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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
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$DST
# "baremetal" network used for raw UDP traffic
readonly BM_NET_V4=192.168.1.
readonly BM_NET_V6=2001:db8::
readonly NPROCS=`nproc`
ret=0
cleanup() {
local ns
local -r jobs="$(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_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
}
if [ ! -f ../bpf/xdp_dummy.o ]; then
echo "Missing xdp_dummy helper. Build bpf selftest first"
exit -1
fi
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 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
ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o section xdp_dummy 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
ip -n $NS_DST link set dev veth$DST up
ip -n $NS_SRC link set dev veth$SRC up
chk_gro " - aggregation" 1
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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