/*- * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _NET80211_IEEE80211_NODE_H_ #define _NET80211_IEEE80211_NODE_H_ #define IEEE80211_PSCAN_WAIT 5 /* passive scan wait */ #define IEEE80211_TRANS_WAIT 5 /* transition wait */ #define IEEE80211_INACT_WAIT 5 /* inactivity timer interval */ #define IEEE80211_INACT_MAX (300/IEEE80211_INACT_WAIT) #define IEEE80211_NODE_HASHSIZE 32 /* simple hash is enough for variation of macaddr */ #define IEEE80211_NODE_HASH(addr) \ (((u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % IEEE80211_NODE_HASHSIZE) #define IEEE80211_RATE_SIZE 8 /* 802.11 standard */ #define IEEE80211_RATE_MAXSIZE 15 /* max rates we'll handle */ struct ieee80211_rateset { u_int8_t rs_nrates; u_int8_t rs_rates[IEEE80211_RATE_MAXSIZE]; }; /* * Node specific information. Note that drivers are expected * to derive from this structure to add device-specific per-node * state. This is done by overriding the ic_node_* methods in * the ieee80211com structure. */ struct ieee80211_node { TAILQ_ENTRY(ieee80211_node) ni_list; LIST_ENTRY(ieee80211_node) ni_hash; u_int ni_refcnt; u_int ni_scangen; /* gen# for timeout scan */ /* hardware */ u_int32_t ni_rstamp; /* recv timestamp */ u_int8_t ni_rssi; /* recv ssi */ /* header */ u_int8_t ni_macaddr[IEEE80211_ADDR_LEN]; u_int8_t ni_bssid[IEEE80211_ADDR_LEN]; /* beacon, probe response */ u_int8_t ni_tstamp[8]; /* from last rcv'd beacon */ u_int16_t ni_intval; /* beacon interval */ u_int16_t ni_capinfo; /* capabilities */ u_int8_t ni_esslen; u_int8_t ni_essid[IEEE80211_NWID_LEN]; struct ieee80211_rateset ni_rates; /* negotiated rate set */ u_int8_t *ni_country; /* country information XXX */ struct ieee80211_channel *ni_chan; u_int16_t ni_fhdwell; /* FH only */ u_int8_t ni_fhindex; /* FH only */ u_int8_t ni_erp; /* 11g only */ #ifdef notyet /* DTIM and contention free period (CFP) */ u_int8_t ni_dtimperiod; u_int8_t ni_cfpperiod; /* # of DTIMs between CFPs */ u_int16_t ni_cfpduremain; /* remaining cfp duration */ u_int16_t ni_cfpmaxduration;/* max CFP duration in TU */ u_int16_t ni_nextdtim; /* time to next DTIM */ u_int16_t ni_timoffset; #endif /* others */ u_int16_t ni_associd; /* assoc response */ u_int16_t ni_txseq; /* seq to be transmitted */ u_int16_t ni_rxseq; /* seq previous received */ int ni_fails; /* failure count to associate */ int ni_inact; /* inactivity mark count */ int ni_txrate; /* index to ni_rates[] */ }; static __inline struct ieee80211_node * ieee80211_ref_node(struct ieee80211_node *ni) { atomic_add_int(&ni->ni_refcnt, 1); return ni; } static __inline void ieee80211_unref_node(struct ieee80211_node **ni) { atomic_subtract_int(&(*ni)->ni_refcnt, 1); *ni = NULL; /* guard against use */ } #define IEEE80211_NODE_LOCK_INIT(_ic, _name) \ mtx_init(&(_ic)->ic_nodelock, _name, "802.11 node table", MTX_DEF) #define IEEE80211_NODE_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_nodelock) #define IEEE80211_NODE_LOCK(_ic) mtx_lock(&(_ic)->ic_nodelock) #define IEEE80211_NODE_UNLOCK(_ic) mtx_unlock(&(_ic)->ic_nodelock) #define IEEE80211_NODE_LOCK_ASSERT(_ic) \ mtx_assert(&(_ic)->ic_nodelock, MA_OWNED) struct ieee80211com; #ifdef MALLOC_DECLARE MALLOC_DECLARE(M_80211_NODE); #endif extern void ieee80211_node_attach(struct ifnet *); extern void ieee80211_node_lateattach(struct ifnet *); extern void ieee80211_node_detach(struct ifnet *); extern void ieee80211_begin_scan(struct ifnet *); extern void ieee80211_next_scan(struct ifnet *); extern void ieee80211_end_scan(struct ifnet *); extern struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *, u_int8_t *); extern struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *, u_int8_t *); extern struct ieee80211_node *ieee80211_find_node(struct ieee80211com *, u_int8_t *); extern struct ieee80211_node *ieee80211_find_txnode(struct ieee80211com *, u_int8_t *); extern struct ieee80211_node * ieee80211_lookup_node(struct ieee80211com *, u_int8_t *macaddr, struct ieee80211_channel *); extern void ieee80211_free_node(struct ieee80211com *, struct ieee80211_node *); extern void ieee80211_free_allnodes(struct ieee80211com *); typedef void ieee80211_iter_func(void *, struct ieee80211_node *); extern void ieee80211_iterate_nodes(struct ieee80211com *ic, ieee80211_iter_func *, void *); extern void ieee80211_timeout_nodes(struct ieee80211com *); extern void ieee80211_create_ibss(struct ieee80211com* , struct ieee80211_channel *); #endif /* _NET80211_IEEE80211_NODE_H_ */