virtchnl_queue_vector_maps
VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_queue_vector_maps);
((u16)(~0) - sizeof(struct virtchnl_queue_vector_maps)) /
valid_len = sizeof(struct virtchnl_queue_vector_maps);
struct virtchnl_queue_vector_maps *v_qp =
(struct virtchnl_queue_vector_maps *)msg;