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, 244 insertions, 0 deletions

diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
new file mode 100644
index 000000000..1bd375fb1
--- /dev/null
+++ b/drivers/iio/adc/xilinx-xadc-events.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Xilinx XADC driver
+ *
+ * Copyright 2013 Analog Devices Inc.
+ *  Author: Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/kernel.h>
+
+#include "xilinx-xadc.h"
+
+static const struct iio_chan_spec *xadc_event_to_channel(
+	struct iio_dev *indio_dev, unsigned int event)
+{
+	switch (event) {
+	case XADC_THRESHOLD_OT_MAX:
+	case XADC_THRESHOLD_TEMP_MAX:
+		return &indio_dev->channels[0];
+	case XADC_THRESHOLD_VCCINT_MAX:
+	case XADC_THRESHOLD_VCCAUX_MAX:
+		return &indio_dev->channels[event];
+	default:
+		return &indio_dev->channels[event-1];
+	}
+}
+
+static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
+{
+	const struct iio_chan_spec *chan;
+
+	/* Temperature threshold error, we don't handle this yet */
+	if (event == 0)
+		return;
+
+	chan = xadc_event_to_channel(indio_dev, event);
+
+	if (chan->type == IIO_TEMP) {
+		/*
+		 * The temperature channel only supports over-temperature
+		 * events.
+		 */
+		iio_push_event(indio_dev,
+			IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
+				IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
+			iio_get_time_ns(indio_dev));
+	} else {
+		/*
+		 * For other channels we don't know whether it is a upper or
+		 * lower threshold event. Userspace will have to check the
+		 * channel value if it wants to know.
+		 */
+		iio_push_event(indio_dev,
+			IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
+				IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER),
+			iio_get_time_ns(indio_dev));
+	}
+}
+
+void xadc_handle_events(struct iio_dev *indio_dev, unsigned long events)
+{
+	unsigned int i;
+
+	for_each_set_bit(i, &events, 8)
+		xadc_handle_event(indio_dev, i);
+}
+
+static unsigned int xadc_get_threshold_offset(const struct iio_chan_spec *chan,
+	enum iio_event_direction dir)
+{
+	unsigned int offset;
+
+	if (chan->type == IIO_TEMP) {
+		offset = XADC_THRESHOLD_OT_MAX;
+	} else {
+		if (chan->channel < 2)
+			offset = chan->channel + 1;
+		else
+			offset = chan->channel + 6;
+	}
+
+	if (dir == IIO_EV_DIR_FALLING)
+		offset += 4;
+
+	return offset;
+}
+
+static unsigned int xadc_get_alarm_mask(const struct iio_chan_spec *chan)
+{
+	if (chan->type == IIO_TEMP)
+		return XADC_ALARM_OT_MASK;
+	switch (chan->channel) {
+	case 0:
+		return XADC_ALARM_VCCINT_MASK;
+	case 1:
+		return XADC_ALARM_VCCAUX_MASK;
+	case 2:
+		return XADC_ALARM_VCCBRAM_MASK;
+	case 3:
+		return XADC_ALARM_VCCPINT_MASK;
+	case 4:
+		return XADC_ALARM_VCCPAUX_MASK;
+	case 5:
+		return XADC_ALARM_VCCODDR_MASK;
+	default:
+		/* We will never get here */
+		return 0;
+	}
+}
+
+int xadc_read_event_config(struct iio_dev *indio_dev,
+	const struct iio_chan_spec *chan, enum iio_event_type type,
+	enum iio_event_direction dir)
+{
+	struct xadc *xadc = iio_priv(indio_dev);
+
+	return (bool)(xadc->alarm_mask & xadc_get_alarm_mask(chan));
+}
+
+int xadc_write_event_config(struct iio_dev *indio_dev,
+	const struct iio_chan_spec *chan, enum iio_event_type type,
+	enum iio_event_direction dir, int state)
+{
+	unsigned int alarm = xadc_get_alarm_mask(chan);
+	struct xadc *xadc = iio_priv(indio_dev);
+	uint16_t cfg, old_cfg;
+	int ret;
+
+	mutex_lock(&xadc->mutex);
+
+	if (state)
+		xadc->alarm_mask |= alarm;
+	else
+		xadc->alarm_mask &= ~alarm;
+
+	xadc->ops->update_alarm(xadc, xadc->alarm_mask);
+
+	ret = _xadc_read_adc_reg(xadc, XADC_REG_CONF1, &cfg);
+	if (ret)
+		goto err_out;
+
+	old_cfg = cfg;
+	cfg |= XADC_CONF1_ALARM_MASK;
+	cfg &= ~((xadc->alarm_mask & 0xf0) << 4); /* bram, pint, paux, ddr */
+	cfg &= ~((xadc->alarm_mask & 0x08) >> 3); /* ot */
+	cfg &= ~((xadc->alarm_mask & 0x07) << 1); /* temp, vccint, vccaux */
+	if (old_cfg != cfg)
+		ret = _xadc_write_adc_reg(xadc, XADC_REG_CONF1, cfg);
+
+err_out:
+	mutex_unlock(&xadc->mutex);
+
+	return ret;
+}
+
+int xadc_read_event_value(struct iio_dev *indio_dev,
+	const struct iio_chan_spec *chan, enum iio_event_type type,
+	enum iio_event_direction dir, enum iio_event_info info,
+	int *val, int *val2)
+{
+	unsigned int offset = xadc_get_threshold_offset(chan, dir);
+	struct xadc *xadc = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		*val = xadc->threshold[offset];
+		break;
+	case IIO_EV_INFO_HYSTERESIS:
+		*val = xadc->temp_hysteresis;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* MSB aligned */
+	*val >>= 16 - chan->scan_type.realbits;
+
+	return IIO_VAL_INT;
+}
+
+int xadc_write_event_value(struct iio_dev *indio_dev,
+	const struct iio_chan_spec *chan, enum iio_event_type type,
+	enum iio_event_direction dir, enum iio_event_info info,
+	int val, int val2)
+{
+	unsigned int offset = xadc_get_threshold_offset(chan, dir);
+	struct xadc *xadc = iio_priv(indio_dev);
+	int ret = 0;
+
+	/* MSB aligned */
+	val <<= 16 - chan->scan_type.realbits;
+
+	if (val < 0 || val > 0xffff)
+		return -EINVAL;
+
+	mutex_lock(&xadc->mutex);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		xadc->threshold[offset] = val;
+		break;
+	case IIO_EV_INFO_HYSTERESIS:
+		xadc->temp_hysteresis = val;
+		break;
+	default:
+		mutex_unlock(&xadc->mutex);
+		return -EINVAL;
+	}
+
+	if (chan->type == IIO_TEMP) {
+		/*
+		 * According to the datasheet we need to set the lower 4 bits to
+		 * 0x3, otherwise 125 degree celsius will be used as the
+		 * threshold.
+		 */
+		val |= 0x3;
+
+		/*
+		 * Since we store the hysteresis as relative (to the threshold)
+		 * value, but the hardware expects an absolute value we need to
+		 * recalcualte this value whenever the hysteresis or the
+		 * threshold changes.
+		 */
+		if (xadc->threshold[offset] < xadc->temp_hysteresis)
+			xadc->threshold[offset + 4] = 0;
+		else
+			xadc->threshold[offset + 4] = xadc->threshold[offset] -
+					xadc->temp_hysteresis;
+		ret = _xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(offset + 4),
+			xadc->threshold[offset + 4]);
+		if (ret)
+			goto out_unlock;
+	}
+
+	if (info == IIO_EV_INFO_VALUE)
+		ret = _xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(offset), val);
+
+out_unlock:
+	mutex_unlock(&xadc->mutex);
+
+	return ret;
+}