wlan: Reset Rx last SSN after clear filter
Currently, when MSDU reorder info exists for a tid of station, then
after clear filter host last Rx packet sequence number SSN goes out
of sync with the hardware. Reason is in the period between set and
clear filter packets coming to device will be dropped at the firmware
because of the filter applied and host still has the last SSN before
set filter. Also RX packet's SSN will wrap around and start from zero
if SSN crosses 4096 in the period between set and clear filters.
After clear filter because of above reasons RX packet SSN in issue case
will be less than the host last RX SSN and when the difference is more
than threshold which in this case is 3000 packet gets dropped.
In this change reset the last Rx SSN to zero for the station's tid
MSDU reorder info if exists.
Change-Id: I30fb1a27efea2e57a229f674e0c2d80805847de5
CRs-Fixed: 1084362
diff --git a/CORE/HDD/src/wlan_hdd_wext.c b/CORE/HDD/src/wlan_hdd_wext.c
index 9d126de..5c161ba 100644
--- a/CORE/HDD/src/wlan_hdd_wext.c
+++ b/CORE/HDD/src/wlan_hdd_wext.c
@@ -8977,7 +8977,6 @@
{
struct statsContext *cbCtx = (struct statsContext *)data;
-
hddLog(VOS_TRACE_LEVEL_INFO,
FL("Pkt Filter Clear Status : %d"), status);
@@ -9007,6 +9006,7 @@
int wlan_hdd_set_filter(hdd_adapter_t *pAdapter, tpPacketFilterCfg pRequest)
{
hdd_context_t *pHddCtx = WLAN_HDD_GET_CTX(pAdapter);
+ hdd_station_ctx_t *pHddStaCtx = &pAdapter->sessionCtx.station;
tSirRcvPktFilterCfgType packetFilterSetReq = {0};
tSirRcvFltPktClearParam packetFilterClrReq = {0};
struct statsContext cbCtx;
@@ -9096,6 +9096,12 @@
hddLog(VOS_TRACE_LEVEL_INFO_HIGH, "%s: Clear Packet Filter Request for Id: %d",
__func__, pRequest->filterId);
+ if ((WLAN_HDD_INFRA_STATION == pAdapter->device_mode) ||
+ (WLAN_HDD_P2P_CLIENT == pAdapter->device_mode)) {
+ WLANTL_ResetRxSSN((WLAN_HDD_GET_CTX(pAdapter))->pvosContext,
+ pHddStaCtx->conn_info.staId[0]);
+ }
+
init_completion(&cbCtx.completion);
cbCtx.magic = CLEAR_FILTER_MAGIC;
cbCtx.pAdapter = pAdapter;
diff --git a/CORE/TL/inc/wlan_qct_tl.h b/CORE/TL/inc/wlan_qct_tl.h
index b309a1b..9f200b5 100644
--- a/CORE/TL/inc/wlan_qct_tl.h
+++ b/CORE/TL/inc/wlan_qct_tl.h
@@ -3352,4 +3352,16 @@
);
#endif /* WLAN_FEATURE_RMC */
+/*
+ * WLANTL_ResetRxSSN - reset last rx ssn
+ * @pvosGCtx: global vos context
+ * @ucSTAId: station id
+ *
+ * This function resets the last ssn of all tids of the station
+ * for whom BA reorder session exists.
+ *
+ * Return: none
+ */
+void WLANTL_ResetRxSSN(v_PVOID_t pvosGCtx, uint8_t ucSTAId);
+
#endif /* #ifndef WLAN_QCT_WLANTL_H */
diff --git a/CORE/TL/src/wlan_qct_tl.c b/CORE/TL/src/wlan_qct_tl.c
index 7902ac7..5ef562b 100644
--- a/CORE/TL/src/wlan_qct_tl.c
+++ b/CORE/TL/src/wlan_qct_tl.c
@@ -13775,6 +13775,46 @@
return VOS_STATUS_SUCCESS;
}/* WLANTL_GetSTALinkCapacity */
+/*
+ * WLANTL_ResetRxSSN - reset last rx ssn
+ * @pvosGCtx: global vos context
+ * @ucSTAId: station id
+ *
+ * This function resets the last ssn of all tids of the station
+ * for whom BA reorder session exists.
+ *
+ * Return: none
+ */
+void WLANTL_ResetRxSSN(v_PVOID_t pvosGCtx, uint8_t ucSTAId)
+{
+ WLANTL_CbType* pTLCb = NULL;
+ WLANTL_STAClientType* pClientSTA = NULL;
+ uint8_t i;
+
+ if (WLANTL_STA_ID_INVALID(ucSTAId)) {
+ TLLOGE(VOS_TRACE( VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_ERROR,
+ "WLAN TL:Invalid station id requested WLANTL_ResetRxSSN"));
+ return;
+ }
+
+ pTLCb = VOS_GET_TL_CB(pvosGCtx);
+ if (NULL == pTLCb) {
+ TLLOGE(VOS_TRACE( VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_ERROR,
+ "WLAN TL:Invalid TL pointer from pvosGCtx WLANTL_ResetRxSSN"));
+ return;
+ }
+
+ pClientSTA = pTLCb->atlSTAClients[ucSTAId];
+
+ for (i = 0; i < WLAN_MAX_TID ; i++) {
+ if (0 == pClientSTA->atlBAReorderInfo[i].ucExists) {
+ continue;
+ }
+ TLLOG1(VOS_TRACE(VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_INFO,
+ "WLAN TL: Last RxSSN reset to zero for tid %d", i));
+ pClientSTA->atlBAReorderInfo[i].LastSN = 0;
+ }
+}
#ifdef WLAN_FEATURE_RMC
VOS_STATUS WLANTL_RmcInit