| Arthur de Kerhor | 8a6f5d3 | 2021-05-20 11:48:00 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | |
| 16 | #include <vnet/udp/udp.h> |
| 17 | |
| 18 | uword |
| 19 | unformat_next_node (unformat_input_t *input, va_list *args) |
| 20 | { |
| 21 | vlib_main_t *vm = va_arg (*args, vlib_main_t *); |
| 22 | u32 *node_index = va_arg (*args, u32 *); |
| 23 | if (unformat (input, "mpls")) |
| 24 | *node_index = vlib_get_node_by_name (vm, (u8 *) "mpls-input")->index; |
| 25 | else if (unformat (input, "ip4")) |
| 26 | *node_index = vlib_get_node_by_name (vm, (u8 *) "ip4-input")->index; |
| 27 | else if (unformat (input, "ip6")) |
| 28 | *node_index = vlib_get_node_by_name (vm, (u8 *) "ip6-input")->index; |
| 29 | else |
| 30 | return 0; |
| 31 | return 1; |
| 32 | } |
| 33 | |
| 34 | static clib_error_t * |
| 35 | udp_decap_cli (vlib_main_t *vm, unformat_input_t *input, |
| 36 | vlib_cli_command_t *cmd_arg) |
| 37 | { |
| 38 | unformat_input_t _line_input, *line_input = &_line_input; |
| 39 | clib_error_t *error = NULL; |
| 40 | u8 is_add = 1, is_ip4 = 1; |
| 41 | int i = 0; |
| 42 | u16 port = 0; |
| 43 | u32 node_index = ~0; |
| 44 | |
| 45 | if (!unformat_user (input, unformat_line_input, line_input)) |
| 46 | return 0; |
| 47 | |
| 48 | while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) |
| 49 | { |
| 50 | if (unformat (line_input, "add")) |
| 51 | is_add = 1; |
| 52 | else if (unformat (line_input, "del")) |
| 53 | is_add = 0; |
| 54 | else if (unformat (line_input, "ipv4")) |
| 55 | is_ip4 = 1; |
| 56 | else if (unformat (line_input, "ipv6")) |
| 57 | is_ip4 = 0; |
| 58 | else if (unformat (line_input, "%d", &i)) |
| 59 | port = i; |
| 60 | else if (unformat (line_input, "next-proto %U", unformat_next_node, vm, |
| 61 | &node_index)) |
| 62 | ; |
| 63 | else |
| 64 | { |
| 65 | error = clib_error_return (0, "parse error: '%U'", |
| 66 | format_unformat_error, line_input); |
| 67 | goto done; |
| 68 | } |
| 69 | } |
| 70 | if (port == 0) |
| 71 | { |
| 72 | error = clib_error_return (0, "missing port"); |
| 73 | goto done; |
| 74 | } |
| 75 | if (is_add && node_index == ~0) |
| 76 | { |
| 77 | error = clib_error_return (0, "missing protocol"); |
| 78 | goto done; |
| 79 | } |
| 80 | if (is_add) |
| 81 | udp_register_dst_port (vm, port, node_index, is_ip4); |
| 82 | else |
| 83 | udp_unregister_dst_port (vm, port, is_ip4); |
| 84 | |
| 85 | done: |
| 86 | unformat_free (line_input); |
| 87 | return error; |
| 88 | } |
| 89 | |
| 90 | /*? |
| 91 | * Register a port to decapsulate incoming UDP encapsulated packets. |
| 92 | * |
| 93 | * @cliexpar |
| 94 | * @clistart |
| 95 | * udp decap add ipv4 1234 next-proto mpls |
| 96 | * @cliend |
| 97 | * @cliexcmd{udp decap [add|del] [ipv4|ipv6] <dst-port> next-proto |
| 98 | <inner-protocol>} |
| 99 | ?*/ |
| 100 | |
| 101 | VLIB_CLI_COMMAND (udp_decap_add_command, static) = { |
| 102 | .path = "udp decap", |
| 103 | .short_help = |
| 104 | "udp decap [add|del] [ipv4|ipv6] <dst-port> next-proto <inner-protocol>", |
| 105 | .function = udp_decap_cli, |
| 106 | }; |