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(). ... --- tools/hv/vmbus_testing | 376 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 376 insertions(+) create mode 100755 tools/hv/vmbus_testing (limited to 'tools/hv/vmbus_testing') diff --git a/tools/hv/vmbus_testing b/tools/hv/vmbus_testing new file mode 100755 index 000000000..e7212903d --- /dev/null +++ b/tools/hv/vmbus_testing @@ -0,0 +1,376 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 +# +# Program to allow users to fuzz test Hyper-V drivers +# by interfacing with Hyper-V debugfs attributes. +# Current test methods available: +# 1. delay testing +# +# Current file/directory structure of hyper-V debugfs: +# /sys/kernel/debug/hyperv/UUID +# /sys/kernel/debug/hyperv/UUID/ +# /sys/kernel/debug/hyperv/UUID/ +# +# author: Branden Bonaby + +import os +import cmd +import argparse +import glob +from argparse import RawDescriptionHelpFormatter +from argparse import RawTextHelpFormatter +from enum import Enum + +# Do not change unless, you change the debugfs attributes +# in /drivers/hv/debugfs.c. All fuzz testing +# attributes will start with "fuzz_test". + +# debugfs path for hyperv must exist before proceeding +debugfs_hyperv_path = "/sys/kernel/debug/hyperv" +if not os.path.isdir(debugfs_hyperv_path): + print("{} doesn't exist/check permissions".format(debugfs_hyperv_path)) + exit(-1) + +class dev_state(Enum): + off = 0 + on = 1 + +# File names, that correspond to the files created in +# /drivers/hv/debugfs.c +class f_names(Enum): + state_f = "fuzz_test_state" + buff_f = "fuzz_test_buffer_interrupt_delay" + mess_f = "fuzz_test_message_delay" + +# Both single_actions and all_actions are used +# for error checking and to allow for some subparser +# names to be abbreviated. Do not abbreviate the +# test method names, as it will become less intuitive +# as to what the user can do. If you do decide to +# abbreviate the test method name, make sure the main +# function reflects this change. + +all_actions = [ + "disable_all", + "D", + "enable_all", + "view_all", + "V" +] + +single_actions = [ + "disable_single", + "d", + "enable_single", + "view_single", + "v" +] + +def main(): + + file_map = recursive_file_lookup(debugfs_hyperv_path, dict()) + args = parse_args() + if (not args.action): + print ("Error, no options selected...exiting") + exit(-1) + arg_set = { k for (k,v) in vars(args).items() if v and k != "action" } + arg_set.add(args.action) + path = args.path if "path" in arg_set else None + if (path and path[-1] == "/"): + path = path[:-1] + validate_args_path(path, arg_set, file_map) + if (path and "enable_single" in arg_set): + state_path = locate_state(path, file_map) + set_test_state(state_path, dev_state.on.value, args.quiet) + + # Use subparsers as the key for different actions + if ("delay" in arg_set): + validate_delay_values(args.delay_time) + if (args.enable_all): + set_delay_all_devices(file_map, args.delay_time, + args.quiet) + else: + set_delay_values(path, file_map, args.delay_time, + args.quiet) + elif ("disable_all" in arg_set or "D" in arg_set): + disable_all_testing(file_map) + elif ("disable_single" in arg_set or "d" in arg_set): + disable_testing_single_device(path, file_map) + elif ("view_all" in arg_set or "V" in arg_set): + get_all_devices_test_status(file_map) + elif ("view_single" in arg_set or "v" in arg_set): + get_device_test_values(path, file_map) + +# Get the state location +def locate_state(device, file_map): + return file_map[device][f_names.state_f.value] + +# Validate delay values to make sure they are acceptable to +# enable delays on a device +def validate_delay_values(delay): + + if (delay[0] == -1 and delay[1] == -1): + print("\nError, At least 1 value must be greater than 0") + exit(-1) + for i in delay: + if (i < -1 or i == 0 or i > 1000): + print("\nError, Values must be equal to -1 " + "or be > 0 and <= 1000") + exit(-1) + +# Validate argument path +def validate_args_path(path, arg_set, file_map): + + if (not path and any(element in arg_set for element in single_actions)): + print("Error, path (-p) REQUIRED for the specified option. " + "Use (-h) to check usage.") + exit(-1) + elif (path and any(item in arg_set for item in all_actions)): + print("Error, path (-p) NOT REQUIRED for the specified option. " + "Use (-h) to check usage." ) + exit(-1) + elif (path not in file_map and any(item in arg_set + for item in single_actions)): + print("Error, path '{}' not a valid vmbus device".format(path)) + exit(-1) + +# display Testing status of single device +def get_device_test_values(path, file_map): + + for name in file_map[path]: + file_location = file_map[path][name] + print( name + " = " + str(read_test_files(file_location))) + +# Create a map of the vmbus devices and their associated files +# [key=device, value = [key = filename, value = file path]] +def recursive_file_lookup(path, file_map): + + for f_path in glob.iglob(path + '**/*'): + if (os.path.isfile(f_path)): + if (f_path.rsplit("/",2)[0] == debugfs_hyperv_path): + directory = f_path.rsplit("/",1)[0] + else: + directory = f_path.rsplit("/",2)[0] + f_name = f_path.split("/")[-1] + if (file_map.get(directory)): + file_map[directory].update({f_name:f_path}) + else: + file_map[directory] = {f_name:f_path} + elif (os.path.isdir(f_path)): + recursive_file_lookup(f_path,file_map) + return file_map + +# display Testing state of devices +def get_all_devices_test_status(file_map): + + for device in file_map: + if (get_test_state(locate_state(device, file_map)) is 1): + print("Testing = ON for: {}" + .format(device.split("/")[5])) + else: + print("Testing = OFF for: {}" + .format(device.split("/")[5])) + +# read the vmbus device files, path must be absolute path before calling +def read_test_files(path): + try: + with open(path,"r") as f: + file_value = f.readline().strip() + return int(file_value) + + except IOError as e: + errno, strerror = e.args + print("I/O error({0}): {1} on file {2}" + .format(errno, strerror, path)) + exit(-1) + except ValueError: + print ("Element to int conversion error in: \n{}".format(path)) + exit(-1) + +# writing to vmbus device files, path must be absolute path before calling +def write_test_files(path, value): + + try: + with open(path,"w") as f: + f.write("{}".format(value)) + except IOError as e: + errno, strerror = e.args + print("I/O error({0}): {1} on file {2}" + .format(errno, strerror, path)) + exit(-1) + +# set testing state of device +def set_test_state(state_path, state_value, quiet): + + write_test_files(state_path, state_value) + if (get_test_state(state_path) is 1): + if (not quiet): + print("Testing = ON for device: {}" + .format(state_path.split("/")[5])) + else: + if (not quiet): + print("Testing = OFF for device: {}" + .format(state_path.split("/")[5])) + +# get testing state of device +def get_test_state(state_path): + #state == 1 - test = ON + #state == 0 - test = OFF + return read_test_files(state_path) + +# write 1 - 1000 microseconds, into a single device using the +# fuzz_test_buffer_interrupt_delay and fuzz_test_message_delay +# debugfs attributes +def set_delay_values(device, file_map, delay_length, quiet): + + try: + interrupt = file_map[device][f_names.buff_f.value] + message = file_map[device][f_names.mess_f.value] + + # delay[0]- buffer interrupt delay, delay[1]- message delay + if (delay_length[0] >= 0 and delay_length[0] <= 1000): + write_test_files(interrupt, delay_length[0]) + if (delay_length[1] >= 0 and delay_length[1] <= 1000): + write_test_files(message, delay_length[1]) + if (not quiet): + print("Buffer delay testing = {} for: {}" + .format(read_test_files(interrupt), + interrupt.split("/")[5])) + print("Message delay testing = {} for: {}" + .format(read_test_files(message), + message.split("/")[5])) + except IOError as e: + errno, strerror = e.args + print("I/O error({0}): {1} on files {2}{3}" + .format(errno, strerror, interrupt, message)) + exit(-1) + +# enabling delay testing on all devices +def set_delay_all_devices(file_map, delay, quiet): + + for device in (file_map): + set_test_state(locate_state(device, file_map), + dev_state.on.value, + quiet) + set_delay_values(device, file_map, delay, quiet) + +# disable all testing on a SINGLE device. +def disable_testing_single_device(device, file_map): + + for name in file_map[device]: + file_location = file_map[device][name] + write_test_files(file_location, dev_state.off.value) + print("ALL testing now OFF for {}".format(device.split("/")[-1])) + +# disable all testing on ALL devices +def disable_all_testing(file_map): + + for device in file_map: + disable_testing_single_device(device, file_map) + +def parse_args(): + parser = argparse.ArgumentParser(prog = "vmbus_testing",usage ="\n" + "%(prog)s [delay] [-h] [-e|-E] -t [-p]\n" + "%(prog)s [view_all | V] [-h]\n" + "%(prog)s [disable_all | D] [-h]\n" + "%(prog)s [disable_single | d] [-h|-p]\n" + "%(prog)s [view_single | v] [-h|-p]\n" + "%(prog)s --version\n", + description = "\nUse lsvmbus to get vmbus device type " + "information.\n" "\nThe debugfs root path is " + "/sys/kernel/debug/hyperv", + formatter_class = RawDescriptionHelpFormatter) + subparsers = parser.add_subparsers(dest = "action") + parser.add_argument("--version", action = "version", + version = '%(prog)s 0.1.0') + parser.add_argument("-q","--quiet", action = "store_true", + help = "silence none important test messages." + " This will only work when enabling testing" + " on a device.") + # Use the path parser to hold the --path attribute so it can + # be shared between subparsers. Also do the same for the state + # parser, as all testing methods will use --enable_all and + # enable_single. + path_parser = argparse.ArgumentParser(add_help=False) + path_parser.add_argument("-p","--path", metavar = "", + help = "Debugfs path to a vmbus device. The path " + "must be the absolute path to the device.") + state_parser = argparse.ArgumentParser(add_help=False) + state_group = state_parser.add_mutually_exclusive_group(required = True) + state_group.add_argument("-E", "--enable_all", action = "store_const", + const = "enable_all", + help = "Enable the specified test type " + "on ALL vmbus devices.") + state_group.add_argument("-e", "--enable_single", + action = "store_const", + const = "enable_single", + help = "Enable the specified test type on a " + "SINGLE vmbus device.") + parser_delay = subparsers.add_parser("delay", + parents = [state_parser, path_parser], + help = "Delay the ring buffer interrupt or the " + "ring buffer message reads in microseconds.", + prog = "vmbus_testing", + usage = "%(prog)s [-h]\n" + "%(prog)s -E -t [value] [value]\n" + "%(prog)s -e -t [value] [value] -p", + description = "Delay the ring buffer interrupt for " + "vmbus devices, or delay the ring buffer message " + "reads for vmbus devices (both in microseconds). This " + "is only on the host to guest channel.") + parser_delay.add_argument("-t", "--delay_time", metavar = "", nargs = 2, + type = check_range, default =[0,0], required = (True), + help = "Set [buffer] & [message] delay time. " + "Value constraints: -1 == value " + "or 0 < value <= 1000.\n" + "Use -1 to keep the previous value for that delay " + "type, or a value > 0 <= 1000 to change the delay " + "time.") + parser_dis_all = subparsers.add_parser("disable_all", + aliases = ['D'], prog = "vmbus_testing", + usage = "%(prog)s [disable_all | D] -h\n" + "%(prog)s [disable_all | D]\n", + help = "Disable ALL testing on ALL vmbus devices.", + description = "Disable ALL testing on ALL vmbus " + "devices.") + parser_dis_single = subparsers.add_parser("disable_single", + aliases = ['d'], + parents = [path_parser], prog = "vmbus_testing", + usage = "%(prog)s [disable_single | d] -h\n" + "%(prog)s [disable_single | d] -p\n", + help = "Disable ALL testing on a SINGLE vmbus device.", + description = "Disable ALL testing on a SINGLE vmbus " + "device.") + parser_view_all = subparsers.add_parser("view_all", aliases = ['V'], + help = "View the test state for ALL vmbus devices.", + prog = "vmbus_testing", + usage = "%(prog)s [view_all | V] -h\n" + "%(prog)s [view_all | V]\n", + description = "This shows the test state for ALL the " + "vmbus devices.") + parser_view_single = subparsers.add_parser("view_single", + aliases = ['v'],parents = [path_parser], + help = "View the test values for a SINGLE vmbus " + "device.", + description = "This shows the test values for a SINGLE " + "vmbus device.", prog = "vmbus_testing", + usage = "%(prog)s [view_single | v] -h\n" + "%(prog)s [view_single | v] -p") + + return parser.parse_args() + +# value checking for range checking input in parser +def check_range(arg1): + + try: + val = int(arg1) + except ValueError as err: + raise argparse.ArgumentTypeError(str(err)) + if val < -1 or val > 1000: + message = ("\n\nvalue must be -1 or 0 < value <= 1000. " + "Value program received: {}\n").format(val) + raise argparse.ArgumentTypeError(message) + return val + +if __name__ == "__main__": + main() -- cgit v1.2.3