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, 315 insertions, 0 deletions

diff --git a/drivers/regulator/max1586.c b/drivers/regulator/max1586.c
new file mode 100644
index 000000000..a00aa2e8f
--- /dev/null
+++ b/drivers/regulator/max1586.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * max1586.c  --  Voltage and current regulation for the Maxim 1586
+ *
+ * Copyright (C) 2008 Robert Jarzmik
+ */
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/slab.h>
+#include <linux/regulator/max1586.h>
+#include <linux/of_device.h>
+#include <linux/regulator/of_regulator.h>
+
+#define MAX1586_V3_MAX_VSEL 31
+#define MAX1586_V6_MAX_VSEL 3
+
+#define MAX1586_V3_MIN_UV   700000
+#define MAX1586_V3_MAX_UV  1475000
+
+#define MAX1586_V6_MIN_UV        0
+#define MAX1586_V6_MAX_UV  3000000
+
+#define I2C_V3_SELECT (0 << 5)
+#define I2C_V6_SELECT (1 << 5)
+
+struct max1586_data {
+	struct i2c_client *client;
+
+	/* min/max V3 voltage */
+	unsigned int min_uV;
+	unsigned int max_uV;
+
+	unsigned int v3_curr_sel;
+	unsigned int v6_curr_sel;
+};
+
+/*
+ * V6 voltage
+ * On I2C bus, sending a "x" byte to the max1586 means :
+ *   set V6 to either 0V, 1.8V, 2.5V, 3V depending on (x & 0x3)
+ * As regulator framework doesn't accept voltages to be 0V, we use 1uV.
+ */
+static const unsigned int v6_voltages_uv[] = { 1, 1800000, 2500000, 3000000 };
+
+/*
+ * V3 voltage
+ * On I2C bus, sending a "x" byte to the max1586 means :
+ *   set V3 to 0.700V + (x & 0x1f) * 0.025V
+ * This voltage can be increased by external resistors
+ * R24 and R25=100kOhm as described in the data sheet.
+ * The gain is approximately: 1 + R24/R25 + R24/185.5kOhm
+ */
+static int max1586_v3_get_voltage_sel(struct regulator_dev *rdev)
+{
+	struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+
+	return max1586->v3_curr_sel;
+}
+
+static int max1586_v3_set_voltage_sel(struct regulator_dev *rdev,
+				      unsigned selector)
+{
+	struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+	struct i2c_client *client = max1586->client;
+	int ret;
+	u8 v3_prog;
+
+	dev_dbg(&client->dev, "changing voltage v3 to %dmv\n",
+		regulator_list_voltage_linear(rdev, selector) / 1000);
+
+	v3_prog = I2C_V3_SELECT | (u8) selector;
+	ret = i2c_smbus_write_byte(client, v3_prog);
+	if (ret)
+		return ret;
+
+	max1586->v3_curr_sel = selector;
+
+	return 0;
+}
+
+static int max1586_v6_get_voltage_sel(struct regulator_dev *rdev)
+{
+	struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+
+	return max1586->v6_curr_sel;
+}
+
+static int max1586_v6_set_voltage_sel(struct regulator_dev *rdev,
+				      unsigned int selector)
+{
+	struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+	struct i2c_client *client = max1586->client;
+	u8 v6_prog;
+	int ret;
+
+	dev_dbg(&client->dev, "changing voltage v6 to %dmv\n",
+		rdev->desc->volt_table[selector] / 1000);
+
+	v6_prog = I2C_V6_SELECT | (u8) selector;
+	ret = i2c_smbus_write_byte(client, v6_prog);
+	if (ret)
+		return ret;
+
+	max1586->v6_curr_sel = selector;
+
+	return 0;
+}
+
+/*
+ * The Maxim 1586 controls V3 and V6 voltages, but offers no way of reading back
+ * the set up value.
+ */
+static const struct regulator_ops max1586_v3_ops = {
+	.get_voltage_sel = max1586_v3_get_voltage_sel,
+	.set_voltage_sel = max1586_v3_set_voltage_sel,
+	.list_voltage = regulator_list_voltage_linear,
+	.map_voltage = regulator_map_voltage_linear,
+};
+
+static const struct regulator_ops max1586_v6_ops = {
+	.get_voltage_sel = max1586_v6_get_voltage_sel,
+	.set_voltage_sel = max1586_v6_set_voltage_sel,
+	.list_voltage = regulator_list_voltage_table,
+};
+
+static struct regulator_desc max1586_reg[] = {
+	{
+		.name = "Output_V3",
+		.id = MAX1586_V3,
+		.ops = &max1586_v3_ops,
+		.type = REGULATOR_VOLTAGE,
+		.n_voltages = MAX1586_V3_MAX_VSEL + 1,
+		.owner = THIS_MODULE,
+	},
+	{
+		.name = "Output_V6",
+		.id = MAX1586_V6,
+		.ops = &max1586_v6_ops,
+		.type = REGULATOR_VOLTAGE,
+		.n_voltages = MAX1586_V6_MAX_VSEL + 1,
+		.volt_table = v6_voltages_uv,
+		.owner = THIS_MODULE,
+	},
+};
+
+static int of_get_max1586_platform_data(struct device *dev,
+				 struct max1586_platform_data *pdata)
+{
+	struct max1586_subdev_data *sub;
+	struct of_regulator_match rmatch[ARRAY_SIZE(max1586_reg)] = { };
+	struct device_node *np = dev->of_node;
+	int i, matched;
+
+	if (of_property_read_u32(np, "v3-gain",
+				 &pdata->v3_gain) < 0) {
+		dev_err(dev, "%pOF has no 'v3-gain' property\n", np);
+		return -EINVAL;
+	}
+
+	np = of_get_child_by_name(np, "regulators");
+	if (!np) {
+		dev_err(dev, "missing 'regulators' subnode in DT\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(rmatch); i++)
+		rmatch[i].name = max1586_reg[i].name;
+
+	matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(rmatch));
+	of_node_put(np);
+	/*
+	 * If matched is 0, ie. neither Output_V3 nor Output_V6 have been found,
+	 * return 0, which signals the normal situation where no subregulator is
+	 * available. This is normal because the max1586 doesn't provide any
+	 * readback support, so the subregulators can't report any status
+	 * anyway.  If matched < 0, return the error.
+	 */
+	if (matched <= 0)
+		return matched;
+
+	pdata->subdevs = devm_kcalloc(dev,
+				      matched,
+				      sizeof(struct max1586_subdev_data),
+				      GFP_KERNEL);
+	if (!pdata->subdevs)
+		return -ENOMEM;
+
+	pdata->num_subdevs = matched;
+	sub = pdata->subdevs;
+
+	for (i = 0; i < matched; i++) {
+		sub->id = i;
+		sub->name = rmatch[i].of_node->name;
+		sub->platform_data = rmatch[i].init_data;
+		sub++;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused max1586_of_match[] = {
+	{ .compatible = "maxim,max1586", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, max1586_of_match);
+
+static int max1586_pmic_probe(struct i2c_client *client)
+{
+	struct max1586_platform_data *pdata, pdata_of;
+	struct regulator_config config = { };
+	struct max1586_data *max1586;
+	int i, id, ret;
+	const struct of_device_id *match;
+
+	pdata = dev_get_platdata(&client->dev);
+	if (client->dev.of_node && !pdata) {
+		match = of_match_device(of_match_ptr(max1586_of_match),
+					&client->dev);
+		if (!match) {
+			dev_err(&client->dev, "Error: No device match found\n");
+			return -ENODEV;
+		}
+		ret = of_get_max1586_platform_data(&client->dev, &pdata_of);
+		if (ret < 0)
+			return ret;
+		pdata = &pdata_of;
+	}
+
+	max1586 = devm_kzalloc(&client->dev, sizeof(struct max1586_data),
+			GFP_KERNEL);
+	if (!max1586)
+		return -ENOMEM;
+
+	max1586->client = client;
+
+	if (!pdata->v3_gain)
+		return -EINVAL;
+
+	max1586->min_uV = MAX1586_V3_MIN_UV / 1000 * pdata->v3_gain / 1000;
+	max1586->max_uV = MAX1586_V3_MAX_UV / 1000 * pdata->v3_gain / 1000;
+
+	/* Set curr_sel to default voltage on power-up */
+	max1586->v3_curr_sel = 24; /* 1.3V */
+	max1586->v6_curr_sel = 0;
+
+	for (i = 0; i < pdata->num_subdevs && i <= MAX1586_V6; i++) {
+		struct regulator_dev *rdev;
+
+		id = pdata->subdevs[i].id;
+		if (!pdata->subdevs[i].platform_data)
+			continue;
+		if (id < MAX1586_V3 || id > MAX1586_V6) {
+			dev_err(&client->dev, "invalid regulator id %d\n", id);
+			return -EINVAL;
+		}
+
+		if (id == MAX1586_V3) {
+			max1586_reg[id].min_uV = max1586->min_uV;
+			max1586_reg[id].uV_step =
+					(max1586->max_uV - max1586->min_uV) /
+					MAX1586_V3_MAX_VSEL;
+		}
+
+		config.dev = &client->dev;
+		config.init_data = pdata->subdevs[i].platform_data;
+		config.driver_data = max1586;
+
+		rdev = devm_regulator_register(&client->dev,
+						  &max1586_reg[id], &config);
+		if (IS_ERR(rdev)) {
+			dev_err(&client->dev, "failed to register %s\n",
+				max1586_reg[id].name);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	i2c_set_clientdata(client, max1586);
+	dev_info(&client->dev, "Maxim 1586 regulator driver loaded\n");
+	return 0;
+}
+
+static const struct i2c_device_id max1586_id[] = {
+	{ "max1586", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max1586_id);
+
+static struct i2c_driver max1586_pmic_driver = {
+	.probe_new = max1586_pmic_probe,
+	.driver		= {
+		.name	= "max1586",
+		.of_match_table = of_match_ptr(max1586_of_match),
+	},
+	.id_table	= max1586_id,
+};
+
+static int __init max1586_pmic_init(void)
+{
+	return i2c_add_driver(&max1586_pmic_driver);
+}
+subsys_initcall(max1586_pmic_init);
+
+static void __exit max1586_pmic_exit(void)
+{
+	i2c_del_driver(&max1586_pmic_driver);
+}
+module_exit(max1586_pmic_exit);
+
+/* Module information */
+MODULE_DESCRIPTION("MAXIM 1586 voltage regulator driver");
+MODULE_AUTHOR("Robert Jarzmik");
+MODULE_LICENSE("GPL");