qcacld-3.0: Update lost link rssi for sta big data stats

Currently for big data stats, driver gives rssi from get
station command. As get station command comes every 3 seconds
from user space, this rssi can be 3 seconds old rssi value.
When station gets lost link info as part of bmiss indication
or as part of disconnect from AP,it receives rssi info as well.
Since this is the latest rssi info before disconnection, driver
needs to give this latest rssi instead of the rssi from get
station command.

To address above issue, update rssi in big data stats cache
information from lost link information.

Change-Id: Ifc81541c3ef67bbeb86b4775bbc8f295971777c8
CRs-Fixed: 3166948

core/hdd/src/wlan_hdd_stats.c

@@ -1655,6 +1655,7 @@ void hdd_lost_link_info_cb(hdd_handle_t hdd_handle,
 	struct hdd_context *hdd_ctx = hdd_handle_to_context(hdd_handle);
 	int status;
 	struct hdd_adapter *adapter;
+	struct hdd_station_ctx *sta_ctx;
 
 	status = wlan_hdd_validate_context(hdd_ctx);
 	if (status)
@@ -1673,6 +1674,14 @@ void hdd_lost_link_info_cb(hdd_handle_t hdd_handle,
 
 	adapter->rssi_on_disconnect = lost_link_info->rssi;
 	hdd_debug("rssi on disconnect %d", adapter->rssi_on_disconnect);
+
+	sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
+	if (!sta_ctx) {
+		hdd_err("invalid sta context");
+		return;
+	}
+
+	sta_ctx->cache_conn_info.signal = lost_link_info->rssi;
 }
 
 const struct nla_policy qca_wlan_vendor_ll_set_policy[
@@ -7280,6 +7289,7 @@ static void hdd_lost_link_cp_stats_info_cb(void *stats_ev)
 	struct hdd_adapter *adapter;
 	struct stats_event *ev = stats_ev;
 	uint8_t i;
+	struct hdd_station_ctx *sta_ctx;
 
 	if (wlan_hdd_validate_context(hdd_ctx))
 		return;
@@ -7297,6 +7307,11 @@ static void hdd_lost_link_cp_stats_info_cb(void *stats_ev)
 		hdd_debug("rssi %d for " QDF_MAC_ADDR_FMT,
 			  adapter->rssi_on_disconnect,
 			  QDF_MAC_ADDR_REF(adapter->mac_addr.bytes));
+
+		sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
+		if (sta_ctx)
+			sta_ctx->cache_conn_info.signal =
+					ev->vdev_summary_stats[i].stats.rssi;
 	}
 }