linux-kernel - Re: [PATCH net-next 00/20] net: dsa: distribute switch events

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Message-Id: <20170522.104557.1244582147577060590.davem@davemloft.net>
Date:   Mon, 22 May 2017 10:45:57 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     vivien.didelot@...oirfairelinux.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...oirfairelinux.com, f.fainelli@...il.com, andrew@...n.ch
Subject: Re: [PATCH net-next 00/20] net: dsa: distribute switch events

From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Date: Fri, 19 May 2017 17:00:35 -0400

> DSA is by nature the support for a switch fabric, which can be composed
> of a single, or multiple interconnected Ethernet switch chips.
> 
> The current DSA core behavior is to identify the slave port targeted by
> a request (e.g. adding a VLAN entry), and program the switch chip to
> which it belongs accordingly.
> 
> This is problematic in a multi-chip environment, since all chips of a
> fabric must be aware of most configuration changes. Here are some
> concrete examples in a 3-chip environment:
 ...
> This patch series uses the notification chain introduced for bridging,
> to notify not only bridge, but switchdev attributes and objects events
> to all switch chips of the fabric.

Andrew or Florian, can I get a review?

I audited the slave-->port transformations and they all look
good.