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, 373 insertions, 0 deletions

diff --git a/drivers/net/can/cc770/cc770_isa.c b/drivers/net/can/cc770/cc770_isa.c
new file mode 100644
index 000000000..8f6dccd5a
--- /dev/null
+++ b/drivers/net/can/cc770/cc770_isa.c
@@ -0,0 +1,373 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for CC770 and AN82527 CAN controllers on the legacy ISA bus
+ *
+ * Copyright (C) 2009, 2011 Wolfgang Grandegger <wg@grandegger.com>
+ */
+
+/*
+ * Bosch CC770 and Intel AN82527 CAN controllers on the ISA or PC-104 bus.
+ * The I/O port or memory address and the IRQ number must be specified via
+ * module parameters:
+ *
+ *   insmod cc770_isa.ko port=0x310,0x380 irq=7,11
+ *
+ * for ISA devices using I/O ports or:
+ *
+ *   insmod cc770_isa.ko mem=0xd1000,0xd1000 irq=7,11
+ *
+ * for memory mapped ISA devices.
+ *
+ * Indirect access via address and data port is supported as well:
+ *
+ *   insmod cc770_isa.ko port=0x310,0x380 indirect=1 irq=7,11
+ *
+ * Furthermore, the following mode parameter can be defined:
+ *
+ *   clk: External oscillator clock frequency (default=16000000 [16 MHz])
+ *   cir: CPU interface register (default=0x40 [DSC])
+ *   bcr: Bus configuration register (default=0x40 [CBY])
+ *   cor: Clockout register (default=0x00)
+ *
+ * Note: for clk, cir, bcr and cor, the first argument re-defines the
+ * default for all other devices, e.g.:
+ *
+ *   insmod cc770_isa.ko mem=0xd1000,0xd1000 irq=7,11 clk=24000000
+ *
+ * is equivalent to
+ *
+ *   insmod cc770_isa.ko mem=0xd1000,0xd1000 irq=7,11 clk=24000000,24000000
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/can.h>
+#include <linux/can/dev.h>
+#include <linux/can/platform/cc770.h>
+
+#include "cc770.h"
+
+#define MAXDEV 8
+
+MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
+MODULE_DESCRIPTION("Socket-CAN driver for CC770 on the ISA bus");
+MODULE_LICENSE("GPL v2");
+
+#define CLK_DEFAULT	16000000	/* 16 MHz */
+#define COR_DEFAULT	0x00
+#define BCR_DEFAULT	BUSCFG_CBY
+
+static unsigned long port[MAXDEV];
+static unsigned long mem[MAXDEV];
+static int irq[MAXDEV];
+static int clk[MAXDEV];
+static u8 cir[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
+static u8 cor[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
+static u8 bcr[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff};
+static int indirect[MAXDEV] = {[0 ... (MAXDEV - 1)] = -1};
+
+module_param_hw_array(port, ulong, ioport, NULL, 0444);
+MODULE_PARM_DESC(port, "I/O port number");
+
+module_param_hw_array(mem, ulong, iomem, NULL, 0444);
+MODULE_PARM_DESC(mem, "I/O memory address");
+
+module_param_hw_array(indirect, int, ioport, NULL, 0444);
+MODULE_PARM_DESC(indirect, "Indirect access via address and data port");
+
+module_param_hw_array(irq, int, irq, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ number");
+
+module_param_array(clk, int, NULL, 0444);
+MODULE_PARM_DESC(clk, "External oscillator clock frequency "
+		 "(default=16000000 [16 MHz])");
+
+module_param_array(cir, byte, NULL, 0444);
+MODULE_PARM_DESC(cir, "CPU interface register (default=0x40 [DSC])");
+
+module_param_array(cor, byte, NULL, 0444);
+MODULE_PARM_DESC(cor, "Clockout register (default=0x00)");
+
+module_param_array(bcr, byte, NULL, 0444);
+MODULE_PARM_DESC(bcr, "Bus configuration register (default=0x40 [CBY])");
+
+#define CC770_IOSIZE          0x20
+#define CC770_IOSIZE_INDIRECT 0x02
+
+/* Spinlock for cc770_isa_port_write_reg_indirect
+ * and cc770_isa_port_read_reg_indirect
+ */
+static DEFINE_SPINLOCK(cc770_isa_port_lock);
+
+static struct platform_device *cc770_isa_devs[MAXDEV];
+
+static u8 cc770_isa_mem_read_reg(const struct cc770_priv *priv, int reg)
+{
+	return readb(priv->reg_base + reg);
+}
+
+static void cc770_isa_mem_write_reg(const struct cc770_priv *priv,
+				      int reg, u8 val)
+{
+	writeb(val, priv->reg_base + reg);
+}
+
+static u8 cc770_isa_port_read_reg(const struct cc770_priv *priv, int reg)
+{
+	return inb((unsigned long)priv->reg_base + reg);
+}
+
+static void cc770_isa_port_write_reg(const struct cc770_priv *priv,
+				       int reg, u8 val)
+{
+	outb(val, (unsigned long)priv->reg_base + reg);
+}
+
+static u8 cc770_isa_port_read_reg_indirect(const struct cc770_priv *priv,
+					     int reg)
+{
+	unsigned long base = (unsigned long)priv->reg_base;
+	unsigned long flags;
+	u8 val;
+
+	spin_lock_irqsave(&cc770_isa_port_lock, flags);
+	outb(reg, base);
+	val = inb(base + 1);
+	spin_unlock_irqrestore(&cc770_isa_port_lock, flags);
+
+	return val;
+}
+
+static void cc770_isa_port_write_reg_indirect(const struct cc770_priv *priv,
+						int reg, u8 val)
+{
+	unsigned long base = (unsigned long)priv->reg_base;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cc770_isa_port_lock, flags);
+	outb(reg, base);
+	outb(val, base + 1);
+	spin_unlock_irqrestore(&cc770_isa_port_lock, flags);
+}
+
+static int cc770_isa_probe(struct platform_device *pdev)
+{
+	struct net_device *dev;
+	struct cc770_priv *priv;
+	void __iomem *base = NULL;
+	int iosize = CC770_IOSIZE;
+	int idx = pdev->id;
+	int err;
+	u32 clktmp;
+
+	dev_dbg(&pdev->dev, "probing idx=%d: port=%#lx, mem=%#lx, irq=%d\n",
+		idx, port[idx], mem[idx], irq[idx]);
+	if (mem[idx]) {
+		if (!request_mem_region(mem[idx], iosize, KBUILD_MODNAME)) {
+			err = -EBUSY;
+			goto exit;
+		}
+		base = ioremap(mem[idx], iosize);
+		if (!base) {
+			err = -ENOMEM;
+			goto exit_release;
+		}
+	} else {
+		if (indirect[idx] > 0 ||
+		    (indirect[idx] == -1 && indirect[0] > 0))
+			iosize = CC770_IOSIZE_INDIRECT;
+		if (!request_region(port[idx], iosize, KBUILD_MODNAME)) {
+			err = -EBUSY;
+			goto exit;
+		}
+	}
+
+	dev = alloc_cc770dev(0);
+	if (!dev) {
+		err = -ENOMEM;
+		goto exit_unmap;
+	}
+	priv = netdev_priv(dev);
+
+	dev->irq = irq[idx];
+	priv->irq_flags = IRQF_SHARED;
+	if (mem[idx]) {
+		priv->reg_base = base;
+		dev->base_addr = mem[idx];
+		priv->read_reg = cc770_isa_mem_read_reg;
+		priv->write_reg = cc770_isa_mem_write_reg;
+	} else {
+		priv->reg_base = (void __iomem *)port[idx];
+		dev->base_addr = port[idx];
+
+		if (iosize == CC770_IOSIZE_INDIRECT) {
+			priv->read_reg = cc770_isa_port_read_reg_indirect;
+			priv->write_reg = cc770_isa_port_write_reg_indirect;
+		} else {
+			priv->read_reg = cc770_isa_port_read_reg;
+			priv->write_reg = cc770_isa_port_write_reg;
+		}
+	}
+
+	if (clk[idx])
+		clktmp = clk[idx];
+	else if (clk[0])
+		clktmp = clk[0];
+	else
+		clktmp = CLK_DEFAULT;
+	priv->can.clock.freq = clktmp;
+
+	if (cir[idx] != 0xff) {
+		priv->cpu_interface = cir[idx];
+	} else if (cir[0] != 0xff) {
+		priv->cpu_interface = cir[0];
+	} else {
+		/* The system clock may not exceed 10 MHz */
+		if (clktmp > 10000000) {
+			priv->cpu_interface |= CPUIF_DSC;
+			clktmp /= 2;
+		}
+		/* The memory clock may not exceed 8 MHz */
+		if (clktmp > 8000000)
+			priv->cpu_interface |= CPUIF_DMC;
+	}
+
+	if (priv->cpu_interface & CPUIF_DSC)
+		priv->can.clock.freq /= 2;
+
+	if (bcr[idx] != 0xff)
+		priv->bus_config = bcr[idx];
+	else if (bcr[0] != 0xff)
+		priv->bus_config = bcr[0];
+	else
+		priv->bus_config = BCR_DEFAULT;
+
+	if (cor[idx] != 0xff)
+		priv->clkout = cor[idx];
+	else if (cor[0] != 0xff)
+		priv->clkout = cor[0];
+	else
+		priv->clkout = COR_DEFAULT;
+
+	platform_set_drvdata(pdev, dev);
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	err = register_cc770dev(dev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"couldn't register device (err=%d)\n", err);
+		goto exit_free;
+	}
+
+	dev_info(&pdev->dev, "device registered (reg_base=0x%p, irq=%d)\n",
+		 priv->reg_base, dev->irq);
+	return 0;
+
+exit_free:
+	free_cc770dev(dev);
+exit_unmap:
+	if (mem[idx])
+		iounmap(base);
+exit_release:
+	if (mem[idx])
+		release_mem_region(mem[idx], iosize);
+	else
+		release_region(port[idx], iosize);
+exit:
+	return err;
+}
+
+static int cc770_isa_remove(struct platform_device *pdev)
+{
+	struct net_device *dev = platform_get_drvdata(pdev);
+	struct cc770_priv *priv = netdev_priv(dev);
+	int idx = pdev->id;
+
+	unregister_cc770dev(dev);
+
+	if (mem[idx]) {
+		iounmap(priv->reg_base);
+		release_mem_region(mem[idx], CC770_IOSIZE);
+	} else {
+		if (priv->read_reg == cc770_isa_port_read_reg_indirect)
+			release_region(port[idx], CC770_IOSIZE_INDIRECT);
+		else
+			release_region(port[idx], CC770_IOSIZE);
+	}
+	free_cc770dev(dev);
+
+	return 0;
+}
+
+static struct platform_driver cc770_isa_driver = {
+	.probe = cc770_isa_probe,
+	.remove = cc770_isa_remove,
+	.driver = {
+		.name = KBUILD_MODNAME,
+	},
+};
+
+static int __init cc770_isa_init(void)
+{
+	int idx, err;
+
+	for (idx = 0; idx < ARRAY_SIZE(cc770_isa_devs); idx++) {
+		if ((port[idx] || mem[idx]) && irq[idx]) {
+			cc770_isa_devs[idx] =
+				platform_device_alloc(KBUILD_MODNAME, idx);
+			if (!cc770_isa_devs[idx]) {
+				err = -ENOMEM;
+				goto exit_free_devices;
+			}
+			err = platform_device_add(cc770_isa_devs[idx]);
+			if (err) {
+				platform_device_put(cc770_isa_devs[idx]);
+				goto exit_free_devices;
+			}
+			pr_debug("platform device %d: port=%#lx, mem=%#lx, "
+				 "irq=%d\n",
+				 idx, port[idx], mem[idx], irq[idx]);
+		} else if (idx == 0 || port[idx] || mem[idx]) {
+			pr_err("insufficient parameters supplied\n");
+			err = -EINVAL;
+			goto exit_free_devices;
+		}
+	}
+
+	err = platform_driver_register(&cc770_isa_driver);
+	if (err)
+		goto exit_free_devices;
+
+	pr_info("driver for max. %d devices registered\n", MAXDEV);
+
+	return 0;
+
+exit_free_devices:
+	while (--idx >= 0) {
+		if (cc770_isa_devs[idx])
+			platform_device_unregister(cc770_isa_devs[idx]);
+	}
+
+	return err;
+}
+module_init(cc770_isa_init);
+
+static void __exit cc770_isa_exit(void)
+{
+	int idx;
+
+	platform_driver_unregister(&cc770_isa_driver);
+	for (idx = 0; idx < ARRAY_SIZE(cc770_isa_devs); idx++) {
+		if (cc770_isa_devs[idx])
+			platform_device_unregister(cc770_isa_devs[idx]);
+	}
+}
+module_exit(cc770_isa_exit);