diff options
Diffstat (limited to 'tools/testing/selftests/net/veth.sh')
| -rwxr-xr-x | tools/testing/selftests/net/veth.sh | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/veth.sh b/tools/testing/selftests/net/veth.sh new file mode 100755 index 000000000..2d073595c --- /dev/null +++ b/tools/testing/selftests/net/veth.sh @@ -0,0 +1,360 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +BPF_FILE="../bpf/xdp_dummy.bpf.o" +readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" +readonly BASE=`basename $STATS` +readonly SRC=2 +readonly DST=1 +readonly DST_NAT=100 +readonly NS_SRC=$BASE$SRC +readonly NS_DST=$BASE$DST + +# "baremetal" network used for raw UDP traffic +readonly BM_NET_V4=192.168.1. +readonly BM_NET_V6=2001:db8:: + +readonly CPUS=`nproc` +ret=0 + +cleanup() { + local ns + local jobs + readonly jobs="$(jobs -p)" + [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null + rm -f $STATS + + for ns in $NS_SRC $NS_DST; do + ip netns del $ns 2>/dev/null + done +} + +trap cleanup EXIT + +create_ns() { + local ns + + for ns in $NS_SRC $NS_DST; do + ip netns add $ns + ip -n $ns link set dev lo up + done + + ip link add name veth$SRC type veth peer name veth$DST + + for ns in $SRC $DST; do + ip link set dev veth$ns netns $BASE$ns up + ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24 + ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad + done + echo "#kernel" > $BASE + chmod go-rw $BASE +} + +__chk_flag() { + local msg="$1" + local target=$2 + local expected=$3 + local flagname=$4 + + local flag=`ip netns exec $BASE$target ethtool -k veth$target |\ + grep $flagname | awk '{print $2}'` + + printf "%-60s" "$msg" + if [ "$flag" = "$expected" ]; then + echo " ok " + else + echo " fail - expected $expected found $flag" + ret=1 + fi +} + +chk_gro_flag() { + __chk_flag "$1" $2 $3 generic-receive-offload +} + +chk_tso_flag() { + __chk_flag "$1" $2 $3 tcp-segmentation-offload +} + +chk_channels() { + local msg="$1" + local target=$2 + local rx=$3 + local tx=$4 + + local dev=veth$target + + local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\ + grep RX: | tail -n 1 | awk '{print $2}' ` + local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\ + grep TX: | tail -n 1 | awk '{print $2}'` + local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\ + grep Combined: | tail -n 1 | awk '{print $2}'` + + printf "%-60s" "$msg" + if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then + echo " ok " + else + echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined" + fi +} + +chk_gro() { + local msg="$1" + local expected=$2 + + ip netns exec $BASE$SRC ping -qc 1 $BM_NET_V4$DST >/dev/null + NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat -n + + printf "%-60s" "$msg" + ip netns exec $BASE$DST ./udpgso_bench_rx -C 1000 -R 10 & + local spid=$! + sleep 0.1 + + ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 13000 -S 1300 -M 1 -D $BM_NET_V4$DST + local retc=$? + wait $spid + local rets=$? + if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then + echo " fail client exit code $retc, server $rets" + ret=1 + return + fi + + local pkts=`NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat IpInReceives | \ + awk '{print $2}' | tail -n 1` + if [ "$pkts" = "$expected" ]; then + echo " ok " + else + echo " fail - got $pkts packets, expected $expected " + ret=1 + fi +} + +__change_channels() +{ + local cur_cpu + local end=$1 + local cur + local i + + while true; do + printf -v cur '%(%s)T' + [ $cur -le $end ] || break + + for i in `seq 1 $CPUS`; do + ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i + ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i + done + + for i in `seq 1 $((CPUS - 1))`; do + cur_cpu=$((CPUS - $i)) + ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu + ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu + done + done +} + +__send_data() { + local end=$1 + + while true; do + printf -v cur '%(%s)T' + [ $cur -le $end ] || break + + ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST + done +} + +do_stress() { + local end + printf -v end '%(%s)T' + end=$((end + $STRESS)) + + ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3 + ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 + + ip netns exec $NS_DST ./udpgso_bench_rx & + local rx_pid=$! + + echo "Running stress test for $STRESS seconds..." + __change_channels $end & + local ch_pid=$! + __send_data $end & + local data_pid_1=$! + __send_data $end & + local data_pid_2=$! + __send_data $end & + local data_pid_3=$! + __send_data $end & + local data_pid_4=$! + + wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4 + kill -9 $rx_pid + echo "done" + + # restore previous setting + ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2 + ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1 +} + +usage() { + echo "Usage: $0 [-h] [-s <seconds>]" + echo -e "\t-h: show this help" + echo -e "\t-s: run optional stress tests for the given amount of seconds" +} + +STRESS=0 +while getopts "hs:" option; do + case "$option" in + "h") + usage $0 + exit 0 + ;; + "s") + STRESS=$OPTARG + ;; + esac +done + +if [ ! -f ${BPF_FILE} ]; then + echo "Missing ${BPF_FILE}. Build bpf selftest first" + exit 1 +fi + +[ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped" +[ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too" + +create_ns +chk_gro_flag "default - gro flag" $SRC off +chk_gro_flag " - peer gro flag" $DST off +chk_tso_flag " - tso flag" $SRC on +chk_tso_flag " - peer tso flag" $DST on +chk_gro " - aggregation" 1 +ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off +chk_gro " - aggregation with TSO off" 10 +cleanup + +create_ns +ip netns exec $NS_DST ethtool -K veth$DST gro on +chk_gro_flag "with gro on - gro flag" $DST on +chk_gro_flag " - peer gro flag" $SRC off +chk_tso_flag " - tso flag" $SRC on +chk_tso_flag " - peer tso flag" $DST on +ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off +ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on +chk_gro " - aggregation with TSO off" 1 +cleanup + +create_ns +chk_channels "default channels" $DST 1 1 + +ip -n $NS_DST link set dev veth$DST down +ip netns exec $NS_DST ethtool -K veth$DST gro on +chk_gro_flag "with gro enabled on link down - gro flag" $DST on +chk_gro_flag " - peer gro flag" $SRC off +chk_tso_flag " - tso flag" $SRC on +chk_tso_flag " - peer tso flag" $DST on +ip -n $NS_DST link set dev veth$DST up +ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off +ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on +chk_gro " - aggregation with TSO off" 1 +cleanup + +create_ns + +CUR_TX=1 +CUR_RX=1 +if [ $CPUS -gt 1 ]; then + ip netns exec $NS_DST ethtool -L veth$DST tx 2 + chk_channels "setting tx channels" $DST 1 2 + CUR_TX=2 +fi + +if [ $CPUS -gt 2 ]; then + ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3 + chk_channels "setting both rx and tx channels" $DST 3 3 + CUR_RX=3 + CUR_TX=3 +fi + +ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null +chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX + +ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null +chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX + +if [ $CPUS -gt 1 ]; then + # this also tests queues nr reduction + ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null + ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null + printf "%-60s" "bad setting: XDP with RX nr less than TX" + ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ + section xdp 2>/dev/null &&\ + echo "fail - set operation successful ?!?" || echo " ok " + + # the following tests will run with multiple channels active + ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 + ip netns exec $NS_DST ethtool -L veth$DST rx 2 + ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \ + section xdp 2>/dev/null + printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set" + ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\ + echo "fail - set operation successful ?!?" || echo " ok " + CUR_RX=2 + CUR_TX=2 +fi + +if [ $CPUS -gt 2 ]; then + printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set" + ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\ + echo "fail - set operation successful ?!?" || echo " ok " + chk_channels "setting invalid channels nr" $DST 2 2 +fi + +ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp 2>/dev/null +chk_gro_flag "with xdp attached - gro flag" $DST on +chk_gro_flag " - peer gro flag" $SRC off +chk_tso_flag " - tso flag" $SRC off +chk_tso_flag " - peer tso flag" $DST on +ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on +chk_gro " - aggregation" 1 + + +ip -n $NS_DST link set dev veth$DST down +ip -n $NS_SRC link set dev veth$SRC down +chk_gro_flag " - after dev off, flag" $DST on +chk_gro_flag " - peer flag" $SRC off + +ip netns exec $NS_DST ethtool -K veth$DST gro on +ip -n $NS_DST link set dev veth$DST xdp off +chk_gro_flag " - after gro on xdp off, gro flag" $DST on +chk_gro_flag " - peer gro flag" $SRC off +chk_tso_flag " - tso flag" $SRC on +chk_tso_flag " - peer tso flag" $DST on + +if [ $CPUS -gt 1 ]; then + ip netns exec $NS_DST ethtool -L veth$DST tx 1 + chk_channels "decreasing tx channels with device down" $DST 2 1 +fi + +ip -n $NS_DST link set dev veth$DST up +ip -n $NS_SRC link set dev veth$SRC up +chk_gro " - aggregation" 1 + +if [ $CPUS -gt 1 ]; then + [ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress + + ip -n $NS_DST link set dev veth$DST down + ip -n $NS_SRC link set dev veth$SRC down + ip netns exec $NS_DST ethtool -L veth$DST tx 2 + chk_channels "increasing tx channels with device down" $DST 2 2 + ip -n $NS_DST link set dev veth$DST up + ip -n $NS_SRC link set dev veth$SRC up +fi + +ip netns exec $NS_DST ethtool -K veth$DST gro off +ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off +chk_gro "aggregation again with default and TSO off" 10 + +exit $ret |