Name

struct usb_host_endpoint — host-side endpoint descriptor and queue

Synopsis

struct usb_host_endpoint {
  struct usb_endpoint_descriptor desc;
  struct list_head urb_list;
  void * hcpriv;
  struct ep_device * ep_dev;
  unsigned char * extra;
  int extralen;
};  

Members

desc

descriptor for this endpoint, wMaxPacketSize in native byteorder

urb_list

urbs queued to this endpoint; maintained by usbcore

hcpriv

for use by HCD; typically holds hardware dma queue head (QH) with one or more transfer descriptors (TDs) per urb

ep_dev

ep_device for sysfs info

extra

descriptors following this endpoint in the configuration

extralen

how many bytes of “extra” are valid

Description

USB requests are always queued to a given endpoint, identified by a descriptor within an active interface in a given USB configuration.