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ieee80211_node.c revision 1.75.4.2
      1  1.75.4.2      phil /*	$NetBSD: ieee80211_node.c,v 1.75.4.2 2018/07/12 16:35:34 phil Exp $ */
      2  1.75.4.2      phil 
      3  1.75.4.1      phil /*-
      4  1.75.4.1      phil  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      5  1.75.4.1      phil  *
      6       1.1    dyoung  * Copyright (c) 2001 Atsushi Onoe
      7  1.75.4.1      phil  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
      8       1.1    dyoung  * All rights reserved.
      9       1.1    dyoung  *
     10       1.1    dyoung  * Redistribution and use in source and binary forms, with or without
     11       1.1    dyoung  * modification, are permitted provided that the following conditions
     12       1.1    dyoung  * are met:
     13       1.1    dyoung  * 1. Redistributions of source code must retain the above copyright
     14       1.1    dyoung  *    notice, this list of conditions and the following disclaimer.
     15       1.1    dyoung  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.1    dyoung  *    notice, this list of conditions and the following disclaimer in the
     17       1.1    dyoung  *    documentation and/or other materials provided with the distribution.
     18       1.1    dyoung  *
     19       1.1    dyoung  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20       1.1    dyoung  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21       1.1    dyoung  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22       1.1    dyoung  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23       1.1    dyoung  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24       1.1    dyoung  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25       1.1    dyoung  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26       1.1    dyoung  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27       1.1    dyoung  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28       1.1    dyoung  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29       1.1    dyoung  */
     30       1.1    dyoung 
     31       1.1    dyoung #include <sys/cdefs.h>
     32  1.75.4.2      phil #if __FreeBSD__
     33  1.75.4.1      phil __FBSDID("$FreeBSD$");
     34  1.75.4.2      phil #endif
     35       1.1    dyoung 
     36  1.75.4.1      phil #include "opt_wlan.h"
     37       1.1    dyoung 
     38       1.1    dyoung #include <sys/param.h>
     39  1.75.4.1      phil #include <sys/systm.h>
     40  1.75.4.1      phil #include <sys/mbuf.h>
     41       1.1    dyoung #include <sys/malloc.h>
     42       1.1    dyoung #include <sys/kernel.h>
     43  1.75.4.2      phil #ifdef __NetBSD__
     44  1.75.4.2      phil #include <sys/sbuf.h>
     45  1.75.4.2      phil #endif
     46      1.39    dyoung 
     47       1.1    dyoung #include <sys/socket.h>
     48  1.75.4.1      phil 
     49       1.1    dyoung #include <net/if.h>
     50  1.75.4.2      phil #if __FreeBSD__
     51  1.75.4.1      phil #include <net/if_var.h>
     52  1.75.4.2      phil #endif
     53       1.1    dyoung #include <net/if_media.h>
     54  1.75.4.2      phil #if __FreeBSD__
     55  1.75.4.1      phil #include <net/ethernet.h>
     56  1.75.4.2      phil #endif
     57  1.75.4.2      phil #ifdef __NetBSD__
     58  1.75.4.2      phil #include <net/if_ether.h>
     59  1.75.4.2      phil #include <net/route.h>
     60  1.75.4.2      phil #endif
     61       1.1    dyoung 
     62       1.1    dyoung #include <net80211/ieee80211_var.h>
     63  1.75.4.1      phil #include <net80211/ieee80211_input.h>
     64  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
     65  1.75.4.1      phil #include <net80211/ieee80211_superg.h>
     66  1.75.4.1      phil #endif
     67  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_TDMA
     68  1.75.4.1      phil #include <net80211/ieee80211_tdma.h>
     69  1.75.4.1      phil #endif
     70  1.75.4.1      phil #include <net80211/ieee80211_wds.h>
     71  1.75.4.1      phil #include <net80211/ieee80211_mesh.h>
     72  1.75.4.1      phil #include <net80211/ieee80211_ratectl.h>
     73  1.75.4.1      phil #include <net80211/ieee80211_vht.h>
     74       1.1    dyoung 
     75       1.1    dyoung #include <net/bpf.h>
     76       1.1    dyoung 
     77  1.75.4.2      phil #ifdef __NetBSD__
     78  1.75.4.2      phil #undef  KASSERT
     79  1.75.4.2      phil #define KASSERT(__cond, __complaint) FBSDKASSERT(__cond, __complaint)
     80  1.75.4.2      phil #endif
     81  1.75.4.2      phil 
     82  1.75.4.1      phil /*
     83  1.75.4.1      phil  * IEEE80211_NODE_HASHSIZE must be a power of 2.
     84  1.75.4.1      phil  */
     85  1.75.4.1      phil CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0);
     86       1.1    dyoung 
     87      1.42    dyoung /*
     88      1.42    dyoung  * Association id's are managed with a bit vector.
     89      1.42    dyoung  */
     90  1.75.4.1      phil #define	IEEE80211_AID_SET(_vap, b) \
     91  1.75.4.1      phil 	((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \
     92  1.75.4.1      phil 		(1 << (IEEE80211_AID(b) % 32)))
     93  1.75.4.1      phil #define	IEEE80211_AID_CLR(_vap, b) \
     94  1.75.4.1      phil 	((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \
     95  1.75.4.1      phil 		~(1 << (IEEE80211_AID(b) % 32)))
     96  1.75.4.1      phil #define	IEEE80211_AID_ISSET(_vap, b) \
     97  1.75.4.1      phil 	((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32)))
     98  1.75.4.1      phil 
     99  1.75.4.1      phil static int ieee80211_sta_join1(struct ieee80211_node *);
    100      1.42    dyoung 
    101  1.75.4.1      phil static struct ieee80211_node *node_alloc(struct ieee80211vap *,
    102  1.75.4.1      phil 	const uint8_t [IEEE80211_ADDR_LEN]);
    103      1.39    dyoung static void node_cleanup(struct ieee80211_node *);
    104      1.39    dyoung static void node_free(struct ieee80211_node *);
    105  1.75.4.1      phil static void node_age(struct ieee80211_node *);
    106  1.75.4.1      phil static int8_t node_getrssi(const struct ieee80211_node *);
    107  1.75.4.1      phil static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *);
    108  1.75.4.1      phil static void node_getmimoinfo(const struct ieee80211_node *,
    109  1.75.4.1      phil 	struct ieee80211_mimo_info *);
    110      1.39    dyoung 
    111      1.39    dyoung static void _ieee80211_free_node(struct ieee80211_node *);
    112      1.39    dyoung 
    113  1.75.4.1      phil static void node_reclaim(struct ieee80211_node_table *nt,
    114  1.75.4.1      phil 	struct ieee80211_node *ni);
    115      1.39    dyoung static void ieee80211_node_table_init(struct ieee80211com *ic,
    116      1.45     skrll 	struct ieee80211_node_table *nt, const char *name,
    117  1.75.4.1      phil 	int inact, int keymaxix);
    118  1.75.4.1      phil static void ieee80211_node_table_reset(struct ieee80211_node_table *,
    119  1.75.4.1      phil 	struct ieee80211vap *);
    120      1.39    dyoung static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt);
    121  1.75.4.1      phil static void ieee80211_erp_timeout(struct ieee80211com *);
    122       1.1    dyoung 
    123      1.11    dyoung MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
    124  1.75.4.1      phil MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie");
    125       1.9    dyoung 
    126       1.1    dyoung void
    127      1.23   mycroft ieee80211_node_attach(struct ieee80211com *ic)
    128       1.1    dyoung {
    129  1.75.4.1      phil 	/* XXX really want maxlen enforced per-sta */
    130  1.75.4.1      phil 	ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8,
    131  1.75.4.1      phil 	    "802.11 staging q");
    132  1.75.4.1      phil 	ieee80211_node_table_init(ic, &ic->ic_sta, "station",
    133  1.75.4.1      phil 		IEEE80211_INACT_INIT, ic->ic_max_keyix);
    134  1.75.4.1      phil 	callout_init(&ic->ic_inact, 1);
    135  1.75.4.1      phil 	callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
    136  1.75.4.1      phil 		ieee80211_node_timeout, ic);
    137       1.1    dyoung 
    138      1.39    dyoung 	ic->ic_node_alloc = node_alloc;
    139      1.39    dyoung 	ic->ic_node_free = node_free;
    140      1.39    dyoung 	ic->ic_node_cleanup = node_cleanup;
    141  1.75.4.1      phil 	ic->ic_node_age = node_age;
    142  1.75.4.1      phil 	ic->ic_node_drain = node_age;		/* NB: same as age */
    143      1.39    dyoung 	ic->ic_node_getrssi = node_getrssi;
    144  1.75.4.1      phil 	ic->ic_node_getsignal = node_getsignal;
    145  1.75.4.1      phil 	ic->ic_node_getmimoinfo = node_getmimoinfo;
    146      1.39    dyoung 
    147  1.75.4.1      phil 	/*
    148  1.75.4.1      phil 	 * Set flags to be propagated to all vap's;
    149  1.75.4.1      phil 	 * these define default behaviour/configuration.
    150  1.75.4.1      phil 	 */
    151  1.75.4.1      phil 	ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */
    152  1.75.4.1      phil }
    153  1.75.4.1      phil 
    154  1.75.4.1      phil void
    155  1.75.4.1      phil ieee80211_node_detach(struct ieee80211com *ic)
    156  1.75.4.1      phil {
    157      1.22   mycroft 
    158  1.75.4.1      phil 	callout_drain(&ic->ic_inact);
    159  1.75.4.1      phil 	ieee80211_node_table_cleanup(&ic->ic_sta);
    160  1.75.4.1      phil 	ieee80211_ageq_cleanup(&ic->ic_stageq);
    161      1.45     skrll }
    162      1.45     skrll 
    163      1.45     skrll void
    164  1.75.4.1      phil ieee80211_node_vattach(struct ieee80211vap *vap)
    165      1.45     skrll {
    166  1.75.4.1      phil 	/* NB: driver can override */
    167  1.75.4.1      phil 	vap->iv_max_aid = IEEE80211_AID_DEF;
    168      1.45     skrll 
    169  1.75.4.1      phil 	/* default station inactivity timer setings */
    170  1.75.4.1      phil 	vap->iv_inact_init = IEEE80211_INACT_INIT;
    171  1.75.4.1      phil 	vap->iv_inact_auth = IEEE80211_INACT_AUTH;
    172  1.75.4.1      phil 	vap->iv_inact_run = IEEE80211_INACT_RUN;
    173  1.75.4.1      phil 	vap->iv_inact_probe = IEEE80211_INACT_PROBE;
    174       1.1    dyoung 
    175  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT,
    176  1.75.4.1      phil 	    "%s: init %u auth %u run %u probe %u\n", __func__,
    177  1.75.4.1      phil 	    vap->iv_inact_init, vap->iv_inact_auth,
    178  1.75.4.1      phil 	    vap->iv_inact_run, vap->iv_inact_probe);
    179  1.75.4.1      phil }
    180  1.75.4.1      phil 
    181  1.75.4.1      phil void
    182  1.75.4.1      phil ieee80211_node_latevattach(struct ieee80211vap *vap)
    183  1.75.4.1      phil {
    184  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
    185  1.75.4.1      phil 		/* XXX should we allow max aid to be zero? */
    186  1.75.4.1      phil 		if (vap->iv_max_aid < IEEE80211_AID_MIN) {
    187  1.75.4.1      phil 			vap->iv_max_aid = IEEE80211_AID_MIN;
    188  1.75.4.1      phil 			if_printf(vap->iv_ifp,
    189  1.75.4.1      phil 			    "WARNING: max aid too small, changed to %d\n",
    190  1.75.4.1      phil 			    vap->iv_max_aid);
    191  1.75.4.1      phil 		}
    192  1.75.4.1      phil 		vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC(
    193  1.75.4.1      phil 			howmany(vap->iv_max_aid, 32) * sizeof(uint32_t),
    194  1.75.4.1      phil 			M_80211_NODE,
    195  1.75.4.1      phil 			IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
    196  1.75.4.1      phil 		if (vap->iv_aid_bitmap == NULL) {
    197  1.75.4.1      phil 			/* XXX no way to recover */
    198  1.75.4.1      phil 			printf("%s: no memory for AID bitmap, max aid %d!\n",
    199  1.75.4.1      phil 			    __func__, vap->iv_max_aid);
    200  1.75.4.1      phil 			vap->iv_max_aid = 0;
    201  1.75.4.1      phil 		}
    202      1.39    dyoung 	}
    203      1.33    dyoung 
    204  1.75.4.1      phil 	ieee80211_reset_bss(vap);
    205      1.39    dyoung 
    206  1.75.4.1      phil 	vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
    207       1.1    dyoung }
    208       1.1    dyoung 
    209       1.1    dyoung void
    210  1.75.4.1      phil ieee80211_node_vdetach(struct ieee80211vap *vap)
    211       1.1    dyoung {
    212  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
    213       1.1    dyoung 
    214  1.75.4.1      phil 	ieee80211_node_table_reset(&ic->ic_sta, vap);
    215  1.75.4.1      phil 	if (vap->iv_bss != NULL) {
    216  1.75.4.1      phil 		ieee80211_free_node(vap->iv_bss);
    217  1.75.4.1      phil 		vap->iv_bss = NULL;
    218      1.23   mycroft 	}
    219  1.75.4.1      phil 	if (vap->iv_aid_bitmap != NULL) {
    220  1.75.4.1      phil 		IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE);
    221  1.75.4.1      phil 		vap->iv_aid_bitmap = NULL;
    222      1.39    dyoung 	}
    223      1.39    dyoung }
    224      1.39    dyoung 
    225  1.75.4.1      phil /*
    226      1.39    dyoung  * Port authorize/unauthorize interfaces for use by an authenticator.
    227      1.39    dyoung  */
    228      1.39    dyoung 
    229      1.39    dyoung void
    230      1.45     skrll ieee80211_node_authorize(struct ieee80211_node *ni)
    231      1.39    dyoung {
    232  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    233      1.45     skrll 
    234      1.39    dyoung 	ni->ni_flags |= IEEE80211_NODE_AUTH;
    235  1.75.4.1      phil 	ni->ni_inact_reload = vap->iv_inact_run;
    236  1.75.4.1      phil 	ni->ni_inact = ni->ni_inact_reload;
    237  1.75.4.1      phil 
    238  1.75.4.1      phil 	IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
    239  1.75.4.1      phil 	    "%s: inact_reload %u", __func__, ni->ni_inact_reload);
    240      1.39    dyoung }
    241      1.39    dyoung 
    242      1.39    dyoung void
    243      1.45     skrll ieee80211_node_unauthorize(struct ieee80211_node *ni)
    244      1.39    dyoung {
    245  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    246       1.1    dyoung 
    247  1.75.4.1      phil 	ni->ni_flags &= ~IEEE80211_NODE_AUTH;
    248  1.75.4.1      phil 	ni->ni_inact_reload = vap->iv_inact_auth;
    249  1.75.4.1      phil 	if (ni->ni_inact > ni->ni_inact_reload)
    250  1.75.4.1      phil 		ni->ni_inact = ni->ni_inact_reload;
    251      1.39    dyoung 
    252  1.75.4.1      phil 	IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
    253  1.75.4.1      phil 	    "%s: inact_reload %u inact %u", __func__,
    254  1.75.4.1      phil 	    ni->ni_inact_reload, ni->ni_inact);
    255      1.39    dyoung }
    256      1.39    dyoung 
    257       1.1    dyoung /*
    258  1.75.4.1      phil  * Fix tx parameters for a node according to ``association state''.
    259       1.1    dyoung  */
    260  1.75.4.1      phil void
    261  1.75.4.1      phil ieee80211_node_setuptxparms(struct ieee80211_node *ni)
    262       1.1    dyoung {
    263  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    264  1.75.4.1      phil 	enum ieee80211_phymode mode;
    265       1.1    dyoung 
    266  1.75.4.1      phil 	if (ni->ni_flags & IEEE80211_NODE_VHT) {
    267  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
    268  1.75.4.1      phil 			mode = IEEE80211_MODE_VHT_5GHZ;
    269  1.75.4.1      phil 		else
    270  1.75.4.1      phil 			mode = IEEE80211_MODE_VHT_2GHZ;
    271  1.75.4.1      phil 	} else if (ni->ni_flags & IEEE80211_NODE_HT) {
    272  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan))
    273  1.75.4.1      phil 			mode = IEEE80211_MODE_11NA;
    274  1.75.4.1      phil 		else
    275  1.75.4.1      phil 			mode = IEEE80211_MODE_11NG;
    276  1.75.4.1      phil 	} else {				/* legacy rate handling */
    277  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_ST(ni->ni_chan))
    278  1.75.4.1      phil 			mode = IEEE80211_MODE_STURBO_A;
    279  1.75.4.1      phil 		else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan))
    280  1.75.4.1      phil 			mode = IEEE80211_MODE_HALF;
    281  1.75.4.1      phil 		else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan))
    282  1.75.4.1      phil 			mode = IEEE80211_MODE_QUARTER;
    283  1.75.4.1      phil 		/* NB: 108A should be handled as 11a */
    284  1.75.4.1      phil 		else if (IEEE80211_IS_CHAN_A(ni->ni_chan))
    285  1.75.4.1      phil 			mode = IEEE80211_MODE_11A;
    286  1.75.4.1      phil 		else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) ||
    287  1.75.4.1      phil 		    (ni->ni_flags & IEEE80211_NODE_ERP))
    288  1.75.4.1      phil 			mode = IEEE80211_MODE_11G;
    289  1.75.4.1      phil 		else
    290  1.75.4.1      phil 			mode = IEEE80211_MODE_11B;
    291      1.39    dyoung 	}
    292  1.75.4.1      phil 	ni->ni_txparms = &vap->iv_txparms[mode];
    293       1.1    dyoung }
    294       1.1    dyoung 
    295       1.1    dyoung /*
    296  1.75.4.1      phil  * Set/change the channel.  The rate set is also updated as
    297  1.75.4.1      phil  * to insure a consistent view by drivers.
    298  1.75.4.1      phil  * XXX should be private but hostap needs it to deal with CSA
    299       1.1    dyoung  */
    300       1.1    dyoung void
    301  1.75.4.1      phil ieee80211_node_set_chan(struct ieee80211_node *ni,
    302  1.75.4.1      phil 	struct ieee80211_channel *chan)
    303       1.1    dyoung {
    304  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
    305  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    306  1.75.4.1      phil 	enum ieee80211_phymode mode;
    307      1.39    dyoung 
    308  1.75.4.1      phil 	KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel"));
    309      1.57     tacha 
    310  1.75.4.1      phil 	ni->ni_chan = chan;
    311  1.75.4.1      phil 	mode = ieee80211_chan2mode(chan);
    312  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_HT(chan)) {
    313      1.57     tacha 		/*
    314  1.75.4.1      phil 		 * We must install the legacy rate est in ni_rates and the
    315  1.75.4.1      phil 		 * HT rate set in ni_htrates.
    316      1.57     tacha 		 */
    317  1.75.4.1      phil 		ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan);
    318  1.75.4.1      phil 		/*
    319  1.75.4.1      phil 		 * Setup bss tx parameters based on operating mode.  We
    320  1.75.4.1      phil 		 * use legacy rates when operating in a mixed HT+non-HT bss
    321  1.75.4.1      phil 		 * and non-ERP rates in 11g for mixed ERP+non-ERP bss.
    322  1.75.4.1      phil 		 */
    323  1.75.4.1      phil 		if (mode == IEEE80211_MODE_11NA &&
    324  1.75.4.1      phil 		    (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
    325  1.75.4.1      phil 			mode = IEEE80211_MODE_11A;
    326  1.75.4.1      phil 		else if (mode == IEEE80211_MODE_11NG &&
    327  1.75.4.1      phil 		    (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0)
    328  1.75.4.1      phil 			mode = IEEE80211_MODE_11G;
    329  1.75.4.1      phil 		if (mode == IEEE80211_MODE_11G &&
    330  1.75.4.1      phil 		    (vap->iv_flags & IEEE80211_F_PUREG) == 0)
    331  1.75.4.1      phil 			mode = IEEE80211_MODE_11B;
    332  1.75.4.1      phil 	}
    333  1.75.4.1      phil 	ni->ni_txparms = &vap->iv_txparms[mode];
    334  1.75.4.1      phil 	ni->ni_rates = *ieee80211_get_suprates(ic, chan);
    335      1.57     tacha }
    336      1.57     tacha 
    337      1.39    dyoung static __inline void
    338      1.39    dyoung copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
    339      1.39    dyoung {
    340      1.39    dyoung 	/* propagate useful state */
    341      1.39    dyoung 	nbss->ni_authmode = obss->ni_authmode;
    342      1.39    dyoung 	nbss->ni_txpower = obss->ni_txpower;
    343      1.39    dyoung 	nbss->ni_vlan = obss->ni_vlan;
    344      1.39    dyoung 	/* XXX statistics? */
    345  1.75.4.1      phil 	/* XXX legacy WDS bssid? */
    346       1.1    dyoung }
    347       1.1    dyoung 
    348       1.1    dyoung void
    349  1.75.4.1      phil ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
    350       1.1    dyoung {
    351  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
    352       1.1    dyoung 	struct ieee80211_node *ni;
    353       1.1    dyoung 
    354  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
    355  1.75.4.1      phil 		"%s: creating %s on channel %u%c flags 0x%08x\n", __func__,
    356  1.75.4.1      phil 		ieee80211_opmode_name[vap->iv_opmode],
    357  1.75.4.1      phil 		ieee80211_chan2ieee(ic, chan),
    358  1.75.4.1      phil 		ieee80211_channel_type_char(chan),
    359  1.75.4.1      phil 		chan->ic_flags);
    360      1.39    dyoung 
    361  1.75.4.1      phil 	ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
    362      1.39    dyoung 	if (ni == NULL) {
    363      1.39    dyoung 		/* XXX recovery? */
    364      1.39    dyoung 		return;
    365      1.16    dyoung 	}
    366  1.75.4.1      phil 	IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
    367  1.75.4.1      phil 	ni->ni_esslen = vap->iv_des_ssid[0].len;
    368  1.75.4.1      phil 	memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
    369  1.75.4.1      phil 	if (vap->iv_bss != NULL)
    370  1.75.4.1      phil 		copy_bss(ni, vap->iv_bss);
    371      1.45     skrll 	ni->ni_intval = ic->ic_bintval;
    372  1.75.4.1      phil 	if (vap->iv_flags & IEEE80211_F_PRIVACY)
    373       1.1    dyoung 		ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
    374       1.1    dyoung 	if (ic->ic_phytype == IEEE80211_T_FH) {
    375       1.1    dyoung 		ni->ni_fhdwell = 200;	/* XXX */
    376       1.1    dyoung 		ni->ni_fhindex = 1;
    377       1.1    dyoung 	}
    378  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_IBSS) {
    379      1.39    dyoung 		ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS;	/* XXX */
    380  1.75.4.1      phil 		if (vap->iv_flags & IEEE80211_F_DESBSSID)
    381  1.75.4.1      phil 			IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
    382  1.75.4.1      phil 		else {
    383  1.75.4.1      phil 			get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN);
    384  1.75.4.1      phil 			/* clear group bit, add local bit */
    385  1.75.4.1      phil 			ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02;
    386  1.75.4.1      phil 		}
    387  1.75.4.1      phil 	} else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
    388  1.75.4.1      phil 		if (vap->iv_flags & IEEE80211_F_DESBSSID)
    389  1.75.4.1      phil 			IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
    390      1.39    dyoung 		else
    391  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_TDMA
    392  1.75.4.1      phil 		if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
    393  1.75.4.1      phil #endif
    394  1.75.4.1      phil 			memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
    395  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
    396  1.75.4.1      phil 	} else if (vap->iv_opmode == IEEE80211_M_MBSS) {
    397  1.75.4.1      phil 		ni->ni_meshidlen = vap->iv_mesh->ms_idlen;
    398  1.75.4.1      phil 		memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen);
    399  1.75.4.1      phil #endif
    400      1.39    dyoung 	}
    401  1.75.4.1      phil 	/*
    402      1.39    dyoung 	 * Fix the channel and related attributes.
    403      1.39    dyoung 	 */
    404  1.75.4.1      phil 	/* clear DFS CAC state on previous channel */
    405  1.75.4.1      phil 	if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
    406  1.75.4.1      phil 	    ic->ic_bsschan->ic_freq != chan->ic_freq &&
    407  1.75.4.1      phil 	    IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan))
    408  1.75.4.1      phil 		ieee80211_dfs_cac_clear(ic, ic->ic_bsschan);
    409  1.75.4.1      phil 	ic->ic_bsschan = chan;
    410  1.75.4.1      phil 	ieee80211_node_set_chan(ni, chan);
    411  1.75.4.1      phil 	ic->ic_curmode = ieee80211_chan2mode(chan);
    412      1.39    dyoung 	/*
    413  1.75.4.1      phil 	 * Do mode-specific setup.
    414      1.39    dyoung 	 */
    415  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_FULL(chan)) {
    416  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_ANYG(chan)) {
    417  1.75.4.1      phil 			/*
    418  1.75.4.1      phil 			 * Use a mixed 11b/11g basic rate set.
    419  1.75.4.1      phil 			 */
    420  1.75.4.1      phil 			ieee80211_setbasicrates(&ni->ni_rates,
    421  1.75.4.1      phil 			    IEEE80211_MODE_11G);
    422  1.75.4.1      phil 			if (vap->iv_flags & IEEE80211_F_PUREG) {
    423  1.75.4.1      phil 				/*
    424  1.75.4.1      phil 				 * Also mark OFDM rates basic so 11b
    425  1.75.4.1      phil 				 * stations do not join (WiFi compliance).
    426  1.75.4.1      phil 				 */
    427  1.75.4.1      phil 				ieee80211_addbasicrates(&ni->ni_rates,
    428  1.75.4.1      phil 				    IEEE80211_MODE_11A);
    429  1.75.4.1      phil 			}
    430  1.75.4.1      phil 		} else if (IEEE80211_IS_CHAN_B(chan)) {
    431  1.75.4.1      phil 			/*
    432  1.75.4.1      phil 			 * Force pure 11b rate set.
    433  1.75.4.1      phil 			 */
    434  1.75.4.1      phil 			ieee80211_setbasicrates(&ni->ni_rates,
    435  1.75.4.1      phil 				IEEE80211_MODE_11B);
    436  1.75.4.1      phil 		}
    437  1.75.4.1      phil 	}
    438  1.75.4.1      phil 
    439  1.75.4.1      phil 	/* XXX TODO: other bits and pieces - eg fast-frames? */
    440  1.75.4.1      phil 
    441  1.75.4.1      phil 	/* If we're an 11n channel then initialise the 11n bits */
    442  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
    443  1.75.4.1      phil 		/* XXX what else? */
    444  1.75.4.1      phil 		ieee80211_ht_node_init(ni);
    445  1.75.4.1      phil 		ieee80211_vht_node_init(ni);
    446  1.75.4.1      phil 	} else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
    447  1.75.4.1      phil 		/* XXX what else? */
    448  1.75.4.1      phil 		ieee80211_ht_node_init(ni);
    449      1.39    dyoung 	}
    450      1.39    dyoung 
    451  1.75.4.1      phil 	(void) ieee80211_sta_join1(ieee80211_ref_node(ni));
    452       1.1    dyoung }
    453       1.1    dyoung 
    454  1.75.4.1      phil /*
    455  1.75.4.1      phil  * Reset bss state on transition to the INIT state.
    456  1.75.4.1      phil  * Clear any stations from the table (they have been
    457  1.75.4.1      phil  * deauth'd) and reset the bss node (clears key, rate
    458  1.75.4.1      phil  * etc. state).
    459  1.75.4.1      phil  */
    460      1.39    dyoung void
    461  1.75.4.1      phil ieee80211_reset_bss(struct ieee80211vap *vap)
    462      1.39    dyoung {
    463  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
    464      1.39    dyoung 	struct ieee80211_node *ni, *obss;
    465      1.39    dyoung 
    466  1.75.4.1      phil 	ieee80211_node_table_reset(&ic->ic_sta, vap);
    467  1.75.4.1      phil 	/* XXX multi-bss: wrong */
    468  1.75.4.1      phil 	ieee80211_reset_erp(ic);
    469      1.39    dyoung 
    470  1.75.4.1      phil 	ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
    471  1.75.4.1      phil 	KASSERT(ni != NULL, ("unable to setup initial BSS node"));
    472  1.75.4.1      phil 	obss = vap->iv_bss;
    473  1.75.4.1      phil 	vap->iv_bss = ieee80211_ref_node(ni);
    474      1.39    dyoung 	if (obss != NULL) {
    475      1.39    dyoung 		copy_bss(ni, obss);
    476      1.45     skrll 		ni->ni_intval = ic->ic_bintval;
    477      1.39    dyoung 		ieee80211_free_node(obss);
    478  1.75.4.1      phil 	} else
    479  1.75.4.1      phil 		IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
    480      1.39    dyoung }
    481      1.39    dyoung 
    482  1.75.4.1      phil static int
    483  1.75.4.1      phil match_ssid(const struct ieee80211_node *ni,
    484  1.75.4.1      phil 	int nssid, const struct ieee80211_scan_ssid ssids[])
    485  1.75.4.1      phil {
    486  1.75.4.1      phil 	int i;
    487  1.75.4.1      phil 
    488  1.75.4.1      phil 	for (i = 0; i < nssid; i++) {
    489  1.75.4.1      phil 		if (ni->ni_esslen == ssids[i].len &&
    490  1.75.4.1      phil 		     memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
    491  1.75.4.1      phil 			return 1;
    492  1.75.4.1      phil 	}
    493  1.75.4.1      phil 	return 0;
    494  1.75.4.1      phil }
    495      1.45     skrll 
    496  1.75.4.1      phil /*
    497  1.75.4.1      phil  * Test a node for suitability/compatibility.
    498  1.75.4.1      phil  */
    499      1.39    dyoung static int
    500  1.75.4.1      phil check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
    501  1.75.4.1      phil {
    502  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
    503  1.75.4.1      phil         uint8_t rate;
    504  1.75.4.1      phil 
    505  1.75.4.1      phil 	if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
    506  1.75.4.1      phil 		return 0;
    507  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_IBSS) {
    508  1.75.4.1      phil 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
    509  1.75.4.1      phil 			return 0;
    510  1.75.4.1      phil 	} else {
    511  1.75.4.1      phil 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
    512  1.75.4.1      phil 			return 0;
    513  1.75.4.1      phil 	}
    514  1.75.4.1      phil 	if (vap->iv_flags & IEEE80211_F_PRIVACY) {
    515  1.75.4.1      phil 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
    516  1.75.4.1      phil 			return 0;
    517  1.75.4.1      phil 	} else {
    518  1.75.4.1      phil 		/* XXX does this mean privacy is supported or required? */
    519  1.75.4.1      phil 		if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
    520  1.75.4.1      phil 			return 0;
    521  1.75.4.1      phil 	}
    522  1.75.4.1      phil 	rate = ieee80211_fix_rate(ni, &ni->ni_rates,
    523  1.75.4.1      phil 	    IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
    524  1.75.4.1      phil 	if (rate & IEEE80211_RATE_BASIC)
    525  1.75.4.1      phil 		return 0;
    526  1.75.4.1      phil 	if (vap->iv_des_nssid != 0 &&
    527  1.75.4.1      phil 	    !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
    528  1.75.4.1      phil 		return 0;
    529  1.75.4.1      phil 	if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
    530  1.75.4.1      phil 	    !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
    531  1.75.4.1      phil 		return 0;
    532  1.75.4.1      phil 	return 1;
    533  1.75.4.1      phil }
    534  1.75.4.1      phil 
    535  1.75.4.1      phil #ifdef IEEE80211_DEBUG
    536  1.75.4.1      phil /*
    537  1.75.4.1      phil  * Display node suitability/compatibility.
    538  1.75.4.1      phil  */
    539  1.75.4.1      phil static void
    540  1.75.4.1      phil check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
    541       1.5    dyoung {
    542  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
    543  1.75.4.1      phil         uint8_t rate;
    544  1.75.4.1      phil         int fail;
    545       1.5    dyoung 
    546       1.5    dyoung 	fail = 0;
    547       1.5    dyoung 	if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
    548       1.5    dyoung 		fail |= 0x01;
    549  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_IBSS) {
    550       1.5    dyoung 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
    551       1.5    dyoung 			fail |= 0x02;
    552       1.5    dyoung 	} else {
    553       1.5    dyoung 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
    554       1.5    dyoung 			fail |= 0x02;
    555       1.5    dyoung 	}
    556  1.75.4.1      phil 	if (vap->iv_flags & IEEE80211_F_PRIVACY) {
    557       1.5    dyoung 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
    558       1.5    dyoung 			fail |= 0x04;
    559       1.5    dyoung 	} else {
    560      1.11    dyoung 		/* XXX does this mean privacy is supported or required? */
    561       1.5    dyoung 		if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
    562       1.5    dyoung 			fail |= 0x04;
    563       1.5    dyoung 	}
    564  1.75.4.1      phil 	rate = ieee80211_fix_rate(ni, &ni->ni_rates,
    565  1.75.4.1      phil 	     IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
    566       1.5    dyoung 	if (rate & IEEE80211_RATE_BASIC)
    567       1.5    dyoung 		fail |= 0x08;
    568  1.75.4.1      phil 	if (vap->iv_des_nssid != 0 &&
    569  1.75.4.1      phil 	    !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
    570       1.5    dyoung 		fail |= 0x10;
    571  1.75.4.1      phil 	if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
    572  1.75.4.1      phil 	    !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
    573       1.5    dyoung 		fail |= 0x20;
    574      1.75      maxv 
    575  1.75.4.1      phil 	printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
    576  1.75.4.1      phil 	printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
    577  1.75.4.1      phil 	printf(" %3d%c",
    578  1.75.4.1      phil 	    ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' ');
    579  1.75.4.1      phil 	printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
    580  1.75.4.1      phil 	    fail & 0x08 ? '!' : ' ');
    581  1.75.4.1      phil 	printf(" %4s%c",
    582  1.75.4.1      phil 	    (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
    583  1.75.4.1      phil 	    (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
    584  1.75.4.1      phil 	    "????",
    585  1.75.4.1      phil 	    fail & 0x02 ? '!' : ' ');
    586  1.75.4.1      phil 	printf(" %3s%c ",
    587  1.75.4.1      phil 	    (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ?  "wep" : "no",
    588  1.75.4.1      phil 	    fail & 0x04 ? '!' : ' ');
    589  1.75.4.1      phil 	ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
    590  1.75.4.1      phil 	printf("%s\n", fail & 0x10 ? "!" : "");
    591      1.39    dyoung }
    592  1.75.4.1      phil #endif /* IEEE80211_DEBUG */
    593  1.75.4.1      phil 
    594      1.39    dyoung 
    595  1.75.4.1      phil int
    596  1.75.4.1      phil ieee80211_ibss_merge_check(struct ieee80211_node *ni)
    597      1.39    dyoung {
    598  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    599      1.39    dyoung 
    600  1.75.4.1      phil 	if (ni == vap->iv_bss ||
    601  1.75.4.1      phil 	    IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
    602  1.75.4.1      phil 		/* unchanged, nothing to do */
    603  1.75.4.1      phil 		return 0;
    604  1.75.4.1      phil 	}
    605      1.39    dyoung 
    606  1.75.4.1      phil 	if (!check_bss(vap, ni)) {
    607  1.75.4.1      phil 		/* capabilities mismatch */
    608  1.75.4.1      phil 		IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
    609  1.75.4.1      phil 		    "%s: merge failed, capabilities mismatch\n", __func__);
    610  1.75.4.1      phil #ifdef IEEE80211_DEBUG
    611  1.75.4.1      phil 		if (ieee80211_msg_assoc(vap))
    612  1.75.4.1      phil 			check_bss_debug(vap, ni);
    613  1.75.4.1      phil #endif
    614  1.75.4.1      phil 		vap->iv_stats.is_ibss_capmismatch++;
    615  1.75.4.1      phil 		return 0;
    616  1.75.4.1      phil 	}
    617      1.39    dyoung 
    618  1.75.4.1      phil 	return 1;
    619      1.39    dyoung }
    620      1.39    dyoung 
    621       1.1    dyoung /*
    622  1.75.4.1      phil  * Check if the given node should populate the node table.
    623  1.75.4.1      phil  *
    624  1.75.4.1      phil  * We need to be in "see all beacons for all ssids" mode in order
    625  1.75.4.1      phil  * to do IBSS merges, however this means we will populate nodes for
    626  1.75.4.1      phil  * /all/ IBSS SSIDs, versus just the one we care about.
    627  1.75.4.1      phil  *
    628  1.75.4.1      phil  * So this check ensures the node can actually belong to our IBSS
    629  1.75.4.1      phil  * configuration.  For now it simply checks the SSID.
    630       1.1    dyoung  */
    631  1.75.4.1      phil int
    632  1.75.4.1      phil ieee80211_ibss_node_check_new(struct ieee80211_node *ni,
    633  1.75.4.1      phil     const struct ieee80211_scanparams *scan)
    634       1.1    dyoung {
    635  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    636  1.75.4.1      phil 	int i;
    637      1.39    dyoung 
    638      1.39    dyoung 	/*
    639  1.75.4.1      phil 	 * If we have no SSID and no scan SSID, return OK.
    640      1.39    dyoung 	 */
    641  1.75.4.1      phil 	if (vap->iv_des_nssid == 0 && scan->ssid == NULL)
    642  1.75.4.1      phil 		goto ok;
    643      1.75      maxv 
    644      1.39    dyoung 	/*
    645  1.75.4.1      phil 	 * If we have one of (SSID, scan SSID) then return error.
    646      1.39    dyoung 	 */
    647  1.75.4.1      phil 	if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL))
    648  1.75.4.1      phil 		goto mismatch;
    649      1.75      maxv 
    650  1.75.4.1      phil 	/*
    651  1.75.4.1      phil 	 * Double-check - we need scan SSID.
    652  1.75.4.1      phil 	 */
    653  1.75.4.1      phil 	if (scan->ssid == NULL)
    654  1.75.4.1      phil 		goto mismatch;
    655      1.75      maxv 
    656  1.75.4.1      phil 	/*
    657  1.75.4.1      phil 	 * Check if the scan SSID matches the SSID list for the VAP.
    658  1.75.4.1      phil 	 */
    659  1.75.4.1      phil 	for (i = 0; i < vap->iv_des_nssid; i++) {
    660      1.75      maxv 
    661  1.75.4.1      phil 		/* Sanity length check */
    662  1.75.4.1      phil 		if (vap->iv_des_ssid[i].len != scan->ssid[1])
    663  1.75.4.1      phil 			continue;
    664      1.75      maxv 
    665  1.75.4.1      phil 		/* Note: SSID in the scan entry is the IE format */
    666  1.75.4.1      phil 		if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2,
    667  1.75.4.1      phil 		    vap->iv_des_ssid[i].len) == 0)
    668  1.75.4.1      phil 			goto ok;
    669       1.1    dyoung 	}
    670      1.75      maxv 
    671  1.75.4.1      phil mismatch:
    672  1.75.4.1      phil 	return (0);
    673  1.75.4.1      phil ok:
    674  1.75.4.1      phil 	return (1);
    675      1.39    dyoung }
    676      1.65  christos 
    677      1.39    dyoung /*
    678      1.39    dyoung  * Handle 802.11 ad hoc network merge.  The
    679      1.39    dyoung  * convention, set by the Wireless Ethernet Compatibility Alliance
    680      1.39    dyoung  * (WECA), is that an 802.11 station will change its BSSID to match
    681      1.39    dyoung  * the "oldest" 802.11 ad hoc network, on the same channel, that
    682      1.39    dyoung  * has the station's desired SSID.  The "oldest" 802.11 network
    683      1.39    dyoung  * sends beacons with the greatest TSF timestamp.
    684      1.39    dyoung  *
    685      1.39    dyoung  * The caller is assumed to validate TSF's before attempting a merge.
    686      1.39    dyoung  *
    687      1.39    dyoung  * Return !0 if the BSSID changed, 0 otherwise.
    688      1.39    dyoung  */
    689      1.39    dyoung int
    690      1.45     skrll ieee80211_ibss_merge(struct ieee80211_node *ni)
    691      1.39    dyoung {
    692  1.75.4.1      phil #ifdef IEEE80211_DEBUG
    693  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
    694      1.45     skrll 	struct ieee80211com *ic = ni->ni_ic;
    695  1.75.4.1      phil #endif
    696      1.39    dyoung 
    697  1.75.4.1      phil 	if (! ieee80211_ibss_merge_check(ni))
    698      1.39    dyoung 		return 0;
    699  1.75.4.1      phil 
    700  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
    701      1.39    dyoung 		"%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
    702      1.39    dyoung 		ether_sprintf(ni->ni_bssid),
    703      1.39    dyoung 		ic->ic_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long",
    704      1.39    dyoung 		ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
    705      1.39    dyoung 		ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : ""
    706      1.39    dyoung 	);
    707  1.75.4.1      phil 	return ieee80211_sta_join1(ieee80211_ref_node(ni));
    708      1.39    dyoung }
    709      1.39    dyoung 
    710      1.39    dyoung /*
    711  1.75.4.1      phil  * Calculate HT channel promotion flags for all vaps.
    712  1.75.4.1      phil  * This assumes ni_chan have been setup for each vap.
    713      1.39    dyoung  */
    714  1.75.4.1      phil static int
    715  1.75.4.1      phil gethtadjustflags(struct ieee80211com *ic)
    716      1.39    dyoung {
    717  1.75.4.1      phil 	struct ieee80211vap *vap;
    718  1.75.4.1      phil 	int flags;
    719      1.39    dyoung 
    720  1.75.4.1      phil 	flags = 0;
    721  1.75.4.1      phil 	/* XXX locking */
    722  1.75.4.1      phil 	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
    723  1.75.4.1      phil 		if (vap->iv_state < IEEE80211_S_RUN)
    724  1.75.4.1      phil 			continue;
    725  1.75.4.1      phil 		switch (vap->iv_opmode) {
    726  1.75.4.1      phil 		case IEEE80211_M_WDS:
    727  1.75.4.1      phil 		case IEEE80211_M_STA:
    728  1.75.4.1      phil 		case IEEE80211_M_AHDEMO:
    729  1.75.4.1      phil 		case IEEE80211_M_HOSTAP:
    730  1.75.4.1      phil 		case IEEE80211_M_IBSS:
    731  1.75.4.1      phil 		case IEEE80211_M_MBSS:
    732  1.75.4.1      phil 			flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan);
    733  1.75.4.1      phil 			break;
    734  1.75.4.1      phil 		default:
    735  1.75.4.1      phil 			break;
    736  1.75.4.1      phil 		}
    737  1.75.4.1      phil 	}
    738  1.75.4.1      phil 	return flags;
    739  1.75.4.1      phil }
    740      1.75      maxv 
    741  1.75.4.1      phil /*
    742  1.75.4.1      phil  * Calculate VHT channel promotion flags for all vaps.
    743  1.75.4.1      phil  * This assumes ni_chan have been setup for each vap.
    744  1.75.4.1      phil  */
    745  1.75.4.1      phil static int
    746  1.75.4.1      phil getvhtadjustflags(struct ieee80211com *ic)
    747  1.75.4.1      phil {
    748  1.75.4.1      phil 	struct ieee80211vap *vap;
    749  1.75.4.1      phil 	int flags;
    750  1.75.4.1      phil 
    751  1.75.4.1      phil 	flags = 0;
    752  1.75.4.1      phil 	/* XXX locking */
    753  1.75.4.1      phil 	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
    754  1.75.4.1      phil 		if (vap->iv_state < IEEE80211_S_RUN)
    755  1.75.4.1      phil 			continue;
    756  1.75.4.1      phil 		switch (vap->iv_opmode) {
    757  1.75.4.1      phil 		case IEEE80211_M_WDS:
    758  1.75.4.1      phil 		case IEEE80211_M_STA:
    759  1.75.4.1      phil 		case IEEE80211_M_AHDEMO:
    760  1.75.4.1      phil 		case IEEE80211_M_HOSTAP:
    761  1.75.4.1      phil 		case IEEE80211_M_IBSS:
    762  1.75.4.1      phil 		case IEEE80211_M_MBSS:
    763  1.75.4.1      phil 			flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan);
    764  1.75.4.1      phil 			break;
    765  1.75.4.1      phil 		default:
    766  1.75.4.1      phil 			break;
    767  1.75.4.1      phil 		}
    768  1.75.4.1      phil 	}
    769  1.75.4.1      phil 	return flags;
    770  1.75.4.1      phil }
    771  1.75.4.1      phil 
    772  1.75.4.1      phil /*
    773  1.75.4.1      phil  * Check if the current channel needs to change based on whether
    774  1.75.4.1      phil  * any vap's are using HT20/HT40.  This is used to sync the state
    775  1.75.4.1      phil  * of ic_curchan after a channel width change on a running vap.
    776  1.75.4.1      phil  *
    777  1.75.4.1      phil  * Same applies for VHT.
    778  1.75.4.1      phil  */
    779  1.75.4.1      phil void
    780  1.75.4.1      phil ieee80211_sync_curchan(struct ieee80211com *ic)
    781  1.75.4.1      phil {
    782  1.75.4.1      phil 	struct ieee80211_channel *c;
    783  1.75.4.1      phil 
    784  1.75.4.1      phil 	c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
    785  1.75.4.1      phil 	c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic));
    786      1.75      maxv 
    787  1.75.4.1      phil 	if (c != ic->ic_curchan) {
    788  1.75.4.1      phil 		ic->ic_curchan = c;
    789  1.75.4.1      phil 		ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
    790  1.75.4.1      phil 		ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
    791  1.75.4.1      phil 		IEEE80211_UNLOCK(ic);
    792  1.75.4.1      phil 		ic->ic_set_channel(ic);
    793  1.75.4.1      phil 		ieee80211_radiotap_chan_change(ic);
    794  1.75.4.1      phil 		IEEE80211_LOCK(ic);
    795  1.75.4.1      phil 	}
    796  1.75.4.1      phil }
    797  1.75.4.1      phil 
    798  1.75.4.1      phil /*
    799  1.75.4.1      phil  * Setup the current channel.  The request channel may be
    800  1.75.4.1      phil  * promoted if other vap's are operating with HT20/HT40.
    801  1.75.4.1      phil  */
    802  1.75.4.1      phil void
    803  1.75.4.1      phil ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
    804  1.75.4.1      phil {
    805  1.75.4.1      phil 	if (ic->ic_htcaps & IEEE80211_HTC_HT) {
    806  1.75.4.1      phil 		int flags = gethtadjustflags(ic);
    807      1.39    dyoung 		/*
    808  1.75.4.1      phil 		 * Check for channel promotion required to support the
    809  1.75.4.1      phil 		 * set of running vap's.  This assumes we are called
    810  1.75.4.1      phil 		 * after ni_chan is setup for each vap.
    811      1.39    dyoung 		 */
    812  1.75.4.1      phil 		/* XXX VHT? */
    813  1.75.4.1      phil 		/* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */
    814  1.75.4.1      phil 		if (flags > ieee80211_htchanflags(c))
    815  1.75.4.1      phil 			c = ieee80211_ht_adjust_channel(ic, c, flags);
    816      1.39    dyoung 	}
    817      1.39    dyoung 
    818      1.39    dyoung 	/*
    819  1.75.4.1      phil 	 * VHT promotion - this will at least promote to VHT20/40
    820  1.75.4.1      phil 	 * based on what HT has done; it may further promote the
    821  1.75.4.1      phil 	 * channel to VHT80 or above.
    822  1.75.4.1      phil 	 */
    823  1.75.4.1      phil 	if (ic->ic_vhtcaps != 0) {
    824  1.75.4.1      phil 		int flags = getvhtadjustflags(ic);
    825  1.75.4.1      phil 		if (flags > ieee80211_vhtchanflags(c))
    826  1.75.4.1      phil 			c = ieee80211_vht_adjust_channel(ic, c, flags);
    827  1.75.4.1      phil 	}
    828  1.75.4.1      phil 
    829  1.75.4.1      phil 	ic->ic_bsschan = ic->ic_curchan = c;
    830  1.75.4.1      phil 	ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
    831  1.75.4.1      phil 	ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
    832  1.75.4.1      phil }
    833  1.75.4.1      phil 
    834  1.75.4.1      phil /*
    835  1.75.4.1      phil  * Change the current channel.  The channel change is guaranteed to have
    836  1.75.4.1      phil  * happened before the next state change.
    837  1.75.4.1      phil  */
    838  1.75.4.1      phil void
    839  1.75.4.1      phil ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c)
    840  1.75.4.1      phil {
    841  1.75.4.1      phil 	ieee80211_setupcurchan(ic, c);
    842  1.75.4.1      phil 	ieee80211_runtask(ic, &ic->ic_chan_task);
    843  1.75.4.1      phil }
    844  1.75.4.1      phil 
    845  1.75.4.1      phil void
    846  1.75.4.1      phil ieee80211_update_chw(struct ieee80211com *ic)
    847  1.75.4.1      phil {
    848  1.75.4.1      phil 
    849  1.75.4.1      phil 	ieee80211_setupcurchan(ic, ic->ic_curchan);
    850  1.75.4.1      phil 	ieee80211_runtask(ic, &ic->ic_chw_task);
    851  1.75.4.1      phil }
    852  1.75.4.1      phil 
    853  1.75.4.1      phil /*
    854  1.75.4.1      phil  * Join the specified IBSS/BSS network.  The node is assumed to
    855  1.75.4.1      phil  * be passed in with a held reference.
    856  1.75.4.1      phil  */
    857  1.75.4.1      phil static int
    858  1.75.4.1      phil ieee80211_sta_join1(struct ieee80211_node *selbs)
    859  1.75.4.1      phil {
    860  1.75.4.1      phil 	struct ieee80211vap *vap = selbs->ni_vap;
    861  1.75.4.1      phil 	struct ieee80211com *ic = selbs->ni_ic;
    862  1.75.4.1      phil 	struct ieee80211_node *obss;
    863  1.75.4.1      phil 	int canreassoc;
    864  1.75.4.1      phil 
    865  1.75.4.1      phil 	/*
    866      1.39    dyoung 	 * Committed to selbs, setup state.
    867      1.39    dyoung 	 */
    868  1.75.4.1      phil 	obss = vap->iv_bss;
    869  1.75.4.1      phil 	/*
    870  1.75.4.1      phil 	 * Check if old+new node have the same address in which
    871  1.75.4.1      phil 	 * case we can reassociate when operating in sta mode.
    872  1.75.4.1      phil 	 */
    873  1.75.4.1      phil 	canreassoc = (obss != NULL &&
    874  1.75.4.1      phil 		vap->iv_state == IEEE80211_S_RUN &&
    875  1.75.4.1      phil 		IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr));
    876  1.75.4.1      phil 	vap->iv_bss = selbs;		/* NB: caller assumed to bump refcnt */
    877      1.52    dyoung 	if (obss != NULL) {
    878  1.75.4.1      phil 		struct ieee80211_node_table *nt = obss->ni_table;
    879  1.75.4.1      phil 
    880      1.52    dyoung 		copy_bss(selbs, obss);
    881  1.75.4.1      phil 		ieee80211_node_decref(obss);	/* iv_bss reference */
    882  1.75.4.1      phil 
    883  1.75.4.1      phil 		IEEE80211_NODE_LOCK(nt);
    884  1.75.4.1      phil 		node_reclaim(nt, obss);		/* station table reference */
    885  1.75.4.1      phil 		IEEE80211_NODE_UNLOCK(nt);
    886  1.75.4.1      phil 
    887  1.75.4.1      phil 		obss = NULL;		/* NB: guard against later use */
    888      1.52    dyoung 	}
    889      1.75      maxv 
    890      1.39    dyoung 	/*
    891  1.75.4.1      phil 	 * Delete unusable rates; we've already checked
    892  1.75.4.1      phil 	 * that the negotiated rate set is acceptable.
    893  1.75.4.1      phil 	 */
    894  1.75.4.1      phil 	ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates,
    895  1.75.4.1      phil 		IEEE80211_F_DODEL | IEEE80211_F_JOIN);
    896  1.75.4.1      phil 
    897  1.75.4.1      phil 	ieee80211_setcurchan(ic, selbs->ni_chan);
    898  1.75.4.1      phil 	/*
    899      1.39    dyoung 	 * Set the erp state (mostly the slot time) to deal with
    900      1.39    dyoung 	 * the auto-select case; this should be redundant if the
    901      1.39    dyoung 	 * mode is locked.
    902  1.75.4.1      phil 	 */
    903      1.39    dyoung 	ieee80211_reset_erp(ic);
    904  1.75.4.1      phil 	ieee80211_wme_initparams(vap);
    905      1.39    dyoung 
    906  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_STA) {
    907  1.75.4.1      phil 		if (canreassoc) {
    908  1.75.4.1      phil 			/* Reassociate */
    909  1.75.4.1      phil 			ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
    910  1.75.4.1      phil 		} else {
    911  1.75.4.1      phil 			/*
    912  1.75.4.1      phil 			 * Act as if we received a DEAUTH frame in case we
    913  1.75.4.1      phil 			 * are invoked from the RUN state.  This will cause
    914  1.75.4.1      phil 			 * us to try to re-authenticate if we are operating
    915  1.75.4.1      phil 			 * as a station.
    916  1.75.4.1      phil 			 */
    917  1.75.4.1      phil 			ieee80211_new_state(vap, IEEE80211_S_AUTH,
    918  1.75.4.1      phil 				IEEE80211_FC0_SUBTYPE_DEAUTH);
    919  1.75.4.1      phil 		}
    920  1.75.4.1      phil 	} else
    921  1.75.4.1      phil 		ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
    922      1.39    dyoung 	return 1;
    923      1.39    dyoung }
    924      1.39    dyoung 
    925  1.75.4.1      phil int
    926  1.75.4.1      phil ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan,
    927  1.75.4.1      phil 	const struct ieee80211_scan_entry *se)
    928  1.75.4.1      phil {
    929  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
    930  1.75.4.1      phil 	struct ieee80211_node *ni;
    931  1.75.4.1      phil 	int do_ht = 0;
    932  1.75.4.1      phil 
    933  1.75.4.1      phil 	ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr);
    934  1.75.4.1      phil 	if (ni == NULL) {
    935  1.75.4.1      phil 		/* XXX msg */
    936  1.75.4.1      phil 		return 0;
    937  1.75.4.1      phil 	}
    938  1.75.4.1      phil 
    939  1.75.4.1      phil 	/*
    940  1.75.4.1      phil 	 * Expand scan state into node's format.
    941  1.75.4.1      phil 	 * XXX may not need all this stuff
    942  1.75.4.1      phil 	 */
    943  1.75.4.1      phil 	IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
    944  1.75.4.1      phil 	ni->ni_esslen = se->se_ssid[1];
    945  1.75.4.1      phil 	memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen);
    946  1.75.4.1      phil 	ni->ni_tstamp.tsf = se->se_tstamp.tsf;
    947  1.75.4.1      phil 	ni->ni_intval = se->se_intval;
    948  1.75.4.1      phil 	ni->ni_capinfo = se->se_capinfo;
    949  1.75.4.1      phil 	ni->ni_chan = chan;
    950  1.75.4.1      phil 	ni->ni_timoff = se->se_timoff;
    951  1.75.4.1      phil 	ni->ni_fhdwell = se->se_fhdwell;
    952  1.75.4.1      phil 	ni->ni_fhindex = se->se_fhindex;
    953  1.75.4.1      phil 	ni->ni_erp = se->se_erp;
    954  1.75.4.1      phil 	IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi);
    955  1.75.4.1      phil 	ni->ni_noise = se->se_noise;
    956  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_STA) {
    957  1.75.4.1      phil 		/* NB: only infrastructure mode requires an associd */
    958  1.75.4.1      phil 		ni->ni_flags |= IEEE80211_NODE_ASSOCID;
    959  1.75.4.1      phil 	}
    960  1.75.4.1      phil 
    961  1.75.4.1      phil 	if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) {
    962  1.75.4.1      phil 		ieee80211_ies_expand(&ni->ni_ies);
    963  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
    964  1.75.4.1      phil 		if (ni->ni_ies.ath_ie != NULL)
    965  1.75.4.1      phil 			ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
    966  1.75.4.1      phil #endif
    967  1.75.4.1      phil 		if (ni->ni_ies.htcap_ie != NULL)
    968  1.75.4.1      phil 			ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
    969  1.75.4.1      phil 		if (ni->ni_ies.htinfo_ie != NULL)
    970  1.75.4.1      phil 			ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
    971  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
    972  1.75.4.1      phil 		if (ni->ni_ies.meshid_ie != NULL)
    973  1.75.4.1      phil 			ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie);
    974  1.75.4.1      phil #endif
    975  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_TDMA
    976  1.75.4.1      phil 		if (ni->ni_ies.tdma_ie != NULL)
    977  1.75.4.1      phil 			ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie);
    978  1.75.4.1      phil #endif
    979  1.75.4.1      phil 		if (ni->ni_ies.vhtcap_ie != NULL)
    980  1.75.4.1      phil 			ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
    981  1.75.4.1      phil 		if (ni->ni_ies.vhtopmode_ie != NULL)
    982  1.75.4.1      phil 			ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
    983  1.75.4.1      phil 
    984  1.75.4.1      phil 		/* XXX parse BSSLOAD IE */
    985  1.75.4.1      phil 		/* XXX parse TXPWRENV IE */
    986  1.75.4.1      phil 		/* XXX parse APCHANREP IE */
    987  1.75.4.1      phil 	}
    988  1.75.4.1      phil 
    989  1.75.4.1      phil 	vap->iv_dtim_period = se->se_dtimperiod;
    990  1.75.4.1      phil 	vap->iv_dtim_count = 0;
    991  1.75.4.1      phil 
    992  1.75.4.1      phil 	/* NB: must be after ni_chan is setup */
    993  1.75.4.1      phil 	ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
    994  1.75.4.1      phil 		IEEE80211_F_DOSORT);
    995  1.75.4.1      phil 	if (ieee80211_iserp_rateset(&ni->ni_rates))
    996  1.75.4.1      phil 		ni->ni_flags |= IEEE80211_NODE_ERP;
    997  1.75.4.1      phil 
    998  1.75.4.1      phil 	/*
    999  1.75.4.1      phil 	 * Setup HT state for this node if it's available, otherwise
   1000  1.75.4.1      phil 	 * non-STA modes won't pick this state up.
   1001  1.75.4.1      phil 	 *
   1002  1.75.4.1      phil 	 * For IBSS and related modes that don't go through an
   1003  1.75.4.1      phil 	 * association request/response, the only appropriate place
   1004  1.75.4.1      phil 	 * to setup the HT state is here.
   1005  1.75.4.1      phil 	 */
   1006  1.75.4.1      phil 	if (ni->ni_ies.htinfo_ie != NULL &&
   1007  1.75.4.1      phil 	    ni->ni_ies.htcap_ie != NULL &&
   1008  1.75.4.1      phil 	    vap->iv_flags_ht & IEEE80211_FHT_HT) {
   1009  1.75.4.1      phil 		ieee80211_ht_node_init(ni);
   1010  1.75.4.1      phil 		ieee80211_ht_updateparams(ni,
   1011  1.75.4.1      phil 		    ni->ni_ies.htcap_ie,
   1012  1.75.4.1      phil 		    ni->ni_ies.htinfo_ie);
   1013  1.75.4.1      phil 		do_ht = 1;
   1014  1.75.4.1      phil 	}
   1015  1.75.4.1      phil 
   1016  1.75.4.1      phil 	/*
   1017  1.75.4.1      phil 	 * Setup VHT state for this node if it's available.
   1018  1.75.4.1      phil 	 * Same as the above.
   1019  1.75.4.1      phil 	 *
   1020  1.75.4.1      phil 	 * For now, don't allow 2GHz VHT operation.
   1021  1.75.4.1      phil 	 */
   1022  1.75.4.1      phil 	if (ni->ni_ies.vhtopmode_ie != NULL &&
   1023  1.75.4.1      phil 	    ni->ni_ies.vhtcap_ie != NULL &&
   1024  1.75.4.1      phil 	    vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
   1025  1.75.4.2      phil #if __FreeBSD__
   1026  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
   1027  1.75.4.1      phil 			printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
   1028  1.75.4.1      phil 			    __func__,
   1029  1.75.4.1      phil 			    ni->ni_macaddr,
   1030  1.75.4.1      phil 			    ":");
   1031  1.75.4.2      phil #elif __NetBSD__
   1032  1.75.4.2      phil 		if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
   1033  1.75.4.2      phil 			printf("%s: BSS %6ld: 2GHz channel, VHT info; ignoring\n",
   1034  1.75.4.2      phil 			    __func__, (long int)ni->ni_macaddr);
   1035  1.75.4.2      phil #endif
   1036  1.75.4.1      phil 		} else {
   1037  1.75.4.1      phil 			ieee80211_vht_node_init(ni);
   1038  1.75.4.1      phil 			ieee80211_vht_updateparams(ni,
   1039  1.75.4.1      phil 			    ni->ni_ies.vhtcap_ie,
   1040  1.75.4.1      phil 			    ni->ni_ies.vhtopmode_ie);
   1041  1.75.4.1      phil 			ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie,
   1042  1.75.4.1      phil 			    ni->ni_ies.vhtopmode_ie);
   1043  1.75.4.1      phil 			do_ht = 1;
   1044  1.75.4.1      phil 		}
   1045  1.75.4.1      phil 	}
   1046  1.75.4.1      phil 
   1047  1.75.4.1      phil 	/* Finally do the node channel change */
   1048  1.75.4.1      phil 	if (do_ht) {
   1049  1.75.4.1      phil 		ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
   1050  1.75.4.1      phil 		    ni->ni_ies.htinfo_ie);
   1051  1.75.4.1      phil 		ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie,
   1052  1.75.4.1      phil 		    IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
   1053  1.75.4.1      phil 		ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie);
   1054  1.75.4.1      phil 	}
   1055  1.75.4.1      phil 
   1056  1.75.4.1      phil 	/* XXX else check for ath FF? */
   1057  1.75.4.1      phil 	/* XXX QoS? Difficult given that WME config is specific to a master */
   1058  1.75.4.1      phil 
   1059  1.75.4.1      phil 	ieee80211_node_setuptxparms(ni);
   1060  1.75.4.1      phil 	ieee80211_ratectl_node_init(ni);
   1061  1.75.4.1      phil 
   1062  1.75.4.1      phil 	return ieee80211_sta_join1(ieee80211_ref_node(ni));
   1063  1.75.4.1      phil }
   1064  1.75.4.1      phil 
   1065      1.39    dyoung /*
   1066      1.39    dyoung  * Leave the specified IBSS/BSS network.  The node is assumed to
   1067      1.39    dyoung  * be passed in with a held reference.
   1068      1.39    dyoung  */
   1069      1.39    dyoung void
   1070  1.75.4.1      phil ieee80211_sta_leave(struct ieee80211_node *ni)
   1071      1.39    dyoung {
   1072  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   1073  1.75.4.1      phil 
   1074      1.39    dyoung 	ic->ic_node_cleanup(ni);
   1075  1.75.4.1      phil 	ieee80211_notify_node_leave(ni);
   1076       1.1    dyoung }
   1077       1.1    dyoung 
   1078  1.75.4.1      phil /*
   1079  1.75.4.1      phil  * Send a deauthenticate frame and drop the station.
   1080  1.75.4.1      phil  */
   1081  1.75.4.1      phil void
   1082  1.75.4.1      phil ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
   1083       1.5    dyoung {
   1084  1.75.4.1      phil 	/* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
   1085  1.75.4.1      phil 	ieee80211_ref_node(ni);
   1086  1.75.4.1      phil 	if (ni->ni_associd != 0)
   1087  1.75.4.1      phil 		IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
   1088  1.75.4.1      phil 	ieee80211_node_leave(ni);
   1089  1.75.4.1      phil 	ieee80211_free_node(ni);
   1090  1.75.4.1      phil }
   1091       1.5    dyoung 
   1092  1.75.4.1      phil static struct ieee80211_node *
   1093  1.75.4.1      phil node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1094  1.75.4.1      phil {
   1095  1.75.4.1      phil 	struct ieee80211_node *ni;
   1096  1.75.4.1      phil 
   1097  1.75.4.1      phil 	ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node),
   1098  1.75.4.1      phil 		M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
   1099  1.75.4.1      phil 	return ni;
   1100  1.75.4.1      phil }
   1101  1.75.4.1      phil 
   1102  1.75.4.1      phil /*
   1103  1.75.4.1      phil  * Initialize an ie blob with the specified data.  If previous
   1104  1.75.4.1      phil  * data exists re-use the data block.  As a side effect we clear
   1105  1.75.4.1      phil  * all references to specific ie's; the caller is required to
   1106  1.75.4.1      phil  * recalculate them.
   1107  1.75.4.1      phil  */
   1108  1.75.4.1      phil int
   1109  1.75.4.1      phil ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len)
   1110  1.75.4.1      phil {
   1111  1.75.4.1      phil 	/* NB: assumes data+len are the last fields */
   1112  1.75.4.1      phil 	memset(ies, 0, offsetof(struct ieee80211_ies, data));
   1113  1.75.4.1      phil 	if (ies->data != NULL && ies->len != len) {
   1114  1.75.4.1      phil 		/* data size changed */
   1115  1.75.4.1      phil 		IEEE80211_FREE(ies->data, M_80211_NODE_IE);
   1116  1.75.4.1      phil 		ies->data = NULL;
   1117  1.75.4.1      phil 	}
   1118  1.75.4.1      phil 	if (ies->data == NULL) {
   1119  1.75.4.1      phil 		ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE,
   1120  1.75.4.1      phil 		    IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
   1121  1.75.4.1      phil 		if (ies->data == NULL) {
   1122  1.75.4.1      phil 			ies->len = 0;
   1123  1.75.4.1      phil 			/* NB: pointers have already been zero'd above */
   1124  1.75.4.1      phil 			return 0;
   1125      1.55    dyoung 		}
   1126      1.55    dyoung 	}
   1127  1.75.4.1      phil 	memcpy(ies->data, data, len);
   1128  1.75.4.1      phil 	ies->len = len;
   1129  1.75.4.1      phil 	return 1;
   1130  1.75.4.1      phil }
   1131      1.75      maxv 
   1132  1.75.4.1      phil /*
   1133  1.75.4.1      phil  * Reclaim storage for an ie blob.
   1134  1.75.4.1      phil  */
   1135  1.75.4.1      phil void
   1136  1.75.4.1      phil ieee80211_ies_cleanup(struct ieee80211_ies *ies)
   1137  1.75.4.1      phil {
   1138  1.75.4.1      phil 	if (ies->data != NULL)
   1139  1.75.4.1      phil 		IEEE80211_FREE(ies->data, M_80211_NODE_IE);
   1140       1.5    dyoung }
   1141       1.5    dyoung 
   1142  1.75.4.1      phil /*
   1143  1.75.4.1      phil  * Expand an ie blob data contents and to fillin individual
   1144  1.75.4.1      phil  * ie pointers.  The data blob is assumed to be well-formed;
   1145  1.75.4.1      phil  * we don't do any validity checking of ie lengths.
   1146  1.75.4.1      phil  */
   1147  1.75.4.1      phil void
   1148  1.75.4.1      phil ieee80211_ies_expand(struct ieee80211_ies *ies)
   1149       1.1    dyoung {
   1150  1.75.4.1      phil 	uint8_t *ie;
   1151  1.75.4.1      phil 	int ielen;
   1152      1.39    dyoung 
   1153  1.75.4.1      phil 	ie = ies->data;
   1154  1.75.4.1      phil 	ielen = ies->len;
   1155  1.75.4.1      phil 	while (ielen > 0) {
   1156  1.75.4.1      phil 		switch (ie[0]) {
   1157  1.75.4.1      phil 		case IEEE80211_ELEMID_VENDOR:
   1158  1.75.4.1      phil 			if (iswpaoui(ie))
   1159  1.75.4.1      phil 				ies->wpa_ie = ie;
   1160  1.75.4.1      phil 			else if (iswmeoui(ie))
   1161  1.75.4.1      phil 				ies->wme_ie = ie;
   1162  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
   1163  1.75.4.1      phil 			else if (isatherosoui(ie))
   1164  1.75.4.1      phil 				ies->ath_ie = ie;
   1165  1.75.4.1      phil #endif
   1166  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_TDMA
   1167  1.75.4.1      phil 			else if (istdmaoui(ie))
   1168  1.75.4.1      phil 				ies->tdma_ie = ie;
   1169  1.75.4.1      phil #endif
   1170  1.75.4.1      phil 			break;
   1171  1.75.4.1      phil 		case IEEE80211_ELEMID_RSN:
   1172  1.75.4.1      phil 			ies->rsn_ie = ie;
   1173  1.75.4.1      phil 			break;
   1174  1.75.4.1      phil 		case IEEE80211_ELEMID_HTCAP:
   1175  1.75.4.1      phil 			ies->htcap_ie = ie;
   1176  1.75.4.1      phil 			break;
   1177  1.75.4.1      phil 		case IEEE80211_ELEMID_HTINFO:
   1178  1.75.4.1      phil 			ies->htinfo_ie = ie;
   1179  1.75.4.1      phil 			break;
   1180  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   1181  1.75.4.1      phil 		case IEEE80211_ELEMID_MESHID:
   1182  1.75.4.1      phil 			ies->meshid_ie = ie;
   1183  1.75.4.1      phil 			break;
   1184  1.75.4.1      phil #endif
   1185  1.75.4.1      phil 		case IEEE80211_ELEMID_VHT_CAP:
   1186  1.75.4.1      phil 			ies->vhtcap_ie = ie;
   1187  1.75.4.1      phil 			break;
   1188  1.75.4.1      phil 		case IEEE80211_ELEMID_VHT_OPMODE:
   1189  1.75.4.1      phil 			ies->vhtopmode_ie = ie;
   1190  1.75.4.1      phil 			break;
   1191  1.75.4.1      phil 		case IEEE80211_ELEMID_VHT_PWR_ENV:
   1192  1.75.4.1      phil 			ies->vhtpwrenv_ie = ie;
   1193  1.75.4.1      phil 			break;
   1194  1.75.4.1      phil 		case IEEE80211_ELEMID_BSSLOAD:
   1195  1.75.4.1      phil 			ies->bssload_ie = ie;
   1196  1.75.4.1      phil 			break;
   1197  1.75.4.1      phil 		case IEEE80211_ELEMID_APCHANREP:
   1198  1.75.4.1      phil 			ies->apchanrep_ie = ie;
   1199  1.75.4.1      phil 			break;
   1200  1.75.4.1      phil 		}
   1201  1.75.4.1      phil 		ielen -= 2 + ie[1];
   1202  1.75.4.1      phil 		ie += 2 + ie[1];
   1203  1.75.4.1      phil 	}
   1204       1.1    dyoung }
   1205       1.1    dyoung 
   1206      1.39    dyoung /*
   1207      1.39    dyoung  * Reclaim any resources in a node and reset any critical
   1208      1.39    dyoung  * state.  Typically nodes are free'd immediately after,
   1209      1.39    dyoung  * but in some cases the storage may be reused so we need
   1210      1.39    dyoung  * to insure consistent state (should probably fix that).
   1211      1.39    dyoung  */
   1212       1.1    dyoung static void
   1213      1.39    dyoung node_cleanup(struct ieee80211_node *ni)
   1214      1.22   mycroft {
   1215  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   1216      1.39    dyoung 	struct ieee80211com *ic = ni->ni_ic;
   1217  1.75.4.1      phil 	int i;
   1218      1.39    dyoung 
   1219      1.39    dyoung 	/* NB: preserve ni_table */
   1220      1.39    dyoung 	if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
   1221  1.75.4.1      phil 		if (vap->iv_opmode != IEEE80211_M_STA)
   1222  1.75.4.1      phil 			vap->iv_ps_sta--;
   1223      1.39    dyoung 		ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
   1224  1.75.4.1      phil 		IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
   1225  1.75.4.1      phil 		    "power save mode off, %u sta's in ps mode", vap->iv_ps_sta);
   1226      1.39    dyoung 	}
   1227  1.75.4.1      phil 	/*
   1228  1.75.4.1      phil 	 * Cleanup any VHT and HT-related state.
   1229  1.75.4.1      phil 	 */
   1230  1.75.4.1      phil 	if (ni->ni_flags & IEEE80211_NODE_VHT)
   1231  1.75.4.1      phil 		ieee80211_vht_node_cleanup(ni);
   1232  1.75.4.1      phil 	if (ni->ni_flags & IEEE80211_NODE_HT)
   1233  1.75.4.1      phil 		ieee80211_ht_node_cleanup(ni);
   1234  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
   1235  1.75.4.1      phil 	/* Always do FF node cleanup; for A-MSDU */
   1236  1.75.4.1      phil 	ieee80211_ff_node_cleanup(ni);
   1237  1.75.4.1      phil #endif
   1238  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   1239  1.75.4.1      phil 	/*
   1240  1.75.4.1      phil 	 * Cleanup any mesh-related state.
   1241  1.75.4.1      phil 	 */
   1242  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_MBSS)
   1243  1.75.4.1      phil 		ieee80211_mesh_node_cleanup(ni);
   1244  1.75.4.1      phil #endif
   1245  1.75.4.1      phil 	/*
   1246  1.75.4.1      phil 	 * Clear any staging queue entries.
   1247  1.75.4.1      phil 	 */
   1248  1.75.4.1      phil 	ieee80211_ageq_drain_node(&ic->ic_stageq, ni);
   1249      1.75      maxv 
   1250      1.42    dyoung 	/*
   1251      1.42    dyoung 	 * Clear AREF flag that marks the authorization refcnt bump
   1252      1.42    dyoung 	 * has happened.  This is probably not needed as the node
   1253      1.42    dyoung 	 * should always be removed from the table so not found but
   1254      1.42    dyoung 	 * do it just in case.
   1255  1.75.4.1      phil 	 * Likewise clear the ASSOCID flag as these flags are intended
   1256  1.75.4.1      phil 	 * to be managed in tandem.
   1257      1.42    dyoung 	 */
   1258  1.75.4.1      phil 	ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID);
   1259      1.39    dyoung 
   1260      1.39    dyoung 	/*
   1261      1.39    dyoung 	 * Drain power save queue and, if needed, clear TIM.
   1262      1.39    dyoung 	 */
   1263  1.75.4.1      phil 	if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL)
   1264  1.75.4.1      phil 		vap->iv_set_tim(ni, 0);
   1265      1.39    dyoung 
   1266      1.39    dyoung 	ni->ni_associd = 0;
   1267      1.39    dyoung 	if (ni->ni_challenge != NULL) {
   1268  1.75.4.1      phil 		IEEE80211_FREE(ni->ni_challenge, M_80211_NODE);
   1269      1.39    dyoung 		ni->ni_challenge = NULL;
   1270      1.39    dyoung 	}
   1271      1.39    dyoung 	/*
   1272      1.39    dyoung 	 * Preserve SSID, WPA, and WME ie's so the bss node is
   1273      1.39    dyoung 	 * reusable during a re-auth/re-assoc state transition.
   1274      1.39    dyoung 	 * If we remove these data they will not be recreated
   1275      1.39    dyoung 	 * because they come from a probe-response or beacon frame
   1276      1.39    dyoung 	 * which cannot be expected prior to the association-response.
   1277      1.39    dyoung 	 * This should not be an issue when operating in other modes
   1278      1.39    dyoung 	 * as stations leaving always go through a full state transition
   1279      1.39    dyoung 	 * which will rebuild this state.
   1280      1.39    dyoung 	 *
   1281      1.39    dyoung 	 * XXX does this leave us open to inheriting old state?
   1282      1.39    dyoung 	 */
   1283  1.75.4.1      phil 	for (i = 0; i < nitems(ni->ni_rxfrag); i++)
   1284      1.39    dyoung 		if (ni->ni_rxfrag[i] != NULL) {
   1285      1.39    dyoung 			m_freem(ni->ni_rxfrag[i]);
   1286      1.39    dyoung 			ni->ni_rxfrag[i] = NULL;
   1287      1.39    dyoung 		}
   1288      1.45     skrll 	/*
   1289      1.45     skrll 	 * Must be careful here to remove any key map entry w/o a LOR.
   1290      1.45     skrll 	 */
   1291      1.45     skrll 	ieee80211_node_delucastkey(ni);
   1292      1.22   mycroft }
   1293      1.22   mycroft 
   1294      1.22   mycroft static void
   1295      1.39    dyoung node_free(struct ieee80211_node *ni)
   1296       1.1    dyoung {
   1297      1.39    dyoung 	struct ieee80211com *ic = ni->ni_ic;
   1298      1.39    dyoung 
   1299  1.75.4.1      phil 	ieee80211_ratectl_node_deinit(ni);
   1300      1.39    dyoung 	ic->ic_node_cleanup(ni);
   1301  1.75.4.1      phil 	ieee80211_ies_cleanup(&ni->ni_ies);
   1302  1.75.4.1      phil 	ieee80211_psq_cleanup(&ni->ni_psq);
   1303  1.75.4.1      phil 	IEEE80211_FREE(ni, M_80211_NODE);
   1304  1.75.4.1      phil }
   1305  1.75.4.1      phil 
   1306  1.75.4.1      phil static void
   1307  1.75.4.1      phil node_age(struct ieee80211_node *ni)
   1308  1.75.4.1      phil {
   1309  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   1310  1.75.4.1      phil 
   1311  1.75.4.1      phil 	/*
   1312  1.75.4.1      phil 	 * Age frames on the power save queue.
   1313  1.75.4.1      phil 	 */
   1314  1.75.4.1      phil 	if (ieee80211_node_psq_age(ni) != 0 &&
   1315  1.75.4.1      phil 	    ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL)
   1316  1.75.4.1      phil 		vap->iv_set_tim(ni, 0);
   1317  1.75.4.1      phil 	/*
   1318  1.75.4.1      phil 	 * Age out HT resources (e.g. frames on the
   1319  1.75.4.1      phil 	 * A-MPDU reorder queues).
   1320  1.75.4.1      phil 	 */
   1321  1.75.4.1      phil 	if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT))
   1322  1.75.4.1      phil 		ieee80211_ht_node_age(ni);
   1323       1.1    dyoung }
   1324       1.1    dyoung 
   1325  1.75.4.1      phil static int8_t
   1326      1.39    dyoung node_getrssi(const struct ieee80211_node *ni)
   1327       1.9    dyoung {
   1328  1.75.4.1      phil 	uint32_t avgrssi = ni->ni_avgrssi;
   1329  1.75.4.1      phil 	int32_t rssi;
   1330  1.75.4.1      phil 
   1331  1.75.4.1      phil 	if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER)
   1332  1.75.4.1      phil 		return 0;
   1333  1.75.4.1      phil 	rssi = IEEE80211_RSSI_GET(avgrssi);
   1334  1.75.4.1      phil 	return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
   1335  1.75.4.1      phil }
   1336  1.75.4.1      phil 
   1337  1.75.4.1      phil static void
   1338  1.75.4.1      phil node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
   1339  1.75.4.1      phil {
   1340  1.75.4.1      phil 	*rssi = node_getrssi(ni);
   1341  1.75.4.1      phil 	*noise = ni->ni_noise;
   1342  1.75.4.1      phil }
   1343  1.75.4.1      phil 
   1344  1.75.4.1      phil static void
   1345  1.75.4.1      phil node_getmimoinfo(const struct ieee80211_node *ni,
   1346  1.75.4.1      phil 	struct ieee80211_mimo_info *info)
   1347  1.75.4.1      phil {
   1348  1.75.4.1      phil 	int i;
   1349  1.75.4.1      phil 	uint32_t avgrssi;
   1350  1.75.4.1      phil 	int32_t rssi;
   1351  1.75.4.1      phil 
   1352  1.75.4.1      phil 	bzero(info, sizeof(*info));
   1353  1.75.4.1      phil 
   1354  1.75.4.1      phil 	for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) {
   1355  1.75.4.1      phil 		/* Note: for now, just pri20 channel info */
   1356  1.75.4.1      phil 		avgrssi = ni->ni_mimo_rssi_ctl[i];
   1357  1.75.4.1      phil 		if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) {
   1358  1.75.4.1      phil 			info->ch[i].rssi[0] = 0;
   1359  1.75.4.1      phil 		} else {
   1360  1.75.4.1      phil 			rssi = IEEE80211_RSSI_GET(avgrssi);
   1361  1.75.4.1      phil 			info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi;
   1362  1.75.4.1      phil 		}
   1363  1.75.4.1      phil 		info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i];
   1364  1.75.4.1      phil 	}
   1365  1.75.4.1      phil 
   1366  1.75.4.1      phil 	/* XXX ext radios? */
   1367  1.75.4.1      phil 
   1368  1.75.4.1      phil 	/* XXX EVM? */
   1369       1.9    dyoung }
   1370       1.9    dyoung 
   1371       1.1    dyoung static void
   1372  1.75.4.1      phil ieee80211_add_node_nt(struct ieee80211_node_table *nt,
   1373  1.75.4.1      phil     struct ieee80211_node *ni)
   1374       1.1    dyoung {
   1375      1.39    dyoung 	struct ieee80211com *ic = nt->nt_ic;
   1376       1.1    dyoung 	int hash;
   1377       1.1    dyoung 
   1378  1.75.4.1      phil 	IEEE80211_NODE_LOCK_ASSERT(nt);
   1379  1.75.4.1      phil 
   1380  1.75.4.1      phil 	hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr);
   1381  1.75.4.1      phil 	(void) ic;	/* XXX IEEE80211_NODE_HASH */
   1382  1.75.4.1      phil 	TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
   1383  1.75.4.1      phil 	LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
   1384  1.75.4.1      phil 	nt->nt_count++;
   1385  1.75.4.1      phil 	ni->ni_table = nt;
   1386  1.75.4.1      phil }
   1387  1.75.4.1      phil 
   1388  1.75.4.1      phil static void
   1389  1.75.4.1      phil ieee80211_del_node_nt(struct ieee80211_node_table *nt,
   1390  1.75.4.1      phil     struct ieee80211_node *ni)
   1391  1.75.4.1      phil {
   1392  1.75.4.1      phil 
   1393  1.75.4.1      phil 	IEEE80211_NODE_LOCK_ASSERT(nt);
   1394  1.75.4.1      phil 
   1395  1.75.4.1      phil 	TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
   1396  1.75.4.1      phil 	LIST_REMOVE(ni, ni_hash);
   1397  1.75.4.1      phil 	nt->nt_count--;
   1398  1.75.4.1      phil 	KASSERT(nt->nt_count >= 0,
   1399  1.75.4.1      phil 	    ("nt_count is negative (%d)!\n", nt->nt_count));
   1400  1.75.4.1      phil 	ni->ni_table = NULL;
   1401  1.75.4.1      phil }
   1402  1.75.4.1      phil 
   1403  1.75.4.1      phil struct ieee80211_node *
   1404  1.75.4.1      phil ieee80211_alloc_node(struct ieee80211_node_table *nt,
   1405  1.75.4.1      phil 	struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1406  1.75.4.1      phil {
   1407  1.75.4.1      phil 	struct ieee80211com *ic = nt->nt_ic;
   1408  1.75.4.1      phil 	struct ieee80211_node *ni;
   1409  1.75.4.1      phil 
   1410  1.75.4.1      phil 	ni = ic->ic_node_alloc(vap, macaddr);
   1411  1.75.4.1      phil 	if (ni == NULL) {
   1412  1.75.4.1      phil 		vap->iv_stats.is_rx_nodealloc++;
   1413  1.75.4.1      phil 		return NULL;
   1414  1.75.4.1      phil 	}
   1415  1.75.4.1      phil 
   1416  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
   1417      1.39    dyoung 		"%s %p<%s> in %s table\n", __func__, ni,
   1418      1.39    dyoung 		ether_sprintf(macaddr), nt->nt_name);
   1419      1.39    dyoung 
   1420       1.1    dyoung 	IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
   1421      1.39    dyoung 	ieee80211_node_initref(ni);		/* mark referenced */
   1422      1.39    dyoung 	ni->ni_chan = IEEE80211_CHAN_ANYC;
   1423      1.39    dyoung 	ni->ni_authmode = IEEE80211_AUTH_OPEN;
   1424      1.39    dyoung 	ni->ni_txpower = ic->ic_txpowlimit;	/* max power */
   1425  1.75.4.1      phil 	ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
   1426  1.75.4.1      phil 	ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
   1427  1.75.4.1      phil 	ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER;
   1428      1.39    dyoung 	ni->ni_inact_reload = nt->nt_inact_init;
   1429      1.39    dyoung 	ni->ni_inact = ni->ni_inact_reload;
   1430  1.75.4.1      phil 	ni->ni_ath_defkeyix = 0x7fff;
   1431  1.75.4.1      phil 	ieee80211_psq_init(&ni->ni_psq, "unknown");
   1432  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   1433  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_MBSS)
   1434  1.75.4.1      phil 		ieee80211_mesh_node_init(vap, ni);
   1435  1.75.4.1      phil #endif
   1436      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   1437  1.75.4.1      phil 	ieee80211_add_node_nt(nt, ni);
   1438  1.75.4.1      phil 	ni->ni_vap = vap;
   1439      1.39    dyoung 	ni->ni_ic = ic;
   1440      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   1441       1.1    dyoung 
   1442  1.75.4.1      phil 	IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
   1443  1.75.4.1      phil 	    "%s: inact_reload %u", __func__, ni->ni_inact_reload);
   1444  1.75.4.1      phil 
   1445  1.75.4.1      phil 	ieee80211_ratectl_node_init(ni);
   1446      1.39    dyoung 
   1447       1.1    dyoung 	return ni;
   1448       1.1    dyoung }
   1449       1.1    dyoung 
   1450      1.45     skrll /*
   1451      1.45     skrll  * Craft a temporary node suitable for sending a management frame
   1452      1.45     skrll  * to the specified station.  We craft only as much state as we
   1453      1.45     skrll  * need to do the work since the node will be immediately reclaimed
   1454      1.45     skrll  * once the send completes.
   1455      1.45     skrll  */
   1456      1.45     skrll struct ieee80211_node *
   1457  1.75.4.1      phil ieee80211_tmp_node(struct ieee80211vap *vap,
   1458  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1459      1.45     skrll {
   1460  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
   1461      1.45     skrll 	struct ieee80211_node *ni;
   1462      1.45     skrll 
   1463  1.75.4.1      phil 	ni = ic->ic_node_alloc(vap, macaddr);
   1464      1.45     skrll 	if (ni != NULL) {
   1465  1.75.4.1      phil 		struct ieee80211_node *bss = vap->iv_bss;
   1466  1.75.4.1      phil 
   1467  1.75.4.1      phil 		IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
   1468      1.45     skrll 			"%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr));
   1469      1.45     skrll 
   1470  1.75.4.1      phil 		ni->ni_table = NULL;		/* NB: pedantic */
   1471  1.75.4.1      phil 		ni->ni_ic = ic;			/* NB: needed to set channel */
   1472  1.75.4.1      phil 		ni->ni_vap = vap;
   1473  1.75.4.1      phil 
   1474      1.45     skrll 		IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
   1475  1.75.4.1      phil 		IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
   1476      1.45     skrll 		ieee80211_node_initref(ni);		/* mark referenced */
   1477      1.45     skrll 		/* NB: required by ieee80211_fix_rate */
   1478  1.75.4.1      phil 		ieee80211_node_set_chan(ni, bss->ni_chan);
   1479  1.75.4.1      phil 		ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
   1480      1.45     skrll 			IEEE80211_KEYIX_NONE);
   1481  1.75.4.1      phil 		ni->ni_txpower = bss->ni_txpower;
   1482      1.45     skrll 		/* XXX optimize away */
   1483  1.75.4.1      phil 		ieee80211_psq_init(&ni->ni_psq, "unknown");
   1484      1.45     skrll 
   1485  1.75.4.1      phil 		ieee80211_ratectl_node_init(ni);
   1486      1.45     skrll 	} else {
   1487      1.45     skrll 		/* XXX msg */
   1488  1.75.4.1      phil 		vap->iv_stats.is_rx_nodealloc++;
   1489      1.45     skrll 	}
   1490      1.45     skrll 	return ni;
   1491      1.45     skrll }
   1492      1.45     skrll 
   1493       1.1    dyoung struct ieee80211_node *
   1494  1.75.4.1      phil ieee80211_dup_bss(struct ieee80211vap *vap,
   1495  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1496       1.1    dyoung {
   1497  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
   1498      1.39    dyoung 	struct ieee80211_node *ni;
   1499      1.39    dyoung 
   1500  1.75.4.1      phil 	ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr);
   1501       1.1    dyoung 	if (ni != NULL) {
   1502  1.75.4.1      phil 		struct ieee80211_node *bss = vap->iv_bss;
   1503      1.11    dyoung 		/*
   1504  1.75.4.1      phil 		 * Inherit from iv_bss.
   1505      1.11    dyoung 		 */
   1506  1.75.4.1      phil 		copy_bss(ni, bss);
   1507  1.75.4.1      phil 		IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid);
   1508  1.75.4.1      phil 		ieee80211_node_set_chan(ni, bss->ni_chan);
   1509      1.75      maxv 	}
   1510       1.1    dyoung 	return ni;
   1511       1.1    dyoung }
   1512       1.1    dyoung 
   1513  1.75.4.1      phil /*
   1514  1.75.4.1      phil  * Create a bss node for a legacy WDS vap.  The far end does
   1515  1.75.4.1      phil  * not associate so we just create create a new node and
   1516  1.75.4.1      phil  * simulate an association.  The caller is responsible for
   1517  1.75.4.1      phil  * installing the node as the bss node and handling any further
   1518  1.75.4.1      phil  * setup work like authorizing the port.
   1519  1.75.4.1      phil  */
   1520  1.75.4.1      phil struct ieee80211_node *
   1521  1.75.4.1      phil ieee80211_node_create_wds(struct ieee80211vap *vap,
   1522  1.75.4.1      phil 	const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan)
   1523  1.75.4.1      phil {
   1524  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
   1525  1.75.4.1      phil 	struct ieee80211_node *ni;
   1526  1.75.4.1      phil 
   1527  1.75.4.1      phil 	/* XXX check if node already in sta table? */
   1528  1.75.4.1      phil 	ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid);
   1529  1.75.4.1      phil 	if (ni != NULL) {
   1530  1.75.4.1      phil 		ni->ni_wdsvap = vap;
   1531  1.75.4.1      phil 		IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
   1532  1.75.4.1      phil 		/*
   1533  1.75.4.1      phil 		 * Inherit any manually configured settings.
   1534  1.75.4.1      phil 		 */
   1535  1.75.4.1      phil 		copy_bss(ni, vap->iv_bss);
   1536  1.75.4.1      phil 		ieee80211_node_set_chan(ni, chan);
   1537  1.75.4.1      phil 		/* NB: propagate ssid so available to WPA supplicant */
   1538  1.75.4.1      phil 		ni->ni_esslen = vap->iv_des_ssid[0].len;
   1539  1.75.4.1      phil 		memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
   1540  1.75.4.1      phil 		/* NB: no associd for peer */
   1541  1.75.4.1      phil 		/*
   1542  1.75.4.1      phil 		 * There are no management frames to use to
   1543  1.75.4.1      phil 		 * discover neighbor capabilities, so blindly
   1544  1.75.4.1      phil 		 * propagate the local configuration.
   1545  1.75.4.1      phil 		 */
   1546  1.75.4.1      phil 		if (vap->iv_flags & IEEE80211_F_WME)
   1547  1.75.4.1      phil 			ni->ni_flags |= IEEE80211_NODE_QOS;
   1548  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
   1549  1.75.4.1      phil 		if (vap->iv_flags & IEEE80211_F_FF)
   1550  1.75.4.1      phil 			ni->ni_flags |= IEEE80211_NODE_FF;
   1551  1.75.4.1      phil #endif
   1552  1.75.4.1      phil 		/* XXX VHT */
   1553  1.75.4.1      phil 		if ((ic->ic_htcaps & IEEE80211_HTC_HT) &&
   1554  1.75.4.1      phil 		    (vap->iv_flags_ht & IEEE80211_FHT_HT)) {
   1555  1.75.4.1      phil 			/*
   1556  1.75.4.1      phil 			 * Device is HT-capable and HT is enabled for
   1557  1.75.4.1      phil 			 * the vap; setup HT operation.  On return
   1558  1.75.4.1      phil 			 * ni_chan will be adjusted to an HT channel.
   1559  1.75.4.1      phil 			 */
   1560  1.75.4.1      phil 			ieee80211_ht_wds_init(ni);
   1561  1.75.4.1      phil 			if (vap->iv_flags_vht & IEEE80211_FVHT_VHT) {
   1562  1.75.4.1      phil 				printf("%s: TODO: vht_wds_init\n", __func__);
   1563  1.75.4.1      phil 			}
   1564  1.75.4.1      phil 		} else {
   1565  1.75.4.1      phil 			struct ieee80211_channel *c = ni->ni_chan;
   1566  1.75.4.1      phil 			/*
   1567  1.75.4.1      phil 			 * Force a legacy channel to be used.
   1568  1.75.4.1      phil 			 */
   1569  1.75.4.1      phil 			c = ieee80211_find_channel(ic,
   1570  1.75.4.1      phil 			    c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT);
   1571  1.75.4.1      phil 			KASSERT(c != NULL, ("no legacy channel, %u/%x",
   1572  1.75.4.1      phil 			    ni->ni_chan->ic_freq, ni->ni_chan->ic_flags));
   1573  1.75.4.1      phil 			ni->ni_chan = c;
   1574  1.75.4.1      phil 		}
   1575  1.75.4.1      phil 	}
   1576  1.75.4.1      phil 	return ni;
   1577  1.75.4.1      phil }
   1578  1.75.4.1      phil 
   1579  1.75.4.1      phil struct ieee80211_node *
   1580      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   1581  1.75.4.1      phil ieee80211_find_node_locked_debug(struct ieee80211_node_table *nt,
   1582  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
   1583      1.39    dyoung #else
   1584  1.75.4.1      phil ieee80211_find_node_locked(struct ieee80211_node_table *nt,
   1585  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1586      1.39    dyoung #endif
   1587       1.1    dyoung {
   1588       1.1    dyoung 	struct ieee80211_node *ni;
   1589       1.1    dyoung 	int hash;
   1590      1.11    dyoung 
   1591      1.39    dyoung 	IEEE80211_NODE_LOCK_ASSERT(nt);
   1592       1.1    dyoung 
   1593  1.75.4.1      phil 	hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
   1594      1.39    dyoung 	LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
   1595       1.1    dyoung 		if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
   1596      1.39    dyoung 			ieee80211_ref_node(ni);	/* mark referenced */
   1597      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   1598  1.75.4.1      phil 			IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   1599      1.39    dyoung 			    "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
   1600      1.39    dyoung 			    func, line,
   1601      1.39    dyoung 			    ni, ether_sprintf(ni->ni_macaddr),
   1602      1.39    dyoung 			    ieee80211_node_refcnt(ni));
   1603      1.39    dyoung #endif
   1604      1.11    dyoung 			return ni;
   1605       1.1    dyoung 		}
   1606       1.1    dyoung 	}
   1607      1.11    dyoung 	return NULL;
   1608      1.11    dyoung }
   1609      1.11    dyoung 
   1610      1.11    dyoung struct ieee80211_node *
   1611      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   1612      1.39    dyoung ieee80211_find_node_debug(struct ieee80211_node_table *nt,
   1613  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
   1614      1.39    dyoung #else
   1615  1.75.4.1      phil ieee80211_find_node(struct ieee80211_node_table *nt,
   1616  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1617      1.39    dyoung #endif
   1618      1.11    dyoung {
   1619      1.11    dyoung 	struct ieee80211_node *ni;
   1620      1.11    dyoung 
   1621      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   1622  1.75.4.1      phil 	ni = ieee80211_find_node_locked(nt, macaddr);
   1623      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   1624       1.7    dyoung 	return ni;
   1625       1.7    dyoung }
   1626       1.7    dyoung 
   1627       1.7    dyoung struct ieee80211_node *
   1628  1.75.4.1      phil #ifdef IEEE80211_DEBUG_REFCNT
   1629  1.75.4.1      phil ieee80211_find_vap_node_locked_debug(struct ieee80211_node_table *nt,
   1630  1.75.4.1      phil 	const struct ieee80211vap *vap,
   1631  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
   1632  1.75.4.1      phil #else
   1633  1.75.4.1      phil ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt,
   1634  1.75.4.1      phil 	const struct ieee80211vap *vap,
   1635  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1636  1.75.4.1      phil #endif
   1637       1.7    dyoung {
   1638       1.7    dyoung 	struct ieee80211_node *ni;
   1639  1.75.4.1      phil 	int hash;
   1640       1.7    dyoung 
   1641  1.75.4.1      phil 	IEEE80211_NODE_LOCK_ASSERT(nt);
   1642      1.45     skrll 
   1643  1.75.4.1      phil 	hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr);
   1644  1.75.4.1      phil 	LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
   1645  1.75.4.1      phil 		if (ni->ni_vap == vap &&
   1646  1.75.4.1      phil 		    IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
   1647  1.75.4.1      phil 			ieee80211_ref_node(ni);	/* mark referenced */
   1648  1.75.4.1      phil #ifdef IEEE80211_DEBUG_REFCNT
   1649  1.75.4.1      phil 			IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   1650  1.75.4.1      phil 			    "%s (%s:%u) %p<%s> refcnt %d\n", __func__,
   1651  1.75.4.1      phil 			    func, line,
   1652  1.75.4.1      phil 			    ni, ether_sprintf(ni->ni_macaddr),
   1653  1.75.4.1      phil 			    ieee80211_node_refcnt(ni));
   1654      1.45     skrll #endif
   1655  1.75.4.1      phil 			return ni;
   1656      1.45     skrll 		}
   1657      1.45     skrll 	}
   1658  1.75.4.1      phil 	return NULL;
   1659      1.45     skrll }
   1660      1.45     skrll 
   1661  1.75.4.1      phil struct ieee80211_node *
   1662  1.75.4.1      phil #ifdef IEEE80211_DEBUG_REFCNT
   1663  1.75.4.1      phil ieee80211_find_vap_node_debug(struct ieee80211_node_table *nt,
   1664  1.75.4.1      phil 	const struct ieee80211vap *vap,
   1665  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line)
   1666  1.75.4.1      phil #else
   1667  1.75.4.1      phil ieee80211_find_vap_node(struct ieee80211_node_table *nt,
   1668  1.75.4.1      phil 	const struct ieee80211vap *vap,
   1669  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1670  1.75.4.1      phil #endif
   1671      1.45     skrll {
   1672  1.75.4.1      phil 	struct ieee80211_node *ni;
   1673      1.45     skrll 
   1674  1.75.4.1      phil 	IEEE80211_NODE_LOCK(nt);
   1675  1.75.4.1      phil 	ni = ieee80211_find_vap_node_locked(nt, vap, macaddr);
   1676  1.75.4.1      phil 	IEEE80211_NODE_UNLOCK(nt);
   1677  1.75.4.1      phil 	return ni;
   1678      1.45     skrll }
   1679      1.45     skrll 
   1680      1.45     skrll /*
   1681  1.75.4.1      phil  * Fake up a node; this handles node discovery in adhoc mode.
   1682  1.75.4.1      phil  * Note that for the driver's benefit we we treat this like
   1683  1.75.4.1      phil  * an association so the driver has an opportunity to setup
   1684  1.75.4.1      phil  * it's private state.
   1685      1.45     skrll  */
   1686  1.75.4.1      phil struct ieee80211_node *
   1687  1.75.4.1      phil ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap,
   1688  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   1689      1.45     skrll {
   1690      1.45     skrll 	struct ieee80211_node *ni;
   1691      1.45     skrll 
   1692  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC,
   1693  1.75.4.1      phil 	    "%s: mac<%s>\n", __func__, ether_sprintf(macaddr));
   1694  1.75.4.1      phil 	ni = ieee80211_dup_bss(vap, macaddr);
   1695  1.75.4.1      phil 	if (ni != NULL) {
   1696  1.75.4.1      phil 		struct ieee80211com *ic = vap->iv_ic;
   1697  1.75.4.1      phil 
   1698  1.75.4.1      phil 		/* XXX no rate negotiation; just dup */
   1699  1.75.4.1      phil 		ni->ni_rates = vap->iv_bss->ni_rates;
   1700  1.75.4.1      phil 		if (ieee80211_iserp_rateset(&ni->ni_rates))
   1701  1.75.4.1      phil 			ni->ni_flags |= IEEE80211_NODE_ERP;
   1702  1.75.4.1      phil 		if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
   1703  1.75.4.1      phil 			/*
   1704  1.75.4.1      phil 			 * In adhoc demo mode there are no management
   1705  1.75.4.1      phil 			 * frames to use to discover neighbor capabilities,
   1706  1.75.4.1      phil 			 * so blindly propagate the local configuration
   1707  1.75.4.1      phil 			 * so we can do interesting things (e.g. use
   1708  1.75.4.1      phil 			 * WME to disable ACK's).
   1709  1.75.4.1      phil 			 */
   1710  1.75.4.1      phil 			/*
   1711  1.75.4.1      phil 			 * XXX TODO: 11n?
   1712  1.75.4.1      phil 			 */
   1713  1.75.4.1      phil 			if (vap->iv_flags & IEEE80211_F_WME)
   1714  1.75.4.1      phil 				ni->ni_flags |= IEEE80211_NODE_QOS;
   1715  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
   1716  1.75.4.1      phil 			if (vap->iv_flags & IEEE80211_F_FF)
   1717  1.75.4.1      phil 				ni->ni_flags |= IEEE80211_NODE_FF;
   1718  1.75.4.1      phil #endif
   1719  1.75.4.1      phil 		}
   1720  1.75.4.1      phil 		ieee80211_node_setuptxparms(ni);
   1721  1.75.4.1      phil 		ieee80211_ratectl_node_init(ni);
   1722  1.75.4.1      phil 
   1723  1.75.4.1      phil 		/*
   1724  1.75.4.1      phil 		 * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX,
   1725  1.75.4.1      phil 		 * not A-MPDU TX; not 11n rates, etc.  We'll cycle
   1726  1.75.4.1      phil 		 * that after we hear that we can indeed do 11n
   1727  1.75.4.1      phil 		 * (either by a beacon frame or by a probe response.)
   1728  1.75.4.1      phil 		 */
   1729  1.75.4.1      phil 
   1730  1.75.4.1      phil 		/*
   1731  1.75.4.1      phil 		 * This is the first time we see the node.
   1732  1.75.4.1      phil 		 */
   1733  1.75.4.1      phil 		if (ic->ic_newassoc != NULL)
   1734  1.75.4.1      phil 			ic->ic_newassoc(ni, 1);
   1735  1.75.4.1      phil 
   1736      1.45     skrll 		/*
   1737  1.75.4.1      phil 		 * Kick off a probe request to the given node;
   1738  1.75.4.1      phil 		 * we will then use the probe response to update
   1739  1.75.4.1      phil 		 * 11n/etc configuration state.
   1740  1.75.4.1      phil 		 *
   1741  1.75.4.1      phil 		 * XXX TODO: this isn't guaranteed, and until we get
   1742  1.75.4.1      phil 		 * a probe response, we won't be able to actually
   1743  1.75.4.1      phil 		 * do anything 802.11n related to the node.
   1744  1.75.4.1      phil 		 * So if this does indeed work, maybe we should hold
   1745  1.75.4.1      phil 		 * off on sending responses until we get the probe
   1746  1.75.4.1      phil 		 * response, or just default to some sensible subset
   1747  1.75.4.1      phil 		 * of 802.11n behaviour (eg always allow aggregation
   1748  1.75.4.1      phil 		 * negotiation TO us, but not FROM us, etc) so we
   1749  1.75.4.1      phil 		 * aren't entirely busted.
   1750      1.45     skrll 		 */
   1751  1.75.4.1      phil 		if (vap->iv_opmode == IEEE80211_M_IBSS) {
   1752  1.75.4.1      phil 			ieee80211_send_probereq(ni, /* node */
   1753  1.75.4.1      phil 				vap->iv_myaddr, /* SA */
   1754  1.75.4.1      phil 				ni->ni_macaddr, /* DA */
   1755  1.75.4.1      phil 				vap->iv_bss->ni_bssid, /* BSSID */
   1756  1.75.4.1      phil 				vap->iv_bss->ni_essid,
   1757  1.75.4.1      phil 				vap->iv_bss->ni_esslen); /* SSID */
   1758      1.45     skrll 		}
   1759      1.74      maxv 
   1760  1.75.4.1      phil 		/* XXX not right for 802.1x/WPA */
   1761  1.75.4.1      phil 		ieee80211_node_authorize(ni);
   1762      1.45     skrll 	}
   1763  1.75.4.1      phil 	return ni;
   1764  1.75.4.1      phil }
   1765      1.74      maxv 
   1766  1.75.4.1      phil void
   1767  1.75.4.1      phil ieee80211_init_neighbor(struct ieee80211_node *ni,
   1768  1.75.4.1      phil 	const struct ieee80211_frame *wh,
   1769  1.75.4.1      phil 	const struct ieee80211_scanparams *sp)
   1770  1.75.4.1      phil {
   1771  1.75.4.1      phil 	int do_ht_setup = 0, do_vht_setup = 0;
   1772      1.74      maxv 
   1773  1.75.4.1      phil 	ni->ni_esslen = sp->ssid[1];
   1774  1.75.4.1      phil 	memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
   1775      1.45     skrll 	IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
   1776  1.75.4.1      phil 	memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
   1777  1.75.4.1      phil 	ni->ni_intval = sp->bintval;
   1778  1.75.4.1      phil 	ni->ni_capinfo = sp->capinfo;
   1779  1.75.4.1      phil 	ni->ni_chan = ni->ni_ic->ic_curchan;
   1780  1.75.4.1      phil 	ni->ni_fhdwell = sp->fhdwell;
   1781  1.75.4.1      phil 	ni->ni_fhindex = sp->fhindex;
   1782  1.75.4.1      phil 	ni->ni_erp = sp->erp;
   1783  1.75.4.1      phil 	ni->ni_timoff = sp->timoff;
   1784  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   1785  1.75.4.1      phil 	if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS)
   1786  1.75.4.1      phil 		ieee80211_mesh_init_neighbor(ni, wh, sp);
   1787  1.75.4.1      phil #endif
   1788  1.75.4.1      phil 	if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) {
   1789  1.75.4.1      phil 		ieee80211_ies_expand(&ni->ni_ies);
   1790  1.75.4.1      phil 		if (ni->ni_ies.wme_ie != NULL)
   1791  1.75.4.1      phil 			ni->ni_flags |= IEEE80211_NODE_QOS;
   1792  1.75.4.1      phil 		else
   1793  1.75.4.1      phil 			ni->ni_flags &= ~IEEE80211_NODE_QOS;
   1794  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_SUPERG
   1795  1.75.4.1      phil 		if (ni->ni_ies.ath_ie != NULL)
   1796  1.75.4.1      phil 			ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
   1797  1.75.4.1      phil #endif
   1798  1.75.4.1      phil 		if (ni->ni_ies.htcap_ie != NULL)
   1799  1.75.4.1      phil 			ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie);
   1800  1.75.4.1      phil 		if (ni->ni_ies.htinfo_ie != NULL)
   1801  1.75.4.1      phil 			ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie);
   1802  1.75.4.1      phil 
   1803  1.75.4.1      phil 		if (ni->ni_ies.vhtcap_ie != NULL)
   1804  1.75.4.1      phil 			ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie);
   1805  1.75.4.1      phil 		if (ni->ni_ies.vhtopmode_ie != NULL)
   1806  1.75.4.1      phil 			ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie);
   1807  1.75.4.1      phil 
   1808  1.75.4.1      phil 		if ((ni->ni_ies.htcap_ie != NULL) &&
   1809  1.75.4.1      phil 		    (ni->ni_ies.htinfo_ie != NULL) &&
   1810  1.75.4.1      phil 		    (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) {
   1811  1.75.4.1      phil 			do_ht_setup = 1;
   1812  1.75.4.1      phil 		}
   1813  1.75.4.1      phil 
   1814  1.75.4.1      phil 		if ((ni->ni_ies.vhtcap_ie != NULL) &&
   1815  1.75.4.1      phil 		    (ni->ni_ies.vhtopmode_ie != NULL) &&
   1816  1.75.4.1      phil 		    (ni->ni_vap->iv_flags_vht & IEEE80211_FVHT_VHT)) {
   1817  1.75.4.1      phil 			do_vht_setup = 1;
   1818  1.75.4.1      phil 		}
   1819      1.45     skrll 
   1820      1.45     skrll 	}
   1821      1.74      maxv 
   1822      1.45     skrll 	/* NB: must be after ni_chan is setup */
   1823  1.75.4.1      phil 	ieee80211_setup_rates(ni, sp->rates, sp->xrates,
   1824  1.75.4.1      phil 		IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
   1825  1.75.4.1      phil 		IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
   1826  1.75.4.1      phil 
   1827  1.75.4.1      phil 	/*
   1828  1.75.4.1      phil 	 * If the neighbor is HT compatible, flip that on.
   1829  1.75.4.1      phil 	 */
   1830  1.75.4.1      phil 	if (do_ht_setup) {
   1831  1.75.4.1      phil 		IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
   1832  1.75.4.1      phil 		    "%s: doing HT setup\n", __func__);
   1833  1.75.4.1      phil 		ieee80211_ht_node_init(ni);
   1834  1.75.4.1      phil 		ieee80211_ht_updateparams(ni,
   1835  1.75.4.1      phil 		    ni->ni_ies.htcap_ie,
   1836  1.75.4.1      phil 		    ni->ni_ies.htinfo_ie);
   1837  1.75.4.1      phil 
   1838  1.75.4.1      phil 		if (do_vht_setup) {
   1839  1.75.4.1      phil 			if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
   1840  1.75.4.2      phil #if __FreeBSD__
   1841  1.75.4.1      phil 				printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n",
   1842  1.75.4.1      phil 				    __func__,
   1843  1.75.4.1      phil 				    ni->ni_macaddr,
   1844  1.75.4.1      phil 				    ":");
   1845  1.75.4.2      phil #elif __NetBSD__
   1846  1.75.4.2      phil 				printf("%s: BSS %6ld: 2GHz channel, VHT info; ignoring\n",
   1847  1.75.4.2      phil 				    __func__, (long int)ni->ni_macaddr);
   1848  1.75.4.2      phil #endif
   1849  1.75.4.1      phil 			} else {
   1850  1.75.4.1      phil 				ieee80211_vht_node_init(ni);
   1851  1.75.4.1      phil 				ieee80211_vht_updateparams(ni,
   1852  1.75.4.1      phil 				    ni->ni_ies.vhtcap_ie,
   1853  1.75.4.1      phil 				    ni->ni_ies.vhtopmode_ie);
   1854  1.75.4.1      phil 				ieee80211_setup_vht_rates(ni,
   1855  1.75.4.1      phil 				    ni->ni_ies.vhtcap_ie,
   1856  1.75.4.1      phil 				    ni->ni_ies.vhtopmode_ie);
   1857  1.75.4.1      phil 			}
   1858  1.75.4.1      phil 		}
   1859      1.45     skrll 
   1860  1.75.4.1      phil 		/*
   1861  1.75.4.1      phil 		 * Finally do the channel upgrade/change based
   1862  1.75.4.1      phil 		 * on the HT/VHT configuration.
   1863  1.75.4.1      phil 		 */
   1864  1.75.4.1      phil 		ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie,
   1865  1.75.4.1      phil 		    ni->ni_ies.htinfo_ie);
   1866  1.75.4.1      phil 		ieee80211_setup_htrates(ni,
   1867  1.75.4.1      phil 		    ni->ni_ies.htcap_ie,
   1868  1.75.4.1      phil 		    IEEE80211_F_JOIN | IEEE80211_F_DOBRS);
   1869  1.75.4.1      phil 		ieee80211_setup_basic_htrates(ni,
   1870  1.75.4.1      phil 		    ni->ni_ies.htinfo_ie);
   1871      1.46    dyoung 
   1872  1.75.4.1      phil 		ieee80211_node_setuptxparms(ni);
   1873  1.75.4.1      phil 		ieee80211_ratectl_node_init(ni);
   1874      1.46    dyoung 
   1875  1.75.4.1      phil 		/* Reassociate; we're now 11n/11ac */
   1876  1.75.4.1      phil 		/*
   1877  1.75.4.1      phil 		 * XXX TODO: this is the wrong thing to do -
   1878  1.75.4.1      phil 		 * we're calling it with isnew=1 so the ath(4)
   1879  1.75.4.1      phil 		 * driver reinitialises the rate tables.
   1880  1.75.4.1      phil 		 * This "mostly" works for ath(4), but it won't
   1881  1.75.4.1      phil 		 * be right for firmware devices which allocate
   1882  1.75.4.1      phil 		 * node states.
   1883  1.75.4.1      phil 		 *
   1884  1.75.4.1      phil 		 * So, do we just create a new node and delete
   1885  1.75.4.1      phil 		 * the old one? Or?
   1886  1.75.4.1      phil 		 */
   1887  1.75.4.1      phil 		if (ni->ni_ic->ic_newassoc)
   1888  1.75.4.1      phil 			ni->ni_ic->ic_newassoc(ni, 1);
   1889  1.75.4.1      phil 	}
   1890      1.46    dyoung }
   1891      1.46    dyoung 
   1892      1.45     skrll /*
   1893      1.45     skrll  * Do node discovery in adhoc mode on receipt of a beacon
   1894      1.45     skrll  * or probe response frame.  Note that for the driver's
   1895      1.45     skrll  * benefit we we treat this like an association so the
   1896  1.75.4.1      phil  * driver has an opportunity to setup it's private state.
   1897      1.45     skrll  */
   1898      1.45     skrll struct ieee80211_node *
   1899  1.75.4.1      phil ieee80211_add_neighbor(struct ieee80211vap *vap,
   1900      1.45     skrll 	const struct ieee80211_frame *wh,
   1901      1.45     skrll 	const struct ieee80211_scanparams *sp)
   1902      1.45     skrll {
   1903      1.45     skrll 	struct ieee80211_node *ni;
   1904      1.45     skrll 
   1905  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
   1906  1.75.4.1      phil 	    "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2));
   1907  1.75.4.1      phil 	ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */
   1908      1.45     skrll 	if (ni != NULL) {
   1909  1.75.4.1      phil 		struct ieee80211com *ic = vap->iv_ic;
   1910  1.75.4.1      phil 
   1911  1.75.4.1      phil 		ieee80211_init_neighbor(ni, wh, sp);
   1912  1.75.4.1      phil 		if (ieee80211_iserp_rateset(&ni->ni_rates))
   1913  1.75.4.1      phil 			ni->ni_flags |= IEEE80211_NODE_ERP;
   1914  1.75.4.1      phil 		ieee80211_node_setuptxparms(ni);
   1915  1.75.4.1      phil 		ieee80211_ratectl_node_init(ni);
   1916  1.75.4.1      phil 		if (ic->ic_newassoc != NULL)
   1917  1.75.4.1      phil 			ic->ic_newassoc(ni, 1);
   1918      1.39    dyoung 		/* XXX not right for 802.1x/WPA */
   1919      1.45     skrll 		ieee80211_node_authorize(ni);
   1920       1.7    dyoung 	}
   1921      1.39    dyoung 	return ni;
   1922       1.7    dyoung }
   1923       1.7    dyoung 
   1924  1.75.4.1      phil #define	IS_PROBEREQ(wh) \
   1925  1.75.4.1      phil 	((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \
   1926  1.75.4.1      phil 	    == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
   1927  1.75.4.1      phil #define	IS_BCAST_PROBEREQ(wh) \
   1928  1.75.4.1      phil 	(IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \
   1929  1.75.4.1      phil 	    ((const struct ieee80211_frame *)(wh))->i_addr3))
   1930  1.75.4.1      phil 
   1931  1.75.4.1      phil static __inline struct ieee80211_node *
   1932  1.75.4.1      phil _find_rxnode(struct ieee80211_node_table *nt,
   1933  1.75.4.1      phil     const struct ieee80211_frame_min *wh)
   1934  1.75.4.1      phil {
   1935  1.75.4.1      phil 	if (IS_BCAST_PROBEREQ(wh))
   1936  1.75.4.1      phil 		return NULL;		/* spam bcast probe req to all vap's */
   1937  1.75.4.1      phil 	return ieee80211_find_node_locked(nt, wh->i_addr2);
   1938  1.75.4.1      phil }
   1939  1.75.4.1      phil 
   1940       1.7    dyoung /*
   1941      1.39    dyoung  * Locate the node for sender, track state, and then pass the
   1942  1.75.4.1      phil  * (referenced) node up to the 802.11 layer for its use.  Note
   1943  1.75.4.1      phil  * we can return NULL if the sender is not in the table.
   1944       1.7    dyoung  */
   1945      1.39    dyoung struct ieee80211_node *
   1946      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   1947      1.39    dyoung ieee80211_find_rxnode_debug(struct ieee80211com *ic,
   1948      1.39    dyoung 	const struct ieee80211_frame_min *wh, const char *func, int line)
   1949      1.39    dyoung #else
   1950      1.39    dyoung ieee80211_find_rxnode(struct ieee80211com *ic,
   1951      1.39    dyoung 	const struct ieee80211_frame_min *wh)
   1952      1.39    dyoung #endif
   1953       1.7    dyoung {
   1954      1.39    dyoung 	struct ieee80211_node_table *nt;
   1955      1.39    dyoung 	struct ieee80211_node *ni;
   1956       1.7    dyoung 
   1957  1.75.4.1      phil 	nt = &ic->ic_sta;
   1958      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   1959  1.75.4.1      phil 	ni = _find_rxnode(nt, wh);
   1960      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   1961       1.7    dyoung 
   1962      1.45     skrll 	return ni;
   1963      1.45     skrll }
   1964      1.45     skrll 
   1965      1.45     skrll /*
   1966      1.45     skrll  * Like ieee80211_find_rxnode but use the supplied h/w
   1967      1.45     skrll  * key index as a hint to locate the node in the key
   1968      1.45     skrll  * mapping table.  If an entry is present at the key
   1969      1.45     skrll  * index we return it; otherwise do a normal lookup and
   1970      1.45     skrll  * update the mapping table if the station has a unicast
   1971      1.45     skrll  * key assigned to it.
   1972      1.45     skrll  */
   1973      1.45     skrll struct ieee80211_node *
   1974      1.45     skrll #ifdef IEEE80211_DEBUG_REFCNT
   1975      1.45     skrll ieee80211_find_rxnode_withkey_debug(struct ieee80211com *ic,
   1976      1.45     skrll 	const struct ieee80211_frame_min *wh, ieee80211_keyix keyix,
   1977      1.45     skrll 	const char *func, int line)
   1978      1.45     skrll #else
   1979      1.45     skrll ieee80211_find_rxnode_withkey(struct ieee80211com *ic,
   1980      1.45     skrll 	const struct ieee80211_frame_min *wh, ieee80211_keyix keyix)
   1981      1.45     skrll #endif
   1982      1.45     skrll {
   1983      1.45     skrll 	struct ieee80211_node_table *nt;
   1984      1.45     skrll 	struct ieee80211_node *ni;
   1985      1.45     skrll 
   1986  1.75.4.1      phil 	nt = &ic->ic_sta;
   1987      1.45     skrll 	IEEE80211_NODE_LOCK(nt);
   1988  1.75.4.1      phil 	if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax)
   1989      1.45     skrll 		ni = nt->nt_keyixmap[keyix];
   1990  1.75.4.1      phil 	else
   1991      1.45     skrll 		ni = NULL;
   1992      1.45     skrll 	if (ni == NULL) {
   1993  1.75.4.1      phil 		ni = _find_rxnode(nt, wh);
   1994  1.75.4.1      phil 		if (ni != NULL && nt->nt_keyixmap != NULL) {
   1995      1.45     skrll 			/*
   1996      1.45     skrll 			 * If the station has a unicast key cache slot
   1997      1.45     skrll 			 * assigned update the key->node mapping table.
   1998      1.45     skrll 			 */
   1999      1.45     skrll 			keyix = ni->ni_ucastkey.wk_rxkeyix;
   2000      1.45     skrll 			/* XXX can keyixmap[keyix] != NULL? */
   2001      1.45     skrll 			if (keyix < nt->nt_keyixmax &&
   2002      1.45     skrll 			    nt->nt_keyixmap[keyix] == NULL) {
   2003  1.75.4.1      phil 				IEEE80211_DPRINTF(ni->ni_vap,
   2004  1.75.4.1      phil 				    IEEE80211_MSG_NODE,
   2005      1.45     skrll 				    "%s: add key map entry %p<%s> refcnt %d\n",
   2006      1.45     skrll 				    __func__, ni, ether_sprintf(ni->ni_macaddr),
   2007      1.45     skrll 				    ieee80211_node_refcnt(ni)+1);
   2008      1.45     skrll 				nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni);
   2009      1.45     skrll 			}
   2010      1.45     skrll 		}
   2011      1.45     skrll 	} else {
   2012  1.75.4.1      phil 		if (IS_BCAST_PROBEREQ(wh))
   2013  1.75.4.1      phil 			ni = NULL;	/* spam bcast probe req to all vap's */
   2014  1.75.4.1      phil 		else
   2015  1.75.4.1      phil 			ieee80211_ref_node(ni);
   2016      1.45     skrll 	}
   2017      1.45     skrll 	IEEE80211_NODE_UNLOCK(nt);
   2018      1.45     skrll 
   2019      1.45     skrll 	return ni;
   2020      1.45     skrll }
   2021  1.75.4.1      phil #undef IS_BCAST_PROBEREQ
   2022  1.75.4.1      phil #undef IS_PROBEREQ
   2023       1.7    dyoung 
   2024      1.39    dyoung /*
   2025      1.39    dyoung  * Return a reference to the appropriate node for sending
   2026      1.39    dyoung  * a data frame.  This handles node discovery in adhoc networks.
   2027      1.33    dyoung  */
   2028       1.7    dyoung struct ieee80211_node *
   2029      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   2030  1.75.4.1      phil ieee80211_find_txnode_debug(struct ieee80211vap *vap,
   2031  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN],
   2032      1.39    dyoung 	const char *func, int line)
   2033      1.39    dyoung #else
   2034  1.75.4.1      phil ieee80211_find_txnode(struct ieee80211vap *vap,
   2035  1.75.4.1      phil 	const uint8_t macaddr[IEEE80211_ADDR_LEN])
   2036      1.39    dyoung #endif
   2037       1.7    dyoung {
   2038  1.75.4.1      phil 	struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
   2039       1.7    dyoung 	struct ieee80211_node *ni;
   2040       1.7    dyoung 
   2041      1.39    dyoung 	/*
   2042      1.39    dyoung 	 * The destination address should be in the node table
   2043      1.45     skrll 	 * unless this is a multicast/broadcast frame.  We can
   2044      1.45     skrll 	 * also optimize station mode operation, all frames go
   2045      1.45     skrll 	 * to the bss node.
   2046      1.39    dyoung 	 */
   2047      1.39    dyoung 	/* XXX can't hold lock across dup_bss 'cuz of recursive locking */
   2048      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   2049  1.75.4.1      phil 	if (vap->iv_opmode == IEEE80211_M_STA ||
   2050  1.75.4.1      phil 	    vap->iv_opmode == IEEE80211_M_WDS ||
   2051  1.75.4.1      phil 	    IEEE80211_IS_MULTICAST(macaddr))
   2052  1.75.4.1      phil 		ni = ieee80211_ref_node(vap->iv_bss);
   2053      1.45     skrll 	else
   2054  1.75.4.1      phil 		ni = ieee80211_find_node_locked(nt, macaddr);
   2055      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   2056      1.15    dyoung 
   2057      1.39    dyoung 	if (ni == NULL) {
   2058  1.75.4.1      phil 		if (vap->iv_opmode == IEEE80211_M_IBSS ||
   2059  1.75.4.1      phil 		    vap->iv_opmode == IEEE80211_M_AHDEMO) {
   2060      1.39    dyoung 			/*
   2061      1.39    dyoung 			 * In adhoc mode cons up a node for the destination.
   2062      1.39    dyoung 			 * Note that we need an additional reference for the
   2063  1.75.4.1      phil 			 * caller to be consistent with
   2064  1.75.4.1      phil 			 * ieee80211_find_node_locked.
   2065  1.75.4.1      phil 			 */
   2066  1.75.4.1      phil 			/*
   2067  1.75.4.1      phil 			 * XXX TODO: this doesn't fake up 11n state; we need
   2068  1.75.4.1      phil 			 * to find another way to get it upgraded.
   2069      1.39    dyoung 			 */
   2070  1.75.4.1      phil 			ni = ieee80211_fakeup_adhoc_node(vap, macaddr);
   2071      1.39    dyoung 			if (ni != NULL)
   2072  1.75.4.1      phil 				(void) ieee80211_ref_node(ni);
   2073      1.39    dyoung 		} else {
   2074  1.75.4.1      phil 			IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr,
   2075  1.75.4.1      phil 			    "no node, discard frame (%s)", __func__);
   2076  1.75.4.1      phil 			vap->iv_stats.is_tx_nonode++;
   2077      1.39    dyoung 		}
   2078      1.39    dyoung 	}
   2079      1.39    dyoung 	return ni;
   2080       1.1    dyoung }
   2081       1.1    dyoung 
   2082  1.75.4.1      phil static void
   2083  1.75.4.1      phil _ieee80211_free_node(struct ieee80211_node *ni)
   2084       1.1    dyoung {
   2085  1.75.4.1      phil 	struct ieee80211_node_table *nt = ni->ni_table;
   2086      1.75      maxv 
   2087  1.75.4.1      phil 	/*
   2088  1.75.4.1      phil 	 * NB: careful about referencing the vap as it may be
   2089  1.75.4.1      phil 	 * gone if the last reference was held by a driver.
   2090  1.75.4.1      phil 	 * We know the com will always be present so it's safe
   2091  1.75.4.1      phil 	 * to use ni_ic below to reclaim resources.
   2092  1.75.4.1      phil 	 */
   2093  1.75.4.1      phil #if 0
   2094  1.75.4.1      phil 	IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
   2095  1.75.4.1      phil 		"%s %p<%s> in %s table\n", __func__, ni,
   2096  1.75.4.1      phil 		ether_sprintf(ni->ni_macaddr),
   2097  1.75.4.1      phil 		nt != NULL ? nt->nt_name : "<gone>");
   2098      1.61  gmcgarry #endif
   2099  1.75.4.1      phil 	if (ni->ni_associd != 0) {
   2100  1.75.4.1      phil 		struct ieee80211vap *vap = ni->ni_vap;
   2101  1.75.4.1      phil 		if (vap->iv_aid_bitmap != NULL)
   2102  1.75.4.1      phil 			IEEE80211_AID_CLR(vap, ni->ni_associd);
   2103       1.1    dyoung 	}
   2104  1.75.4.1      phil 	if (nt != NULL)
   2105  1.75.4.1      phil 		ieee80211_del_node_nt(nt, ni);
   2106  1.75.4.1      phil 	ni->ni_ic->ic_node_free(ni);
   2107       1.1    dyoung }
   2108       1.1    dyoung 
   2109      1.39    dyoung /*
   2110  1.75.4.1      phil  * Clear any entry in the unicast key mapping table.
   2111      1.39    dyoung  */
   2112  1.75.4.1      phil static int
   2113  1.75.4.1      phil node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
   2114      1.39    dyoung {
   2115  1.75.4.1      phil 	ieee80211_keyix keyix;
   2116      1.72  christos 
   2117  1.75.4.1      phil 	keyix = ni->ni_ucastkey.wk_rxkeyix;
   2118  1.75.4.1      phil 	if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
   2119  1.75.4.1      phil 	    nt->nt_keyixmap[keyix] == ni) {
   2120  1.75.4.1      phil 		IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   2121  1.75.4.1      phil 			"%s: %p<%s> clear key map entry %u\n",
   2122  1.75.4.1      phil 			__func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
   2123  1.75.4.1      phil 		nt->nt_keyixmap[keyix] = NULL;
   2124  1.75.4.1      phil 		ieee80211_node_decref(ni);
   2125  1.75.4.1      phil 		return 1;
   2126      1.39    dyoung 	}
   2127      1.75      maxv 
   2128  1.75.4.1      phil 	return 0;
   2129       1.1    dyoung }
   2130       1.1    dyoung 
   2131       1.1    dyoung void
   2132      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   2133      1.39    dyoung ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
   2134      1.39    dyoung #else
   2135      1.39    dyoung ieee80211_free_node(struct ieee80211_node *ni)
   2136      1.39    dyoung #endif
   2137      1.39    dyoung {
   2138      1.39    dyoung 	struct ieee80211_node_table *nt = ni->ni_table;
   2139      1.39    dyoung 
   2140      1.39    dyoung #ifdef IEEE80211_DEBUG_REFCNT
   2141  1.75.4.1      phil 	IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   2142      1.39    dyoung 		"%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni,
   2143      1.39    dyoung 		 ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1);
   2144      1.39    dyoung #endif
   2145      1.45     skrll 	if (nt != NULL) {
   2146      1.45     skrll 		IEEE80211_NODE_LOCK(nt);
   2147      1.45     skrll 		if (ieee80211_node_dectestref(ni)) {
   2148      1.45     skrll 			/*
   2149      1.45     skrll 			 * Last reference, reclaim state.
   2150      1.45     skrll 			 */
   2151      1.39    dyoung 			_ieee80211_free_node(ni);
   2152  1.75.4.1      phil 		} else if (ieee80211_node_refcnt(ni) == 1)
   2153  1.75.4.1      phil 			if (node_clear_keyixmap(nt, ni))
   2154      1.45     skrll 				_ieee80211_free_node(ni);
   2155      1.45     skrll 		IEEE80211_NODE_UNLOCK(nt);
   2156      1.45     skrll 	} else {
   2157      1.45     skrll 		if (ieee80211_node_dectestref(ni))
   2158      1.39    dyoung 			_ieee80211_free_node(ni);
   2159      1.39    dyoung 	}
   2160      1.39    dyoung }
   2161      1.39    dyoung 
   2162      1.39    dyoung /*
   2163      1.45     skrll  * Reclaim a unicast key and clear any key cache state.
   2164      1.45     skrll  */
   2165      1.45     skrll int
   2166      1.45     skrll ieee80211_node_delucastkey(struct ieee80211_node *ni)
   2167      1.45     skrll {
   2168      1.45     skrll 	struct ieee80211com *ic = ni->ni_ic;
   2169      1.45     skrll 	struct ieee80211_node_table *nt = &ic->ic_sta;
   2170      1.45     skrll 	struct ieee80211_node *nikey;
   2171      1.45     skrll 	ieee80211_keyix keyix;
   2172      1.45     skrll 	int isowned, status;
   2173      1.45     skrll 
   2174      1.45     skrll 	/*
   2175      1.45     skrll 	 * NB: We must beware of LOR here; deleting the key
   2176      1.45     skrll 	 * can cause the crypto layer to block traffic updates
   2177      1.45     skrll 	 * which can generate a LOR against the node table lock;
   2178      1.45     skrll 	 * grab it here and stash the key index for our use below.
   2179      1.45     skrll 	 *
   2180      1.45     skrll 	 * Must also beware of recursion on the node table lock.
   2181      1.45     skrll 	 * When called from node_cleanup we may already have
   2182      1.45     skrll 	 * the node table lock held.  Unfortunately there's no
   2183      1.45     skrll 	 * way to separate out this path so we must do this
   2184      1.45     skrll 	 * conditionally.
   2185      1.45     skrll 	 */
   2186      1.45     skrll 	isowned = IEEE80211_NODE_IS_LOCKED(nt);
   2187      1.45     skrll 	if (!isowned)
   2188      1.45     skrll 		IEEE80211_NODE_LOCK(nt);
   2189  1.75.4.1      phil 	nikey = NULL;
   2190  1.75.4.1      phil 	status = 1;		/* NB: success */
   2191  1.75.4.1      phil 	if (ni->ni_ucastkey.wk_keyix != IEEE80211_KEYIX_NONE) {
   2192  1.75.4.1      phil 		keyix = ni->ni_ucastkey.wk_rxkeyix;
   2193  1.75.4.1      phil 		status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey);
   2194  1.75.4.1      phil 		if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) {
   2195  1.75.4.1      phil 			nikey = nt->nt_keyixmap[keyix];
   2196  1.75.4.1      phil 			nt->nt_keyixmap[keyix] = NULL;
   2197  1.75.4.1      phil 		}
   2198  1.75.4.1      phil 	}
   2199      1.45     skrll 	if (!isowned)
   2200  1.75.4.1      phil 		IEEE80211_NODE_UNLOCK(nt);
   2201      1.45     skrll 
   2202      1.45     skrll 	if (nikey != NULL) {
   2203  1.75.4.1      phil 		KASSERT(nikey == ni,
   2204      1.45     skrll 			("key map out of sync, ni %p nikey %p", ni, nikey));
   2205  1.75.4.1      phil 		IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   2206      1.45     skrll 			"%s: delete key map entry %p<%s> refcnt %d\n",
   2207      1.45     skrll 			__func__, ni, ether_sprintf(ni->ni_macaddr),
   2208      1.45     skrll 			ieee80211_node_refcnt(ni)-1);
   2209      1.45     skrll 		ieee80211_free_node(ni);
   2210      1.45     skrll 	}
   2211      1.45     skrll 	return status;
   2212      1.45     skrll }
   2213      1.45     skrll 
   2214      1.45     skrll /*
   2215      1.39    dyoung  * Reclaim a node.  If this is the last reference count then
   2216      1.39    dyoung  * do the normal free work.  Otherwise remove it from the node
   2217      1.39    dyoung  * table and mark it gone by clearing the back-reference.
   2218      1.39    dyoung  */
   2219      1.39    dyoung static void
   2220      1.39    dyoung node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
   2221      1.39    dyoung {
   2222      1.45     skrll 
   2223      1.45     skrll 	IEEE80211_NODE_LOCK_ASSERT(nt);
   2224      1.39    dyoung 
   2225  1.75.4.1      phil 	IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
   2226      1.39    dyoung 		"%s: remove %p<%s> from %s table, refcnt %d\n",
   2227      1.39    dyoung 		__func__, ni, ether_sprintf(ni->ni_macaddr),
   2228      1.39    dyoung 		nt->nt_name, ieee80211_node_refcnt(ni)-1);
   2229      1.45     skrll 	/*
   2230      1.45     skrll 	 * Clear any entry in the unicast key mapping table.
   2231      1.45     skrll 	 * We need to do it here so rx lookups don't find it
   2232      1.45     skrll 	 * in the mapping table even if it's not in the hash
   2233      1.45     skrll 	 * table.  We cannot depend on the mapping table entry
   2234      1.45     skrll 	 * being cleared because the node may not be free'd.
   2235      1.45     skrll 	 */
   2236  1.75.4.1      phil 	(void)node_clear_keyixmap(nt, ni);
   2237  1.75.4.1      phil 	if (!ieee80211_node_dectestref(ni)) {
   2238  1.75.4.1      phil 		/*
   2239  1.75.4.1      phil 		 * Other references are present, just remove the
   2240  1.75.4.1      phil 		 * node from the table so it cannot be found.  When
   2241  1.75.4.1      phil 		 * the references are dropped storage will be
   2242  1.75.4.1      phil 		 * reclaimed.
   2243  1.75.4.1      phil 		 */
   2244  1.75.4.1      phil 		ieee80211_del_node_nt(nt, ni);
   2245  1.75.4.1      phil 	} else
   2246  1.75.4.1      phil 		_ieee80211_free_node(ni);
   2247  1.75.4.1      phil }
   2248  1.75.4.1      phil 
   2249  1.75.4.1      phil /*
   2250  1.75.4.1      phil  * Node table support.
   2251  1.75.4.1      phil  */
   2252  1.75.4.1      phil 
   2253  1.75.4.1      phil static void
   2254  1.75.4.1      phil ieee80211_node_table_init(struct ieee80211com *ic,
   2255  1.75.4.1      phil 	struct ieee80211_node_table *nt,
   2256  1.75.4.1      phil 	const char *name, int inact, int keyixmax)
   2257  1.75.4.1      phil {
   2258  1.75.4.1      phil 
   2259  1.75.4.1      phil 	nt->nt_ic = ic;
   2260  1.75.4.1      phil 	IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name);
   2261  1.75.4.1      phil 	TAILQ_INIT(&nt->nt_node);
   2262  1.75.4.1      phil 	nt->nt_count = 0;
   2263  1.75.4.1      phil 	nt->nt_name = name;
   2264  1.75.4.1      phil 	nt->nt_inact_init = inact;
   2265  1.75.4.1      phil 	nt->nt_keyixmax = keyixmax;
   2266  1.75.4.1      phil 	if (nt->nt_keyixmax > 0) {
   2267  1.75.4.1      phil 		nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC(
   2268  1.75.4.1      phil 			keyixmax * sizeof(struct ieee80211_node *),
   2269  1.75.4.1      phil 			M_80211_NODE,
   2270  1.75.4.1      phil 			IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
   2271  1.75.4.1      phil 		if (nt->nt_keyixmap == NULL)
   2272  1.75.4.1      phil 			ic_printf(ic,
   2273  1.75.4.1      phil 			    "Cannot allocate key index map with %u entries\n",
   2274  1.75.4.1      phil 			    keyixmax);
   2275  1.75.4.1      phil 	} else
   2276  1.75.4.1      phil 		nt->nt_keyixmap = NULL;
   2277  1.75.4.1      phil }
   2278  1.75.4.1      phil 
   2279  1.75.4.1      phil static void
   2280  1.75.4.1      phil ieee80211_node_table_reset(struct ieee80211_node_table *nt,
   2281  1.75.4.1      phil 	struct ieee80211vap *match)
   2282  1.75.4.1      phil {
   2283  1.75.4.1      phil 	struct ieee80211_node *ni, *next;
   2284  1.75.4.1      phil 
   2285  1.75.4.1      phil 	IEEE80211_NODE_LOCK(nt);
   2286  1.75.4.1      phil 	TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
   2287  1.75.4.1      phil 		if (match != NULL && ni->ni_vap != match)
   2288  1.75.4.1      phil 			continue;
   2289  1.75.4.1      phil 		/* XXX can this happen?  if so need's work */
   2290  1.75.4.1      phil 		if (ni->ni_associd != 0) {
   2291  1.75.4.1      phil 			struct ieee80211vap *vap = ni->ni_vap;
   2292  1.75.4.1      phil 
   2293  1.75.4.1      phil 			if (vap->iv_auth->ia_node_leave != NULL)
   2294  1.75.4.1      phil 				vap->iv_auth->ia_node_leave(ni);
   2295  1.75.4.1      phil 			if (vap->iv_aid_bitmap != NULL)
   2296  1.75.4.1      phil 				IEEE80211_AID_CLR(vap, ni->ni_associd);
   2297  1.75.4.1      phil 		}
   2298  1.75.4.1      phil 		ni->ni_wdsvap = NULL;		/* clear reference */
   2299  1.75.4.1      phil 		node_reclaim(nt, ni);
   2300  1.75.4.1      phil 	}
   2301  1.75.4.1      phil 	if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) {
   2302  1.75.4.1      phil 		/*
   2303  1.75.4.1      phil 		 * Make a separate pass to clear references to this vap
   2304  1.75.4.1      phil 		 * held by DWDS entries.  They will not be matched above
   2305  1.75.4.1      phil 		 * because ni_vap will point to the ap vap but we still
   2306  1.75.4.1      phil 		 * need to clear ni_wdsvap when the WDS vap is destroyed
   2307  1.75.4.1      phil 		 * and/or reset.
   2308  1.75.4.1      phil 		 */
   2309  1.75.4.1      phil 		TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next)
   2310  1.75.4.1      phil 			if (ni->ni_wdsvap == match)
   2311  1.75.4.1      phil 				ni->ni_wdsvap = NULL;
   2312  1.75.4.1      phil 	}
   2313  1.75.4.1      phil 	IEEE80211_NODE_UNLOCK(nt);
   2314  1.75.4.1      phil }
   2315  1.75.4.1      phil 
   2316  1.75.4.1      phil static void
   2317  1.75.4.1      phil ieee80211_node_table_cleanup(struct ieee80211_node_table *nt)
   2318  1.75.4.1      phil {
   2319  1.75.4.1      phil 	ieee80211_node_table_reset(nt, NULL);
   2320  1.75.4.1      phil 	if (nt->nt_keyixmap != NULL) {
   2321  1.75.4.1      phil #ifdef DIAGNOSTIC
   2322  1.75.4.1      phil 		/* XXX verify all entries are NULL */
   2323  1.75.4.1      phil 		int i;
   2324  1.75.4.1      phil 		for (i = 0; i < nt->nt_keyixmax; i++)
   2325  1.75.4.1      phil 			if (nt->nt_keyixmap[i] != NULL)
   2326  1.75.4.1      phil 				printf("%s: %s[%u] still active\n", __func__,
   2327  1.75.4.1      phil 					nt->nt_name, i);
   2328  1.75.4.1      phil #endif
   2329  1.75.4.1      phil 		IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE);
   2330  1.75.4.1      phil 		nt->nt_keyixmap = NULL;
   2331  1.75.4.1      phil 	}
   2332  1.75.4.1      phil 	IEEE80211_NODE_LOCK_DESTROY(nt);
   2333  1.75.4.1      phil }
   2334  1.75.4.1      phil 
   2335  1.75.4.1      phil static void
   2336  1.75.4.1      phil timeout_stations(void *arg __unused, struct ieee80211_node *ni)
   2337  1.75.4.1      phil {
   2338  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   2339  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   2340  1.75.4.1      phil 
   2341  1.75.4.1      phil 	/*
   2342  1.75.4.1      phil 	 * Only process stations when in RUN state.  This
   2343  1.75.4.1      phil 	 * insures, for example, that we don't timeout an
   2344  1.75.4.1      phil 	 * inactive station during CAC.  Note that CSA state
   2345  1.75.4.1      phil 	 * is actually handled in ieee80211_node_timeout as
   2346  1.75.4.1      phil 	 * it applies to more than timeout processing.
   2347  1.75.4.1      phil 	 */
   2348  1.75.4.1      phil 	if (vap->iv_state != IEEE80211_S_RUN)
   2349  1.75.4.1      phil 		return;
   2350  1.75.4.1      phil 	/*
   2351  1.75.4.1      phil 	 * Ignore entries for which have yet to receive an
   2352  1.75.4.1      phil 	 * authentication frame.  These are transient and
   2353  1.75.4.1      phil 	 * will be reclaimed when the last reference to them
   2354  1.75.4.1      phil 	 * goes away (when frame xmits complete).
   2355  1.75.4.1      phil 	 */
   2356  1.75.4.1      phil 	if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
   2357  1.75.4.1      phil 	     vap->iv_opmode == IEEE80211_M_STA) &&
   2358  1.75.4.1      phil 	    (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
   2359  1.75.4.1      phil 		return;
   2360  1.75.4.1      phil 	/*
   2361  1.75.4.1      phil 	 * Free fragment if not needed anymore
   2362  1.75.4.1      phil 	 * (last fragment older than 1s).
   2363  1.75.4.1      phil 	 * XXX doesn't belong here, move to node_age
   2364  1.75.4.1      phil 	 */
   2365  1.75.4.1      phil 	if (ni->ni_rxfrag[0] != NULL &&
   2366  1.75.4.1      phil 	    ticks > ni->ni_rxfragstamp + hz) {
   2367  1.75.4.1      phil 		m_freem(ni->ni_rxfrag[0]);
   2368  1.75.4.1      phil 		ni->ni_rxfrag[0] = NULL;
   2369  1.75.4.1      phil 	}
   2370  1.75.4.1      phil 	if (ni->ni_inact > 0) {
   2371  1.75.4.1      phil 		ni->ni_inact--;
   2372  1.75.4.1      phil 		IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
   2373  1.75.4.1      phil 		    "%s: inact %u inact_reload %u nrates %u",
   2374  1.75.4.1      phil 		    __func__, ni->ni_inact, ni->ni_inact_reload,
   2375  1.75.4.1      phil 		    ni->ni_rates.rs_nrates);
   2376  1.75.4.1      phil 	}
   2377  1.75.4.1      phil 	/*
   2378  1.75.4.1      phil 	 * Special case ourself; we may be idle for extended periods
   2379  1.75.4.1      phil 	 * of time and regardless reclaiming our state is wrong.
   2380  1.75.4.1      phil 	 * XXX run ic_node_age
   2381  1.75.4.1      phil 	 */
   2382  1.75.4.1      phil 	/* XXX before inact decrement? */
   2383  1.75.4.1      phil 	if (ni == vap->iv_bss)
   2384  1.75.4.1      phil 		return;
   2385  1.75.4.1      phil 	if (ni->ni_associd != 0 ||
   2386  1.75.4.1      phil 	    (vap->iv_opmode == IEEE80211_M_IBSS ||
   2387  1.75.4.1      phil 	     vap->iv_opmode == IEEE80211_M_AHDEMO)) {
   2388  1.75.4.1      phil 		/*
   2389  1.75.4.1      phil 		 * Age/drain resources held by the station.
   2390  1.75.4.1      phil 		 */
   2391  1.75.4.1      phil 		ic->ic_node_age(ni);
   2392  1.75.4.1      phil 		/*
   2393  1.75.4.1      phil 		 * Probe the station before time it out.  We
   2394  1.75.4.1      phil 		 * send a null data frame which may not be
   2395  1.75.4.1      phil 		 * universally supported by drivers (need it
   2396  1.75.4.1      phil 		 * for ps-poll support so it should be...).
   2397  1.75.4.1      phil 		 *
   2398  1.75.4.1      phil 		 * XXX don't probe the station unless we've
   2399  1.75.4.1      phil 		 *     received a frame from them (and have
   2400  1.75.4.1      phil 		 *     some idea of the rates they are capable
   2401  1.75.4.1      phil 		 *     of); this will get fixed more properly
   2402  1.75.4.1      phil 		 *     soon with better handling of the rate set.
   2403  1.75.4.1      phil 		 */
   2404  1.75.4.1      phil 		if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
   2405  1.75.4.1      phil 		    (0 < ni->ni_inact &&
   2406  1.75.4.1      phil 		     ni->ni_inact <= vap->iv_inact_probe) &&
   2407  1.75.4.1      phil 		    ni->ni_rates.rs_nrates != 0) {
   2408  1.75.4.1      phil 			IEEE80211_NOTE(vap,
   2409  1.75.4.1      phil 			    IEEE80211_MSG_INACT | IEEE80211_MSG_NODE,
   2410  1.75.4.1      phil 			    ni, "%s",
   2411  1.75.4.1      phil 			    "probe station due to inactivity");
   2412  1.75.4.1      phil 			/*
   2413  1.75.4.1      phil 			 * Grab a reference so the node cannot
   2414  1.75.4.1      phil 			 * be reclaimed before we send the frame.
   2415  1.75.4.1      phil 			 * ieee80211_send_nulldata understands
   2416  1.75.4.1      phil 			 * we've done this and reclaims the
   2417  1.75.4.1      phil 			 * ref for us as needed.
   2418  1.75.4.1      phil 			 */
   2419  1.75.4.1      phil 			/* XXX fix this (not required anymore). */
   2420  1.75.4.1      phil 			ieee80211_ref_node(ni);
   2421  1.75.4.1      phil 			/* XXX useless */
   2422  1.75.4.1      phil 			ieee80211_send_nulldata(ni);
   2423  1.75.4.1      phil 			/* XXX stat? */
   2424  1.75.4.1      phil 			return;
   2425  1.75.4.1      phil 		}
   2426      1.45     skrll 	}
   2427  1.75.4.1      phil 	if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) &&
   2428  1.75.4.1      phil 	    ni->ni_inact <= 0) {
   2429  1.75.4.1      phil 		IEEE80211_NOTE(vap,
   2430  1.75.4.1      phil 		    IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
   2431  1.75.4.1      phil 		    "station timed out due to inactivity "
   2432  1.75.4.1      phil 		    "(refcnt %u)", ieee80211_node_refcnt(ni));
   2433      1.39    dyoung 		/*
   2434  1.75.4.1      phil 		 * Send a deauthenticate frame and drop the station.
   2435  1.75.4.1      phil 		 * This is somewhat complicated due to reference counts
   2436  1.75.4.1      phil 		 * and locking.  At this point a station will typically
   2437  1.75.4.1      phil 		 * have a reference count of 2.  ieee80211_node_leave
   2438  1.75.4.1      phil 		 * will do a "free" of the node which will drop the
   2439  1.75.4.1      phil 		 * reference count.  But in the meantime a reference
   2440  1.75.4.1      phil 		 * wil be held by the deauth frame.  The actual reclaim
   2441  1.75.4.1      phil 		 * of the node will happen either after the tx is
   2442  1.75.4.1      phil 		 * completed or by ieee80211_node_leave.
   2443      1.39    dyoung 		 */
   2444      1.39    dyoung 		if (ni->ni_associd != 0) {
   2445  1.75.4.1      phil 			IEEE80211_SEND_MGMT(ni,
   2446  1.75.4.1      phil 			    IEEE80211_FC0_SUBTYPE_DEAUTH,
   2447  1.75.4.1      phil 			    IEEE80211_REASON_AUTH_EXPIRE);
   2448      1.39    dyoung 		}
   2449  1.75.4.1      phil 		ieee80211_node_leave(ni);
   2450  1.75.4.1      phil 		vap->iv_stats.is_node_timeout++;
   2451       1.1    dyoung 	}
   2452      1.39    dyoung }
   2453      1.39    dyoung 
   2454      1.39    dyoung /*
   2455  1.75.4.1      phil  * Timeout inactive stations and do related housekeeping.
   2456      1.39    dyoung  */
   2457      1.39    dyoung static void
   2458  1.75.4.1      phil ieee80211_timeout_stations(struct ieee80211com *ic)
   2459       1.1    dyoung {
   2460  1.75.4.1      phil 	struct ieee80211_node_table *nt = &ic->ic_sta;
   2461      1.22   mycroft 
   2462  1.75.4.1      phil 	ieee80211_iterate_nodes(nt, timeout_stations, NULL);
   2463       1.1    dyoung }
   2464       1.1    dyoung 
   2465       1.9    dyoung /*
   2466  1.75.4.1      phil  * Aggressively reclaim resources.  This should be used
   2467  1.75.4.1      phil  * only in a critical situation to reclaim mbuf resources.
   2468       1.9    dyoung  */
   2469  1.75.4.1      phil void
   2470  1.75.4.1      phil ieee80211_drain(struct ieee80211com *ic)
   2471       1.1    dyoung {
   2472  1.75.4.1      phil 	struct ieee80211_node_table *nt = &ic->ic_sta;
   2473  1.75.4.1      phil 	struct ieee80211vap *vap;
   2474       1.9    dyoung 	struct ieee80211_node *ni;
   2475      1.66  christos 
   2476      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   2477      1.39    dyoung 	TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
   2478      1.39    dyoung 		/*
   2479      1.42    dyoung 		 * Ignore entries for which have yet to receive an
   2480      1.42    dyoung 		 * authentication frame.  These are transient and
   2481      1.42    dyoung 		 * will be reclaimed when the last reference to them
   2482      1.42    dyoung 		 * goes away (when frame xmits complete).
   2483      1.42    dyoung 		 */
   2484  1.75.4.1      phil 		vap = ni->ni_vap;
   2485  1.75.4.1      phil 		/*
   2486  1.75.4.1      phil 		 * Only process stations when in RUN state.  This
   2487  1.75.4.1      phil 		 * insures, for example, that we don't timeout an
   2488  1.75.4.1      phil 		 * inactive station during CAC.  Note that CSA state
   2489  1.75.4.1      phil 		 * is actually handled in ieee80211_node_timeout as
   2490  1.75.4.1      phil 		 * it applies to more than timeout processing.
   2491  1.75.4.1      phil 		 */
   2492  1.75.4.1      phil 		if (vap->iv_state != IEEE80211_S_RUN)
   2493  1.75.4.1      phil 			continue;
   2494  1.75.4.1      phil 		/* XXX can vap be NULL? */
   2495  1.75.4.1      phil 		if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
   2496  1.75.4.1      phil 		     vap->iv_opmode == IEEE80211_M_STA) &&
   2497      1.45     skrll 		    (ni->ni_flags & IEEE80211_NODE_AREF) == 0)
   2498      1.42    dyoung 			continue;
   2499      1.42    dyoung 		/*
   2500  1.75.4.1      phil 		 * Free fragments.
   2501  1.75.4.1      phil 		 * XXX doesn't belong here, move to node_drain
   2502      1.39    dyoung 		 */
   2503  1.75.4.1      phil 		if (ni->ni_rxfrag[0] != NULL) {
   2504      1.39    dyoung 			m_freem(ni->ni_rxfrag[0]);
   2505      1.39    dyoung 			ni->ni_rxfrag[0] = NULL;
   2506      1.39    dyoung 		}
   2507      1.39    dyoung 		/*
   2508  1.75.4.1      phil 		 * Drain resources held by the station.
   2509      1.39    dyoung 		 */
   2510  1.75.4.1      phil 		ic->ic_node_drain(ni);
   2511       1.1    dyoung 	}
   2512      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   2513       1.1    dyoung }
   2514       1.1    dyoung 
   2515  1.75.4.1      phil /*
   2516  1.75.4.1      phil  * Per-ieee80211com inactivity timer callback.
   2517  1.75.4.1      phil  */
   2518       1.1    dyoung void
   2519  1.75.4.1      phil ieee80211_node_timeout(void *arg)
   2520       1.1    dyoung {
   2521  1.75.4.1      phil 	struct ieee80211com *ic = arg;
   2522      1.39    dyoung 
   2523  1.75.4.1      phil 	/*
   2524  1.75.4.1      phil 	 * Defer timeout processing if a channel switch is pending.
   2525  1.75.4.1      phil 	 * We typically need to be mute so not doing things that
   2526  1.75.4.1      phil 	 * might generate frames is good to handle in one place.
   2527  1.75.4.1      phil 	 * Suppressing the station timeout processing may extend the
   2528  1.75.4.1      phil 	 * lifetime of inactive stations (by not decrementing their
   2529  1.75.4.1      phil 	 * idle counters) but this should be ok unless the CSA is
   2530  1.75.4.1      phil 	 * active for an unusually long time.
   2531  1.75.4.1      phil 	 */
   2532  1.75.4.1      phil 	if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) {
   2533  1.75.4.1      phil 		ieee80211_scan_timeout(ic);
   2534  1.75.4.1      phil 		ieee80211_timeout_stations(ic);
   2535  1.75.4.1      phil 		ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT);
   2536  1.75.4.1      phil 
   2537  1.75.4.1      phil 		IEEE80211_LOCK(ic);
   2538  1.75.4.1      phil 		ieee80211_erp_timeout(ic);
   2539  1.75.4.1      phil 		ieee80211_ht_timeout(ic);
   2540  1.75.4.1      phil 		ieee80211_vht_timeout(ic);
   2541  1.75.4.1      phil 		IEEE80211_UNLOCK(ic);
   2542      1.66  christos 	}
   2543  1.75.4.1      phil 	callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
   2544  1.75.4.1      phil 		ieee80211_node_timeout, ic);
   2545  1.75.4.1      phil }
   2546  1.75.4.1      phil 
   2547  1.75.4.1      phil /*
   2548  1.75.4.1      phil  * The same as ieee80211_iterate_nodes(), but for one vap only.
   2549  1.75.4.1      phil  */
   2550  1.75.4.1      phil int
   2551  1.75.4.1      phil ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt,
   2552  1.75.4.1      phil     struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg)
   2553  1.75.4.1      phil {
   2554  1.75.4.1      phil 	struct ieee80211_node **ni_arr;
   2555  1.75.4.1      phil 	struct ieee80211_node *ni;
   2556  1.75.4.1      phil 	size_t size;
   2557  1.75.4.1      phil 	int count, i;
   2558      1.66  christos 
   2559  1.75.4.1      phil 	/*
   2560  1.75.4.1      phil 	 * Iterate over the node table and save an array of ref'ed nodes.
   2561  1.75.4.1      phil 	 *
   2562  1.75.4.1      phil 	 * This is separated out from calling the actual node function so that
   2563  1.75.4.1      phil 	 * no LORs will occur.
   2564  1.75.4.1      phil 	 */
   2565      1.39    dyoung 	IEEE80211_NODE_LOCK(nt);
   2566  1.75.4.1      phil 	count = nt->nt_count;
   2567  1.75.4.1      phil 	size = count * sizeof(struct ieee80211_node *);
   2568  1.75.4.1      phil 	ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE,
   2569  1.75.4.1      phil 	    IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
   2570  1.75.4.1      phil 	if (ni_arr == NULL) {
   2571  1.75.4.1      phil 		IEEE80211_NODE_UNLOCK(nt);
   2572  1.75.4.1      phil 		return (ENOMEM);
   2573  1.75.4.1      phil 	}
   2574  1.75.4.1      phil 
   2575  1.75.4.1      phil 	i = 0;
   2576      1.39    dyoung 	TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
   2577  1.75.4.1      phil 		if (vap != NULL && ni->ni_vap != vap)
   2578  1.75.4.1      phil 			continue;
   2579  1.75.4.1      phil 		KASSERT(i < count,
   2580  1.75.4.1      phil 		    ("node array overflow (vap %p, i %d, count %d)\n",
   2581  1.75.4.1      phil 		    vap, i, count));
   2582  1.75.4.1      phil 		ni_arr[i] = ieee80211_ref_node(ni);
   2583  1.75.4.1      phil 		i++;
   2584      1.39    dyoung 	}
   2585      1.39    dyoung 	IEEE80211_NODE_UNLOCK(nt);
   2586  1.75.4.1      phil 
   2587  1.75.4.1      phil 	for (i = 0; i < count; i++) {
   2588  1.75.4.1      phil 		if (ni_arr[i] == NULL)	/* end of the list */
   2589  1.75.4.1      phil 			break;
   2590  1.75.4.1      phil 		(*f)(arg, ni_arr[i]);
   2591  1.75.4.1      phil 		/* ieee80211_free_node() locks by itself */
   2592  1.75.4.1      phil 		ieee80211_free_node(ni_arr[i]);
   2593  1.75.4.1      phil 	}
   2594  1.75.4.1      phil 
   2595  1.75.4.1      phil 	IEEE80211_FREE(ni_arr, M_80211_NODE);
   2596  1.75.4.1      phil 
   2597  1.75.4.1      phil 	return (0);
   2598      1.39    dyoung }
   2599      1.39    dyoung 
   2600  1.75.4.1      phil /*
   2601  1.75.4.1      phil  * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes()
   2602  1.75.4.1      phil  * reference in the source.
   2603  1.75.4.1      phil  */
   2604      1.39    dyoung void
   2605  1.75.4.1      phil ieee80211_iterate_nodes(struct ieee80211_node_table *nt,
   2606  1.75.4.1      phil 	ieee80211_iter_func *f, void *arg)
   2607  1.75.4.1      phil {
   2608  1.75.4.1      phil 	/* XXX no way to pass error to the caller. */
   2609  1.75.4.1      phil 	(void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg);
   2610  1.75.4.1      phil }
   2611  1.75.4.1      phil 
   2612  1.75.4.1      phil void
   2613  1.75.4.1      phil ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
   2614      1.39    dyoung {
   2615      1.39    dyoung 	printf("0x%p: mac %s refcnt %d\n", ni,
   2616      1.39    dyoung 		ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
   2617  1.75.4.1      phil 	printf("\tauthmode %u flags 0x%x\n",
   2618  1.75.4.1      phil 		ni->ni_authmode, ni->ni_flags);
   2619      1.39    dyoung 	printf("\tassocid 0x%x txpower %u vlan %u\n",
   2620      1.39    dyoung 		ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
   2621      1.39    dyoung 	printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n",
   2622  1.75.4.1      phil 		ni->ni_txseqs[IEEE80211_NONQOS_TID],
   2623  1.75.4.1      phil 		ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT,
   2624  1.75.4.1      phil 		ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK,
   2625      1.39    dyoung 		ni->ni_rxfragstamp);
   2626  1.75.4.1      phil 	printf("\trssi %d noise %d intval %u capinfo 0x%x\n",
   2627  1.75.4.1      phil 		node_getrssi(ni), ni->ni_noise,
   2628  1.75.4.1      phil 		ni->ni_intval, ni->ni_capinfo);
   2629      1.39    dyoung 	printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n",
   2630      1.39    dyoung 		ether_sprintf(ni->ni_bssid),
   2631      1.39    dyoung 		ni->ni_esslen, ni->ni_essid,
   2632      1.39    dyoung 		ni->ni_chan->ic_freq, ni->ni_chan->ic_flags);
   2633  1.75.4.1      phil 	printf("\tinact %u inact_reload %u txrate %u\n",
   2634  1.75.4.1      phil 		ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate);
   2635  1.75.4.1      phil 	printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n",
   2636  1.75.4.1      phil 		ni->ni_htcap, ni->ni_htparam,
   2637  1.75.4.1      phil 		ni->ni_htctlchan, ni->ni_ht2ndchan);
   2638  1.75.4.1      phil 	printf("\thtopmode %x htstbc %x htchw %u\n",
   2639  1.75.4.1      phil 		ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw);
   2640  1.75.4.1      phil 	printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n",
   2641  1.75.4.1      phil 		ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2,
   2642  1.75.4.1      phil 		(int) ni->ni_vht_basicmcs);
   2643  1.75.4.1      phil 	/* XXX VHT state */
   2644      1.39    dyoung }
   2645      1.39    dyoung 
   2646      1.39    dyoung void
   2647      1.39    dyoung ieee80211_dump_nodes(struct ieee80211_node_table *nt)
   2648      1.39    dyoung {
   2649      1.39    dyoung 	ieee80211_iterate_nodes(nt,
   2650      1.39    dyoung 		(ieee80211_iter_func *) ieee80211_dump_node, nt);
   2651      1.39    dyoung }
   2652      1.39    dyoung 
   2653  1.75.4.1      phil static void
   2654  1.75.4.1      phil ieee80211_notify_erp_locked(struct ieee80211com *ic)
   2655  1.75.4.1      phil {
   2656  1.75.4.1      phil 	struct ieee80211vap *vap;
   2657  1.75.4.1      phil 
   2658  1.75.4.1      phil 	IEEE80211_LOCK_ASSERT(ic);
   2659  1.75.4.1      phil 
   2660  1.75.4.1      phil 	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
   2661  1.75.4.1      phil 		if (vap->iv_opmode == IEEE80211_M_HOSTAP)
   2662  1.75.4.1      phil 			ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP);
   2663  1.75.4.1      phil }
   2664  1.75.4.1      phil 
   2665  1.75.4.1      phil void
   2666  1.75.4.1      phil ieee80211_notify_erp(struct ieee80211com *ic)
   2667  1.75.4.1      phil {
   2668  1.75.4.1      phil 	IEEE80211_LOCK(ic);
   2669  1.75.4.1      phil 	ieee80211_notify_erp_locked(ic);
   2670  1.75.4.1      phil 	IEEE80211_UNLOCK(ic);
   2671  1.75.4.1      phil }
   2672  1.75.4.1      phil 
   2673      1.39    dyoung /*
   2674      1.39    dyoung  * Handle a station joining an 11g network.
   2675      1.39    dyoung  */
   2676      1.39    dyoung static void
   2677  1.75.4.1      phil ieee80211_node_join_11g(struct ieee80211_node *ni)
   2678      1.39    dyoung {
   2679  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   2680  1.75.4.1      phil 
   2681  1.75.4.1      phil 	IEEE80211_LOCK_ASSERT(ic);
   2682       1.1    dyoung 
   2683      1.39    dyoung 	/*
   2684      1.39    dyoung 	 * Station isn't capable of short slot time.  Bump
   2685      1.39    dyoung 	 * the count of long slot time stations and disable
   2686      1.39    dyoung 	 * use of short slot time.  Note that the actual switch
   2687      1.39    dyoung 	 * over to long slot time use may not occur until the
   2688      1.39    dyoung 	 * next beacon transmission (per sec. 7.3.1.4 of 11g).
   2689      1.39    dyoung 	 */
   2690      1.39    dyoung 	if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
   2691      1.39    dyoung 		ic->ic_longslotsta++;
   2692  1.75.4.1      phil 		IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
   2693  1.75.4.1      phil 		    "station needs long slot time, count %d",
   2694  1.75.4.1      phil 		    ic->ic_longslotsta);
   2695      1.39    dyoung 		/* XXX vap's w/ conflicting needs won't work */
   2696  1.75.4.1      phil 		if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
   2697  1.75.4.1      phil 			/*
   2698  1.75.4.1      phil 			 * Don't force slot time when switched to turbo
   2699  1.75.4.1      phil 			 * mode as non-ERP stations won't be present; this
   2700  1.75.4.1      phil 			 * need only be done when on the normal G channel.
   2701  1.75.4.1      phil 			 */
   2702  1.75.4.1      phil 			ieee80211_set_shortslottime(ic, 0);
   2703  1.75.4.1      phil 		}
   2704      1.39    dyoung 	}
   2705      1.39    dyoung 	/*
   2706      1.39    dyoung 	 * If the new station is not an ERP station
   2707      1.39    dyoung 	 * then bump the counter and enable protection
   2708      1.39    dyoung 	 * if configured.
   2709      1.39    dyoung 	 */
   2710  1.75.4.1      phil 	if (!ieee80211_iserp_rateset(&ni->ni_rates)) {
   2711      1.39    dyoung 		ic->ic_nonerpsta++;
   2712  1.75.4.1      phil 		IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
   2713  1.75.4.1      phil 		    "station is !ERP, %d non-ERP stations associated",
   2714  1.75.4.1      phil 		    ic->ic_nonerpsta);
   2715      1.39    dyoung 		/*
   2716      1.39    dyoung 		 * If station does not support short preamble
   2717      1.39    dyoung 		 * then we must enable use of Barker preamble.
   2718      1.39    dyoung 		 */
   2719      1.39    dyoung 		if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
   2720  1.75.4.1      phil 			IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
   2721  1.75.4.1      phil 			    "%s", "station needs long preamble");
   2722      1.39    dyoung 			ic->ic_flags |= IEEE80211_F_USEBARKER;
   2723      1.39    dyoung 			ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
   2724      1.39    dyoung 		}
   2725  1.75.4.1      phil 		/*
   2726  1.75.4.1      phil 		 * If protection is configured and this is the first
   2727  1.75.4.1      phil 		 * indication we should use protection, enable it.
   2728  1.75.4.1      phil 		 */
   2729  1.75.4.1      phil 		if (ic->ic_protmode != IEEE80211_PROT_NONE &&
   2730  1.75.4.1      phil 		    ic->ic_nonerpsta == 1 &&
   2731  1.75.4.1      phil 		    (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
   2732  1.75.4.1      phil 			IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
   2733  1.75.4.1      phil 			    "%s: enable use of protection\n", __func__);
   2734  1.75.4.1      phil 			ic->ic_flags |= IEEE80211_F_USEPROT;
   2735  1.75.4.1      phil 			ieee80211_notify_erp_locked(ic);
   2736  1.75.4.1      phil 		}
   2737  1.75.4.1      phil 	} else
   2738      1.39    dyoung 		ni->ni_flags |= IEEE80211_NODE_ERP;
   2739       1.1    dyoung }
   2740      1.22   mycroft 
   2741      1.22   mycroft void
   2742  1.75.4.1      phil ieee80211_node_join(struct ieee80211_node *ni, int resp)
   2743      1.22   mycroft {
   2744  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   2745  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   2746      1.22   mycroft 	int newassoc;
   2747      1.22   mycroft 
   2748      1.22   mycroft 	if (ni->ni_associd == 0) {
   2749  1.75.4.1      phil 		uint16_t aid;
   2750      1.22   mycroft 
   2751  1.75.4.1      phil 		KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap"));
   2752      1.22   mycroft 		/*
   2753      1.39    dyoung 		 * It would be good to search the bitmap
   2754      1.22   mycroft 		 * more efficiently, but this will do for now.
   2755      1.22   mycroft 		 */
   2756  1.75.4.1      phil 		for (aid = 1; aid < vap->iv_max_aid; aid++) {
   2757  1.75.4.1      phil 			if (!IEEE80211_AID_ISSET(vap, aid))
   2758      1.22   mycroft 				break;
   2759      1.22   mycroft 		}
   2760  1.75.4.1      phil 		if (aid >= vap->iv_max_aid) {
   2761  1.75.4.1      phil 			IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY);
   2762  1.75.4.1      phil 			ieee80211_node_leave(ni);
   2763      1.22   mycroft 			return;
   2764      1.22   mycroft 		}
   2765      1.22   mycroft 		ni->ni_associd = aid | 0xc000;
   2766  1.75.4.1      phil 		ni->ni_jointime = time_uptime;
   2767  1.75.4.1      phil 		IEEE80211_LOCK(ic);
   2768  1.75.4.1      phil 		IEEE80211_AID_SET(vap, ni->ni_associd);
   2769  1.75.4.1      phil 		vap->iv_sta_assoc++;
   2770      1.39    dyoung 		ic->ic_sta_assoc++;
   2771  1.75.4.1      phil 
   2772  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
   2773  1.75.4.1      phil 			ieee80211_ht_node_join(ni);
   2774  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
   2775  1.75.4.1      phil 			ieee80211_vht_node_join(ni);
   2776  1.75.4.1      phil 		if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
   2777  1.75.4.1      phil 		    IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
   2778  1.75.4.1      phil 			ieee80211_node_join_11g(ni);
   2779  1.75.4.1      phil 		IEEE80211_UNLOCK(ic);
   2780  1.75.4.1      phil 
   2781      1.22   mycroft 		newassoc = 1;
   2782      1.22   mycroft 	} else
   2783      1.22   mycroft 		newassoc = 0;
   2784      1.22   mycroft 
   2785  1.75.4.1      phil 	/*
   2786  1.75.4.1      phil 	 * XXX VHT - should log VHT channel width, etc
   2787  1.75.4.1      phil 	 */
   2788  1.75.4.1      phil 	IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
   2789  1.75.4.1      phil 	    "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s",
   2790      1.39    dyoung 	    IEEE80211_NODE_AID(ni),
   2791      1.39    dyoung 	    ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
   2792      1.39    dyoung 	    ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
   2793      1.39    dyoung 	    ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
   2794  1.75.4.1      phil 	    ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
   2795  1.75.4.1      phil 	    /* XXX update for VHT string */
   2796  1.75.4.1      phil 	    ni->ni_flags & IEEE80211_NODE_HT ?
   2797  1.75.4.1      phil 		(ni->ni_chw == 40 ? ", HT40" : ", HT20") : "",
   2798  1.75.4.1      phil 	    ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "",
   2799  1.75.4.1      phil 	    ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" :
   2800  1.75.4.1      phil 	        ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "",
   2801  1.75.4.1      phil 	    ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "",
   2802  1.75.4.1      phil 	    IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
   2803  1.75.4.1      phil 		", fast-frames" : "",
   2804  1.75.4.1      phil 	    IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
   2805  1.75.4.1      phil 		", turbo" : ""
   2806      1.39    dyoung 	);
   2807      1.22   mycroft 
   2808  1.75.4.1      phil 	ieee80211_node_setuptxparms(ni);
   2809  1.75.4.1      phil 	ieee80211_ratectl_node_init(ni);
   2810      1.22   mycroft 	/* give driver a chance to setup state like ni_txrate */
   2811      1.39    dyoung 	if (ic->ic_newassoc != NULL)
   2812      1.45     skrll 		ic->ic_newassoc(ni, newassoc);
   2813  1.75.4.1      phil 	IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
   2814      1.39    dyoung 	/* tell the authenticator about new station */
   2815  1.75.4.1      phil 	if (vap->iv_auth->ia_node_join != NULL)
   2816  1.75.4.1      phil 		vap->iv_auth->ia_node_join(ni);
   2817  1.75.4.1      phil 	ieee80211_notify_node_join(ni,
   2818  1.75.4.1      phil 	    resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
   2819  1.75.4.1      phil }
   2820  1.75.4.1      phil 
   2821  1.75.4.1      phil static void
   2822  1.75.4.1      phil disable_protection(struct ieee80211com *ic)
   2823  1.75.4.1      phil {
   2824  1.75.4.1      phil 	KASSERT(ic->ic_nonerpsta == 0 &&
   2825  1.75.4.1      phil 	    (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0,
   2826  1.75.4.1      phil 	   ("%d non ERP stations, flags 0x%x", ic->ic_nonerpsta,
   2827  1.75.4.1      phil 	   ic->ic_flags_ext));
   2828  1.75.4.1      phil 
   2829  1.75.4.1      phil 	ic->ic_flags &= ~IEEE80211_F_USEPROT;
   2830  1.75.4.1      phil 	/* XXX verify mode? */
   2831  1.75.4.1      phil 	if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
   2832  1.75.4.1      phil 		ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
   2833  1.75.4.1      phil 		ic->ic_flags &= ~IEEE80211_F_USEBARKER;
   2834  1.75.4.1      phil 	}
   2835  1.75.4.1      phil 	ieee80211_notify_erp_locked(ic);
   2836      1.39    dyoung }
   2837      1.39    dyoung 
   2838      1.39    dyoung /*
   2839      1.39    dyoung  * Handle a station leaving an 11g network.
   2840      1.39    dyoung  */
   2841      1.39    dyoung static void
   2842  1.75.4.1      phil ieee80211_node_leave_11g(struct ieee80211_node *ni)
   2843      1.39    dyoung {
   2844  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   2845  1.75.4.1      phil 
   2846  1.75.4.1      phil 	IEEE80211_LOCK_ASSERT(ic);
   2847      1.39    dyoung 
   2848  1.75.4.1      phil 	KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
   2849  1.75.4.1      phil 	     ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq,
   2850  1.75.4.1      phil 	      ic->ic_bsschan->ic_flags));
   2851      1.39    dyoung 
   2852      1.39    dyoung 	/*
   2853      1.39    dyoung 	 * If a long slot station do the slot time bookkeeping.
   2854      1.39    dyoung 	 */
   2855      1.39    dyoung 	if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
   2856  1.75.4.1      phil 		KASSERT(ic->ic_longslotsta > 0,
   2857      1.39    dyoung 		    ("bogus long slot station count %d", ic->ic_longslotsta));
   2858      1.39    dyoung 		ic->ic_longslotsta--;
   2859  1.75.4.1      phil 		IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
   2860  1.75.4.1      phil 		    "long slot time station leaves, count now %d",
   2861  1.75.4.1      phil 		    ic->ic_longslotsta);
   2862      1.39    dyoung 		if (ic->ic_longslotsta == 0) {
   2863      1.39    dyoung 			/*
   2864      1.39    dyoung 			 * Re-enable use of short slot time if supported
   2865      1.39    dyoung 			 * and not operating in IBSS mode (per spec).
   2866      1.39    dyoung 			 */
   2867      1.39    dyoung 			if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
   2868      1.39    dyoung 			    ic->ic_opmode != IEEE80211_M_IBSS) {
   2869  1.75.4.1      phil 				IEEE80211_DPRINTF(ni->ni_vap,
   2870  1.75.4.1      phil 				    IEEE80211_MSG_ASSOC,
   2871      1.39    dyoung 				    "%s: re-enable use of short slot time\n",
   2872      1.39    dyoung 				    __func__);
   2873      1.39    dyoung 				ieee80211_set_shortslottime(ic, 1);
   2874      1.39    dyoung 			}
   2875      1.39    dyoung 		}
   2876      1.39    dyoung 	}
   2877      1.39    dyoung 	/*
   2878      1.39    dyoung 	 * If a non-ERP station do the protection-related bookkeeping.
   2879      1.39    dyoung 	 */
   2880      1.39    dyoung 	if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
   2881  1.75.4.1      phil 		KASSERT(ic->ic_nonerpsta > 0,
   2882      1.39    dyoung 		    ("bogus non-ERP station count %d", ic->ic_nonerpsta));
   2883      1.39    dyoung 		ic->ic_nonerpsta--;
   2884  1.75.4.1      phil 		IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni,
   2885  1.75.4.1      phil 		    "non-ERP station leaves, count now %d%s", ic->ic_nonerpsta,
   2886  1.75.4.1      phil 		    (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) ?
   2887  1.75.4.1      phil 			" (non-ERP sta present)" : "");
   2888  1.75.4.1      phil 		if (ic->ic_nonerpsta == 0 &&
   2889  1.75.4.1      phil 		    (ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) {
   2890  1.75.4.1      phil 			IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC,
   2891      1.39    dyoung 				"%s: disable use of protection\n", __func__);
   2892  1.75.4.1      phil 			disable_protection(ic);
   2893      1.39    dyoung 		}
   2894      1.39    dyoung 	}
   2895      1.22   mycroft }
   2896      1.22   mycroft 
   2897      1.22   mycroft /*
   2898  1.75.4.1      phil  * Time out presence of an overlapping bss with non-ERP
   2899  1.75.4.1      phil  * stations.  When operating in hostap mode we listen for
   2900  1.75.4.1      phil  * beacons from other stations and if we identify a non-ERP
   2901  1.75.4.1      phil  * station is present we enable protection.  To identify
   2902  1.75.4.1      phil  * when all non-ERP stations are gone we time out this
   2903  1.75.4.1      phil  * condition.
   2904  1.75.4.1      phil  */
   2905  1.75.4.1      phil static void
   2906  1.75.4.1      phil ieee80211_erp_timeout(struct ieee80211com *ic)
   2907  1.75.4.1      phil {
   2908  1.75.4.1      phil 
   2909  1.75.4.1      phil 	IEEE80211_LOCK_ASSERT(ic);
   2910  1.75.4.1      phil 
   2911  1.75.4.1      phil 	if ((ic->ic_flags_ext & IEEE80211_FEXT_NONERP_PR) &&
   2912  1.75.4.1      phil 	    ieee80211_time_after(ticks, ic->ic_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) {
   2913  1.75.4.1      phil #if 0
   2914  1.75.4.1      phil 		IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
   2915  1.75.4.1      phil 		    "%s", "age out non-ERP sta present on channel");
   2916  1.75.4.1      phil #endif
   2917  1.75.4.1      phil 		ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
   2918  1.75.4.1      phil 		if (ic->ic_nonerpsta == 0)
   2919  1.75.4.1      phil 			disable_protection(ic);
   2920  1.75.4.1      phil 	}
   2921  1.75.4.1      phil }
   2922  1.75.4.1      phil 
   2923  1.75.4.1      phil /*
   2924      1.26    dyoung  * Handle bookkeeping for station deauthentication/disassociation
   2925      1.26    dyoung  * when operating as an ap.
   2926      1.22   mycroft  */
   2927      1.22   mycroft void
   2928  1.75.4.1      phil ieee80211_node_leave(struct ieee80211_node *ni)
   2929      1.22   mycroft {
   2930  1.75.4.1      phil 	struct ieee80211com *ic = ni->ni_ic;
   2931  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   2932      1.39    dyoung 	struct ieee80211_node_table *nt = ni->ni_table;
   2933      1.39    dyoung 
   2934  1.75.4.1      phil 	IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
   2935  1.75.4.1      phil 	    "station with aid %d leaves", IEEE80211_NODE_AID(ni));
   2936      1.75      maxv 
   2937  1.75.4.1      phil 	KASSERT(vap->iv_opmode != IEEE80211_M_STA,
   2938  1.75.4.1      phil 		("unexpected operating mode %u", vap->iv_opmode));
   2939      1.22   mycroft 	/*
   2940      1.22   mycroft 	 * If node wasn't previously associated all
   2941      1.22   mycroft 	 * we need to do is reclaim the reference.
   2942      1.22   mycroft 	 */
   2943      1.39    dyoung 	/* XXX ibss mode bypasses 11g and notification */
   2944      1.22   mycroft 	if (ni->ni_associd == 0)
   2945      1.39    dyoung 		goto done;
   2946      1.39    dyoung 	/*
   2947      1.39    dyoung 	 * Tell the authenticator the station is leaving.
   2948      1.39    dyoung 	 * Note that we must do this before yanking the
   2949      1.39    dyoung 	 * association id as the authenticator uses the
   2950  1.75.4.1      phil 	 * associd to locate it's state block.
   2951      1.39    dyoung 	 */
   2952  1.75.4.1      phil 	if (vap->iv_auth->ia_node_leave != NULL)
   2953  1.75.4.1      phil 		vap->iv_auth->ia_node_leave(ni);
   2954      1.39    dyoung 
   2955  1.75.4.1      phil 	IEEE80211_LOCK(ic);
   2956  1.75.4.1      phil 	IEEE80211_AID_CLR(vap, ni->ni_associd);
   2957  1.75.4.1      phil 	vap->iv_sta_assoc--;
   2958  1.75.4.1      phil 	ic->ic_sta_assoc--;
   2959      1.75      maxv 
   2960  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan))
   2961  1.75.4.1      phil 		ieee80211_vht_node_leave(ni);
   2962  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan))
   2963  1.75.4.1      phil 		ieee80211_ht_node_leave(ni);
   2964  1.75.4.1      phil 	if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
   2965  1.75.4.1      phil 	    IEEE80211_IS_CHAN_FULL(ic->ic_bsschan))
   2966  1.75.4.1      phil 		ieee80211_node_leave_11g(ni);
   2967  1.75.4.1      phil 	IEEE80211_UNLOCK(ic);
   2968      1.39    dyoung 	/*
   2969      1.39    dyoung 	 * Cleanup station state.  In particular clear various
   2970      1.39    dyoung 	 * state that might otherwise be reused if the node
   2971      1.39    dyoung 	 * is reused before the reference count goes to zero
   2972      1.39    dyoung 	 * (and memory is reclaimed).
   2973      1.39    dyoung 	 */
   2974  1.75.4.1      phil 	ieee80211_sta_leave(ni);
   2975      1.39    dyoung done:
   2976      1.39    dyoung 	/*
   2977      1.39    dyoung 	 * Remove the node from any table it's recorded in and
   2978      1.39    dyoung 	 * drop the caller's reference.  Removal from the table
   2979      1.39    dyoung 	 * is important to insure the node is not reprocessed
   2980      1.39    dyoung 	 * for inactivity.
   2981      1.39    dyoung 	 */
   2982      1.39    dyoung 	if (nt != NULL) {
   2983      1.39    dyoung 		IEEE80211_NODE_LOCK(nt);
   2984      1.39    dyoung 		node_reclaim(nt, ni);
   2985      1.39    dyoung 		IEEE80211_NODE_UNLOCK(nt);
   2986      1.39    dyoung 	} else
   2987      1.39    dyoung 		ieee80211_free_node(ni);
   2988      1.39    dyoung }
   2989      1.39    dyoung 
   2990  1.75.4.1      phil struct rssiinfo {
   2991  1.75.4.1      phil 	int	rssi_samples;
   2992  1.75.4.1      phil 	uint32_t rssi_total;
   2993  1.75.4.1      phil };
   2994  1.75.4.1      phil 
   2995  1.75.4.1      phil static void
   2996  1.75.4.1      phil get_hostap_rssi(void *arg, struct ieee80211_node *ni)
   2997      1.39    dyoung {
   2998  1.75.4.1      phil 	struct rssiinfo *info = arg;
   2999  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   3000  1.75.4.1      phil 	int8_t rssi;
   3001      1.39    dyoung 
   3002  1.75.4.1      phil 	/* only associated stations */
   3003  1.75.4.1      phil 	if (ni->ni_associd == 0)
   3004  1.75.4.1      phil 		return;
   3005  1.75.4.1      phil 	rssi = vap->iv_ic->ic_node_getrssi(ni);
   3006  1.75.4.1      phil 	if (rssi != 0) {
   3007  1.75.4.1      phil 		info->rssi_samples++;
   3008  1.75.4.1      phil 		info->rssi_total += rssi;
   3009      1.39    dyoung 	}
   3010      1.39    dyoung }
   3011      1.39    dyoung 
   3012      1.39    dyoung static void
   3013  1.75.4.1      phil get_adhoc_rssi(void *arg, struct ieee80211_node *ni)
   3014      1.39    dyoung {
   3015  1.75.4.1      phil 	struct rssiinfo *info = arg;
   3016  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   3017  1.75.4.1      phil 	int8_t rssi;
   3018  1.75.4.1      phil 
   3019  1.75.4.1      phil 	/* only neighbors */
   3020  1.75.4.1      phil 	/* XXX check bssid */
   3021  1.75.4.1      phil 	if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
   3022  1.75.4.1      phil 		return;
   3023  1.75.4.1      phil 	rssi = vap->iv_ic->ic_node_getrssi(ni);
   3024  1.75.4.1      phil 	if (rssi != 0) {
   3025  1.75.4.1      phil 		info->rssi_samples++;
   3026  1.75.4.1      phil 		info->rssi_total += rssi;
   3027      1.39    dyoung 	}
   3028      1.39    dyoung }
   3029      1.39    dyoung 
   3030  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   3031      1.39    dyoung static void
   3032  1.75.4.1      phil get_mesh_rssi(void *arg, struct ieee80211_node *ni)
   3033      1.39    dyoung {
   3034  1.75.4.1      phil 	struct rssiinfo *info = arg;
   3035  1.75.4.1      phil 	struct ieee80211vap *vap = ni->ni_vap;
   3036  1.75.4.1      phil 	int8_t rssi;
   3037      1.39    dyoung 
   3038  1.75.4.1      phil 	/* only neighbors that peered successfully */
   3039  1.75.4.1      phil 	if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED)
   3040  1.75.4.1      phil 		return;
   3041  1.75.4.1      phil 	rssi = vap->iv_ic->ic_node_getrssi(ni);
   3042  1.75.4.1      phil 	if (rssi != 0) {
   3043  1.75.4.1      phil 		info->rssi_samples++;
   3044  1.75.4.1      phil 		info->rssi_total += rssi;
   3045  1.75.4.1      phil 	}
   3046      1.39    dyoung }
   3047  1.75.4.1      phil #endif /* IEEE80211_SUPPORT_MESH */
   3048      1.39    dyoung 
   3049  1.75.4.1      phil int8_t
   3050  1.75.4.1      phil ieee80211_getrssi(struct ieee80211vap *vap)
   3051      1.39    dyoung {
   3052  1.75.4.1      phil #define	NZ(x)	((x) == 0 ? 1 : (x))
   3053  1.75.4.1      phil 	struct ieee80211com *ic = vap->iv_ic;
   3054  1.75.4.1      phil 	struct rssiinfo info;
   3055      1.39    dyoung 
   3056  1.75.4.1      phil 	info.rssi_total = 0;
   3057  1.75.4.1      phil 	info.rssi_samples = 0;
   3058  1.75.4.1      phil 	switch (vap->iv_opmode) {
   3059  1.75.4.1      phil 	case IEEE80211_M_IBSS:		/* average of all ibss neighbors */
   3060  1.75.4.1      phil 	case IEEE80211_M_AHDEMO:	/* average of all neighbors */
   3061  1.75.4.1      phil 		ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi,
   3062  1.75.4.1      phil 		    &info);
   3063  1.75.4.1      phil 		break;
   3064  1.75.4.1      phil 	case IEEE80211_M_HOSTAP:	/* average of all associated stations */
   3065  1.75.4.1      phil 		ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi,
   3066  1.75.4.1      phil 		    &info);
   3067  1.75.4.1      phil 		break;
   3068  1.75.4.1      phil #ifdef IEEE80211_SUPPORT_MESH
   3069  1.75.4.1      phil 	case IEEE80211_M_MBSS:		/* average of all mesh neighbors */
   3070  1.75.4.1      phil 		ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi,
   3071  1.75.4.1      phil 		    &info);
   3072  1.75.4.1      phil 		break;
   3073  1.75.4.1      phil #endif
   3074  1.75.4.1      phil 	case IEEE80211_M_MONITOR:	/* XXX */
   3075  1.75.4.1      phil 	case IEEE80211_M_STA:		/* use stats from associated ap */
   3076  1.75.4.1      phil 	default:
   3077  1.75.4.1      phil 		if (vap->iv_bss != NULL)
   3078  1.75.4.1      phil 			info.rssi_total = ic->ic_node_getrssi(vap->iv_bss);
   3079  1.75.4.1      phil 		info.rssi_samples = 1;
   3080  1.75.4.1      phil 		break;
   3081  1.75.4.1      phil 	}
   3082  1.75.4.1      phil 	return info.rssi_total / NZ(info.rssi_samples);
   3083  1.75.4.1      phil #undef NZ
   3084      1.39    dyoung }
   3085      1.39    dyoung 
   3086  1.75.4.1      phil void
   3087  1.75.4.1      phil ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise)
   3088      1.39    dyoung {
   3089      1.39    dyoung 
   3090  1.75.4.1      phil 	if (vap->iv_bss == NULL)		/* NB: shouldn't happen */
   3091  1.75.4.1      phil 		return;
   3092  1.75.4.1      phil 	vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise);
   3093  1.75.4.1      phil 	/* for non-station mode return avg'd rssi accounting */
   3094  1.75.4.1      phil 	if (vap->iv_opmode != IEEE80211_M_STA)
   3095  1.75.4.1      phil 		*rssi = ieee80211_getrssi(vap);
   3096      1.22   mycroft }
   3097