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mac80211: support GTK rekey offload

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This adds the necessary mac80211 APIs to support
GTK rekey offload, mirroring the functionality
from cfg80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2011-07-05 16:35:41 +02:00
committed by John W. Linville
parent e5497d766a
commit c68f4b892c
5 changed files with 107 additions and 0 deletions
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20
include/net/mac80211.h
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@@ -1700,6 +1700,12 @@ enum ieee80211_ampdu_mlme_action {
* which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY.
* The callback must be atomic.
*
* @set_rekey_data: If the device supports GTK rekeying, for example while the
* host is suspended, it can assign this callback to retrieve the data
* necessary to do GTK rekeying, this is the KEK, KCK and replay counter.
* After rekeying was done it should (for example during resume) notify
* userspace of the new replay counter using ieee80211_gtk_rekey_notify().
*
* @hw_scan: Ask the hardware to service the scan request, no need to start
* the scan state machine in stack. The scan must honour the channel
* configuration done by the regulatory agent in the wiphy's
@@ -1912,6 +1918,9 @@ struct ieee80211_ops {
struct ieee80211_key_conf *conf,
struct ieee80211_sta *sta,
u32 iv32, u16 *phase1key);
void (*set_rekey_data)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_gtk_rekey_data *data);
int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct cfg80211_scan_request *req);
void (*cancel_hw_scan)(struct ieee80211_hw *hw,
@@ -2585,6 +2594,17 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf,
struct sk_buff *skb,
enum ieee80211_tkip_key_type type, u8 *key);
/**
* ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying
* @vif: virtual interface the rekeying was done on
* @bssid: The BSSID of the AP, for checking association
* @replay_ctr: the new replay counter after GTK rekeying
* @gfp: allocation flags
*/
void ieee80211_gtk_rekey_notify(struct ieee80211_vif *vif, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp);
/**
* ieee80211_wake_queue - wake specific queue
* @hw: pointer as obtained from ieee80211_alloc_hw().