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net/hns3: remove restriction on setting VF MTU

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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.

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
This commit is contained in:
Chengchang Tang 2020-03-09 17:32:41 +08:00 committed by Ferruh Yigit
parent ef2e785c36
commit 4bf2c84bd8
1 changed files with 8 additions and 6 deletions
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14
drivers/net/hns3/hns3_ethdev_vf.c
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@ -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;