>> It isn't clear to me though why the Linux userspace mode does not behave >> the same way though. I had a (very) brief look at the way PF_PACKET is >> handled in Linux and it seemed like the packet would still be passed up >> the stack -- there must be something else that I'm missing. > > Linux appears to have a special case such that a packet will never be > delivered back to the socket from which it originates via the network > tap interface, see dev_queue_xmit_nit() in net/core/dev.c:
That looks to me like it should address the transmit case, avoiding duplicate handling of a packet transmitted by Open vSwitch - I don't see how the receive case (from the physical network) is handled. -Ed _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
