/* * 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/osdep.h" #include "qapi/error.h" #include "hw/qdev-properties.h" #include "hw/usb.h" #include "migration/vmstate.h" #include "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" #include "qemu/module.h" #include "qemu/cutils.h" #include "qom/object.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 USB_CDC_NETWORK_CONNECTION 0x00 #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; }; /* 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[]; }; 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; uint16_t connection; unsigned int out_ptr; uint8_t out_buf[2048]; unsigned int in_ptr, in_len; uint8_t in_buf[2048]; USBEndpoint *intr; USBEndpoint *bulk_in; char usbstring_mac[13]; NICState *nic; NICConf conf; QTAILQ_HEAD(, rndis_response) rndis_resp; }; #define TYPE_USB_NET "usb-net" OBJECT_DECLARE_SIMPLE_TYPE(USBNetState, USB_NET) static int is_rndis(USBNetState *s) { return s->dev.config ? s->dev.config->bConfigurationValue == DEV_RNDIS_CONFIG_VALUE : 0; } 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++) { stl_le_p(outbuf + (i * sizeof(le32)), oid_supported_list[i]); } return sizeof(oid_supported_list); /* mandatory */ case OID_GEN_HARDWARE_STATUS: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_GEN_MEDIA_SUPPORTED: stl_le_p(outbuf, s->medium); return sizeof(le32); /* mandatory */ case OID_GEN_MEDIA_IN_USE: stl_le_p(outbuf, s->medium); return sizeof(le32); /* mandatory */ case OID_GEN_MAXIMUM_FRAME_SIZE: stl_le_p(outbuf, ETH_FRAME_LEN); return sizeof(le32); /* mandatory */ case OID_GEN_LINK_SPEED: stl_le_p(outbuf, s->speed); return sizeof(le32); /* mandatory */ case OID_GEN_TRANSMIT_BLOCK_SIZE: stl_le_p(outbuf, ETH_FRAME_LEN); return sizeof(le32); /* mandatory */ case OID_GEN_RECEIVE_BLOCK_SIZE: stl_le_p(outbuf, ETH_FRAME_LEN); return sizeof(le32); /* mandatory */ case OID_GEN_VENDOR_ID: stl_le_p(outbuf, 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: stl_le_p(outbuf, 1); return sizeof(le32); /* mandatory */ case OID_GEN_CURRENT_PACKET_FILTER: stl_le_p(outbuf, s->filter); return sizeof(le32); /* mandatory */ case OID_GEN_MAXIMUM_TOTAL_SIZE: stl_le_p(outbuf, RNDIS_MAX_TOTAL_SIZE); return sizeof(le32); /* mandatory */ case OID_GEN_MEDIA_CONNECT_STATUS: stl_le_p(outbuf, s->media_state); return sizeof(le32); case OID_GEN_PHYSICAL_MEDIUM: stl_le_p(outbuf, 0); return sizeof(le32); case OID_GEN_MAC_OPTIONS: stl_le_p(outbuf, NDIS_MAC_OPTION_RECEIVE_SERIALIZED | NDIS_MAC_OPTION_FULL_DUPLEX); return sizeof(le32); /* statistics OIDs (table 4-2) */ /* mandatory */ case OID_GEN_XMIT_OK: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_GEN_RCV_OK: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_GEN_XMIT_ERROR: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_GEN_RCV_ERROR: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_GEN_RCV_NO_BUFFER: stl_le_p(outbuf, 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: stl_le_p(outbuf, 0xe0000000); return sizeof(le32); /* mandatory */ case OID_802_3_MAXIMUM_LIST_SIZE: stl_le_p(outbuf, 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: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_802_3_XMIT_ONE_COLLISION: stl_le_p(outbuf, 0); return sizeof(le32); /* mandatory */ case OID_802_3_XMIT_MORE_COLLISIONS: stl_le_p(outbuf, 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 = ldl_le_p(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 (buflen > length || bufoffs >= length || 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 (buflen > length || bufoffs >= length || 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 = ldl_le_p(data); 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; case ClassInterfaceOutRequest | USB_CDC_SET_ETHERNET_PACKET_FILTER: if (is_rndis(s)) { goto fail; } 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 rbuf[2]; uint16_t ebuf[4]; if (p->iov.size < 8) { p->status = USB_RET_STALL; return; } if (is_rndis(s)) { rbuf[0] = cpu_to_le32(1); rbuf[1] = cpu_to_le32(0); usb_packet_copy(p, rbuf, 8); if (!s->rndis_resp.tqh_first) { p->status = USB_RET_NAK; } } else { ebuf[0] = cpu_to_be16(ClassInterfaceRequest | USB_CDC_NETWORK_CONNECTION); ebuf[1] = cpu_to_le16(s->connection); ebuf[2] = cpu_to_le16(1); ebuf[3] = cpu_to_le16(0); usb_packet_copy(p, ebuf, 8); } #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 || p->iov.size == 0) { 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 < len && size < len && 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; usb_wakeup(s->bulk_in, 0); return size; } static void usbnet_cleanup(NetClientState *nc) { USBNetState *s = qemu_get_nic_opaque(nc); s->nic = NULL; } static void usb_net_unrealize(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_DRIVER_NIC, .size = sizeof(NICState), .receive = usbnet_receive, .cleanup = usbnet_cleanup, }; static void usb_net_realize(USBDevice *dev, Error **errp) { 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->connection = 1; /* Connected */ s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1); s->bulk_in = usb_ep_get(dev, USB_TOKEN_IN, 2); 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->dev.qdev.mem_reentrancy_guard, 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); } static const VMStateDescription vmstate_usb_net = { .name = "usb-net", .unmigratable = 1, }; static const 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->unrealize = usb_net_unrealize; set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); dc->fw_name = "network"; dc->vmsd = &vmstate_usb_net; device_class_set_props(dc, 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); } type_init(usb_net_register_types)