Subject: Re: Serial port issues on Sun4/260
To: None <bwalker@musings.com, greywolf@captech.com,>
From: Chris Torek <torek@BSDI.COM>
List: port-sparc
Date: 01/17/1996 17:10:30
>[Chris (Torek), how about you? Any ideas?]
Not really, no. I know kind of what it should do and sort-of-vaguely
how Mike planned to do it, but that is about it.
>Connect thru STREAMS is also less than optimal. Pushing all the required
>modules atop the STREAM head costs some time.
It *should* be unnoticeable. The problem with SysV STREAMS, if you
have ever looked at it, is that it bends the stream model (a simple
up- and downward dataflow) all out of shape to accomodate:
- control messages (ioctl et al), with timeouts
(this simply does not fit in the model! I do not know
of any good way to do it)
- multiplexors
The stream multiplexors in particular are super-hairy, quite literally
thousands of lines of code to do what the IP protocol switch or the
TCP control blocks do in hundreds. There has got to be a better way.
Chris