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, 215 insertions, 0 deletions

diff --git a/Documentation/scsi/hptiop.rst b/Documentation/scsi/hptiop.rst
new file mode 100644
index 000000000..23ae7ae36
--- /dev/null
+++ b/Documentation/scsi/hptiop.rst
@@ -0,0 +1,215 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: <isonum.txt>
+
+======================================================
+Highpoint RocketRAID 3xxx/4xxx Adapter Driver (hptiop)
+======================================================
+
+Controller Register Map
+-----------------------
+
+For RR44xx Intel IOP based adapters, the controller IOP is accessed via PCI BAR0 and BAR2
+
+     ============== ==================================
+     BAR0 offset    Register
+     ============== ==================================
+            0x11C5C Link Interface IRQ Set
+            0x11C60 Link Interface IRQ Clear
+     ============== ==================================
+
+     ============== ==================================
+     BAR2 offset    Register
+     ============== ==================================
+            0x10    Inbound Message Register 0
+            0x14    Inbound Message Register 1
+            0x18    Outbound Message Register 0
+            0x1C    Outbound Message Register 1
+            0x20    Inbound Doorbell Register
+            0x24    Inbound Interrupt Status Register
+            0x28    Inbound Interrupt Mask Register
+            0x30    Outbound Interrupt Status Register
+            0x34    Outbound Interrupt Mask Register
+            0x40    Inbound Queue Port
+            0x44    Outbound Queue Port
+     ============== ==================================
+
+For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
+
+     ============== ==================================
+     BAR0 offset    Register
+     ============== ==================================
+            0x10    Inbound Message Register 0
+            0x14    Inbound Message Register 1
+            0x18    Outbound Message Register 0
+            0x1C    Outbound Message Register 1
+            0x20    Inbound Doorbell Register
+            0x24    Inbound Interrupt Status Register
+            0x28    Inbound Interrupt Mask Register
+            0x30    Outbound Interrupt Status Register
+            0x34    Outbound Interrupt Mask Register
+            0x40    Inbound Queue Port
+            0x44    Outbound Queue Port
+     ============== ==================================
+
+For Marvell not Frey IOP based adapters, the IOP is accessed via PCI BAR0 and BAR1:
+
+     ============== ==================================
+     BAR0 offset    Register
+     ============== ==================================
+         0x20400    Inbound Doorbell Register
+         0x20404    Inbound Interrupt Mask Register
+         0x20408    Outbound Doorbell Register
+         0x2040C    Outbound Interrupt Mask Register
+     ============== ==================================
+
+     ============== ==================================
+     BAR1 offset    Register
+     ============== ==================================
+             0x0    Inbound Queue Head Pointer
+             0x4    Inbound Queue Tail Pointer
+             0x8    Outbound Queue Head Pointer
+             0xC    Outbound Queue Tail Pointer
+            0x10    Inbound Message Register
+            0x14    Outbound Message Register
+     0x40-0x1040    Inbound Queue
+     0x1040-0x2040  Outbound Queue
+     ============== ==================================
+
+For Marvell Frey IOP based adapters, the IOP is accessed via PCI BAR0 and BAR1:
+
+     ============== ==================================
+     BAR0 offset    Register
+     ============== ==================================
+             0x0    IOP configuration information.
+     ============== ==================================
+
+     ============== ===================================================
+     BAR1 offset    Register
+     ============== ===================================================
+          0x4000    Inbound List Base Address Low
+          0x4004    Inbound List Base Address High
+          0x4018    Inbound List Write Pointer
+          0x402C    Inbound List Configuration and Control
+          0x4050    Outbound List Base Address Low
+          0x4054    Outbound List Base Address High
+          0x4058    Outbound List Copy Pointer Shadow Base Address Low
+          0x405C    Outbound List Copy Pointer Shadow Base Address High
+          0x4088    Outbound List Interrupt Cause
+          0x408C    Outbound List Interrupt Enable
+         0x1020C    PCIe Function 0 Interrupt Enable
+         0x10400    PCIe Function 0 to CPU Message A
+         0x10420    CPU to PCIe Function 0 Message A
+         0x10480    CPU to PCIe Function 0 Doorbell
+         0x10484    CPU to PCIe Function 0 Doorbell Enable
+     ============== ===================================================
+
+
+I/O Request Workflow of Not Marvell Frey
+----------------------------------------
+
+All queued requests are handled via inbound/outbound queue port.
+A request packet can be allocated in either IOP or host memory.
+
+To send a request to the controller:
+
+    - Get a free request packet by reading the inbound queue port or
+      allocate a free request in host DMA coherent memory.
+
+      The value returned from the inbound queue port is an offset
+      relative to the IOP BAR0.
+
+      Requests allocated in host memory must be aligned on 32-bytes boundary.
+
+    - Fill the packet.
+
+    - Post the packet to IOP by writing it to inbound queue. For requests
+      allocated in IOP memory, write the offset to inbound queue port. For
+      requests allocated in host memory, write (0x80000000|(bus_addr>>5))
+      to the inbound queue port.
+
+    - The IOP process the request. When the request is completed, it
+      will be put into outbound queue. An outbound interrupt will be
+      generated.
+
+      For requests allocated in IOP memory, the request offset is posted to
+      outbound queue.
+
+      For requests allocated in host memory, (0x80000000|(bus_addr>>5))
+      is posted to the outbound queue. If IOP_REQUEST_FLAG_OUTPUT_CONTEXT
+      flag is set in the request, the low 32-bit context value will be
+      posted instead.
+
+    - The host read the outbound queue and complete the request.
+
+      For requests allocated in IOP memory, the host driver free the request
+      by writing it to the outbound queue.
+
+Non-queued requests (reset/flush etc) can be sent via inbound message
+register 0. An outbound message with the same value indicates the completion
+of an inbound message.
+
+
+I/O Request Workflow of Marvell Frey
+------------------------------------
+
+All queued requests are handled via inbound/outbound list.
+
+To send a request to the controller:
+
+    - Allocate a free request in host DMA coherent memory.
+
+      Requests allocated in host memory must be aligned on 32-bytes boundary.
+
+    - Fill the request with index of the request in the flag.
+
+      Fill a free inbound list unit with the physical address and the size of
+      the request.
+
+      Set up the inbound list write pointer with the index of previous unit,
+      round to 0 if the index reaches the supported count of requests.
+
+    - Post the inbound list writer pointer to IOP.
+
+    - The IOP process the request. When the request is completed, the flag of
+      the request with or-ed IOPMU_QUEUE_MASK_HOST_BITS will be put into a
+      free outbound list unit and the index of the outbound list unit will be
+      put into the copy pointer shadow register. An outbound interrupt will be
+      generated.
+
+    - The host read the outbound list copy pointer shadow register and compare
+      with previous saved read pointer N. If they are different, the host will
+      read the (N+1)th outbound list unit.
+
+      The host get the index of the request from the (N+1)th outbound list
+      unit and complete the request.
+
+Non-queued requests (reset communication/reset/flush etc) can be sent via PCIe
+Function 0 to CPU Message A register. The CPU to PCIe Function 0 Message register
+with the same value indicates the completion of message.
+
+
+User-level Interface
+---------------------
+
+The driver exposes following sysfs attributes:
+
+     ==================   ===    ========================
+     NAME                 R/W    Description
+     ==================   ===    ========================
+     driver-version        R     driver version string
+     firmware-version      R     firmware version string
+     ==================   ===    ========================
+
+
+-----------------------------------------------------------------------------
+
+Copyright |copy| 2006-2012 HighPoint Technologies, Inc. All Rights Reserved.
+
+  This file is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  linux@highpoint-tech.com
+
+  http://www.highpoint-tech.com