qcacld-3.0: Send roam band value to userspace

OEM-SS sends ROAMBAND attribute via the vendor command
QCA_WLAN_VENDOR_ROAMING_SUBCMD_CONTROL_SET to host to
get current roam band value in the host.

Fix is to process ROAMBAND attribute and send roam band
value to upper layer.

Change-Id: I56b208d00b40d4d3e6d3658d23fa1073f6fe1146
CRs-Fixed: 3009753

components/umac/mlme/connection_mgr/dispatcher/inc/wlan_cm_roam_ucfg_api.h

@@ -81,6 +81,17 @@ QDF_STATUS ucfg_cm_set_cckm_ie(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
 			       const uint8_t *cck_ie, const uint8_t cck_ie_len);
 #endif
 
+/**
+ * ucfg_cm_get_roam_band() - Get roam band from rso config
+ * @psoc: Pointer to psoc
+ * @vdev_id: vdev id
+ * @roam_band: Pointer of a buffer to fill the roam band
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS ucfg_cm_get_roam_band(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
+				 uint32_t *roam_band);
+
 /**
  * ucfg_cm_rso_set_roam_trigger() - Send roam trigger bitmap firmware
  * @pdev: Pointer to pdev

components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_ucfg_api.c

@@ -139,6 +139,18 @@ release_ref:
 	return status;
 }
 
+QDF_STATUS ucfg_cm_get_roam_band(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
+				 uint32_t *roam_band)
+{
+	struct cm_roam_values_copy temp;
+
+	wlan_cm_roam_cfg_get_value(psoc, vdev_id, ROAM_BAND, &temp);
+
+	*roam_band = temp.uint_value;
+
+	return QDF_STATUS_SUCCESS;
+}
+
 #ifdef FEATURE_WLAN_ESE
 QDF_STATUS ucfg_cm_set_ese_roam_scan_channel_list(struct wlan_objmgr_pdev *pdev,
 						  uint8_t vdev_id,