From: Hao Chen <chenhao288@hisilicon.com>
Date: Mon, 26 Jul 2021 10:47:06 +0800
Subject: net: hns3: add devlink reload support for PF
Patch-mainline: v5.15-rc1
Git-commit: 98fa7525d36091da9eeafb94f98bf9bbb3d6748e
References: bsc#1190336
Add devlink reload support for HNS3 ethernet PF driver.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c | 70 +++++++++++++
1 file changed, 70 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
@@ -34,8 +34,74 @@ static int hclge_devlink_info_get(struct
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->devlink = devlink;
+ devlink_reload_enable(devlink);
+
return 0;
out_reg_fail:
@@ -76,6 +144,8 @@ void hclge_devlink_uninit(struct hclge_d
if (!devlink)
return;
+ devlink_reload_disable(devlink);
+
devlink_unregister(devlink);
devlink_free(devlink);