openvswitch: Add support for 802.1ad

V20: Added attribute parsing of inner vlan to consolidated vlan parsing fn. Added vport vlan mtu size changes to vport from vport-netdev.c in V18. All changes are in Pacch 3 of the series. Patches 1 and 2 have already been acked to V18 submission.

V19: Rebased to latest net-next 4.3.0-rc6+
commit 6d08f617872cc048173d59f1ce4660b030bab5a6
plus a few reviewer's suggested changes.

Note: changes to netdev-vport.c are not included. dev_queue_xmit() is now called directly as the send vport ops function and length adjustments for vlans don't apply. I have concerns whether this is correct but haven't review all the vport code. Reviewer's comments are welcome.

V18: Patches 1 and 2 in this series have been acked from V17.

Patch 3 in the series includes some significant changes.
The patch includes fixes the decoding of the flow for the outer tpid. Also, netlink parsing code has been consolidated to generalize inner and outer vlans and non-mask and masked cases as much as possible.

V17,V16: Implement reviewer's comments.

V15: Implement reviewer comments.

V14: Add outer tpid to flow_key

V13: Fix incorrect encoding and decoding of netlink to/from key attributes.

V12: Fix some problems and issues pointed out by reviewers. When parsing netlink attributes Ether types other then 0x88a8 as outer tpid.

V11: Add inner tpid to flow key. Fix separate inner encap attribute when parsing netlink attributes. Merge 2 patches to consolidate qinq changes.

V10: Implement reviewer comments: Consolidate vlan parsing functions. Splits netlink parsing and flow conversion into a separate patch. Uses double encap attribute encapsulation for 802.1ad. Netlink attributes now look like this:

    eth_type(0x88a8),vlan(vid=100),encap(eth_type(0x8100), vlan(vid=200),
                                 encap(eth_type(0x0800), ...))

The double encap atributes in this version of the patch is incompatible with old versions of the user level 802.1ad patch. A new user level patch which is also being submitted simultaneously to openvswitch dev mailing list.

V9: Includes changes suggested by reviewers

V8: Includes changes suggested by reviewers

V7: Includes changes suggested by reviewers

V6: Rebased to net-next

V5: Use encapsulated attributes

For discussion, history and previous versions of the kernel module patch and the user code patch see the OVS dev mailing list, openvswitch.org/pipermail/dev/..

Thomas F Herbert (3):
openvswitch: 802.1ad uapi changes.
Check for vlan ethernet types for 8021.q or 802.1ad 802.1AD: Flow handling, actions, vlan parsing and netlink attributes

 include/linux/if_vlan.h          |  16 +++
 include/uapi/linux/openvswitch.h |  17 +--
 net/openvswitch/actions.c        |   6 +-
 net/openvswitch/flow.c           |  76 ++++++++++---
 net/openvswitch/flow.h           |   8 +-
 net/openvswitch/flow_netlink.c   | 233 +++++++++++++++++++++++++++++----------
 net/openvswitch/vport.c          |   4 +-
 7 files changed, 270 insertions(+), 90 deletions(-)

2.4.3