netif Struct Reference

#include <netif.h>

Data Fields
struct netif *	next
netif_input_fn	input
netif_linkoutput_fn	linkoutput
void *	state
u16_t	mtu
u8_t	hwaddr [NETIF_MAX_HWADDR_LEN]
u8_t	hwaddr_len
u8_t	flags
char	name [2]
u8_t	num

Detailed Description

Generic data structure used for all lwIP network interfaces. The following fields should be filled in by the initialization function for the device driver: hwaddr_len, hwaddr[], mtu, flags

Field Documentation

struct netif* netif::next

pointer to next in linked list

netif_input_fn netif::input

This function is called by the network device driver to pass a packet up the TCP/IP stack.

netif_linkoutput_fn netif::linkoutput

This function is called by ethernet_output() when it wants to send a packet on the interface. This function outputs the pbuf as-is on the link medium.

void* netif::state

This field can be set by the device driver and could point to state information for the device.

u16_t netif::mtu

maximum transfer unit (in bytes)

u8_t netif::hwaddr[NETIF_MAX_HWADDR_LEN]

link level hardware address of this interface

u8_t netif::hwaddr_len

number of bytes used in hwaddr

u8_t netif::flags

flags (

See Also

Flags)

char netif::name[2]

descriptive abbreviation

u8_t netif::num

number of this interface. Used for if_api and netifapi_netif, as well as for IPv6 zones