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, 205 insertions, 0 deletions

diff --git a/drivers/watchdog/advantech_ec_wdt.c b/drivers/watchdog/advantech_ec_wdt.c
new file mode 100644
index 000000000..7c380f90c
--- /dev/null
+++ b/drivers/watchdog/advantech_ec_wdt.c
@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	Advantech Embedded Controller Watchdog Driver
+ *
+ *	This driver supports Advantech products with ITE based Embedded Controller.
+ *	It does not support Advantech products with other ECs or without EC.
+ *
+ *	Copyright (C) 2022 Advantech Europe B.V.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/isa.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/watchdog.h>
+
+#define DRIVER_NAME		"advantech_ec_wdt"
+
+/* EC IO region */
+#define EC_BASE_ADDR		0x299
+#define EC_ADDR_EXTENT		2
+
+/* EC minimum IO access delay in ms */
+#define EC_MIN_DELAY		10
+
+/* EC interface definitions */
+#define EC_ADDR_CMD		(EC_BASE_ADDR + 1)
+#define EC_ADDR_DATA		EC_BASE_ADDR
+#define EC_CMD_EC_PROBE		0x30
+#define EC_CMD_COMM		0x89
+#define EC_CMD_WDT_START	0x28
+#define EC_CMD_WDT_STOP		0x29
+#define EC_CMD_WDT_RESET	0x2A
+#define EC_DAT_EN_DLY_H		0x58
+#define EC_DAT_EN_DLY_L		0x59
+#define EC_DAT_RST_DLY_H	0x5E
+#define EC_DAT_RST_DLY_L	0x5F
+#define EC_MAGIC		0x95
+
+/* module parameters */
+#define MIN_TIME		1
+#define MAX_TIME		6000 /* 100 minutes */
+#define DEFAULT_TIME		60
+
+static unsigned int timeout;
+static ktime_t ec_timestamp;
+
+module_param(timeout, uint, 0);
+MODULE_PARM_DESC(timeout,
+		 "Default Watchdog timer setting (" __MODULE_STRING(DEFAULT_TIME) "s). The range is from " __MODULE_STRING(MIN_TIME) " to " __MODULE_STRING(MAX_TIME) ".");
+
+static void adv_ec_wdt_timing_gate(void)
+{
+	ktime_t time_cur, time_delta;
+
+	/* ensure minimum delay between IO accesses*/
+	time_cur = ktime_get();
+	time_delta = ktime_to_ms(ktime_sub(time_cur, ec_timestamp));
+	if (time_delta < EC_MIN_DELAY) {
+		time_delta = EC_MIN_DELAY - time_delta;
+		usleep_range(time_delta * 1000, (time_delta + 1) * 1000);
+	}
+	ec_timestamp = ktime_get();
+}
+
+static void adv_ec_wdt_outb(unsigned char value, unsigned short port)
+{
+	adv_ec_wdt_timing_gate();
+	outb(value, port);
+}
+
+static unsigned char adv_ec_wdt_inb(unsigned short port)
+{
+	adv_ec_wdt_timing_gate();
+	return inb(port);
+}
+
+static int adv_ec_wdt_ping(struct watchdog_device *wdd)
+{
+	adv_ec_wdt_outb(EC_CMD_WDT_RESET, EC_ADDR_CMD);
+	return 0;
+}
+
+static int adv_ec_wdt_set_timeout(struct watchdog_device *wdd, unsigned int t)
+{
+	unsigned int val;
+
+	/* scale time to EC 100 ms base */
+	val = t * 10;
+
+	/* reset enable delay, just in case it was set by BIOS etc. */
+	adv_ec_wdt_outb(EC_CMD_COMM, EC_ADDR_CMD);
+	adv_ec_wdt_outb(EC_DAT_EN_DLY_H, EC_ADDR_DATA);
+	adv_ec_wdt_outb(0, EC_ADDR_DATA);
+
+	adv_ec_wdt_outb(EC_CMD_COMM, EC_ADDR_CMD);
+	adv_ec_wdt_outb(EC_DAT_EN_DLY_L, EC_ADDR_DATA);
+	adv_ec_wdt_outb(0, EC_ADDR_DATA);
+
+	/* set reset delay */
+	adv_ec_wdt_outb(EC_CMD_COMM, EC_ADDR_CMD);
+	adv_ec_wdt_outb(EC_DAT_RST_DLY_H, EC_ADDR_DATA);
+	adv_ec_wdt_outb(val >> 8, EC_ADDR_DATA);
+
+	adv_ec_wdt_outb(EC_CMD_COMM, EC_ADDR_CMD);
+	adv_ec_wdt_outb(EC_DAT_RST_DLY_L, EC_ADDR_DATA);
+	adv_ec_wdt_outb(val & 0xFF, EC_ADDR_DATA);
+
+	wdd->timeout = t;
+	return 0;
+}
+
+static int adv_ec_wdt_start(struct watchdog_device *wdd)
+{
+	adv_ec_wdt_set_timeout(wdd, wdd->timeout);
+	adv_ec_wdt_outb(EC_CMD_WDT_START, EC_ADDR_CMD);
+
+	return 0;
+}
+
+static int adv_ec_wdt_stop(struct watchdog_device *wdd)
+{
+	adv_ec_wdt_outb(EC_CMD_WDT_STOP, EC_ADDR_CMD);
+
+	return 0;
+}
+
+static const struct watchdog_info adv_ec_wdt_info = {
+	.identity =	DRIVER_NAME,
+	.options =	WDIOF_SETTIMEOUT |
+			WDIOF_MAGICCLOSE |
+			WDIOF_KEEPALIVEPING,
+};
+
+static const struct watchdog_ops adv_ec_wdt_ops = {
+	.owner =	THIS_MODULE,
+	.start =	adv_ec_wdt_start,
+	.stop =		adv_ec_wdt_stop,
+	.ping =		adv_ec_wdt_ping,
+	.set_timeout =	adv_ec_wdt_set_timeout,
+};
+
+static struct watchdog_device adv_ec_wdt_dev = {
+	.info =		&adv_ec_wdt_info,
+	.ops =		&adv_ec_wdt_ops,
+	.min_timeout =	MIN_TIME,
+	.max_timeout =	MAX_TIME,
+	.timeout =	DEFAULT_TIME,
+};
+
+static int adv_ec_wdt_probe(struct device *dev, unsigned int id)
+{
+	if (!devm_request_region(dev, EC_BASE_ADDR, EC_ADDR_EXTENT, dev_name(dev))) {
+		dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n",
+			EC_BASE_ADDR, EC_BASE_ADDR + EC_ADDR_EXTENT);
+		return -EBUSY;
+	}
+
+	watchdog_init_timeout(&adv_ec_wdt_dev, timeout, dev);
+	watchdog_stop_on_reboot(&adv_ec_wdt_dev);
+	watchdog_stop_on_unregister(&adv_ec_wdt_dev);
+
+	return devm_watchdog_register_device(dev, &adv_ec_wdt_dev);
+}
+
+static struct isa_driver adv_ec_wdt_driver = {
+	.probe		= adv_ec_wdt_probe,
+	.driver		= {
+	.name		= DRIVER_NAME,
+	},
+};
+
+static int __init adv_ec_wdt_init(void)
+{
+	unsigned int val;
+
+	/* quick probe for EC */
+	if (!request_region(EC_BASE_ADDR, EC_ADDR_EXTENT, DRIVER_NAME))
+		return -EBUSY;
+
+	adv_ec_wdt_outb(EC_CMD_EC_PROBE, EC_ADDR_CMD);
+	val = adv_ec_wdt_inb(EC_ADDR_DATA);
+	release_region(EC_BASE_ADDR, EC_ADDR_EXTENT);
+
+	if (val != EC_MAGIC)
+		return -ENODEV;
+
+	return isa_register_driver(&adv_ec_wdt_driver, 1);
+}
+
+static void __exit adv_ec_wdt_exit(void)
+{
+	isa_unregister_driver(&adv_ec_wdt_driver);
+}
+
+module_init(adv_ec_wdt_init);
+module_exit(adv_ec_wdt_exit);
+
+MODULE_AUTHOR("Thomas Kastner <thomas.kastner@advantech.com>");
+MODULE_DESCRIPTION("Advantech Embedded Controller Watchdog Device Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("20221019");
+MODULE_ALIAS("isa:" DRIVER_NAME);