Lines Matching full:front

171  * Determine how much data the front end can currently accept.  This function
172  * returns the number of bytes the front end can accept.  If it returns 0, the
173  * front end cannot receive data at the moment.  The function must be polled
176  * Returns: the number of bytes the front end can receive via @qemu_chr_be_write
182  * @buf: a buffer to receive data from the front end
183  * @len: the number of bytes to receive from the front end
185  * Write data from the back end to the front end.  Before issuing this call,
187  * the front end can currently accept.
193  * @buf: a buffer to receive data from the front end
194  * @len: the number of bytes to receive from the front end
213  * Send an event from the back end to the front end.
269      * Read from the backend (blocking). A typical front-end will instead rely