summaryrefslogtreecommitdiffstats
path: root/vnet/vnet/l2tp/packet.h
blob: 88acba41d4b1e1d8e4ddb23fb8d3e35e6d560f49 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/*
 * packet.h : L2TPv3 packet header format
 *
 * Copyright (c) 2013 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.
 */

#ifndef __included_l2tp_packet_h__
#define __included_l2tp_packet_h__

/* 
 * See RFC4719 for packet format.
 * Note: the l2_specific_sublayer is present in current Linux l2tpv3
 * tunnels. It is not present in IOS XR l2tpv3 tunnels.
 * The Linux implementation is almost certainly wrong.
 */
typedef CLIB_PACKED(struct {
    u32 session_id;
    u64 cookie;
    u32 l2_specific_sublayer;   /* set to 0 (if present) */
}) l2tpv3_header_t;

#endif /* __included_l2tp_packet_h__ */