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().
  ...

1 files changed, 175 insertions, 0 deletions

diff --git a/Documentation/admin-guide/media/visl.rst b/Documentation/admin-guide/media/visl.rst
new file mode 100644
index 000000000..7d2dc7834
--- /dev/null
+++ b/Documentation/admin-guide/media/visl.rst
@@ -0,0 +1,175 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+The Virtual Stateless Decoder Driver (visl)
+===========================================
+
+A virtual stateless decoder device for stateless uAPI development
+purposes.
+
+This tool's objective is to help the development and testing of
+userspace applications that use the V4L2 stateless API to decode media.
+
+A userspace implementation can use visl to run a decoding loop even when
+no hardware is available or when the kernel uAPI for the codec has not
+been upstreamed yet. This can reveal bugs at an early stage.
+
+This driver can also trace the contents of the V4L2 controls submitted
+to it.  It can also dump the contents of the vb2 buffers through a
+debugfs interface. This is in many ways similar to the tracing
+infrastructure available for other popular encode/decode APIs out there
+and can help develop a userspace application by using another (working)
+one as a reference.
+
+.. note::
+
+        No actual decoding of video frames is performed by visl. The
+        V4L2 test pattern generator is used to write various debug information
+        to the capture buffers instead.
+
+Module parameters
+-----------------
+
+- visl_debug: Activates debug info, printing various debug messages through
+  dprintk. Also controls whether per-frame debug info is shown. Defaults to off.
+  Note that enabling this feature can result in slow performance through serial.
+
+- visl_transtime_ms: Simulated process time in milliseconds. Slowing down the
+  decoding speed can be useful for debugging.
+
+- visl_dprintk_frame_start, visl_dprintk_frame_nframes: Dictates a range of
+  frames where dprintk is activated. This only controls the dprintk tracing on a
+  per-frame basis. Note that printing a lot of data can be slow through serial.
+
+- keep_bitstream_buffers: Controls whether bitstream (i.e. OUTPUT) buffers are
+  kept after a decoding session. Defaults to false so as to reduce the amount of
+  clutter. keep_bitstream_buffers == false works well when live debugging the
+  client program with GDB.
+
+- bitstream_trace_frame_start, bitstream_trace_nframes: Similar to
+  visl_dprintk_frame_start, visl_dprintk_nframes, but controls the dumping of
+  buffer data through debugfs instead.
+
+What is the default use case for this driver?
+---------------------------------------------
+
+This driver can be used as a way to compare different userspace implementations.
+This assumes that a working client is run against visl and that the ftrace and
+OUTPUT buffer data is subsequently used to debug a work-in-progress
+implementation.
+
+Information on reference frames, their timestamps, the status of the OUTPUT and
+CAPTURE queues and more can be read directly from the CAPTURE buffers.
+
+Supported codecs
+----------------
+
+The following codecs are supported:
+
+- FWHT
+- MPEG2
+- VP8
+- VP9
+- H.264
+- HEVC
+
+visl trace events
+-----------------
+The trace events are defined on a per-codec basis, e.g.:
+
+.. code-block:: bash
+
+        $ ls /sys/kernel/debug/tracing/events/ | grep visl
+        visl_fwht_controls
+        visl_h264_controls
+        visl_hevc_controls
+        visl_mpeg2_controls
+        visl_vp8_controls
+        visl_vp9_controls
+
+For example, in order to dump HEVC SPS data:
+
+.. code-block:: bash
+
+        $ echo 1 >  /sys/kernel/debug/tracing/events/visl_hevc_controls/v4l2_ctrl_hevc_sps/enable
+
+The SPS data will be dumped to the trace buffer, i.e.:
+
+.. code-block:: bash
+
+        $ cat /sys/kernel/debug/tracing/trace
+        video_parameter_set_id 0
+        seq_parameter_set_id 0
+        pic_width_in_luma_samples 1920
+        pic_height_in_luma_samples 1080
+        bit_depth_luma_minus8 0
+        bit_depth_chroma_minus8 0
+        log2_max_pic_order_cnt_lsb_minus4 4
+        sps_max_dec_pic_buffering_minus1 6
+        sps_max_num_reorder_pics 2
+        sps_max_latency_increase_plus1 0
+        log2_min_luma_coding_block_size_minus3 0
+        log2_diff_max_min_luma_coding_block_size 3
+        log2_min_luma_transform_block_size_minus2 0
+        log2_diff_max_min_luma_transform_block_size 3
+        max_transform_hierarchy_depth_inter 2
+        max_transform_hierarchy_depth_intra 2
+        pcm_sample_bit_depth_luma_minus1 0
+        pcm_sample_bit_depth_chroma_minus1 0
+        log2_min_pcm_luma_coding_block_size_minus3 0
+        log2_diff_max_min_pcm_luma_coding_block_size 0
+        num_short_term_ref_pic_sets 0
+        num_long_term_ref_pics_sps 0
+        chroma_format_idc 1
+        sps_max_sub_layers_minus1 0
+        flags AMP_ENABLED|SAMPLE_ADAPTIVE_OFFSET|TEMPORAL_MVP_ENABLED|STRONG_INTRA_SMOOTHING_ENABLED
+
+
+Dumping OUTPUT buffer data through debugfs
+------------------------------------------
+
+If the **VISL_DEBUGFS** Kconfig is enabled, visl will populate
+**/sys/kernel/debug/visl/bitstream** with OUTPUT buffer data according to the
+values of bitstream_trace_frame_start and bitstream_trace_nframes. This can
+highlight errors as broken clients may fail to fill the buffers properly.
+
+A single file is created for each processed OUTPUT buffer. Its name contains an
+integer that denotes the buffer sequence, i.e.:
+
+.. code-block:: c
+
+	snprintf(name, 32, "bitstream%d", run->src->sequence);
+
+Dumping the values is simply a matter of reading from the file, i.e.:
+
+For the buffer with sequence == 0:
+
+.. code-block:: bash
+
+        $ xxd /sys/kernel/debug/visl/bitstream/bitstream0
+        00000000: 2601 af04 d088 bc25 a173 0e41 a4f2 3274  &......%.s.A..2t
+        00000010: c668 cb28 e775 b4ac f53a ba60 f8fd 3aa1  .h.(.u...:.`..:.
+        00000020: 46b4 bcfc 506c e227 2372 e5f5 d7ea 579f  F...Pl.'#r....W.
+        00000030: 6371 5eb5 0eb8 23b5 ca6a 5de5 983a 19e4  cq^...#..j]..:..
+        00000040: e8c3 4320 b4ba a226 cbc1 4138 3a12 32d6  ..C ...&..A8:.2.
+        00000050: fef3 247b 3523 4e90 9682 ac8e eb0c a389  ..${5#N.........
+        00000060: ddd0 6cfc 0187 0e20 7aae b15b 1812 3d33  ..l.... z..[..=3
+        00000070: e1c5 f425 a83a 00b7 4f18 8127 3c4c aefb  ...%.:..O..'<L..
+
+For the buffer with sequence == 1:
+
+.. code-block:: bash
+
+        $ xxd /sys/kernel/debug/visl/bitstream/bitstream1
+        00000000: 0201 d021 49e1 0c40 aa11 1449 14a6 01dc  ...!I..@...I....
+        00000010: 7023 889a c8cd 2cd0 13b4 dab0 e8ca 21fe  p#....,.......!.
+        00000020: c4c8 ab4c 486e 4e2f b0df 96cc c74e 8dde  ...LHnN/.....N..
+        00000030: 8ce7 ee36 d880 4095 4d64 30a0 ff4f 0c5e  ...6..@.Md0..O.^
+        00000040: f16b a6a1 d806 ca2a 0ece a673 7bea 1f37  .k.....*...s{..7
+        00000050: 370f 5bb9 1dc4 ba21 6434 bc53 0173 cba0  7.[....!d4.S.s..
+        00000060: dfe6 bc99 01ea b6e0 346b 92b5 c8de 9f5d  ........4k.....]
+        00000070: e7cc 3484 1769 fef2 a693 a945 2c8b 31da  ..4..i.....E,.1.
+
+And so on.
+
+By default, the files are removed during STREAMOFF. This is to reduce the amount
+of clutter.