mac80211: ignore peers if security is enabled for this mesh

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

4 files changed, 10 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d9428afd8bf6..dc623d884d02 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1053,6 +1053,7 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
         ifmsh->mesh_pp_id = setup->path_sel_proto;
         ifmsh->mesh_pm_id = setup->path_metric;
+        ifmsh->is_secure = setup->is_secure;
 
         return 0;
 }
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6450100594ba..8d6d6e3d95da 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -490,6 +490,7 @@ struct ieee80211_if_mesh {
         bool accepting_plinks;
         const u8 *ie;
         u8 ie_len;
+        bool is_secure;
 };
 
 #ifdef CONFIG_MAC80211_MESH
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 1c244c0c7664..47a26c0f6993 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -573,6 +573,10 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
         ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
                                &elems);
 
+        /* ignore beacons from secure mesh peers if our security is off */
+        if (elems.rsn_len && !sdata->u.mesh.is_secure)
+                return;
+
         if (elems.ds_params && elems.ds_params_len == 1)
                 freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
         else
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index c705b20e1acb..bafe25594e09 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -449,6 +449,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 mpl_dbg("Mesh plink: missing necessary peer link ie\n");
                 return;
         }
+        if (elems.rsn_len && !sdata->u.mesh.is_secure) {
+                mpl_dbg("Mesh plink: can't establish link with secure peer\n");
+                return;
+        }
 
         ftype = mgmt->u.action.u.plink_action.action_code;
         ie_len = elems.peer_link_len;