netdev - Re: [net] vxlan: fix vxlan6_get_route() adding a call to xfrm_lookup

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Message-ID: <20200115211621.GA573446@bistromath.localdomain>
Date:   Wed, 15 Jan 2020 22:16:21 +0100
From:   Sabrina Dubroca <sd@...asysnail.net>
To:     Andrea Mayer <andrea.mayer@...roma2.it>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Petr Machata <petrm@...lanox.com>,
        Stefano Brivio <sbrivio@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Taehee Yoo <ap420073@...il.com>,
        Litao jiao <jiaolitao@...secom.com>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paolo Lungaroni <paolo.lungaroni@...t.it>
Subject: Re: [net] vxlan: fix vxlan6_get_route() adding a call to
 xfrm_lookup_route()

2020-01-15, 20:22:31 +0100, Andrea Mayer wrote:
> currently IPSEC cannot be used to encrypt/decrypt IPv6 vxlan traffic.
> The problem is that the vxlan module uses the vxlan6_get_route()
> function to find out the route for transmitting an IPv6 packet, which in
> turn uses ip6_dst_lookup() available in ip6_output.c.
> Unfortunately ip6_dst_lookup() does not perform any xfrm route lookup,
> so the xfrm framework cannot be used with vxlan6.

That's not the case anymore, since commit 6c8991f41546 ("net:
ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup").

Can you retest on the latest net tree?

Thanks.

-- 
Sabrina