From: Jeff Garzik <jeff@garzik.org>
To: Francois Romieu <romieu@fr.zoreil.com>
Cc: netdev@vger.kernel.org, "Séguier Régis" <rseguier@e-teleport.net>,
akpm@linux-foundation.org
Subject: Re: [PATCH 1/6] via-velocity: remove the bounce buffers
Date: Fri, 11 Jul 2008 01:14:04 -0400 [thread overview]
Message-ID: <4876EC1C.4080705@garzik.org> (raw)
In-Reply-To: <20080710220344.GB29764@electric-eye.fr.zoreil.com>
Francois Romieu wrote:
> Executive summary: the bounce buffers are in my way
>
> - they use something like a 64 * 1500 bytes area of PCI
> consistent area
> - they are not resized when the MTU changes
> - they are used
> - to hand-pad undersized packets. skb_pad anyone ?
> - to linearize fragmented skbs whose fragment count
> goes beyond the 7 fragments hardware limit in order
> to claim scatter-gather support
>
> Actually the SG code is commented out and I wonder if it
> could not be implemented (ab-)using the large send feature
> of the chipset since the latter should support some
> multi-descriptor packet transmitting.
>
> Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
> Fixed-by: Séguier Régis <rseguier@e-teleport.net>
> ---
> drivers/net/via-velocity.c | 72 +++++++++++---------------------------------
> drivers/net/via-velocity.h | 5 ---
> 2 files changed, 18 insertions(+), 59 deletions(-)
>
ACK patches 1-6
applied 1-4, patch #5 failed to apply
prev parent reply other threads:[~2008-07-11 5:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-10 22:03 [PATCH 1/6] via-velocity: remove the bounce buffers Francois Romieu
2008-07-11 5:14 ` Jeff Garzik [this message]
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