On Feb 13, 2009, at 2:15 PM, Sebastien Roy wrote: > On Fri, 2009-02-13 at 14:34 -0500, James Carlson wrote: >> Nicolas Droux writes: >>> I have included below a proposal which would allow bridging to >>> cleanly integrate with mac without the introduction of special >>> cases in the common data-path, and enabling bridging to >>> leverage the layer-2 classification that was introduced >>> by Crossbow. The proposal takes into account the issues we >>> discussed earlier in this thread. >> >> Thanks. I think the high-level issue here is deciding on a way >> forward, much of which is probably outside of the architectural >> review >> realm. > > What is architecturally relevant, I think, is the feature intersection > of administratively-defined flows (and the things that come with them > like resource management and accounting) and bridging. For example, > giving the administrator the ability to do flow accounting on a > bridged > link is conceivable. From a high-level administrative view, it's > something that I might expect would just work given the tools given to > me (dladm and flowadm) unless documented otherwise.
Yes, I don't think there are any issues here. > To me, this case is complete as-is as long as we understand and > document > where such features don't interact. If the architecture of this case > were incompatible with future work aimed at improving such feature > interaction, then I'd feel differently, but I don't see that this is > true. > > If we can agree that such work is indeed in the realm of a future > project, then I'd suggest including advice to that effect to the > project's management in the opinion for this case. I agree with that approach. For the short term we will look into providing a mechanism that will allow subsystems like bridging and layer-2 filtering to intercept packets without requiring the addition of checks specific to these subsystems in the common mac TX and RX data-paths. Nicolas. -- Nicolas Droux - Solaris Kernel Networking - Sun Microsystems, Inc. droux at sun.com - http://blogs.sun.com/droux
