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/hwmon/max1111.c b/drivers/hwmon/max1111.c
new file mode 100644
index 000000000..4c5487aeb
--- /dev/null
+++ b/drivers/hwmon/max1111.c
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * max1111.c - +2.7V, Low-Power, Multichannel, Serial 8-bit ADCs
+ *
+ * Based on arch/arm/mach-pxa/corgi_ssp.c
+ *
+ * Copyright (C) 2004-2005 Richard Purdie
+ *
+ * Copyright (C) 2008 Marvell International Ltd.
+ *	Eric Miao <eric.miao@marvell.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+
+enum chips { max1110, max1111, max1112, max1113 };
+
+#define MAX1111_TX_BUF_SIZE	1
+#define MAX1111_RX_BUF_SIZE	2
+
+/* MAX1111 Commands */
+#define MAX1111_CTRL_PD0      (1u << 0)
+#define MAX1111_CTRL_PD1      (1u << 1)
+#define MAX1111_CTRL_SGL      (1u << 2)
+#define MAX1111_CTRL_UNI      (1u << 3)
+#define MAX1110_CTRL_SEL_SH   (4)
+#define MAX1111_CTRL_SEL_SH   (5)	/* NOTE: bit 4 is ignored */
+#define MAX1111_CTRL_STR      (1u << 7)
+
+struct max1111_data {
+	struct spi_device	*spi;
+	struct device		*hwmon_dev;
+	struct spi_message	msg;
+	struct spi_transfer	xfer[2];
+	uint8_t tx_buf[MAX1111_TX_BUF_SIZE];
+	uint8_t rx_buf[MAX1111_RX_BUF_SIZE];
+	struct mutex		drvdata_lock;
+	/* protect msg, xfer and buffers from multiple access */
+	int			sel_sh;
+	int			lsb;
+};
+
+static int max1111_read(struct device *dev, int channel)
+{
+	struct max1111_data *data = dev_get_drvdata(dev);
+	uint8_t v1, v2;
+	int err;
+
+	/* writing to drvdata struct is not thread safe, wait on mutex */
+	mutex_lock(&data->drvdata_lock);
+
+	data->tx_buf[0] = (channel << data->sel_sh) |
+		MAX1111_CTRL_PD0 | MAX1111_CTRL_PD1 |
+		MAX1111_CTRL_SGL | MAX1111_CTRL_UNI | MAX1111_CTRL_STR;
+
+	err = spi_sync(data->spi, &data->msg);
+	if (err < 0) {
+		dev_err(dev, "spi_sync failed with %d\n", err);
+		mutex_unlock(&data->drvdata_lock);
+		return err;
+	}
+
+	v1 = data->rx_buf[0];
+	v2 = data->rx_buf[1];
+
+	mutex_unlock(&data->drvdata_lock);
+
+	if ((v1 & 0xc0) || (v2 & 0x3f))
+		return -EINVAL;
+
+	return (v1 << 2) | (v2 >> 6);
+}
+
+#ifdef CONFIG_SHARPSL_PM
+static struct max1111_data *the_max1111;
+
+int max1111_read_channel(int channel)
+{
+	if (!the_max1111 || !the_max1111->spi)
+		return -ENODEV;
+
+	return max1111_read(&the_max1111->spi->dev, channel);
+}
+EXPORT_SYMBOL(max1111_read_channel);
+#endif
+
+/*
+ * NOTE: SPI devices do not have a default 'name' attribute, which is
+ * likely to be used by hwmon applications to distinguish between
+ * different devices, explicitly add a name attribute here.
+ */
+static ssize_t name_show(struct device *dev,
+			 struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%s\n", to_spi_device(dev)->modalias);
+}
+
+static ssize_t show_adc(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct max1111_data *data = dev_get_drvdata(dev);
+	int channel = to_sensor_dev_attr(attr)->index;
+	int ret;
+
+	ret = max1111_read(dev, channel);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Assume the reference voltage to be 2.048V or 4.096V, with an 8-bit
+	 * sample. The LSB weight is 8mV or 16mV depending on the chip type.
+	 */
+	return sprintf(buf, "%d\n", ret * data->lsb);
+}
+
+#define MAX1111_ADC_ATTR(_id)		\
+	SENSOR_DEVICE_ATTR(in##_id##_input, S_IRUGO, show_adc, NULL, _id)
+
+static DEVICE_ATTR_RO(name);
+static MAX1111_ADC_ATTR(0);
+static MAX1111_ADC_ATTR(1);
+static MAX1111_ADC_ATTR(2);
+static MAX1111_ADC_ATTR(3);
+static MAX1111_ADC_ATTR(4);
+static MAX1111_ADC_ATTR(5);
+static MAX1111_ADC_ATTR(6);
+static MAX1111_ADC_ATTR(7);
+
+static struct attribute *max1111_attributes[] = {
+	&dev_attr_name.attr,
+	&sensor_dev_attr_in0_input.dev_attr.attr,
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+	&sensor_dev_attr_in3_input.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group max1111_attr_group = {
+	.attrs	= max1111_attributes,
+};
+
+static struct attribute *max1110_attributes[] = {
+	&sensor_dev_attr_in4_input.dev_attr.attr,
+	&sensor_dev_attr_in5_input.dev_attr.attr,
+	&sensor_dev_attr_in6_input.dev_attr.attr,
+	&sensor_dev_attr_in7_input.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group max1110_attr_group = {
+	.attrs	= max1110_attributes,
+};
+
+static int setup_transfer(struct max1111_data *data)
+{
+	struct spi_message *m;
+	struct spi_transfer *x;
+
+	m = &data->msg;
+	x = &data->xfer[0];
+
+	spi_message_init(m);
+
+	x->tx_buf = &data->tx_buf[0];
+	x->len = MAX1111_TX_BUF_SIZE;
+	spi_message_add_tail(x, m);
+
+	x++;
+	x->rx_buf = &data->rx_buf[0];
+	x->len = MAX1111_RX_BUF_SIZE;
+	spi_message_add_tail(x, m);
+
+	return 0;
+}
+
+static int max1111_probe(struct spi_device *spi)
+{
+	enum chips chip = spi_get_device_id(spi)->driver_data;
+	struct max1111_data *data;
+	int err;
+
+	spi->bits_per_word = 8;
+	spi->mode = SPI_MODE_0;
+	err = spi_setup(spi);
+	if (err < 0)
+		return err;
+
+	data = devm_kzalloc(&spi->dev, sizeof(struct max1111_data), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	switch (chip) {
+	case max1110:
+		data->lsb = 8;
+		data->sel_sh = MAX1110_CTRL_SEL_SH;
+		break;
+	case max1111:
+		data->lsb = 8;
+		data->sel_sh = MAX1111_CTRL_SEL_SH;
+		break;
+	case max1112:
+		data->lsb = 16;
+		data->sel_sh = MAX1110_CTRL_SEL_SH;
+		break;
+	case max1113:
+		data->lsb = 16;
+		data->sel_sh = MAX1111_CTRL_SEL_SH;
+		break;
+	}
+	err = setup_transfer(data);
+	if (err)
+		return err;
+
+	mutex_init(&data->drvdata_lock);
+
+	data->spi = spi;
+	spi_set_drvdata(spi, data);
+
+	err = sysfs_create_group(&spi->dev.kobj, &max1111_attr_group);
+	if (err) {
+		dev_err(&spi->dev, "failed to create attribute group\n");
+		return err;
+	}
+	if (chip == max1110 || chip == max1112) {
+		err = sysfs_create_group(&spi->dev.kobj, &max1110_attr_group);
+		if (err) {
+			dev_err(&spi->dev,
+				"failed to create extended attribute group\n");
+			goto err_remove;
+		}
+	}
+
+	data->hwmon_dev = hwmon_device_register(&spi->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		dev_err(&spi->dev, "failed to create hwmon device\n");
+		err = PTR_ERR(data->hwmon_dev);
+		goto err_remove;
+	}
+
+#ifdef CONFIG_SHARPSL_PM
+	the_max1111 = data;
+#endif
+	return 0;
+
+err_remove:
+	sysfs_remove_group(&spi->dev.kobj, &max1110_attr_group);
+	sysfs_remove_group(&spi->dev.kobj, &max1111_attr_group);
+	return err;
+}
+
+static void max1111_remove(struct spi_device *spi)
+{
+	struct max1111_data *data = spi_get_drvdata(spi);
+
+#ifdef CONFIG_SHARPSL_PM
+	the_max1111 = NULL;
+#endif
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&spi->dev.kobj, &max1110_attr_group);
+	sysfs_remove_group(&spi->dev.kobj, &max1111_attr_group);
+	mutex_destroy(&data->drvdata_lock);
+}
+
+static const struct spi_device_id max1111_ids[] = {
+	{ "max1110", max1110 },
+	{ "max1111", max1111 },
+	{ "max1112", max1112 },
+	{ "max1113", max1113 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, max1111_ids);
+
+static struct spi_driver max1111_driver = {
+	.driver		= {
+		.name	= "max1111",
+	},
+	.id_table	= max1111_ids,
+	.probe		= max1111_probe,
+	.remove		= max1111_remove,
+};
+
+module_spi_driver(max1111_driver);
+
+MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>");
+MODULE_DESCRIPTION("MAX1110/MAX1111/MAX1112/MAX1113 ADC Driver");
+MODULE_LICENSE("GPL");