Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 760 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
new file mode 100644
index 000000000..b082eb942
--- /dev/null
+++ b/drivers/acpi/acpica/dswexec.c
@@ -0,0 +1,760 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: dswexec - Dispatcher method execution callbacks;
+ *                        dispatch to interpreter.
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+#ifdef ACPI_EXEC_APP
+#include "aecommon.h"
+#endif
+
+#define _COMPONENT          ACPI_DISPATCHER
+ACPI_MODULE_NAME("dswexec")
+
+/*
+ * Dispatch table for opcode classes
+ */
+static acpi_execute_op acpi_gbl_op_type_dispatch[] = {
+	acpi_ex_opcode_0A_0T_1R,
+	acpi_ex_opcode_1A_0T_0R,
+	acpi_ex_opcode_1A_0T_1R,
+	NULL,			/* Was: acpi_ex_opcode_1A_0T_0R (Was for Load operator) */
+	acpi_ex_opcode_1A_1T_1R,
+	acpi_ex_opcode_2A_0T_0R,
+	acpi_ex_opcode_2A_0T_1R,
+	acpi_ex_opcode_2A_1T_1R,
+	acpi_ex_opcode_2A_2T_1R,
+	acpi_ex_opcode_3A_0T_0R,
+	acpi_ex_opcode_3A_1T_1R,
+	acpi_ex_opcode_6A_0T_1R
+};
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_get_predicate_value
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              result_obj      - if non-zero, pop result from result stack
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get the result of a predicate evaluation
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state,
+			    union acpi_operand_object *result_obj)
+{
+	acpi_status status = AE_OK;
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *local_obj_desc = NULL;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_get_predicate_value, walk_state);
+
+	walk_state->control_state->common.state = 0;
+
+	if (result_obj) {
+		status = acpi_ds_result_pop(&obj_desc, walk_state);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not get result from predicate evaluation"));
+
+			return_ACPI_STATUS(status);
+		}
+	} else {
+		status = acpi_ds_create_operand(walk_state, walk_state->op, 0);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
+
+		status =
+		    acpi_ex_resolve_to_value(&walk_state->operands[0],
+					     walk_state);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
+
+		obj_desc = walk_state->operands[0];
+	}
+
+	if (!obj_desc) {
+		ACPI_ERROR((AE_INFO,
+			    "No predicate ObjDesc=%p State=%p",
+			    obj_desc, walk_state));
+
+		return_ACPI_STATUS(AE_AML_NO_OPERAND);
+	}
+
+	/*
+	 * Result of predicate evaluation must be an Integer
+	 * object. Implicitly convert the argument if necessary.
+	 */
+	status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc,
+					    ACPI_IMPLICIT_CONVERSION);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	if (local_obj_desc->common.type != ACPI_TYPE_INTEGER) {
+		ACPI_ERROR((AE_INFO,
+			    "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
+			    obj_desc, walk_state, obj_desc->common.type));
+
+		status = AE_AML_OPERAND_TYPE;
+		goto cleanup;
+	}
+
+	/* Truncate the predicate to 32-bits if necessary */
+
+	(void)acpi_ex_truncate_for32bit_table(local_obj_desc);
+
+	/*
+	 * Save the result of the predicate evaluation on
+	 * the control stack
+	 */
+	if (local_obj_desc->integer.value) {
+		walk_state->control_state->common.value = TRUE;
+	} else {
+		/*
+		 * Predicate is FALSE, we will just toss the
+		 * rest of the package
+		 */
+		walk_state->control_state->common.value = FALSE;
+		status = AE_CTRL_FALSE;
+	}
+
+	/* Predicate can be used for an implicit return value */
+
+	(void)acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE);
+
+cleanup:
+
+	ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+			  "Completed a predicate eval=%X Op=%p\n",
+			  walk_state->control_state->common.value,
+			  walk_state->op));
+
+	/* Break to debugger to display result */
+
+	acpi_db_display_result_object(local_obj_desc, walk_state);
+
+	/*
+	 * Delete the predicate result object (we know that
+	 * we don't need it anymore)
+	 */
+	if (local_obj_desc != obj_desc) {
+		acpi_ut_remove_reference(local_obj_desc);
+	}
+	acpi_ut_remove_reference(obj_desc);
+
+	walk_state->control_state->common.state = ACPI_CONTROL_NORMAL;
+	return_ACPI_STATUS(status);
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_exec_begin_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              out_op          - Where to return op if a new one is created
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Descending callback used during the execution of control
+ *              methods. This is where most operators and operands are
+ *              dispatched to the interpreter.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state,
+		      union acpi_parse_object **out_op)
+{
+	union acpi_parse_object *op;
+	acpi_status status = AE_OK;
+	u32 opcode_class;
+
+	ACPI_FUNCTION_TRACE_PTR(ds_exec_begin_op, walk_state);
+
+	op = walk_state->op;
+	if (!op) {
+		status = acpi_ds_load2_begin_op(walk_state, out_op);
+		if (ACPI_FAILURE(status)) {
+			goto error_exit;
+		}
+
+		op = *out_op;
+		walk_state->op = op;
+		walk_state->opcode = op->common.aml_opcode;
+		walk_state->op_info =
+		    acpi_ps_get_opcode_info(op->common.aml_opcode);
+
+		if (acpi_ns_opens_scope(walk_state->op_info->object_type)) {
+			ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+					  "(%s) Popping scope for Op %p\n",
+					  acpi_ut_get_type_name(walk_state->
+								op_info->
+								object_type),
+					  op));
+
+			status = acpi_ds_scope_stack_pop(walk_state);
+			if (ACPI_FAILURE(status)) {
+				goto error_exit;
+			}
+		}
+	}
+
+	if (op == walk_state->origin) {
+		if (out_op) {
+			*out_op = op;
+		}
+
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/*
+	 * If the previous opcode was a conditional, this opcode
+	 * must be the beginning of the associated predicate.
+	 * Save this knowledge in the current scope descriptor
+	 */
+	if ((walk_state->control_state) &&
+	    (walk_state->control_state->common.state ==
+	     ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+				  "Exec predicate Op=%p State=%p\n",
+				  op, walk_state));
+
+		walk_state->control_state->common.state =
+		    ACPI_CONTROL_PREDICATE_EXECUTING;
+
+		/* Save start of predicate */
+
+		walk_state->control_state->control.predicate_op = op;
+	}
+
+	opcode_class = walk_state->op_info->class;
+
+	/* We want to send namepaths to the load code */
+
+	if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+		opcode_class = AML_CLASS_NAMED_OBJECT;
+	}
+
+	/*
+	 * Handle the opcode based upon the opcode type
+	 */
+	switch (opcode_class) {
+	case AML_CLASS_CONTROL:
+
+		status = acpi_ds_exec_begin_control_op(walk_state, op);
+		break;
+
+	case AML_CLASS_NAMED_OBJECT:
+
+		if (walk_state->walk_type & ACPI_WALK_METHOD) {
+			/*
+			 * Found a named object declaration during method execution;
+			 * we must enter this object into the namespace. The created
+			 * object is temporary and will be deleted upon completion of
+			 * the execution of this method.
+			 *
+			 * Note 10/2010: Except for the Scope() op. This opcode does
+			 * not actually create a new object, it refers to an existing
+			 * object. However, for Scope(), we want to indeed open a
+			 * new scope.
+			 */
+			if (op->common.aml_opcode != AML_SCOPE_OP) {
+				status =
+				    acpi_ds_load2_begin_op(walk_state, NULL);
+			} else {
+				status =
+				    acpi_ds_scope_stack_push(op->named.node,
+							     op->named.node->
+							     type, walk_state);
+				if (ACPI_FAILURE(status)) {
+					return_ACPI_STATUS(status);
+				}
+			}
+		}
+		break;
+
+	case AML_CLASS_EXECUTE:
+	case AML_CLASS_CREATE:
+
+		break;
+
+	default:
+
+		break;
+	}
+
+	/* Nothing to do here during method execution */
+
+	return_ACPI_STATUS(status);
+
+error_exit:
+	status = acpi_ds_method_error(status, walk_state);
+	return_ACPI_STATUS(status);
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_exec_end_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Ascending callback used during the execution of control
+ *              methods. The only thing we really need to do here is to
+ *              notice the beginning of IF, ELSE, and WHILE blocks.
+ *
+ ****************************************************************************/
+
+acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
+{
+	union acpi_parse_object *op;
+	acpi_status status = AE_OK;
+	u32 op_type;
+	u32 op_class;
+	union acpi_parse_object *next_op;
+	union acpi_parse_object *first_arg;
+#ifdef ACPI_EXEC_APP
+	char *namepath;
+	union acpi_operand_object *obj_desc;
+#endif
+
+	ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state);
+
+	op = walk_state->op;
+	op_type = walk_state->op_info->type;
+	op_class = walk_state->op_info->class;
+
+	if (op_class == AML_CLASS_UNKNOWN) {
+		ACPI_ERROR((AE_INFO, "Unknown opcode 0x%X",
+			    op->common.aml_opcode));
+		return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
+	}
+
+	first_arg = op->common.value.arg;
+
+	/* Init the walk state */
+
+	walk_state->num_operands = 0;
+	walk_state->operand_index = 0;
+	walk_state->return_desc = NULL;
+	walk_state->result_obj = NULL;
+
+	/* Call debugger for single step support (DEBUG build only) */
+
+	status = acpi_db_single_step(walk_state, op, op_class);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Decode the Opcode Class */
+
+	switch (op_class) {
+	case AML_CLASS_ARGUMENT:	/* Constants, literals, etc. */
+
+		if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
+			status = acpi_ds_evaluate_name_path(walk_state);
+			if (ACPI_FAILURE(status)) {
+				goto cleanup;
+			}
+		}
+		break;
+
+	case AML_CLASS_EXECUTE:	/* Most operators with arguments */
+
+		/* Build resolved operand stack */
+
+		status = acpi_ds_create_operands(walk_state, first_arg);
+		if (ACPI_FAILURE(status)) {
+			goto cleanup;
+		}
+
+		/*
+		 * All opcodes require operand resolution, with the only exceptions
+		 * being the object_type and size_of operators as well as opcodes that
+		 * take no arguments.
+		 */
+		if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE) &&
+		    (walk_state->op_info->flags & AML_HAS_ARGS)) {
+
+			/* Resolve all operands */
+
+			status = acpi_ex_resolve_operands(walk_state->opcode,
+							  &(walk_state->
+							    operands
+							    [walk_state->
+							     num_operands - 1]),
+							  walk_state);
+		}
+
+		if (ACPI_SUCCESS(status)) {
+			/*
+			 * Dispatch the request to the appropriate interpreter handler
+			 * routine. There is one routine per opcode "type" based upon the
+			 * number of opcode arguments and return type.
+			 */
+			status =
+			    acpi_gbl_op_type_dispatch[op_type] (walk_state);
+		} else {
+			/*
+			 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
+			 * Local is uninitialized.
+			 */
+			if ((status == AE_AML_UNINITIALIZED_LOCAL) &&
+			    (walk_state->opcode == AML_STORE_OP) &&
+			    (walk_state->operands[0]->common.type ==
+			     ACPI_TYPE_LOCAL_REFERENCE)
+			    && (walk_state->operands[1]->common.type ==
+				ACPI_TYPE_LOCAL_REFERENCE)
+			    && (walk_state->operands[0]->reference.class ==
+				walk_state->operands[1]->reference.class)
+			    && (walk_state->operands[0]->reference.value ==
+				walk_state->operands[1]->reference.value)) {
+				status = AE_OK;
+			} else {
+				ACPI_EXCEPTION((AE_INFO, status,
+						"While resolving operands for [%s]",
+						acpi_ps_get_opcode_name
+						(walk_state->opcode)));
+			}
+		}
+
+		/* Always delete the argument objects and clear the operand stack */
+
+		acpi_ds_clear_operands(walk_state);
+
+		/*
+		 * If a result object was returned from above, push it on the
+		 * current result stack
+		 */
+		if (ACPI_SUCCESS(status) && walk_state->result_obj) {
+			status =
+			    acpi_ds_result_push(walk_state->result_obj,
+						walk_state);
+		}
+		break;
+
+	default:
+
+		switch (op_type) {
+		case AML_TYPE_CONTROL:	/* Type 1 opcode, IF/ELSE/WHILE/NOOP */
+
+			/* 1 Operand, 0 external_result, 0 internal_result */
+
+			status = acpi_ds_exec_end_control_op(walk_state, op);
+
+			break;
+
+		case AML_TYPE_METHOD_CALL:
+			/*
+			 * If the method is referenced from within a package
+			 * declaration, it is not a invocation of the method, just
+			 * a reference to it.
+			 */
+			if ((op->asl.parent) &&
+			    ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP)
+			     || (op->asl.parent->asl.aml_opcode ==
+				 AML_VARIABLE_PACKAGE_OP))) {
+				ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+						  "Method Reference in a Package, Op=%p\n",
+						  op));
+
+				op->common.node = (struct acpi_namespace_node *)
+				    op->asl.value.arg->asl.node;
+				acpi_ut_add_reference(op->asl.value.arg->asl.
+						      node->object);
+				return_ACPI_STATUS(AE_OK);
+			}
+
+			ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+					  "Method invocation, Op=%p\n", op));
+
+			/*
+			 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
+			 * the method Node pointer
+			 */
+			/* next_op points to the op that holds the method name */
+
+			next_op = first_arg;
+
+			/* next_op points to first argument op */
+
+			next_op = next_op->common.next;
+
+			/*
+			 * Get the method's arguments and put them on the operand stack
+			 */
+			status = acpi_ds_create_operands(walk_state, next_op);
+			if (ACPI_FAILURE(status)) {
+				break;
+			}
+
+			/*
+			 * Since the operands will be passed to another control method,
+			 * we must resolve all local references here (Local variables,
+			 * arguments to *this* method, etc.)
+			 */
+			status = acpi_ds_resolve_operands(walk_state);
+			if (ACPI_FAILURE(status)) {
+
+				/* On error, clear all resolved operands */
+
+				acpi_ds_clear_operands(walk_state);
+				break;
+			}
+
+			/*
+			 * Tell the walk loop to preempt this running method and
+			 * execute the new method
+			 */
+			status = AE_CTRL_TRANSFER;
+
+			/*
+			 * Return now; we don't want to disturb anything,
+			 * especially the operand count!
+			 */
+			return_ACPI_STATUS(status);
+
+		case AML_TYPE_CREATE_FIELD:
+
+			ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+					  "Executing CreateField Buffer/Index Op=%p\n",
+					  op));
+
+			status = acpi_ds_load2_end_op(walk_state);
+			if (ACPI_FAILURE(status)) {
+				break;
+			}
+
+			status =
+			    acpi_ds_eval_buffer_field_operands(walk_state, op);
+			if (ACPI_FAILURE(status)) {
+				break;
+			}
+#ifdef ACPI_EXEC_APP
+			/*
+			 * acpi_exec support for namespace initialization file (initialize
+			 * buffer_fields in this code.)
+			 */
+			namepath =
+			    acpi_ns_get_external_pathname(op->common.node);
+			status = ae_lookup_init_file_entry(namepath, &obj_desc);
+			if (ACPI_SUCCESS(status)) {
+				status =
+				    acpi_ex_write_data_to_field(obj_desc,
+								op->common.
+								node->object,
+								NULL);
+				if (ACPI_FAILURE(status)) {
+					ACPI_EXCEPTION((AE_INFO, status,
+							"While writing to buffer field"));
+				}
+			}
+			ACPI_FREE(namepath);
+			status = AE_OK;
+#endif
+			break;
+
+		case AML_TYPE_CREATE_OBJECT:
+
+			ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+					  "Executing CreateObject (Buffer/Package) Op=%p Child=%p ParentOpcode=%4.4X\n",
+					  op, op->named.value.arg,
+					  op->common.parent->common.
+					  aml_opcode));
+
+			switch (op->common.parent->common.aml_opcode) {
+			case AML_NAME_OP:
+				/*
+				 * Put the Node on the object stack (Contains the ACPI Name
+				 * of this object)
+				 */
+				walk_state->operands[0] = (void *)
+				    op->common.parent->common.node;
+				walk_state->num_operands = 1;
+
+				status = acpi_ds_create_node(walk_state,
+							     op->common.parent->
+							     common.node,
+							     op->common.parent);
+				if (ACPI_FAILURE(status)) {
+					break;
+				}
+
+				ACPI_FALLTHROUGH;
+
+			case AML_INT_EVAL_SUBTREE_OP:
+
+				status =
+				    acpi_ds_eval_data_object_operands
+				    (walk_state, op,
+				     acpi_ns_get_attached_object(op->common.
+								 parent->common.
+								 node));
+				break;
+
+			default:
+
+				status =
+				    acpi_ds_eval_data_object_operands
+				    (walk_state, op, NULL);
+				break;
+			}
+
+			/*
+			 * If a result object was returned from above, push it on the
+			 * current result stack
+			 */
+			if (walk_state->result_obj) {
+				status =
+				    acpi_ds_result_push(walk_state->result_obj,
+							walk_state);
+			}
+			break;
+
+		case AML_TYPE_NAMED_FIELD:
+		case AML_TYPE_NAMED_COMPLEX:
+		case AML_TYPE_NAMED_SIMPLE:
+		case AML_TYPE_NAMED_NO_OBJ:
+
+			status = acpi_ds_load2_end_op(walk_state);
+			if (ACPI_FAILURE(status)) {
+				break;
+			}
+
+			if (op->common.aml_opcode == AML_REGION_OP) {
+				ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+						  "Executing OpRegion Address/Length Op=%p\n",
+						  op));
+
+				status =
+				    acpi_ds_eval_region_operands(walk_state,
+								 op);
+				if (ACPI_FAILURE(status)) {
+					break;
+				}
+			} else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
+				ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+						  "Executing DataTableRegion Strings Op=%p\n",
+						  op));
+
+				status =
+				    acpi_ds_eval_table_region_operands
+				    (walk_state, op);
+				if (ACPI_FAILURE(status)) {
+					break;
+				}
+			} else if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
+				ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+						  "Executing BankField Op=%p\n",
+						  op));
+
+				status =
+				    acpi_ds_eval_bank_field_operands(walk_state,
+								     op);
+				if (ACPI_FAILURE(status)) {
+					break;
+				}
+			}
+			break;
+
+		case AML_TYPE_UNDEFINED:
+
+			ACPI_ERROR((AE_INFO,
+				    "Undefined opcode type Op=%p", op));
+			return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
+
+		case AML_TYPE_BOGUS:
+
+			ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+					  "Internal opcode=%X type Op=%p\n",
+					  walk_state->opcode, op));
+			break;
+
+		default:
+
+			ACPI_ERROR((AE_INFO,
+				    "Unimplemented opcode, class=0x%X "
+				    "type=0x%X Opcode=0x%X Op=%p",
+				    op_class, op_type, op->common.aml_opcode,
+				    op));
+
+			status = AE_NOT_IMPLEMENTED;
+			break;
+		}
+	}
+
+	/*
+	 * ACPI 2.0 support for 64-bit integers: Truncate numeric
+	 * result value if we are executing from a 32-bit ACPI table
+	 */
+	(void)acpi_ex_truncate_for32bit_table(walk_state->result_obj);
+
+	/*
+	 * Check if we just completed the evaluation of a
+	 * conditional predicate
+	 */
+	if ((ACPI_SUCCESS(status)) &&
+	    (walk_state->control_state) &&
+	    (walk_state->control_state->common.state ==
+	     ACPI_CONTROL_PREDICATE_EXECUTING) &&
+	    (walk_state->control_state->control.predicate_op == op)) {
+		status =
+		    acpi_ds_get_predicate_value(walk_state,
+						walk_state->result_obj);
+		walk_state->result_obj = NULL;
+	}
+
+cleanup:
+
+	if (walk_state->result_obj) {
+
+		/* Break to debugger to display result */
+
+		acpi_db_display_result_object(walk_state->result_obj,
+					      walk_state);
+
+		/*
+		 * Delete the result op if and only if:
+		 * Parent will not use the result -- such as any
+		 * non-nested type2 op in a method (parent will be method)
+		 */
+		acpi_ds_delete_result_if_not_used(op, walk_state->result_obj,
+						  walk_state);
+	}
+#ifdef _UNDER_DEVELOPMENT
+
+	if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) {
+		acpi_db_method_end(walk_state);
+	}
+#endif
+
+	/* Invoke exception handler on error */
+
+	if (ACPI_FAILURE(status)) {
+		status = acpi_ds_method_error(status, walk_state);
+	}
+
+	/* Always clear the object stack */
+
+	walk_state->num_operands = 0;
+	return_ACPI_STATUS(status);
+}