[PATCH 5.10 58/93] net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE

Greg Kroah-Hartman
2021-10-04T13:27:10Z

From: Jian Shen <shenjian15@huawei.com>

[ Upstream commit 0472e95ffeac8e61259eec17ab61608c6b35599d ]

HCLGE_FLAG_MQPRIO_ENABLE is supposed to set when enable
multiple TCs with tc mqprio, and HCLGE_FLAG_DCB_ENABLE is
supposed to set when enable multiple TCs with ets. But
the driver mixed the flags when updating the tm configuration.

Furtherly, PFC should be available when HCLGE_FLAG_MQPRIO_ENABLE
too, so remove the unnecessary limitation.

Fixes: 5a5c90917467 ("net: hns3: add support for tc mqprio offload")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../hisilicon/hns3/hns3pf/hclge_dcb.c | 7 +++--
.../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 31 +++----------------
2 files changed, 10 insertions(+), 28 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index a93c7eb4e7cb..28a90ead4795 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
@@ -248,6 +248,10 @@ static int hclge_ieee_setets(struct hnae3_handle *h, struct ieee_ets *ets)
}

hclge_tm_schd_info_update(hdev, num_tc);
+ if (num_tc > 1)
+ hdev->flag |= HCLGE_FLAG_DCB_ENABLE;
+ else
+ hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE;

ret = hclge_ieee_ets_to_tm_info(hdev, ets);
if (ret)
@@ -313,8 +317,7 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
u8 i, j, pfc_map, *prio_tc;
int ret;

- if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
- hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
+ if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
return -EINVAL;

if (pfc->pfc_en == hdev->tm_info.pfc_en)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 42e82bf69b8e..69d081515c60 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -646,14 +646,6 @@ static void hclge_tm_tc_info_init(struct hclge_dev *hdev)
for (i = 0; i < HNAE3_MAX_USER_PRIO; i++)
hdev->tm_info.prio_tc[i] =
(i >= hdev->tm_info.num_tc) ? 0 : i;
-
- /* 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;
}

static void hclge_tm_pg_info_init(struct hclge_dev *hdev)
@@ -684,10 +676,10 @@ static void hclge_tm_pg_info_init(struct hclge_dev *hdev)

static void hclge_update_fc_mode_by_dcb_flag(struct hclge_dev *hdev)
{
- if (!(hdev->flag & HCLGE_FLAG_DCB_ENABLE)) {
+ if (hdev->tm_info.num_tc == 1 && !hdev->tm_info.pfc_en) {
if (hdev->fc_mode_last_time == HCLGE_FC_PFC)
dev_warn(&hdev->pdev->dev,
- "DCB is disable, but last mode is FC_PFC\n");
+ "Only 1 tc used, but last mode is FC_PFC\n");

hdev->tm_info.fc_mode = hdev->fc_mode_last_time;
} else if (hdev->tm_info.fc_mode != HCLGE_FC_PFC) {
@@ -713,7 +705,7 @@ static void hclge_update_fc_mode(struct hclge_dev *hdev)
}
}

-static void hclge_pfc_info_init(struct hclge_dev *hdev)
+void hclge_tm_pfc_info_update(struct hclge_dev *hdev)
{
if (hdev->ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
hclge_update_fc_mode(hdev);
@@ -729,7 +721,7 @@ static void hclge_tm_schd_info_init(struct hclge_dev *hdev)

hclge_tm_vport_info_update(hdev);

- hclge_pfc_info_init(hdev);
+ hclge_tm_pfc_info_update(hdev);
}

static int hclge_tm_pg_to_pri_map(struct hclge_dev *hdev)
@@ -1465,19 +1457,6 @@ 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;
@@ -1523,7 +1502,7 @@ int hclge_tm_vport_map_update(struct hclge_dev *hdev)
if (ret)
return ret;

- if (!(hdev->flag & HCLGE_FLAG_DCB_ENABLE))
+ if (hdev->tm_info.num_tc == 1 && !hdev->tm_info.pfc_en)
return 0;

return hclge_tm_bp_setup(hdev);
--
2.33.0