diff --git a/hostapd/config.h b/hostapd/config.h
index 6844bd489..2c6e5fe8b 100644
--- a/hostapd/config.h
+++ b/hostapd/config.h
@@ -20,10 +20,6 @@
 #include "ip_addr.h"
 #include "wpa_common.h"
 
-#ifndef IFNAMSIZ
-#define IFNAMSIZ 16
-#endif
-
 typedef u8 macaddr[ETH_ALEN];
 
 struct mac_acl_entry {
diff --git a/hostapd/hostapd.h b/hostapd/hostapd.h
index d0cec3992..511f61792 100644
--- a/hostapd/hostapd.h
+++ b/hostapd/hostapd.h
@@ -20,6 +20,8 @@
 #include "common.h"
 #include "hostapd_defs.h"
 
+#define MAX_VLAN_ID 4094
+
 struct wpa_driver_ops;
 struct wpa_ctrl_dst;
 struct radius_server_data;
diff --git a/hostapd/hostapd_defs.h b/hostapd/hostapd_defs.h
index d18483ae8..5e3ddb2af 100644
--- a/hostapd/hostapd_defs.h
+++ b/hostapd/hostapd_defs.h
@@ -16,62 +16,6 @@
 #ifndef HOSTAPD_DEFS_H
 #define HOSTAPD_DEFS_H
 
-#ifndef ETH_ALEN
-#define ETH_ALEN 6
-#endif
-#ifndef IFNAMSIZ
-#define IFNAMSIZ 16
-#endif
-#ifndef ETH_P_ALL
-#define ETH_P_ALL 0x0003
-#endif
-#ifndef ETH_P_PAE
-#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
-#endif /* ETH_P_PAE */
-#ifndef ETH_P_EAPOL
-#define ETH_P_EAPOL ETH_P_PAE
-#endif /* ETH_P_EAPOL */
-
-#ifndef ETH_P_RRB
-#define ETH_P_RRB 0x890D
-#endif /* ETH_P_RRB */
-
-#ifdef _MSC_VER
-#pragma pack(push, 1)
-#endif /* _MSC_VER */
-
-#define MAX_VLAN_ID 4094
-
-struct ieee8023_hdr {
-	u8 dest[6];
-	u8 src[6];
-	u16 ethertype;
-} STRUCT_PACKED;
-
-
-struct ieee80211_hdr {
-	le16 frame_control;
-	le16 duration_id;
-	u8 addr1[6];
-	u8 addr2[6];
-	u8 addr3[6];
-	le16 seq_ctrl;
-	/* followed by 'u8 addr4[6];' if ToDS and FromDS is set in data frame
-	 */
-} STRUCT_PACKED;
-
-#ifdef _MSC_VER
-#pragma pack(pop)
-#endif /* _MSC_VER */
-
-#define IEEE80211_DA_FROMDS addr1
-#define IEEE80211_BSSID_FROMDS addr2
-#define IEEE80211_SA_FROMDS addr3
-
-#define IEEE80211_HDRLEN (sizeof(struct ieee80211_hdr))
-
-#define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
-
 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
  * frames that might be longer than normal default MTU and they are not
  * fragmented */
diff --git a/hostapd/wpa.h b/hostapd/wpa.h
index 323b48f81..824c2e435 100644
--- a/hostapd/wpa.h
+++ b/hostapd/wpa.h
@@ -45,10 +45,6 @@ struct ft_rrb_frame {
 #define FT_PACKET_R0KH_R1KH_RESP 201
 #define FT_PACKET_R0KH_R1KH_PUSH 202
 
-#ifndef ETH_P_RRB
-#define ETH_P_RRB 0x890D
-#endif /* ETH_P_RRB */
-
 #define FT_R0KH_R1KH_PULL_DATA_LEN 44
 #define FT_R0KH_R1KH_RESP_DATA_LEN 76
 #define FT_R0KH_R1KH_PUSH_DATA_LEN 80
diff --git a/src/common/ieee802_11_defs.h b/src/common/ieee802_11_defs.h
index 1a8701b86..88eb48ebe 100644
--- a/src/common/ieee802_11_defs.h
+++ b/src/common/ieee802_11_defs.h
@@ -237,6 +237,25 @@
 #pragma pack(push, 1)
 #endif /* _MSC_VER */
 
+struct ieee80211_hdr {
+	le16 frame_control;
+	le16 duration_id;
+	u8 addr1[6];
+	u8 addr2[6];
+	u8 addr3[6];
+	le16 seq_ctrl;
+	/* followed by 'u8 addr4[6];' if ToDS and FromDS is set in data frame
+	 */
+} STRUCT_PACKED;
+
+#define IEEE80211_DA_FROMDS addr1
+#define IEEE80211_BSSID_FROMDS addr2
+#define IEEE80211_SA_FROMDS addr3
+
+#define IEEE80211_HDRLEN (sizeof(struct ieee80211_hdr))
+
+#define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
+
 struct ieee80211_mgmt {
 	le16 frame_control;
 	le16 duration;
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 13cf5e478..37f2a4395 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -36,7 +36,6 @@
 #include "radiotap.h"
 #include "radiotap_iter.h"
 
-#include "../../hostapd/hostapd_defs.h"
 #include "../../hostapd/sta_flags.h"
 #endif /* CONFIG_AP || HOSTAPD */
 
diff --git a/src/drivers/driver_roboswitch.c b/src/drivers/driver_roboswitch.c
index e9867b0db..aab6bc00d 100644
--- a/src/drivers/driver_roboswitch.c
+++ b/src/drivers/driver_roboswitch.c
@@ -23,10 +23,6 @@
 #include "driver.h"
 #include "l2_packet/l2_packet.h"
 
-#ifndef ETH_P_EAPOL
-#define ETH_P_EAPOL		0x888e
-#endif
-
 #define ROBO_PHY_ADDR		0x1e	/* RoboSwitch PHY address */
 
 /* MII access registers */
diff --git a/src/drivers/driver_wired.c b/src/drivers/driver_wired.c
index 667ed4bb8..61ec1e5a3 100644
--- a/src/drivers/driver_wired.c
+++ b/src/drivers/driver_wired.c
@@ -30,10 +30,23 @@
 
 #ifdef HOSTAPD
 #include "eloop.h"
-#include "../../hostapd/hostapd_defs.h"
 #include "../../hostapd/sta_info.h"
 #endif /* HOSTAPD */
 
+#ifdef _MSC_VER
+#pragma pack(push, 1)
+#endif /* _MSC_VER */
+
+struct ieee8023_hdr {
+	u8 dest[6];
+	u8 src[6];
+	u16 ethertype;
+} STRUCT_PACKED;
+
+#ifdef _MSC_VER
+#pragma pack(pop)
+#endif /* _MSC_VER */
+
 static const u8 pae_group_addr[ETH_ALEN] =
 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };
 
diff --git a/src/rsn_supp/wpa.h b/src/rsn_supp/wpa.h
index 29a80afeb..cd503bb58 100644
--- a/src/rsn_supp/wpa.h
+++ b/src/rsn_supp/wpa.h
@@ -19,14 +19,6 @@
 #include "eapol_common.h"
 #include "wpa_common.h"
 
-#ifndef ETH_P_EAPOL
-#define ETH_P_EAPOL 0x888e
-#endif
-
-#ifndef ETH_P_RSN_PREAUTH
-#define ETH_P_RSN_PREAUTH 0x88c7
-#endif
-
 struct wpa_sm;
 struct eapol_sm;
 struct wpa_config_blob;
diff --git a/src/utils/common.h b/src/utils/common.h
index d649391e3..71cb8d9e3 100644
--- a/src/utils/common.h
+++ b/src/utils/common.h
@@ -314,6 +314,24 @@ static inline unsigned int wpa_swap_32(unsigned int v)
 #ifndef ETH_ALEN
 #define ETH_ALEN 6
 #endif
+#ifndef IFNAMSIZ
+#define IFNAMSIZ 16
+#endif
+#ifndef ETH_P_ALL
+#define ETH_P_ALL 0x0003
+#endif
+#ifndef ETH_P_PAE
+#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
+#endif /* ETH_P_PAE */
+#ifndef ETH_P_EAPOL
+#define ETH_P_EAPOL ETH_P_PAE
+#endif /* ETH_P_EAPOL */
+#ifndef ETH_P_RSN_PREAUTH
+#define ETH_P_RSN_PREAUTH 0x88c7
+#endif /* ETH_P_RSN_PREAUTH */
+#ifndef ETH_P_RRB
+#define ETH_P_RRB 0x890D
+#endif /* ETH_P_RRB */
 
 
 #ifdef __GNUC__
diff --git a/wpa_supplicant/wpa_priv.c b/wpa_supplicant/wpa_priv.c
index 4d4224cc0..cfab9ea40 100644
--- a/wpa_supplicant/wpa_priv.c
+++ b/wpa_supplicant/wpa_priv.c
@@ -27,14 +27,6 @@
 #include "privsep_commands.h"
 #include "ieee802_11_defs.h"
 
-#ifndef ETH_P_EAPOL
-#define ETH_P_EAPOL 0x888e
-#endif
-
-#ifndef ETH_P_RSN_PREAUTH
-#define ETH_P_RSN_PREAUTH 0x88c7
-#endif
-
 
 struct wpa_priv_interface {
 	struct wpa_priv_interface *next;