Test that PCI reset works correctly by verifying that only the expected
reset methods are supported and that after issuing the reset the ifindex
of the port changes.
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx>
---
.../selftests/drivers/net/mlxsw/pci_reset.sh | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100755 tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh
diff --git a/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh b/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh
new file mode 100755
index 000000000000..2ea22806d530
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/pci_reset.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test that PCI reset works correctly by verifying that only the expected reset
+# methods are supported and that after issuing the reset the ifindex of the
+# port changes.
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+ pci_reset_test
+"
+NUM_NETIFS=1
+source $lib_dir/lib.sh
+source $lib_dir/devlink_lib.sh
+
+pci_reset_test()
+{
+ RET=0
+
+ local bus=$(echo $DEVLINK_DEV | cut -d '/' -f 1)
+ local bdf=$(echo $DEVLINK_DEV | cut -d '/' -f 2)
+
+ if [ $bus != "pci" ]; then
+ check_err 1 "devlink device is not a PCI device"
+ log_test "pci reset"
+ return
+ fi
+
+ if [ ! -f /sys/bus/pci/devices/$bdf/reset_method ]; then
+ check_err 1 "reset is not supported"
+ log_test "pci reset"
+ return
+ fi
+
+ [[ $(cat /sys/bus/pci/devices/$bdf/reset_method) == "device_specific bus" ]]
+ check_err $? "only \"device_specific\" and \"bus\" reset methods should be supported"
+
+ local ifindex_pre=$(ip -j link show dev $swp1 | jq '.[]["ifindex"]')
+
+ echo 1 > /sys/bus/pci/devices/$bdf/reset
+ check_err $? "reset failed"
+
+ # Wait for udev to rename newly created netdev.
+ udevadm settle
+
+ local ifindex_post=$(ip -j link show dev $swp1 | jq '.[]["ifindex"]')
+
+ [[ $ifindex_pre != $ifindex_post ]]
+ check_err $? "reset not performed"
+
+ log_test "pci reset"
+}
+
+swp1=${NETIFS[p1]}
+tests_run
+
+exit $EXIT_STATUS
--
2.40.1
