selftests: mlxsw: Add scale test for tc-police

Query the maximum number of supported policers using devlink-resource
and test that this number can be reached by configuring tc filters with
police action. Test that an error is returned in case the maximum number
is exceeded.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
index fd583a1..d7cf33a 100755 (executable)
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
@@ -28,7 +28,7 @@ cleanup()
 
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre"
+ALL_TESTS="router tc_flower mirror_gre tc_police"
 for current_test in ${TESTS:-$ALL_TESTS}; do
        source ${current_test}_scale.sh
 

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/tc_police_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/tc_police_scale.sh
new file mode 100644 (file)
index 0000000..e79ac0d
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/tc_police_scale.sh
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../tc_police_scale.sh
+
+tc_police_get_target()
+{
+       local should_fail=$1; shift
+       local target
+
+       target=$(devlink_resource_size_get global_policers single_rate_policers)
+
+       if ((! should_fail)); then
+               echo $target
+       else
+               echo $((target + 1))
+       fi
+}

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
index 43ba1b4..43f6624 100755 (executable)
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
@@ -22,7 +22,7 @@ cleanup()
 devlink_sp_read_kvd_defaults
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre"
+ALL_TESTS="router tc_flower mirror_gre tc_police"
 for current_test in ${TESTS:-$ALL_TESTS}; do
        source ${current_test}_scale.sh
 

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/tc_police_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/tc_police_scale.sh
new file mode 100644 (file)
index 0000000..e79ac0d
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/tc_police_scale.sh
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../tc_police_scale.sh
+
+tc_police_get_target()
+{
+       local should_fail=$1; shift
+       local target
+
+       target=$(devlink_resource_size_get global_policers single_rate_policers)
+
+       if ((! should_fail)); then
+               echo $target
+       else
+               echo $((target + 1))
+       fi
+}

diff --git a/tools/testing/selftests/drivers/net/mlxsw/tc_police_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/tc_police_scale.sh
new file mode 100644 (file)
index 0000000..4b96561
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/tc_police_scale.sh
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: GPL-2.0
+
+TC_POLICE_NUM_NETIFS=2
+
+tc_police_h1_create()
+{
+       simple_if_init $h1
+}
+
+tc_police_h1_destroy()
+{
+       simple_if_fini $h1
+}
+
+tc_police_switch_create()
+{
+       simple_if_init $swp1
+       tc qdisc add dev $swp1 clsact
+}
+
+tc_police_switch_destroy()
+{
+       tc qdisc del dev $swp1 clsact
+       simple_if_fini $swp1
+}
+
+tc_police_rules_create()
+{
+       local count=$1; shift
+       local should_fail=$1; shift
+
+       TC_POLICE_BATCH_FILE="$(mktemp)"
+
+       for ((i = 0; i < count; ++i)); do
+               cat >> $TC_POLICE_BATCH_FILE <<-EOF
+                       filter add dev $swp1 ingress \
+                               prot ip \
+                               flower skip_sw \
+                               action police rate 10mbit burst 100k \
+                               conform-exceed drop/ok
+               EOF
+       done
+
+       tc -b $TC_POLICE_BATCH_FILE
+       check_err_fail $should_fail $? "Rule insertion"
+}
+
+__tc_police_test()
+{
+       local count=$1; shift
+       local should_fail=$1; shift
+
+       tc_police_rules_create $count $should_fail
+
+       offload_count=$(tc filter show dev $swp1 ingress | grep in_hw | wc -l)
+       ((offload_count == count))
+       check_err_fail $should_fail $? "tc police offload count"
+}
+
+tc_police_test()
+{
+       local count=$1; shift
+       local should_fail=$1; shift
+
+       if ! tc_offload_check $TC_POLICE_NUM_NETIFS; then
+               check_err 1 "Could not test offloaded functionality"
+               return
+       fi
+
+       __tc_police_test $count $should_fail
+}
+
+tc_police_setup_prepare()
+{
+       h1=${NETIFS[p1]}
+       swp1=${NETIFS[p2]}
+
+       vrf_prepare
+
+       tc_police_h1_create
+       tc_police_switch_create
+}
+
+tc_police_cleanup()
+{
+       pre_cleanup
+
+       tc_police_switch_destroy
+       tc_police_h1_destroy
+
+       vrf_cleanup
+}