Index: head/sys/dev/ath/if_ath_keycache.h
===================================================================
--- head/sys/dev/ath/if_ath_keycache.h
+++ head/sys/dev/ath/if_ath_keycache.h
@@ -35,8 +35,7 @@
 extern int ath_key_alloc(struct ieee80211vap *, struct ieee80211_key *,
     ieee80211_keyix *, ieee80211_keyix *);
 extern int ath_key_delete(struct ieee80211vap *, const struct ieee80211_key *);
-extern int ath_key_set(struct ieee80211vap *, const struct ieee80211_key *,
-    const u_int8_t mac[IEEE80211_ADDR_LEN]);
+extern int ath_key_set(struct ieee80211vap *, const struct ieee80211_key *);
 extern int ath_keyset(struct ath_softc *sc, struct ieee80211vap *vap,
     const struct ieee80211_key *k, struct ieee80211_node *bss);
 
Index: head/sys/dev/ath/if_ath_keycache.c
===================================================================
--- head/sys/dev/ath/if_ath_keycache.c
+++ head/sys/dev/ath/if_ath_keycache.c
@@ -527,8 +527,7 @@
  * slot(s) must already have been allocated by ath_key_alloc.
  */
 int
-ath_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
-	const u_int8_t mac[IEEE80211_ADDR_LEN])
+ath_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
 {
 	struct ath_softc *sc = vap->iv_ic->ic_softc;
 
Index: head/sys/dev/if_ndis/if_ndis.c
===================================================================
--- head/sys/dev/if_ndis/if_ndis.c
+++ head/sys/dev/if_ndis/if_ndis.c
@@ -194,7 +194,7 @@
 static int ndis_set_cipher	(struct ndis_softc *, int);
 static int ndis_set_wpa		(struct ndis_softc *, void *, int);
 static int ndis_add_key		(struct ieee80211vap *,
-	const struct ieee80211_key *, const u_int8_t []);
+	const struct ieee80211_key *);
 static int ndis_del_key		(struct ieee80211vap *,
 	const struct ieee80211_key *);
 static void ndis_setmulti	(struct ndis_softc *);
@@ -3070,8 +3070,7 @@
  * set after initial authentication with the AP.
  */
 static int
-ndis_add_key(struct ieee80211vap *vap, const struct ieee80211_key *key,
-    const uint8_t mac[IEEE80211_ADDR_LEN])
+ndis_add_key(struct ieee80211vap *vap, const struct ieee80211_key *key)
 {
 	struct ndis_softc	*sc = vap->iv_ic->ic_softc;
 	ndis_80211_key		rkey;
Index: head/sys/dev/mwl/if_mwl.c
===================================================================
--- head/sys/dev/mwl/if_mwl.c
+++ head/sys/dev/mwl/if_mwl.c
@@ -111,7 +111,10 @@
 			ieee80211_keyix *, ieee80211_keyix *);
 static int	mwl_key_delete(struct ieee80211vap *,
 			const struct ieee80211_key *);
-static int	mwl_key_set(struct ieee80211vap *, const struct ieee80211_key *,
+static int	mwl_key_set(struct ieee80211vap *,
+			const struct ieee80211_key *);
+static int	_mwl_key_set(struct ieee80211vap *,
+			const struct ieee80211_key *,
 			const uint8_t mac[IEEE80211_ADDR_LEN]);
 static int	mwl_mode_init(struct mwl_softc *);
 static void	mwl_update_mcast(struct ieee80211com *);
@@ -1604,7 +1607,13 @@
  * slot(s) must already have been allocated by mwl_key_alloc.
  */
 static int
-mwl_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
+mwl_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
+{
+	return (_mwl_key_set(vap, k, k->wk_macaddr));
+}
+
+static int
+_mwl_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
 	const uint8_t mac[IEEE80211_ADDR_LEN])
 {
 #define	GRPXMIT	(IEEE80211_KEY_XMIT | IEEE80211_KEY_GROUP)
@@ -3911,7 +3920,8 @@
 		IEEE80211_F_PRIVACY &&
 	    vap->iv_def_txkey != IEEE80211_KEYIX_NONE &&
 	    vap->iv_nw_keys[vap->iv_def_txkey].wk_keyix != IEEE80211_KEYIX_NONE)
-		(void) mwl_key_set(vap, &vap->iv_nw_keys[vap->iv_def_txkey], mac);
+		(void) _mwl_key_set(vap, &vap->iv_nw_keys[vap->iv_def_txkey],
+				    mac);
 }
 
 static int
@@ -3956,7 +3966,7 @@
 	wk = &vap->iv_nw_keys[0];
 	for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID]; wk++)
 		if (wk->wk_keyix != IEEE80211_KEYIX_NONE)
-			(void) mwl_key_set(vap, wk, vap->iv_myaddr);
+			(void) _mwl_key_set(vap, wk, vap->iv_myaddr);
 }
 
 /*
Index: head/sys/dev/usb/wlan/if_rum.c
===================================================================
--- head/sys/dev/usb/wlan/if_rum.c
+++ head/sys/dev/usb/wlan/if_rum.c
@@ -249,8 +249,7 @@
 			    struct ieee80211_key *, ieee80211_keyix *,
 			    ieee80211_keyix *);
 static int		rum_key_set(struct ieee80211vap *,
-			    const struct ieee80211_key *,
-			    const uint8_t mac[IEEE80211_ADDR_LEN]);
+			    const struct ieee80211_key *);
 static int		rum_key_delete(struct ieee80211vap *,
 			    const struct ieee80211_key *);
 static int		rum_raw_xmit(struct ieee80211_node *, struct mbuf *,
@@ -2659,8 +2658,7 @@
 }
 
 static int
-rum_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
-    const uint8_t mac[IEEE80211_ADDR_LEN])
+rum_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
 {
 	struct rum_softc *sc = vap->iv_ic->ic_softc;
 	int group;
Index: head/sys/dev/usb/wlan/if_run.c
===================================================================
--- head/sys/dev/usb/wlan/if_run.c
+++ head/sys/dev/usb/wlan/if_run.c
@@ -382,8 +382,7 @@
 static int	run_wme_update(struct ieee80211com *);
 static void	run_wme_update_cb(void *);
 static void	run_key_set_cb(void *);
-static int	run_key_set(struct ieee80211vap *, struct ieee80211_key *,
-		    const uint8_t mac[IEEE80211_ADDR_LEN]);
+static int	run_key_set(struct ieee80211vap *, struct ieee80211_key *);
 static void	run_key_delete_cb(void *);
 static int	run_key_delete(struct ieee80211vap *, struct ieee80211_key *);
 static void	run_ratectl_to(void *);
@@ -2361,8 +2360,7 @@
  * return 0 on error
  */
 static int
-run_key_set(struct ieee80211vap *vap, struct ieee80211_key *k,
-		const uint8_t mac[IEEE80211_ADDR_LEN])
+run_key_set(struct ieee80211vap *vap, struct ieee80211_key *k)
 {
 	struct ieee80211com *ic = vap->iv_ic;
 	struct run_softc *sc = ic->ic_softc;
@@ -2374,7 +2372,7 @@
 	sc->cmdq[i].arg0 = NULL;
 	sc->cmdq[i].arg1 = vap;
 	sc->cmdq[i].k = k;
-	IEEE80211_ADDR_COPY(sc->cmdq[i].mac, mac);
+	IEEE80211_ADDR_COPY(sc->cmdq[i].mac, k->wk_macaddr);
 	ieee80211_runtask(ic, &sc->cmdq_task);
 
 	/*
Index: head/sys/dev/wpi/if_wpi.c
===================================================================
--- head/sys/dev/wpi/if_wpi.c
+++ head/sys/dev/wpi/if_wpi.c
@@ -254,8 +254,7 @@
 static int	wpi_process_key(struct ieee80211vap *,
 		    const struct ieee80211_key *, int);
 static int	wpi_key_set(struct ieee80211vap *,
-		    const struct ieee80211_key *,
-		    const uint8_t mac[IEEE80211_ADDR_LEN]);
+		    const struct ieee80211_key *);
 static int	wpi_key_delete(struct ieee80211vap *,
 		    const struct ieee80211_key *);
 static int	wpi_post_alive(struct wpi_softc *);
@@ -4799,8 +4798,7 @@
 }
 
 static int
-wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
-    const uint8_t mac[IEEE80211_ADDR_LEN])
+wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
 {
 	return wpi_process_key(vap, k, 1);
 }
Index: head/sys/net80211/ieee80211_crypto.c
===================================================================
--- head/sys/net80211/ieee80211_crypto.c
+++ head/sys/net80211/ieee80211_crypto.c
@@ -89,8 +89,7 @@
 	return 1;
 }
 static 	int
-null_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k,
-	const uint8_t mac[IEEE80211_ADDR_LEN])
+null_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
 {
 	return 1;
 }
@@ -132,7 +131,7 @@
 static __inline int
 dev_key_set(struct ieee80211vap *vap, const struct ieee80211_key *key)
 {
-	return vap->iv_key_set(vap, key, key->wk_macaddr);
+	return vap->iv_key_set(vap, key);
 }
 
 /*
Index: head/sys/net80211/ieee80211_var.h
===================================================================
--- head/sys/net80211/ieee80211_var.h
+++ head/sys/net80211/ieee80211_var.h
@@ -461,8 +461,7 @@
 	int			(*iv_key_delete)(struct ieee80211vap *, 
 				    const struct ieee80211_key *);
 	int			(*iv_key_set)(struct ieee80211vap *,
-				    const struct ieee80211_key *,
-				    const uint8_t mac[IEEE80211_ADDR_LEN]);
+				    const struct ieee80211_key *);
 	void			(*iv_key_update_begin)(struct ieee80211vap *);
 	void			(*iv_key_update_end)(struct ieee80211vap *);