diff --git a/src/ap/ap_drv_ops.c b/src/ap/ap_drv_ops.c
index c217d9b245..0f5e829ffb 100644
--- a/src/ap/ap_drv_ops.c
+++ b/src/ap/ap_drv_ops.c
@@ -714,7 +714,7 @@ int hostapd_drv_send_mlme(struct hostapd_data *hapd,
 	if (!hapd->driver || !hapd->driver->send_mlme || !hapd->drv_priv)
 		return 0;
 	return hapd->driver->send_mlme(hapd->drv_priv, msg, len, noack, 0,
-				       csa_offs, csa_offs_len, no_encrypt);
+				       csa_offs, csa_offs_len, no_encrypt, 0);
 }
 
 
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 48dd3fe525..fcd50ca12a 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -2713,11 +2713,13 @@ struct wpa_driver_ops {
 	 * @csa_offs_len: Number of elements in csa_offs
 	 * @no_encrypt: Do not encrypt frame even if appropriate key exists
 	 *	(used only for testing purposes)
+	 * @wait: Time to wait off-channel for a response (in ms), or zero
 	 * Returns: 0 on success, -1 on failure
 	 */
 	int (*send_mlme)(void *priv, const u8 *data, size_t data_len,
 			 int noack, unsigned int freq, const u16 *csa_offs,
-			 size_t csa_offs_len, int no_encrypt);
+			 size_t csa_offs_len, int no_encrypt,
+			 unsigned int wait);
 
 	/**
 	 * update_ft_ies - Update FT (IEEE 802.11r) IEs
diff --git a/src/drivers/driver_hostap.c b/src/drivers/driver_hostap.c
index cfc52c7f3a..f827d21913 100644
--- a/src/drivers/driver_hostap.c
+++ b/src/drivers/driver_hostap.c
@@ -264,7 +264,7 @@ static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len, int noack,
 			    unsigned int freq,
 			    const u16 *csa_offs, size_t csa_offs_len,
-			    int no_encrypt)
+			    int no_encrypt, unsigned int wait_time_ms)
 {
 	struct hostap_driver_data *drv = priv;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
@@ -313,7 +313,7 @@ static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
 	pos += 2;
 	memcpy(pos, data, data_len);
 
-	res = hostap_send_mlme(drv, (u8 *) hdr, len, 0, 0, NULL, 0, 0);
+	res = hostap_send_mlme(drv, (u8 *) hdr, len, 0, 0, NULL, 0, 0, 0);
 	if (res < 0) {
 		wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
 			   "failed: %d (%s)",
@@ -1173,7 +1173,7 @@ static void wpa_driver_hostap_poll_client(void *priv, const u8 *own_addr,
 	os_memcpy(hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 	os_memcpy(hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 
-	hostap_send_mlme(priv, (u8 *) &hdr, sizeof(hdr), 0, 0, NULL, 0, 0);
+	hostap_send_mlme(priv, (u8 *)&hdr, sizeof(hdr), 0, 0, NULL, 0, 0, 0);
 }
 
 
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 438fc16252..58b1265fe6 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -8843,11 +8843,11 @@ static int driver_nl80211_send_mlme(void *priv, const u8 *data,
 				    size_t data_len, int noack,
 				    unsigned int freq,
 				    const u16 *csa_offs, size_t csa_offs_len,
-				    int no_encrypt)
+				    int no_encrypt, unsigned int wait)
 {
 	struct i802_bss *bss = priv;
 	return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
-					    freq, 0, 0, 0, csa_offs,
+					    freq, 0, 0, wait, csa_offs,
 					    csa_offs_len, no_encrypt);
 }
 
diff --git a/wpa_supplicant/driver_i.h b/wpa_supplicant/driver_i.h
index 45b62bdea2..d3fb587079 100644
--- a/wpa_supplicant/driver_i.h
+++ b/wpa_supplicant/driver_i.h
@@ -312,12 +312,12 @@ static inline int wpa_drv_set_country(struct wpa_supplicant *wpa_s,
 
 static inline int wpa_drv_send_mlme(struct wpa_supplicant *wpa_s,
 				    const u8 *data, size_t data_len, int noack,
-				    unsigned int freq)
+				    unsigned int freq, unsigned int wait)
 {
 	if (wpa_s->driver->send_mlme)
 		return wpa_s->driver->send_mlme(wpa_s->drv_priv,
 						data, data_len, noack,
-						freq, NULL, 0, 0);
+						freq, NULL, 0, 0, wait);
 	return -1;
 }
 
diff --git a/wpa_supplicant/ibss_rsn.c b/wpa_supplicant/ibss_rsn.c
index ea909a91c8..02e63904c5 100644
--- a/wpa_supplicant/ibss_rsn.c
+++ b/wpa_supplicant/ibss_rsn.c
@@ -520,7 +520,7 @@ static int ibss_rsn_send_auth(struct ibss_rsn *ibss_rsn, const u8 *da, int seq)
 	wpa_printf(MSG_DEBUG, "RSN: IBSS TX Auth frame (SEQ %d) to " MACSTR,
 		   seq, MAC2STR(da));
 
-	return wpa_drv_send_mlme(wpa_s, (u8 *) &auth, auth_length, 0, 0);
+	return wpa_drv_send_mlme(wpa_s, (u8 *) &auth, auth_length, 0, 0, 0);
 }
 
 
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index 41d50f3979..e86c082b36 100644
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -2691,7 +2691,7 @@ static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
 {
 	struct wpa_supplicant *wpa_s = ctx;
 	return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
-				 freq);
+				 freq, 0);
 }
 
 
diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
index 81151a7fb7..6bec3ad930 100644
--- a/wpa_supplicant/sme.c
+++ b/wpa_supplicant/sme.c
@@ -1015,7 +1015,7 @@ static int sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
 				    bssid, 1, wpa_s->sme.seq_num,
 				    use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
 				    WLAN_STATUS_SUCCESS);
-	wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
+	wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0, 0);
 	wpabuf_free(resp);
 	wpabuf_free(buf);
 
@@ -1085,7 +1085,7 @@ static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
 	sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
 				    da, 2, wpa_s->sme.seq_num,
 				    WLAN_STATUS_SUCCESS);
-	wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
+	wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0, 0);
 	wpabuf_free(resp);
 	wpabuf_free(buf);
 }
