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, 250 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
new file mode 100644
index 000000000..819939d85
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -0,0 +1,250 @@
+What:		/sys/firmware/acpi/fpdt/
+Date:		Jan 2021
+Contact:	Zhang Rui <rui.zhang@intel.com>
+Description:
+		ACPI Firmware Performance Data Table (FPDT) provides
+		information for firmware performance data for system boot,
+		S3 suspend and S3 resume. This sysfs entry contains the
+		performance data retrieved from the FPDT.
+
+		boot:
+			firmware_start_ns: Timer value logged at the beginning
+				of firmware image execution. In nanoseconds.
+			bootloader_load_ns: Timer value logged just prior to
+				loading the OS boot loader into memory.
+				In nanoseconds.
+			bootloader_launch_ns: Timer value logged just prior to
+				launching the currently loaded OS boot loader
+				image. In nanoseconds.
+			exitbootservice_start_ns: Timer value logged at the
+				point when the OS loader calls the
+				ExitBootServices function for UEFI compatible
+				firmware. In nanoseconds.
+			exitbootservice_end_ns: Timer value logged at the point
+				just prior to the OS loader gaining control
+				back from the ExitBootServices function for
+				UEFI compatible firmware. In nanoseconds.
+		suspend:
+			suspend_start_ns: Timer value recorded at the previous
+				OS write to SLP_TYP upon entry to S3. In
+				nanoseconds.
+			suspend_end_ns: Timer value recorded at the previous
+				firmware write to SLP_TYP used to trigger
+				hardware entry to S3. In nanoseconds.
+		resume:
+			resume_count: A count of the number of S3 resume cycles
+				since the last full boot sequence.
+			resume_avg_ns: Average timer value of all resume cycles
+				logged since the last full boot sequence,
+				including the most recent resume. In nanoseconds.
+			resume_prev_ns: Timer recorded at the end of the previous
+				platform runtime firmware S3 resume, just prior to
+				handoff to the OS waking vector. In nanoseconds.
+
+What:		/sys/firmware/acpi/bgrt/
+Date:		January 2012
+Contact:	Matthew Garrett <mjg@redhat.com>
+Description:
+		The BGRT is an ACPI 5.0 feature that allows the OS
+		to obtain a copy of the firmware boot splash and
+		some associated metadata. This is intended to be used
+		by boot splash applications in order to interact with
+		the firmware boot splash in order to avoid jarring
+		transitions.
+
+		image: The image bitmap. Currently a 32-bit BMP.
+		status: 1 if the image is valid, 0 if firmware invalidated it.
+		type: 0 indicates image is in BMP format.
+
+		======== ===================================================
+		version: The version of the BGRT. Currently 1.
+		xoffset: The number of pixels between the left of the screen
+			 and the left edge of the image.
+		yoffset: The number of pixels between the top of the screen
+			 and the top edge of the image.
+		======== ===================================================
+
+What:		/sys/firmware/acpi/hotplug/
+Date:		February 2013
+Contact:	Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+		There are separate hotplug profiles for different classes of
+		devices supported by ACPI, such as containers, memory modules,
+		processors, PCI root bridges etc.  A hotplug profile for a given
+		class of devices is a collection of settings defining the way
+		that class of devices will be handled by the ACPI core hotplug
+		code.  Those profiles are represented in sysfs as subdirectories
+		of /sys/firmware/acpi/hotplug/.
+
+		The following setting is available to user space for each
+		hotplug profile:
+
+		======== =======================================================
+		enabled: If set, the ACPI core will handle notifications of
+			 hotplug events associated with the given class of
+			 devices and will allow those devices to be ejected with
+			 the help of the _EJ0 control method.  Unsetting it
+			 effectively disables hotplug for the correspoinding
+			 class of devices.
+		======== =======================================================
+
+		The value of the above attribute is an integer number: 1 (set)
+		or 0 (unset).  Attempts to write any other values to it will
+		cause -EINVAL to be returned.
+
+What:		/sys/firmware/acpi/interrupts/
+Date:		February 2008
+Contact:	Len Brown <lenb@kernel.org>
+Description:
+		All ACPI interrupts are handled via a single IRQ,
+		the System Control Interrupt (SCI), which appears
+		as "acpi" in /proc/interrupts.
+
+		However, one of the main functions of ACPI is to make
+		the platform understand random hardware without
+		special driver support.  So while the SCI handles a few
+		well known (fixed feature) interrupts sources, such
+		as the power button, it can also handle a variable
+		number of a "General Purpose Events" (GPE).
+
+		A GPE vectors to a specified handler in AML, which
+		can do a anything the BIOS writer wants from
+		OS context.  GPE 0x12, for example, would vector
+		to a level or edge handler called _L12 or _E12.
+		The handler may do its business and return.
+		Or the handler may send send a Notify event
+		to a Linux device driver registered on an ACPI device,
+		such as a battery, or a processor.
+
+		To figure out where all the SCI's are coming from,
+		/sys/firmware/acpi/interrupts contains a file listing
+		every possible source, and the count of how many
+		times it has triggered::
+
+		  $ cd /sys/firmware/acpi/interrupts
+		  $ grep . *
+		  error:	     0
+		  ff_gbl_lock:	     0   enable
+		  ff_pmtimer:	     0  invalid
+		  ff_pwr_btn:	     0   enable
+		  ff_rt_clk:	     2  disable
+		  ff_slp_btn:	     0  invalid
+		  gpe00:	     0	invalid
+		  gpe01:	     0	 enable
+		  gpe02:	   108	 enable
+		  gpe03:	     0	invalid
+		  gpe04:	     0	invalid
+		  gpe05:	     0	invalid
+		  gpe06:	     0	 enable
+		  gpe07:	     0	 enable
+		  gpe08:	     0	invalid
+		  gpe09:	     0	invalid
+		  gpe0A:	     0	invalid
+		  gpe0B:	     0	invalid
+		  gpe0C:	     0	invalid
+		  gpe0D:	     0	invalid
+		  gpe0E:	     0	invalid
+		  gpe0F:	     0	invalid
+		  gpe10:	     0	invalid
+		  gpe11:	     0	invalid
+		  gpe12:	     0	invalid
+		  gpe13:	     0	invalid
+		  gpe14:	     0	invalid
+		  gpe15:	     0	invalid
+		  gpe16:	     0	invalid
+		  gpe17:	  1084	 enable
+		  gpe18:	     0	 enable
+		  gpe19:	     0	invalid
+		  gpe1A:	     0	invalid
+		  gpe1B:	     0	invalid
+		  gpe1C:	     0	invalid
+		  gpe1D:	     0	invalid
+		  gpe1E:	     0	invalid
+		  gpe1F:	     0	invalid
+		  gpe_all:	  1192
+		  sci:		  1194
+		  sci_not:	     0
+
+		===========  ==================================================
+		sci	     The number of times the ACPI SCI
+			     has been called and claimed an interrupt.
+
+		sci_not	     The number of times the ACPI SCI
+			     has been called and NOT claimed an interrupt.
+
+		gpe_all	     count of SCI caused by GPEs.
+
+		gpeXX	     count for individual GPE source
+
+		ff_gbl_lock  Global Lock
+
+		ff_pmtimer   PM Timer
+
+		ff_pwr_btn   Power Button
+
+		ff_rt_clk    Real Time Clock
+
+		ff_slp_btn   Sleep Button
+
+		error	     an interrupt that can't be accounted for above.
+
+		invalid      it's either a GPE or a Fixed Event that
+			     doesn't have an event handler.
+
+		disable	     the GPE/Fixed Event is valid but disabled.
+
+		enable       the GPE/Fixed Event is valid and enabled.
+		===========  ==================================================
+
+		Root has permission to clear any of these counters.  Eg.::
+
+		  # echo 0 > gpe11
+
+		All counters can be cleared by clearing the total "sci"::
+
+		  # echo 0 > sci
+
+		None of these counters has an effect on the function
+		of the system, they are simply statistics.
+
+		Besides this, user can also write specific strings to these files
+		to enable/disable/clear ACPI interrupts in user space, which can be
+		used to debug some ACPI interrupt storm issues.
+
+		Note that only writing to VALID GPE/Fixed Event is allowed,
+		i.e. user can only change the status of runtime GPE and
+		Fixed Event with event handler installed.
+
+		Let's take power button fixed event for example, please kill acpid
+		and other user space applications so that the machine won't shutdown
+		when pressing the power button::
+
+		  # cat ff_pwr_btn
+		  0	enabled
+		  # press the power button for 3 times;
+		  # cat ff_pwr_btn
+		  3	enabled
+		  # echo disable > ff_pwr_btn
+		  # cat ff_pwr_btn
+		  3	disabled
+		  # press the power button for 3 times;
+		  # cat ff_pwr_btn
+		  3	disabled
+		  # echo enable > ff_pwr_btn
+		  # cat ff_pwr_btn
+		  4	enabled
+		  /*
+		   * this is because the status bit is set even if the enable
+		   * bit is cleared, and it triggers an ACPI fixed event when
+		   * the enable bit is set again
+		   */
+		  # press the power button for 3 times;
+		  # cat ff_pwr_btn
+		  7	enabled
+		  # echo disable > ff_pwr_btn
+		  # press the power button for 3 times;
+		  # echo clear > ff_pwr_btn	/* clear the status bit */
+		  # echo disable > ff_pwr_btn
+		  # cat ff_pwr_btn
+		  7	enabled
+