[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_dcbnl.c

/*
 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#include <linux/device.h>
#include <linux/netdevice.h>
#include "en.h"

#define MLX5E_MAX_PRIORITY 8

#define MLX5E_100MB (100000)
#define MLX5E_1GB   (1000000)

static int mlx5e_dcbnl_ieee_getets(struct net_device *netdev,
				   struct ieee_ets *ets)
{
	struct mlx5e_priv *priv = netdev_priv(netdev);

	if (!MLX5_CAP_GEN(priv->mdev, ets))
		return -ENOTSUPP;

	memcpy(ets, &priv->params.ets, sizeof(*ets));
	return 0;
}

enum {
	MLX5E_VENDOR_TC_GROUP_NUM = 7,
	MLX5E_ETS_TC_GROUP_NUM    = 0,
};

static void mlx5e_build_tc_group(struct ieee_ets *ets, u8 *tc_group, int max_tc)
{
	bool any_tc_mapped_to_ets = false;
	int strict_group;
	int i;

	for (i = 0; i <= max_tc; i++)
		if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS)
			any_tc_mapped_to_ets = true;

	strict_group = any_tc_mapped_to_ets ? 1 : 0;

	for (i = 0; i <= max_tc; i++) {
		switch (ets->tc_tsa[i]) {
		case IEEE_8021QAZ_TSA_VENDOR:
			tc_group[i] = MLX5E_VENDOR_TC_GROUP_NUM;
			break;
		case IEEE_8021QAZ_TSA_STRICT:
			tc_group[i] = strict_group++;
			break;
		case IEEE_8021QAZ_TSA_ETS:
			tc_group[i] = MLX5E_ETS_TC_GROUP_NUM;
			break;
		}
	}
}

static void mlx5e_build_tc_tx_bw(struct ieee_ets *ets, u8 *tc_tx_bw,
				 u8 *tc_group, int max_tc)
{
	int i;

	for (i = 0; i <= max_tc; i++) {
		switch (ets->tc_tsa[i]) {
		case IEEE_8021QAZ_TSA_VENDOR:
			tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
			break;
		case IEEE_8021QAZ_TSA_STRICT:
			tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
			break;
		case IEEE_8021QAZ_TSA_ETS:
			tc_tx_bw[i] = ets->tc_tx_bw[i];
			break;
		}
	}
}

int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets)
{
	struct mlx5_core_dev *mdev = priv->mdev;
	u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS];
	u8 tc_group[IEEE_8021QAZ_MAX_TCS];
	int max_tc = mlx5_max_tc(mdev);
	int err;

	if (!MLX5_CAP_GEN(mdev, ets))
		return -ENOTSUPP;

	mlx5e_build_tc_group(ets, tc_group, max_tc);
	mlx5e_build_tc_tx_bw(ets, tc_tx_bw, tc_group, max_tc);

	err = mlx5_set_port_prio_tc(mdev, ets->prio_tc);
	if (err)
		return err;

	err = mlx5_set_port_tc_group(mdev, tc_group);
	if (err)
		return err;

	return mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw);
}

static int mlx5e_dbcnl_validate_ets(struct net_device *netdev,
				    struct ieee_ets *ets)
{
	int bw_sum = 0;
	int i;

	/* Validate Priority */
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) {
			netdev_err(netdev,
				   "Failed to validate ETS: priority value greater than max(%d)\n",
				    MLX5E_MAX_PRIORITY);
			return -EINVAL;
		}
	}

	/* Validate Bandwidth Sum */
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) {
			if (!ets->tc_tx_bw[i]) {
				netdev_err(netdev,
					   "Failed to validate ETS: BW 0 is illegal\n");
				return -EINVAL;
			}

			bw_sum += ets->tc_tx_bw[i];
		}
	}

	if (bw_sum != 0 && bw_sum != 100) {
		netdev_err(netdev,
			   "Failed to validate ETS: BW sum is illegal\n");
		return -EINVAL;
	}
	return 0;
}

static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev,
				   struct ieee_ets *ets)
{
	struct mlx5e_priv *priv = netdev_priv(netdev);
	int err;

	err = mlx5e_dbcnl_validate_ets(netdev, ets);
	if (err)
		return err;

	err = mlx5e_dcbnl_ieee_setets_core(priv, ets);
	if (err)
		return err;

	memcpy(&priv->params.ets, ets, sizeof(*ets));
	priv->params.ets.ets_cap = mlx5_max_tc(priv->mdev) + 1;

	return 0;
}

static int mlx5e_dcbnl_ieee_getpfc(struct net_device *dev,
				   struct ieee_pfc *pfc)
{
	struct mlx5e_priv *priv = netdev_priv(dev);
	struct mlx5_core_dev *mdev = priv->mdev;
	struct mlx5e_pport_stats *pstats = &priv->stats.pport;
	int i;

	pfc->pfc_cap = mlx5_max_tc(mdev) + 1;
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		pfc->requests[i]    = PPORT_PER_PRIO_GET(pstats, i, tx_pause);
		pfc->indications[i] = PPORT_PER_PRIO_GET(pstats, i, rx_pause);
	}

	return mlx5_query_port_pfc(mdev, &pfc->pfc_en, NULL);
}

static int mlx5e_dcbnl_ieee_setpfc(struct net_device *dev,
				   struct ieee_pfc *pfc)
{
	struct mlx5e_priv *priv = netdev_priv(dev);
	struct mlx5_core_dev *mdev = priv->mdev;
	u8 curr_pfc_en;
	int ret;

	mlx5_query_port_pfc(mdev, &curr_pfc_en, NULL);

	if (pfc->pfc_en == curr_pfc_en)
		return 0;

	ret = mlx5_set_port_pfc(mdev, pfc->pfc_en, pfc->pfc_en);
	mlx5_toggle_port_link(mdev);

	return ret;
}

static u8 mlx5e_dcbnl_getdcbx(struct net_device *dev)
{
	return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
}

static u8 mlx5e_dcbnl_setdcbx(struct net_device *dev, u8 mode)
{
	if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
	    (mode & DCB_CAP_DCBX_VER_CEE) ||
	    !(mode & DCB_CAP_DCBX_VER_IEEE) ||
	    !(mode & DCB_CAP_DCBX_HOST))
		return 1;

	return 0;
}

static int mlx5e_dcbnl_ieee_getmaxrate(struct net_device *netdev,
				       struct ieee_maxrate *maxrate)
{
	struct mlx5e_priv *priv    = netdev_priv(netdev);
	struct mlx5_core_dev *mdev = priv->mdev;
	u8 max_bw_value[IEEE_8021QAZ_MAX_TCS];
	u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS];
	int err;
	int i;

	err = mlx5_query_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit);
	if (err)
		return err;

	memset(maxrate->tc_maxrate, 0, sizeof(maxrate->tc_maxrate));

	for (i = 0; i <= mlx5_max_tc(mdev); i++) {
		switch (max_bw_unit[i]) {
		case MLX5_100_MBPS_UNIT:
			maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_100MB;
			break;
		case MLX5_GBPS_UNIT:
			maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_1GB;
			break;
		case MLX5_BW_NO_LIMIT:
			break;
		default:
			WARN(true, "non-supported BW unit");
			break;
		}
	}

	return 0;
}

static int mlx5e_dcbnl_ieee_setmaxrate(struct net_device *netdev,
				       struct ieee_maxrate *maxrate)
{
	struct mlx5e_priv *priv    = netdev_priv(netdev);
	struct mlx5_core_dev *mdev = priv->mdev;
	u8 max_bw_value[IEEE_8021QAZ_MAX_TCS];
	u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS];
	__u64 upper_limit_mbps = roundup(255 * MLX5E_100MB, MLX5E_1GB);
	int i;

	memset(max_bw_value, 0, sizeof(max_bw_value));
	memset(max_bw_unit, 0, sizeof(max_bw_unit));

	for (i = 0; i <= mlx5_max_tc(mdev); i++) {
		if (!maxrate->tc_maxrate[i]) {
			max_bw_unit[i]  = MLX5_BW_NO_LIMIT;
			continue;
		}
		if (maxrate->tc_maxrate[i] < upper_limit_mbps) {
			max_bw_value[i] = div_u64(maxrate->tc_maxrate[i],
						  MLX5E_100MB);
			max_bw_value[i] = max_bw_value[i] ? max_bw_value[i] : 1;
			max_bw_unit[i]  = MLX5_100_MBPS_UNIT;
		} else {
			max_bw_value[i] = div_u64(maxrate->tc_maxrate[i],
						  MLX5E_1GB);
			max_bw_unit[i]  = MLX5_GBPS_UNIT;
		}
	}

	return mlx5_modify_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit);
}

const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
	.ieee_getets	= mlx5e_dcbnl_ieee_getets,
	.ieee_setets	= mlx5e_dcbnl_ieee_setets,
	.ieee_getmaxrate = mlx5e_dcbnl_ieee_getmaxrate,
	.ieee_setmaxrate = mlx5e_dcbnl_ieee_setmaxrate,
	.ieee_getpfc	= mlx5e_dcbnl_ieee_getpfc,
	.ieee_setpfc	= mlx5e_dcbnl_ieee_setpfc,
	.getdcbx	= mlx5e_dcbnl_getdcbx,
	.setdcbx	= mlx5e_dcbnl_setdcbx,
};
Commit	Line	Data
08fb1dac SM	1	/*
	2	* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32	#include <linux/device.h>
	33	#include <linux/netdevice.h>
	34	#include "en.h"
	35
	36	#define MLX5E_MAX_PRIORITY 8
	37
d8880795 TT	38	#define MLX5E_100MB (100000)
	39	#define MLX5E_1GB (1000000)
	40
08fb1dac SM	41	static int mlx5e_dcbnl_ieee_getets(struct net_device *netdev,
	42	struct ieee_ets *ets)
	43	{
	44	struct mlx5e_priv *priv = netdev_priv(netdev);
	45
	46	if (!MLX5_CAP_GEN(priv->mdev, ets))
	47	return -ENOTSUPP;
	48
	49	memcpy(ets, &priv->params.ets, sizeof(*ets));
	50	return 0;
	51	}
	52
	53	enum {
	54	MLX5E_VENDOR_TC_GROUP_NUM = 7,
	55	MLX5E_ETS_TC_GROUP_NUM = 0,
	56	};
	57
	58	static void mlx5e_build_tc_group(struct ieee_ets ets, u8 tc_group, int max_tc)
	59	{
	60	bool any_tc_mapped_to_ets = false;
	61	int strict_group;
	62	int i;
	63
	64	for (i = 0; i <= max_tc; i++)
	65	if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS)
	66	any_tc_mapped_to_ets = true;
	67
	68	strict_group = any_tc_mapped_to_ets ? 1 : 0;
	69
	70	for (i = 0; i <= max_tc; i++) {
	71	switch (ets->tc_tsa[i]) {
	72	case IEEE_8021QAZ_TSA_VENDOR:
	73	tc_group[i] = MLX5E_VENDOR_TC_GROUP_NUM;
	74	break;
	75	case IEEE_8021QAZ_TSA_STRICT:
	76	tc_group[i] = strict_group++;
	77	break;
	78	case IEEE_8021QAZ_TSA_ETS:
	79	tc_group[i] = MLX5E_ETS_TC_GROUP_NUM;
	80	break;
	81	}
	82	}
	83	}
	84
	85	static void mlx5e_build_tc_tx_bw(struct ieee_ets ets, u8 tc_tx_bw,
	86	u8 *tc_group, int max_tc)
	87	{
	88	int i;
	89
	90	for (i = 0; i <= max_tc; i++) {
	91	switch (ets->tc_tsa[i]) {
	92	case IEEE_8021QAZ_TSA_VENDOR:
	93	tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
	94	break;
	95	case IEEE_8021QAZ_TSA_STRICT:
	96	tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC;
	97	break;
	98	case IEEE_8021QAZ_TSA_ETS:
cdcf1121	99	tc_tx_bw[i] = ets->tc_tx_bw[i];
08fb1dac SM	100	break;
	101	}
	102	}
	103	}
	104
	105	int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv priv, struct ieee_ets ets)
	106	{
	107	struct mlx5_core_dev *mdev = priv->mdev;
	108	u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS];
	109	u8 tc_group[IEEE_8021QAZ_MAX_TCS];
	110	int max_tc = mlx5_max_tc(mdev);
	111	int err;
	112
	113	if (!MLX5_CAP_GEN(mdev, ets))
	114	return -ENOTSUPP;
	115
	116	mlx5e_build_tc_group(ets, tc_group, max_tc);
	117	mlx5e_build_tc_tx_bw(ets, tc_tx_bw, tc_group, max_tc);
	118
	119	err = mlx5_set_port_prio_tc(mdev, ets->prio_tc);
	120	if (err)
	121	return err;
	122
	123	err = mlx5_set_port_tc_group(mdev, tc_group);
	124	if (err)
	125	return err;
	126
	127	return mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw);
	128	}
	129
1722b969 EBE	130	static int mlx5e_dbcnl_validate_ets(struct net_device *netdev,
1722b969 EBE	131	struct ieee_ets *ets)
08fb1dac SM	132	{
	133	int bw_sum = 0;
	134	int i;
	135
	136	/* Validate Priority */
	137	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1722b969 EBE	138	if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) {
	139	netdev_err(netdev,
	140	"Failed to validate ETS: priority value greater than max(%d)\n",
	141	MLX5E_MAX_PRIORITY);
08fb1dac	142	return -EINVAL;
1722b969	143	}
08fb1dac SM	144	}
	145
	146	/* Validate Bandwidth Sum */
	147	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
cdcf1121	148	if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) {
1722b969 EBE	149	if (!ets->tc_tx_bw[i]) {
	150	netdev_err(netdev,
	151	"Failed to validate ETS: BW 0 is illegal\n");
cdcf1121	152	return -EINVAL;
1722b969	153	}
cdcf1121	154
08fb1dac	155	bw_sum += ets->tc_tx_bw[i];
cdcf1121	156	}
08fb1dac SM	157	}
08fb1dac SM	158
1722b969 EBE	159	if (bw_sum != 0 && bw_sum != 100) {
	160	netdev_err(netdev,
	161	"Failed to validate ETS: BW sum is illegal\n");
08fb1dac	162	return -EINVAL;
1722b969	163	}
08fb1dac SM	164	return 0;
	165	}
	166
	167	static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev,
	168	struct ieee_ets *ets)
	169	{
	170	struct mlx5e_priv *priv = netdev_priv(netdev);
	171	int err;
	172
1722b969	173	err = mlx5e_dbcnl_validate_ets(netdev, ets);
08fb1dac SM	174	if (err)
	175	return err;
	176
	177	err = mlx5e_dcbnl_ieee_setets_core(priv, ets);
	178	if (err)
	179	return err;
	180
	181	memcpy(&priv->params.ets, ets, sizeof(*ets));
	182	priv->params.ets.ets_cap = mlx5_max_tc(priv->mdev) + 1;
	183
	184	return 0;
	185	}
	186
ef918433 AS	187	static int mlx5e_dcbnl_ieee_getpfc(struct net_device *dev,
	188	struct ieee_pfc *pfc)
	189	{
	190	struct mlx5e_priv *priv = netdev_priv(dev);
	191	struct mlx5_core_dev *mdev = priv->mdev;
cf678570 GP	192	struct mlx5e_pport_stats *pstats = &priv->stats.pport;
cf678570 GP	193	int i;
ef918433 AS	194
ef918433 AS	195	pfc->pfc_cap = mlx5_max_tc(mdev) + 1;
cf678570 GP	196	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
	197	pfc->requests[i] = PPORT_PER_PRIO_GET(pstats, i, tx_pause);
	198	pfc->indications[i] = PPORT_PER_PRIO_GET(pstats, i, rx_pause);
	199	}
ef918433 AS	200
	201	return mlx5_query_port_pfc(mdev, &pfc->pfc_en, NULL);
	202	}
	203
	204	static int mlx5e_dcbnl_ieee_setpfc(struct net_device *dev,
	205	struct ieee_pfc *pfc)
	206	{
	207	struct mlx5e_priv *priv = netdev_priv(dev);
	208	struct mlx5_core_dev *mdev = priv->mdev;
ef918433 AS	209	u8 curr_pfc_en;
	210	int ret;
	211
	212	mlx5_query_port_pfc(mdev, &curr_pfc_en, NULL);
	213
	214	if (pfc->pfc_en == curr_pfc_en)
	215	return 0;
	216
ef918433	217	ret = mlx5_set_port_pfc(mdev, pfc->pfc_en, pfc->pfc_en);
667daeda	218	mlx5_toggle_port_link(mdev);
ef918433 AS	219
	220	return ret;
	221	}
	222
08fb1dac SM	223	static u8 mlx5e_dcbnl_getdcbx(struct net_device *dev)
	224	{
	225	return DCB_CAP_DCBX_HOST \| DCB_CAP_DCBX_VER_IEEE;
	226	}
	227
	228	static u8 mlx5e_dcbnl_setdcbx(struct net_device *dev, u8 mode)
	229	{
	230	if ((mode & DCB_CAP_DCBX_LLD_MANAGED) \|\|
	231	(mode & DCB_CAP_DCBX_VER_CEE) \|\|
	232	!(mode & DCB_CAP_DCBX_VER_IEEE) \|\|
	233	!(mode & DCB_CAP_DCBX_HOST))
	234	return 1;
	235
	236	return 0;
	237	}
	238
d8880795 TT	239	static int mlx5e_dcbnl_ieee_getmaxrate(struct net_device *netdev,
	240	struct ieee_maxrate *maxrate)
	241	{
	242	struct mlx5e_priv *priv = netdev_priv(netdev);
	243	struct mlx5_core_dev *mdev = priv->mdev;
	244	u8 max_bw_value[IEEE_8021QAZ_MAX_TCS];
	245	u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS];
	246	int err;
	247	int i;
	248
	249	err = mlx5_query_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit);
	250	if (err)
	251	return err;
	252
	253	memset(maxrate->tc_maxrate, 0, sizeof(maxrate->tc_maxrate));
	254
	255	for (i = 0; i <= mlx5_max_tc(mdev); i++) {
	256	switch (max_bw_unit[i]) {
	257	case MLX5_100_MBPS_UNIT:
	258	maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_100MB;
	259	break;
	260	case MLX5_GBPS_UNIT:
	261	maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_1GB;
	262	break;
	263	case MLX5_BW_NO_LIMIT:
	264	break;
	265	default:
	266	WARN(true, "non-supported BW unit");
	267	break;
	268	}
	269	}
	270
	271	return 0;
	272	}
	273
	274	static int mlx5e_dcbnl_ieee_setmaxrate(struct net_device *netdev,
	275	struct ieee_maxrate *maxrate)
	276	{
	277	struct mlx5e_priv *priv = netdev_priv(netdev);
	278	struct mlx5_core_dev *mdev = priv->mdev;
	279	u8 max_bw_value[IEEE_8021QAZ_MAX_TCS];
	280	u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS];
	281	__u64 upper_limit_mbps = roundup(255 * MLX5E_100MB, MLX5E_1GB);
	282	int i;
	283
	284	memset(max_bw_value, 0, sizeof(max_bw_value));
	285	memset(max_bw_unit, 0, sizeof(max_bw_unit));
	286
	287	for (i = 0; i <= mlx5_max_tc(mdev); i++) {
	288	if (!maxrate->tc_maxrate[i]) {
	289	max_bw_unit[i] = MLX5_BW_NO_LIMIT;
	290	continue;
	291	}
	292	if (maxrate->tc_maxrate[i] < upper_limit_mbps) {
	293	max_bw_value[i] = div_u64(maxrate->tc_maxrate[i],
	294	MLX5E_100MB);
	295	max_bw_value[i] = max_bw_value[i] ? max_bw_value[i] : 1;
	296	max_bw_unit[i] = MLX5_100_MBPS_UNIT;
	297	} else {
	298	max_bw_value[i] = div_u64(maxrate->tc_maxrate[i],
	299	MLX5E_1GB);
	300	max_bw_unit[i] = MLX5_GBPS_UNIT;
	301	}
	302	}
303
304	return mlx5_modify_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit);
305	}
306
08fb1dac SM	307	const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = {
	308	.ieee_getets = mlx5e_dcbnl_ieee_getets,
	309	.ieee_setets = mlx5e_dcbnl_ieee_setets,
d8880795 TT	310	.ieee_getmaxrate = mlx5e_dcbnl_ieee_getmaxrate,
d8880795 TT	311	.ieee_setmaxrate = mlx5e_dcbnl_ieee_setmaxrate,
ef918433 AS	312	.ieee_getpfc = mlx5e_dcbnl_ieee_getpfc,
ef918433 AS	313	.ieee_setpfc = mlx5e_dcbnl_ieee_setpfc,
08fb1dac SM	314	.getdcbx = mlx5e_dcbnl_getdcbx,
	315	.setdcbx = mlx5e_dcbnl_setdcbx,
	316	};