diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index 96e8769..841925f 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -14,6 +14,8 @@
 #ifndef __DM9000_PLATFORM_DATA
 #define __DM9000_PLATFORM_DATA __FILE__
 
+#include <linux/if_ether.h>
+
 /* IO control flags */
 
 #define DM9000_PLATF_8BITONLY	(0x0001)
@@ -27,7 +29,7 @@
 
 struct dm9000_plat_data {
 	unsigned int	flags;
-	unsigned char	dev_addr[6];
+	unsigned char	dev_addr[ETH_ALEN];
 
 	/* allow replacement IO routines */
 
diff --git a/include/linux/fs_enet_pd.h b/include/linux/fs_enet_pd.h
index 51b7934..343d82a 100644
--- a/include/linux/fs_enet_pd.h
+++ b/include/linux/fs_enet_pd.h
@@ -18,6 +18,7 @@
 
 #include <linux/string.h>
 #include <linux/of_mdio.h>
+#include <linux/if_ether.h>
 #include <asm/types.h>
 
 #define FS_ENET_NAME	"fs_enet"
@@ -135,7 +136,7 @@
 	const struct fs_mii_bus_info *bus_info;
 
 	int rx_ring, tx_ring;	/* number of buffers on rx     */
-	__u8 macaddr[6];	/* mac address                 */
+	__u8 macaddr[ETH_ALEN];	/* mac address                 */
 	int rx_copybreak;	/* limit we copy small frames  */
 	int use_napi;		/* use NAPI                    */
 	int napi_weight;	/* NAPI weight                 */
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index b0dc87a..4e101af 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -16,6 +16,7 @@
 #define LINUX_IEEE80211_H
 
 #include <linux/types.h>
+#include <linux/if_ether.h>
 #include <asm/byteorder.h>
 
 /*
@@ -209,28 +210,28 @@
 struct ieee80211_hdr {
 	__le16 frame_control;
 	__le16 duration_id;
-	u8 addr1[6];
-	u8 addr2[6];
-	u8 addr3[6];
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
 	__le16 seq_ctrl;
-	u8 addr4[6];
+	u8 addr4[ETH_ALEN];
 } __packed __aligned(2);
 
 struct ieee80211_hdr_3addr {
 	__le16 frame_control;
 	__le16 duration_id;
-	u8 addr1[6];
-	u8 addr2[6];
-	u8 addr3[6];
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
 	__le16 seq_ctrl;
 } __packed __aligned(2);
 
 struct ieee80211_qos_hdr {
 	__le16 frame_control;
 	__le16 duration_id;
-	u8 addr1[6];
-	u8 addr2[6];
-	u8 addr3[6];
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
 	__le16 seq_ctrl;
 	__le16 qos_ctrl;
 } __packed __aligned(2);
@@ -608,8 +609,8 @@
 	u8 flags;
 	u8 ttl;
 	__le32 seqnum;
-	u8 eaddr1[6];
-	u8 eaddr2[6];
+	u8 eaddr1[ETH_ALEN];
+	u8 eaddr2[ETH_ALEN];
 } __packed __aligned(2);
 
 /* Mesh flags */
@@ -758,7 +759,7 @@
 	u8 rann_flags;
 	u8 rann_hopcount;
 	u8 rann_ttl;
-	u8 rann_addr[6];
+	u8 rann_addr[ETH_ALEN];
 	__le32 rann_seq;
 	__le32 rann_interval;
 	__le32 rann_metric;
@@ -802,9 +803,9 @@
 struct ieee80211_mgmt {
 	__le16 frame_control;
 	__le16 duration;
-	u8 da[6];
-	u8 sa[6];
-	u8 bssid[6];
+	u8 da[ETH_ALEN];
+	u8 sa[ETH_ALEN];
+	u8 bssid[ETH_ALEN];
 	__le16 seq_ctrl;
 	union {
 		struct {
@@ -833,7 +834,7 @@
 		struct {
 			__le16 capab_info;
 			__le16 listen_interval;
-			u8 current_ap[6];
+			u8 current_ap[ETH_ALEN];
 			/* followed by SSID and Supported rates */
 			u8 variable[0];
 		} __packed reassoc_req;
@@ -966,21 +967,21 @@
 struct ieee80211_rts {
 	__le16 frame_control;
 	__le16 duration;
-	u8 ra[6];
-	u8 ta[6];
+	u8 ra[ETH_ALEN];
+	u8 ta[ETH_ALEN];
 } __packed __aligned(2);
 
 struct ieee80211_cts {
 	__le16 frame_control;
 	__le16 duration;
-	u8 ra[6];
+	u8 ra[ETH_ALEN];
 } __packed __aligned(2);
 
 struct ieee80211_pspoll {
 	__le16 frame_control;
 	__le16 aid;
-	u8 bssid[6];
-	u8 ta[6];
+	u8 bssid[ETH_ALEN];
+	u8 ta[ETH_ALEN];
 } __packed __aligned(2);
 
 /* TDLS */
@@ -989,14 +990,14 @@
 struct ieee80211_tdls_lnkie {
 	u8 ie_type; /* Link Identifier IE */
 	u8 ie_len;
-	u8 bssid[6];
-	u8 init_sta[6];
-	u8 resp_sta[6];
+	u8 bssid[ETH_ALEN];
+	u8 init_sta[ETH_ALEN];
+	u8 resp_sta[ETH_ALEN];
 } __packed;
 
 struct ieee80211_tdls_data {
-	u8 da[6];
-	u8 sa[6];
+	u8 da[ETH_ALEN];
+	u8 sa[ETH_ALEN];
 	__be16 ether_type;
 	u8 payload_type;
 	u8 category;
@@ -1090,8 +1091,8 @@
 struct ieee80211_bar {
 	__le16 frame_control;
 	__le16 duration;
-	__u8 ra[6];
-	__u8 ta[6];
+	__u8 ra[ETH_ALEN];
+	__u8 ta[ETH_ALEN];
 	__le16 control;
 	__le16 start_seq_num;
 } __packed;
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 6aebdfe..09ef2f4 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -33,6 +33,7 @@
 #ifndef MLX4_DEVICE_H
 #define MLX4_DEVICE_H
 
+#include <linux/if_ether.h>
 #include <linux/pci.h>
 #include <linux/completion.h>
 #include <linux/radix-tree.h>
@@ -620,7 +621,7 @@
 	u8		dgid[16];
 	u32		reserved4[2];
 	__be16		vlan;
-	u8		mac[6];
+	u8		mac[ETH_ALEN];
 };
 
 union mlx4_ext_av {
@@ -914,10 +915,10 @@
 };
 
 struct mlx4_spec_eth {
-	u8	dst_mac[6];
-	u8	dst_mac_msk[6];
-	u8	src_mac[6];
-	u8	src_mac_msk[6];
+	u8	dst_mac[ETH_ALEN];
+	u8	dst_mac_msk[ETH_ALEN];
+	u8	src_mac[ETH_ALEN];
+	u8	src_mac_msk[ETH_ALEN];
 	u8	ether_type_enable;
 	__be16	ether_type;
 	__be16	vlan_id_msk;
diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h
index 262deac..6d351473 100644
--- a/include/linux/mlx4/qp.h
+++ b/include/linux/mlx4/qp.h
@@ -34,6 +34,7 @@
 #define MLX4_QP_H
 
 #include <linux/types.h>
+#include <linux/if_ether.h>
 
 #include <linux/mlx4/device.h>
 
@@ -143,7 +144,7 @@
 	u8			feup;
 	u8			fvl_rx;
 	u8			reserved4[2];
-	u8			dmac[6];
+	u8			dmac[ETH_ALEN];
 };
 
 enum { /* fl */
@@ -318,7 +319,7 @@
 	__be32			dqpn;
 	__be32			qkey;
 	__be16			vlan;
-	u8			mac[6];
+	u8			mac[ETH_ALEN];
 };
 
 struct mlx4_wqe_lso_seg {
diff --git a/include/linux/mv643xx_eth.h b/include/linux/mv643xx_eth.h
index 6e8215b..61a0da3 100644
--- a/include/linux/mv643xx_eth.h
+++ b/include/linux/mv643xx_eth.h
@@ -6,6 +6,7 @@
 #define __LINUX_MV643XX_ETH_H
 
 #include <linux/mbus.h>
+#include <linux/if_ether.h>
 
 #define MV643XX_ETH_SHARED_NAME		"mv643xx_eth"
 #define MV643XX_ETH_NAME		"mv643xx_eth_port"
@@ -48,7 +49,7 @@
 	 * Use this MAC address if it is valid, overriding the
 	 * address that is already in the hardware.
 	 */
-	u8			mac_addr[6];
+	u8			mac_addr[ETH_ALEN];
 
 	/*
 	 * If speed is 0, autonegotiation is enabled.
diff --git a/include/linux/sh_eth.h b/include/linux/sh_eth.h
index fc30571..6205eeb 100644
--- a/include/linux/sh_eth.h
+++ b/include/linux/sh_eth.h
@@ -2,6 +2,7 @@
 #define __ASM_SH_ETH_H__
 
 #include <linux/phy.h>
+#include <linux/if_ether.h>
 
 enum {EDMAC_LITTLE_ENDIAN, EDMAC_BIG_ENDIAN};
 enum {
@@ -18,7 +19,7 @@
 	phy_interface_t phy_interface;
 	void (*set_mdio_gate)(void *addr);
 
-	unsigned char mac_addr[6];
+	unsigned char mac_addr[ETH_ALEN];
 	unsigned no_ether_link:1;
 	unsigned ether_link_active_low:1;
 	unsigned needs_init:1;
diff --git a/include/linux/smsc911x.h b/include/linux/smsc911x.h
index 4dde70e..eec3efd 100644
--- a/include/linux/smsc911x.h
+++ b/include/linux/smsc911x.h
@@ -22,6 +22,7 @@
 #define __LINUX_SMSC911X_H__
 
 #include <linux/phy.h>
+#include <linux/if_ether.h>
 
 /* platform_device configuration data, should be assigned to
  * the platform_device's dev.platform_data */
@@ -31,7 +32,7 @@
 	unsigned int flags;
 	unsigned int shift;
 	phy_interface_t phy_interface;
-	unsigned char mac[6];
+	unsigned char mac[ETH_ALEN];
 };
 
 /* Constants for platform_device irq polarity configuration */
diff --git a/include/linux/uwb/spec.h b/include/linux/uwb/spec.h
index b52e44f..0df24bf 100644
--- a/include/linux/uwb/spec.h
+++ b/include/linux/uwb/spec.h
@@ -32,6 +32,7 @@
 
 #include <linux/types.h>
 #include <linux/bitmap.h>
+#include <linux/if_ether.h>
 
 #define i1480_FW 0x00000303
 /* #define i1480_FW 0x00000302 */
@@ -130,7 +131,7 @@
  * it is also used to define headers sent down and up the wire/radio).
  */
 struct uwb_mac_addr {
-	u8 data[6];
+	u8 data[ETH_ALEN];
 } __attribute__((packed));
 
 
@@ -568,7 +569,7 @@
 /* Device Address Management event. [WHCI] section 3.1.3.2. */
 struct uwb_rc_evt_dev_addr_mgmt {
 	struct uwb_rceb rceb;
-	u8 baAddr[6];
+	u8 baAddr[ETH_ALEN];
 	u8 bResultCode;
 } __attribute__((packed));