[PATCH v18 09/18] net/idpf: add support for MTU configuration

[beilei . xing]

From: Junfeng Guo <junfeng....@intel.com>

Add dev ops mtu_set.

Signed-off-by: Beilei Xing <beilei.x...@intel.com>
Signed-off-by: Junfeng Guo <junfeng....@intel.com>
---
 doc/guides/nics/features/idpf.ini |  1 +
 drivers/net/idpf/idpf_ethdev.c    | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/doc/guides/nics/features/idpf.ini 
b/doc/guides/nics/features/idpf.ini
index 46aab2eb61..d722c49fde 100644
--- a/doc/guides/nics/features/idpf.ini
+++ b/doc/guides/nics/features/idpf.ini
@@ -4,6 +4,7 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+MTU update           = Y
 Linux                = Y
 x86-32               = Y
 x86-64               = Y
diff --git a/drivers/net/idpf/idpf_ethdev.c b/drivers/net/idpf/idpf_ethdev.c
index 1485f40e71..856f3d7266 100644
--- a/drivers/net/idpf/idpf_ethdev.c
+++ b/drivers/net/idpf/idpf_ethdev.c
@@ -83,6 +83,18 @@ idpf_dev_info_get(struct rte_eth_dev *dev, struct 
rte_eth_dev_info *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)
 {
@@ -760,6 +772,7 @@ static const struct eth_dev_ops idpf_eth_dev_ops = {
        .tx_queue_stop                  = idpf_tx_queue_stop,
        .rx_queue_release               = idpf_dev_rx_queue_release,
        .tx_queue_release               = idpf_dev_tx_queue_release,
+       .mtu_set                        = idpf_dev_mtu_set,
 };
 
 static uint16_t
-- 
2.26.2