sch_offload.sh

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3#
  4# Test qdisc offload indication
  5
  6
  7ALL_TESTS="
  8	test_root
  9	test_port_tbf
 10	test_etsprio
 11	test_etsprio_port_tbf
 12"
 13NUM_NETIFS=1
 14lib_dir=$(dirname $0)/../../../net/forwarding
 15source $lib_dir/lib.sh
 16
 17check_not_offloaded()
 18{
 19	local handle=$1; shift
 20	local h
 21	local offloaded
 22
 23	h=$(qdisc_stats_get $h1 "$handle" .handle)
 24	[[ $h == '"'$handle'"' ]]
 25	check_err $? "Qdisc with handle $handle does not exist"
 26
 27	offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
 28	[[ $offloaded == true ]]
 29	check_fail $? "Qdisc with handle $handle offloaded, but should not be"
 30}
 31
 32check_all_offloaded()
 33{
 34	local handle=$1; shift
 35
 36	if [[ ! -z $handle ]]; then
 37		local offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
 38		[[ $offloaded == true ]]
 39		check_err $? "Qdisc with handle $handle not offloaded"
 40	fi
 41
 42	local unoffloaded=$(tc q sh dev $h1 invisible |
 43				grep -v offloaded |
 44				sed s/root/parent\ root/ |
 45				cut -d' ' -f 5)
 46	[[ -z $unoffloaded ]]
 47	check_err $? "Qdiscs with following parents not offloaded: $unoffloaded"
 48
 49	pre_cleanup
 50}
 51
 52with_ets()
 53{
 54	local handle=$1; shift
 55	local locus=$1; shift
 56
 57	tc qdisc add dev $h1 $locus handle $handle \
 58	   ets bands 8 priomap 7 6 5 4 3 2 1 0
 59	"$@"
 60	tc qdisc del dev $h1 $locus
 61}
 62
 63with_prio()
 64{
 65	local handle=$1; shift
 66	local locus=$1; shift
 67
 68	tc qdisc add dev $h1 $locus handle $handle \
 69	   prio bands 8 priomap 7 6 5 4 3 2 1 0
 70	"$@"
 71	tc qdisc del dev $h1 $locus
 72}
 73
 74with_red()
 75{
 76	local handle=$1; shift
 77	local locus=$1; shift
 78
 79	tc qdisc add dev $h1 $locus handle $handle \
 80	   red limit 1000000 min 200000 max 300000 probability 0.5 avpkt 1500
 81	"$@"
 82	tc qdisc del dev $h1 $locus
 83}
 84
 85with_tbf()
 86{
 87	local handle=$1; shift
 88	local locus=$1; shift
 89
 90	tc qdisc add dev $h1 $locus handle $handle \
 91	   tbf rate 400Mbit burst 128K limit 1M
 92	"$@"
 93	tc qdisc del dev $h1 $locus
 94}
 95
 96with_pfifo()
 97{
 98	local handle=$1; shift
 99	local locus=$1; shift
100
101	tc qdisc add dev $h1 $locus handle $handle pfifo limit 100K
102	"$@"
103	tc qdisc del dev $h1 $locus
104}
105
106with_bfifo()
107{
108	local handle=$1; shift
109	local locus=$1; shift
110
111	tc qdisc add dev $h1 $locus handle $handle bfifo limit 100K
112	"$@"
113	tc qdisc del dev $h1 $locus
114}
115
116with_drr()
117{
118	local handle=$1; shift
119	local locus=$1; shift
120
121	tc qdisc add dev $h1 $locus handle $handle drr
122	"$@"
123	tc qdisc del dev $h1 $locus
124}
125
126with_qdiscs()
127{
128	local handle=$1; shift
129	local parent=$1; shift
130	local kind=$1; shift
131	local next_handle=$((handle * 2))
132	local locus;
133
134	if [[ $kind == "--" ]]; then
135		local cmd=$1; shift
136		$cmd $(printf %x: $parent) "$@"
137	else
138		if ((parent == 0)); then
139			locus=root
140		else
141			locus=$(printf "parent %x:1" $parent)
142		fi
143
144		with_$kind $(printf %x: $handle) "$locus" \
145			with_qdiscs $next_handle $handle "$@"
146	fi
147}
148
149get_name()
150{
151	local parent=$1; shift
152	local name=$(echo "" "${@^^}" | tr ' ' -)
153
154	if ((parent != 0)); then
155		kind=$(qdisc_stats_get $h1 $parent: .kind)
156		kind=${kind%\"}
157		kind=${kind#\"}
158		name="-${kind^^}$name"
159	fi
160
161	echo root$name
162}
163
164do_test_offloaded()
165{
166	local handle=$1; shift
167	local parent=$1; shift
168
169	RET=0
170	with_qdiscs $handle $parent "$@" -- check_all_offloaded
171	log_test $(get_name $parent "$@")" offloaded"
172}
173
174do_test_nooffload()
175{
176	local handle=$1; shift
177	local parent=$1; shift
178
179	local name=$(echo "${@^^}" | tr ' ' -)
180	local kind
181
182	RET=0
183	with_qdiscs $handle $parent "$@" -- check_not_offloaded
184	log_test $(get_name $parent "$@")" not offloaded"
185}
186
187do_test_combinations()
188{
189	local handle=$1; shift
190	local parent=$1; shift
191
192	local cont
193	local leaf
194	local fifo
195
196	for cont in "" ets prio; do
197		for leaf in "" red tbf "red tbf" "tbf red"; do
198			for fifo in "" pfifo bfifo; do
199				if [[ -z "$cont$leaf$fifo" ]]; then
200					continue
201				fi
202				do_test_offloaded $handle $parent \
203						  $cont $leaf $fifo
204			done
205		done
206	done
207
208	for cont in ets prio; do
209		for leaf in red tbf; do
210			do_test_nooffload $handle $parent $cont red tbf $leaf
211			do_test_nooffload $handle $parent $cont tbf red $leaf
212		done
213		for leaf in "red red" "tbf tbf"; do
214			do_test_nooffload $handle $parent $cont $leaf
215		done
216	done
217
218	do_test_nooffload $handle $parent drr
219}
220
221test_root()
222{
223	do_test_combinations 1 0
224}
225
226test_port_tbf()
227{
228	with_tbf 1: root \
229		do_test_combinations 8 1
230}
231
232do_test_etsprio()
233{
234	local parent=$1; shift
235	local tbfpfx=$1; shift
236	local cont
237
238	for cont in ets prio; do
239		RET=0
240		with_$cont 8: "$parent" \
241			with_red 11: "parent 8:1" \
242			with_red 12: "parent 8:2" \
243			with_tbf 13: "parent 8:3" \
244			with_tbf 14: "parent 8:4" \
245			check_all_offloaded
246		log_test "root$tbfpfx-ETS-{RED,TBF} offloaded"
247
248		RET=0
249		with_$cont 8: "$parent" \
250			with_red 81: "parent 8:1" \
251				with_tbf 811: "parent 81:1" \
252			with_tbf 84: "parent 8:4" \
253				with_red 841: "parent 84:1" \
254			check_all_offloaded
255		log_test "root$tbfpfx-ETS-{RED-TBF,TBF-RED} offloaded"
256
257		RET=0
258		with_$cont 8: "$parent" \
259			with_red 81: "parent 8:1" \
260				with_tbf 811: "parent 81:1" \
261					with_bfifo 8111: "parent 811:1" \
262			with_tbf 82: "parent 8:2" \
263				with_red 821: "parent 82:1" \
264					with_bfifo 8211: "parent 821:1" \
265			check_all_offloaded
266		log_test "root$tbfpfx-ETS-{RED-TBF-bFIFO,TBF-RED-bFIFO} offloaded"
267	done
268}
269
270test_etsprio()
271{
272	do_test_etsprio root ""
273}
274
275test_etsprio_port_tbf()
276{
277	with_tbf 1: root \
278		do_test_etsprio "parent 1:1" "-TBF"
279}
280
281cleanup()
282{
283	tc qdisc del dev $h1 root &>/dev/null
284}
285
286trap cleanup EXIT
287h1=${NETIFS[p1]}
288tests_run
289
290exit $EXIT_STATUS