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, 336 insertions, 0 deletions

diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
new file mode 100644
index 000000000..fdda62d6e
--- /dev/null
+++ b/drivers/net/dsa/mv88e6060.c
@@ -0,0 +1,336 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * net/dsa/mv88e6060.c - Driver for Marvell 88e6060 switch chips
+ * Copyright (c) 2008-2009 Marvell Semiconductor
+ */
+
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/jiffies.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <net/dsa.h>
+#include "mv88e6060.h"
+
+static int reg_read(struct mv88e6060_priv *priv, int addr, int reg)
+{
+	return mdiobus_read_nested(priv->bus, priv->sw_addr + addr, reg);
+}
+
+static int reg_write(struct mv88e6060_priv *priv, int addr, int reg, u16 val)
+{
+	return mdiobus_write_nested(priv->bus, priv->sw_addr + addr, reg, val);
+}
+
+static const char *mv88e6060_get_name(struct mii_bus *bus, int sw_addr)
+{
+	int ret;
+
+	ret = mdiobus_read(bus, sw_addr + REG_PORT(0), PORT_SWITCH_ID);
+	if (ret >= 0) {
+		if (ret == PORT_SWITCH_ID_6060)
+			return "Marvell 88E6060 (A0)";
+		if (ret == PORT_SWITCH_ID_6060_R1 ||
+		    ret == PORT_SWITCH_ID_6060_R2)
+			return "Marvell 88E6060 (B0)";
+		if ((ret & PORT_SWITCH_ID_6060_MASK) == PORT_SWITCH_ID_6060)
+			return "Marvell 88E6060";
+	}
+
+	return NULL;
+}
+
+static enum dsa_tag_protocol mv88e6060_get_tag_protocol(struct dsa_switch *ds,
+							int port,
+							enum dsa_tag_protocol m)
+{
+	return DSA_TAG_PROTO_TRAILER;
+}
+
+static int mv88e6060_switch_reset(struct mv88e6060_priv *priv)
+{
+	int i;
+	int ret;
+	unsigned long timeout;
+
+	/* Set all ports to the disabled state. */
+	for (i = 0; i < MV88E6060_PORTS; i++) {
+		ret = reg_read(priv, REG_PORT(i), PORT_CONTROL);
+		if (ret < 0)
+			return ret;
+		ret = reg_write(priv, REG_PORT(i), PORT_CONTROL,
+				ret & ~PORT_CONTROL_STATE_MASK);
+		if (ret)
+			return ret;
+	}
+
+	/* Wait for transmit queues to drain. */
+	usleep_range(2000, 4000);
+
+	/* Reset the switch. */
+	ret = reg_write(priv, REG_GLOBAL, GLOBAL_ATU_CONTROL,
+			GLOBAL_ATU_CONTROL_SWRESET |
+			GLOBAL_ATU_CONTROL_LEARNDIS);
+	if (ret)
+		return ret;
+
+	/* Wait up to one second for reset to complete. */
+	timeout = jiffies + 1 * HZ;
+	while (time_before(jiffies, timeout)) {
+		ret = reg_read(priv, REG_GLOBAL, GLOBAL_STATUS);
+		if (ret < 0)
+			return ret;
+
+		if (ret & GLOBAL_STATUS_INIT_READY)
+			break;
+
+		usleep_range(1000, 2000);
+	}
+	if (time_after(jiffies, timeout))
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static int mv88e6060_setup_global(struct mv88e6060_priv *priv)
+{
+	int ret;
+
+	/* Disable discarding of frames with excessive collisions,
+	 * set the maximum frame size to 1536 bytes, and mask all
+	 * interrupt sources.
+	 */
+	ret = reg_write(priv, REG_GLOBAL, GLOBAL_CONTROL,
+			GLOBAL_CONTROL_MAX_FRAME_1536);
+	if (ret)
+		return ret;
+
+	/* Disable automatic address learning.
+	 */
+	return reg_write(priv, REG_GLOBAL, GLOBAL_ATU_CONTROL,
+			 GLOBAL_ATU_CONTROL_LEARNDIS);
+}
+
+static int mv88e6060_setup_port(struct mv88e6060_priv *priv, int p)
+{
+	int addr = REG_PORT(p);
+	int ret;
+
+	if (dsa_is_unused_port(priv->ds, p))
+		return 0;
+
+	/* Do not force flow control, disable Ingress and Egress
+	 * Header tagging, disable VLAN tunneling, and set the port
+	 * state to Forwarding.  Additionally, if this is the CPU
+	 * port, enable Ingress and Egress Trailer tagging mode.
+	 */
+	ret = reg_write(priv, addr, PORT_CONTROL,
+			dsa_is_cpu_port(priv->ds, p) ?
+			PORT_CONTROL_TRAILER |
+			PORT_CONTROL_INGRESS_MODE |
+			PORT_CONTROL_STATE_FORWARDING :
+			PORT_CONTROL_STATE_FORWARDING);
+	if (ret)
+		return ret;
+
+	/* Port based VLAN map: give each port its own address
+	 * database, allow the CPU port to talk to each of the 'real'
+	 * ports, and allow each of the 'real' ports to only talk to
+	 * the CPU port.
+	 */
+	ret = reg_write(priv, addr, PORT_VLAN_MAP,
+			((p & 0xf) << PORT_VLAN_MAP_DBNUM_SHIFT) |
+			(dsa_is_cpu_port(priv->ds, p) ?
+			 dsa_user_ports(priv->ds) :
+			 BIT(dsa_to_port(priv->ds, p)->cpu_dp->index)));
+	if (ret)
+		return ret;
+
+	/* Port Association Vector: when learning source addresses
+	 * of packets, add the address to the address database using
+	 * a port bitmap that has only the bit for this port set and
+	 * the other bits clear.
+	 */
+	return reg_write(priv, addr, PORT_ASSOC_VECTOR, BIT(p));
+}
+
+static int mv88e6060_setup_addr(struct mv88e6060_priv *priv)
+{
+	u8 addr[ETH_ALEN];
+	int ret;
+	u16 val;
+
+	eth_random_addr(addr);
+
+	val = addr[0] << 8 | addr[1];
+
+	/* The multicast bit is always transmitted as a zero, so the switch uses
+	 * bit 8 for "DiffAddr", where 0 means all ports transmit the same SA.
+	 */
+	val &= 0xfeff;
+
+	ret = reg_write(priv, REG_GLOBAL, GLOBAL_MAC_01, val);
+	if (ret)
+		return ret;
+
+	ret = reg_write(priv, REG_GLOBAL, GLOBAL_MAC_23,
+			(addr[2] << 8) | addr[3]);
+	if (ret)
+		return ret;
+
+	return reg_write(priv, REG_GLOBAL, GLOBAL_MAC_45,
+			 (addr[4] << 8) | addr[5]);
+}
+
+static int mv88e6060_setup(struct dsa_switch *ds)
+{
+	struct mv88e6060_priv *priv = ds->priv;
+	int ret;
+	int i;
+
+	priv->ds = ds;
+
+	ret = mv88e6060_switch_reset(priv);
+	if (ret < 0)
+		return ret;
+
+	/* @@@ initialise atu */
+
+	ret = mv88e6060_setup_global(priv);
+	if (ret < 0)
+		return ret;
+
+	ret = mv88e6060_setup_addr(priv);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < MV88E6060_PORTS; i++) {
+		ret = mv88e6060_setup_port(priv, i);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int mv88e6060_port_to_phy_addr(int port)
+{
+	if (port >= 0 && port < MV88E6060_PORTS)
+		return port;
+	return -1;
+}
+
+static int mv88e6060_phy_read(struct dsa_switch *ds, int port, int regnum)
+{
+	struct mv88e6060_priv *priv = ds->priv;
+	int addr;
+
+	addr = mv88e6060_port_to_phy_addr(port);
+	if (addr == -1)
+		return 0xffff;
+
+	return reg_read(priv, addr, regnum);
+}
+
+static int
+mv88e6060_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
+{
+	struct mv88e6060_priv *priv = ds->priv;
+	int addr;
+
+	addr = mv88e6060_port_to_phy_addr(port);
+	if (addr == -1)
+		return 0xffff;
+
+	return reg_write(priv, addr, regnum, val);
+}
+
+static const struct dsa_switch_ops mv88e6060_switch_ops = {
+	.get_tag_protocol = mv88e6060_get_tag_protocol,
+	.setup		= mv88e6060_setup,
+	.phy_read	= mv88e6060_phy_read,
+	.phy_write	= mv88e6060_phy_write,
+};
+
+static int mv88e6060_probe(struct mdio_device *mdiodev)
+{
+	struct device *dev = &mdiodev->dev;
+	struct mv88e6060_priv *priv;
+	struct dsa_switch *ds;
+	const char *name;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->bus = mdiodev->bus;
+	priv->sw_addr = mdiodev->addr;
+
+	name = mv88e6060_get_name(priv->bus, priv->sw_addr);
+	if (!name)
+		return -ENODEV;
+
+	dev_info(dev, "switch %s detected\n", name);
+
+	ds = devm_kzalloc(dev, sizeof(*ds), GFP_KERNEL);
+	if (!ds)
+		return -ENOMEM;
+
+	ds->dev = dev;
+	ds->num_ports = MV88E6060_PORTS;
+	ds->priv = priv;
+	ds->dev = dev;
+	ds->ops = &mv88e6060_switch_ops;
+
+	dev_set_drvdata(dev, ds);
+
+	return dsa_register_switch(ds);
+}
+
+static void mv88e6060_remove(struct mdio_device *mdiodev)
+{
+	struct dsa_switch *ds = dev_get_drvdata(&mdiodev->dev);
+
+	if (!ds)
+		return;
+
+	dsa_unregister_switch(ds);
+}
+
+static void mv88e6060_shutdown(struct mdio_device *mdiodev)
+{
+	struct dsa_switch *ds = dev_get_drvdata(&mdiodev->dev);
+
+	if (!ds)
+		return;
+
+	dsa_switch_shutdown(ds);
+
+	dev_set_drvdata(&mdiodev->dev, NULL);
+}
+
+static const struct of_device_id mv88e6060_of_match[] = {
+	{
+		.compatible = "marvell,mv88e6060",
+	},
+	{ /* sentinel */ },
+};
+
+static struct mdio_driver mv88e6060_driver = {
+	.probe	= mv88e6060_probe,
+	.remove = mv88e6060_remove,
+	.shutdown = mv88e6060_shutdown,
+	.mdiodrv.driver = {
+		.name = "mv88e6060",
+		.of_match_table = mv88e6060_of_match,
+	},
+};
+
+mdio_module_driver(mv88e6060_driver);
+
+MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
+MODULE_DESCRIPTION("Driver for Marvell 88E6060 ethernet switch chip");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mv88e6060");