netdev - Re: [PATCH v4] Ethernet driver for the WIZnet W5300 chip

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Message-Id: <20120328.022244.1736489266298072606.davem@davemloft.net>
Date:	Wed, 28 Mar 2012 02:22:44 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	msink@...monline.ru
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v4] Ethernet driver for the WIZnet W5300 chip

From: Mike Sinkovsky <msink@...monline.ru>
Date: Wed, 28 Mar 2012 11:52:43 +0600

> 28.03.2012 8:35, David Miller wrote:
> 
> From Documentation/netdev-features.txt:
> 
>>NETIF_F_VLAN_CHALLENGED should be set for devices which can't cope
>>with VLAN
>>headers. Some drivers set this because the cards can't handle the
>>bigger MTU.
>>[FIXME: Those cases could be fixed in VLAN code by allowing only
>>reduced-MTU
>>VLANs. This may be not useful, though.]
> 
> My case is exactly what is here in FIXME comment - yes, this chip
> cannot handle full size MTU for VLANs, and TCP/IP traffic don't work
> well over this VLAN.

I disagree with the comment in that document, I didn't write it.
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