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(). ... --- drivers/acpi/acpica/utstrtoul64.c | 327 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 drivers/acpi/acpica/utstrtoul64.c (limited to 'drivers/acpi/acpica/utstrtoul64.c') diff --git a/drivers/acpi/acpica/utstrtoul64.c b/drivers/acpi/acpica/utstrtoul64.c new file mode 100644 index 000000000..5fde619a8 --- /dev/null +++ b/drivers/acpi/acpica/utstrtoul64.c @@ -0,0 +1,327 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/******************************************************************************* + * + * Module Name: utstrtoul64 - String-to-integer conversion support for both + * 64-bit and 32-bit integers + * + ******************************************************************************/ + +#include +#include "accommon.h" + +#define _COMPONENT ACPI_UTILITIES +ACPI_MODULE_NAME("utstrtoul64") + +/******************************************************************************* + * + * This module contains the top-level string to 64/32-bit unsigned integer + * conversion functions: + * + * 1) A standard strtoul() function that supports 64-bit integers, base + * 8/10/16, with integer overflow support. This is used mainly by the + * iASL compiler, which implements tighter constraints on integer + * constants than the runtime (interpreter) integer-to-string conversions. + * 2) Runtime "Explicit conversion" as defined in the ACPI specification. + * 3) Runtime "Implicit conversion" as defined in the ACPI specification. + * + * Current users of this module: + * + * iASL - Preprocessor (constants and math expressions) + * iASL - Main parser, conversion of constants to integers + * iASL - Data Table Compiler parser (constants and math expressions) + * interpreter - Implicit and explicit conversions, GPE method names + * interpreter - Repair code for return values from predefined names + * debugger - Command line input string conversion + * acpi_dump - ACPI table physical addresses + * acpi_exec - Support for namespace overrides + * + * Notes concerning users of these interfaces: + * + * acpi_gbl_integer_byte_width is used to set the 32/64 bit limit for explicit + * and implicit conversions. This global must be set to the proper width. + * For the core ACPICA code, the width depends on the DSDT version. For the + * acpi_ut_strtoul64 interface, all conversions are 64 bits. This interface is + * used primarily for iASL, where the default width is 64 bits for all parsers, + * but error checking is performed later to flag cases where a 64-bit constant + * is wrongly defined in a 32-bit DSDT/SSDT. + * + * In ACPI, the only place where octal numbers are supported is within + * the ASL language itself. This is implemented via the main acpi_ut_strtoul64 + * interface. According the ACPI specification, there is no ACPI runtime + * support (explicit/implicit) for octal string conversions. + * + ******************************************************************************/ +/******************************************************************************* + * + * FUNCTION: acpi_ut_strtoul64 + * + * PARAMETERS: string - Null terminated input string, + * must be a valid pointer + * return_value - Where the converted integer is + * returned. Must be a valid pointer + * + * RETURN: Status and converted integer. Returns an exception on a + * 64-bit numeric overflow + * + * DESCRIPTION: Convert a string into an unsigned integer. Always performs a + * full 64-bit conversion, regardless of the current global + * integer width. Supports Decimal, Hex, and Octal strings. + * + * Current users of this function: + * + * iASL - Preprocessor (constants and math expressions) + * iASL - Main ASL parser, conversion of ASL constants to integers + * iASL - Data Table Compiler parser (constants and math expressions) + * interpreter - Repair code for return values from predefined names + * acpi_dump - ACPI table physical addresses + * acpi_exec - Support for namespace overrides + * + ******************************************************************************/ +acpi_status acpi_ut_strtoul64(char *string, u64 *return_value) +{ + acpi_status status = AE_OK; + u8 original_bit_width; + u32 base = 10; /* Default is decimal */ + + ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string); + + *return_value = 0; + + /* A NULL return string returns a value of zero */ + + if (*string == 0) { + return_ACPI_STATUS(AE_OK); + } + + if (!acpi_ut_remove_whitespace(&string)) { + return_ACPI_STATUS(AE_OK); + } + + /* + * 1) Check for a hex constant. A "0x" prefix indicates base 16. + */ + if (acpi_ut_detect_hex_prefix(&string)) { + base = 16; + } + + /* + * 2) Check for an octal constant, defined to be a leading zero + * followed by sequence of octal digits (0-7) + */ + else if (acpi_ut_detect_octal_prefix(&string)) { + base = 8; + } + + if (!acpi_ut_remove_leading_zeros(&string)) { + return_ACPI_STATUS(AE_OK); /* Return value 0 */ + } + + /* + * Force a full 64-bit conversion. The caller (usually iASL) must + * check for a 32-bit overflow later as necessary (If current mode + * is 32-bit, meaning a 32-bit DSDT). + */ + original_bit_width = acpi_gbl_integer_bit_width; + acpi_gbl_integer_bit_width = 64; + + /* + * Perform the base 8, 10, or 16 conversion. A 64-bit numeric overflow + * will return an exception (to allow iASL to flag the statement). + */ + switch (base) { + case 8: + status = acpi_ut_convert_octal_string(string, return_value); + break; + + case 10: + status = acpi_ut_convert_decimal_string(string, return_value); + break; + + case 16: + default: + status = acpi_ut_convert_hex_string(string, return_value); + break; + } + + /* Only possible exception from above is a 64-bit overflow */ + + acpi_gbl_integer_bit_width = original_bit_width; + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_implicit_strtoul64 + * + * PARAMETERS: string - Null terminated input string, + * must be a valid pointer + * + * RETURN: Converted integer + * + * DESCRIPTION: Perform a 64-bit conversion with restrictions placed upon + * an "implicit conversion" by the ACPI specification. Used by + * many ASL operators that require an integer operand, and support + * an automatic (implicit) conversion from a string operand + * to the final integer operand. The major restriction is that + * only hex strings are supported. + * + * ----------------------------------------------------------------------------- + * + * Base is always 16, either with or without the 0x prefix. Decimal and + * Octal strings are not supported, as per the ACPI specification. + * + * Examples (both are hex values): + * Add ("BA98", Arg0, Local0) + * Subtract ("0x12345678", Arg1, Local1) + * + * Conversion rules as extracted from the ACPI specification: + * + * The converted integer is initialized to the value zero. + * The ASCII string is always interpreted as a hexadecimal constant. + * + * 1) According to the ACPI specification, a "0x" prefix is not allowed. + * However, ACPICA allows this as an ACPI extension on general + * principle. (NO ERROR) + * + * 2) The conversion terminates when the size of an integer is reached + * (32 or 64 bits). There are no numeric overflow conditions. (NO ERROR) + * + * 3) The first non-hex character terminates the conversion and returns + * the current accumulated value of the converted integer (NO ERROR). + * + * 4) Conversion of a null (zero-length) string to an integer is + * technically not allowed. However, ACPICA allows this as an ACPI + * extension. The conversion returns the value 0. (NO ERROR) + * + * NOTE: There are no error conditions returned by this function. At + * the minimum, a value of zero is returned. + * + * Current users of this function: + * + * interpreter - All runtime implicit conversions, as per ACPI specification + * iASL - Data Table Compiler parser (constants and math expressions) + * + ******************************************************************************/ + +u64 acpi_ut_implicit_strtoul64(char *string) +{ + u64 converted_integer = 0; + + ACPI_FUNCTION_TRACE_STR(ut_implicit_strtoul64, string); + + if (!acpi_ut_remove_whitespace(&string)) { + return_VALUE(0); + } + + /* + * Per the ACPI specification, only hexadecimal is supported for + * implicit conversions, and the "0x" prefix is "not allowed". + * However, allow a "0x" prefix as an ACPI extension. + */ + acpi_ut_remove_hex_prefix(&string); + + if (!acpi_ut_remove_leading_zeros(&string)) { + return_VALUE(0); + } + + /* + * Ignore overflow as per the ACPI specification. This is implemented by + * ignoring the return status from the conversion function called below. + * On overflow, the input string is simply truncated. + */ + acpi_ut_convert_hex_string(string, &converted_integer); + return_VALUE(converted_integer); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_explicit_strtoul64 + * + * PARAMETERS: string - Null terminated input string, + * must be a valid pointer + * + * RETURN: Converted integer + * + * DESCRIPTION: Perform a 64-bit conversion with the restrictions placed upon + * an "explicit conversion" by the ACPI specification. The + * main restriction is that only hex and decimal are supported. + * + * ----------------------------------------------------------------------------- + * + * Base is either 10 (default) or 16 (with 0x prefix). Octal (base 8) strings + * are not supported, as per the ACPI specification. + * + * Examples: + * to_integer ("1000") Decimal + * to_integer ("0xABCD") Hex + * + * Conversion rules as extracted from the ACPI specification: + * + * 1) The input string is either a decimal or hexadecimal numeric string. + * A hex value must be prefixed by "0x" or it is interpreted as decimal. + * + * 2) The value must not exceed the maximum of an integer value + * (32 or 64 bits). The ACPI specification states the behavior is + * "unpredictable", so ACPICA matches the behavior of the implicit + * conversion case. There are no numeric overflow conditions. (NO ERROR) + * + * 3) Behavior on the first non-hex character is not defined by the ACPI + * specification (for the to_integer operator), so ACPICA matches the + * behavior of the implicit conversion case. It terminates the + * conversion and returns the current accumulated value of the converted + * integer. (NO ERROR) + * + * 4) Conversion of a null (zero-length) string to an integer is + * technically not allowed. However, ACPICA allows this as an ACPI + * extension. The conversion returns the value 0. (NO ERROR) + * + * NOTE: There are no error conditions returned by this function. At the + * minimum, a value of zero is returned. + * + * Current users of this function: + * + * interpreter - Runtime ASL to_integer operator, as per the ACPI specification + * + ******************************************************************************/ + +u64 acpi_ut_explicit_strtoul64(char *string) +{ + u64 converted_integer = 0; + u32 base = 10; /* Default is decimal */ + + ACPI_FUNCTION_TRACE_STR(ut_explicit_strtoul64, string); + + if (!acpi_ut_remove_whitespace(&string)) { + return_VALUE(0); + } + + /* + * Only Hex and Decimal are supported, as per the ACPI specification. + * A "0x" prefix indicates hex; otherwise decimal is assumed. + */ + if (acpi_ut_detect_hex_prefix(&string)) { + base = 16; + } + + if (!acpi_ut_remove_leading_zeros(&string)) { + return_VALUE(0); + } + + /* + * Ignore overflow as per the ACPI specification. This is implemented by + * ignoring the return status from the conversion functions called below. + * On overflow, the input string is simply truncated. + */ + switch (base) { + case 10: + default: + acpi_ut_convert_decimal_string(string, &converted_integer); + break; + + case 16: + acpi_ut_convert_hex_string(string, &converted_integer); + break; + } + + return_VALUE(converted_integer); +} -- cgit v1.2.3