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, 101 insertions, 0 deletions

diff --git a/Documentation/translations/zh_CN/mm/numa.rst b/Documentation/translations/zh_CN/mm/numa.rst
new file mode 100644
index 000000000..b15cfeeb6
--- /dev/null
+++ b/Documentation/translations/zh_CN/mm/numa.rst
@@ -0,0 +1,101 @@
+:Original: Documentation/mm/numa.rst
+
+:翻译:
+
+ 司延腾 Yanteng Si <siyanteng@loongson.cn>
+
+:校译:
+
+
+始于1999年11月，作者： <kanoj@sgi.com>
+
+==========================
+何为非统一内存访问(NUMA)？
+==========================
+
+这个问题可以从几个视角来回答：硬件观点和Linux软件视角。
+
+从硬件角度看，NUMA系统是一个由多个组件或装配组成的计算机平台，每个组件可能包含0个或更多的CPU、
+本地内存和/或IO总线。为了简洁起见，并将这些物理组件/装配的硬件视角与软件抽象区分开来，我们在
+本文中称这些组件/装配为“单元”。
+
+每个“单元”都可以看作是系统的一个SMP[对称多处理器]子集——尽管独立的SMP系统所需的一些组件可能
+不会在任何给定的单元上填充。NUMA系统的单元通过某种系统互连连接在一起——例如，交叉开关或点对点
+链接是NUMA系统互连的常见类型。这两种类型的互连都可以聚合起来，以创建NUMA平台，其中的单元与其
+他单元有多个距离。
+
+对于Linux，感兴趣的NUMA平台主要是所谓的缓存相干NUMA--简称ccNUMA系统系统。在ccNUMA系统中，
+所有的内存都是可见的，并且可以从连接到任何单元的任何CPU中访问，缓存一致性是由处理器缓存和/或
+系统互连在硬件中处理。
+
+内存访问时间和有效的内存带宽取决于包含CPU的单元或进行内存访问的IO总线距离包含目标内存的单元
+有多远。例如，连接到同一单元的CPU对内存的访问将比访问其他远程单元的内存经历更快的访问时间和
+更高的带宽。 NUMA平台可以在任何给定单元上访问多种远程距离的（其他）单元。
+
+平台供应商建立NUMA系统并不只是为了让软件开发人员的生活变得有趣。相反，这种架构是提供可扩展
+内存带宽的一种手段。然而，为了实现可扩展的内存带宽，系统和应用软件必须安排大部分的内存引用
+[cache misses]到“本地”内存——同一单元的内存，如果有的话——或者到最近的有内存的单元。
+
+这就自然而然有了Linux软件对NUMA系统的视角:
+
+Linux将系统的硬件资源划分为多个软件抽象，称为“节点”。Linux将节点映射到硬件平台的物理单元
+上，对一些架构的细节进行了抽象。与物理单元一样，软件节点可能包含0或更多的CPU、内存和/或IO
+总线。同样，对“较近”节点的内存访问——映射到较近单元的节点——通常会比对较远单元的访问经历更快
+的访问时间和更高的有效带宽。
+
+对于一些架构，如x86，Linux将“隐藏”任何代表没有内存连接的物理单元的节点，并将连接到该单元
+的任何CPU重新分配到代表有内存的单元的节点上。因此，在这些架构上，我们不能假设Linux将所有
+的CPU与一个给定的节点相关联，会看到相同的本地内存访问时间和带宽。
+
+此外，对于某些架构，同样以x86为例，Linux支持对额外节点的仿真。对于NUMA仿真，Linux会将现
+有的节点或者非NUMA平台的系统内存分割成多个节点。每个模拟的节点将管理底层单元物理内存的一部
+分。NUMA仿真对于在非NUMA平台上测试NUMA内核和应用功能是非常有用的，当与cpusets一起使用时，
+可以作为一种内存资源管理机制。[见 Documentation/admin-guide/cgroup-v1/cpusets.rst]
+
+对于每个有内存的节点，Linux构建了一个独立的内存管理子系统，有自己的空闲页列表、使用中页列表、
+使用统计和锁来调解访问。此外，Linux为每个内存区[DMA、DMA32、NORMAL、HIGH_MEMORY、MOVABLE
+中的一个或多个]构建了一个有序的“区列表”。zonelist指定了当一个选定的区/节点不能满足分配请求
+时要访问的区/节点。当一个区没有可用的内存来满足请求时，这种情况被称为“overflow 溢出”或
+“fallback 回退”。
+
+由于一些节点包含多个包含不同类型内存的区，Linux必须决定是否对区列表进行排序，使分配回退到不同
+节点上的相同区类型，或同一节点上的不同区类型。这是一个重要的考虑因素，因为有些区，如DMA或DMA32，
+代表了相对稀缺的资源。Linux选择了一个默认的Node ordered zonelist。这意味着在使用按NUMA距
+离排序的远程节点之前，它会尝试回退到同一节点的其他分区。
+
+默认情况下，Linux会尝试从执行请求的CPU被分配到的节点中满足内存分配请求。具体来说，Linux将试
+图从请求来源的节点的适当分区列表中的第一个节点进行分配。这被称为“本地分配”。如果“本地”节点不能
+满足请求，内核将检查所选分区列表中其他节点的区域，寻找列表中第一个能满足请求的区域。
+
+本地分配将倾向于保持对分配的内存的后续访问 “本地”的底层物理资源和系统互连——只要内核代表其分配
+一些内存的任务后来不从该内存迁移。Linux调度器知道平台的NUMA拓扑结构——体现在“调度域”数据结构
+中[见 Documentation/scheduler/sched-domains.rst]——并且调度器试图尽量减少任务迁移到遥
+远的调度域中。然而，调度器并没有直接考虑到任务的NUMA足迹。因此，在充分不平衡的情况下，任务可
+以在节点之间迁移，远离其初始节点和内核数据结构。
+
+系统管理员和应用程序设计者可以使用各种CPU亲和命令行接口，如taskset(1)和numactl(1)，以及程
+序接口，如sched_setaffinity(2)，来限制任务的迁移，以改善NUMA定位。此外，人们可以使用
+Linux NUMA内存策略修改内核的默认本地分配行为。 [见
+:ref:`Documentation/admin-guide/mm/numa_memory_policy.rst <numa_memory_policy>`].
+
+系统管理员可以使用控制组和CPUsets限制非特权用户在调度或NUMA命令和功能中可以指定的CPU和节点
+的内存。 [见 Documentation/admin-guide/cgroup-v1/cpusets.rst]
+
+在不隐藏无内存节点的架构上，Linux会在分区列表中只包括有内存的区域[节点]。这意味着对于一个无
+内存的节点，“本地内存节点”——CPU节点的分区列表中的第一个区域的节点——将不是节点本身。相反，它
+将是内核在建立分区列表时选择的离它最近的有内存的节点。所以，默认情况下，本地分配将由内核提供
+最近的可用内存来完成。这是同一机制的结果，该机制允许这种分配在一个包含内存的节点溢出时回退到
+其他附近的节点。
+
+一些内核分配不希望或不能容忍这种分配回退行为。相反，他们想确保他们从指定的节点获得内存，或者
+得到通知说该节点没有空闲内存。例如，当一个子系统分配每个CPU的内存资源时，通常是这种情况。
+
+一个典型的分配模式是使用内核的numa_node_id()或CPU_to_node()函数获得“当前CPU”所在节点的
+节点ID，然后只从返回的节点ID请求内存。当这样的分配失败时，请求的子系统可以恢复到它自己的回退
+路径。板块内核内存分配器就是这样的一个例子。或者，子系统可以选择在分配失败时禁用或不启用自己。
+内核分析子系统就是这样的一个例子。
+
+如果架构支持——不隐藏无内存节点，那么连接到无内存节点的CPU将总是产生回退路径的开销，或者一些
+子系统如果试图完全从无内存的节点分配内存，将无法初始化。为了透明地支持这种架构，内核子系统可
+以使用numa_mem_id()或cpu_to_mem()函数来定位调用或指定CPU的“本地内存节点”。同样，这是同
+一个节点，默认的本地页分配将从这个节点开始尝试。