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

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Date:	Mon, 16 Mar 2015 08:28:42 +0000
From:	Thomas Graf <tgraf@...g.ch>
To:	Herbert Xu <herbert@...dor.apana.org.au>
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 03/15/15 at 09:44pm, Herbert Xu wrote:
> The use of rhashtable_lookup_compare in nft_hash is gratuitous
> since the comparison function is just doing memcmp.  Furthermore,
> there is cruft embedded in the comparson function that should
> instead be moved into the caller of the lookup.
> 
> This patch moves that cruft over and replacces the call to
> rhashtable_lookup_compare with rhashtable_lookup.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

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.

Copying Patrick as well.
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