CDC_PARSE_CDC_HEADER(9)                   USB Core APIs                   CDC_PARSE_CDC_HEADER(9)



NAME
       cdc_parse_cdc_header - parse the extra headers present in CDC devices

SYNOPSIS
       int cdc_parse_cdc_header(struct usb_cdc_parsed_header * hdr, struct usb_interface * intf,
                                u8 * buffer, int buflen);

ARGUMENTS
       hdr
           the place to put the results of the parsing

       intf
           the interface for which parsing is requested

       buffer
           pointer to the extra headers to be parsed

       buflen
           length of the extra headers

DESCRIPTION
       This evaluates the extra headers present in CDC devices which bind the interfaces for data
       and control and provide details about the capabilities of the device.

RETURN
       number of descriptors parsed or -EINVAL if the header is contradictory beyond salvage

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   CDC_PARSE_CDC_HEADER(9)