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, 442 insertions, 0 deletions

diff --git a/include/media/media-request.h b/include/media/media-request.h
new file mode 100644
index 000000000..3cd25a271
--- /dev/null
+++ b/include/media/media-request.h
@@ -0,0 +1,442 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Media device request objects
+ *
+ * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
+ * Copyright (C) 2018 Intel Corporation
+ *
+ * Author: Hans Verkuil <hans.verkuil@cisco.com>
+ * Author: Sakari Ailus <sakari.ailus@linux.intel.com>
+ */
+
+#ifndef MEDIA_REQUEST_H
+#define MEDIA_REQUEST_H
+
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/refcount.h>
+
+#include <media/media-device.h>
+
+/**
+ * enum media_request_state - media request state
+ *
+ * @MEDIA_REQUEST_STATE_IDLE:		Idle
+ * @MEDIA_REQUEST_STATE_VALIDATING:	Validating the request, no state changes
+ *					allowed
+ * @MEDIA_REQUEST_STATE_QUEUED:		Queued
+ * @MEDIA_REQUEST_STATE_COMPLETE:	Completed, the request is done
+ * @MEDIA_REQUEST_STATE_CLEANING:	Cleaning, the request is being re-inited
+ * @MEDIA_REQUEST_STATE_UPDATING:	The request is being updated, i.e.
+ *					request objects are being added,
+ *					modified or removed
+ * @NR_OF_MEDIA_REQUEST_STATE:		The number of media request states, used
+ *					internally for sanity check purposes
+ */
+enum media_request_state {
+	MEDIA_REQUEST_STATE_IDLE,
+	MEDIA_REQUEST_STATE_VALIDATING,
+	MEDIA_REQUEST_STATE_QUEUED,
+	MEDIA_REQUEST_STATE_COMPLETE,
+	MEDIA_REQUEST_STATE_CLEANING,
+	MEDIA_REQUEST_STATE_UPDATING,
+	NR_OF_MEDIA_REQUEST_STATE,
+};
+
+struct media_request_object;
+
+/**
+ * struct media_request - Media device request
+ * @mdev: Media device this request belongs to
+ * @kref: Reference count
+ * @debug_str: Prefix for debug messages (process name:fd)
+ * @state: The state of the request
+ * @updating_count: count the number of request updates that are in progress
+ * @access_count: count the number of request accesses that are in progress
+ * @objects: List of @struct media_request_object request objects
+ * @num_incomplete_objects: The number of incomplete objects in the request
+ * @poll_wait: Wait queue for poll
+ * @lock: Serializes access to this struct
+ */
+struct media_request {
+	struct media_device *mdev;
+	struct kref kref;
+	char debug_str[TASK_COMM_LEN + 11];
+	enum media_request_state state;
+	unsigned int updating_count;
+	unsigned int access_count;
+	struct list_head objects;
+	unsigned int num_incomplete_objects;
+	wait_queue_head_t poll_wait;
+	spinlock_t lock;
+};
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+
+/**
+ * media_request_lock_for_access - Lock the request to access its objects
+ *
+ * @req: The media request
+ *
+ * Use before accessing a completed request. A reference to the request must
+ * be held during the access. This usually takes place automatically through
+ * a file handle. Use @media_request_unlock_for_access when done.
+ */
+static inline int __must_check
+media_request_lock_for_access(struct media_request *req)
+{
+	unsigned long flags;
+	int ret = -EBUSY;
+
+	spin_lock_irqsave(&req->lock, flags);
+	if (req->state == MEDIA_REQUEST_STATE_COMPLETE) {
+		req->access_count++;
+		ret = 0;
+	}
+	spin_unlock_irqrestore(&req->lock, flags);
+
+	return ret;
+}
+
+/**
+ * media_request_unlock_for_access - Unlock a request previously locked for
+ *				     access
+ *
+ * @req: The media request
+ *
+ * Unlock a request that has previously been locked using
+ * @media_request_lock_for_access.
+ */
+static inline void media_request_unlock_for_access(struct media_request *req)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&req->lock, flags);
+	if (!WARN_ON(!req->access_count))
+		req->access_count--;
+	spin_unlock_irqrestore(&req->lock, flags);
+}
+
+/**
+ * media_request_lock_for_update - Lock the request for updating its objects
+ *
+ * @req: The media request
+ *
+ * Use before updating a request, i.e. adding, modifying or removing a request
+ * object in it. A reference to the request must be held during the update. This
+ * usually takes place automatically through a file handle. Use
+ * @media_request_unlock_for_update when done.
+ */
+static inline int __must_check
+media_request_lock_for_update(struct media_request *req)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&req->lock, flags);
+	if (req->state == MEDIA_REQUEST_STATE_IDLE ||
+	    req->state == MEDIA_REQUEST_STATE_UPDATING) {
+		req->state = MEDIA_REQUEST_STATE_UPDATING;
+		req->updating_count++;
+	} else {
+		ret = -EBUSY;
+	}
+	spin_unlock_irqrestore(&req->lock, flags);
+
+	return ret;
+}
+
+/**
+ * media_request_unlock_for_update - Unlock a request previously locked for
+ *				     update
+ *
+ * @req: The media request
+ *
+ * Unlock a request that has previously been locked using
+ * @media_request_lock_for_update.
+ */
+static inline void media_request_unlock_for_update(struct media_request *req)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&req->lock, flags);
+	WARN_ON(req->updating_count <= 0);
+	if (!--req->updating_count)
+		req->state = MEDIA_REQUEST_STATE_IDLE;
+	spin_unlock_irqrestore(&req->lock, flags);
+}
+
+/**
+ * media_request_get - Get the media request
+ *
+ * @req: The media request
+ *
+ * Get the media request.
+ */
+static inline void media_request_get(struct media_request *req)
+{
+	kref_get(&req->kref);
+}
+
+/**
+ * media_request_put - Put the media request
+ *
+ * @req: The media request
+ *
+ * Put the media request. The media request will be released
+ * when the refcount reaches 0.
+ */
+void media_request_put(struct media_request *req);
+
+/**
+ * media_request_get_by_fd - Get a media request by fd
+ *
+ * @mdev: Media device this request belongs to
+ * @request_fd: The file descriptor of the request
+ *
+ * Get the request represented by @request_fd that is owned
+ * by the media device.
+ *
+ * Return a -EBADR error pointer if requests are not supported
+ * by this driver. Return -EINVAL if the request was not found.
+ * Return the pointer to the request if found: the caller will
+ * have to call @media_request_put when it finished using the
+ * request.
+ */
+struct media_request *
+media_request_get_by_fd(struct media_device *mdev, int request_fd);
+
+/**
+ * media_request_alloc - Allocate the media request
+ *
+ * @mdev: Media device this request belongs to
+ * @alloc_fd: Store the request's file descriptor in this int
+ *
+ * Allocated the media request and put the fd in @alloc_fd.
+ */
+int media_request_alloc(struct media_device *mdev,
+			int *alloc_fd);
+
+#else
+
+static inline void media_request_get(struct media_request *req)
+{
+}
+
+static inline void media_request_put(struct media_request *req)
+{
+}
+
+static inline struct media_request *
+media_request_get_by_fd(struct media_device *mdev, int request_fd)
+{
+	return ERR_PTR(-EBADR);
+}
+
+#endif
+
+/**
+ * struct media_request_object_ops - Media request object operations
+ * @prepare: Validate and prepare the request object, optional.
+ * @unprepare: Unprepare the request object, optional.
+ * @queue: Queue the request object, optional.
+ * @unbind: Unbind the request object, optional.
+ * @release: Release the request object, required.
+ */
+struct media_request_object_ops {
+	int (*prepare)(struct media_request_object *object);
+	void (*unprepare)(struct media_request_object *object);
+	void (*queue)(struct media_request_object *object);
+	void (*unbind)(struct media_request_object *object);
+	void (*release)(struct media_request_object *object);
+};
+
+/**
+ * struct media_request_object - An opaque object that belongs to a media
+ *				 request
+ *
+ * @ops: object's operations
+ * @priv: object's priv pointer
+ * @req: the request this object belongs to (can be NULL)
+ * @list: List entry of the object for @struct media_request
+ * @kref: Reference count of the object, acquire before releasing req->lock
+ * @completed: If true, then this object was completed.
+ *
+ * An object related to the request. This struct is always embedded in
+ * another struct that contains the actual data for this request object.
+ */
+struct media_request_object {
+	const struct media_request_object_ops *ops;
+	void *priv;
+	struct media_request *req;
+	struct list_head list;
+	struct kref kref;
+	bool completed;
+};
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+
+/**
+ * media_request_object_get - Get a media request object
+ *
+ * @obj: The object
+ *
+ * Get a media request object.
+ */
+static inline void media_request_object_get(struct media_request_object *obj)
+{
+	kref_get(&obj->kref);
+}
+
+/**
+ * media_request_object_put - Put a media request object
+ *
+ * @obj: The object
+ *
+ * Put a media request object. Once all references are gone, the
+ * object's memory is released.
+ */
+void media_request_object_put(struct media_request_object *obj);
+
+/**
+ * media_request_object_find - Find an object in a request
+ *
+ * @req: The media request
+ * @ops: Find an object with this ops value
+ * @priv: Find an object with this priv value
+ *
+ * Both @ops and @priv must be non-NULL.
+ *
+ * Returns the object pointer or NULL if not found. The caller must
+ * call media_request_object_put() once it finished using the object.
+ *
+ * Since this function needs to walk the list of objects it takes
+ * the @req->lock spin lock to make this safe.
+ */
+struct media_request_object *
+media_request_object_find(struct media_request *req,
+			  const struct media_request_object_ops *ops,
+			  void *priv);
+
+/**
+ * media_request_object_init - Initialise a media request object
+ *
+ * @obj: The object
+ *
+ * Initialise a media request object. The object will be released using the
+ * release callback of the ops once it has no references (this function
+ * initialises references to one).
+ */
+void media_request_object_init(struct media_request_object *obj);
+
+/**
+ * media_request_object_bind - Bind a media request object to a request
+ *
+ * @req: The media request
+ * @ops: The object ops for this object
+ * @priv: A driver-specific priv pointer associated with this object
+ * @is_buffer: Set to true if the object a buffer object.
+ * @obj: The object
+ *
+ * Bind this object to the request and set the ops and priv values of
+ * the object so it can be found later with media_request_object_find().
+ *
+ * Every bound object must be unbound or completed by the kernel at some
+ * point in time, otherwise the request will never complete. When the
+ * request is released all completed objects will be unbound by the
+ * request core code.
+ *
+ * Buffer objects will be added to the end of the request's object
+ * list, non-buffer objects will be added to the front of the list.
+ * This ensures that all buffer objects are at the end of the list
+ * and that all non-buffer objects that they depend on are processed
+ * first.
+ */
+int media_request_object_bind(struct media_request *req,
+			      const struct media_request_object_ops *ops,
+			      void *priv, bool is_buffer,
+			      struct media_request_object *obj);
+
+/**
+ * media_request_object_unbind - Unbind a media request object
+ *
+ * @obj: The object
+ *
+ * Unbind the media request object from the request.
+ */
+void media_request_object_unbind(struct media_request_object *obj);
+
+/**
+ * media_request_object_complete - Mark the media request object as complete
+ *
+ * @obj: The object
+ *
+ * Mark the media request object as complete. Only bound objects can
+ * be completed.
+ */
+void media_request_object_complete(struct media_request_object *obj);
+
+#else
+
+static inline int __must_check
+media_request_lock_for_access(struct media_request *req)
+{
+	return -EINVAL;
+}
+
+static inline void media_request_unlock_for_access(struct media_request *req)
+{
+}
+
+static inline int __must_check
+media_request_lock_for_update(struct media_request *req)
+{
+	return -EINVAL;
+}
+
+static inline void media_request_unlock_for_update(struct media_request *req)
+{
+}
+
+static inline void media_request_object_get(struct media_request_object *obj)
+{
+}
+
+static inline void media_request_object_put(struct media_request_object *obj)
+{
+}
+
+static inline struct media_request_object *
+media_request_object_find(struct media_request *req,
+			  const struct media_request_object_ops *ops,
+			  void *priv)
+{
+	return NULL;
+}
+
+static inline void media_request_object_init(struct media_request_object *obj)
+{
+	obj->ops = NULL;
+	obj->req = NULL;
+}
+
+static inline int media_request_object_bind(struct media_request *req,
+			       const struct media_request_object_ops *ops,
+			       void *priv, bool is_buffer,
+			       struct media_request_object *obj)
+{
+	return 0;
+}
+
+static inline void media_request_object_unbind(struct media_request_object *obj)
+{
+}
+
+static inline void media_request_object_complete(struct media_request_object *obj)
+{
+}
+
+#endif
+
+#endif