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//------------------------------------------------------------------------------
// <copyright file="ieee80211_node.h" company="Atheros">
// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation;
//
// Software distributed under the License is distributed on an "AS
// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
// implied. See the License for the specific language governing
// rights and limitations under the License.
//
//
//------------------------------------------------------------------------------
//==============================================================================
// Author(s): ="Atheros"
//==============================================================================
#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) if (A_IS_MUTEX_VALID(&(_nt)->nt_nodelock)) { \
A_MUTEX_DELETE(&(_nt)->nt_nodelock); }
#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--) == 1)
#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 */
A_UINT32 nt_nodeAge; /* node aging time */
#ifdef OS_ROAM_MANAGEMENT
A_UINT32 nt_si_gen; /* gen# for scan indication*/
#endif
};
#define WLAN_NODE_INACT_TIMEOUT_MSEC 120000
#endif /* _IEEE80211_NODE_H_ */
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