Merge tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core:

   - Allow live renaming when an interface is up

   - Add retpoline wrappers for tc, improving considerably the
     performances of complex queue discipline configurations

   - Add inet drop monitor support

   - A few GRO performance improvements

   - Add infrastructure for atomic dev stats, addressing long standing
     data races

   - De-duplicate common code between OVS and conntrack offloading
     infrastructure

   - A bunch of UBSAN_BOUNDS/FORTIFY_SOURCE improvements

   - Netfilter: introduce packet parser for tunneled packets

   - Replace IPVS timer-based estimators with kthreads to scale up the
     workload with the number of available CPUs

   - Add the helper support for connection-tracking OVS offload

  BPF:

   - Support for user defined BPF objects: the use case is to allocate
     own objects, build own object hierarchies and use the building
     blocks to build own data structures flexibly, for example, linked
     lists in BPF

   - Make cgroup local storage available to non-cgroup attached BPF
     programs

   - Avoid unnecessary deadlock detection and failures wrt BPF task
     storage helpers

   - A relevant bunch of BPF verifier fixes and improvements

   - Veristat tool improvements to support custom filtering, sorting,
     and replay of results

   - Add LLVM disassembler as default library for dumping JITed code

   - Lots of new BPF documentation for various BPF maps

   - Add bpf_rcu_read_{,un}lock() support for sleepable programs

   - Add RCU grace period chaining to BPF to wait for the completion of
     access from both sleepable and non-sleepable BPF programs

   - Add support storing struct task_struct objects as kptrs in maps

   - Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer
     values

   - Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions

  Protocols:

   - TCP: implement Protective Load Balancing across switch links

   - TCP: allow dynamically disabling TCP-MD5 static key, reverting back
     to fast[er]-path

   - UDP: Introduce optional per-netns hash lookup table

   - IPv6: simplify and cleanup sockets disposal

   - Netlink: support different type policies for each generic netlink
     operation

   - MPTCP: add MSG_FASTOPEN and FastOpen listener side support

   - MPTCP: add netlink notification support for listener sockets events

   - SCTP: add VRF support, allowing sctp sockets binding to VRF devices

   - Add bridging MAC Authentication Bypass (MAB) support

   - Extensions for Ethernet VPN bridging implementation to better
     support multicast scenarios

   - More work for Wi-Fi 7 support, comprising conversion of all the
     existing drivers to internal TX queue usage

   - IPSec: introduce a new offload type (packet offload) allowing
     complete header processing and crypto offloading

   - IPSec: extended ack support for more descriptive XFRM error
     reporting

   - RXRPC: increase SACK table size and move processing into a
     per-local endpoint kernel thread, reducing considerably the
     required locking

   - IEEE 802154: synchronous send frame and extended filtering support,
     initial support for scanning available 15.4 networks

   - Tun: bump the link speed from 10Mbps to 10Gbps

   - Tun/VirtioNet: implement UDP segmentation offload support

  Driver API:

   - PHY/SFP: improve power level switching between standard level 1 and
     the higher power levels

   - New API for netdev <-> devlink_port linkage

   - PTP: convert existing drivers to new frequency adjustment
     implementation

   - DSA: add support for rx offloading

   - Autoload DSA tagging driver when dynamically changing protocol

   - Add new PCP and APPTRUST attributes to Data Center Bridging

   - Add configuration support for 800Gbps link speed

   - Add devlink port function attribute to enable/disable RoCE and
     migratable

   - Extend devlink-rate to support strict prioriry and weighted fair
     queuing

   - Add devlink support to directly reading from region memory

   - New device tree helper to fetch MAC address from nvmem

   - New big TCP helper to simplify temporary header stripping

  New hardware / drivers:

   - Ethernet:
      - Marvel Octeon CNF95N and CN10KB Ethernet Switches
      - Marvel Prestera AC5X Ethernet Switch
      - WangXun 10 Gigabit NIC
      - Motorcomm yt8521 Gigabit Ethernet
      - Microchip ksz9563 Gigabit Ethernet Switch
      - Microsoft Azure Network Adapter
      - Linux Automation 10Base-T1L adapter

   - PHY:
      - Aquantia AQR112 and AQR412
      - Motorcomm YT8531S

   - PTP:
      - Orolia ART-CARD

   - WiFi:
      - MediaTek Wi-Fi 7 (802.11be) devices
      - RealTek rtw8821cu, rtw8822bu, rtw8822cu and rtw8723du USB
        devices

   - Bluetooth:
      - Broadcom BCM4377/4378/4387 Bluetooth chipsets
      - Realtek RTL8852BE and RTL8723DS
      - Cypress.CYW4373A0 WiFi + Bluetooth combo device

  Drivers:

   - CAN:
      - gs_usb: bus error reporting support
      - kvaser_usb: listen only and bus error reporting support

   - Ethernet NICs:
      - Intel (100G):
         - extend action skbedit to RX queue mapping
         - implement devlink-rate support
         - support direct read from memory
      - nVidia/Mellanox (mlx5):
         - SW steering improvements, increasing rules update rate
         - Support for enhanced events compression
         - extend H/W offload packet manipulation capabilities
         - implement IPSec packet offload mode
      - nVidia/Mellanox (mlx4):
         - better big TCP support
      - Netronome Ethernet NICs (nfp):
         - IPsec offload support
         - add support for multicast filter
      - Broadcom:
         - RSS and PTP support improvements
      - AMD/SolarFlare:
         - netlink extened ack improvements
         - add basic flower matches to offload, and related stats
      - Virtual NICs:
         - ibmvnic: introduce affinity hint support
      - small / embedded:
         - FreeScale fec: add initial XDP support
         - Marvel mv643xx_eth: support MII/GMII/RGMII modes for Kirkwood
         - TI am65-cpsw: add suspend/resume support
         - Mediatek MT7986: add RX wireless wthernet dispatch support
         - Realtek 8169: enable GRO software interrupt coalescing per
           default

   - Ethernet high-speed switches:
      - Microchip (sparx5):
         - add support for Sparx5 TC/flower H/W offload via VCAP
      - Mellanox mlxsw:
         - add 802.1X and MAC Authentication Bypass offload support
         - add ip6gre support

   - Embedded Ethernet switches:
      - Mediatek (mtk_eth_soc):
         - improve PCS implementation, add DSA untag support
         - enable flow offload support
      - Renesas:
         - add rswitch R-Car Gen4 gPTP support
      - Microchip (lan966x):
         - add full XDP support
         - add TC H/W offload via VCAP
         - enable PTP on bridge interfaces
      - Microchip (ksz8):
         - add MTU support for KSZ8 series

   - Qualcomm 802.11ax WiFi (ath11k):
      - support configuring channel dwell time during scan

   - MediaTek WiFi (mt76):
      - enable Wireless Ethernet Dispatch (WED) offload support
      - add ack signal support
      - enable coredump support
      - remain_on_channel support

   - Intel WiFi (iwlwifi):
      - enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities
      - 320 MHz channels support

   - RealTek WiFi (rtw89):
      - new dynamic header firmware format support
      - wake-over-WLAN support"

* tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2002 commits)
  ipvs: fix type warning in do_div() on 32 bit
  net: lan966x: Remove a useless test in lan966x_ptp_add_trap()
  net: ipa: add IPA v4.7 support
  dt-bindings: net: qcom,ipa: Add SM6350 compatible
  bnxt: Use generic HBH removal helper in tx path
  IPv6/GRO: generic helper to remove temporary HBH/jumbo header in driver
  selftests: forwarding: Add bridge MDB test
  selftests: forwarding: Rename bridge_mdb test
  bridge: mcast: Support replacement of MDB port group entries
  bridge: mcast: Allow user space to specify MDB entry routing protocol
  bridge: mcast: Allow user space to add (*, G) with a source list and filter mode
  bridge: mcast: Add support for (*, G) with a source list and filter mode
  bridge: mcast: Avoid arming group timer when (S, G) corresponds to a source
  bridge: mcast: Add a flag for user installed source entries
  bridge: mcast: Expose __br_multicast_del_group_src()
  bridge: mcast: Expose br_multicast_new_group_src()
  bridge: mcast: Add a centralized error path
  bridge: mcast: Place netlink policy before validation functions
  bridge: mcast: Split (*, G) and (S, G) addition into different functions
  bridge: mcast: Do not derive entry type from its filter mode
  ...

1 files changed, 126 insertions, 2 deletions

diff --git a/Documentation/networking/devlink/ice.rst b/Documentation/networking/devlink/ice.rst
index 0c89ceb8986d..625efb3777d5 100644
--- a/Documentation/networking/devlink/ice.rst
+++ b/Documentation/networking/devlink/ice.rst
@@ -189,12 +189,21 @@ device data.
     * - ``nvm-flash``
       - The contents of the entire flash chip, sometimes referred to as
         the device's Non Volatile Memory.
+    * - ``shadow-ram``
+      - The contents of the Shadow RAM, which is loaded from the beginning
+        of the flash. Although the contents are primarily from the flash,
+        this area also contains data generated during device boot which is
+        not stored in flash.
     * - ``device-caps``
       - The contents of the device firmware's capabilities buffer. Useful to
         determine the current state and configuration of the device.
 
-Users can request an immediate capture of a snapshot via the
-``DEVLINK_CMD_REGION_NEW``
+Both the ``nvm-flash`` and ``shadow-ram`` regions can be accessed without a
+snapshot. The ``device-caps`` region requires a snapshot as the contents are
+sent by firmware and can't be split into separate reads.
+
+Users can request an immediate capture of a snapshot for all three regions
+via the ``DEVLINK_CMD_REGION_NEW`` command.
 
 .. code:: shell
 
@@ -254,3 +263,118 @@ Users can request an immediate capture of a snapshot via the
     0000000000000210 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 
     $ devlink region delete pci/0000:01:00.0/device-caps snapshot 1
+
+Devlink Rate
+============
+
+The ``ice`` driver implements devlink-rate API. It allows for offload of
+the Hierarchical QoS to the hardware. It enables user to group Virtual
+Functions in a tree structure and assign supported parameters: tx_share,
+tx_max, tx_priority and tx_weight to each node in a tree. So effectively
+user gains an ability to control how much bandwidth is allocated for each
+VF group. This is later enforced by the HW.
+
+It is assumed that this feature is mutually exclusive with DCB performed
+in FW and ADQ, or any driver feature that would trigger changes in QoS,
+for example creation of the new traffic class. The driver will prevent DCB
+or ADQ configuration if user started making any changes to the nodes using
+devlink-rate API. To configure those features a driver reload is necessary.
+Correspondingly if ADQ or DCB will get configured the driver won't export
+hierarchy at all, or will remove the untouched hierarchy if those
+features are enabled after the hierarchy is exported, but before any
+changes are made.
+
+This feature is also dependent on switchdev being enabled in the system.
+It's required bacause devlink-rate requires devlink-port objects to be
+present, and those objects are only created in switchdev mode.
+
+If the driver is set to the switchdev mode, it will export internal
+hierarchy the moment VF's are created. Root of the tree is always
+represented by the node_0. This node can't be deleted by the user. Leaf
+nodes and nodes with children also can't be deleted.
+
+.. list-table:: Attributes supported
+    :widths: 15 85
+
+    * - Name
+      - Description
+    * - ``tx_max``
+      - maximum bandwidth to be consumed by the tree Node. Rate Limit is
+        an absolute number specifying a maximum amount of bytes a Node may
+        consume during the course of one second. Rate limit guarantees
+        that a link will not oversaturate the receiver on the remote end
+        and also enforces an SLA between the subscriber and network
+        provider.
+    * - ``tx_share``
+      - minimum bandwidth allocated to a tree node when it is not blocked.
+        It specifies an absolute BW. While tx_max defines the maximum
+        bandwidth the node may consume, the tx_share marks committed BW
+        for the Node.
+    * - ``tx_priority``
+      - allows for usage of strict priority arbiter among siblings. This
+        arbitration scheme attempts to schedule nodes based on their
+        priority as long as the nodes remain within their bandwidth limit.
+        Range 0-7. Nodes with priority 7 have the highest priority and are
+        selected first, while nodes with priority 0 have the lowest
+        priority. Nodes that have the same priority are treated equally.
+    * - ``tx_weight``
+      - allows for usage of Weighted Fair Queuing arbitration scheme among
+        siblings. This arbitration scheme can be used simultaneously with
+        the strict priority. Range 1-200. Only relative values mater for
+        arbitration.
+
+``tx_priority`` and ``tx_weight`` can be used simultaneously. In that case
+nodes with the same priority form a WFQ subgroup in the sibling group
+and arbitration among them is based on assigned weights.
+
+.. code:: shell
+
+    # enable switchdev
+    $ devlink dev eswitch set pci/0000:4b:00.0 mode switchdev
+
+    # at this point driver should export internal hierarchy
+    $ echo 2 > /sys/class/net/ens785np0/device/sriov_numvfs
+
+    $ devlink port function rate show
+    pci/0000:4b:00.0/node_25: type node parent node_24
+    pci/0000:4b:00.0/node_24: type node parent node_0
+    pci/0000:4b:00.0/node_32: type node parent node_31
+    pci/0000:4b:00.0/node_31: type node parent node_30
+    pci/0000:4b:00.0/node_30: type node parent node_16
+    pci/0000:4b:00.0/node_19: type node parent node_18
+    pci/0000:4b:00.0/node_18: type node parent node_17
+    pci/0000:4b:00.0/node_17: type node parent node_16
+    pci/0000:4b:00.0/node_14: type node parent node_5
+    pci/0000:4b:00.0/node_5: type node parent node_3
+    pci/0000:4b:00.0/node_13: type node parent node_4
+    pci/0000:4b:00.0/node_12: type node parent node_4
+    pci/0000:4b:00.0/node_11: type node parent node_4
+    pci/0000:4b:00.0/node_10: type node parent node_4
+    pci/0000:4b:00.0/node_9: type node parent node_4
+    pci/0000:4b:00.0/node_8: type node parent node_4
+    pci/0000:4b:00.0/node_7: type node parent node_4
+    pci/0000:4b:00.0/node_6: type node parent node_4
+    pci/0000:4b:00.0/node_4: type node parent node_3
+    pci/0000:4b:00.0/node_3: type node parent node_16
+    pci/0000:4b:00.0/node_16: type node parent node_15
+    pci/0000:4b:00.0/node_15: type node parent node_0
+    pci/0000:4b:00.0/node_2: type node parent node_1
+    pci/0000:4b:00.0/node_1: type node parent node_0
+    pci/0000:4b:00.0/node_0: type node
+    pci/0000:4b:00.0/1: type leaf parent node_25
+    pci/0000:4b:00.0/2: type leaf parent node_25
+
+    # let's create some custom node
+    $ devlink port function rate add pci/0000:4b:00.0/node_custom parent node_0
+
+    # second custom node
+    $ devlink port function rate add pci/0000:4b:00.0/node_custom_1 parent node_custom
+
+    # reassign second VF to newly created branch
+    $ devlink port function rate set pci/0000:4b:00.0/2 parent node_custom_1
+
+    # assign tx_weight to the VF
+    $ devlink port function rate set pci/0000:4b:00.0/2 tx_weight 5
+
+    # assign tx_share to the VF
+    $ devlink port function rate set pci/0000:4b:00.0/2 tx_share 500Mbps