nes-proj/core/net/ip64/ip64-addrmap.h

104 lines
3.3 KiB
C

/*
* Copyright (c) 2012, Thingsquare, http://www.thingsquare.com/.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef IP64_ADDRMAP_H
#define IP64_ADDRMAP_H
#include "sys/timer.h"
#include "net/ip/uip.h"
struct ip64_addrmap_entry {
struct ip64_addrmap_entry *next;
struct timer timer;
uip_ip6addr_t ip6addr;
uip_ip4addr_t ip4addr;
uint32_t ip6to4, ip4to6;
uint16_t mapped_port;
uint16_t ip6port;
uint16_t ip4port;
uint8_t protocol;
uint8_t flags;
};
#define FLAGS_NONE 0
#define FLAGS_RECYCLABLE 1
/**
* Initialize the ip64_addrmap module.
*/
void ip64_addrmap_init(void);
/**
* Look up an address mapping from inside the IPv6 network, given the
* IPv6 address/port, the IPv4 address/port, and the protocol.
*/
struct ip64_addrmap_entry *ip64_addrmap_lookup(const uip_ip6addr_t *ip6addr,
uint16_t ip6port,
const uip_ip4addr_t *ip4addr,
uint16_t ip4port,
uint8_t protocol);
/**
* Look up an address mapping from the outside IPv4 network, given the
* mapped port number and protocol.
*/
struct ip64_addrmap_entry *ip64_addrmap_lookup_port(uint16_t mappedport,
uint8_t protocol);
/**
* Create a new address mapping from an IPv6 address/port, an IPv4
* address/port, and a protocol number.
*/
struct ip64_addrmap_entry *ip64_addrmap_create(const uip_ip6addr_t *ip6addr,
uint16_t ip6port,
const uip_ip4addr_t *ip4addr,
uint16_t ip4port,
uint8_t protocol);
/**
* Set the lifetime of an address mapping.
*/
void ip64_addrmap_set_lifetime(struct ip64_addrmap_entry *e,
clock_time_t lifetime);
/**
* Mark an address mapping to be recyclable.
*/
void ip64_addrmap_set_recycleble(struct ip64_addrmap_entry *e);
/**
* Obtain the list of all address mappings.
*/
struct ip64_addrmap_entry *ip64_addrmap_list(void);
#endif /* IP64_ADDRMAP_H */