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, 302 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_fb_pin.c b/drivers/gpu/drm/i915/display/intel_fb_pin.c
new file mode 100644
index 000000000..6900acbb1
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_fb_pin.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+/**
+ * DOC: display pinning helpers
+ */
+
+#include "gem/i915_gem_domain.h"
+#include "gem/i915_gem_object.h"
+
+#include "i915_drv.h"
+#include "intel_display_types.h"
+#include "intel_dpt.h"
+#include "intel_fb.h"
+#include "intel_fb_pin.h"
+
+static struct i915_vma *
+intel_pin_fb_obj_dpt(struct drm_framebuffer *fb,
+		     const struct i915_gtt_view *view,
+		     bool uses_fence,
+		     unsigned long *out_flags,
+		     struct i915_address_space *vm)
+{
+	struct drm_device *dev = fb->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	struct i915_gem_ww_ctx ww;
+	struct i915_vma *vma;
+	u32 alignment;
+	int ret;
+
+	/*
+	 * We are not syncing against the binding (and potential migrations)
+	 * below, so this vm must never be async.
+	 */
+	GEM_WARN_ON(vm->bind_async_flags);
+
+	if (WARN_ON(!i915_gem_object_is_framebuffer(obj)))
+		return ERR_PTR(-EINVAL);
+
+	alignment = 4096 * 512;
+
+	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+	for_i915_gem_ww(&ww, ret, true) {
+		ret = i915_gem_object_lock(obj, &ww);
+		if (ret)
+			continue;
+
+		if (HAS_LMEM(dev_priv)) {
+			unsigned int flags = obj->flags;
+
+			/*
+			 * For this type of buffer we need to able to read from the CPU
+			 * the clear color value found in the buffer, hence we need to
+			 * ensure it is always in the mappable part of lmem, if this is
+			 * a small-bar device.
+			 */
+			if (intel_fb_rc_ccs_cc_plane(fb) >= 0)
+				flags &= ~I915_BO_ALLOC_GPU_ONLY;
+			ret = __i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0,
+							flags);
+			if (ret)
+				continue;
+		}
+
+		ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE);
+		if (ret)
+			continue;
+
+		vma = i915_vma_instance(obj, vm, view);
+		if (IS_ERR(vma)) {
+			ret = PTR_ERR(vma);
+			continue;
+		}
+
+		if (i915_vma_misplaced(vma, 0, alignment, 0)) {
+			ret = i915_vma_unbind(vma);
+			if (ret)
+				continue;
+		}
+
+		ret = i915_vma_pin_ww(vma, &ww, 0, alignment, PIN_GLOBAL);
+		if (ret)
+			continue;
+	}
+	if (ret) {
+		vma = ERR_PTR(ret);
+		goto err;
+	}
+
+	vma->display_alignment = max_t(u64, vma->display_alignment, alignment);
+
+	i915_gem_object_flush_if_display(obj);
+
+	i915_vma_get(vma);
+err:
+	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+
+	return vma;
+}
+
+struct i915_vma *
+intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
+			   bool phys_cursor,
+			   const struct i915_gtt_view *view,
+			   bool uses_fence,
+			   unsigned long *out_flags)
+{
+	struct drm_device *dev = fb->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	intel_wakeref_t wakeref;
+	struct i915_gem_ww_ctx ww;
+	struct i915_vma *vma;
+	unsigned int pinctl;
+	u32 alignment;
+	int ret;
+
+	if (drm_WARN_ON(dev, !i915_gem_object_is_framebuffer(obj)))
+		return ERR_PTR(-EINVAL);
+
+	if (phys_cursor)
+		alignment = intel_cursor_alignment(dev_priv);
+	else
+		alignment = intel_surf_alignment(fb, 0);
+	if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment)))
+		return ERR_PTR(-EINVAL);
+
+	/* Note that the w/a also requires 64 PTE of padding following the
+	 * bo. We currently fill all unused PTE with the shadow page and so
+	 * we should always have valid PTE following the scanout preventing
+	 * the VT-d warning.
+	 */
+	if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
+		alignment = 256 * 1024;
+
+	/*
+	 * Global gtt pte registers are special registers which actually forward
+	 * writes to a chunk of system memory. Which means that there is no risk
+	 * that the register values disappear as soon as we call
+	 * intel_runtime_pm_put(), so it is correct to wrap only the
+	 * pin/unpin/fence and not more.
+	 */
+	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
+
+	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+	/*
+	 * Valleyview is definitely limited to scanning out the first
+	 * 512MiB. Lets presume this behaviour was inherited from the
+	 * g4x display engine and that all earlier gen are similarly
+	 * limited. Testing suggests that it is a little more
+	 * complicated than this. For example, Cherryview appears quite
+	 * happy to scanout from anywhere within its global aperture.
+	 */
+	pinctl = 0;
+	if (HAS_GMCH(dev_priv))
+		pinctl |= PIN_MAPPABLE;
+
+	i915_gem_ww_ctx_init(&ww, true);
+retry:
+	ret = i915_gem_object_lock(obj, &ww);
+	if (!ret && phys_cursor)
+		ret = i915_gem_object_attach_phys(obj, alignment);
+	else if (!ret && HAS_LMEM(dev_priv))
+		ret = i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0);
+	if (!ret)
+		ret = i915_gem_object_pin_pages(obj);
+	if (ret)
+		goto err;
+
+	vma = i915_gem_object_pin_to_display_plane(obj, &ww, alignment,
+						   view, pinctl);
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto err_unpin;
+	}
+
+	if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
+		/*
+		 * Install a fence for tiled scan-out. Pre-i965 always needs a
+		 * fence, whereas 965+ only requires a fence if using
+		 * framebuffer compression.  For simplicity, we always, when
+		 * possible, install a fence as the cost is not that onerous.
+		 *
+		 * If we fail to fence the tiled scanout, then either the
+		 * modeset will reject the change (which is highly unlikely as
+		 * the affected systems, all but one, do not have unmappable
+		 * space) or we will not be able to enable full powersaving
+		 * techniques (also likely not to apply due to various limits
+		 * FBC and the like impose on the size of the buffer, which
+		 * presumably we violated anyway with this unmappable buffer).
+		 * Anyway, it is presumably better to stumble onwards with
+		 * something and try to run the system in a "less than optimal"
+		 * mode that matches the user configuration.
+		 */
+		ret = i915_vma_pin_fence(vma);
+		if (ret != 0 && DISPLAY_VER(dev_priv) < 4) {
+			i915_vma_unpin(vma);
+			goto err_unpin;
+		}
+		ret = 0;
+
+		if (vma->fence)
+			*out_flags |= PLANE_HAS_FENCE;
+	}
+
+	i915_vma_get(vma);
+
+err_unpin:
+	i915_gem_object_unpin_pages(obj);
+err:
+	if (ret == -EDEADLK) {
+		ret = i915_gem_ww_ctx_backoff(&ww);
+		if (!ret)
+			goto retry;
+	}
+	i915_gem_ww_ctx_fini(&ww);
+	if (ret)
+		vma = ERR_PTR(ret);
+
+	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
+	return vma;
+}
+
+void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
+{
+	if (flags & PLANE_HAS_FENCE)
+		i915_vma_unpin_fence(vma);
+	i915_vma_unpin(vma);
+	i915_vma_put(vma);
+}
+
+int intel_plane_pin_fb(struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct i915_vma *vma;
+	bool phys_cursor =
+		plane->id == PLANE_CURSOR &&
+		INTEL_INFO(dev_priv)->display.cursor_needs_physical;
+
+	if (!intel_fb_uses_dpt(fb)) {
+		vma = intel_pin_and_fence_fb_obj(fb, phys_cursor,
+						 &plane_state->view.gtt,
+						 intel_plane_uses_fence(plane_state),
+						 &plane_state->flags);
+		if (IS_ERR(vma))
+			return PTR_ERR(vma);
+
+		plane_state->ggtt_vma = vma;
+	} else {
+		struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+		vma = intel_dpt_pin(intel_fb->dpt_vm);
+		if (IS_ERR(vma))
+			return PTR_ERR(vma);
+
+		plane_state->ggtt_vma = vma;
+
+		vma = intel_pin_fb_obj_dpt(fb, &plane_state->view.gtt, false,
+					   &plane_state->flags, intel_fb->dpt_vm);
+		if (IS_ERR(vma)) {
+			intel_dpt_unpin(intel_fb->dpt_vm);
+			plane_state->ggtt_vma = NULL;
+			return PTR_ERR(vma);
+		}
+
+		plane_state->dpt_vma = vma;
+
+		WARN_ON(plane_state->ggtt_vma == plane_state->dpt_vma);
+	}
+
+	return 0;
+}
+
+void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state)
+{
+	struct drm_framebuffer *fb = old_plane_state->hw.fb;
+	struct i915_vma *vma;
+
+	if (!intel_fb_uses_dpt(fb)) {
+		vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+		if (vma)
+			intel_unpin_fb_vma(vma, old_plane_state->flags);
+	} else {
+		struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+		vma = fetch_and_zero(&old_plane_state->dpt_vma);
+		if (vma)
+			intel_unpin_fb_vma(vma, old_plane_state->flags);
+
+		vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+		if (vma)
+			intel_dpt_unpin(intel_fb->dpt_vm);
+	}
+}