Re: [lwip-users] Xilinx -> Microblaze -> NetIF Question

[Bill Lawson]

Are you using XMK as your operating system?  I had some threading issues 
if I used XMK calls to create new threads rather than the lwIP 
sys_thread_new() function.  I may be way off here, but it is worth 
checking out.

--Bill

Lachlan Grogan wrote:
> Hey All,
>  
> I have encountered an issue, not to sure if it is my poor coding, a 
> limitation of lwip, or one of these memory alignment issues i've been 
> reading about.
>  
> I have the following example code:
>  
> void foo_bar()
> {
>     struct netif * default_netif;
>  
>     .... Init Code Goes Here
>  
>     default_netif = netif_add(......)
>  
>     ... more code goes here.   
> }
>  
> This works fine and my system is up and operational.  However I wish 
> to do the following:
>  
>  
> struct netif * default_netif;
>  
> void foo_bar()
> { 
>     .... Init Code Goes Here
>  
>     default_netif = netif_add(......)
>  
>     ... more code goes here.   
> }
>  
>  
> This code does not work, netif_add(..) does not return, and crashes my 
> MicroBlaze. 
> It is far superior for me to have the pointer to the netif "global" so 
> as other functions can make use of it.
>  
> Can anyone suggest a solution, or see anything stupid that im doing?
>  
> Kind Regards
> Lachlan Grogan.