openwrt/package/network/services/hostapd/patches/600-ubus_support.patch

From: Felix Fietkau <[email protected]>
Date: Sun, 17 Mar 2013 20:47:18 +0000
Subject: [PATCH] hostapd: initial prototype of an ubus binding

Supports listing, removing and banning clients, and hooking into
probe/assoc/auth requests via object subscribe.

--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -167,6 +167,12 @@ OBJS += ../src/common/hw_features_common
 
 OBJS += ../src/eapol_auth/eapol_auth_sm.o
 
+ifdef CONFIG_UBUS
+CFLAGS += -DUBUS_SUPPORT
+OBJS += ../src/utils/uloop.o
+OBJS += ../src/ap/ubus.o
+LIBS += -lubox -lubus
+endif
 
 ifdef CONFIG_CODE_COVERAGE
 CFLAGS += -O0 -fprofile-arcs -ftest-coverage -U_FORTIFY_SOURCE
--- a/src/ap/airtime_policy.c
+++ b/src/ap/airtime_policy.c
@@ -112,8 +112,14 @@ static void set_sta_weights(struct hosta
 {
 	struct sta_info *sta;
 
-	for (sta = hapd->sta_list; sta; sta = sta->next)
-		sta_set_airtime_weight(hapd, sta, weight);
+	for (sta = hapd->sta_list; sta; sta = sta->next) {
+		unsigned int sta_weight = weight;
+
+		if (sta->dyn_airtime_weight)
+			sta_weight = (weight * sta->dyn_airtime_weight) / 256;
+
+		sta_set_airtime_weight(hapd, sta, sta_weight);
+	}
 }
 
 
@@ -244,7 +250,10 @@ int airtime_policy_new_sta(struct hostap
 	unsigned int weight;
 
 	if (hapd->iconf->airtime_mode == AIRTIME_MODE_STATIC) {
-		weight = get_weight_for_sta(hapd, sta->addr);
+		if (sta->dyn_airtime_weight)
+			weight = sta->dyn_airtime_weight;
+		else
+			weight = get_weight_for_sta(hapd, sta->addr);
 		if (weight)
 			return sta_set_airtime_weight(hapd, sta, weight);
 	}
--- a/src/ap/beacon.c
+++ b/src/ap/beacon.c
@@ -1439,6 +1439,12 @@ void handle_probe_req(struct hostapd_dat
 	int mld_id;
 	u16 links;
 #endif /* CONFIG_IEEE80211BE */
+	struct hostapd_ubus_request req = {
+		.type = HOSTAPD_UBUS_PROBE_REQ,
+		.mgmt_frame = mgmt,
+		.ssi_signal = ssi_signal,
+		.elems = &elems,
+	};
 
 	if (hapd->iconf->rssi_ignore_probe_request && ssi_signal &&
 	    ssi_signal < hapd->iconf->rssi_ignore_probe_request)
@@ -1625,6 +1631,12 @@ void handle_probe_req(struct hostapd_dat
 	}
 #endif /* CONFIG_P2P */
 
+	if (hostapd_ubus_handle_event(hapd, &req)) {
+		wpa_printf(MSG_DEBUG, "Probe request for " MACSTR " rejected by ubus handler.\n",
+		       MAC2STR(mgmt->sa));
+		return;
+	}
+
 	/* TODO: verify that supp_rates contains at least one matching rate
 	 * with AP configuration */
 
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -1243,6 +1243,8 @@ int hostapd_dfs_pre_cac_expired(struct h
 		"freq=%d ht_enabled=%d chan_offset=%d chan_width=%d cf1=%d cf2=%d",
 		freq, ht_enabled, chan_offset, chan_width, cf1, cf2);
 
+	hostapd_ubus_notify_radar_detected(iface, freq, chan_width, cf1, cf2);
+
 	/* Proceed only if DFS is not offloaded to the driver */
 	if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
 		return 0;
--- a/src/ap/drv_callbacks.c
+++ b/src/ap/drv_callbacks.c
@@ -331,6 +331,10 @@ int hostapd_notif_assoc(struct hostapd_d
 #endif /* CONFIG_OWE */
 	bool updated = false;
 	bool driver_acl;
+	struct hostapd_ubus_request req = {
+		.type = HOSTAPD_UBUS_ASSOC_REQ,
+		.addr = addr,
+	};
 
 	if (addr == NULL) {
 		/*
@@ -512,6 +516,12 @@ int hostapd_notif_assoc(struct hostapd_d
 	}
 #endif /* CONFIG_IEEE80211BE */
 
+	if (hostapd_ubus_handle_event(hapd, &req)) {
+		wpa_printf(MSG_DEBUG, "Station " MACSTR " assoc rejected by ubus handler.\n",
+			   MAC2STR(req.addr));
+		goto fail;
+	}
+
 #ifdef CONFIG_P2P
 	if (elems.p2p) {
 		wpabuf_free(sta->p2p_ie);
@@ -1409,6 +1419,7 @@ void hostapd_event_ch_switch(struct host
 
 		wpa_msg(hapd->msg_ctx, MSG_INFO, AP_CSA_FINISHED
 			"freq=%d dfs=%d", freq, is_dfs);
+		hostapd_ubus_notify_csa(hapd, freq);
 	} else if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) {
 		/* Complete AP configuration for the first bring up. */
 		if (is_dfs0 > 0 &&
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -479,6 +479,7 @@ void hostapd_free_hapd_data(struct hosta
 	hapd->beacon_set_done = 0;
 
 	wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
+	hostapd_ubus_free_bss(hapd);
 	accounting_deinit(hapd);
 	hostapd_deinit_wpa(hapd);
 	vlan_deinit(hapd);
@@ -1324,6 +1325,8 @@ static int hostapd_start_beacon(struct h
 	if (hapd->driver && hapd->driver->set_operstate)
 		hapd->driver->set_operstate(hapd->drv_priv, 1);
 
+	hostapd_ubus_add_bss(hapd);
+
 	return 0;
 }
 
@@ -2554,6 +2557,7 @@ static int hostapd_setup_interface_compl
 	if (err)
 		goto fail;
 
+	hostapd_ubus_add_iface(iface);
 	wpa_printf(MSG_DEBUG, "Completing interface initialization");
 	if (iface->freq) {
 #ifdef NEED_AP_MLME
@@ -2781,6 +2785,7 @@ dfs_offload:
 
 fail:
 	wpa_printf(MSG_ERROR, "Interface initialization failed");
+	hostapd_ubus_free_iface(iface);
 
 	if (iface->is_no_ir) {
 		hostapd_set_state(iface, HAPD_IFACE_NO_IR);
@@ -3530,6 +3535,7 @@ void hostapd_interface_deinit_free(struc
 		   (unsigned int) iface->conf->num_bss);
 	driver = iface->bss[0]->driver;
 	drv_priv = iface->bss[0]->drv_priv;
+	hostapd_ubus_free_iface(iface);
 	hostapd_interface_deinit(iface);
 	wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
 		   __func__, driver, drv_priv);
--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -18,6 +18,7 @@
 #include "utils/list.h"
 #include "ap_config.h"
 #include "drivers/driver.h"
+#include "ubus.h"
 
 #define OCE_STA_CFON_ENABLED(hapd) \
 	((hapd->conf->oce & OCE_STA_CFON) && \
@@ -206,6 +207,7 @@ struct hostapd_data {
 	struct hostapd_iface *iface;
 	struct hostapd_config *iconf;
 	struct hostapd_bss_config *conf;
+	struct hostapd_ubus_bss ubus;
 	int interface_added; /* virtual interface added for this BSS */
 	unsigned int started:1;
 	unsigned int disabled:1;
@@ -776,6 +778,7 @@ hostapd_alloc_bss_data(struct hostapd_if
 		       struct hostapd_bss_config *bss);
 int hostapd_setup_interface(struct hostapd_iface *iface);
 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
+void hostapd_set_own_neighbor_report(struct hostapd_data *hapd);
 void hostapd_interface_deinit(struct hostapd_iface *iface);
 void hostapd_interface_free(struct hostapd_iface *iface);
 struct hostapd_iface * hostapd_alloc_iface(void);
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -3134,7 +3134,7 @@ static void handle_auth(struct hostapd_d
 	u16 auth_alg, auth_transaction, status_code;
 	u16 resp = WLAN_STATUS_SUCCESS;
 	struct sta_info *sta = NULL;
-	int res, reply_res;
+	int res, reply_res, ubus_resp;
 	u16 fc;
 	const u8 *challenge = NULL;
 	u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
@@ -3145,6 +3145,11 @@ static void handle_auth(struct hostapd_d
 #ifdef CONFIG_IEEE80211BE
 	bool mld_sta = false;
 #endif /* CONFIG_IEEE80211BE */
+	struct hostapd_ubus_request req = {
+		.type = HOSTAPD_UBUS_AUTH_REQ,
+		.mgmt_frame = mgmt,
+		.ssi_signal = rssi,
+	};
 
 	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 		wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)",
@@ -3341,6 +3346,13 @@ static void handle_auth(struct hostapd_d
 		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 		goto fail;
 	}
+	ubus_resp = hostapd_ubus_handle_event(hapd, &req);
+	if (ubus_resp) {
+		wpa_printf(MSG_DEBUG, "Station " MACSTR " rejected by ubus handler.\n",
+			MAC2STR(mgmt->sa));
+		resp = ubus_resp > 0 ? (u16) ubus_resp : WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
 	if (res == HOSTAPD_ACL_PENDING)
 		return;
 
@@ -5723,7 +5735,7 @@ static void handle_assoc(struct hostapd_
 	int resp = WLAN_STATUS_SUCCESS;
 	u16 reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE;
 	const u8 *pos;
-	int left, i;
+	int left, i, ubus_resp;
 	struct sta_info *sta;
 	u8 *tmp = NULL;
 #ifdef CONFIG_FILS
@@ -5965,6 +5977,11 @@ static void handle_assoc(struct hostapd_
 		left = res;
 	}
 #endif /* CONFIG_FILS */
+	struct hostapd_ubus_request req = {
+		.type = HOSTAPD_UBUS_ASSOC_REQ,
+		.mgmt_frame = mgmt,
+		.ssi_signal = rssi,
+	};
 
 	/* followed by SSID and Supported rates; and HT capabilities if 802.11n
 	 * is used */
@@ -6073,6 +6090,13 @@ static void handle_assoc(struct hostapd_
 	if (set_beacon)
 		ieee802_11_update_beacons(hapd->iface);
 
+	ubus_resp = hostapd_ubus_handle_event(hapd, &req);
+	if (ubus_resp) {
+		wpa_printf(MSG_DEBUG, "Station " MACSTR " assoc rejected by ubus handler.\n",
+		       MAC2STR(mgmt->sa));
+		resp = ubus_resp > 0 ? (u16) ubus_resp : WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
  fail:
 
 	/*
@@ -6302,6 +6326,7 @@ static void handle_disassoc(struct hosta
 			   (unsigned long) len);
 		return;
 	}
+	hostapd_ubus_notify(hapd, "disassoc", mgmt->sa);
 
 	sta = ap_get_sta(hapd, mgmt->sa);
 	if (!sta) {
@@ -6333,6 +6358,8 @@ static void handle_deauth(struct hostapd
 	/* Clear the PTKSA cache entries for PASN */
 	ptksa_cache_flush(hapd->ptksa, mgmt->sa, WPA_CIPHER_NONE);
 
+	hostapd_ubus_notify(hapd, "deauth", mgmt->sa);
+
 	sta = ap_get_sta(hapd, mgmt->sa);
 	if (!sta) {
 		wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
--- a/src/ap/rrm.c
+++ b/src/ap/rrm.c
@@ -89,6 +89,9 @@ static void hostapd_handle_beacon_report
 		return;
 	wpa_msg(hapd->msg_ctx, MSG_INFO, BEACON_RESP_RX MACSTR " %u %02x %s",
 		MAC2STR(addr), token, rep_mode, report);
+	if (len < sizeof(struct rrm_measurement_beacon_report))
+		return;
+	hostapd_ubus_notify_beacon_report(hapd, addr, token, rep_mode, (struct rrm_measurement_beacon_report*) pos, len);
 }
 
 
@@ -406,7 +409,7 @@ void hostapd_handle_radio_measurement(st
 		hostapd_handle_nei_report_req(hapd, buf, len);
 		break;
 	case WLAN_RRM_LINK_MEASUREMENT_REPORT:
-		hostapd_handle_link_mesr_report(hapd, buf, len);
+		hostapd_ubus_handle_link_measurement(hapd, buf, len);
 		break;
 	default:
 		wpa_printf(MSG_DEBUG, "RRM action %u is not supported",
--- a/src/ap/sta_info.c
+++ b/src/ap/sta_info.c
@@ -545,6 +545,7 @@ void ap_handle_timer(void *eloop_ctx, vo
 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 			       HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 			       "local deauth request");
+		hostapd_ubus_notify(hapd, "local-deauth", sta->addr);
 		ap_free_sta(hapd, sta);
 		return;
 	}
@@ -702,6 +703,7 @@ skip_poll:
 		mlme_deauthenticate_indication(
 			hapd, sta,
 			WLAN_REASON_PREV_AUTH_NOT_VALID);
+		hostapd_ubus_notify(hapd, "inactive-deauth", sta->addr);
 		ap_free_sta(hapd, sta);
 		break;
 	}
@@ -1590,17 +1592,30 @@ void ap_sta_set_authorized_event(struct
 		os_snprintf(buf, sizeof(buf), MACSTR, MAC2STR(sta->addr));
 
 	if (authorized) {
+		static const char * const auth_algs[] = {
+			[WLAN_AUTH_OPEN] = "open",
+			[WLAN_AUTH_SHARED_KEY] = "shared",
+			[WLAN_AUTH_FT] = "ft",
+			[WLAN_AUTH_SAE] = "sae",
+			[WLAN_AUTH_FILS_SK] = "fils-sk",
+			[WLAN_AUTH_FILS_SK_PFS] = "fils-sk-pfs",
+			[WLAN_AUTH_FILS_PK] = "fils-pk",
+			[WLAN_AUTH_PASN] = "pasn",
+		};
+		const char *auth_alg = NULL;
 		const u8 *dpp_pkhash;
 		const char *keyid;
 		char dpp_pkhash_buf[100];
 		char keyid_buf[100];
 		char ip_addr[100];
 		char vlanid_buf[20];
+		char alg_buf[100];
 
 		dpp_pkhash_buf[0] = '\0';
 		keyid_buf[0] = '\0';
 		ip_addr[0] = '\0';
 		vlanid_buf[0] = '\0';
+		alg_buf[0] = '\0';
 
 #ifdef CONFIG_P2P
 		if (wpa_auth_get_ip_addr(sta->wpa_sm, ip_addr_buf) == 0) {
@@ -1612,6 +1627,13 @@ void ap_sta_set_authorized_event(struct
 		}
 #endif /* CONFIG_P2P */
 
+		if (sta->auth_alg < ARRAY_SIZE(auth_algs))
+			auth_alg = auth_algs[sta->auth_alg];
+
+		if (auth_alg)
+			os_snprintf(alg_buf, sizeof(alg_buf),
+				" auth_alg=%s", auth_alg);
+
 		keyid = ap_sta_wpa_get_keyid(hapd, sta);
 		if (keyid) {
 			os_snprintf(keyid_buf, sizeof(keyid_buf),
@@ -1636,17 +1658,19 @@ void ap_sta_set_authorized_event(struct
 				    " vlanid=%u", sta->vlan_id);
 #endif /* CONFIG_NO_VLAN */
 
-		wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s%s%s%s",
-			buf, ip_addr, keyid_buf, dpp_pkhash_buf, vlanid_buf);
+		hostapd_ubus_notify_authorized(hapd, sta, auth_alg);
+		wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s%s%s%s%s",
+			buf, ip_addr, keyid_buf, dpp_pkhash_buf, vlanid_buf, alg_buf);
 
 		if (hapd->msg_ctx_parent &&
 		    hapd->msg_ctx_parent != hapd->msg_ctx)
 			wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
-					  AP_STA_CONNECTED "%s%s%s%s%s",
+					  AP_STA_CONNECTED "%s%s%s%s%s%s",
 					  buf, ip_addr, keyid_buf,
-					  dpp_pkhash_buf, vlanid_buf);
+					  dpp_pkhash_buf, vlanid_buf, alg_buf);
 	} else {
 		wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED "%s", buf);
+		hostapd_ubus_notify(hapd, "disassoc", sta->addr);
 
 		if (hapd->msg_ctx_parent &&
 		    hapd->msg_ctx_parent != hapd->msg_ctx)
--- a/src/ap/sta_info.h
+++ b/src/ap/sta_info.h
@@ -302,6 +302,7 @@ struct sta_info {
 #endif /* CONFIG_TESTING_OPTIONS */
 #ifdef CONFIG_AIRTIME_POLICY
 	unsigned int airtime_weight;
+	unsigned int dyn_airtime_weight;
 	struct os_reltime backlogged_until;
 #endif /* CONFIG_AIRTIME_POLICY */
 
--- a/src/ap/vlan_init.c
+++ b/src/ap/vlan_init.c
@@ -22,6 +22,7 @@
 static int vlan_if_add(struct hostapd_data *hapd, struct hostapd_vlan *vlan,
 		       int existsok)
 {
+	bool vlan_exists = iface_exists(vlan->ifname);
 	int ret;
 #ifdef CONFIG_WEP
 	int i;
@@ -36,7 +37,7 @@ static int vlan_if_add(struct hostapd_da
 	}
 #endif /* CONFIG_WEP */
 
-	if (!iface_exists(vlan->ifname))
+	if (!vlan_exists)
 		ret = hostapd_vlan_if_add(hapd, vlan->ifname);
 	else if (!existsok)
 		return -1;
@@ -51,6 +52,9 @@ static int vlan_if_add(struct hostapd_da
 	if (hapd->wpa_auth)
 		ret = wpa_auth_ensure_group(hapd->wpa_auth, vlan->vlan_id);
 
+	if (!ret && !vlan_exists)
+		hostapd_ubus_add_vlan(hapd, vlan);
+
 	if (ret == 0)
 		return ret;
 
@@ -77,6 +81,8 @@ int vlan_if_remove(struct hostapd_data *
 			   "WPA deinitialization for VLAN %d failed (%d)",
 			   vlan->vlan_id, ret);
 
+	hostapd_ubus_remove_vlan(hapd, vlan);
+
 	return hostapd_vlan_if_remove(hapd, vlan->ifname);
 }
 
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -479,7 +479,8 @@ static void ieee802_11_rx_bss_trans_mgmt
 		MAC2STR(addr), reason, hex ? " neighbor=" : "", hex);
 	os_free(hex);
 
-	ieee802_11_send_bss_trans_mgmt_request(hapd, addr, dialog_token);
+	if (!hostapd_ubus_notify_bss_transition_query(hapd, addr, dialog_token, reason, pos, end - pos))
+		ieee802_11_send_bss_trans_mgmt_request(hapd, addr, dialog_token);
 }
 
 
@@ -501,7 +502,7 @@ static void ieee802_11_rx_bss_trans_mgmt
 					      size_t len)
 {
 	u8 dialog_token, status_code, bss_termination_delay;
-	const u8 *pos, *end;
+	const u8 *pos, *end, *target_bssid = NULL;
 	int enabled = hapd->conf->bss_transition;
 	struct sta_info *sta;
 
@@ -548,6 +549,7 @@ static void ieee802_11_rx_bss_trans_mgmt
 			wpa_printf(MSG_DEBUG, "WNM: not enough room for Target BSSID field");
 			return;
 		}
+		target_bssid = pos;
 		sta->agreed_to_steer = 1;
 		eloop_cancel_timeout(ap_sta_reset_steer_flag_timer, hapd, sta);
 		eloop_register_timeout(2, 0, ap_sta_reset_steer_flag_timer,
@@ -567,6 +569,10 @@ static void ieee802_11_rx_bss_trans_mgmt
 			MAC2STR(addr), status_code, bss_termination_delay);
 	}
 
+	hostapd_ubus_notify_bss_transition_response(hapd, sta->addr, dialog_token,
+						    status_code, bss_termination_delay,
+						    target_bssid, pos, end - pos);
+
 	wpa_hexdump(MSG_DEBUG, "WNM: BSS Transition Candidate List Entries",
 		    pos, end - pos);
 }
--- a/src/ap/wpa_auth_glue.c
+++ b/src/ap/wpa_auth_glue.c
@@ -320,6 +320,7 @@ static void hostapd_wpa_auth_psk_failure
 	struct hostapd_data *hapd = ctx;
 	wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POSSIBLE_PSK_MISMATCH MACSTR,
 		MAC2STR(addr));
+	hostapd_ubus_notify(hapd, "key-mismatch", addr);
 }
 
 
--- a/src/utils/eloop.c
+++ b/src/utils/eloop.c
@@ -77,6 +77,9 @@ struct eloop_sock_table {
 struct eloop_data {
 	int max_sock;
 
+	eloop_timeout_poll_handler timeout_poll_cb;
+	eloop_poll_handler poll_cb;
+
 	size_t count; /* sum of all table counts */
 #ifdef CONFIG_ELOOP_POLL
 	size_t max_pollfd_map; /* number of pollfds_map currently allocated */
@@ -1121,6 +1124,12 @@ void eloop_run(void)
 				os_reltime_sub(&timeout->time, &now, &tv);
 			else
 				tv.sec = tv.usec = 0;
+		}
+
+		if (eloop.timeout_poll_cb && eloop.timeout_poll_cb(&tv, !!timeout))
+			timeout = (void *)1;
+
+		if (timeout) {
 #if defined(CONFIG_ELOOP_POLL) || defined(CONFIG_ELOOP_EPOLL)
 			timeout_ms = tv.sec * 1000 + tv.usec / 1000;
 #endif /* defined(CONFIG_ELOOP_POLL) || defined(CONFIG_ELOOP_EPOLL) */
@@ -1190,7 +1199,8 @@ void eloop_run(void)
 		eloop.exceptions.changed = 0;
 
 		eloop_process_pending_signals();
-
+		if (eloop.poll_cb)
+			eloop.poll_cb();
 
 		/* check if some registered timeouts have occurred */
 		timeout = dl_list_first(&eloop.timeout, struct eloop_timeout,
@@ -1252,6 +1262,14 @@ out:
 	return;
 }
 
+int eloop_register_cb(eloop_poll_handler poll_cb,
+		      eloop_timeout_poll_handler timeout_cb)
+{
+	eloop.poll_cb = poll_cb;
+	eloop.timeout_poll_cb = timeout_cb;
+
+	return 0;
+}
 
 void eloop_terminate(void)
 {
--- a/src/utils/eloop.h
+++ b/src/utils/eloop.h
@@ -65,6 +65,9 @@ typedef void (*eloop_timeout_handler)(vo
  */
 typedef void (*eloop_signal_handler)(int sig, void *signal_ctx);
 
+typedef bool (*eloop_timeout_poll_handler)(struct os_reltime *tv, bool tv_set);
+typedef void (*eloop_poll_handler)(void);
+
 /**
  * eloop_init() - Initialize global event loop data
  * Returns: 0 on success, -1 on failure
@@ -73,6 +76,9 @@ typedef void (*eloop_signal_handler)(int
  */
 int eloop_init(void);
 
+int eloop_register_cb(eloop_poll_handler poll_cb,
+		      eloop_timeout_poll_handler timeout_cb);
+
 /**
  * eloop_register_read_sock - Register handler for read events
  * @sock: File descriptor number for the socket
@@ -320,6 +326,8 @@ int eloop_register_signal_reconfig(eloop
  */
 int eloop_sock_requeue(void);
 
+void eloop_add_uloop(void);
+
 /**
  * eloop_run - Start the event loop
  *
--- /dev/null
+++ b/src/utils/uloop.c
@@ -0,0 +1,64 @@
+#include <libubox/uloop.h>
+#include "includes.h"
+#include "common.h"
+#include "eloop.h"
+
+static void eloop_uloop_event_cb(int sock, void *eloop_ctx, void *sock_ctx)
+{
+}
+
+static void eloop_uloop_fd_cb(struct uloop_fd *fd, unsigned int events)
+{
+	unsigned int changed = events ^ fd->flags;
+
+	if (changed & ULOOP_READ) {
+		if (events & ULOOP_READ)
+			eloop_register_sock(fd->fd, EVENT_TYPE_READ, eloop_uloop_event_cb, fd, fd);
+		else
+			eloop_unregister_sock(fd->fd, EVENT_TYPE_READ);
+	}
+
+	if (changed & ULOOP_WRITE) {
+		if (events & ULOOP_WRITE)
+			eloop_register_sock(fd->fd, EVENT_TYPE_WRITE, eloop_uloop_event_cb, fd, fd);
+		else
+			eloop_unregister_sock(fd->fd, EVENT_TYPE_WRITE);
+	}
+}
+
+static bool uloop_timeout_poll_handler(struct os_reltime *tv, bool tv_set)
+{
+	struct os_reltime tv_uloop;
+	int timeout_ms = uloop_get_next_timeout();
+
+	if (timeout_ms < 0)
+		return false;
+
+	tv_uloop.sec = timeout_ms / 1000;
+	tv_uloop.usec = (timeout_ms % 1000) * 1000;
+
+	if (!tv_set || os_reltime_before(&tv_uloop, tv)) {
+		*tv = tv_uloop;
+		return true;
+	}
+
+	return false;
+}
+
+static void uloop_poll_handler(void)
+{
+	uloop_run_timeout(0);
+}
+
+void eloop_add_uloop(void)
+{
+	static bool init_done = false;
+
+	if (!init_done) {
+		uloop_init();
+		uloop_fd_set_cb = eloop_uloop_fd_cb;
+		init_done = true;
+	}
+
+	eloop_register_cb(uloop_poll_handler, uloop_timeout_poll_handler);
+}
--- a/wpa_supplicant/main.c
+++ b/wpa_supplicant/main.c
@@ -203,7 +203,7 @@ int main(int argc, char *argv[])
 
 	for (;;) {
 		c = getopt(argc, argv,
-			   "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuv::W");
+			   "b:Bc:C:D:de:f:g:G:hi:I:KLMm:nNo:O:p:P:qsTtuv::W");
 		if (c < 0)
 			break;
 		switch (c) {
@@ -268,6 +268,9 @@ int main(int argc, char *argv[])
 			params.conf_p2p_dev = optarg;
 			break;
 #endif /* CONFIG_P2P */
+		case 'n':
+			iface_count = 0;
+			break;
 		case 'o':
 			params.override_driver = optarg;
 			break;