name : drop_monitor_tests.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # This test is for checking drop monitor functionality. source lib.sh ret=0 # all tests in this script. Can be overridden with -t option TESTS=" sw_drops hw_drops " 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 setup_ns 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 cleanup_ns ${NS1} } sw_drops_test() { echo echo "Software drops test" setup local dir=$(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 # create netns first so we can get the namespace name setup_ns NS1 cleanup &> /dev/null trap cleanup EXIT IP="ip -netns ${NS1}" TC="tc -netns ${NS1}" DEVLINK="devlink -N ${NS1}" NS_EXEC="ip netns exec ${NS1}" 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