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-rwxr-xr-xtools/testing/selftests/net/veth.sh360
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 0000000000..2d073595c6
--- /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