On Thu, Dec 4, 2014 at 1:26 AM, Thomas Graf <tg...@suug.ch> wrote: > On 12/03/14 at 05:51pm, Jesse Gross wrote: >> I think it depends on where you put the PMTU check. If routing is >> happening in OVS where it is decomposed in several discrete actions >> like set MAC and decrement TTL then perhaps there is another explicit >> action to check the MTU. If it is happening in the context of the IP >> stack, then ICMP generation occurs automatically and if you get that >> if you write a flow to send a packet there. In each case, it seems >> like a flow would be steering you by way of an action to do routing so >> you would have fine grained control. I don't see this as conflicting >> with L3 ACLs in an L2 context in the same way that you don't have to >> automatically decrement the TTL. > > OK, I was under the impression that you would detect L3 behaviour > desire in OVS without an explicit action. Hence the worry on wrong > classification for L3 ACLs. > > Whether we mark the packet and defer the MTU check or we check right > in the action is an implementation detail in the end. I think we > agree on concept level that we need an API to control behaviour.
Yes, I agree. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
