netif Struct Reference

Generic data structure used for all lwIP network interfaces. More...

#include <netif.h>

List of all members.

Public Attributes
struct netif *	next
	pointer to next in linked list
ip_addr_t	ip_addr
	IP address configuration in network byte order.
ip_addr_t	netmask
ip_addr_t	gw
netif_input_fn	input
	This function is called by the network device driver to pass a packet up the TCP/IP stack.
netif_output_fn	output
	This function is called by the IP module when it wants to send a packet on the interface.
netif_linkoutput_fn	linkoutput
	This function is called by the ARP module when it wants to send a packet on the interface.
void *	state
	This field can be set by the device driver and could point to state information for the device.
u16_t	mtu
	maximum transfer unit (in bytes)
u8_t	hwaddr_len
	number of bytes used in hwaddr
u8_t	hwaddr [NETIF_MAX_HWADDR_LEN]
	link level hardware address of this interface
u8_t	flags
	flags (see NETIF_FLAG_ above)
char	name [2]
	descriptive abbreviation
u8_t	num
	number of this interface

---

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

---

Member Data Documentation

u8_t netif::flags

flags (see NETIF_FLAG_ above)

ip_addr_t netif::gw

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

netif_input_fn netif::input

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

ip_addr_t netif::ip_addr

IP address configuration in network byte order.

netif_linkoutput_fn netif::linkoutput

This function is called by the ARP module when it wants to send a packet on the interface.

This function outputs the pbuf as-is on the link medium.

u16_t netif::mtu

maximum transfer unit (in bytes)

char netif::name[2]

descriptive abbreviation

ip_addr_t netif::netmask

struct netif* netif::next

pointer to next in linked list

u8_t netif::num

number of this interface

netif_output_fn netif::output

This function is called by the IP module when it wants to send a packet on the interface.

This function typically first resolves the hardware address, then sends the packet.

void* netif::state

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

---

The documentation for this struct was generated from the following file:

• alexb/lib/lwip/contrib/src/include/lwip/netif.h