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/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2004 Sam Leffler, Errno Consulting
* Copyright (c) 2006 Atheros Communications, Inc.
*
* Wireless Network driver for Atheros AR6001
* All rights reserved.
*
* 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.
*
*/
#ifndef _IEEE80211_NODE_H_
#define _IEEE80211_NODE_H_
/*
* Node locking definitions.
*/
#define IEEE80211_NODE_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_LOCK_DESTROY(_nt)
#define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_LOCK_BH(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_UNLOCK_BH(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_LOCK_ASSERT(_nt)
/*
* Node reference counting definitions.
*
* ieee80211_node_initref initialize the reference count to 1
* ieee80211_node_incref add a reference
* ieee80211_node_decref remove a reference
* ieee80211_node_dectestref remove a reference and return 1 if this
* is the last reference, otherwise 0
* ieee80211_node_refcnt reference count for printing (only)
*/
#define ieee80211_node_initref(_ni) ((_ni)->ni_refcnt = 1)
#define ieee80211_node_incref(_ni) ((_ni)->ni_refcnt++)
#define ieee80211_node_decref(_ni) ((_ni)->ni_refcnt--)
#define ieee80211_node_dectestref(_ni) (((_ni)->ni_refcnt--) == 0)
#define ieee80211_node_refcnt(_ni) ((_ni)->ni_refcnt)
#define IEEE80211_NODE_HASHSIZE 32
/* simple hash is enough for variation of macaddr */
#define IEEE80211_NODE_HASH(addr) \
(((const A_UINT8 *)(addr))[IEEE80211_ADDR_LEN - 1] % \
IEEE80211_NODE_HASHSIZE)
/*
* Table of ieee80211_node instances. Each ieee80211com
* has at least one for holding the scan candidates.
* When operating as an access point or in ibss mode there
* is a second table for associated stations or neighbors.
*/
struct ieee80211_node_table {
void *nt_wmip; /* back reference */
A_MUTEX_T nt_nodelock; /* on node table */
struct bss *nt_node_first; /* information of all nodes */
struct bss *nt_node_last; /* information of all nodes */
struct bss *nt_hash[IEEE80211_NODE_HASHSIZE];
const char *nt_name; /* for debugging */
A_UINT32 nt_scangen; /* gen# for timeout scan */
A_TIMER nt_inact_timer;
A_UINT8 isTimerArmed; /* is the node timer armed */
};
#define WLAN_NODE_INACT_TIMEOUT_MSEC 10000
#endif /* _IEEE80211_NODE_H_ */
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