mac80211: notify the driver about authentication status

This can allow the driver to take action based on the
success / failure of the authentication.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 51 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7a966f3ed67a..6cddf7725bf2 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -303,9 +303,11 @@ enum ieee80211_bss_change {
 /**
  * enum ieee80211_event_type - event to be notified to the low level driver
  * @RSSI_EVENT: AP's rssi crossed the a threshold set by the driver.
+ * @MLME_EVENT: event related to MLME
  */
 enum ieee80211_event_type {
         RSSI_EVENT,
+        MLME_EVENT,
 };
 
 /**
@@ -327,14 +329,48 @@ struct ieee80211_rssi_event {
 };
 
 /**
+ * enum ieee80211_mlme_event_data - relevant when event type is %MLME_EVENT
+ * @AUTH_EVENT: the MLME operation is authentication
+ */
+enum ieee80211_mlme_event_data {
+        AUTH_EVENT,
+};
+
+/**
+ * enum ieee80211_mlme_event_status - relevant when event type is %MLME_EVENT
+ * @MLME_SUCCESS: the MLME operation completed successfully.
+ * @MLME_DENIED: the MLME operation was denied by the peer.
+ * @MLME_TIMEOUT: the MLME operation timed out.
+ */
+enum ieee80211_mlme_event_status {
+        MLME_SUCCESS,
+        MLME_DENIED,
+        MLME_TIMEOUT,
+};
+
+/**
+ * enum ieee80211_mlme_event - data attached to an %MLME_EVENT
+ * @data: See &enum ieee80211_mlme_event_data
+ * @status: See &enum ieee80211_mlme_event_status
+ * @reason: the reason code if applicable
+ */
+struct ieee80211_mlme_event {
+        enum ieee80211_mlme_event_data data;
+        enum ieee80211_mlme_event_status status;
+        u16 reason;
+};
+
+/**
  * struct ieee80211_event - event to be sent to the driver
  * @type The event itself. See &enum ieee80211_event_type.
  * @rssi: relevant if &type is %RSSI_EVENT
+ * @mlme: relevant if &type is %AUTH_EVENT
  */
 struct ieee80211_event {
         enum ieee80211_event_type type;
         union {
                 struct ieee80211_rssi_event rssi;
+                struct ieee80211_mlme_event mlme;
         } u;
 };
 
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a8c8fe4c9f49..7865998d69dd 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2495,6 +2495,10 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
         u8 bssid[ETH_ALEN];
         u16 auth_alg, auth_transaction, status_code;
         struct sta_info *sta;
+        struct ieee80211_event event = {
+                .type = MLME_EVENT,
+                .u.mlme.data = AUTH_EVENT,
+        };
 
         sdata_assert_lock(sdata);
 
@@ -2527,6 +2531,9 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
                            mgmt->sa, status_code);
                 ieee80211_destroy_auth_data(sdata, false);
                 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+                event.u.mlme.status = MLME_DENIED;
+                event.u.mlme.reason = status_code;
+                drv_event_callback(sdata->local, sdata, &event);
                 return;
         }
 
@@ -2549,6 +2556,8 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
                 return;
         }
 
+        event.u.mlme.status = MLME_SUCCESS;
+        drv_event_callback(sdata->local, sdata, &event);
         sdata_info(sdata, "authenticated\n");
         ifmgd->auth_data->done = true;
         ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
@@ -3805,12 +3814,18 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                         ieee80211_destroy_auth_data(sdata, false);
                 } else if (ieee80211_probe_auth(sdata)) {
                         u8 bssid[ETH_ALEN];
+                        struct ieee80211_event event = {
+                                .type = MLME_EVENT,
+                                .u.mlme.data = AUTH_EVENT,
+                                .u.mlme.status = MLME_TIMEOUT,
+                        };
 
                         memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
 
                         ieee80211_destroy_auth_data(sdata, false);
 
                         cfg80211_auth_timeout(sdata->dev, bssid);
+                        drv_event_callback(sdata->local, sdata, &event);
                 }
         } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
                 run_again(sdata, ifmgd->auth_data->timeout);