netdev - Re: [PATCH 1/2 v2 net-next] netfilter: xt_bpf: add mising opaque struct sk

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Message-Id: <20140730.195704.1972856285516371876.davem@davemloft.net>
Date:	Wed, 30 Jul 2014 19:57:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	pablo@...filter.org
Cc:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	ast@...mgrid.com, keescook@...omium.org, willemb@...gle.com,
	dborkman@...hat.com
Subject: Re: [PATCH 1/2 v2 net-next] netfilter: xt_bpf: add mising opaque
 struct sk_filter definition

From: Pablo Neira Ayuso <pablo@...filter.org>
Date: Tue, 29 Jul 2014 18:12:15 +0200

> This structure is not exposed to userspace, so fix this by defining
> struct sk_filter; so we skip the casting in kernelspace. This is safe
> since userspace has no way to lurk with that internal pointer.
> 
> Fixes: e6f30c7 ("netfilter: x_tables: add xt_bpf match")
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
> ---
> v2: address Willem's feedback, we still need uapi/linux/filter.h for
>     userspace iptables builds.

Applied.
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