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/sound/pci/ca0106/ca_midi.c b/sound/pci/ca0106/ca_midi.c
new file mode 100644
index 000000000..957e60f64
--- /dev/null
+++ b/sound/pci/ca0106/ca_midi.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* 
+ *  Copyright 10/16/2005 Tilman Kranz <tilde@tk-sls.de>
+ *  Creative Audio MIDI, for the CA0106 Driver
+ *  Version: 0.0.1
+ *
+ *  Changelog:
+ *    Implementation is based on mpu401 and emu10k1x and
+ *    tested with ca0106.
+ *    mpu401: Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *    emu10k1x: Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
+ */
+
+#include <linux/spinlock.h>
+#include <sound/core.h>
+#include <sound/rawmidi.h>
+
+#include "ca_midi.h"
+
+#define ca_midi_write_data(midi, data)	midi->write(midi, data, 0)
+#define ca_midi_write_cmd(midi, data)	midi->write(midi, data, 1)
+#define ca_midi_read_data(midi)		midi->read(midi, 0)
+#define ca_midi_read_stat(midi)		midi->read(midi, 1)
+#define ca_midi_input_avail(midi)	(!(ca_midi_read_stat(midi) & midi->input_avail))
+#define ca_midi_output_ready(midi)	(!(ca_midi_read_stat(midi) & midi->output_ready))
+
+static void ca_midi_clear_rx(struct snd_ca_midi *midi)
+{
+	int timeout = 100000;
+	for (; timeout > 0 && ca_midi_input_avail(midi); timeout--)
+		ca_midi_read_data(midi);
+#ifdef CONFIG_SND_DEBUG
+	if (timeout <= 0)
+		pr_err("ca_midi_clear_rx: timeout (status = 0x%x)\n",
+			   ca_midi_read_stat(midi));
+#endif
+}
+
+static void ca_midi_interrupt(struct snd_ca_midi *midi, unsigned int status)
+{
+	unsigned char byte;
+
+	if (midi->rmidi == NULL) {
+		midi->interrupt_disable(midi,midi->tx_enable | midi->rx_enable);
+		return;
+	}
+
+	spin_lock(&midi->input_lock);
+	if ((status & midi->ipr_rx) && ca_midi_input_avail(midi)) {
+		if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
+			ca_midi_clear_rx(midi);
+		} else {
+			byte = ca_midi_read_data(midi);
+			if(midi->substream_input)
+				snd_rawmidi_receive(midi->substream_input, &byte, 1);
+
+
+		}
+	}
+	spin_unlock(&midi->input_lock);
+
+	spin_lock(&midi->output_lock);
+	if ((status & midi->ipr_tx) && ca_midi_output_ready(midi)) {
+		if (midi->substream_output &&
+		    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
+			ca_midi_write_data(midi, byte);
+		} else {
+			midi->interrupt_disable(midi,midi->tx_enable);
+		}
+	}
+	spin_unlock(&midi->output_lock);
+
+}
+
+static void ca_midi_cmd(struct snd_ca_midi *midi, unsigned char cmd, int ack)
+{
+	unsigned long flags;
+	int timeout, ok;
+
+	spin_lock_irqsave(&midi->input_lock, flags);
+	ca_midi_write_data(midi, 0x00);
+	/* ca_midi_clear_rx(midi); */
+
+	ca_midi_write_cmd(midi, cmd);
+	if (ack) {
+		ok = 0;
+		timeout = 10000;
+		while (!ok && timeout-- > 0) {
+			if (ca_midi_input_avail(midi)) {
+				if (ca_midi_read_data(midi) == midi->ack)
+					ok = 1;
+			}
+		}
+		if (!ok && ca_midi_read_data(midi) == midi->ack)
+			ok = 1;
+	} else {
+		ok = 1;
+	}
+	spin_unlock_irqrestore(&midi->input_lock, flags);
+	if (!ok)
+		pr_err("ca_midi_cmd: 0x%x failed at 0x%x (status = 0x%x, data = 0x%x)!!!\n",
+			   cmd,
+			   midi->get_dev_id_port(midi->dev_id),
+			   ca_midi_read_stat(midi),
+			   ca_midi_read_data(midi));
+}
+
+static int ca_midi_input_open(struct snd_rawmidi_substream *substream)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+	unsigned long flags;
+	
+	if (snd_BUG_ON(!midi->dev_id))
+		return -ENXIO;
+	spin_lock_irqsave(&midi->open_lock, flags);
+	midi->midi_mode |= CA_MIDI_MODE_INPUT;
+	midi->substream_input = substream;
+	if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT)) {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+		ca_midi_cmd(midi, midi->reset, 1);
+		ca_midi_cmd(midi, midi->enter_uart, 1);
+	} else {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+	}
+	return 0;
+}
+
+static int ca_midi_output_open(struct snd_rawmidi_substream *substream)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+	unsigned long flags;
+
+	if (snd_BUG_ON(!midi->dev_id))
+		return -ENXIO;
+	spin_lock_irqsave(&midi->open_lock, flags);
+	midi->midi_mode |= CA_MIDI_MODE_OUTPUT;
+	midi->substream_output = substream;
+	if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+		ca_midi_cmd(midi, midi->reset, 1);
+		ca_midi_cmd(midi, midi->enter_uart, 1);
+	} else {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+	}
+	return 0;
+}
+
+static int ca_midi_input_close(struct snd_rawmidi_substream *substream)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+	unsigned long flags;
+
+	if (snd_BUG_ON(!midi->dev_id))
+		return -ENXIO;
+	spin_lock_irqsave(&midi->open_lock, flags);
+	midi->interrupt_disable(midi,midi->rx_enable);
+	midi->midi_mode &= ~CA_MIDI_MODE_INPUT;
+	midi->substream_input = NULL;
+	if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT)) {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+		ca_midi_cmd(midi, midi->reset, 0);
+	} else {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+	}
+	return 0;
+}
+
+static int ca_midi_output_close(struct snd_rawmidi_substream *substream)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+	unsigned long flags;
+
+	if (snd_BUG_ON(!midi->dev_id))
+		return -ENXIO;
+	
+	spin_lock_irqsave(&midi->open_lock, flags);
+
+	midi->interrupt_disable(midi,midi->tx_enable);
+	midi->midi_mode &= ~CA_MIDI_MODE_OUTPUT;
+	midi->substream_output = NULL;
+	
+	if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+		ca_midi_cmd(midi, midi->reset, 0);
+	} else {
+		spin_unlock_irqrestore(&midi->open_lock, flags);
+	}
+	return 0;
+}
+
+static void ca_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+
+	if (snd_BUG_ON(!midi->dev_id))
+		return;
+
+	if (up) {
+		midi->interrupt_enable(midi,midi->rx_enable);
+	} else {
+		midi->interrupt_disable(midi, midi->rx_enable);
+	}
+}
+
+static void ca_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	struct snd_ca_midi *midi = substream->rmidi->private_data;
+	unsigned long flags;
+
+	if (snd_BUG_ON(!midi->dev_id))
+		return;
+
+	if (up) {
+		int max = 4;
+		unsigned char byte;
+
+		spin_lock_irqsave(&midi->output_lock, flags);
+	
+		/* try to send some amount of bytes here before interrupts */
+		while (max > 0) {
+			if (ca_midi_output_ready(midi)) {
+				if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT) ||
+				    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
+					/* no more data */
+					spin_unlock_irqrestore(&midi->output_lock, flags);
+					return;
+				}
+				ca_midi_write_data(midi, byte);
+				max--;
+			} else {
+				break;
+			}
+		}
+
+		spin_unlock_irqrestore(&midi->output_lock, flags);
+		midi->interrupt_enable(midi,midi->tx_enable);
+
+	} else {
+		midi->interrupt_disable(midi,midi->tx_enable);
+	}
+}
+
+static const struct snd_rawmidi_ops ca_midi_output =
+{
+	.open =		ca_midi_output_open,
+	.close =	ca_midi_output_close,
+	.trigger =	ca_midi_output_trigger,
+};
+
+static const struct snd_rawmidi_ops ca_midi_input =
+{
+	.open =		ca_midi_input_open,
+	.close =	ca_midi_input_close,
+	.trigger =	ca_midi_input_trigger,
+};
+
+static void ca_midi_free(struct snd_ca_midi *midi)
+{
+	midi->interrupt = NULL;
+	midi->interrupt_enable = NULL;
+	midi->interrupt_disable = NULL;
+	midi->read = NULL;
+	midi->write = NULL;
+	midi->get_dev_id_card = NULL;
+	midi->get_dev_id_port = NULL;
+	midi->rmidi = NULL;
+}
+
+static void ca_rmidi_free(struct snd_rawmidi *rmidi)
+{
+	ca_midi_free(rmidi->private_data);
+}
+
+int ca_midi_init(void *dev_id, struct snd_ca_midi *midi, int device, char *name)
+{
+	struct snd_rawmidi *rmidi;
+	int err;
+
+	err = snd_rawmidi_new(midi->get_dev_id_card(midi->dev_id), name, device, 1, 1, &rmidi);
+	if (err < 0)
+		return err;
+
+	midi->dev_id = dev_id;
+	midi->interrupt = ca_midi_interrupt;
+
+	spin_lock_init(&midi->open_lock);
+	spin_lock_init(&midi->input_lock);
+	spin_lock_init(&midi->output_lock);
+
+	strcpy(rmidi->name, name);
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &ca_midi_output);
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &ca_midi_input);
+	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
+	                     SNDRV_RAWMIDI_INFO_INPUT |
+	                     SNDRV_RAWMIDI_INFO_DUPLEX;
+	rmidi->private_data = midi;
+	rmidi->private_free = ca_rmidi_free;
+	
+	midi->rmidi = rmidi;
+	return 0;
+}
+