netdev - Re: [PATCH RFC 0/2] veth, bridge, and GSO maximums

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Message-Id: <20171130.104721.823106331151241632.davem@davemloft.net>
Date:   Thu, 30 Nov 2017 10:47:21 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     stephen@...workplumber.org
Cc:     netdev@...r.kernel.org, sthemmin@...rosoft.com
Subject: Re: [PATCH RFC 0/2] veth, bridge, and GSO maximums

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Sun, 26 Nov 2017 10:17:47 -0800

> This pair of patchesimproves the performance when running
> containers in an environment where underlying device has lower
> GSO maximum (such as Azure).
> 
> With containers a veth pair is created and one end is attached
> to the bridge device. The bridge device correctly reports
> computes GSO parameters that are the minimum of the lower devices.
> 
> The problem is that the other end of the veth device (in container)
> reports the full GSO size. This patch propogates the upper
> (bridge device) parameters to the other end of the veth device.
> 
> Please consider it as alternative to the sysfs GSO changes.

I like this approach a lot, please resubmit this formally.