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, 278 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-opal.c b/drivers/i2c/busses/i2c-opal.c
new file mode 100644
index 000000000..9f773b4f5
--- /dev/null
+++ b/drivers/i2c/busses/i2c-opal.c
@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * IBM OPAL I2C driver
+ * Copyright (C) 2014 IBM
+ */
+
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <asm/firmware.h>
+#include <asm/opal.h>
+
+static int i2c_opal_translate_error(int rc)
+{
+	switch (rc) {
+	case OPAL_NO_MEM:
+		return -ENOMEM;
+	case OPAL_PARAMETER:
+		return -EINVAL;
+	case OPAL_I2C_ARBT_LOST:
+		return -EAGAIN;
+	case OPAL_I2C_TIMEOUT:
+		return -ETIMEDOUT;
+	case OPAL_I2C_NACK_RCVD:
+		return -ENXIO;
+	case OPAL_I2C_STOP_ERR:
+		return -EBUSY;
+	default:
+		return -EIO;
+	}
+}
+
+static int i2c_opal_send_request(u32 bus_id, struct opal_i2c_request *req)
+{
+	struct opal_msg msg;
+	int token, rc;
+
+	token = opal_async_get_token_interruptible();
+	if (token < 0) {
+		if (token != -ERESTARTSYS)
+			pr_err("Failed to get the async token\n");
+
+		return token;
+	}
+
+	rc = opal_i2c_request(token, bus_id, req);
+	if (rc != OPAL_ASYNC_COMPLETION) {
+		rc = i2c_opal_translate_error(rc);
+		goto exit;
+	}
+
+	rc = opal_async_wait_response(token, &msg);
+	if (rc)
+		goto exit;
+
+	rc = opal_get_async_rc(msg);
+	if (rc != OPAL_SUCCESS) {
+		rc = i2c_opal_translate_error(rc);
+		goto exit;
+	}
+
+exit:
+	opal_async_release_token(token);
+	return rc;
+}
+
+static int i2c_opal_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+				int num)
+{
+	unsigned long opal_id = (unsigned long)adap->algo_data;
+	struct opal_i2c_request req;
+	int rc, i;
+
+	/* We only support fairly simple combinations here of one
+	 * or two messages
+	 */
+	memset(&req, 0, sizeof(req));
+	switch(num) {
+	case 1:
+		req.type = (msgs[0].flags & I2C_M_RD) ?
+			OPAL_I2C_RAW_READ : OPAL_I2C_RAW_WRITE;
+		req.addr = cpu_to_be16(msgs[0].addr);
+		req.size = cpu_to_be32(msgs[0].len);
+		req.buffer_ra = cpu_to_be64(__pa(msgs[0].buf));
+		break;
+	case 2:
+		req.type = (msgs[1].flags & I2C_M_RD) ?
+			OPAL_I2C_SM_READ : OPAL_I2C_SM_WRITE;
+		req.addr = cpu_to_be16(msgs[0].addr);
+		req.subaddr_sz = msgs[0].len;
+		for (i = 0; i < msgs[0].len; i++)
+			req.subaddr = (req.subaddr << 8) | msgs[0].buf[i];
+		req.subaddr = cpu_to_be32(req.subaddr);
+		req.size = cpu_to_be32(msgs[1].len);
+		req.buffer_ra = cpu_to_be64(__pa(msgs[1].buf));
+		break;
+	}
+
+	rc = i2c_opal_send_request(opal_id, &req);
+	if (rc)
+		return rc;
+
+	return num;
+}
+
+static int i2c_opal_smbus_xfer(struct i2c_adapter *adap, u16 addr,
+			       unsigned short flags, char read_write,
+			       u8 command, int size, union i2c_smbus_data *data)
+{
+	unsigned long opal_id = (unsigned long)adap->algo_data;
+	struct opal_i2c_request req;
+	u8 local[2];
+	int rc;
+
+	memset(&req, 0, sizeof(req));
+
+	req.addr = cpu_to_be16(addr);
+	switch (size) {
+	case I2C_SMBUS_BYTE:
+		req.buffer_ra = cpu_to_be64(__pa(&data->byte));
+		req.size = cpu_to_be32(1);
+		fallthrough;
+	case I2C_SMBUS_QUICK:
+		req.type = (read_write == I2C_SMBUS_READ) ?
+			OPAL_I2C_RAW_READ : OPAL_I2C_RAW_WRITE;
+		break;
+	case I2C_SMBUS_BYTE_DATA:
+		req.buffer_ra = cpu_to_be64(__pa(&data->byte));
+		req.size = cpu_to_be32(1);
+		req.subaddr = cpu_to_be32(command);
+		req.subaddr_sz = 1;
+		req.type = (read_write == I2C_SMBUS_READ) ?
+			OPAL_I2C_SM_READ : OPAL_I2C_SM_WRITE;
+		break;
+	case I2C_SMBUS_WORD_DATA:
+		if (!read_write) {
+			local[0] = data->word & 0xff;
+			local[1] = (data->word >> 8) & 0xff;
+		}
+		req.buffer_ra = cpu_to_be64(__pa(local));
+		req.size = cpu_to_be32(2);
+		req.subaddr = cpu_to_be32(command);
+		req.subaddr_sz = 1;
+		req.type = (read_write == I2C_SMBUS_READ) ?
+			OPAL_I2C_SM_READ : OPAL_I2C_SM_WRITE;
+		break;
+	case I2C_SMBUS_I2C_BLOCK_DATA:
+		req.buffer_ra = cpu_to_be64(__pa(&data->block[1]));
+		req.size = cpu_to_be32(data->block[0]);
+		req.subaddr = cpu_to_be32(command);
+		req.subaddr_sz = 1;
+		req.type = (read_write == I2C_SMBUS_READ) ?
+			OPAL_I2C_SM_READ : OPAL_I2C_SM_WRITE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	rc = i2c_opal_send_request(opal_id, &req);
+	if (!rc && read_write && size == I2C_SMBUS_WORD_DATA) {
+		data->word = ((u16)local[1]) << 8;
+		data->word |= local[0];
+	}
+
+	return rc;
+}
+
+static u32 i2c_opal_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
+	       I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
+	       I2C_FUNC_SMBUS_I2C_BLOCK;
+}
+
+static const struct i2c_algorithm i2c_opal_algo = {
+	.master_xfer	= i2c_opal_master_xfer,
+	.smbus_xfer	= i2c_opal_smbus_xfer,
+	.functionality	= i2c_opal_func,
+};
+
+/*
+ * For two messages, we basically support simple smbus transactions of a
+ * write-then-anything.
+ */
+static const struct i2c_adapter_quirks i2c_opal_quirks = {
+	.flags = I2C_AQ_COMB | I2C_AQ_COMB_WRITE_FIRST | I2C_AQ_COMB_SAME_ADDR,
+	.max_comb_1st_msg_len = 4,
+};
+
+static int i2c_opal_probe(struct platform_device *pdev)
+{
+	struct i2c_adapter	*adapter;
+	const char		*pname;
+	u32			opal_id;
+	int			rc;
+
+	if (!pdev->dev.of_node)
+		return -ENODEV;
+
+	rc = of_property_read_u32(pdev->dev.of_node, "ibm,opal-id", &opal_id);
+	if (rc) {
+		dev_err(&pdev->dev, "Missing ibm,opal-id property !\n");
+		return -EIO;
+	}
+
+	adapter = devm_kzalloc(&pdev->dev, sizeof(*adapter), GFP_KERNEL);
+	if (!adapter)
+		return -ENOMEM;
+
+	adapter->algo = &i2c_opal_algo;
+	adapter->algo_data = (void *)(unsigned long)opal_id;
+	adapter->quirks = &i2c_opal_quirks;
+	adapter->dev.parent = &pdev->dev;
+	adapter->dev.of_node = of_node_get(pdev->dev.of_node);
+	pname = of_get_property(pdev->dev.of_node, "ibm,port-name", NULL);
+	if (pname)
+		strscpy(adapter->name, pname, sizeof(adapter->name));
+	else
+		strscpy(adapter->name, "opal", sizeof(adapter->name));
+
+	platform_set_drvdata(pdev, adapter);
+	rc = i2c_add_adapter(adapter);
+	if (rc)
+		dev_err(&pdev->dev, "Failed to register the i2c adapter\n");
+
+	return rc;
+}
+
+static int i2c_opal_remove(struct platform_device *pdev)
+{
+	struct i2c_adapter *adapter = platform_get_drvdata(pdev);
+
+	i2c_del_adapter(adapter);
+
+	return 0;
+}
+
+static const struct of_device_id i2c_opal_of_match[] = {
+	{
+		.compatible = "ibm,opal-i2c",
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, i2c_opal_of_match);
+
+static struct platform_driver i2c_opal_driver = {
+	.probe	= i2c_opal_probe,
+	.remove	= i2c_opal_remove,
+	.driver	= {
+		.name		= "i2c-opal",
+		.of_match_table	= i2c_opal_of_match,
+	},
+};
+
+static int __init i2c_opal_init(void)
+{
+	if (!firmware_has_feature(FW_FEATURE_OPAL))
+		return -ENODEV;
+
+	return platform_driver_register(&i2c_opal_driver);
+}
+module_init(i2c_opal_init);
+
+static void __exit i2c_opal_exit(void)
+{
+	return platform_driver_unregister(&i2c_opal_driver);
+}
+module_exit(i2c_opal_exit);
+
+MODULE_AUTHOR("Neelesh Gupta <neelegup@linux.vnet.ibm.com>");
+MODULE_DESCRIPTION("IBM OPAL I2C driver");
+MODULE_LICENSE("GPL");