netdev - RE: [PATCHv4 net-next 2/3] sunvnet: allow admin to set sunvnet MTU

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Date:	Wed, 17 Sep 2014 09:07:04 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'David L Stevens' <david.stevens@...cle.com>,
	David Miller <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCHv4 net-next 2/3] sunvnet: allow admin to set sunvnet MTU

From: David L Stevens
> On 09/15/2014 08:35 PM, David L Stevens wrote:
> 
> >   */
> >  #define VNET_TX_TIMEOUT			(5 * HZ)
> >
> > -#define VNET_MAXPACKET			1518ULL /* ETH_FRAMELEN + VLAN_HDR */
> > +#define VNET_MAXPACKET			65553ULL /* 64K-1  +ETH HDR +VLAN HDR*/

That would be better as the expression (0xffffull + 14 + 4).

> >  #define VNET_TX_RING_SIZE		512
> >  #define VNET_TX_WAKEUP_THRESH(dr)	((dr)->pending / 4)

	David



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