From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- Documentation/ABI/testing/sysfs-firmware-acpi | 250 ++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-firmware-acpi (limited to 'Documentation/ABI/testing/sysfs-firmware-acpi') diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi new file mode 100644 index 000000000..819939d85 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -0,0 +1,250 @@ +What: /sys/firmware/acpi/fpdt/ +Date: Jan 2021 +Contact: Zhang Rui +Description: + ACPI Firmware Performance Data Table (FPDT) provides + information for firmware performance data for system boot, + S3 suspend and S3 resume. This sysfs entry contains the + performance data retrieved from the FPDT. + + boot: + firmware_start_ns: Timer value logged at the beginning + of firmware image execution. In nanoseconds. + bootloader_load_ns: Timer value logged just prior to + loading the OS boot loader into memory. + In nanoseconds. + bootloader_launch_ns: Timer value logged just prior to + launching the currently loaded OS boot loader + image. In nanoseconds. + exitbootservice_start_ns: Timer value logged at the + point when the OS loader calls the + ExitBootServices function for UEFI compatible + firmware. In nanoseconds. + exitbootservice_end_ns: Timer value logged at the point + just prior to the OS loader gaining control + back from the ExitBootServices function for + UEFI compatible firmware. In nanoseconds. + suspend: + suspend_start_ns: Timer value recorded at the previous + OS write to SLP_TYP upon entry to S3. In + nanoseconds. + suspend_end_ns: Timer value recorded at the previous + firmware write to SLP_TYP used to trigger + hardware entry to S3. In nanoseconds. + resume: + resume_count: A count of the number of S3 resume cycles + since the last full boot sequence. + resume_avg_ns: Average timer value of all resume cycles + logged since the last full boot sequence, + including the most recent resume. In nanoseconds. + resume_prev_ns: Timer recorded at the end of the previous + platform runtime firmware S3 resume, just prior to + handoff to the OS waking vector. In nanoseconds. + +What: /sys/firmware/acpi/bgrt/ +Date: January 2012 +Contact: Matthew Garrett +Description: + The BGRT is an ACPI 5.0 feature that allows the OS + to obtain a copy of the firmware boot splash and + some associated metadata. This is intended to be used + by boot splash applications in order to interact with + the firmware boot splash in order to avoid jarring + transitions. + + image: The image bitmap. Currently a 32-bit BMP. + status: 1 if the image is valid, 0 if firmware invalidated it. + type: 0 indicates image is in BMP format. + + ======== =================================================== + version: The version of the BGRT. Currently 1. + xoffset: The number of pixels between the left of the screen + and the left edge of the image. + yoffset: The number of pixels between the top of the screen + and the top edge of the image. + ======== =================================================== + +What: /sys/firmware/acpi/hotplug/ +Date: February 2013 +Contact: Rafael J. Wysocki +Description: + There are separate hotplug profiles for different classes of + devices supported by ACPI, such as containers, memory modules, + processors, PCI root bridges etc. A hotplug profile for a given + class of devices is a collection of settings defining the way + that class of devices will be handled by the ACPI core hotplug + code. Those profiles are represented in sysfs as subdirectories + of /sys/firmware/acpi/hotplug/. + + The following setting is available to user space for each + hotplug profile: + + ======== ======================================================= + enabled: If set, the ACPI core will handle notifications of + hotplug events associated with the given class of + devices and will allow those devices to be ejected with + the help of the _EJ0 control method. Unsetting it + effectively disables hotplug for the correspoinding + class of devices. + ======== ======================================================= + + The value of the above attribute is an integer number: 1 (set) + or 0 (unset). Attempts to write any other values to it will + cause -EINVAL to be returned. + +What: /sys/firmware/acpi/interrupts/ +Date: February 2008 +Contact: Len Brown +Description: + All ACPI interrupts are handled via a single IRQ, + the System Control Interrupt (SCI), which appears + as "acpi" in /proc/interrupts. + + However, one of the main functions of ACPI is to make + the platform understand random hardware without + special driver support. So while the SCI handles a few + well known (fixed feature) interrupts sources, such + as the power button, it can also handle a variable + number of a "General Purpose Events" (GPE). + + A GPE vectors to a specified handler in AML, which + can do a anything the BIOS writer wants from + OS context. GPE 0x12, for example, would vector + to a level or edge handler called _L12 or _E12. + The handler may do its business and return. + Or the handler may send send a Notify event + to a Linux device driver registered on an ACPI device, + such as a battery, or a processor. + + To figure out where all the SCI's are coming from, + /sys/firmware/acpi/interrupts contains a file listing + every possible source, and the count of how many + times it has triggered:: + + $ cd /sys/firmware/acpi/interrupts + $ grep . * + error: 0 + ff_gbl_lock: 0 enable + ff_pmtimer: 0 invalid + ff_pwr_btn: 0 enable + ff_rt_clk: 2 disable + ff_slp_btn: 0 invalid + gpe00: 0 invalid + gpe01: 0 enable + gpe02: 108 enable + gpe03: 0 invalid + gpe04: 0 invalid + gpe05: 0 invalid + gpe06: 0 enable + gpe07: 0 enable + gpe08: 0 invalid + gpe09: 0 invalid + gpe0A: 0 invalid + gpe0B: 0 invalid + gpe0C: 0 invalid + gpe0D: 0 invalid + gpe0E: 0 invalid + gpe0F: 0 invalid + gpe10: 0 invalid + gpe11: 0 invalid + gpe12: 0 invalid + gpe13: 0 invalid + gpe14: 0 invalid + gpe15: 0 invalid + gpe16: 0 invalid + gpe17: 1084 enable + gpe18: 0 enable + gpe19: 0 invalid + gpe1A: 0 invalid + gpe1B: 0 invalid + gpe1C: 0 invalid + gpe1D: 0 invalid + gpe1E: 0 invalid + gpe1F: 0 invalid + gpe_all: 1192 + sci: 1194 + sci_not: 0 + + =========== ================================================== + sci The number of times the ACPI SCI + has been called and claimed an interrupt. + + sci_not The number of times the ACPI SCI + has been called and NOT claimed an interrupt. + + gpe_all count of SCI caused by GPEs. + + gpeXX count for individual GPE source + + ff_gbl_lock Global Lock + + ff_pmtimer PM Timer + + ff_pwr_btn Power Button + + ff_rt_clk Real Time Clock + + ff_slp_btn Sleep Button + + error an interrupt that can't be accounted for above. + + invalid it's either a GPE or a Fixed Event that + doesn't have an event handler. + + disable the GPE/Fixed Event is valid but disabled. + + enable the GPE/Fixed Event is valid and enabled. + =========== ================================================== + + Root has permission to clear any of these counters. Eg.:: + + # echo 0 > gpe11 + + All counters can be cleared by clearing the total "sci":: + + # echo 0 > sci + + None of these counters has an effect on the function + of the system, they are simply statistics. + + Besides this, user can also write specific strings to these files + to enable/disable/clear ACPI interrupts in user space, which can be + used to debug some ACPI interrupt storm issues. + + Note that only writing to VALID GPE/Fixed Event is allowed, + i.e. user can only change the status of runtime GPE and + Fixed Event with event handler installed. + + Let's take power button fixed event for example, please kill acpid + and other user space applications so that the machine won't shutdown + when pressing the power button:: + + # cat ff_pwr_btn + 0 enabled + # press the power button for 3 times; + # cat ff_pwr_btn + 3 enabled + # echo disable > ff_pwr_btn + # cat ff_pwr_btn + 3 disabled + # press the power button for 3 times; + # cat ff_pwr_btn + 3 disabled + # echo enable > ff_pwr_btn + # cat ff_pwr_btn + 4 enabled + /* + * this is because the status bit is set even if the enable + * bit is cleared, and it triggers an ACPI fixed event when + * the enable bit is set again + */ + # press the power button for 3 times; + # cat ff_pwr_btn + 7 enabled + # echo disable > ff_pwr_btn + # press the power button for 3 times; + # echo clear > ff_pwr_btn /* clear the status bit */ + # echo disable > ff_pwr_btn + # cat ff_pwr_btn + 7 enabled + -- cgit v1.2.3