The IPv4 header. More...

#include "rohc_utils.h"
#include <stdint.h>
#include "config.h"

Include dependency graph for ipv4.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	ipv4_hdr
	The IPv4 header. More...

Macros
#define	IPV4_ADDR_FORMAT "%02x%02x%02x%02x (%u.%u.%u.%u)"

#define	IPV4_ADDR_RAW(x)

#define	IPV4_RF 0x8000

#define	IPV4_DF 0x4000

#define	IPV4_MF 0x2000

#define	IPV4_OFFMASK 0x1fff

Functions
static bool	ipv4_is_fragment (const struct ipv4_hdr *const ipv4)
	Whether the IPv4 packet is fragmented or not. More...

Detailed Description

The IPv4 header.

Author: Didier Barvaux didie.nosp@m.r@ba.nosp@m.rvaux.nosp@m..org

Macro Definition Documentation

◆ IPV4_ADDR_FORMAT

#define IPV4_ADDR_FORMAT "%02x%02x%02x%02x (%u.%u.%u.%u)"

The format to print an IPv4 address

◆ IPV4_ADDR_RAW

#define IPV4_ADDR_RAW ( x )

Value:

(x)[0], (x)[1], (x)[2], (x)[3], \

(x)[0], (x)[1], (x)[2], (x)[3]

The data to print an IPv4 address in raw format

◆ IPV4_DF

#define IPV4_DF 0x4000

Mask for Don't Fragment (DF) flag

◆ IPV4_MF

#define IPV4_MF 0x2000

Mask for More Fragments (MF) flag

◆ IPV4_OFFMASK

#define IPV4_OFFMASK 0x1fff

mask for Fragment Offset field

◆ IPV4_RF

#define IPV4_RF 0x8000

Mask for reserved flag

Function Documentation

◆ ipv4_is_fragment()

static bool ipv4_is_fragment ( const struct ipv4_hdr *const ipv4 )

inlinestatic

Whether the IPv4 packet is fragmented or not.

The IPv4 packet shall be at least sizeof(struct ipv4_hdr) long.

Parameters

ipv4	The IPv4 packet to check

Returns: true if the IPv4 packet is a fragment, false if the IPv4 packet is not a fragment

Data Structures

Macros

Functions