On Tue, 2006-08-15 at 19:05 +0400, Evgeniy Polyakov wrote:

quoted

Not sure on the details; but you say: when we reach the threshold all
following packets will be dropped. So if you provide enough memory to
exceed the limit, you have some extra. If you then use that extra bit to
allow ACKs to pass through, then you're set.

Sounds good, but you'd have to carve a path for the ACKs, right? Or is
that already there?

Acks with or without attached data are processed before data queueing.
See tcp_rcv_established().

Right, however I just realised that most storage protocols (level 7)
have their own ACK msgs and do not rely on TCP (level 4) ACKs like this.

So I would like to come back on this, I do need a full data channel
open.