| //------------------------------------------------------------------------------ |
| // <copyright file="ieee80211_node.h" company="Atheros"> |
| // Copyright (c) 2004-2010 Atheros Corporation. All rights reserved. |
| // |
| // |
| // Permission to use, copy, modify, and/or distribute this software for any |
| // purpose with or without fee is hereby granted, provided that the above |
| // copyright notice and this permission notice appear in all copies. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| // |
| // |
| //------------------------------------------------------------------------------ |
| //============================================================================== |
| // 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_SCAN_REPORT_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_scanReportLock) |
| |
| #define IEEE80211_NODE_LOCK_DESTROY(_nt) if (A_IS_MUTEX_VALID(&(_nt)->nt_nodelock)) { \ |
| A_MUTEX_DELETE(&(_nt)->nt_nodelock); } |
| #define IEEE80211_SCAN_REPORT_LOCK_DESTROY(_nt) if (A_IS_MUTEX_VALID(&(_nt)->nt_scanReportLock)) { \ |
| A_MUTEX_DELETE(&(_nt)->nt_scanReportLock); } |
| |
| #define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) |
| #define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) |
| #define IEEE80211_SCAN_REPORT_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_scanReportLock) |
| #define IEEE80211_SCAN_REPORT_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_scanReportLock) |
| |
| #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_UINT32 nt_nodeAge; /* node aging time */ |
| #ifdef OS_ROAM_MANAGEMENT |
| A_UINT32 nt_si_gen; /* gen# for scan indication*/ |
| #endif |
| A_MUTEX_T nt_scanReportLock; /* to synchronize between scan ioctl and bssinfo event */ |
| }; |
| |
| #define WLAN_NODE_INACT_TIMEOUT_MSEC 120000 |
| #define WLAN_NODE_INACT_CNT 4 |
| |
| #endif /* _IEEE80211_NODE_H_ */ |
