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, 219 insertions, 0 deletions

diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h
new file mode 100644
index 000000000..c083a1d71
--- /dev/null
+++ b/include/drm/drm_gem_vram_helper.h
@@ -0,0 +1,219 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef DRM_GEM_VRAM_HELPER_H
+#define DRM_GEM_VRAM_HELPER_H
+
+#include <drm/drm_file.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_ttm_helper.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_modes.h>
+#include <drm/ttm/ttm_bo_api.h>
+#include <drm/ttm/ttm_bo_driver.h>
+
+#include <linux/container_of.h>
+#include <linux/iosys-map.h>
+
+struct drm_mode_create_dumb;
+struct drm_plane;
+struct drm_plane_state;
+struct drm_simple_display_pipe;
+struct filp;
+struct vm_area_struct;
+
+#define DRM_GEM_VRAM_PL_FLAG_SYSTEM	(1 << 0)
+#define DRM_GEM_VRAM_PL_FLAG_VRAM	(1 << 1)
+#define DRM_GEM_VRAM_PL_FLAG_TOPDOWN	(1 << 2)
+
+/*
+ * Buffer-object helpers
+ */
+
+/**
+ * struct drm_gem_vram_object - GEM object backed by VRAM
+ * @bo:		TTM buffer object
+ * @map:	Mapping information for @bo
+ * @placement:	TTM placement information. Supported placements are \
+	%TTM_PL_VRAM and %TTM_PL_SYSTEM
+ * @placements:	TTM placement information.
+ *
+ * The type struct drm_gem_vram_object represents a GEM object that is
+ * backed by VRAM. It can be used for simple framebuffer devices with
+ * dedicated memory. The buffer object can be evicted to system memory if
+ * video memory becomes scarce.
+ *
+ * GEM VRAM objects perform reference counting for pin and mapping
+ * operations. So a buffer object that has been pinned N times with
+ * drm_gem_vram_pin() must be unpinned N times with
+ * drm_gem_vram_unpin(). The same applies to pairs of
+ * drm_gem_vram_kmap() and drm_gem_vram_kunmap(), as well as pairs of
+ * drm_gem_vram_vmap() and drm_gem_vram_vunmap().
+ */
+struct drm_gem_vram_object {
+	struct ttm_buffer_object bo;
+	struct iosys_map map;
+
+	/**
+	 * @vmap_use_count:
+	 *
+	 * Reference count on the virtual address.
+	 * The address are un-mapped when the count reaches zero.
+	 */
+	unsigned int vmap_use_count;
+
+	/* Supported placements are %TTM_PL_VRAM and %TTM_PL_SYSTEM */
+	struct ttm_placement placement;
+	struct ttm_place placements[2];
+};
+
+/**
+ * drm_gem_vram_of_bo - Returns the container of type
+ * &struct drm_gem_vram_object for field bo.
+ * @bo:		the VRAM buffer object
+ * Returns:	The containing GEM VRAM object
+ */
+static inline struct drm_gem_vram_object *drm_gem_vram_of_bo(
+	struct ttm_buffer_object *bo)
+{
+	return container_of(bo, struct drm_gem_vram_object, bo);
+}
+
+/**
+ * drm_gem_vram_of_gem - Returns the container of type
+ * &struct drm_gem_vram_object for field gem.
+ * @gem:	the GEM object
+ * Returns:	The containing GEM VRAM object
+ */
+static inline struct drm_gem_vram_object *drm_gem_vram_of_gem(
+	struct drm_gem_object *gem)
+{
+	return container_of(gem, struct drm_gem_vram_object, bo.base);
+}
+
+struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev,
+						size_t size,
+						unsigned long pg_align);
+void drm_gem_vram_put(struct drm_gem_vram_object *gbo);
+s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo);
+int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag);
+int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo);
+int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct iosys_map *map);
+void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo,
+			 struct iosys_map *map);
+
+int drm_gem_vram_fill_create_dumb(struct drm_file *file,
+				  struct drm_device *dev,
+				  unsigned long pg_align,
+				  unsigned long pitch_align,
+				  struct drm_mode_create_dumb *args);
+
+/*
+ * Helpers for struct drm_driver
+ */
+
+int drm_gem_vram_driver_dumb_create(struct drm_file *file,
+				    struct drm_device *dev,
+				    struct drm_mode_create_dumb *args);
+
+/*
+ * Helpers for struct drm_plane_helper_funcs
+ */
+int
+drm_gem_vram_plane_helper_prepare_fb(struct drm_plane *plane,
+				     struct drm_plane_state *new_state);
+void
+drm_gem_vram_plane_helper_cleanup_fb(struct drm_plane *plane,
+				     struct drm_plane_state *old_state);
+
+/**
+ * DRM_GEM_VRAM_PLANE_HELPER_FUNCS -
+ *	Initializes struct drm_plane_helper_funcs for VRAM handling
+ *
+ * Drivers may use GEM BOs as VRAM helpers for the framebuffer memory. This
+ * macro initializes struct drm_plane_helper_funcs to use the respective helper
+ * functions.
+ */
+#define DRM_GEM_VRAM_PLANE_HELPER_FUNCS \
+	.prepare_fb = drm_gem_vram_plane_helper_prepare_fb, \
+	.cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb
+
+/*
+ * Helpers for struct drm_simple_display_pipe_funcs
+ */
+
+int drm_gem_vram_simple_display_pipe_prepare_fb(
+	struct drm_simple_display_pipe *pipe,
+	struct drm_plane_state *new_state);
+
+void drm_gem_vram_simple_display_pipe_cleanup_fb(
+	struct drm_simple_display_pipe *pipe,
+	struct drm_plane_state *old_state);
+
+/**
+ * define DRM_GEM_VRAM_DRIVER - default callback functions for \
+	&struct drm_driver
+ *
+ * Drivers that use VRAM MM and GEM VRAM can use this macro to initialize
+ * &struct drm_driver with default functions.
+ */
+#define DRM_GEM_VRAM_DRIVER \
+	.debugfs_init             = drm_vram_mm_debugfs_init, \
+	.dumb_create		  = drm_gem_vram_driver_dumb_create, \
+	.dumb_map_offset	  = drm_gem_ttm_dumb_map_offset, \
+	.gem_prime_mmap		  = drm_gem_prime_mmap
+
+/*
+ *  VRAM memory manager
+ */
+
+/**
+ * struct drm_vram_mm - An instance of VRAM MM
+ * @vram_base:	Base address of the managed video memory
+ * @vram_size:	Size of the managed video memory in bytes
+ * @bdev:	The TTM BO device.
+ * @funcs:	TTM BO functions
+ *
+ * The fields &struct drm_vram_mm.vram_base and
+ * &struct drm_vram_mm.vrm_size are managed by VRAM MM, but are
+ * available for public read access. Use the field
+ * &struct drm_vram_mm.bdev to access the TTM BO device.
+ */
+struct drm_vram_mm {
+	uint64_t vram_base;
+	size_t vram_size;
+
+	struct ttm_device bdev;
+};
+
+/**
+ * drm_vram_mm_of_bdev() - \
+	Returns the container of type &struct ttm_device for field bdev.
+ * @bdev:	the TTM BO device
+ *
+ * Returns:
+ * The containing instance of &struct drm_vram_mm
+ */
+static inline struct drm_vram_mm *drm_vram_mm_of_bdev(
+	struct ttm_device *bdev)
+{
+	return container_of(bdev, struct drm_vram_mm, bdev);
+}
+
+void drm_vram_mm_debugfs_init(struct drm_minor *minor);
+
+/*
+ * Helpers for integration with struct drm_device
+ */
+
+int drmm_vram_helper_init(struct drm_device *dev, uint64_t vram_base,
+			  size_t vram_size);
+
+/*
+ * Mode-config helpers
+ */
+
+enum drm_mode_status
+drm_vram_helper_mode_valid(struct drm_device *dev,
+			   const struct drm_display_mode *mode);
+
+#endif