linux-kernel - Re: [PATCH v6] netfilter: save the hash of the tuple in the original direction for latter use

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Date:	Tue, 21 Sep 2010 17:50:40 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Changli Gao <xiaosuo@...il.com>
CC:	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, netfilter-devel@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6] netfilter: save the hash of the tuple in the original
 direction for latter use

Am 20.09.2010 17:06, schrieb Changli Gao:
> Since we don't change the tuple in the original direction, we can save it
> in ct->tuplehash[IP_CT_DIR_REPLY].hnode.pprev for __nf_conntrack_confirm()
> use.
> 
> __hash_conntrack() is split into two steps: hash_conntrack_raw() is used
> to get the raw hash, and __hash_bucket() is used to get the bucket id.
> 
> In SYN-flood case, early_drop() doesn't need to recompute the hash again.

Applied, thanks Changli.
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