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