Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Don't destroy user event fields when removal fails

   User event fields are destroyed before the event is removed from
   visibility. But that can fail leaving the still visible event with no
   fields. Move the destroying of the fields to after the event is
   successfully removed from visibility.

 - Initialize function graph state is fork before calling
   copy_exec_state()

   For non-CLONE_VM forks, copy_exec_state() allocates a new
   task_exec_state. If that allocation fails, ftrace_graph_exit_task()
   will free the tasks ret_stack pointer. Since that pointer is still
   using the parent's ret_stack, it mistakenly frees the parent's
   pointer too.

   Call ftrace_graph_init() on the task first which will NULL out the
   new tasks's ret_stack and if the copy fails, it will not free
   anything.

 - Remove FGRAPH_MAX_INDEX

   The macro FGRAPH_MAX_INDEX was added but never used. Remove it.

 - Save ent_size in function graph printing of nested functions

   The function graph tracer needs to look at the next event to see if
   the next event is the return of the current function entry. If it is,
   it prints a single line:

	ktime_get();

   Otherwise it prints it like a nested function:

	tick_nohz_irq_exit() {
	    ktime_get();
	    kcpustat_irq_exit();
	}

   In order to look at the next event, it must save the current event so
   that it has the information to print from it. It saves the event in
   the iterator descriptor called "ent". What it doesn't save is the
   ent_size of the event which is now used to know if the function graph
   arguments are to be printed. The peek doesn't save the size so the
   size used happens to be that of the size of the last event that was
   seen.

   Save the entry event size in the iterator descriptor so that the
   correct size is used.

 - Fix several errors with freeing data in the histogram code

   The histogram code had a lot of leaked or or incorrect accounting
   when failures happen. Correct them.

 - Fix histogram regression of .percent and .graph modifiers

   Up until 6.3 histogram values could have "percent" or "graph"
   modifiers that changed how they were printed. But a change that added
   restricting histograms values from being strings, stack traces and
   other modifiers inadvertently prevented them from using the percent
   and graph modifiers, which were legal use cases for values.

   Put back the percent and graph modifiers.

 - Fix various typos in the comments

 - Set the trace_clock before initializing a histogram with clock
   argument

   The histogram API allows the user to specific which trace clock to
   use via a "clock=" string. The histogram is set up first before the
   clock is checked. If the passed in clock is not valid, it exits
   without fully fixing up the histogram leaving it on the list and a
   use-after-free can trigger.

   Update the clock argument first and if it fails then exit gracefully
   before the histogram trigger is placed on any lists.

 - Restore :mod: trailer after parsing in ftrace_set_clr_event

   The function ftrace_set_clr_event() modifies the parse string and
   needs to put it back to what was passed in. It searches for ":mod:"
   via a strsep() but fails to put back the first ':' in the string.

   Add back the ':' in the passed in string.

 - Take trace_array reference when opening a tracer options file

   The options files are dynamically created and some tracers add their
   own options. When a tracer adds their own list of options, the
   trace_array holding them has an array to hold the list of options for
   each tracer. This array increases in size via a krealloc(), and the
   new entry gets a newly allocated array to hold the options of the new
   tracer being added.

   The element in each entry of the tracer's option array holds a
   pointer back to the trace_array, a pointer to the tracer it is
   associated to, a pointer to the flags of the option.

   The issue is that these arrays are freed when the trace_array is
   freed when its instance it represents is removed from the instances
   directory. There's a race that an open of one of these options files
   can happen when the instance is being removed.

   Add a new helper function to be called by the open function of the
   options file to iterate all existing trace_arrays under a lock and
   find the one that has the given option element in one of it's tracer
   arrays. If found, then update the associated trace_array's reference
   counter to keep it from being freed. If not found, have the open call
   return -ENODEV.

 - Disable interrupts when acquiring the lock in rb_wake_up_waiters()

   The function rb_wake_up_waiters() assumes it will be called in
   interrupt context and does not disable irqs when taking
   cpu_buffer->reader_lock, which can be called in hard interrupt
   context. The issue is in PREEMPT_RT, this function is called in
   thread context leaving this lock open to a deadlock.

   Take the lock with interrupts disabled.

 - Use rcu_assign_pointer() for tmp_ops filter hash

   The tmp_ops used in update_ftrace_direct_mod() assigns its
   filter_hash field directly, but that field is annotated as __rcu and
   sparse complains. Assign it with rcu_assign_pointer()

 - Fix use-after-free in enable_trigger_private_data_free()

   The trace_event_call is accessed through the event_trigger_data's
   trace_event_file pointer to put the trace_event_call on freeing. The
   issue is that the trace_event_file data may have been freed already
   causing a use-after-free. Add a field to the event_trigger_data that
   points directly to the trace_event_call so that it can decrement its
   reference directly without needing to go through the
   trace_event_file.

 - Fix accounting of buffer data remote headers

   trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount
   the number of pages is needed for the asked for size as it doesn't
   take into account the meta data on each page. Add a helper function
   to do the calculation properly and use that in these functions.

 - Catch nr_page_va overflow in ring_buffer_desc sizing

   The number of pages per remote ring buffer is capped by
   ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to
   overflow that field would silently allocate a descriptor smaller than
   what was asked for.

 - Do not resize the subbuf order if any per_cpu buffer is disabled

   The mmapping of ring buffers disables resizing the subbuffers, but it
   is done per-cpu whereas the subbuf size change is done for all the
   per_cpu buffers under the buffer->mutex. It could change the size of
   some while the mapping is happening on others. Have the resize of the
   subbuf order check all the per_cpu buffers under the lock to see if
   any of them is disabled before starting and causing an inconsistency
   between buffers that are being mapped.

* tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits)
  ring-buffer: Check resize_disabled before publishing the new subbuf order
  tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  tracing/remotes: Account for ring buffer page header in size calculation
  tracing: Don't dereference trace_event_file in deferred trigger free
  ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  tracing: Take trace_array reference when opening a tracer options file
  tracing: Fix ring_buffer_read_page_size() kernel-doc
  tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event()
  tracing: Fix memory corruption from a "STACKTRACE" histogram key
  tracing: Fix memory corruption from the histogram stacktrace modifier
  tracing: Undo the registration when enabling the histogram trigger fails
  tracing: Take the reference before publishing the named histogram trigger
  tracing: Set the trace clock before registering the histogram trigger
  tracing: Fix typo "preceeded" in comment
  tracing: Fix typo "availabe" in comment
  tracing: Let histogram values keep the percent and graph modifiers
  tracing: Keep the entry count when the histogram stats allocation fails
  tracing: Free histogram the field rejected for a bad modifier
  tracing: Free histogram the var ref when its initialization fails
  ...

1 files changed, 888 insertions, 0 deletions

diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
new file mode 100644
index 000000000..3e3f03bd5
--- /dev/null
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -0,0 +1,888 @@
+# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
+---
+name: netdev
+
+doc: >-
+  netdev configuration over generic netlink.
+
+definitions:
+  -
+    type: const
+    name: page-size
+    # Dummy value, codegen needs a number. The real value comes from
+    # the PAGE_SIZE macro in the header below.
+    value: 0
+    header: asm/page.h
+    scope: kernel
+  -
+    type: flags
+    name: xdp-act
+    render-max: true
+    entries:
+      -
+        name: basic
+        doc: >-
+          XDP features 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 offloading.
+      -
+        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.
+  -
+    type: flags
+    name: xdp-rx-metadata
+    entries:
+      -
+        name: timestamp
+        doc: |
+          Device is capable of exposing receive HW timestamp via
+          bpf_xdp_metadata_rx_timestamp().
+      -
+        name: hash
+        doc: |
+          Device is capable of exposing receive packet hash via
+          bpf_xdp_metadata_rx_hash().
+      -
+        name: vlan-tag
+        doc: |
+          Device is capable of exposing receive packet VLAN tag via
+          bpf_xdp_metadata_rx_vlan_tag().
+  -
+    type: flags
+    name: xsk-flags
+    entries:
+      -
+        name: tx-timestamp
+        doc: >-
+          HW timestamping egress packets is supported by the driver.
+      -
+        name: tx-checksum
+        doc: >-
+          L3 checksum HW offload is supported by the driver.
+      -
+        name: tx-launch-time-fifo
+        doc: >-
+          Launch time HW offload is supported by the driver.
+  -
+    name: queue-type
+    type: enum
+    entries: [rx, tx]
+  -
+    name: qstats-scope
+    type: flags
+    entries: [queue]
+  -
+    name: napi-threaded
+    type: enum
+    entries: [disabled, enabled, busy-poll]
+
+attribute-sets:
+  -
+    name: dev
+    attributes:
+      -
+        name: ifindex
+        doc: netdev ifindex
+        type: u32
+        checks:
+          min: 1
+      -
+        name: pad
+        type: pad
+      -
+        name: xdp-features
+        doc: Bitmask of enabled xdp-features.
+        type: u64
+        enum: xdp-act
+      -
+        name: xdp-zc-max-segs
+        doc: max fragment count supported by ZC driver
+        type: u32
+        checks:
+          min: 1
+      -
+        name: xdp-rx-metadata-features
+        doc: Bitmask of supported XDP receive metadata features.
+             See Documentation/networking/xdp-rx-metadata.rst for more details.
+        type: u64
+        enum: xdp-rx-metadata
+      -
+        name: xsk-features
+        doc: Bitmask of enabled AF_XDP features.
+        type: u64
+        enum: xsk-flags
+  -
+    name: io-uring-provider-info
+    attributes:
+      -
+        name: rx-buf-len
+        type: uint
+        doc: |
+          RX buffer length in bytes for this io_uring memory provider.
+          Reflects the rx_buf_len passed at io_uring zerocopy rx
+          registration time.
+  -
+    name: page-pool
+    attributes:
+      -
+        name: id
+        doc: Unique ID of a Page Pool instance.
+        type: uint
+        checks:
+          min: 1
+          max: u32-max
+      -
+        name: ifindex
+        doc: |
+          ifindex of the netdev to which the pool belongs.
+          May not be reported if the page pool was allocated for a netdev
+          which got destroyed already (page pools may outlast their netdevs
+          because they wait for all memory to be returned).
+        type: u32
+        checks:
+          min: 1
+          max: s32-max
+      -
+        name: napi-id
+        doc: Id of NAPI using this Page Pool instance.
+        type: uint
+        checks:
+          min: 1
+          max: u32-max
+      -
+        name: inflight
+        type: uint
+        doc: |
+          Number of outstanding references to this page pool (allocated
+          but yet to be freed pages). Allocated pages may be held in
+          socket receive queues, driver receive ring, page pool recycling
+          ring, the page pool cache, etc.
+      -
+        name: inflight-mem
+        type: uint
+        doc: |
+          Amount of memory held by inflight pages.
+      -
+        name: detach-time
+        type: uint
+        doc: |
+          Seconds in CLOCK_BOOTTIME of when Page Pool was detached by
+          the driver. Once detached Page Pool can no longer be used to
+          allocate memory.
+          Page Pools wait for all the memory allocated from them to be freed
+          before truly disappearing. "Detached" Page Pools cannot be
+          "re-attached", they are just waiting to disappear.
+          Attribute is absent if Page Pool has not been detached, and
+          can still be used to allocate new memory.
+      -
+        name: dmabuf
+        doc: ID of the dmabuf this page-pool is attached to.
+        type: u32
+      -
+        name: io-uring
+        doc: io-uring memory provider information.
+        type: nest
+        nested-attributes: io-uring-provider-info
+  -
+    name: page-pool-info
+    subset-of: page-pool
+    attributes:
+      -
+        name: id
+      -
+        name: ifindex
+  -
+    name: page-pool-stats
+    doc: |
+      Page pool statistics, see docs for struct page_pool_stats
+      for information about individual statistics.
+    attributes:
+      -
+        name: info
+        doc: Page pool identifying information.
+        type: nest
+        nested-attributes: page-pool-info
+      -
+        name: alloc-fast
+        type: uint
+        value: 8  # reserve some attr ids in case we need more metadata later
+      -
+        name: alloc-slow
+        type: uint
+      -
+        name: alloc-slow-high-order
+        type: uint
+      -
+        name: alloc-empty
+        type: uint
+      -
+        name: alloc-refill
+        type: uint
+      -
+        name: alloc-waive
+        type: uint
+      -
+        name: recycle-cached
+        type: uint
+      -
+        name: recycle-cache-full
+        type: uint
+      -
+        name: recycle-ring
+        type: uint
+      -
+        name: recycle-ring-full
+        type: uint
+      -
+        name: recycle-released-refcnt
+        type: uint
+
+  -
+    name: napi
+    attributes:
+      -
+        name: ifindex
+        doc: ifindex of the netdevice to which NAPI instance belongs.
+        type: u32
+        checks:
+          min: 1
+      -
+        name: id
+        doc: ID of the NAPI instance.
+        type: u32
+      -
+        name: irq
+        doc: The associated interrupt vector number for the napi
+        type: u32
+      -
+        name: pid
+        doc: PID of the napi thread, if NAPI is configured to operate in
+             threaded mode. If NAPI is not in threaded mode (i.e. uses normal
+             softirq context), the attribute will be absent.
+        type: u32
+      -
+        name: defer-hard-irqs
+        doc: The number of consecutive empty polls before IRQ deferral ends
+             and hardware IRQs are re-enabled.
+        type: u32
+        checks:
+          max: s32-max
+      -
+        name: gro-flush-timeout
+        doc: The timeout, in nanoseconds, of when to trigger the NAPI watchdog
+             timer which schedules NAPI processing. Additionally, a non-zero
+             value will also prevent GRO from flushing recent super-frames at
+             the end of a NAPI cycle. This may add receive latency in exchange
+             for reducing the number of frames processed by the network stack.
+        type: uint
+      -
+        name: irq-suspend-timeout
+        doc: The timeout, in nanoseconds, of how long to suspend irq
+             processing, if event polling finds events
+        type: uint
+      -
+        name: threaded
+        doc: Whether the NAPI is configured to operate in threaded polling
+             mode. If this is set to enabled then the NAPI context operates
+             in threaded polling mode. If this is set to busy-poll, then the
+             threaded polling mode also busy polls.
+        type: u32
+        enum: napi-threaded
+  -
+    name: xsk-info
+    attributes: []
+  -
+    name: queue
+    attributes:
+      -
+        name: id
+        doc: Queue index; most queue types are indexed like a C array, with
+             indexes starting at 0 and ending at queue count - 1. Queue indexes
+             are scoped to an interface and queue type.
+        type: u32
+      -
+        name: ifindex
+        doc: ifindex of the netdevice to which the queue belongs.
+        type: u32
+        checks:
+          min: 1
+      -
+        name: type
+        doc: Queue type as rx, tx. Each queue type defines a separate ID space.
+             XDP TX queues allocated in the kernel are not linked to NAPIs and
+             thus not listed. AF_XDP queues will have more information set in
+             the xsk attribute.
+        type: u32
+        enum: queue-type
+      -
+        name: napi-id
+        doc: ID of the NAPI instance which services this queue.
+        type: u32
+      -
+        name: dmabuf
+        doc: ID of the dmabuf attached to this queue, if any.
+        type: u32
+      -
+        name: io-uring
+        doc: io_uring memory provider information.
+        type: nest
+        nested-attributes: io-uring-provider-info
+      -
+        name: xsk
+        doc: XSK information for this queue, if any.
+        type: nest
+        nested-attributes: xsk-info
+      -
+        name: lease
+        doc: |
+          A queue from a virtual device can have a lease which refers to
+          another queue from a physical device. This is useful for memory
+          providers and AF_XDP operations which take an ifindex and queue id
+          to allow applications to bind against virtual devices in containers.
+        type: nest
+        nested-attributes: lease
+  -
+    name: qstats
+    doc: |
+      Get device statistics, scoped to a device or a queue.
+      These statistics extend (and partially duplicate) statistics available
+      in struct rtnl_link_stats64.
+      Value of the `scope` attribute determines how statistics are
+      aggregated. When aggregated for the entire device the statistics
+      represent the total number of events since last explicit reset of
+      the device (i.e. not a reconfiguration like changing queue count).
+      When reported per-queue, however, the statistics may not add
+      up to the total number of events, will only be reported for currently
+      active objects, and will likely report the number of events since last
+      reconfiguration.
+    attributes:
+      -
+        name: ifindex
+        doc: ifindex of the netdevice to which stats belong.
+        type: u32
+        checks:
+          min: 1
+      -
+        name: queue-type
+        doc: Queue type as rx, tx, for queue-id.
+        type: u32
+        enum: queue-type
+      -
+        name: queue-id
+        doc: Queue ID, if stats are scoped to a single queue instance.
+        type: u32
+      -
+        name: scope
+        doc: |
+          What object type should be used to iterate over the stats.
+        type: uint
+        enum: qstats-scope
+      -
+        name: rx-packets
+        doc: |
+          Number of wire packets successfully received and passed to the stack.
+          For drivers supporting XDP, XDP is considered the first layer
+          of the stack, so packets consumed by XDP are still counted here.
+        type: uint
+        value: 8  # reserve some attr ids in case we need more metadata later
+      -
+        name: rx-bytes
+        doc: Successfully received bytes, see `rx-packets`.
+        type: uint
+      -
+        name: tx-packets
+        doc: |
+          Number of wire packets successfully sent. Packet is considered to be
+          successfully sent once it is in device memory (usually this means
+          the device has issued a DMA completion for the packet).
+        type: uint
+      -
+        name: tx-bytes
+        doc: Successfully sent bytes, see `tx-packets`.
+        type: uint
+      -
+        name: rx-alloc-fail
+        doc: |
+          Number of times skb or buffer allocation failed on the Rx datapath.
+          Allocation failure may, or may not result in a packet drop, depending
+          on driver implementation and whether system recovers quickly.
+        type: uint
+      -
+        name: rx-hw-drops
+        doc: |
+          Number of all packets which entered the device, but never left it,
+          including but not limited to: packets dropped due to lack of buffer
+          space, processing errors, explicit or implicit policies and packet
+          filters.
+        type: uint
+      -
+        name: rx-hw-drop-overruns
+        doc: |
+          Number of packets dropped due to transient lack of resources, such as
+          buffer space, host descriptors etc.
+        type: uint
+      -
+        name: rx-csum-complete
+        doc: Number of packets that were marked as CHECKSUM_COMPLETE.
+        type: uint
+      -
+        name: rx-csum-unnecessary
+        doc: Number of packets that were marked as CHECKSUM_UNNECESSARY.
+        type: uint
+      -
+        name: rx-csum-none
+        doc: Number of packets that were not checksummed by device.
+        type: uint
+      -
+        name: rx-csum-bad
+        doc: |
+          Number of packets with bad checksum. The packets are not discarded,
+          but still delivered to the stack.
+        type: uint
+      -
+        name: rx-hw-gro-packets
+        doc: |
+          Number of packets that were coalesced from smaller packets by the
+          device. Counts only packets coalesced with the HW-GRO netdevice
+          feature, LRO-coalesced packets are not counted.
+        type: uint
+      -
+        name: rx-hw-gro-bytes
+        doc: See `rx-hw-gro-packets`.
+        type: uint
+      -
+        name: rx-hw-gro-wire-packets
+        doc: |
+          Number of packets that were coalesced to bigger packetss with the
+          HW-GRO netdevice feature. LRO-coalesced packets are not counted.
+        type: uint
+      -
+        name: rx-hw-gro-wire-bytes
+        doc: See `rx-hw-gro-wire-packets`.
+        type: uint
+      -
+        name: rx-hw-drop-ratelimits
+        doc: |
+          Number of the packets dropped by the device due to the received
+          packets bitrate exceeding the device rate limit.
+        type: uint
+      -
+        name: tx-hw-drops
+        doc: |
+          Number of packets that arrived at the device but never left it,
+          encompassing packets dropped for reasons such as processing errors, as
+          well as those affected by explicitly defined policies and packet
+          filtering criteria.
+        type: uint
+      -
+        name: tx-hw-drop-errors
+        doc: Number of packets dropped because they were invalid or malformed.
+        type: uint
+      -
+        name: tx-csum-none
+        doc: |
+          Number of packets that did not require the device to calculate the
+          checksum.
+        type: uint
+      -
+        name: tx-needs-csum
+        doc: |
+          Number of packets that required the device to calculate the checksum.
+          This counter includes the number of GSO wire packets for which device
+          calculated the L4 checksum.
+        type: uint
+      -
+        name: tx-hw-gso-packets
+        doc: |
+          Number of packets that necessitated segmentation into smaller packets
+          by the device.
+        type: uint
+      -
+        name: tx-hw-gso-bytes
+        doc: See `tx-hw-gso-packets`.
+        type: uint
+      -
+        name: tx-hw-gso-wire-packets
+        doc: |
+          Number of wire-sized packets generated by processing
+          `tx-hw-gso-packets`
+        type: uint
+      -
+        name: tx-hw-gso-wire-bytes
+        doc: See `tx-hw-gso-wire-packets`.
+        type: uint
+      -
+        name: tx-hw-drop-ratelimits
+        doc: |
+          Number of the packets dropped by the device due to the transmit
+          packets bitrate exceeding the device rate limit.
+        type: uint
+      -
+        name: tx-stop
+        doc: |
+          Number of times driver paused accepting new tx packets
+          from the stack to this queue, because the queue was full.
+          Note that if BQL is supported and enabled on the device
+          the networking stack will avoid queuing a lot of data at once.
+        type: uint
+      -
+        name: tx-wake
+        doc: |
+          Number of times driver re-started accepting send
+          requests to this queue from the stack.
+        type: uint
+  -
+    name: queue-id
+    subset-of: queue
+    attributes:
+      -
+        name: id
+      -
+        name: type
+  -
+    name: lease
+    attributes:
+      -
+        name: ifindex
+        doc: The netdev ifindex to lease the queue from.
+        type: u32
+        checks:
+          min: 1
+      -
+        name: queue
+        doc: The netdev queue to lease from.
+        type: nest
+        nested-attributes: queue-id
+      -
+        name: netns-id
+        doc: The network namespace id of the netdev.
+        type: s32
+        checks:
+          min: 0
+  -
+    name: dmabuf
+    attributes:
+      -
+        name: ifindex
+        doc: netdev ifindex to bind the dmabuf to.
+        type: u32
+        checks:
+          min: 1
+      -
+        name: queues
+        doc: receive queues to bind the dmabuf to.
+        type: nest
+        nested-attributes: queue-id
+        multi-attr: true
+      -
+        name: fd
+        doc: dmabuf file descriptor to bind.
+        type: u32
+      -
+        name: id
+        doc: id of the dmabuf binding
+        type: u32
+        checks:
+          min: 1
+      -
+        name: rx-page-size
+        doc: |
+          Size in bytes of each device page the NIC writes into from the bound
+          dmabuf. Must be a power of two and >= PAGE_SIZE; defaults to
+          PAGE_SIZE.
+        type: u32
+        checks:
+          min: page-size
+          max: u32-max
+
+operations:
+  list:
+    -
+      name: dev-get
+      doc: Get / dump information about a netdev.
+      attribute-set: dev
+      do:
+        request:
+          attributes:
+            - ifindex
+        reply: &dev-all
+          attributes:
+            - ifindex
+            - xdp-features
+            - xdp-zc-max-segs
+            - xdp-rx-metadata-features
+            - xsk-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
+    -
+      name: page-pool-get
+      doc: |
+        Get / dump information about Page Pools.
+        Only Page Pools associated by the driver with a net_device
+        can be listed. ifindex will not be reported if the net_device
+        no longer exists.
+      attribute-set: page-pool
+      do:
+        request:
+          attributes:
+            - id
+        reply: &pp-reply
+          attributes:
+            - id
+            - ifindex
+            - napi-id
+            - inflight
+            - inflight-mem
+            - detach-time
+            - dmabuf
+            - io-uring
+      dump:
+        request:
+          attributes:
+            - ifindex
+        reply: *pp-reply
+      config-cond: page-pool
+    -
+      name: page-pool-add-ntf
+      doc: Notification about page pool appearing.
+      notify: page-pool-get
+      mcgrp: page-pool
+      config-cond: page-pool
+    -
+      name: page-pool-del-ntf
+      doc: Notification about page pool disappearing.
+      notify: page-pool-get
+      mcgrp: page-pool
+      config-cond: page-pool
+    -
+      name: page-pool-change-ntf
+      doc: Notification about page pool configuration being changed.
+      notify: page-pool-get
+      mcgrp: page-pool
+      config-cond: page-pool
+    -
+      name: page-pool-stats-get
+      doc: Get page pool statistics.
+      attribute-set: page-pool-stats
+      do:
+        request:
+          attributes:
+            - info
+        reply: &pp-stats-reply
+          attributes:
+            - info
+            - alloc-fast
+            - alloc-slow
+            - alloc-slow-high-order
+            - alloc-empty
+            - alloc-refill
+            - alloc-waive
+            - recycle-cached
+            - recycle-cache-full
+            - recycle-ring
+            - recycle-ring-full
+            - recycle-released-refcnt
+      dump:
+        request:
+          attributes:
+            - info
+        reply: *pp-stats-reply
+      config-cond: page-pool-stats
+    -
+      name: queue-get
+      doc: Get queue information from the kernel.
+           Only configured queues will be reported (as opposed to all available
+           hardware queues).
+      attribute-set: queue
+      do:
+        request:
+          attributes:
+            - ifindex
+            - type
+            - id
+        reply: &queue-get-op
+          attributes:
+            - id
+            - type
+            - napi-id
+            - ifindex
+            - dmabuf
+            - io-uring
+            - xsk
+            - lease
+      dump:
+        request:
+          attributes:
+            - ifindex
+        reply: *queue-get-op
+    -
+      name: napi-get
+      doc: Get information about NAPI instances configured on the system.
+      attribute-set: napi
+      do:
+        request:
+          attributes:
+            - id
+        reply: &napi-get-op
+          attributes:
+            - id
+            - ifindex
+            - irq
+            - pid
+            - defer-hard-irqs
+            - gro-flush-timeout
+            - irq-suspend-timeout
+            - threaded
+      dump:
+        request:
+          attributes:
+            - ifindex
+        reply: *napi-get-op
+    -
+      name: qstats-get
+      doc: |
+        Get / dump fine grained statistics. Which statistics are reported
+        depends on the device and the driver, and whether the driver stores
+        software counters per-queue.
+      attribute-set: qstats
+      dump:
+        request:
+          attributes:
+            - ifindex
+            - scope
+        reply:
+          attributes:
+            - ifindex
+            - queue-type
+            - queue-id
+            - rx-packets
+            - rx-bytes
+            - tx-packets
+            - tx-bytes
+            - rx-alloc-fail
+            - rx-hw-drops
+            - rx-hw-drop-overruns
+            - rx-csum-complete
+            - rx-csum-unnecessary
+            - rx-csum-none
+            - rx-csum-bad
+            - rx-hw-gro-packets
+            - rx-hw-gro-bytes
+            - rx-hw-gro-wire-packets
+            - rx-hw-gro-wire-bytes
+            - rx-hw-drop-ratelimits
+            - tx-hw-drops
+            - tx-hw-drop-errors
+            - tx-csum-none
+            - tx-needs-csum
+            - tx-hw-gso-packets
+            - tx-hw-gso-bytes
+            - tx-hw-gso-wire-packets
+            - tx-hw-gso-wire-bytes
+            - tx-hw-drop-ratelimits
+            - tx-stop
+            - tx-wake
+    -
+      name: bind-rx
+      doc: Bind dmabuf to netdev
+      attribute-set: dmabuf
+      flags: [uns-admin-perm]
+      do:
+        request:
+          attributes:
+            - ifindex
+            - fd
+            - queues
+            - rx-page-size
+        reply:
+          attributes:
+            - id
+    -
+      name: napi-set
+      doc: Set configurable NAPI instance settings.
+      attribute-set: napi
+      flags: [admin-perm]
+      do:
+        request:
+          attributes:
+            - id
+            - defer-hard-irqs
+            - gro-flush-timeout
+            - irq-suspend-timeout
+            - threaded
+    -
+      name: bind-tx
+      doc: Bind dmabuf to netdev for TX
+      attribute-set: dmabuf
+      do:
+        request:
+          attributes:
+            - ifindex
+            - fd
+        reply:
+          attributes:
+            - id
+    -
+      name: queue-create
+      doc: |
+        Create a new queue for the given netdevice. Whether this operation
+        is supported depends on the device and the driver.
+      attribute-set: queue
+      flags: [admin-perm]
+      do:
+        request:
+          attributes:
+            - ifindex
+            - type
+            - lease
+        reply: &queue-create-op
+          attributes:
+            - id
+
+kernel-family:
+  headers: ["net/netdev_netlink.h"]
+  sock-priv: struct netdev_nl_sock
+
+mcast-groups:
+  list:
+    -
+      name: mgmt
+    -
+      name: page-pool