ip64-addrmap.c File Reference

#include "ip64-addrmap.h"
#include "lib/memb.h"
#include "lib/list.h"
#include "ip64-conf.h"
#include <string.h>

Macros
#define	FIRST_MAPPED_PORT   10000
#define	LAST_MAPPED_PORT   20000
#define	NUM_ENTRIES   32
#define	printf(...)

Functions
static void	check_age (void)
static void	increase_mapped_port (void)
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)
	Create a new address mapping from an IPv6 address/port, an IPv4 address/port, and a protocol number. More...
void	ip64_addrmap_init (void)
	Initialize the ip64_addrmap module. More...
struct ip64_addrmap_entry *	ip64_addrmap_list (void)
	Obtain the list of all address mappings. More...
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 inside the IPv6 network, given the IPv6 address/port, the IPv4 address/port, and the protocol. More...
struct ip64_addrmap_entry *	ip64_addrmap_lookup_port (uint16_t mapped_port, uint8_t protocol)
	Look up an address mapping from the outside IPv4 network, given the mapped port number and protocol. More...
void	ip64_addrmap_set_lifetime (struct ip64_addrmap_entry *e, clock_time_t time)
	Set the lifetime of an address mapping. More...
void	ip64_addrmap_set_recycleble (struct ip64_addrmap_entry *e)
	Mark an address mapping to be recyclable. More...
	LIST (entrylist)
	MEMB (entrymemb, struct ip64_addrmap_entry, NUM_ENTRIES)
static int	recycle (void)

Variables
static uint16_t	mapped_port = FIRST_MAPPED_PORT

#define FIRST_MAPPED_PORT   10000

Referenced by increase_mapped_port(), and ip64_addrmap_init().

#define LAST_MAPPED_PORT   20000

Referenced by increase_mapped_port().

#define NUM_ENTRIES   32

#define printf

(

...

)

static void check_age ( void  )

static

References list_head(), list_item_next(), list_remove(), memb_free(), NULL, ip64_addrmap_entry::timer, and timer_expired().

Referenced by ip64_addrmap_create(), ip64_addrmap_lookup(), and ip64_addrmap_lookup_port().

static void increase_mapped_port ( void  )

static

References FIRST_MAPPED_PORT, LAST_MAPPED_PORT, and mapped_port.

Referenced by ip64_addrmap_create().

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
	)

Create a new address mapping from an IPv6 address/port, an IPv4 address/port, and a protocol number.

References check_age(), ip64_addrmap_entry::flags, FLAGS_NONE, increase_mapped_port(), ip64_addrmap_entry::ip4addr, ip64_addrmap_entry::ip4port, ip64_addrmap_entry::ip6addr, ip64_addrmap_entry::ip6port, list_add(), list_head(), list_item_next(), ip64_addrmap_entry::mapped_port, mapped_port, memb_alloc(), n, NULL, ip64_addrmap_entry::protocol, recycle(), ip64_addrmap_entry::timer, timer_set(), uip_ip4addr_copy, and uip_ip6addr_copy.

Referenced by ip64_6to4().

void ip64_addrmap_init

(

void

)

Initialize the ip64_addrmap module.

References FIRST_MAPPED_PORT, list_init(), mapped_port, and memb_init().

struct ip64_addrmap_entry* ip64_addrmap_list

(

void

)

Obtain the list of all address mappings.

References list_head().

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 inside the IPv6 network, given the IPv6 address/port, the IPv4 address/port, and the protocol.

References check_age(), ip64_addrmap_entry::ip4addr, ip64_addrmap_entry::ip4port, ip64_addrmap_entry::ip6addr, ip64_addrmap_entry::ip6port, list_head(), list_item_next(), NULL, printf, ip64_addrmap_entry::protocol, uip_htons(), uip_ip4addr_cmp, and uip_ip6addr_cmp.

Referenced by ip64_6to4().

struct ip64_addrmap_entry* ip64_addrmap_lookup_port	(	uint16_t	mapped_port,
		uint8_t	protocol
	)

Look up an address mapping from the outside IPv4 network, given the mapped port number and protocol.

References check_age(), list_head(), list_item_next(), ip64_addrmap_entry::mapped_port, NULL, printf, and ip64_addrmap_entry::protocol.

Referenced by ip64_4to6().

void ip64_addrmap_set_lifetime	(	struct ip64_addrmap_entry *	e,
		clock_time_t	time
	)

Set the lifetime of an address mapping.

References NULL, ip64_addrmap_entry::timer, and timer_set().

Referenced by ip64_6to4().

void ip64_addrmap_set_recycleble

(

struct ip64_addrmap_entry *

e

)

Mark an address mapping to be recyclable.

References ip64_addrmap_entry::flags, FLAGS_RECYCLABLE, and NULL.

Referenced by ip64_6to4().

LIST

(

entrylist

)

MEMB	(	entrymemb	,
		struct ip64_addrmap_entry	,
		NUM_ENTRIES
	)

static int recycle ( void  )

static

References ip64_addrmap_entry::flags, FLAGS_RECYCLABLE, list_head(), list_item_next(), list_remove(), memb_free(), NULL, ip64_addrmap_entry::timer, and timer_remaining().

Referenced by ip64_addrmap_create().

uint16_t mapped_port = FIRST_MAPPED_PORT

static

Referenced by increase_mapped_port(), ip64_addrmap_create(), and ip64_addrmap_init().