217 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03 4# This test is for checking drop monitor functionality.5source lib.sh6ret=07 8# all tests in this script. Can be overridden with -t option9TESTS="10 sw_drops11 hw_drops12"13 14NETDEVSIM_PATH=/sys/bus/netdevsim/15DEV_ADDR=133716DEV=netdevsim${DEV_ADDR}17DEVLINK_DEV=netdevsim/${DEV}18 19log_test()20{21 local rc=$122 local expected=$223 local msg="$3"24 25 if [ ${rc} -eq ${expected} ]; then26 printf " TEST: %-60s [ OK ]\n" "${msg}"27 nsuccess=$((nsuccess+1))28 else29 ret=130 nfail=$((nfail+1))31 printf " TEST: %-60s [FAIL]\n" "${msg}"32 fi33}34 35setup()36{37 modprobe netdevsim &> /dev/null38 39 set -e40 setup_ns NS141 $IP link add dummy10 up type dummy42 43 $NS_EXEC echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device44 udevadm settle45 local netdev=$($NS_EXEC ls ${NETDEVSIM_PATH}/devices/${DEV}/net/)46 $IP link set dev $netdev up47 48 set +e49}50 51cleanup()52{53 $NS_EXEC echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device54 cleanup_ns ${NS1}55}56 57sw_drops_test()58{59 echo60 echo "Software drops test"61 62 setup63 64 local dir=$(mktemp -d)65 66 $TC qdisc add dev dummy10 clsact67 $TC filter add dev dummy10 egress pref 1 handle 101 proto ip \68 flower dst_ip 192.0.2.10 action drop69 70 $NS_EXEC mausezahn dummy10 -a 00:11:22:33:44:55 -b 00:aa:bb:cc:dd:ee \71 -A 192.0.2.1 -B 192.0.2.10 -t udp sp=12345,dp=54321 -c 0 -q \72 -d 100msec &73 timeout 5 dwdump -o sw -w ${dir}/packets.pcap74 (( $(tshark -r ${dir}/packets.pcap \75 -Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) != 0))76 log_test $? 0 "Capturing active software drops"77 78 rm ${dir}/packets.pcap79 80 { kill %% && wait %%; } 2>/dev/null81 timeout 5 dwdump -o sw -w ${dir}/packets.pcap82 (( $(tshark -r ${dir}/packets.pcap \83 -Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) == 0))84 log_test $? 0 "Capturing inactive software drops"85 86 rm -r $dir87 88 cleanup89}90 91hw_drops_test()92{93 echo94 echo "Hardware drops test"95 96 setup97 98 local dir=$(mktemp -d)99 100 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action trap101 timeout 5 dwdump -o hw -w ${dir}/packets.pcap102 (( $(tshark -r ${dir}/packets.pcap \103 -Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \104 | wc -l) != 0))105 log_test $? 0 "Capturing active hardware drops"106 107 rm ${dir}/packets.pcap108 109 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action drop110 timeout 5 dwdump -o hw -w ${dir}/packets.pcap111 (( $(tshark -r ${dir}/packets.pcap \112 -Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \113 | wc -l) == 0))114 log_test $? 0 "Capturing inactive hardware drops"115 116 rm -r $dir117 118 cleanup119}120 121################################################################################122# usage123 124usage()125{126 cat <<EOF127usage: ${0##*/} OPTS128 129 -t <test> Test(s) to run (default: all)130 (options: $TESTS)131EOF132}133 134################################################################################135# main136 137while getopts ":t:h" opt; do138 case $opt in139 t) TESTS=$OPTARG;;140 h) usage; exit 0;;141 *) usage; exit 1;;142 esac143done144 145if [ "$(id -u)" -ne 0 ];then146 echo "SKIP: Need root privileges"147 exit $ksft_skip;148fi149 150if [ ! -x "$(command -v ip)" ]; then151 echo "SKIP: Could not run test without ip tool"152 exit $ksft_skip153fi154 155if [ ! -x "$(command -v devlink)" ]; then156 echo "SKIP: Could not run test without devlink tool"157 exit $ksft_skip158fi159 160if [ ! -x "$(command -v tshark)" ]; then161 echo "SKIP: Could not run test without tshark tool"162 exit $ksft_skip163fi164 165if [ ! -x "$(command -v dwdump)" ]; then166 echo "SKIP: Could not run test without dwdump tool"167 exit $ksft_skip168fi169 170if [ ! -x "$(command -v udevadm)" ]; then171 echo "SKIP: Could not run test without udevadm tool"172 exit $ksft_skip173fi174 175if [ ! -x "$(command -v timeout)" ]; then176 echo "SKIP: Could not run test without timeout tool"177 exit $ksft_skip178fi179 180if [ ! -x "$(command -v mausezahn)" ]; then181 echo "SKIP: Could not run test without mausezahn tool"182 exit $ksft_skip183fi184 185tshark -G fields 2> /dev/null | grep -q net_dm186if [ $? -ne 0 ]; then187 echo "SKIP: tshark too old, missing net_dm dissector"188 exit $ksft_skip189fi190 191# create netns first so we can get the namespace name192setup_ns NS1193cleanup &> /dev/null194trap cleanup EXIT195 196IP="ip -netns ${NS1}"197TC="tc -netns ${NS1}"198DEVLINK="devlink -N ${NS1}"199NS_EXEC="ip netns exec ${NS1}"200 201for t in $TESTS202do203 case $t in204 sw_drops|sw) sw_drops_test;;205 hw_drops|hw) hw_drops_test;;206 207 help) echo "Test names: $TESTS"; exit 0;;208 esac209done210 211if [ "$TESTS" != "none" ]; then212 printf "\nTests passed: %3d\n" ${nsuccess}213 printf "Tests failed: %3d\n" ${nfail}214fi215 216exit $ret217