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, 309 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
new file mode 100644
index 000000000..ae63e5a39
--- /dev/null
+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * cpcihp_zt5550.c
+ *
+ * Intel/Ziatech ZT5550 CompactPCI Host Controller driver
+ *
+ * Copyright 2002 SOMA Networks, Inc.
+ * Copyright 2001 Intel San Luis Obispo
+ * Copyright 2000,2001 MontaVista Software Inc.
+ *
+ * Send feedback to <scottm@somanetworks.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/signal.h>	/* IRQF_SHARED */
+#include "cpci_hotplug.h"
+#include "cpcihp_zt5550.h"
+
+#define DRIVER_VERSION	"0.2"
+#define DRIVER_AUTHOR	"Scott Murray <scottm@somanetworks.com>"
+#define DRIVER_DESC	"ZT5550 CompactPCI Hot Plug Driver"
+
+#define MY_NAME	"cpcihp_zt5550"
+
+#define dbg(format, arg...)					\
+	do {							\
+		if (debug)					\
+			printk(KERN_DEBUG "%s: " format "\n",	\
+				MY_NAME, ## arg);		\
+	} while (0)
+#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME, ## arg)
+#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME, ## arg)
+#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME, ## arg)
+
+/* local variables */
+static bool debug;
+static bool poll;
+static struct cpci_hp_controller_ops zt5550_hpc_ops;
+static struct cpci_hp_controller zt5550_hpc;
+
+/* Primary cPCI bus bridge device */
+static struct pci_dev *bus0_dev;
+static struct pci_bus *bus0;
+
+/* Host controller device */
+static struct pci_dev *hc_dev;
+
+/* Host controller register addresses */
+static void __iomem *hc_registers;
+static void __iomem *csr_hc_index;
+static void __iomem *csr_hc_data;
+static void __iomem *csr_int_status;
+static void __iomem *csr_int_mask;
+
+
+static int zt5550_hc_config(struct pci_dev *pdev)
+{
+	int ret;
+
+	/* Since we know that no boards exist with two HC chips, treat it as an error */
+	if (hc_dev) {
+		err("too many host controller devices?");
+		return -EBUSY;
+	}
+
+	ret = pci_enable_device(pdev);
+	if (ret) {
+		err("cannot enable %s\n", pci_name(pdev));
+		return ret;
+	}
+
+	hc_dev = pdev;
+	dbg("hc_dev = %p", hc_dev);
+	dbg("pci resource start %llx", (unsigned long long)pci_resource_start(hc_dev, 1));
+	dbg("pci resource len %llx", (unsigned long long)pci_resource_len(hc_dev, 1));
+
+	if (!request_mem_region(pci_resource_start(hc_dev, 1),
+				pci_resource_len(hc_dev, 1), MY_NAME)) {
+		err("cannot reserve MMIO region");
+		ret = -ENOMEM;
+		goto exit_disable_device;
+	}
+
+	hc_registers =
+	    ioremap(pci_resource_start(hc_dev, 1), pci_resource_len(hc_dev, 1));
+	if (!hc_registers) {
+		err("cannot remap MMIO region %llx @ %llx",
+			(unsigned long long)pci_resource_len(hc_dev, 1),
+			(unsigned long long)pci_resource_start(hc_dev, 1));
+		ret = -ENODEV;
+		goto exit_release_region;
+	}
+
+	csr_hc_index = hc_registers + CSR_HCINDEX;
+	csr_hc_data = hc_registers + CSR_HCDATA;
+	csr_int_status = hc_registers + CSR_INTSTAT;
+	csr_int_mask = hc_registers + CSR_INTMASK;
+
+	/*
+	 * Disable host control, fault and serial interrupts
+	 */
+	dbg("disabling host control, fault and serial interrupts");
+	writeb((u8) HC_INT_MASK_REG, csr_hc_index);
+	writeb((u8) ALL_INDEXED_INTS_MASK, csr_hc_data);
+	dbg("disabled host control, fault and serial interrupts");
+
+	/*
+	 * Disable timer0, timer1 and ENUM interrupts
+	 */
+	dbg("disabling timer0, timer1 and ENUM interrupts");
+	writeb((u8) ALL_DIRECT_INTS_MASK, csr_int_mask);
+	dbg("disabled timer0, timer1 and ENUM interrupts");
+	return 0;
+
+exit_release_region:
+	release_mem_region(pci_resource_start(hc_dev, 1),
+			   pci_resource_len(hc_dev, 1));
+exit_disable_device:
+	pci_disable_device(hc_dev);
+	return ret;
+}
+
+static int zt5550_hc_cleanup(void)
+{
+	if (!hc_dev)
+		return -ENODEV;
+
+	iounmap(hc_registers);
+	release_mem_region(pci_resource_start(hc_dev, 1),
+			   pci_resource_len(hc_dev, 1));
+	pci_disable_device(hc_dev);
+	return 0;
+}
+
+static int zt5550_hc_query_enum(void)
+{
+	u8 value;
+
+	value = inb_p(ENUM_PORT);
+	return ((value & ENUM_MASK) == ENUM_MASK);
+}
+
+static int zt5550_hc_check_irq(void *dev_id)
+{
+	int ret;
+	u8 reg;
+
+	ret = 0;
+	if (dev_id == zt5550_hpc.dev_id) {
+		reg = readb(csr_int_status);
+		if (reg)
+			ret = 1;
+	}
+	return ret;
+}
+
+static int zt5550_hc_enable_irq(void)
+{
+	u8 reg;
+
+	if (hc_dev == NULL)
+		return -ENODEV;
+
+	reg = readb(csr_int_mask);
+	reg = reg & ~ENUM_INT_MASK;
+	writeb(reg, csr_int_mask);
+	return 0;
+}
+
+static int zt5550_hc_disable_irq(void)
+{
+	u8 reg;
+
+	if (hc_dev == NULL)
+		return -ENODEV;
+
+	reg = readb(csr_int_mask);
+	reg = reg | ENUM_INT_MASK;
+	writeb(reg, csr_int_mask);
+	return 0;
+}
+
+static int zt5550_hc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int status;
+
+	status = zt5550_hc_config(pdev);
+	if (status != 0)
+		return status;
+
+	dbg("returned from zt5550_hc_config");
+
+	memset(&zt5550_hpc, 0, sizeof(struct cpci_hp_controller));
+	zt5550_hpc_ops.query_enum = zt5550_hc_query_enum;
+	zt5550_hpc.ops = &zt5550_hpc_ops;
+	if (!poll) {
+		zt5550_hpc.irq = hc_dev->irq;
+		zt5550_hpc.irq_flags = IRQF_SHARED;
+		zt5550_hpc.dev_id = hc_dev;
+
+		zt5550_hpc_ops.enable_irq = zt5550_hc_enable_irq;
+		zt5550_hpc_ops.disable_irq = zt5550_hc_disable_irq;
+		zt5550_hpc_ops.check_irq = zt5550_hc_check_irq;
+	} else {
+		info("using ENUM# polling mode");
+	}
+
+	status = cpci_hp_register_controller(&zt5550_hpc);
+	if (status != 0) {
+		err("could not register cPCI hotplug controller");
+		goto init_hc_error;
+	}
+	dbg("registered controller");
+
+	/* Look for first device matching cPCI bus's bridge vendor and device IDs */
+	bus0_dev = pci_get_device(PCI_VENDOR_ID_DEC,
+				  PCI_DEVICE_ID_DEC_21154, NULL);
+	if (!bus0_dev) {
+		status = -ENODEV;
+		goto init_register_error;
+	}
+	bus0 = bus0_dev->subordinate;
+	pci_dev_put(bus0_dev);
+
+	status = cpci_hp_register_bus(bus0, 0x0a, 0x0f);
+	if (status != 0) {
+		err("could not register cPCI hotplug bus");
+		goto init_register_error;
+	}
+	dbg("registered bus");
+
+	status = cpci_hp_start();
+	if (status != 0) {
+		err("could not started cPCI hotplug system");
+		cpci_hp_unregister_bus(bus0);
+		goto init_register_error;
+	}
+	dbg("started cpci hp system");
+
+	return 0;
+init_register_error:
+	cpci_hp_unregister_controller(&zt5550_hpc);
+init_hc_error:
+	err("status = %d", status);
+	zt5550_hc_cleanup();
+	return status;
+
+}
+
+static void zt5550_hc_remove_one(struct pci_dev *pdev)
+{
+	cpci_hp_stop();
+	cpci_hp_unregister_bus(bus0);
+	cpci_hp_unregister_controller(&zt5550_hpc);
+	zt5550_hc_cleanup();
+}
+
+
+static const struct pci_device_id zt5550_hc_pci_tbl[] = {
+	{ PCI_VENDOR_ID_ZIATECH, PCI_DEVICE_ID_ZIATECH_5550_HC, PCI_ANY_ID, PCI_ANY_ID, },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, zt5550_hc_pci_tbl);
+
+static struct pci_driver zt5550_hc_driver = {
+	.name		= "zt5550_hc",
+	.id_table	= zt5550_hc_pci_tbl,
+	.probe		= zt5550_hc_init_one,
+	.remove		= zt5550_hc_remove_one,
+};
+
+static int __init zt5550_init(void)
+{
+	struct resource *r;
+	int rc;
+
+	info(DRIVER_DESC " version: " DRIVER_VERSION);
+	r = request_region(ENUM_PORT, 1, "#ENUM hotswap signal register");
+	if (!r)
+		return -EBUSY;
+
+	rc = pci_register_driver(&zt5550_hc_driver);
+	if (rc < 0)
+		release_region(ENUM_PORT, 1);
+	return rc;
+}
+
+static void __exit
+zt5550_exit(void)
+{
+	pci_unregister_driver(&zt5550_hc_driver);
+	release_region(ENUM_PORT, 1);
+}
+
+module_init(zt5550_init);
+module_exit(zt5550_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+module_param(debug, bool, 0644);
+MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
+module_param(poll, bool, 0644);
+MODULE_PARM_DESC(poll, "#ENUM polling mode enabled or not");