mac80211: send notification on new peer candidate for our secure mesh

Also, advertise support for mesh authentication.

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

4 files changed, 21 insertions, 9 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index e2db3dc23953..0ab2a8df312d 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -762,6 +762,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
         local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
 #endif
 
+        /* if the underlying driver supports mesh, mac80211 will (at least)
+         * provide routing of mesh authentication frames to userspace */
+        if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
+                local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
+
         /* mac80211 supports control port protocol changing */
         local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
 
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 47a26c0f6993..11207979e2e2 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -590,9 +590,7 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
         if (elems.mesh_id && elems.mesh_config &&
             mesh_matches_local(&elems, sdata)) {
                 supp_rates = ieee80211_sta_get_rates(local, &elems, band);
-
-                mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
-                                      mesh_peer_accepts_plinks(&elems));
+                mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
         }
 }
 
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index b99e230fe31c..10acf1cc8082 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -226,7 +226,8 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
 int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
 /* Mesh plinks */
 void mesh_neighbour_update(u8 *hw_addr, u32 rates,
-                struct ieee80211_sub_if_data *sdata, bool add);
+                struct ieee80211_sub_if_data *sdata,
+                struct ieee802_11_elems *ie);
 bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
 void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
 void mesh_plink_broken(struct sta_info *sta);
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index b327e0e6c730..84e5b056af02 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -237,8 +237,9 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
         return 0;
 }
 
-void mesh_neighbour_update(u8 *hw_addr, u32 rates, struct ieee80211_sub_if_data *sdata,
-                           bool peer_accepting_plinks)
+void mesh_neighbour_update(u8 *hw_addr, u32 rates,
+                struct ieee80211_sub_if_data *sdata,
+                struct ieee802_11_elems *elems)
 {
         struct ieee80211_local *local = sdata->local;
         struct sta_info *sta;
@@ -248,8 +249,14 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates, struct ieee80211_sub_if_data
         sta = sta_info_get(sdata, hw_addr);
         if (!sta) {
                 rcu_read_unlock();
-
-                sta = mesh_plink_alloc(sdata, hw_addr, rates);
+                /* Userspace handles peer allocation when security is enabled
+                 * */
+                if (sdata->u.mesh.is_secure)
+                        cfg80211_notify_new_peer_candidate(sdata->dev, hw_addr,
+                                        elems->ie_start, elems->total_len,
+                                        GFP_KERNEL);
+                else
+                        sta = mesh_plink_alloc(sdata, hw_addr, rates);
                 if (!sta)
                         return;
                 if (sta_info_insert_rcu(sta)) {
@@ -260,7 +267,8 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates, struct ieee80211_sub_if_data
 
         sta->last_rx = jiffies;
         sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
-        if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN &&
+        if (mesh_peer_accepts_plinks(elems) &&
+                        sta->plink_state == PLINK_LISTEN &&
                         sdata->u.mesh.accepting_plinks &&
                         sdata->u.mesh.mshcfg.auto_open_plinks)
                 mesh_plink_open(sta);