ieee80211_node.c revision 186904
1116742Ssam/*- 2116904Ssam * Copyright (c) 2001 Atsushi Onoe 3186904Ssam * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 4116742Ssam * All rights reserved. 5116742Ssam * 6116742Ssam * Redistribution and use in source and binary forms, with or without 7116742Ssam * modification, are permitted provided that the following conditions 8116742Ssam * are met: 9116742Ssam * 1. Redistributions of source code must retain the above copyright 10116904Ssam * notice, this list of conditions and the following disclaimer. 11116904Ssam * 2. Redistributions in binary form must reproduce the above copyright 12116904Ssam * notice, this list of conditions and the following disclaimer in the 13116904Ssam * documentation and/or other materials provided with the distribution. 14116742Ssam * 15116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16116904Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17116904Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18116904Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19116904Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20116904Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21116904Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22116904Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23116904Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24116904Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25116742Ssam */ 26116742Ssam 27116742Ssam#include <sys/cdefs.h> 28116742Ssam__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_node.c 186904 2009-01-08 17:12:47Z sam $"); 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> 46186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 47186904Ssam#include <net80211/ieee80211_tdma.h> 48186904Ssam#endif 49178354Ssam#include <net80211/ieee80211_wds.h> 50116742Ssam 51116742Ssam#include <net/bpf.h> 52116742Ssam 53147221Ssam/* 54147221Ssam * Association id's are managed with a bit vector. 55147221Ssam */ 56178354Ssam#define IEEE80211_AID_SET(_vap, b) \ 57178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \ 58178354Ssam (1 << (IEEE80211_AID(b) % 32))) 59178354Ssam#define IEEE80211_AID_CLR(_vap, b) \ 60178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \ 61178354Ssam ~(1 << (IEEE80211_AID(b) % 32))) 62178354Ssam#define IEEE80211_AID_ISSET(_vap, b) \ 63178354Ssam ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32))) 64147221Ssam 65159139Sdds#ifdef IEEE80211_DEBUG_REFCNT 66159139Sdds#define REFCNT_LOC "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line 67159139Sdds#else 68159139Sdds#define REFCNT_LOC "%s %p<%s> refcnt %d\n", __func__ 69159139Sdds#endif 70159139Sdds 71170530Ssamstatic int ieee80211_sta_join1(struct ieee80211_node *); 72170530Ssam 73179643Ssamstatic struct ieee80211_node *node_alloc(struct ieee80211vap *, 74179643Ssam const uint8_t [IEEE80211_ADDR_LEN]); 75138568Ssamstatic void node_cleanup(struct ieee80211_node *); 76138568Ssamstatic void node_free(struct ieee80211_node *); 77178354Ssamstatic void node_age(struct ieee80211_node *); 78170530Ssamstatic int8_t node_getrssi(const struct ieee80211_node *); 79170530Ssamstatic void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *); 80178354Ssamstatic void node_getmimoinfo(const struct ieee80211_node *, 81178354Ssam struct ieee80211_mimo_info *); 82116742Ssam 83138568Ssamstatic void _ieee80211_free_node(struct ieee80211_node *); 84120104Ssam 85138568Ssamstatic void ieee80211_node_table_init(struct ieee80211com *ic, 86148863Ssam struct ieee80211_node_table *nt, const char *name, 87170530Ssam int inact, int keymaxix); 88178354Ssamstatic void ieee80211_node_table_reset(struct ieee80211_node_table *, 89178354Ssam struct ieee80211vap *); 90178354Ssamstatic void ieee80211_node_reclaim(struct ieee80211_node *); 91138568Ssamstatic void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt); 92172211Ssamstatic void ieee80211_erp_timeout(struct ieee80211com *); 93138568Ssam 94127876SsamMALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state"); 95178354SsamMALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie"); 96120481Ssam 97116742Ssamvoid 98138568Ssamieee80211_node_attach(struct ieee80211com *ic) 99116742Ssam{ 100178354Ssam ieee80211_node_table_init(ic, &ic->ic_sta, "station", 101178354Ssam IEEE80211_INACT_INIT, ic->ic_max_keyix); 102178354Ssam callout_init(&ic->ic_inact, CALLOUT_MPSAFE); 103178354Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 104178354Ssam ieee80211_node_timeout, ic); 105116742Ssam 106138568Ssam ic->ic_node_alloc = node_alloc; 107138568Ssam ic->ic_node_free = node_free; 108138568Ssam ic->ic_node_cleanup = node_cleanup; 109178354Ssam ic->ic_node_age = node_age; 110178354Ssam ic->ic_node_drain = node_age; /* NB: same as age */ 111138568Ssam ic->ic_node_getrssi = node_getrssi; 112170530Ssam ic->ic_node_getsignal = node_getsignal; 113178354Ssam ic->ic_node_getmimoinfo = node_getmimoinfo; 114138568Ssam 115178354Ssam /* 116178354Ssam * Set flags to be propagated to all vap's; 117178354Ssam * these define default behaviour/configuration. 118178354Ssam */ 119178354Ssam ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */ 120178354Ssam} 121138568Ssam 122178354Ssamvoid 123178354Ssamieee80211_node_detach(struct ieee80211com *ic) 124178354Ssam{ 125170530Ssam 126178354Ssam callout_drain(&ic->ic_inact); 127178354Ssam ieee80211_node_table_cleanup(&ic->ic_sta); 128178354Ssam} 129172062Ssam 130178354Ssamvoid 131178354Ssamieee80211_node_vattach(struct ieee80211vap *vap) 132178354Ssam{ 133178354Ssam /* NB: driver can override */ 134178354Ssam vap->iv_max_aid = IEEE80211_AID_DEF; 135178354Ssam 136178354Ssam /* default station inactivity timer setings */ 137178354Ssam vap->iv_inact_init = IEEE80211_INACT_INIT; 138178354Ssam vap->iv_inact_auth = IEEE80211_INACT_AUTH; 139178354Ssam vap->iv_inact_run = IEEE80211_INACT_RUN; 140178354Ssam vap->iv_inact_probe = IEEE80211_INACT_PROBE; 141184277Ssam 142184277Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT, 143184277Ssam "%s: init %u auth %u run %u probe %u\n", __func__, 144184277Ssam vap->iv_inact_init, vap->iv_inact_auth, 145184277Ssam vap->iv_inact_run, vap->iv_inact_probe); 146148863Ssam} 147148863Ssam 148148863Ssamvoid 149178354Ssamieee80211_node_latevattach(struct ieee80211vap *vap) 150148863Ssam{ 151178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) { 152178354Ssam /* XXX should we allow max aid to be zero? */ 153178354Ssam if (vap->iv_max_aid < IEEE80211_AID_MIN) { 154178354Ssam vap->iv_max_aid = IEEE80211_AID_MIN; 155178354Ssam if_printf(vap->iv_ifp, 156178354Ssam "WARNING: max aid too small, changed to %d\n", 157178354Ssam vap->iv_max_aid); 158178354Ssam } 159186302Ssam vap->iv_aid_bitmap = (uint32_t *) malloc( 160184210Sdes howmany(vap->iv_max_aid, 32) * sizeof(uint32_t), 161178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 162178354Ssam if (vap->iv_aid_bitmap == NULL) { 163178354Ssam /* XXX no way to recover */ 164178354Ssam printf("%s: no memory for AID bitmap, max aid %d!\n", 165178354Ssam __func__, vap->iv_max_aid); 166178354Ssam vap->iv_max_aid = 0; 167178354Ssam } 168138568Ssam } 169138568Ssam 170178354Ssam ieee80211_reset_bss(vap); 171118887Ssam 172178354Ssam vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode); 173116742Ssam} 174116742Ssam 175116742Ssamvoid 176178354Ssamieee80211_node_vdetach(struct ieee80211vap *vap) 177116742Ssam{ 178178354Ssam struct ieee80211com *ic = vap->iv_ic; 179116742Ssam 180178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 181178354Ssam if (vap->iv_bss != NULL) { 182178354Ssam ieee80211_free_node(vap->iv_bss); 183178354Ssam vap->iv_bss = NULL; 184138568Ssam } 185178354Ssam if (vap->iv_aid_bitmap != NULL) { 186186302Ssam free(vap->iv_aid_bitmap, M_80211_NODE); 187178354Ssam vap->iv_aid_bitmap = NULL; 188138568Ssam } 189116742Ssam} 190116742Ssam 191138568Ssam/* 192138568Ssam * Port authorize/unauthorize interfaces for use by an authenticator. 193138568Ssam */ 194138568Ssam 195138568Ssamvoid 196148302Ssamieee80211_node_authorize(struct ieee80211_node *ni) 197138568Ssam{ 198184277Ssam struct ieee80211vap *vap = ni->ni_vap; 199184277Ssam 200138568Ssam ni->ni_flags |= IEEE80211_NODE_AUTH; 201184277Ssam ni->ni_inact_reload = vap->iv_inact_run; 202172062Ssam ni->ni_inact = ni->ni_inact_reload; 203184277Ssam 204184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 205184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 206138568Ssam} 207138568Ssam 208138568Ssamvoid 209148302Ssamieee80211_node_unauthorize(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_auth; 215172062Ssam if (ni->ni_inact > ni->ni_inact_reload) 216172062Ssam ni->ni_inact = ni->ni_inact_reload; 217184277Ssam 218184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 219184277Ssam "%s: inact_reload %u inact %u", __func__, 220184277Ssam ni->ni_inact_reload, ni->ni_inact); 221138568Ssam} 222138568Ssam 223116742Ssam/* 224183251Ssam * Fix tx parameters for a node according to ``association state''. 225183251Ssam */ 226183251Ssamstatic void 227183251Ssamnode_setuptxparms(struct ieee80211_node *ni) 228183251Ssam{ 229183251Ssam struct ieee80211vap *vap = ni->ni_vap; 230183251Ssam 231183251Ssam if (ni->ni_flags & IEEE80211_NODE_HT) { 232183251Ssam if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) 233183251Ssam ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11NA]; 234183251Ssam else 235183251Ssam ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11NG]; 236183251Ssam } else { /* legacy rate handling */ 237183251Ssam if (IEEE80211_IS_CHAN_A(ni->ni_chan)) 238183251Ssam ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11A]; 239183251Ssam else if (ni->ni_flags & IEEE80211_NODE_ERP) 240183251Ssam ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11G]; 241183251Ssam else 242183251Ssam ni->ni_txparms = &vap->iv_txparms[IEEE80211_MODE_11B]; 243183251Ssam } 244183251Ssam} 245183251Ssam 246183251Ssam/* 247138568Ssam * Set/change the channel. The rate set is also updated as 248138568Ssam * to insure a consistent view by drivers. 249178354Ssam * XXX should be private but hostap needs it to deal with CSA 250138568Ssam */ 251178354Ssamvoid 252178354Ssamieee80211_node_set_chan(struct ieee80211_node *ni, 253178354Ssam struct ieee80211_channel *chan) 254138568Ssam{ 255178354Ssam struct ieee80211com *ic = ni->ni_ic; 256183251Ssam struct ieee80211vap *vap = ni->ni_vap; 257183251Ssam enum ieee80211_phymode mode; 258170530Ssam 259178354Ssam KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel")); 260178354Ssam 261138568Ssam ni->ni_chan = chan; 262183251Ssam mode = ieee80211_chan2mode(chan); 263170530Ssam if (IEEE80211_IS_CHAN_HT(chan)) { 264170530Ssam /* 265170530Ssam * XXX Gotta be careful here; the rate set returned by 266170530Ssam * ieee80211_get_suprates is actually any HT rate 267170530Ssam * set so blindly copying it will be bad. We must 268170530Ssam * install the legacy rate est in ni_rates and the 269170530Ssam * HT rate set in ni_htrates. 270170530Ssam */ 271170530Ssam ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); 272183251Ssam /* 273183251Ssam * Setup bss tx parameters based on operating mode. We 274183251Ssam * use legacy rates when operating in a mixed HT+non-HT bss 275183251Ssam * and non-ERP rates in 11g for mixed ERP+non-ERP bss. 276183251Ssam */ 277183251Ssam if (mode == IEEE80211_MODE_11NA && 278183251Ssam (vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0) 279183251Ssam mode = IEEE80211_MODE_11A; 280183251Ssam else if (mode == IEEE80211_MODE_11NG && 281183251Ssam (vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0) 282183251Ssam mode = IEEE80211_MODE_11G; 283183251Ssam if (mode == IEEE80211_MODE_11G && 284183251Ssam (vap->iv_flags & IEEE80211_F_PUREG) == 0) 285183251Ssam mode = IEEE80211_MODE_11B; 286170530Ssam } 287183251Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 288165569Ssam ni->ni_rates = *ieee80211_get_suprates(ic, chan); 289138568Ssam} 290138568Ssam 291141658Ssamstatic __inline void 292141658Ssamcopy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) 293141658Ssam{ 294141658Ssam /* propagate useful state */ 295141658Ssam nbss->ni_authmode = obss->ni_authmode; 296141658Ssam nbss->ni_txpower = obss->ni_txpower; 297141658Ssam nbss->ni_vlan = obss->ni_vlan; 298141658Ssam /* XXX statistics? */ 299178354Ssam /* XXX legacy WDS bssid? */ 300141658Ssam} 301141658Ssam 302116742Ssamvoid 303178354Ssamieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) 304116742Ssam{ 305178354Ssam struct ieee80211com *ic = vap->iv_ic; 306116742Ssam struct ieee80211_node *ni; 307116742Ssam 308178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 309178354Ssam "%s: creating ibss on channel %u\n", __func__, 310178354Ssam ieee80211_chan2ieee(ic, chan)); 311138568Ssam 312178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 313140753Ssam if (ni == NULL) { 314140753Ssam /* XXX recovery? */ 315138568Ssam return; 316138568Ssam } 317178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 318178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 319178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 320178354Ssam if (vap->iv_bss != NULL) 321178354Ssam copy_bss(ni, vap->iv_bss); 322148843Ssam ni->ni_intval = ic->ic_bintval; 323178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) 324116742Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 325116742Ssam if (ic->ic_phytype == IEEE80211_T_FH) { 326116742Ssam ni->ni_fhdwell = 200; /* XXX */ 327116742Ssam ni->ni_fhindex = 1; 328116742Ssam } 329178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 330178354Ssam vap->iv_flags |= IEEE80211_F_SIBSS; 331138568Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ 332178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 333178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 334167282Ssam else { 335167282Ssam get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN); 336167282Ssam /* clear group bit, add local bit */ 337167282Ssam ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; 338167282Ssam } 339178354Ssam } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 340178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 341178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 342153403Ssam else 343186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 344186904Ssam if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) 345186904Ssam#endif 346153403Ssam memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 347138568Ssam } 348138568Ssam /* 349138568Ssam * Fix the channel and related attributes. 350138568Ssam */ 351178354Ssam /* clear DFS CAC state on previous channel */ 352178354Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && 353178354Ssam ic->ic_bsschan->ic_freq != chan->ic_freq && 354178354Ssam IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) 355178354Ssam ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); 356170530Ssam ic->ic_bsschan = chan; 357178354Ssam ieee80211_node_set_chan(ni, chan); 358170530Ssam ic->ic_curmode = ieee80211_chan2mode(chan); 359138568Ssam /* 360178354Ssam * Do mode-specific setup. 361138568Ssam */ 362170530Ssam if (IEEE80211_IS_CHAN_FULL(chan)) { 363170530Ssam if (IEEE80211_IS_CHAN_ANYG(chan)) { 364170530Ssam /* 365178354Ssam * Use a mixed 11b/11g basic rate set. 366170530Ssam */ 367178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 368178354Ssam IEEE80211_MODE_11G); 369178354Ssam if (vap->iv_flags & IEEE80211_F_PUREG) { 370178354Ssam /* 371178354Ssam * Also mark OFDM rates basic so 11b 372178354Ssam * stations do not join (WiFi compliance). 373178354Ssam */ 374178354Ssam ieee80211_addbasicrates(&ni->ni_rates, 375178354Ssam IEEE80211_MODE_11A); 376178354Ssam } 377170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 378170530Ssam /* 379170530Ssam * Force pure 11b rate set. 380170530Ssam */ 381178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 382170530Ssam IEEE80211_MODE_11B); 383170530Ssam } 384170530Ssam } 385138568Ssam 386170530Ssam (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); 387116742Ssam} 388116742Ssam 389170530Ssam/* 390170530Ssam * Reset bss state on transition to the INIT state. 391170530Ssam * Clear any stations from the table (they have been 392170530Ssam * deauth'd) and reset the bss node (clears key, rate 393170530Ssam * etc. state). 394170530Ssam */ 395138568Ssamvoid 396178354Ssamieee80211_reset_bss(struct ieee80211vap *vap) 397138568Ssam{ 398178354Ssam struct ieee80211com *ic = vap->iv_ic; 399138568Ssam struct ieee80211_node *ni, *obss; 400138568Ssam 401178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 402178354Ssam /* XXX multi-bss: wrong */ 403170530Ssam ieee80211_reset_erp(ic); 404140753Ssam 405178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 406138568Ssam KASSERT(ni != NULL, ("unable to setup inital BSS node")); 407178354Ssam obss = vap->iv_bss; 408178354Ssam vap->iv_bss = ieee80211_ref_node(ni); 409141658Ssam if (obss != NULL) { 410141658Ssam copy_bss(ni, obss); 411148843Ssam ni->ni_intval = ic->ic_bintval; 412138568Ssam ieee80211_free_node(obss); 413178354Ssam } else 414178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 415138568Ssam} 416138568Ssam 417170530Ssamstatic int 418170530Ssammatch_ssid(const struct ieee80211_node *ni, 419170530Ssam int nssid, const struct ieee80211_scan_ssid ssids[]) 420170530Ssam{ 421170530Ssam int i; 422148432Ssam 423170530Ssam for (i = 0; i < nssid; i++) { 424170530Ssam if (ni->ni_esslen == ssids[i].len && 425170530Ssam memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) 426170530Ssam return 1; 427170530Ssam } 428170530Ssam return 0; 429170530Ssam} 430170530Ssam 431170530Ssam/* 432170530Ssam * Test a node for suitability/compatibility. 433170530Ssam */ 434127767Ssamstatic int 435178354Ssamcheck_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) 436127767Ssam{ 437178354Ssam struct ieee80211com *ic = ni->ni_ic; 438170530Ssam uint8_t rate; 439170530Ssam 440170530Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 441170530Ssam return 0; 442178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 443170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 444170530Ssam return 0; 445170530Ssam } else { 446170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 447170530Ssam return 0; 448170530Ssam } 449178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 450170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 451170530Ssam return 0; 452170530Ssam } else { 453170530Ssam /* XXX does this mean privacy is supported or required? */ 454170530Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 455170530Ssam return 0; 456170530Ssam } 457170530Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 458170530Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 459170530Ssam if (rate & IEEE80211_RATE_BASIC) 460170530Ssam return 0; 461178354Ssam if (vap->iv_des_nssid != 0 && 462178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 463170530Ssam return 0; 464178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 465178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 466170530Ssam return 0; 467170530Ssam return 1; 468170530Ssam} 469170530Ssam 470170530Ssam#ifdef IEEE80211_DEBUG 471170530Ssam/* 472170530Ssam * Display node suitability/compatibility. 473170530Ssam */ 474170530Ssamstatic void 475178354Ssamcheck_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) 476170530Ssam{ 477178354Ssam struct ieee80211com *ic = ni->ni_ic; 478170530Ssam uint8_t rate; 479127767Ssam int fail; 480127767Ssam 481127767Ssam fail = 0; 482127767Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 483127767Ssam fail |= 0x01; 484178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 485127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 486127767Ssam fail |= 0x02; 487127767Ssam } else { 488127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 489127767Ssam fail |= 0x02; 490127767Ssam } 491178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 492127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 493127767Ssam fail |= 0x04; 494127767Ssam } else { 495127767Ssam /* XXX does this mean privacy is supported or required? */ 496127767Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 497127767Ssam fail |= 0x04; 498127767Ssam } 499167442Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 500165887Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 501127767Ssam if (rate & IEEE80211_RATE_BASIC) 502127767Ssam fail |= 0x08; 503178354Ssam if (vap->iv_des_nssid != 0 && 504178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 505127767Ssam fail |= 0x10; 506178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 507178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 508127767Ssam fail |= 0x20; 509127767Ssam 510170530Ssam printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); 511170530Ssam printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); 512170530Ssam printf(" %3d%c", 513170530Ssam ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); 514170530Ssam printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 515170530Ssam fail & 0x08 ? '!' : ' '); 516170530Ssam printf(" %4s%c", 517170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : 518170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : 519170530Ssam "????", 520170530Ssam fail & 0x02 ? '!' : ' '); 521170530Ssam printf(" %3s%c ", 522170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", 523170530Ssam fail & 0x04 ? '!' : ' '); 524170530Ssam ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 525170530Ssam printf("%s\n", fail & 0x10 ? "!" : ""); 526138568Ssam} 527170530Ssam#endif /* IEEE80211_DEBUG */ 528138568Ssam 529138568Ssam/* 530138568Ssam * Handle 802.11 ad hoc network merge. The 531138568Ssam * convention, set by the Wireless Ethernet Compatibility Alliance 532138568Ssam * (WECA), is that an 802.11 station will change its BSSID to match 533138568Ssam * the "oldest" 802.11 ad hoc network, on the same channel, that 534138568Ssam * has the station's desired SSID. The "oldest" 802.11 network 535138568Ssam * sends beacons with the greatest TSF timestamp. 536138568Ssam * 537138568Ssam * The caller is assumed to validate TSF's before attempting a merge. 538138568Ssam * 539138568Ssam * Return !0 if the BSSID changed, 0 otherwise. 540138568Ssam */ 541138568Ssamint 542148306Ssamieee80211_ibss_merge(struct ieee80211_node *ni) 543138568Ssam{ 544178354Ssam struct ieee80211vap *vap = ni->ni_vap; 545178354Ssam#ifdef IEEE80211_DEBUG 546148306Ssam struct ieee80211com *ic = ni->ni_ic; 547178354Ssam#endif 548138568Ssam 549178354Ssam if (ni == vap->iv_bss || 550178354Ssam IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { 551138568Ssam /* unchanged, nothing to do */ 552138568Ssam return 0; 553138568Ssam } 554178354Ssam if (!check_bss(vap, ni)) { 555170530Ssam /* capabilities mismatch */ 556178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 557138568Ssam "%s: merge failed, capabilities mismatch\n", __func__); 558170530Ssam#ifdef IEEE80211_DEBUG 559178354Ssam if (ieee80211_msg_assoc(vap)) 560178354Ssam check_bss_debug(vap, ni); 561170530Ssam#endif 562178354Ssam vap->iv_stats.is_ibss_capmismatch++; 563138568Ssam return 0; 564138568Ssam } 565178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 566138568Ssam "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, 567138568Ssam ether_sprintf(ni->ni_bssid), 568138568Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 569138568Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 570138568Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "" 571138568Ssam ); 572170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 573138568Ssam} 574138568Ssam 575138568Ssam/* 576178354Ssam * Calculate HT channel promotion flags for all vaps. 577178354Ssam * This assumes ni_chan have been setup for each vap. 578173273Ssam */ 579178354Ssamstatic int 580178354Ssamgethtadjustflags(struct ieee80211com *ic) 581178354Ssam{ 582178354Ssam struct ieee80211vap *vap; 583178354Ssam int flags; 584178354Ssam 585178354Ssam flags = 0; 586178354Ssam /* XXX locking */ 587178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 588178354Ssam if (vap->iv_state < IEEE80211_S_RUN) 589178354Ssam continue; 590178354Ssam switch (vap->iv_opmode) { 591178354Ssam case IEEE80211_M_WDS: 592178354Ssam case IEEE80211_M_STA: 593178354Ssam case IEEE80211_M_AHDEMO: 594178354Ssam case IEEE80211_M_HOSTAP: 595178354Ssam case IEEE80211_M_IBSS: 596178354Ssam flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); 597178354Ssam break; 598178354Ssam default: 599178354Ssam break; 600178354Ssam } 601178354Ssam } 602178354Ssam return flags; 603178354Ssam} 604178354Ssam 605178354Ssam/* 606178354Ssam * Check if the current channel needs to change based on whether 607184303Ssam * any vap's are using HT20/HT40. This is used to sync the state 608184303Ssam * of ic_curchan after a channel width change on a running vap. 609178354Ssam */ 610173273Ssamvoid 611178354Ssamieee80211_sync_curchan(struct ieee80211com *ic) 612173273Ssam{ 613178354Ssam struct ieee80211_channel *c; 614178354Ssam 615178354Ssam c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); 616178354Ssam if (c != ic->ic_curchan) { 617178354Ssam ic->ic_curchan = c; 618178354Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 619178354Ssam ic->ic_set_channel(ic); 620178354Ssam } 621178354Ssam} 622178354Ssam 623178354Ssam/* 624178354Ssam * Change the current channel. The request channel may be 625178354Ssam * promoted if other vap's are operating with HT20/HT40. 626178354Ssam */ 627178354Ssamvoid 628178354Ssamieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 629178354Ssam{ 630178354Ssam if (ic->ic_htcaps & IEEE80211_HTC_HT) { 631178354Ssam int flags = gethtadjustflags(ic); 632178354Ssam /* 633178354Ssam * Check for channel promotion required to support the 634178354Ssam * set of running vap's. This assumes we are called 635178354Ssam * after ni_chan is setup for each vap. 636178354Ssam */ 637178354Ssam /* NB: this assumes IEEE80211_FEXT_USEHT40 > IEEE80211_FEXT_HT */ 638178354Ssam if (flags > ieee80211_htchanflags(c)) 639178354Ssam c = ieee80211_ht_adjust_channel(ic, c, flags); 640178354Ssam } 641178354Ssam ic->ic_bsschan = ic->ic_curchan = c; 642173273Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 643173273Ssam ic->ic_set_channel(ic); 644173273Ssam} 645173273Ssam 646173273Ssam/* 647138568Ssam * Join the specified IBSS/BSS network. The node is assumed to 648138568Ssam * be passed in with a held reference. 649138568Ssam */ 650170530Ssamstatic int 651170530Ssamieee80211_sta_join1(struct ieee80211_node *selbs) 652138568Ssam{ 653178354Ssam struct ieee80211vap *vap = selbs->ni_vap; 654170530Ssam struct ieee80211com *ic = selbs->ni_ic; 655138568Ssam struct ieee80211_node *obss; 656170530Ssam int canreassoc; 657138568Ssam 658138568Ssam /* 659138568Ssam * Committed to selbs, setup state. 660138568Ssam */ 661178354Ssam obss = vap->iv_bss; 662170530Ssam /* 663170530Ssam * Check if old+new node have the same address in which 664170530Ssam * case we can reassociate when operating in sta mode. 665170530Ssam */ 666170530Ssam canreassoc = (obss != NULL && 667178354Ssam vap->iv_state == IEEE80211_S_RUN && 668170530Ssam IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); 669178354Ssam vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */ 670153352Ssam if (obss != NULL) { 671153352Ssam copy_bss(selbs, obss); 672178354Ssam ieee80211_node_reclaim(obss); 673178354Ssam obss = NULL; /* NB: guard against later use */ 674153352Ssam } 675165887Ssam 676138568Ssam /* 677165887Ssam * Delete unusable rates; we've already checked 678165887Ssam * that the negotiated rate set is acceptable. 679165887Ssam */ 680178354Ssam ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, 681167442Ssam IEEE80211_F_DODEL | IEEE80211_F_JOIN); 682165887Ssam 683178354Ssam ieee80211_setcurchan(ic, selbs->ni_chan); 684165887Ssam /* 685138568Ssam * Set the erp state (mostly the slot time) to deal with 686138568Ssam * the auto-select case; this should be redundant if the 687138568Ssam * mode is locked. 688138568Ssam */ 689138568Ssam ieee80211_reset_erp(ic); 690178354Ssam ieee80211_wme_initparams(vap); 691140753Ssam 692178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 693170530Ssam if (canreassoc) { 694170530Ssam /* Reassociate */ 695178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 696170530Ssam } else { 697170530Ssam /* 698170530Ssam * Act as if we received a DEAUTH frame in case we 699170530Ssam * are invoked from the RUN state. This will cause 700170530Ssam * us to try to re-authenticate if we are operating 701170530Ssam * as a station. 702170530Ssam */ 703178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 704170530Ssam IEEE80211_FC0_SUBTYPE_DEAUTH); 705170530Ssam } 706170530Ssam } else 707178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 708138568Ssam return 1; 709116742Ssam} 710116742Ssam 711170530Ssamint 712184274Ssamieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, 713170530Ssam const struct ieee80211_scan_entry *se) 714170530Ssam{ 715178354Ssam struct ieee80211com *ic = vap->iv_ic; 716170530Ssam struct ieee80211_node *ni; 717170530Ssam 718178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr); 719170530Ssam if (ni == NULL) { 720170530Ssam /* XXX msg */ 721170530Ssam return 0; 722170530Ssam } 723170530Ssam /* 724170530Ssam * Expand scan state into node's format. 725170530Ssam * XXX may not need all this stuff 726170530Ssam */ 727170530Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); 728170530Ssam ni->ni_esslen = se->se_ssid[1]; 729170530Ssam memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); 730170530Ssam ni->ni_rstamp = se->se_rstamp; 731170530Ssam ni->ni_tstamp.tsf = se->se_tstamp.tsf; 732170530Ssam ni->ni_intval = se->se_intval; 733170530Ssam ni->ni_capinfo = se->se_capinfo; 734184274Ssam ni->ni_chan = chan; 735170530Ssam ni->ni_timoff = se->se_timoff; 736170530Ssam ni->ni_fhdwell = se->se_fhdwell; 737170530Ssam ni->ni_fhindex = se->se_fhindex; 738170530Ssam ni->ni_erp = se->se_erp; 739178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); 740170530Ssam ni->ni_noise = se->se_noise; 741186870Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 742186870Ssam /* NB: only infrastructure mode requires an associd */ 743186870Ssam ni->ni_flags |= IEEE80211_NODE_ASSOCID; 744186870Ssam } 745178354Ssam 746178354Ssam if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { 747178354Ssam ieee80211_ies_expand(&ni->ni_ies); 748178354Ssam if (ni->ni_ies.ath_ie != NULL) 749178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 750178354Ssam if (ni->ni_ies.htcap_ie != NULL) 751178354Ssam ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); 752178354Ssam if (ni->ni_ies.htinfo_ie != NULL) 753178354Ssam ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); 754186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 755186904Ssam if (ni->ni_ies.tdma_ie != NULL) 756186904Ssam ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); 757186904Ssam#endif 758173864Ssam } 759170530Ssam 760178354Ssam vap->iv_dtim_period = se->se_dtimperiod; 761178354Ssam vap->iv_dtim_count = 0; 762170530Ssam 763170530Ssam /* NB: must be after ni_chan is setup */ 764170530Ssam ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, 765170530Ssam IEEE80211_F_DOSORT); 766184279Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 767184279Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 768184279Ssam node_setuptxparms(ni); 769170530Ssam 770170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 771170530Ssam} 772170530Ssam 773138568Ssam/* 774138568Ssam * Leave the specified IBSS/BSS network. The node is assumed to 775138568Ssam * be passed in with a held reference. 776138568Ssam */ 777138568Ssamvoid 778178354Ssamieee80211_sta_leave(struct ieee80211_node *ni) 779138568Ssam{ 780178354Ssam struct ieee80211com *ic = ni->ni_ic; 781178354Ssam 782138568Ssam ic->ic_node_cleanup(ni); 783178354Ssam ieee80211_notify_node_leave(ni); 784138568Ssam} 785138568Ssam 786178354Ssam/* 787178354Ssam * Send a deauthenticate frame and drop the station. 788178354Ssam */ 789178354Ssamvoid 790178354Ssamieee80211_node_deauth(struct ieee80211_node *ni, int reason) 791178354Ssam{ 792178354Ssam /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */ 793178354Ssam ieee80211_ref_node(ni); 794178354Ssam if (ni->ni_associd != 0) 795178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); 796178354Ssam ieee80211_node_leave(ni); 797178354Ssam ieee80211_free_node(ni); 798178354Ssam} 799178354Ssam 800116742Ssamstatic struct ieee80211_node * 801179643Ssamnode_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 802116742Ssam{ 803127768Ssam struct ieee80211_node *ni; 804138568Ssam 805186302Ssam ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node), 806127768Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 807127768Ssam return ni; 808116742Ssam} 809116742Ssam 810138568Ssam/* 811178354Ssam * Initialize an ie blob with the specified data. If previous 812178354Ssam * data exists re-use the data block. As a side effect we clear 813178354Ssam * all references to specific ie's; the caller is required to 814178354Ssam * recalculate them. 815178354Ssam */ 816178354Ssamint 817178354Ssamieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) 818178354Ssam{ 819178354Ssam /* NB: assumes data+len are the last fields */ 820178354Ssam memset(ies, 0, offsetof(struct ieee80211_ies, data)); 821178354Ssam if (ies->data != NULL && ies->len != len) { 822178354Ssam /* data size changed */ 823186302Ssam free(ies->data, M_80211_NODE_IE); 824178354Ssam ies->data = NULL; 825178354Ssam } 826178354Ssam if (ies->data == NULL) { 827186302Ssam ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT); 828178354Ssam if (ies->data == NULL) { 829178354Ssam ies->len = 0; 830178354Ssam /* NB: pointers have already been zero'd above */ 831178354Ssam return 0; 832178354Ssam } 833178354Ssam } 834178354Ssam memcpy(ies->data, data, len); 835178354Ssam ies->len = len; 836178354Ssam return 1; 837178354Ssam} 838178354Ssam 839178354Ssam/* 840178354Ssam * Reclaim storage for an ie blob. 841178354Ssam */ 842178354Ssamvoid 843178354Ssamieee80211_ies_cleanup(struct ieee80211_ies *ies) 844178354Ssam{ 845178354Ssam if (ies->data != NULL) 846186302Ssam free(ies->data, M_80211_NODE_IE); 847178354Ssam} 848178354Ssam 849178354Ssam/* 850178354Ssam * Expand an ie blob data contents and to fillin individual 851178354Ssam * ie pointers. The data blob is assumed to be well-formed; 852178354Ssam * we don't do any validity checking of ie lengths. 853178354Ssam */ 854178354Ssamvoid 855178354Ssamieee80211_ies_expand(struct ieee80211_ies *ies) 856178354Ssam{ 857178354Ssam uint8_t *ie; 858178354Ssam int ielen; 859178354Ssam 860178354Ssam ie = ies->data; 861178354Ssam ielen = ies->len; 862178354Ssam while (ielen > 0) { 863178354Ssam switch (ie[0]) { 864178354Ssam case IEEE80211_ELEMID_VENDOR: 865178354Ssam if (iswpaoui(ie)) 866178354Ssam ies->wpa_ie = ie; 867178354Ssam else if (iswmeoui(ie)) 868178354Ssam ies->wme_ie = ie; 869178354Ssam else if (isatherosoui(ie)) 870178354Ssam ies->ath_ie = ie; 871186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 872186904Ssam else if (istdmaoui(ie)) 873186904Ssam ies->tdma_ie = ie; 874186904Ssam#endif 875178354Ssam break; 876178354Ssam case IEEE80211_ELEMID_RSN: 877178354Ssam ies->rsn_ie = ie; 878178354Ssam break; 879178354Ssam case IEEE80211_ELEMID_HTCAP: 880178354Ssam ies->htcap_ie = ie; 881178354Ssam break; 882178354Ssam } 883178354Ssam ielen -= 2 + ie[1]; 884178354Ssam ie += 2 + ie[1]; 885178354Ssam } 886178354Ssam} 887178354Ssam 888178354Ssam/* 889138568Ssam * Reclaim any resources in a node and reset any critical 890138568Ssam * state. Typically nodes are free'd immediately after, 891138568Ssam * but in some cases the storage may be reused so we need 892138568Ssam * to insure consistent state (should probably fix that). 893138568Ssam */ 894116742Ssamstatic void 895138568Ssamnode_cleanup(struct ieee80211_node *ni) 896116742Ssam{ 897138568Ssam#define N(a) (sizeof(a)/sizeof(a[0])) 898178354Ssam struct ieee80211vap *vap = ni->ni_vap; 899170530Ssam int i; 900138568Ssam 901138568Ssam /* NB: preserve ni_table */ 902138568Ssam if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { 903178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 904178354Ssam vap->iv_ps_sta--; 905138568Ssam ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; 906178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, 907178354Ssam "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); 908138568Ssam } 909147788Ssam /* 910173273Ssam * Cleanup any HT-related state. 911173273Ssam */ 912173273Ssam if (ni->ni_flags & IEEE80211_NODE_HT) 913173273Ssam ieee80211_ht_node_cleanup(ni); 914173273Ssam /* 915147788Ssam * Clear AREF flag that marks the authorization refcnt bump 916147788Ssam * has happened. This is probably not needed as the node 917147788Ssam * should always be removed from the table so not found but 918147788Ssam * do it just in case. 919186099Ssam * Likewise clear the ASSOCID flag as these flags are intended 920186099Ssam * to be managed in tandem. 921147788Ssam */ 922186099Ssam ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); 923138568Ssam 924138568Ssam /* 925138568Ssam * Drain power save queue and, if needed, clear TIM. 926138568Ssam */ 927184288Ssam if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) 928178354Ssam vap->iv_set_tim(ni, 0); 929138568Ssam 930138568Ssam ni->ni_associd = 0; 931138568Ssam if (ni->ni_challenge != NULL) { 932186302Ssam free(ni->ni_challenge, M_80211_NODE); 933138568Ssam ni->ni_challenge = NULL; 934138568Ssam } 935138568Ssam /* 936138568Ssam * Preserve SSID, WPA, and WME ie's so the bss node is 937138568Ssam * reusable during a re-auth/re-assoc state transition. 938138568Ssam * If we remove these data they will not be recreated 939138568Ssam * because they come from a probe-response or beacon frame 940138568Ssam * which cannot be expected prior to the association-response. 941138568Ssam * This should not be an issue when operating in other modes 942138568Ssam * as stations leaving always go through a full state transition 943138568Ssam * which will rebuild this state. 944138568Ssam * 945138568Ssam * XXX does this leave us open to inheriting old state? 946138568Ssam */ 947138568Ssam for (i = 0; i < N(ni->ni_rxfrag); i++) 948138568Ssam if (ni->ni_rxfrag[i] != NULL) { 949138568Ssam m_freem(ni->ni_rxfrag[i]); 950138568Ssam ni->ni_rxfrag[i] = NULL; 951138568Ssam } 952148863Ssam /* 953148863Ssam * Must be careful here to remove any key map entry w/o a LOR. 954148863Ssam */ 955148863Ssam ieee80211_node_delucastkey(ni); 956138568Ssam#undef N 957116742Ssam} 958116742Ssam 959116742Ssamstatic void 960138568Ssamnode_free(struct ieee80211_node *ni) 961116742Ssam{ 962138568Ssam struct ieee80211com *ic = ni->ni_ic; 963138568Ssam 964138568Ssam ic->ic_node_cleanup(ni); 965178354Ssam ieee80211_ies_cleanup(&ni->ni_ies); 966184288Ssam ieee80211_psq_cleanup(&ni->ni_psq); 967178354Ssam IEEE80211_NODE_WDSQ_DESTROY(ni); 968186302Ssam free(ni, M_80211_NODE); 969116742Ssam} 970116742Ssam 971178354Ssamstatic void 972178354Ssamnode_age(struct ieee80211_node *ni) 973178354Ssam{ 974178354Ssam struct ieee80211vap *vap = ni->ni_vap; 975184303Ssam 976184303Ssam IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta); 977184303Ssam 978178354Ssam /* 979178354Ssam * Age frames on the power save queue. 980178354Ssam */ 981184288Ssam if (ieee80211_node_psq_age(ni) != 0 && 982184288Ssam ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) 983178354Ssam vap->iv_set_tim(ni, 0); 984178354Ssam /* 985178354Ssam * Age frames on the wds pending queue. 986178354Ssam */ 987178354Ssam if (IEEE80211_NODE_WDSQ_QLEN(ni) != 0) 988178354Ssam ieee80211_node_wdsq_age(ni); 989178354Ssam /* 990178354Ssam * Age out HT resources (e.g. frames on the 991178354Ssam * A-MPDU reorder queues). 992178354Ssam */ 993178354Ssam if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) 994178354Ssam ieee80211_ht_node_age(ni); 995178354Ssam} 996178354Ssam 997170530Ssamstatic int8_t 998138568Ssamnode_getrssi(const struct ieee80211_node *ni) 999120104Ssam{ 1000178354Ssam uint32_t avgrssi = ni->ni_avgrssi; 1001178354Ssam int32_t rssi; 1002178354Ssam 1003178354Ssam if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) 1004178354Ssam return 0; 1005178354Ssam rssi = IEEE80211_RSSI_GET(avgrssi); 1006178354Ssam return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; 1007120104Ssam} 1008120104Ssam 1009116742Ssamstatic void 1010170530Ssamnode_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) 1011170530Ssam{ 1012178354Ssam *rssi = node_getrssi(ni); 1013170530Ssam *noise = ni->ni_noise; 1014170530Ssam} 1015170530Ssam 1016170530Ssamstatic void 1017178354Ssamnode_getmimoinfo(const struct ieee80211_node *ni, 1018178354Ssam struct ieee80211_mimo_info *info) 1019116742Ssam{ 1020178354Ssam /* XXX zero data? */ 1021178354Ssam} 1022178354Ssam 1023178354Ssamstruct ieee80211_node * 1024178354Ssamieee80211_alloc_node(struct ieee80211_node_table *nt, 1025178354Ssam struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1026178354Ssam{ 1027138568Ssam struct ieee80211com *ic = nt->nt_ic; 1028178354Ssam struct ieee80211_node *ni; 1029116742Ssam int hash; 1030116742Ssam 1031179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1032178354Ssam if (ni == NULL) { 1033178354Ssam vap->iv_stats.is_rx_nodealloc++; 1034178354Ssam return NULL; 1035178354Ssam } 1036178354Ssam 1037178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1038140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1039138568Ssam ether_sprintf(macaddr), nt->nt_name); 1040138568Ssam 1041116742Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1042116742Ssam hash = IEEE80211_NODE_HASH(macaddr); 1043138568Ssam ieee80211_node_initref(ni); /* mark referenced */ 1044138568Ssam ni->ni_chan = IEEE80211_CHAN_ANYC; 1045138568Ssam ni->ni_authmode = IEEE80211_AUTH_OPEN; 1046138568Ssam ni->ni_txpower = ic->ic_txpowlimit; /* max power */ 1047183251Ssam ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 1048178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); 1049178354Ssam ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; 1050139528Ssam ni->ni_inact_reload = nt->nt_inact_init; 1051139528Ssam ni->ni_inact = ni->ni_inact_reload; 1052170530Ssam ni->ni_ath_defkeyix = 0x7fff; 1053184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1054178354Ssam IEEE80211_NODE_WDSQ_INIT(ni, "unknown"); 1055138568Ssam 1056138568Ssam IEEE80211_NODE_LOCK(nt); 1057138568Ssam TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); 1058138568Ssam LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); 1059138568Ssam ni->ni_table = nt; 1060178354Ssam ni->ni_vap = vap; 1061138568Ssam ni->ni_ic = ic; 1062138568Ssam IEEE80211_NODE_UNLOCK(nt); 1063116742Ssam 1064184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1065184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 1066184277Ssam 1067116742Ssam return ni; 1068116742Ssam} 1069116742Ssam 1070148777Ssam/* 1071148777Ssam * Craft a temporary node suitable for sending a management frame 1072148777Ssam * to the specified station. We craft only as much state as we 1073148777Ssam * need to do the work since the node will be immediately reclaimed 1074148777Ssam * once the send completes. 1075148777Ssam */ 1076116742Ssamstruct ieee80211_node * 1077178354Ssamieee80211_tmp_node(struct ieee80211vap *vap, 1078178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1079148777Ssam{ 1080178354Ssam struct ieee80211com *ic = vap->iv_ic; 1081148777Ssam struct ieee80211_node *ni; 1082148777Ssam 1083179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1084148777Ssam if (ni != NULL) { 1085183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1086183259Ssam 1087178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1088148777Ssam "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); 1089148777Ssam 1090178354Ssam ni->ni_table = NULL; /* NB: pedantic */ 1091178354Ssam ni->ni_ic = ic; /* NB: needed to set channel */ 1092178354Ssam ni->ni_vap = vap; 1093178354Ssam 1094148777Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1095183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1096148777Ssam ieee80211_node_initref(ni); /* mark referenced */ 1097148777Ssam /* NB: required by ieee80211_fix_rate */ 1098183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1099178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, 1100148777Ssam IEEE80211_KEYIX_NONE); 1101183259Ssam ni->ni_txpower = bss->ni_txpower; 1102148777Ssam /* XXX optimize away */ 1103184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1104178354Ssam IEEE80211_NODE_WDSQ_INIT(ni, "unknown"); 1105148777Ssam } else { 1106148777Ssam /* XXX msg */ 1107178354Ssam vap->iv_stats.is_rx_nodealloc++; 1108148777Ssam } 1109148777Ssam return ni; 1110148777Ssam} 1111148777Ssam 1112148777Ssamstruct ieee80211_node * 1113178354Ssamieee80211_dup_bss(struct ieee80211vap *vap, 1114178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1115116742Ssam{ 1116178354Ssam struct ieee80211com *ic = vap->iv_ic; 1117138568Ssam struct ieee80211_node *ni; 1118138568Ssam 1119178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr); 1120116742Ssam if (ni != NULL) { 1121183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1122127770Ssam /* 1123178354Ssam * Inherit from iv_bss. 1124127770Ssam */ 1125183259Ssam copy_bss(ni, bss); 1126183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1127183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1128178354Ssam } 1129116742Ssam return ni; 1130116742Ssam} 1131116742Ssam 1132178354Ssam/* 1133178354Ssam * Create a bss node for a legacy WDS vap. The far end does 1134178354Ssam * not associate so we just create create a new node and 1135178354Ssam * simulate an association. The caller is responsible for 1136178354Ssam * installing the node as the bss node and handling any further 1137178354Ssam * setup work like authorizing the port. 1138178354Ssam */ 1139178354Ssamstruct ieee80211_node * 1140178354Ssamieee80211_node_create_wds(struct ieee80211vap *vap, 1141178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) 1142178354Ssam{ 1143178354Ssam struct ieee80211com *ic = vap->iv_ic; 1144178354Ssam struct ieee80211_node *ni; 1145178354Ssam 1146178354Ssam /* XXX check if node already in sta table? */ 1147178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid); 1148178354Ssam if (ni != NULL) { 1149178354Ssam ni->ni_wdsvap = vap; 1150178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); 1151178354Ssam /* 1152178354Ssam * Inherit any manually configured settings. 1153178354Ssam */ 1154183259Ssam copy_bss(ni, vap->iv_bss); 1155178354Ssam ieee80211_node_set_chan(ni, chan); 1156178354Ssam /* NB: propagate ssid so available to WPA supplicant */ 1157178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 1158178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 1159178354Ssam /* NB: no associd for peer */ 1160178354Ssam /* 1161178354Ssam * There are no management frames to use to 1162178354Ssam * discover neighbor capabilities, so blindly 1163178354Ssam * propagate the local configuration. 1164178354Ssam */ 1165178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1166178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1167178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1168178354Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1169178354Ssam if ((ic->ic_htcaps & IEEE80211_HTC_HT) && 1170178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_HT)) { 1171178354Ssam /* 1172178354Ssam * Device is HT-capable and HT is enabled for 1173178354Ssam * the vap; setup HT operation. On return 1174178354Ssam * ni_chan will be adjusted to an HT channel. 1175178354Ssam */ 1176178354Ssam ieee80211_ht_wds_init(ni); 1177178354Ssam } else { 1178178354Ssam struct ieee80211_channel *c = ni->ni_chan; 1179178354Ssam /* 1180178354Ssam * Force a legacy channel to be used. 1181178354Ssam */ 1182178354Ssam c = ieee80211_find_channel(ic, 1183178354Ssam c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); 1184178354Ssam KASSERT(c != NULL, ("no legacy channel, %u/%x", 1185178354Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); 1186178354Ssam ni->ni_chan = c; 1187178354Ssam } 1188178354Ssam } 1189178354Ssam return ni; 1190178354Ssam} 1191178354Ssam 1192178354Ssamstruct ieee80211_node * 1193138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1194178354Ssamieee80211_find_node_locked_debug(struct ieee80211_node_table *nt, 1195178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1196138568Ssam#else 1197178354Ssamieee80211_find_node_locked(struct ieee80211_node_table *nt, 1198178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1199138568Ssam#endif 1200116742Ssam{ 1201116742Ssam struct ieee80211_node *ni; 1202116742Ssam int hash; 1203116742Ssam 1204138568Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1205127772Ssam 1206116742Ssam hash = IEEE80211_NODE_HASH(macaddr); 1207138568Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1208116742Ssam if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1209138568Ssam ieee80211_ref_node(ni); /* mark referenced */ 1210138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1211178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1212140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1213140766Ssam func, line, 1214140766Ssam ni, ether_sprintf(ni->ni_macaddr), 1215140766Ssam ieee80211_node_refcnt(ni)); 1216138568Ssam#endif 1217127772Ssam return ni; 1218116742Ssam } 1219116742Ssam } 1220127772Ssam return NULL; 1221127772Ssam} 1222178354Ssam 1223178354Ssamstruct ieee80211_node * 1224138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1225178354Ssamieee80211_find_node_debug(struct ieee80211_node_table *nt, 1226178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1227178354Ssam#else 1228178354Ssamieee80211_find_node(struct ieee80211_node_table *nt, 1229178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1230138568Ssam#endif 1231178354Ssam{ 1232178354Ssam struct ieee80211_node *ni; 1233127772Ssam 1234178354Ssam IEEE80211_NODE_LOCK(nt); 1235178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1236178354Ssam IEEE80211_NODE_UNLOCK(nt); 1237178354Ssam return ni; 1238178354Ssam} 1239178354Ssam 1240127772Ssamstruct ieee80211_node * 1241138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1242178354Ssamieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt, 1243178354Ssam const struct ieee80211vap *vap, 1244178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1245138568Ssam#else 1246178354Ssamieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, 1247178354Ssam const struct ieee80211vap *vap, 1248178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1249138568Ssam#endif 1250127772Ssam{ 1251127772Ssam struct ieee80211_node *ni; 1252178354Ssam int hash; 1253127772Ssam 1254178354Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1255178354Ssam 1256178354Ssam hash = IEEE80211_NODE_HASH(macaddr); 1257178354Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1258178354Ssam if (ni->ni_vap == vap && 1259178354Ssam IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1260178354Ssam ieee80211_ref_node(ni); /* mark referenced */ 1261178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1262178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1263178354Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1264178354Ssam func, line, 1265178354Ssam ni, ether_sprintf(ni->ni_macaddr), 1266178354Ssam ieee80211_node_refcnt(ni)); 1267178354Ssam#endif 1268178354Ssam return ni; 1269178354Ssam } 1270178354Ssam } 1271178354Ssam return NULL; 1272178354Ssam} 1273178354Ssam 1274178354Ssamstruct ieee80211_node * 1275178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1276178354Ssamieee80211_find_vap_node_debug(struct ieee80211_node_table *nt, 1277178354Ssam const struct ieee80211vap *vap, 1278178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1279178354Ssam#else 1280178354Ssamieee80211_find_vap_node(struct ieee80211_node_table *nt, 1281178354Ssam const struct ieee80211vap *vap, 1282178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1283178354Ssam#endif 1284178354Ssam{ 1285178354Ssam struct ieee80211_node *ni; 1286178354Ssam 1287138568Ssam IEEE80211_NODE_LOCK(nt); 1288178354Ssam ni = ieee80211_find_vap_node_locked(nt, vap, macaddr); 1289138568Ssam IEEE80211_NODE_UNLOCK(nt); 1290116742Ssam return ni; 1291116742Ssam} 1292116742Ssam 1293116742Ssam/* 1294138568Ssam * Fake up a node; this handles node discovery in adhoc mode. 1295138568Ssam * Note that for the driver's benefit we we treat this like 1296138568Ssam * an association so the driver has an opportunity to setup 1297138568Ssam * it's private state. 1298138568Ssam */ 1299138568Ssamstruct ieee80211_node * 1300178354Ssamieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, 1301170530Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1302138568Ssam{ 1303138568Ssam struct ieee80211_node *ni; 1304138568Ssam 1305178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1306153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); 1307178354Ssam ni = ieee80211_dup_bss(vap, macaddr); 1308138568Ssam if (ni != NULL) { 1309178354Ssam struct ieee80211com *ic = vap->iv_ic; 1310178354Ssam 1311138568Ssam /* XXX no rate negotiation; just dup */ 1312178354Ssam ni->ni_rates = vap->iv_bss->ni_rates; 1313178354Ssam if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 1314153404Ssam /* 1315170530Ssam * In adhoc demo mode there are no management 1316170530Ssam * frames to use to discover neighbor capabilities, 1317170530Ssam * so blindly propagate the local configuration 1318170530Ssam * so we can do interesting things (e.g. use 1319170530Ssam * WME to disable ACK's). 1320153404Ssam */ 1321178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1322153404Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1323178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1324170530Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1325153404Ssam } 1326183251Ssam node_setuptxparms(ni); 1327178354Ssam if (ic->ic_newassoc != NULL) 1328178354Ssam ic->ic_newassoc(ni, 1); 1329170530Ssam /* XXX not right for 802.1x/WPA */ 1330170530Ssam ieee80211_node_authorize(ni); 1331138568Ssam } 1332138568Ssam return ni; 1333138568Ssam} 1334138568Ssam 1335148936Ssamvoid 1336153073Ssamieee80211_init_neighbor(struct ieee80211_node *ni, 1337153073Ssam const struct ieee80211_frame *wh, 1338153073Ssam const struct ieee80211_scanparams *sp) 1339153073Ssam{ 1340153073Ssam ni->ni_esslen = sp->ssid[1]; 1341153073Ssam memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); 1342153073Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); 1343153073Ssam memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); 1344153073Ssam ni->ni_intval = sp->bintval; 1345153073Ssam ni->ni_capinfo = sp->capinfo; 1346153073Ssam ni->ni_chan = ni->ni_ic->ic_curchan; 1347153073Ssam ni->ni_fhdwell = sp->fhdwell; 1348153073Ssam ni->ni_fhindex = sp->fhindex; 1349153073Ssam ni->ni_erp = sp->erp; 1350153073Ssam ni->ni_timoff = sp->timoff; 1351153073Ssam 1352178354Ssam if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { 1353178354Ssam ieee80211_ies_expand(&ni->ni_ies); 1354186659Ssam if (ni->ni_ies.wme_ie != NULL) 1355186659Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1356186659Ssam else 1357186659Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1358178354Ssam if (ni->ni_ies.ath_ie != NULL) 1359178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 1360178354Ssam } 1361178354Ssam 1362153073Ssam /* NB: must be after ni_chan is setup */ 1363165887Ssam ieee80211_setup_rates(ni, sp->rates, sp->xrates, 1364165887Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1365165887Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1366153073Ssam} 1367153073Ssam 1368148936Ssam/* 1369148936Ssam * Do node discovery in adhoc mode on receipt of a beacon 1370148936Ssam * or probe response frame. Note that for the driver's 1371148936Ssam * benefit we we treat this like an association so the 1372148936Ssam * driver has an opportunity to setup it's private state. 1373148936Ssam */ 1374148936Ssamstruct ieee80211_node * 1375178354Ssamieee80211_add_neighbor(struct ieee80211vap *vap, 1376148936Ssam const struct ieee80211_frame *wh, 1377148936Ssam const struct ieee80211_scanparams *sp) 1378148936Ssam{ 1379148936Ssam struct ieee80211_node *ni; 1380148936Ssam 1381178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1382153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); 1383178354Ssam ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ 1384148936Ssam if (ni != NULL) { 1385178354Ssam struct ieee80211com *ic = vap->iv_ic; 1386178354Ssam 1387153073Ssam ieee80211_init_neighbor(ni, wh, sp); 1388183251Ssam node_setuptxparms(ni); 1389148936Ssam if (ic->ic_newassoc != NULL) 1390148936Ssam ic->ic_newassoc(ni, 1); 1391148936Ssam /* XXX not right for 802.1x/WPA */ 1392148936Ssam ieee80211_node_authorize(ni); 1393148936Ssam } 1394148936Ssam return ni; 1395148936Ssam} 1396148936Ssam 1397148863Ssam#define IS_CTL(wh) \ 1398148863Ssam ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) 1399148863Ssam#define IS_PSPOLL(wh) \ 1400148863Ssam ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL) 1401170530Ssam#define IS_BAR(wh) \ 1402170530Ssam ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_BAR) 1403179220Ssam#define IS_PROBEREQ(wh) \ 1404179220Ssam ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ 1405179220Ssam == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) 1406179220Ssam#define IS_BCAST_PROBEREQ(wh) \ 1407179220Ssam (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ 1408179220Ssam ((const struct ieee80211_frame *)(wh))->i_addr3)) 1409170530Ssam 1410179220Ssamstatic __inline struct ieee80211_node * 1411179220Ssam_find_rxnode(struct ieee80211_node_table *nt, 1412179220Ssam const struct ieee80211_frame_min *wh) 1413179220Ssam{ 1414179220Ssam /* XXX 4-address frames? */ 1415179220Ssam if (IS_CTL(wh) && !IS_PSPOLL(wh) && !IS_BAR(wh) /*&& !IS_RTS(ah)*/) 1416179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr1); 1417179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1418179220Ssam return NULL; /* spam bcast probe req to all vap's */ 1419179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr2); 1420179220Ssam} 1421179220Ssam 1422138568Ssam/* 1423138568Ssam * Locate the node for sender, track state, and then pass the 1424179220Ssam * (referenced) node up to the 802.11 layer for its use. Note 1425179220Ssam * we can return NULL if the sender is not in the table. 1426138568Ssam */ 1427138568Ssamstruct ieee80211_node * 1428138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1429138568Ssamieee80211_find_rxnode_debug(struct ieee80211com *ic, 1430138568Ssam const struct ieee80211_frame_min *wh, const char *func, int line) 1431138568Ssam#else 1432138568Ssamieee80211_find_rxnode(struct ieee80211com *ic, 1433138568Ssam const struct ieee80211_frame_min *wh) 1434138568Ssam#endif 1435138568Ssam{ 1436138568Ssam struct ieee80211_node_table *nt; 1437138568Ssam struct ieee80211_node *ni; 1438138568Ssam 1439170530Ssam nt = &ic->ic_sta; 1440138568Ssam IEEE80211_NODE_LOCK(nt); 1441179220Ssam ni = _find_rxnode(nt, wh); 1442138568Ssam IEEE80211_NODE_UNLOCK(nt); 1443138568Ssam 1444148863Ssam return ni; 1445148863Ssam} 1446148863Ssam 1447148863Ssam/* 1448148863Ssam * Like ieee80211_find_rxnode but use the supplied h/w 1449148863Ssam * key index as a hint to locate the node in the key 1450148863Ssam * mapping table. If an entry is present at the key 1451148863Ssam * index we return it; otherwise do a normal lookup and 1452148863Ssam * update the mapping table if the station has a unicast 1453148863Ssam * key assigned to it. 1454148863Ssam */ 1455148863Ssamstruct ieee80211_node * 1456148863Ssam#ifdef IEEE80211_DEBUG_REFCNT 1457148863Ssamieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic, 1458148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, 1459148863Ssam const char *func, int line) 1460148863Ssam#else 1461148863Ssamieee80211_find_rxnode_withkey(struct ieee80211com *ic, 1462148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix) 1463148863Ssam#endif 1464148863Ssam{ 1465148863Ssam struct ieee80211_node_table *nt; 1466148863Ssam struct ieee80211_node *ni; 1467148863Ssam 1468170530Ssam nt = &ic->ic_sta; 1469148863Ssam IEEE80211_NODE_LOCK(nt); 1470148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) 1471148863Ssam ni = nt->nt_keyixmap[keyix]; 1472148863Ssam else 1473148863Ssam ni = NULL; 1474148863Ssam if (ni == NULL) { 1475179220Ssam ni = _find_rxnode(nt, wh); 1476178354Ssam if (ni != NULL && nt->nt_keyixmap != NULL) { 1477148863Ssam /* 1478148863Ssam * If the station has a unicast key cache slot 1479148863Ssam * assigned update the key->node mapping table. 1480148863Ssam */ 1481148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1482148863Ssam /* XXX can keyixmap[keyix] != NULL? */ 1483148863Ssam if (keyix < nt->nt_keyixmax && 1484148863Ssam nt->nt_keyixmap[keyix] == NULL) { 1485178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1486178354Ssam IEEE80211_MSG_NODE, 1487148863Ssam "%s: add key map entry %p<%s> refcnt %d\n", 1488148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1489148863Ssam ieee80211_node_refcnt(ni)+1); 1490148863Ssam nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); 1491148863Ssam } 1492148863Ssam } 1493179220Ssam } else { 1494179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1495179220Ssam ni = NULL; /* spam bcast probe req to all vap's */ 1496179220Ssam else 1497179220Ssam ieee80211_ref_node(ni); 1498179220Ssam } 1499148863Ssam IEEE80211_NODE_UNLOCK(nt); 1500148863Ssam 1501148863Ssam return ni; 1502148863Ssam} 1503179220Ssam#undef IS_BCAST_PROBEREQ 1504179220Ssam#undef IS_PROBEREQ 1505170530Ssam#undef IS_BAR 1506138568Ssam#undef IS_PSPOLL 1507138568Ssam#undef IS_CTL 1508138568Ssam 1509138568Ssam/* 1510127772Ssam * Return a reference to the appropriate node for sending 1511127772Ssam * a data frame. This handles node discovery in adhoc networks. 1512127772Ssam */ 1513127772Ssamstruct ieee80211_node * 1514138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1515178354Ssamieee80211_find_txnode_debug(struct ieee80211vap *vap, 1516178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], 1517138568Ssam const char *func, int line) 1518138568Ssam#else 1519178354Ssamieee80211_find_txnode(struct ieee80211vap *vap, 1520178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1521138568Ssam#endif 1522127772Ssam{ 1523178354Ssam struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; 1524127772Ssam struct ieee80211_node *ni; 1525127772Ssam 1526127772Ssam /* 1527127772Ssam * The destination address should be in the node table 1528148863Ssam * unless this is a multicast/broadcast frame. We can 1529148863Ssam * also optimize station mode operation, all frames go 1530148863Ssam * to the bss node. 1531127772Ssam */ 1532127772Ssam /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ 1533138568Ssam IEEE80211_NODE_LOCK(nt); 1534178354Ssam if (vap->iv_opmode == IEEE80211_M_STA || 1535178354Ssam vap->iv_opmode == IEEE80211_M_WDS || 1536178354Ssam IEEE80211_IS_MULTICAST(macaddr)) 1537178354Ssam ni = ieee80211_ref_node(vap->iv_bss); 1538186099Ssam else 1539178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1540138568Ssam IEEE80211_NODE_UNLOCK(nt); 1541138568Ssam 1542138568Ssam if (ni == NULL) { 1543178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS || 1544178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO) { 1545140497Ssam /* 1546140497Ssam * In adhoc mode cons up a node for the destination. 1547140497Ssam * Note that we need an additional reference for the 1548178354Ssam * caller to be consistent with 1549178354Ssam * ieee80211_find_node_locked. 1550140497Ssam */ 1551178354Ssam ni = ieee80211_fakeup_adhoc_node(vap, macaddr); 1552140497Ssam if (ni != NULL) 1553140497Ssam (void) ieee80211_ref_node(ni); 1554140497Ssam } else { 1555178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, 1556178354Ssam "no node, discard frame (%s)", __func__); 1557178354Ssam vap->iv_stats.is_tx_nonode++; 1558127772Ssam } 1559127772Ssam } 1560127772Ssam return ni; 1561127772Ssam} 1562127772Ssam 1563116742Ssamstatic void 1564138568Ssam_ieee80211_free_node(struct ieee80211_node *ni) 1565116742Ssam{ 1566138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1567119150Ssam 1568179641Ssam /* 1569179641Ssam * NB: careful about referencing the vap as it may be 1570179641Ssam * gone if the last reference was held by a driver. 1571179641Ssam * We know the com will always be present so it's safe 1572179641Ssam * to use ni_ic below to reclaim resources. 1573179641Ssam */ 1574179641Ssam#if 0 1575178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1576140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1577140766Ssam ether_sprintf(ni->ni_macaddr), 1578138568Ssam nt != NULL ? nt->nt_name : "<gone>"); 1579179641Ssam#endif 1580179641Ssam if (ni->ni_associd != 0) { 1581179641Ssam struct ieee80211vap *vap = ni->ni_vap; 1582179641Ssam if (vap->iv_aid_bitmap != NULL) 1583179641Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1584179641Ssam } 1585138568Ssam if (nt != NULL) { 1586138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1587138568Ssam LIST_REMOVE(ni, ni_hash); 1588138568Ssam } 1589179641Ssam ni->ni_ic->ic_node_free(ni); 1590116742Ssam} 1591116742Ssam 1592116742Ssamvoid 1593138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1594138568Ssamieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line) 1595138568Ssam#else 1596138568Ssamieee80211_free_node(struct ieee80211_node *ni) 1597138568Ssam#endif 1598116742Ssam{ 1599138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1600119150Ssam 1601138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1602178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1603140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, 1604138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1605138568Ssam#endif 1606148863Ssam if (nt != NULL) { 1607148863Ssam IEEE80211_NODE_LOCK(nt); 1608148863Ssam if (ieee80211_node_dectestref(ni)) { 1609148863Ssam /* 1610148863Ssam * Last reference, reclaim state. 1611148863Ssam */ 1612138568Ssam _ieee80211_free_node(ni); 1613148863Ssam } else if (ieee80211_node_refcnt(ni) == 1 && 1614148863Ssam nt->nt_keyixmap != NULL) { 1615148863Ssam ieee80211_keyix keyix; 1616148863Ssam /* 1617148863Ssam * Check for a last reference in the key mapping table. 1618148863Ssam */ 1619148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1620148863Ssam if (keyix < nt->nt_keyixmax && 1621148863Ssam nt->nt_keyixmap[keyix] == ni) { 1622178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1623178354Ssam IEEE80211_MSG_NODE, 1624148863Ssam "%s: %p<%s> clear key map entry", __func__, 1625148863Ssam ni, ether_sprintf(ni->ni_macaddr)); 1626148863Ssam nt->nt_keyixmap[keyix] = NULL; 1627148863Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1628148863Ssam _ieee80211_free_node(ni); 1629148863Ssam } 1630148863Ssam } 1631148863Ssam IEEE80211_NODE_UNLOCK(nt); 1632148863Ssam } else { 1633148863Ssam if (ieee80211_node_dectestref(ni)) 1634138568Ssam _ieee80211_free_node(ni); 1635116742Ssam } 1636116742Ssam} 1637116742Ssam 1638138568Ssam/* 1639148863Ssam * Reclaim a unicast key and clear any key cache state. 1640148863Ssam */ 1641148863Ssamint 1642148863Ssamieee80211_node_delucastkey(struct ieee80211_node *ni) 1643148863Ssam{ 1644179641Ssam struct ieee80211com *ic = ni->ni_ic; 1645179641Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1646148863Ssam struct ieee80211_node *nikey; 1647148863Ssam ieee80211_keyix keyix; 1648148863Ssam int isowned, status; 1649148863Ssam 1650148863Ssam /* 1651148863Ssam * NB: We must beware of LOR here; deleting the key 1652148863Ssam * can cause the crypto layer to block traffic updates 1653148863Ssam * which can generate a LOR against the node table lock; 1654148863Ssam * grab it here and stash the key index for our use below. 1655148863Ssam * 1656148863Ssam * Must also beware of recursion on the node table lock. 1657148863Ssam * When called from node_cleanup we may already have 1658148863Ssam * the node table lock held. Unfortunately there's no 1659148863Ssam * way to separate out this path so we must do this 1660148863Ssam * conditionally. 1661148863Ssam */ 1662148863Ssam isowned = IEEE80211_NODE_IS_LOCKED(nt); 1663148863Ssam if (!isowned) 1664148863Ssam IEEE80211_NODE_LOCK(nt); 1665179641Ssam nikey = NULL; 1666179641Ssam status = 1; /* NB: success */ 1667186144Ssam if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) { 1668179641Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1669179641Ssam status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); 1670179641Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { 1671179641Ssam nikey = nt->nt_keyixmap[keyix]; 1672179641Ssam nt->nt_keyixmap[keyix] = NULL;; 1673179641Ssam } 1674179641Ssam } 1675148863Ssam if (!isowned) 1676178354Ssam IEEE80211_NODE_UNLOCK(nt); 1677148863Ssam 1678148863Ssam if (nikey != NULL) { 1679148863Ssam KASSERT(nikey == ni, 1680148863Ssam ("key map out of sync, ni %p nikey %p", ni, nikey)); 1681179641Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1682148863Ssam "%s: delete key map entry %p<%s> refcnt %d\n", 1683148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1684148863Ssam ieee80211_node_refcnt(ni)-1); 1685148863Ssam ieee80211_free_node(ni); 1686148863Ssam } 1687148863Ssam return status; 1688148863Ssam} 1689148863Ssam 1690148863Ssam/* 1691138568Ssam * Reclaim a node. If this is the last reference count then 1692138568Ssam * do the normal free work. Otherwise remove it from the node 1693138568Ssam * table and mark it gone by clearing the back-reference. 1694138568Ssam */ 1695138568Ssamstatic void 1696138568Ssamnode_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 1697116742Ssam{ 1698148863Ssam ieee80211_keyix keyix; 1699138568Ssam 1700148863Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1701148863Ssam 1702178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1703140766Ssam "%s: remove %p<%s> from %s table, refcnt %d\n", 1704140766Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1705140766Ssam nt->nt_name, ieee80211_node_refcnt(ni)-1); 1706148863Ssam /* 1707148863Ssam * Clear any entry in the unicast key mapping table. 1708148863Ssam * We need to do it here so rx lookups don't find it 1709148863Ssam * in the mapping table even if it's not in the hash 1710148863Ssam * table. We cannot depend on the mapping table entry 1711148863Ssam * being cleared because the node may not be free'd. 1712148863Ssam */ 1713148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1714148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && 1715148863Ssam nt->nt_keyixmap[keyix] == ni) { 1716178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1717148863Ssam "%s: %p<%s> clear key map entry\n", 1718148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr)); 1719148863Ssam nt->nt_keyixmap[keyix] = NULL; 1720148863Ssam ieee80211_node_decref(ni); /* NB: don't need free */ 1721148863Ssam } 1722138568Ssam if (!ieee80211_node_dectestref(ni)) { 1723138568Ssam /* 1724138568Ssam * Other references are present, just remove the 1725138568Ssam * node from the table so it cannot be found. When 1726138568Ssam * the references are dropped storage will be 1727140753Ssam * reclaimed. 1728138568Ssam */ 1729138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1730138568Ssam LIST_REMOVE(ni, ni_hash); 1731138568Ssam ni->ni_table = NULL; /* clear reference */ 1732138568Ssam } else 1733138568Ssam _ieee80211_free_node(ni); 1734138568Ssam} 1735138568Ssam 1736178354Ssam/* 1737178354Ssam * Reclaim a (bss) node. Decrement the refcnt and reclaim 1738178354Ssam * the node if the only other reference to it is in the sta 1739178354Ssam * table. This is effectively ieee80211_free_node followed 1740178354Ssam * by node_reclaim when the refcnt is 1 (after the free). 1741178354Ssam */ 1742138568Ssamstatic void 1743178354Ssamieee80211_node_reclaim(struct ieee80211_node *ni) 1744138568Ssam{ 1745178354Ssam struct ieee80211_node_table *nt = ni->ni_table; 1746116742Ssam 1747178354Ssam KASSERT(nt != NULL, ("reclaim node not in table")); 1748138568Ssam 1749178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1750178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1751178712Ssam "%s %p<%s> refcnt %d\n", __func__, ni, 1752178354Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1753178354Ssam#endif 1754178354Ssam IEEE80211_NODE_LOCK(nt); 1755178354Ssam if (ieee80211_node_dectestref(ni)) { 1756178354Ssam /* 1757178354Ssam * Last reference, reclaim state. 1758178354Ssam */ 1759178354Ssam _ieee80211_free_node(ni); 1760178354Ssam nt = NULL; 1761178354Ssam } else if (ieee80211_node_refcnt(ni) == 1 && 1762178354Ssam nt->nt_keyixmap != NULL) { 1763178354Ssam ieee80211_keyix keyix; 1764178354Ssam /* 1765178354Ssam * Check for a last reference in the key mapping table. 1766178354Ssam */ 1767178354Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1768178354Ssam if (keyix < nt->nt_keyixmax && 1769178354Ssam nt->nt_keyixmap[keyix] == ni) { 1770178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1771178354Ssam IEEE80211_MSG_NODE, 1772178354Ssam "%s: %p<%s> clear key map entry", __func__, 1773178354Ssam ni, ether_sprintf(ni->ni_macaddr)); 1774178354Ssam nt->nt_keyixmap[keyix] = NULL; 1775178354Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1776178354Ssam _ieee80211_free_node(ni); 1777178354Ssam nt = NULL; 1778178354Ssam } 1779178354Ssam } 1780178354Ssam if (nt != NULL && ieee80211_node_refcnt(ni) == 1) { 1781178354Ssam /* 1782178354Ssam * Last reference is in the sta table; complete 1783178354Ssam * the reclaim. This handles bss nodes being 1784178354Ssam * recycled: the node has two references, one for 1785178354Ssam * iv_bss and one for the table. After dropping 1786178354Ssam * the iv_bss ref above we need to reclaim the sta 1787178354Ssam * table reference. 1788178354Ssam */ 1789178354Ssam ieee80211_node_decref(ni); /* NB: be pendantic */ 1790178354Ssam _ieee80211_free_node(ni); 1791178354Ssam } 1792178354Ssam IEEE80211_NODE_UNLOCK(nt); 1793178354Ssam} 1794178354Ssam 1795178354Ssam/* 1796178354Ssam * Node table support. 1797178354Ssam */ 1798178354Ssam 1799178354Ssamstatic void 1800178354Ssamieee80211_node_table_init(struct ieee80211com *ic, 1801178354Ssam struct ieee80211_node_table *nt, 1802178354Ssam const char *name, int inact, int keyixmax) 1803178354Ssam{ 1804178354Ssam struct ifnet *ifp = ic->ic_ifp; 1805178354Ssam 1806178354Ssam nt->nt_ic = ic; 1807178354Ssam IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname); 1808178354Ssam IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname); 1809178354Ssam TAILQ_INIT(&nt->nt_node); 1810178354Ssam nt->nt_name = name; 1811178354Ssam nt->nt_scangen = 1; 1812178354Ssam nt->nt_inact_init = inact; 1813178354Ssam nt->nt_keyixmax = keyixmax; 1814178354Ssam if (nt->nt_keyixmax > 0) { 1815186302Ssam nt->nt_keyixmap = (struct ieee80211_node **) malloc( 1816184210Sdes keyixmax * sizeof(struct ieee80211_node *), 1817178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 1818178354Ssam if (nt->nt_keyixmap == NULL) 1819178354Ssam if_printf(ic->ic_ifp, 1820178354Ssam "Cannot allocate key index map with %u entries\n", 1821178354Ssam keyixmax); 1822178354Ssam } else 1823178354Ssam nt->nt_keyixmap = NULL; 1824178354Ssam} 1825178354Ssam 1826178354Ssamstatic void 1827178354Ssamieee80211_node_table_reset(struct ieee80211_node_table *nt, 1828178354Ssam struct ieee80211vap *match) 1829178354Ssam{ 1830178354Ssam struct ieee80211_node *ni, *next; 1831178354Ssam 1832178354Ssam IEEE80211_NODE_LOCK(nt); 1833178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { 1834178354Ssam if (match != NULL && ni->ni_vap != match) 1835178354Ssam continue; 1836178354Ssam /* XXX can this happen? if so need's work */ 1837138568Ssam if (ni->ni_associd != 0) { 1838178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1839178354Ssam 1840178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 1841178354Ssam vap->iv_auth->ia_node_leave(ni); 1842178354Ssam if (vap->iv_aid_bitmap != NULL) 1843178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1844138568Ssam } 1845178354Ssam ni->ni_wdsvap = NULL; /* clear reference */ 1846138568Ssam node_reclaim(nt, ni); 1847138568Ssam } 1848178354Ssam if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { 1849178354Ssam /* 1850178354Ssam * Make a separate pass to clear references to this vap 1851178354Ssam * held by DWDS entries. They will not be matched above 1852178354Ssam * because ni_vap will point to the ap vap but we still 1853178354Ssam * need to clear ni_wdsvap when the WDS vap is destroyed 1854178354Ssam * and/or reset. 1855178354Ssam */ 1856178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) 1857178354Ssam if (ni->ni_wdsvap == match) 1858178354Ssam ni->ni_wdsvap = NULL; 1859178354Ssam } 1860178354Ssam IEEE80211_NODE_UNLOCK(nt); 1861116742Ssam} 1862116742Ssam 1863178354Ssamstatic void 1864178354Ssamieee80211_node_table_cleanup(struct ieee80211_node_table *nt) 1865178354Ssam{ 1866178354Ssam ieee80211_node_table_reset(nt, NULL); 1867178354Ssam if (nt->nt_keyixmap != NULL) { 1868178354Ssam#ifdef DIAGNOSTIC 1869178354Ssam /* XXX verify all entries are NULL */ 1870178354Ssam int i; 1871178354Ssam for (i = 0; i < nt->nt_keyixmax; i++) 1872178354Ssam if (nt->nt_keyixmap[i] != NULL) 1873178354Ssam printf("%s: %s[%u] still active\n", __func__, 1874178354Ssam nt->nt_name, i); 1875178354Ssam#endif 1876186302Ssam free(nt->nt_keyixmap, M_80211_NODE); 1877178354Ssam nt->nt_keyixmap = NULL; 1878178354Ssam } 1879178354Ssam IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt); 1880178354Ssam IEEE80211_NODE_LOCK_DESTROY(nt); 1881178354Ssam} 1882178354Ssam 1883120483Ssam/* 1884138568Ssam * Timeout inactive stations and do related housekeeping. 1885138568Ssam * Note that we cannot hold the node lock while sending a 1886138568Ssam * frame as this would lead to a LOR. Instead we use a 1887138568Ssam * generation number to mark nodes that we've scanned and 1888138568Ssam * drop the lock and restart a scan if we have to time out 1889138568Ssam * a node. Since we are single-threaded by virtue of 1890120483Ssam * controlling the inactivity timer we can be sure this will 1891120483Ssam * process each node only once. 1892120483Ssam */ 1893138568Ssamstatic void 1894178354Ssamieee80211_timeout_stations(struct ieee80211com *ic) 1895116742Ssam{ 1896178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1897178354Ssam struct ieee80211vap *vap; 1898120483Ssam struct ieee80211_node *ni; 1899178354Ssam int gen = 0; 1900116742Ssam 1901178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 1902154532Ssam gen = ++nt->nt_scangen; 1903120483Ssamrestart: 1904138568Ssam IEEE80211_NODE_LOCK(nt); 1905138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 1906120483Ssam if (ni->ni_scangen == gen) /* previously handled */ 1907120483Ssam continue; 1908120483Ssam ni->ni_scangen = gen; 1909138568Ssam /* 1910147788Ssam * Ignore entries for which have yet to receive an 1911147788Ssam * authentication frame. These are transient and 1912147788Ssam * will be reclaimed when the last reference to them 1913147788Ssam * goes away (when frame xmits complete). 1914147788Ssam */ 1915178354Ssam vap = ni->ni_vap; 1916178354Ssam /* 1917178354Ssam * Only process stations when in RUN state. This 1918178354Ssam * insures, for example, that we don't timeout an 1919178354Ssam * inactive station during CAC. Note that CSA state 1920178354Ssam * is actually handled in ieee80211_node_timeout as 1921178354Ssam * it applies to more than timeout processing. 1922178354Ssam */ 1923178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 1924178354Ssam continue; 1925178354Ssam /* XXX can vap be NULL? */ 1926178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 1927178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 1928148323Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 1929147788Ssam continue; 1930147788Ssam /* 1931138568Ssam * Free fragment if not needed anymore 1932138568Ssam * (last fragment older than 1s). 1933178354Ssam * XXX doesn't belong here, move to node_age 1934138568Ssam */ 1935138568Ssam if (ni->ni_rxfrag[0] != NULL && 1936138568Ssam ticks > ni->ni_rxfragstamp + hz) { 1937138568Ssam m_freem(ni->ni_rxfrag[0]); 1938138568Ssam ni->ni_rxfrag[0] = NULL; 1939138568Ssam } 1940184277Ssam if (ni->ni_inact > 0) { 1941172062Ssam ni->ni_inact--; 1942184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1943184277Ssam "%s: inact %u inact_reload %u nrates %u", 1944184277Ssam __func__, ni->ni_inact, ni->ni_inact_reload, 1945184277Ssam ni->ni_rates.rs_nrates); 1946184277Ssam } 1947140498Ssam /* 1948140498Ssam * Special case ourself; we may be idle for extended periods 1949140498Ssam * of time and regardless reclaiming our state is wrong. 1950178354Ssam * XXX run ic_node_age 1951140498Ssam */ 1952178354Ssam if (ni == vap->iv_bss) 1953140498Ssam continue; 1954178354Ssam if (ni->ni_associd != 0 || 1955178354Ssam (vap->iv_opmode == IEEE80211_M_IBSS || 1956178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO)) { 1957119150Ssam /* 1958178354Ssam * Age/drain resources held by the station. 1959138568Ssam */ 1960178354Ssam ic->ic_node_age(ni); 1961138568Ssam /* 1962138568Ssam * Probe the station before time it out. We 1963138568Ssam * send a null data frame which may not be 1964138568Ssam * universally supported by drivers (need it 1965138568Ssam * for ps-poll support so it should be...). 1966170530Ssam * 1967170530Ssam * XXX don't probe the station unless we've 1968170530Ssam * received a frame from them (and have 1969170530Ssam * some idea of the rates they are capable 1970170530Ssam * of); this will get fixed more properly 1971170530Ssam * soon with better handling of the rate set. 1972138568Ssam */ 1973178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 1974172062Ssam (0 < ni->ni_inact && 1975178354Ssam ni->ni_inact <= vap->iv_inact_probe) && 1976170530Ssam ni->ni_rates.rs_nrates != 0) { 1977178354Ssam IEEE80211_NOTE(vap, 1978148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, 1979148320Ssam ni, "%s", 1980148320Ssam "probe station due to inactivity"); 1981148582Ssam /* 1982148582Ssam * Grab a reference before unlocking the table 1983148582Ssam * so the node cannot be reclaimed before we 1984148582Ssam * send the frame. ieee80211_send_nulldata 1985148582Ssam * understands we've done this and reclaims the 1986148582Ssam * ref for us as needed. 1987148582Ssam */ 1988148582Ssam ieee80211_ref_node(ni); 1989138568Ssam IEEE80211_NODE_UNLOCK(nt); 1990148301Ssam ieee80211_send_nulldata(ni); 1991138568Ssam /* XXX stat? */ 1992138568Ssam goto restart; 1993138568Ssam } 1994138568Ssam } 1995178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 1996172062Ssam ni->ni_inact <= 0) { 1997178354Ssam IEEE80211_NOTE(vap, 1998148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, 1999148320Ssam "station timed out due to inactivity " 2000148320Ssam "(refcnt %u)", ieee80211_node_refcnt(ni)); 2001138568Ssam /* 2002138568Ssam * Send a deauthenticate frame and drop the station. 2003138568Ssam * This is somewhat complicated due to reference counts 2004138568Ssam * and locking. At this point a station will typically 2005138568Ssam * have a reference count of 1. ieee80211_node_leave 2006138568Ssam * will do a "free" of the node which will drop the 2007138568Ssam * reference count. But in the meantime a reference 2008138568Ssam * wil be held by the deauth frame. The actual reclaim 2009138568Ssam * of the node will happen either after the tx is 2010138568Ssam * completed or by ieee80211_node_leave. 2011120483Ssam * 2012138568Ssam * Separately we must drop the node lock before sending 2013170530Ssam * in case the driver takes a lock, as this can result 2014170530Ssam * in a LOR between the node lock and the driver lock. 2015119150Ssam */ 2016172229Ssam ieee80211_ref_node(ni); 2017138568Ssam IEEE80211_NODE_UNLOCK(nt); 2018138568Ssam if (ni->ni_associd != 0) { 2019178354Ssam IEEE80211_SEND_MGMT(ni, 2020138568Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 2021138568Ssam IEEE80211_REASON_AUTH_EXPIRE); 2022138568Ssam } 2023178354Ssam ieee80211_node_leave(ni); 2024172229Ssam ieee80211_free_node(ni); 2025178354Ssam vap->iv_stats.is_node_timeout++; 2026120483Ssam goto restart; 2027120483Ssam } 2028116742Ssam } 2029138568Ssam IEEE80211_NODE_UNLOCK(nt); 2030138568Ssam 2031178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2032170530Ssam} 2033138568Ssam 2034178354Ssam/* 2035178354Ssam * Aggressively reclaim resources. This should be used 2036178354Ssam * only in a critical situation to reclaim mbuf resources. 2037178354Ssam */ 2038170530Ssamvoid 2039178354Ssamieee80211_drain(struct ieee80211com *ic) 2040178354Ssam{ 2041178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 2042178354Ssam struct ieee80211vap *vap; 2043178354Ssam struct ieee80211_node *ni; 2044178354Ssam 2045178354Ssam IEEE80211_NODE_LOCK(nt); 2046178354Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2047178354Ssam /* 2048178354Ssam * Ignore entries for which have yet to receive an 2049178354Ssam * authentication frame. These are transient and 2050178354Ssam * will be reclaimed when the last reference to them 2051178354Ssam * goes away (when frame xmits complete). 2052178354Ssam */ 2053178354Ssam vap = ni->ni_vap; 2054178354Ssam /* 2055178354Ssam * Only process stations when in RUN state. This 2056178354Ssam * insures, for example, that we don't timeout an 2057178354Ssam * inactive station during CAC. Note that CSA state 2058178354Ssam * is actually handled in ieee80211_node_timeout as 2059178354Ssam * it applies to more than timeout processing. 2060178354Ssam */ 2061178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 2062178354Ssam continue; 2063178354Ssam /* XXX can vap be NULL? */ 2064178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 2065178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 2066178354Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 2067178354Ssam continue; 2068178354Ssam /* 2069178354Ssam * Free fragments. 2070178354Ssam * XXX doesn't belong here, move to node_drain 2071178354Ssam */ 2072178354Ssam if (ni->ni_rxfrag[0] != NULL) { 2073178354Ssam m_freem(ni->ni_rxfrag[0]); 2074178354Ssam ni->ni_rxfrag[0] = NULL; 2075178354Ssam } 2076178354Ssam /* 2077178354Ssam * Drain resources held by the station. 2078178354Ssam */ 2079178354Ssam ic->ic_node_drain(ni); 2080178354Ssam } 2081178354Ssam IEEE80211_NODE_UNLOCK(nt); 2082178354Ssam} 2083178354Ssam 2084178354Ssam/* 2085178354Ssam * Per-ieee80211com inactivity timer callback. 2086178354Ssam */ 2087178354Ssamvoid 2088170530Ssamieee80211_node_timeout(void *arg) 2089170530Ssam{ 2090170530Ssam struct ieee80211com *ic = arg; 2091170530Ssam 2092178354Ssam /* 2093178354Ssam * Defer timeout processing if a channel switch is pending. 2094178354Ssam * We typically need to be mute so not doing things that 2095178354Ssam * might generate frames is good to handle in one place. 2096178354Ssam * Supressing the station timeout processing may extend the 2097178354Ssam * lifetime of inactive stations (by not decrementing their 2098178354Ssam * idle counters) but this should be ok unless the CSA is 2099178354Ssam * active for an unusually long time. 2100178354Ssam */ 2101178354Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 2102178354Ssam ieee80211_scan_timeout(ic); 2103178354Ssam ieee80211_timeout_stations(ic); 2104170530Ssam 2105178354Ssam IEEE80211_LOCK(ic); 2106178354Ssam ieee80211_erp_timeout(ic); 2107178354Ssam ieee80211_ht_timeout(ic); 2108178354Ssam IEEE80211_UNLOCK(ic); 2109178354Ssam } 2110170530Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 2111170530Ssam ieee80211_node_timeout, ic); 2112116742Ssam} 2113116742Ssam 2114116742Ssamvoid 2115178354Ssamieee80211_iterate_nodes(struct ieee80211_node_table *nt, 2116178354Ssam ieee80211_iter_func *f, void *arg) 2117116742Ssam{ 2118116742Ssam struct ieee80211_node *ni; 2119138568Ssam u_int gen; 2120116742Ssam 2121178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 2122154532Ssam gen = ++nt->nt_scangen; 2123138568Ssamrestart: 2124138568Ssam IEEE80211_NODE_LOCK(nt); 2125138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2126138568Ssam if (ni->ni_scangen != gen) { 2127138568Ssam ni->ni_scangen = gen; 2128138568Ssam (void) ieee80211_ref_node(ni); 2129138568Ssam IEEE80211_NODE_UNLOCK(nt); 2130138568Ssam (*f)(arg, ni); 2131138568Ssam ieee80211_free_node(ni); 2132138568Ssam goto restart; 2133138568Ssam } 2134138568Ssam } 2135138568Ssam IEEE80211_NODE_UNLOCK(nt); 2136138568Ssam 2137178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2138116742Ssam} 2139138568Ssam 2140138568Ssamvoid 2141138568Ssamieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 2142138568Ssam{ 2143138568Ssam printf("0x%p: mac %s refcnt %d\n", ni, 2144138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); 2145138568Ssam printf("\tscangen %u authmode %u flags 0x%x\n", 2146138568Ssam ni->ni_scangen, ni->ni_authmode, ni->ni_flags); 2147138568Ssam printf("\tassocid 0x%x txpower %u vlan %u\n", 2148138568Ssam ni->ni_associd, ni->ni_txpower, ni->ni_vlan); 2149138568Ssam printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", 2150167439Ssam ni->ni_txseqs[IEEE80211_NONQOS_TID], 2151167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, 2152167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, 2153138568Ssam ni->ni_rxfragstamp); 2154170530Ssam printf("\trstamp %u rssi %d noise %d intval %u capinfo 0x%x\n", 2155178354Ssam ni->ni_rstamp, node_getrssi(ni), ni->ni_noise, 2156170530Ssam ni->ni_intval, ni->ni_capinfo); 2157138568Ssam printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", 2158138568Ssam ether_sprintf(ni->ni_bssid), 2159138568Ssam ni->ni_esslen, ni->ni_essid, 2160138568Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags); 2161184277Ssam printf("\tinact %u inact_reload %u txrate %u\n", 2162184277Ssam ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate); 2163170530Ssam printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", 2164170530Ssam ni->ni_htcap, ni->ni_htparam, 2165170530Ssam ni->ni_htctlchan, ni->ni_ht2ndchan); 2166170530Ssam printf("\thtopmode %x htstbc %x chw %u\n", 2167170530Ssam ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw); 2168138568Ssam} 2169138568Ssam 2170138568Ssamvoid 2171138568Ssamieee80211_dump_nodes(struct ieee80211_node_table *nt) 2172138568Ssam{ 2173138568Ssam ieee80211_iterate_nodes(nt, 2174138568Ssam (ieee80211_iter_func *) ieee80211_dump_node, nt); 2175138568Ssam} 2176138568Ssam 2177179642Ssamstatic void 2178179642Ssamieee80211_notify_erp_locked(struct ieee80211com *ic) 2179172211Ssam{ 2180178354Ssam struct ieee80211vap *vap; 2181178354Ssam 2182178354Ssam IEEE80211_LOCK_ASSERT(ic); 2183178354Ssam 2184178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 2185178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) 2186178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); 2187172211Ssam} 2188172211Ssam 2189179642Ssamvoid 2190179642Ssamieee80211_notify_erp(struct ieee80211com *ic) 2191179642Ssam{ 2192179642Ssam IEEE80211_LOCK(ic); 2193179642Ssam ieee80211_notify_erp_locked(ic); 2194179642Ssam IEEE80211_UNLOCK(ic); 2195179642Ssam} 2196179642Ssam 2197138568Ssam/* 2198138568Ssam * Handle a station joining an 11g network. 2199138568Ssam */ 2200138568Ssamstatic void 2201178354Ssamieee80211_node_join_11g(struct ieee80211_node *ni) 2202138568Ssam{ 2203178354Ssam struct ieee80211com *ic = ni->ni_ic; 2204138568Ssam 2205173273Ssam IEEE80211_LOCK_ASSERT(ic); 2206173273Ssam 2207138568Ssam /* 2208138568Ssam * Station isn't capable of short slot time. Bump 2209138568Ssam * the count of long slot time stations and disable 2210138568Ssam * use of short slot time. Note that the actual switch 2211138568Ssam * over to long slot time use may not occur until the 2212138568Ssam * next beacon transmission (per sec. 7.3.1.4 of 11g). 2213138568Ssam */ 2214138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2215138568Ssam ic->ic_longslotsta++; 2216178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2217172211Ssam "station needs long slot time, count %d", 2218172211Ssam ic->ic_longslotsta); 2219138568Ssam /* XXX vap's w/ conflicting needs won't work */ 2220170530Ssam if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { 2221170530Ssam /* 2222170530Ssam * Don't force slot time when switched to turbo 2223170530Ssam * mode as non-ERP stations won't be present; this 2224170530Ssam * need only be done when on the normal G channel. 2225170530Ssam */ 2226170530Ssam ieee80211_set_shortslottime(ic, 0); 2227170530Ssam } 2228138568Ssam } 2229138568Ssam /* 2230138568Ssam * If the new station is not an ERP station 2231138568Ssam * then bump the counter and enable protection 2232138568Ssam * if configured. 2233138568Ssam */ 2234178354Ssam if (!ieee80211_iserp_rateset(&ni->ni_rates)) { 2235138568Ssam ic->ic_nonerpsta++; 2236178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2237172211Ssam "station is !ERP, %d non-ERP stations associated", 2238172211Ssam ic->ic_nonerpsta); 2239138568Ssam /* 2240138568Ssam * If station does not support short preamble 2241138568Ssam * then we must enable use of Barker preamble. 2242138568Ssam */ 2243138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { 2244178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2245172211Ssam "%s", "station needs long preamble"); 2246138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 2247138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 2248138568Ssam } 2249172211Ssam /* 2250178354Ssam * If protection is configured and this is the first 2251178354Ssam * indication we should use protection, enable it. 2252172211Ssam */ 2253172211Ssam if (ic->ic_protmode != IEEE80211_PROT_NONE && 2254172211Ssam ic->ic_nonerpsta == 1 && 2255172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2256178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2257172211Ssam "%s: enable use of protection\n", __func__); 2258172211Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 2259179642Ssam ieee80211_notify_erp_locked(ic); 2260172211Ssam } 2261138568Ssam } else 2262138568Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 2263138568Ssam} 2264138568Ssam 2265138568Ssamvoid 2266178354Ssamieee80211_node_join(struct ieee80211_node *ni, int resp) 2267138568Ssam{ 2268178354Ssam struct ieee80211com *ic = ni->ni_ic; 2269178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2270138568Ssam int newassoc; 2271138568Ssam 2272138568Ssam if (ni->ni_associd == 0) { 2273170530Ssam uint16_t aid; 2274138568Ssam 2275178354Ssam KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); 2276138568Ssam /* 2277138568Ssam * It would be good to search the bitmap 2278138568Ssam * more efficiently, but this will do for now. 2279138568Ssam */ 2280178354Ssam for (aid = 1; aid < vap->iv_max_aid; aid++) { 2281178354Ssam if (!IEEE80211_AID_ISSET(vap, aid)) 2282138568Ssam break; 2283138568Ssam } 2284178354Ssam if (aid >= vap->iv_max_aid) { 2285179640Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); 2286178354Ssam ieee80211_node_leave(ni); 2287138568Ssam return; 2288138568Ssam } 2289138568Ssam ni->ni_associd = aid | 0xc000; 2290173273Ssam ni->ni_jointime = time_uptime; 2291178354Ssam IEEE80211_LOCK(ic); 2292178354Ssam IEEE80211_AID_SET(vap, ni->ni_associd); 2293178354Ssam vap->iv_sta_assoc++; 2294138568Ssam ic->ic_sta_assoc++; 2295173273Ssam 2296173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2297173273Ssam ieee80211_ht_node_join(ni); 2298170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2299170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2300178354Ssam ieee80211_node_join_11g(ni); 2301173273Ssam IEEE80211_UNLOCK(ic); 2302173273Ssam 2303173273Ssam newassoc = 1; 2304138568Ssam } else 2305138568Ssam newassoc = 0; 2306138568Ssam 2307178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2308183256Ssam "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 2309139523Ssam IEEE80211_NODE_AID(ni), 2310139523Ssam ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", 2311139523Ssam ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", 2312139523Ssam ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "", 2313170530Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 2314170530Ssam ni->ni_flags & IEEE80211_NODE_HT ? 2315182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 2316173273Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 2317183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 2318183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 2319183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 2320178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 2321170530Ssam ", fast-frames" : "", 2322178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 2323170530Ssam ", turbo" : "" 2324139523Ssam ); 2325138568Ssam 2326183251Ssam node_setuptxparms(ni); 2327138568Ssam /* give driver a chance to setup state like ni_txrate */ 2328139524Ssam if (ic->ic_newassoc != NULL) 2329148307Ssam ic->ic_newassoc(ni, newassoc); 2330178354Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); 2331138568Ssam /* tell the authenticator about new station */ 2332178354Ssam if (vap->iv_auth->ia_node_join != NULL) 2333178354Ssam vap->iv_auth->ia_node_join(ni); 2334178354Ssam ieee80211_notify_node_join(ni, 2335173866Ssam resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 2336138568Ssam} 2337138568Ssam 2338172211Ssamstatic void 2339172211Ssamdisable_protection(struct ieee80211com *ic) 2340172211Ssam{ 2341172211Ssam KASSERT(ic->ic_nonerpsta == 0 && 2342172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, 2343172211Ssam ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta, 2344172211Ssam ic->ic_flags_ext)); 2345172211Ssam 2346172211Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 2347172211Ssam /* XXX verify mode? */ 2348172211Ssam if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { 2349172211Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 2350172211Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 2351172211Ssam } 2352179642Ssam ieee80211_notify_erp_locked(ic); 2353172211Ssam} 2354172211Ssam 2355138568Ssam/* 2356138568Ssam * Handle a station leaving an 11g network. 2357138568Ssam */ 2358138568Ssamstatic void 2359178354Ssamieee80211_node_leave_11g(struct ieee80211_node *ni) 2360138568Ssam{ 2361178354Ssam struct ieee80211com *ic = ni->ni_ic; 2362138568Ssam 2363173273Ssam IEEE80211_LOCK_ASSERT(ic); 2364173273Ssam 2365170530Ssam KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), 2366178354Ssam ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, 2367178354Ssam ic->ic_bsschan->ic_flags)); 2368138568Ssam 2369138568Ssam /* 2370138568Ssam * If a long slot station do the slot time bookkeeping. 2371138568Ssam */ 2372138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2373138568Ssam KASSERT(ic->ic_longslotsta > 0, 2374138568Ssam ("bogus long slot station count %d", ic->ic_longslotsta)); 2375138568Ssam ic->ic_longslotsta--; 2376178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2377172211Ssam "long slot time station leaves, count now %d", 2378172211Ssam ic->ic_longslotsta); 2379138568Ssam if (ic->ic_longslotsta == 0) { 2380138568Ssam /* 2381138568Ssam * Re-enable use of short slot time if supported 2382138568Ssam * and not operating in IBSS mode (per spec). 2383138568Ssam */ 2384138568Ssam if ((ic->ic_caps & IEEE80211_C_SHSLOT) && 2385138568Ssam ic->ic_opmode != IEEE80211_M_IBSS) { 2386178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 2387178354Ssam IEEE80211_MSG_ASSOC, 2388138568Ssam "%s: re-enable use of short slot time\n", 2389138568Ssam __func__); 2390138568Ssam ieee80211_set_shortslottime(ic, 1); 2391138568Ssam } 2392138568Ssam } 2393138568Ssam } 2394138568Ssam /* 2395138568Ssam * If a non-ERP station do the protection-related bookkeeping. 2396138568Ssam */ 2397138568Ssam if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { 2398138568Ssam KASSERT(ic->ic_nonerpsta > 0, 2399138568Ssam ("bogus non-ERP station count %d", ic->ic_nonerpsta)); 2400138568Ssam ic->ic_nonerpsta--; 2401178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2402172211Ssam "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta, 2403172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ? 2404172211Ssam " (non-ERP sta present)" : ""); 2405172211Ssam if (ic->ic_nonerpsta == 0 && 2406172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2407178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2408138568Ssam "%s: disable use of protection\n", __func__); 2409172211Ssam disable_protection(ic); 2410138568Ssam } 2411138568Ssam } 2412138568Ssam} 2413138568Ssam 2414138568Ssam/* 2415172211Ssam * Time out presence of an overlapping bss with non-ERP 2416172211Ssam * stations. When operating in hostap mode we listen for 2417172211Ssam * beacons from other stations and if we identify a non-ERP 2418172211Ssam * station is present we enable protection. To identify 2419172211Ssam * when all non-ERP stations are gone we time out this 2420172211Ssam * condition. 2421172211Ssam */ 2422172211Ssamstatic void 2423172211Ssamieee80211_erp_timeout(struct ieee80211com *ic) 2424172211Ssam{ 2425172211Ssam 2426172211Ssam IEEE80211_LOCK_ASSERT(ic); 2427172211Ssam 2428172211Ssam if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) && 2429172211Ssam time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { 2430178354Ssam#if 0 2431178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 2432178354Ssam "%s", "age out non-ERP sta present on channel"); 2433178354Ssam#endif 2434172211Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; 2435172211Ssam if (ic->ic_nonerpsta == 0) 2436172211Ssam disable_protection(ic); 2437172211Ssam } 2438172211Ssam} 2439172211Ssam 2440172211Ssam/* 2441138568Ssam * Handle bookkeeping for station deauthentication/disassociation 2442138568Ssam * when operating as an ap. 2443138568Ssam */ 2444138568Ssamvoid 2445178354Ssamieee80211_node_leave(struct ieee80211_node *ni) 2446138568Ssam{ 2447178354Ssam struct ieee80211com *ic = ni->ni_ic; 2448178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2449140499Ssam struct ieee80211_node_table *nt = ni->ni_table; 2450138568Ssam 2451178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2452172211Ssam "station with aid %d leaves", IEEE80211_NODE_AID(ni)); 2453138568Ssam 2454178354Ssam KASSERT(vap->iv_opmode != IEEE80211_M_STA, 2455178354Ssam ("unexpected operating mode %u", vap->iv_opmode)); 2456138568Ssam /* 2457138568Ssam * If node wasn't previously associated all 2458138568Ssam * we need to do is reclaim the reference. 2459138568Ssam */ 2460138568Ssam /* XXX ibss mode bypasses 11g and notification */ 2461138568Ssam if (ni->ni_associd == 0) 2462138568Ssam goto done; 2463138568Ssam /* 2464138568Ssam * Tell the authenticator the station is leaving. 2465138568Ssam * Note that we must do this before yanking the 2466138568Ssam * association id as the authenticator uses the 2467138568Ssam * associd to locate it's state block. 2468138568Ssam */ 2469178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 2470178354Ssam vap->iv_auth->ia_node_leave(ni); 2471173273Ssam 2472173273Ssam IEEE80211_LOCK(ic); 2473178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 2474138568Ssam ni->ni_associd = 0; 2475178354Ssam vap->iv_sta_assoc--; 2476138568Ssam ic->ic_sta_assoc--; 2477138568Ssam 2478173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2479173273Ssam ieee80211_ht_node_leave(ni); 2480170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2481170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2482178354Ssam ieee80211_node_leave_11g(ni); 2483173273Ssam IEEE80211_UNLOCK(ic); 2484138568Ssam /* 2485138568Ssam * Cleanup station state. In particular clear various 2486138568Ssam * state that might otherwise be reused if the node 2487138568Ssam * is reused before the reference count goes to zero 2488138568Ssam * (and memory is reclaimed). 2489138568Ssam */ 2490178354Ssam ieee80211_sta_leave(ni); 2491138568Ssamdone: 2492140499Ssam /* 2493140499Ssam * Remove the node from any table it's recorded in and 2494140499Ssam * drop the caller's reference. Removal from the table 2495140499Ssam * is important to insure the node is not reprocessed 2496140499Ssam * for inactivity. 2497140499Ssam */ 2498140499Ssam if (nt != NULL) { 2499140499Ssam IEEE80211_NODE_LOCK(nt); 2500140499Ssam node_reclaim(nt, ni); 2501140499Ssam IEEE80211_NODE_UNLOCK(nt); 2502140499Ssam } else 2503140499Ssam ieee80211_free_node(ni); 2504138568Ssam} 2505138568Ssam 2506178354Ssamstruct rssiinfo { 2507178354Ssam struct ieee80211vap *vap; 2508178354Ssam int rssi_samples; 2509178354Ssam uint32_t rssi_total; 2510178354Ssam}; 2511178354Ssam 2512178354Ssamstatic void 2513178354Ssamget_hostap_rssi(void *arg, struct ieee80211_node *ni) 2514178354Ssam{ 2515178354Ssam struct rssiinfo *info = arg; 2516178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2517178354Ssam int8_t rssi; 2518178354Ssam 2519178354Ssam if (info->vap != vap) 2520178354Ssam return; 2521178354Ssam /* only associated stations */ 2522178354Ssam if (ni->ni_associd == 0) 2523178354Ssam return; 2524178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2525178354Ssam if (rssi != 0) { 2526178354Ssam info->rssi_samples++; 2527178354Ssam info->rssi_total += rssi; 2528178354Ssam } 2529178354Ssam} 2530178354Ssam 2531178354Ssamstatic void 2532178354Ssamget_adhoc_rssi(void *arg, struct ieee80211_node *ni) 2533178354Ssam{ 2534178354Ssam struct rssiinfo *info = arg; 2535178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2536178354Ssam int8_t rssi; 2537178354Ssam 2538178354Ssam if (info->vap != vap) 2539178354Ssam return; 2540178354Ssam /* only neighbors */ 2541178354Ssam /* XXX check bssid */ 2542178354Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 2543178354Ssam return; 2544178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2545178354Ssam if (rssi != 0) { 2546178354Ssam info->rssi_samples++; 2547178354Ssam info->rssi_total += rssi; 2548178354Ssam } 2549178354Ssam} 2550178354Ssam 2551170530Ssamint8_t 2552178354Ssamieee80211_getrssi(struct ieee80211vap *vap) 2553138568Ssam{ 2554138568Ssam#define NZ(x) ((x) == 0 ? 1 : (x)) 2555178354Ssam struct ieee80211com *ic = vap->iv_ic; 2556178354Ssam struct rssiinfo info; 2557138568Ssam 2558178354Ssam info.rssi_total = 0; 2559178354Ssam info.rssi_samples = 0; 2560178354Ssam info.vap = vap; 2561178354Ssam switch (vap->iv_opmode) { 2562138568Ssam case IEEE80211_M_IBSS: /* average of all ibss neighbors */ 2563138568Ssam case IEEE80211_M_AHDEMO: /* average of all neighbors */ 2564178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info); 2565178354Ssam break; 2566138568Ssam case IEEE80211_M_HOSTAP: /* average of all associated stations */ 2567178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info); 2568138568Ssam break; 2569138568Ssam case IEEE80211_M_MONITOR: /* XXX */ 2570138568Ssam case IEEE80211_M_STA: /* use stats from associated ap */ 2571138568Ssam default: 2572178354Ssam if (vap->iv_bss != NULL) 2573178354Ssam info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); 2574178354Ssam info.rssi_samples = 1; 2575138568Ssam break; 2576138568Ssam } 2577178354Ssam return info.rssi_total / NZ(info.rssi_samples); 2578138568Ssam#undef NZ 2579138568Ssam} 2580138568Ssam 2581170530Ssamvoid 2582178354Ssamieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) 2583138568Ssam{ 2584138568Ssam 2585178354Ssam if (vap->iv_bss == NULL) /* NB: shouldn't happen */ 2586170530Ssam return; 2587178354Ssam vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); 2588170530Ssam /* for non-station mode return avg'd rssi accounting */ 2589178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 2590178354Ssam *rssi = ieee80211_getrssi(vap); 2591138568Ssam} 2592