+static clib_error_t *
+tap_offload_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u32 sw_if_index = ~0;
+ vnet_main_t *vnm = vnet_get_main ();
+ int gso_enable = 0, gso_disable = 0;
+ int csum_offload_enable = 0, csum_offload_disable = 0;
+ int rv = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return clib_error_return (0, "Missing <interface>");
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "sw_if_index %d", &sw_if_index))
+ ;
+ else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
+ vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "gso-enable"))
+ gso_enable = 1;
+ else if (unformat (line_input, "gso-disable"))
+ gso_disable = 1;
+ else if (unformat (line_input, "csum-offload-enable"))
+ csum_offload_enable = 1;
+ else if (unformat (line_input, "csum-offload-disable"))
+ csum_offload_disable = 1;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+ unformat_free (line_input);
+
+ if (sw_if_index == ~0)
+ return clib_error_return (0,
+ "please specify interface name or sw_if_index");
+
+ if (gso_enable)
+ rv = tap_gso_enable_disable (vm, sw_if_index, 1);
+ else if (csum_offload_enable)
+ rv = tap_csum_offload_enable_disable (vm, sw_if_index, 1);
+ else if (gso_disable)
+ rv = tap_gso_enable_disable (vm, sw_if_index, 0);
+ else if (csum_offload_disable)
+ rv = tap_csum_offload_enable_disable (vm, sw_if_index, 0);
+
+ if (rv == VNET_API_ERROR_INVALID_SW_IF_INDEX)
+ return clib_error_return (0, "not a tap interface");
+ else if (rv != 0)
+ return clib_error_return (0, "error on configuring GSO on tap interface");
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (tap_offload_command, static) =
+{
+ .path = "set tap offload",
+ .short_help = "set tap offload {<interface> | sw_if_index <sw_idx>}"
+ " <gso-enable | gso-disable | csum-offload-enable | csum-offload-disable>",
+ .function = tap_offload_command_fn,
+};
+/* *INDENT-ON* */
+