[PATCH net-next 08/10] selftests: mlxsw: Add scale test for port ranges

[Petr Machata <petrm@nvidia.com>]

From: Ido Schimmel <idosch@nvidia.com>

Query the maximum number of supported port range registers using
devlink-resource and test that this number can be reached by configuring
tc filters with different port ranges. Test that an error is returned in
case the maximum number is exceeded.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 .../drivers/net/mlxsw/port_range_scale.sh     | 95 +++++++++++++++++++
 .../net/mlxsw/spectrum-2/port_range_scale.sh  |  1 +
 .../net/mlxsw/spectrum-2/resource_scale.sh    |  1 +
 .../net/mlxsw/spectrum/port_range_scale.sh    | 16 ++++
 .../net/mlxsw/spectrum/resource_scale.sh      |  1 +
 5 files changed, 114 insertions(+)
 create mode 100644 tools/testing/selftests/drivers/net/mlxsw/port_range_scale.sh
 create mode 120000 tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_range_scale.sh
 create mode 100644 tools/testing/selftests/drivers/net/mlxsw/spectrum/port_range_scale.sh

diff --git a/tools/testing/selftests/drivers/net/mlxsw/port_range_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/port_range_scale.sh
new file mode 100644
index 000000000000..2a70840ff14b
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/port_range_scale.sh
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: GPL-2.0
+
+PORT_RANGE_NUM_NETIFS=2
+
+port_range_h1_create()
+{
+	simple_if_init $h1
+}
+
+port_range_h1_destroy()
+{
+	simple_if_fini $h1
+}
+
+port_range_switch_create()
+{
+	simple_if_init $swp1
+	tc qdisc add dev $swp1 clsact
+}
+
+port_range_switch_destroy()
+{
+	tc qdisc del dev $swp1 clsact
+	simple_if_fini $swp1
+}
+
+port_range_rules_create()
+{
+	local count=$1; shift
+	local should_fail=$1; shift
+	local batch_file="$(mktemp)"
+
+	for ((i = 0; i < count; ++i)); do
+		cat >> $batch_file <<-EOF
+			filter add dev $swp1 ingress \
+				prot ipv4 \
+				pref 1000 \
+				flower skip_sw \
+				ip_proto udp dst_port 1-$((100 + i)) \
+				action pass
+		EOF
+	done
+
+	tc -b $batch_file
+	check_err_fail $should_fail $? "Rule insertion"
+
+	rm -f $batch_file
+}
+
+__port_range_test()
+{
+	local count=$1; shift
+	local should_fail=$1; shift
+
+	port_range_rules_create $count $should_fail
+
+	offload_count=$(tc -j filter show dev $swp1 ingress |
+			jq "[.[] | select(.options.in_hw == true)] | length")
+	((offload_count == count))
+	check_err_fail $should_fail $? "port range offload count"
+}
+
+port_range_test()
+{
+	local count=$1; shift
+	local should_fail=$1; shift
+
+	if ! tc_offload_check $PORT_RANGE_NUM_NETIFS; then
+		check_err 1 "Could not test offloaded functionality"
+		return
+	fi
+
+	__port_range_test $count $should_fail
+}
+
+port_range_setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	swp1=${NETIFS[p2]}
+
+	vrf_prepare
+
+	port_range_h1_create
+	port_range_switch_create
+}
+
+port_range_cleanup()
+{
+	pre_cleanup
+
+	port_range_switch_destroy
+	port_range_h1_destroy
+
+	vrf_cleanup
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_range_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_range_scale.sh
new file mode 120000
index 000000000000..bd670d9dc4e5
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_range_scale.sh
@@ -0,0 +1 @@
+../spectrum/port_range_scale.sh
\ No newline at end of file
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 688338bbeb97..a88d8a8c85f2 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
@@ -33,6 +33,7 @@ ALL_TESTS="
 	port
 	rif_mac_profile
 	rif_counter
+	port_range
 "
 
 for current_test in ${TESTS:-$ALL_TESTS}; do
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/port_range_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/port_range_scale.sh
new file mode 100644
index 000000000000..d0847e8ea270
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/port_range_scale.sh
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../port_range_scale.sh
+
+port_range_get_target()
+{
+	local should_fail=$1; shift
+	local target
+
+	target=$(devlink_resource_size_get port_range_registers)
+
+	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 95d9f710a630..f981c957f097 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
@@ -30,6 +30,7 @@ ALL_TESTS="
 	port
 	rif_mac_profile
 	rif_counter
+	port_range
 "
 
 for current_test in ${TESTS:-$ALL_TESTS}; do
-- 
2.40.1