On Jun 26, 2006, at 13:26, Bizhan Gholikhamseh ((bgholikh)) wrote: > Hi ALL, > We have developed a custom board mother board based on > MPC8541 processor running Linux 2.6.11. > > In our system, most of the ingress UDP packets are retransmitted > with one modification to data portion of the packet (one byte). As you > see there are many copy overhead due to copy from system to userland > and vise versa which has impacted our system performance. > > Is there a zero-copy support for TSEC > to eliminate the buffer copy from kernel to userland and vise versa?
I'm not sure there's any way, at present, in Linux to avoid the user/ kernel copying. You might want to ask on the netdev at vger.kernel.org list, though. Andy
