mirror of
https://code.semirocket.science/wrapsix
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51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*
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* WrapSix
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* Copyright (C) 2008-2012 Michal Zima <xhire@mujmalysvet.cz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CHECKSUM_H
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#define CHECKSUM_H
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#include "ipv4.h"
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#include "ipv6.h"
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unsigned short checksum(const void *data, int length);
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unsigned short checksum_update(unsigned short old_sum,
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unsigned short *old_data, short old_len,
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unsigned short *new_data, short new_len);
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unsigned short checksum_ipv4(struct s_ipv4_addr ip_src,
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struct s_ipv4_addr ip_dest, unsigned short length,
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unsigned char proto, unsigned char *payload);
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unsigned short checksum_ipv6(struct s_ipv6_addr ip_src,
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struct s_ipv6_addr ip_dest, unsigned short length,
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unsigned char proto, unsigned char *payload);
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unsigned short checksum_ipv4_update(unsigned short old_sum,
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struct s_ipv6_addr ip6_src,
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struct s_ipv6_addr ip6_dest,
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unsigned short old_port,
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struct s_ipv4_addr ip4_src,
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struct s_ipv4_addr ip4_dest,
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unsigned short new_port);
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unsigned short checksum_ipv6_update(unsigned short old_sum,
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struct s_ipv4_addr ip4_src,
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struct s_ipv4_addr ip4_dest,
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unsigned short old_port,
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struct s_ipv6_addr ip6_src,
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struct s_ipv6_addr ip6_dest,
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unsigned short new_port);
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#endif /* CHECKSUM_H */
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