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 * Join the specified IBSS/BSS network. The node is assumed to
690 * be passed in with a held reference.
693 ieee80211_sta_join1(struct ieee80211_node *selbs)
695 struct ieee80211vap *vap = selbs->ni_vap;
696 struct ieee80211com *ic = selbs->ni_ic;
697 struct ieee80211_node *obss;
701 * Committed to selbs, setup state.
705 * Check if old+new node have the same address in which
706 * case we can reassociate when operating in sta mode.
708 canreassoc = (obss != NULL &&
709 vap->iv_state == IEEE80211_S_RUN &&
710 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
711 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
713 copy_bss(selbs, obss);
714 ieee80211_node_decref(obss); /* iv_bss reference */
715 ieee80211_free_node(obss); /* station table reference */
716 obss = NULL; /* NB: guard against later use */
720 * Delete unusable rates; we've already checked
721 * that the negotiated rate set is acceptable.
723 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
724 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
726 ieee80211_setcurchan(ic, selbs->ni_chan);
728 * Set the erp state (mostly the slot time) to deal with
729 * the auto-select case; this should be redundant if the
732 ieee80211_reset_erp(ic);
733 ieee80211_wme_initparams(vap);
735 if (vap->iv_opmode == IEEE80211_M_STA) {
738 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
741 * Act as if we received a DEAUTH frame in case we
742 * are invoked from the RUN state. This will cause
743 * us to try to re-authenticate if we are operating
746 ieee80211_new_state(vap, IEEE80211_S_AUTH,
747 IEEE80211_FC0_SUBTYPE_DEAUTH);
750 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
755 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
756 const struct ieee80211_scan_entry *se)
758 struct ieee80211com *ic = vap->iv_ic;
759 struct ieee80211_node *ni;
761 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
767 * Expand scan state into node's format.
768 * XXX may not need all this stuff
770 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
771 ni->ni_esslen = se->se_ssid[1];
772 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
773 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
774 ni->ni_intval = se->se_intval;
775 ni->ni_capinfo = se->se_capinfo;
777 ni->ni_timoff = se->se_timoff;
778 ni->ni_fhdwell = se->se_fhdwell;
779 ni->ni_fhindex = se->se_fhindex;
780 ni->ni_erp = se->se_erp;
781 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
782 ni->ni_noise = se->se_noise;
783 if (vap->iv_opmode == IEEE80211_M_STA) {
784 /* NB: only infrastructure mode requires an associd */
785 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
788 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
789 ieee80211_ies_expand(&ni->ni_ies);
790 #ifdef IEEE80211_SUPPORT_SUPERG
791 if (ni->ni_ies.ath_ie != NULL)
792 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
794 if (ni->ni_ies.htcap_ie != NULL)
795 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
796 if (ni->ni_ies.htinfo_ie != NULL)
797 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
798 #ifdef IEEE80211_SUPPORT_MESH
799 if (ni->ni_ies.meshid_ie != NULL)
800 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
802 #ifdef IEEE80211_SUPPORT_TDMA
803 if (ni->ni_ies.tdma_ie != NULL)
804 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
808 vap->iv_dtim_period = se->se_dtimperiod;
809 vap->iv_dtim_count = 0;
811 /* NB: must be after ni_chan is setup */
812 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
814 if (ieee80211_iserp_rateset(&ni->ni_rates))
815 ni->ni_flags |= IEEE80211_NODE_ERP;
816 ieee80211_node_setuptxparms(ni);
817 ieee80211_ratectl_node_init(ni);
819 return ieee80211_sta_join1(ieee80211_ref_node(ni));
823 * Leave the specified IBSS/BSS network. The node is assumed to
824 * be passed in with a held reference.
827 ieee80211_sta_leave(struct ieee80211_node *ni)
829 struct ieee80211com *ic = ni->ni_ic;
831 ic->ic_node_cleanup(ni);
832 ieee80211_notify_node_leave(ni);
836 * Send a deauthenticate frame and drop the station.
839 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
841 /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */
842 ieee80211_ref_node(ni);
843 if (ni->ni_associd != 0)
844 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
845 ieee80211_node_leave(ni);
846 ieee80211_free_node(ni);
849 static struct ieee80211_node *
850 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
852 struct ieee80211_node *ni;
854 ni = (struct ieee80211_node *) malloc(sizeof(struct ieee80211_node),
855 M_80211_NODE, M_NOWAIT | M_ZERO);
860 * Initialize an ie blob with the specified data. If previous
861 * data exists re-use the data block. As a side effect we clear
862 * all references to specific ie's; the caller is required to
866 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
868 /* NB: assumes data+len are the last fields */
869 memset(ies, 0, offsetof(struct ieee80211_ies, data));
870 if (ies->data != NULL && ies->len != len) {
871 /* data size changed */
872 free(ies->data, M_80211_NODE_IE);
875 if (ies->data == NULL) {
876 ies->data = (uint8_t *) malloc(len, M_80211_NODE_IE, M_NOWAIT);
877 if (ies->data == NULL) {
879 /* NB: pointers have already been zero'd above */
883 memcpy(ies->data, data, len);
889 * Reclaim storage for an ie blob.
892 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
894 if (ies->data != NULL)
895 free(ies->data, M_80211_NODE_IE);
899 * Expand an ie blob data contents and to fillin individual
900 * ie pointers. The data blob is assumed to be well-formed;
901 * we don't do any validity checking of ie lengths.
904 ieee80211_ies_expand(struct ieee80211_ies *ies)
913 case IEEE80211_ELEMID_VENDOR:
916 else if (iswmeoui(ie))
918 #ifdef IEEE80211_SUPPORT_SUPERG
919 else if (isatherosoui(ie))
922 #ifdef IEEE80211_SUPPORT_TDMA
923 else if (istdmaoui(ie))
927 case IEEE80211_ELEMID_RSN:
930 case IEEE80211_ELEMID_HTCAP:
933 #ifdef IEEE80211_SUPPORT_MESH
934 case IEEE80211_ELEMID_MESHID:
945 * Reclaim any resources in a node and reset any critical
946 * state. Typically nodes are free'd immediately after,
947 * but in some cases the storage may be reused so we need
948 * to insure consistent state (should probably fix that).
951 node_cleanup(struct ieee80211_node *ni)
953 #define N(a) (sizeof(a)/sizeof(a[0]))
954 struct ieee80211vap *vap = ni->ni_vap;
955 struct ieee80211com *ic = ni->ni_ic;
958 /* NB: preserve ni_table */
959 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
960 if (vap->iv_opmode != IEEE80211_M_STA)
962 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
963 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
964 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
967 * Cleanup any HT-related state.
969 if (ni->ni_flags & IEEE80211_NODE_HT)
970 ieee80211_ht_node_cleanup(ni);
971 #ifdef IEEE80211_SUPPORT_SUPERG
972 else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
973 ieee80211_ff_node_cleanup(ni);
975 #ifdef IEEE80211_SUPPORT_MESH
977 * Cleanup any mesh-related state.
979 if (vap->iv_opmode == IEEE80211_M_MBSS)
980 ieee80211_mesh_node_cleanup(ni);
983 * Clear any staging queue entries.
985 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
988 * Clear AREF flag that marks the authorization refcnt bump
989 * has happened. This is probably not needed as the node
990 * should always be removed from the table so not found but
991 * do it just in case.
992 * Likewise clear the ASSOCID flag as these flags are intended
993 * to be managed in tandem.
995 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
998 * Drain power save queue and, if needed, clear TIM.
1000 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1001 vap->iv_set_tim(ni, 0);
1004 if (ni->ni_challenge != NULL) {
1005 free(ni->ni_challenge, M_80211_NODE);
1006 ni->ni_challenge = NULL;
1009 * Preserve SSID, WPA, and WME ie's so the bss node is
1010 * reusable during a re-auth/re-assoc state transition.
1011 * If we remove these data they will not be recreated
1012 * because they come from a probe-response or beacon frame
1013 * which cannot be expected prior to the association-response.
1014 * This should not be an issue when operating in other modes
1015 * as stations leaving always go through a full state transition
1016 * which will rebuild this state.
1018 * XXX does this leave us open to inheriting old state?
1020 for (i = 0; i < N(ni->ni_rxfrag); i++)
1021 if (ni->ni_rxfrag[i] != NULL) {
1022 m_freem(ni->ni_rxfrag[i]);
1023 ni->ni_rxfrag[i] = NULL;
1026 * Must be careful here to remove any key map entry w/o a LOR.
1028 ieee80211_node_delucastkey(ni);
1033 node_free(struct ieee80211_node *ni)
1035 struct ieee80211com *ic = ni->ni_ic;
1037 ieee80211_ratectl_node_deinit(ni);
1038 ic->ic_node_cleanup(ni);
1039 ieee80211_ies_cleanup(&ni->ni_ies);
1040 ieee80211_psq_cleanup(&ni->ni_psq);
1041 free(ni, M_80211_NODE);
1045 node_age(struct ieee80211_node *ni)
1047 struct ieee80211vap *vap = ni->ni_vap;
1049 IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta);
1052 * Age frames on the power save queue.
1054 if (ieee80211_node_psq_age(ni) != 0 &&
1055 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1056 vap->iv_set_tim(ni, 0);
1058 * Age out HT resources (e.g. frames on the
1059 * A-MPDU reorder queues).
1061 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1062 ieee80211_ht_node_age(ni);
1066 node_getrssi(const struct ieee80211_node *ni)
1068 uint32_t avgrssi = ni->ni_avgrssi;
1071 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1073 rssi = IEEE80211_RSSI_GET(avgrssi);
1074 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1078 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1080 *rssi = node_getrssi(ni);
1081 *noise = ni->ni_noise;
1085 node_getmimoinfo(const struct ieee80211_node *ni,
1086 struct ieee80211_mimo_info *info)
1092 bzero(info, sizeof(*info));
1094 for (i = 0; i < ni->ni_mimo_chains; i++) {
1095 avgrssi = ni->ni_mimo_rssi_ctl[i];
1096 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1099 rssi = IEEE80211_RSSI_GET(avgrssi);
1100 info->rssi[i] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1102 info->noise[i] = ni->ni_mimo_noise_ctl[i];
1105 /* XXX ext radios? */
1110 struct ieee80211_node *
1111 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1112 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1114 struct ieee80211com *ic = nt->nt_ic;
1115 struct ieee80211_node *ni;
1118 ni = ic->ic_node_alloc(vap, macaddr);
1120 vap->iv_stats.is_rx_nodealloc++;
1124 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1125 "%s %p<%s> in %s table\n", __func__, ni,
1126 ether_sprintf(macaddr), nt->nt_name);
1128 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1129 hash = IEEE80211_NODE_HASH(ic, macaddr);
1130 ieee80211_node_initref(ni); /* mark referenced */
1131 ni->ni_chan = IEEE80211_CHAN_ANYC;
1132 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1133 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1134 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1135 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1136 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1137 ni->ni_inact_reload = nt->nt_inact_init;
1138 ni->ni_inact = ni->ni_inact_reload;
1139 ni->ni_ath_defkeyix = 0x7fff;
1140 ieee80211_psq_init(&ni->ni_psq, "unknown");
1141 #ifdef IEEE80211_SUPPORT_MESH
1142 if (vap->iv_opmode == IEEE80211_M_MBSS)
1143 ieee80211_mesh_node_init(vap, ni);
1145 IEEE80211_NODE_LOCK(nt);
1146 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1147 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1151 IEEE80211_NODE_UNLOCK(nt);
1153 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1154 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1156 ieee80211_ratectl_node_init(ni);
1162 * Craft a temporary node suitable for sending a management frame
1163 * to the specified station. We craft only as much state as we
1164 * need to do the work since the node will be immediately reclaimed
1165 * once the send completes.
1167 struct ieee80211_node *
1168 ieee80211_tmp_node(struct ieee80211vap *vap,
1169 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1171 struct ieee80211com *ic = vap->iv_ic;
1172 struct ieee80211_node *ni;
1174 ni = ic->ic_node_alloc(vap, macaddr);
1176 struct ieee80211_node *bss = vap->iv_bss;
1178 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1179 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1181 ni->ni_table = NULL; /* NB: pedantic */
1182 ni->ni_ic = ic; /* NB: needed to set channel */
1185 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1186 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1187 ieee80211_node_initref(ni); /* mark referenced */
1188 /* NB: required by ieee80211_fix_rate */
1189 ieee80211_node_set_chan(ni, bss->ni_chan);
1190 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1191 IEEE80211_KEYIX_NONE);
1192 ni->ni_txpower = bss->ni_txpower;
1193 /* XXX optimize away */
1194 ieee80211_psq_init(&ni->ni_psq, "unknown");
1196 ieee80211_ratectl_node_init(ni);
1199 vap->iv_stats.is_rx_nodealloc++;
1204 struct ieee80211_node *
1205 ieee80211_dup_bss(struct ieee80211vap *vap,
1206 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1208 struct ieee80211com *ic = vap->iv_ic;
1209 struct ieee80211_node *ni;
1211 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1213 struct ieee80211_node *bss = vap->iv_bss;
1215 * Inherit from iv_bss.
1218 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1219 ieee80211_node_set_chan(ni, bss->ni_chan);
1225 * Create a bss node for a legacy WDS vap. The far end does
1226 * not associate so we just create create a new node and
1227 * simulate an association. The caller is responsible for
1228 * installing the node as the bss node and handling any further
1229 * setup work like authorizing the port.
1231 struct ieee80211_node *
1232 ieee80211_node_create_wds(struct ieee80211vap *vap,
1233 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1235 struct ieee80211com *ic = vap->iv_ic;
1236 struct ieee80211_node *ni;
1238 /* XXX check if node already in sta table? */
1239 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1241 ni->ni_wdsvap = vap;
1242 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1244 * Inherit any manually configured settings.
1246 copy_bss(ni, vap->iv_bss);
1247 ieee80211_node_set_chan(ni, chan);
1248 /* NB: propagate ssid so available to WPA supplicant */
1249 ni->ni_esslen = vap->iv_des_ssid[0].len;
1250 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1251 /* NB: no associd for peer */
1253 * There are no management frames to use to
1254 * discover neighbor capabilities, so blindly
1255 * propagate the local configuration.
1257 if (vap->iv_flags & IEEE80211_F_WME)
1258 ni->ni_flags |= IEEE80211_NODE_QOS;
1259 #ifdef IEEE80211_SUPPORT_SUPERG
1260 if (vap->iv_flags & IEEE80211_F_FF)
1261 ni->ni_flags |= IEEE80211_NODE_FF;
1263 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1264 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1266 * Device is HT-capable and HT is enabled for
1267 * the vap; setup HT operation. On return
1268 * ni_chan will be adjusted to an HT channel.
1270 ieee80211_ht_wds_init(ni);
1272 struct ieee80211_channel *c = ni->ni_chan;
1274 * Force a legacy channel to be used.
1276 c = ieee80211_find_channel(ic,
1277 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1278 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1279 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1286 struct ieee80211_node *
1287 #ifdef IEEE80211_DEBUG_REFCNT
1288 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1289 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1291 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1292 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1295 struct ieee80211_node *ni;
1298 IEEE80211_NODE_LOCK_ASSERT(nt);
1300 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1301 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1302 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1303 ieee80211_ref_node(ni); /* mark referenced */
1304 #ifdef IEEE80211_DEBUG_REFCNT
1305 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1306 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1308 ni, ether_sprintf(ni->ni_macaddr),
1309 ieee80211_node_refcnt(ni));
1317 struct ieee80211_node *
1318 #ifdef IEEE80211_DEBUG_REFCNT
1319 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1320 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1322 ieee80211_find_node(struct ieee80211_node_table *nt,
1323 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1326 struct ieee80211_node *ni;
1328 IEEE80211_NODE_LOCK(nt);
1329 ni = ieee80211_find_node_locked(nt, macaddr);
1330 IEEE80211_NODE_UNLOCK(nt);
1334 struct ieee80211_node *
1335 #ifdef IEEE80211_DEBUG_REFCNT
1336 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1337 const struct ieee80211vap *vap,
1338 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1340 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1341 const struct ieee80211vap *vap,
1342 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1345 struct ieee80211_node *ni;
1348 IEEE80211_NODE_LOCK_ASSERT(nt);
1350 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1351 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1352 if (ni->ni_vap == vap &&
1353 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1354 ieee80211_ref_node(ni); /* mark referenced */
1355 #ifdef IEEE80211_DEBUG_REFCNT
1356 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1357 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1359 ni, ether_sprintf(ni->ni_macaddr),
1360 ieee80211_node_refcnt(ni));
1368 struct ieee80211_node *
1369 #ifdef IEEE80211_DEBUG_REFCNT
1370 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1371 const struct ieee80211vap *vap,
1372 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1374 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1375 const struct ieee80211vap *vap,
1376 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1379 struct ieee80211_node *ni;
1381 IEEE80211_NODE_LOCK(nt);
1382 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1383 IEEE80211_NODE_UNLOCK(nt);
1388 * Fake up a node; this handles node discovery in adhoc mode.
1389 * Note that for the driver's benefit we we treat this like
1390 * an association so the driver has an opportunity to setup
1391 * it's private state.
1393 struct ieee80211_node *
1394 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1395 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1397 struct ieee80211_node *ni;
1399 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1400 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1401 ni = ieee80211_dup_bss(vap, macaddr);
1403 struct ieee80211com *ic = vap->iv_ic;
1405 /* XXX no rate negotiation; just dup */
1406 ni->ni_rates = vap->iv_bss->ni_rates;
1407 if (ieee80211_iserp_rateset(&ni->ni_rates))
1408 ni->ni_flags |= IEEE80211_NODE_ERP;
1409 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1411 * In adhoc demo mode there are no management
1412 * frames to use to discover neighbor capabilities,
1413 * so blindly propagate the local configuration
1414 * so we can do interesting things (e.g. use
1415 * WME to disable ACK's).
1417 if (vap->iv_flags & IEEE80211_F_WME)
1418 ni->ni_flags |= IEEE80211_NODE_QOS;
1419 #ifdef IEEE80211_SUPPORT_SUPERG
1420 if (vap->iv_flags & IEEE80211_F_FF)
1421 ni->ni_flags |= IEEE80211_NODE_FF;
1424 ieee80211_node_setuptxparms(ni);
1425 ieee80211_ratectl_node_init(ni);
1426 if (ic->ic_newassoc != NULL)
1427 ic->ic_newassoc(ni, 1);
1428 /* XXX not right for 802.1x/WPA */
1429 ieee80211_node_authorize(ni);
1435 ieee80211_init_neighbor(struct ieee80211_node *ni,
1436 const struct ieee80211_frame *wh,
1437 const struct ieee80211_scanparams *sp)
1439 ni->ni_esslen = sp->ssid[1];
1440 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1441 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1442 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1443 ni->ni_intval = sp->bintval;
1444 ni->ni_capinfo = sp->capinfo;
1445 ni->ni_chan = ni->ni_ic->ic_curchan;
1446 ni->ni_fhdwell = sp->fhdwell;
1447 ni->ni_fhindex = sp->fhindex;
1448 ni->ni_erp = sp->erp;
1449 ni->ni_timoff = sp->timoff;
1450 #ifdef IEEE80211_SUPPORT_MESH
1451 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1452 ieee80211_mesh_init_neighbor(ni, wh, sp);
1454 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1455 ieee80211_ies_expand(&ni->ni_ies);
1456 if (ni->ni_ies.wme_ie != NULL)
1457 ni->ni_flags |= IEEE80211_NODE_QOS;
1459 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1460 #ifdef IEEE80211_SUPPORT_SUPERG
1461 if (ni->ni_ies.ath_ie != NULL)
1462 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1466 /* NB: must be after ni_chan is setup */
1467 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1468 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1469 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1473 * Do node discovery in adhoc mode on receipt of a beacon
1474 * or probe response frame. Note that for the driver's
1475 * benefit we we treat this like an association so the
1476 * driver has an opportunity to setup it's private state.
1478 struct ieee80211_node *
1479 ieee80211_add_neighbor(struct ieee80211vap *vap,
1480 const struct ieee80211_frame *wh,
1481 const struct ieee80211_scanparams *sp)
1483 struct ieee80211_node *ni;
1485 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1486 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1487 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1489 struct ieee80211com *ic = vap->iv_ic;
1491 ieee80211_init_neighbor(ni, wh, sp);
1492 if (ieee80211_iserp_rateset(&ni->ni_rates))
1493 ni->ni_flags |= IEEE80211_NODE_ERP;
1494 ieee80211_node_setuptxparms(ni);
1495 ieee80211_ratectl_node_init(ni);
1496 if (ic->ic_newassoc != NULL)
1497 ic->ic_newassoc(ni, 1);
1498 /* XXX not right for 802.1x/WPA */
1499 ieee80211_node_authorize(ni);
1504 #define IS_PROBEREQ(wh) \
1505 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1506 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1507 #define IS_BCAST_PROBEREQ(wh) \
1508 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1509 ((const struct ieee80211_frame *)(wh))->i_addr3))
1511 static __inline struct ieee80211_node *
1512 _find_rxnode(struct ieee80211_node_table *nt,
1513 const struct ieee80211_frame_min *wh)
1515 if (IS_BCAST_PROBEREQ(wh))
1516 return NULL; /* spam bcast probe req to all vap's */
1517 return ieee80211_find_node_locked(nt, wh->i_addr2);
1521 * Locate the node for sender, track state, and then pass the
1522 * (referenced) node up to the 802.11 layer for its use. Note
1523 * we can return NULL if the sender is not in the table.
1525 struct ieee80211_node *
1526 #ifdef IEEE80211_DEBUG_REFCNT
1527 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1528 const struct ieee80211_frame_min *wh, const char *func, int line)
1530 ieee80211_find_rxnode(struct ieee80211com *ic,
1531 const struct ieee80211_frame_min *wh)
1534 struct ieee80211_node_table *nt;
1535 struct ieee80211_node *ni;
1538 IEEE80211_NODE_LOCK(nt);
1539 ni = _find_rxnode(nt, wh);
1540 IEEE80211_NODE_UNLOCK(nt);
1546 * Like ieee80211_find_rxnode but use the supplied h/w
1547 * key index as a hint to locate the node in the key
1548 * mapping table. If an entry is present at the key
1549 * index we return it; otherwise do a normal lookup and
1550 * update the mapping table if the station has a unicast
1551 * key assigned to it.
1553 struct ieee80211_node *
1554 #ifdef IEEE80211_DEBUG_REFCNT
1555 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1556 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1557 const char *func, int line)
1559 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1560 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1563 struct ieee80211_node_table *nt;
1564 struct ieee80211_node *ni;
1567 IEEE80211_NODE_LOCK(nt);
1568 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1569 ni = nt->nt_keyixmap[keyix];
1573 ni = _find_rxnode(nt, wh);
1574 if (ni != NULL && nt->nt_keyixmap != NULL) {
1576 * If the station has a unicast key cache slot
1577 * assigned update the key->node mapping table.
1579 keyix = ni->ni_ucastkey.wk_rxkeyix;
1580 /* XXX can keyixmap[keyix] != NULL? */
1581 if (keyix < nt->nt_keyixmax &&
1582 nt->nt_keyixmap[keyix] == NULL) {
1583 IEEE80211_DPRINTF(ni->ni_vap,
1585 "%s: add key map entry %p<%s> refcnt %d\n",
1586 __func__, ni, ether_sprintf(ni->ni_macaddr),
1587 ieee80211_node_refcnt(ni)+1);
1588 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1592 if (IS_BCAST_PROBEREQ(wh))
1593 ni = NULL; /* spam bcast probe req to all vap's */
1595 ieee80211_ref_node(ni);
1597 IEEE80211_NODE_UNLOCK(nt);
1601 #undef IS_BCAST_PROBEREQ
1605 * Return a reference to the appropriate node for sending
1606 * a data frame. This handles node discovery in adhoc networks.
1608 struct ieee80211_node *
1609 #ifdef IEEE80211_DEBUG_REFCNT
1610 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1611 const uint8_t macaddr[IEEE80211_ADDR_LEN],
1612 const char *func, int line)
1614 ieee80211_find_txnode(struct ieee80211vap *vap,
1615 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1618 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
1619 struct ieee80211_node *ni;
1622 * The destination address should be in the node table
1623 * unless this is a multicast/broadcast frame. We can
1624 * also optimize station mode operation, all frames go
1627 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
1628 IEEE80211_NODE_LOCK(nt);
1629 if (vap->iv_opmode == IEEE80211_M_STA ||
1630 vap->iv_opmode == IEEE80211_M_WDS ||
1631 IEEE80211_IS_MULTICAST(macaddr))
1632 ni = ieee80211_ref_node(vap->iv_bss);
1634 ni = ieee80211_find_node_locked(nt, macaddr);
1635 IEEE80211_NODE_UNLOCK(nt);
1638 if (vap->iv_opmode == IEEE80211_M_IBSS ||
1639 vap->iv_opmode == IEEE80211_M_AHDEMO) {
1641 * In adhoc mode cons up a node for the destination.
1642 * Note that we need an additional reference for the
1643 * caller to be consistent with
1644 * ieee80211_find_node_locked.
1646 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
1648 (void) ieee80211_ref_node(ni);
1650 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
1651 "no node, discard frame (%s)", __func__);
1652 vap->iv_stats.is_tx_nonode++;
1659 _ieee80211_free_node(struct ieee80211_node *ni)
1661 struct ieee80211_node_table *nt = ni->ni_table;
1664 * NB: careful about referencing the vap as it may be
1665 * gone if the last reference was held by a driver.
1666 * We know the com will always be present so it's safe
1667 * to use ni_ic below to reclaim resources.
1670 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1671 "%s %p<%s> in %s table\n", __func__, ni,
1672 ether_sprintf(ni->ni_macaddr),
1673 nt != NULL ? nt->nt_name : "<gone>");
1675 if (ni->ni_associd != 0) {
1676 struct ieee80211vap *vap = ni->ni_vap;
1677 if (vap->iv_aid_bitmap != NULL)
1678 IEEE80211_AID_CLR(vap, ni->ni_associd);
1681 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1682 LIST_REMOVE(ni, ni_hash);
1684 ni->ni_ic->ic_node_free(ni);
1688 #ifdef IEEE80211_DEBUG_REFCNT
1689 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
1691 ieee80211_free_node(struct ieee80211_node *ni)
1694 struct ieee80211_node_table *nt = ni->ni_table;
1696 #ifdef IEEE80211_DEBUG_REFCNT
1697 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1698 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
1699 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
1702 IEEE80211_NODE_LOCK(nt);
1703 if (ieee80211_node_dectestref(ni)) {
1705 * Last reference, reclaim state.
1707 _ieee80211_free_node(ni);
1708 } else if (ieee80211_node_refcnt(ni) == 1 &&
1709 nt->nt_keyixmap != NULL) {
1710 ieee80211_keyix keyix;
1712 * Check for a last reference in the key mapping table.
1714 keyix = ni->ni_ucastkey.wk_rxkeyix;
1715 if (keyix < nt->nt_keyixmax &&
1716 nt->nt_keyixmap[keyix] == ni) {
1717 IEEE80211_DPRINTF(ni->ni_vap,
1719 "%s: %p<%s> clear key map entry", __func__,
1720 ni, ether_sprintf(ni->ni_macaddr));
1721 nt->nt_keyixmap[keyix] = NULL;
1722 ieee80211_node_decref(ni); /* XXX needed? */
1723 _ieee80211_free_node(ni);
1726 IEEE80211_NODE_UNLOCK(nt);
1728 if (ieee80211_node_dectestref(ni))
1729 _ieee80211_free_node(ni);
1734 * Reclaim a unicast key and clear any key cache state.
1737 ieee80211_node_delucastkey(struct ieee80211_node *ni)
1739 struct ieee80211com *ic = ni->ni_ic;
1740 struct ieee80211_node_table *nt = &ic->ic_sta;
1741 struct ieee80211_node *nikey;
1742 ieee80211_keyix keyix;
1743 int isowned, status;
1746 * NB: We must beware of LOR here; deleting the key
1747 * can cause the crypto layer to block traffic updates
1748 * which can generate a LOR against the node table lock;
1749 * grab it here and stash the key index for our use below.
1751 * Must also beware of recursion on the node table lock.
1752 * When called from node_cleanup we may already have
1753 * the node table lock held. Unfortunately there's no
1754 * way to separate out this path so we must do this
1757 isowned = IEEE80211_NODE_IS_LOCKED(nt);
1759 IEEE80211_NODE_LOCK(nt);
1761 status = 1; /* NB: success */
1762 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
1763 keyix = ni->ni_ucastkey.wk_rxkeyix;
1764 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
1765 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
1766 nikey = nt->nt_keyixmap[keyix];
1767 nt->nt_keyixmap[keyix] = NULL;
1771 IEEE80211_NODE_UNLOCK(nt);
1773 if (nikey != NULL) {
1774 KASSERT(nikey == ni,
1775 ("key map out of sync, ni %p nikey %p", ni, nikey));
1776 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1777 "%s: delete key map entry %p<%s> refcnt %d\n",
1778 __func__, ni, ether_sprintf(ni->ni_macaddr),
1779 ieee80211_node_refcnt(ni)-1);
1780 ieee80211_free_node(ni);
1786 * Reclaim a node. If this is the last reference count then
1787 * do the normal free work. Otherwise remove it from the node
1788 * table and mark it gone by clearing the back-reference.
1791 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1793 ieee80211_keyix keyix;
1795 IEEE80211_NODE_LOCK_ASSERT(nt);
1797 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1798 "%s: remove %p<%s> from %s table, refcnt %d\n",
1799 __func__, ni, ether_sprintf(ni->ni_macaddr),
1800 nt->nt_name, ieee80211_node_refcnt(ni)-1);
1802 * Clear any entry in the unicast key mapping table.
1803 * We need to do it here so rx lookups don't find it
1804 * in the mapping table even if it's not in the hash
1805 * table. We cannot depend on the mapping table entry
1806 * being cleared because the node may not be free'd.
1808 keyix = ni->ni_ucastkey.wk_rxkeyix;
1809 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
1810 nt->nt_keyixmap[keyix] == ni) {
1811 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1812 "%s: %p<%s> clear key map entry %u\n",
1813 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
1814 nt->nt_keyixmap[keyix] = NULL;
1815 ieee80211_node_decref(ni); /* NB: don't need free */
1817 if (!ieee80211_node_dectestref(ni)) {
1819 * Other references are present, just remove the
1820 * node from the table so it cannot be found. When
1821 * the references are dropped storage will be
1824 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1825 LIST_REMOVE(ni, ni_hash);
1826 ni->ni_table = NULL; /* clear reference */
1828 _ieee80211_free_node(ni);
1832 * Node table support.
1836 ieee80211_node_table_init(struct ieee80211com *ic,
1837 struct ieee80211_node_table *nt,
1838 const char *name, int inact, int keyixmax)
1840 struct ifnet *ifp = ic->ic_ifp;
1843 IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname);
1844 IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname);
1845 TAILQ_INIT(&nt->nt_node);
1848 nt->nt_inact_init = inact;
1849 nt->nt_keyixmax = keyixmax;
1850 if (nt->nt_keyixmax > 0) {
1851 nt->nt_keyixmap = (struct ieee80211_node **) malloc(
1852 keyixmax * sizeof(struct ieee80211_node *),
1853 M_80211_NODE, M_NOWAIT | M_ZERO);
1854 if (nt->nt_keyixmap == NULL)
1855 if_printf(ic->ic_ifp,
1856 "Cannot allocate key index map with %u entries\n",
1859 nt->nt_keyixmap = NULL;
1863 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
1864 struct ieee80211vap *match)
1866 struct ieee80211_node *ni, *next;
1868 IEEE80211_NODE_LOCK(nt);
1869 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
1870 if (match != NULL && ni->ni_vap != match)
1872 /* XXX can this happen? if so need's work */
1873 if (ni->ni_associd != 0) {
1874 struct ieee80211vap *vap = ni->ni_vap;
1876 if (vap->iv_auth->ia_node_leave != NULL)
1877 vap->iv_auth->ia_node_leave(ni);
1878 if (vap->iv_aid_bitmap != NULL)
1879 IEEE80211_AID_CLR(vap, ni->ni_associd);
1881 ni->ni_wdsvap = NULL; /* clear reference */
1882 node_reclaim(nt, ni);
1884 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
1886 * Make a separate pass to clear references to this vap
1887 * held by DWDS entries. They will not be matched above
1888 * because ni_vap will point to the ap vap but we still
1889 * need to clear ni_wdsvap when the WDS vap is destroyed
1892 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
1893 if (ni->ni_wdsvap == match)
1894 ni->ni_wdsvap = NULL;
1896 IEEE80211_NODE_UNLOCK(nt);
1900 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
1902 ieee80211_node_table_reset(nt, NULL);
1903 if (nt->nt_keyixmap != NULL) {
1905 /* XXX verify all entries are NULL */
1907 for (i = 0; i < nt->nt_keyixmax; i++)
1908 if (nt->nt_keyixmap[i] != NULL)
1909 printf("%s: %s[%u] still active\n", __func__,
1912 free(nt->nt_keyixmap, M_80211_NODE);
1913 nt->nt_keyixmap = NULL;
1915 IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt);
1916 IEEE80211_NODE_LOCK_DESTROY(nt);
1920 * Timeout inactive stations and do related housekeeping.
1921 * Note that we cannot hold the node lock while sending a
1922 * frame as this would lead to a LOR. Instead we use a
1923 * generation number to mark nodes that we've scanned and
1924 * drop the lock and restart a scan if we have to time out
1925 * a node. Since we are single-threaded by virtue of
1926 * controlling the inactivity timer we can be sure this will
1927 * process each node only once.
1930 ieee80211_timeout_stations(struct ieee80211com *ic)
1932 struct ieee80211_node_table *nt = &ic->ic_sta;
1933 struct ieee80211vap *vap;
1934 struct ieee80211_node *ni;
1937 IEEE80211_NODE_ITERATE_LOCK(nt);
1938 gen = ++nt->nt_scangen;
1940 IEEE80211_NODE_LOCK(nt);
1941 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
1942 if (ni->ni_scangen == gen) /* previously handled */
1944 ni->ni_scangen = gen;
1946 * Ignore entries for which have yet to receive an
1947 * authentication frame. These are transient and
1948 * will be reclaimed when the last reference to them
1949 * goes away (when frame xmits complete).
1953 * Only process stations when in RUN state. This
1954 * insures, for example, that we don't timeout an
1955 * inactive station during CAC. Note that CSA state
1956 * is actually handled in ieee80211_node_timeout as
1957 * it applies to more than timeout processing.
1959 if (vap->iv_state != IEEE80211_S_RUN)
1961 /* XXX can vap be NULL? */
1962 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
1963 vap->iv_opmode == IEEE80211_M_STA) &&
1964 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
1967 * Free fragment if not needed anymore
1968 * (last fragment older than 1s).
1969 * XXX doesn't belong here, move to node_age
1971 if (ni->ni_rxfrag[0] != NULL &&
1972 ticks > ni->ni_rxfragstamp + hz) {
1973 m_freem(ni->ni_rxfrag[0]);
1974 ni->ni_rxfrag[0] = NULL;
1976 if (ni->ni_inact > 0) {
1978 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1979 "%s: inact %u inact_reload %u nrates %u",
1980 __func__, ni->ni_inact, ni->ni_inact_reload,
1981 ni->ni_rates.rs_nrates);
1984 * Special case ourself; we may be idle for extended periods
1985 * of time and regardless reclaiming our state is wrong.
1986 * XXX run ic_node_age
1988 if (ni == vap->iv_bss)
1990 if (ni->ni_associd != 0 ||
1991 (vap->iv_opmode == IEEE80211_M_IBSS ||
1992 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
1994 * Age/drain resources held by the station.
1996 ic->ic_node_age(ni);
1998 * Probe the station before time it out. We
1999 * send a null data frame which may not be
2000 * universally supported by drivers (need it
2001 * for ps-poll support so it should be...).
2003 * XXX don't probe the station unless we've
2004 * received a frame from them (and have
2005 * some idea of the rates they are capable
2006 * of); this will get fixed more properly
2007 * soon with better handling of the rate set.
2009 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2010 (0 < ni->ni_inact &&
2011 ni->ni_inact <= vap->iv_inact_probe) &&
2012 ni->ni_rates.rs_nrates != 0) {
2014 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2016 "probe station due to inactivity");
2018 * Grab a reference before unlocking the table
2019 * so the node cannot be reclaimed before we
2020 * send the frame. ieee80211_send_nulldata
2021 * understands we've done this and reclaims the
2022 * ref for us as needed.
2024 ieee80211_ref_node(ni);
2025 IEEE80211_NODE_UNLOCK(nt);
2026 ieee80211_send_nulldata(ni);
2031 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2032 ni->ni_inact <= 0) {
2034 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2035 "station timed out due to inactivity "
2036 "(refcnt %u)", ieee80211_node_refcnt(ni));
2038 * Send a deauthenticate frame and drop the station.
2039 * This is somewhat complicated due to reference counts
2040 * and locking. At this point a station will typically
2041 * have a reference count of 1. ieee80211_node_leave
2042 * will do a "free" of the node which will drop the
2043 * reference count. But in the meantime a reference
2044 * wil be held by the deauth frame. The actual reclaim
2045 * of the node will happen either after the tx is
2046 * completed or by ieee80211_node_leave.
2048 * Separately we must drop the node lock before sending
2049 * in case the driver takes a lock, as this can result
2050 * in a LOR between the node lock and the driver lock.
2052 ieee80211_ref_node(ni);
2053 IEEE80211_NODE_UNLOCK(nt);
2054 if (ni->ni_associd != 0) {
2055 IEEE80211_SEND_MGMT(ni,
2056 IEEE80211_FC0_SUBTYPE_DEAUTH,
2057 IEEE80211_REASON_AUTH_EXPIRE);
2059 ieee80211_node_leave(ni);
2060 ieee80211_free_node(ni);
2061 vap->iv_stats.is_node_timeout++;
2065 IEEE80211_NODE_UNLOCK(nt);
2067 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2071 * Aggressively reclaim resources. This should be used
2072 * only in a critical situation to reclaim mbuf resources.
2075 ieee80211_drain(struct ieee80211com *ic)
2077 struct ieee80211_node_table *nt = &ic->ic_sta;
2078 struct ieee80211vap *vap;
2079 struct ieee80211_node *ni;
2081 IEEE80211_NODE_LOCK(nt);
2082 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2084 * Ignore entries for which have yet to receive an
2085 * authentication frame. These are transient and
2086 * will be reclaimed when the last reference to them
2087 * goes away (when frame xmits complete).
2091 * Only process stations when in RUN state. This
2092 * insures, for example, that we don't timeout an
2093 * inactive station during CAC. Note that CSA state
2094 * is actually handled in ieee80211_node_timeout as
2095 * it applies to more than timeout processing.
2097 if (vap->iv_state != IEEE80211_S_RUN)
2099 /* XXX can vap be NULL? */
2100 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2101 vap->iv_opmode == IEEE80211_M_STA) &&
2102 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2106 * XXX doesn't belong here, move to node_drain
2108 if (ni->ni_rxfrag[0] != NULL) {
2109 m_freem(ni->ni_rxfrag[0]);
2110 ni->ni_rxfrag[0] = NULL;
2113 * Drain resources held by the station.
2115 ic->ic_node_drain(ni);
2117 IEEE80211_NODE_UNLOCK(nt);
2121 * Per-ieee80211com inactivity timer callback.
2124 ieee80211_node_timeout(void *arg)
2126 struct ieee80211com *ic = arg;
2129 * Defer timeout processing if a channel switch is pending.
2130 * We typically need to be mute so not doing things that
2131 * might generate frames is good to handle in one place.
2132 * Supressing the station timeout processing may extend the
2133 * lifetime of inactive stations (by not decrementing their
2134 * idle counters) but this should be ok unless the CSA is
2135 * active for an unusually long time.
2137 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2138 ieee80211_scan_timeout(ic);
2139 ieee80211_timeout_stations(ic);
2140 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2143 ieee80211_erp_timeout(ic);
2144 ieee80211_ht_timeout(ic);
2145 IEEE80211_UNLOCK(ic);
2147 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2148 ieee80211_node_timeout, ic);
2152 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2153 ieee80211_iter_func *f, void *arg)
2155 struct ieee80211_node *ni;
2158 IEEE80211_NODE_ITERATE_LOCK(nt);
2159 gen = ++nt->nt_scangen;
2161 IEEE80211_NODE_LOCK(nt);
2162 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2163 if (ni->ni_scangen != gen) {
2164 ni->ni_scangen = gen;
2165 (void) ieee80211_ref_node(ni);
2166 IEEE80211_NODE_UNLOCK(nt);
2168 ieee80211_free_node(ni);
2172 IEEE80211_NODE_UNLOCK(nt);
2174 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2178 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2180 printf("0x%p: mac %s refcnt %d\n", ni,
2181 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2182 printf("\tscangen %u authmode %u flags 0x%x\n",
2183 ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
2184 printf("\tassocid 0x%x txpower %u vlan %u\n",
2185 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2186 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2187 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2188 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2189 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2190 ni->ni_rxfragstamp);
2191 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2192 node_getrssi(ni), ni->ni_noise,
2193 ni->ni_intval, ni->ni_capinfo);
2194 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2195 ether_sprintf(ni->ni_bssid),
2196 ni->ni_esslen, ni->ni_essid,
2197 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2198 printf("\tinact %u inact_reload %u txrate %u\n",
2199 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2200 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2201 ni->ni_htcap, ni->ni_htparam,
2202 ni->ni_htctlchan, ni->ni_ht2ndchan);
2203 printf("\thtopmode %x htstbc %x chw %u\n",
2204 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2208 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2210 ieee80211_iterate_nodes(nt,
2211 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2215 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2217 struct ieee80211vap *vap;
2219 IEEE80211_LOCK_ASSERT(ic);
2221 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2222 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2223 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2227 ieee80211_notify_erp(struct ieee80211com *ic)
2230 ieee80211_notify_erp_locked(ic);
2231 IEEE80211_UNLOCK(ic);
2235 * Handle a station joining an 11g network.
2238 ieee80211_node_join_11g(struct ieee80211_node *ni)
2240 struct ieee80211com *ic = ni->ni_ic;
2242 IEEE80211_LOCK_ASSERT(ic);
2245 * Station isn't capable of short slot time. Bump
2246 * the count of long slot time stations and disable
2247 * use of short slot time. Note that the actual switch
2248 * over to long slot time use may not occur until the
2249 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2251 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2252 ic->ic_longslotsta++;
2253 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2254 "station needs long slot time, count %d",
2255 ic->ic_longslotsta);
2256 /* XXX vap's w/ conflicting needs won't work */
2257 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2259 * Don't force slot time when switched to turbo
2260 * mode as non-ERP stations won't be present; this
2261 * need only be done when on the normal G channel.
2263 ieee80211_set_shortslottime(ic, 0);
2267 * If the new station is not an ERP station
2268 * then bump the counter and enable protection
2271 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2273 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2274 "station is !ERP, %d non-ERP stations associated",
2277 * If station does not support short preamble
2278 * then we must enable use of Barker preamble.
2280 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2281 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2282 "%s", "station needs long preamble");
2283 ic->ic_flags |= IEEE80211_F_USEBARKER;
2284 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2287 * If protection is configured and this is the first
2288 * indication we should use protection, enable it.
2290 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2291 ic->ic_nonerpsta == 1 &&
2292 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2293 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2294 "%s: enable use of protection\n", __func__);
2295 ic->ic_flags |= IEEE80211_F_USEPROT;
2296 ieee80211_notify_erp_locked(ic);
2299 ni->ni_flags |= IEEE80211_NODE_ERP;
2303 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2305 struct ieee80211com *ic = ni->ni_ic;
2306 struct ieee80211vap *vap = ni->ni_vap;
2309 if (ni->ni_associd == 0) {
2312 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2314 * It would be good to search the bitmap
2315 * more efficiently, but this will do for now.
2317 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2318 if (!IEEE80211_AID_ISSET(vap, aid))
2321 if (aid >= vap->iv_max_aid) {
2322 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2323 ieee80211_node_leave(ni);
2326 ni->ni_associd = aid | 0xc000;
2327 ni->ni_jointime = time_uptime;
2329 IEEE80211_AID_SET(vap, ni->ni_associd);
2330 vap->iv_sta_assoc++;
2333 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2334 ieee80211_ht_node_join(ni);
2335 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2336 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2337 ieee80211_node_join_11g(ni);
2338 IEEE80211_UNLOCK(ic);
2344 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2345 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2346 IEEE80211_NODE_AID(ni),
2347 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2348 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2349 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2350 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2351 ni->ni_flags & IEEE80211_NODE_HT ?
2352 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2353 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2354 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2355 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2356 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2357 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2358 ", fast-frames" : "",
2359 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2363 ieee80211_node_setuptxparms(ni);
2364 ieee80211_ratectl_node_init(ni);
2365 /* give driver a chance to setup state like ni_txrate */
2366 if (ic->ic_newassoc != NULL)
2367 ic->ic_newassoc(ni, newassoc);
2368 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2369 /* tell the authenticator about new station */
2370 if (vap->iv_auth->ia_node_join != NULL)
2371 vap->iv_auth->ia_node_join(ni);
2372 ieee80211_notify_node_join(ni,
2373 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2377 disable_protection(struct ieee80211com *ic)
2379 KASSERT(ic->ic_nonerpsta == 0 &&
2380 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2381 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2384 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2385 /* XXX verify mode? */
2386 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2387 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2388 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2390 ieee80211_notify_erp_locked(ic);
2394 * Handle a station leaving an 11g network.
2397 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2399 struct ieee80211com *ic = ni->ni_ic;
2401 IEEE80211_LOCK_ASSERT(ic);
2403 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2404 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2405 ic->ic_bsschan->ic_flags));
2408 * If a long slot station do the slot time bookkeeping.
2410 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2411 KASSERT(ic->ic_longslotsta > 0,
2412 ("bogus long slot station count %d", ic->ic_longslotsta));
2413 ic->ic_longslotsta--;
2414 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2415 "long slot time station leaves, count now %d",
2416 ic->ic_longslotsta);
2417 if (ic->ic_longslotsta == 0) {
2419 * Re-enable use of short slot time if supported
2420 * and not operating in IBSS mode (per spec).
2422 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2423 ic->ic_opmode != IEEE80211_M_IBSS) {
2424 IEEE80211_DPRINTF(ni->ni_vap,
2425 IEEE80211_MSG_ASSOC,
2426 "%s: re-enable use of short slot time\n",
2428 ieee80211_set_shortslottime(ic, 1);
2433 * If a non-ERP station do the protection-related bookkeeping.
2435 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2436 KASSERT(ic->ic_nonerpsta > 0,
2437 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2439 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2440 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2441 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2442 " (non-ERP sta present)" : "");
2443 if (ic->ic_nonerpsta == 0 &&
2444 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2445 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2446 "%s: disable use of protection\n", __func__);
2447 disable_protection(ic);
2453 * Time out presence of an overlapping bss with non-ERP
2454 * stations. When operating in hostap mode we listen for
2455 * beacons from other stations and if we identify a non-ERP
2456 * station is present we enable protection. To identify
2457 * when all non-ERP stations are gone we time out this
2461 ieee80211_erp_timeout(struct ieee80211com *ic)
2464 IEEE80211_LOCK_ASSERT(ic);
2466 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2467 time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2469 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2470 "%s", "age out non-ERP sta present on channel");
2472 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2473 if (ic->ic_nonerpsta == 0)
2474 disable_protection(ic);
2479 * Handle bookkeeping for station deauthentication/disassociation
2480 * when operating as an ap.
2483 ieee80211_node_leave(struct ieee80211_node *ni)
2485 struct ieee80211com *ic = ni->ni_ic;
2486 struct ieee80211vap *vap = ni->ni_vap;
2487 struct ieee80211_node_table *nt = ni->ni_table;
2489 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2490 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2492 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2493 ("unexpected operating mode %u", vap->iv_opmode));
2495 * If node wasn't previously associated all
2496 * we need to do is reclaim the reference.
2498 /* XXX ibss mode bypasses 11g and notification */
2499 if (ni->ni_associd == 0)
2502 * Tell the authenticator the station is leaving.
2503 * Note that we must do this before yanking the
2504 * association id as the authenticator uses the
2505 * associd to locate it's state block.
2507 if (vap->iv_auth->ia_node_leave != NULL)
2508 vap->iv_auth->ia_node_leave(ni);
2511 IEEE80211_AID_CLR(vap, ni->ni_associd);
2513 vap->iv_sta_assoc--;
2516 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2517 ieee80211_ht_node_leave(ni);
2518 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2519 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2520 ieee80211_node_leave_11g(ni);
2521 IEEE80211_UNLOCK(ic);
2523 * Cleanup station state. In particular clear various
2524 * state that might otherwise be reused if the node
2525 * is reused before the reference count goes to zero
2526 * (and memory is reclaimed).
2528 ieee80211_sta_leave(ni);
2531 * Remove the node from any table it's recorded in and
2532 * drop the caller's reference. Removal from the table
2533 * is important to insure the node is not reprocessed
2537 IEEE80211_NODE_LOCK(nt);
2538 node_reclaim(nt, ni);
2539 IEEE80211_NODE_UNLOCK(nt);
2541 ieee80211_free_node(ni);
2545 struct ieee80211vap *vap;
2547 uint32_t rssi_total;
2551 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2553 struct rssiinfo *info = arg;
2554 struct ieee80211vap *vap = ni->ni_vap;
2557 if (info->vap != vap)
2559 /* only associated stations */
2560 if (ni->ni_associd == 0)
2562 rssi = vap->iv_ic->ic_node_getrssi(ni);
2564 info->rssi_samples++;
2565 info->rssi_total += rssi;
2570 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2572 struct rssiinfo *info = arg;
2573 struct ieee80211vap *vap = ni->ni_vap;
2576 if (info->vap != vap)
2578 /* only neighbors */
2579 /* XXX check bssid */
2580 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2582 rssi = vap->iv_ic->ic_node_getrssi(ni);
2584 info->rssi_samples++;
2585 info->rssi_total += rssi;
2589 #ifdef IEEE80211_SUPPORT_MESH
2591 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
2593 struct rssiinfo *info = arg;
2594 struct ieee80211vap *vap = ni->ni_vap;
2597 if (info->vap != vap)
2599 /* only neighbors that peered successfully */
2600 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
2602 rssi = vap->iv_ic->ic_node_getrssi(ni);
2604 info->rssi_samples++;
2605 info->rssi_total += rssi;
2608 #endif /* IEEE80211_SUPPORT_MESH */
2611 ieee80211_getrssi(struct ieee80211vap *vap)
2613 #define NZ(x) ((x) == 0 ? 1 : (x))
2614 struct ieee80211com *ic = vap->iv_ic;
2615 struct rssiinfo info;
2617 info.rssi_total = 0;
2618 info.rssi_samples = 0;
2620 switch (vap->iv_opmode) {
2621 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
2622 case IEEE80211_M_AHDEMO: /* average of all neighbors */
2623 ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info);
2625 case IEEE80211_M_HOSTAP: /* average of all associated stations */
2626 ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info);
2628 #ifdef IEEE80211_SUPPORT_MESH
2629 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
2630 ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info);
2633 case IEEE80211_M_MONITOR: /* XXX */
2634 case IEEE80211_M_STA: /* use stats from associated ap */
2636 if (vap->iv_bss != NULL)
2637 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
2638 info.rssi_samples = 1;
2641 return info.rssi_total / NZ(info.rssi_samples);
2646 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
2649 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
2651 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
2652 /* for non-station mode return avg'd rssi accounting */
2653 if (vap->iv_opmode != IEEE80211_M_STA)
2654 *rssi = ieee80211_getrssi(vap);