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, 506 insertions, 0 deletions

diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
new file mode 100644
index 000000000..d505b4b69
--- /dev/null
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -0,0 +1,506 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * Purpose: Handle USB control endpoint
+ *
+ * Author: Warren Hsu
+ *
+ * Date: Mar. 29, 2005
+ *
+ * Functions:
+ *	vnt_control_out - Write variable length bytes to MEM/BB/MAC/EEPROM
+ *	vnt_control_in - Read variable length bytes from MEM/BB/MAC/EEPROM
+ *	vnt_control_out_u8 - Write one byte to MEM/BB/MAC/EEPROM
+ *	vnt_control_in_u8 - Read one byte from MEM/BB/MAC/EEPROM
+ *
+ * Revision History:
+ *      04-05-2004 Jerry Chen: Initial release
+ *      11-24-2004 Warren Hsu: Add ControlvWriteByte,ControlvReadByte,
+ *                             ControlvMaskByte
+ *
+ */
+
+#include "rxtx.h"
+#include "desc.h"
+#include "device.h"
+#include "usbpipe.h"
+#include "mac.h"
+#include "rf.h"
+
+#define USB_CTL_WAIT	500 /* ms */
+
+int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
+		    u16 index, u16 length, const u8 *buffer)
+{
+	int ret = 0;
+	u8 *usb_buffer;
+
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
+		ret = -EINVAL;
+		goto end;
+	}
+
+	mutex_lock(&priv->usb_lock);
+
+	usb_buffer = kmemdup(buffer, length, GFP_KERNEL);
+	if (!usb_buffer) {
+		ret = -ENOMEM;
+		goto end_unlock;
+	}
+
+	ret = usb_control_msg(priv->usb,
+			      usb_sndctrlpipe(priv->usb, 0),
+			      request, 0x40, value,
+			      index, usb_buffer, length, USB_CTL_WAIT);
+
+	kfree(usb_buffer);
+
+	if (ret == (int)length)
+		ret = 0;
+	else
+		ret = -EIO;
+
+end_unlock:
+	mutex_unlock(&priv->usb_lock);
+end:
+	return ret;
+}
+
+int vnt_control_out_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 data)
+{
+	return vnt_control_out(priv, MESSAGE_TYPE_WRITE,
+			       reg_off, reg, sizeof(u8), &data);
+}
+
+int vnt_control_out_blocks(struct vnt_private *priv,
+			   u16 block, u8 reg, u16 length, const u8 *data)
+{
+	int ret = 0, i;
+
+	for (i = 0; i < length; i += block) {
+		u16 len = min_t(int, length - i, block);
+
+		ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE,
+				      i, reg, len, data + i);
+		if (ret)
+			goto end;
+	}
+end:
+	return ret;
+}
+
+int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
+		   u16 index, u16 length, u8 *buffer)
+{
+	int ret = 0;
+	u8 *usb_buffer;
+
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
+		ret = -EINVAL;
+		goto end;
+	}
+
+	mutex_lock(&priv->usb_lock);
+
+	usb_buffer = kmalloc(length, GFP_KERNEL);
+	if (!usb_buffer) {
+		ret = -ENOMEM;
+		goto end_unlock;
+	}
+
+	ret = usb_control_msg(priv->usb,
+			      usb_rcvctrlpipe(priv->usb, 0),
+			      request, 0xc0, value,
+			      index, usb_buffer, length, USB_CTL_WAIT);
+
+	if (ret == length)
+		memcpy(buffer, usb_buffer, length);
+
+	kfree(usb_buffer);
+
+	if (ret == (int)length)
+		ret = 0;
+	else
+		ret = -EIO;
+
+end_unlock:
+	mutex_unlock(&priv->usb_lock);
+end:
+	return ret;
+}
+
+int vnt_control_in_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 *data)
+{
+	return vnt_control_in(priv, MESSAGE_TYPE_READ,
+			      reg_off, reg, sizeof(u8), data);
+}
+
+static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr)
+{
+	struct vnt_usb_send_context *context;
+	struct ieee80211_tx_info *info;
+	u8 tx_retry = (tsr & 0xf0) >> 4;
+	s8 idx;
+
+	if (pkt_no >= priv->num_tx_context)
+		return -EINVAL;
+
+	context = priv->tx_context[pkt_no];
+
+	if (!context->skb)
+		return -EINVAL;
+
+	info = IEEE80211_SKB_CB(context->skb);
+	idx = info->control.rates[0].idx;
+
+	ieee80211_tx_info_clear_status(info);
+
+	info->status.rates[0].count = tx_retry;
+
+	if (!(tsr & TSR_TMO)) {
+		info->status.rates[0].idx = idx;
+
+		if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
+			info->flags |= IEEE80211_TX_STAT_ACK;
+	}
+
+	ieee80211_tx_status_irqsafe(priv->hw, context->skb);
+
+	context->in_use = false;
+
+	return 0;
+}
+
+static void vnt_int_process_data(struct vnt_private *priv)
+{
+	struct vnt_interrupt_data *int_data;
+	struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
+
+	dev_dbg(&priv->usb->dev, "---->s_nsInterruptProcessData\n");
+
+	int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf;
+
+	if (int_data->tsr0 & TSR_VALID)
+		vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0);
+
+	if (int_data->tsr1 & TSR_VALID)
+		vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1);
+
+	if (int_data->tsr2 & TSR_VALID)
+		vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2);
+
+	if (int_data->tsr3 & TSR_VALID)
+		vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3);
+
+	if (!int_data->isr0)
+		return;
+
+	if (int_data->isr0 & ISR_BNTX && priv->op_mode == NL80211_IFTYPE_AP)
+		vnt_schedule_command(priv, WLAN_CMD_BECON_SEND);
+
+	priv->current_tsf = le64_to_cpu(int_data->tsf);
+
+	low_stats->dot11RTSSuccessCount += int_data->rts_success;
+	low_stats->dot11RTSFailureCount += int_data->rts_fail;
+	low_stats->dot11ACKFailureCount += int_data->ack_fail;
+	low_stats->dot11FCSErrorCount += int_data->fcs_err;
+}
+
+static void vnt_start_interrupt_urb_complete(struct urb *urb)
+{
+	struct vnt_private *priv = urb->context;
+	int status = urb->status;
+
+	switch (status) {
+	case 0:
+	case -ETIMEDOUT:
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	default:
+		break;
+	}
+
+	if (status)
+		dev_dbg(&priv->usb->dev, "%s status = %d\n", __func__, status);
+	else
+		vnt_int_process_data(priv);
+
+	if (!test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
+		status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
+
+	if (status)
+		dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
+}
+
+int vnt_start_interrupt_urb(struct vnt_private *priv)
+{
+	int ret = 0;
+
+	dev_dbg(&priv->usb->dev, "---->Interrupt Polling Thread\n");
+
+	usb_fill_int_urb(priv->interrupt_urb,
+			 priv->usb,
+			 usb_rcvintpipe(priv->usb, 1),
+			 priv->int_buf.data_buf,
+			 MAX_INTERRUPT_SIZE,
+			 vnt_start_interrupt_urb_complete,
+			 priv,
+			 priv->int_interval);
+
+	ret = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
+	if (ret)
+		dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", ret);
+
+	return ret;
+}
+
+static int vnt_rx_data(struct vnt_private *priv, struct vnt_rcb *ptr_rcb,
+		       unsigned long bytes_received)
+{
+	struct ieee80211_hw *hw = priv->hw;
+	struct ieee80211_supported_band *sband;
+	struct sk_buff *skb;
+	struct ieee80211_rx_status *rx_status;
+	struct vnt_rx_header *head;
+	struct vnt_rx_tail *tail;
+	u32 frame_size;
+	int ii;
+	u16 rx_bitrate, pay_load_with_padding;
+	u8 rate_idx = 0;
+	long rx_dbm;
+
+	skb = ptr_rcb->skb;
+	rx_status = IEEE80211_SKB_RXCB(skb);
+
+	/* [31:16]RcvByteCount ( not include 4-byte Status ) */
+	head = (struct vnt_rx_header *)skb->data;
+	frame_size = head->wbk_status >> 16;
+	frame_size += 4;
+
+	if (bytes_received != frame_size) {
+		dev_dbg(&priv->usb->dev, "------- WRONG Length 1\n");
+		return false;
+	}
+
+	if ((bytes_received > 2372) || (bytes_received <= 40)) {
+		/* Frame Size error drop this packet.*/
+		dev_dbg(&priv->usb->dev, "------ WRONG Length 2\n");
+		return false;
+	}
+
+	/* real Frame Size = USBframe_size -4WbkStatus - 4RxStatus */
+	/* -8TSF - 4RSR - 4SQ3 - ?Padding */
+
+	/* if SQ3 the range is 24~27, if no SQ3 the range is 20~23 */
+
+	/*Fix hardware bug => PLCP_Length error */
+	if (((bytes_received - head->pay_load_len) > 27) ||
+	    ((bytes_received - head->pay_load_len) < 24) ||
+	    (bytes_received < head->pay_load_len)) {
+		dev_dbg(&priv->usb->dev, "Wrong PLCP Length %x\n",
+			head->pay_load_len);
+		return false;
+	}
+
+	sband = hw->wiphy->bands[hw->conf.chandef.chan->band];
+	rx_bitrate = head->rx_rate * 5; /* rx_rate * 5 */
+
+	for (ii = 0; ii < sband->n_bitrates; ii++) {
+		if (sband->bitrates[ii].bitrate == rx_bitrate) {
+			rate_idx = ii;
+				break;
+		}
+	}
+
+	if (ii == sband->n_bitrates) {
+		dev_dbg(&priv->usb->dev, "Wrong Rx Bit Rate %d\n", rx_bitrate);
+		return false;
+	}
+
+	pay_load_with_padding = ((head->pay_load_len / 4) +
+		((head->pay_load_len % 4) ? 1 : 0)) * 4;
+
+	tail = (struct vnt_rx_tail *)(skb->data +
+				      sizeof(*head) + pay_load_with_padding);
+	priv->tsf_time = le64_to_cpu(tail->tsf_time);
+
+	if (tail->rsr & (RSR_IVLDTYP | RSR_IVLDLEN))
+		return false;
+
+	vnt_rf_rssi_to_dbm(priv, tail->rssi, &rx_dbm);
+
+	priv->bb_pre_ed_rssi = (u8)-rx_dbm + 1;
+	priv->current_rssi = priv->bb_pre_ed_rssi;
+
+	skb_pull(skb, sizeof(*head));
+	skb_trim(skb, head->pay_load_len);
+
+	rx_status->mactime = priv->tsf_time;
+	rx_status->band = hw->conf.chandef.chan->band;
+	rx_status->signal = rx_dbm;
+	rx_status->flag = 0;
+	rx_status->freq = hw->conf.chandef.chan->center_freq;
+
+	if (!(tail->rsr & RSR_CRCOK))
+		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+
+	rx_status->rate_idx = rate_idx;
+
+	if (tail->new_rsr & NEWRSR_DECRYPTOK)
+		rx_status->flag |= RX_FLAG_DECRYPTED;
+
+	ieee80211_rx_irqsafe(priv->hw, skb);
+
+	return true;
+}
+
+static void vnt_submit_rx_urb_complete(struct urb *urb)
+{
+	struct vnt_rcb *rcb = urb->context;
+	struct vnt_private *priv = rcb->priv;
+
+	switch (urb->status) {
+	case 0:
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	case -ETIMEDOUT:
+	default:
+		dev_dbg(&priv->usb->dev, "BULK In failed %d\n", urb->status);
+		break;
+	}
+
+	if (urb->actual_length) {
+		if (vnt_rx_data(priv, rcb, urb->actual_length)) {
+			rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
+			if (!rcb->skb)
+				return;
+		} else {
+			skb_push(rcb->skb, skb_headroom(rcb->skb));
+			skb_trim(rcb->skb, 0);
+		}
+
+		urb->transfer_buffer = skb_put(rcb->skb,
+					       skb_tailroom(rcb->skb));
+	}
+
+	if (usb_submit_urb(urb, GFP_ATOMIC))
+		dev_dbg(&priv->usb->dev, "Failed to re submit rx skb\n");
+}
+
+int vnt_submit_rx_urb(struct vnt_private *priv, struct vnt_rcb *rcb)
+{
+	int ret = 0;
+	struct urb *urb = rcb->urb;
+
+	if (!rcb->skb) {
+		dev_dbg(&priv->usb->dev, "rcb->skb is null\n");
+		ret = -EINVAL;
+		goto end;
+	}
+
+	usb_fill_bulk_urb(urb,
+			  priv->usb,
+			  usb_rcvbulkpipe(priv->usb, 2),
+			  skb_put(rcb->skb, skb_tailroom(rcb->skb)),
+			  MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
+			  vnt_submit_rx_urb_complete,
+			  rcb);
+
+	ret = usb_submit_urb(urb, GFP_ATOMIC);
+	if (ret)
+		dev_dbg(&priv->usb->dev, "Submit Rx URB failed %d\n", ret);
+end:
+	return ret;
+}
+
+static void vnt_tx_context_complete(struct urb *urb)
+{
+	struct vnt_usb_send_context *context = urb->context;
+	struct vnt_private *priv = context->priv;
+
+	switch (urb->status) {
+	case 0:
+		dev_dbg(&priv->usb->dev,
+			"Write %d bytes\n", urb->actual_length);
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		context->in_use = false;
+		return;
+	case -ETIMEDOUT:
+	default:
+		dev_dbg(&priv->usb->dev, "BULK Out failed %d\n", urb->status);
+		break;
+	}
+
+	if (context->type == CONTEXT_DATA_PACKET)
+		ieee80211_wake_queues(priv->hw);
+
+	if (urb->status || context->type == CONTEXT_BEACON_PACKET) {
+		if (context->skb)
+			ieee80211_free_txskb(priv->hw, context->skb);
+
+		context->in_use = false;
+	}
+}
+
+int vnt_tx_context(struct vnt_private *priv,
+		   struct vnt_usb_send_context *context,
+		   struct sk_buff *skb)
+{
+	struct vnt_tx_usb_header *usb;
+	struct urb *urb;
+	int status;
+	u16 count = skb->len;
+
+	usb = skb_push(skb, sizeof(*usb));
+	usb->tx_byte_count = cpu_to_le16(count);
+	usb->pkt_no = context->pkt_no;
+	usb->type = context->type;
+
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
+		context->in_use = false;
+		return -ENODEV;
+	}
+
+	if (skb->len > MAX_TOTAL_SIZE_WITH_ALL_HEADERS) {
+		context->in_use = false;
+		return -E2BIG;
+	}
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		context->in_use = false;
+		return -ENOMEM;
+	}
+
+	usb_fill_bulk_urb(urb,
+			  priv->usb,
+			  usb_sndbulkpipe(priv->usb, 3),
+			  skb->data,
+			  skb->len,
+			  vnt_tx_context_complete,
+			  context);
+
+	usb_anchor_urb(urb, &priv->tx_submitted);
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status) {
+		dev_dbg(&priv->usb->dev, "Submit Tx URB failed %d\n", status);
+		usb_unanchor_urb(urb);
+		context->in_use = false;
+	}
+
+	usb_free_urb(urb);
+
+	return status;
+}