On Mon, 02 Oct 2023 22:16:13 -0700 John Fastabend wrote: > > This with the other piece we want from our side to allow running > > verdict and sk_msg programs on sockets without having them in a > > sockmap/sockhash it would seem like a better system to me. The > > idea to drop the sockmap/sockhash is because we never remove progs > > once they are added and we add them from sockops side. The filter > > to socketes is almost always the port + metadata related to the > > process or environment. This simplifies having to manage the > > sockmap/sockhash and guess what size it should be. Sometimes we > > overrun these maps and have to kill connections until we can > > get more space. That's a step in the right direction for sure, but I still think that Google's auto-lowat is the best approach. We just need a hook that looks at incoming data and sets rcvlowat appropriately. That's it. TCP looks at rcvlowat in a number of places to make protocol decisions, not just the wake-up. Plus Google will no longer have to carry their OOT patch..
