cfg80211/nl80211: separate unicast/multicast default TX keys

Allow userspace to specify that a given key
is default only for unicast and/or multicast
transmissions. Only WEP keys are for both,
WPA/RSN keys set here are GTKs for multicast
only. For more future flexibility, allow to
specify all combiations.

Wireless extensions can only set both so use
nl80211; WEP keys (connect keys) must be set
as default for both (but 802.1X WEP is still
possible).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 4d5acb013636..22be7c625b70 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1211,7 +1211,7 @@ struct cfg80211_ops {
                            u8 key_index, bool pairwise, const u8 *mac_addr);
         int     (*set_default_key)(struct wiphy *wiphy,
                                    struct net_device *netdev,
-                                   u8 key_index);
+                                   u8 key_index, bool unicast, bool multicast);
         int     (*set_default_mgmt_key)(struct wiphy *wiphy,
                                         struct net_device *netdev,
                                         u8 key_index);
@@ -1393,6 +1393,8 @@ struct cfg80211_ops {
  *      control port protocol ethertype. The device also honours the
  *      control_port_no_encrypt flag.
  * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
+ * @WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS: The device supports separate
+ *      unicast and multicast TX keys.
  */
 enum wiphy_flags {
         WIPHY_FLAG_CUSTOM_REGULATORY            = BIT(0),
@@ -1404,6 +1406,7 @@ enum wiphy_flags {
         WIPHY_FLAG_4ADDR_STATION                = BIT(6),
         WIPHY_FLAG_CONTROL_PORT_PROTOCOL        = BIT(7),
         WIPHY_FLAG_IBSS_RSN                     = BIT(8),
+        WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS= BIT(9),
 };
 
 struct mac_address {