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, 211 insertions, 0 deletions

diff --git a/Documentation/translations/zh_CN/rust/quick-start.rst b/Documentation/translations/zh_CN/rust/quick-start.rst
new file mode 100644
index 000000000..a4b8e8a50
--- /dev/null
+++ b/Documentation/translations/zh_CN/rust/quick-start.rst
@@ -0,0 +1,211 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/rust/quick-start.rst
+
+:翻译:
+
+ 司延腾 Yanteng Si <siyanteng@loongson.cn>
+
+
+快速入门
+========
+
+本文介绍了如何开始使用Rust进行内核开发。
+
+
+构建依赖
+--------
+
+本节描述了如何获取构建所需的工具。
+
+其中一些依赖也许可以从Linux发行版中获得，包名可能是 ``rustc`` , ``rust-src`` ,
+``rust-bindgen`` 等。然而，在写这篇文章的时候，它们很可能还不够新，除非发行版跟踪最
+新的版本。
+
+为了方便检查是否满足要求，可以使用以下目标::
+
+	make LLVM=1 rustavailable
+
+这会触发与Kconfig用来确定是否应该启用 ``RUST_IS_AVAILABLE`` 相同的逻辑；不过，如
+果Kconfig认为不该启用，它会列出未满足的条件。
+
+
+rustc
+*****
+
+需要一个特定版本的Rust编译器。较新的版本可能会也可能不会工作，因为就目前而言，内核依赖
+于一些不稳定的Rust特性。
+
+如果使用的是 ``rustup`` ，请进入检出的源代码目录并运行::
+
+	rustup override set $(scripts/min-tool-version.sh rustc)
+
+或者从以下网址获取一个独立的安装程序或安装 ``rustup`` ：
+
+	https://www.rust-lang.org
+
+
+Rust标准库源代码
+****************
+
+Rust标准库的源代码是必需的，因为构建系统会交叉编译 ``core`` 和 ``alloc`` 。
+
+如果正在使用 ``rustup`` ，请运行::
+
+	rustup component add rust-src
+
+这些组件是按工具链安装的，因此以后升级Rust编译器版本需要重新添加组件。
+
+否则，如果使用独立的安装程序，可以将Rust仓库克隆到工具链的安装文件夹中::
+
+	git clone --recurse-submodules \
+		--branch $(scripts/min-tool-version.sh rustc) \
+		https://github.com/rust-lang/rust \
+		$(rustc --print sysroot)/lib/rustlib/src/rust
+
+在这种情况下，以后升级Rust编译器版本需要手动更新这个克隆的仓库。
+
+
+libclang
+********
+
+``bindgen`` 使用 ``libclang`` （LLVM的一部分）来理解内核中的C代码，这意味着需要安
+装LLVM；同在开启 ``CC=clang`` 或 ``LLVM=1`` 时编译内核一样。
+
+Linux发行版中可能会有合适的包，所以最好先检查一下。
+
+适用于部分系统和架构的二进制文件也可到以下网址下载：
+
+	https://releases.llvm.org/download.html
+
+或者自行构建LLVM，这需要相当长的时间，但并不是一个复杂的过程：
+
+	https://llvm.org/docs/GettingStarted.html#getting-the-source-code-and-building-llvm
+
+请参阅 Documentation/kbuild/llvm.rst 了解更多信息，以及获取预构建版本和发行包
+的进一步方法。
+
+
+bindgen
+*******
+
+内核的C端绑定是在构建时使用 ``bindgen`` 工具生成的。这需要特定的版本。
+
+通过以下方式安装它（注意，这将从源码下载并构建该工具）::
+
+	cargo install --locked --version $(scripts/min-tool-version.sh bindgen) bindgen
+
+
+开发依赖
+--------
+
+本节解释了如何获取开发所需的工具。也就是说，在构建内核时不需要这些工具。
+
+
+rustfmt
+*******
+
+``rustfmt`` 工具被用来自动格式化所有的Rust内核代码，包括生成的C绑定（详情请见
+coding-guidelines.rst ）。
+
+如果使用的是 ``rustup`` ，它的 ``默认`` 配置文件已经安装了这个工具，因此不需要做什么。
+如果使用的是其他配置文件，可以手动安装该组件::
+
+	rustup component add rustfmt
+
+独立的安装程序也带有 ``rustfmt`` 。
+
+
+clippy
+******
+
+``clippy`` 是一个Rust linter。运行它可以为Rust代码提供额外的警告。它可以通过向 ``make``
+传递 ``CLIPPY=1`` 来运行（关于细节，详见 general-information.rst ）。
+
+如果正在使用 ``rustup`` ，它的 ``默认`` 配置文件已经安装了这个工具，因此不需要做什么。
+如果使用的是另一个配置文件，该组件可以被手动安装::
+
+	rustup component add clippy
+
+独立的安装程序也带有 ``clippy`` 。
+
+
+cargo
+*****
+
+``cargo`` 是Rust的本地构建系统。目前需要它来运行测试，因为它被用来构建一个自定义的标准
+库，其中包含了内核中自定义 ``alloc`` 所提供的设施。测试可以使用 ``rusttest`` Make 目标
+来运行。
+
+如果使用的是 ``rustup`` ，所有的配置文件都已经安装了该工具，因此不需要再做什么。
+
+独立的安装程序也带有 ``cargo`` 。
+
+
+rustdoc
+*******
+
+``rustdoc`` 是Rust的文档工具。它为Rust代码生成漂亮的HTML文档（详情请见 general-information.rst ）。
+
+``rustdoc`` 也被用来测试文档化的Rust代码中提供的例子（称为doctests或文档测试）。
+``rusttest`` 是本功能的Make目标。
+
+如果使用的是 ``rustup`` ，所有的配置文件都已经安装了这个工具，因此不需要做什么。
+
+独立的安装程序也带有 ``rustdoc`` 。
+
+
+rust-analyzer
+*************
+
+`rust-analyzer <https://rust-analyzer.github.io/>`_ 语言服务器可以和许多编辑器
+一起使用，以实现语法高亮、补全、转到定义和其他功能。
+
+``rust-analyzer`` 需要一个配置文件， ``rust-project.json``, 它可以由 ``rust-analyzer``
+Make 目标生成。
+
+
+配置
+----
+
+Rust支持（CONFIG_RUST）需要在 ``General setup`` 菜单中启用。在其他要求得到满足的情
+况下，该选项只有在找到合适的Rust工具链时才会显示（见上文）。相应的，这将使依赖Rust的其
+他选项可见。
+
+之后，进入::
+
+	Kernel hacking
+	    -> Sample kernel code
+	        -> Rust samples
+
+并启用一些内置或可加载的样例模块。
+
+
+构建
+----
+
+用完整的LLVM工具链构建内核是目前支持的最佳设置。即::
+
+	make LLVM=1
+
+对于不支持完整LLVM工具链的架构，使用::
+
+	make CC=clang
+
+使用GCC对某些配置也是可行的，但目前它是非常试验性的。
+
+
+折腾
+----
+
+要想深入了解，请看 ``samples/rust/`` 下的样例源代码、 ``rust/`` 下的Rust支持代码和
+``Kernel hacking`` 下的 ``Rust hacking`` 菜单。
+
+如果使用的是GDB/Binutils，而Rust符号没有被demangled，原因是工具链还不支持Rust的新v0
+mangling方案。有几个办法可以解决：
+
+  - 安装一个较新的版本（GDB >= 10.2, Binutils >= 2.36）。
+
+  - 一些版本的GDB（例如vanilla GDB 10.1）能够使用嵌入在调试信息(``CONFIG_DEBUG_INFO``)
+    中的pre-demangled的名字。