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, 221 insertions, 0 deletions

diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
new file mode 100644
index 000000000..7338b84bc
--- /dev/null
+++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2012 Sascha Hauer, Pengutronix
+ * Copyright 2019,2020,2022 NXP
+ */
+
+#include <linux/media-bus-format.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+
+#include "imx-ldb-helper.h"
+
+bool ldb_channel_is_single_link(struct ldb_channel *ldb_ch)
+{
+	return ldb_ch->link_type == LDB_CH_SINGLE_LINK;
+}
+
+bool ldb_channel_is_split_link(struct ldb_channel *ldb_ch)
+{
+	return ldb_ch->link_type == LDB_CH_DUAL_LINK_EVEN_ODD_PIXELS ||
+	       ldb_ch->link_type == LDB_CH_DUAL_LINK_ODD_EVEN_PIXELS;
+}
+
+int ldb_bridge_atomic_check_helper(struct drm_bridge *bridge,
+				   struct drm_bridge_state *bridge_state,
+				   struct drm_crtc_state *crtc_state,
+				   struct drm_connector_state *conn_state)
+{
+	struct ldb_channel *ldb_ch = bridge->driver_private;
+
+	ldb_ch->in_bus_format = bridge_state->input_bus_cfg.format;
+	ldb_ch->out_bus_format = bridge_state->output_bus_cfg.format;
+
+	return 0;
+}
+
+void ldb_bridge_mode_set_helper(struct drm_bridge *bridge,
+				const struct drm_display_mode *mode,
+				const struct drm_display_mode *adjusted_mode)
+{
+	struct ldb_channel *ldb_ch = bridge->driver_private;
+	struct ldb *ldb = ldb_ch->ldb;
+	bool is_split = ldb_channel_is_split_link(ldb_ch);
+
+	if (is_split)
+		ldb->ldb_ctrl |= LDB_SPLIT_MODE_EN;
+
+	switch (ldb_ch->out_bus_format) {
+	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
+		break;
+	case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
+		if (ldb_ch->chno == 0 || is_split)
+			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;
+		if (ldb_ch->chno == 1 || is_split)
+			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;
+		break;
+	case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
+		if (ldb_ch->chno == 0 || is_split)
+			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |
+					 LDB_BIT_MAP_CH0_JEIDA;
+		if (ldb_ch->chno == 1 || is_split)
+			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |
+					 LDB_BIT_MAP_CH1_JEIDA;
+		break;
+	}
+}
+
+void ldb_bridge_enable_helper(struct drm_bridge *bridge)
+{
+	struct ldb_channel *ldb_ch = bridge->driver_private;
+	struct ldb *ldb = ldb_ch->ldb;
+
+	/*
+	 * Platform specific bridge drivers should set ldb_ctrl properly
+	 * for the enablement, so just write the ctrl_reg here.
+	 */
+	regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
+}
+
+void ldb_bridge_disable_helper(struct drm_bridge *bridge)
+{
+	struct ldb_channel *ldb_ch = bridge->driver_private;
+	struct ldb *ldb = ldb_ch->ldb;
+	bool is_split = ldb_channel_is_split_link(ldb_ch);
+
+	if (ldb_ch->chno == 0 || is_split)
+		ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;
+	if (ldb_ch->chno == 1 || is_split)
+		ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK;
+
+	regmap_write(ldb->regmap, ldb->ctrl_reg, ldb->ldb_ctrl);
+}
+
+int ldb_bridge_attach_helper(struct drm_bridge *bridge,
+			     enum drm_bridge_attach_flags flags)
+{
+	struct ldb_channel *ldb_ch = bridge->driver_private;
+	struct ldb *ldb = ldb_ch->ldb;
+
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+		DRM_DEV_ERROR(ldb->dev,
+			      "do not support creating a drm_connector\n");
+		return -EINVAL;
+	}
+
+	if (!bridge->encoder) {
+		DRM_DEV_ERROR(ldb->dev, "missing encoder\n");
+		return -ENODEV;
+	}
+
+	return drm_bridge_attach(bridge->encoder,
+				ldb_ch->next_bridge, bridge,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+}
+
+int ldb_init_helper(struct ldb *ldb)
+{
+	struct device *dev = ldb->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *child;
+	int ret;
+	u32 i;
+
+	ldb->regmap = syscon_node_to_regmap(np->parent);
+	if (IS_ERR(ldb->regmap)) {
+		ret = PTR_ERR(ldb->regmap);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret);
+		return ret;
+	}
+
+	for_each_available_child_of_node(np, child) {
+		struct ldb_channel *ldb_ch;
+
+		ret = of_property_read_u32(child, "reg", &i);
+		if (ret || i > MAX_LDB_CHAN_NUM - 1) {
+			ret = -EINVAL;
+			DRM_DEV_ERROR(dev,
+				      "invalid channel node address: %u\n", i);
+			of_node_put(child);
+			return ret;
+		}
+
+		ldb_ch = ldb->channel[i];
+		ldb_ch->ldb = ldb;
+		ldb_ch->chno = i;
+		ldb_ch->is_available = true;
+		ldb_ch->np = child;
+
+		ldb->available_ch_cnt++;
+	}
+
+	return 0;
+}
+
+int ldb_find_next_bridge_helper(struct ldb *ldb)
+{
+	struct device *dev = ldb->dev;
+	struct ldb_channel *ldb_ch;
+	int ret, i;
+
+	for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+		ldb_ch = ldb->channel[i];
+
+		if (!ldb_ch->is_available)
+			continue;
+
+		ldb_ch->next_bridge = devm_drm_of_get_bridge(dev, ldb_ch->np,
+							     1, 0);
+		if (IS_ERR(ldb_ch->next_bridge)) {
+			ret = PTR_ERR(ldb_ch->next_bridge);
+			if (ret != -EPROBE_DEFER)
+				DRM_DEV_ERROR(dev,
+					      "failed to get next bridge: %d\n",
+					      ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+void ldb_add_bridge_helper(struct ldb *ldb,
+			   const struct drm_bridge_funcs *bridge_funcs)
+{
+	struct ldb_channel *ldb_ch;
+	int i;
+
+	for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+		ldb_ch = ldb->channel[i];
+
+		if (!ldb_ch->is_available)
+			continue;
+
+		ldb_ch->bridge.driver_private = ldb_ch;
+		ldb_ch->bridge.funcs = bridge_funcs;
+		ldb_ch->bridge.of_node = ldb_ch->np;
+
+		drm_bridge_add(&ldb_ch->bridge);
+	}
+}
+
+void ldb_remove_bridge_helper(struct ldb *ldb)
+{
+	struct ldb_channel *ldb_ch;
+	int i;
+
+	for (i = 0; i < MAX_LDB_CHAN_NUM; i++) {
+		ldb_ch = ldb->channel[i];
+
+		if (!ldb_ch->is_available)
+			continue;
+
+		drm_bridge_remove(&ldb_ch->bridge);
+	}
+}