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/*
 * USB Communications Device Class (CDC) definitions
 *
 * CDC says how to talk to lots of different types of network adapters,
 * notably ethernet adapters and various modems.  It's used mostly with
 * firmware based USB peripherals.
 */

#ifndef __UAPI_LINUX_USB_CDC_H
#define __UAPI_LINUX_USB_CDC_H

#include <linux/types.h>

#define USB_CDC_SUBCLASS_ACM			0x02
#define USB_CDC_SUBCLASS_ETHERNET		0x06
#define USB_CDC_SUBCLASS_WHCM			0x08
#define USB_CDC_SUBCLASS_DMM			0x09
#define USB_CDC_SUBCLASS_MDLM			0x0a
#define USB_CDC_SUBCLASS_OBEX			0x0b
#define USB_CDC_SUBCLASS_EEM			0x0c
#define USB_CDC_SUBCLASS_NCM			0x0d
#define USB_CDC_SUBCLASS_MBIM			0x0e

#define USB_CDC_PROTO_NONE			0

#define USB_CDC_ACM_PROTO_AT_V25TER		1
#define USB_CDC_ACM_PROTO_AT_PCCA101		2
#define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE	3
#define USB_CDC_ACM_PROTO_AT_GSM		4
#define USB_CDC_ACM_PROTO_AT_3G			5
#define USB_CDC_ACM_PROTO_AT_CDMA		6
#define USB_CDC_ACM_PROTO_VENDOR		0xff

#define USB_CDC_PROTO_EEM			7

#define USB_CDC_NCM_PROTO_NTB			1
#define USB_CDC_MBIM_PROTO_NTB			2

/*-------------------------------------------------------------------------*/

/*
 * Class-Specific descriptors ... there are a couple dozen of them
 */

#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_COUNTRY_TYPE		0x07
#define USB_CDC_NETWORK_TERMINAL_TYPE	0x0a	/* network_terminal_desc */
#define USB_CDC_ETHERNET_TYPE		0x0f	/* ether_desc */
#define USB_CDC_WHCM_TYPE		0x11
#define USB_CDC_MDLM_TYPE		0x12	/* mdlm_desc */
#define USB_CDC_MDLM_DETAIL_TYPE	0x13	/* mdlm_detail_desc */
#define USB_CDC_DMM_TYPE		0x14
#define USB_CDC_OBEX_TYPE		0x15
#define USB_CDC_NCM_TYPE		0x1a
#define USB_CDC_MBIM_TYPE		0x1b
#define USB_CDC_MBIM_EXTENDED_TYPE	0x1c

/* "Header Functional Descriptor" from CDC spec  5.2.3.1 */
struct usb_cdc_header_desc {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__le16	bcdCDC;
} __attribute__ ((packed));

/* "Call Management Descriptor" from CDC spec  5.2.3.2 */
struct usb_cdc_call_mgmt_descriptor {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__u8	bmCapabilities;
#define USB_CDC_CALL_MGMT_CAP_CALL_MGMT		0x01
#define USB_CDC_CALL_MGMT_CAP_DATA_INTF		0x02

	__u8	bDataInterface;
} __attribute__ ((packed));

/* "Abstract Control Management Descriptor" from CDC spec  5.2.3.3 */
struct usb_cdc_acm_descriptor {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__u8	bmCapabilities;
} __attribute__ ((packed));

/* capabilities from 5.2.3.3 */

#define USB_CDC_COMM_FEATURE	0x01
#define USB_CDC_CAP_LINE	0x02
#define USB_CDC_CAP_BRK		0x04
#define USB_CDC_CAP_NOTIFY	0x08

/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
struct usb_cdc_union_desc {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__u8	bMasterInterface0;
	__u8	bSlaveInterface0;
	/* ... and there could be other slave interfaces */
} __attribute__ ((packed));

/* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */
struct usb_cdc_country_functional_desc {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__u8	iCountryCodeRelDate;
	__le16	wCountyCode0;
	/* ... and there can be a lot of country codes */
} __attribute__ ((packed));

/* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */
struct usb_cdc_network_terminal_desc {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8	bDescriptorSubType;

	__u8	bEntityId;
	__u8	iName;
	__u8	bChannelIndex;
	__u8	bPhysicalInterface;
} __attribute__ ((packed));

/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
struct usb_cdc_ether_desc {
	__u8	bLength;
	__u8	bDescriptorType;
	__u8