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);
775 * Expand scan state into node's format.
776 * XXX may not need all this stuff
778 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
779 ni->ni_esslen = se->se_ssid[1];
780 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
781 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
782 ni->ni_intval = se->se_intval;
783 ni->ni_capinfo = se->se_capinfo;
785 ni->ni_timoff = se->se_timoff;
786 ni->ni_fhdwell = se->se_fhdwell;
787 ni->ni_fhindex = se->se_fhindex;
788 ni->ni_erp = se->se_erp;
789 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
790 ni->ni_noise = se->se_noise;
791 if (vap->iv_opmode == IEEE80211_M_STA) {
792 /* NB: only infrastructure mode requires an associd */
793 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
796 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
797 ieee80211_ies_expand(&ni->ni_ies);
798 #ifdef IEEE80211_SUPPORT_SUPERG
799 if (ni->ni_ies.ath_ie != NULL)
800 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
802 if (ni->ni_ies.htcap_ie != NULL)
803 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
804 if (ni->ni_ies.htinfo_ie != NULL)
805 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
806 #ifdef IEEE80211_SUPPORT_MESH
807 if (ni->ni_ies.meshid_ie != NULL)
808 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
810 #ifdef IEEE80211_SUPPORT_TDMA
811 if (ni->ni_ies.tdma_ie != NULL)
812 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
816 vap->iv_dtim_period = se->se_dtimperiod;
817 vap->iv_dtim_count = 0;
819 /* NB: must be after ni_chan is setup */
820 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
822 if (ieee80211_iserp_rateset(&ni->ni_rates))
823 ni->ni_flags |= IEEE80211_NODE_ERP;
824 ieee80211_node_setuptxparms(ni);
825 ieee80211_ratectl_node_init(ni);
827 return ieee80211_sta_join1(ieee80211_ref_node(ni));
831 * Leave the specified IBSS/BSS network. The node is assumed to
832 * be passed in with a held reference.
835 ieee80211_sta_leave(struct ieee80211_node *ni)
837 struct ieee80211com *ic = ni->ni_ic;
839 ic->ic_node_cleanup(ni);
840 ieee80211_notify_node_leave(ni);
844 * Send a deauthenticate frame and drop the station.
847 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
849 /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */
850 ieee80211_ref_node(ni);
851 if (ni->ni_associd != 0)
852 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
853 ieee80211_node_leave(ni);
854 ieee80211_free_node(ni);
857 static struct ieee80211_node *
858 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
860 struct ieee80211_node *ni;
862 ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node),
863 M_80211_NODE, M_NOWAIT | M_ZERO);
868 * Initialize an ie blob with the specified data. If previous
869 * data exists re-use the data block. As a side effect we clear
870 * all references to specific ie's; the caller is required to
874 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
876 /* NB: assumes data+len are the last fields */
877 memset(ies, 0, offsetof(struct ieee80211_ies, data));
878 if (ies->data != NULL && ies->len != len) {
879 /* data size changed */
880 free(ies->data, M_80211_NODE_IE);
883 if (ies->data == NULL) {
884 ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT);
885 if (ies->data == NULL) {
887 /* NB: pointers have already been zero'd above */
891 memcpy(ies->data, data, len);
897 * Reclaim storage for an ie blob.
900 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
902 if (ies->data != NULL)
903 free(ies->data, M_80211_NODE_IE);
907 * Expand an ie blob data contents and to fillin individual
908 * ie pointers. The data blob is assumed to be well-formed;
909 * we don't do any validity checking of ie lengths.
912 ieee80211_ies_expand(struct ieee80211_ies *ies)
921 case IEEE80211_ELEMID_VENDOR:
924 else if (iswmeoui(ie))
926 #ifdef IEEE80211_SUPPORT_SUPERG
927 else if (isatherosoui(ie))
930 #ifdef IEEE80211_SUPPORT_TDMA
931 else if (istdmaoui(ie))
935 case IEEE80211_ELEMID_RSN:
938 case IEEE80211_ELEMID_HTCAP:
941 #ifdef IEEE80211_SUPPORT_MESH
942 case IEEE80211_ELEMID_MESHID:
953 * Reclaim any resources in a node and reset any critical
954 * state. Typically nodes are free'd immediately after,
955 * but in some cases the storage may be reused so we need
956 * to insure consistent state (should probably fix that).
959 node_cleanup(struct ieee80211_node *ni)
961 #define N(a) (sizeof(a)/sizeof(a[0]))
962 struct ieee80211vap *vap = ni->ni_vap;
963 struct ieee80211com *ic = ni->ni_ic;
966 /* NB: preserve ni_table */
967 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
968 if (vap->iv_opmode != IEEE80211_M_STA)
970 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
971 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
972 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
975 * Cleanup any HT-related state.
977 if (ni->ni_flags & IEEE80211_NODE_HT)
978 ieee80211_ht_node_cleanup(ni);
979 #ifdef IEEE80211_SUPPORT_SUPERG
980 else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
981 ieee80211_ff_node_cleanup(ni);
983 #ifdef IEEE80211_SUPPORT_MESH
985 * Cleanup any mesh-related state.
987 if (vap->iv_opmode == IEEE80211_M_MBSS)
988 ieee80211_mesh_node_cleanup(ni);
991 * Clear any staging queue entries.
993 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
996 * Clear AREF flag that marks the authorization refcnt bump
997 * has happened. This is probably not needed as the node
998 * should always be removed from the table so not found but
999 * do it just in case.
1000 * Likewise clear the ASSOCID flag as these flags are intended
1001 * to be managed in tandem.
1003 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1006 * Drain power save queue and, if needed, clear TIM.
1008 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1009 vap->iv_set_tim(ni, 0);
1012 if (ni->ni_challenge != NULL) {
1013 free(ni->ni_challenge, M_80211_NODE);
1014 ni->ni_challenge = NULL;
1017 * Preserve SSID, WPA, and WME ie's so the bss node is
1018 * reusable during a re-auth/re-assoc state transition.
1019 * If we remove these data they will not be recreated
1020 * because they come from a probe-response or beacon frame
1021 * which cannot be expected prior to the association-response.
1022 * This should not be an issue when operating in other modes
1023 * as stations leaving always go through a full state transition
1024 * which will rebuild this state.
1026 * XXX does this leave us open to inheriting old state?
1028 for (i = 0; i < N(ni->ni_rxfrag); i++)
1029 if (ni->ni_rxfrag[i] != NULL) {
1030 m_freem(ni->ni_rxfrag[i]);
1031 ni->ni_rxfrag[i] = NULL;
1034 * Must be careful here to remove any key map entry w/o a LOR.
1036 ieee80211_node_delucastkey(ni);
1041 node_free(struct ieee80211_node *ni)
1043 struct ieee80211com *ic = ni->ni_ic;
1045 ieee80211_ratectl_node_deinit(ni);
1046 ic->ic_node_cleanup(ni);
1047 ieee80211_ies_cleanup(&ni->ni_ies);
1048 ieee80211_psq_cleanup(&ni->ni_psq);
1049 free(ni, M_80211_NODE);
1053 node_age(struct ieee80211_node *ni)
1055 struct ieee80211vap *vap = ni->ni_vap;
1057 IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta);
1060 * Age frames on the power save queue.
1062 if (ieee80211_node_psq_age(ni) != 0 &&
1063 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1064 vap->iv_set_tim(ni, 0);
1066 * Age out HT resources (e.g. frames on the
1067 * A-MPDU reorder queues).
1069 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1070 ieee80211_ht_node_age(ni);
1074 node_getrssi(const struct ieee80211_node *ni)
1076 uint32_t avgrssi = ni->ni_avgrssi;
1079 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1081 rssi = IEEE80211_RSSI_GET(avgrssi);
1082 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1086 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1088 *rssi = node_getrssi(ni);
1089 *noise = ni->ni_noise;
1093 node_getmimoinfo(const struct ieee80211_node *ni,
1094 struct ieee80211_mimo_info *info)
1100 bzero(info, sizeof(*info));
1102 for (i = 0; i < ni->ni_mimo_chains; i++) {
1103 avgrssi = ni->ni_mimo_rssi_ctl[i];
1104 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1107 rssi = IEEE80211_RSSI_GET(avgrssi);
1108 info->rssi[i] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1110 info->noise[i] = ni->ni_mimo_noise_ctl[i];
1113 /* XXX ext radios? */
1118 struct ieee80211_node *
1119 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1120 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1122 struct ieee80211com *ic = nt->nt_ic;
1123 struct ieee80211_node *ni;
1126 ni = ic->ic_node_alloc(vap, macaddr);
1128 vap->iv_stats.is_rx_nodealloc++;
1132 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1133 "%s %p<%s> in %s table\n", __func__, ni,
1134 ether_sprintf(macaddr), nt->nt_name);
1136 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1137 hash = IEEE80211_NODE_HASH(ic, macaddr);
1138 ieee80211_node_initref(ni); /* mark referenced */
1139 ni->ni_chan = IEEE80211_CHAN_ANYC;
1140 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1141 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1142 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1143 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1144 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1145 ni->ni_inact_reload = nt->nt_inact_init;
1146 ni->ni_inact = ni->ni_inact_reload;
1147 ni->ni_ath_defkeyix = 0x7fff;
1148 ieee80211_psq_init(&ni->ni_psq, "unknown");
1149 #ifdef IEEE80211_SUPPORT_MESH
1150 if (vap->iv_opmode == IEEE80211_M_MBSS)
1151 ieee80211_mesh_node_init(vap, ni);
1153 IEEE80211_NODE_LOCK(nt);
1154 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1155 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1159 IEEE80211_NODE_UNLOCK(nt);
1161 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1162 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1164 ieee80211_ratectl_node_init(ni);
1170 * Craft a temporary node suitable for sending a management frame
1171 * to the specified station. We craft only as much state as we
1172 * need to do the work since the node will be immediately reclaimed
1173 * once the send completes.
1175 struct ieee80211_node *
1176 ieee80211_tmp_node(struct ieee80211vap *vap,
1177 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1179 struct ieee80211com *ic = vap->iv_ic;
1180 struct ieee80211_node *ni;
1182 ni = ic->ic_node_alloc(vap, macaddr);
1184 struct ieee80211_node *bss = vap->iv_bss;
1186 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1187 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1189 ni->ni_table = NULL; /* NB: pedantic */
1190 ni->ni_ic = ic; /* NB: needed to set channel */
1193 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1194 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1195 ieee80211_node_initref(ni); /* mark referenced */
1196 /* NB: required by ieee80211_fix_rate */
1197 ieee80211_node_set_chan(ni, bss->ni_chan);
1198 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1199 IEEE80211_KEYIX_NONE);
1200 ni->ni_txpower = bss->ni_txpower;
1201 /* XXX optimize away */
1202 ieee80211_psq_init(&ni->ni_psq, "unknown");
1204 ieee80211_ratectl_node_init(ni);
1207 vap->iv_stats.is_rx_nodealloc++;
1212 struct ieee80211_node *
1213 ieee80211_dup_bss(struct ieee80211vap *vap,
1214 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1216 struct ieee80211com *ic = vap->iv_ic;
1217 struct ieee80211_node *ni;
1219 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1221 struct ieee80211_node *bss = vap->iv_bss;
1223 * Inherit from iv_bss.
1226 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1227 ieee80211_node_set_chan(ni, bss->ni_chan);
1233 * Create a bss node for a legacy WDS vap. The far end does
1234 * not associate so we just create create a new node and
1235 * simulate an association. The caller is responsible for
1236 * installing the node as the bss node and handling any further
1237 * setup work like authorizing the port.
1239 struct ieee80211_node *
1240 ieee80211_node_create_wds(struct ieee80211vap *vap,
1241 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1243 struct ieee80211com *ic = vap->iv_ic;
1244 struct ieee80211_node *ni;
1246 /* XXX check if node already in sta table? */
1247 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1249 ni->ni_wdsvap = vap;
1250 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1252 * Inherit any manually configured settings.
1254 copy_bss(ni, vap->iv_bss);
1255 ieee80211_node_set_chan(ni, chan);
1256 /* NB: propagate ssid so available to WPA supplicant */
1257 ni->ni_esslen = vap->iv_des_ssid[0].len;
1258 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1259 /* NB: no associd for peer */
1261 * There are no management frames to use to
1262 * discover neighbor capabilities, so blindly
1263 * propagate the local configuration.
1265 if (vap->iv_flags & IEEE80211_F_WME)
1266 ni->ni_flags |= IEEE80211_NODE_QOS;
1267 #ifdef IEEE80211_SUPPORT_SUPERG
1268 if (vap->iv_flags & IEEE80211_F_FF)
1269 ni->ni_flags |= IEEE80211_NODE_FF;
1271 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1272 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1274 * Device is HT-capable and HT is enabled for
1275 * the vap; setup HT operation. On return
1276 * ni_chan will be adjusted to an HT channel.
1278 ieee80211_ht_wds_init(ni);
1280 struct ieee80211_channel *c = ni->ni_chan;
1282 * Force a legacy channel to be used.
1284 c = ieee80211_find_channel(ic,
1285 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1286 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1287 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1294 struct ieee80211_node *
1295 #ifdef IEEE80211_DEBUG_REFCNT
1296 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1297 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1299 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1300 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1303 struct ieee80211_node *ni;
1306 IEEE80211_NODE_LOCK_ASSERT(nt);
1308 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1309 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1310 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1311 ieee80211_ref_node(ni); /* mark referenced */
1312 #ifdef IEEE80211_DEBUG_REFCNT
1313 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1314 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1316 ni, ether_sprintf(ni->ni_macaddr),
1317 ieee80211_node_refcnt(ni));
1325 struct ieee80211_node *
1326 #ifdef IEEE80211_DEBUG_REFCNT
1327 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1328 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1330 ieee80211_find_node(struct ieee80211_node_table *nt,
1331 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1334 struct ieee80211_node *ni;
1336 IEEE80211_NODE_LOCK(nt);
1337 ni = ieee80211_find_node_locked(nt, macaddr);
1338 IEEE80211_NODE_UNLOCK(nt);
1342 struct ieee80211_node *
1343 #ifdef IEEE80211_DEBUG_REFCNT
1344 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1345 const struct ieee80211vap *vap,
1346 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1348 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1349 const struct ieee80211vap *vap,
1350 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1353 struct ieee80211_node *ni;
1356 IEEE80211_NODE_LOCK_ASSERT(nt);
1358 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1359 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1360 if (ni->ni_vap == vap &&
1361 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1362 ieee80211_ref_node(ni); /* mark referenced */
1363 #ifdef IEEE80211_DEBUG_REFCNT
1364 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1365 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1367 ni, ether_sprintf(ni->ni_macaddr),
1368 ieee80211_node_refcnt(ni));
1376 struct ieee80211_node *
1377 #ifdef IEEE80211_DEBUG_REFCNT
1378 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1379 const struct ieee80211vap *vap,
1380 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1382 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1383 const struct ieee80211vap *vap,
1384 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1387 struct ieee80211_node *ni;
1389 IEEE80211_NODE_LOCK(nt);
1390 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1391 IEEE80211_NODE_UNLOCK(nt);
1396 * Fake up a node; this handles node discovery in adhoc mode.
1397 * Note that for the driver's benefit we we treat this like
1398 * an association so the driver has an opportunity to setup
1399 * it's private state.
1401 struct ieee80211_node *
1402 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1403 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1405 struct ieee80211_node *ni;
1407 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1408 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1409 ni = ieee80211_dup_bss(vap, macaddr);
1411 struct ieee80211com *ic = vap->iv_ic;
1413 /* XXX no rate negotiation; just dup */
1414 ni->ni_rates = vap->iv_bss->ni_rates;
1415 if (ieee80211_iserp_rateset(&ni->ni_rates))
1416 ni->ni_flags |= IEEE80211_NODE_ERP;
1417 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1419 * In adhoc demo mode there are no management
1420 * frames to use to discover neighbor capabilities,
1421 * so blindly propagate the local configuration
1422 * so we can do interesting things (e.g. use
1423 * WME to disable ACK's).
1425 if (vap->iv_flags & IEEE80211_F_WME)
1426 ni->ni_flags |= IEEE80211_NODE_QOS;
1427 #ifdef IEEE80211_SUPPORT_SUPERG
1428 if (vap->iv_flags & IEEE80211_F_FF)
1429 ni->ni_flags |= IEEE80211_NODE_FF;
1432 ieee80211_node_setuptxparms(ni);
1433 ieee80211_ratectl_node_init(ni);
1434 if (ic->ic_newassoc != NULL)
1435 ic->ic_newassoc(ni, 1);
1436 /* XXX not right for 802.1x/WPA */
1437 ieee80211_node_authorize(ni);
1443 ieee80211_init_neighbor(struct ieee80211_node *ni,
1444 const struct ieee80211_frame *wh,
1445 const struct ieee80211_scanparams *sp)
1447 ni->ni_esslen = sp->ssid[1];
1448 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1449 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1450 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1451 ni->ni_intval = sp->bintval;
1452 ni->ni_capinfo = sp->capinfo;
1453 ni->ni_chan = ni->ni_ic->ic_curchan;
1454 ni->ni_fhdwell = sp->fhdwell;
1455 ni->ni_fhindex = sp->fhindex;
1456 ni->ni_erp = sp->erp;
1457 ni->ni_timoff = sp->timoff;
1458 #ifdef IEEE80211_SUPPORT_MESH
1459 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1460 ieee80211_mesh_init_neighbor(ni, wh, sp);
1462 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1463 ieee80211_ies_expand(&ni->ni_ies);
1464 if (ni->ni_ies.wme_ie != NULL)
1465 ni->ni_flags |= IEEE80211_NODE_QOS;
1467 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1468 #ifdef IEEE80211_SUPPORT_SUPERG
1469 if (ni->ni_ies.ath_ie != NULL)
1470 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1474 /* NB: must be after ni_chan is setup */
1475 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1476 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1477 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1481 * Do node discovery in adhoc mode on receipt of a beacon
1482 * or probe response frame. Note that for the driver's
1483 * benefit we we treat this like an association so the
1484 * driver has an opportunity to setup it's private state.
1486 struct ieee80211_node *
1487 ieee80211_add_neighbor(struct ieee80211vap *vap,
1488 const struct ieee80211_frame *wh,
1489 const struct ieee80211_scanparams *sp)
1491 struct ieee80211_node *ni;
1493 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1494 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1495 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1497 struct ieee80211com *ic = vap->iv_ic;
1499 ieee80211_init_neighbor(ni, wh, sp);
1500 if (ieee80211_iserp_rateset(&ni->ni_rates))
1501 ni->ni_flags |= IEEE80211_NODE_ERP;
1502 ieee80211_node_setuptxparms(ni);
1503 ieee80211_ratectl_node_init(ni);
1504 if (ic->ic_newassoc != NULL)
1505 ic->ic_newassoc(ni, 1);
1506 /* XXX not right for 802.1x/WPA */
1507 ieee80211_node_authorize(ni);
1512 #define IS_PROBEREQ(wh) \
1513 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1514 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1515 #define IS_BCAST_PROBEREQ(wh) \
1516 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1517 ((const struct ieee80211_frame *)(wh))->i_addr3))
1519 static __inline struct ieee80211_node *
1520 _find_rxnode(struct ieee80211_node_table *nt,
1521 const struct ieee80211_frame_min *wh)
1523 if (IS_BCAST_PROBEREQ(wh))
1524 return NULL; /* spam bcast probe req to all vap's */
1525 return ieee80211_find_node_locked(nt, wh->i_addr2);
1529 * Locate the node for sender, track state, and then pass the
1530 * (referenced) node up to the 802.11 layer for its use. Note
1531 * we can return NULL if the sender is not in the table.
1533 struct ieee80211_node *
1534 #ifdef IEEE80211_DEBUG_REFCNT
1535 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1536 const struct ieee80211_frame_min *wh, const char *func, int line)
1538 ieee80211_find_rxnode(struct ieee80211com *ic,
1539 const struct ieee80211_frame_min *wh)
1542 struct ieee80211_node_table *nt;
1543 struct ieee80211_node *ni;
1546 IEEE80211_NODE_LOCK(nt);
1547 ni = _find_rxnode(nt, wh);
1548 IEEE80211_NODE_UNLOCK(nt);
1554 * Like ieee80211_find_rxnode but use the supplied h/w
1555 * key index as a hint to locate the node in the key
1556 * mapping table. If an entry is present at the key
1557 * index we return it; otherwise do a normal lookup and
1558 * update the mapping table if the station has a unicast
1559 * key assigned to it.
1561 struct ieee80211_node *
1562 #ifdef IEEE80211_DEBUG_REFCNT
1563 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1564 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1565 const char *func, int line)
1567 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1568 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1571 struct ieee80211_node_table *nt;
1572 struct ieee80211_node *ni;
1575 IEEE80211_NODE_LOCK(nt);
1576 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1577 ni = nt->nt_keyixmap[keyix];
1581 ni = _find_rxnode(nt, wh);
1582 if (ni != NULL && nt->nt_keyixmap != NULL) {
1584 * If the station has a unicast key cache slot
1585 * assigned update the key->node mapping table.
1587 keyix = ni->ni_ucastkey.wk_rxkeyix;
1588 /* XXX can keyixmap[keyix] != NULL? */
1589 if (keyix < nt->nt_keyixmax &&
1590 nt->nt_keyixmap[keyix] == NULL) {
1591 IEEE80211_DPRINTF(ni->ni_vap,
1593 "%s: add key map entry %p<%s> refcnt %d\n",
1594 __func__, ni, ether_sprintf(ni->ni_macaddr),
1595 ieee80211_node_refcnt(ni)+1);
1596 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1600 if (IS_BCAST_PROBEREQ(wh))
1601 ni = NULL; /* spam bcast probe req to all vap's */
1603 ieee80211_ref_node(ni);
1605 IEEE80211_NODE_UNLOCK(nt);
1609 #undef IS_BCAST_PROBEREQ
1613 * Return a reference to the appropriate node for sending
1614 * a data frame. This handles node discovery in adhoc networks.
1616 struct ieee80211_node *
1617 #ifdef IEEE80211_DEBUG_REFCNT
1618 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1619 const uint8_t macaddr[IEEE80211_ADDR_LEN],
1620 const char *func, int line)
1622 ieee80211_find_txnode(struct ieee80211vap *vap,
1623 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1626 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
1627 struct ieee80211_node *ni;
1630 * The destination address should be in the node table
1631 * unless this is a multicast/broadcast frame. We can
1632 * also optimize station mode operation, all frames go
1635 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
1636 IEEE80211_NODE_LOCK(nt);
1637 if (vap->iv_opmode == IEEE80211_M_STA ||
1638 vap->iv_opmode == IEEE80211_M_WDS ||
1639 IEEE80211_IS_MULTICAST(macaddr))
1640 ni = ieee80211_ref_node(vap->iv_bss);
1642 ni = ieee80211_find_node_locked(nt, macaddr);
1643 IEEE80211_NODE_UNLOCK(nt);
1646 if (vap->iv_opmode == IEEE80211_M_IBSS ||
1647 vap->iv_opmode == IEEE80211_M_AHDEMO) {
1649 * In adhoc mode cons up a node for the destination.
1650 * Note that we need an additional reference for the
1651 * caller to be consistent with
1652 * ieee80211_find_node_locked.
1654 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
1656 (void) ieee80211_ref_node(ni);
1658 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
1659 "no node, discard frame (%s)", __func__);
1660 vap->iv_stats.is_tx_nonode++;
1667 _ieee80211_free_node(struct ieee80211_node *ni)
1669 struct ieee80211_node_table *nt = ni->ni_table;
1672 * NB: careful about referencing the vap as it may be
1673 * gone if the last reference was held by a driver.
1674 * We know the com will always be present so it's safe
1675 * to use ni_ic below to reclaim resources.
1678 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1679 "%s %p<%s> in %s table\n", __func__, ni,
1680 ether_sprintf(ni->ni_macaddr),
1681 nt != NULL ? nt->nt_name : "<gone>");
1683 if (ni->ni_associd != 0) {
1684 struct ieee80211vap *vap = ni->ni_vap;
1685 if (vap->iv_aid_bitmap != NULL)
1686 IEEE80211_AID_CLR(vap, ni->ni_associd);
1689 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1690 LIST_REMOVE(ni, ni_hash);
1692 ni->ni_ic->ic_node_free(ni);
1696 #ifdef IEEE80211_DEBUG_REFCNT
1697 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
1699 ieee80211_free_node(struct ieee80211_node *ni)
1702 struct ieee80211_node_table *nt = ni->ni_table;
1704 #ifdef IEEE80211_DEBUG_REFCNT
1705 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1706 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
1707 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
1710 IEEE80211_NODE_LOCK(nt);
1711 if (ieee80211_node_dectestref(ni)) {
1713 * Last reference, reclaim state.
1715 _ieee80211_free_node(ni);
1716 } else if (ieee80211_node_refcnt(ni) == 1 &&
1717 nt->nt_keyixmap != NULL) {
1718 ieee80211_keyix keyix;
1720 * Check for a last reference in the key mapping table.
1722 keyix = ni->ni_ucastkey.wk_rxkeyix;
1723 if (keyix < nt->nt_keyixmax &&
1724 nt->nt_keyixmap[keyix] == ni) {
1725 IEEE80211_DPRINTF(ni->ni_vap,
1727 "%s: %p<%s> clear key map entry", __func__,
1728 ni, ether_sprintf(ni->ni_macaddr));
1729 nt->nt_keyixmap[keyix] = NULL;
1730 ieee80211_node_decref(ni); /* XXX needed? */
1731 _ieee80211_free_node(ni);
1734 IEEE80211_NODE_UNLOCK(nt);
1736 if (ieee80211_node_dectestref(ni))
1737 _ieee80211_free_node(ni);
1742 * Reclaim a unicast key and clear any key cache state.
1745 ieee80211_node_delucastkey(struct ieee80211_node *ni)
1747 struct ieee80211com *ic = ni->ni_ic;
1748 struct ieee80211_node_table *nt = &ic->ic_sta;
1749 struct ieee80211_node *nikey;
1750 ieee80211_keyix keyix;
1751 int isowned, status;
1754 * NB: We must beware of LOR here; deleting the key
1755 * can cause the crypto layer to block traffic updates
1756 * which can generate a LOR against the node table lock;
1757 * grab it here and stash the key index for our use below.
1759 * Must also beware of recursion on the node table lock.
1760 * When called from node_cleanup we may already have
1761 * the node table lock held. Unfortunately there's no
1762 * way to separate out this path so we must do this
1765 isowned = IEEE80211_NODE_IS_LOCKED(nt);
1767 IEEE80211_NODE_LOCK(nt);
1769 status = 1; /* NB: success */
1770 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
1771 keyix = ni->ni_ucastkey.wk_rxkeyix;
1772 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
1773 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
1774 nikey = nt->nt_keyixmap[keyix];
1775 nt->nt_keyixmap[keyix] = NULL;
1779 IEEE80211_NODE_UNLOCK(nt);
1781 if (nikey != NULL) {
1782 KASSERT(nikey == ni,
1783 ("key map out of sync, ni %p nikey %p", ni, nikey));
1784 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1785 "%s: delete key map entry %p<%s> refcnt %d\n",
1786 __func__, ni, ether_sprintf(ni->ni_macaddr),
1787 ieee80211_node_refcnt(ni)-1);
1788 ieee80211_free_node(ni);
1794 * Reclaim a node. If this is the last reference count then
1795 * do the normal free work. Otherwise remove it from the node
1796 * table and mark it gone by clearing the back-reference.
1799 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1801 ieee80211_keyix keyix;
1803 IEEE80211_NODE_LOCK_ASSERT(nt);
1805 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1806 "%s: remove %p<%s> from %s table, refcnt %d\n",
1807 __func__, ni, ether_sprintf(ni->ni_macaddr),
1808 nt->nt_name, ieee80211_node_refcnt(ni)-1);
1810 * Clear any entry in the unicast key mapping table.
1811 * We need to do it here so rx lookups don't find it
1812 * in the mapping table even if it's not in the hash
1813 * table. We cannot depend on the mapping table entry
1814 * being cleared because the node may not be free'd.
1816 keyix = ni->ni_ucastkey.wk_rxkeyix;
1817 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
1818 nt->nt_keyixmap[keyix] == ni) {
1819 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1820 "%s: %p<%s> clear key map entry %u\n",
1821 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
1822 nt->nt_keyixmap[keyix] = NULL;
1823 ieee80211_node_decref(ni); /* NB: don't need free */
1825 if (!ieee80211_node_dectestref(ni)) {
1827 * Other references are present, just remove the
1828 * node from the table so it cannot be found. When
1829 * the references are dropped storage will be
1832 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1833 LIST_REMOVE(ni, ni_hash);
1834 ni->ni_table = NULL; /* clear reference */
1836 _ieee80211_free_node(ni);
1840 * Node table support.
1844 ieee80211_node_table_init(struct ieee80211com *ic,
1845 struct ieee80211_node_table *nt,
1846 const char *name, int inact, int keyixmax)
1848 struct ifnet *ifp = ic->ic_ifp;
1851 IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname);
1852 IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname);
1853 TAILQ_INIT(&nt->nt_node);
1856 nt->nt_inact_init = inact;
1857 nt->nt_keyixmax = keyixmax;
1858 if (nt->nt_keyixmax > 0) {
1859 nt->nt_keyixmap = (struct ieee80211_node **) malloc(
1860 keyixmax * sizeof(struct ieee80211_node *),
1861 M_80211_NODE, M_NOWAIT | M_ZERO);
1862 if (nt->nt_keyixmap == NULL)
1863 if_printf(ic->ic_ifp,
1864 "Cannot allocate key index map with %u entries\n",
1867 nt->nt_keyixmap = NULL;
1871 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
1872 struct ieee80211vap *match)
1874 struct ieee80211_node *ni, *next;
1876 IEEE80211_NODE_LOCK(nt);
1877 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
1878 if (match != NULL && ni->ni_vap != match)
1880 /* XXX can this happen? if so need's work */
1881 if (ni->ni_associd != 0) {
1882 struct ieee80211vap *vap = ni->ni_vap;
1884 if (vap->iv_auth->ia_node_leave != NULL)
1885 vap->iv_auth->ia_node_leave(ni);
1886 if (vap->iv_aid_bitmap != NULL)
1887 IEEE80211_AID_CLR(vap, ni->ni_associd);
1889 ni->ni_wdsvap = NULL; /* clear reference */
1890 node_reclaim(nt, ni);
1892 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
1894 * Make a separate pass to clear references to this vap
1895 * held by DWDS entries. They will not be matched above
1896 * because ni_vap will point to the ap vap but we still
1897 * need to clear ni_wdsvap when the WDS vap is destroyed
1900 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
1901 if (ni->ni_wdsvap == match)
1902 ni->ni_wdsvap = NULL;
1904 IEEE80211_NODE_UNLOCK(nt);
1908 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
1910 ieee80211_node_table_reset(nt, NULL);
1911 if (nt->nt_keyixmap != NULL) {
1913 /* XXX verify all entries are NULL */
1915 for (i = 0; i < nt->nt_keyixmax; i++)
1916 if (nt->nt_keyixmap[i] != NULL)
1917 printf("%s: %s[%u] still active\n", __func__,
1920 free(nt->nt_keyixmap, M_80211_NODE);
1921 nt->nt_keyixmap = NULL;
1923 IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt);
1924 IEEE80211_NODE_LOCK_DESTROY(nt);
1928 * Timeout inactive stations and do related housekeeping.
1929 * Note that we cannot hold the node lock while sending a
1930 * frame as this would lead to a LOR. Instead we use a
1931 * generation number to mark nodes that we've scanned and
1932 * drop the lock and restart a scan if we have to time out
1933 * a node. Since we are single-threaded by virtue of
1934 * controlling the inactivity timer we can be sure this will
1935 * process each node only once.
1938 ieee80211_timeout_stations(struct ieee80211com *ic)
1940 struct ieee80211_node_table *nt = &ic->ic_sta;
1941 struct ieee80211vap *vap;
1942 struct ieee80211_node *ni;
1945 IEEE80211_NODE_ITERATE_LOCK(nt);
1946 gen = ++nt->nt_scangen;
1948 IEEE80211_NODE_LOCK(nt);
1949 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
1950 if (ni->ni_scangen == gen) /* previously handled */
1952 ni->ni_scangen = gen;
1954 * Ignore entries for which have yet to receive an
1955 * authentication frame. These are transient and
1956 * will be reclaimed when the last reference to them
1957 * goes away (when frame xmits complete).
1961 * Only process stations when in RUN state. This
1962 * insures, for example, that we don't timeout an
1963 * inactive station during CAC. Note that CSA state
1964 * is actually handled in ieee80211_node_timeout as
1965 * it applies to more than timeout processing.
1967 if (vap->iv_state != IEEE80211_S_RUN)
1969 /* XXX can vap be NULL? */
1970 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
1971 vap->iv_opmode == IEEE80211_M_STA) &&
1972 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
1975 * Free fragment if not needed anymore
1976 * (last fragment older than 1s).
1977 * XXX doesn't belong here, move to node_age
1979 if (ni->ni_rxfrag[0] != NULL &&
1980 ticks > ni->ni_rxfragstamp + hz) {
1981 m_freem(ni->ni_rxfrag[0]);
1982 ni->ni_rxfrag[0] = NULL;
1984 if (ni->ni_inact > 0) {
1986 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1987 "%s: inact %u inact_reload %u nrates %u",
1988 __func__, ni->ni_inact, ni->ni_inact_reload,
1989 ni->ni_rates.rs_nrates);
1992 * Special case ourself; we may be idle for extended periods
1993 * of time and regardless reclaiming our state is wrong.
1994 * XXX run ic_node_age
1996 if (ni == vap->iv_bss)
1998 if (ni->ni_associd != 0 ||
1999 (vap->iv_opmode == IEEE80211_M_IBSS ||
2000 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2002 * Age/drain resources held by the station.
2004 ic->ic_node_age(ni);
2006 * Probe the station before time it out. We
2007 * send a null data frame which may not be
2008 * universally supported by drivers (need it
2009 * for ps-poll support so it should be...).
2011 * XXX don't probe the station unless we've
2012 * received a frame from them (and have
2013 * some idea of the rates they are capable
2014 * of); this will get fixed more properly
2015 * soon with better handling of the rate set.
2017 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2018 (0 < ni->ni_inact &&
2019 ni->ni_inact <= vap->iv_inact_probe) &&
2020 ni->ni_rates.rs_nrates != 0) {
2022 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2024 "probe station due to inactivity");
2026 * Grab a reference before unlocking the table
2027 * so the node cannot be reclaimed before we
2028 * send the frame. ieee80211_send_nulldata
2029 * understands we've done this and reclaims the
2030 * ref for us as needed.
2032 ieee80211_ref_node(ni);
2033 IEEE80211_NODE_UNLOCK(nt);
2034 ieee80211_send_nulldata(ni);
2039 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2040 ni->ni_inact <= 0) {
2042 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2043 "station timed out due to inactivity "
2044 "(refcnt %u)", ieee80211_node_refcnt(ni));
2046 * Send a deauthenticate frame and drop the station.
2047 * This is somewhat complicated due to reference counts
2048 * and locking. At this point a station will typically
2049 * have a reference count of 1. ieee80211_node_leave
2050 * will do a "free" of the node which will drop the
2051 * reference count. But in the meantime a reference
2052 * wil be held by the deauth frame. The actual reclaim
2053 * of the node will happen either after the tx is
2054 * completed or by ieee80211_node_leave.
2056 * Separately we must drop the node lock before sending
2057 * in case the driver takes a lock, as this can result
2058 * in a LOR between the node lock and the driver lock.
2060 ieee80211_ref_node(ni);
2061 IEEE80211_NODE_UNLOCK(nt);
2062 if (ni->ni_associd != 0) {
2063 IEEE80211_SEND_MGMT(ni,
2064 IEEE80211_FC0_SUBTYPE_DEAUTH,
2065 IEEE80211_REASON_AUTH_EXPIRE);
2067 ieee80211_node_leave(ni);
2068 ieee80211_free_node(ni);
2069 vap->iv_stats.is_node_timeout++;
2073 IEEE80211_NODE_UNLOCK(nt);
2075 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2079 * Aggressively reclaim resources. This should be used
2080 * only in a critical situation to reclaim mbuf resources.
2083 ieee80211_drain(struct ieee80211com *ic)
2085 struct ieee80211_node_table *nt = &ic->ic_sta;
2086 struct ieee80211vap *vap;
2087 struct ieee80211_node *ni;
2089 IEEE80211_NODE_LOCK(nt);
2090 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2092 * Ignore entries for which have yet to receive an
2093 * authentication frame. These are transient and
2094 * will be reclaimed when the last reference to them
2095 * goes away (when frame xmits complete).
2099 * Only process stations when in RUN state. This
2100 * insures, for example, that we don't timeout an
2101 * inactive station during CAC. Note that CSA state
2102 * is actually handled in ieee80211_node_timeout as
2103 * it applies to more than timeout processing.
2105 if (vap->iv_state != IEEE80211_S_RUN)
2107 /* XXX can vap be NULL? */
2108 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2109 vap->iv_opmode == IEEE80211_M_STA) &&
2110 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2114 * XXX doesn't belong here, move to node_drain
2116 if (ni->ni_rxfrag[0] != NULL) {
2117 m_freem(ni->ni_rxfrag[0]);
2118 ni->ni_rxfrag[0] = NULL;
2121 * Drain resources held by the station.
2123 ic->ic_node_drain(ni);
2125 IEEE80211_NODE_UNLOCK(nt);
2129 * Per-ieee80211com inactivity timer callback.
2132 ieee80211_node_timeout(void *arg)
2134 struct ieee80211com *ic = arg;
2137 * Defer timeout processing if a channel switch is pending.
2138 * We typically need to be mute so not doing things that
2139 * might generate frames is good to handle in one place.
2140 * Supressing the station timeout processing may extend the
2141 * lifetime of inactive stations (by not decrementing their
2142 * idle counters) but this should be ok unless the CSA is
2143 * active for an unusually long time.
2145 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2146 ieee80211_scan_timeout(ic);
2147 ieee80211_timeout_stations(ic);
2148 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2151 ieee80211_erp_timeout(ic);
2152 ieee80211_ht_timeout(ic);
2153 IEEE80211_UNLOCK(ic);
2155 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2156 ieee80211_node_timeout, ic);
2160 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2161 ieee80211_iter_func *f, void *arg)
2163 struct ieee80211_node *ni;
2166 IEEE80211_NODE_ITERATE_LOCK(nt);
2167 gen = ++nt->nt_scangen;
2169 IEEE80211_NODE_LOCK(nt);
2170 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2171 if (ni->ni_scangen != gen) {
2172 ni->ni_scangen = gen;
2173 (void) ieee80211_ref_node(ni);
2174 IEEE80211_NODE_UNLOCK(nt);
2176 ieee80211_free_node(ni);
2180 IEEE80211_NODE_UNLOCK(nt);
2182 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2186 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2188 printf("0x%p: mac %s refcnt %d\n", ni,
2189 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2190 printf("\tscangen %u authmode %u flags 0x%x\n",
2191 ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
2192 printf("\tassocid 0x%x txpower %u vlan %u\n",
2193 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2194 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2195 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2196 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2197 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2198 ni->ni_rxfragstamp);
2199 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2200 node_getrssi(ni), ni->ni_noise,
2201 ni->ni_intval, ni->ni_capinfo);
2202 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2203 ether_sprintf(ni->ni_bssid),
2204 ni->ni_esslen, ni->ni_essid,
2205 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2206 printf("\tinact %u inact_reload %u txrate %u\n",
2207 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2208 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2209 ni->ni_htcap, ni->ni_htparam,
2210 ni->ni_htctlchan, ni->ni_ht2ndchan);
2211 printf("\thtopmode %x htstbc %x chw %u\n",
2212 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2216 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2218 ieee80211_iterate_nodes(nt,
2219 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2223 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2225 struct ieee80211vap *vap;
2227 IEEE80211_LOCK_ASSERT(ic);
2229 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2230 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2231 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2235 ieee80211_notify_erp(struct ieee80211com *ic)
2238 ieee80211_notify_erp_locked(ic);
2239 IEEE80211_UNLOCK(ic);
2243 * Handle a station joining an 11g network.
2246 ieee80211_node_join_11g(struct ieee80211_node *ni)
2248 struct ieee80211com *ic = ni->ni_ic;
2250 IEEE80211_LOCK_ASSERT(ic);
2253 * Station isn't capable of short slot time. Bump
2254 * the count of long slot time stations and disable
2255 * use of short slot time. Note that the actual switch
2256 * over to long slot time use may not occur until the
2257 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2259 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2260 ic->ic_longslotsta++;
2261 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2262 "station needs long slot time, count %d",
2263 ic->ic_longslotsta);
2264 /* XXX vap's w/ conflicting needs won't work */
2265 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2267 * Don't force slot time when switched to turbo
2268 * mode as non-ERP stations won't be present; this
2269 * need only be done when on the normal G channel.
2271 ieee80211_set_shortslottime(ic, 0);
2275 * If the new station is not an ERP station
2276 * then bump the counter and enable protection
2279 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2281 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2282 "station is !ERP, %d non-ERP stations associated",
2285 * If station does not support short preamble
2286 * then we must enable use of Barker preamble.
2288 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2289 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2290 "%s", "station needs long preamble");
2291 ic->ic_flags |= IEEE80211_F_USEBARKER;
2292 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2295 * If protection is configured and this is the first
2296 * indication we should use protection, enable it.
2298 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2299 ic->ic_nonerpsta == 1 &&
2300 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2301 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2302 "%s: enable use of protection\n", __func__);
2303 ic->ic_flags |= IEEE80211_F_USEPROT;
2304 ieee80211_notify_erp_locked(ic);
2307 ni->ni_flags |= IEEE80211_NODE_ERP;
2311 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2313 struct ieee80211com *ic = ni->ni_ic;
2314 struct ieee80211vap *vap = ni->ni_vap;
2317 if (ni->ni_associd == 0) {
2320 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2322 * It would be good to search the bitmap
2323 * more efficiently, but this will do for now.
2325 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2326 if (!IEEE80211_AID_ISSET(vap, aid))
2329 if (aid >= vap->iv_max_aid) {
2330 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2331 ieee80211_node_leave(ni);
2334 ni->ni_associd = aid | 0xc000;
2335 ni->ni_jointime = time_uptime;
2337 IEEE80211_AID_SET(vap, ni->ni_associd);
2338 vap->iv_sta_assoc++;
2341 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2342 ieee80211_ht_node_join(ni);
2343 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2344 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2345 ieee80211_node_join_11g(ni);
2346 IEEE80211_UNLOCK(ic);
2352 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2353 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2354 IEEE80211_NODE_AID(ni),
2355 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2356 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2357 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2358 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2359 ni->ni_flags & IEEE80211_NODE_HT ?
2360 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2361 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2362 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2363 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2364 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2365 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2366 ", fast-frames" : "",
2367 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2371 ieee80211_node_setuptxparms(ni);
2372 ieee80211_ratectl_node_init(ni);
2373 /* give driver a chance to setup state like ni_txrate */
2374 if (ic->ic_newassoc != NULL)
2375 ic->ic_newassoc(ni, newassoc);
2376 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2377 /* tell the authenticator about new station */
2378 if (vap->iv_auth->ia_node_join != NULL)
2379 vap->iv_auth->ia_node_join(ni);
2380 ieee80211_notify_node_join(ni,
2381 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2385 disable_protection(struct ieee80211com *ic)
2387 KASSERT(ic->ic_nonerpsta == 0 &&
2388 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2389 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2392 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2393 /* XXX verify mode? */
2394 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2395 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2396 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2398 ieee80211_notify_erp_locked(ic);
2402 * Handle a station leaving an 11g network.
2405 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2407 struct ieee80211com *ic = ni->ni_ic;
2409 IEEE80211_LOCK_ASSERT(ic);
2411 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2412 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2413 ic->ic_bsschan->ic_flags));
2416 * If a long slot station do the slot time bookkeeping.
2418 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2419 KASSERT(ic->ic_longslotsta > 0,
2420 ("bogus long slot station count %d", ic->ic_longslotsta));
2421 ic->ic_longslotsta--;
2422 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2423 "long slot time station leaves, count now %d",
2424 ic->ic_longslotsta);
2425 if (ic->ic_longslotsta == 0) {
2427 * Re-enable use of short slot time if supported
2428 * and not operating in IBSS mode (per spec).
2430 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2431 ic->ic_opmode != IEEE80211_M_IBSS) {
2432 IEEE80211_DPRINTF(ni->ni_vap,
2433 IEEE80211_MSG_ASSOC,
2434 "%s: re-enable use of short slot time\n",
2436 ieee80211_set_shortslottime(ic, 1);
2441 * If a non-ERP station do the protection-related bookkeeping.
2443 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2444 KASSERT(ic->ic_nonerpsta > 0,
2445 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2447 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2448 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2449 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2450 " (non-ERP sta present)" : "");
2451 if (ic->ic_nonerpsta == 0 &&
2452 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2453 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2454 "%s: disable use of protection\n", __func__);
2455 disable_protection(ic);
2461 * Time out presence of an overlapping bss with non-ERP
2462 * stations. When operating in hostap mode we listen for
2463 * beacons from other stations and if we identify a non-ERP
2464 * station is present we enable protection. To identify
2465 * when all non-ERP stations are gone we time out this
2469 ieee80211_erp_timeout(struct ieee80211com *ic)
2472 IEEE80211_LOCK_ASSERT(ic);
2474 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2475 time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2477 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2478 "%s", "age out non-ERP sta present on channel");
2480 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2481 if (ic->ic_nonerpsta == 0)
2482 disable_protection(ic);
2487 * Handle bookkeeping for station deauthentication/disassociation
2488 * when operating as an ap.
2491 ieee80211_node_leave(struct ieee80211_node *ni)
2493 struct ieee80211com *ic = ni->ni_ic;
2494 struct ieee80211vap *vap = ni->ni_vap;
2495 struct ieee80211_node_table *nt = ni->ni_table;
2497 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2498 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2500 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2501 ("unexpected operating mode %u", vap->iv_opmode));
2503 * If node wasn't previously associated all
2504 * we need to do is reclaim the reference.
2506 /* XXX ibss mode bypasses 11g and notification */
2507 if (ni->ni_associd == 0)
2510 * Tell the authenticator the station is leaving.
2511 * Note that we must do this before yanking the
2512 * association id as the authenticator uses the
2513 * associd to locate it's state block.
2515 if (vap->iv_auth->ia_node_leave != NULL)
2516 vap->iv_auth->ia_node_leave(ni);
2519 IEEE80211_AID_CLR(vap, ni->ni_associd);
2521 vap->iv_sta_assoc--;
2524 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2525 ieee80211_ht_node_leave(ni);
2526 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2527 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2528 ieee80211_node_leave_11g(ni);
2529 IEEE80211_UNLOCK(ic);
2531 * Cleanup station state. In particular clear various
2532 * state that might otherwise be reused if the node
2533 * is reused before the reference count goes to zero
2534 * (and memory is reclaimed).
2536 ieee80211_sta_leave(ni);
2539 * Remove the node from any table it's recorded in and
2540 * drop the caller's reference. Removal from the table
2541 * is important to insure the node is not reprocessed
2545 IEEE80211_NODE_LOCK(nt);
2546 node_reclaim(nt, ni);
2547 IEEE80211_NODE_UNLOCK(nt);
2549 ieee80211_free_node(ni);
2553 struct ieee80211vap *vap;
2555 uint32_t rssi_total;
2559 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2561 struct rssiinfo *info = arg;
2562 struct ieee80211vap *vap = ni->ni_vap;
2565 if (info->vap != vap)
2567 /* only associated stations */
2568 if (ni->ni_associd == 0)
2570 rssi = vap->iv_ic->ic_node_getrssi(ni);
2572 info->rssi_samples++;
2573 info->rssi_total += rssi;
2578 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2580 struct rssiinfo *info = arg;
2581 struct ieee80211vap *vap = ni->ni_vap;
2584 if (info->vap != vap)
2586 /* only neighbors */
2587 /* XXX check bssid */
2588 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2590 rssi = vap->iv_ic->ic_node_getrssi(ni);
2592 info->rssi_samples++;
2593 info->rssi_total += rssi;
2597 #ifdef IEEE80211_SUPPORT_MESH
2599 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
2601 struct rssiinfo *info = arg;
2602 struct ieee80211vap *vap = ni->ni_vap;
2605 if (info->vap != vap)
2607 /* only neighbors that peered successfully */
2608 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
2610 rssi = vap->iv_ic->ic_node_getrssi(ni);
2612 info->rssi_samples++;
2613 info->rssi_total += rssi;
2616 #endif /* IEEE80211_SUPPORT_MESH */
2619 ieee80211_getrssi(struct ieee80211vap *vap)
2621 #define NZ(x) ((x) == 0 ? 1 : (x))
2622 struct ieee80211com *ic = vap->iv_ic;
2623 struct rssiinfo info;
2625 info.rssi_total = 0;
2626 info.rssi_samples = 0;
2628 switch (vap->iv_opmode) {
2629 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
2630 case IEEE80211_M_AHDEMO: /* average of all neighbors */
2631 ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info);
2633 case IEEE80211_M_HOSTAP: /* average of all associated stations */
2634 ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info);
2636 #ifdef IEEE80211_SUPPORT_MESH
2637 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
2638 ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info);
2641 case IEEE80211_M_MONITOR: /* XXX */
2642 case IEEE80211_M_STA: /* use stats from associated ap */
2644 if (vap->iv_bss != NULL)
2645 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
2646 info.rssi_samples = 1;
2649 return info.rssi_total / NZ(info.rssi_samples);
2654 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
2657 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
2659 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
2660 /* for non-station mode return avg'd rssi accounting */
2661 if (vap->iv_opmode != IEEE80211_M_STA)
2662 *rssi = ieee80211_getrssi(vap);