This patch adds to MLX5 PMD support of matching on GTP item, fields msg_type and teid, according to RFC [1]. GTP item validation and translation functions are added and called. GTP tunnel type is added to supported tunnels. [1] http://mails.dpdk.org/archives/dev/2019-December/152799.html Signed-off-by: Dekel Peled <dekelp@mellanox.com> Acked-by: Ori Kam <orika@mellanox.com>