1 files changed, 38 insertions, 0 deletions
diff --git a/src/include/ipxe/cdc.h b/src/include/ipxe/cdc.h
new file mode 100644
index 00000000..2eec598a
--- /dev/null
+++ b/src/include/ipxe/cdc.h
@@ -0,0 +1,38 @@
+#ifndef _IPXE_CDC_H
+#define _IPXE_CDC_H
+
+/** @file
+ *
+ * USB Communications Device Class (CDC)
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/usb.h>
+
+/** Class code for communications devices */
+#define USB_CLASS_CDC 2
+
+/** Ethernet descriptor subtype */
+#define CDC_SUBTYPE_ETHERNET 15
+
+/** Network connection notification */
+#define CDC_NETWORK_CONNECTION						\
+	( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE |		\
+	  USB_REQUEST_TYPE ( 0x00 ) )
+
+/** Connection speed change notification */
+#define CDC_CONNECTION_SPEED_CHANGE					\
+	( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE |		\
+	  USB_REQUEST_TYPE ( 0x2a ) )
+
+/** Connection speed change notification */
+struct cdc_connection_speed_change {
+	/** Downlink bit rate, in bits per second */
+	uint32_t down;
+	/** Uplink bit rate, in bits per second */
+	uint32_t up;
+} __attribute__ (( packed ));
+
+#endif /* _IPXE_CDC_H */