tools/src/DTNTun/receiver.c File Reference

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "receiver.h"
#include "ip.h"

Include dependency graph for receiver.c:

Go to the source code of this file.

Defines
#define	PING_BOOSTER
Functions
void	process_ipv4 (uint16_t size, char *packet)
void	process_icmp (uint16_t size, char *packet, uint16_t icmp_offset)
uint16_t	ip_checksum (void *start, unsigned int count, uint32_t initial_value)
void	process_packet (uint16_t size, char *packet)
void	print_packet (uint16_t size, char *packet)
void *	receiver_run (void *arg)

---

Define Documentation

#define PING_BOOSTER

Definition at line 66 of file receiver.c.

---

Function Documentation

uint16_t ip_checksum	(	void *	start,
		unsigned int	count,
		uint32_t	initial_value
	)

Calculates a IP checksum (as needed by IP, TCP and UDP). Parameters are start points to the beginning of the data to be checksummed count Indicates how many bytes should be checksummed Since protcols like IP and UDP work with so called Pseudo Headers (see RFC for details) you can precalculate that part and give it as initial_value to this function

Definition at line 134 of file receiver.c.

Referenced by process_icmp().

void print_packet	(	uint16_t	size,
		char *	packet
	)

Definition at line 32 of file receiver.c.

Referenced by process_icmp(), and receiver_run().

void process_icmp	(	uint16_t	size,
		char *	packet,
		uint16_t	icmp_offset
	)

Definition at line 67 of file receiver.c.

References GET_UINT32, ICMP_CODE, ICMP_CRC, ICMP_ECHO_REPLY, ICMP_ECHO_REQUEST, ICMP_TYPE, ip_checksum(), IPV4_CHECKSUM, IPV4_DESTINATION, IPV4_SOURCE, print_packet(), SET_UINT16, and SET_UINT32.

Referenced by process_ipv4().

Here is the call graph for this function:

void process_ipv4	(	uint16_t	size,
		char *	packet
	)

Definition at line 39 of file receiver.c.

References IP_PROT_ICMP, IP_PROT_TCP, IP_PROT_UDP, IPV4_PROTOCOL, and process_icmp().

Referenced by process_packet().

Here is the call graph for this function:

void process_packet	(	uint16_t	size,
		char *	packet
	)

Definition at line 19 of file receiver.c.

References IP_VERSION, and process_ipv4().

Referenced by receiver_run().

Here is the call graph for this function:

void* receiver_run

(

void *

arg

)

Definition at line 159 of file receiver.c.

References BUFSIZE, print_packet(), and process_packet().

Referenced by main().

Here is the call graph for this function: