[net2-wg] Packet interface

Philip Levis pal at cs.stanford.edu
Thu Dec 1 08:42:54 PST 2005


On Nov 30, 2005, at 5:02 PM, Kyle Jamieson wrote:

>
>> It's definitely the case that an app can have N entries, if it wants.
>> There's no restriction in that regard. Chances are a pool entry is
>> ~20 bytes at most.
>
> Cool, but can an app decide at runtime that it wants to send to N+1
> sources instead of N?  Mightn't that be useful at some point in the
> long-lived future of TOS-2?

Well, you can always send to N+1 destinations. You only can have  
outstanding packets (at the data link layer) to N destinations at any  
time. You can allocate your entries to destinations as need be. E.g.,  
a simple packet queue has a single entry, and changes the entry to  
reflect the destination of the first packet in the queue.

Phil


-------

"We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time."

- T. S. Eliot,  'Little Gidding'





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