GNUNET_TUN_IPv4Header Struct Reference

Standard IPv4 header. More...

#include <gnunet_tun_lib.h>

Data Fields
unsigned int	header_length: 4
unsigned int	version: 4
uint8_t	diff_serv
uint16_t	total_length
	Length of the packet, including this header. More...
uint16_t	identification
	Unique random ID for matching up fragments. More...
unsigned int	flags: 3
unsigned int	fragmentation_offset: 13
uint8_t	ttl
	How many more hops can this packet be forwarded? More...
uint8_t	protocol
	L4-protocol, for example, IPPROTO_UDP or IPPROTO_TCP. More...
uint16_t	checksum
	Checksum. More...
struct in_addr	source_address
	Origin of the packet. More...
struct in_addr	destination_address
	Destination of the packet. More...

Detailed Description

Standard IPv4 header.

Definition at line 102 of file gnunet_tun_lib.h.

Field Documentation

header_length

unsigned int GNUNET_TUN_IPv4Header::header_length

Definition at line 105 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header(), message_token(), and process_helper_messages().

version

unsigned int GNUNET_TUN_IPv4Header::version

Definition at line 106 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header(), and process_helper_messages().

diff_serv

uint8_t GNUNET_TUN_IPv4Header::diff_serv

Definition at line 113 of file gnunet_tun_lib.h.

total_length

uint16_t GNUNET_TUN_IPv4Header::total_length

Length of the packet, including this header.

Definition at line 118 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_calculate_tcp4_checksum(), GNUNET_TUN_calculate_udp4_checksum(), GNUNET_TUN_initialize_ipv4_header(), message_token(), and process_helper_messages().

identification

uint16_t GNUNET_TUN_IPv4Header::identification

Unique random ID for matching up fragments.

Definition at line 123 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header().

flags

unsigned int GNUNET_TUN_IPv4Header::flags

Definition at line 125 of file gnunet_tun_lib.h.

fragmentation_offset

unsigned int GNUNET_TUN_IPv4Header::fragmentation_offset

Definition at line 127 of file gnunet_tun_lib.h.

ttl

uint8_t GNUNET_TUN_IPv4Header::ttl

How many more hops can this packet be forwarded?

Definition at line 132 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header().

protocol

uint8_t GNUNET_TUN_IPv4Header::protocol

L4-protocol, for example, IPPROTO_UDP or IPPROTO_TCP.

Definition at line 137 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_calculate_tcp4_checksum(), GNUNET_TUN_calculate_udp4_checksum(), GNUNET_TUN_initialize_ipv4_header(), GNUNET_TUN_initialize_ipv6_header(), icmp_from_helper(), message_token(), and process_helper_messages().

checksum

uint16_t GNUNET_TUN_IPv4Header::checksum

Checksum.

Definition at line 142 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header().

source_address

struct in_addr GNUNET_TUN_IPv4Header::source_address

Origin of the packet.

Definition at line 147 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_calculate_tcp4_checksum(), GNUNET_TUN_calculate_udp4_checksum(), GNUNET_TUN_initialize_ipv4_header(), message_token(), process_helper_messages(), send_icmp_packet_via_tun(), send_tcp_packet_via_tun(), and send_udp_packet_via_tun().

destination_address

struct in_addr GNUNET_TUN_IPv4Header::destination_address

Destination of the packet.

Definition at line 152 of file gnunet_tun_lib.h.

Referenced by GNUNET_TUN_initialize_ipv4_header(), message_token(), process_helper_messages(), send_icmp_packet_via_tun(), send_tcp_packet_via_tun(), and send_udp_packet_via_tun().

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

• src/include/gnunet_tun_lib.h