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 int node_init(struct ieee80211_node *);
84 static void node_cleanup(struct ieee80211_node *);
85 static void node_free(struct ieee80211_node *);
86 static void node_age(struct ieee80211_node *);
87 static int8_t node_getrssi(const struct ieee80211_node *);
88 static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *);
89 static void node_getmimoinfo(const struct ieee80211_node *,
90 struct ieee80211_mimo_info *);
92 static void _ieee80211_free_node(struct ieee80211_node *);
94 static void node_reclaim(struct ieee80211_node_table *nt,
95 struct ieee80211_node *ni);
96 static void ieee80211_node_table_init(struct ieee80211com *ic,
97 struct ieee80211_node_table *nt, const char *name,
98 int inact, int keymaxix);
99 static void ieee80211_node_table_reset(struct ieee80211_node_table *,
100 struct ieee80211vap *);
101 static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
102 static void ieee80211_vap_erp_timeout(struct ieee80211vap *);
104 MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
105 MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
108 ieee80211_node_attach(struct ieee80211com *ic)
110 /* XXX really want maxlen enforced per-sta */
111 ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
113 ieee80211_node_table_init(ic, &ic->ic_sta, "station",
114 IEEE80211_INACT_INIT, ic->ic_max_keyix);
115 callout_init(&ic->ic_inact, 1);
116 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
117 ieee80211_node_timeout, ic);
119 ic->ic_node_alloc = node_alloc;
120 ic->ic_node_init = node_init;
121 ic->ic_node_free = node_free;
122 ic->ic_node_cleanup = node_cleanup;
123 ic->ic_node_age = node_age;
124 ic->ic_node_drain = node_age; /* NB: same as age */
125 ic->ic_node_getrssi = node_getrssi;
126 ic->ic_node_getsignal = node_getsignal;
127 ic->ic_node_getmimoinfo = node_getmimoinfo;
130 * Set flags to be propagated to all vap's;
131 * these define default behaviour/configuration.
133 ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
137 ieee80211_node_detach(struct ieee80211com *ic)
140 callout_drain(&ic->ic_inact);
141 ieee80211_node_table_cleanup(&ic->ic_sta);
142 ieee80211_ageq_drain(&ic->ic_stageq);
143 ieee80211_ageq_cleanup(&ic->ic_stageq);
147 ieee80211_node_vattach(struct ieee80211vap *vap)
149 /* NB: driver can override */
150 vap->iv_max_aid = IEEE80211_AID_DEF;
152 /* default station inactivity timer setings */
153 vap->iv_inact_init = IEEE80211_INACT_INIT;
154 vap->iv_inact_auth = IEEE80211_INACT_AUTH;
155 vap->iv_inact_run = IEEE80211_INACT_RUN;
156 vap->iv_inact_probe = IEEE80211_INACT_PROBE;
158 IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
159 "%s: init %u auth %u run %u probe %u\n", __func__,
160 vap->iv_inact_init, vap->iv_inact_auth,
161 vap->iv_inact_run, vap->iv_inact_probe);
165 ieee80211_node_latevattach(struct ieee80211vap *vap)
167 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
168 /* XXX should we allow max aid to be zero? */
169 if (vap->iv_max_aid < IEEE80211_AID_MIN) {
170 vap->iv_max_aid = IEEE80211_AID_MIN;
171 if_printf(vap->iv_ifp,
172 "WARNING: max aid too small, changed to %d\n",
175 vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC(
176 howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
178 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
179 if (vap->iv_aid_bitmap == NULL) {
180 /* XXX no way to recover */
181 printf("%s: no memory for AID bitmap, max aid %d!\n",
182 __func__, vap->iv_max_aid);
187 ieee80211_reset_bss(vap);
189 vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
193 ieee80211_node_vdetach(struct ieee80211vap *vap)
195 struct ieee80211com *ic = vap->iv_ic;
197 ieee80211_node_table_reset(&ic->ic_sta, vap);
198 if (vap->iv_bss != NULL) {
199 ieee80211_free_node(vap->iv_bss);
202 if (vap->iv_aid_bitmap != NULL) {
203 IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE);
204 vap->iv_aid_bitmap = NULL;
209 * Port authorize/unauthorize interfaces for use by an authenticator.
213 ieee80211_node_authorize(struct ieee80211_node *ni)
215 struct ieee80211vap *vap = ni->ni_vap;
217 ni->ni_flags |= IEEE80211_NODE_AUTH;
218 ni->ni_inact_reload = vap->iv_inact_run;
219 ni->ni_inact = ni->ni_inact_reload;
221 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
222 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
226 ieee80211_node_unauthorize(struct ieee80211_node *ni)
228 struct ieee80211vap *vap = ni->ni_vap;
230 ni->ni_flags &= ~IEEE80211_NODE_AUTH;
231 ni->ni_inact_reload = vap->iv_inact_auth;
232 if (ni->ni_inact > ni->ni_inact_reload)
233 ni->ni_inact = ni->ni_inact_reload;
235 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
236 "%s: inact_reload %u inact %u", __func__,
237 ni->ni_inact_reload, ni->ni_inact);
241 * Fix tx parameters for a node according to ``association state''.
244 ieee80211_node_setuptxparms(struct ieee80211_node *ni)
246 struct ieee80211vap *vap = ni->ni_vap;
247 enum ieee80211_phymode mode;
249 if (ni->ni_flags & IEEE80211_NODE_VHT) {
250 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
251 mode = IEEE80211_MODE_VHT_5GHZ;
253 mode = IEEE80211_MODE_VHT_2GHZ;
254 } else if (ni->ni_flags & IEEE80211_NODE_HT) {
255 if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
256 mode = IEEE80211_MODE_11NA;
258 mode = IEEE80211_MODE_11NG;
259 } else { /* legacy rate handling */
260 if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
261 mode = IEEE80211_MODE_STURBO_A;
262 else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
263 mode = IEEE80211_MODE_HALF;
264 else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
265 mode = IEEE80211_MODE_QUARTER;
266 /* NB: 108A should be handled as 11a */
267 else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
268 mode = IEEE80211_MODE_11A;
269 else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
270 (ni->ni_flags & IEEE80211_NODE_ERP))
271 mode = IEEE80211_MODE_11G;
273 mode = IEEE80211_MODE_11B;
275 ni->ni_txparms = &vap->iv_txparms[mode];
279 * Set/change the channel. The rate set is also updated as
280 * to insure a consistent view by drivers.
281 * XXX should be private but hostap needs it to deal with CSA
284 ieee80211_node_set_chan(struct ieee80211_node *ni,
285 struct ieee80211_channel *chan)
287 struct ieee80211com *ic = ni->ni_ic;
288 struct ieee80211vap *vap = ni->ni_vap;
289 enum ieee80211_phymode mode;
291 KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
294 mode = ieee80211_chan2mode(chan);
295 if (IEEE80211_IS_CHAN_HT(chan)) {
297 * We must install the legacy rate est in ni_rates and the
298 * HT rate set in ni_htrates.
300 ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
302 * Setup bss tx parameters based on operating mode. We
303 * use legacy rates when operating in a mixed HT+non-HT bss
304 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
306 if (mode == IEEE80211_MODE_11NA &&
307 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
308 mode = IEEE80211_MODE_11A;
309 else if (mode == IEEE80211_MODE_11NG &&
310 (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
311 mode = IEEE80211_MODE_11G;
312 if (mode == IEEE80211_MODE_11G &&
313 (vap->iv_flags & IEEE80211_F_PUREG) == 0)
314 mode = IEEE80211_MODE_11B;
316 ni->ni_txparms = &vap->iv_txparms[mode];
317 ni->ni_rates = *ieee80211_get_suprates(ic, chan);
321 copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
323 /* propagate useful state */
324 nbss->ni_authmode = obss->ni_authmode;
325 nbss->ni_txpower = obss->ni_txpower;
326 nbss->ni_vlan = obss->ni_vlan;
327 /* XXX statistics? */
328 /* XXX legacy WDS bssid? */
332 ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
334 struct ieee80211com *ic = vap->iv_ic;
335 struct ieee80211_node *ni;
337 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
338 "%s: creating %s on channel %u%c flags 0x%08x\n", __func__,
339 ieee80211_opmode_name[vap->iv_opmode],
340 ieee80211_chan2ieee(ic, chan),
341 ieee80211_channel_type_char(chan),
344 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
349 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
350 ni->ni_esslen = vap->iv_des_ssid[0].len;
351 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
352 if (vap->iv_bss != NULL)
353 copy_bss(ni, vap->iv_bss);
354 ni->ni_intval = ic->ic_bintval;
355 if (vap->iv_flags & IEEE80211_F_PRIVACY)
356 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
357 if (ic->ic_phytype == IEEE80211_T_FH) {
358 ni->ni_fhdwell = 200; /* XXX */
361 if (vap->iv_opmode == IEEE80211_M_IBSS) {
362 ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
363 if (vap->iv_flags & IEEE80211_F_DESBSSID)
364 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
366 get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
367 /* clear group bit, add local bit */
368 ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
370 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
371 if (vap->iv_flags & IEEE80211_F_DESBSSID)
372 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
374 #ifdef IEEE80211_SUPPORT_TDMA
375 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
377 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
378 #ifdef IEEE80211_SUPPORT_MESH
379 } else if (vap->iv_opmode == IEEE80211_M_MBSS) {
380 ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
381 memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
385 * Fix the channel and related attributes.
387 /* clear DFS CAC state on previous channel */
388 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
389 ic->ic_bsschan->ic_freq != chan->ic_freq &&
390 IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
391 ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
392 ic->ic_bsschan = chan;
393 ieee80211_node_set_chan(ni, chan);
394 ic->ic_curmode = ieee80211_chan2mode(chan);
396 * Do mode-specific setup.
398 if (IEEE80211_IS_CHAN_FULL(chan)) {
399 if (IEEE80211_IS_CHAN_ANYG(chan)) {
401 * Use a mixed 11b/11g basic rate set.
403 ieee80211_setbasicrates(&ni->ni_rates,
405 if (vap->iv_flags & IEEE80211_F_PUREG) {
407 * Also mark OFDM rates basic so 11b
408 * stations do not join (WiFi compliance).
410 ieee80211_addbasicrates(&ni->ni_rates,
413 } else if (IEEE80211_IS_CHAN_B(chan)) {
415 * Force pure 11b rate set.
417 ieee80211_setbasicrates(&ni->ni_rates,
422 /* XXX TODO: other bits and pieces - eg fast-frames? */
424 /* If we're an 11n channel then initialise the 11n bits */
425 if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
427 ieee80211_ht_node_init(ni);
428 ieee80211_vht_node_init(ni);
429 } else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
431 ieee80211_ht_node_init(ni);
434 (void) ieee80211_sta_join1(ieee80211_ref_node(ni));
438 * Reset bss state on transition to the INIT state.
439 * Clear any stations from the table (they have been
440 * deauth'd) and reset the bss node (clears key, rate
444 ieee80211_reset_bss(struct ieee80211vap *vap)
446 struct ieee80211com *ic = vap->iv_ic;
447 struct ieee80211_node *ni, *obss;
449 ieee80211_node_table_reset(&ic->ic_sta, vap);
450 /* XXX multi-bss: wrong */
451 ieee80211_vap_reset_erp(vap);
453 ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
454 KASSERT(ni != NULL, ("unable to setup initial BSS node"));
456 vap->iv_bss = ieee80211_ref_node(ni);
459 ni->ni_intval = ic->ic_bintval;
460 ieee80211_free_node(obss);
462 IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
466 match_ssid(const struct ieee80211_node *ni,
467 int nssid, const struct ieee80211_scan_ssid ssids[])
471 for (i = 0; i < nssid; i++) {
472 if (ni->ni_esslen == ssids[i].len &&
473 memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
480 * Test a node for suitability/compatibility.
483 check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
485 struct ieee80211com *ic = ni->ni_ic;
488 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
490 if (vap->iv_opmode == IEEE80211_M_IBSS) {
491 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
494 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
497 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
498 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
501 /* XXX does this mean privacy is supported or required? */
502 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
505 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
506 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
507 if (rate & IEEE80211_RATE_BASIC)
509 if (vap->iv_des_nssid != 0 &&
510 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
512 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
513 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
518 #ifdef IEEE80211_DEBUG
520 * Display node suitability/compatibility.
523 check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
525 struct ieee80211com *ic = ni->ni_ic;
530 if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
532 if (vap->iv_opmode == IEEE80211_M_IBSS) {
533 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
536 if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
539 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
540 if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
543 /* XXX does this mean privacy is supported or required? */
544 if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
547 rate = ieee80211_fix_rate(ni, &ni->ni_rates,
548 IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
549 if (rate & IEEE80211_RATE_BASIC)
551 if (vap->iv_des_nssid != 0 &&
552 !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
554 if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
555 !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
558 printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
559 printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
561 ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
562 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
563 fail & 0x08 ? '!' : ' ');
565 (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
566 (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
568 fail & 0x02 ? '!' : ' ');
570 (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
571 fail & 0x04 ? '!' : ' ');
572 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
573 printf("%s\n", fail & 0x10 ? "!" : "");
575 #endif /* IEEE80211_DEBUG */
578 ieee80211_ibss_merge_check(struct ieee80211_node *ni)
580 struct ieee80211vap *vap = ni->ni_vap;
582 if (ni == vap->iv_bss ||
583 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
584 /* unchanged, nothing to do */
588 if (!check_bss(vap, ni)) {
589 /* capabilities mismatch */
590 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
591 "%s: merge failed, capabilities mismatch\n", __func__);
592 #ifdef IEEE80211_DEBUG
593 if (ieee80211_msg_assoc(vap))
594 check_bss_debug(vap, ni);
596 vap->iv_stats.is_ibss_capmismatch++;
604 * Check if the given node should populate the node table.
606 * We need to be in "see all beacons for all ssids" mode in order
607 * to do IBSS merges, however this means we will populate nodes for
608 * /all/ IBSS SSIDs, versus just the one we care about.
610 * So this check ensures the node can actually belong to our IBSS
611 * configuration. For now it simply checks the SSID.
614 ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
615 const struct ieee80211_scanparams *scan)
617 struct ieee80211vap *vap = ni->ni_vap;
621 * If we have no SSID and no scan SSID, return OK.
623 if (vap->iv_des_nssid == 0 && scan->ssid == NULL)
627 * If we have one of (SSID, scan SSID) then return error.
629 if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL))
633 * Double-check - we need scan SSID.
635 if (scan->ssid == NULL)
639 * Check if the scan SSID matches the SSID list for the VAP.
641 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;
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 vap->iv_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
684 vap->iv_flags&IEEE80211_F_SHSLOT ? "short" : "long",
685 vap->iv_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_vap_reset_erp(vap);
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 node_init(struct ieee80211_node *ni)
1083 * Initialize an ie blob with the specified data. If previous
1084 * data exists re-use the data block. As a side effect we clear
1085 * all references to specific ie's; the caller is required to
1089 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
1091 /* NB: assumes data+len are the last fields */
1092 memset(ies, 0, offsetof(struct ieee80211_ies, data));
1093 if (ies->data != NULL && ies->len != len) {
1094 /* data size changed */
1095 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1098 if (ies->data == NULL) {
1099 ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
1100 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1101 if (ies->data == NULL) {
1103 /* NB: pointers have already been zero'd above */
1107 memcpy(ies->data, data, len);
1113 * Reclaim storage for an ie blob.
1116 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
1118 if (ies->data != NULL)
1119 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1123 * Expand an ie blob data contents and to fillin individual
1124 * ie pointers. The data blob is assumed to be well-formed;
1125 * we don't do any validity checking of ie lengths.
1128 ieee80211_ies_expand(struct ieee80211_ies *ies)
1137 case IEEE80211_ELEMID_VENDOR:
1140 else if (iswmeoui(ie))
1142 #ifdef IEEE80211_SUPPORT_SUPERG
1143 else if (isatherosoui(ie))
1146 #ifdef IEEE80211_SUPPORT_TDMA
1147 else if (istdmaoui(ie))
1151 case IEEE80211_ELEMID_RSN:
1154 case IEEE80211_ELEMID_HTCAP:
1157 case IEEE80211_ELEMID_HTINFO:
1158 ies->htinfo_ie = ie;
1160 #ifdef IEEE80211_SUPPORT_MESH
1161 case IEEE80211_ELEMID_MESHID:
1162 ies->meshid_ie = ie;
1165 case IEEE80211_ELEMID_VHT_CAP:
1166 ies->vhtcap_ie = ie;
1168 case IEEE80211_ELEMID_VHT_OPMODE:
1169 ies->vhtopmode_ie = ie;
1171 case IEEE80211_ELEMID_VHT_PWR_ENV:
1172 ies->vhtpwrenv_ie = ie;
1174 case IEEE80211_ELEMID_BSSLOAD:
1175 ies->bssload_ie = ie;
1177 case IEEE80211_ELEMID_APCHANREP:
1178 ies->apchanrep_ie = ie;
1187 * Reclaim any resources in a node and reset any critical
1188 * state. Typically nodes are free'd immediately after,
1189 * but in some cases the storage may be reused so we need
1190 * to insure consistent state (should probably fix that).
1193 node_cleanup(struct ieee80211_node *ni)
1195 struct ieee80211vap *vap = ni->ni_vap;
1196 struct ieee80211com *ic = ni->ni_ic;
1199 /* NB: preserve ni_table */
1200 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
1201 if (vap->iv_opmode != IEEE80211_M_STA)
1203 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
1204 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
1205 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1208 * Cleanup any VHT and HT-related state.
1210 if (ni->ni_flags & IEEE80211_NODE_VHT)
1211 ieee80211_vht_node_cleanup(ni);
1212 if (ni->ni_flags & IEEE80211_NODE_HT)
1213 ieee80211_ht_node_cleanup(ni);
1214 #ifdef IEEE80211_SUPPORT_SUPERG
1215 /* Always do FF node cleanup; for A-MSDU */
1216 ieee80211_ff_node_cleanup(ni);
1218 #ifdef IEEE80211_SUPPORT_MESH
1220 * Cleanup any mesh-related state.
1222 if (vap->iv_opmode == IEEE80211_M_MBSS)
1223 ieee80211_mesh_node_cleanup(ni);
1226 * Clear any staging queue entries.
1228 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1231 * Clear AREF flag that marks the authorization refcnt bump
1232 * has happened. This is probably not needed as the node
1233 * should always be removed from the table so not found but
1234 * do it just in case.
1235 * Likewise clear the ASSOCID flag as these flags are intended
1236 * to be managed in tandem.
1238 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1241 * Drain power save queue and, if needed, clear TIM.
1243 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1244 vap->iv_set_tim(ni, 0);
1247 if (ni->ni_challenge != NULL) {
1248 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1249 ni->ni_challenge = NULL;
1252 * Preserve SSID, WPA, and WME ie's so the bss node is
1253 * reusable during a re-auth/re-assoc state transition.
1254 * If we remove these data they will not be recreated
1255 * because they come from a probe-response or beacon frame
1256 * which cannot be expected prior to the association-response.
1257 * This should not be an issue when operating in other modes
1258 * as stations leaving always go through a full state transition
1259 * which will rebuild this state.
1261 * XXX does this leave us open to inheriting old state?
1263 for (i = 0; i < nitems(ni->ni_rxfrag); i++)
1264 if (ni->ni_rxfrag[i] != NULL) {
1265 m_freem(ni->ni_rxfrag[i]);
1266 ni->ni_rxfrag[i] = NULL;
1269 * Must be careful here to remove any key map entry w/o a LOR.
1271 ieee80211_node_delucastkey(ni);
1275 node_free(struct ieee80211_node *ni)
1277 struct ieee80211com *ic = ni->ni_ic;
1279 ieee80211_ratectl_node_deinit(ni);
1280 ic->ic_node_cleanup(ni);
1281 ieee80211_ies_cleanup(&ni->ni_ies);
1282 ieee80211_psq_cleanup(&ni->ni_psq);
1283 IEEE80211_FREE(ni, M_80211_NODE);
1287 node_age(struct ieee80211_node *ni)
1289 struct ieee80211vap *vap = ni->ni_vap;
1292 * Age frames on the power save queue.
1294 if (ieee80211_node_psq_age(ni) != 0 &&
1295 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1296 vap->iv_set_tim(ni, 0);
1298 * Age out HT resources (e.g. frames on the
1299 * A-MPDU reorder queues).
1301 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1302 ieee80211_ht_node_age(ni);
1306 node_getrssi(const struct ieee80211_node *ni)
1308 uint32_t avgrssi = ni->ni_avgrssi;
1311 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1313 rssi = IEEE80211_RSSI_GET(avgrssi);
1314 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1318 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1320 *rssi = node_getrssi(ni);
1321 *noise = ni->ni_noise;
1325 node_getmimoinfo(const struct ieee80211_node *ni,
1326 struct ieee80211_mimo_info *info)
1332 bzero(info, sizeof(*info));
1334 for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) {
1335 /* Note: for now, just pri20 channel info */
1336 avgrssi = ni->ni_mimo_rssi_ctl[i];
1337 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1338 info->ch[i].rssi[0] = 0;
1340 rssi = IEEE80211_RSSI_GET(avgrssi);
1341 info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1343 info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i];
1346 /* XXX ext radios? */
1352 ieee80211_add_node_nt(struct ieee80211_node_table *nt,
1353 struct ieee80211_node *ni)
1355 struct ieee80211com *ic = nt->nt_ic;
1358 IEEE80211_NODE_LOCK_ASSERT(nt);
1360 hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr);
1361 (void) ic; /* XXX IEEE80211_NODE_HASH */
1362 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1363 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1369 ieee80211_del_node_nt(struct ieee80211_node_table *nt,
1370 struct ieee80211_node *ni)
1373 IEEE80211_NODE_LOCK_ASSERT(nt);
1375 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1376 LIST_REMOVE(ni, ni_hash);
1378 KASSERT(nt->nt_count >= 0,
1379 ("nt_count is negative (%d)!\n", nt->nt_count));
1380 ni->ni_table = NULL;
1383 struct ieee80211_node *
1384 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1385 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1387 struct ieee80211com *ic = nt->nt_ic;
1388 struct ieee80211_node *ni;
1390 ni = ic->ic_node_alloc(vap, macaddr);
1392 vap->iv_stats.is_rx_nodealloc++;
1396 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1397 "%s %p<%s> in %s table\n", __func__, ni,
1398 ether_sprintf(macaddr), nt->nt_name);
1400 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1401 ieee80211_node_initref(ni); /* mark referenced */
1402 ni->ni_chan = IEEE80211_CHAN_ANYC;
1403 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1404 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1405 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1406 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1407 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1408 ni->ni_inact_reload = nt->nt_inact_init;
1409 ni->ni_inact = ni->ni_inact_reload;
1410 ni->ni_ath_defkeyix = 0x7fff;
1411 ieee80211_psq_init(&ni->ni_psq, "unknown");
1412 #ifdef IEEE80211_SUPPORT_MESH
1413 if (vap->iv_opmode == IEEE80211_M_MBSS)
1414 ieee80211_mesh_node_init(vap, ni);
1416 IEEE80211_NODE_LOCK(nt);
1417 ieee80211_add_node_nt(nt, ni);
1420 IEEE80211_NODE_UNLOCK(nt);
1422 /* handle failure; free node state */
1423 if (ic->ic_node_init(ni) != 0) {
1424 vap->iv_stats.is_rx_nodealloc++;
1425 ieee80211_psq_cleanup(&ni->ni_psq);
1426 ieee80211_ratectl_node_deinit(ni);
1427 _ieee80211_free_node(ni);
1431 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1432 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1438 * Craft a temporary node suitable for sending a management frame
1439 * to the specified station. We craft only as much state as we
1440 * need to do the work since the node will be immediately reclaimed
1441 * once the send completes.
1443 struct ieee80211_node *
1444 ieee80211_tmp_node(struct ieee80211vap *vap,
1445 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1447 struct ieee80211com *ic = vap->iv_ic;
1448 struct ieee80211_node *ni;
1450 ni = ic->ic_node_alloc(vap, macaddr);
1452 struct ieee80211_node *bss = vap->iv_bss;
1454 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1455 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1457 ni->ni_table = NULL; /* NB: pedantic */
1458 ni->ni_ic = ic; /* NB: needed to set channel */
1461 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1462 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1463 ieee80211_node_initref(ni); /* mark referenced */
1464 /* NB: required by ieee80211_fix_rate */
1465 ieee80211_node_set_chan(ni, bss->ni_chan);
1466 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1467 IEEE80211_KEYIX_NONE);
1468 ni->ni_txpower = bss->ni_txpower;
1469 /* XXX optimize away */
1470 ieee80211_psq_init(&ni->ni_psq, "unknown");
1472 ieee80211_ratectl_node_init(ni);
1474 /* handle failure; free node state */
1475 if (ic->ic_node_init(ni) != 0) {
1476 vap->iv_stats.is_rx_nodealloc++;
1477 ieee80211_psq_cleanup(&ni->ni_psq);
1478 ieee80211_ratectl_node_deinit(ni);
1479 _ieee80211_free_node(ni);
1485 vap->iv_stats.is_rx_nodealloc++;
1490 struct ieee80211_node *
1491 ieee80211_dup_bss(struct ieee80211vap *vap,
1492 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1494 struct ieee80211com *ic = vap->iv_ic;
1495 struct ieee80211_node *ni;
1497 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1499 struct ieee80211_node *bss = vap->iv_bss;
1501 * Inherit from iv_bss.
1504 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1505 ieee80211_node_set_chan(ni, bss->ni_chan);
1511 * Create a bss node for a legacy WDS vap. The far end does
1512 * not associate so we just create create a new node and
1513 * simulate an association. The caller is responsible for
1514 * installing the node as the bss node and handling any further
1515 * setup work like authorizing the port.
1517 struct ieee80211_node *
1518 ieee80211_node_create_wds(struct ieee80211vap *vap,
1519 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1521 struct ieee80211com *ic = vap->iv_ic;
1522 struct ieee80211_node *ni;
1524 /* XXX check if node already in sta table? */
1525 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1527 ni->ni_wdsvap = vap;
1528 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1530 * Inherit any manually configured settings.
1532 copy_bss(ni, vap->iv_bss);
1533 ieee80211_node_set_chan(ni, chan);
1534 /* NB: propagate ssid so available to WPA supplicant */
1535 ni->ni_esslen = vap->iv_des_ssid[0].len;
1536 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1537 /* NB: no associd for peer */
1539 * There are no management frames to use to
1540 * discover neighbor capabilities, so blindly
1541 * propagate the local configuration.
1543 if (vap->iv_flags & IEEE80211_F_WME)
1544 ni->ni_flags |= IEEE80211_NODE_QOS;
1545 #ifdef IEEE80211_SUPPORT_SUPERG
1546 if (vap->iv_flags & IEEE80211_F_FF)
1547 ni->ni_flags |= IEEE80211_NODE_FF;
1550 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1551 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1553 * Device is HT-capable and HT is enabled for
1554 * the vap; setup HT operation. On return
1555 * ni_chan will be adjusted to an HT channel.
1557 ieee80211_ht_wds_init(ni);
1558 if (vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1559 printf("%s: TODO: vht_wds_init\n", __func__);
1562 struct ieee80211_channel *c = ni->ni_chan;
1564 * Force a legacy channel to be used.
1566 c = ieee80211_find_channel(ic,
1567 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1568 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1569 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1576 struct ieee80211_node *
1577 #ifdef IEEE80211_DEBUG_REFCNT
1578 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1579 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1581 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1582 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1585 struct ieee80211_node *ni;
1588 IEEE80211_NODE_LOCK_ASSERT(nt);
1590 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1591 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1592 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1593 ieee80211_ref_node(ni); /* mark referenced */
1594 #ifdef IEEE80211_DEBUG_REFCNT
1595 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1596 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1598 ni, ether_sprintf(ni->ni_macaddr),
1599 ieee80211_node_refcnt(ni));
1607 struct ieee80211_node *
1608 #ifdef IEEE80211_DEBUG_REFCNT
1609 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1610 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1612 ieee80211_find_node(struct ieee80211_node_table *nt,
1613 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1616 struct ieee80211_node *ni;
1618 IEEE80211_NODE_LOCK(nt);
1619 ni = ieee80211_find_node_locked(nt, macaddr);
1620 IEEE80211_NODE_UNLOCK(nt);
1624 struct ieee80211_node *
1625 #ifdef IEEE80211_DEBUG_REFCNT
1626 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1627 const struct ieee80211vap *vap,
1628 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1630 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1631 const struct ieee80211vap *vap,
1632 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1635 struct ieee80211_node *ni;
1638 IEEE80211_NODE_LOCK_ASSERT(nt);
1640 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1641 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1642 if (ni->ni_vap == vap &&
1643 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1644 ieee80211_ref_node(ni); /* mark referenced */
1645 #ifdef IEEE80211_DEBUG_REFCNT
1646 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1647 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1649 ni, ether_sprintf(ni->ni_macaddr),
1650 ieee80211_node_refcnt(ni));
1658 struct ieee80211_node *
1659 #ifdef IEEE80211_DEBUG_REFCNT
1660 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1661 const struct ieee80211vap *vap,
1662 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1664 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1665 const struct ieee80211vap *vap,
1666 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1669 struct ieee80211_node *ni;
1671 IEEE80211_NODE_LOCK(nt);
1672 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1673 IEEE80211_NODE_UNLOCK(nt);
1678 * Fake up a node; this handles node discovery in adhoc mode.
1679 * Note that for the driver's benefit we we treat this like
1680 * an association so the driver has an opportunity to setup
1681 * it's private state.
1683 struct ieee80211_node *
1684 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1685 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1687 struct ieee80211_node *ni;
1689 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1690 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1691 ni = ieee80211_dup_bss(vap, macaddr);
1693 struct ieee80211com *ic = vap->iv_ic;
1695 /* XXX no rate negotiation; just dup */
1696 ni->ni_rates = vap->iv_bss->ni_rates;
1697 if (ieee80211_iserp_rateset(&ni->ni_rates))
1698 ni->ni_flags |= IEEE80211_NODE_ERP;
1699 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1701 * In adhoc demo mode there are no management
1702 * frames to use to discover neighbor capabilities,
1703 * so blindly propagate the local configuration
1704 * so we can do interesting things (e.g. use
1705 * WME to disable ACK's).
1710 if (vap->iv_flags & IEEE80211_F_WME)
1711 ni->ni_flags |= IEEE80211_NODE_QOS;
1712 #ifdef IEEE80211_SUPPORT_SUPERG
1713 if (vap->iv_flags & IEEE80211_F_FF)
1714 ni->ni_flags |= IEEE80211_NODE_FF;
1717 ieee80211_node_setuptxparms(ni);
1718 ieee80211_ratectl_node_init(ni);
1721 * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX,
1722 * not A-MPDU TX; not 11n rates, etc. We'll cycle
1723 * that after we hear that we can indeed do 11n
1724 * (either by a beacon frame or by a probe response.)
1728 * This is the first time we see the node.
1730 if (ic->ic_newassoc != NULL)
1731 ic->ic_newassoc(ni, 1);
1734 * Kick off a probe request to the given node;
1735 * we will then use the probe response to update
1736 * 11n/etc configuration state.
1738 * XXX TODO: this isn't guaranteed, and until we get
1739 * a probe response, we won't be able to actually
1740 * do anything 802.11n related to the node.
1741 * So if this does indeed work, maybe we should hold
1742 * off on sending responses until we get the probe
1743 * response, or just default to some sensible subset
1744 * of 802.11n behaviour (eg always allow aggregation
1745 * negotiation TO us, but not FROM us, etc) so we
1746 * aren't entirely busted.
1748 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1749 ieee80211_send_probereq(ni, /* node */
1750 vap->iv_myaddr, /* SA */
1751 ni->ni_macaddr, /* DA */
1752 vap->iv_bss->ni_bssid, /* BSSID */
1753 vap->iv_bss->ni_essid,
1754 vap->iv_bss->ni_esslen); /* SSID */
1757 /* XXX not right for 802.1x/WPA */
1758 ieee80211_node_authorize(ni);
1764 ieee80211_init_neighbor(struct ieee80211_node *ni,
1765 const struct ieee80211_frame *wh,
1766 const struct ieee80211_scanparams *sp)
1768 int do_ht_setup = 0, do_vht_setup = 0;
1770 ni->ni_esslen = sp->ssid[1];
1771 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1772 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1773 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1774 ni->ni_intval = sp->bintval;
1775 ni->ni_capinfo = sp->capinfo;
1776 ni->ni_chan = ni->ni_ic->ic_curchan;
1777 ni->ni_fhdwell = sp->fhdwell;
1778 ni->ni_fhindex = sp->fhindex;
1779 ni->ni_erp = sp->erp;
1780 ni->ni_timoff = sp->timoff;
1781 #ifdef IEEE80211_SUPPORT_MESH
1782 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1783 ieee80211_mesh_init_neighbor(ni, wh, sp);
1785 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1786 ieee80211_ies_expand(&ni->ni_ies);
1787 if (ni->ni_ies.wme_ie != NULL)
1788 ni->ni_flags |= IEEE80211_NODE_QOS;
1790 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1791 #ifdef IEEE80211_SUPPORT_SUPERG
1792 if (ni->ni_ies.ath_ie != NULL)
1793 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1795 if (ni->ni_ies.htcap_ie != NULL)
1796 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1797 if (ni->ni_ies.htinfo_ie != NULL)
1798 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1800 if (ni->ni_ies.vhtcap_ie != NULL)
1801 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
1802 if (ni->ni_ies.vhtopmode_ie != NULL)
1803 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
1805 if ((ni->ni_ies.htcap_ie != NULL) &&
1806 (ni->ni_ies.htinfo_ie != NULL) &&
1807 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1811 if ((ni->ni_ies.vhtcap_ie != NULL) &&
1812 (ni->ni_ies.vhtopmode_ie != NULL) &&
1813 (ni->ni_vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1818 /* NB: must be after ni_chan is setup */
1819 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1820 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1821 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1824 * If the neighbor is HT compatible, flip that on.
1827 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1828 "%s: doing HT setup\n", __func__);
1829 ieee80211_ht_node_init(ni);
1830 ieee80211_ht_updateparams(ni,
1831 ni->ni_ies.htcap_ie,
1832 ni->ni_ies.htinfo_ie);
1835 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1836 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1841 ieee80211_vht_node_init(ni);
1842 ieee80211_vht_updateparams(ni,
1843 ni->ni_ies.vhtcap_ie,
1844 ni->ni_ies.vhtopmode_ie);
1845 ieee80211_setup_vht_rates(ni,
1846 ni->ni_ies.vhtcap_ie,
1847 ni->ni_ies.vhtopmode_ie);
1852 * Finally do the channel upgrade/change based
1853 * on the HT/VHT configuration.
1855 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1856 ni->ni_ies.htinfo_ie);
1857 ieee80211_setup_htrates(ni,
1858 ni->ni_ies.htcap_ie,
1859 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1860 ieee80211_setup_basic_htrates(ni,
1861 ni->ni_ies.htinfo_ie);
1863 ieee80211_node_setuptxparms(ni);
1864 ieee80211_ratectl_node_init(ni);
1866 /* Reassociate; we're now 11n/11ac */
1868 * XXX TODO: this is the wrong thing to do -
1869 * we're calling it with isnew=1 so the ath(4)
1870 * driver reinitialises the rate tables.
1871 * This "mostly" works for ath(4), but it won't
1872 * be right for firmware devices which allocate
1875 * So, do we just create a new node and delete
1878 if (ni->ni_ic->ic_newassoc)
1879 ni->ni_ic->ic_newassoc(ni, 1);
1884 * Do node discovery in adhoc mode on receipt of a beacon
1885 * or probe response frame. Note that for the driver's
1886 * benefit we we treat this like an association so the
1887 * driver has an opportunity to setup it's private state.
1889 struct ieee80211_node *
1890 ieee80211_add_neighbor(struct ieee80211vap *vap,
1891 const struct ieee80211_frame *wh,
1892 const struct ieee80211_scanparams *sp)
1894 struct ieee80211_node *ni;
1896 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1897 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1898 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1900 struct ieee80211com *ic = vap->iv_ic;
1902 ieee80211_init_neighbor(ni, wh, sp);
1903 if (ieee80211_iserp_rateset(&ni->ni_rates))
1904 ni->ni_flags |= IEEE80211_NODE_ERP;
1905 ieee80211_node_setuptxparms(ni);
1906 ieee80211_ratectl_node_init(ni);
1907 if (ic->ic_newassoc != NULL)
1908 ic->ic_newassoc(ni, 1);
1909 /* XXX not right for 802.1x/WPA */
1910 ieee80211_node_authorize(ni);
1915 #define IS_PROBEREQ(wh) \
1916 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1917 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1918 #define IS_BCAST_PROBEREQ(wh) \
1919 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1920 ((const struct ieee80211_frame *)(wh))->i_addr3))
1922 static __inline struct ieee80211_node *
1923 _find_rxnode(struct ieee80211_node_table *nt,
1924 const struct ieee80211_frame_min *wh)
1926 if (IS_BCAST_PROBEREQ(wh))
1927 return NULL; /* spam bcast probe req to all vap's */
1928 return ieee80211_find_node_locked(nt, wh->i_addr2);
1932 * Locate the node for sender, track state, and then pass the
1933 * (referenced) node up to the 802.11 layer for its use. Note
1934 * we can return NULL if the sender is not in the table.
1936 struct ieee80211_node *
1937 #ifdef IEEE80211_DEBUG_REFCNT
1938 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1939 const struct ieee80211_frame_min *wh, const char *func, int line)
1941 ieee80211_find_rxnode(struct ieee80211com *ic,
1942 const struct ieee80211_frame_min *wh)
1945 struct ieee80211_node_table *nt;
1946 struct ieee80211_node *ni;
1949 IEEE80211_NODE_LOCK(nt);
1950 ni = _find_rxnode(nt, wh);
1951 IEEE80211_NODE_UNLOCK(nt);
1957 * Like ieee80211_find_rxnode but use the supplied h/w
1958 * key index as a hint to locate the node in the key
1959 * mapping table. If an entry is present at the key
1960 * index we return it; otherwise do a normal lookup and
1961 * update the mapping table if the station has a unicast
1962 * key assigned to it.
1964 struct ieee80211_node *
1965 #ifdef IEEE80211_DEBUG_REFCNT
1966 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1967 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1968 const char *func, int line)
1970 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1971 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1974 struct ieee80211_node_table *nt;
1975 struct ieee80211_node *ni;
1978 IEEE80211_NODE_LOCK(nt);
1979 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1980 ni = nt->nt_keyixmap[keyix];
1984 ni = _find_rxnode(nt, wh);
1985 if (ni != NULL && nt->nt_keyixmap != NULL) {
1987 * If the station has a unicast key cache slot
1988 * assigned update the key->node mapping table.
1990 keyix = ni->ni_ucastkey.wk_rxkeyix;
1991 /* XXX can keyixmap[keyix] != NULL? */
1992 if (keyix < nt->nt_keyixmax &&
1993 nt->nt_keyixmap[keyix] == NULL) {
1994 IEEE80211_DPRINTF(ni->ni_vap,
1996 "%s: add key map entry %p<%s> refcnt %d\n",
1997 __func__, ni, ether_sprintf(ni->ni_macaddr),
1998 ieee80211_node_refcnt(ni)+1);
1999 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
2003 if (IS_BCAST_PROBEREQ(wh))
2004 ni = NULL; /* spam bcast probe req to all vap's */
2006 ieee80211_ref_node(ni);
2008 IEEE80211_NODE_UNLOCK(nt);
2012 #undef IS_BCAST_PROBEREQ
2016 * Return a reference to the appropriate node for sending
2017 * a data frame. This handles node discovery in adhoc networks.
2019 struct ieee80211_node *
2020 #ifdef IEEE80211_DEBUG_REFCNT
2021 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
2022 const uint8_t macaddr[IEEE80211_ADDR_LEN],
2023 const char *func, int line)
2025 ieee80211_find_txnode(struct ieee80211vap *vap,
2026 const uint8_t macaddr[IEEE80211_ADDR_LEN])
2029 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
2030 struct ieee80211_node *ni;
2033 * The destination address should be in the node table
2034 * unless this is a multicast/broadcast frame. We can
2035 * also optimize station mode operation, all frames go
2038 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
2039 IEEE80211_NODE_LOCK(nt);
2040 if (vap->iv_opmode == IEEE80211_M_STA ||
2041 vap->iv_opmode == IEEE80211_M_WDS ||
2042 IEEE80211_IS_MULTICAST(macaddr))
2043 ni = ieee80211_ref_node(vap->iv_bss);
2045 ni = ieee80211_find_node_locked(nt, macaddr);
2046 IEEE80211_NODE_UNLOCK(nt);
2049 if (vap->iv_opmode == IEEE80211_M_IBSS ||
2050 vap->iv_opmode == IEEE80211_M_AHDEMO) {
2052 * In adhoc mode cons up a node for the destination.
2053 * Note that we need an additional reference for the
2054 * caller to be consistent with
2055 * ieee80211_find_node_locked.
2058 * XXX TODO: this doesn't fake up 11n state; we need
2059 * to find another way to get it upgraded.
2061 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
2063 (void) ieee80211_ref_node(ni);
2065 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
2066 "no node, discard frame (%s)", __func__);
2067 vap->iv_stats.is_tx_nonode++;
2074 _ieee80211_free_node(struct ieee80211_node *ni)
2076 struct ieee80211_node_table *nt = ni->ni_table;
2079 * NB: careful about referencing the vap as it may be
2080 * gone if the last reference was held by a driver.
2081 * We know the com will always be present so it's safe
2082 * to use ni_ic below to reclaim resources.
2085 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2086 "%s %p<%s> in %s table\n", __func__, ni,
2087 ether_sprintf(ni->ni_macaddr),
2088 nt != NULL ? nt->nt_name : "<gone>");
2090 if (ni->ni_associd != 0) {
2091 struct ieee80211vap *vap = ni->ni_vap;
2092 if (vap->iv_aid_bitmap != NULL)
2093 IEEE80211_AID_CLR(vap, ni->ni_associd);
2096 ieee80211_del_node_nt(nt, ni);
2097 ni->ni_ic->ic_node_free(ni);
2101 * Clear any entry in the unicast key mapping table.
2104 node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2106 ieee80211_keyix keyix;
2108 keyix = ni->ni_ucastkey.wk_rxkeyix;
2109 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
2110 nt->nt_keyixmap[keyix] == ni) {
2111 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2112 "%s: %p<%s> clear key map entry %u\n",
2113 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
2114 nt->nt_keyixmap[keyix] = NULL;
2115 ieee80211_node_decref(ni);
2123 #ifdef IEEE80211_DEBUG_REFCNT
2124 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
2126 ieee80211_free_node(struct ieee80211_node *ni)
2129 struct ieee80211_node_table *nt = ni->ni_table;
2131 #ifdef IEEE80211_DEBUG_REFCNT
2132 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2133 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
2134 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
2137 IEEE80211_NODE_LOCK(nt);
2138 if (ieee80211_node_dectestref(ni)) {
2140 * Last reference, reclaim state.
2142 _ieee80211_free_node(ni);
2143 } else if (ieee80211_node_refcnt(ni) == 1)
2144 if (node_clear_keyixmap(nt, ni))
2145 _ieee80211_free_node(ni);
2146 IEEE80211_NODE_UNLOCK(nt);
2148 if (ieee80211_node_dectestref(ni))
2149 _ieee80211_free_node(ni);
2154 * Reclaim a unicast key and clear any key cache state.
2157 ieee80211_node_delucastkey(struct ieee80211_node *ni)
2159 struct ieee80211com *ic = ni->ni_ic;
2160 struct ieee80211_node_table *nt = &ic->ic_sta;
2161 struct ieee80211_node *nikey;
2162 ieee80211_keyix keyix;
2163 int isowned, status;
2166 * NB: We must beware of LOR here; deleting the key
2167 * can cause the crypto layer to block traffic updates
2168 * which can generate a LOR against the node table lock;
2169 * grab it here and stash the key index for our use below.
2171 * Must also beware of recursion on the node table lock.
2172 * When called from node_cleanup we may already have
2173 * the node table lock held. Unfortunately there's no
2174 * way to separate out this path so we must do this
2177 isowned = IEEE80211_NODE_IS_LOCKED(nt);
2179 IEEE80211_NODE_LOCK(nt);
2181 status = 1; /* NB: success */
2182 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
2183 keyix = ni->ni_ucastkey.wk_rxkeyix;
2184 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
2185 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
2186 nikey = nt->nt_keyixmap[keyix];
2187 nt->nt_keyixmap[keyix] = NULL;
2191 IEEE80211_NODE_UNLOCK(nt);
2193 if (nikey != NULL) {
2194 KASSERT(nikey == ni,
2195 ("key map out of sync, ni %p nikey %p", ni, nikey));
2196 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2197 "%s: delete key map entry %p<%s> refcnt %d\n",
2198 __func__, ni, ether_sprintf(ni->ni_macaddr),
2199 ieee80211_node_refcnt(ni)-1);
2200 ieee80211_free_node(ni);
2206 * Reclaim a node. If this is the last reference count then
2207 * do the normal free work. Otherwise remove it from the node
2208 * table and mark it gone by clearing the back-reference.
2211 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2214 IEEE80211_NODE_LOCK_ASSERT(nt);
2216 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2217 "%s: remove %p<%s> from %s table, refcnt %d\n",
2218 __func__, ni, ether_sprintf(ni->ni_macaddr),
2219 nt->nt_name, ieee80211_node_refcnt(ni)-1);
2221 * Clear any entry in the unicast key mapping table.
2222 * We need to do it here so rx lookups don't find it
2223 * in the mapping table even if it's not in the hash
2224 * table. We cannot depend on the mapping table entry
2225 * being cleared because the node may not be free'd.
2227 (void)node_clear_keyixmap(nt, ni);
2228 if (!ieee80211_node_dectestref(ni)) {
2230 * Other references are present, just remove the
2231 * node from the table so it cannot be found. When
2232 * the references are dropped storage will be
2235 ieee80211_del_node_nt(nt, ni);
2237 _ieee80211_free_node(ni);
2241 * Node table support.
2245 ieee80211_node_table_init(struct ieee80211com *ic,
2246 struct ieee80211_node_table *nt,
2247 const char *name, int inact, int keyixmax)
2251 IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
2252 TAILQ_INIT(&nt->nt_node);
2255 nt->nt_inact_init = inact;
2256 nt->nt_keyixmax = keyixmax;
2257 if (nt->nt_keyixmax > 0) {
2258 nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
2259 keyixmax * sizeof(struct ieee80211_node *),
2261 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2262 if (nt->nt_keyixmap == NULL)
2264 "Cannot allocate key index map with %u entries\n",
2267 nt->nt_keyixmap = NULL;
2271 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
2272 struct ieee80211vap *match)
2274 struct ieee80211_node *ni, *next;
2276 IEEE80211_NODE_LOCK(nt);
2277 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
2278 if (match != NULL && ni->ni_vap != match)
2280 /* XXX can this happen? if so need's work */
2281 if (ni->ni_associd != 0) {
2282 struct ieee80211vap *vap = ni->ni_vap;
2284 if (vap->iv_auth->ia_node_leave != NULL)
2285 vap->iv_auth->ia_node_leave(ni);
2286 if (vap->iv_aid_bitmap != NULL)
2287 IEEE80211_AID_CLR(vap, ni->ni_associd);
2289 ni->ni_wdsvap = NULL; /* clear reference */
2290 node_reclaim(nt, ni);
2292 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
2294 * Make a separate pass to clear references to this vap
2295 * held by DWDS entries. They will not be matched above
2296 * because ni_vap will point to the ap vap but we still
2297 * need to clear ni_wdsvap when the WDS vap is destroyed
2300 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
2301 if (ni->ni_wdsvap == match)
2302 ni->ni_wdsvap = NULL;
2304 IEEE80211_NODE_UNLOCK(nt);
2308 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
2310 ieee80211_node_table_reset(nt, NULL);
2311 if (nt->nt_keyixmap != NULL) {
2313 /* XXX verify all entries are NULL */
2315 for (i = 0; i < nt->nt_keyixmax; i++)
2316 if (nt->nt_keyixmap[i] != NULL)
2317 printf("%s: %s[%u] still active\n", __func__,
2320 IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
2321 nt->nt_keyixmap = NULL;
2323 IEEE80211_NODE_LOCK_DESTROY(nt);
2327 timeout_stations(void *arg __unused, struct ieee80211_node *ni)
2329 struct ieee80211com *ic = ni->ni_ic;
2330 struct ieee80211vap *vap = ni->ni_vap;
2333 * Only process stations when in RUN state. This
2334 * insures, for example, that we don't timeout an
2335 * inactive station during CAC. Note that CSA state
2336 * is actually handled in ieee80211_node_timeout as
2337 * it applies to more than timeout processing.
2339 if (vap->iv_state != IEEE80211_S_RUN)
2342 * Ignore entries for which have yet to receive an
2343 * authentication frame. These are transient and
2344 * will be reclaimed when the last reference to them
2345 * goes away (when frame xmits complete).
2347 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2348 vap->iv_opmode == IEEE80211_M_STA) &&
2349 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2352 * Free fragment if not needed anymore
2353 * (last fragment older than 1s).
2354 * XXX doesn't belong here, move to node_age
2356 if (ni->ni_rxfrag[0] != NULL &&
2357 ticks > ni->ni_rxfragstamp + hz) {
2358 m_freem(ni->ni_rxfrag[0]);
2359 ni->ni_rxfrag[0] = NULL;
2361 if (ni->ni_inact > 0) {
2363 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2364 "%s: inact %u inact_reload %u nrates %u",
2365 __func__, ni->ni_inact, ni->ni_inact_reload,
2366 ni->ni_rates.rs_nrates);
2369 * Special case ourself; we may be idle for extended periods
2370 * of time and regardless reclaiming our state is wrong.
2371 * XXX run ic_node_age
2373 /* XXX before inact decrement? */
2374 if (ni == vap->iv_bss)
2376 if (ni->ni_associd != 0 ||
2377 (vap->iv_opmode == IEEE80211_M_IBSS ||
2378 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2380 * Age/drain resources held by the station.
2382 ic->ic_node_age(ni);
2384 * Probe the station before time it out. We
2385 * send a null data frame which may not be
2386 * universally supported by drivers (need it
2387 * for ps-poll support so it should be...).
2389 * XXX don't probe the station unless we've
2390 * received a frame from them (and have
2391 * some idea of the rates they are capable
2392 * of); this will get fixed more properly
2393 * soon with better handling of the rate set.
2395 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2396 (0 < ni->ni_inact &&
2397 ni->ni_inact <= vap->iv_inact_probe) &&
2398 ni->ni_rates.rs_nrates != 0) {
2400 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2402 "probe station due to inactivity");
2404 * Grab a reference so the node cannot
2405 * be reclaimed before we send the frame.
2406 * ieee80211_send_nulldata understands
2407 * we've done this and reclaims the
2408 * ref for us as needed.
2410 /* XXX fix this (not required anymore). */
2411 ieee80211_ref_node(ni);
2413 ieee80211_send_nulldata(ni);
2418 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2419 ni->ni_inact <= 0) {
2421 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2422 "station timed out due to inactivity "
2423 "(refcnt %u)", ieee80211_node_refcnt(ni));
2425 * Send a deauthenticate frame and drop the station.
2426 * This is somewhat complicated due to reference counts
2427 * and locking. At this point a station will typically
2428 * have a reference count of 2. ieee80211_node_leave
2429 * will do a "free" of the node which will drop the
2430 * reference count. But in the meantime a reference
2431 * wil be held by the deauth frame. The actual reclaim
2432 * of the node will happen either after the tx is
2433 * completed or by ieee80211_node_leave.
2435 if (ni->ni_associd != 0) {
2436 IEEE80211_SEND_MGMT(ni,
2437 IEEE80211_FC0_SUBTYPE_DEAUTH,
2438 IEEE80211_REASON_AUTH_EXPIRE);
2440 ieee80211_node_leave(ni);
2441 vap->iv_stats.is_node_timeout++;
2446 * Timeout inactive stations and do related housekeeping.
2449 ieee80211_timeout_stations(struct ieee80211com *ic)
2451 struct ieee80211_node_table *nt = &ic->ic_sta;
2453 ieee80211_iterate_nodes(nt, timeout_stations, NULL);
2457 * Aggressively reclaim resources. This should be used
2458 * only in a critical situation to reclaim mbuf resources.
2461 ieee80211_drain(struct ieee80211com *ic)
2463 struct ieee80211_node_table *nt = &ic->ic_sta;
2464 struct ieee80211vap *vap;
2465 struct ieee80211_node *ni;
2467 IEEE80211_NODE_LOCK(nt);
2468 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2470 * Ignore entries for which have yet to receive an
2471 * authentication frame. These are transient and
2472 * will be reclaimed when the last reference to them
2473 * goes away (when frame xmits complete).
2477 * Only process stations when in RUN state. This
2478 * insures, for example, that we don't timeout an
2479 * inactive station during CAC. Note that CSA state
2480 * is actually handled in ieee80211_node_timeout as
2481 * it applies to more than timeout processing.
2483 if (vap->iv_state != IEEE80211_S_RUN)
2485 /* XXX can vap be NULL? */
2486 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2487 vap->iv_opmode == IEEE80211_M_STA) &&
2488 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2492 * XXX doesn't belong here, move to node_drain
2494 if (ni->ni_rxfrag[0] != NULL) {
2495 m_freem(ni->ni_rxfrag[0]);
2496 ni->ni_rxfrag[0] = NULL;
2499 * Drain resources held by the station.
2501 ic->ic_node_drain(ni);
2503 IEEE80211_NODE_UNLOCK(nt);
2507 * Per-ieee80211vap inactivity timer callback.
2510 ieee80211_vap_timeout(struct ieee80211vap *vap)
2513 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2515 ieee80211_vap_erp_timeout(vap);
2516 ieee80211_ht_timeout(vap);
2517 ieee80211_vht_timeout(vap);
2521 * Per-ieee80211com inactivity timer callback.
2524 ieee80211_node_timeout(void *arg)
2526 struct ieee80211com *ic = arg;
2527 struct ieee80211vap *vap;
2530 * Defer timeout processing if a channel switch is pending.
2531 * We typically need to be mute so not doing things that
2532 * might generate frames is good to handle in one place.
2533 * Suppressing the station timeout processing may extend the
2534 * lifetime of inactive stations (by not decrementing their
2535 * idle counters) but this should be ok unless the CSA is
2536 * active for an unusually long time.
2538 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2539 ieee80211_scan_timeout(ic);
2540 ieee80211_timeout_stations(ic);
2541 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2544 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2545 ieee80211_vap_timeout(vap);
2546 IEEE80211_UNLOCK(ic);
2548 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2549 ieee80211_node_timeout, ic);
2553 * The same as ieee80211_iterate_nodes(), but for one vap only.
2556 ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt,
2557 struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg)
2559 struct ieee80211_node **ni_arr;
2560 struct ieee80211_node *ni;
2565 * Iterate over the node table and save an array of ref'ed nodes.
2567 * This is separated out from calling the actual node function so that
2568 * no LORs will occur.
2570 IEEE80211_NODE_LOCK(nt);
2571 count = nt->nt_count;
2572 size = count * sizeof(struct ieee80211_node *);
2573 ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
2574 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2575 if (ni_arr == NULL) {
2576 IEEE80211_NODE_UNLOCK(nt);
2581 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2582 if (vap != NULL && ni->ni_vap != vap)
2585 ("node array overflow (vap %p, i %d, count %d)\n",
2587 ni_arr[i] = ieee80211_ref_node(ni);
2590 IEEE80211_NODE_UNLOCK(nt);
2592 for (i = 0; i < count; i++) {
2593 if (ni_arr[i] == NULL) /* end of the list */
2595 (*f)(arg, ni_arr[i]);
2596 /* ieee80211_free_node() locks by itself */
2597 ieee80211_free_node(ni_arr[i]);
2600 IEEE80211_FREE(ni_arr, M_80211_NODE);
2606 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2607 * reference in the source.
2610 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2611 ieee80211_iter_func *f, void *arg)
2613 /* XXX no way to pass error to the caller. */
2614 (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg);
2618 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2620 printf("0x%p: mac %s refcnt %d\n", ni,
2621 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2622 printf("\tauthmode %u flags 0x%x\n",
2623 ni->ni_authmode, ni->ni_flags);
2624 printf("\tassocid 0x%x txpower %u vlan %u\n",
2625 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2626 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2627 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2628 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2629 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2630 ni->ni_rxfragstamp);
2631 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2632 node_getrssi(ni), ni->ni_noise,
2633 ni->ni_intval, ni->ni_capinfo);
2634 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2635 ether_sprintf(ni->ni_bssid),
2636 ni->ni_esslen, ni->ni_essid,
2637 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2638 printf("\tinact %u inact_reload %u txrate %u\n",
2639 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2640 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2641 ni->ni_htcap, ni->ni_htparam,
2642 ni->ni_htctlchan, ni->ni_ht2ndchan);
2643 printf("\thtopmode %x htstbc %x htchw %u\n",
2644 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2645 printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n",
2646 ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2,
2647 (int) ni->ni_vht_basicmcs);
2652 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2654 ieee80211_iterate_nodes(nt,
2655 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2659 * Iterate over the VAPs and update their ERP beacon IEs.
2661 * Note this must be called from the deferred ERP update task paths.
2664 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2666 struct ieee80211vap *vap;
2668 IEEE80211_LOCK_ASSERT(ic);
2670 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2671 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2672 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2676 * Handle a station joining an 11g network.
2679 ieee80211_node_join_11g(struct ieee80211_node *ni)
2681 struct ieee80211com *ic = ni->ni_ic;
2682 struct ieee80211vap *vap = ni->ni_vap;
2684 IEEE80211_LOCK_ASSERT(ic);
2687 * Station isn't capable of short slot time. Bump
2688 * the count of long slot time stations and disable
2689 * use of short slot time. Note that the actual switch
2690 * over to long slot time use may not occur until the
2691 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2693 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2694 vap->iv_longslotsta++;
2695 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2696 "station needs long slot time, count %d",
2697 vap->iv_longslotsta);
2699 * XXX TODO: this may need all VAPs checked!
2701 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2703 * Don't force slot time when switched to turbo
2704 * mode as non-ERP stations won't be present; this
2705 * need only be done when on the normal G channel.
2707 ieee80211_vap_set_shortslottime(vap, 0);
2711 * If the new station is not an ERP station
2712 * then bump the counter and enable protection
2715 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2716 vap->iv_nonerpsta++;
2717 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2718 "station is !ERP, %d non-ERP stations associated",
2721 * If station does not support short preamble
2722 * then we must enable use of Barker preamble.
2724 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2725 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2726 "%s", "station needs long preamble");
2727 vap->iv_flags |= IEEE80211_F_USEBARKER;
2728 vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE;
2729 ieee80211_vap_update_preamble(vap);
2732 * If protection is configured and this is the first
2733 * indication we should use protection, enable it.
2735 if (vap->iv_protmode != IEEE80211_PROT_NONE &&
2736 vap->iv_nonerpsta == 1 &&
2737 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2738 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2739 "%s: enable use of protection\n", __func__);
2740 vap->iv_flags |= IEEE80211_F_USEPROT;
2741 ieee80211_vap_update_erp_protmode(vap);
2744 ni->ni_flags |= IEEE80211_NODE_ERP;
2748 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2750 struct ieee80211com *ic = ni->ni_ic;
2751 struct ieee80211vap *vap = ni->ni_vap;
2754 if (ni->ni_associd == 0) {
2757 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2759 * It would be good to search the bitmap
2760 * more efficiently, but this will do for now.
2762 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2763 if (!IEEE80211_AID_ISSET(vap, aid))
2766 if (aid >= vap->iv_max_aid) {
2767 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2768 ieee80211_node_leave(ni);
2771 ni->ni_associd = aid | 0xc000;
2772 ni->ni_jointime = time_uptime;
2774 IEEE80211_AID_SET(vap, ni->ni_associd);
2775 vap->iv_sta_assoc++;
2777 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2778 ieee80211_ht_node_join(ni);
2779 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2780 ieee80211_vht_node_join(ni);
2781 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2782 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2783 ieee80211_node_join_11g(ni);
2784 IEEE80211_UNLOCK(ic);
2791 * XXX VHT - should log VHT channel width, etc
2793 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2794 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s%s",
2795 IEEE80211_NODE_AID(ni),
2796 vap->iv_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2797 vap->iv_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2798 vap->iv_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2799 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2800 /* XXX update for VHT string */
2801 ni->ni_flags & IEEE80211_NODE_HT ?
2802 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2803 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2804 ni->ni_flags & IEEE80211_NODE_AMSDU ? " (+AMSDU)" : "",
2805 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2806 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2807 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2808 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2809 ", fast-frames" : "",
2810 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2814 ieee80211_node_setuptxparms(ni);
2815 ieee80211_ratectl_node_init(ni);
2816 /* give driver a chance to setup state like ni_txrate */
2817 if (ic->ic_newassoc != NULL)
2818 ic->ic_newassoc(ni, newassoc);
2819 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2820 /* tell the authenticator about new station */
2821 if (vap->iv_auth->ia_node_join != NULL)
2822 vap->iv_auth->ia_node_join(ni);
2823 ieee80211_notify_node_join(ni,
2824 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2828 disable_protection(struct ieee80211vap *vap)
2830 struct ieee80211com *ic = vap->iv_ic;
2832 KASSERT(vap->iv_nonerpsta == 0 &&
2833 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2834 ("%d non ERP stations, flags 0x%x", vap->iv_nonerpsta,
2835 vap->iv_flags_ext));
2837 vap->iv_flags &= ~IEEE80211_F_USEPROT;
2838 /* XXX verify mode? */
2839 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2840 vap->iv_flags |= IEEE80211_F_SHPREAMBLE;
2841 vap->iv_flags &= ~IEEE80211_F_USEBARKER;
2843 ieee80211_vap_update_erp_protmode(vap);
2844 ieee80211_vap_update_preamble(vap);
2848 * Handle a station leaving an 11g network.
2851 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2853 struct ieee80211com *ic = ni->ni_ic;
2854 struct ieee80211vap *vap = ni->ni_vap;
2856 IEEE80211_LOCK_ASSERT(ic);
2858 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2859 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2860 ic->ic_bsschan->ic_flags));
2863 * If a long slot station do the slot time bookkeeping.
2865 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2866 KASSERT(vap->iv_longslotsta > 0,
2867 ("bogus long slot station count %d", vap->iv_longslotsta));
2868 vap->iv_longslotsta--;
2869 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2870 "long slot time station leaves, count now %d",
2871 vap->iv_longslotsta);
2873 * XXX TODO: this may need all VAPs checked!
2875 if (vap->iv_longslotsta == 0) {
2877 * Re-enable use of short slot time if supported
2878 * and not operating in IBSS mode (per spec).
2880 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2881 ic->ic_opmode != IEEE80211_M_IBSS) {
2882 IEEE80211_DPRINTF(ni->ni_vap,
2883 IEEE80211_MSG_ASSOC,
2884 "%s: re-enable use of short slot time\n",
2886 ieee80211_vap_set_shortslottime(vap, 1);
2891 * If a non-ERP station do the protection-related bookkeeping.
2893 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2894 KASSERT(vap->iv_nonerpsta > 0,
2895 ("bogus non-ERP station count %d", vap->iv_nonerpsta));
2896 vap->iv_nonerpsta--;
2897 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2898 "non-ERP station leaves, count now %d%s", vap->iv_nonerpsta,
2899 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2900 " (non-ERP sta present)" : "");
2901 if (vap->iv_nonerpsta == 0 &&
2902 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2903 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2904 "%s: disable use of protection\n", __func__);
2905 disable_protection(vap);
2911 * Time out presence of an overlapping bss with non-ERP
2912 * stations. When operating in hostap mode we listen for
2913 * beacons from other stations and if we identify a non-ERP
2914 * station is present we enable protection. To identify
2915 * when all non-ERP stations are gone we time out this
2919 ieee80211_vap_erp_timeout(struct ieee80211vap *vap)
2922 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2924 if ((vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2925 ieee80211_time_after(ticks, vap->iv_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2926 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
2927 "%s", "age out non-ERP sta present on channel");
2928 vap->iv_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2929 if (vap->iv_nonerpsta == 0)
2930 disable_protection(vap);
2935 * Handle bookkeeping for station deauthentication/disassociation
2936 * when operating as an ap.
2939 ieee80211_node_leave(struct ieee80211_node *ni)
2941 struct ieee80211com *ic = ni->ni_ic;
2942 struct ieee80211vap *vap = ni->ni_vap;
2943 struct ieee80211_node_table *nt = ni->ni_table;
2945 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2946 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2948 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2949 ("unexpected operating mode %u", vap->iv_opmode));
2951 * If node wasn't previously associated all
2952 * we need to do is reclaim the reference.
2954 /* XXX ibss mode bypasses 11g and notification */
2955 if (ni->ni_associd == 0)
2958 * Tell the authenticator the station is leaving.
2959 * Note that we must do this before yanking the
2960 * association id as the authenticator uses the
2961 * associd to locate it's state block.
2963 if (vap->iv_auth->ia_node_leave != NULL)
2964 vap->iv_auth->ia_node_leave(ni);
2967 IEEE80211_AID_CLR(vap, ni->ni_associd);
2968 vap->iv_sta_assoc--;
2970 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2971 ieee80211_vht_node_leave(ni);
2972 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2973 ieee80211_ht_node_leave(ni);
2974 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2975 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2976 ieee80211_node_leave_11g(ni);
2977 IEEE80211_UNLOCK(ic);
2979 * Cleanup station state. In particular clear various
2980 * state that might otherwise be reused if the node
2981 * is reused before the reference count goes to zero
2982 * (and memory is reclaimed).
2984 ieee80211_sta_leave(ni);
2987 * Remove the node from any table it's recorded in and
2988 * drop the caller's reference. Removal from the table
2989 * is important to insure the node is not reprocessed
2993 IEEE80211_NODE_LOCK(nt);
2994 node_reclaim(nt, ni);
2995 IEEE80211_NODE_UNLOCK(nt);
2997 ieee80211_free_node(ni);
3002 uint32_t rssi_total;
3006 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
3008 struct rssiinfo *info = arg;
3009 struct ieee80211vap *vap = ni->ni_vap;
3012 /* only associated stations */
3013 if (ni->ni_associd == 0)
3015 rssi = vap->iv_ic->ic_node_getrssi(ni);
3017 info->rssi_samples++;
3018 info->rssi_total += rssi;
3023 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
3025 struct rssiinfo *info = arg;
3026 struct ieee80211vap *vap = ni->ni_vap;
3029 /* only neighbors */
3030 /* XXX check bssid */
3031 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
3033 rssi = vap->iv_ic->ic_node_getrssi(ni);
3035 info->rssi_samples++;
3036 info->rssi_total += rssi;
3040 #ifdef IEEE80211_SUPPORT_MESH
3042 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
3044 struct rssiinfo *info = arg;
3045 struct ieee80211vap *vap = ni->ni_vap;
3048 /* only neighbors that peered successfully */
3049 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
3051 rssi = vap->iv_ic->ic_node_getrssi(ni);
3053 info->rssi_samples++;
3054 info->rssi_total += rssi;
3057 #endif /* IEEE80211_SUPPORT_MESH */
3060 ieee80211_getrssi(struct ieee80211vap *vap)
3062 #define NZ(x) ((x) == 0 ? 1 : (x))
3063 struct ieee80211com *ic = vap->iv_ic;
3064 struct rssiinfo info;
3066 info.rssi_total = 0;
3067 info.rssi_samples = 0;
3068 switch (vap->iv_opmode) {
3069 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
3070 case IEEE80211_M_AHDEMO: /* average of all neighbors */
3071 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi,
3074 case IEEE80211_M_HOSTAP: /* average of all associated stations */
3075 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi,
3078 #ifdef IEEE80211_SUPPORT_MESH
3079 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
3080 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi,
3084 case IEEE80211_M_MONITOR: /* XXX */
3085 case IEEE80211_M_STA: /* use stats from associated ap */
3087 if (vap->iv_bss != NULL)
3088 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
3089 info.rssi_samples = 1;
3092 return info.rssi_total / NZ(info.rssi_samples);
3097 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
3100 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
3102 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
3103 /* for non-station mode return avg'd rssi accounting */
3104 if (vap->iv_opmode != IEEE80211_M_STA)
3105 *rssi = ieee80211_getrssi(vap);