[ns] obtaining queuing delay from MAC 802.11 send() function?

[shshah@cairo.cs.uiuc.edu]

On Mon, 8 Apr 2002 shshah@cairo.cs.uiuc.edu wrote:

> 
> Hi,
> 
> I would like to obtain an estimate of  queuing delay of a particular flow 
> being transmitted over MAC 802.11 from within the MAC 802.11 send 
> functions. How should I go about doing this? I tried using ch->timestamp() 
> where ch is a pointer to the common header structure, but I'm unable to 
> understandly exactly what the common header variable ts_ stores.

Sorry to follow up to my own post, but to further clarify, I want to know 
the queuing delay experienced by a packet before it is transmitted using 
the 802.11 send() function. I tried using ch->timestamp() for each packet 
being sent (since it is indicated in the NS Manual that the variable 
ts_ can be used for estimating queuing delay) but I was unable to 
interpret exactly what this returns.

Regards,
Samarth.