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/exresolv.c | 539 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 539 insertions(+) create mode 100644 drivers/acpi/acpica/exresolv.c (limited to 'drivers/acpi/acpica/exresolv.c') diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c new file mode 100644 index 000000000..61ee7fb46 --- /dev/null +++ b/drivers/acpi/acpica/exresolv.c @@ -0,0 +1,539 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/****************************************************************************** + * + * Module Name: exresolv - AML Interpreter object resolution + * + * Copyright (C) 2000 - 2022, Intel Corp. + * + *****************************************************************************/ + +#include +#include "accommon.h" +#include "amlcode.h" +#include "acdispat.h" +#include "acinterp.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_EXECUTER +ACPI_MODULE_NAME("exresolv") + +/* Local prototypes */ +static acpi_status +acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr, + struct acpi_walk_state *walk_state); + +/******************************************************************************* + * + * FUNCTION: acpi_ex_resolve_to_value + * + * PARAMETERS: **stack_ptr - Points to entry on obj_stack, which can + * be either an (union acpi_operand_object *) + * or an acpi_handle. + * walk_state - Current method state + * + * RETURN: Status + * + * DESCRIPTION: Convert Reference objects to values + * + ******************************************************************************/ + +acpi_status +acpi_ex_resolve_to_value(union acpi_operand_object **stack_ptr, + struct acpi_walk_state *walk_state) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE_PTR(ex_resolve_to_value, stack_ptr); + + if (!stack_ptr || !*stack_ptr) { + ACPI_ERROR((AE_INFO, "Internal - null pointer")); + return_ACPI_STATUS(AE_AML_NO_OPERAND); + } + + /* + * The entity pointed to by the stack_ptr can be either + * 1) A valid union acpi_operand_object, or + * 2) A struct acpi_namespace_node (named_obj) + */ + if (ACPI_GET_DESCRIPTOR_TYPE(*stack_ptr) == ACPI_DESC_TYPE_OPERAND) { + status = acpi_ex_resolve_object_to_value(stack_ptr, walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + if (!*stack_ptr) { + ACPI_ERROR((AE_INFO, "Internal - null pointer")); + return_ACPI_STATUS(AE_AML_NO_OPERAND); + } + } + + /* + * Object on the stack may have changed if acpi_ex_resolve_object_to_value() + * was called (i.e., we can't use an _else_ here.) + */ + if (ACPI_GET_DESCRIPTOR_TYPE(*stack_ptr) == ACPI_DESC_TYPE_NAMED) { + status = + acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR + (struct acpi_namespace_node, + stack_ptr), walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Resolved object %p\n", *stack_ptr)); + return_ACPI_STATUS(AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_resolve_object_to_value + * + * PARAMETERS: stack_ptr - Pointer to an internal object + * walk_state - Current method state + * + * RETURN: Status + * + * DESCRIPTION: Retrieve the value from an internal object. The Reference type + * uses the associated AML opcode to determine the value. + * + ******************************************************************************/ + +static acpi_status +acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr, + struct acpi_walk_state *walk_state) +{ + acpi_status status = AE_OK; + union acpi_operand_object *stack_desc; + union acpi_operand_object *obj_desc = NULL; + u8 ref_type; + + ACPI_FUNCTION_TRACE(ex_resolve_object_to_value); + + stack_desc = *stack_ptr; + + /* This is an object of type union acpi_operand_object */ + + switch (stack_desc->common.type) { + case ACPI_TYPE_LOCAL_REFERENCE: + + ref_type = stack_desc->reference.class; + + switch (ref_type) { + case ACPI_REFCLASS_LOCAL: + case ACPI_REFCLASS_ARG: + /* + * Get the local from the method's state info + * Note: this increments the local's object reference count + */ + status = acpi_ds_method_data_get_value(ref_type, + stack_desc-> + reference.value, + walk_state, + &obj_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "[Arg/Local %X] ValueObj is %p\n", + stack_desc->reference.value, + obj_desc)); + + /* + * Now we can delete the original Reference Object and + * replace it with the resolved value + */ + acpi_ut_remove_reference(stack_desc); + *stack_ptr = obj_desc; + break; + + case ACPI_REFCLASS_INDEX: + + switch (stack_desc->reference.target_type) { + case ACPI_TYPE_BUFFER_FIELD: + + /* Just return - do not dereference */ + break; + + case ACPI_TYPE_PACKAGE: + + /* If method call or copy_object - do not dereference */ + + if ((walk_state->opcode == + AML_INT_METHODCALL_OP) + || (walk_state->opcode == + AML_COPY_OBJECT_OP)) { + break; + } + + /* Otherwise, dereference the package_index to a package element */ + + obj_desc = *stack_desc->reference.where; + if (obj_desc) { + /* + * Valid object descriptor, copy pointer to return value + * (i.e., dereference the package index) + * Delete the ref object, increment the returned object + */ + acpi_ut_add_reference(obj_desc); + *stack_ptr = obj_desc; + } else { + /* + * A NULL object descriptor means an uninitialized element of + * the package, can't dereference it + */ + ACPI_ERROR((AE_INFO, + "Attempt to dereference an Index to " + "NULL package element Idx=%p", + stack_desc)); + status = AE_AML_UNINITIALIZED_ELEMENT; + } + break; + + default: + + /* Invalid reference object */ + + ACPI_ERROR((AE_INFO, + "Unknown TargetType 0x%X in Index/Reference object %p", + stack_desc->reference.target_type, + stack_desc)); + status = AE_AML_INTERNAL; + break; + } + break; + + case ACPI_REFCLASS_REFOF: + case ACPI_REFCLASS_DEBUG: + case ACPI_REFCLASS_TABLE: + + /* Just leave the object as-is, do not dereference */ + + break; + + case ACPI_REFCLASS_NAME: /* Reference to a named object */ + + /* Dereference the name */ + + if ((stack_desc->reference.node->type == + ACPI_TYPE_DEVICE) + || (stack_desc->reference.node->type == + ACPI_TYPE_THERMAL)) { + + /* These node types do not have 'real' subobjects */ + + *stack_ptr = (void *)stack_desc->reference.node; + } else { + /* Get the object pointed to by the namespace node */ + + *stack_ptr = + (stack_desc->reference.node)->object; + acpi_ut_add_reference(*stack_ptr); + } + + acpi_ut_remove_reference(stack_desc); + break; + + default: + + ACPI_ERROR((AE_INFO, + "Unknown Reference type 0x%X in %p", + ref_type, stack_desc)); + status = AE_AML_INTERNAL; + break; + } + break; + + case ACPI_TYPE_BUFFER: + + status = acpi_ds_get_buffer_arguments(stack_desc); + break; + + case ACPI_TYPE_PACKAGE: + + status = acpi_ds_get_package_arguments(stack_desc); + break; + + case ACPI_TYPE_BUFFER_FIELD: + case ACPI_TYPE_LOCAL_REGION_FIELD: + case ACPI_TYPE_LOCAL_BANK_FIELD: + case ACPI_TYPE_LOCAL_INDEX_FIELD: + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "FieldRead SourceDesc=%p Type=%X\n", + stack_desc, stack_desc->common.type)); + + status = + acpi_ex_read_data_from_field(walk_state, stack_desc, + &obj_desc); + + /* Remove a reference to the original operand, then override */ + + acpi_ut_remove_reference(*stack_ptr); + *stack_ptr = (void *)obj_desc; + break; + + default: + + break; + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_resolve_multiple + * + * PARAMETERS: walk_state - Current state (contains AML opcode) + * operand - Starting point for resolution + * return_type - Where the object type is returned + * return_desc - Where the resolved object is returned + * + * RETURN: Status + * + * DESCRIPTION: Return the base object and type. Traverse a reference list if + * necessary to get to the base object. + * + ******************************************************************************/ + +acpi_status +acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state, + union acpi_operand_object *operand, + acpi_object_type *return_type, + union acpi_operand_object **return_desc) +{ + union acpi_operand_object *obj_desc = ACPI_CAST_PTR(void, operand); + struct acpi_namespace_node *node = + ACPI_CAST_PTR(struct acpi_namespace_node, operand); + acpi_object_type type; + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_ex_resolve_multiple); + + /* Operand can be either a namespace node or an operand descriptor */ + + switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) { + case ACPI_DESC_TYPE_OPERAND: + + type = obj_desc->common.type; + break; + + case ACPI_DESC_TYPE_NAMED: + + type = ((struct acpi_namespace_node *)obj_desc)->type; + obj_desc = acpi_ns_get_attached_object(node); + + /* If we had an Alias node, use the attached object for type info */ + + if (type == ACPI_TYPE_LOCAL_ALIAS) { + type = ((struct acpi_namespace_node *)obj_desc)->type; + obj_desc = acpi_ns_get_attached_object((struct + acpi_namespace_node + *)obj_desc); + } + + switch (type) { + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_THERMAL: + + /* These types have no attached subobject */ + break; + + default: + + /* All other types require a subobject */ + + if (!obj_desc) { + ACPI_ERROR((AE_INFO, + "[%4.4s] Node is unresolved or uninitialized", + acpi_ut_get_node_name(node))); + return_ACPI_STATUS(AE_AML_UNINITIALIZED_NODE); + } + break; + } + break; + + default: + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); + } + + /* If type is anything other than a reference, we are done */ + + if (type != ACPI_TYPE_LOCAL_REFERENCE) { + goto exit; + } + + /* + * For reference objects created via the ref_of, Index, or Load/load_table + * operators, we need to get to the base object (as per the ACPI + * specification of the object_type and size_of operators). This means + * traversing the list of possibly many nested references. + */ + while (obj_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) { + switch (obj_desc->reference.class) { + case ACPI_REFCLASS_REFOF: + case ACPI_REFCLASS_NAME: + + /* Dereference the reference pointer */ + + if (obj_desc->reference.class == ACPI_REFCLASS_REFOF) { + node = obj_desc->reference.object; + } else { /* AML_INT_NAMEPATH_OP */ + + node = obj_desc->reference.node; + } + + /* All "References" point to a NS node */ + + if (ACPI_GET_DESCRIPTOR_TYPE(node) != + ACPI_DESC_TYPE_NAMED) { + ACPI_ERROR((AE_INFO, + "Not a namespace node %p [%s]", + node, + acpi_ut_get_descriptor_name(node))); + return_ACPI_STATUS(AE_AML_INTERNAL); + } + + /* Get the attached object */ + + obj_desc = acpi_ns_get_attached_object(node); + if (!obj_desc) { + + /* No object, use the NS node type */ + + type = acpi_ns_get_type(node); + goto exit; + } + + /* Check for circular references */ + + if (obj_desc == operand) { + return_ACPI_STATUS(AE_AML_CIRCULAR_REFERENCE); + } + break; + + case ACPI_REFCLASS_INDEX: + + /* Get the type of this reference (index into another object) */ + + type = obj_desc->reference.target_type; + if (type != ACPI_TYPE_PACKAGE) { + goto exit; + } + + /* + * The main object is a package, we want to get the type + * of the individual package element that is referenced by + * the index. + * + * This could of course in turn be another reference object. + */ + obj_desc = *(obj_desc->reference.where); + if (!obj_desc) { + + /* NULL package elements are allowed */ + + type = 0; /* Uninitialized */ + goto exit; + } + break; + + case ACPI_REFCLASS_TABLE: + + type = ACPI_TYPE_DDB_HANDLE; + goto exit; + + case ACPI_REFCLASS_LOCAL: + case ACPI_REFCLASS_ARG: + + if (return_desc) { + status = + acpi_ds_method_data_get_value(obj_desc-> + reference. + class, + obj_desc-> + reference. + value, + walk_state, + &obj_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + acpi_ut_remove_reference(obj_desc); + } else { + status = + acpi_ds_method_data_get_node(obj_desc-> + reference. + class, + obj_desc-> + reference. + value, + walk_state, + &node); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + obj_desc = acpi_ns_get_attached_object(node); + if (!obj_desc) { + type = ACPI_TYPE_ANY; + goto exit; + } + } + break; + + case ACPI_REFCLASS_DEBUG: + + /* The Debug Object is of type "DebugObject" */ + + type = ACPI_TYPE_DEBUG_OBJECT; + goto exit; + + default: + + ACPI_ERROR((AE_INFO, + "Unknown Reference Class 0x%2.2X", + obj_desc->reference.class)); + return_ACPI_STATUS(AE_AML_INTERNAL); + } + } + + /* + * Now we are guaranteed to have an object that has not been created + * via the ref_of or Index operators. + */ + type = obj_desc->common.type; + +exit: + /* Convert internal types to external types */ + + switch (type) { + case ACPI_TYPE_LOCAL_REGION_FIELD: + case ACPI_TYPE_LOCAL_BANK_FIELD: + case ACPI_TYPE_LOCAL_INDEX_FIELD: + + type = ACPI_TYPE_FIELD_UNIT; + break; + + case ACPI_TYPE_LOCAL_SCOPE: + + /* Per ACPI Specification, Scope is untyped */ + + type = ACPI_TYPE_ANY; + break; + + default: + + /* No change to Type required */ + + break; + } + + *return_type = type; + if (return_desc) { + *return_desc = obj_desc; + } + return_ACPI_STATUS(AE_OK); +} -- cgit v1.2.3