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|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# This test is for checking drop monitor functionality.
ret=0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
# all tests in this script. Can be overridden with -t option
TESTS="
sw_drops
hw_drops
"
IP="ip -netns ns1"
TC="tc -netns ns1"
DEVLINK="devlink -N ns1"
NS_EXEC="ip netns exec ns1"
NETDEVSIM_PATH=/sys/bus/netdevsim/
DEV_ADDR=1337
DEV=netdevsim${DEV_ADDR}
DEVLINK_DEV=netdevsim/${DEV}
log_test()
{
local rc=$1
local expected=$2
local msg="$3"
if [ ${rc} -eq ${expected} ]; then
printf " TEST: %-60s [ OK ]\n" "${msg}"
nsuccess=$((nsuccess+1))
else
ret=1
nfail=$((nfail+1))
printf " TEST: %-60s [FAIL]\n" "${msg}"
fi
}
setup()
{
modprobe netdevsim &> /dev/null
set -e
ip netns add ns1
$IP link add dummy10 up type dummy
$NS_EXEC echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
udevadm settle
local netdev=$($NS_EXEC ls ${NETDEVSIM_PATH}/devices/${DEV}/net/)
$IP link set dev $netdev up
set +e
}
cleanup()
{
$NS_EXEC echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
ip netns del ns1
}
sw_drops_test()
{
echo
echo "Software drops test"
setup
local dir=$(mktemp -d)
$TC qdisc add dev dummy10 clsact
$TC filter add dev dummy10 egress pref 1 handle 101 proto ip \
flower dst_ip 192.0.2.10 action drop
$NS_EXEC mausezahn dummy10 -a 00:11:22:33:44:55 -b 00:aa:bb:cc:dd:ee \
-A 192.0.2.1 -B 192.0.2.10 -t udp sp=12345,dp=54321 -c 0 -q \
-d 100msec &
timeout 5 dwdump -o sw -w ${dir}/packets.pcap
(( $(tshark -r ${dir}/packets.pcap \
-Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) != 0))
log_test $? 0 "Capturing active software drops"
rm ${dir}/packets.pcap
{ kill %% && wait %%; } 2>/dev/null
timeout 5 dwdump -o sw -w ${dir}/packets.pcap
(( $(tshark -r ${dir}/packets.pcap \
-Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) == 0))
log_test $? 0 "Capturing inactive software drops"
rm -r $dir
cleanup
}
hw_drops_test()
{
echo
echo "Hardware drops test"
setup
local dir=$(mktemp -d)
$DEVLINK trap set $DEVLINK_DEV trap blackhole_route action trap
timeout 5 dwdump -o hw -w ${dir}/packets.pcap
(( $(tshark -r ${dir}/packets.pcap \
-Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \
| wc -l) != 0))
log_test $? 0 "Capturing active hardware drops"
rm ${dir}/packets.pcap
$DEVLINK trap set $DEVLINK_DEV trap blackhole_route action drop
timeout 5 dwdump -o hw -w ${dir}/packets.pcap
(( $(tshark -r ${dir}/packets.pcap \
-Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \
| wc -l) == 0))
log_test $? 0 "Capturing inactive hardware drops"
rm -r $dir
cleanup
}
################################################################################
# usage
usage()
{
cat <<EOF
usage: ${0##*/} OPTS
-t <test> Test(s) to run (default: all)
(options: $TESTS)
EOF
}
################################################################################
# main
while getopts ":t:h" opt; do
case $opt in
t) TESTS=$OPTARG;;
h) usage; exit 0;;
*) usage; exit 1;;
esac
done
if [ "$(id -u)" -ne 0 ];then
echo "SKIP: Need root privileges"
exit $ksft_skip;
fi
if [ ! -x "$(command -v ip)" ]; then
echo "SKIP: Could not run test without ip tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v devlink)" ]; then
echo "SKIP: Could not run test without devlink tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v tshark)" ]; then
echo "SKIP: Could not run test without tshark tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v dwdump)" ]; then
echo "SKIP: Could not run test without dwdump tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v udevadm)" ]; then
echo "SKIP: Could not run test without udevadm tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v timeout)" ]; then
echo "SKIP: Could not run test without timeout tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v mausezahn)" ]; then
echo "SKIP: Could not run test without mausezahn tool"
exit $ksft_skip
fi
tshark -G fields 2> /dev/null | grep -q net_dm
if [ $? -ne 0 ]; then
echo "SKIP: tshark too old, missing net_dm dissector"
exit $ksft_skip
fi
# start clean
cleanup &> /dev/null
for t in $TESTS
do
case $t in
sw_drops|sw) sw_drops_test;;
hw_drops|hw) hw_drops_test;;
help) echo "Test names: $TESTS"; exit 0;;
esac
done
if [ "$TESTS" != "none" ]; then
printf "\nTests passed: %3d\n" ${nsuccess}
printf "Tests failed: %3d\n" ${nfail}
fi
exit $ret
|
