gre: eliminate holes in ip_tunnel

The structure can be packed denser by doing minor rearrangement
of existing elements.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2016-04-13 17:02:21 -07:00 • committed by David S. Miller
commit f38ba953be