1/*- 2 * Copyright (c) 2001 Atsushi Onoe 3 * Copyright (c) 2002-2004 Sam Leffler, Errno Consulting 4 * Copyright (c) 2006 Atheros Communications, Inc. 5 * 6 * Wireless Network driver for Atheros AR6001 7 * All rights reserved. 8 * 9 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 10 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 11 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 12 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 13 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 14 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 15 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 16 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 17 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 18 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 19 * 20 */ 21#ifndef _IEEE80211_NODE_H_ 22#define _IEEE80211_NODE_H_ 23 24/* 25 * Node locking definitions. 26 */ 27#define IEEE80211_NODE_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_nodelock) 28#define IEEE80211_NODE_LOCK_DESTROY(_nt) 29#define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) 30#define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) 31#define IEEE80211_NODE_LOCK_BH(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) 32#define IEEE80211_NODE_UNLOCK_BH(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) 33#define IEEE80211_NODE_LOCK_ASSERT(_nt) 34 35/* 36 * Node reference counting definitions. 37 * 38 * ieee80211_node_initref initialize the reference count to 1 39 * ieee80211_node_incref add a reference 40 * ieee80211_node_decref remove a reference 41 * ieee80211_node_dectestref remove a reference and return 1 if this 42 * is the last reference, otherwise 0 43 * ieee80211_node_refcnt reference count for printing (only) 44 */ 45#define ieee80211_node_initref(_ni) ((_ni)->ni_refcnt = 1) 46#define ieee80211_node_incref(_ni) ((_ni)->ni_refcnt++) 47#define ieee80211_node_decref(_ni) ((_ni)->ni_refcnt--) 48#define ieee80211_node_dectestref(_ni) (((_ni)->ni_refcnt--) == 0) 49#define ieee80211_node_refcnt(_ni) ((_ni)->ni_refcnt) 50 51#define IEEE80211_NODE_HASHSIZE 32 52/* simple hash is enough for variation of macaddr */ 53#define IEEE80211_NODE_HASH(addr) \ 54 (((const A_UINT8 *)(addr))[IEEE80211_ADDR_LEN - 1] % \ 55 IEEE80211_NODE_HASHSIZE) 56 57/* 58 * Table of ieee80211_node instances. Each ieee80211com 59 * has at least one for holding the scan candidates. 60 * When operating as an access point or in ibss mode there 61 * is a second table for associated stations or neighbors. 62 */ 63struct ieee80211_node_table { 64 void *nt_wmip; /* back reference */ 65 A_MUTEX_T nt_nodelock; /* on node table */ 66 struct bss *nt_node_first; /* information of all nodes */ 67 struct bss *nt_node_last; /* information of all nodes */ 68 struct bss *nt_hash[IEEE80211_NODE_HASHSIZE]; 69 const char *nt_name; /* for debugging */ 70 A_UINT32 nt_scangen; /* gen# for timeout scan */ 71 A_TIMER nt_inact_timer; 72 A_UINT8 isTimerArmed; /* is the node timer armed */ 73}; 74 75#define WLAN_NODE_INACT_TIMEOUT_MSEC 10000 76 77#endif /* _IEEE80211_NODE_H_ */ 78