Re: wpa supplicant/ipw3945, ESSID last char missing

From: John W. Linville
Date: Wed Oct 04 2006 - 08:50:11 EST


On Tue, Oct 03, 2006 at 08:36:46PM -0400, Sean wrote:
> On Tue, 3 Oct 2006 17:30:31 -0700
> Jean Tourrilhes <jt@xxxxxxxxxx> wrote:
>
> > How does that happen in practice ? Kernel has no clue on what
> > userpace version is running.
> >
>
> Ted mentioned that the way it works for stat is that userspace requests
> an API version and the kernel delivers it. So old versions request old
> API and new versions request new API. You only ever _add_ new API, and
> never remove older versions.

I think the point is that the API currently has no such facility.
Adding a new set of WE ioctls is unpalatable, both for general
ioctl-haters and because the WE ioctl collection is quite broad.
Maybe that could be solved by forcing the new WE stuff to use
the netlink-based WE facilities, but then you are expanding the
compatibility nightmare for whatever replaces WE.

John
--
John W. Linville
linville@xxxxxxxxxxxxx
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/