2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 Atsushi Onoe
5 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
40 #include <sys/socket.h>
43 #include <net/if_var.h>
44 #include <net/if_media.h>
45 #include <net/ethernet.h>
47 #include <net80211/ieee80211_var.h>
48 #include <net80211/ieee80211_input.h>
49 #ifdef IEEE80211_SUPPORT_SUPERG
50 #include <net80211/ieee80211_superg.h>
52 #ifdef IEEE80211_SUPPORT_TDMA
53 #include <net80211/ieee80211_tdma.h>
55 #include <net80211/ieee80211_wds.h>
56 #include <net80211/ieee80211_mesh.h>
57 #include <net80211/ieee80211_ratectl.h>
58 #include <net80211/ieee80211_vht.h>
63 * IEEE80211_NODE_HASHSIZE must be a power of 2.
65 CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0);
68 * Association id's are managed with a bit vector.
70 #define IEEE80211_AID_SET(_vap, b) \
71 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \
72 (1 << (IEEE80211_AID(b) % 32)))
73 #define IEEE80211_AID_CLR(_vap, b) \
74 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \
75 ~(1 << (IEEE80211_AID(b) % 32)))
76 #define IEEE80211_AID_ISSET(_vap, b) \
77 ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32)))
79 static int ieee80211_sta_join1(struct ieee80211_node *);
81 static struct ieee80211_node *node_alloc(struct ieee80211vap *,
82 const uint8_t [IEEE80211_ADDR_LEN]);
83 static void node_cleanup(struct ieee80211_node *);
84 static void node_free(struct ieee80211_node *);
85 static void node_age(struct ieee80211_node *);
86 static int8_t node_getrssi(const struct ieee80211_node *);
87 static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *);
88 static void node_getmimoinfo(const struct ieee80211_node *,
89 struct ieee80211_mimo_info *);
91 static void _ieee80211_free_node(struct ieee80211_node *);
93 static void node_reclaim(struct ieee80211_node_table *nt,
94 struct ieee80211_node *ni);
95 static void ieee80211_node_table_init(struct ieee80211com *ic,
96 struct ieee80211_node_table *nt, const char *name,
97 int inact, int keymaxix);
98 static void ieee80211_node_table_reset(struct ieee80211_node_table *,
99 struct ieee80211vap *);
100 static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
101 static void ieee80211_erp_timeout(struct ieee80211com *);
103 MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
104 MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
107 ieee80211_node_attach(struct ieee80211com *ic)
109 /* XXX really want maxlen enforced per-sta */
110 ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
112 ieee80211_node_table_init(ic, &ic->ic_sta, "station",
113 IEEE80211_INACT_INIT, ic->ic_max_keyix);
114 callout_init(&ic->ic_inact, 1);
115 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
116 ieee80211_node_timeout, ic);
118 ic->ic_node_alloc = node_alloc;
119 ic->ic_node_free = node_free;
120 ic->ic_node_cleanup = node_cleanup;
121 ic->ic_node_age = node_age;
122 ic->ic_node_drain = node_age; /* NB: same as age */
123 ic->ic_node_getrssi = node_getrssi;
124 ic->ic_node_getsignal = node_getsignal;
125 ic->ic_node_getmimoinfo = node_getmimoinfo;
128 * Set flags to be propagated to all vap's;
129 * these define default behaviour/configuration.
131 ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
135 ieee80211_node_detach(struct ieee80211com *ic)
138 callout_drain(&ic->ic_inact);
139 ieee80211_node_table_cleanup(&ic->ic_sta);
140 ieee80211_ageq_cleanup(&ic->ic_stageq);
144 ieee80211_node_vattach(struct ieee80211vap *vap)
146 /* NB: driver can override */
147 vap->iv_max_aid = IEEE80211_AID_DEF;
149 /* default station inactivity timer setings */
150 vap->iv_inact_init = IEEE80211_INACT_INIT;
151 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
152 vap->iv_inact_run = IEEE80211_INACT_RUN;
153 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
155 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
156 "%s: init %u auth %u run %u probe %u\n", __func__,
157 vap->iv_inact_init, vap->iv_inact_auth,
158 vap->iv_inact_run, vap->iv_inact_probe);
162 ieee80211_node_latevattach(struct ieee80211vap *vap)
164 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
165 /* XXX should we allow max aid to be zero? */
166 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
167 vap->iv_max_aid = IEEE80211_AID_MIN;
168 if_printf(vap->iv_ifp,
169 "WARNING: max aid too small, changed to %d\n",
172 vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC(
173 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
175 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
176 if (vap->iv_aid_bitmap == NULL) {
177 /* XXX no way to recover */
178 printf("%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 IEEE80211_FREE(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_VHT) {
247 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
248 mode = IEEE80211_MODE_VHT_5GHZ;
250 mode = IEEE80211_MODE_VHT_2GHZ;
251 } else if (ni->ni_flags & IEEE80211_NODE_HT) {
252 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
253 mode = IEEE80211_MODE_11NA;
255 mode = IEEE80211_MODE_11NG;
256 } else { /* legacy rate handling */
257 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
258 mode = IEEE80211_MODE_STURBO_A;
259 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
260 mode = IEEE80211_MODE_HALF;
261 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
262 mode = IEEE80211_MODE_QUARTER;
263 /* NB: 108A should be handled as 11a */
264 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
265 mode = IEEE80211_MODE_11A;
266 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
267 (ni->ni_flags & IEEE80211_NODE_ERP))
268 mode = IEEE80211_MODE_11G;
270 mode = IEEE80211_MODE_11B;
272 ni->ni_txparms = &vap->iv_txparms[mode];
276 * Set/change the channel. The rate set is also updated as
277 * to insure a consistent view by drivers.
278 * XXX should be private but hostap needs it to deal with CSA
281 ieee80211_node_set_chan(struct ieee80211_node *ni,
282 struct ieee80211_channel *chan)
284 struct ieee80211com *ic = ni->ni_ic;
285 struct ieee80211vap *vap = ni->ni_vap;
286 enum ieee80211_phymode mode;
288 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
291 mode = ieee80211_chan2mode(chan);
292 if (IEEE80211_IS_CHAN_HT(chan)) {
294 * We must install the legacy rate est in ni_rates and the
295 * HT rate set in ni_htrates.
297 ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
299 * Setup bss tx parameters based on operating mode. We
300 * use legacy rates when operating in a mixed HT+non-HT bss
301 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
303 if (mode == IEEE80211_MODE_11NA &&
304 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
305 mode = IEEE80211_MODE_11A;
306 else if (mode == IEEE80211_MODE_11NG &&
307 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
308 mode = IEEE80211_MODE_11G;
309 if (mode == IEEE80211_MODE_11G &&
310 (vap->iv_flags & IEEE80211_F_PUREG) == 0)
311 mode = IEEE80211_MODE_11B;
313 ni->ni_txparms = &vap->iv_txparms[mode];
314 ni->ni_rates = *ieee80211_get_suprates(ic, chan);
318 copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
320 /* propagate useful state */
321 nbss->ni_authmode = obss->ni_authmode;
322 nbss->ni_txpower = obss->ni_txpower;
323 nbss->ni_vlan = obss->ni_vlan;
324 /* XXX statistics? */
325 /* XXX legacy WDS bssid? */
329 ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
331 struct ieee80211com *ic = vap->iv_ic;
332 struct ieee80211_node *ni;
334 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
335 "%s: creating %s on channel %u%c flags 0x%08x\n", __func__,
336 ieee80211_opmode_name[vap->iv_opmode],
337 ieee80211_chan2ieee(ic, chan),
338 ieee80211_channel_type_char(chan),
341 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
346 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
347 ni->ni_esslen = vap->iv_des_ssid[0].len;
348 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
349 if (vap->iv_bss != NULL)
350 copy_bss(ni, vap->iv_bss);
351 ni->ni_intval = ic->ic_bintval;
352 if (vap->iv_flags & IEEE80211_F_PRIVACY)
353 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
354 if (ic->ic_phytype == IEEE80211_T_FH) {
355 ni->ni_fhdwell = 200; /* XXX */
358 if (vap->iv_opmode == IEEE80211_M_IBSS) {
359 ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
360 if (vap->iv_flags & IEEE80211_F_DESBSSID)
361 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
363 get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
364 /* clear group bit, add local bit */
365 ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
367 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
368 if (vap->iv_flags & IEEE80211_F_DESBSSID)
369 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
371 #ifdef IEEE80211_SUPPORT_TDMA
372 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
374 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
375 #ifdef IEEE80211_SUPPORT_MESH
376 } else if (vap->iv_opmode == IEEE80211_M_MBSS) {
377 ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
378 memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
382 * Fix the channel and related attributes.
384 /* clear DFS CAC state on previous channel */
385 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
386 ic->ic_bsschan->ic_freq != chan->ic_freq &&
387 IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
388 ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
389 ic->ic_bsschan = chan;
390 ieee80211_node_set_chan(ni, chan);
391 ic->ic_curmode = ieee80211_chan2mode(chan);
393 * Do mode-specific setup.
395 if (IEEE80211_IS_CHAN_FULL(chan)) {
396 if (IEEE80211_IS_CHAN_ANYG(chan)) {
398 * Use a mixed 11b/11g basic rate set.
400 ieee80211_setbasicrates(&ni->ni_rates,
402 if (vap->iv_flags & IEEE80211_F_PUREG) {
404 * Also mark OFDM rates basic so 11b
405 * stations do not join (WiFi compliance).
407 ieee80211_addbasicrates(&ni->ni_rates,
410 } else if (IEEE80211_IS_CHAN_B(chan)) {
412 * Force pure 11b rate set.
414 ieee80211_setbasicrates(&ni->ni_rates,
419 /* XXX TODO: other bits and pieces - eg fast-frames? */
421 /* If we're an 11n channel then initialise the 11n bits */
422 if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
424 ieee80211_ht_node_init(ni);
425 ieee80211_vht_node_init(ni);
426 } else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
428 ieee80211_ht_node_init(ni);
431 (void) ieee80211_sta_join1(ieee80211_ref_node(ni));
435 * Reset bss state on transition to the INIT state.
436 * Clear any stations from the table (they have been
437 * deauth'd) and reset the bss node (clears key, rate
441 ieee80211_reset_bss(struct ieee80211vap *vap)
443 struct ieee80211com *ic = vap->iv_ic;
444 struct ieee80211_node *ni, *obss;
446 ieee80211_node_table_reset(&ic->ic_sta, vap);
447 /* XXX multi-bss: wrong */
448 ieee80211_reset_erp(ic);
450 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
451 KASSERT(ni != NULL, ("unable to setup initial BSS node"));
453 vap->iv_bss = ieee80211_ref_node(ni);
456 ni->ni_intval = ic->ic_bintval;
457 ieee80211_free_node(obss);
459 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
463 match_ssid(const struct ieee80211_node *ni,
464 int nssid, const struct ieee80211_scan_ssid ssids[])
468 for (i = 0; i < nssid; i++) {
469 if (ni->ni_esslen == ssids[i].len &&
470 memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
477 * Test a node for suitability/compatibility.
480 check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
482 struct ieee80211com *ic = ni->ni_ic;
485 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
487 if (vap->iv_opmode == IEEE80211_M_IBSS) {
488 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
491 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
494 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
495 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
498 /* XXX does this mean privacy is supported or required? */
499 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
502 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
503 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
504 if (rate & IEEE80211_RATE_BASIC)
506 if (vap->iv_des_nssid != 0 &&
507 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
509 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
510 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
515 #ifdef IEEE80211_DEBUG
517 * Display node suitability/compatibility.
520 check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
522 struct ieee80211com *ic = ni->ni_ic;
527 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
529 if (vap->iv_opmode == IEEE80211_M_IBSS) {
530 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
533 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
536 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
537 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
540 /* XXX does this mean privacy is supported or required? */
541 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
544 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
545 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
546 if (rate & IEEE80211_RATE_BASIC)
548 if (vap->iv_des_nssid != 0 &&
549 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
551 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
552 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
555 printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
556 printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
558 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
559 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
560 fail & 0x08 ? '!' : ' ');
562 (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
563 (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
565 fail & 0x02 ? '!' : ' ');
567 (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
568 fail & 0x04 ? '!' : ' ');
569 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
570 printf("%s\n", fail & 0x10 ? "!" : "");
572 #endif /* IEEE80211_DEBUG */
576 ieee80211_ibss_merge_check(struct ieee80211_node *ni)
578 struct ieee80211vap *vap = ni->ni_vap;
580 if (ni == vap->iv_bss ||
581 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
582 /* unchanged, nothing to do */
586 if (!check_bss(vap, ni)) {
587 /* capabilities mismatch */
588 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
589 "%s: merge failed, capabilities mismatch\n", __func__);
590 #ifdef IEEE80211_DEBUG
591 if (ieee80211_msg_assoc(vap))
592 check_bss_debug(vap, ni);
594 vap->iv_stats.is_ibss_capmismatch++;
602 * Check if the given node should populate the node table.
604 * We need to be in "see all beacons for all ssids" mode in order
605 * to do IBSS merges, however this means we will populate nodes for
606 * /all/ IBSS SSIDs, versus just the one we care about.
608 * So this check ensures the node can actually belong to our IBSS
609 * configuration. For now it simply checks the SSID.
612 ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
613 const struct ieee80211_scanparams *scan)
615 struct ieee80211vap *vap = ni->ni_vap;
619 * If we have no SSID and no scan SSID, return OK.
621 if (vap->iv_des_nssid == 0 && scan->ssid == NULL)
625 * If we have one of (SSID, scan SSID) then return error.
627 if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL))
631 * Double-check - we need scan SSID.
633 if (scan->ssid == NULL)
637 * Check if the scan SSID matches the SSID list for the VAP.
639 for (i = 0; i < vap->iv_des_nssid; i++) {
641 /* Sanity length check */
642 if (vap->iv_des_ssid[i].len != scan->ssid[1])
645 /* Note: SSID in the scan entry is the IE format */
646 if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2,
647 vap->iv_des_ssid[i].len) == 0)
658 * Handle 802.11 ad hoc network merge. The
659 * convention, set by the Wireless Ethernet Compatibility Alliance
660 * (WECA), is that an 802.11 station will change its BSSID to match
661 * the "oldest" 802.11 ad hoc network, on the same channel, that
662 * has the station's desired SSID. The "oldest" 802.11 network
663 * sends beacons with the greatest TSF timestamp.
665 * The caller is assumed to validate TSF's before attempting a merge.
667 * Return !0 if the BSSID changed, 0 otherwise.
670 ieee80211_ibss_merge(struct ieee80211_node *ni)
672 #ifdef IEEE80211_DEBUG
673 struct ieee80211vap *vap = ni->ni_vap;
674 struct ieee80211com *ic = ni->ni_ic;
677 if (! ieee80211_ibss_merge_check(ni))
680 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
681 "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
682 ether_sprintf(ni->ni_bssid),
683 ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
684 ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
685 ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : ""
687 return ieee80211_sta_join1(ieee80211_ref_node(ni));
691 * Calculate HT channel promotion flags for all vaps.
692 * This assumes ni_chan have been setup for each vap.
695 gethtadjustflags(struct ieee80211com *ic)
697 struct ieee80211vap *vap;
702 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
703 if (vap->iv_state < IEEE80211_S_RUN)
705 switch (vap->iv_opmode) {
706 case IEEE80211_M_WDS:
707 case IEEE80211_M_STA:
708 case IEEE80211_M_AHDEMO:
709 case IEEE80211_M_HOSTAP:
710 case IEEE80211_M_IBSS:
711 case IEEE80211_M_MBSS:
712 flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
722 * Calculate VHT channel promotion flags for all vaps.
723 * This assumes ni_chan have been setup for each vap.
726 getvhtadjustflags(struct ieee80211com *ic)
728 struct ieee80211vap *vap;
733 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
734 if (vap->iv_state < IEEE80211_S_RUN)
736 switch (vap->iv_opmode) {
737 case IEEE80211_M_WDS:
738 case IEEE80211_M_STA:
739 case IEEE80211_M_AHDEMO:
740 case IEEE80211_M_HOSTAP:
741 case IEEE80211_M_IBSS:
742 case IEEE80211_M_MBSS:
743 flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan);
753 * Check if the current channel needs to change based on whether
754 * any vap's are using HT20/HT40. This is used to sync the state
755 * of ic_curchan after a channel width change on a running vap.
757 * Same applies for VHT.
760 ieee80211_sync_curchan(struct ieee80211com *ic)
762 struct ieee80211_channel *c;
764 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
765 c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic));
767 if (c != ic->ic_curchan) {
769 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
770 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
771 IEEE80211_UNLOCK(ic);
772 ic->ic_set_channel(ic);
773 ieee80211_radiotap_chan_change(ic);
779 * Setup the current channel. The request channel may be
780 * promoted if other vap's are operating with HT20/HT40.
783 ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
785 if (ic->ic_htcaps & IEEE80211_HTC_HT) {
786 int flags = gethtadjustflags(ic);
788 * Check for channel promotion required to support the
789 * set of running vap's. This assumes we are called
790 * after ni_chan is setup for each vap.
793 /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
794 if (flags > ieee80211_htchanflags(c))
795 c = ieee80211_ht_adjust_channel(ic, c, flags);
799 * VHT promotion - this will at least promote to VHT20/40
800 * based on what HT has done; it may further promote the
801 * channel to VHT80 or above.
803 if (ic->ic_vhtcaps != 0) {
804 int flags = getvhtadjustflags(ic);
805 if (flags > ieee80211_vhtchanflags(c))
806 c = ieee80211_vht_adjust_channel(ic, c, flags);
809 ic->ic_bsschan = ic->ic_curchan = c;
810 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
811 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
815 * Change the current channel. The channel change is guaranteed to have
816 * happened before the next state change.
819 ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
821 ieee80211_setupcurchan(ic, c);
822 ieee80211_runtask(ic, &ic->ic_chan_task);
826 ieee80211_update_chw(struct ieee80211com *ic)
829 ieee80211_setupcurchan(ic, ic->ic_curchan);
830 ieee80211_runtask(ic, &ic->ic_chw_task);
834 * Join the specified IBSS/BSS network. The node is assumed to
835 * be passed in with a held reference.
838 ieee80211_sta_join1(struct ieee80211_node *selbs)
840 struct ieee80211vap *vap = selbs->ni_vap;
841 struct ieee80211com *ic = selbs->ni_ic;
842 struct ieee80211_node *obss;
846 * Committed to selbs, setup state.
850 * Check if old+new node have the same address in which
851 * case we can reassociate when operating in sta mode.
853 canreassoc = (obss != NULL &&
854 vap->iv_state == IEEE80211_S_RUN &&
855 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
856 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
858 struct ieee80211_node_table *nt = obss->ni_table;
860 copy_bss(selbs, obss);
861 ieee80211_node_decref(obss); /* iv_bss reference */
863 IEEE80211_NODE_LOCK(nt);
864 node_reclaim(nt, obss); /* station table reference */
865 IEEE80211_NODE_UNLOCK(nt);
867 obss = NULL; /* NB: guard against later use */
871 * Delete unusable rates; we've already checked
872 * that the negotiated rate set is acceptable.
874 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
875 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
877 ieee80211_setcurchan(ic, selbs->ni_chan);
879 * Set the erp state (mostly the slot time) to deal with
880 * the auto-select case; this should be redundant if the
883 ieee80211_reset_erp(ic);
884 ieee80211_wme_initparams(vap);
886 if (vap->iv_opmode == IEEE80211_M_STA) {
889 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
892 * Act as if we received a DEAUTH frame in case we
893 * are invoked from the RUN state. This will cause
894 * us to try to re-authenticate if we are operating
897 ieee80211_new_state(vap, IEEE80211_S_AUTH,
898 IEEE80211_FC0_SUBTYPE_DEAUTH);
901 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
906 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
907 const struct ieee80211_scan_entry *se)
909 struct ieee80211com *ic = vap->iv_ic;
910 struct ieee80211_node *ni;
913 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
920 * Expand scan state into node's format.
921 * XXX may not need all this stuff
923 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
924 ni->ni_esslen = se->se_ssid[1];
925 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
926 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
927 ni->ni_intval = se->se_intval;
928 ni->ni_capinfo = se->se_capinfo;
930 ni->ni_timoff = se->se_timoff;
931 ni->ni_fhdwell = se->se_fhdwell;
932 ni->ni_fhindex = se->se_fhindex;
933 ni->ni_erp = se->se_erp;
934 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
935 ni->ni_noise = se->se_noise;
936 if (vap->iv_opmode == IEEE80211_M_STA) {
937 /* NB: only infrastructure mode requires an associd */
938 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
941 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
942 ieee80211_ies_expand(&ni->ni_ies);
943 #ifdef IEEE80211_SUPPORT_SUPERG
944 if (ni->ni_ies.ath_ie != NULL)
945 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
947 if (ni->ni_ies.htcap_ie != NULL)
948 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
949 if (ni->ni_ies.htinfo_ie != NULL)
950 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
951 #ifdef IEEE80211_SUPPORT_MESH
952 if (ni->ni_ies.meshid_ie != NULL)
953 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
955 #ifdef IEEE80211_SUPPORT_TDMA
956 if (ni->ni_ies.tdma_ie != NULL)
957 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
959 if (ni->ni_ies.vhtcap_ie != NULL)
960 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
961 if (ni->ni_ies.vhtopmode_ie != NULL)
962 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
964 /* XXX parse BSSLOAD IE */
965 /* XXX parse TXPWRENV IE */
966 /* XXX parse APCHANREP IE */
969 vap->iv_dtim_period = se->se_dtimperiod;
970 vap->iv_dtim_count = 0;
972 /* NB: must be after ni_chan is setup */
973 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
975 if (ieee80211_iserp_rateset(&ni->ni_rates))
976 ni->ni_flags |= IEEE80211_NODE_ERP;
979 * Setup HT state for this node if it's available, otherwise
980 * non-STA modes won't pick this state up.
982 * For IBSS and related modes that don't go through an
983 * association request/response, the only appropriate place
984 * to setup the HT state is here.
986 if (ni->ni_ies.htinfo_ie != NULL &&
987 ni->ni_ies.htcap_ie != NULL &&
988 vap->iv_flags_ht & IEEE80211_FHT_HT) {
989 ieee80211_ht_node_init(ni);
990 ieee80211_ht_updateparams(ni,
992 ni->ni_ies.htinfo_ie);
997 * Setup VHT state for this node if it's available.
1000 * For now, don't allow 2GHz VHT operation.
1002 if (ni->ni_ies.vhtopmode_ie != NULL &&
1003 ni->ni_ies.vhtcap_ie != NULL &&
1004 vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1005 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1006 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1011 ieee80211_vht_node_init(ni);
1012 ieee80211_vht_updateparams(ni,
1013 ni->ni_ies.vhtcap_ie,
1014 ni->ni_ies.vhtopmode_ie);
1015 ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie,
1016 ni->ni_ies.vhtopmode_ie);
1021 /* Finally do the node channel change */
1023 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1024 ni->ni_ies.htinfo_ie);
1025 ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
1026 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1027 ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
1030 /* XXX else check for ath FF? */
1031 /* XXX QoS? Difficult given that WME config is specific to a master */
1033 ieee80211_node_setuptxparms(ni);
1034 ieee80211_ratectl_node_init(ni);
1036 return ieee80211_sta_join1(ieee80211_ref_node(ni));
1040 * Leave the specified IBSS/BSS network. The node is assumed to
1041 * be passed in with a held reference.
1044 ieee80211_sta_leave(struct ieee80211_node *ni)
1046 struct ieee80211com *ic = ni->ni_ic;
1048 ic->ic_node_cleanup(ni);
1049 ieee80211_notify_node_leave(ni);
1053 * Send a deauthenticate frame and drop the station.
1056 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
1058 /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
1059 ieee80211_ref_node(ni);
1060 if (ni->ni_associd != 0)
1061 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
1062 ieee80211_node_leave(ni);
1063 ieee80211_free_node(ni);
1066 static struct ieee80211_node *
1067 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1069 struct ieee80211_node *ni;
1071 ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node),
1072 M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1077 * Initialize an ie blob with the specified data. If previous
1078 * data exists re-use the data block. As a side effect we clear
1079 * all references to specific ie's; the caller is required to
1083 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
1085 /* NB: assumes data+len are the last fields */
1086 memset(ies, 0, offsetof(struct ieee80211_ies, data));
1087 if (ies->data != NULL && ies->len != len) {
1088 /* data size changed */
1089 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1092 if (ies->data == NULL) {
1093 ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
1094 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1095 if (ies->data == NULL) {
1097 /* NB: pointers have already been zero'd above */
1101 memcpy(ies->data, data, len);
1107 * Reclaim storage for an ie blob.
1110 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
1112 if (ies->data != NULL)
1113 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1117 * Expand an ie blob data contents and to fillin individual
1118 * ie pointers. The data blob is assumed to be well-formed;
1119 * we don't do any validity checking of ie lengths.
1122 ieee80211_ies_expand(struct ieee80211_ies *ies)
1131 case IEEE80211_ELEMID_VENDOR:
1134 else if (iswmeoui(ie))
1136 #ifdef IEEE80211_SUPPORT_SUPERG
1137 else if (isatherosoui(ie))
1140 #ifdef IEEE80211_SUPPORT_TDMA
1141 else if (istdmaoui(ie))
1145 case IEEE80211_ELEMID_RSN:
1148 case IEEE80211_ELEMID_HTCAP:
1151 case IEEE80211_ELEMID_HTINFO:
1152 ies->htinfo_ie = ie;
1154 #ifdef IEEE80211_SUPPORT_MESH
1155 case IEEE80211_ELEMID_MESHID:
1156 ies->meshid_ie = ie;
1159 case IEEE80211_ELEMID_VHT_CAP:
1160 ies->vhtcap_ie = ie;
1162 case IEEE80211_ELEMID_VHT_OPMODE:
1163 ies->vhtopmode_ie = ie;
1165 case IEEE80211_ELEMID_VHT_PWR_ENV:
1166 ies->vhtpwrenv_ie = ie;
1168 case IEEE80211_ELEMID_BSSLOAD:
1169 ies->bssload_ie = ie;
1171 case IEEE80211_ELEMID_APCHANREP:
1172 ies->apchanrep_ie = ie;
1181 * Reclaim any resources in a node and reset any critical
1182 * state. Typically nodes are free'd immediately after,
1183 * but in some cases the storage may be reused so we need
1184 * to insure consistent state (should probably fix that).
1187 node_cleanup(struct ieee80211_node *ni)
1189 struct ieee80211vap *vap = ni->ni_vap;
1190 struct ieee80211com *ic = ni->ni_ic;
1193 /* NB: preserve ni_table */
1194 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
1195 if (vap->iv_opmode != IEEE80211_M_STA)
1197 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
1198 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
1199 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1202 * Cleanup any VHT and HT-related state.
1204 if (ni->ni_flags & IEEE80211_NODE_VHT)
1205 ieee80211_vht_node_cleanup(ni);
1206 if (ni->ni_flags & IEEE80211_NODE_HT)
1207 ieee80211_ht_node_cleanup(ni);
1208 #ifdef IEEE80211_SUPPORT_SUPERG
1209 /* Always do FF node cleanup; for A-MSDU */
1210 ieee80211_ff_node_cleanup(ni);
1212 #ifdef IEEE80211_SUPPORT_MESH
1214 * Cleanup any mesh-related state.
1216 if (vap->iv_opmode == IEEE80211_M_MBSS)
1217 ieee80211_mesh_node_cleanup(ni);
1220 * Clear any staging queue entries.
1222 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1225 * Clear AREF flag that marks the authorization refcnt bump
1226 * has happened. This is probably not needed as the node
1227 * should always be removed from the table so not found but
1228 * do it just in case.
1229 * Likewise clear the ASSOCID flag as these flags are intended
1230 * to be managed in tandem.
1232 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1235 * Drain power save queue and, if needed, clear TIM.
1237 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1238 vap->iv_set_tim(ni, 0);
1241 if (ni->ni_challenge != NULL) {
1242 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1243 ni->ni_challenge = NULL;
1246 * Preserve SSID, WPA, and WME ie's so the bss node is
1247 * reusable during a re-auth/re-assoc state transition.
1248 * If we remove these data they will not be recreated
1249 * because they come from a probe-response or beacon frame
1250 * which cannot be expected prior to the association-response.
1251 * This should not be an issue when operating in other modes
1252 * as stations leaving always go through a full state transition
1253 * which will rebuild this state.
1255 * XXX does this leave us open to inheriting old state?
1257 for (i = 0; i < nitems(ni->ni_rxfrag); i++)
1258 if (ni->ni_rxfrag[i] != NULL) {
1259 m_freem(ni->ni_rxfrag[i]);
1260 ni->ni_rxfrag[i] = NULL;
1263 * Must be careful here to remove any key map entry w/o a LOR.
1265 ieee80211_node_delucastkey(ni);
1269 node_free(struct ieee80211_node *ni)
1271 struct ieee80211com *ic = ni->ni_ic;
1273 ieee80211_ratectl_node_deinit(ni);
1274 ic->ic_node_cleanup(ni);
1275 ieee80211_ies_cleanup(&ni->ni_ies);
1276 ieee80211_psq_cleanup(&ni->ni_psq);
1277 IEEE80211_FREE(ni, M_80211_NODE);
1281 node_age(struct ieee80211_node *ni)
1283 struct ieee80211vap *vap = ni->ni_vap;
1286 * Age frames on the power save queue.
1288 if (ieee80211_node_psq_age(ni) != 0 &&
1289 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1290 vap->iv_set_tim(ni, 0);
1292 * Age out HT resources (e.g. frames on the
1293 * A-MPDU reorder queues).
1295 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1296 ieee80211_ht_node_age(ni);
1300 node_getrssi(const struct ieee80211_node *ni)
1302 uint32_t avgrssi = ni->ni_avgrssi;
1305 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1307 rssi = IEEE80211_RSSI_GET(avgrssi);
1308 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1312 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1314 *rssi = node_getrssi(ni);
1315 *noise = ni->ni_noise;
1319 node_getmimoinfo(const struct ieee80211_node *ni,
1320 struct ieee80211_mimo_info *info)
1326 bzero(info, sizeof(*info));
1328 for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) {
1329 /* Note: for now, just pri20 channel info */
1330 avgrssi = ni->ni_mimo_rssi_ctl[i];
1331 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1332 info->ch[i].rssi[0] = 0;
1334 rssi = IEEE80211_RSSI_GET(avgrssi);
1335 info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1337 info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i];
1340 /* XXX ext radios? */
1346 ieee80211_add_node_nt(struct ieee80211_node_table *nt,
1347 struct ieee80211_node *ni)
1349 struct ieee80211com *ic = nt->nt_ic;
1352 IEEE80211_NODE_LOCK_ASSERT(nt);
1354 hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr);
1355 (void) ic; /* XXX IEEE80211_NODE_HASH */
1356 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1357 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1363 ieee80211_del_node_nt(struct ieee80211_node_table *nt,
1364 struct ieee80211_node *ni)
1367 IEEE80211_NODE_LOCK_ASSERT(nt);
1369 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1370 LIST_REMOVE(ni, ni_hash);
1372 KASSERT(nt->nt_count >= 0,
1373 ("nt_count is negative (%d)!\n", nt->nt_count));
1374 ni->ni_table = NULL;
1377 struct ieee80211_node *
1378 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1379 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1381 struct ieee80211com *ic = nt->nt_ic;
1382 struct ieee80211_node *ni;
1384 ni = ic->ic_node_alloc(vap, macaddr);
1386 vap->iv_stats.is_rx_nodealloc++;
1390 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1391 "%s %p<%s> in %s table\n", __func__, ni,
1392 ether_sprintf(macaddr), nt->nt_name);
1394 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1395 ieee80211_node_initref(ni); /* mark referenced */
1396 ni->ni_chan = IEEE80211_CHAN_ANYC;
1397 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1398 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1399 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1400 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1401 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1402 ni->ni_inact_reload = nt->nt_inact_init;
1403 ni->ni_inact = ni->ni_inact_reload;
1404 ni->ni_ath_defkeyix = 0x7fff;
1405 ieee80211_psq_init(&ni->ni_psq, "unknown");
1406 #ifdef IEEE80211_SUPPORT_MESH
1407 if (vap->iv_opmode == IEEE80211_M_MBSS)
1408 ieee80211_mesh_node_init(vap, ni);
1410 IEEE80211_NODE_LOCK(nt);
1411 ieee80211_add_node_nt(nt, ni);
1414 IEEE80211_NODE_UNLOCK(nt);
1416 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1417 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1419 ieee80211_ratectl_node_init(ni);
1425 * Craft a temporary node suitable for sending a management frame
1426 * to the specified station. We craft only as much state as we
1427 * need to do the work since the node will be immediately reclaimed
1428 * once the send completes.
1430 struct ieee80211_node *
1431 ieee80211_tmp_node(struct ieee80211vap *vap,
1432 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1434 struct ieee80211com *ic = vap->iv_ic;
1435 struct ieee80211_node *ni;
1437 ni = ic->ic_node_alloc(vap, macaddr);
1439 struct ieee80211_node *bss = vap->iv_bss;
1441 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1442 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1444 ni->ni_table = NULL; /* NB: pedantic */
1445 ni->ni_ic = ic; /* NB: needed to set channel */
1448 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1449 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1450 ieee80211_node_initref(ni); /* mark referenced */
1451 /* NB: required by ieee80211_fix_rate */
1452 ieee80211_node_set_chan(ni, bss->ni_chan);
1453 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1454 IEEE80211_KEYIX_NONE);
1455 ni->ni_txpower = bss->ni_txpower;
1456 /* XXX optimize away */
1457 ieee80211_psq_init(&ni->ni_psq, "unknown");
1459 ieee80211_ratectl_node_init(ni);
1462 vap->iv_stats.is_rx_nodealloc++;
1467 struct ieee80211_node *
1468 ieee80211_dup_bss(struct ieee80211vap *vap,
1469 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1471 struct ieee80211com *ic = vap->iv_ic;
1472 struct ieee80211_node *ni;
1474 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1476 struct ieee80211_node *bss = vap->iv_bss;
1478 * Inherit from iv_bss.
1481 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1482 ieee80211_node_set_chan(ni, bss->ni_chan);
1488 * Create a bss node for a legacy WDS vap. The far end does
1489 * not associate so we just create create a new node and
1490 * simulate an association. The caller is responsible for
1491 * installing the node as the bss node and handling any further
1492 * setup work like authorizing the port.
1494 struct ieee80211_node *
1495 ieee80211_node_create_wds(struct ieee80211vap *vap,
1496 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1498 struct ieee80211com *ic = vap->iv_ic;
1499 struct ieee80211_node *ni;
1501 /* XXX check if node already in sta table? */
1502 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1504 ni->ni_wdsvap = vap;
1505 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1507 * Inherit any manually configured settings.
1509 copy_bss(ni, vap->iv_bss);
1510 ieee80211_node_set_chan(ni, chan);
1511 /* NB: propagate ssid so available to WPA supplicant */
1512 ni->ni_esslen = vap->iv_des_ssid[0].len;
1513 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1514 /* NB: no associd for peer */
1516 * There are no management frames to use to
1517 * discover neighbor capabilities, so blindly
1518 * propagate the local configuration.
1520 if (vap->iv_flags & IEEE80211_F_WME)
1521 ni->ni_flags |= IEEE80211_NODE_QOS;
1522 #ifdef IEEE80211_SUPPORT_SUPERG
1523 if (vap->iv_flags & IEEE80211_F_FF)
1524 ni->ni_flags |= IEEE80211_NODE_FF;
1527 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1528 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1530 * Device is HT-capable and HT is enabled for
1531 * the vap; setup HT operation. On return
1532 * ni_chan will be adjusted to an HT channel.
1534 ieee80211_ht_wds_init(ni);
1535 if (vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1536 printf("%s: TODO: vht_wds_init\n", __func__);
1539 struct ieee80211_channel *c = ni->ni_chan;
1541 * Force a legacy channel to be used.
1543 c = ieee80211_find_channel(ic,
1544 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1545 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1546 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1553 struct ieee80211_node *
1554 #ifdef IEEE80211_DEBUG_REFCNT
1555 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1556 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1558 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1559 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1562 struct ieee80211_node *ni;
1565 IEEE80211_NODE_LOCK_ASSERT(nt);
1567 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1568 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1569 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1570 ieee80211_ref_node(ni); /* mark referenced */
1571 #ifdef IEEE80211_DEBUG_REFCNT
1572 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1573 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1575 ni, ether_sprintf(ni->ni_macaddr),
1576 ieee80211_node_refcnt(ni));
1584 struct ieee80211_node *
1585 #ifdef IEEE80211_DEBUG_REFCNT
1586 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1587 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1589 ieee80211_find_node(struct ieee80211_node_table *nt,
1590 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1593 struct ieee80211_node *ni;
1595 IEEE80211_NODE_LOCK(nt);
1596 ni = ieee80211_find_node_locked(nt, macaddr);
1597 IEEE80211_NODE_UNLOCK(nt);
1601 struct ieee80211_node *
1602 #ifdef IEEE80211_DEBUG_REFCNT
1603 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1604 const struct ieee80211vap *vap,
1605 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1607 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1608 const struct ieee80211vap *vap,
1609 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1612 struct ieee80211_node *ni;
1615 IEEE80211_NODE_LOCK_ASSERT(nt);
1617 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1618 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1619 if (ni->ni_vap == vap &&
1620 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1621 ieee80211_ref_node(ni); /* mark referenced */
1622 #ifdef IEEE80211_DEBUG_REFCNT
1623 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1624 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1626 ni, ether_sprintf(ni->ni_macaddr),
1627 ieee80211_node_refcnt(ni));
1635 struct ieee80211_node *
1636 #ifdef IEEE80211_DEBUG_REFCNT
1637 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1638 const struct ieee80211vap *vap,
1639 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1641 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1642 const struct ieee80211vap *vap,
1643 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1646 struct ieee80211_node *ni;
1648 IEEE80211_NODE_LOCK(nt);
1649 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1650 IEEE80211_NODE_UNLOCK(nt);
1655 * Fake up a node; this handles node discovery in adhoc mode.
1656 * Note that for the driver's benefit we we treat this like
1657 * an association so the driver has an opportunity to setup
1658 * it's private state.
1660 struct ieee80211_node *
1661 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1662 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1664 struct ieee80211_node *ni;
1666 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1667 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1668 ni = ieee80211_dup_bss(vap, macaddr);
1670 struct ieee80211com *ic = vap->iv_ic;
1672 /* XXX no rate negotiation; just dup */
1673 ni->ni_rates = vap->iv_bss->ni_rates;
1674 if (ieee80211_iserp_rateset(&ni->ni_rates))
1675 ni->ni_flags |= IEEE80211_NODE_ERP;
1676 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1678 * In adhoc demo mode there are no management
1679 * frames to use to discover neighbor capabilities,
1680 * so blindly propagate the local configuration
1681 * so we can do interesting things (e.g. use
1682 * WME to disable ACK's).
1687 if (vap->iv_flags & IEEE80211_F_WME)
1688 ni->ni_flags |= IEEE80211_NODE_QOS;
1689 #ifdef IEEE80211_SUPPORT_SUPERG
1690 if (vap->iv_flags & IEEE80211_F_FF)
1691 ni->ni_flags |= IEEE80211_NODE_FF;
1694 ieee80211_node_setuptxparms(ni);
1695 ieee80211_ratectl_node_init(ni);
1698 * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX,
1699 * not A-MPDU TX; not 11n rates, etc. We'll cycle
1700 * that after we hear that we can indeed do 11n
1701 * (either by a beacon frame or by a probe response.)
1705 * This is the first time we see the node.
1707 if (ic->ic_newassoc != NULL)
1708 ic->ic_newassoc(ni, 1);
1711 * Kick off a probe request to the given node;
1712 * we will then use the probe response to update
1713 * 11n/etc configuration state.
1715 * XXX TODO: this isn't guaranteed, and until we get
1716 * a probe response, we won't be able to actually
1717 * do anything 802.11n related to the node.
1718 * So if this does indeed work, maybe we should hold
1719 * off on sending responses until we get the probe
1720 * response, or just default to some sensible subset
1721 * of 802.11n behaviour (eg always allow aggregation
1722 * negotiation TO us, but not FROM us, etc) so we
1723 * aren't entirely busted.
1725 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1726 ieee80211_send_probereq(ni, /* node */
1727 vap->iv_myaddr, /* SA */
1728 ni->ni_macaddr, /* DA */
1729 vap->iv_bss->ni_bssid, /* BSSID */
1730 vap->iv_bss->ni_essid,
1731 vap->iv_bss->ni_esslen); /* SSID */
1734 /* XXX not right for 802.1x/WPA */
1735 ieee80211_node_authorize(ni);
1741 ieee80211_init_neighbor(struct ieee80211_node *ni,
1742 const struct ieee80211_frame *wh,
1743 const struct ieee80211_scanparams *sp)
1745 int do_ht_setup = 0, do_vht_setup = 0;
1747 ni->ni_esslen = sp->ssid[1];
1748 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1749 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1750 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1751 ni->ni_intval = sp->bintval;
1752 ni->ni_capinfo = sp->capinfo;
1753 ni->ni_chan = ni->ni_ic->ic_curchan;
1754 ni->ni_fhdwell = sp->fhdwell;
1755 ni->ni_fhindex = sp->fhindex;
1756 ni->ni_erp = sp->erp;
1757 ni->ni_timoff = sp->timoff;
1758 #ifdef IEEE80211_SUPPORT_MESH
1759 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1760 ieee80211_mesh_init_neighbor(ni, wh, sp);
1762 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1763 ieee80211_ies_expand(&ni->ni_ies);
1764 if (ni->ni_ies.wme_ie != NULL)
1765 ni->ni_flags |= IEEE80211_NODE_QOS;
1767 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1768 #ifdef IEEE80211_SUPPORT_SUPERG
1769 if (ni->ni_ies.ath_ie != NULL)
1770 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1772 if (ni->ni_ies.htcap_ie != NULL)
1773 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1774 if (ni->ni_ies.htinfo_ie != NULL)
1775 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1777 if (ni->ni_ies.vhtcap_ie != NULL)
1778 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
1779 if (ni->ni_ies.vhtopmode_ie != NULL)
1780 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
1782 if ((ni->ni_ies.htcap_ie != NULL) &&
1783 (ni->ni_ies.htinfo_ie != NULL) &&
1784 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1788 if ((ni->ni_ies.vhtcap_ie != NULL) &&
1789 (ni->ni_ies.vhtopmode_ie != NULL) &&
1790 (ni->ni_vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1796 /* NB: must be after ni_chan is setup */
1797 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1798 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1799 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1802 * If the neighbor is HT compatible, flip that on.
1805 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1806 "%s: doing HT setup\n", __func__);
1807 ieee80211_ht_node_init(ni);
1808 ieee80211_ht_updateparams(ni,
1809 ni->ni_ies.htcap_ie,
1810 ni->ni_ies.htinfo_ie);
1813 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1814 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1819 ieee80211_vht_node_init(ni);
1820 ieee80211_vht_updateparams(ni,
1821 ni->ni_ies.vhtcap_ie,
1822 ni->ni_ies.vhtopmode_ie);
1823 ieee80211_setup_vht_rates(ni,
1824 ni->ni_ies.vhtcap_ie,
1825 ni->ni_ies.vhtopmode_ie);
1830 * Finally do the channel upgrade/change based
1831 * on the HT/VHT configuration.
1833 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1834 ni->ni_ies.htinfo_ie);
1835 ieee80211_setup_htrates(ni,
1836 ni->ni_ies.htcap_ie,
1837 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1838 ieee80211_setup_basic_htrates(ni,
1839 ni->ni_ies.htinfo_ie);
1841 ieee80211_node_setuptxparms(ni);
1842 ieee80211_ratectl_node_init(ni);
1844 /* Reassociate; we're now 11n/11ac */
1846 * XXX TODO: this is the wrong thing to do -
1847 * we're calling it with isnew=1 so the ath(4)
1848 * driver reinitialises the rate tables.
1849 * This "mostly" works for ath(4), but it won't
1850 * be right for firmware devices which allocate
1853 * So, do we just create a new node and delete
1856 if (ni->ni_ic->ic_newassoc)
1857 ni->ni_ic->ic_newassoc(ni, 1);
1862 * Do node discovery in adhoc mode on receipt of a beacon
1863 * or probe response frame. Note that for the driver's
1864 * benefit we we treat this like an association so the
1865 * driver has an opportunity to setup it's private state.
1867 struct ieee80211_node *
1868 ieee80211_add_neighbor(struct ieee80211vap *vap,
1869 const struct ieee80211_frame *wh,
1870 const struct ieee80211_scanparams *sp)
1872 struct ieee80211_node *ni;
1874 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1875 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1876 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1878 struct ieee80211com *ic = vap->iv_ic;
1880 ieee80211_init_neighbor(ni, wh, sp);
1881 if (ieee80211_iserp_rateset(&ni->ni_rates))
1882 ni->ni_flags |= IEEE80211_NODE_ERP;
1883 ieee80211_node_setuptxparms(ni);
1884 ieee80211_ratectl_node_init(ni);
1885 if (ic->ic_newassoc != NULL)
1886 ic->ic_newassoc(ni, 1);
1887 /* XXX not right for 802.1x/WPA */
1888 ieee80211_node_authorize(ni);
1893 #define IS_PROBEREQ(wh) \
1894 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1895 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1896 #define IS_BCAST_PROBEREQ(wh) \
1897 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1898 ((const struct ieee80211_frame *)(wh))->i_addr3))
1900 static __inline struct ieee80211_node *
1901 _find_rxnode(struct ieee80211_node_table *nt,
1902 const struct ieee80211_frame_min *wh)
1904 if (IS_BCAST_PROBEREQ(wh))
1905 return NULL; /* spam bcast probe req to all vap's */
1906 return ieee80211_find_node_locked(nt, wh->i_addr2);
1910 * Locate the node for sender, track state, and then pass the
1911 * (referenced) node up to the 802.11 layer for its use. Note
1912 * we can return NULL if the sender is not in the table.
1914 struct ieee80211_node *
1915 #ifdef IEEE80211_DEBUG_REFCNT
1916 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1917 const struct ieee80211_frame_min *wh, const char *func, int line)
1919 ieee80211_find_rxnode(struct ieee80211com *ic,
1920 const struct ieee80211_frame_min *wh)
1923 struct ieee80211_node_table *nt;
1924 struct ieee80211_node *ni;
1927 IEEE80211_NODE_LOCK(nt);
1928 ni = _find_rxnode(nt, wh);
1929 IEEE80211_NODE_UNLOCK(nt);
1935 * Like ieee80211_find_rxnode but use the supplied h/w
1936 * key index as a hint to locate the node in the key
1937 * mapping table. If an entry is present at the key
1938 * index we return it; otherwise do a normal lookup and
1939 * update the mapping table if the station has a unicast
1940 * key assigned to it.
1942 struct ieee80211_node *
1943 #ifdef IEEE80211_DEBUG_REFCNT
1944 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1945 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1946 const char *func, int line)
1948 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1949 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1952 struct ieee80211_node_table *nt;
1953 struct ieee80211_node *ni;
1956 IEEE80211_NODE_LOCK(nt);
1957 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1958 ni = nt->nt_keyixmap[keyix];
1962 ni = _find_rxnode(nt, wh);
1963 if (ni != NULL && nt->nt_keyixmap != NULL) {
1965 * If the station has a unicast key cache slot
1966 * assigned update the key->node mapping table.
1968 keyix = ni->ni_ucastkey.wk_rxkeyix;
1969 /* XXX can keyixmap[keyix] != NULL? */
1970 if (keyix < nt->nt_keyixmax &&
1971 nt->nt_keyixmap[keyix] == NULL) {
1972 IEEE80211_DPRINTF(ni->ni_vap,
1974 "%s: add key map entry %p<%s> refcnt %d\n",
1975 __func__, ni, ether_sprintf(ni->ni_macaddr),
1976 ieee80211_node_refcnt(ni)+1);
1977 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1981 if (IS_BCAST_PROBEREQ(wh))
1982 ni = NULL; /* spam bcast probe req to all vap's */
1984 ieee80211_ref_node(ni);
1986 IEEE80211_NODE_UNLOCK(nt);
1990 #undef IS_BCAST_PROBEREQ
1994 * Return a reference to the appropriate node for sending
1995 * a data frame. This handles node discovery in adhoc networks.
1997 struct ieee80211_node *
1998 #ifdef IEEE80211_DEBUG_REFCNT
1999 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
2000 const uint8_t macaddr[IEEE80211_ADDR_LEN],
2001 const char *func, int line)
2003 ieee80211_find_txnode(struct ieee80211vap *vap,
2004 const uint8_t macaddr[IEEE80211_ADDR_LEN])
2007 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
2008 struct ieee80211_node *ni;
2011 * The destination address should be in the node table
2012 * unless this is a multicast/broadcast frame. We can
2013 * also optimize station mode operation, all frames go
2016 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
2017 IEEE80211_NODE_LOCK(nt);
2018 if (vap->iv_opmode == IEEE80211_M_STA ||
2019 vap->iv_opmode == IEEE80211_M_WDS ||
2020 IEEE80211_IS_MULTICAST(macaddr))
2021 ni = ieee80211_ref_node(vap->iv_bss);
2023 ni = ieee80211_find_node_locked(nt, macaddr);
2024 IEEE80211_NODE_UNLOCK(nt);
2027 if (vap->iv_opmode == IEEE80211_M_IBSS ||
2028 vap->iv_opmode == IEEE80211_M_AHDEMO) {
2030 * In adhoc mode cons up a node for the destination.
2031 * Note that we need an additional reference for the
2032 * caller to be consistent with
2033 * ieee80211_find_node_locked.
2036 * XXX TODO: this doesn't fake up 11n state; we need
2037 * to find another way to get it upgraded.
2039 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
2041 (void) ieee80211_ref_node(ni);
2043 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
2044 "no node, discard frame (%s)", __func__);
2045 vap->iv_stats.is_tx_nonode++;
2052 _ieee80211_free_node(struct ieee80211_node *ni)
2054 struct ieee80211_node_table *nt = ni->ni_table;
2057 * NB: careful about referencing the vap as it may be
2058 * gone if the last reference was held by a driver.
2059 * We know the com will always be present so it's safe
2060 * to use ni_ic below to reclaim resources.
2063 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2064 "%s %p<%s> in %s table\n", __func__, ni,
2065 ether_sprintf(ni->ni_macaddr),
2066 nt != NULL ? nt->nt_name : "<gone>");
2068 if (ni->ni_associd != 0) {
2069 struct ieee80211vap *vap = ni->ni_vap;
2070 if (vap->iv_aid_bitmap != NULL)
2071 IEEE80211_AID_CLR(vap, ni->ni_associd);
2074 ieee80211_del_node_nt(nt, ni);
2075 ni->ni_ic->ic_node_free(ni);
2079 * Clear any entry in the unicast key mapping table.
2082 node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2084 ieee80211_keyix keyix;
2086 keyix = ni->ni_ucastkey.wk_rxkeyix;
2087 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
2088 nt->nt_keyixmap[keyix] == ni) {
2089 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2090 "%s: %p<%s> clear key map entry %u\n",
2091 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
2092 nt->nt_keyixmap[keyix] = NULL;
2093 ieee80211_node_decref(ni);
2101 #ifdef IEEE80211_DEBUG_REFCNT
2102 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
2104 ieee80211_free_node(struct ieee80211_node *ni)
2107 struct ieee80211_node_table *nt = ni->ni_table;
2109 #ifdef IEEE80211_DEBUG_REFCNT
2110 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2111 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
2112 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
2115 IEEE80211_NODE_LOCK(nt);
2116 if (ieee80211_node_dectestref(ni)) {
2118 * Last reference, reclaim state.
2120 _ieee80211_free_node(ni);
2121 } else if (ieee80211_node_refcnt(ni) == 1)
2122 if (node_clear_keyixmap(nt, ni))
2123 _ieee80211_free_node(ni);
2124 IEEE80211_NODE_UNLOCK(nt);
2126 if (ieee80211_node_dectestref(ni))
2127 _ieee80211_free_node(ni);
2132 * Reclaim a unicast key and clear any key cache state.
2135 ieee80211_node_delucastkey(struct ieee80211_node *ni)
2137 struct ieee80211com *ic = ni->ni_ic;
2138 struct ieee80211_node_table *nt = &ic->ic_sta;
2139 struct ieee80211_node *nikey;
2140 ieee80211_keyix keyix;
2141 int isowned, status;
2144 * NB: We must beware of LOR here; deleting the key
2145 * can cause the crypto layer to block traffic updates
2146 * which can generate a LOR against the node table lock;
2147 * grab it here and stash the key index for our use below.
2149 * Must also beware of recursion on the node table lock.
2150 * When called from node_cleanup we may already have
2151 * the node table lock held. Unfortunately there's no
2152 * way to separate out this path so we must do this
2155 isowned = IEEE80211_NODE_IS_LOCKED(nt);
2157 IEEE80211_NODE_LOCK(nt);
2159 status = 1; /* NB: success */
2160 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
2161 keyix = ni->ni_ucastkey.wk_rxkeyix;
2162 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
2163 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
2164 nikey = nt->nt_keyixmap[keyix];
2165 nt->nt_keyixmap[keyix] = NULL;
2169 IEEE80211_NODE_UNLOCK(nt);
2171 if (nikey != NULL) {
2172 KASSERT(nikey == ni,
2173 ("key map out of sync, ni %p nikey %p", ni, nikey));
2174 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2175 "%s: delete key map entry %p<%s> refcnt %d\n",
2176 __func__, ni, ether_sprintf(ni->ni_macaddr),
2177 ieee80211_node_refcnt(ni)-1);
2178 ieee80211_free_node(ni);
2184 * Reclaim a node. If this is the last reference count then
2185 * do the normal free work. Otherwise remove it from the node
2186 * table and mark it gone by clearing the back-reference.
2189 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2192 IEEE80211_NODE_LOCK_ASSERT(nt);
2194 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2195 "%s: remove %p<%s> from %s table, refcnt %d\n",
2196 __func__, ni, ether_sprintf(ni->ni_macaddr),
2197 nt->nt_name, ieee80211_node_refcnt(ni)-1);
2199 * Clear any entry in the unicast key mapping table.
2200 * We need to do it here so rx lookups don't find it
2201 * in the mapping table even if it's not in the hash
2202 * table. We cannot depend on the mapping table entry
2203 * being cleared because the node may not be free'd.
2205 (void)node_clear_keyixmap(nt, ni);
2206 if (!ieee80211_node_dectestref(ni)) {
2208 * Other references are present, just remove the
2209 * node from the table so it cannot be found. When
2210 * the references are dropped storage will be
2213 ieee80211_del_node_nt(nt, ni);
2215 _ieee80211_free_node(ni);
2219 * Node table support.
2223 ieee80211_node_table_init(struct ieee80211com *ic,
2224 struct ieee80211_node_table *nt,
2225 const char *name, int inact, int keyixmax)
2229 IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
2230 TAILQ_INIT(&nt->nt_node);
2233 nt->nt_inact_init = inact;
2234 nt->nt_keyixmax = keyixmax;
2235 if (nt->nt_keyixmax > 0) {
2236 nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
2237 keyixmax * sizeof(struct ieee80211_node *),
2239 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2240 if (nt->nt_keyixmap == NULL)
2242 "Cannot allocate key index map with %u entries\n",
2245 nt->nt_keyixmap = NULL;
2249 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
2250 struct ieee80211vap *match)
2252 struct ieee80211_node *ni, *next;
2254 IEEE80211_NODE_LOCK(nt);
2255 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
2256 if (match != NULL && ni->ni_vap != match)
2258 /* XXX can this happen? if so need's work */
2259 if (ni->ni_associd != 0) {
2260 struct ieee80211vap *vap = ni->ni_vap;
2262 if (vap->iv_auth->ia_node_leave != NULL)
2263 vap->iv_auth->ia_node_leave(ni);
2264 if (vap->iv_aid_bitmap != NULL)
2265 IEEE80211_AID_CLR(vap, ni->ni_associd);
2267 ni->ni_wdsvap = NULL; /* clear reference */
2268 node_reclaim(nt, ni);
2270 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
2272 * Make a separate pass to clear references to this vap
2273 * held by DWDS entries. They will not be matched above
2274 * because ni_vap will point to the ap vap but we still
2275 * need to clear ni_wdsvap when the WDS vap is destroyed
2278 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
2279 if (ni->ni_wdsvap == match)
2280 ni->ni_wdsvap = NULL;
2282 IEEE80211_NODE_UNLOCK(nt);
2286 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
2288 ieee80211_node_table_reset(nt, NULL);
2289 if (nt->nt_keyixmap != NULL) {
2291 /* XXX verify all entries are NULL */
2293 for (i = 0; i < nt->nt_keyixmax; i++)
2294 if (nt->nt_keyixmap[i] != NULL)
2295 printf("%s: %s[%u] still active\n", __func__,
2298 IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
2299 nt->nt_keyixmap = NULL;
2301 IEEE80211_NODE_LOCK_DESTROY(nt);
2305 timeout_stations(void *arg __unused, struct ieee80211_node *ni)
2307 struct ieee80211com *ic = ni->ni_ic;
2308 struct ieee80211vap *vap = ni->ni_vap;
2311 * Only process stations when in RUN state. This
2312 * insures, for example, that we don't timeout an
2313 * inactive station during CAC. Note that CSA state
2314 * is actually handled in ieee80211_node_timeout as
2315 * it applies to more than timeout processing.
2317 if (vap->iv_state != IEEE80211_S_RUN)
2320 * Ignore entries for which have yet to receive an
2321 * authentication frame. These are transient and
2322 * will be reclaimed when the last reference to them
2323 * goes away (when frame xmits complete).
2325 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2326 vap->iv_opmode == IEEE80211_M_STA) &&
2327 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2330 * Free fragment if not needed anymore
2331 * (last fragment older than 1s).
2332 * XXX doesn't belong here, move to node_age
2334 if (ni->ni_rxfrag[0] != NULL &&
2335 ticks > ni->ni_rxfragstamp + hz) {
2336 m_freem(ni->ni_rxfrag[0]);
2337 ni->ni_rxfrag[0] = NULL;
2339 if (ni->ni_inact > 0) {
2341 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2342 "%s: inact %u inact_reload %u nrates %u",
2343 __func__, ni->ni_inact, ni->ni_inact_reload,
2344 ni->ni_rates.rs_nrates);
2347 * Special case ourself; we may be idle for extended periods
2348 * of time and regardless reclaiming our state is wrong.
2349 * XXX run ic_node_age
2351 /* XXX before inact decrement? */
2352 if (ni == vap->iv_bss)
2354 if (ni->ni_associd != 0 ||
2355 (vap->iv_opmode == IEEE80211_M_IBSS ||
2356 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2358 * Age/drain resources held by the station.
2360 ic->ic_node_age(ni);
2362 * Probe the station before time it out. We
2363 * send a null data frame which may not be
2364 * universally supported by drivers (need it
2365 * for ps-poll support so it should be...).
2367 * XXX don't probe the station unless we've
2368 * received a frame from them (and have
2369 * some idea of the rates they are capable
2370 * of); this will get fixed more properly
2371 * soon with better handling of the rate set.
2373 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2374 (0 < ni->ni_inact &&
2375 ni->ni_inact <= vap->iv_inact_probe) &&
2376 ni->ni_rates.rs_nrates != 0) {
2378 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2380 "probe station due to inactivity");
2382 * Grab a reference so the node cannot
2383 * be reclaimed before we send the frame.
2384 * ieee80211_send_nulldata understands
2385 * we've done this and reclaims the
2386 * ref for us as needed.
2388 /* XXX fix this (not required anymore). */
2389 ieee80211_ref_node(ni);
2391 ieee80211_send_nulldata(ni);
2396 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2397 ni->ni_inact <= 0) {
2399 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2400 "station timed out due to inactivity "
2401 "(refcnt %u)", ieee80211_node_refcnt(ni));
2403 * Send a deauthenticate frame and drop the station.
2404 * This is somewhat complicated due to reference counts
2405 * and locking. At this point a station will typically
2406 * have a reference count of 2. ieee80211_node_leave
2407 * will do a "free" of the node which will drop the
2408 * reference count. But in the meantime a reference
2409 * wil be held by the deauth frame. The actual reclaim
2410 * of the node will happen either after the tx is
2411 * completed or by ieee80211_node_leave.
2413 if (ni->ni_associd != 0) {
2414 IEEE80211_SEND_MGMT(ni,
2415 IEEE80211_FC0_SUBTYPE_DEAUTH,
2416 IEEE80211_REASON_AUTH_EXPIRE);
2418 ieee80211_node_leave(ni);
2419 vap->iv_stats.is_node_timeout++;
2424 * Timeout inactive stations and do related housekeeping.
2427 ieee80211_timeout_stations(struct ieee80211com *ic)
2429 struct ieee80211_node_table *nt = &ic->ic_sta;
2431 ieee80211_iterate_nodes(nt, timeout_stations, NULL);
2435 * Aggressively reclaim resources. This should be used
2436 * only in a critical situation to reclaim mbuf resources.
2439 ieee80211_drain(struct ieee80211com *ic)
2441 struct ieee80211_node_table *nt = &ic->ic_sta;
2442 struct ieee80211vap *vap;
2443 struct ieee80211_node *ni;
2445 IEEE80211_NODE_LOCK(nt);
2446 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2448 * Ignore entries for which have yet to receive an
2449 * authentication frame. These are transient and
2450 * will be reclaimed when the last reference to them
2451 * goes away (when frame xmits complete).
2455 * Only process stations when in RUN state. This
2456 * insures, for example, that we don't timeout an
2457 * inactive station during CAC. Note that CSA state
2458 * is actually handled in ieee80211_node_timeout as
2459 * it applies to more than timeout processing.
2461 if (vap->iv_state != IEEE80211_S_RUN)
2463 /* XXX can vap be NULL? */
2464 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2465 vap->iv_opmode == IEEE80211_M_STA) &&
2466 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2470 * XXX doesn't belong here, move to node_drain
2472 if (ni->ni_rxfrag[0] != NULL) {
2473 m_freem(ni->ni_rxfrag[0]);
2474 ni->ni_rxfrag[0] = NULL;
2477 * Drain resources held by the station.
2479 ic->ic_node_drain(ni);
2481 IEEE80211_NODE_UNLOCK(nt);
2485 * Per-ieee80211com inactivity timer callback.
2488 ieee80211_node_timeout(void *arg)
2490 struct ieee80211com *ic = arg;
2493 * Defer timeout processing if a channel switch is pending.
2494 * We typically need to be mute so not doing things that
2495 * might generate frames is good to handle in one place.
2496 * Suppressing the station timeout processing may extend the
2497 * lifetime of inactive stations (by not decrementing their
2498 * idle counters) but this should be ok unless the CSA is
2499 * active for an unusually long time.
2501 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2502 ieee80211_scan_timeout(ic);
2503 ieee80211_timeout_stations(ic);
2504 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2507 ieee80211_erp_timeout(ic);
2508 ieee80211_ht_timeout(ic);
2509 ieee80211_vht_timeout(ic);
2510 IEEE80211_UNLOCK(ic);
2512 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2513 ieee80211_node_timeout, ic);
2517 * The same as ieee80211_iterate_nodes(), but for one vap only.
2520 ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt,
2521 struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg)
2523 struct ieee80211_node **ni_arr;
2524 struct ieee80211_node *ni;
2529 * Iterate over the node table and save an array of ref'ed nodes.
2531 * This is separated out from calling the actual node function so that
2532 * no LORs will occur.
2534 IEEE80211_NODE_LOCK(nt);
2535 count = nt->nt_count;
2536 size = count * sizeof(struct ieee80211_node *);
2537 ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
2538 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2539 if (ni_arr == NULL) {
2540 IEEE80211_NODE_UNLOCK(nt);
2545 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2546 if (vap != NULL && ni->ni_vap != vap)
2549 ("node array overflow (vap %p, i %d, count %d)\n",
2551 ni_arr[i] = ieee80211_ref_node(ni);
2554 IEEE80211_NODE_UNLOCK(nt);
2556 for (i = 0; i < count; i++) {
2557 if (ni_arr[i] == NULL) /* end of the list */
2559 (*f)(arg, ni_arr[i]);
2560 /* ieee80211_free_node() locks by itself */
2561 ieee80211_free_node(ni_arr[i]);
2564 IEEE80211_FREE(ni_arr, M_80211_NODE);
2570 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2571 * reference in the source.
2574 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2575 ieee80211_iter_func *f, void *arg)
2577 /* XXX no way to pass error to the caller. */
2578 (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg);
2582 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2584 printf("0x%p: mac %s refcnt %d\n", ni,
2585 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2586 printf("\tauthmode %u flags 0x%x\n",
2587 ni->ni_authmode, ni->ni_flags);
2588 printf("\tassocid 0x%x txpower %u vlan %u\n",
2589 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2590 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2591 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2592 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2593 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2594 ni->ni_rxfragstamp);
2595 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2596 node_getrssi(ni), ni->ni_noise,
2597 ni->ni_intval, ni->ni_capinfo);
2598 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2599 ether_sprintf(ni->ni_bssid),
2600 ni->ni_esslen, ni->ni_essid,
2601 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2602 printf("\tinact %u inact_reload %u txrate %u\n",
2603 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2604 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2605 ni->ni_htcap, ni->ni_htparam,
2606 ni->ni_htctlchan, ni->ni_ht2ndchan);
2607 printf("\thtopmode %x htstbc %x htchw %u\n",
2608 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2609 printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n",
2610 ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2,
2611 (int) ni->ni_vht_basicmcs);
2616 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2618 ieee80211_iterate_nodes(nt,
2619 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2623 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2625 struct ieee80211vap *vap;
2627 IEEE80211_LOCK_ASSERT(ic);
2629 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2630 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2631 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2635 ieee80211_notify_erp(struct ieee80211com *ic)
2638 ieee80211_notify_erp_locked(ic);
2639 IEEE80211_UNLOCK(ic);
2643 * Handle a station joining an 11g network.
2646 ieee80211_node_join_11g(struct ieee80211_node *ni)
2648 struct ieee80211com *ic = ni->ni_ic;
2650 IEEE80211_LOCK_ASSERT(ic);
2653 * Station isn't capable of short slot time. Bump
2654 * the count of long slot time stations and disable
2655 * use of short slot time. Note that the actual switch
2656 * over to long slot time use may not occur until the
2657 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2659 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2660 ic->ic_longslotsta++;
2661 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2662 "station needs long slot time, count %d",
2663 ic->ic_longslotsta);
2664 /* XXX vap's w/ conflicting needs won't work */
2665 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2667 * Don't force slot time when switched to turbo
2668 * mode as non-ERP stations won't be present; this
2669 * need only be done when on the normal G channel.
2671 ieee80211_set_shortslottime(ic, 0);
2675 * If the new station is not an ERP station
2676 * then bump the counter and enable protection
2679 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2681 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2682 "station is !ERP, %d non-ERP stations associated",
2685 * If station does not support short preamble
2686 * then we must enable use of Barker preamble.
2688 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2689 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2690 "%s", "station needs long preamble");
2691 ic->ic_flags |= IEEE80211_F_USEBARKER;
2692 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2695 * If protection is configured and this is the first
2696 * indication we should use protection, enable it.
2698 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2699 ic->ic_nonerpsta == 1 &&
2700 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2701 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2702 "%s: enable use of protection\n", __func__);
2703 ic->ic_flags |= IEEE80211_F_USEPROT;
2704 ieee80211_notify_erp_locked(ic);
2707 ni->ni_flags |= IEEE80211_NODE_ERP;
2711 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2713 struct ieee80211com *ic = ni->ni_ic;
2714 struct ieee80211vap *vap = ni->ni_vap;
2717 if (ni->ni_associd == 0) {
2720 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2722 * It would be good to search the bitmap
2723 * more efficiently, but this will do for now.
2725 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2726 if (!IEEE80211_AID_ISSET(vap, aid))
2729 if (aid >= vap->iv_max_aid) {
2730 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2731 ieee80211_node_leave(ni);
2734 ni->ni_associd = aid | 0xc000;
2735 ni->ni_jointime = time_uptime;
2737 IEEE80211_AID_SET(vap, ni->ni_associd);
2738 vap->iv_sta_assoc++;
2741 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2742 ieee80211_ht_node_join(ni);
2743 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2744 ieee80211_vht_node_join(ni);
2745 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2746 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2747 ieee80211_node_join_11g(ni);
2748 IEEE80211_UNLOCK(ic);
2755 * XXX VHT - should log VHT channel width, etc
2757 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2758 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2759 IEEE80211_NODE_AID(ni),
2760 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2761 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2762 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2763 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2764 /* XXX update for VHT string */
2765 ni->ni_flags & IEEE80211_NODE_HT ?
2766 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2767 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2768 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2769 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2770 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2771 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2772 ", fast-frames" : "",
2773 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2777 ieee80211_node_setuptxparms(ni);
2778 ieee80211_ratectl_node_init(ni);
2779 /* give driver a chance to setup state like ni_txrate */
2780 if (ic->ic_newassoc != NULL)
2781 ic->ic_newassoc(ni, newassoc);
2782 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2783 /* tell the authenticator about new station */
2784 if (vap->iv_auth->ia_node_join != NULL)
2785 vap->iv_auth->ia_node_join(ni);
2786 ieee80211_notify_node_join(ni,
2787 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2791 disable_protection(struct ieee80211com *ic)
2793 KASSERT(ic->ic_nonerpsta == 0 &&
2794 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2795 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2798 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2799 /* XXX verify mode? */
2800 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2801 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2802 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2804 ieee80211_notify_erp_locked(ic);
2808 * Handle a station leaving an 11g network.
2811 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2813 struct ieee80211com *ic = ni->ni_ic;
2815 IEEE80211_LOCK_ASSERT(ic);
2817 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2818 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2819 ic->ic_bsschan->ic_flags));
2822 * If a long slot station do the slot time bookkeeping.
2824 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2825 KASSERT(ic->ic_longslotsta > 0,
2826 ("bogus long slot station count %d", ic->ic_longslotsta));
2827 ic->ic_longslotsta--;
2828 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2829 "long slot time station leaves, count now %d",
2830 ic->ic_longslotsta);
2831 if (ic->ic_longslotsta == 0) {
2833 * Re-enable use of short slot time if supported
2834 * and not operating in IBSS mode (per spec).
2836 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2837 ic->ic_opmode != IEEE80211_M_IBSS) {
2838 IEEE80211_DPRINTF(ni->ni_vap,
2839 IEEE80211_MSG_ASSOC,
2840 "%s: re-enable use of short slot time\n",
2842 ieee80211_set_shortslottime(ic, 1);
2847 * If a non-ERP station do the protection-related bookkeeping.
2849 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2850 KASSERT(ic->ic_nonerpsta > 0,
2851 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2853 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2854 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2855 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2856 " (non-ERP sta present)" : "");
2857 if (ic->ic_nonerpsta == 0 &&
2858 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2859 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2860 "%s: disable use of protection\n", __func__);
2861 disable_protection(ic);
2867 * Time out presence of an overlapping bss with non-ERP
2868 * stations. When operating in hostap mode we listen for
2869 * beacons from other stations and if we identify a non-ERP
2870 * station is present we enable protection. To identify
2871 * when all non-ERP stations are gone we time out this
2875 ieee80211_erp_timeout(struct ieee80211com *ic)
2878 IEEE80211_LOCK_ASSERT(ic);
2880 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2881 ieee80211_time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2883 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2884 "%s", "age out non-ERP sta present on channel");
2886 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2887 if (ic->ic_nonerpsta == 0)
2888 disable_protection(ic);
2893 * Handle bookkeeping for station deauthentication/disassociation
2894 * when operating as an ap.
2897 ieee80211_node_leave(struct ieee80211_node *ni)
2899 struct ieee80211com *ic = ni->ni_ic;
2900 struct ieee80211vap *vap = ni->ni_vap;
2901 struct ieee80211_node_table *nt = ni->ni_table;
2903 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2904 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2906 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2907 ("unexpected operating mode %u", vap->iv_opmode));
2909 * If node wasn't previously associated all
2910 * we need to do is reclaim the reference.
2912 /* XXX ibss mode bypasses 11g and notification */
2913 if (ni->ni_associd == 0)
2916 * Tell the authenticator the station is leaving.
2917 * Note that we must do this before yanking the
2918 * association id as the authenticator uses the
2919 * associd to locate it's state block.
2921 if (vap->iv_auth->ia_node_leave != NULL)
2922 vap->iv_auth->ia_node_leave(ni);
2925 IEEE80211_AID_CLR(vap, ni->ni_associd);
2926 vap->iv_sta_assoc--;
2929 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2930 ieee80211_vht_node_leave(ni);
2931 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2932 ieee80211_ht_node_leave(ni);
2933 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2934 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2935 ieee80211_node_leave_11g(ni);
2936 IEEE80211_UNLOCK(ic);
2938 * Cleanup station state. In particular clear various
2939 * state that might otherwise be reused if the node
2940 * is reused before the reference count goes to zero
2941 * (and memory is reclaimed).
2943 ieee80211_sta_leave(ni);
2946 * Remove the node from any table it's recorded in and
2947 * drop the caller's reference. Removal from the table
2948 * is important to insure the node is not reprocessed
2952 IEEE80211_NODE_LOCK(nt);
2953 node_reclaim(nt, ni);
2954 IEEE80211_NODE_UNLOCK(nt);
2956 ieee80211_free_node(ni);
2961 uint32_t rssi_total;
2965 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2967 struct rssiinfo *info = arg;
2968 struct ieee80211vap *vap = ni->ni_vap;
2971 /* only associated stations */
2972 if (ni->ni_associd == 0)
2974 rssi = vap->iv_ic->ic_node_getrssi(ni);
2976 info->rssi_samples++;
2977 info->rssi_total += rssi;
2982 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2984 struct rssiinfo *info = arg;
2985 struct ieee80211vap *vap = ni->ni_vap;
2988 /* only neighbors */
2989 /* XXX check bssid */
2990 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2992 rssi = vap->iv_ic->ic_node_getrssi(ni);
2994 info->rssi_samples++;
2995 info->rssi_total += rssi;
2999 #ifdef IEEE80211_SUPPORT_MESH
3001 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
3003 struct rssiinfo *info = arg;
3004 struct ieee80211vap *vap = ni->ni_vap;
3007 /* only neighbors that peered successfully */
3008 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
3010 rssi = vap->iv_ic->ic_node_getrssi(ni);
3012 info->rssi_samples++;
3013 info->rssi_total += rssi;
3016 #endif /* IEEE80211_SUPPORT_MESH */
3019 ieee80211_getrssi(struct ieee80211vap *vap)
3021 #define NZ(x) ((x) == 0 ? 1 : (x))
3022 struct ieee80211com *ic = vap->iv_ic;
3023 struct rssiinfo info;
3025 info.rssi_total = 0;
3026 info.rssi_samples = 0;
3027 switch (vap->iv_opmode) {
3028 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
3029 case IEEE80211_M_AHDEMO: /* average of all neighbors */
3030 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi,
3033 case IEEE80211_M_HOSTAP: /* average of all associated stations */
3034 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi,
3037 #ifdef IEEE80211_SUPPORT_MESH
3038 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
3039 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi,
3043 case IEEE80211_M_MONITOR: /* XXX */
3044 case IEEE80211_M_STA: /* use stats from associated ap */
3046 if (vap->iv_bss != NULL)
3047 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
3048 info.rssi_samples = 1;
3051 return info.rssi_total / NZ(info.rssi_samples);
3056 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
3059 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
3061 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
3062 /* for non-station mode return avg'd rssi accounting */
3063 if (vap->iv_opmode != IEEE80211_M_STA)
3064 *rssi = ieee80211_getrssi(vap);