tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests: mlxsw: Add a TBF selftest
Add a test that runs traffic across a port throttled with TBF. The test
checks that the observed throughput is within +-5% from the installed
shaper.
To allow checking both the software datapath and the offloaded one, make
the test suitable for inclusion from driver-specific wrapper. Introduce
such wrappers for mlxsw.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by
Petr Machata
and committed by
David S. Miller
e814c58d
c143139b
+344
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_ets.sh
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_ets.sh
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_prio.sh
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_prio.sh
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_root.sh
+9
tools/testing/selftests/drivers/net/mlxsw/sch_tbf_root.sh
+233
tools/testing/selftests/net/forwarding/sch_tbf_core.sh
+233
tools/testing/selftests/net/forwarding/sch_tbf_core.sh
···
1
+
# SPDX-License-Identifier: GPL-2.0
2
+
3
+
# This test sends a stream of traffic from H1 through a switch, to H2. On the
4
+
# egress port from the switch ($swp2), a shaper is installed. The test verifies
5
+
# that the rates on the port match the configured shaper.
6
+
#
7
+
# In order to test per-class shaping, $swp2 actually contains TBF under PRIO or
8
+
# ETS, with two different configurations. Traffic is prioritized using 802.1p.
9
+
#
10
+
# +-------------------------------------------+
11
+
# | H1 |
12
+
# | + $h1.10 $h1.11 + |
13
+
# | | 192.0.2.1/28 192.0.2.17/28 | |
14
+
# | | | |
15
+
# | \______________ _____________/ |
16
+
# | \ / |
17
+
# | + $h1 |
18
+
# +---------------------|---------------------+
19
+
# |
20
+
# +---------------------|---------------------+
21
+
# | SW + $swp1 |
22
+
# | _______________/ \_______________ |
23
+
# | / \ |
24
+
# | +-|--------------+ +--------------|-+ |
25
+
# | | + $swp1.10 | | $swp1.11 + | |
26
+
# | | | | | |
27
+
# | | BR10 | | BR11 | |
28
+
# | | | | | |
29
+
# | | + $swp2.10 | | $swp2.11 + | |
30
+
# | +-|--------------+ +--------------|-+ |
31
+
# | \_______________ ______________/ |
32
+
# | \ / |
33
+
# | + $swp2 |
34
+
# +---------------------|---------------------+
35
+
# |
36
+
# +---------------------|---------------------+
37
+
# | H2 + $h2 |
38
+
# | ______________/ \______________ |
39
+
# | / \ |
40
+
# | | | |
41
+
# | + $h2.10 $h2.11 + |
42
+
# | 192.0.2.2/28 192.0.2.18/28 |
43
+
# +-------------------------------------------+
44
+
45
+
NUM_NETIFS=4
46
+
CHECK_TC="yes"
47
+
source $lib_dir/lib.sh
48
+
49
+
ipaddr()
50
+
{
51
+
local host=$1; shift
52
+
local vlan=$1; shift
53
+
54
+
echo 192.0.2.$((16 * (vlan - 10) + host))
55
+
}
56
+
57
+
host_create()
58
+
{
59
+
local dev=$1; shift
60
+
local host=$1; shift
61
+
62
+
simple_if_init $dev
63
+
mtu_set $dev 10000
64
+
65
+
vlan_create $dev 10 v$dev $(ipaddr $host 10)/28
66
+
ip link set dev $dev.10 type vlan egress 0:0
67
+
68
+
vlan_create $dev 11 v$dev $(ipaddr $host 11)/28
69
+
ip link set dev $dev.11 type vlan egress 0:1
70
+
}
71
+
72
+
host_destroy()
73
+
{
74
+
local dev=$1; shift
75
+
76
+
vlan_destroy $dev 11
77
+
vlan_destroy $dev 10
78
+
mtu_restore $dev
79
+
simple_if_fini $dev
80
+
}
81
+
82
+
h1_create()
83
+
{
84
+
host_create $h1 1
85
+
}
86
+
87
+
h1_destroy()
88
+
{
89
+
host_destroy $h1
90
+
}
91
+
92
+
h2_create()
93
+
{
94
+
host_create $h2 2
95
+
96
+
tc qdisc add dev $h2 clsact
97
+
tc filter add dev $h2 ingress pref 1010 prot 802.1q \
98
+
flower $TCFLAGS vlan_id 10 action pass
99
+
tc filter add dev $h2 ingress pref 1011 prot 802.1q \
100
+
flower $TCFLAGS vlan_id 11 action pass
101
+
}
102
+
103
+
h2_destroy()
104
+
{
105
+
tc qdisc del dev $h2 clsact
106
+
host_destroy $h2
107
+
}
108
+
109
+
switch_create()
110
+
{
111
+
local intf
112
+
local vlan
113
+
114
+
ip link add dev br10 type bridge
115
+
ip link add dev br11 type bridge
116
+
117
+
for intf in $swp1 $swp2; do
118
+
ip link set dev $intf up
119
+
mtu_set $intf 10000
120
+
121
+
for vlan in 10 11; do
122
+
vlan_create $intf $vlan
123
+
ip link set dev $intf.$vlan master br$vlan
124
+
ip link set dev $intf.$vlan up
125
+
done
126
+
done
127
+
128
+
for vlan in 10 11; do
129
+
ip link set dev $swp1.$vlan type vlan ingress 0:0 1:1
130
+
done
131
+
132
+
ip link set dev br10 up
133
+
ip link set dev br11 up
134
+
}
135
+
136
+
switch_destroy()
137
+
{
138
+
local intf
139
+
local vlan
140
+
141
+
# A test may have been interrupted mid-run, with Qdisc installed. Delete
142
+
# it here.
143
+
tc qdisc del dev $swp2 root 2>/dev/null
144
+
145
+
ip link set dev br11 down
146
+
ip link set dev br10 down
147
+
148
+
for intf in $swp2 $swp1; do
149
+
for vlan in 11 10; do
150
+
ip link set dev $intf.$vlan down
151
+
ip link set dev $intf.$vlan nomaster
152
+
vlan_destroy $intf $vlan
153
+
done
154
+
155
+
mtu_restore $intf
156
+
ip link set dev $intf down
157
+
done
158
+
159
+
ip link del dev br11
160
+
ip link del dev br10
161
+
}
162
+
163
+
setup_prepare()
164
+
{
165
+
h1=${NETIFS[p1]}
166
+
swp1=${NETIFS[p2]}
167
+
168
+
swp2=${NETIFS[p3]}
169
+
h2=${NETIFS[p4]}
170
+
171
+
swp3=${NETIFS[p5]}
172
+
h3=${NETIFS[p6]}
173
+
174
+
swp4=${NETIFS[p7]}
175
+
swp5=${NETIFS[p8]}
176
+
177
+
h2_mac=$(mac_get $h2)
178
+
179
+
vrf_prepare
180
+
181
+
h1_create
182
+
h2_create
183
+
switch_create
184
+
}
185
+
186
+
cleanup()
187
+
{
188
+
pre_cleanup
189
+
190
+
switch_destroy
191
+
h2_destroy
192
+
h1_destroy
193
+
194
+
vrf_cleanup
195
+
}
196
+
197
+
ping_ipv4()
198
+
{
199
+
ping_test $h1.10 $(ipaddr 2 10) " vlan 10"
200
+
ping_test $h1.11 $(ipaddr 2 11) " vlan 11"
201
+
}
202
+
203
+
tbf_get_counter()
204
+
{
205
+
local vlan=$1; shift
206
+
207
+
tc_rule_stats_get $h2 10$vlan ingress .bytes
208
+
}
209
+
210
+
do_tbf_test()
211
+
{
212
+
local vlan=$1; shift
213
+
local mbit=$1; shift
214
+
215
+
start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 2 $vlan) $h2_mac
216
+
sleep 5 # Wait for the burst to dwindle
217
+
218
+
local t2=$(busywait_for_counter 1000 +1 tbf_get_counter $vlan)
219
+
sleep 10
220
+
local t3=$(tbf_get_counter $vlan)
221
+
stop_traffic
222
+
223
+
RET=0
224
+
225
+
# Note: TBF uses 10^6 Mbits, not 2^20 ones.
226
+
local er=$((mbit * 1000 * 1000))
227
+
local nr=$(rate $t2 $t3 10)
228
+
local nr_pct=$((100 * (nr - er) / er))
229
+
((-5 <= nr_pct && nr_pct <= 5))
230
+
check_err $? "Expected rate $(humanize $er), got $(humanize $nr), which is $nr_pct% off. Required accuracy is +-5%."
231
+
232
+
log_test "TC $((vlan - 10)): TBF rate ${mbit}Mbit"
233
+
}
+6
tools/testing/selftests/net/forwarding/sch_tbf_ets.sh
+6
tools/testing/selftests/net/forwarding/sch_tbf_ets.sh
+39
tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh
+39
tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh
···
1
+
#!/bin/bash
2
+
# SPDX-License-Identifier: GPL-2.0
3
+
4
+
ALL_TESTS="
5
+
ping_ipv4
6
+
tbf_test
7
+
"
8
+
source $lib_dir/sch_tbf_core.sh
9
+
10
+
tbf_test_one()
11
+
{
12
+
local bs=$1; shift
13
+
14
+
tc qdisc replace dev $swp2 parent 10:3 handle 103: tbf \
15
+
rate 400Mbit burst $bs limit 1M
16
+
tc qdisc replace dev $swp2 parent 10:2 handle 102: tbf \
17
+
rate 800Mbit burst $bs limit 1M
18
+
19
+
do_tbf_test 10 400 $bs
20
+
do_tbf_test 11 800 $bs
21
+
}
22
+
23
+
tbf_test()
24
+
{
25
+
# This test is used for both ETS and PRIO. Even though we only need two
26
+
# bands, PRIO demands a minimum of three.
27
+
tc qdisc add dev $swp2 root handle 10: $QDISC 3 priomap 2 1 0
28
+
tbf_test_one 128K
29
+
tc qdisc del dev $swp2 root
30
+
}
31
+
32
+
trap cleanup EXIT
33
+
34
+
setup_prepare
35
+
setup_wait
36
+
37
+
tests_run
38
+
39
+
exit $EXIT_STATUS
+6
tools/testing/selftests/net/forwarding/sch_tbf_prio.sh
+6
tools/testing/selftests/net/forwarding/sch_tbf_prio.sh
+33
tools/testing/selftests/net/forwarding/sch_tbf_root.sh
+33
tools/testing/selftests/net/forwarding/sch_tbf_root.sh
···
1
+
#!/bin/bash
2
+
# SPDX-License-Identifier: GPL-2.0
3
+
4
+
ALL_TESTS="
5
+
ping_ipv4
6
+
tbf_test
7
+
"
8
+
: ${lib_dir:=.}
9
+
source $lib_dir/sch_tbf_core.sh
10
+
11
+
tbf_test_one()
12
+
{
13
+
local bs=$1; shift
14
+
15
+
tc qdisc replace dev $swp2 root handle 108: tbf \
16
+
rate 400Mbit burst $bs limit 1M
17
+
do_tbf_test 10 400 $bs
18
+
}
19
+
20
+
tbf_test()
21
+
{
22
+
tbf_test_one 128K
23
+
tc qdisc del dev $swp2 root
24
+
}
25
+
26
+
trap cleanup EXIT
27
+
28
+
setup_prepare
29
+
setup_wait
30
+
31
+
tests_run
32
+
33
+
exit $EXIT_STATUS