Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[pandora-kernel.git] / net / mac80211 / sta_info.h

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index b4810f6..c820823 100644 (file)
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -403,9 +403,34 @@ static inline u32 get_sta_flags(struct sta_info *sta)
 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
 
 /*
- * Get a STA info, must have be under RCU read lock.
+ * Get a STA info, must be under RCU read lock.
  */
-struct sta_info *sta_info_get(struct ieee80211_local *local, const u8 *addr);
+struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
+                             const u8 *addr);
+
+static inline
+void for_each_sta_info_type_check(struct ieee80211_local *local,
+                                 const u8 *addr,
+                                 struct sta_info *sta,
+                                 struct sta_info *nxt)
+{
+}
+
+#define for_each_sta_info(local, _addr, sta, nxt)                      \
+       for (   /* initialise loop */                                   \
+               sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\
+               nxt = sta ? rcu_dereference(sta->hnext) : NULL;         \
+               /* typecheck */                                         \
+               for_each_sta_info_type_check(local, (_addr), sta, nxt), \
+               /* continue condition */                                \
+               sta;                                                    \
+               /* advance loop */                                      \
+               sta = nxt,                                              \
+               nxt = sta ? rcu_dereference(sta->hnext) : NULL          \
+            )                                                          \
+       /* compare address and run code only if it matches */           \
+       if (memcmp(sta->sta.addr, (_addr), ETH_ALEN) == 0)
+
 /*
  * Get STA info by index, BROKEN!
  */