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SubjectRe: ioctl call for network device
> but I believe that I'm oblige to use the struct ifreq and I can't
> pass any other arguments because an user can't acces kernel space
> so the ioctl call recopy data in the kernel space (this is what I've
> understood, maybe I'm wrong ...).

You can either pass your own data inside of ifr_data[] or you can pass
a pointer in ifr_data and do the copy to/from user space yourself
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