selftests: net: veth: add tests for set_channel
Simple functional test for the newly exposed features. Also add an optional stress test for the channel number update under flood. RFC v1 -> RFC v2: - add the stress test Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni
David S. Miller
parent
9d3684c24a
commit
1ec2230fc7
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@ -13,7 +13,7 @@ readonly NS_DST=$BASE$DST
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readonly BM_NET_V4=192.168.1.
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readonly BM_NET_V6=2001:db8::
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readonly NPROCS=`nproc`
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readonly CPUS=`nproc`
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ret=0
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cleanup() {
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@ -75,6 +75,29 @@ chk_tso_flag() {
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__chk_flag "$1" $2 $3 tcp-segmentation-offload
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}
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chk_channels() {
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local msg="$1"
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local target=$2
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local rx=$3
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local tx=$4
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local dev=veth$target
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local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\
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grep RX: | tail -n 1 | awk '{print $2}' `
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local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\
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grep TX: | tail -n 1 | awk '{print $2}'`
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local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\
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grep Combined: | tail -n 1 | awk '{print $2}'`
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printf "%-60s" "$msg"
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if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then
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echo " ok "
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else
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echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined"
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fi
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}
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chk_gro() {
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local msg="$1"
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local expected=$2
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@ -107,11 +130,100 @@ chk_gro() {
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fi
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}
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__change_channels()
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{
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local cur_cpu
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local end=$1
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local cur
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local i
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while true; do
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printf -v cur '%(%s)T'
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[ $cur -le $end ] || break
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for i in `seq 1 $CPUS`; do
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ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i
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ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i
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done
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for i in `seq 1 $((CPUS - 1))`; do
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cur_cpu=$((CPUS - $i))
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ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu
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ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu
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done
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done
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}
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__send_data() {
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local end=$1
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while true; do
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printf -v cur '%(%s)T'
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[ $cur -le $end ] || break
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ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST
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done
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}
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do_stress() {
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local end
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printf -v end '%(%s)T'
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end=$((end + $STRESS))
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ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3
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ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
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ip netns exec $NS_DST ./udpgso_bench_rx &
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local rx_pid=$!
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echo "Running stress test for $STRESS seconds..."
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__change_channels $end &
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local ch_pid=$!
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__send_data $end &
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local data_pid_1=$!
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__send_data $end &
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local data_pid_2=$!
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__send_data $end &
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local data_pid_3=$!
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__send_data $end &
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local data_pid_4=$!
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wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4
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kill -9 $rx_pid
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echo "done"
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# restore previous setting
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ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2
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ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1
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}
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usage() {
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echo "Usage: $0 [-h] [-s <seconds>]"
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echo -e "\t-h: show this help"
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echo -e "\t-s: run optional stress tests for the given amount of seconds"
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}
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STRESS=0
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while getopts "hs:" option; do
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case "$option" in
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"h")
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usage $0
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exit 0
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;;
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"s")
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STRESS=$OPTARG
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;;
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esac
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done
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if [ ! -f ../bpf/xdp_dummy.o ]; then
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echo "Missing xdp_dummy helper. Build bpf selftest first"
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exit 1
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fi
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[ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped"
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[ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too"
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create_ns
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chk_gro_flag "default - gro flag" $SRC off
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chk_gro_flag " - peer gro flag" $DST off
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@ -134,6 +246,8 @@ chk_gro " - aggregation with TSO off" 1
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cleanup
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create_ns
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chk_channels "default channels" $DST 1 1
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ip -n $NS_DST link set dev veth$DST down
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ip netns exec $NS_DST ethtool -K veth$DST gro on
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chk_gro_flag "with gro enabled on link down - gro flag" $DST on
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@ -147,6 +261,56 @@ chk_gro " - aggregation with TSO off" 1
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cleanup
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create_ns
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CUR_TX=1
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CUR_RX=1
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if [ $CPUS -gt 1 ]; then
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ip netns exec $NS_DST ethtool -L veth$DST tx 2
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chk_channels "setting tx channels" $DST 1 2
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CUR_TX=2
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fi
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if [ $CPUS -gt 2 ]; then
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ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
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chk_channels "setting both rx and tx channels" $DST 3 3
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CUR_RX=3
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CUR_TX=3
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fi
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ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null
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chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX
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ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null
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chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX
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if [ $CPUS -gt 1 ]; then
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# this also tests queues nr reduction
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ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null
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ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null
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printf "%-60s" "bad setting: XDP with RX nr less than TX"
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ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o \
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section xdp_dummy 2>/dev/null &&\
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echo "fail - set operation successful ?!?" || echo " ok "
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# the following tests will run with multiple channels active
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ip netns exec $NS_SRC ethtool -L veth$SRC rx 2
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ip netns exec $NS_DST ethtool -L veth$DST rx 2
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ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o \
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section xdp_dummy 2>/dev/null
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printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set"
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ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\
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echo "fail - set operation successful ?!?" || echo " ok "
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CUR_RX=2
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CUR_TX=2
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fi
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if [ $CPUS -gt 2 ]; then
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printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set"
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ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\
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echo "fail - set operation successful ?!?" || echo " ok "
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chk_channels "setting invalid channels nr" $DST 2 2
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fi
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ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o section xdp_dummy 2>/dev/null
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chk_gro_flag "with xdp attached - gro flag" $DST on
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chk_gro_flag " - peer gro flag" $SRC off
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@ -167,10 +331,27 @@ chk_gro_flag " - after gro on xdp off, gro flag" $DST on
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chk_gro_flag " - peer gro flag" $SRC off
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chk_tso_flag " - tso flag" $SRC on
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chk_tso_flag " - peer tso flag" $DST on
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if [ $CPUS -gt 1 ]; then
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ip netns exec $NS_DST ethtool -L veth$DST tx 1
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chk_channels "decreasing tx channels with device down" $DST 2 1
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fi
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ip -n $NS_DST link set dev veth$DST up
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ip -n $NS_SRC link set dev veth$SRC up
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chk_gro " - aggregation" 1
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if [ $CPUS -gt 1 ]; then
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[ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress
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ip -n $NS_DST link set dev veth$DST down
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ip -n $NS_SRC link set dev veth$SRC down
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ip netns exec $NS_DST ethtool -L veth$DST tx 2
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chk_channels "increasing tx channels with device down" $DST 2 2
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ip -n $NS_DST link set dev veth$DST up
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ip -n $NS_SRC link set dev veth$SRC up
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fi
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ip netns exec $NS_DST ethtool -K veth$DST gro off
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ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
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chk_gro "aggregation again with default and TSO off" 10
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