Merge branch 'mirroring-for-ocelot-switches'

Vladimir Oltean says:

====================
Mirroring for Ocelot switches

This series adds support for tc-matchall (port-based) and tc-flower
(flow-based) offloading of the tc-mirred action. Support has been added
for both the ocelot switchdev driver and felix DSA driver.
====================

Link: https://lore.kernel.org/r/20220316204144.2679277-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/b53/b53_common.c

@@ -2110,7 +2110,8 @@ enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
 EXPORT_SYMBOL(b53_get_tag_protocol);
 
 int b53_mirror_add(struct dsa_switch *ds, int port,
-		   struct dsa_mall_mirror_tc_entry *mirror, bool ingress)
+		   struct dsa_mall_mirror_tc_entry *mirror, bool ingress,
+		   struct netlink_ext_ack *extack)
 {
 	struct b53_device *dev = ds->priv;
 	u16 reg, loc;

drivers/net/dsa/b53/b53_priv.h

@@ -373,7 +373,8 @@ int b53_mdb_del(struct dsa_switch *ds, int port,
 		const struct switchdev_obj_port_mdb *mdb,
 		struct dsa_db db);
 int b53_mirror_add(struct dsa_switch *ds, int port,
-		   struct dsa_mall_mirror_tc_entry *mirror, bool ingress);
+		   struct dsa_mall_mirror_tc_entry *mirror, bool ingress,
+		   struct netlink_ext_ack *extack);
 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
 					   enum dsa_tag_protocol mprot);
 void b53_mirror_del(struct dsa_switch *ds, int port,

drivers/net/dsa/microchip/ksz8795.c

@@ -1233,7 +1233,7 @@ static int ksz8_port_vlan_del(struct dsa_switch *ds, int port,
 
 static int ksz8_port_mirror_add(struct dsa_switch *ds, int port,
 				struct dsa_mall_mirror_tc_entry *mirror,
-				bool ingress)
+				bool ingress, struct netlink_ext_ack *extack)
 {
 	struct ksz_device *dev = ds->priv;
 

drivers/net/dsa/microchip/ksz9477.c

@@ -1018,7 +1018,7 @@ static int ksz9477_port_mdb_del(struct dsa_switch *ds, int port,
 
 static int ksz9477_port_mirror_add(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror,
-				   bool ingress)
+				   bool ingress, struct netlink_ext_ack *extack)
 {
 	struct ksz_device *dev = ds->priv;
 

drivers/net/dsa/mt7530.c

@@ -1714,7 +1714,7 @@ static int mt753x_mirror_port_set(unsigned int id, u32 val)
 
 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
 				  struct dsa_mall_mirror_tc_entry *mirror,
-				  bool ingress)
+				  bool ingress, struct netlink_ext_ack *extack)
 {
 	struct mt7530_priv *priv = ds->priv;
 	int monitor_port;

drivers/net/dsa/mv88e6xxx/chip.c

@@ -6321,7 +6321,8 @@ static int mv88e6xxx_port_mdb_del(struct dsa_switch *ds, int port,
 
 static int mv88e6xxx_port_mirror_add(struct dsa_switch *ds, int port,
 				     struct dsa_mall_mirror_tc_entry *mirror,
-				     bool ingress)
+				     bool ingress,
+				     struct netlink_ext_ack *extack)
 {
 	enum mv88e6xxx_egress_direction direction = ingress ?
 						MV88E6XXX_EGRESS_DIR_INGRESS :

drivers/net/dsa/ocelot/felix.c

@@ -1650,6 +1650,24 @@ static void felix_port_policer_del(struct dsa_switch *ds, int port)
 	ocelot_port_policer_del(ocelot, port);
 }
 
+static int felix_port_mirror_add(struct dsa_switch *ds, int port,
+				 struct dsa_mall_mirror_tc_entry *mirror,
+				 bool ingress, struct netlink_ext_ack *extack)
+{
+	struct ocelot *ocelot = ds->priv;
+
+	return ocelot_port_mirror_add(ocelot, port, mirror->to_local_port,
+				      ingress, extack);
+}
+
+static void felix_port_mirror_del(struct dsa_switch *ds, int port,
+				  struct dsa_mall_mirror_tc_entry *mirror)
+{
+	struct ocelot *ocelot = ds->priv;
+
+	ocelot_port_mirror_del(ocelot, port, mirror->ingress);
+}
+
 static int felix_port_setup_tc(struct dsa_switch *ds, int port,
 			       enum tc_setup_type type,
 			       void *type_data)
@@ -1880,6 +1898,8 @@ const struct dsa_switch_ops felix_switch_ops = {
 	.port_max_mtu			= felix_get_max_mtu,
 	.port_policer_add		= felix_port_policer_add,
 	.port_policer_del		= felix_port_policer_del,
+	.port_mirror_add		= felix_port_mirror_add,
+	.port_mirror_del		= felix_port_mirror_del,
 	.cls_flower_add			= felix_cls_flower_add,
 	.cls_flower_del			= felix_cls_flower_del,
 	.cls_flower_stats		= felix_cls_flower_stats,

drivers/net/dsa/qca8k.c

@@ -2473,7 +2473,7 @@ qca8k_port_mdb_del(struct dsa_switch *ds, int port,
 static int
 qca8k_port_mirror_add(struct dsa_switch *ds, int port,
 		      struct dsa_mall_mirror_tc_entry *mirror,
-		      bool ingress)
+		      bool ingress, struct netlink_ext_ack *extack)
 {
 	struct qca8k_priv *priv = ds->priv;
 	int monitor_port, ret;

drivers/net/dsa/sja1105/sja1105_main.c

@@ -2847,7 +2847,7 @@ static int sja1105_mirror_apply(struct sja1105_private *priv, int from, int to,
 
 static int sja1105_mirror_add(struct dsa_switch *ds, int port,
 			      struct dsa_mall_mirror_tc_entry *mirror,
-			      bool ingress)
+			      bool ingress, struct netlink_ext_ack *extack)
 {
 	return sja1105_mirror_apply(ds->priv, port, mirror->to_local_port,
 				    ingress, true);

drivers/net/ethernet/mscc/ocelot.c

@@ -3023,6 +3023,82 @@ int ocelot_port_del_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio)
 }
 EXPORT_SYMBOL_GPL(ocelot_port_del_dscp_prio);
 
+struct ocelot_mirror *ocelot_mirror_get(struct ocelot *ocelot, int to,
+					struct netlink_ext_ack *extack)
+{
+	struct ocelot_mirror *m = ocelot->mirror;
+
+	if (m) {
+		if (m->to != to) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Mirroring already configured towards different egress port");
+			return ERR_PTR(-EBUSY);
+		}
+
+		refcount_inc(&m->refcount);
+		return m;
+	}
+
+	m = kzalloc(sizeof(*m), GFP_KERNEL);
+	if (!m)
+		return ERR_PTR(-ENOMEM);
+
+	m->to = to;
+	refcount_set(&m->refcount, 1);
+	ocelot->mirror = m;
+
+	/* Program the mirror port to hardware */
+	ocelot_write(ocelot, BIT(to), ANA_MIRRORPORTS);
+
+	return m;
+}
+
+void ocelot_mirror_put(struct ocelot *ocelot)
+{
+	struct ocelot_mirror *m = ocelot->mirror;
+
+	if (!refcount_dec_and_test(&m->refcount))
+		return;
+
+	ocelot_write(ocelot, 0, ANA_MIRRORPORTS);
+	ocelot->mirror = NULL;
+	kfree(m);
+}
+
+int ocelot_port_mirror_add(struct ocelot *ocelot, int from, int to,
+			   bool ingress, struct netlink_ext_ack *extack)
+{
+	struct ocelot_mirror *m = ocelot_mirror_get(ocelot, to, extack);
+
+	if (IS_ERR(m))
+		return PTR_ERR(m);
+
+	if (ingress) {
+		ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
+			       ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
+			       ANA_PORT_PORT_CFG, from);
+	} else {
+		ocelot_rmw(ocelot, BIT(from), BIT(from),
+			   ANA_EMIRRORPORTS);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ocelot_port_mirror_add);
+
+void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress)
+{
+	if (ingress) {
+		ocelot_rmw_gix(ocelot, 0, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
+			       ANA_PORT_PORT_CFG, from);
+	} else {
+		ocelot_rmw(ocelot, 0, BIT(from), ANA_EMIRRORPORTS);
+	}
+
+	ocelot_mirror_put(ocelot);
+}
+EXPORT_SYMBOL_GPL(ocelot_port_mirror_del);
+
 void ocelot_init_port(struct ocelot *ocelot, int port)
 {
 	struct ocelot_port *ocelot_port = ocelot->ports[port];

drivers/net/ethernet/mscc/ocelot.h

@@ -38,7 +38,8 @@
 struct ocelot_port_tc {
 	bool block_shared;
 	unsigned long offload_cnt;
-
+	unsigned long ingress_mirred_id;
+	unsigned long egress_mirred_id;
 	unsigned long police_id;
 };
 
@@ -111,6 +112,10 @@ int ocelot_trap_add(struct ocelot *ocelot, int port,
 		    void (*populate)(struct ocelot_vcap_filter *f));
 int ocelot_trap_del(struct ocelot *ocelot, int port, unsigned long cookie);
 
+struct ocelot_mirror *ocelot_mirror_get(struct ocelot *ocelot, int to,
+					struct netlink_ext_ack *extack);
+void ocelot_mirror_put(struct ocelot *ocelot);
+
 extern struct notifier_block ocelot_netdevice_nb;
 extern struct notifier_block ocelot_switchdev_nb;
 extern struct notifier_block ocelot_switchdev_blocking_nb;

drivers/net/ethernet/mscc/ocelot_flower.c

@@ -359,6 +359,27 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 			filter->action.port_mask = BIT(egress_port);
 			filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
 			break;
+		case FLOW_ACTION_MIRRED:
+			if (filter->block_id != VCAP_IS2) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "Mirror action can only be offloaded to VCAP IS2");
+				return -EOPNOTSUPP;
+			}
+			if (filter->goto_target != -1) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "Last action must be GOTO");
+				return -EOPNOTSUPP;
+			}
+			egress_port = ocelot->ops->netdev_to_port(a->dev);
+			if (egress_port < 0) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "Destination not an ocelot port");
+				return -EOPNOTSUPP;
+			}
+			filter->egress_port.value = egress_port;
+			filter->action.mirror_ena = true;
+			filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
+			break;
 		case FLOW_ACTION_VLAN_POP:
 			if (filter->block_id != VCAP_IS1) {
 				NL_SET_ERR_MSG_MOD(extack,

drivers/net/ethernet/mscc/ocelot_net.c

@@ -20,6 +20,8 @@
 
 #define OCELOT_MAC_QUIRKS	OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP
 
+static bool ocelot_netdevice_dev_check(const struct net_device *dev);
+
 static struct ocelot *devlink_port_to_ocelot(struct devlink_port *dlp)
 {
 	return devlink_priv(dlp->devlink);
@@ -216,14 +218,14 @@ int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
 	}
 }
 
-static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
-					struct tc_cls_matchall_offload *f,
-					bool ingress)
+static int ocelot_setup_tc_cls_matchall_police(struct ocelot_port_private *priv,
+					       struct tc_cls_matchall_offload *f,
+					       bool ingress,
+					       struct netlink_ext_ack *extack)
 {
-	struct netlink_ext_ack *extack = f->common.extack;
+	struct flow_action_entry *action = &f->rule->action.entries[0];
 	struct ocelot *ocelot = priv->port.ocelot;
 	struct ocelot_policer pol = { 0 };
-	struct flow_action_entry *action;
 	int port = priv->chip_port;
 	int err;
 
@@ -232,6 +234,119 @@ static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
 		return -EOPNOTSUPP;
 	}
 
+	if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Only one policer per port is supported");
+		return -EEXIST;
+	}
+
+	err = ocelot_policer_validate(&f->rule->action, action, extack);
+	if (err)
+		return err;
+
+	pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
+	pol.burst = action->police.burst;
+
+	err = ocelot_port_policer_add(ocelot, port, &pol);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
+		return err;
+	}
+
+	priv->tc.police_id = f->cookie;
+	priv->tc.offload_cnt++;
+
+	return 0;
+}
+
+static int ocelot_setup_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
+					       struct tc_cls_matchall_offload *f,
+					       bool ingress,
+					       struct netlink_ext_ack *extack)
+{
+	struct flow_action *action = &f->rule->action;
+	struct ocelot *ocelot = priv->port.ocelot;
+	struct ocelot_port_private *other_priv;
+	const struct flow_action_entry *a;
+	int err;
+
+	if (f->common.protocol != htons(ETH_P_ALL))
+		return -EOPNOTSUPP;
+
+	if (!flow_action_basic_hw_stats_check(action, extack))
+		return -EOPNOTSUPP;
+
+	a = &action->entries[0];
+	if (!a->dev)
+		return -EINVAL;
+
+	if (!ocelot_netdevice_dev_check(a->dev)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Destination not an ocelot port");
+		return -EOPNOTSUPP;
+	}
+
+	other_priv = netdev_priv(a->dev);
+
+	err = ocelot_port_mirror_add(ocelot, priv->chip_port,
+				     other_priv->chip_port, ingress, extack);
+	if (err)
+		return err;
+
+	if (ingress)
+		priv->tc.ingress_mirred_id = f->cookie;
+	else
+		priv->tc.egress_mirred_id = f->cookie;
+	priv->tc.offload_cnt++;
+
+	return 0;
+}
+
+static int ocelot_del_tc_cls_matchall_police(struct ocelot_port_private *priv,
+					     struct netlink_ext_ack *extack)
+{
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+	int err;
+
+	err = ocelot_port_policer_del(ocelot, port);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Could not delete policer");
+		return err;
+	}
+
+	priv->tc.police_id = 0;
+	priv->tc.offload_cnt--;
+
+	return 0;
+}
+
+static int ocelot_del_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
+					     bool ingress,
+					     struct netlink_ext_ack *extack)
+{
+	struct ocelot *ocelot = priv->port.ocelot;
+	int port = priv->chip_port;
+
+	ocelot_port_mirror_del(ocelot, port, ingress);
+
+	if (ingress)
+		priv->tc.ingress_mirred_id = 0;
+	else
+		priv->tc.egress_mirred_id = 0;
+	priv->tc.offload_cnt--;
+
+	return 0;
+}
+
+static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
+					struct tc_cls_matchall_offload *f,
+					bool ingress)
+{
+	struct netlink_ext_ack *extack = f->common.extack;
+	struct flow_action_entry *action;
+
 	switch (f->command) {
 	case TC_CLSMATCHALL_REPLACE:
 		if (!flow_offload_has_one_action(&f->rule->action)) {
@@ -242,53 +357,41 @@ static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
 
 		if (priv->tc.block_shared) {
 			NL_SET_ERR_MSG_MOD(extack,
-					   "Rate limit is not supported on shared blocks");
+					   "Matchall offloads not supported on shared blocks");
 			return -EOPNOTSUPP;
 		}
 
 		action = &f->rule->action.entries[0];
 
-		if (action->id != FLOW_ACTION_POLICE) {
+		switch (action->id) {
+		case FLOW_ACTION_POLICE:
+			return ocelot_setup_tc_cls_matchall_police(priv, f,
+								   ingress,
+								   extack);
+			break;
+		case FLOW_ACTION_MIRRED:
+			return ocelot_setup_tc_cls_matchall_mirred(priv, f,
+								   ingress,
+								   extack);
+		default:
 			NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
 			return -EOPNOTSUPP;
 		}
 
-		if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
-			NL_SET_ERR_MSG_MOD(extack,
-					   "Only one policer per port is supported");
-			return -EEXIST;
-		}
-
-		err = ocelot_policer_validate(&f->rule->action, action,
-					      extack);
-		if (err)
-			return err;
-
-		pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
-		pol.burst = action->police.burst;
-
-		err = ocelot_port_policer_add(ocelot, port, &pol);
-		if (err) {
-			NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
-			return err;
-		}
-
-		priv->tc.police_id = f->cookie;
-		priv->tc.offload_cnt++;
-		return 0;
+		break;
 	case TC_CLSMATCHALL_DESTROY:
-		if (priv->tc.police_id != f->cookie)
+		action = &f->rule->action.entries[0];
+
+		if (f->cookie == priv->tc.police_id)
+			return ocelot_del_tc_cls_matchall_police(priv, extack);
+		else if (f->cookie == priv->tc.ingress_mirred_id ||
+			 f->cookie == priv->tc.egress_mirred_id)
+			return ocelot_del_tc_cls_matchall_mirred(priv, ingress,
+								 extack);
+		else
 			return -ENOENT;
 
-		err = ocelot_port_policer_del(ocelot, port);
-		if (err) {
-			NL_SET_ERR_MSG_MOD(extack,
-					   "Could not delete policer");
-			return err;
-		}
-		priv->tc.police_id = 0;
-		priv->tc.offload_cnt--;
-		return 0;
+		break;
 	case TC_CLSMATCHALL_STATS:
 	default:
 		return -EOPNOTSUPP;

drivers/net/ethernet/mscc/ocelot_vcap.c

@@ -335,6 +335,7 @@ static void is2_action_set(struct ocelot *ocelot, struct vcap_data *data,
 
 	vcap_action_set(vcap, data, VCAP_IS2_ACT_MASK_MODE, a->mask_mode);
 	vcap_action_set(vcap, data, VCAP_IS2_ACT_PORT_MASK, a->port_mask);
+	vcap_action_set(vcap, data, VCAP_IS2_ACT_MIRROR_ENA, a->mirror_ena);
 	vcap_action_set(vcap, data, VCAP_IS2_ACT_POLICE_ENA, a->police_ena);
 	vcap_action_set(vcap, data, VCAP_IS2_ACT_POLICE_IDX, a->pol_ix);
 	vcap_action_set(vcap, data, VCAP_IS2_ACT_CPU_QU_NUM, a->cpu_qu_num);
@@ -955,14 +956,21 @@ int ocelot_vcap_policer_del(struct ocelot *ocelot, u32 pol_ix)
 }
 EXPORT_SYMBOL(ocelot_vcap_policer_del);
 
-static int ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
-					   struct ocelot_vcap_block *block,
-					   struct ocelot_vcap_filter *filter)
+static int
+ocelot_vcap_filter_add_aux_resources(struct ocelot *ocelot,
+				     struct ocelot_vcap_filter *filter,
+				     struct netlink_ext_ack *extack)
 {
-	struct ocelot_vcap_filter *tmp;
-	struct list_head *pos, *n;
+	struct ocelot_mirror *m;
 	int ret;
 
+	if (filter->block_id == VCAP_IS2 && filter->action.mirror_ena) {
+		m = ocelot_mirror_get(ocelot, filter->egress_port.value,
+				      extack);
+		if (IS_ERR(m))
+			return PTR_ERR(m);
+	}
+
 	if (filter->block_id == VCAP_IS2 && filter->action.police_ena) {
 		ret = ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
 					      &filter->action.pol);
@@ -970,6 +978,33 @@ static int ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
 			return ret;
 	}
 
+	return 0;
+}
+
+static void
+ocelot_vcap_filter_del_aux_resources(struct ocelot *ocelot,
+				     struct ocelot_vcap_filter *filter)
+{
+	if (filter->block_id == VCAP_IS2 && filter->action.police_ena)
+		ocelot_vcap_policer_del(ocelot, filter->action.pol_ix);
+
+	if (filter->block_id == VCAP_IS2 && filter->action.mirror_ena)
+		ocelot_mirror_put(ocelot);
+}
+
+static int ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
+					   struct ocelot_vcap_block *block,
+					   struct ocelot_vcap_filter *filter,
+					   struct netlink_ext_ack *extack)
+{
+	struct ocelot_vcap_filter *tmp;
+	struct list_head *pos, *n;
+	int ret;
+
+	ret = ocelot_vcap_filter_add_aux_resources(ocelot, filter, extack);
+	if (ret)
+		return ret;
+
 	block->count++;
 
 	if (list_empty(&block->rules)) {
@@ -1168,7 +1203,7 @@ int ocelot_vcap_filter_add(struct ocelot *ocelot,
 	}
 
 	/* Add filter to the linked list */
-	ret = ocelot_vcap_filter_add_to_block(ocelot, block, filter);
+	ret = ocelot_vcap_filter_add_to_block(ocelot, block, filter, extack);
 	if (ret)
 		return ret;
 
@@ -1199,11 +1234,7 @@ static void ocelot_vcap_block_remove_filter(struct ocelot *ocelot,
 
 	list_for_each_entry_safe(tmp, n, &block->rules, list) {
 		if (ocelot_vcap_filter_equal(filter, tmp)) {
-			if (tmp->block_id == VCAP_IS2 &&
-			    tmp->action.police_ena)
-				ocelot_vcap_policer_del(ocelot,
-							tmp->action.pol_ix);
-
+			ocelot_vcap_filter_del_aux_resources(ocelot, tmp);
 			list_del(&tmp->list);
 			kfree(tmp);
 		}

include/net/dsa.h

@@ -1028,7 +1028,7 @@ struct dsa_switch_ops {
 				    struct flow_cls_offload *cls, bool ingress);
 	int	(*port_mirror_add)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror,
-				   bool ingress);
+				   bool ingress, struct netlink_ext_ack *extack);
 	void	(*port_mirror_del)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror);
 	int	(*port_policer_add)(struct dsa_switch *ds, int port,

include/soc/mscc/ocelot.h

@@ -642,6 +642,11 @@ struct ocelot_lag_fdb {
 	struct list_head list;
 };
 
+struct ocelot_mirror {
+	refcount_t refcount;
+	int to;
+};
+
 struct ocelot_port {
 	struct ocelot			*ocelot;
 
@@ -723,6 +728,7 @@ struct ocelot {
 	struct ocelot_vcap_block	block[3];
 	struct ocelot_vcap_policer	vcap_pol;
 	struct vcap_props		*vcap;
+	struct ocelot_mirror		*mirror;
 
 	struct ocelot_psfp_list		psfp;
 
@@ -908,6 +914,9 @@ int ocelot_get_max_mtu(struct ocelot *ocelot, int port);
 int ocelot_port_policer_add(struct ocelot *ocelot, int port,
 			    struct ocelot_policer *pol);
 int ocelot_port_policer_del(struct ocelot *ocelot, int port);
+int ocelot_port_mirror_add(struct ocelot *ocelot, int from, int to,
+			   bool ingress, struct netlink_ext_ack *extack);
+void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress);
 int ocelot_cls_flower_replace(struct ocelot *ocelot, int port,
 			      struct flow_cls_offload *f, bool ingress);
 int ocelot_cls_flower_destroy(struct ocelot *ocelot, int port,

include/soc/mscc/ocelot_vcap.h

@@ -654,6 +654,7 @@ struct ocelot_vcap_action {
 			enum ocelot_mask_mode mask_mode;
 			unsigned long port_mask;
 			bool police_ena;
+			bool mirror_ena;
 			struct ocelot_policer pol;
 			u32 pol_ix;
 		};
@@ -697,6 +698,7 @@ struct ocelot_vcap_filter {
 	unsigned long ingress_port_mask;
 	/* For VCAP ES0 */
 	struct ocelot_vcap_port ingress_port;
+	/* For VCAP IS2 mirrors and ES0 */
 	struct ocelot_vcap_port egress_port;
 
 	enum ocelot_vcap_bit dmac_mc;

net/dsa/slave.c

@@ -1173,6 +1173,7 @@ dsa_slave_add_cls_matchall_mirred(struct net_device *dev,
 				  struct tc_cls_matchall_offload *cls,
 				  bool ingress)
 {
+	struct netlink_ext_ack *extack = cls->common.extack;
 	struct dsa_port *dp = dsa_slave_to_port(dev);
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_mall_mirror_tc_entry *mirror;
@@ -1210,7 +1211,7 @@ dsa_slave_add_cls_matchall_mirred(struct net_device *dev,
 	mirror->to_local_port = to_dp->index;
 	mirror->ingress = ingress;
 
-	err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
+	err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress, extack);
 	if (err) {
 		kfree(mall_tc_entry);
 		return err;