[PATCH v4 ipsec-next 0/3] xfrm: Support GRO decapsulation for ESP in UDP encapsulation

[Antony Antony <antony.antony@secunet.com>]

Hello,
Here I re-worked this patch set and here is v4.

v1->v2 fixed error path added skb_push
        use is_fou instead of holding sk in skb.
        user configurable option to enable GRO; using UDP_GRO

v2->v3 only support GRO for UDP_ENCAP_ESPINUDP and not
        UDP_ENCAP_ESPINUDP_NON_IKE. The _NON_IKE is an IETF early draft
        version and not widly used.

v3->v4 removed refactoring since refactored function is only used once
        removed refcount on sk, sk is not used any more.
        fixed encap_type as Eyal recommended.
        removed un-necessary else since there is a goto before that.

We are not merging v4 and v6 functions at this moment. As it would
need more work to do it cleanly.


Steffen Klassert (3):
  xfrm: Use the XFRM_GRO to indicate a GRO call on input.
  xfrm: Support GRO for IPv4 ESP in UDP encapsulation.
  xfrm: Support GRO for IPv6 ESP in UDP encapsulation.

 include/net/gro.h        |  2 +-
 include/net/ipv6_stubs.h |  3 ++
 include/net/xfrm.h       |  4 ++
 net/ipv4/esp4_offload.c  |  6 ++-
 net/ipv4/udp.c           | 18 +++++++-
 net/ipv4/xfrm4_input.c   | 98 ++++++++++++++++++++++++++++++++--------
 net/ipv6/af_inet6.c      |  1 +
 net/ipv6/esp6_offload.c  | 10 +++-
 net/ipv6/xfrm6_input.c   | 98 ++++++++++++++++++++++++++++++++--------
 net/xfrm/xfrm_input.c    |  6 +--
 10 files changed, 197 insertions(+), 49 deletions(-)

--
2.30.2

-antony