netdev - Re: [PATCH 1/1] TX throttling bug-fixing patch of AX88179

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Date:	Mon, 22 Jul 2013 19:38:32 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Grant Grundler <grundler@...gle.com>
CC:	Eric Dumazet <eric.dumazet@...il.com>,
	Freddy Xin <freddy@...x.com.tw>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ASIX Louis [蘇威陸] 
	<louis@...x.com.tw>, "Allan Chou" <allan@...x.com.tw>
Subject: Re: [PATCH 1/1] TX throttling bug-fixing patch of AX88179_178A

On Mon, 2013-07-22 at 11:29 -0700, Grant Grundler wrote:
> On Mon, Jul 22, 2013 at 10:07 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> ...
> > I guess that if a driver does not advertise NETIF_F_SG, this
> > skb_linearize() call is not needed : All frames reaching your xmit
> > function should already be linear
> 
> As Ben Hutchings pointed out, hw_features is still setting this...but
> I'm not sure how that matters.
> 
> ax88179_set_features() doesn't allow setting SG or TSO features.  But
> I expect it would be "not too difficult" to add such that ethtool
> could set those features after boot.
[...]

It already can.  That's what putting feature flags in hw_features does.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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