wlan: Retry Auth from host in case ack is not received for the Auth
In few APs with power save feature, if no STA is connected, the AP
does not respond to the Auth from STA, unless Auth is sent near to
the AP's beacon time. With currunt implementation host does not
retry the auth and wait for the auth timeout to happen before
returning connect failure.
With this change Host will retry the Auth frame with interval of
3/5 * beacon interval, if no Ack is received for the frame,
until the auth timeout happens.
This increases the probality for the Auth to be received by AP near
to its beacon and thus initiate the connection.
CRs-Fixed: 816177
Change-Id: I51a6032f910b32eb91d67cb078e6434016ae8650
diff --git a/CORE/MAC/src/pe/lim/limTimerUtils.c b/CORE/MAC/src/pe/lim/limTimerUtils.c
index f0480a9..e4f2c1f 100644
--- a/CORE/MAC/src/pe/lim/limTimerUtils.c
+++ b/CORE/MAC/src/pe/lim/limTimerUtils.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012-2014 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2015 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
@@ -54,6 +54,8 @@
#define LIM_KEEPALIVE_TIMER_MS 3000
// Lim JoinProbeRequest Retry timer default (200)ms
#define LIM_JOIN_PROBE_REQ_TIMER_MS 200
+#define LIM_AUTH_RETRY_TIMER_MS 60
+
//default beacon interval value used in HB timer interval calculation
#define LIM_HB_TIMER_BEACON_INTERVAL 100
@@ -257,7 +259,18 @@
limLog(pMac, LOGP, FL("could not create Periodic Join Probe Request timer"));
goto err_timer;
}
-
+ //Send Auth frame every 60 ms
+ if ((tx_timer_create(&pMac->lim.limTimers.gLimPeriodicAuthRetryTimer,
+ "Periodic AUTH Timer",
+ limTimerHandler, SIR_LIM_AUTH_RETRY_TIMEOUT,
+ SYS_MS_TO_TICKS(LIM_AUTH_RETRY_TIMER_MS), 0,
+ TX_NO_ACTIVATE)) != TX_SUCCESS)
+ {
+ /// Could not create Periodic Join Probe Request timer.
+ // Log error
+ limLog(pMac, LOGP, FL("could not create Periodic AUTH Timer timer"));
+ goto err_timer;
+ }
if (wlan_cfgGetInt(pMac, WNI_CFG_ASSOCIATION_FAILURE_TIMEOUT,
&cfgValue) != eSIR_SUCCESS)
{
@@ -733,6 +746,7 @@
tx_timer_delete(&pMac->lim.limTimers.gLimAssocFailureTimer);
tx_timer_delete(&pMac->lim.limTimers.gLimJoinFailureTimer);
tx_timer_delete(&pMac->lim.limTimers.gLimPeriodicJoinProbeReqTimer);
+ tx_timer_delete(&pMac->lim.limTimers.gLimPeriodicAuthRetryTimer);
tx_timer_delete(&pMac->lim.limTimers.gLimQuietBssTimer);
tx_timer_delete(&pMac->lim.limTimers.gLimQuietTimer);
tx_timer_delete(&pMac->lim.limTimers.gLimChannelSwitchTimer);
@@ -1008,6 +1022,7 @@
limDeactivateAndChangeTimer(tpAniSirGlobal pMac, tANI_U32 timerId)
{
tANI_U32 val=0, val1=0;
+ tpPESession psessionEntry;
MTRACE(macTrace(pMac, TRACE_CODE_TIMER_DEACTIVATE, NO_SESSION, timerId));
@@ -1304,6 +1319,37 @@
break;
+ case eLIM_AUTH_RETRY_TIMER:
+
+ if (tx_timer_deactivate(&pMac->lim.limTimers.gLimPeriodicAuthRetryTimer)
+ != TX_SUCCESS)
+ {
+ // Could not deactivate Auth Retry Timer.
+ limLog(pMac, LOGP,
+ FL("Unable to deactivate Auth Retry timer"));
+ }
+ if ((psessionEntry = peFindSessionBySessionId(pMac,
+ pMac->lim.limTimers.gLimPeriodicAuthRetryTimer.sessionId))
+ == NULL)
+ {
+ limLog(pMac, LOGP,
+ FL("session does not exist for given SessionId : %d"),
+ pMac->lim.limTimers.gLimPeriodicAuthRetryTimer.sessionId);
+ break;
+ }
+ /* 3/5 of the beacon interval*/
+ val = psessionEntry->beaconParams.beaconInterval * 3/5;
+ val = SYS_MS_TO_TICKS(val);
+ if (tx_timer_change(&pMac->lim.limTimers.gLimPeriodicAuthRetryTimer,
+ val, 0) != TX_SUCCESS)
+ {
+ // Could not change Auth Retry timer.
+ // Log error
+ limLog(pMac, LOGP, FL("Unable to change Auth Retry timer"));
+ }
+
+ break;
+
case eLIM_ASSOC_FAIL_TIMER:
if (tx_timer_deactivate(&pMac->lim.limTimers.gLimAssocFailureTimer) !=
TX_SUCCESS)