ipv4.h File Reference

The IPv4 header. More...

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

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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

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

The format to print an IPv4 address

#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

#define IPV4_DF   0x4000

Mask for Don't Fragment (DF) flag

#define IPV4_MF   0x2000

Mask for More Fragments (MF) flag

#define IPV4_OFFMASK   0x1fff

mask for Fragment Offset field

#define IPV4_RF   0x8000

Mask for reserved flag

Function Documentation

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