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, 278 insertions, 0 deletions

diff --git a/drivers/input/keyboard/nspire-keypad.c b/drivers/input/keyboard/nspire-keypad.c
new file mode 100644
index 000000000..e9fa1423f
--- /dev/null
+++ b/drivers/input/keyboard/nspire-keypad.c
@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ */
+
+#include <linux/input/matrix_keypad.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#define KEYPAD_SCAN_MODE	0x00
+#define KEYPAD_CNTL		0x04
+#define KEYPAD_INT		0x08
+#define KEYPAD_INTMSK		0x0C
+
+#define KEYPAD_DATA		0x10
+#define KEYPAD_GPIO		0x30
+
+#define KEYPAD_UNKNOWN_INT	0x40
+#define KEYPAD_UNKNOWN_INT_STS	0x44
+
+#define KEYPAD_BITMASK_COLS	11
+#define KEYPAD_BITMASK_ROWS	8
+
+struct nspire_keypad {
+	void __iomem *reg_base;
+	u32 int_mask;
+
+	struct input_dev *input;
+	struct clk *clk;
+
+	struct matrix_keymap_data *keymap;
+	int row_shift;
+
+	/* Maximum delay estimated assuming 33MHz APB */
+	u32 scan_interval;	/* In microseconds (~2000us max) */
+	u32 row_delay;		/* In microseconds (~500us max) */
+
+	u16 state[KEYPAD_BITMASK_ROWS];
+
+	bool active_low;
+};
+
+static irqreturn_t nspire_keypad_irq(int irq, void *dev_id)
+{
+	struct nspire_keypad *keypad = dev_id;
+	struct input_dev *input = keypad->input;
+	unsigned short *keymap = input->keycode;
+	unsigned int code;
+	int row, col;
+	u32 int_sts;
+	u16 state[8];
+	u16 bits, changed;
+
+	int_sts = readl(keypad->reg_base + KEYPAD_INT) & keypad->int_mask;
+	if (!int_sts)
+		return IRQ_NONE;
+
+	memcpy_fromio(state, keypad->reg_base + KEYPAD_DATA, sizeof(state));
+
+	for (row = 0; row < KEYPAD_BITMASK_ROWS; row++) {
+		bits = state[row];
+		if (keypad->active_low)
+			bits = ~bits;
+
+		changed = bits ^ keypad->state[row];
+		if (!changed)
+			continue;
+
+		keypad->state[row] = bits;
+
+		for (col = 0; col < KEYPAD_BITMASK_COLS; col++) {
+			if (!(changed & (1U << col)))
+				continue;
+
+			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
+			input_event(input, EV_MSC, MSC_SCAN, code);
+			input_report_key(input, keymap[code],
+					 bits & (1U << col));
+		}
+	}
+
+	input_sync(input);
+
+	writel(0x3, keypad->reg_base + KEYPAD_INT);
+
+	return IRQ_HANDLED;
+}
+
+static int nspire_keypad_open(struct input_dev *input)
+{
+	struct nspire_keypad *keypad = input_get_drvdata(input);
+	unsigned long val = 0, cycles_per_us, delay_cycles, row_delay_cycles;
+	int error;
+
+	error = clk_prepare_enable(keypad->clk);
+	if (error)
+		return error;
+
+	cycles_per_us = (clk_get_rate(keypad->clk) / 1000000);
+	if (cycles_per_us == 0)
+		cycles_per_us = 1;
+
+	delay_cycles = cycles_per_us * keypad->scan_interval;
+	WARN_ON(delay_cycles >= (1 << 16)); /* Overflow */
+	delay_cycles &= 0xffff;
+
+	row_delay_cycles = cycles_per_us * keypad->row_delay;
+	WARN_ON(row_delay_cycles >= (1 << 14)); /* Overflow */
+	row_delay_cycles &= 0x3fff;
+
+	val |= 3 << 0; /* Set scan mode to 3 (continuous scan) */
+	val |= row_delay_cycles << 2; /* Delay between scanning each row */
+	val |= delay_cycles << 16; /* Delay between scans */
+	writel(val, keypad->reg_base + KEYPAD_SCAN_MODE);
+
+	val = (KEYPAD_BITMASK_ROWS & 0xff) | (KEYPAD_BITMASK_COLS & 0xff)<<8;
+	writel(val, keypad->reg_base + KEYPAD_CNTL);
+
+	/* Enable interrupts */
+	keypad->int_mask = 1 << 1;
+	writel(keypad->int_mask, keypad->reg_base + KEYPAD_INTMSK);
+
+	return 0;
+}
+
+static void nspire_keypad_close(struct input_dev *input)
+{
+	struct nspire_keypad *keypad = input_get_drvdata(input);
+
+	/* Disable interrupts */
+	writel(0, keypad->reg_base + KEYPAD_INTMSK);
+	/* Acknowledge existing interrupts */
+	writel(~0, keypad->reg_base + KEYPAD_INT);
+
+	clk_disable_unprepare(keypad->clk);
+}
+
+static int nspire_keypad_probe(struct platform_device *pdev)
+{
+	const struct device_node *of_node = pdev->dev.of_node;
+	struct nspire_keypad *keypad;
+	struct input_dev *input;
+	struct resource *res;
+	int irq;
+	int error;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return -EINVAL;
+
+	keypad = devm_kzalloc(&pdev->dev, sizeof(struct nspire_keypad),
+			      GFP_KERNEL);
+	if (!keypad) {
+		dev_err(&pdev->dev, "failed to allocate keypad memory\n");
+		return -ENOMEM;
+	}
+
+	keypad->row_shift = get_count_order(KEYPAD_BITMASK_COLS);
+
+	error = of_property_read_u32(of_node, "scan-interval",
+				     &keypad->scan_interval);
+	if (error) {
+		dev_err(&pdev->dev, "failed to get scan-interval\n");
+		return error;
+	}
+
+	error = of_property_read_u32(of_node, "row-delay",
+				     &keypad->row_delay);
+	if (error) {
+		dev_err(&pdev->dev, "failed to get row-delay\n");
+		return error;
+	}
+
+	keypad->active_low = of_property_read_bool(of_node, "active-low");
+
+	keypad->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(keypad->clk)) {
+		dev_err(&pdev->dev, "unable to get clock\n");
+		return PTR_ERR(keypad->clk);
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	keypad->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(keypad->reg_base))
+		return PTR_ERR(keypad->reg_base);
+
+	keypad->input = input = devm_input_allocate_device(&pdev->dev);
+	if (!input) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	error = clk_prepare_enable(keypad->clk);
+	if (error) {
+		dev_err(&pdev->dev, "failed to enable clock\n");
+		return error;
+	}
+
+	/* Disable interrupts */
+	writel(0, keypad->reg_base + KEYPAD_INTMSK);
+	/* Acknowledge existing interrupts */
+	writel(~0, keypad->reg_base + KEYPAD_INT);
+
+	/* Disable GPIO interrupts to prevent hanging on touchpad */
+	/* Possibly used to detect touchpad events */
+	writel(0, keypad->reg_base + KEYPAD_UNKNOWN_INT);
+	/* Acknowledge existing GPIO interrupts */
+	writel(~0, keypad->reg_base + KEYPAD_UNKNOWN_INT_STS);
+
+	clk_disable_unprepare(keypad->clk);
+
+	input_set_drvdata(input, keypad);
+
+	input->id.bustype = BUS_HOST;
+	input->name = "nspire-keypad";
+	input->open = nspire_keypad_open;
+	input->close = nspire_keypad_close;
+
+	__set_bit(EV_KEY, input->evbit);
+	__set_bit(EV_REP, input->evbit);
+	input_set_capability(input, EV_MSC, MSC_SCAN);
+
+	error = matrix_keypad_build_keymap(NULL, NULL,
+					   KEYPAD_BITMASK_ROWS,
+					   KEYPAD_BITMASK_COLS,
+					   NULL, input);
+	if (error) {
+		dev_err(&pdev->dev, "building keymap failed\n");
+		return error;
+	}
+
+	error = devm_request_irq(&pdev->dev, irq, nspire_keypad_irq, 0,
+				 "nspire_keypad", keypad);
+	if (error) {
+		dev_err(&pdev->dev, "allocate irq %d failed\n", irq);
+		return error;
+	}
+
+	error = input_register_device(input);
+	if (error) {
+		dev_err(&pdev->dev,
+			"unable to register input device: %d\n", error);
+		return error;
+	}
+
+	dev_dbg(&pdev->dev,
+		"TI-NSPIRE keypad at %pR (scan_interval=%uus, row_delay=%uus%s)\n",
+		res, keypad->row_delay, keypad->scan_interval,
+		keypad->active_low ? ", active_low" : "");
+
+	return 0;
+}
+
+static const struct of_device_id nspire_keypad_dt_match[] = {
+	{ .compatible = "ti,nspire-keypad" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, nspire_keypad_dt_match);
+
+static struct platform_driver nspire_keypad_driver = {
+	.driver = {
+		.name = "nspire-keypad",
+		.of_match_table = nspire_keypad_dt_match,
+	},
+	.probe = nspire_keypad_probe,
+};
+
+module_platform_driver(nspire_keypad_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TI-NSPIRE Keypad Driver");