Hello, I am porting three device drivers to linux. One function is that for every received packet, the device driver sends a message to notify the applications for processing. But I could not do it in linux, IPC seems not designed for linux kernel. This is a very basic feature for device driver to communicate applications via messages, I am sure there must be some way in linux where the kernel can talk to user mode applications via messages or similar alternative mechanism (not signal). Any advices or sample codes will be much appreciated. Thank you. Jim - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html