added isochronous modus

internal/usb/device.go

@@ -24,13 +24,29 @@ type Device struct {
 
 // Interface represents a USB interface
 type Interface struct {
-	Number    uint8  `json:"number"`
-	Class     uint8  `json:"class"`
-	SubClass  uint8  `json:"sub_class"`
-	Protocol  uint8  `json:"protocol"`
-	Driver    string `json:"driver"`
+	Number    uint8      `json:"number"`
+	Class     uint8      `json:"class"`
+	SubClass  uint8      `json:"sub_class"`
+	Protocol  uint8      `json:"protocol"`
+	Driver    string     `json:"driver"`
+	Endpoints []Endpoint `json:"endpoints"`
 }
 
+// Endpoint represents a USB endpoint
+type Endpoint struct {
+	Address       uint8  `json:"address"`        // bEndpointAddress (bit 7=direction, bits 3:0=number)
+	TransferType  uint8  `json:"transfer_type"`  // 0=control, 1=iso, 2=bulk, 3=interrupt
+	MaxPacketSize uint16 `json:"max_packet_size"`
+}
+
+// USB transfer types (from bmAttributes)
+const (
+	TransferTypeControl     = 0
+	TransferTypeIsochronous = 1
+	TransferTypeBulk        = 2
+	TransferTypeInterrupt   = 3
+)
+
 // DevID returns the USB/IP device ID (busnum << 16 | devnum)
 func (d *Device) DevID() uint32 {
 	return (d.BusNum << 16) | d.DevNum