[PATCH V2 net-next 7/9] net: hns3: add devlink reload support for VF
From: Guangbin Huang <hidden>
Date: 2021-07-15 07:49:04
Also in:
lkml
Subsystem:
hisilicon network subsystem 3 driver (hns3), hisilicon network subsystem driver, networking drivers, the rest · Maintainers:
Jian Shen, Jijie Shao, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Hao Chen <redacted> Add devlink reload support for HNS3 ethernet VF driver. Signed-off-by: Hao Chen <redacted> Signed-off-by: Guangbin Huang <redacted> --- .../hisilicon/hns3/hns3vf/hclgevf_devlink.c | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
index 49993c8be313..bce598913dc3 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c@@ -34,8 +34,76 @@ static int hclgevf_devlink_info_get(struct devlink *devlink, version_str); } +static int hclgevf_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 hclgevf_devlink_priv *priv = devlink_priv(devlink); + struct hclgevf_dev *hdev = priv->hdev; + struct hnae3_handle *h = &hdev->nic; + struct pci_dev *pdev = hdev->pdev; + int ret; + + if (test_bit(HCLGEVF_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 hclgevf_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 hclgevf_devlink_priv *priv = devlink_priv(devlink); + struct hclgevf_dev *hdev = priv->hdev; + struct hnae3_handle *h = &hdev->nic; + int ret; + + *actions_performed = BIT(action); + switch (action) { + case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: + hclgevf_devlink_get_param_setting(devlink); + 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 hclgevf_devlink_ops = { .info_get = hclgevf_devlink_info_get, + .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), + .reload_down = hclgevf_devlink_reload_down, + .reload_up = hclgevf_devlink_reload_up, }; int hclgevf_devlink_init(struct hclgevf_dev *hdev)
@@ -62,6 +130,8 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev) hdev->devlink = devlink; + devlink_reload_enable(devlink); + return 0; out_reg_fail:
@@ -76,6 +146,8 @@ void hclgevf_devlink_uninit(struct hclgevf_dev *hdev) if (!devlink) return; + devlink_reload_disable(devlink); + devlink_unregister(devlink); devlink_free(devlink);
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2.8.1