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, 146 insertions, 0 deletions

diff --git a/Documentation/translations/zh_CN/filesystems/tmpfs.rst b/Documentation/translations/zh_CN/filesystems/tmpfs.rst
new file mode 100644
index 000000000..6fd9d83b2
--- /dev/null
+++ b/Documentation/translations/zh_CN/filesystems/tmpfs.rst
@@ -0,0 +1,146 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/filesystems/tmpfs.rst
+
+translated by Wang Qing<wangqing@vivo.com>
+
+=====
+Tmpfs
+=====
+
+Tmpfs是一个将所有文件都保存在虚拟内存中的文件系统。
+
+tmpfs中的所有内容都是临时的，也就是说没有任何文件会在硬盘上创建。
+如果卸载tmpfs实例，所有保存在其中的文件都会丢失。
+
+tmpfs将所有文件保存在内核缓存中，随着文件内容增长或缩小可以将不需要的
+页面swap出去。它具有最大限制，可以通过“mount -o remount ...”调整。
+
+和ramfs（创建tmpfs的模板）相比，tmpfs包含交换和限制检查。和tmpfs相似的另
+一个东西是RAM磁盘（/dev/ram*），可以在物理RAM中模拟固定大小的硬盘，并在
+此之上创建一个普通的文件系统。Ramdisks无法swap，因此无法调整它们的大小。
+
+由于tmpfs完全保存于页面缓存和swap中，因此所有tmpfs页面将在/proc/meminfo
+中显示为“Shmem”，而在free(1)中显示为“Shared”。请注意，这些计数还包括
+共享内存(shmem，请参阅ipcs(1))。获得计数的最可靠方法是使用df(1)和du(1)。
+
+tmpfs具有以下用途：
+
+1) 内核总有一个无法看到的内部挂载，用于共享匿名映射和SYSV共享内存。
+
+   挂载不依赖于CONFIG_TMPFS。如果CONFIG_TMPFS未设置，tmpfs对用户不可见。
+   但是内部机制始终存在。
+
+2) glibc 2.2及更高版本期望将tmpfs挂载在/dev/shm上以用于POSIX共享内存
+   (shm_open，shm_unlink)。添加内容到/etc/fstab应注意如下：
+
+	tmpfs	/dev/shm	tmpfs	defaults	0 0
+
+   使用时需要记住创建挂载tmpfs的目录。
+
+   SYSV共享内存无需挂载，内部已默认支持。(在2.3内核版本中，必须挂载
+   tmpfs的前身(shm fs)才能使用SYSV共享内存)
+
+3) 很多人（包括我）都觉的在/tmp和/var/tmp上挂载非常方便，并具有较大的
+   swap分区。目前循环挂载tmpfs可以正常工作，所以大多数发布都应当可以
+   使用mkinitrd通过/tmp访问/tmp。
+
+4) 也许还有更多我不知道的地方:-)
+
+
+tmpfs有三个用于调整大小的挂载选项：
+
+=========  ===========================================================
+size       tmpfs实例分配的字节数限制。默认值是不swap时物理RAM的一半。
+           如果tmpfs实例过大，机器将死锁，因为OOM处理将无法释放该内存。
+nr_blocks  与size相同，但以PAGE_SIZE为单位。
+nr_inodes  tmpfs实例的最大inode个数。默认值是物理内存页数的一半，或者
+           (有高端内存的机器)低端内存RAM的页数，二者以较低者为准。
+=========  ===========================================================
+
+这些参数接受后缀k，m或g表示千，兆和千兆字节，可以在remount时更改。
+size参数也接受后缀％用来限制tmpfs实例占用物理RAM的百分比：
+未指定size或nr_blocks时，默认值为size=50％
+
+如果nr_blocks=0（或size=0），block个数将不受限制；如果nr_inodes=0，
+inode个数将不受限制。这样挂载通常是不明智的，因为它允许任何具有写权限的
+用户通过访问tmpfs耗尽机器上的所有内存；但同时这样做也会增强在多个CPU的
+场景下的访问。
+
+tmpfs具有为所有文件设置NUMA内存分配策略挂载选项(如果启用了CONFIG_NUMA),
+可以通过“mount -o remount ...”调整
+
+======================== =========================
+mpol=default             采用进程分配策略
+                         (请参阅 set_mempolicy(2))
+mpol=prefer:Node         倾向从给定的节点分配
+mpol=bind:NodeList       只允许从指定的链表分配
+mpol=interleave          倾向于依次从每个节点分配
+mpol=interleave:NodeList 依次从每个节点分配
+mpol=local               优先本地节点分配内存
+======================== =========================
+
+NodeList格式是以逗号分隔的十进制数字表示大小和范围，最大和最小范围是用-
+分隔符的十进制数来表示。例如，mpol=bind0-3,5,7,9-15
+
+带有有效NodeList的内存策略将按指定格式保存，在创建文件时使用。当任务在该
+文件系统上创建文件时，会使用到挂载时的内存策略NodeList选项，如果设置的话，
+由调用任务的cpuset[请参见Documentation/admin-guide/cgroup-v1/cpusets.rst]
+以及下面列出的可选标志约束。如果NodeLists为设置为空集，则文件的内存策略将
+恢复为“默认”策略。
+
+NUMA内存分配策略有可选标志，可以用于模式结合。在挂载tmpfs时指定这些可选
+标志可以在NodeList之前生效。
+Documentation/admin-guide/mm/numa_memory_policy.rst列出所有可用的内存
+分配策略模式标志及其对内存策略。
+
+::
+
+	=static		相当于	MPOL_F_STATIC_NODES
+	=relative	相当于	MPOL_F_RELATIVE_NODES
+
+例如，mpol=bind=staticNodeList相当于MPOL_BIND|MPOL_F_STATIC_NODES的分配策略
+
+请注意，如果内核不支持NUMA，那么使用mpol选项挂载tmpfs将会失败；nodelist指定不
+在线的节点也会失败。如果您的系统依赖于此，但内核会运行不带NUMA功能(也许是安全
+revocery内核)，或者具有较少的节点在线，建议从自动模式中省略mpol选项挂载选项。
+可以在以后通过“mount -o remount,mpol=Policy:NodeList MountPoint”添加到挂载点。
+
+要指定初始根目录，可以使用如下挂载选项：
+
+====	====================
+模式	权限用八进制数字表示
+uid	用户ID
+gid	组ID
+====	====================
+
+这些选项对remount没有任何影响。您可以通过chmod(1),chown(1)和chgrp(1)的更改
+已经挂载的参数。
+
+tmpfs具有选择32位还是64位inode的挂载选项：
+
+=======   =============
+inode64   使用64位inode
+inode32   使用32位inode
+=======   =============
+
+在32位内核上，默认是inode32，挂载时指定inode64会被拒绝。
+在64位内核上，默认配置是CONFIG_TMPFS_INODE64。inode64避免了单个设备上可能有多个
+具有相同inode编号的文件；比如32位应用程序使用glibc如果长期访问tmpfs，一旦达到33
+位inode编号，就有EOVERFLOW失败的危险，无法打开大于2GiB的文件，并返回EINVAL。
+
+所以'mount -t tmpfs -o size=10G,nr_inodes=10k,mode=700 tmpfs /mytmpfs'将在
+/mytmpfs上挂载tmpfs实例，分配只能由root用户访问的10GB RAM/SWAP，可以有10240个
+inode的实例。
+
+
+:作者:
+   Christoph Rohland <cr@sap.com>, 1.12.01
+:更新:
+   Hugh Dickins, 4 June 2007
+:更新:
+   KOSAKI Motohiro, 16 Mar 2010
+:更新:
+   Chris Down, 13 July 2020