From 39cfbc9c4fc4a2888548c2624789e42e3f775721 Mon Sep 17 00:00:00 2001 From: Huazhong Tan Date: Thu, 20 Dec 2018 11:52:02 +0800 Subject: [PATCH] net: hns3: reset tqp while doing DOWN operation 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 Signed-off-by: Peng Li Signed-off-by: David S. Miller --- 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); -- 2.7.4