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Add a more complex TCP tracking script, which shows connections and

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accepts as well as state transitions.
This commit is contained in:
George V. Neville-Neil 2015-03-07 19:16:09 +00:00
parent 411443334b
commit 234aa44656
2 changed files with 85 additions and 1 deletions
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3
share/dtrace/Makefile
View File

@ -16,7 +16,8 @@ SCRIPTS= disklatency \
disklatencycmd \
hotopen \
nfsclienttime \
tcpstate
tcpstate \
tcptrack
SCRIPTSDIR= ${SHAREDIR}/dtrace

83
share/dtrace/tcptrack Executable file
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@ -0,0 +1,83 @@
#!/usr/sbin/dtrace -s
/*
* Copyright (c) 2015 George V. Neville-Neil
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
* The tcptrack D script shows various information about TCP
* connections including acceptance and refusal of inbound and
* outbound connections as well as state changes.
*
* Usage: tcptrack
*/
#pragma D option quiet
tcp:kernel::accept-established
{
printf("Accept connection from %s:%d\tto %s:%d\n",
args[2]->ip_saddr,
args[4]->tcp_sport,
args[2]->ip_daddr,
args[4]->tcp_dport);
}
tcp:kernel::accept-refused
{
printf("Refused connection from %s:%d\tto %s:%d\n",
args[2]->ip_daddr,
args[4]->tcp_dport,
args[2]->ip_saddr,
args[4]->tcp_sport);
}
tcp:kernel::connect-established
{
printf("Connection established to %s:%d from %s:%d\n",
args[2]->ip_saddr,
args[4]->tcp_sport,
args[2]->ip_daddr,
args[4]->tcp_dport);
}
tcp:kernel::connect-refused
{
printf("Connection refused by %s:%d from %s:%d\n",
args[2]->ip_saddr,
args[4]->tcp_sport,
args[2]->ip_daddr,
args[4]->tcp_dport);
}
tcp:kernel::state-change
{
newstate = args[3]->tcps_state;
oldstate = args[5]->tcps_state;
printf("State changed from %s\t\t%s\n", tcp_state_string[oldstate],
tcp_state_string[newstate]);
}