qcacld-3.0: Fix to have single PMK cache entry in FT roam

In FT roam when the CSR lookup fails then the PMK details from
the roam sync indication will be updated to Session/PMK cache.
This will result in having multiple PMK cache entries for the
same MDID.
This fix is to avoid updating the Session/PMK cache in case of
FT roam and maintain a Single PMK cache that was set during the
set_pmksa.

Change-Id: Ie803a9816dece79c6d71e9963e11c6ec424306eb
CRs-Fixed: 2798720

core/sme/src/csr/csr_api_roam.c

@@ -22962,6 +22962,8 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
 	wlan_scan_id scan_id;
 	struct wlan_crypto_pmksa *pmksa;
 	uint8_t ssid_offset;
+	enum csr_akm_type akm_type;
+	uint8_t mdie_present;
 
 	vdev = wlan_objmgr_get_vdev_by_id_from_psoc(mac_ctx->psoc, session_id,
 						    WLAN_LEGACY_SME_ID);
@@ -23282,6 +23284,9 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
 		sme_debug("Trying to find PMKID for " QDF_MAC_ADDR_FMT " AKM Type:%d",
 			  QDF_MAC_ADDR_REF(pmkid_cache->BSSID.bytes),
 			  session->pCurRoamProfile->negotiatedAuthType);
+		akm_type = session->connectedProfile.AuthType;
+		mdie_present = session->connectedProfile.mdid.mdie_present;
+
 		if (csr_lookup_pmkid_using_bssid(mac_ctx, session,
 						 pmkid_cache)) {
 			session->pmk_len = pmkid_cache->pmk_len;
@@ -23295,7 +23300,17 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
 		} else {
 			sme_debug("PMKID Not found in cache for " QDF_MAC_ADDR_FMT,
 				  QDF_MAC_ADDR_REF(pmkid_cache->BSSID.bytes));
-			if (roam_synch_data->pmk_len) {
+			/*
+			 * In FT roam when the CSR lookup fails then the PMK
+			 * details from the roam sync indication will be
+			 * updated to Session/PMK cache. This will result in
+			 * having multiple PMK cache entries for the same MDID,
+			 * So do not add the PMKSA cache entry in all the
+			 * FT-Roam cases.
+			 */
+			if (!csr_is_auth_type11r(mac_ctx, akm_type,
+						 mdie_present) &&
+			    roam_synch_data->pmk_len) {
 				pmksa = qdf_mem_malloc(sizeof(*pmksa));
 				if (!pmksa) {
 					status = QDF_STATUS_E_NOMEM;