Johannes Berg <johannes@sipsolutions.net> writes:

> On Tue, 2007-10-09 at 11:41 -0600, Eric W. Biederman wrote:
>
>> So please hold off on this until the kernel has been audited and
>> we have removed all of the uses of ifindex that assume ifindex is
>> global, that we can find.
>
> I certainly have this assumption in the wireless code (cfg80211). How
> would I go about removing it? Are netlink sockets per-namespace so I can
> use the namespace of the netlink socket to look up a netdev?

Yes.  Netlink sockets are per-namespace and you can use the namespace
of a netlink socket to look up a netdev.

Eric