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Diffstat (limited to 'ui/mcast_stream.h')
| -rw-r--r-- | ui/mcast_stream.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/ui/mcast_stream.h b/ui/mcast_stream.h new file mode 100644 index 0000000..fc5c598 --- /dev/null +++ b/ui/mcast_stream.h @@ -0,0 +1,129 @@ +/** @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__ */ |