hi again, > > size = sock_recvmsg(kthread->sock,&msg,len,0); > > try to pass MSG_DONTWAIT as flag/last parameter (defined in > linux/socket.h) so it becomes non blocking read operation. maybe this > won't solve your problem, but at least it can check whether you > actually receive the packet or not. i've tried to do that, the problem is that witho non-blocking IO i must sleep after the sock_recvmsg() function. my thought is performance will be limited in that case, it's correct? > > BTW, how big is "len"? in my example it works fine with 1024 (the exact size of the struct copied in the udp data field). > IIRC, in 2.6.x, you should use provided kthread helper function. take a > look on linux/kthread.h inside kernel tree. Basically, it uses > completion to "signal" a thread that it is allowed to finish. > i can't understand the use of functions from the linux/kthread.h file, neither of them can wake a thread... any help? thanks a lot, toni > As always, somebody please CMIIW > > regards > > Mulyadi > > -- toni <agar9938@xxxxxxxxxxxxxxxxxx> -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
