qcacld-3.0: Cleanup SME_CSA_OFFLOAD_EVENT msg to flush BSSID

With new scan module there is no need for LIM to send msg
eWNI_SME_CSA_OFFLOAD_EVENT to CSR to flush scan cache.
Lim can call the scan flush API directly.

Change-Id: I30390a7a6407ab24089b735f55ded1aa354fc17e
CRs-Fixed: 2417852

core/mac/inc/sir_api.h

@@ -1720,12 +1720,6 @@ typedef struct sSmeMaxAssocInd {
 	struct qdf_mac_addr peer_mac;
 } tSmeMaxAssocInd, *tpSmeMaxAssocInd;
 
-typedef struct sSmeCsaOffloadInd {
-	uint16_t mesgType;      /* eWNI_SME_CSA_OFFLOAD_EVENT */
-	uint16_t mesgLen;
-	struct qdf_mac_addr bssid;      /* BSSID */
-} tSmeCsaOffloadInd, *tpSmeCsaOffloadInd;
-
 #define SIR_MAX_NAME_SIZE 64
 #define SIR_MAX_TEXT_SIZE 32
 

core/mac/inc/wni_api.h

@@ -159,7 +159,6 @@ enum eWniMsgTypes {
 	eWNI_SME_STATS_EXT_EVENT = SIR_SME_MSG_TYPES_BEGIN + 89,
 	eWNI_SME_GET_PEER_INFO_IND = SIR_SME_MSG_TYPES_BEGIN + 90,
 	eWNI_SME_GET_PEER_INFO_EXT_IND = SIR_SME_MSG_TYPES_BEGIN + 91,
-	eWNI_SME_CSA_OFFLOAD_EVENT = SIR_SME_MSG_TYPES_BEGIN + 92,
 	/* indicates Additional IE from hdd to PE */
 	eWNI_SME_UPDATE_ADDITIONAL_IES = SIR_SME_MSG_TYPES_BEGIN + 93,
 	/* To indicate IE modify from hdd to PE */

core/mac/src/pe/lim/lim_send_sme_rsp_messages.c

@@ -1636,10 +1636,8 @@ void lim_handle_csa_offload_msg(struct mac_context *mac_ctx,
 				struct scheduler_msg *msg)
 {
 	struct pe_session *session_entry;
-	struct scheduler_msg mmh_msg = {0};
 	struct csa_offload_params *csa_params =
 				(struct csa_offload_params *) (msg->bodyptr);
-	tpSmeCsaOffloadInd csa_offload_ind;
 	tpDphHashNode sta_ds = NULL;
 	uint8_t session_id;
 	uint16_t aid = 0;
@@ -1656,17 +1654,12 @@ void lim_handle_csa_offload_msg(struct mac_context *mac_ctx,
 		return;
 	}
 
-	csa_offload_ind = qdf_mem_malloc(sizeof(tSmeCsaOffloadInd));
-	if (!csa_offload_ind)
-		goto err;
-
 	session_entry =
 		pe_find_session_by_bssid(mac_ctx,
 			csa_params->bssId, &session_id);
 	if (!session_entry) {
 		pe_err("Session does not exists for %pM",
 				csa_params->bssId);
-		qdf_mem_free(csa_offload_ind);
 		goto err;
 	}
 
@@ -1675,13 +1668,11 @@ void lim_handle_csa_offload_msg(struct mac_context *mac_ctx,
 
 	if (!sta_ds) {
 		pe_err("sta_ds does not exist");
-		qdf_mem_free(csa_offload_ind);
 		goto err;
 	}
 
 	if (!LIM_IS_STA_ROLE(session_entry)) {
 		pe_debug("Invalid role to handle CSA");
-		qdf_mem_free(csa_offload_ind);
 		goto err;
 	}
 	/*
@@ -1856,7 +1847,6 @@ void lim_handle_csa_offload_msg(struct mac_context *mac_ctx,
 		(session_entry->ch_width ==
 		 session_entry->gLimChannelSwitch.ch_width)) {
 		pe_debug("Ignore CSA, no change in ch and bw");
-		qdf_mem_free(csa_offload_ind);
 		goto err;
 	}
 
@@ -1876,22 +1866,13 @@ void lim_handle_csa_offload_msg(struct mac_context *mac_ctx,
 
 	lim_prepare_for11h_channel_switch(mac_ctx, session_entry);
 
-	csa_offload_ind->mesgType = eWNI_SME_CSA_OFFLOAD_EVENT;
-	csa_offload_ind->mesgLen = sizeof(tSmeCsaOffloadInd);
-	qdf_mem_copy(csa_offload_ind->bssid.bytes, session_entry->bssId,
-			QDF_MAC_ADDR_SIZE);
-	mmh_msg.type = eWNI_SME_CSA_OFFLOAD_EVENT;
-	mmh_msg.bodyptr = csa_offload_ind;
-	mmh_msg.bodyval = 0;
-	pe_debug("Sending eWNI_SME_CSA_OFFLOAD_EVENT to SME");
-	MTRACE(mac_trace_msg_tx
-			(mac_ctx, session_entry->peSessionId, mmh_msg.type));
+	lim_flush_bssid(mac_ctx, session_entry->bssId);
+
 #ifdef FEATURE_WLAN_DIAG_SUPPORT
 	lim_diag_event_report(mac_ctx,
 			WLAN_PE_DIAG_SWITCH_CHL_IND_EVENT, session_entry,
 			QDF_STATUS_SUCCESS, QDF_STATUS_SUCCESS);
 #endif
-	lim_sys_process_mmh_msg_api(mac_ctx, &mmh_msg);
 
 err:
 	qdf_mem_free(csa_params);

core/mac/src/pe/lim/lim_utils.c

@@ -67,6 +67,7 @@
 #include "wlan_mlme_main.h"
 #include "qdf_util.h"
 #include "wlan_qct_sys.h"
+#include <wlan_scan_ucfg_api.h>
 
 #define ASCII_SPACE_CHARACTER 0x20
 
@@ -359,8 +360,6 @@ char *lim_msg_str(uint32_t msgType)
 	case eWNI_SME_GET_TSM_STATS_RSP:
 		return "eWNI_SME_GET_TSM_STATS_RSP";
 #endif /* FEATURE_WLAN_ESE */
-	case eWNI_SME_CSA_OFFLOAD_EVENT:
-		return "eWNI_SME_CSA_OFFLOAD_EVENT";
 	case eWNI_SME_SET_HW_MODE_REQ:
 		return "eWNI_SME_SET_HW_MODE_REQ";
 	case eWNI_SME_SET_HW_MODE_RESP:
@@ -8372,3 +8371,36 @@ QDF_STATUS lim_get_capability_info(struct mac_context *mac, uint16_t *pcap,
 
 	return QDF_STATUS_SUCCESS;
 }
+
+void lim_flush_bssid(struct mac_context *mac_ctx, uint8_t *bssid)
+{
+	struct scan_filter *filter;
+	struct wlan_objmgr_pdev *pdev = NULL;
+	QDF_STATUS status;
+
+	if (!bssid)
+		return;
+
+	filter = qdf_mem_malloc(sizeof(*filter));
+	if (!filter)
+		return;
+
+	filter->num_of_bssid = 1;
+	qdf_mem_copy(filter->bssid_list[0].bytes, bssid, QDF_MAC_ADDR_SIZE);
+
+	pdev = wlan_objmgr_get_pdev_by_id(mac_ctx->psoc, 0, WLAN_LEGACY_MAC_ID);
+	if (!pdev) {
+		pe_err("pdev is NULL");
+		qdf_mem_free(filter);
+		return;
+	}
+	status = ucfg_scan_flush_results(pdev, filter);
+
+	wlan_objmgr_pdev_release_ref(pdev, WLAN_LEGACY_MAC_ID);
+
+	if (QDF_IS_STATUS_SUCCESS(status))
+		pe_debug("Removed BSS entry:%pM", bssid);
+
+	if (filter)
+		qdf_mem_free(filter);
+}

core/mac/src/pe/lim/lim_utils.h

@@ -1711,4 +1711,13 @@ int8_t lim_get_regulatory_max_transmit_power(struct mac_context *mac,
 QDF_STATUS lim_get_capability_info(struct mac_context *mac, uint16_t *pCap,
 				   struct pe_session *pe_session);
 
+/**
+ * lim_flush_bssid() - flush bssid from scan cache
+ * @mac_ctx: pointer to mac data
+ * @bssid: bssid to be flushed
+ *
+ * Return: void
+ */
+void lim_flush_bssid(struct mac_context *mac_ctx, uint8_t *bssid);
+
 #endif /* __LIM_UTILS_H */

core/mac/src/sys/legacy/src/utils/src/mac_trace.c

@@ -288,7 +288,6 @@ uint8_t *mac_trace_get_sme_msg_string(uint16_t sme_msg)
 		CASE_RETURN_STRING(eWNI_SME_DFS_BEACON_CHAN_SW_IE_REQ);
 		CASE_RETURN_STRING(eWNI_SME_DFS_CSAIE_TX_COMPLETE_IND);
 		CASE_RETURN_STRING(eWNI_SME_STATS_EXT_EVENT);
-		CASE_RETURN_STRING(eWNI_SME_CSA_OFFLOAD_EVENT);
 		CASE_RETURN_STRING(eWNI_SME_UPDATE_ADDITIONAL_IES);
 		CASE_RETURN_STRING(eWNI_SME_MODIFY_ADDITIONAL_IES);
 #ifdef FEATURE_WLAN_AUTO_SHUTDOWN

core/sme/src/common/sme_api.c

@@ -2115,12 +2115,6 @@ QDF_STATUS sme_process_msg(struct mac_context *mac, struct scheduler_msg *pMsg)
 	case eWNI_SME_FW_STATUS_IND:
 		status = sme_fw_state_resp(mac);
 		break;
-	case eWNI_SME_CSA_OFFLOAD_EVENT:
-		if (pMsg->bodyptr) {
-			csr_scan_flush_bss_entry(mac, pMsg->bodyptr);
-			qdf_mem_free(pMsg->bodyptr);
-		}
-		break;
 	case eWNI_SME_TSF_EVENT:
 		if (mac->sme.get_tsf_cb) {
 			mac->sme.get_tsf_cb(mac->sme.get_tsf_cxt,

core/sme/src/csr/csr_api_scan.c

@@ -3009,13 +3009,6 @@ static inline void csr_flush_bssid(struct mac_context *mac_ctx,
 		qdf_mem_free(filter);
 }
 
-void csr_scan_flush_bss_entry(struct mac_context *mac_ctx,
-			      tpSmeCsaOffloadInd csa_off_ind)
-{
-	csr_flush_bssid(mac_ctx,
-		csa_off_ind->bssid.bytes);
-}
-
 void csr_remove_bssid_from_scan_list(struct mac_context *mac_ctx,
 				     tSirMacAddr bssid)
 {

core/sme/src/csr/csr_inside_api.h

@@ -469,8 +469,6 @@ QDF_STATUS csr_queue_sme_command(struct mac_context *mac, tSmeCmd *pCommand,
 tSmeCmd *csr_get_command_buffer(struct mac_context *mac);
 void csr_release_command(struct mac_context *mac, tSmeCmd *pCommand);
 void csr_release_command_buffer(struct mac_context *mac, tSmeCmd *pCommand);
-void csr_scan_flush_bss_entry(struct mac_context *mac,
-			      tpSmeCsaOffloadInd pCsaOffloadInd);
 
 #ifdef FEATURE_WLAN_WAPI
 bool csr_is_profile_wapi(struct csr_roam_profile *pProfile);