[Bridge] [PATCH] bridge: make it possible for packets to traverse the bridge withour hitting netfilter

David Miller davem at davemloft.net
Wed Feb 11 22:29:36 UTC 2015

From: Imre Palik <imrep.amz at gmail.com>
Date: Tue, 10 Feb 2015 10:32:24 +0100

> From: "Palik, Imre" <imrep at amazon.de>
> The netfilter code is made with flexibility instead of performance in mind.
> So when all we want is to pass packets between different interfaces, the
> performance penalty of hitting netfilter code can be considerable, even when
> all the firewalling is disabled for the bridge.
> This change makes it possible to disable netfilter both on a per bridge basis,
> or for the whole bridging subsystem.  In the case interesting to us, this can
> lead to more than 10% speedup compared to the case when only bridge-iptables
> are disabled.
> Cc: Anthony Liguori <aliguori at amazon.com>
> Signed-off-by: Imre Palik <imrep at amazon.de>

Sorry, no.

If I apply this, someone is going to try to submit a patch for every
damn protocol layer to add a stupid hack like this.

Makw NF_HOOK() faster instead.

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