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, 292 insertions, 0 deletions

diff --git a/drivers/iio/pressure/hp03.c b/drivers/iio/pressure/hp03.c
new file mode 100644
index 000000000..bd1f71a99
--- /dev/null
+++ b/drivers/iio/pressure/hp03.c
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016 Marek Vasut <marex@denx.de>
+ *
+ * Driver for Hope RF HP03 digital temperature and pressure sensor.
+ */
+
+#define pr_fmt(fmt) "hp03: " fmt
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/*
+ * The HP03 sensor occupies two fixed I2C addresses:
+ *  0x50 ... read-only EEPROM with calibration data
+ *  0x77 ... read-write ADC for pressure and temperature
+ */
+#define HP03_EEPROM_ADDR		0x50
+#define HP03_ADC_ADDR			0x77
+
+#define HP03_EEPROM_CX_OFFSET		0x10
+#define HP03_EEPROM_AB_OFFSET		0x1e
+#define HP03_EEPROM_CD_OFFSET		0x20
+
+#define HP03_ADC_WRITE_REG		0xff
+#define HP03_ADC_READ_REG		0xfd
+#define HP03_ADC_READ_PRESSURE		0xf0	/* D1 in datasheet */
+#define HP03_ADC_READ_TEMP		0xe8	/* D2 in datasheet */
+
+struct hp03_priv {
+	struct i2c_client	*client;
+	struct mutex		lock;
+	struct gpio_desc	*xclr_gpio;
+
+	struct i2c_client	*eeprom_client;
+	struct regmap		*eeprom_regmap;
+
+	s32			pressure;	/* kPa */
+	s32			temp;		/* Deg. C */
+};
+
+static const struct iio_chan_spec hp03_channels[] = {
+	{
+		.type = IIO_PRESSURE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static bool hp03_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	return false;
+}
+
+static bool hp03_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	return false;
+}
+
+static const struct regmap_config hp03_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+
+	.max_register	= HP03_EEPROM_CD_OFFSET + 1,
+	.cache_type	= REGCACHE_RBTREE,
+
+	.writeable_reg	= hp03_is_writeable_reg,
+	.volatile_reg	= hp03_is_volatile_reg,
+};
+
+static int hp03_get_temp_pressure(struct hp03_priv *priv, const u8 reg)
+{
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(priv->client, HP03_ADC_WRITE_REG, reg);
+	if (ret < 0)
+		return ret;
+
+	msleep(50);	/* Wait for conversion to finish */
+
+	return i2c_smbus_read_word_data(priv->client, HP03_ADC_READ_REG);
+}
+
+static int hp03_update_temp_pressure(struct hp03_priv *priv)
+{
+	struct device *dev = &priv->client->dev;
+	u8 coefs[18];
+	u16 cx_val[7];
+	int ab_val, d1_val, d2_val, diff_val, dut, off, sens, x;
+	int i, ret;
+
+	/* Sample coefficients from EEPROM */
+	ret = regmap_bulk_read(priv->eeprom_regmap, HP03_EEPROM_CX_OFFSET,
+			       coefs, sizeof(coefs));
+	if (ret < 0) {
+		dev_err(dev, "Failed to read EEPROM (reg=%02x)\n",
+			HP03_EEPROM_CX_OFFSET);
+		return ret;
+	}
+
+	/* Sample Temperature and Pressure */
+	gpiod_set_value_cansleep(priv->xclr_gpio, 1);
+
+	ret = hp03_get_temp_pressure(priv, HP03_ADC_READ_PRESSURE);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read pressure\n");
+		goto err_adc;
+	}
+	d1_val = ret;
+
+	ret = hp03_get_temp_pressure(priv, HP03_ADC_READ_TEMP);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read temperature\n");
+		goto err_adc;
+	}
+	d2_val = ret;
+
+	gpiod_set_value_cansleep(priv->xclr_gpio, 0);
+
+	/* The Cx coefficients and Temp/Pressure values are MSB first. */
+	for (i = 0; i < 7; i++)
+		cx_val[i] = (coefs[2 * i] << 8) | (coefs[(2 * i) + 1] << 0);
+	d1_val = ((d1_val >> 8) & 0xff) | ((d1_val & 0xff) << 8);
+	d2_val = ((d2_val >> 8) & 0xff) | ((d2_val & 0xff) << 8);
+
+	/* Coefficient voodoo from the HP03 datasheet. */
+	if (d2_val >= cx_val[4])
+		ab_val = coefs[14];	/* A-value */
+	else
+		ab_val = coefs[15];	/* B-value */
+
+	diff_val = d2_val - cx_val[4];
+	dut = (ab_val * (diff_val >> 7) * (diff_val >> 7)) >> coefs[16];
+	dut = diff_val - dut;
+
+	off = (cx_val[1] + (((cx_val[3] - 1024) * dut) >> 14)) * 4;
+	sens = cx_val[0] + ((cx_val[2] * dut) >> 10);
+	x = ((sens * (d1_val - 7168)) >> 14) - off;
+
+	priv->pressure = ((x * 100) >> 5) + (cx_val[6] * 10);
+	priv->temp = 250 + ((dut * cx_val[5]) >> 16) - (dut >> coefs[17]);
+
+	return 0;
+
+err_adc:
+	gpiod_set_value_cansleep(priv->xclr_gpio, 0);
+	return ret;
+}
+
+static int hp03_read_raw(struct iio_dev *indio_dev,
+			 struct iio_chan_spec const *chan,
+			 int *val, int *val2, long mask)
+{
+	struct hp03_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&priv->lock);
+	ret = hp03_update_temp_pressure(priv);
+	mutex_unlock(&priv->lock);
+
+	if (ret)
+		return ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_PRESSURE:
+			*val = priv->pressure;
+			return IIO_VAL_INT;
+		case IIO_TEMP:
+			*val = priv->temp;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_PRESSURE:
+			*val = 0;
+			*val2 = 1000;
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_TEMP:
+			*val = 10;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return -EINVAL;
+}
+
+static const struct iio_info hp03_info = {
+	.read_raw	= &hp03_read_raw,
+};
+
+static int hp03_probe(struct i2c_client *client)
+{
+	const struct i2c_device_id *id = i2c_client_get_device_id(client);
+	struct device *dev = &client->dev;
+	struct iio_dev *indio_dev;
+	struct hp03_priv *priv;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	priv = iio_priv(indio_dev);
+	priv->client = client;
+	mutex_init(&priv->lock);
+
+	indio_dev->name = id->name;
+	indio_dev->channels = hp03_channels;
+	indio_dev->num_channels = ARRAY_SIZE(hp03_channels);
+	indio_dev->info = &hp03_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	priv->xclr_gpio = devm_gpiod_get_index(dev, "xclr", 0, GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->xclr_gpio)) {
+		dev_err(dev, "Failed to claim XCLR GPIO\n");
+		ret = PTR_ERR(priv->xclr_gpio);
+		return ret;
+	}
+
+	/*
+	 * Allocate another device for the on-sensor EEPROM,
+	 * which has it's dedicated I2C address and contains
+	 * the calibration constants for the sensor.
+	 */
+	priv->eeprom_client = devm_i2c_new_dummy_device(dev, client->adapter,
+							HP03_EEPROM_ADDR);
+	if (IS_ERR(priv->eeprom_client)) {
+		dev_err(dev, "New EEPROM I2C device failed\n");
+		return PTR_ERR(priv->eeprom_client);
+	}
+
+	priv->eeprom_regmap = devm_regmap_init_i2c(priv->eeprom_client,
+						   &hp03_regmap_config);
+	if (IS_ERR(priv->eeprom_regmap)) {
+		dev_err(dev, "Failed to allocate EEPROM regmap\n");
+		return PTR_ERR(priv->eeprom_regmap);
+	}
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret) {
+		dev_err(dev, "Failed to register IIO device\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct i2c_device_id hp03_id[] = {
+	{ "hp03", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, hp03_id);
+
+static const struct of_device_id hp03_of_match[] = {
+	{ .compatible = "hoperf,hp03" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, hp03_of_match);
+
+static struct i2c_driver hp03_driver = {
+	.driver = {
+		.name	= "hp03",
+		.of_match_table = hp03_of_match,
+	},
+	.probe_new	= hp03_probe,
+	.id_table	= hp03_id,
+};
+module_i2c_driver(hp03_driver);
+
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_DESCRIPTION("Driver for Hope RF HP03 pressure and temperature sensor");
+MODULE_LICENSE("GPL v2");