Re: standard_window_size.

[cathrynham <cathrynm@junglevision.com>]

Bob Donnell wrote:
>
> As a more advanced option for serial-port-interfaced TNC's is that I know
> that some TNC's can be configured to provide CD information, usually on the
> CD line.  That information could be used by the AX.25 driver to pause
> timers, as an alternate AX.25 driver attachment option.
>   

This sounds like a good idea.  If CD is available we only queue the packets
when CD transitions from 1 to 0, indicating that the sending station is 
done transmitting
and only after the stack has processed its entire receive queue.

Maybe not ideal, I was thinking the ax25 code could wait for 'nothing has
been received for XX time' as a way to hackily detect the 'end of 
transmission'
on a half-duplex channel.


I'm not sure how you get that 'CD' bit all the way from the TNC up to the
Linux ax25 stack.  It would be a hideous hack, but could we just
write a file to '/proc/net/ax25/ax0/CD and set that to 0 or 1?