mac80211: fix rhashtable conversion

My conversion of the mac80211 station hash table to rhashtable
completely broke the lookup in sta_info_get() as it no longer
took into account the virtual interface. Fix that.

Fixes: 7bedd0cfad4e1 ("mac80211: use rhashtable for station table")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 12971b7..3989317 100644 (file)
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -157,8 +157,24 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
                              const u8 *addr)
 {
        struct ieee80211_local *local = sdata->local;
+       struct sta_info *sta;
+       struct rhash_head *tmp;
+       const struct bucket_table *tbl;
+
+       rcu_read_lock();
+       tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
 
-       return rhashtable_lookup_fast(&local->sta_hash, addr, sta_rht_params);
+       for_each_sta_info(local, tbl, addr, sta, tmp) {
+               if (sta->sdata == sdata) {
+                       rcu_read_unlock();
+                       /* this is safe as the caller must already hold
+                        * another rcu read section or the mutex
+                        */
+                       return sta;
+               }
+       }
+       rcu_read_unlock();
+       return NULL;
 }
 
 /*