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

Pull networking updates from Jakub Kicinski:
 "Core:

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

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

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

   - Expose all net/core sysctls inside netns.

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

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

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

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

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

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

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

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

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

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

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

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

  BPF:

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

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

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

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

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

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

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

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

   - Add support for BPF trampoline on s390x and riscv64.

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

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

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

  Netfilter:

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

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

  Driver API:

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

   - Separate C22 and C45 MDIO bus transactions more clearly.

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

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

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

   - Add support for controlling MACSec offload using netlink SET.

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

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

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

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

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

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

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

  New hardware / drivers:

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

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

   - CAN:
      - Renesas R-Car V4H

  Drivers:

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

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

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

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

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

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

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

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

   - Mobile:
      - rmnet: support TX aggregation"

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

6 files changed, 1613 insertions, 0 deletions

diff --git a/Documentation/netlink/genetlink-c.yaml b/Documentation/netlink/genetlink-c.yaml
new file mode 100644
index 000000000..bbcfa2472
--- /dev/null
+++ b/Documentation/netlink/genetlink-c.yaml
@@ -0,0 +1,331 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://kernel.org/schemas/netlink/genetlink-c.yaml#
+$schema: https://json-schema.org/draft-07/schema
+
+# Common defines
+$defs:
+  uint:
+    type: integer
+    minimum: 0
+  len-or-define:
+    type: [ string, integer ]
+    pattern: ^[0-9A-Za-z_]+( - 1)?$
+    minimum: 0
+
+# Schema for specs
+title: Protocol
+description: Specification of a genetlink protocol
+type: object
+required: [ name, doc, attribute-sets, operations ]
+additionalProperties: False
+properties:
+  name:
+    description: Name of the genetlink family.
+    type: string
+  doc:
+    type: string
+  version:
+    description: Generic Netlink family version. Default is 1.
+    type: integer
+    minimum: 1
+  protocol:
+    description: Schema compatibility level. Default is "genetlink".
+    enum: [ genetlink, genetlink-c ]
+  # Start genetlink-c
+  uapi-header:
+    description: Path to the uAPI header, default is linux/${family-name}.h
+    type: string
+  c-family-name:
+    description: Name of the define for the family name.
+    type: string
+  c-version-name:
+    description: Name of the define for the verion of the family.
+    type: string
+  max-by-define:
+    description: Makes the number of attributes and commands be specified by a define, not an enum value.
+    type: boolean
+  # End genetlink-c
+
+  definitions:
+    description: List of type and constant definitions (enums, flags, defines).
+    type: array
+    items:
+      type: object
+      required: [ type, name ]
+      additionalProperties: False
+      properties:
+        name:
+          type: string
+        header:
+          description: For C-compatible languages, header which already defines this value.
+          type: string
+        type:
+          enum: [ const, enum, flags ]
+        doc:
+          type: string
+        # For const
+        value:
+          description: For const - the value.
+          type: [ string, integer ]
+        # For enum and flags
+        value-start:
+          description: For enum or flags the literal initializer for the first value.
+          type: [ string, integer ]
+        entries:
+          description: For enum or flags array of values.
+          type: array
+          items:
+            oneOf:
+              - type: string
+              - type: object
+                required: [ name ]
+                additionalProperties: False
+                properties:
+                  name:
+                    type: string
+                  value:
+                    type: integer
+                  doc:
+                    type: string
+        render-max:
+          description: Render the max members for this enum.
+          type: boolean
+        # Start genetlink-c
+        enum-name:
+          description: Name for enum, if empty no name will be used.
+          type: [ string, "null" ]
+        name-prefix:
+          description: For enum the prefix of the values, optional.
+          type: string
+        # End genetlink-c
+
+  attribute-sets:
+    description: Definition of attribute spaces for this family.
+    type: array
+    items:
+      description: Definition of a single attribute space.
+      type: object
+      required: [ name, attributes ]
+      additionalProperties: False
+      properties:
+        name:
+          description: |
+            Name used when referring to this space in other definitions, not used outside of the spec.
+          type: string
+        name-prefix:
+          description: |
+            Prefix for the C enum name of the attributes. Default family[name]-set[name]-a-
+          type: string
+        enum-name:
+          description: Name for the enum type of the attribute.
+          type: string
+        doc:
+          description: Documentation of the space.
+          type: string
+        subset-of:
+          description: |
+            Name of another space which this is a logical part of. Sub-spaces can be used to define
+            a limited group of attributes which are used in a nest.
+          type: string
+        # Start genetlink-c
+        attr-cnt-name:
+          description: The explicit name for constant holding the count of attributes (last attr + 1).
+          type: string
+        attr-max-name:
+          description: The explicit name for last member of attribute enum.
+          type: string
+        # End genetlink-c
+        attributes:
+          description: List of attributes in the space.
+          type: array
+          items:
+            type: object
+            required: [ name, type ]
+            additionalProperties: False
+            properties:
+              name:
+                type: string
+              type: &attr-type
+                enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+                        string, nest, array-nest, nest-type-value ]
+              doc:
+                description: Documentation of the attribute.
+                type: string
+              value:
+                description: Value for the enum item representing this attribute in the uAPI.
+                $ref: '#/$defs/uint'
+              type-value:
+                description: Name of the value extracted from the type of a nest-type-value attribute.
+                type: array
+                items:
+                  type: string
+              byte-order:
+                enum: [ little-endian, big-endian ]
+              multi-attr:
+                type: boolean
+              nested-attributes:
+                description: Name of the space (sub-space) used inside the attribute.
+                type: string
+              enum:
+                description: Name of the enum type used for the attribute.
+                type: string
+              enum-as-flags:
+                description: |
+                  Treat the enum as flags. In most cases enum is either used as flags or as values.
+                  Sometimes, however, both forms are necessary, in which case header contains the enum
+                  form while specific attributes may request to convert the values into a bitfield.
+                type: boolean
+              checks:
+                description: Kernel input validation.
+                type: object
+                additionalProperties: False
+                properties:
+                  flags-mask:
+                    description: Name of the flags constant on which to base mask (unsigned scalar types only).
+                    type: string
+                  min:
+                    description: Min value for an integer attribute.
+                    type: integer
+                  min-len:
+                    description: Min length for a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+                  max-len:
+                    description: Max length for a string or a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+              sub-type: *attr-type
+
+      # Make sure name-prefix does not appear in subsets (subsets inherit naming)
+      dependencies:
+        name-prefix:
+          not:
+            required: [ subset-of ]
+        subset-of:
+          not:
+            required: [ name-prefix ]
+
+  operations:
+    description: Operations supported by the protocol.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      enum-model:
+        description: |
+          The model of assigning values to the operations.
+          "unified" is the recommended model where all message types belong
+          to a single enum.
+          "directional" has the messages sent to the kernel and from the kernel
+          enumerated separately.
+        enum: [ unified ]
+      name-prefix:
+        description: |
+          Prefix for the C enum name of the command. The name is formed by concatenating
+          the prefix with the upper case name of the command, with dashes replaced by underscores.
+        type: string
+      enum-name:
+        description: Name for the enum type with commands.
+        type: string
+      async-prefix:
+        description: Same as name-prefix but used to render notifications and events to separate enum.
+        type: string
+      async-enum:
+        description: Name for the enum type with notifications/events.
+        type: string
+      list:
+        description: List of commands
+        type: array
+        items:
+          type: object
+          additionalProperties: False
+          required: [ name, doc ]
+          properties:
+            name:
+              description: Name of the operation, also defining its C enum value in uAPI.
+              type: string
+            doc:
+              description: Documentation for the command.
+              type: string
+            value:
+              description: Value for the enum in the uAPI.
+              $ref: '#/$defs/uint'
+            attribute-set:
+              description: |
+                Attribute space from which attributes directly in the requests and replies
+                to this command are defined.
+              type: string
+            flags: &cmd_flags
+              description: Command flags.
+              type: array
+              items:
+                enum: [ admin-perm ]
+            dont-validate:
+              description: Kernel attribute validation flags.
+              type: array
+              items:
+                enum: [ strict, dump ]
+            do: &subop-type
+              description: Main command handler.
+              type: object
+              additionalProperties: False
+              properties:
+                request: &subop-attr-list
+                  description: Definition of the request message for a given command.
+                  type: object
+                  additionalProperties: False
+                  properties:
+                    attributes:
+                      description: |
+                        Names of attributes from the attribute-set (not full attribute
+                        definitions, just names).
+                      type: array
+                      items:
+                        type: string
+                reply: *subop-attr-list
+                pre:
+                  description: Hook for a function to run before the main callback (pre_doit or start).
+                  type: string
+                post:
+                  description: Hook for a function to run after the main callback (post_doit or done).
+                  type: string
+            dump: *subop-type
+            notify:
+              description: Name of the command sharing the reply type with this notification.
+              type: string
+            event:
+              type: object
+              additionalProperties: False
+              properties:
+                attributes:
+                  description: Explicit list of the attributes for the notification.
+                  type: array
+                  items:
+                    type: string
+            mcgrp:
+              description: Name of the multicast group generating given notification.
+              type: string
+  mcast-groups:
+    description: List of multicast groups.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      list:
+        description: List of groups.
+        type: array
+        items:
+          type: object
+          required: [ name ]
+          additionalProperties: False
+          properties:
+            name:
+              description: |
+                The name for the group, used to form the define and the value of the define.
+              type: string
+            # Start genetlink-c
+            c-define-name:
+              description: Override for the name of the define in C uAPI.
+              type: string
+            # End genetlink-c
+            flags: *cmd_flags
diff --git a/Documentation/netlink/genetlink-legacy.yaml b/Documentation/netlink/genetlink-legacy.yaml
new file mode 100644
index 000000000..5642925c4
--- /dev/null
+++ b/Documentation/netlink/genetlink-legacy.yaml
@@ -0,0 +1,361 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://kernel.org/schemas/netlink/genetlink-legacy.yaml#
+$schema: https://json-schema.org/draft-07/schema
+
+# Common defines
+$defs:
+  uint:
+    type: integer
+    minimum: 0
+  len-or-define:
+    type: [ string, integer ]
+    pattern: ^[0-9A-Za-z_]+( - 1)?$
+    minimum: 0
+
+# Schema for specs
+title: Protocol
+description: Specification of a genetlink protocol
+type: object
+required: [ name, doc, attribute-sets, operations ]
+additionalProperties: False
+properties:
+  name:
+    description: Name of the genetlink family.
+    type: string
+  doc:
+    type: string
+  version:
+    description: Generic Netlink family version. Default is 1.
+    type: integer
+    minimum: 1
+  protocol:
+    description: Schema compatibility level. Default is "genetlink".
+    enum: [ genetlink, genetlink-c, genetlink-legacy ] # Trim
+  # Start genetlink-c
+  uapi-header:
+    description: Path to the uAPI header, default is linux/${family-name}.h
+    type: string
+  c-family-name:
+    description: Name of the define for the family name.
+    type: string
+  c-version-name:
+    description: Name of the define for the verion of the family.
+    type: string
+  max-by-define:
+    description: Makes the number of attributes and commands be specified by a define, not an enum value.
+    type: boolean
+  # End genetlink-c
+  # Start genetlink-legacy
+  kernel-policy:
+    description: |
+      Defines if the input policy in the kernel is global, per-operation, or split per operation type.
+      Default is split.
+    enum: [ split, per-op, global ]
+  # End genetlink-legacy
+
+  definitions:
+    description: List of type and constant definitions (enums, flags, defines).
+    type: array
+    items:
+      type: object
+      required: [ type, name ]
+      additionalProperties: False
+      properties:
+        name:
+          type: string
+        header:
+          description: For C-compatible languages, header which already defines this value.
+          type: string
+        type:
+          enum: [ const, enum, flags, struct ] # Trim
+        doc:
+          type: string
+        # For const
+        value:
+          description: For const - the value.
+          type: [ string, integer ]
+        # For enum and flags
+        value-start:
+          description: For enum or flags the literal initializer for the first value.
+          type: [ string, integer ]
+        entries:
+          description: For enum or flags array of values.
+          type: array
+          items:
+            oneOf:
+              - type: string
+              - type: object
+                required: [ name ]
+                additionalProperties: False
+                properties:
+                  name:
+                    type: string
+                  value:
+                    type: integer
+                  doc:
+                    type: string
+        render-max:
+          description: Render the max members for this enum.
+          type: boolean
+        # Start genetlink-c
+        enum-name:
+          description: Name for enum, if empty no name will be used.
+          type: [ string, "null" ]
+        name-prefix:
+          description: For enum the prefix of the values, optional.
+          type: string
+        # End genetlink-c
+        # Start genetlink-legacy
+        members:
+          description: List of struct members. Only scalars and strings members allowed.
+          type: array
+          items:
+            type: object
+            required: [ name, type ]
+            additionalProperties: False
+            properties:
+              name:
+                type: string
+              type:
+                enum: [ u8, u16, u32, u64, s8, s16, s32, s64, string ]
+              len:
+                $ref: '#/$defs/len-or-define'
+        # End genetlink-legacy
+
+  attribute-sets:
+    description: Definition of attribute spaces for this family.
+    type: array
+    items:
+      description: Definition of a single attribute space.
+      type: object
+      required: [ name, attributes ]
+      additionalProperties: False
+      properties:
+        name:
+          description: |
+            Name used when referring to this space in other definitions, not used outside of the spec.
+          type: string
+        name-prefix:
+          description: |
+            Prefix for the C enum name of the attributes. Default family[name]-set[name]-a-
+          type: string
+        enum-name:
+          description: Name for the enum type of the attribute.
+          type: string
+        doc:
+          description: Documentation of the space.
+          type: string
+        subset-of:
+          description: |
+            Name of another space which this is a logical part of. Sub-spaces can be used to define
+            a limited group of attributes which are used in a nest.
+          type: string
+        # Start genetlink-c
+        attr-cnt-name:
+          description: The explicit name for constant holding the count of attributes (last attr + 1).
+          type: string
+        attr-max-name:
+          description: The explicit name for last member of attribute enum.
+          type: string
+        # End genetlink-c
+        attributes:
+          description: List of attributes in the space.
+          type: array
+          items:
+            type: object
+            required: [ name, type ]
+            additionalProperties: False
+            properties:
+              name:
+                type: string
+              type: &attr-type
+                enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+                        string, nest, array-nest, nest-type-value ]
+              doc:
+                description: Documentation of the attribute.
+                type: string
+              value:
+                description: Value for the enum item representing this attribute in the uAPI.
+                $ref: '#/$defs/uint'
+              type-value:
+                description: Name of the value extracted from the type of a nest-type-value attribute.
+                type: array
+                items:
+                  type: string
+              byte-order:
+                enum: [ little-endian, big-endian ]
+              multi-attr:
+                type: boolean
+              nested-attributes:
+                description: Name of the space (sub-space) used inside the attribute.
+                type: string
+              enum:
+                description: Name of the enum type used for the attribute.
+                type: string
+              enum-as-flags:
+                description: |
+                  Treat the enum as flags. In most cases enum is either used as flags or as values.
+                  Sometimes, however, both forms are necessary, in which case header contains the enum
+                  form while specific attributes may request to convert the values into a bitfield.
+                type: boolean
+              checks:
+                description: Kernel input validation.
+                type: object
+                additionalProperties: False
+                properties:
+                  flags-mask:
+                    description: Name of the flags constant on which to base mask (unsigned scalar types only).
+                    type: string
+                  min:
+                    description: Min value for an integer attribute.
+                    type: integer
+                  min-len:
+                    description: Min length for a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+                  max-len:
+                    description: Max length for a string or a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+              sub-type: *attr-type
+
+      # Make sure name-prefix does not appear in subsets (subsets inherit naming)
+      dependencies:
+        name-prefix:
+          not:
+            required: [ subset-of ]
+        subset-of:
+          not:
+            required: [ name-prefix ]
+
+  operations:
+    description: Operations supported by the protocol.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      enum-model:
+        description: |
+          The model of assigning values to the operations.
+          "unified" is the recommended model where all message types belong
+          to a single enum.
+          "directional" has the messages sent to the kernel and from the kernel
+          enumerated separately.
+        enum: [ unified, directional ] # Trim
+      name-prefix:
+        description: |
+          Prefix for the C enum name of the command. The name is formed by concatenating
+          the prefix with the upper case name of the command, with dashes replaced by underscores.
+        type: string
+      enum-name:
+        description: Name for the enum type with commands.
+        type: string
+      async-prefix:
+        description: Same as name-prefix but used to render notifications and events to separate enum.
+        type: string
+      async-enum:
+        description: Name for the enum type with notifications/events.
+        type: string
+      list:
+        description: List of commands
+        type: array
+        items:
+          type: object
+          additionalProperties: False
+          required: [ name, doc ]
+          properties:
+            name:
+              description: Name of the operation, also defining its C enum value in uAPI.
+              type: string
+            doc:
+              description: Documentation for the command.
+              type: string
+            value:
+              description: Value for the enum in the uAPI.
+              $ref: '#/$defs/uint'
+            attribute-set:
+              description: |
+                Attribute space from which attributes directly in the requests and replies
+                to this command are defined.
+              type: string
+            flags: &cmd_flags
+              description: Command flags.
+              type: array
+              items:
+                enum: [ admin-perm ]
+            dont-validate:
+              description: Kernel attribute validation flags.
+              type: array
+              items:
+                enum: [ strict, dump ]
+            do: &subop-type
+              description: Main command handler.
+              type: object
+              additionalProperties: False
+              properties:
+                request: &subop-attr-list
+                  description: Definition of the request message for a given command.
+                  type: object
+                  additionalProperties: False
+                  properties:
+                    attributes:
+                      description: |
+                        Names of attributes from the attribute-set (not full attribute
+                        definitions, just names).
+                      type: array
+                      items:
+                        type: string
+                    # Start genetlink-legacy
+                    value:
+                      description: |
+                        ID of this message if value for request and response differ,
+                        i.e. requests and responses have different message enums.
+                      $ref: '#/$defs/uint'
+                    # End genetlink-legacy
+                reply: *subop-attr-list
+                pre:
+                  description: Hook for a function to run before the main callback (pre_doit or start).
+                  type: string
+                post:
+                  description: Hook for a function to run after the main callback (post_doit or done).
+                  type: string
+            dump: *subop-type
+            notify:
+              description: Name of the command sharing the reply type with this notification.
+              type: string
+            event:
+              type: object
+              additionalProperties: False
+              properties:
+                attributes:
+                  description: Explicit list of the attributes for the notification.
+                  type: array
+                  items:
+                    type: string
+            mcgrp:
+              description: Name of the multicast group generating given notification.
+              type: string
+  mcast-groups:
+    description: List of multicast groups.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      list:
+        description: List of groups.
+        type: array
+        items:
+          type: object
+          required: [ name ]
+          additionalProperties: False
+          properties:
+            name:
+              description: |
+                The name for the group, used to form the define and the value of the define.
+              type: string
+            # Start genetlink-c
+            c-define-name:
+              description: Override for the name of the define in C uAPI.
+              type: string
+            # End genetlink-c
+            flags: *cmd_flags
diff --git a/Documentation/netlink/genetlink.yaml b/Documentation/netlink/genetlink.yaml
new file mode 100644
index 000000000..62a922755
--- /dev/null
+++ b/Documentation/netlink/genetlink.yaml
@@ -0,0 +1,296 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://kernel.org/schemas/netlink/genetlink-legacy.yaml#
+$schema: https://json-schema.org/draft-07/schema
+
+# Common defines
+$defs:
+  uint:
+    type: integer
+    minimum: 0
+  len-or-define:
+    type: [ string, integer ]
+    pattern: ^[0-9A-Za-z_]+( - 1)?$
+    minimum: 0
+
+# Schema for specs
+title: Protocol
+description: Specification of a genetlink protocol
+type: object
+required: [ name, doc, attribute-sets, operations ]
+additionalProperties: False
+properties:
+  name:
+    description: Name of the genetlink family.
+    type: string
+  doc:
+    type: string
+  version:
+    description: Generic Netlink family version. Default is 1.
+    type: integer
+    minimum: 1
+  protocol:
+    description: Schema compatibility level. Default is "genetlink".
+    enum: [ genetlink ]
+
+  definitions:
+    description: List of type and constant definitions (enums, flags, defines).
+    type: array
+    items:
+      type: object
+      required: [ type, name ]
+      additionalProperties: False
+      properties:
+        name:
+          type: string
+        header:
+          description: For C-compatible languages, header which already defines this value.
+          type: string
+        type:
+          enum: [ const, enum, flags ]
+        doc:
+          type: string
+        # For const
+        value:
+          description: For const - the value.
+          type: [ string, integer ]
+        # For enum and flags
+        value-start:
+          description: For enum or flags the literal initializer for the first value.
+          type: [ string, integer ]
+        entries:
+          description: For enum or flags array of values.
+          type: array
+          items:
+            oneOf:
+              - type: string
+              - type: object
+                required: [ name ]
+                additionalProperties: False
+                properties:
+                  name:
+                    type: string
+                  value:
+                    type: integer
+                  doc:
+                    type: string
+        render-max:
+          description: Render the max members for this enum.
+          type: boolean
+
+  attribute-sets:
+    description: Definition of attribute spaces for this family.
+    type: array
+    items:
+      description: Definition of a single attribute space.
+      type: object
+      required: [ name, attributes ]
+      additionalProperties: False
+      properties:
+        name:
+          description: |
+            Name used when referring to this space in other definitions, not used outside of the spec.
+          type: string
+        name-prefix:
+          description: |
+            Prefix for the C enum name of the attributes. Default family[name]-set[name]-a-
+          type: string
+        enum-name:
+          description: Name for the enum type of the attribute.
+          type: string
+        doc:
+          description: Documentation of the space.
+          type: string
+        subset-of:
+          description: |
+            Name of another space which this is a logical part of. Sub-spaces can be used to define
+            a limited group of attributes which are used in a nest.
+          type: string
+        attributes:
+          description: List of attributes in the space.
+          type: array
+          items:
+            type: object
+            required: [ name, type ]
+            additionalProperties: False
+            properties:
+              name:
+                type: string
+              type: &attr-type
+                enum: [ unused, pad, flag, binary, u8, u16, u32, u64, s32, s64,
+                        string, nest, array-nest, nest-type-value ]
+              doc:
+                description: Documentation of the attribute.
+                type: string
+              value:
+                description: Value for the enum item representing this attribute in the uAPI.
+                $ref: '#/$defs/uint'
+              type-value:
+                description: Name of the value extracted from the type of a nest-type-value attribute.
+                type: array
+                items:
+                  type: string
+              byte-order:
+                enum: [ little-endian, big-endian ]
+              multi-attr:
+                type: boolean
+              nested-attributes:
+                description: Name of the space (sub-space) used inside the attribute.
+                type: string
+              enum:
+                description: Name of the enum type used for the attribute.
+                type: string
+              enum-as-flags:
+                description: |
+                  Treat the enum as flags. In most cases enum is either used as flags or as values.
+                  Sometimes, however, both forms are necessary, in which case header contains the enum
+                  form while specific attributes may request to convert the values into a bitfield.
+                type: boolean
+              checks:
+                description: Kernel input validation.
+                type: object
+                additionalProperties: False
+                properties:
+                  flags-mask:
+                    description: Name of the flags constant on which to base mask (unsigned scalar types only).
+                    type: string
+                  min:
+                    description: Min value for an integer attribute.
+                    type: integer
+                  min-len:
+                    description: Min length for a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+                  max-len:
+                    description: Max length for a string or a binary attribute.
+                    $ref: '#/$defs/len-or-define'
+              sub-type: *attr-type
+
+      # Make sure name-prefix does not appear in subsets (subsets inherit naming)
+      dependencies:
+        name-prefix:
+          not:
+            required: [ subset-of ]
+        subset-of:
+          not:
+            required: [ name-prefix ]
+
+  operations:
+    description: Operations supported by the protocol.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      enum-model:
+        description: |
+          The model of assigning values to the operations.
+          "unified" is the recommended model where all message types belong
+          to a single enum.
+          "directional" has the messages sent to the kernel and from the kernel
+          enumerated separately.
+        enum: [ unified ]
+      name-prefix:
+        description: |
+          Prefix for the C enum name of the command. The name is formed by concatenating
+          the prefix with the upper case name of the command, with dashes replaced by underscores.
+        type: string
+      enum-name:
+        description: Name for the enum type with commands.
+        type: string
+      async-prefix:
+        description: Same as name-prefix but used to render notifications and events to separate enum.
+        type: string
+      async-enum:
+        description: Name for the enum type with notifications/events.
+        type: string
+      list:
+        description: List of commands
+        type: array
+        items:
+          type: object
+          additionalProperties: False
+          required: [ name, doc ]
+          properties:
+            name:
+              description: Name of the operation, also defining its C enum value in uAPI.
+              type: string
+            doc:
+              description: Documentation for the command.
+              type: string
+            value:
+              description: Value for the enum in the uAPI.
+              $ref: '#/$defs/uint'
+            attribute-set:
+              description: |
+                Attribute space from which attributes directly in the requests and replies
+                to this command are defined.
+              type: string
+            flags: &cmd_flags
+              description: Command flags.
+              type: array
+              items:
+                enum: [ admin-perm ]
+            dont-validate:
+              description: Kernel attribute validation flags.
+              type: array
+              items:
+                enum: [ strict, dump ]
+            do: &subop-type
+              description: Main command handler.
+              type: object
+              additionalProperties: False
+              properties:
+                request: &subop-attr-list
+                  description: Definition of the request message for a given command.
+                  type: object
+                  additionalProperties: False
+                  properties:
+                    attributes:
+                      description: |
+                        Names of attributes from the attribute-set (not full attribute
+                        definitions, just names).
+                      type: array
+                      items:
+                        type: string
+                reply: *subop-attr-list
+                pre:
+                  description: Hook for a function to run before the main callback (pre_doit or start).
+                  type: string
+                post:
+                  description: Hook for a function to run after the main callback (post_doit or done).
+                  type: string
+            dump: *subop-type
+            notify:
+              description: Name of the command sharing the reply type with this notification.
+              type: string
+            event:
+              type: object
+              additionalProperties: False
+              properties:
+                attributes:
+                  description: Explicit list of the attributes for the notification.
+                  type: array
+                  items:
+                    type: string
+            mcgrp:
+              description: Name of the multicast group generating given notification.
+              type: string
+  mcast-groups:
+    description: List of multicast groups.
+    type: object
+    required: [ list ]
+    additionalProperties: False
+    properties:
+      list:
+        description: List of groups.
+        type: array
+        items:
+          type: object
+          required: [ name ]
+          additionalProperties: False
+          properties:
+            name:
+              description: |
+                The name for the group, used to form the define and the value of the define.
+              type: string
+            flags: *cmd_flags
diff --git a/Documentation/netlink/specs/ethtool.yaml b/Documentation/netlink/specs/ethtool.yaml
new file mode 100644
index 000000000..08b776908
--- /dev/null
+++ b/Documentation/netlink/specs/ethtool.yaml
@@ -0,0 +1,397 @@
+name: ethtool
+
+protocol: genetlink-legacy
+
+doc: Partial family for Ethtool Netlink.
+
+attribute-sets:
+  -
+    name: header
+    attributes:
+      -
+        name: dev-index
+        type: u32
+        value: 1
+      -
+        name: dev-name
+        type: string
+      -
+        name: flags
+        type: u32
+
+  -
+    name: bitset-bit
+    attributes:
+      -
+        name: index
+        type: u32
+        value: 1
+      -
+        name: name
+        type: string
+      -
+        name: value
+        type: flag
+  -
+    name: bitset-bits
+    attributes:
+      -
+        name: bit
+        type: nest
+        nested-attributes: bitset-bit
+        value: 1
+  -
+    name: bitset
+    attributes:
+      -
+        name: nomask
+        type: flag
+        value: 1
+      -
+        name: size
+        type: u32
+      -
+        name: bits
+        type: nest
+        nested-attributes: bitset-bits
+
+  -
+    name: string
+    attributes:
+      -
+        name: index
+        type: u32
+        value: 1
+      -
+        name: value
+        type: string
+  -
+    name: strings
+    attributes:
+      -
+        name: string
+        type: nest
+        value: 1
+        multi-attr: true
+        nested-attributes: string
+  -
+    name: stringset
+    attributes:
+      -
+        name: id
+        type: u32
+        value: 1
+      -
+        name: count
+        type: u32
+      -
+        name: strings
+        type: nest
+        multi-attr: true
+        nested-attributes: strings
+  -
+    name: stringsets
+    attributes:
+      -
+        name: stringset
+        type: nest
+        multi-attr: true
+        value: 1
+        nested-attributes: stringset
+  -
+    name: strset
+    attributes:
+      -
+        name: header
+        value: 1
+        type: nest
+        nested-attributes: header
+      -
+        name: stringsets
+        type: nest
+        nested-attributes: stringsets
+      -
+        name: counts-only
+        type: flag
+
+  -
+    name: privflags
+    attributes:
+      -
+        name: header
+        value: 1
+        type: nest
+        nested-attributes: header
+      -
+        name: flags
+        type: nest
+        nested-attributes: bitset
+
+  -
+    name: rings
+    attributes:
+      -
+        name: header
+        value: 1
+        type: nest
+        nested-attributes: header
+      -
+        name: rx-max
+        type: u32
+      -
+        name: rx-mini-max
+        type: u32
+      -
+        name: rx-jumbo-max
+        type: u32
+      -
+        name: tx-max
+        type: u32
+      -
+        name: rx
+        type: u32
+      -
+        name: rx-mini
+        type: u32
+      -
+        name: rx-jumbo
+        type: u32
+      -
+        name: tx
+        type: u32
+      -
+        name: rx-buf-len
+        type: u32
+      -
+        name: tcp-data-split
+        type: u8
+      -
+        name: cqe-size
+        type: u32
+      -
+        name: tx-push
+        type: u8
+      -
+        name: rx-push
+        type: u8
+
+  -
+    name: mm-stat
+    attributes:
+      -
+        name: pad
+        value: 1
+        type: pad
+      -
+        name: reassembly-errors
+        type: u64
+      -
+        name: smd-errors
+        type: u64
+      -
+        name: reassembly-ok
+        type: u64
+      -
+        name: rx-frag-count
+        type: u64
+      -
+        name: tx-frag-count
+        type: u64
+      -
+        name: hold-count
+        type: u64
+  -
+    name: mm
+    attributes:
+      -
+        name: header
+        value: 1
+        type: nest
+        nested-attributes: header
+      -
+        name: pmac-enabled
+        type: u8
+      -
+        name: tx-enabled
+        type: u8
+      -
+        name: tx-active
+        type: u8
+      -
+        name: tx-min-frag-size
+        type: u32
+      -
+        name: tx-min-frag-size
+        type: u32
+      -
+        name: verify-enabled
+        type: u8
+      -
+        name: verify-status
+        type: u8
+      -
+        name: verify-time
+        type: u32
+      -
+        name: max-verify-time
+        type: u32
+      -
+        name: stats
+        type: nest
+        nested-attributes: mm-stat
+
+operations:
+  enum-model: directional
+  list:
+    -
+      name: strset-get
+      doc: Get string set from the kernel.
+
+      attribute-set: strset
+
+      do: &strset-get-op
+        request:
+          value: 1
+          attributes:
+            - header
+            - stringsets
+            - counts-only
+        reply:
+          value: 1
+          attributes:
+            - header
+            - stringsets
+      dump: *strset-get-op
+
+    # TODO: fill in the requests in between
+
+    -
+      name: privflags-get
+      doc: Get device private flags.
+
+      attribute-set: privflags
+
+      do: &privflag-get-op
+        request:
+          value: 13
+          attributes:
+            - header
+        reply:
+          value: 14
+          attributes:
+            - header
+            - flags
+      dump: *privflag-get-op
+    -
+      name: privflags-set
+      doc: Set device private flags.
+
+      attribute-set: privflags
+
+      do:
+        request:
+          attributes:
+            - header
+            - flags
+    -
+      name: privflags-ntf
+      doc: Notification for change in device private flags.
+      notify: privflags-get
+
+    -
+      name: rings-get
+      doc: Get ring params.
+
+      attribute-set: rings
+
+      do: &ring-get-op
+        request:
+          attributes:
+            - header
+        reply:
+          attributes:
+            - header
+            - rx-max
+            - rx-mini-max
+            - rx-jumbo-max
+            - tx-max
+            - rx
+            - rx-mini
+            - rx-jumbo
+            - tx
+            - rx-buf-len
+            - tcp-data-split
+            - cqe-size
+            - tx-push
+            - rx-push
+      dump: *ring-get-op
+    -
+      name: rings-set
+      doc: Set ring params.
+
+      attribute-set: rings
+
+      do:
+        request:
+          attributes:
+            - header
+            - rx
+            - rx-mini
+            - rx-jumbo
+            - tx
+            - rx-buf-len
+            - tcp-data-split
+            - cqe-size
+            - tx-push
+            - rx-push
+    -
+      name: rings-ntf
+      doc: Notification for change in ring params.
+      notify: rings-get
+
+    # TODO: fill in the requests in between
+
+    -
+      name: mm-get
+      doc: Get MAC Merge configuration and state
+
+      attribute-set: mm
+
+      do: &mm-get-op
+        request:
+          value: 42
+          attributes:
+            - header
+        reply:
+          value: 42
+          attributes:
+            - header
+            - pmac-enabled
+            - tx-enabled
+            - tx-active
+            - tx-min-frag-size
+            - rx-min-frag-size
+            - verify-enabled
+            - verify-time
+            - max-verify-time
+            - stats
+      dump: *mm-get-op
+    -
+      name: mm-set
+      doc: Set MAC Merge configuration
+
+      attribute-set: mm
+
+      do:
+        request:
+          attributes:
+            - header
+            - verify-enabled
+            - verify-time
+            - tx-enabled
+            - pmac-enabled
+            - tx-min-frag-size
+    -
+      name: mm-ntf
+      doc: Notification for change in MAC Merge configuration.
+      notify: mm-get
diff --git a/Documentation/netlink/specs/fou.yaml b/Documentation/netlink/specs/fou.yaml
new file mode 100644
index 000000000..266c386ee
--- /dev/null
+++ b/Documentation/netlink/specs/fou.yaml
@@ -0,0 +1,128 @@
+name: fou
+
+protocol: genetlink-legacy
+
+doc: |
+  Foo-over-UDP.
+
+c-family-name: fou-genl-name
+c-version-name: fou-genl-version
+max-by-define: true
+kernel-policy: global
+
+definitions:
+  -
+    type: enum
+    name: encap_type
+    name-prefix: fou-encap-
+    enum-name:
+    entries: [ unspec, direct, gue ]
+
+attribute-sets:
+  -
+    name: fou
+    name-prefix: fou-attr-
+    attributes:
+      -
+        name: unspec
+        type: unused
+      -
+        name: port
+        type: u16
+        byte-order: big-endian
+      -
+        name: af
+        type: u8
+      -
+        name: ipproto
+        type: u8
+      -
+        name: type
+        type: u8
+      -
+        name: remcsum_nopartial
+        type: flag
+      -
+        name: local_v4
+        type: u32
+      -
+        name: local_v6
+        type: binary
+        checks:
+          min-len: 16
+      -
+        name: peer_v4
+        type: u32
+      -
+        name: peer_v6
+        type: binary
+        checks:
+          min-len: 16
+      -
+        name: peer_port
+        type: u16
+        byte-order: big-endian
+      -
+        name: ifindex
+        type: s32
+
+operations:
+  list:
+    -
+      name: unspec
+      doc: unused
+
+    -
+      name: add
+      doc: Add port.
+      attribute-set: fou
+
+      dont-validate: [ strict, dump ]
+      flags: [ admin-perm ]
+
+      do:
+        request: &all_attrs
+          attributes:
+            - port
+            - ipproto
+            - type
+            - remcsum_nopartial
+            - local_v4
+            - peer_v4
+            - local_v6
+            - peer_v6
+            - peer_port
+            - ifindex
+
+    -
+      name: del
+      doc: Delete port.
+      attribute-set: fou
+
+      dont-validate: [ strict, dump ]
+      flags: [ admin-perm ]
+
+      do:
+        request:  &select_attrs
+          attributes:
+          - af
+          - ifindex
+          - port
+          - peer_port
+          - local_v4
+          - peer_v4
+          - local_v6
+          - peer_v6
+
+    -
+      name: get
+      doc: Get tunnel info.
+      attribute-set: fou
+      dont-validate: [ strict, dump ]
+
+      do:
+        request: *select_attrs
+        reply: *all_attrs
+
+      dump:
+        reply: *all_attrs
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
new file mode 100644
index 000000000..b4dcdae54
--- /dev/null
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -0,0 +1,100 @@
+name: netdev
+
+doc:
+  netdev configuration over generic netlink.
+
+definitions:
+  -
+    type: flags
+    name: xdp-act
+    entries:
+      -
+        name: basic
+        doc:
+          XDP feautues set supported by all drivers
+          (XDP_ABORTED, XDP_DROP, XDP_PASS, XDP_TX)
+      -
+        name: redirect
+        doc:
+          The netdev supports XDP_REDIRECT
+      -
+        name: ndo-xmit
+        doc:
+          This feature informs if netdev implements ndo_xdp_xmit callback.
+      -
+        name: xsk-zerocopy
+        doc:
+          This feature informs if netdev supports AF_XDP in zero copy mode.
+      -
+        name: hw-offload
+        doc:
+         This feature informs if netdev supports XDP hw oflloading.
+      -
+        name: rx-sg
+        doc:
+          This feature informs if netdev implements non-linear XDP buffer
+          support in the driver napi callback.
+      -
+        name: ndo-xmit-sg
+        doc:
+          This feature informs if netdev implements non-linear XDP buffer
+          support in ndo_xdp_xmit callback.
+
+attribute-sets:
+  -
+    name: dev
+    attributes:
+      -
+        name: ifindex
+        doc: netdev ifindex
+        type: u32
+        value: 1
+        checks:
+          min: 1
+      -
+        name: pad
+        type: pad
+      -
+        name: xdp-features
+        doc: Bitmask of enabled xdp-features.
+        type: u64
+        enum: xdp-act
+        enum-as-flags: true
+
+operations:
+  list:
+    -
+      name: dev-get
+      doc: Get / dump information about a netdev.
+      value: 1
+      attribute-set: dev
+      do:
+        request:
+          attributes:
+            - ifindex
+        reply: &dev-all
+          attributes:
+            - ifindex
+            - xdp-features
+      dump:
+        reply: *dev-all
+    -
+      name: dev-add-ntf
+      doc: Notification about device appearing.
+      notify: dev-get
+      mcgrp: mgmt
+    -
+      name: dev-del-ntf
+      doc: Notification about device disappearing.
+      notify: dev-get
+      mcgrp: mgmt
+    -
+      name: dev-change-ntf
+      doc: Notification about device configuration being changed.
+      notify: dev-get
+      mcgrp: mgmt
+
+mcast-groups:
+  list:
+    -
+      name: mgmt