diff options
Diffstat (limited to 'globals.h')
| -rw-r--r-- | globals.h | 57 |
1 files changed, 57 insertions, 0 deletions
@@ -1,3 +1,28 @@ +/* globals.h + * Global defines, etc. + * + * $Id: globals.h,v 1.3 1999/09/10 07:19:40 guy Exp $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@zing.org> + * Copyright 1998 Gerald Combs + * + * + * 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 __GLOBALS_H__ #define __GLOBALS_H__ @@ -21,6 +46,38 @@ #include "timestamp.h" #endif +#define MIN_PACKET_SIZE 68 /* minimum amount of packet data we can read */ + +/* Byte swapping routines */ +#define SWAP16(x) \ + ( (((x) & 0x00ff) << 8) | \ + (((x) & 0xff00) >> 8) ) +#define SWAP32(x) \ + ( (((x) & 0x000000ff) << 24) | \ + (((x) & 0x0000ff00) << 8) | \ + (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0xff000000) >> 24) ) + +/* Byte ordering */ +#ifndef BYTE_ORDER + #define LITTLE_ENDIAN 4321 + #define BIG_ENDIAN 1234 + #ifdef WORDS_BIGENDIAN + #define BYTE_ORDER BIG_ENDIAN + #else + #define BYTE_ORDER LITTLE_ENDIAN + #endif +#endif + +/* From the K&R book, p. 89 */ +#ifndef MAX + #define MAX(x, y) ((x) > (y) ? (x) : (y)) +#endif + +#ifndef MIN + #define MIN(x, y) ((x) < (y) ? (x) : (y)) +#endif + extern FILE *data_out_file; extern packet_info pi; extern capture_file cf; |