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, 981 insertions, 0 deletions

diff --git a/drivers/net/usb/catc.c b/drivers/net/usb/catc.c
new file mode 100644
index 000000000..ff439ef53
--- /dev/null
+++ b/drivers/net/usb/catc.c
@@ -0,0 +1,981 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) 2001 Vojtech Pavlik
+ *
+ *  CATC EL1210A NetMate USB Ethernet driver
+ *
+ *  Sponsored by SuSE
+ *
+ *  Based on the work of
+ *		Donald Becker
+ *
+ *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
+ *    - adds support for Belkin F5U011
+ */
+
+/*
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/crc32.h>
+#include <linux/bitops.h>
+#include <linux/gfp.h>
+#include <linux/uaccess.h>
+
+#undef DEBUG
+
+#include <linux/usb.h>
+
+/*
+ * Version information.
+ */
+
+#define DRIVER_VERSION "v2.8"
+#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
+#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
+#define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+static const char driver_name[] = "catc";
+
+/*
+ * Some defines.
+ */
+
+#define STATS_UPDATE		(HZ)	/* Time between stats updates */
+#define TX_TIMEOUT		(5*HZ)	/* Max time the queue can be stopped */
+#define PKT_SZ			1536	/* Max Ethernet packet size */
+#define RX_MAX_BURST		15	/* Max packets per rx buffer (> 0, < 16) */
+#define TX_MAX_BURST		15	/* Max full sized packets per tx buffer (> 0) */
+#define CTRL_QUEUE		16	/* Max control requests in flight (power of two) */
+#define RX_PKT_SZ		1600	/* Max size of receive packet for F5U011 */
+
+/*
+ * Control requests.
+ */
+
+enum control_requests {
+	ReadMem =	0xf1,
+	GetMac =	0xf2,
+	Reset =		0xf4,
+	SetMac =	0xf5,
+	SetRxMode =     0xf5,  /* F5U011 only */
+	WriteROM =	0xf8,
+	SetReg =	0xfa,
+	GetReg =	0xfb,
+	WriteMem =	0xfc,
+	ReadROM =	0xfd,
+};
+
+/*
+ * Registers.
+ */
+
+enum register_offsets {
+	TxBufCount =	0x20,
+	RxBufCount =	0x21,
+	OpModes =	0x22,
+	TxQed =		0x23,
+	RxQed =		0x24,
+	MaxBurst =	0x25,
+	RxUnit =	0x60,
+	EthStatus =	0x61,
+	StationAddr0 =	0x67,
+	EthStats =	0x69,
+	LEDCtrl =	0x81,
+};
+
+enum eth_stats {
+	TxSingleColl =	0x00,
+        TxMultiColl =	0x02,
+        TxExcessColl =	0x04,
+        RxFramErr =	0x06,
+};
+
+enum op_mode_bits {
+	Op3MemWaits =	0x03,
+	OpLenInclude =	0x08,
+	OpRxMerge =	0x10,
+	OpTxMerge =	0x20,
+	OpWin95bugfix =	0x40,
+	OpLoopback =	0x80,
+};
+
+enum rx_filter_bits {
+	RxEnable =	0x01,
+	RxPolarity =	0x02,
+	RxForceOK =	0x04,
+	RxMultiCast =	0x08,
+	RxPromisc =	0x10,
+	AltRxPromisc =  0x20, /* F5U011 uses different bit */
+};
+
+enum led_values {
+	LEDFast = 	0x01,
+	LEDSlow =	0x02,
+	LEDFlash =	0x03,
+	LEDPulse =	0x04,
+	LEDLink =	0x08,
+};
+
+enum link_status {
+	LinkNoChange = 0,
+	LinkGood     = 1,
+	LinkBad      = 2
+};
+
+/*
+ * The catc struct.
+ */
+
+#define CTRL_RUNNING	0
+#define RX_RUNNING	1
+#define TX_RUNNING	2
+
+struct catc {
+	struct net_device *netdev;
+	struct usb_device *usbdev;
+
+	unsigned long flags;
+
+	unsigned int tx_ptr, tx_idx;
+	unsigned int ctrl_head, ctrl_tail;
+	spinlock_t tx_lock, ctrl_lock;
+
+	u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
+	u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
+	u8 irq_buf[2];
+	u8 ctrl_buf[64];
+	struct usb_ctrlrequest ctrl_dr;
+
+	struct timer_list timer;
+	u8 stats_buf[8];
+	u16 stats_vals[4];
+	unsigned long last_stats;
+
+	u8 multicast[64];
+
+	struct ctrl_queue {
+		u8 dir;
+		u8 request;
+		u16 value;
+		u16 index;
+		void *buf;
+		int len;
+		void (*callback)(struct catc *catc, struct ctrl_queue *q);
+	} ctrl_queue[CTRL_QUEUE];
+
+	struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
+
+	u8 is_f5u011;	/* Set if device is an F5U011 */
+	u8 rxmode[2];	/* Used for F5U011 */
+	atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
+};
+
+/*
+ * Useful macros.
+ */
+
+#define catc_get_mac(catc, mac)				catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
+#define catc_reset(catc)				catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
+#define catc_set_reg(catc, reg, val)			catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
+#define catc_get_reg(catc, reg, buf)			catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
+#define catc_write_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
+#define catc_read_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
+
+#define f5u011_rxmode(catc, rxmode)			catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
+#define f5u011_rxmode_async(catc, rxmode)		catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
+#define f5u011_mchash_async(catc, hash)			catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
+
+#define catc_set_reg_async(catc, reg, val)		catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
+#define catc_get_reg_async(catc, reg, cb)		catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
+#define catc_write_mem_async(catc, addr, buf, size)	catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
+
+/*
+ * Receive routines.
+ */
+
+static void catc_rx_done(struct urb *urb)
+{
+	struct catc *catc = urb->context;
+	u8 *pkt_start = urb->transfer_buffer;
+	struct sk_buff *skb;
+	int pkt_len, pkt_offset = 0;
+	int status = urb->status;
+
+	if (!catc->is_f5u011) {
+		clear_bit(RX_RUNNING, &catc->flags);
+		pkt_offset = 2;
+	}
+
+	if (status) {
+		dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
+			status, urb->actual_length);
+		return;
+	}
+
+	do {
+		if(!catc->is_f5u011) {
+			pkt_len = le16_to_cpup((__le16*)pkt_start);
+			if (pkt_len > urb->actual_length) {
+				catc->netdev->stats.rx_length_errors++;
+				catc->netdev->stats.rx_errors++;
+				break;
+			}
+		} else {
+			pkt_len = urb->actual_length;
+		}
+
+		if (!(skb = dev_alloc_skb(pkt_len)))
+			return;
+
+		skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
+		skb_put(skb, pkt_len);
+
+		skb->protocol = eth_type_trans(skb, catc->netdev);
+		netif_rx(skb);
+
+		catc->netdev->stats.rx_packets++;
+		catc->netdev->stats.rx_bytes += pkt_len;
+
+		/* F5U011 only does one packet per RX */
+		if (catc->is_f5u011)
+			break;
+		pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
+
+	} while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
+
+	if (catc->is_f5u011) {
+		if (atomic_read(&catc->recq_sz)) {
+			int state;
+			atomic_dec(&catc->recq_sz);
+			netdev_dbg(catc->netdev, "getting extra packet\n");
+			urb->dev = catc->usbdev;
+			if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+				netdev_dbg(catc->netdev,
+					   "submit(rx_urb) status %d\n", state);
+			}
+		} else {
+			clear_bit(RX_RUNNING, &catc->flags);
+		}
+	}
+}
+
+static void catc_irq_done(struct urb *urb)
+{
+	struct catc *catc = urb->context;
+	u8 *data = urb->transfer_buffer;
+	int status = urb->status;
+	unsigned int hasdata, linksts = LinkNoChange;
+	int res;
+
+	if (!catc->is_f5u011) {
+		hasdata = data[1] & 0x80;
+		if (data[1] & 0x40)
+			linksts = LinkGood;
+		else if (data[1] & 0x20)
+			linksts = LinkBad;
+	} else {
+		hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
+		if (data[0] == 0x90)
+			linksts = LinkGood;
+		else if (data[0] == 0xA0)
+			linksts = LinkBad;
+	}
+
+	switch (status) {
+	case 0:			/* success */
+		break;
+	case -ECONNRESET:	/* unlink */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	/* -EPIPE:  should clear the halt */
+	default:		/* error */
+		dev_dbg(&urb->dev->dev,
+			"irq_done, status %d, data %02x %02x.\n",
+			status, data[0], data[1]);
+		goto resubmit;
+	}
+
+	if (linksts == LinkGood) {
+		netif_carrier_on(catc->netdev);
+		netdev_dbg(catc->netdev, "link ok\n");
+	}
+
+	if (linksts == LinkBad) {
+		netif_carrier_off(catc->netdev);
+		netdev_dbg(catc->netdev, "link bad\n");
+	}
+
+	if (hasdata) {
+		if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
+			if (catc->is_f5u011)
+				atomic_inc(&catc->recq_sz);
+		} else {
+			catc->rx_urb->dev = catc->usbdev;
+			if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
+				dev_err(&catc->usbdev->dev,
+					"submit(rx_urb) status %d\n", res);
+			}
+		}
+	}
+resubmit:
+	res = usb_submit_urb (urb, GFP_ATOMIC);
+	if (res)
+		dev_err(&catc->usbdev->dev,
+			"can't resubmit intr, %s-%s, status %d\n",
+			catc->usbdev->bus->bus_name,
+			catc->usbdev->devpath, res);
+}
+
+/*
+ * Transmit routines.
+ */
+
+static int catc_tx_run(struct catc *catc)
+{
+	int status;
+
+	if (catc->is_f5u011)
+		catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
+
+	catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
+	catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
+	catc->tx_urb->dev = catc->usbdev;
+
+	if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
+		dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
+			status);
+
+	catc->tx_idx = !catc->tx_idx;
+	catc->tx_ptr = 0;
+
+	netif_trans_update(catc->netdev);
+	return status;
+}
+
+static void catc_tx_done(struct urb *urb)
+{
+	struct catc *catc = urb->context;
+	unsigned long flags;
+	int r, status = urb->status;
+
+	if (status == -ECONNRESET) {
+		dev_dbg(&urb->dev->dev, "Tx Reset.\n");
+		urb->status = 0;
+		netif_trans_update(catc->netdev);
+		catc->netdev->stats.tx_errors++;
+		clear_bit(TX_RUNNING, &catc->flags);
+		netif_wake_queue(catc->netdev);
+		return;
+	}
+
+	if (status) {
+		dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
+			status, urb->actual_length);
+		return;
+	}
+
+	spin_lock_irqsave(&catc->tx_lock, flags);
+
+	if (catc->tx_ptr) {
+		r = catc_tx_run(catc);
+		if (unlikely(r < 0))
+			clear_bit(TX_RUNNING, &catc->flags);
+	} else {
+		clear_bit(TX_RUNNING, &catc->flags);
+	}
+
+	netif_wake_queue(catc->netdev);
+
+	spin_unlock_irqrestore(&catc->tx_lock, flags);
+}
+
+static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
+					 struct net_device *netdev)
+{
+	struct catc *catc = netdev_priv(netdev);
+	unsigned long flags;
+	int r = 0;
+	char *tx_buf;
+
+	spin_lock_irqsave(&catc->tx_lock, flags);
+
+	catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
+	tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
+	if (catc->is_f5u011)
+		*(__be16 *)tx_buf = cpu_to_be16(skb->len);
+	else
+		*(__le16 *)tx_buf = cpu_to_le16(skb->len);
+	skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
+	catc->tx_ptr += skb->len + 2;
+
+	if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
+		r = catc_tx_run(catc);
+		if (r < 0)
+			clear_bit(TX_RUNNING, &catc->flags);
+	}
+
+	if ((catc->is_f5u011 && catc->tx_ptr) ||
+	    (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
+		netif_stop_queue(netdev);
+
+	spin_unlock_irqrestore(&catc->tx_lock, flags);
+
+	if (r >= 0) {
+		catc->netdev->stats.tx_bytes += skb->len;
+		catc->netdev->stats.tx_packets++;
+	}
+
+	dev_kfree_skb(skb);
+
+	return NETDEV_TX_OK;
+}
+
+static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+	struct catc *catc = netdev_priv(netdev);
+
+	dev_warn(&netdev->dev, "Transmit timed out.\n");
+	usb_unlink_urb(catc->tx_urb);
+}
+
+/*
+ * Control messages.
+ */
+
+static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
+{
+        int retval = usb_control_msg(catc->usbdev,
+		dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
+		 request, 0x40 | dir, value, index, buf, len, 1000);
+        return retval < 0 ? retval : 0;
+}
+
+static void catc_ctrl_run(struct catc *catc)
+{
+	struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
+	struct usb_device *usbdev = catc->usbdev;
+	struct urb *urb = catc->ctrl_urb;
+	struct usb_ctrlrequest *dr = &catc->ctrl_dr;
+	int status;
+
+	dr->bRequest = q->request;
+	dr->bRequestType = 0x40 | q->dir;
+	dr->wValue = cpu_to_le16(q->value);
+	dr->wIndex = cpu_to_le16(q->index);
+	dr->wLength = cpu_to_le16(q->len);
+
+        urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
+	urb->transfer_buffer_length = q->len;
+	urb->transfer_buffer = catc->ctrl_buf;
+	urb->setup_packet = (void *) dr;
+	urb->dev = usbdev;
+
+	if (!q->dir && q->buf && q->len)
+		memcpy(catc->ctrl_buf, q->buf, q->len);
+
+	if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
+		dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
+			status);
+}
+
+static void catc_ctrl_done(struct urb *urb)
+{
+	struct catc *catc = urb->context;
+	struct ctrl_queue *q;
+	unsigned long flags;
+	int status = urb->status;
+
+	if (status)
+		dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
+			status, urb->actual_length);
+
+	spin_lock_irqsave(&catc->ctrl_lock, flags);
+
+	q = catc->ctrl_queue + catc->ctrl_tail;
+
+	if (q->dir) {
+		if (q->buf && q->len)
+			memcpy(q->buf, catc->ctrl_buf, q->len);
+		else
+			q->buf = catc->ctrl_buf;
+	}
+
+	if (q->callback)
+		q->callback(catc, q);
+
+	catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
+
+	if (catc->ctrl_head != catc->ctrl_tail)
+		catc_ctrl_run(catc);
+	else
+		clear_bit(CTRL_RUNNING, &catc->flags);
+
+	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
+}
+
+static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
+	u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
+{
+	struct ctrl_queue *q;
+	int retval = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&catc->ctrl_lock, flags);
+
+	q = catc->ctrl_queue + catc->ctrl_head;
+
+	q->dir = dir;
+	q->request = request;
+	q->value = value;
+	q->index = index;
+	q->buf = buf;
+	q->len = len;
+	q->callback = callback;
+
+	catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
+
+	if (catc->ctrl_head == catc->ctrl_tail) {
+		dev_err(&catc->usbdev->dev, "ctrl queue full\n");
+		catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
+		retval = -1;
+	}
+
+	if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
+		catc_ctrl_run(catc);
+
+	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
+
+	return retval;
+}
+
+/*
+ * Statistics.
+ */
+
+static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
+{
+	int index = q->index - EthStats;
+	u16 data, last;
+
+	catc->stats_buf[index] = *((char *)q->buf);
+
+	if (index & 1)
+		return;
+
+	data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
+	last = catc->stats_vals[index >> 1];
+
+	switch (index) {
+		case TxSingleColl:
+		case TxMultiColl:
+			catc->netdev->stats.collisions += data - last;
+			break;
+		case TxExcessColl:
+			catc->netdev->stats.tx_aborted_errors += data - last;
+			catc->netdev->stats.tx_errors += data - last;
+			break;
+		case RxFramErr:
+			catc->netdev->stats.rx_frame_errors += data - last;
+			catc->netdev->stats.rx_errors += data - last;
+			break;
+	}
+
+	catc->stats_vals[index >> 1] = data;
+}
+
+static void catc_stats_timer(struct timer_list *t)
+{
+	struct catc *catc = from_timer(catc, t, timer);
+	int i;
+
+	for (i = 0; i < 8; i++)
+		catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
+
+	mod_timer(&catc->timer, jiffies + STATS_UPDATE);
+}
+
+/*
+ * Receive modes. Broadcast, Multicast, Promisc.
+ */
+
+static void catc_multicast(const unsigned char *addr, u8 *multicast)
+{
+	u32 crc;
+
+	crc = ether_crc_le(6, addr);
+	multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
+}
+
+static void catc_set_multicast_list(struct net_device *netdev)
+{
+	struct catc *catc = netdev_priv(netdev);
+	struct netdev_hw_addr *ha;
+	u8 broadcast[ETH_ALEN];
+	u8 rx = RxEnable | RxPolarity | RxMultiCast;
+
+	eth_broadcast_addr(broadcast);
+	memset(catc->multicast, 0, 64);
+
+	catc_multicast(broadcast, catc->multicast);
+	catc_multicast(netdev->dev_addr, catc->multicast);
+
+	if (netdev->flags & IFF_PROMISC) {
+		memset(catc->multicast, 0xff, 64);
+		rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
+	}
+
+	if (netdev->flags & IFF_ALLMULTI) {
+		memset(catc->multicast, 0xff, 64);
+	} else {
+		netdev_for_each_mc_addr(ha, netdev) {
+			u32 crc = ether_crc_le(6, ha->addr);
+			if (!catc->is_f5u011) {
+				catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
+			} else {
+				catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
+			}
+		}
+	}
+	if (!catc->is_f5u011) {
+		catc_set_reg_async(catc, RxUnit, rx);
+		catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
+	} else {
+		f5u011_mchash_async(catc, catc->multicast);
+		if (catc->rxmode[0] != rx) {
+			catc->rxmode[0] = rx;
+			netdev_dbg(catc->netdev,
+				   "Setting RX mode to %2.2X %2.2X\n",
+				   catc->rxmode[0], catc->rxmode[1]);
+			f5u011_rxmode_async(catc, catc->rxmode);
+		}
+	}
+}
+
+static void catc_get_drvinfo(struct net_device *dev,
+			     struct ethtool_drvinfo *info)
+{
+	struct catc *catc = netdev_priv(dev);
+	strscpy(info->driver, driver_name, sizeof(info->driver));
+	strscpy(info->version, DRIVER_VERSION, sizeof(info->version));
+	usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
+}
+
+static int catc_get_link_ksettings(struct net_device *dev,
+				   struct ethtool_link_ksettings *cmd)
+{
+	struct catc *catc = netdev_priv(dev);
+	if (!catc->is_f5u011)
+		return -EOPNOTSUPP;
+
+	ethtool_link_ksettings_zero_link_mode(cmd, supported);
+	ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
+	ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
+
+	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
+	ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
+	ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
+
+	cmd->base.speed = SPEED_10;
+	cmd->base.duplex = DUPLEX_HALF;
+	cmd->base.port = PORT_TP;
+	cmd->base.phy_address = 0;
+	cmd->base.autoneg = AUTONEG_DISABLE;
+
+	return 0;
+}
+
+static const struct ethtool_ops ops = {
+	.get_drvinfo = catc_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_link_ksettings = catc_get_link_ksettings,
+};
+
+/*
+ * Open, close.
+ */
+
+static int catc_open(struct net_device *netdev)
+{
+	struct catc *catc = netdev_priv(netdev);
+	int status;
+
+	catc->irq_urb->dev = catc->usbdev;
+	if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
+		dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
+			status);
+		return -1;
+	}
+
+	netif_start_queue(netdev);
+
+	if (!catc->is_f5u011)
+		mod_timer(&catc->timer, jiffies + STATS_UPDATE);
+
+	return 0;
+}
+
+static int catc_stop(struct net_device *netdev)
+{
+	struct catc *catc = netdev_priv(netdev);
+
+	netif_stop_queue(netdev);
+
+	if (!catc->is_f5u011)
+		del_timer_sync(&catc->timer);
+
+	usb_kill_urb(catc->rx_urb);
+	usb_kill_urb(catc->tx_urb);
+	usb_kill_urb(catc->irq_urb);
+	usb_kill_urb(catc->ctrl_urb);
+
+	return 0;
+}
+
+static const struct net_device_ops catc_netdev_ops = {
+	.ndo_open		= catc_open,
+	.ndo_stop		= catc_stop,
+	.ndo_start_xmit		= catc_start_xmit,
+
+	.ndo_tx_timeout		= catc_tx_timeout,
+	.ndo_set_rx_mode	= catc_set_multicast_list,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+/*
+ * USB probe, disconnect.
+ */
+
+static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct device *dev = &intf->dev;
+	struct usb_device *usbdev = interface_to_usbdev(intf);
+	struct net_device *netdev;
+	struct catc *catc;
+	u8 broadcast[ETH_ALEN];
+	u8 *macbuf;
+	int pktsz, ret = -ENOMEM;
+
+	macbuf = kmalloc(ETH_ALEN, GFP_KERNEL);
+	if (!macbuf)
+		goto error;
+
+	if (usb_set_interface(usbdev,
+			intf->altsetting->desc.bInterfaceNumber, 1)) {
+		dev_err(dev, "Can't set altsetting 1.\n");
+		ret = -EIO;
+		goto fail_mem;
+	}
+
+	netdev = alloc_etherdev(sizeof(struct catc));
+	if (!netdev)
+		goto fail_mem;
+
+	catc = netdev_priv(netdev);
+
+	netdev->netdev_ops = &catc_netdev_ops;
+	netdev->watchdog_timeo = TX_TIMEOUT;
+	netdev->ethtool_ops = &ops;
+
+	catc->usbdev = usbdev;
+	catc->netdev = netdev;
+
+	spin_lock_init(&catc->tx_lock);
+	spin_lock_init(&catc->ctrl_lock);
+
+	timer_setup(&catc->timer, catc_stats_timer, 0);
+
+	catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
+	catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
+	    (!catc->rx_urb) || (!catc->irq_urb)) {
+		dev_err(&intf->dev, "No free urbs available.\n");
+		ret = -ENOMEM;
+		goto fail_free;
+	}
+
+	/* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
+	if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
+	    le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
+	    le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
+		dev_dbg(dev, "Testing for f5u011\n");
+		catc->is_f5u011 = 1;
+		atomic_set(&catc->recq_sz, 0);
+		pktsz = RX_PKT_SZ;
+	} else {
+		pktsz = RX_MAX_BURST * (PKT_SZ + 2);
+	}
+
+	usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
+		NULL, NULL, 0, catc_ctrl_done, catc);
+
+	usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
+		NULL, 0, catc_tx_done, catc);
+
+	usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
+		catc->rx_buf, pktsz, catc_rx_done, catc);
+
+	usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
+                catc->irq_buf, 2, catc_irq_done, catc, 1);
+
+	if (!catc->is_f5u011) {
+		u32 *buf;
+		int i;
+
+		dev_dbg(dev, "Checking memory size\n");
+
+		buf = kmalloc(4, GFP_KERNEL);
+		if (!buf) {
+			ret = -ENOMEM;
+			goto fail_free;
+		}
+
+		*buf = 0x12345678;
+		catc_write_mem(catc, 0x7a80, buf, 4);
+		*buf = 0x87654321;
+		catc_write_mem(catc, 0xfa80, buf, 4);
+		catc_read_mem(catc, 0x7a80, buf, 4);
+
+		switch (*buf) {
+		case 0x12345678:
+			catc_set_reg(catc, TxBufCount, 8);
+			catc_set_reg(catc, RxBufCount, 32);
+			dev_dbg(dev, "64k Memory\n");
+			break;
+		default:
+			dev_warn(&intf->dev,
+				 "Couldn't detect memory size, assuming 32k\n");
+			fallthrough;
+		case 0x87654321:
+			catc_set_reg(catc, TxBufCount, 4);
+			catc_set_reg(catc, RxBufCount, 16);
+			dev_dbg(dev, "32k Memory\n");
+			break;
+		}
+
+		kfree(buf);
+
+		dev_dbg(dev, "Getting MAC from SEEROM.\n");
+
+		catc_get_mac(catc, macbuf);
+		eth_hw_addr_set(netdev, macbuf);
+
+		dev_dbg(dev, "Setting MAC into registers.\n");
+
+		for (i = 0; i < 6; i++)
+			catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
+
+		dev_dbg(dev, "Filling the multicast list.\n");
+
+		eth_broadcast_addr(broadcast);
+		catc_multicast(broadcast, catc->multicast);
+		catc_multicast(netdev->dev_addr, catc->multicast);
+		catc_write_mem(catc, 0xfa80, catc->multicast, 64);
+
+		dev_dbg(dev, "Clearing error counters.\n");
+
+		for (i = 0; i < 8; i++)
+			catc_set_reg(catc, EthStats + i, 0);
+		catc->last_stats = jiffies;
+
+		dev_dbg(dev, "Enabling.\n");
+
+		catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
+		catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
+		catc_set_reg(catc, LEDCtrl, LEDLink);
+		catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
+	} else {
+		dev_dbg(dev, "Performing reset\n");
+		catc_reset(catc);
+		catc_get_mac(catc, macbuf);
+		eth_hw_addr_set(netdev, macbuf);
+
+		dev_dbg(dev, "Setting RX Mode\n");
+		catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
+		catc->rxmode[1] = 0;
+		f5u011_rxmode(catc, catc->rxmode);
+	}
+	dev_dbg(dev, "Init done.\n");
+	printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
+	       netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
+	       usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
+	usb_set_intfdata(intf, catc);
+
+	SET_NETDEV_DEV(netdev, &intf->dev);
+	ret = register_netdev(netdev);
+	if (ret)
+		goto fail_clear_intfdata;
+
+	kfree(macbuf);
+	return 0;
+
+fail_clear_intfdata:
+	usb_set_intfdata(intf, NULL);
+fail_free:
+	usb_free_urb(catc->ctrl_urb);
+	usb_free_urb(catc->tx_urb);
+	usb_free_urb(catc->rx_urb);
+	usb_free_urb(catc->irq_urb);
+	free_netdev(netdev);
+fail_mem:
+	kfree(macbuf);
+error:
+	return ret;
+}
+
+static void catc_disconnect(struct usb_interface *intf)
+{
+	struct catc *catc = usb_get_intfdata(intf);
+
+	usb_set_intfdata(intf, NULL);
+	if (catc) {
+		unregister_netdev(catc->netdev);
+		usb_free_urb(catc->ctrl_urb);
+		usb_free_urb(catc->tx_urb);
+		usb_free_urb(catc->rx_urb);
+		usb_free_urb(catc->irq_urb);
+		free_netdev(catc->netdev);
+	}
+}
+
+/*
+ * Module functions and tables.
+ */
+
+static const struct usb_device_id catc_id_table[] = {
+	{ USB_DEVICE(0x0423, 0xa) },	/* CATC Netmate, Belkin F5U011 */
+	{ USB_DEVICE(0x0423, 0xc) },	/* CATC Netmate II, Belkin F5U111 */
+	{ USB_DEVICE(0x08d1, 0x1) },	/* smartBridges smartNIC */
+	{ }
+};
+
+MODULE_DEVICE_TABLE(usb, catc_id_table);
+
+static struct usb_driver catc_driver = {
+	.name =		driver_name,
+	.probe =	catc_probe,
+	.disconnect =	catc_disconnect,
+	.id_table =	catc_id_table,
+	.disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(catc_driver);