netdev - [PATCH next-next 0/7] net: Cleanup IPv6 ip tunnels

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Date:	Fri, 29 Apr 2016 17:12:14 -0700
From:	Tom Herbert <tom@...bertland.com>
To:	<davem@...emloft.net>, <netdev@...r.kernel.org>
CC:	<kernel-team@...com>
Subject: [PATCH next-next 0/7]  net: Cleanup IPv6 ip tunnels

The IPv6 tunnel code is very different from IPv4 code. There is a lot
of redundancy with the IPv4 code, particularly in the GRE tunneling.

This patch set cleans up the tunnel code to make the IPv6 code look
more like the IPv4 code and use common functions between the two
stacks where possible.

This work should make it easier to maintain and extend the IPv6 ip
tunnels.

Items in this patch set:
  - Cleanup IPv6 tunnel receive path (ip6_tnl_rcv). Includes using
    gro_cells and exporting ip6_tnl_rcv so the ip6_gre can call it
  - Move GRE functions to common header file (tx functions) or
    gre_demux.c (rx functions like gre_parse_header)
  - Call common GRE functions from IPv6 GRE
  - Create ip6_tnl_xmit (to be like ip_tunnel_xmit)

Tested:
  Ran super_netperf tests for TCP_RR and TCP_STREAM for:
    - IPv4 over gre, gretap, gre6, gre6tap
    - IPv6 over gre, gretap, gre6, gre6tap
    - ipip
    - ip6ip6
    - ipip/gue
    - IPv6 over gre/gue
    - IPv4 over gre/gue

Tom Herbert (7):
  ipv6: Cleanup IPv6 tunnel receive path
  gre: Move utility functions to common headers
  gre6: Cleanup GREv6 receive path, call common GRE functions
  ipv6: Create ip6_tnl_xmit
  gre: Create common functions for transmit
  ipv6: Generic tunnel cleanup
  gre6: Cleanup GREv6 transmit path, call common GRE functions

 include/net/gre.h        | 104 +++++++++++++
 include/net/ip6_tunnel.h |  11 +-
 net/ipv4/gre_demux.c     |  64 ++++++++
 net/ipv4/ip_gre.c        | 199 +++---------------------
 net/ipv6/ip6_gre.c       | 392 +++++++++--------------------------------------
 net/ipv6/ip6_tunnel.c    | 266 +++++++++++++++++++++-----------
 6 files changed, 452 insertions(+), 584 deletions(-)

-- 
2.8.0.rc2