On Wed, Apr 30, 2008 at 10:33:13AM +0800, ?????? wrote: > I'm confused when I read the kernel's ppp implement. in > Ppp_generic.c,the function ppp_create_interface register the > net_device , but I can't find out whereis the rx interrupt handler. So > how the net device interface such as ppp0 deal with received packets? I'm not sure exactly what you mean. I think you want to know how the received packets find their way from the tty to the network interface ppp0. ppp_async.c ppp_asynctty_receive() occurs when bytes are received from the tty. This wakes the tasklet ppp_async_process(). The tasklet calls ppp_input() for each packet. Eventually, ppp_input() calls ppp_receive_nonmp_frame() which removes the encapsulation and calls netif_rx() ... after that the packet will appear in ppp0 as received. "rx interrupt handler" ... might be better thought of as the tty receive handler, which cascades through ppp_async.c into ppp_generic.c -- James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
