netdev - Re: [net-next 05/10] igb: Update igb to use a path similar to ixgbe to determine when to stop Tx

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Message-Id: <20130208.141854.2122874496462368419.davem@davemloft.net>
Date:	Fri, 08 Feb 2013 14:18:54 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	alexander.h.duyck@...el.com
Cc:	eric.dumazet@...il.com, jeffrey.t.kirsher@...el.com,
	netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com
Subject: Re: [net-next 05/10] igb: Update igb to use a path similar to
 ixgbe to determine when to stop Tx

From: Alexander Duyck <alexander.h.duyck@...el.com>
Date: Fri, 08 Feb 2013 09:11:10 -0800

> For igb the IGB_MAX_DATA_PER_TXD is 32K as well.  So if I am not
> mistaken we should be fine.  The only time we risk exceeding that is
> if we have 64K page size.  It sounds like we may need to work in the
> ixgbe driver though since I believe the limit for it is only 16K per
> descriptor.
> 
> I will also submit an update for this patch that replaces PAGE_SIZE
> with NETDEV_FRAG_PAGE_MAX_SIZE in order to keep the two in sync.

I therefore expect a respin of this series from Jeff once the
update of this patch is resolved.

Thanks.
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