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, 318 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
new file mode 100644
index 000000000..cde800398
--- /dev/null
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+    Copyright (c) 2003 Mark M. Hoffman <mhoffman@lightlink.com>
+
+*/
+
+/*
+    This module must be considered BETA unless and until
+    the chipset manufacturer releases a datasheet.
+    The register definitions are based on the SiS630.
+
+    This module relies on quirk_sis_96x_smbus (drivers/pci/quirks.c)
+    for just about every machine for which users have reported.
+    If this module isn't detecting your 96x south bridge, have a 
+    look there.
+
+    We assume there can only be one SiS96x with one SMBus interface.
+*/
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/stddef.h>
+#include <linux/ioport.h>
+#include <linux/i2c.h>
+#include <linux/acpi.h>
+#include <linux/io.h>
+
+/* base address register in PCI config space */
+#define SIS96x_BAR 0x04
+
+/* SiS96x SMBus registers */
+#define SMB_STS      0x00
+#define SMB_EN       0x01
+#define SMB_CNT      0x02
+#define SMB_HOST_CNT 0x03
+#define SMB_ADDR     0x04
+#define SMB_CMD      0x05
+#define SMB_PCOUNT   0x06
+#define SMB_COUNT    0x07
+#define SMB_BYTE     0x08
+#define SMB_DEV_ADDR 0x10
+#define SMB_DB0      0x11
+#define SMB_DB1      0x12
+#define SMB_SAA      0x13
+
+/* register count for request_region */
+#define SMB_IOSIZE 0x20
+
+/* Other settings */
+#define MAX_TIMEOUT 500
+
+/* SiS96x SMBus constants */
+#define SIS96x_QUICK      0x00
+#define SIS96x_BYTE       0x01
+#define SIS96x_BYTE_DATA  0x02
+#define SIS96x_WORD_DATA  0x03
+#define SIS96x_PROC_CALL  0x04
+#define SIS96x_BLOCK_DATA 0x05
+
+static struct pci_driver sis96x_driver;
+static struct i2c_adapter sis96x_adapter;
+static u16 sis96x_smbus_base;
+
+static inline u8 sis96x_read(u8 reg)
+{
+	return inb(sis96x_smbus_base + reg) ;
+}
+
+static inline void sis96x_write(u8 reg, u8 data)
+{
+	outb(data, sis96x_smbus_base + reg) ;
+}
+
+/* Execute a SMBus transaction.
+   int size is from SIS96x_QUICK to SIS96x_BLOCK_DATA
+ */
+static int sis96x_transaction(int size)
+{
+	int temp;
+	int result = 0;
+	int timeout = 0;
+
+	dev_dbg(&sis96x_adapter.dev, "SMBus transaction %d\n", size);
+
+	/* Make sure the SMBus host is ready to start transmitting */
+	if (((temp = sis96x_read(SMB_CNT)) & 0x03) != 0x00) {
+
+		dev_dbg(&sis96x_adapter.dev, "SMBus busy (0x%02x). "
+			"Resetting...\n", temp);
+
+		/* kill the transaction */
+		sis96x_write(SMB_HOST_CNT, 0x20);
+
+		/* check it again */
+		if (((temp = sis96x_read(SMB_CNT)) & 0x03) != 0x00) {
+			dev_dbg(&sis96x_adapter.dev, "Failed (0x%02x)\n", temp);
+			return -EBUSY;
+		} else {
+			dev_dbg(&sis96x_adapter.dev, "Successful\n");
+		}
+	}
+
+	/* Turn off timeout interrupts, set fast host clock */
+	sis96x_write(SMB_CNT, 0x20);
+
+	/* clear all (sticky) status flags */
+	temp = sis96x_read(SMB_STS);
+	sis96x_write(SMB_STS, temp & 0x1e);
+
+	/* start the transaction by setting bit 4 and size bits */
+	sis96x_write(SMB_HOST_CNT, 0x10 | (size & 0x07));
+
+	/* We will always wait for a fraction of a second! */
+	do {
+		msleep(1);
+		temp = sis96x_read(SMB_STS);
+	} while (!(temp & 0x0e) && (timeout++ < MAX_TIMEOUT));
+
+	/* If the SMBus is still busy, we give up */
+	if (timeout > MAX_TIMEOUT) {
+		dev_dbg(&sis96x_adapter.dev, "SMBus Timeout! (0x%02x)\n", temp);
+		result = -ETIMEDOUT;
+	}
+
+	/* device error - probably missing ACK */
+	if (temp & 0x02) {
+		dev_dbg(&sis96x_adapter.dev, "Failed bus transaction!\n");
+		result = -ENXIO;
+	}
+
+	/* bus collision */
+	if (temp & 0x04) {
+		dev_dbg(&sis96x_adapter.dev, "Bus collision!\n");
+		result = -EIO;
+	}
+
+	/* Finish up by resetting the bus */
+	sis96x_write(SMB_STS, temp);
+	if ((temp = sis96x_read(SMB_STS))) {
+		dev_dbg(&sis96x_adapter.dev, "Failed reset at "
+			"end of transaction! (0x%02x)\n", temp);
+	}
+
+	return result;
+}
+
+/* Return negative errno on error. */
+static s32 sis96x_access(struct i2c_adapter * adap, u16 addr,
+			 unsigned short flags, char read_write,
+			 u8 command, int size, union i2c_smbus_data * data)
+{
+	int status;
+
+	switch (size) {
+	case I2C_SMBUS_QUICK:
+		sis96x_write(SMB_ADDR, ((addr & 0x7f) << 1) | (read_write & 0x01));
+		size = SIS96x_QUICK;
+		break;
+
+	case I2C_SMBUS_BYTE:
+		sis96x_write(SMB_ADDR, ((addr & 0x7f) << 1) | (read_write & 0x01));
+		if (read_write == I2C_SMBUS_WRITE)
+			sis96x_write(SMB_CMD, command);
+		size = SIS96x_BYTE;
+		break;
+
+	case I2C_SMBUS_BYTE_DATA:
+		sis96x_write(SMB_ADDR, ((addr & 0x7f) << 1) | (read_write & 0x01));
+		sis96x_write(SMB_CMD, command);
+		if (read_write == I2C_SMBUS_WRITE)
+			sis96x_write(SMB_BYTE, data->byte);
+		size = SIS96x_BYTE_DATA;
+		break;
+
+	case I2C_SMBUS_PROC_CALL:
+	case I2C_SMBUS_WORD_DATA:
+		sis96x_write(SMB_ADDR, ((addr & 0x7f) << 1) | (read_write & 0x01));
+		sis96x_write(SMB_CMD, command);
+		if (read_write == I2C_SMBUS_WRITE) {
+			sis96x_write(SMB_BYTE, data->word & 0xff);
+			sis96x_write(SMB_BYTE + 1, (data->word & 0xff00) >> 8);
+		}
+		size = (size == I2C_SMBUS_PROC_CALL ? 
+			SIS96x_PROC_CALL : SIS96x_WORD_DATA);
+		break;
+
+	default:
+		dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
+		return -EOPNOTSUPP;
+	}
+
+	status = sis96x_transaction(size);
+	if (status)
+		return status;
+
+	if ((size != SIS96x_PROC_CALL) &&
+		((read_write == I2C_SMBUS_WRITE) || (size == SIS96x_QUICK)))
+		return 0;
+
+	switch (size) {
+	case SIS96x_BYTE:
+	case SIS96x_BYTE_DATA:
+		data->byte = sis96x_read(SMB_BYTE);
+		break;
+
+	case SIS96x_WORD_DATA:
+	case SIS96x_PROC_CALL:
+		data->word = sis96x_read(SMB_BYTE) +
+				(sis96x_read(SMB_BYTE + 1) << 8);
+		break;
+	}
+	return 0;
+}
+
+static u32 sis96x_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
+	    I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
+	    I2C_FUNC_SMBUS_PROC_CALL;
+}
+
+static const struct i2c_algorithm smbus_algorithm = {
+	.smbus_xfer	= sis96x_access,
+	.functionality	= sis96x_func,
+};
+
+static struct i2c_adapter sis96x_adapter = {
+	.owner		= THIS_MODULE,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
+	.algo		= &smbus_algorithm,
+};
+
+static const struct pci_device_id sis96x_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_SMBUS) },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE (pci, sis96x_ids);
+
+static int sis96x_probe(struct pci_dev *dev,
+				const struct pci_device_id *id)
+{
+	u16 ww = 0;
+	int retval;
+
+	if (sis96x_smbus_base) {
+		dev_err(&dev->dev, "Only one device supported.\n");
+		return -EBUSY;
+	}
+
+	pci_read_config_word(dev, PCI_CLASS_DEVICE, &ww);
+	if (PCI_CLASS_SERIAL_SMBUS != ww) {
+		dev_err(&dev->dev, "Unsupported device class 0x%04x!\n", ww);
+		return -ENODEV;
+	}
+
+	sis96x_smbus_base = pci_resource_start(dev, SIS96x_BAR);
+	if (!sis96x_smbus_base) {
+		dev_err(&dev->dev, "SiS96x SMBus base address "
+			"not initialized!\n");
+		return -EINVAL;
+	}
+	dev_info(&dev->dev, "SiS96x SMBus base address: 0x%04x\n",
+			sis96x_smbus_base);
+
+	retval = acpi_check_resource_conflict(&dev->resource[SIS96x_BAR]);
+	if (retval)
+		return -ENODEV;
+
+	/* Everything is happy, let's grab the memory and set things up. */
+	if (!request_region(sis96x_smbus_base, SMB_IOSIZE,
+			    sis96x_driver.name)) {
+		dev_err(&dev->dev, "SMBus registers 0x%04x-0x%04x "
+			"already in use!\n", sis96x_smbus_base,
+			sis96x_smbus_base + SMB_IOSIZE - 1);
+
+		sis96x_smbus_base = 0;
+		return -EINVAL;
+	}
+
+	/* set up the sysfs linkage to our parent device */
+	sis96x_adapter.dev.parent = &dev->dev;
+
+	snprintf(sis96x_adapter.name, sizeof(sis96x_adapter.name),
+		"SiS96x SMBus adapter at 0x%04x", sis96x_smbus_base);
+
+	if ((retval = i2c_add_adapter(&sis96x_adapter))) {
+		dev_err(&dev->dev, "Couldn't register adapter!\n");
+		release_region(sis96x_smbus_base, SMB_IOSIZE);
+		sis96x_smbus_base = 0;
+	}
+
+	return retval;
+}
+
+static void sis96x_remove(struct pci_dev *dev)
+{
+	if (sis96x_smbus_base) {
+		i2c_del_adapter(&sis96x_adapter);
+		release_region(sis96x_smbus_base, SMB_IOSIZE);
+		sis96x_smbus_base = 0;
+	}
+}
+
+static struct pci_driver sis96x_driver = {
+	.name		= "sis96x_smbus",
+	.id_table	= sis96x_ids,
+	.probe		= sis96x_probe,
+	.remove		= sis96x_remove,
+};
+
+module_pci_driver(sis96x_driver);
+
+MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>");
+MODULE_DESCRIPTION("SiS96x SMBus driver");
+MODULE_LICENSE("GPL");