From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Thu, 20 Dec 2018 11:52:02 +0800
Subject: net: hns3: reset tqp while doing DOWN operation
Patch-mainline: v5.0-rc1
Git-commit: 39cfbc9c4fc4a2888548c2624789e42e3f775721
References: bsc#1104353 FATE#326415
While doing DOWN operation, the driver will reclaim the memory which has
already used for TX. If the hardware is processing this memory, it will
cause a RCB error to the hardware. According the hardware's description,
the driver should reset the tqp before reclaim the memory during DOWN.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@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_main.c | 4 ++++
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 4 ++++
2 files changed, 8 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -5331,6 +5331,7 @@ static void hclge_ae_stop(struct hnae3_h
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
+ int i;
set_bit(HCLGE_STATE_DOWN, &hdev->state);
@@ -5343,6 +5344,9 @@ static void hclge_ae_stop(struct hnae3_h
return;
}
+ for (i = 0; i < handle->kinfo.num_tqps; i++)
+ hclge_reset_tqp(handle, i);
+
/* Mac disable */
hclge_cfg_mac_mode(hdev, false);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1870,9 +1870,13 @@ static int hclgevf_ae_start(struct hnae3
static void hclgevf_ae_stop(struct hnae3_handle *handle)
{
struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+ int i;
set_bit(HCLGEVF_STATE_DOWN, &hdev->state);
+ for (i = 0; i < handle->kinfo.num_tqps; i++)
+ hclgevf_reset_tqp(handle, i);
+
/* reset tqp stats */
hclgevf_reset_tqp_stats(handle);
hclgevf_update_link_status(hdev, 0);