1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * USB CDC common helpers
4  *
5  * Copyright (c) 2015 Oliver Neukum <oneukum@suse.com>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * version 2 as published by the Free Software Foundation.
10  */
11 #ifndef __LINUX_USB_CDC_H
12 #define __LINUX_USB_CDC_H
13 
14 #include <uapi/linux/usb/cdc.h>
15 
16 /*
17  * inofficial magic numbers
18  */
19 
20 #define CDC_PHONET_MAGIC_NUMBER		0xAB
21 
22 /*
23  * parsing CDC headers
24  */
25 
26 struct usb_cdc_parsed_header {
27 	struct usb_cdc_union_desc *usb_cdc_union_desc;
28 	struct usb_cdc_header_desc *usb_cdc_header_desc;
29 
30 	struct usb_cdc_call_mgmt_descriptor *usb_cdc_call_mgmt_descriptor;
31 	struct usb_cdc_acm_descriptor *usb_cdc_acm_descriptor;
32 	struct usb_cdc_country_functional_desc *usb_cdc_country_functional_desc;
33 	struct usb_cdc_network_terminal_desc *usb_cdc_network_terminal_desc;
34 	struct usb_cdc_ether_desc *usb_cdc_ether_desc;
35 	struct usb_cdc_dmm_desc *usb_cdc_dmm_desc;
36 	struct usb_cdc_mdlm_desc *usb_cdc_mdlm_desc;
37 	struct usb_cdc_mdlm_detail_desc *usb_cdc_mdlm_detail_desc;
38 	struct usb_cdc_obex_desc *usb_cdc_obex_desc;
39 	struct usb_cdc_ncm_desc *usb_cdc_ncm_desc;
40 	struct usb_cdc_mbim_desc *usb_cdc_mbim_desc;
41 	struct usb_cdc_mbim_extended_desc *usb_cdc_mbim_extended_desc;
42 
43 	bool phonet_magic_present;
44 };
45 
46 struct usb_interface;
47 int cdc_parse_cdc_header(struct usb_cdc_parsed_header *hdr,
48 				struct usb_interface *intf,
49 				u8 *buffer,
50 				int buflen);
51 
52 #endif /* __LINUX_USB_CDC_H */
53