tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
        mac_iocb_ptr = tx_ring_desc->queue_entry;
        memset((void *)mac_iocb_ptr, 0, sizeof(mac_iocb_ptr));
-       if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) != NETDEV_TX_OK) {
-               QPRINTK(qdev, TX_QUEUED, ERR, "Could not map the segments.\n");
-               return NETDEV_TX_BUSY;
-       }
 
        mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
        mac_iocb_ptr->tid = tx_ring_desc->index;
                ql_hw_csum_setup(skb,
                                 (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
        }
+       if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) !=
+                       NETDEV_TX_OK) {
+               QPRINTK(qdev, TX_QUEUED, ERR,
+                               "Could not map the segments.\n");
+               return NETDEV_TX_BUSY;
+       }
        QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
        tx_ring->prod_idx++;
        if (tx_ring->prod_idx == tx_ring->wq_len)