mac80211: use compare_ether_addr on MAC addresses instead of memcmp

Because of the constant size and guaranteed 16 bit alignment, the inline
compare_ether_addr function is much cheaper than calling memcmp.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 23a97c9dc042..3336d54e5558 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -14,6 +14,7 @@
 #include <linux/if_ether.h>
 #include <linux/workqueue.h>
 #include <linux/average.h>
+#include <linux/etherdevice.h>
 #include "key.h"
 
 /**
@@ -489,7 +490,7 @@ void for_each_sta_info_type_check(struct ieee80211_local *local,
                 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)
+        if (compare_ether_addr(_sta->sta.addr, (_addr)) == 0)
 
 /*
  * Get STA info by index, BROKEN!