net/bnxt: optimize Rx processing

[dpdk.git] / drivers / net / bnxt / bnxt_rxr.c

diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index 9d88429..b6b72c5 100644 (file)
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -540,8 +540,8 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
        int rc = 0;
        bool evt = false;
 
-       /* If Rx Q was stopped return */
-       if (rxq->rx_deferred_start)
+       /* If Rx Q was stopped return. RxQ0 cannot be stopped. */
+       if (rxq->rx_deferred_start && rxq->queue_id)
                return 0;
 
        /* Handle RX burst request */
@@ -572,10 +572,13 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
                raw_cons = NEXT_RAW_CMP(raw_cons);
                if (nb_rx_pkts == nb_pkts || evt)
                        break;
+               /* Post some Rx buf early in case of larger burst processing */
+               if (nb_rx_pkts == BNXT_RX_POST_THRESH)
+                       B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
        }
 
        cpr->cp_raw_cons = raw_cons;
-       if ((prod == rxr->rx_prod && ag_prod == rxr->ag_prod) && !evt) {
+       if (!nb_rx_pkts && !evt) {
                /*
                 * For PMD, there is no need to keep on pushing to REARM
                 * the doorbell if there are no new completions
@@ -583,7 +586,6 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
                return nb_rx_pkts;
        }
 
-       B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
        if (prod != rxr->rx_prod)
                B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 
@@ -591,6 +593,8 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
        if (ag_prod != rxr->ag_prod)
                B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 
+       B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
+
        /* Attempt to alloc Rx buf in case of a previous allocation failure. */
        if (rc == -ENOMEM) {
                int i;