[PATCH net-next 10/12] net: hns3: add ETS TC weight setting in SSU module

[Huazhong Tan]

From: Yunsheng Lin <linyunsh...@huawei.com>

This patch sets the TC weight in SSU module according to
info in tm_info.

Also, zero weight of TC weight in SSU ETS module means enabling
strict priority, so do not allow zero weight when in ETS mode.

Signed-off-by: Yunsheng Lin <linyunsh...@huawei.com>
Signed-off-by: Peng Li <lipeng...@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazh...@huawei.com>
---
 .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 44316602c2fc..bad975ebe137 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -947,6 +947,36 @@ static int hclge_tm_pri_tc_base_dwrr_cfg(struct hclge_dev 
*hdev)
        return 0;
 }
 
+static int hclge_tm_ets_tc_dwrr_cfg(struct hclge_dev *hdev)
+{
+#define DEFAULT_TC_WEIGHT      1
+#define DEFAULT_TC_OFFSET      14
+
+       struct hclge_ets_tc_weight_cmd *ets_weight;
+       struct hclge_desc desc;
+       int i;
+
+       hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_ETS_TC_WEIGHT, false);
+       ets_weight = (struct hclge_ets_tc_weight_cmd *)desc.data;
+
+       for (i = 0; i < HNAE3_MAX_TC; i++) {
+               struct hclge_pg_info *pg_info;
+
+               ets_weight->tc_weight[i] = DEFAULT_TC_WEIGHT;
+
+               if (!(hdev->hw_tc_map & BIT(i)))
+                       continue;
+
+               pg_info =
+                       &hdev->tm_info.pg_info[hdev->tm_info.tc_info[i].pgid];
+               ets_weight->tc_weight[i] = pg_info->tc_dwrr[i];
+       }
+
+       ets_weight->weight_offset = DEFAULT_TC_OFFSET;
+
+       return hclge_cmd_send(&hdev->hw, &desc, 1);
+}
+
 static int hclge_tm_pri_vnet_base_dwrr_pri_cfg(struct hclge_vport *vport)
 {
        struct hnae3_knic_private_info *kinfo = &vport->nic.kinfo;
@@ -996,6 +1026,19 @@ static int hclge_tm_pri_dwrr_cfg(struct hclge_dev *hdev)
                ret = hclge_tm_pri_tc_base_dwrr_cfg(hdev);
                if (ret)
                        return ret;
+
+               if (!hnae3_dev_dcb_supported(hdev))
+                       return 0;
+
+               ret = hclge_tm_ets_tc_dwrr_cfg(hdev);
+               if (ret == -EOPNOTSUPP) {
+                       dev_warn(&hdev->pdev->dev,
+                                "fw %08x does't support ets tc weight cmd\n",
+                                hdev->fw_version);
+                       ret = 0;
+               }
+
+               return ret;
        } else {
                ret = hclge_tm_pri_vnet_base_dwrr_cfg(hdev);
                if (ret)
-- 
2.20.1