[dpdk-dev] [PATCH 4/5] net/dpaa: fix the xstats implementation

[Hemant Agrawal <hemant.agrawal@nxp.com>]

Some of the applications are expecting that if n is 0, it shall
return the supported number of stats. e.g. VPP

Fixes: b21ed3e2a16d ("net/dpaa: support extended statistics")
Cc: stable@dpdk.org

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/net/dpaa/dpaa_ethdev.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index b2740b4..136f716 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -354,12 +354,12 @@ dpaa_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 	unsigned int i = 0, num = RTE_DIM(dpaa_xstats_strings);
 	uint64_t values[sizeof(struct dpaa_if_stats) / 8];
 
-	if (xstats == NULL)
-		return 0;
-
 	if (n < num)
 		return num;
 
+	if (xstats == NULL)
+		return 0;
+
 	fman_if_stats_get_all(dpaa_intf->fif, values,
 			      sizeof(struct dpaa_if_stats) / 8);
 
-- 
2.7.4