Re: [PATCH] mac80211: add APIs to allow keeping connections after WoWLAN

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2013-08-12 at 14:07 +0200, Johannes Berg wrote:
> From: Johannes Berg <johannes.berg@intel.com>
> 
> In order to be able to (securely) keep connections alive after
> the system was suspended for WoWLAN, we need some additional
> APIs. We already have API (ieee80211_gtk_rekey_notify) to tell
> wpa_supplicant about the new replay counter if GTK rekeying
> was done by the device while the host was asleep, but that's
> not sufficient.
> 
> If GTK rekeying wasn't done, we need to tell the host about
> sequence counters for the GTK (and PTK regardless of rekeying)
> that was used while asleep, add ieee80211_set_key_rx_seq() for
> that.
> 
> If GTK rekeying was done, then we need to be able to disable
> the old keys (with ieee80211_remove_key()) and allocate the
> new GTK key(s) in mac80211 (with ieee80211_gtk_rekey_add()).
> 
> If protocol offload (e.g. ARP) is implemented, then also the
> TX sequence counter for the PTK must be updated, using the new
> ieee80211_set_key_tx_seq() function.

Applied.

johannes