[RFC v3 10/11] net/idpf: support MTU configuration

[Junfeng Guo]

support ops mtu_set.

Signed-off-by: Beilei Xing <beilei.xing at intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo at intel.com>
---
 drivers/net/idpf/idpf_ethdev.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/idpf/idpf_ethdev.c b/drivers/net/idpf/idpf_ethdev.c
index e46cadf83a..9b0bbca4a5 100644
--- a/drivers/net/idpf/idpf_ethdev.c
+++ b/drivers/net/idpf/idpf_ethdev.c
@@ -34,6 +34,7 @@ static int idpf_dev_stop(struct rte_eth_dev *dev);
 static int idpf_dev_close(struct rte_eth_dev *dev);
 static int idpf_dev_info_get(struct rte_eth_dev *dev,
 			     struct rte_eth_dev_info *dev_info);
+static int idpf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
 
 int
 idpf_dev_link_update(struct rte_eth_dev *dev,
@@ -72,6 +73,7 @@ static const struct eth_dev_ops idpf_eth_dev_ops = {
 	.tx_queue_release		= idpf_dev_tx_queue_release,
 	.dev_infos_get			= idpf_dev_info_get,
 	.link_update			= idpf_dev_link_update,
+	.mtu_set			= idpf_dev_mtu_set,
 };
 
 static int
@@ -142,6 +144,18 @@ idpf_dev_info_get(__rte_unused struct rte_eth_dev *dev, struct rte_eth_dev_info
 	return 0;
 }
 
+static int
+idpf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu __rte_unused)
+{
+	/* mtu setting is forbidden if port is start */
+	if (dev->data->dev_started) {
+		PMD_DRV_LOG(ERR, "port must be stopped before configuration");
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
 static int
 idpf_init_vport_req_info(struct rte_eth_dev *dev)
 {
-- 
2.25.1