NicheStack - changing IP address without rebooting

Altera_Forum · ‎05-12-2014

Hi,

is there a way of changing IP address of the Nios2 without rebooting the whole Nios?

Looking through the sources of iniche I can see there is only a alt_iniche_init() procedure, but nothing for shutting it down or re-starting it...

So far I have tried something like

             
tse_mac_close(0);
delete_network_tasks();
netmain();
create_network_tasks();

but instead of closing and reopening the same interface, it "discovers" a 2nd interface


....................................
prep_tse_mac 0
Your Ethernet MAC address is 00:07:35:04:b2:77
Static IP Address is 172.16.100.81
prepped 1 interface, initializing...
....................................
iniche restart triggered...
Deleting network tasks...DONE
InterNiche Portable TCP/IP, v3.1
Copyright 1996-2008 by InterNiche Technologies. All rights reserved.
prep_tse_mac 1
Your Ethernet MAC address is 00:07:35:04:b2:77
Static IP Address is 172.16.100.64
prepped 2 interfaces, initializing...
....................................

Thanks!

Altera_Forum · ‎05-12-2014

I believe you're looking for ni_set_config(). See net.h and iface.c in the iniche files.


/* FUNCTION: ni_set_config()
 * 
 * set IP address and subnet for a particular device.
 *
 * PARAM1: NET ifp
 * PARAM2: struct niconfig_0 * cfg
 *
 * RETURNS: 0
 */

Altera_Forum · ‎05-14-2014

Thanks, that worked nicely (and seems safer than this solution (http://www.alteraforum.com/forum/showthread.php?t=24101)).

Altera_Forum · ‎10-16-2014

Hi there,

I'm reviving this thread with a follow-up question:

is it possible to change the mac address on the fly in nichestack?

I didn't consider this need at start, but yesterday I configured on a system a MAC address (possibly a reserved group) and subsequently was unable to access it via switched network.

Altera_Forum · ‎02-19-2016

--- Quote Start ---

I believe you're looking for ni_set_config(). See net.h and iface.c in the iniche files.


/* FUNCTION: ni_set_config()
 * 
 * set IP address and subnet for a particular device.
 *
 * PARAM1: NET ifp
 * PARAM2: struct niconfig_0 * cfg
 *
 * RETURNS: 0
 */

--- Quote End ---

the proposed solution worked just fine until I realized I need the possibility to change the gateway as well. Are you aware of any such function to allow me that?

Altera_Forum · ‎02-19-2016

You probably need to write your own function to do that, as it doesn't look like there is one around already.