st/cw1200/scan.c

11 #include "scan.h"
17 static int cw1200_scan_start(struct cw1200_common *priv, struct wsm_scan *scan)
31 		  scan->type, scan->num_channels, scan->flags);
33 	for (i = 0; i < scan->num_channels; ++i)
34 		tmo += scan->ch[i].max_chan_time + 10;
37 	atomic_set(&priv->scan.in_progress, 1);
40 	queue_delayed_work(priv->workqueue, &priv->scan.timeout,
42 	ret = wsm_scan(priv, scan);
44 		atomic_set(&priv->scan.in_progress, 0);
45 		cancel_delayed_work_sync(&priv->scan.timeout);
87 	down(&priv->scan.lock);
97 		up(&priv->scan.lock);
104 	BUG_ON(priv->scan.req);
105 	priv->scan.req = req;
106 	priv->scan.n_ssids = 0;
107 	priv->scan.status = 0;
108 	priv->scan.begin = &req->channels[0];
109 	priv->scan.curr = priv->scan.begin;
110 	priv->scan.end = &req->channels[req->n_channels];
111 	priv->scan.output_power = priv->output_power;
114 		struct wsm_ssid *dst = &priv->scan.ssids[priv->scan.n_ssids];
117 		++priv->scan.n_ssids;
122 	queue_work(priv->workqueue, &priv->scan.work);
129 							scan.work);
131 	struct wsm_scan scan = {
135 	bool first_run = (priv->scan.begin == priv->scan.curr &&
136 			  priv->scan.begin != priv->scan.end);
140 		/* Firmware gets crazy if scan request is sent
158 			 * after scan
164 	if (!priv->scan.req || (priv->scan.curr == priv->scan.end)) {
166 			.aborted = priv->scan.status ? 1 : 0,
169 		if (priv->scan.output_power != priv->output_power)
175 		if (priv->scan.status < 0)
178 				   priv->scan.status);
179 		else if (priv->scan.req)
186 		priv->scan.req = NULL;
191 		up(&priv->scan.lock);
194 		struct ieee80211_channel *first = *priv->scan.curr;
195 		for (it = priv->scan.curr + 1, i = 1;
196 		     it != priv->scan.end && i < WSM_SCAN_MAX_NUM_OF_CHANNELS;
207 		scan.band = first->band;
209 		if (priv->scan.req->no_cck)
210 			scan.max_tx_rate = WSM_TRANSMIT_RATE_6;
212 			scan.max_tx_rate = WSM_TRANSMIT_RATE_1;
213 		scan.num_probes =
215 		scan.num_ssids = priv->scan.n_ssids;
216 		scan.ssids = &priv->scan.ssids[0];
217 		scan.num_channels = it - priv->scan.curr;
219 		scan.probe_delay = 100;
221 		 * FW team says that driver may not use FG scan
225 			scan.type = WSM_SCAN_TYPE_BACKGROUND;
226 			scan.flags = WSM_SCAN_FLAG_FORCE_BACKGROUND;
228 		scan.ch = kcalloc(it - priv->scan.curr,
231 		if (!scan.ch) {
232 			priv->scan.status = -ENOMEM;
235 		for (i = 0; i < scan.num_channels; ++i) {
236 			scan.ch[i].number = priv->scan.curr[i]->hw_value;
237 			if (priv->scan.curr[i]->flags & IEEE80211_CHAN_NO_IR) {
238 				scan.ch[i].min_chan_time = 50;
239 				scan.ch[i].max_chan_time = 100;
241 				scan.ch[i].min_chan_time = 10;
242 				scan.ch[i].max_chan_time = 25;
246 		    priv->scan.output_power != first->max_power) {
247 			priv->scan.output_power = first->max_power;
249 					     priv->scan.output_power * 10);
251 		priv->scan.status = cw1200_scan_start(priv, &scan);
252 		kfree(scan.ch);
253 		if (priv->scan.status)
255 		priv->scan.curr = it;
261 	priv->scan.curr = priv->scan.end;
263 	queue_work(priv->workqueue, &priv->scan.work);
269 	/* FW bug: driver has to restart p2p-dev mode after scan. */
289 	if (priv->scan.direct_probe) {
292 		priv->scan.direct_probe = 0;
293 		up(&priv->scan.lock);
296 		cw1200_scan_work(&priv->scan.work);
306 	if (cancel_delayed_work_sync(&priv->scan.timeout) > 0) {
307 		priv->scan.status = -EIO;
308 		queue_delayed_work(priv->workqueue, &priv->scan.timeout, 0);
320 	if (cancel_delayed_work_sync(&priv->scan.timeout) > 0) {
321 		priv->scan.status = 1;
322 		queue_delayed_work(priv->workqueue, &priv->scan.timeout, 0);
337 		container_of(work, struct cw1200_common, scan.timeout.work);
338 	if (atomic_xchg(&priv->scan.in_progress, 0)) {
339 		if (priv->scan.status > 0) {
340 			priv->scan.status = 0;
341 		} else if (!priv->scan.status) {
343 				   "Timeout waiting for scan complete notification.\n");
344 			priv->scan.status = -ETIMEDOUT;
345 			priv->scan.curr = priv->scan.end;
355 		container_of(work, struct cw1200_common, scan.probe_work.work);
370 	struct wsm_scan scan = {
385 	if (down_trylock(&priv->scan.lock)) {
388 		queue_delayed_work(priv->workqueue, &priv->scan.probe_work,
397 		up(&priv->scan.lock);
403 	scan.max_tx_rate = wsm->max_tx_rate;
404 	scan.band = (priv->channel->band == NL80211_BAND_5GHZ) ?
408 		scan.type = WSM_SCAN_TYPE_BACKGROUND;
409 		scan.flags = WSM_SCAN_FLAG_FORCE_BACKGROUND;
430 			scan.num_ssids = 1;
439 	/* FW bug: driver has to restart p2p-dev mode after scan */
443 	priv->scan.direct_probe = 1;
446 		ret = cw1200_scan_start(priv, &scan);
456 		priv->scan.direct_probe = 0;
457 		up(&priv->scan.lock);