net/pfe: add device start/stop

[dpdk.git] / drivers / net / cxgbe / sge.c

diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c
index b3c4ec2..aba85a2 100644 (file)
--- a/drivers/net/cxgbe/sge.c
+++ b/drivers/net/cxgbe/sge.c
@@ -1004,12 +1004,6 @@ static inline int tx_do_packet_coalesce(struct sge_eth_txq *txq,
        struct cpl_tx_pkt_core *cpl;
        struct tx_sw_desc *sd;
        unsigned int idx = q->coalesce.idx, len = mbuf->pkt_len;
-       unsigned int max_coal_pkt_num = is_pf4(adap) ? ETH_COALESCE_PKT_NUM :
-                                                      ETH_COALESCE_VF_PKT_NUM;
-
-#ifdef RTE_LIBRTE_CXGBE_TPUT
-       RTE_SET_USED(nb_pkts);
-#endif
 
        if (q->coalesce.type == 0) {
                mc = (struct ulp_txpkt *)q->coalesce.ptr;
@@ -1082,13 +1076,15 @@ static inline int tx_do_packet_coalesce(struct sge_eth_txq *txq,
        sd->coalesce.sgl[idx & 1] = (struct ulptx_sgl *)(cpl + 1);
        sd->coalesce.idx = (idx & 1) + 1;
 
-       /* send the coaelsced work request if max reached */
-       if (++q->coalesce.idx == max_coal_pkt_num
-#ifndef RTE_LIBRTE_CXGBE_TPUT
-           || q->coalesce.idx >= nb_pkts
-#endif
-           )
+       /* Send the coalesced work request, only if max reached. However,
+        * if lower latency is preferred over throughput, then don't wait
+        * for coalescing the next Tx burst and send the packets now.
+        */
+       q->coalesce.idx++;
+       if (q->coalesce.idx == adap->params.max_tx_coalesce_num ||
+           (adap->devargs.tx_mode_latency && q->coalesce.idx >= nb_pkts))
                ship_tx_pkt_coalesce_wr(adap, txq);
+
        return 0;
 }
 
@@ -1138,7 +1134,7 @@ out_free:
            (unlikely(m->pkt_len > max_pkt_len)))
                goto out_free;
 
-       pi = (struct port_info *)txq->data->dev_private;
+       pi = txq->data->dev_private;
        adap = pi->adapter;
 
        cntrl = F_TXPKT_L4CSUM_DIS | F_TXPKT_IPCSUM_DIS;
@@ -1154,7 +1150,6 @@ out_free:
                                txq->stats.mapping_err++;
                                goto out_free;
                        }
-                       rte_prefetch0((volatile void *)addr);
                        return tx_do_packet_coalesce(txq, mbuf, cflits, adap,
                                                     pi, addr, nb_pkts);
                } else {
@@ -1792,7 +1787,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
        int ret, flsz = 0;
        struct fw_iq_cmd c;
        struct sge *s = &adap->sge;
-       struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+       struct port_info *pi = eth_dev->data->dev_private;
        char z_name[RTE_MEMZONE_NAMESIZE];
        char z_name_sw[RTE_MEMZONE_NAMESIZE];
        unsigned int nb_refill;
@@ -2062,7 +2057,7 @@ int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq,
        int ret, nentries;
        struct fw_eq_eth_cmd c;
        struct sge *s = &adap->sge;
-       struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+       struct port_info *pi = eth_dev->data->dev_private;
        char z_name[RTE_MEMZONE_NAMESIZE];
        char z_name_sw[RTE_MEMZONE_NAMESIZE];
        u8 pciechan;
@@ -2141,7 +2136,7 @@ int t4_sge_alloc_ctrl_txq(struct adapter *adap, struct sge_ctrl_txq *txq,
        int ret, nentries;
        struct fw_eq_ctrl_cmd c;
        struct sge *s = &adap->sge;
-       struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+       struct port_info *pi = eth_dev->data->dev_private;
        char z_name[RTE_MEMZONE_NAMESIZE];
        char z_name_sw[RTE_MEMZONE_NAMESIZE];