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