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, 322 insertions, 0 deletions

diff --git a/drivers/platform/x86/intel/int1092/intel_sar.c b/drivers/platform/x86/intel/int1092/intel_sar.c
new file mode 100644
index 000000000..352fc4596
--- /dev/null
+++ b/drivers/platform/x86/intel/int1092/intel_sar.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, Intel Corporation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/kobject.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+#include "intel_sar.h"
+
+/**
+ * get_int_value: Retrieve integer values from ACPI Object
+ * @obj: acpi_object pointer which has the integer value
+ * @out: output pointer will get integer value
+ *
+ * Function is used to retrieve integer value from acpi object.
+ *
+ * Return:
+ * * 0 on success
+ * * -EIO if there is an issue in acpi_object passed.
+ */
+static int get_int_value(union acpi_object *obj, int *out)
+{
+	if (!obj || obj->type != ACPI_TYPE_INTEGER)
+		return -EIO;
+	*out = (int)obj->integer.value;
+	return 0;
+}
+
+/**
+ * update_sar_data: sar data is updated based on regulatory mode
+ * @context: pointer to driver context structure
+ *
+ * sar_data is updated based on regulatory value
+ * context->reg_value will never exceed MAX_REGULATORY
+ */
+static void update_sar_data(struct wwan_sar_context *context)
+{
+	struct wwan_device_mode_configuration *config =
+		&context->config_data[context->reg_value];
+
+	if (config->device_mode_info &&
+	    context->sar_data.device_mode < config->total_dev_mode) {
+		int itr = 0;
+
+		for (itr = 0; itr < config->total_dev_mode; itr++) {
+			if (context->sar_data.device_mode ==
+				config->device_mode_info[itr].device_mode) {
+				struct wwan_device_mode_info *dev_mode =
+				&config->device_mode_info[itr];
+
+				context->sar_data.antennatable_index = dev_mode->antennatable_index;
+				context->sar_data.bandtable_index = dev_mode->bandtable_index;
+				context->sar_data.sartable_index = dev_mode->sartable_index;
+				break;
+			}
+		}
+	}
+}
+
+/**
+ * parse_package: parse acpi package for retrieving SAR information
+ * @context: pointer to driver context structure
+ * @item : acpi_object pointer
+ *
+ * Given acpi_object is iterated to retrieve information for each device mode.
+ * If a given package corresponding to a specific device mode is faulty, it is
+ * skipped and the specific entry in context structure will have the default value
+ * of zero. Decoding of subsequent device modes is realized by having "continue"
+ * statements in the for loop on encountering error in parsing given device mode.
+ *
+ * Return:
+ * AE_OK if success
+ * AE_ERROR on error
+ */
+static acpi_status parse_package(struct wwan_sar_context *context, union acpi_object *item)
+{
+	struct wwan_device_mode_configuration *data;
+	int value, itr, reg;
+	union acpi_object *num;
+
+	num = &item->package.elements[0];
+	if (get_int_value(num, &value) || value < 0 || value >= MAX_REGULATORY)
+		return AE_ERROR;
+
+	reg = value;
+
+	data = &context->config_data[reg];
+	if (data->total_dev_mode > MAX_DEV_MODES ||	data->total_dev_mode == 0 ||
+	    item->package.count <= data->total_dev_mode)
+		return AE_ERROR;
+
+	data->device_mode_info = kmalloc_array(data->total_dev_mode,
+					       sizeof(struct wwan_device_mode_info), GFP_KERNEL);
+	if (!data->device_mode_info)
+		return AE_ERROR;
+
+	for (itr = 0; itr < data->total_dev_mode; itr++) {
+		struct wwan_device_mode_info temp = { 0 };
+
+		num = &item->package.elements[itr + 1];
+		if (num->type != ACPI_TYPE_PACKAGE || num->package.count < TOTAL_DATA)
+			continue;
+		if (get_int_value(&num->package.elements[0], &temp.device_mode))
+			continue;
+		if (get_int_value(&num->package.elements[1], &temp.bandtable_index))
+			continue;
+		if (get_int_value(&num->package.elements[2], &temp.antennatable_index))
+			continue;
+		if (get_int_value(&num->package.elements[3], &temp.sartable_index))
+			continue;
+		data->device_mode_info[itr] = temp;
+	}
+	return AE_OK;
+}
+
+/**
+ * sar_get_device_mode: Extraction of information from BIOS via DSM calls
+ * @device: ACPI device for which to retrieve the data
+ *
+ * Retrieve the current device mode information from the BIOS.
+ *
+ * Return:
+ * AE_OK on success
+ * AE_ERROR on error
+ */
+static acpi_status sar_get_device_mode(struct platform_device *device)
+{
+	struct wwan_sar_context *context = dev_get_drvdata(&device->dev);
+	acpi_status status = AE_OK;
+	union acpi_object *out;
+	u32 rev = 0;
+
+	out = acpi_evaluate_dsm_typed(context->handle, &context->guid, rev,
+				      COMMAND_ID_DEV_MODE, NULL, ACPI_TYPE_INTEGER);
+	if (!out) {
+		dev_err(&device->dev, "DSM cmd:%d Failed to retrieve value\n", COMMAND_ID_DEV_MODE);
+		status = AE_ERROR;
+		goto dev_mode_error;
+	}
+	context->sar_data.device_mode = out->integer.value;
+	update_sar_data(context);
+	sysfs_notify(&device->dev.kobj, NULL, SYSFS_DATANAME);
+
+dev_mode_error:
+	ACPI_FREE(out);
+	return status;
+}
+
+static const struct acpi_device_id sar_device_ids[] = {
+	{ "INTC1092", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, sar_device_ids);
+
+static ssize_t intc_data_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct wwan_sar_context *context = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d %d %d %d\n", context->sar_data.device_mode,
+		      context->sar_data.bandtable_index,
+		      context->sar_data.antennatable_index,
+		      context->sar_data.sartable_index);
+}
+static DEVICE_ATTR_RO(intc_data);
+
+static ssize_t intc_reg_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct wwan_sar_context *context = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", context->reg_value);
+}
+
+static ssize_t intc_reg_store(struct device *dev, struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+	struct wwan_sar_context *context = dev_get_drvdata(dev);
+	unsigned int value;
+	int read;
+
+	if (!count)
+		return -EINVAL;
+	read = kstrtouint(buf, 10, &value);
+	if (read < 0)
+		return read;
+	if (value >= MAX_REGULATORY)
+		return -EOVERFLOW;
+	context->reg_value = value;
+	update_sar_data(context);
+	sysfs_notify(&dev->kobj, NULL, SYSFS_DATANAME);
+	return count;
+}
+static DEVICE_ATTR_RW(intc_reg);
+
+static struct attribute *intcsar_attrs[] = {
+	&dev_attr_intc_data.attr,
+	&dev_attr_intc_reg.attr,
+	NULL
+};
+
+static struct attribute_group intcsar_group = {
+	.attrs = intcsar_attrs,
+};
+
+static void sar_notify(acpi_handle handle, u32 event, void *data)
+{
+	struct platform_device *device = data;
+
+	if (event == SAR_EVENT) {
+		if (sar_get_device_mode(device) != AE_OK)
+			dev_err(&device->dev, "sar_get_device_mode error");
+	}
+}
+
+static void sar_get_data(int reg, struct wwan_sar_context *context)
+{
+	union acpi_object *out, req;
+	u32 rev = 0;
+
+	req.type = ACPI_TYPE_INTEGER;
+	req.integer.value = reg;
+	out = acpi_evaluate_dsm_typed(context->handle, &context->guid, rev,
+				      COMMAND_ID_CONFIG_TABLE, &req, ACPI_TYPE_PACKAGE);
+	if (!out)
+		return;
+	if (out->package.count >= 3 &&
+	    out->package.elements[0].type == ACPI_TYPE_INTEGER &&
+	    out->package.elements[1].type == ACPI_TYPE_INTEGER &&
+	    out->package.elements[2].type == ACPI_TYPE_PACKAGE &&
+	    out->package.elements[2].package.count > 0) {
+		context->config_data[reg].version = out->package.elements[0].integer.value;
+		context->config_data[reg].total_dev_mode =
+			out->package.elements[1].integer.value;
+		if (context->config_data[reg].total_dev_mode <= 0 ||
+		    context->config_data[reg].total_dev_mode > MAX_DEV_MODES) {
+			ACPI_FREE(out);
+			return;
+		}
+		parse_package(context, &out->package.elements[2]);
+	}
+	ACPI_FREE(out);
+}
+
+static int sar_probe(struct platform_device *device)
+{
+	struct wwan_sar_context *context;
+	int reg;
+	int result;
+
+	context = kzalloc(sizeof(*context), GFP_KERNEL);
+	if (!context)
+		return -ENOMEM;
+
+	context->sar_device = device;
+	context->handle = ACPI_HANDLE(&device->dev);
+	dev_set_drvdata(&device->dev, context);
+
+	result = guid_parse(SAR_DSM_UUID, &context->guid);
+	if (result) {
+		dev_err(&device->dev, "SAR UUID parse error: %d\n", result);
+		goto r_free;
+	}
+
+	for (reg = 0; reg < MAX_REGULATORY; reg++)
+		sar_get_data(reg, context);
+
+	if (sar_get_device_mode(device) != AE_OK) {
+		dev_err(&device->dev, "Failed to get device mode\n");
+		result = -EIO;
+		goto r_free;
+	}
+
+	result = sysfs_create_group(&device->dev.kobj, &intcsar_group);
+	if (result) {
+		dev_err(&device->dev, "sysfs creation failed\n");
+		goto r_free;
+	}
+
+	if (acpi_install_notify_handler(ACPI_HANDLE(&device->dev), ACPI_DEVICE_NOTIFY,
+					sar_notify, (void *)device) != AE_OK) {
+		dev_err(&device->dev, "Failed acpi_install_notify_handler\n");
+		result = -EIO;
+		goto r_sys;
+	}
+	return 0;
+
+r_sys:
+	sysfs_remove_group(&device->dev.kobj, &intcsar_group);
+r_free:
+	kfree(context);
+	return result;
+}
+
+static int sar_remove(struct platform_device *device)
+{
+	struct wwan_sar_context *context = dev_get_drvdata(&device->dev);
+	int reg;
+
+	acpi_remove_notify_handler(ACPI_HANDLE(&device->dev),
+				   ACPI_DEVICE_NOTIFY, sar_notify);
+	sysfs_remove_group(&device->dev.kobj, &intcsar_group);
+	for (reg = 0; reg < MAX_REGULATORY; reg++)
+		kfree(context->config_data[reg].device_mode_info);
+
+	kfree(context);
+	return 0;
+}
+
+static struct platform_driver sar_driver = {
+	.probe = sar_probe,
+	.remove = sar_remove,
+	.driver = {
+		.name = DRVNAME,
+		.acpi_match_table = ACPI_PTR(sar_device_ids)
+	}
+};
+module_platform_driver(sar_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Platform device driver for INTEL MODEM BIOS SAR");
+MODULE_AUTHOR("Shravan Sudhakar <s.shravan@intel.com>");