Add a selftest that verifies drivers properly report device information through the devlink info interface. This test validates:
- devlink dev info command succeeds - driver name is reported and matches ethtool output - at least one version or serial_number is reported The output format matches what NIPA CI uses for device regression tracking, helping maintainers identify pass/fail status changes due to FW updates. Example usage: sudo NETIF=eth0 ./tools/testing/selftests/drivers/net/hw/devlink_info.sh INFO: driver: idpf INFO: serial_number: 00-a0-c9-ff-ff-23-45-67 TEST: devlink info [ OK ] Reviewed-by: Przemek Kitszel <[email protected]> Reviewed-by: Aleksandr Loktionov <[email protected]> Link: https://github.com/linux-netdev/nipa/wiki/Netdev-CI-system#device-information Signed-off-by: Paul Greenwalt <[email protected]> --- .../testing/selftests/drivers/net/hw/Makefile | 1 + .../selftests/drivers/net/hw/devlink_info.sh | 119 ++++++++++++++++++ 2 files changed, 120 insertions(+) create mode 100755 tools/testing/selftests/drivers/net/hw/devlink_info.sh diff --git a/tools/testing/selftests/drivers/net/hw/Makefile b/tools/testing/selftests/drivers/net/hw/Makefile index 78bb0169350b..edd353f27a39 100644 --- a/tools/testing/selftests/drivers/net/hw/Makefile +++ b/tools/testing/selftests/drivers/net/hw/Makefile @@ -19,6 +19,7 @@ TEST_GEN_FILES := \ TEST_PROGS = \ csum.py \ + devlink_info.sh \ devlink_rate_cross_esw.py \ devlink_rate_tc_bw.py \ devmem.py \ diff --git a/tools/testing/selftests/drivers/net/hw/devlink_info.sh b/tools/testing/selftests/drivers/net/hw/devlink_info.sh new file mode 100755 index 000000000000..b2ee880590c4 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/devlink_info.sh @@ -0,0 +1,119 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test devlink info support +# +# This test verifies that the driver properly reports device information +# through the devlink info interface. The output format matches what +# NIPA CI uses for regression tracking (see Device information section +# at https://github.com/linux-netdev/nipa/wiki/Netdev-CI-system). +# +# Validates: +# - devlink dev info command succeeds +# - driver name is reported and matches ethtool +# - at least one version or serial_number is reported +# - serial_number is logged if present +# +# Usage: +# NETIF=eth0 ./devlink_info.sh + +lib_dir=$(dirname "$0")/../../../net + +ALL_TESTS="devlink_info_test" +source "$lib_dir"/lib.sh + +require_command devlink +require_command jq +require_command ethtool + +DL_HANDLE="" + +setup_prepare() +{ + # Try to get devlink handle from devlink port first + DL_HANDLE=$(devlink -j port show 2>/dev/null | + jq -r --arg netif "$NETIF" \ + '.port | to_entries[] | + select(.value.netdev == $netif) | .key' 2>/dev/null | + cut -d/ -f1-2) + + # Fallback: get PCI address from ethtool and check if devlink device exists + if [ -z "$DL_HANDLE" ]; then + local bus_info + bus_info=$(ethtool -i "$NETIF" 2>/dev/null | awk '/^bus-info:/ {print $2}') + if [ -n "$bus_info" ]; then + DL_HANDLE="pci/$bus_info" + # Verify this devlink device exists + if ! devlink dev show "$DL_HANDLE" &>/dev/null; then + DL_HANDLE="" + fi + fi + fi + + if [ -z "$DL_HANDLE" ]; then + echo "SKIP: Could not find devlink handle for $NETIF" + exit $ksft_skip + fi +} + +info_get() +{ + local name + + name=$1 + cmd_jq "devlink dev info $DL_HANDLE -j" ".[][][\"$name\"]" "-e" +} + +has_any_version() +{ + local info + info=$(devlink -j dev info $DL_HANDLE) + + # Check if any version category exists and has at least one entry + echo "$info" | jq -e '.[][].versions | length > 0' > /dev/null 2>&1 +} + +devlink_info_test() +{ + RET=0 + + # Test devlink info command succeeds + devlink dev info $DL_HANDLE > /dev/null + check_err $? "devlink dev info failed for $DL_HANDLE" + + # Test driver name is reported + local driver + driver=$(info_get "driver") + check_err $? "Failed to get driver name" + + # Verify driver matches ethtool output + local expected_driver + expected_driver=$(ethtool -i "$NETIF" | awk '/^driver:/ {print $2}') + check_err $? "Failed to get driver from ethtool" + if [ -z "$expected_driver" ]; then + check_err 1 "Failed to get driver from ethtool" + fi + if [ "$driver" != "$expected_driver" ]; then + check_err 1 "Driver mismatch: devlink='$driver' ethtool='$expected_driver'" + else + log_info "driver: $driver" + fi + + # Test at least one version OR serial_number is reported (needed for device tracking) + local serial + serial=$(info_get "serial_number" 2>/dev/null) + if [ -n "$serial" ]; then + log_info "serial_number: $serial" + fi + + if ! has_any_version && [ -z "$serial" ]; then + check_err 1 "No versions or serial_number reported" + fi + + log_test "devlink info" +} + +setup_prepare +tests_run + +exit $EXIT_STATUS -- 2.52.0
