Date: Tue, 20 Jan 2009 08:24:43 +1100
From: Herbert Xu <herbert@gondor.apana.org.au>
To: David Miller <davem@davemloft.net>
Cc: w@1wt.eu, jarkao2@gmail.com, zbr@ioremap.net, dada1@cosmosbay.com,
       ben@zeus.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
       netdev@vger.kernel.org, jens.axboe@oracle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once
Message-ID: <20090119212443.GC6609@gondor.apana.org.au>
References: <20090119061420.GB12946@1wt.eu> <20090118.221908.47032075.davem@davemloft.net> <20090119101924.GA1881@gondor.apana.org.au> <20090119.125941.240930524.davem@davemloft.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20090119.125941.240930524.davem@davemloft.net>
User-Agent: Mutt/1.5.18 (2008-05-17)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 917
Lines: 23

On Mon, Jan 19, 2009 at 12:59:41PM -0800, David Miller wrote:
.
> And the difference between 64 and IPV4+TCP header len becomes the
> payload, don't you see? :-)
> 
> myri10ge just pulls min(64, skb->len) bytes from the SKB frags into
> the linear area, unconditionally.  So a small number of payload bytes
> can in fact end up there.

Ah, I thought they were doing a precise division.  Yes pulling
a constant length will trigger it if it's big enough.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/