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, 382 insertions, 0 deletions

diff --git a/drivers/thunderbolt/acpi.c b/drivers/thunderbolt/acpi.c
new file mode 100644
index 000000000..317e4f5fd
--- /dev/null
+++ b/drivers/thunderbolt/acpi.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ACPI support
+ *
+ * Copyright (C) 2020, Intel Corporation
+ * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/pm_runtime.h>
+
+#include "tb.h"
+
+static acpi_status tb_acpi_add_link(acpi_handle handle, u32 level, void *data,
+				    void **return_value)
+{
+	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
+	struct fwnode_handle *fwnode;
+	struct tb_nhi *nhi = data;
+	struct pci_dev *pdev;
+	struct device *dev;
+
+	if (!adev)
+		return AE_OK;
+
+	fwnode = fwnode_find_reference(acpi_fwnode_handle(adev), "usb4-host-interface", 0);
+	if (IS_ERR(fwnode))
+		return AE_OK;
+
+	/* It needs to reference this NHI */
+	if (dev_fwnode(&nhi->pdev->dev) != fwnode)
+		goto out_put;
+
+	/*
+	 * Try to find physical device walking upwards to the hierarcy.
+	 * We need to do this because the xHCI driver might not yet be
+	 * bound so the USB3 SuperSpeed ports are not yet created.
+	 */
+	dev = acpi_get_first_physical_node(adev);
+	while (!dev) {
+		adev = acpi_dev_parent(adev);
+		if (!adev)
+			break;
+		dev = acpi_get_first_physical_node(adev);
+	}
+
+	if (!dev)
+		goto out_put;
+
+	/*
+	 * Check that the device is PCIe. This is because USB3
+	 * SuperSpeed ports have this property and they are not power
+	 * managed with the xHCI and the SuperSpeed hub so we create the
+	 * link from xHCI instead.
+	 */
+	while (dev && !dev_is_pci(dev))
+		dev = dev->parent;
+
+	if (!dev)
+		goto out_put;
+
+	/*
+	 * Check that this actually matches the type of device we
+	 * expect. It should either be xHCI or PCIe root/downstream
+	 * port.
+	 */
+	pdev = to_pci_dev(dev);
+	if (pdev->class == PCI_CLASS_SERIAL_USB_XHCI ||
+	    (pci_is_pcie(pdev) &&
+		(pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT ||
+		 pci_pcie_type(pdev) == PCI_EXP_TYPE_DOWNSTREAM))) {
+		const struct device_link *link;
+
+		/*
+		 * Make them both active first to make sure the NHI does
+		 * not runtime suspend before the consumer. The
+		 * pm_runtime_put() below then allows the consumer to
+		 * runtime suspend again (which then allows NHI runtime
+		 * suspend too now that the device link is established).
+		 */
+		pm_runtime_get_sync(&pdev->dev);
+
+		link = device_link_add(&pdev->dev, &nhi->pdev->dev,
+				       DL_FLAG_AUTOREMOVE_SUPPLIER |
+				       DL_FLAG_RPM_ACTIVE |
+				       DL_FLAG_PM_RUNTIME);
+		if (link) {
+			dev_dbg(&nhi->pdev->dev, "created link from %s\n",
+				dev_name(&pdev->dev));
+		} else {
+			dev_warn(&nhi->pdev->dev, "device link creation from %s failed\n",
+				 dev_name(&pdev->dev));
+		}
+
+		pm_runtime_put(&pdev->dev);
+	}
+
+out_put:
+	fwnode_handle_put(fwnode);
+	return AE_OK;
+}
+
+/**
+ * tb_acpi_add_links() - Add device links based on ACPI description
+ * @nhi: Pointer to NHI
+ *
+ * Goes over ACPI namespace finding tunneled ports that reference to
+ * @nhi ACPI node. For each reference a device link is added. The link
+ * is automatically removed by the driver core.
+ */
+void tb_acpi_add_links(struct tb_nhi *nhi)
+{
+	acpi_status status;
+
+	if (!has_acpi_companion(&nhi->pdev->dev))
+		return;
+
+	/*
+	 * Find all devices that have usb4-host-controller interface
+	 * property that references to this NHI.
+	 */
+	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 32,
+				     tb_acpi_add_link, NULL, nhi, NULL);
+	if (ACPI_FAILURE(status))
+		dev_warn(&nhi->pdev->dev, "failed to enumerate tunneled ports\n");
+}
+
+/**
+ * tb_acpi_is_native() - Did the platform grant native TBT/USB4 control
+ *
+ * Returns %true if the platform granted OS native control over
+ * TBT/USB4. In this case software based connection manager can be used,
+ * otherwise there is firmware based connection manager running.
+ */
+bool tb_acpi_is_native(void)
+{
+	return osc_sb_native_usb4_support_confirmed &&
+	       osc_sb_native_usb4_control;
+}
+
+/**
+ * tb_acpi_may_tunnel_usb3() - Is USB3 tunneling allowed by the platform
+ *
+ * When software based connection manager is used, this function
+ * returns %true if platform allows native USB3 tunneling.
+ */
+bool tb_acpi_may_tunnel_usb3(void)
+{
+	if (tb_acpi_is_native())
+		return osc_sb_native_usb4_control & OSC_USB_USB3_TUNNELING;
+	return true;
+}
+
+/**
+ * tb_acpi_may_tunnel_dp() - Is DisplayPort tunneling allowed by the platform
+ *
+ * When software based connection manager is used, this function
+ * returns %true if platform allows native DP tunneling.
+ */
+bool tb_acpi_may_tunnel_dp(void)
+{
+	if (tb_acpi_is_native())
+		return osc_sb_native_usb4_control & OSC_USB_DP_TUNNELING;
+	return true;
+}
+
+/**
+ * tb_acpi_may_tunnel_pcie() - Is PCIe tunneling allowed by the platform
+ *
+ * When software based connection manager is used, this function
+ * returns %true if platform allows native PCIe tunneling.
+ */
+bool tb_acpi_may_tunnel_pcie(void)
+{
+	if (tb_acpi_is_native())
+		return osc_sb_native_usb4_control & OSC_USB_PCIE_TUNNELING;
+	return true;
+}
+
+/**
+ * tb_acpi_is_xdomain_allowed() - Are XDomain connections allowed
+ *
+ * When software based connection manager is used, this function
+ * returns %true if platform allows XDomain connections.
+ */
+bool tb_acpi_is_xdomain_allowed(void)
+{
+	if (tb_acpi_is_native())
+		return osc_sb_native_usb4_control & OSC_USB_XDOMAIN;
+	return true;
+}
+
+/* UUID for retimer _DSM: e0053122-795b-4122-8a5e-57be1d26acb3 */
+static const guid_t retimer_dsm_guid =
+	GUID_INIT(0xe0053122, 0x795b, 0x4122,
+		  0x8a, 0x5e, 0x57, 0xbe, 0x1d, 0x26, 0xac, 0xb3);
+
+#define RETIMER_DSM_QUERY_ONLINE_STATE	1
+#define RETIMER_DSM_SET_ONLINE_STATE	2
+
+static int tb_acpi_retimer_set_power(struct tb_port *port, bool power)
+{
+	struct usb4_port *usb4 = port->usb4;
+	union acpi_object argv4[2];
+	struct acpi_device *adev;
+	union acpi_object *obj;
+	int ret;
+
+	if (!usb4->can_offline)
+		return 0;
+
+	adev = ACPI_COMPANION(&usb4->dev);
+	if (WARN_ON(!adev))
+		return 0;
+
+	/* Check if we are already powered on (and in correct mode) */
+	obj = acpi_evaluate_dsm_typed(adev->handle, &retimer_dsm_guid, 1,
+				      RETIMER_DSM_QUERY_ONLINE_STATE, NULL,
+				      ACPI_TYPE_INTEGER);
+	if (!obj) {
+		tb_port_warn(port, "ACPI: query online _DSM failed\n");
+		return -EIO;
+	}
+
+	ret = obj->integer.value;
+	ACPI_FREE(obj);
+
+	if (power == ret)
+		return 0;
+
+	tb_port_dbg(port, "ACPI: calling _DSM to power %s retimers\n",
+		    power ? "on" : "off");
+
+	argv4[0].type = ACPI_TYPE_PACKAGE;
+	argv4[0].package.count = 1;
+	argv4[0].package.elements = &argv4[1];
+	argv4[1].integer.type = ACPI_TYPE_INTEGER;
+	argv4[1].integer.value = power;
+
+	obj = acpi_evaluate_dsm_typed(adev->handle, &retimer_dsm_guid, 1,
+				      RETIMER_DSM_SET_ONLINE_STATE, argv4,
+				      ACPI_TYPE_INTEGER);
+	if (!obj) {
+		tb_port_warn(port,
+			     "ACPI: set online state _DSM evaluation failed\n");
+		return -EIO;
+	}
+
+	ret = obj->integer.value;
+	ACPI_FREE(obj);
+
+	if (ret >= 0) {
+		if (power)
+			return ret == 1 ? 0 : -EBUSY;
+		return 0;
+	}
+
+	tb_port_warn(port, "ACPI: set online state _DSM failed with error %d\n", ret);
+	return -EIO;
+}
+
+/**
+ * tb_acpi_power_on_retimers() - Call platform to power on retimers
+ * @port: USB4 port
+ *
+ * Calls platform to turn on power to all retimers behind this USB4
+ * port. After this function returns successfully the caller can
+ * continue with the normal retimer flows (as specified in the USB4
+ * spec). Note if this returns %-EBUSY it means the type-C port is in
+ * non-USB4/TBT mode (there is non-USB4/TBT device connected).
+ *
+ * This should only be called if the USB4/TBT link is not up.
+ *
+ * Returns %0 on success.
+ */
+int tb_acpi_power_on_retimers(struct tb_port *port)
+{
+	return tb_acpi_retimer_set_power(port, true);
+}
+
+/**
+ * tb_acpi_power_off_retimers() - Call platform to power off retimers
+ * @port: USB4 port
+ *
+ * This is the opposite of tb_acpi_power_on_retimers(). After returning
+ * successfully the normal operations with the @port can continue.
+ *
+ * Returns %0 on success.
+ */
+int tb_acpi_power_off_retimers(struct tb_port *port)
+{
+	return tb_acpi_retimer_set_power(port, false);
+}
+
+static bool tb_acpi_bus_match(struct device *dev)
+{
+	return tb_is_switch(dev) || tb_is_usb4_port_device(dev);
+}
+
+static struct acpi_device *tb_acpi_switch_find_companion(struct tb_switch *sw)
+{
+	struct acpi_device *adev = NULL;
+	struct tb_switch *parent_sw;
+
+	/*
+	 * Device routers exists under the downstream facing USB4 port
+	 * of the parent router. Their _ADR is always 0.
+	 */
+	parent_sw = tb_switch_parent(sw);
+	if (parent_sw) {
+		struct tb_port *port = tb_port_at(tb_route(sw), parent_sw);
+		struct acpi_device *port_adev;
+
+		port_adev = acpi_find_child_by_adr(ACPI_COMPANION(&parent_sw->dev),
+						   port->port);
+		if (port_adev)
+			adev = acpi_find_child_device(port_adev, 0, false);
+	} else {
+		struct tb_nhi *nhi = sw->tb->nhi;
+		struct acpi_device *parent_adev;
+
+		parent_adev = ACPI_COMPANION(&nhi->pdev->dev);
+		if (parent_adev)
+			adev = acpi_find_child_device(parent_adev, 0, false);
+	}
+
+	return adev;
+}
+
+static struct acpi_device *tb_acpi_find_companion(struct device *dev)
+{
+	/*
+	 * The Thunderbolt/USB4 hierarchy looks like following:
+	 *
+	 * Device (NHI)
+	 *   Device (HR)		// Host router _ADR == 0
+	 *      Device (DFP0)		// Downstream port _ADR == lane 0 adapter
+	 *        Device (DR)		// Device router _ADR == 0
+	 *          Device (UFP)	// Upstream port _ADR == lane 0 adapter
+	 *      Device (DFP1)		// Downstream port _ADR == lane 0 adapter number
+	 *
+	 * At the moment we bind the host router to the corresponding
+	 * Linux device.
+	 */
+	if (tb_is_switch(dev))
+		return tb_acpi_switch_find_companion(tb_to_switch(dev));
+	else if (tb_is_usb4_port_device(dev))
+		return acpi_find_child_by_adr(ACPI_COMPANION(dev->parent),
+					      tb_to_usb4_port_device(dev)->port->port);
+	return NULL;
+}
+
+static void tb_acpi_setup(struct device *dev)
+{
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+	struct usb4_port *usb4 = tb_to_usb4_port_device(dev);
+
+	if (!adev || !usb4)
+		return;
+
+	if (acpi_check_dsm(adev->handle, &retimer_dsm_guid, 1,
+			   BIT(RETIMER_DSM_QUERY_ONLINE_STATE) |
+			   BIT(RETIMER_DSM_SET_ONLINE_STATE)))
+		usb4->can_offline = true;
+}
+
+static struct acpi_bus_type tb_acpi_bus = {
+	.name = "thunderbolt",
+	.match = tb_acpi_bus_match,
+	.find_companion = tb_acpi_find_companion,
+	.setup = tb_acpi_setup,
+};
+
+int tb_acpi_init(void)
+{
+	return register_acpi_bus_type(&tb_acpi_bus);
+}
+
+void tb_acpi_exit(void)
+{
+	unregister_acpi_bus_type(&tb_acpi_bus);
+}