Building with the attached random configuration file,

drivers/net/ethernet/mellanox/mlx4/en_tx.c: In function ‘mlx4_en_process_tx_cq’:
drivers/net/ethernet/mellanox/mlx4/en_tx.c:395:27: error: ‘struct netdev_queue’
has no member named ‘dql’
  prefetchw(&ring->tx_queue->dql.limit);
                           ^
drivers/net/ethernet/mellanox/mlx4/en_tx.c: In function ‘mlx4_en_xmit’:
drivers/net/ethernet/mellanox/mlx4/en_tx.c:740:27: error: ‘struct netdev_queue’
has no member named ‘dql’
  prefetchw(&ring->tx_queue->dql);
                           ^
make[5]: *** [drivers/net/ethernet/mellanox/mlx4/en_tx.o] Error 1