I will update the LWIP version on an application built on the 1.4 version of the stack.
This version is not calling the ethernetif_input(&fsl_netif0) in the loop. Also this version has the option to configure the
macro ENET_RECEIVE_ALL_INTERRUPT and call from the ISR the ethernetif_input().
In my understanding the porting is based on this function called from the main loop and no option to have it in the ISR context is available.
Fix me if I am not correct