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Diffstat (limited to 'translate.h')
| -rw-r--r-- | translate.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/translate.h b/translate.h deleted file mode 100644 index 0e520f7..0000000 --- a/translate.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * 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. - * - * translate.h - translate from one version of ip to another - */ -#ifndef __TRANSLATE_H__ -#define __TRANSLATE_H__ - -#include <linux/icmp.h> -#include <linux/if_tun.h> -#include <netinet/icmp6.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/ip6.h> -#include <netinet/ip_icmp.h> -#include <netinet/tcp.h> -#include <netinet/udp.h> - -#include "clatd.h" -#include "common.h" - -#define MAX_TCP_HDR (15 * 4) // Data offset field is 4 bits and counts in 32-bit words. - -// Calculates the checksum over all the packet components starting from pos. -uint16_t packet_checksum(uint32_t checksum, clat_packet packet, clat_packet_index pos); - -// Returns the total length of the packet components after pos. -uint16_t packet_length(clat_packet packet, clat_packet_index pos); - -// Returns true iff the given IPv6 address is in the plat subnet. -int is_in_plat_subnet(const struct in6_addr *addr6); - -// Functions to create tun, IPv4, and IPv6 headers. -void fill_tun_header(struct tun_pi *tun_header, uint16_t proto); -void fill_ip_header(struct iphdr *ip_targ, uint16_t payload_len, uint8_t protocol, - const struct ip6_hdr *old_header); -void fill_ip6_header(struct ip6_hdr *ip6, uint16_t payload_len, uint8_t protocol, - const struct iphdr *old_header); - -// Translate and send packets. -void translate_packet(int fd, int to_ipv6, const uint8_t *packet, size_t packetsize); - -// Translate IPv4 and IPv6 packets. -int ipv4_packet(clat_packet out, clat_packet_index pos, const uint8_t *packet, size_t len); -int ipv6_packet(clat_packet out, clat_packet_index pos, const uint8_t *packet, size_t len); - -// Deal with fragmented packets. -size_t maybe_fill_frag_header(struct ip6_frag *frag_hdr, struct ip6_hdr *ip6_targ, - const struct iphdr *old_header); -uint8_t parse_frag_header(const struct ip6_frag *frag_hdr, struct iphdr *ip_targ); - -// Deal with fragmented packets. -size_t maybe_fill_frag_header(struct ip6_frag *frag_hdr, struct ip6_hdr *ip6_targ, - const struct iphdr *old_header); -uint8_t parse_frag_header(const struct ip6_frag *frag_hdr, struct iphdr *ip_targ); - -// Translate ICMP packets. -int icmp_to_icmp6(clat_packet out, clat_packet_index pos, const struct icmphdr *icmp, - uint32_t checksum, const uint8_t *payload, size_t payload_size); -int icmp6_to_icmp(clat_packet out, clat_packet_index pos, const struct icmp6_hdr *icmp6, - const uint8_t *payload, size_t payload_size); - -// Translate generic IP packets. -int generic_packet(clat_packet out, clat_packet_index pos, const uint8_t *payload, size_t len); - -// Translate TCP and UDP packets. -int tcp_packet(clat_packet out, clat_packet_index pos, const struct tcphdr *tcp, uint32_t old_sum, - uint32_t new_sum, size_t len); -int udp_packet(clat_packet out, clat_packet_index pos, const struct udphdr *udp, uint32_t old_sum, - uint32_t new_sum, size_t len); - -int tcp_translate(clat_packet out, clat_packet_index pos, const struct tcphdr *tcp, - size_t header_size, uint32_t old_sum, uint32_t new_sum, const uint8_t *payload, - size_t payload_size); -int udp_translate(clat_packet out, clat_packet_index pos, const struct udphdr *udp, - uint32_t old_sum, uint32_t new_sum, const uint8_t *payload, size_t payload_size); - -#endif /* __TRANSLATE_H__ */ |