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52 * it is currently using, but is no longer valid for P2P use cases.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57 * Defines CSA parameters which are used when GO evacuates the no longer valid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 */
wpas_p2p_num_unused_channels(struct wpa_supplicant * wpa_s)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
wpas_p2p_valid_oper_freqs(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * p2p_freqs,unsigned int len)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
wpas_p2p_set_own_freq_preference(struct wpa_supplicant * wpa_s,int freq)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
wpas_p2p_scan_res_handler(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)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
wpas_p2p_trigger_scan_cb(struct wpa_radio_work * work,int deinit)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
wpas_p2p_search_social_channel(struct wpa_supplicant * wpa_s,int freq)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
wpas_p2p_scan(void * ctx,enum p2p_scan_type type,int freq,unsigned int num_req_dev_types,const u8 * req_dev_types,const u8 * dev_id,u16 pw_id)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
wpas_p2p_if_type(int p2p_group_interface)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
wpas_get_p2p_group(struct wpa_supplicant * wpa_s,const u8 * ssid,size_t ssid_len,int * go)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
run_wpas_p2p_disconnect(void * eloop_ctx,void * timeout_ctx)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
wpas_p2p_disconnect_safely(struct wpa_supplicant * wpa_s,struct wpa_supplicant * calling_wpa_s)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 */
p2p_group_go_member_count(struct wpa_supplicant * wpa_s)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
p2p_is_active_persistent_group(struct wpa_supplicant * wpa_s)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
p2p_is_active_persistent_go(struct wpa_supplicant * wpa_s)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 *
wpas_p2p_get_go_group(struct wpa_supplicant * wpa_s)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
p2p_is_active_persistent_cli(struct wpa_supplicant * wpa_s)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 *
wpas_p2p_get_cli_group(struct wpa_supplicant * wpa_s)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 *
wpas_p2p_get_persistent_go(struct wpa_supplicant * wpa_s)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
p2ps_group_capability(void * ctx,u8 incoming,u8 role,unsigned int * force_freq,unsigned int * pref_freq)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
wpas_p2p_group_delete(struct wpa_supplicant * wpa_s,enum p2p_group_removal_reason removal_reason)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 wpa_s->p2p_go_do_acs = 0;
984
985 wpa_s->waiting_presence_resp = 0;
986
987 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
988 if (ssid && (ssid->p2p_group ||
989 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
990 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
991 int id = ssid->id;
992 if (ssid == wpa_s->current_ssid) {
993 wpa_sm_set_config(wpa_s->wpa, NULL);
994 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
995 wpa_s->current_ssid = NULL;
996 }
997 /*
998 * Networks objects created during any P2P activities are not
999 * exposed out as they might/will confuse certain non-P2P aware
1000 * applications since these network objects won't behave like
1001 * regular ones.
1002 *
1003 * Likewise, we don't send out network removed signals for such
1004 * network objects.
1005 */
1006 wpa_config_remove_network(wpa_s->conf, id);
1007 wpa_supplicant_clear_status(wpa_s);
1008 wpa_supplicant_cancel_sched_scan(wpa_s);
1009 } else {
1010 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1011 "found");
1012 }
1013 if (wpa_s->ap_iface)
1014 wpa_supplicant_ap_deinit(wpa_s);
1015 else
1016 wpa_drv_deinit_p2p_cli(wpa_s);
1017
1018 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1019
1020 return 0;
1021 }
1022
1023
wpas_p2p_persistent_group(struct wpa_supplicant * wpa_s,u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)1024 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1025 u8 *go_dev_addr,
1026 const u8 *ssid, size_t ssid_len)
1027 {
1028 struct wpa_bss *bss;
1029 const u8 *bssid;
1030 struct wpabuf *p2p;
1031 u8 group_capab;
1032 const u8 *addr;
1033
1034 if (wpa_s->go_params)
1035 bssid = wpa_s->go_params->peer_interface_addr;
1036 else
1037 bssid = wpa_s->bssid;
1038
1039 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1040 if (bss == NULL && wpa_s->go_params &&
1041 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1042 bss = wpa_bss_get_p2p_dev_addr(
1043 wpa_s, wpa_s->go_params->peer_device_addr);
1044 if (bss == NULL) {
1045 u8 iface_addr[ETH_ALEN];
1046 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1047 iface_addr) == 0)
1048 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1049 }
1050 if (bss == NULL) {
1051 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1052 "group is persistent - BSS " MACSTR " not found",
1053 MAC2STR(bssid));
1054 return 0;
1055 }
1056
1057 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1058 if (p2p == NULL)
1059 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1060 P2P_IE_VENDOR_TYPE);
1061 if (p2p == NULL) {
1062 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1063 "group is persistent - BSS " MACSTR
1064 " did not include P2P IE", MAC2STR(bssid));
1065 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1066 (u8 *) (bss + 1), bss->ie_len);
1067 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1068 ((u8 *) bss + 1) + bss->ie_len,
1069 bss->beacon_ie_len);
1070 return 0;
1071 }
1072
1073 group_capab = p2p_get_group_capab(p2p);
1074 addr = p2p_get_go_dev_addr(p2p);
1075 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1076 "group_capab=0x%x", group_capab);
1077 if (addr) {
1078 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1079 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1080 MAC2STR(addr));
1081 } else
1082 os_memset(go_dev_addr, 0, ETH_ALEN);
1083 wpabuf_free(p2p);
1084
1085 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1086 "go_dev_addr=" MACSTR,
1087 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1088
1089 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP);
1090 }
1091
1092
wpas_p2p_store_persistent_group(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * go_dev_addr)1093 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1094 struct wpa_ssid *ssid,
1095 const u8 *go_dev_addr)
1096 {
1097 struct wpa_ssid *s;
1098 int changed = 0;
1099
1100 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1101 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1102 for (s = wpa_s->conf->ssid; s; s = s->next) {
1103 if (s->disabled == 2 &&
1104 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1105 s->ssid_len == ssid->ssid_len &&
1106 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1107 break;
1108 }
1109
1110 if (s) {
1111 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1112 "entry");
1113 if (ssid->passphrase && !s->passphrase)
1114 changed = 1;
1115 else if (ssid->passphrase && s->passphrase &&
1116 os_strcmp(ssid->passphrase, s->passphrase) != 0)
1117 changed = 1;
1118 } else {
1119 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1120 "entry");
1121 changed = 1;
1122 s = wpa_config_add_network(wpa_s->conf);
1123 if (s == NULL)
1124 return -1;
1125
1126 /*
1127 * Instead of network_added we emit persistent_group_added
1128 * notification. Also to keep the defense checks in
1129 * persistent_group obj registration method, we set the
1130 * relevant flags in s to designate it as a persistent group.
1131 */
1132 s->p2p_group = 1;
1133 s->p2p_persistent_group = 1;
1134 wpas_notify_persistent_group_added(wpa_s, s);
1135 wpa_config_set_network_defaults(s);
1136 }
1137
1138 s->p2p_group = 1;
1139 s->p2p_persistent_group = 1;
1140 s->disabled = 2;
1141 s->bssid_set = 1;
1142 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1143 s->mode = ssid->mode;
1144 s->auth_alg = WPA_AUTH_ALG_OPEN;
1145 s->key_mgmt = WPA_KEY_MGMT_PSK;
1146 s->proto = WPA_PROTO_RSN;
1147 s->pbss = ssid->pbss;
1148 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1149 s->export_keys = 1;
1150 if (ssid->passphrase) {
1151 os_free(s->passphrase);
1152 s->passphrase = os_strdup(ssid->passphrase);
1153 }
1154 if (ssid->psk_set) {
1155 s->psk_set = 1;
1156 os_memcpy(s->psk, ssid->psk, 32);
1157 }
1158 if (s->passphrase && !s->psk_set)
1159 wpa_config_update_psk(s);
1160 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1161 os_free(s->ssid);
1162 s->ssid = os_malloc(ssid->ssid_len);
1163 }
1164 if (s->ssid) {
1165 s->ssid_len = ssid->ssid_len;
1166 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1167 }
1168 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1169 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1170 wpa_s->global->add_psk = NULL;
1171 changed = 1;
1172 }
1173
1174 if (changed && wpa_s->conf->update_config &&
1175 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1176 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1177 }
1178
1179 return s->id;
1180 }
1181
1182
wpas_p2p_add_persistent_group_client(struct wpa_supplicant * wpa_s,const u8 * addr)1183 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1184 const u8 *addr)
1185 {
1186 struct wpa_ssid *ssid, *s;
1187 u8 *n;
1188 size_t i;
1189 int found = 0;
1190 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1191
1192 ssid = wpa_s->current_ssid;
1193 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1194 !ssid->p2p_persistent_group)
1195 return;
1196
1197 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1198 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1199 continue;
1200
1201 if (s->ssid_len == ssid->ssid_len &&
1202 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1203 break;
1204 }
1205
1206 if (s == NULL)
1207 return;
1208
1209 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1210 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1211 ETH_ALEN) != 0)
1212 continue;
1213
1214 if (i == s->num_p2p_clients - 1)
1215 return; /* already the most recent entry */
1216
1217 /* move the entry to mark it most recent */
1218 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1219 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1220 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1221 os_memcpy(s->p2p_client_list +
1222 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1223 ETH_ALEN);
1224 os_memset(s->p2p_client_list +
1225 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1226 0xff, ETH_ALEN);
1227 found = 1;
1228 break;
1229 }
1230
1231 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1232 n = os_realloc_array(s->p2p_client_list,
1233 s->num_p2p_clients + 1, 2 * ETH_ALEN);
1234 if (n == NULL)
1235 return;
1236 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1237 ETH_ALEN);
1238 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1239 0xff, ETH_ALEN);
1240 s->p2p_client_list = n;
1241 s->num_p2p_clients++;
1242 } else if (!found && s->p2p_client_list) {
1243 /* Not enough room for an additional entry - drop the oldest
1244 * entry */
1245 os_memmove(s->p2p_client_list,
1246 s->p2p_client_list + 2 * ETH_ALEN,
1247 (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1248 os_memcpy(s->p2p_client_list +
1249 (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1250 addr, ETH_ALEN);
1251 os_memset(s->p2p_client_list +
1252 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1253 0xff, ETH_ALEN);
1254 }
1255
1256 if (p2p_wpa_s->conf->update_config &&
1257 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1258 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1259 }
1260
1261
wpas_p2p_group_started(struct wpa_supplicant * wpa_s,int go,struct wpa_ssid * ssid,int freq,const u8 * psk,const char * passphrase,const u8 * go_dev_addr,int persistent,const char * extra)1262 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1263 int go, struct wpa_ssid *ssid, int freq,
1264 const u8 *psk, const char *passphrase,
1265 const u8 *go_dev_addr, int persistent,
1266 const char *extra)
1267 {
1268 const char *ssid_txt;
1269 char psk_txt[65];
1270
1271 if (psk)
1272 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1273 else
1274 psk_txt[0] = '\0';
1275
1276 if (ssid)
1277 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1278 else
1279 ssid_txt = "";
1280
1281 if (passphrase && passphrase[0] == '\0')
1282 passphrase = NULL;
1283
1284 /*
1285 * Include PSK/passphrase only in the control interface message and
1286 * leave it out from the debug log entry.
1287 */
1288 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1289 P2P_EVENT_GROUP_STARTED
1290 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1291 MACSTR "%s%s",
1292 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1293 psk ? " psk=" : "", psk_txt,
1294 passphrase ? " passphrase=\"" : "",
1295 passphrase ? passphrase : "",
1296 passphrase ? "\"" : "",
1297 MAC2STR(go_dev_addr),
1298 persistent ? " [PERSISTENT]" : "", extra);
1299 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1300 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1301 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1302 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1303 extra);
1304 }
1305
1306
wpas_group_formation_completed(struct wpa_supplicant * wpa_s,int success,int already_deleted)1307 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1308 int success, int already_deleted)
1309 {
1310 struct wpa_ssid *ssid;
1311 int client;
1312 int persistent;
1313 u8 go_dev_addr[ETH_ALEN];
1314
1315 /*
1316 * This callback is likely called for the main interface. Update wpa_s
1317 * to use the group interface if a new interface was created for the
1318 * group.
1319 */
1320 if (wpa_s->global->p2p_group_formation)
1321 wpa_s = wpa_s->global->p2p_group_formation;
1322 if (wpa_s->p2p_go_group_formation_completed) {
1323 wpa_s->global->p2p_group_formation = NULL;
1324 wpa_s->p2p_in_provisioning = 0;
1325 } else if (wpa_s->p2p_in_provisioning && !success) {
1326 wpa_msg(wpa_s, MSG_DEBUG,
1327 "P2P: Stop provisioning state due to failure");
1328 wpa_s->p2p_in_provisioning = 0;
1329 }
1330 wpa_s->p2p_in_invitation = 0;
1331 wpa_s->group_formation_reported = 1;
1332
1333 if (!success) {
1334 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1335 P2P_EVENT_GROUP_FORMATION_FAILURE);
1336 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1337 if (already_deleted)
1338 return;
1339 wpas_p2p_group_delete(wpa_s,
1340 P2P_GROUP_REMOVAL_FORMATION_FAILED);
1341 return;
1342 }
1343
1344 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1345 P2P_EVENT_GROUP_FORMATION_SUCCESS);
1346
1347 ssid = wpa_s->current_ssid;
1348 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1349 ssid->mode = WPAS_MODE_P2P_GO;
1350 p2p_group_notif_formation_done(wpa_s->p2p_group);
1351 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1352 }
1353
1354 persistent = 0;
1355 if (ssid) {
1356 client = ssid->mode == WPAS_MODE_INFRA;
1357 if (ssid->mode == WPAS_MODE_P2P_GO) {
1358 persistent = ssid->p2p_persistent_group;
1359 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1360 ETH_ALEN);
1361 } else
1362 persistent = wpas_p2p_persistent_group(wpa_s,
1363 go_dev_addr,
1364 ssid->ssid,
1365 ssid->ssid_len);
1366 } else {
1367 client = wpa_s->p2p_group_interface ==
1368 P2P_GROUP_INTERFACE_CLIENT;
1369 os_memset(go_dev_addr, 0, ETH_ALEN);
1370 }
1371
1372 wpa_s->show_group_started = 0;
1373 if (client) {
1374 /*
1375 * Indicate event only after successfully completed 4-way
1376 * handshake, i.e., when the interface is ready for data
1377 * packets.
1378 */
1379 wpa_s->show_group_started = 1;
1380 } else {
1381 wpas_p2p_group_started(wpa_s, 1, ssid,
1382 ssid ? ssid->frequency : 0,
1383 ssid && ssid->passphrase == NULL &&
1384 ssid->psk_set ? ssid->psk : NULL,
1385 ssid ? ssid->passphrase : NULL,
1386 go_dev_addr, persistent, "");
1387 wpas_p2p_cross_connect_setup(wpa_s);
1388 wpas_p2p_set_group_idle_timeout(wpa_s);
1389 }
1390
1391 if (persistent)
1392 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1393 ssid, go_dev_addr);
1394 else {
1395 os_free(wpa_s->global->add_psk);
1396 wpa_s->global->add_psk = NULL;
1397 }
1398
1399 if (!client) {
1400 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL);
1401 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1402 }
1403 }
1404
1405
1406 struct send_action_work {
1407 unsigned int freq;
1408 u8 dst[ETH_ALEN];
1409 u8 src[ETH_ALEN];
1410 u8 bssid[ETH_ALEN];
1411 size_t len;
1412 unsigned int wait_time;
1413 u8 buf[0];
1414 };
1415
1416
wpas_p2p_free_send_action_work(struct wpa_supplicant * wpa_s)1417 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1418 {
1419 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1420
1421 wpa_printf(MSG_DEBUG,
1422 "P2P: Free Action frame radio work @%p (freq=%u dst="
1423 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1424 wpa_s->p2p_send_action_work, awork->freq,
1425 MAC2STR(awork->dst), MAC2STR(awork->src),
1426 MAC2STR(awork->bssid), awork->wait_time);
1427 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1428 awork->buf, awork->len);
1429 os_free(awork);
1430 wpa_s->p2p_send_action_work->ctx = NULL;
1431 radio_work_done(wpa_s->p2p_send_action_work);
1432 wpa_s->p2p_send_action_work = NULL;
1433 }
1434
1435
wpas_p2p_send_action_work_timeout(void * eloop_ctx,void * timeout_ctx)1436 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1437 void *timeout_ctx)
1438 {
1439 struct wpa_supplicant *wpa_s = eloop_ctx;
1440
1441 if (!wpa_s->p2p_send_action_work)
1442 return;
1443
1444 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1445 wpas_p2p_free_send_action_work(wpa_s);
1446 }
1447
1448
wpas_p2p_action_tx_clear(struct wpa_supplicant * wpa_s)1449 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1450 {
1451 if (wpa_s->p2p_send_action_work) {
1452 struct send_action_work *awork;
1453
1454 awork = wpa_s->p2p_send_action_work->ctx;
1455 wpa_printf(MSG_DEBUG,
1456 "P2P: Clear Action TX work @%p (wait_time=%u)",
1457 wpa_s->p2p_send_action_work, awork->wait_time);
1458 if (awork->wait_time == 0) {
1459 wpas_p2p_free_send_action_work(wpa_s);
1460 } else {
1461 /*
1462 * In theory, this should not be needed, but number of
1463 * places in the P2P code is still using non-zero wait
1464 * time for the last Action frame in the sequence and
1465 * some of these do not call send_action_done().
1466 */
1467 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1468 wpa_s, NULL);
1469 eloop_register_timeout(
1470 0, awork->wait_time * 1000,
1471 wpas_p2p_send_action_work_timeout,
1472 wpa_s, NULL);
1473 }
1474 }
1475 }
1476
1477
wpas_p2p_send_action_tx_status(struct wpa_supplicant * wpa_s,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * data,size_t data_len,enum offchannel_send_action_result result)1478 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1479 unsigned int freq,
1480 const u8 *dst, const u8 *src,
1481 const u8 *bssid,
1482 const u8 *data, size_t data_len,
1483 enum offchannel_send_action_result
1484 result)
1485 {
1486 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1487
1488 wpas_p2p_action_tx_clear(wpa_s);
1489
1490 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1491 return;
1492
1493 switch (result) {
1494 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1495 res = P2P_SEND_ACTION_SUCCESS;
1496 break;
1497 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1498 res = P2P_SEND_ACTION_NO_ACK;
1499 break;
1500 case OFFCHANNEL_SEND_ACTION_FAILED:
1501 res = P2P_SEND_ACTION_FAILED;
1502 break;
1503 }
1504
1505 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1506
1507 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1508 wpa_s->pending_pd_before_join &&
1509 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1510 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1511 wpa_s->p2p_fallback_to_go_neg) {
1512 wpa_s->pending_pd_before_join = 0;
1513 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1514 "during p2p_connect-auto");
1515 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1516 P2P_EVENT_FALLBACK_TO_GO_NEG
1517 "reason=no-ACK-to-PD-Req");
1518 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1519 return;
1520 }
1521 }
1522
1523
wpas_send_action_cb(struct wpa_radio_work * work,int deinit)1524 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1525 {
1526 struct wpa_supplicant *wpa_s = work->wpa_s;
1527 struct send_action_work *awork = work->ctx;
1528
1529 if (deinit) {
1530 if (work->started) {
1531 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1532 wpa_s, NULL);
1533 wpa_s->p2p_send_action_work = NULL;
1534 offchannel_send_action_done(wpa_s);
1535 }
1536 os_free(awork);
1537 return;
1538 }
1539
1540 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1541 awork->bssid, awork->buf, awork->len,
1542 awork->wait_time,
1543 wpas_p2p_send_action_tx_status, 1) < 0) {
1544 os_free(awork);
1545 radio_work_done(work);
1546 return;
1547 }
1548 wpa_s->p2p_send_action_work = work;
1549 }
1550
1551
wpas_send_action_work(struct wpa_supplicant * wpa_s,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time)1552 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1553 unsigned int freq, const u8 *dst,
1554 const u8 *src, const u8 *bssid, const u8 *buf,
1555 size_t len, unsigned int wait_time)
1556 {
1557 struct send_action_work *awork;
1558
1559 if (radio_work_pending(wpa_s, "p2p-send-action")) {
1560 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1561 return -1;
1562 }
1563
1564 awork = os_zalloc(sizeof(*awork) + len);
1565 if (awork == NULL)
1566 return -1;
1567
1568 awork->freq = freq;
1569 os_memcpy(awork->dst, dst, ETH_ALEN);
1570 os_memcpy(awork->src, src, ETH_ALEN);
1571 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1572 awork->len = len;
1573 awork->wait_time = wait_time;
1574 os_memcpy(awork->buf, buf, len);
1575
1576 if (radio_add_work(wpa_s, freq, "p2p-send-action", 1,
1577 wpas_send_action_cb, awork) < 0) {
1578 os_free(awork);
1579 return -1;
1580 }
1581
1582 return 0;
1583 }
1584
1585
wpas_send_action(void * ctx,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time,int * scheduled)1586 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1587 const u8 *src, const u8 *bssid, const u8 *buf,
1588 size_t len, unsigned int wait_time, int *scheduled)
1589 {
1590 struct wpa_supplicant *wpa_s = ctx;
1591 int listen_freq = -1, send_freq = -1;
1592
1593 if (scheduled)
1594 *scheduled = 0;
1595 if (wpa_s->p2p_listen_work)
1596 listen_freq = wpa_s->p2p_listen_work->freq;
1597 if (wpa_s->p2p_send_action_work)
1598 send_freq = wpa_s->p2p_send_action_work->freq;
1599 if (listen_freq != (int) freq && send_freq != (int) freq) {
1600 int res;
1601
1602 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d freq=%u)",
1603 listen_freq, send_freq, freq);
1604 res = wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1605 len, wait_time);
1606 if (res == 0 && scheduled)
1607 *scheduled = 1;
1608 return res;
1609 }
1610
1611 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1612 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1613 wait_time,
1614 wpas_p2p_send_action_tx_status, 1);
1615 }
1616
1617
wpas_send_action_done(void * ctx)1618 static void wpas_send_action_done(void *ctx)
1619 {
1620 struct wpa_supplicant *wpa_s = ctx;
1621
1622 if (wpa_s->p2p_send_action_work) {
1623 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1624 wpa_s, NULL);
1625 os_free(wpa_s->p2p_send_action_work->ctx);
1626 radio_work_done(wpa_s->p2p_send_action_work);
1627 wpa_s->p2p_send_action_work = NULL;
1628 }
1629
1630 offchannel_send_action_done(wpa_s);
1631 }
1632
1633
wpas_copy_go_neg_results(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params)1634 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1635 struct p2p_go_neg_results *params)
1636 {
1637 if (wpa_s->go_params == NULL) {
1638 wpa_s->go_params = os_malloc(sizeof(*params));
1639 if (wpa_s->go_params == NULL)
1640 return -1;
1641 }
1642 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1643 return 0;
1644 }
1645
1646
wpas_start_wps_enrollee(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * res)1647 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1648 struct p2p_go_neg_results *res)
1649 {
1650 wpa_s->group_formation_reported = 0;
1651 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1652 " dev_addr " MACSTR " wps_method %d",
1653 MAC2STR(res->peer_interface_addr),
1654 MAC2STR(res->peer_device_addr), res->wps_method);
1655 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1656 res->ssid, res->ssid_len);
1657 wpa_supplicant_ap_deinit(wpa_s);
1658 wpas_copy_go_neg_results(wpa_s, res);
1659 if (res->wps_method == WPS_PBC) {
1660 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1, 0);
1661 #ifdef CONFIG_WPS_NFC
1662 } else if (res->wps_method == WPS_NFC) {
1663 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1664 res->peer_interface_addr,
1665 wpa_s->p2pdev->p2p_oob_dev_pw,
1666 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1667 wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1668 DEV_PW_NFC_CONNECTION_HANDOVER ?
1669 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1670 NULL,
1671 NULL, 0, 0);
1672 #endif /* CONFIG_WPS_NFC */
1673 } else {
1674 u16 dev_pw_id = DEV_PW_DEFAULT;
1675 if (wpa_s->p2p_wps_method == WPS_P2PS)
1676 dev_pw_id = DEV_PW_P2PS_DEFAULT;
1677 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1678 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1679 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1680 wpa_s->p2p_pin, 1, dev_pw_id);
1681 }
1682 }
1683
1684
wpas_p2p_add_psk_list(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)1685 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1686 struct wpa_ssid *ssid)
1687 {
1688 struct wpa_ssid *persistent;
1689 struct psk_list_entry *psk;
1690 struct hostapd_data *hapd;
1691
1692 if (!wpa_s->ap_iface)
1693 return;
1694
1695 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1696 ssid->ssid_len);
1697 if (persistent == NULL)
1698 return;
1699
1700 hapd = wpa_s->ap_iface->bss[0];
1701
1702 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1703 list) {
1704 struct hostapd_wpa_psk *hpsk;
1705
1706 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1707 MACSTR " psk=%d",
1708 MAC2STR(psk->addr), psk->p2p);
1709 hpsk = os_zalloc(sizeof(*hpsk));
1710 if (hpsk == NULL)
1711 break;
1712 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1713 if (psk->p2p)
1714 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1715 else
1716 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1717 hpsk->next = hapd->conf->ssid.wpa_psk;
1718 hapd->conf->ssid.wpa_psk = hpsk;
1719 }
1720 }
1721
1722
p2p_go_dump_common_freqs(struct wpa_supplicant * wpa_s)1723 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1724 {
1725 char buf[20 + P2P_MAX_CHANNELS * 6];
1726 char *pos, *end;
1727 unsigned int i;
1728 int res;
1729
1730 pos = buf;
1731 end = pos + sizeof(buf);
1732 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
1733 res = os_snprintf(pos, end - pos, " %d",
1734 wpa_s->p2p_group_common_freqs[i]);
1735 if (os_snprintf_error(end - pos, res))
1736 break;
1737 pos += res;
1738 }
1739 *pos = '\0';
1740
1741 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf);
1742 }
1743
1744
p2p_go_save_group_common_freqs(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params)1745 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1746 struct p2p_go_neg_results *params)
1747 {
1748 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1749
1750 wpa_s->p2p_group_common_freqs_num = 0;
1751 os_free(wpa_s->p2p_group_common_freqs);
1752 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1753 if (!wpa_s->p2p_group_common_freqs)
1754 return;
1755
1756 for (i = 0; i < len; i++) {
1757 if (!wpa_s->go_params->freq_list[i])
1758 break;
1759 wpa_s->p2p_group_common_freqs[i] =
1760 wpa_s->go_params->freq_list[i];
1761 }
1762 wpa_s->p2p_group_common_freqs_num = i;
1763 }
1764
1765
p2p_config_write(struct wpa_supplicant * wpa_s)1766 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1767 {
1768 #ifndef CONFIG_NO_CONFIG_WRITE
1769 if (wpa_s->p2pdev->conf->update_config &&
1770 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1771 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1772 #endif /* CONFIG_NO_CONFIG_WRITE */
1773 }
1774
1775
p2p_go_configured(void * ctx,void * data)1776 static void p2p_go_configured(void *ctx, void *data)
1777 {
1778 struct wpa_supplicant *wpa_s = ctx;
1779 struct p2p_go_neg_results *params = data;
1780 struct wpa_ssid *ssid;
1781
1782 wpa_s->ap_configured_cb = NULL;
1783 wpa_s->ap_configured_cb_ctx = NULL;
1784 wpa_s->ap_configured_cb_data = NULL;
1785 if (!wpa_s->go_params) {
1786 wpa_printf(MSG_ERROR,
1787 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1788 return;
1789 }
1790
1791 p2p_go_save_group_common_freqs(wpa_s, params);
1792 p2p_go_dump_common_freqs(wpa_s);
1793
1794 ssid = wpa_s->current_ssid;
1795 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1796 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1797 if (wpa_s->global->p2p_group_formation == wpa_s)
1798 wpa_s->global->p2p_group_formation = NULL;
1799 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1800 params->passphrase[0] == '\0' ?
1801 params->psk : NULL,
1802 params->passphrase,
1803 wpa_s->global->p2p_dev_addr,
1804 params->persistent_group, "");
1805 wpa_s->group_formation_reported = 1;
1806
1807 if (wpa_s->p2pdev->p2ps_method_config_any) {
1808 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1809 wpa_dbg(wpa_s, MSG_DEBUG,
1810 "P2PS: Setting default PIN for ANY");
1811 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1812 "12345670", NULL, 0,
1813 0);
1814 } else {
1815 wpa_dbg(wpa_s, MSG_DEBUG,
1816 "P2PS: Setting default PIN for " MACSTR,
1817 MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1818 wpa_supplicant_ap_wps_pin(
1819 wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1820 "12345670", NULL, 0, 0);
1821 }
1822 wpa_s->p2pdev->p2ps_method_config_any = 0;
1823 }
1824
1825 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1826 if (params->persistent_group) {
1827 wpas_p2p_store_persistent_group(
1828 wpa_s->p2pdev, ssid,
1829 wpa_s->global->p2p_dev_addr);
1830 wpas_p2p_add_psk_list(wpa_s, ssid);
1831 }
1832
1833 wpas_notify_p2p_group_started(wpa_s, ssid,
1834 params->persistent_group, 0,
1835 NULL);
1836 wpas_p2p_cross_connect_setup(wpa_s);
1837 wpas_p2p_set_group_idle_timeout(wpa_s);
1838
1839 if (wpa_s->p2p_first_connection_timeout) {
1840 wpa_dbg(wpa_s, MSG_DEBUG,
1841 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1842 wpa_s->p2p_first_connection_timeout);
1843 wpa_s->p2p_go_group_formation_completed = 0;
1844 wpa_s->global->p2p_group_formation = wpa_s;
1845 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1846 wpa_s->p2pdev, NULL);
1847 eloop_register_timeout(
1848 wpa_s->p2p_first_connection_timeout, 0,
1849 wpas_p2p_group_formation_timeout,
1850 wpa_s->p2pdev, NULL);
1851 }
1852
1853 return;
1854 }
1855
1856 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1857 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1858 params->peer_interface_addr)) {
1859 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1860 "filtering");
1861 return;
1862 }
1863 if (params->wps_method == WPS_PBC) {
1864 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1865 params->peer_device_addr);
1866 #ifdef CONFIG_WPS_NFC
1867 } else if (params->wps_method == WPS_NFC) {
1868 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1869 DEV_PW_NFC_CONNECTION_HANDOVER &&
1870 !wpa_s->p2pdev->p2p_oob_dev_pw) {
1871 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1872 return;
1873 }
1874 wpas_ap_wps_add_nfc_pw(
1875 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1876 wpa_s->p2pdev->p2p_oob_dev_pw,
1877 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1878 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1879 #endif /* CONFIG_WPS_NFC */
1880 } else if (wpa_s->p2p_pin[0])
1881 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1882 wpa_s->p2p_pin, NULL, 0, 0);
1883 os_free(wpa_s->go_params);
1884 wpa_s->go_params = NULL;
1885 }
1886
1887
wpas_start_wps_go(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,int group_formation)1888 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1889 struct p2p_go_neg_results *params,
1890 int group_formation)
1891 {
1892 struct wpa_ssid *ssid;
1893
1894 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1895 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1896 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1897 "results");
1898 return;
1899 }
1900
1901 ssid = wpa_config_add_network(wpa_s->conf);
1902 if (ssid == NULL) {
1903 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1904 return;
1905 }
1906
1907 wpa_s->show_group_started = 0;
1908 wpa_s->p2p_go_group_formation_completed = 0;
1909 wpa_s->group_formation_reported = 0;
1910 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1911
1912 wpa_config_set_network_defaults(ssid);
1913 ssid->temporary = 1;
1914 ssid->p2p_group = 1;
1915 ssid->p2p_persistent_group = !!params->persistent_group;
1916 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1917 WPAS_MODE_P2P_GO;
1918 ssid->frequency = params->freq;
1919 ssid->ht40 = params->ht40;
1920 ssid->vht = params->vht;
1921 ssid->max_oper_chwidth = params->max_oper_chwidth;
1922 ssid->vht_center_freq2 = params->vht_center_freq2;
1923 ssid->he = params->he;
1924 ssid->ssid = os_zalloc(params->ssid_len + 1);
1925 if (ssid->ssid) {
1926 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1927 ssid->ssid_len = params->ssid_len;
1928 }
1929 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1930 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1931 ssid->proto = WPA_PROTO_RSN;
1932 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1933 ssid->group_cipher = WPA_CIPHER_CCMP;
1934 if (params->freq > 56160) {
1935 /*
1936 * Enable GCMP instead of CCMP as pairwise_cipher and
1937 * group_cipher in 60 GHz.
1938 */
1939 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1940 ssid->group_cipher = WPA_CIPHER_GCMP;
1941 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1942 ssid->pbss = 1;
1943 }
1944 if (os_strlen(params->passphrase) > 0) {
1945 ssid->passphrase = os_strdup(params->passphrase);
1946 if (ssid->passphrase == NULL) {
1947 wpa_msg_global(wpa_s, MSG_ERROR,
1948 "P2P: Failed to copy passphrase for GO");
1949 wpa_config_remove_network(wpa_s->conf, ssid->id);
1950 return;
1951 }
1952 } else
1953 ssid->passphrase = NULL;
1954 ssid->psk_set = params->psk_set;
1955 if (ssid->psk_set)
1956 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1957 else if (ssid->passphrase)
1958 wpa_config_update_psk(ssid);
1959 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1960
1961 wpa_s->ap_configured_cb = p2p_go_configured;
1962 wpa_s->ap_configured_cb_ctx = wpa_s;
1963 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1964 wpa_s->scan_req = NORMAL_SCAN_REQ;
1965 wpa_s->connect_without_scan = ssid;
1966 wpa_s->reassociate = 1;
1967 wpa_s->disconnected = 0;
1968 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1969 "start GO)");
1970 wpa_supplicant_req_scan(wpa_s, 0, 0);
1971 }
1972
1973
wpas_p2p_clone_config(struct wpa_supplicant * dst,const struct wpa_supplicant * src)1974 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1975 const struct wpa_supplicant *src)
1976 {
1977 struct wpa_config *d;
1978 const struct wpa_config *s;
1979
1980 d = dst->conf;
1981 s = src->conf;
1982
1983 #define C(n) \
1984 do { \
1985 if (s->n && !d->n) \
1986 d->n = os_strdup(s->n); \
1987 } while (0)
1988
1989 C(device_name);
1990 C(manufacturer);
1991 C(model_name);
1992 C(model_number);
1993 C(serial_number);
1994 C(config_methods);
1995 #undef C
1996
1997 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1998 os_memcpy(d->sec_device_type, s->sec_device_type,
1999 sizeof(d->sec_device_type));
2000 d->num_sec_device_types = s->num_sec_device_types;
2001
2002 d->p2p_group_idle = s->p2p_group_idle;
2003 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
2004 d->p2p_intra_bss = s->p2p_intra_bss;
2005 d->persistent_reconnect = s->persistent_reconnect;
2006 d->max_num_sta = s->max_num_sta;
2007 d->pbc_in_m1 = s->pbc_in_m1;
2008 d->ignore_old_scan_res = s->ignore_old_scan_res;
2009 d->beacon_int = s->beacon_int;
2010 d->dtim_period = s->dtim_period;
2011 d->p2p_go_ctwindow = s->p2p_go_ctwindow;
2012 d->disassoc_low_ack = s->disassoc_low_ack;
2013 d->disable_scan_offload = s->disable_scan_offload;
2014 d->passive_scan = s->passive_scan;
2015
2016 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2017 !d->wps_nfc_pw_from_config) {
2018 wpabuf_free(d->wps_nfc_dh_privkey);
2019 wpabuf_free(d->wps_nfc_dh_pubkey);
2020 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2021 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2022 }
2023 d->p2p_cli_probe = s->p2p_cli_probe;
2024 d->go_interworking = s->go_interworking;
2025 d->go_access_network_type = s->go_access_network_type;
2026 d->go_internet = s->go_internet;
2027 d->go_venue_group = s->go_venue_group;
2028 d->go_venue_type = s->go_venue_type;
2029 }
2030
2031
wpas_p2p_get_group_ifname(struct wpa_supplicant * wpa_s,char * ifname,size_t len)2032 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2033 char *ifname, size_t len)
2034 {
2035 char *ifname_ptr = wpa_s->ifname;
2036
2037 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2038 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2039 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2040 }
2041
2042 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2043 if (os_strlen(ifname) >= IFNAMSIZ &&
2044 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2045 int res;
2046
2047 /* Try to avoid going over the IFNAMSIZ length limit */
2048 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2049 if (os_snprintf_error(len, res) && len)
2050 ifname[len - 1] = '\0';
2051 }
2052 }
2053
2054
wpas_p2p_add_group_interface(struct wpa_supplicant * wpa_s,enum wpa_driver_if_type type)2055 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2056 enum wpa_driver_if_type type)
2057 {
2058 char ifname[120], force_ifname[120];
2059
2060 if (wpa_s->pending_interface_name[0]) {
2061 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2062 "- skip creation of a new one");
2063 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2064 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2065 "unknown?! ifname='%s'",
2066 wpa_s->pending_interface_name);
2067 return -1;
2068 }
2069 return 0;
2070 }
2071
2072 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2073 force_ifname[0] = '\0';
2074
2075 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2076 ifname);
2077 wpa_s->p2p_group_idx++;
2078
2079 wpa_s->pending_interface_type = type;
2080 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2081 wpa_s->pending_interface_addr, NULL) < 0) {
2082 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2083 "interface");
2084 return -1;
2085 }
2086
2087 if (wpa_s->conf->p2p_interface_random_mac_addr) {
2088 random_mac_addr(wpa_s->pending_interface_addr);
2089 wpa_printf(MSG_DEBUG, "P2P: Generate random MAC address " MACSTR
2090 " for the group",
2091 MAC2STR(wpa_s->pending_interface_addr));
2092 }
2093
2094 if (force_ifname[0]) {
2095 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2096 force_ifname);
2097 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2098 sizeof(wpa_s->pending_interface_name));
2099 } else
2100 os_strlcpy(wpa_s->pending_interface_name, ifname,
2101 sizeof(wpa_s->pending_interface_name));
2102 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2103 MACSTR, wpa_s->pending_interface_name,
2104 MAC2STR(wpa_s->pending_interface_addr));
2105
2106 return 0;
2107 }
2108
2109
wpas_p2p_remove_pending_group_interface(struct wpa_supplicant * wpa_s)2110 static void wpas_p2p_remove_pending_group_interface(
2111 struct wpa_supplicant *wpa_s)
2112 {
2113 if (!wpa_s->pending_interface_name[0] ||
2114 is_zero_ether_addr(wpa_s->pending_interface_addr))
2115 return; /* No pending virtual interface */
2116
2117 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2118 wpa_s->pending_interface_name);
2119 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2120 wpa_s->pending_interface_name);
2121 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2122 wpa_s->pending_interface_name[0] = '\0';
2123 wpa_s->global->pending_group_iface_for_p2ps = 0;
2124 }
2125
2126
2127 static struct wpa_supplicant *
wpas_p2p_init_group_interface(struct wpa_supplicant * wpa_s,int go)2128 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2129 {
2130 struct wpa_interface iface;
2131 struct wpa_supplicant *group_wpa_s;
2132
2133 if (!wpa_s->pending_interface_name[0]) {
2134 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2135 if (!wpas_p2p_create_iface(wpa_s))
2136 return NULL;
2137 /*
2138 * Something has forced us to remove the pending interface; try
2139 * to create a new one and hope for the best that we will get
2140 * the same local address.
2141 */
2142 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2143 WPA_IF_P2P_CLIENT) < 0)
2144 return NULL;
2145 }
2146
2147 os_memset(&iface, 0, sizeof(iface));
2148 iface.ifname = wpa_s->pending_interface_name;
2149 iface.driver = wpa_s->driver->name;
2150 if (wpa_s->conf->ctrl_interface == NULL &&
2151 wpa_s->parent != wpa_s &&
2152 wpa_s->p2p_mgmt &&
2153 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2154 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2155 else
2156 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2157 iface.driver_param = wpa_s->conf->driver_param;
2158 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2159 if (group_wpa_s == NULL) {
2160 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2161 "wpa_supplicant interface");
2162 return NULL;
2163 }
2164 wpa_s->pending_interface_name[0] = '\0';
2165 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2166 P2P_GROUP_INTERFACE_CLIENT;
2167 wpa_s->global->p2p_group_formation = group_wpa_s;
2168 wpa_s->global->pending_group_iface_for_p2ps = 0;
2169
2170 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2171
2172 if (wpa_s->conf->p2p_interface_random_mac_addr) {
2173 if (wpa_drv_set_mac_addr(group_wpa_s,
2174 wpa_s->pending_interface_addr) < 0) {
2175 wpa_msg(group_wpa_s, MSG_INFO,
2176 "Failed to set random MAC address");
2177 wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2178 0);
2179 return NULL;
2180 }
2181
2182 if (wpa_supplicant_update_mac_addr(group_wpa_s) < 0) {
2183 wpa_msg(group_wpa_s, MSG_INFO,
2184 "Could not update MAC address information");
2185 wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2186 0);
2187 return NULL;
2188 }
2189
2190 wpa_printf(MSG_DEBUG, "P2P: Using random MAC address " MACSTR
2191 " for the group",
2192 MAC2STR(wpa_s->pending_interface_addr));
2193 }
2194
2195 return group_wpa_s;
2196 }
2197
2198
wpas_p2p_group_formation_timeout(void * eloop_ctx,void * timeout_ctx)2199 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2200 void *timeout_ctx)
2201 {
2202 struct wpa_supplicant *wpa_s = eloop_ctx;
2203 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2204 wpas_p2p_group_formation_failed(wpa_s, 0);
2205 }
2206
2207
wpas_p2p_group_formation_failed(struct wpa_supplicant * wpa_s,int already_deleted)2208 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2209 int already_deleted)
2210 {
2211 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2212 wpa_s->p2pdev, NULL);
2213 if (wpa_s->global->p2p)
2214 p2p_group_formation_failed(wpa_s->global->p2p);
2215 wpas_group_formation_completed(wpa_s, 0, already_deleted);
2216 }
2217
2218
wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant * wpa_s)2219 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2220 {
2221 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2222 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2223 wpa_s->p2pdev, NULL);
2224 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2225 wpa_s->p2pdev, NULL);
2226 wpa_s->global->p2p_fail_on_wps_complete = 0;
2227 }
2228
2229
wpas_p2p_ap_setup_failed(struct wpa_supplicant * wpa_s)2230 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2231 {
2232 if (wpa_s->global->p2p_group_formation != wpa_s)
2233 return;
2234 /* Speed up group formation timeout since this cannot succeed */
2235 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2236 wpa_s->p2pdev, NULL);
2237 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2238 wpa_s->p2pdev, NULL);
2239 }
2240
2241
wpas_go_neg_completed(void * ctx,struct p2p_go_neg_results * res)2242 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2243 {
2244 struct wpa_supplicant *wpa_s = ctx;
2245 struct wpa_supplicant *group_wpa_s;
2246
2247 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2248 wpa_drv_cancel_remain_on_channel(wpa_s);
2249 wpa_s->off_channel_freq = 0;
2250 wpa_s->roc_waiting_drv_freq = 0;
2251 }
2252
2253 if (res->status) {
2254 wpa_msg_global(wpa_s, MSG_INFO,
2255 P2P_EVENT_GO_NEG_FAILURE "status=%d",
2256 res->status);
2257 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2258 wpas_p2p_remove_pending_group_interface(wpa_s);
2259 return;
2260 }
2261
2262 if (!res->role_go) {
2263 /* Inform driver of the operating channel of GO. */
2264 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2265 }
2266
2267 if (wpa_s->p2p_go_ht40)
2268 res->ht40 = 1;
2269 if (wpa_s->p2p_go_vht)
2270 res->vht = 1;
2271 if (wpa_s->p2p_go_he)
2272 res->he = 1;
2273 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2274 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2275
2276 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2277 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2278 " wps_method=%s",
2279 res->role_go ? "GO" : "client", res->freq, res->ht40,
2280 MAC2STR(res->peer_device_addr),
2281 MAC2STR(res->peer_interface_addr),
2282 p2p_wps_method_text(res->wps_method));
2283 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2284
2285 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2286 struct wpa_ssid *ssid;
2287 ssid = wpa_config_get_network(wpa_s->conf,
2288 wpa_s->p2p_persistent_id);
2289 if (ssid && ssid->disabled == 2 &&
2290 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2291 size_t len = os_strlen(ssid->passphrase);
2292 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2293 "on requested persistent group");
2294 os_memcpy(res->passphrase, ssid->passphrase, len);
2295 res->passphrase[len] = '\0';
2296 }
2297 }
2298
2299 if (wpa_s->create_p2p_iface) {
2300 group_wpa_s =
2301 wpas_p2p_init_group_interface(wpa_s, res->role_go);
2302 if (group_wpa_s == NULL) {
2303 wpas_p2p_remove_pending_group_interface(wpa_s);
2304 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2305 wpa_s, NULL);
2306 wpas_p2p_group_formation_failed(wpa_s, 1);
2307 return;
2308 }
2309 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2310 wpa_s->pending_interface_name[0] = '\0';
2311 } else {
2312 group_wpa_s = wpa_s->parent;
2313 wpa_s->global->p2p_group_formation = group_wpa_s;
2314 if (group_wpa_s != wpa_s)
2315 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2316 }
2317
2318 group_wpa_s->p2p_in_provisioning = 1;
2319 group_wpa_s->p2pdev = wpa_s;
2320 if (group_wpa_s != wpa_s) {
2321 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2322 sizeof(group_wpa_s->p2p_pin));
2323 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2324 }
2325 if (res->role_go) {
2326 wpas_start_wps_go(group_wpa_s, res, 1);
2327 } else {
2328 os_get_reltime(&group_wpa_s->scan_min_time);
2329 wpas_start_wps_enrollee(group_wpa_s, res);
2330 }
2331
2332 wpa_s->p2p_long_listen = 0;
2333 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2334
2335 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2336 eloop_register_timeout(15 + res->peer_config_timeout / 100,
2337 (res->peer_config_timeout % 100) * 10000,
2338 wpas_p2p_group_formation_timeout, wpa_s, NULL);
2339 }
2340
2341
wpas_go_neg_req_rx(void * ctx,const u8 * src,u16 dev_passwd_id,u8 go_intent)2342 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2343 u8 go_intent)
2344 {
2345 struct wpa_supplicant *wpa_s = ctx;
2346 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2347 " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2348 dev_passwd_id, go_intent);
2349
2350 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2351 }
2352
2353
wpas_dev_found(void * ctx,const u8 * addr,const struct p2p_peer_info * info,int new_device)2354 static void wpas_dev_found(void *ctx, const u8 *addr,
2355 const struct p2p_peer_info *info,
2356 int new_device)
2357 {
2358 #ifndef CONFIG_NO_STDOUT_DEBUG
2359 struct wpa_supplicant *wpa_s = ctx;
2360 char devtype[WPS_DEV_TYPE_BUFSIZE];
2361 char *wfd_dev_info_hex = NULL;
2362
2363 #ifdef CONFIG_WIFI_DISPLAY
2364 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2365 WFD_SUBELEM_DEVICE_INFO);
2366 #endif /* CONFIG_WIFI_DISPLAY */
2367
2368 if (info->p2ps_instance) {
2369 char str[256];
2370 const u8 *buf = wpabuf_head(info->p2ps_instance);
2371 size_t len = wpabuf_len(info->p2ps_instance);
2372
2373 while (len) {
2374 u32 id;
2375 u16 methods;
2376 u8 str_len;
2377
2378 if (len < 4 + 2 + 1)
2379 break;
2380 id = WPA_GET_LE32(buf);
2381 buf += sizeof(u32);
2382 methods = WPA_GET_BE16(buf);
2383 buf += sizeof(u16);
2384 str_len = *buf++;
2385 if (str_len > len - 4 - 2 - 1)
2386 break;
2387 os_memcpy(str, buf, str_len);
2388 str[str_len] = '\0';
2389 buf += str_len;
2390 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2391
2392 wpa_msg_global(wpa_s, MSG_INFO,
2393 P2P_EVENT_DEVICE_FOUND MACSTR
2394 " p2p_dev_addr=" MACSTR
2395 " pri_dev_type=%s name='%s'"
2396 " config_methods=0x%x"
2397 " dev_capab=0x%x"
2398 " group_capab=0x%x"
2399 " adv_id=%x asp_svc=%s%s",
2400 MAC2STR(addr),
2401 MAC2STR(info->p2p_device_addr),
2402 wps_dev_type_bin2str(
2403 info->pri_dev_type,
2404 devtype, sizeof(devtype)),
2405 info->device_name, methods,
2406 info->dev_capab, info->group_capab,
2407 id, str,
2408 info->vendor_elems ?
2409 " vendor_elems=1" : "");
2410 }
2411 goto done;
2412 }
2413
2414 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2415 " p2p_dev_addr=" MACSTR
2416 " pri_dev_type=%s name='%s' config_methods=0x%x "
2417 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2418 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2419 wps_dev_type_bin2str(info->pri_dev_type, devtype,
2420 sizeof(devtype)),
2421 info->device_name, info->config_methods,
2422 info->dev_capab, info->group_capab,
2423 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2424 wfd_dev_info_hex ? wfd_dev_info_hex : "",
2425 info->vendor_elems ? " vendor_elems=1" : "",
2426 new_device);
2427
2428 done:
2429 os_free(wfd_dev_info_hex);
2430 #endif /* CONFIG_NO_STDOUT_DEBUG */
2431
2432 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2433 }
2434
2435
wpas_dev_lost(void * ctx,const u8 * dev_addr)2436 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2437 {
2438 struct wpa_supplicant *wpa_s = ctx;
2439
2440 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2441 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2442
2443 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2444 }
2445
2446
wpas_find_stopped(void * ctx)2447 static void wpas_find_stopped(void *ctx)
2448 {
2449 struct wpa_supplicant *wpa_s = ctx;
2450
2451 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2452 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2453
2454 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2455 wpas_notify_p2p_find_stopped(wpa_s);
2456 }
2457
2458
2459 struct wpas_p2p_listen_work {
2460 unsigned int freq;
2461 unsigned int duration;
2462 struct wpabuf *probe_resp_ie;
2463 };
2464
2465
wpas_p2p_listen_work_free(struct wpas_p2p_listen_work * lwork)2466 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2467 {
2468 if (lwork == NULL)
2469 return;
2470 wpabuf_free(lwork->probe_resp_ie);
2471 os_free(lwork);
2472 }
2473
2474
wpas_p2p_listen_work_done(struct wpa_supplicant * wpa_s)2475 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2476 {
2477 struct wpas_p2p_listen_work *lwork;
2478
2479 if (!wpa_s->p2p_listen_work)
2480 return;
2481
2482 lwork = wpa_s->p2p_listen_work->ctx;
2483 wpas_p2p_listen_work_free(lwork);
2484 radio_work_done(wpa_s->p2p_listen_work);
2485 wpa_s->p2p_listen_work = NULL;
2486 }
2487
2488
wpas_start_listen_cb(struct wpa_radio_work * work,int deinit)2489 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2490 {
2491 struct wpa_supplicant *wpa_s = work->wpa_s;
2492 struct wpas_p2p_listen_work *lwork = work->ctx;
2493 unsigned int duration;
2494
2495 if (deinit) {
2496 if (work->started) {
2497 wpa_s->p2p_listen_work = NULL;
2498 wpas_stop_listen(wpa_s);
2499 }
2500 wpas_p2p_listen_work_free(lwork);
2501 return;
2502 }
2503
2504 wpa_s->p2p_listen_work = work;
2505
2506 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2507
2508 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2509 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2510 "report received Probe Request frames");
2511 wpas_p2p_listen_work_done(wpa_s);
2512 return;
2513 }
2514
2515 wpa_s->pending_listen_freq = lwork->freq;
2516 wpa_s->pending_listen_duration = lwork->duration;
2517
2518 duration = lwork->duration;
2519 #ifdef CONFIG_TESTING_OPTIONS
2520 if (wpa_s->extra_roc_dur) {
2521 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2522 duration, duration + wpa_s->extra_roc_dur);
2523 duration += wpa_s->extra_roc_dur;
2524 }
2525 #endif /* CONFIG_TESTING_OPTIONS */
2526
2527 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2528 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2529 "to remain on channel (%u MHz) for Listen "
2530 "state", lwork->freq);
2531 wpas_p2p_listen_work_done(wpa_s);
2532 wpa_s->pending_listen_freq = 0;
2533 return;
2534 }
2535 wpa_s->off_channel_freq = 0;
2536 wpa_s->roc_waiting_drv_freq = lwork->freq;
2537 }
2538
2539
wpas_start_listen(void * ctx,unsigned int freq,unsigned int duration,const struct wpabuf * probe_resp_ie)2540 static int wpas_start_listen(void *ctx, unsigned int freq,
2541 unsigned int duration,
2542 const struct wpabuf *probe_resp_ie)
2543 {
2544 struct wpa_supplicant *wpa_s = ctx;
2545 struct wpas_p2p_listen_work *lwork;
2546
2547 if (wpa_s->p2p_listen_work) {
2548 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2549 return -1;
2550 }
2551
2552 lwork = os_zalloc(sizeof(*lwork));
2553 if (lwork == NULL)
2554 return -1;
2555 lwork->freq = freq;
2556 lwork->duration = duration;
2557 if (probe_resp_ie) {
2558 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2559 if (lwork->probe_resp_ie == NULL) {
2560 wpas_p2p_listen_work_free(lwork);
2561 return -1;
2562 }
2563 }
2564
2565 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2566 lwork) < 0) {
2567 wpas_p2p_listen_work_free(lwork);
2568 return -1;
2569 }
2570
2571 return 0;
2572 }
2573
2574
wpas_stop_listen(void * ctx)2575 static void wpas_stop_listen(void *ctx)
2576 {
2577 struct wpa_supplicant *wpa_s = ctx;
2578 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2579 wpa_drv_cancel_remain_on_channel(wpa_s);
2580 wpa_s->off_channel_freq = 0;
2581 wpa_s->roc_waiting_drv_freq = 0;
2582 }
2583 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2584
2585 /*
2586 * Don't cancel Probe Request RX reporting for a connected P2P Client
2587 * handling Probe Request frames.
2588 */
2589 if (!wpa_s->p2p_cli_probe)
2590 wpa_drv_probe_req_report(wpa_s, 0);
2591
2592 wpas_p2p_listen_work_done(wpa_s);
2593 }
2594
2595
wpas_send_probe_resp(void * ctx,const struct wpabuf * buf,unsigned int freq)2596 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2597 unsigned int freq)
2598 {
2599 struct wpa_supplicant *wpa_s = ctx;
2600 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2601 freq);
2602 }
2603
2604
wpas_prov_disc_local_display(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params,unsigned int generated_pin)2605 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2606 const u8 *peer, const char *params,
2607 unsigned int generated_pin)
2608 {
2609 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2610 " %08d%s", MAC2STR(peer), generated_pin, params);
2611 }
2612
2613
wpas_prov_disc_local_keypad(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params)2614 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2615 const u8 *peer, const char *params)
2616 {
2617 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2618 "%s", MAC2STR(peer), params);
2619 }
2620
2621
wpas_prov_disc_req(void * ctx,const u8 * peer,u16 config_methods,const u8 * dev_addr,const u8 * pri_dev_type,const char * dev_name,u16 supp_config_methods,u8 dev_capab,u8 group_capab,const u8 * group_id,size_t group_id_len)2622 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2623 const u8 *dev_addr, const u8 *pri_dev_type,
2624 const char *dev_name, u16 supp_config_methods,
2625 u8 dev_capab, u8 group_capab, const u8 *group_id,
2626 size_t group_id_len)
2627 {
2628 struct wpa_supplicant *wpa_s = ctx;
2629 char devtype[WPS_DEV_TYPE_BUFSIZE];
2630 char params[300];
2631 u8 empty_dev_type[8];
2632 unsigned int generated_pin = 0;
2633 struct wpa_supplicant *group = NULL;
2634 int res;
2635
2636 if (group_id) {
2637 for (group = wpa_s->global->ifaces; group; group = group->next)
2638 {
2639 struct wpa_ssid *s = group->current_ssid;
2640 if (s != NULL &&
2641 s->mode == WPAS_MODE_P2P_GO &&
2642 group_id_len - ETH_ALEN == s->ssid_len &&
2643 os_memcmp(group_id + ETH_ALEN, s->ssid,
2644 s->ssid_len) == 0)
2645 break;
2646 }
2647 }
2648
2649 if (pri_dev_type == NULL) {
2650 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2651 pri_dev_type = empty_dev_type;
2652 }
2653 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2654 " pri_dev_type=%s name='%s' config_methods=0x%x "
2655 "dev_capab=0x%x group_capab=0x%x%s%s",
2656 MAC2STR(dev_addr),
2657 wps_dev_type_bin2str(pri_dev_type, devtype,
2658 sizeof(devtype)),
2659 dev_name, supp_config_methods, dev_capab, group_capab,
2660 group ? " group=" : "",
2661 group ? group->ifname : "");
2662 if (os_snprintf_error(sizeof(params), res))
2663 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2664 params[sizeof(params) - 1] = '\0';
2665
2666 if (config_methods & WPS_CONFIG_DISPLAY) {
2667 if (wps_generate_pin(&generated_pin) < 0) {
2668 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2669 wpas_notify_p2p_provision_discovery(
2670 wpa_s, peer, 0 /* response */,
2671 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2672 return;
2673 }
2674 wpas_prov_disc_local_display(wpa_s, peer, params,
2675 generated_pin);
2676 } else if (config_methods & WPS_CONFIG_KEYPAD)
2677 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2678 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2679 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2680 MACSTR "%s", MAC2STR(peer), params);
2681
2682 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2683 P2P_PROV_DISC_SUCCESS,
2684 config_methods, generated_pin);
2685 }
2686
2687
wpas_prov_disc_resp(void * ctx,const u8 * peer,u16 config_methods)2688 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2689 {
2690 struct wpa_supplicant *wpa_s = ctx;
2691 unsigned int generated_pin = 0;
2692 char params[20];
2693
2694 if (wpa_s->pending_pd_before_join &&
2695 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2696 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2697 wpa_s->pending_pd_before_join = 0;
2698 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2699 "join-existing-group operation");
2700 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2701 return;
2702 }
2703
2704 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2705 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2706 int res;
2707
2708 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2709 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2710 if (os_snprintf_error(sizeof(params), res))
2711 params[sizeof(params) - 1] = '\0';
2712 } else
2713 params[0] = '\0';
2714
2715 if (config_methods & WPS_CONFIG_DISPLAY)
2716 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2717 else if (config_methods & WPS_CONFIG_KEYPAD) {
2718 if (wps_generate_pin(&generated_pin) < 0) {
2719 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2720 wpas_notify_p2p_provision_discovery(
2721 wpa_s, peer, 0 /* response */,
2722 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2723 return;
2724 }
2725 wpas_prov_disc_local_display(wpa_s, peer, params,
2726 generated_pin);
2727 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2728 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2729 MACSTR "%s", MAC2STR(peer), params);
2730
2731 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2732 P2P_PROV_DISC_SUCCESS,
2733 config_methods, generated_pin);
2734 }
2735
2736
wpas_prov_disc_fail(void * ctx,const u8 * peer,enum p2p_prov_disc_status status,u32 adv_id,const u8 * adv_mac,const char * deferred_session_resp)2737 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2738 enum p2p_prov_disc_status status,
2739 u32 adv_id, const u8 *adv_mac,
2740 const char *deferred_session_resp)
2741 {
2742 struct wpa_supplicant *wpa_s = ctx;
2743
2744 if (wpa_s->p2p_fallback_to_go_neg) {
2745 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2746 "failed - fall back to GO Negotiation");
2747 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2748 P2P_EVENT_FALLBACK_TO_GO_NEG
2749 "reason=PD-failed");
2750 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2751 return;
2752 }
2753
2754 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2755 wpa_s->pending_pd_before_join = 0;
2756 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2757 "join-existing-group operation (no ACK for PD "
2758 "Req attempts)");
2759 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2760 return;
2761 }
2762
2763 if (adv_id && adv_mac && deferred_session_resp) {
2764 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2765 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2766 " deferred_session_resp='%s'",
2767 MAC2STR(peer), status, adv_id,
2768 deferred_session_resp);
2769 } else if (adv_id && adv_mac) {
2770 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2771 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2772 MAC2STR(peer), status, adv_id);
2773 } else {
2774 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2775 " p2p_dev_addr=" MACSTR " status=%d",
2776 MAC2STR(peer), status);
2777 }
2778
2779 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2780 status, 0, 0);
2781 }
2782
2783
freq_included(struct wpa_supplicant * wpa_s,const struct p2p_channels * channels,unsigned int freq)2784 static int freq_included(struct wpa_supplicant *wpa_s,
2785 const struct p2p_channels *channels,
2786 unsigned int freq)
2787 {
2788 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2789 wpas_p2p_go_is_peer_freq(wpa_s, freq))
2790 return 1;
2791 return 0;
2792 }
2793
2794
wpas_p2p_go_update_common_freqs(struct wpa_supplicant * wpa_s)2795 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2796 {
2797 unsigned int num = P2P_MAX_CHANNELS;
2798 int *common_freqs;
2799 int ret;
2800
2801 p2p_go_dump_common_freqs(wpa_s);
2802 common_freqs = os_calloc(num, sizeof(int));
2803 if (!common_freqs)
2804 return;
2805
2806 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2807 if (ret < 0) {
2808 wpa_dbg(wpa_s, MSG_DEBUG,
2809 "P2P: Failed to get group common freqs");
2810 os_free(common_freqs);
2811 return;
2812 }
2813
2814 os_free(wpa_s->p2p_group_common_freqs);
2815 wpa_s->p2p_group_common_freqs = common_freqs;
2816 wpa_s->p2p_group_common_freqs_num = num;
2817 p2p_go_dump_common_freqs(wpa_s);
2818 }
2819
2820
2821 /*
2822 * Check if the given frequency is one of the possible operating frequencies
2823 * set after the completion of the GO Negotiation.
2824 */
wpas_p2p_go_is_peer_freq(struct wpa_supplicant * wpa_s,int freq)2825 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2826 {
2827 unsigned int i;
2828
2829 p2p_go_dump_common_freqs(wpa_s);
2830
2831 /* assume no restrictions */
2832 if (!wpa_s->p2p_group_common_freqs_num)
2833 return 1;
2834
2835 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2836 if (wpa_s->p2p_group_common_freqs[i] == freq)
2837 return 1;
2838 }
2839 return 0;
2840 }
2841
2842
wpas_sta_check_ecsa(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2843 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2844 struct sta_info *sta, void *ctx)
2845 {
2846 int *ecsa_support = ctx;
2847
2848 *ecsa_support &= sta->ecsa_supported;
2849
2850 return 0;
2851 }
2852
2853
2854 /* Check if all the peers support eCSA */
wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant * wpa_s)2855 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2856 {
2857 int ecsa_support = 1;
2858
2859 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2860 &ecsa_support);
2861
2862 return ecsa_support;
2863 }
2864
2865
2866 /**
2867 * Pick the best frequency to use from all the currently used frequencies.
2868 */
wpas_p2p_pick_best_used_freq(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)2869 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2870 struct wpa_used_freq_data *freqs,
2871 unsigned int num)
2872 {
2873 unsigned int i, c;
2874
2875 /* find a candidate freq that is supported by P2P */
2876 for (c = 0; c < num; c++)
2877 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2878 break;
2879
2880 if (c == num)
2881 return 0;
2882
2883 /* once we have a candidate, try to find a 'better' one */
2884 for (i = c + 1; i < num; i++) {
2885 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2886 continue;
2887
2888 /*
2889 * 1. Infrastructure station interfaces have higher preference.
2890 * 2. P2P Clients have higher preference.
2891 * 3. All others.
2892 */
2893 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2894 c = i;
2895 break;
2896 }
2897
2898 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2899 c = i;
2900 }
2901 return freqs[c].freq;
2902 }
2903
2904
wpas_invitation_process(void * ctx,const u8 * sa,const u8 * bssid,const u8 * go_dev_addr,const u8 * ssid,size_t ssid_len,int * go,u8 * group_bssid,int * force_freq,int persistent_group,const struct p2p_channels * channels,int dev_pw_id)2905 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2906 const u8 *go_dev_addr, const u8 *ssid,
2907 size_t ssid_len, int *go, u8 *group_bssid,
2908 int *force_freq, int persistent_group,
2909 const struct p2p_channels *channels,
2910 int dev_pw_id)
2911 {
2912 struct wpa_supplicant *wpa_s = ctx;
2913 struct wpa_ssid *s;
2914 struct wpa_used_freq_data *freqs;
2915 struct wpa_supplicant *grp;
2916 int best_freq;
2917
2918 if (!persistent_group) {
2919 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2920 " to join an active group (SSID: %s)",
2921 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2922 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2923 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2924 == 0 ||
2925 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2926 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2927 "authorized invitation");
2928 goto accept_inv;
2929 }
2930
2931 #ifdef CONFIG_WPS_NFC
2932 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2933 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2934 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2935 wpa_s->p2p_wps_method = WPS_NFC;
2936 wpa_s->pending_join_wps_method = WPS_NFC;
2937 os_memcpy(wpa_s->pending_join_dev_addr,
2938 go_dev_addr, ETH_ALEN);
2939 os_memcpy(wpa_s->pending_join_iface_addr,
2940 bssid, ETH_ALEN);
2941 goto accept_inv;
2942 }
2943 #endif /* CONFIG_WPS_NFC */
2944
2945 /*
2946 * Do not accept the invitation automatically; notify user and
2947 * request approval.
2948 */
2949 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2950 }
2951
2952 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2953 if (grp) {
2954 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2955 "running persistent group");
2956 if (*go)
2957 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2958 goto accept_inv;
2959 }
2960
2961 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2962 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2963 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2964 "invitation to re-invoke a persistent group");
2965 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2966 } else if (!wpa_s->conf->persistent_reconnect)
2967 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2968
2969 for (s = wpa_s->conf->ssid; s; s = s->next) {
2970 if (s->disabled == 2 &&
2971 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2972 s->ssid_len == ssid_len &&
2973 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2974 break;
2975 }
2976
2977 if (!s) {
2978 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2979 " requested reinvocation of an unknown group",
2980 MAC2STR(sa));
2981 return P2P_SC_FAIL_UNKNOWN_GROUP;
2982 }
2983
2984 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2985 *go = 1;
2986 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2987 wpa_printf(MSG_DEBUG, "P2P: The only available "
2988 "interface is already in use - reject "
2989 "invitation");
2990 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2991 }
2992 if (wpa_s->p2p_mgmt)
2993 os_memcpy(group_bssid, wpa_s->parent->own_addr,
2994 ETH_ALEN);
2995 else
2996 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2997 } else if (s->mode == WPAS_MODE_P2P_GO) {
2998 *go = 1;
2999 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3000 {
3001 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3002 "interface address for the group");
3003 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3004 }
3005 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3006 ETH_ALEN);
3007 }
3008
3009 accept_inv:
3010 wpas_p2p_set_own_freq_preference(wpa_s, 0);
3011
3012 best_freq = 0;
3013 freqs = os_calloc(wpa_s->num_multichan_concurrent,
3014 sizeof(struct wpa_used_freq_data));
3015 if (freqs) {
3016 int num_channels = wpa_s->num_multichan_concurrent;
3017 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3018 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3019 os_free(freqs);
3020 }
3021
3022 /* Get one of the frequencies currently in use */
3023 if (best_freq > 0) {
3024 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3025 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3026
3027 if (wpa_s->num_multichan_concurrent < 2 ||
3028 wpas_p2p_num_unused_channels(wpa_s) < 1) {
3029 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3030 *force_freq = best_freq;
3031 }
3032 }
3033
3034 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3035 wpas_p2p_num_unused_channels(wpa_s) > 0) {
3036 if (*go == 0) {
3037 /* We are the client */
3038 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3039 "running a GO but we are capable of MCC, "
3040 "figure out the best channel to use");
3041 *force_freq = 0;
3042 } else if (!freq_included(wpa_s, channels, *force_freq)) {
3043 /* We are the GO, and *force_freq is not in the
3044 * intersection */
3045 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3046 "in intersection but we are capable of MCC, "
3047 "figure out the best channel to use",
3048 *force_freq);
3049 *force_freq = 0;
3050 }
3051 }
3052
3053 return P2P_SC_SUCCESS;
3054 }
3055
3056
wpas_invitation_received(void * ctx,const u8 * sa,const u8 * bssid,const u8 * ssid,size_t ssid_len,const u8 * go_dev_addr,u8 status,int op_freq)3057 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3058 const u8 *ssid, size_t ssid_len,
3059 const u8 *go_dev_addr, u8 status,
3060 int op_freq)
3061 {
3062 struct wpa_supplicant *wpa_s = ctx;
3063 struct wpa_ssid *s;
3064
3065 for (s = wpa_s->conf->ssid; s; s = s->next) {
3066 if (s->disabled == 2 &&
3067 s->ssid_len == ssid_len &&
3068 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3069 break;
3070 }
3071
3072 if (status == P2P_SC_SUCCESS) {
3073 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3074 " was accepted; op_freq=%d MHz, SSID=%s",
3075 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3076 if (s) {
3077 int go = s->mode == WPAS_MODE_P2P_GO;
3078 if (go) {
3079 wpa_msg_global(wpa_s, MSG_INFO,
3080 P2P_EVENT_INVITATION_ACCEPTED
3081 "sa=" MACSTR
3082 " persistent=%d freq=%d",
3083 MAC2STR(sa), s->id, op_freq);
3084 } else {
3085 wpa_msg_global(wpa_s, MSG_INFO,
3086 P2P_EVENT_INVITATION_ACCEPTED
3087 "sa=" MACSTR
3088 " persistent=%d",
3089 MAC2STR(sa), s->id);
3090 }
3091 wpas_p2p_group_add_persistent(
3092 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, 0, NULL,
3093 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3094 1);
3095 } else if (bssid) {
3096 wpa_s->user_initiated_pd = 0;
3097 wpa_msg_global(wpa_s, MSG_INFO,
3098 P2P_EVENT_INVITATION_ACCEPTED
3099 "sa=" MACSTR " go_dev_addr=" MACSTR
3100 " bssid=" MACSTR " unknown-network",
3101 MAC2STR(sa), MAC2STR(go_dev_addr),
3102 MAC2STR(bssid));
3103 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3104 wpa_s->p2p_wps_method, 0, op_freq,
3105 ssid, ssid_len);
3106 }
3107 return;
3108 }
3109
3110 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3111 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3112 " was rejected (status %u)", MAC2STR(sa), status);
3113 return;
3114 }
3115
3116 if (!s) {
3117 if (bssid) {
3118 wpa_msg_global(wpa_s, MSG_INFO,
3119 P2P_EVENT_INVITATION_RECEIVED
3120 "sa=" MACSTR " go_dev_addr=" MACSTR
3121 " bssid=" MACSTR " unknown-network",
3122 MAC2STR(sa), MAC2STR(go_dev_addr),
3123 MAC2STR(bssid));
3124 } else {
3125 wpa_msg_global(wpa_s, MSG_INFO,
3126 P2P_EVENT_INVITATION_RECEIVED
3127 "sa=" MACSTR " go_dev_addr=" MACSTR
3128 " unknown-network",
3129 MAC2STR(sa), MAC2STR(go_dev_addr));
3130 }
3131 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3132 bssid, 0, op_freq);
3133 return;
3134 }
3135
3136 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3137 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3138 "sa=" MACSTR " persistent=%d freq=%d",
3139 MAC2STR(sa), s->id, op_freq);
3140 } else {
3141 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3142 "sa=" MACSTR " persistent=%d",
3143 MAC2STR(sa), s->id);
3144 }
3145 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3146 s->id, op_freq);
3147 }
3148
3149
wpas_remove_persistent_peer(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * peer,int inv)3150 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3151 struct wpa_ssid *ssid,
3152 const u8 *peer, int inv)
3153 {
3154 size_t i;
3155 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3156
3157 if (ssid == NULL)
3158 return;
3159
3160 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3161 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3162 ETH_ALEN) == 0)
3163 break;
3164 }
3165 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3166 if (ssid->mode != WPAS_MODE_P2P_GO &&
3167 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3168 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3169 "due to invitation result", ssid->id);
3170 wpas_notify_network_removed(wpa_s, ssid);
3171 wpa_config_remove_network(wpa_s->conf, ssid->id);
3172 return;
3173 }
3174 return; /* Peer not found in client list */
3175 }
3176
3177 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3178 "group %d client list%s",
3179 MAC2STR(peer), ssid->id,
3180 inv ? " due to invitation result" : "");
3181 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3182 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3183 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3184 ssid->num_p2p_clients--;
3185 if (p2p_wpa_s->conf->update_config &&
3186 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3187 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3188 }
3189
3190
wpas_remove_persistent_client(struct wpa_supplicant * wpa_s,const u8 * peer)3191 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3192 const u8 *peer)
3193 {
3194 struct wpa_ssid *ssid;
3195
3196 wpa_s = wpa_s->global->p2p_invite_group;
3197 if (wpa_s == NULL)
3198 return; /* No known invitation group */
3199 ssid = wpa_s->current_ssid;
3200 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3201 !ssid->p2p_persistent_group)
3202 return; /* Not operating as a GO in persistent group */
3203 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3204 ssid->ssid, ssid->ssid_len);
3205 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3206 }
3207
3208
wpas_invitation_result(void * ctx,int status,const u8 * bssid,const struct p2p_channels * channels,const u8 * peer,int neg_freq,int peer_oper_freq)3209 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3210 const struct p2p_channels *channels,
3211 const u8 *peer, int neg_freq,
3212 int peer_oper_freq)
3213 {
3214 struct wpa_supplicant *wpa_s = ctx;
3215 struct wpa_ssid *ssid;
3216 int freq;
3217
3218 if (bssid) {
3219 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3220 "status=%d " MACSTR,
3221 status, MAC2STR(bssid));
3222 } else {
3223 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3224 "status=%d ", status);
3225 }
3226 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3227
3228 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3229 status, MAC2STR(peer));
3230 if (wpa_s->pending_invite_ssid_id == -1) {
3231 struct wpa_supplicant *group_if =
3232 wpa_s->global->p2p_invite_group;
3233
3234 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3235 wpas_remove_persistent_client(wpa_s, peer);
3236
3237 /*
3238 * Invitation to an active group. If this is successful and we
3239 * are the GO, set the client wait to postpone some concurrent
3240 * operations and to allow provisioning and connection to happen
3241 * more quickly.
3242 */
3243 if (status == P2P_SC_SUCCESS &&
3244 group_if && group_if->current_ssid &&
3245 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3246 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3247 #ifdef CONFIG_TESTING_OPTIONS
3248 if (group_if->p2p_go_csa_on_inv) {
3249 wpa_printf(MSG_DEBUG,
3250 "Testing: force P2P GO CSA after invitation");
3251 eloop_cancel_timeout(
3252 wpas_p2p_reconsider_moving_go,
3253 wpa_s, NULL);
3254 eloop_register_timeout(
3255 0, 50000,
3256 wpas_p2p_reconsider_moving_go,
3257 wpa_s, NULL);
3258 }
3259 #endif /* CONFIG_TESTING_OPTIONS */
3260 }
3261 return;
3262 }
3263
3264 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3265 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3266 "invitation exchange to indicate readiness for "
3267 "re-invocation");
3268 }
3269
3270 if (status != P2P_SC_SUCCESS) {
3271 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3272 ssid = wpa_config_get_network(
3273 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3274 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3275 }
3276 wpas_p2p_remove_pending_group_interface(wpa_s);
3277 return;
3278 }
3279
3280 ssid = wpa_config_get_network(wpa_s->conf,
3281 wpa_s->pending_invite_ssid_id);
3282 if (ssid == NULL) {
3283 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3284 "data matching with invitation");
3285 return;
3286 }
3287
3288 /*
3289 * The peer could have missed our ctrl::ack frame for Invitation
3290 * Response and continue retransmitting the frame. To reduce the
3291 * likelihood of the peer not getting successful TX status for the
3292 * Invitation Response frame, wait a short time here before starting
3293 * the persistent group so that we will remain on the current channel to
3294 * acknowledge any possible retransmission from the peer.
3295 */
3296 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3297 "starting persistent group");
3298 os_sleep(0, 50000);
3299
3300 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3301 freq_included(wpa_s, channels, neg_freq))
3302 freq = neg_freq;
3303 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3304 freq_included(wpa_s, channels, peer_oper_freq))
3305 freq = peer_oper_freq;
3306 else
3307 freq = 0;
3308
3309 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3310 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3311 wpas_p2p_group_add_persistent(wpa_s, ssid,
3312 ssid->mode == WPAS_MODE_P2P_GO,
3313 wpa_s->p2p_persistent_go_freq,
3314 freq,
3315 wpa_s->p2p_go_vht_center_freq2,
3316 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3317 wpa_s->p2p_go_max_oper_chwidth,
3318 wpa_s->p2p_go_he,
3319 channels,
3320 ssid->mode == WPAS_MODE_P2P_GO ?
3321 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3322 0, 1);
3323 }
3324
3325
wpas_p2p_disallowed_freq(struct wpa_global * global,unsigned int freq)3326 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3327 unsigned int freq)
3328 {
3329 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3330 return 1;
3331 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3332 }
3333
3334
wpas_p2p_add_chan(struct p2p_reg_class * reg,u8 chan)3335 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3336 {
3337 reg->channel[reg->channels] = chan;
3338 reg->channels++;
3339 }
3340
3341
wpas_p2p_default_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3342 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3343 struct p2p_channels *chan,
3344 struct p2p_channels *cli_chan)
3345 {
3346 int i, cla = 0;
3347
3348 wpa_s->global->p2p_24ghz_social_channels = 1;
3349
3350 os_memset(cli_chan, 0, sizeof(*cli_chan));
3351
3352 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3353 "band");
3354
3355 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3356 chan->reg_class[cla].reg_class = 81;
3357 chan->reg_class[cla].channels = 0;
3358 for (i = 0; i < 11; i++) {
3359 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3360 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3361 }
3362 if (chan->reg_class[cla].channels)
3363 cla++;
3364
3365 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3366 "band");
3367
3368 /* Operating class 115 - 5 GHz, channels 36-48 */
3369 chan->reg_class[cla].reg_class = 115;
3370 chan->reg_class[cla].channels = 0;
3371 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3372 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3373 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3374 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3375 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3376 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3377 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3378 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3379 if (chan->reg_class[cla].channels)
3380 cla++;
3381
3382 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3383 "band");
3384
3385 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3386 chan->reg_class[cla].reg_class = 124;
3387 chan->reg_class[cla].channels = 0;
3388 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3389 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3390 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3391 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3392 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3393 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3394 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3395 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3396 if (chan->reg_class[cla].channels)
3397 cla++;
3398
3399 chan->reg_classes = cla;
3400 return 0;
3401 }
3402
3403
has_channel(struct wpa_global * global,struct hostapd_hw_modes * mode,u8 chan,int * flags)3404 static int has_channel(struct wpa_global *global,
3405 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3406 {
3407 int i;
3408 unsigned int freq;
3409
3410 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3411 chan * 5;
3412 if (wpas_p2p_disallowed_freq(global, freq))
3413 return NOT_ALLOWED;
3414
3415 for (i = 0; i < mode->num_channels; i++) {
3416 if (mode->channels[i].chan == chan) {
3417 if (flags)
3418 *flags = mode->channels[i].flag;
3419 if (mode->channels[i].flag &
3420 (HOSTAPD_CHAN_DISABLED |
3421 HOSTAPD_CHAN_RADAR))
3422 return NOT_ALLOWED;
3423 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3424 return NO_IR;
3425 return ALLOWED;
3426 }
3427 }
3428
3429 return NOT_ALLOWED;
3430 }
3431
3432
wpas_p2p_get_center_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3433 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3434 struct hostapd_hw_modes *mode,
3435 u8 channel)
3436 {
3437 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3438 size_t i;
3439
3440 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3441 return 0;
3442
3443 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3444 /*
3445 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3446 * so the center channel is 6 channels away from the start/end.
3447 */
3448 if (channel >= center_channels[i] - 6 &&
3449 channel <= center_channels[i] + 6)
3450 return center_channels[i];
3451
3452 return 0;
3453 }
3454
3455
wpas_p2p_verify_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3456 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3457 struct hostapd_hw_modes *mode,
3458 u8 channel, u8 bw)
3459 {
3460 u8 center_chan;
3461 int i, flags;
3462 enum chan_allowed res, ret = ALLOWED;
3463
3464 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3465 if (!center_chan)
3466 return NOT_ALLOWED;
3467 if (center_chan >= 58 && center_chan <= 138)
3468 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3469
3470 /* check all the channels are available */
3471 for (i = 0; i < 4; i++) {
3472 int adj_chan = center_chan - 6 + i * 4;
3473
3474 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3475 if (res == NOT_ALLOWED)
3476 return NOT_ALLOWED;
3477 if (res == NO_IR)
3478 ret = NO_IR;
3479
3480 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3481 return NOT_ALLOWED;
3482 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3483 return NOT_ALLOWED;
3484 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3485 return NOT_ALLOWED;
3486 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3487 return NOT_ALLOWED;
3488 }
3489
3490 return ret;
3491 }
3492
3493
wpas_p2p_get_center_160mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3494 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3495 struct hostapd_hw_modes *mode,
3496 u8 channel)
3497 {
3498 u8 center_channels[] = { 50, 114 };
3499 unsigned int i;
3500
3501 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3502 return 0;
3503
3504 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3505 /*
3506 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3507 * so the center channel is 14 channels away from the start/end.
3508 */
3509 if (channel >= center_channels[i] - 14 &&
3510 channel <= center_channels[i] + 14)
3511 return center_channels[i];
3512
3513 return 0;
3514 }
3515
3516
wpas_p2p_verify_160mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3517 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3518 struct hostapd_hw_modes *mode,
3519 u8 channel, u8 bw)
3520 {
3521 u8 center_chan;
3522 int i, flags;
3523 enum chan_allowed res, ret = ALLOWED;
3524
3525 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3526 if (!center_chan)
3527 return NOT_ALLOWED;
3528 /* VHT 160 MHz uses DFS channels in most countries. */
3529
3530 /* Check all the channels are available */
3531 for (i = 0; i < 8; i++) {
3532 int adj_chan = center_chan - 14 + i * 4;
3533
3534 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3535 if (res == NOT_ALLOWED)
3536 return NOT_ALLOWED;
3537
3538 if (res == NO_IR)
3539 ret = NO_IR;
3540
3541 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3542 return NOT_ALLOWED;
3543 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3544 return NOT_ALLOWED;
3545 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3546 return NOT_ALLOWED;
3547 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3548 return NOT_ALLOWED;
3549 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3550 return NOT_ALLOWED;
3551 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3552 return NOT_ALLOWED;
3553 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3554 return NOT_ALLOWED;
3555 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3556 return NOT_ALLOWED;
3557 }
3558
3559 return ret;
3560 }
3561
3562
wpas_p2p_verify_channel(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3563 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3564 struct hostapd_hw_modes *mode,
3565 u8 channel, u8 bw)
3566 {
3567 int flag = 0;
3568 enum chan_allowed res, res2;
3569
3570 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3571 if (bw == BW40MINUS) {
3572 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3573 return NOT_ALLOWED;
3574 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3575 } else if (bw == BW40PLUS) {
3576 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3577 return NOT_ALLOWED;
3578 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3579 } else if (bw == BW80) {
3580 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3581 } else if (bw == BW160) {
3582 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3583 }
3584
3585 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3586 return NOT_ALLOWED;
3587 if (res == NO_IR || res2 == NO_IR)
3588 return NO_IR;
3589 return res;
3590 }
3591
3592
wpas_p2p_setup_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3593 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3594 struct p2p_channels *chan,
3595 struct p2p_channels *cli_chan)
3596 {
3597 struct hostapd_hw_modes *mode;
3598 int cla, op, cli_cla;
3599
3600 if (wpa_s->hw.modes == NULL) {
3601 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3602 "of all supported channels; assume dualband "
3603 "support");
3604 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3605 }
3606
3607 cla = cli_cla = 0;
3608
3609 for (op = 0; global_op_class[op].op_class; op++) {
3610 const struct oper_class_map *o = &global_op_class[op];
3611 u8 ch;
3612 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3613
3614 if (o->p2p == NO_P2P_SUPP)
3615 continue;
3616
3617 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3618 if (mode == NULL)
3619 continue;
3620 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3621 wpa_s->global->p2p_24ghz_social_channels = 1;
3622 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3623 enum chan_allowed res;
3624 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3625 if (res == ALLOWED) {
3626 if (reg == NULL) {
3627 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3628 o->op_class);
3629 reg = &chan->reg_class[cla];
3630 cla++;
3631 reg->reg_class = o->op_class;
3632 }
3633 reg->channel[reg->channels] = ch;
3634 reg->channels++;
3635 } else if (res == NO_IR &&
3636 wpa_s->conf->p2p_add_cli_chan) {
3637 if (cli_reg == NULL) {
3638 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3639 o->op_class);
3640 cli_reg = &cli_chan->reg_class[cli_cla];
3641 cli_cla++;
3642 cli_reg->reg_class = o->op_class;
3643 }
3644 cli_reg->channel[cli_reg->channels] = ch;
3645 cli_reg->channels++;
3646 }
3647 }
3648 if (reg) {
3649 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3650 reg->channel, reg->channels);
3651 }
3652 if (cli_reg) {
3653 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3654 cli_reg->channel, cli_reg->channels);
3655 }
3656 }
3657
3658 chan->reg_classes = cla;
3659 cli_chan->reg_classes = cli_cla;
3660
3661 return 0;
3662 }
3663
3664
wpas_p2p_get_ht40_mode(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3665 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3666 struct hostapd_hw_modes *mode, u8 channel)
3667 {
3668 int op;
3669 enum chan_allowed ret;
3670
3671 for (op = 0; global_op_class[op].op_class; op++) {
3672 const struct oper_class_map *o = &global_op_class[op];
3673 u8 ch;
3674
3675 if (o->p2p == NO_P2P_SUPP)
3676 continue;
3677
3678 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3679 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3680 (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3681 ch != channel)
3682 continue;
3683 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3684 if (ret == ALLOWED)
3685 return (o->bw == BW40MINUS) ? -1 : 1;
3686 }
3687 }
3688 return 0;
3689 }
3690
3691
wpas_p2p_get_vht80_center(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3692 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3693 struct hostapd_hw_modes *mode, u8 channel)
3694 {
3695 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3696 return 0;
3697
3698 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3699 }
3700
3701
wpas_p2p_get_vht160_center(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3702 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3703 struct hostapd_hw_modes *mode, u8 channel)
3704 {
3705 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3706 return 0;
3707 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3708 }
3709
3710
wpas_get_noa(void * ctx,const u8 * interface_addr,u8 * buf,size_t buf_len)3711 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3712 size_t buf_len)
3713 {
3714 struct wpa_supplicant *wpa_s = ctx;
3715
3716 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3717 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3718 break;
3719 }
3720 if (wpa_s == NULL)
3721 return -1;
3722
3723 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3724 }
3725
3726
wpas_get_p2p_go_iface(struct wpa_supplicant * wpa_s,const u8 * ssid,size_t ssid_len)3727 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3728 const u8 *ssid, size_t ssid_len)
3729 {
3730 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3731 struct wpa_ssid *s = wpa_s->current_ssid;
3732 if (s == NULL)
3733 continue;
3734 if (s->mode != WPAS_MODE_P2P_GO &&
3735 s->mode != WPAS_MODE_AP &&
3736 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3737 continue;
3738 if (s->ssid_len != ssid_len ||
3739 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3740 continue;
3741 return wpa_s;
3742 }
3743
3744 return NULL;
3745
3746 }
3747
3748
wpas_get_p2p_client_iface(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)3749 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3750 const u8 *peer_dev_addr)
3751 {
3752 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3753 struct wpa_ssid *ssid = wpa_s->current_ssid;
3754 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3755 continue;
3756 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3757 return wpa_s;
3758 }
3759
3760 return NULL;
3761 }
3762
3763
wpas_go_connected(void * ctx,const u8 * dev_addr)3764 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3765 {
3766 struct wpa_supplicant *wpa_s = ctx;
3767
3768 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3769 }
3770
3771
wpas_is_concurrent_session_active(void * ctx)3772 static int wpas_is_concurrent_session_active(void *ctx)
3773 {
3774 struct wpa_supplicant *wpa_s = ctx;
3775 struct wpa_supplicant *ifs;
3776
3777 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3778 if (ifs == wpa_s)
3779 continue;
3780 if (ifs->wpa_state > WPA_ASSOCIATED)
3781 return 1;
3782 }
3783 return 0;
3784 }
3785
3786
wpas_p2p_debug_print(void * ctx,int level,const char * msg)3787 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3788 {
3789 struct wpa_supplicant *wpa_s = ctx;
3790 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3791 }
3792
3793
wpas_p2p_add_p2pdev_interface(struct wpa_supplicant * wpa_s,const char * conf_p2p_dev)3794 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3795 const char *conf_p2p_dev)
3796 {
3797 struct wpa_interface iface;
3798 struct wpa_supplicant *p2pdev_wpa_s;
3799 char ifname[100];
3800 char force_name[100];
3801 int ret;
3802
3803 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3804 wpa_s->ifname);
3805 if (os_snprintf_error(sizeof(ifname), ret))
3806 return -1;
3807 force_name[0] = '\0';
3808 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3809 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3810 force_name, wpa_s->pending_interface_addr, NULL);
3811 if (ret < 0) {
3812 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3813 return ret;
3814 }
3815 os_strlcpy(wpa_s->pending_interface_name, ifname,
3816 sizeof(wpa_s->pending_interface_name));
3817
3818 os_memset(&iface, 0, sizeof(iface));
3819 iface.p2p_mgmt = 1;
3820 iface.ifname = wpa_s->pending_interface_name;
3821 iface.driver = wpa_s->driver->name;
3822 iface.driver_param = wpa_s->conf->driver_param;
3823
3824 /*
3825 * If a P2P Device configuration file was given, use it as the interface
3826 * configuration file (instead of using parent's configuration file.
3827 */
3828 if (conf_p2p_dev) {
3829 iface.confname = conf_p2p_dev;
3830 iface.ctrl_interface = NULL;
3831 } else {
3832 iface.confname = wpa_s->confname;
3833 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3834 }
3835
3836 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3837 if (!p2pdev_wpa_s) {
3838 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3839 return -1;
3840 }
3841
3842 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3843 wpa_s->pending_interface_name[0] = '\0';
3844 return 0;
3845 }
3846
3847
wpas_presence_resp(void * ctx,const u8 * src,u8 status,const u8 * noa,size_t noa_len)3848 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3849 const u8 *noa, size_t noa_len)
3850 {
3851 struct wpa_supplicant *wpa_s, *intf = ctx;
3852 char hex[100];
3853
3854 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3855 if (wpa_s->waiting_presence_resp)
3856 break;
3857 }
3858 if (!wpa_s) {
3859 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3860 return;
3861 }
3862 wpa_s->waiting_presence_resp = 0;
3863
3864 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3865 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3866 " status=%u noa=%s", MAC2STR(src), status, hex);
3867 }
3868
3869
wpas_get_persistent_group(void * ctx,const u8 * addr,const u8 * ssid,size_t ssid_len,u8 * go_dev_addr,u8 * ret_ssid,size_t * ret_ssid_len,u8 * intended_iface_addr)3870 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3871 size_t ssid_len, u8 *go_dev_addr,
3872 u8 *ret_ssid, size_t *ret_ssid_len,
3873 u8 *intended_iface_addr)
3874 {
3875 struct wpa_supplicant *wpa_s = ctx;
3876 struct wpa_ssid *s;
3877
3878 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3879 if (s) {
3880 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3881 *ret_ssid_len = s->ssid_len;
3882 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3883
3884 if (s->mode != WPAS_MODE_P2P_GO) {
3885 os_memset(intended_iface_addr, 0, ETH_ALEN);
3886 } else if (wpas_p2p_create_iface(wpa_s)) {
3887 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3888 return 0;
3889
3890 os_memcpy(intended_iface_addr,
3891 wpa_s->pending_interface_addr, ETH_ALEN);
3892 } else {
3893 os_memcpy(intended_iface_addr, wpa_s->own_addr,
3894 ETH_ALEN);
3895 }
3896 return 1;
3897 }
3898
3899 return 0;
3900 }
3901
3902
wpas_get_go_info(void * ctx,u8 * intended_addr,u8 * ssid,size_t * ssid_len,int * group_iface,unsigned int * freq)3903 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3904 u8 *ssid, size_t *ssid_len, int *group_iface,
3905 unsigned int *freq)
3906 {
3907 struct wpa_supplicant *wpa_s = ctx;
3908 struct wpa_supplicant *go;
3909 struct wpa_ssid *s;
3910
3911 /*
3912 * group_iface will be set to 1 only if a dedicated interface for P2P
3913 * role is required. First, we try to reuse an active GO. However,
3914 * if it is not present, we will try to reactivate an existing
3915 * persistent group and set group_iface to 1, so the caller will know
3916 * that the pending interface should be used.
3917 */
3918 *group_iface = 0;
3919
3920 if (freq)
3921 *freq = 0;
3922
3923 go = wpas_p2p_get_go_group(wpa_s);
3924 if (!go) {
3925 s = wpas_p2p_get_persistent_go(wpa_s);
3926 *group_iface = wpas_p2p_create_iface(wpa_s);
3927 if (s)
3928 os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3929 else
3930 return 0;
3931 } else {
3932 s = go->current_ssid;
3933 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3934 if (freq)
3935 *freq = go->assoc_freq;
3936 }
3937
3938 os_memcpy(ssid, s->ssid, s->ssid_len);
3939 *ssid_len = s->ssid_len;
3940
3941 return 1;
3942 }
3943
3944
wpas_remove_stale_groups(void * ctx,const u8 * peer,const u8 * go,const u8 * ssid,size_t ssid_len)3945 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3946 const u8 *ssid, size_t ssid_len)
3947 {
3948 struct wpa_supplicant *wpa_s = ctx;
3949 struct wpa_ssid *s;
3950 int save_config = 0;
3951 size_t i;
3952
3953 /* Start with our first choice of Persistent Groups */
3954 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3955 if (go && ssid && ssid_len &&
3956 s->ssid_len == ssid_len &&
3957 os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3958 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3959 break;
3960
3961 /* Remove stale persistent group */
3962 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3963 wpa_dbg(wpa_s, MSG_DEBUG,
3964 "P2P: Remove stale persistent group id=%d",
3965 s->id);
3966 wpas_notify_persistent_group_removed(wpa_s, s);
3967 wpa_config_remove_network(wpa_s->conf, s->id);
3968 save_config = 1;
3969 continue;
3970 }
3971
3972 for (i = 0; i < s->num_p2p_clients; i++) {
3973 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3974 peer, ETH_ALEN) != 0)
3975 continue;
3976
3977 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3978 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3979 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3980 break;
3981 }
3982 s->num_p2p_clients--;
3983 save_config = 1;
3984 }
3985
3986 if (save_config)
3987 p2p_config_write(wpa_s);
3988
3989 /* Return TRUE if valid SSID remains */
3990 return s != NULL;
3991 }
3992
3993
wpas_p2ps_get_feat_cap_str(char * buf,size_t buf_len,const u8 * feat_cap,size_t feat_cap_len)3994 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3995 const u8 *feat_cap, size_t feat_cap_len)
3996 {
3997 static const char pref[] = " feature_cap=";
3998 int ret;
3999
4000 buf[0] = '\0';
4001
4002 /*
4003 * We expect a feature capability to contain at least one byte to be
4004 * reported. The string buffer provided by the caller function is
4005 * expected to be big enough to contain all bytes of the attribute for
4006 * known specifications. This function truncates the reported bytes if
4007 * the feature capability data exceeds the string buffer size.
4008 */
4009 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
4010 return;
4011
4012 os_memcpy(buf, pref, sizeof(pref));
4013 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
4014 buf_len - sizeof(pref) + 1,
4015 feat_cap, feat_cap_len);
4016
4017 if (ret != (2 * (int) feat_cap_len))
4018 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
4019 }
4020
4021
wpas_p2ps_prov_complete(void * ctx,u8 status,const u8 * dev,const u8 * adv_mac,const u8 * ses_mac,const u8 * grp_mac,u32 adv_id,u32 ses_id,u8 conncap,int passwd_id,const u8 * persist_ssid,size_t persist_ssid_size,int response_done,int prov_start,const char * session_info,const u8 * feat_cap,size_t feat_cap_len,unsigned int freq,const u8 * group_ssid,size_t group_ssid_len)4022 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
4023 const u8 *adv_mac, const u8 *ses_mac,
4024 const u8 *grp_mac, u32 adv_id, u32 ses_id,
4025 u8 conncap, int passwd_id,
4026 const u8 *persist_ssid,
4027 size_t persist_ssid_size, int response_done,
4028 int prov_start, const char *session_info,
4029 const u8 *feat_cap, size_t feat_cap_len,
4030 unsigned int freq,
4031 const u8 *group_ssid, size_t group_ssid_len)
4032 {
4033 struct wpa_supplicant *wpa_s = ctx;
4034 u8 mac[ETH_ALEN];
4035 struct wpa_ssid *persistent_go, *stale, *s = NULL;
4036 int save_config = 0;
4037 struct wpa_supplicant *go_wpa_s;
4038 char feat_cap_str[256];
4039
4040 if (!dev)
4041 return;
4042
4043 os_memset(mac, 0, ETH_ALEN);
4044 if (!adv_mac)
4045 adv_mac = mac;
4046 if (!ses_mac)
4047 ses_mac = mac;
4048 if (!grp_mac)
4049 grp_mac = mac;
4050
4051 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
4052 feat_cap, feat_cap_len);
4053
4054 if (prov_start) {
4055 if (session_info == NULL) {
4056 wpa_msg_global(wpa_s, MSG_INFO,
4057 P2P_EVENT_P2PS_PROVISION_START MACSTR
4058 " adv_id=%x conncap=%x"
4059 " adv_mac=" MACSTR
4060 " session=%x mac=" MACSTR
4061 " dev_passwd_id=%d%s",
4062 MAC2STR(dev), adv_id, conncap,
4063 MAC2STR(adv_mac),
4064 ses_id, MAC2STR(ses_mac),
4065 passwd_id, feat_cap_str);
4066 } else {
4067 wpa_msg_global(wpa_s, MSG_INFO,
4068 P2P_EVENT_P2PS_PROVISION_START MACSTR
4069 " adv_id=%x conncap=%x"
4070 " adv_mac=" MACSTR
4071 " session=%x mac=" MACSTR
4072 " dev_passwd_id=%d info='%s'%s",
4073 MAC2STR(dev), adv_id, conncap,
4074 MAC2STR(adv_mac),
4075 ses_id, MAC2STR(ses_mac),
4076 passwd_id, session_info, feat_cap_str);
4077 }
4078 return;
4079 }
4080
4081 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4082 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4083
4084 if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4085 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4086 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4087
4088 if (persistent_go && !persistent_go->num_p2p_clients) {
4089 /* remove empty persistent GO */
4090 wpa_dbg(wpa_s, MSG_DEBUG,
4091 "P2P: Remove empty persistent group id=%d",
4092 persistent_go->id);
4093 wpas_notify_persistent_group_removed(wpa_s,
4094 persistent_go);
4095 wpa_config_remove_network(wpa_s->conf,
4096 persistent_go->id);
4097 }
4098
4099 wpa_msg_global(wpa_s, MSG_INFO,
4100 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4101 " status=%d"
4102 " adv_id=%x adv_mac=" MACSTR
4103 " session=%x mac=" MACSTR "%s",
4104 MAC2STR(dev), status,
4105 adv_id, MAC2STR(adv_mac),
4106 ses_id, MAC2STR(ses_mac), feat_cap_str);
4107 return;
4108 }
4109
4110 /* Clean up stale persistent groups with this device */
4111 if (persist_ssid && persist_ssid_size)
4112 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4113 persist_ssid_size);
4114
4115 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4116 is_zero_ether_addr(grp_mac)) {
4117 wpa_dbg(wpa_s, MSG_ERROR,
4118 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4119 return;
4120 }
4121
4122 for (;;) {
4123 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4124 if (!stale)
4125 break;
4126
4127 if (s && s->ssid_len == stale->ssid_len &&
4128 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4129 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4130 break;
4131
4132 /* Remove stale persistent group */
4133 if (stale->mode != WPAS_MODE_P2P_GO ||
4134 stale->num_p2p_clients <= 1) {
4135 wpa_dbg(wpa_s, MSG_DEBUG,
4136 "P2P: Remove stale persistent group id=%d",
4137 stale->id);
4138 wpas_notify_persistent_group_removed(wpa_s, stale);
4139 wpa_config_remove_network(wpa_s->conf, stale->id);
4140 } else {
4141 size_t i;
4142
4143 for (i = 0; i < stale->num_p2p_clients; i++) {
4144 if (os_memcmp(stale->p2p_client_list +
4145 i * ETH_ALEN,
4146 dev, ETH_ALEN) == 0) {
4147 os_memmove(stale->p2p_client_list +
4148 i * ETH_ALEN,
4149 stale->p2p_client_list +
4150 (i + 1) * ETH_ALEN,
4151 (stale->num_p2p_clients -
4152 i - 1) * ETH_ALEN);
4153 break;
4154 }
4155 }
4156 stale->num_p2p_clients--;
4157 }
4158 save_config = 1;
4159 }
4160
4161 if (save_config)
4162 p2p_config_write(wpa_s);
4163
4164 if (s) {
4165 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4166 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4167
4168 if (persistent_go && s != persistent_go &&
4169 !persistent_go->num_p2p_clients) {
4170 /* remove empty persistent GO */
4171 wpa_dbg(wpa_s, MSG_DEBUG,
4172 "P2P: Remove empty persistent group id=%d",
4173 persistent_go->id);
4174 wpas_notify_persistent_group_removed(wpa_s,
4175 persistent_go);
4176 wpa_config_remove_network(wpa_s->conf,
4177 persistent_go->id);
4178 /* Save config */
4179 }
4180
4181 wpa_msg_global(wpa_s, MSG_INFO,
4182 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4183 " status=%d"
4184 " adv_id=%x adv_mac=" MACSTR
4185 " session=%x mac=" MACSTR
4186 " persist=%d%s",
4187 MAC2STR(dev), status,
4188 adv_id, MAC2STR(adv_mac),
4189 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4190 return;
4191 }
4192
4193 wpa_s->global->pending_p2ps_group = 0;
4194 wpa_s->global->pending_p2ps_group_freq = 0;
4195
4196 if (conncap == P2PS_SETUP_GROUP_OWNER) {
4197 /*
4198 * We need to copy the interface name. Simply saving a
4199 * pointer isn't enough, since if we use pending_interface_name
4200 * it will be overwritten when the group is added.
4201 */
4202 char go_ifname[100];
4203
4204 go_ifname[0] = '\0';
4205 if (!go_wpa_s) {
4206 if (!response_done) {
4207 wpa_s->global->pending_p2ps_group = 1;
4208 wpa_s->global->pending_p2ps_group_freq = freq;
4209 }
4210
4211 if (!wpas_p2p_create_iface(wpa_s))
4212 os_memcpy(go_ifname, wpa_s->ifname,
4213 sizeof(go_ifname));
4214 else if (wpa_s->pending_interface_name[0])
4215 os_memcpy(go_ifname,
4216 wpa_s->pending_interface_name,
4217 sizeof(go_ifname));
4218
4219 if (!go_ifname[0]) {
4220 wpas_p2ps_prov_complete(
4221 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4222 dev, adv_mac, ses_mac,
4223 grp_mac, adv_id, ses_id, 0, 0,
4224 NULL, 0, 0, 0, NULL, NULL, 0, 0,
4225 NULL, 0);
4226 return;
4227 }
4228
4229 /* If PD Resp complete, start up the GO */
4230 if (response_done && persistent_go) {
4231 wpas_p2p_group_add_persistent(
4232 wpa_s, persistent_go,
4233 0, 0, freq, 0, 0, 0, 0, 0, NULL,
4234 persistent_go->mode ==
4235 WPAS_MODE_P2P_GO ?
4236 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4237 0, 0);
4238 } else if (response_done) {
4239 wpas_p2p_group_add(wpa_s, 1, freq,
4240 0, 0, 0, 0, 0);
4241 }
4242
4243 if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4244 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4245 ETH_ALEN);
4246 wpa_s->p2ps_method_config_any = 1;
4247 }
4248 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4249 os_memcpy(go_ifname, go_wpa_s->ifname,
4250 sizeof(go_ifname));
4251
4252 if (is_zero_ether_addr(grp_mac)) {
4253 wpa_dbg(go_wpa_s, MSG_DEBUG,
4254 "P2P: Setting PIN-1 for ANY");
4255 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4256 "12345670", NULL, 0,
4257 0);
4258 } else {
4259 wpa_dbg(go_wpa_s, MSG_DEBUG,
4260 "P2P: Setting PIN-1 for " MACSTR,
4261 MAC2STR(grp_mac));
4262 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4263 "12345670", NULL, 0,
4264 0);
4265 }
4266
4267 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4268 wpa_s->p2ps_method_config_any = 1;
4269 }
4270
4271 wpa_msg_global(wpa_s, MSG_INFO,
4272 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4273 " status=%d conncap=%x"
4274 " adv_id=%x adv_mac=" MACSTR
4275 " session=%x mac=" MACSTR
4276 " dev_passwd_id=%d go=%s%s",
4277 MAC2STR(dev), status, conncap,
4278 adv_id, MAC2STR(adv_mac),
4279 ses_id, MAC2STR(ses_mac),
4280 passwd_id, go_ifname, feat_cap_str);
4281 return;
4282 }
4283
4284 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4285 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4286
4287 if (persistent_go && !persistent_go->num_p2p_clients) {
4288 /* remove empty persistent GO */
4289 wpa_dbg(wpa_s, MSG_DEBUG,
4290 "P2P: Remove empty persistent group id=%d",
4291 persistent_go->id);
4292 wpas_notify_persistent_group_removed(wpa_s, persistent_go);
4293 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4294 }
4295
4296 if (conncap == P2PS_SETUP_CLIENT) {
4297 char ssid_hex[32 * 2 + 1];
4298
4299 if (group_ssid)
4300 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4301 group_ssid, group_ssid_len);
4302 else
4303 ssid_hex[0] = '\0';
4304 wpa_msg_global(wpa_s, MSG_INFO,
4305 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4306 " status=%d conncap=%x"
4307 " adv_id=%x adv_mac=" MACSTR
4308 " session=%x mac=" MACSTR
4309 " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4310 MAC2STR(dev), status, conncap,
4311 adv_id, MAC2STR(adv_mac),
4312 ses_id, MAC2STR(ses_mac),
4313 passwd_id, MAC2STR(grp_mac), feat_cap_str,
4314 group_ssid ? " group_ssid=" : "", ssid_hex);
4315 } else {
4316 wpa_msg_global(wpa_s, MSG_INFO,
4317 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4318 " status=%d conncap=%x"
4319 " adv_id=%x adv_mac=" MACSTR
4320 " session=%x mac=" MACSTR
4321 " dev_passwd_id=%d%s",
4322 MAC2STR(dev), status, conncap,
4323 adv_id, MAC2STR(adv_mac),
4324 ses_id, MAC2STR(ses_mac),
4325 passwd_id, feat_cap_str);
4326 }
4327 }
4328
4329
_wpas_p2p_in_progress(void * ctx)4330 static int _wpas_p2p_in_progress(void *ctx)
4331 {
4332 struct wpa_supplicant *wpa_s = ctx;
4333 return wpas_p2p_in_progress(wpa_s);
4334 }
4335
4336
wpas_prov_disc_resp_cb(void * ctx)4337 static int wpas_prov_disc_resp_cb(void *ctx)
4338 {
4339 struct wpa_supplicant *wpa_s = ctx;
4340 struct wpa_ssid *persistent_go;
4341 unsigned int freq;
4342
4343 if (!wpa_s->global->pending_p2ps_group)
4344 return 0;
4345
4346 freq = wpa_s->global->pending_p2ps_group_freq;
4347 wpa_s->global->pending_p2ps_group_freq = 0;
4348 wpa_s->global->pending_p2ps_group = 0;
4349
4350 if (wpas_p2p_get_go_group(wpa_s))
4351 return 0;
4352 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4353
4354 if (persistent_go) {
4355 wpas_p2p_group_add_persistent(
4356 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, 0, NULL,
4357 persistent_go->mode == WPAS_MODE_P2P_GO ?
4358 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4359 } else {
4360 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0, 0);
4361 }
4362
4363 return 1;
4364 }
4365
4366
wpas_p2p_get_pref_freq_list(void * ctx,int go,unsigned int * len,unsigned int * freq_list)4367 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4368 unsigned int *len,
4369 unsigned int *freq_list)
4370 {
4371 struct wpa_supplicant *wpa_s = ctx;
4372
4373 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4374 WPA_IF_P2P_CLIENT, len, freq_list);
4375 }
4376
4377
wpas_p2p_mac_setup(struct wpa_supplicant * wpa_s)4378 int wpas_p2p_mac_setup(struct wpa_supplicant *wpa_s)
4379 {
4380 u8 addr[ETH_ALEN] = {0};
4381
4382 if (wpa_s->conf->p2p_device_random_mac_addr == 0)
4383 return 0;
4384
4385 if (!wpa_s->conf->ssid) {
4386 if (random_mac_addr(addr) < 0) {
4387 wpa_msg(wpa_s, MSG_INFO,
4388 "Failed to generate random MAC address");
4389 return -EINVAL;
4390 }
4391
4392 /* Store generated MAC address. */
4393 os_memcpy(wpa_s->conf->p2p_device_persistent_mac_addr, addr,
4394 ETH_ALEN);
4395 } else {
4396 /* If there are existing saved groups, restore last MAC address.
4397 * if there is no last used MAC address, the last one is
4398 * factory MAC. */
4399 if (is_zero_ether_addr(
4400 wpa_s->conf->p2p_device_persistent_mac_addr))
4401 return 0;
4402 os_memcpy(addr, wpa_s->conf->p2p_device_persistent_mac_addr,
4403 ETH_ALEN);
4404 wpa_msg(wpa_s, MSG_DEBUG, "Restore last used MAC address.");
4405 }
4406
4407 if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) {
4408 wpa_msg(wpa_s, MSG_INFO,
4409 "Failed to set random MAC address");
4410 return -EINVAL;
4411 }
4412
4413 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) {
4414 wpa_msg(wpa_s, MSG_INFO,
4415 "Could not update MAC address information");
4416 return -EINVAL;
4417 }
4418
4419 wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR,
4420 MAC2STR(addr));
4421
4422 return 0;
4423 }
4424
4425
4426 /**
4427 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4428 * @global: Pointer to global data from wpa_supplicant_init()
4429 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4430 * Returns: 0 on success, -1 on failure
4431 */
wpas_p2p_init(struct wpa_global * global,struct wpa_supplicant * wpa_s)4432 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4433 {
4434 struct p2p_config p2p;
4435 int i;
4436
4437 if (wpa_s->conf->p2p_disabled)
4438 return 0;
4439
4440 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4441 return 0;
4442
4443 if (global->p2p)
4444 return 0;
4445
4446 if (wpas_p2p_mac_setup(wpa_s) < 0) {
4447 wpa_msg(wpa_s, MSG_ERROR,
4448 "Failed to initialize P2P random MAC address.");
4449 return -1;
4450 }
4451
4452 os_memset(&p2p, 0, sizeof(p2p));
4453 p2p.cb_ctx = wpa_s;
4454 p2p.debug_print = wpas_p2p_debug_print;
4455 p2p.p2p_scan = wpas_p2p_scan;
4456 p2p.send_action = wpas_send_action;
4457 p2p.send_action_done = wpas_send_action_done;
4458 p2p.go_neg_completed = wpas_go_neg_completed;
4459 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4460 p2p.dev_found = wpas_dev_found;
4461 p2p.dev_lost = wpas_dev_lost;
4462 p2p.find_stopped = wpas_find_stopped;
4463 p2p.start_listen = wpas_start_listen;
4464 p2p.stop_listen = wpas_stop_listen;
4465 p2p.send_probe_resp = wpas_send_probe_resp;
4466 p2p.sd_request = wpas_sd_request;
4467 p2p.sd_response = wpas_sd_response;
4468 p2p.prov_disc_req = wpas_prov_disc_req;
4469 p2p.prov_disc_resp = wpas_prov_disc_resp;
4470 p2p.prov_disc_fail = wpas_prov_disc_fail;
4471 p2p.invitation_process = wpas_invitation_process;
4472 p2p.invitation_received = wpas_invitation_received;
4473 p2p.invitation_result = wpas_invitation_result;
4474 p2p.get_noa = wpas_get_noa;
4475 p2p.go_connected = wpas_go_connected;
4476 p2p.presence_resp = wpas_presence_resp;
4477 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4478 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4479 p2p.get_persistent_group = wpas_get_persistent_group;
4480 p2p.get_go_info = wpas_get_go_info;
4481 p2p.remove_stale_groups = wpas_remove_stale_groups;
4482 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4483 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4484 p2p.p2ps_group_capability = p2ps_group_capability;
4485 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4486
4487 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4488 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4489 p2p.dev_name = wpa_s->conf->device_name;
4490 p2p.manufacturer = wpa_s->conf->manufacturer;
4491 p2p.model_name = wpa_s->conf->model_name;
4492 p2p.model_number = wpa_s->conf->model_number;
4493 p2p.serial_number = wpa_s->conf->serial_number;
4494 if (wpa_s->wps) {
4495 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4496 p2p.config_methods = wpa_s->wps->config_methods;
4497 }
4498
4499 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4500 wpa_printf(MSG_ERROR,
4501 "P2P: Failed to configure supported channel list");
4502 return -1;
4503 }
4504
4505 if (wpa_s->conf->p2p_listen_reg_class &&
4506 wpa_s->conf->p2p_listen_channel) {
4507 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4508 p2p.channel = wpa_s->conf->p2p_listen_channel;
4509 p2p.channel_forced = 1;
4510 } else {
4511 /*
4512 * Pick one of the social channels randomly as the listen
4513 * channel.
4514 */
4515 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4516 &p2p.channel,
4517 &global->p2p_go_avoid_freq,
4518 &global->p2p_disallow_freq) !=
4519 0) {
4520 wpa_printf(MSG_INFO,
4521 "P2P: No social channels supported by the driver - do not enable P2P");
4522 return 0;
4523 }
4524 p2p.channel_forced = 0;
4525 }
4526 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4527 p2p.reg_class, p2p.channel);
4528
4529 if (wpa_s->conf->p2p_oper_reg_class &&
4530 wpa_s->conf->p2p_oper_channel) {
4531 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4532 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4533 p2p.cfg_op_channel = 1;
4534 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4535 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4536
4537 } else {
4538 /*
4539 * Use random operation channel from 2.4 GHz band social
4540 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4541 * other preference is indicated.
4542 */
4543 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4544 &p2p.op_channel, NULL,
4545 NULL) != 0) {
4546 wpa_printf(MSG_INFO,
4547 "P2P: Failed to select random social channel as operation channel");
4548 p2p.op_reg_class = 0;
4549 p2p.op_channel = 0;
4550 /* This will be overridden during group setup in
4551 * p2p_prepare_channel(), so allow setup to continue. */
4552 }
4553 p2p.cfg_op_channel = 0;
4554 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4555 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4556 }
4557
4558 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4559 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4560 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4561 }
4562
4563 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4564 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4565 p2p.country[2] = 0x04;
4566 } else
4567 os_memcpy(p2p.country, "XX\x04", 3);
4568
4569 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4570 WPS_DEV_TYPE_LEN);
4571
4572 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4573 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4574 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4575
4576 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4577 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4578
4579 p2p.max_peers = 100;
4580
4581 if (wpa_s->conf->p2p_ssid_postfix) {
4582 p2p.ssid_postfix_len =
4583 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4584 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4585 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4586 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4587 p2p.ssid_postfix_len);
4588 }
4589
4590 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4591
4592 p2p.max_listen = wpa_s->max_remain_on_chan;
4593
4594 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4595 wpa_s->conf->p2p_passphrase_len <= 63)
4596 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4597 else
4598 p2p.passphrase_len = 8;
4599
4600 global->p2p = p2p_init(&p2p);
4601 if (global->p2p == NULL)
4602 return -1;
4603 global->p2p_init_wpa_s = wpa_s;
4604
4605 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4606 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4607 continue;
4608 p2p_add_wps_vendor_extension(
4609 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4610 }
4611
4612 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4613
4614 return 0;
4615 }
4616
4617
4618 /**
4619 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4620 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4621 *
4622 * This function deinitialize per-interface P2P data.
4623 */
wpas_p2p_deinit(struct wpa_supplicant * wpa_s)4624 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4625 {
4626 if (wpa_s->driver && wpa_s->drv_priv)
4627 wpa_drv_probe_req_report(wpa_s, 0);
4628
4629 if (wpa_s->go_params) {
4630 /* Clear any stored provisioning info */
4631 p2p_clear_provisioning_info(
4632 wpa_s->global->p2p,
4633 wpa_s->go_params->peer_device_addr);
4634 }
4635
4636 os_free(wpa_s->go_params);
4637 wpa_s->go_params = NULL;
4638 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4639 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4640 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4641 wpa_s->p2p_long_listen = 0;
4642 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4643 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4644 wpas_p2p_remove_pending_group_interface(wpa_s);
4645 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4646 wpas_p2p_listen_work_done(wpa_s);
4647 if (wpa_s->p2p_send_action_work) {
4648 os_free(wpa_s->p2p_send_action_work->ctx);
4649 radio_work_done(wpa_s->p2p_send_action_work);
4650 wpa_s->p2p_send_action_work = NULL;
4651 }
4652 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4653
4654 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4655 wpa_s->p2p_oob_dev_pw = NULL;
4656
4657 os_free(wpa_s->p2p_group_common_freqs);
4658 wpa_s->p2p_group_common_freqs = NULL;
4659 wpa_s->p2p_group_common_freqs_num = 0;
4660
4661 /* TODO: remove group interface from the driver if this wpa_s instance
4662 * is on top of a P2P group interface */
4663 }
4664
4665
4666 /**
4667 * wpas_p2p_deinit_global - Deinitialize global P2P module
4668 * @global: Pointer to global data from wpa_supplicant_init()
4669 *
4670 * This function deinitializes the global (per device) P2P module.
4671 */
wpas_p2p_deinit_global(struct wpa_global * global)4672 static void wpas_p2p_deinit_global(struct wpa_global *global)
4673 {
4674 struct wpa_supplicant *wpa_s, *tmp;
4675
4676 wpa_s = global->ifaces;
4677
4678 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4679
4680 /* Remove remaining P2P group interfaces */
4681 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4682 wpa_s = wpa_s->next;
4683 while (wpa_s) {
4684 tmp = global->ifaces;
4685 while (tmp &&
4686 (tmp == wpa_s ||
4687 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4688 tmp = tmp->next;
4689 }
4690 if (tmp == NULL)
4691 break;
4692 /* Disconnect from the P2P group and deinit the interface */
4693 wpas_p2p_disconnect(tmp);
4694 }
4695
4696 /*
4697 * Deinit GO data on any possibly remaining interface (if main
4698 * interface is used as GO).
4699 */
4700 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4701 if (wpa_s->ap_iface)
4702 wpas_p2p_group_deinit(wpa_s);
4703 }
4704
4705 p2p_deinit(global->p2p);
4706 global->p2p = NULL;
4707 global->p2p_init_wpa_s = NULL;
4708 }
4709
4710
wpas_p2p_create_iface(struct wpa_supplicant * wpa_s)4711 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4712 {
4713 if (wpa_s->conf->p2p_no_group_iface)
4714 return 0; /* separate interface disabled per configuration */
4715 if (wpa_s->drv_flags &
4716 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4717 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4718 return 1; /* P2P group requires a new interface in every case
4719 */
4720 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4721 return 0; /* driver does not support concurrent operations */
4722 if (wpa_s->global->ifaces->next)
4723 return 1; /* more that one interface already in use */
4724 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4725 return 1; /* this interface is already in use */
4726 return 0;
4727 }
4728
4729
wpas_p2p_start_go_neg(struct wpa_supplicant * wpa_s,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,struct wpa_ssid * ssid,unsigned int pref_freq)4730 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4731 const u8 *peer_addr,
4732 enum p2p_wps_method wps_method,
4733 int go_intent, const u8 *own_interface_addr,
4734 unsigned int force_freq, int persistent_group,
4735 struct wpa_ssid *ssid, unsigned int pref_freq)
4736 {
4737 if (persistent_group && wpa_s->conf->persistent_reconnect)
4738 persistent_group = 2;
4739
4740 /*
4741 * Increase GO config timeout if HT40 is used since it takes some time
4742 * to scan channels for coex purposes before the BSS can be started.
4743 */
4744 p2p_set_config_timeout(wpa_s->global->p2p,
4745 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4746
4747 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4748 go_intent, own_interface_addr, force_freq,
4749 persistent_group, ssid ? ssid->ssid : NULL,
4750 ssid ? ssid->ssid_len : 0,
4751 wpa_s->p2p_pd_before_go_neg, pref_freq,
4752 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4753 0);
4754 }
4755
4756
wpas_p2p_auth_go_neg(struct wpa_supplicant * wpa_s,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,struct wpa_ssid * ssid,unsigned int pref_freq)4757 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4758 const u8 *peer_addr,
4759 enum p2p_wps_method wps_method,
4760 int go_intent, const u8 *own_interface_addr,
4761 unsigned int force_freq, int persistent_group,
4762 struct wpa_ssid *ssid, unsigned int pref_freq)
4763 {
4764 if (persistent_group && wpa_s->conf->persistent_reconnect)
4765 persistent_group = 2;
4766
4767 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4768 go_intent, own_interface_addr, force_freq,
4769 persistent_group, ssid ? ssid->ssid : NULL,
4770 ssid ? ssid->ssid_len : 0, pref_freq,
4771 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4772 0);
4773 }
4774
4775
wpas_p2p_check_join_scan_limit(struct wpa_supplicant * wpa_s)4776 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4777 {
4778 wpa_s->p2p_join_scan_count++;
4779 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4780 wpa_s->p2p_join_scan_count);
4781 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4782 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4783 " for join operationg - stop join attempt",
4784 MAC2STR(wpa_s->pending_join_iface_addr));
4785 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4786 if (wpa_s->p2p_auto_pd) {
4787 wpa_s->p2p_auto_pd = 0;
4788 wpa_msg_global(wpa_s, MSG_INFO,
4789 P2P_EVENT_PROV_DISC_FAILURE
4790 " p2p_dev_addr=" MACSTR " status=N/A",
4791 MAC2STR(wpa_s->pending_join_dev_addr));
4792 return;
4793 }
4794 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4795 P2P_EVENT_GROUP_FORMATION_FAILURE);
4796 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4797 }
4798 }
4799
4800
wpas_check_freq_conflict(struct wpa_supplicant * wpa_s,int freq)4801 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4802 {
4803 int res;
4804 unsigned int num, i;
4805 struct wpa_used_freq_data *freqs;
4806
4807 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4808 /* Multiple channels are supported and not all are in use */
4809 return 0;
4810 }
4811
4812 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4813 sizeof(struct wpa_used_freq_data));
4814 if (!freqs)
4815 return 1;
4816
4817 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4818 wpa_s->num_multichan_concurrent);
4819
4820 for (i = 0; i < num; i++) {
4821 if (freqs[i].freq == freq) {
4822 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4823 freq);
4824 res = 0;
4825 goto exit_free;
4826 }
4827 }
4828
4829 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4830 res = 1;
4831
4832 exit_free:
4833 os_free(freqs);
4834 return res;
4835 }
4836
4837
wpas_p2p_peer_go(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)4838 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4839 const u8 *peer_dev_addr)
4840 {
4841 struct wpa_bss *bss;
4842 int updated;
4843
4844 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4845 if (bss == NULL)
4846 return -1;
4847 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4848 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4849 "last scan");
4850 return 0;
4851 }
4852
4853 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4854 &bss->last_update);
4855 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4856 "%ld.%06ld (%supdated in last scan)",
4857 bss->last_update.sec, bss->last_update.usec,
4858 updated ? "": "not ");
4859
4860 return updated;
4861 }
4862
4863
wpas_p2p_scan_res_join(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)4864 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4865 struct wpa_scan_results *scan_res)
4866 {
4867 struct wpa_bss *bss = NULL;
4868 int freq;
4869 u8 iface_addr[ETH_ALEN];
4870
4871 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4872
4873 if (wpa_s->global->p2p_disabled)
4874 return;
4875
4876 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4877 scan_res ? (int) scan_res->num : -1,
4878 wpa_s->p2p_auto_join ? "auto_" : "");
4879
4880 if (scan_res)
4881 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4882
4883 if (wpa_s->p2p_auto_pd) {
4884 int join = wpas_p2p_peer_go(wpa_s,
4885 wpa_s->pending_join_dev_addr);
4886 if (join == 0 &&
4887 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4888 wpa_s->auto_pd_scan_retry++;
4889 bss = wpa_bss_get_bssid_latest(
4890 wpa_s, wpa_s->pending_join_dev_addr);
4891 if (bss) {
4892 freq = bss->freq;
4893 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4894 "the peer " MACSTR " at %d MHz",
4895 wpa_s->auto_pd_scan_retry,
4896 MAC2STR(wpa_s->
4897 pending_join_dev_addr),
4898 freq);
4899 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4900 return;
4901 }
4902 }
4903
4904 if (join < 0)
4905 join = 0;
4906
4907 wpa_s->p2p_auto_pd = 0;
4908 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4909 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4910 MAC2STR(wpa_s->pending_join_dev_addr), join);
4911 if (p2p_prov_disc_req(wpa_s->global->p2p,
4912 wpa_s->pending_join_dev_addr, NULL,
4913 wpa_s->pending_pd_config_methods, join,
4914 0, wpa_s->user_initiated_pd) < 0) {
4915 wpa_s->p2p_auto_pd = 0;
4916 wpa_msg_global(wpa_s, MSG_INFO,
4917 P2P_EVENT_PROV_DISC_FAILURE
4918 " p2p_dev_addr=" MACSTR " status=N/A",
4919 MAC2STR(wpa_s->pending_join_dev_addr));
4920 }
4921 return;
4922 }
4923
4924 if (wpa_s->p2p_auto_join) {
4925 int join = wpas_p2p_peer_go(wpa_s,
4926 wpa_s->pending_join_dev_addr);
4927 if (join < 0) {
4928 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4929 "running a GO -> use GO Negotiation");
4930 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4931 P2P_EVENT_FALLBACK_TO_GO_NEG
4932 "reason=peer-not-running-GO");
4933 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4934 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4935 wpa_s->p2p_persistent_group, 0, 0, 0,
4936 wpa_s->p2p_go_intent,
4937 wpa_s->p2p_connect_freq,
4938 wpa_s->p2p_go_vht_center_freq2,
4939 wpa_s->p2p_persistent_id,
4940 wpa_s->p2p_pd_before_go_neg,
4941 wpa_s->p2p_go_ht40,
4942 wpa_s->p2p_go_vht,
4943 wpa_s->p2p_go_max_oper_chwidth,
4944 wpa_s->p2p_go_he,
4945 NULL, 0);
4946 return;
4947 }
4948
4949 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4950 "try to join the group", join ? "" :
4951 " in older scan");
4952 if (!join) {
4953 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4954 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4955 wpa_s->p2p_fallback_to_go_neg = 1;
4956 }
4957 }
4958
4959 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4960 wpa_s->pending_join_iface_addr);
4961 if (freq < 0 &&
4962 p2p_get_interface_addr(wpa_s->global->p2p,
4963 wpa_s->pending_join_dev_addr,
4964 iface_addr) == 0 &&
4965 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4966 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4967 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4968 "address for join from " MACSTR " to " MACSTR
4969 " based on newly discovered P2P peer entry",
4970 MAC2STR(wpa_s->pending_join_iface_addr),
4971 MAC2STR(iface_addr));
4972 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4973 ETH_ALEN);
4974
4975 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4976 wpa_s->pending_join_iface_addr);
4977 }
4978 if (freq >= 0) {
4979 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4980 "from P2P peer table: %d MHz", freq);
4981 }
4982 if (wpa_s->p2p_join_ssid_len) {
4983 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4984 MACSTR " and SSID %s",
4985 MAC2STR(wpa_s->pending_join_iface_addr),
4986 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4987 wpa_s->p2p_join_ssid_len));
4988 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4989 wpa_s->p2p_join_ssid,
4990 wpa_s->p2p_join_ssid_len);
4991 } else if (!bss) {
4992 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4993 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4994 bss = wpa_bss_get_bssid_latest(wpa_s,
4995 wpa_s->pending_join_iface_addr);
4996 }
4997 if (bss) {
4998 u8 dev_addr[ETH_ALEN];
4999
5000 freq = bss->freq;
5001 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
5002 "from BSS table: %d MHz (SSID %s)", freq,
5003 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5004 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
5005 dev_addr) == 0 &&
5006 os_memcmp(wpa_s->pending_join_dev_addr,
5007 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
5008 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
5009 ETH_ALEN) != 0) {
5010 wpa_printf(MSG_DEBUG,
5011 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
5012 MAC2STR(dev_addr),
5013 MAC2STR(wpa_s->pending_join_dev_addr));
5014 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
5015 ETH_ALEN);
5016 }
5017 }
5018 if (freq > 0) {
5019 u16 method;
5020
5021 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
5022 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
5023 P2P_EVENT_GROUP_FORMATION_FAILURE
5024 "reason=FREQ_CONFLICT");
5025 wpas_notify_p2p_group_formation_failure(
5026 wpa_s, "FREQ_CONFLICT");
5027 return;
5028 }
5029
5030 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
5031 "prior to joining an existing group (GO " MACSTR
5032 " freq=%u MHz)",
5033 MAC2STR(wpa_s->pending_join_dev_addr), freq);
5034 wpa_s->pending_pd_before_join = 1;
5035
5036 switch (wpa_s->pending_join_wps_method) {
5037 case WPS_PIN_DISPLAY:
5038 method = WPS_CONFIG_KEYPAD;
5039 break;
5040 case WPS_PIN_KEYPAD:
5041 method = WPS_CONFIG_DISPLAY;
5042 break;
5043 case WPS_PBC:
5044 method = WPS_CONFIG_PUSHBUTTON;
5045 break;
5046 case WPS_P2PS:
5047 method = WPS_CONFIG_P2PS;
5048 break;
5049 default:
5050 method = 0;
5051 break;
5052 }
5053
5054 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
5055 wpa_s->pending_join_dev_addr) ==
5056 method)) {
5057 /*
5058 * We have already performed provision discovery for
5059 * joining the group. Proceed directly to join
5060 * operation without duplicated provision discovery. */
5061 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
5062 "with " MACSTR " already done - proceed to "
5063 "join",
5064 MAC2STR(wpa_s->pending_join_dev_addr));
5065 wpa_s->pending_pd_before_join = 0;
5066 goto start;
5067 }
5068
5069 if (p2p_prov_disc_req(wpa_s->global->p2p,
5070 wpa_s->pending_join_dev_addr,
5071 NULL, method, 1,
5072 freq, wpa_s->user_initiated_pd) < 0) {
5073 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
5074 "Discovery Request before joining an "
5075 "existing group");
5076 wpa_s->pending_pd_before_join = 0;
5077 goto start;
5078 }
5079 return;
5080 }
5081
5082 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
5083 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5084 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5085 wpas_p2p_check_join_scan_limit(wpa_s);
5086 return;
5087
5088 start:
5089 /* Start join operation immediately */
5090 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
5091 wpa_s->p2p_join_ssid_len);
5092 }
5093
5094
wpas_p2p_join_scan_req(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)5095 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
5096 const u8 *ssid, size_t ssid_len)
5097 {
5098 int ret;
5099 struct wpa_driver_scan_params params;
5100 struct wpabuf *wps_ie, *ies;
5101 size_t ielen;
5102 int freqs[2] = { 0, 0 };
5103 unsigned int bands;
5104
5105 os_memset(¶ms, 0, sizeof(params));
5106
5107 /* P2P Wildcard SSID */
5108 params.num_ssids = 1;
5109 if (ssid && ssid_len) {
5110 params.ssids[0].ssid = ssid;
5111 params.ssids[0].ssid_len = ssid_len;
5112 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
5113 wpa_s->p2p_join_ssid_len = ssid_len;
5114 } else {
5115 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
5116 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
5117 wpa_s->p2p_join_ssid_len = 0;
5118 }
5119
5120 wpa_s->wps->dev.p2p = 1;
5121 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
5122 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
5123 NULL);
5124 if (wps_ie == NULL) {
5125 wpas_p2p_scan_res_join(wpa_s, NULL);
5126 return;
5127 }
5128
5129 if (!freq) {
5130 int oper_freq;
5131 /*
5132 * If freq is not provided, check the operating freq of the GO
5133 * and use a single channel scan on if possible.
5134 */
5135 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5136 wpa_s->pending_join_iface_addr);
5137 if (oper_freq > 0)
5138 freq = oper_freq;
5139 }
5140 if (freq > 0) {
5141 freqs[0] = freq;
5142 params.freqs = freqs;
5143 }
5144
5145 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5146 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5147 if (ies == NULL) {
5148 wpabuf_free(wps_ie);
5149 wpas_p2p_scan_res_join(wpa_s, NULL);
5150 return;
5151 }
5152 wpabuf_put_buf(ies, wps_ie);
5153 wpabuf_free(wps_ie);
5154
5155 bands = wpas_get_bands(wpa_s, freqs);
5156 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5157
5158 params.p2p_probe = 1;
5159 params.extra_ies = wpabuf_head(ies);
5160 params.extra_ies_len = wpabuf_len(ies);
5161
5162 if (wpa_s->clear_driver_scan_cache) {
5163 wpa_printf(MSG_DEBUG,
5164 "Request driver to clear scan cache due to local BSS flush");
5165 params.only_new_results = 1;
5166 }
5167
5168 /*
5169 * Run a scan to update BSS table and start Provision Discovery once
5170 * the new scan results become available.
5171 */
5172 ret = wpa_drv_scan(wpa_s, ¶ms);
5173 if (!ret) {
5174 os_get_reltime(&wpa_s->scan_trigger_time);
5175 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5176 wpa_s->own_scan_requested = 1;
5177 wpa_s->clear_driver_scan_cache = 0;
5178 }
5179
5180 wpabuf_free(ies);
5181
5182 if (ret) {
5183 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5184 "try again later");
5185 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5186 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5187 wpas_p2p_check_join_scan_limit(wpa_s);
5188 }
5189 }
5190
5191
wpas_p2p_join_scan(void * eloop_ctx,void * timeout_ctx)5192 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5193 {
5194 struct wpa_supplicant *wpa_s = eloop_ctx;
5195 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5196 }
5197
5198
wpas_p2p_join(struct wpa_supplicant * wpa_s,const u8 * iface_addr,const u8 * dev_addr,enum p2p_wps_method wps_method,int auto_join,int op_freq,const u8 * ssid,size_t ssid_len)5199 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5200 const u8 *dev_addr, enum p2p_wps_method wps_method,
5201 int auto_join, int op_freq,
5202 const u8 *ssid, size_t ssid_len)
5203 {
5204 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5205 MACSTR " dev " MACSTR " op_freq=%d)%s",
5206 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5207 auto_join ? " (auto_join)" : "");
5208 if (ssid && ssid_len) {
5209 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5210 wpa_ssid_txt(ssid, ssid_len));
5211 }
5212
5213 wpa_s->p2p_auto_pd = 0;
5214 wpa_s->p2p_auto_join = !!auto_join;
5215 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5216 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5217 wpa_s->pending_join_wps_method = wps_method;
5218
5219 /* Make sure we are not running find during connection establishment */
5220 wpas_p2p_stop_find(wpa_s);
5221
5222 wpa_s->p2p_join_scan_count = 0;
5223 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5224 return 0;
5225 }
5226
5227
wpas_p2p_join_start(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)5228 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5229 const u8 *ssid, size_t ssid_len)
5230 {
5231 struct wpa_supplicant *group;
5232 struct p2p_go_neg_results res;
5233 struct wpa_bss *bss;
5234
5235 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5236 if (group == NULL)
5237 return -1;
5238 if (group != wpa_s) {
5239 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5240 sizeof(group->p2p_pin));
5241 group->p2p_wps_method = wpa_s->p2p_wps_method;
5242 }
5243
5244 /*
5245 * Need to mark the current interface for p2p_group_formation
5246 * when a separate group interface is not used. This is needed
5247 * to allow p2p_cancel stop a pending p2p_connect-join.
5248 * wpas_p2p_init_group_interface() addresses this for the case
5249 * where a separate group interface is used.
5250 */
5251 if (group == wpa_s->parent)
5252 wpa_s->global->p2p_group_formation = group;
5253
5254 group->p2p_in_provisioning = 1;
5255 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5256
5257 os_memset(&res, 0, sizeof(res));
5258 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5259 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5260 ETH_ALEN);
5261 res.wps_method = wpa_s->pending_join_wps_method;
5262 if (freq && ssid && ssid_len) {
5263 res.freq = freq;
5264 res.ssid_len = ssid_len;
5265 os_memcpy(res.ssid, ssid, ssid_len);
5266 } else {
5267 if (ssid && ssid_len) {
5268 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5269 ssid, ssid_len);
5270 } else {
5271 bss = wpa_bss_get_bssid_latest(
5272 wpa_s, wpa_s->pending_join_iface_addr);
5273 }
5274 if (bss) {
5275 res.freq = bss->freq;
5276 res.ssid_len = bss->ssid_len;
5277 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5278 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5279 bss->freq,
5280 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5281 } else if (ssid && ssid_len) {
5282 res.ssid_len = ssid_len;
5283 os_memcpy(res.ssid, ssid, ssid_len);
5284 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5285 wpa_ssid_txt(ssid, ssid_len));
5286 }
5287 }
5288
5289 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5290 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5291 "starting client");
5292 wpa_drv_cancel_remain_on_channel(wpa_s);
5293 wpa_s->off_channel_freq = 0;
5294 wpa_s->roc_waiting_drv_freq = 0;
5295 }
5296 wpas_start_wps_enrollee(group, &res);
5297
5298 /*
5299 * Allow a longer timeout for join-a-running-group than normal 15
5300 * second group formation timeout since the GO may not have authorized
5301 * our connection yet.
5302 */
5303 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5304 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5305 wpa_s, NULL);
5306
5307 return 0;
5308 }
5309
5310
wpas_p2p_setup_freqs(struct wpa_supplicant * wpa_s,int freq,int * force_freq,int * pref_freq,int go,unsigned int * pref_freq_list,unsigned int * num_pref_freq)5311 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5312 int *force_freq, int *pref_freq, int go,
5313 unsigned int *pref_freq_list,
5314 unsigned int *num_pref_freq)
5315 {
5316 struct wpa_used_freq_data *freqs;
5317 int res, best_freq, num_unused;
5318 unsigned int freq_in_use = 0, num, i, max_pref_freq;
5319
5320 max_pref_freq = *num_pref_freq;
5321 *num_pref_freq = 0;
5322
5323 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5324 sizeof(struct wpa_used_freq_data));
5325 if (!freqs)
5326 return -1;
5327
5328 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5329 wpa_s->num_multichan_concurrent);
5330
5331 /*
5332 * It is possible that the total number of used frequencies is bigger
5333 * than the number of frequencies used for P2P, so get the system wide
5334 * number of unused frequencies.
5335 */
5336 num_unused = wpas_p2p_num_unused_channels(wpa_s);
5337
5338 wpa_printf(MSG_DEBUG,
5339 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5340 freq, wpa_s->num_multichan_concurrent, num, num_unused);
5341
5342 if (freq > 0) {
5343 int ret;
5344 if (go)
5345 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5346 else
5347 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5348 if (!ret) {
5349 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5350 ieee80211_is_dfs(freq, wpa_s->hw.modes,
5351 wpa_s->hw.num_modes)) {
5352 /*
5353 * If freq is a DFS channel and DFS is offloaded
5354 * to the driver, allow P2P GO to use it.
5355 */
5356 wpa_printf(MSG_DEBUG,
5357 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5358 freq);
5359 } else {
5360 wpa_printf(MSG_DEBUG,
5361 "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5362 freq);
5363 res = -3;
5364 goto exit_free;
5365 }
5366 }
5367
5368 for (i = 0; i < num; i++) {
5369 if (freqs[i].freq == freq)
5370 freq_in_use = 1;
5371 }
5372
5373 if (num_unused <= 0 && !freq_in_use) {
5374 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5375 freq);
5376 res = -2;
5377 goto exit_free;
5378 }
5379 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5380 "requested channel (%u MHz)", freq);
5381 *force_freq = freq;
5382 goto exit_ok;
5383 }
5384
5385 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5386
5387 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5388 enum wpa_driver_if_type iface_type;
5389
5390 if (go)
5391 iface_type = WPA_IF_P2P_GO;
5392 else
5393 iface_type = WPA_IF_P2P_CLIENT;
5394
5395 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5396 best_freq, go);
5397
5398 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5399 &max_pref_freq,
5400 pref_freq_list);
5401 if (!res && max_pref_freq > 0) {
5402 *num_pref_freq = max_pref_freq;
5403 i = 0;
5404 while (i < *num_pref_freq &&
5405 (!p2p_supported_freq(wpa_s->global->p2p,
5406 pref_freq_list[i]) ||
5407 wpas_p2p_disallowed_freq(wpa_s->global,
5408 pref_freq_list[i]))) {
5409 wpa_printf(MSG_DEBUG,
5410 "P2P: preferred_freq_list[%d]=%d is disallowed",
5411 i, pref_freq_list[i]);
5412 i++;
5413 }
5414 if (i != *num_pref_freq) {
5415 best_freq = pref_freq_list[i];
5416 wpa_printf(MSG_DEBUG,
5417 "P2P: Using preferred_freq_list[%d]=%d",
5418 i, best_freq);
5419 } else {
5420 wpa_printf(MSG_DEBUG,
5421 "P2P: All driver preferred frequencies are disallowed for P2P use");
5422 *num_pref_freq = 0;
5423 }
5424 } else {
5425 wpa_printf(MSG_DEBUG,
5426 "P2P: No preferred frequency list available");
5427 }
5428 }
5429
5430 /* We have a candidate frequency to use */
5431 if (best_freq > 0) {
5432 if (*pref_freq == 0 && num_unused > 0) {
5433 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5434 best_freq);
5435 *pref_freq = best_freq;
5436 } else {
5437 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5438 best_freq);
5439 *force_freq = best_freq;
5440 }
5441 } else if (num_unused > 0) {
5442 wpa_printf(MSG_DEBUG,
5443 "P2P: Current operating channels are not available for P2P. Try to use another channel");
5444 *force_freq = 0;
5445 } else {
5446 wpa_printf(MSG_DEBUG,
5447 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5448 res = -2;
5449 goto exit_free;
5450 }
5451
5452 exit_ok:
5453 res = 0;
5454 exit_free:
5455 os_free(freqs);
5456 return res;
5457 }
5458
5459
5460 /**
5461 * wpas_p2p_connect - Request P2P Group Formation to be started
5462 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5463 * @peer_addr: Address of the peer P2P Device
5464 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5465 * @persistent_group: Whether to create a persistent group
5466 * @auto_join: Whether to select join vs. GO Negotiation automatically
5467 * @join: Whether to join an existing group (as a client) instead of starting
5468 * Group Owner negotiation; @peer_addr is BSSID in that case
5469 * @auth: Whether to only authorize the connection instead of doing that and
5470 * initiating Group Owner negotiation
5471 * @go_intent: GO Intent or -1 to use default
5472 * @freq: Frequency for the group or 0 for auto-selection
5473 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5474 * @persistent_id: Persistent group credentials to use for forcing GO
5475 * parameters or -1 to generate new values (SSID/passphrase)
5476 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5477 * interoperability workaround when initiating group formation
5478 * @ht40: Start GO with 40 MHz channel width
5479 * @vht: Start GO with VHT support
5480 * @vht_chwidth: Channel width supported by GO operating with VHT support
5481 * (CHANWIDTH_*).
5482 * @group_ssid: Specific Group SSID for join or %NULL if not set
5483 * @group_ssid_len: Length of @group_ssid in octets
5484 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5485 * failure, -2 on failure due to channel not currently available,
5486 * -3 if forced channel is not supported
5487 */
wpas_p2p_connect(struct wpa_supplicant * wpa_s,const u8 * peer_addr,const char * pin,enum p2p_wps_method wps_method,int persistent_group,int auto_join,int join,int auth,int go_intent,int freq,unsigned int vht_center_freq2,int persistent_id,int pd,int ht40,int vht,unsigned int vht_chwidth,int he,const u8 * group_ssid,size_t group_ssid_len)5488 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5489 const char *pin, enum p2p_wps_method wps_method,
5490 int persistent_group, int auto_join, int join, int auth,
5491 int go_intent, int freq, unsigned int vht_center_freq2,
5492 int persistent_id, int pd, int ht40, int vht,
5493 unsigned int vht_chwidth, int he, const u8 *group_ssid,
5494 size_t group_ssid_len)
5495 {
5496 int force_freq = 0, pref_freq = 0;
5497 int ret = 0, res;
5498 enum wpa_driver_if_type iftype;
5499 const u8 *if_addr;
5500 struct wpa_ssid *ssid = NULL;
5501 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5502
5503 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5504 return -1;
5505
5506 if (persistent_id >= 0) {
5507 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5508 if (ssid == NULL || ssid->disabled != 2 ||
5509 ssid->mode != WPAS_MODE_P2P_GO)
5510 return -1;
5511 }
5512
5513 os_free(wpa_s->global->add_psk);
5514 wpa_s->global->add_psk = NULL;
5515
5516 wpa_s->global->p2p_fail_on_wps_complete = 0;
5517 wpa_s->global->pending_p2ps_group = 0;
5518 wpa_s->global->pending_p2ps_group_freq = 0;
5519 wpa_s->p2ps_method_config_any = 0;
5520
5521 if (go_intent < 0)
5522 go_intent = wpa_s->conf->p2p_go_intent;
5523
5524 if (!auth)
5525 wpa_s->p2p_long_listen = 0;
5526
5527 wpa_s->p2p_wps_method = wps_method;
5528 wpa_s->p2p_persistent_group = !!persistent_group;
5529 wpa_s->p2p_persistent_id = persistent_id;
5530 wpa_s->p2p_go_intent = go_intent;
5531 wpa_s->p2p_connect_freq = freq;
5532 wpa_s->p2p_fallback_to_go_neg = 0;
5533 wpa_s->p2p_pd_before_go_neg = !!pd;
5534 wpa_s->p2p_go_ht40 = !!ht40;
5535 wpa_s->p2p_go_vht = !!vht;
5536 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5537 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5538 wpa_s->p2p_go_he = !!he;
5539
5540 if (pin)
5541 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5542 else if (wps_method == WPS_PIN_DISPLAY) {
5543 if (wps_generate_pin((unsigned int *) &ret) < 0)
5544 return -1;
5545 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5546 "%08d", ret);
5547 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5548 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5549 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5550 wpa_s->p2p_pin);
5551 } else if (wps_method == WPS_P2PS) {
5552 /* Force the P2Ps default PIN to be used */
5553 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin));
5554 } else
5555 wpa_s->p2p_pin[0] = '\0';
5556
5557 if (join || auto_join) {
5558 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5559 if (auth) {
5560 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5561 "connect a running group from " MACSTR,
5562 MAC2STR(peer_addr));
5563 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5564 return ret;
5565 }
5566 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5567 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5568 iface_addr) < 0) {
5569 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5570 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5571 dev_addr);
5572 }
5573 if (auto_join) {
5574 os_get_reltime(&wpa_s->p2p_auto_started);
5575 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5576 "%ld.%06ld",
5577 wpa_s->p2p_auto_started.sec,
5578 wpa_s->p2p_auto_started.usec);
5579 }
5580 wpa_s->user_initiated_pd = 1;
5581 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5582 auto_join, freq,
5583 group_ssid, group_ssid_len) < 0)
5584 return -1;
5585 return ret;
5586 }
5587
5588 size = P2P_MAX_PREF_CHANNELS;
5589 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5590 go_intent == 15, pref_freq_list, &size);
5591 if (res)
5592 return res;
5593 wpas_p2p_set_own_freq_preference(wpa_s,
5594 force_freq ? force_freq : pref_freq);
5595
5596 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5597
5598 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5599
5600 if (wpa_s->create_p2p_iface) {
5601 /* Prepare to add a new interface for the group */
5602 iftype = WPA_IF_P2P_GROUP;
5603 if (go_intent == 15)
5604 iftype = WPA_IF_P2P_GO;
5605 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5606 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5607 "interface for the group");
5608 return -1;
5609 }
5610
5611 if_addr = wpa_s->pending_interface_addr;
5612 } else {
5613 if (wpa_s->p2p_mgmt)
5614 if_addr = wpa_s->parent->own_addr;
5615 else
5616 if_addr = wpa_s->own_addr;
5617 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5618 }
5619
5620 if (auth) {
5621 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5622 go_intent, if_addr,
5623 force_freq, persistent_group, ssid,
5624 pref_freq) < 0)
5625 return -1;
5626 return ret;
5627 }
5628
5629 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5630 go_intent, if_addr, force_freq,
5631 persistent_group, ssid, pref_freq) < 0) {
5632 if (wpa_s->create_p2p_iface)
5633 wpas_p2p_remove_pending_group_interface(wpa_s);
5634 return -1;
5635 }
5636 return ret;
5637 }
5638
5639
5640 /**
5641 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5642 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5643 * @freq: Frequency of the channel in MHz
5644 * @duration: Duration of the stay on the channel in milliseconds
5645 *
5646 * This callback is called when the driver indicates that it has started the
5647 * requested remain-on-channel duration.
5648 */
wpas_p2p_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq,unsigned int duration)5649 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5650 unsigned int freq, unsigned int duration)
5651 {
5652 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5653 return;
5654 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)",
5655 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5656 wpa_s->roc_waiting_drv_freq, freq, duration);
5657 if (wpa_s->off_channel_freq &&
5658 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5659 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5660 wpa_s->pending_listen_duration);
5661 wpa_s->pending_listen_freq = 0;
5662 } else {
5663 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5664 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5665 freq, duration);
5666 }
5667 }
5668
5669
wpas_p2p_listen_start(struct wpa_supplicant * wpa_s,unsigned int timeout)5670 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5671 {
5672 /* Limit maximum Listen state time based on driver limitation. */
5673 if (timeout > wpa_s->max_remain_on_chan)
5674 timeout = wpa_s->max_remain_on_chan;
5675
5676 return p2p_listen(wpa_s->global->p2p, timeout);
5677 }
5678
5679
5680 /**
5681 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5682 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5683 * @freq: Frequency of the channel in MHz
5684 *
5685 * This callback is called when the driver indicates that a remain-on-channel
5686 * operation has been completed, i.e., the duration on the requested channel
5687 * has timed out.
5688 */
wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq)5689 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5690 unsigned int freq)
5691 {
5692 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5693 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5694 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5695 wpas_p2p_listen_work_done(wpa_s);
5696 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5697 return;
5698 if (wpa_s->p2p_long_listen > 0)
5699 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5700 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5701 return; /* P2P module started a new operation */
5702 if (offchannel_pending_action_tx(wpa_s))
5703 return;
5704 if (wpa_s->p2p_long_listen > 0) {
5705 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5706 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5707 } else {
5708 /*
5709 * When listen duration is over, stop listen & update p2p_state
5710 * to IDLE.
5711 */
5712 p2p_stop_listen(wpa_s->global->p2p);
5713 }
5714 }
5715
5716
5717 /**
5718 * wpas_p2p_group_remove - Remove a P2P group
5719 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5720 * @ifname: Network interface name of the group interface or "*" to remove all
5721 * groups
5722 * Returns: 0 on success, -1 on failure
5723 *
5724 * This function is used to remove a P2P group. This can be used to disconnect
5725 * from a group in which the local end is a P2P Client or to end a P2P Group in
5726 * case the local end is the Group Owner. If a virtual network interface was
5727 * created for this group, that interface will be removed. Otherwise, only the
5728 * configured P2P group network will be removed from the interface.
5729 */
wpas_p2p_group_remove(struct wpa_supplicant * wpa_s,const char * ifname)5730 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5731 {
5732 struct wpa_global *global = wpa_s->global;
5733 struct wpa_supplicant *calling_wpa_s = wpa_s;
5734
5735 if (os_strcmp(ifname, "*") == 0) {
5736 struct wpa_supplicant *prev;
5737 wpa_s = global->ifaces;
5738 while (wpa_s) {
5739 prev = wpa_s;
5740 wpa_s = wpa_s->next;
5741 if (prev->p2p_group_interface !=
5742 NOT_P2P_GROUP_INTERFACE ||
5743 (prev->current_ssid &&
5744 prev->current_ssid->p2p_group))
5745 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5746 }
5747 return 0;
5748 }
5749
5750 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5751 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5752 break;
5753 }
5754
5755 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5756 }
5757
5758
wpas_p2p_select_go_freq(struct wpa_supplicant * wpa_s,int freq)5759 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5760 {
5761 unsigned int r;
5762
5763 if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5764 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5765 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5766 int res;
5767
5768 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5769 &size, pref_freq_list);
5770 if (!res && size > 0) {
5771 i = 0;
5772 while (i < size &&
5773 (!p2p_supported_freq(wpa_s->global->p2p,
5774 pref_freq_list[i]) ||
5775 wpas_p2p_disallowed_freq(wpa_s->global,
5776 pref_freq_list[i]))) {
5777 wpa_printf(MSG_DEBUG,
5778 "P2P: preferred_freq_list[%d]=%d is disallowed",
5779 i, pref_freq_list[i]);
5780 i++;
5781 }
5782 if (i != size) {
5783 freq = pref_freq_list[i];
5784 wpa_printf(MSG_DEBUG,
5785 "P2P: Using preferred_freq_list[%d]=%d",
5786 i, freq);
5787 } else {
5788 wpa_printf(MSG_DEBUG,
5789 "P2P: All driver preferred frequencies are disallowed for P2P use");
5790 }
5791 } else {
5792 wpa_printf(MSG_DEBUG,
5793 "P2P: No preferred frequency list available");
5794 }
5795 }
5796
5797 if (freq == 2) {
5798 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5799 "band");
5800 if (wpa_s->best_24_freq > 0 &&
5801 p2p_supported_freq_go(wpa_s->global->p2p,
5802 wpa_s->best_24_freq)) {
5803 freq = wpa_s->best_24_freq;
5804 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5805 "channel: %d MHz", freq);
5806 } else {
5807 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5808 return -1;
5809 freq = 2412 + (r % 3) * 25;
5810 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5811 "channel: %d MHz", freq);
5812 }
5813 }
5814
5815 if (freq == 5) {
5816 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5817 "band");
5818 if (wpa_s->best_5_freq > 0 &&
5819 p2p_supported_freq_go(wpa_s->global->p2p,
5820 wpa_s->best_5_freq)) {
5821 freq = wpa_s->best_5_freq;
5822 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5823 "channel: %d MHz", freq);
5824 } else {
5825 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5826 return -1;
5827 freq = 5180 + (r % 4) * 20;
5828 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5829 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5830 "5 GHz channel for P2P group");
5831 return -1;
5832 }
5833 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5834 "channel: %d MHz", freq);
5835 }
5836 }
5837
5838 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5839 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5840 ieee80211_is_dfs(freq, wpa_s->hw.modes,
5841 wpa_s->hw.num_modes)) {
5842 /*
5843 * If freq is a DFS channel and DFS is offloaded to the
5844 * driver, allow P2P GO to use it.
5845 */
5846 wpa_printf(MSG_DEBUG, "P2P: "
5847 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5848 __func__, freq);
5849 return freq;
5850 }
5851 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5852 "(%u MHz) is not supported for P2P uses",
5853 freq);
5854 return -1;
5855 }
5856
5857 return freq;
5858 }
5859
5860
wpas_p2p_supported_freq_go(struct wpa_supplicant * wpa_s,const struct p2p_channels * channels,int freq)5861 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5862 const struct p2p_channels *channels,
5863 int freq)
5864 {
5865 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5866 p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5867 freq_included(wpa_s, channels, freq))
5868 return 1;
5869 return 0;
5870 }
5871
5872
wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,const struct p2p_channels * channels)5873 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5874 struct p2p_go_neg_results *params,
5875 const struct p2p_channels *channels)
5876 {
5877 unsigned int i, r;
5878
5879 /* try all channels in operating class 115 */
5880 for (i = 0; i < 4; i++) {
5881 params->freq = 5180 + i * 20;
5882 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5883 freq_included(wpa_s, channels, params->freq) &&
5884 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5885 goto out;
5886 }
5887
5888 /* try all channels in operating class 124 */
5889 for (i = 0; i < 4; i++) {
5890 params->freq = 5745 + i * 20;
5891 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5892 freq_included(wpa_s, channels, params->freq) &&
5893 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5894 goto out;
5895 }
5896
5897 /* try social channel class 180 channel 2 */
5898 params->freq = 58320 + 1 * 2160;
5899 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5900 freq_included(wpa_s, channels, params->freq) &&
5901 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5902 goto out;
5903
5904 /* try all channels in reg. class 180 */
5905 for (i = 0; i < 4; i++) {
5906 params->freq = 58320 + i * 2160;
5907 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5908 freq_included(wpa_s, channels, params->freq) &&
5909 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5910 goto out;
5911 }
5912
5913 /* try some random selection of the social channels */
5914 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5915 return;
5916
5917 for (i = 0; i < 3; i++) {
5918 params->freq = 2412 + ((r + i) % 3) * 25;
5919 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5920 goto out;
5921 }
5922
5923 /* try all other channels in operating class 81 */
5924 for (i = 0; i < 11; i++) {
5925 params->freq = 2412 + i * 5;
5926
5927 /* skip social channels; covered in the previous loop */
5928 if (params->freq == 2412 ||
5929 params->freq == 2437 ||
5930 params->freq == 2462)
5931 continue;
5932
5933 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5934 goto out;
5935 }
5936
5937 params->freq = 0;
5938 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5939 return;
5940 out:
5941 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5942 params->freq);
5943 }
5944
5945
wpas_same_band(int freq1,int freq2)5946 static int wpas_same_band(int freq1, int freq2)
5947 {
5948 enum hostapd_hw_mode mode1, mode2;
5949 u8 chan1, chan2;
5950
5951 mode1 = ieee80211_freq_to_chan(freq1, &chan1);
5952 mode2 = ieee80211_freq_to_chan(freq2, &chan2);
5953 if (mode1 == NUM_HOSTAPD_MODES)
5954 return 0;
5955 return mode1 == mode2;
5956 }
5957
5958
wpas_p2p_init_go_params(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,int freq,int vht_center_freq2,int ht40,int vht,int max_oper_chwidth,int he,const struct p2p_channels * channels)5959 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5960 struct p2p_go_neg_results *params,
5961 int freq, int vht_center_freq2, int ht40,
5962 int vht, int max_oper_chwidth, int he,
5963 const struct p2p_channels *channels)
5964 {
5965 struct wpa_used_freq_data *freqs;
5966 unsigned int cand;
5967 unsigned int num, i;
5968 int ignore_no_freqs = 0;
5969 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5970
5971 os_memset(params, 0, sizeof(*params));
5972 params->role_go = 1;
5973 params->ht40 = ht40;
5974 params->vht = vht;
5975 params->he = he;
5976 params->max_oper_chwidth = max_oper_chwidth;
5977 params->vht_center_freq2 = vht_center_freq2;
5978
5979 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5980 sizeof(struct wpa_used_freq_data));
5981 if (!freqs)
5982 return -1;
5983
5984 num = get_shared_radio_freqs_data(wpa_s, freqs,
5985 wpa_s->num_multichan_concurrent);
5986
5987 if (wpa_s->current_ssid &&
5988 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5989 wpa_s->wpa_state == WPA_COMPLETED) {
5990 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5991 __func__);
5992
5993 /*
5994 * If the frequency selection is done for an active P2P GO that
5995 * is not sharing a frequency, allow to select a new frequency
5996 * even if there are no unused frequencies as we are about to
5997 * move the P2P GO so its frequency can be re-used.
5998 */
5999 for (i = 0; i < num; i++) {
6000 if (freqs[i].freq == wpa_s->current_ssid->frequency &&
6001 freqs[i].flags == 0) {
6002 ignore_no_freqs = 1;
6003 break;
6004 }
6005 }
6006 }
6007
6008 /* try using the forced freq */
6009 if (freq) {
6010 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) ||
6011 !freq_included(wpa_s, channels, freq)) {
6012 wpa_printf(MSG_DEBUG,
6013 "P2P: Forced GO freq %d MHz disallowed",
6014 freq);
6015 goto fail;
6016 }
6017 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
6018 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6019 ieee80211_is_dfs(freq, wpa_s->hw.modes,
6020 wpa_s->hw.num_modes)) {
6021 /*
6022 * If freq is a DFS channel and DFS is offloaded
6023 * to the driver, allow P2P GO to use it.
6024 */
6025 wpa_printf(MSG_DEBUG,
6026 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded",
6027 __func__, freq);
6028 } else {
6029 wpa_printf(MSG_DEBUG,
6030 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses",
6031 freq);
6032 goto fail;
6033 }
6034 }
6035
6036 for (i = 0; i < num; i++) {
6037 if (freqs[i].freq == freq) {
6038 wpa_printf(MSG_DEBUG,
6039 "P2P: forced freq (%d MHz) is also shared",
6040 freq);
6041 params->freq = freq;
6042 goto success;
6043 }
6044 }
6045
6046 if (!ignore_no_freqs && !unused_channels) {
6047 wpa_printf(MSG_DEBUG,
6048 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
6049 freq);
6050 goto fail;
6051 }
6052
6053 wpa_printf(MSG_DEBUG,
6054 "P2P: force GO freq (%d MHz) on a free channel",
6055 freq);
6056 params->freq = freq;
6057 goto success;
6058 }
6059
6060 /* consider using one of the shared frequencies */
6061 if (num &&
6062 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
6063 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
6064 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6065 wpa_printf(MSG_DEBUG,
6066 "P2P: Use shared freq (%d MHz) for GO",
6067 cand);
6068 params->freq = cand;
6069 goto success;
6070 }
6071
6072 /* try using one of the shared freqs */
6073 for (i = 0; i < num; i++) {
6074 if (wpas_p2p_supported_freq_go(wpa_s, channels,
6075 freqs[i].freq)) {
6076 wpa_printf(MSG_DEBUG,
6077 "P2P: Use shared freq (%d MHz) for GO",
6078 freqs[i].freq);
6079 params->freq = freqs[i].freq;
6080 goto success;
6081 }
6082 }
6083 }
6084
6085 if (!ignore_no_freqs && !unused_channels) {
6086 wpa_printf(MSG_DEBUG,
6087 "P2P: Cannot force GO on any of the channels we are already using");
6088 goto fail;
6089 }
6090
6091 /* try using the setting from the configuration file */
6092 if (wpa_s->conf->p2p_oper_reg_class == 81 &&
6093 wpa_s->conf->p2p_oper_channel >= 1 &&
6094 wpa_s->conf->p2p_oper_channel <= 11 &&
6095 wpas_p2p_supported_freq_go(
6096 wpa_s, channels,
6097 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
6098 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
6099 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6100 "frequency %d MHz", params->freq);
6101 goto success;
6102 }
6103
6104 if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
6105 wpa_s->conf->p2p_oper_reg_class == 116 ||
6106 wpa_s->conf->p2p_oper_reg_class == 117 ||
6107 wpa_s->conf->p2p_oper_reg_class == 124 ||
6108 wpa_s->conf->p2p_oper_reg_class == 125 ||
6109 wpa_s->conf->p2p_oper_reg_class == 126 ||
6110 wpa_s->conf->p2p_oper_reg_class == 127) &&
6111 wpas_p2p_supported_freq_go(wpa_s, channels,
6112 5000 +
6113 5 * wpa_s->conf->p2p_oper_channel)) {
6114 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
6115 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6116 "frequency %d MHz", params->freq);
6117 goto success;
6118 }
6119
6120 /* Try using best channels */
6121 if (wpa_s->conf->p2p_oper_channel == 0 &&
6122 wpa_s->best_overall_freq > 0 &&
6123 wpas_p2p_supported_freq_go(wpa_s, channels,
6124 wpa_s->best_overall_freq)) {
6125 params->freq = wpa_s->best_overall_freq;
6126 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
6127 "channel %d MHz", params->freq);
6128 goto success;
6129 }
6130
6131 if (wpa_s->conf->p2p_oper_channel == 0 &&
6132 wpa_s->best_24_freq > 0 &&
6133 wpas_p2p_supported_freq_go(wpa_s, channels,
6134 wpa_s->best_24_freq)) {
6135 params->freq = wpa_s->best_24_freq;
6136 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
6137 "channel %d MHz", params->freq);
6138 goto success;
6139 }
6140
6141 if (wpa_s->conf->p2p_oper_channel == 0 &&
6142 wpa_s->best_5_freq > 0 &&
6143 wpas_p2p_supported_freq_go(wpa_s, channels,
6144 wpa_s->best_5_freq)) {
6145 params->freq = wpa_s->best_5_freq;
6146 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
6147 "channel %d MHz", params->freq);
6148 goto success;
6149 }
6150
6151 /* try using preferred channels */
6152 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
6153 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6154 params->freq = cand;
6155 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6156 "channels", params->freq);
6157 goto success;
6158 }
6159
6160 /* Try using a channel that allows VHT to be used with 80 MHz */
6161 if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) {
6162 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6163 enum hostapd_hw_mode mode;
6164 struct hostapd_hw_modes *hwmode;
6165 u8 chan;
6166
6167 cand = wpa_s->p2p_group_common_freqs[i];
6168 mode = ieee80211_freq_to_chan(cand, &chan);
6169 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6170 mode);
6171 if (!hwmode ||
6172 wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6173 BW80) != ALLOWED)
6174 continue;
6175 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6176 params->freq = cand;
6177 wpa_printf(MSG_DEBUG,
6178 "P2P: Use freq %d MHz common with the peer and allowing VHT80",
6179 params->freq);
6180 goto success;
6181 }
6182 }
6183 }
6184
6185 /* Try using a channel that allows HT to be used with 40 MHz on the same
6186 * band so that CSA can be used */
6187 if (wpa_s->current_ssid && wpa_s->hw.modes &&
6188 wpa_s->p2p_group_common_freqs) {
6189 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6190 enum hostapd_hw_mode mode;
6191 struct hostapd_hw_modes *hwmode;
6192 u8 chan;
6193
6194 cand = wpa_s->p2p_group_common_freqs[i];
6195 mode = ieee80211_freq_to_chan(cand, &chan);
6196 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6197 mode);
6198 if (!wpas_same_band(wpa_s->current_ssid->frequency,
6199 cand) ||
6200 !hwmode ||
6201 (wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6202 BW40MINUS) != ALLOWED &&
6203 wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6204 BW40PLUS) != ALLOWED))
6205 continue;
6206 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6207 params->freq = cand;
6208 wpa_printf(MSG_DEBUG,
6209 "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band",
6210 params->freq);
6211 goto success;
6212 }
6213 }
6214 }
6215
6216 /* Try using one of the group common freqs on the same band so that CSA
6217 * can be used */
6218 if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) {
6219 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6220 cand = wpa_s->p2p_group_common_freqs[i];
6221 if (!wpas_same_band(wpa_s->current_ssid->frequency,
6222 cand))
6223 continue;
6224 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6225 params->freq = cand;
6226 wpa_printf(MSG_DEBUG,
6227 "P2P: Use freq %d MHz common with the peer and maintaining same band",
6228 params->freq);
6229 goto success;
6230 }
6231 }
6232 }
6233
6234 /* Try using one of the group common freqs */
6235 if (wpa_s->p2p_group_common_freqs) {
6236 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6237 cand = wpa_s->p2p_group_common_freqs[i];
6238 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6239 params->freq = cand;
6240 wpa_printf(MSG_DEBUG,
6241 "P2P: Use freq %d MHz common with the peer",
6242 params->freq);
6243 goto success;
6244 }
6245 }
6246 }
6247
6248 /* no preference, select some channel */
6249 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
6250
6251 if (params->freq == 0) {
6252 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
6253 goto fail;
6254 }
6255
6256 success:
6257 os_free(freqs);
6258 return 0;
6259 fail:
6260 os_free(freqs);
6261 return -1;
6262 }
6263
6264
6265 static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant * wpa_s,int addr_allocated,int go)6266 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6267 int go)
6268 {
6269 struct wpa_supplicant *group_wpa_s;
6270
6271 if (!wpas_p2p_create_iface(wpa_s)) {
6272 if (wpa_s->p2p_mgmt) {
6273 /*
6274 * We may be called on the p2p_dev interface which
6275 * cannot be used for group operations, so always use
6276 * the primary interface.
6277 */
6278 wpa_s->parent->p2pdev = wpa_s;
6279 wpa_s = wpa_s->parent;
6280 }
6281 wpa_dbg(wpa_s, MSG_DEBUG,
6282 "P2P: Use primary interface for group operations");
6283 wpa_s->p2p_first_connection_timeout = 0;
6284 if (wpa_s != wpa_s->p2pdev)
6285 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6286 return wpa_s;
6287 }
6288
6289 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6290 WPA_IF_P2P_CLIENT) < 0) {
6291 wpa_msg_global(wpa_s, MSG_ERROR,
6292 "P2P: Failed to add group interface");
6293 return NULL;
6294 }
6295 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6296 if (group_wpa_s == NULL) {
6297 wpa_msg_global(wpa_s, MSG_ERROR,
6298 "P2P: Failed to initialize group interface");
6299 wpas_p2p_remove_pending_group_interface(wpa_s);
6300 return NULL;
6301 }
6302
6303 if (go && wpa_s->p2p_go_do_acs) {
6304 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs;
6305 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band;
6306 wpa_s->p2p_go_do_acs = 0;
6307 }
6308
6309 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6310 group_wpa_s->ifname);
6311 group_wpa_s->p2p_first_connection_timeout = 0;
6312 return group_wpa_s;
6313 }
6314
6315
6316 /**
6317 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6318 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6319 * @persistent_group: Whether to create a persistent group
6320 * @freq: Frequency for the group or 0 to indicate no hardcoding
6321 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6322 * @ht40: Start GO with 40 MHz channel width
6323 * @vht: Start GO with VHT support
6324 * @vht_chwidth: channel bandwidth for GO operating with VHT support
6325 * Returns: 0 on success, -1 on failure
6326 *
6327 * This function creates a new P2P group with the local end as the Group Owner,
6328 * i.e., without using Group Owner Negotiation.
6329 */
wpas_p2p_group_add(struct wpa_supplicant * wpa_s,int persistent_group,int freq,int vht_center_freq2,int ht40,int vht,int max_oper_chwidth,int he)6330 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6331 int freq, int vht_center_freq2, int ht40, int vht,
6332 int max_oper_chwidth, int he)
6333 {
6334 struct p2p_go_neg_results params;
6335
6336 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6337 return -1;
6338
6339 os_free(wpa_s->global->add_psk);
6340 wpa_s->global->add_psk = NULL;
6341
6342 /* Make sure we are not running find during connection establishment */
6343 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6344 wpas_p2p_stop_find_oper(wpa_s);
6345
6346 if (!wpa_s->p2p_go_do_acs) {
6347 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6348 if (freq < 0)
6349 return -1;
6350 }
6351
6352 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2,
6353 ht40, vht, max_oper_chwidth, he, NULL))
6354 return -1;
6355
6356 p2p_go_params(wpa_s->global->p2p, ¶ms);
6357 params.persistent_group = persistent_group;
6358
6359 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6360 if (wpa_s == NULL)
6361 return -1;
6362 wpas_start_wps_go(wpa_s, ¶ms, 0);
6363
6364 return 0;
6365 }
6366
6367
wpas_start_p2p_client(struct wpa_supplicant * wpa_s,struct wpa_ssid * params,int addr_allocated,int freq,int force_scan)6368 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6369 struct wpa_ssid *params, int addr_allocated,
6370 int freq, int force_scan)
6371 {
6372 struct wpa_ssid *ssid;
6373
6374 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6375 if (wpa_s == NULL)
6376 return -1;
6377 if (force_scan)
6378 os_get_reltime(&wpa_s->scan_min_time);
6379 wpa_s->p2p_last_4way_hs_fail = NULL;
6380
6381 wpa_supplicant_ap_deinit(wpa_s);
6382
6383 ssid = wpa_config_add_network(wpa_s->conf);
6384 if (ssid == NULL)
6385 return -1;
6386 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6387 wpa_config_set_network_defaults(ssid);
6388 ssid->temporary = 1;
6389 ssid->proto = WPA_PROTO_RSN;
6390 ssid->pbss = params->pbss;
6391 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6392 WPA_CIPHER_CCMP;
6393 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6394 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6395 ssid->ssid = os_malloc(params->ssid_len);
6396 if (ssid->ssid == NULL) {
6397 wpa_config_remove_network(wpa_s->conf, ssid->id);
6398 return -1;
6399 }
6400 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6401 ssid->ssid_len = params->ssid_len;
6402 ssid->p2p_group = 1;
6403 ssid->export_keys = 1;
6404 if (params->psk_set) {
6405 os_memcpy(ssid->psk, params->psk, 32);
6406 ssid->psk_set = 1;
6407 }
6408 if (params->passphrase)
6409 ssid->passphrase = os_strdup(params->passphrase);
6410
6411 wpa_s->show_group_started = 1;
6412 wpa_s->p2p_in_invitation = 1;
6413 wpa_s->p2p_invite_go_freq = freq;
6414 wpa_s->p2p_go_group_formation_completed = 0;
6415 wpa_s->global->p2p_group_formation = wpa_s;
6416
6417 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6418 NULL);
6419 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6420 wpas_p2p_group_formation_timeout,
6421 wpa_s->p2pdev, NULL);
6422 wpa_supplicant_select_network(wpa_s, ssid);
6423
6424 return 0;
6425 }
6426
6427
wpas_p2p_group_add_persistent(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,int addr_allocated,int force_freq,int neg_freq,int vht_center_freq2,int ht40,int vht,int max_oper_chwidth,int he,const struct p2p_channels * channels,int connection_timeout,int force_scan)6428 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6429 struct wpa_ssid *ssid, int addr_allocated,
6430 int force_freq, int neg_freq,
6431 int vht_center_freq2, int ht40,
6432 int vht, int max_oper_chwidth, int he,
6433 const struct p2p_channels *channels,
6434 int connection_timeout, int force_scan)
6435 {
6436 struct p2p_go_neg_results params;
6437 int go = 0, freq;
6438
6439 if (ssid->disabled != 2 || ssid->ssid == NULL)
6440 return -1;
6441
6442 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6443 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6444 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6445 "already running");
6446 if (go == 0 &&
6447 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6448 wpa_s->p2pdev, NULL)) {
6449 /*
6450 * This can happen if Invitation Response frame was lost
6451 * and the peer (GO of a persistent group) tries to
6452 * invite us again. Reschedule the timeout to avoid
6453 * terminating the wait for the connection too early
6454 * since we now know that the peer is still trying to
6455 * invite us instead of having already started the GO.
6456 */
6457 wpa_printf(MSG_DEBUG,
6458 "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6459 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6460 wpas_p2p_group_formation_timeout,
6461 wpa_s->p2pdev, NULL);
6462 }
6463 return 0;
6464 }
6465
6466 os_free(wpa_s->global->add_psk);
6467 wpa_s->global->add_psk = NULL;
6468
6469 /* Make sure we are not running find during connection establishment */
6470 wpas_p2p_stop_find_oper(wpa_s);
6471
6472 wpa_s->p2p_fallback_to_go_neg = 0;
6473
6474 if (ssid->mode == WPAS_MODE_P2P_GO) {
6475 if (force_freq > 0) {
6476 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6477 if (freq < 0)
6478 return -1;
6479 } else {
6480 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6481 if (freq < 0 ||
6482 (freq > 0 && !freq_included(wpa_s, channels, freq)))
6483 freq = 0;
6484 }
6485 } else if (ssid->mode == WPAS_MODE_INFRA) {
6486 freq = neg_freq;
6487 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6488 struct os_reltime now;
6489 struct wpa_bss *bss =
6490 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6491
6492 os_get_reltime(&now);
6493 if (bss &&
6494 !os_reltime_expired(&now, &bss->last_update, 5) &&
6495 freq_included(wpa_s, channels, bss->freq))
6496 freq = bss->freq;
6497 else
6498 freq = 0;
6499 }
6500
6501 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6502 force_scan);
6503 } else {
6504 return -1;
6505 }
6506
6507 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2,
6508 ht40, vht, max_oper_chwidth, he, channels))
6509 return -1;
6510
6511 params.role_go = 1;
6512 params.psk_set = ssid->psk_set;
6513 if (params.psk_set)
6514 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6515 if (ssid->passphrase) {
6516 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6517 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6518 "persistent group");
6519 return -1;
6520 }
6521 os_strlcpy(params.passphrase, ssid->passphrase,
6522 sizeof(params.passphrase));
6523 }
6524 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6525 params.ssid_len = ssid->ssid_len;
6526 params.persistent_group = 1;
6527
6528 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6529 if (wpa_s == NULL)
6530 return -1;
6531
6532 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6533
6534 wpa_s->p2p_first_connection_timeout = connection_timeout;
6535 wpas_start_wps_go(wpa_s, ¶ms, 0);
6536
6537 return 0;
6538 }
6539
6540
wpas_p2p_ie_update(void * ctx,struct wpabuf * beacon_ies,struct wpabuf * proberesp_ies)6541 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6542 struct wpabuf *proberesp_ies)
6543 {
6544 struct wpa_supplicant *wpa_s = ctx;
6545 if (wpa_s->ap_iface) {
6546 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6547 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6548 wpabuf_free(beacon_ies);
6549 wpabuf_free(proberesp_ies);
6550 return;
6551 }
6552 if (beacon_ies) {
6553 wpabuf_free(hapd->p2p_beacon_ie);
6554 hapd->p2p_beacon_ie = beacon_ies;
6555 }
6556 wpabuf_free(hapd->p2p_probe_resp_ie);
6557 hapd->p2p_probe_resp_ie = proberesp_ies;
6558 } else {
6559 wpabuf_free(beacon_ies);
6560 wpabuf_free(proberesp_ies);
6561 }
6562 wpa_supplicant_ap_update_beacon(wpa_s);
6563 }
6564
6565
wpas_p2p_idle_update(void * ctx,int idle)6566 static void wpas_p2p_idle_update(void *ctx, int idle)
6567 {
6568 struct wpa_supplicant *wpa_s = ctx;
6569 if (!wpa_s->ap_iface)
6570 return;
6571 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6572 if (idle) {
6573 if (wpa_s->global->p2p_fail_on_wps_complete &&
6574 wpa_s->p2p_in_provisioning) {
6575 wpas_p2p_grpform_fail_after_wps(wpa_s);
6576 return;
6577 }
6578 wpas_p2p_set_group_idle_timeout(wpa_s);
6579 } else
6580 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6581 }
6582
6583
wpas_p2p_group_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)6584 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6585 struct wpa_ssid *ssid)
6586 {
6587 struct p2p_group *group;
6588 struct p2p_group_config *cfg;
6589
6590 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6591 !ssid->p2p_group)
6592 return NULL;
6593
6594 cfg = os_zalloc(sizeof(*cfg));
6595 if (cfg == NULL)
6596 return NULL;
6597
6598 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6599 cfg->persistent_group = 2;
6600 else if (ssid->p2p_persistent_group)
6601 cfg->persistent_group = 1;
6602 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6603 if (wpa_s->max_stations &&
6604 wpa_s->max_stations < wpa_s->conf->max_num_sta)
6605 cfg->max_clients = wpa_s->max_stations;
6606 else
6607 cfg->max_clients = wpa_s->conf->max_num_sta;
6608 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6609 cfg->ssid_len = ssid->ssid_len;
6610 cfg->freq = ssid->frequency;
6611 cfg->cb_ctx = wpa_s;
6612 cfg->ie_update = wpas_p2p_ie_update;
6613 cfg->idle_update = wpas_p2p_idle_update;
6614 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6615 != 0;
6616
6617 group = p2p_group_init(wpa_s->global->p2p, cfg);
6618 if (group == NULL)
6619 os_free(cfg);
6620 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6621 p2p_group_notif_formation_done(group);
6622 wpa_s->p2p_group = group;
6623 return group;
6624 }
6625
6626
wpas_p2p_wps_success(struct wpa_supplicant * wpa_s,const u8 * peer_addr,int registrar)6627 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6628 int registrar)
6629 {
6630 struct wpa_ssid *ssid = wpa_s->current_ssid;
6631
6632 if (!wpa_s->p2p_in_provisioning) {
6633 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6634 "provisioning not in progress");
6635 return;
6636 }
6637
6638 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6639 u8 go_dev_addr[ETH_ALEN];
6640 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6641 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6642 ssid->ssid_len);
6643 /* Clear any stored provisioning info */
6644 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6645 }
6646
6647 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6648 NULL);
6649 wpa_s->p2p_go_group_formation_completed = 1;
6650 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6651 /*
6652 * Use a separate timeout for initial data connection to
6653 * complete to allow the group to be removed automatically if
6654 * something goes wrong in this step before the P2P group idle
6655 * timeout mechanism is taken into use.
6656 */
6657 wpa_dbg(wpa_s, MSG_DEBUG,
6658 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6659 P2P_MAX_INITIAL_CONN_WAIT);
6660 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6661 wpas_p2p_group_formation_timeout,
6662 wpa_s->p2pdev, NULL);
6663 /* Complete group formation on successful data connection. */
6664 wpa_s->p2p_go_group_formation_completed = 0;
6665 } else if (ssid) {
6666 /*
6667 * Use a separate timeout for initial data connection to
6668 * complete to allow the group to be removed automatically if
6669 * the client does not complete data connection successfully.
6670 */
6671 wpa_dbg(wpa_s, MSG_DEBUG,
6672 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6673 P2P_MAX_INITIAL_CONN_WAIT_GO);
6674 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6675 wpas_p2p_group_formation_timeout,
6676 wpa_s->p2pdev, NULL);
6677 /*
6678 * Complete group formation on first successful data connection
6679 */
6680 wpa_s->p2p_go_group_formation_completed = 0;
6681 }
6682 if (wpa_s->global->p2p)
6683 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6684 wpas_group_formation_completed(wpa_s, 1, 0);
6685 }
6686
6687
wpas_p2p_wps_failed(struct wpa_supplicant * wpa_s,struct wps_event_fail * fail)6688 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6689 struct wps_event_fail *fail)
6690 {
6691 if (!wpa_s->p2p_in_provisioning) {
6692 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6693 "provisioning not in progress");
6694 return;
6695 }
6696
6697 if (wpa_s->go_params) {
6698 p2p_clear_provisioning_info(
6699 wpa_s->global->p2p,
6700 wpa_s->go_params->peer_device_addr);
6701 }
6702
6703 wpas_notify_p2p_wps_failed(wpa_s, fail);
6704
6705 if (wpa_s == wpa_s->global->p2p_group_formation) {
6706 /*
6707 * Allow some time for the failed WPS negotiation exchange to
6708 * complete, but remove the group since group formation cannot
6709 * succeed after provisioning failure.
6710 */
6711 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6712 wpa_s->global->p2p_fail_on_wps_complete = 1;
6713 eloop_deplete_timeout(0, 50000,
6714 wpas_p2p_group_formation_timeout,
6715 wpa_s->p2pdev, NULL);
6716 }
6717 }
6718
6719
wpas_p2p_wps_eapol_cb(struct wpa_supplicant * wpa_s)6720 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6721 {
6722 if (!wpa_s->global->p2p_fail_on_wps_complete ||
6723 !wpa_s->p2p_in_provisioning)
6724 return 0;
6725
6726 wpas_p2p_grpform_fail_after_wps(wpa_s);
6727
6728 return 1;
6729 }
6730
6731
wpas_p2p_prov_disc(struct wpa_supplicant * wpa_s,const u8 * peer_addr,const char * config_method,enum wpas_p2p_prov_disc_use use,struct p2ps_provision * p2ps_prov)6732 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6733 const char *config_method,
6734 enum wpas_p2p_prov_disc_use use,
6735 struct p2ps_provision *p2ps_prov)
6736 {
6737 u16 config_methods;
6738
6739 wpa_s->global->pending_p2ps_group = 0;
6740 wpa_s->global->pending_p2ps_group_freq = 0;
6741 wpa_s->p2p_fallback_to_go_neg = 0;
6742 wpa_s->pending_pd_use = NORMAL_PD;
6743 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6744 p2ps_prov->conncap = p2ps_group_capability(
6745 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6746 &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6747
6748 wpa_printf(MSG_DEBUG,
6749 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6750 __func__, p2ps_prov->conncap,
6751 p2ps_prov->adv_id, p2ps_prov->conncap,
6752 p2ps_prov->status, p2ps_prov->info);
6753
6754 config_methods = 0;
6755 } else if (os_strncmp(config_method, "display", 7) == 0)
6756 config_methods = WPS_CONFIG_DISPLAY;
6757 else if (os_strncmp(config_method, "keypad", 6) == 0)
6758 config_methods = WPS_CONFIG_KEYPAD;
6759 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6760 os_strncmp(config_method, "pushbutton", 10) == 0)
6761 config_methods = WPS_CONFIG_PUSHBUTTON;
6762 else {
6763 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6764 os_free(p2ps_prov);
6765 return -1;
6766 }
6767
6768 if (use == WPAS_P2P_PD_AUTO) {
6769 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6770 wpa_s->pending_pd_config_methods = config_methods;
6771 wpa_s->p2p_auto_pd = 1;
6772 wpa_s->p2p_auto_join = 0;
6773 wpa_s->pending_pd_before_join = 0;
6774 wpa_s->auto_pd_scan_retry = 0;
6775 wpas_p2p_stop_find(wpa_s);
6776 wpa_s->p2p_join_scan_count = 0;
6777 os_get_reltime(&wpa_s->p2p_auto_started);
6778 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6779 wpa_s->p2p_auto_started.sec,
6780 wpa_s->p2p_auto_started.usec);
6781 wpas_p2p_join_scan(wpa_s, NULL);
6782 return 0;
6783 }
6784
6785 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6786 os_free(p2ps_prov);
6787 return -1;
6788 }
6789
6790 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6791 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6792 0, 1);
6793 }
6794
6795
wpas_p2p_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)6796 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6797 char *end)
6798 {
6799 return p2p_scan_result_text(ies, ies_len, buf, end);
6800 }
6801
6802
wpas_p2p_clear_pending_action_tx(struct wpa_supplicant * wpa_s)6803 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6804 {
6805 if (!offchannel_pending_action_tx(wpa_s))
6806 return;
6807
6808 if (wpa_s->p2p_send_action_work) {
6809 wpas_p2p_free_send_action_work(wpa_s);
6810 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6811 wpa_s, NULL);
6812 offchannel_send_action_done(wpa_s);
6813 }
6814
6815 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6816 "operation request");
6817 offchannel_clear_pending_action_tx(wpa_s);
6818 }
6819
6820
wpas_p2p_find(struct wpa_supplicant * wpa_s,unsigned int timeout,enum p2p_discovery_type type,unsigned int num_req_dev_types,const u8 * req_dev_types,const u8 * dev_id,unsigned int search_delay,u8 seek_cnt,const char ** seek_string,int freq)6821 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6822 enum p2p_discovery_type type,
6823 unsigned int num_req_dev_types, const u8 *req_dev_types,
6824 const u8 *dev_id, unsigned int search_delay,
6825 u8 seek_cnt, const char **seek_string, int freq)
6826 {
6827 wpas_p2p_clear_pending_action_tx(wpa_s);
6828 wpa_s->p2p_long_listen = 0;
6829
6830 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6831 wpa_s->p2p_in_provisioning) {
6832 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s",
6833 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ?
6834 " (P2P disabled)" : "",
6835 wpa_s->p2p_in_provisioning ?
6836 " (p2p_in_provisioning)" : "");
6837 return -1;
6838 }
6839
6840 wpa_supplicant_cancel_sched_scan(wpa_s);
6841
6842 return p2p_find(wpa_s->global->p2p, timeout, type,
6843 num_req_dev_types, req_dev_types, dev_id,
6844 search_delay, seek_cnt, seek_string, freq);
6845 }
6846
6847
wpas_p2p_scan_res_ignore_search(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)6848 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6849 struct wpa_scan_results *scan_res)
6850 {
6851 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6852
6853 if (wpa_s->p2p_scan_work) {
6854 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6855 wpa_s->p2p_scan_work = NULL;
6856 radio_work_done(work);
6857 }
6858
6859 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6860 return;
6861
6862 /*
6863 * Indicate that results have been processed so that the P2P module can
6864 * continue pending tasks.
6865 */
6866 p2p_scan_res_handled(wpa_s->global->p2p);
6867 }
6868
6869
wpas_p2p_stop_find_oper(struct wpa_supplicant * wpa_s)6870 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6871 {
6872 wpas_p2p_clear_pending_action_tx(wpa_s);
6873 wpa_s->p2p_long_listen = 0;
6874 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6875 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6876
6877 if (wpa_s->global->p2p)
6878 p2p_stop_find(wpa_s->global->p2p);
6879
6880 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6881 wpa_printf(MSG_DEBUG,
6882 "P2P: Do not consider the scan results after stop_find");
6883 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6884 }
6885 }
6886
6887
wpas_p2p_stop_find(struct wpa_supplicant * wpa_s)6888 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6889 {
6890 wpas_p2p_stop_find_oper(wpa_s);
6891 if (!wpa_s->global->pending_group_iface_for_p2ps)
6892 wpas_p2p_remove_pending_group_interface(wpa_s);
6893 }
6894
6895
wpas_p2p_long_listen_timeout(void * eloop_ctx,void * timeout_ctx)6896 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6897 {
6898 struct wpa_supplicant *wpa_s = eloop_ctx;
6899 wpa_s->p2p_long_listen = 0;
6900 }
6901
6902
wpas_p2p_listen(struct wpa_supplicant * wpa_s,unsigned int timeout)6903 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6904 {
6905 int res;
6906
6907 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6908 return -1;
6909
6910 if (wpa_s->p2p_lo_started) {
6911 wpa_printf(MSG_DEBUG,
6912 "P2P: Cannot start P2P listen, it is offloaded");
6913 return -1;
6914 }
6915
6916 wpa_supplicant_cancel_sched_scan(wpa_s);
6917 wpas_p2p_clear_pending_action_tx(wpa_s);
6918
6919 if (timeout == 0) {
6920 /*
6921 * This is a request for unlimited Listen state. However, at
6922 * least for now, this is mapped to a Listen state for one
6923 * hour.
6924 */
6925 timeout = 3600;
6926 }
6927 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6928 wpa_s->p2p_long_listen = 0;
6929
6930 /*
6931 * Stop previous find/listen operation to avoid trying to request a new
6932 * remain-on-channel operation while the driver is still running the
6933 * previous one.
6934 */
6935 if (wpa_s->global->p2p)
6936 p2p_stop_find(wpa_s->global->p2p);
6937
6938 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6939 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6940 wpa_s->p2p_long_listen = timeout * 1000;
6941 eloop_register_timeout(timeout, 0,
6942 wpas_p2p_long_listen_timeout,
6943 wpa_s, NULL);
6944 }
6945
6946 return res;
6947 }
6948
6949
wpas_p2p_assoc_req_ie(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,u8 * buf,size_t len,int p2p_group)6950 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6951 u8 *buf, size_t len, int p2p_group)
6952 {
6953 struct wpabuf *p2p_ie;
6954 int ret;
6955
6956 if (wpa_s->global->p2p_disabled)
6957 return -1;
6958 /*
6959 * Advertize mandatory cross connection capability even on
6960 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6961 */
6962 if (wpa_s->conf->p2p_disabled && p2p_group)
6963 return -1;
6964 if (wpa_s->global->p2p == NULL)
6965 return -1;
6966 if (bss == NULL)
6967 return -1;
6968
6969 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6970 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6971 p2p_group, p2p_ie);
6972 wpabuf_free(p2p_ie);
6973
6974 return ret;
6975 }
6976
6977
wpas_p2p_probe_req_rx(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * dst,const u8 * bssid,const u8 * ie,size_t ie_len,unsigned int rx_freq,int ssi_signal)6978 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6979 const u8 *dst, const u8 *bssid,
6980 const u8 *ie, size_t ie_len,
6981 unsigned int rx_freq, int ssi_signal)
6982 {
6983 if (wpa_s->global->p2p_disabled)
6984 return 0;
6985 if (wpa_s->global->p2p == NULL)
6986 return 0;
6987
6988 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6989 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6990 case P2P_PREQ_NOT_P2P:
6991 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6992 ssi_signal);
6993 /* fall through */
6994 case P2P_PREQ_MALFORMED:
6995 case P2P_PREQ_NOT_LISTEN:
6996 case P2P_PREQ_NOT_PROCESSED:
6997 default: /* make gcc happy */
6998 return 0;
6999 case P2P_PREQ_PROCESSED:
7000 return 1;
7001 }
7002 }
7003
7004
wpas_p2p_rx_action(struct wpa_supplicant * wpa_s,const u8 * da,const u8 * sa,const u8 * bssid,u8 category,const u8 * data,size_t len,int freq)7005 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
7006 const u8 *sa, const u8 *bssid,
7007 u8 category, const u8 *data, size_t len, int freq)
7008 {
7009 if (wpa_s->global->p2p_disabled)
7010 return;
7011 if (wpa_s->global->p2p == NULL)
7012 return;
7013
7014 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
7015 freq);
7016 }
7017
7018
wpas_p2p_scan_ie(struct wpa_supplicant * wpa_s,struct wpabuf * ies)7019 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
7020 {
7021 unsigned int bands;
7022
7023 if (wpa_s->global->p2p_disabled)
7024 return;
7025 if (wpa_s->global->p2p == NULL)
7026 return;
7027
7028 bands = wpas_get_bands(wpa_s, NULL);
7029 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
7030 }
7031
7032
wpas_p2p_group_deinit(struct wpa_supplicant * wpa_s)7033 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
7034 {
7035 p2p_group_deinit(wpa_s->p2p_group);
7036 wpa_s->p2p_group = NULL;
7037
7038 wpa_s->ap_configured_cb = NULL;
7039 wpa_s->ap_configured_cb_ctx = NULL;
7040 wpa_s->ap_configured_cb_data = NULL;
7041 wpa_s->connect_without_scan = NULL;
7042 }
7043
7044
wpas_p2p_reject(struct wpa_supplicant * wpa_s,const u8 * addr)7045 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
7046 {
7047 wpa_s->p2p_long_listen = 0;
7048
7049 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7050 return -1;
7051
7052 return p2p_reject(wpa_s->global->p2p, addr);
7053 }
7054
7055
7056 /* Invite to reinvoke a persistent group */
wpas_p2p_invite(struct wpa_supplicant * wpa_s,const u8 * peer_addr,struct wpa_ssid * ssid,const u8 * go_dev_addr,int freq,int vht_center_freq2,int ht40,int vht,int max_chwidth,int pref_freq,int he)7057 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
7058 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
7059 int vht_center_freq2, int ht40, int vht, int max_chwidth,
7060 int pref_freq, int he)
7061 {
7062 enum p2p_invite_role role;
7063 u8 *bssid = NULL;
7064 int force_freq = 0;
7065 int res;
7066 int no_pref_freq_given = pref_freq == 0;
7067 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7068
7069 wpa_s->global->p2p_invite_group = NULL;
7070 if (peer_addr)
7071 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
7072 else
7073 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
7074
7075 wpa_s->p2p_persistent_go_freq = freq;
7076 wpa_s->p2p_go_ht40 = !!ht40;
7077 wpa_s->p2p_go_vht = !!vht;
7078 wpa_s->p2p_go_he = !!he;
7079 wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
7080 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
7081 if (ssid->mode == WPAS_MODE_P2P_GO) {
7082 role = P2P_INVITE_ROLE_GO;
7083 if (peer_addr == NULL) {
7084 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
7085 "address in invitation command");
7086 return -1;
7087 }
7088 if (wpas_p2p_create_iface(wpa_s)) {
7089 if (wpas_p2p_add_group_interface(wpa_s,
7090 WPA_IF_P2P_GO) < 0) {
7091 wpa_printf(MSG_ERROR, "P2P: Failed to "
7092 "allocate a new interface for the "
7093 "group");
7094 return -1;
7095 }
7096 bssid = wpa_s->pending_interface_addr;
7097 } else if (wpa_s->p2p_mgmt)
7098 bssid = wpa_s->parent->own_addr;
7099 else
7100 bssid = wpa_s->own_addr;
7101 } else {
7102 role = P2P_INVITE_ROLE_CLIENT;
7103 peer_addr = ssid->bssid;
7104 }
7105 wpa_s->pending_invite_ssid_id = ssid->id;
7106
7107 size = P2P_MAX_PREF_CHANNELS;
7108 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7109 role == P2P_INVITE_ROLE_GO,
7110 pref_freq_list, &size);
7111 if (res)
7112 return res;
7113
7114 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7115 return -1;
7116
7117 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
7118
7119 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
7120 no_pref_freq_given && pref_freq > 0 &&
7121 wpa_s->num_multichan_concurrent > 1 &&
7122 wpas_p2p_num_unused_channels(wpa_s) > 0) {
7123 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
7124 pref_freq);
7125 pref_freq = 0;
7126 }
7127
7128 /*
7129 * Stop any find/listen operations before invitation and possibly
7130 * connection establishment.
7131 */
7132 wpas_p2p_stop_find_oper(wpa_s);
7133
7134 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7135 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
7136 1, pref_freq, -1);
7137 }
7138
7139
7140 /* Invite to join an active group */
wpas_p2p_invite_group(struct wpa_supplicant * wpa_s,const char * ifname,const u8 * peer_addr,const u8 * go_dev_addr)7141 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
7142 const u8 *peer_addr, const u8 *go_dev_addr)
7143 {
7144 struct wpa_global *global = wpa_s->global;
7145 enum p2p_invite_role role;
7146 u8 *bssid = NULL;
7147 struct wpa_ssid *ssid;
7148 int persistent;
7149 int freq = 0, force_freq = 0, pref_freq = 0;
7150 int res;
7151 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7152
7153 wpa_s->p2p_persistent_go_freq = 0;
7154 wpa_s->p2p_go_ht40 = 0;
7155 wpa_s->p2p_go_vht = 0;
7156 wpa_s->p2p_go_vht_center_freq2 = 0;
7157 wpa_s->p2p_go_max_oper_chwidth = 0;
7158
7159 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7160 if (os_strcmp(wpa_s->ifname, ifname) == 0)
7161 break;
7162 }
7163 if (wpa_s == NULL) {
7164 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
7165 return -1;
7166 }
7167
7168 ssid = wpa_s->current_ssid;
7169 if (ssid == NULL) {
7170 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
7171 "invitation");
7172 return -1;
7173 }
7174
7175 wpa_s->global->p2p_invite_group = wpa_s;
7176 persistent = ssid->p2p_persistent_group &&
7177 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
7178 ssid->ssid, ssid->ssid_len);
7179
7180 if (ssid->mode == WPAS_MODE_P2P_GO) {
7181 role = P2P_INVITE_ROLE_ACTIVE_GO;
7182 bssid = wpa_s->own_addr;
7183 if (go_dev_addr == NULL)
7184 go_dev_addr = wpa_s->global->p2p_dev_addr;
7185 freq = ssid->frequency;
7186 } else {
7187 role = P2P_INVITE_ROLE_CLIENT;
7188 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
7189 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
7190 "invite to current group");
7191 return -1;
7192 }
7193 bssid = wpa_s->bssid;
7194 if (go_dev_addr == NULL &&
7195 !is_zero_ether_addr(wpa_s->go_dev_addr))
7196 go_dev_addr = wpa_s->go_dev_addr;
7197 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7198 (int) wpa_s->assoc_freq;
7199 }
7200 wpa_s->p2pdev->pending_invite_ssid_id = -1;
7201
7202 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7203 return -1;
7204
7205 size = P2P_MAX_PREF_CHANNELS;
7206 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7207 role == P2P_INVITE_ROLE_ACTIVE_GO,
7208 pref_freq_list, &size);
7209 if (res)
7210 return res;
7211 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
7212
7213 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7214 ssid->ssid, ssid->ssid_len, force_freq,
7215 go_dev_addr, persistent, pref_freq, -1);
7216 }
7217
7218
wpas_p2p_completed(struct wpa_supplicant * wpa_s)7219 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
7220 {
7221 struct wpa_ssid *ssid = wpa_s->current_ssid;
7222 u8 go_dev_addr[ETH_ALEN];
7223 int persistent;
7224 int freq;
7225 u8 ip[3 * 4], *ip_ptr = NULL;
7226 char ip_addr[100];
7227
7228 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
7229 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7230 wpa_s->p2pdev, NULL);
7231 }
7232
7233 if (!wpa_s->show_group_started || !ssid)
7234 return;
7235
7236 wpa_s->show_group_started = 0;
7237 if (!wpa_s->p2p_go_group_formation_completed &&
7238 wpa_s->global->p2p_group_formation == wpa_s) {
7239 wpa_dbg(wpa_s, MSG_DEBUG,
7240 "P2P: Marking group formation completed on client on data connection");
7241 wpa_s->p2p_go_group_formation_completed = 1;
7242 wpa_s->global->p2p_group_formation = NULL;
7243 wpa_s->p2p_in_provisioning = 0;
7244 wpa_s->p2p_in_invitation = 0;
7245 }
7246
7247 os_memset(go_dev_addr, 0, ETH_ALEN);
7248 if (ssid->bssid_set)
7249 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7250 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7251 ssid->ssid_len);
7252 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7253
7254 if (wpa_s->global->p2p_group_formation == wpa_s)
7255 wpa_s->global->p2p_group_formation = NULL;
7256
7257 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7258 (int) wpa_s->assoc_freq;
7259
7260 ip_addr[0] = '\0';
7261 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7262 int res;
7263
7264 res = os_snprintf(ip_addr, sizeof(ip_addr),
7265 " ip_addr=%u.%u.%u.%u "
7266 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7267 ip[0], ip[1], ip[2], ip[3],
7268 ip[4], ip[5], ip[6], ip[7],
7269 ip[8], ip[9], ip[10], ip[11]);
7270 if (os_snprintf_error(sizeof(ip_addr), res))
7271 ip_addr[0] = '\0';
7272 ip_ptr = ip;
7273 }
7274
7275 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7276 ssid->passphrase == NULL && ssid->psk_set ?
7277 ssid->psk : NULL,
7278 ssid->passphrase, go_dev_addr, persistent,
7279 ip_addr);
7280
7281 if (persistent)
7282 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7283 ssid, go_dev_addr);
7284
7285 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip_ptr);
7286 }
7287
7288
wpas_p2p_presence_req(struct wpa_supplicant * wpa_s,u32 duration1,u32 interval1,u32 duration2,u32 interval2)7289 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7290 u32 interval1, u32 duration2, u32 interval2)
7291 {
7292 int ret;
7293
7294 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7295 return -1;
7296
7297 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7298 wpa_s->current_ssid == NULL ||
7299 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7300 return -1;
7301
7302 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7303 wpa_s->own_addr, wpa_s->assoc_freq,
7304 duration1, interval1, duration2, interval2);
7305 if (ret == 0)
7306 wpa_s->waiting_presence_resp = 1;
7307
7308 return ret;
7309 }
7310
7311
wpas_p2p_ext_listen(struct wpa_supplicant * wpa_s,unsigned int period,unsigned int interval)7312 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7313 unsigned int interval)
7314 {
7315 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7316 return -1;
7317
7318 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7319 }
7320
7321
wpas_p2p_is_client(struct wpa_supplicant * wpa_s)7322 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7323 {
7324 if (wpa_s->current_ssid == NULL) {
7325 /*
7326 * current_ssid can be cleared when P2P client interface gets
7327 * disconnected, so assume this interface was used as P2P
7328 * client.
7329 */
7330 return 1;
7331 }
7332 return wpa_s->current_ssid->p2p_group &&
7333 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7334 }
7335
7336
wpas_p2p_group_idle_timeout(void * eloop_ctx,void * timeout_ctx)7337 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7338 {
7339 struct wpa_supplicant *wpa_s = eloop_ctx;
7340
7341 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7342 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7343 "disabled");
7344 return;
7345 }
7346
7347 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7348 "group");
7349 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7350 }
7351
7352
wpas_p2p_set_group_idle_timeout(struct wpa_supplicant * wpa_s)7353 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7354 {
7355 int timeout;
7356
7357 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7358 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7359
7360 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7361 return;
7362
7363 timeout = wpa_s->conf->p2p_group_idle;
7364 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7365 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7366 timeout = P2P_MAX_CLIENT_IDLE;
7367
7368 if (timeout == 0)
7369 return;
7370
7371 if (timeout < 0) {
7372 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7373 timeout = 0; /* special client mode no-timeout */
7374 else
7375 return;
7376 }
7377
7378 if (wpa_s->p2p_in_provisioning) {
7379 /*
7380 * Use the normal group formation timeout during the
7381 * provisioning phase to avoid terminating this process too
7382 * early due to group idle timeout.
7383 */
7384 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7385 "during provisioning");
7386 return;
7387 }
7388
7389 if (wpa_s->show_group_started) {
7390 /*
7391 * Use the normal group formation timeout between the end of
7392 * the provisioning phase and completion of 4-way handshake to
7393 * avoid terminating this process too early due to group idle
7394 * timeout.
7395 */
7396 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7397 "while waiting for initial 4-way handshake to "
7398 "complete");
7399 return;
7400 }
7401
7402 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7403 timeout);
7404 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7405 wpa_s, NULL);
7406 }
7407
7408
7409 /* Returns 1 if the interface was removed */
wpas_p2p_deauth_notif(struct wpa_supplicant * wpa_s,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len,int locally_generated)7410 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7411 u16 reason_code, const u8 *ie, size_t ie_len,
7412 int locally_generated)
7413 {
7414 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7415 return 0;
7416
7417 if (!locally_generated)
7418 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7419 ie_len);
7420
7421 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7422 wpa_s->current_ssid &&
7423 wpa_s->current_ssid->p2p_group &&
7424 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7425 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7426 "session is ending");
7427 if (wpas_p2p_group_delete(wpa_s,
7428 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7429 > 0)
7430 return 1;
7431 }
7432
7433 return 0;
7434 }
7435
7436
wpas_p2p_disassoc_notif(struct wpa_supplicant * wpa_s,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len,int locally_generated)7437 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7438 u16 reason_code, const u8 *ie, size_t ie_len,
7439 int locally_generated)
7440 {
7441 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7442 return;
7443
7444 if (!locally_generated)
7445 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7446 ie_len);
7447 }
7448
7449
wpas_p2p_update_config(struct wpa_supplicant * wpa_s)7450 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7451 {
7452 struct p2p_data *p2p = wpa_s->global->p2p;
7453
7454 if (p2p == NULL)
7455 return;
7456
7457 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7458 return;
7459
7460 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7461 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7462
7463 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7464 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7465
7466 if (wpa_s->wps &&
7467 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7468 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7469
7470 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7471 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7472
7473 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7474 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7475 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7476 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7477 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7478 }
7479
7480 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7481 p2p_set_sec_dev_types(p2p,
7482 (void *) wpa_s->conf->sec_device_type,
7483 wpa_s->conf->num_sec_device_types);
7484
7485 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7486 int i;
7487 p2p_remove_wps_vendor_extensions(p2p);
7488 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7489 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7490 continue;
7491 p2p_add_wps_vendor_extension(
7492 p2p, wpa_s->conf->wps_vendor_ext[i]);
7493 }
7494 }
7495
7496 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7497 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7498 char country[3];
7499 country[0] = wpa_s->conf->country[0];
7500 country[1] = wpa_s->conf->country[1];
7501 country[2] = 0x04;
7502 p2p_set_country(p2p, country);
7503 }
7504
7505 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7506 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7507 wpa_s->conf->p2p_ssid_postfix ?
7508 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7509 0);
7510 }
7511
7512 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7513 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7514
7515 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7516 u8 reg_class, channel;
7517 int ret;
7518 unsigned int r;
7519 u8 channel_forced;
7520
7521 if (wpa_s->conf->p2p_listen_reg_class &&
7522 wpa_s->conf->p2p_listen_channel) {
7523 reg_class = wpa_s->conf->p2p_listen_reg_class;
7524 channel = wpa_s->conf->p2p_listen_channel;
7525 channel_forced = 1;
7526 } else {
7527 reg_class = 81;
7528 /*
7529 * Pick one of the social channels randomly as the
7530 * listen channel.
7531 */
7532 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7533 channel = 1;
7534 else
7535 channel = 1 + (r % 3) * 5;
7536 channel_forced = 0;
7537 }
7538 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7539 channel_forced);
7540 if (ret)
7541 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7542 "failed: %d", ret);
7543 }
7544 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7545 u8 op_reg_class, op_channel, cfg_op_channel;
7546 int ret = 0;
7547 unsigned int r;
7548 if (wpa_s->conf->p2p_oper_reg_class &&
7549 wpa_s->conf->p2p_oper_channel) {
7550 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7551 op_channel = wpa_s->conf->p2p_oper_channel;
7552 cfg_op_channel = 1;
7553 } else {
7554 op_reg_class = 81;
7555 /*
7556 * Use random operation channel from (1, 6, 11)
7557 *if no other preference is indicated.
7558 */
7559 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7560 op_channel = 1;
7561 else
7562 op_channel = 1 + (r % 3) * 5;
7563 cfg_op_channel = 0;
7564 }
7565 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7566 cfg_op_channel);
7567 if (ret)
7568 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7569 "failed: %d", ret);
7570 }
7571
7572 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7573 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7574 wpa_s->conf->p2p_pref_chan) < 0) {
7575 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7576 "update failed");
7577 }
7578
7579 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7580 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7581 "update failed");
7582 }
7583 }
7584
7585 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7586 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7587 }
7588
7589
wpas_p2p_set_noa(struct wpa_supplicant * wpa_s,u8 count,int start,int duration)7590 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7591 int duration)
7592 {
7593 if (!wpa_s->ap_iface)
7594 return -1;
7595 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7596 duration);
7597 }
7598
7599
wpas_p2p_set_cross_connect(struct wpa_supplicant * wpa_s,int enabled)7600 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7601 {
7602 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7603 return -1;
7604
7605 wpa_s->global->cross_connection = enabled;
7606 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7607
7608 if (!enabled) {
7609 struct wpa_supplicant *iface;
7610
7611 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7612 {
7613 if (iface->cross_connect_enabled == 0)
7614 continue;
7615
7616 iface->cross_connect_enabled = 0;
7617 iface->cross_connect_in_use = 0;
7618 wpa_msg_global(iface->p2pdev, MSG_INFO,
7619 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7620 iface->ifname,
7621 iface->cross_connect_uplink);
7622 }
7623 }
7624
7625 return 0;
7626 }
7627
7628
wpas_p2p_enable_cross_connect(struct wpa_supplicant * uplink)7629 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7630 {
7631 struct wpa_supplicant *iface;
7632
7633 if (!uplink->global->cross_connection)
7634 return;
7635
7636 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7637 if (!iface->cross_connect_enabled)
7638 continue;
7639 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7640 0)
7641 continue;
7642 if (iface->ap_iface == NULL)
7643 continue;
7644 if (iface->cross_connect_in_use)
7645 continue;
7646
7647 iface->cross_connect_in_use = 1;
7648 wpa_msg_global(iface->p2pdev, MSG_INFO,
7649 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7650 iface->ifname, iface->cross_connect_uplink);
7651 }
7652 }
7653
7654
wpas_p2p_disable_cross_connect(struct wpa_supplicant * uplink)7655 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7656 {
7657 struct wpa_supplicant *iface;
7658
7659 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7660 if (!iface->cross_connect_enabled)
7661 continue;
7662 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7663 0)
7664 continue;
7665 if (!iface->cross_connect_in_use)
7666 continue;
7667
7668 wpa_msg_global(iface->p2pdev, MSG_INFO,
7669 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7670 iface->ifname, iface->cross_connect_uplink);
7671 iface->cross_connect_in_use = 0;
7672 }
7673 }
7674
7675
wpas_p2p_notif_connected(struct wpa_supplicant * wpa_s)7676 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7677 {
7678 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7679 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7680 wpa_s->cross_connect_disallowed)
7681 wpas_p2p_disable_cross_connect(wpa_s);
7682 else
7683 wpas_p2p_enable_cross_connect(wpa_s);
7684 if (!wpa_s->ap_iface &&
7685 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7686 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7687 }
7688
7689
wpas_p2p_notif_disconnected(struct wpa_supplicant * wpa_s)7690 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7691 {
7692 wpas_p2p_disable_cross_connect(wpa_s);
7693 if (!wpa_s->ap_iface &&
7694 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7695 wpa_s, NULL))
7696 wpas_p2p_set_group_idle_timeout(wpa_s);
7697 }
7698
7699
wpas_p2p_cross_connect_setup(struct wpa_supplicant * wpa_s)7700 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7701 {
7702 struct wpa_supplicant *iface;
7703
7704 if (!wpa_s->global->cross_connection)
7705 return;
7706
7707 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7708 if (iface == wpa_s)
7709 continue;
7710 if (iface->drv_flags &
7711 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7712 continue;
7713 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7714 iface != wpa_s->parent)
7715 continue;
7716
7717 wpa_s->cross_connect_enabled = 1;
7718 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7719 sizeof(wpa_s->cross_connect_uplink));
7720 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7721 "%s to %s whenever uplink is available",
7722 wpa_s->ifname, wpa_s->cross_connect_uplink);
7723
7724 if (iface->ap_iface || iface->current_ssid == NULL ||
7725 iface->current_ssid->mode != WPAS_MODE_INFRA ||
7726 iface->cross_connect_disallowed ||
7727 iface->wpa_state != WPA_COMPLETED)
7728 break;
7729
7730 wpa_s->cross_connect_in_use = 1;
7731 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7732 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7733 wpa_s->ifname, wpa_s->cross_connect_uplink);
7734 break;
7735 }
7736 }
7737
7738
wpas_p2p_notif_pbc_overlap(struct wpa_supplicant * wpa_s)7739 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7740 {
7741 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7742 !wpa_s->p2p_in_provisioning)
7743 return 0; /* not P2P client operation */
7744
7745 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7746 "session overlap");
7747 if (wpa_s != wpa_s->p2pdev)
7748 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7749 wpas_p2p_group_formation_failed(wpa_s, 0);
7750 return 1;
7751 }
7752
7753
wpas_p2p_pbc_overlap_cb(void * eloop_ctx,void * timeout_ctx)7754 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7755 {
7756 struct wpa_supplicant *wpa_s = eloop_ctx;
7757 wpas_p2p_notif_pbc_overlap(wpa_s);
7758 }
7759
7760
wpas_p2p_update_channel_list(struct wpa_supplicant * wpa_s,enum wpas_p2p_channel_update_trig trig)7761 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7762 enum wpas_p2p_channel_update_trig trig)
7763 {
7764 struct p2p_channels chan, cli_chan;
7765 struct wpa_used_freq_data *freqs = NULL;
7766 unsigned int num = wpa_s->num_multichan_concurrent;
7767
7768 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7769 return;
7770
7771 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7772 if (!freqs)
7773 return;
7774
7775 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7776
7777 os_memset(&chan, 0, sizeof(chan));
7778 os_memset(&cli_chan, 0, sizeof(cli_chan));
7779 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7780 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7781 "channel list");
7782 return;
7783 }
7784
7785 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7786
7787 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7788
7789 /*
7790 * The used frequencies map changed, so it is possible that a GO is
7791 * using a channel that is no longer valid for P2P use. It is also
7792 * possible that due to policy consideration, it would be preferable to
7793 * move it to a frequency already used by other station interfaces.
7794 */
7795 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7796
7797 os_free(freqs);
7798 }
7799
7800
wpas_p2p_scan_res_ignore(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)7801 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7802 struct wpa_scan_results *scan_res)
7803 {
7804 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7805 }
7806
7807
wpas_p2p_cancel(struct wpa_supplicant * wpa_s)7808 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7809 {
7810 struct wpa_global *global = wpa_s->global;
7811 int found = 0;
7812 const u8 *peer;
7813
7814 if (global->p2p == NULL)
7815 return -1;
7816
7817 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7818
7819 if (wpa_s->pending_interface_name[0] &&
7820 !is_zero_ether_addr(wpa_s->pending_interface_addr))
7821 found = 1;
7822
7823 peer = p2p_get_go_neg_peer(global->p2p);
7824 if (peer) {
7825 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7826 MACSTR, MAC2STR(peer));
7827 p2p_unauthorize(global->p2p, peer);
7828 found = 1;
7829 }
7830
7831 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7832 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7833 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7834 found = 1;
7835 }
7836
7837 if (wpa_s->pending_pd_before_join) {
7838 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7839 wpa_s->pending_pd_before_join = 0;
7840 found = 1;
7841 }
7842
7843 wpas_p2p_stop_find(wpa_s);
7844
7845 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7846 if (wpa_s == global->p2p_group_formation &&
7847 (wpa_s->p2p_in_provisioning ||
7848 wpa_s->parent->pending_interface_type ==
7849 WPA_IF_P2P_CLIENT)) {
7850 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7851 "formation found - cancelling",
7852 wpa_s->ifname);
7853 found = 1;
7854 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7855 wpa_s->p2pdev, NULL);
7856 if (wpa_s->p2p_in_provisioning) {
7857 wpas_group_formation_completed(wpa_s, 0, 0);
7858 break;
7859 }
7860 wpas_p2p_group_delete(wpa_s,
7861 P2P_GROUP_REMOVAL_REQUESTED);
7862 break;
7863 } else if (wpa_s->p2p_in_invitation) {
7864 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7865 wpa_s->ifname);
7866 found = 1;
7867 wpas_p2p_group_formation_failed(wpa_s, 0);
7868 break;
7869 }
7870 }
7871
7872 if (!found) {
7873 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7874 return -1;
7875 }
7876
7877 return 0;
7878 }
7879
7880
wpas_p2p_interface_unavailable(struct wpa_supplicant * wpa_s)7881 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7882 {
7883 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7884 return;
7885
7886 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7887 "being available anymore");
7888 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7889 }
7890
7891
wpas_p2p_update_best_channels(struct wpa_supplicant * wpa_s,int freq_24,int freq_5,int freq_overall)7892 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7893 int freq_24, int freq_5, int freq_overall)
7894 {
7895 struct p2p_data *p2p = wpa_s->global->p2p;
7896 if (p2p == NULL)
7897 return;
7898 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7899 }
7900
7901
wpas_p2p_unauthorize(struct wpa_supplicant * wpa_s,const char * addr)7902 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7903 {
7904 u8 peer[ETH_ALEN];
7905 struct p2p_data *p2p = wpa_s->global->p2p;
7906
7907 if (p2p == NULL)
7908 return -1;
7909
7910 if (hwaddr_aton(addr, peer))
7911 return -1;
7912
7913 return p2p_unauthorize(p2p, peer);
7914 }
7915
7916
7917 /**
7918 * wpas_p2p_disconnect - Disconnect from a P2P Group
7919 * @wpa_s: Pointer to wpa_supplicant data
7920 * Returns: 0 on success, -1 on failure
7921 *
7922 * This can be used to disconnect from a group in which the local end is a P2P
7923 * Client or to end a P2P Group in case the local end is the Group Owner. If a
7924 * virtual network interface was created for this group, that interface will be
7925 * removed. Otherwise, only the configured P2P group network will be removed
7926 * from the interface.
7927 */
wpas_p2p_disconnect(struct wpa_supplicant * wpa_s)7928 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7929 {
7930
7931 if (wpa_s == NULL)
7932 return -1;
7933
7934 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7935 -1 : 0;
7936 }
7937
7938
wpas_p2p_in_progress(struct wpa_supplicant * wpa_s)7939 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7940 {
7941 int ret;
7942
7943 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7944 return 0;
7945
7946 ret = p2p_in_progress(wpa_s->global->p2p);
7947 if (ret == 0) {
7948 /*
7949 * Check whether there is an ongoing WPS provisioning step (or
7950 * other parts of group formation) on another interface since
7951 * p2p_in_progress() does not report this to avoid issues for
7952 * scans during such provisioning step.
7953 */
7954 if (wpa_s->global->p2p_group_formation &&
7955 wpa_s->global->p2p_group_formation != wpa_s) {
7956 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7957 "in group formation",
7958 wpa_s->global->p2p_group_formation->ifname);
7959 ret = 1;
7960 }
7961 }
7962
7963 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7964 struct os_reltime now;
7965 os_get_reltime(&now);
7966 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7967 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7968 /* Wait for the first client has expired */
7969 wpa_s->global->p2p_go_wait_client.sec = 0;
7970 } else {
7971 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7972 ret = 1;
7973 }
7974 }
7975
7976 return ret;
7977 }
7978
7979
wpas_p2p_network_removed(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)7980 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7981 struct wpa_ssid *ssid)
7982 {
7983 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7984 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7985 wpa_s->p2pdev, NULL) > 0) {
7986 /**
7987 * Remove the network by scheduling the group formation
7988 * timeout to happen immediately. The teardown code
7989 * needs to be scheduled to run asynch later so that we
7990 * don't delete data from under ourselves unexpectedly.
7991 * Calling wpas_p2p_group_formation_timeout directly
7992 * causes a series of crashes in WPS failure scenarios.
7993 */
7994 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7995 "P2P group network getting removed");
7996 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7997 wpa_s->p2pdev, NULL);
7998 }
7999 }
8000
8001
wpas_p2p_get_persistent(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * ssid,size_t ssid_len)8002 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
8003 const u8 *addr, const u8 *ssid,
8004 size_t ssid_len)
8005 {
8006 struct wpa_ssid *s;
8007 size_t i;
8008
8009 for (s = wpa_s->conf->ssid; s; s = s->next) {
8010 if (s->disabled != 2)
8011 continue;
8012 if (ssid &&
8013 (ssid_len != s->ssid_len ||
8014 os_memcmp(ssid, s->ssid, ssid_len) != 0))
8015 continue;
8016 if (addr == NULL) {
8017 if (s->mode == WPAS_MODE_P2P_GO)
8018 return s;
8019 continue;
8020 }
8021 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
8022 return s; /* peer is GO in the persistent group */
8023 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
8024 continue;
8025 for (i = 0; i < s->num_p2p_clients; i++) {
8026 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
8027 addr, ETH_ALEN) == 0)
8028 return s; /* peer is P2P client in persistent
8029 * group */
8030 }
8031 }
8032
8033 return NULL;
8034 }
8035
8036
wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant * wpa_s,const u8 * addr)8037 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
8038 const u8 *addr)
8039 {
8040 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8041 wpa_s->p2pdev, NULL) > 0) {
8042 /*
8043 * This can happen if WPS provisioning step is not terminated
8044 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
8045 * peer was able to connect, there is no need to time out group
8046 * formation after this, though. In addition, this is used with
8047 * the initial connection wait on the GO as a separate formation
8048 * timeout and as such, expected to be hit after the initial WPS
8049 * provisioning step.
8050 */
8051 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
8052
8053 if (!wpa_s->p2p_go_group_formation_completed &&
8054 !wpa_s->group_formation_reported) {
8055 /*
8056 * GO has not yet notified group formation success since
8057 * the WPS step was not completed cleanly. Do that
8058 * notification now since the P2P Client was able to
8059 * connect and as such, must have received the
8060 * credential from the WPS step.
8061 */
8062 if (wpa_s->global->p2p)
8063 p2p_wps_success_cb(wpa_s->global->p2p, addr);
8064 wpas_group_formation_completed(wpa_s, 1, 0);
8065 }
8066 }
8067 if (!wpa_s->p2p_go_group_formation_completed) {
8068 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
8069 wpa_s->p2p_go_group_formation_completed = 1;
8070 wpa_s->global->p2p_group_formation = NULL;
8071 wpa_s->p2p_in_provisioning = 0;
8072 wpa_s->p2p_in_invitation = 0;
8073 }
8074 wpa_s->global->p2p_go_wait_client.sec = 0;
8075 if (addr == NULL)
8076 return;
8077 wpas_p2p_add_persistent_group_client(wpa_s, addr);
8078 }
8079
8080
wpas_p2p_fallback_to_go_neg(struct wpa_supplicant * wpa_s,int group_added)8081 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
8082 int group_added)
8083 {
8084 struct wpa_supplicant *group = wpa_s;
8085 int ret = 0;
8086
8087 if (wpa_s->global->p2p_group_formation)
8088 group = wpa_s->global->p2p_group_formation;
8089 wpa_s = wpa_s->global->p2p_init_wpa_s;
8090 offchannel_send_action_done(wpa_s);
8091 if (group_added)
8092 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
8093 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
8094 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
8095 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
8096 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
8097 wpa_s->p2p_go_vht_center_freq2,
8098 wpa_s->p2p_persistent_id,
8099 wpa_s->p2p_pd_before_go_neg,
8100 wpa_s->p2p_go_ht40,
8101 wpa_s->p2p_go_vht,
8102 wpa_s->p2p_go_max_oper_chwidth,
8103 wpa_s->p2p_go_he, NULL, 0);
8104 return ret;
8105 }
8106
8107
wpas_p2p_scan_no_go_seen(struct wpa_supplicant * wpa_s)8108 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
8109 {
8110 int res;
8111
8112 if (!wpa_s->p2p_fallback_to_go_neg ||
8113 wpa_s->p2p_in_provisioning <= 5)
8114 return 0;
8115
8116 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
8117 return 0; /* peer operating as a GO */
8118
8119 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
8120 "fallback to GO Negotiation");
8121 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
8122 "reason=GO-not-found");
8123 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
8124
8125 return res == 1 ? 2 : 1;
8126 }
8127
8128
wpas_p2p_search_delay(struct wpa_supplicant * wpa_s)8129 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
8130 {
8131 struct wpa_supplicant *ifs;
8132
8133 if (wpa_s->wpa_state > WPA_SCANNING) {
8134 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
8135 "concurrent operation",
8136 wpa_s->conf->p2p_search_delay);
8137 return wpa_s->conf->p2p_search_delay;
8138 }
8139
8140 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8141 radio_list) {
8142 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
8143 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
8144 "delay due to concurrent operation on "
8145 "interface %s",
8146 wpa_s->conf->p2p_search_delay,
8147 ifs->ifname);
8148 return wpa_s->conf->p2p_search_delay;
8149 }
8150 }
8151
8152 return 0;
8153 }
8154
8155
wpas_p2p_remove_psk_entry(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)8156 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
8157 struct wpa_ssid *s, const u8 *addr,
8158 int iface_addr)
8159 {
8160 struct psk_list_entry *psk, *tmp;
8161 int changed = 0;
8162
8163 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
8164 list) {
8165 if ((iface_addr && !psk->p2p &&
8166 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
8167 (!iface_addr && psk->p2p &&
8168 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
8169 wpa_dbg(wpa_s, MSG_DEBUG,
8170 "P2P: Remove persistent group PSK list entry for "
8171 MACSTR " p2p=%u",
8172 MAC2STR(psk->addr), psk->p2p);
8173 dl_list_del(&psk->list);
8174 os_free(psk);
8175 changed++;
8176 }
8177 }
8178
8179 return changed;
8180 }
8181
8182
wpas_p2p_new_psk_cb(struct wpa_supplicant * wpa_s,const u8 * mac_addr,const u8 * p2p_dev_addr,const u8 * psk,size_t psk_len)8183 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
8184 const u8 *p2p_dev_addr,
8185 const u8 *psk, size_t psk_len)
8186 {
8187 struct wpa_ssid *ssid = wpa_s->current_ssid;
8188 struct wpa_ssid *persistent;
8189 struct psk_list_entry *p, *last;
8190
8191 if (psk_len != sizeof(p->psk))
8192 return;
8193
8194 if (p2p_dev_addr) {
8195 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
8196 " p2p_dev_addr=" MACSTR,
8197 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
8198 if (is_zero_ether_addr(p2p_dev_addr))
8199 p2p_dev_addr = NULL;
8200 } else {
8201 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
8202 MAC2STR(mac_addr));
8203 }
8204
8205 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
8206 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
8207 /* To be added to persistent group once created */
8208 if (wpa_s->global->add_psk == NULL) {
8209 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
8210 if (wpa_s->global->add_psk == NULL)
8211 return;
8212 }
8213 p = wpa_s->global->add_psk;
8214 if (p2p_dev_addr) {
8215 p->p2p = 1;
8216 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8217 } else {
8218 p->p2p = 0;
8219 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8220 }
8221 os_memcpy(p->psk, psk, psk_len);
8222 return;
8223 }
8224
8225 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
8226 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
8227 return;
8228 }
8229
8230 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
8231 ssid->ssid_len);
8232 if (!persistent) {
8233 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
8234 return;
8235 }
8236
8237 p = os_zalloc(sizeof(*p));
8238 if (p == NULL)
8239 return;
8240 if (p2p_dev_addr) {
8241 p->p2p = 1;
8242 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8243 } else {
8244 p->p2p = 0;
8245 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8246 }
8247 os_memcpy(p->psk, psk, psk_len);
8248
8249 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8250 (last = dl_list_last(&persistent->psk_list,
8251 struct psk_list_entry, list))) {
8252 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8253 MACSTR " (p2p=%u) to make room for a new one",
8254 MAC2STR(last->addr), last->p2p);
8255 dl_list_del(&last->list);
8256 os_free(last);
8257 }
8258
8259 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
8260 p2p_dev_addr ? p2p_dev_addr : mac_addr,
8261 p2p_dev_addr == NULL);
8262 if (p2p_dev_addr) {
8263 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8264 MACSTR, MAC2STR(p2p_dev_addr));
8265 } else {
8266 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8267 MAC2STR(mac_addr));
8268 }
8269 dl_list_add(&persistent->psk_list, &p->list);
8270
8271 if (wpa_s->p2pdev->conf->update_config &&
8272 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
8273 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8274 }
8275
8276
wpas_p2p_remove_psk(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)8277 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8278 struct wpa_ssid *s, const u8 *addr,
8279 int iface_addr)
8280 {
8281 int res;
8282
8283 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8284 if (res > 0 && wpa_s->conf->update_config &&
8285 wpa_config_write(wpa_s->confname, wpa_s->conf))
8286 wpa_dbg(wpa_s, MSG_DEBUG,
8287 "P2P: Failed to update configuration");
8288 }
8289
8290
wpas_p2p_remove_client_go(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)8291 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8292 const u8 *peer, int iface_addr)
8293 {
8294 struct hostapd_data *hapd;
8295 struct hostapd_wpa_psk *psk, *prev, *rem;
8296 struct sta_info *sta;
8297
8298 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8299 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8300 return;
8301
8302 /* Remove per-station PSK entry */
8303 hapd = wpa_s->ap_iface->bss[0];
8304 prev = NULL;
8305 psk = hapd->conf->ssid.wpa_psk;
8306 while (psk) {
8307 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8308 (!iface_addr &&
8309 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8310 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8311 MACSTR " iface_addr=%d",
8312 MAC2STR(peer), iface_addr);
8313 if (prev)
8314 prev->next = psk->next;
8315 else
8316 hapd->conf->ssid.wpa_psk = psk->next;
8317 rem = psk;
8318 psk = psk->next;
8319 os_free(rem);
8320 } else {
8321 prev = psk;
8322 psk = psk->next;
8323 }
8324 }
8325
8326 /* Disconnect from group */
8327 if (iface_addr)
8328 sta = ap_get_sta(hapd, peer);
8329 else
8330 sta = ap_get_sta_p2p(hapd, peer);
8331 if (sta) {
8332 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8333 " (iface_addr=%d) from group",
8334 MAC2STR(peer), iface_addr);
8335 hostapd_drv_sta_deauth(hapd, sta->addr,
8336 WLAN_REASON_DEAUTH_LEAVING);
8337 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8338 }
8339 }
8340
8341
wpas_p2p_remove_client(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)8342 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8343 int iface_addr)
8344 {
8345 struct wpa_ssid *s;
8346 struct wpa_supplicant *w;
8347 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8348
8349 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8350
8351 /* Remove from any persistent group */
8352 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8353 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8354 continue;
8355 if (!iface_addr)
8356 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8357 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8358 }
8359
8360 /* Remove from any operating group */
8361 for (w = wpa_s->global->ifaces; w; w = w->next)
8362 wpas_p2p_remove_client_go(w, peer, iface_addr);
8363 }
8364
8365
wpas_p2p_psk_failure_removal(void * eloop_ctx,void * timeout_ctx)8366 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8367 {
8368 struct wpa_supplicant *wpa_s = eloop_ctx;
8369 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8370 }
8371
8372
wpas_p2p_group_freq_conflict(void * eloop_ctx,void * timeout_ctx)8373 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8374 {
8375 struct wpa_supplicant *wpa_s = eloop_ctx;
8376
8377 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8378 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8379 }
8380
8381
wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant * wpa_s,int freq,struct wpa_ssid * ssid)8382 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8383 struct wpa_ssid *ssid)
8384 {
8385 struct wpa_supplicant *iface;
8386
8387 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8388 if (!iface->current_ssid ||
8389 iface->current_ssid->frequency == freq ||
8390 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8391 !iface->current_ssid->p2p_group))
8392 continue;
8393
8394 /* Remove the connection with least priority */
8395 if (!wpas_is_p2p_prioritized(iface)) {
8396 /* STA connection has priority over existing
8397 * P2P connection, so remove the interface. */
8398 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8399 eloop_register_timeout(0, 0,
8400 wpas_p2p_group_freq_conflict,
8401 iface, NULL);
8402 /* If connection in progress is P2P connection, do not
8403 * proceed for the connection. */
8404 if (wpa_s == iface)
8405 return -1;
8406 else
8407 return 0;
8408 } else {
8409 /* P2P connection has priority, disable the STA network
8410 */
8411 wpa_supplicant_disable_network(wpa_s->global->ifaces,
8412 ssid);
8413 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8414 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8415 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8416 ETH_ALEN);
8417 /* If P2P connection is in progress, continue
8418 * connecting...*/
8419 if (wpa_s == iface)
8420 return 0;
8421 else
8422 return -1;
8423 }
8424 }
8425
8426 return 0;
8427 }
8428
8429
wpas_p2p_4way_hs_failed(struct wpa_supplicant * wpa_s)8430 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8431 {
8432 struct wpa_ssid *ssid = wpa_s->current_ssid;
8433
8434 if (ssid == NULL || !ssid->p2p_group)
8435 return 0;
8436
8437 if (wpa_s->p2p_last_4way_hs_fail &&
8438 wpa_s->p2p_last_4way_hs_fail == ssid) {
8439 u8 go_dev_addr[ETH_ALEN];
8440 struct wpa_ssid *persistent;
8441
8442 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8443 ssid->ssid,
8444 ssid->ssid_len) <= 0) {
8445 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8446 goto disconnect;
8447 }
8448
8449 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8450 MACSTR, MAC2STR(go_dev_addr));
8451 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8452 ssid->ssid,
8453 ssid->ssid_len);
8454 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8455 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8456 goto disconnect;
8457 }
8458 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8459 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8460 persistent->id);
8461 disconnect:
8462 wpa_s->p2p_last_4way_hs_fail = NULL;
8463 /*
8464 * Remove the group from a timeout to avoid issues with caller
8465 * continuing to use the interface if this is on a P2P group
8466 * interface.
8467 */
8468 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8469 wpa_s, NULL);
8470 return 1;
8471 }
8472
8473 wpa_s->p2p_last_4way_hs_fail = ssid;
8474 return 0;
8475 }
8476
8477
8478 #ifdef CONFIG_WPS_NFC
8479
wpas_p2p_nfc_handover(int ndef,struct wpabuf * wsc,struct wpabuf * p2p)8480 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8481 struct wpabuf *p2p)
8482 {
8483 struct wpabuf *ret;
8484 size_t wsc_len;
8485
8486 if (p2p == NULL) {
8487 wpabuf_free(wsc);
8488 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8489 return NULL;
8490 }
8491
8492 wsc_len = wsc ? wpabuf_len(wsc) : 0;
8493 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8494 if (ret == NULL) {
8495 wpabuf_free(wsc);
8496 wpabuf_free(p2p);
8497 return NULL;
8498 }
8499
8500 wpabuf_put_be16(ret, wsc_len);
8501 if (wsc)
8502 wpabuf_put_buf(ret, wsc);
8503 wpabuf_put_be16(ret, wpabuf_len(p2p));
8504 wpabuf_put_buf(ret, p2p);
8505
8506 wpabuf_free(wsc);
8507 wpabuf_free(p2p);
8508 wpa_hexdump_buf(MSG_DEBUG,
8509 "P2P: Generated NFC connection handover message", ret);
8510
8511 if (ndef && ret) {
8512 struct wpabuf *tmp;
8513 tmp = ndef_build_p2p(ret);
8514 wpabuf_free(ret);
8515 if (tmp == NULL) {
8516 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8517 return NULL;
8518 }
8519 ret = tmp;
8520 }
8521
8522 return ret;
8523 }
8524
8525
wpas_p2p_cli_freq(struct wpa_supplicant * wpa_s,struct wpa_ssid ** ssid,u8 * go_dev_addr)8526 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8527 struct wpa_ssid **ssid, u8 *go_dev_addr)
8528 {
8529 struct wpa_supplicant *iface;
8530
8531 if (go_dev_addr)
8532 os_memset(go_dev_addr, 0, ETH_ALEN);
8533 if (ssid)
8534 *ssid = NULL;
8535 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8536 if (iface->wpa_state < WPA_ASSOCIATING ||
8537 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8538 !iface->current_ssid->p2p_group ||
8539 iface->current_ssid->mode != WPAS_MODE_INFRA)
8540 continue;
8541 if (ssid)
8542 *ssid = iface->current_ssid;
8543 if (go_dev_addr)
8544 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8545 return iface->assoc_freq;
8546 }
8547 return 0;
8548 }
8549
8550
wpas_p2p_nfc_handover_req(struct wpa_supplicant * wpa_s,int ndef)8551 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8552 int ndef)
8553 {
8554 struct wpabuf *wsc, *p2p;
8555 struct wpa_ssid *ssid;
8556 u8 go_dev_addr[ETH_ALEN];
8557 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8558
8559 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8560 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8561 return NULL;
8562 }
8563
8564 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8565 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8566 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8567 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8568 return NULL;
8569 }
8570
8571 if (cli_freq == 0) {
8572 wsc = wps_build_nfc_handover_req_p2p(
8573 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8574 } else
8575 wsc = NULL;
8576 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8577 go_dev_addr, ssid ? ssid->ssid : NULL,
8578 ssid ? ssid->ssid_len : 0);
8579
8580 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8581 }
8582
8583
wpas_p2p_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,int tag)8584 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8585 int ndef, int tag)
8586 {
8587 struct wpabuf *wsc, *p2p;
8588 struct wpa_ssid *ssid;
8589 u8 go_dev_addr[ETH_ALEN];
8590 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8591
8592 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8593 return NULL;
8594
8595 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8596 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8597 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8598 return NULL;
8599
8600 if (cli_freq == 0) {
8601 wsc = wps_build_nfc_handover_sel_p2p(
8602 wpa_s->parent->wps,
8603 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8604 DEV_PW_NFC_CONNECTION_HANDOVER,
8605 wpa_s->conf->wps_nfc_dh_pubkey,
8606 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8607 } else
8608 wsc = NULL;
8609 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8610 go_dev_addr, ssid ? ssid->ssid : NULL,
8611 ssid ? ssid->ssid_len : 0);
8612
8613 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8614 }
8615
8616
wpas_p2p_nfc_join_group(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params)8617 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8618 struct p2p_nfc_params *params)
8619 {
8620 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8621 "connection handover (freq=%d)",
8622 params->go_freq);
8623
8624 if (params->go_freq && params->go_ssid_len) {
8625 wpa_s->p2p_wps_method = WPS_NFC;
8626 wpa_s->pending_join_wps_method = WPS_NFC;
8627 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8628 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8629 ETH_ALEN);
8630 return wpas_p2p_join_start(wpa_s, params->go_freq,
8631 params->go_ssid,
8632 params->go_ssid_len);
8633 }
8634
8635 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8636 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8637 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8638 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8639 wpa_s->p2p_go_he,
8640 params->go_ssid_len ? params->go_ssid : NULL,
8641 params->go_ssid_len);
8642 }
8643
8644
wpas_p2p_nfc_auth_join(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int tag)8645 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8646 struct p2p_nfc_params *params, int tag)
8647 {
8648 int res, persistent;
8649 struct wpa_ssid *ssid;
8650
8651 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8652 "connection handover");
8653 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8654 ssid = wpa_s->current_ssid;
8655 if (ssid == NULL)
8656 continue;
8657 if (ssid->mode != WPAS_MODE_P2P_GO)
8658 continue;
8659 if (wpa_s->ap_iface == NULL)
8660 continue;
8661 break;
8662 }
8663 if (wpa_s == NULL) {
8664 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8665 return -1;
8666 }
8667
8668 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8669 DEV_PW_NFC_CONNECTION_HANDOVER &&
8670 !wpa_s->p2pdev->p2p_oob_dev_pw) {
8671 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8672 return -1;
8673 }
8674 res = wpas_ap_wps_add_nfc_pw(
8675 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8676 wpa_s->p2pdev->p2p_oob_dev_pw,
8677 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8678 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8679 if (res)
8680 return res;
8681
8682 if (!tag) {
8683 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8684 return 0;
8685 }
8686
8687 if (!params->peer ||
8688 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8689 return 0;
8690
8691 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8692 " to join", MAC2STR(params->peer->p2p_device_addr));
8693
8694 wpa_s->global->p2p_invite_group = wpa_s;
8695 persistent = ssid->p2p_persistent_group &&
8696 wpas_p2p_get_persistent(wpa_s->p2pdev,
8697 params->peer->p2p_device_addr,
8698 ssid->ssid, ssid->ssid_len);
8699 wpa_s->p2pdev->pending_invite_ssid_id = -1;
8700
8701 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8702 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8703 ssid->ssid, ssid->ssid_len, ssid->frequency,
8704 wpa_s->global->p2p_dev_addr, persistent, 0,
8705 wpa_s->p2pdev->p2p_oob_dev_pw_id);
8706 }
8707
8708
wpas_p2p_nfc_init_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)8709 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8710 struct p2p_nfc_params *params,
8711 int forced_freq)
8712 {
8713 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8714 "connection handover");
8715 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8716 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8717 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8718 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8719 wpa_s->p2p_go_he, NULL, 0);
8720 }
8721
8722
wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)8723 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8724 struct p2p_nfc_params *params,
8725 int forced_freq)
8726 {
8727 int res;
8728
8729 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8730 "connection handover");
8731 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8732 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8733 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8734 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8735 wpa_s->p2p_go_he, NULL, 0);
8736 if (res)
8737 return res;
8738
8739 res = wpas_p2p_listen(wpa_s, 60);
8740 if (res) {
8741 p2p_unauthorize(wpa_s->global->p2p,
8742 params->peer->p2p_device_addr);
8743 }
8744
8745 return res;
8746 }
8747
8748
wpas_p2p_nfc_connection_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int sel,int tag,int forced_freq)8749 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8750 const struct wpabuf *data,
8751 int sel, int tag, int forced_freq)
8752 {
8753 const u8 *pos, *end;
8754 u16 len, id;
8755 struct p2p_nfc_params params;
8756 int res;
8757
8758 os_memset(¶ms, 0, sizeof(params));
8759 params.sel = sel;
8760
8761 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8762
8763 pos = wpabuf_head(data);
8764 end = pos + wpabuf_len(data);
8765
8766 if (end - pos < 2) {
8767 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8768 "attributes");
8769 return -1;
8770 }
8771 len = WPA_GET_BE16(pos);
8772 pos += 2;
8773 if (len > end - pos) {
8774 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8775 "attributes");
8776 return -1;
8777 }
8778 params.wsc_attr = pos;
8779 params.wsc_len = len;
8780 pos += len;
8781
8782 if (end - pos < 2) {
8783 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8784 "attributes");
8785 return -1;
8786 }
8787 len = WPA_GET_BE16(pos);
8788 pos += 2;
8789 if (len > end - pos) {
8790 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8791 "attributes");
8792 return -1;
8793 }
8794 params.p2p_attr = pos;
8795 params.p2p_len = len;
8796 pos += len;
8797
8798 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8799 params.wsc_attr, params.wsc_len);
8800 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8801 params.p2p_attr, params.p2p_len);
8802 if (pos < end) {
8803 wpa_hexdump(MSG_DEBUG,
8804 "P2P: Ignored extra data after P2P attributes",
8805 pos, end - pos);
8806 }
8807
8808 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms);
8809 if (res)
8810 return res;
8811
8812 if (params.next_step == NO_ACTION)
8813 return 0;
8814
8815 if (params.next_step == BOTH_GO) {
8816 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8817 MAC2STR(params.peer->p2p_device_addr));
8818 return 0;
8819 }
8820
8821 if (params.next_step == PEER_CLIENT) {
8822 if (!is_zero_ether_addr(params.go_dev_addr)) {
8823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8824 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8825 " ssid=\"%s\"",
8826 MAC2STR(params.peer->p2p_device_addr),
8827 params.go_freq,
8828 MAC2STR(params.go_dev_addr),
8829 wpa_ssid_txt(params.go_ssid,
8830 params.go_ssid_len));
8831 } else {
8832 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8833 "peer=" MACSTR " freq=%d",
8834 MAC2STR(params.peer->p2p_device_addr),
8835 params.go_freq);
8836 }
8837 return 0;
8838 }
8839
8840 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8841 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8842 MACSTR, MAC2STR(params.peer->p2p_device_addr));
8843 return 0;
8844 }
8845
8846 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8847 wpa_s->p2p_oob_dev_pw = NULL;
8848
8849 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8850 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8851 "received");
8852 return -1;
8853 }
8854
8855 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8856 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8857 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8858 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8859 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8860 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8861 wpa_s->p2p_peer_oob_pk_hash_known = 1;
8862
8863 if (tag) {
8864 if (id < 0x10) {
8865 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8866 "peer OOB Device Password Id %u", id);
8867 return -1;
8868 }
8869 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8870 "Device Password Id %u", id);
8871 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8872 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8873 params.oob_dev_pw_len -
8874 WPS_OOB_PUBKEY_HASH_LEN - 2);
8875 wpa_s->p2p_oob_dev_pw_id = id;
8876 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8877 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8878 params.oob_dev_pw_len -
8879 WPS_OOB_PUBKEY_HASH_LEN - 2);
8880 if (wpa_s->p2p_oob_dev_pw == NULL)
8881 return -1;
8882
8883 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8884 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8885 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8886 return -1;
8887 } else {
8888 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8889 "without Device Password");
8890 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8891 }
8892
8893 switch (params.next_step) {
8894 case NO_ACTION:
8895 case BOTH_GO:
8896 case PEER_CLIENT:
8897 /* already covered above */
8898 return 0;
8899 case JOIN_GROUP:
8900 return wpas_p2p_nfc_join_group(wpa_s, ¶ms);
8901 case AUTH_JOIN:
8902 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag);
8903 case INIT_GO_NEG:
8904 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq);
8905 case RESP_GO_NEG:
8906 /* TODO: use own OOB Dev Pw */
8907 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq);
8908 }
8909
8910 return -1;
8911 }
8912
8913
wpas_p2p_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int forced_freq)8914 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8915 const struct wpabuf *data, int forced_freq)
8916 {
8917 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8918 return -1;
8919
8920 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8921 }
8922
8923
wpas_p2p_nfc_report_handover(struct wpa_supplicant * wpa_s,int init,const struct wpabuf * req,const struct wpabuf * sel,int forced_freq)8924 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8925 const struct wpabuf *req,
8926 const struct wpabuf *sel, int forced_freq)
8927 {
8928 struct wpabuf *tmp;
8929 int ret;
8930
8931 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8932 return -1;
8933
8934 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8935
8936 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8937 wpabuf_head(req), wpabuf_len(req));
8938 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8939 wpabuf_head(sel), wpabuf_len(sel));
8940 if (forced_freq)
8941 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8942 tmp = ndef_parse_p2p(init ? sel : req);
8943 if (tmp == NULL) {
8944 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8945 return -1;
8946 }
8947
8948 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8949 forced_freq);
8950 wpabuf_free(tmp);
8951
8952 return ret;
8953 }
8954
8955
wpas_p2p_nfc_tag_enabled(struct wpa_supplicant * wpa_s,int enabled)8956 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8957 {
8958 const u8 *if_addr;
8959 int go_intent = wpa_s->conf->p2p_go_intent;
8960 struct wpa_supplicant *iface;
8961
8962 if (wpa_s->global->p2p == NULL)
8963 return -1;
8964
8965 if (!enabled) {
8966 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8967 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8968 {
8969 if (!iface->ap_iface)
8970 continue;
8971 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8972 }
8973 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8974 0, NULL);
8975 if (wpa_s->p2p_nfc_tag_enabled)
8976 wpas_p2p_remove_pending_group_interface(wpa_s);
8977 wpa_s->p2p_nfc_tag_enabled = 0;
8978 return 0;
8979 }
8980
8981 if (wpa_s->global->p2p_disabled)
8982 return -1;
8983
8984 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8985 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8986 wpa_s->conf->wps_nfc_dev_pw == NULL ||
8987 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8988 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8989 "to allow static handover cases");
8990 return -1;
8991 }
8992
8993 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8994
8995 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8996 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8997 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8998 if (wpa_s->p2p_oob_dev_pw == NULL)
8999 return -1;
9000 wpa_s->p2p_peer_oob_pk_hash_known = 0;
9001
9002 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
9003 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
9004 /*
9005 * P2P Group Interface present and the command came on group
9006 * interface, so enable the token for the current interface.
9007 */
9008 wpa_s->create_p2p_iface = 0;
9009 } else {
9010 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
9011 }
9012
9013 if (wpa_s->create_p2p_iface) {
9014 enum wpa_driver_if_type iftype;
9015 /* Prepare to add a new interface for the group */
9016 iftype = WPA_IF_P2P_GROUP;
9017 if (go_intent == 15)
9018 iftype = WPA_IF_P2P_GO;
9019 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
9020 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
9021 "interface for the group");
9022 return -1;
9023 }
9024
9025 if_addr = wpa_s->pending_interface_addr;
9026 } else if (wpa_s->p2p_mgmt)
9027 if_addr = wpa_s->parent->own_addr;
9028 else
9029 if_addr = wpa_s->own_addr;
9030
9031 wpa_s->p2p_nfc_tag_enabled = enabled;
9032
9033 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
9034 struct hostapd_data *hapd;
9035 if (iface->ap_iface == NULL)
9036 continue;
9037 hapd = iface->ap_iface->bss[0];
9038 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
9039 hapd->conf->wps_nfc_dh_pubkey =
9040 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
9041 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
9042 hapd->conf->wps_nfc_dh_privkey =
9043 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
9044 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
9045 hapd->conf->wps_nfc_dev_pw =
9046 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
9047 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
9048
9049 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
9050 wpa_dbg(iface, MSG_DEBUG,
9051 "P2P: Failed to enable NFC Tag for GO");
9052 }
9053 }
9054 p2p_set_authorized_oob_dev_pw_id(
9055 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
9056 if_addr);
9057
9058 return 0;
9059 }
9060
9061 #endif /* CONFIG_WPS_NFC */
9062
9063
wpas_p2p_optimize_listen_channel(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)9064 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
9065 struct wpa_used_freq_data *freqs,
9066 unsigned int num)
9067 {
9068 u8 curr_chan, cand, chan;
9069 unsigned int i;
9070
9071 /*
9072 * If possible, optimize the Listen channel to be a channel that is
9073 * already used by one of the other interfaces.
9074 */
9075 if (!wpa_s->conf->p2p_optimize_listen_chan)
9076 return;
9077
9078 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
9079 return;
9080
9081 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
9082 for (i = 0, cand = 0; i < num; i++) {
9083 ieee80211_freq_to_chan(freqs[i].freq, &chan);
9084 if (curr_chan == chan) {
9085 cand = 0;
9086 break;
9087 }
9088
9089 if (chan == 1 || chan == 6 || chan == 11)
9090 cand = chan;
9091 }
9092
9093 if (cand) {
9094 wpa_dbg(wpa_s, MSG_DEBUG,
9095 "P2P: Update Listen channel to %u based on operating channel",
9096 cand);
9097 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
9098 }
9099 }
9100
9101
wpas_p2p_move_go_csa(struct wpa_supplicant * wpa_s)9102 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
9103 {
9104 struct hostapd_config *conf;
9105 struct p2p_go_neg_results params;
9106 struct csa_settings csa_settings;
9107 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9108 int old_freq = current_ssid->frequency;
9109 int ret;
9110
9111 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
9112 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
9113 return -1;
9114 }
9115
9116 /*
9117 * TODO: This function may not always work correctly. For example,
9118 * when we have a running GO and a BSS on a DFS channel.
9119 */
9120 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) {
9121 wpa_dbg(wpa_s, MSG_DEBUG,
9122 "P2P CSA: Failed to select new frequency for GO");
9123 return -1;
9124 }
9125
9126 if (current_ssid->frequency == params.freq) {
9127 wpa_dbg(wpa_s, MSG_DEBUG,
9128 "P2P CSA: Selected same frequency - not moving GO");
9129 return 0;
9130 }
9131
9132 conf = hostapd_config_defaults();
9133 if (!conf) {
9134 wpa_dbg(wpa_s, MSG_DEBUG,
9135 "P2P CSA: Failed to allocate default config");
9136 return -1;
9137 }
9138
9139 current_ssid->frequency = params.freq;
9140 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
9141 wpa_dbg(wpa_s, MSG_DEBUG,
9142 "P2P CSA: Failed to create new GO config");
9143 ret = -1;
9144 goto out;
9145 }
9146
9147 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
9148 wpa_dbg(wpa_s, MSG_DEBUG,
9149 "P2P CSA: CSA to a different band is not supported");
9150 ret = -1;
9151 goto out;
9152 }
9153
9154 os_memset(&csa_settings, 0, sizeof(csa_settings));
9155 csa_settings.cs_count = P2P_GO_CSA_COUNT;
9156 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
9157 csa_settings.freq_params.freq = params.freq;
9158 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
9159 csa_settings.freq_params.ht_enabled = conf->ieee80211n;
9160 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
9161
9162 if (conf->ieee80211ac) {
9163 int freq1 = 0, freq2 = 0;
9164 u8 chan, opclass;
9165
9166 if (ieee80211_freq_to_channel_ext(params.freq,
9167 conf->secondary_channel,
9168 conf->vht_oper_chwidth,
9169 &opclass, &chan) ==
9170 NUM_HOSTAPD_MODES) {
9171 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
9172 ret = -1;
9173 goto out;
9174 }
9175
9176 if (conf->vht_oper_centr_freq_seg0_idx)
9177 freq1 = ieee80211_chan_to_freq(
9178 NULL, opclass,
9179 conf->vht_oper_centr_freq_seg0_idx);
9180
9181 if (conf->vht_oper_centr_freq_seg1_idx)
9182 freq2 = ieee80211_chan_to_freq(
9183 NULL, opclass,
9184 conf->vht_oper_centr_freq_seg1_idx);
9185
9186 if (freq1 < 0 || freq2 < 0) {
9187 wpa_dbg(wpa_s, MSG_DEBUG,
9188 "P2P CSA: Selected invalid VHT center freqs");
9189 ret = -1;
9190 goto out;
9191 }
9192
9193 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
9194 csa_settings.freq_params.center_freq1 = freq1;
9195 csa_settings.freq_params.center_freq2 = freq2;
9196
9197 switch (conf->vht_oper_chwidth) {
9198 case CHANWIDTH_80MHZ:
9199 case CHANWIDTH_80P80MHZ:
9200 csa_settings.freq_params.bandwidth = 80;
9201 break;
9202 case CHANWIDTH_160MHZ:
9203 csa_settings.freq_params.bandwidth = 160;
9204 break;
9205 }
9206 }
9207
9208 ret = ap_switch_channel(wpa_s, &csa_settings);
9209 out:
9210 current_ssid->frequency = old_freq;
9211 hostapd_config_free(conf);
9212 return ret;
9213 }
9214
9215
wpas_p2p_move_go_no_csa(struct wpa_supplicant * wpa_s)9216 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
9217 {
9218 struct p2p_go_neg_results params;
9219 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9220
9221 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
9222
9223 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
9224 current_ssid->frequency);
9225
9226 /* Stop the AP functionality */
9227 /* TODO: Should do this in a way that does not indicated to possible
9228 * P2P Clients in the group that the group is terminated. */
9229 wpa_supplicant_ap_deinit(wpa_s);
9230
9231 /* Reselect the GO frequency */
9232 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, 0, NULL)) {
9233 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
9234 wpas_p2p_group_delete(wpa_s,
9235 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9236 return;
9237 }
9238 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
9239 params.freq);
9240
9241 if (params.freq &&
9242 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
9243 wpa_printf(MSG_DEBUG,
9244 "P2P: Selected freq (%u MHz) is not valid for P2P",
9245 params.freq);
9246 wpas_p2p_group_delete(wpa_s,
9247 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9248 return;
9249 }
9250
9251 /* Update the frequency */
9252 current_ssid->frequency = params.freq;
9253 wpa_s->connect_without_scan = current_ssid;
9254 wpa_s->reassociate = 1;
9255 wpa_s->disconnected = 0;
9256 wpa_supplicant_req_scan(wpa_s, 0, 0);
9257 }
9258
9259
wpas_p2p_move_go(void * eloop_ctx,void * timeout_ctx)9260 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
9261 {
9262 struct wpa_supplicant *wpa_s = eloop_ctx;
9263
9264 if (!wpa_s->ap_iface || !wpa_s->current_ssid)
9265 return;
9266
9267 wpas_p2p_go_update_common_freqs(wpa_s);
9268
9269 /* Do not move GO in the middle of a CSA */
9270 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9271 wpa_printf(MSG_DEBUG,
9272 "P2P: CSA is in progress - not moving GO");
9273 return;
9274 }
9275
9276 /*
9277 * First, try a channel switch flow. If it is not supported or fails,
9278 * take down the GO and bring it up again.
9279 */
9280 if (wpas_p2p_move_go_csa(wpa_s) < 0)
9281 wpas_p2p_move_go_no_csa(wpa_s);
9282 }
9283
9284
wpas_p2p_reconsider_moving_go(void * eloop_ctx,void * timeout_ctx)9285 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9286 {
9287 struct wpa_supplicant *wpa_s = eloop_ctx;
9288 struct wpa_used_freq_data *freqs = NULL;
9289 unsigned int num = wpa_s->num_multichan_concurrent;
9290
9291 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9292 if (!freqs)
9293 return;
9294
9295 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9296
9297 /* Previous attempt to move a GO was not possible -- try again. */
9298 wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9299 WPAS_P2P_CHANNEL_UPDATE_ANY);
9300
9301 os_free(freqs);
9302 }
9303
9304
9305 /*
9306 * Consider moving a GO from its currently used frequency:
9307 * 1. It is possible that due to regulatory consideration the frequency
9308 * can no longer be used and there is a need to evacuate the GO.
9309 * 2. It is possible that due to MCC considerations, it would be preferable
9310 * to move the GO to a channel that is currently used by some other
9311 * station interface.
9312 *
9313 * In case a frequency that became invalid is once again valid, cancel a
9314 * previously initiated GO frequency change.
9315 */
wpas_p2p_consider_moving_one_go(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)9316 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9317 struct wpa_used_freq_data *freqs,
9318 unsigned int num)
9319 {
9320 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9321 unsigned int timeout;
9322 int freq;
9323 int dfs_offload;
9324
9325 wpas_p2p_go_update_common_freqs(wpa_s);
9326
9327 freq = wpa_s->current_ssid->frequency;
9328 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
9329 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes);
9330 for (i = 0, invalid_freq = 0; i < num; i++) {
9331 if (freqs[i].freq == freq) {
9332 flags = freqs[i].flags;
9333
9334 /* The channel is invalid, must change it */
9335 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
9336 !dfs_offload) {
9337 wpa_dbg(wpa_s, MSG_DEBUG,
9338 "P2P: Freq=%d MHz no longer valid for GO",
9339 freq);
9340 invalid_freq = 1;
9341 }
9342 } else if (freqs[i].flags == 0) {
9343 /* Freq is not used by any other station interface */
9344 continue;
9345 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9346 freqs[i].freq) && !dfs_offload) {
9347 /* Freq is not valid for P2P use cases */
9348 continue;
9349 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9350 P2P_GO_FREQ_MOVE_SCM) {
9351 policy_move = 1;
9352 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9353 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9354 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9355 policy_move = 1;
9356 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9357 P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9358 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9359 if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9360 policy_move = 1;
9361 } else if ((wpa_s->drv_flags &
9362 WPA_DRIVER_FLAGS_AP_CSA) &&
9363 wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9364 u8 chan;
9365
9366 /*
9367 * We do not support CSA between bands, so move
9368 * GO only within the same band.
9369 */
9370 if (wpa_s->ap_iface->current_mode->mode ==
9371 ieee80211_freq_to_chan(freqs[i].freq,
9372 &chan))
9373 policy_move = 1;
9374 }
9375 }
9376 }
9377
9378 wpa_dbg(wpa_s, MSG_DEBUG,
9379 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9380 invalid_freq, policy_move, flags);
9381
9382 /*
9383 * The channel is valid, or we are going to have a policy move, so
9384 * cancel timeout.
9385 */
9386 if (!invalid_freq || policy_move) {
9387 wpa_dbg(wpa_s, MSG_DEBUG,
9388 "P2P: Cancel a GO move from freq=%d MHz", freq);
9389 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9390
9391 if (wpas_p2p_in_progress(wpa_s)) {
9392 wpa_dbg(wpa_s, MSG_DEBUG,
9393 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9394 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9395 wpa_s, NULL);
9396 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9397 wpas_p2p_reconsider_moving_go,
9398 wpa_s, NULL);
9399 return;
9400 }
9401 }
9402
9403 if (!invalid_freq && (!policy_move || flags != 0)) {
9404 wpa_dbg(wpa_s, MSG_DEBUG,
9405 "P2P: Not initiating a GO frequency change");
9406 return;
9407 }
9408
9409 /*
9410 * Do not consider moving GO if it is in the middle of a CSA. When the
9411 * CSA is finished this flow should be retriggered.
9412 */
9413 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9414 wpa_dbg(wpa_s, MSG_DEBUG,
9415 "P2P: Not initiating a GO frequency change - CSA is in progress");
9416 return;
9417 }
9418
9419 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9420 timeout = P2P_GO_FREQ_CHANGE_TIME;
9421 else
9422 timeout = 0;
9423
9424 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9425 freq, timeout);
9426 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9427 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9428 }
9429
9430
wpas_p2p_consider_moving_gos(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num,enum wpas_p2p_channel_update_trig trig)9431 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9432 struct wpa_used_freq_data *freqs,
9433 unsigned int num,
9434 enum wpas_p2p_channel_update_trig trig)
9435 {
9436 struct wpa_supplicant *ifs;
9437
9438 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9439 NULL);
9440
9441 /*
9442 * Travers all the radio interfaces, and for each GO interface, check
9443 * if there is a need to move the GO from the frequency it is using,
9444 * or in case the frequency is valid again, cancel the evacuation flow.
9445 */
9446 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9447 radio_list) {
9448 if (ifs->current_ssid == NULL ||
9449 ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9450 continue;
9451
9452 /*
9453 * The GO was just started or completed channel switch, no need
9454 * to move it.
9455 */
9456 if (wpa_s == ifs &&
9457 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9458 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9459 wpa_dbg(wpa_s, MSG_DEBUG,
9460 "P2P: GO move - schedule re-consideration");
9461 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9462 wpas_p2p_reconsider_moving_go,
9463 wpa_s, NULL);
9464 continue;
9465 }
9466
9467 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9468 }
9469 }
9470
9471
wpas_p2p_indicate_state_change(struct wpa_supplicant * wpa_s)9472 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9473 {
9474 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9475 return;
9476
9477 wpas_p2p_update_channel_list(wpa_s,
9478 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9479 }
9480
9481
wpas_p2p_deinit_iface(struct wpa_supplicant * wpa_s)9482 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9483 {
9484 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9485 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9486 "the management interface is being removed");
9487 wpas_p2p_deinit_global(wpa_s->global);
9488 }
9489 }
9490
9491
wpas_p2p_ap_deinit(struct wpa_supplicant * wpa_s)9492 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9493 {
9494 if (wpa_s->ap_iface->bss)
9495 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9496 wpas_p2p_group_deinit(wpa_s);
9497 }
9498
9499
wpas_p2p_lo_start(struct wpa_supplicant * wpa_s,unsigned int freq,unsigned int period,unsigned int interval,unsigned int count)9500 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9501 unsigned int period, unsigned int interval,
9502 unsigned int count)
9503 {
9504 struct p2p_data *p2p = wpa_s->global->p2p;
9505 u8 *device_types;
9506 size_t dev_types_len;
9507 struct wpabuf *buf;
9508 int ret;
9509
9510 if (wpa_s->p2p_lo_started) {
9511 wpa_dbg(wpa_s, MSG_DEBUG,
9512 "P2P Listen offload is already started");
9513 return 0;
9514 }
9515
9516 if (wpa_s->global->p2p == NULL ||
9517 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9518 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9519 return -1;
9520 }
9521
9522 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9523 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9524 freq);
9525 return -1;
9526 }
9527
9528 /* Get device type */
9529 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9530 WPS_DEV_TYPE_LEN;
9531 device_types = os_malloc(dev_types_len);
9532 if (!device_types)
9533 return -1;
9534 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9535 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9536 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9537
9538 /* Get Probe Response IE(s) */
9539 buf = p2p_build_probe_resp_template(p2p, freq);
9540 if (!buf) {
9541 os_free(device_types);
9542 return -1;
9543 }
9544
9545 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9546 device_types, dev_types_len,
9547 wpabuf_mhead_u8(buf), wpabuf_len(buf));
9548 if (ret < 0)
9549 wpa_dbg(wpa_s, MSG_DEBUG,
9550 "P2P: Failed to start P2P listen offload");
9551
9552 os_free(device_types);
9553 wpabuf_free(buf);
9554
9555 if (ret == 0) {
9556 wpa_s->p2p_lo_started = 1;
9557
9558 /* Stop current P2P listen if any */
9559 wpas_stop_listen(wpa_s);
9560 }
9561
9562 return ret;
9563 }
9564
9565
wpas_p2p_lo_stop(struct wpa_supplicant * wpa_s)9566 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9567 {
9568 int ret;
9569
9570 if (!wpa_s->p2p_lo_started)
9571 return 0;
9572
9573 ret = wpa_drv_p2p_lo_stop(wpa_s);
9574 if (ret < 0)
9575 wpa_dbg(wpa_s, MSG_DEBUG,
9576 "P2P: Failed to stop P2P listen offload");
9577
9578 wpa_s->p2p_lo_started = 0;
9579 return ret;
9580 }
9581