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, 288 insertions, 0 deletions

diff --git a/drivers/watchdog/lantiq_wdt.c b/drivers/watchdog/lantiq_wdt.c
new file mode 100644
index 000000000..6fab504af
--- /dev/null
+++ b/drivers/watchdog/lantiq_wdt.c
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ *  Copyright (C) 2010 John Crispin <john@phrozen.org>
+ *  Copyright (C) 2017 Hauke Mehrtens <hauke@hauke-m.de>
+ *  Based on EP93xx wdt driver
+ */
+
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/watchdog.h>
+#include <linux/of_platform.h>
+#include <linux/uaccess.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+
+#include <lantiq_soc.h>
+
+#define LTQ_XRX_RCU_RST_STAT		0x0014
+#define LTQ_XRX_RCU_RST_STAT_WDT	BIT(31)
+
+/* CPU0 Reset Source Register */
+#define LTQ_FALCON_SYS1_CPU0RS		0x0060
+/* reset cause mask */
+#define LTQ_FALCON_SYS1_CPU0RS_MASK	0x0007
+#define LTQ_FALCON_SYS1_CPU0RS_WDT	0x02
+
+/*
+ * Section 3.4 of the datasheet
+ * The password sequence protects the WDT control register from unintended
+ * write actions, which might cause malfunction of the WDT.
+ *
+ * essentially the following two magic passwords need to be written to allow
+ * IO access to the WDT core
+ */
+#define LTQ_WDT_CR_PW1		0x00BE0000
+#define LTQ_WDT_CR_PW2		0x00DC0000
+
+#define LTQ_WDT_CR		0x0		/* watchdog control register */
+#define  LTQ_WDT_CR_GEN		BIT(31)		/* enable bit */
+/* Pre-warning limit set to 1/16 of max WDT period */
+#define  LTQ_WDT_CR_PWL		(0x3 << 26)
+/* set clock divider to 0x40000 */
+#define  LTQ_WDT_CR_CLKDIV	(0x3 << 24)
+#define  LTQ_WDT_CR_PW_MASK	GENMASK(23, 16)	/* Password field */
+#define  LTQ_WDT_CR_MAX_TIMEOUT	((1 << 16) - 1)	/* The reload field is 16 bit */
+#define LTQ_WDT_SR		0x8		/* watchdog status register */
+#define  LTQ_WDT_SR_EN		BIT(31)		/* Enable */
+#define  LTQ_WDT_SR_VALUE_MASK	GENMASK(15, 0)	/* Timer value */
+
+#define LTQ_WDT_DIVIDER		0x40000
+
+static bool nowayout = WATCHDOG_NOWAYOUT;
+
+struct ltq_wdt_hw {
+	int (*bootstatus_get)(struct device *dev);
+};
+
+struct ltq_wdt_priv {
+	struct watchdog_device wdt;
+	void __iomem *membase;
+	unsigned long clk_rate;
+};
+
+static u32 ltq_wdt_r32(struct ltq_wdt_priv *priv, u32 offset)
+{
+	return __raw_readl(priv->membase + offset);
+}
+
+static void ltq_wdt_w32(struct ltq_wdt_priv *priv, u32 val, u32 offset)
+{
+	__raw_writel(val, priv->membase + offset);
+}
+
+static void ltq_wdt_mask(struct ltq_wdt_priv *priv, u32 clear, u32 set,
+			 u32 offset)
+{
+	u32 val = ltq_wdt_r32(priv, offset);
+
+	val &= ~(clear);
+	val |= set;
+	ltq_wdt_w32(priv, val, offset);
+}
+
+static struct ltq_wdt_priv *ltq_wdt_get_priv(struct watchdog_device *wdt)
+{
+	return container_of(wdt, struct ltq_wdt_priv, wdt);
+}
+
+static struct watchdog_info ltq_wdt_info = {
+	.options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
+		   WDIOF_CARDRESET,
+	.identity = "ltq_wdt",
+};
+
+static int ltq_wdt_start(struct watchdog_device *wdt)
+{
+	struct ltq_wdt_priv *priv = ltq_wdt_get_priv(wdt);
+	u32 timeout;
+
+	timeout = wdt->timeout * priv->clk_rate;
+
+	ltq_wdt_mask(priv, LTQ_WDT_CR_PW_MASK, LTQ_WDT_CR_PW1, LTQ_WDT_CR);
+	/* write the second magic plus the configuration and new timeout */
+	ltq_wdt_mask(priv, LTQ_WDT_CR_PW_MASK | LTQ_WDT_CR_MAX_TIMEOUT,
+		     LTQ_WDT_CR_GEN | LTQ_WDT_CR_PWL | LTQ_WDT_CR_CLKDIV |
+		     LTQ_WDT_CR_PW2 | timeout,
+		     LTQ_WDT_CR);
+
+	return 0;
+}
+
+static int ltq_wdt_stop(struct watchdog_device *wdt)
+{
+	struct ltq_wdt_priv *priv = ltq_wdt_get_priv(wdt);
+
+	ltq_wdt_mask(priv, LTQ_WDT_CR_PW_MASK, LTQ_WDT_CR_PW1, LTQ_WDT_CR);
+	ltq_wdt_mask(priv, LTQ_WDT_CR_GEN | LTQ_WDT_CR_PW_MASK,
+		     LTQ_WDT_CR_PW2, LTQ_WDT_CR);
+
+	return 0;
+}
+
+static int ltq_wdt_ping(struct watchdog_device *wdt)
+{
+	struct ltq_wdt_priv *priv = ltq_wdt_get_priv(wdt);
+	u32 timeout;
+
+	timeout = wdt->timeout * priv->clk_rate;
+
+	ltq_wdt_mask(priv, LTQ_WDT_CR_PW_MASK, LTQ_WDT_CR_PW1, LTQ_WDT_CR);
+	/* write the second magic plus the configuration and new timeout */
+	ltq_wdt_mask(priv, LTQ_WDT_CR_PW_MASK | LTQ_WDT_CR_MAX_TIMEOUT,
+		     LTQ_WDT_CR_PW2 | timeout, LTQ_WDT_CR);
+
+	return 0;
+}
+
+static unsigned int ltq_wdt_get_timeleft(struct watchdog_device *wdt)
+{
+	struct ltq_wdt_priv *priv = ltq_wdt_get_priv(wdt);
+	u64 timeout;
+
+	timeout = ltq_wdt_r32(priv, LTQ_WDT_SR) & LTQ_WDT_SR_VALUE_MASK;
+	return do_div(timeout, priv->clk_rate);
+}
+
+static const struct watchdog_ops ltq_wdt_ops = {
+	.owner		= THIS_MODULE,
+	.start		= ltq_wdt_start,
+	.stop		= ltq_wdt_stop,
+	.ping		= ltq_wdt_ping,
+	.get_timeleft	= ltq_wdt_get_timeleft,
+};
+
+static int ltq_wdt_xrx_bootstatus_get(struct device *dev)
+{
+	struct regmap *rcu_regmap;
+	u32 val;
+	int err;
+
+	rcu_regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "regmap");
+	if (IS_ERR(rcu_regmap))
+		return PTR_ERR(rcu_regmap);
+
+	err = regmap_read(rcu_regmap, LTQ_XRX_RCU_RST_STAT, &val);
+	if (err)
+		return err;
+
+	if (val & LTQ_XRX_RCU_RST_STAT_WDT)
+		return WDIOF_CARDRESET;
+
+	return 0;
+}
+
+static int ltq_wdt_falcon_bootstatus_get(struct device *dev)
+{
+	struct regmap *rcu_regmap;
+	u32 val;
+	int err;
+
+	rcu_regmap = syscon_regmap_lookup_by_phandle(dev->of_node,
+						     "lantiq,rcu");
+	if (IS_ERR(rcu_regmap))
+		return PTR_ERR(rcu_regmap);
+
+	err = regmap_read(rcu_regmap, LTQ_FALCON_SYS1_CPU0RS, &val);
+	if (err)
+		return err;
+
+	if ((val & LTQ_FALCON_SYS1_CPU0RS_MASK) == LTQ_FALCON_SYS1_CPU0RS_WDT)
+		return WDIOF_CARDRESET;
+
+	return 0;
+}
+
+static int ltq_wdt_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct ltq_wdt_priv *priv;
+	struct watchdog_device *wdt;
+	struct clk *clk;
+	const struct ltq_wdt_hw *ltq_wdt_hw;
+	int ret;
+	u32 status;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->membase = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->membase))
+		return PTR_ERR(priv->membase);
+
+	/* we do not need to enable the clock as it is always running */
+	clk = clk_get_io();
+	priv->clk_rate = clk_get_rate(clk) / LTQ_WDT_DIVIDER;
+	if (!priv->clk_rate) {
+		dev_err(dev, "clock rate less than divider %i\n",
+			LTQ_WDT_DIVIDER);
+		return -EINVAL;
+	}
+
+	wdt = &priv->wdt;
+	wdt->info		= &ltq_wdt_info;
+	wdt->ops		= &ltq_wdt_ops;
+	wdt->min_timeout	= 1;
+	wdt->max_timeout	= LTQ_WDT_CR_MAX_TIMEOUT / priv->clk_rate;
+	wdt->timeout		= wdt->max_timeout;
+	wdt->parent		= dev;
+
+	ltq_wdt_hw = of_device_get_match_data(dev);
+	if (ltq_wdt_hw && ltq_wdt_hw->bootstatus_get) {
+		ret = ltq_wdt_hw->bootstatus_get(dev);
+		if (ret >= 0)
+			wdt->bootstatus = ret;
+	}
+
+	watchdog_set_nowayout(wdt, nowayout);
+	watchdog_init_timeout(wdt, 0, dev);
+
+	status = ltq_wdt_r32(priv, LTQ_WDT_SR);
+	if (status & LTQ_WDT_SR_EN) {
+		/*
+		 * If the watchdog is already running overwrite it with our
+		 * new settings. Stop is not needed as the start call will
+		 * replace all settings anyway.
+		 */
+		ltq_wdt_start(wdt);
+		set_bit(WDOG_HW_RUNNING, &wdt->status);
+	}
+
+	return devm_watchdog_register_device(dev, wdt);
+}
+
+static const struct ltq_wdt_hw ltq_wdt_xrx100 = {
+	.bootstatus_get = ltq_wdt_xrx_bootstatus_get,
+};
+
+static const struct ltq_wdt_hw ltq_wdt_falcon = {
+	.bootstatus_get = ltq_wdt_falcon_bootstatus_get,
+};
+
+static const struct of_device_id ltq_wdt_match[] = {
+	{ .compatible = "lantiq,wdt", .data = NULL },
+	{ .compatible = "lantiq,xrx100-wdt", .data = &ltq_wdt_xrx100 },
+	{ .compatible = "lantiq,falcon-wdt", .data = &ltq_wdt_falcon },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ltq_wdt_match);
+
+static struct platform_driver ltq_wdt_driver = {
+	.probe = ltq_wdt_probe,
+	.driver = {
+		.name = "wdt",
+		.of_match_table = ltq_wdt_match,
+	},
+};
+
+module_platform_driver(ltq_wdt_driver);
+
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
+MODULE_AUTHOR("John Crispin <john@phrozen.org>");
+MODULE_DESCRIPTION("Lantiq SoC Watchdog");
+MODULE_LICENSE("GPL");