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, 302 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-hlwd.c b/drivers/gpio/gpio-hlwd.c
new file mode 100644
index 000000000..4e13e937f
--- /dev/null
+++ b/drivers/gpio/gpio-hlwd.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2008-2009 The GameCube Linux Team
+// Copyright (C) 2008,2009 Albert Herranz
+// Copyright (C) 2017-2018 Jonathan Neuschäfer
+//
+// Nintendo Wii (Hollywood) GPIO driver
+
+#include <linux/gpio/driver.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/slab.h>
+
+/*
+ * Register names and offsets courtesy of WiiBrew:
+ * https://wiibrew.org/wiki/Hardware/Hollywood_GPIOs
+ *
+ * Note that for most registers, there are two versions:
+ * - HW_GPIOB_* Is always accessible by the Broadway PowerPC core, but does
+ *   always give access to all GPIO lines
+ * - HW_GPIO_* Is only accessible by the Broadway PowerPC code if the memory
+ *   firewall (AHBPROT) in the Hollywood chipset has been configured to allow
+ *   such access.
+ *
+ * The ownership of each GPIO line can be configured in the HW_GPIO_OWNER
+ * register: A one bit configures the line for access via the HW_GPIOB_*
+ * registers, a zero bit indicates access via HW_GPIO_*. This driver uses
+ * HW_GPIOB_*.
+ */
+#define HW_GPIOB_OUT		0x00
+#define HW_GPIOB_DIR		0x04
+#define HW_GPIOB_IN		0x08
+#define HW_GPIOB_INTLVL		0x0c
+#define HW_GPIOB_INTFLAG	0x10
+#define HW_GPIOB_INTMASK	0x14
+#define HW_GPIOB_INMIR		0x18
+#define HW_GPIO_ENABLE		0x1c
+#define HW_GPIO_OUT		0x20
+#define HW_GPIO_DIR		0x24
+#define HW_GPIO_IN		0x28
+#define HW_GPIO_INTLVL		0x2c
+#define HW_GPIO_INTFLAG		0x30
+#define HW_GPIO_INTMASK		0x34
+#define HW_GPIO_INMIR		0x38
+#define HW_GPIO_OWNER		0x3c
+
+struct hlwd_gpio {
+	struct gpio_chip gpioc;
+	struct irq_chip irqc;
+	void __iomem *regs;
+	int irq;
+	u32 edge_emulation;
+	u32 rising_edge, falling_edge;
+};
+
+static void hlwd_gpio_irqhandler(struct irq_desc *desc)
+{
+	struct hlwd_gpio *hlwd =
+		gpiochip_get_data(irq_desc_get_handler_data(desc));
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+	unsigned long flags;
+	unsigned long pending;
+	int hwirq;
+	u32 emulated_pending;
+
+	raw_spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags);
+	pending = ioread32be(hlwd->regs + HW_GPIOB_INTFLAG);
+	pending &= ioread32be(hlwd->regs + HW_GPIOB_INTMASK);
+
+	/* Treat interrupts due to edge trigger emulation separately */
+	emulated_pending = hlwd->edge_emulation & pending;
+	pending &= ~emulated_pending;
+	if (emulated_pending) {
+		u32 level, rising, falling;
+
+		level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL);
+		rising = level & emulated_pending;
+		falling = ~level & emulated_pending;
+
+		/* Invert the levels */
+		iowrite32be(level ^ emulated_pending,
+			    hlwd->regs + HW_GPIOB_INTLVL);
+
+		/* Ack all emulated-edge interrupts */
+		iowrite32be(emulated_pending, hlwd->regs + HW_GPIOB_INTFLAG);
+
+		/* Signal interrupts only on the correct edge */
+		rising &= hlwd->rising_edge;
+		falling &= hlwd->falling_edge;
+
+		/* Mark emulated interrupts as pending */
+		pending |= rising | falling;
+	}
+	raw_spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags);
+
+	chained_irq_enter(chip, desc);
+
+	for_each_set_bit(hwirq, &pending, 32)
+		generic_handle_domain_irq(hlwd->gpioc.irq.domain, hwirq);
+
+	chained_irq_exit(chip, desc);
+}
+
+static void hlwd_gpio_irq_ack(struct irq_data *data)
+{
+	struct hlwd_gpio *hlwd =
+		gpiochip_get_data(irq_data_get_irq_chip_data(data));
+
+	iowrite32be(BIT(data->hwirq), hlwd->regs + HW_GPIOB_INTFLAG);
+}
+
+static void hlwd_gpio_irq_mask(struct irq_data *data)
+{
+	struct hlwd_gpio *hlwd =
+		gpiochip_get_data(irq_data_get_irq_chip_data(data));
+	unsigned long flags;
+	u32 mask;
+
+	raw_spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags);
+	mask = ioread32be(hlwd->regs + HW_GPIOB_INTMASK);
+	mask &= ~BIT(data->hwirq);
+	iowrite32be(mask, hlwd->regs + HW_GPIOB_INTMASK);
+	raw_spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags);
+}
+
+static void hlwd_gpio_irq_unmask(struct irq_data *data)
+{
+	struct hlwd_gpio *hlwd =
+		gpiochip_get_data(irq_data_get_irq_chip_data(data));
+	unsigned long flags;
+	u32 mask;
+
+	raw_spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags);
+	mask = ioread32be(hlwd->regs + HW_GPIOB_INTMASK);
+	mask |= BIT(data->hwirq);
+	iowrite32be(mask, hlwd->regs + HW_GPIOB_INTMASK);
+	raw_spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags);
+}
+
+static void hlwd_gpio_irq_enable(struct irq_data *data)
+{
+	hlwd_gpio_irq_ack(data);
+	hlwd_gpio_irq_unmask(data);
+}
+
+static void hlwd_gpio_irq_setup_emulation(struct hlwd_gpio *hlwd, int hwirq,
+					  unsigned int flow_type)
+{
+	u32 level, state;
+
+	/* Set the trigger level to the inactive level */
+	level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL);
+	state = ioread32be(hlwd->regs + HW_GPIOB_IN) & BIT(hwirq);
+	level &= ~BIT(hwirq);
+	level |= state ^ BIT(hwirq);
+	iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL);
+
+	hlwd->edge_emulation |= BIT(hwirq);
+	hlwd->rising_edge &= ~BIT(hwirq);
+	hlwd->falling_edge &= ~BIT(hwirq);
+	if (flow_type & IRQ_TYPE_EDGE_RISING)
+		hlwd->rising_edge |= BIT(hwirq);
+	if (flow_type & IRQ_TYPE_EDGE_FALLING)
+		hlwd->falling_edge |= BIT(hwirq);
+}
+
+static int hlwd_gpio_irq_set_type(struct irq_data *data, unsigned int flow_type)
+{
+	struct hlwd_gpio *hlwd =
+		gpiochip_get_data(irq_data_get_irq_chip_data(data));
+	unsigned long flags;
+	u32 level;
+
+	raw_spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags);
+
+	hlwd->edge_emulation &= ~BIT(data->hwirq);
+
+	switch (flow_type) {
+	case IRQ_TYPE_LEVEL_HIGH:
+		level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL);
+		level |= BIT(data->hwirq);
+		iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL);
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		level = ioread32be(hlwd->regs + HW_GPIOB_INTLVL);
+		level &= ~BIT(data->hwirq);
+		iowrite32be(level, hlwd->regs + HW_GPIOB_INTLVL);
+		break;
+	case IRQ_TYPE_EDGE_RISING:
+	case IRQ_TYPE_EDGE_FALLING:
+	case IRQ_TYPE_EDGE_BOTH:
+		hlwd_gpio_irq_setup_emulation(hlwd, data->hwirq, flow_type);
+		break;
+	default:
+		raw_spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags);
+		return -EINVAL;
+	}
+
+	raw_spin_unlock_irqrestore(&hlwd->gpioc.bgpio_lock, flags);
+	return 0;
+}
+
+static int hlwd_gpio_probe(struct platform_device *pdev)
+{
+	struct hlwd_gpio *hlwd;
+	u32 ngpios;
+	int res;
+
+	hlwd = devm_kzalloc(&pdev->dev, sizeof(*hlwd), GFP_KERNEL);
+	if (!hlwd)
+		return -ENOMEM;
+
+	hlwd->regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(hlwd->regs))
+		return PTR_ERR(hlwd->regs);
+
+	/*
+	 * Claim all GPIOs using the OWNER register. This will not work on
+	 * systems where the AHBPROT memory firewall hasn't been configured to
+	 * permit PPC access to HW_GPIO_*.
+	 *
+	 * Note that this has to happen before bgpio_init reads the
+	 * HW_GPIOB_OUT and HW_GPIOB_DIR, because otherwise it reads the wrong
+	 * values.
+	 */
+	iowrite32be(0xffffffff, hlwd->regs + HW_GPIO_OWNER);
+
+	res = bgpio_init(&hlwd->gpioc, &pdev->dev, 4,
+			hlwd->regs + HW_GPIOB_IN, hlwd->regs + HW_GPIOB_OUT,
+			NULL, hlwd->regs + HW_GPIOB_DIR, NULL,
+			BGPIOF_BIG_ENDIAN_BYTE_ORDER);
+	if (res < 0) {
+		dev_warn(&pdev->dev, "bgpio_init failed: %d\n", res);
+		return res;
+	}
+
+	res = of_property_read_u32(pdev->dev.of_node, "ngpios", &ngpios);
+	if (res)
+		ngpios = 32;
+	hlwd->gpioc.ngpio = ngpios;
+
+	/* Mask and ack all interrupts */
+	iowrite32be(0, hlwd->regs + HW_GPIOB_INTMASK);
+	iowrite32be(0xffffffff, hlwd->regs + HW_GPIOB_INTFLAG);
+
+	/*
+	 * If this GPIO controller is not marked as an interrupt controller in
+	 * the DT, skip interrupt support.
+	 */
+	if (of_property_read_bool(pdev->dev.of_node, "interrupt-controller")) {
+		struct gpio_irq_chip *girq;
+
+		hlwd->irq = platform_get_irq(pdev, 0);
+		if (hlwd->irq < 0) {
+			dev_info(&pdev->dev, "platform_get_irq returned %d\n",
+				 hlwd->irq);
+			return hlwd->irq;
+		}
+
+		hlwd->irqc.name = dev_name(&pdev->dev);
+		hlwd->irqc.irq_mask = hlwd_gpio_irq_mask;
+		hlwd->irqc.irq_unmask = hlwd_gpio_irq_unmask;
+		hlwd->irqc.irq_enable = hlwd_gpio_irq_enable;
+		hlwd->irqc.irq_set_type = hlwd_gpio_irq_set_type;
+
+		girq = &hlwd->gpioc.irq;
+		girq->chip = &hlwd->irqc;
+		girq->parent_handler = hlwd_gpio_irqhandler;
+		girq->num_parents = 1;
+		girq->parents = devm_kcalloc(&pdev->dev, 1,
+					     sizeof(*girq->parents),
+					     GFP_KERNEL);
+		if (!girq->parents)
+			return -ENOMEM;
+		girq->parents[0] = hlwd->irq;
+		girq->default_type = IRQ_TYPE_NONE;
+		girq->handler = handle_level_irq;
+	}
+
+	return devm_gpiochip_add_data(&pdev->dev, &hlwd->gpioc, hlwd);
+}
+
+static const struct of_device_id hlwd_gpio_match[] = {
+	{ .compatible = "nintendo,hollywood-gpio", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, hlwd_gpio_match);
+
+static struct platform_driver hlwd_gpio_driver = {
+	.driver	= {
+		.name		= "gpio-hlwd",
+		.of_match_table	= hlwd_gpio_match,
+	},
+	.probe	= hlwd_gpio_probe,
+};
+module_platform_driver(hlwd_gpio_driver);
+
+MODULE_AUTHOR("Jonathan Neuschäfer <j.neuschaefer@gmx.net>");
+MODULE_DESCRIPTION("Nintendo Wii GPIO driver");
+MODULE_LICENSE("GPL");