Merge branch 'drm-nouveau-destage' of git://people.freedesktop.org/~airlied/linux

[linux-2.6-microblaze.git] / net / mac80211 / mesh_plink.c

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index a172517..4e53c4c 100644 (file)
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -31,6 +31,12 @@
 #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
 #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
 
+/* We only need a valid sta if user configured a minimum rssi_threshold. */
+#define rssi_threshold_check(sta, sdata) \
+               (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
+               (sta && (s8) -ewma_read(&sta->avg_signal) > \
+               sdata->u.mesh.mshcfg.rssi_threshold))
+
 enum plink_event {
        PLINK_UNDEFINED,
        OPN_ACPT,
@@ -96,9 +102,9 @@ static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
        if (!sta)
                return NULL;
 
-       sta_info_move_state(sta, IEEE80211_STA_AUTH);
-       sta_info_move_state(sta, IEEE80211_STA_ASSOC);
-       sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
+       sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+       sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
+       sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
 
        set_sta_flag(sta, WLAN_STA_WME);
 
@@ -301,7 +307,8 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates,
        if (mesh_peer_accepts_plinks(elems) &&
                        sta->plink_state == NL80211_PLINK_LISTEN &&
                        sdata->u.mesh.accepting_plinks &&
-                       sdata->u.mesh.mshcfg.auto_open_plinks)
+                       sdata->u.mesh.mshcfg.auto_open_plinks &&
+                       rssi_threshold_check(sta, sdata))
                mesh_plink_open(sta);
 
        rcu_read_unlock();
@@ -531,6 +538,14 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                return;
        }
 
+       if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
+           !rssi_threshold_check(sta, sdata)) {
+               mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
+                       mgmt->sa);
+               rcu_read_unlock();
+               return;
+       }
+
        if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
                mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
                rcu_read_unlock();