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nf_nat64_session.h
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nf_nat64_session.h
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/*
* NAT64 - Network Address Translator IPv6 to IPv4
*
* Copyright (C) 2010 Viagenie Inc. http://www.viagenie.ca
*
* Authors:
* Jean-Philippe Dionne <[email protected]>
* Simon Perreault <[email protected]>
* Marc Blanchet <[email protected]>
*
* NAT64 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.
*
* NAT64 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 NAT64. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _NF_NAT64_SESSION_H
#define _NF_NAT64_SESSION_H
#include <linux/time.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/in6.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/icmp.h>
#include <linux/icmpv6.h>
#include <linux/rbtree.h>
struct nat64_binding {
struct rb_node b_entry_by_ipv4;
struct rb_node b_entry_by_ipv6;
unsigned int b_sessions;
struct in6_addr b_saddr6; /* X' */
struct in_addr b_saddr4; /* T */
uint16_t b_sport6; /* x */
uint16_t b_sport4; /* t */
uint8_t b_proto;
};
struct nat64_session {
struct rb_node s_entry_by_ipv6;
struct rb_node s_entry_by_ipv4;
struct rb_node s_entry_by_expiry;
struct timespec s_expiry;
struct nat64_binding *s_binding;
struct in_addr s_daddr; /* Y',Z */
uint16_t s_dport; /* y,z */
uint8_t s_state;
};
const struct timespec * nat64_next_expiry(void);
void nat64_expire(void);
struct nat64_session *
nat64_ipv6_udp_session(struct ipv6hdr *ip6, struct udphdr *uh, int recur);
struct nat64_session *
nat64_ipv4_udp_session(struct iphdr *ip4, struct udphdr *uh, int recur);
struct nat64_session *
nat64_ipv6_tcp_session(struct ipv6hdr *ip6, struct tcphdr *th, int recur);
struct nat64_session *
nat64_ipv4_tcp_session(struct iphdr *ip4, struct tcphdr *th, int recur);
struct nat64_session *
nat64_ipv6_icmp_session(struct ipv6hdr *ip6, struct icmp6hdr *icmp6, int recur);
struct nat64_session *
nat64_ipv4_icmp_session(struct iphdr *ip4, struct icmphdr *icmp4, int recur);
#endif