Hello,
I am working on a device driver which need notify user mode application
to process incoming data or events.
I know signal can be used between kernel and user mode, but it has many
limitations. After all, signal is not a good mechanism for communication.
My preference is to use IPC message between driver and user mode, but I
was told that the IPC message is only for user mode in Linux, kernel
does not support IPC message. Is it true? I've looked some device driver
source code in Linux, seems some of them do use some complicated message
structure. I am not sure those are available for kernel - user
communication or only for kernel communication.
Notification is a very common feature in network device drivers for
kernel and user communication, what are the common and effective
mechanisms used in Linux?
Thank you.
Jim
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