wlan: enhance the low resource detection mechanism
DXE driver should not issue SSR immediately if there
are some VOSS packets which can be replenished. When
the low resource timer expires we will try to replenish
the VOSS packets, if this operation fails only then
we will issue SSR.
This change also adds a counter to check the number of
times VOSS packets' replenish operation failed to help
debugging device crashes due to low resource.
Change-Id: Ie40671045eee480e52ef508483cd9a3aadec4eb0
CRs-Fixed: 685402
diff --git a/CORE/DXE/src/wlan_qct_dxe.c b/CORE/DXE/src/wlan_qct_dxe.c
index 0219cba..ebbdb19 100644
--- a/CORE/DXE/src/wlan_qct_dxe.c
+++ b/CORE/DXE/src/wlan_qct_dxe.c
@@ -1973,6 +1973,7 @@
)
{
WLANDXE_CtrlBlkType *dxeCtxt = NULL;
+ wpt_uint32 numRxFreePackets;
dxeCtxt = (WLANDXE_CtrlBlkType *)usrData;
@@ -1980,7 +1981,30 @@
"RX Low resource, Durign wait time period %d, RX resource not allocated",
T_WLANDXE_MAX_RX_PACKET_WAIT);
- if(0 != dxeCtxt)
+ //This API wil also try to replenish packets
+ wpalGetNumRxFreePacket(&numRxFreePackets);
+
+ if (numRxFreePackets > 0)
+ {
+ /* If no. of free packets is greater than 0, it means
+ * that some packets were replenished and can be used
+ * by DXE to receive frames. So try to restart the
+ * resourceAvailable timer here, it will be stopped
+ * by the DXE's low resource callback if atleast one
+ * free packet reaches DXE.
+ */
+ if (NULL != dxeCtxt)
+ {
+ HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_FATAL,
+ "%s: Replenish successful. Restart the Rx Low resource timer",
+ __func__);
+ wpalTimerStart(&dxeCtxt->rxResourceAvailableTimer,
+ T_WLANDXE_MAX_RX_PACKET_WAIT);
+ return;
+ }
+ }
+
+ if (NULL != dxeCtxt)
dxeCtxt->driverReloadInProcessing = eWLAN_PAL_TRUE;
wpalWlanReload();