Checksum Computation!!

[ltp2tcp] / checksums.h

diff --git a/checksums.h b/checksums.h
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+/******************************************************************************
+IPv4 and IPv6 Header Checksum Code
+
+Copyright (C) 2013  Samuel Jero <sj323707@ohio.edu>
+
+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 3 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, see <http://www.gnu.org/licenses/>.
+
+Author: Samuel Jero <sj323707@ohio.edu>
+Date: 02/2013
+******************************************************************************/
+#ifndef CHECKUMS_H
+#define CHECKSUMS_H
+
+#include <ctype.h>
+#include <sys/types.h>
+
+#define IP4_ADDR_LEN   4
+#define IP6_ADDR_LEN   16
+
+u_int16_t ipv6_pseudohdr_chksum(u_char* buff, int len, u_char* dest, u_char* src, int type);
+u_int16_t ipv4_pseudohdr_chksum(u_char* buff, int len, u_char* dest, u_char* src, int type);
+u_int16_t ipv4_chksum(u_char* buff, int len);
+
+
+#endif