scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

11 files changed, 3442 insertions, 0 deletions

diff --git a/net/8021q/Kconfig b/net/8021q/Kconfig
new file mode 100644
index 000000000..8bf7a1765
--- /dev/null
+++ b/net/8021q/Kconfig
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Configuration for 802.1Q VLAN support
+#
+
+config VLAN_8021Q
+	tristate "802.1Q/802.1ad VLAN Support"
+	help
+	  Select this and you will be able to create 802.1Q VLAN interfaces
+	  on your Ethernet interfaces. 802.1Q VLAN supports almost
+	  everything a regular Ethernet interface does, including
+	  firewalling, bridging, and of course IP traffic. You will need
+	  the 'ip' utility in order to effectively use VLANs.
+	  See the VLAN web page for more information:
+	  <http://www.candelatech.com/~greear/vlan.html>
+
+	  To compile this code as a module, choose M here: the module
+	  will be called 8021q.
+
+	  If unsure, say N.
+
+config VLAN_8021Q_GVRP
+	bool "GVRP (GARP VLAN Registration Protocol) support"
+	depends on VLAN_8021Q
+	select GARP
+	help
+	  Select this to enable GVRP end-system support. GVRP is used for
+	  automatic propagation of registered VLANs to switches.
+
+	  If unsure, say N.
+
+config VLAN_8021Q_MVRP
+	bool "MVRP (Multiple VLAN Registration Protocol) support"
+	depends on VLAN_8021Q
+	select MRP
+	help
+	  Select this to enable MVRP end-system support. MVRP is used for
+	  automatic propagation of registered VLANs to switches; it
+	  supersedes GVRP and is not backwards-compatible.
+
+	  If unsure, say N.
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
new file mode 100644
index 000000000..e05d4d7aa
--- /dev/null
+++ b/net/8021q/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Linux VLAN layer.
+#
+obj-$(subst m,y,$(CONFIG_VLAN_8021Q))	+= vlan_core.o
+obj-$(CONFIG_VLAN_8021Q)		+= 8021q.o
+
+8021q-y					:= vlan.o vlan_dev.o vlan_netlink.o
+8021q-$(CONFIG_VLAN_8021Q_GVRP)		+= vlan_gvrp.o
+8021q-$(CONFIG_VLAN_8021Q_MVRP)		+= vlan_mvrp.o
+8021q-$(CONFIG_PROC_FS)			+= vlanproc.o
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
new file mode 100644
index 000000000..2d2efb877
--- /dev/null
+++ b/net/8021q/vlan.c
@@ -0,0 +1,710 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * INET		802.1Q VLAN
+ *		Ethernet-type device handling.
+ *
+ * Authors:	Ben Greear <greearb@candelatech.com>
+ *              Please send support related email to: netdev@vger.kernel.org
+ *              VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
+ *
+ * Fixes:
+ *              Fix for packet capture - Nick Eggleston <nick@dccinc.com>;
+ *		Add HW acceleration hooks - David S. Miller <davem@redhat.com>;
+ *		Correct all the locking - David S. Miller <davem@redhat.com>;
+ *		Use hash table for VLAN groups - David S. Miller <davem@redhat.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/rculist.h>
+#include <net/arp.h>
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <linux/uaccess.h>
+
+#include <linux/if_vlan.h>
+#include "vlan.h"
+#include "vlanproc.h"
+
+#define DRV_VERSION "1.8"
+
+/* Global VLAN variables */
+
+unsigned int vlan_net_id __read_mostly;
+
+const char vlan_fullname[] = "802.1Q VLAN Support";
+const char vlan_version[] = DRV_VERSION;
+
+/* End of global variables definitions. */
+
+static int vlan_group_prealloc_vid(struct vlan_group *vg,
+				   __be16 vlan_proto, u16 vlan_id)
+{
+	struct net_device **array;
+	unsigned int vidx;
+	unsigned int size;
+	int pidx;
+
+	ASSERT_RTNL();
+
+	pidx  = vlan_proto_idx(vlan_proto);
+	if (pidx < 0)
+		return -EINVAL;
+
+	vidx  = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
+	array = vg->vlan_devices_arrays[pidx][vidx];
+	if (array != NULL)
+		return 0;
+
+	size = sizeof(struct net_device *) * VLAN_GROUP_ARRAY_PART_LEN;
+	array = kzalloc(size, GFP_KERNEL_ACCOUNT);
+	if (array == NULL)
+		return -ENOBUFS;
+
+	/* paired with smp_rmb() in __vlan_group_get_device() */
+	smp_wmb();
+
+	vg->vlan_devices_arrays[pidx][vidx] = array;
+	return 0;
+}
+
+void vlan_stacked_transfer_operstate(const struct net_device *rootdev,
+				     struct net_device *dev,
+				     struct vlan_dev_priv *vlan)
+{
+	if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
+		netif_stacked_transfer_operstate(rootdev, dev);
+}
+
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+	struct vlan_info *vlan_info;
+	struct vlan_group *grp;
+	u16 vlan_id = vlan->vlan_id;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(real_dev->vlan_info);
+	BUG_ON(!vlan_info);
+
+	grp = &vlan_info->grp;
+
+	grp->nr_vlan_devs--;
+
+	if (vlan->flags & VLAN_FLAG_MVRP)
+		vlan_mvrp_request_leave(dev);
+	if (vlan->flags & VLAN_FLAG_GVRP)
+		vlan_gvrp_request_leave(dev);
+
+	vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL);
+
+	netdev_upper_dev_unlink(real_dev, dev);
+	/* Because unregister_netdevice_queue() makes sure at least one rcu
+	 * grace period is respected before device freeing,
+	 * we dont need to call synchronize_net() here.
+	 */
+	unregister_netdevice_queue(dev, head);
+
+	if (grp->nr_vlan_devs == 0) {
+		vlan_mvrp_uninit_applicant(real_dev);
+		vlan_gvrp_uninit_applicant(real_dev);
+	}
+
+	vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
+}
+
+int vlan_check_real_dev(struct net_device *real_dev,
+			__be16 protocol, u16 vlan_id,
+			struct netlink_ext_ack *extack)
+{
+	const char *name = real_dev->name;
+
+	if (real_dev->features & NETIF_F_VLAN_CHALLENGED ||
+	    real_dev->type != ARPHRD_ETHER) {
+		pr_info("VLANs not supported on %s\n", name);
+		NL_SET_ERR_MSG_MOD(extack, "VLANs not supported on device");
+		return -EOPNOTSUPP;
+	}
+
+	if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) {
+		NL_SET_ERR_MSG_MOD(extack, "VLAN device already exists");
+		return -EEXIST;
+	}
+
+	return 0;
+}
+
+int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+	u16 vlan_id = vlan->vlan_id;
+	struct vlan_info *vlan_info;
+	struct vlan_group *grp;
+	int err;
+
+	err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);
+	if (err)
+		return err;
+
+	vlan_info = rtnl_dereference(real_dev->vlan_info);
+	/* vlan_info should be there now. vlan_vid_add took care of it */
+	BUG_ON(!vlan_info);
+
+	grp = &vlan_info->grp;
+	if (grp->nr_vlan_devs == 0) {
+		err = vlan_gvrp_init_applicant(real_dev);
+		if (err < 0)
+			goto out_vid_del;
+		err = vlan_mvrp_init_applicant(real_dev);
+		if (err < 0)
+			goto out_uninit_gvrp;
+	}
+
+	err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id);
+	if (err < 0)
+		goto out_uninit_mvrp;
+
+	err = register_netdevice(dev);
+	if (err < 0)
+		goto out_uninit_mvrp;
+
+	err = netdev_upper_dev_link(real_dev, dev, extack);
+	if (err)
+		goto out_unregister_netdev;
+
+	vlan_stacked_transfer_operstate(real_dev, dev, vlan);
+	linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */
+
+	/* So, got the sucker initialized, now lets place
+	 * it into our local structure.
+	 */
+	vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev);
+	grp->nr_vlan_devs++;
+
+	netdev_update_features(dev);
+
+	return 0;
+
+out_unregister_netdev:
+	unregister_netdevice(dev);
+out_uninit_mvrp:
+	if (grp->nr_vlan_devs == 0)
+		vlan_mvrp_uninit_applicant(real_dev);
+out_uninit_gvrp:
+	if (grp->nr_vlan_devs == 0)
+		vlan_gvrp_uninit_applicant(real_dev);
+out_vid_del:
+	vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
+	return err;
+}
+
+/*  Attach a VLAN device to a mac address (ie Ethernet Card).
+ *  Returns 0 if the device was created or a negative error code otherwise.
+ */
+static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
+{
+	struct net_device *new_dev;
+	struct vlan_dev_priv *vlan;
+	struct net *net = dev_net(real_dev);
+	struct vlan_net *vn = net_generic(net, vlan_net_id);
+	char name[IFNAMSIZ];
+	int err;
+
+	if (vlan_id >= VLAN_VID_MASK)
+		return -ERANGE;
+
+	err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id,
+				  NULL);
+	if (err < 0)
+		return err;
+
+	/* Gotta set up the fields for the device. */
+	switch (vn->name_type) {
+	case VLAN_NAME_TYPE_RAW_PLUS_VID:
+		/* name will look like:	 eth1.0005 */
+		snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id);
+		break;
+	case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
+		/* Put our vlan.VID in the name.
+		 * Name will look like:	 vlan5
+		 */
+		snprintf(name, IFNAMSIZ, "vlan%i", vlan_id);
+		break;
+	case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
+		/* Put our vlan.VID in the name.
+		 * Name will look like:	 eth0.5
+		 */
+		snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id);
+		break;
+	case VLAN_NAME_TYPE_PLUS_VID:
+		/* Put our vlan.VID in the name.
+		 * Name will look like:	 vlan0005
+		 */
+	default:
+		snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
+	}
+
+	new_dev = alloc_netdev(sizeof(struct vlan_dev_priv), name,
+			       NET_NAME_UNKNOWN, vlan_setup);
+
+	if (new_dev == NULL)
+		return -ENOBUFS;
+
+	dev_net_set(new_dev, net);
+	/* need 4 bytes for extra VLAN header info,
+	 * hope the underlying device can handle it.
+	 */
+	new_dev->mtu = real_dev->mtu;
+
+	vlan = vlan_dev_priv(new_dev);
+	vlan->vlan_proto = htons(ETH_P_8021Q);
+	vlan->vlan_id = vlan_id;
+	vlan->real_dev = real_dev;
+	vlan->dent = NULL;
+	vlan->flags = VLAN_FLAG_REORDER_HDR;
+
+	new_dev->rtnl_link_ops = &vlan_link_ops;
+	err = register_vlan_dev(new_dev, NULL);
+	if (err < 0)
+		goto out_free_newdev;
+
+	return 0;
+
+out_free_newdev:
+	free_netdev(new_dev);
+	return err;
+}
+
+static void vlan_sync_address(struct net_device *dev,
+			      struct net_device *vlandev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+
+	/* May be called without an actual change */
+	if (ether_addr_equal(vlan->real_dev_addr, dev->dev_addr))
+		return;
+
+	/* vlan continues to inherit address of lower device */
+	if (vlan_dev_inherit_address(vlandev, dev))
+		goto out;
+
+	/* vlan address was different from the old address and is equal to
+	 * the new address */
+	if (!ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
+	    ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
+		dev_uc_del(dev, vlandev->dev_addr);
+
+	/* vlan address was equal to the old address and is different from
+	 * the new address */
+	if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
+	    !ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
+		dev_uc_add(dev, vlandev->dev_addr);
+
+out:
+	ether_addr_copy(vlan->real_dev_addr, dev->dev_addr);
+}
+
+static int __vlan_device_event(struct net_device *dev, unsigned long event)
+{
+	int err = 0;
+
+	switch (event) {
+	case NETDEV_CHANGENAME:
+		vlan_proc_rem_dev(dev);
+		err = vlan_proc_add_dev(dev);
+		break;
+	case NETDEV_REGISTER:
+		err = vlan_proc_add_dev(dev);
+		break;
+	case NETDEV_UNREGISTER:
+		vlan_proc_rem_dev(dev);
+		break;
+	}
+
+	return err;
+}
+
+static void vlan_vid0_add(struct net_device *dev)
+{
+	struct vlan_info *vlan_info;
+	int err;
+
+	if (!(dev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
+		return;
+
+	pr_info("adding VLAN 0 to HW filter on device %s\n", dev->name);
+
+	err = vlan_vid_add(dev, htons(ETH_P_8021Q), 0);
+	if (err)
+		return;
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	vlan_info->auto_vid0 = true;
+}
+
+static void vlan_vid0_del(struct net_device *dev)
+{
+	struct vlan_info *vlan_info = rtnl_dereference(dev->vlan_info);
+
+	if (!vlan_info || !vlan_info->auto_vid0)
+		return;
+
+	vlan_info->auto_vid0 = false;
+	vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
+}
+
+static int vlan_device_event(struct notifier_block *unused, unsigned long event,
+			     void *ptr)
+{
+	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	struct vlan_group *grp;
+	struct vlan_info *vlan_info;
+	int i, flgs;
+	struct net_device *vlandev;
+	bool last = false;
+	LIST_HEAD(list);
+	int err;
+
+	if (is_vlan_dev(dev)) {
+		int err = __vlan_device_event(dev, event);
+
+		if (err)
+			return notifier_from_errno(err);
+	}
+
+	if (event == NETDEV_UP)
+		vlan_vid0_add(dev);
+	else if (event == NETDEV_DOWN)
+		vlan_vid0_del(dev);
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	if (!vlan_info)
+		goto out;
+	grp = &vlan_info->grp;
+
+	/* It is OK that we do not hold the group lock right now,
+	 * as we run under the RTNL lock.
+	 */
+
+	switch (event) {
+	case NETDEV_CHANGE:
+		/* Propagate real device state to vlan devices */
+		vlan_group_for_each_dev(grp, i, vlandev)
+			vlan_stacked_transfer_operstate(dev, vlandev,
+							vlan_dev_priv(vlandev));
+		break;
+
+	case NETDEV_CHANGEADDR:
+		/* Adjust unicast filters on underlying device */
+		vlan_group_for_each_dev(grp, i, vlandev) {
+			flgs = vlandev->flags;
+			if (!(flgs & IFF_UP))
+				continue;
+
+			vlan_sync_address(dev, vlandev);
+		}
+		break;
+
+	case NETDEV_CHANGEMTU:
+		vlan_group_for_each_dev(grp, i, vlandev) {
+			if (vlandev->mtu <= dev->mtu)
+				continue;
+
+			netdev_work_sched(vlandev, VLAN_WORK_MTU);
+		}
+		break;
+
+	case NETDEV_FEAT_CHANGE:
+		vlan_group_for_each_dev(grp, i, vlandev)
+			netdev_work_sched(vlandev, VLAN_WORK_FEATURES);
+		break;
+
+	case NETDEV_DOWN:
+	case NETDEV_UP:
+		vlan_group_for_each_dev(grp, i, vlandev)
+			netdev_work_sched(vlandev, VLAN_WORK_LINK_STATE);
+		break;
+
+	case NETDEV_UNREGISTER:
+		/* twiddle thumbs on netns device moves */
+		if (dev->reg_state != NETREG_UNREGISTERING)
+			break;
+
+		vlan_group_for_each_dev(grp, i, vlandev) {
+			/* removal of last vid destroys vlan_info, abort
+			 * afterwards */
+			if (vlan_info->nr_vids == 1)
+				last = true;
+
+			unregister_vlan_dev(vlandev, &list);
+			if (last)
+				break;
+		}
+		unregister_netdevice_many(&list);
+		break;
+
+	case NETDEV_PRE_TYPE_CHANGE:
+		/* Forbid underlaying device to change its type. */
+		if (vlan_uses_dev(dev))
+			return NOTIFY_BAD;
+		break;
+
+	case NETDEV_NOTIFY_PEERS:
+	case NETDEV_BONDING_FAILOVER:
+	case NETDEV_RESEND_IGMP:
+		/* Propagate to vlan devices */
+		vlan_group_for_each_dev(grp, i, vlandev)
+			call_netdevice_notifiers(event, vlandev);
+		break;
+
+	case NETDEV_CVLAN_FILTER_PUSH_INFO:
+		err = vlan_filter_push_vids(vlan_info, htons(ETH_P_8021Q));
+		if (err)
+			return notifier_from_errno(err);
+		break;
+
+	case NETDEV_CVLAN_FILTER_DROP_INFO:
+		vlan_filter_drop_vids(vlan_info, htons(ETH_P_8021Q));
+		break;
+
+	case NETDEV_SVLAN_FILTER_PUSH_INFO:
+		err = vlan_filter_push_vids(vlan_info, htons(ETH_P_8021AD));
+		if (err)
+			return notifier_from_errno(err);
+		break;
+
+	case NETDEV_SVLAN_FILTER_DROP_INFO:
+		vlan_filter_drop_vids(vlan_info, htons(ETH_P_8021AD));
+		break;
+	}
+
+out:
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block vlan_notifier_block __read_mostly = {
+	.notifier_call = vlan_device_event,
+};
+
+/*
+ *	VLAN IOCTL handler.
+ *	o execute requested action or pass command to the device driver
+ *   arg is really a struct vlan_ioctl_args __user *.
+ */
+static int vlan_ioctl_handler(struct net *net, void __user *arg)
+{
+	int err;
+	struct vlan_ioctl_args args;
+	struct net_device *dev = NULL;
+
+	if (copy_from_user(&args, arg, sizeof(struct vlan_ioctl_args)))
+		return -EFAULT;
+
+	/* Null terminate this sucker, just in case. */
+	args.device1[sizeof(args.device1) - 1] = 0;
+	args.u.device2[sizeof(args.u.device2) - 1] = 0;
+
+	rtnl_lock();
+
+	switch (args.cmd) {
+	case SET_VLAN_INGRESS_PRIORITY_CMD:
+	case SET_VLAN_EGRESS_PRIORITY_CMD:
+	case SET_VLAN_FLAG_CMD:
+	case ADD_VLAN_CMD:
+	case DEL_VLAN_CMD:
+	case GET_VLAN_REALDEV_NAME_CMD:
+	case GET_VLAN_VID_CMD:
+		err = -ENODEV;
+		dev = __dev_get_by_name(net, args.device1);
+		if (!dev)
+			goto out;
+
+		err = -EINVAL;
+		if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev))
+			goto out;
+	}
+
+	switch (args.cmd) {
+	case SET_VLAN_INGRESS_PRIORITY_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		vlan_dev_set_ingress_priority(dev,
+					      args.u.skb_priority,
+					      args.vlan_qos);
+		err = 0;
+		break;
+
+	case SET_VLAN_EGRESS_PRIORITY_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		err = vlan_dev_set_egress_priority(dev,
+						   args.u.skb_priority,
+						   args.vlan_qos);
+		break;
+
+	case SET_VLAN_FLAG_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		err = vlan_dev_change_flags(dev,
+					    args.vlan_qos ? args.u.flag : 0,
+					    args.u.flag);
+		break;
+
+	case SET_VLAN_NAME_TYPE_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) {
+			struct vlan_net *vn;
+
+			vn = net_generic(net, vlan_net_id);
+			vn->name_type = args.u.name_type;
+			err = 0;
+		} else {
+			err = -EINVAL;
+		}
+		break;
+
+	case ADD_VLAN_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		err = register_vlan_device(dev, args.u.VID);
+		break;
+
+	case DEL_VLAN_CMD:
+		err = -EPERM;
+		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+			break;
+		unregister_vlan_dev(dev, NULL);
+		err = 0;
+		break;
+
+	case GET_VLAN_REALDEV_NAME_CMD:
+		err = 0;
+		vlan_dev_get_realdev_name(dev, args.u.device2,
+					  sizeof(args.u.device2));
+		if (copy_to_user(arg, &args,
+				 sizeof(struct vlan_ioctl_args)))
+			err = -EFAULT;
+		break;
+
+	case GET_VLAN_VID_CMD:
+		err = 0;
+		args.u.VID = vlan_dev_vlan_id(dev);
+		if (copy_to_user(arg, &args,
+				 sizeof(struct vlan_ioctl_args)))
+		      err = -EFAULT;
+		break;
+
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+out:
+	rtnl_unlock();
+	return err;
+}
+
+static int __net_init vlan_init_net(struct net *net)
+{
+	struct vlan_net *vn = net_generic(net, vlan_net_id);
+	int err;
+
+	vn->name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
+
+	err = vlan_proc_init(net);
+
+	return err;
+}
+
+static void __net_exit vlan_exit_net(struct net *net)
+{
+	vlan_proc_cleanup(net);
+}
+
+static struct pernet_operations vlan_net_ops = {
+	.init = vlan_init_net,
+	.exit = vlan_exit_net,
+	.id   = &vlan_net_id,
+	.size = sizeof(struct vlan_net),
+};
+
+static int __init vlan_proto_init(void)
+{
+	int err;
+
+	pr_info("%s v%s\n", vlan_fullname, vlan_version);
+
+	err = register_pernet_subsys(&vlan_net_ops);
+	if (err < 0)
+		goto err0;
+
+	err = register_netdevice_notifier(&vlan_notifier_block);
+	if (err < 0)
+		goto err2;
+
+	err = vlan_gvrp_init();
+	if (err < 0)
+		goto err3;
+
+	err = vlan_mvrp_init();
+	if (err < 0)
+		goto err4;
+
+	err = vlan_netlink_init();
+	if (err < 0)
+		goto err5;
+
+	vlan_ioctl_set(vlan_ioctl_handler);
+	return 0;
+
+err5:
+	vlan_mvrp_uninit();
+err4:
+	vlan_gvrp_uninit();
+err3:
+	unregister_netdevice_notifier(&vlan_notifier_block);
+err2:
+	unregister_pernet_subsys(&vlan_net_ops);
+err0:
+	return err;
+}
+
+static void __exit vlan_cleanup_module(void)
+{
+	vlan_ioctl_set(NULL);
+
+	vlan_netlink_fini();
+
+	unregister_netdevice_notifier(&vlan_notifier_block);
+
+	unregister_pernet_subsys(&vlan_net_ops);
+	rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
+	vlan_mvrp_uninit();
+	vlan_gvrp_uninit();
+}
+
+module_init(vlan_proto_init);
+module_exit(vlan_cleanup_module);
+
+MODULE_DESCRIPTION("802.1Q/802.1ad VLAN Protocol");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+MODULE_IMPORT_NS("NETDEV_INTERNAL");
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
new file mode 100644
index 000000000..c41caaf94
--- /dev/null
+++ b/net/8021q/vlan.h
@@ -0,0 +1,218 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __BEN_VLAN_802_1Q_INC__
+#define __BEN_VLAN_802_1Q_INC__
+
+#include <linux/if_vlan.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/list.h>
+
+/* if this changes, algorithm will have to be reworked because this
+ * depends on completely exhausting the VLAN identifier space.  Thus
+ * it gives constant time look-up, but in many cases it wastes memory.
+ */
+#define VLAN_GROUP_ARRAY_SPLIT_PARTS  8
+#define VLAN_GROUP_ARRAY_PART_LEN     (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
+
+enum vlan_protos {
+	VLAN_PROTO_8021Q	= 0,
+	VLAN_PROTO_8021AD,
+	VLAN_PROTO_NUM,
+};
+
+struct vlan_group {
+	unsigned int		nr_vlan_devs;
+	struct hlist_node	hlist;	/* linked list */
+	struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
+					       [VLAN_GROUP_ARRAY_SPLIT_PARTS];
+};
+
+struct vlan_info {
+	struct net_device	*real_dev; /* The ethernet(like) device
+					    * the vlan is attached to.
+					    */
+	struct vlan_group	grp;
+	struct list_head	vid_list;
+	unsigned int		nr_vids;
+	bool			auto_vid0;
+	struct rcu_head		rcu;
+};
+
+static inline int vlan_proto_idx(__be16 proto)
+{
+	switch (proto) {
+	case htons(ETH_P_8021Q):
+		return VLAN_PROTO_8021Q;
+	case htons(ETH_P_8021AD):
+		return VLAN_PROTO_8021AD;
+	default:
+		WARN(1, "invalid VLAN protocol: 0x%04x\n", ntohs(proto));
+		return -EINVAL;
+	}
+}
+
+static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
+							 unsigned int pidx,
+							 u16 vlan_id)
+{
+	struct net_device **array;
+
+	array = vg->vlan_devices_arrays[pidx]
+				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+
+	/* paired with smp_wmb() in vlan_group_prealloc_vid() */
+	smp_rmb();
+
+	return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
+}
+
+static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
+						       __be16 vlan_proto,
+						       u16 vlan_id)
+{
+	int pidx = vlan_proto_idx(vlan_proto);
+
+	if (pidx < 0)
+		return NULL;
+
+	return __vlan_group_get_device(vg, pidx, vlan_id);
+}
+
+static inline void vlan_group_set_device(struct vlan_group *vg,
+					 __be16 vlan_proto, u16 vlan_id,
+					 struct net_device *dev)
+{
+	int pidx = vlan_proto_idx(vlan_proto);
+	struct net_device **array;
+
+	if (!vg || pidx < 0)
+		return;
+	array = vg->vlan_devices_arrays[pidx]
+				       [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+	array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
+}
+
+/* Must be invoked with rcu_read_lock or with RTNL. */
+static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
+					       __be16 vlan_proto, u16 vlan_id)
+{
+	struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
+
+	if (vlan_info)
+		return vlan_group_get_device(&vlan_info->grp,
+					     vlan_proto, vlan_id);
+
+	return NULL;
+}
+
+static inline netdev_features_t vlan_tnl_features(struct net_device *real_dev)
+{
+	netdev_features_t ret;
+
+	ret = real_dev->hw_enc_features &
+	      (NETIF_F_CSUM_MASK | NETIF_F_GSO_SOFTWARE |
+	       NETIF_F_GSO_ENCAP_ALL);
+
+	if ((ret & NETIF_F_GSO_ENCAP_ALL) && (ret & NETIF_F_CSUM_MASK))
+		return (ret & ~NETIF_F_CSUM_MASK) | NETIF_F_HW_CSUM;
+	return 0;
+}
+
+#define vlan_group_for_each_dev(grp, i, dev) \
+	for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
+		if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
+							    (i) % VLAN_N_VID)))
+
+int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto);
+void vlan_filter_drop_vids(struct vlan_info *vlan_info, __be16 proto);
+
+/* netdev_work events propagated from the real device, see vlan_dev_work(). */
+enum {
+	VLAN_WORK_LINK_STATE	= BIT(0), /* sync up/down with real_dev */
+	VLAN_WORK_MTU		= BIT(1), /* clamp mtu to real_dev's */
+	VLAN_WORK_FEATURES	= BIT(2), /* re-inherit real_dev features */
+};
+
+void vlan_stacked_transfer_operstate(const struct net_device *rootdev,
+				     struct net_device *dev,
+				     struct vlan_dev_priv *vlan);
+
+/* found in vlan_dev.c */
+void vlan_dev_set_ingress_priority(const struct net_device *dev,
+				   u32 skb_prio, u16 vlan_prio);
+int vlan_dev_set_egress_priority(const struct net_device *dev,
+				 u32 skb_prio, u16 vlan_prio);
+void vlan_dev_free_egress_priority(const struct net_device *dev);
+int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
+void vlan_dev_get_realdev_name(const struct net_device *dev, char *result,
+			       size_t size);
+
+int vlan_check_real_dev(struct net_device *real_dev,
+			__be16 protocol, u16 vlan_id,
+			struct netlink_ext_ack *extack);
+void vlan_setup(struct net_device *dev);
+int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack);
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
+bool vlan_dev_inherit_address(struct net_device *dev,
+			      struct net_device *real_dev);
+
+static inline u32 vlan_get_ingress_priority(struct net_device *dev,
+					    u16 vlan_tci)
+{
+	struct vlan_dev_priv *vip = vlan_dev_priv(dev);
+
+	return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
+}
+
+#ifdef CONFIG_VLAN_8021Q_GVRP
+int vlan_gvrp_request_join(const struct net_device *dev);
+void vlan_gvrp_request_leave(const struct net_device *dev);
+int vlan_gvrp_init_applicant(struct net_device *dev);
+void vlan_gvrp_uninit_applicant(struct net_device *dev);
+int vlan_gvrp_init(void);
+void vlan_gvrp_uninit(void);
+#else
+static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
+static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
+static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
+static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
+static inline int vlan_gvrp_init(void) { return 0; }
+static inline void vlan_gvrp_uninit(void) {}
+#endif
+
+#ifdef CONFIG_VLAN_8021Q_MVRP
+int vlan_mvrp_request_join(const struct net_device *dev);
+void vlan_mvrp_request_leave(const struct net_device *dev);
+int vlan_mvrp_init_applicant(struct net_device *dev);
+void vlan_mvrp_uninit_applicant(struct net_device *dev);
+int vlan_mvrp_init(void);
+void vlan_mvrp_uninit(void);
+#else
+static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
+static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
+static inline int vlan_mvrp_init(void) { return 0; }
+static inline void vlan_mvrp_uninit(void) {}
+#endif
+
+extern const char vlan_fullname[];
+extern const char vlan_version[];
+int vlan_netlink_init(void);
+void vlan_netlink_fini(void);
+
+extern struct rtnl_link_ops vlan_link_ops;
+
+extern unsigned int vlan_net_id;
+
+struct proc_dir_entry;
+
+struct vlan_net {
+	/* /proc/net/vlan */
+	struct proc_dir_entry *proc_vlan_dir;
+	/* /proc/net/vlan/config */
+	struct proc_dir_entry *proc_vlan_conf;
+	/* Determines interface naming scheme. */
+	unsigned short name_type;
+};
+
+#endif /* !(__BEN_VLAN_802_1Q_INC__) */
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
new file mode 100644
index 000000000..d23965e76
--- /dev/null
+++ b/net/8021q/vlan_core.c
@@ -0,0 +1,560 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/netpoll.h>
+#include <linux/export.h>
+#include <net/gro.h>
+#include "vlan.h"
+
+bool vlan_do_receive(struct sk_buff **skbp)
+{
+	struct sk_buff *skb = *skbp;
+	__be16 vlan_proto = skb->vlan_proto;
+	u16 vlan_id = skb_vlan_tag_get_id(skb);
+	struct net_device *vlan_dev;
+	struct vlan_pcpu_stats *rx_stats;
+
+	vlan_dev = vlan_find_dev(skb->dev, vlan_proto, vlan_id);
+	if (!vlan_dev)
+		return false;
+
+	skb = *skbp = skb_share_check(skb, GFP_ATOMIC);
+	if (unlikely(!skb))
+		return false;
+
+	if (unlikely(!(vlan_dev->flags & IFF_UP))) {
+		kfree_skb(skb);
+		*skbp = NULL;
+		return false;
+	}
+
+	skb->dev = vlan_dev;
+	if (unlikely(skb->pkt_type == PACKET_OTHERHOST)) {
+		/* Our lower layer thinks this is not local, let's make sure.
+		 * This allows the VLAN to have a different MAC than the
+		 * underlying device, and still route correctly. */
+		if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, vlan_dev->dev_addr))
+			skb->pkt_type = PACKET_HOST;
+	}
+
+	if (!(vlan_dev_priv(vlan_dev)->flags & VLAN_FLAG_REORDER_HDR) &&
+	    !netif_is_macvlan_port(vlan_dev) &&
+	    !netif_is_bridge_port(vlan_dev)) {
+		unsigned int offset = skb->data - skb_mac_header(skb);
+
+		/*
+		 * vlan_insert_tag expect skb->data pointing to mac header.
+		 * So change skb->data before calling it and change back to
+		 * original position later
+		 */
+		skb_push(skb, offset);
+		skb = *skbp = vlan_insert_inner_tag(skb, skb->vlan_proto,
+						    skb->vlan_tci, skb->mac_len);
+		if (!skb)
+			return false;
+		skb_pull(skb, offset + VLAN_HLEN);
+		skb_reset_mac_len(skb);
+	}
+
+	skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
+	__vlan_hwaccel_clear_tag(skb);
+
+	rx_stats = this_cpu_ptr(vlan_dev_priv(vlan_dev)->vlan_pcpu_stats);
+
+	u64_stats_update_begin(&rx_stats->syncp);
+	u64_stats_inc(&rx_stats->rx_packets);
+	u64_stats_add(&rx_stats->rx_bytes, skb->len);
+	if (skb->pkt_type == PACKET_MULTICAST)
+		u64_stats_inc(&rx_stats->rx_multicast);
+	u64_stats_update_end(&rx_stats->syncp);
+
+	return true;
+}
+
+/* Must be invoked with rcu_read_lock. */
+struct net_device *__vlan_find_dev_deep_rcu(struct net_device *dev,
+					__be16 vlan_proto, u16 vlan_id)
+{
+	struct vlan_info *vlan_info = rcu_dereference(dev->vlan_info);
+
+	if (vlan_info) {
+		return vlan_group_get_device(&vlan_info->grp,
+					     vlan_proto, vlan_id);
+	} else {
+		/*
+		 * Lower devices of master uppers (bonding, team) do not have
+		 * grp assigned to themselves. Grp is assigned to upper device
+		 * instead.
+		 */
+		struct net_device *upper_dev;
+
+		upper_dev = netdev_master_upper_dev_get_rcu(dev);
+		if (upper_dev)
+			return __vlan_find_dev_deep_rcu(upper_dev,
+						    vlan_proto, vlan_id);
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(__vlan_find_dev_deep_rcu);
+
+struct net_device *vlan_dev_real_dev(const struct net_device *dev)
+{
+	struct net_device *ret = vlan_dev_priv(dev)->real_dev;
+
+	while (is_vlan_dev(ret))
+		ret = vlan_dev_priv(ret)->real_dev;
+
+	return ret;
+}
+EXPORT_SYMBOL(vlan_dev_real_dev);
+
+u16 vlan_dev_vlan_id(const struct net_device *dev)
+{
+	return vlan_dev_priv(dev)->vlan_id;
+}
+EXPORT_SYMBOL(vlan_dev_vlan_id);
+
+__be16 vlan_dev_vlan_proto(const struct net_device *dev)
+{
+	return vlan_dev_priv(dev)->vlan_proto;
+}
+EXPORT_SYMBOL(vlan_dev_vlan_proto);
+
+/*
+ * vlan info and vid list
+ */
+
+static void vlan_group_free(struct vlan_group *grp)
+{
+	int i, j;
+
+	for (i = 0; i < VLAN_PROTO_NUM; i++)
+		for (j = 0; j < VLAN_GROUP_ARRAY_SPLIT_PARTS; j++)
+			kfree(grp->vlan_devices_arrays[i][j]);
+}
+
+static void vlan_info_free(struct vlan_info *vlan_info)
+{
+	vlan_group_free(&vlan_info->grp);
+	kfree(vlan_info);
+}
+
+static void vlan_info_rcu_free(struct rcu_head *rcu)
+{
+	vlan_info_free(container_of(rcu, struct vlan_info, rcu));
+}
+
+static struct vlan_info *vlan_info_alloc(struct net_device *dev)
+{
+	struct vlan_info *vlan_info;
+
+	vlan_info = kzalloc_obj(struct vlan_info);
+	if (!vlan_info)
+		return NULL;
+
+	vlan_info->real_dev = dev;
+	INIT_LIST_HEAD(&vlan_info->vid_list);
+	return vlan_info;
+}
+
+struct vlan_vid_info {
+	struct list_head list;
+	__be16 proto;
+	u16 vid;
+	int refcount;
+};
+
+static bool vlan_hw_filter_capable(const struct net_device *dev, __be16 proto)
+{
+	if (proto == htons(ETH_P_8021Q) &&
+	    dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
+		return true;
+	if (proto == htons(ETH_P_8021AD) &&
+	    dev->features & NETIF_F_HW_VLAN_STAG_FILTER)
+		return true;
+	return false;
+}
+
+static struct vlan_vid_info *vlan_vid_info_get(struct vlan_info *vlan_info,
+					       __be16 proto, u16 vid)
+{
+	struct vlan_vid_info *vid_info;
+
+	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
+		if (vid_info->proto == proto && vid_info->vid == vid)
+			return vid_info;
+	}
+	return NULL;
+}
+
+static struct vlan_vid_info *vlan_vid_info_alloc(__be16 proto, u16 vid)
+{
+	struct vlan_vid_info *vid_info;
+
+	vid_info = kzalloc_obj(struct vlan_vid_info);
+	if (!vid_info)
+		return NULL;
+	vid_info->proto = proto;
+	vid_info->vid = vid;
+
+	return vid_info;
+}
+
+static int vlan_add_rx_filter_info(struct net_device *dev, __be16 proto, u16 vid)
+{
+	if (!vlan_hw_filter_capable(dev, proto))
+		return 0;
+
+	if (netif_device_present(dev))
+		return dev->netdev_ops->ndo_vlan_rx_add_vid(dev, proto, vid);
+	else
+		return -ENODEV;
+}
+
+static int vlan_kill_rx_filter_info(struct net_device *dev, __be16 proto, u16 vid)
+{
+	if (!vlan_hw_filter_capable(dev, proto))
+		return 0;
+
+	if (netif_device_present(dev))
+		return dev->netdev_ops->ndo_vlan_rx_kill_vid(dev, proto, vid);
+	else
+		return -ENODEV;
+}
+
+int vlan_for_each(struct net_device *dev,
+		  int (*action)(struct net_device *dev, int vid, void *arg),
+		  void *arg)
+{
+	struct vlan_vid_info *vid_info;
+	struct vlan_info *vlan_info;
+	struct net_device *vdev;
+	int ret;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	if (!vlan_info)
+		return 0;
+
+	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
+		vdev = vlan_group_get_device(&vlan_info->grp, vid_info->proto,
+					     vid_info->vid);
+		ret = action(vdev, vid_info->vid, arg);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(vlan_for_each);
+
+int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto)
+{
+	struct net_device *real_dev = vlan_info->real_dev;
+	struct vlan_vid_info *vlan_vid_info;
+	int err;
+
+	list_for_each_entry(vlan_vid_info, &vlan_info->vid_list, list) {
+		if (vlan_vid_info->proto == proto) {
+			err = vlan_add_rx_filter_info(real_dev, proto,
+						      vlan_vid_info->vid);
+			if (err)
+				goto unwind;
+		}
+	}
+
+	return 0;
+
+unwind:
+	list_for_each_entry_continue_reverse(vlan_vid_info,
+					     &vlan_info->vid_list, list) {
+		if (vlan_vid_info->proto == proto)
+			vlan_kill_rx_filter_info(real_dev, proto,
+						 vlan_vid_info->vid);
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(vlan_filter_push_vids);
+
+void vlan_filter_drop_vids(struct vlan_info *vlan_info, __be16 proto)
+{
+	struct vlan_vid_info *vlan_vid_info;
+
+	list_for_each_entry(vlan_vid_info, &vlan_info->vid_list, list)
+		if (vlan_vid_info->proto == proto)
+			vlan_kill_rx_filter_info(vlan_info->real_dev,
+						 vlan_vid_info->proto,
+						 vlan_vid_info->vid);
+}
+EXPORT_SYMBOL(vlan_filter_drop_vids);
+
+static int __vlan_vid_add(struct vlan_info *vlan_info, __be16 proto, u16 vid,
+			  struct vlan_vid_info **pvid_info)
+{
+	struct net_device *dev = vlan_info->real_dev;
+	struct vlan_vid_info *vid_info;
+	int err;
+
+	vid_info = vlan_vid_info_alloc(proto, vid);
+	if (!vid_info)
+		return -ENOMEM;
+
+	err = vlan_add_rx_filter_info(dev, proto, vid);
+	if (err) {
+		kfree(vid_info);
+		return err;
+	}
+
+	list_add(&vid_info->list, &vlan_info->vid_list);
+	vlan_info->nr_vids++;
+	*pvid_info = vid_info;
+	return 0;
+}
+
+int vlan_vid_add(struct net_device *dev, __be16 proto, u16 vid)
+{
+	struct vlan_info *vlan_info;
+	struct vlan_vid_info *vid_info;
+	bool vlan_info_created = false;
+	int err;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	if (!vlan_info) {
+		vlan_info = vlan_info_alloc(dev);
+		if (!vlan_info)
+			return -ENOMEM;
+		vlan_info_created = true;
+	}
+	vid_info = vlan_vid_info_get(vlan_info, proto, vid);
+	if (!vid_info) {
+		err = __vlan_vid_add(vlan_info, proto, vid, &vid_info);
+		if (err)
+			goto out_free_vlan_info;
+	}
+	vid_info->refcount++;
+
+	if (vlan_info_created)
+		rcu_assign_pointer(dev->vlan_info, vlan_info);
+
+	return 0;
+
+out_free_vlan_info:
+	if (vlan_info_created)
+		kfree(vlan_info);
+	return err;
+}
+EXPORT_SYMBOL(vlan_vid_add);
+
+static void __vlan_vid_del(struct vlan_info *vlan_info,
+			   struct vlan_vid_info *vid_info)
+{
+	struct net_device *dev = vlan_info->real_dev;
+	__be16 proto = vid_info->proto;
+	u16 vid = vid_info->vid;
+	int err;
+
+	err = vlan_kill_rx_filter_info(dev, proto, vid);
+	if (err && dev->reg_state != NETREG_UNREGISTERING)
+		netdev_warn(dev, "failed to kill vid %04x/%d\n", proto, vid);
+
+	list_del(&vid_info->list);
+	kfree(vid_info);
+	vlan_info->nr_vids--;
+}
+
+void vlan_vid_del(struct net_device *dev, __be16 proto, u16 vid)
+{
+	struct vlan_info *vlan_info;
+	struct vlan_vid_info *vid_info;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	if (!vlan_info)
+		return;
+
+	vid_info = vlan_vid_info_get(vlan_info, proto, vid);
+	if (!vid_info)
+		return;
+	vid_info->refcount--;
+	if (vid_info->refcount == 0) {
+		__vlan_vid_del(vlan_info, vid_info);
+		if (vlan_info->nr_vids == 0) {
+			RCU_INIT_POINTER(dev->vlan_info, NULL);
+			call_rcu(&vlan_info->rcu, vlan_info_rcu_free);
+		}
+	}
+}
+EXPORT_SYMBOL(vlan_vid_del);
+
+int vlan_vids_add_by_dev(struct net_device *dev,
+			 const struct net_device *by_dev)
+{
+	struct vlan_vid_info *vid_info;
+	struct vlan_info *vlan_info;
+	int err;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(by_dev->vlan_info);
+	if (!vlan_info)
+		return 0;
+
+	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
+		if (!vlan_hw_filter_capable(by_dev, vid_info->proto))
+			continue;
+		err = vlan_vid_add(dev, vid_info->proto, vid_info->vid);
+		if (err)
+			goto unwind;
+	}
+	return 0;
+
+unwind:
+	list_for_each_entry_continue_reverse(vid_info,
+					     &vlan_info->vid_list,
+					     list) {
+		if (!vlan_hw_filter_capable(by_dev, vid_info->proto))
+			continue;
+		vlan_vid_del(dev, vid_info->proto, vid_info->vid);
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(vlan_vids_add_by_dev);
+
+void vlan_vids_del_by_dev(struct net_device *dev,
+			  const struct net_device *by_dev)
+{
+	struct vlan_vid_info *vid_info;
+	struct vlan_info *vlan_info;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(by_dev->vlan_info);
+	if (!vlan_info)
+		return;
+
+	list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
+		if (!vlan_hw_filter_capable(by_dev, vid_info->proto))
+			continue;
+		vlan_vid_del(dev, vid_info->proto, vid_info->vid);
+	}
+}
+EXPORT_SYMBOL(vlan_vids_del_by_dev);
+
+bool vlan_uses_dev(const struct net_device *dev)
+{
+	struct vlan_info *vlan_info;
+
+	ASSERT_RTNL();
+
+	vlan_info = rtnl_dereference(dev->vlan_info);
+	if (!vlan_info)
+		return false;
+	return vlan_info->grp.nr_vlan_devs ? true : false;
+}
+EXPORT_SYMBOL(vlan_uses_dev);
+
+static struct sk_buff *vlan_gro_receive(struct list_head *head,
+					struct sk_buff *skb)
+{
+	const struct packet_offload *ptype;
+	unsigned int hlen, off_vlan;
+	struct sk_buff *pp = NULL;
+	struct vlan_hdr *vhdr;
+	struct sk_buff *p;
+	__be16 type;
+	int flush = 1;
+
+	off_vlan = skb_gro_offset(skb);
+	hlen = off_vlan + sizeof(*vhdr);
+	vhdr = skb_gro_header(skb, hlen, off_vlan);
+	if (unlikely(!vhdr))
+		goto out;
+
+	NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = hlen;
+
+	type = vhdr->h_vlan_encapsulated_proto;
+
+	ptype = gro_find_receive_by_type(type);
+	if (!ptype)
+		goto out;
+
+	flush = 0;
+
+	list_for_each_entry(p, head, list) {
+		struct vlan_hdr *vhdr2;
+
+		if (!NAPI_GRO_CB(p)->same_flow)
+			continue;
+
+		vhdr2 = (struct vlan_hdr *)(p->data + off_vlan);
+		if (compare_vlan_header(vhdr, vhdr2))
+			NAPI_GRO_CB(p)->same_flow = 0;
+	}
+
+	skb_gro_pull(skb, sizeof(*vhdr));
+	skb_gro_postpull_rcsum(skb, vhdr, sizeof(*vhdr));
+
+	pp = indirect_call_gro_receive_inet(ptype->callbacks.gro_receive,
+					    ipv6_gro_receive, inet_gro_receive,
+					    head, skb);
+
+out:
+	skb_gro_flush_final(skb, pp, flush);
+
+	return pp;
+}
+
+static int vlan_gro_complete(struct sk_buff *skb, int nhoff)
+{
+	struct vlan_hdr *vhdr = (struct vlan_hdr *)(skb->data + nhoff);
+	__be16 type = vhdr->h_vlan_encapsulated_proto;
+	struct packet_offload *ptype;
+	int err = -ENOENT;
+
+	ptype = gro_find_complete_by_type(type);
+	if (ptype)
+		err = INDIRECT_CALL_INET(ptype->callbacks.gro_complete,
+					 ipv6_gro_complete, inet_gro_complete,
+					 skb, nhoff + sizeof(*vhdr));
+
+	return err;
+}
+
+static struct packet_offload vlan_packet_offloads[] __read_mostly = {
+	{
+		.type = cpu_to_be16(ETH_P_8021Q),
+		.priority = 10,
+		.callbacks = {
+			.gro_receive = vlan_gro_receive,
+			.gro_complete = vlan_gro_complete,
+		},
+	},
+	{
+		.type = cpu_to_be16(ETH_P_8021AD),
+		.priority = 10,
+		.callbacks = {
+			.gro_receive = vlan_gro_receive,
+			.gro_complete = vlan_gro_complete,
+		},
+	},
+};
+
+static int __init vlan_offload_init(void)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(vlan_packet_offloads); i++)
+		dev_add_offload(&vlan_packet_offloads[i]);
+
+	return 0;
+}
+
+fs_initcall(vlan_offload_init);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
new file mode 100644
index 000000000..ec2569b3f
--- /dev/null
+++ b/net/8021q/vlan_dev.c
@@ -0,0 +1,1147 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* -*- linux-c -*-
+ * INET		802.1Q VLAN
+ *		Ethernet-type device handling.
+ *
+ * Authors:	Ben Greear <greearb@candelatech.com>
+ *              Please send support related email to: netdev@vger.kernel.org
+ *              VLAN Home Page: http://www.candelatech.com/~greear/vlan.html
+ *
+ * Fixes:       Mar 22 2001: Martin Bokaemper <mbokaemper@unispherenetworks.com>
+ *                - reset skb->pkt_type on incoming packets when MAC was changed
+ *                - see that changed MAC is saddr for outgoing packets
+ *              Oct 20, 2001:  Ard van Breeman:
+ *                - Fix MC-list, finally.
+ *                - Flush MC-list on VLAN destroy.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <net/arp.h>
+#include <net/macsec.h>
+#include <net/netdev_lock.h>
+
+#include "vlan.h"
+#include "vlanproc.h"
+#include <linux/if_vlan.h>
+#include <linux/netpoll.h>
+
+/*
+ *	Create the VLAN header for an arbitrary protocol layer
+ *
+ *	saddr=NULL	means use device source address
+ *	daddr=NULL	means leave destination address (eg unresolved arp)
+ *
+ *  This is called when the SKB is moving down the stack towards the
+ *  physical devices.
+ */
+static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
+				unsigned short type,
+				const void *daddr, const void *saddr,
+				unsigned int len)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct vlan_hdr *vhdr;
+	unsigned int vhdrlen = 0;
+	u16 vlan_tci = 0;
+	int rc;
+
+	if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
+		vhdr = skb_push(skb, VLAN_HLEN);
+
+		vlan_tci = vlan->vlan_id;
+		vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
+		vhdr->h_vlan_TCI = htons(vlan_tci);
+
+		/*
+		 *  Set the protocol type. For a packet of type ETH_P_802_3/2 we
+		 *  put the length in here instead.
+		 */
+		if (type != ETH_P_802_3 && type != ETH_P_802_2)
+			vhdr->h_vlan_encapsulated_proto = htons(type);
+		else
+			vhdr->h_vlan_encapsulated_proto = htons(len);
+
+		skb->protocol = vlan->vlan_proto;
+		type = ntohs(vlan->vlan_proto);
+		vhdrlen = VLAN_HLEN;
+	}
+
+	/* Before delegating work to the lower layer, enter our MAC-address */
+	if (saddr == NULL)
+		saddr = dev->dev_addr;
+
+	/* Now make the underlying real hard header */
+	dev = vlan->real_dev;
+	rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
+	if (rc > 0)
+		rc += vhdrlen;
+	return rc;
+}
+
+static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
+{
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	return netpoll_send_skb(vlan->netpoll, skb);
+#else
+	BUG();
+	return NETDEV_TX_OK;
+#endif
+}
+
+static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
+					    struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
+	unsigned int len;
+	int ret;
+
+	/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
+	 *
+	 * NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
+	 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
+	 */
+	if (vlan->flags & VLAN_FLAG_REORDER_HDR ||
+	    veth->h_vlan_proto != vlan->vlan_proto) {
+		u16 vlan_tci;
+		vlan_tci = vlan->vlan_id;
+		vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb->priority);
+		__vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
+	}
+
+	skb->dev = vlan->real_dev;
+	len = skb->len;
+	if (unlikely(netpoll_tx_running(dev)))
+		return vlan_netpoll_send_skb(vlan, skb);
+
+	ret = dev_queue_xmit(skb);
+
+	if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
+		struct vlan_pcpu_stats *stats;
+
+		stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
+		u64_stats_update_begin(&stats->syncp);
+		u64_stats_inc(&stats->tx_packets);
+		u64_stats_add(&stats->tx_bytes, len);
+		u64_stats_update_end(&stats->syncp);
+	} else {
+		this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
+	}
+
+	return ret;
+}
+
+static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	unsigned int max_mtu = real_dev->mtu;
+
+	if (netif_reduces_vlan_mtu(real_dev))
+		max_mtu -= VLAN_HLEN;
+	if (max_mtu < new_mtu)
+		return -ERANGE;
+
+	WRITE_ONCE(dev->mtu, new_mtu);
+
+	return 0;
+}
+
+void vlan_dev_set_ingress_priority(const struct net_device *dev,
+				   u32 skb_prio, u16 vlan_prio)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+	if (vlan->ingress_priority_map[vlan_prio & 0x7] && !skb_prio)
+		vlan->nr_ingress_mappings--;
+	else if (!vlan->ingress_priority_map[vlan_prio & 0x7] && skb_prio)
+		vlan->nr_ingress_mappings++;
+
+	vlan->ingress_priority_map[vlan_prio & 0x7] = skb_prio;
+}
+
+int vlan_dev_set_egress_priority(const struct net_device *dev,
+				 u32 skb_prio, u16 vlan_prio)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct vlan_priority_tci_mapping __rcu **mpp;
+	struct vlan_priority_tci_mapping *mp;
+	struct vlan_priority_tci_mapping *np;
+	u32 bucket = skb_prio & 0xF;
+	u32 vlan_qos = (vlan_prio << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
+
+	/* See if a priority mapping exists.. */
+	mpp = &vlan->egress_priority_map[bucket];
+	mp = rtnl_dereference(*mpp);
+	while (mp) {
+		if (mp->priority == skb_prio) {
+			if (!vlan_qos) {
+				rcu_assign_pointer(*mpp, rtnl_dereference(mp->next));
+				vlan->nr_egress_mappings--;
+				kfree_rcu(mp, rcu);
+			} else {
+				WRITE_ONCE(mp->vlan_qos, vlan_qos);
+			}
+			return 0;
+		}
+		mpp = &mp->next;
+		mp = rtnl_dereference(*mpp);
+	}
+
+	/* Create a new mapping then. */
+	if (!vlan_qos)
+		return 0;
+
+	np = kmalloc_obj(struct vlan_priority_tci_mapping);
+	if (!np)
+		return -ENOBUFS;
+
+	np->priority = skb_prio;
+	np->vlan_qos = vlan_qos;
+	RCU_INIT_POINTER(np->next, rtnl_dereference(vlan->egress_priority_map[bucket]));
+	rcu_assign_pointer(vlan->egress_priority_map[bucket], np);
+	if (vlan_qos)
+		vlan->nr_egress_mappings++;
+	return 0;
+}
+
+/* Flags are defined in the vlan_flags enum in
+ * include/uapi/linux/if_vlan.h file.
+ */
+int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	u32 old_flags = vlan->flags;
+
+	if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
+		     VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP |
+		     VLAN_FLAG_BRIDGE_BINDING))
+		return -EINVAL;
+
+	vlan->flags = (old_flags & ~mask) | (flags & mask);
+
+	if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
+		if (vlan->flags & VLAN_FLAG_GVRP)
+			vlan_gvrp_request_join(dev);
+		else
+			vlan_gvrp_request_leave(dev);
+	}
+
+	if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
+		if (vlan->flags & VLAN_FLAG_MVRP)
+			vlan_mvrp_request_join(dev);
+		else
+			vlan_mvrp_request_leave(dev);
+	}
+	return 0;
+}
+
+void vlan_dev_get_realdev_name(const struct net_device *dev, char *result, size_t size)
+{
+	strscpy_pad(result, vlan_dev_priv(dev)->real_dev->name, size);
+}
+
+bool vlan_dev_inherit_address(struct net_device *dev,
+			      struct net_device *real_dev)
+{
+	if (dev->addr_assign_type != NET_ADDR_STOLEN)
+		return false;
+
+	eth_hw_addr_set(dev, real_dev->dev_addr);
+	call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	return true;
+}
+
+static int vlan_dev_open(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+	int err;
+
+	if (!(real_dev->flags & IFF_UP) &&
+	    !(vlan->flags & VLAN_FLAG_LOOSE_BINDING))
+		return -ENETDOWN;
+
+	/* The explicit open supersedes any deferred link-state sync */
+	netdev_work_cancel(dev, VLAN_WORK_LINK_STATE);
+
+	if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr) &&
+	    !vlan_dev_inherit_address(dev, real_dev)) {
+		err = dev_uc_add(real_dev, dev->dev_addr);
+		if (err < 0)
+			goto out;
+	}
+
+	ether_addr_copy(vlan->real_dev_addr, real_dev->dev_addr);
+
+	if (vlan->flags & VLAN_FLAG_GVRP)
+		vlan_gvrp_request_join(dev);
+
+	if (vlan->flags & VLAN_FLAG_MVRP)
+		vlan_mvrp_request_join(dev);
+
+	if (netif_carrier_ok(real_dev) &&
+	    !(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
+		netif_carrier_on(dev);
+	return 0;
+
+out:
+	netif_carrier_off(dev);
+	return err;
+}
+
+static int vlan_dev_stop(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+
+	/* The explicit close supersedes any deferred link-state sync */
+	netdev_work_cancel(dev, VLAN_WORK_LINK_STATE);
+
+	dev_mc_unsync(real_dev, dev);
+	dev_uc_unsync(real_dev, dev);
+
+	if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
+		dev_uc_del(real_dev, dev->dev_addr);
+
+	if (!(vlan->flags & VLAN_FLAG_BRIDGE_BINDING))
+		netif_carrier_off(dev);
+	return 0;
+}
+
+static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	struct sockaddr *addr = p;
+	int err;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	if (!(dev->flags & IFF_UP))
+		goto out;
+
+	if (!ether_addr_equal(addr->sa_data, real_dev->dev_addr)) {
+		err = dev_uc_add(real_dev, addr->sa_data);
+		if (err < 0)
+			return err;
+	}
+
+	if (!ether_addr_equal(dev->dev_addr, real_dev->dev_addr))
+		dev_uc_del(real_dev, dev->dev_addr);
+
+out:
+	eth_hw_addr_set(dev, addr->sa_data);
+	return 0;
+}
+
+static int vlan_hwtstamp_get(struct net_device *dev,
+			     struct kernel_hwtstamp_config *cfg)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	return generic_hwtstamp_get_lower(real_dev, cfg);
+}
+
+static int vlan_hwtstamp_set(struct net_device *dev,
+			     struct kernel_hwtstamp_config *cfg,
+			     struct netlink_ext_ack *extack)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	if (!net_eq(dev_net(dev), dev_net(real_dev)))
+		return -EOPNOTSUPP;
+
+	return generic_hwtstamp_set_lower(real_dev, cfg, extack);
+}
+
+static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	struct ifreq ifrr;
+	int err = -EOPNOTSUPP;
+
+	strscpy_pad(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
+	ifrr.ifr_ifru = ifr->ifr_ifru;
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		err = dev_eth_ioctl(real_dev, &ifrr, cmd);
+		break;
+	}
+
+	if (!err)
+		ifr->ifr_ifru = ifrr.ifr_ifru;
+
+	return err;
+}
+
+static int vlan_dev_neigh_setup(struct net_device *dev, struct neigh_parms *pa)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int err = 0;
+
+	if (netif_device_present(real_dev) && ops->ndo_neigh_setup)
+		err = ops->ndo_neigh_setup(real_dev, pa);
+
+	return err;
+}
+
+#if IS_ENABLED(CONFIG_FCOE)
+static int vlan_dev_fcoe_ddp_setup(struct net_device *dev, u16 xid,
+				   struct scatterlist *sgl, unsigned int sgc)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int rc = 0;
+
+	if (ops->ndo_fcoe_ddp_setup)
+		rc = ops->ndo_fcoe_ddp_setup(real_dev, xid, sgl, sgc);
+
+	return rc;
+}
+
+static int vlan_dev_fcoe_ddp_done(struct net_device *dev, u16 xid)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int len = 0;
+
+	if (ops->ndo_fcoe_ddp_done)
+		len = ops->ndo_fcoe_ddp_done(real_dev, xid);
+
+	return len;
+}
+
+static int vlan_dev_fcoe_enable(struct net_device *dev)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int rc = -EINVAL;
+
+	if (ops->ndo_fcoe_enable)
+		rc = ops->ndo_fcoe_enable(real_dev);
+	return rc;
+}
+
+static int vlan_dev_fcoe_disable(struct net_device *dev)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int rc = -EINVAL;
+
+	if (ops->ndo_fcoe_disable)
+		rc = ops->ndo_fcoe_disable(real_dev);
+	return rc;
+}
+
+static int vlan_dev_fcoe_ddp_target(struct net_device *dev, u16 xid,
+				    struct scatterlist *sgl, unsigned int sgc)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int rc = 0;
+
+	if (ops->ndo_fcoe_ddp_target)
+		rc = ops->ndo_fcoe_ddp_target(real_dev, xid, sgl, sgc);
+
+	return rc;
+}
+#endif
+
+#ifdef NETDEV_FCOE_WWNN
+static int vlan_dev_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	const struct net_device_ops *ops = real_dev->netdev_ops;
+	int rc = -EINVAL;
+
+	if (ops->ndo_fcoe_get_wwn)
+		rc = ops->ndo_fcoe_get_wwn(real_dev, wwn, type);
+	return rc;
+}
+#endif
+
+static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	if (change & IFF_ALLMULTI)
+		dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
+	if (change & IFF_PROMISC)
+		dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
+}
+
+static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
+{
+	dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
+	dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
+}
+
+static __be16 vlan_parse_protocol(const struct sk_buff *skb)
+{
+	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
+
+	return __vlan_get_protocol(skb, veth->h_vlan_proto, NULL);
+}
+
+static const struct header_ops vlan_header_ops = {
+	.create	 = vlan_dev_hard_header,
+	.parse	 = eth_header_parse,
+	.parse_protocol = vlan_parse_protocol,
+};
+
+static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev,
+				     unsigned short type,
+				     const void *daddr, const void *saddr,
+				     unsigned int len)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+
+	if (saddr == NULL)
+		saddr = dev->dev_addr;
+
+	return dev_hard_header(skb, real_dev, type, daddr, saddr, len);
+}
+
+static const struct header_ops vlan_passthru_header_ops = {
+	.create	 = vlan_passthru_hard_header,
+	.parse	 = eth_header_parse,
+	.parse_protocol = vlan_parse_protocol,
+};
+
+static const struct device_type vlan_type = {
+	.name	= "vlan",
+};
+
+static const struct net_device_ops vlan_netdev_ops;
+
+static int vlan_dev_init(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+
+	netif_carrier_off(dev);
+
+	/* IFF_BROADCAST|IFF_MULTICAST; ??? */
+	dev->flags  = real_dev->flags & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
+					  IFF_MASTER | IFF_SLAVE);
+	dev->state  = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
+					  (1<<__LINK_STATE_DORMANT))) |
+		      (1<<__LINK_STATE_PRESENT);
+
+	if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING)
+		dev->state |= (1 << __LINK_STATE_NOCARRIER);
+
+	dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG |
+			   NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
+			   NETIF_F_GSO_ENCAP_ALL |
+			   NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC |
+			   NETIF_F_FCOE_CRC | NETIF_F_FSO;
+
+	if (real_dev->vlan_features & NETIF_F_HW_MACSEC)
+		dev->hw_features |= NETIF_F_HW_MACSEC;
+
+	dev->features |= dev->hw_features;
+	dev->lltx = true;
+	dev->fcoe_mtu = true;
+	netif_inherit_tso_max(dev, real_dev);
+	if (dev->features & NETIF_F_VLAN_FEATURES)
+		netdev_warn(real_dev, "VLAN features are set incorrectly.  Q-in-Q configurations may not work correctly.\n");
+
+	dev->vlan_features = real_dev->vlan_features &
+			     ~(NETIF_F_FCOE_CRC | NETIF_F_FSO);
+	dev->hw_enc_features = vlan_tnl_features(real_dev);
+	dev->mpls_features = real_dev->mpls_features;
+
+	/* ipv6 shared card related stuff */
+	dev->dev_id = real_dev->dev_id;
+
+	if (is_zero_ether_addr(dev->dev_addr)) {
+		eth_hw_addr_set(dev, real_dev->dev_addr);
+		dev->addr_assign_type = NET_ADDR_STOLEN;
+	}
+	if (is_zero_ether_addr(dev->broadcast))
+		memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
+
+#if IS_ENABLED(CONFIG_FCOE)
+	dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
+#endif
+
+	dev->needed_headroom = real_dev->needed_headroom;
+	if (vlan_hw_offload_capable(real_dev->features, vlan->vlan_proto)) {
+		dev->header_ops      = &vlan_passthru_header_ops;
+		dev->hard_header_len = real_dev->hard_header_len;
+	} else {
+		dev->header_ops      = &vlan_header_ops;
+		dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
+	}
+
+	dev->netdev_ops = &vlan_netdev_ops;
+
+	SET_NETDEV_DEVTYPE(dev, &vlan_type);
+
+	netdev_lockdep_set_classes(dev);
+
+	vlan->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
+	if (!vlan->vlan_pcpu_stats)
+		return -ENOMEM;
+
+	/* Get vlan's reference to real_dev */
+	netdev_hold(real_dev, &vlan->dev_tracker, GFP_KERNEL);
+
+	return 0;
+}
+
+/* Note: this function might be called multiple times for the same device. */
+void vlan_dev_free_egress_priority(const struct net_device *dev)
+{
+	struct vlan_priority_tci_mapping *pm;
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
+		pm = rtnl_dereference(vlan->egress_priority_map[i]);
+		RCU_INIT_POINTER(vlan->egress_priority_map[i], NULL);
+		while (pm) {
+			struct vlan_priority_tci_mapping *next;
+
+			next = rtnl_dereference(pm->next);
+			kfree_rcu(pm, rcu);
+			pm = next;
+		}
+	}
+	vlan->nr_egress_mappings = 0;
+}
+
+static void vlan_dev_uninit(struct net_device *dev)
+{
+	vlan_dev_free_egress_priority(dev);
+}
+
+static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
+	netdev_features_t features)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+	netdev_features_t old_features = features;
+	netdev_features_t lower_features;
+
+	lower_features = netdev_intersect_features((real_dev->vlan_features |
+						    NETIF_F_RXCSUM),
+						   real_dev->features);
+
+	/* Add HW_CSUM setting to preserve user ability to control
+	 * checksum offload on the vlan device.
+	 */
+	if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+		lower_features |= NETIF_F_HW_CSUM;
+	features = netdev_intersect_features(features, lower_features);
+	features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
+
+	return features;
+}
+
+static int vlan_ethtool_get_link_ksettings(struct net_device *dev,
+					   struct ethtool_link_ksettings *cmd)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+	return __ethtool_get_link_ksettings(vlan->real_dev, cmd);
+}
+
+static void vlan_ethtool_get_drvinfo(struct net_device *dev,
+				     struct ethtool_drvinfo *info)
+{
+	strscpy(info->driver, vlan_fullname, sizeof(info->driver));
+	strscpy(info->version, vlan_version, sizeof(info->version));
+	strscpy(info->fw_version, "N/A", sizeof(info->fw_version));
+}
+
+static int vlan_ethtool_get_ts_info(struct net_device *dev,
+				    struct kernel_ethtool_ts_info *info)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	return ethtool_get_ts_info_by_layer(vlan->real_dev, info);
+}
+
+static void vlan_dev_get_stats64(struct net_device *dev,
+				 struct rtnl_link_stats64 *stats)
+{
+	struct vlan_pcpu_stats *p;
+	u32 rx_errors = 0, tx_dropped = 0;
+	int i;
+
+	for_each_possible_cpu(i) {
+		u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
+		unsigned int start;
+
+		p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
+		do {
+			start = u64_stats_fetch_begin(&p->syncp);
+			rxpackets	= u64_stats_read(&p->rx_packets);
+			rxbytes		= u64_stats_read(&p->rx_bytes);
+			rxmulticast	= u64_stats_read(&p->rx_multicast);
+			txpackets	= u64_stats_read(&p->tx_packets);
+			txbytes		= u64_stats_read(&p->tx_bytes);
+		} while (u64_stats_fetch_retry(&p->syncp, start));
+
+		stats->rx_packets	+= rxpackets;
+		stats->rx_bytes		+= rxbytes;
+		stats->multicast	+= rxmulticast;
+		stats->tx_packets	+= txpackets;
+		stats->tx_bytes		+= txbytes;
+		/* rx_errors & tx_dropped are u32 */
+		rx_errors	+= READ_ONCE(p->rx_errors);
+		tx_dropped	+= READ_ONCE(p->tx_dropped);
+	}
+	stats->rx_errors  = rx_errors;
+	stats->tx_dropped = tx_dropped;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void vlan_dev_poll_controller(struct net_device *dev)
+{
+	return;
+}
+
+static int vlan_dev_netpoll_setup(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct net_device *real_dev = vlan->real_dev;
+	struct netpoll *netpoll;
+	int err = 0;
+
+	netpoll = kzalloc_obj(*netpoll);
+	err = -ENOMEM;
+	if (!netpoll)
+		goto out;
+
+	err = __netpoll_setup(netpoll, real_dev);
+	if (err) {
+		kfree(netpoll);
+		goto out;
+	}
+
+	vlan->netpoll = netpoll;
+
+out:
+	return err;
+}
+
+static void vlan_dev_netpoll_cleanup(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
+	struct netpoll *netpoll = vlan->netpoll;
+
+	if (!netpoll)
+		return;
+
+	vlan->netpoll = NULL;
+	__netpoll_free(netpoll);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+static int vlan_dev_get_iflink(const struct net_device *dev)
+{
+	const struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	return READ_ONCE(real_dev->ifindex);
+}
+
+static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx,
+				      struct net_device_path *path)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(ctx->dev);
+
+	path->type = DEV_PATH_VLAN;
+	path->encap.id = vlan->vlan_id;
+	path->encap.proto = vlan->vlan_proto;
+	path->dev = ctx->dev;
+	ctx->dev = vlan->real_dev;
+	if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan))
+		return -ENOSPC;
+
+	ctx->vlan[ctx->num_vlans].id = vlan->vlan_id;
+	ctx->vlan[ctx->num_vlans].proto = vlan->vlan_proto;
+	ctx->num_vlans++;
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_MACSEC)
+
+static const struct macsec_ops *vlan_get_macsec_ops(const struct macsec_context *ctx)
+{
+	return vlan_dev_priv(ctx->netdev)->real_dev->macsec_ops;
+}
+
+static int vlan_macsec_offload(int (* const func)(struct macsec_context *),
+			       struct macsec_context *ctx)
+{
+	if (unlikely(!func))
+		return 0;
+
+	return (*func)(ctx);
+}
+
+static int vlan_macsec_dev_open(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_dev_open, ctx);
+}
+
+static int vlan_macsec_dev_stop(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_dev_stop, ctx);
+}
+
+static int vlan_macsec_add_secy(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_add_secy, ctx);
+}
+
+static int vlan_macsec_upd_secy(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_upd_secy, ctx);
+}
+
+static int vlan_macsec_del_secy(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_del_secy, ctx);
+}
+
+static int vlan_macsec_add_rxsc(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_add_rxsc, ctx);
+}
+
+static int vlan_macsec_upd_rxsc(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_upd_rxsc, ctx);
+}
+
+static int vlan_macsec_del_rxsc(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_del_rxsc, ctx);
+}
+
+static int vlan_macsec_add_rxsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_add_rxsa, ctx);
+}
+
+static int vlan_macsec_upd_rxsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_upd_rxsa, ctx);
+}
+
+static int vlan_macsec_del_rxsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_del_rxsa, ctx);
+}
+
+static int vlan_macsec_add_txsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_add_txsa, ctx);
+}
+
+static int vlan_macsec_upd_txsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_upd_txsa, ctx);
+}
+
+static int vlan_macsec_del_txsa(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_del_txsa, ctx);
+}
+
+static int vlan_macsec_get_dev_stats(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_get_dev_stats, ctx);
+}
+
+static int vlan_macsec_get_tx_sc_stats(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_get_tx_sc_stats, ctx);
+}
+
+static int vlan_macsec_get_tx_sa_stats(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_get_tx_sa_stats, ctx);
+}
+
+static int vlan_macsec_get_rx_sc_stats(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_get_rx_sc_stats, ctx);
+}
+
+static int vlan_macsec_get_rx_sa_stats(struct macsec_context *ctx)
+{
+	const struct macsec_ops *ops = vlan_get_macsec_ops(ctx);
+
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	return vlan_macsec_offload(ops->mdo_get_rx_sa_stats, ctx);
+}
+
+static const struct macsec_ops macsec_offload_ops = {
+	/* Device wide */
+	.mdo_dev_open = vlan_macsec_dev_open,
+	.mdo_dev_stop = vlan_macsec_dev_stop,
+	/* SecY */
+	.mdo_add_secy = vlan_macsec_add_secy,
+	.mdo_upd_secy = vlan_macsec_upd_secy,
+	.mdo_del_secy = vlan_macsec_del_secy,
+	/* Security channels */
+	.mdo_add_rxsc = vlan_macsec_add_rxsc,
+	.mdo_upd_rxsc = vlan_macsec_upd_rxsc,
+	.mdo_del_rxsc = vlan_macsec_del_rxsc,
+	/* Security associations */
+	.mdo_add_rxsa = vlan_macsec_add_rxsa,
+	.mdo_upd_rxsa = vlan_macsec_upd_rxsa,
+	.mdo_del_rxsa = vlan_macsec_del_rxsa,
+	.mdo_add_txsa = vlan_macsec_add_txsa,
+	.mdo_upd_txsa = vlan_macsec_upd_txsa,
+	.mdo_del_txsa = vlan_macsec_del_txsa,
+	/* Statistics */
+	.mdo_get_dev_stats = vlan_macsec_get_dev_stats,
+	.mdo_get_tx_sc_stats = vlan_macsec_get_tx_sc_stats,
+	.mdo_get_tx_sa_stats = vlan_macsec_get_tx_sa_stats,
+	.mdo_get_rx_sc_stats = vlan_macsec_get_rx_sc_stats,
+	.mdo_get_rx_sa_stats = vlan_macsec_get_rx_sa_stats,
+};
+
+#endif
+
+static const struct ethtool_ops vlan_ethtool_ops = {
+	.get_link_ksettings	= vlan_ethtool_get_link_ksettings,
+	.get_drvinfo	        = vlan_ethtool_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_ts_info		= vlan_ethtool_get_ts_info,
+};
+
+static void vlan_transfer_features(struct net_device *dev,
+				   struct net_device *vlandev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+
+	netif_inherit_tso_max(vlandev, dev);
+
+	if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto))
+		vlandev->hard_header_len = dev->hard_header_len;
+	else
+		vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;
+
+#if IS_ENABLED(CONFIG_FCOE)
+	vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
+#endif
+
+	vlandev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+	vlandev->priv_flags |= (vlan->real_dev->priv_flags & IFF_XMIT_DST_RELEASE);
+	vlandev->hw_enc_features = vlan_tnl_features(vlan->real_dev);
+
+	netdev_update_features(vlandev);
+}
+
+static void vlan_dev_work(struct net_device *vlandev, unsigned long events)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+	struct net_device *real_dev = vlan->real_dev;
+	bool loose = vlan->flags & VLAN_FLAG_LOOSE_BINDING;
+	unsigned int flgs;
+
+	if (events & VLAN_WORK_LINK_STATE) {
+		flgs = netif_get_flags(vlandev);
+		if (real_dev->flags & IFF_UP) {
+			if (!(flgs & IFF_UP)) {
+				if (!loose)
+					netif_change_flags(vlandev,
+							   flgs | IFF_UP, NULL);
+				vlan_stacked_transfer_operstate(real_dev,
+								vlandev, vlan);
+			}
+		} else if ((flgs & IFF_UP) && !loose) {
+			netif_change_flags(vlandev, flgs & ~IFF_UP, NULL);
+			vlan_stacked_transfer_operstate(real_dev, vlandev, vlan);
+		}
+	}
+
+	if ((events & VLAN_WORK_MTU) && vlandev->mtu > real_dev->mtu)
+		netif_set_mtu(vlandev, real_dev->mtu);
+
+	if (events & VLAN_WORK_FEATURES)
+		vlan_transfer_features(real_dev, vlandev);
+}
+
+static const struct net_device_ops vlan_netdev_ops = {
+	.ndo_change_mtu		= vlan_dev_change_mtu,
+	.ndo_init		= vlan_dev_init,
+	.ndo_uninit		= vlan_dev_uninit,
+	.ndo_open		= vlan_dev_open,
+	.ndo_stop		= vlan_dev_stop,
+	.ndo_start_xmit =  vlan_dev_hard_start_xmit,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= vlan_dev_set_mac_address,
+	.ndo_set_rx_mode	= vlan_dev_set_rx_mode,
+	.ndo_change_rx_flags	= vlan_dev_change_rx_flags,
+	.ndo_work		= vlan_dev_work,
+	.ndo_eth_ioctl		= vlan_dev_ioctl,
+	.ndo_neigh_setup	= vlan_dev_neigh_setup,
+	.ndo_get_stats64	= vlan_dev_get_stats64,
+#if IS_ENABLED(CONFIG_FCOE)
+	.ndo_fcoe_ddp_setup	= vlan_dev_fcoe_ddp_setup,
+	.ndo_fcoe_ddp_done	= vlan_dev_fcoe_ddp_done,
+	.ndo_fcoe_enable	= vlan_dev_fcoe_enable,
+	.ndo_fcoe_disable	= vlan_dev_fcoe_disable,
+	.ndo_fcoe_ddp_target	= vlan_dev_fcoe_ddp_target,
+#endif
+#ifdef NETDEV_FCOE_WWNN
+	.ndo_fcoe_get_wwn	= vlan_dev_fcoe_get_wwn,
+#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= vlan_dev_poll_controller,
+	.ndo_netpoll_setup	= vlan_dev_netpoll_setup,
+	.ndo_netpoll_cleanup	= vlan_dev_netpoll_cleanup,
+#endif
+	.ndo_fix_features	= vlan_dev_fix_features,
+	.ndo_get_iflink		= vlan_dev_get_iflink,
+	.ndo_fill_forward_path	= vlan_dev_fill_forward_path,
+	.ndo_hwtstamp_get	= vlan_hwtstamp_get,
+	.ndo_hwtstamp_set	= vlan_hwtstamp_set,
+};
+
+static void vlan_dev_free(struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+	free_percpu(vlan->vlan_pcpu_stats);
+	vlan->vlan_pcpu_stats = NULL;
+
+	/* Get rid of the vlan's reference to real_dev */
+	netdev_put(vlan->real_dev, &vlan->dev_tracker);
+}
+
+void vlan_setup(struct net_device *dev)
+{
+	ether_setup(dev);
+
+	dev->priv_flags		|= IFF_802_1Q_VLAN | IFF_NO_QUEUE;
+	dev->priv_flags		|= IFF_UNICAST_FLT;
+	dev->priv_flags		&= ~IFF_TX_SKB_SHARING;
+	netif_keep_dst(dev);
+
+	dev->netdev_ops		= &vlan_netdev_ops;
+	dev->needs_free_netdev	= true;
+	dev->priv_destructor	= vlan_dev_free;
+	dev->ethtool_ops	= &vlan_ethtool_ops;
+
+#if IS_ENABLED(CONFIG_MACSEC)
+	dev->macsec_ops		= &macsec_offload_ops;
+#endif
+	dev->min_mtu		= 0;
+	dev->max_mtu		= ETH_MAX_MTU;
+
+	eth_zero_addr(dev->broadcast);
+}
diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
new file mode 100644
index 000000000..6b34b72aa
--- /dev/null
+++ b/net/8021q/vlan_gvrp.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * 	IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
+ *
+ * 	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ */
+#include <linux/types.h>
+#include <linux/if_vlan.h>
+#include <net/garp.h>
+#include "vlan.h"
+
+#define GARP_GVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum gvrp_attributes {
+	GVRP_ATTR_INVALID,
+	GVRP_ATTR_VID,
+	__GVRP_ATTR_MAX
+};
+#define GVRP_ATTR_MAX	(__GVRP_ATTR_MAX - 1)
+
+static struct garp_application vlan_gvrp_app __read_mostly = {
+	.proto.group_address	= GARP_GVRP_ADDRESS,
+	.maxattr		= GVRP_ATTR_MAX,
+	.type			= GARP_APPLICATION_GVRP,
+};
+
+int vlan_gvrp_request_join(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return 0;
+	return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
+				 &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+void vlan_gvrp_request_leave(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return;
+	garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
+			   &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+int vlan_gvrp_init_applicant(struct net_device *dev)
+{
+	return garp_init_applicant(dev, &vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit_applicant(struct net_device *dev)
+{
+	garp_uninit_applicant(dev, &vlan_gvrp_app);
+}
+
+int __init vlan_gvrp_init(void)
+{
+	return garp_register_application(&vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit(void)
+{
+	garp_unregister_application(&vlan_gvrp_app);
+}
diff --git a/net/8021q/vlan_mvrp.c b/net/8021q/vlan_mvrp.c
new file mode 100644
index 000000000..689eceeaa
--- /dev/null
+++ b/net/8021q/vlan_mvrp.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
+ *
+ *	Copyright (c) 2012 Massachusetts Institute of Technology
+ *
+ *	Adapted from code in net/8021q/vlan_gvrp.c
+ *	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ */
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <net/mrp.h>
+#include "vlan.h"
+
+#define MRP_MVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum mvrp_attributes {
+	MVRP_ATTR_INVALID,
+	MVRP_ATTR_VID,
+	__MVRP_ATTR_MAX
+};
+#define MVRP_ATTR_MAX	(__MVRP_ATTR_MAX - 1)
+
+static struct mrp_application vlan_mrp_app __read_mostly = {
+	.type		= MRP_APPLICATION_MVRP,
+	.maxattr	= MVRP_ATTR_MAX,
+	.pkttype.type	= htons(ETH_P_MVRP),
+	.group_address	= MRP_MVRP_ADDRESS,
+	.version	= 0,
+};
+
+int vlan_mvrp_request_join(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return 0;
+	return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
+				&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+void vlan_mvrp_request_leave(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	if (vlan->vlan_proto != htons(ETH_P_8021Q))
+		return;
+	mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
+			  &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+int vlan_mvrp_init_applicant(struct net_device *dev)
+{
+	return mrp_init_applicant(dev, &vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit_applicant(struct net_device *dev)
+{
+	mrp_uninit_applicant(dev, &vlan_mrp_app);
+}
+
+int __init vlan_mvrp_init(void)
+{
+	return mrp_register_application(&vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit(void)
+{
+	mrp_unregister_application(&vlan_mrp_app);
+}
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
new file mode 100644
index 000000000..368d53ca7
--- /dev/null
+++ b/net/8021q/vlan_netlink.c
@@ -0,0 +1,313 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	VLAN netlink control interface
+ *
+ * 	Copyright (c) 2007 Patrick McHardy <kaber@trash.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/module.h>
+#include <net/net_namespace.h>
+#include <net/netlink.h>
+#include <net/rtnetlink.h>
+#include "vlan.h"
+
+
+static const struct nla_policy vlan_policy[IFLA_VLAN_MAX + 1] = {
+	[IFLA_VLAN_ID]		= { .type = NLA_U16 },
+	[IFLA_VLAN_FLAGS]	= { .len = sizeof(struct ifla_vlan_flags) },
+	[IFLA_VLAN_EGRESS_QOS]	= { .type = NLA_NESTED },
+	[IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
+	[IFLA_VLAN_PROTOCOL]	= { .type = NLA_U16 },
+};
+
+static const struct nla_policy vlan_map_policy[IFLA_VLAN_QOS_MAX + 1] = {
+	[IFLA_VLAN_QOS_MAPPING] = { .len = sizeof(struct ifla_vlan_qos_mapping) },
+};
+
+
+static inline int vlan_validate_qos_map(struct nlattr *attr)
+{
+	if (!attr)
+		return 0;
+	return nla_validate_nested_deprecated(attr, IFLA_VLAN_QOS_MAX,
+					      vlan_map_policy, NULL);
+}
+
+static int vlan_validate(struct nlattr *tb[], struct nlattr *data[],
+			 struct netlink_ext_ack *extack)
+{
+	struct ifla_vlan_flags *flags;
+	u16 id;
+	int err;
+
+	if (tb[IFLA_ADDRESS]) {
+		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid link address");
+			return -EINVAL;
+		}
+		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid link address");
+			return -EADDRNOTAVAIL;
+		}
+	}
+
+	if (!data) {
+		NL_SET_ERR_MSG_MOD(extack, "VLAN properties not specified");
+		return -EINVAL;
+	}
+
+	if (data[IFLA_VLAN_PROTOCOL]) {
+		switch (nla_get_be16(data[IFLA_VLAN_PROTOCOL])) {
+		case htons(ETH_P_8021Q):
+		case htons(ETH_P_8021AD):
+			break;
+		default:
+			NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN protocol");
+			return -EPROTONOSUPPORT;
+		}
+	}
+
+	if (data[IFLA_VLAN_ID]) {
+		id = nla_get_u16(data[IFLA_VLAN_ID]);
+		if (id >= VLAN_VID_MASK) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN id");
+			return -ERANGE;
+		}
+	}
+	if (data[IFLA_VLAN_FLAGS]) {
+		flags = nla_data(data[IFLA_VLAN_FLAGS]);
+		if ((flags->flags & flags->mask) &
+		    ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
+		      VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP |
+		      VLAN_FLAG_BRIDGE_BINDING)) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN flags");
+			return -EINVAL;
+		}
+	}
+
+	err = vlan_validate_qos_map(data[IFLA_VLAN_INGRESS_QOS]);
+	if (err < 0) {
+		NL_SET_ERR_MSG_MOD(extack, "Invalid ingress QOS map");
+		return err;
+	}
+	err = vlan_validate_qos_map(data[IFLA_VLAN_EGRESS_QOS]);
+	if (err < 0) {
+		NL_SET_ERR_MSG_MOD(extack, "Invalid egress QOS map");
+		return err;
+	}
+	return 0;
+}
+
+static int vlan_changelink(struct net_device *dev, struct nlattr *tb[],
+			   struct nlattr *data[],
+			   struct netlink_ext_ack *extack)
+{
+	struct ifla_vlan_flags *flags;
+	struct ifla_vlan_qos_mapping *m;
+	struct nlattr *attr;
+	int rem, err;
+
+	if (data[IFLA_VLAN_FLAGS]) {
+		flags = nla_data(data[IFLA_VLAN_FLAGS]);
+		err = vlan_dev_change_flags(dev, flags->flags, flags->mask);
+		if (err)
+			return err;
+	}
+	if (data[IFLA_VLAN_INGRESS_QOS]) {
+		nla_for_each_nested_type(attr, IFLA_VLAN_QOS_MAPPING,
+					 data[IFLA_VLAN_INGRESS_QOS], rem) {
+			m = nla_data(attr);
+			vlan_dev_set_ingress_priority(dev, m->to, m->from);
+		}
+	}
+	if (data[IFLA_VLAN_EGRESS_QOS]) {
+		nla_for_each_nested_type(attr, IFLA_VLAN_QOS_MAPPING,
+					 data[IFLA_VLAN_EGRESS_QOS], rem) {
+			m = nla_data(attr);
+			err = vlan_dev_set_egress_priority(dev, m->from, m->to);
+			if (err)
+				return err;
+		}
+	}
+	return 0;
+}
+
+static int vlan_newlink(struct net_device *dev,
+			struct rtnl_newlink_params *params,
+			struct netlink_ext_ack *extack)
+{
+	struct net *link_net = rtnl_newlink_link_net(params);
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct nlattr **data = params->data;
+	struct nlattr **tb = params->tb;
+	struct net_device *real_dev;
+	unsigned int max_mtu;
+	__be16 proto;
+	int err;
+
+	if (!data[IFLA_VLAN_ID]) {
+		NL_SET_ERR_MSG_MOD(extack, "VLAN id not specified");
+		return -EINVAL;
+	}
+
+	if (!tb[IFLA_LINK]) {
+		NL_SET_ERR_MSG_MOD(extack, "link not specified");
+		return -EINVAL;
+	}
+
+	real_dev = __dev_get_by_index(link_net, nla_get_u32(tb[IFLA_LINK]));
+	if (!real_dev) {
+		NL_SET_ERR_MSG_MOD(extack, "link does not exist");
+		return -ENODEV;
+	}
+
+	proto = nla_get_be16_default(data[IFLA_VLAN_PROTOCOL],
+				     htons(ETH_P_8021Q));
+
+	vlan->vlan_proto = proto;
+	vlan->vlan_id	 = nla_get_u16(data[IFLA_VLAN_ID]);
+	vlan->real_dev	 = real_dev;
+	dev->priv_flags |= (real_dev->priv_flags & IFF_XMIT_DST_RELEASE);
+	vlan->flags	 = VLAN_FLAG_REORDER_HDR;
+
+	err = vlan_check_real_dev(real_dev, vlan->vlan_proto, vlan->vlan_id,
+				  extack);
+	if (err < 0)
+		return err;
+
+	max_mtu = netif_reduces_vlan_mtu(real_dev) ? real_dev->mtu - VLAN_HLEN :
+						     real_dev->mtu;
+	if (!tb[IFLA_MTU])
+		dev->mtu = max_mtu;
+	else if (dev->mtu > max_mtu)
+		return -EINVAL;
+
+	/* Note: If this initial vlan_changelink() fails, we need
+	 * to call vlan_dev_free_egress_priority() to free memory.
+	 */
+	err = vlan_changelink(dev, tb, data, extack);
+
+	if (!err)
+		err = register_vlan_dev(dev, extack);
+
+	if (err)
+		vlan_dev_free_egress_priority(dev);
+	return err;
+}
+
+static inline size_t vlan_qos_map_size(unsigned int n)
+{
+	if (n == 0)
+		return 0;
+	/* IFLA_VLAN_{EGRESS,INGRESS}_QOS + n * IFLA_VLAN_QOS_MAPPING */
+	return nla_total_size(sizeof(struct nlattr)) +
+	       nla_total_size(sizeof(struct ifla_vlan_qos_mapping)) * n;
+}
+
+static size_t vlan_get_size(const struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+	return nla_total_size(2) +	/* IFLA_VLAN_PROTOCOL */
+	       nla_total_size(2) +	/* IFLA_VLAN_ID */
+	       nla_total_size(sizeof(struct ifla_vlan_flags)) + /* IFLA_VLAN_FLAGS */
+	       vlan_qos_map_size(vlan->nr_ingress_mappings) +
+	       vlan_qos_map_size(vlan->nr_egress_mappings);
+}
+
+static int vlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	struct vlan_priority_tci_mapping *pm;
+	struct ifla_vlan_flags f;
+	struct ifla_vlan_qos_mapping m;
+	struct nlattr *nest;
+	unsigned int i;
+
+	if (nla_put_be16(skb, IFLA_VLAN_PROTOCOL, vlan->vlan_proto) ||
+	    nla_put_u16(skb, IFLA_VLAN_ID, vlan->vlan_id))
+		goto nla_put_failure;
+	if (vlan->flags) {
+		f.flags = vlan->flags;
+		f.mask  = ~0;
+		if (nla_put(skb, IFLA_VLAN_FLAGS, sizeof(f), &f))
+			goto nla_put_failure;
+	}
+	if (vlan->nr_ingress_mappings) {
+		nest = nla_nest_start_noflag(skb, IFLA_VLAN_INGRESS_QOS);
+		if (nest == NULL)
+			goto nla_put_failure;
+
+		for (i = 0; i < ARRAY_SIZE(vlan->ingress_priority_map); i++) {
+			if (!vlan->ingress_priority_map[i])
+				continue;
+
+			m.from = i;
+			m.to   = vlan->ingress_priority_map[i];
+			if (nla_put(skb, IFLA_VLAN_QOS_MAPPING,
+				    sizeof(m), &m))
+				goto nla_put_failure;
+		}
+		nla_nest_end(skb, nest);
+	}
+
+	if (vlan->nr_egress_mappings) {
+		nest = nla_nest_start_noflag(skb, IFLA_VLAN_EGRESS_QOS);
+		if (nest == NULL)
+			goto nla_put_failure;
+
+		for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
+			for (pm = rcu_dereference_rtnl(vlan->egress_priority_map[i]); pm;
+			     pm = rcu_dereference_rtnl(pm->next)) {
+				u16 vlan_qos = READ_ONCE(pm->vlan_qos);
+				m.from = pm->priority;
+				m.to   = (vlan_qos >> 13) & 0x7;
+				if (nla_put(skb, IFLA_VLAN_QOS_MAPPING,
+					    sizeof(m), &m))
+					goto nla_put_failure;
+			}
+		}
+		nla_nest_end(skb, nest);
+	}
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+static struct net *vlan_get_link_net(const struct net_device *dev)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	return dev_net(real_dev);
+}
+
+struct rtnl_link_ops vlan_link_ops __read_mostly = {
+	.kind		= "vlan",
+	.maxtype	= IFLA_VLAN_MAX,
+	.policy		= vlan_policy,
+	.priv_size	= sizeof(struct vlan_dev_priv),
+	.setup		= vlan_setup,
+	.validate	= vlan_validate,
+	.newlink	= vlan_newlink,
+	.changelink	= vlan_changelink,
+	.dellink	= unregister_vlan_dev,
+	.get_size	= vlan_get_size,
+	.fill_info	= vlan_fill_info,
+	.get_link_net	= vlan_get_link_net,
+};
+
+int __init vlan_netlink_init(void)
+{
+	return rtnl_link_register(&vlan_link_ops);
+}
+
+void __exit vlan_netlink_fini(void)
+{
+	rtnl_link_unregister(&vlan_link_ops);
+}
+
+MODULE_ALIAS_RTNL_LINK("vlan");
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
new file mode 100644
index 000000000..0e424e089
--- /dev/null
+++ b/net/8021q/vlanproc.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/******************************************************************************
+ * vlanproc.c	VLAN Module. /proc filesystem interface.
+ *
+ *		This module is completely hardware-independent and provides
+ *		access to the router using Linux /proc filesystem.
+ *
+ * Author:	Ben Greear, <greearb@candelatech.com> coppied from wanproc.c
+ *               by: Gene Kozin	<genek@compuserve.com>
+ *
+ * Copyright:	(c) 1998 Ben Greear
+ *
+ * ============================================================================
+ * Jan 20, 1998        Ben Greear     Initial Version
+ *****************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/fs.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include "vlanproc.h"
+#include "vlan.h"
+
+/****** Function Prototypes *************************************************/
+
+/* Methods for preparing data for reading proc entries */
+static int vlan_seq_show(struct seq_file *seq, void *v);
+static void *vlan_seq_start(struct seq_file *seq, loff_t *pos);
+static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos);
+static void vlan_seq_stop(struct seq_file *seq, void *);
+static int vlandev_seq_show(struct seq_file *seq, void *v);
+
+/*
+ *	Global Data
+ */
+
+
+/*
+ *	Names of the proc directory entries
+ */
+
+static const char name_root[]	 = "vlan";
+static const char name_conf[]	 = "config";
+
+/*
+ *	Structures for interfacing with the /proc filesystem.
+ *	VLAN creates its own directory /proc/net/vlan with the following
+ *	entries:
+ *	config		device status/configuration
+ *	<device>	entry for each  device
+ */
+
+/*
+ *	Generic /proc/net/vlan/<file> file and inode operations
+ */
+
+static const struct seq_operations vlan_seq_ops = {
+	.start = vlan_seq_start,
+	.next = vlan_seq_next,
+	.stop = vlan_seq_stop,
+	.show = vlan_seq_show,
+};
+
+/*
+ * Proc filesystem directory entries.
+ */
+
+/* Strings */
+static const char *const vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
+    [VLAN_NAME_TYPE_RAW_PLUS_VID]        = "VLAN_NAME_TYPE_RAW_PLUS_VID",
+    [VLAN_NAME_TYPE_PLUS_VID_NO_PAD]	 = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD",
+    [VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD] = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD",
+    [VLAN_NAME_TYPE_PLUS_VID]		 = "VLAN_NAME_TYPE_PLUS_VID",
+};
+/*
+ *	Interface functions
+ */
+
+/*
+ *	Clean up /proc/net/vlan entries
+ */
+
+void vlan_proc_cleanup(struct net *net)
+{
+	struct vlan_net *vn = net_generic(net, vlan_net_id);
+
+	if (vn->proc_vlan_conf)
+		remove_proc_entry(name_conf, vn->proc_vlan_dir);
+
+	if (vn->proc_vlan_dir)
+		remove_proc_entry(name_root, net->proc_net);
+
+	/* Dynamically added entries should be cleaned up as their vlan_device
+	 * is removed, so we should not have to take care of it here...
+	 */
+}
+
+/*
+ *	Create /proc/net/vlan entries
+ */
+
+int __net_init vlan_proc_init(struct net *net)
+{
+	struct vlan_net *vn = net_generic(net, vlan_net_id);
+
+	vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
+	if (!vn->proc_vlan_dir)
+		goto err;
+
+	vn->proc_vlan_conf = proc_create_net(name_conf, S_IFREG | 0600,
+			vn->proc_vlan_dir, &vlan_seq_ops,
+			sizeof(struct seq_net_private));
+	if (!vn->proc_vlan_conf)
+		goto err;
+	return 0;
+
+err:
+	pr_err("can't create entry in proc filesystem!\n");
+	vlan_proc_cleanup(net);
+	return -ENOBUFS;
+}
+
+/*
+ *	Add directory entry for VLAN device.
+ */
+
+int vlan_proc_add_dev(struct net_device *vlandev)
+{
+	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+	struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
+
+	if (!strcmp(vlandev->name, name_conf))
+		return -EINVAL;
+	vlan->dent = proc_create_single_data(vlandev->name, S_IFREG | 0600,
+			vn->proc_vlan_dir, vlandev_seq_show, vlandev);
+	if (!vlan->dent)
+		return -ENOBUFS;
+	return 0;
+}
+
+/*
+ *	Delete directory entry for VLAN device.
+ */
+void vlan_proc_rem_dev(struct net_device *vlandev)
+{
+	/** NOTE:  This will consume the memory pointed to by dent, it seems. */
+	proc_remove(vlan_dev_priv(vlandev)->dent);
+	vlan_dev_priv(vlandev)->dent = NULL;
+}
+
+/****** Proc filesystem entry points ****************************************/
+
+/*
+ * The following few functions build the content of /proc/net/vlan/config
+ */
+
+static void *vlan_seq_from_index(struct seq_file *seq, loff_t *pos)
+{
+	unsigned long ifindex = *pos;
+	struct net_device *dev;
+
+	for_each_netdev_dump(seq_file_net(seq), dev, ifindex) {
+		if (!is_vlan_dev(dev))
+			continue;
+		*pos = dev->ifindex;
+		return dev;
+	}
+	return NULL;
+}
+
+static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(rcu)
+{
+	rcu_read_lock();
+	if (*pos == 0)
+		return SEQ_START_TOKEN;
+
+	return vlan_seq_from_index(seq, pos);
+}
+
+static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	return vlan_seq_from_index(seq, pos);
+}
+
+static void vlan_seq_stop(struct seq_file *seq, void *v)
+	__releases(rcu)
+{
+	rcu_read_unlock();
+}
+
+static int vlan_seq_show(struct seq_file *seq, void *v)
+{
+	struct net *net = seq_file_net(seq);
+	struct vlan_net *vn = net_generic(net, vlan_net_id);
+
+	if (v == SEQ_START_TOKEN) {
+		const char *nmtype = NULL;
+
+		seq_puts(seq, "VLAN Dev name	 | VLAN ID\n");
+
+		if (vn->name_type < ARRAY_SIZE(vlan_name_type_str))
+		    nmtype =  vlan_name_type_str[vn->name_type];
+
+		seq_printf(seq, "Name-Type: %s\n",
+			   nmtype ? nmtype :  "UNKNOWN");
+	} else {
+		const struct net_device *vlandev = v;
+		const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+
+		seq_printf(seq, "%-15s| %d  | %s\n",  vlandev->name,
+			   vlan->vlan_id,    vlan->real_dev->name);
+	}
+	return 0;
+}
+
+static int vlandev_seq_show(struct seq_file *seq, void *offset)
+{
+	struct net_device *vlandev = (struct net_device *) seq->private;
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
+	struct rtnl_link_stats64 temp;
+	const struct rtnl_link_stats64 *stats;
+	static const char fmt64[] = "%30s %12llu\n";
+	int i;
+
+	if (!is_vlan_dev(vlandev))
+		return 0;
+
+	stats = dev_get_stats(vlandev, &temp);
+	seq_printf(seq,
+		   "%s  VID: %d	 REORDER_HDR: %i  dev->priv_flags: %x\n",
+		   vlandev->name, vlan->vlan_id,
+		   (int)(vlan->flags & 1), (u32)vlandev->priv_flags);
+
+	seq_printf(seq, fmt64, "total frames received", stats->rx_packets);
+	seq_printf(seq, fmt64, "total bytes received", stats->rx_bytes);
+	seq_printf(seq, fmt64, "Broadcast/Multicast Rcvd", stats->multicast);
+	seq_puts(seq, "\n");
+	seq_printf(seq, fmt64, "total frames transmitted", stats->tx_packets);
+	seq_printf(seq, fmt64, "total bytes transmitted", stats->tx_bytes);
+	seq_printf(seq, "Device: %s", vlan->real_dev->name);
+	/* now show all PRIORITY mappings relating to this VLAN */
+	seq_printf(seq, "\nINGRESS priority mappings: "
+			"0:%u  1:%u  2:%u  3:%u  4:%u  5:%u  6:%u 7:%u\n",
+		   vlan->ingress_priority_map[0],
+		   vlan->ingress_priority_map[1],
+		   vlan->ingress_priority_map[2],
+		   vlan->ingress_priority_map[3],
+		   vlan->ingress_priority_map[4],
+		   vlan->ingress_priority_map[5],
+		   vlan->ingress_priority_map[6],
+		   vlan->ingress_priority_map[7]);
+
+	seq_printf(seq, " EGRESS priority mappings: ");
+	rcu_read_lock();
+	for (i = 0; i < 16; i++) {
+		const struct vlan_priority_tci_mapping *mp =
+			rcu_dereference(vlan->egress_priority_map[i]);
+		while (mp) {
+			u16 vlan_qos = READ_ONCE(mp->vlan_qos);
+
+			seq_printf(seq, "%u:%d ",
+				   mp->priority, ((vlan_qos >> 13) & 0x7));
+			mp = rcu_dereference(mp->next);
+		}
+	}
+	rcu_read_unlock();
+	seq_puts(seq, "\n");
+
+	return 0;
+}
diff --git a/net/8021q/vlanproc.h b/net/8021q/vlanproc.h
new file mode 100644
index 000000000..48cd4b478
--- /dev/null
+++ b/net/8021q/vlanproc.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __BEN_VLAN_PROC_INC__
+#define __BEN_VLAN_PROC_INC__
+
+#ifdef CONFIG_PROC_FS
+struct net;
+
+int vlan_proc_init(struct net *net);
+void vlan_proc_rem_dev(struct net_device *vlandev);
+int vlan_proc_add_dev(struct net_device *vlandev);
+void vlan_proc_cleanup(struct net *net);
+
+#else /* No CONFIG_PROC_FS */
+
+#define vlan_proc_init(net)	(0)
+#define vlan_proc_cleanup(net)	do {} while (0)
+#define vlan_proc_add_dev(dev)	({(void)(dev), 0; })
+#define vlan_proc_rem_dev(dev)	do {} while (0)
+#endif
+
+#endif /* !(__BEN_VLAN_PROC_INC__) */