mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 01:53:55 +08:00
bc276fba5f
That allows dissectors such as the ERSPAN dissector to check individual flags without having their own definitions of the flags.
37 lines
1.7 KiB
C
37 lines
1.7 KiB
C
/* $OpenBSD: print-gre.c,v 1.6 2002/10/30 03:04:04 fgsch Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2002 Jason L. Wright (jason@thought.net)
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* \summary: Header flags for Generic Routing Encapsulation (GRE) */
|
|
|
|
#define GRE_CP 0x8000 /* checksum present */
|
|
#define GRE_RP 0x4000 /* routing present */
|
|
#define GRE_KP 0x2000 /* key present */
|
|
#define GRE_SP 0x1000 /* sequence# present */
|
|
#define GRE_sP 0x0800 /* source routing */
|
|
#define GRE_AP 0x0080 /* acknowledgment# present */
|