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, 363 insertions, 0 deletions

diff --git a/drivers/power/supply/cros_peripheral_charger.c b/drivers/power/supply/cros_peripheral_charger.c
new file mode 100644
index 000000000..1379afd96
--- /dev/null
+++ b/drivers/power/supply/cros_peripheral_charger.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Power supply driver for ChromeOS EC based Peripheral Device Charger.
+ *
+ * Copyright 2020 Google LLC.
+ */
+
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <asm/unaligned.h>
+
+#define DRV_NAME		"cros-ec-pchg"
+#define PCHG_DIR_PREFIX		"peripheral"
+#define PCHG_DIR_NAME		PCHG_DIR_PREFIX "%d"
+#define PCHG_DIR_NAME_LENGTH \
+		sizeof(PCHG_DIR_PREFIX __stringify(EC_PCHG_MAX_PORTS))
+#define PCHG_CACHE_UPDATE_DELAY	msecs_to_jiffies(500)
+
+struct port_data {
+	int port_number;
+	char name[PCHG_DIR_NAME_LENGTH];
+	struct power_supply *psy;
+	struct power_supply_desc psy_desc;
+	int psy_status;
+	int battery_percentage;
+	int charge_type;
+	struct charger_data *charger;
+	unsigned long last_update;
+};
+
+struct charger_data {
+	struct device *dev;
+	struct cros_ec_dev *ec_dev;
+	struct cros_ec_device *ec_device;
+	int num_registered_psy;
+	struct port_data *ports[EC_PCHG_MAX_PORTS];
+	struct notifier_block notifier;
+};
+
+static enum power_supply_property cros_pchg_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_SCOPE,
+};
+
+static int cros_pchg_ec_command(const struct charger_data *charger,
+				unsigned int version,
+				unsigned int command,
+				const void *outdata,
+				unsigned int outsize,
+				void *indata,
+				unsigned int insize)
+{
+	struct cros_ec_dev *ec_dev = charger->ec_dev;
+	struct cros_ec_command *msg;
+	int ret;
+
+	msg = kzalloc(struct_size(msg, data, max(outsize, insize)), GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	msg->version = version;
+	msg->command = ec_dev->cmd_offset + command;
+	msg->outsize = outsize;
+	msg->insize = insize;
+
+	if (outsize)
+		memcpy(msg->data, outdata, outsize);
+
+	ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);
+	if (ret >= 0 && insize)
+		memcpy(indata, msg->data, insize);
+
+	kfree(msg);
+	return ret;
+}
+
+static const unsigned int pchg_cmd_version = 1;
+
+static bool cros_pchg_cmd_ver_check(const struct charger_data *charger)
+{
+	struct ec_params_get_cmd_versions_v1 req;
+	struct ec_response_get_cmd_versions rsp;
+	int ret;
+
+	req.cmd = EC_CMD_PCHG;
+	ret = cros_pchg_ec_command(charger, 1, EC_CMD_GET_CMD_VERSIONS,
+				   &req, sizeof(req), &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_warn(charger->dev,
+			 "Unable to get versions of EC_CMD_PCHG (err:%d)\n",
+			 ret);
+		return false;
+	}
+
+	return !!(rsp.version_mask & BIT(pchg_cmd_version));
+}
+
+static int cros_pchg_port_count(const struct charger_data *charger)
+{
+	struct ec_response_pchg_count rsp;
+	int ret;
+
+	ret = cros_pchg_ec_command(charger, 0, EC_CMD_PCHG_COUNT,
+				   NULL, 0, &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_warn(charger->dev,
+			 "Unable to get number or ports (err:%d)\n", ret);
+		return ret;
+	}
+
+	return rsp.port_count;
+}
+
+static int cros_pchg_get_status(struct port_data *port)
+{
+	struct charger_data *charger = port->charger;
+	struct ec_params_pchg req;
+	struct ec_response_pchg rsp;
+	struct device *dev = charger->dev;
+	int old_status = port->psy_status;
+	int old_percentage = port->battery_percentage;
+	int ret;
+
+	req.port = port->port_number;
+	ret = cros_pchg_ec_command(charger, pchg_cmd_version, EC_CMD_PCHG,
+				   &req, sizeof(req), &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_err(dev, "Unable to get port.%d status (err:%d)\n",
+			port->port_number, ret);
+		return ret;
+	}
+
+	switch (rsp.state) {
+	case PCHG_STATE_RESET:
+	case PCHG_STATE_INITIALIZED:
+	case PCHG_STATE_ENABLED:
+	default:
+		port->psy_status = POWER_SUPPLY_STATUS_UNKNOWN;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	case PCHG_STATE_DETECTED:
+		port->psy_status = POWER_SUPPLY_STATUS_CHARGING;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		break;
+	case PCHG_STATE_CHARGING:
+		port->psy_status = POWER_SUPPLY_STATUS_CHARGING;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
+		break;
+	case PCHG_STATE_FULL:
+		port->psy_status = POWER_SUPPLY_STATUS_FULL;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	}
+
+	port->battery_percentage = rsp.battery_percentage;
+
+	if (port->psy_status != old_status ||
+			port->battery_percentage != old_percentage)
+		power_supply_changed(port->psy);
+
+	dev_dbg(dev,
+		"Port %d: state=%d battery=%d%%\n",
+		port->port_number, rsp.state, rsp.battery_percentage);
+
+	return 0;
+}
+
+static int cros_pchg_get_port_status(struct port_data *port, bool ratelimit)
+{
+	int ret;
+
+	if (ratelimit &&
+	    time_is_after_jiffies(port->last_update + PCHG_CACHE_UPDATE_DELAY))
+		return 0;
+
+	ret = cros_pchg_get_status(port);
+	if (ret < 0)
+		return ret;
+
+	port->last_update = jiffies;
+
+	return ret;
+}
+
+static int cros_pchg_get_prop(struct power_supply *psy,
+			      enum power_supply_property psp,
+			      union power_supply_propval *val)
+{
+	struct port_data *port = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+	case POWER_SUPPLY_PROP_CAPACITY:
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		cros_pchg_get_port_status(port, true);
+		break;
+	default:
+		break;
+	}
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = port->psy_status;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = port->battery_percentage;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		val->intval = port->charge_type;
+		break;
+	case POWER_SUPPLY_PROP_SCOPE:
+		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int cros_pchg_event(const struct charger_data *charger,
+			   unsigned long host_event)
+{
+	int i;
+
+	for (i = 0; i < charger->num_registered_psy; i++)
+		cros_pchg_get_port_status(charger->ports[i], false);
+
+	return NOTIFY_OK;
+}
+
+static int cros_ec_notify(struct notifier_block *nb,
+			  unsigned long queued_during_suspend,
+			  void *data)
+{
+	struct cros_ec_device *ec_dev = data;
+	struct charger_data *charger =
+			container_of(nb, struct charger_data, notifier);
+	u32 host_event;
+
+	if (ec_dev->event_data.event_type != EC_MKBP_EVENT_PCHG ||
+			ec_dev->event_size != sizeof(host_event))
+		return NOTIFY_DONE;
+
+	host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event);
+
+	if (!(host_event & EC_MKBP_PCHG_DEVICE_EVENT))
+		return NOTIFY_DONE;
+
+	return cros_pchg_event(charger, host_event);
+}
+
+static int cros_pchg_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
+	struct cros_ec_device *ec_device = ec_dev->ec_dev;
+	struct power_supply_desc *psy_desc;
+	struct charger_data *charger;
+	struct power_supply *psy;
+	struct port_data *port;
+	struct notifier_block *nb;
+	int num_ports;
+	int ret;
+	int i;
+
+	charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL);
+	if (!charger)
+		return -ENOMEM;
+
+	charger->dev = dev;
+	charger->ec_dev = ec_dev;
+	charger->ec_device = ec_device;
+
+	ret = cros_pchg_port_count(charger);
+	if (ret <= 0) {
+		/*
+		 * This feature is enabled by the EC and the kernel driver is
+		 * included by default for CrOS devices. Don't need to be loud
+		 * since this error can be normal.
+		 */
+		dev_info(dev, "No peripheral charge ports (err:%d)\n", ret);
+		return -ENODEV;
+	}
+
+	if (!cros_pchg_cmd_ver_check(charger)) {
+		dev_err(dev, "EC_CMD_PCHG version %d isn't available.\n",
+			pchg_cmd_version);
+		return -EOPNOTSUPP;
+	}
+
+	num_ports = ret;
+	if (num_ports > EC_PCHG_MAX_PORTS) {
+		dev_err(dev, "Too many peripheral charge ports (%d)\n",
+			num_ports);
+		return -ENOBUFS;
+	}
+
+	dev_info(dev, "%d peripheral charge ports found\n", num_ports);
+
+	for (i = 0; i < num_ports; i++) {
+		struct power_supply_config psy_cfg = {};
+
+		port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
+		if (!port)
+			return -ENOMEM;
+
+		port->charger = charger;
+		port->port_number = i;
+		snprintf(port->name, sizeof(port->name), PCHG_DIR_NAME, i);
+
+		psy_desc = &port->psy_desc;
+		psy_desc->name = port->name;
+		psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+		psy_desc->get_property = cros_pchg_get_prop;
+		psy_desc->external_power_changed = NULL;
+		psy_desc->properties = cros_pchg_props;
+		psy_desc->num_properties = ARRAY_SIZE(cros_pchg_props);
+		psy_cfg.drv_data = port;
+
+		psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
+		if (IS_ERR(psy))
+			return dev_err_probe(dev, PTR_ERR(psy),
+					"Failed to register power supply\n");
+		port->psy = psy;
+
+		charger->ports[charger->num_registered_psy++] = port;
+	}
+
+	if (!charger->num_registered_psy)
+		return -ENODEV;
+
+	nb = &charger->notifier;
+	nb->notifier_call = cros_ec_notify;
+	ret = blocking_notifier_chain_register(&ec_dev->ec_dev->event_notifier,
+					       nb);
+	if (ret < 0)
+		dev_err(dev, "Failed to register notifier (err:%d)\n", ret);
+
+	return 0;
+}
+
+static struct platform_driver cros_pchg_driver = {
+	.driver = {
+		.name = DRV_NAME,
+	},
+	.probe = cros_pchg_probe
+};
+
+module_platform_driver(cros_pchg_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ChromeOS EC peripheral device charger");
+MODULE_ALIAS("platform:" DRV_NAME);