[PATCH 08/11] net/enetfec: fix to add check for Rx/Tx deferred queue

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

This patch adds a check to reject configuration of Tx deferred start,
which is not supported by the enetfec PMD. This ensures that unsupported
features are explicitly handled and reported.

Fixes: bb5b5bf1e5c6 ("net/enetfec: support queue configuration")
Cc: stable@dpdk.org

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

diff --git a/drivers/net/enetfec/enet_ethdev.c b/drivers/net/enetfec/enet_ethdev.c
index 60bb4f7ebd..6d4d3e0fc2 100644
--- a/drivers/net/enetfec/enet_ethdev.c
+++ b/drivers/net/enetfec/enet_ethdev.c
@@ -384,6 +384,12 @@ enetfec_tx_queue_setup(struct rte_eth_dev *dev,
 		return -EINVAL;
 	}
 
+	/* Tx deferred start is not supported */
+	if (tx_conf->tx_deferred_start) {
+		ENETFEC_PMD_ERR("Tx deferred start not supported");
+		return -EINVAL;
+	}
+
 	/* allocate transmit queue */
 	txq = rte_zmalloc(NULL, sizeof(*txq), RTE_CACHE_LINE_SIZE);
 	if (txq == NULL) {
-- 
2.25.1