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, 344 insertions, 0 deletions

diff --git a/drivers/acpi/prmt.c b/drivers/acpi/prmt.c
new file mode 100644
index 000000000..3d4c4620f
--- /dev/null
+++ b/drivers/acpi/prmt.c
@@ -0,0 +1,344 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Author: Erik Kaneda <erik.kaneda@intel.com>
+ * Copyright 2020 Intel Corporation
+ *
+ * prmt.c
+ *
+ * Each PRM service is an executable that is run in a restricted environment
+ * that is invoked by writing to the PlatformRtMechanism OperationRegion from
+ * AML bytecode.
+ *
+ * init_prmt initializes the Platform Runtime Mechanism (PRM) services by
+ * processing data in the PRMT as well as registering an ACPI OperationRegion
+ * handler for the PlatformRtMechanism subtype.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/efi.h>
+#include <linux/acpi.h>
+#include <linux/prmt.h>
+#include <asm/efi.h>
+
+#pragma pack(1)
+struct prm_mmio_addr_range {
+	u64 phys_addr;
+	u64 virt_addr;
+	u32 length;
+};
+
+struct prm_mmio_info {
+	u64 mmio_count;
+	struct prm_mmio_addr_range addr_ranges[];
+};
+
+struct prm_buffer {
+	u8 prm_status;
+	u64 efi_status;
+	u8 prm_cmd;
+	guid_t handler_guid;
+};
+
+struct prm_context_buffer {
+	char signature[ACPI_NAMESEG_SIZE];
+	u16 revision;
+	u16 reserved;
+	guid_t identifier;
+	u64 static_data_buffer;
+	struct prm_mmio_info *mmio_ranges;
+};
+#pragma pack()
+
+static LIST_HEAD(prm_module_list);
+
+struct prm_handler_info {
+	guid_t guid;
+	void *handler_addr;
+	u64 static_data_buffer_addr;
+	u64 acpi_param_buffer_addr;
+
+	struct list_head handler_list;
+};
+
+struct prm_module_info {
+	guid_t guid;
+	u16 major_rev;
+	u16 minor_rev;
+	u16 handler_count;
+	struct prm_mmio_info *mmio_info;
+	bool updatable;
+
+	struct list_head module_list;
+	struct prm_handler_info handlers[];
+};
+
+static u64 efi_pa_va_lookup(u64 pa)
+{
+	efi_memory_desc_t *md;
+	u64 pa_offset = pa & ~PAGE_MASK;
+	u64 page = pa & PAGE_MASK;
+
+	for_each_efi_memory_desc(md) {
+		if (md->phys_addr < pa && pa < md->phys_addr + PAGE_SIZE * md->num_pages)
+			return pa_offset + md->virt_addr + page - md->phys_addr;
+	}
+
+	return 0;
+}
+
+#define get_first_handler(a) ((struct acpi_prmt_handler_info *) ((char *) (a) + a->handler_info_offset))
+#define get_next_handler(a) ((struct acpi_prmt_handler_info *) (sizeof(struct acpi_prmt_handler_info) + (char *) a))
+
+static int __init
+acpi_parse_prmt(union acpi_subtable_headers *header, const unsigned long end)
+{
+	struct acpi_prmt_module_info *module_info;
+	struct acpi_prmt_handler_info *handler_info;
+	struct prm_handler_info *th;
+	struct prm_module_info *tm;
+	u64 *mmio_count;
+	u64 cur_handler = 0;
+	u32 module_info_size = 0;
+	u64 mmio_range_size = 0;
+	void *temp_mmio;
+
+	module_info = (struct acpi_prmt_module_info *) header;
+	module_info_size = struct_size(tm, handlers, module_info->handler_info_count);
+	tm = kmalloc(module_info_size, GFP_KERNEL);
+	if (!tm)
+		goto parse_prmt_out1;
+
+	guid_copy(&tm->guid, (guid_t *) module_info->module_guid);
+	tm->major_rev = module_info->major_rev;
+	tm->minor_rev = module_info->minor_rev;
+	tm->handler_count = module_info->handler_info_count;
+	tm->updatable = true;
+
+	if (module_info->mmio_list_pointer) {
+		/*
+		 * Each module is associated with a list of addr
+		 * ranges that it can use during the service
+		 */
+		mmio_count = (u64 *) memremap(module_info->mmio_list_pointer, 8, MEMREMAP_WB);
+		if (!mmio_count)
+			goto parse_prmt_out2;
+
+		mmio_range_size = struct_size(tm->mmio_info, addr_ranges, *mmio_count);
+		tm->mmio_info = kmalloc(mmio_range_size, GFP_KERNEL);
+		if (!tm->mmio_info)
+			goto parse_prmt_out3;
+
+		temp_mmio = memremap(module_info->mmio_list_pointer, mmio_range_size, MEMREMAP_WB);
+		if (!temp_mmio)
+			goto parse_prmt_out4;
+		memmove(tm->mmio_info, temp_mmio, mmio_range_size);
+	} else {
+		tm->mmio_info = kmalloc(sizeof(*tm->mmio_info), GFP_KERNEL);
+		if (!tm->mmio_info)
+			goto parse_prmt_out2;
+
+		tm->mmio_info->mmio_count = 0;
+	}
+
+	INIT_LIST_HEAD(&tm->module_list);
+	list_add(&tm->module_list, &prm_module_list);
+
+	handler_info = get_first_handler(module_info);
+	do {
+		th = &tm->handlers[cur_handler];
+
+		guid_copy(&th->guid, (guid_t *)handler_info->handler_guid);
+		th->handler_addr = (void *)efi_pa_va_lookup(handler_info->handler_address);
+		th->static_data_buffer_addr = efi_pa_va_lookup(handler_info->static_data_buffer_address);
+		th->acpi_param_buffer_addr = efi_pa_va_lookup(handler_info->acpi_param_buffer_address);
+	} while (++cur_handler < tm->handler_count && (handler_info = get_next_handler(handler_info)));
+
+	return 0;
+
+parse_prmt_out4:
+	kfree(tm->mmio_info);
+parse_prmt_out3:
+	memunmap(mmio_count);
+parse_prmt_out2:
+	kfree(tm);
+parse_prmt_out1:
+	return -ENOMEM;
+}
+
+#define GET_MODULE	0
+#define GET_HANDLER	1
+
+static void *find_guid_info(const guid_t *guid, u8 mode)
+{
+	struct prm_handler_info *cur_handler;
+	struct prm_module_info *cur_module;
+	int i = 0;
+
+	list_for_each_entry(cur_module, &prm_module_list, module_list) {
+		for (i = 0; i < cur_module->handler_count; ++i) {
+			cur_handler = &cur_module->handlers[i];
+			if (guid_equal(guid, &cur_handler->guid)) {
+				if (mode == GET_MODULE)
+					return (void *)cur_module;
+				else
+					return (void *)cur_handler;
+			}
+		}
+	}
+
+	return NULL;
+}
+
+static struct prm_module_info *find_prm_module(const guid_t *guid)
+{
+	return (struct prm_module_info *)find_guid_info(guid, GET_MODULE);
+}
+
+static struct prm_handler_info *find_prm_handler(const guid_t *guid)
+{
+	return (struct prm_handler_info *) find_guid_info(guid, GET_HANDLER);
+}
+
+/* In-coming PRM commands */
+
+#define PRM_CMD_RUN_SERVICE		0
+#define PRM_CMD_START_TRANSACTION	1
+#define PRM_CMD_END_TRANSACTION		2
+
+/* statuses that can be passed back to ASL */
+
+#define PRM_HANDLER_SUCCESS 		0
+#define PRM_HANDLER_ERROR 		1
+#define INVALID_PRM_COMMAND 		2
+#define PRM_HANDLER_GUID_NOT_FOUND 	3
+#define UPDATE_LOCK_ALREADY_HELD 	4
+#define UPDATE_UNLOCK_WITHOUT_LOCK 	5
+
+/*
+ * This is the PlatformRtMechanism opregion space handler.
+ * @function: indicates the read/write. In fact as the PlatformRtMechanism
+ * message is driven by command, only write is meaningful.
+ *
+ * @addr   : not used
+ * @bits   : not used.
+ * @value  : it is an in/out parameter. It points to the PRM message buffer.
+ * @handler_context: not used
+ */
+static acpi_status acpi_platformrt_space_handler(u32 function,
+						 acpi_physical_address addr,
+						 u32 bits, acpi_integer *value,
+						 void *handler_context,
+						 void *region_context)
+{
+	struct prm_buffer *buffer = ACPI_CAST_PTR(struct prm_buffer, value);
+	struct prm_handler_info *handler;
+	struct prm_module_info *module;
+	efi_status_t status;
+	struct prm_context_buffer context;
+
+	if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+		pr_err_ratelimited("PRM: EFI runtime services no longer available\n");
+		return AE_NO_HANDLER;
+	}
+
+	/*
+	 * The returned acpi_status will always be AE_OK. Error values will be
+	 * saved in the first byte of the PRM message buffer to be used by ASL.
+	 */
+	switch (buffer->prm_cmd) {
+	case PRM_CMD_RUN_SERVICE:
+
+		handler = find_prm_handler(&buffer->handler_guid);
+		module = find_prm_module(&buffer->handler_guid);
+		if (!handler || !module)
+			goto invalid_guid;
+
+		ACPI_COPY_NAMESEG(context.signature, "PRMC");
+		context.revision = 0x0;
+		context.reserved = 0x0;
+		context.identifier = handler->guid;
+		context.static_data_buffer = handler->static_data_buffer_addr;
+		context.mmio_ranges = module->mmio_info;
+
+		status = efi_call_virt_pointer(handler, handler_addr,
+					       handler->acpi_param_buffer_addr,
+					       &context);
+		if (status == EFI_SUCCESS) {
+			buffer->prm_status = PRM_HANDLER_SUCCESS;
+		} else {
+			buffer->prm_status = PRM_HANDLER_ERROR;
+			buffer->efi_status = status;
+		}
+		break;
+
+	case PRM_CMD_START_TRANSACTION:
+
+		module = find_prm_module(&buffer->handler_guid);
+		if (!module)
+			goto invalid_guid;
+
+		if (module->updatable)
+			module->updatable = false;
+		else
+			buffer->prm_status = UPDATE_LOCK_ALREADY_HELD;
+		break;
+
+	case PRM_CMD_END_TRANSACTION:
+
+		module = find_prm_module(&buffer->handler_guid);
+		if (!module)
+			goto invalid_guid;
+
+		if (module->updatable)
+			buffer->prm_status = UPDATE_UNLOCK_WITHOUT_LOCK;
+		else
+			module->updatable = true;
+		break;
+
+	default:
+
+		buffer->prm_status = INVALID_PRM_COMMAND;
+		break;
+	}
+
+	return AE_OK;
+
+invalid_guid:
+	buffer->prm_status = PRM_HANDLER_GUID_NOT_FOUND;
+	return AE_OK;
+}
+
+void __init init_prmt(void)
+{
+	struct acpi_table_header *tbl;
+	acpi_status status;
+	int mc;
+
+	status = acpi_get_table(ACPI_SIG_PRMT, 0, &tbl);
+	if (ACPI_FAILURE(status))
+		return;
+
+	mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) +
+					  sizeof (struct acpi_table_prmt_header),
+					  0, acpi_parse_prmt, 0);
+	acpi_put_table(tbl);
+	/*
+	 * Return immediately if PRMT table is not present or no PRM module found.
+	 */
+	if (mc <= 0)
+		return;
+
+	pr_info("PRM: found %u modules\n", mc);
+
+	if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+		pr_err("PRM: EFI runtime services unavailable\n");
+		return;
+	}
+
+	status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
+						    ACPI_ADR_SPACE_PLATFORM_RT,
+						    &acpi_platformrt_space_handler,
+						    NULL, NULL);
+	if (ACPI_FAILURE(status))
+		pr_alert("PRM: OperationRegion handler could not be installed\n");
+}