Commit 04595b55 authored by Peiyang Wang's avatar Peiyang Wang Committed by Jiantao Xiao
Browse files

net: hns3: support tc command with max rate parameter 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7YRUW


CVE: NA

----------------------------------------------------------------------

Traffic class is supposed to support limit rate. Configure different rates
for different tc. The followed tc command can be used.

tc qdisc add dev ethx root mqprio num_tc 4 map 0 1 2 3 0 1 2 3 queues 8@0
8@8 8@16 8@24 hw 1 mode channel shaper bw_rlimit max_rate 10mbps 10mbps
10mbps 10mbps

Signed-off-by: default avatarPeiyang Wang <wangpeiyang1@huawei.com>
parent 0b7ebb1c

drivers/net/ethernet/hisilicon/hns3/hnae3.h

+4 −0
Original line number Diff line number Diff line
@@ -72,6 +72,9 @@ 
#define HNAE3_DEV_SUPPORT_ROCE_DCB_BITS (BIT(HNAE3_DEV_SUPPORT_DCB_B) | \

		BIT(HNAE3_DEV_SUPPORT_ROCE_B))



#define hnae3_dev_roh_supported(hdev) \

	hnae3_get_bit((hdev)->ae_dev->flag, HNAE3_ROH_CLIENT_INITED_B)



#define hnae3_dev_roce_supported(hdev) \

	hnae3_get_bit((hdev)->ae_dev->flag, HNAE3_DEV_SUPPORT_ROCE_B)
@@ -834,6 +837,7 @@ struct hnae3_tc_info { 
	u8 num_tc; /* Total number of enabled TCs */

	bool mqprio_active;

	bool dcb_ets_active;

	u64 max_rate[HNAE3_MAX_TC];     /* Unit Bps */

};



#define HNAE3_MAX_DSCP			64

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

+37 −5
Original line number Diff line number Diff line
@@ -509,6 +509,36 @@ static u8 hclge_setdcbx(struct hnae3_handle *h, u8 mode) 
	return 0;

}



static int hclge_mqprio_qopt_check_rate(struct hclge_dev *hdev, u64 min_rate,

					u64 max_rate)

{

	u32 max_speed = hclge_tm_rate_2_port_rate(max_rate);



	if (min_rate) {

		dev_err(&hdev->pdev->dev, "unsupported min_rate, min_rate = %lluB/s\n",

			min_rate);

		return -EOPNOTSUPP;

	}



	if (!max_rate)

		return 0;



	if (hnae3_dev_roh_supported(hdev)) {

		if (max_rate < TM_RATE_PORT_RATE_SCALE ||

		    max_speed > hdev->hw.mac.max_speed) {

			dev_err(&hdev->pdev->dev,

				"invalid max_rate[%lluB/s]: the range is [1Mbps, %uMbps]\n",

				max_rate, hdev->hw.mac.max_speed);

			return -EINVAL;

		}

		return 0;

	}



	dev_err(&hdev->pdev->dev, "unsupported max_rate, max_rate = %lluB/s\n",

		max_rate);

	return -EOPNOTSUPP;

}



static int hclge_mqprio_qopt_check(struct hclge_dev *hdev,

				   struct tc_mqprio_qopt_offload *mqprio_qopt)

{
@@ -546,11 +576,11 @@ static int hclge_mqprio_qopt_check(struct hclge_dev *hdev, 
			return -EINVAL;

		}



		if (mqprio_qopt->min_rate[i] || mqprio_qopt->max_rate[i]) {

			dev_err(&hdev->pdev->dev,

				"qopt tx_rate is not supported\n");

			return -EOPNOTSUPP;

		}

		ret = hclge_mqprio_qopt_check_rate(hdev,

						   mqprio_qopt->min_rate[i],

						   mqprio_qopt->max_rate[i]);

		if (ret)

			return ret;



		queue_sum = mqprio_qopt->qopt.offset[i];

		queue_sum += mqprio_qopt->qopt.count[i];
@@ -576,6 +606,8 @@ static void hclge_sync_mqprio_qopt(struct hnae3_tc_info *tc_info, 
	       sizeof_field(struct hnae3_tc_info, tqp_count));

	memcpy(tc_info->tqp_offset, mqprio_qopt->qopt.offset,

	       sizeof_field(struct hnae3_tc_info, tqp_offset));

	memcpy(tc_info->max_rate, mqprio_qopt->max_rate,

	       sizeof_field(struct hnae3_tc_info, max_rate));

}



static int hclge_config_tc(struct hclge_dev *hdev,

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

+2 −0
Original line number Diff line number Diff line
@@ -362,6 +362,8 @@ struct hclge_cfg { 
	u16 umv_space;

};



#define TM_RATE_PORT_RATE_SCALE	125000



struct hclge_tm_info {

	u8 num_tc;

	u8 num_pg;      /* It must be 1 if vNET-Base schd */

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

+6 −0
Original line number Diff line number Diff line
@@ -1668,6 +1668,12 @@ void hclge_tm_schd_info_update(struct hclge_dev *hdev, u8 num_tc) 
	hclge_tm_schd_info_init(hdev);

}



u32 hclge_tm_rate_2_port_rate(u64 rate)

{

	do_div(rate, TM_RATE_PORT_RATE_SCALE);

	return rate > U32_MAX ? U32_MAX : (u32)rate;

}



int hclge_tm_init_hw(struct hclge_dev *hdev, bool init)

{

	int ret;

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

+1 −0
Original line number Diff line number Diff line
@@ -279,4 +279,5 @@ int hclge_tm_get_port_shaper(struct hclge_dev *hdev, 
int hclge_up_to_tc_map(struct hclge_dev *hdev);

int hclge_dscp_to_tc_map(struct hclge_dev *hdev);

int hclge_tm_flush_cfg(struct hclge_dev *hdev, bool enable);

u32 hclge_tm_rate_2_port_rate(u64 rate);

#endif