ui/tap-tcp-stream.h

   1 /* tap-tcp-stream.h
   2  * TCP stream statistics
   3  * Originally from tcp_graph.c by Pavel Mores <pvl@uh.cz>
   4  * Win32 port:  rwh@unifiedtech.com
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #ifndef __TAP_TCP_STREAM_H__
  28 #define __TAP_TCP_STREAM_H__
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif /* __cplusplus */
  33
  34 typedef enum tcp_graph_type_ {
  35     GRAPH_TSEQ_STEVENS,
  36     GRAPH_TSEQ_TCPTRACE,
  37     GRAPH_THROUGHPUT,
  38     GRAPH_RTT,
  39     GRAPH_WSCALE
  40 } tcp_graph_type;
  41
  42 struct segment {
  43     struct segment *next;
  44     guint32 num;
  45     guint32 rel_secs;
  46     guint32 rel_usecs;
  47     /* Currently unused.
  48     guint32 abs_secs;
  49     guint32 abs_usecs;
  50     */
  51
  52     guint32 th_seq;
  53     guint32 th_ack;
  54     guint16 th_flags;
  55     guint32 th_win;   /* make it 32 bits so we can handle some scaling */
  56     guint32 th_seglen;
  57     guint16 th_sport;
  58     guint16 th_dport;
  59     address ip_src;
  60     address ip_dst;
  61
  62     guint8  num_sack_ranges;
  63     guint32 sack_left_edge[MAX_TCP_SACK_RANGES];
  64     guint32 sack_right_edge[MAX_TCP_SACK_RANGES];
  65 };
  66
  67 struct tcp_graph {
  68     tcp_graph_type   type;
  69
  70     /* The stream this graph will show */
  71     address          src_address;
  72     guint16          src_port;
  73     address          dst_address;
  74     guint16          dst_port;
  75     guint32          stream;
  76     /* Should this be a map or tree instead? */
  77     struct segment  *segments;
  78 };
  79
  80 /** Fill in the segment list for a TCP graph
  81  *
  82  * @param cf Capture file to scan
  83  * @param tg TCP graph. A valid stream must be set. If either the source or
  84  *        destination address types are AT_NONE the address and port
  85  *        information will be filled in using the first packet in the
  86  *        specified stream.
  87  * @param stream_known If FALSE, session information will be filled in using
  88  *        the currently selected packet. If FALSE, session information will
  89  *        be matched against tg.
  90  */
  91 void graph_segment_list_get(capture_file *cf, struct tcp_graph *tg, gboolean stream_known );
  92 void graph_segment_list_free(struct tcp_graph * );
  93
  94 /* for compare_headers() */
  95 /* segment went the same direction as the currently selected one */
  96 #define COMPARE_CURR_DIR    0
  97 #define COMPARE_ANY_DIR     1
  98
  99 int compare_headers(address *saddr1, address *daddr1, guint16 sport1, guint16 dport1, const address *saddr2, const address *daddr2, guint16 sport2, guint16 dport2, int dir);
 100
 101 int get_num_dsegs(struct tcp_graph * );
 102 int get_num_acks(struct tcp_graph *, int * );
 103
 104 struct tcpheader *select_tcpip_session(capture_file *, struct segment * );
 105
 106 /* This is used by rtt module only */
 107 struct unack {
 108     struct unack *next;
 109     double        time;
 110     unsigned int  seqno;
 111 };
 112
 113 int rtt_is_retrans(struct unack * , unsigned int );
 114 struct unack *rtt_get_new_unack(double , unsigned int );
 115 void rtt_put_unack_on_list(struct unack ** , struct unack * );
 116 void rtt_delete_unack_from_list(struct unack ** , struct unack * );
 117
 118
 119 #ifdef __cplusplus
 120 }
 121 #endif /* __cplusplus */
 122
 123 #endif /* __TAP_TCP_STREAM_H__ */
 124
 125 /*
 126  * Editor modelines
 127  *
 128  * Local Variables:
 129  * c-basic-offset: 4
 130  * tab-width: 8
 131  * indent-tabs-mode: nil
 132  * End:
 133  *
 134  * ex: set shiftwidth=4 tabstop=8 expandtab:
 135  * :indentSize=4:tabSize=8:noTabs=true:
 136  */