uip-fw.c File Reference

uIP packet forwarding.

Author

Adam Dunkels adam@.nosp@m.sics.nosp@m..se

This file implements a number of simple functions which do packet forwarding over multiple network interfaces with uIP.

#include <string.h>
#include "contiki-conf.h"
#include "net/ip/uip.h"
#include "net/ip/uip_arch.h"
#include "net/ipv4/uip-fw.h"

Data Structures
struct	fwcache_entry
struct	icmpip_hdr
struct	tcpip_hdr

Macros
#define	BUF   ((struct tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
#define	FW_TIME   20
#define	FWCACHE_SIZE   2
#define	ICMP_ECHO   8
#define	ICMP_TE   11
#define	ICMPBUF   ((struct icmpip_hdr *)&uip_buf[UIP_LLH_LEN])
#define	notdef   0

Functions
static struct uip_fw_netif *	find_netif (void)
static void	fwcache_register (void)
static unsigned char	ipaddr_maskcmp (uip_ipaddr_t *ipaddr, uip_ipaddr_t *netipaddr, uip_ipaddr_t *netmask)
static void	time_exceeded (void)
void	uip_fw_default (struct uip_fw_netif *netif)
	Register a default network interface. More...
uint8_t	uip_fw_forward (void)
	Forward an IP packet in the uip_buf buffer. More...
void	uip_fw_init (void)
	Initialize the uIP packet forwarding module. More...
uint8_t	uip_fw_output (void)
	Output an IP packet on the correct network interface. More...
void	uip_fw_periodic (void)
	Perform periodic processing. More...
void	uip_fw_register (struct uip_fw_netif *netif)
	Register a network interface with the forwarding module. More...

Variables
static struct uip_fw_netif *	defaultnetif = NULL
static struct fwcache_entry	fwcache [FWCACHE_SIZE]
static struct uip_fw_netif *	netifs = NULL