linux-kernel - Re: [PATCH] selftests: net: Add on/off checks for network interface non fixed features

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Date: Sun,  9 Jun 2024 13:28:32 +0000
From: Abhinav Jain <jain.abhinav177@...il.com>
To: horms@...nel.org
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	jain.abhinav177@...il.com,
	javier.carrasco.cruz@...il.com,
	kuba@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	netdev@...r.kernel.org,
	pabeni@...hat.com,
	shuah@...nel.org,
	skhan@...uxfoundation.org
Subject: Re: [PATCH] selftests: net: Add on/off checks for network interface non fixed features

On Fri, 7 Jun 2024 19:01:27 +0100, Simon Horman wrote:

> Hi Abhinav,
>
> I suspect this will now only report a failure if tail fails,
> but ignore ethtool failures.

Hi Simon,

I agree, I missed this part earlier. After taking other suggestion
into account, we don't need this tail and I have removed it.

> Shellcheck warns that the above reads words rather than lines,
> and recommends using read instead.
>
> I think that is ok, because the construction reduces lines to single words.
> But it does seem a bit awkward to call grep, awk and sed for this.
>
> I wonder if the following construction nicer:
>
> while read -r FEATURE VALUE FIXED; do
> 	[ "$FEAT" != "Features" ] || continue # Skip "Features" line
> 	[ "$FIXED" != "[fixed]" ] || continue # Skip fixed features
> 	feature="${FEATURE%:*}"
> 	...
> done < "$TMP_ETHTOOL_FEATURES"

I have re-submitted a v2 of patch here keeping the above change:
https://lore.kernel.org/all/20240609132124.51683-1-jain.abhinav177@gmail.com/

Please review. Thank you.