2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
38 #include <sys/socket.h>
41 #include <net/if_media.h>
42 #include <net/ethernet.h>
44 #include <net80211/ieee80211_var.h>
45 #include <net80211/ieee80211_input.h>
46 #ifdef IEEE80211_SUPPORT_SUPERG
47 #include <net80211/ieee80211_superg.h>
49 #ifdef IEEE80211_SUPPORT_TDMA
50 #include <net80211/ieee80211_tdma.h>
52 #include <net80211/ieee80211_wds.h>
53 #include <net80211/ieee80211_mesh.h>
54 #include <net80211/ieee80211_ratectl.h>
59 * IEEE80211_NODE_HASHSIZE must be a power of 2.
61 CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0);
64 * Association id's are managed with a bit vector.
66 #define IEEE80211_AID_SET(_vap, b) \
67 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \
68 (1 << (IEEE80211_AID(b) % 32)))
69 #define IEEE80211_AID_CLR(_vap, b) \
70 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \
71 ~(1 << (IEEE80211_AID(b) % 32)))
72 #define IEEE80211_AID_ISSET(_vap, b) \
73 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32)))
75 #ifdef IEEE80211_DEBUG_REFCNT
76 #define REFCNT_LOC "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line
78 #define REFCNT_LOC "%s %p<%s> refcnt %d\n", __func__
81 static int ieee80211_sta_join1(struct ieee80211_node *);
83 static struct ieee80211_node *node_alloc(struct ieee80211vap *,
84 const uint8_t [IEEE80211_ADDR_LEN]);
85 static void node_cleanup(struct ieee80211_node *);
86 static void node_free(struct ieee80211_node *);
87 static void node_age(struct ieee80211_node *);
88 static int8_t node_getrssi(const struct ieee80211_node *);
89 static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *);
90 static void node_getmimoinfo(const struct ieee80211_node *,
91 struct ieee80211_mimo_info *);
93 static void _ieee80211_free_node(struct ieee80211_node *);
95 static void ieee80211_node_table_init(struct ieee80211com *ic,
96 struct ieee80211_node_table *nt, const char *name,
97 int inact, int keymaxix);
98 static void ieee80211_node_table_reset(struct ieee80211_node_table *,
99 struct ieee80211vap *);
100 static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
101 static void ieee80211_erp_timeout(struct ieee80211com *);
103 MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
104 MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
107 ieee80211_node_attach(struct ieee80211com *ic)
109 /* XXX really want maxlen enforced per-sta */
110 ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
112 ieee80211_node_table_init(ic, &ic->ic_sta, "station",
113 IEEE80211_INACT_INIT, ic->ic_max_keyix);
114 callout_init(&ic->ic_inact, CALLOUT_MPSAFE);
115 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
116 ieee80211_node_timeout, ic);
118 ic->ic_node_alloc = node_alloc;
119 ic->ic_node_free = node_free;
120 ic->ic_node_cleanup = node_cleanup;
121 ic->ic_node_age = node_age;
122 ic->ic_node_drain = node_age; /* NB: same as age */
123 ic->ic_node_getrssi = node_getrssi;
124 ic->ic_node_getsignal = node_getsignal;
125 ic->ic_node_getmimoinfo = node_getmimoinfo;
128 * Set flags to be propagated to all vap's;
129 * these define default behaviour/configuration.
131 ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
135 ieee80211_node_detach(struct ieee80211com *ic)
138 callout_drain(&ic->ic_inact);
139 ieee80211_node_table_cleanup(&ic->ic_sta);
140 ieee80211_ageq_cleanup(&ic->ic_stageq);
144 ieee80211_node_vattach(struct ieee80211vap *vap)
146 /* NB: driver can override */
147 vap->iv_max_aid = IEEE80211_AID_DEF;
149 /* default station inactivity timer setings */
150 vap->iv_inact_init = IEEE80211_INACT_INIT;
151 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
152 vap->iv_inact_run = IEEE80211_INACT_RUN;
153 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
155 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
156 "%s: init %u auth %u run %u probe %u\n", __func__,
157 vap->iv_inact_init, vap->iv_inact_auth,
158 vap->iv_inact_run, vap->iv_inact_probe);
162 ieee80211_node_latevattach(struct ieee80211vap *vap)
164 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
165 /* XXX should we allow max aid to be zero? */
166 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
167 vap->iv_max_aid = IEEE80211_AID_MIN;
168 if_printf(vap->iv_ifp,
169 "WARNING: max aid too small, changed to %d\n",
172 vap->iv_aid_bitmap = (uint32_t *) malloc(
173 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
174 M_80211_NODE, M_NOWAIT | M_ZERO);
175 if (vap->iv_aid_bitmap == NULL) {
176 /* XXX no way to recover */
177 printf("%s: no memory for AID bitmap, max aid %d!\n",
178 __func__, vap->iv_max_aid);
183 ieee80211_reset_bss(vap);
185 vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
189 ieee80211_node_vdetach(struct ieee80211vap *vap)
191 struct ieee80211com *ic = vap->iv_ic;
193 ieee80211_node_table_reset(&ic->ic_sta, vap);
194 if (vap->iv_bss != NULL) {
195 ieee80211_free_node(vap->iv_bss);
198 if (vap->iv_aid_bitmap != NULL) {
199 free(vap->iv_aid_bitmap, M_80211_NODE);
200 vap->iv_aid_bitmap = NULL;
205 * Port authorize/unauthorize interfaces for use by an authenticator.
209 ieee80211_node_authorize(struct ieee80211_node *ni)
211 struct ieee80211vap *vap = ni->ni_vap;
213 ni->ni_flags |= IEEE80211_NODE_AUTH;
214 ni->ni_inact_reload = vap->iv_inact_run;
215 ni->ni_inact = ni->ni_inact_reload;
217 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
218 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
222 ieee80211_node_unauthorize(struct ieee80211_node *ni)
224 struct ieee80211vap *vap = ni->ni_vap;
226 ni->ni_flags &= ~IEEE80211_NODE_AUTH;
227 ni->ni_inact_reload = vap->iv_inact_auth;
228 if (ni->ni_inact > ni->ni_inact_reload)
229 ni->ni_inact = ni->ni_inact_reload;
231 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
232 "%s: inact_reload %u inact %u", __func__,
233 ni->ni_inact_reload, ni->ni_inact);
237 * Fix tx parameters for a node according to ``association state''.
240 ieee80211_node_setuptxparms(struct ieee80211_node *ni)
242 struct ieee80211vap *vap = ni->ni_vap;
243 enum ieee80211_phymode mode;
245 if (ni->ni_flags & IEEE80211_NODE_HT) {
246 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
247 mode = IEEE80211_MODE_11NA;
249 mode = IEEE80211_MODE_11NG;
250 } else { /* legacy rate handling */
251 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
252 mode = IEEE80211_MODE_STURBO_A;
253 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
254 mode = IEEE80211_MODE_HALF;
255 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
256 mode = IEEE80211_MODE_QUARTER;
257 /* NB: 108A should be handled as 11a */
258 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
259 mode = IEEE80211_MODE_11A;
260 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
261 (ni->ni_flags & IEEE80211_NODE_ERP))
262 mode = IEEE80211_MODE_11G;
264 mode = IEEE80211_MODE_11B;
266 ni->ni_txparms = &vap->iv_txparms[mode];
270 * Set/change the channel. The rate set is also updated as
271 * to insure a consistent view by drivers.
272 * XXX should be private but hostap needs it to deal with CSA
275 ieee80211_node_set_chan(struct ieee80211_node *ni,
276 struct ieee80211_channel *chan)
278 struct ieee80211com *ic = ni->ni_ic;
279 struct ieee80211vap *vap = ni->ni_vap;
280 enum ieee80211_phymode mode;
282 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
285 mode = ieee80211_chan2mode(chan);
286 if (IEEE80211_IS_CHAN_HT(chan)) {
288 * We must install the legacy rate est in ni_rates and the
289 * HT rate set in ni_htrates.
291 ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
293 * Setup bss tx parameters based on operating mode. We
294 * use legacy rates when operating in a mixed HT+non-HT bss
295 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
297 if (mode == IEEE80211_MODE_11NA &&
298 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
299 mode = IEEE80211_MODE_11A;
300 else if (mode == IEEE80211_MODE_11NG &&
301 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
302 mode = IEEE80211_MODE_11G;
303 if (mode == IEEE80211_MODE_11G &&
304 (vap->iv_flags & IEEE80211_F_PUREG) == 0)
305 mode = IEEE80211_MODE_11B;
307 ni->ni_txparms = &vap->iv_txparms[mode];
308 ni->ni_rates = *ieee80211_get_suprates(ic, chan);
312 copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
314 /* propagate useful state */
315 nbss->ni_authmode = obss->ni_authmode;
316 nbss->ni_txpower = obss->ni_txpower;
317 nbss->ni_vlan = obss->ni_vlan;
318 /* XXX statistics? */
319 /* XXX legacy WDS bssid? */
323 ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
325 struct ieee80211com *ic = vap->iv_ic;
326 struct ieee80211_node *ni;
328 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
329 "%s: creating %s on channel %u\n", __func__,
330 ieee80211_opmode_name[vap->iv_opmode],
331 ieee80211_chan2ieee(ic, chan));
333 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
338 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
339 ni->ni_esslen = vap->iv_des_ssid[0].len;
340 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
341 if (vap->iv_bss != NULL)
342 copy_bss(ni, vap->iv_bss);
343 ni->ni_intval = ic->ic_bintval;
344 if (vap->iv_flags & IEEE80211_F_PRIVACY)
345 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
346 if (ic->ic_phytype == IEEE80211_T_FH) {
347 ni->ni_fhdwell = 200; /* XXX */
350 if (vap->iv_opmode == IEEE80211_M_IBSS) {
351 vap->iv_flags |= IEEE80211_F_SIBSS;
352 ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
353 if (vap->iv_flags & IEEE80211_F_DESBSSID)
354 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
356 get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
357 /* clear group bit, add local bit */
358 ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
360 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
361 if (vap->iv_flags & IEEE80211_F_DESBSSID)
362 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
364 #ifdef IEEE80211_SUPPORT_TDMA
365 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
367 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
368 #ifdef IEEE80211_SUPPORT_MESH
369 } else if (vap->iv_opmode == IEEE80211_M_MBSS) {
370 ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
371 memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
375 * Fix the channel and related attributes.
377 /* clear DFS CAC state on previous channel */
378 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
379 ic->ic_bsschan->ic_freq != chan->ic_freq &&
380 IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
381 ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
382 ic->ic_bsschan = chan;
383 ieee80211_node_set_chan(ni, chan);
384 ic->ic_curmode = ieee80211_chan2mode(chan);
386 * Do mode-specific setup.
388 if (IEEE80211_IS_CHAN_FULL(chan)) {
389 if (IEEE80211_IS_CHAN_ANYG(chan)) {
391 * Use a mixed 11b/11g basic rate set.
393 ieee80211_setbasicrates(&ni->ni_rates,
395 if (vap->iv_flags & IEEE80211_F_PUREG) {
397 * Also mark OFDM rates basic so 11b
398 * stations do not join (WiFi compliance).
400 ieee80211_addbasicrates(&ni->ni_rates,
403 } else if (IEEE80211_IS_CHAN_B(chan)) {
405 * Force pure 11b rate set.
407 ieee80211_setbasicrates(&ni->ni_rates,
412 (void) ieee80211_sta_join1(ieee80211_ref_node(ni));
416 * Reset bss state on transition to the INIT state.
417 * Clear any stations from the table (they have been
418 * deauth'd) and reset the bss node (clears key, rate
422 ieee80211_reset_bss(struct ieee80211vap *vap)
424 struct ieee80211com *ic = vap->iv_ic;
425 struct ieee80211_node *ni, *obss;
427 ieee80211_node_table_reset(&ic->ic_sta, vap);
428 /* XXX multi-bss: wrong */
429 ieee80211_reset_erp(ic);
431 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
432 KASSERT(ni != NULL, ("unable to setup initial BSS node"));
434 vap->iv_bss = ieee80211_ref_node(ni);
437 ni->ni_intval = ic->ic_bintval;
438 ieee80211_free_node(obss);
440 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
444 match_ssid(const struct ieee80211_node *ni,
445 int nssid, const struct ieee80211_scan_ssid ssids[])
449 for (i = 0; i < nssid; i++) {
450 if (ni->ni_esslen == ssids[i].len &&
451 memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
458 * Test a node for suitability/compatibility.
461 check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
463 struct ieee80211com *ic = ni->ni_ic;
466 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
468 if (vap->iv_opmode == IEEE80211_M_IBSS) {
469 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
472 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
475 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
476 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
479 /* XXX does this mean privacy is supported or required? */
480 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
483 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
484 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
485 if (rate & IEEE80211_RATE_BASIC)
487 if (vap->iv_des_nssid != 0 &&
488 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
490 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
491 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
496 #ifdef IEEE80211_DEBUG
498 * Display node suitability/compatibility.
501 check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
503 struct ieee80211com *ic = ni->ni_ic;
508 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
510 if (vap->iv_opmode == IEEE80211_M_IBSS) {
511 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
514 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
517 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
518 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
521 /* XXX does this mean privacy is supported or required? */
522 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
525 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
526 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
527 if (rate & IEEE80211_RATE_BASIC)
529 if (vap->iv_des_nssid != 0 &&
530 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
532 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
533 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
536 printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
537 printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
539 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
540 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
541 fail & 0x08 ? '!' : ' ');
543 (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
544 (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
546 fail & 0x02 ? '!' : ' ');
548 (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
549 fail & 0x04 ? '!' : ' ');
550 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
551 printf("%s\n", fail & 0x10 ? "!" : "");
553 #endif /* IEEE80211_DEBUG */
556 * Handle 802.11 ad hoc network merge. The
557 * convention, set by the Wireless Ethernet Compatibility Alliance
558 * (WECA), is that an 802.11 station will change its BSSID to match
559 * the "oldest" 802.11 ad hoc network, on the same channel, that
560 * has the station's desired SSID. The "oldest" 802.11 network
561 * sends beacons with the greatest TSF timestamp.
563 * The caller is assumed to validate TSF's before attempting a merge.
565 * Return !0 if the BSSID changed, 0 otherwise.
568 ieee80211_ibss_merge(struct ieee80211_node *ni)
570 struct ieee80211vap *vap = ni->ni_vap;
571 #ifdef IEEE80211_DEBUG
572 struct ieee80211com *ic = ni->ni_ic;
575 if (ni == vap->iv_bss ||
576 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
577 /* unchanged, nothing to do */
580 if (!check_bss(vap, ni)) {
581 /* capabilities mismatch */
582 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
583 "%s: merge failed, capabilities mismatch\n", __func__);
584 #ifdef IEEE80211_DEBUG
585 if (ieee80211_msg_assoc(vap))
586 check_bss_debug(vap, ni);
588 vap->iv_stats.is_ibss_capmismatch++;
591 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
592 "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
593 ether_sprintf(ni->ni_bssid),
594 ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
595 ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
596 ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : ""
598 return ieee80211_sta_join1(ieee80211_ref_node(ni));
602 * Calculate HT channel promotion flags for all vaps.
603 * This assumes ni_chan have been setup for each vap.
606 gethtadjustflags(struct ieee80211com *ic)
608 struct ieee80211vap *vap;
613 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
614 if (vap->iv_state < IEEE80211_S_RUN)
616 switch (vap->iv_opmode) {
617 case IEEE80211_M_WDS:
618 case IEEE80211_M_STA:
619 case IEEE80211_M_AHDEMO:
620 case IEEE80211_M_HOSTAP:
621 case IEEE80211_M_IBSS:
622 case IEEE80211_M_MBSS:
623 flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
633 * Check if the current channel needs to change based on whether
634 * any vap's are using HT20/HT40. This is used to sync the state
635 * of ic_curchan after a channel width change on a running vap.
638 ieee80211_sync_curchan(struct ieee80211com *ic)
640 struct ieee80211_channel *c;
642 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
643 if (c != ic->ic_curchan) {
645 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
646 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
647 IEEE80211_UNLOCK(ic);
648 ic->ic_set_channel(ic);
649 ieee80211_radiotap_chan_change(ic);
655 * Setup the current channel. The request channel may be
656 * promoted if other vap's are operating with HT20/HT40.
659 ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
661 if (ic->ic_htcaps & IEEE80211_HTC_HT) {
662 int flags = gethtadjustflags(ic);
664 * Check for channel promotion required to support the
665 * set of running vap's. This assumes we are called
666 * after ni_chan is setup for each vap.
668 /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
669 if (flags > ieee80211_htchanflags(c))
670 c = ieee80211_ht_adjust_channel(ic, c, flags);
672 ic->ic_bsschan = ic->ic_curchan = c;
673 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
674 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
678 * Change the current channel. The channel change is guaranteed to have
679 * happened before the next state change.
682 ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
684 ieee80211_setupcurchan(ic, c);
685 ieee80211_runtask(ic, &ic->ic_chan_task);
689 ieee80211_update_chw(struct ieee80211com *ic)
692 ieee80211_setupcurchan(ic, ic->ic_curchan);
693 ieee80211_runtask(ic, &ic->ic_chw_task);
697 * Join the specified IBSS/BSS network. The node is assumed to
698 * be passed in with a held reference.
701 ieee80211_sta_join1(struct ieee80211_node *selbs)
703 struct ieee80211vap *vap = selbs->ni_vap;
704 struct ieee80211com *ic = selbs->ni_ic;
705 struct ieee80211_node *obss;
709 * Committed to selbs, setup state.
713 * Check if old+new node have the same address in which
714 * case we can reassociate when operating in sta mode.
716 canreassoc = (obss != NULL &&
717 vap->iv_state == IEEE80211_S_RUN &&
718 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
719 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
721 copy_bss(selbs, obss);
722 ieee80211_node_decref(obss); /* iv_bss reference */
723 ieee80211_free_node(obss); /* station table reference */
724 obss = NULL; /* NB: guard against later use */
728 * Delete unusable rates; we've already checked
729 * that the negotiated rate set is acceptable.
731 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
732 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
734 ieee80211_setcurchan(ic, selbs->ni_chan);
736 * Set the erp state (mostly the slot time) to deal with
737 * the auto-select case; this should be redundant if the
740 ieee80211_reset_erp(ic);
741 ieee80211_wme_initparams(vap);
743 if (vap->iv_opmode == IEEE80211_M_STA) {
746 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
749 * Act as if we received a DEAUTH frame in case we
750 * are invoked from the RUN state. This will cause
751 * us to try to re-authenticate if we are operating
754 ieee80211_new_state(vap, IEEE80211_S_AUTH,
755 IEEE80211_FC0_SUBTYPE_DEAUTH);
758 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
763 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
764 const struct ieee80211_scan_entry *se)
766 struct ieee80211com *ic = vap->iv_ic;
767 struct ieee80211_node *ni;
769 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
776 * Expand scan state into node's format.
777 * XXX may not need all this stuff
779 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
780 ni->ni_esslen = se->se_ssid[1];
781 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
782 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
783 ni->ni_intval = se->se_intval;
784 ni->ni_capinfo = se->se_capinfo;
786 ni->ni_timoff = se->se_timoff;
787 ni->ni_fhdwell = se->se_fhdwell;
788 ni->ni_fhindex = se->se_fhindex;
789 ni->ni_erp = se->se_erp;
790 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
791 ni->ni_noise = se->se_noise;
792 if (vap->iv_opmode == IEEE80211_M_STA) {
793 /* NB: only infrastructure mode requires an associd */
794 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
797 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
798 ieee80211_ies_expand(&ni->ni_ies);
799 #ifdef IEEE80211_SUPPORT_SUPERG
800 if (ni->ni_ies.ath_ie != NULL)
801 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
803 if (ni->ni_ies.htcap_ie != NULL)
804 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
805 if (ni->ni_ies.htinfo_ie != NULL)
806 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
807 #ifdef IEEE80211_SUPPORT_MESH
808 if (ni->ni_ies.meshid_ie != NULL)
809 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
811 #ifdef IEEE80211_SUPPORT_TDMA
812 if (ni->ni_ies.tdma_ie != NULL)
813 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
817 vap->iv_dtim_period = se->se_dtimperiod;
818 vap->iv_dtim_count = 0;
820 /* NB: must be after ni_chan is setup */
821 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
823 if (ieee80211_iserp_rateset(&ni->ni_rates))
824 ni->ni_flags |= IEEE80211_NODE_ERP;
827 * Setup HT state for this node if it's available, otherwise
828 * non-STA modes won't pick this state up.
830 * For IBSS and related modes that don't go through an
831 * association request/response, the only appropriate place
832 * to setup the HT state is here.
834 if (ni->ni_ies.htinfo_ie != NULL &&
835 ni->ni_ies.htcap_ie != NULL &&
836 vap->iv_flags_ht & IEEE80211_FHT_HT) {
837 ieee80211_ht_node_init(ni);
838 ieee80211_ht_updateparams(ni,
840 ni->ni_ies.htinfo_ie);
841 ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
842 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
843 ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
845 /* XXX else check for ath FF? */
846 /* XXX QoS? Difficult given that WME config is specific to a master */
848 ieee80211_node_setuptxparms(ni);
849 ieee80211_ratectl_node_init(ni);
851 return ieee80211_sta_join1(ieee80211_ref_node(ni));
855 * Leave the specified IBSS/BSS network. The node is assumed to
856 * be passed in with a held reference.
859 ieee80211_sta_leave(struct ieee80211_node *ni)
861 struct ieee80211com *ic = ni->ni_ic;
863 ic->ic_node_cleanup(ni);
864 ieee80211_notify_node_leave(ni);
868 * Send a deauthenticate frame and drop the station.
871 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
873 /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */
874 ieee80211_ref_node(ni);
875 if (ni->ni_associd != 0)
876 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
877 ieee80211_node_leave(ni);
878 ieee80211_free_node(ni);
881 static struct ieee80211_node *
882 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
884 struct ieee80211_node *ni;
886 ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node),
887 M_80211_NODE, M_NOWAIT | M_ZERO);
892 * Initialize an ie blob with the specified data. If previous
893 * data exists re-use the data block. As a side effect we clear
894 * all references to specific ie's; the caller is required to
898 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
900 /* NB: assumes data+len are the last fields */
901 memset(ies, 0, offsetof(struct ieee80211_ies, data));
902 if (ies->data != NULL && ies->len != len) {
903 /* data size changed */
904 free(ies->data, M_80211_NODE_IE);
907 if (ies->data == NULL) {
908 ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT);
909 if (ies->data == NULL) {
911 /* NB: pointers have already been zero'd above */
915 memcpy(ies->data, data, len);
921 * Reclaim storage for an ie blob.
924 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
926 if (ies->data != NULL)
927 free(ies->data, M_80211_NODE_IE);
931 * Expand an ie blob data contents and to fillin individual
932 * ie pointers. The data blob is assumed to be well-formed;
933 * we don't do any validity checking of ie lengths.
936 ieee80211_ies_expand(struct ieee80211_ies *ies)
945 case IEEE80211_ELEMID_VENDOR:
948 else if (iswmeoui(ie))
950 #ifdef IEEE80211_SUPPORT_SUPERG
951 else if (isatherosoui(ie))
954 #ifdef IEEE80211_SUPPORT_TDMA
955 else if (istdmaoui(ie))
959 case IEEE80211_ELEMID_RSN:
962 case IEEE80211_ELEMID_HTCAP:
965 case IEEE80211_ELEMID_HTINFO:
968 #ifdef IEEE80211_SUPPORT_MESH
969 case IEEE80211_ELEMID_MESHID:
980 * Reclaim any resources in a node and reset any critical
981 * state. Typically nodes are free'd immediately after,
982 * but in some cases the storage may be reused so we need
983 * to insure consistent state (should probably fix that).
986 node_cleanup(struct ieee80211_node *ni)
988 #define N(a) (sizeof(a)/sizeof(a[0]))
989 struct ieee80211vap *vap = ni->ni_vap;
990 struct ieee80211com *ic = ni->ni_ic;
993 /* NB: preserve ni_table */
994 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
995 if (vap->iv_opmode != IEEE80211_M_STA)
997 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
998 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
999 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1002 * Cleanup any HT-related state.
1004 if (ni->ni_flags & IEEE80211_NODE_HT)
1005 ieee80211_ht_node_cleanup(ni);
1006 #ifdef IEEE80211_SUPPORT_SUPERG
1007 else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
1008 ieee80211_ff_node_cleanup(ni);
1010 #ifdef IEEE80211_SUPPORT_MESH
1012 * Cleanup any mesh-related state.
1014 if (vap->iv_opmode == IEEE80211_M_MBSS)
1015 ieee80211_mesh_node_cleanup(ni);
1018 * Clear any staging queue entries.
1020 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1023 * Clear AREF flag that marks the authorization refcnt bump
1024 * has happened. This is probably not needed as the node
1025 * should always be removed from the table so not found but
1026 * do it just in case.
1027 * Likewise clear the ASSOCID flag as these flags are intended
1028 * to be managed in tandem.
1030 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1033 * Drain power save queue and, if needed, clear TIM.
1035 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1036 vap->iv_set_tim(ni, 0);
1039 if (ni->ni_challenge != NULL) {
1040 free(ni->ni_challenge, M_80211_NODE);
1041 ni->ni_challenge = NULL;
1044 * Preserve SSID, WPA, and WME ie's so the bss node is
1045 * reusable during a re-auth/re-assoc state transition.
1046 * If we remove these data they will not be recreated
1047 * because they come from a probe-response or beacon frame
1048 * which cannot be expected prior to the association-response.
1049 * This should not be an issue when operating in other modes
1050 * as stations leaving always go through a full state transition
1051 * which will rebuild this state.
1053 * XXX does this leave us open to inheriting old state?
1055 for (i = 0; i < N(ni->ni_rxfrag); i++)
1056 if (ni->ni_rxfrag[i] != NULL) {
1057 m_freem(ni->ni_rxfrag[i]);
1058 ni->ni_rxfrag[i] = NULL;
1061 * Must be careful here to remove any key map entry w/o a LOR.
1063 ieee80211_node_delucastkey(ni);
1068 node_free(struct ieee80211_node *ni)
1070 struct ieee80211com *ic = ni->ni_ic;
1072 ieee80211_ratectl_node_deinit(ni);
1073 ic->ic_node_cleanup(ni);
1074 ieee80211_ies_cleanup(&ni->ni_ies);
1075 ieee80211_psq_cleanup(&ni->ni_psq);
1076 free(ni, M_80211_NODE);
1080 node_age(struct ieee80211_node *ni)
1082 struct ieee80211vap *vap = ni->ni_vap;
1084 IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta);
1087 * Age frames on the power save queue.
1089 if (ieee80211_node_psq_age(ni) != 0 &&
1090 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1091 vap->iv_set_tim(ni, 0);
1093 * Age out HT resources (e.g. frames on the
1094 * A-MPDU reorder queues).
1096 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1097 ieee80211_ht_node_age(ni);
1101 node_getrssi(const struct ieee80211_node *ni)
1103 uint32_t avgrssi = ni->ni_avgrssi;
1106 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1108 rssi = IEEE80211_RSSI_GET(avgrssi);
1109 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1113 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1115 *rssi = node_getrssi(ni);
1116 *noise = ni->ni_noise;
1120 node_getmimoinfo(const struct ieee80211_node *ni,
1121 struct ieee80211_mimo_info *info)
1127 bzero(info, sizeof(*info));
1129 for (i = 0; i < ni->ni_mimo_chains; i++) {
1130 avgrssi = ni->ni_mimo_rssi_ctl[i];
1131 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1134 rssi = IEEE80211_RSSI_GET(avgrssi);
1135 info->rssi[i] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1137 info->noise[i] = ni->ni_mimo_noise_ctl[i];
1140 /* XXX ext radios? */
1145 struct ieee80211_node *
1146 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1147 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1149 struct ieee80211com *ic = nt->nt_ic;
1150 struct ieee80211_node *ni;
1153 ni = ic->ic_node_alloc(vap, macaddr);
1155 vap->iv_stats.is_rx_nodealloc++;
1159 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1160 "%s %p<%s> in %s table\n", __func__, ni,
1161 ether_sprintf(macaddr), nt->nt_name);
1163 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1164 hash = IEEE80211_NODE_HASH(ic, macaddr);
1165 ieee80211_node_initref(ni); /* mark referenced */
1166 ni->ni_chan = IEEE80211_CHAN_ANYC;
1167 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1168 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1169 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1170 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1171 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1172 ni->ni_inact_reload = nt->nt_inact_init;
1173 ni->ni_inact = ni->ni_inact_reload;
1174 ni->ni_ath_defkeyix = 0x7fff;
1175 ieee80211_psq_init(&ni->ni_psq, "unknown");
1176 #ifdef IEEE80211_SUPPORT_MESH
1177 if (vap->iv_opmode == IEEE80211_M_MBSS)
1178 ieee80211_mesh_node_init(vap, ni);
1180 IEEE80211_NODE_LOCK(nt);
1181 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1182 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1186 IEEE80211_NODE_UNLOCK(nt);
1188 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1189 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1191 ieee80211_ratectl_node_init(ni);
1197 * Craft a temporary node suitable for sending a management frame
1198 * to the specified station. We craft only as much state as we
1199 * need to do the work since the node will be immediately reclaimed
1200 * once the send completes.
1202 struct ieee80211_node *
1203 ieee80211_tmp_node(struct ieee80211vap *vap,
1204 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1206 struct ieee80211com *ic = vap->iv_ic;
1207 struct ieee80211_node *ni;
1209 ni = ic->ic_node_alloc(vap, macaddr);
1211 struct ieee80211_node *bss = vap->iv_bss;
1213 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1214 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1216 ni->ni_table = NULL; /* NB: pedantic */
1217 ni->ni_ic = ic; /* NB: needed to set channel */
1220 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1221 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1222 ieee80211_node_initref(ni); /* mark referenced */
1223 /* NB: required by ieee80211_fix_rate */
1224 ieee80211_node_set_chan(ni, bss->ni_chan);
1225 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1226 IEEE80211_KEYIX_NONE);
1227 ni->ni_txpower = bss->ni_txpower;
1228 /* XXX optimize away */
1229 ieee80211_psq_init(&ni->ni_psq, "unknown");
1231 ieee80211_ratectl_node_init(ni);
1234 vap->iv_stats.is_rx_nodealloc++;
1239 struct ieee80211_node *
1240 ieee80211_dup_bss(struct ieee80211vap *vap,
1241 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1243 struct ieee80211com *ic = vap->iv_ic;
1244 struct ieee80211_node *ni;
1246 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1248 struct ieee80211_node *bss = vap->iv_bss;
1250 * Inherit from iv_bss.
1253 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1254 ieee80211_node_set_chan(ni, bss->ni_chan);
1260 * Create a bss node for a legacy WDS vap. The far end does
1261 * not associate so we just create create a new node and
1262 * simulate an association. The caller is responsible for
1263 * installing the node as the bss node and handling any further
1264 * setup work like authorizing the port.
1266 struct ieee80211_node *
1267 ieee80211_node_create_wds(struct ieee80211vap *vap,
1268 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1270 struct ieee80211com *ic = vap->iv_ic;
1271 struct ieee80211_node *ni;
1273 /* XXX check if node already in sta table? */
1274 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1276 ni->ni_wdsvap = vap;
1277 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1279 * Inherit any manually configured settings.
1281 copy_bss(ni, vap->iv_bss);
1282 ieee80211_node_set_chan(ni, chan);
1283 /* NB: propagate ssid so available to WPA supplicant */
1284 ni->ni_esslen = vap->iv_des_ssid[0].len;
1285 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1286 /* NB: no associd for peer */
1288 * There are no management frames to use to
1289 * discover neighbor capabilities, so blindly
1290 * propagate the local configuration.
1292 if (vap->iv_flags & IEEE80211_F_WME)
1293 ni->ni_flags |= IEEE80211_NODE_QOS;
1294 #ifdef IEEE80211_SUPPORT_SUPERG
1295 if (vap->iv_flags & IEEE80211_F_FF)
1296 ni->ni_flags |= IEEE80211_NODE_FF;
1298 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1299 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1301 * Device is HT-capable and HT is enabled for
1302 * the vap; setup HT operation. On return
1303 * ni_chan will be adjusted to an HT channel.
1305 ieee80211_ht_wds_init(ni);
1307 struct ieee80211_channel *c = ni->ni_chan;
1309 * Force a legacy channel to be used.
1311 c = ieee80211_find_channel(ic,
1312 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1313 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1314 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1321 struct ieee80211_node *
1322 #ifdef IEEE80211_DEBUG_REFCNT
1323 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1324 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1326 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1327 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1330 struct ieee80211_node *ni;
1333 IEEE80211_NODE_LOCK_ASSERT(nt);
1335 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1336 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1337 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1338 ieee80211_ref_node(ni); /* mark referenced */
1339 #ifdef IEEE80211_DEBUG_REFCNT
1340 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1341 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1343 ni, ether_sprintf(ni->ni_macaddr),
1344 ieee80211_node_refcnt(ni));
1352 struct ieee80211_node *
1353 #ifdef IEEE80211_DEBUG_REFCNT
1354 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1355 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1357 ieee80211_find_node(struct ieee80211_node_table *nt,
1358 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1361 struct ieee80211_node *ni;
1363 IEEE80211_NODE_LOCK(nt);
1364 ni = ieee80211_find_node_locked(nt, macaddr);
1365 IEEE80211_NODE_UNLOCK(nt);
1369 struct ieee80211_node *
1370 #ifdef IEEE80211_DEBUG_REFCNT
1371 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1372 const struct ieee80211vap *vap,
1373 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1375 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1376 const struct ieee80211vap *vap,
1377 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1380 struct ieee80211_node *ni;
1383 IEEE80211_NODE_LOCK_ASSERT(nt);
1385 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1386 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1387 if (ni->ni_vap == vap &&
1388 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1389 ieee80211_ref_node(ni); /* mark referenced */
1390 #ifdef IEEE80211_DEBUG_REFCNT
1391 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1392 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1394 ni, ether_sprintf(ni->ni_macaddr),
1395 ieee80211_node_refcnt(ni));
1403 struct ieee80211_node *
1404 #ifdef IEEE80211_DEBUG_REFCNT
1405 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1406 const struct ieee80211vap *vap,
1407 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1409 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1410 const struct ieee80211vap *vap,
1411 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1414 struct ieee80211_node *ni;
1416 IEEE80211_NODE_LOCK(nt);
1417 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1418 IEEE80211_NODE_UNLOCK(nt);
1423 * Fake up a node; this handles node discovery in adhoc mode.
1424 * Note that for the driver's benefit we we treat this like
1425 * an association so the driver has an opportunity to setup
1426 * it's private state.
1428 struct ieee80211_node *
1429 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1430 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1432 struct ieee80211_node *ni;
1434 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1435 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1436 ni = ieee80211_dup_bss(vap, macaddr);
1438 struct ieee80211com *ic = vap->iv_ic;
1440 /* XXX no rate negotiation; just dup */
1441 ni->ni_rates = vap->iv_bss->ni_rates;
1442 if (ieee80211_iserp_rateset(&ni->ni_rates))
1443 ni->ni_flags |= IEEE80211_NODE_ERP;
1444 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1446 * In adhoc demo mode there are no management
1447 * frames to use to discover neighbor capabilities,
1448 * so blindly propagate the local configuration
1449 * so we can do interesting things (e.g. use
1450 * WME to disable ACK's).
1452 if (vap->iv_flags & IEEE80211_F_WME)
1453 ni->ni_flags |= IEEE80211_NODE_QOS;
1454 #ifdef IEEE80211_SUPPORT_SUPERG
1455 if (vap->iv_flags & IEEE80211_F_FF)
1456 ni->ni_flags |= IEEE80211_NODE_FF;
1459 ieee80211_node_setuptxparms(ni);
1460 ieee80211_ratectl_node_init(ni);
1461 if (ic->ic_newassoc != NULL)
1462 ic->ic_newassoc(ni, 1);
1463 /* XXX not right for 802.1x/WPA */
1464 ieee80211_node_authorize(ni);
1470 ieee80211_init_neighbor(struct ieee80211_node *ni,
1471 const struct ieee80211_frame *wh,
1472 const struct ieee80211_scanparams *sp)
1474 int do_ht_setup = 0;
1476 ni->ni_esslen = sp->ssid[1];
1477 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1478 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1479 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1480 ni->ni_intval = sp->bintval;
1481 ni->ni_capinfo = sp->capinfo;
1482 ni->ni_chan = ni->ni_ic->ic_curchan;
1483 ni->ni_fhdwell = sp->fhdwell;
1484 ni->ni_fhindex = sp->fhindex;
1485 ni->ni_erp = sp->erp;
1486 ni->ni_timoff = sp->timoff;
1487 #ifdef IEEE80211_SUPPORT_MESH
1488 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1489 ieee80211_mesh_init_neighbor(ni, wh, sp);
1491 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1492 ieee80211_ies_expand(&ni->ni_ies);
1493 if (ni->ni_ies.wme_ie != NULL)
1494 ni->ni_flags |= IEEE80211_NODE_QOS;
1496 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1497 #ifdef IEEE80211_SUPPORT_SUPERG
1498 if (ni->ni_ies.ath_ie != NULL)
1499 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1501 if (ni->ni_ies.htcap_ie != NULL)
1502 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1503 if (ni->ni_ies.htinfo_ie != NULL)
1504 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1506 if ((ni->ni_ies.htcap_ie != NULL) &&
1507 (ni->ni_ies.htinfo_ie != NULL) &&
1508 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1513 /* NB: must be after ni_chan is setup */
1514 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1515 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1516 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1519 * If the neighbor is HT compatible, flip that on.
1522 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1523 "%s: doing HT setup\n", __func__);
1524 ieee80211_ht_node_init(ni);
1525 ieee80211_ht_updateparams(ni,
1526 ni->ni_ies.htcap_ie,
1527 ni->ni_ies.htinfo_ie);
1528 ieee80211_setup_htrates(ni,
1529 ni->ni_ies.htcap_ie,
1530 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1531 ieee80211_setup_basic_htrates(ni,
1532 ni->ni_ies.htinfo_ie);
1533 ieee80211_node_setuptxparms(ni);
1534 ieee80211_ratectl_node_init(ni);
1539 * Do node discovery in adhoc mode on receipt of a beacon
1540 * or probe response frame. Note that for the driver's
1541 * benefit we we treat this like an association so the
1542 * driver has an opportunity to setup it's private state.
1544 struct ieee80211_node *
1545 ieee80211_add_neighbor(struct ieee80211vap *vap,
1546 const struct ieee80211_frame *wh,
1547 const struct ieee80211_scanparams *sp)
1549 struct ieee80211_node *ni;
1551 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1552 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1553 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1555 struct ieee80211com *ic = vap->iv_ic;
1557 ieee80211_init_neighbor(ni, wh, sp);
1558 if (ieee80211_iserp_rateset(&ni->ni_rates))
1559 ni->ni_flags |= IEEE80211_NODE_ERP;
1560 ieee80211_node_setuptxparms(ni);
1561 ieee80211_ratectl_node_init(ni);
1562 if (ic->ic_newassoc != NULL)
1563 ic->ic_newassoc(ni, 1);
1564 /* XXX not right for 802.1x/WPA */
1565 ieee80211_node_authorize(ni);
1570 #define IS_PROBEREQ(wh) \
1571 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1572 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1573 #define IS_BCAST_PROBEREQ(wh) \
1574 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1575 ((const struct ieee80211_frame *)(wh))->i_addr3))
1577 static __inline struct ieee80211_node *
1578 _find_rxnode(struct ieee80211_node_table *nt,
1579 const struct ieee80211_frame_min *wh)
1581 if (IS_BCAST_PROBEREQ(wh))
1582 return NULL; /* spam bcast probe req to all vap's */
1583 return ieee80211_find_node_locked(nt, wh->i_addr2);
1587 * Locate the node for sender, track state, and then pass the
1588 * (referenced) node up to the 802.11 layer for its use. Note
1589 * we can return NULL if the sender is not in the table.
1591 struct ieee80211_node *
1592 #ifdef IEEE80211_DEBUG_REFCNT
1593 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1594 const struct ieee80211_frame_min *wh, const char *func, int line)
1596 ieee80211_find_rxnode(struct ieee80211com *ic,
1597 const struct ieee80211_frame_min *wh)
1600 struct ieee80211_node_table *nt;
1601 struct ieee80211_node *ni;
1604 IEEE80211_NODE_LOCK(nt);
1605 ni = _find_rxnode(nt, wh);
1606 IEEE80211_NODE_UNLOCK(nt);
1612 * Like ieee80211_find_rxnode but use the supplied h/w
1613 * key index as a hint to locate the node in the key
1614 * mapping table. If an entry is present at the key
1615 * index we return it; otherwise do a normal lookup and
1616 * update the mapping table if the station has a unicast
1617 * key assigned to it.
1619 struct ieee80211_node *
1620 #ifdef IEEE80211_DEBUG_REFCNT
1621 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1622 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1623 const char *func, int line)
1625 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1626 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1629 struct ieee80211_node_table *nt;
1630 struct ieee80211_node *ni;
1633 IEEE80211_NODE_LOCK(nt);
1634 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1635 ni = nt->nt_keyixmap[keyix];
1639 ni = _find_rxnode(nt, wh);
1640 if (ni != NULL && nt->nt_keyixmap != NULL) {
1642 * If the station has a unicast key cache slot
1643 * assigned update the key->node mapping table.
1645 keyix = ni->ni_ucastkey.wk_rxkeyix;
1646 /* XXX can keyixmap[keyix] != NULL? */
1647 if (keyix < nt->nt_keyixmax &&
1648 nt->nt_keyixmap[keyix] == NULL) {
1649 IEEE80211_DPRINTF(ni->ni_vap,
1651 "%s: add key map entry %p<%s> refcnt %d\n",
1652 __func__, ni, ether_sprintf(ni->ni_macaddr),
1653 ieee80211_node_refcnt(ni)+1);
1654 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1658 if (IS_BCAST_PROBEREQ(wh))
1659 ni = NULL; /* spam bcast probe req to all vap's */
1661 ieee80211_ref_node(ni);
1663 IEEE80211_NODE_UNLOCK(nt);
1667 #undef IS_BCAST_PROBEREQ
1671 * Return a reference to the appropriate node for sending
1672 * a data frame. This handles node discovery in adhoc networks.
1674 struct ieee80211_node *
1675 #ifdef IEEE80211_DEBUG_REFCNT
1676 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1677 const uint8_t macaddr[IEEE80211_ADDR_LEN],
1678 const char *func, int line)
1680 ieee80211_find_txnode(struct ieee80211vap *vap,
1681 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1684 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
1685 struct ieee80211_node *ni;
1688 * The destination address should be in the node table
1689 * unless this is a multicast/broadcast frame. We can
1690 * also optimize station mode operation, all frames go
1693 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
1694 IEEE80211_NODE_LOCK(nt);
1695 if (vap->iv_opmode == IEEE80211_M_STA ||
1696 vap->iv_opmode == IEEE80211_M_WDS ||
1697 IEEE80211_IS_MULTICAST(macaddr))
1698 ni = ieee80211_ref_node(vap->iv_bss);
1700 ni = ieee80211_find_node_locked(nt, macaddr);
1701 IEEE80211_NODE_UNLOCK(nt);
1704 if (vap->iv_opmode == IEEE80211_M_IBSS ||
1705 vap->iv_opmode == IEEE80211_M_AHDEMO) {
1707 * In adhoc mode cons up a node for the destination.
1708 * Note that we need an additional reference for the
1709 * caller to be consistent with
1710 * ieee80211_find_node_locked.
1712 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
1714 (void) ieee80211_ref_node(ni);
1716 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
1717 "no node, discard frame (%s)", __func__);
1718 vap->iv_stats.is_tx_nonode++;
1725 _ieee80211_free_node(struct ieee80211_node *ni)
1727 struct ieee80211_node_table *nt = ni->ni_table;
1730 * NB: careful about referencing the vap as it may be
1731 * gone if the last reference was held by a driver.
1732 * We know the com will always be present so it's safe
1733 * to use ni_ic below to reclaim resources.
1736 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1737 "%s %p<%s> in %s table\n", __func__, ni,
1738 ether_sprintf(ni->ni_macaddr),
1739 nt != NULL ? nt->nt_name : "<gone>");
1741 if (ni->ni_associd != 0) {
1742 struct ieee80211vap *vap = ni->ni_vap;
1743 if (vap->iv_aid_bitmap != NULL)
1744 IEEE80211_AID_CLR(vap, ni->ni_associd);
1747 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1748 LIST_REMOVE(ni, ni_hash);
1750 ni->ni_ic->ic_node_free(ni);
1754 #ifdef IEEE80211_DEBUG_REFCNT
1755 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
1757 ieee80211_free_node(struct ieee80211_node *ni)
1760 struct ieee80211_node_table *nt = ni->ni_table;
1762 #ifdef IEEE80211_DEBUG_REFCNT
1763 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1764 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
1765 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
1768 IEEE80211_NODE_LOCK(nt);
1769 if (ieee80211_node_dectestref(ni)) {
1771 * Last reference, reclaim state.
1773 _ieee80211_free_node(ni);
1774 } else if (ieee80211_node_refcnt(ni) == 1 &&
1775 nt->nt_keyixmap != NULL) {
1776 ieee80211_keyix keyix;
1778 * Check for a last reference in the key mapping table.
1780 keyix = ni->ni_ucastkey.wk_rxkeyix;
1781 if (keyix < nt->nt_keyixmax &&
1782 nt->nt_keyixmap[keyix] == ni) {
1783 IEEE80211_DPRINTF(ni->ni_vap,
1785 "%s: %p<%s> clear key map entry", __func__,
1786 ni, ether_sprintf(ni->ni_macaddr));
1787 nt->nt_keyixmap[keyix] = NULL;
1788 ieee80211_node_decref(ni); /* XXX needed? */
1789 _ieee80211_free_node(ni);
1792 IEEE80211_NODE_UNLOCK(nt);
1794 if (ieee80211_node_dectestref(ni))
1795 _ieee80211_free_node(ni);
1800 * Reclaim a unicast key and clear any key cache state.
1803 ieee80211_node_delucastkey(struct ieee80211_node *ni)
1805 struct ieee80211com *ic = ni->ni_ic;
1806 struct ieee80211_node_table *nt = &ic->ic_sta;
1807 struct ieee80211_node *nikey;
1808 ieee80211_keyix keyix;
1809 int isowned, status;
1812 * NB: We must beware of LOR here; deleting the key
1813 * can cause the crypto layer to block traffic updates
1814 * which can generate a LOR against the node table lock;
1815 * grab it here and stash the key index for our use below.
1817 * Must also beware of recursion on the node table lock.
1818 * When called from node_cleanup we may already have
1819 * the node table lock held. Unfortunately there's no
1820 * way to separate out this path so we must do this
1823 isowned = IEEE80211_NODE_IS_LOCKED(nt);
1825 IEEE80211_NODE_LOCK(nt);
1827 status = 1; /* NB: success */
1828 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
1829 keyix = ni->ni_ucastkey.wk_rxkeyix;
1830 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
1831 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
1832 nikey = nt->nt_keyixmap[keyix];
1833 nt->nt_keyixmap[keyix] = NULL;
1837 IEEE80211_NODE_UNLOCK(nt);
1839 if (nikey != NULL) {
1840 KASSERT(nikey == ni,
1841 ("key map out of sync, ni %p nikey %p", ni, nikey));
1842 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1843 "%s: delete key map entry %p<%s> refcnt %d\n",
1844 __func__, ni, ether_sprintf(ni->ni_macaddr),
1845 ieee80211_node_refcnt(ni)-1);
1846 ieee80211_free_node(ni);
1852 * Reclaim a node. If this is the last reference count then
1853 * do the normal free work. Otherwise remove it from the node
1854 * table and mark it gone by clearing the back-reference.
1857 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1859 ieee80211_keyix keyix;
1861 IEEE80211_NODE_LOCK_ASSERT(nt);
1863 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1864 "%s: remove %p<%s> from %s table, refcnt %d\n",
1865 __func__, ni, ether_sprintf(ni->ni_macaddr),
1866 nt->nt_name, ieee80211_node_refcnt(ni)-1);
1868 * Clear any entry in the unicast key mapping table.
1869 * We need to do it here so rx lookups don't find it
1870 * in the mapping table even if it's not in the hash
1871 * table. We cannot depend on the mapping table entry
1872 * being cleared because the node may not be free'd.
1874 keyix = ni->ni_ucastkey.wk_rxkeyix;
1875 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
1876 nt->nt_keyixmap[keyix] == ni) {
1877 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1878 "%s: %p<%s> clear key map entry %u\n",
1879 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
1880 nt->nt_keyixmap[keyix] = NULL;
1881 ieee80211_node_decref(ni); /* NB: don't need free */
1883 if (!ieee80211_node_dectestref(ni)) {
1885 * Other references are present, just remove the
1886 * node from the table so it cannot be found. When
1887 * the references are dropped storage will be
1890 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1891 LIST_REMOVE(ni, ni_hash);
1892 ni->ni_table = NULL; /* clear reference */
1894 _ieee80211_free_node(ni);
1898 * Node table support.
1902 ieee80211_node_table_init(struct ieee80211com *ic,
1903 struct ieee80211_node_table *nt,
1904 const char *name, int inact, int keyixmax)
1906 struct ifnet *ifp = ic->ic_ifp;
1909 IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname);
1910 IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname);
1911 TAILQ_INIT(&nt->nt_node);
1914 nt->nt_inact_init = inact;
1915 nt->nt_keyixmax = keyixmax;
1916 if (nt->nt_keyixmax > 0) {
1917 nt->nt_keyixmap = (struct ieee80211_node **) malloc(
1918 keyixmax * sizeof(struct ieee80211_node *),
1919 M_80211_NODE, M_NOWAIT | M_ZERO);
1920 if (nt->nt_keyixmap == NULL)
1921 if_printf(ic->ic_ifp,
1922 "Cannot allocate key index map with %u entries\n",
1925 nt->nt_keyixmap = NULL;
1929 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
1930 struct ieee80211vap *match)
1932 struct ieee80211_node *ni, *next;
1934 IEEE80211_NODE_LOCK(nt);
1935 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
1936 if (match != NULL && ni->ni_vap != match)
1938 /* XXX can this happen? if so need's work */
1939 if (ni->ni_associd != 0) {
1940 struct ieee80211vap *vap = ni->ni_vap;
1942 if (vap->iv_auth->ia_node_leave != NULL)
1943 vap->iv_auth->ia_node_leave(ni);
1944 if (vap->iv_aid_bitmap != NULL)
1945 IEEE80211_AID_CLR(vap, ni->ni_associd);
1947 ni->ni_wdsvap = NULL; /* clear reference */
1948 node_reclaim(nt, ni);
1950 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
1952 * Make a separate pass to clear references to this vap
1953 * held by DWDS entries. They will not be matched above
1954 * because ni_vap will point to the ap vap but we still
1955 * need to clear ni_wdsvap when the WDS vap is destroyed
1958 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
1959 if (ni->ni_wdsvap == match)
1960 ni->ni_wdsvap = NULL;
1962 IEEE80211_NODE_UNLOCK(nt);
1966 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
1968 ieee80211_node_table_reset(nt, NULL);
1969 if (nt->nt_keyixmap != NULL) {
1971 /* XXX verify all entries are NULL */
1973 for (i = 0; i < nt->nt_keyixmax; i++)
1974 if (nt->nt_keyixmap[i] != NULL)
1975 printf("%s: %s[%u] still active\n", __func__,
1978 free(nt->nt_keyixmap, M_80211_NODE);
1979 nt->nt_keyixmap = NULL;
1981 IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt);
1982 IEEE80211_NODE_LOCK_DESTROY(nt);
1986 * Timeout inactive stations and do related housekeeping.
1987 * Note that we cannot hold the node lock while sending a
1988 * frame as this would lead to a LOR. Instead we use a
1989 * generation number to mark nodes that we've scanned and
1990 * drop the lock and restart a scan if we have to time out
1991 * a node. Since we are single-threaded by virtue of
1992 * controlling the inactivity timer we can be sure this will
1993 * process each node only once.
1996 ieee80211_timeout_stations(struct ieee80211com *ic)
1998 struct ieee80211_node_table *nt = &ic->ic_sta;
1999 struct ieee80211vap *vap;
2000 struct ieee80211_node *ni;
2003 IEEE80211_NODE_ITERATE_LOCK(nt);
2004 gen = ++nt->nt_scangen;
2006 IEEE80211_NODE_LOCK(nt);
2007 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2008 if (ni->ni_scangen == gen) /* previously handled */
2010 ni->ni_scangen = gen;
2012 * Ignore entries for which have yet to receive an
2013 * authentication frame. These are transient and
2014 * will be reclaimed when the last reference to them
2015 * goes away (when frame xmits complete).
2019 * Only process stations when in RUN state. This
2020 * insures, for example, that we don't timeout an
2021 * inactive station during CAC. Note that CSA state
2022 * is actually handled in ieee80211_node_timeout as
2023 * it applies to more than timeout processing.
2025 if (vap->iv_state != IEEE80211_S_RUN)
2027 /* XXX can vap be NULL? */
2028 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2029 vap->iv_opmode == IEEE80211_M_STA) &&
2030 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2033 * Free fragment if not needed anymore
2034 * (last fragment older than 1s).
2035 * XXX doesn't belong here, move to node_age
2037 if (ni->ni_rxfrag[0] != NULL &&
2038 ticks > ni->ni_rxfragstamp + hz) {
2039 m_freem(ni->ni_rxfrag[0]);
2040 ni->ni_rxfrag[0] = NULL;
2042 if (ni->ni_inact > 0) {
2044 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2045 "%s: inact %u inact_reload %u nrates %u",
2046 __func__, ni->ni_inact, ni->ni_inact_reload,
2047 ni->ni_rates.rs_nrates);
2050 * Special case ourself; we may be idle for extended periods
2051 * of time and regardless reclaiming our state is wrong.
2052 * XXX run ic_node_age
2054 if (ni == vap->iv_bss)
2056 if (ni->ni_associd != 0 ||
2057 (vap->iv_opmode == IEEE80211_M_IBSS ||
2058 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2060 * Age/drain resources held by the station.
2062 ic->ic_node_age(ni);
2064 * Probe the station before time it out. We
2065 * send a null data frame which may not be
2066 * universally supported by drivers (need it
2067 * for ps-poll support so it should be...).
2069 * XXX don't probe the station unless we've
2070 * received a frame from them (and have
2071 * some idea of the rates they are capable
2072 * of); this will get fixed more properly
2073 * soon with better handling of the rate set.
2075 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2076 (0 < ni->ni_inact &&
2077 ni->ni_inact <= vap->iv_inact_probe) &&
2078 ni->ni_rates.rs_nrates != 0) {
2080 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2082 "probe station due to inactivity");
2084 * Grab a reference before unlocking the table
2085 * so the node cannot be reclaimed before we
2086 * send the frame. ieee80211_send_nulldata
2087 * understands we've done this and reclaims the
2088 * ref for us as needed.
2090 ieee80211_ref_node(ni);
2091 IEEE80211_NODE_UNLOCK(nt);
2092 ieee80211_send_nulldata(ni);
2097 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2098 ni->ni_inact <= 0) {
2100 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2101 "station timed out due to inactivity "
2102 "(refcnt %u)", ieee80211_node_refcnt(ni));
2104 * Send a deauthenticate frame and drop the station.
2105 * This is somewhat complicated due to reference counts
2106 * and locking. At this point a station will typically
2107 * have a reference count of 1. ieee80211_node_leave
2108 * will do a "free" of the node which will drop the
2109 * reference count. But in the meantime a reference
2110 * wil be held by the deauth frame. The actual reclaim
2111 * of the node will happen either after the tx is
2112 * completed or by ieee80211_node_leave.
2114 * Separately we must drop the node lock before sending
2115 * in case the driver takes a lock, as this can result
2116 * in a LOR between the node lock and the driver lock.
2118 ieee80211_ref_node(ni);
2119 IEEE80211_NODE_UNLOCK(nt);
2120 if (ni->ni_associd != 0) {
2121 IEEE80211_SEND_MGMT(ni,
2122 IEEE80211_FC0_SUBTYPE_DEAUTH,
2123 IEEE80211_REASON_AUTH_EXPIRE);
2125 ieee80211_node_leave(ni);
2126 ieee80211_free_node(ni);
2127 vap->iv_stats.is_node_timeout++;
2131 IEEE80211_NODE_UNLOCK(nt);
2133 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2137 * Aggressively reclaim resources. This should be used
2138 * only in a critical situation to reclaim mbuf resources.
2141 ieee80211_drain(struct ieee80211com *ic)
2143 struct ieee80211_node_table *nt = &ic->ic_sta;
2144 struct ieee80211vap *vap;
2145 struct ieee80211_node *ni;
2147 IEEE80211_NODE_LOCK(nt);
2148 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2150 * Ignore entries for which have yet to receive an
2151 * authentication frame. These are transient and
2152 * will be reclaimed when the last reference to them
2153 * goes away (when frame xmits complete).
2157 * Only process stations when in RUN state. This
2158 * insures, for example, that we don't timeout an
2159 * inactive station during CAC. Note that CSA state
2160 * is actually handled in ieee80211_node_timeout as
2161 * it applies to more than timeout processing.
2163 if (vap->iv_state != IEEE80211_S_RUN)
2165 /* XXX can vap be NULL? */
2166 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2167 vap->iv_opmode == IEEE80211_M_STA) &&
2168 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2172 * XXX doesn't belong here, move to node_drain
2174 if (ni->ni_rxfrag[0] != NULL) {
2175 m_freem(ni->ni_rxfrag[0]);
2176 ni->ni_rxfrag[0] = NULL;
2179 * Drain resources held by the station.
2181 ic->ic_node_drain(ni);
2183 IEEE80211_NODE_UNLOCK(nt);
2187 * Per-ieee80211com inactivity timer callback.
2190 ieee80211_node_timeout(void *arg)
2192 struct ieee80211com *ic = arg;
2195 * Defer timeout processing if a channel switch is pending.
2196 * We typically need to be mute so not doing things that
2197 * might generate frames is good to handle in one place.
2198 * Supressing the station timeout processing may extend the
2199 * lifetime of inactive stations (by not decrementing their
2200 * idle counters) but this should be ok unless the CSA is
2201 * active for an unusually long time.
2203 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2204 ieee80211_scan_timeout(ic);
2205 ieee80211_timeout_stations(ic);
2206 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2209 ieee80211_erp_timeout(ic);
2210 ieee80211_ht_timeout(ic);
2211 IEEE80211_UNLOCK(ic);
2213 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2214 ieee80211_node_timeout, ic);
2218 * Iterate over the node table and return an array of ref'ed nodes.
2220 * This is separated out from calling the actual node function so that
2221 * no LORs will occur.
2223 * If there are too many nodes (ie, the number of nodes doesn't fit
2224 * within 'max_aid' entries) then the node references will be freed
2225 * and an error will be returned.
2227 * The responsibility of allocating and freeing "ni_arr" is up to
2231 ieee80211_iterate_nt(struct ieee80211_node_table *nt,
2232 struct ieee80211_node **ni_arr, uint16_t max_aid)
2236 struct ieee80211_node *ni;
2238 IEEE80211_NODE_ITERATE_LOCK(nt);
2239 IEEE80211_NODE_LOCK(nt);
2241 gen = ++nt->nt_scangen;
2245 * We simply assume here that since the node
2246 * scan generation doesn't change (as
2247 * we are holding both the node table and
2248 * node table iteration locks), we can simply
2249 * assign it to the node here.
2251 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2254 if_printf(nt->nt_ic->ic_ifp,
2255 "Node array overflow: max=%u", max_aid);
2258 ni_arr[i] = ieee80211_ref_node(ni);
2259 ni_arr[i]->ni_scangen = gen;
2264 * It's safe to unlock here.
2266 * If we're successful, the list is returned.
2267 * If we're unsuccessful, the list is ignored
2268 * and we remove our references.
2270 * This avoids any potential LOR with
2271 * ieee80211_free_node().
2273 IEEE80211_NODE_UNLOCK(nt);
2274 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2277 * If ret is non-zero, we hit some kind of error.
2278 * Rather than walking some nodes, we'll walk none
2282 for (j = 0; j < i; j++) {
2283 /* ieee80211_free_node() locks by itself */
2284 ieee80211_free_node(ni_arr[j]);
2292 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2293 * reference in the source.
2295 * Note that this fetches 'max_aid' from the first VAP, rather than finding
2296 * the largest max_aid from all VAPs.
2299 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2300 ieee80211_iter_func *f, void *arg)
2302 struct ieee80211_node **ni_arr;
2306 struct ieee80211vap *vap;
2308 /* Overdoing it default */
2309 max_aid = IEEE80211_AID_MAX;
2311 /* Handle the case of there being no vaps just yet */
2312 vap = TAILQ_FIRST(&nt->nt_ic->ic_vaps);
2314 max_aid = vap->iv_max_aid;
2316 size = max_aid * sizeof(struct ieee80211_node *);
2317 ni_arr = (struct ieee80211_node **) malloc(size, M_80211_NODE,
2323 * If this fails, the node table won't have any
2324 * valid entries - ieee80211_iterate_nt() frees
2325 * the references to them. So don't try walking
2326 * the table; just skip to the end and free the
2329 if (ieee80211_iterate_nt(nt, ni_arr, max_aid) != 0)
2332 for (i = 0; i < max_aid; i++) {
2333 if (ni_arr[i] == NULL) /* end of the list */
2335 (*f)(arg, ni_arr[i]);
2336 /* ieee80211_free_node() locks by itself */
2337 ieee80211_free_node(ni_arr[i]);
2341 free(ni_arr, M_80211_NODE);
2345 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2347 printf("0x%p: mac %s refcnt %d\n", ni,
2348 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2349 printf("\tscangen %u authmode %u flags 0x%x\n",
2350 ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
2351 printf("\tassocid 0x%x txpower %u vlan %u\n",
2352 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2353 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2354 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2355 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2356 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2357 ni->ni_rxfragstamp);
2358 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2359 node_getrssi(ni), ni->ni_noise,
2360 ni->ni_intval, ni->ni_capinfo);
2361 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2362 ether_sprintf(ni->ni_bssid),
2363 ni->ni_esslen, ni->ni_essid,
2364 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2365 printf("\tinact %u inact_reload %u txrate %u\n",
2366 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2367 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2368 ni->ni_htcap, ni->ni_htparam,
2369 ni->ni_htctlchan, ni->ni_ht2ndchan);
2370 printf("\thtopmode %x htstbc %x chw %u\n",
2371 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2375 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2377 ieee80211_iterate_nodes(nt,
2378 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2382 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2384 struct ieee80211vap *vap;
2386 IEEE80211_LOCK_ASSERT(ic);
2388 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2389 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2390 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2394 ieee80211_notify_erp(struct ieee80211com *ic)
2397 ieee80211_notify_erp_locked(ic);
2398 IEEE80211_UNLOCK(ic);
2402 * Handle a station joining an 11g network.
2405 ieee80211_node_join_11g(struct ieee80211_node *ni)
2407 struct ieee80211com *ic = ni->ni_ic;
2409 IEEE80211_LOCK_ASSERT(ic);
2412 * Station isn't capable of short slot time. Bump
2413 * the count of long slot time stations and disable
2414 * use of short slot time. Note that the actual switch
2415 * over to long slot time use may not occur until the
2416 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2418 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2419 ic->ic_longslotsta++;
2420 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2421 "station needs long slot time, count %d",
2422 ic->ic_longslotsta);
2423 /* XXX vap's w/ conflicting needs won't work */
2424 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2426 * Don't force slot time when switched to turbo
2427 * mode as non-ERP stations won't be present; this
2428 * need only be done when on the normal G channel.
2430 ieee80211_set_shortslottime(ic, 0);
2434 * If the new station is not an ERP station
2435 * then bump the counter and enable protection
2438 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2440 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2441 "station is !ERP, %d non-ERP stations associated",
2444 * If station does not support short preamble
2445 * then we must enable use of Barker preamble.
2447 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2448 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2449 "%s", "station needs long preamble");
2450 ic->ic_flags |= IEEE80211_F_USEBARKER;
2451 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2454 * If protection is configured and this is the first
2455 * indication we should use protection, enable it.
2457 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2458 ic->ic_nonerpsta == 1 &&
2459 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2460 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2461 "%s: enable use of protection\n", __func__);
2462 ic->ic_flags |= IEEE80211_F_USEPROT;
2463 ieee80211_notify_erp_locked(ic);
2466 ni->ni_flags |= IEEE80211_NODE_ERP;
2470 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2472 struct ieee80211com *ic = ni->ni_ic;
2473 struct ieee80211vap *vap = ni->ni_vap;
2476 if (ni->ni_associd == 0) {
2479 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2481 * It would be good to search the bitmap
2482 * more efficiently, but this will do for now.
2484 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2485 if (!IEEE80211_AID_ISSET(vap, aid))
2488 if (aid >= vap->iv_max_aid) {
2489 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2490 ieee80211_node_leave(ni);
2493 ni->ni_associd = aid | 0xc000;
2494 ni->ni_jointime = time_uptime;
2496 IEEE80211_AID_SET(vap, ni->ni_associd);
2497 vap->iv_sta_assoc++;
2500 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2501 ieee80211_ht_node_join(ni);
2502 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2503 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2504 ieee80211_node_join_11g(ni);
2505 IEEE80211_UNLOCK(ic);
2511 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2512 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2513 IEEE80211_NODE_AID(ni),
2514 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2515 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2516 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2517 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2518 ni->ni_flags & IEEE80211_NODE_HT ?
2519 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2520 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2521 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2522 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2523 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2524 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2525 ", fast-frames" : "",
2526 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2530 ieee80211_node_setuptxparms(ni);
2531 ieee80211_ratectl_node_init(ni);
2532 /* give driver a chance to setup state like ni_txrate */
2533 if (ic->ic_newassoc != NULL)
2534 ic->ic_newassoc(ni, newassoc);
2535 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2536 /* tell the authenticator about new station */
2537 if (vap->iv_auth->ia_node_join != NULL)
2538 vap->iv_auth->ia_node_join(ni);
2539 ieee80211_notify_node_join(ni,
2540 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2544 disable_protection(struct ieee80211com *ic)
2546 KASSERT(ic->ic_nonerpsta == 0 &&
2547 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2548 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2551 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2552 /* XXX verify mode? */
2553 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2554 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2555 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2557 ieee80211_notify_erp_locked(ic);
2561 * Handle a station leaving an 11g network.
2564 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2566 struct ieee80211com *ic = ni->ni_ic;
2568 IEEE80211_LOCK_ASSERT(ic);
2570 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2571 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2572 ic->ic_bsschan->ic_flags));
2575 * If a long slot station do the slot time bookkeeping.
2577 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2578 KASSERT(ic->ic_longslotsta > 0,
2579 ("bogus long slot station count %d", ic->ic_longslotsta));
2580 ic->ic_longslotsta--;
2581 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2582 "long slot time station leaves, count now %d",
2583 ic->ic_longslotsta);
2584 if (ic->ic_longslotsta == 0) {
2586 * Re-enable use of short slot time if supported
2587 * and not operating in IBSS mode (per spec).
2589 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2590 ic->ic_opmode != IEEE80211_M_IBSS) {
2591 IEEE80211_DPRINTF(ni->ni_vap,
2592 IEEE80211_MSG_ASSOC,
2593 "%s: re-enable use of short slot time\n",
2595 ieee80211_set_shortslottime(ic, 1);
2600 * If a non-ERP station do the protection-related bookkeeping.
2602 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2603 KASSERT(ic->ic_nonerpsta > 0,
2604 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2606 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2607 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2608 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2609 " (non-ERP sta present)" : "");
2610 if (ic->ic_nonerpsta == 0 &&
2611 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2612 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2613 "%s: disable use of protection\n", __func__);
2614 disable_protection(ic);
2620 * Time out presence of an overlapping bss with non-ERP
2621 * stations. When operating in hostap mode we listen for
2622 * beacons from other stations and if we identify a non-ERP
2623 * station is present we enable protection. To identify
2624 * when all non-ERP stations are gone we time out this
2628 ieee80211_erp_timeout(struct ieee80211com *ic)
2631 IEEE80211_LOCK_ASSERT(ic);
2633 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2634 time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2636 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2637 "%s", "age out non-ERP sta present on channel");
2639 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2640 if (ic->ic_nonerpsta == 0)
2641 disable_protection(ic);
2646 * Handle bookkeeping for station deauthentication/disassociation
2647 * when operating as an ap.
2650 ieee80211_node_leave(struct ieee80211_node *ni)
2652 struct ieee80211com *ic = ni->ni_ic;
2653 struct ieee80211vap *vap = ni->ni_vap;
2654 struct ieee80211_node_table *nt = ni->ni_table;
2656 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2657 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2659 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2660 ("unexpected operating mode %u", vap->iv_opmode));
2662 * If node wasn't previously associated all
2663 * we need to do is reclaim the reference.
2665 /* XXX ibss mode bypasses 11g and notification */
2666 if (ni->ni_associd == 0)
2669 * Tell the authenticator the station is leaving.
2670 * Note that we must do this before yanking the
2671 * association id as the authenticator uses the
2672 * associd to locate it's state block.
2674 if (vap->iv_auth->ia_node_leave != NULL)
2675 vap->iv_auth->ia_node_leave(ni);
2678 IEEE80211_AID_CLR(vap, ni->ni_associd);
2680 vap->iv_sta_assoc--;
2683 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2684 ieee80211_ht_node_leave(ni);
2685 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2686 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2687 ieee80211_node_leave_11g(ni);
2688 IEEE80211_UNLOCK(ic);
2690 * Cleanup station state. In particular clear various
2691 * state that might otherwise be reused if the node
2692 * is reused before the reference count goes to zero
2693 * (and memory is reclaimed).
2695 ieee80211_sta_leave(ni);
2698 * Remove the node from any table it's recorded in and
2699 * drop the caller's reference. Removal from the table
2700 * is important to insure the node is not reprocessed
2704 IEEE80211_NODE_LOCK(nt);
2705 node_reclaim(nt, ni);
2706 IEEE80211_NODE_UNLOCK(nt);
2708 ieee80211_free_node(ni);
2712 struct ieee80211vap *vap;
2714 uint32_t rssi_total;
2718 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2720 struct rssiinfo *info = arg;
2721 struct ieee80211vap *vap = ni->ni_vap;
2724 if (info->vap != vap)
2726 /* only associated stations */
2727 if (ni->ni_associd == 0)
2729 rssi = vap->iv_ic->ic_node_getrssi(ni);
2731 info->rssi_samples++;
2732 info->rssi_total += rssi;
2737 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2739 struct rssiinfo *info = arg;
2740 struct ieee80211vap *vap = ni->ni_vap;
2743 if (info->vap != vap)
2745 /* only neighbors */
2746 /* XXX check bssid */
2747 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2749 rssi = vap->iv_ic->ic_node_getrssi(ni);
2751 info->rssi_samples++;
2752 info->rssi_total += rssi;
2756 #ifdef IEEE80211_SUPPORT_MESH
2758 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
2760 struct rssiinfo *info = arg;
2761 struct ieee80211vap *vap = ni->ni_vap;
2764 if (info->vap != vap)
2766 /* only neighbors that peered successfully */
2767 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
2769 rssi = vap->iv_ic->ic_node_getrssi(ni);
2771 info->rssi_samples++;
2772 info->rssi_total += rssi;
2775 #endif /* IEEE80211_SUPPORT_MESH */
2778 ieee80211_getrssi(struct ieee80211vap *vap)
2780 #define NZ(x) ((x) == 0 ? 1 : (x))
2781 struct ieee80211com *ic = vap->iv_ic;
2782 struct rssiinfo info;
2784 info.rssi_total = 0;
2785 info.rssi_samples = 0;
2787 switch (vap->iv_opmode) {
2788 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
2789 case IEEE80211_M_AHDEMO: /* average of all neighbors */
2790 ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info);
2792 case IEEE80211_M_HOSTAP: /* average of all associated stations */
2793 ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info);
2795 #ifdef IEEE80211_SUPPORT_MESH
2796 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
2797 ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info);
2800 case IEEE80211_M_MONITOR: /* XXX */
2801 case IEEE80211_M_STA: /* use stats from associated ap */
2803 if (vap->iv_bss != NULL)
2804 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
2805 info.rssi_samples = 1;
2808 return info.rssi_total / NZ(info.rssi_samples);
2813 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
2816 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
2818 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
2819 /* for non-station mode return avg'd rssi accounting */
2820 if (vap->iv_opmode != IEEE80211_M_STA)
2821 *rssi = ieee80211_getrssi(vap);