linux-kernel - Re: [PATCH net-next v3 5/5] net-next: dsa: add dsa support for Mediatek MT7530 switch

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Message-ID: <hn6gvd-qp1.ln1@banana.localnet>
Date:   Wed, 24 May 2017 14:17:39 +0300
From:   "Andrey Jr. Melnikov" <temnota.am@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next v3 5/5] net-next: dsa: add dsa support for Mediatek MT7530 switch

In gmane.linux.kernel sean.wang@...iatek.com wrote:
> From: Sean Wang <sean.wang@...iatek.com>

> MT7530 is a 7-ports Gigabit Ethernet Switch that could be found on
> Mediatek router platforms such as MT7623A or MT7623N platform which
> includes 7-port Gigabit Ethernet MAC and 5-port Gigabit Ethernet PHY.
> Among these ports, The port from 0 to 4 are the user ports connecting
> with the remote devices while the port 5 and 6 are the CPU ports
> connecting into Mediatek Ethernet GMAC.

> For port 6, it can communicate with the CPU via Mediatek Ethernet GMAC
> through either the TRGMII or RGMII which could be controlled by phy-mode
> in the dt-bindings to specify which mode is preferred to use. And for
> port 5, only RGMII can be specified. However, currently, only port 6 is
> being supported in this DSA driver.

> The driver is made with the reference to qca8k and other existing DSA
> driver. The most of the essential callbacks of the DSA are already
> support in the driver, including tag insert for user port distinguishing,
> port control, bridge offloading, STP setup and ethtool operation to allow
> DSA to model each user port into a standalone netdevice as the other DSA
> driver had done.

What about JUMBO frames and large MTU support? devlink support?