netdev - Re: [v1 PATCH 7/14] netfilter: Use rhashtable_lookup instead of lookup

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Date:	Fri, 20 Mar 2015 20:36:34 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>, kaber@...sh.net
Subject: Re: [v1 PATCH 7/14] netfilter: Use rhashtable_lookup instead of
 lookup_compare

On Mon, Mar 16, 2015 at 08:14:15PM +1100, Herbert Xu wrote:
> On Mon, Mar 16, 2015 at 08:28:42AM +0000, Thomas Graf wrote:
>
> > The reason for the indirection was to not bypass the abstraction
> > nft_data_cmp() provides.
> > 
> > No objection to the change but maybe leave a comment in
> > nft_data_cmp() that if one changes nft_data_cmp() one needs to
> > look at nft_hash and see if the direct use of rhashtable_lookup()
> > is still valid.
> 
> Well we could preserve nft_data_cmp if necessary.  It'll just
> mean an extra indirect call to do the compare when needed.

FWIW I've decided to ditch nft_data_cmp unless someone can show
me that it's really necessary.  The reason is that nft_hash_lookup
already uses memcmp instead of nft_data_cmp.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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