[dpdk-dev] [PATCH] ixgbe: Add missing rx_mbuf_alloc_failed statistics for vector PMD

[Balazs Nemeth]

The statistics that is reported through the rx_nombuf fields in struct
rte_eth_stats was not set when the vector PMD was used. The statistics
should report the number of mbufs that could _not_ be allocated during
rearm of the RX queue. The non-vector PMD reports it correctly. The
use of either vector PMD or non-vector PMD depends on runtime
configuration. Hence it is possible that a change in configuration
would disable this statistics. To prevent this from happening, the
statistics should be reported by both implementations.

Signed-off-by: Balazs Nemeth <balazs.nemeth at intel.com>
---
 lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
index 42c0f60..579bc46 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
@@ -71,6 +71,8 @@ ixgbe_rxq_rearm(struct igb_rx_queue *rxq)
 						dma_addr0);
 			}
 		}
+		rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
+			RTE_IXGBE_RXQ_REARM_THRESH;
 		return;
 	}
 
-- 
2.1.2