Files
linux/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
Petr Machata b8bfafe434 selftests: mlxsw: Add helpers for skipping selftests
A number of mlxsw-specific selftests currently detect whether they are run
on a compatible machine, and bail out silently when not. These tests are
however done in a somewhat impenetrable manner by directly comparing PCI
IDs against a blacklist or a whitelist, and bailing out silently if the
machine is not compatible.

Instead, add a helper, mlxsw_only_on_spectrum(), which allows specifying
the supported machines in a human-readable manner. If the current machine
is incompatible, the helper emits a SKIP message and returns an error code,
based on which the caller can gracefully bail out in a suitable way. This
allows a more readable conditions such as:

	mlxsw_only_on_spectrum 2+ || return

Convert all existing open-coded guards to the new helper. Also add two new
guards to do_mark_test() and do_drop_test(), which are supported only on
Spectrum-2+, but the corresponding check was not there.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-25 14:10:11 +01:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
##############################################################################
# Defines
if [[ ! -v MLXSW_CHIP ]]; then
MLXSW_CHIP=$(devlink -j dev info $DEVLINK_DEV | jq -r '.[][]["driver"]')
if [ -z "$MLXSW_CHIP" ]; then
echo "SKIP: Device $DEVLINK_DEV doesn't support devlink info command"
exit 1
fi
fi
MLXSW_SPECTRUM_REV=$(case $MLXSW_CHIP in
mlxsw_spectrum)
echo 1 ;;
mlxsw_spectrum*)
echo ${MLXSW_CHIP#mlxsw_spectrum} ;;
*)
echo "Couldn't determine Spectrum chip revision." \
> /dev/stderr ;;
esac)
mlxsw_on_spectrum()
{
local rev=$1; shift
local op="=="
local rev2=${rev%+}
if [[ $rev2 != $rev ]]; then
op=">="
fi
((MLXSW_SPECTRUM_REV $op rev2))
}
__mlxsw_only_on_spectrum()
{
local rev=$1; shift
local caller=$1; shift
local src=$1; shift
if ! mlxsw_on_spectrum "$rev"; then
log_test_skip $src:$caller "(Spectrum-$rev only)"
return 1
fi
}
mlxsw_only_on_spectrum()
{
local caller=${FUNCNAME[1]}
local src=${BASH_SOURCE[1]}
local rev
for rev in "$@"; do
if __mlxsw_only_on_spectrum "$rev" "$caller" "$src"; then
return 0
fi
done
return 1
}