cfg80211/nl80211: Add userspace authentication flag to mesh setup

During mesh setup, use NL80211_MESH_SETUP_USERSPACE_AUTH flag to create
a secure mesh and route management frames to userspace.

Also, NL80211_CMD_GET_WIPHY now returns a flag NL80211_SUPPORT_MESH_AUTH
if the wiphy's mesh implementation supports routing of mesh auth frames
to userspace.  This is useful for forward compatibility between old
kernels and new userspace tools.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 0d4b2260f96f..0e5c122ce324 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -72,6 +72,10 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
                 return -EOPNOTSUPP;
 
+        if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
+              setup->is_secure)
+                return -EOPNOTSUPP;
+
         if (wdev->mesh_id_len)
                 return -EALREADY;