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Date: Mon, 31 Aug 2026 15:08:18 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Hangbin Liu <hangbin.liu@linux.dev>
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>, netdev@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Hangbin Liu
 <liuhangbin@kylinos.cn>
Subject: Re: [PATCH net-next 1/2] netdevsim: add link speed support
Message-ID: <20260831150818.660de896@kernel.org>
In-Reply-To: <20260831-nsim_speed-v1-1-7a651ee65738@kylinos.cn>
References: <20260831-nsim_speed-v1-0-7a651ee65738@kylinos.cn>
	<20260831-nsim_speed-v1-1-7a651ee65738@kylinos.cn>
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On Mon, 31 Aug 2026 11:28:10 +0800 Hangbin Liu wrote:
> Add ethtool get/set_link_ksettings callbacks to netdevsim so the simulated
> link speed and duplex can be queried and configured from userspace.
> 
> Move NSIM_LINK_SPEED_MAX and NSIM_LINK_SPEED_UNIT from dev.c to netdevsim.h
> so they are available to both the devlink rate path and the new ethtool
> code. The set callback rejects speeds exceeding NSIM_LINK_SPEED_MAX.
> 
> The default link speed is set to SPEED_5000 with DUPLEX_FULL, matching the
> existing NSIM_LINK_SPEED_MAX definition.

This breaks TDC which uses netdevsim for taprio testing.
You posted 2 series for net-next and both broke tests.
Please try harder to test stuff locally.
Matt added support for Docker to NIPA so you should be able
to repro all ksfts locally. If something doesn't work please 
report back.