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, 287 insertions, 0 deletions

diff --git a/drivers/power/supply/max8997_charger.c b/drivers/power/supply/max8997_charger.c
new file mode 100644
index 000000000..1ec3535a2
--- /dev/null
+++ b/drivers/power/supply/max8997_charger.c
@@ -0,0 +1,287 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// max8997_charger.c - Power supply consumer driver for the Maxim 8997/8966
+//
+//  Copyright (C) 2011 Samsung Electronics
+//  MyungJoo Ham <myungjoo.ham@samsung.com>
+
+#include <linux/err.h>
+#include <linux/extcon.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/max8997.h>
+#include <linux/mfd/max8997-private.h>
+#include <linux/regulator/consumer.h>
+#include <linux/devm-helpers.h>
+
+/* MAX8997_REG_STATUS4 */
+#define DCINOK_SHIFT		1
+#define DCINOK_MASK		(1 << DCINOK_SHIFT)
+#define DETBAT_SHIFT		2
+#define DETBAT_MASK		(1 << DETBAT_SHIFT)
+
+/* MAX8997_REG_MBCCTRL1 */
+#define TFCH_SHIFT		4
+#define TFCH_MASK		(7 << TFCH_SHIFT)
+
+/* MAX8997_REG_MBCCTRL5 */
+#define ITOPOFF_SHIFT		0
+#define ITOPOFF_MASK		(0xF << ITOPOFF_SHIFT)
+
+struct charger_data {
+	struct device *dev;
+	struct max8997_dev *iodev;
+	struct power_supply *battery;
+	struct regulator *reg;
+	struct extcon_dev *edev;
+	struct notifier_block extcon_nb;
+	struct work_struct extcon_work;
+};
+
+static enum power_supply_property max8997_battery_props[] = {
+	POWER_SUPPLY_PROP_STATUS, /* "FULL", "CHARGING" or "DISCHARGING". */
+	POWER_SUPPLY_PROP_PRESENT, /* the presence of battery */
+	POWER_SUPPLY_PROP_ONLINE, /* charger is active or not */
+};
+
+/* Note that the charger control is done by a current regulator "CHARGER" */
+static int max8997_battery_get_property(struct power_supply *psy,
+		enum power_supply_property psp,
+		union power_supply_propval *val)
+{
+	struct charger_data *charger = power_supply_get_drvdata(psy);
+	struct i2c_client *i2c = charger->iodev->i2c;
+	int ret;
+	u8 reg;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = 0;
+		ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+		if (ret)
+			return ret;
+		if ((reg & (1 << 0)) == 0x1)
+			val->intval = POWER_SUPPLY_STATUS_FULL;
+		else if ((reg & DCINOK_MASK))
+			val->intval = POWER_SUPPLY_STATUS_CHARGING;
+		else
+			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+
+		break;
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = 0;
+		ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+		if (ret)
+			return ret;
+		if ((reg & DETBAT_MASK) == 0x0)
+			val->intval = 1;
+
+		break;
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = 0;
+		ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+		if (ret)
+			return ret;
+		if (reg & DCINOK_MASK)
+			val->intval = 1;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void max8997_battery_extcon_evt_worker(struct work_struct *work)
+{
+	struct charger_data *charger =
+	    container_of(work, struct charger_data, extcon_work);
+	struct extcon_dev *edev = charger->edev;
+	int current_limit;
+
+	if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
+		dev_dbg(charger->dev, "USB SDP charger is connected\n");
+		current_limit = 450000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
+		dev_dbg(charger->dev, "USB DCP charger is connected\n");
+		current_limit = 650000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) {
+		dev_dbg(charger->dev, "USB FAST charger is connected\n");
+		current_limit = 650000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) {
+		dev_dbg(charger->dev, "USB SLOW charger is connected\n");
+		current_limit = 650000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
+		dev_dbg(charger->dev, "USB CDP charger is connected\n");
+		current_limit = 650000;
+	} else {
+		dev_dbg(charger->dev, "USB charger is disconnected\n");
+		current_limit = -1;
+	}
+
+	if (current_limit > 0) {
+		int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit);
+
+		if (ret) {
+			dev_err(charger->dev, "failed to set current limit: %d\n", ret);
+			return;
+		}
+		ret = regulator_enable(charger->reg);
+		if (ret)
+			dev_err(charger->dev, "failed to enable regulator: %d\n", ret);
+	} else {
+		int ret  = regulator_disable(charger->reg);
+
+		if (ret)
+			dev_err(charger->dev, "failed to disable regulator: %d\n", ret);
+	}
+}
+
+static int max8997_battery_extcon_evt(struct notifier_block *nb,
+				unsigned long event, void *param)
+{
+	struct charger_data *charger =
+		container_of(nb, struct charger_data, extcon_nb);
+	schedule_work(&charger->extcon_work);
+	return NOTIFY_OK;
+}
+
+static const struct power_supply_desc max8997_battery_desc = {
+	.name		= "max8997_pmic",
+	.type		= POWER_SUPPLY_TYPE_BATTERY,
+	.get_property	= max8997_battery_get_property,
+	.properties	= max8997_battery_props,
+	.num_properties	= ARRAY_SIZE(max8997_battery_props),
+};
+
+static int max8997_battery_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct charger_data *charger;
+	struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+	struct device_node *np = pdev->dev.of_node;
+	struct i2c_client *i2c = iodev->i2c;
+	struct max8997_platform_data *pdata = iodev->pdata;
+	struct power_supply_config psy_cfg = {};
+
+	if (!pdata) {
+		dev_err(&pdev->dev, "No platform data supplied.\n");
+		return -EINVAL;
+	}
+
+	if (pdata->eoc_mA) {
+		int val = (pdata->eoc_mA - 50) / 10;
+		if (val < 0)
+			val = 0;
+		if (val > 0xf)
+			val = 0xf;
+
+		ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL5,
+				val << ITOPOFF_SHIFT, ITOPOFF_MASK);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "Cannot use i2c bus.\n");
+			return ret;
+		}
+	}
+	switch (pdata->timeout) {
+	case 5:
+		ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1,
+				0x2 << TFCH_SHIFT, TFCH_MASK);
+		break;
+	case 6:
+		ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1,
+				0x3 << TFCH_SHIFT, TFCH_MASK);
+		break;
+	case 7:
+		ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1,
+				0x4 << TFCH_SHIFT, TFCH_MASK);
+		break;
+	case 0:
+		ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1,
+				0x7 << TFCH_SHIFT, TFCH_MASK);
+		break;
+	default:
+		dev_err(&pdev->dev, "incorrect timeout value (%d)\n",
+				pdata->timeout);
+		return -EINVAL;
+	}
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Cannot use i2c bus.\n");
+		return ret;
+	}
+
+	charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
+	if (!charger)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, charger);
+
+	charger->dev = &pdev->dev;
+	charger->iodev = iodev;
+
+	psy_cfg.drv_data = charger;
+
+	charger->battery = devm_power_supply_register(&pdev->dev,
+						 &max8997_battery_desc,
+						 &psy_cfg);
+	if (IS_ERR(charger->battery)) {
+		dev_err(&pdev->dev, "failed: power supply register\n");
+		return PTR_ERR(charger->battery);
+	}
+
+	// grab regulator from parent device's node
+	pdev->dev.of_node = iodev->dev->of_node;
+	charger->reg = devm_regulator_get_optional(&pdev->dev, "charger");
+	pdev->dev.of_node = np;
+	if (IS_ERR(charger->reg)) {
+		if (PTR_ERR(charger->reg) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+		dev_info(&pdev->dev, "couldn't get charger regulator\n");
+	}
+	charger->edev = extcon_get_extcon_dev("max8997-muic");
+	if (IS_ERR(charger->edev)) {
+		dev_err_probe(charger->dev, PTR_ERR(charger->edev),
+			      "couldn't get extcon device: max8997-muic\n");
+		return PTR_ERR(charger->edev);
+	}
+
+	if (!IS_ERR(charger->reg) && !IS_ERR_OR_NULL(charger->edev)) {
+		ret = devm_work_autocancel(&pdev->dev, &charger->extcon_work,
+					   max8997_battery_extcon_evt_worker);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to add extcon evt stop action: %d\n", ret);
+			return ret;
+		}
+		charger->extcon_nb.notifier_call = max8997_battery_extcon_evt;
+		ret = devm_extcon_register_notifier_all(&pdev->dev, charger->edev,
+							&charger->extcon_nb);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to register extcon notifier\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id max8997_battery_id[] = {
+	{ "max8997-battery", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, max8997_battery_id);
+
+static struct platform_driver max8997_battery_driver = {
+	.driver = {
+		.name = "max8997-battery",
+	},
+	.probe = max8997_battery_probe,
+	.id_table = max8997_battery_id,
+};
+module_platform_driver(max8997_battery_driver);
+
+MODULE_DESCRIPTION("MAXIM 8997/8966 battery control driver");
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_LICENSE("GPL");