net/ixgbe: allow bulk alloc for the max size desc ring

[dpdk.git] / drivers / net / ixgbe / ixgbe_rxtx.c

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 00013c6..5c11982 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -2645,7 +2645,6 @@ check_rx_burst_bulk_alloc_preconditions(struct ixgbe_rx_queue *rxq)
         *   rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST
         *   rxq->rx_free_thresh < rxq->nb_rx_desc
         *   (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
-        *   rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST)
         * Scattered packets are not supported.  This should be checked
         * outside of this function.
         */
@@ -2667,15 +2666,6 @@ check_rx_burst_bulk_alloc_preconditions(struct ixgbe_rx_queue *rxq)
                             "rxq->rx_free_thresh=%d",
                             rxq->nb_rx_desc, rxq->rx_free_thresh);
                ret = -EINVAL;
-       } else if (!(rxq->nb_rx_desc <
-              (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST))) {
-               PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
-                            "rxq->nb_rx_desc=%d, "
-                            "IXGBE_MAX_RING_DESC=%d, "
-                            "RTE_PMD_IXGBE_RX_MAX_BURST=%d",
-                            rxq->nb_rx_desc, IXGBE_MAX_RING_DESC,
-                            RTE_PMD_IXGBE_RX_MAX_BURST);
-               ret = -EINVAL;
        }
 
        return ret;
@@ -2692,12 +2682,7 @@ ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)
        /*
         * By default, the Rx queue setup function allocates enough memory for
         * IXGBE_MAX_RING_DESC.  The Rx Burst bulk allocation function requires
-        * extra memory at the end of the descriptor ring to be zero'd out. A
-        * pre-condition for using the Rx burst bulk alloc function is that the
-        * number of descriptors is less than or equal to
-        * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the
-        * constraints here to see if we need to zero out memory after the end
-        * of the H/W descriptor ring.
+        * extra memory at the end of the descriptor ring to be zero'd out.
         */
        if (adapter->rx_bulk_alloc_allowed)
                /* zero out extra memory */