[Click] Using LookupGeographicGridRoute

[Douglas S. J. De Couto]

the geo fwding code hasn't been exercised in a while.

hacking will be required.

main differences:

GLI2 can run in kernel, while the regular GLI can only run at userlevel 
(it has floating point code in it, I believe)

with some hacking, they could be made to have the same interface, and 
any elements using them can be changed to use the interface instead of 
the particular element.

LookupLocalGridRoute is agnostic, meaning it can be on a push or pull 
path, while LookupGeographicGridRoute is probablu push-only, as the 
DSDV configs used to be all push (in userlevel).   The current config 
looks up routes on a pull path, so LookupGeoGridRotue won't work.  
Again, some hacking can fix this.  (``it's easy...'')

> I've been trying unsucessfully to use the LookupGeographicGridRoute
> Element. Basically, I've taken the dsdv sample code (Generated via
> ./conf/make-dsdv-config.pl) and modified it substituting
> LookupGeographicGridRoute for LookupLocalGridRoute. I added an extra 
> input
> (GridLocationInfo2 element "li") into the function as well. I 
> originally
> thought that the LookupLocalGridRoute and LookupGeographicGridRoute 
> were
> interchangeable, but it doesn't seem like it. I'm getting the following
> errors:
>
> warning: dev0/geo: GridLocationInfo argument li has the wrong type
>   unspecified error
> 'dev0/data_counter_out :: Counter' pull output 0 connected to 'dev0/tr 
> ::
> TimeRange' push input 0
> 'dev0/FixupGridHeaders at 13/SetGridChecksum at 2 :: SetGridChecksum' push
> output 0 connected to 'dev0/data_counter_out2 :: Counter' pull input 0
> nop_gpsr2.click:59: 'dev0/geo :: LookupGeographicGridRoute' output 1
> unused
> Router could not be initialized!
>
> It seems to me that the first error (GridLocationInfo argument li has
> wrong type) can be fixed by replacing GridLocationInfo2 with
> GridLocationInfo. There shouldn't be a difference between the two 
> right?
>
> I'm not sure about the other stuff. Any help would be greatly 
> appreciated.
> thanks!
>
> -Bow-Nan
>
> -- 
> Bow-Nan Cheng
> Senior Web Developer
> Nanwob Solutions
> Email: bcheng at nanwob.net
> Mobile: (201) 563-3875
> http://www.nanwob.net
>
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--
Douglas S. J. De Couto    <decouto at csail.mit.edu>