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 log_test_expected "$1" "$2" "$3" 22} 23 24setup() 25{ 26 modprobe netdevsim &> /dev/null 27 28 set -e 29 setup_ns NS1 30 $IP link add dummy10 up type dummy 31 32 $NS_EXEC echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device 33 udevadm settle 34 local netdev=$($NS_EXEC ls ${NETDEVSIM_PATH}/devices/${DEV}/net/) 35 $IP link set dev $netdev up 36 37 set +e 38} 39 40cleanup() 41{ 42 $NS_EXEC echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device 43 cleanup_ns ${NS1} 44} 45 46sw_drops_test() 47{ 48 echo 49 echo "Software drops test" 50 51 setup 52 53 local dir=$(mktemp -d) 54 55 $TC qdisc add dev dummy10 clsact 56 $TC filter add dev dummy10 egress pref 1 handle 101 proto ip \ 57 flower dst_ip 192.0.2.10 action drop 58 59 $NS_EXEC mausezahn dummy10 -a 00:11:22:33:44:55 -b 00:aa:bb:cc:dd:ee \ 60 -A 192.0.2.1 -B 192.0.2.10 -t udp sp=12345,dp=54321 -c 0 -q \ 61 -d 100msec & 62 timeout 5 dwdump -o sw -w ${dir}/packets.pcap 63 (( $(tshark -r ${dir}/packets.pcap \ 64 -Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) != 0)) 65 log_test $? 0 "Capturing active software drops" 66 67 rm ${dir}/packets.pcap 68 69 kill_process %% 70 timeout 5 dwdump -o sw -w ${dir}/packets.pcap 71 (( $(tshark -r ${dir}/packets.pcap \ 72 -Y 'ip.dst == 192.0.2.10' 2> /dev/null | wc -l) == 0)) 73 log_test $? 0 "Capturing inactive software drops" 74 75 rm -r $dir 76 77 cleanup 78} 79 80hw_drops_test() 81{ 82 echo 83 echo "Hardware drops test" 84 85 setup 86 87 local dir=$(mktemp -d) 88 89 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action trap 90 timeout 5 dwdump -o hw -w ${dir}/packets.pcap 91 (( $(tshark -r ${dir}/packets.pcap \ 92 -Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \ 93 | wc -l) != 0)) 94 log_test $? 0 "Capturing active hardware drops" 95 96 rm ${dir}/packets.pcap 97 98 $DEVLINK trap set $DEVLINK_DEV trap blackhole_route action drop 99 timeout 5 dwdump -o hw -w ${dir}/packets.pcap 100 (( $(tshark -r ${dir}/packets.pcap \ 101 -Y 'net_dm.hw_trap_name== blackhole_route' 2> /dev/null \ 102 | wc -l) == 0)) 103 log_test $? 0 "Capturing inactive hardware drops" 104 105 rm -r $dir 106 107 cleanup 108} 109 110################################################################################ 111# usage 112 113usage() 114{ 115 cat <<EOF 116usage: ${0##*/} OPTS 117 118 -t <test> Test(s) to run (default: all) 119 (options: $TESTS) 120EOF 121} 122 123################################################################################ 124# main 125 126while getopts ":t:h" opt; do 127 case $opt in 128 t) TESTS=$OPTARG;; 129 h) usage; exit 0;; 130 *) usage; exit 1;; 131 esac 132done 133 134if [ "$(id -u)" -ne 0 ];then 135 echo "SKIP: Need root privileges" 136 exit $ksft_skip; 137fi 138 139if [ ! -x "$(command -v ip)" ]; then 140 echo "SKIP: Could not run test without ip tool" 141 exit $ksft_skip 142fi 143 144if [ ! -x "$(command -v devlink)" ]; then 145 echo "SKIP: Could not run test without devlink tool" 146 exit $ksft_skip 147fi 148 149if [ ! -x "$(command -v tshark)" ]; then 150 echo "SKIP: Could not run test without tshark tool" 151 exit $ksft_skip 152fi 153 154if [ ! -x "$(command -v dwdump)" ]; then 155 echo "SKIP: Could not run test without dwdump tool" 156 exit $ksft_skip 157fi 158 159if [ ! -x "$(command -v udevadm)" ]; then 160 echo "SKIP: Could not run test without udevadm tool" 161 exit $ksft_skip 162fi 163 164if [ ! -x "$(command -v timeout)" ]; then 165 echo "SKIP: Could not run test without timeout tool" 166 exit $ksft_skip 167fi 168 169if [ ! -x "$(command -v mausezahn)" ]; then 170 echo "SKIP: Could not run test without mausezahn tool" 171 exit $ksft_skip 172fi 173 174tshark -G fields 2> /dev/null | grep -q net_dm 175if [ $? -ne 0 ]; then 176 echo "SKIP: tshark too old, missing net_dm dissector" 177 exit $ksft_skip 178fi 179 180# create netns first so we can get the namespace name 181setup_ns NS1 182cleanup &> /dev/null 183trap cleanup EXIT 184 185IP="ip -netns ${NS1}" 186TC="tc -netns ${NS1}" 187DEVLINK="devlink -N ${NS1}" 188NS_EXEC="ip netns exec ${NS1}" 189 190for t in $TESTS 191do 192 case $t in 193 sw_drops|sw) sw_drops_test;; 194 hw_drops|hw) hw_drops_test;; 195 196 help) echo "Test names: $TESTS"; exit 0;; 197 esac 198done 199 200if [ "$TESTS" != "none" ]; then 201 printf "\nTests passed: %3d\n" ${nsuccess} 202 printf "Tests failed: %3d\n" ${nfail} 203fi 204 205exit $ret 206