pcap-common.h File Reference

#include "wtap.h"

Go to the source code of this file.

Functions
unsigned	wtap_max_snaplen_for_encap (int wtap_encap)
	Get the maximum snapshot length for a given capture encapsulation type.
int	pcap_process_pseudo_header (FILE_T fh, bool is_nokia, int wtap_encap, unsigned packet_size, wtap_rec *rec, int *err, char **err_info)
void	pcap_read_post_process (bool is_nokia, int wtap_encap, wtap_rec *rec, bool bytes_swapped, int fcs_len)
unsigned	pcap_get_phdr_size (int encap, const union wtap_pseudo_header *pseudo_header)
	Retrieves the size of the pseudo-header for a given encapsulation type and pseudo-header.
bool	pcap_write_phdr (wtap_dumper *wdh, int wtap_encap, const union wtap_pseudo_header *pseudo_header, int *err)
	Writes a packet header to a dump file.

Detailed Description

Declarations for code common to pcap and pcapng file formats

Wiretap Library Copyright (c) 1998 by Gilbert Ramirez gram@.nosp@m.alum.nosp@m.ni.ri.nosp@m.ce.e.nosp@m.du

File format support for pcapng file format Copyright (c) 2007 by Ulf Lamping ulf.l.nosp@m.ampi.nosp@m.ng@we.nosp@m.b.de

SPDX-License-Identifier: GPL-2.0-or-later

Function Documentation

pcap_get_phdr_size()

unsigned pcap_get_phdr_size ( int  encap, const union wtap_pseudo_header *  pseudo_header  )

extern

Retrieves the size of the pseudo-header for a given encapsulation type and pseudo-header.

Parameters

encap	The encapsulation type.
pseudo_header	Pointer to the pseudo-header union.

Returns

The size of the pseudo-header, or 0 if not applicable.

pcap_write_phdr()

bool pcap_write_phdr ( wtap_dumper *  wdh, int  wtap_encap, const union wtap_pseudo_header *  pseudo_header, int *  err  )

extern

Writes a packet header to a dump file.

Parameters

wdh	Pointer to the wtap_dumper structure.
wtap_encap	The encapsulation type of the packet.
pseudo_header	Pointer to the pseudo-header of the packet.
err	Pointer to an integer where any error code will be stored.

Returns

true if the header was successfully written, false otherwise.

wtap_max_snaplen_for_encap()

unsigned wtap_max_snaplen_for_encap ( int  wtap_encap )

extern

Get the maximum snapshot length for a given capture encapsulation type.

Parameters

wtap_encap

The capture encapsulation type.

Returns

unsigned The maximum snapshot length for the specified encapsulation type.