tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4BPF_FILE="xdp_dummy.bpf.o"
5readonly STATS="$(mktemp -p /tmp ns-XXXXXX)"
6readonly BASE=`basename $STATS`
7readonly SRC=2
8readonly DST=1
9readonly DST_NAT=100
10readonly NS_SRC=$BASE$SRC
11readonly NS_DST=$BASE$DST
12
13# "baremetal" network used for raw UDP traffic
14readonly BM_NET_V4=192.168.1.
15readonly BM_NET_V6=2001:db8::
16
17readonly CPUS=`nproc`
18ret=0
19
20cleanup() {
21 local ns
22 local jobs
23 readonly jobs="$(jobs -p)"
24 [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null
25 rm -f $STATS
26
27 for ns in $NS_SRC $NS_DST; do
28 ip netns del $ns 2>/dev/null
29 done
30}
31
32trap cleanup EXIT
33
34create_ns() {
35 local ns
36
37 for ns in $NS_SRC $NS_DST; do
38 ip netns add $ns
39 ip -n $ns link set dev lo up
40 done
41
42 ip link add name veth$SRC type veth peer name veth$DST
43
44 for ns in $SRC $DST; do
45 ip link set dev veth$ns netns $BASE$ns up
46 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24
47 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad
48 done
49 echo "#kernel" > $BASE
50 chmod go-rw $BASE
51}
52
53__chk_flag() {
54 local msg="$1"
55 local target=$2
56 local expected=$3
57 local flagname=$4
58
59 local flag=`ip netns exec $BASE$target ethtool -k veth$target |\
60 grep $flagname | awk '{print $2}'`
61
62 printf "%-60s" "$msg"
63 if [ "$flag" = "$expected" ]; then
64 echo " ok "
65 else
66 echo " fail - expected $expected found $flag"
67 ret=1
68 fi
69}
70
71chk_gro_flag() {
72 __chk_flag "$1" $2 $3 generic-receive-offload
73}
74
75chk_tso_flag() {
76 __chk_flag "$1" $2 $3 tcp-segmentation-offload
77}
78
79chk_channels() {
80 local msg="$1"
81 local target=$2
82 local rx=$3
83 local tx=$4
84
85 local dev=veth$target
86
87 local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\
88 grep RX: | tail -n 1 | awk '{print $2}' `
89 local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\
90 grep TX: | tail -n 1 | awk '{print $2}'`
91 local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\
92 grep Combined: | tail -n 1 | awk '{print $2}'`
93
94 printf "%-60s" "$msg"
95 if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then
96 echo " ok "
97 else
98 echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined"
99 fi
100}
101
102chk_gro() {
103 local msg="$1"
104 local expected=$2
105
106 ip netns exec $BASE$SRC ping -qc 1 $BM_NET_V4$DST >/dev/null
107 NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat -n
108
109 printf "%-60s" "$msg"
110 ip netns exec $BASE$DST ./udpgso_bench_rx -C 1000 -R 10 &
111 local spid=$!
112 sleep 0.1
113
114 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 13000 -S 1300 -M 1 -D $BM_NET_V4$DST
115 local retc=$?
116 wait $spid
117 local rets=$?
118 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
119 echo " fail client exit code $retc, server $rets"
120 ret=1
121 return
122 fi
123
124 local pkts=`NSTAT_HISTORY=$STATS ip netns exec $NS_DST nstat IpInReceives | \
125 awk '{print $2}' | tail -n 1`
126 if [ "$pkts" = "$expected" ]; then
127 echo " ok "
128 else
129 echo " fail - got $pkts packets, expected $expected "
130 ret=1
131 fi
132}
133
134__change_channels()
135{
136 local cur_cpu
137 local end=$1
138 local cur
139 local i
140
141 while true; do
142 printf -v cur '%(%s)T'
143 [ $cur -le $end ] || break
144
145 for i in `seq 1 $CPUS`; do
146 ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i
147 ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i
148 done
149
150 for i in `seq 1 $((CPUS - 1))`; do
151 cur_cpu=$((CPUS - $i))
152 ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu
153 ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu
154 done
155 done
156}
157
158__send_data() {
159 local end=$1
160
161 while true; do
162 printf -v cur '%(%s)T'
163 [ $cur -le $end ] || break
164
165 ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST
166 done
167}
168
169do_stress() {
170 local end
171 printf -v end '%(%s)T'
172 end=$((end + $STRESS))
173
174 ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3
175 ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
176
177 ip netns exec $NS_DST ./udpgso_bench_rx &
178 local rx_pid=$!
179
180 echo "Running stress test for $STRESS seconds..."
181 __change_channels $end &
182 local ch_pid=$!
183 __send_data $end &
184 local data_pid_1=$!
185 __send_data $end &
186 local data_pid_2=$!
187 __send_data $end &
188 local data_pid_3=$!
189 __send_data $end &
190 local data_pid_4=$!
191
192 wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4
193 kill -9 $rx_pid
194 echo "done"
195
196 # restore previous setting
197 ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2
198 ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1
199}
200
201usage() {
202 echo "Usage: $0 [-h] [-s <seconds>]"
203 echo -e "\t-h: show this help"
204 echo -e "\t-s: run optional stress tests for the given amount of seconds"
205}
206
207STRESS=0
208while getopts "hs:" option; do
209 case "$option" in
210 "h")
211 usage $0
212 exit 0
213 ;;
214 "s")
215 STRESS=$OPTARG
216 ;;
217 esac
218done
219
220if [ ! -f ${BPF_FILE} ]; then
221 echo "Missing ${BPF_FILE}. Run 'make' first"
222 exit 1
223fi
224
225[ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped"
226[ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too"
227
228create_ns
229chk_gro_flag "default - gro flag" $SRC off
230chk_gro_flag " - peer gro flag" $DST off
231chk_tso_flag " - tso flag" $SRC on
232chk_tso_flag " - peer tso flag" $DST on
233chk_gro " - aggregation" 1
234ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
235chk_gro " - aggregation with TSO off" 10
236cleanup
237
238create_ns
239ip netns exec $NS_DST ethtool -K veth$DST gro on
240chk_gro_flag "with gro on - gro flag" $DST on
241chk_gro_flag " - peer gro flag" $SRC off
242chk_tso_flag " - tso flag" $SRC on
243chk_tso_flag " - peer tso flag" $DST on
244ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
245ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
246chk_gro " - aggregation with TSO off" 1
247cleanup
248
249create_ns
250ip -n $NS_DST link set dev veth$DST up
251ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp
252chk_gro_flag "gro vs xdp while down - gro flag off" $DST off
253ip -n $NS_DST link set dev veth$DST down
254chk_gro_flag " - after down" $DST off
255ip -n $NS_DST link set dev veth$DST xdp off
256chk_gro_flag " - after xdp off" $DST off
257ip -n $NS_DST link set dev veth$DST up
258chk_gro_flag " - after up" $DST off
259ip -n $NS_SRC link set dev veth$SRC xdp object ${BPF_FILE} section xdp
260chk_gro_flag " - after peer xdp" $DST off
261cleanup
262
263create_ns
264ip -n $NS_DST link set dev veth$DST up
265ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp
266ip netns exec $NS_DST ethtool -K veth$DST generic-receive-offload on
267chk_gro_flag "gro vs xdp while down - gro flag on" $DST on
268ip -n $NS_DST link set dev veth$DST down
269chk_gro_flag " - after down" $DST on
270ip -n $NS_DST link set dev veth$DST xdp off
271chk_gro_flag " - after xdp off" $DST on
272ip -n $NS_DST link set dev veth$DST up
273chk_gro_flag " - after up" $DST on
274ip -n $NS_SRC link set dev veth$SRC xdp object ${BPF_FILE} section xdp
275chk_gro_flag " - after peer xdp" $DST on
276cleanup
277
278create_ns
279chk_channels "default channels" $DST 1 1
280
281ip -n $NS_DST link set dev veth$DST down
282ip netns exec $NS_DST ethtool -K veth$DST gro on
283chk_gro_flag "with gro enabled on link down - gro flag" $DST on
284chk_gro_flag " - peer gro flag" $SRC off
285chk_tso_flag " - tso flag" $SRC on
286chk_tso_flag " - peer tso flag" $DST on
287ip -n $NS_DST link set dev veth$DST up
288ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
289ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
290chk_gro " - aggregation with TSO off" 1
291cleanup
292
293create_ns
294
295CUR_TX=1
296CUR_RX=1
297if [ $CPUS -gt 1 ]; then
298 ip netns exec $NS_DST ethtool -L veth$DST tx 2
299 chk_channels "setting tx channels" $DST 1 2
300 CUR_TX=2
301fi
302
303if [ $CPUS -gt 2 ]; then
304 ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
305 chk_channels "setting both rx and tx channels" $DST 3 3
306 CUR_RX=3
307 CUR_TX=3
308fi
309
310ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null
311chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX
312
313ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null
314chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX
315
316if [ $CPUS -gt 1 ]; then
317 # this also tests queues nr reduction
318 ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null
319 ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null
320 printf "%-60s" "bad setting: XDP with RX nr less than TX"
321 ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \
322 section xdp 2>/dev/null &&\
323 echo "fail - set operation successful ?!?" || echo " ok "
324
325 # the following tests will run with multiple channels active
326 ip netns exec $NS_SRC ethtool -L veth$SRC rx 2
327 ip netns exec $NS_DST ethtool -L veth$DST rx 2
328 ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} \
329 section xdp 2>/dev/null
330 printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set"
331 ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\
332 echo "fail - set operation successful ?!?" || echo " ok "
333 CUR_RX=2
334 CUR_TX=2
335fi
336
337if [ $CPUS -gt 2 ]; then
338 printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set"
339 ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\
340 echo "fail - set operation successful ?!?" || echo " ok "
341 chk_channels "setting invalid channels nr" $DST 2 2
342fi
343
344ip -n $NS_DST link set dev veth$DST xdp object ${BPF_FILE} section xdp 2>/dev/null
345chk_gro_flag "with xdp attached - gro flag" $DST off
346chk_gro_flag " - peer gro flag" $SRC off
347chk_tso_flag " - tso flag" $SRC off
348chk_tso_flag " - peer tso flag" $DST on
349ip netns exec $NS_DST ethtool -K veth$DST rx-udp-gro-forwarding on
350chk_gro " - no aggregation" 10
351ip netns exec $NS_DST ethtool -K veth$DST generic-receive-offload on
352chk_gro_flag " - gro flag with GRO on" $DST on
353chk_gro " - aggregation" 1
354
355
356ip -n $NS_DST link set dev veth$DST down
357ip -n $NS_SRC link set dev veth$SRC down
358chk_gro_flag " - after dev off, flag" $DST on
359chk_gro_flag " - peer flag" $SRC off
360
361ip netns exec $NS_DST ethtool -K veth$DST gro on
362ip -n $NS_DST link set dev veth$DST xdp off
363chk_gro_flag " - after gro on xdp off, gro flag" $DST on
364chk_gro_flag " - peer gro flag" $SRC off
365chk_tso_flag " - tso flag" $SRC on
366chk_tso_flag " - peer tso flag" $DST on
367
368if [ $CPUS -gt 1 ]; then
369 ip netns exec $NS_DST ethtool -L veth$DST tx 1
370 chk_channels "decreasing tx channels with device down" $DST 2 1
371fi
372
373ip -n $NS_DST link set dev veth$DST up
374ip -n $NS_SRC link set dev veth$SRC up
375chk_gro " - aggregation" 1
376
377if [ $CPUS -gt 1 ]; then
378 [ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress
379
380 ip -n $NS_DST link set dev veth$DST down
381 ip -n $NS_SRC link set dev veth$SRC down
382 ip netns exec $NS_DST ethtool -L veth$DST tx 2
383 chk_channels "increasing tx channels with device down" $DST 2 2
384 ip -n $NS_DST link set dev veth$DST up
385 ip -n $NS_SRC link set dev veth$SRC up
386fi
387
388ip netns exec $NS_DST ethtool -K veth$DST gro off
389ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
390chk_gro "aggregation again with default and TSO off" 10
391
392exit $ret