netdev - Re: [PATCH netnext 04/16] net: aquantia: link interrupt handling functions

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Date:   Sat, 13 Apr 2019 20:10:23 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Igor Russkikh <Igor.Russkikh@...antia.com>,
        "David S . Miller" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Nikita Danilov <Nikita.Danilov@...antia.com>,
        Dmitry Bogdanov <Dmitry.Bogdanov@...antia.com>
Subject: Re: [PATCH netnext 04/16] net: aquantia: link interrupt handling
 functions

> If you just schedule a task from the hard irq handler, why not using
> a threaded interrupt?

Yes, i was just about to say that.

> And a further question because I worked on the Aquantia PHY driver:
> I assume the integrated PHY's are identical or at least very similar
> to the external ones like AQR107. Did you ever consider to switch
> the PHY handling part of this driver to phylib?  This may help to
> reduce complexity and code size of the driver.

Hi Heiner

I think this was discussed at the time the driver was first
submitted. Or it could of been the USB version. The first version did
actually allow access to PHY registers, and the MAC driver did poke
some of the registers.

My guess is, other operating systems don't have a suitable PHY
driver. So they pushed it all into firmware. As a result, they now
possibly have an inferior experience on Linux than if they used the
new PHY driver.

    Andrew