[dpdk-stable] patch 'net/i40e: fix mbuf alloc failed counter' has been queued to LTS release 16.11.2

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to LTS release 16.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable
yet. It will be pushed if I get no objections before 05/07/17.
So please shout if anyone has objections.

Thanks.

	--yliu

---
>From 326c17459bcd3dfa1c5bf224908ed4488376caab Mon Sep 17 00:00:00 2001
From: Matt Peters <matt.peters at windriver.com>
Date: Tue, 25 Apr 2017 08:28:45 -0400
Subject: [PATCH] net/i40e: fix mbuf alloc failed counter

[ upstream commit 09c04fbc8d1580b49095f6113ff3b140d699278e ]

When an mbuf alloc fails during the mempool get operation for the
i40e bulk alloc receive function, the rx_mbuf_alloc_failed counter
is not incremented to record the error.

This fix ensures consistency with the other i40e receive procedures and
other net drivers.

Signed-off-by: Matt Peters <matt.peters at windriver.com>
Signed-off-by: Allain Legacy <allain.legacy at windriver.com>
Acked-by: Helin Zhang <helin.zhang at intel.com>
---
 drivers/net/i40e/i40e_rxtx.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 9cc9808..1a007d6 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -598,6 +598,7 @@ static inline uint16_t
 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 {
 	struct i40e_rx_queue *rxq = (struct i40e_rx_queue *)rx_queue;
+	struct rte_eth_dev *dev;
 	uint16_t nb_rx = 0;
 
 	if (!nb_pkts)
@@ -615,9 +616,10 @@ rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 		if (i40e_rx_alloc_bufs(rxq) != 0) {
 			uint16_t i, j;
 
-			PMD_RX_LOG(DEBUG, "Rx mbuf alloc failed for "
-				   "port_id=%u, queue_id=%u",
-				   rxq->port_id, rxq->queue_id);
+			dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
+			dev->data->rx_mbuf_alloc_failed +=
+				rxq->rx_free_thresh;
+
 			rxq->rx_nb_avail = 0;
 			rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
 			for (i = 0, j = rxq->rx_tail; i < nb_rx; i++, j++)
@@ -679,6 +681,7 @@ i40e_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 	union i40e_rx_desc rxd;
 	struct i40e_rx_entry *sw_ring;
 	struct i40e_rx_entry *rxe;
+	struct rte_eth_dev *dev;
 	struct rte_mbuf *rxm;
 	struct rte_mbuf *nmb;
 	uint16_t nb_rx;
@@ -707,10 +710,13 @@ i40e_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 			break;
 
 		nmb = rte_mbuf_raw_alloc(rxq->mp);
-		if (unlikely(!nmb))
+		if (unlikely(!nmb)) {
+			dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
+			dev->data->rx_mbuf_alloc_failed++;
 			break;
-		rxd = *rxdp;
+		}
 
+		rxd = *rxdp;
 		nb_hold++;
 		rxe = &sw_ring[rx_id];
 		rx_id++;
@@ -802,6 +808,7 @@ i40e_recv_scattered_pkts(void *rx_queue,
 	struct rte_mbuf *nmb, *rxm;
 	uint16_t rx_id = rxq->rx_tail;
 	uint16_t nb_rx = 0, nb_hold = 0, rx_packet_len;
+	struct rte_eth_dev *dev;
 	uint32_t rx_status;
 	uint64_t qword1;
 	uint64_t dma_addr;
@@ -818,8 +825,12 @@ i40e_recv_scattered_pkts(void *rx_queue,
 			break;
 
 		nmb = rte_mbuf_raw_alloc(rxq->mp);
-		if (unlikely(!nmb))
+		if (unlikely(!nmb)) {
+			dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
+			dev->data->rx_mbuf_alloc_failed++;
 			break;
+		}
+
 		rxd = *rxdp;
 		nb_hold++;
 		rxe = &sw_ring[rx_id];
-- 
1.9.0