qcacld-3.0: Add support for new ini param RoamCommon_MinRoamDelta

Add support for new ini param RoamCommon_MinRoamDelta. This param
is similar to the existing min_roam_score_delta param but units
change

Change-Id: If04ff2344a2651e7d8d71c92f05dfebc229f9fe1
CRs-Fixed: 3015930

components/mlme/core/src/wlan_mlme_main.c

@@ -1992,14 +1992,23 @@ static void mlme_init_power_cfg(struct wlan_objmgr_psoc *psoc,
 static void mlme_init_roam_scoring_cfg(struct wlan_objmgr_psoc *psoc,
 				struct wlan_mlme_roam_scoring_cfg *scoring_cfg)
 {
+	bool val = false;
+
 	scoring_cfg->enable_scoring_for_roam =
 		cfg_get(psoc, CFG_ENABLE_SCORING_FOR_ROAM);
 	scoring_cfg->roam_trigger_bitmap =
 			cfg_get(psoc, CFG_ROAM_SCORE_DELTA_TRIGGER_BITMAP);
 	scoring_cfg->roam_score_delta = cfg_get(psoc, CFG_ROAM_SCORE_DELTA);
 	scoring_cfg->apsd_enabled = (bool)cfg_default(CFG_APSD_ENABLED);
-	scoring_cfg->min_roam_score_delta =
-				cfg_get(psoc, CFG_CAND_MIN_ROAM_SCORE_DELTA);
+
+	ucfg_mlme_get_connection_roaming_ini_present(psoc, &val);
+	if (val) {
+		scoring_cfg->min_roam_score_delta =
+			cfg_get(psoc, CFG_ROAM_COMMON_MIN_ROAM_DELTA) * 100;
+	} else {
+		scoring_cfg->min_roam_score_delta =
+			cfg_get(psoc, CFG_CAND_MIN_ROAM_SCORE_DELTA);
+	}
 }
 
 static void mlme_init_oce_cfg(struct wlan_objmgr_psoc *psoc,

components/mlme/dispatcher/inc/cfg_mlme_roam_scoring.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -129,6 +130,41 @@
 			CFG_VALUE_OR_DEFAULT, \
 			"Diff between connected AP's and candidate AP's roam score")
 
+/*
+ * <ini>
+ * RoamCommon_MinRoamDelta - Difference of roam score values between connected
+ * AP and roam candidate AP.
+ * @Min: 0
+ * @Max: 100
+ * @Default: 15
+ *
+ * This ini is used during CU and low rssi based roam triggers, consider
+ * AP as roam candidate only if its roam score is better than connected
+ * AP score by at least RoamCommon_MinRoamDelta.
+ * If user configured "RoamCommon_Delta" and "RoamCommon_MinRoamDelta" both,
+ * then firmware selects roam candidate AP by considering values of both
+ * INIs.
+ * Example: If DUT is connected with AP1 and roam candidate AP2 has roam
+ * score greater than RoamCommon_Delta and RoamCommon_MinRoamDelta then only
+ * firmware will trigger roaming to AP2.
+ * This value needs to be given in percentage
+ *
+ * Related: RoamCommon_Delta
+ *
+ * Supported Feature: Roaming
+ *
+ * Usage: Internal
+ *
+ * </ini>
+ */
+#define CFG_ROAM_COMMON_MIN_ROAM_DELTA CFG_INI_UINT( \
+			"RoamCommon_MinRoamDelta", \
+			0, \
+			100, \
+			15, \
+			CFG_VALUE_OR_DEFAULT, \
+			"Diff bet connected AP's and candidate AP's roam score")
+
 /*
  * <ini>
  * enable_scoring_for_roam - enable/disable scoring logic in FW for candidate
@@ -319,6 +355,7 @@
 	CFG(CFG_ROAM_SCORE_DELTA_TRIGGER_BITMAP) \
 	CFG(CFG_ROAM_SCORE_DELTA) \
 	CFG(CFG_CAND_MIN_ROAM_SCORE_DELTA) \
+	CFG(CFG_ROAM_COMMON_MIN_ROAM_DELTA) \
 	CFG(CFG_ENABLE_SCORING_FOR_ROAM) \
 	CFG(CFG_APSD_ENABLED) \
 	CFG(CFG_DISCONNECT_ROAM_TRIGGER_MIN_RSSI) \