#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
BPF_FILE="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}. Run 'make' 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
ip -n $NS_DST link set dev veth$DST up
ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp
chk_gro_flag "gro vs xdp while down - gro flag off" $DST off
ip -n $NS_DST link set dev veth$DST down
chk_gro_flag " - after down" $DST off
ip -n $NS_DST link set dev veth$DST xdp off
chk_gro_flag " - after xdp off" $DST off
ip -n $NS_DST link set dev veth$DST up
chk_gro_flag " - after up" $DST off
ip -n $NS_SRC link set dev veth$SRC xdp object ${BPF_FILE} section xdp
chk_gro_flag " - after peer xdp" $DST off
cleanup
create_ns
ip -n $NS_DST link set dev veth$DST up
ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp
ip netns exec $NS_DST ethtool -K veth$DST generic-receive-offload on
chk_gro_flag "gro vs xdp while down - gro flag on" $DST on
ip -n $NS_DST link set dev veth$DST down
chk_gro_flag " - after down" $DST on
ip -n $NS_DST link set dev veth$DST xdp off
chk_gro_flag " - after xdp off" $DST on
ip -n $NS_DST link set dev veth$DST up
chk_gro_flag " - after up" $DST on
ip -n $NS_SRC link set dev veth$SRC xdp object ${BPF_FILE} section xdp
chk_gro_flag " - after peer xdp" $DST on
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 off
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 " - no aggregation" 10
ip netns exec $NS_DST ethtool -K veth$DST generic-receive-offload on
chk_gro_flag " - gro flag with GRO on" $DST 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
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