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/nseval.c | 306 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 drivers/acpi/acpica/nseval.c (limited to 'drivers/acpi/acpica/nseval.c') diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c new file mode 100644 index 000000000..63748ac69 --- /dev/null +++ b/drivers/acpi/acpica/nseval.c @@ -0,0 +1,306 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/******************************************************************************* + * + * Module Name: nseval - Object evaluation, includes control method execution + * + ******************************************************************************/ + +#include +#include "accommon.h" +#include "acparser.h" +#include "acinterp.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_NAMESPACE +ACPI_MODULE_NAME("nseval") + +/******************************************************************************* + * + * FUNCTION: acpi_ns_evaluate + * + * PARAMETERS: info - Evaluation info block, contains these fields + * and more: + * prefix_node - Prefix or Method/Object Node to execute + * relative_path - Name of method to execute, If NULL, the + * Node is the object to execute + * parameters - List of parameters to pass to the method, + * terminated by NULL. Params itself may be + * NULL if no parameters are being passed. + * parameter_type - Type of Parameter list + * return_object - Where to put method's return value (if + * any). If NULL, no value is returned. + * flags - ACPI_IGNORE_RETURN_VALUE to delete return + * + * RETURN: Status + * + * DESCRIPTION: Execute a control method or return the current value of an + * ACPI namespace object. + * + * MUTEX: Locks interpreter + * + ******************************************************************************/ +acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(ns_evaluate); + + if (!info) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + if (!info->node) { + /* + * Get the actual namespace node for the target object if we + * need to. Handles these cases: + * + * 1) Null node, valid pathname from root (absolute path) + * 2) Node and valid pathname (path relative to Node) + * 3) Node, Null pathname + */ + status = + acpi_ns_get_node(info->prefix_node, info->relative_pathname, + ACPI_NS_NO_UPSEARCH, &info->node); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + /* + * For a method alias, we must grab the actual method node so that + * proper scoping context will be established before execution. + */ + if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) { + info->node = + ACPI_CAST_PTR(struct acpi_namespace_node, + info->node->object); + } + + /* Complete the info block initialization */ + + info->return_object = NULL; + info->node_flags = info->node->flags; + info->obj_desc = acpi_ns_get_attached_object(info->node); + + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", + info->relative_pathname, info->node, + acpi_ns_get_attached_object(info->node))); + + /* Get info if we have a predefined name (_HID, etc.) */ + + info->predefined = + acpi_ut_match_predefined_method(info->node->name.ascii); + + /* Get the full pathname to the object, for use in warning messages */ + + info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE); + if (!info->full_pathname) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + /* Optional object evaluation log */ + + ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION, + "%-26s: %s (%s)\n", " Enter evaluation", + &info->full_pathname[1], + acpi_ut_get_type_name(info->node->type))); + + /* Count the number of arguments being passed in */ + + info->param_count = 0; + if (info->parameters) { + while (info->parameters[info->param_count]) { + info->param_count++; + } + + /* Warn on impossible argument count */ + + if (info->param_count > ACPI_METHOD_NUM_ARGS) { + ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, + ACPI_WARN_ALWAYS, + "Excess arguments (%u) - using only %u", + info->param_count, + ACPI_METHOD_NUM_ARGS)); + + info->param_count = ACPI_METHOD_NUM_ARGS; + } + } + + /* + * For predefined names: Check that the declared argument count + * matches the ACPI spec -- otherwise this is a BIOS error. + */ + acpi_ns_check_acpi_compliance(info->full_pathname, info->node, + info->predefined); + + /* + * For all names: Check that the incoming argument count for + * this method/object matches the actual ASL/AML definition. + */ + acpi_ns_check_argument_count(info->full_pathname, info->node, + info->param_count, info->predefined); + + /* For predefined names: Typecheck all incoming arguments */ + + acpi_ns_check_argument_types(info); + + /* + * Three major evaluation cases: + * + * 1) Object types that cannot be evaluated by definition + * 2) The object is a control method -- execute it + * 3) The object is not a method -- just return it's current value + */ + switch (acpi_ns_get_type(info->node)) { + case ACPI_TYPE_ANY: + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_EVENT: + case ACPI_TYPE_MUTEX: + case ACPI_TYPE_REGION: + case ACPI_TYPE_THERMAL: + case ACPI_TYPE_LOCAL_SCOPE: + /* + * 1) Disallow evaluation of these object types. For these, + * object evaluation is undefined. + */ + ACPI_ERROR((AE_INFO, + "%s: This object type [%s] " + "never contains data and cannot be evaluated", + info->full_pathname, + acpi_ut_get_type_name(info->node->type))); + + status = AE_TYPE; + goto cleanup; + + case ACPI_TYPE_METHOD: + /* + * 2) Object is a control method - execute it + */ + + /* Verify that there is a method object associated with this node */ + + if (!info->obj_desc) { + ACPI_ERROR((AE_INFO, + "%s: Method has no attached sub-object", + info->full_pathname)); + status = AE_NULL_OBJECT; + goto cleanup; + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "**** Execute method [%s] at AML address %p length %X\n", + info->full_pathname, + info->obj_desc->method.aml_start + 1, + info->obj_desc->method.aml_length - 1)); + + /* + * Any namespace deletion must acquire both the namespace and + * interpreter locks to ensure that no thread is using the portion of + * the namespace that is being deleted. + * + * Execute the method via the interpreter. The interpreter is locked + * here before calling into the AML parser + */ + acpi_ex_enter_interpreter(); + status = acpi_ps_execute_method(info); + acpi_ex_exit_interpreter(); + break; + + default: + /* + * 3) All other non-method objects -- get the current object value + */ + + /* + * Some objects require additional resolution steps (e.g., the Node + * may be a field that must be read, etc.) -- we can't just grab + * the object out of the node. + * + * Use resolve_node_to_value() to get the associated value. + * + * NOTE: we can get away with passing in NULL for a walk state because + * the Node is guaranteed to not be a reference to either a method + * local or a method argument (because this interface is never called + * from a running method.) + * + * Even though we do not directly invoke the interpreter for object + * resolution, we must lock it because we could access an op_region. + * The op_region access code assumes that the interpreter is locked. + */ + acpi_ex_enter_interpreter(); + + /* TBD: resolve_node_to_value has a strange interface, fix */ + + info->return_object = + ACPI_CAST_PTR(union acpi_operand_object, info->node); + + status = + acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR + (struct acpi_namespace_node, + &info->return_object), NULL); + acpi_ex_exit_interpreter(); + + if (ACPI_FAILURE(status)) { + info->return_object = NULL; + goto cleanup; + } + + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Returned object %p [%s]\n", + info->return_object, + acpi_ut_get_object_type_name(info-> + return_object))); + + status = AE_CTRL_RETURN_VALUE; /* Always has a "return value" */ + break; + } + + /* + * For predefined names, check the return value against the ACPI + * specification. Some incorrect return value types are repaired. + */ + (void)acpi_ns_check_return_value(info->node, info, info->param_count, + status, &info->return_object); + + /* Check if there is a return value that must be dealt with */ + + if (status == AE_CTRL_RETURN_VALUE) { + + /* If caller does not want the return value, delete it */ + + if (info->flags & ACPI_IGNORE_RETURN_VALUE) { + acpi_ut_remove_reference(info->return_object); + info->return_object = NULL; + } + + /* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */ + + status = AE_OK; + } else if (ACPI_FAILURE(status)) { + + /* If return_object exists, delete it */ + + if (info->return_object) { + acpi_ut_remove_reference(info->return_object); + info->return_object = NULL; + } + } + + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "*** Completed evaluation of object %s ***\n", + info->relative_pathname)); + +cleanup: + /* Optional object evaluation log */ + + ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION, + "%-26s: %s\n", " Exit evaluation", + &info->full_pathname[1])); + + /* + * Namespace was unlocked by the handling acpi_ns* function, so we + * just free the pathname and return + */ + ACPI_FREE(info->full_pathname); + info->full_pathname = NULL; + return_ACPI_STATUS(status); +} -- cgit v1.2.3