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#!/bin/bash
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
#
# Copyright (c) 2016 by Delphix. All rights reserved.
#
#
# This test attempts to stress the interaction between threads adding
# and deleting datalinks, and those reading kstats associated with
# those datalinks.
#
RUNFILE=$(mktemp)
linkname1=laverne0
linkname2=shirley0
duration=20 # seconds
#
# Delete any potential datalinks left behind by the etherstub function.
#
function cleanup
{
rm -f $RUNFILE
}
function etherstub
{
while [[ -e $RUNFILE ]]; do
dladm create-etherstub -t $linkname1
dladm rename-link $linkname1 $linkname2
dladm delete-etherstub -t $linkname2
done
}
function readkstat
{
local linkname=$1
while [[ -e $RUNFILE ]]; do
kstat link:0:$linkname &>/dev/null
done
}
trap "cleanup; exit" SIGHUP SIGINT SIGTERM
etherstub &
readkstat $linkname1 &
readkstat $linkname1 &
readkstat $linkname2 &
readkstat $linkname2 &
sleep $duration
cleanup
wait
exit 0
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