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_drain(&ic->ic_stageq);
141 ieee80211_ageq_cleanup(&ic->ic_stageq);
145 ieee80211_node_vattach(struct ieee80211vap *vap)
147 /* NB: driver can override */
148 vap->iv_max_aid = IEEE80211_AID_DEF;
150 /* default station inactivity timer setings */
151 vap->iv_inact_init = IEEE80211_INACT_INIT;
152 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
153 vap->iv_inact_run = IEEE80211_INACT_RUN;
154 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
156 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
157 "%s: init %u auth %u run %u probe %u\n", __func__,
158 vap->iv_inact_init, vap->iv_inact_auth,
159 vap->iv_inact_run, vap->iv_inact_probe);
163 ieee80211_node_latevattach(struct ieee80211vap *vap)
165 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
166 /* XXX should we allow max aid to be zero? */
167 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
168 vap->iv_max_aid = IEEE80211_AID_MIN;
169 if_printf(vap->iv_ifp,
170 "WARNING: max aid too small, changed to %d\n",
173 vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC(
174 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
176 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
177 if (vap->iv_aid_bitmap == NULL) {
178 /* XXX no way to recover */
179 printf("%s: no memory for AID bitmap, max aid %d!\n",
180 __func__, vap->iv_max_aid);
185 ieee80211_reset_bss(vap);
187 vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
191 ieee80211_node_vdetach(struct ieee80211vap *vap)
193 struct ieee80211com *ic = vap->iv_ic;
195 ieee80211_node_table_reset(&ic->ic_sta, vap);
196 if (vap->iv_bss != NULL) {
197 ieee80211_free_node(vap->iv_bss);
200 if (vap->iv_aid_bitmap != NULL) {
201 IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE);
202 vap->iv_aid_bitmap = NULL;
207 * Port authorize/unauthorize interfaces for use by an authenticator.
211 ieee80211_node_authorize(struct ieee80211_node *ni)
213 struct ieee80211vap *vap = ni->ni_vap;
215 ni->ni_flags |= IEEE80211_NODE_AUTH;
216 ni->ni_inact_reload = vap->iv_inact_run;
217 ni->ni_inact = ni->ni_inact_reload;
219 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
220 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
224 ieee80211_node_unauthorize(struct ieee80211_node *ni)
226 struct ieee80211vap *vap = ni->ni_vap;
228 ni->ni_flags &= ~IEEE80211_NODE_AUTH;
229 ni->ni_inact_reload = vap->iv_inact_auth;
230 if (ni->ni_inact > ni->ni_inact_reload)
231 ni->ni_inact = ni->ni_inact_reload;
233 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
234 "%s: inact_reload %u inact %u", __func__,
235 ni->ni_inact_reload, ni->ni_inact);
239 * Fix tx parameters for a node according to ``association state''.
242 ieee80211_node_setuptxparms(struct ieee80211_node *ni)
244 struct ieee80211vap *vap = ni->ni_vap;
245 enum ieee80211_phymode mode;
247 if (ni->ni_flags & IEEE80211_NODE_VHT) {
248 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
249 mode = IEEE80211_MODE_VHT_5GHZ;
251 mode = IEEE80211_MODE_VHT_2GHZ;
252 } else if (ni->ni_flags & IEEE80211_NODE_HT) {
253 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
254 mode = IEEE80211_MODE_11NA;
256 mode = IEEE80211_MODE_11NG;
257 } else { /* legacy rate handling */
258 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
259 mode = IEEE80211_MODE_STURBO_A;
260 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
261 mode = IEEE80211_MODE_HALF;
262 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
263 mode = IEEE80211_MODE_QUARTER;
264 /* NB: 108A should be handled as 11a */
265 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
266 mode = IEEE80211_MODE_11A;
267 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
268 (ni->ni_flags & IEEE80211_NODE_ERP))
269 mode = IEEE80211_MODE_11G;
271 mode = IEEE80211_MODE_11B;
273 ni->ni_txparms = &vap->iv_txparms[mode];
277 * Set/change the channel. The rate set is also updated as
278 * to insure a consistent view by drivers.
279 * XXX should be private but hostap needs it to deal with CSA
282 ieee80211_node_set_chan(struct ieee80211_node *ni,
283 struct ieee80211_channel *chan)
285 struct ieee80211com *ic = ni->ni_ic;
286 struct ieee80211vap *vap = ni->ni_vap;
287 enum ieee80211_phymode mode;
289 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
292 mode = ieee80211_chan2mode(chan);
293 if (IEEE80211_IS_CHAN_HT(chan)) {
295 * We must install the legacy rate est in ni_rates and the
296 * HT rate set in ni_htrates.
298 ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
300 * Setup bss tx parameters based on operating mode. We
301 * use legacy rates when operating in a mixed HT+non-HT bss
302 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
304 if (mode == IEEE80211_MODE_11NA &&
305 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
306 mode = IEEE80211_MODE_11A;
307 else if (mode == IEEE80211_MODE_11NG &&
308 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
309 mode = IEEE80211_MODE_11G;
310 if (mode == IEEE80211_MODE_11G &&
311 (vap->iv_flags & IEEE80211_F_PUREG) == 0)
312 mode = IEEE80211_MODE_11B;
314 ni->ni_txparms = &vap->iv_txparms[mode];
315 ni->ni_rates = *ieee80211_get_suprates(ic, chan);
319 copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
321 /* propagate useful state */
322 nbss->ni_authmode = obss->ni_authmode;
323 nbss->ni_txpower = obss->ni_txpower;
324 nbss->ni_vlan = obss->ni_vlan;
325 /* XXX statistics? */
326 /* XXX legacy WDS bssid? */
330 ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
332 struct ieee80211com *ic = vap->iv_ic;
333 struct ieee80211_node *ni;
335 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
336 "%s: creating %s on channel %u%c flags 0x%08x\n", __func__,
337 ieee80211_opmode_name[vap->iv_opmode],
338 ieee80211_chan2ieee(ic, chan),
339 ieee80211_channel_type_char(chan),
342 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
347 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
348 ni->ni_esslen = vap->iv_des_ssid[0].len;
349 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
350 if (vap->iv_bss != NULL)
351 copy_bss(ni, vap->iv_bss);
352 ni->ni_intval = ic->ic_bintval;
353 if (vap->iv_flags & IEEE80211_F_PRIVACY)
354 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
355 if (ic->ic_phytype == IEEE80211_T_FH) {
356 ni->ni_fhdwell = 200; /* XXX */
359 if (vap->iv_opmode == IEEE80211_M_IBSS) {
360 ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
361 if (vap->iv_flags & IEEE80211_F_DESBSSID)
362 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
364 get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
365 /* clear group bit, add local bit */
366 ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
368 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
369 if (vap->iv_flags & IEEE80211_F_DESBSSID)
370 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
372 #ifdef IEEE80211_SUPPORT_TDMA
373 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
375 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
376 #ifdef IEEE80211_SUPPORT_MESH
377 } else if (vap->iv_opmode == IEEE80211_M_MBSS) {
378 ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
379 memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
383 * Fix the channel and related attributes.
385 /* clear DFS CAC state on previous channel */
386 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
387 ic->ic_bsschan->ic_freq != chan->ic_freq &&
388 IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
389 ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
390 ic->ic_bsschan = chan;
391 ieee80211_node_set_chan(ni, chan);
392 ic->ic_curmode = ieee80211_chan2mode(chan);
394 * Do mode-specific setup.
396 if (IEEE80211_IS_CHAN_FULL(chan)) {
397 if (IEEE80211_IS_CHAN_ANYG(chan)) {
399 * Use a mixed 11b/11g basic rate set.
401 ieee80211_setbasicrates(&ni->ni_rates,
403 if (vap->iv_flags & IEEE80211_F_PUREG) {
405 * Also mark OFDM rates basic so 11b
406 * stations do not join (WiFi compliance).
408 ieee80211_addbasicrates(&ni->ni_rates,
411 } else if (IEEE80211_IS_CHAN_B(chan)) {
413 * Force pure 11b rate set.
415 ieee80211_setbasicrates(&ni->ni_rates,
420 /* XXX TODO: other bits and pieces - eg fast-frames? */
422 /* If we're an 11n channel then initialise the 11n bits */
423 if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
425 ieee80211_ht_node_init(ni);
426 ieee80211_vht_node_init(ni);
427 } else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
429 ieee80211_ht_node_init(ni);
432 (void) ieee80211_sta_join1(ieee80211_ref_node(ni));
436 * Reset bss state on transition to the INIT state.
437 * Clear any stations from the table (they have been
438 * deauth'd) and reset the bss node (clears key, rate
442 ieee80211_reset_bss(struct ieee80211vap *vap)
444 struct ieee80211com *ic = vap->iv_ic;
445 struct ieee80211_node *ni, *obss;
447 ieee80211_node_table_reset(&ic->ic_sta, vap);
448 /* XXX multi-bss: wrong */
449 ieee80211_reset_erp(ic);
451 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
452 KASSERT(ni != NULL, ("unable to setup initial BSS node"));
454 vap->iv_bss = ieee80211_ref_node(ni);
457 ni->ni_intval = ic->ic_bintval;
458 ieee80211_free_node(obss);
460 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
464 match_ssid(const struct ieee80211_node *ni,
465 int nssid, const struct ieee80211_scan_ssid ssids[])
469 for (i = 0; i < nssid; i++) {
470 if (ni->ni_esslen == ssids[i].len &&
471 memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
478 * Test a node for suitability/compatibility.
481 check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
483 struct ieee80211com *ic = ni->ni_ic;
486 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
488 if (vap->iv_opmode == IEEE80211_M_IBSS) {
489 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
492 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
495 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
496 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
499 /* XXX does this mean privacy is supported or required? */
500 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
503 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
504 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
505 if (rate & IEEE80211_RATE_BASIC)
507 if (vap->iv_des_nssid != 0 &&
508 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
510 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
511 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
516 #ifdef IEEE80211_DEBUG
518 * Display node suitability/compatibility.
521 check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
523 struct ieee80211com *ic = ni->ni_ic;
528 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
530 if (vap->iv_opmode == IEEE80211_M_IBSS) {
531 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
534 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
537 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
538 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
541 /* XXX does this mean privacy is supported or required? */
542 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
545 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
546 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
547 if (rate & IEEE80211_RATE_BASIC)
549 if (vap->iv_des_nssid != 0 &&
550 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
552 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
553 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
556 printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
557 printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
559 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
560 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
561 fail & 0x08 ? '!' : ' ');
563 (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
564 (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
566 fail & 0x02 ? '!' : ' ');
568 (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
569 fail & 0x04 ? '!' : ' ');
570 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
571 printf("%s\n", fail & 0x10 ? "!" : "");
573 #endif /* IEEE80211_DEBUG */
577 ieee80211_ibss_merge_check(struct ieee80211_node *ni)
579 struct ieee80211vap *vap = ni->ni_vap;
581 if (ni == vap->iv_bss ||
582 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
583 /* unchanged, nothing to do */
587 if (!check_bss(vap, ni)) {
588 /* capabilities mismatch */
589 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
590 "%s: merge failed, capabilities mismatch\n", __func__);
591 #ifdef IEEE80211_DEBUG
592 if (ieee80211_msg_assoc(vap))
593 check_bss_debug(vap, ni);
595 vap->iv_stats.is_ibss_capmismatch++;
603 * Check if the given node should populate the node table.
605 * We need to be in "see all beacons for all ssids" mode in order
606 * to do IBSS merges, however this means we will populate nodes for
607 * /all/ IBSS SSIDs, versus just the one we care about.
609 * So this check ensures the node can actually belong to our IBSS
610 * configuration. For now it simply checks the SSID.
613 ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
614 const struct ieee80211_scanparams *scan)
616 struct ieee80211vap *vap = ni->ni_vap;
620 * If we have no SSID and no scan SSID, return OK.
622 if (vap->iv_des_nssid == 0 && scan->ssid == NULL)
626 * If we have one of (SSID, scan SSID) then return error.
628 if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL))
632 * Double-check - we need scan SSID.
634 if (scan->ssid == NULL)
638 * Check if the scan SSID matches the SSID list for the VAP.
640 for (i = 0; i < vap->iv_des_nssid; i++) {
642 /* Sanity length check */
643 if (vap->iv_des_ssid[i].len != scan->ssid[1])
646 /* Note: SSID in the scan entry is the IE format */
647 if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2,
648 vap->iv_des_ssid[i].len) == 0)
659 * Handle 802.11 ad hoc network merge. The
660 * convention, set by the Wireless Ethernet Compatibility Alliance
661 * (WECA), is that an 802.11 station will change its BSSID to match
662 * the "oldest" 802.11 ad hoc network, on the same channel, that
663 * has the station's desired SSID. The "oldest" 802.11 network
664 * sends beacons with the greatest TSF timestamp.
666 * The caller is assumed to validate TSF's before attempting a merge.
668 * Return !0 if the BSSID changed, 0 otherwise.
671 ieee80211_ibss_merge(struct ieee80211_node *ni)
673 #ifdef IEEE80211_DEBUG
674 struct ieee80211vap *vap = ni->ni_vap;
675 struct ieee80211com *ic = ni->ni_ic;
678 if (! ieee80211_ibss_merge_check(ni))
681 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
682 "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
683 ether_sprintf(ni->ni_bssid),
684 ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
685 ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
686 ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : ""
688 return ieee80211_sta_join1(ieee80211_ref_node(ni));
692 * Calculate HT channel promotion flags for all vaps.
693 * This assumes ni_chan have been setup for each vap.
696 gethtadjustflags(struct ieee80211com *ic)
698 struct ieee80211vap *vap;
703 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
704 if (vap->iv_state < IEEE80211_S_RUN)
706 switch (vap->iv_opmode) {
707 case IEEE80211_M_WDS:
708 case IEEE80211_M_STA:
709 case IEEE80211_M_AHDEMO:
710 case IEEE80211_M_HOSTAP:
711 case IEEE80211_M_IBSS:
712 case IEEE80211_M_MBSS:
713 flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
723 * Calculate VHT channel promotion flags for all vaps.
724 * This assumes ni_chan have been setup for each vap.
727 getvhtadjustflags(struct ieee80211com *ic)
729 struct ieee80211vap *vap;
734 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
735 if (vap->iv_state < IEEE80211_S_RUN)
737 switch (vap->iv_opmode) {
738 case IEEE80211_M_WDS:
739 case IEEE80211_M_STA:
740 case IEEE80211_M_AHDEMO:
741 case IEEE80211_M_HOSTAP:
742 case IEEE80211_M_IBSS:
743 case IEEE80211_M_MBSS:
744 flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan);
754 * Check if the current channel needs to change based on whether
755 * any vap's are using HT20/HT40. This is used to sync the state
756 * of ic_curchan after a channel width change on a running vap.
758 * Same applies for VHT.
761 ieee80211_sync_curchan(struct ieee80211com *ic)
763 struct ieee80211_channel *c;
765 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
766 c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic));
768 if (c != ic->ic_curchan) {
770 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
771 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
772 IEEE80211_UNLOCK(ic);
773 ic->ic_set_channel(ic);
774 ieee80211_radiotap_chan_change(ic);
780 * Setup the current channel. The request channel may be
781 * promoted if other vap's are operating with HT20/HT40.
784 ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
786 if (ic->ic_htcaps & IEEE80211_HTC_HT) {
787 int flags = gethtadjustflags(ic);
789 * Check for channel promotion required to support the
790 * set of running vap's. This assumes we are called
791 * after ni_chan is setup for each vap.
794 /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
795 if (flags > ieee80211_htchanflags(c))
796 c = ieee80211_ht_adjust_channel(ic, c, flags);
800 * VHT promotion - this will at least promote to VHT20/40
801 * based on what HT has done; it may further promote the
802 * channel to VHT80 or above.
804 if (ic->ic_vhtcaps != 0) {
805 int flags = getvhtadjustflags(ic);
806 if (flags > ieee80211_vhtchanflags(c))
807 c = ieee80211_vht_adjust_channel(ic, c, flags);
810 ic->ic_bsschan = ic->ic_curchan = c;
811 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
812 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
816 * Change the current channel. The channel change is guaranteed to have
817 * happened before the next state change.
820 ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
822 ieee80211_setupcurchan(ic, c);
823 ieee80211_runtask(ic, &ic->ic_chan_task);
827 ieee80211_update_chw(struct ieee80211com *ic)
830 ieee80211_setupcurchan(ic, ic->ic_curchan);
831 ieee80211_runtask(ic, &ic->ic_chw_task);
835 * Join the specified IBSS/BSS network. The node is assumed to
836 * be passed in with a held reference.
839 ieee80211_sta_join1(struct ieee80211_node *selbs)
841 struct ieee80211vap *vap = selbs->ni_vap;
842 struct ieee80211com *ic = selbs->ni_ic;
843 struct ieee80211_node *obss;
847 * Committed to selbs, setup state.
851 * Check if old+new node have the same address in which
852 * case we can reassociate when operating in sta mode.
854 canreassoc = (obss != NULL &&
855 vap->iv_state == IEEE80211_S_RUN &&
856 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
857 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
859 struct ieee80211_node_table *nt = obss->ni_table;
861 copy_bss(selbs, obss);
862 ieee80211_node_decref(obss); /* iv_bss reference */
864 IEEE80211_NODE_LOCK(nt);
865 node_reclaim(nt, obss); /* station table reference */
866 IEEE80211_NODE_UNLOCK(nt);
868 obss = NULL; /* NB: guard against later use */
872 * Delete unusable rates; we've already checked
873 * that the negotiated rate set is acceptable.
875 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
876 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
878 ieee80211_setcurchan(ic, selbs->ni_chan);
880 * Set the erp state (mostly the slot time) to deal with
881 * the auto-select case; this should be redundant if the
884 ieee80211_reset_erp(ic);
885 ieee80211_wme_initparams(vap);
887 if (vap->iv_opmode == IEEE80211_M_STA) {
890 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
893 * Act as if we received a DEAUTH frame in case we
894 * are invoked from the RUN state. This will cause
895 * us to try to re-authenticate if we are operating
898 ieee80211_new_state(vap, IEEE80211_S_AUTH,
899 IEEE80211_FC0_SUBTYPE_DEAUTH);
902 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
907 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
908 const struct ieee80211_scan_entry *se)
910 struct ieee80211com *ic = vap->iv_ic;
911 struct ieee80211_node *ni;
914 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
921 * Expand scan state into node's format.
922 * XXX may not need all this stuff
924 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
925 ni->ni_esslen = se->se_ssid[1];
926 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
927 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
928 ni->ni_intval = se->se_intval;
929 ni->ni_capinfo = se->se_capinfo;
931 ni->ni_timoff = se->se_timoff;
932 ni->ni_fhdwell = se->se_fhdwell;
933 ni->ni_fhindex = se->se_fhindex;
934 ni->ni_erp = se->se_erp;
935 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
936 ni->ni_noise = se->se_noise;
937 if (vap->iv_opmode == IEEE80211_M_STA) {
938 /* NB: only infrastructure mode requires an associd */
939 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
942 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
943 ieee80211_ies_expand(&ni->ni_ies);
944 #ifdef IEEE80211_SUPPORT_SUPERG
945 if (ni->ni_ies.ath_ie != NULL)
946 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
948 if (ni->ni_ies.htcap_ie != NULL)
949 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
950 if (ni->ni_ies.htinfo_ie != NULL)
951 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
952 #ifdef IEEE80211_SUPPORT_MESH
953 if (ni->ni_ies.meshid_ie != NULL)
954 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
956 #ifdef IEEE80211_SUPPORT_TDMA
957 if (ni->ni_ies.tdma_ie != NULL)
958 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
960 if (ni->ni_ies.vhtcap_ie != NULL)
961 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
962 if (ni->ni_ies.vhtopmode_ie != NULL)
963 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
965 /* XXX parse BSSLOAD IE */
966 /* XXX parse TXPWRENV IE */
967 /* XXX parse APCHANREP IE */
970 vap->iv_dtim_period = se->se_dtimperiod;
971 vap->iv_dtim_count = 0;
973 /* NB: must be after ni_chan is setup */
974 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
976 if (ieee80211_iserp_rateset(&ni->ni_rates))
977 ni->ni_flags |= IEEE80211_NODE_ERP;
980 * Setup HT state for this node if it's available, otherwise
981 * non-STA modes won't pick this state up.
983 * For IBSS and related modes that don't go through an
984 * association request/response, the only appropriate place
985 * to setup the HT state is here.
987 if (ni->ni_ies.htinfo_ie != NULL &&
988 ni->ni_ies.htcap_ie != NULL &&
989 vap->iv_flags_ht & IEEE80211_FHT_HT) {
990 ieee80211_ht_node_init(ni);
991 ieee80211_ht_updateparams(ni,
993 ni->ni_ies.htinfo_ie);
998 * Setup VHT state for this node if it's available.
1001 * For now, don't allow 2GHz VHT operation.
1003 if (ni->ni_ies.vhtopmode_ie != NULL &&
1004 ni->ni_ies.vhtcap_ie != NULL &&
1005 vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1006 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1007 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1012 ieee80211_vht_node_init(ni);
1013 ieee80211_vht_updateparams(ni,
1014 ni->ni_ies.vhtcap_ie,
1015 ni->ni_ies.vhtopmode_ie);
1016 ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie,
1017 ni->ni_ies.vhtopmode_ie);
1022 /* Finally do the node channel change */
1024 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1025 ni->ni_ies.htinfo_ie);
1026 ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
1027 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1028 ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
1031 /* XXX else check for ath FF? */
1032 /* XXX QoS? Difficult given that WME config is specific to a master */
1034 ieee80211_node_setuptxparms(ni);
1035 ieee80211_ratectl_node_init(ni);
1037 return ieee80211_sta_join1(ieee80211_ref_node(ni));
1041 * Leave the specified IBSS/BSS network. The node is assumed to
1042 * be passed in with a held reference.
1045 ieee80211_sta_leave(struct ieee80211_node *ni)
1047 struct ieee80211com *ic = ni->ni_ic;
1049 ic->ic_node_cleanup(ni);
1050 ieee80211_notify_node_leave(ni);
1054 * Send a deauthenticate frame and drop the station.
1057 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
1059 /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
1060 ieee80211_ref_node(ni);
1061 if (ni->ni_associd != 0)
1062 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
1063 ieee80211_node_leave(ni);
1064 ieee80211_free_node(ni);
1067 static struct ieee80211_node *
1068 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1070 struct ieee80211_node *ni;
1072 ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node),
1073 M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1078 * Initialize an ie blob with the specified data. If previous
1079 * data exists re-use the data block. As a side effect we clear
1080 * all references to specific ie's; the caller is required to
1084 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
1086 /* NB: assumes data+len are the last fields */
1087 memset(ies, 0, offsetof(struct ieee80211_ies, data));
1088 if (ies->data != NULL && ies->len != len) {
1089 /* data size changed */
1090 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1093 if (ies->data == NULL) {
1094 ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
1095 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1096 if (ies->data == NULL) {
1098 /* NB: pointers have already been zero'd above */
1102 memcpy(ies->data, data, len);
1108 * Reclaim storage for an ie blob.
1111 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
1113 if (ies->data != NULL)
1114 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1118 * Expand an ie blob data contents and to fillin individual
1119 * ie pointers. The data blob is assumed to be well-formed;
1120 * we don't do any validity checking of ie lengths.
1123 ieee80211_ies_expand(struct ieee80211_ies *ies)
1132 case IEEE80211_ELEMID_VENDOR:
1135 else if (iswmeoui(ie))
1137 #ifdef IEEE80211_SUPPORT_SUPERG
1138 else if (isatherosoui(ie))
1141 #ifdef IEEE80211_SUPPORT_TDMA
1142 else if (istdmaoui(ie))
1146 case IEEE80211_ELEMID_RSN:
1149 case IEEE80211_ELEMID_HTCAP:
1152 case IEEE80211_ELEMID_HTINFO:
1153 ies->htinfo_ie = ie;
1155 #ifdef IEEE80211_SUPPORT_MESH
1156 case IEEE80211_ELEMID_MESHID:
1157 ies->meshid_ie = ie;
1160 case IEEE80211_ELEMID_VHT_CAP:
1161 ies->vhtcap_ie = ie;
1163 case IEEE80211_ELEMID_VHT_OPMODE:
1164 ies->vhtopmode_ie = ie;
1166 case IEEE80211_ELEMID_VHT_PWR_ENV:
1167 ies->vhtpwrenv_ie = ie;
1169 case IEEE80211_ELEMID_BSSLOAD:
1170 ies->bssload_ie = ie;
1172 case IEEE80211_ELEMID_APCHANREP:
1173 ies->apchanrep_ie = ie;
1182 * Reclaim any resources in a node and reset any critical
1183 * state. Typically nodes are free'd immediately after,
1184 * but in some cases the storage may be reused so we need
1185 * to insure consistent state (should probably fix that).
1188 node_cleanup(struct ieee80211_node *ni)
1190 struct ieee80211vap *vap = ni->ni_vap;
1191 struct ieee80211com *ic = ni->ni_ic;
1194 /* NB: preserve ni_table */
1195 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
1196 if (vap->iv_opmode != IEEE80211_M_STA)
1198 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
1199 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
1200 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1203 * Cleanup any VHT and HT-related state.
1205 if (ni->ni_flags & IEEE80211_NODE_VHT)
1206 ieee80211_vht_node_cleanup(ni);
1207 if (ni->ni_flags & IEEE80211_NODE_HT)
1208 ieee80211_ht_node_cleanup(ni);
1209 #ifdef IEEE80211_SUPPORT_SUPERG
1210 /* Always do FF node cleanup; for A-MSDU */
1211 ieee80211_ff_node_cleanup(ni);
1213 #ifdef IEEE80211_SUPPORT_MESH
1215 * Cleanup any mesh-related state.
1217 if (vap->iv_opmode == IEEE80211_M_MBSS)
1218 ieee80211_mesh_node_cleanup(ni);
1221 * Clear any staging queue entries.
1223 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1226 * Clear AREF flag that marks the authorization refcnt bump
1227 * has happened. This is probably not needed as the node
1228 * should always be removed from the table so not found but
1229 * do it just in case.
1230 * Likewise clear the ASSOCID flag as these flags are intended
1231 * to be managed in tandem.
1233 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1236 * Drain power save queue and, if needed, clear TIM.
1238 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1239 vap->iv_set_tim(ni, 0);
1242 if (ni->ni_challenge != NULL) {
1243 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1244 ni->ni_challenge = NULL;
1247 * Preserve SSID, WPA, and WME ie's so the bss node is
1248 * reusable during a re-auth/re-assoc state transition.
1249 * If we remove these data they will not be recreated
1250 * because they come from a probe-response or beacon frame
1251 * which cannot be expected prior to the association-response.
1252 * This should not be an issue when operating in other modes
1253 * as stations leaving always go through a full state transition
1254 * which will rebuild this state.
1256 * XXX does this leave us open to inheriting old state?
1258 for (i = 0; i < nitems(ni->ni_rxfrag); i++)
1259 if (ni->ni_rxfrag[i] != NULL) {
1260 m_freem(ni->ni_rxfrag[i]);
1261 ni->ni_rxfrag[i] = NULL;
1264 * Must be careful here to remove any key map entry w/o a LOR.
1266 ieee80211_node_delucastkey(ni);
1270 node_free(struct ieee80211_node *ni)
1272 struct ieee80211com *ic = ni->ni_ic;
1274 ieee80211_ratectl_node_deinit(ni);
1275 ic->ic_node_cleanup(ni);
1276 ieee80211_ies_cleanup(&ni->ni_ies);
1277 ieee80211_psq_cleanup(&ni->ni_psq);
1278 IEEE80211_FREE(ni, M_80211_NODE);
1282 node_age(struct ieee80211_node *ni)
1284 struct ieee80211vap *vap = ni->ni_vap;
1287 * Age frames on the power save queue.
1289 if (ieee80211_node_psq_age(ni) != 0 &&
1290 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1291 vap->iv_set_tim(ni, 0);
1293 * Age out HT resources (e.g. frames on the
1294 * A-MPDU reorder queues).
1296 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1297 ieee80211_ht_node_age(ni);
1301 node_getrssi(const struct ieee80211_node *ni)
1303 uint32_t avgrssi = ni->ni_avgrssi;
1306 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1308 rssi = IEEE80211_RSSI_GET(avgrssi);
1309 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1313 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1315 *rssi = node_getrssi(ni);
1316 *noise = ni->ni_noise;
1320 node_getmimoinfo(const struct ieee80211_node *ni,
1321 struct ieee80211_mimo_info *info)
1327 bzero(info, sizeof(*info));
1329 for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) {
1330 /* Note: for now, just pri20 channel info */
1331 avgrssi = ni->ni_mimo_rssi_ctl[i];
1332 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1333 info->ch[i].rssi[0] = 0;
1335 rssi = IEEE80211_RSSI_GET(avgrssi);
1336 info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1338 info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i];
1341 /* XXX ext radios? */
1347 ieee80211_add_node_nt(struct ieee80211_node_table *nt,
1348 struct ieee80211_node *ni)
1350 struct ieee80211com *ic = nt->nt_ic;
1353 IEEE80211_NODE_LOCK_ASSERT(nt);
1355 hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr);
1356 (void) ic; /* XXX IEEE80211_NODE_HASH */
1357 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1358 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1364 ieee80211_del_node_nt(struct ieee80211_node_table *nt,
1365 struct ieee80211_node *ni)
1368 IEEE80211_NODE_LOCK_ASSERT(nt);
1370 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1371 LIST_REMOVE(ni, ni_hash);
1373 KASSERT(nt->nt_count >= 0,
1374 ("nt_count is negative (%d)!\n", nt->nt_count));
1375 ni->ni_table = NULL;
1378 struct ieee80211_node *
1379 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1380 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1382 struct ieee80211com *ic = nt->nt_ic;
1383 struct ieee80211_node *ni;
1385 ni = ic->ic_node_alloc(vap, macaddr);
1387 vap->iv_stats.is_rx_nodealloc++;
1391 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1392 "%s %p<%s> in %s table\n", __func__, ni,
1393 ether_sprintf(macaddr), nt->nt_name);
1395 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1396 ieee80211_node_initref(ni); /* mark referenced */
1397 ni->ni_chan = IEEE80211_CHAN_ANYC;
1398 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1399 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1400 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1401 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1402 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1403 ni->ni_inact_reload = nt->nt_inact_init;
1404 ni->ni_inact = ni->ni_inact_reload;
1405 ni->ni_ath_defkeyix = 0x7fff;
1406 ieee80211_psq_init(&ni->ni_psq, "unknown");
1407 #ifdef IEEE80211_SUPPORT_MESH
1408 if (vap->iv_opmode == IEEE80211_M_MBSS)
1409 ieee80211_mesh_node_init(vap, ni);
1411 IEEE80211_NODE_LOCK(nt);
1412 ieee80211_add_node_nt(nt, ni);
1415 IEEE80211_NODE_UNLOCK(nt);
1417 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1418 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1424 * Craft a temporary node suitable for sending a management frame
1425 * to the specified station. We craft only as much state as we
1426 * need to do the work since the node will be immediately reclaimed
1427 * once the send completes.
1429 struct ieee80211_node *
1430 ieee80211_tmp_node(struct ieee80211vap *vap,
1431 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1433 struct ieee80211com *ic = vap->iv_ic;
1434 struct ieee80211_node *ni;
1436 ni = ic->ic_node_alloc(vap, macaddr);
1438 struct ieee80211_node *bss = vap->iv_bss;
1440 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1441 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1443 ni->ni_table = NULL; /* NB: pedantic */
1444 ni->ni_ic = ic; /* NB: needed to set channel */
1447 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1448 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1449 ieee80211_node_initref(ni); /* mark referenced */
1450 /* NB: required by ieee80211_fix_rate */
1451 ieee80211_node_set_chan(ni, bss->ni_chan);
1452 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1453 IEEE80211_KEYIX_NONE);
1454 ni->ni_txpower = bss->ni_txpower;
1455 /* XXX optimize away */
1456 ieee80211_psq_init(&ni->ni_psq, "unknown");
1458 ieee80211_ratectl_node_init(ni);
1461 vap->iv_stats.is_rx_nodealloc++;
1466 struct ieee80211_node *
1467 ieee80211_dup_bss(struct ieee80211vap *vap,
1468 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1470 struct ieee80211com *ic = vap->iv_ic;
1471 struct ieee80211_node *ni;
1473 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1475 struct ieee80211_node *bss = vap->iv_bss;
1477 * Inherit from iv_bss.
1480 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1481 ieee80211_node_set_chan(ni, bss->ni_chan);
1487 * Create a bss node for a legacy WDS vap. The far end does
1488 * not associate so we just create create a new node and
1489 * simulate an association. The caller is responsible for
1490 * installing the node as the bss node and handling any further
1491 * setup work like authorizing the port.
1493 struct ieee80211_node *
1494 ieee80211_node_create_wds(struct ieee80211vap *vap,
1495 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1497 struct ieee80211com *ic = vap->iv_ic;
1498 struct ieee80211_node *ni;
1500 /* XXX check if node already in sta table? */
1501 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1503 ni->ni_wdsvap = vap;
1504 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1506 * Inherit any manually configured settings.
1508 copy_bss(ni, vap->iv_bss);
1509 ieee80211_node_set_chan(ni, chan);
1510 /* NB: propagate ssid so available to WPA supplicant */
1511 ni->ni_esslen = vap->iv_des_ssid[0].len;
1512 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1513 /* NB: no associd for peer */
1515 * There are no management frames to use to
1516 * discover neighbor capabilities, so blindly
1517 * propagate the local configuration.
1519 if (vap->iv_flags & IEEE80211_F_WME)
1520 ni->ni_flags |= IEEE80211_NODE_QOS;
1521 #ifdef IEEE80211_SUPPORT_SUPERG
1522 if (vap->iv_flags & IEEE80211_F_FF)
1523 ni->ni_flags |= IEEE80211_NODE_FF;
1526 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1527 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1529 * Device is HT-capable and HT is enabled for
1530 * the vap; setup HT operation. On return
1531 * ni_chan will be adjusted to an HT channel.
1533 ieee80211_ht_wds_init(ni);
1534 if (vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1535 printf("%s: TODO: vht_wds_init\n", __func__);
1538 struct ieee80211_channel *c = ni->ni_chan;
1540 * Force a legacy channel to be used.
1542 c = ieee80211_find_channel(ic,
1543 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1544 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1545 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1552 struct ieee80211_node *
1553 #ifdef IEEE80211_DEBUG_REFCNT
1554 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1555 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1557 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1558 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1561 struct ieee80211_node *ni;
1564 IEEE80211_NODE_LOCK_ASSERT(nt);
1566 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1567 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1568 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1569 ieee80211_ref_node(ni); /* mark referenced */
1570 #ifdef IEEE80211_DEBUG_REFCNT
1571 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1572 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1574 ni, ether_sprintf(ni->ni_macaddr),
1575 ieee80211_node_refcnt(ni));
1583 struct ieee80211_node *
1584 #ifdef IEEE80211_DEBUG_REFCNT
1585 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1586 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1588 ieee80211_find_node(struct ieee80211_node_table *nt,
1589 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1592 struct ieee80211_node *ni;
1594 IEEE80211_NODE_LOCK(nt);
1595 ni = ieee80211_find_node_locked(nt, macaddr);
1596 IEEE80211_NODE_UNLOCK(nt);
1600 struct ieee80211_node *
1601 #ifdef IEEE80211_DEBUG_REFCNT
1602 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1603 const struct ieee80211vap *vap,
1604 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1606 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1607 const struct ieee80211vap *vap,
1608 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1611 struct ieee80211_node *ni;
1614 IEEE80211_NODE_LOCK_ASSERT(nt);
1616 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1617 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1618 if (ni->ni_vap == vap &&
1619 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1620 ieee80211_ref_node(ni); /* mark referenced */
1621 #ifdef IEEE80211_DEBUG_REFCNT
1622 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1623 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1625 ni, ether_sprintf(ni->ni_macaddr),
1626 ieee80211_node_refcnt(ni));
1634 struct ieee80211_node *
1635 #ifdef IEEE80211_DEBUG_REFCNT
1636 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1637 const struct ieee80211vap *vap,
1638 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1640 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1641 const struct ieee80211vap *vap,
1642 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1645 struct ieee80211_node *ni;
1647 IEEE80211_NODE_LOCK(nt);
1648 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1649 IEEE80211_NODE_UNLOCK(nt);
1654 * Fake up a node; this handles node discovery in adhoc mode.
1655 * Note that for the driver's benefit we we treat this like
1656 * an association so the driver has an opportunity to setup
1657 * it's private state.
1659 struct ieee80211_node *
1660 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1661 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1663 struct ieee80211_node *ni;
1665 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1666 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1667 ni = ieee80211_dup_bss(vap, macaddr);
1669 struct ieee80211com *ic = vap->iv_ic;
1671 /* XXX no rate negotiation; just dup */
1672 ni->ni_rates = vap->iv_bss->ni_rates;
1673 if (ieee80211_iserp_rateset(&ni->ni_rates))
1674 ni->ni_flags |= IEEE80211_NODE_ERP;
1675 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1677 * In adhoc demo mode there are no management
1678 * frames to use to discover neighbor capabilities,
1679 * so blindly propagate the local configuration
1680 * so we can do interesting things (e.g. use
1681 * WME to disable ACK's).
1686 if (vap->iv_flags & IEEE80211_F_WME)
1687 ni->ni_flags |= IEEE80211_NODE_QOS;
1688 #ifdef IEEE80211_SUPPORT_SUPERG
1689 if (vap->iv_flags & IEEE80211_F_FF)
1690 ni->ni_flags |= IEEE80211_NODE_FF;
1693 ieee80211_node_setuptxparms(ni);
1694 ieee80211_ratectl_node_init(ni);
1697 * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX,
1698 * not A-MPDU TX; not 11n rates, etc. We'll cycle
1699 * that after we hear that we can indeed do 11n
1700 * (either by a beacon frame or by a probe response.)
1704 * This is the first time we see the node.
1706 if (ic->ic_newassoc != NULL)
1707 ic->ic_newassoc(ni, 1);
1710 * Kick off a probe request to the given node;
1711 * we will then use the probe response to update
1712 * 11n/etc configuration state.
1714 * XXX TODO: this isn't guaranteed, and until we get
1715 * a probe response, we won't be able to actually
1716 * do anything 802.11n related to the node.
1717 * So if this does indeed work, maybe we should hold
1718 * off on sending responses until we get the probe
1719 * response, or just default to some sensible subset
1720 * of 802.11n behaviour (eg always allow aggregation
1721 * negotiation TO us, but not FROM us, etc) so we
1722 * aren't entirely busted.
1724 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1725 ieee80211_send_probereq(ni, /* node */
1726 vap->iv_myaddr, /* SA */
1727 ni->ni_macaddr, /* DA */
1728 vap->iv_bss->ni_bssid, /* BSSID */
1729 vap->iv_bss->ni_essid,
1730 vap->iv_bss->ni_esslen); /* SSID */
1733 /* XXX not right for 802.1x/WPA */
1734 ieee80211_node_authorize(ni);
1740 ieee80211_init_neighbor(struct ieee80211_node *ni,
1741 const struct ieee80211_frame *wh,
1742 const struct ieee80211_scanparams *sp)
1744 int do_ht_setup = 0, do_vht_setup = 0;
1746 ni->ni_esslen = sp->ssid[1];
1747 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1748 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1749 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1750 ni->ni_intval = sp->bintval;
1751 ni->ni_capinfo = sp->capinfo;
1752 ni->ni_chan = ni->ni_ic->ic_curchan;
1753 ni->ni_fhdwell = sp->fhdwell;
1754 ni->ni_fhindex = sp->fhindex;
1755 ni->ni_erp = sp->erp;
1756 ni->ni_timoff = sp->timoff;
1757 #ifdef IEEE80211_SUPPORT_MESH
1758 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1759 ieee80211_mesh_init_neighbor(ni, wh, sp);
1761 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1762 ieee80211_ies_expand(&ni->ni_ies);
1763 if (ni->ni_ies.wme_ie != NULL)
1764 ni->ni_flags |= IEEE80211_NODE_QOS;
1766 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1767 #ifdef IEEE80211_SUPPORT_SUPERG
1768 if (ni->ni_ies.ath_ie != NULL)
1769 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1771 if (ni->ni_ies.htcap_ie != NULL)
1772 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1773 if (ni->ni_ies.htinfo_ie != NULL)
1774 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1776 if (ni->ni_ies.vhtcap_ie != NULL)
1777 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
1778 if (ni->ni_ies.vhtopmode_ie != NULL)
1779 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
1781 if ((ni->ni_ies.htcap_ie != NULL) &&
1782 (ni->ni_ies.htinfo_ie != NULL) &&
1783 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1787 if ((ni->ni_ies.vhtcap_ie != NULL) &&
1788 (ni->ni_ies.vhtopmode_ie != NULL) &&
1789 (ni->ni_vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1795 /* NB: must be after ni_chan is setup */
1796 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1797 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1798 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1801 * If the neighbor is HT compatible, flip that on.
1804 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1805 "%s: doing HT setup\n", __func__);
1806 ieee80211_ht_node_init(ni);
1807 ieee80211_ht_updateparams(ni,
1808 ni->ni_ies.htcap_ie,
1809 ni->ni_ies.htinfo_ie);
1812 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1813 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1818 ieee80211_vht_node_init(ni);
1819 ieee80211_vht_updateparams(ni,
1820 ni->ni_ies.vhtcap_ie,
1821 ni->ni_ies.vhtopmode_ie);
1822 ieee80211_setup_vht_rates(ni,
1823 ni->ni_ies.vhtcap_ie,
1824 ni->ni_ies.vhtopmode_ie);
1829 * Finally do the channel upgrade/change based
1830 * on the HT/VHT configuration.
1832 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1833 ni->ni_ies.htinfo_ie);
1834 ieee80211_setup_htrates(ni,
1835 ni->ni_ies.htcap_ie,
1836 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1837 ieee80211_setup_basic_htrates(ni,
1838 ni->ni_ies.htinfo_ie);
1840 ieee80211_node_setuptxparms(ni);
1841 ieee80211_ratectl_node_init(ni);
1843 /* Reassociate; we're now 11n/11ac */
1845 * XXX TODO: this is the wrong thing to do -
1846 * we're calling it with isnew=1 so the ath(4)
1847 * driver reinitialises the rate tables.
1848 * This "mostly" works for ath(4), but it won't
1849 * be right for firmware devices which allocate
1852 * So, do we just create a new node and delete
1855 if (ni->ni_ic->ic_newassoc)
1856 ni->ni_ic->ic_newassoc(ni, 1);
1861 * Do node discovery in adhoc mode on receipt of a beacon
1862 * or probe response frame. Note that for the driver's
1863 * benefit we we treat this like an association so the
1864 * driver has an opportunity to setup it's private state.
1866 struct ieee80211_node *
1867 ieee80211_add_neighbor(struct ieee80211vap *vap,
1868 const struct ieee80211_frame *wh,
1869 const struct ieee80211_scanparams *sp)
1871 struct ieee80211_node *ni;
1873 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1874 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1875 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1877 struct ieee80211com *ic = vap->iv_ic;
1879 ieee80211_init_neighbor(ni, wh, sp);
1880 if (ieee80211_iserp_rateset(&ni->ni_rates))
1881 ni->ni_flags |= IEEE80211_NODE_ERP;
1882 ieee80211_node_setuptxparms(ni);
1883 ieee80211_ratectl_node_init(ni);
1884 if (ic->ic_newassoc != NULL)
1885 ic->ic_newassoc(ni, 1);
1886 /* XXX not right for 802.1x/WPA */
1887 ieee80211_node_authorize(ni);
1892 #define IS_PROBEREQ(wh) \
1893 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1894 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1895 #define IS_BCAST_PROBEREQ(wh) \
1896 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1897 ((const struct ieee80211_frame *)(wh))->i_addr3))
1899 static __inline struct ieee80211_node *
1900 _find_rxnode(struct ieee80211_node_table *nt,
1901 const struct ieee80211_frame_min *wh)
1903 if (IS_BCAST_PROBEREQ(wh))
1904 return NULL; /* spam bcast probe req to all vap's */
1905 return ieee80211_find_node_locked(nt, wh->i_addr2);
1909 * Locate the node for sender, track state, and then pass the
1910 * (referenced) node up to the 802.11 layer for its use. Note
1911 * we can return NULL if the sender is not in the table.
1913 struct ieee80211_node *
1914 #ifdef IEEE80211_DEBUG_REFCNT
1915 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1916 const struct ieee80211_frame_min *wh, const char *func, int line)
1918 ieee80211_find_rxnode(struct ieee80211com *ic,
1919 const struct ieee80211_frame_min *wh)
1922 struct ieee80211_node_table *nt;
1923 struct ieee80211_node *ni;
1926 IEEE80211_NODE_LOCK(nt);
1927 ni = _find_rxnode(nt, wh);
1928 IEEE80211_NODE_UNLOCK(nt);
1934 * Like ieee80211_find_rxnode but use the supplied h/w
1935 * key index as a hint to locate the node in the key
1936 * mapping table. If an entry is present at the key
1937 * index we return it; otherwise do a normal lookup and
1938 * update the mapping table if the station has a unicast
1939 * key assigned to it.
1941 struct ieee80211_node *
1942 #ifdef IEEE80211_DEBUG_REFCNT
1943 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1944 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1945 const char *func, int line)
1947 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1948 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1951 struct ieee80211_node_table *nt;
1952 struct ieee80211_node *ni;
1955 IEEE80211_NODE_LOCK(nt);
1956 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1957 ni = nt->nt_keyixmap[keyix];
1961 ni = _find_rxnode(nt, wh);
1962 if (ni != NULL && nt->nt_keyixmap != NULL) {
1964 * If the station has a unicast key cache slot
1965 * assigned update the key->node mapping table.
1967 keyix = ni->ni_ucastkey.wk_rxkeyix;
1968 /* XXX can keyixmap[keyix] != NULL? */
1969 if (keyix < nt->nt_keyixmax &&
1970 nt->nt_keyixmap[keyix] == NULL) {
1971 IEEE80211_DPRINTF(ni->ni_vap,
1973 "%s: add key map entry %p<%s> refcnt %d\n",
1974 __func__, ni, ether_sprintf(ni->ni_macaddr),
1975 ieee80211_node_refcnt(ni)+1);
1976 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
1980 if (IS_BCAST_PROBEREQ(wh))
1981 ni = NULL; /* spam bcast probe req to all vap's */
1983 ieee80211_ref_node(ni);
1985 IEEE80211_NODE_UNLOCK(nt);
1989 #undef IS_BCAST_PROBEREQ
1993 * Return a reference to the appropriate node for sending
1994 * a data frame. This handles node discovery in adhoc networks.
1996 struct ieee80211_node *
1997 #ifdef IEEE80211_DEBUG_REFCNT
1998 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
1999 const uint8_t macaddr[IEEE80211_ADDR_LEN],
2000 const char *func, int line)
2002 ieee80211_find_txnode(struct ieee80211vap *vap,
2003 const uint8_t macaddr[IEEE80211_ADDR_LEN])
2006 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
2007 struct ieee80211_node *ni;
2010 * The destination address should be in the node table
2011 * unless this is a multicast/broadcast frame. We can
2012 * also optimize station mode operation, all frames go
2015 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
2016 IEEE80211_NODE_LOCK(nt);
2017 if (vap->iv_opmode == IEEE80211_M_STA ||
2018 vap->iv_opmode == IEEE80211_M_WDS ||
2019 IEEE80211_IS_MULTICAST(macaddr))
2020 ni = ieee80211_ref_node(vap->iv_bss);
2022 ni = ieee80211_find_node_locked(nt, macaddr);
2023 IEEE80211_NODE_UNLOCK(nt);
2026 if (vap->iv_opmode == IEEE80211_M_IBSS ||
2027 vap->iv_opmode == IEEE80211_M_AHDEMO) {
2029 * In adhoc mode cons up a node for the destination.
2030 * Note that we need an additional reference for the
2031 * caller to be consistent with
2032 * ieee80211_find_node_locked.
2035 * XXX TODO: this doesn't fake up 11n state; we need
2036 * to find another way to get it upgraded.
2038 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
2040 (void) ieee80211_ref_node(ni);
2042 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
2043 "no node, discard frame (%s)", __func__);
2044 vap->iv_stats.is_tx_nonode++;
2051 _ieee80211_free_node(struct ieee80211_node *ni)
2053 struct ieee80211_node_table *nt = ni->ni_table;
2056 * NB: careful about referencing the vap as it may be
2057 * gone if the last reference was held by a driver.
2058 * We know the com will always be present so it's safe
2059 * to use ni_ic below to reclaim resources.
2062 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2063 "%s %p<%s> in %s table\n", __func__, ni,
2064 ether_sprintf(ni->ni_macaddr),
2065 nt != NULL ? nt->nt_name : "<gone>");
2067 if (ni->ni_associd != 0) {
2068 struct ieee80211vap *vap = ni->ni_vap;
2069 if (vap->iv_aid_bitmap != NULL)
2070 IEEE80211_AID_CLR(vap, ni->ni_associd);
2073 ieee80211_del_node_nt(nt, ni);
2074 ni->ni_ic->ic_node_free(ni);
2078 * Clear any entry in the unicast key mapping table.
2081 node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2083 ieee80211_keyix keyix;
2085 keyix = ni->ni_ucastkey.wk_rxkeyix;
2086 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
2087 nt->nt_keyixmap[keyix] == ni) {
2088 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2089 "%s: %p<%s> clear key map entry %u\n",
2090 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
2091 nt->nt_keyixmap[keyix] = NULL;
2092 ieee80211_node_decref(ni);
2100 #ifdef IEEE80211_DEBUG_REFCNT
2101 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
2103 ieee80211_free_node(struct ieee80211_node *ni)
2106 struct ieee80211_node_table *nt = ni->ni_table;
2108 #ifdef IEEE80211_DEBUG_REFCNT
2109 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2110 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
2111 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
2114 IEEE80211_NODE_LOCK(nt);
2115 if (ieee80211_node_dectestref(ni)) {
2117 * Last reference, reclaim state.
2119 _ieee80211_free_node(ni);
2120 } else if (ieee80211_node_refcnt(ni) == 1)
2121 if (node_clear_keyixmap(nt, ni))
2122 _ieee80211_free_node(ni);
2123 IEEE80211_NODE_UNLOCK(nt);
2125 if (ieee80211_node_dectestref(ni))
2126 _ieee80211_free_node(ni);
2131 * Reclaim a unicast key and clear any key cache state.
2134 ieee80211_node_delucastkey(struct ieee80211_node *ni)
2136 struct ieee80211com *ic = ni->ni_ic;
2137 struct ieee80211_node_table *nt = &ic->ic_sta;
2138 struct ieee80211_node *nikey;
2139 ieee80211_keyix keyix;
2140 int isowned, status;
2143 * NB: We must beware of LOR here; deleting the key
2144 * can cause the crypto layer to block traffic updates
2145 * which can generate a LOR against the node table lock;
2146 * grab it here and stash the key index for our use below.
2148 * Must also beware of recursion on the node table lock.
2149 * When called from node_cleanup we may already have
2150 * the node table lock held. Unfortunately there's no
2151 * way to separate out this path so we must do this
2154 isowned = IEEE80211_NODE_IS_LOCKED(nt);
2156 IEEE80211_NODE_LOCK(nt);
2158 status = 1; /* NB: success */
2159 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
2160 keyix = ni->ni_ucastkey.wk_rxkeyix;
2161 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
2162 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
2163 nikey = nt->nt_keyixmap[keyix];
2164 nt->nt_keyixmap[keyix] = NULL;
2168 IEEE80211_NODE_UNLOCK(nt);
2170 if (nikey != NULL) {
2171 KASSERT(nikey == ni,
2172 ("key map out of sync, ni %p nikey %p", ni, nikey));
2173 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2174 "%s: delete key map entry %p<%s> refcnt %d\n",
2175 __func__, ni, ether_sprintf(ni->ni_macaddr),
2176 ieee80211_node_refcnt(ni)-1);
2177 ieee80211_free_node(ni);
2183 * Reclaim a node. If this is the last reference count then
2184 * do the normal free work. Otherwise remove it from the node
2185 * table and mark it gone by clearing the back-reference.
2188 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2191 IEEE80211_NODE_LOCK_ASSERT(nt);
2193 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2194 "%s: remove %p<%s> from %s table, refcnt %d\n",
2195 __func__, ni, ether_sprintf(ni->ni_macaddr),
2196 nt->nt_name, ieee80211_node_refcnt(ni)-1);
2198 * Clear any entry in the unicast key mapping table.
2199 * We need to do it here so rx lookups don't find it
2200 * in the mapping table even if it's not in the hash
2201 * table. We cannot depend on the mapping table entry
2202 * being cleared because the node may not be free'd.
2204 (void)node_clear_keyixmap(nt, ni);
2205 if (!ieee80211_node_dectestref(ni)) {
2207 * Other references are present, just remove the
2208 * node from the table so it cannot be found. When
2209 * the references are dropped storage will be
2212 ieee80211_del_node_nt(nt, ni);
2214 _ieee80211_free_node(ni);
2218 * Node table support.
2222 ieee80211_node_table_init(struct ieee80211com *ic,
2223 struct ieee80211_node_table *nt,
2224 const char *name, int inact, int keyixmax)
2228 IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
2229 TAILQ_INIT(&nt->nt_node);
2232 nt->nt_inact_init = inact;
2233 nt->nt_keyixmax = keyixmax;
2234 if (nt->nt_keyixmax > 0) {
2235 nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
2236 keyixmax * sizeof(struct ieee80211_node *),
2238 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2239 if (nt->nt_keyixmap == NULL)
2241 "Cannot allocate key index map with %u entries\n",
2244 nt->nt_keyixmap = NULL;
2248 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
2249 struct ieee80211vap *match)
2251 struct ieee80211_node *ni, *next;
2253 IEEE80211_NODE_LOCK(nt);
2254 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
2255 if (match != NULL && ni->ni_vap != match)
2257 /* XXX can this happen? if so need's work */
2258 if (ni->ni_associd != 0) {
2259 struct ieee80211vap *vap = ni->ni_vap;
2261 if (vap->iv_auth->ia_node_leave != NULL)
2262 vap->iv_auth->ia_node_leave(ni);
2263 if (vap->iv_aid_bitmap != NULL)
2264 IEEE80211_AID_CLR(vap, ni->ni_associd);
2266 ni->ni_wdsvap = NULL; /* clear reference */
2267 node_reclaim(nt, ni);
2269 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
2271 * Make a separate pass to clear references to this vap
2272 * held by DWDS entries. They will not be matched above
2273 * because ni_vap will point to the ap vap but we still
2274 * need to clear ni_wdsvap when the WDS vap is destroyed
2277 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
2278 if (ni->ni_wdsvap == match)
2279 ni->ni_wdsvap = NULL;
2281 IEEE80211_NODE_UNLOCK(nt);
2285 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
2287 ieee80211_node_table_reset(nt, NULL);
2288 if (nt->nt_keyixmap != NULL) {
2290 /* XXX verify all entries are NULL */
2292 for (i = 0; i < nt->nt_keyixmax; i++)
2293 if (nt->nt_keyixmap[i] != NULL)
2294 printf("%s: %s[%u] still active\n", __func__,
2297 IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
2298 nt->nt_keyixmap = NULL;
2300 IEEE80211_NODE_LOCK_DESTROY(nt);
2304 timeout_stations(void *arg __unused, struct ieee80211_node *ni)
2306 struct ieee80211com *ic = ni->ni_ic;
2307 struct ieee80211vap *vap = ni->ni_vap;
2310 * Only process stations when in RUN state. This
2311 * insures, for example, that we don't timeout an
2312 * inactive station during CAC. Note that CSA state
2313 * is actually handled in ieee80211_node_timeout as
2314 * it applies to more than timeout processing.
2316 if (vap->iv_state != IEEE80211_S_RUN)
2319 * Ignore entries for which have yet to receive an
2320 * authentication frame. These are transient and
2321 * will be reclaimed when the last reference to them
2322 * goes away (when frame xmits complete).
2324 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2325 vap->iv_opmode == IEEE80211_M_STA) &&
2326 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2329 * Free fragment if not needed anymore
2330 * (last fragment older than 1s).
2331 * XXX doesn't belong here, move to node_age
2333 if (ni->ni_rxfrag[0] != NULL &&
2334 ticks > ni->ni_rxfragstamp + hz) {
2335 m_freem(ni->ni_rxfrag[0]);
2336 ni->ni_rxfrag[0] = NULL;
2338 if (ni->ni_inact > 0) {
2340 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2341 "%s: inact %u inact_reload %u nrates %u",
2342 __func__, ni->ni_inact, ni->ni_inact_reload,
2343 ni->ni_rates.rs_nrates);
2346 * Special case ourself; we may be idle for extended periods
2347 * of time and regardless reclaiming our state is wrong.
2348 * XXX run ic_node_age
2350 /* XXX before inact decrement? */
2351 if (ni == vap->iv_bss)
2353 if (ni->ni_associd != 0 ||
2354 (vap->iv_opmode == IEEE80211_M_IBSS ||
2355 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2357 * Age/drain resources held by the station.
2359 ic->ic_node_age(ni);
2361 * Probe the station before time it out. We
2362 * send a null data frame which may not be
2363 * universally supported by drivers (need it
2364 * for ps-poll support so it should be...).
2366 * XXX don't probe the station unless we've
2367 * received a frame from them (and have
2368 * some idea of the rates they are capable
2369 * of); this will get fixed more properly
2370 * soon with better handling of the rate set.
2372 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2373 (0 < ni->ni_inact &&
2374 ni->ni_inact <= vap->iv_inact_probe) &&
2375 ni->ni_rates.rs_nrates != 0) {
2377 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2379 "probe station due to inactivity");
2381 * Grab a reference so the node cannot
2382 * be reclaimed before we send the frame.
2383 * ieee80211_send_nulldata understands
2384 * we've done this and reclaims the
2385 * ref for us as needed.
2387 /* XXX fix this (not required anymore). */
2388 ieee80211_ref_node(ni);
2390 ieee80211_send_nulldata(ni);
2395 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2396 ni->ni_inact <= 0) {
2398 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2399 "station timed out due to inactivity "
2400 "(refcnt %u)", ieee80211_node_refcnt(ni));
2402 * Send a deauthenticate frame and drop the station.
2403 * This is somewhat complicated due to reference counts
2404 * and locking. At this point a station will typically
2405 * have a reference count of 2. ieee80211_node_leave
2406 * will do a "free" of the node which will drop the
2407 * reference count. But in the meantime a reference
2408 * wil be held by the deauth frame. The actual reclaim
2409 * of the node will happen either after the tx is
2410 * completed or by ieee80211_node_leave.
2412 if (ni->ni_associd != 0) {
2413 IEEE80211_SEND_MGMT(ni,
2414 IEEE80211_FC0_SUBTYPE_DEAUTH,
2415 IEEE80211_REASON_AUTH_EXPIRE);
2417 ieee80211_node_leave(ni);
2418 vap->iv_stats.is_node_timeout++;
2423 * Timeout inactive stations and do related housekeeping.
2426 ieee80211_timeout_stations(struct ieee80211com *ic)
2428 struct ieee80211_node_table *nt = &ic->ic_sta;
2430 ieee80211_iterate_nodes(nt, timeout_stations, NULL);
2434 * Aggressively reclaim resources. This should be used
2435 * only in a critical situation to reclaim mbuf resources.
2438 ieee80211_drain(struct ieee80211com *ic)
2440 struct ieee80211_node_table *nt = &ic->ic_sta;
2441 struct ieee80211vap *vap;
2442 struct ieee80211_node *ni;
2444 IEEE80211_NODE_LOCK(nt);
2445 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2447 * Ignore entries for which have yet to receive an
2448 * authentication frame. These are transient and
2449 * will be reclaimed when the last reference to them
2450 * goes away (when frame xmits complete).
2454 * Only process stations when in RUN state. This
2455 * insures, for example, that we don't timeout an
2456 * inactive station during CAC. Note that CSA state
2457 * is actually handled in ieee80211_node_timeout as
2458 * it applies to more than timeout processing.
2460 if (vap->iv_state != IEEE80211_S_RUN)
2462 /* XXX can vap be NULL? */
2463 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2464 vap->iv_opmode == IEEE80211_M_STA) &&
2465 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2469 * XXX doesn't belong here, move to node_drain
2471 if (ni->ni_rxfrag[0] != NULL) {
2472 m_freem(ni->ni_rxfrag[0]);
2473 ni->ni_rxfrag[0] = NULL;
2476 * Drain resources held by the station.
2478 ic->ic_node_drain(ni);
2480 IEEE80211_NODE_UNLOCK(nt);
2484 * Per-ieee80211com inactivity timer callback.
2487 ieee80211_node_timeout(void *arg)
2489 struct ieee80211com *ic = arg;
2492 * Defer timeout processing if a channel switch is pending.
2493 * We typically need to be mute so not doing things that
2494 * might generate frames is good to handle in one place.
2495 * Suppressing the station timeout processing may extend the
2496 * lifetime of inactive stations (by not decrementing their
2497 * idle counters) but this should be ok unless the CSA is
2498 * active for an unusually long time.
2500 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2501 ieee80211_scan_timeout(ic);
2502 ieee80211_timeout_stations(ic);
2503 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2506 ieee80211_erp_timeout(ic);
2507 ieee80211_ht_timeout(ic);
2508 ieee80211_vht_timeout(ic);
2509 IEEE80211_UNLOCK(ic);
2511 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2512 ieee80211_node_timeout, ic);
2516 * The same as ieee80211_iterate_nodes(), but for one vap only.
2519 ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt,
2520 struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg)
2522 struct ieee80211_node **ni_arr;
2523 struct ieee80211_node *ni;
2528 * Iterate over the node table and save an array of ref'ed nodes.
2530 * This is separated out from calling the actual node function so that
2531 * no LORs will occur.
2533 IEEE80211_NODE_LOCK(nt);
2534 count = nt->nt_count;
2535 size = count * sizeof(struct ieee80211_node *);
2536 ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
2537 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2538 if (ni_arr == NULL) {
2539 IEEE80211_NODE_UNLOCK(nt);
2544 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2545 if (vap != NULL && ni->ni_vap != vap)
2548 ("node array overflow (vap %p, i %d, count %d)\n",
2550 ni_arr[i] = ieee80211_ref_node(ni);
2553 IEEE80211_NODE_UNLOCK(nt);
2555 for (i = 0; i < count; i++) {
2556 if (ni_arr[i] == NULL) /* end of the list */
2558 (*f)(arg, ni_arr[i]);
2559 /* ieee80211_free_node() locks by itself */
2560 ieee80211_free_node(ni_arr[i]);
2563 IEEE80211_FREE(ni_arr, M_80211_NODE);
2569 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2570 * reference in the source.
2573 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2574 ieee80211_iter_func *f, void *arg)
2576 /* XXX no way to pass error to the caller. */
2577 (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg);
2581 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2583 printf("0x%p: mac %s refcnt %d\n", ni,
2584 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2585 printf("\tauthmode %u flags 0x%x\n",
2586 ni->ni_authmode, ni->ni_flags);
2587 printf("\tassocid 0x%x txpower %u vlan %u\n",
2588 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2589 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2590 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2591 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2592 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2593 ni->ni_rxfragstamp);
2594 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2595 node_getrssi(ni), ni->ni_noise,
2596 ni->ni_intval, ni->ni_capinfo);
2597 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2598 ether_sprintf(ni->ni_bssid),
2599 ni->ni_esslen, ni->ni_essid,
2600 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2601 printf("\tinact %u inact_reload %u txrate %u\n",
2602 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2603 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2604 ni->ni_htcap, ni->ni_htparam,
2605 ni->ni_htctlchan, ni->ni_ht2ndchan);
2606 printf("\thtopmode %x htstbc %x htchw %u\n",
2607 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2608 printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n",
2609 ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2,
2610 (int) ni->ni_vht_basicmcs);
2615 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2617 ieee80211_iterate_nodes(nt,
2618 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2622 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2624 struct ieee80211vap *vap;
2626 IEEE80211_LOCK_ASSERT(ic);
2628 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2629 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2630 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2634 ieee80211_notify_erp(struct ieee80211com *ic)
2637 ieee80211_notify_erp_locked(ic);
2638 IEEE80211_UNLOCK(ic);
2642 * Handle a station joining an 11g network.
2645 ieee80211_node_join_11g(struct ieee80211_node *ni)
2647 struct ieee80211com *ic = ni->ni_ic;
2649 IEEE80211_LOCK_ASSERT(ic);
2652 * Station isn't capable of short slot time. Bump
2653 * the count of long slot time stations and disable
2654 * use of short slot time. Note that the actual switch
2655 * over to long slot time use may not occur until the
2656 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2658 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2659 ic->ic_longslotsta++;
2660 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2661 "station needs long slot time, count %d",
2662 ic->ic_longslotsta);
2663 /* XXX vap's w/ conflicting needs won't work */
2664 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2666 * Don't force slot time when switched to turbo
2667 * mode as non-ERP stations won't be present; this
2668 * need only be done when on the normal G channel.
2670 ieee80211_set_shortslottime(ic, 0);
2674 * If the new station is not an ERP station
2675 * then bump the counter and enable protection
2678 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2680 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2681 "station is !ERP, %d non-ERP stations associated",
2684 * If station does not support short preamble
2685 * then we must enable use of Barker preamble.
2687 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2688 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2689 "%s", "station needs long preamble");
2690 ic->ic_flags |= IEEE80211_F_USEBARKER;
2691 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
2694 * If protection is configured and this is the first
2695 * indication we should use protection, enable it.
2697 if (ic->ic_protmode != IEEE80211_PROT_NONE &&
2698 ic->ic_nonerpsta == 1 &&
2699 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2700 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2701 "%s: enable use of protection\n", __func__);
2702 ic->ic_flags |= IEEE80211_F_USEPROT;
2703 ieee80211_notify_erp_locked(ic);
2706 ni->ni_flags |= IEEE80211_NODE_ERP;
2710 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2712 struct ieee80211com *ic = ni->ni_ic;
2713 struct ieee80211vap *vap = ni->ni_vap;
2716 if (ni->ni_associd == 0) {
2719 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2721 * It would be good to search the bitmap
2722 * more efficiently, but this will do for now.
2724 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2725 if (!IEEE80211_AID_ISSET(vap, aid))
2728 if (aid >= vap->iv_max_aid) {
2729 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2730 ieee80211_node_leave(ni);
2733 ni->ni_associd = aid | 0xc000;
2734 ni->ni_jointime = time_uptime;
2736 IEEE80211_AID_SET(vap, ni->ni_associd);
2737 vap->iv_sta_assoc++;
2740 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2741 ieee80211_ht_node_join(ni);
2742 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2743 ieee80211_vht_node_join(ni);
2744 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2745 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2746 ieee80211_node_join_11g(ni);
2747 IEEE80211_UNLOCK(ic);
2754 * XXX VHT - should log VHT channel width, etc
2756 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2757 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
2758 IEEE80211_NODE_AID(ni),
2759 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2760 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2761 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2762 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2763 /* XXX update for VHT string */
2764 ni->ni_flags & IEEE80211_NODE_HT ?
2765 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2766 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2767 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2768 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2769 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2770 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2771 ", fast-frames" : "",
2772 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2776 ieee80211_node_setuptxparms(ni);
2777 ieee80211_ratectl_node_init(ni);
2778 /* give driver a chance to setup state like ni_txrate */
2779 if (ic->ic_newassoc != NULL)
2780 ic->ic_newassoc(ni, newassoc);
2781 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2782 /* tell the authenticator about new station */
2783 if (vap->iv_auth->ia_node_join != NULL)
2784 vap->iv_auth->ia_node_join(ni);
2785 ieee80211_notify_node_join(ni,
2786 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2790 disable_protection(struct ieee80211com *ic)
2792 KASSERT(ic->ic_nonerpsta == 0 &&
2793 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2794 ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
2797 ic->ic_flags &= ~IEEE80211_F_USEPROT;
2798 /* XXX verify mode? */
2799 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2800 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
2801 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
2803 ieee80211_notify_erp_locked(ic);
2807 * Handle a station leaving an 11g network.
2810 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2812 struct ieee80211com *ic = ni->ni_ic;
2814 IEEE80211_LOCK_ASSERT(ic);
2816 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2817 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2818 ic->ic_bsschan->ic_flags));
2821 * If a long slot station do the slot time bookkeeping.
2823 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2824 KASSERT(ic->ic_longslotsta > 0,
2825 ("bogus long slot station count %d", ic->ic_longslotsta));
2826 ic->ic_longslotsta--;
2827 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2828 "long slot time station leaves, count now %d",
2829 ic->ic_longslotsta);
2830 if (ic->ic_longslotsta == 0) {
2832 * Re-enable use of short slot time if supported
2833 * and not operating in IBSS mode (per spec).
2835 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2836 ic->ic_opmode != IEEE80211_M_IBSS) {
2837 IEEE80211_DPRINTF(ni->ni_vap,
2838 IEEE80211_MSG_ASSOC,
2839 "%s: re-enable use of short slot time\n",
2841 ieee80211_set_shortslottime(ic, 1);
2846 * If a non-ERP station do the protection-related bookkeeping.
2848 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2849 KASSERT(ic->ic_nonerpsta > 0,
2850 ("bogus non-ERP station count %d", ic->ic_nonerpsta));
2852 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2853 "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
2854 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2855 " (non-ERP sta present)" : "");
2856 if (ic->ic_nonerpsta == 0 &&
2857 (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2858 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2859 "%s: disable use of protection\n", __func__);
2860 disable_protection(ic);
2866 * Time out presence of an overlapping bss with non-ERP
2867 * stations. When operating in hostap mode we listen for
2868 * beacons from other stations and if we identify a non-ERP
2869 * station is present we enable protection. To identify
2870 * when all non-ERP stations are gone we time out this
2874 ieee80211_erp_timeout(struct ieee80211com *ic)
2877 IEEE80211_LOCK_ASSERT(ic);
2879 if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2880 ieee80211_time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2882 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
2883 "%s", "age out non-ERP sta present on channel");
2885 ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2886 if (ic->ic_nonerpsta == 0)
2887 disable_protection(ic);
2892 * Handle bookkeeping for station deauthentication/disassociation
2893 * when operating as an ap.
2896 ieee80211_node_leave(struct ieee80211_node *ni)
2898 struct ieee80211com *ic = ni->ni_ic;
2899 struct ieee80211vap *vap = ni->ni_vap;
2900 struct ieee80211_node_table *nt = ni->ni_table;
2902 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2903 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2905 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2906 ("unexpected operating mode %u", vap->iv_opmode));
2908 * If node wasn't previously associated all
2909 * we need to do is reclaim the reference.
2911 /* XXX ibss mode bypasses 11g and notification */
2912 if (ni->ni_associd == 0)
2915 * Tell the authenticator the station is leaving.
2916 * Note that we must do this before yanking the
2917 * association id as the authenticator uses the
2918 * associd to locate it's state block.
2920 if (vap->iv_auth->ia_node_leave != NULL)
2921 vap->iv_auth->ia_node_leave(ni);
2924 IEEE80211_AID_CLR(vap, ni->ni_associd);
2925 vap->iv_sta_assoc--;
2928 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2929 ieee80211_vht_node_leave(ni);
2930 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2931 ieee80211_ht_node_leave(ni);
2932 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2933 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2934 ieee80211_node_leave_11g(ni);
2935 IEEE80211_UNLOCK(ic);
2937 * Cleanup station state. In particular clear various
2938 * state that might otherwise be reused if the node
2939 * is reused before the reference count goes to zero
2940 * (and memory is reclaimed).
2942 ieee80211_sta_leave(ni);
2945 * Remove the node from any table it's recorded in and
2946 * drop the caller's reference. Removal from the table
2947 * is important to insure the node is not reprocessed
2951 IEEE80211_NODE_LOCK(nt);
2952 node_reclaim(nt, ni);
2953 IEEE80211_NODE_UNLOCK(nt);
2955 ieee80211_free_node(ni);
2960 uint32_t rssi_total;
2964 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
2966 struct rssiinfo *info = arg;
2967 struct ieee80211vap *vap = ni->ni_vap;
2970 /* only associated stations */
2971 if (ni->ni_associd == 0)
2973 rssi = vap->iv_ic->ic_node_getrssi(ni);
2975 info->rssi_samples++;
2976 info->rssi_total += rssi;
2981 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
2983 struct rssiinfo *info = arg;
2984 struct ieee80211vap *vap = ni->ni_vap;
2987 /* only neighbors */
2988 /* XXX check bssid */
2989 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
2991 rssi = vap->iv_ic->ic_node_getrssi(ni);
2993 info->rssi_samples++;
2994 info->rssi_total += rssi;
2998 #ifdef IEEE80211_SUPPORT_MESH
3000 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
3002 struct rssiinfo *info = arg;
3003 struct ieee80211vap *vap = ni->ni_vap;
3006 /* only neighbors that peered successfully */
3007 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
3009 rssi = vap->iv_ic->ic_node_getrssi(ni);
3011 info->rssi_samples++;
3012 info->rssi_total += rssi;
3015 #endif /* IEEE80211_SUPPORT_MESH */
3018 ieee80211_getrssi(struct ieee80211vap *vap)
3020 #define NZ(x) ((x) == 0 ? 1 : (x))
3021 struct ieee80211com *ic = vap->iv_ic;
3022 struct rssiinfo info;
3024 info.rssi_total = 0;
3025 info.rssi_samples = 0;
3026 switch (vap->iv_opmode) {
3027 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
3028 case IEEE80211_M_AHDEMO: /* average of all neighbors */
3029 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi,
3032 case IEEE80211_M_HOSTAP: /* average of all associated stations */
3033 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi,
3036 #ifdef IEEE80211_SUPPORT_MESH
3037 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
3038 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi,
3042 case IEEE80211_M_MONITOR: /* XXX */
3043 case IEEE80211_M_STA: /* use stats from associated ap */
3045 if (vap->iv_bss != NULL)
3046 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
3047 info.rssi_samples = 1;
3050 return info.rssi_total / NZ(info.rssi_samples);
3055 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
3058 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
3060 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
3061 /* for non-station mode return avg'd rssi accounting */
3062 if (vap->iv_opmode != IEEE80211_M_STA)
3063 *rssi = ieee80211_getrssi(vap);