2 * pg.c: packet generator for L2TPv3 header
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vlib/vlib.h>
19 #include <vnet/pg/pg.h>
20 #include <vnet/l2tp/l2tp.h>
28 pg_edit_t l2_sublayer;
29 } pg_l2tp_header_l2_sublayer_t;
32 pg_l2tp_header_init (pg_l2tp_header_t * e)
34 pg_edit_init (&e->session_id, l2tpv3_header_t, session_id);
35 pg_edit_init (&e->cookie, l2tpv3_header_t, cookie);
39 unformat_pg_l2tp_header (unformat_input_t * input, va_list * args)
41 pg_stream_t * s = va_arg (*args, pg_stream_t *);
43 u32 group_index, error;
44 vlib_main_t * vm = vlib_get_main();
46 h = pg_create_edit_group (s, sizeof (h[0]),
47 sizeof (l2tpv3_header_t) - sizeof(u32),
49 pg_l2tp_header_init (h);
53 // session id and cookie are required
54 if (! unformat (input, "L2TP: session_id %U cookie %U",
55 unformat_pg_edit, unformat_pg_number, &h->session_id,
56 unformat_pg_edit, unformat_pg_number, &h->cookie)) {
60 // "l2_sublayer <value>" is optional
61 if (unformat (input, "l2_sublayer")) {
62 pg_l2tp_header_l2_sublayer_t * h2;
64 h2 = pg_add_edits (s, sizeof (h2[0]), sizeof(u32), group_index);
65 pg_edit_init (&h2->l2_sublayer, l2tpv3_header_t, l2_specific_sublayer);
66 if (! unformat_user (input, unformat_pg_edit,
67 unformat_pg_number, &h2->l2_sublayer)) {
72 // Parse an ethernet header if it is present
74 pg_node_t * pg_node = 0;
75 vlib_node_t * eth_lookup_node;
77 eth_lookup_node = vlib_get_node_by_name (vm, (u8 *)"ethernet-input");
78 ASSERT (eth_lookup_node);
80 pg_node = pg_get_node (eth_lookup_node->index);
82 if (pg_node && pg_node->unformat_edit
83 && unformat_user (input, pg_node->unformat_edit, s))
91 pg_free_edit_group (s);