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, 433 insertions, 0 deletions

diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c
new file mode 100644
index 000000000..0b52fc909
--- /dev/null
+++ b/drivers/leds/leds-aw2013.c
@@ -0,0 +1,433 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Driver for Awinic AW2013 3-channel LED driver
+
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#define AW2013_MAX_LEDS 3
+
+/* Reset and ID register */
+#define AW2013_RSTR 0x00
+#define AW2013_RSTR_RESET 0x55
+#define AW2013_RSTR_CHIP_ID 0x33
+
+/* Global control register */
+#define AW2013_GCR 0x01
+#define AW2013_GCR_ENABLE BIT(0)
+
+/* LED channel enable register */
+#define AW2013_LCTR 0x30
+#define AW2013_LCTR_LE(x) BIT((x))
+
+/* LED channel control registers */
+#define AW2013_LCFG(x) (0x31 + (x))
+#define AW2013_LCFG_IMAX_MASK (BIT(0) | BIT(1)) // Should be 0-3
+#define AW2013_LCFG_MD BIT(4)
+#define AW2013_LCFG_FI BIT(5)
+#define AW2013_LCFG_FO BIT(6)
+
+/* LED channel PWM registers */
+#define AW2013_REG_PWM(x) (0x34 + (x))
+
+/* LED channel timing registers */
+#define AW2013_LEDT0(x) (0x37 + (x) * 3)
+#define AW2013_LEDT0_T1(x) ((x) << 4) // Should be 0-7
+#define AW2013_LEDT0_T2(x) (x) // Should be 0-5
+
+#define AW2013_LEDT1(x) (0x38 + (x) * 3)
+#define AW2013_LEDT1_T3(x) ((x) << 4) // Should be 0-7
+#define AW2013_LEDT1_T4(x) (x) // Should be 0-7
+
+#define AW2013_LEDT2(x) (0x39 + (x) * 3)
+#define AW2013_LEDT2_T0(x) ((x) << 4) // Should be 0-8
+#define AW2013_LEDT2_REPEAT(x) (x) // Should be 0-15
+
+#define AW2013_REG_MAX 0x77
+
+#define AW2013_TIME_STEP 130 /* ms */
+
+struct aw2013;
+
+struct aw2013_led {
+	struct aw2013 *chip;
+	struct led_classdev cdev;
+	u32 num;
+	unsigned int imax;
+};
+
+struct aw2013 {
+	struct mutex mutex; /* held when writing to registers */
+	struct regulator *vcc_regulator;
+	struct i2c_client *client;
+	struct aw2013_led leds[AW2013_MAX_LEDS];
+	struct regmap *regmap;
+	int num_leds;
+	bool enabled;
+};
+
+static int aw2013_chip_init(struct aw2013 *chip)
+{
+	int i, ret;
+
+	ret = regmap_write(chip->regmap, AW2013_GCR, AW2013_GCR_ENABLE);
+	if (ret) {
+		dev_err(&chip->client->dev, "Failed to enable the chip: %d\n",
+			ret);
+		return ret;
+	}
+
+	for (i = 0; i < chip->num_leds; i++) {
+		ret = regmap_update_bits(chip->regmap,
+					 AW2013_LCFG(chip->leds[i].num),
+					 AW2013_LCFG_IMAX_MASK,
+					 chip->leds[i].imax);
+		if (ret) {
+			dev_err(&chip->client->dev,
+				"Failed to set maximum current for led %d: %d\n",
+				chip->leds[i].num, ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static void aw2013_chip_disable(struct aw2013 *chip)
+{
+	int ret;
+
+	if (!chip->enabled)
+		return;
+
+	regmap_write(chip->regmap, AW2013_GCR, 0);
+
+	ret = regulator_disable(chip->vcc_regulator);
+	if (ret) {
+		dev_err(&chip->client->dev,
+			"Failed to disable regulator: %d\n", ret);
+		return;
+	}
+
+	chip->enabled = false;
+}
+
+static int aw2013_chip_enable(struct aw2013 *chip)
+{
+	int ret;
+
+	if (chip->enabled)
+		return 0;
+
+	ret = regulator_enable(chip->vcc_regulator);
+	if (ret) {
+		dev_err(&chip->client->dev,
+			"Failed to enable regulator: %d\n", ret);
+		return ret;
+	}
+	chip->enabled = true;
+
+	ret = aw2013_chip_init(chip);
+	if (ret)
+		aw2013_chip_disable(chip);
+
+	return ret;
+}
+
+static bool aw2013_chip_in_use(struct aw2013 *chip)
+{
+	int i;
+
+	for (i = 0; i < chip->num_leds; i++)
+		if (chip->leds[i].cdev.brightness)
+			return true;
+
+	return false;
+}
+
+static int aw2013_brightness_set(struct led_classdev *cdev,
+				 enum led_brightness brightness)
+{
+	struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev);
+	int ret, num;
+
+	mutex_lock(&led->chip->mutex);
+
+	if (aw2013_chip_in_use(led->chip)) {
+		ret = aw2013_chip_enable(led->chip);
+		if (ret)
+			goto error;
+	}
+
+	num = led->num;
+
+	ret = regmap_write(led->chip->regmap, AW2013_REG_PWM(num), brightness);
+	if (ret)
+		goto error;
+
+	if (brightness) {
+		ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+					 AW2013_LCTR_LE(num), 0xFF);
+	} else {
+		ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+					 AW2013_LCTR_LE(num), 0);
+		if (ret)
+			goto error;
+		ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+					 AW2013_LCFG_MD, 0);
+	}
+	if (ret)
+		goto error;
+
+	if (!aw2013_chip_in_use(led->chip))
+		aw2013_chip_disable(led->chip);
+
+error:
+	mutex_unlock(&led->chip->mutex);
+
+	return ret;
+}
+
+static int aw2013_blink_set(struct led_classdev *cdev,
+			    unsigned long *delay_on, unsigned long *delay_off)
+{
+	struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev);
+	int ret, num = led->num;
+	unsigned long off = 0, on = 0;
+
+	/* If no blink specified, default to 1 Hz. */
+	if (!*delay_off && !*delay_on) {
+		*delay_off = 500;
+		*delay_on = 500;
+	}
+
+	if (!led->cdev.brightness) {
+		led->cdev.brightness = LED_FULL;
+		ret = aw2013_brightness_set(&led->cdev, led->cdev.brightness);
+		if (ret)
+			return ret;
+	}
+
+	/* Never on - just set to off */
+	if (!*delay_on) {
+		led->cdev.brightness = LED_OFF;
+		return aw2013_brightness_set(&led->cdev, LED_OFF);
+	}
+
+	mutex_lock(&led->chip->mutex);
+
+	/* Never off - brightness is already set, disable blinking */
+	if (!*delay_off) {
+		ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+					 AW2013_LCFG_MD, 0);
+		goto out;
+	}
+
+	/* Convert into values the HW will understand. */
+	off = min(5, ilog2((*delay_off - 1) / AW2013_TIME_STEP) + 1);
+	on = min(7, ilog2((*delay_on - 1) / AW2013_TIME_STEP) + 1);
+
+	*delay_off = BIT(off) * AW2013_TIME_STEP;
+	*delay_on = BIT(on) * AW2013_TIME_STEP;
+
+	/* Set timings */
+	ret = regmap_write(led->chip->regmap,
+			   AW2013_LEDT0(num), AW2013_LEDT0_T2(on));
+	if (ret)
+		goto out;
+	ret = regmap_write(led->chip->regmap,
+			   AW2013_LEDT1(num), AW2013_LEDT1_T4(off));
+	if (ret)
+		goto out;
+
+	/* Finally, enable the LED */
+	ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num),
+				 AW2013_LCFG_MD, 0xFF);
+	if (ret)
+		goto out;
+
+	ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR,
+				 AW2013_LCTR_LE(num), 0xFF);
+
+out:
+	mutex_unlock(&led->chip->mutex);
+
+	return ret;
+}
+
+static int aw2013_probe_dt(struct aw2013 *chip)
+{
+	struct device_node *np = dev_of_node(&chip->client->dev), *child;
+	int count, ret = 0, i = 0;
+	struct aw2013_led *led;
+
+	count = of_get_available_child_count(np);
+	if (!count || count > AW2013_MAX_LEDS)
+		return -EINVAL;
+
+	regmap_write(chip->regmap, AW2013_RSTR, AW2013_RSTR_RESET);
+
+	for_each_available_child_of_node(np, child) {
+		struct led_init_data init_data = {};
+		u32 source;
+		u32 imax;
+
+		ret = of_property_read_u32(child, "reg", &source);
+		if (ret != 0 || source >= AW2013_MAX_LEDS) {
+			dev_err(&chip->client->dev,
+				"Couldn't read LED address: %d\n", ret);
+			count--;
+			continue;
+		}
+
+		led = &chip->leds[i];
+		led->num = source;
+		led->chip = chip;
+		init_data.fwnode = of_fwnode_handle(child);
+
+		if (!of_property_read_u32(child, "led-max-microamp", &imax)) {
+			led->imax = min_t(u32, imax / 5000, 3);
+		} else {
+			led->imax = 1; // 5mA
+			dev_info(&chip->client->dev,
+				 "DT property led-max-microamp is missing\n");
+		}
+
+		led->cdev.brightness_set_blocking = aw2013_brightness_set;
+		led->cdev.blink_set = aw2013_blink_set;
+
+		ret = devm_led_classdev_register_ext(&chip->client->dev,
+						     &led->cdev, &init_data);
+		if (ret < 0) {
+			of_node_put(child);
+			return ret;
+		}
+
+		i++;
+	}
+
+	if (!count)
+		return -EINVAL;
+
+	chip->num_leds = i;
+
+	return 0;
+}
+
+static const struct regmap_config aw2013_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = AW2013_REG_MAX,
+};
+
+static int aw2013_probe(struct i2c_client *client)
+{
+	struct aw2013 *chip;
+	int ret;
+	unsigned int chipid;
+
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	mutex_init(&chip->mutex);
+	mutex_lock(&chip->mutex);
+
+	chip->client = client;
+	i2c_set_clientdata(client, chip);
+
+	chip->regmap = devm_regmap_init_i2c(client, &aw2013_regmap_config);
+	if (IS_ERR(chip->regmap)) {
+		ret = PTR_ERR(chip->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			ret);
+		goto error;
+	}
+
+	chip->vcc_regulator = devm_regulator_get(&client->dev, "vcc");
+	ret = PTR_ERR_OR_ZERO(chip->vcc_regulator);
+	if (ret) {
+		if (ret != -EPROBE_DEFER)
+			dev_err(&client->dev,
+				"Failed to request regulator: %d\n", ret);
+		goto error;
+	}
+
+	ret = regulator_enable(chip->vcc_regulator);
+	if (ret) {
+		dev_err(&client->dev,
+			"Failed to enable regulator: %d\n", ret);
+		goto error;
+	}
+
+	ret = regmap_read(chip->regmap, AW2013_RSTR, &chipid);
+	if (ret) {
+		dev_err(&client->dev, "Failed to read chip ID: %d\n",
+			ret);
+		goto error_reg;
+	}
+
+	if (chipid != AW2013_RSTR_CHIP_ID) {
+		dev_err(&client->dev, "Chip reported wrong ID: %x\n",
+			chipid);
+		ret = -ENODEV;
+		goto error_reg;
+	}
+
+	ret = aw2013_probe_dt(chip);
+	if (ret < 0)
+		goto error_reg;
+
+	ret = regulator_disable(chip->vcc_regulator);
+	if (ret) {
+		dev_err(&client->dev,
+			"Failed to disable regulator: %d\n", ret);
+		goto error;
+	}
+
+	mutex_unlock(&chip->mutex);
+
+	return 0;
+
+error_reg:
+	regulator_disable(chip->vcc_regulator);
+
+error:
+	mutex_destroy(&chip->mutex);
+	return ret;
+}
+
+static void aw2013_remove(struct i2c_client *client)
+{
+	struct aw2013 *chip = i2c_get_clientdata(client);
+
+	aw2013_chip_disable(chip);
+
+	mutex_destroy(&chip->mutex);
+}
+
+static const struct of_device_id aw2013_match_table[] = {
+	{ .compatible = "awinic,aw2013", },
+	{ /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, aw2013_match_table);
+
+static struct i2c_driver aw2013_driver = {
+	.driver = {
+		.name = "leds-aw2013",
+		.of_match_table = of_match_ptr(aw2013_match_table),
+	},
+	.probe_new = aw2013_probe,
+	.remove = aw2013_remove,
+};
+
+module_i2c_driver(aw2013_driver);
+
+MODULE_AUTHOR("Nikita Travkin <nikitos.tr@gmail.com>");
+MODULE_DESCRIPTION("AW2013 LED driver");
+MODULE_LICENSE("GPL v2");