2015-02-27 17:14+0100, Vitaly Kuznetsov: > Re-implement the communication using misc char device. Use ioctl to do > kernel/userspace version negotiation (doesn't make much sense at this moment > as we're breaking backwards compatibility but can be used in future). The main question is whether we want to abolish backward compatibility; kernel rules are usually against breakages and it's hard to prove that the bundled daemon is a sole user and gets updated at the same time. (Note: I'd gladly break anything.) The ioctl is used too creatively for my liking: as an out-of-band communication that is required after the main channel has been opened. It would be simpler to inject the version into first x bytes of the stream, making a read() after open() mandatory. (I've only done a high level overview so far.) _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
