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, 244 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_vma_resource.h b/drivers/gpu/drm/i915/i915_vma_resource.h
new file mode 100644
index 000000000..06923d181
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_vma_resource.h
@@ -0,0 +1,244 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __I915_VMA_RESOURCE_H__
+#define __I915_VMA_RESOURCE_H__
+
+#include <linux/dma-fence.h>
+#include <linux/refcount.h>
+
+#include "i915_gem.h"
+#include "i915_scatterlist.h"
+#include "i915_sw_fence.h"
+#include "intel_runtime_pm.h"
+
+struct intel_memory_region;
+
+struct i915_page_sizes {
+	/**
+	 * The sg mask of the pages sg_table. i.e the mask of
+	 * the lengths for each sg entry.
+	 */
+	unsigned int phys;
+
+	/**
+	 * The gtt page sizes we are allowed to use given the
+	 * sg mask and the supported page sizes. This will
+	 * express the smallest unit we can use for the whole
+	 * object, as well as the larger sizes we may be able
+	 * to use opportunistically.
+	 */
+	unsigned int sg;
+};
+
+/**
+ * struct i915_vma_resource - Snapshotted unbind information.
+ * @unbind_fence: Fence to mark unbinding complete. Note that this fence
+ * is not considered published until unbind is scheduled, and as such it
+ * is illegal to access this fence before scheduled unbind other than
+ * for refcounting.
+ * @lock: The @unbind_fence lock.
+ * @hold_count: Number of holders blocking the fence from finishing.
+ * The vma itself is keeping a hold, which is released when unbind
+ * is scheduled.
+ * @work: Work struct for deferred unbind work.
+ * @chain: Pointer to struct i915_sw_fence used to await dependencies.
+ * @rb: Rb node for the vm's pending unbind interval tree.
+ * @__subtree_last: Interval tree private member.
+ * @vm: non-refcounted pointer to the vm. This is for internal use only and
+ * this member is cleared after vm_resource unbind.
+ * @mr: The memory region of the object pointed to by the vma.
+ * @ops: Pointer to the backend i915_vma_ops.
+ * @private: Bind backend private info.
+ * @start: Offset into the address space of bind range start.
+ * @node_size: Size of the allocated range manager node.
+ * @vma_size: Bind size.
+ * @page_sizes_gtt: Resulting page sizes from the bind operation.
+ * @bound_flags: Flags indicating binding status.
+ * @allocated: Backend private data. TODO: Should move into @private.
+ * @immediate_unbind: Unbind can be done immediately and doesn't need to be
+ * deferred to a work item awaiting unsignaled fences. This is a hack.
+ * (dma_fence_work uses a fence flag for this, but this seems slightly
+ * cleaner).
+ * @needs_wakeref: Whether a wakeref is needed during unbind. Since we can't
+ * take a wakeref in the dma-fence signalling critical path, it needs to be
+ * taken when the unbind is scheduled.
+ * @skip_pte_rewrite: During ggtt suspend and vm takedown pte rewriting
+ * needs to be skipped for unbind.
+ * @tlb: pointer for obj->mm.tlb, if async unbind. Otherwise, NULL
+ *
+ * The lifetime of a struct i915_vma_resource is from a binding request to
+ * the actual possible asynchronous unbind has completed.
+ */
+struct i915_vma_resource {
+	struct dma_fence unbind_fence;
+	/* See above for description of the lock. */
+	spinlock_t lock;
+	refcount_t hold_count;
+	struct work_struct work;
+	struct i915_sw_fence chain;
+	struct rb_node rb;
+	u64 __subtree_last;
+	struct i915_address_space *vm;
+	intel_wakeref_t wakeref;
+
+	/**
+	 * struct i915_vma_bindinfo - Information needed for async bind
+	 * only but that can be dropped after the bind has taken place.
+	 * Consider making this a separate argument to the bind_vma
+	 * op, coalescing with other arguments like vm, stash, cache_level
+	 * and flags
+	 * @pages: The pages sg-table.
+	 * @page_sizes: Page sizes of the pages.
+	 * @pages_rsgt: Refcounted sg-table when delayed object destruction
+	 * is supported. May be NULL.
+	 * @readonly: Whether the vma should be bound read-only.
+	 * @lmem: Whether the vma points to lmem.
+	 */
+	struct i915_vma_bindinfo {
+		struct sg_table *pages;
+		struct i915_page_sizes page_sizes;
+		struct i915_refct_sgt *pages_rsgt;
+		bool readonly:1;
+		bool lmem:1;
+	} bi;
+
+#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+	struct intel_memory_region *mr;
+#endif
+	const struct i915_vma_ops *ops;
+	void *private;
+	u64 start;
+	u64 node_size;
+	u64 vma_size;
+	u32 page_sizes_gtt;
+
+	u32 bound_flags;
+	bool allocated:1;
+	bool immediate_unbind:1;
+	bool needs_wakeref:1;
+	bool skip_pte_rewrite:1;
+
+	u32 *tlb;
+};
+
+bool i915_vma_resource_hold(struct i915_vma_resource *vma_res,
+			    bool *lockdep_cookie);
+
+void i915_vma_resource_unhold(struct i915_vma_resource *vma_res,
+			      bool lockdep_cookie);
+
+struct i915_vma_resource *i915_vma_resource_alloc(void);
+
+void i915_vma_resource_free(struct i915_vma_resource *vma_res);
+
+struct dma_fence *i915_vma_resource_unbind(struct i915_vma_resource *vma_res,
+					   u32 *tlb);
+
+void __i915_vma_resource_init(struct i915_vma_resource *vma_res);
+
+/**
+ * i915_vma_resource_get - Take a reference on a vma resource
+ * @vma_res: The vma resource on which to take a reference.
+ *
+ * Return: The @vma_res pointer
+ */
+static inline struct i915_vma_resource
+*i915_vma_resource_get(struct i915_vma_resource *vma_res)
+{
+	dma_fence_get(&vma_res->unbind_fence);
+	return vma_res;
+}
+
+/**
+ * i915_vma_resource_put - Release a reference to a struct i915_vma_resource
+ * @vma_res: The resource
+ */
+static inline void i915_vma_resource_put(struct i915_vma_resource *vma_res)
+{
+	dma_fence_put(&vma_res->unbind_fence);
+}
+
+/**
+ * i915_vma_resource_init - Initialize a vma resource.
+ * @vma_res: The vma resource to initialize
+ * @vm: Pointer to the vm.
+ * @pages: The pages sg-table.
+ * @page_sizes: Page sizes of the pages.
+ * @pages_rsgt: Pointer to a struct i915_refct_sgt of an object with
+ * delayed destruction.
+ * @readonly: Whether the vma should be bound read-only.
+ * @lmem: Whether the vma points to lmem.
+ * @mr: The memory region of the object the vma points to.
+ * @ops: The backend ops.
+ * @private: Bind backend private info.
+ * @start: Offset into the address space of bind range start.
+ * @node_size: Size of the allocated range manager node.
+ * @size: Bind size.
+ *
+ * Initializes a vma resource allocated using i915_vma_resource_alloc().
+ * The reason for having separate allocate and initialize function is that
+ * initialization may need to be performed from under a lock where
+ * allocation is not allowed.
+ */
+static inline void i915_vma_resource_init(struct i915_vma_resource *vma_res,
+					  struct i915_address_space *vm,
+					  struct sg_table *pages,
+					  const struct i915_page_sizes *page_sizes,
+					  struct i915_refct_sgt *pages_rsgt,
+					  bool readonly,
+					  bool lmem,
+					  struct intel_memory_region *mr,
+					  const struct i915_vma_ops *ops,
+					  void *private,
+					  u64 start,
+					  u64 node_size,
+					  u64 size)
+{
+	__i915_vma_resource_init(vma_res);
+	vma_res->vm = vm;
+	vma_res->bi.pages = pages;
+	vma_res->bi.page_sizes = *page_sizes;
+	if (pages_rsgt)
+		vma_res->bi.pages_rsgt = i915_refct_sgt_get(pages_rsgt);
+	vma_res->bi.readonly = readonly;
+	vma_res->bi.lmem = lmem;
+#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+	vma_res->mr = mr;
+#endif
+	vma_res->ops = ops;
+	vma_res->private = private;
+	vma_res->start = start;
+	vma_res->node_size = node_size;
+	vma_res->vma_size = size;
+}
+
+static inline void i915_vma_resource_fini(struct i915_vma_resource *vma_res)
+{
+	GEM_BUG_ON(refcount_read(&vma_res->hold_count) != 1);
+	if (vma_res->bi.pages_rsgt)
+		i915_refct_sgt_put(vma_res->bi.pages_rsgt);
+	i915_sw_fence_fini(&vma_res->chain);
+}
+
+int i915_vma_resource_bind_dep_sync(struct i915_address_space *vm,
+				    u64 first,
+				    u64 last,
+				    bool intr);
+
+int i915_vma_resource_bind_dep_await(struct i915_address_space *vm,
+				     struct i915_sw_fence *sw_fence,
+				     u64 first,
+				     u64 last,
+				     bool intr,
+				     gfp_t gfp);
+
+void i915_vma_resource_bind_dep_sync_all(struct i915_address_space *vm);
+
+void i915_vma_resource_module_exit(void);
+
+int i915_vma_resource_module_init(void);
+
+#endif