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/** @file
*
* Copyright 2006, Iskratel , Slovenia
* By Jakob Bratkovic <j.bratkovic@iskratel.si> and
* Miha Jemec <m.jemec@iskratel.si>
*
* based on rtp_stream.h
* Copyright 2003, Alcatel Business Systems
* By Lars Ruoff <lars.ruoff@gmx.net>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __MCAST_STREAM_H__
#define __MCAST_STREAM_H__
#include <epan/tap.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define MAX_SPEED 200000
/* typedefs for sliding window and buffer size */
typedef struct buffer{
nstime_t *buff; /* packet times */
gint32 first; /* pointer to the first element */
gint32 last; /* pointer to the last element */
gint32 burstsize; /* current burst */
gint32 topburstsize; /* maximum burst in the refresh interval*/
gint32 count; /* packet counter */
gint32 burststatus; /* burst status */
gint32 numbursts; /* number of bursts */
gint32 buffusage; /* buffer usage */
gint32 buffstatus; /* buffer status */
gint32 numbuffalarms; /* number of alarms triggered by buffer underruns */
gint32 topbuffusage; /* top buffer usage in refresh interval */
double maxbw; /* Maximum bandwidth usage. Bits/s */
} t_buffer;
/* defines an mcast stream */
typedef struct _mcast_stream_info {
address src_addr;
guint16 src_port;
address dest_addr;
guint16 dest_port;
guint32 npackets;
double apackets;
guint32 total_bytes;
double average_bw; /* Bits/s */
guint32 first_frame_num; /* frame number of first frame */
/* start of recording (GMT) of this stream */
nstime_t start_abs; /* absolute stream start time */
nstime_t start_rel; /* stream start time relative to first packet in capture */
nstime_t stop_rel; /* stream stop time relative to first packet in capture */
guint16 vlan_id;
/*for the sliding window */
t_buffer element;
} mcast_stream_info_t;
typedef struct _mcaststream_tapinfo mcaststream_tapinfo_t;
typedef void (*mcaststream_tap_reset_cb)(mcaststream_tapinfo_t *tapinfo);
typedef void (*mcaststream_tap_draw_cb)(mcaststream_tapinfo_t *tapinfo);
/* structure that holds the information about all detected streams */
/* struct holding all information of the tap */
struct _mcaststream_tapinfo {
gpointer user_data; /* User data pointer */
mcaststream_tap_reset_cb tap_reset; /**< tap reset callback */
mcaststream_tap_draw_cb tap_draw; /**< tap draw callback */
GList* strinfo_list; /* list of mcast_stream_info_t */
guint32 npackets; /* total number of mcast packets of all streams */
mcast_stream_info_t* allstreams; /* structure holding information common for all streams */
gboolean is_registered; /* if the tap listener is currently registered or not */
};
extern gint32 mcast_stream_trigger;
extern gint32 mcast_stream_bufferalarm;
extern guint16 mcast_stream_burstint;
extern gint32 mcast_stream_emptyspeed;
extern gint32 mcast_stream_cumulemptyspeed;
/****************************************************************************/
/* INTERFACE */
/*
* Registers the mcast_streams tap listener (if not already done).
* From that point on, the Mcast streams list will be updated with every redissection.
* This function is also the entry point for the initialization routine of the tap system.
* So whenever mcast_stream.c is added to the list of WIRESHARK_TAP_SRCs, the tap will be registered on startup.
* If not, it will be registered on demand by the mcast_streams and mcast_analysis functions that need it.
*/
GString * register_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo);
/*
* Removes the mcast_streams tap listener (if not already done)
* From that point on, the Mcast streams list won't be updated any more.
*/
void remove_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo);
/*
* Cleans up memory of mcast streams tap.
*/
void mcaststream_reset(mcaststream_tapinfo_t *tapinfo);
/*
* Tap callback (tap_packet_cb) for Mcast stream tap updates. Useful if for
* some reason you can't register the default listener, but want to make use
* of the existing Mcast calculations.
*/
tap_packet_status mcaststream_packet(void *tapdata, packet_info *pinfo, epan_dissect_t *edt, const void *data, tap_flags_t flags);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __MCAST_STREAM_H__ */
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