On Friday, April 27, 2012 3:56:06 am Sebastian Huber wrote: > Hi, > > in syncache_socket() in tcp_syncache.c the global variable thread0 is used to > do a in6_pcbconnect() with the ucread of thread0. Why is the thread0 used > here > and not the one of the current thread?
The current thread is generally not all that interesting in this case. Note that this is used for building a socket that will be returned by accept(), not due to a call to connect(), so the only credential establishing this connection would be the user on the remote machine that opened the connection. The current thread for this call is typically an interrupt thread of some sort, but it can also be a netisr thread, or a device driver taskqueue thread, etc. thread0 gives a stable credential to use for creating accepted connections. -- John Baldwin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
