1#!/bin/sh
2
3################################################################################
4##                                                                            ##
5## Copyright (c) International Business Machines  Corp., 2005                 ##
6##                                                                            ##
7## This program is free software;  you can redistribute it and#or modify      ##
8## it under the terms of the GNU General Public License as published by       ##
9## the Free Software Foundation; either version 2 of the License, or          ##
10## (at your option) any later version.                                        ##
11##                                                                            ##
12## This program is distributed in the hope that it will be useful, but        ##
13## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
14## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License   ##
15## for more details.                                                          ##
16##                                                                            ##
17## You should have received a copy of the GNU General Public License          ##
18## along with this program;  if not, write to the Free Software               ##
19## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA    ##
20##                                                                            ##
21##                                                                            ##
22################################################################################
23#
24# File:
25#   check_icmpv4_connectivity
26#
27# Description:
28#   Check the ICMPv4 connectivity from a interface to an IPv4 address
29#
30# Arguments:
31#   $1: source interface name
32#   $2: destination IPv4 address
33#
34# Returns:
35#   0: connectivity is good
36#   1: connectivity is someting wrong
37#
38# Author:
39#   Mitsuru Chinen <mitch@jp.ibm.com>
40#
41# History:
42#   Oct 19 2005 - Created (Mitsuru Chinen)
43#
44#-----------------------------------------------------------------------
45#Uncomment line below for debug output.
46#trace_logic=${trace_logic:-"set -x"}
47$trace_logic
48
49# The max number of ICMP echo request
50PING_MAX=10
51
52# Check the arguments
53if [ $# -ne 2 ]; then
54    echo "Usage: $0 source_interface_name destionation_ipv4_address" >&2
55    exit 1
56fi
57src_ifname=$1
58dst_ipv4addr=$2
59
60cnt=0
61while [ $cnt -lt $PING_MAX ]; do
62    cnt=`expr $cnt + 1`
63    ping -I $src_ifname -c 1 $dst_ipv4addr -w 1 > /dev/null 2>&1
64    if [ $? -eq 0 ]; then
65	exit 0
66    fi
67    sleep 1
68done
69
70exit 1
71