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.
26 * $FreeBSD: head/sys/net80211/ieee80211_node.c 206358 2010-04-07 15:29:13Z rpaulo $
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>
43 #include <net/route.h>
45 #include <netproto/802_11/ieee80211_var.h>
46 #include <netproto/802_11/ieee80211_input.h>
47 #ifdef IEEE80211_SUPPORT_SUPERG
48 #include <netproto/802_11/ieee80211_superg.h>
50 #ifdef IEEE80211_SUPPORT_TDMA
51 #include <netproto/802_11/ieee80211_tdma.h>
53 #include <netproto/802_11/ieee80211_wds.h>
54 #include <netproto/802_11/ieee80211_mesh.h>
55 #include <netproto/802_11/ieee80211_ratectl.h>
60 * IEEE80211_NODE_HASHSIZE must be a power of 2.
62 CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0);
65 * Association id's are managed with a bit vector.
67 #define IEEE80211_AID_SET(_vap, b) \
68 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \
69 (1 << (IEEE80211_AID(b) % 32)))
70 #define IEEE80211_AID_CLR(_vap, b) \
71 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \
72 ~(1 << (IEEE80211_AID(b) % 32)))
73 #define IEEE80211_AID_ISSET(_vap, b) \
74 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32)))
76 #ifdef IEEE80211_DEBUG_REFCNT
77 #define REFCNT_LOC "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line
79 #define REFCNT_LOC "%s %p<%s> refcnt %d\n", __func__
82 static int ieee80211_sta_join1(struct ieee80211_node *);
84 static struct ieee80211_node *node_alloc(struct ieee80211vap *,
85 const uint8_t [IEEE80211_ADDR_LEN]);
86 static void node_cleanup(struct ieee80211_node *);
87 static void node_free(struct ieee80211_node *);
88 static void node_age(struct ieee80211_node *);
89 static int8_t node_getrssi(const struct ieee80211_node *);
90 static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *);
91 static void node_getmimoinfo(const struct ieee80211_node *,
92 struct ieee80211_mimo_info *);
94 static void _ieee80211_free_node(struct ieee80211_node *);
96 static void ieee80211_node_table_init(struct ieee80211com *ic,
97 struct ieee80211_node_table *nt, const char *name,
98 int inact, int keymaxix);
99 static void ieee80211_node_table_reset(struct ieee80211_node_table *,
100 struct ieee80211vap *);
101 static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
102 static void ieee80211_erp_timeout(struct ieee80211com *);
104 MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
105 MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
108 ieee80211_node_attach(struct ieee80211com *ic)
110 /* XXX really want maxlen enforced per-sta */
111 ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
113 ieee80211_node_table_init(ic, &ic->ic_sta, "station",
114 IEEE80211_INACT_INIT, ic->ic_max_keyix);
115 callout_init_mp(&ic->ic_inact);
116 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
117 ieee80211_node_timeout, ic);
119 ic->ic_node_alloc = node_alloc;
120 ic->ic_node_free = node_free;
121 ic->ic_node_cleanup = node_cleanup;
122 ic->ic_node_age = node_age;
123 ic->ic_node_drain = node_age; /* NB: same as age */
124 ic->ic_node_getrssi = node_getrssi;
125 ic->ic_node_getsignal = node_getsignal;
126 ic->ic_node_getmimoinfo = node_getmimoinfo;
129 * Set flags to be propagated to all vap's;
130 * these define default behaviour/configuration.
132 ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
136 ieee80211_node_detach(struct ieee80211com *ic)
139 callout_stop(&ic->ic_inact);
140 ieee80211_node_table_cleanup(&ic->ic_sta);
141 ieee80211_ageq_cleanup(&ic->ic_stageq);
145 ieee80211_node_vattach(struct ieee80211vap *vap)
147 /* NB: driver can override */
148 vap->iv_max_aid = IEEE80211_AID_DEF;
150 /* default station inactivity timer setings */
151 vap->iv_inact_init = IEEE80211_INACT_INIT;
152 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
153 vap->iv_inact_run = IEEE80211_INACT_RUN;
154 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
156 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
157 "%s: init %u auth %u run %u probe %u\n", __func__,
158 vap->iv_inact_init, vap->iv_inact_auth,
159 vap->iv_inact_run, vap->iv_inact_probe);
163 ieee80211_node_latevattach(struct ieee80211vap *vap)
165 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
166 /* XXX should we allow max aid to be zero? */
167 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
168 vap->iv_max_aid = IEEE80211_AID_MIN;
169 if_printf(vap->iv_ifp,
170 "WARNING: max aid too small, changed to %d\n",
173 vap->iv_aid_bitmap = (uint32_t *) kmalloc(
174 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
175 M_80211_NODE, M_INTWAIT | M_ZERO);
176 if (vap->iv_aid_bitmap == NULL) {
177 /* XXX no way to recover */
178 kprintf("%s: no memory for AID bitmap, max aid %d!\n",
179 __func__, vap->iv_max_aid);
184 ieee80211_reset_bss(vap);
186 vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
190 ieee80211_node_vdetach(struct ieee80211vap *vap)
192 struct ieee80211com *ic = vap->iv_ic;
194 ieee80211_node_table_reset(&ic->ic_sta, vap);
195 if (vap->iv_bss != NULL) {
196 ieee80211_free_node(vap->iv_bss);
199 if (vap->iv_aid_bitmap != NULL) {
200 kfree(vap->iv_aid_bitmap, M_80211_NODE);
201 vap->iv_aid_bitmap = NULL;
206 * Port authorize/unauthorize interfaces for use by an authenticator.
210 ieee80211_node_authorize(struct ieee80211_node *ni)
212 struct ieee80211vap *vap = ni->ni_vap;
214 ni->ni_flags |= IEEE80211_NODE_AUTH;
215 ni->ni_inact_reload = vap->iv_inact_run;
216 ni->ni_inact = ni->ni_inact_reload;
218 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
219 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
223 ieee80211_node_unauthorize(struct ieee80211_node *ni)
225 struct ieee80211vap *vap = ni->ni_vap;
227 ni->ni_flags &= ~IEEE80211_NODE_AUTH;
228 ni->ni_inact_reload = vap->iv_inact_auth;
229 if (ni->ni_inact > ni->ni_inact_reload)
230 ni->ni_inact = ni->ni_inact_reload;
232 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
233 "%s: inact_reload %u inact %u", __func__,
234 ni->ni_inact_reload, ni->ni_inact);
238 * Fix tx parameters for a node according to ``association state''.
241 ieee80211_node_setuptxparms(struct ieee80211_node *ni)
243 struct ieee80211vap *vap = ni->ni_vap;
244 enum ieee80211_phymode mode;
246 if (ni->ni_flags & IEEE80211_NODE_HT) {
247 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
248 mode = IEEE80211_MODE_11NA;
250 mode = IEEE80211_MODE_11NG;
251 } else { /* legacy rate handling */
252 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
253 mode = IEEE80211_MODE_STURBO_A;
254 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
255 mode = IEEE80211_MODE_HALF;
256 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
257 mode = IEEE80211_MODE_QUARTER;
258 /* NB: 108A should be handled as 11a */
259 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
260 mode = IEEE80211_MODE_11A;
261 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
262 (ni->ni_flags & IEEE80211_NODE_ERP))
263 mode = IEEE80211_MODE_11G;
265 mode = IEEE80211_MODE_11B;
267 ni->ni_txparms = &vap->iv_txparms[mode];
271 * Set/change the channel. The rate set is also updated as
272 * to insure a consistent view by drivers.
273 * XXX should be private but hostap needs it to deal with CSA
276 ieee80211_node_set_chan(struct ieee80211_node *ni,
277 struct ieee80211_channel *chan)
279 struct ieee80211com *ic = ni->ni_ic;
280 struct ieee80211vap *vap = ni->ni_vap;
281 enum ieee80211_phymode mode;
283 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
286 mode = ieee80211_chan2mode(chan);
287 if (IEEE80211_IS_CHAN_HT(chan)) {
289 * XXX Gotta be careful here; the rate set returned by
290 * ieee80211_get_suprates is actually any HT rate
291 * set so blindly copying it will be bad. We must
292 * install the legacy rate est in ni_rates and the
293 * HT rate set in ni_htrates.
295 ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
297 * Setup bss tx parameters based on operating mode. We
298 * use legacy rates when operating in a mixed HT+non-HT bss
299 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
301 if (mode == IEEE80211_MODE_11NA &&
302 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
303 mode = IEEE80211_MODE_11A;
304 else if (mode == IEEE80211_MODE_11NG &&
305 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
306 mode = IEEE80211_MODE_11G;
307 if (mode == IEEE80211_MODE_11G &&
308 (vap->iv_flags & IEEE80211_F_PUREG) == 0)
309 mode = IEEE80211_MODE_11B;
311 ni->ni_txparms = &vap->iv_txparms[mode];
312 ni->ni_rates = *ieee80211_get_suprates(ic, chan);
316 copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
318 /* propagate useful state */
319 nbss->ni_authmode = obss->ni_authmode;
320 nbss->ni_txpower = obss->ni_txpower;
321 nbss->ni_vlan = obss->ni_vlan;
322 /* XXX statistics? */
323 /* XXX legacy WDS bssid? */
327 ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
329 struct ieee80211com *ic = vap->iv_ic;
330 struct ieee80211_node *ni;
332 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
333 "%s: creating %s on channel %u\n", __func__,
334 ieee80211_opmode_name[vap->iv_opmode],
335 ieee80211_chan2ieee(ic, chan));
337 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
342 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
343 ni->ni_esslen = vap->iv_des_ssid[0].len;
344 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
345 if (vap->iv_bss != NULL)
346 copy_bss(ni, vap->iv_bss);
347 ni->ni_intval = ic->ic_bintval;
348 if (vap->iv_flags & IEEE80211_F_PRIVACY)
349 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
350 if (ic->ic_phytype == IEEE80211_T_FH) {
351 ni->ni_fhdwell = 200; /* XXX */
354 if (vap->iv_opmode == IEEE80211_M_IBSS) {
355 vap->iv_flags |= IEEE80211_F_SIBSS;
356 ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
357 if (vap->iv_flags & IEEE80211_F_DESBSSID)
358 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
360 get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
361 /* clear group bit, add local bit */
362 ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
364 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
365 if (vap->iv_flags & IEEE80211_F_DESBSSID)
366 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
368 #ifdef IEEE80211_SUPPORT_TDMA
369 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
371 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
372 #ifdef IEEE80211_SUPPORT_MESH
373 } else if (vap->iv_opmode == IEEE80211_M_MBSS) {
374 ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
375 memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
379 * Fix the channel and related attributes.
381 /* clear DFS CAC state on previous channel */
382 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
383 ic->ic_bsschan->ic_freq != chan->ic_freq &&
384 IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
385 ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
386 ic->ic_bsschan = chan;
387 ieee80211_node_set_chan(ni, chan);
388 ic->ic_curmode = ieee80211_chan2mode(chan);
390 * Do mode-specific setup.
392 if (IEEE80211_IS_CHAN_FULL(chan)) {
393 if (IEEE80211_IS_CHAN_ANYG(chan)) {
395 * Use a mixed 11b/11g basic rate set.
397 ieee80211_setbasicrates(&ni->ni_rates,
399 if (vap->iv_flags & IEEE80211_F_PUREG) {
401 * Also mark OFDM rates basic so 11b
402 * stations do not join (WiFi compliance).
404 ieee80211_addbasicrates(&ni->ni_rates,
407 } else if (IEEE80211_IS_CHAN_B(chan)) {
409 * Force pure 11b rate set.
411 ieee80211_setbasicrates(&ni->ni_rates,
416 (void) ieee80211_sta_join1(ieee80211_ref_node(ni));
420 * Reset bss state on transition to the INIT state.
421 * Clear any stations from the table (they have been
422 * deauth'd) and reset the bss node (clears key, rate
426 ieee80211_reset_bss(struct ieee80211vap *vap)
428 struct ieee80211com *ic = vap->iv_ic;
429 struct ieee80211_node *ni, *obss;
431 ieee80211_node_table_reset(&ic->ic_sta, vap);
432 /* XXX multi-bss: wrong */
433 ieee80211_reset_erp(ic);
435 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
436 KASSERT(ni != NULL, ("unable to setup inital BSS node"));
438 vap->iv_bss = ieee80211_ref_node(ni);
441 ni->ni_intval = ic->ic_bintval;
442 ieee80211_free_node(obss);
444 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
448 match_ssid(const struct ieee80211_node *ni,
449 int nssid, const struct ieee80211_scan_ssid ssids[])
453 for (i = 0; i < nssid; i++) {
454 if (ni->ni_esslen == ssids[i].len &&
455 memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
462 * Test a node for suitability/compatibility.
465 check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
467 struct ieee80211com *ic = ni->ni_ic;
470 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
472 if (vap->iv_opmode == IEEE80211_M_IBSS) {
473 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
476 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
479 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
480 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
483 /* XXX does this mean privacy is supported or required? */
484 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
487 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
488 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
489 if (rate & IEEE80211_RATE_BASIC)
491 if (vap->iv_des_nssid != 0 &&
492 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
494 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
495 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
500 #ifdef IEEE80211_DEBUG
502 * Display node suitability/compatibility.
505 check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
507 struct ieee80211com *ic = ni->ni_ic;
512 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
514 if (vap->iv_opmode == IEEE80211_M_IBSS) {
515 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
518 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
521 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
522 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
525 /* XXX does this mean privacy is supported or required? */
526 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
529 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
530 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
531 if (rate & IEEE80211_RATE_BASIC)
533 if (vap->iv_des_nssid != 0 &&
534 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
536 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
537 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
540 kprintf(" %c %6D", fail ? '-' : '+', ni->ni_macaddr, ":");
541 kprintf(" %6D%c", ni->ni_bssid, ":", fail & 0x20 ? '!' : ' ');
543 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
544 kprintf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
545 fail & 0x08 ? '!' : ' ');
547 (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
548 (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
550 fail & 0x02 ? '!' : ' ');
552 (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
553 fail & 0x04 ? '!' : ' ');
554 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
555 kprintf("%s\n", fail & 0x10 ? "!" : "");
557 #endif /* IEEE80211_DEBUG */
560 * Handle 802.11 ad hoc network merge. The
561 * convention, set by the Wireless Ethernet Compatibility Alliance
562 * (WECA), is that an 802.11 station will change its BSSID to match
563 * the "oldest" 802.11 ad hoc network, on the same channel, that
564 * has the station's desired SSID. The "oldest" 802.11 network
565 * sends beacons with the greatest TSF timestamp.
567 * The caller is assumed to validate TSF's before attempting a merge.
569 * Return !0 if the BSSID changed, 0 otherwise.
572 ieee80211_ibss_merge(struct ieee80211_node *ni)
574 struct ieee80211vap *vap = ni->ni_vap;
575 #ifdef IEEE80211_DEBUG
576 struct ieee80211com *ic = ni->ni_ic;
579 if (ni == vap->iv_bss ||
580 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
581 /* unchanged, nothing to do */
584 if (!check_bss(vap, ni)) {
585 /* capabilities mismatch */
586 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
587 "%s: merge failed, capabilities mismatch\n", __func__);
588 #ifdef IEEE80211_DEBUG
589 if (ieee80211_msg_assoc(vap))
590 check_bss_debug(vap, ni);
592 vap->iv_stats.is_ibss_capmismatch++;
595 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
596 "%s: new bssid %6D: %s preamble, %s slot time%s\n", __func__,
598 ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
599 ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
600 ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : ""
602 return ieee80211_sta_join1(ieee80211_ref_node(ni));
606 * Calculate HT channel promotion flags for all vaps.
607 * This assumes ni_chan have been setup for each vap.
610 gethtadjustflags(struct ieee80211com *ic)
612 struct ieee80211vap *vap;
617 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
618 if (vap->iv_state < IEEE80211_S_RUN)
620 switch (vap->iv_opmode) {
621 case IEEE80211_M_WDS:
622 case IEEE80211_M_STA:
623 case IEEE80211_M_AHDEMO:
624 case IEEE80211_M_HOSTAP:
625 case IEEE80211_M_IBSS:
626 case IEEE80211_M_MBSS:
627 flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
637 * Check if the current channel needs to change based on whether
638 * any vap's are using HT20/HT40. This is used to sync the state
639 * of ic_curchan after a channel width change on a running vap.
642 ieee80211_sync_curchan(struct ieee80211com *ic)
644 struct ieee80211_channel *c;
646 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
647 if (c != ic->ic_curchan) {
649 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
650 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
651 IEEE80211_UNLOCK(ic);
652 ic->ic_set_channel(ic);
653 ieee80211_radiotap_chan_change(ic);
659 * Setup the current channel. The request channel may be
660 * promoted if other vap's are operating with HT20/HT40.
663 ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
665 if (ic->ic_htcaps & IEEE80211_HTC_HT) {
666 int flags = gethtadjustflags(ic);
668 * Check for channel promotion required to support the
669 * set of running vap's. This assumes we are called
670 * after ni_chan is setup for each vap.
672 /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
673 if (flags > ieee80211_htchanflags(c))
674 c = ieee80211_ht_adjust_channel(ic, c, flags);
676 ic->ic_bsschan = ic->ic_curchan = c;
677 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
678 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
682 * Change the current channel. The channel change is guaranteed to have
683 * happened before the next state change.
686 ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
688 ieee80211_setupcurchan(ic, c);
689 ieee80211_runtask(ic, &ic->ic_chan_task);
693 * Join the specified IBSS/BSS network. The node is assumed to
694 * be passed in with a held reference.
697 ieee80211_sta_join1(struct ieee80211_node *selbs)
699 struct ieee80211vap *vap = selbs->ni_vap;
700 struct ieee80211com *ic = selbs->ni_ic;
701 struct ieee80211_node *obss;
705 * Committed to selbs, setup state.
709 * Check if old+new node have the same address in which
710 * case we can reassociate when operating in sta mode.
712 canreassoc = (obss != NULL &&
713 vap->iv_state == IEEE80211_S_RUN &&
714 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
715 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
717 copy_bss(selbs, obss);
718 ieee80211_node_decref(obss); /* iv_bss reference */
719 ieee80211_free_node(obss); /* station table reference */
720 obss = NULL; /* NB: guard against later use */
724 * Delete unusable rates; we've already checked
725 * that the negotiated rate set is acceptable.
727 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
728 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
730 ieee80211_setcurchan(ic, selbs->ni_chan);
732 * Set the erp state (mostly the slot time) to deal with
733 * the auto-select case; this should be redundant if the
736 ieee80211_reset_erp(ic);
737 ieee80211_wme_initparams(vap);
739 if (vap->iv_opmode == IEEE80211_M_STA) {
742 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
745 * Act as if we received a DEAUTH frame in case we
746 * are invoked from the RUN state. This will cause
747 * us to try to re-authenticate if we are operating
750 ieee80211_new_state(vap, IEEE80211_S_AUTH,
751 IEEE80211_FC0_SUBTYPE_DEAUTH);
754 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
759 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
760 const struct ieee80211_scan_entry *se)
762 struct ieee80211com *ic = vap->iv_ic;
763 struct ieee80211_node *ni;
765 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
771 * Expand scan state into node's format.
772 * XXX may not need all this stuff
774 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
775 ni->ni_esslen = se->se_ssid[1];
776 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
777 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
778 ni->ni_intval = se->se_intval;
779 ni->ni_capinfo = se->se_capinfo;
781 ni->ni_timoff = se->se_timoff;
782 ni->ni_fhdwell = se->se_fhdwell;
783 ni->ni_fhindex = se->se_fhindex;
784 ni->ni_erp = se->se_erp;
785 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
786 ni->ni_noise = se->se_noise;
787 if (vap->iv_opmode == IEEE80211_M_STA) {
788 /* NB: only infrastructure mode requires an associd */
789 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
792 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
793 ieee80211_ies_expand(&ni->ni_ies);
794 #ifdef IEEE80211_SUPPORT_SUPERG
795 if (ni->ni_ies.ath_ie != NULL)
796 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
798 if (ni->ni_ies.htcap_ie != NULL)
799 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
800 if (ni->ni_ies.htinfo_ie != NULL)
801 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
802 #ifdef IEEE80211_SUPPORT_MESH
803 if (ni->ni_ies.meshid_ie != NULL)
804 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
806 #ifdef IEEE80211_SUPPORT_TDMA
807 if (ni->ni_ies.tdma_ie != NULL)
808 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
812 vap->iv_dtim_period = se->se_dtimperiod;
813 vap->iv_dtim_count = 0;
815 /* NB: must be after ni_chan is setup */
816 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
818 if (ieee80211_iserp_rateset(&ni->ni_rates))
819 ni->ni_flags |= IEEE80211_NODE_ERP;
820 ieee80211_node_setuptxparms(ni);
822 return ieee80211_sta_join1(ieee80211_ref_node(ni));
826 * Leave the specified IBSS/BSS network. The node is assumed to
827 * be passed in with a held reference.
830 ieee80211_sta_leave(struct ieee80211_node *ni)
832 struct ieee80211com *ic = ni->ni_ic;
834 ic->ic_node_cleanup(ni);
835 ieee80211_notify_node_leave(ni);
839 * Send a deauthenticate frame and drop the station.
842 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
844 /* NB: bump the refcnt to be sure temporay nodes are not reclaimed */
845 ieee80211_ref_node(ni);
846 if (ni->ni_associd != 0)
847 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
848 ieee80211_node_leave(ni);
849 ieee80211_free_node(ni);
852 static struct ieee80211_node *
853 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
855 struct ieee80211_node *ni;
857 ni = (struct ieee80211_node *) kmalloc(sizeof(struct ieee80211_node),
858 M_80211_NODE, M_INTWAIT | M_ZERO);
863 * Initialize an ie blob with the specified data. If previous
864 * data exists re-use the data block. As a side effect we clear
865 * all references to specific ie's; the caller is required to
869 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
871 /* NB: assumes data+len are the last fields */
872 memset(ies, 0, offsetof(struct ieee80211_ies, data));
873 if (ies->data != NULL && ies->len != len) {
874 /* data size changed */
875 kfree(ies->data, M_80211_NODE_IE);
878 if (ies->data == NULL) {
879 ies->data = (uint8_t *) kmalloc(len, M_80211_NODE_IE, M_INTWAIT);
880 if (ies->data == NULL) {
882 /* NB: pointers have already been zero'd above */
886 memcpy(ies->data, data, len);
892 * Reclaim storage for an ie blob.
895 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
897 if (ies->data != NULL)
898 kfree(ies->data, M_80211_NODE_IE);
902 * Expand an ie blob data contents and to fillin individual
903 * ie pointers. The data blob is assumed to be well-formed;
904 * we don't do any validity checking of ie lengths.
907 ieee80211_ies_expand(struct ieee80211_ies *ies)
916 case IEEE80211_ELEMID_VENDOR:
919 else if (iswmeoui(ie))
921 #ifdef IEEE80211_SUPPORT_SUPERG
922 else if (isatherosoui(ie))
925 #ifdef IEEE80211_SUPPORT_TDMA
926 else if (istdmaoui(ie))
930 case IEEE80211_ELEMID_RSN:
933 case IEEE80211_ELEMID_HTCAP:
936 #ifdef IEEE80211_SUPPORT_MESH
937 case IEEE80211_ELEMID_MESHID:
948 * Reclaim any resources in a node and reset any critical
949 * state. Typically nodes are free'd immediately after,
950 * but in some cases the storage may be reused so we need
951 * to insure consistent state (should probably fix that).
954 node_cleanup(struct ieee80211_node *ni)
956 #define N(a) (sizeof(a)/sizeof(a[0]))
957 struct ieee80211vap *vap = ni->ni_vap;
958 struct ieee80211com *ic = ni->ni_ic;
961 /* NB: preserve ni_table */
962 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
963 if (vap->iv_opmode != IEEE80211_M_STA)
965 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
966 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
967 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
970 * Cleanup any HT-related state.
972 if (ni->ni_flags & IEEE80211_NODE_HT)
973 ieee80211_ht_node_cleanup(ni);
974 #ifdef IEEE80211_SUPPORT_SUPERG
975 else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
976 ieee80211_ff_node_cleanup(ni);
978 #ifdef IEEE80211_SUPPORT_MESH
980 * Cleanup any mesh-related state.
982 if (vap->iv_opmode == IEEE80211_M_MBSS)
983 ieee80211_mesh_node_cleanup(ni);
986 * Clear any staging queue entries.
988 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
991 * Clear AREF flag that marks the authorization refcnt bump
992 * has happened. This is probably not needed as the node
993 * should always be removed from the table so not found but
994 * do it just in case.
995 * Likewise clear the ASSOCID flag as these flags are intended
996 * to be managed in tandem.
998 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1001 * Drain power save queue and, if needed, clear TIM.
1003 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1004 vap->iv_set_tim(ni, 0);
1007 if (ni->ni_challenge != NULL) {
1008 kfree(ni->ni_challenge, M_80211_NODE);
1009 ni->ni_challenge = NULL;
1012 * Preserve SSID, WPA, and WME ie's so the bss node is
1013 * reusable during a re-auth/re-assoc state transition.
1014 * If we remove these data they will not be recreated
1015 * because they come from a probe-response or beacon frame
1016 * which cannot be expected prior to the association-response.
1017 * This should not be an issue when operating in other modes
1018 * as stations leaving always go through a full state transition
1019 * which will rebuild this state.
1021 * XXX does this leave us open to inheriting old state?
1023 for (i = 0; i < N(ni->ni_rxfrag); i++)
1024 if (ni->ni_rxfrag[i] != NULL) {
1025 m_freem(ni->ni_rxfrag[i]);
1026 ni->ni_rxfrag[i] = NULL;
1029 * Must be careful here to remove any key map entry w/o a LOR.
1031 ieee80211_node_delucastkey(ni);
1036 node_free(struct ieee80211_node *ni)
1038 struct ieee80211com *ic = ni->ni_ic;
1040 ieee80211_ratectl_node_deinit(ni);
1041 ic->ic_node_cleanup(ni);
1042 ieee80211_ies_cleanup(&ni->ni_ies);
1043 ieee80211_psq_cleanup(&ni->ni_psq);
1044 kfree(ni, M_80211_NODE);
1048 node_age(struct ieee80211_node *ni)
1050 struct ieee80211vap *vap = ni->ni_vap;
1052 IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta);
1055 * Age frames on the power save queue.
1057 if (ieee80211_node_psq_age(ni) != 0 &&
1058 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1059 vap->iv_set_tim(ni, 0);
1061 * Age out HT resources (e.g. frames on the
1062 * A-MPDU reorder queues).
1064 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1065 ieee80211_ht_node_age(ni);
1069 node_getrssi(const struct ieee80211_node *ni)
1071 uint32_t avgrssi = ni->ni_avgrssi;
1074 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1076 rssi = IEEE80211_RSSI_GET(avgrssi);
1077 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1081 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1083 *rssi = node_getrssi(ni);
1084 *noise = ni->ni_noise;
1088 node_getmimoinfo(const struct ieee80211_node *ni,
1089 struct ieee80211_mimo_info *info)
1091 /* XXX zero data? */
1094 struct ieee80211_node *
1095 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1096 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1098 struct ieee80211com *ic = nt->nt_ic;
1099 struct ieee80211_node *ni;
1102 ni = ic->ic_node_alloc(vap, macaddr);
1104 vap->iv_stats.is_rx_nodealloc++;
1108 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1109 "%s %p<%6D> in %s table\n", __func__, ni,
1110 macaddr, ":", nt->nt_name);
1112 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1113 hash = IEEE80211_NODE_HASH(ic, macaddr);
1114 ieee80211_node_initref(ni); /* mark referenced */
1115 ni->ni_chan = IEEE80211_CHAN_ANYC;
1116 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1117 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1118 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1119 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1120 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1121 ni->ni_inact_reload = nt->nt_inact_init;
1122 ni->ni_inact = ni->ni_inact_reload;
1123 ni->ni_ath_defkeyix = 0x7fff;
1124 ieee80211_psq_init(&ni->ni_psq, "unknown");
1125 #ifdef IEEE80211_SUPPORT_MESH
1126 if (vap->iv_opmode == IEEE80211_M_MBSS)
1127 ieee80211_mesh_node_init(vap, ni);
1129 IEEE80211_NODE_LOCK(nt);
1130 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1131 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1135 IEEE80211_NODE_UNLOCK(nt);
1137 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1138 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1144 * Craft a temporary node suitable for sending a management frame
1145 * to the specified station. We craft only as much state as we
1146 * need to do the work since the node will be immediately reclaimed
1147 * once the send completes.
1149 struct ieee80211_node *
1150 ieee80211_tmp_node(struct ieee80211vap *vap,
1151 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1153 struct ieee80211com *ic = vap->iv_ic;
1154 struct ieee80211_node *ni;
1156 ni = ic->ic_node_alloc(vap, macaddr);
1158 struct ieee80211_node *bss = vap->iv_bss;
1160 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1161 "%s %p<%6D>\n", __func__, ni, macaddr, ":");
1163 ni->ni_table = NULL; /* NB: pedantic */
1164 ni->ni_ic = ic; /* NB: needed to set channel */
1167 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1168 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1169 ieee80211_node_initref(ni); /* mark referenced */
1170 /* NB: required by ieee80211_fix_rate */
1171 ieee80211_node_set_chan(ni, bss->ni_chan);
1172 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1173 IEEE80211_KEYIX_NONE);
1174 ni->ni_txpower = bss->ni_txpower;
1175 /* XXX optimize away */
1176 ieee80211_psq_init(&ni->ni_psq, "unknown");
1179 vap->iv_stats.is_rx_nodealloc++;
1184 struct ieee80211_node *
1185 ieee80211_dup_bss(struct ieee80211vap *vap,
1186 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1188 struct ieee80211com *ic = vap->iv_ic;
1189 struct ieee80211_node *ni;
1191 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1193 struct ieee80211_node *bss = vap->iv_bss;
1195 * Inherit from iv_bss.
1198 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1199 ieee80211_node_set_chan(ni, bss->ni_chan);
1205 * Create a bss node for a legacy WDS vap. The far end does
1206 * not associate so we just create create a new node and
1207 * simulate an association. The caller is responsible for
1208 * installing the node as the bss node and handling any further
1209 * setup work like authorizing the port.
1211 struct ieee80211_node *
1212 ieee80211_node_create_wds(struct ieee80211vap *vap,
1213 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1215 struct ieee80211com *ic = vap->iv_ic;
1216 struct ieee80211_node *ni;
1218 /* XXX check if node already in sta table? */
1219 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1221 ni->ni_wdsvap = vap;
1222 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1224 * Inherit any manually configured settings.
1226 copy_bss(ni, vap->iv_bss);
1227 ieee80211_node_set_chan(ni, chan);
1228 /* NB: propagate ssid so available to WPA supplicant */
1229 ni->ni_esslen = vap->iv_des_ssid[0].len;
1230 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1231 /* NB: no associd for peer */
1233 * There are no management frames to use to
1234 * discover neighbor capabilities, so blindly
1235 * propagate the local configuration.
1237 if (vap->iv_flags & IEEE80211_F_WME)
1238 ni->ni_flags |= IEEE80211_NODE_QOS;
1239 #ifdef IEEE80211_SUPPORT_SUPERG
1240 if (vap->iv_flags & IEEE80211_F_FF)
1241 ni->ni_flags |= IEEE80211_NODE_FF;
1243 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1244 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1246 * Device is HT-capable and HT is enabled for
1247 * the vap; setup HT operation. On return
1248 * ni_chan will be adjusted to an HT channel.
1250 ieee80211_ht_wds_init(ni);
1252 struct ieee80211_channel *c = ni->ni_chan;
1254 * Force a legacy channel to be used.
1256 c = ieee80211_find_channel(ic,
1257 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1258 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1259 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1266 struct ieee80211_node *
1267 #ifdef IEEE80211_DEBUG_REFCNT
1268 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1269 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1271 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1272 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1275 struct ieee80211_node *ni;
1278 IEEE80211_NODE_LOCK_ASSERT(nt);
1280 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1281 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1282 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1283 ieee80211_ref_node(ni); /* mark referenced */
1284 #ifdef IEEE80211_DEBUG_REFCNT
1285 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1286 "%s (%s:%u) %p<%6D> refcnt %d\n", __func__,
1288 ni, ni->ni_macaddr, ":",
1289 ieee80211_node_refcnt(ni));
1297 struct ieee80211_node *
1298 #ifdef IEEE80211_DEBUG_REFCNT
1299 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1300 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1302 ieee80211_find_node(struct ieee80211_node_table *nt,
1303 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1306 struct ieee80211_node *ni;
1308 IEEE80211_NODE_LOCK(nt);
1309 ni = ieee80211_find_node_locked(nt, macaddr);
1310 IEEE80211_NODE_UNLOCK(nt);
1314 struct ieee80211_node *
1315 #ifdef IEEE80211_DEBUG_REFCNT
1316 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1317 const struct ieee80211vap *vap,
1318 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1320 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1321 const struct ieee80211vap *vap,
1322 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1325 struct ieee80211_node *ni;
1328 IEEE80211_NODE_LOCK_ASSERT(nt);
1330 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1331 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1332 if (ni->ni_vap == vap &&
1333 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1334 ieee80211_ref_node(ni); /* mark referenced */
1335 #ifdef IEEE80211_DEBUG_REFCNT
1336 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1337 "%s (%s:%u) %p<%6D> refcnt %d\n", __func__,
1339 ni, ni->ni_macaddr, ":",
1340 ieee80211_node_refcnt(ni));
1348 struct ieee80211_node *
1349 #ifdef IEEE80211_DEBUG_REFCNT
1350 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1351 const struct ieee80211vap *vap,
1352 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1354 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1355 const struct ieee80211vap *vap,
1356 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1359 struct ieee80211_node *ni;
1361 IEEE80211_NODE_LOCK(nt);
1362 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1363 IEEE80211_NODE_UNLOCK(nt);
1368 * Fake up a node; this handles node discovery in adhoc mode.
1369 * Note that for the driver's benefit we we treat this like
1370 * an association so the driver has an opportunity to setup
1371 * it's private state.
1373 struct ieee80211_node *
1374 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1375 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1377 struct ieee80211_node *ni;
1379 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1380 "%s: mac<%6D>\n", __func__, macaddr, ":");
1381 ni = ieee80211_dup_bss(vap, macaddr);
1383 struct ieee80211com *ic = vap->iv_ic;
1385 /* XXX no rate negotiation; just dup */
1386 ni->ni_rates = vap->iv_bss->ni_rates;
1387 if (ieee80211_iserp_rateset(&ni->ni_rates))
1388 ni->ni_flags |= IEEE80211_NODE_ERP;
1389 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1391 * In adhoc demo mode there are no management
1392 * frames to use to discover neighbor capabilities,
1393 * so blindly propagate the local configuration
1394 * so we can do interesting things (e.g. use
1395 * WME to disable ACK's).
1397 if (vap->iv_flags & IEEE80211_F_WME)
1398 ni->ni_flags |= IEEE80211_NODE_QOS;
1399 #ifdef IEEE80211_SUPPORT_SUPERG
1400 if (vap->iv_flags & IEEE80211_F_FF)
1401 ni->ni_flags |= IEEE80211_NODE_FF;
1404 ieee80211_node_setuptxparms(ni);
1405 if (ic->ic_newassoc != NULL)
1406 ic->ic_newassoc(ni, 1);
1407 /* XXX not right for 802.1x/WPA */
1408 ieee80211_node_authorize(ni);
1414 ieee80211_init_neighbor(struct ieee80211_node *ni,
1415 const struct ieee80211_frame *wh,
1416 const struct ieee80211_scanparams *sp)
1418 ni->ni_esslen = sp->ssid[1];
1419 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1420 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1421 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1422 ni->ni_intval = sp->bintval;
1423 ni->ni_capinfo = sp->capinfo;
1424 ni->ni_chan = ni->ni_ic->ic_curchan;
1425 ni->ni_fhdwell = sp->fhdwell;
1426 ni->ni_fhindex = sp->fhindex;
1427 ni->ni_erp = sp->erp;
1428 ni->ni_timoff = sp->timoff;
1429 #ifdef IEEE80211_SUPPORT_MESH
1430 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1431 ieee80211_mesh_init_neighbor(ni, wh, sp);
1433 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1434 ieee80211_ies_expand(&ni->ni_ies);
1435 if (ni->ni_ies.wme_ie != NULL)
1436 ni->ni_flags |= IEEE80211_NODE_QOS;
1438 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1439 #ifdef IEEE80211_SUPPORT_SUPERG
1440 if (ni->ni_ies.ath_ie != NULL)
1441 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1445 /* NB: must be after ni_chan is setup */
1446 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1447 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1448 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1452 * Do node discovery in adhoc mode on receipt of a beacon
1453 * or probe response frame. Note that for the driver's
1454 * benefit we we treat this like an association so the
1455 * driver has an opportunity to setup it's private state.
1457 struct ieee80211_node *
1458 ieee80211_add_neighbor(struct ieee80211vap *vap,
1459 const struct ieee80211_frame *wh,
1460 const struct ieee80211_scanparams *sp)
1462 struct ieee80211_node *ni;
1464 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1465 "%s: mac<%6D>\n", __func__, wh->i_addr2, ":");
1466 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1468 struct ieee80211com *ic = vap->iv_ic;
1470 ieee80211_init_neighbor(ni, wh, sp);
1471 if (ieee80211_iserp_rateset(&ni->ni_rates))
1472 ni->ni_flags |= IEEE80211_NODE_ERP;
1473 ieee80211_node_setuptxparms(ni);
1474 if (ic->ic_newassoc != NULL)
1475 ic->ic_newassoc(ni, 1);
1476 /* XXX not right for 802.1x/WPA */
1477 ieee80211_node_authorize(ni);
1482 #define IS_PROBEREQ(wh) \
1483 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1484 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1485 #define IS_BCAST_PROBEREQ(wh) \
1486 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1487 ((const struct ieee80211_frame *)(wh))->i_addr3))
1489 static __inline struct ieee80211_node *
1490 _find_rxnode(struct ieee80211_node_table *nt,
1491 const struct ieee80211_frame_min *wh)
1493 if (IS_BCAST_PROBEREQ(wh))
1494 return NULL; /* spam bcast probe req to all vap's */
1495 return ieee80211_find_node_locked(nt, wh->i_addr2);
1499 * Locate the node for sender, track state, and then pass the
1500 * (referenced) node up to the 802.11 layer for its use. Note
1501 * we can return NULL if the sender is not in the table.
1503 struct ieee80211_node *
1504 #ifdef IEEE80211_DEBUG_REFCNT
1505 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1506 const struct ieee80211_frame_min *wh, const char *func, int line)
1508 ieee80211_find_rxnode(struct ieee80211com *ic,
1509 const struct ieee80211_frame_min *wh)
1512 struct ieee80211_node_table *nt;
1513 struct ieee80211_node *ni;
1516 IEEE80211_NODE_LOCK(nt);
1517 ni = _find_rxnode(nt, wh);
1518 IEEE80211_NODE_UNLOCK(nt);
1524 * Like ieee80211_find_rxnode but use the supplied h/w
1525 * key index as a hint to locate the node in the key
1526 * mapping table. If an entry is present at the key
1527 * index we return it; otherwise do a normal lookup and
1528 * update the mapping table if the station has a unicast
1529 * key assigned to it.
1531 struct ieee80211_node *
1532 #ifdef IEEE80211_DEBUG_REFCNT
1533 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1534 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1535 const char *func, int line)
1537 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1538 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1541 struct ieee80211_node_table *nt;
1542 struct ieee80211_node *ni;
1545 IEEE80211_NODE_LOCK(nt);
1546 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1547 ni = nt->nt_keyixmap[keyix];
1551 ni = _find_rxnode(nt, wh);
1552 if (ni != NULL && nt->nt_keyixmap != NULL) {
1554 * If the station has a unicast key cache slot
1555 * assigned update the key->node mapping table.
1557 keyix = ni->ni_ucastkey.wk_rxkeyix;
1558 /* XXX can keyixmap[keyix] != NULL? */
1559 if (keyix < nt->nt_keyixmax &&
1560 nt->nt_keyixmap[keyix] == NULL) {
1561 IEEE80211_DPRINTF(ni->ni_vap,
1563 "%s: add key map entry %p<%6D> refcnt %d\n",
1564 __func__, ni, ni->ni_macaddr, ":",
1565 ieee80211_node_refcnt(ni)+1);
1566 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1570 if (IS_BCAST_PROBEREQ(wh))
1571 ni = NULL; /* spam bcast probe req to all vap's */
1573 ieee80211_ref_node(ni);
1575 IEEE80211_NODE_UNLOCK(nt);
1579 #undef IS_BCAST_PROBEREQ
1583 * Return a reference to the appropriate node for sending
1584 * a data frame. This handles node discovery in adhoc networks.
1586 struct ieee80211_node *
1587 #ifdef IEEE80211_DEBUG_REFCNT
1588 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1589 const uint8_t macaddr[IEEE80211_ADDR_LEN],
1590 const char *func, int line)
1592 ieee80211_find_txnode(struct ieee80211vap *vap,
1593 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1596 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
1597 struct ieee80211_node *ni;
1600 * The destination address should be in the node table
1601 * unless this is a multicast/broadcast frame. We can
1602 * also optimize station mode operation, all frames go
1605 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
1606 IEEE80211_NODE_LOCK(nt);
1607 if (vap->iv_opmode == IEEE80211_M_STA ||
1608 vap->iv_opmode == IEEE80211_M_WDS ||
1609 IEEE80211_IS_MULTICAST(macaddr))
1610 ni = ieee80211_ref_node(vap->iv_bss);
1612 ni = ieee80211_find_node_locked(nt, macaddr);
1613 IEEE80211_NODE_UNLOCK(nt);
1616 if (vap->iv_opmode == IEEE80211_M_IBSS ||
1617 vap->iv_opmode == IEEE80211_M_AHDEMO) {
1619 * In adhoc mode cons up a node for the destination.
1620 * Note that we need an additional reference for the
1621 * caller to be consistent with
1622 * ieee80211_find_node_locked.
1624 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
1626 (void) ieee80211_ref_node(ni);
1628 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
1629 "no node, discard frame (%s)", __func__);
1630 vap->iv_stats.is_tx_nonode++;
1637 _ieee80211_free_node(struct ieee80211_node *ni)
1639 struct ieee80211_node_table *nt = ni->ni_table;
1642 * NB: careful about referencing the vap as it may be
1643 * gone if the last reference was held by a driver.
1644 * We know the com will always be present so it's safe
1645 * to use ni_ic below to reclaim resources.
1648 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1649 "%s %p<%6D> in %s table\n", __func__, ni,
1650 ni->ni_macaddr, ":",
1651 nt != NULL ? nt->nt_name : "<gone>");
1653 if (ni->ni_associd != 0) {
1654 struct ieee80211vap *vap = ni->ni_vap;
1655 if (vap->iv_aid_bitmap != NULL)
1656 IEEE80211_AID_CLR(vap, ni->ni_associd);
1659 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1660 LIST_REMOVE(ni, ni_hash);
1662 ni->ni_ic->ic_node_free(ni);
1666 #ifdef IEEE80211_DEBUG_REFCNT
1667 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
1669 ieee80211_free_node(struct ieee80211_node *ni)
1672 struct ieee80211_node_table *nt = ni->ni_table;
1674 #ifdef IEEE80211_DEBUG_REFCNT
1675 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1676 "%s (%s:%u) %p<%6D> refcnt %d\n", __func__, func, line, ni,
1677 ni->ni_macaddr, ":", ieee80211_node_refcnt(ni)-1);
1680 IEEE80211_NODE_LOCK(nt);
1681 if (ieee80211_node_dectestref(ni)) {
1683 * Last reference, reclaim state.
1685 _ieee80211_free_node(ni);
1686 } else if (ieee80211_node_refcnt(ni) == 1 &&
1687 nt->nt_keyixmap != NULL) {
1688 ieee80211_keyix keyix;
1690 * Check for a last reference in the key mapping table.
1692 keyix = ni->ni_ucastkey.wk_rxkeyix;
1693 if (keyix < nt->nt_keyixmax &&
1694 nt->nt_keyixmap[keyix] == ni) {
1695 IEEE80211_DPRINTF(ni->ni_vap,
1697 "%s: %p<%6D> clear key map entry", __func__,
1698 ni, ni->ni_macaddr, ":");
1699 nt->nt_keyixmap[keyix] = NULL;
1700 ieee80211_node_decref(ni); /* XXX needed? */
1701 _ieee80211_free_node(ni);
1704 IEEE80211_NODE_UNLOCK(nt);
1706 if (ieee80211_node_dectestref(ni))
1707 _ieee80211_free_node(ni);
1712 * Reclaim a unicast key and clear any key cache state.
1715 ieee80211_node_delucastkey(struct ieee80211_node *ni)
1717 struct ieee80211com *ic = ni->ni_ic;
1718 struct ieee80211_node_table *nt = &ic->ic_sta;
1719 struct ieee80211_node *nikey;
1720 ieee80211_keyix keyix;
1721 int isowned, status;
1724 * NB: We must beware of LOR here; deleting the key
1725 * can cause the crypto layer to block traffic updates
1726 * which can generate a LOR against the node table lock;
1727 * grab it here and stash the key index for our use below.
1729 * Must also beware of recursion on the node table lock.
1730 * When called from node_cleanup we may already have
1731 * the node table lock held. Unfortunately there's no
1732 * way to separate out this path so we must do this
1735 isowned = IEEE80211_NODE_IS_LOCKED(nt);
1737 IEEE80211_NODE_LOCK(nt);
1739 status = 1; /* NB: success */
1740 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
1741 keyix = ni->ni_ucastkey.wk_rxkeyix;
1742 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
1743 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
1744 nikey = nt->nt_keyixmap[keyix];
1745 nt->nt_keyixmap[keyix] = NULL;
1749 IEEE80211_NODE_UNLOCK(nt);
1751 if (nikey != NULL) {
1752 KASSERT(nikey == ni,
1753 ("key map out of sync, ni %p nikey %p", ni, nikey));
1754 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1755 "%s: delete key map entry %p<%6D> refcnt %d\n",
1756 __func__, ni, ni->ni_macaddr, ":",
1757 ieee80211_node_refcnt(ni)-1);
1758 ieee80211_free_node(ni);
1764 * Reclaim a node. If this is the last reference count then
1765 * do the normal free work. Otherwise remove it from the node
1766 * table and mark it gone by clearing the back-reference.
1769 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1771 ieee80211_keyix keyix;
1773 IEEE80211_NODE_LOCK_ASSERT(nt);
1775 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1776 "%s: remove %p<%6D> from %s table, refcnt %d\n",
1777 __func__, ni, ni->ni_macaddr, ":",
1778 nt->nt_name, ieee80211_node_refcnt(ni)-1);
1780 * Clear any entry in the unicast key mapping table.
1781 * We need to do it here so rx lookups don't find it
1782 * in the mapping table even if it's not in the hash
1783 * table. We cannot depend on the mapping table entry
1784 * being cleared because the node may not be free'd.
1786 keyix = ni->ni_ucastkey.wk_rxkeyix;
1787 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
1788 nt->nt_keyixmap[keyix] == ni) {
1789 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1790 "%s: %p<%6D> clear key map entry %u\n",
1791 __func__, ni, ni->ni_macaddr, ":", keyix);
1792 nt->nt_keyixmap[keyix] = NULL;
1793 ieee80211_node_decref(ni); /* NB: don't need free */
1795 if (!ieee80211_node_dectestref(ni)) {
1797 * Other references are present, just remove the
1798 * node from the table so it cannot be found. When
1799 * the references are dropped storage will be
1802 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1803 LIST_REMOVE(ni, ni_hash);
1804 ni->ni_table = NULL; /* clear reference */
1806 _ieee80211_free_node(ni);
1810 * Node table support.
1814 ieee80211_node_table_init(struct ieee80211com *ic,
1815 struct ieee80211_node_table *nt,
1816 const char *name, int inact, int keyixmax)
1818 struct ifnet *ifp = ic->ic_ifp;
1821 IEEE80211_NODE_LOCK_INIT(nt, ifp->if_xname);
1822 IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ifp->if_xname);
1823 TAILQ_INIT(&nt->nt_node);
1826 nt->nt_inact_init = inact;
1827 nt->nt_keyixmax = keyixmax;
1828 if (nt->nt_keyixmax > 0) {
1829 nt->nt_keyixmap = (struct ieee80211_node **) kmalloc(
1830 keyixmax * sizeof(struct ieee80211_node *),
1831 M_80211_NODE, M_INTWAIT | M_ZERO);
1832 if (nt->nt_keyixmap == NULL)
1833 if_printf(ic->ic_ifp,
1834 "Cannot allocate key index map with %u entries\n",
1837 nt->nt_keyixmap = NULL;
1841 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
1842 struct ieee80211vap *match)
1844 struct ieee80211_node *ni, *next;
1846 IEEE80211_NODE_LOCK(nt);
1847 TAILQ_FOREACH_MUTABLE(ni, &nt->nt_node, ni_list, next) {
1848 if (match != NULL && ni->ni_vap != match)
1850 /* XXX can this happen? if so need's work */
1851 if (ni->ni_associd != 0) {
1852 struct ieee80211vap *vap = ni->ni_vap;
1854 if (vap->iv_auth->ia_node_leave != NULL)
1855 vap->iv_auth->ia_node_leave(ni);
1856 if (vap->iv_aid_bitmap != NULL)
1857 IEEE80211_AID_CLR(vap, ni->ni_associd);
1859 ni->ni_wdsvap = NULL; /* clear reference */
1860 node_reclaim(nt, ni);
1862 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
1864 * Make a separate pass to clear references to this vap
1865 * held by DWDS entries. They will not be matched above
1866 * because ni_vap will point to the ap vap but we still
1867 * need to clear ni_wdsvap when the WDS vap is destroyed
1870 TAILQ_FOREACH_MUTABLE(ni, &nt->nt_node, ni_list, next)
1871 if (ni->ni_wdsvap == match)
1872 ni->ni_wdsvap = NULL;
1874 IEEE80211_NODE_UNLOCK(nt);
1878 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
1880 ieee80211_node_table_reset(nt, NULL);
1881 if (nt->nt_keyixmap != NULL) {
1883 /* XXX verify all entries are NULL */
1885 for (i = 0; i < nt->nt_keyixmax; i++)
1886 if (nt->nt_keyixmap[i] != NULL)
1887 kprintf("%s: %s[%u] still active\n", __func__,
1890 kfree(nt->nt_keyixmap, M_80211_NODE);
1891 nt->nt_keyixmap = NULL;
1893 IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt);
1894 IEEE80211_NODE_LOCK_DESTROY(nt);
1898 * Timeout inactive stations and do related housekeeping.
1899 * Note that we cannot hold the node lock while sending a
1900 * frame as this would lead to a LOR. Instead we use a
1901 * generation number to mark nodes that we've scanned and
1902 * drop the lock and restart a scan if we have to time out
1903 * a node. Since we are single-threaded by virtue of
1904 * controlling the inactivity timer we can be sure this will
1905 * process each node only once.
1908 ieee80211_timeout_stations(struct ieee80211com *ic)
1910 struct ieee80211_node_table *nt = &ic->ic_sta;
1911 struct ieee80211vap *vap;
1912 struct ieee80211_node *ni;
1915 IEEE80211_NODE_ITERATE_LOCK(nt);
1916 gen = ++nt->nt_scangen;
1918 IEEE80211_NODE_LOCK(nt);
1919 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
1920 if (ni->ni_scangen == gen) /* previously handled */
1922 ni->ni_scangen = gen;
1924 * Ignore entries for which have yet to receive an
1925 * authentication frame. These are transient and
1926 * will be reclaimed when the last reference to them
1927 * goes away (when frame xmits complete).
1931 * Only process stations when in RUN state. This
1932 * insures, for example, that we don't timeout an
1933 * inactive station during CAC. Note that CSA state
1934 * is actually handled in ieee80211_node_timeout as
1935 * it applies to more than timeout processing.
1937 if (vap->iv_state != IEEE80211_S_RUN)
1939 /* XXX can vap be NULL? */
1940 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
1941 vap->iv_opmode == IEEE80211_M_STA) &&
1942 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
1945 * Free fragment if not needed anymore
1946 * (last fragment older than 1s).
1947 * XXX doesn't belong here, move to node_age
1949 if (ni->ni_rxfrag[0] != NULL &&
1950 ticks > ni->ni_rxfragstamp + hz) {
1951 m_freem(ni->ni_rxfrag[0]);
1952 ni->ni_rxfrag[0] = NULL;
1954 if (ni->ni_inact > 0) {
1956 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1957 "%s: inact %u inact_reload %u nrates %u",
1958 __func__, ni->ni_inact, ni->ni_inact_reload,
1959 ni->ni_rates.rs_nrates);
1962 * Special case ourself; we may be idle for extended periods
1963 * of time and regardless reclaiming our state is wrong.
1964 * XXX run ic_node_age
1966 if (ni == vap->iv_bss)
1968 if (ni->ni_associd != 0 ||
1969 (vap->iv_opmode == IEEE80211_M_IBSS ||
1970 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
1972 * Age/drain resources held by the station.
1974 ic->ic_node_age(ni);
1976 * Probe the station before time it out. We
1977 * send a null data frame which may not be
1978 * universally supported by drivers (need it
1979 * for ps-poll support so it should be...).
1981 * XXX don't probe the station unless we've
1982 * received a frame from them (and have
1983 * some idea of the rates they are capable
1984 * of); this will get fixed more properly
1985 * soon with better handling of the rate set.
1987 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
1988 (0 < ni->ni_inact &&
1989 ni->ni_inact <= vap->iv_inact_probe) &&
1990 ni->ni_rates.rs_nrates != 0) {
1992 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
1994 "probe station due to inactivity");
1996 * Grab a reference before unlocking the table
1997 * so the node cannot be reclaimed before we
1998 * send the frame. ieee80211_send_nulldata
1999 * understands we've done this and reclaims the
2000 * ref for us as needed.
2002 ieee80211_ref_node(ni);
2003 IEEE80211_NODE_UNLOCK(nt);
2004 ieee80211_send_nulldata(ni);
2009 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2010 ni->ni_inact <= 0) {
2012 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2013 "station timed out due to inactivity "
2014 "(refcnt %u)", ieee80211_node_refcnt(ni));
2016 * Send a deauthenticate frame and drop the station.
2017 * This is somewhat complicated due to reference counts
2018 * and locking. At this point a station will typically
2019 * have a reference count of 1. ieee80211_node_leave
2020 * will do a "free" of the node which will drop the
2021 * reference count. But in the meantime a reference
2022 * wil be held by the deauth frame. The actual reclaim
2023 * of the node will happen either after the tx is
2024 * completed or by ieee80211_node_leave.
2026 * Separately we must drop the node lock before sending
2027 * in case the driver takes a lock, as this can result
2028 * in a LOR between the node lock and the driver lock.
2030 ieee80211_ref_node(ni);
2031 IEEE80211_NODE_UNLOCK(nt);
2032 if (ni->ni_associd != 0) {
2033 IEEE80211_SEND_MGMT(ni,
2034 IEEE80211_FC0_SUBTYPE_DEAUTH,
2035 IEEE80211_REASON_AUTH_EXPIRE);
2037 ieee80211_node_leave(ni);
2038 ieee80211_free_node(ni);
2039 vap->iv_stats.is_node_timeout++;
2043 IEEE80211_NODE_UNLOCK(nt);
2045 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2049 * Aggressively reclaim resources. This should be used
2050 * only in a critical situation to reclaim mbuf resources.
2053 ieee80211_drain(struct ieee80211com *ic)
2055 struct ieee80211_node_table *nt = &ic->ic_sta;
2056 struct ieee80211vap *vap;
2057 struct ieee80211_node *ni;
2059 IEEE80211_NODE_LOCK(nt);
2060 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2062 * Ignore entries for which have yet to receive an
2063 * authentication frame. These are transient and
2064 * will be reclaimed when the last reference to them
2065 * goes away (when frame xmits complete).
2069 * Only process stations when in RUN state. This
2070 * insures, for example, that we don't timeout an
2071 * inactive station during CAC. Note that CSA state
2072 * is actually handled in ieee80211_node_timeout as
2073 * it applies to more than timeout processing.
2075 if (vap->iv_state != IEEE80211_S_RUN)
2077 /* XXX can vap be NULL? */
2078 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2079 vap->iv_opmode == IEEE80211_M_STA) &&
2080 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2084 * XXX doesn't belong here, move to node_drain
2086 if (ni->ni_rxfrag[0] != NULL) {
2087 m_freem(ni->ni_rxfrag[0]);
2088 ni->ni_rxfrag[0] = NULL;
2091 * Drain resources held by the station.
2093 ic->ic_node_drain(ni);
2095 IEEE80211_NODE_UNLOCK(nt);
2099 * Per-ieee80211com inactivity timer callback.
2102 ieee80211_node_timeout(void *arg)
2104 struct ieee80211com *ic = arg;
2107 * Defer timeout processing if a channel switch is pending.
2108 * We typically need to be mute so not doing things that
2109 * might generate frames is good to handle in one place.
2110 * Supressing the station timeout processing may extend the
2111 * lifetime of inactive stations (by not decrementing their
2112 * idle counters) but this should be ok unless the CSA is
2113 * active for an unusually long time.
2115 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2116 ieee80211_scan_timeout(ic);
2117 ieee80211_timeout_stations(ic);
2118 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2121 ieee80211_erp_timeout(ic);
2122 ieee80211_ht_timeout(ic);
2123 IEEE80211_UNLOCK(ic);
2125 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2126 ieee80211_node_timeout, ic);
2130 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2131 ieee80211_iter_func *f, void *arg)
2133 struct ieee80211_node *ni;
2136 IEEE80211_NODE_ITERATE_LOCK(nt);
2137 gen = ++nt->nt_scangen;
2139 IEEE80211_NODE_LOCK(nt);
2140 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2141 if (ni->ni_scangen != gen) {
2142 ni->ni_scangen = gen;
2143 (void) ieee80211_ref_node(ni);
2144 IEEE80211_NODE_UNLOCK(nt);
2146 ieee80211_free_node(ni);
2150 IEEE80211_NODE_UNLOCK(nt);
2152 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2156 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2158 kprintf("0x%p: mac %6D refcnt %d\n", ni, ni->ni_macaddr, ":",
2159 ieee80211_node_refcnt(ni));
2160 kprintf("\tscangen %u authmode %u flags 0x%x\n",
2161 ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
2162 kprintf("\tassocid 0x%x txpower %u vlan %u\n",
2163 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2164 kprintf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2165 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2166 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2167 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2168 ni->ni_rxfragstamp);
2169 kprintf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2170 node_getrssi(ni), ni->ni_noise,
2171 ni->ni_intval, ni->ni_capinfo);
2172 kprintf("\tbssid %6D essid \"%.*s\" channel %u:0x%x\n",
2174 ni->ni_esslen, ni->ni_essid,
2175 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2176 kprintf("\tinact %u inact_reload %u txrate %u\n",
2177 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2178 kprintf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2179 ni->ni_htcap, ni->ni_htparam,
2180 ni->ni_htctlchan, ni->ni_ht2ndchan);
2181 kprintf("\thtopmode %x htstbc %x chw %u\n",
2182 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2186 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2188 ieee80211_iterate_nodes(nt,
2189 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2193 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2195 struct ieee80211vap *vap;
2197 IEEE80211_LOCK_ASSERT(ic);
2199 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2200 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2201 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2205 ieee80211_notify_erp(struct ieee80211com *ic)
2208 ieee80211_notify_erp_locked(ic);
2209 IEEE80211_UNLOCK(ic);
2213 * Handle a station joining an 11g network.
2216 ieee80211_node_join_11g(struct ieee80211_node *ni)
2218 struct ieee80211com *ic = ni->ni_ic;
2220 IEEE80211_LOCK_ASSERT(ic);
2223 * Station isn't capable of short slot time. Bump
2224 * the count of long slot time stations and disable
2225 * use of short slot time. Note that the actual switch
2226 * over to long slot time use may not occur until the
2227 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2229 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2230 ic->ic_longslotsta++;
2231 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2232 "station needs long slot time, count %d",
2233 ic->ic_longslotsta);
2234 /* XXX vap's w/ conflicting needs won't work */
2235 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2237 * Don't force slot time when switched to turbo
2238 * mode as non-ERP stations won't be present; this
2239 * need only be done when on the normal G channel.
2241 ieee80211_set_shortslottime(ic, 0);
2245 * If the new station is not an ERP station
2246 * then bump the counter and enable protection
2249 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2251 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2252 "station is !ERP, %d non-ERP stations associated",
2255 * If station does not support short preamble
2256 * then we must enable use of Barker preamble.
2258 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2259 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2260 "%s", "station needs long preamble");
2261 ic->ic_flags |= IEEE80211_F_USEBARKER;
2262 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2265 * If protection is configured and this is the first
2266 * indication we should use protection, enable it.
2268 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2269 ic->ic_nonerpsta == 1 &&
2270 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2271 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2272 "%s: enable use of protection\n", __func__);
2273 ic->ic_flags |= IEEE80211_F_USEPROT;
2274 ieee80211_notify_erp_locked(ic);
2277 ni->ni_flags |= IEEE80211_NODE_ERP;
2281 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2283 struct ieee80211com *ic = ni->ni_ic;
2284 struct ieee80211vap *vap = ni->ni_vap;
2287 if (ni->ni_associd == 0) {
2290 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2292 * It would be good to search the bitmap
2293 * more efficiently, but this will do for now.
2295 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2296 if (!IEEE80211_AID_ISSET(vap, aid))
2299 if (aid >= vap->iv_max_aid) {
2300 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2301 ieee80211_node_leave(ni);
2304 ni->ni_associd = aid | 0xc000;
2305 ni->ni_jointime = time_second;
2307 IEEE80211_AID_SET(vap, ni->ni_associd);
2308 vap->iv_sta_assoc++;
2311 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2312 ieee80211_ht_node_join(ni);
2313 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2314 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2315 ieee80211_node_join_11g(ni);
2316 IEEE80211_UNLOCK(ic);
2322 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2323 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2324 IEEE80211_NODE_AID(ni),
2325 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2326 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2327 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2328 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2329 ni->ni_flags & IEEE80211_NODE_HT ?
2330 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2331 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2332 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2333 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2334 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2335 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2336 ", fast-frames" : "",
2337 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2341 ieee80211_node_setuptxparms(ni);
2342 /* give driver a chance to setup state like ni_txrate */
2343 if (ic->ic_newassoc != NULL)
2344 ic->ic_newassoc(ni, newassoc);
2345 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2346 /* tell the authenticator about new station */
2347 if (vap->iv_auth->ia_node_join != NULL)
2348 vap->iv_auth->ia_node_join(ni);
2349 ieee80211_notify_node_join(ni,
2350 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2354 disable_protection(struct ieee80211com *ic)
2356 KASSERT(ic->ic_nonerpsta == 0 &&
2357 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2358 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2361 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2362 /* XXX verify mode? */
2363 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2364 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2365 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2367 ieee80211_notify_erp_locked(ic);
2371 * Handle a station leaving an 11g network.
2374 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2376 struct ieee80211com *ic = ni->ni_ic;
2378 IEEE80211_LOCK_ASSERT(ic);
2380 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2381 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2382 ic->ic_bsschan->ic_flags));
2385 * If a long slot station do the slot time bookkeeping.
2387 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2388 KASSERT(ic->ic_longslotsta > 0,
2389 ("bogus long slot station count %d", ic->ic_longslotsta));
2390 ic->ic_longslotsta--;
2391 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2392 "long slot time station leaves, count now %d",
2393 ic->ic_longslotsta);
2394 if (ic->ic_longslotsta == 0) {
2396 * Re-enable use of short slot time if supported
2397 * and not operating in IBSS mode (per spec).
2399 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2400 ic->ic_opmode != IEEE80211_M_IBSS) {
2401 IEEE80211_DPRINTF(ni->ni_vap,
2402 IEEE80211_MSG_ASSOC,
2403 "%s: re-enable use of short slot time\n",
2405 ieee80211_set_shortslottime(ic, 1);
2410 * If a non-ERP station do the protection-related bookkeeping.
2412 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2413 KASSERT(ic->ic_nonerpsta > 0,
2414 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2416 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2417 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2418 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2419 " (non-ERP sta present)" : "");
2420 if (ic->ic_nonerpsta == 0 &&
2421 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2422 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2423 "%s: disable use of protection\n", __func__);
2424 disable_protection(ic);
2430 * Time out presence of an overlapping bss with non-ERP
2431 * stations. When operating in hostap mode we listen for
2432 * beacons from other stations and if we identify a non-ERP
2433 * station is present we enable protection. To identify
2434 * when all non-ERP stations are gone we time out this
2438 ieee80211_erp_timeout(struct ieee80211com *ic)
2441 IEEE80211_LOCK_ASSERT(ic);
2443 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2444 time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2446 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2447 "%s", "age out non-ERP sta present on channel");
2449 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2450 if (ic->ic_nonerpsta == 0)
2451 disable_protection(ic);
2456 * Handle bookkeeping for station deauthentication/disassociation
2457 * when operating as an ap.
2460 ieee80211_node_leave(struct ieee80211_node *ni)
2462 struct ieee80211com *ic = ni->ni_ic;
2463 struct ieee80211vap *vap = ni->ni_vap;
2464 struct ieee80211_node_table *nt = ni->ni_table;
2466 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2467 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2469 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2470 ("unexpected operating mode %u", vap->iv_opmode));
2472 * If node wasn't previously associated all
2473 * we need to do is reclaim the reference.
2475 /* XXX ibss mode bypasses 11g and notification */
2476 if (ni->ni_associd == 0)
2479 * Tell the authenticator the station is leaving.
2480 * Note that we must do this before yanking the
2481 * association id as the authenticator uses the
2482 * associd to locate it's state block.
2484 if (vap->iv_auth->ia_node_leave != NULL)
2485 vap->iv_auth->ia_node_leave(ni);
2488 IEEE80211_AID_CLR(vap, ni->ni_associd);
2490 vap->iv_sta_assoc--;
2493 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2494 ieee80211_ht_node_leave(ni);
2495 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2496 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2497 ieee80211_node_leave_11g(ni);
2498 IEEE80211_UNLOCK(ic);
2500 * Cleanup station state. In particular clear various
2501 * state that might otherwise be reused if the node
2502 * is reused before the reference count goes to zero
2503 * (and memory is reclaimed).
2505 ieee80211_sta_leave(ni);
2508 * Remove the node from any table it's recorded in and
2509 * drop the caller's reference. Removal from the table
2510 * is important to insure the node is not reprocessed
2514 IEEE80211_NODE_LOCK(nt);
2515 node_reclaim(nt, ni);
2516 IEEE80211_NODE_UNLOCK(nt);
2518 ieee80211_free_node(ni);
2522 struct ieee80211vap *vap;
2524 uint32_t rssi_total;
2528 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2530 struct rssiinfo *info = arg;
2531 struct ieee80211vap *vap = ni->ni_vap;
2534 if (info->vap != vap)
2536 /* only associated stations */
2537 if (ni->ni_associd == 0)
2539 rssi = vap->iv_ic->ic_node_getrssi(ni);
2541 info->rssi_samples++;
2542 info->rssi_total += rssi;
2547 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2549 struct rssiinfo *info = arg;
2550 struct ieee80211vap *vap = ni->ni_vap;
2553 if (info->vap != vap)
2555 /* only neighbors */
2556 /* XXX check bssid */
2557 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2559 rssi = vap->iv_ic->ic_node_getrssi(ni);
2561 info->rssi_samples++;
2562 info->rssi_total += rssi;
2566 #ifdef IEEE80211_SUPPORT_MESH
2568 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
2570 struct rssiinfo *info = arg;
2571 struct ieee80211vap *vap = ni->ni_vap;
2574 if (info->vap != vap)
2576 /* only neighbors that peered successfully */
2577 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
2579 rssi = vap->iv_ic->ic_node_getrssi(ni);
2581 info->rssi_samples++;
2582 info->rssi_total += rssi;
2585 #endif /* IEEE80211_SUPPORT_MESH */
2588 ieee80211_getrssi(struct ieee80211vap *vap)
2590 #define NZ(x) ((x) == 0 ? 1 : (x))
2591 struct ieee80211com *ic = vap->iv_ic;
2592 struct rssiinfo info;
2594 info.rssi_total = 0;
2595 info.rssi_samples = 0;
2597 switch (vap->iv_opmode) {
2598 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
2599 case IEEE80211_M_AHDEMO: /* average of all neighbors */
2600 ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info);
2602 case IEEE80211_M_HOSTAP: /* average of all associated stations */
2603 ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info);
2605 #ifdef IEEE80211_SUPPORT_MESH
2606 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
2607 ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info);
2610 case IEEE80211_M_MONITOR: /* XXX */
2611 case IEEE80211_M_STA: /* use stats from associated ap */
2613 if (vap->iv_bss != NULL)
2614 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
2615 info.rssi_samples = 1;
2618 return info.rssi_total / NZ(info.rssi_samples);
2623 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
2626 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
2628 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
2629 /* for non-station mode return avg'd rssi accounting */
2630 if (vap->iv_opmode != IEEE80211_M_STA)
2631 *rssi = ieee80211_getrssi(vap);