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, 145 insertions, 0 deletions

diff --git a/Documentation/translations/zh_CN/core-api/errseq.rst b/Documentation/translations/zh_CN/core-api/errseq.rst
new file mode 100644
index 000000000..815fb303e
--- /dev/null
+++ b/Documentation/translations/zh_CN/core-api/errseq.rst
@@ -0,0 +1,145 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/core-api/errseq.rst
+
+:翻译:
+
+ 周彬彬 Binbin Zhou <zhoubinbin@loongson.cn>
+
+:校译:
+
+ 吴想成 Wu Xiangcheng <bobwxc@email.cn>
+
+================
+errseq_t数据类型
+================
+
+``errseq_t`` 是一种在一个地方记录错误的方法，并允许任意数量的 ``订阅者`` 判断自上
+次采样点以来是否发生了变化。
+
+最初的用例是跟踪文件同步系统调用（ ``fsync``, ``fdatasync``, ``msync`` 和
+``sync_file_range`` ）的错误，但它也可以用于其他情况。
+
+它被实现为一个无符号的32位值。低位被指定保存错误代码（在1和MAX_ERRNO之间）。高位
+用作计数器。这里是用原子操作而不是锁来完成的，因此可以从任何上下文中调用这些函数。
+
+请注意，如果频繁记录新错误，则存在冲突风险，因为我们用作计数器的位很少。
+
+为了缓解这种情况，错误值和计数器之间的位被用作一个标志，以判断自记录新值以来是否
+对该值进行了采样。这使我们能够避免在上次记录错误后没有人取样的情况下碰撞计数器。
+
+因此，我们得到了一个类似这样的值：
+
++--------------------------------------+------+------------------------+
+| 31..13                               |  12  | 11..0                  |
++--------------------------------------+------+------------------------+
+| 计数器                               | 标志 | 错误值                 |
++--------------------------------------+------+------------------------+
+
+总体思路是让 ``观察者`` 对errseq_t值进行采样，并将其保留为运行游标。该值稍后可用
+于判断自采样完成后是否发生了任何新错误，并原子地记录检查时的状态。这使得我们能在
+一个地方记录错误，然后有许多 ``观察者`` 可以判断自上次检查以来该值是否发生了变化。
+
+新的errseq_t应始终清零。全零的errseq_t值是从未出现错误的特殊（但常见）情况。因此，
+如果您希望知道自首次初始化以来是否曾经有过错误集，则全零值被用作 ``纪元`` 。
+
+API的使用方法
+=============
+
+让我给你们讲一个关于员工drone的故事。现在，他总体上是个好员工，但公司有点...管理
+繁重。他今天必须向77名主管汇报，明天 ``大老板`` 要从外地赶来，他肯定也会考验这个
+可怜的家伙。
+
+他们都把工作交给他去做---多到他都记不住谁交给他什么了，但这并不是什么大问题。主管
+们只想知道他什么时候完成他们迄今为止交给他的所有工作，以及自从他们上次询问以来他
+是否犯了任何错误。
+
+他可能在他们实际上并没有交给他的工作上犯了错误，但他无法在那么详细的层面上记录事
+情，他所能记得的只是他最近犯的错误。
+
+下面是我们 ``worker_drone`` 的表达式::
+
+        struct worker_drone {
+                errseq_t        wd_err; /* 用来记录错误 */
+        };
+
+每天， ``worker_drone`` 都是以一张白纸开始的::
+
+        struct worker_drone wd;
+
+        wd.wd_err = (errseq_t)0;
+
+主管们进来后对当天的工作进行初步了解。他们并不关心在他们观察开始之前发生的任何事
+情::
+
+        struct supervisor {
+                errseq_t        s_wd_err; /* wd_err的私有“游标” */
+                spinlock_t      s_wd_err_lock; /* 保护s_wd_err */
+        }
+
+        struct supervisor       su;
+
+        su.s_wd_err = errseq_sample(&wd.wd_err);
+        spin_lock_init(&su.s_wd_err_lock);
+
+现在他们开始给他布置任务。每隔几分钟，他们就要求他完成迄今为止交给他的所有工作。
+然后问他是否有犯任何错误::
+
+        spin_lock(&su.su_wd_err_lock);
+        err = errseq_check_and_advance(&wd.wd_err, &su.s_wd_err);
+        spin_unlock(&su.su_wd_err_lock);
+
+到目前为止，它只是不断返回0。
+
+现在，这家公司的老板非常吝啬，给了他不合格的设备来完成他的工作。偶尔设备会出现故
+障，导致他犯错。他重重地叹了一口气，并把它记录下来::
+
+        errseq_set(&wd.wd_err, -EIO);
+
+...然后继续工作。主管们最终会再次检查，他们在下次检查时都会发现这个错误。后续的调
+用将返回0，直到记录下另一个错误，此时将向每个调用报告一次。
+
+请注意，主管们无法知道他们犯了多少错误，只能知道自上次检查以来是否犯了一个错误，
+以及记录的最新值。
+
+偶尔，大老板会来抽查，要求员工为他做一次性的工作。他并不像主管们那样全职观察员工，
+但他确实需要知道在他的工作处理过程中是否发生了错误。
+
+他只需对员工当前的errseq_t进行采样，然后用它来判断后来是否发生了错误::
+
+        errseq_t since = errseq_sample(&wd.wd_err);
+        /* 提交一些工作，等待完成 */
+        err = errseq_check(&wd.wd_err, since);
+
+由于他只是要在那个点之后丢弃 ``since`` ，所以他不需要在这里推进它。同时他也不需要
+任何锁，因为它不能被其他人使用。
+
+序列化更新errseq_t游标
+======================
+
+请注意，errseq_t API在check_and_advance_operation期间不保护errseq_t游标。只有典型
+的错误代码是被原子化处理的。在多任务同时使用同一个errseq_t游标的情况下，对该游标
+的更新进行序列化是很重要的。
+
+如果不这样做，那么游标就有可能向后移动。在这种情况下，同一个错误可能被报告多次。
+
+因此，通常先执行errseq_check检查是否有任何变化，然后在获取锁后才执行
+errseq_check_and_advance。例如::
+
+        if (errseq_check(&wd.wd_err, READ_ONCE(su.s_wd_err)) {
+                /* su.s_wd_err被s_wd_err_lock保护 */
+                spin_lock(&su.s_wd_err_lock);
+                err = errseq_check_and_advance(&wd.wd_err, &su.s_wd_err);
+                spin_unlock(&su.s_wd_err_lock);
+        }
+
+这就避免了自上次检查以来没有任何变化的常见情况下的自旋锁。
+
+函数
+====
+
+该API在以下内核代码中:
+
+lib/errseq.c