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, 179 insertions, 0 deletions

diff --git a/drivers/staging/nvec/nvec.h b/drivers/staging/nvec/nvec.h
new file mode 100644
index 000000000..80c0353f1
--- /dev/null
+++ b/drivers/staging/nvec/nvec.h
@@ -0,0 +1,179 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * NVEC: NVIDIA compliant embedded controller interface
+ *
+ * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.launchpad.net>
+ *
+ * Authors:  Pierre-Hugues Husson <phhusson@free.fr>
+ *           Ilya Petrov <ilya.muromec@gmail.com>
+ *           Marc Dietrich <marvin24@gmx.de>
+ *           Julian Andres Klode <jak@jak-linux.org>
+ */
+
+#ifndef __LINUX_MFD_NVEC
+#define __LINUX_MFD_NVEC
+
+#include <linux/atomic.h>
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/reset.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+
+/* NVEC_POOL_SIZE - Size of the pool in &struct nvec_msg */
+#define NVEC_POOL_SIZE	64
+
+/*
+ * NVEC_MSG_SIZE - Maximum size of the data field of &struct nvec_msg.
+ *
+ * A message must store up to a SMBus block operation which consists of
+ * one command byte, one count byte, and up to 32 payload bytes = 34
+ * byte.
+ */
+#define NVEC_MSG_SIZE	34
+
+/**
+ * enum nvec_event_size - The size of an event message
+ * @NVEC_2BYTES: The message has one command byte and one data byte
+ * @NVEC_3BYTES: The message has one command byte and two data bytes
+ * @NVEC_VAR_SIZE: The message has one command byte, one count byte, and has
+ *                 up to as many bytes as the number in the count byte. The
+ *                 maximum is 32
+ *
+ * Events can be fixed or variable sized. This is useless on other message
+ * types, which are always variable sized.
+ */
+enum nvec_event_size {
+	NVEC_2BYTES,
+	NVEC_3BYTES,
+	NVEC_VAR_SIZE,
+};
+
+/**
+ * enum nvec_msg_type - The type of a message
+ * @NVEC_SYS: A system request/response
+ * @NVEC_BAT: A battery request/response
+ * @NVEC_KBD: A keyboard request/response
+ * @NVEC_PS2: A mouse request/response
+ * @NVEC_CNTL: A EC control request/response
+ * @NVEC_KB_EVT: An event from the keyboard
+ * @NVEC_PS2_EVT: An event from the mouse
+ *
+ * Events can be fixed or variable sized. This is useless on other message
+ * types, which are always variable sized.
+ */
+enum nvec_msg_type {
+	NVEC_SYS = 1,
+	NVEC_BAT,
+	NVEC_GPIO,
+	NVEC_SLEEP,
+	NVEC_KBD,
+	NVEC_PS2,
+	NVEC_CNTL,
+	NVEC_OEM0 = 0x0d,
+	NVEC_KB_EVT = 0x80,
+	NVEC_PS2_EVT,
+};
+
+/**
+ * struct nvec_msg - A buffer for a single message
+ * @node: Messages are part of various lists in a &struct nvec_chip
+ * @data: The data of the message
+ * @size: For TX messages, the number of bytes used in @data
+ * @pos:  For RX messages, the current position to write to. For TX messages,
+ *        the position to read from.
+ * @used: Used for the message pool to mark a message as free/allocated.
+ *
+ * This structure is used to hold outgoing and incoming messages. Outgoing
+ * messages have a different format than incoming messages, and that is not
+ * documented yet.
+ */
+struct nvec_msg {
+	struct list_head node;
+	unsigned char data[NVEC_MSG_SIZE];
+	unsigned short size;
+	unsigned short pos;
+	atomic_t used;
+};
+
+/**
+ * struct nvec_chip - A single connection to an NVIDIA Embedded controller
+ * @dev: The device
+ * @gpio: The same as for &struct nvec_platform_data
+ * @irq: The IRQ of the I2C device
+ * @i2c_addr: The address of the I2C slave
+ * @base: The base of the memory mapped region of the I2C device
+ * @i2c_clk: The clock of the I2C device
+ * @rst: The reset of the I2C device
+ * @notifier_list: Notifiers to be called on received messages, see
+ *                 nvec_register_notifier()
+ * @rx_data: Received messages that have to be processed
+ * @tx_data: Messages waiting to be sent to the controller
+ * @nvec_status_notifier: Internal notifier (see nvec_status_notifier())
+ * @rx_work: A work structure for the RX worker nvec_dispatch()
+ * @tx_work: A work structure for the TX worker nvec_request_master()
+ * @wq: The work queue in which @rx_work and @tx_work are executed
+ * @rx: The message currently being retrieved or %NULL
+ * @msg_pool: A pool of messages for allocation
+ * @tx: The message currently being transferred
+ * @tx_scratch: Used for building pseudo messages
+ * @ec_transfer: A completion that will be completed once a message has been
+ *               received (see nvec_rx_completed())
+ * @tx_lock: Spinlock for modifications on @tx_data
+ * @rx_lock: Spinlock for modifications on @rx_data
+ * @sync_write_mutex: A mutex for nvec_write_sync()
+ * @sync_write: A completion to signal that a synchronous message is complete
+ * @sync_write_pending: The first two bytes of the request (type and subtype)
+ * @last_sync_msg: The last synchronous message.
+ * @state: State of our finite state machine used in nvec_interrupt()
+ */
+struct nvec_chip {
+	struct device *dev;
+	struct gpio_desc *gpiod;
+	int irq;
+	u32 i2c_addr;
+	void __iomem *base;
+	struct clk *i2c_clk;
+	struct reset_control *rst;
+	struct atomic_notifier_head notifier_list;
+	struct list_head rx_data, tx_data;
+	struct notifier_block nvec_status_notifier;
+	struct work_struct rx_work, tx_work;
+	struct workqueue_struct *wq;
+	struct nvec_msg msg_pool[NVEC_POOL_SIZE];
+	struct nvec_msg *rx;
+
+	struct nvec_msg *tx;
+	struct nvec_msg tx_scratch;
+	struct completion ec_transfer;
+
+	spinlock_t tx_lock, rx_lock;
+
+	/* sync write stuff */
+	struct mutex sync_write_mutex;
+	struct completion sync_write;
+	u16 sync_write_pending;
+	struct nvec_msg *last_sync_msg;
+
+	int state;
+};
+
+int nvec_write_async(struct nvec_chip *nvec, const unsigned char *data,
+		     short size);
+
+int nvec_write_sync(struct nvec_chip *nvec,
+		    const unsigned char *data, short size,
+		    struct nvec_msg **msg);
+
+int nvec_register_notifier(struct nvec_chip *nvec,
+			   struct notifier_block *nb,
+			   unsigned int events);
+
+int nvec_unregister_notifier(struct nvec_chip *dev, struct notifier_block *nb);
+
+void nvec_msg_free(struct nvec_chip *nvec, struct nvec_msg *msg);
+
+#endif