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/watchdog/watchdog-parameters.rst | 740 +++++++++++++++++++++++++ 1 file changed, 740 insertions(+) create mode 100644 Documentation/watchdog/watchdog-parameters.rst (limited to 'Documentation/watchdog/watchdog-parameters.rst') diff --git a/Documentation/watchdog/watchdog-parameters.rst b/Documentation/watchdog/watchdog-parameters.rst new file mode 100644 index 000000000..29153eed6 --- /dev/null +++ b/Documentation/watchdog/watchdog-parameters.rst @@ -0,0 +1,740 @@ +========================== +WatchDog Module Parameters +========================== + +This file provides information on the module parameters of many of +the Linux watchdog drivers. Watchdog driver parameter specs should +be listed here unless the driver has its own driver-specific information +file. + +See Documentation/admin-guide/kernel-parameters.rst for information on +providing kernel parameters for builtin drivers versus loadable +modules. + +------------------------------------------------- + +watchdog core: + open_timeout: + Maximum time, in seconds, for which the watchdog framework will take + care of pinging a running hardware watchdog until userspace opens the + corresponding /dev/watchdogN device. A value of 0 means an infinite + timeout. Setting this to a non-zero value can be useful to ensure that + either userspace comes up properly, or the board gets reset and allows + fallback logic in the bootloader to try something else. + +------------------------------------------------- + +acquirewdt: + wdt_stop: + Acquire WDT 'stop' io port (default 0x43) + wdt_start: + Acquire WDT 'start' io port (default 0x443) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +advantechwdt: + wdt_stop: + Advantech WDT 'stop' io port (default 0x443) + wdt_start: + Advantech WDT 'start' io port (default 0x443) + timeout: + Watchdog timeout in seconds. 1<= timeout <=63, default=60. + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +alim1535_wdt: + timeout: + Watchdog timeout in seconds. (0 < timeout < 18000, default=60 + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +alim7101_wdt: + timeout: + Watchdog timeout in seconds. (1<=timeout<=3600, default=30 + use_gpio: + Use the gpio watchdog (required by old cobalt boards). + default=0/off/no + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +ar7_wdt: + margin: + Watchdog margin in seconds (default=60) + nowayout: + Disable watchdog shutdown on close + (default=kernel config parameter) + +------------------------------------------------- + +armada_37xx_wdt: + timeout: + Watchdog timeout in seconds. (default=120) + nowayout: + Disable watchdog shutdown on close + (default=kernel config parameter) + +------------------------------------------------- + +at91rm9200_wdt: + wdt_time: + Watchdog time in seconds. (default=5) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +at91sam9_wdt: + heartbeat: + Watchdog heartbeats in seconds. (default = 15) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +bcm47xx_wdt: + wdt_time: + Watchdog time in seconds. (default=30) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +coh901327_wdt: + margin: + Watchdog margin in seconds (default 60s) + +------------------------------------------------- + +cpu5wdt: + port: + base address of watchdog card, default is 0x91 + verbose: + be verbose, default is 0 (no) + ticks: + count down ticks, default is 10000 + +------------------------------------------------- + +cpwd: + wd0_timeout: + Default watchdog0 timeout in 1/10secs + wd1_timeout: + Default watchdog1 timeout in 1/10secs + wd2_timeout: + Default watchdog2 timeout in 1/10secs + +------------------------------------------------- + +da9052wdt: + timeout: + Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +davinci_wdt: + heartbeat: + Watchdog heartbeat period in seconds from 1 to 600, default 60 + +------------------------------------------------- + +ebc-c384_wdt: + timeout: + Watchdog timeout in seconds. (1<=timeout<=15300, default=60) + nowayout: + Watchdog cannot be stopped once started + +------------------------------------------------- + +ep93xx_wdt: + nowayout: + Watchdog cannot be stopped once started + timeout: + Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD) + +------------------------------------------------- + +eurotechwdt: + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + io: + Eurotech WDT io port (default=0x3f0) + irq: + Eurotech WDT irq (default=10) + ev: + Eurotech WDT event type (default is `int`) + +------------------------------------------------- + +gef_wdt: + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +geodewdt: + timeout: + Watchdog timeout in seconds. 1<= timeout <=131, default=60. + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +i6300esb: + heartbeat: + Watchdog heartbeat in seconds. (11 for debug, (default 0) + +------------------------------------------------- + +sa1100_wdt: + margin: + Watchdog margin in seconds (default 60s) + +------------------------------------------------- + +sb_wdog: + timeout: + Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs) + +------------------------------------------------- + +sbc60xxwdt: + wdt_stop: + SBC60xx WDT 'stop' io port (default 0x45) + wdt_start: + SBC60xx WDT 'start' io port (default 0x443) + timeout: + Watchdog timeout in seconds. (1<=timeout<=3600, default=30) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sbc7240_wdt: + timeout: + Watchdog timeout in seconds. (1<=timeout<=255, default=30) + nowayout: + Disable watchdog when closing device file + +------------------------------------------------- + +sbc8360: + timeout: + Index into timeout table (0-63) (default=27 (60s)) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sbc_epx_c3: + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sbc_fitpc2_wdt: + margin: + Watchdog margin in seconds (default 60s) + nowayout: + Watchdog cannot be stopped once started + +------------------------------------------------- + +sbsa_gwdt: + timeout: + Watchdog timeout in seconds. (default 10s) + action: + Watchdog action at the first stage timeout, + set to 0 to ignore, 1 to panic. (default=0) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sc1200wdt: + isapnp: + When set to 0 driver ISA PnP support will be disabled (default=1) + io: + io port + timeout: + range is 0-255 minutes, default is 1 + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sc520_wdt: + timeout: + Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +sch311x_wdt: + force_id: + Override the detected device ID + therm_trip: + Should a ThermTrip trigger the reset generator + timeout: + Watchdog timeout in seconds. 1<= timeout <=15300, default=60 + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +scx200_wdt: + margin: + Watchdog margin in seconds + nowayout: + Disable watchdog shutdown on close + +------------------------------------------------- + +shwdt: + clock_division_ratio: + Clock division ratio. Valid ranges are from 0x5 (1.31ms) + to 0x7 (5.25ms). (default=7) + heartbeat: + Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30 + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +smsc37b787_wdt: + timeout: + range is 1-255 units, default is 60 + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +softdog: + soft_margin: + Watchdog soft_margin in seconds. + (0 < soft_margin < 65536, default=60) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + soft_noboot: + Softdog action, set to 1 to ignore reboots, 0 to reboot + (default=0) + +------------------------------------------------- + +stmp3xxx_wdt: + heartbeat: + Watchdog heartbeat period in seconds from 1 to 4194304, default 19 + +------------------------------------------------- + +tegra_wdt: + heartbeat: + Watchdog heartbeats in seconds. (default = 120) + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +ts72xx_wdt: + timeout: + Watchdog timeout in seconds. (1 <= timeout <= 8, default=8) + nowayout: + Disable watchdog shutdown on close + +------------------------------------------------- + +twl4030_wdt: + nowayout: + Watchdog cannot be stopped once started + (default=kernel config parameter) + +------------------------------------------------- + +txx9wdt: + timeout: + Watchdog timeout in seconds. (0