SBP2_ALLOC_CMD
if ((ret = SBP2_ALLOC_CMD(tp, &cmd, 0)) != SBP2_SUCCESS) {
if ((ret = SBP2_ALLOC_CMD(tp, &ap->a_cmd, 0)) != SBP2_SUCCESS) {
if ((ret = SBP2_ALLOC_CMD(tp, &tp->t_mgt_cmd, 0)) != SBP2_SUCCESS) {