1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4BPF_FILE="../bpf/xdp_dummy.bpf.o" 5readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" 6readonly BASE=`basename $STATS` 7readonly SRC=2 8readonly DST=1 9readonly DST_NAT=100 10readonly NS_SRC=$BASE$SRC 11readonly NS_DST=$BASE$DST 12 13# "baremetal" network used for raw UDP traffic 14readonly BM_NET_V4=192.168.1. 15readonly BM_NET_V6=2001:db8:: 16 17readonly CPUS=`nproc` 18ret=0 19 20cleanup() { 21 local ns 22 local jobs 23 readonly jobs="$(jobs -p)" 24 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null 25 rm -f $STATS 26 27 for ns in $NS_SRC $NS_DST; do 28 ip netns del $ns 2>/dev/null 29 done 30} 31 32trap cleanup EXIT 33 34create_ns() { 35 local ns 36 37 for ns in $NS_SRC $NS_DST; do 38 ip netns add $ns 39 ip -n $ns link set dev lo up 40 done 41 42 ip link add name veth$SRC type veth peer name veth$DST 43 44 for ns in $SRC $DST; do 45 ip link set dev veth$ns netns $BASE$ns up 46 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24 47 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad 48 done 49 echo "#kernel" > $BASE 50 chmod go-rw $BASE 51} 52 53__chk_flag() { 54 local msg="$1" 55 local target=$2 56 local expected=$3 57 local flagname=$4 58 59 local flag=`ip netns exec $BASE$target ethtool -k veth$target |\ 60 grep $flagname | awk '{print $2}'` 61 62 printf "%-60s" "$msg" 63 if [ "$flag" = "$expected" ]; then 64 echo " ok " 65 else 66 echo " fail - expected $expected found $flag" 67 ret=1 68 fi 69} 70 71chk_gro_flag() { 72 __chk_flag "$1" $2 $3 generic-receive-offload 73} 74 75chk_tso_flag() { 76 __chk_flag "$1" $2 $3 tcp-segmentation-offload 77} 78 79chk_channels() { 80 local msg="$1" 81 local target=$2 82 local rx=$3 83 local tx=$4 84 85 local dev=veth$target 86 87 local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\ 88 grep RX: | tail -n 1 | awk '{print $2}' ` 89 local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\ 90 grep TX: | tail -n 1 | awk '{print $2}'` 91 local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\ 92 grep Combined: | tail -n 1 | awk '{print $2}'` 93 94 printf "%-60s" "$msg" 95 if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then 96 echo " ok " 97 else 98 echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined" 99 fi 100} 101 102chk_gro() { 103 local msg="$1" 104 local expected=$2 105 106 ip netns exec $BASE$SRC ping -qc 1 $BM_NET_V4$DST >/dev/null 107 NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat -n 108 109 printf "%-60s" "$msg" 110 ip netns exec $BASE$DST ./udpgso_bench_rx -C 1000 -R 10 & 111 local spid=$! 112 sleep 0.1 113 114 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 13000 -S 1300 -M 1 -D $BM_NET_V4$DST 115 local retc=$? 116 wait $spid 117 local rets=$? 118 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 119 echo " fail client exit code $retc, server $rets" 120 ret=1 121 return 122 fi 123 124 local pkts=`NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat IpInReceives | \ 125 awk '{print $2}' | tail -n 1` 126 if [ "$pkts" = "$expected" ]; then 127 echo " ok " 128 else 129 echo " fail - got $pkts packets, expected $expected " 130 ret=1 131 fi 132} 133 134__change_channels() 135{ 136 local cur_cpu 137 local end=$1 138 local cur 139 local i 140 141 while true; do 142 printf -v cur '%(%s)T' 143 [ $cur -le $end ] || break 144 145 for i in `seq 1 $CPUS`; do 146 ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i 147 ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i 148 done 149 150 for i in `seq 1 $((CPUS - 1))`; do 151 cur_cpu=$((CPUS - $i)) 152 ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu 153 ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu 154 done 155 done 156} 157 158__send_data() { 159 local end=$1 160 161 while true; do 162 printf -v cur '%(%s)T' 163 [ $cur -le $end ] || break 164 165 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST 166 done 167} 168 169do_stress() { 170 local end 171 printf -v end '%(%s)T' 172 end=$((end + $STRESS)) 173 174 ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3 175 ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 176 177 ip netns exec $NS_DST ./udpgso_bench_rx & 178 local rx_pid=$! 179 180 echo "Running stress test for $STRESS seconds..." 181 __change_channels $end & 182 local ch_pid=$! 183 __send_data $end & 184 local data_pid_1=$! 185 __send_data $end & 186 local data_pid_2=$! 187 __send_data $end & 188 local data_pid_3=$! 189 __send_data $end & 190 local data_pid_4=$! 191 192 wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4 193 kill -9 $rx_pid 194 echo "done" 195 196 # restore previous setting 197 ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2 198 ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1 199} 200 201usage() { 202 echo "Usage: $0 [-h] [-s <seconds>]" 203 echo -e "\t-h: show this help" 204 echo -e "\t-s: run optional stress tests for the given amount of seconds" 205} 206 207STRESS=0 208while getopts "hs:" option; do 209 case "$option" in 210 "h") 211 usage $0 212 exit 0 213 ;; 214 "s") 215 STRESS=$OPTARG 216 ;; 217 esac 218done 219 220if [ ! -f ${BPF_FILE} ]; then 221 echo "Missing ${BPF_FILE}. Build bpf selftest first" 222 exit 1 223fi 224 225[ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped" 226[ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too" 227 228create_ns 229chk_gro_flag "default - gro flag" $SRC off 230chk_gro_flag " - peer gro flag" $DST off 231chk_tso_flag " - tso flag" $SRC on 232chk_tso_flag " - peer tso flag" $DST on 233chk_gro " - aggregation" 1 234ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 235chk_gro " - aggregation with TSO off" 10 236cleanup 237 238create_ns 239ip netns exec $NS_DST ethtool -K veth$DST gro on 240chk_gro_flag "with gro on - gro flag" $DST on 241chk_gro_flag " - peer gro flag" $SRC off 242chk_tso_flag " - tso flag" $SRC on 243chk_tso_flag " - peer tso flag" $DST on 244ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 245ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 246chk_gro " - aggregation with TSO off" 1 247cleanup 248 249create_ns 250chk_channels "default channels" $DST 1 1 251 252ip -n $NS_DST link set dev veth$DST down 253ip netns exec $NS_DST ethtool -K veth$DST gro on 254chk_gro_flag "with gro enabled on link down - gro flag" $DST on 255chk_gro_flag " - peer gro flag" $SRC off 256chk_tso_flag " - tso flag" $SRC on 257chk_tso_flag " - peer tso flag" $DST on 258ip -n $NS_DST link set dev veth$DST up 259ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 260ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 261chk_gro " - aggregation with TSO off" 1 262cleanup 263 264create_ns 265 266CUR_TX=1 267CUR_RX=1 268if [ $CPUS -gt 1 ]; then 269 ip netns exec $NS_DST ethtool -L veth$DST tx 2 270 chk_channels "setting tx channels" $DST 1 2 271 CUR_TX=2 272fi 273 274if [ $CPUS -gt 2 ]; then 275 ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 276 chk_channels "setting both rx and tx channels" $DST 3 3 277 CUR_RX=3 278 CUR_TX=3 279fi 280 281ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null 282chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX 283 284ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null 285chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX 286 287if [ $CPUS -gt 1 ]; then 288 # this also tests queues nr reduction 289 ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null 290 ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null 291 printf "%-60s" "bad setting: XDP with RX nr less than TX" 292 ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ 293 section xdp 2>/dev/null &&\ 294 echo "fail - set operation successful ?!?" || echo " ok " 295 296 # the following tests will run with multiple channels active 297 ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 298 ip netns exec $NS_DST ethtool -L veth$DST rx 2 299 ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ 300 section xdp 2>/dev/null 301 printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set" 302 ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\ 303 echo "fail - set operation successful ?!?" || echo " ok " 304 CUR_RX=2 305 CUR_TX=2 306fi 307 308if [ $CPUS -gt 2 ]; then 309 printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set" 310 ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\ 311 echo "fail - set operation successful ?!?" || echo " ok " 312 chk_channels "setting invalid channels nr" $DST 2 2 313fi 314 315ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp 2>/dev/null 316chk_gro_flag "with xdp attached - gro flag" $DST on 317chk_gro_flag " - peer gro flag" $SRC off 318chk_tso_flag " - tso flag" $SRC off 319chk_tso_flag " - peer tso flag" $DST on 320ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on 321chk_gro " - aggregation" 1 322 323 324ip -n $NS_DST link set dev veth$DST down 325ip -n $NS_SRC link set dev veth$SRC down 326chk_gro_flag " - after dev off, flag" $DST on 327chk_gro_flag " - peer flag" $SRC off 328 329ip netns exec $NS_DST ethtool -K veth$DST gro on 330ip -n $NS_DST link set dev veth$DST xdp off 331chk_gro_flag " - after gro on xdp off, gro flag" $DST on 332chk_gro_flag " - peer gro flag" $SRC off 333chk_tso_flag " - tso flag" $SRC on 334chk_tso_flag " - peer tso flag" $DST on 335 336if [ $CPUS -gt 1 ]; then 337 ip netns exec $NS_DST ethtool -L veth$DST tx 1 338 chk_channels "decreasing tx channels with device down" $DST 2 1 339fi 340 341ip -n $NS_DST link set dev veth$DST up 342ip -n $NS_SRC link set dev veth$SRC up 343chk_gro " - aggregation" 1 344 345if [ $CPUS -gt 1 ]; then 346 [ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress 347 348 ip -n $NS_DST link set dev veth$DST down 349 ip -n $NS_SRC link set dev veth$SRC down 350 ip netns exec $NS_DST ethtool -L veth$DST tx 2 351 chk_channels "increasing tx channels with device down" $DST 2 2 352 ip -n $NS_DST link set dev veth$DST up 353 ip -n $NS_SRC link set dev veth$SRC up 354fi 355 356ip netns exec $NS_DST ethtool -K veth$DST gro off 357ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off 358chk_gro "aggregation again with default and TSO off" 10 359 360exit $ret 361