Merge branch 'vxlan-headers-and-tx-cleanups'

Jiri Benc says:

====================
vxlan: cleanup headers and tx path

This is first part of vxlan cleanup. It makes vxlan.h better organized and
removes code duplication in the tx path. There's no change in functionality.

This is in preparation for VXLAN-GPE support. Other sets will follow with
cleanup of rx path, modifications of vxlan interface setup and
cleanup/modification of fdb handling. The goal of these patchsets is to
consolidate VXLAN extension handling (right now it's scattered all around
the code) and allow vxlan to operate in L3 mode (i.e. without inner Ethernet
headers).

The full picture (all 30 patches) can be seen at:
https://github.com/jbenc/linux-vxlan/commits/master



Changelog:
v2: added patch 5/6, fixing the udp sum problem spotted by Paolo Abeni
====================

Signed-off-by: David S. Miller <davem@davemloft.net>