1 files changed, 21 insertions, 0 deletions

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 47da552ce8a6..f735826f055c 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -119,6 +119,27 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
         return sta;
 }
 
+/*
+ * Get sta info either from the specified interface
+ * or from one of its vlans
+ */
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+                                  const u8 *addr)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct sta_info *sta;
+
+        sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
+        while (sta) {
+                if ((sta->sdata == sdata ||
+                     sta->sdata->bss == sdata->bss) &&
+                    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+                        break;
+                sta = rcu_dereference(sta->hnext);
+        }
+        return sta;
+}
+
 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
                                      int idx)
 {