linux-kernel - Re: [PATCH v7 net-next 2/3] selftests: net: Add on/off checks for non-fixed features of interface

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Message-ID: <20240815130353.GB632411@kernel.org>
Date: Thu, 15 Aug 2024 14:03:53 +0100
From: Simon Horman <horms@...nel.org>
To: Abhinav Jain <jain.abhinav177@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, shuah@...nel.org, netdev@...r.kernel.org,
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org, javier.carrasco.cruz@...il.com
Subject: Re: [PATCH v7 net-next 2/3] selftests: net: Add on/off checks for
 non-fixed features of interface

On Thu, Aug 15, 2024 at 04:29:23PM +0530, Abhinav Jain wrote:
> Implement on/off testing for all non-fixed features via while loop.
> Save the initial state so that it can be restored after on/off checks.
> 
> Signed-off-by: Abhinav Jain <jain.abhinav177@...il.com>
> ---
>  tools/testing/selftests/net/netdevice.sh | 37 +++++++++++++++++++++++-
>  1 file changed, 36 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/net/netdevice.sh b/tools/testing/selftests/net/netdevice.sh
> index 0c32950fdd17..50f7b9d1163d 100755
> --- a/tools/testing/selftests/net/netdevice.sh
> +++ b/tools/testing/selftests/net/netdevice.sh
> @@ -124,7 +124,42 @@ kci_netdev_ethtool()
>  		return 1
>  	fi
>  	echo "PASS: $netdev: ethtool list features"
> -	#TODO for each non fixed features, try to turn them on/off
> +
> +	while read -r FEATURE VALUE FIXED; do
> +		[ "$FEATURE" != "Features" ] || continue # Skip "Features"
> +		[ "$FIXED" != "[fixed]" ] || continue # Skip fixed features
> +		feature="${FEATURE%:*}"
> +
> +		initial_state=$(ethtool -k "$netdev" | grep "$feature:" \
> +			| awk '{print $2}')

Hi Abhinav,

Isn't the value being read into $initial_state here already present in $VALUE?

> +		ethtool --offload "$netdev" "$feature" off
> +		if [ $? -eq 0 ]; then
> +			echo "PASS: $netdev: Turned off feature: $feature"
> +		else
> +			echo "FAIL: $netdev: Failed to turn off feature:" \
> +				"$feature"
> +		fi
> +
> +		ethtool --offload "$netdev" "$feature" on
> +		if [ $? -eq 0 ]; then
> +			echo "PASS: $netdev: Turned on feature: $feature"
> +		else
> +			echo "FAIL: $netdev: Failed to turn on feature:" \
> +				"$feature"
> +		fi
> +
> +		#restore the feature to its initial state
> +		ethtool --offload "$netdev" "$feature" "$initial_state"
> +		if [ $? -eq 0 ]; then
> +			echo "PASS: $netdev: Restore feature $feature" \
> +				"to initial state $initial_state"
> +		else
> +			echo "FAIL: $netdev: Failed to restore feature" \
> +				"$feature to default $initial_state"
> +		fi
> +
> +	done < "$TMP_ETHTOOL_FEATURES"
> +
>  	rm "$TMP_ETHTOOL_FEATURES"
>  
>  	kci_netdev_ethtool_test 74 'dump' "ethtool -d $netdev"
> -- 
> 2.34.1
> 
>