2 # SPDX-License-Identifier: GPL-2.0
5 readonly BASE="ns-$(mktemp -u XXXXXX)"
9 readonly NS_SRC=$BASE$SRC
10 readonly NS_DST=$BASE$DST
12 # "baremetal" network used for raw UDP traffic
13 readonly BM_NET_V4=192.168.1.
14 readonly BM_NET_V6=2001:db8::
16 # "overlay" network used for UDP over UDP tunnel traffic
17 readonly OL_NET_V4=172.16.1.
18 readonly OL_NET_V6=2001:db8:1::
19 readonly NPROCS=`nproc`
23 local -r jobs="$(jobs -p)"
24 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null
26 for ns in $NS_SRC $NS_DST; do
27 ip netns del $ns 2>/dev/null
37 for ns in $NS_SRC $NS_DST; do
39 ip -n $ns link set dev lo up
42 ip link add name veth$SRC type veth peer name veth$DST
44 for ns in $SRC $DST; do
45 ip link set dev veth$ns netns $BASE$ns
46 ip -n $BASE$ns link set dev veth$ns up
47 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24
48 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad
50 ip -n $NS_DST link set veth$DST xdp object ${BPF_FILE} section xdp 2>/dev/null
53 create_vxlan_endpoint() {
56 local -r bm_rem_addr=$3
59 local -r vxlan_port=4789
61 ip -n $netns link set dev $bm_dev up
62 ip -n $netns link add dev $vxlan_dev type vxlan id $vxlan_id \
63 dstport $vxlan_port remote $bm_rem_addr
64 ip -n $netns link set dev $vxlan_dev up
72 for ns in $SRC $DST; do
73 # note that 3 - $SRC == $DST and 3 - $DST == $SRC
74 create_vxlan_endpoint $BASE$ns veth$ns $BM_NET_V4$((3 - $ns)) vxlan$ns 4
75 ip -n $BASE$ns addr add dev vxlan$ns $OL_NET_V4$ns/24
77 for ns in $SRC $DST; do
78 create_vxlan_endpoint $BASE$ns veth$ns $BM_NET_V6$((3 - $ns)) vxlan6$ns 6
79 ip -n $BASE$ns addr add dev vxlan6$ns $OL_NET_V6$ns/24 nodad
84 if [[ $1 =~ .*:.* ]]; then
99 local filter=IpInReceives
102 printf "%-40s" "$msg"
104 if is_ipv6 $dst; then
105 # rx program does not support '-6' and implies ipv6 usage by default
113 [ -n "$bind" ] && rx_args="$rx_args -b $bind"
115 # send a single GSO packet, segmented in 10 UDP frames.
116 # Always expect 10 UDP frames on RX side as rx socket does
118 ip netns exec $NS_DST $ipt -A INPUT -p udp --dport 4789
119 ip netns exec $NS_DST $ipt -A INPUT -p udp --dport 8000
120 ip netns exec $NS_DST ./udpgso_bench_rx -C 1000 -R 10 -n 10 -l 1300 $rx_args &
123 ip netns exec $NS_SRC ./udpgso_bench_tx $family -M 1 -s 13000 -S 1300 -D $dst
127 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
128 echo " fail client exit code $retc, server $rets"
133 local rcv=`ip netns exec $NS_DST $ipt"-save" -c | grep 'dport 8000' | \
134 sed -e 's/\[//' -e 's/:.*//'`
135 if [ $rcv != $pkts ]; then
136 echo " fail - received $rcv packets, expected $pkts"
141 local vxrcv=`ip netns exec $NS_DST $ipt"-save" -c | grep 'dport 4789' | \
142 sed -e 's/\[//' -e 's/:.*//'`
144 # upper net can generate a little noise, allow some tolerance
145 if [ $vxrcv -lt $vxpkts -o $vxrcv -gt $((vxpkts + 3)) ]; then
146 echo " fail - received $vxrcv vxlan packets, expected $vxpkts"
158 printf "%-40s" "$msg"
159 if [ $NPROCS -lt 2 ]; then
160 echo " skip - needed 2 CPUs found $NPROCS"
164 is_ipv6 $dst && family=-6
166 # bind the sender and the receiver to different CPUs to try
167 # get reproducible results
168 ip netns exec $NS_DST bash -c "echo 2 > /sys/class/net/veth$DST/queues/rx-0/rps_cpus"
169 ip netns exec $NS_DST taskset 0x2 ./udpgso_bench_rx -C 1000 -R 10 &
172 ip netns exec $NS_SRC taskset 0x1 ./udpgso_bench_tx $family -l 3 -S 1300 -D $dst
176 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
177 echo " fail client exit code $retc, server $rets"
183 for family in 4 6; do
191 if [ $family = 6 ]; then
197 # Use ping6 on systems where ping doesn't handle IPv6
198 ping -w 1 -c 1 ::1 > /dev/null 2>&1 || PING="ping6"
204 run_test "No GRO" $BM_NET$DST 10 0
208 ip netns exec $NS_DST ethtool -K veth$DST rx-gro-list on
209 run_test "GRO frag list" $BM_NET$DST 1 0
212 # UDP GRO fwd skips aggregation when find an udp socket with the GRO option
213 # if there is an UDP tunnel in the running system, such lookup happen
215 # use NAT to circumvent GRO FWD check
217 ip -n $NS_DST addr add dev veth$DST $BM_NET$DST_NAT/$SUFFIX
218 ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
219 ip netns exec $NS_DST $IPT -t nat -I PREROUTING -d $BM_NET$DST_NAT \
220 -j DNAT --to-destination $BM_NET$DST
221 run_test "GRO fwd" $BM_NET$DST_NAT 1 0 $BM_NET$DST
225 run_bench "UDP fwd perf" $BM_NET$DST
226 ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
227 run_bench "UDP GRO fwd perf" $BM_NET$DST
231 ip netns exec $NS_DST ethtool -K veth$DST rx-gro-list on
232 run_test "GRO frag list over UDP tunnel" $OL_NET$DST 1 1
235 # use NAT to circumvent GRO FWD check
237 ip -n $NS_DST addr add dev $VXDEV$DST $OL_NET$DST_NAT/$SUFFIX
238 ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
239 ip netns exec $NS_DST $IPT -t nat -I PREROUTING -d $OL_NET$DST_NAT \
240 -j DNAT --to-destination $OL_NET$DST
242 # load arp cache before running the test to reduce the amount of
243 # stray traffic on top of the UDP tunnel
244 ip netns exec $NS_SRC $PING -q -c 1 $OL_NET$DST_NAT >/dev/null
245 run_test "GRO fwd over UDP tunnel" $OL_NET$DST_NAT 1 1 $OL_NET$DST
249 run_bench "UDP tunnel fwd perf" $OL_NET$DST
250 ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
251 run_bench "UDP tunnel GRO fwd perf" $OL_NET$DST