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, 450 insertions, 0 deletions

diff --git a/drivers/watchdog/it8712f_wdt.c b/drivers/watchdog/it8712f_wdt.c
new file mode 100644
index 000000000..3ce6a58bd
--- /dev/null
+++ b/drivers/watchdog/it8712f_wdt.c
@@ -0,0 +1,450 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *	IT8712F "Smart Guardian" Watchdog support
+ *
+ *	Copyright (c) 2006-2007 Jorge Boncompte - DTI2 <jorge@dti2.net>
+ *
+ *	Based on info and code taken from:
+ *
+ *	drivers/char/watchdog/scx200_wdt.c
+ *	drivers/hwmon/it87.c
+ *	IT8712F EC-LPC I/O Preliminary Specification 0.8.2
+ *	IT8712F EC-LPC I/O Preliminary Specification 0.9.3
+ *
+ *	The author(s) of this software shall not be held liable for damages
+ *	of any nature resulting due to the use of this software. This
+ *	software is provided AS-IS with no warranties.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/fs.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+
+#define NAME "it8712f_wdt"
+
+MODULE_AUTHOR("Jorge Boncompte - DTI2 <jorge@dti2.net>");
+MODULE_DESCRIPTION("IT8712F Watchdog Driver");
+MODULE_LICENSE("GPL");
+
+static int max_units = 255;
+static int margin = 60;		/* in seconds */
+module_param(margin, int, 0);
+MODULE_PARM_DESC(margin, "Watchdog margin in seconds");
+
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
+
+static unsigned long wdt_open;
+static unsigned expect_close;
+static unsigned char revision;
+
+/* Dog Food address - We use the game port address */
+static unsigned short address;
+
+#define	REG		0x2e	/* The register to read/write */
+#define	VAL		0x2f	/* The value to read/write */
+
+#define	LDN		0x07	/* Register: Logical device select */
+#define	DEVID		0x20	/* Register: Device ID */
+#define	DEVREV		0x22	/* Register: Device Revision */
+#define ACT_REG		0x30	/* LDN Register: Activation */
+#define BASE_REG	0x60	/* LDN Register: Base address */
+
+#define IT8712F_DEVID	0x8712
+
+#define LDN_GPIO	0x07	/* GPIO and Watch Dog Timer */
+#define LDN_GAME	0x09	/* Game Port */
+
+#define WDT_CONTROL	0x71	/* WDT Register: Control */
+#define WDT_CONFIG	0x72	/* WDT Register: Configuration */
+#define WDT_TIMEOUT	0x73	/* WDT Register: Timeout Value */
+
+#define WDT_RESET_GAME	0x10	/* Reset timer on read or write to game port */
+#define WDT_RESET_KBD	0x20	/* Reset timer on keyboard interrupt */
+#define WDT_RESET_MOUSE	0x40	/* Reset timer on mouse interrupt */
+#define WDT_RESET_CIR	0x80	/* Reset timer on consumer IR interrupt */
+
+#define WDT_UNIT_SEC	0x80	/* If 0 in MINUTES */
+
+#define WDT_OUT_PWROK	0x10	/* Pulse PWROK on timeout */
+#define WDT_OUT_KRST	0x40	/* Pulse reset on timeout */
+
+static int wdt_control_reg = WDT_RESET_GAME;
+module_param(wdt_control_reg, int, 0);
+MODULE_PARM_DESC(wdt_control_reg, "Value to write to watchdog control "
+		"register. The default WDT_RESET_GAME resets the timer on "
+		"game port reads that this driver generates. You can also "
+		"use KBD, MOUSE or CIR if you have some external way to "
+		"generate those interrupts.");
+
+static int superio_inb(int reg)
+{
+	outb(reg, REG);
+	return inb(VAL);
+}
+
+static void superio_outb(int val, int reg)
+{
+	outb(reg, REG);
+	outb(val, VAL);
+}
+
+static int superio_inw(int reg)
+{
+	int val;
+	outb(reg++, REG);
+	val = inb(VAL) << 8;
+	outb(reg, REG);
+	val |= inb(VAL);
+	return val;
+}
+
+static inline void superio_select(int ldn)
+{
+	outb(LDN, REG);
+	outb(ldn, VAL);
+}
+
+static inline int superio_enter(void)
+{
+	/*
+	 * Try to reserve REG and REG + 1 for exclusive access.
+	 */
+	if (!request_muxed_region(REG, 2, NAME))
+		return -EBUSY;
+
+	outb(0x87, REG);
+	outb(0x01, REG);
+	outb(0x55, REG);
+	outb(0x55, REG);
+	return 0;
+}
+
+static inline void superio_exit(void)
+{
+	outb(0x02, REG);
+	outb(0x02, VAL);
+	release_region(REG, 2);
+}
+
+static inline void it8712f_wdt_ping(void)
+{
+	if (wdt_control_reg & WDT_RESET_GAME)
+		inb(address);
+}
+
+static void it8712f_wdt_update_margin(void)
+{
+	int config = WDT_OUT_KRST | WDT_OUT_PWROK;
+	int units = margin;
+
+	/* Switch to minutes precision if the configured margin
+	 * value does not fit within the register width.
+	 */
+	if (units <= max_units) {
+		config |= WDT_UNIT_SEC; /* else UNIT is MINUTES */
+		pr_info("timer margin %d seconds\n", units);
+	} else {
+		units /= 60;
+		pr_info("timer margin %d minutes\n", units);
+	}
+	superio_outb(config, WDT_CONFIG);
+
+	if (revision >= 0x08)
+		superio_outb(units >> 8, WDT_TIMEOUT + 1);
+	superio_outb(units, WDT_TIMEOUT);
+}
+
+static int it8712f_wdt_get_status(void)
+{
+	if (superio_inb(WDT_CONTROL) & 0x01)
+		return WDIOF_CARDRESET;
+	else
+		return 0;
+}
+
+static int it8712f_wdt_enable(void)
+{
+	int ret = superio_enter();
+	if (ret)
+		return ret;
+
+	pr_debug("enabling watchdog timer\n");
+	superio_select(LDN_GPIO);
+
+	superio_outb(wdt_control_reg, WDT_CONTROL);
+
+	it8712f_wdt_update_margin();
+
+	superio_exit();
+
+	it8712f_wdt_ping();
+
+	return 0;
+}
+
+static int it8712f_wdt_disable(void)
+{
+	int ret = superio_enter();
+	if (ret)
+		return ret;
+
+	pr_debug("disabling watchdog timer\n");
+	superio_select(LDN_GPIO);
+
+	superio_outb(0, WDT_CONFIG);
+	superio_outb(0, WDT_CONTROL);
+	if (revision >= 0x08)
+		superio_outb(0, WDT_TIMEOUT + 1);
+	superio_outb(0, WDT_TIMEOUT);
+
+	superio_exit();
+	return 0;
+}
+
+static int it8712f_wdt_notify(struct notifier_block *this,
+		    unsigned long code, void *unused)
+{
+	if (code == SYS_HALT || code == SYS_POWER_OFF)
+		if (!nowayout)
+			it8712f_wdt_disable();
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block it8712f_wdt_notifier = {
+	.notifier_call = it8712f_wdt_notify,
+};
+
+static ssize_t it8712f_wdt_write(struct file *file, const char __user *data,
+					size_t len, loff_t *ppos)
+{
+	/* check for a magic close character */
+	if (len) {
+		size_t i;
+
+		it8712f_wdt_ping();
+
+		expect_close = 0;
+		for (i = 0; i < len; ++i) {
+			char c;
+			if (get_user(c, data + i))
+				return -EFAULT;
+			if (c == 'V')
+				expect_close = 42;
+		}
+	}
+
+	return len;
+}
+
+static long it8712f_wdt_ioctl(struct file *file, unsigned int cmd,
+							unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	int __user *p = argp;
+	static const struct watchdog_info ident = {
+		.identity = "IT8712F Watchdog",
+		.firmware_version = 1,
+		.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
+						WDIOF_MAGICCLOSE,
+	};
+	int value;
+	int ret;
+
+	switch (cmd) {
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
+		return 0;
+	case WDIOC_GETSTATUS:
+		ret = superio_enter();
+		if (ret)
+			return ret;
+		superio_select(LDN_GPIO);
+
+		value = it8712f_wdt_get_status();
+
+		superio_exit();
+
+		return put_user(value, p);
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_KEEPALIVE:
+		it8712f_wdt_ping();
+		return 0;
+	case WDIOC_SETTIMEOUT:
+		if (get_user(value, p))
+			return -EFAULT;
+		if (value < 1)
+			return -EINVAL;
+		if (value > (max_units * 60))
+			return -EINVAL;
+		margin = value;
+		ret = superio_enter();
+		if (ret)
+			return ret;
+		superio_select(LDN_GPIO);
+
+		it8712f_wdt_update_margin();
+
+		superio_exit();
+		it8712f_wdt_ping();
+		fallthrough;
+	case WDIOC_GETTIMEOUT:
+		if (put_user(margin, p))
+			return -EFAULT;
+		return 0;
+	default:
+		return -ENOTTY;
+	}
+}
+
+static int it8712f_wdt_open(struct inode *inode, struct file *file)
+{
+	int ret;
+	/* only allow one at a time */
+	if (test_and_set_bit(0, &wdt_open))
+		return -EBUSY;
+
+	ret = it8712f_wdt_enable();
+	if (ret)
+		return ret;
+	return stream_open(inode, file);
+}
+
+static int it8712f_wdt_release(struct inode *inode, struct file *file)
+{
+	if (expect_close != 42) {
+		pr_warn("watchdog device closed unexpectedly, will not disable the watchdog timer\n");
+	} else if (!nowayout) {
+		if (it8712f_wdt_disable())
+			pr_warn("Watchdog disable failed\n");
+	}
+	expect_close = 0;
+	clear_bit(0, &wdt_open);
+
+	return 0;
+}
+
+static const struct file_operations it8712f_wdt_fops = {
+	.owner = THIS_MODULE,
+	.llseek = no_llseek,
+	.write = it8712f_wdt_write,
+	.unlocked_ioctl = it8712f_wdt_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
+	.open = it8712f_wdt_open,
+	.release = it8712f_wdt_release,
+};
+
+static struct miscdevice it8712f_wdt_miscdev = {
+	.minor = WATCHDOG_MINOR,
+	.name = "watchdog",
+	.fops = &it8712f_wdt_fops,
+};
+
+static int __init it8712f_wdt_find(unsigned short *address)
+{
+	int err = -ENODEV;
+	int chip_type;
+	int ret = superio_enter();
+	if (ret)
+		return ret;
+
+	chip_type = superio_inw(DEVID);
+	if (chip_type != IT8712F_DEVID)
+		goto exit;
+
+	superio_select(LDN_GAME);
+	superio_outb(1, ACT_REG);
+	if (!(superio_inb(ACT_REG) & 0x01)) {
+		pr_err("Device not activated, skipping\n");
+		goto exit;
+	}
+
+	*address = superio_inw(BASE_REG);
+	if (*address == 0) {
+		pr_err("Base address not set, skipping\n");
+		goto exit;
+	}
+
+	err = 0;
+	revision = superio_inb(DEVREV) & 0x0f;
+
+	/* Later revisions have 16-bit values per datasheet 0.9.1 */
+	if (revision >= 0x08)
+		max_units = 65535;
+
+	if (margin > (max_units * 60))
+		margin = (max_units * 60);
+
+	pr_info("Found IT%04xF chip revision %d - using DogFood address 0x%x\n",
+		chip_type, revision, *address);
+
+exit:
+	superio_exit();
+	return err;
+}
+
+static int __init it8712f_wdt_init(void)
+{
+	int err = 0;
+
+	if (it8712f_wdt_find(&address))
+		return -ENODEV;
+
+	if (!request_region(address, 1, "IT8712F Watchdog")) {
+		pr_warn("watchdog I/O region busy\n");
+		return -EBUSY;
+	}
+
+	err = it8712f_wdt_disable();
+	if (err) {
+		pr_err("unable to disable watchdog timer\n");
+		goto out;
+	}
+
+	err = register_reboot_notifier(&it8712f_wdt_notifier);
+	if (err) {
+		pr_err("unable to register reboot notifier\n");
+		goto out;
+	}
+
+	err = misc_register(&it8712f_wdt_miscdev);
+	if (err) {
+		pr_err("cannot register miscdev on minor=%d (err=%d)\n",
+		       WATCHDOG_MINOR, err);
+		goto reboot_out;
+	}
+
+	return 0;
+
+
+reboot_out:
+	unregister_reboot_notifier(&it8712f_wdt_notifier);
+out:
+	release_region(address, 1);
+	return err;
+}
+
+static void __exit it8712f_wdt_exit(void)
+{
+	misc_deregister(&it8712f_wdt_miscdev);
+	unregister_reboot_notifier(&it8712f_wdt_notifier);
+	release_region(address, 1);
+}
+
+module_init(it8712f_wdt_init);
+module_exit(it8712f_wdt_exit);