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, 349 insertions, 0 deletions

diff --git a/drivers/greybus/core.c b/drivers/greybus/core.c
new file mode 100644
index 000000000..e546c6431
--- /dev/null
+++ b/drivers/greybus/core.c
@@ -0,0 +1,349 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Greybus "Core"
+ *
+ * Copyright 2014-2015 Google Inc.
+ * Copyright 2014-2015 Linaro Ltd.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define CREATE_TRACE_POINTS
+#include <linux/greybus.h>
+#include "greybus_trace.h"
+
+#define GB_BUNDLE_AUTOSUSPEND_MS	3000
+
+/* Allow greybus to be disabled at boot if needed */
+static bool nogreybus;
+#ifdef MODULE
+module_param(nogreybus, bool, 0444);
+#else
+core_param(nogreybus, nogreybus, bool, 0444);
+#endif
+int greybus_disabled(void)
+{
+	return nogreybus;
+}
+EXPORT_SYMBOL_GPL(greybus_disabled);
+
+static bool greybus_match_one_id(struct gb_bundle *bundle,
+				 const struct greybus_bundle_id *id)
+{
+	if ((id->match_flags & GREYBUS_ID_MATCH_VENDOR) &&
+	    (id->vendor != bundle->intf->vendor_id))
+		return false;
+
+	if ((id->match_flags & GREYBUS_ID_MATCH_PRODUCT) &&
+	    (id->product != bundle->intf->product_id))
+		return false;
+
+	if ((id->match_flags & GREYBUS_ID_MATCH_CLASS) &&
+	    (id->class != bundle->class))
+		return false;
+
+	return true;
+}
+
+static const struct greybus_bundle_id *
+greybus_match_id(struct gb_bundle *bundle, const struct greybus_bundle_id *id)
+{
+	if (!id)
+		return NULL;
+
+	for (; id->vendor || id->product || id->class || id->driver_info;
+									id++) {
+		if (greybus_match_one_id(bundle, id))
+			return id;
+	}
+
+	return NULL;
+}
+
+static int greybus_match_device(struct device *dev, struct device_driver *drv)
+{
+	struct greybus_driver *driver = to_greybus_driver(drv);
+	struct gb_bundle *bundle;
+	const struct greybus_bundle_id *id;
+
+	if (!is_gb_bundle(dev))
+		return 0;
+
+	bundle = to_gb_bundle(dev);
+
+	id = greybus_match_id(bundle, driver->id_table);
+	if (id)
+		return 1;
+	/* FIXME - Dynamic ids? */
+	return 0;
+}
+
+static int greybus_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	struct gb_host_device *hd;
+	struct gb_module *module = NULL;
+	struct gb_interface *intf = NULL;
+	struct gb_control *control = NULL;
+	struct gb_bundle *bundle = NULL;
+	struct gb_svc *svc = NULL;
+
+	if (is_gb_host_device(dev)) {
+		hd = to_gb_host_device(dev);
+	} else if (is_gb_module(dev)) {
+		module = to_gb_module(dev);
+		hd = module->hd;
+	} else if (is_gb_interface(dev)) {
+		intf = to_gb_interface(dev);
+		module = intf->module;
+		hd = intf->hd;
+	} else if (is_gb_control(dev)) {
+		control = to_gb_control(dev);
+		intf = control->intf;
+		module = intf->module;
+		hd = intf->hd;
+	} else if (is_gb_bundle(dev)) {
+		bundle = to_gb_bundle(dev);
+		intf = bundle->intf;
+		module = intf->module;
+		hd = intf->hd;
+	} else if (is_gb_svc(dev)) {
+		svc = to_gb_svc(dev);
+		hd = svc->hd;
+	} else {
+		dev_WARN(dev, "uevent for unknown greybus device \"type\"!\n");
+		return -EINVAL;
+	}
+
+	if (add_uevent_var(env, "BUS=%u", hd->bus_id))
+		return -ENOMEM;
+
+	if (module) {
+		if (add_uevent_var(env, "MODULE=%u", module->module_id))
+			return -ENOMEM;
+	}
+
+	if (intf) {
+		if (add_uevent_var(env, "INTERFACE=%u", intf->interface_id))
+			return -ENOMEM;
+		if (add_uevent_var(env, "GREYBUS_ID=%08x/%08x",
+				   intf->vendor_id, intf->product_id))
+			return -ENOMEM;
+	}
+
+	if (bundle) {
+		// FIXME
+		// add a uevent that can "load" a bundle type
+		// This is what we need to bind a driver to so use the info
+		// in gmod here as well
+
+		if (add_uevent_var(env, "BUNDLE=%u", bundle->id))
+			return -ENOMEM;
+		if (add_uevent_var(env, "BUNDLE_CLASS=%02x", bundle->class))
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void greybus_shutdown(struct device *dev)
+{
+	if (is_gb_host_device(dev)) {
+		struct gb_host_device *hd;
+
+		hd = to_gb_host_device(dev);
+		gb_hd_shutdown(hd);
+	}
+}
+
+struct bus_type greybus_bus_type = {
+	.name =		"greybus",
+	.match =	greybus_match_device,
+	.uevent =	greybus_uevent,
+	.shutdown =	greybus_shutdown,
+};
+
+static int greybus_probe(struct device *dev)
+{
+	struct greybus_driver *driver = to_greybus_driver(dev->driver);
+	struct gb_bundle *bundle = to_gb_bundle(dev);
+	const struct greybus_bundle_id *id;
+	int retval;
+
+	/* match id */
+	id = greybus_match_id(bundle, driver->id_table);
+	if (!id)
+		return -ENODEV;
+
+	retval = pm_runtime_get_sync(&bundle->intf->dev);
+	if (retval < 0) {
+		pm_runtime_put_noidle(&bundle->intf->dev);
+		return retval;
+	}
+
+	retval = gb_control_bundle_activate(bundle->intf->control, bundle->id);
+	if (retval) {
+		pm_runtime_put(&bundle->intf->dev);
+		return retval;
+	}
+
+	/*
+	 * Unbound bundle devices are always deactivated. During probe, the
+	 * Runtime PM is set to enabled and active and the usage count is
+	 * incremented. If the driver supports runtime PM, it should call
+	 * pm_runtime_put() in its probe routine and pm_runtime_get_sync()
+	 * in remove routine.
+	 */
+	pm_runtime_set_autosuspend_delay(dev, GB_BUNDLE_AUTOSUSPEND_MS);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	retval = driver->probe(bundle, id);
+	if (retval) {
+		/*
+		 * Catch buggy drivers that fail to destroy their connections.
+		 */
+		WARN_ON(!list_empty(&bundle->connections));
+
+		gb_control_bundle_deactivate(bundle->intf->control, bundle->id);
+
+		pm_runtime_disable(dev);
+		pm_runtime_set_suspended(dev);
+		pm_runtime_put_noidle(dev);
+		pm_runtime_dont_use_autosuspend(dev);
+		pm_runtime_put(&bundle->intf->dev);
+
+		return retval;
+	}
+
+	pm_runtime_put(&bundle->intf->dev);
+
+	return 0;
+}
+
+static int greybus_remove(struct device *dev)
+{
+	struct greybus_driver *driver = to_greybus_driver(dev->driver);
+	struct gb_bundle *bundle = to_gb_bundle(dev);
+	struct gb_connection *connection;
+	int retval;
+
+	retval = pm_runtime_get_sync(dev);
+	if (retval < 0)
+		dev_err(dev, "failed to resume bundle: %d\n", retval);
+
+	/*
+	 * Disable (non-offloaded) connections early in case the interface is
+	 * already gone to avoid unceccessary operation timeouts during
+	 * driver disconnect. Otherwise, only disable incoming requests.
+	 */
+	list_for_each_entry(connection, &bundle->connections, bundle_links) {
+		if (gb_connection_is_offloaded(connection))
+			continue;
+
+		if (bundle->intf->disconnected)
+			gb_connection_disable_forced(connection);
+		else
+			gb_connection_disable_rx(connection);
+	}
+
+	driver->disconnect(bundle);
+
+	/* Catch buggy drivers that fail to destroy their connections. */
+	WARN_ON(!list_empty(&bundle->connections));
+
+	if (!bundle->intf->disconnected)
+		gb_control_bundle_deactivate(bundle->intf->control, bundle->id);
+
+	pm_runtime_put_noidle(dev);
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_put_noidle(dev);
+
+	return 0;
+}
+
+int greybus_register_driver(struct greybus_driver *driver, struct module *owner,
+			    const char *mod_name)
+{
+	int retval;
+
+	if (greybus_disabled())
+		return -ENODEV;
+
+	driver->driver.bus = &greybus_bus_type;
+	driver->driver.name = driver->name;
+	driver->driver.probe = greybus_probe;
+	driver->driver.remove = greybus_remove;
+	driver->driver.owner = owner;
+	driver->driver.mod_name = mod_name;
+
+	retval = driver_register(&driver->driver);
+	if (retval)
+		return retval;
+
+	pr_info("registered new driver %s\n", driver->name);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(greybus_register_driver);
+
+void greybus_deregister_driver(struct greybus_driver *driver)
+{
+	driver_unregister(&driver->driver);
+}
+EXPORT_SYMBOL_GPL(greybus_deregister_driver);
+
+static int __init gb_init(void)
+{
+	int retval;
+
+	if (greybus_disabled())
+		return -ENODEV;
+
+	BUILD_BUG_ON(CPORT_ID_MAX >= (long)CPORT_ID_BAD);
+
+	gb_debugfs_init();
+
+	retval = bus_register(&greybus_bus_type);
+	if (retval) {
+		pr_err("bus_register failed (%d)\n", retval);
+		goto error_bus;
+	}
+
+	retval = gb_hd_init();
+	if (retval) {
+		pr_err("gb_hd_init failed (%d)\n", retval);
+		goto error_hd;
+	}
+
+	retval = gb_operation_init();
+	if (retval) {
+		pr_err("gb_operation_init failed (%d)\n", retval);
+		goto error_operation;
+	}
+	return 0;	/* Success */
+
+error_operation:
+	gb_hd_exit();
+error_hd:
+	bus_unregister(&greybus_bus_type);
+error_bus:
+	gb_debugfs_cleanup();
+
+	return retval;
+}
+module_init(gb_init);
+
+static void __exit gb_exit(void)
+{
+	gb_operation_exit();
+	gb_hd_exit();
+	bus_unregister(&greybus_bus_type);
+	gb_debugfs_cleanup();
+	tracepoint_synchronize_unregister();
+}
+module_exit(gb_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");