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Re: [PATCH 1/3] mwifiex: add cfg80211 set_default_mgmt_key handler

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On Tue, Mar 31, 2015 at 07:33:39AM -0700, Avinash Patil wrote:
> We feel set_default_key_mgmt handler is required for devices which supports 2 pair of GTKs.

Why would a device not support multiple GTKs/IGTKs? It does not sound
possible to implement RSN correctly without such support.. AP side could
kind of try to work with only a single GTK/IGTK, but non-AP STA would
not handle GTK/IGTK rekeying. In any case, IEEE Std 802.11-2012 seems to
be pretty clear on the assumption being that the device (including
AP-only cases) supports multiple GTK/IGTK. The authenticator state
machines use key index values 1 and 2 and swap between these when doing
rekeying.

-- 
Jouni Malinen                                            PGP id EFC895FA
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