 2488178354Ssam ieee80211_node_leave(ni); 2489138568Ssam return; 2490138568Ssam } 2491138568Ssam ni->ni_associd = aid | 0xc000; 2492173273Ssam ni->ni_jointime = time_uptime; 2493178354Ssam IEEE80211_LOCK(ic); 2494178354Ssam IEEE80211_AID_SET(vap, ni->ni_associd); 2495178354Ssam vap->iv_sta_assoc++; 2496138568Ssam ic->ic_sta_assoc++; 2497173273Ssam 2498173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2499173273Ssam ieee80211_ht_node_join(ni); 2500170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2501170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2502178354Ssam ieee80211_node_join_11g(ni); 2503173273Ssam IEEE80211_UNLOCK(ic); 2504173273Ssam 2505173273Ssam newassoc = 1; 2506138568Ssam } else 2507138568Ssam newassoc = 0; 2508138568Ssam 2509178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2510183256Ssam "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 2511139523Ssam IEEE80211_NODE_AID(ni), 2512139523Ssam ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", 2513139523Ssam ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", 2514139523Ssam ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "", 2515170530Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 2516170530Ssam ni->ni_flags & IEEE80211_NODE_HT ? 2517182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 2518173273Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 2519183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 2520183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 2521183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 2522178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 2523170530Ssam ", fast-frames" : "", 2524178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 2525170530Ssam ", turbo" : "" 2526139523Ssam ); 2527138568Ssam 2528193966Ssam ieee80211_node_setuptxparms(ni); 2529214894Sbschmidt ieee80211_ratectl_node_init(ni); 2530138568Ssam /* give driver a chance to setup state like ni_txrate */ 2531139524Ssam if (ic->ic_newassoc != NULL) 2532148307Ssam ic->ic_newassoc(ni, newassoc); 2533178354Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); 2534138568Ssam /* tell the authenticator about new station */ 2535178354Ssam if (vap->iv_auth->ia_node_join != NULL) 2536178354Ssam vap->iv_auth->ia_node_join(ni); 2537178354Ssam ieee80211_notify_node_join(ni, 2538173866Ssam resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 2539138568Ssam} 2540138568Ssam 2541172211Ssamstatic void 2542172211Ssamdisable_protection(struct ieee80211com *ic) 2543172211Ssam{ 2544172211Ssam KASSERT(ic->ic_nonerpsta == 0 && 2545172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, 2546172211Ssam ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta, 2547172211Ssam ic->ic_flags_ext)); 2548172211Ssam 2549172211Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 2550172211Ssam /* XXX verify mode? */ 2551172211Ssam if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { 2552172211Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 2553172211Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 2554172211Ssam } 2555179642Ssam ieee80211_notify_erp_locked(ic); 2556172211Ssam} 2557172211Ssam 2558138568Ssam/* 2559138568Ssam * Handle a station leaving an 11g network. 2560138568Ssam */ 2561138568Ssamstatic void 2562178354Ssamieee80211_node_leave_11g(struct ieee80211_node *ni) 2563138568Ssam{ 2564178354Ssam struct ieee80211com *ic = ni->ni_ic; 2565138568Ssam 2566173273Ssam IEEE80211_LOCK_ASSERT(ic); 2567173273Ssam 2568170530Ssam KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), 2569178354Ssam ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, 2570178354Ssam ic->ic_bsschan->ic_flags)); 2571138568Ssam 2572138568Ssam /* 2573138568Ssam * If a long slot station do the slot time bookkeeping. 2574138568Ssam */ 2575138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2576138568Ssam KASSERT(ic->ic_longslotsta > 0, 2577138568Ssam ("bogus long slot station count %d", ic->ic_longslotsta)); 2578138568Ssam ic->ic_longslotsta--; 2579178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2580172211Ssam "long slot time station leaves, count now %d", 2581172211Ssam ic->ic_longslotsta); 2582138568Ssam if (ic->ic_longslotsta == 0) { 2583138568Ssam /* 2584138568Ssam * Re-enable use of short slot time if supported 2585138568Ssam * and not operating in IBSS mode (per spec). 2586138568Ssam */ 2587138568Ssam if ((ic->ic_caps & IEEE80211_C_SHSLOT) && 2588138568Ssam ic->ic_opmode != IEEE80211_M_IBSS) { 2589178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 2590178354Ssam IEEE80211_MSG_ASSOC, 2591138568Ssam "%s: re-enable use of short slot time\n", 2592138568Ssam __func__); 2593138568Ssam ieee80211_set_shortslottime(ic, 1); 2594138568Ssam } 2595138568Ssam } 2596138568Ssam } 2597138568Ssam /* 2598138568Ssam * If a non-ERP station do the protection-related bookkeeping. 2599138568Ssam */ 2600138568Ssam if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { 2601138568Ssam KASSERT(ic->ic_nonerpsta > 0, 2602138568Ssam ("bogus non-ERP station count %d", ic->ic_nonerpsta)); 2603138568Ssam ic->ic_nonerpsta--; 2604178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2605172211Ssam "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta, 2606172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ? 2607172211Ssam " (non-ERP sta present)" : ""); 2608172211Ssam if (ic->ic_nonerpsta == 0 && 2609172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2610178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2611138568Ssam "%s: disable use of protection\n", __func__); 2612172211Ssam disable_protection(ic); 2613138568Ssam } 2614138568Ssam } 2615138568Ssam} 2616138568Ssam 2617138568Ssam/* 2618172211Ssam * Time out presence of an overlapping bss with non-ERP 2619172211Ssam * stations. When operating in hostap mode we listen for 2620172211Ssam * beacons from other stations and if we identify a non-ERP 2621172211Ssam * station is present we enable protection. To identify 2622172211Ssam * when all non-ERP stations are gone we time out this 2623172211Ssam * condition. 2624172211Ssam */ 2625172211Ssamstatic void 2626172211Ssamieee80211_erp_timeout(struct ieee80211com *ic) 2627172211Ssam{ 2628172211Ssam 2629172211Ssam IEEE80211_LOCK_ASSERT(ic); 2630172211Ssam 2631172211Ssam if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) && 2632172211Ssam time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { 2633178354Ssam#if 0 2634178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 2635178354Ssam "%s", "age out non-ERP sta present on channel"); 2636178354Ssam#endif 2637172211Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; 2638172211Ssam if (ic->ic_nonerpsta == 0) 2639172211Ssam disable_protection(ic); 2640172211Ssam } 2641172211Ssam} 2642172211Ssam 2643172211Ssam/* 2644138568Ssam * Handle bookkeeping for station deauthentication/disassociation 2645138568Ssam * when operating as an ap. 2646138568Ssam */ 2647138568Ssamvoid 2648178354Ssamieee80211_node_leave(struct ieee80211_node *ni) 2649138568Ssam{ 2650178354Ssam struct ieee80211com *ic = ni->ni_ic; 2651178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2652140499Ssam struct ieee80211_node_table *nt = ni->ni_table; 2653138568Ssam 2654178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2655172211Ssam "station with aid %d leaves", IEEE80211_NODE_AID(ni)); 2656138568Ssam 2657178354Ssam KASSERT(vap->iv_opmode != IEEE80211_M_STA, 2658178354Ssam ("unexpected operating mode %u", vap->iv_opmode)); 2659138568Ssam /* 2660138568Ssam * If node wasn't previously associated all 2661138568Ssam * we need to do is reclaim the reference. 2662138568Ssam */ 2663138568Ssam /* XXX ibss mode bypasses 11g and notification */ 2664138568Ssam if (ni->ni_associd == 0) 2665138568Ssam goto done; 2666138568Ssam /* 2667138568Ssam * Tell the authenticator the station is leaving. 2668138568Ssam * Note that we must do this before yanking the 2669138568Ssam * association id as the authenticator uses the 2670138568Ssam * associd to locate it's state block. 2671138568Ssam */ 2672178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 2673178354Ssam vap->iv_auth->ia_node_leave(ni); 2674173273Ssam 2675173273Ssam IEEE80211_LOCK(ic); 2676178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 2677138568Ssam ni->ni_associd = 0; 2678178354Ssam vap->iv_sta_assoc--; 2679138568Ssam ic->ic_sta_assoc--; 2680138568Ssam 2681173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2682173273Ssam ieee80211_ht_node_leave(ni); 2683170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2684170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2685178354Ssam ieee80211_node_leave_11g(ni); 2686173273Ssam IEEE80211_UNLOCK(ic); 2687138568Ssam /* 2688138568Ssam * Cleanup station state. In particular clear various 2689138568Ssam * state that might otherwise be reused if the node 2690138568Ssam * is reused before the reference count goes to zero 2691138568Ssam * (and memory is reclaimed). 2692138568Ssam */ 2693178354Ssam ieee80211_sta_leave(ni); 2694138568Ssamdone: 2695140499Ssam /* 2696140499Ssam * Remove the node from any table it's recorded in and 2697140499Ssam * drop the caller's reference. Removal from the table 2698140499Ssam * is important to insure the node is not reprocessed 2699140499Ssam * for inactivity. 2700140499Ssam */ 2701140499Ssam if (nt != NULL) { 2702140499Ssam IEEE80211_NODE_LOCK(nt); 2703140499Ssam node_reclaim(nt, ni); 2704140499Ssam IEEE80211_NODE_UNLOCK(nt); 2705140499Ssam } else 2706140499Ssam ieee80211_free_node(ni); 2707138568Ssam} 2708138568Ssam 2709178354Ssamstruct rssiinfo { 2710178354Ssam struct ieee80211vap *vap; 2711178354Ssam int rssi_samples; 2712178354Ssam uint32_t rssi_total; 2713178354Ssam}; 2714178354Ssam 2715178354Ssamstatic void 2716178354Ssamget_hostap_rssi(void *arg, struct ieee80211_node *ni) 2717178354Ssam{ 2718178354Ssam struct rssiinfo *info = arg; 2719178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2720178354Ssam int8_t rssi; 2721178354Ssam 2722178354Ssam if (info->vap != vap) 2723178354Ssam return; 2724178354Ssam /* only associated stations */ 2725178354Ssam if (ni->ni_associd == 0) 2726178354Ssam return; 2727178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2728178354Ssam if (rssi != 0) { 2729178354Ssam info->rssi_samples++; 2730178354Ssam info->rssi_total += rssi; 2731178354Ssam } 2732178354Ssam} 2733178354Ssam 2734178354Ssamstatic void 2735178354Ssamget_adhoc_rssi(void *arg, struct ieee80211_node *ni) 2736178354Ssam{ 2737178354Ssam struct rssiinfo *info = arg; 2738178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2739178354Ssam int8_t rssi; 2740178354Ssam 2741178354Ssam if (info->vap != vap) 2742178354Ssam return; 2743178354Ssam /* only neighbors */ 2744178354Ssam /* XXX check bssid */ 2745178354Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 2746178354Ssam return; 2747178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2748178354Ssam if (rssi != 0) { 2749178354Ssam info->rssi_samples++; 2750178354Ssam info->rssi_total += rssi; 2751178354Ssam } 2752178354Ssam} 2753178354Ssam 2754195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 2755195618Srpaulostatic void 2756195618Srpauloget_mesh_rssi(void *arg, struct ieee80211_node *ni) 2757195618Srpaulo{ 2758195618Srpaulo struct rssiinfo *info = arg; 2759195618Srpaulo struct ieee80211vap *vap = ni->ni_vap; 2760195618Srpaulo int8_t rssi; 2761195618Srpaulo 2762195618Srpaulo if (info->vap != vap) 2763195618Srpaulo return; 2764195618Srpaulo /* only neighbors that peered successfully */ 2765195618Srpaulo if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) 2766195618Srpaulo return; 2767195618Srpaulo rssi = vap->iv_ic->ic_node_getrssi(ni); 2768195618Srpaulo if (rssi != 0) { 2769195618Srpaulo info->rssi_samples++; 2770195618Srpaulo info->rssi_total += rssi; 2771195618Srpaulo } 2772195618Srpaulo} 2773195618Srpaulo#endif /* IEEE80211_SUPPORT_MESH */ 2774195618Srpaulo 2775170530Ssamint8_t 2776178354Ssamieee80211_getrssi(struct ieee80211vap *vap) 2777138568Ssam{ 2778138568Ssam#define NZ(x) ((x) == 0 ? 1 : (x)) 2779178354Ssam struct ieee80211com *ic = vap->iv_ic; 2780178354Ssam struct rssiinfo info; 2781138568Ssam 2782178354Ssam info.rssi_total = 0; 2783178354Ssam info.rssi_samples = 0; 2784178354Ssam info.vap = vap; 2785178354Ssam switch (vap->iv_opmode) { 2786138568Ssam case IEEE80211_M_IBSS: /* average of all ibss neighbors */ 2787138568Ssam case IEEE80211_M_AHDEMO: /* average of all neighbors */ 2788178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info); 2789178354Ssam break; 2790138568Ssam case IEEE80211_M_HOSTAP: /* average of all associated stations */ 2791178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info); 2792138568Ssam break; 2793195618Srpaulo#ifdef IEEE80211_SUPPORT_MESH 2794195618Srpaulo case IEEE80211_M_MBSS: /* average of all mesh neighbors */ 2795195618Srpaulo ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info); 2796195618Srpaulo break; 2797195618Srpaulo#endif 2798138568Ssam case IEEE80211_M_MONITOR: /* XXX */ 2799138568Ssam case IEEE80211_M_STA: /* use stats from associated ap */ 2800138568Ssam default: 2801178354Ssam if (vap->iv_bss != NULL) 2802178354Ssam info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); 2803178354Ssam info.rssi_samples = 1; 2804138568Ssam break; 2805138568Ssam } 2806178354Ssam return info.rssi_total / NZ(info.rssi_samples); 2807138568Ssam#undef NZ 2808138568Ssam} 2809138568Ssam 2810170530Ssamvoid 2811178354Ssamieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) 2812138568Ssam{ 2813138568Ssam 2814178354Ssam if (vap->iv_bss == NULL) /* NB: shouldn't happen */ 2815170530Ssam return; 2816178354Ssam vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); 2817170530Ssam /* for non-station mode return avg'd rssi accounting */ 2818178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 2819178354Ssam *rssi = ieee80211_getrssi(vap); 2820138568Ssam} 2821