diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index e0066ad..fc8b48a 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -703,7 +703,6 @@
 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
 {
 	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
-	unsigned int port;
 	int ret;
 
 	ret = bcm_sf2_sw_rst(priv);
@@ -715,14 +714,7 @@
 	if (priv->hw_params.num_gphy == 1)
 		bcm_sf2_gphy_enable_set(ds, true);
 
-	for (port = 0; port < DSA_MAX_PORTS; port++) {
-		if (dsa_is_user_port(ds, port))
-			bcm_sf2_port_setup(ds, port, NULL);
-		else if (dsa_is_cpu_port(ds, port))
-			bcm_sf2_imp_setup(ds, port);
-	}
-
-	bcm_sf2_enable_acb(ds);
+	ds->ops->setup(ds);
 
 	return 0;
 }
@@ -1173,10 +1165,10 @@
 {
 	struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
 
-	/* Disable all ports and interrupts */
 	priv->wol_ports_mask = 0;
-	bcm_sf2_sw_suspend(priv->dev->ds);
 	dsa_unregister_switch(priv->dev->ds);
+	/* Disable all ports and interrupts */
+	bcm_sf2_sw_suspend(priv->dev->ds);
 	bcm_sf2_mdio_unregister(priv);
 
 	return 0;
diff --git a/drivers/net/ethernet/amazon/ena/ena_eth_com.c b/drivers/net/ethernet/amazon/ena/ena_eth_com.c
index 1c682b7..2b3ff0c 100644
--- a/drivers/net/ethernet/amazon/ena/ena_eth_com.c
+++ b/drivers/net/ethernet/amazon/ena/ena_eth_com.c
@@ -245,11 +245,11 @@
 		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK) >>
 		ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT;
 	ena_rx_ctx->l3_csum_err =
-		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK) >>
-		ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT;
+		!!((cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT);
 	ena_rx_ctx->l4_csum_err =
-		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK) >>
-		ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT;
+		!!((cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT);
 	ena_rx_ctx->hash = cdesc->hash;
 	ena_rx_ctx->frag =
 		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK) >>
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index 25621a2..d906293 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -1575,8 +1575,6 @@
 	if (rc)
 		return rc;
 
-	ena_init_napi(adapter);
-
 	ena_change_mtu(adapter->netdev, adapter->netdev->mtu);
 
 	ena_refill_all_rx_bufs(adapter);
@@ -1730,6 +1728,13 @@
 
 	ena_setup_io_intr(adapter);
 
+	/* napi poll functions should be initialized before running
+	 * request_irq(), to handle a rare condition where there is a pending
+	 * interrupt, causing the ISR to fire immediately while the poll
+	 * function wasn't set yet, causing a null dereference
+	 */
+	ena_init_napi(adapter);
+
 	rc = ena_request_io_irq(adapter);
 	if (rc)
 		goto err_req_irq;
@@ -2619,7 +2624,11 @@
 	ena_free_mgmnt_irq(adapter);
 	ena_disable_msix(adapter);
 err_device_destroy:
+	ena_com_abort_admin_commands(ena_dev);
+	ena_com_wait_for_abort_completion(ena_dev);
 	ena_com_admin_destroy(ena_dev);
+	ena_com_mmio_reg_read_request_destroy(ena_dev);
+	ena_com_dev_reset(ena_dev, ENA_REGS_RESET_DRIVER_INVALID_STATE);
 err:
 	clear_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags);
 	clear_bit(ENA_FLAG_ONGOING_RESET, &adapter->flags);
@@ -3099,15 +3108,8 @@
 
 static void ena_release_bars(struct ena_com_dev *ena_dev, struct pci_dev *pdev)
 {
-	int release_bars;
+	int release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & ENA_BAR_MASK;
 
-	if (ena_dev->mem_bar)
-		devm_iounmap(&pdev->dev, ena_dev->mem_bar);
-
-	if (ena_dev->reg_bar)
-		devm_iounmap(&pdev->dev, ena_dev->reg_bar);
-
-	release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & ENA_BAR_MASK;
 	pci_release_selected_regions(pdev, release_bars);
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d2d5944..6a04603 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -260,47 +260,34 @@
 			     NULL, NULL, NULL),
 };
 
-static void mlx4_devlink_set_init_value(struct devlink *devlink, u32 param_id,
-					union devlink_param_value init_val)
-{
-	struct mlx4_priv *priv = devlink_priv(devlink);
-	struct mlx4_dev *dev = &priv->dev;
-	int err;
-
-	err = devlink_param_driverinit_value_set(devlink, param_id, init_val);
-	if (err)
-		mlx4_warn(dev,
-			  "devlink set parameter %u value failed (err = %d)",
-			  param_id, err);
-}
-
 static void mlx4_devlink_set_params_init_values(struct devlink *devlink)
 {
 	union devlink_param_value value;
 
 	value.vbool = !!mlx4_internal_err_reset;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
+					   value);
 
 	value.vu32 = 1UL << log_num_mac;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_MAX_MACS, value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
+					   value);
 
 	value.vbool = enable_64b_cqe_eqe;
-	mlx4_devlink_set_init_value(devlink,
-				    MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
+					   value);
 
 	value.vbool = enable_4k_uar;
-	mlx4_devlink_set_init_value(devlink,
-				    MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
+					   value);
 
 	value.vbool = false;
-	mlx4_devlink_set_init_value(devlink,
-				    DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
-				    value);
+	devlink_param_driverinit_value_set(devlink,
+					   DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
+					   value);
 }
 
 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev,
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 9a5e296..3a5e616 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -4282,8 +4282,8 @@
 		RTL_W32(tp, RxConfig, RX_FIFO_THRESH | RX_DMA_BURST);
 		break;
 	case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_24:
-	case RTL_GIGA_MAC_VER_34:
-	case RTL_GIGA_MAC_VER_35:
+	case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_36:
+	case RTL_GIGA_MAC_VER_38:
 		RTL_W32(tp, RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
 		break;
 	case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51:
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index 7aa5ebb..4289ccb 100644
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -735,8 +735,11 @@
 		u16 idx = dring->tail;
 		struct netsec_de *de = dring->vaddr + (DESC_SZ * idx);
 
-		if (de->attr & (1U << NETSEC_RX_PKT_OWN_FIELD))
+		if (de->attr & (1U << NETSEC_RX_PKT_OWN_FIELD)) {
+			/* reading the register clears the irq */
+			netsec_read(priv, NETSEC_REG_NRM_RX_PKTCNT);
 			break;
+		}
 
 		/* This  barrier is needed to keep us from reading
 		 * any other fields out of the netsec_de until we have
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 6e13b88..fd8bb99 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -163,8 +163,6 @@
 /* Give this long for the PHY to reset. */
 #define T_PHY_RESET_MS	50
 
-static DEFINE_MUTEX(sfp_mutex);
-
 struct sff_data {
 	unsigned int gpios;
 	bool (*module_supported)(const struct sfp_eeprom_id *id);
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 533b6fb..72a55b6 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1241,6 +1241,7 @@
 	{QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)},	/* Olivetti Olicard 500 */
 	{QMI_FIXED_INTF(0x1e2d, 0x0060, 4)},	/* Cinterion PLxx */
 	{QMI_FIXED_INTF(0x1e2d, 0x0053, 4)},	/* Cinterion PHxx,PXxx */
+	{QMI_FIXED_INTF(0x1e2d, 0x0063, 10)},	/* Cinterion ALASxx (1 RmNet) */
 	{QMI_FIXED_INTF(0x1e2d, 0x0082, 4)},	/* Cinterion PHxx,PXxx (2 RmNet) */
 	{QMI_FIXED_INTF(0x1e2d, 0x0082, 5)},	/* Cinterion PHxx,PXxx (2 RmNet) */
 	{QMI_FIXED_INTF(0x1e2d, 0x0083, 4)},	/* Cinterion PHxx,PXxx (1 RmNet + USB Audio)*/
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index c7861e4..d837dad 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2458,6 +2458,13 @@
 	struct netlink_ext_ack	*extack;
 };
 
+struct netdev_notifier_info_ext {
+	struct netdev_notifier_info info; /* must be first */
+	union {
+		u32 mtu;
+	} ext;
+};
+
 struct netdev_notifier_change_info {
 	struct netdev_notifier_info info; /* must be first */
 	unsigned int flags_changed;
diff --git a/include/net/devlink.h b/include/net/devlink.h
index b9b89d6..99efc15 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -298,7 +298,7 @@
 
 #define DEVLINK_RESOURCE_ID_PARENT_TOP 0
 
-#define DEVLINK_PARAM_MAX_STRING_VALUE 32
+#define __DEVLINK_PARAM_MAX_STRING_VALUE 32
 enum devlink_param_type {
 	DEVLINK_PARAM_TYPE_U8,
 	DEVLINK_PARAM_TYPE_U16,
@@ -311,7 +311,7 @@
 	u8 vu8;
 	u16 vu16;
 	u32 vu32;
-	const char *vstr;
+	char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
 	bool vbool;
 };
 
@@ -553,6 +553,8 @@
 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
 				       union devlink_param_value init_val);
 void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
+void devlink_param_value_str_fill(union devlink_param_value *dst_val,
+				  const char *src);
 struct devlink_region *devlink_region_create(struct devlink *devlink,
 					     const char *region_name,
 					     u32 region_max_snapshots,
@@ -789,6 +791,12 @@
 {
 }
 
+static inline void
+devlink_param_value_str_fill(union devlink_param_value *dst_val,
+			     const char *src)
+{
+}
+
 static inline struct devlink_region *
 devlink_region_create(struct devlink *devlink,
 		      const char *region_name,
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 69c91d1..c9b7b13 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -394,6 +394,7 @@
 int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force);
 int fib_sync_down_addr(struct net_device *dev, __be32 local);
 int fib_sync_up(struct net_device *dev, unsigned int nh_flags);
+void fib_sync_mtu(struct net_device *dev, u32 orig_mtu);
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 int fib_multipath_hash(const struct net *net, const struct flowi4 *fl4,
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 837393f..573d5b9 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -931,6 +931,7 @@
 	    TP_fast_assign(
 		    __entry->call = call_id;
 		    memcpy(&__entry->whdr, whdr, sizeof(__entry->whdr));
+		    __entry->where = where;
 			   ),
 
 	    TP_printk("c=%08x %08x:%08x:%08x:%04x %08x %08x %02x %02x %s %s",
diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h
index ac9e8c9..8cb3a6f 100644
--- a/include/uapi/linux/smc_diag.h
+++ b/include/uapi/linux/smc_diag.h
@@ -18,14 +18,17 @@
  * on the internal clcsock, and more SMC-related socket data
  */
 struct smc_diag_msg {
-	__u8	diag_family;
-	__u8	diag_state;
-	__u8	diag_mode;
-	__u8	diag_shutdown;
+	__u8		diag_family;
+	__u8		diag_state;
+	union {
+		__u8	diag_mode;
+		__u8	diag_fallback; /* the old name of the field */
+	};
+	__u8		diag_shutdown;
 	struct inet_diag_sockid id;
 
-	__u32	diag_uid;
-	__u64	diag_inode;
+	__u32		diag_uid;
+	__aligned_u64	diag_inode;
 };
 
 /* Mode of a connection */
@@ -99,11 +102,11 @@
 };
 
 struct smcd_diag_dmbinfo {		/* SMC-D Socket internals */
-	__u32 linkid;			/* Link identifier */
-	__u64 peer_gid;			/* Peer GID */
-	__u64 my_gid;			/* My GID */
-	__u64 token;			/* Token of DMB */
-	__u64 peer_token;		/* Token of remote DMBE */
+	__u32		linkid;		/* Link identifier */
+	__aligned_u64	peer_gid;	/* Peer GID */
+	__aligned_u64	my_gid;		/* My GID */
+	__aligned_u64	token;		/* Token of DMB */
+	__aligned_u64	peer_token;	/* Token of remote DMBE */
 };
 
 #endif /* _UAPI_SMC_DIAG_H_ */
diff --git a/include/uapi/linux/udp.h b/include/uapi/linux/udp.h
index 09d00f8..09502de 100644
--- a/include/uapi/linux/udp.h
+++ b/include/uapi/linux/udp.h
@@ -40,5 +40,6 @@
 #define UDP_ENCAP_L2TPINUDP	3 /* rfc2661 */
 #define UDP_ENCAP_GTP0		4 /* GSM TS 09.60 */
 #define UDP_ENCAP_GTP1U		5 /* 3GPP TS 29.060 */
+#define UDP_ENCAP_RXRPC		6
 
 #endif /* _UAPI_LINUX_UDP_H */
diff --git a/net/core/dev.c b/net/core/dev.c
index 82114e1..93243479 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1752,6 +1752,28 @@
 }
 EXPORT_SYMBOL(call_netdevice_notifiers);
 
+/**
+ *	call_netdevice_notifiers_mtu - call all network notifier blocks
+ *	@val: value passed unmodified to notifier function
+ *	@dev: net_device pointer passed unmodified to notifier function
+ *	@arg: additional u32 argument passed to the notifier function
+ *
+ *	Call all network notifier blocks.  Parameters and return value
+ *	are as for raw_notifier_call_chain().
+ */
+static int call_netdevice_notifiers_mtu(unsigned long val,
+					struct net_device *dev, u32 arg)
+{
+	struct netdev_notifier_info_ext info = {
+		.info.dev = dev,
+		.ext.mtu = arg,
+	};
+
+	BUILD_BUG_ON(offsetof(struct netdev_notifier_info_ext, info) != 0);
+
+	return call_netdevice_notifiers_info(val, &info.info);
+}
+
 #ifdef CONFIG_NET_INGRESS
 static DEFINE_STATIC_KEY_FALSE(ingress_needed_key);
 
@@ -7574,14 +7596,16 @@
 	err = __dev_set_mtu(dev, new_mtu);
 
 	if (!err) {
-		err = call_netdevice_notifiers(NETDEV_CHANGEMTU, dev);
+		err = call_netdevice_notifiers_mtu(NETDEV_CHANGEMTU, dev,
+						   orig_mtu);
 		err = notifier_to_errno(err);
 		if (err) {
 			/* setting mtu back and notifying everyone again,
 			 * so that they have a chance to revert changes.
 			 */
 			__dev_set_mtu(dev, orig_mtu);
-			call_netdevice_notifiers(NETDEV_CHANGEMTU, dev);
+			call_netdevice_notifiers_mtu(NETDEV_CHANGEMTU, dev,
+						     new_mtu);
 		}
 	}
 	return err;
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 8c0ed22..6bc4293 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2995,6 +2995,8 @@
 				  struct genl_info *info,
 				  union devlink_param_value *value)
 {
+	int len;
+
 	if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
 	    !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
 		return -EINVAL;
@@ -3010,10 +3012,13 @@
 		value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
 		break;
 	case DEVLINK_PARAM_TYPE_STRING:
-		if (nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) >
-		    DEVLINK_PARAM_MAX_STRING_VALUE)
+		len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]),
+			      nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
+		if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) ||
+		    len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
 			return -EINVAL;
-		value->vstr = nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
+		strcpy(value->vstr,
+		       nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
 		break;
 	case DEVLINK_PARAM_TYPE_BOOL:
 		value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
@@ -3100,7 +3105,10 @@
 		return -EOPNOTSUPP;
 
 	if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
-		param_item->driverinit_value = value;
+		if (param->type == DEVLINK_PARAM_TYPE_STRING)
+			strcpy(param_item->driverinit_value.vstr, value.vstr);
+		else
+			param_item->driverinit_value = value;
 		param_item->driverinit_value_valid = true;
 	} else {
 		if (!param->set)
@@ -4540,7 +4548,10 @@
 					      DEVLINK_PARAM_CMODE_DRIVERINIT))
 		return -EOPNOTSUPP;
 
-	*init_val = param_item->driverinit_value;
+	if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+		strcpy(init_val->vstr, param_item->driverinit_value.vstr);
+	else
+		*init_val = param_item->driverinit_value;
 
 	return 0;
 }
@@ -4571,7 +4582,10 @@
 					      DEVLINK_PARAM_CMODE_DRIVERINIT))
 		return -EOPNOTSUPP;
 
-	param_item->driverinit_value = init_val;
+	if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+		strcpy(param_item->driverinit_value.vstr, init_val.vstr);
+	else
+		param_item->driverinit_value = init_val;
 	param_item->driverinit_value_valid = true;
 
 	devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
@@ -4604,6 +4618,23 @@
 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
 
 /**
+ *	devlink_param_value_str_fill - Safely fill-up the string preventing
+ *				       from overflow of the preallocated buffer
+ *
+ *	@dst_val: destination devlink_param_value
+ *	@src: source buffer
+ */
+void devlink_param_value_str_fill(union devlink_param_value *dst_val,
+				  const char *src)
+{
+	size_t len;
+
+	len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
+	WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
+}
+EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
+
+/**
  *	devlink_region_create - create a new address region
  *
  *	@devlink: devlink
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b2c807f..428094b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4452,14 +4452,16 @@
  */
 bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off)
 {
-	if (unlikely(start > skb_headlen(skb)) ||
-	    unlikely((int)start + off > skb_headlen(skb) - 2)) {
-		net_warn_ratelimited("bad partial csum: csum=%u/%u len=%u\n",
-				     start, off, skb_headlen(skb));
+	u32 csum_end = (u32)start + (u32)off + sizeof(__sum16);
+	u32 csum_start = skb_headroom(skb) + (u32)start;
+
+	if (unlikely(csum_start > U16_MAX || csum_end > skb_headlen(skb))) {
+		net_warn_ratelimited("bad partial csum: csum=%u/%u headroom=%u headlen=%u\n",
+				     start, off, skb_headroom(skb), skb_headlen(skb));
 		return false;
 	}
 	skb->ip_summed = CHECKSUM_PARTIAL;
-	skb->csum_start = skb_headroom(skb) + start;
+	skb->csum_start = csum_start;
 	skb->csum_offset = off;
 	skb_set_transport_header(skb, start);
 	return true;
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 2998b0e..0113993 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1243,7 +1243,8 @@
 static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-	struct netdev_notifier_changeupper_info *info;
+	struct netdev_notifier_changeupper_info *upper_info = ptr;
+	struct netdev_notifier_info_ext *info_ext = ptr;
 	struct in_device *in_dev;
 	struct net *net = dev_net(dev);
 	unsigned int flags;
@@ -1278,16 +1279,19 @@
 			fib_sync_up(dev, RTNH_F_LINKDOWN);
 		else
 			fib_sync_down_dev(dev, event, false);
-		/* fall through */
+		rt_cache_flush(net);
+		break;
 	case NETDEV_CHANGEMTU:
+		fib_sync_mtu(dev, info_ext->ext.mtu);
 		rt_cache_flush(net);
 		break;
 	case NETDEV_CHANGEUPPER:
-		info = ptr;
+		upper_info = ptr;
 		/* flush all routes if dev is linked to or unlinked from
 		 * an L3 master device (e.g., VRF)
 		 */
-		if (info->upper_dev && netif_is_l3_master(info->upper_dev))
+		if (upper_info->upper_dev &&
+		    netif_is_l3_master(upper_info->upper_dev))
 			fib_disable_ip(dev, NETDEV_DOWN, true);
 		break;
 	}
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index f3c89cc..446204c 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1470,6 +1470,56 @@
 	return NOTIFY_DONE;
 }
 
+/* Update the PMTU of exceptions when:
+ * - the new MTU of the first hop becomes smaller than the PMTU
+ * - the old MTU was the same as the PMTU, and it limited discovery of
+ *   larger MTUs on the path. With that limit raised, we can now
+ *   discover larger MTUs
+ * A special case is locked exceptions, for which the PMTU is smaller
+ * than the minimal accepted PMTU:
+ * - if the new MTU is greater than the PMTU, don't make any change
+ * - otherwise, unlock and set PMTU
+ */
+static void nh_update_mtu(struct fib_nh *nh, u32 new, u32 orig)
+{
+	struct fnhe_hash_bucket *bucket;
+	int i;
+
+	bucket = rcu_dereference_protected(nh->nh_exceptions, 1);
+	if (!bucket)
+		return;
+
+	for (i = 0; i < FNHE_HASH_SIZE; i++) {
+		struct fib_nh_exception *fnhe;
+
+		for (fnhe = rcu_dereference_protected(bucket[i].chain, 1);
+		     fnhe;
+		     fnhe = rcu_dereference_protected(fnhe->fnhe_next, 1)) {
+			if (fnhe->fnhe_mtu_locked) {
+				if (new <= fnhe->fnhe_pmtu) {
+					fnhe->fnhe_pmtu = new;
+					fnhe->fnhe_mtu_locked = false;
+				}
+			} else if (new < fnhe->fnhe_pmtu ||
+				   orig == fnhe->fnhe_pmtu) {
+				fnhe->fnhe_pmtu = new;
+			}
+		}
+	}
+}
+
+void fib_sync_mtu(struct net_device *dev, u32 orig_mtu)
+{
+	unsigned int hash = fib_devindex_hashfn(dev->ifindex);
+	struct hlist_head *head = &fib_info_devhash[hash];
+	struct fib_nh *nh;
+
+	hlist_for_each_entry(nh, head, nh_hash) {
+		if (nh->nh_dev == dev)
+			nh_update_mtu(nh, dev->mtu, orig_mtu);
+	}
+}
+
 /* Event              force Flags           Description
  * NETDEV_CHANGE      0     LINKDOWN        Carrier OFF, not for scope host
  * NETDEV_DOWN        0     LINKDOWN|DEAD   Link down, not for scope host
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b678466..8501554 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1001,21 +1001,22 @@
 static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
 {
 	struct dst_entry *dst = &rt->dst;
+	u32 old_mtu = ipv4_mtu(dst);
 	struct fib_result res;
 	bool lock = false;
 
 	if (ip_mtu_locked(dst))
 		return;
 
-	if (ipv4_mtu(dst) < mtu)
+	if (old_mtu < mtu)
 		return;
 
 	if (mtu < ip_rt_min_pmtu) {
 		lock = true;
-		mtu = ip_rt_min_pmtu;
+		mtu = min(old_mtu, ip_rt_min_pmtu);
 	}
 
-	if (rt->rt_pmtu == mtu &&
+	if (rt->rt_pmtu == mtu && !lock &&
 	    time_before(jiffies, dst->expires - ip_rt_mtu_expires / 2))
 		return;
 
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 7d69dd6..c32a4c1 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1627,7 +1627,7 @@
 	*err = error;
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(__skb_recv_udp);
+EXPORT_SYMBOL(__skb_recv_udp);
 
 /*
  * 	This should be easy, if there is something there we
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 5516f55..cbe4617 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -196,6 +196,8 @@
 				*ppcpu_rt = NULL;
 			}
 		}
+
+		free_percpu(f6i->rt6i_pcpu);
 	}
 
 	lwtstate_put(f6i->fib6_nh.nh_lwtstate);
diff --git a/net/rds/send.c b/net/rds/send.c
index 57b3d5a..fe785ee 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -1007,7 +1007,8 @@
 	return ret;
 }
 
-static int rds_send_mprds_hash(struct rds_sock *rs, struct rds_connection *conn)
+static int rds_send_mprds_hash(struct rds_sock *rs,
+			       struct rds_connection *conn, int nonblock)
 {
 	int hash;
 
@@ -1023,10 +1024,16 @@
 		 * used.  But if we are interrupted, we have to use the zero
 		 * c_path in case the connection ends up being non-MP capable.
 		 */
-		if (conn->c_npaths == 0)
+		if (conn->c_npaths == 0) {
+			/* Cannot wait for the connection be made, so just use
+			 * the base c_path.
+			 */
+			if (nonblock)
+				return 0;
 			if (wait_event_interruptible(conn->c_hs_waitq,
 						     conn->c_npaths != 0))
 				hash = 0;
+		}
 		if (conn->c_npaths == 1)
 			hash = 0;
 	}
@@ -1256,7 +1263,7 @@
 	}
 
 	if (conn->c_trans->t_mp_capable)
-		cpath = &conn->c_path[rds_send_mprds_hash(rs, conn)];
+		cpath = &conn->c_path[rds_send_mprds_hash(rs, conn, nonblock)];
 	else
 		cpath = &conn->c_path[0];
 
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index ef95541..a6e6cae 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -302,6 +302,7 @@
 
 	/* calculated RTT cache */
 #define RXRPC_RTT_CACHE_SIZE 32
+	spinlock_t		rtt_input_lock;	/* RTT lock for input routine */
 	ktime_t			rtt_last_req;	/* Time of last RTT request */
 	u64			rtt;		/* Current RTT estimate (in nS) */
 	u64			rtt_sum;	/* Sum of cache contents */
@@ -442,17 +443,17 @@
 	spinlock_t		state_lock;	/* state-change lock */
 	enum rxrpc_conn_cache_state cache_state;
 	enum rxrpc_conn_proto_state state;	/* current state of connection */
-	u32			local_abort;	/* local abort code */
-	u32			remote_abort;	/* remote abort code */
+	u32			abort_code;	/* Abort code of connection abort */
 	int			debug_id;	/* debug ID for printks */
 	atomic_t		serial;		/* packet serial number counter */
 	unsigned int		hi_serial;	/* highest serial number received */
 	u32			security_nonce;	/* response re-use preventer */
-	u16			service_id;	/* Service ID, possibly upgraded */
+	u32			service_id;	/* Service ID, possibly upgraded */
 	u8			size_align;	/* data size alignment (for security) */
 	u8			security_size;	/* security header size */
 	u8			security_ix;	/* security type */
 	u8			out_clientflag;	/* RXRPC_CLIENT_INITIATED if we are client */
+	short			error;		/* Local error code */
 };
 
 static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp)
@@ -635,6 +636,8 @@
 	bool			tx_phase;	/* T if transmission phase, F if receive phase */
 	u8			nr_jumbo_bad;	/* Number of jumbo dups/exceeds-windows */
 
+	spinlock_t		input_lock;	/* Lock for packet input to this call */
+
 	/* receive-phase ACK management */
 	u8			ackr_reason;	/* reason to ACK */
 	u16			ackr_skew;	/* skew on packet being ACK'd */
@@ -720,8 +723,6 @@
 void rxrpc_discard_prealloc(struct rxrpc_sock *);
 struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *,
 					   struct rxrpc_sock *,
-					   struct rxrpc_peer *,
-					   struct rxrpc_connection *,
 					   struct sk_buff *);
 void rxrpc_accept_incoming_calls(struct rxrpc_local *);
 struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long,
@@ -891,8 +892,9 @@
 extern struct idr rxrpc_client_conn_ids;
 
 void rxrpc_destroy_client_conn_ids(void);
-int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *,
-		       struct sockaddr_rxrpc *, gfp_t);
+int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *,
+		       struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *,
+		       gfp_t);
 void rxrpc_expose_client_call(struct rxrpc_call *);
 void rxrpc_disconnect_client_call(struct rxrpc_call *);
 void rxrpc_put_client_conn(struct rxrpc_connection *);
@@ -965,7 +967,7 @@
 /*
  * input.c
  */
-void rxrpc_data_ready(struct sock *);
+int rxrpc_input_packet(struct sock *, struct sk_buff *);
 
 /*
  * insecure.c
@@ -1045,10 +1047,11 @@
  */
 struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *,
 					 const struct sockaddr_rxrpc *);
-struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *,
+struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *,
 				     struct sockaddr_rxrpc *, gfp_t);
 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t);
-void rxrpc_new_incoming_peer(struct rxrpc_local *, struct rxrpc_peer *);
+void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *,
+			     struct rxrpc_peer *);
 void rxrpc_destroy_all_peers(struct rxrpc_net *);
 struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *);
 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *);
diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c
index 9c7f26d..652e314 100644
--- a/net/rxrpc/call_accept.c
+++ b/net/rxrpc/call_accept.c
@@ -287,7 +287,7 @@
 					  (peer_tail + 1) &
 					  (RXRPC_BACKLOG_MAX - 1));
 
-			rxrpc_new_incoming_peer(local, peer);
+			rxrpc_new_incoming_peer(rx, local, peer);
 		}
 
 		/* Now allocate and set up the connection */
@@ -333,11 +333,11 @@
  */
 struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
 					   struct rxrpc_sock *rx,
-					   struct rxrpc_peer *peer,
-					   struct rxrpc_connection *conn,
 					   struct sk_buff *skb)
 {
 	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
+	struct rxrpc_connection *conn;
+	struct rxrpc_peer *peer;
 	struct rxrpc_call *call;
 
 	_enter("");
@@ -354,6 +354,13 @@
 		goto out;
 	}
 
+	/* The peer, connection and call may all have sprung into existence due
+	 * to a duplicate packet being handled on another CPU in parallel, so
+	 * we have to recheck the routing.  However, we're now holding
+	 * rx->incoming_lock, so the values should remain stable.
+	 */
+	conn = rxrpc_find_connection_rcu(local, skb, &peer);
+
 	call = rxrpc_alloc_incoming_call(rx, local, peer, conn, skb);
 	if (!call) {
 		skb->mark = RXRPC_SKB_MARK_REJECT_BUSY;
@@ -396,20 +403,22 @@
 
 	case RXRPC_CONN_SERVICE:
 		write_lock(&call->state_lock);
-		if (rx->discard_new_call)
-			call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
-		else
-			call->state = RXRPC_CALL_SERVER_ACCEPTING;
+		if (call->state < RXRPC_CALL_COMPLETE) {
+			if (rx->discard_new_call)
+				call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
+			else
+				call->state = RXRPC_CALL_SERVER_ACCEPTING;
+		}
 		write_unlock(&call->state_lock);
 		break;
 
 	case RXRPC_CONN_REMOTELY_ABORTED:
 		rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED,
-					  conn->remote_abort, -ECONNABORTED);
+					  conn->abort_code, conn->error);
 		break;
 	case RXRPC_CONN_LOCALLY_ABORTED:
 		rxrpc_abort_call("CON", call, sp->hdr.seq,
-				 conn->local_abort, -ECONNABORTED);
+				 conn->abort_code, conn->error);
 		break;
 	default:
 		BUG();
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 799f75b..8f1a8f8 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -138,6 +138,7 @@
 	init_waitqueue_head(&call->waitq);
 	spin_lock_init(&call->lock);
 	spin_lock_init(&call->notify_lock);
+	spin_lock_init(&call->input_lock);
 	rwlock_init(&call->state_lock);
 	atomic_set(&call->usage, 1);
 	call->debug_id = debug_id;
@@ -287,7 +288,7 @@
 	/* Set up or get a connection record and set the protocol parameters,
 	 * including channel number and call ID.
 	 */
-	ret = rxrpc_connect_call(call, cp, srx, gfp);
+	ret = rxrpc_connect_call(rx, call, cp, srx, gfp);
 	if (ret < 0)
 		goto error;
 
@@ -339,7 +340,7 @@
 	/* Set up or get a connection record and set the protocol parameters,
 	 * including channel number and call ID.
 	 */
-	ret = rxrpc_connect_call(call, cp, srx, gfp);
+	ret = rxrpc_connect_call(rx, call, cp, srx, gfp);
 	if (ret < 0)
 		goto error;
 
diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c
index 8acf74f..521189f 100644
--- a/net/rxrpc/conn_client.c
+++ b/net/rxrpc/conn_client.c
@@ -276,7 +276,8 @@
  * If we return with a connection, the call will be on its waiting list.  It's
  * left to the caller to assign a channel and wake up the call.
  */
-static int rxrpc_get_client_conn(struct rxrpc_call *call,
+static int rxrpc_get_client_conn(struct rxrpc_sock *rx,
+				 struct rxrpc_call *call,
 				 struct rxrpc_conn_parameters *cp,
 				 struct sockaddr_rxrpc *srx,
 				 gfp_t gfp)
@@ -289,7 +290,7 @@
 
 	_enter("{%d,%lx},", call->debug_id, call->user_call_ID);
 
-	cp->peer = rxrpc_lookup_peer(cp->local, srx, gfp);
+	cp->peer = rxrpc_lookup_peer(rx, cp->local, srx, gfp);
 	if (!cp->peer)
 		goto error;
 
@@ -683,7 +684,8 @@
  * find a connection for a call
  * - called in process context with IRQs enabled
  */
-int rxrpc_connect_call(struct rxrpc_call *call,
+int rxrpc_connect_call(struct rxrpc_sock *rx,
+		       struct rxrpc_call *call,
 		       struct rxrpc_conn_parameters *cp,
 		       struct sockaddr_rxrpc *srx,
 		       gfp_t gfp)
@@ -696,7 +698,7 @@
 	rxrpc_discard_expired_client_conns(&rxnet->client_conn_reaper);
 	rxrpc_cull_active_client_conns(rxnet);
 
-	ret = rxrpc_get_client_conn(call, cp, srx, gfp);
+	ret = rxrpc_get_client_conn(rx, call, cp, srx, gfp);
 	if (ret < 0)
 		goto out;
 
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index 6df56ce..b6fca8e 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -126,7 +126,7 @@
 
 	switch (chan->last_type) {
 	case RXRPC_PACKET_TYPE_ABORT:
-		_proto("Tx ABORT %%%u { %d } [re]", serial, conn->local_abort);
+		_proto("Tx ABORT %%%u { %d } [re]", serial, conn->abort_code);
 		break;
 	case RXRPC_PACKET_TYPE_ACK:
 		trace_rxrpc_tx_ack(chan->call_debug_id, serial,
@@ -153,13 +153,12 @@
  * pass a connection-level abort onto all calls on that connection
  */
 static void rxrpc_abort_calls(struct rxrpc_connection *conn,
-			      enum rxrpc_call_completion compl,
-			      u32 abort_code, int error)
+			      enum rxrpc_call_completion compl)
 {
 	struct rxrpc_call *call;
 	int i;
 
-	_enter("{%d},%x", conn->debug_id, abort_code);
+	_enter("{%d},%x", conn->debug_id, conn->abort_code);
 
 	spin_lock(&conn->channel_lock);
 
@@ -172,9 +171,11 @@
 				trace_rxrpc_abort(call->debug_id,
 						  "CON", call->cid,
 						  call->call_id, 0,
-						  abort_code, error);
+						  conn->abort_code,
+						  conn->error);
 			if (rxrpc_set_call_completion(call, compl,
-						      abort_code, error))
+						      conn->abort_code,
+						      conn->error))
 				rxrpc_notify_socket(call);
 		}
 	}
@@ -207,10 +208,12 @@
 		return 0;
 	}
 
+	conn->error = error;
+	conn->abort_code = abort_code;
 	conn->state = RXRPC_CONN_LOCALLY_ABORTED;
 	spin_unlock_bh(&conn->state_lock);
 
-	rxrpc_abort_calls(conn, RXRPC_CALL_LOCALLY_ABORTED, abort_code, error);
+	rxrpc_abort_calls(conn, RXRPC_CALL_LOCALLY_ABORTED);
 
 	msg.msg_name	= &conn->params.peer->srx.transport;
 	msg.msg_namelen	= conn->params.peer->srx.transport_len;
@@ -229,7 +232,7 @@
 	whdr._rsvd	= 0;
 	whdr.serviceId	= htons(conn->service_id);
 
-	word		= htonl(conn->local_abort);
+	word		= htonl(conn->abort_code);
 
 	iov[0].iov_base	= &whdr;
 	iov[0].iov_len	= sizeof(whdr);
@@ -240,7 +243,7 @@
 
 	serial = atomic_inc_return(&conn->serial);
 	whdr.serial = htonl(serial);
-	_proto("Tx CONN ABORT %%%u { %d }", serial, conn->local_abort);
+	_proto("Tx CONN ABORT %%%u { %d }", serial, conn->abort_code);
 
 	ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 2, len);
 	if (ret < 0) {
@@ -315,9 +318,10 @@
 		abort_code = ntohl(wtmp);
 		_proto("Rx ABORT %%%u { ac=%d }", sp->hdr.serial, abort_code);
 
+		conn->error = -ECONNABORTED;
+		conn->abort_code = abort_code;
 		conn->state = RXRPC_CONN_REMOTELY_ABORTED;
-		rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED,
-				  abort_code, -ECONNABORTED);
+		rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED);
 		return -ECONNABORTED;
 
 	case RXRPC_PACKET_TYPE_CHALLENGE:
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 800f5b8..570b49d 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -216,10 +216,11 @@
 /*
  * Apply a hard ACK by advancing the Tx window.
  */
-static void rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to,
+static bool rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to,
 				   struct rxrpc_ack_summary *summary)
 {
 	struct sk_buff *skb, *list = NULL;
+	bool rot_last = false;
 	int ix;
 	u8 annotation;
 
@@ -243,15 +244,17 @@
 		skb->next = list;
 		list = skb;
 
-		if (annotation & RXRPC_TX_ANNO_LAST)
+		if (annotation & RXRPC_TX_ANNO_LAST) {
 			set_bit(RXRPC_CALL_TX_LAST, &call->flags);
+			rot_last = true;
+		}
 		if ((annotation & RXRPC_TX_ANNO_MASK) != RXRPC_TX_ANNO_ACK)
 			summary->nr_rot_new_acks++;
 	}
 
 	spin_unlock(&call->lock);
 
-	trace_rxrpc_transmit(call, (test_bit(RXRPC_CALL_TX_LAST, &call->flags) ?
+	trace_rxrpc_transmit(call, (rot_last ?
 				    rxrpc_transmit_rotate_last :
 				    rxrpc_transmit_rotate));
 	wake_up(&call->waitq);
@@ -262,6 +265,8 @@
 		skb->next = NULL;
 		rxrpc_free_skb(skb, rxrpc_skb_tx_freed);
 	}
+
+	return rot_last;
 }
 
 /*
@@ -273,23 +278,26 @@
 static bool rxrpc_end_tx_phase(struct rxrpc_call *call, bool reply_begun,
 			       const char *abort_why)
 {
+	unsigned int state;
 
 	ASSERT(test_bit(RXRPC_CALL_TX_LAST, &call->flags));
 
 	write_lock(&call->state_lock);
 
-	switch (call->state) {
+	state = call->state;
+	switch (state) {
 	case RXRPC_CALL_CLIENT_SEND_REQUEST:
 	case RXRPC_CALL_CLIENT_AWAIT_REPLY:
 		if (reply_begun)
-			call->state = RXRPC_CALL_CLIENT_RECV_REPLY;
+			call->state = state = RXRPC_CALL_CLIENT_RECV_REPLY;
 		else
-			call->state = RXRPC_CALL_CLIENT_AWAIT_REPLY;
+			call->state = state = RXRPC_CALL_CLIENT_AWAIT_REPLY;
 		break;
 
 	case RXRPC_CALL_SERVER_AWAIT_ACK:
 		__rxrpc_call_completed(call);
 		rxrpc_notify_socket(call);
+		state = call->state;
 		break;
 
 	default:
@@ -297,11 +305,10 @@
 	}
 
 	write_unlock(&call->state_lock);
-	if (call->state == RXRPC_CALL_CLIENT_AWAIT_REPLY) {
+	if (state == RXRPC_CALL_CLIENT_AWAIT_REPLY)
 		trace_rxrpc_transmit(call, rxrpc_transmit_await_reply);
-	} else {
+	else
 		trace_rxrpc_transmit(call, rxrpc_transmit_end);
-	}
 	_leave(" = ok");
 	return true;
 
@@ -332,11 +339,11 @@
 		trace_rxrpc_timer(call, rxrpc_timer_init_for_reply, now);
 	}
 
-	if (!test_bit(RXRPC_CALL_TX_LAST, &call->flags))
-		rxrpc_rotate_tx_window(call, top, &summary);
 	if (!test_bit(RXRPC_CALL_TX_LAST, &call->flags)) {
-		rxrpc_proto_abort("TXL", call, top);
-		return false;
+		if (!rxrpc_rotate_tx_window(call, top, &summary)) {
+			rxrpc_proto_abort("TXL", call, top);
+			return false;
+		}
 	}
 	if (!rxrpc_end_tx_phase(call, true, "ETD"))
 		return false;
@@ -452,13 +459,15 @@
 		}
 	}
 
+	spin_lock(&call->input_lock);
+
 	/* Received data implicitly ACKs all of the request packets we sent
 	 * when we're acting as a client.
 	 */
 	if ((state == RXRPC_CALL_CLIENT_SEND_REQUEST ||
 	     state == RXRPC_CALL_CLIENT_AWAIT_REPLY) &&
 	    !rxrpc_receiving_reply(call))
-		return;
+		goto unlock;
 
 	call->ackr_prev_seq = seq;
 
@@ -488,12 +497,16 @@
 
 	if (flags & RXRPC_LAST_PACKET) {
 		if (test_bit(RXRPC_CALL_RX_LAST, &call->flags) &&
-		    seq != call->rx_top)
-			return rxrpc_proto_abort("LSN", call, seq);
+		    seq != call->rx_top) {
+			rxrpc_proto_abort("LSN", call, seq);
+			goto unlock;
+		}
 	} else {
 		if (test_bit(RXRPC_CALL_RX_LAST, &call->flags) &&
-		    after_eq(seq, call->rx_top))
-			return rxrpc_proto_abort("LSA", call, seq);
+		    after_eq(seq, call->rx_top)) {
+			rxrpc_proto_abort("LSA", call, seq);
+			goto unlock;
+		}
 	}
 
 	trace_rxrpc_rx_data(call->debug_id, seq, serial, flags, annotation);
@@ -560,8 +573,10 @@
 skip:
 	offset += len;
 	if (flags & RXRPC_JUMBO_PACKET) {
-		if (skb_copy_bits(skb, offset, &flags, 1) < 0)
-			return rxrpc_proto_abort("XJF", call, seq);
+		if (skb_copy_bits(skb, offset, &flags, 1) < 0) {
+			rxrpc_proto_abort("XJF", call, seq);
+			goto unlock;
+		}
 		offset += sizeof(struct rxrpc_jumbo_header);
 		seq++;
 		serial++;
@@ -601,6 +616,9 @@
 		trace_rxrpc_notify_socket(call->debug_id, serial);
 		rxrpc_notify_socket(call);
 	}
+
+unlock:
+	spin_unlock(&call->input_lock);
 	_leave(" [queued]");
 }
 
@@ -687,15 +705,14 @@
 
 	ping_time = call->ping_time;
 	smp_rmb();
-	ping_serial = call->ping_serial;
+	ping_serial = READ_ONCE(call->ping_serial);
 
 	if (orig_serial == call->acks_lost_ping)
 		rxrpc_input_check_for_lost_ack(call);
 
-	if (!test_bit(RXRPC_CALL_PINGING, &call->flags) ||
-	    before(orig_serial, ping_serial))
+	if (before(orig_serial, ping_serial) ||
+	    !test_and_clear_bit(RXRPC_CALL_PINGING, &call->flags))
 		return;
-	clear_bit(RXRPC_CALL_PINGING, &call->flags);
 	if (after(orig_serial, ping_serial))
 		return;
 
@@ -861,15 +878,32 @@
 				  rxrpc_propose_ack_respond_to_ack);
 	}
 
-	ioffset = offset + nr_acks + 3;
-	if (skb->len >= ioffset + sizeof(buf.info)) {
-		if (skb_copy_bits(skb, ioffset, &buf.info, sizeof(buf.info)) < 0)
-			return rxrpc_proto_abort("XAI", call, 0);
-		rxrpc_input_ackinfo(call, skb, &buf.info);
-	}
+	/* Discard any out-of-order or duplicate ACKs. */
+	if (before_eq(sp->hdr.serial, call->acks_latest))
+		return;
 
-	if (first_soft_ack == 0)
-		return rxrpc_proto_abort("AK0", call, 0);
+	buf.info.rxMTU = 0;
+	ioffset = offset + nr_acks + 3;
+	if (skb->len >= ioffset + sizeof(buf.info) &&
+	    skb_copy_bits(skb, ioffset, &buf.info, sizeof(buf.info)) < 0)
+		return rxrpc_proto_abort("XAI", call, 0);
+
+	spin_lock(&call->input_lock);
+
+	/* Discard any out-of-order or duplicate ACKs. */
+	if (before_eq(sp->hdr.serial, call->acks_latest))
+		goto out;
+	call->acks_latest_ts = skb->tstamp;
+	call->acks_latest = sp->hdr.serial;
+
+	/* Parse rwind and mtu sizes if provided. */
+	if (buf.info.rxMTU)
+		rxrpc_input_ackinfo(call, skb, &buf.info);
+
+	if (first_soft_ack == 0) {
+		rxrpc_proto_abort("AK0", call, 0);
+		goto out;
+	}
 
 	/* Ignore ACKs unless we are or have just been transmitting. */
 	switch (READ_ONCE(call->state)) {
@@ -879,37 +913,33 @@
 	case RXRPC_CALL_SERVER_AWAIT_ACK:
 		break;
 	default:
-		return;
+		goto out;
 	}
 
-	/* Discard any out-of-order or duplicate ACKs. */
-	if (before_eq(sp->hdr.serial, call->acks_latest)) {
-		_debug("discard ACK %d <= %d",
-		       sp->hdr.serial, call->acks_latest);
-		return;
-	}
-	call->acks_latest_ts = skb->tstamp;
-	call->acks_latest = sp->hdr.serial;
-
 	if (before(hard_ack, call->tx_hard_ack) ||
-	    after(hard_ack, call->tx_top))
-		return rxrpc_proto_abort("AKW", call, 0);
-	if (nr_acks > call->tx_top - hard_ack)
-		return rxrpc_proto_abort("AKN", call, 0);
-
-	if (after(hard_ack, call->tx_hard_ack))
-		rxrpc_rotate_tx_window(call, hard_ack, &summary);
-
-	if (nr_acks > 0) {
-		if (skb_copy_bits(skb, offset, buf.acks, nr_acks) < 0)
-			return rxrpc_proto_abort("XSA", call, 0);
-		rxrpc_input_soft_acks(call, buf.acks, first_soft_ack, nr_acks,
-				      &summary);
+	    after(hard_ack, call->tx_top)) {
+		rxrpc_proto_abort("AKW", call, 0);
+		goto out;
+	}
+	if (nr_acks > call->tx_top - hard_ack) {
+		rxrpc_proto_abort("AKN", call, 0);
+		goto out;
 	}
 
-	if (test_bit(RXRPC_CALL_TX_LAST, &call->flags)) {
-		rxrpc_end_tx_phase(call, false, "ETA");
-		return;
+	if (after(hard_ack, call->tx_hard_ack)) {
+		if (rxrpc_rotate_tx_window(call, hard_ack, &summary)) {
+			rxrpc_end_tx_phase(call, false, "ETA");
+			goto out;
+		}
+	}
+
+	if (nr_acks > 0) {
+		if (skb_copy_bits(skb, offset, buf.acks, nr_acks) < 0) {
+			rxrpc_proto_abort("XSA", call, 0);
+			goto out;
+		}
+		rxrpc_input_soft_acks(call, buf.acks, first_soft_ack, nr_acks,
+				      &summary);
 	}
 
 	if (call->rxtx_annotations[call->tx_top & RXRPC_RXTX_BUFF_MASK] &
@@ -920,7 +950,9 @@
 				  false, true,
 				  rxrpc_propose_ack_ping_for_lost_reply);
 
-	return rxrpc_congestion_management(call, skb, &summary, acked_serial);
+	rxrpc_congestion_management(call, skb, &summary, acked_serial);
+out:
+	spin_unlock(&call->input_lock);
 }
 
 /*
@@ -933,9 +965,12 @@
 
 	_proto("Rx ACKALL %%%u", sp->hdr.serial);
 
-	rxrpc_rotate_tx_window(call, call->tx_top, &summary);
-	if (test_bit(RXRPC_CALL_TX_LAST, &call->flags))
+	spin_lock(&call->input_lock);
+
+	if (rxrpc_rotate_tx_window(call, call->tx_top, &summary))
 		rxrpc_end_tx_phase(call, false, "ETL");
+
+	spin_unlock(&call->input_lock);
 }
 
 /*
@@ -1018,18 +1053,19 @@
 }
 
 /*
- * Handle a new call on a channel implicitly completing the preceding call on
- * that channel.
+ * Handle a new service call on a channel implicitly completing the preceding
+ * call on that channel.  This does not apply to client conns.
  *
  * TODO: If callNumber > call_id + 1, renegotiate security.
  */
-static void rxrpc_input_implicit_end_call(struct rxrpc_connection *conn,
+static void rxrpc_input_implicit_end_call(struct rxrpc_sock *rx,
+					  struct rxrpc_connection *conn,
 					  struct rxrpc_call *call)
 {
 	switch (READ_ONCE(call->state)) {
 	case RXRPC_CALL_SERVER_AWAIT_ACK:
 		rxrpc_call_completed(call);
-		break;
+		/* Fall through */
 	case RXRPC_CALL_COMPLETE:
 		break;
 	default:
@@ -1037,11 +1073,13 @@
 			set_bit(RXRPC_CALL_EV_ABORT, &call->events);
 			rxrpc_queue_call(call);
 		}
+		trace_rxrpc_improper_term(call);
 		break;
 	}
 
-	trace_rxrpc_improper_term(call);
+	spin_lock(&rx->incoming_lock);
 	__rxrpc_disconnect_call(conn, call);
+	spin_unlock(&rx->incoming_lock);
 	rxrpc_notify_socket(call);
 }
 
@@ -1120,8 +1158,10 @@
  * The socket is locked by the caller and this prevents the socket from being
  * shut down and the local endpoint from going away, thus sk_user_data will not
  * be cleared until this function returns.
+ *
+ * Called with the RCU read lock held from the IP layer via UDP.
  */
-void rxrpc_data_ready(struct sock *udp_sk)
+int rxrpc_input_packet(struct sock *udp_sk, struct sk_buff *skb)
 {
 	struct rxrpc_connection *conn;
 	struct rxrpc_channel *chan;
@@ -1130,38 +1170,17 @@
 	struct rxrpc_local *local = udp_sk->sk_user_data;
 	struct rxrpc_peer *peer = NULL;
 	struct rxrpc_sock *rx = NULL;
-	struct sk_buff *skb;
 	unsigned int channel;
-	int ret, skew = 0;
+	int skew = 0;
 
 	_enter("%p", udp_sk);
 
-	ASSERT(!irqs_disabled());
-
-	skb = skb_recv_udp(udp_sk, 0, 1, &ret);
-	if (!skb) {
-		if (ret == -EAGAIN)
-			return;
-		_debug("UDP socket error %d", ret);
-		return;
-	}
-
 	if (skb->tstamp == 0)
 		skb->tstamp = ktime_get_real();
 
 	rxrpc_new_skb(skb, rxrpc_skb_rx_received);
 
-	_net("recv skb %p", skb);
-
-	/* we'll probably need to checksum it (didn't call sock_recvmsg) */
-	if (skb_checksum_complete(skb)) {
-		rxrpc_free_skb(skb, rxrpc_skb_rx_freed);
-		__UDP_INC_STATS(&init_net, UDP_MIB_INERRORS, 0);
-		_leave(" [CSUM failed]");
-		return;
-	}
-
-	__UDP_INC_STATS(&init_net, UDP_MIB_INDATAGRAMS, 0);
+	skb_pull(skb, sizeof(struct udphdr));
 
 	/* The UDP protocol already released all skb resources;
 	 * we are free to add our own data there.
@@ -1176,11 +1195,13 @@
 		static int lose;
 		if ((lose++ & 7) == 7) {
 			trace_rxrpc_rx_lose(sp);
-			rxrpc_lose_skb(skb, rxrpc_skb_rx_lost);
-			return;
+			rxrpc_free_skb(skb, rxrpc_skb_rx_lost);
+			return 0;
 		}
 	}
 
+	if (skb->tstamp == 0)
+		skb->tstamp = ktime_get_real();
 	trace_rxrpc_rx_packet(sp);
 
 	switch (sp->hdr.type) {
@@ -1234,8 +1255,6 @@
 	if (sp->hdr.serviceId == 0)
 		goto bad_message;
 
-	rcu_read_lock();
-
 	if (rxrpc_to_server(sp)) {
 		/* Weed out packets to services we're not offering.  Packets
 		 * that would begin a call are explicitly rejected and the rest
@@ -1247,7 +1266,7 @@
 			if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
 			    sp->hdr.seq == 1)
 				goto unsupported_service;
-			goto discard_unlock;
+			goto discard;
 		}
 	}
 
@@ -1257,17 +1276,23 @@
 			goto wrong_security;
 
 		if (sp->hdr.serviceId != conn->service_id) {
-			if (!test_bit(RXRPC_CONN_PROBING_FOR_UPGRADE, &conn->flags) ||
-			    conn->service_id != conn->params.service_id)
+			int old_id;
+
+			if (!test_bit(RXRPC_CONN_PROBING_FOR_UPGRADE, &conn->flags))
 				goto reupgrade;
-			conn->service_id = sp->hdr.serviceId;
+			old_id = cmpxchg(&conn->service_id, conn->params.service_id,
+					 sp->hdr.serviceId);
+
+			if (old_id != conn->params.service_id &&
+			    old_id != sp->hdr.serviceId)
+				goto reupgrade;
 		}
 
 		if (sp->hdr.callNumber == 0) {
 			/* Connection-level packet */
 			_debug("CONN %p {%d}", conn, conn->debug_id);
 			rxrpc_post_packet_to_conn(conn, skb);
-			goto out_unlock;
+			goto out;
 		}
 
 		/* Note the serial number skew here */
@@ -1286,19 +1311,19 @@
 
 		/* Ignore really old calls */
 		if (sp->hdr.callNumber < chan->last_call)
-			goto discard_unlock;
+			goto discard;
 
 		if (sp->hdr.callNumber == chan->last_call) {
 			if (chan->call ||
 			    sp->hdr.type == RXRPC_PACKET_TYPE_ABORT)
-				goto discard_unlock;
+				goto discard;
 
 			/* For the previous service call, if completed
 			 * successfully, we discard all further packets.
 			 */
 			if (rxrpc_conn_is_service(conn) &&
 			    chan->last_type == RXRPC_PACKET_TYPE_ACK)
-				goto discard_unlock;
+				goto discard;
 
 			/* But otherwise we need to retransmit the final packet
 			 * from data cached in the connection record.
@@ -1309,18 +1334,16 @@
 						    sp->hdr.serial,
 						    sp->hdr.flags, 0);
 			rxrpc_post_packet_to_conn(conn, skb);
-			goto out_unlock;
+			goto out;
 		}
 
 		call = rcu_dereference(chan->call);
 
 		if (sp->hdr.callNumber > chan->call_id) {
-			if (rxrpc_to_client(sp)) {
-				rcu_read_unlock();
+			if (rxrpc_to_client(sp))
 				goto reject_packet;
-			}
 			if (call)
-				rxrpc_input_implicit_end_call(conn, call);
+				rxrpc_input_implicit_end_call(rx, conn, call);
 			call = NULL;
 		}
 
@@ -1337,55 +1360,42 @@
 	if (!call || atomic_read(&call->usage) == 0) {
 		if (rxrpc_to_client(sp) ||
 		    sp->hdr.type != RXRPC_PACKET_TYPE_DATA)
-			goto bad_message_unlock;
+			goto bad_message;
 		if (sp->hdr.seq != 1)
-			goto discard_unlock;
-		call = rxrpc_new_incoming_call(local, rx, peer, conn, skb);
-		if (!call) {
-			rcu_read_unlock();
+			goto discard;
+		call = rxrpc_new_incoming_call(local, rx, skb);
+		if (!call)
 			goto reject_packet;
-		}
 		rxrpc_send_ping(call, skb, skew);
 		mutex_unlock(&call->user_mutex);
 	}
 
 	rxrpc_input_call_packet(call, skb, skew);
-	goto discard_unlock;
+	goto discard;
 
-discard_unlock:
-	rcu_read_unlock();
 discard:
 	rxrpc_free_skb(skb, rxrpc_skb_rx_freed);
 out:
 	trace_rxrpc_rx_done(0, 0);
-	return;
-
-out_unlock:
-	rcu_read_unlock();
-	goto out;
+	return 0;
 
 wrong_security:
-	rcu_read_unlock();
 	trace_rxrpc_abort(0, "SEC", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
 			  RXKADINCONSISTENCY, EBADMSG);
 	skb->priority = RXKADINCONSISTENCY;
 	goto post_abort;
 
 unsupported_service:
-	rcu_read_unlock();
 	trace_rxrpc_abort(0, "INV", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
 			  RX_INVALID_OPERATION, EOPNOTSUPP);
 	skb->priority = RX_INVALID_OPERATION;
 	goto post_abort;
 
 reupgrade:
-	rcu_read_unlock();
 	trace_rxrpc_abort(0, "UPG", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
 			  RX_PROTOCOL_ERROR, EBADMSG);
 	goto protocol_error;
 
-bad_message_unlock:
-	rcu_read_unlock();
 bad_message:
 	trace_rxrpc_abort(0, "BAD", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
 			  RX_PROTOCOL_ERROR, EBADMSG);
@@ -1397,4 +1407,5 @@
 	trace_rxrpc_rx_done(skb->mark, skb->priority);
 	rxrpc_reject_packet(local, skb);
 	_leave(" [badmsg]");
+	return 0;
 }
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 94d234e..cad0691 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -19,6 +19,7 @@
 #include <linux/ip.h>
 #include <linux/hashtable.h>
 #include <net/sock.h>
+#include <net/udp.h>
 #include <net/af_rxrpc.h>
 #include "ar-internal.h"
 
@@ -108,7 +109,7 @@
  */
 static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
 {
-	struct sock *sock;
+	struct sock *usk;
 	int ret, opt;
 
 	_enter("%p{%d,%d}",
@@ -122,6 +123,28 @@
 		return ret;
 	}
 
+	/* set the socket up */
+	usk = local->socket->sk;
+	inet_sk(usk)->mc_loop = 0;
+
+	/* Enable CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE conversion */
+	inet_inc_convert_csum(usk);
+
+	rcu_assign_sk_user_data(usk, local);
+
+	udp_sk(usk)->encap_type = UDP_ENCAP_RXRPC;
+	udp_sk(usk)->encap_rcv = rxrpc_input_packet;
+	udp_sk(usk)->encap_destroy = NULL;
+	udp_sk(usk)->gro_receive = NULL;
+	udp_sk(usk)->gro_complete = NULL;
+
+	udp_encap_enable();
+#if IS_ENABLED(CONFIG_IPV6)
+	if (local->srx.transport.family == AF_INET6)
+		udpv6_encap_enable();
+#endif
+	usk->sk_error_report = rxrpc_error_report;
+
 	/* if a local address was supplied then bind it */
 	if (local->srx.transport_len > sizeof(sa_family_t)) {
 		_debug("bind");
@@ -191,11 +214,6 @@
 		BUG();
 	}
 
-	/* set the socket up */
-	sock = local->socket->sk;
-	sock->sk_user_data	= local;
-	sock->sk_data_ready	= rxrpc_data_ready;
-	sock->sk_error_report	= rxrpc_error_report;
 	_leave(" = 0");
 	return 0;
 
diff --git a/net/rxrpc/peer_event.c b/net/rxrpc/peer_event.c
index f3e6fc6..05b51bd 100644
--- a/net/rxrpc/peer_event.c
+++ b/net/rxrpc/peer_event.c
@@ -301,6 +301,8 @@
 	if (rtt < 0)
 		return;
 
+	spin_lock(&peer->rtt_input_lock);
+
 	/* Replace the oldest datum in the RTT buffer */
 	sum -= peer->rtt_cache[cursor];
 	sum += rtt;
@@ -312,6 +314,8 @@
 		peer->rtt_usage = usage;
 	}
 
+	spin_unlock(&peer->rtt_input_lock);
+
 	/* Now recalculate the average */
 	if (usage == RXRPC_RTT_CACHE_SIZE) {
 		avg = sum / RXRPC_RTT_CACHE_SIZE;
@@ -320,6 +324,7 @@
 		do_div(avg, usage);
 	}
 
+	/* Don't need to update this under lock */
 	peer->rtt = avg;
 	trace_rxrpc_rtt_rx(call, why, send_serial, resp_serial, rtt,
 			   usage, avg);
diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c
index 01a9feb..5691b7d 100644
--- a/net/rxrpc/peer_object.c
+++ b/net/rxrpc/peer_object.c
@@ -153,8 +153,10 @@
  * assess the MTU size for the network interface through which this peer is
  * reached
  */
-static void rxrpc_assess_MTU_size(struct rxrpc_peer *peer)
+static void rxrpc_assess_MTU_size(struct rxrpc_sock *rx,
+				  struct rxrpc_peer *peer)
 {
+	struct net *net = sock_net(&rx->sk);
 	struct dst_entry *dst;
 	struct rtable *rt;
 	struct flowi fl;
@@ -169,7 +171,7 @@
 	switch (peer->srx.transport.family) {
 	case AF_INET:
 		rt = ip_route_output_ports(
-			&init_net, fl4, NULL,
+			net, fl4, NULL,
 			peer->srx.transport.sin.sin_addr.s_addr, 0,
 			htons(7000), htons(7001), IPPROTO_UDP, 0, 0);
 		if (IS_ERR(rt)) {
@@ -188,7 +190,7 @@
 		       sizeof(struct in6_addr));
 		fl6->fl6_dport = htons(7001);
 		fl6->fl6_sport = htons(7000);
-		dst = ip6_route_output(&init_net, NULL, fl6);
+		dst = ip6_route_output(net, NULL, fl6);
 		if (dst->error) {
 			_leave(" [route err %d]", dst->error);
 			return;
@@ -223,6 +225,7 @@
 		peer->service_conns = RB_ROOT;
 		seqlock_init(&peer->service_conn_lock);
 		spin_lock_init(&peer->lock);
+		spin_lock_init(&peer->rtt_input_lock);
 		peer->debug_id = atomic_inc_return(&rxrpc_debug_id);
 
 		if (RXRPC_TX_SMSS > 2190)
@@ -240,10 +243,11 @@
 /*
  * Initialise peer record.
  */
-static void rxrpc_init_peer(struct rxrpc_peer *peer, unsigned long hash_key)
+static void rxrpc_init_peer(struct rxrpc_sock *rx, struct rxrpc_peer *peer,
+			    unsigned long hash_key)
 {
 	peer->hash_key = hash_key;
-	rxrpc_assess_MTU_size(peer);
+	rxrpc_assess_MTU_size(rx, peer);
 	peer->mtu = peer->if_mtu;
 	peer->rtt_last_req = ktime_get_real();
 
@@ -275,7 +279,8 @@
 /*
  * Set up a new peer.
  */
-static struct rxrpc_peer *rxrpc_create_peer(struct rxrpc_local *local,
+static struct rxrpc_peer *rxrpc_create_peer(struct rxrpc_sock *rx,
+					    struct rxrpc_local *local,
 					    struct sockaddr_rxrpc *srx,
 					    unsigned long hash_key,
 					    gfp_t gfp)
@@ -287,7 +292,7 @@
 	peer = rxrpc_alloc_peer(local, gfp);
 	if (peer) {
 		memcpy(&peer->srx, srx, sizeof(*srx));
-		rxrpc_init_peer(peer, hash_key);
+		rxrpc_init_peer(rx, peer, hash_key);
 	}
 
 	_leave(" = %p", peer);
@@ -299,14 +304,15 @@
  * since we've already done a search in the list from the non-reentrant context
  * (the data_ready handler) that is the only place we can add new peers.
  */
-void rxrpc_new_incoming_peer(struct rxrpc_local *local, struct rxrpc_peer *peer)
+void rxrpc_new_incoming_peer(struct rxrpc_sock *rx, struct rxrpc_local *local,
+			     struct rxrpc_peer *peer)
 {
 	struct rxrpc_net *rxnet = local->rxnet;
 	unsigned long hash_key;
 
 	hash_key = rxrpc_peer_hash_key(local, &peer->srx);
 	peer->local = local;
-	rxrpc_init_peer(peer, hash_key);
+	rxrpc_init_peer(rx, peer, hash_key);
 
 	spin_lock(&rxnet->peer_hash_lock);
 	hash_add_rcu(rxnet->peer_hash, &peer->hash_link, hash_key);
@@ -317,7 +323,8 @@
 /*
  * obtain a remote transport endpoint for the specified address
  */
-struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local,
+struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *rx,
+				     struct rxrpc_local *local,
 				     struct sockaddr_rxrpc *srx, gfp_t gfp)
 {
 	struct rxrpc_peer *peer, *candidate;
@@ -337,7 +344,7 @@
 		/* The peer is not yet present in hash - create a candidate
 		 * for a new record and then redo the search.
 		 */
-		candidate = rxrpc_create_peer(local, srx, hash_key, gfp);
+		candidate = rxrpc_create_peer(rx, local, srx, hash_key, gfp);
 		if (!candidate) {
 			_leave(" = NULL [nomem]");
 			return NULL;
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index f218ccf1..b2c3406 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -398,6 +398,7 @@
 	rcu_assign_pointer(tp_c->hlist, root_ht);
 	root_ht->tp_c = tp_c;
 
+	root_ht->refcnt++;
 	rcu_assign_pointer(tp->root, root_ht);
 	tp->data = tp_c;
 	return 0;
@@ -610,7 +611,7 @@
 	struct tc_u_hnode __rcu **hn;
 	struct tc_u_hnode *phn;
 
-	WARN_ON(ht->refcnt);
+	WARN_ON(--ht->refcnt);
 
 	u32_clear_hnode(tp, ht, extack);
 
@@ -649,7 +650,7 @@
 
 	WARN_ON(root_ht == NULL);
 
-	if (root_ht && --root_ht->refcnt == 0)
+	if (root_ht && --root_ht->refcnt == 1)
 		u32_destroy_hnode(tp, root_ht, extack);
 
 	if (--tp_c->refcnt == 0) {
@@ -698,7 +699,6 @@
 	}
 
 	if (ht->refcnt == 1) {
-		ht->refcnt--;
 		u32_destroy_hnode(tp, ht, extack);
 	} else {
 		NL_SET_ERR_MSG_MOD(extack, "Can not delete in-use filter");
@@ -708,11 +708,11 @@
 out:
 	*last = true;
 	if (root_ht) {
-		if (root_ht->refcnt > 1) {
+		if (root_ht->refcnt > 2) {
 			*last = false;
 			goto ret;
 		}
-		if (root_ht->refcnt == 1) {
+		if (root_ht->refcnt == 2) {
 			if (!ht_empty(root_ht)) {
 				*last = false;
 				goto ret;
diff --git a/net/tipc/link.c b/net/tipc/link.c
index fb886b5..f6552e4 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -477,6 +477,8 @@
 	l->in_session = false;
 	l->bearer_id = bearer_id;
 	l->tolerance = tolerance;
+	if (bc_rcvlink)
+		bc_rcvlink->tolerance = tolerance;
 	l->net_plane = net_plane;
 	l->advertised_mtu = mtu;
 	l->mtu = mtu;
@@ -843,15 +845,22 @@
 
 void tipc_link_reset(struct tipc_link *l)
 {
+	struct sk_buff_head list;
+
+	__skb_queue_head_init(&list);
+
 	l->in_session = false;
 	l->session++;
 	l->mtu = l->advertised_mtu;
+
 	spin_lock_bh(&l->wakeupq.lock);
-	spin_lock_bh(&l->inputq->lock);
-	skb_queue_splice_init(&l->wakeupq, l->inputq);
-	spin_unlock_bh(&l->inputq->lock);
+	skb_queue_splice_init(&l->wakeupq, &list);
 	spin_unlock_bh(&l->wakeupq.lock);
 
+	spin_lock_bh(&l->inputq->lock);
+	skb_queue_splice_init(&list, l->inputq);
+	spin_unlock_bh(&l->inputq->lock);
+
 	__skb_queue_purge(&l->transmq);
 	__skb_queue_purge(&l->deferdq);
 	__skb_queue_purge(&l->backlogq);
@@ -1031,7 +1040,7 @@
 	/* Detect repeated retransmit failures on same packet */
 	if (r->last_retransm != buf_seqno(skb)) {
 		r->last_retransm = buf_seqno(skb);
-		r->stale_limit = jiffies + msecs_to_jiffies(l->tolerance);
+		r->stale_limit = jiffies + msecs_to_jiffies(r->tolerance);
 	} else if (++r->stale_cnt > 99 && time_after(jiffies, r->stale_limit)) {
 		link_retransmit_failure(l, skb);
 		if (link_is_bc_sndlink(l))
@@ -1576,9 +1585,10 @@
 		strncpy(if_name, data, TIPC_MAX_IF_NAME);
 
 		/* Update own tolerance if peer indicates a non-zero value */
-		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL))
+		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
 			l->tolerance = peers_tol;
-
+			l->bc_rcvlink->tolerance = peers_tol;
+		}
 		/* Update own priority if peer's priority is higher */
 		if (in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI))
 			l->priority = peers_prio;
@@ -1604,9 +1614,10 @@
 		l->rcv_nxt_state = msg_seqno(hdr) + 1;
 
 		/* Update own tolerance if peer indicates a non-zero value */
-		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL))
+		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
 			l->tolerance = peers_tol;
-
+			l->bc_rcvlink->tolerance = peers_tol;
+		}
 		/* Update own prio if peer indicates a different value */
 		if ((peers_prio != l->priority) &&
 		    in_range(peers_prio, 1, TIPC_MAX_LINK_PRI)) {
@@ -2223,6 +2234,8 @@
 			     struct sk_buff_head *xmitq)
 {
 	l->tolerance = tol;
+	if (l->bc_rcvlink)
+		l->bc_rcvlink->tolerance = tol;
 	if (link_is_up(l))
 		tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq);
 }
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b6f99b0..49810fd 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1196,6 +1196,7 @@
  * @skb: pointer to message buffer.
  */
 static void tipc_sk_conn_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
+				   struct sk_buff_head *inputq,
 				   struct sk_buff_head *xmitq)
 {
 	struct tipc_msg *hdr = buf_msg(skb);
@@ -1213,7 +1214,16 @@
 		tipc_node_remove_conn(sock_net(sk), tsk_peer_node(tsk),
 				      tsk_peer_port(tsk));
 		sk->sk_state_change(sk);
-		goto exit;
+
+		/* State change is ignored if socket already awake,
+		 * - convert msg to abort msg and add to inqueue
+		 */
+		msg_set_user(hdr, TIPC_CRITICAL_IMPORTANCE);
+		msg_set_type(hdr, TIPC_CONN_MSG);
+		msg_set_size(hdr, BASIC_H_SIZE);
+		msg_set_hdr_sz(hdr, BASIC_H_SIZE);
+		__skb_queue_tail(inputq, skb);
+		return;
 	}
 
 	tsk->probe_unacked = false;
@@ -1936,7 +1946,7 @@
 
 	switch (msg_user(hdr)) {
 	case CONN_MANAGER:
-		tipc_sk_conn_proto_rcv(tsk, skb, xmitq);
+		tipc_sk_conn_proto_rcv(tsk, skb, inputq, xmitq);
 		return;
 	case SOCK_WAKEUP:
 		tipc_dest_del(&tsk->cong_links, msg_orignode(hdr), 0);
diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh
index 08c341b..e101af5 100755
--- a/tools/testing/selftests/net/rtnetlink.sh
+++ b/tools/testing/selftests/net/rtnetlink.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # This test is for checking rtnetlink callpaths, and get as much coverage as possible.
 #
diff --git a/tools/testing/selftests/net/udpgso_bench.sh b/tools/testing/selftests/net/udpgso_bench.sh
index 850767b..99e537a 100755
--- a/tools/testing/selftests/net/udpgso_bench.sh
+++ b/tools/testing/selftests/net/udpgso_bench.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
 # Run a series of udpgso benchmarks