> On Aug 18, 2015, at 6:54 PM, David Ahern <d...@cumulusnetworks.com> wrote:
> 
> Directs route lookups to VRF table. Compiles out if NET_VRF is not
> enabled. With this patch able to successfully bring up ipsec tunnels
> in VRFs, even with duplicate network configuration (IPv4 tested).
> 
> Signed-off-by: David Ahern <d...@cumulusnetworks.com>
> ---
> net/ipv4/xfrm4_policy.c | 7 +++++--
> net/ipv6/xfrm6_policy.c | 7 +++++--
> 2 files changed, 10 insertions(+), 4 deletions(-)

I think you should use the new vrf_master_index() helper that acquires rcu 
because
it looks possible to call ->decode_session() without rcu read lock, e.g. in the 
hold_timer
function xfrm_policy_queue_process(), though I haven’t tested it and might be 
missing
something. :-)

Cheers,
 Nik--
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