[Xorp-hackers] PIM-SM: Register Decapsulation

Arnout Swinnen aswinnen at etro.vub.ac.be
Fri Sep 21 00:48:11 PDT 2007


Hi All,

 

At the Vrije Universiteit Brussel, a university in Brussels, Belgium; we are
experimenting with modifying the PIM-SM protocol. For this purpose we are
also trying to implement a prototype of the Anycast-RP (RFC 4610), using
XORP. Currently our prototype is currently not working as expecting. So for
debugging reasons (and to gain a better understanding of the Xorp's
workflow), we are also investigating the current XORP source code.

 

At some point in the file pim_proto_register.cpp we encountered the
following comment:

.

// "decapsulate and forward the inner packet to

// inherited_olis(S, G, rpt)"

// 

// XXX: This will happen inside the kernel.

// Here we only install the forwarding entry

//

.

 

We were unable to locate the code where this decapsulation actually happens.
So my question is quiete simple: Where do I have to look to understand the
decapsulation's implementation?

 

 

 

Kind Regards,

 

Arnout Swinnen

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