netdev - Re: [PATCH net-next v2] bpf: pass sk to helper functions

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Message-Id: <20170411.145446.1300958521081310466.davem@davemloft.net>
Date:   Tue, 11 Apr 2017 14:54:46 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     willemdebruijn.kernel@...il.com
Cc:     netdev@...r.kernel.org, ast@...com, daniel@...earbox.net,
        fengc@...gle.com, lorenzo@...gle.com, willemb@...gle.com
Subject: Re: [PATCH net-next v2] bpf: pass sk to helper functions

From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
Date: Tue, 11 Apr 2017 14:08:08 -0400

> From: Willem de Bruijn <willemb@...gle.com>
> 
> BPF helper functions access socket fields through skb->sk. This is not
> set in ingress cgroup and socket filters. The association is only made
> in skb_set_owner_r once the filter has accepted the packet. Sk is
> available as socket lookup has taken place.
> 
> Temporarily set skb->sk to sk in these cases.
> 
> Signed-off-by: Willem de Bruijn <willemb@...gle.com>

Applied, thank you.