selftests: mlxsw: Add a scale test for physical ports
authorDanielle Ratson <danieller@nvidia.com>
Thu, 21 Jan 2021 13:10:24 +0000 (15:10 +0200)
committerJakub Kicinski <kuba@kernel.org>
Sat, 23 Jan 2021 04:42:13 +0000 (20:42 -0800)
Query the maximum number of supported physical ports using devlink-resource
and test that this number can be reached by splitting each of the
splittable ports to its width. Test that an error is returned in case
the maximum number is exceeded.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
tools/testing/selftests/drivers/net/mlxsw/port_scale.sh [new file with mode: 0644]
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_scale.sh [new file with mode: 0644]
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
tools/testing/selftests/drivers/net/mlxsw/spectrum/port_scale.sh [new file with mode: 0644]
tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh

diff --git a/tools/testing/selftests/drivers/net/mlxsw/port_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/port_scale.sh
new file mode 100644 (file)
index 0000000..f813ffe
--- /dev/null
@@ -0,0 +1,64 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test for physical ports resource. The test splits each splittable port
+# to its width and checks that eventually the number of physical ports equals
+# the maximum number of physical ports.
+
+PORT_NUM_NETIFS=0
+
+port_setup_prepare()
+{
+       :
+}
+
+port_cleanup()
+{
+       pre_cleanup
+
+       for port in "${unsplit[@]}"; do
+               devlink port unsplit $port
+               check_err $? "Did not unsplit $netdev"
+       done
+}
+
+split_all_ports()
+{
+       local should_fail=$1; shift
+       local -a unsplit
+
+       # Loop over the splittable netdevs and create tuples of netdev along
+       # with its width. For example:
+       # '$netdev1 $count1 $netdev2 $count2...', when:
+       # $netdev1-2 are splittable netdevs in the device, and
+       # $count1-2 are the netdevs width respectively.
+       while read netdev count <<<$(
+               devlink -j port show |
+               jq -r '.[][] | select(.splittable==true) | "\(.netdev) \(.lanes)"'
+               )
+               [[ ! -z $netdev ]]
+       do
+               devlink port split $netdev count $count
+               check_err $? "Did not split $netdev into $count"
+               unsplit+=( "${netdev}s0" )
+       done
+}
+
+port_test()
+{
+       local max_ports=$1; shift
+       local should_fail=$1; shift
+
+       split_all_ports $should_fail
+
+       occ=$(devlink -j resource show $DEVLINK_DEV \
+             | jq '.[][][] | select(.name=="physical_ports") |.["occ"]')
+
+       [[ $occ -eq $max_ports ]]
+       if [[ $should_fail -eq 0 ]]; then
+               check_err $? "Mismatch ports number: Expected $max_ports, got $occ."
+       else
+               check_err_fail $should_fail $? "Reached more ports than expected"
+       fi
+
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/port_scale.sh
new file mode 100644 (file)
index 0000000..0b71dfb
--- /dev/null
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../port_scale.sh
+
+port_get_target()
+{
+       local should_fail=$1
+       local target
+
+       target=$(devlink_resource_size_get physical_ports)
+
+       if ((! should_fail)); then
+               echo $target
+       else
+               echo $((target + 1))
+       fi
+}
index d7cf33a..4a1c932 100755 (executable)
@@ -28,7 +28,7 @@ cleanup()
 
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre tc_police"
+ALL_TESTS="router tc_flower mirror_gre tc_police port"
 for current_test in ${TESTS:-$ALL_TESTS}; do
        source ${current_test}_scale.sh
 
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/port_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/port_scale.sh
new file mode 100644 (file)
index 0000000..0b71dfb
--- /dev/null
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../port_scale.sh
+
+port_get_target()
+{
+       local should_fail=$1
+       local target
+
+       target=$(devlink_resource_size_get physical_ports)
+
+       if ((! should_fail)); then
+               echo $target
+       else
+               echo $((target + 1))
+       fi
+}
index 43f6624..087a884 100755 (executable)
@@ -22,7 +22,7 @@ cleanup()
 devlink_sp_read_kvd_defaults
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre tc_police"
+ALL_TESTS="router tc_flower mirror_gre tc_police port"
 for current_test in ${TESTS:-$ALL_TESTS}; do
        source ${current_test}_scale.sh