net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE

[ 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>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index a93c7eb..28a90ea 100644 (file)
--- 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 42e82bf..69d0815 100644 (file)
--- 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);