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, 190 insertions, 0 deletions

diff --git a/Documentation/fb/vesafb.rst b/Documentation/fb/vesafb.rst
new file mode 100644
index 000000000..f890a4f56
--- /dev/null
+++ b/Documentation/fb/vesafb.rst
@@ -0,0 +1,190 @@
+===============
+What is vesafb?
+===============
+
+This is a generic driver for a graphic framebuffer on intel boxes.
+
+The idea is simple:  Turn on graphics mode at boot time with the help
+of the BIOS, and use this as framebuffer device /dev/fb0, like the m68k
+(and other) ports do.
+
+This means we decide at boot time whenever we want to run in text or
+graphics mode.  Switching mode later on (in protected mode) is
+impossible; BIOS calls work in real mode only.  VESA BIOS Extensions
+Version 2.0 are required, because we need a linear frame buffer.
+
+Advantages:
+
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+   without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0 (=> non-accelerated X11
+   support for every VBE 2.0 compliant graphics board).
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode...
+
+
+How to use it?
+==============
+
+Switching modes is done using the vga=... boot parameter.  Read
+Documentation/admin-guide/svga.rst for details.
+
+You should compile in both vgacon (for text mode) and vesafb (for
+graphics mode). Which of them takes over the console depends on
+whenever the specified mode is text or graphics.
+
+The graphic modes are NOT in the list which you get if you boot with
+vga=ask and hit return. The mode you wish to use is derived from the
+VESA mode number. Here are those VESA mode numbers:
+
+====== =======  =======  ======== =========
+colors 640x480  800x600  1024x768 1280x1024
+====== =======  =======  ======== =========
+256    0x101    0x103    0x105    0x107
+32k    0x110    0x113    0x116    0x119
+64k    0x111    0x114    0x117    0x11A
+16M    0x112    0x115    0x118    0x11B
+====== =======  =======  ======== =========
+
+
+The video mode number of the Linux kernel is the VESA mode number plus
+0x200:
+
+ Linux_kernel_mode_number = VESA_mode_number + 0x200
+
+So the table for the Kernel mode numbers are:
+
+====== =======  =======  ======== =========
+colors 640x480  800x600  1024x768 1280x1024
+====== =======  =======  ======== =========
+256    0x301    0x303    0x305    0x307
+32k    0x310    0x313    0x316    0x319
+64k    0x311    0x314    0x317    0x31A
+16M    0x312    0x315    0x318    0x31B
+====== =======  =======  ======== =========
+
+To enable one of those modes you have to specify "vga=ask" in the
+lilo.conf file and rerun LILO. Then you can type in the desired
+mode at the "vga=ask" prompt. For example if you like to use
+1024x768x256 colors you have to say "305" at this prompt.
+
+If this does not work, this might be because your BIOS does not support
+linear framebuffers or because it does not support this mode at all.
+Even if your board does, it might be the BIOS which does not.  VESA BIOS
+Extensions v2.0 are required, 1.2 is NOT sufficient.  You will get a
+"bad mode number" message if something goes wrong.
+
+1. Note: LILO cannot handle hex, for booting directly with
+   "vga=mode-number" you have to transform the numbers to decimal.
+2. Note: Some newer versions of LILO appear to work with those hex values,
+   if you set the 0x in front of the numbers.
+
+X11
+===
+
+XF68_FBDev should work just fine, but it is non-accelerated.  Running
+another (accelerated) X-Server like XF86_SVGA might or might not work.
+It depends on X-Server and graphics board.
+
+The X-Server must restore the video mode correctly, else you end up
+with a broken console (and vesafb cannot do anything about this).
+
+
+Refresh rates
+=============
+
+There is no way to change the vesafb video mode and/or timings after
+booting linux.  If you are not happy with the 60 Hz refresh rate, you
+have these options:
+
+ * configure and load the DOS-Tools for the graphics board (if
+   available) and boot linux with loadlin.
+ * use a native driver (matroxfb/atyfb) instead if vesafb.  If none
+   is available, write a new one!
+ * VBE 3.0 might work too.  I have neither a gfx board with VBE 3.0
+   support nor the specs, so I have not checked this yet.
+
+
+Configuration
+=============
+
+The VESA BIOS provides protected mode interface for changing
+some parameters.  vesafb can use it for palette changes and
+to pan the display.  It is turned off by default because it
+seems not to work with some BIOS versions, but there are options
+to turn it on.
+
+You can pass options to vesafb using "video=vesafb:option" on
+the kernel command line.  Multiple options should be separated
+by comma, like this: "video=vesafb:ypan,inverse"
+
+Accepted options:
+
+inverse	use inverse color map
+
+========= ======================================================================
+ypan	  enable display panning using the VESA protected mode
+          interface.  The visible screen is just a window of the
+          video memory, console scrolling is done by changing the
+          start of the window.
+
+          pro:
+
+                * scrolling (fullscreen) is fast, because there is
+		  no need to copy around data.
+
+          kontra:
+
+		* scrolling only parts of the screen causes some
+		  ugly flicker effects (boot logo flickers for
+		  example).
+
+ywrap	  Same as ypan, but assumes your gfx board can wrap-around
+          the video memory (i.e. starts reading from top if it
+          reaches the end of video memory).  Faster than ypan.
+
+redraw	  Scroll by redrawing the affected part of the screen, this
+          is the safe (and slow) default.
+
+
+vgapal	  Use the standard vga registers for palette changes.
+          This is the default.
+pmipal    Use the protected mode interface for palette changes.
+
+mtrr:n	  Setup memory type range registers for the vesafb framebuffer
+          where n:
+
+              - 0 - disabled (equivalent to nomtrr) (default)
+              - 1 - uncachable
+              - 2 - write-back
+              - 3 - write-combining
+              - 4 - write-through
+
+          If you see the following in dmesg, choose the type that matches the
+          old one. In this example, use "mtrr:2".
+...
+mtrr:     type mismatch for e0000000,8000000 old: write-back new:
+	  write-combining
+...
+
+nomtrr    disable mtrr
+
+vremap:n
+          Remap 'n' MiB of video RAM. If 0 or not specified, remap memory
+          according to video mode. (2.5.66 patch/idea by Antonino Daplas
+          reversed to give override possibility (allocate more fb memory
+          than the kernel would) to 2.4 by tmb@iki.fi)
+
+vtotal:n  If the video BIOS of your card incorrectly determines the total
+          amount of video RAM, use this option to override the BIOS (in MiB).
+========= ======================================================================
+
+Have fun!
+
+Gerd Knorr <kraxel@goldbach.in-berlin.de>
+
+Minor (mostly typo) changes
+by Nico Schmoigl <schmoigl@rumms.uni-mannheim.de>