1#!/usr/bin/ksh
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23#
24# Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
25#
26
27#
28# Test {ip,tcp}:::{send,receive} of IPv4 TCP to local host.
29#
30# This may fail due to:
31#
32# 1. A change to the ip stack breaking expected probe behavior,
33#    which is the reason we are testing.
34# 2. The lo0 interface missing or not up.
35# 3. The local ssh service is not online.
36# 4. An unlikely race causes the unlocked global send/receive
37#    variables to be corrupted.
38#
39# This test performs a TCP connection and checks that at least the
40# following packet counts were traced:
41#
42# 3 x ip:::send (2 during the TCP handshake, then a FIN)
43# 3 x tcp:::send (2 during the TCP handshake, then a FIN)
44# 2 x ip:::receive (1 during the TCP handshake, then the FIN ACK)
45# 2 x tcp:::receive (1 during the TCP handshake, then the FIN ACK)
46
47# The actual count tested is 5 each way, since we are tracing both
48# source and destination events.
49#
50# For this test to work, we are assuming that the TCP handshake and
51# TCP close will enter the IP code path and not use tcp fusion.
52#
53
54if (( $# != 1 )); then
55	print -u2 "expected one argument: <dtrace-path>"
56	exit 2
57fi
58
59dtrace=$1
60local=127.0.0.1
61tcpport=22
62DIR=/var/tmp/dtest.$$
63
64mkdir $DIR
65cd $DIR
66
67cat > test.pl <<-EOPERL
68	use IO::Socket;
69	my \$s = IO::Socket::INET->new(
70	    Proto => "tcp",
71	    PeerAddr => "$local",
72	    PeerPort => $tcpport,
73	    Timeout => 3);
74	die "Could not connect to host $local port $tcpport" unless \$s;
75	close \$s;
76	#
77	# Sleep for one second to assure that our D script has ample time to
78	# see all events induced by the close
79	#
80	sleep 1;
81EOPERL
82
83$dtrace -c 'perl test.pl' -qs /dev/stdin <<EODTRACE
84BEGIN
85{
86	ipsend = tcpsend = ipreceive = tcpreceive = 0;
87}
88
89ip:::send
90/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" &&
91    args[4]->ipv4_protocol == IPPROTO_TCP/
92{
93	ipsend++;
94}
95
96tcp:::send
97/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/
98{
99	tcpsend++;
100}
101
102ip:::receive
103/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" &&
104    args[4]->ipv4_protocol == IPPROTO_TCP/
105{
106	ipreceive++;
107}
108
109tcp:::receive
110/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/
111{
112	tcpreceive++;
113}
114
115END
116{
117	printf("Minimum TCP events seen\n\n");
118	printf("ip:::send - %s\n", ipsend >= 5 ? "yes" : "no");
119	printf("ip:::receive - %s\n", ipreceive >= 5 ? "yes" : "no");
120	printf("tcp:::send - %s\n", tcpsend >= 5 ? "yes" : "no");
121	printf("tcp:::receive - %s\n", tcpreceive >= 5 ? "yes" : "no");
122}
123EODTRACE
124
125status=$?
126
127cd /
128/usr/bin/rm -rf $DIR
129
130exit $status
131