xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

CDC: common parser for extra headers

Browse Source 
CDC drivers all implement their own parser for the extra headers.
This patch fixes the code duplication introducing a single common
parser in usbnet.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Neukum
2015-09-07 16:05:38 +02:00
committed by David S. Miller
parent 1d147ccbfc
commit c40a2c8817
2 changed files with 185 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
include/linux/usb/cdc.h Normal file
View File

@@ -0,0 +1,47 @@
/*
* USB CDC common helpers
*
* Copyright (c) 2015 Oliver Neukum <oneukum@suse.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*/
#include <uapi/linux/usb/cdc.h>
/*
* inofficial magic numbers
*/
#define CDC_PHONET_MAGIC_NUMBER 0xAB
/*
* parsing CDC headers
*/
struct usb_cdc_parsed_header {
struct usb_cdc_union_desc *usb_cdc_union_desc;
struct usb_cdc_header_desc *usb_cdc_header_desc;
struct usb_cdc_call_mgmt_descriptor *usb_cdc_call_mgmt_descriptor;
struct usb_cdc_acm_descriptor *usb_cdc_acm_descriptor;
struct usb_cdc_country_functional_desc *usb_cdc_country_functional_desc;
struct usb_cdc_network_terminal_desc *usb_cdc_network_terminal_desc;
struct usb_cdc_ether_desc *usb_cdc_ether_desc;
struct usb_cdc_dmm_desc *usb_cdc_dmm_desc;
struct usb_cdc_mdlm_desc *usb_cdc_mdlm_desc;
struct usb_cdc_mdlm_detail_desc *usb_cdc_mdlm_detail_desc;
struct usb_cdc_obex_desc *usb_cdc_obex_desc;
struct usb_cdc_ncm_desc *usb_cdc_ncm_desc;
struct usb_cdc_mbim_desc *usb_cdc_mbim_desc;
struct usb_cdc_mbim_extended_desc *usb_cdc_mbim_extended_desc;
bool phonet_magic_present;
};
int cdc_parse_cdc_header(struct usb_cdc_parsed_header *hdr,
struct usb_interface *intf,
u8 *buffer,
int buflen);