Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 1448 insertions, 0 deletions

diff --git a/qemu/hw/usb/dev-network.c b/qemu/hw/usb/dev-network.c
new file mode 100644
index 000000000..7800ceea5
--- /dev/null
+++ b/qemu/hw/usb/dev-network.c
@@ -0,0 +1,1448 @@
+/*
+ * QEMU USB Net devices
+ *
+ * Copyright (c) 2006 Thomas Sailer
+ * Copyright (c) 2008 Andrzej Zaborowski
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu-common.h"
+#include "hw/usb.h"
+#include "hw/usb/desc.h"
+#include "net/net.h"
+#include "qemu/error-report.h"
+#include "qemu/queue.h"
+#include "qemu/config-file.h"
+#include "sysemu/sysemu.h"
+#include "qemu/iov.h"
+
+/*#define TRAFFIC_DEBUG*/
+/* Thanks to NetChip Technologies for donating this product ID.
+ * It's for devices with only CDC Ethernet configurations.
+ */
+#define CDC_VENDOR_NUM          0x0525  /* NetChip */
+#define CDC_PRODUCT_NUM         0xa4a1  /* Linux-USB Ethernet Gadget */
+/* For hardware that can talk RNDIS and either of the above protocols,
+ * use this ID ... the windows INF files will know it.
+ */
+#define RNDIS_VENDOR_NUM        0x0525  /* NetChip */
+#define RNDIS_PRODUCT_NUM       0xa4a2  /* Ethernet/RNDIS Gadget */
+
+enum usbstring_idx {
+    STRING_MANUFACTURER		= 1,
+    STRING_PRODUCT,
+    STRING_ETHADDR,
+    STRING_DATA,
+    STRING_CONTROL,
+    STRING_RNDIS_CONTROL,
+    STRING_CDC,
+    STRING_SUBSET,
+    STRING_RNDIS,
+    STRING_SERIALNUMBER,
+};
+
+#define DEV_CONFIG_VALUE		1	/* CDC or a subset */
+#define DEV_RNDIS_CONFIG_VALUE		2	/* RNDIS; optional */
+
+#define USB_CDC_SUBCLASS_ACM		0x02
+#define USB_CDC_SUBCLASS_ETHERNET	0x06
+
+#define USB_CDC_PROTO_NONE		0
+#define USB_CDC_ACM_PROTO_VENDOR	0xff
+
+#define USB_CDC_HEADER_TYPE		0x00	/* header_desc */
+#define USB_CDC_CALL_MANAGEMENT_TYPE	0x01	/* call_mgmt_descriptor */
+#define USB_CDC_ACM_TYPE		0x02	/* acm_descriptor */
+#define USB_CDC_UNION_TYPE		0x06	/* union_desc */
+#define USB_CDC_ETHERNET_TYPE		0x0f	/* ether_desc */
+
+#define USB_CDC_SEND_ENCAPSULATED_COMMAND	0x00
+#define USB_CDC_GET_ENCAPSULATED_RESPONSE	0x01
+#define USB_CDC_REQ_SET_LINE_CODING		0x20
+#define USB_CDC_REQ_GET_LINE_CODING		0x21
+#define USB_CDC_REQ_SET_CONTROL_LINE_STATE	0x22
+#define USB_CDC_REQ_SEND_BREAK			0x23
+#define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS	0x40
+#define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER	0x41
+#define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER	0x42
+#define USB_CDC_SET_ETHERNET_PACKET_FILTER	0x43
+#define USB_CDC_GET_ETHERNET_STATISTIC		0x44
+
+#define LOG2_STATUS_INTERVAL_MSEC	5    /* 1 << 5 == 32 msec */
+#define STATUS_BYTECOUNT		16   /* 8 byte header + data */
+
+#define ETH_FRAME_LEN			1514 /* Max. octets in frame sans FCS */
+
+static const USBDescStrings usb_net_stringtable = {
+    [STRING_MANUFACTURER]       = "QEMU",
+    [STRING_PRODUCT]            = "RNDIS/QEMU USB Network Device",
+    [STRING_ETHADDR]            = "400102030405",
+    [STRING_DATA]               = "QEMU USB Net Data Interface",
+    [STRING_CONTROL]            = "QEMU USB Net Control Interface",
+    [STRING_RNDIS_CONTROL]      = "QEMU USB Net RNDIS Control Interface",
+    [STRING_CDC]                = "QEMU USB Net CDC",
+    [STRING_SUBSET]             = "QEMU USB Net Subset",
+    [STRING_RNDIS]              = "QEMU USB Net RNDIS",
+    [STRING_SERIALNUMBER]       = "1",
+};
+
+static const USBDescIface desc_iface_rndis[] = {
+    {
+        /* RNDIS Control Interface */
+        .bInterfaceNumber              = 0,
+        .bNumEndpoints                 = 1,
+        .bInterfaceClass               = USB_CLASS_COMM,
+        .bInterfaceSubClass            = USB_CDC_SUBCLASS_ACM,
+        .bInterfaceProtocol            = USB_CDC_ACM_PROTO_VENDOR,
+        .iInterface                    = STRING_RNDIS_CONTROL,
+        .ndesc                         = 4,
+        .descs = (USBDescOther[]) {
+            {
+                /* Header Descriptor */
+                .data = (uint8_t[]) {
+                    0x05,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_HEADER_TYPE,        /*  u8    bDescriptorSubType */
+                    0x10, 0x01,                 /*  le16  bcdCDC */
+                },
+            },{
+                /* Call Management Descriptor */
+                .data = (uint8_t[]) {
+                    0x05,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_CALL_MANAGEMENT_TYPE, /*  u8    bDescriptorSubType */
+                    0x00,                       /*  u8    bmCapabilities */
+                    0x01,                       /*  u8    bDataInterface */
+                },
+            },{
+                /* ACM Descriptor */
+                .data = (uint8_t[]) {
+                    0x04,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_ACM_TYPE,           /*  u8    bDescriptorSubType */
+                    0x00,                       /*  u8    bmCapabilities */
+                },
+            },{
+                /* Union Descriptor */
+                .data = (uint8_t[]) {
+                    0x05,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_UNION_TYPE,         /*  u8    bDescriptorSubType */
+                    0x00,                       /*  u8    bMasterInterface0 */
+                    0x01,                       /*  u8    bSlaveInterface0 */
+                },
+            },
+        },
+        .eps = (USBDescEndpoint[]) {
+            {
+                .bEndpointAddress      = USB_DIR_IN | 0x01,
+                .bmAttributes          = USB_ENDPOINT_XFER_INT,
+                .wMaxPacketSize        = STATUS_BYTECOUNT,
+                .bInterval             = 1 << LOG2_STATUS_INTERVAL_MSEC,
+            },
+        }
+    },{
+        /* RNDIS Data Interface */
+        .bInterfaceNumber              = 1,
+        .bNumEndpoints                 = 2,
+        .bInterfaceClass               = USB_CLASS_CDC_DATA,
+        .iInterface                    = STRING_DATA,
+        .eps = (USBDescEndpoint[]) {
+            {
+                .bEndpointAddress      = USB_DIR_IN | 0x02,
+                .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+                .wMaxPacketSize        = 0x40,
+            },{
+                .bEndpointAddress      = USB_DIR_OUT | 0x02,
+                .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+                .wMaxPacketSize        = 0x40,
+            }
+        }
+    }
+};
+
+static const USBDescIface desc_iface_cdc[] = {
+    {
+        /* CDC Control Interface */
+        .bInterfaceNumber              = 0,
+        .bNumEndpoints                 = 1,
+        .bInterfaceClass               = USB_CLASS_COMM,
+        .bInterfaceSubClass            = USB_CDC_SUBCLASS_ETHERNET,
+        .bInterfaceProtocol            = USB_CDC_PROTO_NONE,
+        .iInterface                    = STRING_CONTROL,
+        .ndesc                         = 3,
+        .descs = (USBDescOther[]) {
+            {
+                /* Header Descriptor */
+                .data = (uint8_t[]) {
+                    0x05,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_HEADER_TYPE,        /*  u8    bDescriptorSubType */
+                    0x10, 0x01,                 /*  le16  bcdCDC */
+                },
+            },{
+                /* Union Descriptor */
+                .data = (uint8_t[]) {
+                    0x05,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_UNION_TYPE,         /*  u8    bDescriptorSubType */
+                    0x00,                       /*  u8    bMasterInterface0 */
+                    0x01,                       /*  u8    bSlaveInterface0 */
+                },
+            },{
+                /* Ethernet Descriptor */
+                .data = (uint8_t[]) {
+                    0x0d,                       /*  u8    bLength */
+                    USB_DT_CS_INTERFACE,        /*  u8    bDescriptorType */
+                    USB_CDC_ETHERNET_TYPE,      /*  u8    bDescriptorSubType */
+                    STRING_ETHADDR,             /*  u8    iMACAddress */
+                    0x00, 0x00, 0x00, 0x00,     /*  le32  bmEthernetStatistics */
+                    ETH_FRAME_LEN & 0xff,
+                    ETH_FRAME_LEN >> 8,         /*  le16  wMaxSegmentSize */
+                    0x00, 0x00,                 /*  le16  wNumberMCFilters */
+                    0x00,                       /*  u8    bNumberPowerFilters */
+                },
+            },
+        },
+        .eps = (USBDescEndpoint[]) {
+            {
+                .bEndpointAddress      = USB_DIR_IN | 0x01,
+                .bmAttributes          = USB_ENDPOINT_XFER_INT,
+                .wMaxPacketSize        = STATUS_BYTECOUNT,
+                .bInterval             = 1 << LOG2_STATUS_INTERVAL_MSEC,
+            },
+        }
+    },{
+        /* CDC Data Interface (off) */
+        .bInterfaceNumber              = 1,
+        .bAlternateSetting             = 0,
+        .bNumEndpoints                 = 0,
+        .bInterfaceClass               = USB_CLASS_CDC_DATA,
+    },{
+        /* CDC Data Interface */
+        .bInterfaceNumber              = 1,
+        .bAlternateSetting             = 1,
+        .bNumEndpoints                 = 2,
+        .bInterfaceClass               = USB_CLASS_CDC_DATA,
+        .iInterface                    = STRING_DATA,
+        .eps = (USBDescEndpoint[]) {
+            {
+                .bEndpointAddress      = USB_DIR_IN | 0x02,
+                .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+                .wMaxPacketSize        = 0x40,
+            },{
+                .bEndpointAddress      = USB_DIR_OUT | 0x02,
+                .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+                .wMaxPacketSize        = 0x40,
+            }
+        }
+    }
+};
+
+static const USBDescDevice desc_device_net = {
+    .bcdUSB                        = 0x0200,
+    .bDeviceClass                  = USB_CLASS_COMM,
+    .bMaxPacketSize0               = 0x40,
+    .bNumConfigurations            = 2,
+    .confs = (USBDescConfig[]) {
+        {
+            .bNumInterfaces        = 2,
+            .bConfigurationValue   = DEV_RNDIS_CONFIG_VALUE,
+            .iConfiguration        = STRING_RNDIS,
+            .bmAttributes          = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
+            .bMaxPower             = 0x32,
+            .nif = ARRAY_SIZE(desc_iface_rndis),
+            .ifs = desc_iface_rndis,
+        },{
+            .bNumInterfaces        = 2,
+            .bConfigurationValue   = DEV_CONFIG_VALUE,
+            .iConfiguration        = STRING_CDC,
+            .bmAttributes          = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
+            .bMaxPower             = 0x32,
+            .nif = ARRAY_SIZE(desc_iface_cdc),
+            .ifs = desc_iface_cdc,
+        }
+    },
+};
+
+static const USBDesc desc_net = {
+    .id = {
+        .idVendor          = RNDIS_VENDOR_NUM,
+        .idProduct         = RNDIS_PRODUCT_NUM,
+        .bcdDevice         = 0,
+        .iManufacturer     = STRING_MANUFACTURER,
+        .iProduct          = STRING_PRODUCT,
+        .iSerialNumber     = STRING_SERIALNUMBER,
+    },
+    .full = &desc_device_net,
+    .str  = usb_net_stringtable,
+};
+
+/*
+ * RNDIS Definitions - in theory not specific to USB.
+ */
+#define RNDIS_MAXIMUM_FRAME_SIZE	1518
+#define RNDIS_MAX_TOTAL_SIZE		1558
+
+/* Remote NDIS Versions */
+#define RNDIS_MAJOR_VERSION		1
+#define RNDIS_MINOR_VERSION		0
+
+/* Status Values */
+#define RNDIS_STATUS_SUCCESS		0x00000000U /* Success */
+#define RNDIS_STATUS_FAILURE		0xc0000001U /* Unspecified error */
+#define RNDIS_STATUS_INVALID_DATA	0xc0010015U /* Invalid data */
+#define RNDIS_STATUS_NOT_SUPPORTED	0xc00000bbU /* Unsupported request */
+#define RNDIS_STATUS_MEDIA_CONNECT	0x4001000bU /* Device connected */
+#define RNDIS_STATUS_MEDIA_DISCONNECT	0x4001000cU /* Device disconnected */
+
+/* Message Set for Connectionless (802.3) Devices */
+enum {
+    RNDIS_PACKET_MSG		= 1,
+    RNDIS_INITIALIZE_MSG	= 2,	/* Initialize device */
+    RNDIS_HALT_MSG		= 3,
+    RNDIS_QUERY_MSG		= 4,
+    RNDIS_SET_MSG		= 5,
+    RNDIS_RESET_MSG		= 6,
+    RNDIS_INDICATE_STATUS_MSG	= 7,
+    RNDIS_KEEPALIVE_MSG		= 8,
+};
+
+/* Message completion */
+enum {
+    RNDIS_INITIALIZE_CMPLT	= 0x80000002U,
+    RNDIS_QUERY_CMPLT		= 0x80000004U,
+    RNDIS_SET_CMPLT		= 0x80000005U,
+    RNDIS_RESET_CMPLT		= 0x80000006U,
+    RNDIS_KEEPALIVE_CMPLT	= 0x80000008U,
+};
+
+/* Device Flags */
+enum {
+    RNDIS_DF_CONNECTIONLESS	= 1,
+    RNDIS_DF_CONNECTIONORIENTED	= 2,
+};
+
+#define RNDIS_MEDIUM_802_3		0x00000000U
+
+/* from drivers/net/sk98lin/h/skgepnmi.h */
+#define OID_PNP_CAPABILITIES		0xfd010100
+#define OID_PNP_SET_POWER		0xfd010101
+#define OID_PNP_QUERY_POWER		0xfd010102
+#define OID_PNP_ADD_WAKE_UP_PATTERN	0xfd010103
+#define OID_PNP_REMOVE_WAKE_UP_PATTERN	0xfd010104
+#define OID_PNP_ENABLE_WAKE_UP		0xfd010106
+
+typedef uint32_t le32;
+
+typedef struct rndis_init_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 MajorVersion;
+    le32 MinorVersion;
+    le32 MaxTransferSize;
+} rndis_init_msg_type;
+
+typedef struct rndis_init_cmplt_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 Status;
+    le32 MajorVersion;
+    le32 MinorVersion;
+    le32 DeviceFlags;
+    le32 Medium;
+    le32 MaxPacketsPerTransfer;
+    le32 MaxTransferSize;
+    le32 PacketAlignmentFactor;
+    le32 AFListOffset;
+    le32 AFListSize;
+} rndis_init_cmplt_type;
+
+typedef struct rndis_halt_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+} rndis_halt_msg_type;
+
+typedef struct rndis_query_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 OID;
+    le32 InformationBufferLength;
+    le32 InformationBufferOffset;
+    le32 DeviceVcHandle;
+} rndis_query_msg_type;
+
+typedef struct rndis_query_cmplt_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 Status;
+    le32 InformationBufferLength;
+    le32 InformationBufferOffset;
+} rndis_query_cmplt_type;
+
+typedef struct rndis_set_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 OID;
+    le32 InformationBufferLength;
+    le32 InformationBufferOffset;
+    le32 DeviceVcHandle;
+} rndis_set_msg_type;
+
+typedef struct rndis_set_cmplt_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 Status;
+} rndis_set_cmplt_type;
+
+typedef struct rndis_reset_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 Reserved;
+} rndis_reset_msg_type;
+
+typedef struct rndis_reset_cmplt_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 Status;
+    le32 AddressingReset;
+} rndis_reset_cmplt_type;
+
+typedef struct rndis_indicate_status_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 Status;
+    le32 StatusBufferLength;
+    le32 StatusBufferOffset;
+} rndis_indicate_status_msg_type;
+
+typedef struct rndis_keepalive_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+} rndis_keepalive_msg_type;
+
+typedef struct rndis_keepalive_cmplt_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 RequestID;
+    le32 Status;
+} rndis_keepalive_cmplt_type;
+
+struct rndis_packet_msg_type {
+    le32 MessageType;
+    le32 MessageLength;
+    le32 DataOffset;
+    le32 DataLength;
+    le32 OOBDataOffset;
+    le32 OOBDataLength;
+    le32 NumOOBDataElements;
+    le32 PerPacketInfoOffset;
+    le32 PerPacketInfoLength;
+    le32 VcHandle;
+    le32 Reserved;
+};
+
+struct rndis_config_parameter {
+    le32 ParameterNameOffset;
+    le32 ParameterNameLength;
+    le32 ParameterType;
+    le32 ParameterValueOffset;
+    le32 ParameterValueLength;
+};
+
+/* implementation specific */
+enum rndis_state
+{
+    RNDIS_UNINITIALIZED,
+    RNDIS_INITIALIZED,
+    RNDIS_DATA_INITIALIZED,
+};
+
+/* from ndis.h */
+enum ndis_oid {
+    /* Required Object IDs (OIDs) */
+    OID_GEN_SUPPORTED_LIST		= 0x00010101,
+    OID_GEN_HARDWARE_STATUS		= 0x00010102,
+    OID_GEN_MEDIA_SUPPORTED		= 0x00010103,
+    OID_GEN_MEDIA_IN_USE		= 0x00010104,
+    OID_GEN_MAXIMUM_LOOKAHEAD		= 0x00010105,
+    OID_GEN_MAXIMUM_FRAME_SIZE		= 0x00010106,
+    OID_GEN_LINK_SPEED			= 0x00010107,
+    OID_GEN_TRANSMIT_BUFFER_SPACE	= 0x00010108,
+    OID_GEN_RECEIVE_BUFFER_SPACE	= 0x00010109,
+    OID_GEN_TRANSMIT_BLOCK_SIZE		= 0x0001010a,
+    OID_GEN_RECEIVE_BLOCK_SIZE		= 0x0001010b,
+    OID_GEN_VENDOR_ID			= 0x0001010c,
+    OID_GEN_VENDOR_DESCRIPTION		= 0x0001010d,
+    OID_GEN_CURRENT_PACKET_FILTER	= 0x0001010e,
+    OID_GEN_CURRENT_LOOKAHEAD		= 0x0001010f,
+    OID_GEN_DRIVER_VERSION		= 0x00010110,
+    OID_GEN_MAXIMUM_TOTAL_SIZE		= 0x00010111,
+    OID_GEN_PROTOCOL_OPTIONS		= 0x00010112,
+    OID_GEN_MAC_OPTIONS			= 0x00010113,
+    OID_GEN_MEDIA_CONNECT_STATUS	= 0x00010114,
+    OID_GEN_MAXIMUM_SEND_PACKETS	= 0x00010115,
+    OID_GEN_VENDOR_DRIVER_VERSION	= 0x00010116,
+    OID_GEN_SUPPORTED_GUIDS		= 0x00010117,
+    OID_GEN_NETWORK_LAYER_ADDRESSES	= 0x00010118,
+    OID_GEN_TRANSPORT_HEADER_OFFSET	= 0x00010119,
+    OID_GEN_MACHINE_NAME		= 0x0001021a,
+    OID_GEN_RNDIS_CONFIG_PARAMETER	= 0x0001021b,
+    OID_GEN_VLAN_ID			= 0x0001021c,
+
+    /* Optional OIDs */
+    OID_GEN_MEDIA_CAPABILITIES		= 0x00010201,
+    OID_GEN_PHYSICAL_MEDIUM		= 0x00010202,
+
+    /* Required statistics OIDs */
+    OID_GEN_XMIT_OK			= 0x00020101,
+    OID_GEN_RCV_OK			= 0x00020102,
+    OID_GEN_XMIT_ERROR			= 0x00020103,
+    OID_GEN_RCV_ERROR			= 0x00020104,
+    OID_GEN_RCV_NO_BUFFER		= 0x00020105,
+
+    /* Optional statistics OIDs */
+    OID_GEN_DIRECTED_BYTES_XMIT		= 0x00020201,
+    OID_GEN_DIRECTED_FRAMES_XMIT	= 0x00020202,
+    OID_GEN_MULTICAST_BYTES_XMIT	= 0x00020203,
+    OID_GEN_MULTICAST_FRAMES_XMIT	= 0x00020204,
+    OID_GEN_BROADCAST_BYTES_XMIT	= 0x00020205,
+    OID_GEN_BROADCAST_FRAMES_XMIT	= 0x00020206,
+    OID_GEN_DIRECTED_BYTES_RCV		= 0x00020207,
+    OID_GEN_DIRECTED_FRAMES_RCV		= 0x00020208,
+    OID_GEN_MULTICAST_BYTES_RCV		= 0x00020209,
+    OID_GEN_MULTICAST_FRAMES_RCV	= 0x0002020a,
+    OID_GEN_BROADCAST_BYTES_RCV		= 0x0002020b,
+    OID_GEN_BROADCAST_FRAMES_RCV	= 0x0002020c,
+    OID_GEN_RCV_CRC_ERROR		= 0x0002020d,
+    OID_GEN_TRANSMIT_QUEUE_LENGTH	= 0x0002020e,
+    OID_GEN_GET_TIME_CAPS		= 0x0002020f,
+    OID_GEN_GET_NETCARD_TIME		= 0x00020210,
+    OID_GEN_NETCARD_LOAD		= 0x00020211,
+    OID_GEN_DEVICE_PROFILE		= 0x00020212,
+    OID_GEN_INIT_TIME_MS		= 0x00020213,
+    OID_GEN_RESET_COUNTS		= 0x00020214,
+    OID_GEN_MEDIA_SENSE_COUNTS		= 0x00020215,
+    OID_GEN_FRIENDLY_NAME		= 0x00020216,
+    OID_GEN_MINIPORT_INFO		= 0x00020217,
+    OID_GEN_RESET_VERIFY_PARAMETERS	= 0x00020218,
+
+    /* IEEE 802.3 (Ethernet) OIDs */
+    OID_802_3_PERMANENT_ADDRESS		= 0x01010101,
+    OID_802_3_CURRENT_ADDRESS		= 0x01010102,
+    OID_802_3_MULTICAST_LIST		= 0x01010103,
+    OID_802_3_MAXIMUM_LIST_SIZE		= 0x01010104,
+    OID_802_3_MAC_OPTIONS		= 0x01010105,
+    OID_802_3_RCV_ERROR_ALIGNMENT	= 0x01020101,
+    OID_802_3_XMIT_ONE_COLLISION	= 0x01020102,
+    OID_802_3_XMIT_MORE_COLLISIONS	= 0x01020103,
+    OID_802_3_XMIT_DEFERRED		= 0x01020201,
+    OID_802_3_XMIT_MAX_COLLISIONS	= 0x01020202,
+    OID_802_3_RCV_OVERRUN		= 0x01020203,
+    OID_802_3_XMIT_UNDERRUN		= 0x01020204,
+    OID_802_3_XMIT_HEARTBEAT_FAILURE	= 0x01020205,
+    OID_802_3_XMIT_TIMES_CRS_LOST	= 0x01020206,
+    OID_802_3_XMIT_LATE_COLLISIONS	= 0x01020207,
+};
+
+static const uint32_t oid_supported_list[] =
+{
+    /* the general stuff */
+    OID_GEN_SUPPORTED_LIST,
+    OID_GEN_HARDWARE_STATUS,
+    OID_GEN_MEDIA_SUPPORTED,
+    OID_GEN_MEDIA_IN_USE,
+    OID_GEN_MAXIMUM_FRAME_SIZE,
+    OID_GEN_LINK_SPEED,
+    OID_GEN_TRANSMIT_BLOCK_SIZE,
+    OID_GEN_RECEIVE_BLOCK_SIZE,
+    OID_GEN_VENDOR_ID,
+    OID_GEN_VENDOR_DESCRIPTION,
+    OID_GEN_VENDOR_DRIVER_VERSION,
+    OID_GEN_CURRENT_PACKET_FILTER,
+    OID_GEN_MAXIMUM_TOTAL_SIZE,
+    OID_GEN_MEDIA_CONNECT_STATUS,
+    OID_GEN_PHYSICAL_MEDIUM,
+
+    /* the statistical stuff */
+    OID_GEN_XMIT_OK,
+    OID_GEN_RCV_OK,
+    OID_GEN_XMIT_ERROR,
+    OID_GEN_RCV_ERROR,
+    OID_GEN_RCV_NO_BUFFER,
+
+    /* IEEE 802.3 */
+    /* the general stuff */
+    OID_802_3_PERMANENT_ADDRESS,
+    OID_802_3_CURRENT_ADDRESS,
+    OID_802_3_MULTICAST_LIST,
+    OID_802_3_MAC_OPTIONS,
+    OID_802_3_MAXIMUM_LIST_SIZE,
+
+    /* the statistical stuff */
+    OID_802_3_RCV_ERROR_ALIGNMENT,
+    OID_802_3_XMIT_ONE_COLLISION,
+    OID_802_3_XMIT_MORE_COLLISIONS,
+};
+
+#define NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA	(1 << 0)
+#define NDIS_MAC_OPTION_RECEIVE_SERIALIZED	(1 << 1)
+#define NDIS_MAC_OPTION_TRANSFERS_NOT_PEND	(1 << 2)
+#define NDIS_MAC_OPTION_NO_LOOPBACK		(1 << 3)
+#define NDIS_MAC_OPTION_FULL_DUPLEX		(1 << 4)
+#define NDIS_MAC_OPTION_EOTX_INDICATION		(1 << 5)
+#define NDIS_MAC_OPTION_8021P_PRIORITY		(1 << 6)
+
+struct rndis_response {
+    QTAILQ_ENTRY(rndis_response) entries;
+    uint32_t length;
+    uint8_t buf[0];
+};
+
+typedef struct USBNetState {
+    USBDevice dev;
+
+    enum rndis_state rndis_state;
+    uint32_t medium;
+    uint32_t speed;
+    uint32_t media_state;
+    uint16_t filter;
+    uint32_t vendorid;
+
+    unsigned int out_ptr;
+    uint8_t out_buf[2048];
+
+    unsigned int in_ptr, in_len;
+    uint8_t in_buf[2048];
+
+    USBEndpoint *intr;
+
+    char usbstring_mac[13];
+    NICState *nic;
+    NICConf conf;
+    QTAILQ_HEAD(rndis_resp_head, rndis_response) rndis_resp;
+} USBNetState;
+
+#define TYPE_USB_NET "usb-net"
+#define USB_NET(obj) OBJECT_CHECK(USBNetState, (obj), TYPE_USB_NET)
+
+static int is_rndis(USBNetState *s)
+{
+    return s->dev.config->bConfigurationValue == DEV_RNDIS_CONFIG_VALUE;
+}
+
+static int ndis_query(USBNetState *s, uint32_t oid,
+                      uint8_t *inbuf, unsigned int inlen, uint8_t *outbuf,
+                      size_t outlen)
+{
+    unsigned int i;
+
+    switch (oid) {
+    /* general oids (table 4-1) */
+    /* mandatory */
+    case OID_GEN_SUPPORTED_LIST:
+        for (i = 0; i < ARRAY_SIZE(oid_supported_list); i++)
+            ((le32 *) outbuf)[i] = cpu_to_le32(oid_supported_list[i]);
+        return sizeof(oid_supported_list);
+
+    /* mandatory */
+    case OID_GEN_HARDWARE_STATUS:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_MEDIA_SUPPORTED:
+        *((le32 *) outbuf) = cpu_to_le32(s->medium);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_MEDIA_IN_USE:
+        *((le32 *) outbuf) = cpu_to_le32(s->medium);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_MAXIMUM_FRAME_SIZE:
+        *((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_LINK_SPEED:
+        *((le32 *) outbuf) = cpu_to_le32(s->speed);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_TRANSMIT_BLOCK_SIZE:
+        *((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_RECEIVE_BLOCK_SIZE:
+        *((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_VENDOR_ID:
+        *((le32 *) outbuf) = cpu_to_le32(s->vendorid);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_VENDOR_DESCRIPTION:
+        pstrcpy((char *)outbuf, outlen, "QEMU USB RNDIS Net");
+        return strlen((char *)outbuf) + 1;
+
+    case OID_GEN_VENDOR_DRIVER_VERSION:
+        *((le32 *) outbuf) = cpu_to_le32(1);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_CURRENT_PACKET_FILTER:
+        *((le32 *) outbuf) = cpu_to_le32(s->filter);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_MAXIMUM_TOTAL_SIZE:
+        *((le32 *) outbuf) = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_MEDIA_CONNECT_STATUS:
+        *((le32 *) outbuf) = cpu_to_le32(s->media_state);
+        return sizeof(le32);
+
+    case OID_GEN_PHYSICAL_MEDIUM:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    case OID_GEN_MAC_OPTIONS:
+        *((le32 *) outbuf) = cpu_to_le32(
+                        NDIS_MAC_OPTION_RECEIVE_SERIALIZED |
+                        NDIS_MAC_OPTION_FULL_DUPLEX);
+        return sizeof(le32);
+
+    /* statistics OIDs (table 4-2) */
+    /* mandatory */
+    case OID_GEN_XMIT_OK:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_RCV_OK:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_XMIT_ERROR:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_RCV_ERROR:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_GEN_RCV_NO_BUFFER:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* ieee802.3 OIDs (table 4-3) */
+    /* mandatory */
+    case OID_802_3_PERMANENT_ADDRESS:
+        memcpy(outbuf, s->conf.macaddr.a, 6);
+        return 6;
+
+    /* mandatory */
+    case OID_802_3_CURRENT_ADDRESS:
+        memcpy(outbuf, s->conf.macaddr.a, 6);
+        return 6;
+
+    /* mandatory */
+    case OID_802_3_MULTICAST_LIST:
+        *((le32 *) outbuf) = cpu_to_le32(0xe0000000);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_802_3_MAXIMUM_LIST_SIZE:
+        *((le32 *) outbuf) = cpu_to_le32(1);
+        return sizeof(le32);
+
+    case OID_802_3_MAC_OPTIONS:
+        return 0;
+
+    /* ieee802.3 statistics OIDs (table 4-4) */
+    /* mandatory */
+    case OID_802_3_RCV_ERROR_ALIGNMENT:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_802_3_XMIT_ONE_COLLISION:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    /* mandatory */
+    case OID_802_3_XMIT_MORE_COLLISIONS:
+        *((le32 *) outbuf) = cpu_to_le32(0);
+        return sizeof(le32);
+
+    default:
+        fprintf(stderr, "usbnet: unknown OID 0x%08x\n", oid);
+        return 0;
+    }
+    return -1;
+}
+
+static int ndis_set(USBNetState *s, uint32_t oid,
+                uint8_t *inbuf, unsigned int inlen)
+{
+    switch (oid) {
+    case OID_GEN_CURRENT_PACKET_FILTER:
+        s->filter = le32_to_cpup((le32 *) inbuf);
+        if (s->filter) {
+            s->rndis_state = RNDIS_DATA_INITIALIZED;
+        } else {
+            s->rndis_state = RNDIS_INITIALIZED;
+        }
+        return 0;
+
+    case OID_802_3_MULTICAST_LIST:
+        return 0;
+    }
+    return -1;
+}
+
+static int rndis_get_response(USBNetState *s, uint8_t *buf)
+{
+    int ret = 0;
+    struct rndis_response *r = s->rndis_resp.tqh_first;
+
+    if (!r)
+        return ret;
+
+    QTAILQ_REMOVE(&s->rndis_resp, r, entries);
+    ret = r->length;
+    memcpy(buf, r->buf, r->length);
+    g_free(r);
+
+    return ret;
+}
+
+static void *rndis_queue_response(USBNetState *s, unsigned int length)
+{
+    struct rndis_response *r =
+            g_malloc0(sizeof(struct rndis_response) + length);
+
+    if (QTAILQ_EMPTY(&s->rndis_resp)) {
+        usb_wakeup(s->intr, 0);
+    }
+
+    QTAILQ_INSERT_TAIL(&s->rndis_resp, r, entries);
+    r->length = length;
+
+    return &r->buf[0];
+}
+
+static void rndis_clear_responsequeue(USBNetState *s)
+{
+    struct rndis_response *r;
+
+    while ((r = s->rndis_resp.tqh_first)) {
+        QTAILQ_REMOVE(&s->rndis_resp, r, entries);
+        g_free(r);
+    }
+}
+
+static int rndis_init_response(USBNetState *s, rndis_init_msg_type *buf)
+{
+    rndis_init_cmplt_type *resp =
+            rndis_queue_response(s, sizeof(rndis_init_cmplt_type));
+
+    if (!resp)
+        return USB_RET_STALL;
+
+    resp->MessageType = cpu_to_le32(RNDIS_INITIALIZE_CMPLT);
+    resp->MessageLength = cpu_to_le32(sizeof(rndis_init_cmplt_type));
+    resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
+    resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
+    resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION);
+    resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION);
+    resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS);
+    resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3);
+    resp->MaxPacketsPerTransfer = cpu_to_le32(1);
+    resp->MaxTransferSize = cpu_to_le32(ETH_FRAME_LEN +
+                    sizeof(struct rndis_packet_msg_type) + 22);
+    resp->PacketAlignmentFactor = cpu_to_le32(0);
+    resp->AFListOffset = cpu_to_le32(0);
+    resp->AFListSize = cpu_to_le32(0);
+    return 0;
+}
+
+static int rndis_query_response(USBNetState *s,
+                rndis_query_msg_type *buf, unsigned int length)
+{
+    rndis_query_cmplt_type *resp;
+    /* oid_supported_list is the largest data reply */
+    uint8_t infobuf[sizeof(oid_supported_list)];
+    uint32_t bufoffs, buflen;
+    int infobuflen;
+    unsigned int resplen;
+
+    bufoffs = le32_to_cpu(buf->InformationBufferOffset) + 8;
+    buflen = le32_to_cpu(buf->InformationBufferLength);
+    if (bufoffs + buflen > length)
+        return USB_RET_STALL;
+
+    infobuflen = ndis_query(s, le32_to_cpu(buf->OID),
+                            bufoffs + (uint8_t *) buf, buflen, infobuf,
+                            sizeof(infobuf));
+    resplen = sizeof(rndis_query_cmplt_type) +
+            ((infobuflen < 0) ? 0 : infobuflen);
+    resp = rndis_queue_response(s, resplen);
+    if (!resp)
+        return USB_RET_STALL;
+
+    resp->MessageType = cpu_to_le32(RNDIS_QUERY_CMPLT);
+    resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
+    resp->MessageLength = cpu_to_le32(resplen);
+
+    if (infobuflen < 0) {
+        /* OID not supported */
+        resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
+        resp->InformationBufferLength = cpu_to_le32(0);
+        resp->InformationBufferOffset = cpu_to_le32(0);
+        return 0;
+    }
+
+    resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
+    resp->InformationBufferOffset =
+            cpu_to_le32(infobuflen ? sizeof(rndis_query_cmplt_type) - 8 : 0);
+    resp->InformationBufferLength = cpu_to_le32(infobuflen);
+    memcpy(resp + 1, infobuf, infobuflen);
+
+    return 0;
+}
+
+static int rndis_set_response(USBNetState *s,
+                rndis_set_msg_type *buf, unsigned int length)
+{
+    rndis_set_cmplt_type *resp =
+            rndis_queue_response(s, sizeof(rndis_set_cmplt_type));
+    uint32_t bufoffs, buflen;
+    int ret;
+
+    if (!resp)
+        return USB_RET_STALL;
+
+    bufoffs = le32_to_cpu(buf->InformationBufferOffset) + 8;
+    buflen = le32_to_cpu(buf->InformationBufferLength);
+    if (bufoffs + buflen > length)
+        return USB_RET_STALL;
+
+    ret = ndis_set(s, le32_to_cpu(buf->OID),
+                    bufoffs + (uint8_t *) buf, buflen);
+    resp->MessageType = cpu_to_le32(RNDIS_SET_CMPLT);
+    resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
+    resp->MessageLength = cpu_to_le32(sizeof(rndis_set_cmplt_type));
+    if (ret < 0) {
+        /* OID not supported */
+        resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
+        return 0;
+    }
+    resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
+
+    return 0;
+}
+
+static int rndis_reset_response(USBNetState *s, rndis_reset_msg_type *buf)
+{
+    rndis_reset_cmplt_type *resp =
+            rndis_queue_response(s, sizeof(rndis_reset_cmplt_type));
+
+    if (!resp)
+        return USB_RET_STALL;
+
+    resp->MessageType = cpu_to_le32(RNDIS_RESET_CMPLT);
+    resp->MessageLength = cpu_to_le32(sizeof(rndis_reset_cmplt_type));
+    resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
+    resp->AddressingReset = cpu_to_le32(1); /* reset information */
+
+    return 0;
+}
+
+static int rndis_keepalive_response(USBNetState *s,
+                rndis_keepalive_msg_type *buf)
+{
+    rndis_keepalive_cmplt_type *resp =
+            rndis_queue_response(s, sizeof(rndis_keepalive_cmplt_type));
+
+    if (!resp)
+        return USB_RET_STALL;
+
+    resp->MessageType = cpu_to_le32(RNDIS_KEEPALIVE_CMPLT);
+    resp->MessageLength = cpu_to_le32(sizeof(rndis_keepalive_cmplt_type));
+    resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
+    resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
+
+    return 0;
+}
+
+/* Prepare to receive the next packet */
+static void usb_net_reset_in_buf(USBNetState *s)
+{
+    s->in_ptr = s->in_len = 0;
+    qemu_flush_queued_packets(qemu_get_queue(s->nic));
+}
+
+static int rndis_parse(USBNetState *s, uint8_t *data, int length)
+{
+    uint32_t msg_type;
+    le32 *tmp = (le32 *) data;
+
+    msg_type = le32_to_cpup(tmp);
+
+    switch (msg_type) {
+    case RNDIS_INITIALIZE_MSG:
+        s->rndis_state = RNDIS_INITIALIZED;
+        return rndis_init_response(s, (rndis_init_msg_type *) data);
+
+    case RNDIS_HALT_MSG:
+        s->rndis_state = RNDIS_UNINITIALIZED;
+        return 0;
+
+    case RNDIS_QUERY_MSG:
+        return rndis_query_response(s, (rndis_query_msg_type *) data, length);
+
+    case RNDIS_SET_MSG:
+        return rndis_set_response(s, (rndis_set_msg_type *) data, length);
+
+    case RNDIS_RESET_MSG:
+        rndis_clear_responsequeue(s);
+        s->out_ptr = 0;
+        usb_net_reset_in_buf(s);
+        return rndis_reset_response(s, (rndis_reset_msg_type *) data);
+
+    case RNDIS_KEEPALIVE_MSG:
+        /* For USB: host does this every 5 seconds */
+        return rndis_keepalive_response(s, (rndis_keepalive_msg_type *) data);
+    }
+
+    return USB_RET_STALL;
+}
+
+static void usb_net_handle_reset(USBDevice *dev)
+{
+}
+
+static void usb_net_handle_control(USBDevice *dev, USBPacket *p,
+               int request, int value, int index, int length, uint8_t *data)
+{
+    USBNetState *s = (USBNetState *) dev;
+    int ret;
+
+    ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
+    if (ret >= 0) {
+        return;
+    }
+
+    switch(request) {
+    case ClassInterfaceOutRequest | USB_CDC_SEND_ENCAPSULATED_COMMAND:
+        if (!is_rndis(s) || value || index != 0) {
+            goto fail;
+        }
+#ifdef TRAFFIC_DEBUG
+        {
+            unsigned int i;
+            fprintf(stderr, "SEND_ENCAPSULATED_COMMAND:");
+            for (i = 0; i < length; i++) {
+                if (!(i & 15))
+                    fprintf(stderr, "\n%04x:", i);
+                fprintf(stderr, " %02x", data[i]);
+            }
+            fprintf(stderr, "\n\n");
+        }
+#endif
+        ret = rndis_parse(s, data, length);
+        if (ret < 0) {
+            p->status = ret;
+        }
+        break;
+
+    case ClassInterfaceRequest | USB_CDC_GET_ENCAPSULATED_RESPONSE:
+        if (!is_rndis(s) || value || index != 0) {
+            goto fail;
+        }
+        p->actual_length = rndis_get_response(s, data);
+        if (p->actual_length == 0) {
+            data[0] = 0;
+            p->actual_length = 1;
+        }
+#ifdef TRAFFIC_DEBUG
+        {
+            unsigned int i;
+            fprintf(stderr, "GET_ENCAPSULATED_RESPONSE:");
+            for (i = 0; i < p->actual_length; i++) {
+                if (!(i & 15))
+                    fprintf(stderr, "\n%04x:", i);
+                fprintf(stderr, " %02x", data[i]);
+            }
+            fprintf(stderr, "\n\n");
+        }
+#endif
+        break;
+
+    default:
+    fail:
+        fprintf(stderr, "usbnet: failed control transaction: "
+                        "request 0x%x value 0x%x index 0x%x length 0x%x\n",
+                        request, value, index, length);
+        p->status = USB_RET_STALL;
+        break;
+    }
+}
+
+static void usb_net_handle_statusin(USBNetState *s, USBPacket *p)
+{
+    le32 buf[2];
+
+    if (p->iov.size < 8) {
+        p->status = USB_RET_STALL;
+        return;
+    }
+
+    buf[0] = cpu_to_le32(1);
+    buf[1] = cpu_to_le32(0);
+    usb_packet_copy(p, buf, 8);
+    if (!s->rndis_resp.tqh_first) {
+        p->status = USB_RET_NAK;
+    }
+
+#ifdef TRAFFIC_DEBUG
+    fprintf(stderr, "usbnet: interrupt poll len %zu return %d",
+            p->iov.size, p->status);
+    iov_hexdump(p->iov.iov, p->iov.niov, stderr, "usbnet", p->status);
+#endif
+}
+
+static void usb_net_handle_datain(USBNetState *s, USBPacket *p)
+{
+    int len;
+
+    if (s->in_ptr > s->in_len) {
+        usb_net_reset_in_buf(s);
+        p->status = USB_RET_NAK;
+        return;
+    }
+    if (!s->in_len) {
+        p->status = USB_RET_NAK;
+        return;
+    }
+    len = s->in_len - s->in_ptr;
+    if (len > p->iov.size) {
+        len = p->iov.size;
+    }
+    usb_packet_copy(p, &s->in_buf[s->in_ptr], len);
+    s->in_ptr += len;
+    if (s->in_ptr >= s->in_len &&
+                    (is_rndis(s) || (s->in_len & (64 - 1)) || !len)) {
+        /* no short packet necessary */
+        usb_net_reset_in_buf(s);
+    }
+
+#ifdef TRAFFIC_DEBUG
+    fprintf(stderr, "usbnet: data in len %zu return %d", p->iov.size, len);
+    iov_hexdump(p->iov.iov, p->iov.niov, stderr, "usbnet", len);
+#endif
+}
+
+static void usb_net_handle_dataout(USBNetState *s, USBPacket *p)
+{
+    int sz = sizeof(s->out_buf) - s->out_ptr;
+    struct rndis_packet_msg_type *msg =
+            (struct rndis_packet_msg_type *) s->out_buf;
+    uint32_t len;
+
+#ifdef TRAFFIC_DEBUG
+    fprintf(stderr, "usbnet: data out len %zu\n", p->iov.size);
+    iov_hexdump(p->iov.iov, p->iov.niov, stderr, "usbnet", p->iov.size);
+#endif
+
+    if (sz > p->iov.size) {
+        sz = p->iov.size;
+    }
+    usb_packet_copy(p, &s->out_buf[s->out_ptr], sz);
+    s->out_ptr += sz;
+
+    if (!is_rndis(s)) {
+        if (p->iov.size < 64) {
+            qemu_send_packet(qemu_get_queue(s->nic), s->out_buf, s->out_ptr);
+            s->out_ptr = 0;
+        }
+        return;
+    }
+    len = le32_to_cpu(msg->MessageLength);
+    if (s->out_ptr < 8 || s->out_ptr < len) {
+        return;
+    }
+    if (le32_to_cpu(msg->MessageType) == RNDIS_PACKET_MSG) {
+        uint32_t offs = 8 + le32_to_cpu(msg->DataOffset);
+        uint32_t size = le32_to_cpu(msg->DataLength);
+        if (offs + size <= len)
+            qemu_send_packet(qemu_get_queue(s->nic), s->out_buf + offs, size);
+    }
+    s->out_ptr -= len;
+    memmove(s->out_buf, &s->out_buf[len], s->out_ptr);
+}
+
+static void usb_net_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBNetState *s = (USBNetState *) dev;
+
+    switch(p->pid) {
+    case USB_TOKEN_IN:
+        switch (p->ep->nr) {
+        case 1:
+            usb_net_handle_statusin(s, p);
+            break;
+
+        case 2:
+            usb_net_handle_datain(s, p);
+            break;
+
+        default:
+            goto fail;
+        }
+        break;
+
+    case USB_TOKEN_OUT:
+        switch (p->ep->nr) {
+        case 2:
+            usb_net_handle_dataout(s, p);
+            break;
+
+        default:
+            goto fail;
+        }
+        break;
+
+    default:
+    fail:
+        p->status = USB_RET_STALL;
+        break;
+    }
+
+    if (p->status == USB_RET_STALL) {
+        fprintf(stderr, "usbnet: failed data transaction: "
+                        "pid 0x%x ep 0x%x len 0x%zx\n",
+                        p->pid, p->ep->nr, p->iov.size);
+    }
+}
+
+static ssize_t usbnet_receive(NetClientState *nc, const uint8_t *buf, size_t size)
+{
+    USBNetState *s = qemu_get_nic_opaque(nc);
+    uint8_t *in_buf = s->in_buf;
+    size_t total_size = size;
+
+    if (!s->dev.config) {
+        return -1;
+    }
+
+    if (is_rndis(s)) {
+        if (s->rndis_state != RNDIS_DATA_INITIALIZED) {
+            return -1;
+        }
+        total_size += sizeof(struct rndis_packet_msg_type);
+    }
+    if (total_size > sizeof(s->in_buf)) {
+        return -1;
+    }
+
+    /* Only accept packet if input buffer is empty */
+    if (s->in_len > 0) {
+        return 0;
+    }
+
+    if (is_rndis(s)) {
+        struct rndis_packet_msg_type *msg;
+
+        msg = (struct rndis_packet_msg_type *)in_buf;
+        memset(msg, 0, sizeof(struct rndis_packet_msg_type));
+        msg->MessageType = cpu_to_le32(RNDIS_PACKET_MSG);
+        msg->MessageLength = cpu_to_le32(size + sizeof(*msg));
+        msg->DataOffset = cpu_to_le32(sizeof(*msg) - 8);
+        msg->DataLength = cpu_to_le32(size);
+        /* msg->OOBDataOffset;
+         * msg->OOBDataLength;
+         * msg->NumOOBDataElements;
+         * msg->PerPacketInfoOffset;
+         * msg->PerPacketInfoLength;
+         * msg->VcHandle;
+         * msg->Reserved;
+         */
+        in_buf += sizeof(*msg);
+    }
+
+    memcpy(in_buf, buf, size);
+    s->in_len = total_size;
+    s->in_ptr = 0;
+    return size;
+}
+
+static void usbnet_cleanup(NetClientState *nc)
+{
+    USBNetState *s = qemu_get_nic_opaque(nc);
+
+    s->nic = NULL;
+}
+
+static void usb_net_handle_destroy(USBDevice *dev)
+{
+    USBNetState *s = (USBNetState *) dev;
+
+    /* TODO: remove the nd_table[] entry */
+    rndis_clear_responsequeue(s);
+    qemu_del_nic(s->nic);
+}
+
+static NetClientInfo net_usbnet_info = {
+    .type = NET_CLIENT_OPTIONS_KIND_NIC,
+    .size = sizeof(NICState),
+    .receive = usbnet_receive,
+    .cleanup = usbnet_cleanup,
+};
+
+static void usb_net_realize(USBDevice *dev, Error **errrp)
+{
+    USBNetState *s = USB_NET(dev);
+
+    usb_desc_create_serial(dev);
+    usb_desc_init(dev);
+
+    s->rndis_state = RNDIS_UNINITIALIZED;
+    QTAILQ_INIT(&s->rndis_resp);
+
+    s->medium = 0;	/* NDIS_MEDIUM_802_3 */
+    s->speed = 1000000; /* 100MBps, in 100Bps units */
+    s->media_state = 0;	/* NDIS_MEDIA_STATE_CONNECTED */;
+    s->filter = 0;
+    s->vendorid = 0x1234;
+    s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
+
+    qemu_macaddr_default_if_unset(&s->conf.macaddr);
+    s->nic = qemu_new_nic(&net_usbnet_info, &s->conf,
+                          object_get_typename(OBJECT(s)), s->dev.qdev.id, s);
+    qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
+    snprintf(s->usbstring_mac, sizeof(s->usbstring_mac),
+             "%02x%02x%02x%02x%02x%02x",
+             0x40,
+             s->conf.macaddr.a[1],
+             s->conf.macaddr.a[2],
+             s->conf.macaddr.a[3],
+             s->conf.macaddr.a[4],
+             s->conf.macaddr.a[5]);
+    usb_desc_set_string(dev, STRING_ETHADDR, s->usbstring_mac);
+}
+
+static void usb_net_instance_init(Object *obj)
+{
+    USBDevice *dev = USB_DEVICE(obj);
+    USBNetState *s = USB_NET(dev);
+
+    device_add_bootindex_property(obj, &s->conf.bootindex,
+                                  "bootindex", "/ethernet-phy@0",
+                                  &dev->qdev, NULL);
+}
+
+static USBDevice *usb_net_init(USBBus *bus, const char *cmdline)
+{
+    Error *local_err = NULL;
+    USBDevice *dev;
+    QemuOpts *opts;
+    int idx;
+
+    opts = qemu_opts_parse_noisily(qemu_find_opts("net"), cmdline, false);
+    if (!opts) {
+        return NULL;
+    }
+    qemu_opt_set(opts, "type", "nic", &error_abort);
+    qemu_opt_set(opts, "model", "usb", &error_abort);
+
+    idx = net_client_init(opts, 0, &local_err);
+    if (local_err) {
+        error_report_err(local_err);
+        return NULL;
+    }
+
+    dev = usb_create(bus, "usb-net");
+    qdev_set_nic_properties(&dev->qdev, &nd_table[idx]);
+    return dev;
+}
+
+static const VMStateDescription vmstate_usb_net = {
+    .name = "usb-net",
+    .unmigratable = 1,
+};
+
+static Property net_properties[] = {
+    DEFINE_NIC_PROPERTIES(USBNetState, conf),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void usb_net_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->realize        = usb_net_realize;
+    uc->product_desc   = "QEMU USB Network Interface";
+    uc->usb_desc       = &desc_net;
+    uc->handle_reset   = usb_net_handle_reset;
+    uc->handle_control = usb_net_handle_control;
+    uc->handle_data    = usb_net_handle_data;
+    uc->handle_destroy = usb_net_handle_destroy;
+    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
+    dc->fw_name = "network";
+    dc->vmsd = &vmstate_usb_net;
+    dc->props = net_properties;
+}
+
+static const TypeInfo net_info = {
+    .name          = TYPE_USB_NET,
+    .parent        = TYPE_USB_DEVICE,
+    .instance_size = sizeof(USBNetState),
+    .class_init    = usb_net_class_initfn,
+    .instance_init = usb_net_instance_init,
+};
+
+static void usb_net_register_types(void)
+{
+    type_register_static(&net_info);
+    usb_legacy_register(TYPE_USB_NET, "net", usb_net_init);
+}
+
+type_init(usb_net_register_types)