linux-kernel - Re: [RFC net-next 3/9] net: hns3: Add "port vlan table" information query function

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Message-ID: <20181204105554.GD741@lunn.ch>
Date:   Tue, 4 Dec 2018 11:55:54 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Salil Mehta <salil.mehta@...wei.com>
Cc:     David Miller <davem@...emloft.net>,
        "jakub.kicinski@...ronome.com" <jakub.kicinski@...ronome.com>,
        "Zhuangyuzeng (Yisen)" <yisen.zhuang@...wei.com>,
        "lipeng (Y)" <lipeng321@...wei.com>,
        "mehta.salil@...src.net" <mehta.salil@...src.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linuxarm <linuxarm@...wei.com>,
        Liuzhongzhu <liuzhongzhu@...wei.com>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>
Subject: Re: [RFC net-next 3/9] net: hns3: Add "port vlan table" information
 query function

> > > Adding debugfs files for basic switch concepts like MAC and VLAN tables
> > > seems like a bit of a stretch to me.  I wonder what others think.
> > 
> > Agreed.
> 
> 
> I was wondering how other vendors are solving this? One way I could 
> understand is to use "Switchdev" framework which in turn will expose
> entries to the kernel using the switch driver. In our NIC we don't
> have a proper switch and it cannot learn/age entries.

Your hardware is there to accelerate what linux can do in software.
How do we manage the software version of this feature?

> Also, on-SoC NIC contains other tables which might not have any standard
> user-space interface at all. What are your suggestions regarding that?

How are these tables map to software features the Linux stack
implements?

	Andrew