linux-kernel - Re: [PATCH v2 net-next 20/22] net: dsa: sja1105: Reject unsupported link modes for AN

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Date:   Tue, 9 Apr 2019 19:09:25 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>, vivien.didelot@...il.com,
        andrew@...n.ch, davem@...emloft.net
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        georg.waibel@...sor-technik.de
Subject: Re: [PATCH v2 net-next 20/22] net: dsa: sja1105: Reject unsupported
 link modes for AN



On 4/9/2019 5:56 PM, Vladimir Oltean wrote:
> Ethernet flow control:
> 
> The switch MAC does not consume, nor does it emit pause frames. It
> simply forwards them as any other Ethernet frame (and since the DMAC is,
> per IEEE spec, 01-80-C2-00-00-01, it means they are filtered as
> link-local traffic and forwarded to the CPU, which can't do anything
> useful with them).
> 
> Duplex:
> 
> There is no duplex setting in the SJA1105 MAC. It is known to forward
> traffic at line rate on the same port in both directions. Therefore it
> must be that it only supports full duplex.
> 
> Signed-off-by: Vladimir Oltean <olteanv@...il.com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian