[dpdk-stable] [PATCH 2/2] net/qede: fix clearing of queue stats

[Rasesh Mody]

[ backported from upstream commit ce26be6ed48922cbc0b1d64c622d3dd5413c96bf ]

Add support to clear the per queue statistics thereby clearing xstats
counters.
Fixes: 7634c5f91569 ("net/qede: add queue statistics")

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
---
 drivers/net/qede/qede_ethdev.c |   63 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index d1b89ea..5275ef9 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -282,6 +282,67 @@ static void qede_set_ucast_cmn_params(struct ecore_filter_ucast *ucast)
 	return 0;
 }
 
+static void qede_reset_queue_stats(struct qede_dev *qdev, bool xstats)
+{
+#ifdef RTE_LIBRTE_QEDE_DEBUG_DRIVER
+	struct ecore_dev *edev = QEDE_INIT_EDEV(qdev);
+#endif
+	unsigned int i = 0, j = 0, qid;
+	unsigned int rxq_stat_cntrs, txq_stat_cntrs;
+	struct qede_tx_queue *txq;
+
+	DP_VERBOSE(edev, ECORE_MSG_DEBUG, "Clearing queue stats\n");
+
+	rxq_stat_cntrs = RTE_MIN(QEDE_RSS_COUNT(qdev),
+			       RTE_ETHDEV_QUEUE_STAT_CNTRS);
+	txq_stat_cntrs = RTE_MIN(QEDE_TSS_COUNT(qdev),
+			       RTE_ETHDEV_QUEUE_STAT_CNTRS);
+
+	for (qid = 0; qid < QEDE_QUEUE_CNT(qdev); qid++) {
+		if (qdev->fp_array[qid].type & QEDE_FASTPATH_RX) {
+			OSAL_MEMSET(((char *)(qdev->fp_array[qid].rxq)) +
+			    offsetof(struct qede_rx_queue, rcv_pkts), 0,
+			    sizeof(uint64_t));
+			OSAL_MEMSET(((char *)(qdev->fp_array[qid].rxq)) +
+			    offsetof(struct qede_rx_queue, rx_hw_errors), 0,
+			    sizeof(uint64_t));
+			OSAL_MEMSET(((char *)(qdev->fp_array[qid].rxq)) +
+			    offsetof(struct qede_rx_queue, rx_alloc_errors), 0,
+			    sizeof(uint64_t));
+
+			if (xstats)
+				for (j = 0;
+				     j < RTE_DIM(qede_rxq_xstats_strings); j++)
+					OSAL_MEMSET((((char *)
+					    (qdev->fp_array[qid].rxq)) +
+					    qede_rxq_xstats_strings[j].offset),
+					    0,
+					    sizeof(uint64_t));
+
+			i++;
+			if (i == rxq_stat_cntrs)
+				break;
+		}
+	}
+
+	i = 0;
+
+	for (qid = 0; qid < QEDE_QUEUE_CNT(qdev); qid++) {
+		if (qdev->fp_array[qid].type & QEDE_FASTPATH_TX) {
+			txq = qdev->fp_array[(qid)].txqs[0];
+
+			OSAL_MEMSET((uint64_t *)(uintptr_t)
+				(((uint64_t)(uintptr_t)(txq)) +
+				 offsetof(struct qede_tx_queue, xmit_pkts)), 0,
+			    sizeof(uint64_t));
+
+			i++;
+			if (i == txq_stat_cntrs)
+				break;
+		}
+	}
+}
+
 static int
 qede_mcast_filter(struct rte_eth_dev *eth_dev, struct ecore_filter_ucast *mcast,
 		  bool add)
@@ -1130,6 +1191,7 @@ static void qede_dev_close(struct rte_eth_dev *eth_dev)
 	struct ecore_dev *edev = &qdev->edev;
 
 	ecore_reset_vport_stats(edev);
+	qede_reset_queue_stats(qdev, true);
 }
 
 int qede_dev_set_link_state(struct rte_eth_dev *eth_dev, bool link_up)
@@ -1165,6 +1227,7 @@ static void qede_reset_stats(struct rte_eth_dev *eth_dev)
 	struct ecore_dev *edev = &qdev->edev;
 
 	ecore_reset_vport_stats(edev);
+	qede_reset_queue_stats(qdev, false);
 }
 
 static void qede_allmulticast_enable(struct rte_eth_dev *eth_dev)
-- 
1.7.10.3