nl80211: Add SOCKET_OWNER support to JOIN_MESH

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[johannes: fix race with wdev lock/unlock by just acquiring once]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 266b43c..98eb37d 100644 (file)
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1964,6 +1964,8 @@ enum nl80211_commands {
  *     station will deauthenticate when the socket is closed.
  *     If set during %NL80211_CMD_JOIN_IBSS the IBSS will be automatically
  *     torn down when the socket is closed.
+ *     If set during %NL80211_CMD_JOIN_MESH the mesh setup will be
+ *     automatically torn down when the socket is closed.
  *
  * @NL80211_ATTR_TDLS_INITIATOR: flag attribute indicating the current end is
  *     the TDLS link initiator.

diff --git a/net/wireless/core.h b/net/wireless/core.h
index b5cf3ea..63eb1b5 100644 (file)
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -303,10 +303,6 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
                         struct net_device *dev,
                         struct mesh_setup *setup,
                         const struct mesh_config *conf);
-int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
-                      struct net_device *dev,
-                      struct mesh_setup *setup,
-                      const struct mesh_config *conf);
 int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
                          struct net_device *dev);
 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index b12da6e..eac5aa1 100644 (file)
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -217,21 +217,6 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
        return err;
 }
 
-int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
-                      struct net_device *dev,
-                      struct mesh_setup *setup,
-                      const struct mesh_config *conf)
-{
-       struct wireless_dev *wdev = dev->ieee80211_ptr;
-       int err;
-
-       wdev_lock(wdev);
-       err = __cfg80211_join_mesh(rdev, dev, setup, conf);
-       wdev_unlock(wdev);
-
-       return err;
-}
-
 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
                              struct wireless_dev *wdev,
                              struct cfg80211_chan_def *chandef)
@@ -286,6 +271,7 @@ int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
 
        err = rdev_leave_mesh(rdev, dev);
        if (!err) {
+               wdev->conn_owner_nlportid = 0;
                wdev->mesh_id_len = 0;
                wdev->beacon_interval = 0;
                memset(&wdev->chandef, 0, sizeof(wdev->chandef));

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 13f7c00..1d6e81e 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10092,7 +10092,7 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
                if (err)
                        return err;
        } else {
-               /* cfg80211_join_mesh() will sort it out */
+               /* __cfg80211_join_mesh() will sort it out */
                setup.chandef.chan = NULL;
        }
 
@@ -10130,7 +10130,13 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
        setup.userspace_handles_dfs =
                nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
 
-       return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
+       wdev_lock(dev->ieee80211_ptr);
+       err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
+       if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
+               dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
+       wdev_unlock(dev->ieee80211_ptr);
+
+       return err;
 }
 
 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)