Merge tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Paolo Abeni:
 "Core:

   - Refactor the forward memory allocation to better cope with memory
     pressure with many open sockets, moving from a per socket cache to
     a per-CPU one

   - Replace rwlocks with RCU for better fairness in ping, raw sockets
     and IP multicast router.

   - Network-side support for IO uring zero-copy send.

   - A few skb drop reason improvements, including codegen the source
     file with string mapping instead of using macro magic.

   - Rename reference tracking helpers to a more consistent netdev_*
     schema.

   - Adapt u64_stats_t type to address load/store tearing issues.

   - Refine debug helper usage to reduce the log noise caused by bots.

  BPF:

   - Improve socket map performance, avoiding skb cloning on read
     operation.

   - Add support for 64 bits enum, to match types exposed by kernel.

   - Introduce support for sleepable uprobes program.

   - Introduce support for enum textual representation in libbpf.

   - New helpers to implement synproxy with eBPF/XDP.

   - Improve loop performances, inlining indirect calls when possible.

   - Removed all the deprecated libbpf APIs.

   - Implement new eBPF-based LSM flavor.

   - Add type match support, which allow accurate queries to the eBPF
     used types.

   - A few TCP congetsion control framework usability improvements.

   - Add new infrastructure to manipulate CT entries via eBPF programs.

   - Allow for livepatch (KLP) and BPF trampolines to attach to the same
     kernel function.

  Protocols:

   - Introduce per network namespace lookup tables for unix sockets,
     increasing scalability and reducing contention.

   - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.

   - Add support to forciby close TIME_WAIT TCP sockets via user-space
     tools.

   - Significant performance improvement for the TLS 1.3 receive path,
     both for zero-copy and not-zero-copy.

   - Support for changing the initial MTPCP subflow priority/backup
     status

   - Introduce virtually contingus buffers for sockets over RDMA, to
     cope better with memory pressure.

   - Extend CAN ethtool support with timestamping capabilities

   - Refactor CAN build infrastructure to allow building only the needed
     features.

  Driver API:

   - Remove devlink mutex to allow parallel commands on multiple links.

   - Add support for pause stats in distributed switch.

   - Implement devlink helpers to query and flash line cards.

   - New helper for phy mode to register conversion.

  New hardware / drivers:

   - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.

   - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.

   - Ethernet DSA driver for the Microchip LAN937x switch.

   - Ethernet PHY driver for the Aquantia AQR113C EPHY.

   - CAN driver for the OBD-II ELM327 interface.

   - CAN driver for RZ/N1 SJA1000 CAN controller.

   - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.

  Drivers:

   - Intel Ethernet NICs:
      - i40e: add support for vlan pruning
      - i40e: add support for XDP framented packets
      - ice: improved vlan offload support
      - ice: add support for PPPoE offload

   - Mellanox Ethernet (mlx5)
      - refactor packet steering offload for performance and scalability
      - extend support for TC offload
      - refactor devlink code to clean-up the locking schema
      - support stacked vlans for bridge offloads
      - use TLS objects pool to improve connection rate

   - Netronome Ethernet NICs (nfp):
      - extend support for IPv6 fields mangling offload
      - add support for vepa mode in HW bridge
      - better support for virtio data path acceleration (VDPA)
      - enable TSO by default

   - Microsoft vNIC driver (mana)
      - add support for XDP redirect

   - Others Ethernet drivers:
      - bonding: add per-port priority support
      - microchip lan743x: extend phy support
      - Fungible funeth: support UDP segmentation offload and XDP xmit
      - Solarflare EF100: add support for virtual function representors
      - MediaTek SoC: add XDP support

   - Mellanox Ethernet/IB switch (mlxsw):
      - dropped support for unreleased H/W (XM router).
      - improved stats accuracy
      - unified bridge model coversion improving scalability (parts 1-6)
      - support for PTP in Spectrum-2 asics

   - Broadcom PHYs
      - add PTP support for BCM54210E
      - add support for the BCM53128 internal PHY

   - Marvell Ethernet switches (prestera):
      - implement support for multicast forwarding offload

   - Embedded Ethernet switches:
      - refactor OcteonTx MAC filter for better scalability
      - improve TC H/W offload for the Felix driver
      - refactor the Microchip ksz8 and ksz9477 drivers to share the
        probe code (parts 1, 2), add support for phylink mac
        configuration

   - Other WiFi:
      - Microchip wilc1000: diable WEP support and enable WPA3
      - Atheros ath10k: encapsulation offload support

  Old code removal:

   - Neterion vxge ethernet driver: this is untouched since more than 10 years"

* tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1890 commits)
  doc: sfp-phylink: Fix a broken reference
  wireguard: selftests: support UML
  wireguard: allowedips: don't corrupt stack when detecting overflow
  wireguard: selftests: update config fragments
  wireguard: ratelimiter: use hrtimer in selftest
  net/mlx5e: xsk: Discard unaligned XSK frames on striding RQ
  net: usb: ax88179_178a: Bind only to vendor-specific interface
  selftests: net: fix IOAM test skip return code
  net: usb: make USB_RTL8153_ECM non user configurable
  net: marvell: prestera: remove reduntant code
  octeontx2-pf: Reduce minimum mtu size to 60
  net: devlink: Fix missing mutex_unlock() call
  net/tls: Remove redundant workqueue flush before destroy
  net: txgbe: Fix an error handling path in txgbe_probe()
  net: dsa: Fix spelling mistakes and cleanup code
  Documentation: devlink: add add devlink-selftests to the table of contents
  dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
  net: ionic: fix error check for vlan flags in ionic_set_nic_features()
  net: ice: fix error NETIF_F_HW_VLAN_CTAG_FILTER check in ice_vsi_sync_fltr()
  nfp: flower: add support for tunnel offload without key ID
  ...

5 files changed, 134 insertions, 127 deletions

diff --git a/drivers/net/netdevsim/bpf.c b/drivers/net/netdevsim/bpf.c
index a43820212932..50854265864d 100644
--- a/drivers/net/netdevsim/bpf.c
+++ b/drivers/net/netdevsim/bpf.c
@@ -351,10 +351,12 @@ nsim_map_alloc_elem(struct bpf_offloaded_map *offmap, unsigned int idx)
 {
 	struct nsim_bpf_bound_map *nmap = offmap->dev_priv;
 
-	nmap->entry[idx].key = kmalloc(offmap->map.key_size, GFP_USER);
+	nmap->entry[idx].key = kmalloc(offmap->map.key_size,
+				       GFP_KERNEL_ACCOUNT | __GFP_NOWARN);
 	if (!nmap->entry[idx].key)
 		return -ENOMEM;
-	nmap->entry[idx].value = kmalloc(offmap->map.value_size, GFP_USER);
+	nmap->entry[idx].value = kmalloc(offmap->map.value_size,
+					 GFP_KERNEL_ACCOUNT | __GFP_NOWARN);
 	if (!nmap->entry[idx].value) {
 		kfree(nmap->entry[idx].key);
 		nmap->entry[idx].key = NULL;
@@ -496,7 +498,7 @@ nsim_bpf_map_alloc(struct netdevsim *ns, struct bpf_offloaded_map *offmap)
 	if (offmap->map.map_flags)
 		return -EINVAL;
 
-	nmap = kzalloc(sizeof(*nmap), GFP_USER);
+	nmap = kzalloc(sizeof(*nmap), GFP_KERNEL_ACCOUNT);
 	if (!nmap)
 		return -ENOMEM;
 
diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c
index 25cb2e600d53..b5f4df1a07a3 100644
--- a/drivers/net/netdevsim/bus.c
+++ b/drivers/net/netdevsim/bus.c
@@ -72,16 +72,7 @@ new_port_store(struct device *dev, struct device_attribute *attr,
 	if (ret)
 		return ret;
 
-	if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock))
-		return -EBUSY;
-
-	if (nsim_bus_dev->in_reload) {
-		mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
-		return -EBUSY;
-	}
-
 	ret = nsim_drv_port_add(nsim_bus_dev, NSIM_DEV_PORT_TYPE_PF, port_index);
-	mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 	return ret ? ret : count;
 }
 
@@ -102,16 +93,7 @@ del_port_store(struct device *dev, struct device_attribute *attr,
 	if (ret)
 		return ret;
 
-	if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock))
-		return -EBUSY;
-
-	if (nsim_bus_dev->in_reload) {
-		mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
-		return -EBUSY;
-	}
-
 	ret = nsim_drv_port_del(nsim_bus_dev, NSIM_DEV_PORT_TYPE_PF, port_index);
-	mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 	return ret ? ret : count;
 }
 
@@ -298,7 +280,6 @@ nsim_bus_dev_new(unsigned int id, unsigned int port_count, unsigned int num_queu
 	nsim_bus_dev->num_queues = num_queues;
 	nsim_bus_dev->initial_net = current->nsproxy->net_ns;
 	nsim_bus_dev->max_vfs = NSIM_BUS_DEV_MAX_VFS;
-	mutex_init(&nsim_bus_dev->nsim_bus_reload_lock);
 	/* Disallow using nsim_bus_dev */
 	smp_store_release(&nsim_bus_dev->init, false);
 
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 57a3ac893792..e88f783c297e 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -436,62 +436,62 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 	int err;
 
 	/* Resources for IPv4 */
-	err = devlink_resource_register(devlink, "IPv4", (u64)-1,
-					NSIM_RESOURCE_IPV4,
-					DEVLINK_RESOURCE_ID_PARENT_TOP,
-					&params);
+	err = devl_resource_register(devlink, "IPv4", (u64)-1,
+				     NSIM_RESOURCE_IPV4,
+				     DEVLINK_RESOURCE_ID_PARENT_TOP,
+				     &params);
 	if (err) {
 		pr_err("Failed to register IPv4 top resource\n");
 		goto out;
 	}
 
-	err = devlink_resource_register(devlink, "fib", (u64)-1,
-					NSIM_RESOURCE_IPV4_FIB,
-					NSIM_RESOURCE_IPV4, &params);
+	err = devl_resource_register(devlink, "fib", (u64)-1,
+				     NSIM_RESOURCE_IPV4_FIB,
+				     NSIM_RESOURCE_IPV4, &params);
 	if (err) {
 		pr_err("Failed to register IPv4 FIB resource\n");
 		return err;
 	}
 
-	err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
-					NSIM_RESOURCE_IPV4_FIB_RULES,
-					NSIM_RESOURCE_IPV4, &params);
+	err = devl_resource_register(devlink, "fib-rules", (u64)-1,
+				     NSIM_RESOURCE_IPV4_FIB_RULES,
+				     NSIM_RESOURCE_IPV4, &params);
 	if (err) {
 		pr_err("Failed to register IPv4 FIB rules resource\n");
 		return err;
 	}
 
 	/* Resources for IPv6 */
-	err = devlink_resource_register(devlink, "IPv6", (u64)-1,
-					NSIM_RESOURCE_IPV6,
-					DEVLINK_RESOURCE_ID_PARENT_TOP,
-					&params);
+	err = devl_resource_register(devlink, "IPv6", (u64)-1,
+				     NSIM_RESOURCE_IPV6,
+				     DEVLINK_RESOURCE_ID_PARENT_TOP,
+				     &params);
 	if (err) {
 		pr_err("Failed to register IPv6 top resource\n");
 		goto out;
 	}
 
-	err = devlink_resource_register(devlink, "fib", (u64)-1,
-					NSIM_RESOURCE_IPV6_FIB,
-					NSIM_RESOURCE_IPV6, &params);
+	err = devl_resource_register(devlink, "fib", (u64)-1,
+				     NSIM_RESOURCE_IPV6_FIB,
+				     NSIM_RESOURCE_IPV6, &params);
 	if (err) {
 		pr_err("Failed to register IPv6 FIB resource\n");
 		return err;
 	}
 
-	err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
-					NSIM_RESOURCE_IPV6_FIB_RULES,
-					NSIM_RESOURCE_IPV6, &params);
+	err = devl_resource_register(devlink, "fib-rules", (u64)-1,
+				     NSIM_RESOURCE_IPV6_FIB_RULES,
+				     NSIM_RESOURCE_IPV6, &params);
 	if (err) {
 		pr_err("Failed to register IPv6 FIB rules resource\n");
 		return err;
 	}
 
 	/* Resources for nexthops */
-	err = devlink_resource_register(devlink, "nexthops", (u64)-1,
-					NSIM_RESOURCE_NEXTHOPS,
-					DEVLINK_RESOURCE_ID_PARENT_TOP,
-					&params);
+	err = devl_resource_register(devlink, "nexthops", (u64)-1,
+				     NSIM_RESOURCE_NEXTHOPS,
+				     DEVLINK_RESOURCE_ID_PARENT_TOP,
+				     &params);
 
 out:
 	return err;
@@ -557,15 +557,15 @@ static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev,
 				      struct devlink *devlink)
 {
 	nsim_dev->dummy_region =
-		devlink_region_create(devlink, &dummy_region_ops,
-				      NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX,
-				      NSIM_DEV_DUMMY_REGION_SIZE);
+		devl_region_create(devlink, &dummy_region_ops,
+				   NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX,
+				   NSIM_DEV_DUMMY_REGION_SIZE);
 	return PTR_ERR_OR_ZERO(nsim_dev->dummy_region);
 }
 
 static void nsim_dev_dummy_region_exit(struct nsim_dev *nsim_dev)
 {
-	devlink_region_destroy(nsim_dev->dummy_region);
+	devl_region_destroy(nsim_dev->dummy_region);
 }
 
 static int
@@ -832,7 +832,11 @@ static void nsim_dev_trap_report_work(struct work_struct *work)
 	/* For each running port and enabled packet trap, generate a UDP
 	 * packet with a random 5-tuple and report it.
 	 */
-	devl_lock(priv_to_devlink(nsim_dev));
+	if (!devl_trylock(priv_to_devlink(nsim_dev))) {
+		schedule_delayed_work(&nsim_dev->trap_data->trap_report_dw, 0);
+		return;
+	}
+
 	list_for_each_entry(nsim_dev_port, &nsim_dev->port_list, list) {
 		if (!netif_running(nsim_dev_port->ns->netdev))
 			continue;
@@ -880,18 +884,18 @@ static int nsim_dev_traps_init(struct devlink *devlink)
 	nsim_trap_data->nsim_dev = nsim_dev;
 	nsim_dev->trap_data = nsim_trap_data;
 
-	err = devlink_trap_policers_register(devlink, nsim_trap_policers_arr,
-					     policers_count);
+	err = devl_trap_policers_register(devlink, nsim_trap_policers_arr,
+					  policers_count);
 	if (err)
 		goto err_trap_policers_cnt_free;
 
-	err = devlink_trap_groups_register(devlink, nsim_trap_groups_arr,
-					   ARRAY_SIZE(nsim_trap_groups_arr));
+	err = devl_trap_groups_register(devlink, nsim_trap_groups_arr,
+					ARRAY_SIZE(nsim_trap_groups_arr));
 	if (err)
 		goto err_trap_policers_unregister;
 
-	err = devlink_traps_register(devlink, nsim_traps_arr,
-				     ARRAY_SIZE(nsim_traps_arr), NULL);
+	err = devl_traps_register(devlink, nsim_traps_arr,
+				  ARRAY_SIZE(nsim_traps_arr), NULL);
 	if (err)
 		goto err_trap_groups_unregister;
 
@@ -903,11 +907,11 @@ static int nsim_dev_traps_init(struct devlink *devlink)
 	return 0;
 
 err_trap_groups_unregister:
-	devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr,
-				       ARRAY_SIZE(nsim_trap_groups_arr));
+	devl_trap_groups_unregister(devlink, nsim_trap_groups_arr,
+				    ARRAY_SIZE(nsim_trap_groups_arr));
 err_trap_policers_unregister:
-	devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr,
-					 ARRAY_SIZE(nsim_trap_policers_arr));
+	devl_trap_policers_unregister(devlink, nsim_trap_policers_arr,
+				      ARRAY_SIZE(nsim_trap_policers_arr));
 err_trap_policers_cnt_free:
 	kfree(nsim_trap_data->trap_policers_cnt_arr);
 err_trap_items_free:
@@ -923,12 +927,12 @@ static void nsim_dev_traps_exit(struct devlink *devlink)
 
 	/* caution, trap work takes devlink lock */
 	cancel_delayed_work_sync(&nsim_dev->trap_data->trap_report_dw);
-	devlink_traps_unregister(devlink, nsim_traps_arr,
-				 ARRAY_SIZE(nsim_traps_arr));
-	devlink_trap_groups_unregister(devlink, nsim_trap_groups_arr,
-				       ARRAY_SIZE(nsim_trap_groups_arr));
-	devlink_trap_policers_unregister(devlink, nsim_trap_policers_arr,
-					 ARRAY_SIZE(nsim_trap_policers_arr));
+	devl_traps_unregister(devlink, nsim_traps_arr,
+			      ARRAY_SIZE(nsim_traps_arr));
+	devl_trap_groups_unregister(devlink, nsim_trap_groups_arr,
+				    ARRAY_SIZE(nsim_trap_groups_arr));
+	devl_trap_policers_unregister(devlink, nsim_trap_policers_arr,
+				      ARRAY_SIZE(nsim_trap_policers_arr));
 	kfree(nsim_dev->trap_data->trap_policers_cnt_arr);
 	kfree(nsim_dev->trap_data->trap_items_arr);
 	kfree(nsim_dev->trap_data);
@@ -943,24 +947,16 @@ static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change,
 				struct netlink_ext_ack *extack)
 {
 	struct nsim_dev *nsim_dev = devlink_priv(devlink);
-	struct nsim_bus_dev *nsim_bus_dev;
-
-	nsim_bus_dev = nsim_dev->nsim_bus_dev;
-	if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock))
-		return -EOPNOTSUPP;
 
 	if (nsim_dev->dont_allow_reload) {
 		/* For testing purposes, user set debugfs dont_allow_reload
 		 * value to true. So forbid it.
 		 */
 		NL_SET_ERR_MSG_MOD(extack, "User forbid the reload for testing purposes");
-		mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 		return -EOPNOTSUPP;
 	}
-	nsim_bus_dev->in_reload = true;
 
 	nsim_dev_reload_destroy(nsim_dev);
-	mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 	return 0;
 }
 
@@ -969,25 +965,18 @@ static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_actio
 			      struct netlink_ext_ack *extack)
 {
 	struct nsim_dev *nsim_dev = devlink_priv(devlink);
-	struct nsim_bus_dev *nsim_bus_dev;
 	int ret;
 
-	nsim_bus_dev = nsim_dev->nsim_bus_dev;
-	mutex_lock(&nsim_bus_dev->nsim_bus_reload_lock);
-	nsim_bus_dev->in_reload = false;
-
 	if (nsim_dev->fail_reload) {
 		/* For testing purposes, user set debugfs fail_reload
 		 * value to true. Fail right away.
 		 */
 		NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes");
-		mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 		return -EINVAL;
 	}
 
 	*actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
 	ret = nsim_dev_reload_create(nsim_dev, extack);
-	mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock);
 	return ret;
 }
 
@@ -1434,11 +1423,9 @@ static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
 {
 	struct nsim_dev_port *nsim_dev_port, *tmp;
 
-	devl_lock(priv_to_devlink(nsim_dev));
 	list_for_each_entry_safe(nsim_dev_port, tmp,
 				 &nsim_dev->port_list, list)
 		__nsim_dev_port_del(nsim_dev_port);
-	devl_unlock(priv_to_devlink(nsim_dev));
 }
 
 static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
@@ -1447,9 +1434,7 @@ static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
 	int i, err;
 
 	for (i = 0; i < port_count; i++) {
-		devl_lock(priv_to_devlink(nsim_dev));
 		err = __nsim_dev_port_add(nsim_dev, NSIM_DEV_PORT_TYPE_PF, i);
-		devl_unlock(priv_to_devlink(nsim_dev));
 		if (err)
 			goto err_port_del_all;
 	}
@@ -1537,6 +1522,7 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
 				 nsim_bus_dev->initial_net, &nsim_bus_dev->dev);
 	if (!devlink)
 		return -ENOMEM;
+	devl_lock(devlink);
 	nsim_dev = devlink_priv(devlink);
 	nsim_dev->nsim_bus_dev = nsim_bus_dev;
 	nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
@@ -1555,7 +1541,7 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
 				      GFP_KERNEL | __GFP_NOWARN);
 	if (!nsim_dev->vfconfigs) {
 		err = -ENOMEM;
-		goto err_devlink_free;
+		goto err_devlink_unlock;
 	}
 
 	err = nsim_dev_resources_register(devlink);
@@ -1608,6 +1594,7 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
 
 	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
 	devlink_set_features(devlink, DEVLINK_F_RELOAD);
+	devl_unlock(devlink);
 	devlink_register(devlink);
 	return 0;
 
@@ -1631,10 +1618,11 @@ err_params_unregister:
 	devlink_params_unregister(devlink, nsim_devlink_params,
 				  ARRAY_SIZE(nsim_devlink_params));
 err_dl_unregister:
-	devlink_resources_unregister(devlink);
+	devl_resources_unregister(devlink);
 err_vfc_free:
 	kfree(nsim_dev->vfconfigs);
-err_devlink_free:
+err_devlink_unlock:
+	devl_unlock(devlink);
 	devlink_free(devlink);
 	dev_set_drvdata(&nsim_bus_dev->dev, NULL);
 	return err;
@@ -1648,13 +1636,11 @@ static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev)
 		return;
 	debugfs_remove(nsim_dev->take_snapshot);
 
-	devl_lock(devlink);
 	if (nsim_dev_get_vfs(nsim_dev)) {
 		nsim_bus_dev_set_vfs(nsim_dev->nsim_bus_dev, 0);
 		if (nsim_esw_mode_is_switchdev(nsim_dev))
 			nsim_esw_legacy_enable(nsim_dev, NULL);
 	}
-	devl_unlock(devlink);
 
 	nsim_dev_port_del_all(nsim_dev);
 	nsim_dev_hwstats_exit(nsim_dev);
@@ -1671,14 +1657,16 @@ void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev)
 	struct devlink *devlink = priv_to_devlink(nsim_dev);
 
 	devlink_unregister(devlink);
+	devl_lock(devlink);
 	nsim_dev_reload_destroy(nsim_dev);
 
 	nsim_bpf_dev_exit(nsim_dev);
 	nsim_dev_debugfs_exit(nsim_dev);
 	devlink_params_unregister(devlink, nsim_devlink_params,
 				  ARRAY_SIZE(nsim_devlink_params));
-	devlink_resources_unregister(devlink);
+	devl_resources_unregister(devlink);
 	kfree(nsim_dev->vfconfigs);
+	devl_unlock(devlink);
 	devlink_free(devlink);
 	dev_set_drvdata(&nsim_bus_dev->dev, NULL);
 }
diff --git a/drivers/net/netdevsim/fib.c b/drivers/net/netdevsim/fib.c
index c8f398f5bc5b..a1f91ff8ec56 100644
--- a/drivers/net/netdevsim/fib.c
+++ b/drivers/net/netdevsim/fib.c
@@ -54,6 +54,7 @@ struct nsim_fib_data {
 	struct rhashtable nexthop_ht;
 	struct devlink *devlink;
 	struct work_struct fib_event_work;
+	struct work_struct fib_flush_work;
 	struct list_head fib_event_queue;
 	spinlock_t fib_event_queue_lock; /* Protects fib event queue list */
 	struct mutex nh_lock; /* Protects NH HT */
@@ -61,6 +62,7 @@ struct nsim_fib_data {
 	bool fail_route_offload;
 	bool fail_res_nexthop_group_replace;
 	bool fail_nexthop_bucket_replace;
+	bool fail_route_delete;
 };
 
 struct nsim_fib_rt_key {
@@ -914,6 +916,10 @@ static int nsim_fib4_prepare_event(struct fib_notifier_info *info,
 		}
 		break;
 	case FIB_EVENT_ENTRY_DEL:
+		if (data->fail_route_delete) {
+			NL_SET_ERR_MSG_MOD(extack, "Failed to process route deletion");
+			return -EINVAL;
+		}
 		nsim_fib_account(&data->ipv4.fib, false);
 		break;
 	}
@@ -952,6 +958,11 @@ static int nsim_fib6_prepare_event(struct fib_notifier_info *info,
 		}
 		break;
 	case FIB_EVENT_ENTRY_DEL:
+		if (data->fail_route_delete) {
+			err = -EINVAL;
+			NL_SET_ERR_MSG_MOD(extack, "Failed to process route deletion");
+			goto err_fib6_event_fini;
+		}
 		nsim_fib_account(&data->ipv6.fib, false);
 		break;
 	}
@@ -978,7 +989,7 @@ static int nsim_fib_event_schedule_work(struct nsim_fib_data *data,
 
 	fib_event = kzalloc(sizeof(*fib_event), GFP_ATOMIC);
 	if (!fib_event)
-		return NOTIFY_BAD;
+		goto err_fib_event_alloc;
 
 	fib_event->data = data;
 	fib_event->event = event;
@@ -1006,6 +1017,9 @@ static int nsim_fib_event_schedule_work(struct nsim_fib_data *data,
 
 err_fib_prepare_event:
 	kfree(fib_event);
+err_fib_event_alloc:
+	if (event == FIB_EVENT_ENTRY_DEL)
+		schedule_work(&data->fib_flush_work);
 	return NOTIFY_BAD;
 }
 
@@ -1453,7 +1467,7 @@ static void nsim_fib_set_max_all(struct nsim_fib_data *data,
 		int err;
 		u64 val;
 
-		err = devlink_resource_size_get(devlink, res_ids[i], &val);
+		err = devl_resource_size_get(devlink, res_ids[i], &val);
 		if (err)
 			val = (u64) -1;
 		nsim_fib_set_max(data, res_ids[i], val);
@@ -1483,6 +1497,24 @@ static void nsim_fib_event_work(struct work_struct *work)
 	mutex_unlock(&data->fib_lock);
 }
 
+static void nsim_fib_flush_work(struct work_struct *work)
+{
+	struct nsim_fib_data *data = container_of(work, struct nsim_fib_data,
+						  fib_flush_work);
+	struct nsim_fib_rt *fib_rt, *fib_rt_tmp;
+
+	/* Process pending work. */
+	flush_work(&data->fib_event_work);
+
+	mutex_lock(&data->fib_lock);
+	list_for_each_entry_safe(fib_rt, fib_rt_tmp, &data->fib_rt_list, list) {
+		rhashtable_remove_fast(&data->fib_rt_ht, &fib_rt->ht_node,
+				       nsim_fib_rt_ht_params);
+		nsim_fib_rt_free(fib_rt, data);
+	}
+	mutex_unlock(&data->fib_lock);
+}
+
 static int
 nsim_fib_debugfs_init(struct nsim_fib_data *data, struct nsim_dev *nsim_dev)
 {
@@ -1504,6 +1536,10 @@ nsim_fib_debugfs_init(struct nsim_fib_data *data, struct nsim_dev *nsim_dev)
 
 	debugfs_create_file("nexthop_bucket_activity", 0200, data->ddir,
 			    data, &nsim_nexthop_bucket_activity_fops);
+
+	data->fail_route_delete = false;
+	debugfs_create_bool("fail_route_delete", 0600, data->ddir,
+			    &data->fail_route_delete);
 	return 0;
 }
 
@@ -1541,6 +1577,7 @@ struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
 		goto err_rhashtable_nexthop_destroy;
 
 	INIT_WORK(&data->fib_event_work, nsim_fib_event_work);
+	INIT_WORK(&data->fib_flush_work, nsim_fib_flush_work);
 	INIT_LIST_HEAD(&data->fib_event_queue);
 	spin_lock_init(&data->fib_event_queue_lock);
 
@@ -1562,31 +1599,32 @@ struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
 		goto err_nexthop_nb_unregister;
 	}
 
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV4_FIB,
-					  nsim_fib_ipv4_resource_occ_get,
-					  data);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV4_FIB_RULES,
-					  nsim_fib_ipv4_rules_res_occ_get,
-					  data);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV6_FIB,
-					  nsim_fib_ipv6_resource_occ_get,
-					  data);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV6_FIB_RULES,
-					  nsim_fib_ipv6_rules_res_occ_get,
-					  data);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_NEXTHOPS,
-					  nsim_fib_nexthops_res_occ_get,
-					  data);
+	devl_resource_occ_get_register(devlink,
+				       NSIM_RESOURCE_IPV4_FIB,
+				       nsim_fib_ipv4_resource_occ_get,
+				       data);
+	devl_resource_occ_get_register(devlink,
+				       NSIM_RESOURCE_IPV4_FIB_RULES,
+				       nsim_fib_ipv4_rules_res_occ_get,
+				       data);
+	devl_resource_occ_get_register(devlink,
+				       NSIM_RESOURCE_IPV6_FIB,
+				       nsim_fib_ipv6_resource_occ_get,
+				       data);
+	devl_resource_occ_get_register(devlink,
+				       NSIM_RESOURCE_IPV6_FIB_RULES,
+				       nsim_fib_ipv6_rules_res_occ_get,
+				       data);
+	devl_resource_occ_get_register(devlink,
+				       NSIM_RESOURCE_NEXTHOPS,
+				       nsim_fib_nexthops_res_occ_get,
+				       data);
 	return data;
 
 err_nexthop_nb_unregister:
 	unregister_nexthop_notifier(devlink_net(devlink), &data->nexthop_nb);
 err_rhashtable_fib_destroy:
+	cancel_work_sync(&data->fib_flush_work);
 	flush_work(&data->fib_event_work);
 	rhashtable_free_and_destroy(&data->fib_rt_ht, nsim_fib_rt_free,
 				    data);
@@ -1604,18 +1642,19 @@ err_data_free:
 
 void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *data)
 {
-	devlink_resource_occ_get_unregister(devlink,
-					    NSIM_RESOURCE_NEXTHOPS);
-	devlink_resource_occ_get_unregister(devlink,
-					    NSIM_RESOURCE_IPV6_FIB_RULES);
-	devlink_resource_occ_get_unregister(devlink,
-					    NSIM_RESOURCE_IPV6_FIB);
-	devlink_resource_occ_get_unregister(devlink,
-					    NSIM_RESOURCE_IPV4_FIB_RULES);
-	devlink_resource_occ_get_unregister(devlink,
-					    NSIM_RESOURCE_IPV4_FIB);
+	devl_resource_occ_get_unregister(devlink,
+					 NSIM_RESOURCE_NEXTHOPS);
+	devl_resource_occ_get_unregister(devlink,
+					 NSIM_RESOURCE_IPV6_FIB_RULES);
+	devl_resource_occ_get_unregister(devlink,
+					 NSIM_RESOURCE_IPV6_FIB);
+	devl_resource_occ_get_unregister(devlink,
+					 NSIM_RESOURCE_IPV4_FIB_RULES);
+	devl_resource_occ_get_unregister(devlink,
+					 NSIM_RESOURCE_IPV4_FIB);
 	unregister_fib_notifier(devlink_net(devlink), &data->fib_nb);
 	unregister_nexthop_notifier(devlink_net(devlink), &data->nexthop_nb);
+	cancel_work_sync(&data->fib_flush_work);
 	flush_work(&data->fib_event_work);
 	rhashtable_free_and_destroy(&data->fib_rt_ht, nsim_fib_rt_free,
 				    data);
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 0b122872b2c9..7d8ed8d8df5c 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -376,9 +376,6 @@ struct nsim_bus_dev {
 				  */
 	unsigned int max_vfs;
 	unsigned int num_vfs;
-	/* Lock for devlink->reload_enabled in netdevsim module */
-	struct mutex nsim_bus_reload_lock;
-	bool in_reload;
 	bool init;
 };