qcacld-3.0: Add INI to configure min rssi for roamable AP in PER Roam

Add INI "gper_min_rssi_threshold_for_roam" to configure the minimum
RSSI required for AP candidate to roam in PER based roaming.

Change-Id: I5549c44d2dffb20e92923d3b62e08b94b7a87c9d
CRs-Fixed: 2048414

core/hdd/inc/wlan_hdd_cfg.h

@@ -9139,6 +9139,31 @@ enum hdd_wext_control {
 #define CFG_MAX_WOW_FILTERS_MAX                (WOW_MAX_BITMAP_FILTERS)
 #define CFG_MAX_WOW_FILTERS_DEFAULT            (WOW_MAX_BITMAP_FILTERS)
 
+/*
+ * <ini>
+ * gper_min_rssi_threshold_for_roam -  Minimum roamable AP RSSI for
+ * candidate selection for PER based roam
+ * @Min: 0
+ * @Max: 96
+ * @Default: 83
+ *
+ * Minimum roamable AP RSSI for candidate selection for PER based roam
+ *
+ * Related: gper_roam_enabled, gper_roam_high_rate_th, gper_roam_low_rate_th,
+ *          gper_roam_th_percent, gper_roam_rest_time
+ *
+ * Supported Feature: LFR-3.0
+ *
+ * Usage: Internal
+ *
+ * </ini>
+ */
+#define CFG_PER_ROAM_MIN_CANDIDATE_RSSI           "gper_min_rssi_threshold_for_roam"
+#define CFG_PER_ROAM_MIN_CANDIDATE_RSSI_MIN       (0)
+#define CFG_PER_ROAM_MIN_CANDIDATE_RSSI_MAX       (96)
+#define CFG_PER_ROAM_MIN_CANDIDATE_RSSI_DEFAULT   (83)
+
+
 /*
  * <ini>
  * gEnableImps - Enable/Disable IMPS
@@ -10957,6 +10982,7 @@ struct hdd_config {
 	uint32_t per_roam_th_percent;
 	uint32_t per_roam_rest_time;
 	uint32_t per_roam_mon_time;
+	uint32_t min_candidate_rssi;
 	enum active_bpf_mode active_uc_bpf_mode;
 	enum active_bpf_mode active_mc_bc_bpf_mode;
 	bool enable_bcast_probe_rsp;

core/hdd/src/wlan_hdd_cfg.c

@@ -4255,6 +4255,13 @@ struct reg_table_entry g_registry_table[] = {
 		CFG_PER_ROAM_MONITOR_TIME_MIN,
 		CFG_PER_ROAM_MONITOR_TIME_MAX),
 
+	REG_VARIABLE(CFG_PER_ROAM_MIN_CANDIDATE_RSSI, WLAN_PARAM_Integer,
+		struct hdd_config, min_candidate_rssi,
+		VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK_ASSUME_DEFAULT,
+		CFG_PER_ROAM_MIN_CANDIDATE_RSSI_DEFAULT,
+		CFG_PER_ROAM_MIN_CANDIDATE_RSSI_MIN,
+		CFG_PER_ROAM_MIN_CANDIDATE_RSSI_MAX),
+
 	REG_VARIABLE(CFG_ACTIVE_UC_BPF_MODE_NAME, WLAN_PARAM_Integer,
 		struct hdd_config, active_uc_bpf_mode,
 		VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK_ASSUME_DEFAULT,
@@ -5215,7 +5222,9 @@ static void hdd_per_roam_print_ini_config(hdd_context_t *hdd_ctx)
 	hdd_debug("Name = [%s] Value = [%u]",
 		CFG_PER_ROAM_MONITOR_TIME,
 		hdd_ctx->config->per_roam_mon_time);
-
+	hdd_debug("Name = [%s] Value = [%u]",
+		CFG_PER_ROAM_MIN_CANDIDATE_RSSI,
+		hdd_ctx->config->min_candidate_rssi);
 }
 
 /**
@@ -7123,6 +7132,10 @@ static void hdd_update_per_config_to_sme(hdd_context_t *hdd_ctx,
 			hdd_ctx->config->per_roam_mon_time;
 	sme_config->csrConfig.per_roam_config.rx_per_mon_time =
 			hdd_ctx->config->per_roam_mon_time;
+
+	/* Assigning minimum roamable AP RSSI for candidate selection */
+	sme_config->csrConfig.per_roam_config.min_candidate_rssi =
+			hdd_ctx->config->min_candidate_rssi;
 }
 
 /**

core/sme/src/csr/csr_api_roam.c

@@ -2747,6 +2747,8 @@ QDF_STATUS csr_change_default_config_param(tpAniSirGlobal pMac,
 			pParam->per_roam_config.tx_per_mon_time;
 		pMac->roam.configParam.per_roam_config.rx_per_mon_time =
 			pParam->per_roam_config.rx_per_mon_time;
+		pMac->roam.configParam.per_roam_config.min_candidate_rssi =
+			pParam->per_roam_config.min_candidate_rssi;
 
 		pMac->fEnableDebugLog = pParam->fEnableDebugLog;
 
@@ -2975,6 +2977,8 @@ QDF_STATUS csr_get_config_param(tpAniSirGlobal pMac, tCsrConfigParam *pParam)
 			cfg_params->per_roam_config.tx_per_mon_time;
 	pParam->per_roam_config.rx_per_mon_time =
 			cfg_params->per_roam_config.rx_per_mon_time;
+	pParam->per_roam_config.min_candidate_rssi =
+			cfg_params->per_roam_config.min_candidate_rssi;
 
 	pParam->conc_custom_rule1 = cfg_params->conc_custom_rule1;
 	pParam->conc_custom_rule2 = cfg_params->conc_custom_rule2;
@@ -17864,15 +17868,18 @@ csr_create_per_roam_request(tpAniSirGlobal mac_ctx, uint8_t session_id)
 		mac_ctx->roam.configParam.per_roam_config.tx_rate_thresh_percnt;
 	req_buf->per_config.rx_rate_thresh_percnt =
 		mac_ctx->roam.configParam.per_roam_config.rx_rate_thresh_percnt;
+	req_buf->per_config.min_candidate_rssi =
+		mac_ctx->roam.configParam.per_roam_config.min_candidate_rssi;
 
 	QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_DEBUG,
-		"PER based roaming configuaration enable: %d vdev: %d high_rate_thresh: %d low_rate_thresh: %d rate_thresh_percnt: %d per_rest_time: %d monitor_time: %d",
+		"PER based roaming configuaration enable: %d vdev: %d high_rate_thresh: %d low_rate_thresh: %d rate_thresh_percnt: %d per_rest_time: %d monitor_time: %d min cand rssi: %d",
 			  req_buf->per_config.enable, session_id,
 			  req_buf->per_config.tx_high_rate_thresh,
 			  req_buf->per_config.tx_low_rate_thresh,
 			  req_buf->per_config.tx_rate_thresh_percnt,
 			  req_buf->per_config.per_rest_time,
-			  req_buf->per_config.tx_per_mon_time);
+			  req_buf->per_config.tx_per_mon_time,
+			  req_buf->per_config.min_candidate_rssi);
 	return req_buf;
 }