netdev - Re: [PATCH 1/2] [for 4.13] net: qcom/emac: disable flow control autonegotiation by default

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Date:   Tue, 1 Aug 2017 22:22:53 -0500
From:   Timur Tabi <timur@...eaurora.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] [for 4.13] net: qcom/emac: disable flow control
 autonegotiation by default

On 8/1/17 9:58 PM, Andrew Lunn wrote:
>   The PHY does not participate directly in flow control/pause frames except by
>   making sure that the SUPPORTED_Pause and SUPPORTED_AsymPause bits are set in
>   MII_ADVERTISE to indicate towards the link partner that the Ethernet MAC
>   controller supports such a thing. Since flow control/pause frames generation
>   involves the Ethernet MAC driver, it is recommended that this driver takes care
>   of properly indicating advertisement and support for such features by setting
>   the SUPPORTED_Pause and SUPPORTED_AsymPause bits accordingly. This can be done
>   either before or after phy_connect() and/or as a result of implementing the
>   ethtool::set_pauseparam feature.
> 
> So just check if the MAC driver is setting SUPPORTED_Pause and
> SUPPORTED_AsymPause.

I think this was covered in this thread: 
http://www.spinics.net/lists/netdev/msg408978.html

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