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, 368 insertions, 0 deletions

diff --git a/drivers/usb/core/ledtrig-usbport.c b/drivers/usb/core/ledtrig-usbport.c
new file mode 100644
index 000000000..ba371a24f
--- /dev/null
+++ b/drivers/usb/core/ledtrig-usbport.c
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USB port LED trigger
+ *
+ * Copyright (C) 2016 Rafał Miłecki <rafal@milecki.pl>
+ */
+
+#include <linux/device.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/of.h>
+
+struct usbport_trig_data {
+	struct led_classdev *led_cdev;
+	struct list_head ports;
+	struct notifier_block nb;
+	int count; /* Amount of connected matching devices */
+};
+
+struct usbport_trig_port {
+	struct usbport_trig_data *data;
+	struct usb_device *hub;
+	int portnum;
+	char *port_name;
+	bool observed;
+	struct device_attribute attr;
+	struct list_head list;
+};
+
+/***************************************
+ * Helpers
+ ***************************************/
+
+/*
+ * usbport_trig_usb_dev_observed - Check if dev is connected to observed port
+ */
+static bool usbport_trig_usb_dev_observed(struct usbport_trig_data *usbport_data,
+					  struct usb_device *usb_dev)
+{
+	struct usbport_trig_port *port;
+
+	if (!usb_dev->parent)
+		return false;
+
+	list_for_each_entry(port, &usbport_data->ports, list) {
+		if (usb_dev->parent == port->hub &&
+		    usb_dev->portnum == port->portnum)
+			return port->observed;
+	}
+
+	return false;
+}
+
+static int usbport_trig_usb_dev_check(struct usb_device *usb_dev, void *data)
+{
+	struct usbport_trig_data *usbport_data = data;
+
+	if (usbport_trig_usb_dev_observed(usbport_data, usb_dev))
+		usbport_data->count++;
+
+	return 0;
+}
+
+/*
+ * usbport_trig_update_count - Recalculate amount of connected matching devices
+ */
+static void usbport_trig_update_count(struct usbport_trig_data *usbport_data)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+
+	usbport_data->count = 0;
+	usb_for_each_dev(usbport_data, usbport_trig_usb_dev_check);
+	led_set_brightness(led_cdev, usbport_data->count ? LED_FULL : LED_OFF);
+}
+
+/***************************************
+ * Device attr
+ ***************************************/
+
+static ssize_t usbport_trig_port_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct usbport_trig_port *port = container_of(attr,
+						      struct usbport_trig_port,
+						      attr);
+
+	return sprintf(buf, "%d\n", port->observed) + 1;
+}
+
+static ssize_t usbport_trig_port_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t size)
+{
+	struct usbport_trig_port *port = container_of(attr,
+						      struct usbport_trig_port,
+						      attr);
+
+	if (!strcmp(buf, "0") || !strcmp(buf, "0\n"))
+		port->observed = 0;
+	else if (!strcmp(buf, "1") || !strcmp(buf, "1\n"))
+		port->observed = 1;
+	else
+		return -EINVAL;
+
+	usbport_trig_update_count(port->data);
+
+	return size;
+}
+
+static struct attribute *ports_attrs[] = {
+	NULL,
+};
+
+static const struct attribute_group ports_group = {
+	.name = "ports",
+	.attrs = ports_attrs,
+};
+
+/***************************************
+ * Adding & removing ports
+ ***************************************/
+
+/*
+ * usbport_trig_port_observed - Check if port should be observed
+ */
+static bool usbport_trig_port_observed(struct usbport_trig_data *usbport_data,
+				       struct usb_device *usb_dev, int port1)
+{
+	struct device *dev = usbport_data->led_cdev->dev;
+	struct device_node *led_np = dev->of_node;
+	struct of_phandle_args args;
+	struct device_node *port_np;
+	int count, i;
+
+	if (!led_np)
+		return false;
+
+	/*
+	 * Get node of port being added
+	 *
+	 * FIXME: This is really the device node of the connected device
+	 */
+	port_np = usb_of_get_device_node(usb_dev, port1);
+	if (!port_np)
+		return false;
+
+	of_node_put(port_np);
+
+	/* Amount of trigger sources for this LED */
+	count = of_count_phandle_with_args(led_np, "trigger-sources",
+					   "#trigger-source-cells");
+	if (count < 0) {
+		dev_warn(dev, "Failed to get trigger sources for %pOF\n",
+			 led_np);
+		return false;
+	}
+
+	/* Check list of sources for this specific port */
+	for (i = 0; i < count; i++) {
+		int err;
+
+		err = of_parse_phandle_with_args(led_np, "trigger-sources",
+						 "#trigger-source-cells", i,
+						 &args);
+		if (err) {
+			dev_err(dev, "Failed to get trigger source phandle at index %d: %d\n",
+				i, err);
+			continue;
+		}
+
+		of_node_put(args.np);
+
+		if (args.np == port_np)
+			return true;
+	}
+
+	return false;
+}
+
+static int usbport_trig_add_port(struct usbport_trig_data *usbport_data,
+				 struct usb_device *usb_dev,
+				 const char *hub_name, int portnum)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+	struct usbport_trig_port *port;
+	size_t len;
+	int err;
+
+	port = kzalloc(sizeof(*port), GFP_KERNEL);
+	if (!port) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+
+	port->data = usbport_data;
+	port->hub = usb_dev;
+	port->portnum = portnum;
+	port->observed = usbport_trig_port_observed(usbport_data, usb_dev,
+						    portnum);
+
+	len = strlen(hub_name) + 8;
+	port->port_name = kzalloc(len, GFP_KERNEL);
+	if (!port->port_name) {
+		err = -ENOMEM;
+		goto err_free_port;
+	}
+	snprintf(port->port_name, len, "%s-port%d", hub_name, portnum);
+
+	sysfs_attr_init(&port->attr.attr);
+	port->attr.attr.name = port->port_name;
+	port->attr.attr.mode = S_IRUSR | S_IWUSR;
+	port->attr.show = usbport_trig_port_show;
+	port->attr.store = usbport_trig_port_store;
+
+	err = sysfs_add_file_to_group(&led_cdev->dev->kobj, &port->attr.attr,
+				      ports_group.name);
+	if (err)
+		goto err_free_port_name;
+
+	list_add_tail(&port->list, &usbport_data->ports);
+
+	return 0;
+
+err_free_port_name:
+	kfree(port->port_name);
+err_free_port:
+	kfree(port);
+err_out:
+	return err;
+}
+
+static int usbport_trig_add_usb_dev_ports(struct usb_device *usb_dev,
+					  void *data)
+{
+	struct usbport_trig_data *usbport_data = data;
+	int i;
+
+	for (i = 1; i <= usb_dev->maxchild; i++)
+		usbport_trig_add_port(usbport_data, usb_dev,
+				      dev_name(&usb_dev->dev), i);
+
+	return 0;
+}
+
+static void usbport_trig_remove_port(struct usbport_trig_data *usbport_data,
+				     struct usbport_trig_port *port)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+
+	list_del(&port->list);
+	sysfs_remove_file_from_group(&led_cdev->dev->kobj, &port->attr.attr,
+				     ports_group.name);
+	kfree(port->port_name);
+	kfree(port);
+}
+
+static void usbport_trig_remove_usb_dev_ports(struct usbport_trig_data *usbport_data,
+					      struct usb_device *usb_dev)
+{
+	struct usbport_trig_port *port, *tmp;
+
+	list_for_each_entry_safe(port, tmp, &usbport_data->ports, list) {
+		if (port->hub == usb_dev)
+			usbport_trig_remove_port(usbport_data, port);
+	}
+}
+
+/***************************************
+ * Init, exit, etc.
+ ***************************************/
+
+static int usbport_trig_notify(struct notifier_block *nb, unsigned long action,
+			       void *data)
+{
+	struct usbport_trig_data *usbport_data =
+		container_of(nb, struct usbport_trig_data, nb);
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+	struct usb_device *usb_dev = data;
+	bool observed;
+
+	observed = usbport_trig_usb_dev_observed(usbport_data, usb_dev);
+
+	switch (action) {
+	case USB_DEVICE_ADD:
+		usbport_trig_add_usb_dev_ports(usb_dev, usbport_data);
+		if (observed && usbport_data->count++ == 0)
+			led_set_brightness(led_cdev, LED_FULL);
+		return NOTIFY_OK;
+	case USB_DEVICE_REMOVE:
+		usbport_trig_remove_usb_dev_ports(usbport_data, usb_dev);
+		if (observed && --usbport_data->count == 0)
+			led_set_brightness(led_cdev, LED_OFF);
+		return NOTIFY_OK;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static int usbport_trig_activate(struct led_classdev *led_cdev)
+{
+	struct usbport_trig_data *usbport_data;
+	int err;
+
+	usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL);
+	if (!usbport_data)
+		return -ENOMEM;
+	usbport_data->led_cdev = led_cdev;
+
+	/* List of ports */
+	INIT_LIST_HEAD(&usbport_data->ports);
+	err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group);
+	if (err)
+		goto err_free;
+	usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports);
+	usbport_trig_update_count(usbport_data);
+
+	/* Notifications */
+	usbport_data->nb.notifier_call = usbport_trig_notify;
+	led_set_trigger_data(led_cdev, usbport_data);
+	usb_register_notify(&usbport_data->nb);
+	return 0;
+
+err_free:
+	kfree(usbport_data);
+	return err;
+}
+
+static void usbport_trig_deactivate(struct led_classdev *led_cdev)
+{
+	struct usbport_trig_data *usbport_data = led_get_trigger_data(led_cdev);
+	struct usbport_trig_port *port, *tmp;
+
+	list_for_each_entry_safe(port, tmp, &usbport_data->ports, list) {
+		usbport_trig_remove_port(usbport_data, port);
+	}
+
+	sysfs_remove_group(&led_cdev->dev->kobj, &ports_group);
+
+	usb_unregister_notify(&usbport_data->nb);
+
+	kfree(usbport_data);
+}
+
+static struct led_trigger usbport_led_trigger = {
+	.name     = "usbport",
+	.activate = usbport_trig_activate,
+	.deactivate = usbport_trig_deactivate,
+};
+
+static int __init usbport_trig_init(void)
+{
+	return led_trigger_register(&usbport_led_trigger);
+}
+
+static void __exit usbport_trig_exit(void)
+{
+	led_trigger_unregister(&usbport_led_trigger);
+}
+
+module_init(usbport_trig_init);
+module_exit(usbport_trig_exit);
+
+MODULE_AUTHOR("Rafał Miłecki <rafal@milecki.pl>");
+MODULE_DESCRIPTION("USB port trigger");
+MODULE_LICENSE("GPL v2");