bnx2x: skip Rx producer refresh when no packet

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>

diff --git a/drivers/net/bnx2x/bnx2x_rxtx.c b/drivers/net/bnx2x/bnx2x_rxtx.c
index 09e3ebf..e8998c0 100644 (file)
--- a/drivers/net/bnx2x/bnx2x_rxtx.c
+++ b/drivers/net/bnx2x/bnx2x_rxtx.c
@@ -374,6 +374,9 @@ bnx2x_recv_pkts(void *p_rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
        sw_cq_cons = rxq->rx_cq_head;
        sw_cq_prod = rxq->rx_cq_tail;
 
+       if (sw_cq_cons == hw_cq_cons)
+               return 0;
+
        while (nb_rx < nb_pkts && sw_cq_cons != hw_cq_cons) {
 
                bd_prod &= MAX_RX_BD(rxq);