2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2 as published by the Free
19 * Software Foundation.
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/net80211/ieee80211_node.h,v 1.10 2004/04/05 22:10:26 sam Exp $
33 * $DragonFly: src/sys/netproto/802_11/wlan/Attic/ieee80211_node.h,v 1.1 2004/07/26 16:30:17 joerg Exp $
36 #ifndef _NETPROTO_802_11_IEEE80211_NODE_H_
37 #define _NETPROTO_802_11_IEEE80211_NODE_H_
39 #define IEEE80211_PSCAN_WAIT 5 /* passive scan wait */
40 #define IEEE80211_TRANS_WAIT 5 /* transition wait */
41 #define IEEE80211_INACT_WAIT 5 /* inactivity timer interval */
42 #define IEEE80211_INACT_MAX (300/IEEE80211_INACT_WAIT)
44 #define IEEE80211_NODE_HASHSIZE 32
45 /* simple hash is enough for variation of macaddr */
46 #define IEEE80211_NODE_HASH(addr) \
47 (((uint8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % IEEE80211_NODE_HASHSIZE)
49 #define IEEE80211_RATE_SIZE 8 /* 802.11 standard */
50 #define IEEE80211_RATE_MAXSIZE 15 /* max rates we'll handle */
52 struct ieee80211_rateset {
54 uint8_t rs_rates[IEEE80211_RATE_MAXSIZE];
58 * Node specific information. Note that drivers are expected
59 * to derive from this structure to add device-specific per-node
60 * state. This is done by overriding the ic_node_* methods in
61 * the ieee80211com structure.
63 struct ieee80211_node {
64 TAILQ_ENTRY(ieee80211_node) ni_list;
65 LIST_ENTRY(ieee80211_node) ni_hash;
67 u_int ni_scangen; /* gen# for timeout scan */
70 uint32_t ni_rstamp; /* recv timestamp */
71 uint8_t ni_rssi; /* recv ssi */
74 uint8_t ni_macaddr[IEEE80211_ADDR_LEN];
75 uint8_t ni_bssid[IEEE80211_ADDR_LEN];
77 /* beacon, probe response */
78 uint8_t ni_tstamp[8]; /* from last rcv'd beacon */
79 uint16_t ni_intval; /* beacon interval */
80 uint16_t ni_capinfo; /* capabilities */
82 uint8_t ni_essid[IEEE80211_NWID_LEN];
83 struct ieee80211_rateset ni_rates; /* negotiated rate set */
84 uint8_t *ni_country; /* country information XXX */
85 struct ieee80211_channel *ni_chan;
86 uint16_t ni_fhdwell; /* FH only */
87 uint8_t ni_fhindex; /* FH only */
88 uint8_t ni_erp; /* 11g only */
91 /* DTIM and contention free period (CFP) */
92 uint8_t ni_dtimperiod;
93 uint8_t ni_cfpperiod; /* # of DTIMs between CFPs */
94 uint16_t ni_cfpduremain; /* remaining cfp duration */
95 uint16_t ni_cfpmaxduration;/* max CFP duration in TU */
96 uint16_t ni_nextdtim; /* time to next DTIM */
97 uint16_t ni_timoffset;
101 uint16_t ni_associd; /* assoc response */
102 uint16_t ni_txseq; /* seq to be transmitted */
103 uint16_t ni_rxseq; /* seq previous received */
104 int ni_fails; /* failure count to associate */
105 int ni_inact; /* inactivity mark count */
106 int ni_txrate; /* index to ni_rates[] */
109 static __inline struct ieee80211_node *
110 ieee80211_ref_node(struct ieee80211_node *ni)
112 atomic_add_int(&ni->ni_refcnt, 1);
117 ieee80211_unref_node(struct ieee80211_node **ni)
119 atomic_subtract_int(&(*ni)->ni_refcnt, 1);
120 *ni = NULL; /* guard against use */
125 #ifdef MALLOC_DECLARE
126 MALLOC_DECLARE(M_80211_NODE);
129 extern void ieee80211_node_attach(struct ifnet *);
130 extern void ieee80211_node_lateattach(struct ifnet *);
131 extern void ieee80211_node_detach(struct ifnet *);
133 extern void ieee80211_begin_scan(struct ifnet *);
134 extern void ieee80211_next_scan(struct ifnet *);
135 extern void ieee80211_end_scan(struct ifnet *);
136 extern struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *,
138 extern struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *,
140 extern struct ieee80211_node *ieee80211_find_node(struct ieee80211com *,
142 extern struct ieee80211_node *ieee80211_find_txnode(struct ieee80211com *,
144 extern struct ieee80211_node * ieee80211_lookup_node(struct ieee80211com *,
145 uint8_t *macaddr, struct ieee80211_channel *);
146 extern void ieee80211_free_node(struct ieee80211com *,
147 struct ieee80211_node *);
148 extern void ieee80211_free_allnodes(struct ieee80211com *);
149 typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
150 extern void ieee80211_iterate_nodes(struct ieee80211com *ic,
151 ieee80211_iter_func *, void *);
152 extern void ieee80211_timeout_nodes(struct ieee80211com *);
154 extern void ieee80211_create_ibss(struct ieee80211com* ,
155 struct ieee80211_channel *);
156 #endif /* _NETPROTO_802_11_IEEE80211_NODE_H_ */