1/*
2 * Copyright (c) 2015 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#ifndef included_vnet_hdlc_packet_h
16#define included_vnet_hdlc_packet_h
17
18/*
19 * HDLC packet format
20 *
21 * Copyright (c) 2009 Eliot Dresselhaus
22 *
23 * Permission is hereby granted, free of charge, to any person obtaining
24 * a copy of this software and associated documentation files (the
25 * "Software"), to deal in the Software without restriction, including
26 * without limitation the rights to use, copy, modify, merge, publish,
27 * distribute, sublicense, and/or sell copies of the Software, and to
28 * permit persons to whom the Software is furnished to do so, subject to
29 * the following conditions:
30 *
31 * The above copyright notice and this permission notice shall be
32 * included in all copies or substantial portions of the Software.
33 *
34 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
35 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
36 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
37 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
38 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
39 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
40 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
41 */
42
43#define foreach_hdlc_protocol			\
44  _ (0x0800, ip4)				\
45  _ (0x2000, cdp)				\
46  _ (0x8035, slarp)				\
47  _ (0x8847, mpls_unicast)			\
48  _ (0x8848, mpls_multicast)			\
49  _ (0x86dd, ip6)				\
50  _ (0xfefe, osi)
51
52typedef enum
53{
54#define _(n,f) HDLC_PROTOCOL_##f = n,
55  foreach_hdlc_protocol
56#undef _
57} hdlc_protocol_t;
58
59typedef struct
60{
61  /* Set to 0x0f for unicast; 0x8f for broadcast. */
62  u8 address;
63
64  /* Always zero. */
65  u8 control;
66
67  /* Layer 3 protocol for this packet. */
68  u16 protocol;
69
70  /* Layer 3 payload. */
71  u8 payload[0];
72} hdlc_header_t;
73
74#endif /* included_vnet_hdlc_packet_h */
75
76/*
77 * fd.io coding-style-patch-verification: ON
78 *
79 * Local Variables:
80 * eval: (c-set-style "gnu")
81 * End:
82 */
83