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, 349 insertions, 0 deletions

diff --git a/drivers/leds/leds-powernv.c b/drivers/leds/leds-powernv.c
new file mode 100644
index 000000000..743e2cdd0
--- /dev/null
+++ b/drivers/leds/leds-powernv.c
@@ -0,0 +1,349 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PowerNV LED Driver
+ *
+ * Copyright IBM Corp. 2015
+ *
+ * Author: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
+ * Author: Anshuman Khandual <khandual@linux.vnet.ibm.com>
+ */
+
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <asm/opal.h>
+
+/* Map LED type to description. */
+struct led_type_map {
+	const int	type;
+	const char	*desc;
+};
+static const struct led_type_map led_type_map[] = {
+	{OPAL_SLOT_LED_TYPE_ID,		"identify"},
+	{OPAL_SLOT_LED_TYPE_FAULT,	"fault"},
+	{OPAL_SLOT_LED_TYPE_ATTN,	"attention"},
+	{-1,				NULL},
+};
+
+struct powernv_led_common {
+	/*
+	 * By default unload path resets all the LEDs. But on PowerNV
+	 * platform we want to retain LED state across reboot as these
+	 * are controlled by firmware. Also service processor can modify
+	 * the LEDs independent of OS. Hence avoid resetting LEDs in
+	 * unload path.
+	 */
+	bool		led_disabled;
+
+	/* Max supported LED type */
+	__be64		max_led_type;
+
+	/* glabal lock */
+	struct mutex	lock;
+};
+
+/* PowerNV LED data */
+struct powernv_led_data {
+	struct led_classdev	cdev;
+	char			*loc_code;	/* LED location code */
+	int			led_type;	/* OPAL_SLOT_LED_TYPE_* */
+
+	struct powernv_led_common *common;
+};
+
+
+/* Returns OPAL_SLOT_LED_TYPE_* for given led type string */
+static int powernv_get_led_type(const char *led_type_desc)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(led_type_map); i++)
+		if (!strcmp(led_type_map[i].desc, led_type_desc))
+			return led_type_map[i].type;
+
+	return -1;
+}
+
+/*
+ * This commits the state change of the requested LED through an OPAL call.
+ * This function is called from work queue task context when ever it gets
+ * scheduled. This function can sleep at opal_async_wait_response call.
+ */
+static int powernv_led_set(struct powernv_led_data *powernv_led,
+			    enum led_brightness value)
+{
+	int rc, token;
+	u64 led_mask, led_value = 0;
+	__be64 max_type;
+	struct opal_msg msg;
+	struct device *dev = powernv_led->cdev.dev;
+	struct powernv_led_common *powernv_led_common = powernv_led->common;
+
+	/* Prepare for the OPAL call */
+	max_type = powernv_led_common->max_led_type;
+	led_mask = OPAL_SLOT_LED_STATE_ON << powernv_led->led_type;
+	if (value)
+		led_value = led_mask;
+
+	/* OPAL async call */
+	token = opal_async_get_token_interruptible();
+	if (token < 0) {
+		if (token != -ERESTARTSYS)
+			dev_err(dev, "%s: Couldn't get OPAL async token\n",
+				__func__);
+		return token;
+	}
+
+	rc = opal_leds_set_ind(token, powernv_led->loc_code,
+			       led_mask, led_value, &max_type);
+	if (rc != OPAL_ASYNC_COMPLETION) {
+		dev_err(dev, "%s: OPAL set LED call failed for %s [rc=%d]\n",
+			__func__, powernv_led->loc_code, rc);
+		goto out_token;
+	}
+
+	rc = opal_async_wait_response(token, &msg);
+	if (rc) {
+		dev_err(dev,
+			"%s: Failed to wait for the async response [rc=%d]\n",
+			__func__, rc);
+		goto out_token;
+	}
+
+	rc = opal_get_async_rc(msg);
+	if (rc != OPAL_SUCCESS)
+		dev_err(dev, "%s : OAPL async call returned failed [rc=%d]\n",
+			__func__, rc);
+
+out_token:
+	opal_async_release_token(token);
+	return rc;
+}
+
+/*
+ * This function fetches the LED state for a given LED type for
+ * mentioned LED classdev structure.
+ */
+static enum led_brightness powernv_led_get(struct powernv_led_data *powernv_led)
+{
+	int rc;
+	__be64 mask, value, max_type;
+	u64 led_mask, led_value;
+	struct device *dev = powernv_led->cdev.dev;
+	struct powernv_led_common *powernv_led_common = powernv_led->common;
+
+	/* Fetch all LED status */
+	mask = cpu_to_be64(0);
+	value = cpu_to_be64(0);
+	max_type = powernv_led_common->max_led_type;
+
+	rc = opal_leds_get_ind(powernv_led->loc_code,
+			       &mask, &value, &max_type);
+	if (rc != OPAL_SUCCESS && rc != OPAL_PARTIAL) {
+		dev_err(dev, "%s: OPAL get led call failed [rc=%d]\n",
+			__func__, rc);
+		return LED_OFF;
+	}
+
+	led_mask = be64_to_cpu(mask);
+	led_value = be64_to_cpu(value);
+
+	/* LED status available */
+	if (!((led_mask >> powernv_led->led_type) & OPAL_SLOT_LED_STATE_ON)) {
+		dev_err(dev, "%s: LED status not available for %s\n",
+			__func__, powernv_led->cdev.name);
+		return LED_OFF;
+	}
+
+	/* LED status value */
+	if ((led_value >> powernv_led->led_type) & OPAL_SLOT_LED_STATE_ON)
+		return LED_FULL;
+
+	return LED_OFF;
+}
+
+/*
+ * LED classdev 'brightness_get' function. This schedules work
+ * to update LED state.
+ */
+static int powernv_brightness_set(struct led_classdev *led_cdev,
+				   enum led_brightness value)
+{
+	struct powernv_led_data *powernv_led =
+		container_of(led_cdev, struct powernv_led_data, cdev);
+	struct powernv_led_common *powernv_led_common = powernv_led->common;
+	int rc;
+
+	/* Do not modify LED in unload path */
+	if (powernv_led_common->led_disabled)
+		return 0;
+
+	mutex_lock(&powernv_led_common->lock);
+	rc = powernv_led_set(powernv_led, value);
+	mutex_unlock(&powernv_led_common->lock);
+
+	return rc;
+}
+
+/* LED classdev 'brightness_get' function */
+static enum led_brightness powernv_brightness_get(struct led_classdev *led_cdev)
+{
+	struct powernv_led_data *powernv_led =
+		container_of(led_cdev, struct powernv_led_data, cdev);
+
+	return powernv_led_get(powernv_led);
+}
+
+/*
+ * This function registers classdev structure for any given type of LED on
+ * a given child LED device node.
+ */
+static int powernv_led_create(struct device *dev,
+			      struct powernv_led_data *powernv_led,
+			      const char *led_type_desc)
+{
+	int rc;
+
+	/* Make sure LED type is supported */
+	powernv_led->led_type = powernv_get_led_type(led_type_desc);
+	if (powernv_led->led_type == -1) {
+		dev_warn(dev, "%s: No support for led type : %s\n",
+			 __func__, led_type_desc);
+		return -EINVAL;
+	}
+
+	/* Create the name for classdev */
+	powernv_led->cdev.name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s",
+						powernv_led->loc_code,
+						led_type_desc);
+	if (!powernv_led->cdev.name)
+		return -ENOMEM;
+
+	powernv_led->cdev.brightness_set_blocking = powernv_brightness_set;
+	powernv_led->cdev.brightness_get = powernv_brightness_get;
+	powernv_led->cdev.brightness = LED_OFF;
+	powernv_led->cdev.max_brightness = LED_FULL;
+
+	/* Register the classdev */
+	rc = devm_led_classdev_register(dev, &powernv_led->cdev);
+	if (rc) {
+		dev_err(dev, "%s: Classdev registration failed for %s\n",
+			__func__, powernv_led->cdev.name);
+	}
+
+	return rc;
+}
+
+/* Go through LED device tree node and register LED classdev structure */
+static int powernv_led_classdev(struct platform_device *pdev,
+				struct device_node *led_node,
+				struct powernv_led_common *powernv_led_common)
+{
+	const char *cur = NULL;
+	int rc = -1;
+	struct property *p;
+	struct device_node *np;
+	struct powernv_led_data *powernv_led;
+	struct device *dev = &pdev->dev;
+
+	for_each_available_child_of_node(led_node, np) {
+		p = of_find_property(np, "led-types", NULL);
+
+		while ((cur = of_prop_next_string(p, cur)) != NULL) {
+			powernv_led = devm_kzalloc(dev, sizeof(*powernv_led),
+						   GFP_KERNEL);
+			if (!powernv_led) {
+				of_node_put(np);
+				return -ENOMEM;
+			}
+
+			powernv_led->common = powernv_led_common;
+			powernv_led->loc_code = (char *)np->name;
+
+			rc = powernv_led_create(dev, powernv_led, cur);
+			if (rc) {
+				of_node_put(np);
+				return rc;
+			}
+		} /* while end */
+	}
+
+	return rc;
+}
+
+/* Platform driver probe */
+static int powernv_led_probe(struct platform_device *pdev)
+{
+	struct device_node *led_node;
+	struct powernv_led_common *powernv_led_common;
+	struct device *dev = &pdev->dev;
+	int rc;
+
+	led_node = of_find_node_by_path("/ibm,opal/leds");
+	if (!led_node) {
+		dev_err(dev, "%s: LED parent device node not found\n",
+			__func__);
+		return -EINVAL;
+	}
+
+	powernv_led_common = devm_kzalloc(dev, sizeof(*powernv_led_common),
+					  GFP_KERNEL);
+	if (!powernv_led_common) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	mutex_init(&powernv_led_common->lock);
+	powernv_led_common->max_led_type = cpu_to_be64(OPAL_SLOT_LED_TYPE_MAX);
+
+	platform_set_drvdata(pdev, powernv_led_common);
+
+	rc = powernv_led_classdev(pdev, led_node, powernv_led_common);
+out:
+	of_node_put(led_node);
+	return rc;
+}
+
+/* Platform driver remove */
+static int powernv_led_remove(struct platform_device *pdev)
+{
+	struct powernv_led_common *powernv_led_common;
+
+	/* Disable LED operation */
+	powernv_led_common = platform_get_drvdata(pdev);
+	powernv_led_common->led_disabled = true;
+
+	/* Destroy lock */
+	mutex_destroy(&powernv_led_common->lock);
+
+	dev_info(&pdev->dev, "PowerNV led module unregistered\n");
+	return 0;
+}
+
+/* Platform driver property match */
+static const struct of_device_id powernv_led_match[] = {
+	{
+		.compatible	= "ibm,opal-v3-led",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, powernv_led_match);
+
+static struct platform_driver powernv_led_driver = {
+	.probe	= powernv_led_probe,
+	.remove = powernv_led_remove,
+	.driver = {
+		.name = "powernv-led-driver",
+		.of_match_table = powernv_led_match,
+	},
+};
+
+module_platform_driver(powernv_led_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("PowerNV LED driver");
+MODULE_AUTHOR("Vasant Hegde <hegdevasant@linux.vnet.ibm.com>");