MTHCA_DB_TYPE_SRQ
case MTHCA_DB_TYPE_SRQ:
srq->db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_SRQ,
mthca_free_db(dev, MTHCA_DB_TYPE_SRQ, srq->db_index);
mthca_free_db(dev, MTHCA_DB_TYPE_SRQ, srq->db_index);