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 */
579 ieee80211_ibss_merge_check(struct ieee80211_node *ni)
581 struct ieee80211vap *vap = ni->ni_vap;
583 if (ni == vap->iv_bss ||
584 IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
585 /* unchanged, nothing to do */
589 if (!check_bss(vap, ni)) {
590 /* capabilities mismatch */
591 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
592 "%s: merge failed, capabilities mismatch\n", __func__);
593 #ifdef IEEE80211_DEBUG
594 if (ieee80211_msg_assoc(vap))
595 check_bss_debug(vap, ni);
597 vap->iv_stats.is_ibss_capmismatch++;
605 * Check if the given node should populate the node table.
607 * We need to be in "see all beacons for all ssids" mode in order
608 * to do IBSS merges, however this means we will populate nodes for
609 * /all/ IBSS SSIDs, versus just the one we care about.
611 * So this check ensures the node can actually belong to our IBSS
612 * configuration. For now it simply checks the SSID.
615 ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
616 const struct ieee80211_scanparams *scan)
618 struct ieee80211vap *vap = ni->ni_vap;
622 * If we have no SSID and no scan SSID, return OK.
624 if (vap->iv_des_nssid == 0 && scan->ssid == NULL)
628 * If we have one of (SSID, scan SSID) then return error.
630 if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL))
634 * Double-check - we need scan SSID.
636 if (scan->ssid == NULL)
640 * Check if the scan SSID matches the SSID list for the VAP.
642 for (i = 0; i < vap->iv_des_nssid; i++) {
644 /* Sanity length check */
645 if (vap->iv_des_ssid[i].len != scan->ssid[1])
648 /* Note: SSID in the scan entry is the IE format */
649 if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2,
650 vap->iv_des_ssid[i].len) == 0)
661 * Handle 802.11 ad hoc network merge. The
662 * convention, set by the Wireless Ethernet Compatibility Alliance
663 * (WECA), is that an 802.11 station will change its BSSID to match
664 * the "oldest" 802.11 ad hoc network, on the same channel, that
665 * has the station's desired SSID. The "oldest" 802.11 network
666 * sends beacons with the greatest TSF timestamp.
668 * The caller is assumed to validate TSF's before attempting a merge.
670 * Return !0 if the BSSID changed, 0 otherwise.
673 ieee80211_ibss_merge(struct ieee80211_node *ni)
675 #ifdef IEEE80211_DEBUG
676 struct ieee80211vap *vap = ni->ni_vap;
679 if (! ieee80211_ibss_merge_check(ni))
682 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
683 "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
684 ether_sprintf(ni->ni_bssid),
685 vap->iv_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
686 vap->iv_flags&IEEE80211_F_SHSLOT ? "short" : "long",
687 vap->iv_flags&IEEE80211_F_USEPROT ? ", protection" : ""
689 return ieee80211_sta_join1(ieee80211_ref_node(ni));
693 * Calculate HT channel promotion flags for all vaps.
694 * This assumes ni_chan have been setup for each vap.
697 gethtadjustflags(struct ieee80211com *ic)
699 struct ieee80211vap *vap;
704 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
705 if (vap->iv_state < IEEE80211_S_RUN)
707 switch (vap->iv_opmode) {
708 case IEEE80211_M_WDS:
709 case IEEE80211_M_STA:
710 case IEEE80211_M_AHDEMO:
711 case IEEE80211_M_HOSTAP:
712 case IEEE80211_M_IBSS:
713 case IEEE80211_M_MBSS:
714 flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
724 * Calculate VHT channel promotion flags for all vaps.
725 * This assumes ni_chan have been setup for each vap.
728 getvhtadjustflags(struct ieee80211com *ic)
730 struct ieee80211vap *vap;
735 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
736 if (vap->iv_state < IEEE80211_S_RUN)
738 switch (vap->iv_opmode) {
739 case IEEE80211_M_WDS:
740 case IEEE80211_M_STA:
741 case IEEE80211_M_AHDEMO:
742 case IEEE80211_M_HOSTAP:
743 case IEEE80211_M_IBSS:
744 case IEEE80211_M_MBSS:
745 flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan);
755 * Check if the current channel needs to change based on whether
756 * any vap's are using HT20/HT40. This is used to sync the state
757 * of ic_curchan after a channel width change on a running vap.
759 * Same applies for VHT.
762 ieee80211_sync_curchan(struct ieee80211com *ic)
764 struct ieee80211_channel *c;
766 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
767 c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic));
769 if (c != ic->ic_curchan) {
771 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
772 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
773 IEEE80211_UNLOCK(ic);
774 ic->ic_set_channel(ic);
775 ieee80211_radiotap_chan_change(ic);
781 * Setup the current channel. The request channel may be
782 * promoted if other vap's are operating with HT20/HT40.
785 ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
787 if (ic->ic_htcaps & IEEE80211_HTC_HT) {
788 int flags = gethtadjustflags(ic);
790 * Check for channel promotion required to support the
791 * set of running vap's. This assumes we are called
792 * after ni_chan is setup for each vap.
795 /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
796 if (flags > ieee80211_htchanflags(c))
797 c = ieee80211_ht_adjust_channel(ic, c, flags);
801 * VHT promotion - this will at least promote to VHT20/40
802 * based on what HT has done; it may further promote the
803 * channel to VHT80 or above.
805 if (ic->ic_vhtcaps != 0) {
806 int flags = getvhtadjustflags(ic);
807 if (flags > ieee80211_vhtchanflags(c))
808 c = ieee80211_vht_adjust_channel(ic, c, flags);
811 ic->ic_bsschan = ic->ic_curchan = c;
812 ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
813 ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
817 * Change the current channel. The channel change is guaranteed to have
818 * happened before the next state change.
821 ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
823 ieee80211_setupcurchan(ic, c);
824 ieee80211_runtask(ic, &ic->ic_chan_task);
828 ieee80211_update_chw(struct ieee80211com *ic)
831 ieee80211_setupcurchan(ic, ic->ic_curchan);
832 ieee80211_runtask(ic, &ic->ic_chw_task);
836 * Join the specified IBSS/BSS network. The node is assumed to
837 * be passed in with a held reference.
840 ieee80211_sta_join1(struct ieee80211_node *selbs)
842 struct ieee80211vap *vap = selbs->ni_vap;
843 struct ieee80211com *ic = selbs->ni_ic;
844 struct ieee80211_node *obss;
848 * Committed to selbs, setup state.
852 * Check if old+new node have the same address in which
853 * case we can reassociate when operating in sta mode.
855 canreassoc = (obss != NULL &&
856 vap->iv_state == IEEE80211_S_RUN &&
857 IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
858 vap->iv_bss = selbs; /* NB: caller assumed to bump refcnt */
860 struct ieee80211_node_table *nt = obss->ni_table;
862 copy_bss(selbs, obss);
863 ieee80211_node_decref(obss); /* iv_bss reference */
865 IEEE80211_NODE_LOCK(nt);
866 node_reclaim(nt, obss); /* station table reference */
867 IEEE80211_NODE_UNLOCK(nt);
869 obss = NULL; /* NB: guard against later use */
873 * Delete unusable rates; we've already checked
874 * that the negotiated rate set is acceptable.
876 ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
877 IEEE80211_F_DODEL | IEEE80211_F_JOIN);
879 ieee80211_setcurchan(ic, selbs->ni_chan);
881 * Set the erp state (mostly the slot time) to deal with
882 * the auto-select case; this should be redundant if the
885 ieee80211_vap_reset_erp(vap);
886 ieee80211_wme_initparams(vap);
888 if (vap->iv_opmode == IEEE80211_M_STA) {
891 ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
894 * Act as if we received a DEAUTH frame in case we
895 * are invoked from the RUN state. This will cause
896 * us to try to re-authenticate if we are operating
899 ieee80211_new_state(vap, IEEE80211_S_AUTH,
900 IEEE80211_FC0_SUBTYPE_DEAUTH);
903 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
908 ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
909 const struct ieee80211_scan_entry *se)
911 struct ieee80211com *ic = vap->iv_ic;
912 struct ieee80211_node *ni;
915 ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
922 * Expand scan state into node's format.
923 * XXX may not need all this stuff
925 IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
926 ni->ni_esslen = se->se_ssid[1];
927 memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
928 ni->ni_tstamp.tsf = se->se_tstamp.tsf;
929 ni->ni_intval = se->se_intval;
930 ni->ni_capinfo = se->se_capinfo;
932 ni->ni_timoff = se->se_timoff;
933 ni->ni_fhdwell = se->se_fhdwell;
934 ni->ni_fhindex = se->se_fhindex;
935 ni->ni_erp = se->se_erp;
936 IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
937 ni->ni_noise = se->se_noise;
938 if (vap->iv_opmode == IEEE80211_M_STA) {
939 /* NB: only infrastructure mode requires an associd */
940 ni->ni_flags |= IEEE80211_NODE_ASSOCID;
943 if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
944 ieee80211_ies_expand(&ni->ni_ies);
945 #ifdef IEEE80211_SUPPORT_SUPERG
946 if (ni->ni_ies.ath_ie != NULL)
947 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
949 if (ni->ni_ies.htcap_ie != NULL)
950 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
951 if (ni->ni_ies.htinfo_ie != NULL)
952 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
953 #ifdef IEEE80211_SUPPORT_MESH
954 if (ni->ni_ies.meshid_ie != NULL)
955 ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
957 #ifdef IEEE80211_SUPPORT_TDMA
958 if (ni->ni_ies.tdma_ie != NULL)
959 ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
961 if (ni->ni_ies.vhtcap_ie != NULL)
962 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
963 if (ni->ni_ies.vhtopmode_ie != NULL)
964 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
966 /* XXX parse BSSLOAD IE */
967 /* XXX parse TXPWRENV IE */
968 /* XXX parse APCHANREP IE */
971 vap->iv_dtim_period = se->se_dtimperiod;
972 vap->iv_dtim_count = 0;
974 /* NB: must be after ni_chan is setup */
975 ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
977 if (ieee80211_iserp_rateset(&ni->ni_rates))
978 ni->ni_flags |= IEEE80211_NODE_ERP;
981 * Setup HT state for this node if it's available, otherwise
982 * non-STA modes won't pick this state up.
984 * For IBSS and related modes that don't go through an
985 * association request/response, the only appropriate place
986 * to setup the HT state is here.
988 if (ni->ni_ies.htinfo_ie != NULL &&
989 ni->ni_ies.htcap_ie != NULL &&
990 vap->iv_flags_ht & IEEE80211_FHT_HT) {
991 ieee80211_ht_node_init(ni);
992 ieee80211_ht_updateparams(ni,
994 ni->ni_ies.htinfo_ie);
999 * Setup VHT state for this node if it's available.
1000 * Same as the above.
1002 * For now, don't allow 2GHz VHT operation.
1004 if (ni->ni_ies.vhtopmode_ie != NULL &&
1005 ni->ni_ies.vhtcap_ie != NULL &&
1006 vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1007 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1008 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1013 ieee80211_vht_node_init(ni);
1014 ieee80211_vht_updateparams(ni,
1015 ni->ni_ies.vhtcap_ie,
1016 ni->ni_ies.vhtopmode_ie);
1017 ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie,
1018 ni->ni_ies.vhtopmode_ie);
1023 /* Finally do the node channel change */
1025 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1026 ni->ni_ies.htinfo_ie);
1027 ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
1028 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1029 ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
1032 /* XXX else check for ath FF? */
1033 /* XXX QoS? Difficult given that WME config is specific to a master */
1035 ieee80211_node_setuptxparms(ni);
1036 ieee80211_ratectl_node_init(ni);
1038 return ieee80211_sta_join1(ieee80211_ref_node(ni));
1042 * Leave the specified IBSS/BSS network. The node is assumed to
1043 * be passed in with a held reference.
1046 ieee80211_sta_leave(struct ieee80211_node *ni)
1048 struct ieee80211com *ic = ni->ni_ic;
1050 ic->ic_node_cleanup(ni);
1051 ieee80211_notify_node_leave(ni);
1055 * Send a deauthenticate frame and drop the station.
1058 ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
1060 /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
1061 ieee80211_ref_node(ni);
1062 if (ni->ni_associd != 0)
1063 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
1064 ieee80211_node_leave(ni);
1065 ieee80211_free_node(ni);
1068 static struct ieee80211_node *
1069 node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1071 struct ieee80211_node *ni;
1073 ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node),
1074 M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1079 node_init(struct ieee80211_node *ni)
1085 * Initialize an ie blob with the specified data. If previous
1086 * data exists re-use the data block. As a side effect we clear
1087 * all references to specific ie's; the caller is required to
1091 ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
1093 /* NB: assumes data+len are the last fields */
1094 memset(ies, 0, offsetof(struct ieee80211_ies, data));
1095 if (ies->data != NULL && ies->len != len) {
1096 /* data size changed */
1097 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1100 if (ies->data == NULL) {
1101 ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
1102 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
1103 if (ies->data == NULL) {
1105 /* NB: pointers have already been zero'd above */
1109 memcpy(ies->data, data, len);
1115 * Reclaim storage for an ie blob.
1118 ieee80211_ies_cleanup(struct ieee80211_ies *ies)
1120 if (ies->data != NULL)
1121 IEEE80211_FREE(ies->data, M_80211_NODE_IE);
1125 * Expand an ie blob data contents and to fillin individual
1126 * ie pointers. The data blob is assumed to be well-formed;
1127 * we don't do any validity checking of ie lengths.
1130 ieee80211_ies_expand(struct ieee80211_ies *ies)
1139 case IEEE80211_ELEMID_VENDOR:
1142 else if (iswmeoui(ie))
1144 #ifdef IEEE80211_SUPPORT_SUPERG
1145 else if (isatherosoui(ie))
1148 #ifdef IEEE80211_SUPPORT_TDMA
1149 else if (istdmaoui(ie))
1153 case IEEE80211_ELEMID_RSN:
1156 case IEEE80211_ELEMID_HTCAP:
1159 case IEEE80211_ELEMID_HTINFO:
1160 ies->htinfo_ie = ie;
1162 #ifdef IEEE80211_SUPPORT_MESH
1163 case IEEE80211_ELEMID_MESHID:
1164 ies->meshid_ie = ie;
1167 case IEEE80211_ELEMID_VHT_CAP:
1168 ies->vhtcap_ie = ie;
1170 case IEEE80211_ELEMID_VHT_OPMODE:
1171 ies->vhtopmode_ie = ie;
1173 case IEEE80211_ELEMID_VHT_PWR_ENV:
1174 ies->vhtpwrenv_ie = ie;
1176 case IEEE80211_ELEMID_BSSLOAD:
1177 ies->bssload_ie = ie;
1179 case IEEE80211_ELEMID_APCHANREP:
1180 ies->apchanrep_ie = ie;
1189 * Reclaim any resources in a node and reset any critical
1190 * state. Typically nodes are free'd immediately after,
1191 * but in some cases the storage may be reused so we need
1192 * to insure consistent state (should probably fix that).
1195 node_cleanup(struct ieee80211_node *ni)
1197 struct ieee80211vap *vap = ni->ni_vap;
1198 struct ieee80211com *ic = ni->ni_ic;
1201 /* NB: preserve ni_table */
1202 if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
1203 if (vap->iv_opmode != IEEE80211_M_STA)
1205 ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
1206 IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
1207 "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
1210 * Cleanup any VHT and HT-related state.
1212 if (ni->ni_flags & IEEE80211_NODE_VHT)
1213 ieee80211_vht_node_cleanup(ni);
1214 if (ni->ni_flags & IEEE80211_NODE_HT)
1215 ieee80211_ht_node_cleanup(ni);
1216 #ifdef IEEE80211_SUPPORT_SUPERG
1217 /* Always do FF node cleanup; for A-MSDU */
1218 ieee80211_ff_node_cleanup(ni);
1220 #ifdef IEEE80211_SUPPORT_MESH
1222 * Cleanup any mesh-related state.
1224 if (vap->iv_opmode == IEEE80211_M_MBSS)
1225 ieee80211_mesh_node_cleanup(ni);
1228 * Clear any staging queue entries.
1230 ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
1233 * Clear AREF flag that marks the authorization refcnt bump
1234 * has happened. This is probably not needed as the node
1235 * should always be removed from the table so not found but
1236 * do it just in case.
1237 * Likewise clear the ASSOCID flag as these flags are intended
1238 * to be managed in tandem.
1240 ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
1243 * Drain power save queue and, if needed, clear TIM.
1245 if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
1246 vap->iv_set_tim(ni, 0);
1249 if (ni->ni_challenge != NULL) {
1250 IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
1251 ni->ni_challenge = NULL;
1254 * Preserve SSID, WPA, and WME ie's so the bss node is
1255 * reusable during a re-auth/re-assoc state transition.
1256 * If we remove these data they will not be recreated
1257 * because they come from a probe-response or beacon frame
1258 * which cannot be expected prior to the association-response.
1259 * This should not be an issue when operating in other modes
1260 * as stations leaving always go through a full state transition
1261 * which will rebuild this state.
1263 * XXX does this leave us open to inheriting old state?
1265 for (i = 0; i < nitems(ni->ni_rxfrag); i++)
1266 if (ni->ni_rxfrag[i] != NULL) {
1267 m_freem(ni->ni_rxfrag[i]);
1268 ni->ni_rxfrag[i] = NULL;
1271 * Must be careful here to remove any key map entry w/o a LOR.
1273 ieee80211_node_delucastkey(ni);
1277 node_free(struct ieee80211_node *ni)
1279 struct ieee80211com *ic = ni->ni_ic;
1281 ieee80211_ratectl_node_deinit(ni);
1282 ic->ic_node_cleanup(ni);
1283 ieee80211_ies_cleanup(&ni->ni_ies);
1284 ieee80211_psq_cleanup(&ni->ni_psq);
1285 IEEE80211_FREE(ni, M_80211_NODE);
1289 node_age(struct ieee80211_node *ni)
1291 struct ieee80211vap *vap = ni->ni_vap;
1294 * Age frames on the power save queue.
1296 if (ieee80211_node_psq_age(ni) != 0 &&
1297 ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
1298 vap->iv_set_tim(ni, 0);
1300 * Age out HT resources (e.g. frames on the
1301 * A-MPDU reorder queues).
1303 if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
1304 ieee80211_ht_node_age(ni);
1308 node_getrssi(const struct ieee80211_node *ni)
1310 uint32_t avgrssi = ni->ni_avgrssi;
1313 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
1315 rssi = IEEE80211_RSSI_GET(avgrssi);
1316 return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1320 node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
1322 *rssi = node_getrssi(ni);
1323 *noise = ni->ni_noise;
1327 node_getmimoinfo(const struct ieee80211_node *ni,
1328 struct ieee80211_mimo_info *info)
1334 bzero(info, sizeof(*info));
1336 for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) {
1337 /* Note: for now, just pri20 channel info */
1338 avgrssi = ni->ni_mimo_rssi_ctl[i];
1339 if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
1340 info->ch[i].rssi[0] = 0;
1342 rssi = IEEE80211_RSSI_GET(avgrssi);
1343 info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
1345 info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i];
1348 /* XXX ext radios? */
1354 ieee80211_add_node_nt(struct ieee80211_node_table *nt,
1355 struct ieee80211_node *ni)
1357 struct ieee80211com *ic = nt->nt_ic;
1360 IEEE80211_NODE_LOCK_ASSERT(nt);
1362 hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr);
1363 (void) ic; /* XXX IEEE80211_NODE_HASH */
1364 TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
1365 LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
1371 ieee80211_del_node_nt(struct ieee80211_node_table *nt,
1372 struct ieee80211_node *ni)
1375 IEEE80211_NODE_LOCK_ASSERT(nt);
1377 TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
1378 LIST_REMOVE(ni, ni_hash);
1380 KASSERT(nt->nt_count >= 0,
1381 ("nt_count is negative (%d)!\n", nt->nt_count));
1382 ni->ni_table = NULL;
1385 struct ieee80211_node *
1386 ieee80211_alloc_node(struct ieee80211_node_table *nt,
1387 struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
1389 struct ieee80211com *ic = nt->nt_ic;
1390 struct ieee80211_node *ni;
1392 ni = ic->ic_node_alloc(vap, macaddr);
1394 vap->iv_stats.is_rx_nodealloc++;
1398 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1399 "%s %p<%s> in %s table\n", __func__, ni,
1400 ether_sprintf(macaddr), nt->nt_name);
1402 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1403 ieee80211_node_initref(ni); /* mark referenced */
1404 ni->ni_chan = IEEE80211_CHAN_ANYC;
1405 ni->ni_authmode = IEEE80211_AUTH_OPEN;
1406 ni->ni_txpower = ic->ic_txpowlimit; /* max power */
1407 ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1408 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
1409 ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
1410 ni->ni_inact_reload = nt->nt_inact_init;
1411 ni->ni_inact = ni->ni_inact_reload;
1412 ni->ni_ath_defkeyix = 0x7fff;
1413 ieee80211_psq_init(&ni->ni_psq, "unknown");
1414 #ifdef IEEE80211_SUPPORT_MESH
1415 if (vap->iv_opmode == IEEE80211_M_MBSS)
1416 ieee80211_mesh_node_init(vap, ni);
1418 IEEE80211_NODE_LOCK(nt);
1419 ieee80211_add_node_nt(nt, ni);
1422 IEEE80211_NODE_UNLOCK(nt);
1424 /* handle failure; free node state */
1425 if (ic->ic_node_init(ni) != 0) {
1426 vap->iv_stats.is_rx_nodealloc++;
1427 ieee80211_psq_cleanup(&ni->ni_psq);
1428 ieee80211_ratectl_node_deinit(ni);
1429 _ieee80211_free_node(ni);
1433 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
1434 "%s: inact_reload %u", __func__, ni->ni_inact_reload);
1440 * Craft a temporary node suitable for sending a management frame
1441 * to the specified station. We craft only as much state as we
1442 * need to do the work since the node will be immediately reclaimed
1443 * once the send completes.
1445 struct ieee80211_node *
1446 ieee80211_tmp_node(struct ieee80211vap *vap,
1447 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1449 struct ieee80211com *ic = vap->iv_ic;
1450 struct ieee80211_node *ni;
1452 ni = ic->ic_node_alloc(vap, macaddr);
1454 struct ieee80211_node *bss = vap->iv_bss;
1456 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
1457 "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
1459 ni->ni_table = NULL; /* NB: pedantic */
1460 ni->ni_ic = ic; /* NB: needed to set channel */
1463 IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
1464 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1465 ieee80211_node_initref(ni); /* mark referenced */
1466 /* NB: required by ieee80211_fix_rate */
1467 ieee80211_node_set_chan(ni, bss->ni_chan);
1468 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
1469 IEEE80211_KEYIX_NONE);
1470 ni->ni_txpower = bss->ni_txpower;
1471 /* XXX optimize away */
1472 ieee80211_psq_init(&ni->ni_psq, "unknown");
1474 ieee80211_ratectl_node_init(ni);
1476 /* handle failure; free node state */
1477 if (ic->ic_node_init(ni) != 0) {
1478 vap->iv_stats.is_rx_nodealloc++;
1479 ieee80211_psq_cleanup(&ni->ni_psq);
1480 ieee80211_ratectl_node_deinit(ni);
1481 _ieee80211_free_node(ni);
1487 vap->iv_stats.is_rx_nodealloc++;
1492 struct ieee80211_node *
1493 ieee80211_dup_bss(struct ieee80211vap *vap,
1494 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1496 struct ieee80211com *ic = vap->iv_ic;
1497 struct ieee80211_node *ni;
1499 ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
1501 struct ieee80211_node *bss = vap->iv_bss;
1503 * Inherit from iv_bss.
1506 IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
1507 ieee80211_node_set_chan(ni, bss->ni_chan);
1513 * Create a bss node for a legacy WDS vap. The far end does
1514 * not associate so we just create create a new node and
1515 * simulate an association. The caller is responsible for
1516 * installing the node as the bss node and handling any further
1517 * setup work like authorizing the port.
1519 struct ieee80211_node *
1520 ieee80211_node_create_wds(struct ieee80211vap *vap,
1521 const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
1523 struct ieee80211com *ic = vap->iv_ic;
1524 struct ieee80211_node *ni;
1526 /* XXX check if node already in sta table? */
1527 ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
1529 ni->ni_wdsvap = vap;
1530 IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
1532 * Inherit any manually configured settings.
1534 copy_bss(ni, vap->iv_bss);
1535 ieee80211_node_set_chan(ni, chan);
1536 /* NB: propagate ssid so available to WPA supplicant */
1537 ni->ni_esslen = vap->iv_des_ssid[0].len;
1538 memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
1539 /* NB: no associd for peer */
1541 * There are no management frames to use to
1542 * discover neighbor capabilities, so blindly
1543 * propagate the local configuration.
1545 if (vap->iv_flags & IEEE80211_F_WME)
1546 ni->ni_flags |= IEEE80211_NODE_QOS;
1547 #ifdef IEEE80211_SUPPORT_SUPERG
1548 if (vap->iv_flags & IEEE80211_F_FF)
1549 ni->ni_flags |= IEEE80211_NODE_FF;
1552 if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
1553 (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1555 * Device is HT-capable and HT is enabled for
1556 * the vap; setup HT operation. On return
1557 * ni_chan will be adjusted to an HT channel.
1559 ieee80211_ht_wds_init(ni);
1560 if (vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
1561 printf("%s: TODO: vht_wds_init\n", __func__);
1564 struct ieee80211_channel *c = ni->ni_chan;
1566 * Force a legacy channel to be used.
1568 c = ieee80211_find_channel(ic,
1569 c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
1570 KASSERT(c != NULL, ("no legacy channel, %u/%x",
1571 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
1578 struct ieee80211_node *
1579 #ifdef IEEE80211_DEBUG_REFCNT
1580 ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
1581 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1583 ieee80211_find_node_locked(struct ieee80211_node_table *nt,
1584 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1587 struct ieee80211_node *ni;
1590 IEEE80211_NODE_LOCK_ASSERT(nt);
1592 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1593 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1594 if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1595 ieee80211_ref_node(ni); /* mark referenced */
1596 #ifdef IEEE80211_DEBUG_REFCNT
1597 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1598 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1600 ni, ether_sprintf(ni->ni_macaddr),
1601 ieee80211_node_refcnt(ni));
1609 struct ieee80211_node *
1610 #ifdef IEEE80211_DEBUG_REFCNT
1611 ieee80211_find_node_debug(struct ieee80211_node_table *nt,
1612 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1614 ieee80211_find_node(struct ieee80211_node_table *nt,
1615 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1618 struct ieee80211_node *ni;
1620 IEEE80211_NODE_LOCK(nt);
1621 ni = ieee80211_find_node_locked(nt, macaddr);
1622 IEEE80211_NODE_UNLOCK(nt);
1626 struct ieee80211_node *
1627 #ifdef IEEE80211_DEBUG_REFCNT
1628 ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
1629 const struct ieee80211vap *vap,
1630 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1632 ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
1633 const struct ieee80211vap *vap,
1634 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1637 struct ieee80211_node *ni;
1640 IEEE80211_NODE_LOCK_ASSERT(nt);
1642 hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
1643 LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
1644 if (ni->ni_vap == vap &&
1645 IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
1646 ieee80211_ref_node(ni); /* mark referenced */
1647 #ifdef IEEE80211_DEBUG_REFCNT
1648 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
1649 "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
1651 ni, ether_sprintf(ni->ni_macaddr),
1652 ieee80211_node_refcnt(ni));
1660 struct ieee80211_node *
1661 #ifdef IEEE80211_DEBUG_REFCNT
1662 ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
1663 const struct ieee80211vap *vap,
1664 const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
1666 ieee80211_find_vap_node(struct ieee80211_node_table *nt,
1667 const struct ieee80211vap *vap,
1668 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1671 struct ieee80211_node *ni;
1673 IEEE80211_NODE_LOCK(nt);
1674 ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
1675 IEEE80211_NODE_UNLOCK(nt);
1680 * Fake up a node; this handles node discovery in adhoc mode.
1681 * Note that for the driver's benefit we we treat this like
1682 * an association so the driver has an opportunity to setup
1683 * it's private state.
1685 struct ieee80211_node *
1686 ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
1687 const uint8_t macaddr[IEEE80211_ADDR_LEN])
1689 struct ieee80211_node *ni;
1691 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
1692 "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
1693 ni = ieee80211_dup_bss(vap, macaddr);
1695 struct ieee80211com *ic = vap->iv_ic;
1697 /* XXX no rate negotiation; just dup */
1698 ni->ni_rates = vap->iv_bss->ni_rates;
1699 if (ieee80211_iserp_rateset(&ni->ni_rates))
1700 ni->ni_flags |= IEEE80211_NODE_ERP;
1701 if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
1703 * In adhoc demo mode there are no management
1704 * frames to use to discover neighbor capabilities,
1705 * so blindly propagate the local configuration
1706 * so we can do interesting things (e.g. use
1707 * WME to disable ACK's).
1712 if (vap->iv_flags & IEEE80211_F_WME)
1713 ni->ni_flags |= IEEE80211_NODE_QOS;
1714 #ifdef IEEE80211_SUPPORT_SUPERG
1715 if (vap->iv_flags & IEEE80211_F_FF)
1716 ni->ni_flags |= IEEE80211_NODE_FF;
1719 ieee80211_node_setuptxparms(ni);
1720 ieee80211_ratectl_node_init(ni);
1723 * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX,
1724 * not A-MPDU TX; not 11n rates, etc. We'll cycle
1725 * that after we hear that we can indeed do 11n
1726 * (either by a beacon frame or by a probe response.)
1730 * This is the first time we see the node.
1732 if (ic->ic_newassoc != NULL)
1733 ic->ic_newassoc(ni, 1);
1736 * Kick off a probe request to the given node;
1737 * we will then use the probe response to update
1738 * 11n/etc configuration state.
1740 * XXX TODO: this isn't guaranteed, and until we get
1741 * a probe response, we won't be able to actually
1742 * do anything 802.11n related to the node.
1743 * So if this does indeed work, maybe we should hold
1744 * off on sending responses until we get the probe
1745 * response, or just default to some sensible subset
1746 * of 802.11n behaviour (eg always allow aggregation
1747 * negotiation TO us, but not FROM us, etc) so we
1748 * aren't entirely busted.
1750 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1751 ieee80211_send_probereq(ni, /* node */
1752 vap->iv_myaddr, /* SA */
1753 ni->ni_macaddr, /* DA */
1754 vap->iv_bss->ni_bssid, /* BSSID */
1755 vap->iv_bss->ni_essid,
1756 vap->iv_bss->ni_esslen); /* SSID */
1759 /* XXX not right for 802.1x/WPA */
1760 ieee80211_node_authorize(ni);
1766 ieee80211_init_neighbor(struct ieee80211_node *ni,
1767 const struct ieee80211_frame *wh,
1768 const struct ieee80211_scanparams *sp)
1770 int do_ht_setup = 0, do_vht_setup = 0;
1772 ni->ni_esslen = sp->ssid[1];
1773 memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
1774 IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
1775 memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
1776 ni->ni_intval = sp->bintval;
1777 ni->ni_capinfo = sp->capinfo;
1778 ni->ni_chan = ni->ni_ic->ic_curchan;
1779 ni->ni_fhdwell = sp->fhdwell;
1780 ni->ni_fhindex = sp->fhindex;
1781 ni->ni_erp = sp->erp;
1782 ni->ni_timoff = sp->timoff;
1783 #ifdef IEEE80211_SUPPORT_MESH
1784 if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
1785 ieee80211_mesh_init_neighbor(ni, wh, sp);
1787 if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
1788 ieee80211_ies_expand(&ni->ni_ies);
1789 if (ni->ni_ies.wme_ie != NULL)
1790 ni->ni_flags |= IEEE80211_NODE_QOS;
1792 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1793 #ifdef IEEE80211_SUPPORT_SUPERG
1794 if (ni->ni_ies.ath_ie != NULL)
1795 ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
1797 if (ni->ni_ies.htcap_ie != NULL)
1798 ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
1799 if (ni->ni_ies.htinfo_ie != NULL)
1800 ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
1802 if (ni->ni_ies.vhtcap_ie != NULL)
1803 ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
1804 if (ni->ni_ies.vhtopmode_ie != NULL)
1805 ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
1807 if ((ni->ni_ies.htcap_ie != NULL) &&
1808 (ni->ni_ies.htinfo_ie != NULL) &&
1809 (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
1813 if ((ni->ni_ies.vhtcap_ie != NULL) &&
1814 (ni->ni_ies.vhtopmode_ie != NULL) &&
1815 (ni->ni_vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
1821 /* NB: must be after ni_chan is setup */
1822 ieee80211_setup_rates(ni, sp->rates, sp->xrates,
1823 IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
1824 IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
1827 * If the neighbor is HT compatible, flip that on.
1830 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
1831 "%s: doing HT setup\n", __func__);
1832 ieee80211_ht_node_init(ni);
1833 ieee80211_ht_updateparams(ni,
1834 ni->ni_ies.htcap_ie,
1835 ni->ni_ies.htinfo_ie);
1838 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
1839 printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
1844 ieee80211_vht_node_init(ni);
1845 ieee80211_vht_updateparams(ni,
1846 ni->ni_ies.vhtcap_ie,
1847 ni->ni_ies.vhtopmode_ie);
1848 ieee80211_setup_vht_rates(ni,
1849 ni->ni_ies.vhtcap_ie,
1850 ni->ni_ies.vhtopmode_ie);
1855 * Finally do the channel upgrade/change based
1856 * on the HT/VHT configuration.
1858 ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
1859 ni->ni_ies.htinfo_ie);
1860 ieee80211_setup_htrates(ni,
1861 ni->ni_ies.htcap_ie,
1862 IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
1863 ieee80211_setup_basic_htrates(ni,
1864 ni->ni_ies.htinfo_ie);
1866 ieee80211_node_setuptxparms(ni);
1867 ieee80211_ratectl_node_init(ni);
1869 /* Reassociate; we're now 11n/11ac */
1871 * XXX TODO: this is the wrong thing to do -
1872 * we're calling it with isnew=1 so the ath(4)
1873 * driver reinitialises the rate tables.
1874 * This "mostly" works for ath(4), but it won't
1875 * be right for firmware devices which allocate
1878 * So, do we just create a new node and delete
1881 if (ni->ni_ic->ic_newassoc)
1882 ni->ni_ic->ic_newassoc(ni, 1);
1887 * Do node discovery in adhoc mode on receipt of a beacon
1888 * or probe response frame. Note that for the driver's
1889 * benefit we we treat this like an association so the
1890 * driver has an opportunity to setup it's private state.
1892 struct ieee80211_node *
1893 ieee80211_add_neighbor(struct ieee80211vap *vap,
1894 const struct ieee80211_frame *wh,
1895 const struct ieee80211_scanparams *sp)
1897 struct ieee80211_node *ni;
1899 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
1900 "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
1901 ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
1903 struct ieee80211com *ic = vap->iv_ic;
1905 ieee80211_init_neighbor(ni, wh, sp);
1906 if (ieee80211_iserp_rateset(&ni->ni_rates))
1907 ni->ni_flags |= IEEE80211_NODE_ERP;
1908 ieee80211_node_setuptxparms(ni);
1909 ieee80211_ratectl_node_init(ni);
1910 if (ic->ic_newassoc != NULL)
1911 ic->ic_newassoc(ni, 1);
1912 /* XXX not right for 802.1x/WPA */
1913 ieee80211_node_authorize(ni);
1918 #define IS_PROBEREQ(wh) \
1919 ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
1920 == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
1921 #define IS_BCAST_PROBEREQ(wh) \
1922 (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
1923 ((const struct ieee80211_frame *)(wh))->i_addr3))
1925 static __inline struct ieee80211_node *
1926 _find_rxnode(struct ieee80211_node_table *nt,
1927 const struct ieee80211_frame_min *wh)
1929 if (IS_BCAST_PROBEREQ(wh))
1930 return NULL; /* spam bcast probe req to all vap's */
1931 return ieee80211_find_node_locked(nt, wh->i_addr2);
1935 * Locate the node for sender, track state, and then pass the
1936 * (referenced) node up to the 802.11 layer for its use. Note
1937 * we can return NULL if the sender is not in the table.
1939 struct ieee80211_node *
1940 #ifdef IEEE80211_DEBUG_REFCNT
1941 ieee80211_find_rxnode_debug(struct ieee80211com *ic,
1942 const struct ieee80211_frame_min *wh, const char *func, int line)
1944 ieee80211_find_rxnode(struct ieee80211com *ic,
1945 const struct ieee80211_frame_min *wh)
1948 struct ieee80211_node_table *nt;
1949 struct ieee80211_node *ni;
1952 IEEE80211_NODE_LOCK(nt);
1953 ni = _find_rxnode(nt, wh);
1954 IEEE80211_NODE_UNLOCK(nt);
1960 * Like ieee80211_find_rxnode but use the supplied h/w
1961 * key index as a hint to locate the node in the key
1962 * mapping table. If an entry is present at the key
1963 * index we return it; otherwise do a normal lookup and
1964 * update the mapping table if the station has a unicast
1965 * key assigned to it.
1967 struct ieee80211_node *
1968 #ifdef IEEE80211_DEBUG_REFCNT
1969 ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
1970 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
1971 const char *func, int line)
1973 ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
1974 const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
1977 struct ieee80211_node_table *nt;
1978 struct ieee80211_node *ni;
1981 IEEE80211_NODE_LOCK(nt);
1982 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
1983 ni = nt->nt_keyixmap[keyix];
1987 ni = _find_rxnode(nt, wh);
1988 if (ni != NULL && nt->nt_keyixmap != NULL) {
1990 * If the station has a unicast key cache slot
1991 * assigned update the key->node mapping table.
1993 keyix = ni->ni_ucastkey.wk_rxkeyix;
1994 /* XXX can keyixmap[keyix] != NULL? */
1995 if (keyix < nt->nt_keyixmax &&
1996 nt->nt_keyixmap[keyix] == NULL) {
1997 IEEE80211_DPRINTF(ni->ni_vap,
1999 "%s: add key map entry %p<%s> refcnt %d\n",
2000 __func__, ni, ether_sprintf(ni->ni_macaddr),
2001 ieee80211_node_refcnt(ni)+1);
2002 nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
2006 if (IS_BCAST_PROBEREQ(wh))
2007 ni = NULL; /* spam bcast probe req to all vap's */
2009 ieee80211_ref_node(ni);
2011 IEEE80211_NODE_UNLOCK(nt);
2015 #undef IS_BCAST_PROBEREQ
2019 * Return a reference to the appropriate node for sending
2020 * a data frame. This handles node discovery in adhoc networks.
2022 struct ieee80211_node *
2023 #ifdef IEEE80211_DEBUG_REFCNT
2024 ieee80211_find_txnode_debug(struct ieee80211vap *vap,
2025 const uint8_t macaddr[IEEE80211_ADDR_LEN],
2026 const char *func, int line)
2028 ieee80211_find_txnode(struct ieee80211vap *vap,
2029 const uint8_t macaddr[IEEE80211_ADDR_LEN])
2032 struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
2033 struct ieee80211_node *ni;
2036 * The destination address should be in the node table
2037 * unless this is a multicast/broadcast frame. We can
2038 * also optimize station mode operation, all frames go
2041 /* XXX can't hold lock across dup_bss 'cuz of recursive locking */
2042 IEEE80211_NODE_LOCK(nt);
2043 if (vap->iv_opmode == IEEE80211_M_STA ||
2044 vap->iv_opmode == IEEE80211_M_WDS ||
2045 IEEE80211_IS_MULTICAST(macaddr))
2046 ni = ieee80211_ref_node(vap->iv_bss);
2048 ni = ieee80211_find_node_locked(nt, macaddr);
2049 IEEE80211_NODE_UNLOCK(nt);
2052 if (vap->iv_opmode == IEEE80211_M_IBSS ||
2053 vap->iv_opmode == IEEE80211_M_AHDEMO) {
2055 * In adhoc mode cons up a node for the destination.
2056 * Note that we need an additional reference for the
2057 * caller to be consistent with
2058 * ieee80211_find_node_locked.
2061 * XXX TODO: this doesn't fake up 11n state; we need
2062 * to find another way to get it upgraded.
2064 ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
2066 (void) ieee80211_ref_node(ni);
2068 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
2069 "no node, discard frame (%s)", __func__);
2070 vap->iv_stats.is_tx_nonode++;
2077 _ieee80211_free_node(struct ieee80211_node *ni)
2079 struct ieee80211_node_table *nt = ni->ni_table;
2082 * NB: careful about referencing the vap as it may be
2083 * gone if the last reference was held by a driver.
2084 * We know the com will always be present so it's safe
2085 * to use ni_ic below to reclaim resources.
2088 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
2089 "%s %p<%s> in %s table\n", __func__, ni,
2090 ether_sprintf(ni->ni_macaddr),
2091 nt != NULL ? nt->nt_name : "<gone>");
2093 if (ni->ni_associd != 0) {
2094 struct ieee80211vap *vap = ni->ni_vap;
2095 if (vap->iv_aid_bitmap != NULL)
2096 IEEE80211_AID_CLR(vap, ni->ni_associd);
2099 ieee80211_del_node_nt(nt, ni);
2100 ni->ni_ic->ic_node_free(ni);
2104 * Clear any entry in the unicast key mapping table.
2107 node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2109 ieee80211_keyix keyix;
2111 keyix = ni->ni_ucastkey.wk_rxkeyix;
2112 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
2113 nt->nt_keyixmap[keyix] == ni) {
2114 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2115 "%s: %p<%s> clear key map entry %u\n",
2116 __func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
2117 nt->nt_keyixmap[keyix] = NULL;
2118 ieee80211_node_decref(ni);
2126 #ifdef IEEE80211_DEBUG_REFCNT
2127 ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
2129 ieee80211_free_node(struct ieee80211_node *ni)
2132 struct ieee80211_node_table *nt = ni->ni_table;
2134 #ifdef IEEE80211_DEBUG_REFCNT
2135 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2136 "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
2137 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
2140 IEEE80211_NODE_LOCK(nt);
2141 if (ieee80211_node_dectestref(ni)) {
2143 * Last reference, reclaim state.
2145 _ieee80211_free_node(ni);
2146 } else if (ieee80211_node_refcnt(ni) == 1)
2147 if (node_clear_keyixmap(nt, ni))
2148 _ieee80211_free_node(ni);
2149 IEEE80211_NODE_UNLOCK(nt);
2151 if (ieee80211_node_dectestref(ni))
2152 _ieee80211_free_node(ni);
2157 * Reclaim a unicast key and clear any key cache state.
2160 ieee80211_node_delucastkey(struct ieee80211_node *ni)
2162 struct ieee80211com *ic = ni->ni_ic;
2163 struct ieee80211_node_table *nt = &ic->ic_sta;
2164 struct ieee80211_node *nikey;
2165 ieee80211_keyix keyix;
2166 int isowned, status;
2169 * NB: We must beware of LOR here; deleting the key
2170 * can cause the crypto layer to block traffic updates
2171 * which can generate a LOR against the node table lock;
2172 * grab it here and stash the key index for our use below.
2174 * Must also beware of recursion on the node table lock.
2175 * When called from node_cleanup we may already have
2176 * the node table lock held. Unfortunately there's no
2177 * way to separate out this path so we must do this
2180 isowned = IEEE80211_NODE_IS_LOCKED(nt);
2182 IEEE80211_NODE_LOCK(nt);
2184 status = 1; /* NB: success */
2185 if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
2186 keyix = ni->ni_ucastkey.wk_rxkeyix;
2187 status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
2188 if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
2189 nikey = nt->nt_keyixmap[keyix];
2190 nt->nt_keyixmap[keyix] = NULL;
2194 IEEE80211_NODE_UNLOCK(nt);
2196 if (nikey != NULL) {
2197 KASSERT(nikey == ni,
2198 ("key map out of sync, ni %p nikey %p", ni, nikey));
2199 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2200 "%s: delete key map entry %p<%s> refcnt %d\n",
2201 __func__, ni, ether_sprintf(ni->ni_macaddr),
2202 ieee80211_node_refcnt(ni)-1);
2203 ieee80211_free_node(ni);
2209 * Reclaim a node. If this is the last reference count then
2210 * do the normal free work. Otherwise remove it from the node
2211 * table and mark it gone by clearing the back-reference.
2214 node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2217 IEEE80211_NODE_LOCK_ASSERT(nt);
2219 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
2220 "%s: remove %p<%s> from %s table, refcnt %d\n",
2221 __func__, ni, ether_sprintf(ni->ni_macaddr),
2222 nt->nt_name, ieee80211_node_refcnt(ni)-1);
2224 * Clear any entry in the unicast key mapping table.
2225 * We need to do it here so rx lookups don't find it
2226 * in the mapping table even if it's not in the hash
2227 * table. We cannot depend on the mapping table entry
2228 * being cleared because the node may not be free'd.
2230 (void)node_clear_keyixmap(nt, ni);
2231 if (!ieee80211_node_dectestref(ni)) {
2233 * Other references are present, just remove the
2234 * node from the table so it cannot be found. When
2235 * the references are dropped storage will be
2238 ieee80211_del_node_nt(nt, ni);
2240 _ieee80211_free_node(ni);
2244 * Node table support.
2248 ieee80211_node_table_init(struct ieee80211com *ic,
2249 struct ieee80211_node_table *nt,
2250 const char *name, int inact, int keyixmax)
2254 IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
2255 TAILQ_INIT(&nt->nt_node);
2258 nt->nt_inact_init = inact;
2259 nt->nt_keyixmax = keyixmax;
2260 if (nt->nt_keyixmax > 0) {
2261 nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
2262 keyixmax * sizeof(struct ieee80211_node *),
2264 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2265 if (nt->nt_keyixmap == NULL)
2267 "Cannot allocate key index map with %u entries\n",
2270 nt->nt_keyixmap = NULL;
2274 ieee80211_node_table_reset(struct ieee80211_node_table *nt,
2275 struct ieee80211vap *match)
2277 struct ieee80211_node *ni, *next;
2279 IEEE80211_NODE_LOCK(nt);
2280 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
2281 if (match != NULL && ni->ni_vap != match)
2283 /* XXX can this happen? if so need's work */
2284 if (ni->ni_associd != 0) {
2285 struct ieee80211vap *vap = ni->ni_vap;
2287 if (vap->iv_auth->ia_node_leave != NULL)
2288 vap->iv_auth->ia_node_leave(ni);
2289 if (vap->iv_aid_bitmap != NULL)
2290 IEEE80211_AID_CLR(vap, ni->ni_associd);
2292 ni->ni_wdsvap = NULL; /* clear reference */
2293 node_reclaim(nt, ni);
2295 if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
2297 * Make a separate pass to clear references to this vap
2298 * held by DWDS entries. They will not be matched above
2299 * because ni_vap will point to the ap vap but we still
2300 * need to clear ni_wdsvap when the WDS vap is destroyed
2303 TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
2304 if (ni->ni_wdsvap == match)
2305 ni->ni_wdsvap = NULL;
2307 IEEE80211_NODE_UNLOCK(nt);
2311 ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
2313 ieee80211_node_table_reset(nt, NULL);
2314 if (nt->nt_keyixmap != NULL) {
2316 /* XXX verify all entries are NULL */
2318 for (i = 0; i < nt->nt_keyixmax; i++)
2319 if (nt->nt_keyixmap[i] != NULL)
2320 printf("%s: %s[%u] still active\n", __func__,
2323 IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
2324 nt->nt_keyixmap = NULL;
2326 IEEE80211_NODE_LOCK_DESTROY(nt);
2330 timeout_stations(void *arg __unused, struct ieee80211_node *ni)
2332 struct ieee80211com *ic = ni->ni_ic;
2333 struct ieee80211vap *vap = ni->ni_vap;
2336 * Only process stations when in RUN state. This
2337 * insures, for example, that we don't timeout an
2338 * inactive station during CAC. Note that CSA state
2339 * is actually handled in ieee80211_node_timeout as
2340 * it applies to more than timeout processing.
2342 if (vap->iv_state != IEEE80211_S_RUN)
2345 * Ignore entries for which have yet to receive an
2346 * authentication frame. These are transient and
2347 * will be reclaimed when the last reference to them
2348 * goes away (when frame xmits complete).
2350 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2351 vap->iv_opmode == IEEE80211_M_STA) &&
2352 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2355 * Free fragment if not needed anymore
2356 * (last fragment older than 1s).
2357 * XXX doesn't belong here, move to node_age
2359 if (ni->ni_rxfrag[0] != NULL &&
2360 ticks > ni->ni_rxfragstamp + hz) {
2361 m_freem(ni->ni_rxfrag[0]);
2362 ni->ni_rxfrag[0] = NULL;
2364 if (ni->ni_inact > 0) {
2366 IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
2367 "%s: inact %u inact_reload %u nrates %u",
2368 __func__, ni->ni_inact, ni->ni_inact_reload,
2369 ni->ni_rates.rs_nrates);
2372 * Special case ourself; we may be idle for extended periods
2373 * of time and regardless reclaiming our state is wrong.
2374 * XXX run ic_node_age
2376 /* XXX before inact decrement? */
2377 if (ni == vap->iv_bss)
2379 if (ni->ni_associd != 0 ||
2380 (vap->iv_opmode == IEEE80211_M_IBSS ||
2381 vap->iv_opmode == IEEE80211_M_AHDEMO)) {
2383 * Age/drain resources held by the station.
2385 ic->ic_node_age(ni);
2387 * Probe the station before time it out. We
2388 * send a null data frame which may not be
2389 * universally supported by drivers (need it
2390 * for ps-poll support so it should be...).
2392 * XXX don't probe the station unless we've
2393 * received a frame from them (and have
2394 * some idea of the rates they are capable
2395 * of); this will get fixed more properly
2396 * soon with better handling of the rate set.
2398 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2399 (0 < ni->ni_inact &&
2400 ni->ni_inact <= vap->iv_inact_probe) &&
2401 ni->ni_rates.rs_nrates != 0) {
2403 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
2405 "probe station due to inactivity");
2407 * Grab a reference so the node cannot
2408 * be reclaimed before we send the frame.
2409 * ieee80211_send_nulldata understands
2410 * we've done this and reclaims the
2411 * ref for us as needed.
2413 /* XXX fix this (not required anymore). */
2414 ieee80211_ref_node(ni);
2416 ieee80211_send_nulldata(ni);
2421 if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
2422 ni->ni_inact <= 0) {
2424 IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
2425 "station timed out due to inactivity "
2426 "(refcnt %u)", ieee80211_node_refcnt(ni));
2428 * Send a deauthenticate frame and drop the station.
2429 * This is somewhat complicated due to reference counts
2430 * and locking. At this point a station will typically
2431 * have a reference count of 2. ieee80211_node_leave
2432 * will do a "free" of the node which will drop the
2433 * reference count. But in the meantime a reference
2434 * wil be held by the deauth frame. The actual reclaim
2435 * of the node will happen either after the tx is
2436 * completed or by ieee80211_node_leave.
2438 if (ni->ni_associd != 0) {
2439 IEEE80211_SEND_MGMT(ni,
2440 IEEE80211_FC0_SUBTYPE_DEAUTH,
2441 IEEE80211_REASON_AUTH_EXPIRE);
2443 ieee80211_node_leave(ni);
2444 vap->iv_stats.is_node_timeout++;
2449 * Timeout inactive stations and do related housekeeping.
2452 ieee80211_timeout_stations(struct ieee80211com *ic)
2454 struct ieee80211_node_table *nt = &ic->ic_sta;
2456 ieee80211_iterate_nodes(nt, timeout_stations, NULL);
2460 * Aggressively reclaim resources. This should be used
2461 * only in a critical situation to reclaim mbuf resources.
2464 ieee80211_drain(struct ieee80211com *ic)
2466 struct ieee80211_node_table *nt = &ic->ic_sta;
2467 struct ieee80211vap *vap;
2468 struct ieee80211_node *ni;
2470 IEEE80211_NODE_LOCK(nt);
2471 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2473 * Ignore entries for which have yet to receive an
2474 * authentication frame. These are transient and
2475 * will be reclaimed when the last reference to them
2476 * goes away (when frame xmits complete).
2480 * Only process stations when in RUN state. This
2481 * insures, for example, that we don't timeout an
2482 * inactive station during CAC. Note that CSA state
2483 * is actually handled in ieee80211_node_timeout as
2484 * it applies to more than timeout processing.
2486 if (vap->iv_state != IEEE80211_S_RUN)
2488 /* XXX can vap be NULL? */
2489 if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
2490 vap->iv_opmode == IEEE80211_M_STA) &&
2491 (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
2495 * XXX doesn't belong here, move to node_drain
2497 if (ni->ni_rxfrag[0] != NULL) {
2498 m_freem(ni->ni_rxfrag[0]);
2499 ni->ni_rxfrag[0] = NULL;
2502 * Drain resources held by the station.
2504 ic->ic_node_drain(ni);
2506 IEEE80211_NODE_UNLOCK(nt);
2510 * Per-ieee80211vap inactivity timer callback.
2513 ieee80211_vap_timeout(struct ieee80211vap *vap)
2516 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2518 ieee80211_vap_erp_timeout(vap);
2519 ieee80211_ht_timeout(vap);
2520 ieee80211_vht_timeout(vap);
2524 * Per-ieee80211com inactivity timer callback.
2527 ieee80211_node_timeout(void *arg)
2529 struct ieee80211com *ic = arg;
2530 struct ieee80211vap *vap;
2533 * Defer timeout processing if a channel switch is pending.
2534 * We typically need to be mute so not doing things that
2535 * might generate frames is good to handle in one place.
2536 * Suppressing the station timeout processing may extend the
2537 * lifetime of inactive stations (by not decrementing their
2538 * idle counters) but this should be ok unless the CSA is
2539 * active for an unusually long time.
2541 if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
2542 ieee80211_scan_timeout(ic);
2543 ieee80211_timeout_stations(ic);
2544 ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
2547 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2548 ieee80211_vap_timeout(vap);
2549 IEEE80211_UNLOCK(ic);
2551 callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
2552 ieee80211_node_timeout, ic);
2556 * The same as ieee80211_iterate_nodes(), but for one vap only.
2559 ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt,
2560 struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg)
2562 struct ieee80211_node **ni_arr;
2563 struct ieee80211_node *ni;
2568 * Iterate over the node table and save an array of ref'ed nodes.
2570 * This is separated out from calling the actual node function so that
2571 * no LORs will occur.
2573 IEEE80211_NODE_LOCK(nt);
2574 count = nt->nt_count;
2575 size = count * sizeof(struct ieee80211_node *);
2576 ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
2577 IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
2578 if (ni_arr == NULL) {
2579 IEEE80211_NODE_UNLOCK(nt);
2584 TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
2585 if (vap != NULL && ni->ni_vap != vap)
2588 ("node array overflow (vap %p, i %d, count %d)\n",
2590 ni_arr[i] = ieee80211_ref_node(ni);
2593 IEEE80211_NODE_UNLOCK(nt);
2595 for (i = 0; i < count; i++) {
2596 if (ni_arr[i] == NULL) /* end of the list */
2598 (*f)(arg, ni_arr[i]);
2599 /* ieee80211_free_node() locks by itself */
2600 ieee80211_free_node(ni_arr[i]);
2603 IEEE80211_FREE(ni_arr, M_80211_NODE);
2609 * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
2610 * reference in the source.
2613 ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
2614 ieee80211_iter_func *f, void *arg)
2616 /* XXX no way to pass error to the caller. */
2617 (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg);
2621 ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
2623 printf("0x%p: mac %s refcnt %d\n", ni,
2624 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
2625 printf("\tauthmode %u flags 0x%x\n",
2626 ni->ni_authmode, ni->ni_flags);
2627 printf("\tassocid 0x%x txpower %u vlan %u\n",
2628 ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
2629 printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
2630 ni->ni_txseqs[IEEE80211_NONQOS_TID],
2631 ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
2632 ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
2633 ni->ni_rxfragstamp);
2634 printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
2635 node_getrssi(ni), ni->ni_noise,
2636 ni->ni_intval, ni->ni_capinfo);
2637 printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
2638 ether_sprintf(ni->ni_bssid),
2639 ni->ni_esslen, ni->ni_essid,
2640 ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
2641 printf("\tinact %u inact_reload %u txrate %u\n",
2642 ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
2643 printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
2644 ni->ni_htcap, ni->ni_htparam,
2645 ni->ni_htctlchan, ni->ni_ht2ndchan);
2646 printf("\thtopmode %x htstbc %x htchw %u\n",
2647 ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
2648 printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n",
2649 ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2,
2650 (int) ni->ni_vht_basicmcs);
2655 ieee80211_dump_nodes(struct ieee80211_node_table *nt)
2657 ieee80211_iterate_nodes(nt,
2658 (ieee80211_iter_func *) ieee80211_dump_node, nt);
2662 * Iterate over the VAPs and update their ERP beacon IEs.
2664 * Note this must be called from the deferred ERP update task paths.
2667 ieee80211_notify_erp_locked(struct ieee80211com *ic)
2669 struct ieee80211vap *vap;
2671 IEEE80211_LOCK_ASSERT(ic);
2673 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
2674 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
2675 ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
2679 * Handle a station joining an 11g network.
2682 ieee80211_node_join_11g(struct ieee80211_node *ni)
2684 struct ieee80211com *ic = ni->ni_ic;
2685 struct ieee80211vap *vap = ni->ni_vap;
2687 IEEE80211_LOCK_ASSERT(ic);
2690 * Station isn't capable of short slot time. Bump
2691 * the count of long slot time stations and disable
2692 * use of short slot time. Note that the actual switch
2693 * over to long slot time use may not occur until the
2694 * next beacon transmission (per sec. 7.3.1.4 of 11g).
2696 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2697 vap->iv_longslotsta++;
2698 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2699 "station needs long slot time, count %d",
2700 vap->iv_longslotsta);
2702 * XXX TODO: this may need all VAPs checked!
2704 if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
2706 * Don't force slot time when switched to turbo
2707 * mode as non-ERP stations won't be present; this
2708 * need only be done when on the normal G channel.
2710 ieee80211_vap_set_shortslottime(vap, 0);
2714 * If the new station is not an ERP station
2715 * then bump the counter and enable protection
2718 if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
2719 vap->iv_nonerpsta++;
2720 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2721 "station is !ERP, %d non-ERP stations associated",
2724 * If station does not support short preamble
2725 * then we must enable use of Barker preamble.
2727 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
2728 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2729 "%s", "station needs long preamble");
2730 vap->iv_flags |= IEEE80211_F_USEBARKER;
2731 vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE;
2732 ieee80211_vap_update_preamble(vap);
2735 * If protection is configured and this is the first
2736 * indication we should use protection, enable it.
2738 if (vap->iv_protmode != IEEE80211_PROT_NONE &&
2739 vap->iv_nonerpsta == 1 &&
2740 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2741 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2742 "%s: enable use of protection\n", __func__);
2743 vap->iv_flags |= IEEE80211_F_USEPROT;
2744 ieee80211_vap_update_erp_protmode(vap);
2747 ni->ni_flags |= IEEE80211_NODE_ERP;
2751 ieee80211_node_join(struct ieee80211_node *ni, int resp)
2753 struct ieee80211com *ic = ni->ni_ic;
2754 struct ieee80211vap *vap = ni->ni_vap;
2757 if (ni->ni_associd == 0) {
2760 KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
2762 * It would be good to search the bitmap
2763 * more efficiently, but this will do for now.
2765 for (aid = 1; aid < vap->iv_max_aid; aid++) {
2766 if (!IEEE80211_AID_ISSET(vap, aid))
2769 if (aid >= vap->iv_max_aid) {
2770 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
2771 ieee80211_node_leave(ni);
2774 ni->ni_associd = aid | 0xc000;
2775 ni->ni_jointime = time_uptime;
2777 IEEE80211_AID_SET(vap, ni->ni_associd);
2778 vap->iv_sta_assoc++;
2780 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2781 ieee80211_ht_node_join(ni);
2782 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2783 ieee80211_vht_node_join(ni);
2784 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2785 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2786 ieee80211_node_join_11g(ni);
2787 IEEE80211_UNLOCK(ic);
2794 * XXX VHT - should log VHT channel width, etc
2796 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2797 "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s%s",
2798 IEEE80211_NODE_AID(ni),
2799 vap->iv_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
2800 vap->iv_flags & IEEE80211_F_SHSLOT ? "short" : "long",
2801 vap->iv_flags & IEEE80211_F_USEPROT ? ", protection" : "",
2802 ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
2803 /* XXX update for VHT string */
2804 ni->ni_flags & IEEE80211_NODE_HT ?
2805 (ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
2806 ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
2807 ni->ni_flags & IEEE80211_NODE_AMSDU ? " (+AMSDU)" : "",
2808 ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
2809 ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
2810 ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
2811 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
2812 ", fast-frames" : "",
2813 IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
2817 ieee80211_node_setuptxparms(ni);
2818 ieee80211_ratectl_node_init(ni);
2819 /* give driver a chance to setup state like ni_txrate */
2820 if (ic->ic_newassoc != NULL)
2821 ic->ic_newassoc(ni, newassoc);
2822 IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
2823 /* tell the authenticator about new station */
2824 if (vap->iv_auth->ia_node_join != NULL)
2825 vap->iv_auth->ia_node_join(ni);
2826 ieee80211_notify_node_join(ni,
2827 resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
2831 disable_protection(struct ieee80211vap *vap)
2833 struct ieee80211com *ic = vap->iv_ic;
2835 KASSERT(vap->iv_nonerpsta == 0 &&
2836 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
2837 ("%d non ERP stations, flags 0x%x", vap->iv_nonerpsta,
2838 vap->iv_flags_ext));
2840 vap->iv_flags &= ~IEEE80211_F_USEPROT;
2841 /* XXX verify mode? */
2842 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
2843 vap->iv_flags |= IEEE80211_F_SHPREAMBLE;
2844 vap->iv_flags &= ~IEEE80211_F_USEBARKER;
2846 ieee80211_vap_update_erp_protmode(vap);
2847 ieee80211_vap_update_preamble(vap);
2851 * Handle a station leaving an 11g network.
2854 ieee80211_node_leave_11g(struct ieee80211_node *ni)
2856 struct ieee80211com *ic = ni->ni_ic;
2857 struct ieee80211vap *vap = ni->ni_vap;
2859 IEEE80211_LOCK_ASSERT(ic);
2861 KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
2862 ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
2863 ic->ic_bsschan->ic_flags));
2866 * If a long slot station do the slot time bookkeeping.
2868 if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
2869 KASSERT(vap->iv_longslotsta > 0,
2870 ("bogus long slot station count %d", vap->iv_longslotsta));
2871 vap->iv_longslotsta--;
2872 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2873 "long slot time station leaves, count now %d",
2874 vap->iv_longslotsta);
2876 * XXX TODO: this may need all VAPs checked!
2878 if (vap->iv_longslotsta == 0) {
2880 * Re-enable use of short slot time if supported
2881 * and not operating in IBSS mode (per spec).
2883 if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
2884 ic->ic_opmode != IEEE80211_M_IBSS) {
2885 IEEE80211_DPRINTF(ni->ni_vap,
2886 IEEE80211_MSG_ASSOC,
2887 "%s: re-enable use of short slot time\n",
2889 ieee80211_vap_set_shortslottime(vap, 1);
2894 * If a non-ERP station do the protection-related bookkeeping.
2896 if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
2897 KASSERT(vap->iv_nonerpsta > 0,
2898 ("bogus non-ERP station count %d", vap->iv_nonerpsta));
2899 vap->iv_nonerpsta--;
2900 IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
2901 "non-ERP station leaves, count now %d%s", vap->iv_nonerpsta,
2902 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
2903 " (non-ERP sta present)" : "");
2904 if (vap->iv_nonerpsta == 0 &&
2905 (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
2906 IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
2907 "%s: disable use of protection\n", __func__);
2908 disable_protection(vap);
2914 * Time out presence of an overlapping bss with non-ERP
2915 * stations. When operating in hostap mode we listen for
2916 * beacons from other stations and if we identify a non-ERP
2917 * station is present we enable protection. To identify
2918 * when all non-ERP stations are gone we time out this
2922 ieee80211_vap_erp_timeout(struct ieee80211vap *vap)
2925 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2927 if ((vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
2928 ieee80211_time_after(ticks, vap->iv_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
2929 IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
2930 "%s", "age out non-ERP sta present on channel");
2931 vap->iv_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
2932 if (vap->iv_nonerpsta == 0)
2933 disable_protection(vap);
2938 * Handle bookkeeping for station deauthentication/disassociation
2939 * when operating as an ap.
2942 ieee80211_node_leave(struct ieee80211_node *ni)
2944 struct ieee80211com *ic = ni->ni_ic;
2945 struct ieee80211vap *vap = ni->ni_vap;
2946 struct ieee80211_node_table *nt = ni->ni_table;
2948 IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
2949 "station with aid %d leaves", IEEE80211_NODE_AID(ni));
2951 KASSERT(vap->iv_opmode != IEEE80211_M_STA,
2952 ("unexpected operating mode %u", vap->iv_opmode));
2954 * If node wasn't previously associated all
2955 * we need to do is reclaim the reference.
2957 /* XXX ibss mode bypasses 11g and notification */
2958 if (ni->ni_associd == 0)
2961 * Tell the authenticator the station is leaving.
2962 * Note that we must do this before yanking the
2963 * association id as the authenticator uses the
2964 * associd to locate it's state block.
2966 if (vap->iv_auth->ia_node_leave != NULL)
2967 vap->iv_auth->ia_node_leave(ni);
2970 IEEE80211_AID_CLR(vap, ni->ni_associd);
2971 vap->iv_sta_assoc--;
2973 if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
2974 ieee80211_vht_node_leave(ni);
2975 if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
2976 ieee80211_ht_node_leave(ni);
2977 if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
2978 IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
2979 ieee80211_node_leave_11g(ni);
2980 IEEE80211_UNLOCK(ic);
2982 * Cleanup station state. In particular clear various
2983 * state that might otherwise be reused if the node
2984 * is reused before the reference count goes to zero
2985 * (and memory is reclaimed).
2987 ieee80211_sta_leave(ni);
2990 * Remove the node from any table it's recorded in and
2991 * drop the caller's reference. Removal from the table
2992 * is important to insure the node is not reprocessed
2996 IEEE80211_NODE_LOCK(nt);
2997 node_reclaim(nt, ni);
2998 IEEE80211_NODE_UNLOCK(nt);
3000 ieee80211_free_node(ni);
3005 uint32_t rssi_total;
3009 get_hostap_rssi(void *arg, struct ieee80211_node *ni)
3011 struct rssiinfo *info = arg;
3012 struct ieee80211vap *vap = ni->ni_vap;
3015 /* only associated stations */
3016 if (ni->ni_associd == 0)
3018 rssi = vap->iv_ic->ic_node_getrssi(ni);
3020 info->rssi_samples++;
3021 info->rssi_total += rssi;
3026 get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
3028 struct rssiinfo *info = arg;
3029 struct ieee80211vap *vap = ni->ni_vap;
3032 /* only neighbors */
3033 /* XXX check bssid */
3034 if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
3036 rssi = vap->iv_ic->ic_node_getrssi(ni);
3038 info->rssi_samples++;
3039 info->rssi_total += rssi;
3043 #ifdef IEEE80211_SUPPORT_MESH
3045 get_mesh_rssi(void *arg, struct ieee80211_node *ni)
3047 struct rssiinfo *info = arg;
3048 struct ieee80211vap *vap = ni->ni_vap;
3051 /* only neighbors that peered successfully */
3052 if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
3054 rssi = vap->iv_ic->ic_node_getrssi(ni);
3056 info->rssi_samples++;
3057 info->rssi_total += rssi;
3060 #endif /* IEEE80211_SUPPORT_MESH */
3063 ieee80211_getrssi(struct ieee80211vap *vap)
3065 #define NZ(x) ((x) == 0 ? 1 : (x))
3066 struct ieee80211com *ic = vap->iv_ic;
3067 struct rssiinfo info;
3069 info.rssi_total = 0;
3070 info.rssi_samples = 0;
3071 switch (vap->iv_opmode) {
3072 case IEEE80211_M_IBSS: /* average of all ibss neighbors */
3073 case IEEE80211_M_AHDEMO: /* average of all neighbors */
3074 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi,
3077 case IEEE80211_M_HOSTAP: /* average of all associated stations */
3078 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi,
3081 #ifdef IEEE80211_SUPPORT_MESH
3082 case IEEE80211_M_MBSS: /* average of all mesh neighbors */
3083 ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi,
3087 case IEEE80211_M_MONITOR: /* XXX */
3088 case IEEE80211_M_STA: /* use stats from associated ap */
3090 if (vap->iv_bss != NULL)
3091 info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
3092 info.rssi_samples = 1;
3095 return info.rssi_total / NZ(info.rssi_samples);
3100 ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
3103 if (vap->iv_bss == NULL) /* NB: shouldn't happen */
3105 vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
3106 /* for non-station mode return avg'd rssi accounting */
3107 if (vap->iv_opmode != IEEE80211_M_STA)
3108 *rssi = ieee80211_getrssi(vap);