Author: gnn
Date: Sat Mar 7 19:16:09 2015
New Revision: 279739
URL: https://svnweb.freebsd.org/changeset/base/279739
Log:
Add a more complex TCP tracking script, which shows connections and
accepts as well as state transitions.
Added:
head/share/dtrace/tcptrack (contents, props changed)
Modified:
head/share/dtrace/Makefile
Modified: head/share/dtrace/Makefile
==============================================================================
--- head/share/dtrace/Makefile Sat Mar 7 19:14:01 2015 (r279738)
+++ head/share/dtrace/Makefile Sat Mar 7 19:16:09 2015 (r279739)
@@ -16,7 +16,8 @@ SCRIPTS= disklatency \
disklatencycmd \
hotopen \
nfsclienttime \
- tcpstate
+ tcpstate \
+ tcptrack
SCRIPTSDIR= ${SHAREDIR}/dtrace
Added: head/share/dtrace/tcptrack
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/share/dtrace/tcptrack Sat Mar 7 19:16:09 2015 (r279739)
@@ -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]);
+}
+
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