netdev - Re: LRO restructuring?

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Message-ID: <20090220003725.GA15980@gondor.apana.org.au>
Date:	Fri, 20 Feb 2009 08:37:25 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	James Huang <jamesclhuang@...il.com>
Cc:	Jan-Bernd Themann <themann@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>, netdev@...r.kernel.org
Subject: Re: LRO restructuring?

On Thu, Feb 19, 2009 at 02:17:11PM -0800, James Huang wrote:
> Hi all,
> 
>     One question about inet_lro.c (linux 2.6.28.6)
> In lro_proc_segment(), it does not check the number of available frags
> entries in lro_desc->parent against the number of new fragments to be added
> before calling lro_add_frags().  Is that a bug?  I see that
> lro_proc_segment() does some type of checking at the end, but could that be
> too late (i.e. overflow the frags[])??
> 
>     Also I think some obvious optimization in lro_get_desc() can be done by
> combining the two for loops into one.

That file is obsolete.  The GRO code that will replace it lives
in various places:

	net/core/dev.c
	net/core/skbuff.c
	net/ipv4/af_inet.c
	net/ipv6/af_inet6.c
	net/ipv4/tcp_ipv4.c
	net/ipv6/tcp_ipv6.c
	net/ipv4/tcp.c
	net/8021q/vlan_core.c

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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