mac80211: Fix regression that allowed mpaths between non-peers.
authorJavier Cardona <javier@cozybit.com>
Thu, 6 Oct 2011 21:54:22 +0000 (14:54 -0700)
committerJohn W. Linville <linville@tuxdriver.com>
Tue, 11 Oct 2011 20:41:12 +0000 (16:41 -0400)
Mesh paths should only exist over established peer links.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/mac80211/mesh_hwmp.c

index 6df7913..174040a 100644 (file)
@@ -789,11 +789,20 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
        struct ieee802_11_elems elems;
        size_t baselen;
        u32 last_hop_metric;
+       struct sta_info *sta;
 
        /* need action_code */
        if (len < IEEE80211_MIN_ACTION_SIZE + 1)
                return;
 
+       rcu_read_lock();
+       sta = sta_info_get(sdata, mgmt->sa);
+       if (!sta || sta->plink_state != NL80211_PLINK_ESTAB) {
+               rcu_read_unlock();
+               return;
+       }
+       rcu_read_unlock();
+
        baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
        ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
                        len - baselen, &elems);