dpif-netdev/mfex: Add AVX512 based optimized miniflow extract

This commit adds AVX512 implementations of miniflow extract.
By using the 64 bytes available in an AVX512 register, it is
possible to convert a packet to a miniflow data-structure in
a small quantity instructions.

The implementation here probes for Ether()/IP()/UDP() traffic,
and builds the appropriate miniflow data-structure for packets
that match the probe.

The implementation here is auto-validated by the miniflow
extract autovalidator, hence its correctness can be easily
tested and verified.

Note that this commit is designed to easily allow addition of new
traffic profiles in a scalable way, without code duplication for
each traffic profile.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>

lib/automake.mk

@@ -39,6 +39,7 @@ lib_libopenvswitchavx512_la_CFLAGS = \
 	$(AM_CFLAGS)
 lib_libopenvswitchavx512_la_SOURCES = \
 	lib/dpif-netdev-lookup-avx512-gather.c \
+	lib/dpif-netdev-extract-avx512.c \
 	lib/dpif-netdev-avx512.c
 lib_libopenvswitchavx512_la_LDFLAGS = \
 	-static