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, 355 insertions, 0 deletions

diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h
new file mode 100644
index 000000000..1f957c946
--- /dev/null
+++ b/sound/firewire/amdtp-stream.h
@@ -0,0 +1,355 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED
+#define SOUND_FIREWIRE_AMDTP_H_INCLUDED
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <sound/asound.h>
+#include "packets-buffer.h"
+
+/**
+ * enum cip_flags - describes details of the streaming protocol
+ * @CIP_NONBLOCKING: In non-blocking mode, each packet contains
+ *	sample_rate/8000 samples, with rounding up or down to adjust
+ *	for clock skew and left-over fractional samples.  This should
+ *	be used if supported by the device.
+ * @CIP_BLOCKING: In blocking mode, each packet contains either zero or
+ *	SYT_INTERVAL samples, with these two types alternating so that
+ *	the overall sample rate comes out right.
+ * @CIP_EMPTY_WITH_TAG0: Only for in-stream. Empty in-packets have TAG0.
+ * @CIP_DBC_IS_END_EVENT: The value of dbc in an packet corresponds to the end
+ * of event in the packet. Out of IEC 61883.
+ * @CIP_WRONG_DBS: Only for in-stream. The value of dbs is wrong in in-packets.
+ *	The value of data_block_quadlets is used instead of reported value.
+ * @CIP_SKIP_DBC_ZERO_CHECK: Only for in-stream.  Packets with zero in dbc is
+ *	skipped for detecting discontinuity.
+ * @CIP_EMPTY_HAS_WRONG_DBC: Only for in-stream. The value of dbc in empty
+ *	packet is wrong but the others are correct.
+ * @CIP_JUMBO_PAYLOAD: Only for in-stream. The number of data blocks in an
+ *	packet is larger than IEC 61883-6 defines. Current implementation
+ *	allows 5 times as large as IEC 61883-6 defines.
+ * @CIP_HEADER_WITHOUT_EOH: Only for in-stream. CIP Header doesn't include
+ *	valid EOH.
+ * @CIP_NO_HEADERS: a lack of headers in packets
+ * @CIP_UNALIGHED_DBC: Only for in-stream. The value of dbc is not alighed to
+ *	the value of current SYT_INTERVAL; e.g. initial value is not zero.
+ * @CIP_UNAWARE_SYT: For outgoing packet, the value in SYT field of CIP is 0xffff.
+ *	For incoming packet, the value in SYT field of CIP is not handled.
+ */
+enum cip_flags {
+	CIP_NONBLOCKING		= 0x00,
+	CIP_BLOCKING		= 0x01,
+	CIP_EMPTY_WITH_TAG0	= 0x02,
+	CIP_DBC_IS_END_EVENT	= 0x04,
+	CIP_WRONG_DBS		= 0x08,
+	CIP_SKIP_DBC_ZERO_CHECK	= 0x10,
+	CIP_EMPTY_HAS_WRONG_DBC	= 0x20,
+	CIP_JUMBO_PAYLOAD	= 0x40,
+	CIP_HEADER_WITHOUT_EOH	= 0x80,
+	CIP_NO_HEADER		= 0x100,
+	CIP_UNALIGHED_DBC	= 0x200,
+	CIP_UNAWARE_SYT		= 0x400,
+};
+
+/**
+ * enum cip_sfc - supported Sampling Frequency Codes (SFCs)
+ * @CIP_SFC_32000:   32,000 data blocks
+ * @CIP_SFC_44100:   44,100 data blocks
+ * @CIP_SFC_48000:   48,000 data blocks
+ * @CIP_SFC_88200:   88,200 data blocks
+ * @CIP_SFC_96000:   96,000 data blocks
+ * @CIP_SFC_176400: 176,400 data blocks
+ * @CIP_SFC_192000: 192,000 data blocks
+ * @CIP_SFC_COUNT: the number of supported SFCs
+ *
+ * These values are used to show nominal Sampling Frequency Code in
+ * Format Dependent Field (FDF) of AMDTP packet header. In IEC 61883-6:2002,
+ * this code means the number of events per second. Actually the code
+ * represents the number of data blocks transferred per second in an AMDTP
+ * stream.
+ *
+ * In IEC 61883-6:2005, some extensions were added to support more types of
+ * data such as 'One Bit LInear Audio', therefore the meaning of SFC became
+ * different depending on the types.
+ *
+ * Currently our implementation is compatible with IEC 61883-6:2002.
+ */
+enum cip_sfc {
+	CIP_SFC_32000  = 0,
+	CIP_SFC_44100  = 1,
+	CIP_SFC_48000  = 2,
+	CIP_SFC_88200  = 3,
+	CIP_SFC_96000  = 4,
+	CIP_SFC_176400 = 5,
+	CIP_SFC_192000 = 6,
+	CIP_SFC_COUNT
+};
+
+struct fw_unit;
+struct fw_iso_context;
+struct snd_pcm_substream;
+struct snd_pcm_runtime;
+
+enum amdtp_stream_direction {
+	AMDTP_OUT_STREAM = 0,
+	AMDTP_IN_STREAM
+};
+
+struct pkt_desc {
+	u32 cycle;
+	u32 syt;
+	unsigned int data_blocks;
+	unsigned int data_block_counter;
+	__be32 *ctx_payload;
+};
+
+struct amdtp_stream;
+typedef unsigned int (*amdtp_stream_process_ctx_payloads_t)(
+						struct amdtp_stream *s,
+						const struct pkt_desc *desc,
+						unsigned int packets,
+						struct snd_pcm_substream *pcm);
+
+struct amdtp_domain;
+struct amdtp_stream {
+	struct fw_unit *unit;
+	// The combination of cip_flags enumeration-constants.
+	unsigned int flags;
+	enum amdtp_stream_direction direction;
+	struct mutex mutex;
+
+	/* For packet processing. */
+	struct fw_iso_context *context;
+	struct iso_packets_buffer buffer;
+	unsigned int queue_size;
+	int packet_index;
+	struct pkt_desc *pkt_descs;
+	int tag;
+	union {
+		struct {
+			unsigned int ctx_header_size;
+
+			// limit for payload of iso packet.
+			unsigned int max_ctx_payload_length;
+
+			// For quirks of CIP headers.
+			// Fixed interval of dbc between previos/current
+			// packets.
+			unsigned int dbc_interval;
+
+			// The device starts multiplexing events to the packet.
+			bool event_starts;
+
+			struct {
+				struct seq_desc *descs;
+				unsigned int size;
+				unsigned int tail;
+			} cache;
+		} tx;
+		struct {
+			// To generate CIP header.
+			unsigned int fdf;
+
+			// To generate constant hardware IRQ.
+			unsigned int event_count;
+
+			// To calculate CIP data blocks and tstamp.
+			struct {
+				struct seq_desc *descs;
+				unsigned int size;
+				unsigned int tail;
+				unsigned int head;
+			} seq;
+
+			unsigned int data_block_state;
+			unsigned int syt_offset_state;
+			unsigned int last_syt_offset;
+
+			struct amdtp_stream *replay_target;
+			unsigned int cache_head;
+		} rx;
+	} ctx_data;
+
+	/* For CIP headers. */
+	unsigned int source_node_id_field;
+	unsigned int data_block_quadlets;
+	unsigned int data_block_counter;
+	unsigned int sph;
+	unsigned int fmt;
+
+	// Internal flags.
+	unsigned int transfer_delay;
+	enum cip_sfc sfc;
+	unsigned int syt_interval;
+
+	/* For a PCM substream processing. */
+	struct snd_pcm_substream *pcm;
+	snd_pcm_uframes_t pcm_buffer_pointer;
+	unsigned int pcm_period_pointer;
+
+	// To start processing content of packets at the same cycle in several contexts for
+	// each direction.
+	bool ready_processing;
+	wait_queue_head_t ready_wait;
+	unsigned int next_cycle;
+
+	/* For backends to process data blocks. */
+	void *protocol;
+	amdtp_stream_process_ctx_payloads_t process_ctx_payloads;
+
+	// For domain.
+	int channel;
+	int speed;
+	struct list_head list;
+	struct amdtp_domain *domain;
+};
+
+int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
+		      enum amdtp_stream_direction dir, unsigned int flags,
+		      unsigned int fmt,
+		      amdtp_stream_process_ctx_payloads_t process_ctx_payloads,
+		      unsigned int protocol_size);
+void amdtp_stream_destroy(struct amdtp_stream *s);
+
+int amdtp_stream_set_parameters(struct amdtp_stream *s, unsigned int rate,
+				unsigned int data_block_quadlets);
+unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s);
+
+void amdtp_stream_update(struct amdtp_stream *s);
+
+int amdtp_stream_add_pcm_hw_constraints(struct amdtp_stream *s,
+					struct snd_pcm_runtime *runtime);
+
+void amdtp_stream_pcm_prepare(struct amdtp_stream *s);
+void amdtp_stream_pcm_abort(struct amdtp_stream *s);
+
+extern const unsigned int amdtp_syt_intervals[CIP_SFC_COUNT];
+extern const unsigned int amdtp_rate_table[CIP_SFC_COUNT];
+
+/**
+ * amdtp_stream_running - check stream is running or not
+ * @s: the AMDTP stream
+ *
+ * If this function returns true, the stream is running.
+ */
+static inline bool amdtp_stream_running(struct amdtp_stream *s)
+{
+	return !IS_ERR(s->context);
+}
+
+/**
+ * amdtp_streaming_error - check for streaming error
+ * @s: the AMDTP stream
+ *
+ * If this function returns true, the stream's packet queue has stopped due to
+ * an asynchronous error.
+ */
+static inline bool amdtp_streaming_error(struct amdtp_stream *s)
+{
+	return s->packet_index < 0;
+}
+
+/**
+ * amdtp_stream_pcm_running - check PCM substream is running or not
+ * @s: the AMDTP stream
+ *
+ * If this function returns true, PCM substream in the AMDTP stream is running.
+ */
+static inline bool amdtp_stream_pcm_running(struct amdtp_stream *s)
+{
+	return !!s->pcm;
+}
+
+/**
+ * amdtp_stream_pcm_trigger - start/stop playback from a PCM device
+ * @s: the AMDTP stream
+ * @pcm: the PCM device to be started, or %NULL to stop the current device
+ *
+ * Call this function on a running isochronous stream to enable the actual
+ * transmission of PCM data.  This function should be called from the PCM
+ * device's .trigger callback.
+ */
+static inline void amdtp_stream_pcm_trigger(struct amdtp_stream *s,
+					    struct snd_pcm_substream *pcm)
+{
+	WRITE_ONCE(s->pcm, pcm);
+}
+
+static inline bool cip_sfc_is_base_44100(enum cip_sfc sfc)
+{
+	return sfc & 1;
+}
+
+struct seq_desc {
+	unsigned int syt_offset;
+	unsigned int data_blocks;
+};
+
+struct amdtp_domain {
+	struct list_head streams;
+
+	unsigned int events_per_period;
+	unsigned int events_per_buffer;
+
+	struct amdtp_stream *irq_target;
+
+	struct {
+		unsigned int tx_init_skip;
+		unsigned int tx_start;
+		unsigned int rx_start;
+	} processing_cycle;
+
+	struct {
+		bool enable:1;
+		bool on_the_fly:1;
+	} replay;
+};
+
+int amdtp_domain_init(struct amdtp_domain *d);
+void amdtp_domain_destroy(struct amdtp_domain *d);
+
+int amdtp_domain_add_stream(struct amdtp_domain *d, struct amdtp_stream *s,
+			    int channel, int speed);
+
+int amdtp_domain_start(struct amdtp_domain *d, unsigned int tx_init_skip_cycles, bool replay_seq,
+		       bool replay_on_the_fly);
+void amdtp_domain_stop(struct amdtp_domain *d);
+
+static inline int amdtp_domain_set_events_per_period(struct amdtp_domain *d,
+						unsigned int events_per_period,
+						unsigned int events_per_buffer)
+{
+	d->events_per_period = events_per_period;
+	d->events_per_buffer = events_per_buffer;
+
+	return 0;
+}
+
+unsigned long amdtp_domain_stream_pcm_pointer(struct amdtp_domain *d,
+					      struct amdtp_stream *s);
+int amdtp_domain_stream_pcm_ack(struct amdtp_domain *d, struct amdtp_stream *s);
+
+/**
+ * amdtp_domain_wait_ready - sleep till being ready to process packets or timeout
+ * @d: the AMDTP domain
+ * @timeout_ms: msec till timeout
+ *
+ * If this function return false, the AMDTP domain should be stopped.
+ */
+static inline bool amdtp_domain_wait_ready(struct amdtp_domain *d, unsigned int timeout_ms)
+{
+	struct amdtp_stream *s;
+
+	list_for_each_entry(s, &d->streams, list) {
+		unsigned int j = msecs_to_jiffies(timeout_ms);
+
+		if (wait_event_interruptible_timeout(s->ready_wait, s->ready_processing, j) <= 0)
+			return false;
+	}
+
+	return true;
+}
+
+#endif