diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c
index e29146d..b56003d 100644
--- a/drivers/net/netdevsim/bus.c
+++ b/drivers/net/netdevsim/bus.c
@@ -27,6 +27,9 @@ static struct nsim_bus_dev *to_nsim_bus_dev(struct device *dev)
 static int nsim_bus_dev_vfs_enable(struct nsim_bus_dev *nsim_bus_dev,
 				   unsigned int num_vfs)
 {
+	struct nsim_dev *nsim_dev;
+	int err = 0;
+
 	if (nsim_bus_dev->max_vfs < num_vfs)
 		return -ENOMEM;
 
@@ -34,12 +37,24 @@ static int nsim_bus_dev_vfs_enable(struct nsim_bus_dev *nsim_bus_dev,
 		return -ENOMEM;
 	nsim_bus_dev->num_vfs = num_vfs;
 
-	return 0;
+	nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
+	if (nsim_esw_mode_is_switchdev(nsim_dev)) {
+		err = nsim_esw_switchdev_enable(nsim_dev, NULL);
+		if (err)
+			nsim_bus_dev->num_vfs = 0;
+	}
+
+	return err;
 }
 
 void nsim_bus_dev_vfs_disable(struct nsim_bus_dev *nsim_bus_dev)
 {
+	struct nsim_dev *nsim_dev;
+
 	nsim_bus_dev->num_vfs = 0;
+	nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
+	if (nsim_esw_mode_is_switchdev(nsim_dev))
+		nsim_esw_legacy_enable(nsim_dev, NULL);
 }
 
 static ssize_t
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 8bd7654..ed9ce08 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -439,6 +439,72 @@ static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev)
 	devlink_region_destroy(nsim_dev->dummy_region);
 }
 
+static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port);
+int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, struct netlink_ext_ack *extack)
+{
+	struct nsim_dev_port *nsim_dev_port, *tmp;
+
+	mutex_lock(&nsim_dev->port_list_lock);
+	list_for_each_entry_safe(nsim_dev_port, tmp, &nsim_dev->port_list, list)
+		if (nsim_dev_port_is_vf(nsim_dev_port))
+			__nsim_dev_port_del(nsim_dev_port);
+	mutex_unlock(&nsim_dev->port_list_lock);
+	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
+	return 0;
+}
+
+int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, struct netlink_ext_ack *extack)
+{
+	struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
+	int i, err;
+
+	for (i = 0; i < nsim_bus_dev->num_vfs; i++) {
+		err = nsim_dev_port_add(nsim_bus_dev, NSIM_DEV_PORT_TYPE_VF, i);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack, "Failed to initialize VFs' netdevsim ports");
+			pr_err("Failed to initialize VF id=%d. %d.\n", i, err);
+			goto err_port_add_vfs;
+		}
+	}
+	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
+	return 0;
+
+err_port_add_vfs:
+	for (i--; i >= 0; i--)
+		nsim_dev_port_del(nsim_bus_dev, NSIM_DEV_PORT_TYPE_VF, i);
+	return err;
+}
+
+static int nsim_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
+					 struct netlink_ext_ack *extack)
+{
+	struct nsim_dev *nsim_dev = devlink_priv(devlink);
+	int err = 0;
+
+	mutex_lock(&nsim_dev->nsim_bus_dev->vfs_lock);
+	if (mode == nsim_dev->esw_mode)
+		goto unlock;
+
+	if (mode == DEVLINK_ESWITCH_MODE_LEGACY)
+		err = nsim_esw_legacy_enable(nsim_dev, extack);
+	else if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
+		err = nsim_esw_switchdev_enable(nsim_dev, extack);
+	else
+		err = -EINVAL;
+
+unlock:
+	mutex_unlock(&nsim_dev->nsim_bus_dev->vfs_lock);
+	return err;
+}
+
+static int nsim_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
+{
+	struct nsim_dev *nsim_dev = devlink_priv(devlink);
+
+	*mode = nsim_dev->esw_mode;
+	return 0;
+}
+
 struct nsim_trap_item {
 	void *trap_ctx;
 	enum devlink_trap_action action;
@@ -925,6 +991,8 @@ static int nsim_dev_devlink_trap_init(struct devlink *devlink,
 }
 
 static const struct devlink_ops nsim_dev_devlink_ops = {
+	.eswitch_mode_set = nsim_devlink_eswitch_mode_set,
+	.eswitch_mode_get = nsim_devlink_eswitch_mode_get,
 	.supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT |
 					 DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK,
 	.reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
@@ -1177,6 +1245,7 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
 
 	devlink_params_publish(devlink);
 	devlink_reload_enable(devlink);
+	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
 	return 0;
 
 err_psample_exit:
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index 9352e18..c3aeb15 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -113,6 +113,11 @@ static int nsim_set_vf_rate(struct net_device *dev, int vf, int min, int max)
 	struct netdevsim *ns = netdev_priv(dev);
 	struct nsim_bus_dev *nsim_bus_dev = ns->nsim_bus_dev;
 
+	if (nsim_esw_mode_is_switchdev(ns->nsim_dev)) {
+		pr_err("Not supported in switchdev mode. Please use devlink API.\n");
+		return -EOPNOTSUPP;
+	}
+
 	if (vf >= nsim_bus_dev->num_vfs)
 		return -EINVAL;
 
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index e025c1b..13a0042 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -257,8 +257,22 @@ struct nsim_dev {
 		u32 sleep;
 	} udp_ports;
 	struct nsim_dev_psample *psample;
+	u16 esw_mode;
 };
 
+int nsim_esw_legacy_enable(struct nsim_dev *nsim_dev, struct netlink_ext_ack *extack);
+int nsim_esw_switchdev_enable(struct nsim_dev *nsim_dev, struct netlink_ext_ack *extack);
+
+static inline bool nsim_esw_mode_is_legacy(struct nsim_dev *nsim_dev)
+{
+	return nsim_dev->esw_mode == DEVLINK_ESWITCH_MODE_LEGACY;
+}
+
+static inline bool nsim_esw_mode_is_switchdev(struct nsim_dev *nsim_dev)
+{
+	return nsim_dev->esw_mode == DEVLINK_ESWITCH_MODE_SWITCHDEV;
+}
+
 static inline struct net *nsim_dev_net(struct nsim_dev *nsim_dev)
 {
 	return devlink_net(priv_to_devlink(nsim_dev));
