rt2x00: Move bssidx calculation into its own function

This will be used by a later patch. No functional changes.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 23 insertions, 9 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index f82bfeb79ebb..d454ec8f5c6f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -1226,6 +1226,12 @@ static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 
 /*
+ * Utility functions.
+ */
+u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
+                         struct ieee80211_vif *vif);
+
+/*
  * Interrupt context handlers.
  */
 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 92ff6a72a2bb..634b084a6527 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -33,6 +33,22 @@
 #include "rt2x00lib.h"
 
 /*
+ * Utility functions.
+ */
+u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
+                         struct ieee80211_vif *vif)
+{
+        /*
+         * When in STA mode, bssidx is always 0 otherwise local_address[5]
+         * contains the bss number, see BSS_ID_MASK comments for details.
+         */
+        if (rt2x00dev->intf_sta_count)
+                return 0;
+        return vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1);
+}
+EXPORT_SYMBOL_GPL(rt2x00lib_get_bssidx);
+
+/*
  * Radio control handlers.
  */
 int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 4ccf23805973..9db9378820bf 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -504,15 +504,7 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 
         memset(&crypto, 0, sizeof(crypto));
 
-        /*
-         * When in STA mode, bssidx is always 0 otherwise local_address[5]
-         * contains the bss number, see BSS_ID_MASK comments for details.
-         */
-        if (rt2x00dev->intf_sta_count)
-                crypto.bssidx = 0;
-        else
-                crypto.bssidx = vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1);
-
+        crypto.bssidx = rt2x00lib_get_bssidx(rt2x00dev, vif);
         crypto.cipher = rt2x00crypto_key_to_cipher(key);
         if (crypto.cipher == CIPHER_NONE)
                 return -EOPNOTSUPP;