net/bnxt: fix size of Tx ring in HW

During Tx ring allocation, the actual ring size configured in the HW
ends up being twice the number of txd parameter specified to the driver.
The power of 2 ring size wrongly adds a +1 while sending the ring
create command to the FW.

Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_txr.c b/drivers/net/bnxt/bnxt_txr.c
index ac77434..2f2c871 100644 (file)
--- a/drivers/net/bnxt/bnxt_txr.c
+++ b/drivers/net/bnxt/bnxt_txr.c
@@ -101,7 +101,7 @@ int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id)
        if (ring == NULL)
                return -ENOMEM;
        txr->tx_ring_struct = ring;
-       ring->ring_size = rte_align32pow2(txq->nb_tx_desc + 1);
+       ring->ring_size = rte_align32pow2(txq->nb_tx_desc);
        ring->ring_mask = ring->ring_size - 1;
        ring->bd = (void *)txr->tx_desc_ring;
        ring->bd_dma = txr->tx_desc_mapping;