Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 816 insertions, 0 deletions

diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
new file mode 100644
index 000000000..de18e9c1d
--- /dev/null
+++ b/net/bridge/br_switchdev.c
@@ -0,0 +1,816 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/skbuff.h>
+#include <net/ip.h>
+#include <net/switchdev.h>
+
+#include "br_private.h"
+
+static struct static_key_false br_switchdev_tx_fwd_offload;
+
+static bool nbp_switchdev_can_offload_tx_fwd(const struct net_bridge_port *p,
+					     const struct sk_buff *skb)
+{
+	if (!static_branch_unlikely(&br_switchdev_tx_fwd_offload))
+		return false;
+
+	return (p->flags & BR_TX_FWD_OFFLOAD) &&
+	       (p->hwdom != BR_INPUT_SKB_CB(skb)->src_hwdom);
+}
+
+bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
+{
+	if (!static_branch_unlikely(&br_switchdev_tx_fwd_offload))
+		return false;
+
+	return BR_INPUT_SKB_CB(skb)->tx_fwd_offload;
+}
+
+void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
+{
+	skb->offload_fwd_mark = br_switchdev_frame_uses_tx_fwd_offload(skb);
+}
+
+/* Mark the frame for TX forwarding offload if this egress port supports it */
+void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
+					     struct sk_buff *skb)
+{
+	if (nbp_switchdev_can_offload_tx_fwd(p, skb))
+		BR_INPUT_SKB_CB(skb)->tx_fwd_offload = true;
+}
+
+/* Lazily adds the hwdom of the egress bridge port to the bit mask of hwdoms
+ * that the skb has been already forwarded to, to avoid further cloning to
+ * other ports in the same hwdom by making nbp_switchdev_allowed_egress()
+ * return false.
+ */
+void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
+					      struct sk_buff *skb)
+{
+	if (nbp_switchdev_can_offload_tx_fwd(p, skb))
+		set_bit(p->hwdom, &BR_INPUT_SKB_CB(skb)->fwd_hwdoms);
+}
+
+void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
+			      struct sk_buff *skb)
+{
+	if (p->hwdom)
+		BR_INPUT_SKB_CB(skb)->src_hwdom = p->hwdom;
+}
+
+bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
+				  const struct sk_buff *skb)
+{
+	struct br_input_skb_cb *cb = BR_INPUT_SKB_CB(skb);
+
+	return !test_bit(p->hwdom, &cb->fwd_hwdoms) &&
+		(!skb->offload_fwd_mark || cb->src_hwdom != p->hwdom);
+}
+
+/* Flags that can be offloaded to hardware */
+#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | BR_PORT_MAB | \
+				  BR_MCAST_FLOOD | BR_BCAST_FLOOD | BR_PORT_LOCKED | \
+				  BR_HAIRPIN_MODE | BR_ISOLATED | BR_MULTICAST_TO_UNICAST)
+
+int br_switchdev_set_port_flag(struct net_bridge_port *p,
+			       unsigned long flags,
+			       unsigned long mask,
+			       struct netlink_ext_ack *extack)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+	};
+	struct switchdev_notifier_port_attr_info info = {
+		.attr = &attr,
+	};
+	int err;
+
+	mask &= BR_PORT_FLAGS_HW_OFFLOAD;
+	if (!mask)
+		return 0;
+
+	attr.id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS;
+	attr.u.brport_flags.val = flags;
+	attr.u.brport_flags.mask = mask;
+
+	/* We run from atomic context here */
+	err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev,
+				       &info.info, extack);
+	err = notifier_to_errno(err);
+	if (err == -EOPNOTSUPP)
+		return 0;
+
+	if (err) {
+		NL_SET_ERR_MSG_WEAK_MOD(extack,
+					"bridge flag offload is not supported");
+		return -EOPNOTSUPP;
+	}
+
+	attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
+	attr.flags = SWITCHDEV_F_DEFER;
+
+	err = switchdev_port_attr_set(p->dev, &attr, extack);
+	if (err) {
+		NL_SET_ERR_MSG_WEAK_MOD(extack,
+					"error setting offload flag on port");
+		return err;
+	}
+
+	return 0;
+}
+
+static void br_switchdev_fdb_populate(struct net_bridge *br,
+				      struct switchdev_notifier_fdb_info *item,
+				      const struct net_bridge_fdb_entry *fdb,
+				      const void *ctx)
+{
+	const struct net_bridge_port *p = READ_ONCE(fdb->dst);
+
+	item->addr = fdb->key.addr.addr;
+	item->vid = fdb->key.vlan_id;
+	item->added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
+	item->offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags);
+	item->is_local = test_bit(BR_FDB_LOCAL, &fdb->flags);
+	item->locked = false;
+	item->info.dev = (!p || item->is_local) ? br->dev : p->dev;
+	item->info.ctx = ctx;
+}
+
+void
+br_switchdev_fdb_notify(struct net_bridge *br,
+			const struct net_bridge_fdb_entry *fdb, int type)
+{
+	struct switchdev_notifier_fdb_info item;
+
+	if (test_bit(BR_FDB_LOCKED, &fdb->flags))
+		return;
+
+	br_switchdev_fdb_populate(br, &item, fdb, NULL);
+
+	switch (type) {
+	case RTM_DELNEIGH:
+		call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_DEVICE,
+					 item.info.dev, &item.info, NULL);
+		break;
+	case RTM_NEWNEIGH:
+		call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_DEVICE,
+					 item.info.dev, &item.info, NULL);
+		break;
+	}
+}
+
+int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
+			       bool changed, struct netlink_ext_ack *extack)
+{
+	struct switchdev_obj_port_vlan v = {
+		.obj.orig_dev = dev,
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.flags = flags,
+		.vid = vid,
+		.changed = changed,
+	};
+
+	return switchdev_port_obj_add(dev, &v.obj, extack);
+}
+
+int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
+{
+	struct switchdev_obj_port_vlan v = {
+		.obj.orig_dev = dev,
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid = vid,
+	};
+
+	return switchdev_port_obj_del(dev, &v.obj);
+}
+
+static int nbp_switchdev_hwdom_set(struct net_bridge_port *joining)
+{
+	struct net_bridge *br = joining->br;
+	struct net_bridge_port *p;
+	int hwdom;
+
+	/* joining is yet to be added to the port list. */
+	list_for_each_entry(p, &br->port_list, list) {
+		if (netdev_phys_item_id_same(&joining->ppid, &p->ppid)) {
+			joining->hwdom = p->hwdom;
+			return 0;
+		}
+	}
+
+	hwdom = find_next_zero_bit(&br->busy_hwdoms, BR_HWDOM_MAX, 1);
+	if (hwdom >= BR_HWDOM_MAX)
+		return -EBUSY;
+
+	set_bit(hwdom, &br->busy_hwdoms);
+	joining->hwdom = hwdom;
+	return 0;
+}
+
+static void nbp_switchdev_hwdom_put(struct net_bridge_port *leaving)
+{
+	struct net_bridge *br = leaving->br;
+	struct net_bridge_port *p;
+
+	/* leaving is no longer in the port list. */
+	list_for_each_entry(p, &br->port_list, list) {
+		if (p->hwdom == leaving->hwdom)
+			return;
+	}
+
+	clear_bit(leaving->hwdom, &br->busy_hwdoms);
+}
+
+static int nbp_switchdev_add(struct net_bridge_port *p,
+			     struct netdev_phys_item_id ppid,
+			     bool tx_fwd_offload,
+			     struct netlink_ext_ack *extack)
+{
+	int err;
+
+	if (p->offload_count) {
+		/* Prevent unsupported configurations such as a bridge port
+		 * which is a bonding interface, and the member ports are from
+		 * different hardware switches.
+		 */
+		if (!netdev_phys_item_id_same(&p->ppid, &ppid)) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Same bridge port cannot be offloaded by two physical switches");
+			return -EBUSY;
+		}
+
+		/* Tolerate drivers that call switchdev_bridge_port_offload()
+		 * more than once for the same bridge port, such as when the
+		 * bridge port is an offloaded bonding/team interface.
+		 */
+		p->offload_count++;
+
+		return 0;
+	}
+
+	p->ppid = ppid;
+	p->offload_count = 1;
+
+	err = nbp_switchdev_hwdom_set(p);
+	if (err)
+		return err;
+
+	if (tx_fwd_offload) {
+		p->flags |= BR_TX_FWD_OFFLOAD;
+		static_branch_inc(&br_switchdev_tx_fwd_offload);
+	}
+
+	return 0;
+}
+
+static void nbp_switchdev_del(struct net_bridge_port *p)
+{
+	if (WARN_ON(!p->offload_count))
+		return;
+
+	p->offload_count--;
+
+	if (p->offload_count)
+		return;
+
+	if (p->hwdom)
+		nbp_switchdev_hwdom_put(p);
+
+	if (p->flags & BR_TX_FWD_OFFLOAD) {
+		p->flags &= ~BR_TX_FWD_OFFLOAD;
+		static_branch_dec(&br_switchdev_tx_fwd_offload);
+	}
+}
+
+static int
+br_switchdev_fdb_replay_one(struct net_bridge *br, struct notifier_block *nb,
+			    const struct net_bridge_fdb_entry *fdb,
+			    unsigned long action, const void *ctx)
+{
+	struct switchdev_notifier_fdb_info item;
+	int err;
+
+	br_switchdev_fdb_populate(br, &item, fdb, ctx);
+
+	err = nb->notifier_call(nb, action, &item);
+	return notifier_to_errno(err);
+}
+
+static int
+br_switchdev_fdb_replay(const struct net_device *br_dev, const void *ctx,
+			bool adding, struct notifier_block *nb)
+{
+	struct net_bridge_fdb_entry *fdb;
+	struct net_bridge *br;
+	unsigned long action;
+	int err = 0;
+
+	if (!nb)
+		return 0;
+
+	if (!netif_is_bridge_master(br_dev))
+		return -EINVAL;
+
+	br = netdev_priv(br_dev);
+
+	if (adding)
+		action = SWITCHDEV_FDB_ADD_TO_DEVICE;
+	else
+		action = SWITCHDEV_FDB_DEL_TO_DEVICE;
+
+	rcu_read_lock();
+
+	hlist_for_each_entry_rcu(fdb, &br->fdb_list, fdb_node) {
+		err = br_switchdev_fdb_replay_one(br, nb, fdb, action, ctx);
+		if (err)
+			break;
+	}
+
+	rcu_read_unlock();
+
+	return err;
+}
+
+static int br_switchdev_vlan_attr_replay(struct net_device *br_dev,
+					 const void *ctx,
+					 struct notifier_block *nb,
+					 struct netlink_ext_ack *extack)
+{
+	struct switchdev_notifier_port_attr_info attr_info = {
+		.info = {
+			.dev = br_dev,
+			.extack = extack,
+			.ctx = ctx,
+		},
+	};
+	struct net_bridge *br = netdev_priv(br_dev);
+	struct net_bridge_vlan_group *vg;
+	struct switchdev_attr attr;
+	struct net_bridge_vlan *v;
+	int err;
+
+	attr_info.attr = &attr;
+	attr.orig_dev = br_dev;
+
+	vg = br_vlan_group(br);
+	if (!vg)
+		return 0;
+
+	list_for_each_entry(v, &vg->vlan_list, vlist) {
+		if (v->msti) {
+			attr.id = SWITCHDEV_ATTR_ID_VLAN_MSTI;
+			attr.u.vlan_msti.vid = v->vid;
+			attr.u.vlan_msti.msti = v->msti;
+
+			err = nb->notifier_call(nb, SWITCHDEV_PORT_ATTR_SET,
+						&attr_info);
+			err = notifier_to_errno(err);
+			if (err)
+				return err;
+		}
+	}
+
+	return 0;
+}
+
+static int
+br_switchdev_vlan_replay_one(struct notifier_block *nb,
+			     struct net_device *dev,
+			     struct switchdev_obj_port_vlan *vlan,
+			     const void *ctx, unsigned long action,
+			     struct netlink_ext_ack *extack)
+{
+	struct switchdev_notifier_port_obj_info obj_info = {
+		.info = {
+			.dev = dev,
+			.extack = extack,
+			.ctx = ctx,
+		},
+		.obj = &vlan->obj,
+	};
+	int err;
+
+	err = nb->notifier_call(nb, action, &obj_info);
+	return notifier_to_errno(err);
+}
+
+static int br_switchdev_vlan_replay_group(struct notifier_block *nb,
+					  struct net_device *dev,
+					  struct net_bridge_vlan_group *vg,
+					  const void *ctx, unsigned long action,
+					  struct netlink_ext_ack *extack)
+{
+	struct net_bridge_vlan *v;
+	int err = 0;
+	u16 pvid;
+
+	if (!vg)
+		return 0;
+
+	pvid = br_get_pvid(vg);
+
+	list_for_each_entry(v, &vg->vlan_list, vlist) {
+		struct switchdev_obj_port_vlan vlan = {
+			.obj.orig_dev = dev,
+			.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+			.flags = br_vlan_flags(v, pvid),
+			.vid = v->vid,
+		};
+
+		if (!br_vlan_should_use(v))
+			continue;
+
+		err = br_switchdev_vlan_replay_one(nb, dev, &vlan, ctx,
+						   action, extack);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int br_switchdev_vlan_replay(struct net_device *br_dev,
+				    const void *ctx, bool adding,
+				    struct notifier_block *nb,
+				    struct netlink_ext_ack *extack)
+{
+	struct net_bridge *br = netdev_priv(br_dev);
+	struct net_bridge_port *p;
+	unsigned long action;
+	int err;
+
+	ASSERT_RTNL();
+
+	if (!nb)
+		return 0;
+
+	if (!netif_is_bridge_master(br_dev))
+		return -EINVAL;
+
+	if (adding)
+		action = SWITCHDEV_PORT_OBJ_ADD;
+	else
+		action = SWITCHDEV_PORT_OBJ_DEL;
+
+	err = br_switchdev_vlan_replay_group(nb, br_dev, br_vlan_group(br),
+					     ctx, action, extack);
+	if (err)
+		return err;
+
+	list_for_each_entry(p, &br->port_list, list) {
+		struct net_device *dev = p->dev;
+
+		err = br_switchdev_vlan_replay_group(nb, dev,
+						     nbp_vlan_group(p),
+						     ctx, action, extack);
+		if (err)
+			return err;
+	}
+
+	if (adding) {
+		err = br_switchdev_vlan_attr_replay(br_dev, ctx, nb, extack);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+struct br_switchdev_mdb_complete_info {
+	struct net_bridge_port *port;
+	struct br_ip ip;
+};
+
+static void br_switchdev_mdb_complete(struct net_device *dev, int err, void *priv)
+{
+	struct br_switchdev_mdb_complete_info *data = priv;
+	struct net_bridge_port_group __rcu **pp;
+	struct net_bridge_port_group *p;
+	struct net_bridge_mdb_entry *mp;
+	struct net_bridge_port *port = data->port;
+	struct net_bridge *br = port->br;
+
+	if (err)
+		goto err;
+
+	spin_lock_bh(&br->multicast_lock);
+	mp = br_mdb_ip_get(br, &data->ip);
+	if (!mp)
+		goto out;
+	for (pp = &mp->ports; (p = mlock_dereference(*pp, br)) != NULL;
+	     pp = &p->next) {
+		if (p->key.port != port)
+			continue;
+		p->flags |= MDB_PG_FLAGS_OFFLOAD;
+	}
+out:
+	spin_unlock_bh(&br->multicast_lock);
+err:
+	kfree(priv);
+}
+
+static void br_switchdev_mdb_populate(struct switchdev_obj_port_mdb *mdb,
+				      const struct net_bridge_mdb_entry *mp)
+{
+	if (mp->addr.proto == htons(ETH_P_IP))
+		ip_eth_mc_map(mp->addr.dst.ip4, mdb->addr);
+#if IS_ENABLED(CONFIG_IPV6)
+	else if (mp->addr.proto == htons(ETH_P_IPV6))
+		ipv6_eth_mc_map(&mp->addr.dst.ip6, mdb->addr);
+#endif
+	else
+		ether_addr_copy(mdb->addr, mp->addr.dst.mac_addr);
+
+	mdb->vid = mp->addr.vid;
+}
+
+static void br_switchdev_host_mdb_one(struct net_device *dev,
+				      struct net_device *lower_dev,
+				      struct net_bridge_mdb_entry *mp,
+				      int type)
+{
+	struct switchdev_obj_port_mdb mdb = {
+		.obj = {
+			.id = SWITCHDEV_OBJ_ID_HOST_MDB,
+			.flags = SWITCHDEV_F_DEFER,
+			.orig_dev = dev,
+		},
+	};
+
+	br_switchdev_mdb_populate(&mdb, mp);
+
+	switch (type) {
+	case RTM_NEWMDB:
+		switchdev_port_obj_add(lower_dev, &mdb.obj, NULL);
+		break;
+	case RTM_DELMDB:
+		switchdev_port_obj_del(lower_dev, &mdb.obj);
+		break;
+	}
+}
+
+static void br_switchdev_host_mdb(struct net_device *dev,
+				  struct net_bridge_mdb_entry *mp, int type)
+{
+	struct net_device *lower_dev;
+	struct list_head *iter;
+
+	netdev_for_each_lower_dev(dev, lower_dev, iter)
+		br_switchdev_host_mdb_one(dev, lower_dev, mp, type);
+}
+
+static int
+br_switchdev_mdb_replay_one(struct notifier_block *nb, struct net_device *dev,
+			    const struct switchdev_obj_port_mdb *mdb,
+			    unsigned long action, const void *ctx,
+			    struct netlink_ext_ack *extack)
+{
+	struct switchdev_notifier_port_obj_info obj_info = {
+		.info = {
+			.dev = dev,
+			.extack = extack,
+			.ctx = ctx,
+		},
+		.obj = &mdb->obj,
+	};
+	int err;
+
+	err = nb->notifier_call(nb, action, &obj_info);
+	return notifier_to_errno(err);
+}
+
+static int br_switchdev_mdb_queue_one(struct list_head *mdb_list,
+				      enum switchdev_obj_id id,
+				      const struct net_bridge_mdb_entry *mp,
+				      struct net_device *orig_dev)
+{
+	struct switchdev_obj_port_mdb *mdb;
+
+	mdb = kzalloc(sizeof(*mdb), GFP_ATOMIC);
+	if (!mdb)
+		return -ENOMEM;
+
+	mdb->obj.id = id;
+	mdb->obj.orig_dev = orig_dev;
+	br_switchdev_mdb_populate(mdb, mp);
+	list_add_tail(&mdb->obj.list, mdb_list);
+
+	return 0;
+}
+
+void br_switchdev_mdb_notify(struct net_device *dev,
+			     struct net_bridge_mdb_entry *mp,
+			     struct net_bridge_port_group *pg,
+			     int type)
+{
+	struct br_switchdev_mdb_complete_info *complete_info;
+	struct switchdev_obj_port_mdb mdb = {
+		.obj = {
+			.id = SWITCHDEV_OBJ_ID_PORT_MDB,
+			.flags = SWITCHDEV_F_DEFER,
+		},
+	};
+
+	if (!pg)
+		return br_switchdev_host_mdb(dev, mp, type);
+
+	br_switchdev_mdb_populate(&mdb, mp);
+
+	mdb.obj.orig_dev = pg->key.port->dev;
+	switch (type) {
+	case RTM_NEWMDB:
+		complete_info = kmalloc(sizeof(*complete_info), GFP_ATOMIC);
+		if (!complete_info)
+			break;
+		complete_info->port = pg->key.port;
+		complete_info->ip = mp->addr;
+		mdb.obj.complete_priv = complete_info;
+		mdb.obj.complete = br_switchdev_mdb_complete;
+		if (switchdev_port_obj_add(pg->key.port->dev, &mdb.obj, NULL))
+			kfree(complete_info);
+		break;
+	case RTM_DELMDB:
+		switchdev_port_obj_del(pg->key.port->dev, &mdb.obj);
+		break;
+	}
+}
+#endif
+
+static int
+br_switchdev_mdb_replay(struct net_device *br_dev, struct net_device *dev,
+			const void *ctx, bool adding, struct notifier_block *nb,
+			struct netlink_ext_ack *extack)
+{
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+	const struct net_bridge_mdb_entry *mp;
+	struct switchdev_obj *obj, *tmp;
+	struct net_bridge *br;
+	unsigned long action;
+	LIST_HEAD(mdb_list);
+	int err = 0;
+
+	ASSERT_RTNL();
+
+	if (!nb)
+		return 0;
+
+	if (!netif_is_bridge_master(br_dev) || !netif_is_bridge_port(dev))
+		return -EINVAL;
+
+	br = netdev_priv(br_dev);
+
+	if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
+		return 0;
+
+	/* We cannot walk over br->mdb_list protected just by the rtnl_mutex,
+	 * because the write-side protection is br->multicast_lock. But we
+	 * need to emulate the [ blocking ] calling context of a regular
+	 * switchdev event, so since both br->multicast_lock and RCU read side
+	 * critical sections are atomic, we have no choice but to pick the RCU
+	 * read side lock, queue up all our events, leave the critical section
+	 * and notify switchdev from blocking context.
+	 */
+	rcu_read_lock();
+
+	hlist_for_each_entry_rcu(mp, &br->mdb_list, mdb_node) {
+		struct net_bridge_port_group __rcu * const *pp;
+		const struct net_bridge_port_group *p;
+
+		if (mp->host_joined) {
+			err = br_switchdev_mdb_queue_one(&mdb_list,
+							 SWITCHDEV_OBJ_ID_HOST_MDB,
+							 mp, br_dev);
+			if (err) {
+				rcu_read_unlock();
+				goto out_free_mdb;
+			}
+		}
+
+		for (pp = &mp->ports; (p = rcu_dereference(*pp)) != NULL;
+		     pp = &p->next) {
+			if (p->key.port->dev != dev)
+				continue;
+
+			err = br_switchdev_mdb_queue_one(&mdb_list,
+							 SWITCHDEV_OBJ_ID_PORT_MDB,
+							 mp, dev);
+			if (err) {
+				rcu_read_unlock();
+				goto out_free_mdb;
+			}
+		}
+	}
+
+	rcu_read_unlock();
+
+	if (adding)
+		action = SWITCHDEV_PORT_OBJ_ADD;
+	else
+		action = SWITCHDEV_PORT_OBJ_DEL;
+
+	list_for_each_entry(obj, &mdb_list, list) {
+		err = br_switchdev_mdb_replay_one(nb, dev,
+						  SWITCHDEV_OBJ_PORT_MDB(obj),
+						  action, ctx, extack);
+		if (err)
+			goto out_free_mdb;
+	}
+
+out_free_mdb:
+	list_for_each_entry_safe(obj, tmp, &mdb_list, list) {
+		list_del(&obj->list);
+		kfree(SWITCHDEV_OBJ_PORT_MDB(obj));
+	}
+
+	if (err)
+		return err;
+#endif
+
+	return 0;
+}
+
+static int nbp_switchdev_sync_objs(struct net_bridge_port *p, const void *ctx,
+				   struct notifier_block *atomic_nb,
+				   struct notifier_block *blocking_nb,
+				   struct netlink_ext_ack *extack)
+{
+	struct net_device *br_dev = p->br->dev;
+	struct net_device *dev = p->dev;
+	int err;
+
+	err = br_switchdev_vlan_replay(br_dev, ctx, true, blocking_nb, extack);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	err = br_switchdev_mdb_replay(br_dev, dev, ctx, true, blocking_nb,
+				      extack);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	err = br_switchdev_fdb_replay(br_dev, ctx, true, atomic_nb);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return 0;
+}
+
+static void nbp_switchdev_unsync_objs(struct net_bridge_port *p,
+				      const void *ctx,
+				      struct notifier_block *atomic_nb,
+				      struct notifier_block *blocking_nb)
+{
+	struct net_device *br_dev = p->br->dev;
+	struct net_device *dev = p->dev;
+
+	br_switchdev_fdb_replay(br_dev, ctx, false, atomic_nb);
+
+	br_switchdev_mdb_replay(br_dev, dev, ctx, false, blocking_nb, NULL);
+
+	br_switchdev_vlan_replay(br_dev, ctx, false, blocking_nb, NULL);
+}
+
+/* Let the bridge know that this port is offloaded, so that it can assign a
+ * switchdev hardware domain to it.
+ */
+int br_switchdev_port_offload(struct net_bridge_port *p,
+			      struct net_device *dev, const void *ctx,
+			      struct notifier_block *atomic_nb,
+			      struct notifier_block *blocking_nb,
+			      bool tx_fwd_offload,
+			      struct netlink_ext_ack *extack)
+{
+	struct netdev_phys_item_id ppid;
+	int err;
+
+	err = dev_get_port_parent_id(dev, &ppid, false);
+	if (err)
+		return err;
+
+	err = nbp_switchdev_add(p, ppid, tx_fwd_offload, extack);
+	if (err)
+		return err;
+
+	err = nbp_switchdev_sync_objs(p, ctx, atomic_nb, blocking_nb, extack);
+	if (err)
+		goto out_switchdev_del;
+
+	return 0;
+
+out_switchdev_del:
+	nbp_switchdev_del(p);
+
+	return err;
+}
+
+void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
+				 struct notifier_block *atomic_nb,
+				 struct notifier_block *blocking_nb)
+{
+	nbp_switchdev_unsync_objs(p, ctx, atomic_nb, blocking_nb);
+
+	nbp_switchdev_del(p);
+}