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, 3 insertions, 3 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 7a4ff02af261..3cf011fc97f4 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -489,12 +489,12 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
                         if (ieee80211_has_tods(hdr->frame_control) ||
                                 !ieee80211_has_fromds(hdr->frame_control))
                                 return RX_DROP_MONITOR;
-                        if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0)
+                        if (compare_ether_addr(hdr->addr3, dev_addr) == 0)
                                 return RX_DROP_MONITOR;
                 } else {
                         if (!ieee80211_has_a4(hdr->frame_control))
                                 return RX_DROP_MONITOR;
-                        if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0)
+                        if (compare_ether_addr(hdr->addr4, dev_addr) == 0)
                                 return RX_DROP_MONITOR;
                 }
         }
@@ -2336,7 +2336,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                         if (sdata->vif.type != NL80211_IFTYPE_STATION)
                                 break;
 
-                        if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN))
+                        if (compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid))
                                 break;
 
                         goto queue;