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, 324 insertions, 0 deletions

diff --git a/drivers/soc/apple/apple-pmgr-pwrstate.c b/drivers/soc/apple/apple-pmgr-pwrstate.c
new file mode 100644
index 000000000..e11222884
--- /dev/null
+++ b/drivers/soc/apple/apple-pmgr-pwrstate.c
@@ -0,0 +1,324 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Apple SoC PMGR device power state driver
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <linux/reset-controller.h>
+#include <linux/module.h>
+
+#define APPLE_PMGR_RESET        BIT(31)
+#define APPLE_PMGR_AUTO_ENABLE  BIT(28)
+#define APPLE_PMGR_PS_AUTO      GENMASK(27, 24)
+#define APPLE_PMGR_PS_MIN       GENMASK(19, 16)
+#define APPLE_PMGR_PARENT_OFF   BIT(11)
+#define APPLE_PMGR_DEV_DISABLE  BIT(10)
+#define APPLE_PMGR_WAS_CLKGATED BIT(9)
+#define APPLE_PMGR_WAS_PWRGATED BIT(8)
+#define APPLE_PMGR_PS_ACTUAL    GENMASK(7, 4)
+#define APPLE_PMGR_PS_TARGET    GENMASK(3, 0)
+
+#define APPLE_PMGR_FLAGS        (APPLE_PMGR_WAS_CLKGATED | APPLE_PMGR_WAS_PWRGATED)
+
+#define APPLE_PMGR_PS_ACTIVE    0xf
+#define APPLE_PMGR_PS_CLKGATE   0x4
+#define APPLE_PMGR_PS_PWRGATE   0x0
+
+#define APPLE_PMGR_PS_SET_TIMEOUT 100
+#define APPLE_PMGR_RESET_TIME 1
+
+struct apple_pmgr_ps {
+	struct device *dev;
+	struct generic_pm_domain genpd;
+	struct reset_controller_dev rcdev;
+	struct regmap *regmap;
+	u32 offset;
+	u32 min_state;
+};
+
+#define genpd_to_apple_pmgr_ps(_genpd) container_of(_genpd, struct apple_pmgr_ps, genpd)
+#define rcdev_to_apple_pmgr_ps(_rcdev) container_of(_rcdev, struct apple_pmgr_ps, rcdev)
+
+static int apple_pmgr_ps_set(struct generic_pm_domain *genpd, u32 pstate, bool auto_enable)
+{
+	int ret;
+	struct apple_pmgr_ps *ps = genpd_to_apple_pmgr_ps(genpd);
+	u32 reg;
+
+	ret = regmap_read(ps->regmap, ps->offset, &reg);
+	if (ret < 0)
+		return ret;
+
+	/* Resets are synchronous, and only work if the device is powered and clocked. */
+	if (reg & APPLE_PMGR_RESET && pstate != APPLE_PMGR_PS_ACTIVE)
+		dev_err(ps->dev, "PS %s: powering off with RESET active\n",
+			genpd->name);
+
+	reg &= ~(APPLE_PMGR_AUTO_ENABLE | APPLE_PMGR_FLAGS | APPLE_PMGR_PS_TARGET);
+	reg |= FIELD_PREP(APPLE_PMGR_PS_TARGET, pstate);
+
+	dev_dbg(ps->dev, "PS %s: pwrstate = 0x%x: 0x%x\n", genpd->name, pstate, reg);
+
+	regmap_write(ps->regmap, ps->offset, reg);
+
+	ret = regmap_read_poll_timeout_atomic(
+		ps->regmap, ps->offset, reg,
+		(FIELD_GET(APPLE_PMGR_PS_ACTUAL, reg) == pstate), 1,
+		APPLE_PMGR_PS_SET_TIMEOUT);
+	if (ret < 0)
+		dev_err(ps->dev, "PS %s: Failed to reach power state 0x%x (now: 0x%x)\n",
+			genpd->name, pstate, reg);
+
+	if (auto_enable) {
+		/* Not all devices implement this; this is a no-op where not implemented. */
+		reg &= ~APPLE_PMGR_FLAGS;
+		reg |= APPLE_PMGR_AUTO_ENABLE;
+		regmap_write(ps->regmap, ps->offset, reg);
+	}
+
+	return ret;
+}
+
+static bool apple_pmgr_ps_is_active(struct apple_pmgr_ps *ps)
+{
+	u32 reg = 0;
+
+	regmap_read(ps->regmap, ps->offset, &reg);
+	/*
+	 * We consider domains as active if they are actually on, or if they have auto-PM
+	 * enabled and the intended target is on.
+	 */
+	return (FIELD_GET(APPLE_PMGR_PS_ACTUAL, reg) == APPLE_PMGR_PS_ACTIVE ||
+		(FIELD_GET(APPLE_PMGR_PS_TARGET, reg) == APPLE_PMGR_PS_ACTIVE &&
+		 reg & APPLE_PMGR_AUTO_ENABLE));
+}
+
+static int apple_pmgr_ps_power_on(struct generic_pm_domain *genpd)
+{
+	return apple_pmgr_ps_set(genpd, APPLE_PMGR_PS_ACTIVE, true);
+}
+
+static int apple_pmgr_ps_power_off(struct generic_pm_domain *genpd)
+{
+	return apple_pmgr_ps_set(genpd, APPLE_PMGR_PS_PWRGATE, false);
+}
+
+static int apple_pmgr_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+
+	mutex_lock(&ps->genpd.mlock);
+
+	if (ps->genpd.status == GENPD_STATE_OFF)
+		dev_err(ps->dev, "PS 0x%x: asserting RESET while powered down\n", ps->offset);
+
+	dev_dbg(ps->dev, "PS 0x%x: assert reset\n", ps->offset);
+	/* Quiesce device before asserting reset */
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_DEV_DISABLE,
+			   APPLE_PMGR_DEV_DISABLE);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_RESET,
+			   APPLE_PMGR_RESET);
+
+	mutex_unlock(&ps->genpd.mlock);
+
+	return 0;
+}
+
+static int apple_pmgr_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+
+	mutex_lock(&ps->genpd.mlock);
+
+	dev_dbg(ps->dev, "PS 0x%x: deassert reset\n", ps->offset);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_RESET, 0);
+	regmap_update_bits(ps->regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_DEV_DISABLE, 0);
+
+	if (ps->genpd.status == GENPD_STATE_OFF)
+		dev_err(ps->dev, "PS 0x%x: RESET was deasserted while powered down\n", ps->offset);
+
+	mutex_unlock(&ps->genpd.mlock);
+
+	return 0;
+}
+
+static int apple_pmgr_reset_reset(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	int ret;
+
+	ret = apple_pmgr_reset_assert(rcdev, id);
+	if (ret)
+		return ret;
+
+	usleep_range(APPLE_PMGR_RESET_TIME, 2 * APPLE_PMGR_RESET_TIME);
+
+	return apple_pmgr_reset_deassert(rcdev, id);
+}
+
+static int apple_pmgr_reset_status(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	struct apple_pmgr_ps *ps = rcdev_to_apple_pmgr_ps(rcdev);
+	u32 reg = 0;
+
+	regmap_read(ps->regmap, ps->offset, &reg);
+
+	return !!(reg & APPLE_PMGR_RESET);
+}
+
+const struct reset_control_ops apple_pmgr_reset_ops = {
+	.assert		= apple_pmgr_reset_assert,
+	.deassert	= apple_pmgr_reset_deassert,
+	.reset		= apple_pmgr_reset_reset,
+	.status		= apple_pmgr_reset_status,
+};
+
+static int apple_pmgr_reset_xlate(struct reset_controller_dev *rcdev,
+				  const struct of_phandle_args *reset_spec)
+{
+	return 0;
+}
+
+static int apple_pmgr_ps_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->of_node;
+	struct apple_pmgr_ps *ps;
+	struct regmap *regmap;
+	struct of_phandle_iterator it;
+	int ret;
+	const char *name;
+	bool active;
+
+	regmap = syscon_node_to_regmap(node->parent);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	ps = devm_kzalloc(dev, sizeof(*ps), GFP_KERNEL);
+	if (!ps)
+		return -ENOMEM;
+
+	ps->dev = dev;
+	ps->regmap = regmap;
+
+	ret = of_property_read_string(node, "label", &name);
+	if (ret < 0) {
+		dev_err(dev, "missing label property\n");
+		return ret;
+	}
+
+	ret = of_property_read_u32(node, "reg", &ps->offset);
+	if (ret < 0) {
+		dev_err(dev, "missing reg property\n");
+		return ret;
+	}
+
+	ps->genpd.name = name;
+	ps->genpd.power_on = apple_pmgr_ps_power_on;
+	ps->genpd.power_off = apple_pmgr_ps_power_off;
+
+	ret = of_property_read_u32(node, "apple,min-state", &ps->min_state);
+	if (ret == 0 && ps->min_state <= APPLE_PMGR_PS_ACTIVE)
+		regmap_update_bits(regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_PS_MIN,
+				   FIELD_PREP(APPLE_PMGR_PS_MIN, ps->min_state));
+
+	active = apple_pmgr_ps_is_active(ps);
+	if (of_property_read_bool(node, "apple,always-on")) {
+		ps->genpd.flags |= GENPD_FLAG_ALWAYS_ON;
+		if (!active) {
+			dev_warn(dev, "always-on domain %s is not on at boot\n", name);
+			/* Turn it on so pm_genpd_init does not fail */
+			active = apple_pmgr_ps_power_on(&ps->genpd) == 0;
+		}
+	}
+
+	/* Turn on auto-PM if the domain is already on */
+	if (active)
+		regmap_update_bits(regmap, ps->offset, APPLE_PMGR_FLAGS | APPLE_PMGR_AUTO_ENABLE,
+				   APPLE_PMGR_AUTO_ENABLE);
+
+	ret = pm_genpd_init(&ps->genpd, NULL, !active);
+	if (ret < 0) {
+		dev_err(dev, "pm_genpd_init failed\n");
+		return ret;
+	}
+
+	ret = of_genpd_add_provider_simple(node, &ps->genpd);
+	if (ret < 0) {
+		dev_err(dev, "of_genpd_add_provider_simple failed\n");
+		return ret;
+	}
+
+	of_for_each_phandle(&it, ret, node, "power-domains", "#power-domain-cells", -1) {
+		struct of_phandle_args parent, child;
+
+		parent.np = it.node;
+		parent.args_count = of_phandle_iterator_args(&it, parent.args, MAX_PHANDLE_ARGS);
+		child.np = node;
+		child.args_count = 0;
+		ret = of_genpd_add_subdomain(&parent, &child);
+
+		if (ret == -EPROBE_DEFER) {
+			of_node_put(parent.np);
+			goto err_remove;
+		} else if (ret < 0) {
+			dev_err(dev, "failed to add to parent domain: %d (%s -> %s)\n",
+				ret, it.node->name, node->name);
+			of_node_put(parent.np);
+			goto err_remove;
+		}
+	}
+
+	/*
+	 * Do not participate in regular PM; parent power domains are handled via the
+	 * genpd hierarchy.
+	 */
+	pm_genpd_remove_device(dev);
+
+	ps->rcdev.owner = THIS_MODULE;
+	ps->rcdev.nr_resets = 1;
+	ps->rcdev.ops = &apple_pmgr_reset_ops;
+	ps->rcdev.of_node = dev->of_node;
+	ps->rcdev.of_reset_n_cells = 0;
+	ps->rcdev.of_xlate = apple_pmgr_reset_xlate;
+
+	ret = devm_reset_controller_register(dev, &ps->rcdev);
+	if (ret < 0)
+		goto err_remove;
+
+	return 0;
+err_remove:
+	of_genpd_del_provider(node);
+	pm_genpd_remove(&ps->genpd);
+	return ret;
+}
+
+static const struct of_device_id apple_pmgr_ps_of_match[] = {
+	{ .compatible = "apple,pmgr-pwrstate" },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, apple_pmgr_ps_of_match);
+
+static struct platform_driver apple_pmgr_ps_driver = {
+	.probe = apple_pmgr_ps_probe,
+	.driver = {
+		.name = "apple-pmgr-pwrstate",
+		.of_match_table = apple_pmgr_ps_of_match,
+	},
+};
+
+MODULE_AUTHOR("Hector Martin <marcan@marcan.st>");
+MODULE_DESCRIPTION("PMGR power state driver for Apple SoCs");
+MODULE_LICENSE("GPL v2");
+
+module_platform_driver(apple_pmgr_ps_driver);