netdev - Re: [PATCH net-next 0/2] 802.1ad S-VLAN support

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Date:	Tue, 8 Nov 2011 00:18:13 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	David Lamparter <equinox@...c24.net>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 0/2] 802.1ad S-VLAN support

David Lamparter <equinox@...c24.net> :
[...]
> A nice side-effect would be that we can export this value in sysfs so
> the admin easily can see the hardware limitations. No more trial & error
> to find that r8169 (or was it forcedeth?) has the totally weird value of
> 7200... ("almost-jumbo-frames-but-not-quite")

Pong. This is legacy PCI 8169. 

r8169.c::rtl_chip_infos in current -git summarizes the situation.

It is partly a matter of size : one can't always enable Tx checksum and
jumbo frames at the same time for instance.

-- 
Ueimor
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