Forwarding policy

[orion-belt]

https://github.com/travelping/upg-vpp/blob/master/upf/upf_forward.c#L250

Here we already have fib index so ip look up is not required and you can directly send to rewrite node.

vnet_buffer (b)->sw_if_index[VLIB_TX] =
	rpath->frp_fib_index;
next = UPF_FORWARD_NEXT_IP_LOOKUP;

I tried similar approach and it worked.

[sergeymatov]

Direct jump to ip-rewrite chain won't fit the approach if we have dynamic table of custom routes and there is a need to perform a lookup for some particular traffic. In other words - there is a need to do a lookup in our use case

[sergeymatov]

There is a possibility to perform different lookup (like VPP FIB is already doing) based on route path type. Dedicated node and required operations for ip.adj or VLIB_TX can be done in respect to route path containing in the policy.
Later we will do this

[orion-belt]

Thanks a lot @sergeymatov for you information.
Mapping to ip_adj during pre-configuration of policy, will avoids look up for every packet.