cfg80211/mac80211: allow per-station GTKs
This adds API to allow adding per-station GTKs,
updates mac80211 to support it, and also allows
drivers to remove a key from hwaccel again when
this may be necessary due to multiple GTKs.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 47316a6..33aa2e3 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1041,6 +1041,13 @@
* @IEEE80211_HW_NEED_DTIM_PERIOD:
* This device needs to know the DTIM period for the BSS before
* associating.
+ *
+ * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports
+ * per-station GTKs as used by IBSS RSN or during fast transition. If
+ * the device doesn't support per-station GTKs, but can be asked not
+ * to decrypt group addressed frames, then IBSS RSN support is still
+ * possible but software crypto will be used. Advertise the wiphy flag
+ * only in that case.
*/
enum ieee80211_hw_flags {
IEEE80211_HW_HAS_RATE_CONTROL = 1<<0,
@@ -1064,6 +1071,7 @@
IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18,
IEEE80211_HW_CONNECTION_MONITOR = 1<<19,
IEEE80211_HW_SUPPORTS_CQM_RSSI = 1<<20,
+ IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21,
};
/**
@@ -2582,6 +2590,22 @@
void ieee80211_request_smps(struct ieee80211_vif *vif,
enum ieee80211_smps_mode smps_mode);
+/**
+ * ieee80211_key_removed - disable hw acceleration for key
+ * @key_conf: The key hw acceleration should be disabled for
+ *
+ * This allows drivers to indicate that the given key has been
+ * removed from hardware acceleration, due to a new key that
+ * was added. Don't use this if the key can continue to be used
+ * for TX, if the key restriction is on RX only it is permitted
+ * to keep the key for TX only and not call this function.
+ *
+ * Due to locking constraints, it may only be called during
+ * @set_key. This function must be allowed to sleep, and the
+ * key it tries to disable may still be used until it returns.
+ */
+void ieee80211_key_removed(struct ieee80211_key_conf *key_conf);
+
/* Rate control API */
/**