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From: Steffen Klassert <steffen.klassert@secunet.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David Miller <davem@davemloft.net>, <alexander.duyck@gmail.com>,
	<alexander.h.duyck@redhat.com>, <netdev@vger.kernel.org>,
	<tgraf@suug.ch>
Subject: Re: [net PATCH] ip_vti/ip6_vti: Clear skb->mark when resetting skb->dev in receive path
Date: Mon, 18 May 2015 12:30:47 +0200	[thread overview]
Message-ID: <20150518103045.GG8928@secunet.com> (raw)
In-Reply-To: <20150518085908.GA18381@gondor.apana.org.au>

On Mon, May 18, 2015 at 04:59:08PM +0800, Herbert Xu wrote:
> On Mon, May 18, 2015 at 10:38:44AM +0200, Steffen Klassert wrote:
> > 
> > Yes, that's possible. We just did not restore it because it 
> > was cleared with skb_scrub_packet() right after the lookup.
> 
> OK I think we can still salvage this if we do the following:
> 
> 1) Restore the mark after the lookup so the effect is minimised.

Yes, we need this to fix it for now.

> 2) Create new flow lookup field for this.
> 3) Create tunnel flag that indicates new field should be used.

Or, maybe we can create new vti tunnel keys and some key
field in the xfrm_policy and xfrm_state. If the vti keys
are present at the tunnel, use the new flow lookup field
and match with the key field of the policy and state.
Otherwise, fallback to use gre keys and mark.

  reply	other threads:[~2015-05-18 10:30 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-14  2:04 [net PATCH] ip_vti/ip6_vti: Clear skb->mark when resetting skb->dev in receive path Alexander Duyck
2015-05-14  3:28 ` Herbert Xu
2015-05-14  6:14   ` Alexander Duyck
2015-05-14  6:26     ` Herbert Xu
2015-05-15 16:37       ` David Miller
2015-05-15 19:14         ` Alexander Duyck
2015-05-16 12:34           ` Herbert Xu
2015-05-16 21:13             ` David Miller
2015-05-18  7:04               ` Steffen Klassert
2015-05-18  8:31                 ` Herbert Xu
2015-05-18  8:38                   ` Steffen Klassert
2015-05-18  8:59                     ` Herbert Xu
2015-05-18 10:30                       ` Steffen Klassert [this message]
2015-05-18 10:33                         ` Herbert Xu

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