netdev - Re: [PATCH 04/15] octeontx2-af: Ingress and egress pause frame configuration

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Message-ID: <20191118133303.38d7bfbc@cakuba.netronome.com>
Date:   Mon, 18 Nov 2019 13:33:03 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     sunil.kovvuri@...il.com
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        Geetha sowjanya <gakula@...vell.com>,
        Sunil Goutham <sgoutham@...vell.com>
Subject: Re: [PATCH 04/15] octeontx2-af: Ingress and egress pause frame
 configuration

On Sun, 17 Nov 2019 21:44:15 +0530, sunil.kovvuri@...il.com wrote:
> From: Geetha sowjanya <gakula@...vell.com>
> 
> Pause frames can be generated when NIX/NPA asserts backpressure
> due to insufficient resources. This patch enables generation
> of pause frames by CGX. Also enabled processing of received
> pause frames and asserting backpressure on NIX transmit path.


I'd expect pause frames to be configured via ethtool, you say:
 
> Also added mailbox config messages for PF/VF to enable/disable
> flow control any time.

Who's controlling the mbox? Do you have any public docs for this driver?