[RTnet-users] encapsuling packets (ethernet over ethercat)

[Stéphane A. <san...@fr...>]

Hi,

I am thinking about an implementation I need, and I am not sure which 
way will be the best .

1/ I need to catch tcp/ip packets routed from non realtime nic eth0 .
2/ I encapsulate the tcp/ip frames in the final protocol and send the 
frame request to rteth0 (realtime)
3/ I will receive reply on realtime rteth0 s. I will then remove 
encapsulation from this frame and send it back to  non realtime net 
through eth0.

In this scenario, I will need routing in rtnet stack ?
I don't want to manage ARP messages.
Do I need tun/tap interface ?

ETH0 ===> Encapsulating packet with an application ===> RTETH0

reply :

RTETH0 => removing encapsulation => ETH0


Regards,
Steph