+ * ice_aq_get_vlan_mode - get the VLAN mode of the device
+ * @hw: pointer to the HW structure
+ * @get_params: structure FW fills in based on the current VLAN mode config
+ *
+ * Get VLAN Mode Parameters (0x020D)
+ */
+static enum ice_status
+ice_aq_get_vlan_mode(struct ice_hw *hw,
+ struct ice_aqc_get_vlan_mode *get_params)
+{
+ struct ice_aq_desc desc;
+
+ if (!get_params)
+ return ICE_ERR_PARAM;
+
+ ice_fill_dflt_direct_cmd_desc(&desc,
+ ice_aqc_opc_get_vlan_mode_parameters);
+
+ return ice_aq_send_cmd(hw, &desc, get_params, sizeof(*get_params),
+ NULL);
+}
+
+/**
+ * ice_aq_is_dvm_ena - query FW to check if double VLAN mode is enabled
+ * @hw: pointer to the HW structure
+ *
+ * Returns true if the hardware/firmware is configured in double VLAN mode,
+ * else return false signaling that the hardware/firmware is configured in
+ * single VLAN mode.
+ *
+ * Also, return false if this call fails for any reason (i.e. firmware doesn't
+ * support this AQ call).
+ */
+static bool ice_aq_is_dvm_ena(struct ice_hw *hw)
+{
+ struct ice_aqc_get_vlan_mode get_params = { 0 };
+ enum ice_status status;
+
+ status = ice_aq_get_vlan_mode(hw, &get_params);
+ if (status) {
+ ice_debug(hw, ICE_DBG_AQ, "Failed to get VLAN mode, status %d\n",
+ status);
+ return false;
+ }
+
+ return (get_params.vlan_mode & ICE_AQ_VLAN_MODE_DVM_ENA);
+}
+
+/**
+ * ice_is_dvm_ena - check if double VLAN mode is enabled
+ * @hw: pointer to the HW structure
+ *
+ * The device is configured in single or double VLAN mode on initialization and
+ * this cannot be dynamically changed during runtime. Based on this there is no
+ * need to make an AQ call every time the driver needs to know the VLAN mode.
+ * Instead, use the cached VLAN mode.
+ */
+bool ice_is_dvm_ena(struct ice_hw *hw)
+{
+ return hw->dvm_ena;
+}
+
+/**
+ * ice_cache_vlan_mode - cache VLAN mode after DDP is downloaded
+ * @hw: pointer to the HW structure
+ *
+ * This is only called after downloading the DDP and after the global
+ * configuration lock has been released because all ports on a device need to
+ * cache the VLAN mode.
+ */
+void ice_cache_vlan_mode(struct ice_hw *hw)
+{
+ hw->dvm_ena = ice_aq_is_dvm_ena(hw) ? true : false;
+}
+
+/**
+ * ice_is_dvm_supported - check if Double VLAN Mode is supported