]> git.ipfire.org Git - thirdparty/hostap.git/blob - wpa_supplicant/p2p_supplicant.c
projects / thirdparty / hostap.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
P2P: Set global->p2p_group_formation in wpas_p2p_join_start() for p2pdev
[thirdparty/hostap.git] / wpa_supplicant / p2p_supplicant.c
1 /*
2 * wpa_supplicant - P2P
3 * Copyright (c) 2009-2010, Atheros Communications
4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "eloop.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/wpa_ctrl.h"
17 #include "wps/wps_i.h"
18 #include "p2p/p2p.h"
19 #include "ap/hostapd.h"
20 #include "ap/ap_config.h"
21 #include "ap/sta_info.h"
22 #include "ap/ap_drv_ops.h"
23 #include "ap/wps_hostapd.h"
24 #include "ap/p2p_hostapd.h"
25 #include "ap/dfs.h"
26 #include "eapol_supp/eapol_supp_sm.h"
27 #include "rsn_supp/wpa.h"
28 #include "wpa_supplicant_i.h"
29 #include "driver_i.h"
30 #include "ap.h"
31 #include "config_ssid.h"
32 #include "config.h"
33 #include "notify.h"
34 #include "scan.h"
35 #include "bss.h"
36 #include "offchannel.h"
37 #include "wps_supplicant.h"
38 #include "p2p_supplicant.h"
39 #include "wifi_display.h"
40
41
42 /*
43 * How many times to try to scan to find the GO before giving up on join
44 * request.
45 */
46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
47
48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
49
50 /**
51 * Defines time interval in seconds when a GO needs to evacuate a frequency that
52 * it is currently using, but is no longer valid for P2P use cases.
53 */
54 #define P2P_GO_FREQ_CHANGE_TIME 5
55
56 /**
57 * Defines CSA parameters which are used when GO evacuates the no longer valid
58 * channel (and if the driver supports channel switch).
59 */
60 #define P2P_GO_CSA_COUNT 7
61 #define P2P_GO_CSA_BLOCK_TX 0
62
63 #ifndef P2P_MAX_CLIENT_IDLE
64 /*
65 * How many seconds to try to reconnect to the GO when connection in P2P client
66 * role has been lost.
67 */
68 #define P2P_MAX_CLIENT_IDLE 10
69 #endif /* P2P_MAX_CLIENT_IDLE */
70
71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
72 /*
73 * How many seconds to wait for initial 4-way handshake to get completed after
74 * WPS provisioning step or after the re-invocation of a persistent group on a
75 * P2P Client.
76 */
77 #define P2P_MAX_INITIAL_CONN_WAIT 10
78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
79
80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
81 /*
82 * How many seconds to wait for initial 4-way handshake to get completed after
83 * WPS provisioning step on the GO. This controls the extra time the P2P
84 * operation is considered to be in progress (e.g., to delay other scans) after
85 * WPS provisioning has been completed on the GO during group formation.
86 */
87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
89
90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
91 /*
92 * How many seconds to wait for initial 4-way handshake to get completed after
93 * re-invocation of a persistent group on the GO when the client is expected
94 * to connect automatically (no user interaction).
95 */
96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
98
99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
100
101 /*
102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt
103 * was not possible.
104 */
105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
106
107 enum p2p_group_removal_reason {
108 P2P_GROUP_REMOVAL_UNKNOWN,
109 P2P_GROUP_REMOVAL_SILENT,
110 P2P_GROUP_REMOVAL_FORMATION_FAILED,
111 P2P_GROUP_REMOVAL_REQUESTED,
112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
113 P2P_GROUP_REMOVAL_UNAVAILABLE,
114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
115 P2P_GROUP_REMOVAL_PSK_FAILURE,
116 P2P_GROUP_REMOVAL_FREQ_CONFLICT,
117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
118 };
119
120
121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
122 static struct wpa_supplicant *
123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
124 int go);
125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
126 const u8 *ssid, size_t ssid_len);
127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
128 int *force_freq, int *pref_freq, int go,
129 unsigned int *pref_freq_list,
130 unsigned int *num_pref_freq);
131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
132 const u8 *ssid, size_t ssid_len);
133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
135 const u8 *dev_addr, enum p2p_wps_method wps_method,
136 int auto_join, int freq,
137 const u8 *ssid, size_t ssid_len);
138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
143 void *timeout_ctx);
144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
146 int group_added);
147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
148 static void wpas_stop_listen(void *ctx);
149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
152 enum wpa_driver_if_type type);
153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
154 int already_deleted);
155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
156 struct wpa_used_freq_data *freqs,
157 unsigned int num);
158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
160 static void
161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
162 struct wpa_used_freq_data *freqs, unsigned int num,
163 enum wpas_p2p_channel_update_trig trig);
164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
165
166
167 /*
168 * Get the number of concurrent channels that the HW can operate, but that are
169 * currently not in use by any of the wpa_supplicant interfaces.
170 */
171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
172 {
173 int *freqs;
174 int num, unused;
175
176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
177 if (!freqs)
178 return -1;
179
180 num = get_shared_radio_freqs(wpa_s, freqs,
181 wpa_s->num_multichan_concurrent);
182 os_free(freqs);
183
184 unused = wpa_s->num_multichan_concurrent - num;
185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
186 return unused;
187 }
188
189
190 /*
191 * Get the frequencies that are currently in use by one or more of the virtual
192 * interfaces, and that are also valid for P2P operation.
193 */
194 static unsigned int
195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
196 struct wpa_used_freq_data *p2p_freqs,
197 unsigned int len)
198 {
199 struct wpa_used_freq_data *freqs;
200 unsigned int num, i, j;
201
202 freqs = os_calloc(wpa_s->num_multichan_concurrent,
203 sizeof(struct wpa_used_freq_data));
204 if (!freqs)
205 return 0;
206
207 num = get_shared_radio_freqs_data(wpa_s, freqs,
208 wpa_s->num_multichan_concurrent);
209
210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
211
212 for (i = 0, j = 0; i < num && j < len; i++) {
213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
214 p2p_freqs[j++] = freqs[i];
215 }
216
217 os_free(freqs);
218
219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
220
221 return j;
222 }
223
224
225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
226 int freq)
227 {
228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
229 return;
230
231 /* Use the wpa_s used to control the P2P Device operation */
232 wpa_s = wpa_s->global->p2p_init_wpa_s;
233
234 if (wpa_s->conf->p2p_ignore_shared_freq &&
235 freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
236 wpas_p2p_num_unused_channels(wpa_s) > 0) {
237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
238 freq);
239 freq = 0;
240 }
241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
242 }
243
244
245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
246 struct wpa_scan_results *scan_res)
247 {
248 size_t i;
249
250 if (wpa_s->p2p_scan_work) {
251 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
252 wpa_s->p2p_scan_work = NULL;
253 radio_work_done(work);
254 }
255
256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
257 return;
258
259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
260 (int) scan_res->num);
261
262 for (i = 0; i < scan_res->num; i++) {
263 struct wpa_scan_res *bss = scan_res->res[i];
264 struct os_reltime time_tmp_age, entry_ts;
265 const u8 *ies;
266 size_t ies_len;
267
268 time_tmp_age.sec = bss->age / 1000;
269 time_tmp_age.usec = (bss->age % 1000) * 1000;
270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
271
272 ies = (const u8 *) (bss + 1);
273 ies_len = bss->ie_len;
274 if (bss->beacon_ie_len > 0 &&
275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
278 MACSTR, MAC2STR(bss->bssid));
279 ies = ies + ies_len;
280 ies_len = bss->beacon_ie_len;
281 }
282
283
284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
285 bss->freq, &entry_ts, bss->level,
286 ies, ies_len) > 0)
287 break;
288 }
289
290 p2p_scan_res_handled(wpa_s->global->p2p);
291 }
292
293
294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
295 {
296 struct wpa_supplicant *wpa_s = work->wpa_s;
297 struct wpa_driver_scan_params *params = work->ctx;
298 int ret;
299
300 if (deinit) {
301 if (!work->started) {
302 wpa_scan_free_params(params);
303 return;
304 }
305
306 wpa_s->p2p_scan_work = NULL;
307 return;
308 }
309
310 if (wpa_s->clear_driver_scan_cache) {
311 wpa_printf(MSG_DEBUG,
312 "Request driver to clear scan cache due to local BSS flush");
313 params->only_new_results = 1;
314 }
315 ret = wpa_drv_scan(wpa_s, params);
316 if (ret == 0)
317 wpa_s->curr_scan_cookie = params->scan_cookie;
318 wpa_scan_free_params(params);
319 work->ctx = NULL;
320 if (ret) {
321 radio_work_done(work);
322 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
323 return;
324 }
325
326 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
327 os_get_reltime(&wpa_s->scan_trigger_time);
328 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
329 wpa_s->own_scan_requested = 1;
330 wpa_s->clear_driver_scan_cache = 0;
331 wpa_s->p2p_scan_work = work;
332 }
333
334
335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
336 int freq)
337 {
338 if (wpa_s->global->p2p_24ghz_social_channels &&
339 (freq == 2412 || freq == 2437 || freq == 2462)) {
340 /*
341 * Search all social channels regardless of whether these have
342 * been disabled for P2P operating channel use to avoid missing
343 * peers.
344 */
345 return 1;
346 }
347 return p2p_supported_freq(wpa_s->global->p2p, freq);
348 }
349
350
351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
352 unsigned int num_req_dev_types,
353 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
354 {
355 struct wpa_supplicant *wpa_s = ctx;
356 struct wpa_driver_scan_params *params = NULL;
357 struct wpabuf *wps_ie, *ies;
358 unsigned int num_channels = 0;
359 int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
360 size_t ielen;
361 u8 *n, i;
362 unsigned int bands;
363
364 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
365 return -1;
366
367 if (wpa_s->p2p_scan_work) {
368 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
369 return -1;
370 }
371
372 params = os_zalloc(sizeof(*params));
373 if (params == NULL)
374 return -1;
375
376 /* P2P Wildcard SSID */
377 params->num_ssids = 1;
378 n = os_malloc(P2P_WILDCARD_SSID_LEN);
379 if (n == NULL)
380 goto fail;
381 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
382 params->ssids[0].ssid = n;
383 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
384
385 wpa_s->wps->dev.p2p = 1;
386 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
387 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
388 num_req_dev_types, req_dev_types);
389 if (wps_ie == NULL)
390 goto fail;
391
392 switch (type) {
393 case P2P_SCAN_SOCIAL:
394 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
395 sizeof(int));
396 if (params->freqs == NULL)
397 goto fail;
398 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
399 if (wpas_p2p_search_social_channel(
400 wpa_s, social_channels_freq[i]))
401 params->freqs[num_channels++] =
402 social_channels_freq[i];
403 }
404 params->freqs[num_channels++] = 0;
405 break;
406 case P2P_SCAN_FULL:
407 break;
408 case P2P_SCAN_SPECIFIC:
409 params->freqs = os_calloc(2, sizeof(int));
410 if (params->freqs == NULL)
411 goto fail;
412 params->freqs[0] = freq;
413 params->freqs[1] = 0;
414 break;
415 case P2P_SCAN_SOCIAL_PLUS_ONE:
416 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
417 sizeof(int));
418 if (params->freqs == NULL)
419 goto fail;
420 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
421 if (wpas_p2p_search_social_channel(
422 wpa_s, social_channels_freq[i]))
423 params->freqs[num_channels++] =
424 social_channels_freq[i];
425 }
426 if (p2p_supported_freq(wpa_s->global->p2p, freq))
427 params->freqs[num_channels++] = freq;
428 params->freqs[num_channels++] = 0;
429 break;
430 }
431
432 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
433 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
434 if (ies == NULL) {
435 wpabuf_free(wps_ie);
436 goto fail;
437 }
438 wpabuf_put_buf(ies, wps_ie);
439 wpabuf_free(wps_ie);
440
441 bands = wpas_get_bands(wpa_s, params->freqs);
442 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
443
444 params->p2p_probe = 1;
445 n = os_malloc(wpabuf_len(ies));
446 if (n == NULL) {
447 wpabuf_free(ies);
448 goto fail;
449 }
450 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
451 params->extra_ies = n;
452 params->extra_ies_len = wpabuf_len(ies);
453 wpabuf_free(ies);
454
455 radio_remove_works(wpa_s, "p2p-scan", 0);
456 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
457 params) < 0)
458 goto fail;
459 return 0;
460
461 fail:
462 wpa_scan_free_params(params);
463 return -1;
464 }
465
466
467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
468 {
469 switch (p2p_group_interface) {
470 case P2P_GROUP_INTERFACE_PENDING:
471 return WPA_IF_P2P_GROUP;
472 case P2P_GROUP_INTERFACE_GO:
473 return WPA_IF_P2P_GO;
474 case P2P_GROUP_INTERFACE_CLIENT:
475 return WPA_IF_P2P_CLIENT;
476 }
477
478 return WPA_IF_P2P_GROUP;
479 }
480
481
482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
483 const u8 *ssid,
484 size_t ssid_len, int *go)
485 {
486 struct wpa_ssid *s;
487
488 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
489 for (s = wpa_s->conf->ssid; s; s = s->next) {
490 if (s->disabled != 0 || !s->p2p_group ||
491 s->ssid_len != ssid_len ||
492 os_memcmp(ssid, s->ssid, ssid_len) != 0)
493 continue;
494 if (s->mode == WPAS_MODE_P2P_GO &&
495 s != wpa_s->current_ssid)
496 continue;
497 if (go)
498 *go = s->mode == WPAS_MODE_P2P_GO;
499 return wpa_s;
500 }
501 }
502
503 return NULL;
504 }
505
506
507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
508 {
509 struct wpa_supplicant *wpa_s = eloop_ctx;
510 wpa_printf(MSG_DEBUG,
511 "P2P: Complete previously requested removal of %s",
512 wpa_s->ifname);
513 wpas_p2p_disconnect(wpa_s);
514 }
515
516
517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
518 struct wpa_supplicant *calling_wpa_s)
519 {
520 if (calling_wpa_s == wpa_s && wpa_s &&
521 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
522 /*
523 * The calling wpa_s instance is going to be removed. Do that
524 * from an eloop callback to keep the instance available until
525 * the caller has returned. This my be needed, e.g., to provide
526 * control interface responses on the per-interface socket.
527 */
528 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
529 wpa_s, NULL) < 0)
530 return -1;
531 return 0;
532 }
533
534 return wpas_p2p_disconnect(wpa_s);
535 }
536
537
538 /* Determine total number of clients in active groups where we are the GO */
539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
540 {
541 unsigned int count = 0;
542 struct wpa_ssid *s;
543
544 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
545 for (s = wpa_s->conf->ssid; s; s = s->next) {
546 wpa_printf(MSG_DEBUG,
547 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
548 wpa_s, s, s->disabled, s->p2p_group,
549 s->mode);
550 if (!s->disabled && s->p2p_group &&
551 s->mode == WPAS_MODE_P2P_GO) {
552 count += p2p_get_group_num_members(
553 wpa_s->p2p_group);
554 }
555 }
556 }
557
558 return count;
559 }
560
561
562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
563 {
564 return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
565 !wpa_s->current_ssid->disabled &&
566 wpa_s->current_ssid->p2p_group &&
567 wpa_s->current_ssid->p2p_persistent_group;
568 }
569
570
571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
572 {
573 return p2p_is_active_persistent_group(wpa_s) &&
574 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
575 }
576
577
578 /* Find an interface for a P2P group where we are the GO */
579 static struct wpa_supplicant *
580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
581 {
582 struct wpa_supplicant *save = NULL;
583
584 if (!wpa_s)
585 return NULL;
586
587 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
588 if (!p2p_is_active_persistent_go(wpa_s))
589 continue;
590
591 /* Prefer a group with connected clients */
592 if (p2p_get_group_num_members(wpa_s->p2p_group))
593 return wpa_s;
594 save = wpa_s;
595 }
596
597 /* No group with connected clients, so pick the one without (if any) */
598 return save;
599 }
600
601
602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
603 {
604 return p2p_is_active_persistent_group(wpa_s) &&
605 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
606 }
607
608
609 /* Find an interface for a P2P group where we are the P2P Client */
610 static struct wpa_supplicant *
611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
612 {
613 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
614 if (p2p_is_active_persistent_cli(wpa_s))
615 return wpa_s;
616 }
617
618 return NULL;
619 }
620
621
622 /* Find a persistent group where we are the GO */
623 static struct wpa_ssid *
624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
625 {
626 struct wpa_ssid *s;
627
628 for (s = wpa_s->conf->ssid; s; s = s->next) {
629 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
630 return s;
631 }
632
633 return NULL;
634 }
635
636
637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
638 unsigned int *force_freq,
639 unsigned int *pref_freq)
640 {
641 struct wpa_supplicant *wpa_s = ctx;
642 struct wpa_ssid *s;
643 u8 conncap = P2PS_SETUP_NONE;
644 unsigned int owned_members = 0;
645 struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
646 struct wpa_ssid *persistent_go;
647 int p2p_no_group_iface;
648 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
649
650 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
651
652 if (force_freq)
653 *force_freq = 0;
654 if (pref_freq)
655 *pref_freq = 0;
656
657 size = P2P_MAX_PREF_CHANNELS;
658 if (force_freq && pref_freq &&
659 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
660 (int *) pref_freq, 0, pref_freq_list, &size))
661 wpas_p2p_set_own_freq_preference(wpa_s,
662 *force_freq ? *force_freq :
663 *pref_freq);
664
665 /*
666 * For non-concurrent capable devices:
667 * If persistent_go, then no new.
668 * If GO, then no client.
669 * If client, then no GO.
670 */
671 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
672 if (go_wpa_s)
673 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
674 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
675 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
676 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
677
678 wpa_printf(MSG_DEBUG,
679 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
680 go_wpa_s, owned_members, cli_wpa_s, persistent_go);
681
682 /* If not concurrent, restrict our choices */
683 if (p2p_no_group_iface) {
684 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
685
686 if (cli_wpa_s)
687 return P2PS_SETUP_NONE;
688
689 if (go_wpa_s) {
690 if (role == P2PS_SETUP_CLIENT ||
691 incoming == P2PS_SETUP_GROUP_OWNER ||
692 p2p_client_limit_reached(go_wpa_s->p2p_group))
693 return P2PS_SETUP_NONE;
694
695 return P2PS_SETUP_GROUP_OWNER;
696 }
697
698 if (persistent_go) {
699 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
700 if (!incoming)
701 return P2PS_SETUP_GROUP_OWNER |
702 P2PS_SETUP_CLIENT;
703 if (incoming == P2PS_SETUP_NEW) {
704 u8 r;
705
706 if (os_get_random(&r, sizeof(r)) < 0 ||
707 (r & 1))
708 return P2PS_SETUP_CLIENT;
709 return P2PS_SETUP_GROUP_OWNER;
710 }
711 }
712 }
713 }
714
715 /* If a required role has been specified, handle it here */
716 if (role && role != P2PS_SETUP_NEW) {
717 switch (incoming) {
718 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
719 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
720 /*
721 * Peer has an active GO, so if the role allows it and
722 * we do not have any active roles, become client.
723 */
724 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
725 !cli_wpa_s)
726 return P2PS_SETUP_CLIENT;
727
728 /* fall through */
729
730 case P2PS_SETUP_NONE:
731 case P2PS_SETUP_NEW:
732 conncap = role;
733 goto grp_owner;
734
735 case P2PS_SETUP_GROUP_OWNER:
736 /*
737 * Must be a complimentary role - cannot be a client to
738 * more than one peer.
739 */
740 if (incoming == role || cli_wpa_s)
741 return P2PS_SETUP_NONE;
742
743 return P2PS_SETUP_CLIENT;
744
745 case P2PS_SETUP_CLIENT:
746 /* Must be a complimentary role */
747 if (incoming != role) {
748 conncap = P2PS_SETUP_GROUP_OWNER;
749 goto grp_owner;
750 }
751 /* fall through */
752
753 default:
754 return P2PS_SETUP_NONE;
755 }
756 }
757
758 /*
759 * For now, we only will support ownership of one group, and being a
760 * client of one group. Therefore, if we have either an existing GO
761 * group, or an existing client group, we will not do a new GO
762 * negotiation, but rather try to re-use the existing groups.
763 */
764 switch (incoming) {
765 case P2PS_SETUP_NONE:
766 case P2PS_SETUP_NEW:
767 if (cli_wpa_s)
768 conncap = P2PS_SETUP_GROUP_OWNER;
769 else if (!owned_members)
770 conncap = P2PS_SETUP_NEW;
771 else if (incoming == P2PS_SETUP_NONE)
772 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
773 else
774 conncap = P2PS_SETUP_CLIENT;
775 break;
776
777 case P2PS_SETUP_CLIENT:
778 conncap = P2PS_SETUP_GROUP_OWNER;
779 break;
780
781 case P2PS_SETUP_GROUP_OWNER:
782 if (!cli_wpa_s)
783 conncap = P2PS_SETUP_CLIENT;
784 break;
785
786 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
787 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
788 if (cli_wpa_s)
789 conncap = P2PS_SETUP_GROUP_OWNER;
790 else {
791 u8 r;
792
793 if (os_get_random(&r, sizeof(r)) < 0 ||
794 (r & 1))
795 conncap = P2PS_SETUP_CLIENT;
796 else
797 conncap = P2PS_SETUP_GROUP_OWNER;
798 }
799 break;
800
801 default:
802 return P2PS_SETUP_NONE;
803 }
804
805 grp_owner:
806 if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
807 (!incoming && (conncap & P2PS_SETUP_NEW))) {
808 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
809 conncap &= ~P2PS_SETUP_GROUP_OWNER;
810
811 s = wpas_p2p_get_persistent_go(wpa_s);
812 if (!s && !go_wpa_s && p2p_no_group_iface) {
813 p2p_set_intended_addr(wpa_s->global->p2p,
814 wpa_s->p2p_mgmt ?
815 wpa_s->parent->own_addr :
816 wpa_s->own_addr);
817 } else if (!s && !go_wpa_s) {
818 if (wpas_p2p_add_group_interface(wpa_s,
819 WPA_IF_P2P_GROUP) < 0) {
820 wpa_printf(MSG_ERROR,
821 "P2P: Failed to allocate a new interface for the group");
822 return P2PS_SETUP_NONE;
823 }
824 wpa_s->global->pending_group_iface_for_p2ps = 1;
825 p2p_set_intended_addr(wpa_s->global->p2p,
826 wpa_s->pending_interface_addr);
827 }
828 }
829
830 return conncap;
831 }
832
833
834 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
835 enum p2p_group_removal_reason removal_reason)
836 {
837 struct wpa_ssid *ssid;
838 char *gtype;
839 const char *reason;
840
841 ssid = wpa_s->current_ssid;
842 if (ssid == NULL) {
843 /*
844 * The current SSID was not known, but there may still be a
845 * pending P2P group interface waiting for provisioning or a
846 * P2P group that is trying to reconnect.
847 */
848 ssid = wpa_s->conf->ssid;
849 while (ssid) {
850 if (ssid->p2p_group && ssid->disabled != 2)
851 break;
852 ssid = ssid->next;
853 }
854 if (ssid == NULL &&
855 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
856 {
857 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
858 "not found");
859 return -1;
860 }
861 }
862 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
863 gtype = "GO";
864 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
865 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
866 wpa_s->reassociate = 0;
867 wpa_s->disconnected = 1;
868 gtype = "client";
869 } else
870 gtype = "GO";
871
872 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
873 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
874
875 if (os_strcmp(gtype, "client") == 0) {
876 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
877 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
878 wpa_s, NULL)) {
879 wpa_printf(MSG_DEBUG,
880 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
881 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
882 eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
883 wpa_s, NULL);
884 }
885 }
886
887 if (wpa_s->cross_connect_in_use) {
888 wpa_s->cross_connect_in_use = 0;
889 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
890 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
891 wpa_s->ifname, wpa_s->cross_connect_uplink);
892 }
893 switch (removal_reason) {
894 case P2P_GROUP_REMOVAL_REQUESTED:
895 reason = " reason=REQUESTED";
896 break;
897 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
898 reason = " reason=FORMATION_FAILED";
899 break;
900 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
901 reason = " reason=IDLE";
902 break;
903 case P2P_GROUP_REMOVAL_UNAVAILABLE:
904 reason = " reason=UNAVAILABLE";
905 break;
906 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
907 reason = " reason=GO_ENDING_SESSION";
908 break;
909 case P2P_GROUP_REMOVAL_PSK_FAILURE:
910 reason = " reason=PSK_FAILURE";
911 break;
912 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
913 reason = " reason=FREQ_CONFLICT";
914 break;
915 default:
916 reason = "";
917 break;
918 }
919 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
920 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
921 P2P_EVENT_GROUP_REMOVED "%s %s%s",
922 wpa_s->ifname, gtype, reason);
923 }
924
925 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
926 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
927 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
928 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
929 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
930 wpa_s->p2pdev, NULL) > 0) {
931 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
932 "timeout");
933 wpa_s->p2p_in_provisioning = 0;
934 wpas_p2p_group_formation_failed(wpa_s, 1);
935 }
936
937 wpa_s->p2p_in_invitation = 0;
938 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
939 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
940
941 /*
942 * Make sure wait for the first client does not remain active after the
943 * group has been removed.
944 */
945 wpa_s->global->p2p_go_wait_client.sec = 0;
946
947 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
948 struct wpa_global *global;
949 char *ifname;
950 enum wpa_driver_if_type type;
951 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
952 wpa_s->ifname);
953 global = wpa_s->global;
954 ifname = os_strdup(wpa_s->ifname);
955 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
956 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
957 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
958 wpa_s = global->ifaces;
959 if (wpa_s && ifname)
960 wpa_drv_if_remove(wpa_s, type, ifname);
961 os_free(ifname);
962 return 1;
963 }
964
965 /*
966 * The primary interface was used for P2P group operations, so
967 * need to reset its p2pdev.
968 */
969 wpa_s->p2pdev = wpa_s->parent;
970
971 if (!wpa_s->p2p_go_group_formation_completed) {
972 wpa_s->global->p2p_group_formation = NULL;
973 wpa_s->p2p_in_provisioning = 0;
974 }
975
976 wpa_s->show_group_started = 0;
977 os_free(wpa_s->go_params);
978 wpa_s->go_params = NULL;
979
980 os_free(wpa_s->p2p_group_common_freqs);
981 wpa_s->p2p_group_common_freqs = NULL;
982 wpa_s->p2p_group_common_freqs_num = 0;
983
984 wpa_s->waiting_presence_resp = 0;
985
986 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
987 if (ssid && (ssid->p2p_group ||
988 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
989 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
990 int id = ssid->id;
991 if (ssid == wpa_s->current_ssid) {
992 wpa_sm_set_config(wpa_s->wpa, NULL);
993 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
994 wpa_s->current_ssid = NULL;
995 }
996 /*
997 * Networks objects created during any P2P activities are not
998 * exposed out as they might/will confuse certain non-P2P aware
999 * applications since these network objects won't behave like
1000 * regular ones.
1001 *
1002 * Likewise, we don't send out network removed signals for such
1003 * network objects.
1004 */
1005 wpa_config_remove_network(wpa_s->conf, id);
1006 wpa_supplicant_clear_status(wpa_s);
1007 wpa_supplicant_cancel_sched_scan(wpa_s);
1008 } else {
1009 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1010 "found");
1011 }
1012 if (wpa_s->ap_iface)
1013 wpa_supplicant_ap_deinit(wpa_s);
1014 else
1015 wpa_drv_deinit_p2p_cli(wpa_s);
1016
1017 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1018
1019 return 0;
1020 }
1021
1022
1023 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1024 u8 *go_dev_addr,
1025 const u8 *ssid, size_t ssid_len)
1026 {
1027 struct wpa_bss *bss;
1028 const u8 *bssid;
1029 struct wpabuf *p2p;
1030 u8 group_capab;
1031 const u8 *addr;
1032
1033 if (wpa_s->go_params)
1034 bssid = wpa_s->go_params->peer_interface_addr;
1035 else
1036 bssid = wpa_s->bssid;
1037
1038 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1039 if (bss == NULL && wpa_s->go_params &&
1040 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1041 bss = wpa_bss_get_p2p_dev_addr(
1042 wpa_s, wpa_s->go_params->peer_device_addr);
1043 if (bss == NULL) {
1044 u8 iface_addr[ETH_ALEN];
1045 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1046 iface_addr) == 0)
1047 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1048 }
1049 if (bss == NULL) {
1050 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1051 "group is persistent - BSS " MACSTR " not found",
1052 MAC2STR(bssid));
1053 return 0;
1054 }
1055
1056 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1057 if (p2p == NULL)
1058 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1059 P2P_IE_VENDOR_TYPE);
1060 if (p2p == NULL) {
1061 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1062 "group is persistent - BSS " MACSTR
1063 " did not include P2P IE", MAC2STR(bssid));
1064 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1065 (u8 *) (bss + 1), bss->ie_len);
1066 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1067 ((u8 *) bss + 1) + bss->ie_len,
1068 bss->beacon_ie_len);
1069 return 0;
1070 }
1071
1072 group_capab = p2p_get_group_capab(p2p);
1073 addr = p2p_get_go_dev_addr(p2p);
1074 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1075 "group_capab=0x%x", group_capab);
1076 if (addr) {
1077 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1078 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1079 MAC2STR(addr));
1080 } else
1081 os_memset(go_dev_addr, 0, ETH_ALEN);
1082 wpabuf_free(p2p);
1083
1084 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1085 "go_dev_addr=" MACSTR,
1086 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1087
1088 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP);
1089 }
1090
1091
1092 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1093 struct wpa_ssid *ssid,
1094 const u8 *go_dev_addr)
1095 {
1096 struct wpa_ssid *s;
1097 int changed = 0;
1098
1099 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1100 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1101 for (s = wpa_s->conf->ssid; s; s = s->next) {
1102 if (s->disabled == 2 &&
1103 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1104 s->ssid_len == ssid->ssid_len &&
1105 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1106 break;
1107 }
1108
1109 if (s) {
1110 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1111 "entry");
1112 if (ssid->passphrase && !s->passphrase)
1113 changed = 1;
1114 else if (ssid->passphrase && s->passphrase &&
1115 os_strcmp(ssid->passphrase, s->passphrase) != 0)
1116 changed = 1;
1117 } else {
1118 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1119 "entry");
1120 changed = 1;
1121 s = wpa_config_add_network(wpa_s->conf);
1122 if (s == NULL)
1123 return -1;
1124
1125 /*
1126 * Instead of network_added we emit persistent_group_added
1127 * notification. Also to keep the defense checks in
1128 * persistent_group obj registration method, we set the
1129 * relevant flags in s to designate it as a persistent group.
1130 */
1131 s->p2p_group = 1;
1132 s->p2p_persistent_group = 1;
1133 wpas_notify_persistent_group_added(wpa_s, s);
1134 wpa_config_set_network_defaults(s);
1135 }
1136
1137 s->p2p_group = 1;
1138 s->p2p_persistent_group = 1;
1139 s->disabled = 2;
1140 s->bssid_set = 1;
1141 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1142 s->mode = ssid->mode;
1143 s->auth_alg = WPA_AUTH_ALG_OPEN;
1144 s->key_mgmt = WPA_KEY_MGMT_PSK;
1145 s->proto = WPA_PROTO_RSN;
1146 s->pbss = ssid->pbss;
1147 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1148 s->export_keys = 1;
1149 if (ssid->passphrase) {
1150 os_free(s->passphrase);
1151 s->passphrase = os_strdup(ssid->passphrase);
1152 }
1153 if (ssid->psk_set) {
1154 s->psk_set = 1;
1155 os_memcpy(s->psk, ssid->psk, 32);
1156 }
1157 if (s->passphrase && !s->psk_set)
1158 wpa_config_update_psk(s);
1159 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1160 os_free(s->ssid);
1161 s->ssid = os_malloc(ssid->ssid_len);
1162 }
1163 if (s->ssid) {
1164 s->ssid_len = ssid->ssid_len;
1165 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1166 }
1167 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1168 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1169 wpa_s->global->add_psk = NULL;
1170 changed = 1;
1171 }
1172
1173 if (changed && wpa_s->conf->update_config &&
1174 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1175 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1176 }
1177
1178 return s->id;
1179 }
1180
1181
1182 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1183 const u8 *addr)
1184 {
1185 struct wpa_ssid *ssid, *s;
1186 u8 *n;
1187 size_t i;
1188 int found = 0;
1189 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1190
1191 ssid = wpa_s->current_ssid;
1192 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1193 !ssid->p2p_persistent_group)
1194 return;
1195
1196 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1197 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1198 continue;
1199
1200 if (s->ssid_len == ssid->ssid_len &&
1201 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1202 break;
1203 }
1204
1205 if (s == NULL)
1206 return;
1207
1208 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1209 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1210 ETH_ALEN) != 0)
1211 continue;
1212
1213 if (i == s->num_p2p_clients - 1)
1214 return; /* already the most recent entry */
1215
1216 /* move the entry to mark it most recent */
1217 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1218 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1219 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1220 os_memcpy(s->p2p_client_list +
1221 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1222 ETH_ALEN);
1223 os_memset(s->p2p_client_list +
1224 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1225 0xff, ETH_ALEN);
1226 found = 1;
1227 break;
1228 }
1229
1230 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1231 n = os_realloc_array(s->p2p_client_list,
1232 s->num_p2p_clients + 1, 2 * ETH_ALEN);
1233 if (n == NULL)
1234 return;
1235 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1236 ETH_ALEN);
1237 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1238 0xff, ETH_ALEN);
1239 s->p2p_client_list = n;
1240 s->num_p2p_clients++;
1241 } else if (!found && s->p2p_client_list) {
1242 /* Not enough room for an additional entry - drop the oldest
1243 * entry */
1244 os_memmove(s->p2p_client_list,
1245 s->p2p_client_list + 2 * ETH_ALEN,
1246 (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1247 os_memcpy(s->p2p_client_list +
1248 (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1249 addr, ETH_ALEN);
1250 os_memset(s->p2p_client_list +
1251 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1252 0xff, ETH_ALEN);
1253 }
1254
1255 if (p2p_wpa_s->conf->update_config &&
1256 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1257 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1258 }
1259
1260
1261 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1262 int go, struct wpa_ssid *ssid, int freq,
1263 const u8 *psk, const char *passphrase,
1264 const u8 *go_dev_addr, int persistent,
1265 const char *extra)
1266 {
1267 const char *ssid_txt;
1268 char psk_txt[65];
1269
1270 if (psk)
1271 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1272 else
1273 psk_txt[0] = '\0';
1274
1275 if (ssid)
1276 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1277 else
1278 ssid_txt = "";
1279
1280 if (passphrase && passphrase[0] == '\0')
1281 passphrase = NULL;
1282
1283 /*
1284 * Include PSK/passphrase only in the control interface message and
1285 * leave it out from the debug log entry.
1286 */
1287 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1288 P2P_EVENT_GROUP_STARTED
1289 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1290 MACSTR "%s%s",
1291 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1292 psk ? " psk=" : "", psk_txt,
1293 passphrase ? " passphrase=\"" : "",
1294 passphrase ? passphrase : "",
1295 passphrase ? "\"" : "",
1296 MAC2STR(go_dev_addr),
1297 persistent ? " [PERSISTENT]" : "", extra);
1298 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1299 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1300 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1301 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1302 extra);
1303 }
1304
1305
1306 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1307 int success, int already_deleted)
1308 {
1309 struct wpa_ssid *ssid;
1310 int client;
1311 int persistent;
1312 u8 go_dev_addr[ETH_ALEN];
1313
1314 /*
1315 * This callback is likely called for the main interface. Update wpa_s
1316 * to use the group interface if a new interface was created for the
1317 * group.
1318 */
1319 if (wpa_s->global->p2p_group_formation)
1320 wpa_s = wpa_s->global->p2p_group_formation;
1321 if (wpa_s->p2p_go_group_formation_completed) {
1322 wpa_s->global->p2p_group_formation = NULL;
1323 wpa_s->p2p_in_provisioning = 0;
1324 } else if (wpa_s->p2p_in_provisioning && !success) {
1325 wpa_msg(wpa_s, MSG_DEBUG,
1326 "P2P: Stop provisioning state due to failure");
1327 wpa_s->p2p_in_provisioning = 0;
1328 }
1329 wpa_s->p2p_in_invitation = 0;
1330 wpa_s->group_formation_reported = 1;
1331
1332 if (!success) {
1333 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1334 P2P_EVENT_GROUP_FORMATION_FAILURE);
1335 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1336 if (already_deleted)
1337 return;
1338 wpas_p2p_group_delete(wpa_s,
1339 P2P_GROUP_REMOVAL_FORMATION_FAILED);
1340 return;
1341 }
1342
1343 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1344 P2P_EVENT_GROUP_FORMATION_SUCCESS);
1345
1346 ssid = wpa_s->current_ssid;
1347 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1348 ssid->mode = WPAS_MODE_P2P_GO;
1349 p2p_group_notif_formation_done(wpa_s->p2p_group);
1350 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1351 }
1352
1353 persistent = 0;
1354 if (ssid) {
1355 client = ssid->mode == WPAS_MODE_INFRA;
1356 if (ssid->mode == WPAS_MODE_P2P_GO) {
1357 persistent = ssid->p2p_persistent_group;
1358 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1359 ETH_ALEN);
1360 } else
1361 persistent = wpas_p2p_persistent_group(wpa_s,
1362 go_dev_addr,
1363 ssid->ssid,
1364 ssid->ssid_len);
1365 } else {
1366 client = wpa_s->p2p_group_interface ==
1367 P2P_GROUP_INTERFACE_CLIENT;
1368 os_memset(go_dev_addr, 0, ETH_ALEN);
1369 }
1370
1371 wpa_s->show_group_started = 0;
1372 if (client) {
1373 /*
1374 * Indicate event only after successfully completed 4-way
1375 * handshake, i.e., when the interface is ready for data
1376 * packets.
1377 */
1378 wpa_s->show_group_started = 1;
1379 } else {
1380 wpas_p2p_group_started(wpa_s, 1, ssid,
1381 ssid ? ssid->frequency : 0,
1382 ssid && ssid->passphrase == NULL &&
1383 ssid->psk_set ? ssid->psk : NULL,
1384 ssid ? ssid->passphrase : NULL,
1385 go_dev_addr, persistent, "");
1386 wpas_p2p_cross_connect_setup(wpa_s);
1387 wpas_p2p_set_group_idle_timeout(wpa_s);
1388 }
1389
1390 if (persistent)
1391 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1392 ssid, go_dev_addr);
1393 else {
1394 os_free(wpa_s->global->add_psk);
1395 wpa_s->global->add_psk = NULL;
1396 }
1397
1398 if (!client) {
1399 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL);
1400 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1401 }
1402 }
1403
1404
1405 struct send_action_work {
1406 unsigned int freq;
1407 u8 dst[ETH_ALEN];
1408 u8 src[ETH_ALEN];
1409 u8 bssid[ETH_ALEN];
1410 size_t len;
1411 unsigned int wait_time;
1412 u8 buf[0];
1413 };
1414
1415
1416 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1417 {
1418 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1419
1420 wpa_printf(MSG_DEBUG,
1421 "P2P: Free Action frame radio work @%p (freq=%u dst="
1422 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1423 wpa_s->p2p_send_action_work, awork->freq,
1424 MAC2STR(awork->dst), MAC2STR(awork->src),
1425 MAC2STR(awork->bssid), awork->wait_time);
1426 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1427 awork->buf, awork->len);
1428 os_free(awork);
1429 wpa_s->p2p_send_action_work->ctx = NULL;
1430 radio_work_done(wpa_s->p2p_send_action_work);
1431 wpa_s->p2p_send_action_work = NULL;
1432 }
1433
1434
1435 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1436 void *timeout_ctx)
1437 {
1438 struct wpa_supplicant *wpa_s = eloop_ctx;
1439
1440 if (!wpa_s->p2p_send_action_work)
1441 return;
1442
1443 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1444 wpas_p2p_free_send_action_work(wpa_s);
1445 }
1446
1447
1448 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1449 {
1450 if (wpa_s->p2p_send_action_work) {
1451 struct send_action_work *awork;
1452
1453 awork = wpa_s->p2p_send_action_work->ctx;
1454 wpa_printf(MSG_DEBUG,
1455 "P2P: Clear Action TX work @%p (wait_time=%u)",
1456 wpa_s->p2p_send_action_work, awork->wait_time);
1457 if (awork->wait_time == 0) {
1458 wpas_p2p_free_send_action_work(wpa_s);
1459 } else {
1460 /*
1461 * In theory, this should not be needed, but number of
1462 * places in the P2P code is still using non-zero wait
1463 * time for the last Action frame in the sequence and
1464 * some of these do not call send_action_done().
1465 */
1466 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1467 wpa_s, NULL);
1468 eloop_register_timeout(
1469 0, awork->wait_time * 1000,
1470 wpas_p2p_send_action_work_timeout,
1471 wpa_s, NULL);
1472 }
1473 }
1474 }
1475
1476
1477 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1478 unsigned int freq,
1479 const u8 *dst, const u8 *src,
1480 const u8 *bssid,
1481 const u8 *data, size_t data_len,
1482 enum offchannel_send_action_result
1483 result)
1484 {
1485 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1486
1487 wpas_p2p_action_tx_clear(wpa_s);
1488
1489 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1490 return;
1491
1492 switch (result) {
1493 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1494 res = P2P_SEND_ACTION_SUCCESS;
1495 break;
1496 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1497 res = P2P_SEND_ACTION_NO_ACK;
1498 break;
1499 case OFFCHANNEL_SEND_ACTION_FAILED:
1500 res = P2P_SEND_ACTION_FAILED;
1501 break;
1502 }
1503
1504 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1505
1506 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1507 wpa_s->pending_pd_before_join &&
1508 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1509 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1510 wpa_s->p2p_fallback_to_go_neg) {
1511 wpa_s->pending_pd_before_join = 0;
1512 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1513 "during p2p_connect-auto");
1514 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1515 P2P_EVENT_FALLBACK_TO_GO_NEG
1516 "reason=no-ACK-to-PD-Req");
1517 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1518 return;
1519 }
1520 }
1521
1522
1523 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1524 {
1525 struct wpa_supplicant *wpa_s = work->wpa_s;
1526 struct send_action_work *awork = work->ctx;
1527
1528 if (deinit) {
1529 if (work->started) {
1530 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1531 wpa_s, NULL);
1532 wpa_s->p2p_send_action_work = NULL;
1533 offchannel_send_action_done(wpa_s);
1534 }
1535 os_free(awork);
1536 return;
1537 }
1538
1539 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1540 awork->bssid, awork->buf, awork->len,
1541 awork->wait_time,
1542 wpas_p2p_send_action_tx_status, 1) < 0) {
1543 os_free(awork);
1544 radio_work_done(work);
1545 return;
1546 }
1547 wpa_s->p2p_send_action_work = work;
1548 }
1549
1550
1551 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1552 unsigned int freq, const u8 *dst,
1553 const u8 *src, const u8 *bssid, const u8 *buf,
1554 size_t len, unsigned int wait_time)
1555 {
1556 struct send_action_work *awork;
1557
1558 if (wpa_s->p2p_send_action_work) {
1559 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1560 return -1;
1561 }
1562
1563 awork = os_zalloc(sizeof(*awork) + len);
1564 if (awork == NULL)
1565 return -1;
1566
1567 awork->freq = freq;
1568 os_memcpy(awork->dst, dst, ETH_ALEN);
1569 os_memcpy(awork->src, src, ETH_ALEN);
1570 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1571 awork->len = len;
1572 awork->wait_time = wait_time;
1573 os_memcpy(awork->buf, buf, len);
1574
1575 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1576 wpas_send_action_cb, awork) < 0) {
1577 os_free(awork);
1578 return -1;
1579 }
1580
1581 return 0;
1582 }
1583
1584
1585 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1586 const u8 *src, const u8 *bssid, const u8 *buf,
1587 size_t len, unsigned int wait_time)
1588 {
1589 struct wpa_supplicant *wpa_s = ctx;
1590 int listen_freq = -1, send_freq = -1;
1591
1592 if (wpa_s->p2p_listen_work)
1593 listen_freq = wpa_s->p2p_listen_work->freq;
1594 if (wpa_s->p2p_send_action_work)
1595 send_freq = wpa_s->p2p_send_action_work->freq;
1596 if (listen_freq != (int) freq && send_freq != (int) freq) {
1597 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1598 listen_freq, send_freq);
1599 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1600 len, wait_time);
1601 }
1602
1603 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1604 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1605 wait_time,
1606 wpas_p2p_send_action_tx_status, 1);
1607 }
1608
1609
1610 static void wpas_send_action_done(void *ctx)
1611 {
1612 struct wpa_supplicant *wpa_s = ctx;
1613
1614 if (wpa_s->p2p_send_action_work) {
1615 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1616 wpa_s, NULL);
1617 os_free(wpa_s->p2p_send_action_work->ctx);
1618 radio_work_done(wpa_s->p2p_send_action_work);
1619 wpa_s->p2p_send_action_work = NULL;
1620 }
1621
1622 offchannel_send_action_done(wpa_s);
1623 }
1624
1625
1626 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1627 struct p2p_go_neg_results *params)
1628 {
1629 if (wpa_s->go_params == NULL) {
1630 wpa_s->go_params = os_malloc(sizeof(*params));
1631 if (wpa_s->go_params == NULL)
1632 return -1;
1633 }
1634 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1635 return 0;
1636 }
1637
1638
1639 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1640 struct p2p_go_neg_results *res)
1641 {
1642 wpa_s->group_formation_reported = 0;
1643 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1644 " dev_addr " MACSTR " wps_method %d",
1645 MAC2STR(res->peer_interface_addr),
1646 MAC2STR(res->peer_device_addr), res->wps_method);
1647 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1648 res->ssid, res->ssid_len);
1649 wpa_supplicant_ap_deinit(wpa_s);
1650 wpas_copy_go_neg_results(wpa_s, res);
1651 if (res->wps_method == WPS_PBC) {
1652 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1653 #ifdef CONFIG_WPS_NFC
1654 } else if (res->wps_method == WPS_NFC) {
1655 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1656 res->peer_interface_addr,
1657 wpa_s->p2pdev->p2p_oob_dev_pw,
1658 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1659 wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1660 DEV_PW_NFC_CONNECTION_HANDOVER ?
1661 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1662 NULL,
1663 NULL, 0, 0);
1664 #endif /* CONFIG_WPS_NFC */
1665 } else {
1666 u16 dev_pw_id = DEV_PW_DEFAULT;
1667 if (wpa_s->p2p_wps_method == WPS_P2PS)
1668 dev_pw_id = DEV_PW_P2PS_DEFAULT;
1669 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1670 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1671 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1672 wpa_s->p2p_pin, 1, dev_pw_id);
1673 }
1674 }
1675
1676
1677 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1678 struct wpa_ssid *ssid)
1679 {
1680 struct wpa_ssid *persistent;
1681 struct psk_list_entry *psk;
1682 struct hostapd_data *hapd;
1683
1684 if (!wpa_s->ap_iface)
1685 return;
1686
1687 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1688 ssid->ssid_len);
1689 if (persistent == NULL)
1690 return;
1691
1692 hapd = wpa_s->ap_iface->bss[0];
1693
1694 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1695 list) {
1696 struct hostapd_wpa_psk *hpsk;
1697
1698 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1699 MACSTR " psk=%d",
1700 MAC2STR(psk->addr), psk->p2p);
1701 hpsk = os_zalloc(sizeof(*hpsk));
1702 if (hpsk == NULL)
1703 break;
1704 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1705 if (psk->p2p)
1706 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1707 else
1708 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1709 hpsk->next = hapd->conf->ssid.wpa_psk;
1710 hapd->conf->ssid.wpa_psk = hpsk;
1711 }
1712 }
1713
1714
1715 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1716 {
1717 char buf[20 + P2P_MAX_CHANNELS * 6];
1718 char *pos, *end;
1719 unsigned int i;
1720 int res;
1721
1722 pos = buf;
1723 end = pos + sizeof(buf);
1724 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
1725 res = os_snprintf(pos, end - pos, " %d",
1726 wpa_s->p2p_group_common_freqs[i]);
1727 if (os_snprintf_error(end - pos, res))
1728 break;
1729 pos += res;
1730 }
1731 *pos = '\0';
1732
1733 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf);
1734 }
1735
1736
1737 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1738 struct p2p_go_neg_results *params)
1739 {
1740 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1741
1742 wpa_s->p2p_group_common_freqs_num = 0;
1743 os_free(wpa_s->p2p_group_common_freqs);
1744 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1745 if (!wpa_s->p2p_group_common_freqs)
1746 return;
1747
1748 for (i = 0; i < len; i++) {
1749 if (!wpa_s->go_params->freq_list[i])
1750 break;
1751 wpa_s->p2p_group_common_freqs[i] =
1752 wpa_s->go_params->freq_list[i];
1753 }
1754 wpa_s->p2p_group_common_freqs_num = i;
1755 }
1756
1757
1758 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1759 {
1760 #ifndef CONFIG_NO_CONFIG_WRITE
1761 if (wpa_s->p2pdev->conf->update_config &&
1762 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1763 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1764 #endif /* CONFIG_NO_CONFIG_WRITE */
1765 }
1766
1767
1768 static void p2p_go_configured(void *ctx, void *data)
1769 {
1770 struct wpa_supplicant *wpa_s = ctx;
1771 struct p2p_go_neg_results *params = data;
1772 struct wpa_ssid *ssid;
1773
1774 wpa_s->ap_configured_cb = NULL;
1775 wpa_s->ap_configured_cb_ctx = NULL;
1776 wpa_s->ap_configured_cb_data = NULL;
1777 if (!wpa_s->go_params) {
1778 wpa_printf(MSG_ERROR,
1779 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1780 return;
1781 }
1782
1783 p2p_go_save_group_common_freqs(wpa_s, params);
1784 p2p_go_dump_common_freqs(wpa_s);
1785
1786 ssid = wpa_s->current_ssid;
1787 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1788 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1789 if (wpa_s->global->p2p_group_formation == wpa_s)
1790 wpa_s->global->p2p_group_formation = NULL;
1791 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1792 params->passphrase[0] == '\0' ?
1793 params->psk : NULL,
1794 params->passphrase,
1795 wpa_s->global->p2p_dev_addr,
1796 params->persistent_group, "");
1797 wpa_s->group_formation_reported = 1;
1798
1799 if (wpa_s->p2pdev->p2ps_method_config_any) {
1800 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1801 wpa_dbg(wpa_s, MSG_DEBUG,
1802 "P2PS: Setting default PIN for ANY");
1803 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1804 "12345670", NULL, 0,
1805 0);
1806 } else {
1807 wpa_dbg(wpa_s, MSG_DEBUG,
1808 "P2PS: Setting default PIN for " MACSTR,
1809 MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1810 wpa_supplicant_ap_wps_pin(
1811 wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1812 "12345670", NULL, 0, 0);
1813 }
1814 wpa_s->p2pdev->p2ps_method_config_any = 0;
1815 }
1816
1817 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1818 if (params->persistent_group) {
1819 wpas_p2p_store_persistent_group(
1820 wpa_s->p2pdev, ssid,
1821 wpa_s->global->p2p_dev_addr);
1822 wpas_p2p_add_psk_list(wpa_s, ssid);
1823 }
1824
1825 wpas_notify_p2p_group_started(wpa_s, ssid,
1826 params->persistent_group, 0,
1827 NULL);
1828 wpas_p2p_cross_connect_setup(wpa_s);
1829 wpas_p2p_set_group_idle_timeout(wpa_s);
1830
1831 if (wpa_s->p2p_first_connection_timeout) {
1832 wpa_dbg(wpa_s, MSG_DEBUG,
1833 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1834 wpa_s->p2p_first_connection_timeout);
1835 wpa_s->p2p_go_group_formation_completed = 0;
1836 wpa_s->global->p2p_group_formation = wpa_s;
1837 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1838 wpa_s->p2pdev, NULL);
1839 eloop_register_timeout(
1840 wpa_s->p2p_first_connection_timeout, 0,
1841 wpas_p2p_group_formation_timeout,
1842 wpa_s->p2pdev, NULL);
1843 }
1844
1845 return;
1846 }
1847
1848 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1849 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1850 params->peer_interface_addr)) {
1851 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1852 "filtering");
1853 return;
1854 }
1855 if (params->wps_method == WPS_PBC) {
1856 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1857 params->peer_device_addr);
1858 #ifdef CONFIG_WPS_NFC
1859 } else if (params->wps_method == WPS_NFC) {
1860 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1861 DEV_PW_NFC_CONNECTION_HANDOVER &&
1862 !wpa_s->p2pdev->p2p_oob_dev_pw) {
1863 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1864 return;
1865 }
1866 wpas_ap_wps_add_nfc_pw(
1867 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1868 wpa_s->p2pdev->p2p_oob_dev_pw,
1869 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1870 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1871 #endif /* CONFIG_WPS_NFC */
1872 } else if (wpa_s->p2p_pin[0])
1873 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1874 wpa_s->p2p_pin, NULL, 0, 0);
1875 os_free(wpa_s->go_params);
1876 wpa_s->go_params = NULL;
1877 }
1878
1879
1880 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1881 struct p2p_go_neg_results *params,
1882 int group_formation)
1883 {
1884 struct wpa_ssid *ssid;
1885
1886 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1887 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1888 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1889 "results");
1890 return;
1891 }
1892
1893 ssid = wpa_config_add_network(wpa_s->conf);
1894 if (ssid == NULL) {
1895 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1896 return;
1897 }
1898
1899 wpa_s->show_group_started = 0;
1900 wpa_s->p2p_go_group_formation_completed = 0;
1901 wpa_s->group_formation_reported = 0;
1902 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1903
1904 wpa_config_set_network_defaults(ssid);
1905 ssid->temporary = 1;
1906 ssid->p2p_group = 1;
1907 ssid->p2p_persistent_group = !!params->persistent_group;
1908 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1909 WPAS_MODE_P2P_GO;
1910 ssid->frequency = params->freq;
1911 ssid->ht40 = params->ht40;
1912 ssid->vht = params->vht;
1913 ssid->max_oper_chwidth = params->max_oper_chwidth;
1914 ssid->vht_center_freq2 = params->vht_center_freq2;
1915 ssid->ssid = os_zalloc(params->ssid_len + 1);
1916 if (ssid->ssid) {
1917 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1918 ssid->ssid_len = params->ssid_len;
1919 }
1920 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1921 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1922 ssid->proto = WPA_PROTO_RSN;
1923 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1924 ssid->group_cipher = WPA_CIPHER_CCMP;
1925 if (params->freq > 56160) {
1926 /*
1927 * Enable GCMP instead of CCMP as pairwise_cipher and
1928 * group_cipher in 60 GHz.
1929 */
1930 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1931 ssid->group_cipher = WPA_CIPHER_GCMP;
1932 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1933 ssid->pbss = 1;
1934 }
1935 if (os_strlen(params->passphrase) > 0) {
1936 ssid->passphrase = os_strdup(params->passphrase);
1937 if (ssid->passphrase == NULL) {
1938 wpa_msg_global(wpa_s, MSG_ERROR,
1939 "P2P: Failed to copy passphrase for GO");
1940 wpa_config_remove_network(wpa_s->conf, ssid->id);
1941 return;
1942 }
1943 } else
1944 ssid->passphrase = NULL;
1945 ssid->psk_set = params->psk_set;
1946 if (ssid->psk_set)
1947 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1948 else if (ssid->passphrase)
1949 wpa_config_update_psk(ssid);
1950 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1951
1952 wpa_s->ap_configured_cb = p2p_go_configured;
1953 wpa_s->ap_configured_cb_ctx = wpa_s;
1954 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1955 wpa_s->scan_req = NORMAL_SCAN_REQ;
1956 wpa_s->connect_without_scan = ssid;
1957 wpa_s->reassociate = 1;
1958 wpa_s->disconnected = 0;
1959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1960 "start GO)");
1961 wpa_supplicant_req_scan(wpa_s, 0, 0);
1962 }
1963
1964
1965 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1966 const struct wpa_supplicant *src)
1967 {
1968 struct wpa_config *d;
1969 const struct wpa_config *s;
1970
1971 d = dst->conf;
1972 s = src->conf;
1973
1974 #define C(n) \
1975 do { \
1976 if (s->n && !d->n) \
1977 d->n = os_strdup(s->n); \
1978 } while (0)
1979
1980 C(device_name);
1981 C(manufacturer);
1982 C(model_name);
1983 C(model_number);
1984 C(serial_number);
1985 C(config_methods);
1986 #undef C
1987
1988 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1989 os_memcpy(d->sec_device_type, s->sec_device_type,
1990 sizeof(d->sec_device_type));
1991 d->num_sec_device_types = s->num_sec_device_types;
1992
1993 d->p2p_group_idle = s->p2p_group_idle;
1994 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1995 d->p2p_intra_bss = s->p2p_intra_bss;
1996 d->persistent_reconnect = s->persistent_reconnect;
1997 d->max_num_sta = s->max_num_sta;
1998 d->pbc_in_m1 = s->pbc_in_m1;
1999 d->ignore_old_scan_res = s->ignore_old_scan_res;
2000 d->beacon_int = s->beacon_int;
2001 d->dtim_period = s->dtim_period;
2002 d->p2p_go_ctwindow = s->p2p_go_ctwindow;
2003 d->disassoc_low_ack = s->disassoc_low_ack;
2004 d->disable_scan_offload = s->disable_scan_offload;
2005 d->passive_scan = s->passive_scan;
2006
2007 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2008 !d->wps_nfc_pw_from_config) {
2009 wpabuf_free(d->wps_nfc_dh_privkey);
2010 wpabuf_free(d->wps_nfc_dh_pubkey);
2011 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2012 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2013 }
2014 d->p2p_cli_probe = s->p2p_cli_probe;
2015 d->go_interworking = s->go_interworking;
2016 d->go_access_network_type = s->go_access_network_type;
2017 d->go_internet = s->go_internet;
2018 d->go_venue_group = s->go_venue_group;
2019 d->go_venue_type = s->go_venue_type;
2020 }
2021
2022
2023 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2024 char *ifname, size_t len)
2025 {
2026 char *ifname_ptr = wpa_s->ifname;
2027
2028 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2029 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2030 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2031 }
2032
2033 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2034 if (os_strlen(ifname) >= IFNAMSIZ &&
2035 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2036 int res;
2037
2038 /* Try to avoid going over the IFNAMSIZ length limit */
2039 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2040 if (os_snprintf_error(len, res) && len)
2041 ifname[len - 1] = '\0';
2042 }
2043 }
2044
2045
2046 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2047 enum wpa_driver_if_type type)
2048 {
2049 char ifname[120], force_ifname[120];
2050
2051 if (wpa_s->pending_interface_name[0]) {
2052 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2053 "- skip creation of a new one");
2054 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2055 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2056 "unknown?! ifname='%s'",
2057 wpa_s->pending_interface_name);
2058 return -1;
2059 }
2060 return 0;
2061 }
2062
2063 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2064 force_ifname[0] = '\0';
2065
2066 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2067 ifname);
2068 wpa_s->p2p_group_idx++;
2069
2070 wpa_s->pending_interface_type = type;
2071 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2072 wpa_s->pending_interface_addr, NULL) < 0) {
2073 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2074 "interface");
2075 return -1;
2076 }
2077
2078 if (force_ifname[0]) {
2079 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2080 force_ifname);
2081 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2082 sizeof(wpa_s->pending_interface_name));
2083 } else
2084 os_strlcpy(wpa_s->pending_interface_name, ifname,
2085 sizeof(wpa_s->pending_interface_name));
2086 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2087 MACSTR, wpa_s->pending_interface_name,
2088 MAC2STR(wpa_s->pending_interface_addr));
2089
2090 return 0;
2091 }
2092
2093
2094 static void wpas_p2p_remove_pending_group_interface(
2095 struct wpa_supplicant *wpa_s)
2096 {
2097 if (!wpa_s->pending_interface_name[0] ||
2098 is_zero_ether_addr(wpa_s->pending_interface_addr))
2099 return; /* No pending virtual interface */
2100
2101 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2102 wpa_s->pending_interface_name);
2103 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2104 wpa_s->pending_interface_name);
2105 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2106 wpa_s->pending_interface_name[0] = '\0';
2107 wpa_s->global->pending_group_iface_for_p2ps = 0;
2108 }
2109
2110
2111 static struct wpa_supplicant *
2112 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2113 {
2114 struct wpa_interface iface;
2115 struct wpa_supplicant *group_wpa_s;
2116
2117 if (!wpa_s->pending_interface_name[0]) {
2118 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2119 if (!wpas_p2p_create_iface(wpa_s))
2120 return NULL;
2121 /*
2122 * Something has forced us to remove the pending interface; try
2123 * to create a new one and hope for the best that we will get
2124 * the same local address.
2125 */
2126 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2127 WPA_IF_P2P_CLIENT) < 0)
2128 return NULL;
2129 }
2130
2131 os_memset(&iface, 0, sizeof(iface));
2132 iface.ifname = wpa_s->pending_interface_name;
2133 iface.driver = wpa_s->driver->name;
2134 if (wpa_s->conf->ctrl_interface == NULL &&
2135 wpa_s->parent != wpa_s &&
2136 wpa_s->p2p_mgmt &&
2137 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2138 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2139 else
2140 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2141 iface.driver_param = wpa_s->conf->driver_param;
2142 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2143 if (group_wpa_s == NULL) {
2144 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2145 "wpa_supplicant interface");
2146 return NULL;
2147 }
2148 wpa_s->pending_interface_name[0] = '\0';
2149 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2150 P2P_GROUP_INTERFACE_CLIENT;
2151 wpa_s->global->p2p_group_formation = group_wpa_s;
2152 wpa_s->global->pending_group_iface_for_p2ps = 0;
2153
2154 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2155
2156 return group_wpa_s;
2157 }
2158
2159
2160 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2161 void *timeout_ctx)
2162 {
2163 struct wpa_supplicant *wpa_s = eloop_ctx;
2164 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2165 wpas_p2p_group_formation_failed(wpa_s, 0);
2166 }
2167
2168
2169 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2170 int already_deleted)
2171 {
2172 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2173 wpa_s->p2pdev, NULL);
2174 if (wpa_s->global->p2p)
2175 p2p_group_formation_failed(wpa_s->global->p2p);
2176 wpas_group_formation_completed(wpa_s, 0, already_deleted);
2177 }
2178
2179
2180 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2181 {
2182 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2183 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2184 wpa_s->p2pdev, NULL);
2185 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2186 wpa_s->p2pdev, NULL);
2187 wpa_s->global->p2p_fail_on_wps_complete = 0;
2188 }
2189
2190
2191 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2192 {
2193 if (wpa_s->global->p2p_group_formation != wpa_s)
2194 return;
2195 /* Speed up group formation timeout since this cannot succeed */
2196 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2197 wpa_s->p2pdev, NULL);
2198 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2199 wpa_s->p2pdev, NULL);
2200 }
2201
2202
2203 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2204 {
2205 struct wpa_supplicant *wpa_s = ctx;
2206 struct wpa_supplicant *group_wpa_s;
2207
2208 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2209 wpa_drv_cancel_remain_on_channel(wpa_s);
2210 wpa_s->off_channel_freq = 0;
2211 wpa_s->roc_waiting_drv_freq = 0;
2212 }
2213
2214 if (res->status) {
2215 wpa_msg_global(wpa_s, MSG_INFO,
2216 P2P_EVENT_GO_NEG_FAILURE "status=%d",
2217 res->status);
2218 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2219 wpas_p2p_remove_pending_group_interface(wpa_s);
2220 return;
2221 }
2222
2223 if (!res->role_go) {
2224 /* Inform driver of the operating channel of GO. */
2225 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2226 }
2227
2228 if (wpa_s->p2p_go_ht40)
2229 res->ht40 = 1;
2230 if (wpa_s->p2p_go_vht)
2231 res->vht = 1;
2232 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2233 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2234
2235 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2236 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2237 " wps_method=%s",
2238 res->role_go ? "GO" : "client", res->freq, res->ht40,
2239 MAC2STR(res->peer_device_addr),
2240 MAC2STR(res->peer_interface_addr),
2241 p2p_wps_method_text(res->wps_method));
2242 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2243
2244 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2245 struct wpa_ssid *ssid;
2246 ssid = wpa_config_get_network(wpa_s->conf,
2247 wpa_s->p2p_persistent_id);
2248 if (ssid && ssid->disabled == 2 &&
2249 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2250 size_t len = os_strlen(ssid->passphrase);
2251 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2252 "on requested persistent group");
2253 os_memcpy(res->passphrase, ssid->passphrase, len);
2254 res->passphrase[len] = '\0';
2255 }
2256 }
2257
2258 if (wpa_s->create_p2p_iface) {
2259 group_wpa_s =
2260 wpas_p2p_init_group_interface(wpa_s, res->role_go);
2261 if (group_wpa_s == NULL) {
2262 wpas_p2p_remove_pending_group_interface(wpa_s);
2263 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2264 wpa_s, NULL);
2265 wpas_p2p_group_formation_failed(wpa_s, 1);
2266 return;
2267 }
2268 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2269 wpa_s->pending_interface_name[0] = '\0';
2270 } else {
2271 group_wpa_s = wpa_s->parent;
2272 wpa_s->global->p2p_group_formation = group_wpa_s;
2273 if (group_wpa_s != wpa_s)
2274 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2275 }
2276
2277 group_wpa_s->p2p_in_provisioning = 1;
2278 group_wpa_s->p2pdev = wpa_s;
2279 if (group_wpa_s != wpa_s) {
2280 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2281 sizeof(group_wpa_s->p2p_pin));
2282 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2283 }
2284 if (res->role_go) {
2285 wpas_start_wps_go(group_wpa_s, res, 1);
2286 } else {
2287 os_get_reltime(&group_wpa_s->scan_min_time);
2288 wpas_start_wps_enrollee(group_wpa_s, res);
2289 }
2290
2291 wpa_s->p2p_long_listen = 0;
2292 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2293
2294 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2295 eloop_register_timeout(15 + res->peer_config_timeout / 100,
2296 (res->peer_config_timeout % 100) * 10000,
2297 wpas_p2p_group_formation_timeout, wpa_s, NULL);
2298 }
2299
2300
2301 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2302 u8 go_intent)
2303 {
2304 struct wpa_supplicant *wpa_s = ctx;
2305 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2306 " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2307 dev_passwd_id, go_intent);
2308
2309 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2310 }
2311
2312
2313 static void wpas_dev_found(void *ctx, const u8 *addr,
2314 const struct p2p_peer_info *info,
2315 int new_device)
2316 {
2317 #ifndef CONFIG_NO_STDOUT_DEBUG
2318 struct wpa_supplicant *wpa_s = ctx;
2319 char devtype[WPS_DEV_TYPE_BUFSIZE];
2320 char *wfd_dev_info_hex = NULL;
2321
2322 #ifdef CONFIG_WIFI_DISPLAY
2323 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2324 WFD_SUBELEM_DEVICE_INFO);
2325 #endif /* CONFIG_WIFI_DISPLAY */
2326
2327 if (info->p2ps_instance) {
2328 char str[256];
2329 const u8 *buf = wpabuf_head(info->p2ps_instance);
2330 size_t len = wpabuf_len(info->p2ps_instance);
2331
2332 while (len) {
2333 u32 id;
2334 u16 methods;
2335 u8 str_len;
2336
2337 if (len < 4 + 2 + 1)
2338 break;
2339 id = WPA_GET_LE32(buf);
2340 buf += sizeof(u32);
2341 methods = WPA_GET_BE16(buf);
2342 buf += sizeof(u16);
2343 str_len = *buf++;
2344 if (str_len > len - 4 - 2 - 1)
2345 break;
2346 os_memcpy(str, buf, str_len);
2347 str[str_len] = '\0';
2348 buf += str_len;
2349 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2350
2351 wpa_msg_global(wpa_s, MSG_INFO,
2352 P2P_EVENT_DEVICE_FOUND MACSTR
2353 " p2p_dev_addr=" MACSTR
2354 " pri_dev_type=%s name='%s'"
2355 " config_methods=0x%x"
2356 " dev_capab=0x%x"
2357 " group_capab=0x%x"
2358 " adv_id=%x asp_svc=%s%s",
2359 MAC2STR(addr),
2360 MAC2STR(info->p2p_device_addr),
2361 wps_dev_type_bin2str(
2362 info->pri_dev_type,
2363 devtype, sizeof(devtype)),
2364 info->device_name, methods,
2365 info->dev_capab, info->group_capab,
2366 id, str,
2367 info->vendor_elems ?
2368 " vendor_elems=1" : "");
2369 }
2370 goto done;
2371 }
2372
2373 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2374 " p2p_dev_addr=" MACSTR
2375 " pri_dev_type=%s name='%s' config_methods=0x%x "
2376 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2377 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2378 wps_dev_type_bin2str(info->pri_dev_type, devtype,
2379 sizeof(devtype)),
2380 info->device_name, info->config_methods,
2381 info->dev_capab, info->group_capab,
2382 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2383 wfd_dev_info_hex ? wfd_dev_info_hex : "",
2384 info->vendor_elems ? " vendor_elems=1" : "",
2385 new_device);
2386
2387 done:
2388 os_free(wfd_dev_info_hex);
2389 #endif /* CONFIG_NO_STDOUT_DEBUG */
2390
2391 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2392 }
2393
2394
2395 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2396 {
2397 struct wpa_supplicant *wpa_s = ctx;
2398
2399 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2400 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2401
2402 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2403 }
2404
2405
2406 static void wpas_find_stopped(void *ctx)
2407 {
2408 struct wpa_supplicant *wpa_s = ctx;
2409
2410 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2411 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2412
2413 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2414 wpas_notify_p2p_find_stopped(wpa_s);
2415 }
2416
2417
2418 struct wpas_p2p_listen_work {
2419 unsigned int freq;
2420 unsigned int duration;
2421 struct wpabuf *probe_resp_ie;
2422 };
2423
2424
2425 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2426 {
2427 if (lwork == NULL)
2428 return;
2429 wpabuf_free(lwork->probe_resp_ie);
2430 os_free(lwork);
2431 }
2432
2433
2434 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2435 {
2436 struct wpas_p2p_listen_work *lwork;
2437
2438 if (!wpa_s->p2p_listen_work)
2439 return;
2440
2441 lwork = wpa_s->p2p_listen_work->ctx;
2442 wpas_p2p_listen_work_free(lwork);
2443 radio_work_done(wpa_s->p2p_listen_work);
2444 wpa_s->p2p_listen_work = NULL;
2445 }
2446
2447
2448 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2449 {
2450 struct wpa_supplicant *wpa_s = work->wpa_s;
2451 struct wpas_p2p_listen_work *lwork = work->ctx;
2452 unsigned int duration;
2453
2454 if (deinit) {
2455 if (work->started) {
2456 wpa_s->p2p_listen_work = NULL;
2457 wpas_stop_listen(wpa_s);
2458 }
2459 wpas_p2p_listen_work_free(lwork);
2460 return;
2461 }
2462
2463 wpa_s->p2p_listen_work = work;
2464
2465 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2466
2467 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2468 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2469 "report received Probe Request frames");
2470 wpas_p2p_listen_work_done(wpa_s);
2471 return;
2472 }
2473
2474 wpa_s->pending_listen_freq = lwork->freq;
2475 wpa_s->pending_listen_duration = lwork->duration;
2476
2477 duration = lwork->duration;
2478 #ifdef CONFIG_TESTING_OPTIONS
2479 if (wpa_s->extra_roc_dur) {
2480 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2481 duration, duration + wpa_s->extra_roc_dur);
2482 duration += wpa_s->extra_roc_dur;
2483 }
2484 #endif /* CONFIG_TESTING_OPTIONS */
2485
2486 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2487 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2488 "to remain on channel (%u MHz) for Listen "
2489 "state", lwork->freq);
2490 wpas_p2p_listen_work_done(wpa_s);
2491 wpa_s->pending_listen_freq = 0;
2492 return;
2493 }
2494 wpa_s->off_channel_freq = 0;
2495 wpa_s->roc_waiting_drv_freq = lwork->freq;
2496 }
2497
2498
2499 static int wpas_start_listen(void *ctx, unsigned int freq,
2500 unsigned int duration,
2501 const struct wpabuf *probe_resp_ie)
2502 {
2503 struct wpa_supplicant *wpa_s = ctx;
2504 struct wpas_p2p_listen_work *lwork;
2505
2506 if (wpa_s->p2p_listen_work) {
2507 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2508 return -1;
2509 }
2510
2511 lwork = os_zalloc(sizeof(*lwork));
2512 if (lwork == NULL)
2513 return -1;
2514 lwork->freq = freq;
2515 lwork->duration = duration;
2516 if (probe_resp_ie) {
2517 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2518 if (lwork->probe_resp_ie == NULL) {
2519 wpas_p2p_listen_work_free(lwork);
2520 return -1;
2521 }
2522 }
2523
2524 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2525 lwork) < 0) {
2526 wpas_p2p_listen_work_free(lwork);
2527 return -1;
2528 }
2529
2530 return 0;
2531 }
2532
2533
2534 static void wpas_stop_listen(void *ctx)
2535 {
2536 struct wpa_supplicant *wpa_s = ctx;
2537 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2538 wpa_drv_cancel_remain_on_channel(wpa_s);
2539 wpa_s->off_channel_freq = 0;
2540 wpa_s->roc_waiting_drv_freq = 0;
2541 }
2542 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2543
2544 /*
2545 * Don't cancel Probe Request RX reporting for a connected P2P Client
2546 * handling Probe Request frames.
2547 */
2548 if (!wpa_s->p2p_cli_probe)
2549 wpa_drv_probe_req_report(wpa_s, 0);
2550
2551 wpas_p2p_listen_work_done(wpa_s);
2552 }
2553
2554
2555 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2556 unsigned int freq)
2557 {
2558 struct wpa_supplicant *wpa_s = ctx;
2559 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2560 freq);
2561 }
2562
2563
2564 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2565 const u8 *peer, const char *params,
2566 unsigned int generated_pin)
2567 {
2568 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2569 " %08d%s", MAC2STR(peer), generated_pin, params);
2570 }
2571
2572
2573 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2574 const u8 *peer, const char *params)
2575 {
2576 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2577 "%s", MAC2STR(peer), params);
2578 }
2579
2580
2581 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2582 const u8 *dev_addr, const u8 *pri_dev_type,
2583 const char *dev_name, u16 supp_config_methods,
2584 u8 dev_capab, u8 group_capab, const u8 *group_id,
2585 size_t group_id_len)
2586 {
2587 struct wpa_supplicant *wpa_s = ctx;
2588 char devtype[WPS_DEV_TYPE_BUFSIZE];
2589 char params[300];
2590 u8 empty_dev_type[8];
2591 unsigned int generated_pin = 0;
2592 struct wpa_supplicant *group = NULL;
2593 int res;
2594
2595 if (group_id) {
2596 for (group = wpa_s->global->ifaces; group; group = group->next)
2597 {
2598 struct wpa_ssid *s = group->current_ssid;
2599 if (s != NULL &&
2600 s->mode == WPAS_MODE_P2P_GO &&
2601 group_id_len - ETH_ALEN == s->ssid_len &&
2602 os_memcmp(group_id + ETH_ALEN, s->ssid,
2603 s->ssid_len) == 0)
2604 break;
2605 }
2606 }
2607
2608 if (pri_dev_type == NULL) {
2609 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2610 pri_dev_type = empty_dev_type;
2611 }
2612 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2613 " pri_dev_type=%s name='%s' config_methods=0x%x "
2614 "dev_capab=0x%x group_capab=0x%x%s%s",
2615 MAC2STR(dev_addr),
2616 wps_dev_type_bin2str(pri_dev_type, devtype,
2617 sizeof(devtype)),
2618 dev_name, supp_config_methods, dev_capab, group_capab,
2619 group ? " group=" : "",
2620 group ? group->ifname : "");
2621 if (os_snprintf_error(sizeof(params), res))
2622 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2623 params[sizeof(params) - 1] = '\0';
2624
2625 if (config_methods & WPS_CONFIG_DISPLAY) {
2626 if (wps_generate_pin(&generated_pin) < 0) {
2627 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2628 wpas_notify_p2p_provision_discovery(
2629 wpa_s, peer, 0 /* response */,
2630 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2631 return;
2632 }
2633 wpas_prov_disc_local_display(wpa_s, peer, params,
2634 generated_pin);
2635 } else if (config_methods & WPS_CONFIG_KEYPAD)
2636 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2637 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2638 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2639 MACSTR "%s", MAC2STR(peer), params);
2640
2641 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2642 P2P_PROV_DISC_SUCCESS,
2643 config_methods, generated_pin);
2644 }
2645
2646
2647 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2648 {
2649 struct wpa_supplicant *wpa_s = ctx;
2650 unsigned int generated_pin = 0;
2651 char params[20];
2652
2653 if (wpa_s->pending_pd_before_join &&
2654 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2655 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2656 wpa_s->pending_pd_before_join = 0;
2657 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2658 "join-existing-group operation");
2659 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2660 return;
2661 }
2662
2663 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2664 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2665 int res;
2666
2667 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2668 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2669 if (os_snprintf_error(sizeof(params), res))
2670 params[sizeof(params) - 1] = '\0';
2671 } else
2672 params[0] = '\0';
2673
2674 if (config_methods & WPS_CONFIG_DISPLAY)
2675 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2676 else if (config_methods & WPS_CONFIG_KEYPAD) {
2677 if (wps_generate_pin(&generated_pin) < 0) {
2678 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2679 wpas_notify_p2p_provision_discovery(
2680 wpa_s, peer, 0 /* response */,
2681 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2682 return;
2683 }
2684 wpas_prov_disc_local_display(wpa_s, peer, params,
2685 generated_pin);
2686 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2687 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2688 MACSTR "%s", MAC2STR(peer), params);
2689
2690 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2691 P2P_PROV_DISC_SUCCESS,
2692 config_methods, generated_pin);
2693 }
2694
2695
2696 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2697 enum p2p_prov_disc_status status,
2698 u32 adv_id, const u8 *adv_mac,
2699 const char *deferred_session_resp)
2700 {
2701 struct wpa_supplicant *wpa_s = ctx;
2702
2703 if (wpa_s->p2p_fallback_to_go_neg) {
2704 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2705 "failed - fall back to GO Negotiation");
2706 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2707 P2P_EVENT_FALLBACK_TO_GO_NEG
2708 "reason=PD-failed");
2709 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2710 return;
2711 }
2712
2713 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2714 wpa_s->pending_pd_before_join = 0;
2715 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2716 "join-existing-group operation (no ACK for PD "
2717 "Req attempts)");
2718 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2719 return;
2720 }
2721
2722 if (adv_id && adv_mac && deferred_session_resp) {
2723 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2724 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2725 " deferred_session_resp='%s'",
2726 MAC2STR(peer), status, adv_id,
2727 deferred_session_resp);
2728 } else if (adv_id && adv_mac) {
2729 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2730 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2731 MAC2STR(peer), status, adv_id);
2732 } else {
2733 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2734 " p2p_dev_addr=" MACSTR " status=%d",
2735 MAC2STR(peer), status);
2736 }
2737
2738 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2739 status, 0, 0);
2740 }
2741
2742
2743 static int freq_included(struct wpa_supplicant *wpa_s,
2744 const struct p2p_channels *channels,
2745 unsigned int freq)
2746 {
2747 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2748 wpas_p2p_go_is_peer_freq(wpa_s, freq))
2749 return 1;
2750 return 0;
2751 }
2752
2753
2754 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2755 {
2756 unsigned int num = P2P_MAX_CHANNELS;
2757 int *common_freqs;
2758 int ret;
2759
2760 p2p_go_dump_common_freqs(wpa_s);
2761 common_freqs = os_calloc(num, sizeof(int));
2762 if (!common_freqs)
2763 return;
2764
2765 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2766 if (ret < 0) {
2767 wpa_dbg(wpa_s, MSG_DEBUG,
2768 "P2P: Failed to get group common freqs");
2769 os_free(common_freqs);
2770 return;
2771 }
2772
2773 os_free(wpa_s->p2p_group_common_freqs);
2774 wpa_s->p2p_group_common_freqs = common_freqs;
2775 wpa_s->p2p_group_common_freqs_num = num;
2776 p2p_go_dump_common_freqs(wpa_s);
2777 }
2778
2779
2780 /*
2781 * Check if the given frequency is one of the possible operating frequencies
2782 * set after the completion of the GO Negotiation.
2783 */
2784 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2785 {
2786 unsigned int i;
2787
2788 p2p_go_dump_common_freqs(wpa_s);
2789
2790 /* assume no restrictions */
2791 if (!wpa_s->p2p_group_common_freqs_num)
2792 return 1;
2793
2794 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2795 if (wpa_s->p2p_group_common_freqs[i] == freq)
2796 return 1;
2797 }
2798 return 0;
2799 }
2800
2801
2802 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2803 struct sta_info *sta, void *ctx)
2804 {
2805 int *ecsa_support = ctx;
2806
2807 *ecsa_support &= sta->ecsa_supported;
2808
2809 return 0;
2810 }
2811
2812
2813 /* Check if all the peers support eCSA */
2814 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2815 {
2816 int ecsa_support = 1;
2817
2818 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2819 &ecsa_support);
2820
2821 return ecsa_support;
2822 }
2823
2824
2825 /**
2826 * Pick the best frequency to use from all the currently used frequencies.
2827 */
2828 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2829 struct wpa_used_freq_data *freqs,
2830 unsigned int num)
2831 {
2832 unsigned int i, c;
2833
2834 /* find a candidate freq that is supported by P2P */
2835 for (c = 0; c < num; c++)
2836 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2837 break;
2838
2839 if (c == num)
2840 return 0;
2841
2842 /* once we have a candidate, try to find a 'better' one */
2843 for (i = c + 1; i < num; i++) {
2844 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2845 continue;
2846
2847 /*
2848 * 1. Infrastructure station interfaces have higher preference.
2849 * 2. P2P Clients have higher preference.
2850 * 3. All others.
2851 */
2852 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2853 c = i;
2854 break;
2855 }
2856
2857 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2858 c = i;
2859 }
2860 return freqs[c].freq;
2861 }
2862
2863
2864 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2865 const u8 *go_dev_addr, const u8 *ssid,
2866 size_t ssid_len, int *go, u8 *group_bssid,
2867 int *force_freq, int persistent_group,
2868 const struct p2p_channels *channels,
2869 int dev_pw_id)
2870 {
2871 struct wpa_supplicant *wpa_s = ctx;
2872 struct wpa_ssid *s;
2873 struct wpa_used_freq_data *freqs;
2874 struct wpa_supplicant *grp;
2875 int best_freq;
2876
2877 if (!persistent_group) {
2878 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2879 " to join an active group (SSID: %s)",
2880 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2881 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2882 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2883 == 0 ||
2884 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2885 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2886 "authorized invitation");
2887 goto accept_inv;
2888 }
2889
2890 #ifdef CONFIG_WPS_NFC
2891 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2892 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2893 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2894 wpa_s->p2p_wps_method = WPS_NFC;
2895 wpa_s->pending_join_wps_method = WPS_NFC;
2896 os_memcpy(wpa_s->pending_join_dev_addr,
2897 go_dev_addr, ETH_ALEN);
2898 os_memcpy(wpa_s->pending_join_iface_addr,
2899 bssid, ETH_ALEN);
2900 goto accept_inv;
2901 }
2902 #endif /* CONFIG_WPS_NFC */
2903
2904 /*
2905 * Do not accept the invitation automatically; notify user and
2906 * request approval.
2907 */
2908 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2909 }
2910
2911 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2912 if (grp) {
2913 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2914 "running persistent group");
2915 if (*go)
2916 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2917 goto accept_inv;
2918 }
2919
2920 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2921 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2922 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2923 "invitation to re-invoke a persistent group");
2924 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2925 } else if (!wpa_s->conf->persistent_reconnect)
2926 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2927
2928 for (s = wpa_s->conf->ssid; s; s = s->next) {
2929 if (s->disabled == 2 &&
2930 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2931 s->ssid_len == ssid_len &&
2932 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2933 break;
2934 }
2935
2936 if (!s) {
2937 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2938 " requested reinvocation of an unknown group",
2939 MAC2STR(sa));
2940 return P2P_SC_FAIL_UNKNOWN_GROUP;
2941 }
2942
2943 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2944 *go = 1;
2945 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2946 wpa_printf(MSG_DEBUG, "P2P: The only available "
2947 "interface is already in use - reject "
2948 "invitation");
2949 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2950 }
2951 if (wpa_s->p2p_mgmt)
2952 os_memcpy(group_bssid, wpa_s->parent->own_addr,
2953 ETH_ALEN);
2954 else
2955 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2956 } else if (s->mode == WPAS_MODE_P2P_GO) {
2957 *go = 1;
2958 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2959 {
2960 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2961 "interface address for the group");
2962 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2963 }
2964 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2965 ETH_ALEN);
2966 }
2967
2968 accept_inv:
2969 wpas_p2p_set_own_freq_preference(wpa_s, 0);
2970
2971 best_freq = 0;
2972 freqs = os_calloc(wpa_s->num_multichan_concurrent,
2973 sizeof(struct wpa_used_freq_data));
2974 if (freqs) {
2975 int num_channels = wpa_s->num_multichan_concurrent;
2976 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2977 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2978 os_free(freqs);
2979 }
2980
2981 /* Get one of the frequencies currently in use */
2982 if (best_freq > 0) {
2983 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2984 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2985
2986 if (wpa_s->num_multichan_concurrent < 2 ||
2987 wpas_p2p_num_unused_channels(wpa_s) < 1) {
2988 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2989 *force_freq = best_freq;
2990 }
2991 }
2992
2993 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2994 wpas_p2p_num_unused_channels(wpa_s) > 0) {
2995 if (*go == 0) {
2996 /* We are the client */
2997 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2998 "running a GO but we are capable of MCC, "
2999 "figure out the best channel to use");
3000 *force_freq = 0;
3001 } else if (!freq_included(wpa_s, channels, *force_freq)) {
3002 /* We are the GO, and *force_freq is not in the
3003 * intersection */
3004 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3005 "in intersection but we are capable of MCC, "
3006 "figure out the best channel to use",
3007 *force_freq);
3008 *force_freq = 0;
3009 }
3010 }
3011
3012 return P2P_SC_SUCCESS;
3013 }
3014
3015
3016 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3017 const u8 *ssid, size_t ssid_len,
3018 const u8 *go_dev_addr, u8 status,
3019 int op_freq)
3020 {
3021 struct wpa_supplicant *wpa_s = ctx;
3022 struct wpa_ssid *s;
3023
3024 for (s = wpa_s->conf->ssid; s; s = s->next) {
3025 if (s->disabled == 2 &&
3026 s->ssid_len == ssid_len &&
3027 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3028 break;
3029 }
3030
3031 if (status == P2P_SC_SUCCESS) {
3032 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3033 " was accepted; op_freq=%d MHz, SSID=%s",
3034 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3035 if (s) {
3036 int go = s->mode == WPAS_MODE_P2P_GO;
3037 if (go) {
3038 wpa_msg_global(wpa_s, MSG_INFO,
3039 P2P_EVENT_INVITATION_ACCEPTED
3040 "sa=" MACSTR
3041 " persistent=%d freq=%d",
3042 MAC2STR(sa), s->id, op_freq);
3043 } else {
3044 wpa_msg_global(wpa_s, MSG_INFO,
3045 P2P_EVENT_INVITATION_ACCEPTED
3046 "sa=" MACSTR
3047 " persistent=%d",
3048 MAC2STR(sa), s->id);
3049 }
3050 wpas_p2p_group_add_persistent(
3051 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3052 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3053 1);
3054 } else if (bssid) {
3055 wpa_s->user_initiated_pd = 0;
3056 wpa_msg_global(wpa_s, MSG_INFO,
3057 P2P_EVENT_INVITATION_ACCEPTED
3058 "sa=" MACSTR " go_dev_addr=" MACSTR
3059 " bssid=" MACSTR " unknown-network",
3060 MAC2STR(sa), MAC2STR(go_dev_addr),
3061 MAC2STR(bssid));
3062 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3063 wpa_s->p2p_wps_method, 0, op_freq,
3064 ssid, ssid_len);
3065 }
3066 return;
3067 }
3068
3069 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3070 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3071 " was rejected (status %u)", MAC2STR(sa), status);
3072 return;
3073 }
3074
3075 if (!s) {
3076 if (bssid) {
3077 wpa_msg_global(wpa_s, MSG_INFO,
3078 P2P_EVENT_INVITATION_RECEIVED
3079 "sa=" MACSTR " go_dev_addr=" MACSTR
3080 " bssid=" MACSTR " unknown-network",
3081 MAC2STR(sa), MAC2STR(go_dev_addr),
3082 MAC2STR(bssid));
3083 } else {
3084 wpa_msg_global(wpa_s, MSG_INFO,
3085 P2P_EVENT_INVITATION_RECEIVED
3086 "sa=" MACSTR " go_dev_addr=" MACSTR
3087 " unknown-network",
3088 MAC2STR(sa), MAC2STR(go_dev_addr));
3089 }
3090 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3091 bssid, 0, op_freq);
3092 return;
3093 }
3094
3095 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3096 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3097 "sa=" MACSTR " persistent=%d freq=%d",
3098 MAC2STR(sa), s->id, op_freq);
3099 } else {
3100 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3101 "sa=" MACSTR " persistent=%d",
3102 MAC2STR(sa), s->id);
3103 }
3104 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3105 s->id, op_freq);
3106 }
3107
3108
3109 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3110 struct wpa_ssid *ssid,
3111 const u8 *peer, int inv)
3112 {
3113 size_t i;
3114 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3115
3116 if (ssid == NULL)
3117 return;
3118
3119 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3120 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3121 ETH_ALEN) == 0)
3122 break;
3123 }
3124 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3125 if (ssid->mode != WPAS_MODE_P2P_GO &&
3126 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3127 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3128 "due to invitation result", ssid->id);
3129 wpas_notify_network_removed(wpa_s, ssid);
3130 wpa_config_remove_network(wpa_s->conf, ssid->id);
3131 return;
3132 }
3133 return; /* Peer not found in client list */
3134 }
3135
3136 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3137 "group %d client list%s",
3138 MAC2STR(peer), ssid->id,
3139 inv ? " due to invitation result" : "");
3140 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3141 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3142 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3143 ssid->num_p2p_clients--;
3144 if (p2p_wpa_s->conf->update_config &&
3145 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3146 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3147 }
3148
3149
3150 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3151 const u8 *peer)
3152 {
3153 struct wpa_ssid *ssid;
3154
3155 wpa_s = wpa_s->global->p2p_invite_group;
3156 if (wpa_s == NULL)
3157 return; /* No known invitation group */
3158 ssid = wpa_s->current_ssid;
3159 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3160 !ssid->p2p_persistent_group)
3161 return; /* Not operating as a GO in persistent group */
3162 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3163 ssid->ssid, ssid->ssid_len);
3164 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3165 }
3166
3167
3168 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3169 const struct p2p_channels *channels,
3170 const u8 *peer, int neg_freq,
3171 int peer_oper_freq)
3172 {
3173 struct wpa_supplicant *wpa_s = ctx;
3174 struct wpa_ssid *ssid;
3175 int freq;
3176
3177 if (bssid) {
3178 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3179 "status=%d " MACSTR,
3180 status, MAC2STR(bssid));
3181 } else {
3182 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3183 "status=%d ", status);
3184 }
3185 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3186
3187 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3188 status, MAC2STR(peer));
3189 if (wpa_s->pending_invite_ssid_id == -1) {
3190 struct wpa_supplicant *group_if =
3191 wpa_s->global->p2p_invite_group;
3192
3193 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3194 wpas_remove_persistent_client(wpa_s, peer);
3195
3196 /*
3197 * Invitation to an active group. If this is successful and we
3198 * are the GO, set the client wait to postpone some concurrent
3199 * operations and to allow provisioning and connection to happen
3200 * more quickly.
3201 */
3202 if (status == P2P_SC_SUCCESS &&
3203 group_if && group_if->current_ssid &&
3204 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3205 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3206 #ifdef CONFIG_TESTING_OPTIONS
3207 if (group_if->p2p_go_csa_on_inv) {
3208 wpa_printf(MSG_DEBUG,
3209 "Testing: force P2P GO CSA after invitation");
3210 eloop_cancel_timeout(
3211 wpas_p2p_reconsider_moving_go,
3212 wpa_s, NULL);
3213 eloop_register_timeout(
3214 0, 50000,
3215 wpas_p2p_reconsider_moving_go,
3216 wpa_s, NULL);
3217 }
3218 #endif /* CONFIG_TESTING_OPTIONS */
3219 }
3220 return;
3221 }
3222
3223 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3224 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3225 "invitation exchange to indicate readiness for "
3226 "re-invocation");
3227 }
3228
3229 if (status != P2P_SC_SUCCESS) {
3230 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3231 ssid = wpa_config_get_network(
3232 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3233 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3234 }
3235 wpas_p2p_remove_pending_group_interface(wpa_s);
3236 return;
3237 }
3238
3239 ssid = wpa_config_get_network(wpa_s->conf,
3240 wpa_s->pending_invite_ssid_id);
3241 if (ssid == NULL) {
3242 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3243 "data matching with invitation");
3244 return;
3245 }
3246
3247 /*
3248 * The peer could have missed our ctrl::ack frame for Invitation
3249 * Response and continue retransmitting the frame. To reduce the
3250 * likelihood of the peer not getting successful TX status for the
3251 * Invitation Response frame, wait a short time here before starting
3252 * the persistent group so that we will remain on the current channel to
3253 * acknowledge any possible retransmission from the peer.
3254 */
3255 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3256 "starting persistent group");
3257 os_sleep(0, 50000);
3258
3259 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3260 freq_included(wpa_s, channels, neg_freq))
3261 freq = neg_freq;
3262 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3263 freq_included(wpa_s, channels, peer_oper_freq))
3264 freq = peer_oper_freq;
3265 else
3266 freq = 0;
3267
3268 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3269 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3270 wpas_p2p_group_add_persistent(wpa_s, ssid,
3271 ssid->mode == WPAS_MODE_P2P_GO,
3272 wpa_s->p2p_persistent_go_freq,
3273 freq,
3274 wpa_s->p2p_go_vht_center_freq2,
3275 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3276 wpa_s->p2p_go_max_oper_chwidth,
3277 channels,
3278 ssid->mode == WPAS_MODE_P2P_GO ?
3279 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3280 0, 1);
3281 }
3282
3283
3284 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3285 unsigned int freq)
3286 {
3287 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3288 return 1;
3289 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3290 }
3291
3292
3293 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3294 {
3295 reg->channel[reg->channels] = chan;
3296 reg->channels++;
3297 }
3298
3299
3300 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3301 struct p2p_channels *chan,
3302 struct p2p_channels *cli_chan)
3303 {
3304 int i, cla = 0;
3305
3306 wpa_s->global->p2p_24ghz_social_channels = 1;
3307
3308 os_memset(cli_chan, 0, sizeof(*cli_chan));
3309
3310 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3311 "band");
3312
3313 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3314 chan->reg_class[cla].reg_class = 81;
3315 chan->reg_class[cla].channels = 0;
3316 for (i = 0; i < 11; i++) {
3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3318 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3319 }
3320 if (chan->reg_class[cla].channels)
3321 cla++;
3322
3323 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3324 "band");
3325
3326 /* Operating class 115 - 5 GHz, channels 36-48 */
3327 chan->reg_class[cla].reg_class = 115;
3328 chan->reg_class[cla].channels = 0;
3329 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3330 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3331 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3332 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3333 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3334 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3335 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3336 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3337 if (chan->reg_class[cla].channels)
3338 cla++;
3339
3340 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3341 "band");
3342
3343 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3344 chan->reg_class[cla].reg_class = 124;
3345 chan->reg_class[cla].channels = 0;
3346 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3347 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3348 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3349 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3350 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3351 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3352 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3353 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3354 if (chan->reg_class[cla].channels)
3355 cla++;
3356
3357 chan->reg_classes = cla;
3358 return 0;
3359 }
3360
3361
3362 static int has_channel(struct wpa_global *global,
3363 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3364 {
3365 int i;
3366 unsigned int freq;
3367
3368 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3369 chan * 5;
3370 if (wpas_p2p_disallowed_freq(global, freq))
3371 return NOT_ALLOWED;
3372
3373 for (i = 0; i < mode->num_channels; i++) {
3374 if (mode->channels[i].chan == chan) {
3375 if (flags)
3376 *flags = mode->channels[i].flag;
3377 if (mode->channels[i].flag &
3378 (HOSTAPD_CHAN_DISABLED |
3379 HOSTAPD_CHAN_RADAR))
3380 return NOT_ALLOWED;
3381 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3382 return NO_IR;
3383 return ALLOWED;
3384 }
3385 }
3386
3387 return NOT_ALLOWED;
3388 }
3389
3390
3391 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3392 struct hostapd_hw_modes *mode,
3393 u8 channel)
3394 {
3395 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3396 size_t i;
3397
3398 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3399 return 0;
3400
3401 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3402 /*
3403 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3404 * so the center channel is 6 channels away from the start/end.
3405 */
3406 if (channel >= center_channels[i] - 6 &&
3407 channel <= center_channels[i] + 6)
3408 return center_channels[i];
3409
3410 return 0;
3411 }
3412
3413
3414 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3415 struct hostapd_hw_modes *mode,
3416 u8 channel, u8 bw)
3417 {
3418 u8 center_chan;
3419 int i, flags;
3420 enum chan_allowed res, ret = ALLOWED;
3421
3422 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3423 if (!center_chan)
3424 return NOT_ALLOWED;
3425 if (center_chan >= 58 && center_chan <= 138)
3426 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3427
3428 /* check all the channels are available */
3429 for (i = 0; i < 4; i++) {
3430 int adj_chan = center_chan - 6 + i * 4;
3431
3432 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3433 if (res == NOT_ALLOWED)
3434 return NOT_ALLOWED;
3435 if (res == NO_IR)
3436 ret = NO_IR;
3437
3438 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3439 return NOT_ALLOWED;
3440 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3441 return NOT_ALLOWED;
3442 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3443 return NOT_ALLOWED;
3444 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3445 return NOT_ALLOWED;
3446 }
3447
3448 return ret;
3449 }
3450
3451
3452 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3453 struct hostapd_hw_modes *mode,
3454 u8 channel)
3455 {
3456 u8 center_channels[] = { 50, 114 };
3457 unsigned int i;
3458
3459 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3460 return 0;
3461
3462 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3463 /*
3464 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3465 * so the center channel is 14 channels away from the start/end.
3466 */
3467 if (channel >= center_channels[i] - 14 &&
3468 channel <= center_channels[i] + 14)
3469 return center_channels[i];
3470
3471 return 0;
3472 }
3473
3474
3475 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3476 struct hostapd_hw_modes *mode,
3477 u8 channel, u8 bw)
3478 {
3479 u8 center_chan;
3480 int i, flags;
3481 enum chan_allowed res, ret = ALLOWED;
3482
3483 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3484 if (!center_chan)
3485 return NOT_ALLOWED;
3486 /* VHT 160 MHz uses DFS channels in most countries. */
3487
3488 /* Check all the channels are available */
3489 for (i = 0; i < 8; i++) {
3490 int adj_chan = center_chan - 14 + i * 4;
3491
3492 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3493 if (res == NOT_ALLOWED)
3494 return NOT_ALLOWED;
3495
3496 if (res == NO_IR)
3497 ret = NO_IR;
3498
3499 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3500 return NOT_ALLOWED;
3501 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3502 return NOT_ALLOWED;
3503 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3504 return NOT_ALLOWED;
3505 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3506 return NOT_ALLOWED;
3507 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3508 return NOT_ALLOWED;
3509 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3510 return NOT_ALLOWED;
3511 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3512 return NOT_ALLOWED;
3513 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3514 return NOT_ALLOWED;
3515 }
3516
3517 return ret;
3518 }
3519
3520
3521 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3522 struct hostapd_hw_modes *mode,
3523 u8 channel, u8 bw)
3524 {
3525 int flag = 0;
3526 enum chan_allowed res, res2;
3527
3528 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3529 if (bw == BW40MINUS) {
3530 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3531 return NOT_ALLOWED;
3532 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3533 } else if (bw == BW40PLUS) {
3534 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3535 return NOT_ALLOWED;
3536 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3537 } else if (bw == BW80) {
3538 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3539 } else if (bw == BW160) {
3540 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3541 }
3542
3543 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3544 return NOT_ALLOWED;
3545 if (res == NO_IR || res2 == NO_IR)
3546 return NO_IR;
3547 return res;
3548 }
3549
3550
3551 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3552 struct p2p_channels *chan,
3553 struct p2p_channels *cli_chan)
3554 {
3555 struct hostapd_hw_modes *mode;
3556 int cla, op, cli_cla;
3557
3558 if (wpa_s->hw.modes == NULL) {
3559 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3560 "of all supported channels; assume dualband "
3561 "support");
3562 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3563 }
3564
3565 cla = cli_cla = 0;
3566
3567 for (op = 0; global_op_class[op].op_class; op++) {
3568 const struct oper_class_map *o = &global_op_class[op];
3569 u8 ch;
3570 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3571
3572 if (o->p2p == NO_P2P_SUPP)
3573 continue;
3574
3575 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3576 if (mode == NULL)
3577 continue;
3578 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3579 wpa_s->global->p2p_24ghz_social_channels = 1;
3580 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3581 enum chan_allowed res;
3582 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3583 if (res == ALLOWED) {
3584 if (reg == NULL) {
3585 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3586 o->op_class);
3587 reg = &chan->reg_class[cla];
3588 cla++;
3589 reg->reg_class = o->op_class;
3590 }
3591 reg->channel[reg->channels] = ch;
3592 reg->channels++;
3593 } else if (res == NO_IR &&
3594 wpa_s->conf->p2p_add_cli_chan) {
3595 if (cli_reg == NULL) {
3596 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3597 o->op_class);
3598 cli_reg = &cli_chan->reg_class[cli_cla];
3599 cli_cla++;
3600 cli_reg->reg_class = o->op_class;
3601 }
3602 cli_reg->channel[cli_reg->channels] = ch;
3603 cli_reg->channels++;
3604 }
3605 }
3606 if (reg) {
3607 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3608 reg->channel, reg->channels);
3609 }
3610 if (cli_reg) {
3611 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3612 cli_reg->channel, cli_reg->channels);
3613 }
3614 }
3615
3616 chan->reg_classes = cla;
3617 cli_chan->reg_classes = cli_cla;
3618
3619 return 0;
3620 }
3621
3622
3623 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3624 struct hostapd_hw_modes *mode, u8 channel)
3625 {
3626 int op;
3627 enum chan_allowed ret;
3628
3629 for (op = 0; global_op_class[op].op_class; op++) {
3630 const struct oper_class_map *o = &global_op_class[op];
3631 u8 ch;
3632
3633 if (o->p2p == NO_P2P_SUPP)
3634 continue;
3635
3636 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3637 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3638 (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3639 ch != channel)
3640 continue;
3641 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3642 if (ret == ALLOWED)
3643 return (o->bw == BW40MINUS) ? -1 : 1;
3644 }
3645 }
3646 return 0;
3647 }
3648
3649
3650 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3651 struct hostapd_hw_modes *mode, u8 channel)
3652 {
3653 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3654 return 0;
3655
3656 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3657 }
3658
3659
3660 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3661 struct hostapd_hw_modes *mode, u8 channel)
3662 {
3663 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3664 return 0;
3665 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3666 }
3667
3668
3669 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3670 size_t buf_len)
3671 {
3672 struct wpa_supplicant *wpa_s = ctx;
3673
3674 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3675 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3676 break;
3677 }
3678 if (wpa_s == NULL)
3679 return -1;
3680
3681 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3682 }
3683
3684
3685 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3686 const u8 *ssid, size_t ssid_len)
3687 {
3688 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3689 struct wpa_ssid *s = wpa_s->current_ssid;
3690 if (s == NULL)
3691 continue;
3692 if (s->mode != WPAS_MODE_P2P_GO &&
3693 s->mode != WPAS_MODE_AP &&
3694 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3695 continue;
3696 if (s->ssid_len != ssid_len ||
3697 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3698 continue;
3699 return wpa_s;
3700 }
3701
3702 return NULL;
3703
3704 }
3705
3706
3707 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3708 const u8 *peer_dev_addr)
3709 {
3710 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3711 struct wpa_ssid *ssid = wpa_s->current_ssid;
3712 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3713 continue;
3714 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3715 return wpa_s;
3716 }
3717
3718 return NULL;
3719 }
3720
3721
3722 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3723 {
3724 struct wpa_supplicant *wpa_s = ctx;
3725
3726 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3727 }
3728
3729
3730 static int wpas_is_concurrent_session_active(void *ctx)
3731 {
3732 struct wpa_supplicant *wpa_s = ctx;
3733 struct wpa_supplicant *ifs;
3734
3735 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3736 if (ifs == wpa_s)
3737 continue;
3738 if (ifs->wpa_state > WPA_ASSOCIATED)
3739 return 1;
3740 }
3741 return 0;
3742 }
3743
3744
3745 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3746 {
3747 struct wpa_supplicant *wpa_s = ctx;
3748 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3749 }
3750
3751
3752 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3753 const char *conf_p2p_dev)
3754 {
3755 struct wpa_interface iface;
3756 struct wpa_supplicant *p2pdev_wpa_s;
3757 char ifname[100];
3758 char force_name[100];
3759 int ret;
3760
3761 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3762 wpa_s->ifname);
3763 if (os_snprintf_error(sizeof(ifname), ret))
3764 return -1;
3765 force_name[0] = '\0';
3766 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3767 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3768 force_name, wpa_s->pending_interface_addr, NULL);
3769 if (ret < 0) {
3770 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3771 return ret;
3772 }
3773 os_strlcpy(wpa_s->pending_interface_name, ifname,
3774 sizeof(wpa_s->pending_interface_name));
3775
3776 os_memset(&iface, 0, sizeof(iface));
3777 iface.p2p_mgmt = 1;
3778 iface.ifname = wpa_s->pending_interface_name;
3779 iface.driver = wpa_s->driver->name;
3780 iface.driver_param = wpa_s->conf->driver_param;
3781
3782 /*
3783 * If a P2P Device configuration file was given, use it as the interface
3784 * configuration file (instead of using parent's configuration file.
3785 */
3786 if (conf_p2p_dev) {
3787 iface.confname = conf_p2p_dev;
3788 iface.ctrl_interface = NULL;
3789 } else {
3790 iface.confname = wpa_s->confname;
3791 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3792 }
3793
3794 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3795 if (!p2pdev_wpa_s) {
3796 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3797 return -1;
3798 }
3799
3800 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3801 wpa_s->pending_interface_name[0] = '\0';
3802 return 0;
3803 }
3804
3805
3806 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3807 const u8 *noa, size_t noa_len)
3808 {
3809 struct wpa_supplicant *wpa_s, *intf = ctx;
3810 char hex[100];
3811
3812 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3813 if (wpa_s->waiting_presence_resp)
3814 break;
3815 }
3816 if (!wpa_s) {
3817 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3818 return;
3819 }
3820 wpa_s->waiting_presence_resp = 0;
3821
3822 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3824 " status=%u noa=%s", MAC2STR(src), status, hex);
3825 }
3826
3827
3828 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3829 size_t ssid_len, u8 *go_dev_addr,
3830 u8 *ret_ssid, size_t *ret_ssid_len,
3831 u8 *intended_iface_addr)
3832 {
3833 struct wpa_supplicant *wpa_s = ctx;
3834 struct wpa_ssid *s;
3835
3836 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3837 if (s) {
3838 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3839 *ret_ssid_len = s->ssid_len;
3840 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3841
3842 if (s->mode != WPAS_MODE_P2P_GO) {
3843 os_memset(intended_iface_addr, 0, ETH_ALEN);
3844 } else if (wpas_p2p_create_iface(wpa_s)) {
3845 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3846 return 0;
3847
3848 os_memcpy(intended_iface_addr,
3849 wpa_s->pending_interface_addr, ETH_ALEN);
3850 } else {
3851 os_memcpy(intended_iface_addr, wpa_s->own_addr,
3852 ETH_ALEN);
3853 }
3854 return 1;
3855 }
3856
3857 return 0;
3858 }
3859
3860
3861 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3862 u8 *ssid, size_t *ssid_len, int *group_iface,
3863 unsigned int *freq)
3864 {
3865 struct wpa_supplicant *wpa_s = ctx;
3866 struct wpa_supplicant *go;
3867 struct wpa_ssid *s;
3868
3869 /*
3870 * group_iface will be set to 1 only if a dedicated interface for P2P
3871 * role is required. First, we try to reuse an active GO. However,
3872 * if it is not present, we will try to reactivate an existing
3873 * persistent group and set group_iface to 1, so the caller will know
3874 * that the pending interface should be used.
3875 */
3876 *group_iface = 0;
3877
3878 if (freq)
3879 *freq = 0;
3880
3881 go = wpas_p2p_get_go_group(wpa_s);
3882 if (!go) {
3883 s = wpas_p2p_get_persistent_go(wpa_s);
3884 *group_iface = wpas_p2p_create_iface(wpa_s);
3885 if (s)
3886 os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3887 else
3888 return 0;
3889 } else {
3890 s = go->current_ssid;
3891 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3892 if (freq)
3893 *freq = go->assoc_freq;
3894 }
3895
3896 os_memcpy(ssid, s->ssid, s->ssid_len);
3897 *ssid_len = s->ssid_len;
3898
3899 return 1;
3900 }
3901
3902
3903 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3904 const u8 *ssid, size_t ssid_len)
3905 {
3906 struct wpa_supplicant *wpa_s = ctx;
3907 struct wpa_ssid *s;
3908 int save_config = 0;
3909 size_t i;
3910
3911 /* Start with our first choice of Persistent Groups */
3912 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3913 if (go && ssid && ssid_len &&
3914 s->ssid_len == ssid_len &&
3915 os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3916 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3917 break;
3918
3919 /* Remove stale persistent group */
3920 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3921 wpa_config_remove_network(wpa_s->conf, s->id);
3922 save_config = 1;
3923 continue;
3924 }
3925
3926 for (i = 0; i < s->num_p2p_clients; i++) {
3927 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3928 peer, ETH_ALEN) != 0)
3929 continue;
3930
3931 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3932 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3933 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3934 break;
3935 }
3936 s->num_p2p_clients--;
3937 save_config = 1;
3938 }
3939
3940 if (save_config)
3941 p2p_config_write(wpa_s);
3942
3943 /* Return TRUE if valid SSID remains */
3944 return s != NULL;
3945 }
3946
3947
3948 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3949 const u8 *feat_cap, size_t feat_cap_len)
3950 {
3951 static const char pref[] = " feature_cap=";
3952 int ret;
3953
3954 buf[0] = '\0';
3955
3956 /*
3957 * We expect a feature capability to contain at least one byte to be
3958 * reported. The string buffer provided by the caller function is
3959 * expected to be big enough to contain all bytes of the attribute for
3960 * known specifications. This function truncates the reported bytes if
3961 * the feature capability data exceeds the string buffer size.
3962 */
3963 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3964 return;
3965
3966 os_memcpy(buf, pref, sizeof(pref));
3967 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3968 buf_len - sizeof(pref) + 1,
3969 feat_cap, feat_cap_len);
3970
3971 if (ret != (2 * (int) feat_cap_len))
3972 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3973 }
3974
3975
3976 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3977 const u8 *adv_mac, const u8 *ses_mac,
3978 const u8 *grp_mac, u32 adv_id, u32 ses_id,
3979 u8 conncap, int passwd_id,
3980 const u8 *persist_ssid,
3981 size_t persist_ssid_size, int response_done,
3982 int prov_start, const char *session_info,
3983 const u8 *feat_cap, size_t feat_cap_len,
3984 unsigned int freq,
3985 const u8 *group_ssid, size_t group_ssid_len)
3986 {
3987 struct wpa_supplicant *wpa_s = ctx;
3988 u8 mac[ETH_ALEN];
3989 struct wpa_ssid *persistent_go, *stale, *s = NULL;
3990 int save_config = 0;
3991 struct wpa_supplicant *go_wpa_s;
3992 char feat_cap_str[256];
3993
3994 if (!dev)
3995 return;
3996
3997 os_memset(mac, 0, ETH_ALEN);
3998 if (!adv_mac)
3999 adv_mac = mac;
4000 if (!ses_mac)
4001 ses_mac = mac;
4002 if (!grp_mac)
4003 grp_mac = mac;
4004
4005 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
4006 feat_cap, feat_cap_len);
4007
4008 if (prov_start) {
4009 if (session_info == NULL) {
4010 wpa_msg_global(wpa_s, MSG_INFO,
4011 P2P_EVENT_P2PS_PROVISION_START MACSTR
4012 " adv_id=%x conncap=%x"
4013 " adv_mac=" MACSTR
4014 " session=%x mac=" MACSTR
4015 " dev_passwd_id=%d%s",
4016 MAC2STR(dev), adv_id, conncap,
4017 MAC2STR(adv_mac),
4018 ses_id, MAC2STR(ses_mac),
4019 passwd_id, feat_cap_str);
4020 } else {
4021 wpa_msg_global(wpa_s, MSG_INFO,
4022 P2P_EVENT_P2PS_PROVISION_START MACSTR
4023 " adv_id=%x conncap=%x"
4024 " adv_mac=" MACSTR
4025 " session=%x mac=" MACSTR
4026 " dev_passwd_id=%d info='%s'%s",
4027 MAC2STR(dev), adv_id, conncap,
4028 MAC2STR(adv_mac),
4029 ses_id, MAC2STR(ses_mac),
4030 passwd_id, session_info, feat_cap_str);
4031 }
4032 return;
4033 }
4034
4035 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4036 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4037
4038 if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4039 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4040 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4041
4042 if (persistent_go && !persistent_go->num_p2p_clients) {
4043 /* remove empty persistent GO */
4044 wpa_config_remove_network(wpa_s->conf,
4045 persistent_go->id);
4046 }
4047
4048 wpa_msg_global(wpa_s, MSG_INFO,
4049 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4050 " status=%d"
4051 " adv_id=%x adv_mac=" MACSTR
4052 " session=%x mac=" MACSTR "%s",
4053 MAC2STR(dev), status,
4054 adv_id, MAC2STR(adv_mac),
4055 ses_id, MAC2STR(ses_mac), feat_cap_str);
4056 return;
4057 }
4058
4059 /* Clean up stale persistent groups with this device */
4060 if (persist_ssid && persist_ssid_size)
4061 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4062 persist_ssid_size);
4063
4064 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4065 is_zero_ether_addr(grp_mac)) {
4066 wpa_dbg(wpa_s, MSG_ERROR,
4067 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4068 return;
4069 }
4070
4071 for (;;) {
4072 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4073 if (!stale)
4074 break;
4075
4076 if (s && s->ssid_len == stale->ssid_len &&
4077 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4078 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4079 break;
4080
4081 /* Remove stale persistent group */
4082 if (stale->mode != WPAS_MODE_P2P_GO ||
4083 stale->num_p2p_clients <= 1) {
4084 wpa_config_remove_network(wpa_s->conf, stale->id);
4085 } else {
4086 size_t i;
4087
4088 for (i = 0; i < stale->num_p2p_clients; i++) {
4089 if (os_memcmp(stale->p2p_client_list +
4090 i * ETH_ALEN,
4091 dev, ETH_ALEN) == 0) {
4092 os_memmove(stale->p2p_client_list +
4093 i * ETH_ALEN,
4094 stale->p2p_client_list +
4095 (i + 1) * ETH_ALEN,
4096 (stale->num_p2p_clients -
4097 i - 1) * ETH_ALEN);
4098 break;
4099 }
4100 }
4101 stale->num_p2p_clients--;
4102 }
4103 save_config = 1;
4104 }
4105
4106 if (save_config)
4107 p2p_config_write(wpa_s);
4108
4109 if (s) {
4110 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4111 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4112
4113 if (persistent_go && s != persistent_go &&
4114 !persistent_go->num_p2p_clients) {
4115 /* remove empty persistent GO */
4116 wpa_config_remove_network(wpa_s->conf,
4117 persistent_go->id);
4118 /* Save config */
4119 }
4120
4121 wpa_msg_global(wpa_s, MSG_INFO,
4122 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4123 " status=%d"
4124 " adv_id=%x adv_mac=" MACSTR
4125 " session=%x mac=" MACSTR
4126 " persist=%d%s",
4127 MAC2STR(dev), status,
4128 adv_id, MAC2STR(adv_mac),
4129 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4130 return;
4131 }
4132
4133 if (conncap == P2PS_SETUP_GROUP_OWNER) {
4134 /*
4135 * We need to copy the interface name. Simply saving a
4136 * pointer isn't enough, since if we use pending_interface_name
4137 * it will be overwritten when the group is added.
4138 */
4139 char go_ifname[100];
4140
4141 go_ifname[0] = '\0';
4142 if (!go_wpa_s) {
4143 wpa_s->global->pending_p2ps_group = 1;
4144 wpa_s->global->pending_p2ps_group_freq = freq;
4145
4146 if (!wpas_p2p_create_iface(wpa_s))
4147 os_memcpy(go_ifname, wpa_s->ifname,
4148 sizeof(go_ifname));
4149 else if (wpa_s->pending_interface_name[0])
4150 os_memcpy(go_ifname,
4151 wpa_s->pending_interface_name,
4152 sizeof(go_ifname));
4153
4154 if (!go_ifname[0]) {
4155 wpas_p2ps_prov_complete(
4156 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4157 dev, adv_mac, ses_mac,
4158 grp_mac, adv_id, ses_id, 0, 0,
4159 NULL, 0, 0, 0, NULL, NULL, 0, 0,
4160 NULL, 0);
4161 return;
4162 }
4163
4164 /* If PD Resp complete, start up the GO */
4165 if (response_done && persistent_go) {
4166 wpas_p2p_group_add_persistent(
4167 wpa_s, persistent_go,
4168 0, 0, freq, 0, 0, 0, 0, NULL,
4169 persistent_go->mode ==
4170 WPAS_MODE_P2P_GO ?
4171 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4172 0, 0);
4173 } else if (response_done) {
4174 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4175 }
4176
4177 if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4178 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4179 ETH_ALEN);
4180 wpa_s->p2ps_method_config_any = 1;
4181 }
4182 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4183 os_memcpy(go_ifname, go_wpa_s->ifname,
4184 sizeof(go_ifname));
4185
4186 if (is_zero_ether_addr(grp_mac)) {
4187 wpa_dbg(go_wpa_s, MSG_DEBUG,
4188 "P2P: Setting PIN-1 for ANY");
4189 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4190 "12345670", NULL, 0,
4191 0);
4192 } else {
4193 wpa_dbg(go_wpa_s, MSG_DEBUG,
4194 "P2P: Setting PIN-1 for " MACSTR,
4195 MAC2STR(grp_mac));
4196 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4197 "12345670", NULL, 0,
4198 0);
4199 }
4200
4201 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4202 wpa_s->p2ps_method_config_any = 1;
4203 }
4204
4205 wpa_msg_global(wpa_s, MSG_INFO,
4206 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4207 " status=%d conncap=%x"
4208 " adv_id=%x adv_mac=" MACSTR
4209 " session=%x mac=" MACSTR
4210 " dev_passwd_id=%d go=%s%s",
4211 MAC2STR(dev), status, conncap,
4212 adv_id, MAC2STR(adv_mac),
4213 ses_id, MAC2STR(ses_mac),
4214 passwd_id, go_ifname, feat_cap_str);
4215 return;
4216 }
4217
4218 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4219 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4220
4221 if (persistent_go && !persistent_go->num_p2p_clients) {
4222 /* remove empty persistent GO */
4223 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4224 }
4225
4226 if (conncap == P2PS_SETUP_CLIENT) {
4227 char ssid_hex[32 * 2 + 1];
4228
4229 if (group_ssid)
4230 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4231 group_ssid, group_ssid_len);
4232 else
4233 ssid_hex[0] = '\0';
4234 wpa_msg_global(wpa_s, MSG_INFO,
4235 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4236 " status=%d conncap=%x"
4237 " adv_id=%x adv_mac=" MACSTR
4238 " session=%x mac=" MACSTR
4239 " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4240 MAC2STR(dev), status, conncap,
4241 adv_id, MAC2STR(adv_mac),
4242 ses_id, MAC2STR(ses_mac),
4243 passwd_id, MAC2STR(grp_mac), feat_cap_str,
4244 group_ssid ? " group_ssid=" : "", ssid_hex);
4245 } else {
4246 wpa_msg_global(wpa_s, MSG_INFO,
4247 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4248 " status=%d conncap=%x"
4249 " adv_id=%x adv_mac=" MACSTR
4250 " session=%x mac=" MACSTR
4251 " dev_passwd_id=%d%s",
4252 MAC2STR(dev), status, conncap,
4253 adv_id, MAC2STR(adv_mac),
4254 ses_id, MAC2STR(ses_mac),
4255 passwd_id, feat_cap_str);
4256 }
4257 }
4258
4259
4260 static int _wpas_p2p_in_progress(void *ctx)
4261 {
4262 struct wpa_supplicant *wpa_s = ctx;
4263 return wpas_p2p_in_progress(wpa_s);
4264 }
4265
4266
4267 static int wpas_prov_disc_resp_cb(void *ctx)
4268 {
4269 struct wpa_supplicant *wpa_s = ctx;
4270 struct wpa_ssid *persistent_go;
4271 unsigned int freq;
4272
4273 if (!wpa_s->global->pending_p2ps_group)
4274 return 0;
4275
4276 freq = wpa_s->global->pending_p2ps_group_freq;
4277 wpa_s->global->pending_p2ps_group_freq = 0;
4278 wpa_s->global->pending_p2ps_group = 0;
4279
4280 if (wpas_p2p_get_go_group(wpa_s))
4281 return 0;
4282 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4283
4284 if (persistent_go) {
4285 wpas_p2p_group_add_persistent(
4286 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4287 persistent_go->mode == WPAS_MODE_P2P_GO ?
4288 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4289 } else {
4290 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4291 }
4292
4293 return 1;
4294 }
4295
4296
4297 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4298 unsigned int *len,
4299 unsigned int *freq_list)
4300 {
4301 struct wpa_supplicant *wpa_s = ctx;
4302
4303 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4304 WPA_IF_P2P_CLIENT, len, freq_list);
4305 }
4306
4307
4308 /**
4309 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4310 * @global: Pointer to global data from wpa_supplicant_init()
4311 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4312 * Returns: 0 on success, -1 on failure
4313 */
4314 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4315 {
4316 struct p2p_config p2p;
4317 int i;
4318
4319 if (wpa_s->conf->p2p_disabled)
4320 return 0;
4321
4322 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4323 return 0;
4324
4325 if (global->p2p)
4326 return 0;
4327
4328 os_memset(&p2p, 0, sizeof(p2p));
4329 p2p.cb_ctx = wpa_s;
4330 p2p.debug_print = wpas_p2p_debug_print;
4331 p2p.p2p_scan = wpas_p2p_scan;
4332 p2p.send_action = wpas_send_action;
4333 p2p.send_action_done = wpas_send_action_done;
4334 p2p.go_neg_completed = wpas_go_neg_completed;
4335 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4336 p2p.dev_found = wpas_dev_found;
4337 p2p.dev_lost = wpas_dev_lost;
4338 p2p.find_stopped = wpas_find_stopped;
4339 p2p.start_listen = wpas_start_listen;
4340 p2p.stop_listen = wpas_stop_listen;
4341 p2p.send_probe_resp = wpas_send_probe_resp;
4342 p2p.sd_request = wpas_sd_request;
4343 p2p.sd_response = wpas_sd_response;
4344 p2p.prov_disc_req = wpas_prov_disc_req;
4345 p2p.prov_disc_resp = wpas_prov_disc_resp;
4346 p2p.prov_disc_fail = wpas_prov_disc_fail;
4347 p2p.invitation_process = wpas_invitation_process;
4348 p2p.invitation_received = wpas_invitation_received;
4349 p2p.invitation_result = wpas_invitation_result;
4350 p2p.get_noa = wpas_get_noa;
4351 p2p.go_connected = wpas_go_connected;
4352 p2p.presence_resp = wpas_presence_resp;
4353 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4354 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4355 p2p.get_persistent_group = wpas_get_persistent_group;
4356 p2p.get_go_info = wpas_get_go_info;
4357 p2p.remove_stale_groups = wpas_remove_stale_groups;
4358 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4359 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4360 p2p.p2ps_group_capability = p2ps_group_capability;
4361 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4362
4363 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4364 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4365 p2p.dev_name = wpa_s->conf->device_name;
4366 p2p.manufacturer = wpa_s->conf->manufacturer;
4367 p2p.model_name = wpa_s->conf->model_name;
4368 p2p.model_number = wpa_s->conf->model_number;
4369 p2p.serial_number = wpa_s->conf->serial_number;
4370 if (wpa_s->wps) {
4371 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4372 p2p.config_methods = wpa_s->wps->config_methods;
4373 }
4374
4375 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4376 wpa_printf(MSG_ERROR,
4377 "P2P: Failed to configure supported channel list");
4378 return -1;
4379 }
4380
4381 if (wpa_s->conf->p2p_listen_reg_class &&
4382 wpa_s->conf->p2p_listen_channel) {
4383 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4384 p2p.channel = wpa_s->conf->p2p_listen_channel;
4385 p2p.channel_forced = 1;
4386 } else {
4387 /*
4388 * Pick one of the social channels randomly as the listen
4389 * channel.
4390 */
4391 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4392 &p2p.channel) != 0) {
4393 wpa_printf(MSG_INFO,
4394 "P2P: No social channels supported by the driver - do not enable P2P");
4395 return 0;
4396 }
4397 p2p.channel_forced = 0;
4398 }
4399 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4400 p2p.reg_class, p2p.channel);
4401
4402 if (wpa_s->conf->p2p_oper_reg_class &&
4403 wpa_s->conf->p2p_oper_channel) {
4404 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4405 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4406 p2p.cfg_op_channel = 1;
4407 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4408 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4409
4410 } else {
4411 /*
4412 * Use random operation channel from 2.4 GHz band social
4413 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4414 * other preference is indicated.
4415 */
4416 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4417 &p2p.op_channel) != 0) {
4418 wpa_printf(MSG_ERROR,
4419 "P2P: Failed to select random social channel as operation channel");
4420 return -1;
4421 }
4422 p2p.cfg_op_channel = 0;
4423 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4424 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4425 }
4426
4427 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4428 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4429 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4430 }
4431
4432 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4433 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4434 p2p.country[2] = 0x04;
4435 } else
4436 os_memcpy(p2p.country, "XX\x04", 3);
4437
4438 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4439 WPS_DEV_TYPE_LEN);
4440
4441 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4442 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4443 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4444
4445 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4446 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4447
4448 p2p.max_peers = 100;
4449
4450 if (wpa_s->conf->p2p_ssid_postfix) {
4451 p2p.ssid_postfix_len =
4452 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4453 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4454 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4455 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4456 p2p.ssid_postfix_len);
4457 }
4458
4459 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4460
4461 p2p.max_listen = wpa_s->max_remain_on_chan;
4462
4463 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4464 wpa_s->conf->p2p_passphrase_len <= 63)
4465 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4466 else
4467 p2p.passphrase_len = 8;
4468
4469 global->p2p = p2p_init(&p2p);
4470 if (global->p2p == NULL)
4471 return -1;
4472 global->p2p_init_wpa_s = wpa_s;
4473
4474 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4475 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4476 continue;
4477 p2p_add_wps_vendor_extension(
4478 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4479 }
4480
4481 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4482
4483 return 0;
4484 }
4485
4486
4487 /**
4488 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4489 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4490 *
4491 * This function deinitialize per-interface P2P data.
4492 */
4493 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4494 {
4495 if (wpa_s->driver && wpa_s->drv_priv)
4496 wpa_drv_probe_req_report(wpa_s, 0);
4497
4498 if (wpa_s->go_params) {
4499 /* Clear any stored provisioning info */
4500 p2p_clear_provisioning_info(
4501 wpa_s->global->p2p,
4502 wpa_s->go_params->peer_device_addr);
4503 }
4504
4505 os_free(wpa_s->go_params);
4506 wpa_s->go_params = NULL;
4507 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4508 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4509 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4510 wpa_s->p2p_long_listen = 0;
4511 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4512 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4513 wpas_p2p_remove_pending_group_interface(wpa_s);
4514 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4515 wpas_p2p_listen_work_done(wpa_s);
4516 if (wpa_s->p2p_send_action_work) {
4517 os_free(wpa_s->p2p_send_action_work->ctx);
4518 radio_work_done(wpa_s->p2p_send_action_work);
4519 wpa_s->p2p_send_action_work = NULL;
4520 }
4521 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4522
4523 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4524 wpa_s->p2p_oob_dev_pw = NULL;
4525
4526 os_free(wpa_s->p2p_group_common_freqs);
4527 wpa_s->p2p_group_common_freqs = NULL;
4528 wpa_s->p2p_group_common_freqs_num = 0;
4529
4530 /* TODO: remove group interface from the driver if this wpa_s instance
4531 * is on top of a P2P group interface */
4532 }
4533
4534
4535 /**
4536 * wpas_p2p_deinit_global - Deinitialize global P2P module
4537 * @global: Pointer to global data from wpa_supplicant_init()
4538 *
4539 * This function deinitializes the global (per device) P2P module.
4540 */
4541 static void wpas_p2p_deinit_global(struct wpa_global *global)
4542 {
4543 struct wpa_supplicant *wpa_s, *tmp;
4544
4545 wpa_s = global->ifaces;
4546
4547 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4548
4549 /* Remove remaining P2P group interfaces */
4550 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4551 wpa_s = wpa_s->next;
4552 while (wpa_s) {
4553 tmp = global->ifaces;
4554 while (tmp &&
4555 (tmp == wpa_s ||
4556 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4557 tmp = tmp->next;
4558 }
4559 if (tmp == NULL)
4560 break;
4561 /* Disconnect from the P2P group and deinit the interface */
4562 wpas_p2p_disconnect(tmp);
4563 }
4564
4565 /*
4566 * Deinit GO data on any possibly remaining interface (if main
4567 * interface is used as GO).
4568 */
4569 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4570 if (wpa_s->ap_iface)
4571 wpas_p2p_group_deinit(wpa_s);
4572 }
4573
4574 p2p_deinit(global->p2p);
4575 global->p2p = NULL;
4576 global->p2p_init_wpa_s = NULL;
4577 }
4578
4579
4580 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4581 {
4582 if (wpa_s->conf->p2p_no_group_iface)
4583 return 0; /* separate interface disabled per configuration */
4584 if (wpa_s->drv_flags &
4585 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4586 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4587 return 1; /* P2P group requires a new interface in every case
4588 */
4589 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4590 return 0; /* driver does not support concurrent operations */
4591 if (wpa_s->global->ifaces->next)
4592 return 1; /* more that one interface already in use */
4593 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4594 return 1; /* this interface is already in use */
4595 return 0;
4596 }
4597
4598
4599 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4600 const u8 *peer_addr,
4601 enum p2p_wps_method wps_method,
4602 int go_intent, const u8 *own_interface_addr,
4603 unsigned int force_freq, int persistent_group,
4604 struct wpa_ssid *ssid, unsigned int pref_freq)
4605 {
4606 if (persistent_group && wpa_s->conf->persistent_reconnect)
4607 persistent_group = 2;
4608
4609 /*
4610 * Increase GO config timeout if HT40 is used since it takes some time
4611 * to scan channels for coex purposes before the BSS can be started.
4612 */
4613 p2p_set_config_timeout(wpa_s->global->p2p,
4614 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4615
4616 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4617 go_intent, own_interface_addr, force_freq,
4618 persistent_group, ssid ? ssid->ssid : NULL,
4619 ssid ? ssid->ssid_len : 0,
4620 wpa_s->p2p_pd_before_go_neg, pref_freq,
4621 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4622 0);
4623 }
4624
4625
4626 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4627 const u8 *peer_addr,
4628 enum p2p_wps_method wps_method,
4629 int go_intent, const u8 *own_interface_addr,
4630 unsigned int force_freq, int persistent_group,
4631 struct wpa_ssid *ssid, unsigned int pref_freq)
4632 {
4633 if (persistent_group && wpa_s->conf->persistent_reconnect)
4634 persistent_group = 2;
4635
4636 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4637 go_intent, own_interface_addr, force_freq,
4638 persistent_group, ssid ? ssid->ssid : NULL,
4639 ssid ? ssid->ssid_len : 0, pref_freq,
4640 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4641 0);
4642 }
4643
4644
4645 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4646 {
4647 wpa_s->p2p_join_scan_count++;
4648 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4649 wpa_s->p2p_join_scan_count);
4650 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4651 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4652 " for join operationg - stop join attempt",
4653 MAC2STR(wpa_s->pending_join_iface_addr));
4654 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4655 if (wpa_s->p2p_auto_pd) {
4656 wpa_s->p2p_auto_pd = 0;
4657 wpa_msg_global(wpa_s, MSG_INFO,
4658 P2P_EVENT_PROV_DISC_FAILURE
4659 " p2p_dev_addr=" MACSTR " status=N/A",
4660 MAC2STR(wpa_s->pending_join_dev_addr));
4661 return;
4662 }
4663 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4664 P2P_EVENT_GROUP_FORMATION_FAILURE);
4665 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4666 }
4667 }
4668
4669
4670 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4671 {
4672 int res;
4673 unsigned int num, i;
4674 struct wpa_used_freq_data *freqs;
4675
4676 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4677 /* Multiple channels are supported and not all are in use */
4678 return 0;
4679 }
4680
4681 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4682 sizeof(struct wpa_used_freq_data));
4683 if (!freqs)
4684 return 1;
4685
4686 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4687 wpa_s->num_multichan_concurrent);
4688
4689 for (i = 0; i < num; i++) {
4690 if (freqs[i].freq == freq) {
4691 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4692 freq);
4693 res = 0;
4694 goto exit_free;
4695 }
4696 }
4697
4698 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4699 res = 1;
4700
4701 exit_free:
4702 os_free(freqs);
4703 return res;
4704 }
4705
4706
4707 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4708 const u8 *peer_dev_addr)
4709 {
4710 struct wpa_bss *bss;
4711 int updated;
4712
4713 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4714 if (bss == NULL)
4715 return -1;
4716 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4717 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4718 "last scan");
4719 return 0;
4720 }
4721
4722 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4723 &bss->last_update);
4724 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4725 "%ld.%06ld (%supdated in last scan)",
4726 bss->last_update.sec, bss->last_update.usec,
4727 updated ? "": "not ");
4728
4729 return updated;
4730 }
4731
4732
4733 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4734 struct wpa_scan_results *scan_res)
4735 {
4736 struct wpa_bss *bss = NULL;
4737 int freq;
4738 u8 iface_addr[ETH_ALEN];
4739
4740 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4741
4742 if (wpa_s->global->p2p_disabled)
4743 return;
4744
4745 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4746 scan_res ? (int) scan_res->num : -1,
4747 wpa_s->p2p_auto_join ? "auto_" : "");
4748
4749 if (scan_res)
4750 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4751
4752 if (wpa_s->p2p_auto_pd) {
4753 int join = wpas_p2p_peer_go(wpa_s,
4754 wpa_s->pending_join_dev_addr);
4755 if (join == 0 &&
4756 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4757 wpa_s->auto_pd_scan_retry++;
4758 bss = wpa_bss_get_bssid_latest(
4759 wpa_s, wpa_s->pending_join_dev_addr);
4760 if (bss) {
4761 freq = bss->freq;
4762 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4763 "the peer " MACSTR " at %d MHz",
4764 wpa_s->auto_pd_scan_retry,
4765 MAC2STR(wpa_s->
4766 pending_join_dev_addr),
4767 freq);
4768 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4769 return;
4770 }
4771 }
4772
4773 if (join < 0)
4774 join = 0;
4775
4776 wpa_s->p2p_auto_pd = 0;
4777 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4778 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4779 MAC2STR(wpa_s->pending_join_dev_addr), join);
4780 if (p2p_prov_disc_req(wpa_s->global->p2p,
4781 wpa_s->pending_join_dev_addr, NULL,
4782 wpa_s->pending_pd_config_methods, join,
4783 0, wpa_s->user_initiated_pd) < 0) {
4784 wpa_s->p2p_auto_pd = 0;
4785 wpa_msg_global(wpa_s, MSG_INFO,
4786 P2P_EVENT_PROV_DISC_FAILURE
4787 " p2p_dev_addr=" MACSTR " status=N/A",
4788 MAC2STR(wpa_s->pending_join_dev_addr));
4789 }
4790 return;
4791 }
4792
4793 if (wpa_s->p2p_auto_join) {
4794 int join = wpas_p2p_peer_go(wpa_s,
4795 wpa_s->pending_join_dev_addr);
4796 if (join < 0) {
4797 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4798 "running a GO -> use GO Negotiation");
4799 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4800 P2P_EVENT_FALLBACK_TO_GO_NEG
4801 "reason=peer-not-running-GO");
4802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4803 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4804 wpa_s->p2p_persistent_group, 0, 0, 0,
4805 wpa_s->p2p_go_intent,
4806 wpa_s->p2p_connect_freq,
4807 wpa_s->p2p_go_vht_center_freq2,
4808 wpa_s->p2p_persistent_id,
4809 wpa_s->p2p_pd_before_go_neg,
4810 wpa_s->p2p_go_ht40,
4811 wpa_s->p2p_go_vht,
4812 wpa_s->p2p_go_max_oper_chwidth,
4813 NULL, 0);
4814 return;
4815 }
4816
4817 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4818 "try to join the group", join ? "" :
4819 " in older scan");
4820 if (!join) {
4821 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4822 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4823 wpa_s->p2p_fallback_to_go_neg = 1;
4824 }
4825 }
4826
4827 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4828 wpa_s->pending_join_iface_addr);
4829 if (freq < 0 &&
4830 p2p_get_interface_addr(wpa_s->global->p2p,
4831 wpa_s->pending_join_dev_addr,
4832 iface_addr) == 0 &&
4833 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4834 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4835 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4836 "address for join from " MACSTR " to " MACSTR
4837 " based on newly discovered P2P peer entry",
4838 MAC2STR(wpa_s->pending_join_iface_addr),
4839 MAC2STR(iface_addr));
4840 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4841 ETH_ALEN);
4842
4843 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4844 wpa_s->pending_join_iface_addr);
4845 }
4846 if (freq >= 0) {
4847 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4848 "from P2P peer table: %d MHz", freq);
4849 }
4850 if (wpa_s->p2p_join_ssid_len) {
4851 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4852 MACSTR " and SSID %s",
4853 MAC2STR(wpa_s->pending_join_iface_addr),
4854 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4855 wpa_s->p2p_join_ssid_len));
4856 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4857 wpa_s->p2p_join_ssid,
4858 wpa_s->p2p_join_ssid_len);
4859 } else if (!bss) {
4860 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4861 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4862 bss = wpa_bss_get_bssid_latest(wpa_s,
4863 wpa_s->pending_join_iface_addr);
4864 }
4865 if (bss) {
4866 u8 dev_addr[ETH_ALEN];
4867
4868 freq = bss->freq;
4869 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4870 "from BSS table: %d MHz (SSID %s)", freq,
4871 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4872 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4873 dev_addr) == 0 &&
4874 os_memcmp(wpa_s->pending_join_dev_addr,
4875 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4876 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4877 ETH_ALEN) != 0) {
4878 wpa_printf(MSG_DEBUG,
4879 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4880 MAC2STR(dev_addr),
4881 MAC2STR(wpa_s->pending_join_dev_addr));
4882 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4883 ETH_ALEN);
4884 }
4885 }
4886 if (freq > 0) {
4887 u16 method;
4888
4889 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4890 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4891 P2P_EVENT_GROUP_FORMATION_FAILURE
4892 "reason=FREQ_CONFLICT");
4893 wpas_notify_p2p_group_formation_failure(
4894 wpa_s, "FREQ_CONFLICT");
4895 return;
4896 }
4897
4898 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4899 "prior to joining an existing group (GO " MACSTR
4900 " freq=%u MHz)",
4901 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4902 wpa_s->pending_pd_before_join = 1;
4903
4904 switch (wpa_s->pending_join_wps_method) {
4905 case WPS_PIN_DISPLAY:
4906 method = WPS_CONFIG_KEYPAD;
4907 break;
4908 case WPS_PIN_KEYPAD:
4909 method = WPS_CONFIG_DISPLAY;
4910 break;
4911 case WPS_PBC:
4912 method = WPS_CONFIG_PUSHBUTTON;
4913 break;
4914 case WPS_P2PS:
4915 method = WPS_CONFIG_P2PS;
4916 break;
4917 default:
4918 method = 0;
4919 break;
4920 }
4921
4922 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4923 wpa_s->pending_join_dev_addr) ==
4924 method)) {
4925 /*
4926 * We have already performed provision discovery for
4927 * joining the group. Proceed directly to join
4928 * operation without duplicated provision discovery. */
4929 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4930 "with " MACSTR " already done - proceed to "
4931 "join",
4932 MAC2STR(wpa_s->pending_join_dev_addr));
4933 wpa_s->pending_pd_before_join = 0;
4934 goto start;
4935 }
4936
4937 if (p2p_prov_disc_req(wpa_s->global->p2p,
4938 wpa_s->pending_join_dev_addr,
4939 NULL, method, 1,
4940 freq, wpa_s->user_initiated_pd) < 0) {
4941 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4942 "Discovery Request before joining an "
4943 "existing group");
4944 wpa_s->pending_pd_before_join = 0;
4945 goto start;
4946 }
4947 return;
4948 }
4949
4950 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4951 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4952 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4953 wpas_p2p_check_join_scan_limit(wpa_s);
4954 return;
4955
4956 start:
4957 /* Start join operation immediately */
4958 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4959 wpa_s->p2p_join_ssid_len);
4960 }
4961
4962
4963 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4964 const u8 *ssid, size_t ssid_len)
4965 {
4966 int ret;
4967 struct wpa_driver_scan_params params;
4968 struct wpabuf *wps_ie, *ies;
4969 size_t ielen;
4970 int freqs[2] = { 0, 0 };
4971 unsigned int bands;
4972
4973 os_memset(&params, 0, sizeof(params));
4974
4975 /* P2P Wildcard SSID */
4976 params.num_ssids = 1;
4977 if (ssid && ssid_len) {
4978 params.ssids[0].ssid = ssid;
4979 params.ssids[0].ssid_len = ssid_len;
4980 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4981 wpa_s->p2p_join_ssid_len = ssid_len;
4982 } else {
4983 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4984 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4985 wpa_s->p2p_join_ssid_len = 0;
4986 }
4987
4988 wpa_s->wps->dev.p2p = 1;
4989 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4990 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4991 NULL);
4992 if (wps_ie == NULL) {
4993 wpas_p2p_scan_res_join(wpa_s, NULL);
4994 return;
4995 }
4996
4997 if (!freq) {
4998 int oper_freq;
4999 /*
5000 * If freq is not provided, check the operating freq of the GO
5001 * and use a single channel scan on if possible.
5002 */
5003 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5004 wpa_s->pending_join_iface_addr);
5005 if (oper_freq > 0)
5006 freq = oper_freq;
5007 }
5008 if (freq > 0) {
5009 freqs[0] = freq;
5010 params.freqs = freqs;
5011 }
5012
5013 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5014 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5015 if (ies == NULL) {
5016 wpabuf_free(wps_ie);
5017 wpas_p2p_scan_res_join(wpa_s, NULL);
5018 return;
5019 }
5020 wpabuf_put_buf(ies, wps_ie);
5021 wpabuf_free(wps_ie);
5022
5023 bands = wpas_get_bands(wpa_s, freqs);
5024 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5025
5026 params.p2p_probe = 1;
5027 params.extra_ies = wpabuf_head(ies);
5028 params.extra_ies_len = wpabuf_len(ies);
5029
5030 if (wpa_s->clear_driver_scan_cache) {
5031 wpa_printf(MSG_DEBUG,
5032 "Request driver to clear scan cache due to local BSS flush");
5033 params.only_new_results = 1;
5034 }
5035
5036 /*
5037 * Run a scan to update BSS table and start Provision Discovery once
5038 * the new scan results become available.
5039 */
5040 ret = wpa_drv_scan(wpa_s, &params);
5041 if (!ret) {
5042 os_get_reltime(&wpa_s->scan_trigger_time);
5043 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5044 wpa_s->own_scan_requested = 1;
5045 wpa_s->clear_driver_scan_cache = 0;
5046 }
5047
5048 wpabuf_free(ies);
5049
5050 if (ret) {
5051 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5052 "try again later");
5053 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5054 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5055 wpas_p2p_check_join_scan_limit(wpa_s);
5056 }
5057 }
5058
5059
5060 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5061 {
5062 struct wpa_supplicant *wpa_s = eloop_ctx;
5063 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5064 }
5065
5066
5067 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5068 const u8 *dev_addr, enum p2p_wps_method wps_method,
5069 int auto_join, int op_freq,
5070 const u8 *ssid, size_t ssid_len)
5071 {
5072 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5073 MACSTR " dev " MACSTR " op_freq=%d)%s",
5074 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5075 auto_join ? " (auto_join)" : "");
5076 if (ssid && ssid_len) {
5077 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5078 wpa_ssid_txt(ssid, ssid_len));
5079 }
5080
5081 wpa_s->p2p_auto_pd = 0;
5082 wpa_s->p2p_auto_join = !!auto_join;
5083 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5084 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5085 wpa_s->pending_join_wps_method = wps_method;
5086
5087 /* Make sure we are not running find during connection establishment */
5088 wpas_p2p_stop_find(wpa_s);
5089
5090 wpa_s->p2p_join_scan_count = 0;
5091 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5092 return 0;
5093 }
5094
5095
5096 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5097 const u8 *ssid, size_t ssid_len)
5098 {
5099 struct wpa_supplicant *group;
5100 struct p2p_go_neg_results res;
5101 struct wpa_bss *bss;
5102
5103 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5104 if (group == NULL)
5105 return -1;
5106 if (group != wpa_s) {
5107 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5108 sizeof(group->p2p_pin));
5109 group->p2p_wps_method = wpa_s->p2p_wps_method;
5110 }
5111
5112 /*
5113 * Need to mark the current interface for p2p_group_formation
5114 * when a separate group interface is not used. This is needed
5115 * to allow p2p_cancel stop a pending p2p_connect-join.
5116 * wpas_p2p_init_group_interface() addresses this for the case
5117 * where a separate group interface is used.
5118 */
5119 if (group == wpa_s->parent)
5120 wpa_s->global->p2p_group_formation = group;
5121
5122 group->p2p_in_provisioning = 1;
5123 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5124
5125 os_memset(&res, 0, sizeof(res));
5126 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5127 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5128 ETH_ALEN);
5129 res.wps_method = wpa_s->pending_join_wps_method;
5130 if (freq && ssid && ssid_len) {
5131 res.freq = freq;
5132 res.ssid_len = ssid_len;
5133 os_memcpy(res.ssid, ssid, ssid_len);
5134 } else {
5135 if (ssid && ssid_len) {
5136 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5137 ssid, ssid_len);
5138 } else {
5139 bss = wpa_bss_get_bssid_latest(
5140 wpa_s, wpa_s->pending_join_iface_addr);
5141 }
5142 if (bss) {
5143 res.freq = bss->freq;
5144 res.ssid_len = bss->ssid_len;
5145 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5146 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5147 bss->freq,
5148 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5149 } else if (ssid && ssid_len) {
5150 res.ssid_len = ssid_len;
5151 os_memcpy(res.ssid, ssid, ssid_len);
5152 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5153 wpa_ssid_txt(ssid, ssid_len));
5154 }
5155 }
5156
5157 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5158 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5159 "starting client");
5160 wpa_drv_cancel_remain_on_channel(wpa_s);
5161 wpa_s->off_channel_freq = 0;
5162 wpa_s->roc_waiting_drv_freq = 0;
5163 }
5164 wpas_start_wps_enrollee(group, &res);
5165
5166 /*
5167 * Allow a longer timeout for join-a-running-group than normal 15
5168 * second group formation timeout since the GO may not have authorized
5169 * our connection yet.
5170 */
5171 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5172 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5173 wpa_s, NULL);
5174
5175 return 0;
5176 }
5177
5178
5179 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5180 int *force_freq, int *pref_freq, int go,
5181 unsigned int *pref_freq_list,
5182 unsigned int *num_pref_freq)
5183 {
5184 struct wpa_used_freq_data *freqs;
5185 int res, best_freq, num_unused;
5186 unsigned int freq_in_use = 0, num, i, max_pref_freq;
5187
5188 max_pref_freq = *num_pref_freq;
5189 *num_pref_freq = 0;
5190
5191 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5192 sizeof(struct wpa_used_freq_data));
5193 if (!freqs)
5194 return -1;
5195
5196 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5197 wpa_s->num_multichan_concurrent);
5198
5199 /*
5200 * It is possible that the total number of used frequencies is bigger
5201 * than the number of frequencies used for P2P, so get the system wide
5202 * number of unused frequencies.
5203 */
5204 num_unused = wpas_p2p_num_unused_channels(wpa_s);
5205
5206 wpa_printf(MSG_DEBUG,
5207 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5208 freq, wpa_s->num_multichan_concurrent, num, num_unused);
5209
5210 if (freq > 0) {
5211 int ret;
5212 if (go)
5213 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5214 else
5215 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5216 if (!ret) {
5217 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5218 ieee80211_is_dfs(freq, wpa_s->hw.modes,
5219 wpa_s->hw.num_modes)) {
5220 /*
5221 * If freq is a DFS channel and DFS is offloaded
5222 * to the driver, allow P2P GO to use it.
5223 */
5224 wpa_printf(MSG_DEBUG,
5225 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5226 freq);
5227 } else {
5228 wpa_printf(MSG_DEBUG,
5229 "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5230 freq);
5231 res = -3;
5232 goto exit_free;
5233 }
5234 }
5235
5236 for (i = 0; i < num; i++) {
5237 if (freqs[i].freq == freq)
5238 freq_in_use = 1;
5239 }
5240
5241 if (num_unused <= 0 && !freq_in_use) {
5242 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5243 freq);
5244 res = -2;
5245 goto exit_free;
5246 }
5247 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5248 "requested channel (%u MHz)", freq);
5249 *force_freq = freq;
5250 goto exit_ok;
5251 }
5252
5253 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5254
5255 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5256 enum wpa_driver_if_type iface_type;
5257
5258 if (go)
5259 iface_type = WPA_IF_P2P_GO;
5260 else
5261 iface_type = WPA_IF_P2P_CLIENT;
5262
5263 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5264 best_freq, go);
5265
5266 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5267 &max_pref_freq,
5268 pref_freq_list);
5269 if (!res && max_pref_freq > 0) {
5270 *num_pref_freq = max_pref_freq;
5271 i = 0;
5272 while (i < *num_pref_freq &&
5273 (!p2p_supported_freq(wpa_s->global->p2p,
5274 pref_freq_list[i]) ||
5275 wpas_p2p_disallowed_freq(wpa_s->global,
5276 pref_freq_list[i]))) {
5277 wpa_printf(MSG_DEBUG,
5278 "P2P: preferred_freq_list[%d]=%d is disallowed",
5279 i, pref_freq_list[i]);
5280 i++;
5281 }
5282 if (i != *num_pref_freq) {
5283 best_freq = pref_freq_list[i];
5284 wpa_printf(MSG_DEBUG,
5285 "P2P: Using preferred_freq_list[%d]=%d",
5286 i, best_freq);
5287 } else {
5288 wpa_printf(MSG_DEBUG,
5289 "P2P: All driver preferred frequencies are disallowed for P2P use");
5290 *num_pref_freq = 0;
5291 }
5292 } else {
5293 wpa_printf(MSG_DEBUG,
5294 "P2P: No preferred frequency list available");
5295 }
5296 }
5297
5298 /* We have a candidate frequency to use */
5299 if (best_freq > 0) {
5300 if (*pref_freq == 0 && num_unused > 0) {
5301 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5302 best_freq);
5303 *pref_freq = best_freq;
5304 } else {
5305 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5306 best_freq);
5307 *force_freq = best_freq;
5308 }
5309 } else if (num_unused > 0) {
5310 wpa_printf(MSG_DEBUG,
5311 "P2P: Current operating channels are not available for P2P. Try to use another channel");
5312 *force_freq = 0;
5313 } else {
5314 wpa_printf(MSG_DEBUG,
5315 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5316 res = -2;
5317 goto exit_free;
5318 }
5319
5320 exit_ok:
5321 res = 0;
5322 exit_free:
5323 os_free(freqs);
5324 return res;
5325 }
5326
5327
5328 /**
5329 * wpas_p2p_connect - Request P2P Group Formation to be started
5330 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5331 * @peer_addr: Address of the peer P2P Device
5332 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5333 * @persistent_group: Whether to create a persistent group
5334 * @auto_join: Whether to select join vs. GO Negotiation automatically
5335 * @join: Whether to join an existing group (as a client) instead of starting
5336 * Group Owner negotiation; @peer_addr is BSSID in that case
5337 * @auth: Whether to only authorize the connection instead of doing that and
5338 * initiating Group Owner negotiation
5339 * @go_intent: GO Intent or -1 to use default
5340 * @freq: Frequency for the group or 0 for auto-selection
5341 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5342 * @persistent_id: Persistent group credentials to use for forcing GO
5343 * parameters or -1 to generate new values (SSID/passphrase)
5344 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5345 * interoperability workaround when initiating group formation
5346 * @ht40: Start GO with 40 MHz channel width
5347 * @vht: Start GO with VHT support
5348 * @vht_chwidth: Channel width supported by GO operating with VHT support
5349 * (VHT_CHANWIDTH_*).
5350 * @group_ssid: Specific Group SSID for join or %NULL if not set
5351 * @group_ssid_len: Length of @group_ssid in octets
5352 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5353 * failure, -2 on failure due to channel not currently available,
5354 * -3 if forced channel is not supported
5355 */
5356 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5357 const char *pin, enum p2p_wps_method wps_method,
5358 int persistent_group, int auto_join, int join, int auth,
5359 int go_intent, int freq, unsigned int vht_center_freq2,
5360 int persistent_id, int pd, int ht40, int vht,
5361 unsigned int vht_chwidth, const u8 *group_ssid,
5362 size_t group_ssid_len)
5363 {
5364 int force_freq = 0, pref_freq = 0;
5365 int ret = 0, res;
5366 enum wpa_driver_if_type iftype;
5367 const u8 *if_addr;
5368 struct wpa_ssid *ssid = NULL;
5369 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5370
5371 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5372 return -1;
5373
5374 if (persistent_id >= 0) {
5375 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5376 if (ssid == NULL || ssid->disabled != 2 ||
5377 ssid->mode != WPAS_MODE_P2P_GO)
5378 return -1;
5379 }
5380
5381 os_free(wpa_s->global->add_psk);
5382 wpa_s->global->add_psk = NULL;
5383
5384 wpa_s->global->p2p_fail_on_wps_complete = 0;
5385 wpa_s->global->pending_p2ps_group = 0;
5386 wpa_s->global->pending_p2ps_group_freq = 0;
5387 wpa_s->p2ps_method_config_any = 0;
5388
5389 if (go_intent < 0)
5390 go_intent = wpa_s->conf->p2p_go_intent;
5391
5392 if (!auth)
5393 wpa_s->p2p_long_listen = 0;
5394
5395 wpa_s->p2p_wps_method = wps_method;
5396 wpa_s->p2p_persistent_group = !!persistent_group;
5397 wpa_s->p2p_persistent_id = persistent_id;
5398 wpa_s->p2p_go_intent = go_intent;
5399 wpa_s->p2p_connect_freq = freq;
5400 wpa_s->p2p_fallback_to_go_neg = 0;
5401 wpa_s->p2p_pd_before_go_neg = !!pd;
5402 wpa_s->p2p_go_ht40 = !!ht40;
5403 wpa_s->p2p_go_vht = !!vht;
5404 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5405 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5406
5407 if (pin)
5408 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5409 else if (wps_method == WPS_PIN_DISPLAY) {
5410 if (wps_generate_pin((unsigned int *) &ret) < 0)
5411 return -1;
5412 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5413 "%08d", ret);
5414 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5415 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5416 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5417 wpa_s->p2p_pin);
5418 } else if (wps_method == WPS_P2PS) {
5419 /* Force the P2Ps default PIN to be used */
5420 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin));
5421 } else
5422 wpa_s->p2p_pin[0] = '\0';
5423
5424 if (join || auto_join) {
5425 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5426 if (auth) {
5427 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5428 "connect a running group from " MACSTR,
5429 MAC2STR(peer_addr));
5430 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5431 return ret;
5432 }
5433 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5434 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5435 iface_addr) < 0) {
5436 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5437 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5438 dev_addr);
5439 }
5440 if (auto_join) {
5441 os_get_reltime(&wpa_s->p2p_auto_started);
5442 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5443 "%ld.%06ld",
5444 wpa_s->p2p_auto_started.sec,
5445 wpa_s->p2p_auto_started.usec);
5446 }
5447 wpa_s->user_initiated_pd = 1;
5448 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5449 auto_join, freq,
5450 group_ssid, group_ssid_len) < 0)
5451 return -1;
5452 return ret;
5453 }
5454
5455 size = P2P_MAX_PREF_CHANNELS;
5456 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5457 go_intent == 15, pref_freq_list, &size);
5458 if (res)
5459 return res;
5460 wpas_p2p_set_own_freq_preference(wpa_s,
5461 force_freq ? force_freq : pref_freq);
5462
5463 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5464
5465 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5466
5467 if (wpa_s->create_p2p_iface) {
5468 /* Prepare to add a new interface for the group */
5469 iftype = WPA_IF_P2P_GROUP;
5470 if (go_intent == 15)
5471 iftype = WPA_IF_P2P_GO;
5472 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5473 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5474 "interface for the group");
5475 return -1;
5476 }
5477
5478 if_addr = wpa_s->pending_interface_addr;
5479 } else {
5480 if (wpa_s->p2p_mgmt)
5481 if_addr = wpa_s->parent->own_addr;
5482 else
5483 if_addr = wpa_s->own_addr;
5484 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5485 }
5486
5487 if (auth) {
5488 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5489 go_intent, if_addr,
5490 force_freq, persistent_group, ssid,
5491 pref_freq) < 0)
5492 return -1;
5493 return ret;
5494 }
5495
5496 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5497 go_intent, if_addr, force_freq,
5498 persistent_group, ssid, pref_freq) < 0) {
5499 if (wpa_s->create_p2p_iface)
5500 wpas_p2p_remove_pending_group_interface(wpa_s);
5501 return -1;
5502 }
5503 return ret;
5504 }
5505
5506
5507 /**
5508 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5509 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5510 * @freq: Frequency of the channel in MHz
5511 * @duration: Duration of the stay on the channel in milliseconds
5512 *
5513 * This callback is called when the driver indicates that it has started the
5514 * requested remain-on-channel duration.
5515 */
5516 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5517 unsigned int freq, unsigned int duration)
5518 {
5519 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5520 return;
5521 wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
5522 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5523 wpa_s->roc_waiting_drv_freq, freq, duration);
5524 if (wpa_s->off_channel_freq &&
5525 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5526 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5527 wpa_s->pending_listen_duration);
5528 wpa_s->pending_listen_freq = 0;
5529 } else {
5530 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5531 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5532 freq, duration);
5533 }
5534 }
5535
5536
5537 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5538 {
5539 /* Limit maximum Listen state time based on driver limitation. */
5540 if (timeout > wpa_s->max_remain_on_chan)
5541 timeout = wpa_s->max_remain_on_chan;
5542
5543 return p2p_listen(wpa_s->global->p2p, timeout);
5544 }
5545
5546
5547 /**
5548 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5549 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5550 * @freq: Frequency of the channel in MHz
5551 *
5552 * This callback is called when the driver indicates that a remain-on-channel
5553 * operation has been completed, i.e., the duration on the requested channel
5554 * has timed out.
5555 */
5556 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5557 unsigned int freq)
5558 {
5559 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5560 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5561 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5562 wpas_p2p_listen_work_done(wpa_s);
5563 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5564 return;
5565 if (wpa_s->p2p_long_listen > 0)
5566 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5567 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5568 return; /* P2P module started a new operation */
5569 if (offchannel_pending_action_tx(wpa_s))
5570 return;
5571 if (wpa_s->p2p_long_listen > 0) {
5572 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5573 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5574 } else {
5575 /*
5576 * When listen duration is over, stop listen & update p2p_state
5577 * to IDLE.
5578 */
5579 p2p_stop_listen(wpa_s->global->p2p);
5580 }
5581 }
5582
5583
5584 /**
5585 * wpas_p2p_group_remove - Remove a P2P group
5586 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5587 * @ifname: Network interface name of the group interface or "*" to remove all
5588 * groups
5589 * Returns: 0 on success, -1 on failure
5590 *
5591 * This function is used to remove a P2P group. This can be used to disconnect
5592 * from a group in which the local end is a P2P Client or to end a P2P Group in
5593 * case the local end is the Group Owner. If a virtual network interface was
5594 * created for this group, that interface will be removed. Otherwise, only the
5595 * configured P2P group network will be removed from the interface.
5596 */
5597 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5598 {
5599 struct wpa_global *global = wpa_s->global;
5600 struct wpa_supplicant *calling_wpa_s = wpa_s;
5601
5602 if (os_strcmp(ifname, "*") == 0) {
5603 struct wpa_supplicant *prev;
5604 wpa_s = global->ifaces;
5605 while (wpa_s) {
5606 prev = wpa_s;
5607 wpa_s = wpa_s->next;
5608 if (prev->p2p_group_interface !=
5609 NOT_P2P_GROUP_INTERFACE ||
5610 (prev->current_ssid &&
5611 prev->current_ssid->p2p_group))
5612 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5613 }
5614 return 0;
5615 }
5616
5617 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5618 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5619 break;
5620 }
5621
5622 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5623 }
5624
5625
5626 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5627 {
5628 unsigned int r;
5629
5630 if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5631 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5632 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5633 int res;
5634
5635 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5636 &size, pref_freq_list);
5637 if (!res && size > 0) {
5638 i = 0;
5639 while (i < size &&
5640 (!p2p_supported_freq(wpa_s->global->p2p,
5641 pref_freq_list[i]) ||
5642 wpas_p2p_disallowed_freq(wpa_s->global,
5643 pref_freq_list[i]))) {
5644 wpa_printf(MSG_DEBUG,
5645 "P2P: preferred_freq_list[%d]=%d is disallowed",
5646 i, pref_freq_list[i]);
5647 i++;
5648 }
5649 if (i != size) {
5650 freq = pref_freq_list[i];
5651 wpa_printf(MSG_DEBUG,
5652 "P2P: Using preferred_freq_list[%d]=%d",
5653 i, freq);
5654 } else {
5655 wpa_printf(MSG_DEBUG,
5656 "P2P: All driver preferred frequencies are disallowed for P2P use");
5657 }
5658 } else {
5659 wpa_printf(MSG_DEBUG,
5660 "P2P: No preferred frequency list available");
5661 }
5662 }
5663
5664 if (freq == 2) {
5665 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5666 "band");
5667 if (wpa_s->best_24_freq > 0 &&
5668 p2p_supported_freq_go(wpa_s->global->p2p,
5669 wpa_s->best_24_freq)) {
5670 freq = wpa_s->best_24_freq;
5671 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5672 "channel: %d MHz", freq);
5673 } else {
5674 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5675 return -1;
5676 freq = 2412 + (r % 3) * 25;
5677 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5678 "channel: %d MHz", freq);
5679 }
5680 }
5681
5682 if (freq == 5) {
5683 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5684 "band");
5685 if (wpa_s->best_5_freq > 0 &&
5686 p2p_supported_freq_go(wpa_s->global->p2p,
5687 wpa_s->best_5_freq)) {
5688 freq = wpa_s->best_5_freq;
5689 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5690 "channel: %d MHz", freq);
5691 } else {
5692 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5693 return -1;
5694 freq = 5180 + (r % 4) * 20;
5695 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5696 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5697 "5 GHz channel for P2P group");
5698 return -1;
5699 }
5700 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5701 "channel: %d MHz", freq);
5702 }
5703 }
5704
5705 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5706 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5707 ieee80211_is_dfs(freq, wpa_s->hw.modes,
5708 wpa_s->hw.num_modes)) {
5709 /*
5710 * If freq is a DFS channel and DFS is offloaded to the
5711 * driver, allow P2P GO to use it.
5712 */
5713 wpa_printf(MSG_DEBUG, "P2P: "
5714 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5715 __func__, freq);
5716 return freq;
5717 }
5718 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5719 "(%u MHz) is not supported for P2P uses",
5720 freq);
5721 return -1;
5722 }
5723
5724 return freq;
5725 }
5726
5727
5728 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5729 const struct p2p_channels *channels,
5730 int freq)
5731 {
5732 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5733 p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5734 freq_included(wpa_s, channels, freq))
5735 return 1;
5736 return 0;
5737 }
5738
5739
5740 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5741 struct p2p_go_neg_results *params,
5742 const struct p2p_channels *channels)
5743 {
5744 unsigned int i, r;
5745
5746 /* try all channels in operating class 115 */
5747 for (i = 0; i < 4; i++) {
5748 params->freq = 5180 + i * 20;
5749 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5750 freq_included(wpa_s, channels, params->freq) &&
5751 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5752 goto out;
5753 }
5754
5755 /* try all channels in operating class 124 */
5756 for (i = 0; i < 4; i++) {
5757 params->freq = 5745 + i * 20;
5758 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5759 freq_included(wpa_s, channels, params->freq) &&
5760 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5761 goto out;
5762 }
5763
5764 /* try social channel class 180 channel 2 */
5765 params->freq = 58320 + 1 * 2160;
5766 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5767 freq_included(wpa_s, channels, params->freq) &&
5768 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5769 goto out;
5770
5771 /* try all channels in reg. class 180 */
5772 for (i = 0; i < 4; i++) {
5773 params->freq = 58320 + i * 2160;
5774 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5775 freq_included(wpa_s, channels, params->freq) &&
5776 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5777 goto out;
5778 }
5779
5780 /* try some random selection of the social channels */
5781 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5782 return;
5783
5784 for (i = 0; i < 3; i++) {
5785 params->freq = 2412 + ((r + i) % 3) * 25;
5786 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5787 goto out;
5788 }
5789
5790 /* try all other channels in operating class 81 */
5791 for (i = 0; i < 11; i++) {
5792 params->freq = 2412 + i * 5;
5793
5794 /* skip social channels; covered in the previous loop */
5795 if (params->freq == 2412 ||
5796 params->freq == 2437 ||
5797 params->freq == 2462)
5798 continue;
5799
5800 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5801 goto out;
5802 }
5803
5804 params->freq = 0;
5805 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5806 return;
5807 out:
5808 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5809 params->freq);
5810 }
5811
5812
5813 static int wpas_same_band(int freq1, int freq2)
5814 {
5815 enum hostapd_hw_mode mode1, mode2;
5816 u8 chan1, chan2;
5817
5818 mode1 = ieee80211_freq_to_chan(freq1, &chan1);
5819 mode2 = ieee80211_freq_to_chan(freq2, &chan2);
5820 if (mode1 == NUM_HOSTAPD_MODES)
5821 return 0;
5822 return mode1 == mode2;
5823 }
5824
5825
5826 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5827 struct p2p_go_neg_results *params,
5828 int freq, int vht_center_freq2, int ht40,
5829 int vht, int max_oper_chwidth,
5830 const struct p2p_channels *channels)
5831 {
5832 struct wpa_used_freq_data *freqs;
5833 unsigned int cand;
5834 unsigned int num, i;
5835 int ignore_no_freqs = 0;
5836 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5837
5838 os_memset(params, 0, sizeof(*params));
5839 params->role_go = 1;
5840 params->ht40 = ht40;
5841 params->vht = vht;
5842 params->max_oper_chwidth = max_oper_chwidth;
5843 params->vht_center_freq2 = vht_center_freq2;
5844
5845 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5846 sizeof(struct wpa_used_freq_data));
5847 if (!freqs)
5848 return -1;
5849
5850 num = get_shared_radio_freqs_data(wpa_s, freqs,
5851 wpa_s->num_multichan_concurrent);
5852
5853 if (wpa_s->current_ssid &&
5854 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5855 wpa_s->wpa_state == WPA_COMPLETED) {
5856 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5857 __func__);
5858
5859 /*
5860 * If the frequency selection is done for an active P2P GO that
5861 * is not sharing a frequency, allow to select a new frequency
5862 * even if there are no unused frequencies as we are about to
5863 * move the P2P GO so its frequency can be re-used.
5864 */
5865 for (i = 0; i < num; i++) {
5866 if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5867 freqs[i].flags == 0) {
5868 ignore_no_freqs = 1;
5869 break;
5870 }
5871 }
5872 }
5873
5874 /* try using the forced freq */
5875 if (freq) {
5876 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) ||
5877 !freq_included(wpa_s, channels, freq)) {
5878 wpa_printf(MSG_DEBUG,
5879 "P2P: Forced GO freq %d MHz disallowed",
5880 freq);
5881 goto fail;
5882 }
5883 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5884 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5885 ieee80211_is_dfs(freq, wpa_s->hw.modes,
5886 wpa_s->hw.num_modes)) {
5887 /*
5888 * If freq is a DFS channel and DFS is offloaded
5889 * to the driver, allow P2P GO to use it.
5890 */
5891 wpa_printf(MSG_DEBUG,
5892 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded",
5893 __func__, freq);
5894 } else {
5895 wpa_printf(MSG_DEBUG,
5896 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses",
5897 freq);
5898 goto fail;
5899 }
5900 }
5901
5902 for (i = 0; i < num; i++) {
5903 if (freqs[i].freq == freq) {
5904 wpa_printf(MSG_DEBUG,
5905 "P2P: forced freq (%d MHz) is also shared",
5906 freq);
5907 params->freq = freq;
5908 goto success;
5909 }
5910 }
5911
5912 if (!ignore_no_freqs && !unused_channels) {
5913 wpa_printf(MSG_DEBUG,
5914 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5915 freq);
5916 goto fail;
5917 }
5918
5919 wpa_printf(MSG_DEBUG,
5920 "P2P: force GO freq (%d MHz) on a free channel",
5921 freq);
5922 params->freq = freq;
5923 goto success;
5924 }
5925
5926 /* consider using one of the shared frequencies */
5927 if (num &&
5928 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5929 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5930 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5931 wpa_printf(MSG_DEBUG,
5932 "P2P: Use shared freq (%d MHz) for GO",
5933 cand);
5934 params->freq = cand;
5935 goto success;
5936 }
5937
5938 /* try using one of the shared freqs */
5939 for (i = 0; i < num; i++) {
5940 if (wpas_p2p_supported_freq_go(wpa_s, channels,
5941 freqs[i].freq)) {
5942 wpa_printf(MSG_DEBUG,
5943 "P2P: Use shared freq (%d MHz) for GO",
5944 freqs[i].freq);
5945 params->freq = freqs[i].freq;
5946 goto success;
5947 }
5948 }
5949 }
5950
5951 if (!ignore_no_freqs && !unused_channels) {
5952 wpa_printf(MSG_DEBUG,
5953 "P2P: Cannot force GO on any of the channels we are already using");
5954 goto fail;
5955 }
5956
5957 /* try using the setting from the configuration file */
5958 if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5959 wpa_s->conf->p2p_oper_channel >= 1 &&
5960 wpa_s->conf->p2p_oper_channel <= 11 &&
5961 wpas_p2p_supported_freq_go(
5962 wpa_s, channels,
5963 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5964 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5965 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5966 "frequency %d MHz", params->freq);
5967 goto success;
5968 }
5969
5970 if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5971 wpa_s->conf->p2p_oper_reg_class == 116 ||
5972 wpa_s->conf->p2p_oper_reg_class == 117 ||
5973 wpa_s->conf->p2p_oper_reg_class == 124 ||
5974 wpa_s->conf->p2p_oper_reg_class == 125 ||
5975 wpa_s->conf->p2p_oper_reg_class == 126 ||
5976 wpa_s->conf->p2p_oper_reg_class == 127) &&
5977 wpas_p2p_supported_freq_go(wpa_s, channels,
5978 5000 +
5979 5 * wpa_s->conf->p2p_oper_channel)) {
5980 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5981 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5982 "frequency %d MHz", params->freq);
5983 goto success;
5984 }
5985
5986 /* Try using best channels */
5987 if (wpa_s->conf->p2p_oper_channel == 0 &&
5988 wpa_s->best_overall_freq > 0 &&
5989 wpas_p2p_supported_freq_go(wpa_s, channels,
5990 wpa_s->best_overall_freq)) {
5991 params->freq = wpa_s->best_overall_freq;
5992 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5993 "channel %d MHz", params->freq);
5994 goto success;
5995 }
5996
5997 if (wpa_s->conf->p2p_oper_channel == 0 &&
5998 wpa_s->best_24_freq > 0 &&
5999 wpas_p2p_supported_freq_go(wpa_s, channels,
6000 wpa_s->best_24_freq)) {
6001 params->freq = wpa_s->best_24_freq;
6002 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
6003 "channel %d MHz", params->freq);
6004 goto success;
6005 }
6006
6007 if (wpa_s->conf->p2p_oper_channel == 0 &&
6008 wpa_s->best_5_freq > 0 &&
6009 wpas_p2p_supported_freq_go(wpa_s, channels,
6010 wpa_s->best_5_freq)) {
6011 params->freq = wpa_s->best_5_freq;
6012 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
6013 "channel %d MHz", params->freq);
6014 goto success;
6015 }
6016
6017 /* try using preferred channels */
6018 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
6019 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6020 params->freq = cand;
6021 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6022 "channels", params->freq);
6023 goto success;
6024 }
6025
6026 /* Try using a channel that allows VHT to be used with 80 MHz */
6027 if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) {
6028 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6029 enum hostapd_hw_mode mode;
6030 struct hostapd_hw_modes *hwmode;
6031 u8 chan;
6032
6033 cand = wpa_s->p2p_group_common_freqs[i];
6034 mode = ieee80211_freq_to_chan(cand, &chan);
6035 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6036 mode);
6037 if (!hwmode ||
6038 wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6039 BW80) != ALLOWED)
6040 continue;
6041 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6042 params->freq = cand;
6043 wpa_printf(MSG_DEBUG,
6044 "P2P: Use freq %d MHz common with the peer and allowing VHT80",
6045 params->freq);
6046 goto success;
6047 }
6048 }
6049 }
6050
6051 /* Try using a channel that allows HT to be used with 40 MHz on the same
6052 * band so that CSA can be used */
6053 if (wpa_s->current_ssid && wpa_s->hw.modes &&
6054 wpa_s->p2p_group_common_freqs) {
6055 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6056 enum hostapd_hw_mode mode;
6057 struct hostapd_hw_modes *hwmode;
6058 u8 chan;
6059
6060 cand = wpa_s->p2p_group_common_freqs[i];
6061 mode = ieee80211_freq_to_chan(cand, &chan);
6062 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6063 mode);
6064 if (!wpas_same_band(wpa_s->current_ssid->frequency,
6065 cand) ||
6066 !hwmode ||
6067 (wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6068 BW40MINUS) != ALLOWED &&
6069 wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6070 BW40PLUS) != ALLOWED))
6071 continue;
6072 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6073 params->freq = cand;
6074 wpa_printf(MSG_DEBUG,
6075 "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band",
6076 params->freq);
6077 goto success;
6078 }
6079 }
6080 }
6081
6082 /* Try using one of the group common freqs on the same band so that CSA
6083 * can be used */
6084 if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) {
6085 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6086 cand = wpa_s->p2p_group_common_freqs[i];
6087 if (!wpas_same_band(wpa_s->current_ssid->frequency,
6088 cand))
6089 continue;
6090 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6091 params->freq = cand;
6092 wpa_printf(MSG_DEBUG,
6093 "P2P: Use freq %d MHz common with the peer and maintaining same band",
6094 params->freq);
6095 goto success;
6096 }
6097 }
6098 }
6099
6100 /* Try using one of the group common freqs */
6101 if (wpa_s->p2p_group_common_freqs) {
6102 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6103 cand = wpa_s->p2p_group_common_freqs[i];
6104 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6105 params->freq = cand;
6106 wpa_printf(MSG_DEBUG,
6107 "P2P: Use freq %d MHz common with the peer",
6108 params->freq);
6109 goto success;
6110 }
6111 }
6112 }
6113
6114 /* no preference, select some channel */
6115 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
6116
6117 if (params->freq == 0) {
6118 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
6119 goto fail;
6120 }
6121
6122 success:
6123 os_free(freqs);
6124 return 0;
6125 fail:
6126 os_free(freqs);
6127 return -1;
6128 }
6129
6130
6131 static struct wpa_supplicant *
6132 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6133 int go)
6134 {
6135 struct wpa_supplicant *group_wpa_s;
6136
6137 if (!wpas_p2p_create_iface(wpa_s)) {
6138 if (wpa_s->p2p_mgmt) {
6139 /*
6140 * We may be called on the p2p_dev interface which
6141 * cannot be used for group operations, so always use
6142 * the primary interface.
6143 */
6144 wpa_s->parent->p2pdev = wpa_s;
6145 wpa_s = wpa_s->parent;
6146 }
6147 wpa_dbg(wpa_s, MSG_DEBUG,
6148 "P2P: Use primary interface for group operations");
6149 wpa_s->p2p_first_connection_timeout = 0;
6150 if (wpa_s != wpa_s->p2pdev)
6151 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6152 return wpa_s;
6153 }
6154
6155 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6156 WPA_IF_P2P_CLIENT) < 0) {
6157 wpa_msg_global(wpa_s, MSG_ERROR,
6158 "P2P: Failed to add group interface");
6159 return NULL;
6160 }
6161 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6162 if (group_wpa_s == NULL) {
6163 wpa_msg_global(wpa_s, MSG_ERROR,
6164 "P2P: Failed to initialize group interface");
6165 wpas_p2p_remove_pending_group_interface(wpa_s);
6166 return NULL;
6167 }
6168
6169 if (go && wpa_s->p2p_go_do_acs) {
6170 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs;
6171 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band;
6172 wpa_s->p2p_go_do_acs = 0;
6173 }
6174
6175 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6176 group_wpa_s->ifname);
6177 group_wpa_s->p2p_first_connection_timeout = 0;
6178 return group_wpa_s;
6179 }
6180
6181
6182 /**
6183 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6184 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6185 * @persistent_group: Whether to create a persistent group
6186 * @freq: Frequency for the group or 0 to indicate no hardcoding
6187 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6188 * @ht40: Start GO with 40 MHz channel width
6189 * @vht: Start GO with VHT support
6190 * @vht_chwidth: channel bandwidth for GO operating with VHT support
6191 * Returns: 0 on success, -1 on failure
6192 *
6193 * This function creates a new P2P group with the local end as the Group Owner,
6194 * i.e., without using Group Owner Negotiation.
6195 */
6196 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6197 int freq, int vht_center_freq2, int ht40, int vht,
6198 int max_oper_chwidth)
6199 {
6200 struct p2p_go_neg_results params;
6201
6202 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6203 return -1;
6204
6205 os_free(wpa_s->global->add_psk);
6206 wpa_s->global->add_psk = NULL;
6207
6208 /* Make sure we are not running find during connection establishment */
6209 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6210 wpas_p2p_stop_find_oper(wpa_s);
6211
6212 if (!wpa_s->p2p_go_do_acs) {
6213 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6214 if (freq < 0)
6215 return -1;
6216 }
6217
6218 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6219 ht40, vht, max_oper_chwidth, NULL))
6220 return -1;
6221
6222 p2p_go_params(wpa_s->global->p2p, &params);
6223 params.persistent_group = persistent_group;
6224
6225 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6226 if (wpa_s == NULL)
6227 return -1;
6228 wpas_start_wps_go(wpa_s, &params, 0);
6229
6230 return 0;
6231 }
6232
6233
6234 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6235 struct wpa_ssid *params, int addr_allocated,
6236 int freq, int force_scan)
6237 {
6238 struct wpa_ssid *ssid;
6239
6240 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6241 if (wpa_s == NULL)
6242 return -1;
6243 if (force_scan)
6244 os_get_reltime(&wpa_s->scan_min_time);
6245 wpa_s->p2p_last_4way_hs_fail = NULL;
6246
6247 wpa_supplicant_ap_deinit(wpa_s);
6248
6249 ssid = wpa_config_add_network(wpa_s->conf);
6250 if (ssid == NULL)
6251 return -1;
6252 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6253 wpa_config_set_network_defaults(ssid);
6254 ssid->temporary = 1;
6255 ssid->proto = WPA_PROTO_RSN;
6256 ssid->pbss = params->pbss;
6257 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6258 WPA_CIPHER_CCMP;
6259 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6260 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6261 ssid->ssid = os_malloc(params->ssid_len);
6262 if (ssid->ssid == NULL) {
6263 wpa_config_remove_network(wpa_s->conf, ssid->id);
6264 return -1;
6265 }
6266 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6267 ssid->ssid_len = params->ssid_len;
6268 ssid->p2p_group = 1;
6269 ssid->export_keys = 1;
6270 if (params->psk_set) {
6271 os_memcpy(ssid->psk, params->psk, 32);
6272 ssid->psk_set = 1;
6273 }
6274 if (params->passphrase)
6275 ssid->passphrase = os_strdup(params->passphrase);
6276
6277 wpa_s->show_group_started = 1;
6278 wpa_s->p2p_in_invitation = 1;
6279 wpa_s->p2p_invite_go_freq = freq;
6280 wpa_s->p2p_go_group_formation_completed = 0;
6281 wpa_s->global->p2p_group_formation = wpa_s;
6282
6283 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6284 NULL);
6285 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6286 wpas_p2p_group_formation_timeout,
6287 wpa_s->p2pdev, NULL);
6288 wpa_supplicant_select_network(wpa_s, ssid);
6289
6290 return 0;
6291 }
6292
6293
6294 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6295 struct wpa_ssid *ssid, int addr_allocated,
6296 int force_freq, int neg_freq,
6297 int vht_center_freq2, int ht40,
6298 int vht, int max_oper_chwidth,
6299 const struct p2p_channels *channels,
6300 int connection_timeout, int force_scan)
6301 {
6302 struct p2p_go_neg_results params;
6303 int go = 0, freq;
6304
6305 if (ssid->disabled != 2 || ssid->ssid == NULL)
6306 return -1;
6307
6308 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6309 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6310 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6311 "already running");
6312 if (go == 0 &&
6313 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6314 wpa_s->p2pdev, NULL)) {
6315 /*
6316 * This can happen if Invitation Response frame was lost
6317 * and the peer (GO of a persistent group) tries to
6318 * invite us again. Reschedule the timeout to avoid
6319 * terminating the wait for the connection too early
6320 * since we now know that the peer is still trying to
6321 * invite us instead of having already started the GO.
6322 */
6323 wpa_printf(MSG_DEBUG,
6324 "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6325 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6326 wpas_p2p_group_formation_timeout,
6327 wpa_s->p2pdev, NULL);
6328 }
6329 return 0;
6330 }
6331
6332 os_free(wpa_s->global->add_psk);
6333 wpa_s->global->add_psk = NULL;
6334
6335 /* Make sure we are not running find during connection establishment */
6336 wpas_p2p_stop_find_oper(wpa_s);
6337
6338 wpa_s->p2p_fallback_to_go_neg = 0;
6339
6340 if (ssid->mode == WPAS_MODE_P2P_GO) {
6341 if (force_freq > 0) {
6342 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6343 if (freq < 0)
6344 return -1;
6345 } else {
6346 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6347 if (freq < 0 ||
6348 (freq > 0 && !freq_included(wpa_s, channels, freq)))
6349 freq = 0;
6350 }
6351 } else if (ssid->mode == WPAS_MODE_INFRA) {
6352 freq = neg_freq;
6353 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6354 struct os_reltime now;
6355 struct wpa_bss *bss =
6356 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6357
6358 os_get_reltime(&now);
6359 if (bss &&
6360 !os_reltime_expired(&now, &bss->last_update, 5) &&
6361 freq_included(wpa_s, channels, bss->freq))
6362 freq = bss->freq;
6363 else
6364 freq = 0;
6365 }
6366
6367 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6368 force_scan);
6369 } else {
6370 return -1;
6371 }
6372
6373 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6374 ht40, vht, max_oper_chwidth, channels))
6375 return -1;
6376
6377 params.role_go = 1;
6378 params.psk_set = ssid->psk_set;
6379 if (params.psk_set)
6380 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6381 if (ssid->passphrase) {
6382 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6383 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6384 "persistent group");
6385 return -1;
6386 }
6387 os_strlcpy(params.passphrase, ssid->passphrase,
6388 sizeof(params.passphrase));
6389 }
6390 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6391 params.ssid_len = ssid->ssid_len;
6392 params.persistent_group = 1;
6393
6394 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6395 if (wpa_s == NULL)
6396 return -1;
6397
6398 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6399
6400 wpa_s->p2p_first_connection_timeout = connection_timeout;
6401 wpas_start_wps_go(wpa_s, &params, 0);
6402
6403 return 0;
6404 }
6405
6406
6407 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6408 struct wpabuf *proberesp_ies)
6409 {
6410 struct wpa_supplicant *wpa_s = ctx;
6411 if (wpa_s->ap_iface) {
6412 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6413 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6414 wpabuf_free(beacon_ies);
6415 wpabuf_free(proberesp_ies);
6416 return;
6417 }
6418 if (beacon_ies) {
6419 wpabuf_free(hapd->p2p_beacon_ie);
6420 hapd->p2p_beacon_ie = beacon_ies;
6421 }
6422 wpabuf_free(hapd->p2p_probe_resp_ie);
6423 hapd->p2p_probe_resp_ie = proberesp_ies;
6424 } else {
6425 wpabuf_free(beacon_ies);
6426 wpabuf_free(proberesp_ies);
6427 }
6428 wpa_supplicant_ap_update_beacon(wpa_s);
6429 }
6430
6431
6432 static void wpas_p2p_idle_update(void *ctx, int idle)
6433 {
6434 struct wpa_supplicant *wpa_s = ctx;
6435 if (!wpa_s->ap_iface)
6436 return;
6437 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6438 if (idle) {
6439 if (wpa_s->global->p2p_fail_on_wps_complete &&
6440 wpa_s->p2p_in_provisioning) {
6441 wpas_p2p_grpform_fail_after_wps(wpa_s);
6442 return;
6443 }
6444 wpas_p2p_set_group_idle_timeout(wpa_s);
6445 } else
6446 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6447 }
6448
6449
6450 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6451 struct wpa_ssid *ssid)
6452 {
6453 struct p2p_group *group;
6454 struct p2p_group_config *cfg;
6455
6456 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6457 !ssid->p2p_group)
6458 return NULL;
6459
6460 cfg = os_zalloc(sizeof(*cfg));
6461 if (cfg == NULL)
6462 return NULL;
6463
6464 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6465 cfg->persistent_group = 2;
6466 else if (ssid->p2p_persistent_group)
6467 cfg->persistent_group = 1;
6468 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6469 if (wpa_s->max_stations &&
6470 wpa_s->max_stations < wpa_s->conf->max_num_sta)
6471 cfg->max_clients = wpa_s->max_stations;
6472 else
6473 cfg->max_clients = wpa_s->conf->max_num_sta;
6474 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6475 cfg->ssid_len = ssid->ssid_len;
6476 cfg->freq = ssid->frequency;
6477 cfg->cb_ctx = wpa_s;
6478 cfg->ie_update = wpas_p2p_ie_update;
6479 cfg->idle_update = wpas_p2p_idle_update;
6480 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6481 != 0;
6482
6483 group = p2p_group_init(wpa_s->global->p2p, cfg);
6484 if (group == NULL)
6485 os_free(cfg);
6486 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6487 p2p_group_notif_formation_done(group);
6488 wpa_s->p2p_group = group;
6489 return group;
6490 }
6491
6492
6493 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6494 int registrar)
6495 {
6496 struct wpa_ssid *ssid = wpa_s->current_ssid;
6497
6498 if (!wpa_s->p2p_in_provisioning) {
6499 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6500 "provisioning not in progress");
6501 return;
6502 }
6503
6504 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6505 u8 go_dev_addr[ETH_ALEN];
6506 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6507 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6508 ssid->ssid_len);
6509 /* Clear any stored provisioning info */
6510 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6511 }
6512
6513 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6514 NULL);
6515 wpa_s->p2p_go_group_formation_completed = 1;
6516 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6517 /*
6518 * Use a separate timeout for initial data connection to
6519 * complete to allow the group to be removed automatically if
6520 * something goes wrong in this step before the P2P group idle
6521 * timeout mechanism is taken into use.
6522 */
6523 wpa_dbg(wpa_s, MSG_DEBUG,
6524 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6525 P2P_MAX_INITIAL_CONN_WAIT);
6526 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6527 wpas_p2p_group_formation_timeout,
6528 wpa_s->p2pdev, NULL);
6529 /* Complete group formation on successful data connection. */
6530 wpa_s->p2p_go_group_formation_completed = 0;
6531 } else if (ssid) {
6532 /*
6533 * Use a separate timeout for initial data connection to
6534 * complete to allow the group to be removed automatically if
6535 * the client does not complete data connection successfully.
6536 */
6537 wpa_dbg(wpa_s, MSG_DEBUG,
6538 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6539 P2P_MAX_INITIAL_CONN_WAIT_GO);
6540 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6541 wpas_p2p_group_formation_timeout,
6542 wpa_s->p2pdev, NULL);
6543 /*
6544 * Complete group formation on first successful data connection
6545 */
6546 wpa_s->p2p_go_group_formation_completed = 0;
6547 }
6548 if (wpa_s->global->p2p)
6549 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6550 wpas_group_formation_completed(wpa_s, 1, 0);
6551 }
6552
6553
6554 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6555 struct wps_event_fail *fail)
6556 {
6557 if (!wpa_s->p2p_in_provisioning) {
6558 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6559 "provisioning not in progress");
6560 return;
6561 }
6562
6563 if (wpa_s->go_params) {
6564 p2p_clear_provisioning_info(
6565 wpa_s->global->p2p,
6566 wpa_s->go_params->peer_device_addr);
6567 }
6568
6569 wpas_notify_p2p_wps_failed(wpa_s, fail);
6570
6571 if (wpa_s == wpa_s->global->p2p_group_formation) {
6572 /*
6573 * Allow some time for the failed WPS negotiation exchange to
6574 * complete, but remove the group since group formation cannot
6575 * succeed after provisioning failure.
6576 */
6577 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6578 wpa_s->global->p2p_fail_on_wps_complete = 1;
6579 eloop_deplete_timeout(0, 50000,
6580 wpas_p2p_group_formation_timeout,
6581 wpa_s->p2pdev, NULL);
6582 }
6583 }
6584
6585
6586 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6587 {
6588 if (!wpa_s->global->p2p_fail_on_wps_complete ||
6589 !wpa_s->p2p_in_provisioning)
6590 return 0;
6591
6592 wpas_p2p_grpform_fail_after_wps(wpa_s);
6593
6594 return 1;
6595 }
6596
6597
6598 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6599 const char *config_method,
6600 enum wpas_p2p_prov_disc_use use,
6601 struct p2ps_provision *p2ps_prov)
6602 {
6603 u16 config_methods;
6604
6605 wpa_s->global->pending_p2ps_group = 0;
6606 wpa_s->global->pending_p2ps_group_freq = 0;
6607 wpa_s->p2p_fallback_to_go_neg = 0;
6608 wpa_s->pending_pd_use = NORMAL_PD;
6609 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6610 p2ps_prov->conncap = p2ps_group_capability(
6611 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6612 &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6613
6614 wpa_printf(MSG_DEBUG,
6615 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6616 __func__, p2ps_prov->conncap,
6617 p2ps_prov->adv_id, p2ps_prov->conncap,
6618 p2ps_prov->status, p2ps_prov->info);
6619
6620 config_methods = 0;
6621 } else if (os_strncmp(config_method, "display", 7) == 0)
6622 config_methods = WPS_CONFIG_DISPLAY;
6623 else if (os_strncmp(config_method, "keypad", 6) == 0)
6624 config_methods = WPS_CONFIG_KEYPAD;
6625 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6626 os_strncmp(config_method, "pushbutton", 10) == 0)
6627 config_methods = WPS_CONFIG_PUSHBUTTON;
6628 else {
6629 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6630 os_free(p2ps_prov);
6631 return -1;
6632 }
6633
6634 if (use == WPAS_P2P_PD_AUTO) {
6635 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6636 wpa_s->pending_pd_config_methods = config_methods;
6637 wpa_s->p2p_auto_pd = 1;
6638 wpa_s->p2p_auto_join = 0;
6639 wpa_s->pending_pd_before_join = 0;
6640 wpa_s->auto_pd_scan_retry = 0;
6641 wpas_p2p_stop_find(wpa_s);
6642 wpa_s->p2p_join_scan_count = 0;
6643 os_get_reltime(&wpa_s->p2p_auto_started);
6644 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6645 wpa_s->p2p_auto_started.sec,
6646 wpa_s->p2p_auto_started.usec);
6647 wpas_p2p_join_scan(wpa_s, NULL);
6648 return 0;
6649 }
6650
6651 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6652 os_free(p2ps_prov);
6653 return -1;
6654 }
6655
6656 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6657 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6658 0, 1);
6659 }
6660
6661
6662 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6663 char *end)
6664 {
6665 return p2p_scan_result_text(ies, ies_len, buf, end);
6666 }
6667
6668
6669 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6670 {
6671 if (!offchannel_pending_action_tx(wpa_s))
6672 return;
6673
6674 if (wpa_s->p2p_send_action_work) {
6675 wpas_p2p_free_send_action_work(wpa_s);
6676 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6677 wpa_s, NULL);
6678 offchannel_send_action_done(wpa_s);
6679 }
6680
6681 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6682 "operation request");
6683 offchannel_clear_pending_action_tx(wpa_s);
6684 }
6685
6686
6687 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6688 enum p2p_discovery_type type,
6689 unsigned int num_req_dev_types, const u8 *req_dev_types,
6690 const u8 *dev_id, unsigned int search_delay,
6691 u8 seek_cnt, const char **seek_string, int freq)
6692 {
6693 wpas_p2p_clear_pending_action_tx(wpa_s);
6694 wpa_s->p2p_long_listen = 0;
6695
6696 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6697 wpa_s->p2p_in_provisioning) {
6698 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s",
6699 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ?
6700 " (P2P disabled)" : "",
6701 wpa_s->p2p_in_provisioning ?
6702 " (p2p_in_provisioning)" : "");
6703 return -1;
6704 }
6705
6706 wpa_supplicant_cancel_sched_scan(wpa_s);
6707
6708 return p2p_find(wpa_s->global->p2p, timeout, type,
6709 num_req_dev_types, req_dev_types, dev_id,
6710 search_delay, seek_cnt, seek_string, freq);
6711 }
6712
6713
6714 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6715 struct wpa_scan_results *scan_res)
6716 {
6717 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6718
6719 if (wpa_s->p2p_scan_work) {
6720 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6721 wpa_s->p2p_scan_work = NULL;
6722 radio_work_done(work);
6723 }
6724
6725 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6726 return;
6727
6728 /*
6729 * Indicate that results have been processed so that the P2P module can
6730 * continue pending tasks.
6731 */
6732 p2p_scan_res_handled(wpa_s->global->p2p);
6733 }
6734
6735
6736 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6737 {
6738 wpas_p2p_clear_pending_action_tx(wpa_s);
6739 wpa_s->p2p_long_listen = 0;
6740 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6741 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6742
6743 if (wpa_s->global->p2p)
6744 p2p_stop_find(wpa_s->global->p2p);
6745
6746 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6747 wpa_printf(MSG_DEBUG,
6748 "P2P: Do not consider the scan results after stop_find");
6749 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6750 }
6751 }
6752
6753
6754 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6755 {
6756 wpas_p2p_stop_find_oper(wpa_s);
6757 if (!wpa_s->global->pending_group_iface_for_p2ps)
6758 wpas_p2p_remove_pending_group_interface(wpa_s);
6759 }
6760
6761
6762 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6763 {
6764 struct wpa_supplicant *wpa_s = eloop_ctx;
6765 wpa_s->p2p_long_listen = 0;
6766 }
6767
6768
6769 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6770 {
6771 int res;
6772
6773 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6774 return -1;
6775
6776 if (wpa_s->p2p_lo_started) {
6777 wpa_printf(MSG_DEBUG,
6778 "P2P: Cannot start P2P listen, it is offloaded");
6779 return -1;
6780 }
6781
6782 wpa_supplicant_cancel_sched_scan(wpa_s);
6783 wpas_p2p_clear_pending_action_tx(wpa_s);
6784
6785 if (timeout == 0) {
6786 /*
6787 * This is a request for unlimited Listen state. However, at
6788 * least for now, this is mapped to a Listen state for one
6789 * hour.
6790 */
6791 timeout = 3600;
6792 }
6793 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6794 wpa_s->p2p_long_listen = 0;
6795
6796 /*
6797 * Stop previous find/listen operation to avoid trying to request a new
6798 * remain-on-channel operation while the driver is still running the
6799 * previous one.
6800 */
6801 if (wpa_s->global->p2p)
6802 p2p_stop_find(wpa_s->global->p2p);
6803
6804 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6805 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6806 wpa_s->p2p_long_listen = timeout * 1000;
6807 eloop_register_timeout(timeout, 0,
6808 wpas_p2p_long_listen_timeout,
6809 wpa_s, NULL);
6810 }
6811
6812 return res;
6813 }
6814
6815
6816 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6817 u8 *buf, size_t len, int p2p_group)
6818 {
6819 struct wpabuf *p2p_ie;
6820 int ret;
6821
6822 if (wpa_s->global->p2p_disabled)
6823 return -1;
6824 /*
6825 * Advertize mandatory cross connection capability even on
6826 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6827 */
6828 if (wpa_s->conf->p2p_disabled && p2p_group)
6829 return -1;
6830 if (wpa_s->global->p2p == NULL)
6831 return -1;
6832 if (bss == NULL)
6833 return -1;
6834
6835 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6836 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6837 p2p_group, p2p_ie);
6838 wpabuf_free(p2p_ie);
6839
6840 return ret;
6841 }
6842
6843
6844 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6845 const u8 *dst, const u8 *bssid,
6846 const u8 *ie, size_t ie_len,
6847 unsigned int rx_freq, int ssi_signal)
6848 {
6849 if (wpa_s->global->p2p_disabled)
6850 return 0;
6851 if (wpa_s->global->p2p == NULL)
6852 return 0;
6853
6854 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6855 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6856 case P2P_PREQ_NOT_P2P:
6857 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6858 ssi_signal);
6859 /* fall through */
6860 case P2P_PREQ_MALFORMED:
6861 case P2P_PREQ_NOT_LISTEN:
6862 case P2P_PREQ_NOT_PROCESSED:
6863 default: /* make gcc happy */
6864 return 0;
6865 case P2P_PREQ_PROCESSED:
6866 return 1;
6867 }
6868 }
6869
6870
6871 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6872 const u8 *sa, const u8 *bssid,
6873 u8 category, const u8 *data, size_t len, int freq)
6874 {
6875 if (wpa_s->global->p2p_disabled)
6876 return;
6877 if (wpa_s->global->p2p == NULL)
6878 return;
6879
6880 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6881 freq);
6882 }
6883
6884
6885 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6886 {
6887 unsigned int bands;
6888
6889 if (wpa_s->global->p2p_disabled)
6890 return;
6891 if (wpa_s->global->p2p == NULL)
6892 return;
6893
6894 bands = wpas_get_bands(wpa_s, NULL);
6895 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6896 }
6897
6898
6899 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6900 {
6901 p2p_group_deinit(wpa_s->p2p_group);
6902 wpa_s->p2p_group = NULL;
6903
6904 wpa_s->ap_configured_cb = NULL;
6905 wpa_s->ap_configured_cb_ctx = NULL;
6906 wpa_s->ap_configured_cb_data = NULL;
6907 wpa_s->connect_without_scan = NULL;
6908 }
6909
6910
6911 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6912 {
6913 wpa_s->p2p_long_listen = 0;
6914
6915 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6916 return -1;
6917
6918 return p2p_reject(wpa_s->global->p2p, addr);
6919 }
6920
6921
6922 /* Invite to reinvoke a persistent group */
6923 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6924 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6925 int vht_center_freq2, int ht40, int vht, int max_chwidth,
6926 int pref_freq)
6927 {
6928 enum p2p_invite_role role;
6929 u8 *bssid = NULL;
6930 int force_freq = 0;
6931 int res;
6932 int no_pref_freq_given = pref_freq == 0;
6933 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6934
6935 wpa_s->global->p2p_invite_group = NULL;
6936 if (peer_addr)
6937 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6938 else
6939 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6940
6941 wpa_s->p2p_persistent_go_freq = freq;
6942 wpa_s->p2p_go_ht40 = !!ht40;
6943 wpa_s->p2p_go_vht = !!vht;
6944 wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6945 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6946 if (ssid->mode == WPAS_MODE_P2P_GO) {
6947 role = P2P_INVITE_ROLE_GO;
6948 if (peer_addr == NULL) {
6949 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6950 "address in invitation command");
6951 return -1;
6952 }
6953 if (wpas_p2p_create_iface(wpa_s)) {
6954 if (wpas_p2p_add_group_interface(wpa_s,
6955 WPA_IF_P2P_GO) < 0) {
6956 wpa_printf(MSG_ERROR, "P2P: Failed to "
6957 "allocate a new interface for the "
6958 "group");
6959 return -1;
6960 }
6961 bssid = wpa_s->pending_interface_addr;
6962 } else if (wpa_s->p2p_mgmt)
6963 bssid = wpa_s->parent->own_addr;
6964 else
6965 bssid = wpa_s->own_addr;
6966 } else {
6967 role = P2P_INVITE_ROLE_CLIENT;
6968 peer_addr = ssid->bssid;
6969 }
6970 wpa_s->pending_invite_ssid_id = ssid->id;
6971
6972 size = P2P_MAX_PREF_CHANNELS;
6973 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6974 role == P2P_INVITE_ROLE_GO,
6975 pref_freq_list, &size);
6976 if (res)
6977 return res;
6978
6979 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6980 return -1;
6981
6982 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6983
6984 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6985 no_pref_freq_given && pref_freq > 0 &&
6986 wpa_s->num_multichan_concurrent > 1 &&
6987 wpas_p2p_num_unused_channels(wpa_s) > 0) {
6988 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6989 pref_freq);
6990 pref_freq = 0;
6991 }
6992
6993 /*
6994 * Stop any find/listen operations before invitation and possibly
6995 * connection establishment.
6996 */
6997 wpas_p2p_stop_find_oper(wpa_s);
6998
6999 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7000 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
7001 1, pref_freq, -1);
7002 }
7003
7004
7005 /* Invite to join an active group */
7006 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
7007 const u8 *peer_addr, const u8 *go_dev_addr)
7008 {
7009 struct wpa_global *global = wpa_s->global;
7010 enum p2p_invite_role role;
7011 u8 *bssid = NULL;
7012 struct wpa_ssid *ssid;
7013 int persistent;
7014 int freq = 0, force_freq = 0, pref_freq = 0;
7015 int res;
7016 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7017
7018 wpa_s->p2p_persistent_go_freq = 0;
7019 wpa_s->p2p_go_ht40 = 0;
7020 wpa_s->p2p_go_vht = 0;
7021 wpa_s->p2p_go_vht_center_freq2 = 0;
7022 wpa_s->p2p_go_max_oper_chwidth = 0;
7023
7024 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7025 if (os_strcmp(wpa_s->ifname, ifname) == 0)
7026 break;
7027 }
7028 if (wpa_s == NULL) {
7029 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
7030 return -1;
7031 }
7032
7033 ssid = wpa_s->current_ssid;
7034 if (ssid == NULL) {
7035 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
7036 "invitation");
7037 return -1;
7038 }
7039
7040 wpa_s->global->p2p_invite_group = wpa_s;
7041 persistent = ssid->p2p_persistent_group &&
7042 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
7043 ssid->ssid, ssid->ssid_len);
7044
7045 if (ssid->mode == WPAS_MODE_P2P_GO) {
7046 role = P2P_INVITE_ROLE_ACTIVE_GO;
7047 bssid = wpa_s->own_addr;
7048 if (go_dev_addr == NULL)
7049 go_dev_addr = wpa_s->global->p2p_dev_addr;
7050 freq = ssid->frequency;
7051 } else {
7052 role = P2P_INVITE_ROLE_CLIENT;
7053 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
7054 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
7055 "invite to current group");
7056 return -1;
7057 }
7058 bssid = wpa_s->bssid;
7059 if (go_dev_addr == NULL &&
7060 !is_zero_ether_addr(wpa_s->go_dev_addr))
7061 go_dev_addr = wpa_s->go_dev_addr;
7062 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7063 (int) wpa_s->assoc_freq;
7064 }
7065 wpa_s->p2pdev->pending_invite_ssid_id = -1;
7066
7067 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7068 return -1;
7069
7070 size = P2P_MAX_PREF_CHANNELS;
7071 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7072 role == P2P_INVITE_ROLE_ACTIVE_GO,
7073 pref_freq_list, &size);
7074 if (res)
7075 return res;
7076 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
7077
7078 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7079 ssid->ssid, ssid->ssid_len, force_freq,
7080 go_dev_addr, persistent, pref_freq, -1);
7081 }
7082
7083
7084 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
7085 {
7086 struct wpa_ssid *ssid = wpa_s->current_ssid;
7087 u8 go_dev_addr[ETH_ALEN];
7088 int persistent;
7089 int freq;
7090 u8 ip[3 * 4];
7091 char ip_addr[100];
7092
7093 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
7094 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7095 wpa_s->p2pdev, NULL);
7096 }
7097
7098 if (!wpa_s->show_group_started || !ssid)
7099 return;
7100
7101 wpa_s->show_group_started = 0;
7102 if (!wpa_s->p2p_go_group_formation_completed &&
7103 wpa_s->global->p2p_group_formation == wpa_s) {
7104 wpa_dbg(wpa_s, MSG_DEBUG,
7105 "P2P: Marking group formation completed on client on data connection");
7106 wpa_s->p2p_go_group_formation_completed = 1;
7107 wpa_s->global->p2p_group_formation = NULL;
7108 wpa_s->p2p_in_provisioning = 0;
7109 wpa_s->p2p_in_invitation = 0;
7110 }
7111
7112 os_memset(go_dev_addr, 0, ETH_ALEN);
7113 if (ssid->bssid_set)
7114 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7115 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7116 ssid->ssid_len);
7117 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7118
7119 if (wpa_s->global->p2p_group_formation == wpa_s)
7120 wpa_s->global->p2p_group_formation = NULL;
7121
7122 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7123 (int) wpa_s->assoc_freq;
7124
7125 ip_addr[0] = '\0';
7126 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7127 int res;
7128
7129 res = os_snprintf(ip_addr, sizeof(ip_addr),
7130 " ip_addr=%u.%u.%u.%u "
7131 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7132 ip[0], ip[1], ip[2], ip[3],
7133 ip[4], ip[5], ip[6], ip[7],
7134 ip[8], ip[9], ip[10], ip[11]);
7135 if (os_snprintf_error(sizeof(ip_addr), res))
7136 ip_addr[0] = '\0';
7137 }
7138
7139 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7140 ssid->passphrase == NULL && ssid->psk_set ?
7141 ssid->psk : NULL,
7142 ssid->passphrase, go_dev_addr, persistent,
7143 ip_addr);
7144
7145 if (persistent)
7146 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7147 ssid, go_dev_addr);
7148
7149 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip);
7150 }
7151
7152
7153 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7154 u32 interval1, u32 duration2, u32 interval2)
7155 {
7156 int ret;
7157
7158 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7159 return -1;
7160
7161 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7162 wpa_s->current_ssid == NULL ||
7163 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7164 return -1;
7165
7166 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7167 wpa_s->own_addr, wpa_s->assoc_freq,
7168 duration1, interval1, duration2, interval2);
7169 if (ret == 0)
7170 wpa_s->waiting_presence_resp = 1;
7171
7172 return ret;
7173 }
7174
7175
7176 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7177 unsigned int interval)
7178 {
7179 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7180 return -1;
7181
7182 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7183 }
7184
7185
7186 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7187 {
7188 if (wpa_s->current_ssid == NULL) {
7189 /*
7190 * current_ssid can be cleared when P2P client interface gets
7191 * disconnected, so assume this interface was used as P2P
7192 * client.
7193 */
7194 return 1;
7195 }
7196 return wpa_s->current_ssid->p2p_group &&
7197 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7198 }
7199
7200
7201 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7202 {
7203 struct wpa_supplicant *wpa_s = eloop_ctx;
7204
7205 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7206 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7207 "disabled");
7208 return;
7209 }
7210
7211 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7212 "group");
7213 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7214 }
7215
7216
7217 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7218 {
7219 int timeout;
7220
7221 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7222 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7223
7224 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7225 return;
7226
7227 timeout = wpa_s->conf->p2p_group_idle;
7228 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7229 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7230 timeout = P2P_MAX_CLIENT_IDLE;
7231
7232 if (timeout == 0)
7233 return;
7234
7235 if (timeout < 0) {
7236 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7237 timeout = 0; /* special client mode no-timeout */
7238 else
7239 return;
7240 }
7241
7242 if (wpa_s->p2p_in_provisioning) {
7243 /*
7244 * Use the normal group formation timeout during the
7245 * provisioning phase to avoid terminating this process too
7246 * early due to group idle timeout.
7247 */
7248 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7249 "during provisioning");
7250 return;
7251 }
7252
7253 if (wpa_s->show_group_started) {
7254 /*
7255 * Use the normal group formation timeout between the end of
7256 * the provisioning phase and completion of 4-way handshake to
7257 * avoid terminating this process too early due to group idle
7258 * timeout.
7259 */
7260 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7261 "while waiting for initial 4-way handshake to "
7262 "complete");
7263 return;
7264 }
7265
7266 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7267 timeout);
7268 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7269 wpa_s, NULL);
7270 }
7271
7272
7273 /* Returns 1 if the interface was removed */
7274 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7275 u16 reason_code, const u8 *ie, size_t ie_len,
7276 int locally_generated)
7277 {
7278 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7279 return 0;
7280
7281 if (!locally_generated)
7282 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7283 ie_len);
7284
7285 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7286 wpa_s->current_ssid &&
7287 wpa_s->current_ssid->p2p_group &&
7288 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7289 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7290 "session is ending");
7291 if (wpas_p2p_group_delete(wpa_s,
7292 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7293 > 0)
7294 return 1;
7295 }
7296
7297 return 0;
7298 }
7299
7300
7301 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7302 u16 reason_code, const u8 *ie, size_t ie_len,
7303 int locally_generated)
7304 {
7305 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7306 return;
7307
7308 if (!locally_generated)
7309 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7310 ie_len);
7311 }
7312
7313
7314 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7315 {
7316 struct p2p_data *p2p = wpa_s->global->p2p;
7317
7318 if (p2p == NULL)
7319 return;
7320
7321 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7322 return;
7323
7324 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7325 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7326
7327 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7328 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7329
7330 if (wpa_s->wps &&
7331 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7332 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7333
7334 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7335 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7336
7337 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7338 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7339 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7340 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7341 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7342 }
7343
7344 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7345 p2p_set_sec_dev_types(p2p,
7346 (void *) wpa_s->conf->sec_device_type,
7347 wpa_s->conf->num_sec_device_types);
7348
7349 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7350 int i;
7351 p2p_remove_wps_vendor_extensions(p2p);
7352 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7353 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7354 continue;
7355 p2p_add_wps_vendor_extension(
7356 p2p, wpa_s->conf->wps_vendor_ext[i]);
7357 }
7358 }
7359
7360 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7361 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7362 char country[3];
7363 country[0] = wpa_s->conf->country[0];
7364 country[1] = wpa_s->conf->country[1];
7365 country[2] = 0x04;
7366 p2p_set_country(p2p, country);
7367 }
7368
7369 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7370 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7371 wpa_s->conf->p2p_ssid_postfix ?
7372 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7373 0);
7374 }
7375
7376 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7377 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7378
7379 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7380 u8 reg_class, channel;
7381 int ret;
7382 unsigned int r;
7383 u8 channel_forced;
7384
7385 if (wpa_s->conf->p2p_listen_reg_class &&
7386 wpa_s->conf->p2p_listen_channel) {
7387 reg_class = wpa_s->conf->p2p_listen_reg_class;
7388 channel = wpa_s->conf->p2p_listen_channel;
7389 channel_forced = 1;
7390 } else {
7391 reg_class = 81;
7392 /*
7393 * Pick one of the social channels randomly as the
7394 * listen channel.
7395 */
7396 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7397 channel = 1;
7398 else
7399 channel = 1 + (r % 3) * 5;
7400 channel_forced = 0;
7401 }
7402 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7403 channel_forced);
7404 if (ret)
7405 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7406 "failed: %d", ret);
7407 }
7408 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7409 u8 op_reg_class, op_channel, cfg_op_channel;
7410 int ret = 0;
7411 unsigned int r;
7412 if (wpa_s->conf->p2p_oper_reg_class &&
7413 wpa_s->conf->p2p_oper_channel) {
7414 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7415 op_channel = wpa_s->conf->p2p_oper_channel;
7416 cfg_op_channel = 1;
7417 } else {
7418 op_reg_class = 81;
7419 /*
7420 * Use random operation channel from (1, 6, 11)
7421 *if no other preference is indicated.
7422 */
7423 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7424 op_channel = 1;
7425 else
7426 op_channel = 1 + (r % 3) * 5;
7427 cfg_op_channel = 0;
7428 }
7429 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7430 cfg_op_channel);
7431 if (ret)
7432 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7433 "failed: %d", ret);
7434 }
7435
7436 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7437 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7438 wpa_s->conf->p2p_pref_chan) < 0) {
7439 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7440 "update failed");
7441 }
7442
7443 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7444 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7445 "update failed");
7446 }
7447 }
7448
7449 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7450 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7451 }
7452
7453
7454 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7455 int duration)
7456 {
7457 if (!wpa_s->ap_iface)
7458 return -1;
7459 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7460 duration);
7461 }
7462
7463
7464 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7465 {
7466 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7467 return -1;
7468
7469 wpa_s->global->cross_connection = enabled;
7470 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7471
7472 if (!enabled) {
7473 struct wpa_supplicant *iface;
7474
7475 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7476 {
7477 if (iface->cross_connect_enabled == 0)
7478 continue;
7479
7480 iface->cross_connect_enabled = 0;
7481 iface->cross_connect_in_use = 0;
7482 wpa_msg_global(iface->p2pdev, MSG_INFO,
7483 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7484 iface->ifname,
7485 iface->cross_connect_uplink);
7486 }
7487 }
7488
7489 return 0;
7490 }
7491
7492
7493 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7494 {
7495 struct wpa_supplicant *iface;
7496
7497 if (!uplink->global->cross_connection)
7498 return;
7499
7500 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7501 if (!iface->cross_connect_enabled)
7502 continue;
7503 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7504 0)
7505 continue;
7506 if (iface->ap_iface == NULL)
7507 continue;
7508 if (iface->cross_connect_in_use)
7509 continue;
7510
7511 iface->cross_connect_in_use = 1;
7512 wpa_msg_global(iface->p2pdev, MSG_INFO,
7513 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7514 iface->ifname, iface->cross_connect_uplink);
7515 }
7516 }
7517
7518
7519 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7520 {
7521 struct wpa_supplicant *iface;
7522
7523 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7524 if (!iface->cross_connect_enabled)
7525 continue;
7526 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7527 0)
7528 continue;
7529 if (!iface->cross_connect_in_use)
7530 continue;
7531
7532 wpa_msg_global(iface->p2pdev, MSG_INFO,
7533 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7534 iface->ifname, iface->cross_connect_uplink);
7535 iface->cross_connect_in_use = 0;
7536 }
7537 }
7538
7539
7540 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7541 {
7542 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7543 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7544 wpa_s->cross_connect_disallowed)
7545 wpas_p2p_disable_cross_connect(wpa_s);
7546 else
7547 wpas_p2p_enable_cross_connect(wpa_s);
7548 if (!wpa_s->ap_iface &&
7549 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7550 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7551 }
7552
7553
7554 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7555 {
7556 wpas_p2p_disable_cross_connect(wpa_s);
7557 if (!wpa_s->ap_iface &&
7558 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7559 wpa_s, NULL))
7560 wpas_p2p_set_group_idle_timeout(wpa_s);
7561 }
7562
7563
7564 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7565 {
7566 struct wpa_supplicant *iface;
7567
7568 if (!wpa_s->global->cross_connection)
7569 return;
7570
7571 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7572 if (iface == wpa_s)
7573 continue;
7574 if (iface->drv_flags &
7575 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7576 continue;
7577 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7578 iface != wpa_s->parent)
7579 continue;
7580
7581 wpa_s->cross_connect_enabled = 1;
7582 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7583 sizeof(wpa_s->cross_connect_uplink));
7584 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7585 "%s to %s whenever uplink is available",
7586 wpa_s->ifname, wpa_s->cross_connect_uplink);
7587
7588 if (iface->ap_iface || iface->current_ssid == NULL ||
7589 iface->current_ssid->mode != WPAS_MODE_INFRA ||
7590 iface->cross_connect_disallowed ||
7591 iface->wpa_state != WPA_COMPLETED)
7592 break;
7593
7594 wpa_s->cross_connect_in_use = 1;
7595 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7596 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7597 wpa_s->ifname, wpa_s->cross_connect_uplink);
7598 break;
7599 }
7600 }
7601
7602
7603 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7604 {
7605 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7606 !wpa_s->p2p_in_provisioning)
7607 return 0; /* not P2P client operation */
7608
7609 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7610 "session overlap");
7611 if (wpa_s != wpa_s->p2pdev)
7612 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7613 wpas_p2p_group_formation_failed(wpa_s, 0);
7614 return 1;
7615 }
7616
7617
7618 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7619 {
7620 struct wpa_supplicant *wpa_s = eloop_ctx;
7621 wpas_p2p_notif_pbc_overlap(wpa_s);
7622 }
7623
7624
7625 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7626 enum wpas_p2p_channel_update_trig trig)
7627 {
7628 struct p2p_channels chan, cli_chan;
7629 struct wpa_used_freq_data *freqs = NULL;
7630 unsigned int num = wpa_s->num_multichan_concurrent;
7631
7632 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7633 return;
7634
7635 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7636 if (!freqs)
7637 return;
7638
7639 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7640
7641 os_memset(&chan, 0, sizeof(chan));
7642 os_memset(&cli_chan, 0, sizeof(cli_chan));
7643 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7644 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7645 "channel list");
7646 return;
7647 }
7648
7649 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7650
7651 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7652
7653 /*
7654 * The used frequencies map changed, so it is possible that a GO is
7655 * using a channel that is no longer valid for P2P use. It is also
7656 * possible that due to policy consideration, it would be preferable to
7657 * move it to a frequency already used by other station interfaces.
7658 */
7659 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7660
7661 os_free(freqs);
7662 }
7663
7664
7665 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7666 struct wpa_scan_results *scan_res)
7667 {
7668 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7669 }
7670
7671
7672 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7673 {
7674 struct wpa_global *global = wpa_s->global;
7675 int found = 0;
7676 const u8 *peer;
7677
7678 if (global->p2p == NULL)
7679 return -1;
7680
7681 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7682
7683 if (wpa_s->pending_interface_name[0] &&
7684 !is_zero_ether_addr(wpa_s->pending_interface_addr))
7685 found = 1;
7686
7687 peer = p2p_get_go_neg_peer(global->p2p);
7688 if (peer) {
7689 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7690 MACSTR, MAC2STR(peer));
7691 p2p_unauthorize(global->p2p, peer);
7692 found = 1;
7693 }
7694
7695 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7696 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7697 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7698 found = 1;
7699 }
7700
7701 if (wpa_s->pending_pd_before_join) {
7702 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7703 wpa_s->pending_pd_before_join = 0;
7704 found = 1;
7705 }
7706
7707 wpas_p2p_stop_find(wpa_s);
7708
7709 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7710 if (wpa_s == global->p2p_group_formation &&
7711 (wpa_s->p2p_in_provisioning ||
7712 wpa_s->parent->pending_interface_type ==
7713 WPA_IF_P2P_CLIENT)) {
7714 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7715 "formation found - cancelling",
7716 wpa_s->ifname);
7717 found = 1;
7718 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7719 wpa_s->p2pdev, NULL);
7720 if (wpa_s->p2p_in_provisioning) {
7721 wpas_group_formation_completed(wpa_s, 0, 0);
7722 break;
7723 }
7724 wpas_p2p_group_delete(wpa_s,
7725 P2P_GROUP_REMOVAL_REQUESTED);
7726 break;
7727 } else if (wpa_s->p2p_in_invitation) {
7728 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7729 wpa_s->ifname);
7730 found = 1;
7731 wpas_p2p_group_formation_failed(wpa_s, 0);
7732 break;
7733 }
7734 }
7735
7736 if (!found) {
7737 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7738 return -1;
7739 }
7740
7741 return 0;
7742 }
7743
7744
7745 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7746 {
7747 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7748 return;
7749
7750 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7751 "being available anymore");
7752 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7753 }
7754
7755
7756 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7757 int freq_24, int freq_5, int freq_overall)
7758 {
7759 struct p2p_data *p2p = wpa_s->global->p2p;
7760 if (p2p == NULL)
7761 return;
7762 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7763 }
7764
7765
7766 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7767 {
7768 u8 peer[ETH_ALEN];
7769 struct p2p_data *p2p = wpa_s->global->p2p;
7770
7771 if (p2p == NULL)
7772 return -1;
7773
7774 if (hwaddr_aton(addr, peer))
7775 return -1;
7776
7777 return p2p_unauthorize(p2p, peer);
7778 }
7779
7780
7781 /**
7782 * wpas_p2p_disconnect - Disconnect from a P2P Group
7783 * @wpa_s: Pointer to wpa_supplicant data
7784 * Returns: 0 on success, -1 on failure
7785 *
7786 * This can be used to disconnect from a group in which the local end is a P2P
7787 * Client or to end a P2P Group in case the local end is the Group Owner. If a
7788 * virtual network interface was created for this group, that interface will be
7789 * removed. Otherwise, only the configured P2P group network will be removed
7790 * from the interface.
7791 */
7792 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7793 {
7794
7795 if (wpa_s == NULL)
7796 return -1;
7797
7798 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7799 -1 : 0;
7800 }
7801
7802
7803 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7804 {
7805 int ret;
7806
7807 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7808 return 0;
7809
7810 ret = p2p_in_progress(wpa_s->global->p2p);
7811 if (ret == 0) {
7812 /*
7813 * Check whether there is an ongoing WPS provisioning step (or
7814 * other parts of group formation) on another interface since
7815 * p2p_in_progress() does not report this to avoid issues for
7816 * scans during such provisioning step.
7817 */
7818 if (wpa_s->global->p2p_group_formation &&
7819 wpa_s->global->p2p_group_formation != wpa_s) {
7820 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7821 "in group formation",
7822 wpa_s->global->p2p_group_formation->ifname);
7823 ret = 1;
7824 }
7825 }
7826
7827 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7828 struct os_reltime now;
7829 os_get_reltime(&now);
7830 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7831 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7832 /* Wait for the first client has expired */
7833 wpa_s->global->p2p_go_wait_client.sec = 0;
7834 } else {
7835 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7836 ret = 1;
7837 }
7838 }
7839
7840 return ret;
7841 }
7842
7843
7844 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7845 struct wpa_ssid *ssid)
7846 {
7847 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7848 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7849 wpa_s->p2pdev, NULL) > 0) {
7850 /**
7851 * Remove the network by scheduling the group formation
7852 * timeout to happen immediately. The teardown code
7853 * needs to be scheduled to run asynch later so that we
7854 * don't delete data from under ourselves unexpectedly.
7855 * Calling wpas_p2p_group_formation_timeout directly
7856 * causes a series of crashes in WPS failure scenarios.
7857 */
7858 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7859 "P2P group network getting removed");
7860 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7861 wpa_s->p2pdev, NULL);
7862 }
7863 }
7864
7865
7866 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7867 const u8 *addr, const u8 *ssid,
7868 size_t ssid_len)
7869 {
7870 struct wpa_ssid *s;
7871 size_t i;
7872
7873 for (s = wpa_s->conf->ssid; s; s = s->next) {
7874 if (s->disabled != 2)
7875 continue;
7876 if (ssid &&
7877 (ssid_len != s->ssid_len ||
7878 os_memcmp(ssid, s->ssid, ssid_len) != 0))
7879 continue;
7880 if (addr == NULL) {
7881 if (s->mode == WPAS_MODE_P2P_GO)
7882 return s;
7883 continue;
7884 }
7885 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7886 return s; /* peer is GO in the persistent group */
7887 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7888 continue;
7889 for (i = 0; i < s->num_p2p_clients; i++) {
7890 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7891 addr, ETH_ALEN) == 0)
7892 return s; /* peer is P2P client in persistent
7893 * group */
7894 }
7895 }
7896
7897 return NULL;
7898 }
7899
7900
7901 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7902 const u8 *addr)
7903 {
7904 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7905 wpa_s->p2pdev, NULL) > 0) {
7906 /*
7907 * This can happen if WPS provisioning step is not terminated
7908 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7909 * peer was able to connect, there is no need to time out group
7910 * formation after this, though. In addition, this is used with
7911 * the initial connection wait on the GO as a separate formation
7912 * timeout and as such, expected to be hit after the initial WPS
7913 * provisioning step.
7914 */
7915 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7916
7917 if (!wpa_s->p2p_go_group_formation_completed &&
7918 !wpa_s->group_formation_reported) {
7919 /*
7920 * GO has not yet notified group formation success since
7921 * the WPS step was not completed cleanly. Do that
7922 * notification now since the P2P Client was able to
7923 * connect and as such, must have received the
7924 * credential from the WPS step.
7925 */
7926 if (wpa_s->global->p2p)
7927 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7928 wpas_group_formation_completed(wpa_s, 1, 0);
7929 }
7930 }
7931 if (!wpa_s->p2p_go_group_formation_completed) {
7932 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7933 wpa_s->p2p_go_group_formation_completed = 1;
7934 wpa_s->global->p2p_group_formation = NULL;
7935 wpa_s->p2p_in_provisioning = 0;
7936 wpa_s->p2p_in_invitation = 0;
7937 }
7938 wpa_s->global->p2p_go_wait_client.sec = 0;
7939 if (addr == NULL)
7940 return;
7941 wpas_p2p_add_persistent_group_client(wpa_s, addr);
7942 }
7943
7944
7945 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7946 int group_added)
7947 {
7948 struct wpa_supplicant *group = wpa_s;
7949 int ret = 0;
7950
7951 if (wpa_s->global->p2p_group_formation)
7952 group = wpa_s->global->p2p_group_formation;
7953 wpa_s = wpa_s->global->p2p_init_wpa_s;
7954 offchannel_send_action_done(wpa_s);
7955 if (group_added)
7956 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7957 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7958 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7959 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7960 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7961 wpa_s->p2p_go_vht_center_freq2,
7962 wpa_s->p2p_persistent_id,
7963 wpa_s->p2p_pd_before_go_neg,
7964 wpa_s->p2p_go_ht40,
7965 wpa_s->p2p_go_vht,
7966 wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7967 return ret;
7968 }
7969
7970
7971 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7972 {
7973 int res;
7974
7975 if (!wpa_s->p2p_fallback_to_go_neg ||
7976 wpa_s->p2p_in_provisioning <= 5)
7977 return 0;
7978
7979 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7980 return 0; /* peer operating as a GO */
7981
7982 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7983 "fallback to GO Negotiation");
7984 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7985 "reason=GO-not-found");
7986 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7987
7988 return res == 1 ? 2 : 1;
7989 }
7990
7991
7992 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7993 {
7994 struct wpa_supplicant *ifs;
7995
7996 if (wpa_s->wpa_state > WPA_SCANNING) {
7997 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7998 "concurrent operation",
7999 wpa_s->conf->p2p_search_delay);
8000 return wpa_s->conf->p2p_search_delay;
8001 }
8002
8003 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8004 radio_list) {
8005 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
8006 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
8007 "delay due to concurrent operation on "
8008 "interface %s",
8009 wpa_s->conf->p2p_search_delay,
8010 ifs->ifname);
8011 return wpa_s->conf->p2p_search_delay;
8012 }
8013 }
8014
8015 return 0;
8016 }
8017
8018
8019 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
8020 struct wpa_ssid *s, const u8 *addr,
8021 int iface_addr)
8022 {
8023 struct psk_list_entry *psk, *tmp;
8024 int changed = 0;
8025
8026 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
8027 list) {
8028 if ((iface_addr && !psk->p2p &&
8029 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
8030 (!iface_addr && psk->p2p &&
8031 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
8032 wpa_dbg(wpa_s, MSG_DEBUG,
8033 "P2P: Remove persistent group PSK list entry for "
8034 MACSTR " p2p=%u",
8035 MAC2STR(psk->addr), psk->p2p);
8036 dl_list_del(&psk->list);
8037 os_free(psk);
8038 changed++;
8039 }
8040 }
8041
8042 return changed;
8043 }
8044
8045
8046 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
8047 const u8 *p2p_dev_addr,
8048 const u8 *psk, size_t psk_len)
8049 {
8050 struct wpa_ssid *ssid = wpa_s->current_ssid;
8051 struct wpa_ssid *persistent;
8052 struct psk_list_entry *p, *last;
8053
8054 if (psk_len != sizeof(p->psk))
8055 return;
8056
8057 if (p2p_dev_addr) {
8058 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
8059 " p2p_dev_addr=" MACSTR,
8060 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
8061 if (is_zero_ether_addr(p2p_dev_addr))
8062 p2p_dev_addr = NULL;
8063 } else {
8064 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
8065 MAC2STR(mac_addr));
8066 }
8067
8068 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
8069 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
8070 /* To be added to persistent group once created */
8071 if (wpa_s->global->add_psk == NULL) {
8072 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
8073 if (wpa_s->global->add_psk == NULL)
8074 return;
8075 }
8076 p = wpa_s->global->add_psk;
8077 if (p2p_dev_addr) {
8078 p->p2p = 1;
8079 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8080 } else {
8081 p->p2p = 0;
8082 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8083 }
8084 os_memcpy(p->psk, psk, psk_len);
8085 return;
8086 }
8087
8088 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
8089 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
8090 return;
8091 }
8092
8093 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
8094 ssid->ssid_len);
8095 if (!persistent) {
8096 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
8097 return;
8098 }
8099
8100 p = os_zalloc(sizeof(*p));
8101 if (p == NULL)
8102 return;
8103 if (p2p_dev_addr) {
8104 p->p2p = 1;
8105 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8106 } else {
8107 p->p2p = 0;
8108 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8109 }
8110 os_memcpy(p->psk, psk, psk_len);
8111
8112 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8113 (last = dl_list_last(&persistent->psk_list,
8114 struct psk_list_entry, list))) {
8115 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8116 MACSTR " (p2p=%u) to make room for a new one",
8117 MAC2STR(last->addr), last->p2p);
8118 dl_list_del(&last->list);
8119 os_free(last);
8120 }
8121
8122 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
8123 p2p_dev_addr ? p2p_dev_addr : mac_addr,
8124 p2p_dev_addr == NULL);
8125 if (p2p_dev_addr) {
8126 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8127 MACSTR, MAC2STR(p2p_dev_addr));
8128 } else {
8129 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8130 MAC2STR(mac_addr));
8131 }
8132 dl_list_add(&persistent->psk_list, &p->list);
8133
8134 if (wpa_s->p2pdev->conf->update_config &&
8135 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
8136 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8137 }
8138
8139
8140 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8141 struct wpa_ssid *s, const u8 *addr,
8142 int iface_addr)
8143 {
8144 int res;
8145
8146 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8147 if (res > 0 && wpa_s->conf->update_config &&
8148 wpa_config_write(wpa_s->confname, wpa_s->conf))
8149 wpa_dbg(wpa_s, MSG_DEBUG,
8150 "P2P: Failed to update configuration");
8151 }
8152
8153
8154 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8155 const u8 *peer, int iface_addr)
8156 {
8157 struct hostapd_data *hapd;
8158 struct hostapd_wpa_psk *psk, *prev, *rem;
8159 struct sta_info *sta;
8160
8161 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8162 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8163 return;
8164
8165 /* Remove per-station PSK entry */
8166 hapd = wpa_s->ap_iface->bss[0];
8167 prev = NULL;
8168 psk = hapd->conf->ssid.wpa_psk;
8169 while (psk) {
8170 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8171 (!iface_addr &&
8172 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8173 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8174 MACSTR " iface_addr=%d",
8175 MAC2STR(peer), iface_addr);
8176 if (prev)
8177 prev->next = psk->next;
8178 else
8179 hapd->conf->ssid.wpa_psk = psk->next;
8180 rem = psk;
8181 psk = psk->next;
8182 os_free(rem);
8183 } else {
8184 prev = psk;
8185 psk = psk->next;
8186 }
8187 }
8188
8189 /* Disconnect from group */
8190 if (iface_addr)
8191 sta = ap_get_sta(hapd, peer);
8192 else
8193 sta = ap_get_sta_p2p(hapd, peer);
8194 if (sta) {
8195 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8196 " (iface_addr=%d) from group",
8197 MAC2STR(peer), iface_addr);
8198 hostapd_drv_sta_deauth(hapd, sta->addr,
8199 WLAN_REASON_DEAUTH_LEAVING);
8200 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8201 }
8202 }
8203
8204
8205 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8206 int iface_addr)
8207 {
8208 struct wpa_ssid *s;
8209 struct wpa_supplicant *w;
8210 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8211
8212 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8213
8214 /* Remove from any persistent group */
8215 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8216 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8217 continue;
8218 if (!iface_addr)
8219 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8220 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8221 }
8222
8223 /* Remove from any operating group */
8224 for (w = wpa_s->global->ifaces; w; w = w->next)
8225 wpas_p2p_remove_client_go(w, peer, iface_addr);
8226 }
8227
8228
8229 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8230 {
8231 struct wpa_supplicant *wpa_s = eloop_ctx;
8232 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8233 }
8234
8235
8236 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8237 {
8238 struct wpa_supplicant *wpa_s = eloop_ctx;
8239
8240 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8241 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8242 }
8243
8244
8245 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8246 struct wpa_ssid *ssid)
8247 {
8248 struct wpa_supplicant *iface;
8249
8250 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8251 if (!iface->current_ssid ||
8252 iface->current_ssid->frequency == freq ||
8253 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8254 !iface->current_ssid->p2p_group))
8255 continue;
8256
8257 /* Remove the connection with least priority */
8258 if (!wpas_is_p2p_prioritized(iface)) {
8259 /* STA connection has priority over existing
8260 * P2P connection, so remove the interface. */
8261 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8262 eloop_register_timeout(0, 0,
8263 wpas_p2p_group_freq_conflict,
8264 iface, NULL);
8265 /* If connection in progress is P2P connection, do not
8266 * proceed for the connection. */
8267 if (wpa_s == iface)
8268 return -1;
8269 else
8270 return 0;
8271 } else {
8272 /* P2P connection has priority, disable the STA network
8273 */
8274 wpa_supplicant_disable_network(wpa_s->global->ifaces,
8275 ssid);
8276 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8277 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8278 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8279 ETH_ALEN);
8280 /* If P2P connection is in progress, continue
8281 * connecting...*/
8282 if (wpa_s == iface)
8283 return 0;
8284 else
8285 return -1;
8286 }
8287 }
8288
8289 return 0;
8290 }
8291
8292
8293 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8294 {
8295 struct wpa_ssid *ssid = wpa_s->current_ssid;
8296
8297 if (ssid == NULL || !ssid->p2p_group)
8298 return 0;
8299
8300 if (wpa_s->p2p_last_4way_hs_fail &&
8301 wpa_s->p2p_last_4way_hs_fail == ssid) {
8302 u8 go_dev_addr[ETH_ALEN];
8303 struct wpa_ssid *persistent;
8304
8305 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8306 ssid->ssid,
8307 ssid->ssid_len) <= 0) {
8308 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8309 goto disconnect;
8310 }
8311
8312 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8313 MACSTR, MAC2STR(go_dev_addr));
8314 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8315 ssid->ssid,
8316 ssid->ssid_len);
8317 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8318 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8319 goto disconnect;
8320 }
8321 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8322 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8323 persistent->id);
8324 disconnect:
8325 wpa_s->p2p_last_4way_hs_fail = NULL;
8326 /*
8327 * Remove the group from a timeout to avoid issues with caller
8328 * continuing to use the interface if this is on a P2P group
8329 * interface.
8330 */
8331 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8332 wpa_s, NULL);
8333 return 1;
8334 }
8335
8336 wpa_s->p2p_last_4way_hs_fail = ssid;
8337 return 0;
8338 }
8339
8340
8341 #ifdef CONFIG_WPS_NFC
8342
8343 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8344 struct wpabuf *p2p)
8345 {
8346 struct wpabuf *ret;
8347 size_t wsc_len;
8348
8349 if (p2p == NULL) {
8350 wpabuf_free(wsc);
8351 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8352 return NULL;
8353 }
8354
8355 wsc_len = wsc ? wpabuf_len(wsc) : 0;
8356 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8357 if (ret == NULL) {
8358 wpabuf_free(wsc);
8359 wpabuf_free(p2p);
8360 return NULL;
8361 }
8362
8363 wpabuf_put_be16(ret, wsc_len);
8364 if (wsc)
8365 wpabuf_put_buf(ret, wsc);
8366 wpabuf_put_be16(ret, wpabuf_len(p2p));
8367 wpabuf_put_buf(ret, p2p);
8368
8369 wpabuf_free(wsc);
8370 wpabuf_free(p2p);
8371 wpa_hexdump_buf(MSG_DEBUG,
8372 "P2P: Generated NFC connection handover message", ret);
8373
8374 if (ndef && ret) {
8375 struct wpabuf *tmp;
8376 tmp = ndef_build_p2p(ret);
8377 wpabuf_free(ret);
8378 if (tmp == NULL) {
8379 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8380 return NULL;
8381 }
8382 ret = tmp;
8383 }
8384
8385 return ret;
8386 }
8387
8388
8389 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8390 struct wpa_ssid **ssid, u8 *go_dev_addr)
8391 {
8392 struct wpa_supplicant *iface;
8393
8394 if (go_dev_addr)
8395 os_memset(go_dev_addr, 0, ETH_ALEN);
8396 if (ssid)
8397 *ssid = NULL;
8398 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8399 if (iface->wpa_state < WPA_ASSOCIATING ||
8400 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8401 !iface->current_ssid->p2p_group ||
8402 iface->current_ssid->mode != WPAS_MODE_INFRA)
8403 continue;
8404 if (ssid)
8405 *ssid = iface->current_ssid;
8406 if (go_dev_addr)
8407 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8408 return iface->assoc_freq;
8409 }
8410 return 0;
8411 }
8412
8413
8414 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8415 int ndef)
8416 {
8417 struct wpabuf *wsc, *p2p;
8418 struct wpa_ssid *ssid;
8419 u8 go_dev_addr[ETH_ALEN];
8420 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8421
8422 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8423 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8424 return NULL;
8425 }
8426
8427 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8428 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8429 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8430 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8431 return NULL;
8432 }
8433
8434 if (cli_freq == 0) {
8435 wsc = wps_build_nfc_handover_req_p2p(
8436 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8437 } else
8438 wsc = NULL;
8439 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8440 go_dev_addr, ssid ? ssid->ssid : NULL,
8441 ssid ? ssid->ssid_len : 0);
8442
8443 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8444 }
8445
8446
8447 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8448 int ndef, int tag)
8449 {
8450 struct wpabuf *wsc, *p2p;
8451 struct wpa_ssid *ssid;
8452 u8 go_dev_addr[ETH_ALEN];
8453 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8454
8455 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8456 return NULL;
8457
8458 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8459 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8460 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8461 return NULL;
8462
8463 if (cli_freq == 0) {
8464 wsc = wps_build_nfc_handover_sel_p2p(
8465 wpa_s->parent->wps,
8466 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8467 DEV_PW_NFC_CONNECTION_HANDOVER,
8468 wpa_s->conf->wps_nfc_dh_pubkey,
8469 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8470 } else
8471 wsc = NULL;
8472 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8473 go_dev_addr, ssid ? ssid->ssid : NULL,
8474 ssid ? ssid->ssid_len : 0);
8475
8476 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8477 }
8478
8479
8480 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8481 struct p2p_nfc_params *params)
8482 {
8483 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8484 "connection handover (freq=%d)",
8485 params->go_freq);
8486
8487 if (params->go_freq && params->go_ssid_len) {
8488 wpa_s->p2p_wps_method = WPS_NFC;
8489 wpa_s->pending_join_wps_method = WPS_NFC;
8490 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8491 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8492 ETH_ALEN);
8493 return wpas_p2p_join_start(wpa_s, params->go_freq,
8494 params->go_ssid,
8495 params->go_ssid_len);
8496 }
8497
8498 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8499 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8500 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8501 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8502 params->go_ssid_len ? params->go_ssid : NULL,
8503 params->go_ssid_len);
8504 }
8505
8506
8507 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8508 struct p2p_nfc_params *params, int tag)
8509 {
8510 int res, persistent;
8511 struct wpa_ssid *ssid;
8512
8513 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8514 "connection handover");
8515 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8516 ssid = wpa_s->current_ssid;
8517 if (ssid == NULL)
8518 continue;
8519 if (ssid->mode != WPAS_MODE_P2P_GO)
8520 continue;
8521 if (wpa_s->ap_iface == NULL)
8522 continue;
8523 break;
8524 }
8525 if (wpa_s == NULL) {
8526 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8527 return -1;
8528 }
8529
8530 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8531 DEV_PW_NFC_CONNECTION_HANDOVER &&
8532 !wpa_s->p2pdev->p2p_oob_dev_pw) {
8533 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8534 return -1;
8535 }
8536 res = wpas_ap_wps_add_nfc_pw(
8537 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8538 wpa_s->p2pdev->p2p_oob_dev_pw,
8539 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8540 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8541 if (res)
8542 return res;
8543
8544 if (!tag) {
8545 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8546 return 0;
8547 }
8548
8549 if (!params->peer ||
8550 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8551 return 0;
8552
8553 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8554 " to join", MAC2STR(params->peer->p2p_device_addr));
8555
8556 wpa_s->global->p2p_invite_group = wpa_s;
8557 persistent = ssid->p2p_persistent_group &&
8558 wpas_p2p_get_persistent(wpa_s->p2pdev,
8559 params->peer->p2p_device_addr,
8560 ssid->ssid, ssid->ssid_len);
8561 wpa_s->p2pdev->pending_invite_ssid_id = -1;
8562
8563 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8564 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8565 ssid->ssid, ssid->ssid_len, ssid->frequency,
8566 wpa_s->global->p2p_dev_addr, persistent, 0,
8567 wpa_s->p2pdev->p2p_oob_dev_pw_id);
8568 }
8569
8570
8571 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8572 struct p2p_nfc_params *params,
8573 int forced_freq)
8574 {
8575 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8576 "connection handover");
8577 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8578 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8579 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8580 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8581 NULL, 0);
8582 }
8583
8584
8585 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8586 struct p2p_nfc_params *params,
8587 int forced_freq)
8588 {
8589 int res;
8590
8591 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8592 "connection handover");
8593 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8594 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8595 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8596 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8597 NULL, 0);
8598 if (res)
8599 return res;
8600
8601 res = wpas_p2p_listen(wpa_s, 60);
8602 if (res) {
8603 p2p_unauthorize(wpa_s->global->p2p,
8604 params->peer->p2p_device_addr);
8605 }
8606
8607 return res;
8608 }
8609
8610
8611 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8612 const struct wpabuf *data,
8613 int sel, int tag, int forced_freq)
8614 {
8615 const u8 *pos, *end;
8616 u16 len, id;
8617 struct p2p_nfc_params params;
8618 int res;
8619
8620 os_memset(&params, 0, sizeof(params));
8621 params.sel = sel;
8622
8623 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8624
8625 pos = wpabuf_head(data);
8626 end = pos + wpabuf_len(data);
8627
8628 if (end - pos < 2) {
8629 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8630 "attributes");
8631 return -1;
8632 }
8633 len = WPA_GET_BE16(pos);
8634 pos += 2;
8635 if (len > end - pos) {
8636 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8637 "attributes");
8638 return -1;
8639 }
8640 params.wsc_attr = pos;
8641 params.wsc_len = len;
8642 pos += len;
8643
8644 if (end - pos < 2) {
8645 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8646 "attributes");
8647 return -1;
8648 }
8649 len = WPA_GET_BE16(pos);
8650 pos += 2;
8651 if (len > end - pos) {
8652 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8653 "attributes");
8654 return -1;
8655 }
8656 params.p2p_attr = pos;
8657 params.p2p_len = len;
8658 pos += len;
8659
8660 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8661 params.wsc_attr, params.wsc_len);
8662 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8663 params.p2p_attr, params.p2p_len);
8664 if (pos < end) {
8665 wpa_hexdump(MSG_DEBUG,
8666 "P2P: Ignored extra data after P2P attributes",
8667 pos, end - pos);
8668 }
8669
8670 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8671 if (res)
8672 return res;
8673
8674 if (params.next_step == NO_ACTION)
8675 return 0;
8676
8677 if (params.next_step == BOTH_GO) {
8678 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8679 MAC2STR(params.peer->p2p_device_addr));
8680 return 0;
8681 }
8682
8683 if (params.next_step == PEER_CLIENT) {
8684 if (!is_zero_ether_addr(params.go_dev_addr)) {
8685 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8686 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8687 " ssid=\"%s\"",
8688 MAC2STR(params.peer->p2p_device_addr),
8689 params.go_freq,
8690 MAC2STR(params.go_dev_addr),
8691 wpa_ssid_txt(params.go_ssid,
8692 params.go_ssid_len));
8693 } else {
8694 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8695 "peer=" MACSTR " freq=%d",
8696 MAC2STR(params.peer->p2p_device_addr),
8697 params.go_freq);
8698 }
8699 return 0;
8700 }
8701
8702 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8703 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8704 MACSTR, MAC2STR(params.peer->p2p_device_addr));
8705 return 0;
8706 }
8707
8708 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8709 wpa_s->p2p_oob_dev_pw = NULL;
8710
8711 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8712 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8713 "received");
8714 return -1;
8715 }
8716
8717 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8718 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8719 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8720 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8721 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8722 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8723 wpa_s->p2p_peer_oob_pk_hash_known = 1;
8724
8725 if (tag) {
8726 if (id < 0x10) {
8727 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8728 "peer OOB Device Password Id %u", id);
8729 return -1;
8730 }
8731 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8732 "Device Password Id %u", id);
8733 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8734 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8735 params.oob_dev_pw_len -
8736 WPS_OOB_PUBKEY_HASH_LEN - 2);
8737 wpa_s->p2p_oob_dev_pw_id = id;
8738 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8739 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8740 params.oob_dev_pw_len -
8741 WPS_OOB_PUBKEY_HASH_LEN - 2);
8742 if (wpa_s->p2p_oob_dev_pw == NULL)
8743 return -1;
8744
8745 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8746 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8747 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8748 return -1;
8749 } else {
8750 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8751 "without Device Password");
8752 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8753 }
8754
8755 switch (params.next_step) {
8756 case NO_ACTION:
8757 case BOTH_GO:
8758 case PEER_CLIENT:
8759 /* already covered above */
8760 return 0;
8761 case JOIN_GROUP:
8762 return wpas_p2p_nfc_join_group(wpa_s, &params);
8763 case AUTH_JOIN:
8764 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8765 case INIT_GO_NEG:
8766 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8767 case RESP_GO_NEG:
8768 /* TODO: use own OOB Dev Pw */
8769 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8770 }
8771
8772 return -1;
8773 }
8774
8775
8776 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8777 const struct wpabuf *data, int forced_freq)
8778 {
8779 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8780 return -1;
8781
8782 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8783 }
8784
8785
8786 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8787 const struct wpabuf *req,
8788 const struct wpabuf *sel, int forced_freq)
8789 {
8790 struct wpabuf *tmp;
8791 int ret;
8792
8793 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8794 return -1;
8795
8796 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8797
8798 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8799 wpabuf_head(req), wpabuf_len(req));
8800 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8801 wpabuf_head(sel), wpabuf_len(sel));
8802 if (forced_freq)
8803 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8804 tmp = ndef_parse_p2p(init ? sel : req);
8805 if (tmp == NULL) {
8806 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8807 return -1;
8808 }
8809
8810 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8811 forced_freq);
8812 wpabuf_free(tmp);
8813
8814 return ret;
8815 }
8816
8817
8818 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8819 {
8820 const u8 *if_addr;
8821 int go_intent = wpa_s->conf->p2p_go_intent;
8822 struct wpa_supplicant *iface;
8823
8824 if (wpa_s->global->p2p == NULL)
8825 return -1;
8826
8827 if (!enabled) {
8828 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8829 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8830 {
8831 if (!iface->ap_iface)
8832 continue;
8833 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8834 }
8835 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8836 0, NULL);
8837 if (wpa_s->p2p_nfc_tag_enabled)
8838 wpas_p2p_remove_pending_group_interface(wpa_s);
8839 wpa_s->p2p_nfc_tag_enabled = 0;
8840 return 0;
8841 }
8842
8843 if (wpa_s->global->p2p_disabled)
8844 return -1;
8845
8846 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8847 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8848 wpa_s->conf->wps_nfc_dev_pw == NULL ||
8849 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8850 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8851 "to allow static handover cases");
8852 return -1;
8853 }
8854
8855 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8856
8857 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8858 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8859 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8860 if (wpa_s->p2p_oob_dev_pw == NULL)
8861 return -1;
8862 wpa_s->p2p_peer_oob_pk_hash_known = 0;
8863
8864 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8865 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8866 /*
8867 * P2P Group Interface present and the command came on group
8868 * interface, so enable the token for the current interface.
8869 */
8870 wpa_s->create_p2p_iface = 0;
8871 } else {
8872 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8873 }
8874
8875 if (wpa_s->create_p2p_iface) {
8876 enum wpa_driver_if_type iftype;
8877 /* Prepare to add a new interface for the group */
8878 iftype = WPA_IF_P2P_GROUP;
8879 if (go_intent == 15)
8880 iftype = WPA_IF_P2P_GO;
8881 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8882 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8883 "interface for the group");
8884 return -1;
8885 }
8886
8887 if_addr = wpa_s->pending_interface_addr;
8888 } else if (wpa_s->p2p_mgmt)
8889 if_addr = wpa_s->parent->own_addr;
8890 else
8891 if_addr = wpa_s->own_addr;
8892
8893 wpa_s->p2p_nfc_tag_enabled = enabled;
8894
8895 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8896 struct hostapd_data *hapd;
8897 if (iface->ap_iface == NULL)
8898 continue;
8899 hapd = iface->ap_iface->bss[0];
8900 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8901 hapd->conf->wps_nfc_dh_pubkey =
8902 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8903 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8904 hapd->conf->wps_nfc_dh_privkey =
8905 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8906 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8907 hapd->conf->wps_nfc_dev_pw =
8908 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8909 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8910
8911 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8912 wpa_dbg(iface, MSG_DEBUG,
8913 "P2P: Failed to enable NFC Tag for GO");
8914 }
8915 }
8916 p2p_set_authorized_oob_dev_pw_id(
8917 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8918 if_addr);
8919
8920 return 0;
8921 }
8922
8923 #endif /* CONFIG_WPS_NFC */
8924
8925
8926 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8927 struct wpa_used_freq_data *freqs,
8928 unsigned int num)
8929 {
8930 u8 curr_chan, cand, chan;
8931 unsigned int i;
8932
8933 /*
8934 * If possible, optimize the Listen channel to be a channel that is
8935 * already used by one of the other interfaces.
8936 */
8937 if (!wpa_s->conf->p2p_optimize_listen_chan)
8938 return;
8939
8940 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8941 return;
8942
8943 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8944 for (i = 0, cand = 0; i < num; i++) {
8945 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8946 if (curr_chan == chan) {
8947 cand = 0;
8948 break;
8949 }
8950
8951 if (chan == 1 || chan == 6 || chan == 11)
8952 cand = chan;
8953 }
8954
8955 if (cand) {
8956 wpa_dbg(wpa_s, MSG_DEBUG,
8957 "P2P: Update Listen channel to %u based on operating channel",
8958 cand);
8959 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8960 }
8961 }
8962
8963
8964 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8965 {
8966 struct hostapd_config *conf;
8967 struct p2p_go_neg_results params;
8968 struct csa_settings csa_settings;
8969 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8970 int old_freq = current_ssid->frequency;
8971 int ret;
8972
8973 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8974 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8975 return -1;
8976 }
8977
8978 /*
8979 * TODO: This function may not always work correctly. For example,
8980 * when we have a running GO and a BSS on a DFS channel.
8981 */
8982 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8983 wpa_dbg(wpa_s, MSG_DEBUG,
8984 "P2P CSA: Failed to select new frequency for GO");
8985 return -1;
8986 }
8987
8988 if (current_ssid->frequency == params.freq) {
8989 wpa_dbg(wpa_s, MSG_DEBUG,
8990 "P2P CSA: Selected same frequency - not moving GO");
8991 return 0;
8992 }
8993
8994 conf = hostapd_config_defaults();
8995 if (!conf) {
8996 wpa_dbg(wpa_s, MSG_DEBUG,
8997 "P2P CSA: Failed to allocate default config");
8998 return -1;
8999 }
9000
9001 current_ssid->frequency = params.freq;
9002 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
9003 wpa_dbg(wpa_s, MSG_DEBUG,
9004 "P2P CSA: Failed to create new GO config");
9005 ret = -1;
9006 goto out;
9007 }
9008
9009 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
9010 wpa_dbg(wpa_s, MSG_DEBUG,
9011 "P2P CSA: CSA to a different band is not supported");
9012 ret = -1;
9013 goto out;
9014 }
9015
9016 os_memset(&csa_settings, 0, sizeof(csa_settings));
9017 csa_settings.cs_count = P2P_GO_CSA_COUNT;
9018 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
9019 csa_settings.freq_params.freq = params.freq;
9020 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
9021 csa_settings.freq_params.ht_enabled = conf->ieee80211n;
9022 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
9023
9024 if (conf->ieee80211ac) {
9025 int freq1 = 0, freq2 = 0;
9026 u8 chan, opclass;
9027
9028 if (ieee80211_freq_to_channel_ext(params.freq,
9029 conf->secondary_channel,
9030 conf->vht_oper_chwidth,
9031 &opclass, &chan) ==
9032 NUM_HOSTAPD_MODES) {
9033 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
9034 ret = -1;
9035 goto out;
9036 }
9037
9038 if (conf->vht_oper_centr_freq_seg0_idx)
9039 freq1 = ieee80211_chan_to_freq(
9040 NULL, opclass,
9041 conf->vht_oper_centr_freq_seg0_idx);
9042
9043 if (conf->vht_oper_centr_freq_seg1_idx)
9044 freq2 = ieee80211_chan_to_freq(
9045 NULL, opclass,
9046 conf->vht_oper_centr_freq_seg1_idx);
9047
9048 if (freq1 < 0 || freq2 < 0) {
9049 wpa_dbg(wpa_s, MSG_DEBUG,
9050 "P2P CSA: Selected invalid VHT center freqs");
9051 ret = -1;
9052 goto out;
9053 }
9054
9055 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
9056 csa_settings.freq_params.center_freq1 = freq1;
9057 csa_settings.freq_params.center_freq2 = freq2;
9058
9059 switch (conf->vht_oper_chwidth) {
9060 case VHT_CHANWIDTH_80MHZ:
9061 case VHT_CHANWIDTH_80P80MHZ:
9062 csa_settings.freq_params.bandwidth = 80;
9063 break;
9064 case VHT_CHANWIDTH_160MHZ:
9065 csa_settings.freq_params.bandwidth = 160;
9066 break;
9067 }
9068 }
9069
9070 ret = ap_switch_channel(wpa_s, &csa_settings);
9071 out:
9072 current_ssid->frequency = old_freq;
9073 hostapd_config_free(conf);
9074 return ret;
9075 }
9076
9077
9078 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
9079 {
9080 struct p2p_go_neg_results params;
9081 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9082
9083 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
9084
9085 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
9086 current_ssid->frequency);
9087
9088 /* Stop the AP functionality */
9089 /* TODO: Should do this in a way that does not indicated to possible
9090 * P2P Clients in the group that the group is terminated. */
9091 wpa_supplicant_ap_deinit(wpa_s);
9092
9093 /* Reselect the GO frequency */
9094 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
9095 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
9096 wpas_p2p_group_delete(wpa_s,
9097 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9098 return;
9099 }
9100 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
9101 params.freq);
9102
9103 if (params.freq &&
9104 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
9105 wpa_printf(MSG_DEBUG,
9106 "P2P: Selected freq (%u MHz) is not valid for P2P",
9107 params.freq);
9108 wpas_p2p_group_delete(wpa_s,
9109 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9110 return;
9111 }
9112
9113 /* Update the frequency */
9114 current_ssid->frequency = params.freq;
9115 wpa_s->connect_without_scan = current_ssid;
9116 wpa_s->reassociate = 1;
9117 wpa_s->disconnected = 0;
9118 wpa_supplicant_req_scan(wpa_s, 0, 0);
9119 }
9120
9121
9122 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
9123 {
9124 struct wpa_supplicant *wpa_s = eloop_ctx;
9125
9126 if (!wpa_s->ap_iface || !wpa_s->current_ssid)
9127 return;
9128
9129 wpas_p2p_go_update_common_freqs(wpa_s);
9130
9131 /* Do not move GO in the middle of a CSA */
9132 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9133 wpa_printf(MSG_DEBUG,
9134 "P2P: CSA is in progress - not moving GO");
9135 return;
9136 }
9137
9138 /*
9139 * First, try a channel switch flow. If it is not supported or fails,
9140 * take down the GO and bring it up again.
9141 */
9142 if (wpas_p2p_move_go_csa(wpa_s) < 0)
9143 wpas_p2p_move_go_no_csa(wpa_s);
9144 }
9145
9146
9147 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9148 {
9149 struct wpa_supplicant *wpa_s = eloop_ctx;
9150 struct wpa_used_freq_data *freqs = NULL;
9151 unsigned int num = wpa_s->num_multichan_concurrent;
9152
9153 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9154 if (!freqs)
9155 return;
9156
9157 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9158
9159 /* Previous attempt to move a GO was not possible -- try again. */
9160 wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9161 WPAS_P2P_CHANNEL_UPDATE_ANY);
9162
9163 os_free(freqs);
9164 }
9165
9166
9167 /*
9168 * Consider moving a GO from its currently used frequency:
9169 * 1. It is possible that due to regulatory consideration the frequency
9170 * can no longer be used and there is a need to evacuate the GO.
9171 * 2. It is possible that due to MCC considerations, it would be preferable
9172 * to move the GO to a channel that is currently used by some other
9173 * station interface.
9174 *
9175 * In case a frequency that became invalid is once again valid, cancel a
9176 * previously initiated GO frequency change.
9177 */
9178 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9179 struct wpa_used_freq_data *freqs,
9180 unsigned int num)
9181 {
9182 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9183 unsigned int timeout;
9184 int freq;
9185 int dfs_offload;
9186
9187 wpas_p2p_go_update_common_freqs(wpa_s);
9188
9189 freq = wpa_s->current_ssid->frequency;
9190 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
9191 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes);
9192 for (i = 0, invalid_freq = 0; i < num; i++) {
9193 if (freqs[i].freq == freq) {
9194 flags = freqs[i].flags;
9195
9196 /* The channel is invalid, must change it */
9197 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
9198 !dfs_offload) {
9199 wpa_dbg(wpa_s, MSG_DEBUG,
9200 "P2P: Freq=%d MHz no longer valid for GO",
9201 freq);
9202 invalid_freq = 1;
9203 }
9204 } else if (freqs[i].flags == 0) {
9205 /* Freq is not used by any other station interface */
9206 continue;
9207 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9208 freqs[i].freq) && !dfs_offload) {
9209 /* Freq is not valid for P2P use cases */
9210 continue;
9211 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9212 P2P_GO_FREQ_MOVE_SCM) {
9213 policy_move = 1;
9214 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9215 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9216 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9217 policy_move = 1;
9218 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9219 P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9220 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9221 if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9222 policy_move = 1;
9223 } else if ((wpa_s->drv_flags &
9224 WPA_DRIVER_FLAGS_AP_CSA) &&
9225 wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9226 u8 chan;
9227
9228 /*
9229 * We do not support CSA between bands, so move
9230 * GO only within the same band.
9231 */
9232 if (wpa_s->ap_iface->current_mode->mode ==
9233 ieee80211_freq_to_chan(freqs[i].freq,
9234 &chan))
9235 policy_move = 1;
9236 }
9237 }
9238 }
9239
9240 wpa_dbg(wpa_s, MSG_DEBUG,
9241 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9242 invalid_freq, policy_move, flags);
9243
9244 /*
9245 * The channel is valid, or we are going to have a policy move, so
9246 * cancel timeout.
9247 */
9248 if (!invalid_freq || policy_move) {
9249 wpa_dbg(wpa_s, MSG_DEBUG,
9250 "P2P: Cancel a GO move from freq=%d MHz", freq);
9251 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9252
9253 if (wpas_p2p_in_progress(wpa_s)) {
9254 wpa_dbg(wpa_s, MSG_DEBUG,
9255 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9256 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9257 wpa_s, NULL);
9258 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9259 wpas_p2p_reconsider_moving_go,
9260 wpa_s, NULL);
9261 return;
9262 }
9263 }
9264
9265 if (!invalid_freq && (!policy_move || flags != 0)) {
9266 wpa_dbg(wpa_s, MSG_DEBUG,
9267 "P2P: Not initiating a GO frequency change");
9268 return;
9269 }
9270
9271 /*
9272 * Do not consider moving GO if it is in the middle of a CSA. When the
9273 * CSA is finished this flow should be retriggered.
9274 */
9275 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9276 wpa_dbg(wpa_s, MSG_DEBUG,
9277 "P2P: Not initiating a GO frequency change - CSA is in progress");
9278 return;
9279 }
9280
9281 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9282 timeout = P2P_GO_FREQ_CHANGE_TIME;
9283 else
9284 timeout = 0;
9285
9286 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9287 freq, timeout);
9288 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9289 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9290 }
9291
9292
9293 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9294 struct wpa_used_freq_data *freqs,
9295 unsigned int num,
9296 enum wpas_p2p_channel_update_trig trig)
9297 {
9298 struct wpa_supplicant *ifs;
9299
9300 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9301 NULL);
9302
9303 /*
9304 * Travers all the radio interfaces, and for each GO interface, check
9305 * if there is a need to move the GO from the frequency it is using,
9306 * or in case the frequency is valid again, cancel the evacuation flow.
9307 */
9308 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9309 radio_list) {
9310 if (ifs->current_ssid == NULL ||
9311 ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9312 continue;
9313
9314 /*
9315 * The GO was just started or completed channel switch, no need
9316 * to move it.
9317 */
9318 if (wpa_s == ifs &&
9319 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9320 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9321 wpa_dbg(wpa_s, MSG_DEBUG,
9322 "P2P: GO move - schedule re-consideration");
9323 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9324 wpas_p2p_reconsider_moving_go,
9325 wpa_s, NULL);
9326 continue;
9327 }
9328
9329 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9330 }
9331 }
9332
9333
9334 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9335 {
9336 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9337 return;
9338
9339 wpas_p2p_update_channel_list(wpa_s,
9340 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9341 }
9342
9343
9344 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9345 {
9346 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9347 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9348 "the management interface is being removed");
9349 wpas_p2p_deinit_global(wpa_s->global);
9350 }
9351 }
9352
9353
9354 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9355 {
9356 if (wpa_s->ap_iface->bss)
9357 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9358 wpas_p2p_group_deinit(wpa_s);
9359 }
9360
9361
9362 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9363 unsigned int period, unsigned int interval,
9364 unsigned int count)
9365 {
9366 struct p2p_data *p2p = wpa_s->global->p2p;
9367 u8 *device_types;
9368 size_t dev_types_len;
9369 struct wpabuf *buf;
9370 int ret;
9371
9372 if (wpa_s->p2p_lo_started) {
9373 wpa_dbg(wpa_s, MSG_DEBUG,
9374 "P2P Listen offload is already started");
9375 return 0;
9376 }
9377
9378 if (wpa_s->global->p2p == NULL ||
9379 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9380 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9381 return -1;
9382 }
9383
9384 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9385 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9386 freq);
9387 return -1;
9388 }
9389
9390 /* Get device type */
9391 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9392 WPS_DEV_TYPE_LEN;
9393 device_types = os_malloc(dev_types_len);
9394 if (!device_types)
9395 return -1;
9396 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9397 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9398 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9399
9400 /* Get Probe Response IE(s) */
9401 buf = p2p_build_probe_resp_template(p2p, freq);
9402 if (!buf) {
9403 os_free(device_types);
9404 return -1;
9405 }
9406
9407 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9408 device_types, dev_types_len,
9409 wpabuf_mhead_u8(buf), wpabuf_len(buf));
9410 if (ret < 0)
9411 wpa_dbg(wpa_s, MSG_DEBUG,
9412 "P2P: Failed to start P2P listen offload");
9413
9414 os_free(device_types);
9415 wpabuf_free(buf);
9416
9417 if (ret == 0) {
9418 wpa_s->p2p_lo_started = 1;
9419
9420 /* Stop current P2P listen if any */
9421 wpas_stop_listen(wpa_s);
9422 }
9423
9424 return ret;
9425 }
9426
9427
9428 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9429 {
9430 int ret;
9431
9432 if (!wpa_s->p2p_lo_started)
9433 return 0;
9434
9435 ret = wpa_drv_p2p_lo_stop(wpa_s);
9436 if (ret < 0)
9437 wpa_dbg(wpa_s, MSG_DEBUG,
9438 "P2P: Failed to stop P2P listen offload");
9439
9440 wpa_s->p2p_lo_started = 0;
9441 return ret;
9442 }
Unnamed repository; edit this file 'description' to name the repository.