icmpv4.h File Reference

#include <net/ipv4.h>
#include <net/net.h>
#include <stdint.h>

Include dependency graph for icmpv4.h:

Data Structures
struct	icmpv4_echo_t
struct	icmpv4_reply_t

Functions
void	icmpv4_receive_packet (net_interface_t *interface, uint8_t *packet, ipv4_header_t *header)
int	icmpv4_send_packet (net_interface_t *interface, uint8_t ip[4], icmpv4_reply_t *reply)

Detailed Description

See also

https://www.saminiir.com/lets-code-tcp-ip-stack-2-ipv4-icmpv4/

Function Documentation

icmpv4_receive_packet()

void icmpv4_receive_packet	(	net_interface_t *	interface,
		uint8_t *	packet,
		ipv4_header_t *	header )

Receives a ICMPv4 packet.

Parameters

interface	the interface on which the ICMPv4 packet has been received
packet	the ICMPv4 packet
ipv4_header	the IPv4 header

icmpv4_send_packet()

int icmpv4_send_packet	(	net_interface_t *	interface,
		uint8_t	ip[4],
		icmpv4_reply_t *	reply )

"Pings" an IPv4 address, i.e. sends an ICMPv4 packet to it and waits for an ICMPv4 reply.

Parameters

interface	the interface to use to send the ICMPv4 request
ip	the IPv4 address to ping
reply	the ICMPv4 reply

Returns

0 on success, something else otherwise

Create ICMPv4 ECHO packet.