Re: Please test: TCP MSS vs PMTUD

2010-04-21 Thread Rich Kulawiec
On Mon, Apr 19, 2010 at 08:30:31AM -0400, Simon Perreault wrote: > PMTUD can only lower TCP MSS (either the default one or the one > advertised by the peer), not raise it. I don't think that's actually true, but it's possible that I'm misunderstanding one or more of {you, the code, RFC 1191}. I *

Please test: TCP MSS vs PMTUD

2010-04-19 Thread Simon Perreault
PMTUD can only lower TCP MSS (either the default one or the one advertised by the peer), not raise it. This is how it was originally but it regressed at some point. The comments still mention the correct behaviour, but the code doesn't do what the comments say. This diff fixes that. Please te