linux-kernel - Re: [PATCH 00/13] mvneta Buffer Management and enhancements

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Message-ID: <CAPv3WKfqpBgjERwU3VTPeM7NRkSzz=Ny13WhLvbT_yHfaG1nWw@mail.gmail.com>
Date:	Sun, 22 Nov 2015 22:37:56 +0100
From:	Marcin Wojtas <mw@...ihalf.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Yair Mahalalel <myair@...vell.com>,
	Grzegorz Jaszczyk <jaz@...ihalf.com>,
	Simon Guinot <simon.guinot@...uanux.org>,
	Evan Wang <xswang@...vell.com>, nadavh@...vell.com,
	Lior Amsalem <alior@...vell.com>,
	Tomasz Nowicki <tn@...ihalf.com>,
	Gregory Clément 
	<gregory.clement@...e-electrons.com>, nitroshift@...oo.com,
	"David S. Miller" <davem@...emloft.net>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH 00/13] mvneta Buffer Management and enhancements

Arnd,

2015-11-22 21:06 GMT+01:00 Arnd Bergmann <arnd@...db.de>:
> On Sunday 22 November 2015 08:53:46 Marcin Wojtas wrote:
>>
>> 3. Optimisations - concatenating TX descriptors' flush, basing on
>> xmit_more support and combined approach for finalizing egress processing.
>> Thanks to HR timer buffers can be released with small latency, which is
>> good for low transfer and small queues. Along with the timer, coalescing
>> irqs are used, whose threshold could be increased back to 15.
>>
>>
>
> If you are already reworking the TX path, it probably makes sense to
> support BQL as well, see the Marvell skge and sky2 drivers for examples
> using netdev_{tx_,}{sent,completed}_queue.
>

Good idea, I'll take a look.

Best regards,
Marcin
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