From 1cc9bc6e586782921f2bc31fd9f121e8fe2de100 Mon Sep 17 00:00:00 2001 From: Huazhong Tan Date: Sat, 11 Jan 2020 16:33:48 +0800 Subject: [PATCH] net: hns3: split hclgevf_reset() into preparing and rebuilding part hclgevf_reset() is a little bloated, and the process of VF FLR will be separated from the reset task later. So this patch splits hclgevf_reset() into hclgevf_reset_prepare() and hclge_reset_rebuild(), then FLR can also reuse these two functions. Also moves HNAE3_UP_CLIENT into hclgevf_reset_stack(). Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller --- .../hisilicon/hns3/hns3vf/hclgevf_main.c | 81 +++++++++---------- 1 file changed, 39 insertions(+), 42 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index cfa797ef9906..02b44d3a5ef1 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -1523,7 +1523,8 @@ static int hclgevf_reset_stack(struct hclgevf_dev *hdev) /* clear handshake status with IMP */ hclgevf_reset_handshake(hdev, false); - return 0; + /* bring up the nic to enable TX/RX again */ + return hclgevf_notify_client(hdev, HNAE3_UP_CLIENT); } static int hclgevf_reset_prepare_wait(struct hclgevf_dev *hdev) @@ -1603,7 +1604,7 @@ static void hclgevf_reset_err_handle(struct hclgevf_dev *hdev) } } -static int hclgevf_reset(struct hclgevf_dev *hdev) +static int hclgevf_reset_prepare(struct hclgevf_dev *hdev) { struct hnae3_ae_dev *ae_dev = pci_get_drvdata(hdev->pdev); int ret; @@ -1613,62 +1614,64 @@ static int hclgevf_reset(struct hclgevf_dev *hdev) */ ae_dev->reset_type = hdev->reset_type; hdev->rst_stats.rst_cnt++; - rtnl_lock(); + rtnl_lock(); /* bring down the nic to stop any ongoing TX/RX */ ret = hclgevf_notify_client(hdev, HNAE3_DOWN_CLIENT); - if (ret) - goto err_reset_lock; - rtnl_unlock(); - - ret = hclgevf_reset_prepare_wait(hdev); if (ret) - goto err_reset; + return ret; - /* check if VF could successfully fetch the hardware reset completion - * status from the hardware - */ - ret = hclgevf_reset_wait(hdev); - if (ret) { - /* can't do much in this situation, will disable VF */ - dev_err(&hdev->pdev->dev, - "VF failed(=%d) to fetch H/W reset completion status\n", - ret); - goto err_reset; - } + return hclgevf_reset_prepare_wait(hdev); +} + +static int hclgevf_reset_rebuild(struct hclgevf_dev *hdev) +{ + struct hnae3_ae_dev *ae_dev = pci_get_drvdata(hdev->pdev); + int ret; hdev->rst_stats.hw_rst_done_cnt++; rtnl_lock(); - /* now, re-initialize the nic client and ae device */ ret = hclgevf_reset_stack(hdev); + rtnl_unlock(); if (ret) { dev_err(&hdev->pdev->dev, "failed to reset VF stack\n"); - goto err_reset_lock; + return ret; } - /* bring up the nic to enable TX/RX again */ - ret = hclgevf_notify_client(hdev, HNAE3_UP_CLIENT); - if (ret) - goto err_reset_lock; - - rtnl_unlock(); - hdev->last_reset_time = jiffies; ae_dev->reset_type = HNAE3_NONE_RESET; hdev->rst_stats.rst_done_cnt++; hdev->rst_stats.rst_fail_cnt = 0; clear_bit(HCLGEVF_STATE_RST_FAIL, &hdev->state); - return ret; -err_reset_lock: - rtnl_unlock(); + return 0; +} + +static void hclgevf_reset(struct hclgevf_dev *hdev) +{ + if (hclgevf_reset_prepare(hdev)) + goto err_reset; + + /* check if VF could successfully fetch the hardware reset completion + * status from the hardware + */ + if (hclgevf_reset_wait(hdev)) { + /* can't do much in this situation, will disable VF */ + dev_err(&hdev->pdev->dev, + "failed to fetch H/W reset completion status\n"); + goto err_reset; + } + + if (hclgevf_reset_rebuild(hdev)) + goto err_reset; + + return; + err_reset: hclgevf_reset_err_handle(hdev); - - return ret; } static enum hnae3_reset_type hclgevf_get_reset_level(struct hclgevf_dev *hdev, @@ -1802,8 +1805,6 @@ static void hclgevf_reset_service_task(struct hclgevf_dev *hdev) { #define HCLGEVF_MAX_RESET_ATTEMPTS_CNT 3 - int ret; - if (!test_and_clear_bit(HCLGEVF_STATE_RST_SERVICE_SCHED, &hdev->state)) return; @@ -1822,12 +1823,8 @@ static void hclgevf_reset_service_task(struct hclgevf_dev *hdev) hdev->last_reset_time = jiffies; while ((hdev->reset_type = hclgevf_get_reset_level(hdev, &hdev->reset_pending)) - != HNAE3_NONE_RESET) { - ret = hclgevf_reset(hdev); - if (ret) - dev_err(&hdev->pdev->dev, - "VF stack reset failed %d.\n", ret); - } + != HNAE3_NONE_RESET) + hclgevf_reset(hdev); } else if (test_and_clear_bit(HCLGEVF_RESET_REQUESTED, &hdev->reset_state)) { /* we could be here when either of below happens: