mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-25 15:39:42 +02:00
fb189822fc
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15918 3c298f89-4303-0410-b956-a3cf2f4a3e73
372 lines
9.5 KiB
C
372 lines
9.5 KiB
C
/*-
|
|
* Copyright (c) 2001 Atsushi Onoe
|
|
* Copyright (c) 2002-2004 Sam Leffler, Errno Consulting
|
|
* Copyright (c) 2004-2005 Atheros Communications
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* $Id: //depot/sw/releases/olca2.0-GPL/host/wlan/src/wlan_node.c#1 $
|
|
*/
|
|
/*
|
|
* IEEE 802.11 node handling support.
|
|
*/
|
|
#include <a_config.h>
|
|
#include <athdefs.h>
|
|
#include <a_types.h>
|
|
#include <a_osapi.h>
|
|
#include <a_debug.h>
|
|
#include <ieee80211.h>
|
|
#include <wlan_api.h>
|
|
#include <ieee80211_node.h>
|
|
#include <htc_api.h>
|
|
#include <wmi.h>
|
|
#include <wmi_api.h>
|
|
|
|
static void wlan_node_timeout(A_ATH_TIMER arg);
|
|
static bss_t * _ieee80211_find_node(struct ieee80211_node_table *nt,
|
|
const A_UINT8 *macaddr);
|
|
|
|
bss_t *
|
|
wlan_node_alloc(struct ieee80211_node_table *nt, int wh_size)
|
|
{
|
|
bss_t *ni;
|
|
|
|
ni = A_MALLOC_NOWAIT(sizeof(bss_t));
|
|
|
|
if (ni != NULL) {
|
|
ni->ni_buf = A_MALLOC_NOWAIT(wh_size);
|
|
if (ni->ni_buf == NULL) {
|
|
A_FREE(ni);
|
|
ni = NULL;
|
|
return ni;
|
|
}
|
|
} else {
|
|
return ni;
|
|
}
|
|
|
|
/* Make sure our lists are clean */
|
|
ni->ni_list_next = NULL;
|
|
ni->ni_list_prev = NULL;
|
|
ni->ni_hash_next = NULL;
|
|
ni->ni_hash_prev = NULL;
|
|
|
|
//
|
|
// ni_scangen never initialized before and during suspend/resume of winmobile, customer (LG/SEMCO) identified
|
|
// that some junk has been stored in this, due to this scan list didn't properly updated
|
|
//
|
|
ni->ni_scangen = 0;
|
|
|
|
return ni;
|
|
}
|
|
|
|
void
|
|
wlan_node_free(bss_t *ni)
|
|
{
|
|
if (ni->ni_buf != NULL) {
|
|
A_FREE(ni->ni_buf);
|
|
}
|
|
A_FREE(ni);
|
|
}
|
|
|
|
void
|
|
wlan_setup_node(struct ieee80211_node_table *nt, bss_t *ni,
|
|
const A_UINT8 *macaddr)
|
|
{
|
|
int hash;
|
|
|
|
A_MEMCPY(ni->ni_macaddr, macaddr, IEEE80211_ADDR_LEN);
|
|
hash = IEEE80211_NODE_HASH(macaddr);
|
|
ieee80211_node_initref(ni); /* mark referenced */
|
|
|
|
ni->ni_tstamp = A_GET_MS(WLAN_NODE_INACT_TIMEOUT_MSEC);
|
|
IEEE80211_NODE_LOCK_BH(nt);
|
|
|
|
/* Insert at the end of the node list */
|
|
ni->ni_list_next = NULL;
|
|
ni->ni_list_prev = nt->nt_node_last;
|
|
if(nt->nt_node_last != NULL)
|
|
{
|
|
nt->nt_node_last->ni_list_next = ni;
|
|
}
|
|
nt->nt_node_last = ni;
|
|
if(nt->nt_node_first == NULL)
|
|
{
|
|
nt->nt_node_first = ni;
|
|
}
|
|
|
|
/* Insert into the hash list i.e. the bucket */
|
|
if((ni->ni_hash_next = nt->nt_hash[hash]) != NULL)
|
|
{
|
|
nt->nt_hash[hash]->ni_hash_prev = ni;
|
|
}
|
|
ni->ni_hash_prev = NULL;
|
|
nt->nt_hash[hash] = ni;
|
|
|
|
if (!nt->isTimerArmed) {
|
|
A_TIMEOUT_MS(&nt->nt_inact_timer, WLAN_NODE_INACT_TIMEOUT_MSEC, 0);
|
|
nt->isTimerArmed = TRUE;
|
|
}
|
|
|
|
IEEE80211_NODE_UNLOCK_BH(nt);
|
|
}
|
|
|
|
static bss_t *
|
|
_ieee80211_find_node(struct ieee80211_node_table *nt,
|
|
const A_UINT8 *macaddr)
|
|
{
|
|
bss_t *ni;
|
|
int hash;
|
|
|
|
IEEE80211_NODE_LOCK_ASSERT(nt);
|
|
|
|
hash = IEEE80211_NODE_HASH(macaddr);
|
|
for(ni = nt->nt_hash[hash]; ni; ni = ni->ni_hash_next) {
|
|
if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
|
|
ieee80211_node_incref(ni); /* mark referenced */
|
|
return ni;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
bss_t *
|
|
wlan_find_node(struct ieee80211_node_table *nt, const A_UINT8 *macaddr)
|
|
{
|
|
bss_t *ni;
|
|
|
|
IEEE80211_NODE_LOCK(nt);
|
|
ni = _ieee80211_find_node(nt, macaddr);
|
|
IEEE80211_NODE_UNLOCK(nt);
|
|
return ni;
|
|
}
|
|
|
|
/*
|
|
* Reclaim a node. If this is the last reference count then
|
|
* do the normal free work. Otherwise remove it from the node
|
|
* table and mark it gone by clearing the back-reference.
|
|
*/
|
|
void
|
|
wlan_node_reclaim(struct ieee80211_node_table *nt, bss_t *ni)
|
|
{
|
|
IEEE80211_NODE_LOCK(nt);
|
|
|
|
if(ni->ni_list_prev == NULL)
|
|
{
|
|
/* First in list so fix the list head */
|
|
nt->nt_node_first = ni->ni_list_next;
|
|
}
|
|
else
|
|
{
|
|
ni->ni_list_prev->ni_list_next = ni->ni_list_next;
|
|
}
|
|
|
|
if(ni->ni_list_next == NULL)
|
|
{
|
|
/* Last in list so fix list tail */
|
|
nt->nt_node_last = ni->ni_list_prev;
|
|
}
|
|
else
|
|
{
|
|
ni->ni_list_next->ni_list_prev = ni->ni_list_prev;
|
|
}
|
|
|
|
if(ni->ni_hash_prev == NULL)
|
|
{
|
|
/* First in list so fix the list head */
|
|
int hash;
|
|
hash = IEEE80211_NODE_HASH(ni->ni_macaddr);
|
|
nt->nt_hash[hash] = ni->ni_hash_next;
|
|
}
|
|
else
|
|
{
|
|
ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next;
|
|
}
|
|
|
|
if(ni->ni_hash_next != NULL)
|
|
{
|
|
ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev;
|
|
}
|
|
wlan_node_free(ni);
|
|
|
|
IEEE80211_NODE_UNLOCK(nt);
|
|
}
|
|
|
|
static void
|
|
wlan_node_dec_free(bss_t *ni)
|
|
{
|
|
if (ieee80211_node_dectestref(ni)) {
|
|
wlan_node_free(ni);
|
|
}
|
|
}
|
|
|
|
void
|
|
wlan_free_allnodes(struct ieee80211_node_table *nt)
|
|
{
|
|
bss_t *ni;
|
|
|
|
while ((ni = nt->nt_node_first) != NULL) {
|
|
wlan_node_reclaim(nt, ni);
|
|
}
|
|
}
|
|
|
|
void
|
|
wlan_iterate_nodes(struct ieee80211_node_table *nt, wlan_node_iter_func *f,
|
|
void *arg)
|
|
{
|
|
bss_t *ni;
|
|
A_UINT32 gen;
|
|
|
|
gen = ++nt->nt_scangen;
|
|
|
|
IEEE80211_NODE_LOCK(nt);
|
|
for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) {
|
|
if (ni->ni_scangen != gen) {
|
|
ni->ni_scangen = gen;
|
|
(void) ieee80211_node_incref(ni);
|
|
(*f)(arg, ni);
|
|
wlan_node_dec_free(ni);
|
|
}
|
|
}
|
|
IEEE80211_NODE_UNLOCK(nt);
|
|
}
|
|
|
|
/*
|
|
* Node table support.
|
|
*/
|
|
void
|
|
wlan_node_table_init(void *wmip, struct ieee80211_node_table *nt)
|
|
{
|
|
int i;
|
|
|
|
AR_DEBUG_PRINTF(ATH_DEBUG_WLAN, ("node table = 0x%x\n", (A_UINT32)nt));
|
|
IEEE80211_NODE_LOCK_INIT(nt);
|
|
|
|
nt->nt_node_first = nt->nt_node_last = NULL;
|
|
for(i = 0; i < IEEE80211_NODE_HASHSIZE; i++)
|
|
{
|
|
nt->nt_hash[i] = NULL;
|
|
}
|
|
A_INIT_TIMER(&nt->nt_inact_timer, wlan_node_timeout, nt);
|
|
nt->isTimerArmed = FALSE;
|
|
nt->nt_wmip = wmip;
|
|
}
|
|
|
|
static void
|
|
wlan_node_timeout(A_ATH_TIMER arg)
|
|
{
|
|
struct ieee80211_node_table *nt = (struct ieee80211_node_table *)arg;
|
|
bss_t *bss, *nextBss;
|
|
A_UINT8 myBssid[IEEE80211_ADDR_LEN], reArmTimer = FALSE;
|
|
|
|
wmi_get_current_bssid(nt->nt_wmip, myBssid);
|
|
|
|
bss = nt->nt_node_first;
|
|
while (bss != NULL)
|
|
{
|
|
nextBss = bss->ni_list_next;
|
|
if (A_MEMCMP(myBssid, bss->ni_macaddr, sizeof(myBssid)) != 0)
|
|
{
|
|
|
|
if (bss->ni_tstamp <= A_GET_MS(0))
|
|
{
|
|
/*
|
|
* free up all but the current bss - if set
|
|
*/
|
|
wlan_node_reclaim(nt, bss);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Re-arm timer, only when we have a bss other than
|
|
* current bss AND it is not aged-out.
|
|
*/
|
|
reArmTimer = TRUE;
|
|
}
|
|
}
|
|
bss = nextBss;
|
|
}
|
|
|
|
if(reArmTimer)
|
|
A_TIMEOUT_MS(&nt->nt_inact_timer, WLAN_NODE_INACT_TIMEOUT_MSEC, 0);
|
|
|
|
nt->isTimerArmed = reArmTimer;
|
|
}
|
|
|
|
void
|
|
wlan_node_table_cleanup(struct ieee80211_node_table *nt)
|
|
{
|
|
A_UNTIMEOUT(&nt->nt_inact_timer);
|
|
A_DELETE_TIMER(&nt->nt_inact_timer);
|
|
wlan_free_allnodes(nt);
|
|
IEEE80211_NODE_LOCK_DESTROY(nt);
|
|
}
|
|
|
|
bss_t *
|
|
wlan_find_Ssidnode (struct ieee80211_node_table *nt, A_UCHAR *pSsid,
|
|
A_UINT32 ssidLength, A_BOOL bIsWPA2)
|
|
{
|
|
bss_t *ni = NULL;
|
|
A_UCHAR *pIESsid = NULL;
|
|
|
|
IEEE80211_NODE_LOCK (nt);
|
|
|
|
for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) {
|
|
pIESsid = ni->ni_cie.ie_ssid;
|
|
if (pIESsid[1] <= 32) {
|
|
|
|
// Step 1 : Check SSID
|
|
if (0x00 == memcmp (pSsid, &pIESsid[2], ssidLength)) {
|
|
|
|
// Step 2 : if SSID matches, check WPA or WPA2
|
|
if (TRUE == bIsWPA2 && NULL != ni->ni_cie.ie_rsn) {
|
|
ieee80211_node_incref (ni); /* mark referenced */
|
|
IEEE80211_NODE_UNLOCK (nt);
|
|
return ni;
|
|
}
|
|
if (FALSE == bIsWPA2 && NULL != ni->ni_cie.ie_wpa) {
|
|
ieee80211_node_incref(ni); /* mark referenced */
|
|
IEEE80211_NODE_UNLOCK (nt);
|
|
return ni;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
IEEE80211_NODE_UNLOCK (nt);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
wlan_node_return (struct ieee80211_node_table *nt, bss_t *ni)
|
|
{
|
|
IEEE80211_NODE_LOCK (nt);
|
|
wlan_node_dec_free (ni);
|
|
IEEE80211_NODE_UNLOCK (nt);
|
|
}
|