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, 267 insertions, 0 deletions

diff --git a/sound/isa/sb/sb8_midi.c b/sound/isa/sb/sb8_midi.c
new file mode 100644
index 000000000..618366d5d
--- /dev/null
+++ b/sound/isa/sb/sb8_midi.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *  Routines for control of SoundBlaster cards - MIDI interface
+ *
+ * --
+ *
+ * Sun May  9 22:54:38 BST 1999 George David Morrison <gdm@gedamo.demon.co.uk>
+ *   Fixed typo in snd_sb8dsp_midi_new_device which prevented midi from 
+ *   working.
+ *
+ * Sun May 11 12:34:56 UTC 2003 Clemens Ladisch <clemens@ladisch.de>
+ *   Added full duplex UART mode for DSP version 2.0 and later.
+ */
+
+#include <linux/io.h>
+#include <linux/time.h>
+#include <sound/core.h>
+#include <sound/sb.h>
+
+
+irqreturn_t snd_sb8dsp_midi_interrupt(struct snd_sb *chip)
+{
+	struct snd_rawmidi *rmidi;
+	int max = 64;
+	char byte;
+
+	if (!chip)
+		return IRQ_NONE;
+	
+	rmidi = chip->rmidi;
+	if (!rmidi) {
+		inb(SBP(chip, DATA_AVAIL));	/* ack interrupt */
+		return IRQ_NONE;
+	}
+
+	spin_lock(&chip->midi_input_lock);
+	while (max-- > 0) {
+		if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
+			byte = inb(SBP(chip, READ));
+			if (chip->open & SB_OPEN_MIDI_INPUT_TRIGGER) {
+				snd_rawmidi_receive(chip->midi_substream_input, &byte, 1);
+			}
+		}
+	}
+	spin_unlock(&chip->midi_input_lock);
+	return IRQ_HANDLED;
+}
+
+static int snd_sb8dsp_midi_input_open(struct snd_rawmidi_substream *substream)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+	unsigned int valid_open_flags;
+
+	chip = substream->rmidi->private_data;
+	valid_open_flags = chip->hardware >= SB_HW_20
+		? SB_OPEN_MIDI_OUTPUT | SB_OPEN_MIDI_OUTPUT_TRIGGER : 0;
+	spin_lock_irqsave(&chip->open_lock, flags);
+	if (chip->open & ~valid_open_flags) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		return -EAGAIN;
+	}
+	chip->open |= SB_OPEN_MIDI_INPUT;
+	chip->midi_substream_input = substream;
+	if (!(chip->open & SB_OPEN_MIDI_OUTPUT)) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		snd_sbdsp_reset(chip);		/* reset DSP */
+		if (chip->hardware >= SB_HW_20)
+			snd_sbdsp_command(chip, SB_DSP_MIDI_UART_IRQ);
+	} else {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+	}
+	return 0;
+}
+
+static int snd_sb8dsp_midi_output_open(struct snd_rawmidi_substream *substream)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+	unsigned int valid_open_flags;
+
+	chip = substream->rmidi->private_data;
+	valid_open_flags = chip->hardware >= SB_HW_20
+		? SB_OPEN_MIDI_INPUT | SB_OPEN_MIDI_INPUT_TRIGGER : 0;
+	spin_lock_irqsave(&chip->open_lock, flags);
+	if (chip->open & ~valid_open_flags) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		return -EAGAIN;
+	}
+	chip->open |= SB_OPEN_MIDI_OUTPUT;
+	chip->midi_substream_output = substream;
+	if (!(chip->open & SB_OPEN_MIDI_INPUT)) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		snd_sbdsp_reset(chip);		/* reset DSP */
+		if (chip->hardware >= SB_HW_20)
+			snd_sbdsp_command(chip, SB_DSP_MIDI_UART_IRQ);
+	} else {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+	}
+	return 0;
+}
+
+static int snd_sb8dsp_midi_input_close(struct snd_rawmidi_substream *substream)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+
+	chip = substream->rmidi->private_data;
+	spin_lock_irqsave(&chip->open_lock, flags);
+	chip->open &= ~(SB_OPEN_MIDI_INPUT | SB_OPEN_MIDI_INPUT_TRIGGER);
+	chip->midi_substream_input = NULL;
+	if (!(chip->open & SB_OPEN_MIDI_OUTPUT)) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		snd_sbdsp_reset(chip);		/* reset DSP */
+	} else {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+	}
+	return 0;
+}
+
+static int snd_sb8dsp_midi_output_close(struct snd_rawmidi_substream *substream)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+
+	chip = substream->rmidi->private_data;
+	del_timer_sync(&chip->midi_timer);
+	spin_lock_irqsave(&chip->open_lock, flags);
+	chip->open &= ~(SB_OPEN_MIDI_OUTPUT | SB_OPEN_MIDI_OUTPUT_TRIGGER);
+	chip->midi_substream_output = NULL;
+	if (!(chip->open & SB_OPEN_MIDI_INPUT)) {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+		snd_sbdsp_reset(chip);		/* reset DSP */
+	} else {
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+	}
+	return 0;
+}
+
+static void snd_sb8dsp_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+
+	chip = substream->rmidi->private_data;
+	spin_lock_irqsave(&chip->open_lock, flags);
+	if (up) {
+		if (!(chip->open & SB_OPEN_MIDI_INPUT_TRIGGER)) {
+			if (chip->hardware < SB_HW_20)
+				snd_sbdsp_command(chip, SB_DSP_MIDI_INPUT_IRQ);
+			chip->open |= SB_OPEN_MIDI_INPUT_TRIGGER;
+		}
+	} else {
+		if (chip->open & SB_OPEN_MIDI_INPUT_TRIGGER) {
+			if (chip->hardware < SB_HW_20)
+				snd_sbdsp_command(chip, SB_DSP_MIDI_INPUT_IRQ);
+			chip->open &= ~SB_OPEN_MIDI_INPUT_TRIGGER;
+		}
+	}
+	spin_unlock_irqrestore(&chip->open_lock, flags);
+}
+
+static void snd_sb8dsp_midi_output_write(struct snd_rawmidi_substream *substream)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+	char byte;
+	int max = 32;
+
+	/* how big is Tx FIFO? */
+	chip = substream->rmidi->private_data;
+	while (max-- > 0) {
+		spin_lock_irqsave(&chip->open_lock, flags);
+		if (snd_rawmidi_transmit_peek(substream, &byte, 1) != 1) {
+			chip->open &= ~SB_OPEN_MIDI_OUTPUT_TRIGGER;
+			del_timer(&chip->midi_timer);
+			spin_unlock_irqrestore(&chip->open_lock, flags);
+			break;
+		}
+		if (chip->hardware >= SB_HW_20) {
+			int timeout = 8;
+			while ((inb(SBP(chip, STATUS)) & 0x80) != 0 && --timeout > 0)
+				;
+			if (timeout == 0) {
+				/* Tx FIFO full - try again later */
+				spin_unlock_irqrestore(&chip->open_lock, flags);
+				break;
+			}
+			outb(byte, SBP(chip, WRITE));
+		} else {
+			snd_sbdsp_command(chip, SB_DSP_MIDI_OUTPUT);
+			snd_sbdsp_command(chip, byte);
+		}
+		snd_rawmidi_transmit_ack(substream, 1);
+		spin_unlock_irqrestore(&chip->open_lock, flags);
+	}
+}
+
+static void snd_sb8dsp_midi_output_timer(struct timer_list *t)
+{
+	struct snd_sb *chip = from_timer(chip, t, midi_timer);
+	struct snd_rawmidi_substream *substream = chip->midi_substream_output;
+	unsigned long flags;
+
+	spin_lock_irqsave(&chip->open_lock, flags);
+	mod_timer(&chip->midi_timer, 1 + jiffies);
+	spin_unlock_irqrestore(&chip->open_lock, flags);	
+	snd_sb8dsp_midi_output_write(substream);
+}
+
+static void snd_sb8dsp_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	unsigned long flags;
+	struct snd_sb *chip;
+
+	chip = substream->rmidi->private_data;
+	spin_lock_irqsave(&chip->open_lock, flags);
+	if (up) {
+		if (!(chip->open & SB_OPEN_MIDI_OUTPUT_TRIGGER)) {
+			mod_timer(&chip->midi_timer, 1 + jiffies);
+			chip->open |= SB_OPEN_MIDI_OUTPUT_TRIGGER;
+		}
+	} else {
+		if (chip->open & SB_OPEN_MIDI_OUTPUT_TRIGGER) {
+			chip->open &= ~SB_OPEN_MIDI_OUTPUT_TRIGGER;
+		}
+	}
+	spin_unlock_irqrestore(&chip->open_lock, flags);
+
+	if (up)
+		snd_sb8dsp_midi_output_write(substream);
+}
+
+static const struct snd_rawmidi_ops snd_sb8dsp_midi_output =
+{
+	.open =		snd_sb8dsp_midi_output_open,
+	.close =	snd_sb8dsp_midi_output_close,
+	.trigger =	snd_sb8dsp_midi_output_trigger,
+};
+
+static const struct snd_rawmidi_ops snd_sb8dsp_midi_input =
+{
+	.open =		snd_sb8dsp_midi_input_open,
+	.close =	snd_sb8dsp_midi_input_close,
+	.trigger =	snd_sb8dsp_midi_input_trigger,
+};
+
+int snd_sb8dsp_midi(struct snd_sb *chip, int device)
+{
+	struct snd_rawmidi *rmidi;
+	int err;
+
+	err = snd_rawmidi_new(chip->card, "SB8 MIDI", device, 1, 1, &rmidi);
+	if (err < 0)
+		return err;
+	strcpy(rmidi->name, "SB8 MIDI");
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_sb8dsp_midi_output);
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_sb8dsp_midi_input);
+	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT;
+	if (chip->hardware >= SB_HW_20)
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+	rmidi->private_data = chip;
+	timer_setup(&chip->midi_timer, snd_sb8dsp_midi_output_timer, 0);
+	chip->rmidi = rmidi;
+	return 0;
+}