qcacld-3.0: report RSSI at disconnection time in STA mode

qcacld-2.0 to qcacld-3.0 propagation

Save RSSI of current connected AP when disconnection happens.
User space has to use getRSSI private IOCTL to query the RSSI value
after disconnected event.

Change-Id: I51ab69f2b0bda7c6b3a2689297ca56941471b1cc
CRs-Fixed: 910970

5 files changed, 58 insertions, 5 deletions

diff --git a/core/mac/src/pe/include/lim_api.h b/core/mac/src/pe/include/lim_api.h
index 5c42317df51d..c5c350ebef3d 100644
--- a/core/mac/src/pe/include/lim_api.h
+++ b/core/mac/src/pe/include/lim_api.h
@@ -222,6 +222,17 @@ static inline QDF_STATUS pe_roam_synch_callback(tpAniSirGlobal mac_ctx,
 #endif
 
 /**
+ * lim_update_lost_link_info() - update lost link information to SME
+ * @mac: global MAC handle
+ * @session: PE session
+ * @rssi: rssi value from the received frame
+ *
+ * Return: None
+ */
+void lim_update_lost_link_info(tpAniSirGlobal mac, tpPESession session,
+				int32_t rssi);
+
+/**
  * lim_mon_init_session() - create PE session for monitor mode operation
  * @mac_ptr: mac pointer
  * @msg: Pointer to struct sir_create_session type.
diff --git a/core/mac/src/pe/lim/lim_api.c b/core/mac/src/pe/lim/lim_api.c
index e1ee86334f6c..478868ab32b5 100644
--- a/core/mac/src/pe/lim/lim_api.c
+++ b/core/mac/src/pe/lim/lim_api.c
@@ -2179,6 +2179,39 @@ tMgmtFrmDropReason lim_is_pkt_candidate_for_drop(tpAniSirGlobal pMac,
 	return eMGMT_DROP_NO_DROP;
 }
 
+void lim_update_lost_link_info(tpAniSirGlobal mac, tpPESession session,
+				int32_t rssi)
+{
+	struct sir_lost_link_info *lost_link_info;
+	tSirMsgQ mmh_msg;
+
+	if ((NULL == mac) || (NULL == session)) {
+		lim_log(mac, LOGE, FL("parameter NULL"));
+		return;
+	}
+	if (!LIM_IS_STA_ROLE(session)) {
+		lim_log(mac, LOGE, FL("not STA mode, do nothing"));
+		return;
+	}
+
+	lost_link_info = qdf_mem_malloc(sizeof(*lost_link_info));
+	if (NULL == lost_link_info) {
+		lim_log(mac, LOGE, FL("lost_link_info allocation failure"));
+		return;
+	}
+
+	lost_link_info->vdev_id = session->smeSessionId;
+	lost_link_info->rssi = rssi;
+	mmh_msg.type = eWNI_SME_LOST_LINK_INFO_IND;
+	mmh_msg.bodyptr = lost_link_info;
+	mmh_msg.bodyval = 0;
+	lim_log(mac, LOG1,
+		FL("post eWNI_SME_LOST_LINK_INFO_IND, bss_idx %d, rssi %d"),
+		lost_link_info->vdev_id, lost_link_info->rssi);
+
+	lim_sys_process_mmh_msg_api(mac, &mmh_msg, ePROT);
+}
+
 QDF_STATUS pe_acquire_global_lock(tAniSirLim *psPe)
 {
 	QDF_STATUS status = QDF_STATUS_E_INVAL;
diff --git a/core/mac/src/pe/lim/lim_process_deauth_frame.c b/core/mac/src/pe/lim/lim_process_deauth_frame.c
index 6a434856408b..f9a19bb44b31 100644
--- a/core/mac/src/pe/lim/lim_process_deauth_frame.c
+++ b/core/mac/src/pe/lim/lim_process_deauth_frame.c
@@ -81,10 +81,12 @@ lim_process_deauth_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 #ifdef WLAN_FEATURE_11W
 	uint32_t frameLen;
 #endif
+	int32_t frame_rssi;
 
 	pHdr = WMA_GET_RX_MAC_HEADER(pRxPacketInfo);
 
 	pBody = WMA_GET_RX_MPDU_DATA(pRxPacketInfo);
+	frame_rssi = (int32_t)WMA_GET_RX_RSSI_NORMALIZED(pRxPacketInfo);
 
 	if (LIM_IS_STA_ROLE(psessionEntry) &&
 	    ((eLIM_SME_WT_DISASSOC_STATE == psessionEntry->limSmeState) ||
@@ -170,12 +172,12 @@ lim_process_deauth_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 
 	PELOGE(lim_log(pMac, LOGE,
 		       FL("Received Deauth frame for Addr: " MAC_ADDRESS_STR
-			" (mlm state = %s,"
-			" sme state = %d systemrole  = %d) with reason code %d [%s] from "
+			"(mlm state = %s, sme state = %d systemrole = %d "
+			"RSSI = %d) with reason code %d [%s] from "
 			MAC_ADDRESS_STR), MAC_ADDR_ARRAY(pHdr->da),
 			lim_mlm_state_str(psessionEntry->limMlmState),
 			psessionEntry->limSmeState,
-			GET_LIM_SYSTEM_ROLE(psessionEntry),
+			GET_LIM_SYSTEM_ROLE(psessionEntry), frame_rssi,
 			reasonCode, lim_dot11_reason_str(reasonCode),
 			MAC_ADDR_ARRAY(pHdr->sa));
 	       )
@@ -593,6 +595,8 @@ lim_process_deauth_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 	if (LIM_IS_STA_ROLE(psessionEntry))
 		wma_tx_abort(psessionEntry->smeSessionId);
 
+	lim_update_lost_link_info(pMac, psessionEntry, frame_rssi);
+
 	/* / Deauthentication from peer MAC entity */
 	if (LIM_IS_STA_ROLE(psessionEntry))
 		lim_post_sme_message(pMac, LIM_MLM_DEAUTH_IND,
diff --git a/core/mac/src/pe/lim/lim_process_disassoc_frame.c b/core/mac/src/pe/lim/lim_process_disassoc_frame.c
index b90b1ed11cea..ae26794f77f1 100644
--- a/core/mac/src/pe/lim/lim_process_disassoc_frame.c
+++ b/core/mac/src/pe/lim/lim_process_disassoc_frame.c
@@ -81,10 +81,13 @@ lim_process_disassoc_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 #ifdef WLAN_FEATURE_11W
 	uint32_t frameLen;
 #endif
+	int32_t frame_rssi;
 
 	pHdr = WMA_GET_RX_MAC_HEADER(pRxPacketInfo);
 	pBody = WMA_GET_RX_MPDU_DATA(pRxPacketInfo);
 
+	frame_rssi = (int32_t)WMA_GET_RX_RSSI_NORMALIZED(pRxPacketInfo);
+
 	if (lim_is_group_addr(pHdr->sa)) {
 		/* Received Disassoc frame from a BC/MC address */
 		/* Log error and ignore it */
@@ -165,11 +168,11 @@ lim_process_disassoc_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 
 	PELOG2(lim_log(pMac, LOGE,
 		       FL("Received Disassoc frame for Addr: " MAC_ADDRESS_STR
-			  "(mlm state=%s, sme state=%d),"
+			  "(mlm state=%s, sme state=%d RSSI=%d),"
 			  "with reason code %d [%s] from " MAC_ADDRESS_STR),
 		       MAC_ADDR_ARRAY(pHdr->da),
 		       lim_mlm_state_str(psessionEntry->limMlmState),
-		       psessionEntry->limSmeState, reasonCode,
+		       psessionEntry->limSmeState, frame_rssi, reasonCode,
 		       lim_dot11_reason_str(reasonCode), MAC_ADDR_ARRAY(pHdr->sa));
 	       )
 
@@ -368,6 +371,7 @@ lim_process_disassoc_frame(tpAniSirGlobal pMac, uint8_t *pRxPacketInfo,
 		return;
 	}
 
+	lim_update_lost_link_info(pMac, psessionEntry, frame_rssi);
 	lim_post_sme_message(pMac, LIM_MLM_DISASSOC_IND,
 			     (uint32_t *) &mlmDisassocInd);
 
diff --git a/core/mac/src/sys/legacy/src/utils/src/mac_trace.c b/core/mac/src/sys/legacy/src/utils/src/mac_trace.c
index 0845d33f82c9..a7b007895737 100644
--- a/core/mac/src/sys/legacy/src/utils/src/mac_trace.c
+++ b/core/mac/src/sys/legacy/src/utils/src/mac_trace.c
@@ -368,6 +368,7 @@ uint8_t *mac_trace_get_sme_msg_string(uint16_t sme_msg)
 		CASE_RETURN_STRING(eWNI_SME_EXT_CHANGE_CHANNEL);
 		CASE_RETURN_STRING(eWNI_SME_EXT_CHANGE_CHANNEL_IND);
 		CASE_RETURN_STRING(eWNI_SME_REGISTER_P2P_ACK_CB);
+		CASE_RETURN_STRING(eWNI_SME_LOST_LINK_INFO_IND);
 		CASE_RETURN_STRING(eWNI_SME_MSG_TYPES_END);
 	default:
 		return (uint8_t *) "UNKNOWN";