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, 288 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-timecard b/Documentation/ABI/testing/sysfs-timecard
new file mode 100644
index 000000000..220478156
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-timecard
@@ -0,0 +1,288 @@
+What:		/sys/class/timecard/
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This directory contains files and directories
+		providing a standardized interface to the ancillary
+		features of the OpenCompute timecard.
+
+What:		/sys/class/timecard/ocpN/
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This directory contains the attributes of the Nth timecard
+		registered.
+
+What:		/sys/class/timecard/ocpN/available_clock_sources
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) The list of available time sources that the PHC
+		uses for clock adjustments.
+
+		====  =================================================
+                NONE  no adjustments
+                PPS   adjustments come from the PPS1 selector (default)
+                TOD   adjustments from the GNSS/TOD module
+                IRIG  adjustments from external IRIG-B signal
+                DCF   adjustments from external DCF signal
+                ====  =================================================
+
+What:		/sys/class/timecard/ocpN/available_sma_inputs
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Set of available destinations (sinks) for a SMA
+		input signal.
+
+                =====  ================================================
+                10Mhz  signal is used as the 10Mhz reference clock
+                PPS1   signal is sent to the PPS1 selector
+                PPS2   signal is sent to the PPS2 selector
+                TS1    signal is sent to timestamper 1
+                TS2    signal is sent to timestamper 2
+                TS3    signal is sent to timestamper 3
+                TS4    signal is sent to timestamper 4
+                IRIG   signal is sent to the IRIG-B module
+                DCF    signal is sent to the DCF module
+                FREQ1  signal is sent to frequency counter 1
+                FREQ2  signal is sent to frequency counter 2
+                FREQ3  signal is sent to frequency counter 3
+                FREQ4  signal is sent to frequency counter 4
+                None   signal input is disabled
+                =====  ================================================
+
+What:		/sys/class/timecard/ocpN/available_sma_outputs
+Date:		May 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Set of available sources for a SMA output signal.
+
+                =====  ================================================
+                10Mhz  output is from the 10Mhz reference clock
+                PHC    output PPS is from the PHC clock
+                MAC    output PPS is from the Miniature Atomic Clock
+                GNSS1  output PPS is from the first GNSS module
+                GNSS2  output PPS is from the second GNSS module
+                IRIG   output is from the PHC, in IRIG-B format
+                DCF    output is from the PHC, in DCF format
+                GEN1   output is from frequency generator 1
+                GEN2   output is from frequency generator 2
+                GEN3   output is from frequency generator 3
+                GEN4   output is from frequency generator 4
+                GND    output is GND
+                VCC    output is VCC
+                =====  ================================================
+
+What:		/sys/class/timecard/ocpN/clock_source
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) Contains the current synchronization source used by
+		the PHC.  May be changed by writing one of the listed
+		values from the available_clock_sources attribute set.
+
+What:		/sys/class/timecard/ocpN/clock_status_drift
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Contains the current drift value used by the firmware
+		for internal disciplining of the atomic clock.
+
+What:		/sys/class/timecard/ocpN/clock_status_offset
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Contains the current offset value used by the firmware
+		for internal disciplining of the atomic clock.
+
+What:		/sys/class/timecard/ocpN/freqX
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Optional directory containing the sysfs nodes for
+		frequency counter <X>.
+
+What:		/sys/class/timecard/ocpN/freqX/frequency
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Contains the measured frequency over the specified
+		measurement period.
+
+What:		/sys/class/timecard/ocpN/freqX/seconds
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) Specifies the number of seconds from 0-255 that the
+		frequency should be measured over.  Write 0 to disable.
+
+What:		/sys/class/timecard/ocpN/genX
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Optional directory containing the sysfs nodes for
+		frequency generator <X>.
+
+What:		/sys/class/timecard/ocpN/genX/duty
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Specifies the signal duty cycle as a percentage from 1-99.
+
+What:		/sys/class/timecard/ocpN/genX/period
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Specifies the signal period in nanoseconds.
+
+What:		/sys/class/timecard/ocpN/genX/phase
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Specifies the signal phase offset in nanoseconds.
+
+What:		/sys/class/timecard/ocpN/genX/polarity
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Specifies the signal polarity, either 1 or 0.
+
+What:		/sys/class/timecard/ocpN/genX/running
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Either 0 or 1, showing if the signal generator is running.
+
+What:		/sys/class/timecard/ocpN/genX/start
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Shows the time in <sec>.<nsec> that the signal generator
+		started running.
+
+What:		/sys/class/timecard/ocpN/genX/signal
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) Used to start the signal generator, and summarize
+		the current status.
+
+		The signal generator may be started by writing the signal
+		period, followed by the optional signal values.  If the
+		optional values are not provided, they default to the current
+		settings, which may be obtained from the other sysfs nodes.
+
+		    period [duty [phase [polarity]]]
+
+		echo 500000000 > signal       # 1/2 second period
+		echo 1000000 40 100 > signal
+		echo 0 > signal               # turn off generator
+
+		Period and phase are specified in nanoseconds.  Duty cycle is
+		a percentage from 1-99.  Polarity is 1 or 0.
+
+		Reading this node will return:
+
+		    period duty phase polarity start_time
+
+What:		/sys/class/timecard/ocpN/gnss_sync
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Indicates whether a valid GNSS signal is received,
+		or when the signal was lost.
+
+What:		/sys/class/timecard/ocpN/i2c
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This optional attribute links to the associated i2c device.
+
+What:		/sys/class/timecard/ocpN/irig_b_mode
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) An integer from 0-7 indicating the timecode format
+		of the IRIG-B output signal: B00<n>
+
+What:		/sys/class/timecard/ocpN/pps
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This optional attribute links to the associated PPS device.
+
+What:		/sys/class/timecard/ocpN/ptp
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This attribute links to the associated PTP device.
+
+What:		/sys/class/timecard/ocpN/serialnum
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RO) Provides the serial number of the timecard.
+
+What:		/sys/class/timecard/ocpN/sma1
+What:		/sys/class/timecard/ocpN/sma2
+What:		/sys/class/timecard/ocpN/sma3
+What:		/sys/class/timecard/ocpN/sma4
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) These attributes specify the direction of the signal
+		on the associated SMA connectors, and also the signal sink
+		or source.
+
+		The display format of the attribute is a space separated
+		list of signals, prefixed by the input/output direction.
+
+		The signal direction may be changed (if supported) by
+		prefixing the signal list with either "in:" or "out:".
+		If neither prefix is present, then the direction is unchanged.
+
+		The output signal may be changed by writing one of the listed
+		values from the available_sma_outputs attribute set.
+
+		The input destinations may be changed by writing multiple
+		values from the available_sma_inputs attribute set,
+		separated by spaces.  If there are duplicated input
+		destinations between connectors, the lowest numbered SMA
+		connector is given priority.
+
+		Note that not all input combinations may make sense.
+
+		The 10Mhz reference clock input is currently only valid
+		on SMA1 and may not be combined with other destination sinks.
+
+What:		/sys/class/timecard/ocpN/tod_correction
+Date:		March 2022
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) The incoming GNSS signal is in UTC time, and the NMEA
+		format messages do not provide a TAI offset.  This sets the
+		correction value for the incoming time.
+
+		If UBX_LS is enabled, this should be 0, and the offset is
+		taken from the UBX-NAV-TIMELS message.
+
+What:		/sys/class/timecard/ocpN/ts_window_adjust
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) When retrieving the PHC with the PTP SYS_OFFSET_EXTENDED
+		ioctl, a system timestamp is made before and after the PHC
+		time is retrieved.  The midpoint between the two system
+		timestamps is usually taken to be the SYS time associated
+		with the PHC time.  This estimate may be wrong, as it depends
+		on PCI latencies, and when the PHC time was latched
+
+		The attribute value reduces the end timestamp by the given
+		number of nanoseconds, so the computed midpoint matches the
+		retrieved PHC time.
+
+		The initial value is set based on measured PCI latency and
+		the estimated point where the FPGA latches the PHC time.  This
+		value may be changed by writing an unsigned integer.
+
+What:		/sys/class/timecard/ocpN/ttyGNSS
+What:		/sys/class/timecard/ocpN/ttyGNSS2
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	These optional attributes link to the TTY serial ports
+		associated with the GNSS devices.
+
+What:		/sys/class/timecard/ocpN/ttyMAC
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This optional attribute links to the TTY serial port
+		associated with the Miniature Atomic Clock.
+
+What:		/sys/class/timecard/ocpN/ttyNMEA
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	This optional attribute links to the TTY serial port
+		which outputs the PHC time in NMEA ZDA format.
+
+What:		/sys/class/timecard/ocpN/utc_tai_offset
+Date:		September 2021
+Contact:	Jonathan Lemon <jonathan.lemon@gmail.com>
+Description:	(RW) The DCF and IRIG output signals are in UTC, while the
+		TimeCard operates on TAI.  This attribute allows setting the
+		offset in seconds, which is added to the TAI timebase for
+		these formats.
+
+		The offset may be changed by writing an unsigned integer.