mlx5e_get_full_header_size
int mlx5e_get_full_header_size(const struct mbuf *, const struct tcphdr **);
header_size = mlx5e_get_full_header_size(mb, &th);
args.ihs = mlx5e_get_full_header_size(mb, NULL);
args.ihs = mlx5e_get_full_header_size(mb, NULL);