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78 lines
3.3 KiB
C
78 lines
3.3 KiB
C
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/*-
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* Copyright (c) 2001 Atsushi Onoe
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* Copyright (c) 2002-2004 Sam Leffler, Errno Consulting
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* Copyright (c) 2006 Atheros Communications, Inc.
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*
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* Wireless Network driver for Atheros AR6001
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* All rights reserved.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _IEEE80211_NODE_H_
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#define _IEEE80211_NODE_H_
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/*
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* Node locking definitions.
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*/
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#define IEEE80211_NODE_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_LOCK_DESTROY(_nt)
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#define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_LOCK_BH(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_UNLOCK_BH(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_LOCK_ASSERT(_nt)
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/*
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* Node reference counting definitions.
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*
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* ieee80211_node_initref initialize the reference count to 1
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* ieee80211_node_incref add a reference
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* ieee80211_node_decref remove a reference
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* ieee80211_node_dectestref remove a reference and return 1 if this
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* is the last reference, otherwise 0
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* ieee80211_node_refcnt reference count for printing (only)
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*/
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#define ieee80211_node_initref(_ni) ((_ni)->ni_refcnt = 1)
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#define ieee80211_node_incref(_ni) ((_ni)->ni_refcnt++)
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#define ieee80211_node_decref(_ni) ((_ni)->ni_refcnt--)
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#define ieee80211_node_dectestref(_ni) (((_ni)->ni_refcnt--) == 0)
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#define ieee80211_node_refcnt(_ni) ((_ni)->ni_refcnt)
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#define IEEE80211_NODE_HASHSIZE 32
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/* simple hash is enough for variation of macaddr */
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#define IEEE80211_NODE_HASH(addr) \
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(((const A_UINT8 *)(addr))[IEEE80211_ADDR_LEN - 1] % \
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IEEE80211_NODE_HASHSIZE)
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/*
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* Table of ieee80211_node instances. Each ieee80211com
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* has at least one for holding the scan candidates.
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* When operating as an access point or in ibss mode there
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* is a second table for associated stations or neighbors.
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*/
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struct ieee80211_node_table {
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void *nt_wmip; /* back reference */
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A_MUTEX_T nt_nodelock; /* on node table */
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struct bss *nt_node_first; /* information of all nodes */
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struct bss *nt_node_last; /* information of all nodes */
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struct bss *nt_hash[IEEE80211_NODE_HASHSIZE];
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const char *nt_name; /* for debugging */
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A_UINT32 nt_scangen; /* gen# for timeout scan */
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A_TIMER nt_inact_timer;
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A_UINT8 isTimerArmed; /* is the node timer armed */
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};
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#define WLAN_NODE_INACT_TIMEOUT_MSEC 10000
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#endif /* _IEEE80211_NODE_H_ */
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