Do the VF message basic validation such as OPCODE message length check,
some special OPCODE message format check, to protect the i40e PMD from
malicious VF message attack.
Fixes: 4861cde46116 ("i40e: new poll mode driver")
Cc: stable@dpdk.org
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
cc0ed2f849