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, 157 insertions, 0 deletions

diff --git a/Documentation/translations/zh_CN/admin-guide/tainted-kernels.rst b/Documentation/translations/zh_CN/admin-guide/tainted-kernels.rst
new file mode 100644
index 000000000..bc51d7cff
--- /dev/null
+++ b/Documentation/translations/zh_CN/admin-guide/tainted-kernels.rst
@@ -0,0 +1,157 @@
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: :doc:`../../../admin-guide/tainted-kernels`
+
+:译者:
+
+ 吴想成 Wu XiangCheng <bobwxc@email.cn>
+
+受污染的内核
+-------------
+
+当发生一些在稍后调查问题时可能相关的事件时，内核会将自己标记为“受污染
+（tainted）”的。不用太过担心，大多数情况下运行受污染的内核没有问题；这些信息
+主要在有人想调查某个问题时才有意义的，因为问题的真正原因可能是导致内核受污染
+的事件。这就是为什么来自受污染内核的缺陷报告常常被开发人员忽略，因此请尝试用
+未受污染的内核重现问题。
+
+请注意，即使在您消除导致污染的原因（亦即卸载专有内核模块）之后，内核仍将保持
+污染状态，以表示内核仍然不可信。这也是为什么内核在注意到内部问题（“kernel
+bug”）、可恢复错误（“kernel oops”）或不可恢复错误（“kernel panic”）时会打印
+受污染状态，并将有关此的调试信息写入日志 ``dmesg`` 输出。也可以通过
+``/proc/`` 中的文件在运行时检查受污染的状态。
+
+
+BUG、Oops或Panics消息中的污染标志
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+在顶部以“CPU:”开头的一行中可以找到受污染的状态；内核是否受到污染和原因会显示
+在进程ID（“PID:”）和触发事件命令的缩写名称（“Comm:”）之后::
+
+	BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
+	Oops: 0002 [#1] SMP PTI
+	CPU: 0 PID: 4424 Comm: insmod Tainted: P        W  O      4.20.0-0.rc6.fc30 #1
+	Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
+	RIP: 0010:my_oops_init+0x13/0x1000 [kpanic]
+	[...]
+
+如果内核在事件发生时没有被污染，您将在那里看到“Not-tainted:”；如果被污染，那
+么它将是“Tainted:”以及字母或空格。在上面的例子中，它看起来是这样的::
+
+	Tainted: P        W  O
+
+下表解释了这些字符的含义。在本例中，由于加载了专有模块（ ``P`` ），出现了
+警告（ ``W`` ），并且加载了外部构建的模块（ ``O`` ），所以内核早些时候受到
+了污染。要解码其他字符，请使用下表。
+
+
+解码运行时的污染状态
+~~~~~~~~~~~~~~~~~~~~~
+
+在运行时，您可以通过读取 ``cat /proc/sys/kernel/tainted`` 来查询受污染状态。
+如果返回 ``0`` ，则内核没有受到污染；任何其他数字都表示受到污染的原因。解码
+这个数字的最简单方法是使用脚本  ``tools/debugging/kernel-chktaint`` ，您的
+发行版可能会将其作为名为 ``linux-tools`` 或 ``kernel-tools`` 的包的一部分提
+供；如果没有，您可以从
+`git.kernel.org <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/tools/debugging/kernel-chktaint>`_
+网站下载此脚本并用 ``sh kernel-chktaint`` 执行，它会在上面引用的日志中有类似
+语句的机器上打印这样的内容::
+
+	Kernel is Tainted for following reasons:
+	 * Proprietary module was loaded (#0)
+	 * Kernel issued warning (#9)
+	 * Externally-built ('out-of-tree') module was loaded  (#12)
+	See Documentation/admin-guide/tainted-kernels.rst in the Linux kernel or
+	 https://www.kernel.org/doc/html/latest/admin-guide/tainted-kernels.html for
+	 a more details explanation of the various taint flags.
+	Raw taint value as int/string: 4609/'P        W  O     '
+
+你也可以试着自己解码这个数字。如果内核被污染的原因只有一个，那么这很简单，
+在本例中您可以通过下表找到数字。如果你需要解码有多个原因的数字，因为它是一
+个位域（bitfield），其中每个位表示一个特定类型的污染的存在或不存在，最好让
+前面提到的脚本来处理。但是如果您需要快速看一下，可以使用这个shell命令来检查
+设置了哪些位::
+
+	$ for i in $(seq 18); do echo $(($i-1)) $(($(cat /proc/sys/kernel/tainted)>>($i-1)&1));done
+
+污染状态代码表
+~~~~~~~~~~~~~~~
+
+===  =====  ======  ========================================================
+ 位  日志     数字  内核被污染的原因
+===  =====  ======  ========================================================
+  0   G/P        1  已加载专用模块
+  1   _/F        2  模块被强制加载
+  2   _/S        4  内核运行在不合规范的系统上
+  3   _/R        8  模块被强制卸载
+  4   _/M       16  处理器报告了机器检测异常（MCE）
+  5   _/B       32  引用了错误的页或某些意外的页标志
+  6   _/U       64  用户空间应用程序请求的污染
+  7   _/D      128  内核最近死机了，即曾出现OOPS或BUG
+  8   _/A      256  ACPI表被用户覆盖
+  9   _/W      512  内核发出警告
+ 10   _/C     1024  已加载staging驱动程序
+ 11   _/I     2048  已应用平台固件缺陷的解决方案
+ 12   _/O     4096  已加载外部构建（“树外”）模块
+ 13   _/E     8192  已加载未签名的模块
+ 14   _/L    16384  发生软锁定
+ 15   _/K    32768  内核已实时打补丁
+ 16   _/X    65536  备用污染，为发行版定义并使用
+ 17   _/T   131072  内核是用结构随机化插件构建的
+===  =====  ======  ========================================================
+
+注：字符 ``_`` 表示空白，以便于阅读表。
+
+污染的更详细解释
+~~~~~~~~~~~~~~~~~
+
+ 0)  ``G`` 加载的所有模块都有GPL或兼容许可证， ``P`` 加载了任何专有模块。
+     没有MODULE_LICENSE（模块许可证）或MODULE_LICENSE未被insmod认可为GPL
+     兼容的模块被认为是专有的。
+
+
+ 1)  ``F`` 任何模块被 ``insmod -f`` 强制加载， ``' '`` 所有模块正常加载。
+
+ 2)  ``S`` 内核运行在不合规范的处理器或系统上：硬件已运行在不受支持的配置中，
+     因此无法保证正确执行。内核将被污染，例如：
+
+     - 在x86上：PAE是通过intel CPU（如Pentium M）上的forcepae强制执行的，这些
+       CPU不报告PAE，但可能有功能实现，SMP内核在非官方支持的SMP Athlon CPU上
+       运行，MSR被暴露到用户空间中。
+     - 在arm上：在某些CPU（如Keystone 2）上运行的内核，没有启用某些内核特性。
+     - 在arm64上：CPU之间存在不匹配的硬件特性，引导加载程序以不同的模式引导CPU。
+     - 某些驱动程序正在被用在不受支持的体系结构上（例如x86_64以外的其他系统
+       上的scsi/snic，非x86/x86_64/itanium上的scsi/ips，已经损坏了arm64上
+       irqchip/irq-gic的固件设置…）。
+
+ 3)  ``R`` 模块被 ``rmmod -f`` 强制卸载， ``' '`` 所有模块都正常卸载。
+
+ 4)  ``M`` 任何处理器报告了机器检测异常， ``' '`` 未发生机器检测异常。
+
+ 5)  ``B`` 页面释放函数发现错误的页面引用或某些意外的页面标志。这表示硬件问题
+     或内核错误；日志中应该有其他信息指示发生此污染的原因。
+
+ 6)  ``U`` 用户或用户应用程序特意请求设置受污染标志，否则应为 ``' '`` 。
+
+ 7)  ``D`` 内核最近死机了，即出现了OOPS或BUG。
+
+ 8)  ``A`` ACPI表被重写。
+
+ 9)  ``W`` 内核之前已发出过警告（尽管有些警告可能会设置更具体的污染标志）。
+
+ 10) ``C`` 已加载staging驱动程序。
+
+ 11) ``I`` 内核正在处理平台固件（BIOS或类似软件）中的严重错误。
+
+ 12) ``O`` 已加载外部构建（“树外”）模块。
+
+ 13) ``E`` 在支持模块签名的内核中加载了未签名的模块。
+
+ 14) ``L`` 系统上先前发生过软锁定。
+
+ 15) ``K`` 内核已经实时打了补丁。
+
+ 16) ``X`` 备用污染，由Linux发行版定义和使用。
+
+ 17) ``T`` 内核构建时使用了randstruct插件，它可以有意生成非常不寻常的内核结构
+     布局（甚至是性能病态的布局），这在调试时非常有用。于构建时设置。