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, 291 insertions, 0 deletions

diff --git a/drivers/media/rc/ir-rx51.c b/drivers/media/rc/ir-rx51.c
new file mode 100644
index 000000000..85080c3d2
--- /dev/null
+++ b/drivers/media/rc/ir-rx51.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (C) 2008 Nokia Corporation
+ *
+ *  Based on lirc_serial.c
+ */
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/wait.h>
+#include <linux/pwm.h>
+#include <linux/of.h>
+#include <linux/hrtimer.h>
+
+#include <media/rc-core.h>
+
+#define WBUF_LEN 256
+
+struct ir_rx51 {
+	struct rc_dev *rcdev;
+	struct pwm_device *pwm;
+	struct pwm_state state;
+	struct hrtimer timer;
+	struct device	     *dev;
+	wait_queue_head_t     wqueue;
+
+	unsigned int	freq;		/* carrier frequency */
+	unsigned int	duty_cycle;	/* carrier duty cycle */
+	int		wbuf[WBUF_LEN];
+	int		wbuf_index;
+	unsigned long	device_is_open;
+};
+
+static inline void ir_rx51_on(struct ir_rx51 *ir_rx51)
+{
+	ir_rx51->state.enabled = true;
+	pwm_apply_state(ir_rx51->pwm, &ir_rx51->state);
+}
+
+static inline void ir_rx51_off(struct ir_rx51 *ir_rx51)
+{
+	ir_rx51->state.enabled = false;
+	pwm_apply_state(ir_rx51->pwm, &ir_rx51->state);
+}
+
+static int init_timing_params(struct ir_rx51 *ir_rx51)
+{
+	ir_rx51->state.period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, ir_rx51->freq);
+	pwm_set_relative_duty_cycle(&ir_rx51->state, ir_rx51->duty_cycle, 100);
+
+	return 0;
+}
+
+static enum hrtimer_restart ir_rx51_timer_cb(struct hrtimer *timer)
+{
+	struct ir_rx51 *ir_rx51 = container_of(timer, struct ir_rx51, timer);
+	ktime_t now;
+
+	if (ir_rx51->wbuf_index < 0) {
+		dev_err_ratelimited(ir_rx51->dev,
+				    "BUG wbuf_index has value of %i\n",
+				    ir_rx51->wbuf_index);
+		goto end;
+	}
+
+	/*
+	 * If we happen to hit an odd latency spike, loop through the
+	 * pulses until we catch up.
+	 */
+	do {
+		u64 ns;
+
+		if (ir_rx51->wbuf_index >= WBUF_LEN)
+			goto end;
+		if (ir_rx51->wbuf[ir_rx51->wbuf_index] == -1)
+			goto end;
+
+		if (ir_rx51->wbuf_index % 2)
+			ir_rx51_off(ir_rx51);
+		else
+			ir_rx51_on(ir_rx51);
+
+		ns = US_TO_NS(ir_rx51->wbuf[ir_rx51->wbuf_index]);
+		hrtimer_add_expires_ns(timer, ns);
+
+		ir_rx51->wbuf_index++;
+
+		now = timer->base->get_time();
+
+	} while (hrtimer_get_expires_tv64(timer) < now);
+
+	return HRTIMER_RESTART;
+end:
+	/* Stop TX here */
+	ir_rx51_off(ir_rx51);
+	ir_rx51->wbuf_index = -1;
+
+	wake_up_interruptible(&ir_rx51->wqueue);
+
+	return HRTIMER_NORESTART;
+}
+
+static int ir_rx51_tx(struct rc_dev *dev, unsigned int *buffer,
+		      unsigned int count)
+{
+	struct ir_rx51 *ir_rx51 = dev->priv;
+
+	if (count > WBUF_LEN)
+		return -EINVAL;
+
+	memcpy(ir_rx51->wbuf, buffer, count * sizeof(unsigned int));
+
+	/* Wait any pending transfers to finish */
+	wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
+
+	init_timing_params(ir_rx51);
+	if (count < WBUF_LEN)
+		ir_rx51->wbuf[count] = -1; /* Insert termination mark */
+
+	/*
+	 * REVISIT: Adjust latency requirements so the device doesn't go in too
+	 * deep sleep states with pm_qos_add_request().
+	 */
+
+	ir_rx51_on(ir_rx51);
+	ir_rx51->wbuf_index = 1;
+	hrtimer_start(&ir_rx51->timer,
+		      ns_to_ktime(US_TO_NS(ir_rx51->wbuf[0])),
+		      HRTIMER_MODE_REL);
+	/*
+	 * Don't return back to the userspace until the transfer has
+	 * finished
+	 */
+	wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
+
+	/* REVISIT: Remove pm_qos constraint, we can sleep again */
+
+	return count;
+}
+
+static int ir_rx51_open(struct rc_dev *dev)
+{
+	struct ir_rx51 *ir_rx51 = dev->priv;
+
+	if (test_and_set_bit(1, &ir_rx51->device_is_open))
+		return -EBUSY;
+
+	ir_rx51->pwm = pwm_get(ir_rx51->dev, NULL);
+	if (IS_ERR(ir_rx51->pwm)) {
+		int res = PTR_ERR(ir_rx51->pwm);
+
+		dev_err(ir_rx51->dev, "pwm_get failed: %d\n", res);
+		return res;
+	}
+
+	return 0;
+}
+
+static void ir_rx51_release(struct rc_dev *dev)
+{
+	struct ir_rx51 *ir_rx51 = dev->priv;
+
+	hrtimer_cancel(&ir_rx51->timer);
+	ir_rx51_off(ir_rx51);
+	pwm_put(ir_rx51->pwm);
+
+	clear_bit(1, &ir_rx51->device_is_open);
+}
+
+static struct ir_rx51 ir_rx51 = {
+	.duty_cycle	= 50,
+	.wbuf_index	= -1,
+};
+
+static int ir_rx51_set_duty_cycle(struct rc_dev *dev, u32 duty)
+{
+	struct ir_rx51 *ir_rx51 = dev->priv;
+
+	ir_rx51->duty_cycle = duty;
+
+	return 0;
+}
+
+static int ir_rx51_set_tx_carrier(struct rc_dev *dev, u32 carrier)
+{
+	struct ir_rx51 *ir_rx51 = dev->priv;
+
+	if (carrier > 500000 || carrier < 20000)
+		return -EINVAL;
+
+	ir_rx51->freq = carrier;
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int ir_rx51_suspend(struct platform_device *dev, pm_message_t state)
+{
+	/*
+	 * In case the device is still open, do not suspend. Normally
+	 * this should not be a problem as lircd only keeps the device
+	 * open only for short periods of time. We also don't want to
+	 * get involved with race conditions that might happen if we
+	 * were in a middle of a transmit. Thus, we defer any suspend
+	 * actions until transmit has completed.
+	 */
+	if (test_and_set_bit(1, &ir_rx51.device_is_open))
+		return -EAGAIN;
+
+	clear_bit(1, &ir_rx51.device_is_open);
+
+	return 0;
+}
+
+static int ir_rx51_resume(struct platform_device *dev)
+{
+	return 0;
+}
+
+#else
+
+#define ir_rx51_suspend	NULL
+#define ir_rx51_resume	NULL
+
+#endif /* CONFIG_PM */
+
+static int ir_rx51_probe(struct platform_device *dev)
+{
+	struct pwm_device *pwm;
+	struct rc_dev *rcdev;
+
+	pwm = pwm_get(&dev->dev, NULL);
+	if (IS_ERR(pwm))
+		return dev_err_probe(&dev->dev, PTR_ERR(pwm), "pwm_get failed\n");
+
+	/* Use default, in case userspace does not set the carrier */
+	ir_rx51.freq = DIV_ROUND_CLOSEST_ULL(pwm_get_period(pwm), NSEC_PER_SEC);
+	pwm_init_state(pwm, &ir_rx51.state);
+	pwm_put(pwm);
+
+	hrtimer_init(&ir_rx51.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+	ir_rx51.timer.function = ir_rx51_timer_cb;
+
+	ir_rx51.dev = &dev->dev;
+
+	rcdev = devm_rc_allocate_device(&dev->dev, RC_DRIVER_IR_RAW_TX);
+	if (!rcdev)
+		return -ENOMEM;
+
+	rcdev->priv = &ir_rx51;
+	rcdev->open = ir_rx51_open;
+	rcdev->close = ir_rx51_release;
+	rcdev->tx_ir = ir_rx51_tx;
+	rcdev->s_tx_duty_cycle = ir_rx51_set_duty_cycle;
+	rcdev->s_tx_carrier = ir_rx51_set_tx_carrier;
+	rcdev->driver_name = KBUILD_MODNAME;
+
+	ir_rx51.rcdev = rcdev;
+
+	return devm_rc_register_device(&dev->dev, ir_rx51.rcdev);
+}
+
+static int ir_rx51_remove(struct platform_device *dev)
+{
+	return 0;
+}
+
+static const struct of_device_id ir_rx51_match[] = {
+	{
+		.compatible = "nokia,n900-ir",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, ir_rx51_match);
+
+static struct platform_driver ir_rx51_platform_driver = {
+	.probe		= ir_rx51_probe,
+	.remove		= ir_rx51_remove,
+	.suspend	= ir_rx51_suspend,
+	.resume		= ir_rx51_resume,
+	.driver		= {
+		.name	= KBUILD_MODNAME,
+		.of_match_table = of_match_ptr(ir_rx51_match),
+	},
+};
+module_platform_driver(ir_rx51_platform_driver);
+
+MODULE_DESCRIPTION("IR TX driver for Nokia RX51");
+MODULE_AUTHOR("Nokia Corporation");
+MODULE_LICENSE("GPL");