[dpdk-dev] [PATCH 07/13] net/bnxt: check if initialization is done before accessing stats

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

Maintain state of PMD initialization and check it before checking stats.
In certain cases, we might end up accessing stats before the required
HWRM commands are processed by FW.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt.h        | 1 +
 drivers/net/bnxt/bnxt_ethdev.c | 2 ++
 drivers/net/bnxt/bnxt_stats.c  | 9 +++++++++
 3 files changed, 12 insertions(+)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index 345750be7..7e3d7aefd 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -245,6 +245,7 @@ struct bnxt {
 #define BNXT_FLAG_UPDATE_HASH	(1 << 5)
 #define BNXT_FLAG_PTP_SUPPORTED	(1 << 6)
 #define BNXT_FLAG_MULTI_HOST    (1 << 7)
+#define BNXT_FLAG_INIT_DONE	(1 << 31)
 #define BNXT_PF(bp)		(!((bp)->flags & BNXT_FLAG_VF))
 #define BNXT_VF(bp)		((bp)->flags & BNXT_FLAG_VF)
 #define BNXT_NPAR(bp)		((bp)->port_partition_type)
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 475faac2a..c2d158dea 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -590,6 +590,7 @@ static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev)
 	if (rc)
 		goto error;
 
+	bp->flags |= BNXT_FLAG_INIT_DONE;
 	return 0;
 
 error:
@@ -635,6 +636,7 @@ static void bnxt_dev_stop_op(struct rte_eth_dev *eth_dev)
 	}
 	bnxt_set_hwrm_link_config(bp, false);
 	bnxt_hwrm_port_clr_stats(bp);
+	bp->flags &= ~BNXT_FLAG_INIT_DONE;
 	bnxt_shutdown_nic(bp);
 	bp->dev_stopped = 1;
 }
diff --git a/drivers/net/bnxt/bnxt_stats.c b/drivers/net/bnxt/bnxt_stats.c
index 2606e93c1..470c6438d 100644
--- a/drivers/net/bnxt/bnxt_stats.c
+++ b/drivers/net/bnxt/bnxt_stats.c
@@ -236,6 +236,10 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 	struct bnxt *bp = eth_dev->data->dev_private;
 
 	memset(bnxt_stats, 0, sizeof(*bnxt_stats));
+	if (!(bp->flags & BNXT_FLAG_INIT_DONE)) {
+		RTE_LOG(ERR, PMD, "Device Initialization not complete!\n");
+		return 0;
+	}
 
 	for (i = 0; i < bp->rx_cp_nr_rings; i++) {
 		struct bnxt_rx_queue *rxq = bp->rx_queues[i];
@@ -267,6 +271,11 @@ void bnxt_stats_reset_op(struct rte_eth_dev *eth_dev)
 {
 	struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
 
+	if (!(bp->flags & BNXT_FLAG_INIT_DONE)) {
+		RTE_LOG(ERR, PMD, "Device Initialization not complete!\n");
+		return;
+	}
+
 	bnxt_clear_all_hwrm_stat_ctxs(bp);
 	rte_atomic64_clear(&bp->rx_mbuf_alloc_fail);
 }
-- 
2.14.3 (Apple Git-98)