Merge tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Introduce and use a single page frag cache for allocating small skb
     heads, clawing back the 10-20% performance regression in UDP flood
     test from previous fixes.

   - Run packets which already went thru HW coalescing thru SW GRO. This
     significantly improves TCP segment coalescing and simplifies
     deployments as different workloads benefit from HW or SW GRO.

   - Shrink the size of the base zero-copy send structure.

   - Move TCP init under a new slow / sleepable version of DO_ONCE().

  BPF:

   - Add BPF-specific, any-context-safe memory allocator.

   - Add helpers/kfuncs for PKCS#7 signature verification from BPF
     programs.

   - Define a new map type and related helpers for user space -> kernel
     communication over a ring buffer (BPF_MAP_TYPE_USER_RINGBUF).

   - Allow targeting BPF iterators to loop through resources of one
     task/thread.

   - Add ability to call selected destructive functions. Expose
     crash_kexec() to allow BPF to trigger a kernel dump. Use
     CAP_SYS_BOOT check on the loading process to judge permissions.

   - Enable BPF to collect custom hierarchical cgroup stats efficiently
     by integrating with the rstat framework.

   - Support struct arguments for trampoline based programs. Only
     structs with size <= 16B and x86 are supported.

   - Invoke cgroup/connect{4,6} programs for unprivileged ICMP ping
     sockets (instead of just TCP and UDP sockets).

   - Add a helper for accessing CLOCK_TAI for time sensitive network
     related programs.

   - Support accessing network tunnel metadata's flags.

   - Make TCP SYN ACK RTO tunable by BPF programs with TCP Fast Open.

   - Add support for writing to Netfilter's nf_conn:mark.

  Protocols:

   - WiFi: more Extremely High Throughput (EHT) and Multi-Link Operation
     (MLO) work (802.11be, WiFi 7).

   - vsock: improve support for SO_RCVLOWAT.

   - SMC: support SO_REUSEPORT.

   - Netlink: define and document how to use netlink in a "modern" way.
     Support reporting missing attributes via extended ACK.

   - IPSec: support collect metadata mode for xfrm interfaces.

   - TCPv6: send consistent autoflowlabel in SYN_RECV state and RST
     packets.

   - TCP: introduce optional per-netns connection hash table to allow
     better isolation between namespaces (opt-in, at the cost of memory
     and cache pressure).

   - MPTCP: support TCP_FASTOPEN_CONNECT.

   - Add NEXT-C-SID support in Segment Routing (SRv6) End behavior.

   - Adjust IP_UNICAST_IF sockopt behavior for connected UDP sockets.

   - Open vSwitch:
      - Allow specifying ifindex of new interfaces.
      - Allow conntrack and metering in non-initial user namespace.

   - TLS: support the Korean ARIA-GCM crypto algorithm.

   - Remove DECnet support.

  Driver API:

   - Allow selecting the conduit interface used by each port in DSA
     switches, at runtime.

   - Ethernet Power Sourcing Equipment and Power Device support.

   - Add tc-taprio support for queueMaxSDU parameter, i.e. setting per
     traffic class max frame size for time-based packet schedules.

   - Support PHY rate matching - adapting between differing host-side
     and link-side speeds.

   - Introduce QUSGMII PHY mode and 1000BASE-KX interface mode.

   - Validate OF (device tree) nodes for DSA shared ports; make
     phylink-related properties mandatory on DSA and CPU ports.
     Enforcing more uniformity should allow transitioning to phylink.

   - Require that flash component name used during update matches one of
     the components for which version is reported by info_get().

   - Remove "weight" argument from driver-facing NAPI API as much as
     possible. It's one of those magic knobs which seemed like a good
     idea at the time but is too indirect to use in practice.

   - Support offload of TLS connections with 256 bit keys.

  New hardware / drivers:

   - Ethernet:
      - Microchip KSZ9896 6-port Gigabit Ethernet Switch
      - Renesas Ethernet AVB (EtherAVB-IF) Gen4 SoCs
      - Analog Devices ADIN1110 and ADIN2111 industrial single pair
        Ethernet (10BASE-T1L) MAC+PHY.
      - Rockchip RV1126 Gigabit Ethernet (a version of stmmac IP).

   - Ethernet SFPs / modules:
      - RollBall / Hilink / Turris 10G copper SFPs
      - HALNy GPON module

   - WiFi:
      - CYW43439 SDIO chipset (brcmfmac)
      - CYW89459 PCIe chipset (brcmfmac)
      - BCM4378 on Apple platforms (brcmfmac)

  Drivers:

   - CAN:
      - gs_usb: HW timestamp support

   - Ethernet PHYs:
      - lan8814: cable diagnostics

   - Ethernet NICs:
      - Intel (100G):
         - implement control of FCS/CRC stripping
         - port splitting via devlink
         - L2TPv3 filtering offload
      - nVidia/Mellanox:
         - tunnel offload for sub-functions
         - MACSec offload, w/ Extended packet number and replay window
           offload
         - significantly restructure, and optimize the AF_XDP support,
           align the behavior with other vendors
      - Huawei:
         - configuring DSCP map for traffic class selection
         - querying standard FEC statistics
         - querying SerDes lane number via ethtool
      - Marvell/Cavium:
         - egress priority flow control
         - MACSec offload
      - AMD/SolarFlare:
         - PTP over IPv6 and raw Ethernet
      - small / embedded:
         - ax88772: convert to phylink (to support SFP cages)
         - altera: tse: convert to phylink
         - ftgmac100: support fixed link
         - enetc: standard Ethtool counters
         - macb: ZynqMP SGMII dynamic configuration support
         - tsnep: support multi-queue and use page pool
         - lan743x: Rx IP & TCP checksum offload
         - igc: add xdp frags support to ndo_xdp_xmit

   - Ethernet high-speed switches:
      - Marvell (prestera):
         - support SPAN port features (traffic mirroring)
         - nexthop object offloading
      - Microchip (sparx5):
         - multicast forwarding offload
         - QoS queuing offload (tc-mqprio, tc-tbf, tc-ets)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - support RGMII cmode
      - NXP (felix):
         - standardized ethtool counters
      - Microchip (lan966x):
         - QoS queuing offload (tc-mqprio, tc-tbf, tc-cbs, tc-ets)
         - traffic policing and mirroring
         - link aggregation / bonding offload
         - QUSGMII PHY mode support

   - Qualcomm 802.11ax WiFi (ath11k):
      - cold boot calibration support on WCN6750
      - support to connect to a non-transmit MBSSID AP profile
      - enable remain-on-channel support on WCN6750
      - Wake-on-WLAN support for WCN6750
      - support to provide transmit power from firmware via nl80211
      - support to get power save duration for each client
      - spectral scan support for 160 MHz

   - MediaTek WiFi (mt76):
      - WiFi-to-Ethernet bridging offload for MT7986 chips

   - RealTek WiFi (rtw89):
      - P2P support"

* tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1864 commits)
  eth: pse: add missing static inlines
  once: rename _SLOW to _SLEEPABLE
  net: pse-pd: add regulator based PSE driver
  dt-bindings: net: pse-dt: add bindings for regulator based PoDL PSE controller
  ethtool: add interface to interact with Ethernet Power Equipment
  net: mdiobus: search for PSE nodes by parsing PHY nodes.
  net: mdiobus: fwnode_mdiobus_register_phy() rework error handling
  net: add framework to support Ethernet PSE and PDs devices
  dt-bindings: net: phy: add PoDL PSE property
  net: marvell: prestera: Propagate nh state from hw to kernel
  net: marvell: prestera: Add neighbour cache accounting
  net: marvell: prestera: add stub handler neighbour events
  net: marvell: prestera: Add heplers to interact with fib_notifier_info
  net: marvell: prestera: Add length macros for prestera_ip_addr
  net: marvell: prestera: add delayed wq and flush wq on deinit
  net: marvell: prestera: Add strict cleanup of fib arbiter
  net: marvell: prestera: Add cleanup of allocated fib_nodes
  net: marvell: prestera: Add router nexthops ABI
  eth: octeon: fix build after netif_napi_add() changes
  net/mlx5: E-Switch, Return EBUSY if can't get mode lock
  ...

12 files changed, 633 insertions, 315 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/cmd.h b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
index 60232fb8ccd7..09bef04b11d1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/cmd.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
@@ -703,6 +703,9 @@ MLXSW_ITEM32(cmd_mbox, config_profile, max_vepa_channels, 0x10, 0, 8);
 
 /* cmd_mbox_config_profile_max_lag
  * Maximum number of LAG IDs requested.
+ * Reserved when Spectrum-1/2/3, supported from Spectrum-4 and above.
+ * For Spectrum-4, firmware sets 128 for values between 1-128 and 256 for values
+ * between 129-256.
  */
 MLXSW_ITEM32(cmd_mbox, config_profile, max_lag, 0x14, 0, 16);
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 75553eb2c7f2..e2a985ec2c76 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -70,6 +70,8 @@ struct mlxsw_core {
 	struct workqueue_struct *emad_wq;
 	struct list_head rx_listener_list;
 	struct list_head event_listener_list;
+	struct list_head irq_event_handler_list;
+	struct mutex irq_event_handler_lock; /* Locks access to handlers list */
 	struct {
 		atomic64_t tid;
 		struct list_head trans_list;
@@ -184,6 +186,23 @@ unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core)
 }
 EXPORT_SYMBOL(mlxsw_core_max_ports);
 
+int mlxsw_core_max_lag(struct mlxsw_core *mlxsw_core, u16 *p_max_lag)
+{
+	struct mlxsw_driver *driver = mlxsw_core->driver;
+
+	if (driver->profile->used_max_lag) {
+		*p_max_lag = driver->profile->max_lag;
+		return 0;
+	}
+
+	if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG))
+		return -EIO;
+
+	*p_max_lag = MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG);
+	return 0;
+}
+EXPORT_SYMBOL(mlxsw_core_max_lag);
+
 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core)
 {
 	return mlxsw_core->driver_priv;
@@ -633,7 +652,7 @@ static void mlxsw_emad_process_string_tlv(const struct sk_buff *skb,
 		return;
 
 	string = mlxsw_emad_string_tlv_string_data(string_tlv);
-	strlcpy(trans->emad_err_string, string,
+	strscpy(trans->emad_err_string, string,
 		MLXSW_EMAD_STRING_TLV_STRING_LEN);
 }
 
@@ -1305,21 +1324,6 @@ mlxsw_devlink_sb_pool_set(struct devlink *devlink,
 					 extack);
 }
 
-static int mlxsw_devlink_port_type_set(struct devlink_port *devlink_port,
-				       enum devlink_port_type port_type)
-{
-	struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink);
-	struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver;
-	struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port);
-
-	if (!mlxsw_driver->port_type_set)
-		return -EOPNOTSUPP;
-
-	return mlxsw_driver->port_type_set(mlxsw_core,
-					   mlxsw_core_port->local_port,
-					   port_type);
-}
-
 static int mlxsw_devlink_sb_port_pool_get(struct devlink_port *devlink_port,
 					  unsigned int sb_index, u16 pool_index,
 					  u32 *p_threshold)
@@ -1650,7 +1654,6 @@ static const struct devlink_ops mlxsw_devlink_ops = {
 				  BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE),
 	.reload_down		= mlxsw_devlink_core_bus_device_reload_down,
 	.reload_up		= mlxsw_devlink_core_bus_device_reload_up,
-	.port_type_set			= mlxsw_devlink_port_type_set,
 	.port_split			= mlxsw_devlink_port_split,
 	.port_unsplit			= mlxsw_devlink_port_unsplit,
 	.sb_pool_get			= mlxsw_devlink_sb_pool_get,
@@ -2090,6 +2093,18 @@ static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core)
 	devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal);
 }
 
+static void mlxsw_core_irq_event_handler_init(struct mlxsw_core *mlxsw_core)
+{
+	INIT_LIST_HEAD(&mlxsw_core->irq_event_handler_list);
+	mutex_init(&mlxsw_core->irq_event_handler_lock);
+}
+
+static void mlxsw_core_irq_event_handler_fini(struct mlxsw_core *mlxsw_core)
+{
+	mutex_destroy(&mlxsw_core->irq_event_handler_lock);
+	WARN_ON(!list_empty(&mlxsw_core->irq_event_handler_list));
+}
+
 static int
 __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 				 const struct mlxsw_bus *mlxsw_bus,
@@ -2101,6 +2116,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	struct mlxsw_core *mlxsw_core;
 	struct mlxsw_driver *mlxsw_driver;
 	size_t alloc_size;
+	u16 max_lag;
 	int err;
 
 	mlxsw_driver = mlxsw_core_driver_get(device_kind);
@@ -2125,6 +2141,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	mlxsw_core->bus = mlxsw_bus;
 	mlxsw_core->bus_priv = bus_priv;
 	mlxsw_core->bus_info = mlxsw_bus_info;
+	mlxsw_core_irq_event_handler_init(mlxsw_core);
 
 	err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile,
 			      &mlxsw_core->res);
@@ -2141,10 +2158,9 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	if (err)
 		goto err_ports_init;
 
-	if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG) &&
-	    MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) {
-		alloc_size = sizeof(*mlxsw_core->lag.mapping) *
-			MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG) *
+	err = mlxsw_core_max_lag(mlxsw_core, &max_lag);
+	if (!err && MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) {
+		alloc_size = sizeof(*mlxsw_core->lag.mapping) * max_lag *
 			MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS);
 		mlxsw_core->lag.mapping = kzalloc(alloc_size, GFP_KERNEL);
 		if (!mlxsw_core->lag.mapping) {
@@ -2233,6 +2249,7 @@ err_ports_init:
 err_register_resources:
 	mlxsw_bus->fini(bus_priv);
 err_bus_init:
+	mlxsw_core_irq_event_handler_fini(mlxsw_core);
 	if (!reload) {
 		devl_unlock(devlink);
 		devlink_free(devlink);
@@ -2302,6 +2319,7 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 	if (!reload)
 		devl_resources_unregister(devlink);
 	mlxsw_core->bus->fini(mlxsw_core->bus_priv);
+	mlxsw_core_irq_event_handler_fini(mlxsw_core);
 	if (!reload) {
 		devl_unlock(devlink);
 		devlink_free(devlink);
@@ -2772,6 +2790,57 @@ int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list)
 }
 EXPORT_SYMBOL(mlxsw_reg_trans_bulk_wait);
 
+struct mlxsw_core_irq_event_handler_item {
+	struct list_head list;
+	void (*cb)(struct mlxsw_core *mlxsw_core);
+};
+
+int mlxsw_core_irq_event_handler_register(struct mlxsw_core *mlxsw_core,
+					  mlxsw_irq_event_cb_t cb)
+{
+	struct mlxsw_core_irq_event_handler_item *item;
+
+	item = kzalloc(sizeof(*item), GFP_KERNEL);
+	if (!item)
+		return -ENOMEM;
+	item->cb = cb;
+	mutex_lock(&mlxsw_core->irq_event_handler_lock);
+	list_add_tail(&item->list, &mlxsw_core->irq_event_handler_list);
+	mutex_unlock(&mlxsw_core->irq_event_handler_lock);
+	return 0;
+}
+EXPORT_SYMBOL(mlxsw_core_irq_event_handler_register);
+
+void mlxsw_core_irq_event_handler_unregister(struct mlxsw_core *mlxsw_core,
+					     mlxsw_irq_event_cb_t cb)
+{
+	struct mlxsw_core_irq_event_handler_item *item, *tmp;
+
+	mutex_lock(&mlxsw_core->irq_event_handler_lock);
+	list_for_each_entry_safe(item, tmp,
+				 &mlxsw_core->irq_event_handler_list, list) {
+		if (item->cb == cb) {
+			list_del(&item->list);
+			kfree(item);
+		}
+	}
+	mutex_unlock(&mlxsw_core->irq_event_handler_lock);
+}
+EXPORT_SYMBOL(mlxsw_core_irq_event_handler_unregister);
+
+void mlxsw_core_irq_event_handlers_call(struct mlxsw_core *mlxsw_core)
+{
+	struct mlxsw_core_irq_event_handler_item *item;
+
+	mutex_lock(&mlxsw_core->irq_event_handler_lock);
+	list_for_each_entry(item, &mlxsw_core->irq_event_handler_list, list) {
+		if (item->cb)
+			item->cb(mlxsw_core);
+	}
+	mutex_unlock(&mlxsw_core->irq_event_handler_lock);
+}
+EXPORT_SYMBOL(mlxsw_core_irq_event_handlers_call);
+
 static int mlxsw_core_reg_access_cmd(struct mlxsw_core *mlxsw_core,
 				     const struct mlxsw_reg_info *reg,
 				     char *payload,
@@ -3115,18 +3184,6 @@ void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u16 local_port,
 }
 EXPORT_SYMBOL(mlxsw_core_port_eth_set);
 
-void mlxsw_core_port_ib_set(struct mlxsw_core *mlxsw_core, u16 local_port,
-			    void *port_driver_priv)
-{
-	struct mlxsw_core_port *mlxsw_core_port =
-					&mlxsw_core->ports[local_port];
-	struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port;
-
-	mlxsw_core_port->port_driver_priv = port_driver_priv;
-	devlink_port_type_ib_set(devlink_port, NULL);
-}
-EXPORT_SYMBOL(mlxsw_core_port_ib_set);
-
 void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u16 local_port,
 			   void *port_driver_priv)
 {
@@ -3139,18 +3196,6 @@ void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u16 local_port,
 }
 EXPORT_SYMBOL(mlxsw_core_port_clear);
 
-enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core,
-						u16 local_port)
-{
-	struct mlxsw_core_port *mlxsw_core_port =
-					&mlxsw_core->ports[local_port];
-	struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port;
-
-	return devlink_port->type;
-}
-EXPORT_SYMBOL(mlxsw_core_port_type_get);
-
-
 struct devlink_port *
 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
 				 u16 local_port)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index 02d9cc2ef0c8..ca0c3d2bee6b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -35,6 +35,8 @@ struct mlxsw_fw_rev;
 
 unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core);
 
+int mlxsw_core_max_lag(struct mlxsw_core *mlxsw_core, u16 *p_max_lag);
+
 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core);
 
 struct mlxsw_linecards *mlxsw_core_linecards(struct mlxsw_core *mlxsw_core);
@@ -215,6 +217,14 @@ int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core,
 			  mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv);
 int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list);
 
+typedef void mlxsw_irq_event_cb_t(struct mlxsw_core *mlxsw_core);
+
+int mlxsw_core_irq_event_handler_register(struct mlxsw_core *mlxsw_core,
+					  mlxsw_irq_event_cb_t cb);
+void mlxsw_core_irq_event_handler_unregister(struct mlxsw_core *mlxsw_core,
+					     mlxsw_irq_event_cb_t cb);
+void mlxsw_core_irq_event_handlers_call(struct mlxsw_core *mlxsw_core);
+
 int mlxsw_reg_query(struct mlxsw_core *mlxsw_core,
 		    const struct mlxsw_reg_info *reg, char *payload);
 int mlxsw_reg_write(struct mlxsw_core *mlxsw_core,
@@ -256,12 +266,8 @@ int mlxsw_core_cpu_port_init(struct mlxsw_core *mlxsw_core,
 void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core);
 void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u16 local_port,
 			     void *port_driver_priv, struct net_device *dev);
-void mlxsw_core_port_ib_set(struct mlxsw_core *mlxsw_core, u16 local_port,
-			    void *port_driver_priv);
 void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u16 local_port,
 			   void *port_driver_priv);
-enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core,
-						u16 local_port);
 struct devlink_port *
 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
 				 u16 local_port);
@@ -291,6 +297,7 @@ struct mlxsw_swid_config {
 
 struct mlxsw_config_profile {
 	u16	used_max_vepa_channels:1,
+		used_max_lag:1,
 		used_max_mid:1,
 		used_max_pgt:1,
 		used_max_system_port:1,
@@ -306,6 +313,7 @@ struct mlxsw_config_profile {
 		used_kvd_sizes:1,
 		used_cqe_time_stamp_type:1;
 	u8	max_vepa_channels;
+	u16	max_lag;
 	u16	max_mid;
 	u16	max_pgt;
 	u16	max_system_port;
@@ -341,8 +349,6 @@ struct mlxsw_driver {
 		    const struct mlxsw_bus_info *mlxsw_bus_info,
 		    struct netlink_ext_ack *extack);
 	void (*fini)(struct mlxsw_core *mlxsw_core);
-	int (*port_type_set)(struct mlxsw_core *mlxsw_core, u16 local_port,
-			     enum devlink_port_type new_type);
 	int (*port_split)(struct mlxsw_core *mlxsw_core, u16 local_port,
 			  unsigned int count, struct netlink_ext_ack *extack);
 	int (*port_unsplit)(struct mlxsw_core *mlxsw_core, u16 local_port,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
index 636db9a87457..9dfe7148199f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
@@ -737,8 +737,9 @@ mlxsw_afa_cookie_create(struct mlxsw_afa *mlxsw_afa,
 	if (!cookie)
 		return ERR_PTR(-ENOMEM);
 	refcount_set(&cookie->ref_count, 1);
-	memcpy(&cookie->fa_cookie, fa_cookie,
-	       sizeof(*fa_cookie) + fa_cookie->cookie_len);
+	cookie->fa_cookie = *fa_cookie;
+	memcpy(cookie->fa_cookie.cookie, fa_cookie->cookie,
+	       fa_cookie->cookie_len);
 
 	err = rhashtable_insert_fast(&mlxsw_afa->cookie_ht, &cookie->ht_node,
 				     mlxsw_afa_cookie_ht_params);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_linecards.c b/drivers/net/ethernet/mellanox/mlxsw/core_linecards.c
index ca59f0b946da..83d2dc91ba2c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_linecards.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_linecards.c
@@ -785,6 +785,21 @@ static int mlxsw_linecard_status_get_and_process(struct mlxsw_core *mlxsw_core,
 	return mlxsw_linecard_status_process(linecards, linecard, mddq_pl);
 }
 
+static void mlxsw_linecards_irq_event_handler(struct mlxsw_core *mlxsw_core)
+{
+	struct mlxsw_linecards *linecards = mlxsw_core_linecards(mlxsw_core);
+	int i;
+
+	/* Handle change of line card active state. */
+	for (i = 0; i < linecards->count; i++) {
+		struct mlxsw_linecard *linecard = mlxsw_linecard_get(linecards,
+								     i + 1);
+
+		mlxsw_linecard_status_get_and_process(mlxsw_core, linecards,
+						      linecard);
+	}
+}
+
 static const char * const mlxsw_linecard_status_event_type_name[] = {
 	[MLXSW_LINECARD_STATUS_EVENT_TYPE_PROVISION] = "provision",
 	[MLXSW_LINECARD_STATUS_EVENT_TYPE_UNPROVISION] = "unprovision",
@@ -1238,7 +1253,6 @@ static int mlxsw_linecard_init(struct mlxsw_core *mlxsw_core,
 {
 	struct devlink_linecard *devlink_linecard;
 	struct mlxsw_linecard *linecard;
-	int err;
 
 	linecard = mlxsw_linecard_get(linecards, slot_index);
 	linecard->slot_index = slot_index;
@@ -1248,17 +1262,45 @@ static int mlxsw_linecard_init(struct mlxsw_core *mlxsw_core,
 	devlink_linecard = devlink_linecard_create(priv_to_devlink(mlxsw_core),
 						   slot_index, &mlxsw_linecard_ops,
 						   linecard);
-	if (IS_ERR(devlink_linecard)) {
-		err = PTR_ERR(devlink_linecard);
-		goto err_devlink_linecard_create;
-	}
+	if (IS_ERR(devlink_linecard))
+		return PTR_ERR(devlink_linecard);
+
 	linecard->devlink_linecard = devlink_linecard;
 	INIT_DELAYED_WORK(&linecard->status_event_to_dw,
 			  &mlxsw_linecard_status_event_to_work);
 
+	return 0;
+}
+
+static void mlxsw_linecard_fini(struct mlxsw_core *mlxsw_core,
+				struct mlxsw_linecards *linecards,
+				u8 slot_index)
+{
+	struct mlxsw_linecard *linecard;
+
+	linecard = mlxsw_linecard_get(linecards, slot_index);
+	cancel_delayed_work_sync(&linecard->status_event_to_dw);
+	/* Make sure all scheduled events are processed */
+	mlxsw_core_flush_owq();
+	if (linecard->active)
+		mlxsw_linecard_active_clear(linecard);
+	mlxsw_linecard_bdev_del(linecard);
+	devlink_linecard_destroy(linecard->devlink_linecard);
+	mutex_destroy(&linecard->lock);
+}
+
+static int
+mlxsw_linecard_event_delivery_init(struct mlxsw_core *mlxsw_core,
+				   struct mlxsw_linecards *linecards,
+				   u8 slot_index)
+{
+	struct mlxsw_linecard *linecard;
+	int err;
+
+	linecard = mlxsw_linecard_get(linecards, slot_index);
 	err = mlxsw_linecard_event_delivery_set(mlxsw_core, linecard, true);
 	if (err)
-		goto err_event_delivery_set;
+		return err;
 
 	err = mlxsw_linecard_status_get_and_process(mlxsw_core, linecards,
 						    linecard);
@@ -1269,29 +1311,18 @@ static int mlxsw_linecard_init(struct mlxsw_core *mlxsw_core,
 
 err_status_get_and_process:
 	mlxsw_linecard_event_delivery_set(mlxsw_core, linecard, false);
-err_event_delivery_set:
-	devlink_linecard_destroy(linecard->devlink_linecard);
-err_devlink_linecard_create:
-	mutex_destroy(&linecard->lock);
 	return err;
 }
 
-static void mlxsw_linecard_fini(struct mlxsw_core *mlxsw_core,
-				struct mlxsw_linecards *linecards,
-				u8 slot_index)
+static void
+mlxsw_linecard_event_delivery_fini(struct mlxsw_core *mlxsw_core,
+				   struct mlxsw_linecards *linecards,
+				   u8 slot_index)
 {
 	struct mlxsw_linecard *linecard;
 
 	linecard = mlxsw_linecard_get(linecards, slot_index);
 	mlxsw_linecard_event_delivery_set(mlxsw_core, linecard, false);
-	cancel_delayed_work_sync(&linecard->status_event_to_dw);
-	/* Make sure all scheduled events are processed */
-	mlxsw_core_flush_owq();
-	if (linecard->active)
-		mlxsw_linecard_active_clear(linecard);
-	mlxsw_linecard_bdev_del(linecard);
-	devlink_linecard_destroy(linecard->devlink_linecard);
-	mutex_destroy(&linecard->lock);
 }
 
 /*       LINECARDS INI BUNDLE FILE
@@ -1505,6 +1536,11 @@ int mlxsw_linecards_init(struct mlxsw_core *mlxsw_core,
 	if (err)
 		goto err_traps_register;
 
+	err = mlxsw_core_irq_event_handler_register(mlxsw_core,
+						    mlxsw_linecards_irq_event_handler);
+	if (err)
+		goto err_irq_event_handler_register;
+
 	mlxsw_core_linecards_set(mlxsw_core, linecards);
 
 	for (i = 0; i < linecards->count; i++) {
@@ -1513,11 +1549,25 @@ int mlxsw_linecards_init(struct mlxsw_core *mlxsw_core,
 			goto err_linecard_init;
 	}
 
+	for (i = 0; i < linecards->count; i++) {
+		err = mlxsw_linecard_event_delivery_init(mlxsw_core, linecards,
+							 i + 1);
+		if (err)
+			goto err_linecard_event_delivery_init;
+	}
+
 	return 0;
 
+err_linecard_event_delivery_init:
+	for (i--; i >= 0; i--)
+		mlxsw_linecard_event_delivery_fini(mlxsw_core, linecards, i + 1);
+	i = linecards->count;
 err_linecard_init:
 	for (i--; i >= 0; i--)
 		mlxsw_linecard_fini(mlxsw_core, linecards, i + 1);
+	mlxsw_core_irq_event_handler_unregister(mlxsw_core,
+						mlxsw_linecards_irq_event_handler);
+err_irq_event_handler_register:
 	mlxsw_core_traps_unregister(mlxsw_core, mlxsw_linecard_listener,
 				    ARRAY_SIZE(mlxsw_linecard_listener),
 				    mlxsw_core);
@@ -1536,7 +1586,11 @@ void mlxsw_linecards_fini(struct mlxsw_core *mlxsw_core)
 	if (!linecards)
 		return;
 	for (i = 0; i < linecards->count; i++)
+		mlxsw_linecard_event_delivery_fini(mlxsw_core, linecards, i + 1);
+	for (i = 0; i < linecards->count; i++)
 		mlxsw_linecard_fini(mlxsw_core, linecards, i + 1);
+	mlxsw_core_irq_event_handler_unregister(mlxsw_core,
+						mlxsw_linecards_irq_event_handler);
 	mlxsw_core_traps_unregister(mlxsw_core, mlxsw_linecard_listener,
 				    ARRAY_SIZE(mlxsw_linecard_listener),
 				    mlxsw_core);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index ce843ea91464..716c73e4fd59 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -9,6 +9,7 @@
 #include <linux/mutex.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/platform_data/mlxreg.h>
 #include <linux/slab.h>
 
 #include "cmd.h"
@@ -51,6 +52,15 @@
 #define MLXSW_I2C_TIMEOUT_MSECS		5000
 #define MLXSW_I2C_MAX_DATA_SIZE		256
 
+/* Driver can be initialized by kernel platform driver or from the user
+ * space. In the first case IRQ line number is passed through the platform
+ * data, otherwise default IRQ line is to be used. Default IRQ is relevant
+ * only for specific I2C slave address, allowing 3.4 MHz I2C path to the chip
+ * (special hardware feature for I2C acceleration).
+ */
+#define MLXSW_I2C_DEFAULT_IRQ		17
+#define MLXSW_FAST_I2C_SLAVE		0x37
+
 /**
  * struct mlxsw_i2c - device private data:
  * @cmd: command attributes;
@@ -63,6 +73,9 @@
  * @core: switch core pointer;
  * @bus_info: bus info block;
  * @block_size: maximum block size allowed to pass to under layer;
+ * @pdata: device platform data;
+ * @irq_work: interrupts work item;
+ * @irq: IRQ line number;
  */
 struct mlxsw_i2c {
 	struct {
@@ -76,6 +89,9 @@ struct mlxsw_i2c {
 	struct mlxsw_core *core;
 	struct mlxsw_bus_info bus_info;
 	u16 block_size;
+	struct mlxreg_core_hotplug_platform_data *pdata;
+	struct work_struct irq_work;
+	int irq;
 };
 
 #define MLXSW_I2C_READ_MSG(_client, _addr_buf, _buf, _len) {	\
@@ -546,6 +562,67 @@ static void mlxsw_i2c_fini(void *bus_priv)
 	mlxsw_i2c->core = NULL;
 }
 
+static void mlxsw_i2c_work_handler(struct work_struct *work)
+{
+	struct mlxsw_i2c *mlxsw_i2c;
+
+	mlxsw_i2c = container_of(work, struct mlxsw_i2c, irq_work);
+	mlxsw_core_irq_event_handlers_call(mlxsw_i2c->core);
+}
+
+static irqreturn_t mlxsw_i2c_irq_handler(int irq, void *dev)
+{
+	struct mlxsw_i2c *mlxsw_i2c = dev;
+
+	mlxsw_core_schedule_work(&mlxsw_i2c->irq_work);
+
+	/* Interrupt handler shares IRQ line with 'main' interrupt handler.
+	 * Return here IRQ_NONE, while main handler will return IRQ_HANDLED.
+	 */
+	return IRQ_NONE;
+}
+
+static int mlxsw_i2c_irq_init(struct mlxsw_i2c *mlxsw_i2c, u8 addr)
+{
+	int err;
+
+	/* Initialize interrupt handler if system hotplug driver is reachable,
+	 * otherwise interrupt line is not enabled and interrupts will not be
+	 * raised to CPU. Also request_irq() call will be not valid.
+	 */
+	if (!IS_REACHABLE(CONFIG_MLXREG_HOTPLUG))
+		return 0;
+
+	/* Set default interrupt line. */
+	if (mlxsw_i2c->pdata && mlxsw_i2c->pdata->irq)
+		mlxsw_i2c->irq = mlxsw_i2c->pdata->irq;
+	else if (addr == MLXSW_FAST_I2C_SLAVE)
+		mlxsw_i2c->irq = MLXSW_I2C_DEFAULT_IRQ;
+
+	if (!mlxsw_i2c->irq)
+		return 0;
+
+	INIT_WORK(&mlxsw_i2c->irq_work, mlxsw_i2c_work_handler);
+	err = request_irq(mlxsw_i2c->irq, mlxsw_i2c_irq_handler,
+			  IRQF_TRIGGER_FALLING | IRQF_SHARED, "mlxsw-i2c",
+			  mlxsw_i2c);
+	if (err) {
+		dev_err(mlxsw_i2c->bus_info.dev, "Failed to request irq: %d\n",
+			err);
+		return err;
+	}
+
+	return 0;
+}
+
+static void mlxsw_i2c_irq_fini(struct mlxsw_i2c *mlxsw_i2c)
+{
+	if (!IS_REACHABLE(CONFIG_MLXREG_HOTPLUG) || !mlxsw_i2c->irq)
+		return;
+	cancel_work_sync(&mlxsw_i2c->irq_work);
+	free_irq(mlxsw_i2c->irq, mlxsw_i2c);
+}
+
 static const struct mlxsw_bus mlxsw_i2c_bus = {
 	.kind			= "i2c",
 	.init			= mlxsw_i2c_init,
@@ -638,17 +715,24 @@ static int mlxsw_i2c_probe(struct i2c_client *client,
 	mlxsw_i2c->bus_info.dev = &client->dev;
 	mlxsw_i2c->bus_info.low_frequency = true;
 	mlxsw_i2c->dev = &client->dev;
+	mlxsw_i2c->pdata = client->dev.platform_data;
+
+	err = mlxsw_i2c_irq_init(mlxsw_i2c, client->addr);
+	if (err)
+		goto errout;
 
 	err = mlxsw_core_bus_device_register(&mlxsw_i2c->bus_info,
 					     &mlxsw_i2c_bus, mlxsw_i2c, false,
 					     NULL, NULL);
 	if (err) {
 		dev_err(&client->dev, "Fail to register core bus\n");
-		return err;
+		goto err_bus_device_register;
 	}
 
 	return 0;
 
+err_bus_device_register:
+	mlxsw_i2c_irq_fini(mlxsw_i2c);
 errout:
 	mutex_destroy(&mlxsw_i2c->cmd.lock);
 	i2c_set_clientdata(client, NULL);
@@ -661,6 +745,7 @@ static int mlxsw_i2c_remove(struct i2c_client *client)
 	struct mlxsw_i2c *mlxsw_i2c = i2c_get_clientdata(client);
 
 	mlxsw_core_bus_device_unregister(mlxsw_i2c->core, false);
+	mlxsw_i2c_irq_fini(mlxsw_i2c);
 	mutex_destroy(&mlxsw_i2c->cmd.lock);
 
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index bb1cd4bae82e..55b3c42bb007 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -26,20 +26,29 @@ static const struct mlxsw_fw_rev mlxsw_m_fw_rev = {
 
 struct mlxsw_m_port;
 
+struct mlxsw_m_line_card {
+	bool active;
+	int module_to_port[];
+};
+
 struct mlxsw_m {
 	struct mlxsw_m_port **ports;
-	int *module_to_port;
 	struct mlxsw_core *core;
 	const struct mlxsw_bus_info *bus_info;
 	u8 base_mac[ETH_ALEN];
 	u8 max_ports;
+	u8 max_modules_per_slot; /* Maximum number of modules per-slot. */
+	u8 num_of_slots; /* Including the main board. */
+	struct mlxsw_m_line_card **line_cards;
 };
 
 struct mlxsw_m_port {
 	struct net_device *dev;
 	struct mlxsw_m *mlxsw_m;
 	u16 local_port;
+	u8 slot_index;
 	u8 module;
+	u8 module_offset;
 };
 
 static int mlxsw_m_base_mac_get(struct mlxsw_m *mlxsw_m)
@@ -94,14 +103,14 @@ static void mlxsw_m_module_get_drvinfo(struct net_device *dev,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
 	struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
 
-	strlcpy(drvinfo->driver, mlxsw_m->bus_info->device_kind,
+	strscpy(drvinfo->driver, mlxsw_m->bus_info->device_kind,
 		sizeof(drvinfo->driver));
 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 		 "%d.%d.%d",
 		 mlxsw_m->bus_info->fw_rev.major,
 		 mlxsw_m->bus_info->fw_rev.minor,
 		 mlxsw_m->bus_info->fw_rev.subminor);
-	strlcpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name,
+	strscpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name,
 		sizeof(drvinfo->bus_info));
 }
 
@@ -111,8 +120,9 @@ static int mlxsw_m_get_module_info(struct net_device *netdev,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_get_module_info(netdev, core, 0, mlxsw_m_port->module,
-					 modinfo);
+	return mlxsw_env_get_module_info(netdev, core,
+					 mlxsw_m_port->slot_index,
+					 mlxsw_m_port->module, modinfo);
 }
 
 static int
@@ -122,7 +132,8 @@ mlxsw_m_get_module_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_get_module_eeprom(netdev, core, 0,
+	return mlxsw_env_get_module_eeprom(netdev, core,
+					   mlxsw_m_port->slot_index,
 					   mlxsw_m_port->module, ee, data);
 }
 
@@ -134,7 +145,8 @@ mlxsw_m_get_module_eeprom_by_page(struct net_device *netdev,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_get_module_eeprom_by_page(core, 0,
+	return mlxsw_env_get_module_eeprom_by_page(core,
+						   mlxsw_m_port->slot_index,
 						   mlxsw_m_port->module,
 						   page, extack);
 }
@@ -144,7 +156,8 @@ static int mlxsw_m_reset(struct net_device *netdev, u32 *flags)
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_reset_module(netdev, core, 0, mlxsw_m_port->module,
+	return mlxsw_env_reset_module(netdev, core, mlxsw_m_port->slot_index,
+				      mlxsw_m_port->module,
 				      flags);
 }
 
@@ -156,7 +169,8 @@ mlxsw_m_get_module_power_mode(struct net_device *netdev,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_get_module_power_mode(core, 0, mlxsw_m_port->module,
+	return mlxsw_env_get_module_power_mode(core, mlxsw_m_port->slot_index,
+					       mlxsw_m_port->module,
 					       params, extack);
 }
 
@@ -168,7 +182,8 @@ mlxsw_m_set_module_power_mode(struct net_device *netdev,
 	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
 	struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
 
-	return mlxsw_env_set_module_power_mode(core, 0, mlxsw_m_port->module,
+	return mlxsw_env_set_module_power_mode(core, mlxsw_m_port->slot_index,
+					       mlxsw_m_port->module,
 					       params->policy, extack);
 }
 
@@ -184,7 +199,7 @@ static const struct ethtool_ops mlxsw_m_port_ethtool_ops = {
 
 static int
 mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port,
-			     u8 *p_module, u8 *p_width)
+			     u8 *p_module, u8 *p_width, u8 *p_slot_index)
 {
 	char pmlp_pl[MLXSW_REG_PMLP_LEN];
 	int err;
@@ -195,6 +210,7 @@ mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port,
 		return err;
 	*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
 	*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
+	*p_slot_index = mlxsw_reg_pmlp_slot_index_get(pmlp_pl, 0);
 
 	return 0;
 }
@@ -212,18 +228,25 @@ mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port)
 	if (err)
 		return err;
 	mlxsw_reg_ppad_mac_memcpy_from(ppad_pl, addr);
-	eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1);
+	eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1 +
+			mlxsw_m_port->module_offset);
 	return 0;
 }
 
+static bool mlxsw_m_port_created(struct mlxsw_m *mlxsw_m, u16 local_port)
+{
+	return mlxsw_m->ports[local_port];
+}
+
 static int
-mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 module)
+mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index,
+		    u8 module)
 {
 	struct mlxsw_m_port *mlxsw_m_port;
 	struct net_device *dev;
 	int err;
 
-	err = mlxsw_core_port_init(mlxsw_m->core, local_port, 0,
+	err = mlxsw_core_port_init(mlxsw_m->core, local_port, slot_index,
 				   module + 1, false, 0, false,
 				   0, mlxsw_m->base_mac,
 				   sizeof(mlxsw_m->base_mac));
@@ -246,6 +269,15 @@ mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 module)
 	mlxsw_m_port->mlxsw_m = mlxsw_m;
 	mlxsw_m_port->local_port = local_port;
 	mlxsw_m_port->module = module;
+	mlxsw_m_port->slot_index = slot_index;
+	/* Add module offset for line card. Offset for main board iz zero.
+	 * For line card in slot #n offset is calculated as (#n - 1)
+	 * multiplied by maximum modules number, which could be found on a line
+	 * card.
+	 */
+	mlxsw_m_port->module_offset = mlxsw_m_port->slot_index ?
+				      (mlxsw_m_port->slot_index - 1) *
+				      mlxsw_m->max_modules_per_slot : 0;
 
 	dev->netdev_ops = &mlxsw_m_port_netdev_ops;
 	dev->ethtool_ops = &mlxsw_m_port_ethtool_ops;
@@ -291,19 +323,29 @@ static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port)
 	mlxsw_core_port_fini(mlxsw_m->core, local_port);
 }
 
+static int*
+mlxsw_m_port_mapping_get(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module)
+{
+	return &mlxsw_m->line_cards[slot_index]->module_to_port[module];
+}
+
 static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port,
 				   u8 *last_module)
 {
 	unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
-	u8 module, width;
+	u8 module, width, slot_index;
+	int *module_to_port;
 	int err;
 
 	/* Fill out to local port mapping array */
 	err = mlxsw_m_port_module_info_get(mlxsw_m, local_port, &module,
-					   &width);
+					   &width, &slot_index);
 	if (err)
 		return err;
 
+	/* Skip if line card has been already configured */
+	if (mlxsw_m->line_cards[slot_index]->active)
+		return 0;
 	if (!width)
 		return 0;
 	/* Skip, if port belongs to the cluster */
@@ -313,91 +355,220 @@ static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port,
 
 	if (WARN_ON_ONCE(module >= max_ports))
 		return -EINVAL;
-	mlxsw_env_module_port_map(mlxsw_m->core, 0, module);
-	mlxsw_m->module_to_port[module] = ++mlxsw_m->max_ports;
+	mlxsw_env_module_port_map(mlxsw_m->core, slot_index, module);
+	module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, module);
+	*module_to_port = local_port;
 
 	return 0;
 }
 
-static void mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 module)
+static void
+mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module)
 {
-	mlxsw_m->module_to_port[module] = -1;
-	mlxsw_env_module_port_unmap(mlxsw_m->core, 0, module);
+	int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index,
+						       module);
+	*module_to_port = -1;
+	mlxsw_env_module_port_unmap(mlxsw_m->core, slot_index, module);
 }
 
-static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
+static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m)
 {
 	unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
-	u8 last_module = max_ports;
-	int i;
-	int err;
+	char mgpir_pl[MLXSW_REG_MGPIR_LEN];
+	u8 num_of_modules;
+	int i, j, err;
+
+	mlxsw_reg_mgpir_pack(mgpir_pl, 0);
+	err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mgpir), mgpir_pl);
+	if (err)
+		return err;
+
+	mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, &num_of_modules,
+			       &mlxsw_m->num_of_slots);
+	/* If the system is modular, get the maximum number of modules per-slot.
+	 * Otherwise, get the maximum number of modules on the main board.
+	 */
+	if (mlxsw_m->num_of_slots)
+		mlxsw_m->max_modules_per_slot =
+			mlxsw_reg_mgpir_max_modules_per_slot_get(mgpir_pl);
+	else
+		mlxsw_m->max_modules_per_slot = num_of_modules;
+	/* Add slot for main board. */
+	mlxsw_m->num_of_slots += 1;
 
 	mlxsw_m->ports = kcalloc(max_ports, sizeof(*mlxsw_m->ports),
 				 GFP_KERNEL);
 	if (!mlxsw_m->ports)
 		return -ENOMEM;
 
-	mlxsw_m->module_to_port = kmalloc_array(max_ports, sizeof(int),
-						GFP_KERNEL);
-	if (!mlxsw_m->module_to_port) {
+	mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots,
+				      sizeof(*mlxsw_m->line_cards),
+				      GFP_KERNEL);
+	if (!mlxsw_m->line_cards) {
 		err = -ENOMEM;
-		goto err_module_to_port_alloc;
+		goto err_kcalloc;
 	}
 
-	/* Invalidate the entries of module to local port mapping array */
-	for (i = 0; i < max_ports; i++)
-		mlxsw_m->module_to_port[i] = -1;
+	for (i = 0; i < mlxsw_m->num_of_slots; i++) {
+		mlxsw_m->line_cards[i] =
+			kzalloc(struct_size(mlxsw_m->line_cards[i],
+					    module_to_port,
+					    mlxsw_m->max_modules_per_slot),
+				GFP_KERNEL);
+		if (!mlxsw_m->line_cards[i]) {
+			err = -ENOMEM;
+			goto err_kmalloc_array;
+		}
 
-	/* Fill out module to local port mapping array */
-	for (i = 1; i < max_ports; i++) {
-		err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module);
-		if (err)
-			goto err_module_to_port_map;
+		/* Invalidate the entries of module to local port mapping array. */
+		for (j = 0; j < mlxsw_m->max_modules_per_slot; j++)
+			mlxsw_m->line_cards[i]->module_to_port[j] = -1;
 	}
 
-	/* Create port objects for each valid entry */
-	for (i = 0; i < mlxsw_m->max_ports; i++) {
-		if (mlxsw_m->module_to_port[i] > 0) {
-			err = mlxsw_m_port_create(mlxsw_m,
-						  mlxsw_m->module_to_port[i],
-						  i);
+	return 0;
+
+err_kmalloc_array:
+	for (i--; i >= 0; i--)
+		kfree(mlxsw_m->line_cards[i]);
+err_kcalloc:
+	kfree(mlxsw_m->ports);
+	return err;
+}
+
+static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m)
+{
+	int i = mlxsw_m->num_of_slots;
+
+	for (i--; i >= 0; i--)
+		kfree(mlxsw_m->line_cards[i]);
+	kfree(mlxsw_m->line_cards);
+	kfree(mlxsw_m->ports);
+}
+
+static void
+mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index)
+{
+	int i;
+
+	for (i = mlxsw_m->max_modules_per_slot - 1; i >= 0; i--) {
+		int *module_to_port;
+
+		module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+		if (*module_to_port > 0)
+			mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i);
+	}
+}
+
+static int
+mlxsw_m_linecard_ports_create(struct mlxsw_m *mlxsw_m, u8 slot_index)
+{
+	int *module_to_port;
+	int i, err;
+
+	for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) {
+		module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+		if (*module_to_port > 0) {
+			err = mlxsw_m_port_create(mlxsw_m, *module_to_port,
+						  slot_index, i);
 			if (err)
-				goto err_module_to_port_create;
+				goto err_port_create;
+			/* Mark slot as active */
+			if (!mlxsw_m->line_cards[slot_index]->active)
+				mlxsw_m->line_cards[slot_index]->active = true;
 		}
 	}
-
 	return 0;
 
-err_module_to_port_create:
+err_port_create:
 	for (i--; i >= 0; i--) {
-		if (mlxsw_m->module_to_port[i] > 0)
-			mlxsw_m_port_remove(mlxsw_m,
-					    mlxsw_m->module_to_port[i]);
+		module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+		if (*module_to_port > 0 &&
+		    mlxsw_m_port_created(mlxsw_m, *module_to_port)) {
+			mlxsw_m_port_remove(mlxsw_m, *module_to_port);
+			/* Mark slot as inactive */
+			if (mlxsw_m->line_cards[slot_index]->active)
+				mlxsw_m->line_cards[slot_index]->active = false;
+		}
 	}
-	i = max_ports;
-err_module_to_port_map:
-	for (i--; i > 0; i--)
-		mlxsw_m_port_module_unmap(mlxsw_m, i);
-	kfree(mlxsw_m->module_to_port);
-err_module_to_port_alloc:
-	kfree(mlxsw_m->ports);
 	return err;
 }
 
-static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
+static void
+mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index)
 {
 	int i;
 
-	for (i = 0; i < mlxsw_m->max_ports; i++) {
-		if (mlxsw_m->module_to_port[i] > 0) {
-			mlxsw_m_port_remove(mlxsw_m,
-					    mlxsw_m->module_to_port[i]);
-			mlxsw_m_port_module_unmap(mlxsw_m, i);
+	for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) {
+		int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m,
+							       slot_index, i);
+
+		if (*module_to_port > 0 &&
+		    mlxsw_m_port_created(mlxsw_m, *module_to_port)) {
+			mlxsw_m_port_remove(mlxsw_m, *module_to_port);
+			mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i);
 		}
 	}
+}
 
-	kfree(mlxsw_m->module_to_port);
-	kfree(mlxsw_m->ports);
+static int mlxsw_m_ports_module_map(struct mlxsw_m *mlxsw_m)
+{
+	unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
+	u8 last_module = max_ports;
+	int i, err;
+
+	for (i = 1; i < max_ports; i++) {
+		err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
+{
+	int err;
+
+	/* Fill out module to local port mapping array */
+	err = mlxsw_m_ports_module_map(mlxsw_m);
+	if (err)
+		goto err_ports_module_map;
+
+	/* Create port objects for each valid entry */
+	err = mlxsw_m_linecard_ports_create(mlxsw_m, 0);
+	if (err)
+		goto err_linecard_ports_create;
+
+	return 0;
+
+err_linecard_ports_create:
+err_ports_module_map:
+	mlxsw_m_linecard_port_module_unmap(mlxsw_m, 0);
+
+	return err;
+}
+
+static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
+{
+	mlxsw_m_linecard_ports_remove(mlxsw_m, 0);
+}
+
+static void
+mlxsw_m_ports_remove_selected(struct mlxsw_core *mlxsw_core,
+			      bool (*selector)(void *priv, u16 local_port),
+			      void *priv)
+{
+	struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
+	struct mlxsw_linecard *linecard_priv = priv;
+	struct mlxsw_m_line_card *linecard;
+
+	linecard = mlxsw_m->line_cards[linecard_priv->slot_index];
+
+	if (WARN_ON(!linecard->active))
+		return;
+
+	mlxsw_m_linecard_ports_remove(mlxsw_m, linecard_priv->slot_index);
+	linecard->active = false;
 }
 
 static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m)
@@ -418,6 +589,60 @@ static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m)
 	return -EINVAL;
 }
 
+static void
+mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv)
+{
+	struct mlxsw_m_line_card *linecard;
+	struct mlxsw_m *mlxsw_m = priv;
+	int err;
+
+	linecard = mlxsw_m->line_cards[slot_index];
+	/* Skip if line card has been already configured during init */
+	if (linecard->active)
+		return;
+
+	/* Fill out module to local port mapping array */
+	err = mlxsw_m_ports_module_map(mlxsw_m);
+	if (err)
+		goto err_ports_module_map;
+
+	/* Create port objects for each valid entry */
+	err = mlxsw_m_linecard_ports_create(mlxsw_m, slot_index);
+	if (err) {
+		dev_err(mlxsw_m->bus_info->dev, "Failed to create port for line card at slot %d\n",
+			slot_index);
+		goto err_linecard_ports_create;
+	}
+
+	linecard->active = true;
+
+	return;
+
+err_linecard_ports_create:
+err_ports_module_map:
+	mlxsw_m_linecard_port_module_unmap(mlxsw_m, slot_index);
+}
+
+static void
+mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv)
+{
+	struct mlxsw_m_line_card *linecard;
+	struct mlxsw_m *mlxsw_m = priv;
+
+	linecard = mlxsw_m->line_cards[slot_index];
+
+	if (WARN_ON(!linecard->active))
+		return;
+
+	mlxsw_m_linecard_ports_remove(mlxsw_m, slot_index);
+	linecard->active = false;
+}
+
+static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = {
+	.got_active = mlxsw_m_got_active,
+	.got_inactive = mlxsw_m_got_inactive,
+};
+
 static int mlxsw_m_init(struct mlxsw_core *mlxsw_core,
 			const struct mlxsw_bus_info *mlxsw_bus_info,
 			struct netlink_ext_ack *extack)
@@ -438,13 +663,33 @@ static int mlxsw_m_init(struct mlxsw_core *mlxsw_core,
 		return err;
 	}
 
+	err = mlxsw_m_linecards_init(mlxsw_m);
+	if (err) {
+		dev_err(mlxsw_m->bus_info->dev, "Failed to create line cards\n");
+		return err;
+	}
+
+	err = mlxsw_linecards_event_ops_register(mlxsw_core,
+						 &mlxsw_m_event_ops, mlxsw_m);
+	if (err) {
+		dev_err(mlxsw_m->bus_info->dev, "Failed to register line cards operations\n");
+		goto linecards_event_ops_register;
+	}
+
 	err = mlxsw_m_ports_create(mlxsw_m);
 	if (err) {
 		dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n");
-		return err;
+		goto err_ports_create;
 	}
 
 	return 0;
+
+err_ports_create:
+	mlxsw_linecards_event_ops_unregister(mlxsw_core,
+					     &mlxsw_m_event_ops, mlxsw_m);
+linecards_event_ops_register:
+	mlxsw_m_linecards_fini(mlxsw_m);
+	return err;
 }
 
 static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core)
@@ -452,6 +697,9 @@ static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core)
 	struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
 
 	mlxsw_m_ports_remove(mlxsw_m);
+	mlxsw_linecards_event_ops_unregister(mlxsw_core,
+					     &mlxsw_m_event_ops, mlxsw_m);
+	mlxsw_m_linecards_fini(mlxsw_m);
 }
 
 static const struct mlxsw_config_profile mlxsw_m_config_profile;
@@ -461,6 +709,7 @@ static struct mlxsw_driver mlxsw_m_driver = {
 	.priv_size		= sizeof(struct mlxsw_m),
 	.init			= mlxsw_m_init,
 	.fini			= mlxsw_m_fini,
+	.ports_remove_selected	= mlxsw_m_ports_remove_selected,
 	.profile		= &mlxsw_m_config_profile,
 };
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 50527adc5b5a..c968309657dd 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -1187,6 +1187,11 @@ static int mlxsw_pci_config_profile(struct mlxsw_pci *mlxsw_pci, char *mbox,
 		mlxsw_cmd_mbox_config_profile_max_vepa_channels_set(
 			mbox, profile->max_vepa_channels);
 	}
+	if (profile->used_max_lag) {
+		mlxsw_cmd_mbox_config_profile_set_max_lag_set(mbox, 1);
+		mlxsw_cmd_mbox_config_profile_max_lag_set(mbox,
+							  profile->max_lag);
+	}
 	if (profile->used_max_mid) {
 		mlxsw_cmd_mbox_config_profile_set_max_mid_set(
 			mbox, 1);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index f27bdecdf952..0777bed5bb1a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -2218,76 +2218,6 @@ static inline void mlxsw_reg_smpe_pack(char *payload, u16 local_port,
 	mlxsw_reg_smpe_evid_set(payload, evid);
 }
 
-/* SFTR-V2 - Switch Flooding Table Version 2 Register
- * --------------------------------------------------
- * The switch flooding table is used for flooding packet replication. The table
- * defines a bit mask of ports for packet replication.
- */
-#define MLXSW_REG_SFTR2_ID 0x202F
-#define MLXSW_REG_SFTR2_LEN 0x120
-
-MLXSW_REG_DEFINE(sftr2, MLXSW_REG_SFTR2_ID, MLXSW_REG_SFTR2_LEN);
-
-/* reg_sftr2_swid
- * Switch partition ID with which to associate the port.
- * Access: Index
- */
-MLXSW_ITEM32(reg, sftr2, swid, 0x00, 24, 8);
-
-/* reg_sftr2_flood_table
- * Flooding table index to associate with the specific type on the specific
- * switch partition.
- * Access: Index
- */
-MLXSW_ITEM32(reg, sftr2, flood_table, 0x00, 16, 6);
-
-/* reg_sftr2_index
- * Index. Used as an index into the Flooding Table in case the table is
- * configured to use VID / FID or FID Offset.
- * Access: Index
- */
-MLXSW_ITEM32(reg, sftr2, index, 0x00, 0, 16);
-
-/* reg_sftr2_table_type
- * See mlxsw_flood_table_type
- * Access: RW
- */
-MLXSW_ITEM32(reg, sftr2, table_type, 0x04, 16, 3);
-
-/* reg_sftr2_range
- * Range of entries to update
- * Access: Index
- */
-MLXSW_ITEM32(reg, sftr2, range, 0x04, 0, 16);
-
-/* reg_sftr2_port
- * Local port membership (1 bit per port).
- * Access: RW
- */
-MLXSW_ITEM_BIT_ARRAY(reg, sftr2, port, 0x20, 0x80, 1);
-
-/* reg_sftr2_port_mask
- * Local port mask (1 bit per port).
- * Access: WO
- */
-MLXSW_ITEM_BIT_ARRAY(reg, sftr2, port_mask, 0xA0, 0x80, 1);
-
-static inline void mlxsw_reg_sftr2_pack(char *payload,
-					unsigned int flood_table,
-					unsigned int index,
-					enum mlxsw_flood_table_type table_type,
-					unsigned int range, u16 port, bool set)
-{
-	MLXSW_REG_ZERO(sftr2, payload);
-	mlxsw_reg_sftr2_swid_set(payload, 0);
-	mlxsw_reg_sftr2_flood_table_set(payload, flood_table);
-	mlxsw_reg_sftr2_index_set(payload, index);
-	mlxsw_reg_sftr2_table_type_set(payload, table_type);
-	mlxsw_reg_sftr2_range_set(payload, range);
-	mlxsw_reg_sftr2_port_set(payload, port, set);
-	mlxsw_reg_sftr2_port_mask_set(payload, port, 1);
-}
-
 /* SMID-V2 - Switch Multicast ID Version 2 Register
  * ------------------------------------------------
  * The MID record maps from a MID (Multicast ID), which is a unique identifier
@@ -4729,25 +4659,6 @@ MLXSW_ITEM32(reg, ptys, ext_eth_proto_cap, 0x08, 0, 32);
  */
 MLXSW_ITEM32(reg, ptys, eth_proto_cap, 0x0C, 0, 32);
 
-/* reg_ptys_ib_link_width_cap
- * IB port supported widths.
- * Access: RO
- */
-MLXSW_ITEM32(reg, ptys, ib_link_width_cap, 0x10, 16, 16);
-
-#define MLXSW_REG_PTYS_IB_SPEED_SDR	BIT(0)
-#define MLXSW_REG_PTYS_IB_SPEED_DDR	BIT(1)
-#define MLXSW_REG_PTYS_IB_SPEED_QDR	BIT(2)
-#define MLXSW_REG_PTYS_IB_SPEED_FDR10	BIT(3)
-#define MLXSW_REG_PTYS_IB_SPEED_FDR	BIT(4)
-#define MLXSW_REG_PTYS_IB_SPEED_EDR	BIT(5)
-
-/* reg_ptys_ib_proto_cap
- * IB port supported speeds and protocols.
- * Access: RO
- */
-MLXSW_ITEM32(reg, ptys, ib_proto_cap, 0x10, 0, 16);
-
 /* reg_ptys_ext_eth_proto_admin
  * Extended speed and protocol to set port to.
  * Access: RW
@@ -4760,18 +4671,6 @@ MLXSW_ITEM32(reg, ptys, ext_eth_proto_admin, 0x14, 0, 32);
  */
 MLXSW_ITEM32(reg, ptys, eth_proto_admin, 0x18, 0, 32);
 
-/* reg_ptys_ib_link_width_admin
- * IB width to set port to.
- * Access: RW
- */
-MLXSW_ITEM32(reg, ptys, ib_link_width_admin, 0x1C, 16, 16);
-
-/* reg_ptys_ib_proto_admin
- * IB speeds and protocols to set port to.
- * Access: RW
- */
-MLXSW_ITEM32(reg, ptys, ib_proto_admin, 0x1C, 0, 16);
-
 /* reg_ptys_ext_eth_proto_oper
  * The extended current speed and protocol configured for the port.
  * Access: RO
@@ -4784,18 +4683,6 @@ MLXSW_ITEM32(reg, ptys, ext_eth_proto_oper, 0x20, 0, 32);
  */
 MLXSW_ITEM32(reg, ptys, eth_proto_oper, 0x24, 0, 32);
 
-/* reg_ptys_ib_link_width_oper
- * The current IB width to set port to.
- * Access: RO
- */
-MLXSW_ITEM32(reg, ptys, ib_link_width_oper, 0x28, 16, 16);
-
-/* reg_ptys_ib_proto_oper
- * The current IB speed and protocol.
- * Access: RO
- */
-MLXSW_ITEM32(reg, ptys, ib_proto_oper, 0x28, 0, 16);
-
 enum mlxsw_reg_ptys_connector_type {
 	MLXSW_REG_PTYS_CONNECTOR_TYPE_UNKNOWN_OR_NO_CONNECTOR,
 	MLXSW_REG_PTYS_CONNECTOR_TYPE_PORT_NONE,
@@ -4866,33 +4753,6 @@ static inline void mlxsw_reg_ptys_ext_eth_unpack(char *payload,
 			mlxsw_reg_ptys_ext_eth_proto_oper_get(payload);
 }
 
-static inline void mlxsw_reg_ptys_ib_pack(char *payload, u16 local_port,
-					  u16 proto_admin, u16 link_width)
-{
-	MLXSW_REG_ZERO(ptys, payload);
-	mlxsw_reg_ptys_local_port_set(payload, local_port);
-	mlxsw_reg_ptys_proto_mask_set(payload, MLXSW_REG_PTYS_PROTO_MASK_IB);
-	mlxsw_reg_ptys_ib_proto_admin_set(payload, proto_admin);
-	mlxsw_reg_ptys_ib_link_width_admin_set(payload, link_width);
-}
-
-static inline void mlxsw_reg_ptys_ib_unpack(char *payload, u16 *p_ib_proto_cap,
-					    u16 *p_ib_link_width_cap,
-					    u16 *p_ib_proto_oper,
-					    u16 *p_ib_link_width_oper)
-{
-	if (p_ib_proto_cap)
-		*p_ib_proto_cap = mlxsw_reg_ptys_ib_proto_cap_get(payload);
-	if (p_ib_link_width_cap)
-		*p_ib_link_width_cap =
-			mlxsw_reg_ptys_ib_link_width_cap_get(payload);
-	if (p_ib_proto_oper)
-		*p_ib_proto_oper = mlxsw_reg_ptys_ib_proto_oper_get(payload);
-	if (p_ib_link_width_oper)
-		*p_ib_link_width_oper =
-			mlxsw_reg_ptys_ib_link_width_oper_get(payload);
-}
-
 /* PPAD - Port Physical Address Register
  * -------------------------------------
  * The PPAD register configures the per port physical MAC address.
@@ -5666,27 +5526,6 @@ static inline void mlxsw_reg_ppcnt_pack(char *payload, u16 local_port,
 	mlxsw_reg_ppcnt_prio_tc_set(payload, prio_tc);
 }
 
-/* PLIB - Port Local to InfiniBand Port
- * ------------------------------------
- * The PLIB register performs mapping from Local Port into InfiniBand Port.
- */
-#define MLXSW_REG_PLIB_ID 0x500A
-#define MLXSW_REG_PLIB_LEN 0x10
-
-MLXSW_REG_DEFINE(plib, MLXSW_REG_PLIB_ID, MLXSW_REG_PLIB_LEN);
-
-/* reg_plib_local_port
- * Local port number.
- * Access: Index
- */
-MLXSW_ITEM32_LP(reg, plib, 0x00, 16, 0x00, 12);
-
-/* reg_plib_ib_port
- * InfiniBand port remapping for local_port.
- * Access: RW
- */
-MLXSW_ITEM32(reg, plib, ib_port, 0x00, 0, 8);
-
 /* PPTB - Port Prio To Buffer Register
  * -----------------------------------
  * Configures the switch priority to buffer table.
@@ -12924,7 +12763,6 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(spvc),
 	MLXSW_REG(spevet),
 	MLXSW_REG(smpe),
-	MLXSW_REG(sftr2),
 	MLXSW_REG(smid2),
 	MLXSW_REG(cwtp),
 	MLXSW_REG(cwtpm),
@@ -12962,7 +12800,6 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(paos),
 	MLXSW_REG(pfcc),
 	MLXSW_REG(ppcnt),
-	MLXSW_REG(plib),
 	MLXSW_REG(pptb),
 	MLXSW_REG(pbmc),
 	MLXSW_REG(pspa),
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 30c7b0e15721..5bcf5bceff71 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2691,6 +2691,7 @@ static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
 {
 	char slcr_pl[MLXSW_REG_SLCR_LEN];
+	u16 max_lag;
 	u32 seed;
 	int err;
 
@@ -2709,12 +2710,14 @@ static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
 	if (err)
 		return err;
 
-	if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG) ||
-	    !MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG_MEMBERS))
+	err = mlxsw_core_max_lag(mlxsw_sp->core, &max_lag);
+	if (err)
+		return err;
+
+	if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG_MEMBERS))
 		return -EIO;
 
-	mlxsw_sp->lags = kcalloc(MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LAG),
-				 sizeof(struct mlxsw_sp_upper),
+	mlxsw_sp->lags = kcalloc(max_lag, sizeof(struct mlxsw_sp_upper),
 				 GFP_KERNEL);
 	if (!mlxsw_sp->lags)
 		return -ENOMEM;
@@ -3509,6 +3512,33 @@ static const struct mlxsw_config_profile mlxsw_sp2_config_profile = {
 	.cqe_time_stamp_type		= MLXSW_CMD_MBOX_CONFIG_PROFILE_CQE_TIME_STAMP_TYPE_UTC,
 };
 
+/* Reduce number of LAGs from full capacity (256) to the maximum supported LAGs
+ * in Spectrum-2/3, to avoid regression in number of free entries in the PGT
+ * table.
+ */
+#define MLXSW_SP4_CONFIG_PROFILE_MAX_LAG 128
+
+static const struct mlxsw_config_profile mlxsw_sp4_config_profile = {
+	.used_max_lag			= 1,
+	.max_lag			= MLXSW_SP4_CONFIG_PROFILE_MAX_LAG,
+	.used_flood_mode                = 1,
+	.flood_mode                     = MLXSW_CMD_MBOX_CONFIG_PROFILE_FLOOD_MODE_CONTROLLED,
+	.used_max_ib_mc			= 1,
+	.max_ib_mc			= 0,
+	.used_max_pkey			= 1,
+	.max_pkey			= 0,
+	.used_ubridge			= 1,
+	.ubridge			= 1,
+	.swid_config			= {
+		{
+			.used_type	= 1,
+			.type		= MLXSW_PORT_SWID_TYPE_ETH,
+		}
+	},
+	.used_cqe_time_stamp_type	= 1,
+	.cqe_time_stamp_type		= MLXSW_CMD_MBOX_CONFIG_PROFILE_CQE_TIME_STAMP_TYPE_UTC,
+};
+
 static void
 mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core,
 				      struct devlink_resource_size_params *kvd_size_params,
@@ -4039,7 +4069,7 @@ static struct mlxsw_driver mlxsw_sp4_driver = {
 	.params_unregister		= mlxsw_sp2_params_unregister,
 	.ptp_transmitted		= mlxsw_sp_ptp_transmitted,
 	.txhdr_len			= MLXSW_TXHDR_LEN,
-	.profile			= &mlxsw_sp2_config_profile,
+	.profile			= &mlxsw_sp4_config_profile,
 	.sdq_supports_cqe_v2		= true,
 };
 
@@ -4263,10 +4293,13 @@ static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
 {
 	struct mlxsw_sp_upper *lag;
 	int free_lag_id = -1;
-	u64 max_lag;
-	int i;
+	u16 max_lag;
+	int err, i;
+
+	err = mlxsw_core_max_lag(mlxsw_sp->core, &max_lag);
+	if (err)
+		return err;
 
-	max_lag = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LAG);
 	for (i = 0; i < max_lag; i++) {
 		lag = mlxsw_sp_lag_get(mlxsw_sp, i);
 		if (lag->ref_count) {
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
index 915dffb85a1c..dcd79d7e2af4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
@@ -14,16 +14,16 @@ static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
 	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 
-	strlcpy(drvinfo->driver, mlxsw_sp->bus_info->device_kind,
+	strscpy(drvinfo->driver, mlxsw_sp->bus_info->device_kind,
 		sizeof(drvinfo->driver));
-	strlcpy(drvinfo->version, mlxsw_sp_driver_version,
+	strscpy(drvinfo->version, mlxsw_sp_driver_version,
 		sizeof(drvinfo->version));
 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 		 "%d.%d.%d",
 		 mlxsw_sp->bus_info->fw_rev.major,
 		 mlxsw_sp->bus_info->fw_rev.minor,
 		 mlxsw_sp->bus_info->fw_rev.subminor);
-	strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
+	strscpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
 		sizeof(drvinfo->bus_info));
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 2c4443c6b964..48f1fa62a4fd 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -1819,7 +1819,7 @@ void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp,
 /* The configuration where several tunnels have the same local address in the
  * same underlay table needs special treatment in the HW. That is currently not
  * implemented in the driver. This function finds and demotes the first tunnel
- * with a given source address, except the one passed in in the argument
+ * with a given source address, except the one passed in the argument
  * `except'.
  */
 bool