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, 295 insertions, 0 deletions

diff --git a/drivers/hwmon/pmbus/fsp-3y.c b/drivers/hwmon/pmbus/fsp-3y.c
new file mode 100644
index 000000000..aec294cc7
--- /dev/null
+++ b/drivers/hwmon/pmbus/fsp-3y.c
@@ -0,0 +1,295 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Hardware monitoring driver for FSP 3Y-Power PSUs
+ *
+ * Copyright (c) 2021 Václav Kubernát, CESNET
+ *
+ * This driver is mostly reverse engineered with the help of a tool called pmbus_peek written by
+ * David Brownell (and later adopted by Jan Kundrát). The device has some sort of a timing issue
+ * when switching pages, details are explained in the code. The driver support is limited. It
+ * exposes only the values, that have been tested to work correctly. Unsupported values either
+ * aren't supported by the devices or their encondings are unknown.
+ */
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include "pmbus.h"
+
+#define YM2151_PAGE_12V_LOG	0x00
+#define YM2151_PAGE_12V_REAL	0x00
+#define YM2151_PAGE_5VSB_LOG	0x01
+#define YM2151_PAGE_5VSB_REAL	0x20
+#define YH5151E_PAGE_12V_LOG	0x00
+#define YH5151E_PAGE_12V_REAL	0x00
+#define YH5151E_PAGE_5V_LOG	0x01
+#define YH5151E_PAGE_5V_REAL	0x10
+#define YH5151E_PAGE_3V3_LOG	0x02
+#define YH5151E_PAGE_3V3_REAL	0x11
+
+enum chips {
+	ym2151e,
+	yh5151e
+};
+
+struct fsp3y_data {
+	struct pmbus_driver_info info;
+	int chip;
+	int page;
+
+	bool vout_linear_11;
+};
+
+#define to_fsp3y_data(x) container_of(x, struct fsp3y_data, info)
+
+static int page_log_to_page_real(int page_log, enum chips chip)
+{
+	switch (chip) {
+	case ym2151e:
+		switch (page_log) {
+		case YM2151_PAGE_12V_LOG:
+			return YM2151_PAGE_12V_REAL;
+		case YM2151_PAGE_5VSB_LOG:
+			return YM2151_PAGE_5VSB_REAL;
+		}
+		return -EINVAL;
+	case yh5151e:
+		switch (page_log) {
+		case YH5151E_PAGE_12V_LOG:
+			return YH5151E_PAGE_12V_REAL;
+		case YH5151E_PAGE_5V_LOG:
+			return YH5151E_PAGE_5V_REAL;
+		case YH5151E_PAGE_3V3_LOG:
+			return YH5151E_PAGE_3V3_REAL;
+		}
+		return -EINVAL;
+	}
+
+	return -EINVAL;
+}
+
+static int set_page(struct i2c_client *client, int page_log)
+{
+	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
+	struct fsp3y_data *data = to_fsp3y_data(info);
+	int rv;
+	int page_real;
+
+	if (page_log < 0)
+		return 0;
+
+	page_real = page_log_to_page_real(page_log, data->chip);
+	if (page_real < 0)
+		return page_real;
+
+	if (data->page != page_real) {
+		rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page_real);
+		if (rv < 0)
+			return rv;
+
+		data->page = page_real;
+
+		/*
+		 * Testing showed that the device has a timing issue. After
+		 * setting a page, it takes a while, before the device actually
+		 * gives the correct values from the correct page. 20 ms was
+		 * tested to be enough to not give wrong values (15 ms wasn't
+		 * enough).
+		 */
+		usleep_range(20000, 30000);
+	}
+
+	return 0;
+}
+
+static int fsp3y_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
+	struct fsp3y_data *data = to_fsp3y_data(info);
+	int rv;
+
+	/*
+	 * Inject an exponent for non-compliant YH5151-E.
+	 */
+	if (data->vout_linear_11 && reg == PMBUS_VOUT_MODE)
+		return 0x1A;
+
+	rv = set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int fsp3y_read_word_data(struct i2c_client *client, int page, int phase, int reg)
+{
+	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
+	struct fsp3y_data *data = to_fsp3y_data(info);
+	int rv;
+
+	/*
+	 * This masks commands which weren't tested to work correctly. Some of
+	 * the masked commands return 0xFFFF. These would probably get tagged as
+	 * invalid by pmbus_core. Other ones do return values which might be
+	 * useful (that is, they are not 0xFFFF), but their encoding is unknown,
+	 * and so they are unsupported.
+	 */
+	switch (reg) {
+	case PMBUS_READ_FAN_SPEED_1:
+	case PMBUS_READ_IIN:
+	case PMBUS_READ_IOUT:
+	case PMBUS_READ_PIN:
+	case PMBUS_READ_POUT:
+	case PMBUS_READ_TEMPERATURE_1:
+	case PMBUS_READ_TEMPERATURE_2:
+	case PMBUS_READ_TEMPERATURE_3:
+	case PMBUS_READ_VIN:
+	case PMBUS_READ_VOUT:
+	case PMBUS_STATUS_WORD:
+		break;
+	default:
+		return -ENXIO;
+	}
+
+	rv = set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	rv = i2c_smbus_read_word_data(client, reg);
+	if (rv < 0)
+		return rv;
+
+	/*
+	 * Handle YH-5151E non-compliant linear11 vout voltage.
+	 */
+	if (data->vout_linear_11 && reg == PMBUS_READ_VOUT)
+		rv = sign_extend32(rv, 10) & 0xffff;
+
+	return rv;
+}
+
+static struct pmbus_driver_info fsp3y_info[] = {
+	[ym2151e] = {
+		.pages = 2,
+		.func[YM2151_PAGE_12V_LOG] =
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
+			PMBUS_HAVE_PIN | PMBUS_HAVE_POUT  |
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
+			PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
+			PMBUS_HAVE_FAN12,
+		.func[YM2151_PAGE_5VSB_LOG] =
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT,
+			PMBUS_HAVE_IIN,
+		.read_word_data = fsp3y_read_word_data,
+		.read_byte_data = fsp3y_read_byte_data,
+	},
+	[yh5151e] = {
+		.pages = 3,
+		.func[YH5151E_PAGE_12V_LOG] =
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
+			PMBUS_HAVE_POUT  |
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3,
+		.func[YH5151E_PAGE_5V_LOG] =
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
+			PMBUS_HAVE_POUT,
+		.func[YH5151E_PAGE_3V3_LOG] =
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
+			PMBUS_HAVE_POUT,
+		.read_word_data = fsp3y_read_word_data,
+		.read_byte_data = fsp3y_read_byte_data,
+	}
+};
+
+static int fsp3y_detect(struct i2c_client *client)
+{
+	int rv;
+	u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
+
+	rv = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
+	if (rv < 0)
+		return rv;
+
+	buf[rv] = '\0';
+
+	if (rv == 8) {
+		if (!strcmp(buf, "YM-2151E"))
+			return ym2151e;
+		else if (!strcmp(buf, "YH-5151E"))
+			return yh5151e;
+	}
+
+	dev_err(&client->dev, "Unsupported model %.*s\n", rv, buf);
+	return -ENODEV;
+}
+
+static const struct i2c_device_id fsp3y_id[] = {
+	{"ym2151e", ym2151e},
+	{"yh5151e", yh5151e},
+	{ }
+};
+
+static int fsp3y_probe(struct i2c_client *client)
+{
+	struct fsp3y_data *data;
+	const struct i2c_device_id *id;
+	int rv;
+
+	data = devm_kzalloc(&client->dev, sizeof(struct fsp3y_data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->chip = fsp3y_detect(client);
+	if (data->chip < 0)
+		return data->chip;
+
+	id = i2c_match_id(fsp3y_id, client);
+	if (data->chip != id->driver_data)
+		dev_warn(&client->dev, "Device mismatch: Configured %s (%d), detected %d\n",
+			 id->name, (int)id->driver_data, data->chip);
+
+	rv = i2c_smbus_read_byte_data(client, PMBUS_PAGE);
+	if (rv < 0)
+		return rv;
+	data->page = rv;
+
+	data->info = fsp3y_info[data->chip];
+
+	/*
+	 * YH-5151E sometimes reports vout in linear11 and sometimes in
+	 * linear16. This depends on the exact individual piece of hardware. One
+	 * YH-5151E can use linear16 and another might use linear11 instead.
+	 *
+	 * The format can be recognized by reading VOUT_MODE - if it doesn't
+	 * report a valid exponent, then vout uses linear11. Otherwise, the
+	 * device is compliant and uses linear16.
+	 */
+	data->vout_linear_11 = false;
+	if (data->chip == yh5151e) {
+		rv = i2c_smbus_read_byte_data(client, PMBUS_VOUT_MODE);
+		if (rv < 0)
+			return rv;
+
+		if (rv == 0xFF)
+			data->vout_linear_11 = true;
+	}
+
+	return pmbus_do_probe(client, &data->info);
+}
+
+MODULE_DEVICE_TABLE(i2c, fsp3y_id);
+
+static struct i2c_driver fsp3y_driver = {
+	.driver = {
+		   .name = "fsp3y",
+		   },
+	.probe_new = fsp3y_probe,
+	.id_table = fsp3y_id
+};
+
+module_i2c_driver(fsp3y_driver);
+
+MODULE_AUTHOR("Václav Kubernát");
+MODULE_DESCRIPTION("PMBus driver for FSP/3Y-Power power supplies");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);