[Olsr-dev] events/notifications for route changes?

[Hannes Gredler]

ian,

pls see olsr_update_kernel_routes() in process_route.c

the post-SPF processing code figures out if there are

-any new routes (add), or
- routes have changed their next-hops (change) or
- routes are unreachable (delete)

and puts the rt_entry into on of the three queues.
all you have to do, is to add callbacks
at the fron of each queue processing fucntion.

/hannes

On Thu, May 22, 2008 at 06:05:22PM -0400, Ian Rose wrote:
| Greetings all,
| 
| I'm just getting started with OLSR hacking and I'm interested in 
| developing a plugin that would receive some kind of notification from 
| the OLSR core code whenever a network route is updated (added, deleted, 
| changed).  From digging through the code (v0.5.5) I see that there seems 
| to be a mechanism by which plugins can register callbacks for when 
| network interfaces are added/removed (add_ifchgf and del_ifchgf in 
| src/interfaces.h).  But I am unable to find analogous functions to 
| registering callbacks for when routes change.  Does such a thing exist?
| 
| Obviously I could hack around this by scanning the whole routing table 
| every X seconds and looking for differences from the last time I looked, 
| but this is rather less appealing to me than a nice simple callback 
| mechanism.
| 
| thanks very much for any pointers,
| 
| Ian Rose
| Harvard University
| 
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