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, 250 insertions, 0 deletions

diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
new file mode 100644
index 000000000..2751bf2ff
--- /dev/null
+++ b/sound/core/sound_oss.c
@@ -0,0 +1,250 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Advanced Linux Sound Architecture
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <sound/core.h>
+#include <sound/minors.h>
+#include <sound/info.h>
+#include <linux/sound.h>
+#include <linux/mutex.h>
+
+#define SNDRV_OSS_MINORS 256
+
+static struct snd_minor *snd_oss_minors[SNDRV_OSS_MINORS];
+static DEFINE_MUTEX(sound_oss_mutex);
+
+/* NOTE: This function increments the refcount of the associated card like
+ * snd_lookup_minor_data(); the caller must call snd_card_unref() appropriately
+ */
+void *snd_lookup_oss_minor_data(unsigned int minor, int type)
+{
+	struct snd_minor *mreg;
+	void *private_data;
+
+	if (minor >= ARRAY_SIZE(snd_oss_minors))
+		return NULL;
+	mutex_lock(&sound_oss_mutex);
+	mreg = snd_oss_minors[minor];
+	if (mreg && mreg->type == type) {
+		private_data = mreg->private_data;
+		if (private_data && mreg->card_ptr)
+			get_device(&mreg->card_ptr->card_dev);
+	} else
+		private_data = NULL;
+	mutex_unlock(&sound_oss_mutex);
+	return private_data;
+}
+EXPORT_SYMBOL(snd_lookup_oss_minor_data);
+
+static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
+{
+	int minor;
+
+	switch (type) {
+	case SNDRV_OSS_DEVICE_TYPE_MIXER:
+		if (snd_BUG_ON(!card || dev < 0 || dev > 1))
+			return -EINVAL;
+		minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_MIXER1 : SNDRV_MINOR_OSS_MIXER));
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_SEQUENCER:
+		minor = SNDRV_MINOR_OSS_SEQUENCER;
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_MUSIC:
+		minor = SNDRV_MINOR_OSS_MUSIC;
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_PCM:
+		if (snd_BUG_ON(!card || dev < 0 || dev > 1))
+			return -EINVAL;
+		minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_PCM1 : SNDRV_MINOR_OSS_PCM));
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_MIDI:
+		if (snd_BUG_ON(!card || dev < 0 || dev > 1))
+			return -EINVAL;
+		minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_MIDI1 : SNDRV_MINOR_OSS_MIDI));
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_DMFM:
+		minor = SNDRV_MINOR_OSS(card->number, SNDRV_MINOR_OSS_DMFM);
+		break;
+	case SNDRV_OSS_DEVICE_TYPE_SNDSTAT:
+		minor = SNDRV_MINOR_OSS_SNDSTAT;
+		break;
+	default:
+		return -EINVAL;
+	}
+	if (minor < 0 || minor >= SNDRV_OSS_MINORS)
+		return -EINVAL;
+	return minor;
+}
+
+int snd_register_oss_device(int type, struct snd_card *card, int dev,
+			    const struct file_operations *f_ops, void *private_data)
+{
+	int minor = snd_oss_kernel_minor(type, card, dev);
+	int minor_unit;
+	struct snd_minor *preg;
+	int cidx = SNDRV_MINOR_OSS_CARD(minor);
+	int track2 = -1;
+	int register1 = -1, register2 = -1;
+	struct device *carddev = snd_card_get_device_link(card);
+
+	if (card && card->number >= SNDRV_MINOR_OSS_DEVICES)
+		return 0; /* ignore silently */
+	if (minor < 0)
+		return minor;
+	preg = kmalloc(sizeof(struct snd_minor), GFP_KERNEL);
+	if (preg == NULL)
+		return -ENOMEM;
+	preg->type = type;
+	preg->card = card ? card->number : -1;
+	preg->device = dev;
+	preg->f_ops = f_ops;
+	preg->private_data = private_data;
+	preg->card_ptr = card;
+	mutex_lock(&sound_oss_mutex);
+	snd_oss_minors[minor] = preg;
+	minor_unit = SNDRV_MINOR_OSS_DEVICE(minor);
+	switch (minor_unit) {
+	case SNDRV_MINOR_OSS_PCM:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_AUDIO);
+		break;
+	case SNDRV_MINOR_OSS_MIDI:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI);
+		break;
+	case SNDRV_MINOR_OSS_MIDI1:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
+		break;
+	}
+	register1 = register_sound_special_device(f_ops, minor, carddev);
+	if (register1 != minor)
+		goto __end;
+	if (track2 >= 0) {
+		register2 = register_sound_special_device(f_ops, track2,
+							  carddev);
+		if (register2 != track2)
+			goto __end;
+		snd_oss_minors[track2] = preg;
+	}
+	mutex_unlock(&sound_oss_mutex);
+	return 0;
+
+      __end:
+      	if (register2 >= 0)
+      		unregister_sound_special(register2);
+      	if (register1 >= 0)
+      		unregister_sound_special(register1);
+	snd_oss_minors[minor] = NULL;
+	mutex_unlock(&sound_oss_mutex);
+	kfree(preg);
+      	return -EBUSY;
+}
+EXPORT_SYMBOL(snd_register_oss_device);
+
+int snd_unregister_oss_device(int type, struct snd_card *card, int dev)
+{
+	int minor = snd_oss_kernel_minor(type, card, dev);
+	int cidx = SNDRV_MINOR_OSS_CARD(minor);
+	int track2 = -1;
+	struct snd_minor *mptr;
+
+	if (card && card->number >= SNDRV_MINOR_OSS_DEVICES)
+		return 0;
+	if (minor < 0)
+		return minor;
+	mutex_lock(&sound_oss_mutex);
+	mptr = snd_oss_minors[minor];
+	if (mptr == NULL) {
+		mutex_unlock(&sound_oss_mutex);
+		return -ENOENT;
+	}
+	switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
+	case SNDRV_MINOR_OSS_PCM:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_AUDIO);
+		break;
+	case SNDRV_MINOR_OSS_MIDI:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI);
+		break;
+	case SNDRV_MINOR_OSS_MIDI1:
+		track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
+		break;
+	}
+	if (track2 >= 0)
+		snd_oss_minors[track2] = NULL;
+	snd_oss_minors[minor] = NULL;
+	mutex_unlock(&sound_oss_mutex);
+
+	/* call unregister_sound_special() outside sound_oss_mutex;
+	 * otherwise may deadlock, as it can trigger the release of a card
+	 */
+	unregister_sound_special(minor);
+	if (track2 >= 0)
+		unregister_sound_special(track2);
+
+	kfree(mptr);
+	return 0;
+}
+EXPORT_SYMBOL(snd_unregister_oss_device);
+
+/*
+ *  INFO PART
+ */
+
+#ifdef CONFIG_SND_PROC_FS
+static const char *snd_oss_device_type_name(int type)
+{
+	switch (type) {
+	case SNDRV_OSS_DEVICE_TYPE_MIXER:
+		return "mixer";
+	case SNDRV_OSS_DEVICE_TYPE_SEQUENCER:
+	case SNDRV_OSS_DEVICE_TYPE_MUSIC:
+		return "sequencer";
+	case SNDRV_OSS_DEVICE_TYPE_PCM:
+		return "digital audio";
+	case SNDRV_OSS_DEVICE_TYPE_MIDI:
+		return "raw midi";
+	case SNDRV_OSS_DEVICE_TYPE_DMFM:
+		return "hardware dependent";
+	default:
+		return "?";
+	}
+}
+
+static void snd_minor_info_oss_read(struct snd_info_entry *entry,
+				    struct snd_info_buffer *buffer)
+{
+	int minor;
+	struct snd_minor *mptr;
+
+	mutex_lock(&sound_oss_mutex);
+	for (minor = 0; minor < SNDRV_OSS_MINORS; ++minor) {
+		mptr = snd_oss_minors[minor];
+		if (!mptr)
+			continue;
+		if (mptr->card >= 0)
+			snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", minor,
+				    mptr->card, mptr->device,
+				    snd_oss_device_type_name(mptr->type));
+		else
+			snd_iprintf(buffer, "%3i:       : %s\n", minor,
+				    snd_oss_device_type_name(mptr->type));
+	}
+	mutex_unlock(&sound_oss_mutex);
+}
+
+
+int __init snd_minor_info_oss_init(void)
+{
+	struct snd_info_entry *entry;
+
+	entry = snd_info_create_module_entry(THIS_MODULE, "devices", snd_oss_root);
+	if (!entry)
+		return -ENOMEM;
+	entry->c.text.read = snd_minor_info_oss_read;
+	return snd_info_register(entry); /* freed in error path */
+}
+#endif /* CONFIG_SND_PROC_FS */