linux-kernel - Re: [PATCH iwl-next] igc: enable HW vlan tag insertion/stripping by default

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Message-ID: <87sen9qq4i.fsf@kurt.kurt.home>
Date: Wed, 19 Mar 2025 11:19:41 +0100
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Rui Salvaterra <rsalvaterra@...il.com>, anthony.l.nguyen@...el.com,
 przemyslaw.kitszel@...el.com
Cc: edumazet@...gle.com, kuba@...nel.org, intel-wired-lan@...ts.osuosl.org,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Rui Salvaterra
 <rsalvaterra@...il.com>
Subject: Re: [PATCH iwl-next] igc: enable HW vlan tag insertion/stripping by
 default

On Thu Mar 13 2025, Rui Salvaterra wrote:
> This is enabled by default in other Intel drivers I've checked (e1000, e1000e,
> iavf, igb and ice). Fixes an out-of-the-box performance issue when running
> OpenWrt on typical mini-PCs with igc-supported Ethernet controllers and 802.1Q
> VLAN configurations, as ethtool isn't part of the default packages and sane
> defaults are expected.
>
> In my specific case, with an Intel N100-based machine with four I226-V Ethernet
> controllers, my upload performance increased from under 30 Mb/s to the expected
> ~1 Gb/s.
>
> Signed-off-by: Rui Salvaterra <rsalvaterra@...il.com>

Great, thanks a lot.

Reviewed-by: Kurt Kanzenbach <kurt@...utronix.de>

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