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/status.c b/net/mac80211/status.c
index c928e4a4effd..5f8f89e89d6b 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/export.h>
+#include <linux/etherdevice.h>
 #include <net/mac80211.h>
 #include <asm/unaligned.h>
 #include "ieee80211_i.h"
@@ -377,7 +378,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 
         for_each_sta_info(local, hdr->addr1, sta, tmp) {
                 /* skip wrong virtual interface */
-                if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN))
+                if (compare_ether_addr(hdr->addr2, sta->sdata->vif.addr))
                         continue;
 
                 if (info->flags & IEEE80211_TX_STATUS_EOSP)