fixed hid devices attach

internal/usbip/server.go

@@ -408,30 +408,21 @@ func (s *Server) handleCmdSubmit(r io.Reader, hdr *URBHeader, retChan chan<- []b
 			}
 
 		case bmRequestType == 0x00 && bRequest == 0x09:
-			// SET_CONFIGURATION — the device resets all endpoint data toggles
-			// to DATA0 on SET_CONFIGURATION, but USBDEVFS_CONTROL doesn't update
-			// the host controller's toggle state. We must manually reset host-side
-			// toggles via USBDEVFS_RESETEP, otherwise data toggle mismatch causes
-			// all non-control transfers (bulk, interrupt) to fail silently.
-			buf := transferBuf
-			if buf == nil {
-				buf = make([]byte, 0)
-			}
-			_, err := s.handle.ControlTransfer(bmRequestType, bRequest, wValue, wIndex, 0, 5000, buf)
-			if err != nil {
-				log.Printf("[usbip-server] SET_CONFIGURATION(%d) failed: %v", wValue, err)
-				status = -32
-			} else {
-				log.Printf("[usbip-server] SET_CONFIGURATION(%d) OK, resetting endpoint toggles", wValue)
-				for epNum := range s.epTypes {
-					if epNum == 0 {
-						continue
-					}
-					// Reset both OUT and IN directions; ignore errors for
-					// non-existent directions (e.g. endpoint only has IN)
-					s.handle.ResetEndpoint(uint32(epNum))
-					s.handle.ResetEndpoint(uint32(epNum) | 0x80)
+			// SET_CONFIGURATION — do NOT forward to the physical device.
+			// The device is already configured (we claimed interfaces during Attach).
+			// Sending SET_CONFIGURATION via raw USBDEVFS_CONTROL would reset the
+			// device's endpoint state without updating the kernel's internal USB
+			// subsystem, breaking all subsequent SETINTERFACE and SUBMITURB calls
+			// (ESRCH / EHOSTUNREACH).
+			// Just reset host-side data toggles to DATA0 (matching the fresh VHCI
+			// state on the use-side) and return success.
+			log.Printf("[usbip-server] SET_CONFIGURATION(%d) intercepted (device already configured), resetting endpoint toggles", wValue)
+			for epNum := range s.epTypes {
+				if epNum == 0 {
+					continue
 				}
+				s.handle.ResetEndpoint(uint32(epNum))
+				s.handle.ResetEndpoint(uint32(epNum) | 0x80)
 			}
 
 		default: