mac80211: 802.11w - Use BIP (AES-128-CMAC)

Add mechanism for managing BIP keys (IGTK) and integrate BIP into the
TX/RX paths.

Signed-off-by: Jouni Malinen <j@w1.fi>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index cceb9e8..df98a8a 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1139,6 +1139,7 @@
 /* reserved: 				0x000FAC03 */
 #define WLAN_CIPHER_SUITE_CCMP		0x000FAC04
 #define WLAN_CIPHER_SUITE_WEP104	0x000FAC05
+#define WLAN_CIPHER_SUITE_AES_CMAC	0x000FAC06
 
 #define WLAN_MAX_KEY_LEN		32
 
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 218f0e7..ee742bc 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -72,8 +72,8 @@
  *
  * @NL80211_CMD_GET_KEY: Get sequence counter information for a key specified
  *	by %NL80211_ATTR_KEY_IDX and/or %NL80211_ATTR_MAC.
- * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT or
- *	%NL80211_ATTR_KEY_THRESHOLD.
+ * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT,
+ *	%NL80211_ATTR_KEY_DEFAULT_MGMT, or %NL80211_ATTR_KEY_THRESHOLD.
  * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA,
  *	%NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC and %NL80211_ATTR_KEY_CIPHER
  *	attributes.
@@ -346,6 +346,8 @@
 	NL80211_ATTR_WIPHY_FREQ,
 	NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 
+	NL80211_ATTR_KEY_DEFAULT_MGMT,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 6619ed1..df78abc 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -473,6 +473,8 @@
  *
  * @set_default_key: set the default key on an interface
  *
+ * @set_default_mgmt_key: set the default management frame key on an interface
+ *
  * @add_beacon: Add a beacon with given parameters, @head, @interval
  *	and @dtim_period will be valid, @tail is optional.
  * @set_beacon: Change the beacon parameters for an access point mode
@@ -520,6 +522,9 @@
 	int	(*set_default_key)(struct wiphy *wiphy,
 				   struct net_device *netdev,
 				   u8 key_index);
+	int	(*set_default_mgmt_key)(struct wiphy *wiphy,
+					struct net_device *netdev,
+					u8 key_index);
 
 	int	(*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
 			      struct beacon_parameters *info);
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 8a305bf..61f1f37 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -651,11 +651,13 @@
  * @ALG_WEP: WEP40 or WEP104
  * @ALG_TKIP: TKIP
  * @ALG_CCMP: CCMP (AES)
+ * @ALG_AES_CMAC: AES-128-CMAC
  */
 enum ieee80211_key_alg {
 	ALG_WEP,
 	ALG_TKIP,
 	ALG_CCMP,
+	ALG_AES_CMAC,
 };
 
 /**