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, 304 insertions, 0 deletions

diff --git a/drivers/platform/x86/amd/pmf/acpi.c b/drivers/platform/x86/amd/pmf/acpi.c
new file mode 100644
index 000000000..081e84e11
--- /dev/null
+++ b/drivers/platform/x86/amd/pmf/acpi.c
@@ -0,0 +1,304 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AMD Platform Management Framework Driver
+ *
+ * Copyright (c) 2022, Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
+ */
+
+#include <linux/acpi.h>
+#include "pmf.h"
+
+#define APMF_CQL_NOTIFICATION  2
+#define APMF_AMT_NOTIFICATION  3
+
+static union acpi_object *apmf_if_call(struct amd_pmf_dev *pdev, int fn, struct acpi_buffer *param)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	acpi_handle ahandle = ACPI_HANDLE(pdev->dev);
+	struct acpi_object_list apmf_if_arg_list;
+	union acpi_object apmf_if_args[2];
+	acpi_status status;
+
+	apmf_if_arg_list.count = 2;
+	apmf_if_arg_list.pointer = &apmf_if_args[0];
+
+	apmf_if_args[0].type = ACPI_TYPE_INTEGER;
+	apmf_if_args[0].integer.value = fn;
+
+	if (param) {
+		apmf_if_args[1].type = ACPI_TYPE_BUFFER;
+		apmf_if_args[1].buffer.length = param->length;
+		apmf_if_args[1].buffer.pointer = param->pointer;
+	} else {
+		apmf_if_args[1].type = ACPI_TYPE_INTEGER;
+		apmf_if_args[1].integer.value = 0;
+	}
+
+	status = acpi_evaluate_object(ahandle, "APMF", &apmf_if_arg_list, &buffer);
+	if (ACPI_FAILURE(status)) {
+		dev_err(pdev->dev, "APMF method:%d call failed\n", fn);
+		kfree(buffer.pointer);
+		return NULL;
+	}
+
+	return buffer.pointer;
+}
+
+static int apmf_if_call_store_buffer(struct amd_pmf_dev *pdev, int fn, void *dest, size_t out_sz)
+{
+	union acpi_object *info;
+	size_t size;
+	int err = 0;
+
+	info = apmf_if_call(pdev, fn, NULL);
+	if (!info)
+		return -EIO;
+
+	if (info->type != ACPI_TYPE_BUFFER) {
+		dev_err(pdev->dev, "object is not a buffer\n");
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (info->buffer.length < 2) {
+		dev_err(pdev->dev, "buffer too small\n");
+		err = -EINVAL;
+		goto out;
+	}
+
+	size = *(u16 *)info->buffer.pointer;
+	if (info->buffer.length < size) {
+		dev_err(pdev->dev, "buffer smaller then headersize %u < %zu\n",
+			info->buffer.length, size);
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (size < out_sz) {
+		dev_err(pdev->dev, "buffer too small %zu\n", size);
+		err = -EINVAL;
+		goto out;
+	}
+
+	memcpy(dest, info->buffer.pointer, out_sz);
+
+out:
+	kfree(info);
+	return err;
+}
+
+int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index)
+{
+	/* If bit-n is set, that indicates function n+1 is supported */
+	return !!(pdev->supported_func & BIT(index - 1));
+}
+
+int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev,
+				    struct apmf_static_slider_granular_output *data)
+{
+	if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR))
+		return -EINVAL;
+
+	return apmf_if_call_store_buffer(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR,
+									 data, sizeof(*data));
+}
+
+static void apmf_sbios_heartbeat_notify(struct work_struct *work)
+{
+	struct amd_pmf_dev *dev = container_of(work, struct amd_pmf_dev, heart_beat.work);
+	union acpi_object *info;
+
+	dev_dbg(dev->dev, "Sending heartbeat to SBIOS\n");
+	info = apmf_if_call(dev, APMF_FUNC_SBIOS_HEARTBEAT, NULL);
+	if (!info)
+		goto out;
+
+	schedule_delayed_work(&dev->heart_beat, msecs_to_jiffies(dev->hb_interval * 1000));
+
+out:
+	kfree(info);
+}
+
+int apmf_update_fan_idx(struct amd_pmf_dev *pdev, bool manual, u32 idx)
+{
+	union acpi_object *info;
+	struct apmf_fan_idx args;
+	struct acpi_buffer params;
+	int err = 0;
+
+	args.size = sizeof(args);
+	args.fan_ctl_mode = manual;
+	args.fan_ctl_idx = idx;
+
+	params.length = sizeof(args);
+	params.pointer = (void *)&args;
+
+	info = apmf_if_call(pdev, APMF_FUNC_SET_FAN_IDX, &params);
+	if (!info) {
+		err = -EIO;
+		goto out;
+	}
+
+out:
+	kfree(info);
+	return err;
+}
+
+int apmf_get_auto_mode_def(struct amd_pmf_dev *pdev, struct apmf_auto_mode *data)
+{
+	return apmf_if_call_store_buffer(pdev, APMF_FUNC_AUTO_MODE, data, sizeof(*data));
+}
+
+int apmf_get_sbios_requests(struct amd_pmf_dev *pdev, struct apmf_sbios_req *req)
+{
+	return apmf_if_call_store_buffer(pdev, APMF_FUNC_SBIOS_REQUESTS,
+									 req, sizeof(*req));
+}
+
+static void apmf_event_handler(acpi_handle handle, u32 event, void *data)
+{
+	struct amd_pmf_dev *pmf_dev = data;
+	struct apmf_sbios_req req;
+	int ret;
+
+	mutex_lock(&pmf_dev->update_mutex);
+	ret = apmf_get_sbios_requests(pmf_dev, &req);
+	if (ret) {
+		dev_err(pmf_dev->dev, "Failed to get SBIOS requests:%d\n", ret);
+		goto out;
+	}
+
+	if (req.pending_req & BIT(APMF_AMT_NOTIFICATION)) {
+		dev_dbg(pmf_dev->dev, "AMT is supported and notifications %s\n",
+			req.amt_event ? "Enabled" : "Disabled");
+		pmf_dev->amt_enabled = !!req.amt_event;
+
+		if (pmf_dev->amt_enabled)
+			amd_pmf_handle_amt(pmf_dev);
+		else
+			amd_pmf_reset_amt(pmf_dev);
+	}
+
+	if (req.pending_req & BIT(APMF_CQL_NOTIFICATION)) {
+		dev_dbg(pmf_dev->dev, "CQL is supported and notifications %s\n",
+			req.cql_event ? "Enabled" : "Disabled");
+
+		/* update the target mode information */
+		if (pmf_dev->amt_enabled)
+			amd_pmf_update_2_cql(pmf_dev, req.cql_event);
+	}
+out:
+	mutex_unlock(&pmf_dev->update_mutex);
+}
+
+static int apmf_if_verify_interface(struct amd_pmf_dev *pdev)
+{
+	struct apmf_verify_interface output;
+	int err;
+
+	err = apmf_if_call_store_buffer(pdev, APMF_FUNC_VERIFY_INTERFACE, &output, sizeof(output));
+	if (err)
+		return err;
+
+	pdev->supported_func = output.supported_functions;
+	dev_dbg(pdev->dev, "supported functions:0x%x notifications:0x%x\n",
+		output.supported_functions, output.notification_mask);
+
+	return 0;
+}
+
+static int apmf_get_system_params(struct amd_pmf_dev *dev)
+{
+	struct apmf_system_params params;
+	int err;
+
+	if (!is_apmf_func_supported(dev, APMF_FUNC_GET_SYS_PARAMS))
+		return -EINVAL;
+
+	err = apmf_if_call_store_buffer(dev, APMF_FUNC_GET_SYS_PARAMS, &params, sizeof(params));
+	if (err)
+		return err;
+
+	dev_dbg(dev->dev, "system params mask:0x%x flags:0x%x cmd_code:0x%x heartbeat:%d\n",
+		params.valid_mask,
+		params.flags,
+		params.command_code,
+		params.heartbeat_int);
+	params.flags = params.flags & params.valid_mask;
+	dev->hb_interval = params.heartbeat_int;
+
+	return 0;
+}
+
+int apmf_get_dyn_slider_def_ac(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data)
+{
+	return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_AC, data, sizeof(*data));
+}
+
+int apmf_get_dyn_slider_def_dc(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data)
+{
+	return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_DC, data, sizeof(*data));
+}
+
+int apmf_install_handler(struct amd_pmf_dev *pmf_dev)
+{
+	acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev);
+	acpi_status status;
+
+	/* Install the APMF Notify handler */
+	if (is_apmf_func_supported(pmf_dev, APMF_FUNC_AUTO_MODE) &&
+	    is_apmf_func_supported(pmf_dev, APMF_FUNC_SBIOS_REQUESTS)) {
+		status = acpi_install_notify_handler(ahandle, ACPI_ALL_NOTIFY,
+						     apmf_event_handler, pmf_dev);
+		if (ACPI_FAILURE(status)) {
+			dev_err(pmf_dev->dev, "failed to install notify handler\n");
+			return -ENODEV;
+		}
+
+		/* Call the handler once manually to catch up with possibly missed notifies. */
+		apmf_event_handler(ahandle, 0, pmf_dev);
+	}
+
+	return 0;
+}
+
+void apmf_acpi_deinit(struct amd_pmf_dev *pmf_dev)
+{
+	acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev);
+
+	if (pmf_dev->hb_interval)
+		cancel_delayed_work_sync(&pmf_dev->heart_beat);
+
+	if (is_apmf_func_supported(pmf_dev, APMF_FUNC_AUTO_MODE) &&
+	    is_apmf_func_supported(pmf_dev, APMF_FUNC_SBIOS_REQUESTS))
+		acpi_remove_notify_handler(ahandle, ACPI_ALL_NOTIFY, apmf_event_handler);
+}
+
+int apmf_acpi_init(struct amd_pmf_dev *pmf_dev)
+{
+	int ret;
+
+	ret = apmf_if_verify_interface(pmf_dev);
+	if (ret) {
+		dev_err(pmf_dev->dev, "APMF verify interface failed :%d\n", ret);
+		goto out;
+	}
+
+	ret = apmf_get_system_params(pmf_dev);
+	if (ret) {
+		dev_err(pmf_dev->dev, "APMF apmf_get_system_params failed :%d\n", ret);
+		goto out;
+	}
+
+	if (pmf_dev->hb_interval) {
+		/* send heartbeats only if the interval is not zero */
+		INIT_DELAYED_WORK(&pmf_dev->heart_beat, apmf_sbios_heartbeat_notify);
+		schedule_delayed_work(&pmf_dev->heart_beat, 0);
+	}
+
+out:
+	return ret;
+}