nl80211: Event notifications for MLME events

Add new nl80211 event notifications (and a new multicast group, "mlme")
for informing user space about received and processed Authentication,
(Re)Association Response, Deauthentication, and Disassociation frames in
station and IBSS modes (i.e., MLME SAP interface primitives
MLME-AUTHENTICATE.confirm, MLME-ASSOCIATE.confirm,
MLME-REASSOCIATE.confirm, MLME-DEAUTHENTICATE.indicate, and
MLME-DISASSOCIATE.indication). The event data is encapsulated as the 802.11
management frame since we already have the frame in that format and it
includes all the needed information.

This is the initial step in providing MLME SAP interface for
authentication and association with nl80211. In other words, kernel code
will act as the MLME and a user space application can control it as the
SME.

Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 1f49b63d8dd2..6dc7a61bc18b 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1085,11 +1085,13 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
         case WLAN_AUTH_OPEN:
         case WLAN_AUTH_LEAP:
                 ieee80211_auth_completed(sdata);
+                cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
                 break;
         case WLAN_AUTH_SHARED_KEY:
-                if (ifmgd->auth_transaction == 4)
+                if (ifmgd->auth_transaction == 4) {
                         ieee80211_auth_completed(sdata);
-                else
+                        cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
+                } else
                         ieee80211_auth_challenge(sdata, mgmt, len);
                 break;
         }
@@ -1125,6 +1127,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
 
         ieee80211_set_disassoc(sdata, true, false, 0);
         ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED;
+        cfg80211_send_rx_deauth(sdata->dev, (u8 *) mgmt, len);
 }
 
 
@@ -1154,6 +1157,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
         }
 
         ieee80211_set_disassoc(sdata, false, false, reason_code);
+        cfg80211_send_rx_disassoc(sdata->dev, (u8 *) mgmt, len);
 }
 
 
@@ -1370,6 +1374,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
         ieee80211_set_associated(sdata, changed);
 
         ieee80211_associated(sdata);
+        cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
 }