www.pudn.com > ids_snort.zip > checksum.h

/* $Id: checksum.h,v 1.3 2001/01/02 08:06:00 roesch Exp $ */ 
/* 
** Copyright (C) 2000,2001 Christopher Cramer  
** Snort is Copyright (C) 1998,1999,2000,2001 Martin Roesch  
** 
** This program is free software; you can redistribute it and/or modify 
** it under the terms of the GNU General Public License as published by 
** the Free Software Foundation; either version 2 of the License, or 
** (at your option) any later version. 
** 
** This program is distributed in the hope that it will be useful, 
** but WITHOUT ANY WARRANTY; without even the implied warranty of 
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
** GNU General Public License for more details. 
** 
** You should have received a copy of the GNU General Public License 
** along with this program; if not, write to the Free Software 
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
*/ 
 
#ifndef __CHECKSUM_H__ 
#define __CHECKSUM_H__ 
 
#include "snort.h" 
 
/* define checksum error flags */ 
#define CSE_IP    0x01 
#define CSE_TCP   0x02 
#define CSE_UDP   0x04 
#define CSE_ICMP  0x08 
#define CSE_IGMP  0x10 
 
u_int16_t checksum(u_int16_t *, u_int32_t, u_int16_t *, u_int32_t ); 
 
#endif /* __CHECKSUM_H__ */