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Re: [PATCH] mac80211: allow key deletion for mesh interface

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In the ieee80211_free_sta_keys, the key idx 4 is not deleted, since it
is limited by NUM_DEFAULT_KEYS.

----
Chun-Yeow

On Tue, Jun 18, 2013 at 3:56 PM, Yeoh Chun-Yeow <yeohchunyeow@xxxxxxxxx> wrote:
> In authsae, we have a GTK with key index 4 as follow:
> install_key(&nlcfg, peer, CIPHER_AES_CMAC, NL80211_KEYTYPE_GROUP, 4, peer_mgtk);
>
> We may need to delete this key while doing re-authentication for the
> same peer mesh STA due to accidental reboot. Otherwise, this GTK key
> is not deleted.
>
> ---
> Chun-Yeow
>
> On Tue, Jun 18, 2013 at 3:31 PM, Johannes Berg
> <johannes@xxxxxxxxxxxxxxxx> wrote:
>> On Tue, 2013-06-18 at 12:07 +0800, Chun-Yeow Yeoh wrote:
>>> This is to support key deletion for mesh interface, especially
>>> to be used for key which is not deleted even with the deletion
>>> of peer mesh station.
>>
>> Can you explain which keys in mesh aren't deleted? It seems the
>> per-station keys would be deleted when the station is deleted, and
>> something like "GTK" would be deleted when leaving the mesh?
>>
>> johannes
>>
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