Hi, I'm trying to send UDP packets from the kernel using sock_sendmsg(), but it is possible for this to eventually call schedule(). The part of the kernel I am working in expects to be executed atomically, so calling sock_sendmsg() usually generates the error: "BUG: scheduling while atomic". Is there any way to call sock_sendmsg() such that it executes atomically (i.e., doesn't relinquish the CPU to the scheduler)? It is not necessary to wait until the transmission is complete, and setting the flag MSG_DONTWAIT does not solve this issue. I tried looking for where the network stack returns -EIOCBQUEUED and got as far as udp_sendmsg(), but it then becomes difficult to follow the execution path (there's four goto labels in this function). Any help would be appreciated.
Thanks, Michael Griepentrog -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
