Hi,
I am attempting to implement some more advanced routing logic via LWIP_HOOK_IP4_ROUTE_SRC. I'm essentially implementing a pseudo-VRF where different routing tables are used for different input netifs, however I'm having a problem getting access to the input netif for a given packet from inside my routing hook function.
I notice that the ip4_input() function sets "current_input_netif = inp" for use by higher-layer protocols to access via ip_current_input_netif(), however this is done _after_ the call to ip4_forward() --> ip4_route_src() --> LWIP_HOOK_IP4_ROUTE_SRC and so I am unable to access this in my routing hook.
Is there any possibility of moving this assignment before ip4_forward() so that routing hooks can get the input netif via ip_current_input_netif() ? The change seems trivial, I can modify my stack locally but is this a sensible thing to do? Or any other way of achieving access to the input netif from ip4_route_src?
Thanks,
Ackwel