classify: preformance improvements in classifiers
classify: preformance improvements in classifiers

Reworked the code to reduce line fill buffer pressure. Improved compiler loop
unrolling, over the existing complex hand-unrolling. Updated the code to use
vlib_get_buffers & vlib_buffer_enqueue_to_next.

Type: improvement

Signed-off-by: Ray Kinsella <64a50932049ddff830412e0fd9edb30198bf17f3@ashroe.eu>
Change-Id: I7dca7515ba91672eaf50a6eecd13811210cf0006

FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp