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    mac80211: add APIs to allow keeping connections after WoWLAN · 27b3eb9c
    Johannes Berg 提交于
    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.
    Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
    27b3eb9c
util.c 58.6 KB