netdev - Re: [RFC/HACK] net/compat/wext: allow sending different messages to compat tasks

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Message-Id: <1245833315.21314.47.camel@johannes.local>
Date:	Wed, 24 Jun 2009 10:48:35 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	linux-wireless@...r.kernel.org
Cc:	netdev@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [RFC/HACK] net/compat/wext: allow sending different messages
 to compat tasks

On Sun, 2009-06-21 at 15:10 +0200, Johannes Berg wrote:
> Wireless extensions have the unfortunate problem that events
> are multicast, and are not independent of pointer size. Thus,
> currently 32-bit tasks on 64-bit platforms cannot properly
> receive events and fail with all kinds of strange problems,
> for instance wpa_supplicant never notices disassociations, due
> to the way the 64-bit event looks to a 32-bit process the fact
> that the address is all zeroes is lost, it thinks instead it
> is 00:01:00:00:00:00 (actually I'm not entirely sure about the
> position of the 1 but it's like that).

No further comments on this? If I fix sparc and mips, can I get it
merged?

johannes

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