netdev - Re: csum offload and af

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Message-ID: <20080813012129.GA29996@gondor.apana.org.au>
Date:	Wed, 13 Aug 2008 11:21:29 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...eo.de, rusty@...tcorp.com.au, anthony@...emonkey.ws,
	netdev@...r.kernel.org
Subject: Re: csum offload and af_packet

On Tue, Aug 12, 2008 at 06:17:31PM -0700, David Miller wrote:
>
> It seems pointless for us to add features like mmap() support and
> auxdata if the most important client library and tool users of these
> features never take it up.

Well auxdata at least is used by dhcp-common and therefore dhcp-client
and dhcp-server.

> libpcap and tcpdump have been notoriously difficult in this area.

Yes the disconnect between the kernel community and the rest is
large.  The only successful examples seems to be where the user-
space code is maintained by a kernel developer, e.g., iproute.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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