Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1649 insertions, 0 deletions

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
new file mode 100644
index 000000000..c00cb3762
--- /dev/null
+++ b/net/bridge/br_netlink.c
@@ -0,0 +1,1649 @@
+/*
+ *	Bridge netlink control interface
+ *
+ *	Authors:
+ *	Stephen Hemminger		<shemminger@osdl.org>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/etherdevice.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <uapi/linux/if_bridge.h>
+
+#include "br_private.h"
+#include "br_private_stp.h"
+#include "br_private_tunnel.h"
+
+static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
+				u32 filter_mask)
+{
+	struct net_bridge_vlan *v;
+	u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
+	u16 flags, pvid;
+	int num_vlans = 0;
+
+	if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
+		return 0;
+
+	pvid = br_get_pvid(vg);
+	/* Count number of vlan infos */
+	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+		flags = 0;
+		/* only a context, bridge vlan not activated */
+		if (!br_vlan_should_use(v))
+			continue;
+		if (v->vid == pvid)
+			flags |= BRIDGE_VLAN_INFO_PVID;
+
+		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
+			flags |= BRIDGE_VLAN_INFO_UNTAGGED;
+
+		if (vid_range_start == 0) {
+			goto initvars;
+		} else if ((v->vid - vid_range_end) == 1 &&
+			flags == vid_range_flags) {
+			vid_range_end = v->vid;
+			continue;
+		} else {
+			if ((vid_range_end - vid_range_start) > 0)
+				num_vlans += 2;
+			else
+				num_vlans += 1;
+		}
+initvars:
+		vid_range_start = v->vid;
+		vid_range_end = v->vid;
+		vid_range_flags = flags;
+	}
+
+	if (vid_range_start != 0) {
+		if ((vid_range_end - vid_range_start) > 0)
+			num_vlans += 2;
+		else
+			num_vlans += 1;
+	}
+
+	return num_vlans;
+}
+
+static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
+				 u32 filter_mask)
+{
+	int num_vlans;
+
+	if (!vg)
+		return 0;
+
+	if (filter_mask & RTEXT_FILTER_BRVLAN)
+		return vg->num_vlans;
+
+	rcu_read_lock();
+	num_vlans = __get_num_vlan_infos(vg, filter_mask);
+	rcu_read_unlock();
+
+	return num_vlans;
+}
+
+static size_t br_get_link_af_size_filtered(const struct net_device *dev,
+					   u32 filter_mask)
+{
+	struct net_bridge_vlan_group *vg = NULL;
+	struct net_bridge_port *p = NULL;
+	struct net_bridge *br;
+	int num_vlan_infos;
+	size_t vinfo_sz = 0;
+
+	rcu_read_lock();
+	if (br_port_exists(dev)) {
+		p = br_port_get_rcu(dev);
+		vg = nbp_vlan_group_rcu(p);
+	} else if (dev->priv_flags & IFF_EBRIDGE) {
+		br = netdev_priv(dev);
+		vg = br_vlan_group_rcu(br);
+	}
+	num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
+	rcu_read_unlock();
+
+	if (p && (p->flags & BR_VLAN_TUNNEL))
+		vinfo_sz += br_get_vlan_tunnel_info_size(vg);
+
+	/* Each VLAN is returned in bridge_vlan_info along with flags */
+	vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
+
+	return vinfo_sz;
+}
+
+static inline size_t br_port_info_size(void)
+{
+	return nla_total_size(1)	/* IFLA_BRPORT_STATE  */
+		+ nla_total_size(2)	/* IFLA_BRPORT_PRIORITY */
+		+ nla_total_size(4)	/* IFLA_BRPORT_COST */
+		+ nla_total_size(1)	/* IFLA_BRPORT_MODE */
+		+ nla_total_size(1)	/* IFLA_BRPORT_GUARD */
+		+ nla_total_size(1)	/* IFLA_BRPORT_PROTECT */
+		+ nla_total_size(1)	/* IFLA_BRPORT_FAST_LEAVE */
+		+ nla_total_size(1)	/* IFLA_BRPORT_MCAST_TO_UCAST */
+		+ nla_total_size(1)	/* IFLA_BRPORT_LEARNING */
+		+ nla_total_size(1)	/* IFLA_BRPORT_UNICAST_FLOOD */
+		+ nla_total_size(1)	/* IFLA_BRPORT_MCAST_FLOOD */
+		+ nla_total_size(1)	/* IFLA_BRPORT_BCAST_FLOOD */
+		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP */
+		+ nla_total_size(1)	/* IFLA_BRPORT_PROXYARP_WIFI */
+		+ nla_total_size(1)	/* IFLA_BRPORT_VLAN_TUNNEL */
+		+ nla_total_size(1)	/* IFLA_BRPORT_NEIGH_SUPPRESS */
+		+ nla_total_size(1)	/* IFLA_BRPORT_ISOLATED */
+		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_ROOT_ID */
+		+ nla_total_size(sizeof(struct ifla_bridge_id))	/* IFLA_BRPORT_BRIDGE_ID */
+		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_DESIGNATED_PORT */
+		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_DESIGNATED_COST */
+		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_ID */
+		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_NO */
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_CONFIG_PENDING */
+		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
+		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
+		+ nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_MULTICAST_ROUTER */
+#endif
+		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_GROUP_FWD_MASK */
+		+ 0;
+}
+
+static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
+{
+	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+		+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+		+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+		+ nla_total_size(4) /* IFLA_MASTER */
+		+ nla_total_size(4) /* IFLA_MTU */
+		+ nla_total_size(4) /* IFLA_LINK */
+		+ nla_total_size(1) /* IFLA_OPERSTATE */
+		+ nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
+		+ nla_total_size(br_get_link_af_size_filtered(dev,
+				 filter_mask)) /* IFLA_AF_SPEC */
+		+ nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
+}
+
+static int br_port_fill_attrs(struct sk_buff *skb,
+			      const struct net_bridge_port *p)
+{
+	u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
+	struct net_bridge_port *backup_p;
+	u64 timerval;
+
+	if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
+	    nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
+	    nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
+	    nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
+	    nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_PROTECT,
+		       !!(p->flags & BR_ROOT_BLOCK)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
+		       !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
+		       !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
+		       !!(p->flags & BR_FLOOD)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
+		       !!(p->flags & BR_MCAST_FLOOD)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
+		       !!(p->flags & BR_BCAST_FLOOD)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
+		       !!(p->flags & BR_PROXYARP_WIFI)) ||
+	    nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
+		    &p->designated_root) ||
+	    nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
+		    &p->designated_bridge) ||
+	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
+	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
+	    nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
+	    nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
+	    nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
+		       p->topology_change_ack) ||
+	    nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
+	    nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
+							BR_VLAN_TUNNEL)) ||
+	    nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
+	    nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
+		       !!(p->flags & BR_NEIGH_SUPPRESS)) ||
+	    nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
+		return -EMSGSIZE;
+
+	timerval = br_timer_value(&p->message_age_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
+			      IFLA_BRPORT_PAD))
+		return -EMSGSIZE;
+	timerval = br_timer_value(&p->forward_delay_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
+			      IFLA_BRPORT_PAD))
+		return -EMSGSIZE;
+	timerval = br_timer_value(&p->hold_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
+			      IFLA_BRPORT_PAD))
+		return -EMSGSIZE;
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
+		       p->multicast_router))
+		return -EMSGSIZE;
+#endif
+
+	/* we might be called only with br->lock */
+	rcu_read_lock();
+	backup_p = rcu_dereference(p->backup_port);
+	if (backup_p)
+		nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
+			    backup_p->dev->ifindex);
+	rcu_read_unlock();
+
+	return 0;
+}
+
+static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
+				    u16 vid_end, u16 flags)
+{
+	struct  bridge_vlan_info vinfo;
+
+	if ((vid_end - vid_start) > 0) {
+		/* add range to skb */
+		vinfo.vid = vid_start;
+		vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
+		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
+			    sizeof(vinfo), &vinfo))
+			goto nla_put_failure;
+
+		vinfo.vid = vid_end;
+		vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
+		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
+			    sizeof(vinfo), &vinfo))
+			goto nla_put_failure;
+	} else {
+		vinfo.vid = vid_start;
+		vinfo.flags = flags;
+		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
+			    sizeof(vinfo), &vinfo))
+			goto nla_put_failure;
+	}
+
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
+					 struct net_bridge_vlan_group *vg)
+{
+	struct net_bridge_vlan *v;
+	u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
+	u16 flags, pvid;
+	int err = 0;
+
+	/* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
+	 * and mark vlan info with begin and end flags
+	 * if vlaninfo represents a range
+	 */
+	pvid = br_get_pvid(vg);
+	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+		flags = 0;
+		if (!br_vlan_should_use(v))
+			continue;
+		if (v->vid == pvid)
+			flags |= BRIDGE_VLAN_INFO_PVID;
+
+		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
+			flags |= BRIDGE_VLAN_INFO_UNTAGGED;
+
+		if (vid_range_start == 0) {
+			goto initvars;
+		} else if ((v->vid - vid_range_end) == 1 &&
+			flags == vid_range_flags) {
+			vid_range_end = v->vid;
+			continue;
+		} else {
+			err = br_fill_ifvlaninfo_range(skb, vid_range_start,
+						       vid_range_end,
+						       vid_range_flags);
+			if (err)
+				return err;
+		}
+
+initvars:
+		vid_range_start = v->vid;
+		vid_range_end = v->vid;
+		vid_range_flags = flags;
+	}
+
+	if (vid_range_start != 0) {
+		/* Call it once more to send any left over vlans */
+		err = br_fill_ifvlaninfo_range(skb, vid_range_start,
+					       vid_range_end,
+					       vid_range_flags);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int br_fill_ifvlaninfo(struct sk_buff *skb,
+			      struct net_bridge_vlan_group *vg)
+{
+	struct bridge_vlan_info vinfo;
+	struct net_bridge_vlan *v;
+	u16 pvid;
+
+	pvid = br_get_pvid(vg);
+	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+		if (!br_vlan_should_use(v))
+			continue;
+
+		vinfo.vid = v->vid;
+		vinfo.flags = 0;
+		if (v->vid == pvid)
+			vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
+
+		if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
+			vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
+
+		if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
+			    sizeof(vinfo), &vinfo))
+			goto nla_put_failure;
+	}
+
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+/*
+ * Create one netlink message for one interface
+ * Contains port and master info as well as carrier and bridge state.
+ */
+static int br_fill_ifinfo(struct sk_buff *skb,
+			  const struct net_bridge_port *port,
+			  u32 pid, u32 seq, int event, unsigned int flags,
+			  u32 filter_mask, const struct net_device *dev)
+{
+	u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
+	struct net_bridge *br;
+	struct ifinfomsg *hdr;
+	struct nlmsghdr *nlh;
+
+	if (port)
+		br = port->br;
+	else
+		br = netdev_priv(dev);
+
+	br_debug(br, "br_fill_info event %d port %s master %s\n",
+		     event, dev->name, br->dev->name);
+
+	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	hdr = nlmsg_data(nlh);
+	hdr->ifi_family = AF_BRIDGE;
+	hdr->__ifi_pad = 0;
+	hdr->ifi_type = dev->type;
+	hdr->ifi_index = dev->ifindex;
+	hdr->ifi_flags = dev_get_flags(dev);
+	hdr->ifi_change = 0;
+
+	if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
+	    nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
+	    nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
+	    nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
+	    (dev->addr_len &&
+	     nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
+	    (dev->ifindex != dev_get_iflink(dev) &&
+	     nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
+		goto nla_put_failure;
+
+	if (event == RTM_NEWLINK && port) {
+		struct nlattr *nest
+			= nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
+
+		if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
+			goto nla_put_failure;
+		nla_nest_end(skb, nest);
+	}
+
+	/* Check if  the VID information is requested */
+	if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
+	    (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
+		struct net_bridge_vlan_group *vg;
+		struct nlattr *af;
+		int err;
+
+		/* RCU needed because of the VLAN locking rules (rcu || rtnl) */
+		rcu_read_lock();
+		if (port)
+			vg = nbp_vlan_group_rcu(port);
+		else
+			vg = br_vlan_group_rcu(br);
+
+		if (!vg || !vg->num_vlans) {
+			rcu_read_unlock();
+			goto done;
+		}
+		af = nla_nest_start(skb, IFLA_AF_SPEC);
+		if (!af) {
+			rcu_read_unlock();
+			goto nla_put_failure;
+		}
+		if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
+			err = br_fill_ifvlaninfo_compressed(skb, vg);
+		else
+			err = br_fill_ifvlaninfo(skb, vg);
+
+		if (port && (port->flags & BR_VLAN_TUNNEL))
+			err = br_fill_vlan_tunnel_info(skb, vg);
+		rcu_read_unlock();
+		if (err)
+			goto nla_put_failure;
+		nla_nest_end(skb, af);
+	}
+
+done:
+	nlmsg_end(skb, nlh);
+	return 0;
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+/* Notify listeners of a change in bridge or port information */
+void br_ifinfo_notify(int event, const struct net_bridge *br,
+		      const struct net_bridge_port *port)
+{
+	u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
+	struct net_device *dev;
+	struct sk_buff *skb;
+	int err = -ENOBUFS;
+	struct net *net;
+	u16 port_no = 0;
+
+	if (WARN_ON(!port && !br))
+		return;
+
+	if (port) {
+		dev = port->dev;
+		br = port->br;
+		port_no = port->port_no;
+	} else {
+		dev = br->dev;
+	}
+
+	net = dev_net(dev);
+	br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
+
+	skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
+	if (skb == NULL)
+		goto errout;
+
+	err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in br_nlmsg_size() */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		goto errout;
+	}
+	rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
+	return;
+errout:
+	rtnl_set_sk_err(net, RTNLGRP_LINK, err);
+}
+
+/*
+ * Dump information about all ports, in response to GETLINK
+ */
+int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
+	       struct net_device *dev, u32 filter_mask, int nlflags)
+{
+	struct net_bridge_port *port = br_port_get_rtnl(dev);
+
+	if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
+	    !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
+		return 0;
+
+	return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
+			      filter_mask, dev);
+}
+
+static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
+			int cmd, struct bridge_vlan_info *vinfo, bool *changed)
+{
+	bool curr_change;
+	int err = 0;
+
+	switch (cmd) {
+	case RTM_SETLINK:
+		if (p) {
+			/* if the MASTER flag is set this will act on the global
+			 * per-VLAN entry as well
+			 */
+			err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
+					   &curr_change);
+		} else {
+			vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
+			err = br_vlan_add(br, vinfo->vid, vinfo->flags,
+					  &curr_change);
+		}
+		if (curr_change)
+			*changed = true;
+		break;
+
+	case RTM_DELLINK:
+		if (p) {
+			if (!nbp_vlan_delete(p, vinfo->vid))
+				*changed = true;
+
+			if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
+			    !br_vlan_delete(p->br, vinfo->vid))
+				*changed = true;
+		} else if (!br_vlan_delete(br, vinfo->vid)) {
+			*changed = true;
+		}
+		break;
+	}
+
+	return err;
+}
+
+static int br_process_vlan_info(struct net_bridge *br,
+				struct net_bridge_port *p, int cmd,
+				struct bridge_vlan_info *vinfo_curr,
+				struct bridge_vlan_info **vinfo_last,
+				bool *changed)
+{
+	if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
+		return -EINVAL;
+
+	if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
+		/* check if we are already processing a range */
+		if (*vinfo_last)
+			return -EINVAL;
+		*vinfo_last = vinfo_curr;
+		/* don't allow range of pvids */
+		if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
+			return -EINVAL;
+		return 0;
+	}
+
+	if (*vinfo_last) {
+		struct bridge_vlan_info tmp_vinfo;
+		int v, err;
+
+		if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
+			return -EINVAL;
+
+		if (vinfo_curr->vid <= (*vinfo_last)->vid)
+			return -EINVAL;
+
+		memcpy(&tmp_vinfo, *vinfo_last,
+		       sizeof(struct bridge_vlan_info));
+		for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
+			tmp_vinfo.vid = v;
+			err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed);
+			if (err)
+				break;
+		}
+		*vinfo_last = NULL;
+
+		return err;
+	}
+
+	return br_vlan_info(br, p, cmd, vinfo_curr, changed);
+}
+
+static int br_afspec(struct net_bridge *br,
+		     struct net_bridge_port *p,
+		     struct nlattr *af_spec,
+		     int cmd, bool *changed)
+{
+	struct bridge_vlan_info *vinfo_curr = NULL;
+	struct bridge_vlan_info *vinfo_last = NULL;
+	struct nlattr *attr;
+	struct vtunnel_info tinfo_last = {};
+	struct vtunnel_info tinfo_curr = {};
+	int err = 0, rem;
+
+	nla_for_each_nested(attr, af_spec, rem) {
+		err = 0;
+		switch (nla_type(attr)) {
+		case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
+			if (!p || !(p->flags & BR_VLAN_TUNNEL))
+				return -EINVAL;
+			err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
+			if (err)
+				return err;
+			err = br_process_vlan_tunnel_info(br, p, cmd,
+							  &tinfo_curr,
+							  &tinfo_last,
+							  changed);
+			if (err)
+				return err;
+			break;
+		case IFLA_BRIDGE_VLAN_INFO:
+			if (nla_len(attr) != sizeof(struct bridge_vlan_info))
+				return -EINVAL;
+			vinfo_curr = nla_data(attr);
+			err = br_process_vlan_info(br, p, cmd, vinfo_curr,
+						   &vinfo_last, changed);
+			if (err)
+				return err;
+			break;
+		}
+	}
+
+	return err;
+}
+
+static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
+	[IFLA_BRPORT_STATE]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_COST]	= { .type = NLA_U32 },
+	[IFLA_BRPORT_PRIORITY]	= { .type = NLA_U16 },
+	[IFLA_BRPORT_MODE]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_GUARD]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_PROTECT]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
+	[IFLA_BRPORT_LEARNING]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
+	[IFLA_BRPORT_PROXYARP]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
+	[IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
+	[IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
+	[IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
+	[IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
+	[IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
+	[IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
+	[IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
+	[IFLA_BRPORT_ISOLATED]	= { .type = NLA_U8 },
+	[IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
+};
+
+/* Change the state of the port and notify spanning tree */
+static int br_set_port_state(struct net_bridge_port *p, u8 state)
+{
+	if (state > BR_STATE_BLOCKING)
+		return -EINVAL;
+
+	/* if kernel STP is running, don't allow changes */
+	if (p->br->stp_enabled == BR_KERNEL_STP)
+		return -EBUSY;
+
+	/* if device is not up, change is not allowed
+	 * if link is not present, only allowable state is disabled
+	 */
+	if (!netif_running(p->dev) ||
+	    (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
+		return -ENETDOWN;
+
+	br_set_state(p, state);
+	br_port_state_selection(p->br);
+	return 0;
+}
+
+/* Set/clear or port flags based on attribute */
+static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
+			    int attrtype, unsigned long mask)
+{
+	unsigned long flags;
+	int err;
+
+	if (!tb[attrtype])
+		return 0;
+
+	if (nla_get_u8(tb[attrtype]))
+		flags = p->flags | mask;
+	else
+		flags = p->flags & ~mask;
+
+	err = br_switchdev_set_port_flag(p, flags, mask);
+	if (err)
+		return err;
+
+	p->flags = flags;
+	return 0;
+}
+
+/* Process bridge protocol info on port */
+static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
+{
+	unsigned long old_flags = p->flags;
+	bool br_vlan_tunnel_old = false;
+	int err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
+	if (err)
+		return err;
+
+	br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
+	if (err)
+		return err;
+
+	if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
+		nbp_vlan_tunnel_info_flush(p);
+
+	if (tb[IFLA_BRPORT_COST]) {
+		err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
+		if (err)
+			return err;
+	}
+
+	if (tb[IFLA_BRPORT_PRIORITY]) {
+		err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
+		if (err)
+			return err;
+	}
+
+	if (tb[IFLA_BRPORT_STATE]) {
+		err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
+		if (err)
+			return err;
+	}
+
+	if (tb[IFLA_BRPORT_FLUSH])
+		br_fdb_delete_by_port(p->br, p, 0, 0);
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
+		u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
+
+		err = br_multicast_set_port_router(p, mcast_router);
+		if (err)
+			return err;
+	}
+#endif
+
+	if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
+		u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
+
+		if (fwd_mask & BR_GROUPFWD_MACPAUSE)
+			return -EINVAL;
+		p->group_fwd_mask = fwd_mask;
+	}
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
+			       BR_NEIGH_SUPPRESS);
+	if (err)
+		return err;
+
+	err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
+	if (err)
+		return err;
+
+	if (tb[IFLA_BRPORT_BACKUP_PORT]) {
+		struct net_device *backup_dev = NULL;
+		u32 backup_ifindex;
+
+		backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
+		if (backup_ifindex) {
+			backup_dev = __dev_get_by_index(dev_net(p->dev),
+							backup_ifindex);
+			if (!backup_dev)
+				return -ENOENT;
+		}
+
+		err = nbp_backup_change(p, backup_dev);
+		if (err)
+			return err;
+	}
+
+	br_port_flags_change(p, old_flags ^ p->flags);
+	return 0;
+}
+
+/* Change state and parameters on port. */
+int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
+{
+	struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
+	struct nlattr *tb[IFLA_BRPORT_MAX + 1];
+	struct net_bridge_port *p;
+	struct nlattr *protinfo;
+	struct nlattr *afspec;
+	bool changed = false;
+	int err = 0;
+
+	protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
+	afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+	if (!protinfo && !afspec)
+		return 0;
+
+	p = br_port_get_rtnl(dev);
+	/* We want to accept dev as bridge itself if the AF_SPEC
+	 * is set to see if someone is setting vlan info on the bridge
+	 */
+	if (!p && !afspec)
+		return -EINVAL;
+
+	if (p && protinfo) {
+		if (protinfo->nla_type & NLA_F_NESTED) {
+			err = nla_parse_nested(tb, IFLA_BRPORT_MAX, protinfo,
+					       br_port_policy, NULL);
+			if (err)
+				return err;
+
+			spin_lock_bh(&p->br->lock);
+			err = br_setport(p, tb);
+			spin_unlock_bh(&p->br->lock);
+		} else {
+			/* Binary compatibility with old RSTP */
+			if (nla_len(protinfo) < sizeof(u8))
+				return -EINVAL;
+
+			spin_lock_bh(&p->br->lock);
+			err = br_set_port_state(p, nla_get_u8(protinfo));
+			spin_unlock_bh(&p->br->lock);
+		}
+		if (err)
+			goto out;
+		changed = true;
+	}
+
+	if (afspec)
+		err = br_afspec(br, p, afspec, RTM_SETLINK, &changed);
+
+	if (changed)
+		br_ifinfo_notify(RTM_NEWLINK, br, p);
+out:
+	return err;
+}
+
+/* Delete port information */
+int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
+{
+	struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
+	struct net_bridge_port *p;
+	struct nlattr *afspec;
+	bool changed = false;
+	int err = 0;
+
+	afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+	if (!afspec)
+		return 0;
+
+	p = br_port_get_rtnl(dev);
+	/* We want to accept dev as bridge itself as well */
+	if (!p && !(dev->priv_flags & IFF_EBRIDGE))
+		return -EINVAL;
+
+	err = br_afspec(br, p, afspec, RTM_DELLINK, &changed);
+	if (changed)
+		/* Send RTM_NEWLINK because userspace
+		 * expects RTM_NEWLINK for vlan dels
+		 */
+		br_ifinfo_notify(RTM_NEWLINK, br, p);
+
+	return err;
+}
+
+static int br_validate(struct nlattr *tb[], struct nlattr *data[],
+		       struct netlink_ext_ack *extack)
+{
+	if (tb[IFLA_ADDRESS]) {
+		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
+			return -EINVAL;
+		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
+			return -EADDRNOTAVAIL;
+	}
+
+	if (!data)
+		return 0;
+
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+	if (data[IFLA_BR_VLAN_PROTOCOL]) {
+		switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
+		case htons(ETH_P_8021Q):
+		case htons(ETH_P_8021AD):
+			break;
+		default:
+			return -EPROTONOSUPPORT;
+		}
+	}
+
+	if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
+		__u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
+
+		if (defpvid >= VLAN_VID_MASK)
+			return -EINVAL;
+	}
+#endif
+
+	return 0;
+}
+
+static int br_port_slave_changelink(struct net_device *brdev,
+				    struct net_device *dev,
+				    struct nlattr *tb[],
+				    struct nlattr *data[],
+				    struct netlink_ext_ack *extack)
+{
+	struct net_bridge *br = netdev_priv(brdev);
+	int ret;
+
+	if (!data)
+		return 0;
+
+	spin_lock_bh(&br->lock);
+	ret = br_setport(br_port_get_rtnl(dev), data);
+	spin_unlock_bh(&br->lock);
+
+	return ret;
+}
+
+static int br_port_fill_slave_info(struct sk_buff *skb,
+				   const struct net_device *brdev,
+				   const struct net_device *dev)
+{
+	return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
+}
+
+static size_t br_port_get_slave_size(const struct net_device *brdev,
+				     const struct net_device *dev)
+{
+	return br_port_info_size();
+}
+
+static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
+	[IFLA_BR_FORWARD_DELAY]	= { .type = NLA_U32 },
+	[IFLA_BR_HELLO_TIME]	= { .type = NLA_U32 },
+	[IFLA_BR_MAX_AGE]	= { .type = NLA_U32 },
+	[IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
+	[IFLA_BR_STP_STATE] = { .type = NLA_U32 },
+	[IFLA_BR_PRIORITY] = { .type = NLA_U16 },
+	[IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
+	[IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
+	[IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
+	[IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
+				 .len  = ETH_ALEN },
+	[IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
+	[IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
+	[IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
+	[IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
+	[IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
+	[IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
+	[IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
+	[IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
+	[IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
+	[IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
+};
+
+static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
+			 struct nlattr *data[],
+			 struct netlink_ext_ack *extack)
+{
+	struct net_bridge *br = netdev_priv(brdev);
+	int err;
+
+	if (!data)
+		return 0;
+
+	if (data[IFLA_BR_FORWARD_DELAY]) {
+		err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_HELLO_TIME]) {
+		err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_MAX_AGE]) {
+		err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_AGEING_TIME]) {
+		err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_STP_STATE]) {
+		u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
+
+		br_stp_set_enabled(br, stp_enabled);
+	}
+
+	if (data[IFLA_BR_PRIORITY]) {
+		u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
+
+		br_stp_set_bridge_priority(br, priority);
+	}
+
+	if (data[IFLA_BR_VLAN_FILTERING]) {
+		u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
+
+		err = __br_vlan_filter_toggle(br, vlan_filter);
+		if (err)
+			return err;
+	}
+
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+	if (data[IFLA_BR_VLAN_PROTOCOL]) {
+		__be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
+
+		err = __br_vlan_set_proto(br, vlan_proto);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
+		__u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
+
+		err = __br_vlan_set_default_pvid(br, defpvid);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
+		__u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
+
+		err = br_vlan_set_stats(br, vlan_stats);
+		if (err)
+			return err;
+	}
+#endif
+
+	if (data[IFLA_BR_GROUP_FWD_MASK]) {
+		u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
+
+		if (fwd_mask & BR_GROUPFWD_RESTRICTED)
+			return -EINVAL;
+		br->group_fwd_mask = fwd_mask;
+	}
+
+	if (data[IFLA_BR_GROUP_ADDR]) {
+		u8 new_addr[ETH_ALEN];
+
+		if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
+			return -EINVAL;
+		memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
+		if (!is_link_local_ether_addr(new_addr))
+			return -EINVAL;
+		if (new_addr[5] == 1 ||		/* 802.3x Pause address */
+		    new_addr[5] == 2 ||		/* 802.3ad Slow protocols */
+		    new_addr[5] == 3)		/* 802.1X PAE address */
+			return -EINVAL;
+		spin_lock_bh(&br->lock);
+		memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
+		spin_unlock_bh(&br->lock);
+		br->group_addr_set = true;
+		br_recalculate_fwd_mask(br);
+	}
+
+	if (data[IFLA_BR_FDB_FLUSH])
+		br_fdb_flush(br);
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (data[IFLA_BR_MCAST_ROUTER]) {
+		u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
+
+		err = br_multicast_set_router(br, multicast_router);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_MCAST_SNOOPING]) {
+		u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
+
+		err = br_multicast_toggle(br, mcast_snooping);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
+		u8 val;
+
+		val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
+		br->multicast_query_use_ifaddr = !!val;
+	}
+
+	if (data[IFLA_BR_MCAST_QUERIER]) {
+		u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
+
+		err = br_multicast_set_querier(br, mcast_querier);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
+		u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
+
+		br->hash_elasticity = val;
+	}
+
+	if (data[IFLA_BR_MCAST_HASH_MAX]) {
+		u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
+
+		err = br_multicast_set_hash_max(br, hash_max);
+		if (err)
+			return err;
+	}
+
+	if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
+		u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
+
+		br->multicast_last_member_count = val;
+	}
+
+	if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
+		u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
+
+		br->multicast_startup_query_count = val;
+	}
+
+	if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
+
+		br->multicast_last_member_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
+
+		br->multicast_membership_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
+
+		br->multicast_querier_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
+
+		br->multicast_query_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
+
+		br->multicast_query_response_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
+		u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
+
+		br->multicast_startup_query_interval = clock_t_to_jiffies(val);
+	}
+
+	if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
+		__u8 mcast_stats;
+
+		mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
+		br->multicast_stats_enabled = !!mcast_stats;
+	}
+
+	if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
+		__u8 igmp_version;
+
+		igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
+		err = br_multicast_set_igmp_version(br, igmp_version);
+		if (err)
+			return err;
+	}
+
+#if IS_ENABLED(CONFIG_IPV6)
+	if (data[IFLA_BR_MCAST_MLD_VERSION]) {
+		__u8 mld_version;
+
+		mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
+		err = br_multicast_set_mld_version(br, mld_version);
+		if (err)
+			return err;
+	}
+#endif
+#endif
+#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
+	if (data[IFLA_BR_NF_CALL_IPTABLES]) {
+		u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
+
+		br->nf_call_iptables = val ? true : false;
+	}
+
+	if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
+		u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
+
+		br->nf_call_ip6tables = val ? true : false;
+	}
+
+	if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
+		u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
+
+		br->nf_call_arptables = val ? true : false;
+	}
+#endif
+
+	return 0;
+}
+
+static int br_dev_newlink(struct net *src_net, struct net_device *dev,
+			  struct nlattr *tb[], struct nlattr *data[],
+			  struct netlink_ext_ack *extack)
+{
+	struct net_bridge *br = netdev_priv(dev);
+	int err;
+
+	err = register_netdevice(dev);
+	if (err)
+		return err;
+
+	if (tb[IFLA_ADDRESS]) {
+		spin_lock_bh(&br->lock);
+		br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
+		spin_unlock_bh(&br->lock);
+	}
+
+	err = br_changelink(dev, tb, data, extack);
+	if (err)
+		br_dev_delete(dev, NULL);
+
+	return err;
+}
+
+static size_t br_get_size(const struct net_device *brdev)
+{
+	return nla_total_size(sizeof(u32)) +	/* IFLA_BR_FORWARD_DELAY  */
+	       nla_total_size(sizeof(u32)) +	/* IFLA_BR_HELLO_TIME */
+	       nla_total_size(sizeof(u32)) +	/* IFLA_BR_MAX_AGE */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_AGEING_TIME */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_STP_STATE */
+	       nla_total_size(sizeof(u16)) +    /* IFLA_BR_PRIORITY */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_FILTERING */
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+	       nla_total_size(sizeof(__be16)) +	/* IFLA_BR_VLAN_PROTOCOL */
+	       nla_total_size(sizeof(u16)) +    /* IFLA_BR_VLAN_DEFAULT_PVID */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_VLAN_STATS_ENABLED */
+#endif
+	       nla_total_size(sizeof(u16)) +    /* IFLA_BR_GROUP_FWD_MASK */
+	       nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_ROOT_ID */
+	       nla_total_size(sizeof(struct ifla_bridge_id)) +   /* IFLA_BR_BRIDGE_ID */
+	       nla_total_size(sizeof(u16)) +    /* IFLA_BR_ROOT_PORT */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_ROOT_PATH_COST */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
+	       nla_total_size(ETH_ALEN) +       /* IFLA_BR_GROUP_ADDR */
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_SNOOPING */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERIER */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_STATS_ENABLED */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_ELASTICITY */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_HASH_MAX */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
+	       nla_total_size(sizeof(u32)) +    /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
+	       nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
+	       nla_total_size(sizeof(u8)) +	/* IFLA_BR_MCAST_IGMP_VERSION */
+	       nla_total_size(sizeof(u8)) +	/* IFLA_BR_MCAST_MLD_VERSION */
+#endif
+#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IPTABLES */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_IP6TABLES */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_NF_CALL_ARPTABLES */
+#endif
+	       0;
+}
+
+static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
+{
+	struct net_bridge *br = netdev_priv(brdev);
+	u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
+	u32 hello_time = jiffies_to_clock_t(br->hello_time);
+	u32 age_time = jiffies_to_clock_t(br->max_age);
+	u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
+	u32 stp_enabled = br->stp_enabled;
+	u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
+	u8 vlan_enabled = br_vlan_enabled(br->dev);
+	u64 clockval;
+
+	clockval = br_timer_value(&br->hello_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = br_timer_value(&br->tcn_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = br_timer_value(&br->topology_change_timer);
+	if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = br_timer_value(&br->gc_work.timer);
+	if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
+		return -EMSGSIZE;
+
+	if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
+	    nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
+	    nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
+	    nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
+	    nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
+	    nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
+	    nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
+	    nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
+	    nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
+		    &br->bridge_id) ||
+	    nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
+		    &br->designated_root) ||
+	    nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
+	    nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
+	    nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
+	    nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
+		       br->topology_change_detected) ||
+	    nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
+		return -EMSGSIZE;
+
+#ifdef CONFIG_BRIDGE_VLAN_FILTERING
+	if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
+	    nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
+	    nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled))
+		return -EMSGSIZE;
+#endif
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
+		       br->multicast_query_use_ifaddr) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
+		       br->multicast_stats_enabled) ||
+	    nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
+			br->hash_elasticity) ||
+	    nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
+	    nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
+			br->multicast_last_member_count) ||
+	    nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
+			br->multicast_startup_query_count) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
+		       br->multicast_igmp_version))
+		return -EMSGSIZE;
+#if IS_ENABLED(CONFIG_IPV6)
+	if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
+		       br->multicast_mld_version))
+		return -EMSGSIZE;
+#endif
+	clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = jiffies_to_clock_t(br->multicast_membership_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = jiffies_to_clock_t(br->multicast_querier_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = jiffies_to_clock_t(br->multicast_query_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+	clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
+	if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
+			      IFLA_BR_PAD))
+		return -EMSGSIZE;
+#endif
+#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
+	if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
+		       br->nf_call_iptables ? 1 : 0) ||
+	    nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
+		       br->nf_call_ip6tables ? 1 : 0) ||
+	    nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
+		       br->nf_call_arptables ? 1 : 0))
+		return -EMSGSIZE;
+#endif
+
+	return 0;
+}
+
+static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
+{
+	struct net_bridge_port *p = NULL;
+	struct net_bridge_vlan_group *vg;
+	struct net_bridge_vlan *v;
+	struct net_bridge *br;
+	int numvls = 0;
+
+	switch (attr) {
+	case IFLA_STATS_LINK_XSTATS:
+		br = netdev_priv(dev);
+		vg = br_vlan_group(br);
+		break;
+	case IFLA_STATS_LINK_XSTATS_SLAVE:
+		p = br_port_get_rtnl(dev);
+		if (!p)
+			return 0;
+		br = p->br;
+		vg = nbp_vlan_group(p);
+		break;
+	default:
+		return 0;
+	}
+
+	if (vg) {
+		/* we need to count all, even placeholder entries */
+		list_for_each_entry(v, &vg->vlan_list, vlist)
+			numvls++;
+	}
+
+	return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
+	       nla_total_size_64bit(sizeof(struct br_mcast_stats)) +
+	       nla_total_size(0);
+}
+
+static int br_fill_linkxstats(struct sk_buff *skb,
+			      const struct net_device *dev,
+			      int *prividx, int attr)
+{
+	struct nlattr *nla __maybe_unused;
+	struct net_bridge_port *p = NULL;
+	struct net_bridge_vlan_group *vg;
+	struct net_bridge_vlan *v;
+	struct net_bridge *br;
+	struct nlattr *nest;
+	int vl_idx = 0;
+
+	switch (attr) {
+	case IFLA_STATS_LINK_XSTATS:
+		br = netdev_priv(dev);
+		vg = br_vlan_group(br);
+		break;
+	case IFLA_STATS_LINK_XSTATS_SLAVE:
+		p = br_port_get_rtnl(dev);
+		if (!p)
+			return 0;
+		br = p->br;
+		vg = nbp_vlan_group(p);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE);
+	if (!nest)
+		return -EMSGSIZE;
+
+	if (vg) {
+		u16 pvid;
+
+		pvid = br_get_pvid(vg);
+		list_for_each_entry(v, &vg->vlan_list, vlist) {
+			struct bridge_vlan_xstats vxi;
+			struct br_vlan_stats stats;
+
+			if (++vl_idx < *prividx)
+				continue;
+			memset(&vxi, 0, sizeof(vxi));
+			vxi.vid = v->vid;
+			vxi.flags = v->flags;
+			if (v->vid == pvid)
+				vxi.flags |= BRIDGE_VLAN_INFO_PVID;
+			br_vlan_get_stats(v, &stats);
+			vxi.rx_bytes = stats.rx_bytes;
+			vxi.rx_packets = stats.rx_packets;
+			vxi.tx_bytes = stats.tx_bytes;
+			vxi.tx_packets = stats.tx_packets;
+
+			if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
+				goto nla_put_failure;
+		}
+	}
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	if (++vl_idx >= *prividx) {
+		nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
+					sizeof(struct br_mcast_stats),
+					BRIDGE_XSTATS_PAD);
+		if (!nla)
+			goto nla_put_failure;
+		br_multicast_get_stats(br, p, nla_data(nla));
+	}
+#endif
+	nla_nest_end(skb, nest);
+	*prividx = 0;
+
+	return 0;
+
+nla_put_failure:
+	nla_nest_end(skb, nest);
+	*prividx = vl_idx;
+
+	return -EMSGSIZE;
+}
+
+static struct rtnl_af_ops br_af_ops __read_mostly = {
+	.family			= AF_BRIDGE,
+	.get_link_af_size	= br_get_link_af_size_filtered,
+};
+
+struct rtnl_link_ops br_link_ops __read_mostly = {
+	.kind			= "bridge",
+	.priv_size		= sizeof(struct net_bridge),
+	.setup			= br_dev_setup,
+	.maxtype		= IFLA_BR_MAX,
+	.policy			= br_policy,
+	.validate		= br_validate,
+	.newlink		= br_dev_newlink,
+	.changelink		= br_changelink,
+	.dellink		= br_dev_delete,
+	.get_size		= br_get_size,
+	.fill_info		= br_fill_info,
+	.fill_linkxstats	= br_fill_linkxstats,
+	.get_linkxstats_size	= br_get_linkxstats_size,
+
+	.slave_maxtype		= IFLA_BRPORT_MAX,
+	.slave_policy		= br_port_policy,
+	.slave_changelink	= br_port_slave_changelink,
+	.get_slave_size		= br_port_get_slave_size,
+	.fill_slave_info	= br_port_fill_slave_info,
+};
+
+int __init br_netlink_init(void)
+{
+	int err;
+
+	br_mdb_init();
+	rtnl_af_register(&br_af_ops);
+
+	err = rtnl_link_register(&br_link_ops);
+	if (err)
+		goto out_af;
+
+	return 0;
+
+out_af:
+	rtnl_af_unregister(&br_af_ops);
+	br_mdb_uninit();
+	return err;
+}
+
+void br_netlink_fini(void)
+{
+	br_mdb_uninit();
+	rtnl_af_unregister(&br_af_ops);
+	rtnl_link_unregister(&br_link_ops);
+}