wpa/wpa_supplicant/bgscan_simple.c

35 	struct bgscan_simple_data *data = eloop_ctx;
36 	struct wpa_supplicant *wpa_s = data->wpa_s;
41 	params.ssids[0].ssid = data->ssid->ssid;
42 	params.ssids[0].ssid_len = data->ssid->ssid_len;
43 	params.freqs = data->ssid->scan_freq;
48 	 * every now and then) to reduce effect on the data connection.
54 		eloop_register_timeout(data->scan_interval, 0,
55 				       bgscan_simple_timeout, data, NULL);
57 		if (data->scan_interval == data->short_interval) {
58 			data->short_scan_count++;
64 			if (data->short_scan_count > data->max_short_scans) {
65 				data->scan_interval = data->long_interval;
69 		} else if (data->short_scan_count > 0) {
76 			data->short_scan_count--;
78 		os_get_time(&data->last_bgscan);
83 static int bgscan_simple_get_params(struct bgscan_simple_data *data,
91 	data->short_interval = atoi(params);
97 	data->signal_threshold = atoi(pos);
105 	data->long_interval = atoi(pos);
115 	struct bgscan_simple_data *data;
117 	data = os_zalloc(sizeof(*data));
118 	if (data == NULL)
120 	data->wpa_s = wpa_s;
121 	data->ssid = ssid;
122 	if (bgscan_simple_get_params(data, params) < 0) {
123 		os_free(data);
126 	if (data->short_interval <= 0)
127 		data->short_interval = 30;
128 	if (data->long_interval <= 0)
129 		data->long_interval = 30;
133 		   data->signal_threshold, data->short_interval,
134 		   data->long_interval);
136 	if (data->signal_threshold &&
137 	    wpa_drv_signal_monitor(wpa_s, data->signal_threshold, 4) < 0) {
142 	data->scan_interval = data->short_interval;
143 	data->max_short_scans = data->long_interval / data->short_interval + 1;
144 	if (data->signal_threshold) {
148 		    siginfo.current_signal >= data->signal_threshold)
149 			data->scan_interval = data->long_interval;
152 		   data->scan_interval);
153 	eloop_register_timeout(data->scan_interval, 0, bgscan_simple_timeout,
154 			       data, NULL);
162 	os_get_time(&data->last_bgscan);
164 	return data;
170 	struct bgscan_simple_data *data = priv;
171 	eloop_cancel_timeout(bgscan_simple_timeout, data, NULL);
172 	if (data->signal_threshold)
173 		wpa_drv_signal_monitor(data->wpa_s, 0, 0);
174 	os_free(data);
181 	struct bgscan_simple_data *data = priv;
185 	eloop_cancel_timeout(bgscan_simple_timeout, data, NULL);
186 	eloop_register_timeout(data->scan_interval, 0, bgscan_simple_timeout,
187 			       data, NULL);
212 	struct bgscan_simple_data *data = priv;
216 	if (data->short_interval == data->long_interval ||
217 	    data->signal_threshold == 0)
224 	if (data->scan_interval == data->long_interval && !above) {
227 		data->scan_interval = data->short_interval;
229 		if (now.sec > data->last_bgscan.sec + 1 &&
230 		    data->short_scan_count <= data->max_short_scans)
238 		else if (data->last_bgscan.sec + data->long_interval >
239 			 now.sec + data->scan_interval) {
244 			eloop_cancel_timeout(bgscan_simple_timeout, data,
246 			eloop_register_timeout(data->scan_interval, 0,
247 					       bgscan_simple_timeout, data,
250 	} else if (data->scan_interval == data->short_interval && above) {
253 		data->scan_interval = data->long_interval;
254 		eloop_cancel_timeout(bgscan_simple_timeout, data, NULL);
255 		eloop_register_timeout(data->scan_interval, 0,
256 				       bgscan_simple_timeout, data, NULL);
263 		if (now.sec > data->last_bgscan.sec + 10)
269 		eloop_cancel_timeout(bgscan_simple_timeout, data, NULL);
270 		eloop_register_timeout(0, 0, bgscan_simple_timeout, data,