xref: /freebsd/share/dtrace/tcptrack (revision b3e7694832e81d7a904a10f525f8797b753bf0d3)
1*234aa446SGeorge V. Neville-Neil#!/usr/sbin/dtrace -s
2*234aa446SGeorge V. Neville-Neil/*
3*234aa446SGeorge V. Neville-Neil * Copyright (c) 2015 George V. Neville-Neil
4*234aa446SGeorge V. Neville-Neil * All rights reserved.
5*234aa446SGeorge V. Neville-Neil *
6*234aa446SGeorge V. Neville-Neil * Redistribution and use in source and binary forms, with or without
7*234aa446SGeorge V. Neville-Neil * modification, are permitted provided that the following conditions
8*234aa446SGeorge V. Neville-Neil * are met:
9*234aa446SGeorge V. Neville-Neil * 1. Redistributions of source code must retain the above copyright
10*234aa446SGeorge V. Neville-Neil *    notice, this list of conditions and the following disclaimer.
11*234aa446SGeorge V. Neville-Neil * 2. Redistributions in binary form must reproduce the above copyright
12*234aa446SGeorge V. Neville-Neil *    notice, this list of conditions and the following disclaimer in the
13*234aa446SGeorge V. Neville-Neil *    documentation and/or other materials provided with the distribution.
14*234aa446SGeorge V. Neville-Neil *
15*234aa446SGeorge V. Neville-Neil * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16*234aa446SGeorge V. Neville-Neil * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17*234aa446SGeorge V. Neville-Neil * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18*234aa446SGeorge V. Neville-Neil * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19*234aa446SGeorge V. Neville-Neil * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20*234aa446SGeorge V. Neville-Neil * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21*234aa446SGeorge V. Neville-Neil * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22*234aa446SGeorge V. Neville-Neil * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23*234aa446SGeorge V. Neville-Neil * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24*234aa446SGeorge V. Neville-Neil * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25*234aa446SGeorge V. Neville-Neil * SUCH DAMAGE.
26*234aa446SGeorge V. Neville-Neil *
27*234aa446SGeorge V. Neville-Neil * The tcptrack D script shows various information about TCP
28*234aa446SGeorge V. Neville-Neil * connections including acceptance and refusal of inbound and
29*234aa446SGeorge V. Neville-Neil * outbound connections as well as state changes.
30*234aa446SGeorge V. Neville-Neil *
31*234aa446SGeorge V. Neville-Neil * Usage: tcptrack
32*234aa446SGeorge V. Neville-Neil */
33*234aa446SGeorge V. Neville-Neil
34*234aa446SGeorge V. Neville-Neil#pragma D option quiet
35*234aa446SGeorge V. Neville-Neiltcp:kernel::accept-established
36*234aa446SGeorge V. Neville-Neil{
37*234aa446SGeorge V. Neville-Neil	printf("Accept connection from %s:%d\tto %s:%d\n",
38*234aa446SGeorge V. Neville-Neil		       args[2]->ip_saddr,
39*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_sport,
40*234aa446SGeorge V. Neville-Neil		       args[2]->ip_daddr,
41*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_dport);
42*234aa446SGeorge V. Neville-Neil
43*234aa446SGeorge V. Neville-Neil}
44*234aa446SGeorge V. Neville-Neil
45*234aa446SGeorge V. Neville-Neiltcp:kernel::accept-refused
46*234aa446SGeorge V. Neville-Neil{
47*234aa446SGeorge V. Neville-Neil	printf("Refused connection from %s:%d\tto %s:%d\n",
48*234aa446SGeorge V. Neville-Neil		       args[2]->ip_daddr,
49*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_dport,
50*234aa446SGeorge V. Neville-Neil		       args[2]->ip_saddr,
51*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_sport);
52*234aa446SGeorge V. Neville-Neil
53*234aa446SGeorge V. Neville-Neil}
54*234aa446SGeorge V. Neville-Neil
55*234aa446SGeorge V. Neville-Neiltcp:kernel::connect-established
56*234aa446SGeorge V. Neville-Neil{
57*234aa446SGeorge V. Neville-Neil	printf("Connection established to %s:%d from %s:%d\n",
58*234aa446SGeorge V. Neville-Neil		       args[2]->ip_saddr,
59*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_sport,
60*234aa446SGeorge V. Neville-Neil		       args[2]->ip_daddr,
61*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_dport);
62*234aa446SGeorge V. Neville-Neil
63*234aa446SGeorge V. Neville-Neil}
64*234aa446SGeorge V. Neville-Neil
65*234aa446SGeorge V. Neville-Neiltcp:kernel::connect-refused
66*234aa446SGeorge V. Neville-Neil{
67*234aa446SGeorge V. Neville-Neil	printf("Connection refused by %s:%d from %s:%d\n",
68*234aa446SGeorge V. Neville-Neil		       args[2]->ip_saddr,
69*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_sport,
70*234aa446SGeorge V. Neville-Neil		       args[2]->ip_daddr,
71*234aa446SGeorge V. Neville-Neil		       args[4]->tcp_dport);
72*234aa446SGeorge V. Neville-Neil}
73*234aa446SGeorge V. Neville-Neil
74*234aa446SGeorge V. Neville-Neiltcp:kernel::state-change
75*234aa446SGeorge V. Neville-Neil{
76*234aa446SGeorge V. Neville-Neil	newstate = args[3]->tcps_state;
77*234aa446SGeorge V. Neville-Neil	oldstate = args[5]->tcps_state;
78*234aa446SGeorge V. Neville-Neil	printf("State changed from %s\t\t%s\n", tcp_state_string[oldstate],
79*234aa446SGeorge V. Neville-Neil				     tcp_state_string[newstate]);
80*234aa446SGeorge V. Neville-Neil}
81*234aa446SGeorge V. Neville-Neil
82