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/*
* Copyright 2011 Daniel Drown
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* checksum.h - checksum functions
*/
#ifndef __CHECKSUM_H__
#define __CHECKSUM_H__
#include <stdint.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
uint32_t ip_checksum_add(uint32_t current, const void *data, int len);
uint16_t ip_checksum_finish(uint32_t temp_sum);
uint16_t ip_checksum(const void *data, int len);
uint32_t ipv6_pseudo_header_checksum(const struct ip6_hdr *ip6, uint16_t len, uint8_t protocol);
uint32_t ipv4_pseudo_header_checksum(const struct iphdr *ip, uint16_t len);
uint16_t ip_checksum_adjust(uint16_t checksum, uint32_t old_hdr_sum, uint32_t new_hdr_sum);
#endif /* __CHECKSUM_H__ */
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