netdev - Re: [PATCH net] selftests: netdevsim: fix the udp_tunnel

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Date: Tue, 23 Jan 2024 09:27:17 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Jakub Kicinski <kuba@...nel.org>, davem@...emloft.net
Cc: netdev@...r.kernel.org, edumazet@...gle.com, shuah@...nel.org, 
	horms@...nel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net] selftests: netdevsim: fix the udp_tunnel_nic test

On Mon, 2024-01-22 at 22:05 -0800, Jakub Kicinski wrote:
> This test is missing a whole bunch of checks for interface
> renaming and one ifup. Presumably it was only used on a system
> with renaming disabled and NetworkManager running.
> 
> Fixes: 91f430b2c49d ("selftests: net: add a test for UDP tunnel info infra")
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
> CC: shuah@...nel.org
> CC: horms@...nel.org
> CC: linux-kselftest@...r.kernel.org
> ---
>  .../selftests/drivers/net/netdevsim/udp_tunnel_nic.sh    | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh b/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh
> index 4855ef597a15..f98435c502f6 100755
> --- a/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh
> +++ b/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh
> @@ -270,6 +270,7 @@ for port in 0 1; do
>  	echo 1 > $NSIM_DEV_SYS/new_port
>      fi
>      NSIM_NETDEV=`get_netdev_name old_netdevs`
> +    ifconfig $NSIM_NETDEV up

WoW! I initially thought the above was a typo, before noticing it's
actually consistent with the whole script :)

Do you think we should look at dropping ifconfig usage from self-tests?
I guess that in the long run most systems should not have such command
available in the default install.

In any case the patch LGTM.

Acked-by: Paolo Abeni <pabeni@...hat.com>

Cheers,

Paolo