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

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Message-ID: <12984648.7CKVgBs7pu@wuerfel>
Date:	Sun, 22 Nov 2015 21:06:34 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Marcin Wojtas <mw@...ihalf.com>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, thomas.petazzoni@...e-electrons.com,
	andrew@...n.ch, linux@....linux.org.uk, jason@...edaemon.net,
	myair@...vell.com, jaz@...ihalf.com, simon.guinot@...uanux.org,
	xswang@...vell.com, nadavh@...vell.com, alior@...vell.com,
	tn@...ihalf.com, gregory.clement@...e-electrons.com,
	nitroshift@...oo.com, davem@...emloft.net,
	sebastian.hesselbarth@...il.com
Subject: Re: [PATCH 00/13] mvneta Buffer Management and enhancements

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.

	Arnd
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