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, 356 insertions, 0 deletions

diff --git a/drivers/net/usb/ax88172a.c b/drivers/net/usb/ax88172a.c
new file mode 100644
index 000000000..3777c7e2e
--- /dev/null
+++ b/drivers/net/usb/ax88172a.c
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ASIX AX88172A based USB 2.0 Ethernet Devices
+ * Copyright (C) 2012 OMICRON electronics GmbH
+ *
+ * Supports external PHYs via phylib. Based on the driver for the
+ * AX88772. Original copyrights follow:
+ *
+ * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
+ * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
+ * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
+ * Copyright (c) 2002-2003 TiVo Inc.
+ */
+
+#include "asix.h"
+#include <linux/phy.h>
+
+struct ax88172a_private {
+	struct mii_bus *mdio;
+	struct phy_device *phydev;
+	char phy_name[20];
+	u16 phy_addr;
+	u16 oldmode;
+	int use_embdphy;
+	struct asix_rx_fixup_info rx_fixup_info;
+};
+
+/* set MAC link settings according to information from phylib */
+static void ax88172a_adjust_link(struct net_device *netdev)
+{
+	struct phy_device *phydev = netdev->phydev;
+	struct usbnet *dev = netdev_priv(netdev);
+	struct ax88172a_private *priv = dev->driver_priv;
+	u16 mode = 0;
+
+	if (phydev->link) {
+		mode = AX88772_MEDIUM_DEFAULT;
+
+		if (phydev->duplex == DUPLEX_HALF)
+			mode &= ~AX_MEDIUM_FD;
+
+		if (phydev->speed != SPEED_100)
+			mode &= ~AX_MEDIUM_PS;
+	}
+
+	if (mode != priv->oldmode) {
+		asix_write_medium_mode(dev, mode, 0);
+		priv->oldmode = mode;
+		netdev_dbg(netdev, "speed %u duplex %d, setting mode to 0x%04x\n",
+			   phydev->speed, phydev->duplex, mode);
+		phy_print_status(phydev);
+	}
+}
+
+static void ax88172a_status(struct usbnet *dev, struct urb *urb)
+{
+	/* link changes are detected by polling the phy */
+}
+
+/* use phylib infrastructure */
+static int ax88172a_init_mdio(struct usbnet *dev)
+{
+	struct ax88172a_private *priv = dev->driver_priv;
+	int ret;
+
+	priv->mdio = mdiobus_alloc();
+	if (!priv->mdio) {
+		netdev_err(dev->net, "Could not allocate MDIO bus\n");
+		return -ENOMEM;
+	}
+
+	priv->mdio->priv = (void *)dev;
+	priv->mdio->read = &asix_mdio_bus_read;
+	priv->mdio->write = &asix_mdio_bus_write;
+	priv->mdio->name = "Asix MDIO Bus";
+	/* mii bus name is usb-<usb bus number>-<usb device number> */
+	snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
+		 dev->udev->bus->busnum, dev->udev->devnum);
+
+	ret = mdiobus_register(priv->mdio);
+	if (ret) {
+		netdev_err(dev->net, "Could not register MDIO bus\n");
+		goto mfree;
+	}
+
+	netdev_info(dev->net, "registered mdio bus %s\n", priv->mdio->id);
+	return 0;
+
+mfree:
+	mdiobus_free(priv->mdio);
+	return ret;
+}
+
+static void ax88172a_remove_mdio(struct usbnet *dev)
+{
+	struct ax88172a_private *priv = dev->driver_priv;
+
+	netdev_info(dev->net, "deregistering mdio bus %s\n", priv->mdio->id);
+	mdiobus_unregister(priv->mdio);
+	mdiobus_free(priv->mdio);
+}
+
+static const struct net_device_ops ax88172a_netdev_ops = {
+	.ndo_open		= usbnet_open,
+	.ndo_stop		= usbnet_stop,
+	.ndo_start_xmit		= usbnet_start_xmit,
+	.ndo_tx_timeout		= usbnet_tx_timeout,
+	.ndo_change_mtu		= usbnet_change_mtu,
+	.ndo_get_stats64	= dev_get_tstats64,
+	.ndo_set_mac_address	= asix_set_mac_address,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_eth_ioctl		= phy_do_ioctl_running,
+	.ndo_set_rx_mode        = asix_set_multicast,
+};
+
+static const struct ethtool_ops ax88172a_ethtool_ops = {
+	.get_drvinfo		= asix_get_drvinfo,
+	.get_link		= usbnet_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= asix_get_wol,
+	.set_wol		= asix_set_wol,
+	.get_eeprom_len		= asix_get_eeprom_len,
+	.get_eeprom		= asix_get_eeprom,
+	.set_eeprom		= asix_set_eeprom,
+	.nway_reset		= phy_ethtool_nway_reset,
+	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
+	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+};
+
+static int ax88172a_reset_phy(struct usbnet *dev, int embd_phy)
+{
+	int ret;
+
+	ret = asix_sw_reset(dev, AX_SWRESET_IPPD, 0);
+	if (ret < 0)
+		goto err;
+
+	msleep(150);
+	ret = asix_sw_reset(dev, AX_SWRESET_CLEAR, 0);
+	if (ret < 0)
+		goto err;
+
+	msleep(150);
+
+	ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_IPPD,
+			    0);
+	if (ret < 0)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+
+static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret;
+	u8 buf[ETH_ALEN];
+	struct ax88172a_private *priv;
+
+	usbnet_get_endpoints(dev, intf);
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev->driver_priv = priv;
+
+	/* Get the MAC address */
+	ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf, 0);
+	if (ret < ETH_ALEN) {
+		netdev_err(dev->net, "Failed to read MAC address: %d\n", ret);
+		ret = -EIO;
+		goto free;
+	}
+	eth_hw_addr_set(dev->net, buf);
+
+	dev->net->netdev_ops = &ax88172a_netdev_ops;
+	dev->net->ethtool_ops = &ax88172a_ethtool_ops;
+
+	/* are we using the internal or the external phy? */
+	ret = asix_read_cmd(dev, AX_CMD_SW_PHY_STATUS, 0, 0, 1, buf, 0);
+	if (ret < 0) {
+		netdev_err(dev->net, "Failed to read software interface selection register: %d\n",
+			   ret);
+		goto free;
+	}
+
+	netdev_dbg(dev->net, "AX_CMD_SW_PHY_STATUS = 0x%02x\n", buf[0]);
+	switch (buf[0] & AX_PHY_SELECT_MASK) {
+	case AX_PHY_SELECT_INTERNAL:
+		netdev_dbg(dev->net, "use internal phy\n");
+		priv->use_embdphy = 1;
+		break;
+	case AX_PHY_SELECT_EXTERNAL:
+		netdev_dbg(dev->net, "use external phy\n");
+		priv->use_embdphy = 0;
+		break;
+	default:
+		netdev_err(dev->net, "Interface mode not supported by driver\n");
+		ret = -ENOTSUPP;
+		goto free;
+	}
+
+	ret = asix_read_phy_addr(dev, priv->use_embdphy);
+	if (ret < 0)
+		goto free;
+
+	priv->phy_addr = ret;
+
+	ax88172a_reset_phy(dev, priv->use_embdphy);
+
+	/* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
+	if (dev->driver_info->flags & FLAG_FRAMING_AX) {
+		/* hard_mtu  is still the default - the device does not support
+		   jumbo eth frames */
+		dev->rx_urb_size = 2048;
+	}
+
+	/* init MDIO bus */
+	ret = ax88172a_init_mdio(dev);
+	if (ret)
+		goto free;
+
+	return 0;
+
+free:
+	kfree(priv);
+	return ret;
+}
+
+static int ax88172a_stop(struct usbnet *dev)
+{
+	struct ax88172a_private *priv = dev->driver_priv;
+
+	netdev_dbg(dev->net, "Stopping interface\n");
+
+	if (priv->phydev) {
+		netdev_info(dev->net, "Disconnecting from phy %s\n",
+			    priv->phy_name);
+		phy_stop(priv->phydev);
+		phy_disconnect(priv->phydev);
+	}
+
+	return 0;
+}
+
+static void ax88172a_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct ax88172a_private *priv = dev->driver_priv;
+
+	ax88172a_remove_mdio(dev);
+	kfree(priv);
+}
+
+static int ax88172a_reset(struct usbnet *dev)
+{
+	struct asix_data *data = (struct asix_data *)&dev->data;
+	struct ax88172a_private *priv = dev->driver_priv;
+	int ret;
+	u16 rx_ctl;
+
+	ax88172a_reset_phy(dev, priv->use_embdphy);
+
+	msleep(150);
+	rx_ctl = asix_read_rx_ctl(dev, 0);
+	netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
+	ret = asix_write_rx_ctl(dev, 0x0000, 0);
+	if (ret < 0)
+		goto out;
+
+	rx_ctl = asix_read_rx_ctl(dev, 0);
+	netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
+
+	msleep(150);
+
+	ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
+			     AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
+			     AX88772_IPG2_DEFAULT, 0, NULL, 0);
+	if (ret < 0) {
+		netdev_err(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
+		goto out;
+	}
+
+	/* Rewrite MAC address */
+	memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
+	ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
+			     data->mac_addr, 0);
+	if (ret < 0)
+		goto out;
+
+	/* Set RX_CTL to default values with 2k buffer, and enable cactus */
+	ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, 0);
+	if (ret < 0)
+		goto out;
+
+	rx_ctl = asix_read_rx_ctl(dev, 0);
+	netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
+		   rx_ctl);
+
+	rx_ctl = asix_read_medium_status(dev, 0);
+	netdev_dbg(dev->net, "Medium Status is 0x%04x after all initializations\n",
+		   rx_ctl);
+
+	/* Connect to PHY */
+	snprintf(priv->phy_name, 20, PHY_ID_FMT,
+		 priv->mdio->id, priv->phy_addr);
+
+	priv->phydev = phy_connect(dev->net, priv->phy_name,
+				   &ax88172a_adjust_link,
+				   PHY_INTERFACE_MODE_MII);
+	if (IS_ERR(priv->phydev)) {
+		netdev_err(dev->net, "Could not connect to PHY device %s\n",
+			   priv->phy_name);
+		ret = PTR_ERR(priv->phydev);
+		goto out;
+	}
+
+	netdev_info(dev->net, "Connected to phy %s\n", priv->phy_name);
+
+	/* During power-up, the AX88172A set the power down (BMCR_PDOWN)
+	 * bit of the PHY. Bring the PHY up again.
+	 */
+	genphy_resume(priv->phydev);
+	phy_start(priv->phydev);
+
+	return 0;
+
+out:
+	return ret;
+
+}
+
+static int ax88172a_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	struct ax88172a_private *dp = dev->driver_priv;
+	struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
+
+	return asix_rx_fixup_internal(dev, skb, rx);
+}
+
+const struct driver_info ax88172a_info = {
+	.description = "ASIX AX88172A USB 2.0 Ethernet",
+	.bind = ax88172a_bind,
+	.reset = ax88172a_reset,
+	.stop = ax88172a_stop,
+	.unbind = ax88172a_unbind,
+	.status = ax88172a_status,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
+		 FLAG_MULTI_PACKET,
+	.rx_fixup = ax88172a_rx_fixup,
+	.tx_fixup = asix_tx_fixup,
+};