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net_alias_main_dev question

Hi,

I'am doing my first steps in the world op kernel programming.
And i'am trying to port a 2.0 patch to a 2.4.20 kernel.
And somewhere in the patch is see the following code

in net/core/dev.c
<code>
struct device *main_dev = net_alias_main_dev(dev);
+                   if(main_dev->do_ioctl==NULL)
+                     return -EOPNOTSUPP;
+                   ret=main_dev->do_ioctl(dev, &ifr, getset);
+                   break;
</code>

What does this net_alias_main_dev() function do?
And does it still exists in 2.4 or is it replaced by another function.
I can't seem to find something about it in my 2.4.20 src


groet


Leo

-- 
Leo      .-----   leo@aki.student.khleuven.be
____    / Eraly
     \/

"Originality is the art of concealing your sources."


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