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, 327 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/intel_gsc.c
new file mode 100644
index 000000000..976fdf27e
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gsc.c
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright(c) 2019-2022, Intel Corporation. All rights reserved.
+ */
+
+#include <linux/irq.h>
+#include <linux/mei_aux.h>
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "gem/i915_gem_lmem.h"
+#include "gem/i915_gem_region.h"
+#include "gt/intel_gsc.h"
+#include "gt/intel_gt.h"
+
+#define GSC_BAR_LENGTH  0x00000FFC
+
+static void gsc_irq_mask(struct irq_data *d)
+{
+	/* generic irq handling */
+}
+
+static void gsc_irq_unmask(struct irq_data *d)
+{
+	/* generic irq handling */
+}
+
+static struct irq_chip gsc_irq_chip = {
+	.name = "gsc_irq_chip",
+	.irq_mask = gsc_irq_mask,
+	.irq_unmask = gsc_irq_unmask,
+};
+
+static int gsc_irq_init(int irq)
+{
+	irq_set_chip_and_handler_name(irq, &gsc_irq_chip,
+				      handle_simple_irq, "gsc_irq_handler");
+
+	return irq_set_chip_data(irq, NULL);
+}
+
+static int
+gsc_ext_om_alloc(struct intel_gsc *gsc, struct intel_gsc_intf *intf, size_t size)
+{
+	struct intel_gt *gt = gsc_to_gt(gsc);
+	struct drm_i915_gem_object *obj;
+	int err;
+
+	obj = i915_gem_object_create_lmem(gt->i915, size,
+					  I915_BO_ALLOC_CONTIGUOUS |
+					  I915_BO_ALLOC_CPU_CLEAR);
+	if (IS_ERR(obj)) {
+		drm_err(&gt->i915->drm, "Failed to allocate gsc memory\n");
+		return PTR_ERR(obj);
+	}
+
+	err = i915_gem_object_pin_pages_unlocked(obj);
+	if (err) {
+		drm_err(&gt->i915->drm, "Failed to pin pages for gsc memory\n");
+		goto out_put;
+	}
+
+	intf->gem_obj = obj;
+
+	return 0;
+
+out_put:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+static void gsc_ext_om_destroy(struct intel_gsc_intf *intf)
+{
+	struct drm_i915_gem_object *obj = fetch_and_zero(&intf->gem_obj);
+
+	if (!obj)
+		return;
+
+	if (i915_gem_object_has_pinned_pages(obj))
+		i915_gem_object_unpin_pages(obj);
+
+	i915_gem_object_put(obj);
+}
+
+struct gsc_def {
+	const char *name;
+	unsigned long bar;
+	size_t bar_size;
+	bool use_polling;
+	bool slow_firmware;
+	size_t lmem_size;
+};
+
+/* gsc resources and definitions (HECI1 and HECI2) */
+static const struct gsc_def gsc_def_dg1[] = {
+	{
+		/* HECI1 not yet implemented. */
+	},
+	{
+		.name = "mei-gscfi",
+		.bar = DG1_GSC_HECI2_BASE,
+		.bar_size = GSC_BAR_LENGTH,
+	}
+};
+
+static const struct gsc_def gsc_def_xehpsdv[] = {
+	{
+		/* HECI1 not enabled on the device. */
+	},
+	{
+		.name = "mei-gscfi",
+		.bar = DG1_GSC_HECI2_BASE,
+		.bar_size = GSC_BAR_LENGTH,
+		.use_polling = true,
+		.slow_firmware = true,
+	}
+};
+
+static const struct gsc_def gsc_def_dg2[] = {
+	{
+		.name = "mei-gsc",
+		.bar = DG2_GSC_HECI1_BASE,
+		.bar_size = GSC_BAR_LENGTH,
+		.lmem_size = SZ_4M,
+	},
+	{
+		.name = "mei-gscfi",
+		.bar = DG2_GSC_HECI2_BASE,
+		.bar_size = GSC_BAR_LENGTH,
+	}
+};
+
+static void gsc_release_dev(struct device *dev)
+{
+	struct auxiliary_device *aux_dev = to_auxiliary_dev(dev);
+	struct mei_aux_device *adev = auxiliary_dev_to_mei_aux_dev(aux_dev);
+
+	kfree(adev);
+}
+
+static void gsc_destroy_one(struct drm_i915_private *i915,
+			    struct intel_gsc *gsc, unsigned int intf_id)
+{
+	struct intel_gsc_intf *intf = &gsc->intf[intf_id];
+
+	if (intf->adev) {
+		struct auxiliary_device *aux_dev = &intf->adev->aux_dev;
+
+		if (intf_id == 0)
+			intel_huc_unregister_gsc_notifier(&gsc_to_gt(gsc)->uc.huc,
+							  aux_dev->dev.bus);
+
+		auxiliary_device_delete(aux_dev);
+		auxiliary_device_uninit(aux_dev);
+		intf->adev = NULL;
+	}
+
+	if (intf->irq >= 0)
+		irq_free_desc(intf->irq);
+	intf->irq = -1;
+
+	gsc_ext_om_destroy(intf);
+}
+
+static void gsc_init_one(struct drm_i915_private *i915, struct intel_gsc *gsc,
+			 unsigned int intf_id)
+{
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	struct mei_aux_device *adev;
+	struct auxiliary_device *aux_dev;
+	const struct gsc_def *def;
+	struct intel_gsc_intf *intf = &gsc->intf[intf_id];
+	int ret;
+
+	intf->irq = -1;
+	intf->id = intf_id;
+
+	if (intf_id == 0 && !HAS_HECI_PXP(i915))
+		return;
+
+	if (IS_DG1(i915)) {
+		def = &gsc_def_dg1[intf_id];
+	} else if (IS_XEHPSDV(i915)) {
+		def = &gsc_def_xehpsdv[intf_id];
+	} else if (IS_DG2(i915)) {
+		def = &gsc_def_dg2[intf_id];
+	} else {
+		drm_warn_once(&i915->drm, "Unknown platform\n");
+		return;
+	}
+
+	if (!def->name) {
+		drm_warn_once(&i915->drm, "HECI%d is not implemented!\n", intf_id + 1);
+		return;
+	}
+
+	/* skip irq initialization */
+	if (def->use_polling)
+		goto add_device;
+
+	intf->irq = irq_alloc_desc(0);
+	if (intf->irq < 0) {
+		drm_err(&i915->drm, "gsc irq error %d\n", intf->irq);
+		goto fail;
+	}
+
+	ret = gsc_irq_init(intf->irq);
+	if (ret < 0) {
+		drm_err(&i915->drm, "gsc irq init failed %d\n", ret);
+		goto fail;
+	}
+
+add_device:
+	adev = kzalloc(sizeof(*adev), GFP_KERNEL);
+	if (!adev)
+		goto fail;
+
+	if (def->lmem_size) {
+		drm_dbg(&i915->drm, "setting up GSC lmem\n");
+
+		if (gsc_ext_om_alloc(gsc, intf, def->lmem_size)) {
+			drm_err(&i915->drm, "setting up gsc extended operational memory failed\n");
+			kfree(adev);
+			goto fail;
+		}
+
+		adev->ext_op_mem.start = i915_gem_object_get_dma_address(intf->gem_obj, 0);
+		adev->ext_op_mem.end = adev->ext_op_mem.start + def->lmem_size;
+	}
+
+	adev->irq = intf->irq;
+	adev->bar.parent = &pdev->resource[0];
+	adev->bar.start = def->bar + pdev->resource[0].start;
+	adev->bar.end = adev->bar.start + def->bar_size - 1;
+	adev->bar.flags = IORESOURCE_MEM;
+	adev->bar.desc = IORES_DESC_NONE;
+	adev->slow_firmware = def->slow_firmware;
+
+	aux_dev = &adev->aux_dev;
+	aux_dev->name = def->name;
+	aux_dev->id = (pci_domain_nr(pdev->bus) << 16) |
+		      PCI_DEVID(pdev->bus->number, pdev->devfn);
+	aux_dev->dev.parent = &pdev->dev;
+	aux_dev->dev.release = gsc_release_dev;
+
+	ret = auxiliary_device_init(aux_dev);
+	if (ret < 0) {
+		drm_err(&i915->drm, "gsc aux init failed %d\n", ret);
+		kfree(adev);
+		goto fail;
+	}
+
+	intf->adev = adev; /* needed by the notifier */
+
+	if (intf_id == 0)
+		intel_huc_register_gsc_notifier(&gsc_to_gt(gsc)->uc.huc,
+						aux_dev->dev.bus);
+
+	ret = auxiliary_device_add(aux_dev);
+	if (ret < 0) {
+		drm_err(&i915->drm, "gsc aux add failed %d\n", ret);
+		if (intf_id == 0)
+			intel_huc_unregister_gsc_notifier(&gsc_to_gt(gsc)->uc.huc,
+							  aux_dev->dev.bus);
+		intf->adev = NULL;
+
+		/* adev will be freed with the put_device() and .release sequence */
+		auxiliary_device_uninit(aux_dev);
+		goto fail;
+	}
+
+	return;
+fail:
+	gsc_destroy_one(i915, gsc, intf->id);
+}
+
+static void gsc_irq_handler(struct intel_gt *gt, unsigned int intf_id)
+{
+	int ret;
+
+	if (intf_id >= INTEL_GSC_NUM_INTERFACES) {
+		drm_warn_once(&gt->i915->drm, "GSC irq: intf_id %d is out of range", intf_id);
+		return;
+	}
+
+	if (!HAS_HECI_GSC(gt->i915)) {
+		drm_warn_once(&gt->i915->drm, "GSC irq: not supported");
+		return;
+	}
+
+	if (gt->gsc.intf[intf_id].irq < 0)
+		return;
+
+	ret = generic_handle_irq(gt->gsc.intf[intf_id].irq);
+	if (ret)
+		drm_err_ratelimited(&gt->i915->drm, "error handling GSC irq: %d\n", ret);
+}
+
+void intel_gsc_irq_handler(struct intel_gt *gt, u32 iir)
+{
+	if (iir & GSC_IRQ_INTF(0))
+		gsc_irq_handler(gt, 0);
+	if (iir & GSC_IRQ_INTF(1))
+		gsc_irq_handler(gt, 1);
+}
+
+void intel_gsc_init(struct intel_gsc *gsc, struct drm_i915_private *i915)
+{
+	unsigned int i;
+
+	if (!HAS_HECI_GSC(i915))
+		return;
+
+	for (i = 0; i < INTEL_GSC_NUM_INTERFACES; i++)
+		gsc_init_one(i915, gsc, i);
+}
+
+void intel_gsc_fini(struct intel_gsc *gsc)
+{
+	struct intel_gt *gt = gsc_to_gt(gsc);
+	unsigned int i;
+
+	if (!HAS_HECI_GSC(gt->i915))
+		return;
+
+	for (i = 0; i < INTEL_GSC_NUM_INTERFACES; i++)
+		gsc_destroy_one(gt->i915, gsc, i);
+}