1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4# This test is for checking drop monitor functionality. 5source lib.sh 6ret=0 7 8# all tests in this script. Can be overridden with -t option 9TESTS=" 10 sw_drops 11 hw_drops 12" 13 14NETDEVSIM_PATH=/sys/bus/netdevsim/ 15DEV_ADDR=1337 16DEV=netdevsim${DEV_ADDR} 17DEVLINK_DEV=netdevsim/${DEV} 18 19log_test() 20{ 21 local rc=$1 22 local expected=$2 23 local msg="$3" 24 25 if [ ${rc} -eq ${expected} ]; then 26 printf " TEST: %-60s [ OK ]\n" "${msg}" 27 nsuccess=$((nsuccess+1)) 28 else 29 ret=1 30 nfail=$((nfail+1)) 31 printf " TEST: %-60s [FAIL]\n" "${msg}" 32 fi 33} 34 35setup() 36{ 37 modprobe netdevsim &> /dev/null 38 39 set -e 40 setup_ns NS1 41 $IP link add dummy10 up type dummy 42 43 $NS_EXEC echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device 44 udevadm settle 45 local netdev=$($NS_EXEC ls ${NETDEVSIM_PATH}/devices/${DEV}/net/) 46 $IP link set dev $netdev up 47 48 set +e 49} 50 51cleanup() 52{ 53 $NS_EXEC echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device 54 cleanup_ns ${NS1} 55} 56 57sw_drops_test() 58{ 59 echo 60 echo "Software drops test" 61 62 setup 63 64 local dir=$(mktemp -d) 65 66 $TC qdisc add dev dummy10 clsact 67 $TC filter add dev dummy10 egress pref 1 handle 101 proto ip \ 68 flower dst_ip 192.0.2.10 action drop 69 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.pcap 74 (( $(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.pcap 79 80 { kill %% && wait %%; } 2>/dev/null 81 timeout 5 dwdump -o sw -w ${dir}/packets.pcap 82 (( $(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 $dir 87 88 cleanup 89} 90 91hw_drops_test() 92{ 93 echo 94 echo "Hardware drops test" 95 96 setup 97 98 local dir=$(mktemp -d) 99 100 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action trap 101 timeout 5 dwdump -o hw -w ${dir}/packets.pcap 102 (( $(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.pcap 108 109 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action drop 110 timeout 5 dwdump -o hw -w ${dir}/packets.pcap 111 (( $(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 $dir 117 118 cleanup 119} 120 121################################################################################ 122# usage 123 124usage() 125{ 126 cat <<EOF 127usage: ${0##*/} OPTS 128 129 -t <test> Test(s) to run (default: all) 130 (options: $TESTS) 131EOF 132} 133 134################################################################################ 135# main 136 137while getopts ":t:h" opt; do 138 case $opt in 139 t) TESTS=$OPTARG;; 140 h) usage; exit 0;; 141 *) usage; exit 1;; 142 esac 143done 144 145if [ "$(id -u)" -ne 0 ];then 146 echo "SKIP: Need root privileges" 147 exit $ksft_skip; 148fi 149 150if [ ! -x "$(command -v ip)" ]; then 151 echo "SKIP: Could not run test without ip tool" 152 exit $ksft_skip 153fi 154 155if [ ! -x "$(command -v devlink)" ]; then 156 echo "SKIP: Could not run test without devlink tool" 157 exit $ksft_skip 158fi 159 160if [ ! -x "$(command -v tshark)" ]; then 161 echo "SKIP: Could not run test without tshark tool" 162 exit $ksft_skip 163fi 164 165if [ ! -x "$(command -v dwdump)" ]; then 166 echo "SKIP: Could not run test without dwdump tool" 167 exit $ksft_skip 168fi 169 170if [ ! -x "$(command -v udevadm)" ]; then 171 echo "SKIP: Could not run test without udevadm tool" 172 exit $ksft_skip 173fi 174 175if [ ! -x "$(command -v timeout)" ]; then 176 echo "SKIP: Could not run test without timeout tool" 177 exit $ksft_skip 178fi 179 180if [ ! -x "$(command -v mausezahn)" ]; then 181 echo "SKIP: Could not run test without mausezahn tool" 182 exit $ksft_skip 183fi 184 185tshark -G fields 2> /dev/null | grep -q net_dm 186if [ $? -ne 0 ]; then 187 echo "SKIP: tshark too old, missing net_dm dissector" 188 exit $ksft_skip 189fi 190 191# create netns first so we can get the namespace name 192setup_ns NS1 193cleanup &> /dev/null 194trap cleanup EXIT 195 196IP="ip -netns ${NS1}" 197TC="tc -netns ${NS1}" 198DEVLINK="devlink -N ${NS1}" 199NS_EXEC="ip netns exec ${NS1}" 200 201for t in $TESTS 202do 203 case $t in 204 sw_drops|sw) sw_drops_test;; 205 hw_drops|hw) hw_drops_test;; 206 207 help) echo "Test names: $TESTS"; exit 0;; 208 esac 209done 210 211if [ "$TESTS" != "none" ]; then 212 printf "\nTests passed: %3d\n" ${nsuccess} 213 printf "Tests failed: %3d\n" ${nfail} 214fi 215 216exit $ret 217