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, 297 insertions, 0 deletions

diff --git a/drivers/mailbox/hi3660-mailbox.c b/drivers/mailbox/hi3660-mailbox.c
new file mode 100644
index 000000000..ab24e731a
--- /dev/null
+++ b/drivers/mailbox/hi3660-mailbox.c
@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2017-2018 HiSilicon Limited.
+// Copyright (c) 2017-2018 Linaro Limited.
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/mailbox_controller.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "mailbox.h"
+
+#define MBOX_CHAN_MAX			32
+
+#define MBOX_RX				0x0
+#define MBOX_TX				0x1
+
+#define MBOX_BASE(mbox, ch)		((mbox)->base + ((ch) * 0x40))
+#define MBOX_SRC_REG			0x00
+#define MBOX_DST_REG			0x04
+#define MBOX_DCLR_REG			0x08
+#define MBOX_DSTAT_REG			0x0c
+#define MBOX_MODE_REG			0x10
+#define MBOX_IMASK_REG			0x14
+#define MBOX_ICLR_REG			0x18
+#define MBOX_SEND_REG			0x1c
+#define MBOX_DATA_REG			0x20
+
+#define MBOX_IPC_LOCK_REG		0xa00
+#define MBOX_IPC_UNLOCK			0x1acce551
+
+#define MBOX_AUTOMATIC_ACK		1
+
+#define MBOX_STATE_IDLE			BIT(4)
+#define MBOX_STATE_READY		BIT(5)
+#define MBOX_STATE_ACK			BIT(7)
+
+#define MBOX_MSG_LEN			8
+
+/**
+ * struct hi3660_chan_info - Hi3660 mailbox channel information
+ * @dst_irq:	Interrupt vector for remote processor
+ * @ack_irq:	Interrupt vector for local processor
+ *
+ * A channel can be used for TX or RX, it can trigger remote
+ * processor interrupt to notify remote processor and can receive
+ * interrupt if it has an incoming message.
+ */
+struct hi3660_chan_info {
+	unsigned int dst_irq;
+	unsigned int ack_irq;
+};
+
+/**
+ * struct hi3660_mbox - Hi3660 mailbox controller data
+ * @dev:	Device to which it is attached
+ * @base:	Base address of the register mapping region
+ * @chan:	Representation of channels in mailbox controller
+ * @mchan:	Representation of channel info
+ * @controller:	Representation of a communication channel controller
+ *
+ * Mailbox controller includes 32 channels and can allocate
+ * channel for message transferring.
+ */
+struct hi3660_mbox {
+	struct device *dev;
+	void __iomem *base;
+	struct mbox_chan chan[MBOX_CHAN_MAX];
+	struct hi3660_chan_info mchan[MBOX_CHAN_MAX];
+	struct mbox_controller controller;
+};
+
+static struct hi3660_mbox *to_hi3660_mbox(struct mbox_controller *mbox)
+{
+	return container_of(mbox, struct hi3660_mbox, controller);
+}
+
+static int hi3660_mbox_check_state(struct mbox_chan *chan)
+{
+	unsigned long ch = (unsigned long)chan->con_priv;
+	struct hi3660_mbox *mbox = to_hi3660_mbox(chan->mbox);
+	struct hi3660_chan_info *mchan = &mbox->mchan[ch];
+	void __iomem *base = MBOX_BASE(mbox, ch);
+	unsigned long val;
+	unsigned int ret;
+
+	/* Mailbox is ready to use */
+	if (readl(base + MBOX_MODE_REG) & MBOX_STATE_READY)
+		return 0;
+
+	/* Wait for acknowledge from remote */
+	ret = readx_poll_timeout_atomic(readl, base + MBOX_MODE_REG,
+			val, (val & MBOX_STATE_ACK), 1000, 300000);
+	if (ret) {
+		dev_err(mbox->dev, "%s: timeout for receiving ack\n", __func__);
+		return ret;
+	}
+
+	/* clear ack state, mailbox will get back to ready state */
+	writel(BIT(mchan->ack_irq), base + MBOX_ICLR_REG);
+
+	return 0;
+}
+
+static int hi3660_mbox_unlock(struct mbox_chan *chan)
+{
+	struct hi3660_mbox *mbox = to_hi3660_mbox(chan->mbox);
+	unsigned int val, retry = 3;
+
+	do {
+		writel(MBOX_IPC_UNLOCK, mbox->base + MBOX_IPC_LOCK_REG);
+
+		val = readl(mbox->base + MBOX_IPC_LOCK_REG);
+		if (!val)
+			break;
+
+		udelay(10);
+	} while (retry--);
+
+	if (val)
+		dev_err(mbox->dev, "%s: failed to unlock mailbox\n", __func__);
+
+	return (!val) ? 0 : -ETIMEDOUT;
+}
+
+static int hi3660_mbox_acquire_channel(struct mbox_chan *chan)
+{
+	unsigned long ch = (unsigned long)chan->con_priv;
+	struct hi3660_mbox *mbox = to_hi3660_mbox(chan->mbox);
+	struct hi3660_chan_info *mchan = &mbox->mchan[ch];
+	void __iomem *base = MBOX_BASE(mbox, ch);
+	unsigned int val, retry;
+
+	for (retry = 10; retry; retry--) {
+		/* Check if channel is in idle state */
+		if (readl(base + MBOX_MODE_REG) & MBOX_STATE_IDLE) {
+			writel(BIT(mchan->ack_irq), base + MBOX_SRC_REG);
+
+			/* Check ack bit has been set successfully */
+			val = readl(base + MBOX_SRC_REG);
+			if (val & BIT(mchan->ack_irq))
+				break;
+		}
+	}
+
+	if (!retry)
+		dev_err(mbox->dev, "%s: failed to acquire channel\n", __func__);
+
+	return retry ? 0 : -ETIMEDOUT;
+}
+
+static int hi3660_mbox_startup(struct mbox_chan *chan)
+{
+	int ret;
+
+	ret = hi3660_mbox_unlock(chan);
+	if (ret)
+		return ret;
+
+	ret = hi3660_mbox_acquire_channel(chan);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int hi3660_mbox_send_data(struct mbox_chan *chan, void *msg)
+{
+	unsigned long ch = (unsigned long)chan->con_priv;
+	struct hi3660_mbox *mbox = to_hi3660_mbox(chan->mbox);
+	struct hi3660_chan_info *mchan = &mbox->mchan[ch];
+	void __iomem *base = MBOX_BASE(mbox, ch);
+	u32 *buf = msg;
+	unsigned int i;
+	int ret;
+
+	ret = hi3660_mbox_check_state(chan);
+	if (ret)
+		return ret;
+
+	/* Clear mask for destination interrupt */
+	writel_relaxed(~BIT(mchan->dst_irq), base + MBOX_IMASK_REG);
+
+	/* Config destination for interrupt vector */
+	writel_relaxed(BIT(mchan->dst_irq), base + MBOX_DST_REG);
+
+	/* Automatic acknowledge mode */
+	writel_relaxed(MBOX_AUTOMATIC_ACK, base + MBOX_MODE_REG);
+
+	/* Fill message data */
+	for (i = 0; i < MBOX_MSG_LEN; i++)
+		writel_relaxed(buf[i], base + MBOX_DATA_REG + i * 4);
+
+	/* Trigger data transferring */
+	writel(BIT(mchan->ack_irq), base + MBOX_SEND_REG);
+	return 0;
+}
+
+static const struct mbox_chan_ops hi3660_mbox_ops = {
+	.startup	= hi3660_mbox_startup,
+	.send_data	= hi3660_mbox_send_data,
+};
+
+static struct mbox_chan *hi3660_mbox_xlate(struct mbox_controller *controller,
+					   const struct of_phandle_args *spec)
+{
+	struct hi3660_mbox *mbox = to_hi3660_mbox(controller);
+	struct hi3660_chan_info *mchan;
+	unsigned int ch = spec->args[0];
+
+	if (ch >= MBOX_CHAN_MAX) {
+		dev_err(mbox->dev, "Invalid channel idx %d\n", ch);
+		return ERR_PTR(-EINVAL);
+	}
+
+	mchan = &mbox->mchan[ch];
+	mchan->dst_irq = spec->args[1];
+	mchan->ack_irq = spec->args[2];
+
+	return &mbox->chan[ch];
+}
+
+static const struct of_device_id hi3660_mbox_of_match[] = {
+	{ .compatible = "hisilicon,hi3660-mbox", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, hi3660_mbox_of_match);
+
+static int hi3660_mbox_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct hi3660_mbox *mbox;
+	struct mbox_chan *chan;
+	unsigned long ch;
+	int err;
+
+	mbox = devm_kzalloc(dev, sizeof(*mbox), GFP_KERNEL);
+	if (!mbox)
+		return -ENOMEM;
+
+	mbox->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(mbox->base))
+		return PTR_ERR(mbox->base);
+
+	mbox->dev = dev;
+	mbox->controller.dev = dev;
+	mbox->controller.chans = mbox->chan;
+	mbox->controller.num_chans = MBOX_CHAN_MAX;
+	mbox->controller.ops = &hi3660_mbox_ops;
+	mbox->controller.of_xlate = hi3660_mbox_xlate;
+
+	/* Initialize mailbox channel data */
+	chan = mbox->chan;
+	for (ch = 0; ch < MBOX_CHAN_MAX; ch++)
+		chan[ch].con_priv = (void *)ch;
+
+	err = devm_mbox_controller_register(dev, &mbox->controller);
+	if (err) {
+		dev_err(dev, "Failed to register mailbox %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, mbox);
+	dev_info(dev, "Mailbox enabled\n");
+	return 0;
+}
+
+static struct platform_driver hi3660_mbox_driver = {
+	.probe  = hi3660_mbox_probe,
+	.driver = {
+		.name = "hi3660-mbox",
+		.of_match_table = hi3660_mbox_of_match,
+	},
+};
+
+static int __init hi3660_mbox_init(void)
+{
+	return platform_driver_register(&hi3660_mbox_driver);
+}
+core_initcall(hi3660_mbox_init);
+
+static void __exit hi3660_mbox_exit(void)
+{
+	platform_driver_unregister(&hi3660_mbox_driver);
+}
+module_exit(hi3660_mbox_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Hisilicon Hi3660 Mailbox Controller");
+MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");