Re-import of fprobe-ulog

[iptables.git] / trunk / src / hash.h

diff --git a/trunk/src/hash.h b/trunk/src/hash.h
new file mode 100644 (file)
index 0000000..31fb325
--- /dev/null
+++ b/trunk/src/hash.h
@@ -0,0 +1,52 @@
+/*
+       Copyright (C) Slava Astashonok <sla@0n.ru>
+
+       This program is free software; you can redistribute it and/or
+       modify it under the terms of the GNU General Public License.
+
+       $Id: hash.h,v 1.1.1.1.2.3.2.1 2005/01/29 19:30:41 sla Exp $
+*/
+
+#ifndef _HASH_H_
+#define _HASH_H_
+
+#ifndef HASH_TYPE_XOR
+# ifndef HASH_TYPE_CRC
+#  error HASH_TYPE_XOR or HASH_TYPE_CRC must be defined
+# endif
+#else
+# ifdef HASH_TYPE_CRC
+#  error HASH_TYPE_XOR or HASH_TYPE_CRC must be defined
+# endif
+#endif
+
+#if HASH_BITS != 16
+# ifdef HASH_TYPE_CRC
+#  error illegal value in HASH_BITS
+# endif
+# if HASH_BITS != 8
+#  error illegal value in HASH_BITS
+# endif
+#endif
+
+#include <my_inttypes.h>
+
+#if HASH_BITS == 8
+typedef uint8_t hash_t;
+#endif
+
+#if HASH_BITS == 16
+typedef uint16_t hash_t;
+#endif
+
+#define CRC16_POLY  0x8005
+
+#ifndef RNDDEV
+# define RNDDEV "/dev/random"
+#endif
+
+uint16_t crc16(uint16_t, uint8_t);
+hash_t hash(void *, int);
+void hash_init();
+
+#endif