qcacld-3.0: Introduce ini to configure roam RSSI diff for 6 GHz AP

This is applicable only when the roaming happens from 2.4 GHz/5 GHz
to 6 GHz AP.
The value is used to check if the 6 GHz AP to which we are roaming
(from 2.4 GHz/ 5 GHz) is better than current AP in terms of RSSI.
This checking is disabled if the value is set to zero.

Change-Id: I77f1183e1fd704dfa153841e669a20c9e75d0fe7
CRs-Fixed: 3353346

components/target_if/connection_mgr/src/target_if_cm_roam_offload.c

@@ -421,6 +421,39 @@ target_if_cm_roam_full_scan_6ghz_on_disc(struct wlan_objmgr_vdev *vdev,
 	return status;
 }
 
+/**
+ * target_if_cm_roam_rssi_diff_6ghz() - Send the roam RSSI diff value to FW
+ * which is used to decide how better the RSSI of the new/roamable 6GHz AP
+ * should be for roaming.
+ * @vdev: vdev object
+ * @roam_rssi_diff_6ghz: RSSI diff value to be used for roaming to 6 GHz AP
+ *
+ * Return: QDF_STATUS
+ */
+static QDF_STATUS
+target_if_cm_roam_rssi_diff_6ghz(struct wlan_objmgr_vdev *vdev,
+				 uint8_t roam_rssi_diff_6ghz)
+{
+	QDF_STATUS status = QDF_STATUS_E_FAILURE;
+	uint8_t vdev_id;
+	wmi_unified_t wmi_handle;
+
+	wmi_handle = target_if_cm_roam_get_wmi_handle_from_vdev(vdev);
+	if (!wmi_handle)
+		return status;
+
+	vdev_id = wlan_vdev_get_id(vdev);
+	status = target_if_roam_set_param(
+				wmi_handle, vdev_id,
+				WMI_ROAM_PARAM_ROAM_RSSI_BOOST_FOR_6GHZ_CAND_AP,
+				roam_rssi_diff_6ghz);
+
+	if (QDF_IS_STATUS_ERROR(status))
+		target_if_err("Failed to set WMI_ROAM_PARAM_ROAM_RSSI_BOOST_FOR_6GHZ_CAND_AP");
+
+	return status;
+}
+
 static void
 target_if_cm_roam_register_lfr3_ops(struct wlan_cm_roam_tx_ops *tx_ops)
 {
@@ -476,6 +509,13 @@ target_if_cm_roam_full_scan_6ghz_on_disc(struct wlan_objmgr_vdev *vdev,
 {
 	return QDF_STATUS_E_NOSUPPORT;
 }
+
+static QDF_STATUS
+target_if_cm_roam_rssi_diff_6ghz(struct wlan_objmgr_vdev *vdev,
+				 uint8_t roam_rssi_diff_6ghz)
+{
+	return QDF_STATUS_E_NOSUPPORT;
+}
 #endif
 
 /**
@@ -1490,6 +1530,11 @@ target_if_cm_roam_send_start(struct wlan_objmgr_vdev *vdev,
 
 	is_mcc_disallowed = !wlan_cm_same_band_sta_allowed(psoc);
 	target_if_cm_roam_mcc_disallow(vdev, vdev_id, is_mcc_disallowed);
+
+	if (req->wlan_roam_rssi_diff_6ghz)
+		target_if_cm_roam_rssi_diff_6ghz(vdev,
+						 req->wlan_roam_rssi_diff_6ghz);
+
 	/* add other wmi commands */
 end:
 	return status;
@@ -1886,6 +1931,10 @@ target_if_cm_roam_send_update_config(struct wlan_objmgr_vdev *vdev,
 		is_mcc_disallowed = !wlan_cm_same_band_sta_allowed(psoc);
 		target_if_cm_roam_mcc_disallow(vdev, vdev_id,
 					       is_mcc_disallowed);
+
+		if (req->wlan_roam_rssi_diff_6ghz)
+			target_if_cm_roam_rssi_diff_6ghz(
+					vdev, req->wlan_roam_rssi_diff_6ghz);
 	}
 end:
 	return status;