IPv4 header type and helper function definitions. More...

Detailed Description

IPv4 header type and helper function definitions.

Author: José Ignacio Alamos jiala.nosp@m.mos@.nosp@m.uc.cl; Bas Stottelaar basst.nosp@m.otte.nosp@m.laar@.nosp@m.gmai.nosp@m.l.com

Definition in file hdr.h.

#include <assert.h>
#include "byteorder.h"
#include "net/ipv4/addr.h"

Include dependency graph for hdr.h:

Data Structures
struct	ipv4_hdr_t
	Data type to represent an IPv4 packet header. More...

Functions
static void	ipv4_hdr_set_version (ipv4_hdr_t *hdr)
	Sets the version field of `hdr` to 4.

static uint8_t	ipv4_hdr_get_version (ipv4_hdr_t *hdr)
	Gets the value of the version field of `hdr`.

static void	ipv4_hdr_set_ihl (ipv4_hdr_t *hdr, uint16_t ihl)
	Sets the Internet Header Length field of `hdr`.

static uint16_t	ipv4_hdr_get_ihl (ipv4_hdr_t *hdr)
	Gets the value of the Internet Header Length field of `hdr`.

static void	ipv4_hdr_set_flags (ipv4_hdr_t *hdr, uint8_t flags)
	Sets the Version Control Flags field of `hdr`.

static uint8_t	ipv4_hdr_get_flags (ipv4_hdr_t *hdr)
	Gets the value of the Version Control Flags field of `hdr`.

static void	ipv4_hdr_set_fo (ipv4_hdr_t *hdr, uint16_t fo)
	Sets the Fragment Offset field of `hdr`.

static uint16_t	ipv4_hdr_get_fo (ipv4_hdr_t *hdr)
	Gets the value of the Fragment Offset field of `hdr`.

Data Structures