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, 186 insertions, 0 deletions

diff --git a/drivers/regulator/stm32-pwr.c b/drivers/regulator/stm32-pwr.c
new file mode 100644
index 000000000..2a42acb7c
--- /dev/null
+++ b/drivers/regulator/stm32-pwr.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) STMicroelectronics 2019
+// Authors: Gabriel Fernandez <gabriel.fernandez@st.com>
+//          Pascal Paillet <p.paillet@st.com>.
+
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * Registers description
+ */
+#define REG_PWR_CR3 0x0C
+
+#define USB_3_3_EN BIT(24)
+#define USB_3_3_RDY BIT(26)
+#define REG_1_8_EN BIT(28)
+#define REG_1_8_RDY BIT(29)
+#define REG_1_1_EN BIT(30)
+#define REG_1_1_RDY BIT(31)
+
+/* list of supported regulators */
+enum {
+	PWR_REG11,
+	PWR_REG18,
+	PWR_USB33,
+	STM32PWR_REG_NUM_REGS
+};
+
+static u32 ready_mask_table[STM32PWR_REG_NUM_REGS] = {
+	[PWR_REG11] = REG_1_1_RDY,
+	[PWR_REG18] = REG_1_8_RDY,
+	[PWR_USB33] = USB_3_3_RDY,
+};
+
+struct stm32_pwr_reg {
+	void __iomem *base;
+	u32 ready_mask;
+};
+
+static int stm32_pwr_reg_is_ready(struct regulator_dev *rdev)
+{
+	struct stm32_pwr_reg *priv = rdev_get_drvdata(rdev);
+	u32 val;
+
+	val = readl_relaxed(priv->base + REG_PWR_CR3);
+
+	return (val & priv->ready_mask);
+}
+
+static int stm32_pwr_reg_is_enabled(struct regulator_dev *rdev)
+{
+	struct stm32_pwr_reg *priv = rdev_get_drvdata(rdev);
+	u32 val;
+
+	val = readl_relaxed(priv->base + REG_PWR_CR3);
+
+	return (val & rdev->desc->enable_mask);
+}
+
+static int stm32_pwr_reg_enable(struct regulator_dev *rdev)
+{
+	struct stm32_pwr_reg *priv = rdev_get_drvdata(rdev);
+	int ret;
+	u32 val;
+
+	val = readl_relaxed(priv->base + REG_PWR_CR3);
+	val |= rdev->desc->enable_mask;
+	writel_relaxed(val, priv->base + REG_PWR_CR3);
+
+	/* use an arbitrary timeout of 20ms */
+	ret = readx_poll_timeout(stm32_pwr_reg_is_ready, rdev, val, val,
+				 100, 20 * 1000);
+	if (ret)
+		dev_err(&rdev->dev, "regulator enable timed out!\n");
+
+	return ret;
+}
+
+static int stm32_pwr_reg_disable(struct regulator_dev *rdev)
+{
+	struct stm32_pwr_reg *priv = rdev_get_drvdata(rdev);
+	int ret;
+	u32 val;
+
+	val = readl_relaxed(priv->base + REG_PWR_CR3);
+	val &= ~rdev->desc->enable_mask;
+	writel_relaxed(val, priv->base + REG_PWR_CR3);
+
+	/* use an arbitrary timeout of 20ms */
+	ret = readx_poll_timeout(stm32_pwr_reg_is_ready, rdev, val, !val,
+				 100, 20 * 1000);
+	if (ret)
+		dev_err(&rdev->dev, "regulator disable timed out!\n");
+
+	return ret;
+}
+
+static const struct regulator_ops stm32_pwr_reg_ops = {
+	.enable		= stm32_pwr_reg_enable,
+	.disable	= stm32_pwr_reg_disable,
+	.is_enabled	= stm32_pwr_reg_is_enabled,
+};
+
+#define PWR_REG(_id, _name, _volt, _en, _supply) \
+	[_id] = { \
+		.id = _id, \
+		.name = _name, \
+		.of_match = of_match_ptr(_name), \
+		.n_voltages = 1, \
+		.type = REGULATOR_VOLTAGE, \
+		.fixed_uV = _volt, \
+		.ops = &stm32_pwr_reg_ops, \
+		.enable_mask = _en, \
+		.owner = THIS_MODULE, \
+		.supply_name = _supply, \
+	} \
+
+static const struct regulator_desc stm32_pwr_desc[] = {
+	PWR_REG(PWR_REG11, "reg11", 1100000, REG_1_1_EN, "vdd"),
+	PWR_REG(PWR_REG18, "reg18", 1800000, REG_1_8_EN, "vdd"),
+	PWR_REG(PWR_USB33, "usb33", 3300000, USB_3_3_EN, "vdd_3v3_usbfs"),
+};
+
+static int stm32_pwr_regulator_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct stm32_pwr_reg *priv;
+	void __iomem *base;
+	struct regulator_dev *rdev;
+	struct regulator_config config = { };
+	int i, ret = 0;
+
+	base = of_iomap(np, 0);
+	if (!base) {
+		dev_err(&pdev->dev, "Unable to map IO memory\n");
+		return -ENOMEM;
+	}
+
+	config.dev = &pdev->dev;
+
+	for (i = 0; i < STM32PWR_REG_NUM_REGS; i++) {
+		priv = devm_kzalloc(&pdev->dev, sizeof(struct stm32_pwr_reg),
+				    GFP_KERNEL);
+		if (!priv)
+			return -ENOMEM;
+		priv->base = base;
+		priv->ready_mask = ready_mask_table[i];
+		config.driver_data = priv;
+
+		rdev = devm_regulator_register(&pdev->dev,
+					       &stm32_pwr_desc[i],
+					       &config);
+		if (IS_ERR(rdev)) {
+			ret = PTR_ERR(rdev);
+			dev_err(&pdev->dev,
+				"Failed to register regulator: %d\n", ret);
+			break;
+		}
+	}
+	return ret;
+}
+
+static const struct of_device_id __maybe_unused stm32_pwr_of_match[] = {
+	{ .compatible = "st,stm32mp1,pwr-reg", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, stm32_pwr_of_match);
+
+static struct platform_driver stm32_pwr_driver = {
+	.probe = stm32_pwr_regulator_probe,
+	.driver = {
+		.name  = "stm32-pwr-regulator",
+		.of_match_table = of_match_ptr(stm32_pwr_of_match),
+	},
+};
+module_platform_driver(stm32_pwr_driver);
+
+MODULE_DESCRIPTION("STM32MP1 PWR voltage regulator driver");
+MODULE_AUTHOR("Pascal Paillet <p.paillet@st.com>");
+MODULE_LICENSE("GPL v2");