linux-kernel - Re: [PATCH net-next] net: dsa: mv88e6xxx: avoid some redundant vtu load/purge operations

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Message-ID: <20190723134037.GA2381@lunn.ch>
Date:   Tue, 23 Jul 2019 15:40:37 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Rasmus Villemoes <Rasmus.Villemoes@...vas.se>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] net: dsa: mv88e6xxx: avoid some redundant vtu
 load/purge operations

On Mon, Jul 22, 2019 at 11:37:26PM +0000, Rasmus Villemoes wrote:
> We have an ERPS (Ethernet Ring Protection Switching) setup involving
> mv88e6250 switches which we're in the process of switching to a BSP
> based on the mainline driver. Breaking any link in the ring works as
> expected, with the ring reconfiguring itself quickly and traffic
> continuing with almost no noticable drops. However, when plugging back
> the cable, we see 5+ second stalls.

Hi Rasmus

I would prefer Vivien reviews this patch. But he is away at the
moment. Are you O.K. to wait a few days?

	Andrew