[dpdk-dev] [PATCH 04/11] ixgbe: add log messages when rx bulk mode is not usable

[David Marchand <david.marchand@6wind.com>]

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c |   29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index e2804bd..7d6c7ea 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -1969,15 +1969,34 @@ check_rx_burst_bulk_alloc_preconditions(__rte_unused struct igb_rx_queue *rxq)
 	 * outside of this function.
 	 */
 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
-	if (! (rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST))
+	if (! (rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST)) {
+		PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
+			     "rxq->rx_free_thresh=%d, "
+			     "RTE_PMD_IXGBE_RX_MAX_BURST=%d\n",
+			     rxq->rx_free_thresh, RTE_PMD_IXGBE_RX_MAX_BURST);
 		ret = -EINVAL;
-	else if (! (rxq->rx_free_thresh < rxq->nb_rx_desc))
+	} else if (! (rxq->rx_free_thresh < rxq->nb_rx_desc)) {
+		PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
+			     "rxq->rx_free_thresh=%d, "
+			     "rxq->nb_rx_desc=%d\n",
+			     rxq->rx_free_thresh, rxq->nb_rx_desc);
 		ret = -EINVAL;
-	else if (! ((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0))
+	} else if (! ((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0)) {
+		PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
+			     "rxq->nb_rx_desc=%d, "
+			     "rxq->rx_free_thresh=%d\n",
+			     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)))
+	} 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\n",
+			     rxq->nb_rx_desc, IXGBE_MAX_RING_DESC,
+			     RTE_PMD_IXGBE_RX_MAX_BURST);
 		ret = -EINVAL;
+	}
 #else
 	ret = -EINVAL;
 #endif
-- 
1.7.10.4