diff --git a/hostapd/beacon.c b/hostapd/beacon.c
index 2e0d3e3a8..1df875242 100644
--- a/hostapd/beacon.c
+++ b/hostapd/beacon.c
@@ -312,7 +312,7 @@ void handle_probe_req(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
 	}
 #endif /* CONFIG_WPS */
 
-	if (hostapd_send_mgmt_frame(hapd, resp, pos - (u8 *) resp, 0) < 0)
+	if (hostapd_send_mgmt_frame(hapd, resp, pos - (u8 *) resp) < 0)
 		perror("handle_probe_req: send");
 
 	os_free(resp);
diff --git a/hostapd/driver_i.h b/hostapd/driver_i.h
index 81be2278e..170c3b3e8 100644
--- a/hostapd/driver_i.h
+++ b/hostapd/driver_i.h
@@ -175,12 +175,11 @@ hostapd_set_ssid(struct hostapd_data *hapd, const u8 *buf, size_t len)
 }
 
 static inline int
-hostapd_send_mgmt_frame(struct hostapd_data *hapd, const void *msg, size_t len,
-			int flags)
+hostapd_send_mgmt_frame(struct hostapd_data *hapd, const void *msg, size_t len)
 {
 	if (hapd->driver == NULL || hapd->driver->send_mgmt_frame == NULL)
 		return 0;
-	return hapd->driver->send_mgmt_frame(hapd->drv_priv, msg, len, flags);
+	return hapd->driver->send_mgmt_frame(hapd->drv_priv, msg, len);
 }
 
 static inline int
diff --git a/hostapd/hostapd.c b/hostapd/hostapd.c
index 0ed72f8f2..2f5a888c3 100644
--- a/hostapd/hostapd.c
+++ b/hostapd/hostapd.c
@@ -816,7 +816,7 @@ static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 	os_memcpy(&m->u, data, data_len);
 
-	res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
+	res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen);
 	os_free(m);
 	return res;
 }
diff --git a/hostapd/ieee802_11.c b/hostapd/ieee802_11.c
index 759d9ffd6..f60c72d05 100644
--- a/hostapd/ieee802_11.c
+++ b/hostapd/ieee802_11.c
@@ -357,7 +357,7 @@ void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
 	os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 	mgmt.u.deauth.reason_code = host_to_le16(reason);
 	if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
-				    sizeof(mgmt.u.deauth), 0) < 0)
+				    sizeof(mgmt.u.deauth)) < 0)
 		perror("ieee802_11_send_deauth: send");
 }
 
@@ -452,7 +452,7 @@ static void send_auth_reply(struct hostapd_data *hapd,
 		   " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 		   MAC2STR(dst), auth_alg, auth_transaction,
 		   resp, (unsigned long) ies_len);
-	if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
+	if (hostapd_send_mgmt_frame(hapd, reply, rlen) < 0)
 		perror("send_auth_reply: send");
 
 	os_free(buf);
@@ -1170,7 +1170,7 @@ static void handle_assoc(struct hostapd_data *hapd,
 		send_len += p - reply->u.assoc_resp.variable;
 	}
 
-	if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
+	if (hostapd_send_mgmt_frame(hapd, reply, send_len) < 0)
 		perror("handle_assoc: send");
 }
 
@@ -1298,7 +1298,7 @@ void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
 	os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
 		  WLAN_SA_QUERY_TR_ID_LEN);
 	end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
-	if (hostapd_send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt, 0) < 0)
+	if (hostapd_send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
 		perror("ieee802_11_send_sa_query_req: send");
 }
 
@@ -1416,7 +1416,7 @@ static void handle_action(struct hostapd_data *hapd,
 		os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
 		mgmt->u.action.category |= 0x80;
 
-		hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
+		hostapd_send_mgmt_frame(hapd, mgmt, len);
 	}
 }
 
diff --git a/hostapd/sta_info.c b/hostapd/sta_info.c
index cbf556c12..7a22e9298 100644
--- a/hostapd/sta_info.c
+++ b/hostapd/sta_info.c
@@ -314,7 +314,7 @@ void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 			  ETH_ALEN);
 		os_memcpy(hdr.IEEE80211_SA_FROMDS, hapd->own_addr, ETH_ALEN);
 
-		if (hostapd_send_mgmt_frame(hapd, &hdr, sizeof(hdr), 0) < 0)
+		if (hostapd_send_mgmt_frame(hapd, &hdr, sizeof(hdr)) < 0)
 			perror("ap_handle_timer: send");
 #endif /* CONFIG_NATIVE_WINDOWS */
 	} else if (sta->timeout_next != STA_REMOVE) {
diff --git a/hostapd/wme.c b/hostapd/wme.c
index 7f92a0a49..efcbe3714 100644
--- a/hostapd/wme.c
+++ b/hostapd/wme.c
@@ -160,7 +160,7 @@ static void wmm_send_action(struct hostapd_data *hapd, const u8 *addr,
 	os_memcpy(t, tspec, sizeof(struct wmm_tspec_element));
 	len = ((u8 *) (t + 1)) - buf;
 
-	if (hostapd_send_mgmt_frame(hapd, m, len, 0) < 0)
+	if (hostapd_send_mgmt_frame(hapd, m, len) < 0)
 		perror("wmm_send_action: send");
 }
 
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index eee49cbc4..524274868 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1249,8 +1249,7 @@ struct wpa_driver_ops {
 	int (*hapd_set_ssid)(const char *ifname, void *priv, const u8 *buf,
 			     int len);
 	int (*hapd_set_countermeasures)(void *priv, int enabled);
-	int (*send_mgmt_frame)(void *priv, const void *msg, size_t len,
-			       int flags);
+	int (*send_mgmt_frame)(void *priv, const void *msg, size_t len);
 	int (*sta_add)(const char *ifname, void *priv,
 		       struct hostapd_sta_add_params *params);
 	int (*get_inact_sec)(void *priv, const u8 *addr);
diff --git a/src/drivers/driver_hostap.c b/src/drivers/driver_hostap.c
index de2e1cfb1..e22739dfc 100644
--- a/src/drivers/driver_hostap.c
+++ b/src/drivers/driver_hostap.c
@@ -293,8 +293,7 @@ static int hostap_init_sockets(struct hostap_driver_data *drv)
 }
 
 
-static int hostap_send_mgmt_frame(void *priv, const void *msg, size_t len,
-				  int flags)
+static int hostap_send_mgmt_frame(void *priv, const void *msg, size_t len)
 {
 	struct hostap_driver_data *drv = priv;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
@@ -302,7 +301,7 @@ static int hostap_send_mgmt_frame(void *priv, const void *msg, size_t len,
 
 	/* Request TX callback */
 	hdr->frame_control |= host_to_le16(BIT(1));
-	res = send(drv->sock, msg, len, flags);
+	res = send(drv->sock, msg, len, 0);
 	hdr->frame_control &= ~host_to_le16(BIT(1));
 
 	return res;
@@ -342,7 +341,7 @@ static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
 	pos += 2;
 	memcpy(pos, data, data_len);
 
-	res = hostap_send_mgmt_frame(drv, (u8 *) hdr, len, 0);
+	res = hostap_send_mgmt_frame(drv, (u8 *) hdr, len);
 	free(hdr);
 
 	if (res < 0) {
@@ -1147,7 +1146,7 @@ static int hostap_sta_deauth(void *priv, const u8 *addr, int reason)
 	memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
 	mgmt.u.deauth.reason_code = host_to_le16(reason);
 	return hostap_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
-				      sizeof(mgmt.u.deauth), 0);
+				      sizeof(mgmt.u.deauth));
 }
 
 
@@ -1164,7 +1163,7 @@ static int hostap_sta_disassoc(void *priv, const u8 *addr, int reason)
 	memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
 	mgmt.u.disassoc.reason_code = host_to_le16(reason);
 	return  hostap_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
-				       sizeof(mgmt.u.disassoc), 0);
+				       sizeof(mgmt.u.disassoc));
 }
 
 
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 96acef9a2..f5f18c0b5 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -3039,7 +3039,7 @@ static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 
 
 static int i802_send_frame(void *priv, const void *data, size_t len,
-			   int encrypt, int flags)
+			   int encrypt)
 {
 	__u8 rtap_hdr[] = {
 		0x00, 0x00, /* radiotap version */
@@ -3074,11 +3074,10 @@ static int i802_send_frame(void *priv, const void *data, size_t len,
 	if (encrypt)
 		rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 
-	return sendmsg(drv->monitor_sock, &msg, flags);
+	return sendmsg(drv->monitor_sock, &msg, 0);
 }
 
-static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
-				int flags)
+static int i802_send_mgmt_frame(void *priv, const void *data, size_t len)
 {
 	struct ieee80211_mgmt *mgmt;
 	int do_not_encrypt = 0;
@@ -3102,7 +3101,7 @@ static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 			do_not_encrypt = 1;
 	}
 
-	return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
+	return i802_send_frame(priv, data, len, !do_not_encrypt);
 }
 
 /* Set kernel driver on given frequency (MHz) */
@@ -3364,7 +3363,7 @@ static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 	pos += 2;
 	memcpy(pos, data, data_len);
 
-	res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
+	res = i802_send_frame(drv, (u8 *) hdr, len, encrypt);
 	free(hdr);
 
 	if (res < 0) {
@@ -4945,7 +4944,7 @@ static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
 	memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
 	mgmt.u.deauth.reason_code = host_to_le16(reason);
 	return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
-				      sizeof(mgmt.u.deauth), 0);
+				    sizeof(mgmt.u.deauth));
 }
 
 
@@ -4961,8 +4960,8 @@ static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
 	memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
 	memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
 	mgmt.u.disassoc.reason_code = host_to_le16(reason);
-	return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
-				       sizeof(mgmt.u.disassoc), 0);
+	return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
+				    sizeof(mgmt.u.disassoc));
 }
 
 
diff --git a/src/drivers/driver_test.c b/src/drivers/driver_test.c
index 2cbf59183..ab522fcb5 100644
--- a/src/drivers/driver_test.c
+++ b/src/drivers/driver_test.c
@@ -297,8 +297,7 @@ static int test_driver_send_ether(void *priv, const u8 *dst, const u8 *src,
 }
 
 
-static int test_driver_send_mgmt_frame(void *priv, const void *buf,
-				       size_t len, int flags)
+static int test_driver_send_mgmt_frame(void *priv, const void *buf, size_t len)
 {
 	struct test_driver_data *drv = priv;
 	struct msghdr msg;