[dpdk-dev] [PATCH v2 2/3] net/qede: fix to reject config with no Rx queue

[Rasesh Mody <rasesh.mody@cavium.com>]

From: Harish Patil <harish.patil@cavium.com>

The qede firmware expects minimum one RX queue to be created, otherwise
it results in firmware exception. So a check is added to prevent that.

Fixes: ec94dbc57362 ("qede: add base driver")
Cc: stable@dpdk.org

Signed-off-by: Harish Patil <harish.patil@cavium.com>
---
 drivers/net/qede/qede_ethdev.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index cc473d6..0128cec 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -1233,6 +1233,14 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev)
 		}
 	}
 
+	/* We need to have min 1 RX queue.There is no min check in
+	 * rte_eth_dev_configure(), so we are checking it here.
+	 */
+	if (eth_dev->data->nb_rx_queues == 0) {
+		DP_ERR(edev, "Minimum one RX queue is required\n");
+		return -EINVAL;
+	}
+
 	/* Sanity checks and throw warnings */
 	if (rxmode->enable_scatter)
 		eth_dev->data->scattered_rx = 1;
-- 
1.7.10.3