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, 448 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
new file mode 100644
index 000000000..c659b5498
--- /dev/null
+++ b/drivers/acpi/acpica/rscreate.c
@@ -0,0 +1,448 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/*******************************************************************************
+ *
+ * Module Name: rscreate - Create resource lists/tables
+ *
+ ******************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acresrc.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_RESOURCES
+ACPI_MODULE_NAME("rscreate")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_buffer_to_resource
+ *
+ * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
+ *              aml_buffer_length   - Length of the aml_buffer
+ *              resource_ptr        - Where the converted resource is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a raw AML buffer to a resource list
+ *
+ ******************************************************************************/
+acpi_status
+acpi_buffer_to_resource(u8 *aml_buffer,
+			u16 aml_buffer_length,
+			struct acpi_resource **resource_ptr)
+{
+	acpi_status status;
+	acpi_size list_size_needed;
+	void *resource;
+	void *current_resource_ptr;
+
+	ACPI_FUNCTION_TRACE(acpi_buffer_to_resource);
+
+	/*
+	 * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag
+	 * is not required here.
+	 */
+
+	/* Get the required length for the converted resource */
+
+	status =
+	    acpi_rs_get_list_length(aml_buffer, aml_buffer_length,
+				    &list_size_needed);
+	if (status == AE_AML_NO_RESOURCE_END_TAG) {
+		status = AE_OK;
+	}
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Allocate a buffer for the converted resource */
+
+	resource = ACPI_ALLOCATE_ZEROED(list_size_needed);
+	current_resource_ptr = resource;
+	if (!resource) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	/* Perform the AML-to-Resource conversion */
+
+	status = acpi_ut_walk_aml_resources(NULL, aml_buffer, aml_buffer_length,
+					    acpi_rs_convert_aml_to_resources,
+					    &current_resource_ptr);
+	if (status == AE_AML_NO_RESOURCE_END_TAG) {
+		status = AE_OK;
+	}
+	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(resource);
+	} else {
+		*resource_ptr = resource;
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_buffer_to_resource)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_resource_list
+ *
+ * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
+ *              output_buffer       - Pointer to the user's buffer
+ *
+ * RETURN:      Status: AE_OK if okay, else a valid acpi_status code
+ *              If output_buffer is not large enough, output_buffer_length
+ *              indicates how large output_buffer should be, else it
+ *              indicates how may u8 elements of output_buffer are valid.
+ *
+ * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
+ *              execution and parses the stream to create a linked list
+ *              of device resources.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer,
+			     struct acpi_buffer *output_buffer)
+{
+
+	acpi_status status;
+	u8 *aml_start;
+	acpi_size list_size_needed = 0;
+	u32 aml_buffer_length;
+	void *resource;
+
+	ACPI_FUNCTION_TRACE(rs_create_resource_list);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer));
+
+	/* Params already validated, so we don't re-validate here */
+
+	aml_buffer_length = aml_buffer->buffer.length;
+	aml_start = aml_buffer->buffer.pointer;
+
+	/*
+	 * Pass the aml_buffer into a module that can calculate
+	 * the buffer size needed for the linked list
+	 */
+	status = acpi_rs_get_list_length(aml_start, aml_buffer_length,
+					 &list_size_needed);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n",
+			  status, (u32) list_size_needed));
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Validate/Allocate/Clear caller buffer */
+
+	status = acpi_ut_initialize_buffer(output_buffer, list_size_needed);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Do the conversion */
+
+	resource = output_buffer->pointer;
+	status = acpi_ut_walk_aml_resources(NULL, aml_start, aml_buffer_length,
+					    acpi_rs_convert_aml_to_resources,
+					    &resource);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
+			  output_buffer->pointer, (u32) output_buffer->length));
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_pci_routing_table
+ *
+ * PARAMETERS:  package_object          - Pointer to a package containing one
+ *                                        of more ACPI_OPERAND_OBJECTs
+ *              output_buffer           - Pointer to the user's buffer
+ *
+ * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
+ *              If the output_buffer is too small, the error will be
+ *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
+ *              to the size buffer needed.
+ *
+ * DESCRIPTION: Takes the union acpi_operand_object package and creates a
+ *              linked list of PCI interrupt descriptions
+ *
+ * NOTE: It is the caller's responsibility to ensure that the start of the
+ * output buffer is aligned properly (if necessary).
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
+				 struct acpi_buffer *output_buffer)
+{
+	u8 *buffer;
+	union acpi_operand_object **top_object_list;
+	union acpi_operand_object **sub_object_list;
+	union acpi_operand_object *obj_desc;
+	acpi_size buffer_size_needed = 0;
+	u32 number_of_elements;
+	u32 index;
+	struct acpi_pci_routing_table *user_prt;
+	struct acpi_namespace_node *node;
+	acpi_status status;
+	struct acpi_buffer path_buffer;
+
+	ACPI_FUNCTION_TRACE(rs_create_pci_routing_table);
+
+	/* Params already validated, so we don't re-validate here */
+
+	/* Get the required buffer length */
+
+	status =
+	    acpi_rs_get_pci_routing_table_length(package_object,
+						 &buffer_size_needed);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n",
+			  (u32) buffer_size_needed));
+
+	/* Validate/Allocate/Clear caller buffer */
+
+	status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/*
+	 * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a
+	 * package that in turn contains an u64 Address, a u8 Pin,
+	 * a Name, and a u8 source_index.
+	 */
+	top_object_list = package_object->package.elements;
+	number_of_elements = package_object->package.count;
+	buffer = output_buffer->pointer;
+	user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer);
+
+	for (index = 0; index < number_of_elements; index++) {
+
+		/*
+		 * Point user_prt past this current structure
+		 *
+		 * NOTE: On the first iteration, user_prt->Length will
+		 * be zero because we cleared the return buffer earlier
+		 */
+		buffer += user_prt->length;
+		user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer);
+
+		/*
+		 * Fill in the Length field with the information we have at this
+		 * point. The minus four is to subtract the size of the u8
+		 * Source[4] member because it is added below.
+		 */
+		user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4);
+
+		/* Each subpackage must be of length 4 */
+
+		if ((*top_object_list)->package.count != 4) {
+			ACPI_ERROR((AE_INFO,
+				    "(PRT[%u]) Need package of length 4, found length %u",
+				    index, (*top_object_list)->package.count));
+			return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT);
+		}
+
+		/*
+		 * Dereference the subpackage.
+		 * The sub_object_list will now point to an array of the four IRQ
+		 * elements: [Address, Pin, Source, source_index]
+		 */
+		sub_object_list = (*top_object_list)->package.elements;
+
+		/* 1) First subobject: Dereference the PRT.Address */
+
+		obj_desc = sub_object_list[0];
+		if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) {
+			ACPI_ERROR((AE_INFO,
+				    "(PRT[%u].Address) Need Integer, found %s",
+				    index,
+				    acpi_ut_get_object_type_name(obj_desc)));
+			return_ACPI_STATUS(AE_BAD_DATA);
+		}
+
+		user_prt->address = obj_desc->integer.value;
+
+		/* 2) Second subobject: Dereference the PRT.Pin */
+
+		obj_desc = sub_object_list[1];
+		if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) {
+			ACPI_ERROR((AE_INFO,
+				    "(PRT[%u].Pin) Need Integer, found %s",
+				    index,
+				    acpi_ut_get_object_type_name(obj_desc)));
+			return_ACPI_STATUS(AE_BAD_DATA);
+		}
+
+		user_prt->pin = (u32) obj_desc->integer.value;
+
+		/*
+		 * 3) Third subobject: Dereference the PRT.source_name
+		 * The name may be unresolved (slack mode), so allow a null object
+		 */
+		obj_desc = sub_object_list[2];
+		if (obj_desc) {
+			switch (obj_desc->common.type) {
+			case ACPI_TYPE_LOCAL_REFERENCE:
+
+				if (obj_desc->reference.class !=
+				    ACPI_REFCLASS_NAME) {
+					ACPI_ERROR((AE_INFO,
+						    "(PRT[%u].Source) Need name, found Reference Class 0x%X",
+						    index,
+						    obj_desc->reference.class));
+					return_ACPI_STATUS(AE_BAD_DATA);
+				}
+
+				node = obj_desc->reference.node;
+
+				/* Use *remaining* length of the buffer as max for pathname */
+
+				path_buffer.length = output_buffer->length -
+				    (u32) ((u8 *) user_prt->source -
+					   (u8 *) output_buffer->pointer);
+				path_buffer.pointer = user_prt->source;
+
+				status = acpi_ns_handle_to_pathname((acpi_handle)node, &path_buffer, FALSE);
+				if (ACPI_FAILURE(status)) {
+					return_ACPI_STATUS(status);
+				}
+
+				/* +1 to include null terminator */
+
+				user_prt->length +=
+				    (u32)strlen(user_prt->source) + 1;
+				break;
+
+			case ACPI_TYPE_STRING:
+
+				strcpy(user_prt->source,
+				       obj_desc->string.pointer);
+
+				/*
+				 * Add to the Length field the length of the string
+				 * (add 1 for terminator)
+				 */
+				user_prt->length += obj_desc->string.length + 1;
+				break;
+
+			case ACPI_TYPE_INTEGER:
+				/*
+				 * If this is a number, then the Source Name is NULL, since
+				 * the entire buffer was zeroed out, we can leave this alone.
+				 *
+				 * Add to the Length field the length of the u32 NULL
+				 */
+				user_prt->length += sizeof(u32);
+				break;
+
+			default:
+
+				ACPI_ERROR((AE_INFO,
+					    "(PRT[%u].Source) Need Ref/String/Integer, found %s",
+					    index,
+					    acpi_ut_get_object_type_name
+					    (obj_desc)));
+				return_ACPI_STATUS(AE_BAD_DATA);
+			}
+		}
+
+		/* Now align the current length */
+
+		user_prt->length =
+		    (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length);
+
+		/* 4) Fourth subobject: Dereference the PRT.source_index */
+
+		obj_desc = sub_object_list[3];
+		if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) {
+			ACPI_ERROR((AE_INFO,
+				    "(PRT[%u].SourceIndex) Need Integer, found %s",
+				    index,
+				    acpi_ut_get_object_type_name(obj_desc)));
+			return_ACPI_STATUS(AE_BAD_DATA);
+		}
+
+		user_prt->source_index = (u32) obj_desc->integer.value;
+
+		/* Point to the next union acpi_operand_object in the top level package */
+
+		top_object_list++;
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
+			  output_buffer->pointer, (u32) output_buffer->length));
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_aml_resources
+ *
+ * PARAMETERS:  resource_list           - Pointer to the resource list buffer
+ *              output_buffer           - Where the AML buffer is returned
+ *
+ * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
+ *              If the output_buffer is too small, the error will be
+ *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
+ *              to the size buffer needed.
+ *
+ * DESCRIPTION: Converts a list of device resources to an AML bytestream
+ *              to be used as input for the _SRS control method.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_create_aml_resources(struct acpi_buffer *resource_list,
+			     struct acpi_buffer *output_buffer)
+{
+	acpi_status status;
+	acpi_size aml_size_needed = 0;
+
+	ACPI_FUNCTION_TRACE(rs_create_aml_resources);
+
+	/* Params already validated, no need to re-validate here */
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ResourceList Buffer = %p\n",
+			  resource_list->pointer));
+
+	/* Get the buffer size needed for the AML byte stream */
+
+	status =
+	    acpi_rs_get_aml_length(resource_list->pointer,
+				   resource_list->length, &aml_size_needed);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n",
+			  (u32)aml_size_needed, acpi_format_exception(status)));
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Validate/Allocate/Clear caller buffer */
+
+	status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Do the conversion */
+
+	status = acpi_rs_convert_resources_to_aml(resource_list->pointer,
+						  aml_size_needed,
+						  output_buffer->pointer);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
+			  output_buffer->pointer, (u32) output_buffer->length));
+	return_ACPI_STATUS(AE_OK);
+}