[PATCH v2] net/bnxt: fix the stat collection

[Kishore Padmanabha]

Stats collection was not aggregating stats for rings greater than
RTE_ETHDEV_QUEUE_STAT_CNTRS  when the application did not increase
the stats counters but supports more queues than the limit. Add
checks to increment aggregated stats from queues greater than
the limit. The fill functions already handle NULL qstats for
aggregate-only collection.

Bugzilla ID: 1836
Fixes: 57d5e5bc86e4 ("net/bnxt: add statistics")
Cc: stable at dpdk.org

Signed-off-by: Kishore Padmanabha <kishore.padmanabha at broadcom.com>

v2:
* udpate the git commit message
---
 drivers/net/bnxt/bnxt_stats.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_stats.c b/drivers/net/bnxt/bnxt_stats.c
index 3ed1dc8101db..88cfbaf9ff4b 100644
--- a/drivers/net/bnxt/bnxt_stats.c
+++ b/drivers/net/bnxt/bnxt_stats.c
@@ -659,7 +659,7 @@ static int bnxt_stats_get_ext(struct rte_eth_dev *eth_dev,
 	num_q_stats = RTE_MIN(bp->rx_cp_nr_rings,
 			      (unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS);
 
-	for (i = 0; i < num_q_stats; i++) {
+	for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 		struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 		struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 		struct bnxt_ring_stats_ext ring_stats = {0};
@@ -675,7 +675,8 @@ static int bnxt_stats_get_ext(struct rte_eth_dev *eth_dev,
 		if (unlikely(rc))
 			return rc;
 
-		bnxt_fill_rte_eth_stats_ext(bnxt_stats, &ring_stats, qstats, i, true);
+		bnxt_fill_rte_eth_stats_ext(bnxt_stats, &ring_stats,
+					    i < num_q_stats ? qstats : NULL, i, true);
 		bnxt_stats->rx_nombuf +=
 				rte_atomic_load_explicit(&rxq->rx_mbuf_alloc_fail,
 							 rte_memory_order_relaxed);
@@ -684,7 +685,7 @@ static int bnxt_stats_get_ext(struct rte_eth_dev *eth_dev,
 	num_q_stats = RTE_MIN(bp->tx_cp_nr_rings,
 			      (unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS);
 
-	for (i = 0; i < num_q_stats; i++) {
+	for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 		struct bnxt_tx_queue *txq = bp->tx_queues[i];
 		struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 		struct bnxt_ring_stats_ext ring_stats = {0};
@@ -697,7 +698,8 @@ static int bnxt_stats_get_ext(struct rte_eth_dev *eth_dev,
 		if (unlikely(rc))
 			return rc;
 
-		bnxt_fill_rte_eth_stats_ext(bnxt_stats, &ring_stats, qstats, i, false);
+		bnxt_fill_rte_eth_stats_ext(bnxt_stats, &ring_stats,
+					    i < num_q_stats ? qstats : NULL, i, false);
 	}
 
 	return rc;
@@ -724,7 +726,7 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 	num_q_stats = RTE_MIN(bp->rx_cp_nr_rings,
 			      (unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS);
 
-	for (i = 0; i < num_q_stats; i++) {
+	for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 		struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 		struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 		struct bnxt_ring_stats ring_stats = {0};
@@ -739,7 +741,8 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 		if (unlikely(rc))
 			return rc;
 
-		bnxt_fill_rte_eth_stats(bnxt_stats, &ring_stats, qstats, i, true);
+		bnxt_fill_rte_eth_stats(bnxt_stats, &ring_stats,
+					i < num_q_stats ? qstats : NULL, i, true);
 		bnxt_stats->rx_nombuf +=
 				rte_atomic_load_explicit(&rxq->rx_mbuf_alloc_fail,
 							 rte_memory_order_relaxed);
@@ -748,7 +751,7 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 	num_q_stats = RTE_MIN(bp->tx_cp_nr_rings,
 			      (unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS);
 
-	for (i = 0; i < num_q_stats; i++) {
+	for (i = 0; i < bp->tx_cp_nr_rings; i++) {
 		struct bnxt_tx_queue *txq = bp->tx_queues[i];
 		struct bnxt_cp_ring_info *cpr = txq->cp_ring;
 		struct bnxt_ring_stats ring_stats = {0};
@@ -761,7 +764,8 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 		if (unlikely(rc))
 			return rc;
 
-		bnxt_fill_rte_eth_stats(bnxt_stats, &ring_stats, qstats, i, false);
+		bnxt_fill_rte_eth_stats(bnxt_stats, &ring_stats,
+					i < num_q_stats ? qstats : NULL, i, false);
 		bnxt_stats->oerrors +=
 				rte_atomic_load_explicit(&txq->tx_mbuf_drop,
 							 rte_memory_order_relaxed);
-- 
2.45.4