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Commit 67bf2541 authored by Yunsheng Lin's avatar Yunsheng Lin Committed by David S. Miller
Browse files

net: hns3: Fixes the back pressure setting when sriov is enabled 



When sriov is enabled, the Qset and tc mapping is not longer one
to one relation.

This patch fixes it by mapping all pf and vf's Qset to tc.

Fixes: 84844054 ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver")
Signed-off-by: default avatarYunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0c698257

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c

+40 −5
Original line number Diff line number Diff line
@@ -500,7 +500,8 @@ static int hclge_tm_qs_schd_mode_cfg(struct hclge_dev *hdev, u16 qs_id, u8 mode) 
	return hclge_cmd_send(&hdev->hw, &desc, 1);

}



static int hclge_tm_qs_bp_cfg(struct hclge_dev *hdev, u8 tc)

static int hclge_tm_qs_bp_cfg(struct hclge_dev *hdev, u8 tc, u8 grp_id,

			      u32 bit_map)

{

	struct hclge_bp_to_qs_map_cmd *bp_to_qs_map_cmd;

	struct hclge_desc desc;
@@ -511,9 +512,8 @@ static int hclge_tm_qs_bp_cfg(struct hclge_dev *hdev, u8 tc) 
	bp_to_qs_map_cmd = (struct hclge_bp_to_qs_map_cmd *)desc.data;



	bp_to_qs_map_cmd->tc_id = tc;



	/* Qset and tc is one by one mapping */

	bp_to_qs_map_cmd->qs_bit_map = cpu_to_le32(1 << tc);

	bp_to_qs_map_cmd->qs_group_id = grp_id;

	bp_to_qs_map_cmd->qs_bit_map = cpu_to_le32(bit_map);



	return hclge_cmd_send(&hdev->hw, &desc, 1);

}
@@ -1167,6 +1167,41 @@ static int hclge_pfc_setup_hw(struct hclge_dev *hdev) 
				      hdev->tm_info.hw_pfc_map);

}



/* Each Tc has a 1024 queue sets to backpress, it divides to

 * 32 group, each group contains 32 queue sets, which can be

 * represented by u32 bitmap.

 */

static int hclge_bp_setup_hw(struct hclge_dev *hdev, u8 tc)

{

	struct hclge_vport *vport = hdev->vport;

	u32 i, k, qs_bitmap;

	int ret;



	for (i = 0; i < HCLGE_BP_GRP_NUM; i++) {

		qs_bitmap = 0;



		for (k = 0; k < hdev->num_alloc_vport; k++) {

			u16 qs_id = vport->qs_offset + tc;

			u8 grp, sub_grp;



			grp = hnae_get_field(qs_id, HCLGE_BP_GRP_ID_M,

					     HCLGE_BP_GRP_ID_S);

			sub_grp = hnae_get_field(qs_id, HCLGE_BP_SUB_GRP_ID_M,

						 HCLGE_BP_SUB_GRP_ID_S);

			if (i == grp)

				qs_bitmap |= (1 << sub_grp);



			vport++;

		}



		ret = hclge_tm_qs_bp_cfg(hdev, tc, i, qs_bitmap);

		if (ret)

			return ret;

	}



	return 0;

}



static int hclge_mac_pause_setup_hw(struct hclge_dev *hdev)

{

	bool tx_en, rx_en;
@@ -1218,7 +1253,7 @@ int hclge_pause_setup_hw(struct hclge_dev *hdev) 
		dev_warn(&hdev->pdev->dev, "set pfc pause failed:%d\n", ret);



	for (i = 0; i < hdev->tm_info.num_tc; i++) {

		ret = hclge_tm_qs_bp_cfg(hdev, i);

		ret = hclge_bp_setup_hw(hdev, i);

		if (ret)

			return ret;

	}

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h

+5 −0
Original line number Diff line number Diff line
@@ -89,6 +89,11 @@ struct hclge_pg_shapping_cmd { 
	__le32 pg_shapping_para;

};



#define HCLGE_BP_GRP_NUM		32

#define HCLGE_BP_SUB_GRP_ID_S		0

#define HCLGE_BP_SUB_GRP_ID_M		GENMASK(4, 0)

#define HCLGE_BP_GRP_ID_S		5

#define HCLGE_BP_GRP_ID_M		GENMASK(9, 5)

struct hclge_bp_to_qs_map_cmd {

	u8 tc_id;

	u8 rsvd[2];