Hi Jan, On Thu, Aug 11, 2016 at 12:58:44PM +0000, Jan Scheurich wrote: > Hi Simon > > > > The implicit push_eth action introduced by Simon in his L3 tunnel port > > > patch mainly ensures the presence of the 14 byte MAC header on ports > > > where this is a must for syntactic interpretation of the packet. It > > > did not worry about if the resulting packet was semantically useful or > > > not. > > > > In the context of my patchset it is possible to set the MAC addresses (to > > something non-zero) using a set-field (or similar) action. Is that > > facility of use here? > > I don't understand how this can work. The implicit push_eth action is > inserted just before sending an L3 packet to an L2 port by means of an output > action. How can the OF controller modify the newly inserted SMAC and DMAC > fields with set_field actions after the output action?
I can double check and possibly its conceptually a bit broken but at least in the context of the l3 VPN patchset I believe you can set the ethernet fields (e.g. just before output) even though the packet has no ethernet header at that point. Given the way translation works in ovs-vswtichd this makes some sense. From an OpenFlow point of view perhaps less so. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
