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_var.h>
42 #include <net/if_media.h>
43 #include <net/ethernet.h>
45 #include <net80211/ieee80211_var.h>
46 #include <net80211/ieee80211_input.h>
47 #ifdef IEEE80211_SUPPORT_SUPERG
48 #include <net80211/ieee80211_superg.h>
50 #ifdef IEEE80211_SUPPORT_TDMA
51 #include <net80211/ieee80211_tdma.h>
53 #include <net80211/ieee80211_wds.h>
54 #include <net80211/ieee80211_mesh.h>
55 #include <net80211/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 node_reclaim(struct ieee80211_node_table *nt,
97 struct ieee80211_node *ni);
98 static void ieee80211_node_table_init(struct ieee80211com *ic,
99 struct ieee80211_node_table *nt, const char *name,
100 int inact, int keymaxix);
101 static void ieee80211_node_table_reset(struct ieee80211_node_table *,
102 struct ieee80211vap *);
103 static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
104 static void ieee80211_erp_timeout(struct ieee80211com *);
106 MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
107 MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
110 ieee80211_node_attach(struct ieee80211com *ic)
112 /* XXX really want maxlen enforced per-sta */
113 ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
115 ieee80211_node_table_init(ic, &ic->ic_sta, "station",
116 IEEE80211_INACT_INIT, ic->ic_max_keyix);
117 callout_init(&ic->ic_inact, 1);
118 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
119 ieee80211_node_timeout, ic);
121 ic->ic_node_alloc = node_alloc;
122 ic->ic_node_free = node_free;
123 ic->ic_node_cleanup = node_cleanup;
124 ic->ic_node_age = node_age;
125 ic->ic_node_drain = node_age; /* NB: same as age */
126 ic->ic_node_getrssi = node_getrssi;
127 ic->ic_node_getsignal = node_getsignal;
128 ic->ic_node_getmimoinfo = node_getmimoinfo;
131 * Set flags to be propagated to all vap's;
132 * these define default behaviour/configuration.
134 ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
138 ieee80211_node_detach(struct ieee80211com *ic)
141 callout_drain(&ic->ic_inact);
142 ieee80211_node_table_cleanup(&ic->ic_sta);
143 ieee80211_ageq_cleanup(&ic->ic_stageq);
147 ieee80211_node_vattach(struct ieee80211vap *vap)
149 /* NB: driver can override */
150 vap->iv_max_aid = IEEE80211_AID_DEF;
152 /* default station inactivity timer setings */
153 vap->iv_inact_init = IEEE80211_INACT_INIT;
154 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
155 vap->iv_inact_run = IEEE80211_INACT_RUN;
156 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
158 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
159 "%s: init %u auth %u run %u probe %u\n", __func__,
160 vap->iv_inact_init, vap->iv_inact_auth,
161 vap->iv_inact_run, vap->iv_inact_probe);
165 ieee80211_node_latevattach(struct ieee80211vap *vap)
167 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
168 /* XXX should we allow max aid to be zero? */
169 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
170 vap->iv_max_aid = IEEE80211_AID_MIN;
171 if_printf(vap->iv_ifp,
172 "WARNING: max aid too small, changed to %d\n",
175 vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC(
176 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
178 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
179 if (vap->iv_aid_bitmap == NULL) {
180 /* XXX no way to recover */
181 printf("%s: no memory for AID bitmap, max aid %d!\n",
182 __func__, vap->iv_max_aid);
187 ieee80211_reset_bss(vap);
189 vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
193 ieee80211_node_vdetach(struct ieee80211vap *vap)
195 struct ieee80211com *ic = vap->iv_ic;
197 ieee80211_node_table_reset(&ic->ic_sta, vap);
198 if (vap->iv_bss != NULL) {
199 ieee80211_free_node(vap->iv_bss);
202 if (vap->iv_aid_bitmap != NULL) {
203 IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE);
204 vap->iv_aid_bitmap = NULL;
209 * Port authorize/unauthorize interfaces for use by an authenticator.
213 ieee80211_node_authorize(struct ieee80211_node *ni)
215 struct ieee80211vap *vap = ni->ni_vap;
217 ni->ni_flags |= IEEE80211_NODE_AUTH;
218 ni->ni_inact_reload = vap->iv_inact_run;
219 ni->ni_inact = ni->ni_inact_reload;
221 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
222 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
226 ieee80211_node_unauthorize(struct ieee80211_node *ni)
228 struct ieee80211vap *vap = ni->ni_vap;
230 ni->ni_flags &= ~IEEE80211_NODE_AUTH;
231 ni->ni_inact_reload = vap->iv_inact_auth;
232 if (ni->ni_inact > ni->ni_inact_reload)
233 ni->ni_inact = ni->ni_inact_reload;
235 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
236 "%s: inact_reload %u inact %u", __func__,
237 ni->ni_inact_reload, ni->ni_inact);
241 * Fix tx parameters for a node according to ``association state''.
244 ieee80211_node_setuptxparms(struct ieee80211_node *ni)
246 struct ieee80211vap *vap = ni->ni_vap;
247 enum ieee80211_phymode mode;
249 if (ni->ni_flags & IEEE80211_NODE_HT) {
250 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
251 mode = IEEE80211_MODE_11NA;
253 mode = IEEE80211_MODE_11NG;
254 } else { /* legacy rate handling */
255 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
256 mode = IEEE80211_MODE_STURBO_A;
257 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
258 mode = IEEE80211_MODE_HALF;
259 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
260 mode = IEEE80211_MODE_QUARTER;
261 /* NB: 108A should be handled as 11a */
262 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
263 mode = IEEE80211_MODE_11A;
264 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
265 (ni->ni_flags & IEEE80211_NODE_ERP))
266 mode = IEEE80211_MODE_11G;
268 mode = IEEE80211_MODE_11B;
270 ni->ni_txparms = &vap->iv_txparms[mode];
274 * Set/change the channel. The rate set is also updated as
275 * to insure a consistent view by drivers.
276 * XXX should be private but hostap needs it to deal with CSA
279 ieee80211_node_set_chan(struct ieee80211_node *ni,
280 struct ieee80211_channel *chan)
282 struct ieee80211com *ic = ni->ni_ic;
283 struct ieee80211vap *vap = ni->ni_vap;
284 enum ieee80211_phymode mode;
286 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
289 mode = ieee80211_chan2mode(chan);
290 if (IEEE80211_IS_CHAN_HT(chan)) {
292 * We must 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 initial 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 printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
541 printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
543 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
544 printf(" %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 printf("%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 %s: %s preamble, %s slot time%s\n", __func__,
597 ether_sprintf(ni->ni_bssid),
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 ieee80211_update_chw(struct ieee80211com *ic)
696 ieee80211_setupcurchan(ic, ic->ic_curchan);
697 ieee80211_runtask(ic, &ic->ic_chw_task);
701 * Join the specified IBSS/BSS network. The node is assumed to
702 * be passed in with a held reference.
705 ieee80211_sta_join1(struct ieee80211_node *selbs)
707 struct ieee80211vap *vap = selbs->ni_vap;
708 struct ieee80211com *ic = selbs->ni_ic;
709 struct ieee80211_node *obss;
713 * Committed to selbs, setup state.
717 * Check if old+new node have the same address in which
718 * case we can reassociate when operating in sta mode.
720 canreassoc = (obss != NULL &&
721 vap->iv_state == IEEE80211_S_RUN &&
722 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
723 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
725 struct ieee80211_node_table *nt = obss->ni_table;
727 copy_bss(selbs, obss);
728 ieee80211_node_decref(obss); /* iv_bss reference */
730 IEEE80211_NODE_LOCK(nt);
731 node_reclaim(nt, obss); /* station table reference */
732 IEEE80211_NODE_UNLOCK(nt);
734 obss = NULL; /* NB: guard against later use */
738 * Delete unusable rates; we've already checked
739 * that the negotiated rate set is acceptable.
741 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
742 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
744 ieee80211_setcurchan(ic, selbs->ni_chan);
746 * Set the erp state (mostly the slot time) to deal with
747 * the auto-select case; this should be redundant if the
750 ieee80211_reset_erp(ic);
751 ieee80211_wme_initparams(vap);
753 if (vap->iv_opmode == IEEE80211_M_STA) {
756 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
759 * Act as if we received a DEAUTH frame in case we
760 * are invoked from the RUN state. This will cause
761 * us to try to re-authenticate if we are operating
764 ieee80211_new_state(vap, IEEE80211_S_AUTH,
765 IEEE80211_FC0_SUBTYPE_DEAUTH);
768 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
773 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
774 const struct ieee80211_scan_entry *se)
776 struct ieee80211com *ic = vap->iv_ic;
777 struct ieee80211_node *ni;
779 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
786 * Expand scan state into node's format.
787 * XXX may not need all this stuff
789 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
790 ni->ni_esslen = se->se_ssid[1];
791 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
792 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
793 ni->ni_intval = se->se_intval;
794 ni->ni_capinfo = se->se_capinfo;
796 ni->ni_timoff = se->se_timoff;
797 ni->ni_fhdwell = se->se_fhdwell;
798 ni->ni_fhindex = se->se_fhindex;
799 ni->ni_erp = se->se_erp;
800 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
801 ni->ni_noise = se->se_noise;
802 if (vap->iv_opmode == IEEE80211_M_STA) {
803 /* NB: only infrastructure mode requires an associd */
804 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
807 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
808 ieee80211_ies_expand(&ni->ni_ies);
809 #ifdef IEEE80211_SUPPORT_SUPERG
810 if (ni->ni_ies.ath_ie != NULL)
811 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
813 if (ni->ni_ies.htcap_ie != NULL)
814 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
815 if (ni->ni_ies.htinfo_ie != NULL)
816 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
817 #ifdef IEEE80211_SUPPORT_MESH
818 if (ni->ni_ies.meshid_ie != NULL)
819 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
821 #ifdef IEEE80211_SUPPORT_TDMA
822 if (ni->ni_ies.tdma_ie != NULL)
823 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
827 vap->iv_dtim_period = se->se_dtimperiod;
828 vap->iv_dtim_count = 0;
830 /* NB: must be after ni_chan is setup */
831 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
833 if (ieee80211_iserp_rateset(&ni->ni_rates))
834 ni->ni_flags |= IEEE80211_NODE_ERP;
837 * Setup HT state for this node if it's available, otherwise
838 * non-STA modes won't pick this state up.
840 * For IBSS and related modes that don't go through an
841 * association request/response, the only appropriate place
842 * to setup the HT state is here.
844 if (ni->ni_ies.htinfo_ie != NULL &&
845 ni->ni_ies.htcap_ie != NULL &&
846 vap->iv_flags_ht & IEEE80211_FHT_HT) {
847 ieee80211_ht_node_init(ni);
848 ieee80211_ht_updateparams(ni,
850 ni->ni_ies.htinfo_ie);
851 ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
852 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
853 ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
855 /* XXX else check for ath FF? */
856 /* XXX QoS? Difficult given that WME config is specific to a master */
858 ieee80211_node_setuptxparms(ni);
859 ieee80211_ratectl_node_init(ni);
861 return ieee80211_sta_join1(ieee80211_ref_node(ni));
865 * Leave the specified IBSS/BSS network. The node is assumed to
866 * be passed in with a held reference.
869 ieee80211_sta_leave(struct ieee80211_node *ni)
871 struct ieee80211com *ic = ni->ni_ic;
873 ic->ic_node_cleanup(ni);
874 ieee80211_notify_node_leave(ni);
878 * Send a deauthenticate frame and drop the station.
881 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
883 /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
884 ieee80211_ref_node(ni);
885 if (ni->ni_associd != 0)
886 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
887 ieee80211_node_leave(ni);
888 ieee80211_free_node(ni);
891 static struct ieee80211_node *
892 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
894 struct ieee80211_node *ni;
896 ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node),
897 M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
902 * Initialize an ie blob with the specified data. If previous
903 * data exists re-use the data block. As a side effect we clear
904 * all references to specific ie's; the caller is required to
908 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
910 /* NB: assumes data+len are the last fields */
911 memset(ies, 0, offsetof(struct ieee80211_ies, data));
912 if (ies->data != NULL && ies->len != len) {
913 /* data size changed */
914 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
917 if (ies->data == NULL) {
918 ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
919 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
920 if (ies->data == NULL) {
922 /* NB: pointers have already been zero'd above */
926 memcpy(ies->data, data, len);
932 * Reclaim storage for an ie blob.
935 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
937 if (ies->data != NULL)
938 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
942 * Expand an ie blob data contents and to fillin individual
943 * ie pointers. The data blob is assumed to be well-formed;
944 * we don't do any validity checking of ie lengths.
947 ieee80211_ies_expand(struct ieee80211_ies *ies)
956 case IEEE80211_ELEMID_VENDOR:
959 else if (iswmeoui(ie))
961 #ifdef IEEE80211_SUPPORT_SUPERG
962 else if (isatherosoui(ie))
965 #ifdef IEEE80211_SUPPORT_TDMA
966 else if (istdmaoui(ie))
970 case IEEE80211_ELEMID_RSN:
973 case IEEE80211_ELEMID_HTCAP:
976 case IEEE80211_ELEMID_HTINFO:
979 #ifdef IEEE80211_SUPPORT_MESH
980 case IEEE80211_ELEMID_MESHID:
991 * Reclaim any resources in a node and reset any critical
992 * state. Typically nodes are free'd immediately after,
993 * but in some cases the storage may be reused so we need
994 * to insure consistent state (should probably fix that).
997 node_cleanup(struct ieee80211_node *ni)
999 struct ieee80211vap *vap = ni->ni_vap;
1000 struct ieee80211com *ic = ni->ni_ic;
1003 /* NB: preserve ni_table */
1004 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
1005 if (vap->iv_opmode != IEEE80211_M_STA)
1007 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
1008 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
1009 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1012 * Cleanup any HT-related state.
1014 if (ni->ni_flags & IEEE80211_NODE_HT)
1015 ieee80211_ht_node_cleanup(ni);
1016 #ifdef IEEE80211_SUPPORT_SUPERG
1017 else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
1018 ieee80211_ff_node_cleanup(ni);
1020 #ifdef IEEE80211_SUPPORT_MESH
1022 * Cleanup any mesh-related state.
1024 if (vap->iv_opmode == IEEE80211_M_MBSS)
1025 ieee80211_mesh_node_cleanup(ni);
1028 * Clear any staging queue entries.
1030 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1033 * Clear AREF flag that marks the authorization refcnt bump
1034 * has happened. This is probably not needed as the node
1035 * should always be removed from the table so not found but
1036 * do it just in case.
1037 * Likewise clear the ASSOCID flag as these flags are intended
1038 * to be managed in tandem.
1040 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1043 * Drain power save queue and, if needed, clear TIM.
1045 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1046 vap->iv_set_tim(ni, 0);
1049 if (ni->ni_challenge != NULL) {
1050 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1051 ni->ni_challenge = NULL;
1054 * Preserve SSID, WPA, and WME ie's so the bss node is
1055 * reusable during a re-auth/re-assoc state transition.
1056 * If we remove these data they will not be recreated
1057 * because they come from a probe-response or beacon frame
1058 * which cannot be expected prior to the association-response.
1059 * This should not be an issue when operating in other modes
1060 * as stations leaving always go through a full state transition
1061 * which will rebuild this state.
1063 * XXX does this leave us open to inheriting old state?
1065 for (i = 0; i < nitems(ni->ni_rxfrag); i++)
1066 if (ni->ni_rxfrag[i] != NULL) {
1067 m_freem(ni->ni_rxfrag[i]);
1068 ni->ni_rxfrag[i] = NULL;
1071 * Must be careful here to remove any key map entry w/o a LOR.
1073 ieee80211_node_delucastkey(ni);
1077 node_free(struct ieee80211_node *ni)
1079 struct ieee80211com *ic = ni->ni_ic;
1081 ieee80211_ratectl_node_deinit(ni);
1082 ic->ic_node_cleanup(ni);
1083 ieee80211_ies_cleanup(&ni->ni_ies);
1084 ieee80211_psq_cleanup(&ni->ni_psq);
1085 IEEE80211_FREE(ni, M_80211_NODE);
1089 node_age(struct ieee80211_node *ni)
1091 struct ieee80211vap *vap = ni->ni_vap;
1093 IEEE80211_NODE_LOCK_ASSERT(&vap->iv_ic->ic_sta);
1096 * Age frames on the power save queue.
1098 if (ieee80211_node_psq_age(ni) != 0 &&
1099 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1100 vap->iv_set_tim(ni, 0);
1102 * Age out HT resources (e.g. frames on the
1103 * A-MPDU reorder queues).
1105 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1106 ieee80211_ht_node_age(ni);
1110 node_getrssi(const struct ieee80211_node *ni)
1112 uint32_t avgrssi = ni->ni_avgrssi;
1115 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1117 rssi = IEEE80211_RSSI_GET(avgrssi);
1118 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1122 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1124 *rssi = node_getrssi(ni);
1125 *noise = ni->ni_noise;
1129 node_getmimoinfo(const struct ieee80211_node *ni,
1130 struct ieee80211_mimo_info *info)
1136 bzero(info, sizeof(*info));
1138 for (i = 0; i < ni->ni_mimo_chains; i++) {
1139 avgrssi = ni->ni_mimo_rssi_ctl[i];
1140 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1143 rssi = IEEE80211_RSSI_GET(avgrssi);
1144 info->rssi[i] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1146 info->noise[i] = ni->ni_mimo_noise_ctl[i];
1149 /* XXX ext radios? */
1154 struct ieee80211_node *
1155 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1156 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1158 struct ieee80211com *ic = nt->nt_ic;
1159 struct ieee80211_node *ni;
1162 ni = ic->ic_node_alloc(vap, macaddr);
1164 vap->iv_stats.is_rx_nodealloc++;
1168 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1169 "%s %p<%s> in %s table\n", __func__, ni,
1170 ether_sprintf(macaddr), nt->nt_name);
1172 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1173 hash = IEEE80211_NODE_HASH(ic, macaddr);
1174 ieee80211_node_initref(ni); /* mark referenced */
1175 ni->ni_chan = IEEE80211_CHAN_ANYC;
1176 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1177 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1178 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1179 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1180 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1181 ni->ni_inact_reload = nt->nt_inact_init;
1182 ni->ni_inact = ni->ni_inact_reload;
1183 ni->ni_ath_defkeyix = 0x7fff;
1184 ieee80211_psq_init(&ni->ni_psq, "unknown");
1185 #ifdef IEEE80211_SUPPORT_MESH
1186 if (vap->iv_opmode == IEEE80211_M_MBSS)
1187 ieee80211_mesh_node_init(vap, ni);
1189 IEEE80211_NODE_LOCK(nt);
1190 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1191 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1195 IEEE80211_NODE_UNLOCK(nt);
1197 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1198 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1200 ieee80211_ratectl_node_init(ni);
1206 * Craft a temporary node suitable for sending a management frame
1207 * to the specified station. We craft only as much state as we
1208 * need to do the work since the node will be immediately reclaimed
1209 * once the send completes.
1211 struct ieee80211_node *
1212 ieee80211_tmp_node(struct ieee80211vap *vap,
1213 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1215 struct ieee80211com *ic = vap->iv_ic;
1216 struct ieee80211_node *ni;
1218 ni = ic->ic_node_alloc(vap, macaddr);
1220 struct ieee80211_node *bss = vap->iv_bss;
1222 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1223 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1225 ni->ni_table = NULL; /* NB: pedantic */
1226 ni->ni_ic = ic; /* NB: needed to set channel */
1229 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1230 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1231 ieee80211_node_initref(ni); /* mark referenced */
1232 /* NB: required by ieee80211_fix_rate */
1233 ieee80211_node_set_chan(ni, bss->ni_chan);
1234 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1235 IEEE80211_KEYIX_NONE);
1236 ni->ni_txpower = bss->ni_txpower;
1237 /* XXX optimize away */
1238 ieee80211_psq_init(&ni->ni_psq, "unknown");
1240 ieee80211_ratectl_node_init(ni);
1243 vap->iv_stats.is_rx_nodealloc++;
1248 struct ieee80211_node *
1249 ieee80211_dup_bss(struct ieee80211vap *vap,
1250 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1252 struct ieee80211com *ic = vap->iv_ic;
1253 struct ieee80211_node *ni;
1255 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1257 struct ieee80211_node *bss = vap->iv_bss;
1259 * Inherit from iv_bss.
1262 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1263 ieee80211_node_set_chan(ni, bss->ni_chan);
1269 * Create a bss node for a legacy WDS vap. The far end does
1270 * not associate so we just create create a new node and
1271 * simulate an association. The caller is responsible for
1272 * installing the node as the bss node and handling any further
1273 * setup work like authorizing the port.
1275 struct ieee80211_node *
1276 ieee80211_node_create_wds(struct ieee80211vap *vap,
1277 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1279 struct ieee80211com *ic = vap->iv_ic;
1280 struct ieee80211_node *ni;
1282 /* XXX check if node already in sta table? */
1283 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1285 ni->ni_wdsvap = vap;
1286 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1288 * Inherit any manually configured settings.
1290 copy_bss(ni, vap->iv_bss);
1291 ieee80211_node_set_chan(ni, chan);
1292 /* NB: propagate ssid so available to WPA supplicant */
1293 ni->ni_esslen = vap->iv_des_ssid[0].len;
1294 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1295 /* NB: no associd for peer */
1297 * There are no management frames to use to
1298 * discover neighbor capabilities, so blindly
1299 * propagate the local configuration.
1301 if (vap->iv_flags & IEEE80211_F_WME)
1302 ni->ni_flags |= IEEE80211_NODE_QOS;
1303 #ifdef IEEE80211_SUPPORT_SUPERG
1304 if (vap->iv_flags & IEEE80211_F_FF)
1305 ni->ni_flags |= IEEE80211_NODE_FF;
1307 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1308 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1310 * Device is HT-capable and HT is enabled for
1311 * the vap; setup HT operation. On return
1312 * ni_chan will be adjusted to an HT channel.
1314 ieee80211_ht_wds_init(ni);
1316 struct ieee80211_channel *c = ni->ni_chan;
1318 * Force a legacy channel to be used.
1320 c = ieee80211_find_channel(ic,
1321 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1322 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1323 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1330 struct ieee80211_node *
1331 #ifdef IEEE80211_DEBUG_REFCNT
1332 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1333 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1335 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1336 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1339 struct ieee80211_node *ni;
1342 IEEE80211_NODE_LOCK_ASSERT(nt);
1344 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1345 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1346 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1347 ieee80211_ref_node(ni); /* mark referenced */
1348 #ifdef IEEE80211_DEBUG_REFCNT
1349 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1350 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1352 ni, ether_sprintf(ni->ni_macaddr),
1353 ieee80211_node_refcnt(ni));
1361 struct ieee80211_node *
1362 #ifdef IEEE80211_DEBUG_REFCNT
1363 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1364 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1366 ieee80211_find_node(struct ieee80211_node_table *nt,
1367 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1370 struct ieee80211_node *ni;
1372 IEEE80211_NODE_LOCK(nt);
1373 ni = ieee80211_find_node_locked(nt, macaddr);
1374 IEEE80211_NODE_UNLOCK(nt);
1378 struct ieee80211_node *
1379 #ifdef IEEE80211_DEBUG_REFCNT
1380 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1381 const struct ieee80211vap *vap,
1382 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1384 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1385 const struct ieee80211vap *vap,
1386 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1389 struct ieee80211_node *ni;
1392 IEEE80211_NODE_LOCK_ASSERT(nt);
1394 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1395 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1396 if (ni->ni_vap == vap &&
1397 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1398 ieee80211_ref_node(ni); /* mark referenced */
1399 #ifdef IEEE80211_DEBUG_REFCNT
1400 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1401 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1403 ni, ether_sprintf(ni->ni_macaddr),
1404 ieee80211_node_refcnt(ni));
1412 struct ieee80211_node *
1413 #ifdef IEEE80211_DEBUG_REFCNT
1414 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1415 const struct ieee80211vap *vap,
1416 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1418 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1419 const struct ieee80211vap *vap,
1420 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1423 struct ieee80211_node *ni;
1425 IEEE80211_NODE_LOCK(nt);
1426 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1427 IEEE80211_NODE_UNLOCK(nt);
1432 * Fake up a node; this handles node discovery in adhoc mode.
1433 * Note that for the driver's benefit we we treat this like
1434 * an association so the driver has an opportunity to setup
1435 * it's private state.
1437 struct ieee80211_node *
1438 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1439 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1441 struct ieee80211_node *ni;
1443 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1444 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1445 ni = ieee80211_dup_bss(vap, macaddr);
1447 struct ieee80211com *ic = vap->iv_ic;
1449 /* XXX no rate negotiation; just dup */
1450 ni->ni_rates = vap->iv_bss->ni_rates;
1451 if (ieee80211_iserp_rateset(&ni->ni_rates))
1452 ni->ni_flags |= IEEE80211_NODE_ERP;
1453 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1455 * In adhoc demo mode there are no management
1456 * frames to use to discover neighbor capabilities,
1457 * so blindly propagate the local configuration
1458 * so we can do interesting things (e.g. use
1459 * WME to disable ACK's).
1461 if (vap->iv_flags & IEEE80211_F_WME)
1462 ni->ni_flags |= IEEE80211_NODE_QOS;
1463 #ifdef IEEE80211_SUPPORT_SUPERG
1464 if (vap->iv_flags & IEEE80211_F_FF)
1465 ni->ni_flags |= IEEE80211_NODE_FF;
1468 ieee80211_node_setuptxparms(ni);
1469 ieee80211_ratectl_node_init(ni);
1470 if (ic->ic_newassoc != NULL)
1471 ic->ic_newassoc(ni, 1);
1472 /* XXX not right for 802.1x/WPA */
1473 ieee80211_node_authorize(ni);
1479 ieee80211_init_neighbor(struct ieee80211_node *ni,
1480 const struct ieee80211_frame *wh,
1481 const struct ieee80211_scanparams *sp)
1483 int do_ht_setup = 0;
1485 ni->ni_esslen = sp->ssid[1];
1486 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1487 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1488 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1489 ni->ni_intval = sp->bintval;
1490 ni->ni_capinfo = sp->capinfo;
1491 ni->ni_chan = ni->ni_ic->ic_curchan;
1492 ni->ni_fhdwell = sp->fhdwell;
1493 ni->ni_fhindex = sp->fhindex;
1494 ni->ni_erp = sp->erp;
1495 ni->ni_timoff = sp->timoff;
1496 #ifdef IEEE80211_SUPPORT_MESH
1497 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1498 ieee80211_mesh_init_neighbor(ni, wh, sp);
1500 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1501 ieee80211_ies_expand(&ni->ni_ies);
1502 if (ni->ni_ies.wme_ie != NULL)
1503 ni->ni_flags |= IEEE80211_NODE_QOS;
1505 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1506 #ifdef IEEE80211_SUPPORT_SUPERG
1507 if (ni->ni_ies.ath_ie != NULL)
1508 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1510 if (ni->ni_ies.htcap_ie != NULL)
1511 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1512 if (ni->ni_ies.htinfo_ie != NULL)
1513 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1515 if ((ni->ni_ies.htcap_ie != NULL) &&
1516 (ni->ni_ies.htinfo_ie != NULL) &&
1517 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1522 /* NB: must be after ni_chan is setup */
1523 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1524 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1525 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1528 * If the neighbor is HT compatible, flip that on.
1531 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1532 "%s: doing HT setup\n", __func__);
1533 ieee80211_ht_node_init(ni);
1534 ieee80211_ht_updateparams(ni,
1535 ni->ni_ies.htcap_ie,
1536 ni->ni_ies.htinfo_ie);
1537 ieee80211_setup_htrates(ni,
1538 ni->ni_ies.htcap_ie,
1539 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1540 ieee80211_setup_basic_htrates(ni,
1541 ni->ni_ies.htinfo_ie);
1542 ieee80211_node_setuptxparms(ni);
1543 ieee80211_ratectl_node_init(ni);
1548 * Do node discovery in adhoc mode on receipt of a beacon
1549 * or probe response frame. Note that for the driver's
1550 * benefit we we treat this like an association so the
1551 * driver has an opportunity to setup it's private state.
1553 struct ieee80211_node *
1554 ieee80211_add_neighbor(struct ieee80211vap *vap,
1555 const struct ieee80211_frame *wh,
1556 const struct ieee80211_scanparams *sp)
1558 struct ieee80211_node *ni;
1560 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1561 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1562 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1564 struct ieee80211com *ic = vap->iv_ic;
1566 ieee80211_init_neighbor(ni, wh, sp);
1567 if (ieee80211_iserp_rateset(&ni->ni_rates))
1568 ni->ni_flags |= IEEE80211_NODE_ERP;
1569 ieee80211_node_setuptxparms(ni);
1570 ieee80211_ratectl_node_init(ni);
1571 if (ic->ic_newassoc != NULL)
1572 ic->ic_newassoc(ni, 1);
1573 /* XXX not right for 802.1x/WPA */
1574 ieee80211_node_authorize(ni);
1579 #define IS_PROBEREQ(wh) \
1580 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1581 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1582 #define IS_BCAST_PROBEREQ(wh) \
1583 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1584 ((const struct ieee80211_frame *)(wh))->i_addr3))
1586 static __inline struct ieee80211_node *
1587 _find_rxnode(struct ieee80211_node_table *nt,
1588 const struct ieee80211_frame_min *wh)
1590 if (IS_BCAST_PROBEREQ(wh))
1591 return NULL; /* spam bcast probe req to all vap's */
1592 return ieee80211_find_node_locked(nt, wh->i_addr2);
1596 * Locate the node for sender, track state, and then pass the
1597 * (referenced) node up to the 802.11 layer for its use. Note
1598 * we can return NULL if the sender is not in the table.
1600 struct ieee80211_node *
1601 #ifdef IEEE80211_DEBUG_REFCNT
1602 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1603 const struct ieee80211_frame_min *wh, const char *func, int line)
1605 ieee80211_find_rxnode(struct ieee80211com *ic,
1606 const struct ieee80211_frame_min *wh)
1609 struct ieee80211_node_table *nt;
1610 struct ieee80211_node *ni;
1613 IEEE80211_NODE_LOCK(nt);
1614 ni = _find_rxnode(nt, wh);
1615 IEEE80211_NODE_UNLOCK(nt);
1621 * Like ieee80211_find_rxnode but use the supplied h/w
1622 * key index as a hint to locate the node in the key
1623 * mapping table. If an entry is present at the key
1624 * index we return it; otherwise do a normal lookup and
1625 * update the mapping table if the station has a unicast
1626 * key assigned to it.
1628 struct ieee80211_node *
1629 #ifdef IEEE80211_DEBUG_REFCNT
1630 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1631 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1632 const char *func, int line)
1634 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1635 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1638 struct ieee80211_node_table *nt;
1639 struct ieee80211_node *ni;
1642 IEEE80211_NODE_LOCK(nt);
1643 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1644 ni = nt->nt_keyixmap[keyix];
1648 ni = _find_rxnode(nt, wh);
1649 if (ni != NULL && nt->nt_keyixmap != NULL) {
1651 * If the station has a unicast key cache slot
1652 * assigned update the key->node mapping table.
1654 keyix = ni->ni_ucastkey.wk_rxkeyix;
1655 /* XXX can keyixmap[keyix] != NULL? */
1656 if (keyix < nt->nt_keyixmax &&
1657 nt->nt_keyixmap[keyix] == NULL) {
1658 IEEE80211_DPRINTF(ni->ni_vap,
1660 "%s: add key map entry %p<%s> refcnt %d\n",
1661 __func__, ni, ether_sprintf(ni->ni_macaddr),
1662 ieee80211_node_refcnt(ni)+1);
1663 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1667 if (IS_BCAST_PROBEREQ(wh))
1668 ni = NULL; /* spam bcast probe req to all vap's */
1670 ieee80211_ref_node(ni);
1672 IEEE80211_NODE_UNLOCK(nt);
1676 #undef IS_BCAST_PROBEREQ
1680 * Return a reference to the appropriate node for sending
1681 * a data frame. This handles node discovery in adhoc networks.
1683 struct ieee80211_node *
1684 #ifdef IEEE80211_DEBUG_REFCNT
1685 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1686 const uint8_t macaddr[IEEE80211_ADDR_LEN],
1687 const char *func, int line)
1689 ieee80211_find_txnode(struct ieee80211vap *vap,
1690 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1693 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
1694 struct ieee80211_node *ni;
1697 * The destination address should be in the node table
1698 * unless this is a multicast/broadcast frame. We can
1699 * also optimize station mode operation, all frames go
1702 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
1703 IEEE80211_NODE_LOCK(nt);
1704 if (vap->iv_opmode == IEEE80211_M_STA ||
1705 vap->iv_opmode == IEEE80211_M_WDS ||
1706 IEEE80211_IS_MULTICAST(macaddr))
1707 ni = ieee80211_ref_node(vap->iv_bss);
1709 ni = ieee80211_find_node_locked(nt, macaddr);
1710 IEEE80211_NODE_UNLOCK(nt);
1713 if (vap->iv_opmode == IEEE80211_M_IBSS ||
1714 vap->iv_opmode == IEEE80211_M_AHDEMO) {
1716 * In adhoc mode cons up a node for the destination.
1717 * Note that we need an additional reference for the
1718 * caller to be consistent with
1719 * ieee80211_find_node_locked.
1721 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
1723 (void) ieee80211_ref_node(ni);
1725 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
1726 "no node, discard frame (%s)", __func__);
1727 vap->iv_stats.is_tx_nonode++;
1734 _ieee80211_free_node(struct ieee80211_node *ni)
1736 struct ieee80211_node_table *nt = ni->ni_table;
1739 * NB: careful about referencing the vap as it may be
1740 * gone if the last reference was held by a driver.
1741 * We know the com will always be present so it's safe
1742 * to use ni_ic below to reclaim resources.
1745 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1746 "%s %p<%s> in %s table\n", __func__, ni,
1747 ether_sprintf(ni->ni_macaddr),
1748 nt != NULL ? nt->nt_name : "<gone>");
1750 if (ni->ni_associd != 0) {
1751 struct ieee80211vap *vap = ni->ni_vap;
1752 if (vap->iv_aid_bitmap != NULL)
1753 IEEE80211_AID_CLR(vap, ni->ni_associd);
1756 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1757 LIST_REMOVE(ni, ni_hash);
1759 ni->ni_ic->ic_node_free(ni);
1763 * Clear any entry in the unicast key mapping table.
1766 node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1768 ieee80211_keyix keyix;
1770 keyix = ni->ni_ucastkey.wk_rxkeyix;
1771 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
1772 nt->nt_keyixmap[keyix] == ni) {
1773 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1774 "%s: %p<%s> clear key map entry %u\n",
1775 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
1776 nt->nt_keyixmap[keyix] = NULL;
1777 ieee80211_node_decref(ni);
1785 #ifdef IEEE80211_DEBUG_REFCNT
1786 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
1788 ieee80211_free_node(struct ieee80211_node *ni)
1791 struct ieee80211_node_table *nt = ni->ni_table;
1793 #ifdef IEEE80211_DEBUG_REFCNT
1794 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1795 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
1796 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
1799 IEEE80211_NODE_LOCK(nt);
1800 if (ieee80211_node_dectestref(ni)) {
1802 * Last reference, reclaim state.
1804 _ieee80211_free_node(ni);
1805 } else if (ieee80211_node_refcnt(ni) == 1)
1806 if (node_clear_keyixmap(nt, ni))
1807 _ieee80211_free_node(ni);
1808 IEEE80211_NODE_UNLOCK(nt);
1810 if (ieee80211_node_dectestref(ni))
1811 _ieee80211_free_node(ni);
1816 * Reclaim a unicast key and clear any key cache state.
1819 ieee80211_node_delucastkey(struct ieee80211_node *ni)
1821 struct ieee80211com *ic = ni->ni_ic;
1822 struct ieee80211_node_table *nt = &ic->ic_sta;
1823 struct ieee80211_node *nikey;
1824 ieee80211_keyix keyix;
1825 int isowned, status;
1828 * NB: We must beware of LOR here; deleting the key
1829 * can cause the crypto layer to block traffic updates
1830 * which can generate a LOR against the node table lock;
1831 * grab it here and stash the key index for our use below.
1833 * Must also beware of recursion on the node table lock.
1834 * When called from node_cleanup we may already have
1835 * the node table lock held. Unfortunately there's no
1836 * way to separate out this path so we must do this
1839 isowned = IEEE80211_NODE_IS_LOCKED(nt);
1841 IEEE80211_NODE_LOCK(nt);
1843 status = 1; /* NB: success */
1844 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
1845 keyix = ni->ni_ucastkey.wk_rxkeyix;
1846 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
1847 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
1848 nikey = nt->nt_keyixmap[keyix];
1849 nt->nt_keyixmap[keyix] = NULL;
1853 IEEE80211_NODE_UNLOCK(nt);
1855 if (nikey != NULL) {
1856 KASSERT(nikey == ni,
1857 ("key map out of sync, ni %p nikey %p", ni, nikey));
1858 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1859 "%s: delete key map entry %p<%s> refcnt %d\n",
1860 __func__, ni, ether_sprintf(ni->ni_macaddr),
1861 ieee80211_node_refcnt(ni)-1);
1862 ieee80211_free_node(ni);
1868 * Reclaim a node. If this is the last reference count then
1869 * do the normal free work. Otherwise remove it from the node
1870 * table and mark it gone by clearing the back-reference.
1873 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
1876 IEEE80211_NODE_LOCK_ASSERT(nt);
1878 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1879 "%s: remove %p<%s> from %s table, refcnt %d\n",
1880 __func__, ni, ether_sprintf(ni->ni_macaddr),
1881 nt->nt_name, ieee80211_node_refcnt(ni)-1);
1883 * Clear any entry in the unicast key mapping table.
1884 * We need to do it here so rx lookups don't find it
1885 * in the mapping table even if it's not in the hash
1886 * table. We cannot depend on the mapping table entry
1887 * being cleared because the node may not be free'd.
1889 (void)node_clear_keyixmap(nt, ni);
1890 if (!ieee80211_node_dectestref(ni)) {
1892 * Other references are present, just remove the
1893 * node from the table so it cannot be found. When
1894 * the references are dropped storage will be
1897 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1898 LIST_REMOVE(ni, ni_hash);
1899 ni->ni_table = NULL; /* clear reference */
1901 _ieee80211_free_node(ni);
1905 * Node table support.
1909 ieee80211_node_table_init(struct ieee80211com *ic,
1910 struct ieee80211_node_table *nt,
1911 const char *name, int inact, int keyixmax)
1915 IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
1916 IEEE80211_NODE_ITERATE_LOCK_INIT(nt, ic->ic_name);
1917 TAILQ_INIT(&nt->nt_node);
1920 nt->nt_inact_init = inact;
1921 nt->nt_keyixmax = keyixmax;
1922 if (nt->nt_keyixmax > 0) {
1923 nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
1924 keyixmax * sizeof(struct ieee80211_node *),
1926 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1927 if (nt->nt_keyixmap == NULL)
1929 "Cannot allocate key index map with %u entries\n",
1932 nt->nt_keyixmap = NULL;
1936 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
1937 struct ieee80211vap *match)
1939 struct ieee80211_node *ni, *next;
1941 IEEE80211_NODE_LOCK(nt);
1942 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
1943 if (match != NULL && ni->ni_vap != match)
1945 /* XXX can this happen? if so need's work */
1946 if (ni->ni_associd != 0) {
1947 struct ieee80211vap *vap = ni->ni_vap;
1949 if (vap->iv_auth->ia_node_leave != NULL)
1950 vap->iv_auth->ia_node_leave(ni);
1951 if (vap->iv_aid_bitmap != NULL)
1952 IEEE80211_AID_CLR(vap, ni->ni_associd);
1954 ni->ni_wdsvap = NULL; /* clear reference */
1955 node_reclaim(nt, ni);
1957 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
1959 * Make a separate pass to clear references to this vap
1960 * held by DWDS entries. They will not be matched above
1961 * because ni_vap will point to the ap vap but we still
1962 * need to clear ni_wdsvap when the WDS vap is destroyed
1965 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
1966 if (ni->ni_wdsvap == match)
1967 ni->ni_wdsvap = NULL;
1969 IEEE80211_NODE_UNLOCK(nt);
1973 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
1975 ieee80211_node_table_reset(nt, NULL);
1976 if (nt->nt_keyixmap != NULL) {
1978 /* XXX verify all entries are NULL */
1980 for (i = 0; i < nt->nt_keyixmax; i++)
1981 if (nt->nt_keyixmap[i] != NULL)
1982 printf("%s: %s[%u] still active\n", __func__,
1985 IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
1986 nt->nt_keyixmap = NULL;
1988 IEEE80211_NODE_ITERATE_LOCK_DESTROY(nt);
1989 IEEE80211_NODE_LOCK_DESTROY(nt);
1993 * Timeout inactive stations and do related housekeeping.
1994 * Note that we cannot hold the node lock while sending a
1995 * frame as this would lead to a LOR. Instead we use a
1996 * generation number to mark nodes that we've scanned and
1997 * drop the lock and restart a scan if we have to time out
1998 * a node. Since we are single-threaded by virtue of
1999 * controlling the inactivity timer we can be sure this will
2000 * process each node only once.
2003 ieee80211_timeout_stations(struct ieee80211com *ic)
2005 struct ieee80211_node_table *nt = &ic->ic_sta;
2006 struct ieee80211vap *vap;
2007 struct ieee80211_node *ni;
2010 IEEE80211_NODE_ITERATE_LOCK(nt);
2011 gen = ++nt->nt_scangen;
2013 IEEE80211_NODE_LOCK(nt);
2014 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2015 if (ni->ni_scangen == gen) /* previously handled */
2017 ni->ni_scangen = gen;
2019 * Ignore entries for which have yet to receive an
2020 * authentication frame. These are transient and
2021 * will be reclaimed when the last reference to them
2022 * goes away (when frame xmits complete).
2026 * Only process stations when in RUN state. This
2027 * insures, for example, that we don't timeout an
2028 * inactive station during CAC. Note that CSA state
2029 * is actually handled in ieee80211_node_timeout as
2030 * it applies to more than timeout processing.
2032 if (vap->iv_state != IEEE80211_S_RUN)
2034 /* XXX can vap be NULL? */
2035 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2036 vap->iv_opmode == IEEE80211_M_STA) &&
2037 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2040 * Free fragment if not needed anymore
2041 * (last fragment older than 1s).
2042 * XXX doesn't belong here, move to node_age
2044 if (ni->ni_rxfrag[0] != NULL &&
2045 ticks > ni->ni_rxfragstamp + hz) {
2046 m_freem(ni->ni_rxfrag[0]);
2047 ni->ni_rxfrag[0] = NULL;
2049 if (ni->ni_inact > 0) {
2051 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2052 "%s: inact %u inact_reload %u nrates %u",
2053 __func__, ni->ni_inact, ni->ni_inact_reload,
2054 ni->ni_rates.rs_nrates);
2057 * Special case ourself; we may be idle for extended periods
2058 * of time and regardless reclaiming our state is wrong.
2059 * XXX run ic_node_age
2061 if (ni == vap->iv_bss)
2063 if (ni->ni_associd != 0 ||
2064 (vap->iv_opmode == IEEE80211_M_IBSS ||
2065 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2067 * Age/drain resources held by the station.
2069 ic->ic_node_age(ni);
2071 * Probe the station before time it out. We
2072 * send a null data frame which may not be
2073 * universally supported by drivers (need it
2074 * for ps-poll support so it should be...).
2076 * XXX don't probe the station unless we've
2077 * received a frame from them (and have
2078 * some idea of the rates they are capable
2079 * of); this will get fixed more properly
2080 * soon with better handling of the rate set.
2082 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2083 (0 < ni->ni_inact &&
2084 ni->ni_inact <= vap->iv_inact_probe) &&
2085 ni->ni_rates.rs_nrates != 0) {
2087 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2089 "probe station due to inactivity");
2091 * Grab a reference before unlocking the table
2092 * so the node cannot be reclaimed before we
2093 * send the frame. ieee80211_send_nulldata
2094 * understands we've done this and reclaims the
2095 * ref for us as needed.
2097 ieee80211_ref_node(ni);
2098 IEEE80211_NODE_UNLOCK(nt);
2099 ieee80211_send_nulldata(ni);
2104 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2105 ni->ni_inact <= 0) {
2107 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2108 "station timed out due to inactivity "
2109 "(refcnt %u)", ieee80211_node_refcnt(ni));
2111 * Send a deauthenticate frame and drop the station.
2112 * This is somewhat complicated due to reference counts
2113 * and locking. At this point a station will typically
2114 * have a reference count of 1. ieee80211_node_leave
2115 * will do a "free" of the node which will drop the
2116 * reference count. But in the meantime a reference
2117 * wil be held by the deauth frame. The actual reclaim
2118 * of the node will happen either after the tx is
2119 * completed or by ieee80211_node_leave.
2121 * Separately we must drop the node lock before sending
2122 * in case the driver takes a lock, as this can result
2123 * in a LOR between the node lock and the driver lock.
2125 ieee80211_ref_node(ni);
2126 IEEE80211_NODE_UNLOCK(nt);
2127 if (ni->ni_associd != 0) {
2128 IEEE80211_SEND_MGMT(ni,
2129 IEEE80211_FC0_SUBTYPE_DEAUTH,
2130 IEEE80211_REASON_AUTH_EXPIRE);
2132 ieee80211_node_leave(ni);
2133 ieee80211_free_node(ni);
2134 vap->iv_stats.is_node_timeout++;
2138 IEEE80211_NODE_UNLOCK(nt);
2140 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2144 * Aggressively reclaim resources. This should be used
2145 * only in a critical situation to reclaim mbuf resources.
2148 ieee80211_drain(struct ieee80211com *ic)
2150 struct ieee80211_node_table *nt = &ic->ic_sta;
2151 struct ieee80211vap *vap;
2152 struct ieee80211_node *ni;
2154 IEEE80211_NODE_LOCK(nt);
2155 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2157 * Ignore entries for which have yet to receive an
2158 * authentication frame. These are transient and
2159 * will be reclaimed when the last reference to them
2160 * goes away (when frame xmits complete).
2164 * Only process stations when in RUN state. This
2165 * insures, for example, that we don't timeout an
2166 * inactive station during CAC. Note that CSA state
2167 * is actually handled in ieee80211_node_timeout as
2168 * it applies to more than timeout processing.
2170 if (vap->iv_state != IEEE80211_S_RUN)
2172 /* XXX can vap be NULL? */
2173 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2174 vap->iv_opmode == IEEE80211_M_STA) &&
2175 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2179 * XXX doesn't belong here, move to node_drain
2181 if (ni->ni_rxfrag[0] != NULL) {
2182 m_freem(ni->ni_rxfrag[0]);
2183 ni->ni_rxfrag[0] = NULL;
2186 * Drain resources held by the station.
2188 ic->ic_node_drain(ni);
2190 IEEE80211_NODE_UNLOCK(nt);
2194 * Per-ieee80211com inactivity timer callback.
2197 ieee80211_node_timeout(void *arg)
2199 struct ieee80211com *ic = arg;
2202 * Defer timeout processing if a channel switch is pending.
2203 * We typically need to be mute so not doing things that
2204 * might generate frames is good to handle in one place.
2205 * Supressing the station timeout processing may extend the
2206 * lifetime of inactive stations (by not decrementing their
2207 * idle counters) but this should be ok unless the CSA is
2208 * active for an unusually long time.
2210 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2211 ieee80211_scan_timeout(ic);
2212 ieee80211_timeout_stations(ic);
2213 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2216 ieee80211_erp_timeout(ic);
2217 ieee80211_ht_timeout(ic);
2218 IEEE80211_UNLOCK(ic);
2220 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2221 ieee80211_node_timeout, ic);
2225 * Iterate over the node table and return an array of ref'ed nodes.
2227 * This is separated out from calling the actual node function so that
2228 * no LORs will occur.
2230 * If there are too many nodes (ie, the number of nodes doesn't fit
2231 * within 'max_aid' entries) then the node references will be freed
2232 * and an error will be returned.
2234 * The responsibility of allocating and freeing "ni_arr" is up to
2238 ieee80211_iterate_nt(struct ieee80211_node_table *nt,
2239 struct ieee80211_node **ni_arr, uint16_t max_aid)
2243 struct ieee80211_node *ni;
2245 IEEE80211_NODE_ITERATE_LOCK(nt);
2246 IEEE80211_NODE_LOCK(nt);
2248 gen = ++nt->nt_scangen;
2252 * We simply assume here that since the node
2253 * scan generation doesn't change (as
2254 * we are holding both the node table and
2255 * node table iteration locks), we can simply
2256 * assign it to the node here.
2258 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2261 ic_printf(nt->nt_ic, "Node array overflow: max=%u",
2265 ni_arr[i] = ieee80211_ref_node(ni);
2266 ni_arr[i]->ni_scangen = gen;
2271 * It's safe to unlock here.
2273 * If we're successful, the list is returned.
2274 * If we're unsuccessful, the list is ignored
2275 * and we remove our references.
2277 * This avoids any potential LOR with
2278 * ieee80211_free_node().
2280 IEEE80211_NODE_UNLOCK(nt);
2281 IEEE80211_NODE_ITERATE_UNLOCK(nt);
2284 * If ret is non-zero, we hit some kind of error.
2285 * Rather than walking some nodes, we'll walk none
2289 for (j = 0; j < i; j++) {
2290 /* ieee80211_free_node() locks by itself */
2291 ieee80211_free_node(ni_arr[j]);
2299 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2300 * reference in the source.
2302 * Note that this fetches 'max_aid' from the first VAP, rather than finding
2303 * the largest max_aid from all VAPs.
2306 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2307 ieee80211_iter_func *f, void *arg)
2309 struct ieee80211_node **ni_arr;
2313 struct ieee80211vap *vap;
2315 /* Overdoing it default */
2316 max_aid = IEEE80211_AID_MAX;
2318 /* Handle the case of there being no vaps just yet */
2319 vap = TAILQ_FIRST(&nt->nt_ic->ic_vaps);
2321 max_aid = vap->iv_max_aid;
2323 size = max_aid * sizeof(struct ieee80211_node *);
2324 ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
2325 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2330 * If this fails, the node table won't have any
2331 * valid entries - ieee80211_iterate_nt() frees
2332 * the references to them. So don't try walking
2333 * the table; just skip to the end and free the
2336 if (ieee80211_iterate_nt(nt, ni_arr, max_aid) != 0)
2339 for (i = 0; i < max_aid; i++) {
2340 if (ni_arr[i] == NULL) /* end of the list */
2342 (*f)(arg, ni_arr[i]);
2343 /* ieee80211_free_node() locks by itself */
2344 ieee80211_free_node(ni_arr[i]);
2348 IEEE80211_FREE(ni_arr, M_80211_NODE);
2352 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2354 printf("0x%p: mac %s refcnt %d\n", ni,
2355 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2356 printf("\tscangen %u authmode %u flags 0x%x\n",
2357 ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
2358 printf("\tassocid 0x%x txpower %u vlan %u\n",
2359 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2360 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2361 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2362 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2363 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2364 ni->ni_rxfragstamp);
2365 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2366 node_getrssi(ni), ni->ni_noise,
2367 ni->ni_intval, ni->ni_capinfo);
2368 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2369 ether_sprintf(ni->ni_bssid),
2370 ni->ni_esslen, ni->ni_essid,
2371 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2372 printf("\tinact %u inact_reload %u txrate %u\n",
2373 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2374 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2375 ni->ni_htcap, ni->ni_htparam,
2376 ni->ni_htctlchan, ni->ni_ht2ndchan);
2377 printf("\thtopmode %x htstbc %x chw %u\n",
2378 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2382 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2384 ieee80211_iterate_nodes(nt,
2385 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2389 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2391 struct ieee80211vap *vap;
2393 IEEE80211_LOCK_ASSERT(ic);
2395 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2396 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2397 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2401 ieee80211_notify_erp(struct ieee80211com *ic)
2404 ieee80211_notify_erp_locked(ic);
2405 IEEE80211_UNLOCK(ic);
2409 * Handle a station joining an 11g network.
2412 ieee80211_node_join_11g(struct ieee80211_node *ni)
2414 struct ieee80211com *ic = ni->ni_ic;
2416 IEEE80211_LOCK_ASSERT(ic);
2419 * Station isn't capable of short slot time. Bump
2420 * the count of long slot time stations and disable
2421 * use of short slot time. Note that the actual switch
2422 * over to long slot time use may not occur until the
2423 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2425 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2426 ic->ic_longslotsta++;
2427 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2428 "station needs long slot time, count %d",
2429 ic->ic_longslotsta);
2430 /* XXX vap's w/ conflicting needs won't work */
2431 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2433 * Don't force slot time when switched to turbo
2434 * mode as non-ERP stations won't be present; this
2435 * need only be done when on the normal G channel.
2437 ieee80211_set_shortslottime(ic, 0);
2441 * If the new station is not an ERP station
2442 * then bump the counter and enable protection
2445 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2447 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2448 "station is !ERP, %d non-ERP stations associated",
2451 * If station does not support short preamble
2452 * then we must enable use of Barker preamble.
2454 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2455 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2456 "%s", "station needs long preamble");
2457 ic->ic_flags |= IEEE80211_F_USEBARKER;
2458 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2461 * If protection is configured and this is the first
2462 * indication we should use protection, enable it.
2464 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2465 ic->ic_nonerpsta == 1 &&
2466 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2467 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2468 "%s: enable use of protection\n", __func__);
2469 ic->ic_flags |= IEEE80211_F_USEPROT;
2470 ieee80211_notify_erp_locked(ic);
2473 ni->ni_flags |= IEEE80211_NODE_ERP;
2477 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2479 struct ieee80211com *ic = ni->ni_ic;
2480 struct ieee80211vap *vap = ni->ni_vap;
2483 if (ni->ni_associd == 0) {
2486 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2488 * It would be good to search the bitmap
2489 * more efficiently, but this will do for now.
2491 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2492 if (!IEEE80211_AID_ISSET(vap, aid))
2495 if (aid >= vap->iv_max_aid) {
2496 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2497 ieee80211_node_leave(ni);
2500 ni->ni_associd = aid | 0xc000;
2501 ni->ni_jointime = time_uptime;
2503 IEEE80211_AID_SET(vap, ni->ni_associd);
2504 vap->iv_sta_assoc++;
2507 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2508 ieee80211_ht_node_join(ni);
2509 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2510 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2511 ieee80211_node_join_11g(ni);
2512 IEEE80211_UNLOCK(ic);
2518 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2519 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2520 IEEE80211_NODE_AID(ni),
2521 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2522 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2523 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2524 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2525 ni->ni_flags & IEEE80211_NODE_HT ?
2526 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2527 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2528 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2529 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2530 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2531 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2532 ", fast-frames" : "",
2533 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2537 ieee80211_node_setuptxparms(ni);
2538 ieee80211_ratectl_node_init(ni);
2539 /* give driver a chance to setup state like ni_txrate */
2540 if (ic->ic_newassoc != NULL)
2541 ic->ic_newassoc(ni, newassoc);
2542 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2543 /* tell the authenticator about new station */
2544 if (vap->iv_auth->ia_node_join != NULL)
2545 vap->iv_auth->ia_node_join(ni);
2546 ieee80211_notify_node_join(ni,
2547 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2551 disable_protection(struct ieee80211com *ic)
2553 KASSERT(ic->ic_nonerpsta == 0 &&
2554 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2555 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2558 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2559 /* XXX verify mode? */
2560 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2561 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2562 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2564 ieee80211_notify_erp_locked(ic);
2568 * Handle a station leaving an 11g network.
2571 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2573 struct ieee80211com *ic = ni->ni_ic;
2575 IEEE80211_LOCK_ASSERT(ic);
2577 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2578 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2579 ic->ic_bsschan->ic_flags));
2582 * If a long slot station do the slot time bookkeeping.
2584 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2585 KASSERT(ic->ic_longslotsta > 0,
2586 ("bogus long slot station count %d", ic->ic_longslotsta));
2587 ic->ic_longslotsta--;
2588 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2589 "long slot time station leaves, count now %d",
2590 ic->ic_longslotsta);
2591 if (ic->ic_longslotsta == 0) {
2593 * Re-enable use of short slot time if supported
2594 * and not operating in IBSS mode (per spec).
2596 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2597 ic->ic_opmode != IEEE80211_M_IBSS) {
2598 IEEE80211_DPRINTF(ni->ni_vap,
2599 IEEE80211_MSG_ASSOC,
2600 "%s: re-enable use of short slot time\n",
2602 ieee80211_set_shortslottime(ic, 1);
2607 * If a non-ERP station do the protection-related bookkeeping.
2609 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2610 KASSERT(ic->ic_nonerpsta > 0,
2611 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2613 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2614 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2615 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2616 " (non-ERP sta present)" : "");
2617 if (ic->ic_nonerpsta == 0 &&
2618 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2619 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2620 "%s: disable use of protection\n", __func__);
2621 disable_protection(ic);
2627 * Time out presence of an overlapping bss with non-ERP
2628 * stations. When operating in hostap mode we listen for
2629 * beacons from other stations and if we identify a non-ERP
2630 * station is present we enable protection. To identify
2631 * when all non-ERP stations are gone we time out this
2635 ieee80211_erp_timeout(struct ieee80211com *ic)
2638 IEEE80211_LOCK_ASSERT(ic);
2640 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2641 time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2643 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2644 "%s", "age out non-ERP sta present on channel");
2646 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2647 if (ic->ic_nonerpsta == 0)
2648 disable_protection(ic);
2653 * Handle bookkeeping for station deauthentication/disassociation
2654 * when operating as an ap.
2657 ieee80211_node_leave(struct ieee80211_node *ni)
2659 struct ieee80211com *ic = ni->ni_ic;
2660 struct ieee80211vap *vap = ni->ni_vap;
2661 struct ieee80211_node_table *nt = ni->ni_table;
2663 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2664 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2666 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2667 ("unexpected operating mode %u", vap->iv_opmode));
2669 * If node wasn't previously associated all
2670 * we need to do is reclaim the reference.
2672 /* XXX ibss mode bypasses 11g and notification */
2673 if (ni->ni_associd == 0)
2676 * Tell the authenticator the station is leaving.
2677 * Note that we must do this before yanking the
2678 * association id as the authenticator uses the
2679 * associd to locate it's state block.
2681 if (vap->iv_auth->ia_node_leave != NULL)
2682 vap->iv_auth->ia_node_leave(ni);
2685 IEEE80211_AID_CLR(vap, ni->ni_associd);
2686 vap->iv_sta_assoc--;
2689 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2690 ieee80211_ht_node_leave(ni);
2691 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2692 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2693 ieee80211_node_leave_11g(ni);
2694 IEEE80211_UNLOCK(ic);
2696 * Cleanup station state. In particular clear various
2697 * state that might otherwise be reused if the node
2698 * is reused before the reference count goes to zero
2699 * (and memory is reclaimed).
2701 ieee80211_sta_leave(ni);
2704 * Remove the node from any table it's recorded in and
2705 * drop the caller's reference. Removal from the table
2706 * is important to insure the node is not reprocessed
2710 IEEE80211_NODE_LOCK(nt);
2711 node_reclaim(nt, ni);
2712 IEEE80211_NODE_UNLOCK(nt);
2714 ieee80211_free_node(ni);
2718 struct ieee80211vap *vap;
2720 uint32_t rssi_total;
2724 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2726 struct rssiinfo *info = arg;
2727 struct ieee80211vap *vap = ni->ni_vap;
2730 if (info->vap != vap)
2732 /* only associated stations */
2733 if (ni->ni_associd == 0)
2735 rssi = vap->iv_ic->ic_node_getrssi(ni);
2737 info->rssi_samples++;
2738 info->rssi_total += rssi;
2743 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2745 struct rssiinfo *info = arg;
2746 struct ieee80211vap *vap = ni->ni_vap;
2749 if (info->vap != vap)
2751 /* only neighbors */
2752 /* XXX check bssid */
2753 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2755 rssi = vap->iv_ic->ic_node_getrssi(ni);
2757 info->rssi_samples++;
2758 info->rssi_total += rssi;
2762 #ifdef IEEE80211_SUPPORT_MESH
2764 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
2766 struct rssiinfo *info = arg;
2767 struct ieee80211vap *vap = ni->ni_vap;
2770 if (info->vap != vap)
2772 /* only neighbors that peered successfully */
2773 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
2775 rssi = vap->iv_ic->ic_node_getrssi(ni);
2777 info->rssi_samples++;
2778 info->rssi_total += rssi;
2781 #endif /* IEEE80211_SUPPORT_MESH */
2784 ieee80211_getrssi(struct ieee80211vap *vap)
2786 #define NZ(x) ((x) == 0 ? 1 : (x))
2787 struct ieee80211com *ic = vap->iv_ic;
2788 struct rssiinfo info;
2790 info.rssi_total = 0;
2791 info.rssi_samples = 0;
2793 switch (vap->iv_opmode) {
2794 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
2795 case IEEE80211_M_AHDEMO: /* average of all neighbors */
2796 ieee80211_iterate_nodes(&ic->ic_sta, get_adhoc_rssi, &info);
2798 case IEEE80211_M_HOSTAP: /* average of all associated stations */
2799 ieee80211_iterate_nodes(&ic->ic_sta, get_hostap_rssi, &info);
2801 #ifdef IEEE80211_SUPPORT_MESH
2802 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
2803 ieee80211_iterate_nodes(&ic->ic_sta, get_mesh_rssi, &info);
2806 case IEEE80211_M_MONITOR: /* XXX */
2807 case IEEE80211_M_STA: /* use stats from associated ap */
2809 if (vap->iv_bss != NULL)
2810 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
2811 info.rssi_samples = 1;
2814 return info.rssi_total / NZ(info.rssi_samples);
2819 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
2822 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
2824 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
2825 /* for non-station mode return avg'd rssi accounting */
2826 if (vap->iv_opmode != IEEE80211_M_STA)
2827 *rssi = ieee80211_getrssi(vap);