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Date: Sun, 10 May 2026 09:52:46 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: =?UTF-8?B?w43DsWlnbw==?= Huguet <ihuguet@riseup.net>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>, "David S . Miller"
 <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Paolo Abeni
 <pabeni@redhat.com>, Shuah Khan <shuah@kernel.org>, Sabrina Dubroca
 <sd@queasysnail.net>, Filip Pokryvka <fpokryvk@redhat.com>,
 netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-kselftest@vger.kernel.org
Subject: Re: [PATCH net-next 0/5] netdevsim: get link via ethtool, set via
 sysfs
Message-ID: <20260510095246.5c8f6d0b@kernel.org>
In-Reply-To: <20260510164337.7611-1-ihuguet@riseup.net>
References: <20260510164337.7611-1-ihuguet@riseup.net>
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On Sun, 10 May 2026 18:43:32 +0200 =C3=8D=C3=B1igo Huguet wrote:
> Allow to read the carrier status of a netdevsim device via ethtool, like
> most of Ethernet devices allow.
>=20
> Also, allow to set its carrier status via sysfs. Currently it's only
> possible by linking a peer device and setting its admin state to
> UP/DOWN. By editing the carrier status via sysfs tests that need to
> check carrier related stuff may be simpler.
>=20
> The third patch add the proper selftest for both things, and the fourth
> and fifth fix a few small bugs in the selftest itself.

Could you please explain your motivation? Feels quite trivial,
so it's not immediately obvious why we need tests.