[PATCH net-next 02/12] net: hns3: enable DCB when TC num is one and pfc_en is non-zero

From: Huazhong Tan
Date: Fri Jun 28 2019 - 07:52:20 EST


From: Yunsheng Lin <linyunsheng@xxxxxxxxxx>

Currently when TC num is one, the DCB will be disabled no matter if
pfc_en is non-zero or not.

This patch enables the DCB if pfc_en is non-zero, even when TC num
is one.

Signed-off-by: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
Signed-off-by: Huazhong Tan <tanhuazhong@xxxxxxxxxx>
---
.../net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 2 ++
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 19 +++++++++++++++++--
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h | 1 +
3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index 1161361..bac4ce1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
@@ -325,6 +325,8 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
hdev->tm_info.hw_pfc_map = pfc_map;
hdev->tm_info.pfc_en = pfc->pfc_en;

+ hclge_tm_pfc_info_update(hdev);
+
return hclge_pause_setup_hw(hdev, false);
}

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 9edae5f..cb2fb5a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -597,8 +597,10 @@ static void hclge_tm_tc_info_init(struct hclge_dev *hdev)
hdev->tm_info.prio_tc[i] =
(i >= hdev->tm_info.num_tc) ? 0 : i;

- /* DCB is enabled if we have more than 1 TC */
- if (hdev->tm_info.num_tc > 1)
+ /* DCB is enabled if we have more than 1 TC or pfc_en is
+ * non-zero.
+ */
+ if (hdev->tm_info.num_tc > 1 || hdev->tm_info.pfc_en)
hdev->flag |= HCLGE_FLAG_DCB_ENABLE;
else
hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE;
@@ -1388,6 +1390,19 @@ void hclge_tm_schd_info_update(struct hclge_dev *hdev, u8 num_tc)
hclge_tm_schd_info_init(hdev);
}

+void hclge_tm_pfc_info_update(struct hclge_dev *hdev)
+{
+ /* DCB is enabled if we have more than 1 TC or pfc_en is
+ * non-zero.
+ */
+ if (hdev->tm_info.num_tc > 1 || hdev->tm_info.pfc_en)
+ hdev->flag |= HCLGE_FLAG_DCB_ENABLE;
+ else
+ hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE;
+
+ hclge_pfc_info_init(hdev);
+}
+
int hclge_tm_init_hw(struct hclge_dev *hdev, bool init)
{
int ret;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h
index f60e540..5150daa 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h
@@ -147,6 +147,7 @@ int hclge_pause_setup_hw(struct hclge_dev *hdev, bool init);
int hclge_tm_schd_setup_hw(struct hclge_dev *hdev);
void hclge_tm_prio_tc_info_update(struct hclge_dev *hdev, u8 *prio_tc);
void hclge_tm_schd_info_update(struct hclge_dev *hdev, u8 num_tc);
+void hclge_tm_pfc_info_update(struct hclge_dev *hdev);
int hclge_tm_dwrr_cfg(struct hclge_dev *hdev);
int hclge_tm_init_hw(struct hclge_dev *hdev, bool init);
int hclge_mac_pause_en_cfg(struct hclge_dev *hdev, bool tx, bool rx);
--
2.7.4