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From: Phil Sutter <phil@nwl.cc>
To: Steffen Klassert <steffen.klassert@secunet.com>
Cc: linux-crypto@vger.kernel.org, netfilter-devel@vger.kernel.org
Subject: XFRM interface and NF_INET_LOCAL_OUT hook
Date: Wed, 25 Nov 2020 12:23:42 +0100	[thread overview]
Message-ID: <20201125112342.GA11766@orbyte.nwl.cc> (raw)

Hi Steffen,

I am working on a ticket complaining about netfilter policy match
missing packets in OUTPUT chain if XFRM interface is being used.

I don't fully overlook the relevant code path, but it seems like
skb_dest(skb)->xfrm is not yet assigned when the skb is routed towards
XFRM interface and already cleared again (by xfrm_output_one?) before it
makes its way towards the real output interface. NF_INET_POST_ROUTING
hook works though.

Is this a bug or an expected quirk when using XFRM interface?

Cheers, Phil

             reply	other threads:[~2020-11-25 11:46 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-25 11:23 Phil Sutter [this message]
2020-11-26  9:40 ` XFRM interface and NF_INET_LOCAL_OUT hook Steffen Klassert
2020-11-26 13:12   ` Phil Sutter
2020-11-27  9:55     ` Steffen Klassert
2020-11-27 14:10       ` Phil Sutter
2020-12-02 13:18         ` Steffen Klassert
2020-12-07 12:35           ` Phil Sutter
2020-12-07 12:38           ` Nicolas Dichtel

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