On Fri, May 20, 2016 at 12:15:10PM +0900, Ryota Ozaki wrote: > > Mbufs are slightly different. They can be queued on an interface for a > > moderately long time. For this purpose, a "flush" hook would definitely > > be needed. I think having such a hook would be useful for other purposes > > as well, i.e. to trigger memory compaction. But it is a somewhat > > expensive change in that it requires review of a lot of code. > > > > The final question for me is whether we can get away with just not > > deallocating ifnet instances. Reusing them is fine in principle, the > > problem is just keeping the memory type safe. > > What "keeping the memory type safe" means?
Once allocated as ifnet, it will always be an ifnet. > The problem "when we can reuse it?" seems to be similar to "when we can > deallocate it?". Don't we need to do a similar solution I propose? The big question is what do we use rcvif for. If it is just a cookie used for preventing cycles, it doesn't matter what the content is. Otherwise we should have a field whether it was initialized completely or not. Joerg