/* * Copyright (c) 2021 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/udp/udp.h> uword unformat_next_node (unformat_input_t *input, va_list *args) { vlib_main_t *vm = va_arg (*args, vlib_main_t *); u32 *node_index = va_arg (*args, u32 *); if (unformat (input, "mpls")) *node_index = vlib_get_node_by_name (vm, (u8 *) "mpls-input")->index; else if (unformat (input, "ip4")) *node_index = vlib_get_node_by_name (vm, (u8 *) "ip4-input")->index; else if (unformat (input, "ip6")) *node_index = vlib_get_node_by_name (vm, (u8 *) "ip6-input")->index; else return 0; return 1; } static clib_error_t * udp_decap_cli (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd_arg) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = NULL; u8 is_add = 1, is_ip4 = 1; int i = 0; u16 port = 0; u32 node_index = ~0; if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "ipv4")) is_ip4 = 1; else if (unformat (line_input, "ipv6")) is_ip4 = 0; else if (unformat (line_input, "%d", &i)) port = i; else if (unformat (line_input, "next-proto %U", unformat_next_node, vm, &node_index)) ; else { error = clib_error_return (0, "parse error: '%U'", format_unformat_error, line_input); goto done; } } if (port == 0) { error = clib_error_return (0, "missing port"); goto done; } if (is_add && node_index == ~0) { error = clib_error_return (0, "missing protocol"); goto done; } if (is_add) udp_register_dst_port (vm, port, node_index, is_ip4); else udp_unregister_dst_port (vm, port, is_ip4); done: unformat_free (line_input); return error; } /*? * Register a port to decapsulate incoming UDP encapsulated packets. * * @cliexpar * @clistart * udp decap add ipv4 1234 next-proto mpls * @cliend * @cliexcmd{udp decap [add|del] [ipv4|ipv6] <dst-port> next-proto <inner-protocol>} ?*/ VLIB_CLI_COMMAND (udp_decap_add_command, static) = { .path = "udp decap", .short_help = "udp decap [add|del] [ipv4|ipv6] <dst-port> next-proto <inner-protocol>", .function = udp_decap_cli, };