#!/usr/bin/ksh # # CDDL HEADER START # # The contents of this file are subject to the terms of the # Common Development and Distribution License (the "License"). # You may not use this file except in compliance with the License. # # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE # or http://www.opensolaris.org/os/licensing. # See the License for the specific language governing permissions # and limitations under the License. # # When distributing Covered Code, include this CDDL HEADER in each # file and include the License file at usr/src/OPENSOLARIS.LICENSE. # If applicable, add the following below this CDDL HEADER, with the # fields enclosed by brackets "[]" replaced with your own identifying # information: Portions Copyright [yyyy] [name of copyright owner] # # CDDL HEADER END # # # Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. # # # Test {ip,tcp}:::{send,receive} of IPv4 TCP to local host. # # This may fail due to: # # 1. A change to the ip stack breaking expected probe behavior, # which is the reason we are testing. # 2. The lo0 interface missing or not up. # 3. The local ssh service is not online. # 4. An unlikely race causes the unlocked global send/receive # variables to be corrupted. # # This test performs a TCP connection and checks that at least the # following packet counts were traced: # # 3 x ip:::send (2 during the TCP handshake, then a FIN) # 3 x tcp:::send (2 during the TCP handshake, then a FIN) # 2 x ip:::receive (1 during the TCP handshake, then the FIN ACK) # 2 x tcp:::receive (1 during the TCP handshake, then the FIN ACK) # The actual count tested is 5 each way, since we are tracing both # source and destination events. # # For this test to work, we are assuming that the TCP handshake and # TCP close will enter the IP code path and not use tcp fusion. # if (( $# != 1 )); then print -u2 "expected one argument: " exit 2 fi dtrace=$1 local=127.0.0.1 tcpport=22 DIR=/var/tmp/dtest.$$ mkdir $DIR cd $DIR cat > test.pl <<-EOPERL use IO::Socket; my \$s = IO::Socket::INET->new( Proto => "tcp", PeerAddr => "$local", PeerPort => $tcpport, Timeout => 3); die "Could not connect to host $local port $tcpport" unless \$s; close \$s; EOPERL $dtrace -c '/usr/bin/perl test.pl' -qs /dev/stdin <ip_saddr == "$local" && args[2]->ip_daddr == "$local" && args[4]->ipv4_protocol == IPPROTO_TCP/ { ipsend++; } tcp:::send /args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/ { tcpsend++; } ip:::receive /args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" && args[4]->ipv4_protocol == IPPROTO_TCP/ { ipreceive++; } tcp:::receive /args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/ { tcpreceive++; } END { printf("Minimum TCP events seen\n\n"); printf("ip:::send - %s\n", ipsend >= 5 ? "yes" : "no"); printf("ip:::receive - %s\n", ipreceive >= 5 ? "yes" : "no"); printf("tcp:::send - %s\n", tcpsend >= 5 ? "yes" : "no"); printf("tcp:::receive - %s\n", tcpreceive >= 5 ? "yes" : "no"); } EODTRACE status=$? cd / /usr/bin/rm -rf $DIR exit $status