[PATCH net v3 0/2] gre: fix lwtunnel support

[Jiri Benc <jbenc@redhat.com>]

This patchset fixes a few bugs in ipgre metadata mode implementation.

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.

v3: Back to v1 in order not to break existing users. Dropped patch 3, will
    be fixed in iproute2 instead.
v2: Rejecting invalid configuration, added patch 3, dropped patch for
    ETH_P_TEB (will target net-next).

Jiri Benc (2):
  gre: do not assign header_ops in collect metadata mode
  gre: build header correctly for collect metadata tunnels

 net/ipv4/ip_gre.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

-- 
1.8.3.1