i40e: Initial support to add hw hints for xdp

- Parse the completed rx descriptors and various headers to populate
the meta data required by XDP programs

- The value of keeping the IP addresses and ports are questionable.
If needed, they can be enabled through a conditional compilation

- The amount of cycles consumed for processing packet headers
is dumped to printk log buffer

- A module parameter has been introduced to populate the hw hints

Change-Id: Ifa0920ed24c458fb6022201e1a9dae21071b7133
Signed-off-by: Jayaprakash Shanmugam <jayaprakash.shanmugam@intel.com>
Acked-by: PJ Waskiewicz <peter.waskiewicz.jr@intel.com>
3 files changed