Commit 98fa7525 authored by Hao Chen's avatar Hao Chen Committed by David S. Miller
Browse files

net: hns3: add devlink reload support for PF 



Add devlink reload support for HNS3 ethernet PF driver.

Signed-off-by: default avatarHao Chen <chenhao288@hisilicon.com>
Signed-off-by: default avatarGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bd85e55b

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c

+70 −0
Original line number Diff line number Diff line
@@ -34,8 +34,74 @@ static int hclge_devlink_info_get(struct devlink *devlink, 
						version_str);

}



static int hclge_devlink_reload_down(struct devlink *devlink, bool netns_change,

				     enum devlink_reload_action action,

				     enum devlink_reload_limit limit,

				     struct netlink_ext_ack *extack)

{

	struct hclge_devlink_priv *priv = devlink_priv(devlink);

	struct hclge_dev *hdev = priv->hdev;

	struct hnae3_handle *h = &hdev->vport->nic;

	struct pci_dev *pdev = hdev->pdev;

	int ret;



	if (test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) {

		dev_err(&pdev->dev, "reset is handling\n");

		return -EBUSY;

	}



	switch (action) {

	case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:

		rtnl_lock();

		ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT);

		if (ret) {

			rtnl_unlock();

			return ret;

		}



		ret = hdev->nic_client->ops->reset_notify(h,

							  HNAE3_UNINIT_CLIENT);

		rtnl_unlock();

		return ret;

	default:

		return -EOPNOTSUPP;

	}

}



static int hclge_devlink_reload_up(struct devlink *devlink,

				   enum devlink_reload_action action,

				   enum devlink_reload_limit limit,

				   u32 *actions_performed,

				   struct netlink_ext_ack *extack)

{

	struct hclge_devlink_priv *priv = devlink_priv(devlink);

	struct hclge_dev *hdev = priv->hdev;

	struct hnae3_handle *h = &hdev->vport->nic;

	int ret;



	*actions_performed = BIT(action);

	switch (action) {

	case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:

		rtnl_lock();

		ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT);

		if (ret) {

			rtnl_unlock();

			return ret;

		}



		ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT);

		rtnl_unlock();

		return ret;

	default:

		return -EOPNOTSUPP;

	}

}



static const struct devlink_ops hclge_devlink_ops = {

	.info_get = hclge_devlink_info_get,

	.reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),

	.reload_down = hclge_devlink_reload_down,

	.reload_up = hclge_devlink_reload_up,

};



int hclge_devlink_init(struct hclge_dev *hdev)
@@ -62,6 +128,8 @@ int hclge_devlink_init(struct hclge_dev *hdev) 


	hdev->devlink = devlink;



	devlink_reload_enable(devlink);



	return 0;



out_reg_fail:
@@ -76,6 +144,8 @@ void hclge_devlink_uninit(struct hclge_dev *hdev) 
	if (!devlink)

		return;



	devlink_reload_disable(devlink);



	devlink_unregister(devlink);



	devlink_free(devlink);