| /* |
| * 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 <netinet/ip.h> |
| #include <netinet/ip6.h> |
| #include <stdint.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, uint32_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__ */ |
