[PATCH net-next 5/9] net: hns3: reset tqp while doing DOWN operation

[Peng Li]

From: Huazhong Tan <tanhuazh...@huawei.com>

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 <tanhuazh...@huawei.com>
Signed-off-by: Peng Li <lipeng...@huawei.com>
---
 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(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 0b04d04..98ae282 100644
--- 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_handle *handle)
 {
        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_handle *handle)
                return;
        }
 
+       for (i = 0; i < handle->kinfo.num_tqps; i++)
+               hclge_reset_tqp(handle, i);
+
        /* Mac disable */
        hclge_cfg_mac_mode(hdev, false);
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 919c3aa..156242f 100644
--- 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_handle *handle)
 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);
-- 
1.9.1