Policy Routing: dst_entry Lookup in Linux kernel

Previously I examined IPv6 packet flow in Linux kernel for MIPv6 signaling and data communication. Later, I had to focus to policy routing. I need to find the way, how dst_entry have looked up. The following graph shows how works Policy routing in Linux kernel.

Download: dst_entry-v2.1.pdf

Detailed explanation of version 2.1: Policy routing details

Revision log:

• 1.0
• 2.0
• Extend graph with lookup process of the routing entry itself
• New entry point: IP6IP6 tunnel transmission
• 2.1
• Add fib6 tree-node-info architecture

Posted in: ipv6,kernel,linux,policy routing