On Sat, Oct 27, 2012 at 03:05:57PM +0900, Simon Horman wrote: > There are (or at least will be) cases where this check can produce false > positives. For example, a flow which matches a non-MPLS packet and then > applies an MPLS push action followed by an action to load the MPLS label.
So, I remember the discussion, but I don't remember coming to exactly this conclusion. The problem seems to be, at this point, MPLS specific, because for most prerequisites, whether it is satisfied cannot be affected by actions. For example, no action can transform a TCP packet into a non-TCP packet, and vice versa. My thought is, then, for now we should define a new function to test whether a prerequisite could ever be satisfied given a particular flow. For all prerequisites other than MPLS, this would return the same thing as mf_are_prereqs_ok(); for MPLS, it could just return true. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
