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18#include "wil6210.h"
19#include "wmi.h"
20
21#define P2P_WILDCARD_SSID "DIRECT-"
22#define P2P_DMG_SOCIAL_CHANNEL 2
23#define P2P_SEARCH_DURATION_MS 500
24#define P2P_DEFAULT_BI 100
25
26static int wil_p2p_start_listen(struct wil6210_vif *vif)
27{
28 struct wil6210_priv *wil = vif_to_wil(vif);
29 struct wil_p2p_info *p2p = &vif->p2p;
30 u8 channel = p2p->listen_chan.hw_value;
31 int rc;
32
33 lockdep_assert_held(&wil->mutex);
34
35 rc = wmi_p2p_cfg(vif, channel, P2P_DEFAULT_BI);
36 if (rc) {
37 wil_err(wil, "wmi_p2p_cfg failed\n");
38 goto out;
39 }
40
41 rc = wmi_set_ssid(vif, strlen(P2P_WILDCARD_SSID), P2P_WILDCARD_SSID);
42 if (rc) {
43 wil_err(wil, "wmi_set_ssid failed\n");
44 goto out_stop;
45 }
46
47 rc = wmi_start_listen(vif);
48 if (rc) {
49 wil_err(wil, "wmi_start_listen failed\n");
50 goto out_stop;
51 }
52
53 INIT_WORK(&p2p->discovery_expired_work, wil_p2p_listen_expired);
54 mod_timer(&p2p->discovery_timer,
55 jiffies + msecs_to_jiffies(p2p->listen_duration));
56out_stop:
57 if (rc)
58 wmi_stop_discovery(vif);
59
60out:
61 return rc;
62}
63
64bool wil_p2p_is_social_scan(struct cfg80211_scan_request *request)
65{
66 return (request->n_channels == 1) &&
67 (request->channels[0]->hw_value == P2P_DMG_SOCIAL_CHANNEL);
68}
69
70int wil_p2p_search(struct wil6210_vif *vif,
71 struct cfg80211_scan_request *request)
72{
73 struct wil6210_priv *wil = vif_to_wil(vif);
74 int rc;
75 struct wil_p2p_info *p2p = &vif->p2p;
76
77 wil_dbg_misc(wil, "p2p_search: channel %d\n", P2P_DMG_SOCIAL_CHANNEL);
78
79 lockdep_assert_held(&wil->mutex);
80
81 if (p2p->discovery_started) {
82 wil_err(wil, "search failed. discovery already ongoing\n");
83 rc = -EBUSY;
84 goto out;
85 }
86
87 rc = wmi_p2p_cfg(vif, P2P_DMG_SOCIAL_CHANNEL, P2P_DEFAULT_BI);
88 if (rc) {
89 wil_err(wil, "wmi_p2p_cfg failed\n");
90 goto out;
91 }
92
93 rc = wmi_set_ssid(vif, strlen(P2P_WILDCARD_SSID), P2P_WILDCARD_SSID);
94 if (rc) {
95 wil_err(wil, "wmi_set_ssid failed\n");
96 goto out_stop;
97 }
98
99
100 rc = wmi_set_ie(vif, WMI_FRAME_PROBE_REQ,
101 request->ie_len, request->ie);
102 if (rc) {
103 wil_err(wil, "wmi_set_ie(WMI_FRAME_PROBE_REQ) failed\n");
104 goto out_stop;
105 }
106
107
108
109
110 rc = wmi_set_ie(vif, WMI_FRAME_PROBE_RESP,
111 request->ie_len, request->ie);
112 if (rc) {
113 wil_err(wil, "wmi_set_ie(WMI_FRAME_PROBE_RESP) failed\n");
114 goto out_stop;
115 }
116
117 rc = wmi_start_search(vif);
118 if (rc) {
119 wil_err(wil, "wmi_start_search failed\n");
120 goto out_stop;
121 }
122
123 p2p->discovery_started = 1;
124 INIT_WORK(&p2p->discovery_expired_work, wil_p2p_search_expired);
125 mod_timer(&p2p->discovery_timer,
126 jiffies + msecs_to_jiffies(P2P_SEARCH_DURATION_MS));
127
128out_stop:
129 if (rc)
130 wmi_stop_discovery(vif);
131
132out:
133 return rc;
134}
135
136int wil_p2p_listen(struct wil6210_priv *wil, struct wireless_dev *wdev,
137 unsigned int duration, struct ieee80211_channel *chan,
138 u64 *cookie)
139{
140 struct wil6210_vif *vif = wdev_to_vif(wil, wdev);
141 struct wil_p2p_info *p2p = &vif->p2p;
142 int rc;
143
144 if (!chan)
145 return -EINVAL;
146
147 wil_dbg_misc(wil, "p2p_listen: duration %d\n", duration);
148
149 mutex_lock(&wil->mutex);
150
151 if (p2p->discovery_started) {
152 wil_err(wil, "discovery already ongoing\n");
153 rc = -EBUSY;
154 goto out;
155 }
156
157 memcpy(&p2p->listen_chan, chan, sizeof(*chan));
158 *cookie = ++p2p->cookie;
159 p2p->listen_duration = duration;
160
161 mutex_lock(&wil->vif_mutex);
162 if (vif->scan_request) {
163 wil_dbg_misc(wil, "Delaying p2p listen until scan done\n");
164 p2p->pending_listen_wdev = wdev;
165 p2p->discovery_started = 1;
166 rc = 0;
167 mutex_unlock(&wil->vif_mutex);
168 goto out;
169 }
170 mutex_unlock(&wil->vif_mutex);
171
172 rc = wil_p2p_start_listen(vif);
173 if (rc)
174 goto out;
175
176 p2p->discovery_started = 1;
177 if (vif->mid == 0)
178 wil->radio_wdev = wdev;
179
180 cfg80211_ready_on_channel(wdev, *cookie, chan, duration,
181 GFP_KERNEL);
182
183out:
184 mutex_unlock(&wil->mutex);
185 return rc;
186}
187
188u8 wil_p2p_stop_discovery(struct wil6210_vif *vif)
189{
190 struct wil_p2p_info *p2p = &vif->p2p;
191 u8 started = p2p->discovery_started;
192
193 if (p2p->discovery_started) {
194 if (p2p->pending_listen_wdev) {
195
196 p2p->pending_listen_wdev = NULL;
197 } else {
198 del_timer_sync(&p2p->discovery_timer);
199 wmi_stop_discovery(vif);
200 }
201 p2p->discovery_started = 0;
202 }
203
204 return started;
205}
206
207int wil_p2p_cancel_listen(struct wil6210_vif *vif, u64 cookie)
208{
209 struct wil6210_priv *wil = vif_to_wil(vif);
210 struct wil_p2p_info *p2p = &vif->p2p;
211 u8 started;
212
213 mutex_lock(&wil->mutex);
214
215 if (cookie != p2p->cookie) {
216 wil_info(wil, "Cookie mismatch: 0x%016llx vs. 0x%016llx\n",
217 p2p->cookie, cookie);
218 mutex_unlock(&wil->mutex);
219 return -ENOENT;
220 }
221
222 started = wil_p2p_stop_discovery(vif);
223
224 mutex_unlock(&wil->mutex);
225
226 if (!started) {
227 wil_err(wil, "listen not started\n");
228 return -ENOENT;
229 }
230
231 mutex_lock(&wil->vif_mutex);
232 cfg80211_remain_on_channel_expired(vif_to_radio_wdev(wil, vif),
233 p2p->cookie,
234 &p2p->listen_chan,
235 GFP_KERNEL);
236 if (vif->mid == 0)
237 wil->radio_wdev = wil->main_ndev->ieee80211_ptr;
238 mutex_unlock(&wil->vif_mutex);
239 return 0;
240}
241
242void wil_p2p_listen_expired(struct work_struct *work)
243{
244 struct wil_p2p_info *p2p = container_of(work,
245 struct wil_p2p_info, discovery_expired_work);
246 struct wil6210_vif *vif = container_of(p2p,
247 struct wil6210_vif, p2p);
248 struct wil6210_priv *wil = vif_to_wil(vif);
249 u8 started;
250
251 wil_dbg_misc(wil, "p2p_listen_expired\n");
252
253 mutex_lock(&wil->mutex);
254 started = wil_p2p_stop_discovery(vif);
255 mutex_unlock(&wil->mutex);
256
257 if (!started)
258 return;
259
260 mutex_lock(&wil->vif_mutex);
261 cfg80211_remain_on_channel_expired(vif_to_radio_wdev(wil, vif),
262 p2p->cookie,
263 &p2p->listen_chan,
264 GFP_KERNEL);
265 if (vif->mid == 0)
266 wil->radio_wdev = wil->main_ndev->ieee80211_ptr;
267 mutex_unlock(&wil->vif_mutex);
268}
269
270void wil_p2p_search_expired(struct work_struct *work)
271{
272 struct wil_p2p_info *p2p = container_of(work,
273 struct wil_p2p_info, discovery_expired_work);
274 struct wil6210_vif *vif = container_of(p2p,
275 struct wil6210_vif, p2p);
276 struct wil6210_priv *wil = vif_to_wil(vif);
277 u8 started;
278
279 wil_dbg_misc(wil, "p2p_search_expired\n");
280
281 mutex_lock(&wil->mutex);
282 started = wil_p2p_stop_discovery(vif);
283 mutex_unlock(&wil->mutex);
284
285 if (started) {
286 struct cfg80211_scan_info info = {
287 .aborted = false,
288 };
289
290 mutex_lock(&wil->vif_mutex);
291 if (vif->scan_request) {
292 cfg80211_scan_done(vif->scan_request, &info);
293 vif->scan_request = NULL;
294 if (vif->mid == 0)
295 wil->radio_wdev =
296 wil->main_ndev->ieee80211_ptr;
297 }
298 mutex_unlock(&wil->vif_mutex);
299 }
300}
301
302void wil_p2p_delayed_listen_work(struct work_struct *work)
303{
304 struct wil_p2p_info *p2p = container_of(work,
305 struct wil_p2p_info, delayed_listen_work);
306 struct wil6210_vif *vif = container_of(p2p,
307 struct wil6210_vif, p2p);
308 struct wil6210_priv *wil = vif_to_wil(vif);
309 int rc;
310
311 mutex_lock(&wil->mutex);
312
313 wil_dbg_misc(wil, "Checking delayed p2p listen\n");
314 if (!p2p->discovery_started || !p2p->pending_listen_wdev)
315 goto out;
316
317 mutex_lock(&wil->vif_mutex);
318 if (vif->scan_request) {
319
320 mutex_unlock(&wil->vif_mutex);
321 goto out;
322 }
323 mutex_unlock(&wil->vif_mutex);
324
325 rc = wil_p2p_start_listen(vif);
326
327 mutex_lock(&wil->vif_mutex);
328 if (rc) {
329 cfg80211_remain_on_channel_expired(p2p->pending_listen_wdev,
330 p2p->cookie,
331 &p2p->listen_chan,
332 GFP_KERNEL);
333 if (vif->mid == 0)
334 wil->radio_wdev = wil->main_ndev->ieee80211_ptr;
335 } else {
336 cfg80211_ready_on_channel(p2p->pending_listen_wdev, p2p->cookie,
337 &p2p->listen_chan,
338 p2p->listen_duration, GFP_KERNEL);
339 if (vif->mid == 0)
340 wil->radio_wdev = p2p->pending_listen_wdev;
341 }
342 p2p->pending_listen_wdev = NULL;
343 mutex_unlock(&wil->vif_mutex);
344
345out:
346 mutex_unlock(&wil->mutex);
347}
348
349void wil_p2p_stop_radio_operations(struct wil6210_priv *wil)
350{
351 struct wil6210_vif *vif = ndev_to_vif(wil->main_ndev);
352 struct wil_p2p_info *p2p = &vif->p2p;
353 struct cfg80211_scan_info info = {
354 .aborted = true,
355 };
356
357 lockdep_assert_held(&wil->mutex);
358 lockdep_assert_held(&wil->vif_mutex);
359
360 if (wil->radio_wdev != wil->p2p_wdev)
361 goto out;
362
363 if (!p2p->discovery_started) {
364
365 if (vif->scan_request &&
366 vif->scan_request->wdev == wil->p2p_wdev)
367 wil_abort_scan(vif, true);
368 goto out;
369 }
370
371
372 mutex_unlock(&wil->vif_mutex);
373 wil_p2p_stop_discovery(vif);
374 mutex_lock(&wil->vif_mutex);
375
376 if (vif->scan_request) {
377
378 cfg80211_scan_done(vif->scan_request, &info);
379 vif->scan_request = NULL;
380 } else {
381
382 cfg80211_remain_on_channel_expired(wil->radio_wdev,
383 p2p->cookie,
384 &p2p->listen_chan,
385 GFP_KERNEL);
386 }
387
388out:
389 wil->radio_wdev = wil->main_ndev->ieee80211_ptr;
390}
391
