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/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
new file mode 100644
index 000000000..4042d87d5
--- /dev/null
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * PCI Express Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM Corp.
+ * Copyright (C) 2003-2004 Intel Corporation
+ *
+ * All rights reserved.
+ *
+ * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
+ *
+ * Authors:
+ *   Dan Zink <dan.zink@compaq.com>
+ *   Greg Kroah-Hartman <greg@kroah.com>
+ *   Dely Sy <dely.l.sy@intel.com>"
+ */
+
+#define pr_fmt(fmt) "pciehp: " fmt
+#define dev_fmt pr_fmt
+
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include "pciehp.h"
+
+#include "../pci.h"
+
+/* Global variables */
+bool pciehp_poll_mode;
+int pciehp_poll_time;
+
+/*
+ * not really modular, but the easiest way to keep compat with existing
+ * bootargs behaviour is to continue using module_param here.
+ */
+module_param(pciehp_poll_mode, bool, 0644);
+module_param(pciehp_poll_time, int, 0644);
+MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
+MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
+
+static int set_attention_status(struct hotplug_slot *slot, u8 value);
+static int get_power_status(struct hotplug_slot *slot, u8 *value);
+static int get_latch_status(struct hotplug_slot *slot, u8 *value);
+static int get_adapter_status(struct hotplug_slot *slot, u8 *value);
+
+static int init_slot(struct controller *ctrl)
+{
+	struct hotplug_slot_ops *ops;
+	char name[SLOT_NAME_SIZE];
+	int retval;
+
+	/* Setup hotplug slot ops */
+	ops = kzalloc(sizeof(*ops), GFP_KERNEL);
+	if (!ops)
+		return -ENOMEM;
+
+	ops->enable_slot = pciehp_sysfs_enable_slot;
+	ops->disable_slot = pciehp_sysfs_disable_slot;
+	ops->get_power_status = get_power_status;
+	ops->get_adapter_status = get_adapter_status;
+	ops->reset_slot = pciehp_reset_slot;
+	if (MRL_SENS(ctrl))
+		ops->get_latch_status = get_latch_status;
+	if (ATTN_LED(ctrl)) {
+		ops->get_attention_status = pciehp_get_attention_status;
+		ops->set_attention_status = set_attention_status;
+	} else if (ctrl->pcie->port->hotplug_user_indicators) {
+		ops->get_attention_status = pciehp_get_raw_indicator_status;
+		ops->set_attention_status = pciehp_set_raw_indicator_status;
+	}
+
+	/* register this slot with the hotplug pci core */
+	ctrl->hotplug_slot.ops = ops;
+	snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
+
+	retval = pci_hp_initialize(&ctrl->hotplug_slot,
+				   ctrl->pcie->port->subordinate, 0, name);
+	if (retval) {
+		ctrl_err(ctrl, "pci_hp_initialize failed: error %d\n", retval);
+		kfree(ops);
+	}
+	return retval;
+}
+
+static void cleanup_slot(struct controller *ctrl)
+{
+	struct hotplug_slot *hotplug_slot = &ctrl->hotplug_slot;
+
+	pci_hp_destroy(hotplug_slot);
+	kfree(hotplug_slot->ops);
+}
+
+/*
+ * set_attention_status - Turns the Attention Indicator on, off or blinking
+ */
+static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
+{
+	struct controller *ctrl = to_ctrl(hotplug_slot);
+	struct pci_dev *pdev = ctrl->pcie->port;
+
+	if (status)
+		status <<= PCI_EXP_SLTCTL_ATTN_IND_SHIFT;
+	else
+		status = PCI_EXP_SLTCTL_ATTN_IND_OFF;
+
+	pci_config_pm_runtime_get(pdev);
+	pciehp_set_indicators(ctrl, INDICATOR_NOOP, status);
+	pci_config_pm_runtime_put(pdev);
+	return 0;
+}
+
+static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
+{
+	struct controller *ctrl = to_ctrl(hotplug_slot);
+	struct pci_dev *pdev = ctrl->pcie->port;
+
+	pci_config_pm_runtime_get(pdev);
+	pciehp_get_power_status(ctrl, value);
+	pci_config_pm_runtime_put(pdev);
+	return 0;
+}
+
+static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
+{
+	struct controller *ctrl = to_ctrl(hotplug_slot);
+	struct pci_dev *pdev = ctrl->pcie->port;
+
+	pci_config_pm_runtime_get(pdev);
+	pciehp_get_latch_status(ctrl, value);
+	pci_config_pm_runtime_put(pdev);
+	return 0;
+}
+
+static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
+{
+	struct controller *ctrl = to_ctrl(hotplug_slot);
+	struct pci_dev *pdev = ctrl->pcie->port;
+	int ret;
+
+	pci_config_pm_runtime_get(pdev);
+	ret = pciehp_card_present_or_link_active(ctrl);
+	pci_config_pm_runtime_put(pdev);
+	if (ret < 0)
+		return ret;
+
+	*value = ret;
+	return 0;
+}
+
+/**
+ * pciehp_check_presence() - synthesize event if presence has changed
+ * @ctrl: controller to check
+ *
+ * On probe and resume, an explicit presence check is necessary to bring up an
+ * occupied slot or bring down an unoccupied slot.  This can't be triggered by
+ * events in the Slot Status register, they may be stale and are therefore
+ * cleared.  Secondly, sending an interrupt for "events that occur while
+ * interrupt generation is disabled [when] interrupt generation is subsequently
+ * enabled" is optional per PCIe r4.0, sec 6.7.3.4.
+ */
+static void pciehp_check_presence(struct controller *ctrl)
+{
+	int occupied;
+
+	down_read_nested(&ctrl->reset_lock, ctrl->depth);
+	mutex_lock(&ctrl->state_lock);
+
+	occupied = pciehp_card_present_or_link_active(ctrl);
+	if ((occupied > 0 && (ctrl->state == OFF_STATE ||
+			  ctrl->state == BLINKINGON_STATE)) ||
+	    (!occupied && (ctrl->state == ON_STATE ||
+			   ctrl->state == BLINKINGOFF_STATE)))
+		pciehp_request(ctrl, PCI_EXP_SLTSTA_PDC);
+
+	mutex_unlock(&ctrl->state_lock);
+	up_read(&ctrl->reset_lock);
+}
+
+static int pciehp_probe(struct pcie_device *dev)
+{
+	int rc;
+	struct controller *ctrl;
+
+	/* If this is not a "hotplug" service, we have no business here. */
+	if (dev->service != PCIE_PORT_SERVICE_HP)
+		return -ENODEV;
+
+	if (!dev->port->subordinate) {
+		/* Can happen if we run out of bus numbers during probe */
+		pci_err(dev->port,
+			"Hotplug bridge without secondary bus, ignoring\n");
+		return -ENODEV;
+	}
+
+	ctrl = pcie_init(dev);
+	if (!ctrl) {
+		pci_err(dev->port, "Controller initialization failed\n");
+		return -ENODEV;
+	}
+	set_service_data(dev, ctrl);
+
+	/* Setup the slot information structures */
+	rc = init_slot(ctrl);
+	if (rc) {
+		if (rc == -EBUSY)
+			ctrl_warn(ctrl, "Slot already registered by another hotplug driver\n");
+		else
+			ctrl_err(ctrl, "Slot initialization failed (%d)\n", rc);
+		goto err_out_release_ctlr;
+	}
+
+	/* Enable events after we have setup the data structures */
+	rc = pcie_init_notification(ctrl);
+	if (rc) {
+		ctrl_err(ctrl, "Notification initialization failed (%d)\n", rc);
+		goto err_out_free_ctrl_slot;
+	}
+
+	/* Publish to user space */
+	rc = pci_hp_add(&ctrl->hotplug_slot);
+	if (rc) {
+		ctrl_err(ctrl, "Publication to user space failed (%d)\n", rc);
+		goto err_out_shutdown_notification;
+	}
+
+	pciehp_check_presence(ctrl);
+
+	return 0;
+
+err_out_shutdown_notification:
+	pcie_shutdown_notification(ctrl);
+err_out_free_ctrl_slot:
+	cleanup_slot(ctrl);
+err_out_release_ctlr:
+	pciehp_release_ctrl(ctrl);
+	return -ENODEV;
+}
+
+static void pciehp_remove(struct pcie_device *dev)
+{
+	struct controller *ctrl = get_service_data(dev);
+
+	pci_hp_del(&ctrl->hotplug_slot);
+	pcie_shutdown_notification(ctrl);
+	cleanup_slot(ctrl);
+	pciehp_release_ctrl(ctrl);
+}
+
+#ifdef CONFIG_PM
+static bool pme_is_native(struct pcie_device *dev)
+{
+	const struct pci_host_bridge *host;
+
+	host = pci_find_host_bridge(dev->port->bus);
+	return pcie_ports_native || host->native_pme;
+}
+
+static void pciehp_disable_interrupt(struct pcie_device *dev)
+{
+	/*
+	 * Disable hotplug interrupt so that it does not trigger
+	 * immediately when the downstream link goes down.
+	 */
+	if (pme_is_native(dev))
+		pcie_disable_interrupt(get_service_data(dev));
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int pciehp_suspend(struct pcie_device *dev)
+{
+	/*
+	 * If the port is already runtime suspended we can keep it that
+	 * way.
+	 */
+	if (dev_pm_skip_suspend(&dev->port->dev))
+		return 0;
+
+	pciehp_disable_interrupt(dev);
+	return 0;
+}
+
+static int pciehp_resume_noirq(struct pcie_device *dev)
+{
+	struct controller *ctrl = get_service_data(dev);
+
+	/* pci_restore_state() just wrote to the Slot Control register */
+	ctrl->cmd_started = jiffies;
+	ctrl->cmd_busy = true;
+
+	/* clear spurious events from rediscovery of inserted card */
+	if (ctrl->state == ON_STATE || ctrl->state == BLINKINGOFF_STATE)
+		pcie_clear_hotplug_events(ctrl);
+
+	return 0;
+}
+#endif
+
+static int pciehp_resume(struct pcie_device *dev)
+{
+	struct controller *ctrl = get_service_data(dev);
+
+	if (pme_is_native(dev))
+		pcie_enable_interrupt(ctrl);
+
+	pciehp_check_presence(ctrl);
+
+	return 0;
+}
+
+static int pciehp_runtime_suspend(struct pcie_device *dev)
+{
+	pciehp_disable_interrupt(dev);
+	return 0;
+}
+
+static int pciehp_runtime_resume(struct pcie_device *dev)
+{
+	struct controller *ctrl = get_service_data(dev);
+
+	/* pci_restore_state() just wrote to the Slot Control register */
+	ctrl->cmd_started = jiffies;
+	ctrl->cmd_busy = true;
+
+	/* clear spurious events from rediscovery of inserted card */
+	if ((ctrl->state == ON_STATE || ctrl->state == BLINKINGOFF_STATE) &&
+	     pme_is_native(dev))
+		pcie_clear_hotplug_events(ctrl);
+
+	return pciehp_resume(dev);
+}
+#endif /* PM */
+
+static struct pcie_port_service_driver hpdriver_portdrv = {
+	.name		= "pciehp",
+	.port_type	= PCIE_ANY_PORT,
+	.service	= PCIE_PORT_SERVICE_HP,
+
+	.probe		= pciehp_probe,
+	.remove		= pciehp_remove,
+
+#ifdef	CONFIG_PM
+#ifdef	CONFIG_PM_SLEEP
+	.suspend	= pciehp_suspend,
+	.resume_noirq	= pciehp_resume_noirq,
+	.resume		= pciehp_resume,
+#endif
+	.runtime_suspend = pciehp_runtime_suspend,
+	.runtime_resume	= pciehp_runtime_resume,
+#endif	/* PM */
+
+	.slot_reset	= pciehp_slot_reset,
+};
+
+int __init pcie_hp_init(void)
+{
+	int retval = 0;
+
+	retval = pcie_port_service_register(&hpdriver_portdrv);
+	pr_debug("pcie_port_service_register = %d\n", retval);
+	if (retval)
+		pr_debug("Failure to register service\n");
+
+	return retval;
+}