Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Enable memcg accounting for various networking objects.

  BPF:

   - Introduce bpf timers.

   - Add perf link and opaque bpf_cookie which the program can read out
     again, to be used in libbpf-based USDT library.

   - Add bpf_task_pt_regs() helper to access user space pt_regs in
     kprobes, to help user space stack unwinding.

   - Add support for UNIX sockets for BPF sockmap.

   - Extend BPF iterator support for UNIX domain sockets.

   - Allow BPF TCP congestion control progs and bpf iterators to call
     bpf_setsockopt(), e.g. to switch to another congestion control
     algorithm.

  Protocols:

   - Support IOAM Pre-allocated Trace with IPv6.

   - Support Management Component Transport Protocol.

   - bridge: multicast: add vlan support.

   - netfilter: add hooks for the SRv6 lightweight tunnel driver.

   - tcp:
       - enable mid-stream window clamping (by user space or BPF)
       - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
       - more accurate DSACK processing for RACK-TLP

   - mptcp:
       - add full mesh path manager option
       - add partial support for MP_FAIL
       - improve use of backup subflows
       - optimize option processing

   - af_unix: add OOB notification support.

   - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the
     router.

   - mac80211: Target Wake Time support in AP mode.

   - can: j1939: extend UAPI to notify about RX status.

  Driver APIs:

   - Add page frag support in page pool API.

   - Many improvements to the DSA (distributed switch) APIs.

   - ethtool: extend IRQ coalesce uAPI with timer reset modes.

   - devlink: control which auxiliary devices are created.

   - Support CAN PHYs via the generic PHY subsystem.

   - Proper cross-chip support for tag_8021q.

   - Allow TX forwarding for the software bridge data path to be
     offloaded to capable devices.

  Drivers:

   - veth: more flexible channels number configuration.

   - openvswitch: introduce per-cpu upcall dispatch.

   - Add internet mix (IMIX) mode to pktgen.

   - Transparently handle XDP operations in the bonding driver.

   - Add LiteETH network driver.

   - Renesas (ravb):
       - support Gigabit Ethernet IP

   - NXP Ethernet switch (sja1105):
       - fast aging support
       - support for "H" switch topologies
       - traffic termination for ports under VLAN-aware bridge

   - Intel 1G Ethernet
       - support getcrosststamp() with PCIe PTM (Precision Time
         Measurement) for better time sync
       - support Credit-Based Shaper (CBS) offload, enabling HW traffic
         prioritization and bandwidth reservation

   - Broadcom Ethernet (bnxt)
       - support pulse-per-second output
       - support larger Rx rings

   - Mellanox Ethernet (mlx5)
       - support ethtool RSS contexts and MQPRIO channel mode
       - support LAG offload with bridging
       - support devlink rate limit API
       - support packet sampling on tunnels

   - Huawei Ethernet (hns3):
       - basic devlink support
       - add extended IRQ coalescing support
       - report extended link state

   - Netronome Ethernet (nfp):
       - add conntrack offload support

   - Broadcom WiFi (brcmfmac):
       - add WPA3 Personal with FT to supported cipher suites
       - support 43752 SDIO device

   - Intel WiFi (iwlwifi):
       - support scanning hidden 6GHz networks
       - support for a new hardware family (Bz)

   - Xen pv driver:
       - harden netfront against malicious backends

   - Qualcomm mobile
       - ipa: refactor power management and enable automatic suspend
       - mhi: move MBIM to WWAN subsystem interfaces

  Refactor:

   - Ambient BPF run context and cgroup storage cleanup.

   - Compat rework for ndo_ioctl.

  Old code removal:

   - prism54 remove the obsoleted driver, deprecated by the p54 driver.

   - wan: remove sbni/granch driver"

* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits)
  net: Add depends on OF_NET for LiteX's LiteETH
  ipv6: seg6: remove duplicated include
  net: hns3: remove unnecessary spaces
  net: hns3: add some required spaces
  net: hns3: clean up a type mismatch warning
  net: hns3: refine function hns3_set_default_feature()
  ipv6: remove duplicated 'net/lwtunnel.h' include
  net: w5100: check return value after calling platform_get_resource()
  net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
  net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()
  net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()
  fou: remove sparse errors
  ipv4: fix endianness issue in inet_rtm_getroute_build_skb()
  octeontx2-af: Set proper errorcode for IPv4 checksum errors
  octeontx2-af: Fix static code analyzer reported issues
  octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg
  octeontx2-af: Fix loop in free and unmap counter
  af_unix: fix potential NULL deref in unix_dgram_connect()
  dpaa2-eth: Replace strlcpy with strscpy
  octeontx2-af: Use NDC TX for transmit packet data
  ...

1 files changed, 667 insertions, 1217 deletions

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 49eb0ac41b7d..2f8cc6686c38 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -26,9 +26,6 @@
 #include "sja1105_tas.h"
 
 #define SJA1105_UNKNOWN_MULTICAST	0x010000000000ull
-#define SJA1105_DEFAULT_VLAN		(VLAN_N_VID - 1)
-
-static const struct dsa_switch_ops sja1105_switch_ops;
 
 static void sja1105_hw_reset(struct gpio_desc *gpio, unsigned int pulse_len,
 			     unsigned int startup_delay)
@@ -57,6 +54,93 @@ static bool sja1105_can_forward(struct sja1105_l2_forwarding_entry *l2_fwd,
 	return !!(l2_fwd[from].reach_port & BIT(to));
 }
 
+static int sja1105_is_vlan_configured(struct sja1105_private *priv, u16 vid)
+{
+	struct sja1105_vlan_lookup_entry *vlan;
+	int count, i;
+
+	vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries;
+	count = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entry_count;
+
+	for (i = 0; i < count; i++)
+		if (vlan[i].vlanid == vid)
+			return i;
+
+	/* Return an invalid entry index if not found */
+	return -1;
+}
+
+static int sja1105_drop_untagged(struct dsa_switch *ds, int port, bool drop)
+{
+	struct sja1105_private *priv = ds->priv;
+	struct sja1105_mac_config_entry *mac;
+
+	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
+
+	if (mac[port].drpuntag == drop)
+		return 0;
+
+	mac[port].drpuntag = drop;
+
+	return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
+					    &mac[port], true);
+}
+
+static int sja1105_pvid_apply(struct sja1105_private *priv, int port, u16 pvid)
+{
+	struct sja1105_mac_config_entry *mac;
+
+	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
+
+	if (mac[port].vlanid == pvid)
+		return 0;
+
+	mac[port].vlanid = pvid;
+
+	return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
+					    &mac[port], true);
+}
+
+static int sja1105_commit_pvid(struct dsa_switch *ds, int port)
+{
+	struct dsa_port *dp = dsa_to_port(ds, port);
+	struct sja1105_private *priv = ds->priv;
+	struct sja1105_vlan_lookup_entry *vlan;
+	bool drop_untagged = false;
+	int match, rc;
+	u16 pvid;
+
+	if (dp->bridge_dev && br_vlan_enabled(dp->bridge_dev))
+		pvid = priv->bridge_pvid[port];
+	else
+		pvid = priv->tag_8021q_pvid[port];
+
+	rc = sja1105_pvid_apply(priv, port, pvid);
+	if (rc)
+		return rc;
+
+	/* Only force dropping of untagged packets when the port is under a
+	 * VLAN-aware bridge. When the tag_8021q pvid is used, we are
+	 * deliberately removing the RX VLAN from the port's VMEMB_PORT list,
+	 * to prevent DSA tag spoofing from the link partner. Untagged packets
+	 * are the only ones that should be received with tag_8021q, so
+	 * definitely don't drop them.
+	 */
+	if (pvid == priv->bridge_pvid[port]) {
+		vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries;
+
+		match = sja1105_is_vlan_configured(priv, pvid);
+
+		if (match < 0 || !(vlan[match].vmemb_port & BIT(port)))
+			drop_untagged = true;
+	}
+
+	if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
+		drop_untagged = true;
+
+	return sja1105_drop_untagged(ds, port, drop_untagged);
+}
+
 static int sja1105_init_mac_settings(struct sja1105_private *priv)
 {
 	struct sja1105_mac_config_entry default_mac = {
@@ -101,7 +185,7 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv)
 	struct sja1105_mac_config_entry *mac;
 	struct dsa_switch *ds = priv->ds;
 	struct sja1105_table *table;
-	int i;
+	struct dsa_port *dp;
 
 	table = &priv->static_config.tables[BLK_IDX_MAC_CONFIG];
 
@@ -120,14 +204,27 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv)
 
 	mac = table->entries;
 
-	for (i = 0; i < ds->num_ports; i++) {
-		mac[i] = default_mac;
+	list_for_each_entry(dp, &ds->dst->ports, list) {
+		if (dp->ds != ds)
+			continue;
+
+		mac[dp->index] = default_mac;
 
 		/* Let sja1105_bridge_stp_state_set() keep address learning
-		 * enabled for the CPU port.
+		 * enabled for the DSA ports. CPU ports use software-assisted
+		 * learning to ensure that only FDB entries belonging to the
+		 * bridge are learned, and that they are learned towards all
+		 * CPU ports in a cross-chip topology if multiple CPU ports
+		 * exist.
+		 */
+		if (dsa_port_is_dsa(dp))
+			dp->learning = true;
+
+		/* Disallow untagged packets from being received on the
+		 * CPU and DSA ports.
 		 */
-		if (dsa_is_cpu_port(ds, i))
-			priv->learn_ena |= BIT(i);
+		if (dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp))
+			mac[dp->index].drpuntag = true;
 	}
 
 	return 0;
@@ -378,8 +475,6 @@ static int sja1105_init_static_vlan(struct sja1105_private *priv)
 	table->entry_count = 1;
 
 	for (port = 0; port < ds->num_ports; port++) {
-		struct sja1105_bridge_vlan *v;
-
 		if (dsa_is_unused_port(ds, port))
 			continue;
 
@@ -387,22 +482,10 @@ static int sja1105_init_static_vlan(struct sja1105_private *priv)
 		pvid.vlan_bc |= BIT(port);
 		pvid.tag_port &= ~BIT(port);
 
-		v = kzalloc(sizeof(*v), GFP_KERNEL);
-		if (!v)
-			return -ENOMEM;
-
-		v->port = port;
-		v->vid = SJA1105_DEFAULT_VLAN;
-		v->untagged = true;
-		if (dsa_is_cpu_port(ds, port))
-			v->pvid = true;
-		list_add(&v->list, &priv->dsa_8021q_vlans);
-
-		v = kmemdup(v, sizeof(*v), GFP_KERNEL);
-		if (!v)
-			return -ENOMEM;
-
-		list_add(&v->list, &priv->bridge_vlans);
+		if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)) {
+			priv->tag_8021q_pvid[port] = SJA1105_DEFAULT_VLAN;
+			priv->bridge_pvid[port] = SJA1105_DEFAULT_VLAN;
+		}
 	}
 
 	((struct sja1105_vlan_lookup_entry *)table->entries)[0] = pvid;
@@ -413,8 +496,11 @@ static int sja1105_init_l2_forwarding(struct sja1105_private *priv)
 {
 	struct sja1105_l2_forwarding_entry *l2fwd;
 	struct dsa_switch *ds = priv->ds;
+	struct dsa_switch_tree *dst;
 	struct sja1105_table *table;
-	int i, j;
+	struct dsa_link *dl;
+	int port, tc;
+	int from, to;
 
 	table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING];
 
@@ -432,47 +518,109 @@ static int sja1105_init_l2_forwarding(struct sja1105_private *priv)
 
 	l2fwd = table->entries;
 
-	/* First 5 entries define the forwarding rules */
-	for (i = 0; i < ds->num_ports; i++) {
-		unsigned int upstream = dsa_upstream_port(priv->ds, i);
+	/* First 5 entries in the L2 Forwarding Table define the forwarding
+	 * rules and the VLAN PCP to ingress queue mapping.
+	 * Set up the ingress queue mapping first.
+	 */
+	for (port = 0; port < ds->num_ports; port++) {
+		if (dsa_is_unused_port(ds, port))
+			continue;
+
+		for (tc = 0; tc < SJA1105_NUM_TC; tc++)
+			l2fwd[port].vlan_pmap[tc] = tc;
+	}
 
-		if (dsa_is_unused_port(ds, i))
+	/* Then manage the forwarding domain for user ports. These can forward
+	 * only to the always-on domain (CPU port and DSA links)
+	 */
+	for (from = 0; from < ds->num_ports; from++) {
+		if (!dsa_is_user_port(ds, from))
 			continue;
 
-		for (j = 0; j < SJA1105_NUM_TC; j++)
-			l2fwd[i].vlan_pmap[j] = j;
+		for (to = 0; to < ds->num_ports; to++) {
+			if (!dsa_is_cpu_port(ds, to) &&
+			    !dsa_is_dsa_port(ds, to))
+				continue;
 
-		/* All ports start up with egress flooding enabled,
-		 * including the CPU port.
-		 */
-		priv->ucast_egress_floods |= BIT(i);
-		priv->bcast_egress_floods |= BIT(i);
+			l2fwd[from].bc_domain |= BIT(to);
+			l2fwd[from].fl_domain |= BIT(to);
 
-		if (i == upstream)
+			sja1105_port_allow_traffic(l2fwd, from, to, true);
+		}
+	}
+
+	/* Then manage the forwarding domain for DSA links and CPU ports (the
+	 * always-on domain). These can send packets to any enabled port except
+	 * themselves.
+	 */
+	for (from = 0; from < ds->num_ports; from++) {
+		if (!dsa_is_cpu_port(ds, from) && !dsa_is_dsa_port(ds, from))
 			continue;
 
-		sja1105_port_allow_traffic(l2fwd, i, upstream, true);
-		sja1105_port_allow_traffic(l2fwd, upstream, i, true);
+		for (to = 0; to < ds->num_ports; to++) {
+			if (dsa_is_unused_port(ds, to))
+				continue;
 
-		l2fwd[i].bc_domain = BIT(upstream);
-		l2fwd[i].fl_domain = BIT(upstream);
+			if (from == to)
+				continue;
 
-		l2fwd[upstream].bc_domain |= BIT(i);
-		l2fwd[upstream].fl_domain |= BIT(i);
+			l2fwd[from].bc_domain |= BIT(to);
+			l2fwd[from].fl_domain |= BIT(to);
+
+			sja1105_port_allow_traffic(l2fwd, from, to, true);
+		}
+	}
+
+	/* In odd topologies ("H" connections where there is a DSA link to
+	 * another switch which also has its own CPU port), TX packets can loop
+	 * back into the system (they are flooded from CPU port 1 to the DSA
+	 * link, and from there to CPU port 2). Prevent this from happening by
+	 * cutting RX from DSA links towards our CPU port, if the remote switch
+	 * has its own CPU port and therefore doesn't need ours for network
+	 * stack termination.
+	 */
+	dst = ds->dst;
+
+	list_for_each_entry(dl, &dst->rtable, list) {
+		if (dl->dp->ds != ds || dl->link_dp->cpu_dp == dl->dp->cpu_dp)
+			continue;
+
+		from = dl->dp->index;
+		to = dsa_upstream_port(ds, from);
+
+		dev_warn(ds->dev,
+			 "H topology detected, cutting RX from DSA link %d to CPU port %d to prevent TX packet loops\n",
+			 from, to);
+
+		sja1105_port_allow_traffic(l2fwd, from, to, false);
+
+		l2fwd[from].bc_domain &= ~BIT(to);
+		l2fwd[from].fl_domain &= ~BIT(to);
+	}
+
+	/* Finally, manage the egress flooding domain. All ports start up with
+	 * flooding enabled, including the CPU port and DSA links.
+	 */
+	for (port = 0; port < ds->num_ports; port++) {
+		if (dsa_is_unused_port(ds, port))
+			continue;
+
+		priv->ucast_egress_floods |= BIT(port);
+		priv->bcast_egress_floods |= BIT(port);
 	}
 
 	/* Next 8 entries define VLAN PCP mapping from ingress to egress.
 	 * Create a one-to-one mapping.
 	 */
-	for (i = 0; i < SJA1105_NUM_TC; i++) {
-		for (j = 0; j < ds->num_ports; j++) {
-			if (dsa_is_unused_port(ds, j))
+	for (tc = 0; tc < SJA1105_NUM_TC; tc++) {
+		for (port = 0; port < ds->num_ports; port++) {
+			if (dsa_is_unused_port(ds, port))
 				continue;
 
-			l2fwd[ds->num_ports + i].vlan_pmap[j] = i;
+			l2fwd[ds->num_ports + tc].vlan_pmap[port] = tc;
 		}
 
-		l2fwd[ds->num_ports + i].type_egrpcp2outputq = true;
+		l2fwd[ds->num_ports + tc].type_egrpcp2outputq = true;
 	}
 
 	return 0;
@@ -551,18 +699,11 @@ void sja1105_frame_memory_partitioning(struct sja1105_private *priv)
 {
 	struct sja1105_l2_forwarding_params_entry *l2_fwd_params;
 	struct sja1105_vl_forwarding_params_entry *vl_fwd_params;
-	int max_mem = priv->info->max_frame_mem;
 	struct sja1105_table *table;
 
-	/* VLAN retagging is implemented using a loopback port that consumes
-	 * frame buffers. That leaves less for us.
-	 */
-	if (priv->vlan_state == SJA1105_VLAN_BEST_EFFORT)
-		max_mem -= SJA1105_FRAME_MEMORY_RETAGGING_OVERHEAD;
-
 	table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING_PARAMS];
 	l2_fwd_params = table->entries;
-	l2_fwd_params->part_spc[0] = max_mem;
+	l2_fwd_params->part_spc[0] = SJA1105_MAX_FRAME_MEMORY;
 
 	/* If we have any critical-traffic virtual links, we need to reserve
 	 * some frame buffer memory for them. At the moment, hardcode the value
@@ -634,6 +775,72 @@ static void sja1110_select_tdmaconfigidx(struct sja1105_private *priv)
 	general_params->tdmaconfigidx = tdmaconfigidx;
 }
 
+static int sja1105_init_topology(struct sja1105_private *priv,
+				 struct sja1105_general_params_entry *general_params)
+{
+	struct dsa_switch *ds = priv->ds;
+	int port;
+
+	/* The host port is the destination for traffic matching mac_fltres1
+	 * and mac_fltres0 on all ports except itself. Default to an invalid
+	 * value.
+	 */
+	general_params->host_port = ds->num_ports;
+
+	/* Link-local traffic received on casc_port will be forwarded
+	 * to host_port without embedding the source port and device ID
+	 * info in the destination MAC address, and no RX timestamps will be
+	 * taken either (presumably because it is a cascaded port and a
+	 * downstream SJA switch already did that).
+	 * To disable the feature, we need to do different things depending on
+	 * switch generation. On SJA1105 we need to set an invalid port, while
+	 * on SJA1110 which support multiple cascaded ports, this field is a
+	 * bitmask so it must be left zero.
+	 */
+	if (!priv->info->multiple_cascade_ports)
+		general_params->casc_port = ds->num_ports;
+
+	for (port = 0; port < ds->num_ports; port++) {
+		bool is_upstream = dsa_is_upstream_port(ds, port);
+		bool is_dsa_link = dsa_is_dsa_port(ds, port);
+
+		/* Upstream ports can be dedicated CPU ports or
+		 * upstream-facing DSA links
+		 */
+		if (is_upstream) {
+			if (general_params->host_port == ds->num_ports) {
+				general_params->host_port = port;
+			} else {
+				dev_err(ds->dev,
+					"Port %llu is already a host port, configuring %d as one too is not supported\n",
+					general_params->host_port, port);
+				return -EINVAL;
+			}
+		}
+
+		/* Cascade ports are downstream-facing DSA links */
+		if (is_dsa_link && !is_upstream) {
+			if (priv->info->multiple_cascade_ports) {
+				general_params->casc_port |= BIT(port);
+			} else if (general_params->casc_port == ds->num_ports) {
+				general_params->casc_port = port;
+			} else {
+				dev_err(ds->dev,
+					"Port %llu is already a cascade port, configuring %d as one too is not supported\n",
+					general_params->casc_port, port);
+				return -EINVAL;
+			}
+		}
+	}
+
+	if (general_params->host_port == ds->num_ports) {
+		dev_err(ds->dev, "No host port configured\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int sja1105_init_general_params(struct sja1105_private *priv)
 {
 	struct sja1105_general_params_entry default_general_params = {
@@ -652,12 +859,6 @@ static int sja1105_init_general_params(struct sja1105_private *priv)
 		.mac_flt0    = SJA1105_LINKLOCAL_FILTER_B_MASK,
 		.incl_srcpt0 = false,
 		.send_meta0  = false,
-		/* The destination for traffic matching mac_fltres1 and
-		 * mac_fltres0 on all ports except host_port. Such traffic
-		 * receieved on host_port itself would be dropped, except
-		 * by installing a temporary 'management route'
-		 */
-		.host_port = priv->ds->num_ports,
 		/* Default to an invalid value */
 		.mirr_port = priv->ds->num_ports,
 		/* No TTEthernet */
@@ -677,16 +878,12 @@ static int sja1105_init_general_params(struct sja1105_private *priv)
 		.header_type = ETH_P_SJA1110,
 	};
 	struct sja1105_general_params_entry *general_params;
-	struct dsa_switch *ds = priv->ds;
 	struct sja1105_table *table;
-	int port;
+	int rc;
 
-	for (port = 0; port < ds->num_ports; port++) {
-		if (dsa_is_cpu_port(ds, port)) {
-			default_general_params.host_port = port;
-			break;
-		}
-	}
+	rc = sja1105_init_topology(priv, &default_general_params);
+	if (rc)
+		return rc;
 
 	table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
 
@@ -709,19 +906,6 @@ static int sja1105_init_general_params(struct sja1105_private *priv)
 
 	sja1110_select_tdmaconfigidx(priv);
 
-	/* Link-local traffic received on casc_port will be forwarded
-	 * to host_port without embedding the source port and device ID
-	 * info in the destination MAC address, and no RX timestamps will be
-	 * taken either (presumably because it is a cascaded port and a
-	 * downstream SJA switch already did that).
-	 * To disable the feature, we need to do different things depending on
-	 * switch generation. On SJA1105 we need to set an invalid port, while
-	 * on SJA1110 which support multiple cascaded ports, this field is a
-	 * bitmask so it must be left zero.
-	 */
-	if (!priv->info->multiple_cascade_ports)
-		general_params->casc_port = ds->num_ports;
-
 	return 0;
 }
 
@@ -849,7 +1033,7 @@ static int sja1105_init_l2_policing(struct sja1105_private *priv)
 	for (port = 0; port < ds->num_ports; port++) {
 		int mtu = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
 
-		if (dsa_is_cpu_port(priv->ds, port))
+		if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
 			mtu += VLAN_HLEN;
 
 		policing[port].smax = 65535; /* Burst size in bytes */
@@ -1568,18 +1752,6 @@ static int sja1105_fdb_add(struct dsa_switch *ds, int port,
 {
 	struct sja1105_private *priv = ds->priv;
 
-	/* dsa_8021q is in effect when the bridge's vlan_filtering isn't,
-	 * so the switch still does some VLAN processing internally.
-	 * But Shared VLAN Learning (SVL) is also active, and it will take
-	 * care of autonomous forwarding between the unique pvid's of each
-	 * port.  Here we just make sure that users can't add duplicate FDB
-	 * entries when in this mode - the actual VID doesn't matter except
-	 * for what gets printed in 'bridge fdb show'.  In the case of zero,
-	 * no VID gets printed at all.
-	 */
-	if (priv->vlan_state != SJA1105_VLAN_FILTERING_FULL)
-		vid = 0;
-
 	return priv->info->fdb_add_cmd(ds, port, addr, vid);
 }
 
@@ -1588,9 +1760,6 @@ static int sja1105_fdb_del(struct dsa_switch *ds, int port,
 {
 	struct sja1105_private *priv = ds->priv;
 
-	if (priv->vlan_state != SJA1105_VLAN_FILTERING_FULL)
-		vid = 0;
-
 	return priv->info->fdb_del_cmd(ds, port, addr, vid);
 }
 
@@ -1633,7 +1802,7 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port,
 		u64_to_ether_addr(l2_lookup.macaddr, macaddr);
 
 		/* We need to hide the dsa_8021q VLANs from the user. */
-		if (priv->vlan_state == SJA1105_VLAN_UNAWARE)
+		if (!priv->vlan_aware)
 			l2_lookup.vlanid = 0;
 		rc = cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data);
 		if (rc)
@@ -1642,6 +1811,46 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port,
 	return 0;
 }
 
+static void sja1105_fast_age(struct dsa_switch *ds, int port)
+{
+	struct sja1105_private *priv = ds->priv;
+	int i;
+
+	for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) {
+		struct sja1105_l2_lookup_entry l2_lookup = {0};
+		u8 macaddr[ETH_ALEN];
+		int rc;
+
+		rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
+						 i, &l2_lookup);
+		/* No fdb entry at i, not an issue */
+		if (rc == -ENOENT)
+			continue;
+		if (rc) {
+			dev_err(ds->dev, "Failed to read FDB: %pe\n",
+				ERR_PTR(rc));
+			return;
+		}
+
+		if (!(l2_lookup.destports & BIT(port)))
+			continue;
+
+		/* Don't delete static FDB entries */
+		if (l2_lookup.lockeds)
+			continue;
+
+		u64_to_ether_addr(l2_lookup.macaddr, macaddr);
+
+		rc = sja1105_fdb_del(ds, port, macaddr, l2_lookup.vlanid);
+		if (rc) {
+			dev_err(ds->dev,
+				"Failed to delete FDB entry %pM vid %lld: %pe\n",
+				macaddr, l2_lookup.vlanid, ERR_PTR(rc));
+			return;
+		}
+	}
+}
+
 static int sja1105_mdb_add(struct dsa_switch *ds, int port,
 			   const struct switchdev_obj_port_mdb *mdb)
 {
@@ -1740,12 +1949,17 @@ static int sja1105_bridge_member(struct dsa_switch *ds, int port,
 	if (rc)
 		return rc;
 
+	rc = sja1105_commit_pvid(ds, port);
+	if (rc)
+		return rc;
+
 	return sja1105_manage_flood_domains(priv);
 }
 
 static void sja1105_bridge_stp_state_set(struct dsa_switch *ds, int port,
 					 u8 state)
 {
+	struct dsa_port *dp = dsa_to_port(ds, port);
 	struct sja1105_private *priv = ds->priv;
 	struct sja1105_mac_config_entry *mac;
 
@@ -1771,12 +1985,12 @@ static void sja1105_bridge_stp_state_set(struct dsa_switch *ds, int port,
 	case BR_STATE_LEARNING:
 		mac[port].ingress   = true;
 		mac[port].egress    = false;
-		mac[port].dyn_learn = !!(priv->learn_ena & BIT(port));
+		mac[port].dyn_learn = dp->learning;
 		break;
 	case BR_STATE_FORWARDING:
 		mac[port].ingress   = true;
 		mac[port].egress    = true;
-		mac[port].dyn_learn = !!(priv->learn_ena & BIT(port));
+		mac[port].dyn_learn = dp->learning;
 		break;
 	default:
 		dev_err(ds->dev, "invalid STP state: %d\n", state);
@@ -2039,97 +2253,6 @@ out:
 	return rc;
 }
 
-static int sja1105_pvid_apply(struct sja1105_private *priv, int port, u16 pvid)
-{
-	struct sja1105_mac_config_entry *mac;
-
-	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
-
-	mac[port].vlanid = pvid;
-
-	return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
-					   &mac[port], true);
-}
-
-static int sja1105_crosschip_bridge_join(struct dsa_switch *ds,
-					 int tree_index, int sw_index,
-					 int other_port, struct net_device *br)
-{
-	struct dsa_switch *other_ds = dsa_switch_find(tree_index, sw_index);
-	struct sja1105_private *other_priv = other_ds->priv;
-	struct sja1105_private *priv = ds->priv;
-	int port, rc;
-
-	if (other_ds->ops != &sja1105_switch_ops)
-		return 0;
-
-	for (port = 0; port < ds->num_ports; port++) {
-		if (!dsa_is_user_port(ds, port))
-			continue;
-		if (dsa_to_port(ds, port)->bridge_dev != br)
-			continue;
-
-		rc = dsa_8021q_crosschip_bridge_join(priv->dsa_8021q_ctx,
-						     port,
-						     other_priv->dsa_8021q_ctx,
-						     other_port);
-		if (rc)
-			return rc;
-
-		rc = dsa_8021q_crosschip_bridge_join(other_priv->dsa_8021q_ctx,
-						     other_port,
-						     priv->dsa_8021q_ctx,
-						     port);
-		if (rc)
-			return rc;
-	}
-
-	return 0;
-}
-
-static void sja1105_crosschip_bridge_leave(struct dsa_switch *ds,
-					   int tree_index, int sw_index,
-					   int other_port,
-					   struct net_device *br)
-{
-	struct dsa_switch *other_ds = dsa_switch_find(tree_index, sw_index);
-	struct sja1105_private *other_priv = other_ds->priv;
-	struct sja1105_private *priv = ds->priv;
-	int port;
-
-	if (other_ds->ops != &sja1105_switch_ops)
-		return;
-
-	for (port = 0; port < ds->num_ports; port++) {
-		if (!dsa_is_user_port(ds, port))
-			continue;
-		if (dsa_to_port(ds, port)->bridge_dev != br)
-			continue;
-
-		dsa_8021q_crosschip_bridge_leave(priv->dsa_8021q_ctx, port,
-						 other_priv->dsa_8021q_ctx,
-						 other_port);
-
-		dsa_8021q_crosschip_bridge_leave(other_priv->dsa_8021q_ctx,
-						 other_port,
-						 priv->dsa_8021q_ctx, port);
-	}
-}
-
-static int sja1105_setup_8021q_tagging(struct dsa_switch *ds, bool enabled)
-{
-	struct sja1105_private *priv = ds->priv;
-	int rc;
-
-	rc = dsa_8021q_setup(priv->dsa_8021q_ctx, enabled);
-	if (rc)
-		return rc;
-
-	dev_info(ds->dev, "%s switch tagging\n",
-		 enabled ? "Enabled" : "Disabled");
-	return 0;
-}
-
 static enum dsa_tag_protocol
 sja1105_get_tag_protocol(struct dsa_switch *ds, int port,
 			 enum dsa_tag_protocol mp)
@@ -2139,669 +2262,6 @@ sja1105_get_tag_protocol(struct dsa_switch *ds, int port,
 	return priv->info->tag_proto;
 }
 
-static int sja1105_find_free_subvlan(u16 *subvlan_map, bool pvid)
-{
-	int subvlan;
-
-	if (pvid)
-		return 0;
-
-	for (subvlan = 1; subvlan < DSA_8021Q_N_SUBVLAN; subvlan++)
-		if (subvlan_map[subvlan] == VLAN_N_VID)
-			return subvlan;
-
-	return -1;
-}
-
-static int sja1105_find_subvlan(u16 *subvlan_map, u16 vid)
-{
-	int subvlan;
-
-	for (subvlan = 0; subvlan < DSA_8021Q_N_SUBVLAN; subvlan++)
-		if (subvlan_map[subvlan] == vid)
-			return subvlan;
-
-	return -1;
-}
-
-static int sja1105_find_committed_subvlan(struct sja1105_private *priv,
-					  int port, u16 vid)
-{
-	struct sja1105_port *sp = &priv->ports[port];
-
-	return sja1105_find_subvlan(sp->subvlan_map, vid);
-}
-
-static void sja1105_init_subvlan_map(u16 *subvlan_map)
-{
-	int subvlan;
-
-	for (subvlan = 0; subvlan < DSA_8021Q_N_SUBVLAN; subvlan++)
-		subvlan_map[subvlan] = VLAN_N_VID;
-}
-
-static void sja1105_commit_subvlan_map(struct sja1105_private *priv, int port,
-				       u16 *subvlan_map)
-{
-	struct sja1105_port *sp = &priv->ports[port];
-	int subvlan;
-
-	for (subvlan = 0; subvlan < DSA_8021Q_N_SUBVLAN; subvlan++)
-		sp->subvlan_map[subvlan] = subvlan_map[subvlan];
-}
-
-static int sja1105_is_vlan_configured(struct sja1105_private *priv, u16 vid)
-{
-	struct sja1105_vlan_lookup_entry *vlan;
-	int count, i;
-
-	vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries;
-	count = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entry_count;
-
-	for (i = 0; i < count; i++)
-		if (vlan[i].vlanid == vid)
-			return i;
-
-	/* Return an invalid entry index if not found */
-	return -1;
-}
-
-static int
-sja1105_find_retagging_entry(struct sja1105_retagging_entry *retagging,
-			     int count, int from_port, u16 from_vid,
-			     u16 to_vid)
-{
-	int i;
-
-	for (i = 0; i < count; i++)
-		if (retagging[i].ing_port == BIT(from_port) &&
-		    retagging[i].vlan_ing == from_vid &&
-		    retagging[i].vlan_egr == to_vid)
-			return i;
-
-	/* Return an invalid entry index if not found */
-	return -1;
-}
-
-static int sja1105_commit_vlans(struct sja1105_private *priv,
-				struct sja1105_vlan_lookup_entry *new_vlan,
-				struct sja1105_retagging_entry *new_retagging,
-				int num_retagging)
-{
-	struct sja1105_retagging_entry *retagging;
-	struct sja1105_vlan_lookup_entry *vlan;
-	struct sja1105_table *table;
-	int num_vlans = 0;
-	int rc, i, k = 0;
-
-	/* VLAN table */
-	table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
-	vlan = table->entries;
-
-	for (i = 0; i < VLAN_N_VID; i++) {
-		int match = sja1105_is_vlan_configured(priv, i);
-
-		if (new_vlan[i].vlanid != VLAN_N_VID)
-			num_vlans++;
-
-		if (new_vlan[i].vlanid == VLAN_N_VID && match >= 0) {
-			/* Was there before, no longer is. Delete */
-			dev_dbg(priv->ds->dev, "Deleting VLAN %d\n", i);
-			rc = sja1105_dynamic_config_write(priv,
-							  BLK_IDX_VLAN_LOOKUP,
-							  i, &vlan[match], false);
-			if (rc < 0)
-				return rc;
-		} else if (new_vlan[i].vlanid != VLAN_N_VID) {
-			/* Nothing changed, don't do anything */
-			if (match >= 0 &&
-			    vlan[match].vlanid == new_vlan[i].vlanid &&
-			    vlan[match].tag_port == new_vlan[i].tag_port &&
-			    vlan[match].vlan_bc == new_vlan[i].vlan_bc &&
-			    vlan[match].vmemb_port == new_vlan[i].vmemb_port)
-				continue;
-			/* Update entry */
-			dev_dbg(priv->ds->dev, "Updating VLAN %d\n", i);
-			rc = sja1105_dynamic_config_write(priv,
-							  BLK_IDX_VLAN_LOOKUP,
-							  i, &new_vlan[i],
-							  true);
-			if (rc < 0)
-				return rc;
-		}
-	}
-
-	if (table->entry_count)
-		kfree(table->entries);
-
-	table->entries = kcalloc(num_vlans, table->ops->unpacked_entry_size,
-				 GFP_KERNEL);
-	if (!table->entries)
-		return -ENOMEM;
-
-	table->entry_count = num_vlans;
-	vlan = table->entries;
-
-	for (i = 0; i < VLAN_N_VID; i++) {
-		if (new_vlan[i].vlanid == VLAN_N_VID)
-			continue;
-		vlan[k++] = new_vlan[i];
-	}
-
-	/* VLAN Retagging Table */
-	table = &priv->static_config.tables[BLK_IDX_RETAGGING];
-	retagging = table->entries;
-
-	for (i = 0; i < table->entry_count; i++) {
-		rc = sja1105_dynamic_config_write(priv, BLK_IDX_RETAGGING,
-						  i, &retagging[i], false);
-		if (rc)
-			return rc;
-	}
-
-	if (table->entry_count)
-		kfree(table->entries);
-
-	table->entries = kcalloc(num_retagging, table->ops->unpacked_entry_size,
-				 GFP_KERNEL);
-	if (!table->entries)
-		return -ENOMEM;
-
-	table->entry_count = num_retagging;
-	retagging = table->entries;
-
-	for (i = 0; i < num_retagging; i++) {
-		retagging[i] = new_retagging[i];
-
-		/* Update entry */
-		rc = sja1105_dynamic_config_write(priv, BLK_IDX_RETAGGING,
-						  i, &retagging[i], true);
-		if (rc < 0)
-			return rc;
-	}
-
-	return 0;
-}
-
-struct sja1105_crosschip_vlan {
-	struct list_head list;
-	u16 vid;
-	bool untagged;
-	int port;
-	int other_port;
-	struct dsa_8021q_context *other_ctx;
-};
-
-struct sja1105_crosschip_switch {
-	struct list_head list;
-	struct dsa_8021q_context *other_ctx;
-};
-
-static int sja1105_commit_pvid(struct sja1105_private *priv)
-{
-	struct sja1105_bridge_vlan *v;
-	struct list_head *vlan_list;
-	int rc = 0;
-
-	if (priv->vlan_state == SJA1105_VLAN_FILTERING_FULL)
-		vlan_list = &priv->bridge_vlans;
-	else
-		vlan_list = &priv->dsa_8021q_vlans;
-
-	list_for_each_entry(v, vlan_list, list) {
-		if (v->pvid) {
-			rc = sja1105_pvid_apply(priv, v->port, v->vid);
-			if (rc)
-				break;
-		}
-	}
-
-	return rc;
-}
-
-static int
-sja1105_build_bridge_vlans(struct sja1105_private *priv,
-			   struct sja1105_vlan_lookup_entry *new_vlan)
-{
-	struct sja1105_bridge_vlan *v;
-
-	if (priv->vlan_state == SJA1105_VLAN_UNAWARE)
-		return 0;
-
-	list_for_each_entry(v, &priv->bridge_vlans, list) {
-		int match = v->vid;
-
-		new_vlan[match].vlanid = v->vid;
-		new_vlan[match].vmemb_port |= BIT(v->port);
-		new_vlan[match].vlan_bc |= BIT(v->port);
-		if (!v->untagged)
-			new_vlan[match].tag_port |= BIT(v->port);
-		new_vlan[match].type_entry = SJA1110_VLAN_D_TAG;
-	}
-
-	return 0;
-}
-
-static int
-sja1105_build_dsa_8021q_vlans(struct sja1105_private *priv,
-			      struct sja1105_vlan_lookup_entry *new_vlan)
-{
-	struct sja1105_bridge_vlan *v;
-
-	if (priv->vlan_state == SJA1105_VLAN_FILTERING_FULL)
-		return 0;
-
-	list_for_each_entry(v, &priv->dsa_8021q_vlans, list) {
-		int match = v->vid;
-
-		new_vlan[match].vlanid = v->vid;
-		new_vlan[match].vmemb_port |= BIT(v->port);
-		new_vlan[match].vlan_bc |= BIT(v->port);
-		if (!v->untagged)
-			new_vlan[match].tag_port |= BIT(v->port);
-		new_vlan[match].type_entry = SJA1110_VLAN_D_TAG;
-	}
-
-	return 0;
-}
-
-static int sja1105_build_subvlans(struct sja1105_private *priv,
-				  u16 subvlan_map[][DSA_8021Q_N_SUBVLAN],
-				  struct sja1105_vlan_lookup_entry *new_vlan,
-				  struct sja1105_retagging_entry *new_retagging,
-				  int *num_retagging)
-{
-	struct sja1105_bridge_vlan *v;
-	int k = *num_retagging;
-
-	if (priv->vlan_state != SJA1105_VLAN_BEST_EFFORT)
-		return 0;
-
-	list_for_each_entry(v, &priv->bridge_vlans, list) {
-		int upstream = dsa_upstream_port(priv->ds, v->port);
-		int match, subvlan;
-		u16 rx_vid;
-
-		/* Only sub-VLANs on user ports need to be applied.
-		 * Bridge VLANs also include VLANs added automatically
-		 * by DSA on the CPU port.
-		 */
-		if (!dsa_is_user_port(priv->ds, v->port))
-			continue;
-
-		subvlan = sja1105_find_subvlan(subvlan_map[v->port],
-					       v->vid);
-		if (subvlan < 0) {
-			subvlan = sja1105_find_free_subvlan(subvlan_map[v->port],
-							    v->pvid);
-			if (subvlan < 0) {
-				dev_err(priv->ds->dev, "No more free subvlans\n");
-				return -ENOSPC;
-			}
-		}
-
-		rx_vid = dsa_8021q_rx_vid_subvlan(priv->ds, v->port, subvlan);
-
-		/* @v->vid on @v->port needs to be retagged to @rx_vid
-		 * on @upstream. Assume @v->vid on @v->port and on
-		 * @upstream was already configured by the previous
-		 * iteration over bridge_vlans.
-		 */
-		match = rx_vid;
-		new_vlan[match].vlanid = rx_vid;
-		new_vlan[match].vmemb_port |= BIT(v->port);
-		new_vlan[match].vmemb_port |= BIT(upstream);
-		new_vlan[match].vlan_bc |= BIT(v->port);
-		new_vlan[match].vlan_bc |= BIT(upstream);
-		/* The "untagged" flag is set the same as for the
-		 * original VLAN
-		 */
-		if (!v->untagged)
-			new_vlan[match].tag_port |= BIT(v->port);
-		/* But it's always tagged towards the CPU */
-		new_vlan[match].tag_port |= BIT(upstream);
-		new_vlan[match].type_entry = SJA1110_VLAN_D_TAG;
-
-		/* The Retagging Table generates packet *clones* with
-		 * the new VLAN. This is a very odd hardware quirk
-		 * which we need to suppress by dropping the original
-		 * packet.
-		 * Deny egress of the original VLAN towards the CPU
-		 * port. This will force the switch to drop it, and
-		 * we'll see only the retagged packets.
-		 */
-		match = v->vid;
-		new_vlan[match].vlan_bc &= ~BIT(upstream);
-
-		/* And the retagging itself */
-		new_retagging[k].vlan_ing = v->vid;
-		new_retagging[k].vlan_egr = rx_vid;
-		new_retagging[k].ing_port = BIT(v->port);
-		new_retagging[k].egr_port = BIT(upstream);
-		if (k++ == SJA1105_MAX_RETAGGING_COUNT) {
-			dev_err(priv->ds->dev, "No more retagging rules\n");
-			return -ENOSPC;
-		}
-
-		subvlan_map[v->port][subvlan] = v->vid;
-	}
-
-	*num_retagging = k;
-
-	return 0;
-}
-
-/* Sadly, in crosschip scenarios where the CPU port is also the link to another
- * switch, we should retag backwards (the dsa_8021q vid to the original vid) on
- * the CPU port of neighbour switches.
- */
-static int
-sja1105_build_crosschip_subvlans(struct sja1105_private *priv,
-				 struct sja1105_vlan_lookup_entry *new_vlan,
-				 struct sja1105_retagging_entry *new_retagging,
-				 int *num_retagging)
-{
-	struct sja1105_crosschip_vlan *tmp, *pos;
-	struct dsa_8021q_crosschip_link *c;
-	struct sja1105_bridge_vlan *v, *w;
-	struct list_head crosschip_vlans;
-	int k = *num_retagging;
-	int rc = 0;
-
-	if (priv->vlan_state != SJA1105_VLAN_BEST_EFFORT)
-		return 0;
-
-	INIT_LIST_HEAD(&crosschip_vlans);
-
-	list_for_each_entry(c, &priv->dsa_8021q_ctx->crosschip_links, list) {
-		struct sja1105_private *other_priv = c->other_ctx->ds->priv;
-
-		if (other_priv->vlan_state == SJA1105_VLAN_FILTERING_FULL)
-			continue;
-
-		/* Crosschip links are also added to the CPU ports.
-		 * Ignore those.
-		 */
-		if (!dsa_is_user_port(priv->ds, c->port))
-			continue;
-		if (!dsa_is_user_port(c->other_ctx->ds, c->other_port))
-			continue;
-
-		/* Search for VLANs on the remote port */
-		list_for_each_entry(v, &other_priv->bridge_vlans, list) {
-			bool already_added = false;
-			bool we_have_it = false;
-
-			if (v->port != c->other_port)
-				continue;
-
-			/* If @v is a pvid on @other_ds, it does not need
-			 * re-retagging, because its SVL field is 0 and we
-			 * already allow that, via the dsa_8021q crosschip
-			 * links.
-			 */
-			if (v->pvid)
-				continue;
-
-			/* Search for the VLAN on our local port */
-			list_for_each_entry(w, &priv->bridge_vlans, list) {
-				if (w->port == c->port && w->vid == v->vid) {
-					we_have_it = true;
-					break;
-				}
-			}
-
-			if (!we_have_it)
-				continue;
-
-			list_for_each_entry(tmp, &crosschip_vlans, list) {
-				if (tmp->vid == v->vid &&
-				    tmp->untagged == v->untagged &&
-				    tmp->port == c->port &&
-				    tmp->other_port == v->port &&
-				    tmp->other_ctx == c->other_ctx) {
-					already_added = true;
-					break;
-				}
-			}
-
-			if (already_added)
-				continue;
-
-			tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
-			if (!tmp) {
-				dev_err(priv->ds->dev, "Failed to allocate memory\n");
-				rc = -ENOMEM;
-				goto out;
-			}
-			tmp->vid = v->vid;
-			tmp->port = c->port;
-			tmp->other_port = v->port;
-			tmp->other_ctx = c->other_ctx;
-			tmp->untagged = v->untagged;
-			list_add(&tmp->list, &crosschip_vlans);
-		}
-	}
-
-	list_for_each_entry(tmp, &crosschip_vlans, list) {
-		struct sja1105_private *other_priv = tmp->other_ctx->ds->priv;
-		int upstream = dsa_upstream_port(priv->ds, tmp->port);
-		int match, subvlan;
-		u16 rx_vid;
-
-		subvlan = sja1105_find_committed_subvlan(other_priv,
-							 tmp->other_port,
-							 tmp->vid);
-		/* If this happens, it's a bug. The neighbour switch does not
-		 * have a subvlan for tmp->vid on tmp->other_port, but it
-		 * should, since we already checked for its vlan_state.
-		 */
-		if (WARN_ON(subvlan < 0)) {
-			rc = -EINVAL;
-			goto out;
-		}
-
-		rx_vid = dsa_8021q_rx_vid_subvlan(tmp->other_ctx->ds,
-						  tmp->other_port,
-						  subvlan);
-
-		/* The @rx_vid retagged from @tmp->vid on
-		 * {@tmp->other_ds, @tmp->other_port} needs to be
-		 * re-retagged to @tmp->vid on the way back to us.
-		 *
-		 * Assume the original @tmp->vid is already configured
-		 * on this local switch, otherwise we wouldn't be
-		 * retagging its subvlan on the other switch in the
-		 * first place. We just need to add a reverse retagging
-		 * rule for @rx_vid and install @rx_vid on our ports.
-		 */
-		match = rx_vid;
-		new_vlan[match].vlanid = rx_vid;
-		new_vlan[match].vmemb_port |= BIT(tmp->port);
-		new_vlan[match].vmemb_port |= BIT(upstream);
-		/* The "untagged" flag is set the same as for the
-		 * original VLAN. And towards the CPU, it doesn't
-		 * really matter, because @rx_vid will only receive
-		 * traffic on that port. For consistency with other dsa_8021q
-		 * VLANs, we'll keep the CPU port tagged.
-		 */
-		if (!tmp->untagged)
-			new_vlan[match].tag_port |= BIT(tmp->port);
-		new_vlan[match].tag_port |= BIT(upstream);
-		new_vlan[match].type_entry = SJA1110_VLAN_D_TAG;
-		/* Deny egress of @rx_vid towards our front-panel port.
-		 * This will force the switch to drop it, and we'll see
-		 * only the re-retagged packets (having the original,
-		 * pre-initial-retagging, VLAN @tmp->vid).
-		 */
-		new_vlan[match].vlan_bc &= ~BIT(tmp->port);
-
-		/* On reverse retagging, the same ingress VLAN goes to multiple
-		 * ports. So we have an opportunity to create composite rules
-		 * to not waste the limited space in the retagging table.
-		 */
-		k = sja1105_find_retagging_entry(new_retagging, *num_retagging,
-						 upstream, rx_vid, tmp->vid);
-		if (k < 0) {
-			if (*num_retagging == SJA1105_MAX_RETAGGING_COUNT) {
-				dev_err(priv->ds->dev, "No more retagging rules\n");
-				rc = -ENOSPC;
-				goto out;
-			}
-			k = (*num_retagging)++;
-		}
-		/* And the retagging itself */
-		new_retagging[k].vlan_ing = rx_vid;
-		new_retagging[k].vlan_egr = tmp->vid;
-		new_retagging[k].ing_port = BIT(upstream);
-		new_retagging[k].egr_port |= BIT(tmp->port);
-	}
-
-out:
-	list_for_each_entry_safe(tmp, pos, &crosschip_vlans, list) {
-		list_del(&tmp->list);
-		kfree(tmp);
-	}
-
-	return rc;
-}
-
-static int sja1105_build_vlan_table(struct sja1105_private *priv, bool notify);
-
-static int sja1105_notify_crosschip_switches(struct sja1105_private *priv)
-{
-	struct sja1105_crosschip_switch *s, *pos;
-	struct list_head crosschip_switches;
-	struct dsa_8021q_crosschip_link *c;
-	int rc = 0;
-
-	INIT_LIST_HEAD(&crosschip_switches);
-
-	list_for_each_entry(c, &priv->dsa_8021q_ctx->crosschip_links, list) {
-		bool already_added = false;
-
-		list_for_each_entry(s, &crosschip_switches, list) {
-			if (s->other_ctx == c->other_ctx) {
-				already_added = true;
-				break;
-			}
-		}
-
-		if (already_added)
-			continue;
-
-		s = kzalloc(sizeof(*s), GFP_KERNEL);
-		if (!s) {
-			dev_err(priv->ds->dev, "Failed to allocate memory\n");
-			rc = -ENOMEM;
-			goto out;
-		}
-		s->other_ctx = c->other_ctx;
-		list_add(&s->list, &crosschip_switches);
-	}
-
-	list_for_each_entry(s, &crosschip_switches, list) {
-		struct sja1105_private *other_priv = s->other_ctx->ds->priv;
-
-		rc = sja1105_build_vlan_table(other_priv, false);
-		if (rc)
-			goto out;
-	}
-
-out:
-	list_for_each_entry_safe(s, pos, &crosschip_switches, list) {
-		list_del(&s->list);
-		kfree(s);
-	}
-
-	return rc;
-}
-
-static int sja1105_build_vlan_table(struct sja1105_private *priv, bool notify)
-{
-	u16 subvlan_map[SJA1105_MAX_NUM_PORTS][DSA_8021Q_N_SUBVLAN];
-	struct sja1105_retagging_entry *new_retagging;
-	struct sja1105_vlan_lookup_entry *new_vlan;
-	struct sja1105_table *table;
-	int i, num_retagging = 0;
-	int rc;
-
-	table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
-	new_vlan = kcalloc(VLAN_N_VID,
-			   table->ops->unpacked_entry_size, GFP_KERNEL);
-	if (!new_vlan)
-		return -ENOMEM;
-
-	table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
-	new_retagging = kcalloc(SJA1105_MAX_RETAGGING_COUNT,
-				table->ops->unpacked_entry_size, GFP_KERNEL);
-	if (!new_retagging) {
-		kfree(new_vlan);
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < VLAN_N_VID; i++)
-		new_vlan[i].vlanid = VLAN_N_VID;
-
-	for (i = 0; i < SJA1105_MAX_RETAGGING_COUNT; i++)
-		new_retagging[i].vlan_ing = VLAN_N_VID;
-
-	for (i = 0; i < priv->ds->num_ports; i++)
-		sja1105_init_subvlan_map(subvlan_map[i]);
-
-	/* Bridge VLANs */
-	rc = sja1105_build_bridge_vlans(priv, new_vlan);
-	if (rc)
-		goto out;
-
-	/* VLANs necessary for dsa_8021q operation, given to us by tag_8021q.c:
-	 * - RX VLANs
-	 * - TX VLANs
-	 * - Crosschip links
-	 */
-	rc = sja1105_build_dsa_8021q_vlans(priv, new_vlan);
-	if (rc)
-		goto out;
-
-	/* Private VLANs necessary for dsa_8021q operation, which we need to
-	 * determine on our own:
-	 * - Sub-VLANs
-	 * - Sub-VLANs of crosschip switches
-	 */
-	rc = sja1105_build_subvlans(priv, subvlan_map, new_vlan, new_retagging,
-				    &num_retagging);
-	if (rc)
-		goto out;
-
-	rc = sja1105_build_crosschip_subvlans(priv, new_vlan, new_retagging,
-					      &num_retagging);
-	if (rc)
-		goto out;
-
-	rc = sja1105_commit_vlans(priv, new_vlan, new_retagging, num_retagging);
-	if (rc)
-		goto out;
-
-	rc = sja1105_commit_pvid(priv);
-	if (rc)
-		goto out;
-
-	for (i = 0; i < priv->ds->num_ports; i++)
-		sja1105_commit_subvlan_map(priv, i, subvlan_map[i]);
-
-	if (notify) {
-		rc = sja1105_notify_crosschip_switches(priv);
-		if (rc)
-			goto out;
-	}
-
-out:
-	kfree(new_vlan);
-	kfree(new_retagging);
-
-	return rc;
-}
-
 /* The TPID setting belongs to the General Parameters table,
  * which can only be partially reconfigured at runtime (and not the TPID).
  * So a switch reset is required.
@@ -2812,10 +2272,8 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 	struct sja1105_l2_lookup_params_entry *l2_lookup_params;
 	struct sja1105_general_params_entry *general_params;
 	struct sja1105_private *priv = ds->priv;
-	enum sja1105_vlan_state state;
 	struct sja1105_table *table;
 	struct sja1105_rule *rule;
-	bool want_tagging;
 	u16 tpid, tpid2;
 	int rc;
 
@@ -2837,28 +2295,10 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 		tpid2 = ETH_P_SJA1105;
 	}
 
-	for (port = 0; port < ds->num_ports; port++) {
-		struct sja1105_port *sp = &priv->ports[port];
-
-		if (enabled)
-			sp->xmit_tpid = priv->info->qinq_tpid;
-		else
-			sp->xmit_tpid = ETH_P_SJA1105;
-	}
-
-	if (!enabled)
-		state = SJA1105_VLAN_UNAWARE;
-	else if (priv->best_effort_vlan_filtering)
-		state = SJA1105_VLAN_BEST_EFFORT;
-	else
-		state = SJA1105_VLAN_FILTERING_FULL;
-
-	if (priv->vlan_state == state)
+	if (priv->vlan_aware == enabled)
 		return 0;
 
-	priv->vlan_state = state;
-	want_tagging = (state == SJA1105_VLAN_UNAWARE ||
-			state == SJA1105_VLAN_BEST_EFFORT);
+	priv->vlan_aware = enabled;
 
 	table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
 	general_params = table->entries;
@@ -2872,8 +2312,6 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 	general_params->incl_srcpt1 = enabled;
 	general_params->incl_srcpt0 = enabled;
 
-	want_tagging = priv->best_effort_vlan_filtering || !enabled;
-
 	/* VLAN filtering => independent VLAN learning.
 	 * No VLAN filtering (or best effort) => shared VLAN learning.
 	 *
@@ -2894,314 +2332,205 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 	 */
 	table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
 	l2_lookup_params = table->entries;
-	l2_lookup_params->shared_learn = want_tagging;
+	l2_lookup_params->shared_learn = !priv->vlan_aware;
 
-	sja1105_frame_memory_partitioning(priv);
+	for (port = 0; port < ds->num_ports; port++) {
+		if (dsa_is_unused_port(ds, port))
+			continue;
 
-	rc = sja1105_build_vlan_table(priv, false);
-	if (rc)
-		return rc;
+		rc = sja1105_commit_pvid(ds, port);
+		if (rc)
+			return rc;
+	}
 
 	rc = sja1105_static_config_reload(priv, SJA1105_VLAN_FILTERING);
 	if (rc)
 		NL_SET_ERR_MSG_MOD(extack, "Failed to change VLAN Ethertype");
 
-	/* Switch port identification based on 802.1Q is only passable
-	 * if we are not under a vlan_filtering bridge. So make sure
-	 * the two configurations are mutually exclusive (of course, the
-	 * user may know better, i.e. best_effort_vlan_filtering).
-	 */
-	return sja1105_setup_8021q_tagging(ds, want_tagging);
+	return rc;
 }
 
-/* Returns number of VLANs added (0 or 1) on success,
- * or a negative error code.
- */
-static int sja1105_vlan_add_one(struct dsa_switch *ds, int port, u16 vid,
-				u16 flags, struct list_head *vlan_list)
-{
-	bool untagged = flags & BRIDGE_VLAN_INFO_UNTAGGED;
-	bool pvid = flags & BRIDGE_VLAN_INFO_PVID;
-	struct sja1105_bridge_vlan *v;
-
-	list_for_each_entry(v, vlan_list, list) {
-		if (v->port == port && v->vid == vid) {
-			/* Already added */
-			if (v->untagged == untagged && v->pvid == pvid)
-				/* Nothing changed */
-				return 0;
-
-			/* It's the same VLAN, but some of the flags changed
-			 * and the user did not bother to delete it first.
-			 * Update it and trigger sja1105_build_vlan_table.
-			 */
-			v->untagged = untagged;
-			v->pvid = pvid;
-			return 1;
-		}
-	}
+static int sja1105_vlan_add(struct sja1105_private *priv, int port, u16 vid,
+			    u16 flags, bool allowed_ingress)
+{
+	struct sja1105_vlan_lookup_entry *vlan;
+	struct sja1105_table *table;
+	int match, rc;
 
-	v = kzalloc(sizeof(*v), GFP_KERNEL);
-	if (!v) {
-		dev_err(ds->dev, "Out of memory while storing VLAN\n");
-		return -ENOMEM;
+	table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
+
+	match = sja1105_is_vlan_configured(priv, vid);
+	if (match < 0) {
+		rc = sja1105_table_resize(table, table->entry_count + 1);
+		if (rc)
+			return rc;
+		match = table->entry_count - 1;
 	}
 
-	v->port = port;
-	v->vid = vid;
-	v->untagged = untagged;
-	v->pvid = pvid;
-	list_add(&v->list, vlan_list);
+	/* Assign pointer after the resize (it's new memory) */
+	vlan = table->entries;
+
+	vlan[match].type_entry = SJA1110_VLAN_D_TAG;
+	vlan[match].vlanid = vid;
+	vlan[match].vlan_bc |= BIT(port);
+
+	if (allowed_ingress)
+		vlan[match].vmemb_port |= BIT(port);
+	else
+		vlan[match].vmemb_port &= ~BIT(port);
+
+	if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
+		vlan[match].tag_port &= ~BIT(port);
+	else
+		vlan[match].tag_port |= BIT(port);
 
-	return 1;
+	return sja1105_dynamic_config_write(priv, BLK_IDX_VLAN_LOOKUP, vid,
+					    &vlan[match], true);
 }
 
-/* Returns number of VLANs deleted (0 or 1) */
-static int sja1105_vlan_del_one(struct dsa_switch *ds, int port, u16 vid,
-				struct list_head *vlan_list)
+static int sja1105_vlan_del(struct sja1105_private *priv, int port, u16 vid)
 {
-	struct sja1105_bridge_vlan *v, *n;
+	struct sja1105_vlan_lookup_entry *vlan;
+	struct sja1105_table *table;
+	bool keep = true;
+	int match, rc;
 
-	list_for_each_entry_safe(v, n, vlan_list, list) {
-		if (v->port == port && v->vid == vid) {
-			list_del(&v->list);
-			kfree(v);
-			return 1;
-		}
-	}
+	table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
+
+	match = sja1105_is_vlan_configured(priv, vid);
+	/* Can't delete a missing entry. */
+	if (match < 0)
+		return 0;
+
+	/* Assign pointer after the resize (it's new memory) */
+	vlan = table->entries;
+
+	vlan[match].vlanid = vid;
+	vlan[match].vlan_bc &= ~BIT(port);
+	vlan[match].vmemb_port &= ~BIT(port);
+	/* Also unset tag_port, just so we don't have a confusing bitmap
+	 * (no practical purpose).
+	 */
+	vlan[match].tag_port &= ~BIT(port);
+
+	/* If there's no port left as member of this VLAN,
+	 * it's time for it to go.
+	 */
+	if (!vlan[match].vmemb_port)
+		keep = false;
+
+	rc = sja1105_dynamic_config_write(priv, BLK_IDX_VLAN_LOOKUP, vid,
+					  &vlan[match], keep);
+	if (rc < 0)
+		return rc;
+
+	if (!keep)
+		return sja1105_table_delete_entry(table, match);
 
 	return 0;
 }
 
-static int sja1105_vlan_add(struct dsa_switch *ds, int port,
-			    const struct switchdev_obj_port_vlan *vlan,
-			    struct netlink_ext_ack *extack)
+static int sja1105_bridge_vlan_add(struct dsa_switch *ds, int port,
+				   const struct switchdev_obj_port_vlan *vlan,
+				   struct netlink_ext_ack *extack)
 {
 	struct sja1105_private *priv = ds->priv;
-	bool vlan_table_changed = false;
+	u16 flags = vlan->flags;
 	int rc;
 
-	/* If the user wants best-effort VLAN filtering (aka vlan_filtering
-	 * bridge plus tagging), be sure to at least deny alterations to the
-	 * configuration done by dsa_8021q.
+	/* Be sure to deny alterations to the configuration done by tag_8021q.
 	 */
-	if (priv->vlan_state != SJA1105_VLAN_FILTERING_FULL &&
-	    vid_is_dsa_8021q(vlan->vid)) {
+	if (vid_is_dsa_8021q(vlan->vid)) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Range 1024-3071 reserved for dsa_8021q operation");
 		return -EBUSY;
 	}
 
-	rc = sja1105_vlan_add_one(ds, port, vlan->vid, vlan->flags,
-				  &priv->bridge_vlans);
-	if (rc < 0)
+	/* Always install bridge VLANs as egress-tagged on CPU and DSA ports */
+	if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
+		flags = 0;
+
+	rc = sja1105_vlan_add(priv, port, vlan->vid, flags, true);
+	if (rc)
 		return rc;
-	if (rc > 0)
-		vlan_table_changed = true;
 
-	if (!vlan_table_changed)
-		return 0;
+	if (vlan->flags & BRIDGE_VLAN_INFO_PVID)
+		priv->bridge_pvid[port] = vlan->vid;
 
-	return sja1105_build_vlan_table(priv, true);
+	return sja1105_commit_pvid(ds, port);
 }
 
-static int sja1105_vlan_del(struct dsa_switch *ds, int port,
-			    const struct switchdev_obj_port_vlan *vlan)
+static int sja1105_bridge_vlan_del(struct dsa_switch *ds, int port,
+				   const struct switchdev_obj_port_vlan *vlan)
 {
 	struct sja1105_private *priv = ds->priv;
-	bool vlan_table_changed = false;
 	int rc;
 
-	rc = sja1105_vlan_del_one(ds, port, vlan->vid, &priv->bridge_vlans);
-	if (rc > 0)
-		vlan_table_changed = true;
-
-	if (!vlan_table_changed)
-		return 0;
+	rc = sja1105_vlan_del(priv, port, vlan->vid);
+	if (rc)
+		return rc;
 
-	return sja1105_build_vlan_table(priv, true);
+	/* In case the pvid was deleted, make sure that untagged packets will
+	 * be dropped.
+	 */
+	return sja1105_commit_pvid(ds, port);
 }
 
 static int sja1105_dsa_8021q_vlan_add(struct dsa_switch *ds, int port, u16 vid,
 				      u16 flags)
 {
 	struct sja1105_private *priv = ds->priv;
+	bool allowed_ingress = true;
 	int rc;
 
-	rc = sja1105_vlan_add_one(ds, port, vid, flags, &priv->dsa_8021q_vlans);
-	if (rc <= 0)
+	/* Prevent attackers from trying to inject a DSA tag from
+	 * the outside world.
+	 */
+	if (dsa_is_user_port(ds, port))
+		allowed_ingress = false;
+
+	rc = sja1105_vlan_add(priv, port, vid, flags, allowed_ingress);
+	if (rc)
 		return rc;
 
-	return sja1105_build_vlan_table(priv, true);
+	if (flags & BRIDGE_VLAN_INFO_PVID)
+		priv->tag_8021q_pvid[port] = vid;
+
+	return sja1105_commit_pvid(ds, port);
 }
 
 static int sja1105_dsa_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)
 {
 	struct sja1105_private *priv = ds->priv;
-	int rc;
-
-	rc = sja1105_vlan_del_one(ds, port, vid, &priv->dsa_8021q_vlans);
-	if (!rc)
-		return 0;
 
-	return sja1105_build_vlan_table(priv, true);
+	return sja1105_vlan_del(priv, port, vid);
 }
 
-static const struct dsa_8021q_ops sja1105_dsa_8021q_ops = {
-	.vlan_add	= sja1105_dsa_8021q_vlan_add,
-	.vlan_del	= sja1105_dsa_8021q_vlan_del,
-};
-
-/* The programming model for the SJA1105 switch is "all-at-once" via static
- * configuration tables. Some of these can be dynamically modified at runtime,
- * but not the xMII mode parameters table.
- * Furthermode, some PHYs may not have crystals for generating their clocks
- * (e.g. RMII). Instead, their 50MHz clock is supplied via the SJA1105 port's
- * ref_clk pin. So port clocking needs to be initialized early, before
- * connecting to PHYs is attempted, otherwise they won't respond through MDIO.
- * Setting correct PHY link speed does not matter now.
- * But dsa_slave_phy_setup is called later than sja1105_setup, so the PHY
- * bindings are not yet parsed by DSA core. We need to parse early so that we
- * can populate the xMII mode parameters table.
- */
-static int sja1105_setup(struct dsa_switch *ds)
+static int sja1105_prechangeupper(struct dsa_switch *ds, int port,
+				  struct netdev_notifier_changeupper_info *info)
 {
-	struct sja1105_private *priv = ds->priv;
-	int rc;
+	struct netlink_ext_ack *extack = info->info.extack;
+	struct net_device *upper = info->upper_dev;
+	struct dsa_switch_tree *dst = ds->dst;
+	struct dsa_port *dp;
 
-	rc = sja1105_parse_dt(priv);
-	if (rc < 0) {
-		dev_err(ds->dev, "Failed to parse DT: %d\n", rc);
-		return rc;
-	}
-
-	/* Error out early if internal delays are required through DT
-	 * and we can't apply them.
-	 */
-	rc = sja1105_parse_rgmii_delays(priv);
-	if (rc < 0) {
-		dev_err(ds->dev, "RGMII delay not supported\n");
-		return rc;
-	}
-
-	rc = sja1105_ptp_clock_register(ds);
-	if (rc < 0) {
-		dev_err(ds->dev, "Failed to register PTP clock: %d\n", rc);
-		return rc;
-	}
-
-	rc = sja1105_mdiobus_register(ds);
-	if (rc < 0) {
-		dev_err(ds->dev, "Failed to register MDIO bus: %pe\n",
-			ERR_PTR(rc));
-		goto out_ptp_clock_unregister;
-	}
-
-	if (priv->info->disable_microcontroller) {
-		rc = priv->info->disable_microcontroller(priv);
-		if (rc < 0) {
-			dev_err(ds->dev,
-				"Failed to disable microcontroller: %pe\n",
-				ERR_PTR(rc));
-			goto out_mdiobus_unregister;
-		}
-	}
-
-	/* Create and send configuration down to device */
-	rc = sja1105_static_config_load(priv);
-	if (rc < 0) {
-		dev_err(ds->dev, "Failed to load static config: %d\n", rc);
-		goto out_mdiobus_unregister;
+	if (is_vlan_dev(upper)) {
+		NL_SET_ERR_MSG_MOD(extack, "8021q uppers are not supported");
+		return -EBUSY;
 	}
 
-	/* Configure the CGU (PHY link modes and speeds) */
-	if (priv->info->clocking_setup) {
-		rc = priv->info->clocking_setup(priv);
-		if (rc < 0) {
-			dev_err(ds->dev,
-				"Failed to configure MII clocking: %pe\n",
-				ERR_PTR(rc));
-			goto out_static_config_free;
+	if (netif_is_bridge_master(upper)) {
+		list_for_each_entry(dp, &dst->ports, list) {
+			if (dp->bridge_dev && dp->bridge_dev != upper &&
+			    br_vlan_enabled(dp->bridge_dev)) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "Only one VLAN-aware bridge is supported");
+				return -EBUSY;
+			}
 		}
 	}
 
-	/* On SJA1105, VLAN filtering per se is always enabled in hardware.
-	 * The only thing we can do to disable it is lie about what the 802.1Q
-	 * EtherType is.
-	 * So it will still try to apply VLAN filtering, but all ingress
-	 * traffic (except frames received with EtherType of ETH_P_SJA1105)
-	 * will be internally tagged with a distorted VLAN header where the
-	 * TPID is ETH_P_SJA1105, and the VLAN ID is the port pvid.
-	 */
-	ds->vlan_filtering_is_global = true;
-
-	/* Advertise the 8 egress queues */
-	ds->num_tx_queues = SJA1105_NUM_TC;
-
-	ds->mtu_enforcement_ingress = true;
-
-	priv->best_effort_vlan_filtering = true;
-
-	rc = sja1105_devlink_setup(ds);
-	if (rc < 0)
-		goto out_static_config_free;
-
-	/* The DSA/switchdev model brings up switch ports in standalone mode by
-	 * default, and that means vlan_filtering is 0 since they're not under
-	 * a bridge, so it's safe to set up switch tagging at this time.
-	 */
-	rtnl_lock();
-	rc = sja1105_setup_8021q_tagging(ds, true);
-	rtnl_unlock();
-	if (rc)
-		goto out_devlink_teardown;
-
 	return 0;
-
-out_devlink_teardown:
-	sja1105_devlink_teardown(ds);
-out_mdiobus_unregister:
-	sja1105_mdiobus_unregister(ds);
-out_ptp_clock_unregister:
-	sja1105_ptp_clock_unregister(ds);
-out_static_config_free:
-	sja1105_static_config_free(&priv->static_config);
-
-	return rc;
-}
-
-static void sja1105_teardown(struct dsa_switch *ds)
-{
-	struct sja1105_private *priv = ds->priv;
-	struct sja1105_bridge_vlan *v, *n;
-	int port;
-
-	for (port = 0; port < ds->num_ports; port++) {
-		struct sja1105_port *sp = &priv->ports[port];
-
-		if (!dsa_is_user_port(ds, port))
-			continue;
-
-		if (sp->xmit_worker)
-			kthread_destroy_worker(sp->xmit_worker);
-	}
-
-	sja1105_devlink_teardown(ds);
-	sja1105_mdiobus_unregister(ds);
-	sja1105_flower_teardown(ds);
-	sja1105_tas_teardown(ds);
-	sja1105_ptp_clock_unregister(ds);
-	sja1105_static_config_free(&priv->static_config);
-
-	list_for_each_entry_safe(v, n, &priv->dsa_8021q_vlans, list) {
-		list_del(&v->list);
-		kfree(v);
-	}
-
-	list_for_each_entry_safe(v, n, &priv->bridge_vlans, list) {
-		list_del(&v->list);
-		kfree(v);
-	}
 }
 
 static void sja1105_port_disable(struct dsa_switch *ds, int port)
@@ -3337,7 +2666,7 @@ static int sja1105_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 
 	new_mtu += VLAN_ETH_HLEN + ETH_FCS_LEN;
 
-	if (dsa_is_cpu_port(ds, port))
+	if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
 		new_mtu += VLAN_HLEN;
 
 	policing = priv->static_config.tables[BLK_IDX_L2_POLICING].entries;
@@ -3484,23 +2813,13 @@ static int sja1105_port_set_learning(struct sja1105_private *priv, int port,
 				     bool enabled)
 {
 	struct sja1105_mac_config_entry *mac;
-	int rc;
 
 	mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
 
 	mac[port].dyn_learn = enabled;
 
-	rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
-					  &mac[port], true);
-	if (rc)
-		return rc;
-
-	if (enabled)
-		priv->learn_ena |= BIT(port);
-	else
-		priv->learn_ena &= ~BIT(port);
-
-	return 0;
+	return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
+					    &mac[port], true);
 }
 
 static int sja1105_port_ucast_bcast_flood(struct sja1105_private *priv, int to,
@@ -3616,7 +2935,189 @@ static int sja1105_port_bridge_flags(struct dsa_switch *ds, int port,
 	return 0;
 }
 
-static const struct dsa_switch_ops sja1105_switch_ops = {
+static void sja1105_teardown_ports(struct sja1105_private *priv)
+{
+	struct dsa_switch *ds = priv->ds;
+	int port;
+
+	for (port = 0; port < ds->num_ports; port++) {
+		struct sja1105_port *sp = &priv->ports[port];
+
+		if (sp->xmit_worker)
+			kthread_destroy_worker(sp->xmit_worker);
+	}
+}
+
+static int sja1105_setup_ports(struct sja1105_private *priv)
+{
+	struct sja1105_tagger_data *tagger_data = &priv->tagger_data;
+	struct dsa_switch *ds = priv->ds;
+	int port, rc;
+
+	/* Connections between dsa_port and sja1105_port */
+	for (port = 0; port < ds->num_ports; port++) {
+		struct sja1105_port *sp = &priv->ports[port];
+		struct dsa_port *dp = dsa_to_port(ds, port);
+		struct kthread_worker *worker;
+		struct net_device *slave;
+
+		if (!dsa_port_is_user(dp))
+			continue;
+
+		dp->priv = sp;
+		sp->dp = dp;
+		sp->data = tagger_data;
+		slave = dp->slave;
+		kthread_init_work(&sp->xmit_work, sja1105_port_deferred_xmit);
+		worker = kthread_create_worker(0, "%s_xmit", slave->name);
+		if (IS_ERR(worker)) {
+			rc = PTR_ERR(worker);
+			dev_err(ds->dev,
+				"failed to create deferred xmit thread: %d\n",
+				rc);
+			goto out_destroy_workers;
+		}
+		sp->xmit_worker = worker;
+		skb_queue_head_init(&sp->xmit_queue);
+	}
+
+	return 0;
+
+out_destroy_workers:
+	sja1105_teardown_ports(priv);
+	return rc;
+}
+
+/* The programming model for the SJA1105 switch is "all-at-once" via static
+ * configuration tables. Some of these can be dynamically modified at runtime,
+ * but not the xMII mode parameters table.
+ * Furthermode, some PHYs may not have crystals for generating their clocks
+ * (e.g. RMII). Instead, their 50MHz clock is supplied via the SJA1105 port's
+ * ref_clk pin. So port clocking needs to be initialized early, before
+ * connecting to PHYs is attempted, otherwise they won't respond through MDIO.
+ * Setting correct PHY link speed does not matter now.
+ * But dsa_slave_phy_setup is called later than sja1105_setup, so the PHY
+ * bindings are not yet parsed by DSA core. We need to parse early so that we
+ * can populate the xMII mode parameters table.
+ */
+static int sja1105_setup(struct dsa_switch *ds)
+{
+	struct sja1105_private *priv = ds->priv;
+	int rc;
+
+	if (priv->info->disable_microcontroller) {
+		rc = priv->info->disable_microcontroller(priv);
+		if (rc < 0) {
+			dev_err(ds->dev,
+				"Failed to disable microcontroller: %pe\n",
+				ERR_PTR(rc));
+			return rc;
+		}
+	}
+
+	/* Create and send configuration down to device */
+	rc = sja1105_static_config_load(priv);
+	if (rc < 0) {
+		dev_err(ds->dev, "Failed to load static config: %d\n", rc);
+		return rc;
+	}
+
+	/* Configure the CGU (PHY link modes and speeds) */
+	if (priv->info->clocking_setup) {
+		rc = priv->info->clocking_setup(priv);
+		if (rc < 0) {
+			dev_err(ds->dev,
+				"Failed to configure MII clocking: %pe\n",
+				ERR_PTR(rc));
+			goto out_static_config_free;
+		}
+	}
+
+	rc = sja1105_setup_ports(priv);
+	if (rc)
+		goto out_static_config_free;
+
+	sja1105_tas_setup(ds);
+	sja1105_flower_setup(ds);
+
+	rc = sja1105_ptp_clock_register(ds);
+	if (rc < 0) {
+		dev_err(ds->dev, "Failed to register PTP clock: %d\n", rc);
+		goto out_flower_teardown;
+	}
+
+	rc = sja1105_mdiobus_register(ds);
+	if (rc < 0) {
+		dev_err(ds->dev, "Failed to register MDIO bus: %pe\n",
+			ERR_PTR(rc));
+		goto out_ptp_clock_unregister;
+	}
+
+	rc = sja1105_devlink_setup(ds);
+	if (rc < 0)
+		goto out_mdiobus_unregister;
+
+	rtnl_lock();
+	rc = dsa_tag_8021q_register(ds, htons(ETH_P_8021Q));
+	rtnl_unlock();
+	if (rc)
+		goto out_devlink_teardown;
+
+	/* On SJA1105, VLAN filtering per se is always enabled in hardware.
+	 * The only thing we can do to disable it is lie about what the 802.1Q
+	 * EtherType is.
+	 * So it will still try to apply VLAN filtering, but all ingress
+	 * traffic (except frames received with EtherType of ETH_P_SJA1105)
+	 * will be internally tagged with a distorted VLAN header where the
+	 * TPID is ETH_P_SJA1105, and the VLAN ID is the port pvid.
+	 */
+	ds->vlan_filtering_is_global = true;
+	ds->untag_bridge_pvid = true;
+	/* tag_8021q has 3 bits for the VBID, and the value 0 is reserved */
+	ds->num_fwd_offloading_bridges = 7;
+
+	/* Advertise the 8 egress queues */
+	ds->num_tx_queues = SJA1105_NUM_TC;
+
+	ds->mtu_enforcement_ingress = true;
+	ds->assisted_learning_on_cpu_port = true;
+
+	return 0;
+
+out_devlink_teardown:
+	sja1105_devlink_teardown(ds);
+out_mdiobus_unregister:
+	sja1105_mdiobus_unregister(ds);
+out_ptp_clock_unregister:
+	sja1105_ptp_clock_unregister(ds);
+out_flower_teardown:
+	sja1105_flower_teardown(ds);
+	sja1105_tas_teardown(ds);
+	sja1105_teardown_ports(priv);
+out_static_config_free:
+	sja1105_static_config_free(&priv->static_config);
+
+	return rc;
+}
+
+static void sja1105_teardown(struct dsa_switch *ds)
+{
+	struct sja1105_private *priv = ds->priv;
+
+	rtnl_lock();
+	dsa_tag_8021q_unregister(ds);
+	rtnl_unlock();
+
+	sja1105_devlink_teardown(ds);
+	sja1105_mdiobus_unregister(ds);
+	sja1105_ptp_clock_unregister(ds);
+	sja1105_flower_teardown(ds);
+	sja1105_tas_teardown(ds);
+	sja1105_teardown_ports(priv);
+	sja1105_static_config_free(&priv->static_config);
+}
+
+const struct dsa_switch_ops sja1105_switch_ops = {
 	.get_tag_protocol	= sja1105_get_tag_protocol,
 	.setup			= sja1105_setup,
 	.teardown		= sja1105_teardown,
@@ -3635,14 +3136,15 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.port_fdb_dump		= sja1105_fdb_dump,
 	.port_fdb_add		= sja1105_fdb_add,
 	.port_fdb_del		= sja1105_fdb_del,
+	.port_fast_age		= sja1105_fast_age,
 	.port_bridge_join	= sja1105_bridge_join,
 	.port_bridge_leave	= sja1105_bridge_leave,
 	.port_pre_bridge_flags	= sja1105_port_pre_bridge_flags,
 	.port_bridge_flags	= sja1105_port_bridge_flags,
 	.port_stp_state_set	= sja1105_bridge_stp_state_set,
 	.port_vlan_filtering	= sja1105_vlan_filtering,
-	.port_vlan_add		= sja1105_vlan_add,
-	.port_vlan_del		= sja1105_vlan_del,
+	.port_vlan_add		= sja1105_bridge_vlan_add,
+	.port_vlan_del		= sja1105_bridge_vlan_del,
 	.port_mdb_add		= sja1105_mdb_add,
 	.port_mdb_del		= sja1105_mdb_del,
 	.port_hwtstamp_get	= sja1105_hwtstamp_get,
@@ -3657,12 +3159,14 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.cls_flower_add		= sja1105_cls_flower_add,
 	.cls_flower_del		= sja1105_cls_flower_del,
 	.cls_flower_stats	= sja1105_cls_flower_stats,
-	.crosschip_bridge_join	= sja1105_crosschip_bridge_join,
-	.crosschip_bridge_leave	= sja1105_crosschip_bridge_leave,
-	.devlink_param_get	= sja1105_devlink_param_get,
-	.devlink_param_set	= sja1105_devlink_param_set,
 	.devlink_info_get	= sja1105_devlink_info_get,
+	.tag_8021q_vlan_add	= sja1105_dsa_8021q_vlan_add,
+	.tag_8021q_vlan_del	= sja1105_dsa_8021q_vlan_del,
+	.port_prechangeupper	= sja1105_prechangeupper,
+	.port_bridge_tx_fwd_offload = dsa_tag_8021q_bridge_tx_fwd_offload,
+	.port_bridge_tx_fwd_unoffload = dsa_tag_8021q_bridge_tx_fwd_unoffload,
 };
+EXPORT_SYMBOL_GPL(sja1105_switch_ops);
 
 static const struct of_device_id sja1105_dt_ids[];
 
@@ -3715,12 +3219,11 @@ static int sja1105_check_device_id(struct sja1105_private *priv)
 
 static int sja1105_probe(struct spi_device *spi)
 {
-	struct sja1105_tagger_data *tagger_data;
 	struct device *dev = &spi->dev;
 	struct sja1105_private *priv;
 	size_t max_xfer, max_msg;
 	struct dsa_switch *ds;
-	int rc, port;
+	int rc;
 
 	if (!dev->of_node) {
 		dev_err(dev, "No DTS bindings for SJA1105 driver\n");
@@ -3800,95 +3303,42 @@ static int sja1105_probe(struct spi_device *spi)
 	ds->priv = priv;
 	priv->ds = ds;
 
-	tagger_data = &priv->tagger_data;
-
 	mutex_init(&priv->ptp_data.lock);
 	mutex_init(&priv->mgmt_lock);
 
-	priv->dsa_8021q_ctx = devm_kzalloc(dev, sizeof(*priv->dsa_8021q_ctx),
-					   GFP_KERNEL);
-	if (!priv->dsa_8021q_ctx)
-		return -ENOMEM;
-
-	priv->dsa_8021q_ctx->ops = &sja1105_dsa_8021q_ops;
-	priv->dsa_8021q_ctx->proto = htons(ETH_P_8021Q);
-	priv->dsa_8021q_ctx->ds = ds;
-
-	INIT_LIST_HEAD(&priv->dsa_8021q_ctx->crosschip_links);
-	INIT_LIST_HEAD(&priv->bridge_vlans);
-	INIT_LIST_HEAD(&priv->dsa_8021q_vlans);
-
-	sja1105_tas_setup(ds);
-	sja1105_flower_setup(ds);
+	rc = sja1105_parse_dt(priv);
+	if (rc < 0) {
+		dev_err(ds->dev, "Failed to parse DT: %d\n", rc);
+		return rc;
+	}
 
-	rc = dsa_register_switch(priv->ds);
-	if (rc)
+	/* Error out early if internal delays are required through DT
+	 * and we can't apply them.
+	 */
+	rc = sja1105_parse_rgmii_delays(priv);
+	if (rc < 0) {
+		dev_err(ds->dev, "RGMII delay not supported\n");
 		return rc;
+	}
 
 	if (IS_ENABLED(CONFIG_NET_SCH_CBS)) {
 		priv->cbs = devm_kcalloc(dev, priv->info->num_cbs_shapers,
 					 sizeof(struct sja1105_cbs_entry),
 					 GFP_KERNEL);
-		if (!priv->cbs) {
-			rc = -ENOMEM;
-			goto out_unregister_switch;
-		}
-	}
-
-	/* Connections between dsa_port and sja1105_port */
-	for (port = 0; port < ds->num_ports; port++) {
-		struct sja1105_port *sp = &priv->ports[port];
-		struct dsa_port *dp = dsa_to_port(ds, port);
-		struct net_device *slave;
-		int subvlan;
-
-		if (!dsa_is_user_port(ds, port))
-			continue;
-
-		dp->priv = sp;
-		sp->dp = dp;
-		sp->data = tagger_data;
-		slave = dp->slave;
-		kthread_init_work(&sp->xmit_work, sja1105_port_deferred_xmit);
-		sp->xmit_worker = kthread_create_worker(0, "%s_xmit",
-							slave->name);
-		if (IS_ERR(sp->xmit_worker)) {
-			rc = PTR_ERR(sp->xmit_worker);
-			dev_err(ds->dev,
-				"failed to create deferred xmit thread: %d\n",
-				rc);
-			goto out_destroy_workers;
-		}
-		skb_queue_head_init(&sp->xmit_queue);
-		sp->xmit_tpid = ETH_P_SJA1105;
-
-		for (subvlan = 0; subvlan < DSA_8021Q_N_SUBVLAN; subvlan++)
-			sp->subvlan_map[subvlan] = VLAN_N_VID;
-	}
-
-	return 0;
-
-out_destroy_workers:
-	while (port-- > 0) {
-		struct sja1105_port *sp = &priv->ports[port];
-
-		if (!dsa_is_user_port(ds, port))
-			continue;
-
-		kthread_destroy_worker(sp->xmit_worker);
+		if (!priv->cbs)
+			return -ENOMEM;
 	}
 
-out_unregister_switch:
-	dsa_unregister_switch(ds);
-
-	return rc;
+	return dsa_register_switch(priv->ds);
 }
 
 static int sja1105_remove(struct spi_device *spi)
 {
 	struct sja1105_private *priv = spi_get_drvdata(spi);
+	struct dsa_switch *ds = priv->ds;
+
+	dsa_unregister_switch(ds);
 
-	dsa_unregister_switch(priv->ds);
 	return 0;
 }