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, 257 insertions, 0 deletions

diff --git a/drivers/platform/chrome/chromeos_acpi.c b/drivers/platform/chrome/chromeos_acpi.c
new file mode 100644
index 000000000..50d8a4d43
--- /dev/null
+++ b/drivers/platform/chrome/chromeos_acpi.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ChromeOS specific ACPI extensions
+ *
+ * Copyright 2022 Google LLC
+ *
+ * This driver attaches to the ChromeOS ACPI device and then exports the
+ * values reported by the ACPI in a sysfs directory. All values are
+ * presented in the string form (numbers as decimal values) and can be
+ * accessed as the contents of the appropriate read only files in the
+ * sysfs directory tree.
+ */
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+
+#define ACPI_ATTR_NAME_LEN 4
+
+#define DEV_ATTR(_var, _name)					\
+	static struct device_attribute dev_attr_##_var =	\
+		__ATTR(_name, 0444, chromeos_first_level_attr_show, NULL);
+
+#define GPIO_ATTR_GROUP(_group, _name, _num)						\
+	static umode_t attr_is_visible_gpio_##_num(struct kobject *kobj,		\
+						   struct attribute *attr, int n)	\
+	{										\
+		if (_num < chromeos_acpi_gpio_groups)					\
+			return attr->mode;						\
+		return 0;								\
+	}										\
+	static ssize_t chromeos_attr_show_gpio_##_num(struct device *dev,		\
+						      struct device_attribute *attr,	\
+						      char *buf)			\
+	{										\
+		char name[ACPI_ATTR_NAME_LEN + 1];					\
+		int ret, num;								\
+											\
+		ret = parse_attr_name(attr->attr.name, name, &num);			\
+		if (ret)								\
+			return ret;							\
+		return chromeos_acpi_evaluate_method(dev, _num, num, name, buf);	\
+	}										\
+	static struct device_attribute dev_attr_0_##_group =				\
+		__ATTR(GPIO.0, 0444, chromeos_attr_show_gpio_##_num, NULL);		\
+	static struct device_attribute dev_attr_1_##_group =				\
+		__ATTR(GPIO.1, 0444, chromeos_attr_show_gpio_##_num, NULL);		\
+	static struct device_attribute dev_attr_2_##_group =				\
+		__ATTR(GPIO.2, 0444, chromeos_attr_show_gpio_##_num, NULL);		\
+	static struct device_attribute dev_attr_3_##_group =				\
+		__ATTR(GPIO.3, 0444, chromeos_attr_show_gpio_##_num, NULL);		\
+											\
+	static struct attribute *attrs_##_group[] = {					\
+		&dev_attr_0_##_group.attr,						\
+		&dev_attr_1_##_group.attr,						\
+		&dev_attr_2_##_group.attr,						\
+		&dev_attr_3_##_group.attr,						\
+		NULL									\
+	};										\
+	static const struct attribute_group attr_group_##_group = {			\
+		.name = _name,								\
+		.is_visible = attr_is_visible_gpio_##_num,				\
+		.attrs = attrs_##_group,						\
+	};
+
+static unsigned int chromeos_acpi_gpio_groups;
+
+/* Parse the ACPI package and return the data related to that attribute */
+static int chromeos_acpi_handle_package(struct device *dev, union acpi_object *obj,
+					int pkg_num, int sub_pkg_num, char *name, char *buf)
+{
+	union acpi_object *element = obj->package.elements;
+
+	if (pkg_num >= obj->package.count)
+		return -EINVAL;
+	element += pkg_num;
+
+	if (element->type == ACPI_TYPE_PACKAGE) {
+		if (sub_pkg_num >= element->package.count)
+			return -EINVAL;
+		/* select sub element inside this package */
+		element = element->package.elements;
+		element += sub_pkg_num;
+	}
+
+	switch (element->type) {
+	case ACPI_TYPE_INTEGER:
+		return sysfs_emit(buf, "%d\n", (int)element->integer.value);
+	case ACPI_TYPE_STRING:
+		return sysfs_emit(buf, "%s\n", element->string.pointer);
+	case ACPI_TYPE_BUFFER:
+		return sysfs_emit(buf, "%s\n", element->buffer.pointer);
+	default:
+		dev_err(dev, "element type %d not supported\n", element->type);
+		return -EINVAL;
+	}
+}
+
+static int chromeos_acpi_evaluate_method(struct device *dev, int pkg_num, int sub_pkg_num,
+					 char *name, char *buf)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	acpi_status status;
+	int ret = -EINVAL;
+
+	status = acpi_evaluate_object(ACPI_HANDLE(dev), name, NULL, &output);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "failed to retrieve %s. %s\n", name, acpi_format_exception(status));
+		return ret;
+	}
+
+	if (((union acpi_object *)output.pointer)->type == ACPI_TYPE_PACKAGE)
+		ret = chromeos_acpi_handle_package(dev, output.pointer, pkg_num, sub_pkg_num,
+						   name, buf);
+
+	kfree(output.pointer);
+	return ret;
+}
+
+static int parse_attr_name(const char *name, char *attr_name, int *attr_num)
+{
+	int ret;
+
+	ret = strscpy(attr_name, name, ACPI_ATTR_NAME_LEN + 1);
+	if (ret == -E2BIG)
+		return kstrtoint(&name[ACPI_ATTR_NAME_LEN + 1], 0, attr_num);
+	return 0;
+}
+
+static ssize_t chromeos_first_level_attr_show(struct device *dev, struct device_attribute *attr,
+					      char *buf)
+{
+	char attr_name[ACPI_ATTR_NAME_LEN + 1];
+	int ret, attr_num = 0;
+
+	ret = parse_attr_name(attr->attr.name, attr_name, &attr_num);
+	if (ret)
+		return ret;
+	return chromeos_acpi_evaluate_method(dev, attr_num, 0, attr_name, buf);
+}
+
+static unsigned int get_gpio_pkg_num(struct device *dev)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *obj;
+	acpi_status status;
+	unsigned int count = 0;
+	char *name = "GPIO";
+
+	status = acpi_evaluate_object(ACPI_HANDLE(dev), name, NULL, &output);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "failed to retrieve %s. %s\n", name, acpi_format_exception(status));
+		return count;
+	}
+
+	obj = output.pointer;
+
+	if (obj->type == ACPI_TYPE_PACKAGE)
+		count = obj->package.count;
+
+	kfree(output.pointer);
+	return count;
+}
+
+DEV_ATTR(binf2, BINF.2)
+DEV_ATTR(binf3, BINF.3)
+DEV_ATTR(chsw, CHSW)
+DEV_ATTR(fmap, FMAP)
+DEV_ATTR(frid, FRID)
+DEV_ATTR(fwid, FWID)
+DEV_ATTR(hwid, HWID)
+DEV_ATTR(meck, MECK)
+DEV_ATTR(vbnv0, VBNV.0)
+DEV_ATTR(vbnv1, VBNV.1)
+DEV_ATTR(vdat, VDAT)
+
+static struct attribute *first_level_attrs[] = {
+	&dev_attr_binf2.attr,
+	&dev_attr_binf3.attr,
+	&dev_attr_chsw.attr,
+	&dev_attr_fmap.attr,
+	&dev_attr_frid.attr,
+	&dev_attr_fwid.attr,
+	&dev_attr_hwid.attr,
+	&dev_attr_meck.attr,
+	&dev_attr_vbnv0.attr,
+	&dev_attr_vbnv1.attr,
+	&dev_attr_vdat.attr,
+	NULL
+};
+
+static const struct attribute_group first_level_attr_group = {
+	.attrs = first_level_attrs,
+};
+
+/*
+ * Every platform can have a different number of GPIO attribute groups.
+ * Define upper limit groups. At run time, the platform decides to show
+ * the present number of groups only, others are hidden.
+ */
+GPIO_ATTR_GROUP(gpio0, "GPIO.0", 0)
+GPIO_ATTR_GROUP(gpio1, "GPIO.1", 1)
+GPIO_ATTR_GROUP(gpio2, "GPIO.2", 2)
+GPIO_ATTR_GROUP(gpio3, "GPIO.3", 3)
+GPIO_ATTR_GROUP(gpio4, "GPIO.4", 4)
+GPIO_ATTR_GROUP(gpio5, "GPIO.5", 5)
+GPIO_ATTR_GROUP(gpio6, "GPIO.6", 6)
+GPIO_ATTR_GROUP(gpio7, "GPIO.7", 7)
+
+static const struct attribute_group *chromeos_acpi_all_groups[] = {
+	&first_level_attr_group,
+	&attr_group_gpio0,
+	&attr_group_gpio1,
+	&attr_group_gpio2,
+	&attr_group_gpio3,
+	&attr_group_gpio4,
+	&attr_group_gpio5,
+	&attr_group_gpio6,
+	&attr_group_gpio7,
+	NULL
+};
+
+static int chromeos_acpi_device_probe(struct platform_device *pdev)
+{
+	chromeos_acpi_gpio_groups = get_gpio_pkg_num(&pdev->dev);
+
+	/*
+	 * If the platform has more GPIO attribute groups than the number of
+	 * groups this driver supports, give out a warning message.
+	 */
+	if (chromeos_acpi_gpio_groups > ARRAY_SIZE(chromeos_acpi_all_groups) - 2)
+		dev_warn(&pdev->dev, "Only %zu GPIO attr groups supported by the driver out of total %u.\n",
+			 ARRAY_SIZE(chromeos_acpi_all_groups) - 2, chromeos_acpi_gpio_groups);
+	return 0;
+}
+
+/* GGL is valid PNP ID of Google. PNP ID can be used with the ACPI devices. */
+static const struct acpi_device_id chromeos_device_ids[] = {
+	{ "GGL0001", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, chromeos_device_ids);
+
+static struct platform_driver chromeos_acpi_device_driver = {
+	.probe = chromeos_acpi_device_probe,
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.dev_groups = chromeos_acpi_all_groups,
+		.acpi_match_table = chromeos_device_ids,
+	}
+};
+module_platform_driver(chromeos_acpi_device_driver);
+
+MODULE_AUTHOR("Muhammad Usama Anjum <usama.anjum@collabora.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ChromeOS specific ACPI extensions");