[lwip-users] Initialization problem upgrading from 1.4.1 to 2.0.3

[Keith Rubow]

I am trying to use lwip on ARM cortex M4. My development software is 
Atollic Truestudio on Win10. So far I have gotten lwip 1.4.1 to work 
using raw api and a simple multitasking OS.

Now I am trying to change over to lwip 2.0.3, and am having trouble with 
initialization. My initialization code is as follows:
#include "lwipopts.h"
#include "lwip/tcpip.h"
#include "lwip/tcp.h"
struct netif wiznetif;    // network interface struct for wiznet
...
static void initialize_lwip(void) {
    struct ip_addr ipaddr, netmask, gateway;

    IP4_ADDR(&ipaddr, setup.ip_address[0], setup.ip_address[1], 
setup.ip_address[2], setup.ip_address[3]);
    IP4_ADDR(&netmask, setup.subnet[0], setup.subnet[1], 
setup.subnet[2], setup.subnet[3]);
    IP4_ADDR(&gateway, setup.gateway[0], setup.gateway[1], 
setup.gateway[2], setup.gateway[3]);
    tcpip_init(NULL, NULL);
    netif_add(&wiznetif, &ipaddr, &netmask, &gateway, NULL, 
&ethernetif_init, &tcpip_input);
    netif_set_up(&wiznetif);
}

This works with lwip 1.4.1, but with 2.0.3 I get an compile error, 
storage size of 'ipaddr' isn't known. Apparently struct ip_addr isn't 
defined. I must be missing an include. Or maybe the ip address is 
defined differently in 2.0.3? I can't seem to find a simple example of 
initialization code for 2.0.3. BTW, I use ipv4 only, no ipv6.

Also, any other raw api or sys_arch changes I need to watch out for in 
2.0.3?

Keith