Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Reasonably busy this cycle, but perhaps not as busy as in the 4.12
  merge window:

   1) Several optimizations for UDP processing under high load from
      Paolo Abeni.

   2) Support pacing internally in TCP when using the sch_fq packet
      scheduler for this is not practical. From Eric Dumazet.

   3) Support mutliple filter chains per qdisc, from Jiri Pirko.

   4) Move to 1ms TCP timestamp clock, from Eric Dumazet.

   5) Add batch dequeueing to vhost_net, from Jason Wang.

   6) Flesh out more completely SCTP checksum offload support, from
      Davide Caratti.

   7) More plumbing of extended netlink ACKs, from David Ahern, Pablo
      Neira Ayuso, and Matthias Schiffer.

   8) Add devlink support to nfp driver, from Simon Horman.

   9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa
      Prabhu.

  10) Add stack depth tracking to BPF verifier and use this information
      in the various eBPF JITs. From Alexei Starovoitov.

  11) Support XDP on qed device VFs, from Yuval Mintz.

  12) Introduce BPF PROG ID for better introspection of installed BPF
      programs. From Martin KaFai Lau.

  13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann.

  14) For loads, allow narrower accesses in bpf verifier checking, from
      Yonghong Song.

  15) Support MIPS in the BPF selftests and samples infrastructure, the
      MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David
      Daney.

  16) Support kernel based TLS, from Dave Watson and others.

  17) Remove completely DST garbage collection, from Wei Wang.

  18) Allow installing TCP MD5 rules using prefixes, from Ivan
      Delalande.

  19) Add XDP support to Intel i40e driver, from Björn Töpel

  20) Add support for TC flower offload in nfp driver, from Simon
      Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub
      Kicinski, and Bert van Leeuwen.

  21) IPSEC offloading support in mlx5, from Ilan Tayari.

  22) Add HW PTP support to macb driver, from Rafal Ozieblo.

  23) Networking refcount_t conversions, From Elena Reshetova.

  24) Add sock_ops support to BPF, from Lawrence Brako. This is useful
      for tuning the TCP sockopt settings of a group of applications,
      currently via CGROUPs"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits)
  net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap
  dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap
  cxgb4: Support for get_ts_info ethtool method
  cxgb4: Add PTP Hardware Clock (PHC) support
  cxgb4: time stamping interface for PTP
  nfp: default to chained metadata prepend format
  nfp: remove legacy MAC address lookup
  nfp: improve order of interfaces in breakout mode
  net: macb: remove extraneous return when MACB_EXT_DESC is defined
  bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case
  bpf: fix return in load_bpf_file
  mpls: fix rtm policy in mpls_getroute
  net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_route.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t
  net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t
  ...

18 files changed, 276 insertions, 95 deletions

diff --git a/net/bridge/br.c b/net/bridge/br.c
index 889e564..1407d1b 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -121,7 +121,7 @@ static struct notifier_block br_device_notifier = {
 	.notifier_call = br_device_event
 };
 
-/* called with RTNL */
+/* called with RTNL or RCU */
 static int br_switchdev_event(struct notifier_block *unused,
 			      unsigned long event, void *ptr)
 {
@@ -131,27 +131,36 @@ static int br_switchdev_event(struct notifier_block *unused,
 	struct switchdev_notifier_fdb_info *fdb_info;
 	int err = NOTIFY_DONE;
 
-	p = br_port_get_rtnl(dev);
+	p = br_port_get_rtnl_rcu(dev);
 	if (!p)
 		goto out;
 
 	br = p->br;
 
 	switch (event) {
-	case SWITCHDEV_FDB_ADD:
+	case SWITCHDEV_FDB_ADD_TO_BRIDGE:
 		fdb_info = ptr;
 		err = br_fdb_external_learn_add(br, p, fdb_info->addr,
 						fdb_info->vid);
-		if (err)
+		if (err) {
 			err = notifier_from_errno(err);
+			break;
+		}
+		br_fdb_offloaded_set(br, p, fdb_info->addr,
+				     fdb_info->vid);
 		break;
-	case SWITCHDEV_FDB_DEL:
+	case SWITCHDEV_FDB_DEL_TO_BRIDGE:
 		fdb_info = ptr;
 		err = br_fdb_external_learn_del(br, p, fdb_info->addr,
 						fdb_info->vid);
 		if (err)
 			err = notifier_from_errno(err);
 		break;
+	case SWITCHDEV_FDB_OFFLOADED:
+		fdb_info = ptr;
+		br_fdb_offloaded_set(br, p, fdb_info->addr,
+				     fdb_info->vid);
+		break;
 	}
 
 out:
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index ab0c7cc..a5e4a73 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -511,6 +511,7 @@ static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head,
 		fdb->is_static = is_static;
 		fdb->added_by_user = 0;
 		fdb->added_by_external_learn = 0;
+		fdb->offloaded = 0;
 		fdb->updated = fdb->used = jiffies;
 		hlist_add_head_rcu(&fdb->hlist, head);
 	}
@@ -647,11 +648,16 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
 	ndm->ndm_family	 = AF_BRIDGE;
 	ndm->ndm_pad1    = 0;
 	ndm->ndm_pad2    = 0;
-	ndm->ndm_flags	 = fdb->added_by_external_learn ? NTF_EXT_LEARNED : 0;
+	ndm->ndm_flags	 = 0;
 	ndm->ndm_type	 = 0;
 	ndm->ndm_ifindex = fdb->dst ? fdb->dst->dev->ifindex : br->dev->ifindex;
 	ndm->ndm_state   = fdb_to_nud(br, fdb);
 
+	if (fdb->offloaded)
+		ndm->ndm_flags |= NTF_OFFLOADED;
+	if (fdb->added_by_external_learn)
+		ndm->ndm_flags |= NTF_EXT_LEARNED;
+
 	if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->addr))
 		goto nla_put_failure;
 	if (nla_put_u32(skb, NDA_MASTER, br->dev->ifindex))
@@ -690,6 +696,8 @@ static void fdb_notify(struct net_bridge *br,
 	struct sk_buff *skb;
 	int err = -ENOBUFS;
 
+	br_switchdev_fdb_notify(fdb, type);
+
 	skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
 	if (skb == NULL)
 		goto errout;
@@ -1071,11 +1079,11 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid)
 {
-	struct hlist_head *head;
 	struct net_bridge_fdb_entry *fdb;
+	struct hlist_head *head;
+	bool modified = false;
 	int err = 0;
 
-	ASSERT_RTNL();
 	spin_lock_bh(&br->hash_lock);
 
 	head = &br->hash[br_mac_hash(addr, vid)];
@@ -1088,14 +1096,25 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 		}
 		fdb->added_by_external_learn = 1;
 		fdb_notify(br, fdb, RTM_NEWNEIGH);
-	} else if (fdb->added_by_external_learn) {
-		/* Refresh entry */
-		fdb->updated = fdb->used = jiffies;
-	} else if (!fdb->added_by_user) {
-		/* Take over SW learned entry */
-		fdb->added_by_external_learn = 1;
+	} else {
 		fdb->updated = jiffies;
-		fdb_notify(br, fdb, RTM_NEWNEIGH);
+
+		if (fdb->dst != p) {
+			fdb->dst = p;
+			modified = true;
+		}
+
+		if (fdb->added_by_external_learn) {
+			/* Refresh entry */
+			fdb->used = jiffies;
+		} else if (!fdb->added_by_user) {
+			/* Take over SW learned entry */
+			fdb->added_by_external_learn = 1;
+			modified = true;
+		}
+
+		if (modified)
+			fdb_notify(br, fdb, RTM_NEWNEIGH);
 	}
 
 err_unlock:
@@ -1110,7 +1129,6 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 	struct net_bridge_fdb_entry *fdb;
 	int err = 0;
 
-	ASSERT_RTNL();
 	spin_lock_bh(&br->hash_lock);
 
 	fdb = br_fdb_find(br, addr, vid);
@@ -1123,3 +1141,17 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 
 	return err;
 }
+
+void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
+			  const unsigned char *addr, u16 vid)
+{
+	struct net_bridge_fdb_entry *fdb;
+
+	spin_lock_bh(&br->hash_lock);
+
+	fdb = br_fdb_find(br, addr, vid);
+	if (fdb)
+		fdb->offloaded = 1;
+
+	spin_unlock_bh(&br->hash_lock);
+}
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 7f8d05c..f3aef22 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -138,7 +138,7 @@ void br_manage_promisc(struct net_bridge *br)
 	/* If vlan filtering is disabled or bridge interface is placed
 	 * into promiscuous mode, place all ports in promiscuous mode.
 	 */
-	if ((br->dev->flags & IFF_PROMISC) || !br_vlan_enabled(br))
+	if ((br->dev->flags & IFF_PROMISC) || !br_vlan_enabled(br->dev))
 		set_all = true;
 
 	list_for_each_entry(p, &br->port_list, list) {
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index b084548..09dcdb9 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -599,7 +599,7 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	vg = nbp_vlan_group(p);
-	if (br_vlan_enabled(br) && vg && entry->vid == 0) {
+	if (br_vlan_enabled(br->dev) && vg && entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			entry->vid = v->vid;
 			err = __br_mdb_add(net, br, entry);
@@ -694,7 +694,7 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	vg = nbp_vlan_group(p);
-	if (br_vlan_enabled(br) && vg && entry->vid == 0) {
+	if (br_vlan_enabled(br->dev) && vg && entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			entry->vid = v->vid;
 			err = __br_mdb_del(br, entry);
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index faa7261..8dc5c8d 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2176,6 +2176,14 @@ unlock:
 	return err;
 }
 
+bool br_multicast_enabled(const struct net_device *dev)
+{
+	struct net_bridge *br = netdev_priv(dev);
+
+	return !br->multicast_disabled;
+}
+EXPORT_SYMBOL_GPL(br_multicast_enabled);
+
 int br_multicast_set_querier(struct net_bridge *br, unsigned long val)
 {
 	unsigned long max_delay;
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 067cf03..2261e51 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -149,12 +149,12 @@ static inline struct nf_bridge_info *nf_bridge_unshare(struct sk_buff *skb)
 {
 	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
 
-	if (atomic_read(&nf_bridge->use) > 1) {
+	if (refcount_read(&nf_bridge->use) > 1) {
 		struct nf_bridge_info *tmp = nf_bridge_alloc(skb);
 
 		if (tmp) {
 			memcpy(tmp, nf_bridge, sizeof(struct nf_bridge_info));
-			atomic_set(&tmp->use, 1);
+			refcount_set(&tmp->use, 1);
 		}
 		nf_bridge_put(nf_bridge);
 		nf_bridge = tmp;
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 32bd3ea..3bc8907 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -662,16 +662,26 @@ static int br_set_port_state(struct net_bridge_port *p, u8 state)
 }
 
 /* Set/clear or port flags based on attribute */
-static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
-			   int attrtype, unsigned long mask)
+static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
+			    int attrtype, unsigned long mask)
 {
-	if (tb[attrtype]) {
-		u8 flag = nla_get_u8(tb[attrtype]);
-		if (flag)
-			p->flags |= mask;
-		else
-			p->flags &= ~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 */
@@ -681,20 +691,55 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 	bool br_vlan_tunnel_old = false;
 	int err;
 
-	br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
-	br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
-	br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
-	br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
-	br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
-	br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
-	br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
-	br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
-	br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
-	br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
-	br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
+	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;
-	br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
+	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);
 
@@ -813,7 +858,9 @@ int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
 
 	return err;
 }
-static int br_validate(struct nlattr *tb[], struct nlattr *data[])
+
+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)
@@ -850,7 +897,8 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[])
 static int br_port_slave_changelink(struct net_device *brdev,
 				    struct net_device *dev,
 				    struct nlattr *tb[],
-				    struct nlattr *data[])
+				    struct nlattr *data[],
+				    struct netlink_ext_ack *extack)
 {
 	struct net_bridge *br = netdev_priv(brdev);
 	int ret;
@@ -915,7 +963,8 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
 };
 
 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
-			 struct nlattr *data[])
+			 struct nlattr *data[],
+			 struct netlink_ext_ack *extack)
 {
 	struct net_bridge *br = netdev_priv(brdev);
 	int err;
@@ -1168,7 +1217,8 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
 }
 
 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
-			  struct nlattr *tb[], struct nlattr *data[])
+			  struct nlattr *tb[], struct nlattr *data[],
+			  struct netlink_ext_ack *extack)
 {
 	struct net_bridge *br = netdev_priv(dev);
 	int err;
@@ -1183,7 +1233,7 @@ static int br_dev_newlink(struct net *src_net, struct net_device *dev,
 	if (err)
 		return err;
 
-	err = br_changelink(dev, tb, data);
+	err = br_changelink(dev, tb, data, extack);
 	if (err)
 		unregister_netdevice(dev);
 	return err;
@@ -1251,7 +1301,7 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
 	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);
+	u8 vlan_enabled = br_vlan_enabled(br->dev);
 	u64 clockval;
 
 	clockval = br_timer_value(&br->hello_timer);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 0d17728..fd9ee73 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -21,6 +21,7 @@
 #include <net/ip6_fib.h>
 #include <linux/if_vlan.h>
 #include <linux/rhashtable.h>
+#include <linux/refcount.h>
 
 #define BR_HASH_BITS 8
 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
@@ -127,7 +128,7 @@ struct net_bridge_vlan {
 		struct net_bridge_port	*port;
 	};
 	union {
-		atomic_t		refcnt;
+		refcount_t		refcnt;
 		struct net_bridge_vlan	*brvlan;
 	};
 
@@ -169,7 +170,8 @@ struct net_bridge_fdb_entry {
 	unsigned char			is_local:1,
 					is_static:1,
 					added_by_user:1,
-					added_by_external_learn:1;
+					added_by_external_learn:1,
+					offloaded:1;
 
 	/* write-heavy members should not affect lookups */
 	unsigned long			updated ____cacheline_aligned_in_smp;
@@ -284,6 +286,12 @@ static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *
 		rtnl_dereference(dev->rx_handler_data) : NULL;
 }
 
+static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
+{
+	return br_port_exists(dev) ?
+		rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
+}
+
 struct net_bridge {
 	spinlock_t			lock;
 	spinlock_t			hash_lock;
@@ -530,6 +538,8 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid);
 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid);
+void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
+			  const unsigned char *addr, u16 vid);
 
 /* br_forward.c */
 enum br_pkt_type {
@@ -854,10 +864,6 @@ static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
 	return vg->pvid;
 }
 
-static inline int br_vlan_enabled(struct net_bridge *br)
-{
-	return br->vlan_enabled;
-}
 #else
 static inline bool br_allowed_ingress(const struct net_bridge *br,
 				      struct net_bridge_vlan_group *vg,
@@ -945,11 +951,6 @@ static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
 	return 0;
 }
 
-static inline int br_vlan_enabled(struct net_bridge *br)
-{
-	return 0;
-}
-
 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
 					  unsigned long val)
 {
@@ -1085,6 +1086,11 @@ void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
 			      struct sk_buff *skb);
 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
 				  const struct sk_buff *skb);
+int br_switchdev_set_port_flag(struct net_bridge_port *p,
+			       unsigned long flags,
+			       unsigned long mask);
+void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
+			     int type);
 #else
 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
 {
@@ -1101,6 +1107,18 @@ static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
 {
 	return true;
 }
+
+static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
+					     unsigned long flags,
+					     unsigned long mask)
+{
+	return 0;
+}
+
+static inline void
+br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
+{
+}
 #endif /* CONFIG_NET_SWITCHDEV */
 
 #endif
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 5881fbc..1b75d6b 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -50,7 +50,7 @@ static void br_send_bpdu(struct net_bridge_port *p,
 	skb->priority = TC_PRIO_CONTROL;
 
 	skb_reserve(skb, LLC_RESERVE);
-	memcpy(__skb_put(skb, length), data, length);
+	__skb_put_data(skb, data, length);
 
 	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, LLC_SAP_BSPAN,
 			    LLC_SAP_BSPAN, LLC_PDU_CMD);
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 6f12a52..8911031 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -150,7 +150,6 @@ static int br_stp_call_user(struct net_bridge *br, char *arg)
 
 static void br_stp_start(struct net_bridge *br)
 {
-	struct net_bridge_port *p;
 	int err = -ENOENT;
 
 	if (net_eq(dev_net(br->dev), &init_net))
@@ -169,11 +168,6 @@ static void br_stp_start(struct net_bridge *br)
 	if (!err) {
 		br->stp_enabled = BR_USER_STP;
 		br_debug(br, "userspace STP started\n");
-
-		/* Stop hello and hold timers */
-		del_timer(&br->hello_timer);
-		list_for_each_entry(p, &br->port_list, list)
-			del_timer(&p->hold_timer);
 	} else {
 		br->stp_enabled = BR_KERNEL_STP;
 		br_debug(br, "using kernel STP\n");
@@ -189,7 +183,6 @@ static void br_stp_start(struct net_bridge *br)
 
 static void br_stp_stop(struct net_bridge *br)
 {
-	struct net_bridge_port *p;
 	int err;
 
 	if (br->stp_enabled == BR_USER_STP) {
@@ -198,10 +191,6 @@ static void br_stp_stop(struct net_bridge *br)
 			br_err(br, "failed to stop userspace STP (%d)\n", err);
 
 		/* To start timers on any ports left in blocking */
-		mod_timer(&br->hello_timer, jiffies + br->hello_time);
-		list_for_each_entry(p, &br->port_list, list)
-			mod_timer(&p->hold_timer,
-				  round_jiffies(jiffies + BR_HOLD_TIME));
 		spin_lock_bh(&br->lock);
 		br_port_state_selection(br);
 		spin_unlock_bh(&br->lock);
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index f4097b9..181a44d 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -55,3 +55,79 @@ bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
 	return !skb->offload_fwd_mark ||
 	       BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark;
 }
+
+/* Flags that can be offloaded to hardware */
+#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
+				  BR_MCAST_FLOOD | BR_BCAST_FLOOD)
+
+int br_switchdev_set_port_flag(struct net_bridge_port *p,
+			       unsigned long flags,
+			       unsigned long mask)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+		.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
+	};
+	int err;
+
+	if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD)
+		return 0;
+
+	err = switchdev_port_attr_get(p->dev, &attr);
+	if (err == -EOPNOTSUPP)
+		return 0;
+	if (err)
+		return err;
+
+	/* Check if specific bridge flag attribute offload is supported */
+	if (!(attr.u.brport_flags_support & mask)) {
+		br_warn(p->br, "bridge flag offload is not supported %u(%s)\n",
+			(unsigned int)p->port_no, p->dev->name);
+		return -EOPNOTSUPP;
+	}
+
+	attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
+	attr.flags = SWITCHDEV_F_DEFER;
+	attr.u.brport_flags = flags;
+	err = switchdev_port_attr_set(p->dev, &attr);
+	if (err) {
+		br_warn(p->br, "error setting offload flag on port %u(%s)\n",
+			(unsigned int)p->port_no, p->dev->name);
+		return err;
+	}
+
+	return 0;
+}
+
+static void
+br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
+				u16 vid, struct net_device *dev)
+{
+	struct switchdev_notifier_fdb_info info;
+	unsigned long notifier_type;
+
+	info.addr = mac;
+	info.vid = vid;
+	notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
+	call_switchdev_notifiers(notifier_type, dev, &info.info);
+}
+
+void
+br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
+{
+	if (!fdb->added_by_user)
+		return;
+
+	switch (type) {
+	case RTM_DELNEIGH:
+		br_switchdev_fdb_call_notifiers(false, fdb->addr.addr,
+						fdb->vlan_id,
+						fdb->dst->dev);
+		break;
+	case RTM_NEWNEIGH:
+		br_switchdev_fdb_call_notifiers(true, fdb->addr.addr,
+						fdb->vlan_id,
+						fdb->dst->dev);
+		break;
+	}
+}
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 0b5dd60..723f25e 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -865,7 +865,7 @@ static struct attribute *bridge_attrs[] = {
 	NULL
 };
 
-static struct attribute_group bridge_group = {
+static const struct attribute_group bridge_group = {
 	.name = SYSFS_BRIDGE_ATTR,
 	.attrs = bridge_attrs,
 };
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index b838213..233a300 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -158,7 +158,7 @@ static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid
 		if (WARN_ON(!masterv))
 			return NULL;
 	}
-	atomic_inc(&masterv->refcnt);
+	refcount_inc(&masterv->refcnt);
 
 	return masterv;
 }
@@ -182,7 +182,7 @@ static void br_vlan_put_master(struct net_bridge_vlan *masterv)
 		return;
 
 	vg = br_vlan_group(masterv->br);
-	if (atomic_dec_and_test(&masterv->refcnt)) {
+	if (refcount_dec_and_test(&masterv->refcnt)) {
 		rhashtable_remove_fast(&vg->vlan_hash,
 				       &masterv->vnode, br_vlan_rht_params);
 		__vlan_del_list(masterv);
@@ -573,7 +573,7 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
 				br_err(br, "failed insert local address into bridge forwarding table\n");
 				return ret;
 			}
-			atomic_inc(&vlan->refcnt);
+			refcount_inc(&vlan->refcnt);
 			vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
 			vg->num_vlans++;
 		}
@@ -595,7 +595,7 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
 	vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
 	vlan->br = br;
 	if (flags & BRIDGE_VLAN_INFO_BRENTRY)
-		atomic_set(&vlan->refcnt, 1);
+		refcount_set(&vlan->refcnt, 1);
 	ret = __vlan_add(vlan, flags);
 	if (ret) {
 		free_percpu(vlan->stats);
@@ -706,6 +706,14 @@ int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
 	return __br_vlan_filter_toggle(br, val);
 }
 
+bool br_vlan_enabled(const struct net_device *dev)
+{
+	struct net_bridge *br = netdev_priv(dev);
+
+	return !!br->vlan_enabled;
+}
+EXPORT_SYMBOL_GPL(br_vlan_enabled);
+
 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
 {
 	int err = 0;
diff --git a/net/bridge/netfilter/ebt_dnat.c b/net/bridge/netfilter/ebt_dnat.c
index e0bb624c..dfc86a0 100644
--- a/net/bridge/netfilter/ebt_dnat.c
+++ b/net/bridge/netfilter/ebt_dnat.c
@@ -61,7 +61,7 @@ static int ebt_dnat_tg_check(const struct xt_tgchk_param *par)
 	    (strcmp(par->table, "broute") != 0 ||
 	    hook_mask & ~(1 << NF_BR_BROUTING)))
 		return -EINVAL;
-	if (INVALID_TARGET)
+	if (ebt_invalid_target(info->target))
 		return -EINVAL;
 	return 0;
 }
diff --git a/net/bridge/netfilter/ebt_mark.c b/net/bridge/netfilter/ebt_mark.c
index 66697cb..19f0f95 100644
--- a/net/bridge/netfilter/ebt_mark.c
+++ b/net/bridge/netfilter/ebt_mark.c
@@ -44,7 +44,7 @@ static int ebt_mark_tg_check(const struct xt_tgchk_param *par)
 	tmp = info->target | ~EBT_VERDICT_BITS;
 	if (BASE_CHAIN && tmp == EBT_RETURN)
 		return -EINVAL;
-	if (tmp < -NUM_STANDARD_TARGETS || tmp >= 0)
+	if (ebt_invalid_target(tmp))
 		return -EINVAL;
 	tmp = info->target & ~EBT_VERDICT_BITS;
 	if (tmp != MARK_SET_VALUE && tmp != MARK_OR_VALUE &&
diff --git a/net/bridge/netfilter/ebt_redirect.c b/net/bridge/netfilter/ebt_redirect.c
index 8d2a85e..a7223ea 100644
--- a/net/bridge/netfilter/ebt_redirect.c
+++ b/net/bridge/netfilter/ebt_redirect.c
@@ -47,7 +47,7 @@ static int ebt_redirect_tg_check(const struct xt_tgchk_param *par)
 	    (strcmp(par->table, "broute") != 0 ||
 	    hook_mask & ~(1 << NF_BR_BROUTING)))
 		return -EINVAL;
-	if (INVALID_TARGET)
+	if (ebt_invalid_target(info->target))
 		return -EINVAL;
 	return 0;
 }
diff --git a/net/bridge/netfilter/ebt_snat.c b/net/bridge/netfilter/ebt_snat.c
index e56ccd0..11cf9e9 100644
--- a/net/bridge/netfilter/ebt_snat.c
+++ b/net/bridge/netfilter/ebt_snat.c
@@ -51,7 +51,7 @@ static int ebt_snat_tg_check(const struct xt_tgchk_param *par)
 	if (BASE_CHAIN && tmp == EBT_RETURN)
 		return -EINVAL;
 
-	if (tmp < -NUM_STANDARD_TARGETS || tmp >= 0)
+	if (ebt_invalid_target(tmp))
 		return -EINVAL;
 	tmp = info->target | EBT_VERDICT_BITS;
 	if ((tmp & ~NAT_ARP_BIT) != ~NAT_ARP_BIT)
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 346ef6b..eaf05de 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -28,7 +28,7 @@ static void nft_reject_br_push_etherhdr(struct sk_buff *oldskb,
 {
 	struct ethhdr *eth;
 
-	eth = (struct ethhdr *)skb_push(nskb, ETH_HLEN);
+	eth = skb_push(nskb, ETH_HLEN);
 	skb_reset_mac_header(nskb);
 	ether_addr_copy(eth->h_source, eth_hdr(oldskb)->h_dest);
 	ether_addr_copy(eth->h_dest, eth_hdr(oldskb)->h_source);
@@ -107,11 +107,10 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 	struct iphdr *niph;
 	struct icmphdr *icmph;
 	unsigned int len;
-	void *payload;
 	__wsum csum;
 	u8 proto;
 
-	if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
+	if (!nft_bridge_iphdr_validate(oldskb))
 		return;
 
 	/* IP header checks: fragment. */
@@ -147,13 +146,11 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 				   net->ipv4.sysctl_ip_default_ttl);
 
 	skb_reset_transport_header(nskb);
-	icmph = (struct icmphdr *)skb_put(nskb, sizeof(struct icmphdr));
-	memset(icmph, 0, sizeof(*icmph));
+	icmph = skb_put_zero(nskb, sizeof(struct icmphdr));
 	icmph->type     = ICMP_DEST_UNREACH;
 	icmph->code	= code;
 
-	payload = skb_put(nskb, len);
-	memcpy(payload, skb_network_header(oldskb), len);
+	skb_put_data(nskb, skb_network_header(oldskb), len);
 
 	csum = csum_partial((void *)icmph, len + sizeof(struct icmphdr), 0);
 	icmph->checksum = csum_fold(csum);
@@ -226,9 +223,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto = ip6h->nexthdr;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
@@ -252,7 +246,6 @@ static void nft_reject_br_send_v6_unreach(struct net *net,
 	struct ipv6hdr *nip6h;
 	struct icmp6hdr *icmp6h;
 	unsigned int len;
-	void *payload;
 
 	if (!nft_bridge_ip6hdr_validate(oldskb))
 		return;
@@ -278,13 +271,11 @@ static void nft_reject_br_send_v6_unreach(struct net *net,
 				     net->ipv6.devconf_all->hop_limit);
 
 	skb_reset_transport_header(nskb);
-	icmp6h = (struct icmp6hdr *)skb_put(nskb, sizeof(struct icmp6hdr));
-	memset(icmp6h, 0, sizeof(*icmp6h));
+	icmp6h = skb_put_zero(nskb, sizeof(struct icmp6hdr));
 	icmp6h->icmp6_type = ICMPV6_DEST_UNREACH;
 	icmp6h->icmp6_code = code;
 
-	payload = skb_put(nskb, len);
-	memcpy(payload, skb_network_header(oldskb), len);
+	skb_put_data(nskb, skb_network_header(oldskb), len);
 	nip6h->payload_len = htons(nskb->len - sizeof(struct ipv6hdr));
 
 	icmp6h->icmp6_cksum =