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, 215 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h
new file mode 100644
index 000000000..af5f9b210
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h
@@ -0,0 +1,215 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2005-2014, 2018-2021 Intel Corporation
+ * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2015 Intel Deutschland GmbH
+ */
+#ifndef __iwl_op_mode_h__
+#define __iwl_op_mode_h__
+
+#include <linux/netdevice.h>
+#include <linux/debugfs.h>
+#include "iwl-dbg-tlv.h"
+
+struct iwl_op_mode;
+struct iwl_trans;
+struct sk_buff;
+struct iwl_device_cmd;
+struct iwl_rx_cmd_buffer;
+struct iwl_fw;
+struct iwl_cfg;
+
+/**
+ * DOC: Operational mode - what is it ?
+ *
+ * The operational mode (a.k.a. op_mode) is the layer that implements
+ * mac80211's handlers. It knows two APIs: mac80211's and the fw's. It uses
+ * the transport API to access the HW. The op_mode doesn't need to know how the
+ * underlying HW works, since the transport layer takes care of that.
+ *
+ * There can be several op_mode: i.e. different fw APIs will require two
+ * different op_modes. This is why the op_mode is virtualized.
+ */
+
+/**
+ * DOC: Life cycle of the Operational mode
+ *
+ * The operational mode has a very simple life cycle.
+ *
+ *	1) The driver layer (iwl-drv.c) chooses the op_mode based on the
+ *	   capabilities advertised by the fw file (in TLV format).
+ *	2) The driver layer starts the op_mode (ops->start)
+ *	3) The op_mode registers mac80211
+ *	4) The op_mode is governed by mac80211
+ *	5) The driver layer stops the op_mode
+ */
+
+/**
+ * struct iwl_op_mode_ops - op_mode specific operations
+ *
+ * The op_mode exports its ops so that external components can start it and
+ * interact with it. The driver layer typically calls the start and stop
+ * handlers, the transport layer calls the others.
+ *
+ * All the handlers MUST be implemented, except @rx_rss which can be left
+ * out *iff* the opmode will never run on hardware with multi-queue capability.
+ *
+ * @start: start the op_mode. The transport layer is already allocated.
+ *	May sleep
+ * @stop: stop the op_mode. Must free all the memory allocated.
+ *	May sleep
+ * @rx: Rx notification to the op_mode. rxb is the Rx buffer itself. Cmd is the
+ *	HCMD this Rx responds to. Can't sleep.
+ * @rx_rss: data queue RX notification to the op_mode, for (data) notifications
+ *	received on the RSS queue(s). The queue parameter indicates which of the
+ *	RSS queues received this frame; it will always be non-zero.
+ *	This method must not sleep.
+ * @async_cb: called when an ASYNC command with CMD_WANT_ASYNC_CALLBACK set
+ *	completes. Must be atomic.
+ * @queue_full: notifies that a HW queue is full.
+ *	Must be atomic and called with BH disabled.
+ * @queue_not_full: notifies that a HW queue is not full any more.
+ *	Must be atomic and called with BH disabled.
+ * @hw_rf_kill:notifies of a change in the HW rf kill switch. True means that
+ *	the radio is killed. Return %true if the device should be stopped by
+ *	the transport immediately after the call. May sleep.
+ * @free_skb: allows the transport layer to free skbs that haven't been
+ *	reclaimed by the op_mode. This can happen when the driver is freed and
+ *	there are Tx packets pending in the transport layer.
+ *	Must be atomic
+ * @nic_error: error notification. Must be atomic and must be called with BH
+ *	disabled, unless the sync parameter is true.
+ * @cmd_queue_full: Called when the command queue gets full. Must be atomic and
+ *	called with BH disabled.
+ * @nic_config: configure NIC, called before firmware is started.
+ *	May sleep
+ * @wimax_active: invoked when WiMax becomes active. May sleep
+ * @time_point: called when transport layer wants to collect debug data
+ */
+struct iwl_op_mode_ops {
+	struct iwl_op_mode *(*start)(struct iwl_trans *trans,
+				     const struct iwl_cfg *cfg,
+				     const struct iwl_fw *fw,
+				     struct dentry *dbgfs_dir);
+	void (*stop)(struct iwl_op_mode *op_mode);
+	void (*rx)(struct iwl_op_mode *op_mode, struct napi_struct *napi,
+		   struct iwl_rx_cmd_buffer *rxb);
+	void (*rx_rss)(struct iwl_op_mode *op_mode, struct napi_struct *napi,
+		       struct iwl_rx_cmd_buffer *rxb, unsigned int queue);
+	void (*async_cb)(struct iwl_op_mode *op_mode,
+			 const struct iwl_device_cmd *cmd);
+	void (*queue_full)(struct iwl_op_mode *op_mode, int queue);
+	void (*queue_not_full)(struct iwl_op_mode *op_mode, int queue);
+	bool (*hw_rf_kill)(struct iwl_op_mode *op_mode, bool state);
+	void (*free_skb)(struct iwl_op_mode *op_mode, struct sk_buff *skb);
+	void (*nic_error)(struct iwl_op_mode *op_mode, bool sync);
+	void (*cmd_queue_full)(struct iwl_op_mode *op_mode);
+	void (*nic_config)(struct iwl_op_mode *op_mode);
+	void (*wimax_active)(struct iwl_op_mode *op_mode);
+	void (*time_point)(struct iwl_op_mode *op_mode,
+			   enum iwl_fw_ini_time_point tp_id,
+			   union iwl_dbg_tlv_tp_data *tp_data);
+};
+
+int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops);
+void iwl_opmode_deregister(const char *name);
+
+/**
+ * struct iwl_op_mode - operational mode
+ * @ops: pointer to its own ops
+ *
+ * This holds an implementation of the mac80211 / fw API.
+ */
+struct iwl_op_mode {
+	const struct iwl_op_mode_ops *ops;
+
+	char op_mode_specific[] __aligned(sizeof(void *));
+};
+
+static inline void iwl_op_mode_stop(struct iwl_op_mode *op_mode)
+{
+	might_sleep();
+	op_mode->ops->stop(op_mode);
+}
+
+static inline void iwl_op_mode_rx(struct iwl_op_mode *op_mode,
+				  struct napi_struct *napi,
+				  struct iwl_rx_cmd_buffer *rxb)
+{
+	return op_mode->ops->rx(op_mode, napi, rxb);
+}
+
+static inline void iwl_op_mode_rx_rss(struct iwl_op_mode *op_mode,
+				      struct napi_struct *napi,
+				      struct iwl_rx_cmd_buffer *rxb,
+				      unsigned int queue)
+{
+	op_mode->ops->rx_rss(op_mode, napi, rxb, queue);
+}
+
+static inline void iwl_op_mode_async_cb(struct iwl_op_mode *op_mode,
+					const struct iwl_device_cmd *cmd)
+{
+	if (op_mode->ops->async_cb)
+		op_mode->ops->async_cb(op_mode, cmd);
+}
+
+static inline void iwl_op_mode_queue_full(struct iwl_op_mode *op_mode,
+					  int queue)
+{
+	op_mode->ops->queue_full(op_mode, queue);
+}
+
+static inline void iwl_op_mode_queue_not_full(struct iwl_op_mode *op_mode,
+					      int queue)
+{
+	op_mode->ops->queue_not_full(op_mode, queue);
+}
+
+static inline bool __must_check
+iwl_op_mode_hw_rf_kill(struct iwl_op_mode *op_mode, bool state)
+{
+	might_sleep();
+	return op_mode->ops->hw_rf_kill(op_mode, state);
+}
+
+static inline void iwl_op_mode_free_skb(struct iwl_op_mode *op_mode,
+					struct sk_buff *skb)
+{
+	if (WARN_ON_ONCE(!op_mode))
+		return;
+	op_mode->ops->free_skb(op_mode, skb);
+}
+
+static inline void iwl_op_mode_nic_error(struct iwl_op_mode *op_mode, bool sync)
+{
+	op_mode->ops->nic_error(op_mode, sync);
+}
+
+static inline void iwl_op_mode_cmd_queue_full(struct iwl_op_mode *op_mode)
+{
+	op_mode->ops->cmd_queue_full(op_mode);
+}
+
+static inline void iwl_op_mode_nic_config(struct iwl_op_mode *op_mode)
+{
+	might_sleep();
+	op_mode->ops->nic_config(op_mode);
+}
+
+static inline void iwl_op_mode_wimax_active(struct iwl_op_mode *op_mode)
+{
+	might_sleep();
+	op_mode->ops->wimax_active(op_mode);
+}
+
+static inline void iwl_op_mode_time_point(struct iwl_op_mode *op_mode,
+					  enum iwl_fw_ini_time_point tp_id,
+					  union iwl_dbg_tlv_tp_data *tp_data)
+{
+	if (!op_mode || !op_mode->ops || !op_mode->ops->time_point)
+		return;
+	op_mode->ops->time_point(op_mode, tp_id, tp_data);
+}
+
+#endif /* __iwl_op_mode_h__ */