net/bnxt: disable end of packet padding for Rx

Testing has shown that the packet forwarding rate for packet sizes
that are not a multiple of the cache line size is reduced when the
DMA size is padded to a multiple of the cache line size. Improve
performance for these packet sizes by disabling EOP padding.

Fixes: f4253e97e7b0 ("net/bnxt: set padding flags in Rx descriptor")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index fdbe6f7..af17748 100644 (file)
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -1113,7 +1113,7 @@ int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
        size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
        size = RTE_MIN(BNXT_MAX_PKT_LEN, size);
 
-       type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT | RX_PROD_PKT_BD_FLAGS_EOP_PAD;
+       type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT;
 
        rxr = rxq->rx_ring;
        ring = rxr->rx_ring_struct;