[dpdk-stable] [PATCH 18.11 04/19] net/bnxt: fix stats errors handling

[Somnath Kotur <somnath.kotur@broadcom.com>]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

This patch fixes few checks and few return values while getting
and clearing device statistics.

1. Fixed to return standard error code.
2. Clubbed few error checks
3. Removed an unnecessary return check

Fixes: bfb9c2260be2 ("net/bnxt: support xstats get/reset")
Fixes: 88920136688c ("net/bnxt: support xstats get by id")

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_stats.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_stats.c b/drivers/net/bnxt/bnxt_stats.c
index 252a0a6..497da0b 100644
--- a/drivers/net/bnxt/bnxt_stats.c
+++ b/drivers/net/bnxt/bnxt_stats.c
@@ -387,7 +387,7 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 	memset(bnxt_stats, 0, sizeof(*bnxt_stats));
 	if (!(bp->flags & BNXT_FLAG_INIT_DONE)) {
 		PMD_DRV_LOG(ERR, "Device Initialization not complete!\n");
-		return -1;
+		return -EIO;
 	}
 
 	num_q_stats = RTE_MIN(bp->rx_cp_nr_rings,
@@ -418,8 +418,6 @@ int bnxt_stats_get_op(struct rte_eth_dev *eth_dev,
 			return rc;
 	}
 	rc = bnxt_hwrm_func_qstats(bp, 0xffff, bnxt_stats);
-	if (unlikely(rc))
-		return rc;
 	return rc;
 }
 
@@ -585,16 +583,20 @@ int bnxt_dev_xstats_get_names_op(__rte_unused struct rte_eth_dev *eth_dev,
 void bnxt_dev_xstats_reset_op(struct rte_eth_dev *eth_dev)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
+	int ret;
 
-	if (bp->flags & BNXT_FLAG_PORT_STATS && BNXT_SINGLE_PF(bp))
-		bnxt_hwrm_port_clr_stats(bp);
-
-	if (BNXT_VF(bp))
-		PMD_DRV_LOG(ERR, "Operation not supported on a VF device\n");
-	if (!BNXT_SINGLE_PF(bp))
-		PMD_DRV_LOG(ERR, "Operation not supported on a MF device\n");
-	if (!(bp->flags & BNXT_FLAG_PORT_STATS))
+	if (BNXT_VF(bp) || !BNXT_SINGLE_PF(bp) ||
+	    !(bp->flags & BNXT_FLAG_PORT_STATS)) {
 		PMD_DRV_LOG(ERR, "Operation not supported\n");
+		return;
+	}
+
+	ret = bnxt_hwrm_port_clr_stats(bp);
+	if (ret != 0)
+		PMD_DRV_LOG(ERR, "Failed to reset xstats: %s\n",
+			    strerror(-ret));
+
+	return;
 }
 
 int bnxt_dev_xstats_get_by_id_op(struct rte_eth_dev *dev, const uint64_t *ids,
@@ -616,7 +618,7 @@ int bnxt_dev_xstats_get_by_id_op(struct rte_eth_dev *dev, const uint64_t *ids,
 	for (i = 0; i < limit; i++) {
 		if (ids[i] >= stat_cnt) {
 			PMD_DRV_LOG(ERR, "id value isn't valid");
-			return -1;
+			return -EINVAL;
 		}
 		values[i] = values_copy[ids[i]];
 	}
@@ -644,7 +646,7 @@ int bnxt_dev_xstats_get_names_by_id_op(struct rte_eth_dev *dev,
 	for (i = 0; i < limit; i++) {
 		if (ids[i] >= stat_cnt) {
 			PMD_DRV_LOG(ERR, "id value isn't valid");
-			return -1;
+			return -EINVAL;
 		}
 		strcpy(xstats_names[i].name,
 				xstats_names_copy[ids[i]].name);
-- 
2.10.1