tst.ipv4localudp.ksh revision 210753
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:::{send,receive} of IPv4 UDP to a local address. 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. No physical network interface is plumbed and up. 35# 3. No other hosts on this subnet are reachable and listening on rpcbind. 36# 4. An unlikely race causes the unlocked global send/receive 37# variables to be corrupted. 38# 39# This test sends a UDP message using ping and checks that at least the 40# following counts were traced: 41# 42# 1 x ip:::send (UDP sent to ping's base UDP port) 43# 1 x udp:::send (UDP sent to ping's base UDP port) 44# 1 x ip:::receive (UDP received) 45# 46# No udp:::receive event is expected as the response ping -U elicits is 47# an ICMP PORT_UNREACHABLE response rather than a UDP packet, and locally 48# the echo request UDP packet only reaches IP, so the udp:::receive probe 49# is not triggered by it. 50# 51 52if (( $# != 1 )); then 53 print -u2 "expected one argument: <dtrace-path>" 54 exit 2 55fi 56 57dtrace=$1 58local=127.0.0.1 59 60$dtrace -c "/usr/sbin/ping -U $local" -qs /dev/stdin <<EOF | grep -v 'is alive' 61BEGIN 62{ 63 ipsend = udpsend = ipreceive = 0; 64} 65 66ip:::send 67/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" && 68 args[4]->ipv4_protocol == IPPROTO_UDP/ 69{ 70 ipsend++; 71} 72 73udp:::send 74/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/ 75{ 76 udpsend++; 77} 78 79ip:::receive 80/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" && 81 args[4]->ipv4_protocol == IPPROTO_UDP/ 82{ 83 ipreceive++; 84} 85 86END 87{ 88 printf("Minimum UDP events seen\n\n"); 89 printf("ip:::send - %s\n", ipsend >= 1 ? "yes" : "no"); 90 printf("ip:::receive - %s\n", ipreceive >= 1 ? "yes" : "no"); 91 printf("udp:::send - %s\n", udpsend >= 1 ? "yes" : "no"); 92} 93EOF 94