Subject: [PATCH net v2 0/3] gre: fix lwtunnel support

From: Jiri Benc <[email-masked]>
Date: Sun, 24 Apr 2016 13:00:19 +0200

This patchset fixes a few bugs in gre metadata mode implementation, mainly
with ipgre.

As an example, in this setup:

ip a a 192.168.1.1/24 dev eth0
ip l a gre1 type gre external
ip l s gre1 up
ip a a 192.168.99.1/24 dev gre1
ip r a 192.168.99.2/32 encap ip dst 192.168.1.2 ttl 10 dev gre1
ping 192.168.99.2

the traffic does not go through before this patchset and does as expected
with it applied.

v2: Rejecting invalid configuration, added patch 3, dropped patch for
    ETH_P_TEB (will target net-next).

Jiri Benc (3):
  gre: do not assign header_ops in collect metadata mode
  gre: build header correctly for collect metadata tunnels
  gre: allow creation of gretap interfaces in metadata mode

 net/ipv4/ip_gre.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

-- 
1.8.3.1