drivers/net/ethernet/microchip/lan966x/lan966x_dcb.c - third_party/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0+

 #include "lan966x_main.h"

 enum lan966x_dcb_apptrust_values {
 	LAN966X_DCB_APPTRUST_EMPTY,
 	LAN966X_DCB_APPTRUST_DSCP,
 	LAN966X_DCB_APPTRUST_PCP,
 	LAN966X_DCB_APPTRUST_DSCP_PCP,
 	__LAN966X_DCB_APPTRUST_MAX
 };

 static const struct lan966x_dcb_apptrust {
 	u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1];
 	int nselectors;
 } *lan966x_port_apptrust[NUM_PHYS_PORTS];

 static const char *lan966x_dcb_apptrust_names[__LAN966X_DCB_APPTRUST_MAX] = {
 	[LAN966X_DCB_APPTRUST_EMPTY]    = "empty",
 	[LAN966X_DCB_APPTRUST_DSCP]     = "dscp",
 	[LAN966X_DCB_APPTRUST_PCP]      = "pcp",
 	[LAN966X_DCB_APPTRUST_DSCP_PCP] = "dscp pcp"
 };

 /* Lan966x supported apptrust policies */
 static const struct lan966x_dcb_apptrust
 	lan966x_dcb_apptrust_policies[__LAN966X_DCB_APPTRUST_MAX] = {
 	/* Empty *must* be first */
 	[LAN966X_DCB_APPTRUST_EMPTY]    = { { 0 }, 0 },
 	[LAN966X_DCB_APPTRUST_DSCP]     = { { IEEE_8021QAZ_APP_SEL_DSCP }, 1 },
 	[LAN966X_DCB_APPTRUST_PCP]      = { { DCB_APP_SEL_PCP }, 1 },
 	[LAN966X_DCB_APPTRUST_DSCP_PCP] = { { IEEE_8021QAZ_APP_SEL_DSCP,
 					      DCB_APP_SEL_PCP }, 2 },
 };

 static bool lan966x_dcb_apptrust_contains(int portno, u8 selector)
 {
 	const struct lan966x_dcb_apptrust *conf = lan966x_port_apptrust[portno];

 	for (int i = 0; i < conf->nselectors; i++)
 		if (conf->selectors[i] == selector)
 			return true;

 	return false;
 }

 static void lan966x_dcb_app_update(struct net_device *dev)
 {
 	struct dcb_ieee_app_prio_map dscp_rewr_map = {0};
 	struct dcb_rewr_prio_pcp_map pcp_rewr_map = {0};
 	struct lan966x_port *port = netdev_priv(dev);
 	struct lan966x_port_qos qos = {0};
 	struct dcb_app app_itr;
 	bool dscp_rewr = false;
 	bool pcp_rewr = false;

 	/* Get pcp ingress mapping */
 	for (int i = 0; i < ARRAY_SIZE(qos.pcp.map); i++) {
 		app_itr.selector = DCB_APP_SEL_PCP;
 		app_itr.protocol = i;
 		qos.pcp.map[i] = dcb_getapp(dev, &app_itr);
 	}

 	/* Get dscp ingress mapping */
 	for (int i = 0; i < ARRAY_SIZE(qos.dscp.map); i++) {
 		app_itr.selector = IEEE_8021QAZ_APP_SEL_DSCP;
 		app_itr.protocol = i;
 		qos.dscp.map[i] = dcb_getapp(dev, &app_itr);
 	}

 	/* Get default prio */
 	qos.default_prio = dcb_ieee_getapp_default_prio_mask(dev);
 	if (qos.default_prio)
 		qos.default_prio = fls(qos.default_prio) - 1;

 	/* Get pcp rewrite mapping */
 	dcb_getrewr_prio_pcp_mask_map(dev, &pcp_rewr_map);
 	for (int i = 0; i < ARRAY_SIZE(pcp_rewr_map.map); i++) {
 		if (!pcp_rewr_map.map[i])
 			continue;

 		pcp_rewr = true;
 		qos.pcp_rewr.map[i] = fls(pcp_rewr_map.map[i]) - 1;
 	}

 	/* Get dscp rewrite mapping */
 	dcb_getrewr_prio_dscp_mask_map(dev, &dscp_rewr_map);
 	for (int i = 0; i < ARRAY_SIZE(dscp_rewr_map.map); i++) {
 		if (!dscp_rewr_map.map[i])
 			continue;

 		dscp_rewr = true;
 		qos.dscp_rewr.map[i] = fls64(dscp_rewr_map.map[i]) - 1;
 	}

 	/* Enable use of pcp for queue classification */
 	if (lan966x_dcb_apptrust_contains(port->chip_port, DCB_APP_SEL_PCP)) {
 		qos.pcp.enable = true;

 		if (pcp_rewr)
 			qos.pcp_rewr.enable = true;
 	}

 	/* Enable use of dscp for queue classification */
 	if (lan966x_dcb_apptrust_contains(port->chip_port, IEEE_8021QAZ_APP_SEL_DSCP)) {
 		qos.dscp.enable = true;

 		if (dscp_rewr)
 			qos.dscp_rewr.enable = true;
 	}

 	lan966x_port_qos_set(port, &qos);
 }

 /* DSCP mapping is global for all ports, so set and delete app entries are
  * replicated for each port.
  */
 static int lan966x_dcb_ieee_dscp_setdel(struct net_device *dev,
 					struct dcb_app *app,
 					int (*setdel)(struct net_device *,
 						      struct dcb_app *))
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	struct lan966x *lan966x = port->lan966x;
 	int err;

 	for (int i = 0; i < NUM_PHYS_PORTS; i++) {
 		port = lan966x->ports[i];
 		if (!port)
 			continue;

 		err = setdel(port->dev, app);
 		if (err)
 			return err;
 	}

 	return 0;
 }

 static int lan966x_dcb_app_validate(struct net_device *dev,
 				    const struct dcb_app *app)
 {
 	int err = 0;

 	switch (app->selector) {
 	/* Default priority checks */
 	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
 		if (app->protocol)
 			err = -EINVAL;
 		else if (app->priority >= NUM_PRIO_QUEUES)
 			err = -ERANGE;
 		break;
 	/* Dscp checks */
 	case IEEE_8021QAZ_APP_SEL_DSCP:
 		if (app->protocol >= LAN966X_PORT_QOS_DSCP_COUNT)
 			err = -EINVAL;
 		else if (app->priority >= NUM_PRIO_QUEUES)
 			err = -ERANGE;
 		break;
 	/* Pcp checks */
 	case DCB_APP_SEL_PCP:
 		if (app->protocol >= LAN966X_PORT_QOS_PCP_DEI_COUNT)
 			err = -EINVAL;
 		else if (app->priority >= NUM_PRIO_QUEUES)
 			err = -ERANGE;
 		break;
 	default:
 		err = -EINVAL;
 		break;
 	}

 	if (err)
 		netdev_err(dev, "Invalid entry: %d:%d\n", app->protocol,
 			   app->priority);

 	return err;
 }

 static int lan966x_dcb_ieee_delapp(struct net_device *dev, struct dcb_app *app)
 {
 	int err;

 	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
 		err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_delapp);
 	else
 		err = dcb_ieee_delapp(dev, app);

 	if (err)
 		return err;

 	lan966x_dcb_app_update(dev);

 	return 0;
 }

 static int lan966x_dcb_ieee_setapp(struct net_device *dev, struct dcb_app *app)
 {
 	struct dcb_app app_itr;
 	int err;
 	u8 prio;

 	err = lan966x_dcb_app_validate(dev, app);
 	if (err)
 		return err;

 	/* Delete current mapping, if it exists */
 	prio = dcb_getapp(dev, app);
 	if (prio) {
 		app_itr = *app;
 		app_itr.priority = prio;
 		lan966x_dcb_ieee_delapp(dev, &app_itr);
 	}

 	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
 		err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_setapp);
 	else
 		err = dcb_ieee_setapp(dev, app);

 	if (err)
 		return err;

 	lan966x_dcb_app_update(dev);

 	return 0;
 }

 static int lan966x_dcb_apptrust_validate(struct net_device *dev,
 					 u8 *selectors,
 					 int nselectors)
 {
 	for (int i = 0; i < ARRAY_SIZE(lan966x_dcb_apptrust_policies); i++) {
 		bool match;

 		if (lan966x_dcb_apptrust_policies[i].nselectors != nselectors)
 			continue;

 		match = true;
 		for (int j = 0; j < nselectors; j++) {
 			if (lan966x_dcb_apptrust_policies[i].selectors[j] !=
 			    *(selectors + j)) {
 				match = false;
 				break;
 			}
 		}
 		if (match)
 			return i;
 	}

 	netdev_err(dev, "Valid apptrust configurations are:\n");
 	for (int i = 0; i < ARRAY_SIZE(lan966x_dcb_apptrust_names); i++)
 		pr_info("order: %s\n", lan966x_dcb_apptrust_names[i]);

 	return -EOPNOTSUPP;
 }

 static int lan966x_dcb_setapptrust(struct net_device *dev,
 				   u8 *selectors,
 				   int nselectors)
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	int idx;

 	idx = lan966x_dcb_apptrust_validate(dev, selectors, nselectors);
 	if (idx < 0)
 		return idx;

 	lan966x_port_apptrust[port->chip_port] = &lan966x_dcb_apptrust_policies[idx];
 	lan966x_dcb_app_update(dev);

 	return 0;
 }

 static int lan966x_dcb_getapptrust(struct net_device *dev, u8 *selectors,
 				   int *nselectors)
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	const struct lan966x_dcb_apptrust *trust;

 	trust = lan966x_port_apptrust[port->chip_port];

 	memcpy(selectors, trust->selectors, trust->nselectors);
 	*nselectors = trust->nselectors;

 	return 0;
 }

 static int lan966x_dcb_delrewr(struct net_device *dev, struct dcb_app *app)
 {
 	int err;

 	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
 		err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_delrewr);
 	else
 		err = dcb_delrewr(dev, app);

 	if (err < 0)
 		return err;

 	lan966x_dcb_app_update(dev);

 	return 0;
 }

 static int lan966x_dcb_setrewr(struct net_device *dev, struct dcb_app *app)
 {
 	struct dcb_app app_itr;
 	u16 proto;
 	int err;

 	err = lan966x_dcb_app_validate(dev, app);
 	if (err)
 		goto out;

 	/* Delete current mapping, if it exists. */
 	proto = dcb_getrewr(dev, app);
 	if (proto) {
 		app_itr = *app;
 		app_itr.protocol = proto;
 		lan966x_dcb_delrewr(dev, &app_itr);
 	}

 	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
 		err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_setrewr);
 	else
 		err = dcb_setrewr(dev, app);

 	if (err)
 		goto out;

 	lan966x_dcb_app_update(dev);

 out:
 	return err;
 }

 static const struct dcbnl_rtnl_ops lan966x_dcbnl_ops = {
 	.ieee_setapp = lan966x_dcb_ieee_setapp,
 	.ieee_delapp = lan966x_dcb_ieee_delapp,
 	.dcbnl_setapptrust = lan966x_dcb_setapptrust,
 	.dcbnl_getapptrust = lan966x_dcb_getapptrust,
 	.dcbnl_setrewr = lan966x_dcb_setrewr,
 	.dcbnl_delrewr = lan966x_dcb_delrewr,
 };

 void lan966x_dcb_init(struct lan966x *lan966x)
 {
 	for (int p = 0; p < lan966x->num_phys_ports; ++p) {
 		struct lan966x_port *port;

 		port = lan966x->ports[p];
 		if (!port)
 			continue;

 		port->dev->dcbnl_ops = &lan966x_dcbnl_ops;

 		lan966x_port_apptrust[port->chip_port] =
 			&lan966x_dcb_apptrust_policies[LAN966X_DCB_APPTRUST_DSCP_PCP];

 		/* Enable DSCP classification based on classified QoS class and
 		 * DP, for all DSCP values, for all ports.
 		 */
 		lan966x_port_qos_dscp_rewr_mode_set(port,
 						    LAN966X_PORT_QOS_REWR_DSCP_ALL);
 	}
 }
	// SPDX-License-Identifier: GPL-2.0+

	#include "lan966x_main.h"

	enum lan966x_dcb_apptrust_values {
	LAN966X_DCB_APPTRUST_EMPTY,
	LAN966X_DCB_APPTRUST_DSCP,
	LAN966X_DCB_APPTRUST_PCP,
	LAN966X_DCB_APPTRUST_DSCP_PCP,
	__LAN966X_DCB_APPTRUST_MAX
	};

	static const struct lan966x_dcb_apptrust {
	u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1];
	int nselectors;
	} *lan966x_port_apptrust[NUM_PHYS_PORTS];

	static const char *lan966x_dcb_apptrust_names[__LAN966X_DCB_APPTRUST_MAX] = {
	[LAN966X_DCB_APPTRUST_EMPTY] = "empty",
	[LAN966X_DCB_APPTRUST_DSCP] = "dscp",
	[LAN966X_DCB_APPTRUST_PCP] = "pcp",
	[LAN966X_DCB_APPTRUST_DSCP_PCP] = "dscp pcp"
	};

	/* Lan966x supported apptrust policies */
	static const struct lan966x_dcb_apptrust
	lan966x_dcb_apptrust_policies[__LAN966X_DCB_APPTRUST_MAX] = {
	/* Empty must be first */
	[LAN966X_DCB_APPTRUST_EMPTY] = { { 0 }, 0 },
	[LAN966X_DCB_APPTRUST_DSCP] = { { IEEE_8021QAZ_APP_SEL_DSCP }, 1 },
	[LAN966X_DCB_APPTRUST_PCP] = { { DCB_APP_SEL_PCP }, 1 },
	[LAN966X_DCB_APPTRUST_DSCP_PCP] = { { IEEE_8021QAZ_APP_SEL_DSCP,
	DCB_APP_SEL_PCP }, 2 },
	};

	static bool lan966x_dcb_apptrust_contains(int portno, u8 selector)
	{
	const struct lan966x_dcb_apptrust *conf = lan966x_port_apptrust[portno];

	for (int i = 0; i < conf->nselectors; i++)
	if (conf->selectors[i] == selector)
	return true;

	return false;
	}

	static void lan966x_dcb_app_update(struct net_device *dev)
	{
	struct dcb_ieee_app_prio_map dscp_rewr_map = {0};
	struct dcb_rewr_prio_pcp_map pcp_rewr_map = {0};
	struct lan966x_port *port = netdev_priv(dev);
	struct lan966x_port_qos qos = {0};
	struct dcb_app app_itr;
	bool dscp_rewr = false;
	bool pcp_rewr = false;

	/* Get pcp ingress mapping */
	for (int i = 0; i < ARRAY_SIZE(qos.pcp.map); i++) {
	app_itr.selector = DCB_APP_SEL_PCP;
	app_itr.protocol = i;
	qos.pcp.map[i] = dcb_getapp(dev, &app_itr);
	}

	/* Get dscp ingress mapping */
	for (int i = 0; i < ARRAY_SIZE(qos.dscp.map); i++) {
	app_itr.selector = IEEE_8021QAZ_APP_SEL_DSCP;
	app_itr.protocol = i;
	qos.dscp.map[i] = dcb_getapp(dev, &app_itr);
	}

	/* Get default prio */
	qos.default_prio = dcb_ieee_getapp_default_prio_mask(dev);
	if (qos.default_prio)
	qos.default_prio = fls(qos.default_prio) - 1;

	/* Get pcp rewrite mapping */
	dcb_getrewr_prio_pcp_mask_map(dev, &pcp_rewr_map);
	for (int i = 0; i < ARRAY_SIZE(pcp_rewr_map.map); i++) {
	if (!pcp_rewr_map.map[i])
	continue;

	pcp_rewr = true;
	qos.pcp_rewr.map[i] = fls(pcp_rewr_map.map[i]) - 1;
	}

	/* Get dscp rewrite mapping */
	dcb_getrewr_prio_dscp_mask_map(dev, &dscp_rewr_map);
	for (int i = 0; i < ARRAY_SIZE(dscp_rewr_map.map); i++) {
	if (!dscp_rewr_map.map[i])
	continue;

	dscp_rewr = true;
	qos.dscp_rewr.map[i] = fls64(dscp_rewr_map.map[i]) - 1;
	}

	/* Enable use of pcp for queue classification */
	if (lan966x_dcb_apptrust_contains(port->chip_port, DCB_APP_SEL_PCP)) {
	qos.pcp.enable = true;

	if (pcp_rewr)
	qos.pcp_rewr.enable = true;
	}

	/* Enable use of dscp for queue classification */
	if (lan966x_dcb_apptrust_contains(port->chip_port, IEEE_8021QAZ_APP_SEL_DSCP)) {
	qos.dscp.enable = true;

	if (dscp_rewr)
	qos.dscp_rewr.enable = true;
	}

	lan966x_port_qos_set(port, &qos);
	}

	/* DSCP mapping is global for all ports, so set and delete app entries are
	* replicated for each port.
	*/
	static int lan966x_dcb_ieee_dscp_setdel(struct net_device *dev,
	struct dcb_app *app,
	int (setdel)(struct net_device ,
	struct dcb_app *))
	{
	struct lan966x_port *port = netdev_priv(dev);
	struct lan966x *lan966x = port->lan966x;
	int err;

	for (int i = 0; i < NUM_PHYS_PORTS; i++) {
	port = lan966x->ports[i];
	if (!port)
	continue;

	err = setdel(port->dev, app);
	if (err)
	return err;
	}

	return 0;
	}

	static int lan966x_dcb_app_validate(struct net_device *dev,
	const struct dcb_app *app)
	{
	int err = 0;

	switch (app->selector) {
	/* Default priority checks */
	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
	if (app->protocol)
	err = -EINVAL;
	else if (app->priority >= NUM_PRIO_QUEUES)
	err = -ERANGE;
	break;
	/* Dscp checks */
	case IEEE_8021QAZ_APP_SEL_DSCP:
	if (app->protocol >= LAN966X_PORT_QOS_DSCP_COUNT)
	err = -EINVAL;
	else if (app->priority >= NUM_PRIO_QUEUES)
	err = -ERANGE;
	break;
	/* Pcp checks */
	case DCB_APP_SEL_PCP:
	if (app->protocol >= LAN966X_PORT_QOS_PCP_DEI_COUNT)
	err = -EINVAL;
	else if (app->priority >= NUM_PRIO_QUEUES)
	err = -ERANGE;
	break;
	default:
	err = -EINVAL;
	break;
	}

	if (err)
	netdev_err(dev, "Invalid entry: %d:%d\n", app->protocol,
	app->priority);

	return err;
	}

	static int lan966x_dcb_ieee_delapp(struct net_device dev, struct dcb_app app)
	{
	int err;

	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
	err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_delapp);
	else
	err = dcb_ieee_delapp(dev, app);

	if (err)
	return err;

	lan966x_dcb_app_update(dev);

	return 0;
	}

	static int lan966x_dcb_ieee_setapp(struct net_device dev, struct dcb_app app)
	{
	struct dcb_app app_itr;
	int err;
	u8 prio;

	err = lan966x_dcb_app_validate(dev, app);
	if (err)
	return err;

	/* Delete current mapping, if it exists */
	prio = dcb_getapp(dev, app);
	if (prio) {
	app_itr = *app;
	app_itr.priority = prio;
	lan966x_dcb_ieee_delapp(dev, &app_itr);
	}

	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
	err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_setapp);
	else
	err = dcb_ieee_setapp(dev, app);

	if (err)
	return err;

	lan966x_dcb_app_update(dev);

	return 0;
	}

	static int lan966x_dcb_apptrust_validate(struct net_device *dev,
	u8 *selectors,
	int nselectors)
	{
	for (int i = 0; i < ARRAY_SIZE(lan966x_dcb_apptrust_policies); i++) {
	bool match;

	if (lan966x_dcb_apptrust_policies[i].nselectors != nselectors)
	continue;

	match = true;
	for (int j = 0; j < nselectors; j++) {
	if (lan966x_dcb_apptrust_policies[i].selectors[j] !=
	*(selectors + j)) {
	match = false;
	break;
	}
	}
	if (match)
	return i;
	}

	netdev_err(dev, "Valid apptrust configurations are:\n");
	for (int i = 0; i < ARRAY_SIZE(lan966x_dcb_apptrust_names); i++)
	pr_info("order: %s\n", lan966x_dcb_apptrust_names[i]);

	return -EOPNOTSUPP;
	}

	static int lan966x_dcb_setapptrust(struct net_device *dev,
	u8 *selectors,
	int nselectors)
	{
	struct lan966x_port *port = netdev_priv(dev);
	int idx;

	idx = lan966x_dcb_apptrust_validate(dev, selectors, nselectors);
	if (idx < 0)
	return idx;

	lan966x_port_apptrust[port->chip_port] = &lan966x_dcb_apptrust_policies[idx];
	lan966x_dcb_app_update(dev);

	return 0;
	}

	static int lan966x_dcb_getapptrust(struct net_device dev, u8 selectors,
	int *nselectors)
	{
	struct lan966x_port *port = netdev_priv(dev);
	const struct lan966x_dcb_apptrust *trust;

	trust = lan966x_port_apptrust[port->chip_port];

	memcpy(selectors, trust->selectors, trust->nselectors);
	*nselectors = trust->nselectors;

	return 0;
	}

	static int lan966x_dcb_delrewr(struct net_device dev, struct dcb_app app)
	{
	int err;

	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
	err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_delrewr);
	else
	err = dcb_delrewr(dev, app);

	if (err < 0)
	return err;

	lan966x_dcb_app_update(dev);

	return 0;
	}

	static int lan966x_dcb_setrewr(struct net_device dev, struct dcb_app app)
	{
	struct dcb_app app_itr;
	u16 proto;
	int err;

	err = lan966x_dcb_app_validate(dev, app);
	if (err)
	goto out;

	/* Delete current mapping, if it exists. */
	proto = dcb_getrewr(dev, app);
	if (proto) {
	app_itr = *app;
	app_itr.protocol = proto;
	lan966x_dcb_delrewr(dev, &app_itr);
	}

	if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
	err = lan966x_dcb_ieee_dscp_setdel(dev, app, dcb_setrewr);
	else
	err = dcb_setrewr(dev, app);

	if (err)
	goto out;

	lan966x_dcb_app_update(dev);

	out:
	return err;
	}

	static const struct dcbnl_rtnl_ops lan966x_dcbnl_ops = {
	.ieee_setapp = lan966x_dcb_ieee_setapp,
	.ieee_delapp = lan966x_dcb_ieee_delapp,
	.dcbnl_setapptrust = lan966x_dcb_setapptrust,
	.dcbnl_getapptrust = lan966x_dcb_getapptrust,
	.dcbnl_setrewr = lan966x_dcb_setrewr,
	.dcbnl_delrewr = lan966x_dcb_delrewr,
	};

	void lan966x_dcb_init(struct lan966x *lan966x)
	{
	for (int p = 0; p < lan966x->num_phys_ports; ++p) {
	struct lan966x_port *port;

	port = lan966x->ports[p];
	if (!port)
	continue;

	port->dev->dcbnl_ops = &lan966x_dcbnl_ops;

	lan966x_port_apptrust[port->chip_port] =
	&lan966x_dcb_apptrust_policies[LAN966X_DCB_APPTRUST_DSCP_PCP];

	/* Enable DSCP classification based on classified QoS class and
	* DP, for all DSCP values, for all ports.
	*/
	lan966x_port_qos_dscp_rewr_mode_set(port,
	LAN966X_PORT_QOS_REWR_DSCP_ALL);
	}
	}