net/hns3: remove restriction on setting VF MTU

[dpdk.git] / drivers / net / hns3 / hns3_ethdev_vf.c

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 0239d5e..0c79202 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -619,12 +619,14 @@ hns3vf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
        uint32_t frame_size = mtu + HNS3_ETH_OVERHEAD;
        int ret;
 
-       if (dev->data->dev_started) {
-               hns3_err(hw, "Failed to set mtu, port %u must be stopped "
-                        "before configuration", dev->data->port_id);
-               return -EBUSY;
-       }
-
+       /*
+        * The hns3 PF/VF devices on the same port share the hardware MTU
+        * configuration. Currently, we send mailbox to inform hns3 PF kernel
+        * ethdev driver to finish hardware MTU configuration in hns3 VF PMD
+        * driver, there is no need to stop the port for hns3 VF device, and the
+        * MTU value issued by hns3 VF PMD driver must be less than or equal to
+        * PF's MTU.
+        */
        if (rte_atomic16_read(&hw->reset.resetting)) {
                hns3_err(hw, "Failed to set mtu during resetting");
                return -EIO;