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, 265 insertions, 0 deletions

diff --git a/drivers/platform/surface/surfacepro3_button.c b/drivers/platform/surface/surfacepro3_button.c
new file mode 100644
index 000000000..2755601f9
--- /dev/null
+++ b/drivers/platform/surface/surfacepro3_button.c
@@ -0,0 +1,265 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * power/home/volume button support for
+ * Microsoft Surface Pro 3/4 tablet.
+ *
+ * Copyright (c) 2015 Intel Corporation.
+ * All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/acpi.h>
+#include <acpi/button.h>
+
+#define SURFACE_PRO3_BUTTON_HID		"MSHW0028"
+#define SURFACE_PRO4_BUTTON_HID		"MSHW0040"
+#define SURFACE_BUTTON_OBJ_NAME		"VGBI"
+#define SURFACE_BUTTON_DEVICE_NAME	"Surface Pro 3/4 Buttons"
+
+#define MSHW0040_DSM_REVISION		0x01
+#define MSHW0040_DSM_GET_OMPR		0x02	// get OEM Platform Revision
+static const guid_t MSHW0040_DSM_UUID =
+	GUID_INIT(0x6fd05c69, 0xcde3, 0x49f4, 0x95, 0xed, 0xab, 0x16, 0x65,
+		  0x49, 0x80, 0x35);
+
+#define SURFACE_BUTTON_NOTIFY_TABLET_MODE	0xc8
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_POWER	0xc6
+#define SURFACE_BUTTON_NOTIFY_RELEASE_POWER	0xc7
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_HOME	0xc4
+#define SURFACE_BUTTON_NOTIFY_RELEASE_HOME	0xc5
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_UP	0xc0
+#define SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_UP	0xc1
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_DOWN		0xc2
+#define SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_DOWN	0xc3
+
+MODULE_AUTHOR("Chen Yu");
+MODULE_DESCRIPTION("Surface Pro3 Button Driver");
+MODULE_LICENSE("GPL v2");
+
+/*
+ * Power button, Home button, Volume buttons support is supposed to
+ * be covered by drivers/input/misc/soc_button_array.c, which is implemented
+ * according to "Windows ACPI Design Guide for SoC Platforms".
+ * However surface pro3 seems not to obey the specs, instead it uses
+ * device VGBI(MSHW0028) for dispatching the events.
+ * We choose acpi_driver rather than platform_driver/i2c_driver because
+ * although VGBI has an i2c resource connected to i2c controller, it
+ * is not embedded in any i2c controller's scope, thus neither platform_device
+ * will be created, nor i2c_client will be enumerated, we have to use
+ * acpi_driver.
+ */
+static const struct acpi_device_id surface_button_device_ids[] = {
+	{SURFACE_PRO3_BUTTON_HID,    0},
+	{SURFACE_PRO4_BUTTON_HID,    0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, surface_button_device_ids);
+
+struct surface_button {
+	unsigned int type;
+	struct input_dev *input;
+	char phys[32];			/* for input device */
+	unsigned long pushed;
+	bool suspended;
+};
+
+static void surface_button_notify(struct acpi_device *device, u32 event)
+{
+	struct surface_button *button = acpi_driver_data(device);
+	struct input_dev *input;
+	int key_code = KEY_RESERVED;
+	bool pressed = false;
+
+	switch (event) {
+	/* Power button press,release handle */
+	case SURFACE_BUTTON_NOTIFY_PRESS_POWER:
+		pressed = true;
+		fallthrough;
+	case SURFACE_BUTTON_NOTIFY_RELEASE_POWER:
+		key_code = KEY_POWER;
+		break;
+	/* Home button press,release handle */
+	case SURFACE_BUTTON_NOTIFY_PRESS_HOME:
+		pressed = true;
+		fallthrough;
+	case SURFACE_BUTTON_NOTIFY_RELEASE_HOME:
+		key_code = KEY_LEFTMETA;
+		break;
+	/* Volume up button press,release handle */
+	case SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_UP:
+		pressed = true;
+		fallthrough;
+	case SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_UP:
+		key_code = KEY_VOLUMEUP;
+		break;
+	/* Volume down button press,release handle */
+	case SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_DOWN:
+		pressed = true;
+		fallthrough;
+	case SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_DOWN:
+		key_code = KEY_VOLUMEDOWN;
+		break;
+	case SURFACE_BUTTON_NOTIFY_TABLET_MODE:
+		dev_warn_once(&device->dev, "Tablet mode is not supported\n");
+		break;
+	default:
+		dev_info_ratelimited(&device->dev,
+				     "Unsupported event [0x%x]\n", event);
+		break;
+	}
+	input = button->input;
+	if (key_code == KEY_RESERVED)
+		return;
+	if (pressed)
+		pm_wakeup_dev_event(&device->dev, 0, button->suspended);
+	if (button->suspended)
+		return;
+	input_report_key(input, key_code, pressed?1:0);
+	input_sync(input);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int surface_button_suspend(struct device *dev)
+{
+	struct acpi_device *device = to_acpi_device(dev);
+	struct surface_button *button = acpi_driver_data(device);
+
+	button->suspended = true;
+	return 0;
+}
+
+static int surface_button_resume(struct device *dev)
+{
+	struct acpi_device *device = to_acpi_device(dev);
+	struct surface_button *button = acpi_driver_data(device);
+
+	button->suspended = false;
+	return 0;
+}
+#endif
+
+/*
+ * Surface Pro 4 and Surface Book 2 / Surface Pro 2017 use the same device
+ * ID (MSHW0040) for the power/volume buttons. Make sure this is the right
+ * device by checking for the _DSM method and OEM Platform Revision.
+ *
+ * Returns true if the driver should bind to this device, i.e. the device is
+ * either MSWH0028 (Pro 3) or MSHW0040 on a Pro 4 or Book 1.
+ */
+static bool surface_button_check_MSHW0040(struct acpi_device *dev)
+{
+	acpi_handle handle = dev->handle;
+	union acpi_object *result;
+	u64 oem_platform_rev = 0;	// valid revisions are nonzero
+
+	// get OEM platform revision
+	result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID,
+					 MSHW0040_DSM_REVISION,
+					 MSHW0040_DSM_GET_OMPR,
+					 NULL, ACPI_TYPE_INTEGER);
+
+	/*
+	 * If evaluating the _DSM fails, the method is not present. This means
+	 * that we have either MSHW0028 or MSHW0040 on Pro 4 or Book 1, so we
+	 * should use this driver. We use revision 0 indicating it is
+	 * unavailable.
+	 */
+
+	if (result) {
+		oem_platform_rev = result->integer.value;
+		ACPI_FREE(result);
+	}
+
+	dev_dbg(&dev->dev, "OEM Platform Revision %llu\n", oem_platform_rev);
+
+	return oem_platform_rev == 0;
+}
+
+
+static int surface_button_add(struct acpi_device *device)
+{
+	struct surface_button *button;
+	struct input_dev *input;
+	const char *hid = acpi_device_hid(device);
+	char *name;
+	int error;
+
+	if (strncmp(acpi_device_bid(device), SURFACE_BUTTON_OBJ_NAME,
+	    strlen(SURFACE_BUTTON_OBJ_NAME)))
+		return -ENODEV;
+
+	if (!surface_button_check_MSHW0040(device))
+		return -ENODEV;
+
+	button = kzalloc(sizeof(struct surface_button), GFP_KERNEL);
+	if (!button)
+		return -ENOMEM;
+
+	device->driver_data = button;
+	button->input = input = input_allocate_device();
+	if (!input) {
+		error = -ENOMEM;
+		goto err_free_button;
+	}
+
+	name = acpi_device_name(device);
+	strcpy(name, SURFACE_BUTTON_DEVICE_NAME);
+	snprintf(button->phys, sizeof(button->phys), "%s/buttons", hid);
+
+	input->name = name;
+	input->phys = button->phys;
+	input->id.bustype = BUS_HOST;
+	input->dev.parent = &device->dev;
+	input_set_capability(input, EV_KEY, KEY_POWER);
+	input_set_capability(input, EV_KEY, KEY_LEFTMETA);
+	input_set_capability(input, EV_KEY, KEY_VOLUMEUP);
+	input_set_capability(input, EV_KEY, KEY_VOLUMEDOWN);
+
+	error = input_register_device(input);
+	if (error)
+		goto err_free_input;
+
+	device_init_wakeup(&device->dev, true);
+	dev_info(&device->dev,
+			"%s [%s]\n", name, acpi_device_bid(device));
+	return 0;
+
+ err_free_input:
+	input_free_device(input);
+ err_free_button:
+	kfree(button);
+	return error;
+}
+
+static void surface_button_remove(struct acpi_device *device)
+{
+	struct surface_button *button = acpi_driver_data(device);
+
+	input_unregister_device(button->input);
+	kfree(button);
+}
+
+static SIMPLE_DEV_PM_OPS(surface_button_pm,
+		surface_button_suspend, surface_button_resume);
+
+static struct acpi_driver surface_button_driver = {
+	.name = "surface_pro3_button",
+	.class = "SurfacePro3",
+	.ids = surface_button_device_ids,
+	.ops = {
+		.add = surface_button_add,
+		.remove = surface_button_remove,
+		.notify = surface_button_notify,
+	},
+	.drv.pm = &surface_button_pm,
+};
+
+module_acpi_driver(surface_button_driver);