[dpdk-dev] [PATCH] ethdev: report error on name truncation

[Nithin Kumar Dabilpuram]

Signed-off-by: Nithin Dabilpuram <ndabilpuram at marvell.com>
---
 lib/librte_ethdev/rte_ethdev.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 9d5107d..bd45445 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3588,9 +3588,17 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
 {
 	char z_name[RTE_MEMZONE_NAMESIZE];
 	const struct rte_memzone *mz;
+	int rc;
 
-	snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
-		 dev->data->port_id, queue_id, ring_name);
+	rc = snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
+		      dev->device->driver->name, ring_name,
+		      dev->data->port_id, queue_id);
+
+	if (rc >= RTE_MEMZONE_NAMESIZE) {
+		RTE_LOG(ERR, EAL, "%s(): truncated name\n", __func__);
+		rte_errno = ENAMETOOLONG;
+		return NULL;
+	}
 
 	mz = rte_memzone_lookup(z_name);
 	if (mz)
-- 
2.8.4