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, 518 insertions, 0 deletions

diff --git a/include/sound/core.h b/include/sound/core.h
new file mode 100644
index 000000000..4365c35d0
--- /dev/null
+++ b/include/sound/core.h
@@ -0,0 +1,518 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __SOUND_CORE_H
+#define __SOUND_CORE_H
+
+/*
+ *  Main header file for the ALSA driver
+ *  Copyright (c) 1994-2001 by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <linux/device.h>
+#include <linux/sched.h>		/* wake_up() */
+#include <linux/mutex.h>		/* struct mutex */
+#include <linux/rwsem.h>		/* struct rw_semaphore */
+#include <linux/pm.h>			/* pm_message_t */
+#include <linux/stringify.h>
+#include <linux/printk.h>
+#include <linux/xarray.h>
+
+/* number of supported soundcards */
+#ifdef CONFIG_SND_DYNAMIC_MINORS
+#define SNDRV_CARDS CONFIG_SND_MAX_CARDS
+#else
+#define SNDRV_CARDS 8		/* don't change - minor numbers */
+#endif
+
+#define CONFIG_SND_MAJOR	116	/* standard configuration */
+
+/* forward declarations */
+struct pci_dev;
+struct module;
+struct completion;
+
+/* device allocation stuff */
+
+/* type of the object used in snd_device_*()
+ * this also defines the calling order
+ */
+enum snd_device_type {
+	SNDRV_DEV_LOWLEVEL,
+	SNDRV_DEV_INFO,
+	SNDRV_DEV_BUS,
+	SNDRV_DEV_CODEC,
+	SNDRV_DEV_PCM,
+	SNDRV_DEV_COMPRESS,
+	SNDRV_DEV_RAWMIDI,
+	SNDRV_DEV_TIMER,
+	SNDRV_DEV_SEQUENCER,
+	SNDRV_DEV_HWDEP,
+	SNDRV_DEV_JACK,
+	SNDRV_DEV_CONTROL,	/* NOTE: this must be the last one */
+};
+
+enum snd_device_state {
+	SNDRV_DEV_BUILD,
+	SNDRV_DEV_REGISTERED,
+	SNDRV_DEV_DISCONNECTED,
+};
+
+struct snd_device;
+
+struct snd_device_ops {
+	int (*dev_free)(struct snd_device *dev);
+	int (*dev_register)(struct snd_device *dev);
+	int (*dev_disconnect)(struct snd_device *dev);
+};
+
+struct snd_device {
+	struct list_head list;		/* list of registered devices */
+	struct snd_card *card;		/* card which holds this device */
+	enum snd_device_state state;	/* state of the device */
+	enum snd_device_type type;	/* device type */
+	void *device_data;		/* device structure */
+	const struct snd_device_ops *ops;	/* operations */
+};
+
+#define snd_device(n) list_entry(n, struct snd_device, list)
+
+/* main structure for soundcard */
+
+struct snd_card {
+	int number;			/* number of soundcard (index to
+								snd_cards) */
+
+	char id[16];			/* id string of this card */
+	char driver[16];		/* driver name */
+	char shortname[32];		/* short name of this soundcard */
+	char longname[80];		/* name of this soundcard */
+	char irq_descr[32];		/* Interrupt description */
+	char mixername[80];		/* mixer name */
+	char components[128];		/* card components delimited with
+								space */
+	struct module *module;		/* top-level module */
+
+	void *private_data;		/* private data for soundcard */
+	void (*private_free) (struct snd_card *card); /* callback for freeing of
+								private data */
+	struct list_head devices;	/* devices */
+
+	struct device ctl_dev;		/* control device */
+	unsigned int last_numid;	/* last used numeric ID */
+	struct rw_semaphore controls_rwsem;	/* controls list lock */
+	rwlock_t ctl_files_rwlock;	/* ctl_files list lock */
+	int controls_count;		/* count of all controls */
+	size_t user_ctl_alloc_size;	// current memory allocation by user controls.
+	struct list_head controls;	/* all controls for this card */
+	struct list_head ctl_files;	/* active control files */
+#ifdef CONFIG_SND_CTL_FAST_LOOKUP
+	struct xarray ctl_numids;	/* hash table for numids */
+	struct xarray ctl_hash;		/* hash table for ctl id matching */
+	bool ctl_hash_collision;	/* ctl_hash collision seen? */
+#endif
+
+	struct snd_info_entry *proc_root;	/* root for soundcard specific files */
+	struct proc_dir_entry *proc_root_link;	/* number link to real id */
+
+	struct list_head files_list;	/* all files associated to this card */
+	struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
+								state */
+	spinlock_t files_lock;		/* lock the files for this card */
+	int shutdown;			/* this card is going down */
+	struct completion *release_completion;
+	struct device *dev;		/* device assigned to this card */
+	struct device card_dev;		/* cardX object for sysfs */
+	const struct attribute_group *dev_groups[4]; /* assigned sysfs attr */
+	bool registered;		/* card_dev is registered? */
+	bool managed;			/* managed via devres */
+	bool releasing;			/* during card free process */
+	int sync_irq;			/* assigned irq, used for PCM sync */
+	wait_queue_head_t remove_sleep;
+
+	size_t total_pcm_alloc_bytes;	/* total amount of allocated buffers */
+	struct mutex memory_mutex;	/* protection for the above */
+#ifdef CONFIG_SND_DEBUG
+	struct dentry *debugfs_root;    /* debugfs root for card */
+#endif
+
+#ifdef CONFIG_PM
+	unsigned int power_state;	/* power state */
+	atomic_t power_ref;
+	wait_queue_head_t power_sleep;
+	wait_queue_head_t power_ref_sleep;
+#endif
+
+#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
+	struct snd_mixer_oss *mixer_oss;
+	int mixer_oss_change_count;
+#endif
+};
+
+#define dev_to_snd_card(p)	container_of(p, struct snd_card, card_dev)
+
+#ifdef CONFIG_PM
+static inline unsigned int snd_power_get_state(struct snd_card *card)
+{
+	return READ_ONCE(card->power_state);
+}
+
+static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
+{
+	WRITE_ONCE(card->power_state, state);
+	wake_up(&card->power_sleep);
+}
+
+/**
+ * snd_power_ref - Take the reference count for power control
+ * @card: sound card object
+ *
+ * The power_ref reference of the card is used for managing to block
+ * the snd_power_sync_ref() operation.  This function increments the reference.
+ * The counterpart snd_power_unref() has to be called appropriately later.
+ */
+static inline void snd_power_ref(struct snd_card *card)
+{
+	atomic_inc(&card->power_ref);
+}
+
+/**
+ * snd_power_unref - Release the reference count for power control
+ * @card: sound card object
+ */
+static inline void snd_power_unref(struct snd_card *card)
+{
+	if (atomic_dec_and_test(&card->power_ref))
+		wake_up(&card->power_ref_sleep);
+}
+
+/**
+ * snd_power_sync_ref - wait until the card power_ref is freed
+ * @card: sound card object
+ *
+ * This function is used to synchronize with the pending power_ref being
+ * released.
+ */
+static inline void snd_power_sync_ref(struct snd_card *card)
+{
+	wait_event(card->power_ref_sleep, !atomic_read(&card->power_ref));
+}
+
+/* init.c */
+int snd_power_wait(struct snd_card *card);
+int snd_power_ref_and_wait(struct snd_card *card);
+
+#else /* ! CONFIG_PM */
+
+static inline int snd_power_wait(struct snd_card *card) { return 0; }
+static inline void snd_power_ref(struct snd_card *card) {}
+static inline void snd_power_unref(struct snd_card *card) {}
+static inline int snd_power_ref_and_wait(struct snd_card *card) { return 0; }
+static inline void snd_power_sync_ref(struct snd_card *card) {}
+#define snd_power_get_state(card)	({ (void)(card); SNDRV_CTL_POWER_D0; })
+#define snd_power_change_state(card, state)	do { (void)(card); } while (0)
+
+#endif /* CONFIG_PM */
+
+struct snd_minor {
+	int type;			/* SNDRV_DEVICE_TYPE_XXX */
+	int card;			/* card number */
+	int device;			/* device number */
+	const struct file_operations *f_ops;	/* file operations */
+	void *private_data;		/* private data for f_ops->open */
+	struct device *dev;		/* device for sysfs */
+	struct snd_card *card_ptr;	/* assigned card instance */
+};
+
+/* return a device pointer linked to each sound device as a parent */
+static inline struct device *snd_card_get_device_link(struct snd_card *card)
+{
+	return card ? &card->card_dev : NULL;
+}
+
+/* sound.c */
+
+extern int snd_major;
+extern int snd_ecards_limit;
+extern struct class *sound_class;
+#ifdef CONFIG_SND_DEBUG
+extern struct dentry *sound_debugfs_root;
+#endif
+
+void snd_request_card(int card);
+
+void snd_device_initialize(struct device *dev, struct snd_card *card);
+
+int snd_register_device(int type, struct snd_card *card, int dev,
+			const struct file_operations *f_ops,
+			void *private_data, struct device *device);
+int snd_unregister_device(struct device *dev);
+void *snd_lookup_minor_data(unsigned int minor, int type);
+
+#ifdef CONFIG_SND_OSSEMUL
+int snd_register_oss_device(int type, struct snd_card *card, int dev,
+			    const struct file_operations *f_ops, void *private_data);
+int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
+void *snd_lookup_oss_minor_data(unsigned int minor, int type);
+#endif
+
+int snd_minor_info_init(void);
+
+/* sound_oss.c */
+
+#ifdef CONFIG_SND_OSSEMUL
+int snd_minor_info_oss_init(void);
+#else
+static inline int snd_minor_info_oss_init(void) { return 0; }
+#endif
+
+/* memory.c */
+
+int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
+int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
+
+/* init.c */
+
+int snd_card_locked(int card);
+#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
+#define SND_MIXER_OSS_NOTIFY_REGISTER	0
+#define SND_MIXER_OSS_NOTIFY_DISCONNECT	1
+#define SND_MIXER_OSS_NOTIFY_FREE	2
+extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);
+#endif
+
+int snd_card_new(struct device *parent, int idx, const char *xid,
+		 struct module *module, int extra_size,
+		 struct snd_card **card_ret);
+int snd_devm_card_new(struct device *parent, int idx, const char *xid,
+		      struct module *module, size_t extra_size,
+		      struct snd_card **card_ret);
+
+int snd_card_disconnect(struct snd_card *card);
+void snd_card_disconnect_sync(struct snd_card *card);
+int snd_card_free(struct snd_card *card);
+int snd_card_free_when_closed(struct snd_card *card);
+int snd_card_free_on_error(struct device *dev, int ret);
+void snd_card_set_id(struct snd_card *card, const char *id);
+int snd_card_register(struct snd_card *card);
+int snd_card_info_init(void);
+int snd_card_add_dev_attr(struct snd_card *card,
+			  const struct attribute_group *group);
+int snd_component_add(struct snd_card *card, const char *component);
+int snd_card_file_add(struct snd_card *card, struct file *file);
+int snd_card_file_remove(struct snd_card *card, struct file *file);
+
+struct snd_card *snd_card_ref(int card);
+
+/**
+ * snd_card_unref - Unreference the card object
+ * @card: the card object to unreference
+ *
+ * Call this function for the card object that was obtained via snd_card_ref()
+ * or snd_lookup_minor_data().
+ */
+static inline void snd_card_unref(struct snd_card *card)
+{
+	put_device(&card->card_dev);
+}
+
+#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))
+
+/* device.c */
+
+int snd_device_new(struct snd_card *card, enum snd_device_type type,
+		   void *device_data, const struct snd_device_ops *ops);
+int snd_device_register(struct snd_card *card, void *device_data);
+int snd_device_register_all(struct snd_card *card);
+void snd_device_disconnect(struct snd_card *card, void *device_data);
+void snd_device_disconnect_all(struct snd_card *card);
+void snd_device_free(struct snd_card *card, void *device_data);
+void snd_device_free_all(struct snd_card *card);
+int snd_device_get_state(struct snd_card *card, void *device_data);
+
+/* isadma.c */
+
+#ifdef CONFIG_ISA_DMA_API
+#define DMA_MODE_NO_ENABLE	0x0100
+
+void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
+void snd_dma_disable(unsigned long dma);
+unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
+int snd_devm_request_dma(struct device *dev, int dma, const char *name);
+#endif
+
+/* misc.c */
+struct resource;
+void release_and_free_resource(struct resource *res);
+
+/* --- */
+
+/* sound printk debug levels */
+enum {
+	SND_PR_ALWAYS,
+	SND_PR_DEBUG,
+	SND_PR_VERBOSE,
+};
+
+#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
+__printf(4, 5)
+void __snd_printk(unsigned int level, const char *file, int line,
+		  const char *format, ...);
+#else
+#define __snd_printk(level, file, line, format, ...) \
+	printk(format, ##__VA_ARGS__)
+#endif
+
+/**
+ * snd_printk - printk wrapper
+ * @fmt: format string
+ *
+ * Works like printk() but prints the file and the line of the caller
+ * when configured with CONFIG_SND_VERBOSE_PRINTK.
+ */
+#define snd_printk(fmt, ...) \
+	__snd_printk(0, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
+
+#ifdef CONFIG_SND_DEBUG
+/**
+ * snd_printd - debug printk
+ * @fmt: format string
+ *
+ * Works like snd_printk() for debugging purposes.
+ * Ignored when CONFIG_SND_DEBUG is not set.
+ */
+#define snd_printd(fmt, ...) \
+	__snd_printk(1, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
+#define _snd_printd(level, fmt, ...) \
+	__snd_printk(level, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
+
+/**
+ * snd_BUG - give a BUG warning message and stack trace
+ *
+ * Calls WARN() if CONFIG_SND_DEBUG is set.
+ * Ignored when CONFIG_SND_DEBUG is not set.
+ */
+#define snd_BUG()		WARN(1, "BUG?\n")
+
+/**
+ * snd_printd_ratelimit - Suppress high rates of output when
+ * 			  CONFIG_SND_DEBUG is enabled.
+ */
+#define snd_printd_ratelimit() printk_ratelimit()
+
+/**
+ * snd_BUG_ON - debugging check macro
+ * @cond: condition to evaluate
+ *
+ * Has the same behavior as WARN_ON when CONFIG_SND_DEBUG is set,
+ * otherwise just evaluates the conditional and returns the value.
+ */
+#define snd_BUG_ON(cond)	WARN_ON((cond))
+
+#else /* !CONFIG_SND_DEBUG */
+
+__printf(1, 2)
+static inline void snd_printd(const char *format, ...) {}
+__printf(2, 3)
+static inline void _snd_printd(int level, const char *format, ...) {}
+
+#define snd_BUG()			do { } while (0)
+
+#define snd_BUG_ON(condition) ({ \
+	int __ret_warn_on = !!(condition); \
+	unlikely(__ret_warn_on); \
+})
+
+static inline bool snd_printd_ratelimit(void) { return false; }
+
+#endif /* CONFIG_SND_DEBUG */
+
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+/**
+ * snd_printdd - debug printk
+ * @format: format string
+ *
+ * Works like snd_printk() for debugging purposes.
+ * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
+ */
+#define snd_printdd(format, ...) \
+	__snd_printk(2, __FILE__, __LINE__, format, ##__VA_ARGS__)
+#else
+__printf(1, 2)
+static inline void snd_printdd(const char *format, ...) {}
+#endif
+
+
+#define SNDRV_OSS_VERSION         ((3<<16)|(8<<8)|(1<<4)|(0))	/* 3.8.1a */
+
+/* for easier backward-porting */
+#if IS_ENABLED(CONFIG_GAMEPORT)
+#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
+#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
+#define gameport_get_port_data(gp) (gp)->port_data
+#endif
+
+/* PCI quirk list helper */
+struct snd_pci_quirk {
+	unsigned short subvendor;	/* PCI subvendor ID */
+	unsigned short subdevice;	/* PCI subdevice ID */
+	unsigned short subdevice_mask;	/* bitmask to match */
+	int value;			/* value */
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+	const char *name;		/* name of the device (optional) */
+#endif
+};
+
+#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev)	\
+	.subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
+#define _SND_PCI_QUIRK_ID(vend, dev) \
+	_SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
+#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+#define SND_PCI_QUIRK(vend,dev,xname,val) \
+	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
+#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
+#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev),			\
+			.value = (val), .name = (xname)}
+#define snd_pci_quirk_name(q)	((q)->name)
+#else
+#define SND_PCI_QUIRK(vend,dev,xname,val) \
+	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
+#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
+#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
+#define snd_pci_quirk_name(q)	""
+#endif
+
+#ifdef CONFIG_PCI
+const struct snd_pci_quirk *
+snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);
+
+const struct snd_pci_quirk *
+snd_pci_quirk_lookup_id(u16 vendor, u16 device,
+			const struct snd_pci_quirk *list);
+#else
+static inline const struct snd_pci_quirk *
+snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
+{
+	return NULL;
+}
+
+static inline const struct snd_pci_quirk *
+snd_pci_quirk_lookup_id(u16 vendor, u16 device,
+			const struct snd_pci_quirk *list)
+{
+	return NULL;
+}
+#endif
+
+/* async signal helpers */
+struct snd_fasync;
+
+int snd_fasync_helper(int fd, struct file *file, int on,
+		      struct snd_fasync **fasyncp);
+void snd_kill_fasync(struct snd_fasync *fasync, int signal, int poll);
+void snd_fasync_free(struct snd_fasync *fasync);
+
+#endif /* __SOUND_CORE_H */