ieee80211_node.c revision 188494
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 188494 2009-02-11 18:40:09Z 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; 230187898Ssam enum ieee80211_phymode mode; 231183251Ssam 232183251Ssam if (ni->ni_flags & IEEE80211_NODE_HT) { 233183251Ssam if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) 234187898Ssam mode = IEEE80211_MODE_11NA; 235183251Ssam else 236187898Ssam mode = IEEE80211_MODE_11NG; 237183251Ssam } else { /* legacy rate handling */ 238187898Ssam /* NB: 108A/108G should be handled as 11a/11g respectively */ 239187898Ssam if (IEEE80211_IS_CHAN_ST(ni->ni_chan)) 240187898Ssam mode = IEEE80211_MODE_STURBO_A; 241187898Ssam else if (IEEE80211_IS_CHAN_A(ni->ni_chan)) 242187898Ssam mode = IEEE80211_MODE_11A; 243183251Ssam else if (ni->ni_flags & IEEE80211_NODE_ERP) 244187898Ssam mode = IEEE80211_MODE_11G; 245183251Ssam else 246187898Ssam mode = IEEE80211_MODE_11B; 247183251Ssam } 248187898Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 249183251Ssam} 250183251Ssam 251183251Ssam/* 252138568Ssam * Set/change the channel. The rate set is also updated as 253138568Ssam * to insure a consistent view by drivers. 254178354Ssam * XXX should be private but hostap needs it to deal with CSA 255138568Ssam */ 256178354Ssamvoid 257178354Ssamieee80211_node_set_chan(struct ieee80211_node *ni, 258178354Ssam struct ieee80211_channel *chan) 259138568Ssam{ 260178354Ssam struct ieee80211com *ic = ni->ni_ic; 261183251Ssam struct ieee80211vap *vap = ni->ni_vap; 262183251Ssam enum ieee80211_phymode mode; 263170530Ssam 264178354Ssam KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel")); 265178354Ssam 266138568Ssam ni->ni_chan = chan; 267183251Ssam mode = ieee80211_chan2mode(chan); 268170530Ssam if (IEEE80211_IS_CHAN_HT(chan)) { 269170530Ssam /* 270170530Ssam * XXX Gotta be careful here; the rate set returned by 271170530Ssam * ieee80211_get_suprates is actually any HT rate 272170530Ssam * set so blindly copying it will be bad. We must 273170530Ssam * install the legacy rate est in ni_rates and the 274170530Ssam * HT rate set in ni_htrates. 275170530Ssam */ 276170530Ssam ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); 277183251Ssam /* 278183251Ssam * Setup bss tx parameters based on operating mode. We 279183251Ssam * use legacy rates when operating in a mixed HT+non-HT bss 280183251Ssam * and non-ERP rates in 11g for mixed ERP+non-ERP bss. 281183251Ssam */ 282183251Ssam if (mode == IEEE80211_MODE_11NA && 283183251Ssam (vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0) 284183251Ssam mode = IEEE80211_MODE_11A; 285183251Ssam else if (mode == IEEE80211_MODE_11NG && 286183251Ssam (vap->iv_flags_ext & IEEE80211_FEXT_PUREN) == 0) 287183251Ssam mode = IEEE80211_MODE_11G; 288183251Ssam if (mode == IEEE80211_MODE_11G && 289183251Ssam (vap->iv_flags & IEEE80211_F_PUREG) == 0) 290183251Ssam mode = IEEE80211_MODE_11B; 291170530Ssam } 292183251Ssam ni->ni_txparms = &vap->iv_txparms[mode]; 293165569Ssam ni->ni_rates = *ieee80211_get_suprates(ic, chan); 294138568Ssam} 295138568Ssam 296141658Ssamstatic __inline void 297141658Ssamcopy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) 298141658Ssam{ 299141658Ssam /* propagate useful state */ 300141658Ssam nbss->ni_authmode = obss->ni_authmode; 301141658Ssam nbss->ni_txpower = obss->ni_txpower; 302141658Ssam nbss->ni_vlan = obss->ni_vlan; 303141658Ssam /* XXX statistics? */ 304178354Ssam /* XXX legacy WDS bssid? */ 305141658Ssam} 306141658Ssam 307116742Ssamvoid 308178354Ssamieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) 309116742Ssam{ 310178354Ssam struct ieee80211com *ic = vap->iv_ic; 311116742Ssam struct ieee80211_node *ni; 312116742Ssam 313178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 314178354Ssam "%s: creating ibss on channel %u\n", __func__, 315178354Ssam ieee80211_chan2ieee(ic, chan)); 316138568Ssam 317178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 318140753Ssam if (ni == NULL) { 319140753Ssam /* XXX recovery? */ 320138568Ssam return; 321138568Ssam } 322178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 323178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 324178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 325178354Ssam if (vap->iv_bss != NULL) 326178354Ssam copy_bss(ni, vap->iv_bss); 327148843Ssam ni->ni_intval = ic->ic_bintval; 328178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) 329116742Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 330116742Ssam if (ic->ic_phytype == IEEE80211_T_FH) { 331116742Ssam ni->ni_fhdwell = 200; /* XXX */ 332116742Ssam ni->ni_fhindex = 1; 333116742Ssam } 334178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 335178354Ssam vap->iv_flags |= IEEE80211_F_SIBSS; 336138568Ssam ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ 337178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 338178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 339167282Ssam else { 340167282Ssam get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN); 341167282Ssam /* clear group bit, add local bit */ 342167282Ssam ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; 343167282Ssam } 344178354Ssam } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 345178354Ssam if (vap->iv_flags & IEEE80211_F_DESBSSID) 346178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); 347153403Ssam else 348186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 349186904Ssam if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) 350186904Ssam#endif 351153403Ssam memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 352138568Ssam } 353138568Ssam /* 354138568Ssam * Fix the channel and related attributes. 355138568Ssam */ 356178354Ssam /* clear DFS CAC state on previous channel */ 357178354Ssam if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && 358178354Ssam ic->ic_bsschan->ic_freq != chan->ic_freq && 359178354Ssam IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) 360178354Ssam ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); 361170530Ssam ic->ic_bsschan = chan; 362178354Ssam ieee80211_node_set_chan(ni, chan); 363170530Ssam ic->ic_curmode = ieee80211_chan2mode(chan); 364138568Ssam /* 365178354Ssam * Do mode-specific setup. 366138568Ssam */ 367170530Ssam if (IEEE80211_IS_CHAN_FULL(chan)) { 368170530Ssam if (IEEE80211_IS_CHAN_ANYG(chan)) { 369170530Ssam /* 370178354Ssam * Use a mixed 11b/11g basic rate set. 371170530Ssam */ 372178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 373178354Ssam IEEE80211_MODE_11G); 374178354Ssam if (vap->iv_flags & IEEE80211_F_PUREG) { 375178354Ssam /* 376178354Ssam * Also mark OFDM rates basic so 11b 377178354Ssam * stations do not join (WiFi compliance). 378178354Ssam */ 379178354Ssam ieee80211_addbasicrates(&ni->ni_rates, 380178354Ssam IEEE80211_MODE_11A); 381178354Ssam } 382170530Ssam } else if (IEEE80211_IS_CHAN_B(chan)) { 383170530Ssam /* 384170530Ssam * Force pure 11b rate set. 385170530Ssam */ 386178354Ssam ieee80211_setbasicrates(&ni->ni_rates, 387170530Ssam IEEE80211_MODE_11B); 388170530Ssam } 389170530Ssam } 390138568Ssam 391170530Ssam (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); 392116742Ssam} 393116742Ssam 394170530Ssam/* 395170530Ssam * Reset bss state on transition to the INIT state. 396170530Ssam * Clear any stations from the table (they have been 397170530Ssam * deauth'd) and reset the bss node (clears key, rate 398170530Ssam * etc. state). 399170530Ssam */ 400138568Ssamvoid 401178354Ssamieee80211_reset_bss(struct ieee80211vap *vap) 402138568Ssam{ 403178354Ssam struct ieee80211com *ic = vap->iv_ic; 404138568Ssam struct ieee80211_node *ni, *obss; 405138568Ssam 406178354Ssam ieee80211_node_table_reset(&ic->ic_sta, vap); 407178354Ssam /* XXX multi-bss: wrong */ 408170530Ssam ieee80211_reset_erp(ic); 409140753Ssam 410178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr); 411138568Ssam KASSERT(ni != NULL, ("unable to setup inital BSS node")); 412178354Ssam obss = vap->iv_bss; 413178354Ssam vap->iv_bss = ieee80211_ref_node(ni); 414141658Ssam if (obss != NULL) { 415141658Ssam copy_bss(ni, obss); 416148843Ssam ni->ni_intval = ic->ic_bintval; 417138568Ssam ieee80211_free_node(obss); 418178354Ssam } else 419178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); 420138568Ssam} 421138568Ssam 422170530Ssamstatic int 423170530Ssammatch_ssid(const struct ieee80211_node *ni, 424170530Ssam int nssid, const struct ieee80211_scan_ssid ssids[]) 425170530Ssam{ 426170530Ssam int i; 427148432Ssam 428170530Ssam for (i = 0; i < nssid; i++) { 429170530Ssam if (ni->ni_esslen == ssids[i].len && 430170530Ssam memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) 431170530Ssam return 1; 432170530Ssam } 433170530Ssam return 0; 434170530Ssam} 435170530Ssam 436170530Ssam/* 437170530Ssam * Test a node for suitability/compatibility. 438170530Ssam */ 439127767Ssamstatic int 440178354Ssamcheck_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) 441127767Ssam{ 442178354Ssam struct ieee80211com *ic = ni->ni_ic; 443170530Ssam uint8_t rate; 444170530Ssam 445170530Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 446170530Ssam return 0; 447178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 448170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 449170530Ssam return 0; 450170530Ssam } else { 451170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 452170530Ssam return 0; 453170530Ssam } 454178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 455170530Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 456170530Ssam return 0; 457170530Ssam } else { 458170530Ssam /* XXX does this mean privacy is supported or required? */ 459170530Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 460170530Ssam return 0; 461170530Ssam } 462170530Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 463170530Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 464170530Ssam if (rate & IEEE80211_RATE_BASIC) 465170530Ssam return 0; 466178354Ssam if (vap->iv_des_nssid != 0 && 467178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 468170530Ssam return 0; 469178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 470178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 471170530Ssam return 0; 472170530Ssam return 1; 473170530Ssam} 474170530Ssam 475170530Ssam#ifdef IEEE80211_DEBUG 476170530Ssam/* 477170530Ssam * Display node suitability/compatibility. 478170530Ssam */ 479170530Ssamstatic void 480178354Ssamcheck_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) 481170530Ssam{ 482178354Ssam struct ieee80211com *ic = ni->ni_ic; 483170530Ssam uint8_t rate; 484127767Ssam int fail; 485127767Ssam 486127767Ssam fail = 0; 487127767Ssam if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) 488127767Ssam fail |= 0x01; 489178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) { 490127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 491127767Ssam fail |= 0x02; 492127767Ssam } else { 493127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) 494127767Ssam fail |= 0x02; 495127767Ssam } 496178354Ssam if (vap->iv_flags & IEEE80211_F_PRIVACY) { 497127767Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) 498127767Ssam fail |= 0x04; 499127767Ssam } else { 500127767Ssam /* XXX does this mean privacy is supported or required? */ 501127767Ssam if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) 502127767Ssam fail |= 0x04; 503127767Ssam } 504167442Ssam rate = ieee80211_fix_rate(ni, &ni->ni_rates, 505165887Ssam IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); 506127767Ssam if (rate & IEEE80211_RATE_BASIC) 507127767Ssam fail |= 0x08; 508178354Ssam if (vap->iv_des_nssid != 0 && 509178354Ssam !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) 510127767Ssam fail |= 0x10; 511178354Ssam if ((vap->iv_flags & IEEE80211_F_DESBSSID) && 512178354Ssam !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) 513127767Ssam fail |= 0x20; 514127767Ssam 515170530Ssam printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); 516170530Ssam printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); 517170530Ssam printf(" %3d%c", 518170530Ssam ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); 519170530Ssam printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 520170530Ssam fail & 0x08 ? '!' : ' '); 521170530Ssam printf(" %4s%c", 522170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : 523170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : 524170530Ssam "????", 525170530Ssam fail & 0x02 ? '!' : ' '); 526170530Ssam printf(" %3s%c ", 527170530Ssam (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", 528170530Ssam fail & 0x04 ? '!' : ' '); 529170530Ssam ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 530170530Ssam printf("%s\n", fail & 0x10 ? "!" : ""); 531138568Ssam} 532170530Ssam#endif /* IEEE80211_DEBUG */ 533138568Ssam 534138568Ssam/* 535138568Ssam * Handle 802.11 ad hoc network merge. The 536138568Ssam * convention, set by the Wireless Ethernet Compatibility Alliance 537138568Ssam * (WECA), is that an 802.11 station will change its BSSID to match 538138568Ssam * the "oldest" 802.11 ad hoc network, on the same channel, that 539138568Ssam * has the station's desired SSID. The "oldest" 802.11 network 540138568Ssam * sends beacons with the greatest TSF timestamp. 541138568Ssam * 542138568Ssam * The caller is assumed to validate TSF's before attempting a merge. 543138568Ssam * 544138568Ssam * Return !0 if the BSSID changed, 0 otherwise. 545138568Ssam */ 546138568Ssamint 547148306Ssamieee80211_ibss_merge(struct ieee80211_node *ni) 548138568Ssam{ 549178354Ssam struct ieee80211vap *vap = ni->ni_vap; 550178354Ssam#ifdef IEEE80211_DEBUG 551148306Ssam struct ieee80211com *ic = ni->ni_ic; 552178354Ssam#endif 553138568Ssam 554178354Ssam if (ni == vap->iv_bss || 555178354Ssam IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { 556138568Ssam /* unchanged, nothing to do */ 557138568Ssam return 0; 558138568Ssam } 559178354Ssam if (!check_bss(vap, ni)) { 560170530Ssam /* capabilities mismatch */ 561178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 562138568Ssam "%s: merge failed, capabilities mismatch\n", __func__); 563170530Ssam#ifdef IEEE80211_DEBUG 564178354Ssam if (ieee80211_msg_assoc(vap)) 565178354Ssam check_bss_debug(vap, ni); 566170530Ssam#endif 567178354Ssam vap->iv_stats.is_ibss_capmismatch++; 568138568Ssam return 0; 569138568Ssam } 570178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, 571138568Ssam "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, 572138568Ssam ether_sprintf(ni->ni_bssid), 573138568Ssam ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", 574138568Ssam ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long", 575138568Ssam ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "" 576138568Ssam ); 577170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 578138568Ssam} 579138568Ssam 580138568Ssam/* 581178354Ssam * Calculate HT channel promotion flags for all vaps. 582178354Ssam * This assumes ni_chan have been setup for each vap. 583173273Ssam */ 584178354Ssamstatic int 585178354Ssamgethtadjustflags(struct ieee80211com *ic) 586178354Ssam{ 587178354Ssam struct ieee80211vap *vap; 588178354Ssam int flags; 589178354Ssam 590178354Ssam flags = 0; 591178354Ssam /* XXX locking */ 592178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 593178354Ssam if (vap->iv_state < IEEE80211_S_RUN) 594178354Ssam continue; 595178354Ssam switch (vap->iv_opmode) { 596178354Ssam case IEEE80211_M_WDS: 597178354Ssam case IEEE80211_M_STA: 598178354Ssam case IEEE80211_M_AHDEMO: 599178354Ssam case IEEE80211_M_HOSTAP: 600178354Ssam case IEEE80211_M_IBSS: 601178354Ssam flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); 602178354Ssam break; 603178354Ssam default: 604178354Ssam break; 605178354Ssam } 606178354Ssam } 607178354Ssam return flags; 608178354Ssam} 609178354Ssam 610178354Ssam/* 611178354Ssam * Check if the current channel needs to change based on whether 612184303Ssam * any vap's are using HT20/HT40. This is used to sync the state 613184303Ssam * of ic_curchan after a channel width change on a running vap. 614178354Ssam */ 615173273Ssamvoid 616178354Ssamieee80211_sync_curchan(struct ieee80211com *ic) 617173273Ssam{ 618178354Ssam struct ieee80211_channel *c; 619178354Ssam 620178354Ssam c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); 621178354Ssam if (c != ic->ic_curchan) { 622178354Ssam ic->ic_curchan = c; 623178354Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 624178354Ssam ic->ic_set_channel(ic); 625178354Ssam } 626178354Ssam} 627178354Ssam 628178354Ssam/* 629178354Ssam * Change the current channel. The request channel may be 630178354Ssam * promoted if other vap's are operating with HT20/HT40. 631178354Ssam */ 632178354Ssamvoid 633178354Ssamieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) 634178354Ssam{ 635178354Ssam if (ic->ic_htcaps & IEEE80211_HTC_HT) { 636178354Ssam int flags = gethtadjustflags(ic); 637178354Ssam /* 638178354Ssam * Check for channel promotion required to support the 639178354Ssam * set of running vap's. This assumes we are called 640178354Ssam * after ni_chan is setup for each vap. 641178354Ssam */ 642178354Ssam /* NB: this assumes IEEE80211_FEXT_USEHT40 > IEEE80211_FEXT_HT */ 643178354Ssam if (flags > ieee80211_htchanflags(c)) 644178354Ssam c = ieee80211_ht_adjust_channel(ic, c, flags); 645178354Ssam } 646178354Ssam ic->ic_bsschan = ic->ic_curchan = c; 647173273Ssam ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); 648173273Ssam ic->ic_set_channel(ic); 649173273Ssam} 650173273Ssam 651173273Ssam/* 652138568Ssam * Join the specified IBSS/BSS network. The node is assumed to 653138568Ssam * be passed in with a held reference. 654138568Ssam */ 655170530Ssamstatic int 656170530Ssamieee80211_sta_join1(struct ieee80211_node *selbs) 657138568Ssam{ 658178354Ssam struct ieee80211vap *vap = selbs->ni_vap; 659170530Ssam struct ieee80211com *ic = selbs->ni_ic; 660138568Ssam struct ieee80211_node *obss; 661170530Ssam int canreassoc; 662138568Ssam 663138568Ssam /* 664138568Ssam * Committed to selbs, setup state. 665138568Ssam */ 666178354Ssam obss = vap->iv_bss; 667170530Ssam /* 668170530Ssam * Check if old+new node have the same address in which 669170530Ssam * case we can reassociate when operating in sta mode. 670170530Ssam */ 671170530Ssam canreassoc = (obss != NULL && 672178354Ssam vap->iv_state == IEEE80211_S_RUN && 673170530Ssam IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); 674178354Ssam vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */ 675153352Ssam if (obss != NULL) { 676153352Ssam copy_bss(selbs, obss); 677178354Ssam ieee80211_node_reclaim(obss); 678178354Ssam obss = NULL; /* NB: guard against later use */ 679153352Ssam } 680165887Ssam 681138568Ssam /* 682165887Ssam * Delete unusable rates; we've already checked 683165887Ssam * that the negotiated rate set is acceptable. 684165887Ssam */ 685178354Ssam ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, 686167442Ssam IEEE80211_F_DODEL | IEEE80211_F_JOIN); 687165887Ssam 688178354Ssam ieee80211_setcurchan(ic, selbs->ni_chan); 689165887Ssam /* 690138568Ssam * Set the erp state (mostly the slot time) to deal with 691138568Ssam * the auto-select case; this should be redundant if the 692138568Ssam * mode is locked. 693138568Ssam */ 694138568Ssam ieee80211_reset_erp(ic); 695178354Ssam ieee80211_wme_initparams(vap); 696140753Ssam 697178354Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 698170530Ssam if (canreassoc) { 699170530Ssam /* Reassociate */ 700178354Ssam ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); 701170530Ssam } else { 702170530Ssam /* 703170530Ssam * Act as if we received a DEAUTH frame in case we 704170530Ssam * are invoked from the RUN state. This will cause 705170530Ssam * us to try to re-authenticate if we are operating 706170530Ssam * as a station. 707170530Ssam */ 708178354Ssam ieee80211_new_state(vap, IEEE80211_S_AUTH, 709170530Ssam IEEE80211_FC0_SUBTYPE_DEAUTH); 710170530Ssam } 711170530Ssam } else 712178354Ssam ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 713138568Ssam return 1; 714116742Ssam} 715116742Ssam 716170530Ssamint 717184274Ssamieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, 718170530Ssam const struct ieee80211_scan_entry *se) 719170530Ssam{ 720178354Ssam struct ieee80211com *ic = vap->iv_ic; 721170530Ssam struct ieee80211_node *ni; 722170530Ssam 723178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr); 724170530Ssam if (ni == NULL) { 725170530Ssam /* XXX msg */ 726170530Ssam return 0; 727170530Ssam } 728170530Ssam /* 729170530Ssam * Expand scan state into node's format. 730170530Ssam * XXX may not need all this stuff 731170530Ssam */ 732170530Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); 733170530Ssam ni->ni_esslen = se->se_ssid[1]; 734170530Ssam memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); 735170530Ssam ni->ni_rstamp = se->se_rstamp; 736170530Ssam ni->ni_tstamp.tsf = se->se_tstamp.tsf; 737170530Ssam ni->ni_intval = se->se_intval; 738170530Ssam ni->ni_capinfo = se->se_capinfo; 739184274Ssam ni->ni_chan = chan; 740170530Ssam ni->ni_timoff = se->se_timoff; 741170530Ssam ni->ni_fhdwell = se->se_fhdwell; 742170530Ssam ni->ni_fhindex = se->se_fhindex; 743170530Ssam ni->ni_erp = se->se_erp; 744178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); 745170530Ssam ni->ni_noise = se->se_noise; 746186870Ssam if (vap->iv_opmode == IEEE80211_M_STA) { 747186870Ssam /* NB: only infrastructure mode requires an associd */ 748186870Ssam ni->ni_flags |= IEEE80211_NODE_ASSOCID; 749186870Ssam } 750178354Ssam 751178354Ssam if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { 752178354Ssam ieee80211_ies_expand(&ni->ni_ies); 753178354Ssam if (ni->ni_ies.ath_ie != NULL) 754178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 755178354Ssam if (ni->ni_ies.htcap_ie != NULL) 756178354Ssam ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); 757178354Ssam if (ni->ni_ies.htinfo_ie != NULL) 758178354Ssam ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); 759186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 760186904Ssam if (ni->ni_ies.tdma_ie != NULL) 761186904Ssam ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); 762186904Ssam#endif 763173864Ssam } 764170530Ssam 765178354Ssam vap->iv_dtim_period = se->se_dtimperiod; 766178354Ssam vap->iv_dtim_count = 0; 767170530Ssam 768170530Ssam /* NB: must be after ni_chan is setup */ 769170530Ssam ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, 770170530Ssam IEEE80211_F_DOSORT); 771184279Ssam if (ieee80211_iserp_rateset(&ni->ni_rates)) 772184279Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 773184279Ssam node_setuptxparms(ni); 774170530Ssam 775170530Ssam return ieee80211_sta_join1(ieee80211_ref_node(ni)); 776170530Ssam} 777170530Ssam 778138568Ssam/* 779138568Ssam * Leave the specified IBSS/BSS network. The node is assumed to 780138568Ssam * be passed in with a held reference. 781138568Ssam */ 782138568Ssamvoid 783178354Ssamieee80211_sta_leave(struct ieee80211_node *ni) 784138568Ssam{ 785178354Ssam struct ieee80211com *ic = ni->ni_ic; 786178354Ssam 787138568Ssam ic->ic_node_cleanup(ni); 788178354Ssam ieee80211_notify_node_leave(ni); 789138568Ssam} 790138568Ssam 791178354Ssam/* 792178354Ssam * Send a deauthenticate frame and drop the station. 793178354Ssam */ 794178354Ssamvoid 795178354Ssamieee80211_node_deauth(struct ieee80211_node *ni, int reason) 796178354Ssam{ 797178354Ssam /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */ 798178354Ssam ieee80211_ref_node(ni); 799178354Ssam if (ni->ni_associd != 0) 800178354Ssam IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); 801178354Ssam ieee80211_node_leave(ni); 802178354Ssam ieee80211_free_node(ni); 803178354Ssam} 804178354Ssam 805116742Ssamstatic struct ieee80211_node * 806179643Ssamnode_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 807116742Ssam{ 808127768Ssam struct ieee80211_node *ni; 809138568Ssam 810186302Ssam ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node), 811127768Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 812127768Ssam return ni; 813116742Ssam} 814116742Ssam 815138568Ssam/* 816178354Ssam * Initialize an ie blob with the specified data. If previous 817178354Ssam * data exists re-use the data block. As a side effect we clear 818178354Ssam * all references to specific ie's; the caller is required to 819178354Ssam * recalculate them. 820178354Ssam */ 821178354Ssamint 822178354Ssamieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) 823178354Ssam{ 824178354Ssam /* NB: assumes data+len are the last fields */ 825178354Ssam memset(ies, 0, offsetof(struct ieee80211_ies, data)); 826178354Ssam if (ies->data != NULL && ies->len != len) { 827178354Ssam /* data size changed */ 828186302Ssam free(ies->data, M_80211_NODE_IE); 829178354Ssam ies->data = NULL; 830178354Ssam } 831178354Ssam if (ies->data == NULL) { 832186302Ssam ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT); 833178354Ssam if (ies->data == NULL) { 834178354Ssam ies->len = 0; 835178354Ssam /* NB: pointers have already been zero'd above */ 836178354Ssam return 0; 837178354Ssam } 838178354Ssam } 839178354Ssam memcpy(ies->data, data, len); 840178354Ssam ies->len = len; 841178354Ssam return 1; 842178354Ssam} 843178354Ssam 844178354Ssam/* 845178354Ssam * Reclaim storage for an ie blob. 846178354Ssam */ 847178354Ssamvoid 848178354Ssamieee80211_ies_cleanup(struct ieee80211_ies *ies) 849178354Ssam{ 850178354Ssam if (ies->data != NULL) 851186302Ssam free(ies->data, M_80211_NODE_IE); 852178354Ssam} 853178354Ssam 854178354Ssam/* 855178354Ssam * Expand an ie blob data contents and to fillin individual 856178354Ssam * ie pointers. The data blob is assumed to be well-formed; 857178354Ssam * we don't do any validity checking of ie lengths. 858178354Ssam */ 859178354Ssamvoid 860178354Ssamieee80211_ies_expand(struct ieee80211_ies *ies) 861178354Ssam{ 862178354Ssam uint8_t *ie; 863178354Ssam int ielen; 864178354Ssam 865178354Ssam ie = ies->data; 866178354Ssam ielen = ies->len; 867178354Ssam while (ielen > 0) { 868178354Ssam switch (ie[0]) { 869178354Ssam case IEEE80211_ELEMID_VENDOR: 870178354Ssam if (iswpaoui(ie)) 871178354Ssam ies->wpa_ie = ie; 872178354Ssam else if (iswmeoui(ie)) 873178354Ssam ies->wme_ie = ie; 874178354Ssam else if (isatherosoui(ie)) 875178354Ssam ies->ath_ie = ie; 876186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 877186904Ssam else if (istdmaoui(ie)) 878186904Ssam ies->tdma_ie = ie; 879186904Ssam#endif 880178354Ssam break; 881178354Ssam case IEEE80211_ELEMID_RSN: 882178354Ssam ies->rsn_ie = ie; 883178354Ssam break; 884178354Ssam case IEEE80211_ELEMID_HTCAP: 885178354Ssam ies->htcap_ie = ie; 886178354Ssam break; 887178354Ssam } 888178354Ssam ielen -= 2 + ie[1]; 889178354Ssam ie += 2 + ie[1]; 890178354Ssam } 891178354Ssam} 892178354Ssam 893178354Ssam/* 894138568Ssam * Reclaim any resources in a node and reset any critical 895138568Ssam * state. Typically nodes are free'd immediately after, 896138568Ssam * but in some cases the storage may be reused so we need 897138568Ssam * to insure consistent state (should probably fix that). 898138568Ssam */ 899116742Ssamstatic void 900138568Ssamnode_cleanup(struct ieee80211_node *ni) 901116742Ssam{ 902138568Ssam#define N(a) (sizeof(a)/sizeof(a[0])) 903178354Ssam struct ieee80211vap *vap = ni->ni_vap; 904170530Ssam int i; 905138568Ssam 906138568Ssam /* NB: preserve ni_table */ 907138568Ssam if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { 908178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 909178354Ssam vap->iv_ps_sta--; 910138568Ssam ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; 911178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, 912178354Ssam "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); 913138568Ssam } 914147788Ssam /* 915173273Ssam * Cleanup any HT-related state. 916173273Ssam */ 917173273Ssam if (ni->ni_flags & IEEE80211_NODE_HT) 918173273Ssam ieee80211_ht_node_cleanup(ni); 919173273Ssam /* 920147788Ssam * Clear AREF flag that marks the authorization refcnt bump 921147788Ssam * has happened. This is probably not needed as the node 922147788Ssam * should always be removed from the table so not found but 923147788Ssam * do it just in case. 924186099Ssam * Likewise clear the ASSOCID flag as these flags are intended 925186099Ssam * to be managed in tandem. 926147788Ssam */ 927186099Ssam ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); 928138568Ssam 929138568Ssam /* 930138568Ssam * Drain power save queue and, if needed, clear TIM. 931138568Ssam */ 932184288Ssam if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) 933178354Ssam vap->iv_set_tim(ni, 0); 934138568Ssam 935138568Ssam ni->ni_associd = 0; 936138568Ssam if (ni->ni_challenge != NULL) { 937186302Ssam free(ni->ni_challenge, M_80211_NODE); 938138568Ssam ni->ni_challenge = NULL; 939138568Ssam } 940138568Ssam /* 941138568Ssam * Preserve SSID, WPA, and WME ie's so the bss node is 942138568Ssam * reusable during a re-auth/re-assoc state transition. 943138568Ssam * If we remove these data they will not be recreated 944138568Ssam * because they come from a probe-response or beacon frame 945138568Ssam * which cannot be expected prior to the association-response. 946138568Ssam * This should not be an issue when operating in other modes 947138568Ssam * as stations leaving always go through a full state transition 948138568Ssam * which will rebuild this state. 949138568Ssam * 950138568Ssam * XXX does this leave us open to inheriting old state? 951138568Ssam */ 952138568Ssam for (i = 0; i < N(ni->ni_rxfrag); i++) 953138568Ssam if (ni->ni_rxfrag[i] != NULL) { 954138568Ssam m_freem(ni->ni_rxfrag[i]); 955138568Ssam ni->ni_rxfrag[i] = NULL; 956138568Ssam } 957148863Ssam /* 958148863Ssam * Must be careful here to remove any key map entry w/o a LOR. 959148863Ssam */ 960148863Ssam ieee80211_node_delucastkey(ni); 961138568Ssam#undef N 962116742Ssam} 963116742Ssam 964116742Ssamstatic void 965138568Ssamnode_free(struct ieee80211_node *ni) 966116742Ssam{ 967138568Ssam struct ieee80211com *ic = ni->ni_ic; 968138568Ssam 969138568Ssam ic->ic_node_cleanup(ni); 970178354Ssam ieee80211_ies_cleanup(&ni->ni_ies); 971184288Ssam ieee80211_psq_cleanup(&ni->ni_psq); 972178354Ssam IEEE80211_NODE_WDSQ_DESTROY(ni); 973186302Ssam free(ni, M_80211_NODE); 974116742Ssam} 975116742Ssam 976178354Ssamstatic void 977178354Ssamnode_age(struct ieee80211_node *ni) 978178354Ssam{ 979178354Ssam struct ieee80211vap *vap = ni->ni_vap; 980184303Ssam 981184303Ssam IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta); 982184303Ssam 983178354Ssam /* 984178354Ssam * Age frames on the power save queue. 985178354Ssam */ 986184288Ssam if (ieee80211_node_psq_age(ni) != 0 && 987184288Ssam ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) 988178354Ssam vap->iv_set_tim(ni, 0); 989178354Ssam /* 990178354Ssam * Age frames on the wds pending queue. 991178354Ssam */ 992178354Ssam if (IEEE80211_NODE_WDSQ_QLEN(ni) != 0) 993178354Ssam ieee80211_node_wdsq_age(ni); 994178354Ssam /* 995178354Ssam * Age out HT resources (e.g. frames on the 996178354Ssam * A-MPDU reorder queues). 997178354Ssam */ 998178354Ssam if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) 999178354Ssam ieee80211_ht_node_age(ni); 1000178354Ssam} 1001178354Ssam 1002170530Ssamstatic int8_t 1003138568Ssamnode_getrssi(const struct ieee80211_node *ni) 1004120104Ssam{ 1005178354Ssam uint32_t avgrssi = ni->ni_avgrssi; 1006178354Ssam int32_t rssi; 1007178354Ssam 1008178354Ssam if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) 1009178354Ssam return 0; 1010178354Ssam rssi = IEEE80211_RSSI_GET(avgrssi); 1011178354Ssam return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; 1012120104Ssam} 1013120104Ssam 1014116742Ssamstatic void 1015170530Ssamnode_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) 1016170530Ssam{ 1017178354Ssam *rssi = node_getrssi(ni); 1018170530Ssam *noise = ni->ni_noise; 1019170530Ssam} 1020170530Ssam 1021170530Ssamstatic void 1022178354Ssamnode_getmimoinfo(const struct ieee80211_node *ni, 1023178354Ssam struct ieee80211_mimo_info *info) 1024116742Ssam{ 1025178354Ssam /* XXX zero data? */ 1026178354Ssam} 1027178354Ssam 1028178354Ssamstruct ieee80211_node * 1029178354Ssamieee80211_alloc_node(struct ieee80211_node_table *nt, 1030178354Ssam struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1031178354Ssam{ 1032138568Ssam struct ieee80211com *ic = nt->nt_ic; 1033178354Ssam struct ieee80211_node *ni; 1034116742Ssam int hash; 1035116742Ssam 1036179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1037178354Ssam if (ni == NULL) { 1038178354Ssam vap->iv_stats.is_rx_nodealloc++; 1039178354Ssam return NULL; 1040178354Ssam } 1041178354Ssam 1042178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1043140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1044138568Ssam ether_sprintf(macaddr), nt->nt_name); 1045138568Ssam 1046116742Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1047116742Ssam hash = IEEE80211_NODE_HASH(macaddr); 1048138568Ssam ieee80211_node_initref(ni); /* mark referenced */ 1049138568Ssam ni->ni_chan = IEEE80211_CHAN_ANYC; 1050138568Ssam ni->ni_authmode = IEEE80211_AUTH_OPEN; 1051138568Ssam ni->ni_txpower = ic->ic_txpowlimit; /* max power */ 1052183251Ssam ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 1053178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); 1054178354Ssam ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; 1055139528Ssam ni->ni_inact_reload = nt->nt_inact_init; 1056139528Ssam ni->ni_inact = ni->ni_inact_reload; 1057170530Ssam ni->ni_ath_defkeyix = 0x7fff; 1058184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1059178354Ssam IEEE80211_NODE_WDSQ_INIT(ni, "unknown"); 1060138568Ssam 1061138568Ssam IEEE80211_NODE_LOCK(nt); 1062138568Ssam TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); 1063138568Ssam LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); 1064138568Ssam ni->ni_table = nt; 1065178354Ssam ni->ni_vap = vap; 1066138568Ssam ni->ni_ic = ic; 1067138568Ssam IEEE80211_NODE_UNLOCK(nt); 1068116742Ssam 1069184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1070184277Ssam "%s: inact_reload %u", __func__, ni->ni_inact_reload); 1071184277Ssam 1072116742Ssam return ni; 1073116742Ssam} 1074116742Ssam 1075148777Ssam/* 1076148777Ssam * Craft a temporary node suitable for sending a management frame 1077148777Ssam * to the specified station. We craft only as much state as we 1078148777Ssam * need to do the work since the node will be immediately reclaimed 1079148777Ssam * once the send completes. 1080148777Ssam */ 1081116742Ssamstruct ieee80211_node * 1082178354Ssamieee80211_tmp_node(struct ieee80211vap *vap, 1083178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1084148777Ssam{ 1085178354Ssam struct ieee80211com *ic = vap->iv_ic; 1086148777Ssam struct ieee80211_node *ni; 1087148777Ssam 1088179643Ssam ni = ic->ic_node_alloc(vap, macaddr); 1089148777Ssam if (ni != NULL) { 1090183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1091183259Ssam 1092178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1093148777Ssam "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); 1094148777Ssam 1095178354Ssam ni->ni_table = NULL; /* NB: pedantic */ 1096178354Ssam ni->ni_ic = ic; /* NB: needed to set channel */ 1097178354Ssam ni->ni_vap = vap; 1098178354Ssam 1099148777Ssam IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); 1100183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1101148777Ssam ieee80211_node_initref(ni); /* mark referenced */ 1102148777Ssam /* NB: required by ieee80211_fix_rate */ 1103183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1104178354Ssam ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, 1105148777Ssam IEEE80211_KEYIX_NONE); 1106183259Ssam ni->ni_txpower = bss->ni_txpower; 1107148777Ssam /* XXX optimize away */ 1108184288Ssam ieee80211_psq_init(&ni->ni_psq, "unknown"); 1109178354Ssam IEEE80211_NODE_WDSQ_INIT(ni, "unknown"); 1110148777Ssam } else { 1111148777Ssam /* XXX msg */ 1112178354Ssam vap->iv_stats.is_rx_nodealloc++; 1113148777Ssam } 1114148777Ssam return ni; 1115148777Ssam} 1116148777Ssam 1117148777Ssamstruct ieee80211_node * 1118178354Ssamieee80211_dup_bss(struct ieee80211vap *vap, 1119178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1120116742Ssam{ 1121178354Ssam struct ieee80211com *ic = vap->iv_ic; 1122138568Ssam struct ieee80211_node *ni; 1123138568Ssam 1124178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr); 1125116742Ssam if (ni != NULL) { 1126183259Ssam struct ieee80211_node *bss = vap->iv_bss; 1127127770Ssam /* 1128178354Ssam * Inherit from iv_bss. 1129127770Ssam */ 1130183259Ssam copy_bss(ni, bss); 1131183259Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); 1132183259Ssam ieee80211_node_set_chan(ni, bss->ni_chan); 1133178354Ssam } 1134116742Ssam return ni; 1135116742Ssam} 1136116742Ssam 1137178354Ssam/* 1138178354Ssam * Create a bss node for a legacy WDS vap. The far end does 1139178354Ssam * not associate so we just create create a new node and 1140178354Ssam * simulate an association. The caller is responsible for 1141178354Ssam * installing the node as the bss node and handling any further 1142178354Ssam * setup work like authorizing the port. 1143178354Ssam */ 1144178354Ssamstruct ieee80211_node * 1145178354Ssamieee80211_node_create_wds(struct ieee80211vap *vap, 1146178354Ssam const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) 1147178354Ssam{ 1148178354Ssam struct ieee80211com *ic = vap->iv_ic; 1149178354Ssam struct ieee80211_node *ni; 1150178354Ssam 1151178354Ssam /* XXX check if node already in sta table? */ 1152178354Ssam ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid); 1153178354Ssam if (ni != NULL) { 1154178354Ssam ni->ni_wdsvap = vap; 1155178354Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); 1156178354Ssam /* 1157178354Ssam * Inherit any manually configured settings. 1158178354Ssam */ 1159183259Ssam copy_bss(ni, vap->iv_bss); 1160178354Ssam ieee80211_node_set_chan(ni, chan); 1161178354Ssam /* NB: propagate ssid so available to WPA supplicant */ 1162178354Ssam ni->ni_esslen = vap->iv_des_ssid[0].len; 1163178354Ssam memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); 1164178354Ssam /* NB: no associd for peer */ 1165178354Ssam /* 1166178354Ssam * There are no management frames to use to 1167178354Ssam * discover neighbor capabilities, so blindly 1168178354Ssam * propagate the local configuration. 1169178354Ssam */ 1170178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1171178354Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1172178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1173178354Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1174178354Ssam if ((ic->ic_htcaps & IEEE80211_HTC_HT) && 1175178354Ssam (vap->iv_flags_ext & IEEE80211_FEXT_HT)) { 1176178354Ssam /* 1177178354Ssam * Device is HT-capable and HT is enabled for 1178178354Ssam * the vap; setup HT operation. On return 1179178354Ssam * ni_chan will be adjusted to an HT channel. 1180178354Ssam */ 1181178354Ssam ieee80211_ht_wds_init(ni); 1182178354Ssam } else { 1183178354Ssam struct ieee80211_channel *c = ni->ni_chan; 1184178354Ssam /* 1185178354Ssam * Force a legacy channel to be used. 1186178354Ssam */ 1187178354Ssam c = ieee80211_find_channel(ic, 1188178354Ssam c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); 1189178354Ssam KASSERT(c != NULL, ("no legacy channel, %u/%x", 1190178354Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); 1191178354Ssam ni->ni_chan = c; 1192178354Ssam } 1193178354Ssam } 1194178354Ssam return ni; 1195178354Ssam} 1196178354Ssam 1197178354Ssamstruct ieee80211_node * 1198138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1199178354Ssamieee80211_find_node_locked_debug(struct ieee80211_node_table *nt, 1200178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1201138568Ssam#else 1202178354Ssamieee80211_find_node_locked(struct ieee80211_node_table *nt, 1203178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1204138568Ssam#endif 1205116742Ssam{ 1206116742Ssam struct ieee80211_node *ni; 1207116742Ssam int hash; 1208116742Ssam 1209138568Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1210127772Ssam 1211116742Ssam hash = IEEE80211_NODE_HASH(macaddr); 1212138568Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1213116742Ssam if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1214138568Ssam ieee80211_ref_node(ni); /* mark referenced */ 1215138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1216178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1217140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1218140766Ssam func, line, 1219140766Ssam ni, ether_sprintf(ni->ni_macaddr), 1220140766Ssam ieee80211_node_refcnt(ni)); 1221138568Ssam#endif 1222127772Ssam return ni; 1223116742Ssam } 1224116742Ssam } 1225127772Ssam return NULL; 1226127772Ssam} 1227178354Ssam 1228178354Ssamstruct ieee80211_node * 1229138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1230178354Ssamieee80211_find_node_debug(struct ieee80211_node_table *nt, 1231178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1232178354Ssam#else 1233178354Ssamieee80211_find_node(struct ieee80211_node_table *nt, 1234178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1235138568Ssam#endif 1236178354Ssam{ 1237178354Ssam struct ieee80211_node *ni; 1238127772Ssam 1239178354Ssam IEEE80211_NODE_LOCK(nt); 1240178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1241178354Ssam IEEE80211_NODE_UNLOCK(nt); 1242178354Ssam return ni; 1243178354Ssam} 1244178354Ssam 1245127772Ssamstruct ieee80211_node * 1246138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1247178354Ssamieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt, 1248178354Ssam const struct ieee80211vap *vap, 1249178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1250138568Ssam#else 1251178354Ssamieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, 1252178354Ssam const struct ieee80211vap *vap, 1253178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1254138568Ssam#endif 1255127772Ssam{ 1256127772Ssam struct ieee80211_node *ni; 1257178354Ssam int hash; 1258127772Ssam 1259178354Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1260178354Ssam 1261178354Ssam hash = IEEE80211_NODE_HASH(macaddr); 1262178354Ssam LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { 1263178354Ssam if (ni->ni_vap == vap && 1264178354Ssam IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { 1265178354Ssam ieee80211_ref_node(ni); /* mark referenced */ 1266178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1267178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1268178354Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, 1269178354Ssam func, line, 1270178354Ssam ni, ether_sprintf(ni->ni_macaddr), 1271178354Ssam ieee80211_node_refcnt(ni)); 1272178354Ssam#endif 1273178354Ssam return ni; 1274178354Ssam } 1275178354Ssam } 1276178354Ssam return NULL; 1277178354Ssam} 1278178354Ssam 1279178354Ssamstruct ieee80211_node * 1280178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1281178354Ssamieee80211_find_vap_node_debug(struct ieee80211_node_table *nt, 1282178354Ssam const struct ieee80211vap *vap, 1283178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line) 1284178354Ssam#else 1285178354Ssamieee80211_find_vap_node(struct ieee80211_node_table *nt, 1286178354Ssam const struct ieee80211vap *vap, 1287178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1288178354Ssam#endif 1289178354Ssam{ 1290178354Ssam struct ieee80211_node *ni; 1291178354Ssam 1292138568Ssam IEEE80211_NODE_LOCK(nt); 1293178354Ssam ni = ieee80211_find_vap_node_locked(nt, vap, macaddr); 1294138568Ssam IEEE80211_NODE_UNLOCK(nt); 1295116742Ssam return ni; 1296116742Ssam} 1297116742Ssam 1298116742Ssam/* 1299138568Ssam * Fake up a node; this handles node discovery in adhoc mode. 1300138568Ssam * Note that for the driver's benefit we we treat this like 1301138568Ssam * an association so the driver has an opportunity to setup 1302138568Ssam * it's private state. 1303138568Ssam */ 1304138568Ssamstruct ieee80211_node * 1305178354Ssamieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, 1306170530Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1307138568Ssam{ 1308138568Ssam struct ieee80211_node *ni; 1309138568Ssam 1310178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1311153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); 1312178354Ssam ni = ieee80211_dup_bss(vap, macaddr); 1313138568Ssam if (ni != NULL) { 1314178354Ssam struct ieee80211com *ic = vap->iv_ic; 1315178354Ssam 1316138568Ssam /* XXX no rate negotiation; just dup */ 1317178354Ssam ni->ni_rates = vap->iv_bss->ni_rates; 1318178354Ssam if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 1319153404Ssam /* 1320170530Ssam * In adhoc demo mode there are no management 1321170530Ssam * frames to use to discover neighbor capabilities, 1322170530Ssam * so blindly propagate the local configuration 1323170530Ssam * so we can do interesting things (e.g. use 1324170530Ssam * WME to disable ACK's). 1325153404Ssam */ 1326178354Ssam if (vap->iv_flags & IEEE80211_F_WME) 1327153404Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1328178354Ssam if (vap->iv_flags & IEEE80211_F_FF) 1329170530Ssam ni->ni_flags |= IEEE80211_NODE_FF; 1330153404Ssam } 1331183251Ssam node_setuptxparms(ni); 1332178354Ssam if (ic->ic_newassoc != NULL) 1333178354Ssam ic->ic_newassoc(ni, 1); 1334170530Ssam /* XXX not right for 802.1x/WPA */ 1335170530Ssam ieee80211_node_authorize(ni); 1336138568Ssam } 1337138568Ssam return ni; 1338138568Ssam} 1339138568Ssam 1340148936Ssamvoid 1341153073Ssamieee80211_init_neighbor(struct ieee80211_node *ni, 1342153073Ssam const struct ieee80211_frame *wh, 1343153073Ssam const struct ieee80211_scanparams *sp) 1344153073Ssam{ 1345153073Ssam ni->ni_esslen = sp->ssid[1]; 1346153073Ssam memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); 1347153073Ssam IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); 1348153073Ssam memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); 1349153073Ssam ni->ni_intval = sp->bintval; 1350153073Ssam ni->ni_capinfo = sp->capinfo; 1351153073Ssam ni->ni_chan = ni->ni_ic->ic_curchan; 1352153073Ssam ni->ni_fhdwell = sp->fhdwell; 1353153073Ssam ni->ni_fhindex = sp->fhindex; 1354153073Ssam ni->ni_erp = sp->erp; 1355153073Ssam ni->ni_timoff = sp->timoff; 1356153073Ssam 1357178354Ssam if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { 1358178354Ssam ieee80211_ies_expand(&ni->ni_ies); 1359186659Ssam if (ni->ni_ies.wme_ie != NULL) 1360186659Ssam ni->ni_flags |= IEEE80211_NODE_QOS; 1361186659Ssam else 1362186659Ssam ni->ni_flags &= ~IEEE80211_NODE_QOS; 1363178354Ssam if (ni->ni_ies.ath_ie != NULL) 1364178354Ssam ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); 1365178354Ssam } 1366178354Ssam 1367153073Ssam /* NB: must be after ni_chan is setup */ 1368165887Ssam ieee80211_setup_rates(ni, sp->rates, sp->xrates, 1369165887Ssam IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | 1370165887Ssam IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 1371153073Ssam} 1372153073Ssam 1373148936Ssam/* 1374148936Ssam * Do node discovery in adhoc mode on receipt of a beacon 1375148936Ssam * or probe response frame. Note that for the driver's 1376148936Ssam * benefit we we treat this like an association so the 1377148936Ssam * driver has an opportunity to setup it's private state. 1378148936Ssam */ 1379148936Ssamstruct ieee80211_node * 1380178354Ssamieee80211_add_neighbor(struct ieee80211vap *vap, 1381148936Ssam const struct ieee80211_frame *wh, 1382148936Ssam const struct ieee80211_scanparams *sp) 1383148936Ssam{ 1384148936Ssam struct ieee80211_node *ni; 1385148936Ssam 1386178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1387153073Ssam "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); 1388178354Ssam ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ 1389148936Ssam if (ni != NULL) { 1390178354Ssam struct ieee80211com *ic = vap->iv_ic; 1391178354Ssam 1392153073Ssam ieee80211_init_neighbor(ni, wh, sp); 1393183251Ssam node_setuptxparms(ni); 1394148936Ssam if (ic->ic_newassoc != NULL) 1395148936Ssam ic->ic_newassoc(ni, 1); 1396148936Ssam /* XXX not right for 802.1x/WPA */ 1397148936Ssam ieee80211_node_authorize(ni); 1398148936Ssam } 1399148936Ssam return ni; 1400148936Ssam} 1401148936Ssam 1402148863Ssam#define IS_CTL(wh) \ 1403148863Ssam ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) 1404148863Ssam#define IS_PSPOLL(wh) \ 1405148863Ssam ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL) 1406170530Ssam#define IS_BAR(wh) \ 1407170530Ssam ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_BAR) 1408179220Ssam#define IS_PROBEREQ(wh) \ 1409179220Ssam ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ 1410179220Ssam == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) 1411179220Ssam#define IS_BCAST_PROBEREQ(wh) \ 1412179220Ssam (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ 1413179220Ssam ((const struct ieee80211_frame *)(wh))->i_addr3)) 1414170530Ssam 1415179220Ssamstatic __inline struct ieee80211_node * 1416179220Ssam_find_rxnode(struct ieee80211_node_table *nt, 1417179220Ssam const struct ieee80211_frame_min *wh) 1418179220Ssam{ 1419179220Ssam /* XXX 4-address frames? */ 1420179220Ssam if (IS_CTL(wh) && !IS_PSPOLL(wh) && !IS_BAR(wh) /*&& !IS_RTS(ah)*/) 1421179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr1); 1422179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1423179220Ssam return NULL; /* spam bcast probe req to all vap's */ 1424179220Ssam return ieee80211_find_node_locked(nt, wh->i_addr2); 1425179220Ssam} 1426179220Ssam 1427138568Ssam/* 1428138568Ssam * Locate the node for sender, track state, and then pass the 1429179220Ssam * (referenced) node up to the 802.11 layer for its use. Note 1430179220Ssam * we can return NULL if the sender is not in the table. 1431138568Ssam */ 1432138568Ssamstruct ieee80211_node * 1433138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1434138568Ssamieee80211_find_rxnode_debug(struct ieee80211com *ic, 1435138568Ssam const struct ieee80211_frame_min *wh, const char *func, int line) 1436138568Ssam#else 1437138568Ssamieee80211_find_rxnode(struct ieee80211com *ic, 1438138568Ssam const struct ieee80211_frame_min *wh) 1439138568Ssam#endif 1440138568Ssam{ 1441138568Ssam struct ieee80211_node_table *nt; 1442138568Ssam struct ieee80211_node *ni; 1443138568Ssam 1444170530Ssam nt = &ic->ic_sta; 1445138568Ssam IEEE80211_NODE_LOCK(nt); 1446179220Ssam ni = _find_rxnode(nt, wh); 1447138568Ssam IEEE80211_NODE_UNLOCK(nt); 1448138568Ssam 1449148863Ssam return ni; 1450148863Ssam} 1451148863Ssam 1452148863Ssam/* 1453148863Ssam * Like ieee80211_find_rxnode but use the supplied h/w 1454148863Ssam * key index as a hint to locate the node in the key 1455148863Ssam * mapping table. If an entry is present at the key 1456148863Ssam * index we return it; otherwise do a normal lookup and 1457148863Ssam * update the mapping table if the station has a unicast 1458148863Ssam * key assigned to it. 1459148863Ssam */ 1460148863Ssamstruct ieee80211_node * 1461148863Ssam#ifdef IEEE80211_DEBUG_REFCNT 1462148863Ssamieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic, 1463148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, 1464148863Ssam const char *func, int line) 1465148863Ssam#else 1466148863Ssamieee80211_find_rxnode_withkey(struct ieee80211com *ic, 1467148863Ssam const struct ieee80211_frame_min *wh, ieee80211_keyix keyix) 1468148863Ssam#endif 1469148863Ssam{ 1470148863Ssam struct ieee80211_node_table *nt; 1471148863Ssam struct ieee80211_node *ni; 1472148863Ssam 1473170530Ssam nt = &ic->ic_sta; 1474148863Ssam IEEE80211_NODE_LOCK(nt); 1475148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) 1476148863Ssam ni = nt->nt_keyixmap[keyix]; 1477148863Ssam else 1478148863Ssam ni = NULL; 1479148863Ssam if (ni == NULL) { 1480179220Ssam ni = _find_rxnode(nt, wh); 1481178354Ssam if (ni != NULL && nt->nt_keyixmap != NULL) { 1482148863Ssam /* 1483148863Ssam * If the station has a unicast key cache slot 1484148863Ssam * assigned update the key->node mapping table. 1485148863Ssam */ 1486148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1487148863Ssam /* XXX can keyixmap[keyix] != NULL? */ 1488148863Ssam if (keyix < nt->nt_keyixmax && 1489148863Ssam nt->nt_keyixmap[keyix] == NULL) { 1490178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1491178354Ssam IEEE80211_MSG_NODE, 1492148863Ssam "%s: add key map entry %p<%s> refcnt %d\n", 1493148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1494148863Ssam ieee80211_node_refcnt(ni)+1); 1495148863Ssam nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); 1496148863Ssam } 1497148863Ssam } 1498179220Ssam } else { 1499179220Ssam if (IS_BCAST_PROBEREQ(wh)) 1500179220Ssam ni = NULL; /* spam bcast probe req to all vap's */ 1501179220Ssam else 1502179220Ssam ieee80211_ref_node(ni); 1503179220Ssam } 1504148863Ssam IEEE80211_NODE_UNLOCK(nt); 1505148863Ssam 1506148863Ssam return ni; 1507148863Ssam} 1508179220Ssam#undef IS_BCAST_PROBEREQ 1509179220Ssam#undef IS_PROBEREQ 1510170530Ssam#undef IS_BAR 1511138568Ssam#undef IS_PSPOLL 1512138568Ssam#undef IS_CTL 1513138568Ssam 1514138568Ssam/* 1515127772Ssam * Return a reference to the appropriate node for sending 1516127772Ssam * a data frame. This handles node discovery in adhoc networks. 1517127772Ssam */ 1518127772Ssamstruct ieee80211_node * 1519138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1520178354Ssamieee80211_find_txnode_debug(struct ieee80211vap *vap, 1521178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN], 1522138568Ssam const char *func, int line) 1523138568Ssam#else 1524178354Ssamieee80211_find_txnode(struct ieee80211vap *vap, 1525178354Ssam const uint8_t macaddr[IEEE80211_ADDR_LEN]) 1526138568Ssam#endif 1527127772Ssam{ 1528178354Ssam struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; 1529127772Ssam struct ieee80211_node *ni; 1530127772Ssam 1531127772Ssam /* 1532127772Ssam * The destination address should be in the node table 1533148863Ssam * unless this is a multicast/broadcast frame. We can 1534148863Ssam * also optimize station mode operation, all frames go 1535148863Ssam * to the bss node. 1536127772Ssam */ 1537127772Ssam /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ 1538138568Ssam IEEE80211_NODE_LOCK(nt); 1539178354Ssam if (vap->iv_opmode == IEEE80211_M_STA || 1540178354Ssam vap->iv_opmode == IEEE80211_M_WDS || 1541178354Ssam IEEE80211_IS_MULTICAST(macaddr)) 1542178354Ssam ni = ieee80211_ref_node(vap->iv_bss); 1543186099Ssam else 1544178354Ssam ni = ieee80211_find_node_locked(nt, macaddr); 1545138568Ssam IEEE80211_NODE_UNLOCK(nt); 1546138568Ssam 1547138568Ssam if (ni == NULL) { 1548178354Ssam if (vap->iv_opmode == IEEE80211_M_IBSS || 1549178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO) { 1550140497Ssam /* 1551140497Ssam * In adhoc mode cons up a node for the destination. 1552140497Ssam * Note that we need an additional reference for the 1553178354Ssam * caller to be consistent with 1554178354Ssam * ieee80211_find_node_locked. 1555140497Ssam */ 1556178354Ssam ni = ieee80211_fakeup_adhoc_node(vap, macaddr); 1557140497Ssam if (ni != NULL) 1558140497Ssam (void) ieee80211_ref_node(ni); 1559140497Ssam } else { 1560178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, 1561178354Ssam "no node, discard frame (%s)", __func__); 1562178354Ssam vap->iv_stats.is_tx_nonode++; 1563127772Ssam } 1564127772Ssam } 1565127772Ssam return ni; 1566127772Ssam} 1567127772Ssam 1568116742Ssamstatic void 1569138568Ssam_ieee80211_free_node(struct ieee80211_node *ni) 1570116742Ssam{ 1571138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1572119150Ssam 1573179641Ssam /* 1574179641Ssam * NB: careful about referencing the vap as it may be 1575179641Ssam * gone if the last reference was held by a driver. 1576179641Ssam * We know the com will always be present so it's safe 1577179641Ssam * to use ni_ic below to reclaim resources. 1578179641Ssam */ 1579179641Ssam#if 0 1580178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, 1581140766Ssam "%s %p<%s> in %s table\n", __func__, ni, 1582140766Ssam ether_sprintf(ni->ni_macaddr), 1583138568Ssam nt != NULL ? nt->nt_name : "<gone>"); 1584179641Ssam#endif 1585179641Ssam if (ni->ni_associd != 0) { 1586179641Ssam struct ieee80211vap *vap = ni->ni_vap; 1587179641Ssam if (vap->iv_aid_bitmap != NULL) 1588179641Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1589179641Ssam } 1590138568Ssam if (nt != NULL) { 1591138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1592138568Ssam LIST_REMOVE(ni, ni_hash); 1593138568Ssam } 1594179641Ssam ni->ni_ic->ic_node_free(ni); 1595116742Ssam} 1596116742Ssam 1597116742Ssamvoid 1598138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1599138568Ssamieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line) 1600138568Ssam#else 1601138568Ssamieee80211_free_node(struct ieee80211_node *ni) 1602138568Ssam#endif 1603116742Ssam{ 1604138568Ssam struct ieee80211_node_table *nt = ni->ni_table; 1605119150Ssam 1606138568Ssam#ifdef IEEE80211_DEBUG_REFCNT 1607178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1608140766Ssam "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, 1609138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1610138568Ssam#endif 1611148863Ssam if (nt != NULL) { 1612148863Ssam IEEE80211_NODE_LOCK(nt); 1613148863Ssam if (ieee80211_node_dectestref(ni)) { 1614148863Ssam /* 1615148863Ssam * Last reference, reclaim state. 1616148863Ssam */ 1617138568Ssam _ieee80211_free_node(ni); 1618148863Ssam } else if (ieee80211_node_refcnt(ni) == 1 && 1619148863Ssam nt->nt_keyixmap != NULL) { 1620148863Ssam ieee80211_keyix keyix; 1621148863Ssam /* 1622148863Ssam * Check for a last reference in the key mapping table. 1623148863Ssam */ 1624148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1625148863Ssam if (keyix < nt->nt_keyixmax && 1626148863Ssam nt->nt_keyixmap[keyix] == ni) { 1627178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1628178354Ssam IEEE80211_MSG_NODE, 1629148863Ssam "%s: %p<%s> clear key map entry", __func__, 1630148863Ssam ni, ether_sprintf(ni->ni_macaddr)); 1631148863Ssam nt->nt_keyixmap[keyix] = NULL; 1632148863Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1633148863Ssam _ieee80211_free_node(ni); 1634148863Ssam } 1635148863Ssam } 1636148863Ssam IEEE80211_NODE_UNLOCK(nt); 1637148863Ssam } else { 1638148863Ssam if (ieee80211_node_dectestref(ni)) 1639138568Ssam _ieee80211_free_node(ni); 1640116742Ssam } 1641116742Ssam} 1642116742Ssam 1643138568Ssam/* 1644148863Ssam * Reclaim a unicast key and clear any key cache state. 1645148863Ssam */ 1646148863Ssamint 1647148863Ssamieee80211_node_delucastkey(struct ieee80211_node *ni) 1648148863Ssam{ 1649179641Ssam struct ieee80211com *ic = ni->ni_ic; 1650179641Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1651148863Ssam struct ieee80211_node *nikey; 1652148863Ssam ieee80211_keyix keyix; 1653148863Ssam int isowned, status; 1654148863Ssam 1655148863Ssam /* 1656148863Ssam * NB: We must beware of LOR here; deleting the key 1657148863Ssam * can cause the crypto layer to block traffic updates 1658148863Ssam * which can generate a LOR against the node table lock; 1659148863Ssam * grab it here and stash the key index for our use below. 1660148863Ssam * 1661148863Ssam * Must also beware of recursion on the node table lock. 1662148863Ssam * When called from node_cleanup we may already have 1663148863Ssam * the node table lock held. Unfortunately there's no 1664148863Ssam * way to separate out this path so we must do this 1665148863Ssam * conditionally. 1666148863Ssam */ 1667148863Ssam isowned = IEEE80211_NODE_IS_LOCKED(nt); 1668148863Ssam if (!isowned) 1669148863Ssam IEEE80211_NODE_LOCK(nt); 1670179641Ssam nikey = NULL; 1671179641Ssam status = 1; /* NB: success */ 1672186144Ssam if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) { 1673179641Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1674179641Ssam status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); 1675179641Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { 1676179641Ssam nikey = nt->nt_keyixmap[keyix]; 1677179641Ssam nt->nt_keyixmap[keyix] = NULL;; 1678179641Ssam } 1679179641Ssam } 1680148863Ssam if (!isowned) 1681178354Ssam IEEE80211_NODE_UNLOCK(nt); 1682148863Ssam 1683148863Ssam if (nikey != NULL) { 1684148863Ssam KASSERT(nikey == ni, 1685148863Ssam ("key map out of sync, ni %p nikey %p", ni, nikey)); 1686179641Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1687148863Ssam "%s: delete key map entry %p<%s> refcnt %d\n", 1688148863Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1689148863Ssam ieee80211_node_refcnt(ni)-1); 1690148863Ssam ieee80211_free_node(ni); 1691148863Ssam } 1692148863Ssam return status; 1693148863Ssam} 1694148863Ssam 1695148863Ssam/* 1696138568Ssam * Reclaim a node. If this is the last reference count then 1697138568Ssam * do the normal free work. Otherwise remove it from the node 1698138568Ssam * table and mark it gone by clearing the back-reference. 1699138568Ssam */ 1700138568Ssamstatic void 1701138568Ssamnode_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 1702116742Ssam{ 1703148863Ssam ieee80211_keyix keyix; 1704138568Ssam 1705148863Ssam IEEE80211_NODE_LOCK_ASSERT(nt); 1706148863Ssam 1707178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1708140766Ssam "%s: remove %p<%s> from %s table, refcnt %d\n", 1709140766Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), 1710140766Ssam nt->nt_name, ieee80211_node_refcnt(ni)-1); 1711148863Ssam /* 1712148863Ssam * Clear any entry in the unicast key mapping table. 1713148863Ssam * We need to do it here so rx lookups don't find it 1714148863Ssam * in the mapping table even if it's not in the hash 1715148863Ssam * table. We cannot depend on the mapping table entry 1716148863Ssam * being cleared because the node may not be free'd. 1717148863Ssam */ 1718148863Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1719148863Ssam if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && 1720148863Ssam nt->nt_keyixmap[keyix] == ni) { 1721178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1722188494Ssam "%s: %p<%s> clear key map entry %u\n", 1723188494Ssam __func__, ni, ether_sprintf(ni->ni_macaddr), keyix); 1724148863Ssam nt->nt_keyixmap[keyix] = NULL; 1725148863Ssam ieee80211_node_decref(ni); /* NB: don't need free */ 1726148863Ssam } 1727138568Ssam if (!ieee80211_node_dectestref(ni)) { 1728138568Ssam /* 1729138568Ssam * Other references are present, just remove the 1730138568Ssam * node from the table so it cannot be found. When 1731138568Ssam * the references are dropped storage will be 1732140753Ssam * reclaimed. 1733138568Ssam */ 1734138568Ssam TAILQ_REMOVE(&nt->nt_node, ni, ni_list); 1735138568Ssam LIST_REMOVE(ni, ni_hash); 1736138568Ssam ni->ni_table = NULL; /* clear reference */ 1737138568Ssam } else 1738138568Ssam _ieee80211_free_node(ni); 1739138568Ssam} 1740138568Ssam 1741178354Ssam/* 1742178354Ssam * Reclaim a (bss) node. Decrement the refcnt and reclaim 1743178354Ssam * the node if the only other reference to it is in the sta 1744178354Ssam * table. This is effectively ieee80211_free_node followed 1745178354Ssam * by node_reclaim when the refcnt is 1 (after the free). 1746178354Ssam */ 1747138568Ssamstatic void 1748178354Ssamieee80211_node_reclaim(struct ieee80211_node *ni) 1749138568Ssam{ 1750178354Ssam struct ieee80211_node_table *nt = ni->ni_table; 1751116742Ssam 1752178354Ssam KASSERT(nt != NULL, ("reclaim node not in table")); 1753138568Ssam 1754178354Ssam#ifdef IEEE80211_DEBUG_REFCNT 1755178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, 1756178712Ssam "%s %p<%s> refcnt %d\n", __func__, ni, 1757178354Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); 1758178354Ssam#endif 1759178354Ssam IEEE80211_NODE_LOCK(nt); 1760178354Ssam if (ieee80211_node_dectestref(ni)) { 1761178354Ssam /* 1762178354Ssam * Last reference, reclaim state. 1763178354Ssam */ 1764178354Ssam _ieee80211_free_node(ni); 1765178354Ssam nt = NULL; 1766188494Ssam } else if (ieee80211_node_refcnt(ni) == 1 && nt->nt_keyixmap != NULL) { 1767178354Ssam ieee80211_keyix keyix; 1768178354Ssam /* 1769178354Ssam * Check for a last reference in the key mapping table. 1770178354Ssam */ 1771178354Ssam keyix = ni->ni_ucastkey.wk_rxkeyix; 1772178354Ssam if (keyix < nt->nt_keyixmax && 1773178354Ssam nt->nt_keyixmap[keyix] == ni) { 1774178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 1775178354Ssam IEEE80211_MSG_NODE, 1776188494Ssam "%s: %p<%s> clear key map entry %u", __func__, 1777188494Ssam ni, ether_sprintf(ni->ni_macaddr), keyix); 1778178354Ssam nt->nt_keyixmap[keyix] = NULL; 1779178354Ssam ieee80211_node_decref(ni); /* XXX needed? */ 1780178354Ssam _ieee80211_free_node(ni); 1781178354Ssam nt = NULL; 1782178354Ssam } 1783178354Ssam } 1784178354Ssam if (nt != NULL && ieee80211_node_refcnt(ni) == 1) { 1785178354Ssam /* 1786178354Ssam * Last reference is in the sta table; complete 1787178354Ssam * the reclaim. This handles bss nodes being 1788178354Ssam * recycled: the node has two references, one for 1789178354Ssam * iv_bss and one for the table. After dropping 1790178354Ssam * the iv_bss ref above we need to reclaim the sta 1791178354Ssam * table reference. 1792178354Ssam */ 1793178354Ssam ieee80211_node_decref(ni); /* NB: be pendantic */ 1794178354Ssam _ieee80211_free_node(ni); 1795178354Ssam } 1796178354Ssam IEEE80211_NODE_UNLOCK(nt); 1797178354Ssam} 1798178354Ssam 1799178354Ssam/* 1800178354Ssam * Node table support. 1801178354Ssam */ 1802178354Ssam 1803178354Ssamstatic void 1804178354Ssamieee80211_node_table_init(struct ieee80211com *ic, 1805178354Ssam struct ieee80211_node_table *nt, 1806178354Ssam const char *name, int inact, int keyixmax) 1807178354Ssam{ 1808178354Ssam struct ifnet *ifp = ic->ic_ifp; 1809178354Ssam 1810178354Ssam nt->nt_ic = ic; 1811178354Ssam IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname); 1812178354Ssam IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname); 1813178354Ssam TAILQ_INIT(&nt->nt_node); 1814178354Ssam nt->nt_name = name; 1815178354Ssam nt->nt_scangen = 1; 1816178354Ssam nt->nt_inact_init = inact; 1817178354Ssam nt->nt_keyixmax = keyixmax; 1818178354Ssam if (nt->nt_keyixmax > 0) { 1819186302Ssam nt->nt_keyixmap = (struct ieee80211_node **) malloc( 1820184210Sdes keyixmax * sizeof(struct ieee80211_node *), 1821178354Ssam M_80211_NODE, M_NOWAIT | M_ZERO); 1822178354Ssam if (nt->nt_keyixmap == NULL) 1823178354Ssam if_printf(ic->ic_ifp, 1824178354Ssam "Cannot allocate key index map with %u entries\n", 1825178354Ssam keyixmax); 1826178354Ssam } else 1827178354Ssam nt->nt_keyixmap = NULL; 1828178354Ssam} 1829178354Ssam 1830178354Ssamstatic void 1831178354Ssamieee80211_node_table_reset(struct ieee80211_node_table *nt, 1832178354Ssam struct ieee80211vap *match) 1833178354Ssam{ 1834178354Ssam struct ieee80211_node *ni, *next; 1835178354Ssam 1836178354Ssam IEEE80211_NODE_LOCK(nt); 1837178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { 1838178354Ssam if (match != NULL && ni->ni_vap != match) 1839178354Ssam continue; 1840178354Ssam /* XXX can this happen? if so need's work */ 1841138568Ssam if (ni->ni_associd != 0) { 1842178354Ssam struct ieee80211vap *vap = ni->ni_vap; 1843178354Ssam 1844178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 1845178354Ssam vap->iv_auth->ia_node_leave(ni); 1846178354Ssam if (vap->iv_aid_bitmap != NULL) 1847178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 1848138568Ssam } 1849178354Ssam ni->ni_wdsvap = NULL; /* clear reference */ 1850138568Ssam node_reclaim(nt, ni); 1851138568Ssam } 1852178354Ssam if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { 1853178354Ssam /* 1854178354Ssam * Make a separate pass to clear references to this vap 1855178354Ssam * held by DWDS entries. They will not be matched above 1856178354Ssam * because ni_vap will point to the ap vap but we still 1857178354Ssam * need to clear ni_wdsvap when the WDS vap is destroyed 1858178354Ssam * and/or reset. 1859178354Ssam */ 1860178354Ssam TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) 1861178354Ssam if (ni->ni_wdsvap == match) 1862178354Ssam ni->ni_wdsvap = NULL; 1863178354Ssam } 1864178354Ssam IEEE80211_NODE_UNLOCK(nt); 1865116742Ssam} 1866116742Ssam 1867178354Ssamstatic void 1868178354Ssamieee80211_node_table_cleanup(struct ieee80211_node_table *nt) 1869178354Ssam{ 1870178354Ssam ieee80211_node_table_reset(nt, NULL); 1871178354Ssam if (nt->nt_keyixmap != NULL) { 1872178354Ssam#ifdef DIAGNOSTIC 1873178354Ssam /* XXX verify all entries are NULL */ 1874178354Ssam int i; 1875178354Ssam for (i = 0; i < nt->nt_keyixmax; i++) 1876178354Ssam if (nt->nt_keyixmap[i] != NULL) 1877178354Ssam printf("%s: %s[%u] still active\n", __func__, 1878178354Ssam nt->nt_name, i); 1879178354Ssam#endif 1880186302Ssam free(nt->nt_keyixmap, M_80211_NODE); 1881178354Ssam nt->nt_keyixmap = NULL; 1882178354Ssam } 1883178354Ssam IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt); 1884178354Ssam IEEE80211_NODE_LOCK_DESTROY(nt); 1885178354Ssam} 1886178354Ssam 1887120483Ssam/* 1888138568Ssam * Timeout inactive stations and do related housekeeping. 1889138568Ssam * Note that we cannot hold the node lock while sending a 1890138568Ssam * frame as this would lead to a LOR. Instead we use a 1891138568Ssam * generation number to mark nodes that we've scanned and 1892138568Ssam * drop the lock and restart a scan if we have to time out 1893138568Ssam * a node. Since we are single-threaded by virtue of 1894120483Ssam * controlling the inactivity timer we can be sure this will 1895120483Ssam * process each node only once. 1896120483Ssam */ 1897138568Ssamstatic void 1898178354Ssamieee80211_timeout_stations(struct ieee80211com *ic) 1899116742Ssam{ 1900178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 1901178354Ssam struct ieee80211vap *vap; 1902120483Ssam struct ieee80211_node *ni; 1903178354Ssam int gen = 0; 1904116742Ssam 1905178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 1906154532Ssam gen = ++nt->nt_scangen; 1907120483Ssamrestart: 1908138568Ssam IEEE80211_NODE_LOCK(nt); 1909138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 1910120483Ssam if (ni->ni_scangen == gen) /* previously handled */ 1911120483Ssam continue; 1912120483Ssam ni->ni_scangen = gen; 1913138568Ssam /* 1914147788Ssam * Ignore entries for which have yet to receive an 1915147788Ssam * authentication frame. These are transient and 1916147788Ssam * will be reclaimed when the last reference to them 1917147788Ssam * goes away (when frame xmits complete). 1918147788Ssam */ 1919178354Ssam vap = ni->ni_vap; 1920178354Ssam /* 1921178354Ssam * Only process stations when in RUN state. This 1922178354Ssam * insures, for example, that we don't timeout an 1923178354Ssam * inactive station during CAC. Note that CSA state 1924178354Ssam * is actually handled in ieee80211_node_timeout as 1925178354Ssam * it applies to more than timeout processing. 1926178354Ssam */ 1927178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 1928178354Ssam continue; 1929178354Ssam /* XXX can vap be NULL? */ 1930178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 1931178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 1932148323Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 1933147788Ssam continue; 1934147788Ssam /* 1935138568Ssam * Free fragment if not needed anymore 1936138568Ssam * (last fragment older than 1s). 1937178354Ssam * XXX doesn't belong here, move to node_age 1938138568Ssam */ 1939138568Ssam if (ni->ni_rxfrag[0] != NULL && 1940138568Ssam ticks > ni->ni_rxfragstamp + hz) { 1941138568Ssam m_freem(ni->ni_rxfrag[0]); 1942138568Ssam ni->ni_rxfrag[0] = NULL; 1943138568Ssam } 1944184277Ssam if (ni->ni_inact > 0) { 1945172062Ssam ni->ni_inact--; 1946184277Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, 1947184277Ssam "%s: inact %u inact_reload %u nrates %u", 1948184277Ssam __func__, ni->ni_inact, ni->ni_inact_reload, 1949184277Ssam ni->ni_rates.rs_nrates); 1950184277Ssam } 1951140498Ssam /* 1952140498Ssam * Special case ourself; we may be idle for extended periods 1953140498Ssam * of time and regardless reclaiming our state is wrong. 1954178354Ssam * XXX run ic_node_age 1955140498Ssam */ 1956178354Ssam if (ni == vap->iv_bss) 1957140498Ssam continue; 1958178354Ssam if (ni->ni_associd != 0 || 1959178354Ssam (vap->iv_opmode == IEEE80211_M_IBSS || 1960178354Ssam vap->iv_opmode == IEEE80211_M_AHDEMO)) { 1961119150Ssam /* 1962178354Ssam * Age/drain resources held by the station. 1963138568Ssam */ 1964178354Ssam ic->ic_node_age(ni); 1965138568Ssam /* 1966138568Ssam * Probe the station before time it out. We 1967138568Ssam * send a null data frame which may not be 1968138568Ssam * universally supported by drivers (need it 1969138568Ssam * for ps-poll support so it should be...). 1970170530Ssam * 1971170530Ssam * XXX don't probe the station unless we've 1972170530Ssam * received a frame from them (and have 1973170530Ssam * some idea of the rates they are capable 1974170530Ssam * of); this will get fixed more properly 1975170530Ssam * soon with better handling of the rate set. 1976138568Ssam */ 1977178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 1978172062Ssam (0 < ni->ni_inact && 1979178354Ssam ni->ni_inact <= vap->iv_inact_probe) && 1980170530Ssam ni->ni_rates.rs_nrates != 0) { 1981178354Ssam IEEE80211_NOTE(vap, 1982148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, 1983148320Ssam ni, "%s", 1984148320Ssam "probe station due to inactivity"); 1985148582Ssam /* 1986148582Ssam * Grab a reference before unlocking the table 1987148582Ssam * so the node cannot be reclaimed before we 1988148582Ssam * send the frame. ieee80211_send_nulldata 1989148582Ssam * understands we've done this and reclaims the 1990148582Ssam * ref for us as needed. 1991148582Ssam */ 1992148582Ssam ieee80211_ref_node(ni); 1993138568Ssam IEEE80211_NODE_UNLOCK(nt); 1994148301Ssam ieee80211_send_nulldata(ni); 1995138568Ssam /* XXX stat? */ 1996138568Ssam goto restart; 1997138568Ssam } 1998138568Ssam } 1999178354Ssam if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && 2000172062Ssam ni->ni_inact <= 0) { 2001178354Ssam IEEE80211_NOTE(vap, 2002148320Ssam IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, 2003148320Ssam "station timed out due to inactivity " 2004148320Ssam "(refcnt %u)", ieee80211_node_refcnt(ni)); 2005138568Ssam /* 2006138568Ssam * Send a deauthenticate frame and drop the station. 2007138568Ssam * This is somewhat complicated due to reference counts 2008138568Ssam * and locking. At this point a station will typically 2009138568Ssam * have a reference count of 1. ieee80211_node_leave 2010138568Ssam * will do a "free" of the node which will drop the 2011138568Ssam * reference count. But in the meantime a reference 2012138568Ssam * wil be held by the deauth frame. The actual reclaim 2013138568Ssam * of the node will happen either after the tx is 2014138568Ssam * completed or by ieee80211_node_leave. 2015120483Ssam * 2016138568Ssam * Separately we must drop the node lock before sending 2017170530Ssam * in case the driver takes a lock, as this can result 2018170530Ssam * in a LOR between the node lock and the driver lock. 2019119150Ssam */ 2020172229Ssam ieee80211_ref_node(ni); 2021138568Ssam IEEE80211_NODE_UNLOCK(nt); 2022138568Ssam if (ni->ni_associd != 0) { 2023178354Ssam IEEE80211_SEND_MGMT(ni, 2024138568Ssam IEEE80211_FC0_SUBTYPE_DEAUTH, 2025138568Ssam IEEE80211_REASON_AUTH_EXPIRE); 2026138568Ssam } 2027178354Ssam ieee80211_node_leave(ni); 2028172229Ssam ieee80211_free_node(ni); 2029178354Ssam vap->iv_stats.is_node_timeout++; 2030120483Ssam goto restart; 2031120483Ssam } 2032116742Ssam } 2033138568Ssam IEEE80211_NODE_UNLOCK(nt); 2034138568Ssam 2035178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2036170530Ssam} 2037138568Ssam 2038178354Ssam/* 2039178354Ssam * Aggressively reclaim resources. This should be used 2040178354Ssam * only in a critical situation to reclaim mbuf resources. 2041178354Ssam */ 2042170530Ssamvoid 2043178354Ssamieee80211_drain(struct ieee80211com *ic) 2044178354Ssam{ 2045178354Ssam struct ieee80211_node_table *nt = &ic->ic_sta; 2046178354Ssam struct ieee80211vap *vap; 2047178354Ssam struct ieee80211_node *ni; 2048178354Ssam 2049178354Ssam IEEE80211_NODE_LOCK(nt); 2050178354Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2051178354Ssam /* 2052178354Ssam * Ignore entries for which have yet to receive an 2053178354Ssam * authentication frame. These are transient and 2054178354Ssam * will be reclaimed when the last reference to them 2055178354Ssam * goes away (when frame xmits complete). 2056178354Ssam */ 2057178354Ssam vap = ni->ni_vap; 2058178354Ssam /* 2059178354Ssam * Only process stations when in RUN state. This 2060178354Ssam * insures, for example, that we don't timeout an 2061178354Ssam * inactive station during CAC. Note that CSA state 2062178354Ssam * is actually handled in ieee80211_node_timeout as 2063178354Ssam * it applies to more than timeout processing. 2064178354Ssam */ 2065178354Ssam if (vap->iv_state != IEEE80211_S_RUN) 2066178354Ssam continue; 2067178354Ssam /* XXX can vap be NULL? */ 2068178354Ssam if ((vap->iv_opmode == IEEE80211_M_HOSTAP || 2069178354Ssam vap->iv_opmode == IEEE80211_M_STA) && 2070178354Ssam (ni->ni_flags & IEEE80211_NODE_AREF) == 0) 2071178354Ssam continue; 2072178354Ssam /* 2073178354Ssam * Free fragments. 2074178354Ssam * XXX doesn't belong here, move to node_drain 2075178354Ssam */ 2076178354Ssam if (ni->ni_rxfrag[0] != NULL) { 2077178354Ssam m_freem(ni->ni_rxfrag[0]); 2078178354Ssam ni->ni_rxfrag[0] = NULL; 2079178354Ssam } 2080178354Ssam /* 2081178354Ssam * Drain resources held by the station. 2082178354Ssam */ 2083178354Ssam ic->ic_node_drain(ni); 2084178354Ssam } 2085178354Ssam IEEE80211_NODE_UNLOCK(nt); 2086178354Ssam} 2087178354Ssam 2088178354Ssam/* 2089178354Ssam * Per-ieee80211com inactivity timer callback. 2090178354Ssam */ 2091178354Ssamvoid 2092170530Ssamieee80211_node_timeout(void *arg) 2093170530Ssam{ 2094170530Ssam struct ieee80211com *ic = arg; 2095170530Ssam 2096178354Ssam /* 2097178354Ssam * Defer timeout processing if a channel switch is pending. 2098178354Ssam * We typically need to be mute so not doing things that 2099178354Ssam * might generate frames is good to handle in one place. 2100178354Ssam * Supressing the station timeout processing may extend the 2101178354Ssam * lifetime of inactive stations (by not decrementing their 2102178354Ssam * idle counters) but this should be ok unless the CSA is 2103178354Ssam * active for an unusually long time. 2104178354Ssam */ 2105178354Ssam if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { 2106178354Ssam ieee80211_scan_timeout(ic); 2107178354Ssam ieee80211_timeout_stations(ic); 2108170530Ssam 2109178354Ssam IEEE80211_LOCK(ic); 2110178354Ssam ieee80211_erp_timeout(ic); 2111178354Ssam ieee80211_ht_timeout(ic); 2112178354Ssam IEEE80211_UNLOCK(ic); 2113178354Ssam } 2114170530Ssam callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, 2115170530Ssam ieee80211_node_timeout, ic); 2116116742Ssam} 2117116742Ssam 2118116742Ssamvoid 2119178354Ssamieee80211_iterate_nodes(struct ieee80211_node_table *nt, 2120178354Ssam ieee80211_iter_func *f, void *arg) 2121116742Ssam{ 2122116742Ssam struct ieee80211_node *ni; 2123138568Ssam u_int gen; 2124116742Ssam 2125178354Ssam IEEE80211_NODE_ITERATE_LOCK(nt); 2126154532Ssam gen = ++nt->nt_scangen; 2127138568Ssamrestart: 2128138568Ssam IEEE80211_NODE_LOCK(nt); 2129138568Ssam TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { 2130138568Ssam if (ni->ni_scangen != gen) { 2131138568Ssam ni->ni_scangen = gen; 2132138568Ssam (void) ieee80211_ref_node(ni); 2133138568Ssam IEEE80211_NODE_UNLOCK(nt); 2134138568Ssam (*f)(arg, ni); 2135138568Ssam ieee80211_free_node(ni); 2136138568Ssam goto restart; 2137138568Ssam } 2138138568Ssam } 2139138568Ssam IEEE80211_NODE_UNLOCK(nt); 2140138568Ssam 2141178354Ssam IEEE80211_NODE_ITERATE_UNLOCK(nt); 2142116742Ssam} 2143138568Ssam 2144138568Ssamvoid 2145138568Ssamieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni) 2146138568Ssam{ 2147138568Ssam printf("0x%p: mac %s refcnt %d\n", ni, 2148138568Ssam ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); 2149138568Ssam printf("\tscangen %u authmode %u flags 0x%x\n", 2150138568Ssam ni->ni_scangen, ni->ni_authmode, ni->ni_flags); 2151138568Ssam printf("\tassocid 0x%x txpower %u vlan %u\n", 2152138568Ssam ni->ni_associd, ni->ni_txpower, ni->ni_vlan); 2153138568Ssam printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", 2154167439Ssam ni->ni_txseqs[IEEE80211_NONQOS_TID], 2155167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, 2156167439Ssam ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, 2157138568Ssam ni->ni_rxfragstamp); 2158170530Ssam printf("\trstamp %u rssi %d noise %d intval %u capinfo 0x%x\n", 2159178354Ssam ni->ni_rstamp, node_getrssi(ni), ni->ni_noise, 2160170530Ssam ni->ni_intval, ni->ni_capinfo); 2161138568Ssam printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", 2162138568Ssam ether_sprintf(ni->ni_bssid), 2163138568Ssam ni->ni_esslen, ni->ni_essid, 2164138568Ssam ni->ni_chan->ic_freq, ni->ni_chan->ic_flags); 2165184277Ssam printf("\tinact %u inact_reload %u txrate %u\n", 2166184277Ssam ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate); 2167170530Ssam printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", 2168170530Ssam ni->ni_htcap, ni->ni_htparam, 2169170530Ssam ni->ni_htctlchan, ni->ni_ht2ndchan); 2170170530Ssam printf("\thtopmode %x htstbc %x chw %u\n", 2171170530Ssam ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw); 2172138568Ssam} 2173138568Ssam 2174138568Ssamvoid 2175138568Ssamieee80211_dump_nodes(struct ieee80211_node_table *nt) 2176138568Ssam{ 2177138568Ssam ieee80211_iterate_nodes(nt, 2178138568Ssam (ieee80211_iter_func *) ieee80211_dump_node, nt); 2179138568Ssam} 2180138568Ssam 2181179642Ssamstatic void 2182179642Ssamieee80211_notify_erp_locked(struct ieee80211com *ic) 2183172211Ssam{ 2184178354Ssam struct ieee80211vap *vap; 2185178354Ssam 2186178354Ssam IEEE80211_LOCK_ASSERT(ic); 2187178354Ssam 2188178354Ssam TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) 2189178354Ssam if (vap->iv_opmode == IEEE80211_M_HOSTAP) 2190178354Ssam ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); 2191172211Ssam} 2192172211Ssam 2193179642Ssamvoid 2194179642Ssamieee80211_notify_erp(struct ieee80211com *ic) 2195179642Ssam{ 2196179642Ssam IEEE80211_LOCK(ic); 2197179642Ssam ieee80211_notify_erp_locked(ic); 2198179642Ssam IEEE80211_UNLOCK(ic); 2199179642Ssam} 2200179642Ssam 2201138568Ssam/* 2202138568Ssam * Handle a station joining an 11g network. 2203138568Ssam */ 2204138568Ssamstatic void 2205178354Ssamieee80211_node_join_11g(struct ieee80211_node *ni) 2206138568Ssam{ 2207178354Ssam struct ieee80211com *ic = ni->ni_ic; 2208138568Ssam 2209173273Ssam IEEE80211_LOCK_ASSERT(ic); 2210173273Ssam 2211138568Ssam /* 2212138568Ssam * Station isn't capable of short slot time. Bump 2213138568Ssam * the count of long slot time stations and disable 2214138568Ssam * use of short slot time. Note that the actual switch 2215138568Ssam * over to long slot time use may not occur until the 2216138568Ssam * next beacon transmission (per sec. 7.3.1.4 of 11g). 2217138568Ssam */ 2218138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2219138568Ssam ic->ic_longslotsta++; 2220178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2221172211Ssam "station needs long slot time, count %d", 2222172211Ssam ic->ic_longslotsta); 2223138568Ssam /* XXX vap's w/ conflicting needs won't work */ 2224170530Ssam if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { 2225170530Ssam /* 2226170530Ssam * Don't force slot time when switched to turbo 2227170530Ssam * mode as non-ERP stations won't be present; this 2228170530Ssam * need only be done when on the normal G channel. 2229170530Ssam */ 2230170530Ssam ieee80211_set_shortslottime(ic, 0); 2231170530Ssam } 2232138568Ssam } 2233138568Ssam /* 2234138568Ssam * If the new station is not an ERP station 2235138568Ssam * then bump the counter and enable protection 2236138568Ssam * if configured. 2237138568Ssam */ 2238178354Ssam if (!ieee80211_iserp_rateset(&ni->ni_rates)) { 2239138568Ssam ic->ic_nonerpsta++; 2240178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2241172211Ssam "station is !ERP, %d non-ERP stations associated", 2242172211Ssam ic->ic_nonerpsta); 2243138568Ssam /* 2244138568Ssam * If station does not support short preamble 2245138568Ssam * then we must enable use of Barker preamble. 2246138568Ssam */ 2247138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { 2248178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2249172211Ssam "%s", "station needs long preamble"); 2250138568Ssam ic->ic_flags |= IEEE80211_F_USEBARKER; 2251138568Ssam ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE; 2252138568Ssam } 2253172211Ssam /* 2254178354Ssam * If protection is configured and this is the first 2255178354Ssam * indication we should use protection, enable it. 2256172211Ssam */ 2257172211Ssam if (ic->ic_protmode != IEEE80211_PROT_NONE && 2258172211Ssam ic->ic_nonerpsta == 1 && 2259172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2260178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2261172211Ssam "%s: enable use of protection\n", __func__); 2262172211Ssam ic->ic_flags |= IEEE80211_F_USEPROT; 2263179642Ssam ieee80211_notify_erp_locked(ic); 2264172211Ssam } 2265138568Ssam } else 2266138568Ssam ni->ni_flags |= IEEE80211_NODE_ERP; 2267138568Ssam} 2268138568Ssam 2269138568Ssamvoid 2270178354Ssamieee80211_node_join(struct ieee80211_node *ni, int resp) 2271138568Ssam{ 2272178354Ssam struct ieee80211com *ic = ni->ni_ic; 2273178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2274138568Ssam int newassoc; 2275138568Ssam 2276138568Ssam if (ni->ni_associd == 0) { 2277170530Ssam uint16_t aid; 2278138568Ssam 2279178354Ssam KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); 2280138568Ssam /* 2281138568Ssam * It would be good to search the bitmap 2282138568Ssam * more efficiently, but this will do for now. 2283138568Ssam */ 2284178354Ssam for (aid = 1; aid < vap->iv_max_aid; aid++) { 2285178354Ssam if (!IEEE80211_AID_ISSET(vap, aid)) 2286138568Ssam break; 2287138568Ssam } 2288178354Ssam if (aid >= vap->iv_max_aid) { 2289179640Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); 2290178354Ssam ieee80211_node_leave(ni); 2291138568Ssam return; 2292138568Ssam } 2293138568Ssam ni->ni_associd = aid | 0xc000; 2294173273Ssam ni->ni_jointime = time_uptime; 2295178354Ssam IEEE80211_LOCK(ic); 2296178354Ssam IEEE80211_AID_SET(vap, ni->ni_associd); 2297178354Ssam vap->iv_sta_assoc++; 2298138568Ssam ic->ic_sta_assoc++; 2299173273Ssam 2300173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2301173273Ssam ieee80211_ht_node_join(ni); 2302170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2303170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2304178354Ssam ieee80211_node_join_11g(ni); 2305173273Ssam IEEE80211_UNLOCK(ic); 2306173273Ssam 2307173273Ssam newassoc = 1; 2308138568Ssam } else 2309138568Ssam newassoc = 0; 2310138568Ssam 2311178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2312183256Ssam "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s", 2313139523Ssam IEEE80211_NODE_AID(ni), 2314139523Ssam ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", 2315139523Ssam ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", 2316139523Ssam ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "", 2317170530Ssam ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", 2318170530Ssam ni->ni_flags & IEEE80211_NODE_HT ? 2319182834Ssam (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "", 2320173273Ssam ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", 2321183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : 2322183255Ssam ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", 2323183256Ssam ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", 2324178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? 2325170530Ssam ", fast-frames" : "", 2326178354Ssam IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? 2327170530Ssam ", turbo" : "" 2328139523Ssam ); 2329138568Ssam 2330183251Ssam node_setuptxparms(ni); 2331138568Ssam /* give driver a chance to setup state like ni_txrate */ 2332139524Ssam if (ic->ic_newassoc != NULL) 2333148307Ssam ic->ic_newassoc(ni, newassoc); 2334178354Ssam IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); 2335138568Ssam /* tell the authenticator about new station */ 2336178354Ssam if (vap->iv_auth->ia_node_join != NULL) 2337178354Ssam vap->iv_auth->ia_node_join(ni); 2338178354Ssam ieee80211_notify_node_join(ni, 2339173866Ssam resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 2340138568Ssam} 2341138568Ssam 2342172211Ssamstatic void 2343172211Ssamdisable_protection(struct ieee80211com *ic) 2344172211Ssam{ 2345172211Ssam KASSERT(ic->ic_nonerpsta == 0 && 2346172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, 2347172211Ssam ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta, 2348172211Ssam ic->ic_flags_ext)); 2349172211Ssam 2350172211Ssam ic->ic_flags &= ~IEEE80211_F_USEPROT; 2351172211Ssam /* XXX verify mode? */ 2352172211Ssam if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { 2353172211Ssam ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 2354172211Ssam ic->ic_flags &= ~IEEE80211_F_USEBARKER; 2355172211Ssam } 2356179642Ssam ieee80211_notify_erp_locked(ic); 2357172211Ssam} 2358172211Ssam 2359138568Ssam/* 2360138568Ssam * Handle a station leaving an 11g network. 2361138568Ssam */ 2362138568Ssamstatic void 2363178354Ssamieee80211_node_leave_11g(struct ieee80211_node *ni) 2364138568Ssam{ 2365178354Ssam struct ieee80211com *ic = ni->ni_ic; 2366138568Ssam 2367173273Ssam IEEE80211_LOCK_ASSERT(ic); 2368173273Ssam 2369170530Ssam KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), 2370178354Ssam ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, 2371178354Ssam ic->ic_bsschan->ic_flags)); 2372138568Ssam 2373138568Ssam /* 2374138568Ssam * If a long slot station do the slot time bookkeeping. 2375138568Ssam */ 2376138568Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { 2377138568Ssam KASSERT(ic->ic_longslotsta > 0, 2378138568Ssam ("bogus long slot station count %d", ic->ic_longslotsta)); 2379138568Ssam ic->ic_longslotsta--; 2380178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2381172211Ssam "long slot time station leaves, count now %d", 2382172211Ssam ic->ic_longslotsta); 2383138568Ssam if (ic->ic_longslotsta == 0) { 2384138568Ssam /* 2385138568Ssam * Re-enable use of short slot time if supported 2386138568Ssam * and not operating in IBSS mode (per spec). 2387138568Ssam */ 2388138568Ssam if ((ic->ic_caps & IEEE80211_C_SHSLOT) && 2389138568Ssam ic->ic_opmode != IEEE80211_M_IBSS) { 2390178354Ssam IEEE80211_DPRINTF(ni->ni_vap, 2391178354Ssam IEEE80211_MSG_ASSOC, 2392138568Ssam "%s: re-enable use of short slot time\n", 2393138568Ssam __func__); 2394138568Ssam ieee80211_set_shortslottime(ic, 1); 2395138568Ssam } 2396138568Ssam } 2397138568Ssam } 2398138568Ssam /* 2399138568Ssam * If a non-ERP station do the protection-related bookkeeping. 2400138568Ssam */ 2401138568Ssam if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { 2402138568Ssam KASSERT(ic->ic_nonerpsta > 0, 2403138568Ssam ("bogus non-ERP station count %d", ic->ic_nonerpsta)); 2404138568Ssam ic->ic_nonerpsta--; 2405178354Ssam IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, 2406172211Ssam "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta, 2407172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ? 2408172211Ssam " (non-ERP sta present)" : ""); 2409172211Ssam if (ic->ic_nonerpsta == 0 && 2410172211Ssam (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { 2411178354Ssam IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, 2412138568Ssam "%s: disable use of protection\n", __func__); 2413172211Ssam disable_protection(ic); 2414138568Ssam } 2415138568Ssam } 2416138568Ssam} 2417138568Ssam 2418138568Ssam/* 2419172211Ssam * Time out presence of an overlapping bss with non-ERP 2420172211Ssam * stations. When operating in hostap mode we listen for 2421172211Ssam * beacons from other stations and if we identify a non-ERP 2422172211Ssam * station is present we enable protection. To identify 2423172211Ssam * when all non-ERP stations are gone we time out this 2424172211Ssam * condition. 2425172211Ssam */ 2426172211Ssamstatic void 2427172211Ssamieee80211_erp_timeout(struct ieee80211com *ic) 2428172211Ssam{ 2429172211Ssam 2430172211Ssam IEEE80211_LOCK_ASSERT(ic); 2431172211Ssam 2432172211Ssam if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) && 2433172211Ssam time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { 2434178354Ssam#if 0 2435178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, 2436178354Ssam "%s", "age out non-ERP sta present on channel"); 2437178354Ssam#endif 2438172211Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; 2439172211Ssam if (ic->ic_nonerpsta == 0) 2440172211Ssam disable_protection(ic); 2441172211Ssam } 2442172211Ssam} 2443172211Ssam 2444172211Ssam/* 2445138568Ssam * Handle bookkeeping for station deauthentication/disassociation 2446138568Ssam * when operating as an ap. 2447138568Ssam */ 2448138568Ssamvoid 2449178354Ssamieee80211_node_leave(struct ieee80211_node *ni) 2450138568Ssam{ 2451178354Ssam struct ieee80211com *ic = ni->ni_ic; 2452178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2453140499Ssam struct ieee80211_node_table *nt = ni->ni_table; 2454138568Ssam 2455178354Ssam IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, 2456172211Ssam "station with aid %d leaves", IEEE80211_NODE_AID(ni)); 2457138568Ssam 2458178354Ssam KASSERT(vap->iv_opmode != IEEE80211_M_STA, 2459178354Ssam ("unexpected operating mode %u", vap->iv_opmode)); 2460138568Ssam /* 2461138568Ssam * If node wasn't previously associated all 2462138568Ssam * we need to do is reclaim the reference. 2463138568Ssam */ 2464138568Ssam /* XXX ibss mode bypasses 11g and notification */ 2465138568Ssam if (ni->ni_associd == 0) 2466138568Ssam goto done; 2467138568Ssam /* 2468138568Ssam * Tell the authenticator the station is leaving. 2469138568Ssam * Note that we must do this before yanking the 2470138568Ssam * association id as the authenticator uses the 2471138568Ssam * associd to locate it's state block. 2472138568Ssam */ 2473178354Ssam if (vap->iv_auth->ia_node_leave != NULL) 2474178354Ssam vap->iv_auth->ia_node_leave(ni); 2475173273Ssam 2476173273Ssam IEEE80211_LOCK(ic); 2477178354Ssam IEEE80211_AID_CLR(vap, ni->ni_associd); 2478138568Ssam ni->ni_associd = 0; 2479178354Ssam vap->iv_sta_assoc--; 2480138568Ssam ic->ic_sta_assoc--; 2481138568Ssam 2482173273Ssam if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) 2483173273Ssam ieee80211_ht_node_leave(ni); 2484170530Ssam if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && 2485170530Ssam IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) 2486178354Ssam ieee80211_node_leave_11g(ni); 2487173273Ssam IEEE80211_UNLOCK(ic); 2488138568Ssam /* 2489138568Ssam * Cleanup station state. In particular clear various 2490138568Ssam * state that might otherwise be reused if the node 2491138568Ssam * is reused before the reference count goes to zero 2492138568Ssam * (and memory is reclaimed). 2493138568Ssam */ 2494178354Ssam ieee80211_sta_leave(ni); 2495138568Ssamdone: 2496140499Ssam /* 2497140499Ssam * Remove the node from any table it's recorded in and 2498140499Ssam * drop the caller's reference. Removal from the table 2499140499Ssam * is important to insure the node is not reprocessed 2500140499Ssam * for inactivity. 2501140499Ssam */ 2502140499Ssam if (nt != NULL) { 2503140499Ssam IEEE80211_NODE_LOCK(nt); 2504140499Ssam node_reclaim(nt, ni); 2505140499Ssam IEEE80211_NODE_UNLOCK(nt); 2506140499Ssam } else 2507140499Ssam ieee80211_free_node(ni); 2508138568Ssam} 2509138568Ssam 2510178354Ssamstruct rssiinfo { 2511178354Ssam struct ieee80211vap *vap; 2512178354Ssam int rssi_samples; 2513178354Ssam uint32_t rssi_total; 2514178354Ssam}; 2515178354Ssam 2516178354Ssamstatic void 2517178354Ssamget_hostap_rssi(void *arg, struct ieee80211_node *ni) 2518178354Ssam{ 2519178354Ssam struct rssiinfo *info = arg; 2520178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2521178354Ssam int8_t rssi; 2522178354Ssam 2523178354Ssam if (info->vap != vap) 2524178354Ssam return; 2525178354Ssam /* only associated stations */ 2526178354Ssam if (ni->ni_associd == 0) 2527178354Ssam return; 2528178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2529178354Ssam if (rssi != 0) { 2530178354Ssam info->rssi_samples++; 2531178354Ssam info->rssi_total += rssi; 2532178354Ssam } 2533178354Ssam} 2534178354Ssam 2535178354Ssamstatic void 2536178354Ssamget_adhoc_rssi(void *arg, struct ieee80211_node *ni) 2537178354Ssam{ 2538178354Ssam struct rssiinfo *info = arg; 2539178354Ssam struct ieee80211vap *vap = ni->ni_vap; 2540178354Ssam int8_t rssi; 2541178354Ssam 2542178354Ssam if (info->vap != vap) 2543178354Ssam return; 2544178354Ssam /* only neighbors */ 2545178354Ssam /* XXX check bssid */ 2546178354Ssam if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 2547178354Ssam return; 2548178354Ssam rssi = vap->iv_ic->ic_node_getrssi(ni); 2549178354Ssam if (rssi != 0) { 2550178354Ssam info->rssi_samples++; 2551178354Ssam info->rssi_total += rssi; 2552178354Ssam } 2553178354Ssam} 2554178354Ssam 2555170530Ssamint8_t 2556178354Ssamieee80211_getrssi(struct ieee80211vap *vap) 2557138568Ssam{ 2558138568Ssam#define NZ(x) ((x) == 0 ? 1 : (x)) 2559178354Ssam struct ieee80211com *ic = vap->iv_ic; 2560178354Ssam struct rssiinfo info; 2561138568Ssam 2562178354Ssam info.rssi_total = 0; 2563178354Ssam info.rssi_samples = 0; 2564178354Ssam info.vap = vap; 2565178354Ssam switch (vap->iv_opmode) { 2566138568Ssam case IEEE80211_M_IBSS: /* average of all ibss neighbors */ 2567138568Ssam case IEEE80211_M_AHDEMO: /* average of all neighbors */ 2568178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info); 2569178354Ssam break; 2570138568Ssam case IEEE80211_M_HOSTAP: /* average of all associated stations */ 2571178354Ssam ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info); 2572138568Ssam break; 2573138568Ssam case IEEE80211_M_MONITOR: /* XXX */ 2574138568Ssam case IEEE80211_M_STA: /* use stats from associated ap */ 2575138568Ssam default: 2576178354Ssam if (vap->iv_bss != NULL) 2577178354Ssam info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); 2578178354Ssam info.rssi_samples = 1; 2579138568Ssam break; 2580138568Ssam } 2581178354Ssam return info.rssi_total / NZ(info.rssi_samples); 2582138568Ssam#undef NZ 2583138568Ssam} 2584138568Ssam 2585170530Ssamvoid 2586178354Ssamieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) 2587138568Ssam{ 2588138568Ssam 2589178354Ssam if (vap->iv_bss == NULL) /* NB: shouldn't happen */ 2590170530Ssam return; 2591178354Ssam vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); 2592170530Ssam /* for non-station mode return avg'd rssi accounting */ 2593178354Ssam if (vap->iv_opmode != IEEE80211_M_STA) 2594178354Ssam *rssi = ieee80211_getrssi(vap); 2595138568Ssam} 2596