[altq 1131] Re: ECN implementation

[Nicolas Christin <nicolas@cs.virginia.edu>]

>>This sounds great. Thanks for the reply! Is there prediction
>>when ALTQ 3.1 will be available?
>>
> 
> In a couple of months, I guess.  But I'm not sure if I can support ECN
> in TCP for all the BSDs...


	In that respect, I have a very naive question... ECN is to be handled by 
the sender and the receiver of a TCP flow. What does a queuing scheme 
have to do with that except for marking the CE bit?

	Is that the struct field corresponding to this CE bit in the different 
BSDs that causes a problem? Something related?

	Sorry if this question sounds dumb, but end-to-end congestion control and 
per-hop scheduling and dropping seem pretty orthogonal to me.

	--Nick

P.S.: Quick auxiliary question (I could look it up by myself, but I'm 
too lazy :-): does the RFC in question specify anything about ECN nonces?