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52 * it is currently using, but is no longer valid for P2P use cases.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57 * Defines CSA parameters which are used when GO evacuates the no longer valid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
752 default:
753 return P2PS_SETUP_NONE;
754 }
755 }
756
757 /*
758 * For now, we only will support ownership of one group, and being a
759 * client of one group. Therefore, if we have either an existing GO
760 * group, or an existing client group, we will not do a new GO
761 * negotiation, but rather try to re-use the existing groups.
762 */
763 switch (incoming) {
764 case P2PS_SETUP_NONE:
765 case P2PS_SETUP_NEW:
766 if (cli_wpa_s)
767 conncap = P2PS_SETUP_GROUP_OWNER;
768 else if (!owned_members)
769 conncap = P2PS_SETUP_NEW;
770 else if (incoming == P2PS_SETUP_NONE)
771 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
772 else
773 conncap = P2PS_SETUP_CLIENT;
774 break;
775
776 case P2PS_SETUP_CLIENT:
777 conncap = P2PS_SETUP_GROUP_OWNER;
778 break;
779
780 case P2PS_SETUP_GROUP_OWNER:
781 if (!cli_wpa_s)
782 conncap = P2PS_SETUP_CLIENT;
783 break;
784
785 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
786 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
787 if (cli_wpa_s)
788 conncap = P2PS_SETUP_GROUP_OWNER;
789 else {
790 u8 r;
791
792 if (os_get_random(&r, sizeof(r)) < 0 ||
793 (r & 1))
794 conncap = P2PS_SETUP_CLIENT;
795 else
796 conncap = P2PS_SETUP_GROUP_OWNER;
797 }
798 break;
799
800 default:
801 return P2PS_SETUP_NONE;
802 }
803
804 grp_owner:
805 if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
806 (!incoming && (conncap & P2PS_SETUP_NEW))) {
807 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
808 conncap &= ~P2PS_SETUP_GROUP_OWNER;
809
810 s = wpas_p2p_get_persistent_go(wpa_s);
811 if (!s && !go_wpa_s && p2p_no_group_iface) {
812 p2p_set_intended_addr(wpa_s->global->p2p,
813 wpa_s->p2p_mgmt ?
814 wpa_s->parent->own_addr :
815 wpa_s->own_addr);
816 } else if (!s && !go_wpa_s) {
817 if (wpas_p2p_add_group_interface(wpa_s,
818 WPA_IF_P2P_GROUP) < 0) {
819 wpa_printf(MSG_ERROR,
820 "P2P: Failed to allocate a new interface for the group");
821 return P2PS_SETUP_NONE;
822 }
823 wpa_s->global->pending_group_iface_for_p2ps = 1;
824 p2p_set_intended_addr(wpa_s->global->p2p,
825 wpa_s->pending_interface_addr);
826 }
827 }
828
829 return conncap;
830 }
831
832
wpas_p2p_group_delete(struct wpa_supplicant * wpa_s,enum p2p_group_removal_reason removal_reason)833 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
834 enum p2p_group_removal_reason removal_reason)
835 {
836 struct wpa_ssid *ssid;
837 char *gtype;
838 const char *reason;
839
840 ssid = wpa_s->current_ssid;
841 if (ssid == NULL) {
842 /*
843 * The current SSID was not known, but there may still be a
844 * pending P2P group interface waiting for provisioning or a
845 * P2P group that is trying to reconnect.
846 */
847 ssid = wpa_s->conf->ssid;
848 while (ssid) {
849 if (ssid->p2p_group && ssid->disabled != 2)
850 break;
851 ssid = ssid->next;
852 }
853 if (ssid == NULL &&
854 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
855 {
856 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
857 "not found");
858 return -1;
859 }
860 }
861 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
862 gtype = "GO";
863 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
864 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
865 wpa_s->reassociate = 0;
866 wpa_s->disconnected = 1;
867 gtype = "client";
868 } else
869 gtype = "GO";
870
871 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
872 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
873
874 if (os_strcmp(gtype, "client") == 0) {
875 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
876 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
877 wpa_s, NULL)) {
878 wpa_printf(MSG_DEBUG,
879 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
880 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
881 eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
882 wpa_s, NULL);
883 }
884 }
885
886 if (wpa_s->cross_connect_in_use) {
887 wpa_s->cross_connect_in_use = 0;
888 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
889 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
890 wpa_s->ifname, wpa_s->cross_connect_uplink);
891 }
892 switch (removal_reason) {
893 case P2P_GROUP_REMOVAL_REQUESTED:
894 reason = " reason=REQUESTED";
895 break;
896 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
897 reason = " reason=FORMATION_FAILED";
898 break;
899 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
900 reason = " reason=IDLE";
901 break;
902 case P2P_GROUP_REMOVAL_UNAVAILABLE:
903 reason = " reason=UNAVAILABLE";
904 break;
905 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
906 reason = " reason=GO_ENDING_SESSION";
907 break;
908 case P2P_GROUP_REMOVAL_PSK_FAILURE:
909 reason = " reason=PSK_FAILURE";
910 break;
911 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
912 reason = " reason=FREQ_CONFLICT";
913 break;
914 default:
915 reason = "";
916 break;
917 }
918 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
919 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
920 P2P_EVENT_GROUP_REMOVED "%s %s%s",
921 wpa_s->ifname, gtype, reason);
922 }
923
924 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
925 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
926 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
927 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
928 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
929 wpa_s->p2pdev, NULL) > 0) {
930 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
931 "timeout");
932 wpa_s->p2p_in_provisioning = 0;
933 wpas_p2p_group_formation_failed(wpa_s, 1);
934 }
935
936 wpa_s->p2p_in_invitation = 0;
937 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
938 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
939
940 /*
941 * Make sure wait for the first client does not remain active after the
942 * group has been removed.
943 */
944 wpa_s->global->p2p_go_wait_client.sec = 0;
945
946 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
947 struct wpa_global *global;
948 char *ifname;
949 enum wpa_driver_if_type type;
950 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
951 wpa_s->ifname);
952 global = wpa_s->global;
953 ifname = os_strdup(wpa_s->ifname);
954 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
955 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
956 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
957 wpa_s = global->ifaces;
958 if (wpa_s && ifname)
959 wpa_drv_if_remove(wpa_s, type, ifname);
960 os_free(ifname);
961 return 1;
962 }
963
964 /*
965 * The primary interface was used for P2P group operations, so
966 * need to reset its p2pdev.
967 */
968 wpa_s->p2pdev = wpa_s->parent;
969
970 if (!wpa_s->p2p_go_group_formation_completed) {
971 wpa_s->global->p2p_group_formation = NULL;
972 wpa_s->p2p_in_provisioning = 0;
973 }
974
975 wpa_s->show_group_started = 0;
976 os_free(wpa_s->go_params);
977 wpa_s->go_params = NULL;
978
979 os_free(wpa_s->p2p_group_common_freqs);
980 wpa_s->p2p_group_common_freqs = NULL;
981 wpa_s->p2p_group_common_freqs_num = 0;
982
983 wpa_s->waiting_presence_resp = 0;
984
985 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
986 if (ssid && (ssid->p2p_group ||
987 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
988 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
989 int id = ssid->id;
990 if (ssid == wpa_s->current_ssid) {
991 wpa_sm_set_config(wpa_s->wpa, NULL);
992 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
993 wpa_s->current_ssid = NULL;
994 }
995 /*
996 * Networks objects created during any P2P activities are not
997 * exposed out as they might/will confuse certain non-P2P aware
998 * applications since these network objects won't behave like
999 * regular ones.
1000 *
1001 * Likewise, we don't send out network removed signals for such
1002 * network objects.
1003 */
1004 wpa_config_remove_network(wpa_s->conf, id);
1005 wpa_supplicant_clear_status(wpa_s);
1006 wpa_supplicant_cancel_sched_scan(wpa_s);
1007 } else {
1008 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1009 "found");
1010 }
1011 if (wpa_s->ap_iface)
1012 wpa_supplicant_ap_deinit(wpa_s);
1013 else
1014 wpa_drv_deinit_p2p_cli(wpa_s);
1015
1016 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1017
1018 return 0;
1019 }
1020
1021
wpas_p2p_persistent_group(struct wpa_supplicant * wpa_s,u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)1022 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1023 u8 *go_dev_addr,
1024 const u8 *ssid, size_t ssid_len)
1025 {
1026 struct wpa_bss *bss;
1027 const u8 *bssid;
1028 struct wpabuf *p2p;
1029 u8 group_capab;
1030 const u8 *addr;
1031
1032 if (wpa_s->go_params)
1033 bssid = wpa_s->go_params->peer_interface_addr;
1034 else
1035 bssid = wpa_s->bssid;
1036
1037 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1038 if (bss == NULL && wpa_s->go_params &&
1039 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1040 bss = wpa_bss_get_p2p_dev_addr(
1041 wpa_s, wpa_s->go_params->peer_device_addr);
1042 if (bss == NULL) {
1043 u8 iface_addr[ETH_ALEN];
1044 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1045 iface_addr) == 0)
1046 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1047 }
1048 if (bss == NULL) {
1049 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1050 "group is persistent - BSS " MACSTR " not found",
1051 MAC2STR(bssid));
1052 return 0;
1053 }
1054
1055 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1056 if (p2p == NULL)
1057 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1058 P2P_IE_VENDOR_TYPE);
1059 if (p2p == NULL) {
1060 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1061 "group is persistent - BSS " MACSTR
1062 " did not include P2P IE", MAC2STR(bssid));
1063 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1064 (u8 *) (bss + 1), bss->ie_len);
1065 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1066 ((u8 *) bss + 1) + bss->ie_len,
1067 bss->beacon_ie_len);
1068 return 0;
1069 }
1070
1071 group_capab = p2p_get_group_capab(p2p);
1072 addr = p2p_get_go_dev_addr(p2p);
1073 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1074 "group_capab=0x%x", group_capab);
1075 if (addr) {
1076 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1077 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1078 MAC2STR(addr));
1079 } else
1080 os_memset(go_dev_addr, 0, ETH_ALEN);
1081 wpabuf_free(p2p);
1082
1083 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1084 "go_dev_addr=" MACSTR,
1085 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1086
1087 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP);
1088 }
1089
1090
wpas_p2p_store_persistent_group(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * go_dev_addr)1091 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1092 struct wpa_ssid *ssid,
1093 const u8 *go_dev_addr)
1094 {
1095 struct wpa_ssid *s;
1096 int changed = 0;
1097
1098 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1099 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1100 for (s = wpa_s->conf->ssid; s; s = s->next) {
1101 if (s->disabled == 2 &&
1102 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1103 s->ssid_len == ssid->ssid_len &&
1104 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1105 break;
1106 }
1107
1108 if (s) {
1109 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1110 "entry");
1111 if (ssid->passphrase && !s->passphrase)
1112 changed = 1;
1113 else if (ssid->passphrase && s->passphrase &&
1114 os_strcmp(ssid->passphrase, s->passphrase) != 0)
1115 changed = 1;
1116 } else {
1117 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1118 "entry");
1119 changed = 1;
1120 s = wpa_config_add_network(wpa_s->conf);
1121 if (s == NULL)
1122 return -1;
1123
1124 /*
1125 * Instead of network_added we emit persistent_group_added
1126 * notification. Also to keep the defense checks in
1127 * persistent_group obj registration method, we set the
1128 * relevant flags in s to designate it as a persistent group.
1129 */
1130 s->p2p_group = 1;
1131 s->p2p_persistent_group = 1;
1132 wpas_notify_persistent_group_added(wpa_s, s);
1133 wpa_config_set_network_defaults(s);
1134 }
1135
1136 s->p2p_group = 1;
1137 s->p2p_persistent_group = 1;
1138 s->disabled = 2;
1139 s->bssid_set = 1;
1140 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1141 s->mode = ssid->mode;
1142 s->auth_alg = WPA_AUTH_ALG_OPEN;
1143 s->key_mgmt = WPA_KEY_MGMT_PSK;
1144 s->proto = WPA_PROTO_RSN;
1145 s->pbss = ssid->pbss;
1146 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1147 s->export_keys = 1;
1148 if (ssid->passphrase) {
1149 os_free(s->passphrase);
1150 s->passphrase = os_strdup(ssid->passphrase);
1151 }
1152 if (ssid->psk_set) {
1153 s->psk_set = 1;
1154 os_memcpy(s->psk, ssid->psk, 32);
1155 }
1156 if (s->passphrase && !s->psk_set)
1157 wpa_config_update_psk(s);
1158 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1159 os_free(s->ssid);
1160 s->ssid = os_malloc(ssid->ssid_len);
1161 }
1162 if (s->ssid) {
1163 s->ssid_len = ssid->ssid_len;
1164 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1165 }
1166 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1167 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1168 wpa_s->global->add_psk = NULL;
1169 changed = 1;
1170 }
1171
1172 if (changed && wpa_s->conf->update_config &&
1173 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1174 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1175 }
1176
1177 return s->id;
1178 }
1179
1180
wpas_p2p_add_persistent_group_client(struct wpa_supplicant * wpa_s,const u8 * addr)1181 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1182 const u8 *addr)
1183 {
1184 struct wpa_ssid *ssid, *s;
1185 u8 *n;
1186 size_t i;
1187 int found = 0;
1188 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1189
1190 ssid = wpa_s->current_ssid;
1191 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1192 !ssid->p2p_persistent_group)
1193 return;
1194
1195 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1196 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1197 continue;
1198
1199 if (s->ssid_len == ssid->ssid_len &&
1200 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1201 break;
1202 }
1203
1204 if (s == NULL)
1205 return;
1206
1207 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1208 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1209 ETH_ALEN) != 0)
1210 continue;
1211
1212 if (i == s->num_p2p_clients - 1)
1213 return; /* already the most recent entry */
1214
1215 /* move the entry to mark it most recent */
1216 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1217 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1218 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1219 os_memcpy(s->p2p_client_list +
1220 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1221 ETH_ALEN);
1222 os_memset(s->p2p_client_list +
1223 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1224 0xff, ETH_ALEN);
1225 found = 1;
1226 break;
1227 }
1228
1229 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1230 n = os_realloc_array(s->p2p_client_list,
1231 s->num_p2p_clients + 1, 2 * ETH_ALEN);
1232 if (n == NULL)
1233 return;
1234 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1235 ETH_ALEN);
1236 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1237 0xff, ETH_ALEN);
1238 s->p2p_client_list = n;
1239 s->num_p2p_clients++;
1240 } else if (!found && s->p2p_client_list) {
1241 /* Not enough room for an additional entry - drop the oldest
1242 * entry */
1243 os_memmove(s->p2p_client_list,
1244 s->p2p_client_list + 2 * ETH_ALEN,
1245 (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1246 os_memcpy(s->p2p_client_list +
1247 (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1248 addr, ETH_ALEN);
1249 os_memset(s->p2p_client_list +
1250 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1251 0xff, ETH_ALEN);
1252 }
1253
1254 if (p2p_wpa_s->conf->update_config &&
1255 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1256 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1257 }
1258
1259
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)1260 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1261 int go, struct wpa_ssid *ssid, int freq,
1262 const u8 *psk, const char *passphrase,
1263 const u8 *go_dev_addr, int persistent,
1264 const char *extra)
1265 {
1266 const char *ssid_txt;
1267 char psk_txt[65];
1268
1269 if (psk)
1270 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1271 else
1272 psk_txt[0] = '\0';
1273
1274 if (ssid)
1275 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1276 else
1277 ssid_txt = "";
1278
1279 if (passphrase && passphrase[0] == '\0')
1280 passphrase = NULL;
1281
1282 /*
1283 * Include PSK/passphrase only in the control interface message and
1284 * leave it out from the debug log entry.
1285 */
1286 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1287 P2P_EVENT_GROUP_STARTED
1288 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1289 MACSTR "%s%s",
1290 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1291 psk ? " psk=" : "", psk_txt,
1292 passphrase ? " passphrase=\"" : "",
1293 passphrase ? passphrase : "",
1294 passphrase ? "\"" : "",
1295 MAC2STR(go_dev_addr),
1296 persistent ? " [PERSISTENT]" : "", extra);
1297 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1298 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1299 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1300 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1301 extra);
1302 }
1303
1304
wpas_group_formation_completed(struct wpa_supplicant * wpa_s,int success,int already_deleted)1305 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1306 int success, int already_deleted)
1307 {
1308 struct wpa_ssid *ssid;
1309 int client;
1310 int persistent;
1311 u8 go_dev_addr[ETH_ALEN];
1312
1313 /*
1314 * This callback is likely called for the main interface. Update wpa_s
1315 * to use the group interface if a new interface was created for the
1316 * group.
1317 */
1318 if (wpa_s->global->p2p_group_formation)
1319 wpa_s = wpa_s->global->p2p_group_formation;
1320 if (wpa_s->p2p_go_group_formation_completed) {
1321 wpa_s->global->p2p_group_formation = NULL;
1322 wpa_s->p2p_in_provisioning = 0;
1323 } else if (wpa_s->p2p_in_provisioning && !success) {
1324 wpa_msg(wpa_s, MSG_DEBUG,
1325 "P2P: Stop provisioning state due to failure");
1326 wpa_s->p2p_in_provisioning = 0;
1327 }
1328 wpa_s->p2p_in_invitation = 0;
1329 wpa_s->group_formation_reported = 1;
1330
1331 if (!success) {
1332 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1333 P2P_EVENT_GROUP_FORMATION_FAILURE);
1334 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1335 if (already_deleted)
1336 return;
1337 wpas_p2p_group_delete(wpa_s,
1338 P2P_GROUP_REMOVAL_FORMATION_FAILED);
1339 return;
1340 }
1341
1342 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1343 P2P_EVENT_GROUP_FORMATION_SUCCESS);
1344
1345 ssid = wpa_s->current_ssid;
1346 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1347 ssid->mode = WPAS_MODE_P2P_GO;
1348 p2p_group_notif_formation_done(wpa_s->p2p_group);
1349 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1350 }
1351
1352 persistent = 0;
1353 if (ssid) {
1354 client = ssid->mode == WPAS_MODE_INFRA;
1355 if (ssid->mode == WPAS_MODE_P2P_GO) {
1356 persistent = ssid->p2p_persistent_group;
1357 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1358 ETH_ALEN);
1359 } else
1360 persistent = wpas_p2p_persistent_group(wpa_s,
1361 go_dev_addr,
1362 ssid->ssid,
1363 ssid->ssid_len);
1364 } else {
1365 client = wpa_s->p2p_group_interface ==
1366 P2P_GROUP_INTERFACE_CLIENT;
1367 os_memset(go_dev_addr, 0, ETH_ALEN);
1368 }
1369
1370 wpa_s->show_group_started = 0;
1371 if (client) {
1372 /*
1373 * Indicate event only after successfully completed 4-way
1374 * handshake, i.e., when the interface is ready for data
1375 * packets.
1376 */
1377 wpa_s->show_group_started = 1;
1378 } else {
1379 wpas_p2p_group_started(wpa_s, 1, ssid,
1380 ssid ? ssid->frequency : 0,
1381 ssid && ssid->passphrase == NULL &&
1382 ssid->psk_set ? ssid->psk : NULL,
1383 ssid ? ssid->passphrase : NULL,
1384 go_dev_addr, persistent, "");
1385 wpas_p2p_cross_connect_setup(wpa_s);
1386 wpas_p2p_set_group_idle_timeout(wpa_s);
1387 }
1388
1389 if (persistent)
1390 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1391 ssid, go_dev_addr);
1392 else {
1393 os_free(wpa_s->global->add_psk);
1394 wpa_s->global->add_psk = NULL;
1395 }
1396
1397 if (!client) {
1398 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL);
1399 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1400 }
1401 }
1402
1403
1404 struct send_action_work {
1405 unsigned int freq;
1406 u8 dst[ETH_ALEN];
1407 u8 src[ETH_ALEN];
1408 u8 bssid[ETH_ALEN];
1409 size_t len;
1410 unsigned int wait_time;
1411 u8 buf[0];
1412 };
1413
1414
wpas_p2p_free_send_action_work(struct wpa_supplicant * wpa_s)1415 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1416 {
1417 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1418
1419 wpa_printf(MSG_DEBUG,
1420 "P2P: Free Action frame radio work @%p (freq=%u dst="
1421 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1422 wpa_s->p2p_send_action_work, awork->freq,
1423 MAC2STR(awork->dst), MAC2STR(awork->src),
1424 MAC2STR(awork->bssid), awork->wait_time);
1425 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1426 awork->buf, awork->len);
1427 os_free(awork);
1428 wpa_s->p2p_send_action_work->ctx = NULL;
1429 radio_work_done(wpa_s->p2p_send_action_work);
1430 wpa_s->p2p_send_action_work = NULL;
1431 }
1432
1433
wpas_p2p_send_action_work_timeout(void * eloop_ctx,void * timeout_ctx)1434 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1435 void *timeout_ctx)
1436 {
1437 struct wpa_supplicant *wpa_s = eloop_ctx;
1438
1439 if (!wpa_s->p2p_send_action_work)
1440 return;
1441
1442 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1443 wpas_p2p_free_send_action_work(wpa_s);
1444 }
1445
1446
wpas_p2p_action_tx_clear(struct wpa_supplicant * wpa_s)1447 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1448 {
1449 if (wpa_s->p2p_send_action_work) {
1450 struct send_action_work *awork;
1451
1452 awork = wpa_s->p2p_send_action_work->ctx;
1453 wpa_printf(MSG_DEBUG,
1454 "P2P: Clear Action TX work @%p (wait_time=%u)",
1455 wpa_s->p2p_send_action_work, awork->wait_time);
1456 if (awork->wait_time == 0) {
1457 wpas_p2p_free_send_action_work(wpa_s);
1458 } else {
1459 /*
1460 * In theory, this should not be needed, but number of
1461 * places in the P2P code is still using non-zero wait
1462 * time for the last Action frame in the sequence and
1463 * some of these do not call send_action_done().
1464 */
1465 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1466 wpa_s, NULL);
1467 eloop_register_timeout(
1468 0, awork->wait_time * 1000,
1469 wpas_p2p_send_action_work_timeout,
1470 wpa_s, NULL);
1471 }
1472 }
1473 }
1474
1475
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)1476 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1477 unsigned int freq,
1478 const u8 *dst, const u8 *src,
1479 const u8 *bssid,
1480 const u8 *data, size_t data_len,
1481 enum offchannel_send_action_result
1482 result)
1483 {
1484 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1485
1486 wpas_p2p_action_tx_clear(wpa_s);
1487
1488 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1489 return;
1490
1491 switch (result) {
1492 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1493 res = P2P_SEND_ACTION_SUCCESS;
1494 break;
1495 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1496 res = P2P_SEND_ACTION_NO_ACK;
1497 break;
1498 case OFFCHANNEL_SEND_ACTION_FAILED:
1499 res = P2P_SEND_ACTION_FAILED;
1500 break;
1501 }
1502
1503 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1504
1505 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1506 wpa_s->pending_pd_before_join &&
1507 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1508 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1509 wpa_s->p2p_fallback_to_go_neg) {
1510 wpa_s->pending_pd_before_join = 0;
1511 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1512 "during p2p_connect-auto");
1513 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1514 P2P_EVENT_FALLBACK_TO_GO_NEG
1515 "reason=no-ACK-to-PD-Req");
1516 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1517 return;
1518 }
1519 }
1520
1521
wpas_send_action_cb(struct wpa_radio_work * work,int deinit)1522 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1523 {
1524 struct wpa_supplicant *wpa_s = work->wpa_s;
1525 struct send_action_work *awork = work->ctx;
1526
1527 if (deinit) {
1528 if (work->started) {
1529 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1530 wpa_s, NULL);
1531 wpa_s->p2p_send_action_work = NULL;
1532 offchannel_send_action_done(wpa_s);
1533 }
1534 os_free(awork);
1535 return;
1536 }
1537
1538 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1539 awork->bssid, awork->buf, awork->len,
1540 awork->wait_time,
1541 wpas_p2p_send_action_tx_status, 1) < 0) {
1542 os_free(awork);
1543 radio_work_done(work);
1544 return;
1545 }
1546 wpa_s->p2p_send_action_work = work;
1547 }
1548
1549
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)1550 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1551 unsigned int freq, const u8 *dst,
1552 const u8 *src, const u8 *bssid, const u8 *buf,
1553 size_t len, unsigned int wait_time)
1554 {
1555 struct send_action_work *awork;
1556
1557 if (wpa_s->p2p_send_action_work) {
1558 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1559 return -1;
1560 }
1561
1562 awork = os_zalloc(sizeof(*awork) + len);
1563 if (awork == NULL)
1564 return -1;
1565
1566 awork->freq = freq;
1567 os_memcpy(awork->dst, dst, ETH_ALEN);
1568 os_memcpy(awork->src, src, ETH_ALEN);
1569 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1570 awork->len = len;
1571 awork->wait_time = wait_time;
1572 os_memcpy(awork->buf, buf, len);
1573
1574 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1575 wpas_send_action_cb, awork) < 0) {
1576 os_free(awork);
1577 return -1;
1578 }
1579
1580 return 0;
1581 }
1582
1583
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)1584 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1585 const u8 *src, const u8 *bssid, const u8 *buf,
1586 size_t len, unsigned int wait_time)
1587 {
1588 struct wpa_supplicant *wpa_s = ctx;
1589 int listen_freq = -1, send_freq = -1;
1590
1591 if (wpa_s->p2p_listen_work)
1592 listen_freq = wpa_s->p2p_listen_work->freq;
1593 if (wpa_s->p2p_send_action_work)
1594 send_freq = wpa_s->p2p_send_action_work->freq;
1595 if (listen_freq != (int) freq && send_freq != (int) freq) {
1596 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1597 listen_freq, send_freq);
1598 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1599 len, wait_time);
1600 }
1601
1602 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1603 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1604 wait_time,
1605 wpas_p2p_send_action_tx_status, 1);
1606 }
1607
1608
wpas_send_action_done(void * ctx)1609 static void wpas_send_action_done(void *ctx)
1610 {
1611 struct wpa_supplicant *wpa_s = ctx;
1612
1613 if (wpa_s->p2p_send_action_work) {
1614 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1615 wpa_s, NULL);
1616 os_free(wpa_s->p2p_send_action_work->ctx);
1617 radio_work_done(wpa_s->p2p_send_action_work);
1618 wpa_s->p2p_send_action_work = NULL;
1619 }
1620
1621 offchannel_send_action_done(wpa_s);
1622 }
1623
1624
wpas_copy_go_neg_results(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params)1625 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1626 struct p2p_go_neg_results *params)
1627 {
1628 if (wpa_s->go_params == NULL) {
1629 wpa_s->go_params = os_malloc(sizeof(*params));
1630 if (wpa_s->go_params == NULL)
1631 return -1;
1632 }
1633 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1634 return 0;
1635 }
1636
1637
wpas_start_wps_enrollee(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * res)1638 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1639 struct p2p_go_neg_results *res)
1640 {
1641 wpa_s->group_formation_reported = 0;
1642 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1643 " dev_addr " MACSTR " wps_method %d",
1644 MAC2STR(res->peer_interface_addr),
1645 MAC2STR(res->peer_device_addr), res->wps_method);
1646 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1647 res->ssid, res->ssid_len);
1648 wpa_supplicant_ap_deinit(wpa_s);
1649 wpas_copy_go_neg_results(wpa_s, res);
1650 if (res->wps_method == WPS_PBC) {
1651 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1652 #ifdef CONFIG_WPS_NFC
1653 } else if (res->wps_method == WPS_NFC) {
1654 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1655 res->peer_interface_addr,
1656 wpa_s->p2pdev->p2p_oob_dev_pw,
1657 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1658 wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1659 DEV_PW_NFC_CONNECTION_HANDOVER ?
1660 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1661 NULL,
1662 NULL, 0, 0);
1663 #endif /* CONFIG_WPS_NFC */
1664 } else {
1665 u16 dev_pw_id = DEV_PW_DEFAULT;
1666 if (wpa_s->p2p_wps_method == WPS_P2PS)
1667 dev_pw_id = DEV_PW_P2PS_DEFAULT;
1668 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1669 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1670 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1671 wpa_s->p2p_pin, 1, dev_pw_id);
1672 }
1673 }
1674
1675
wpas_p2p_add_psk_list(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)1676 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1677 struct wpa_ssid *ssid)
1678 {
1679 struct wpa_ssid *persistent;
1680 struct psk_list_entry *psk;
1681 struct hostapd_data *hapd;
1682
1683 if (!wpa_s->ap_iface)
1684 return;
1685
1686 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1687 ssid->ssid_len);
1688 if (persistent == NULL)
1689 return;
1690
1691 hapd = wpa_s->ap_iface->bss[0];
1692
1693 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1694 list) {
1695 struct hostapd_wpa_psk *hpsk;
1696
1697 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1698 MACSTR " psk=%d",
1699 MAC2STR(psk->addr), psk->p2p);
1700 hpsk = os_zalloc(sizeof(*hpsk));
1701 if (hpsk == NULL)
1702 break;
1703 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1704 if (psk->p2p)
1705 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1706 else
1707 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1708 hpsk->next = hapd->conf->ssid.wpa_psk;
1709 hapd->conf->ssid.wpa_psk = hpsk;
1710 }
1711 }
1712
1713
p2p_go_dump_common_freqs(struct wpa_supplicant * wpa_s)1714 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1715 {
1716 unsigned int i;
1717
1718 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1719 wpa_s->p2p_group_common_freqs_num);
1720
1721 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1722 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1723 i, wpa_s->p2p_group_common_freqs[i]);
1724 }
1725
1726
p2p_go_save_group_common_freqs(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params)1727 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1728 struct p2p_go_neg_results *params)
1729 {
1730 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1731
1732 wpa_s->p2p_group_common_freqs_num = 0;
1733 os_free(wpa_s->p2p_group_common_freqs);
1734 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1735 if (!wpa_s->p2p_group_common_freqs)
1736 return;
1737
1738 for (i = 0; i < len; i++) {
1739 if (!wpa_s->go_params->freq_list[i])
1740 break;
1741 wpa_s->p2p_group_common_freqs[i] =
1742 wpa_s->go_params->freq_list[i];
1743 }
1744 wpa_s->p2p_group_common_freqs_num = i;
1745 }
1746
1747
p2p_config_write(struct wpa_supplicant * wpa_s)1748 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1749 {
1750 #ifndef CONFIG_NO_CONFIG_WRITE
1751 if (wpa_s->p2pdev->conf->update_config &&
1752 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1753 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1754 #endif /* CONFIG_NO_CONFIG_WRITE */
1755 }
1756
1757
p2p_go_configured(void * ctx,void * data)1758 static void p2p_go_configured(void *ctx, void *data)
1759 {
1760 struct wpa_supplicant *wpa_s = ctx;
1761 struct p2p_go_neg_results *params = data;
1762 struct wpa_ssid *ssid;
1763
1764 wpa_s->ap_configured_cb = NULL;
1765 wpa_s->ap_configured_cb_ctx = NULL;
1766 wpa_s->ap_configured_cb_data = NULL;
1767 if (!wpa_s->go_params) {
1768 wpa_printf(MSG_ERROR,
1769 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1770 return;
1771 }
1772
1773 p2p_go_save_group_common_freqs(wpa_s, params);
1774 p2p_go_dump_common_freqs(wpa_s);
1775
1776 ssid = wpa_s->current_ssid;
1777 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1778 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1779 if (wpa_s->global->p2p_group_formation == wpa_s)
1780 wpa_s->global->p2p_group_formation = NULL;
1781 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1782 params->passphrase[0] == '\0' ?
1783 params->psk : NULL,
1784 params->passphrase,
1785 wpa_s->global->p2p_dev_addr,
1786 params->persistent_group, "");
1787 wpa_s->group_formation_reported = 1;
1788
1789 if (wpa_s->p2pdev->p2ps_method_config_any) {
1790 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1791 wpa_dbg(wpa_s, MSG_DEBUG,
1792 "P2PS: Setting default PIN for ANY");
1793 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1794 "12345670", NULL, 0,
1795 0);
1796 } else {
1797 wpa_dbg(wpa_s, MSG_DEBUG,
1798 "P2PS: Setting default PIN for " MACSTR,
1799 MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1800 wpa_supplicant_ap_wps_pin(
1801 wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1802 "12345670", NULL, 0, 0);
1803 }
1804 wpa_s->p2pdev->p2ps_method_config_any = 0;
1805 }
1806
1807 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1808 if (params->persistent_group) {
1809 wpas_p2p_store_persistent_group(
1810 wpa_s->p2pdev, ssid,
1811 wpa_s->global->p2p_dev_addr);
1812 wpas_p2p_add_psk_list(wpa_s, ssid);
1813 }
1814
1815 wpas_notify_p2p_group_started(wpa_s, ssid,
1816 params->persistent_group, 0,
1817 NULL);
1818 wpas_p2p_cross_connect_setup(wpa_s);
1819 wpas_p2p_set_group_idle_timeout(wpa_s);
1820
1821 if (wpa_s->p2p_first_connection_timeout) {
1822 wpa_dbg(wpa_s, MSG_DEBUG,
1823 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1824 wpa_s->p2p_first_connection_timeout);
1825 wpa_s->p2p_go_group_formation_completed = 0;
1826 wpa_s->global->p2p_group_formation = wpa_s;
1827 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1828 wpa_s->p2pdev, NULL);
1829 eloop_register_timeout(
1830 wpa_s->p2p_first_connection_timeout, 0,
1831 wpas_p2p_group_formation_timeout,
1832 wpa_s->p2pdev, NULL);
1833 }
1834
1835 return;
1836 }
1837
1838 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1839 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1840 params->peer_interface_addr)) {
1841 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1842 "filtering");
1843 return;
1844 }
1845 if (params->wps_method == WPS_PBC) {
1846 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1847 params->peer_device_addr);
1848 #ifdef CONFIG_WPS_NFC
1849 } else if (params->wps_method == WPS_NFC) {
1850 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1851 DEV_PW_NFC_CONNECTION_HANDOVER &&
1852 !wpa_s->p2pdev->p2p_oob_dev_pw) {
1853 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1854 return;
1855 }
1856 wpas_ap_wps_add_nfc_pw(
1857 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1858 wpa_s->p2pdev->p2p_oob_dev_pw,
1859 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1860 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1861 #endif /* CONFIG_WPS_NFC */
1862 } else if (wpa_s->p2p_pin[0])
1863 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1864 wpa_s->p2p_pin, NULL, 0, 0);
1865 os_free(wpa_s->go_params);
1866 wpa_s->go_params = NULL;
1867 }
1868
1869
wpas_start_wps_go(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,int group_formation)1870 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1871 struct p2p_go_neg_results *params,
1872 int group_formation)
1873 {
1874 struct wpa_ssid *ssid;
1875
1876 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1877 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1878 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1879 "results");
1880 return;
1881 }
1882
1883 ssid = wpa_config_add_network(wpa_s->conf);
1884 if (ssid == NULL) {
1885 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1886 return;
1887 }
1888
1889 wpa_s->show_group_started = 0;
1890 wpa_s->p2p_go_group_formation_completed = 0;
1891 wpa_s->group_formation_reported = 0;
1892 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1893
1894 wpa_config_set_network_defaults(ssid);
1895 ssid->temporary = 1;
1896 ssid->p2p_group = 1;
1897 ssid->p2p_persistent_group = !!params->persistent_group;
1898 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1899 WPAS_MODE_P2P_GO;
1900 ssid->frequency = params->freq;
1901 ssid->ht40 = params->ht40;
1902 ssid->vht = params->vht;
1903 ssid->max_oper_chwidth = params->max_oper_chwidth;
1904 ssid->vht_center_freq2 = params->vht_center_freq2;
1905 ssid->ssid = os_zalloc(params->ssid_len + 1);
1906 if (ssid->ssid) {
1907 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1908 ssid->ssid_len = params->ssid_len;
1909 }
1910 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1911 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1912 ssid->proto = WPA_PROTO_RSN;
1913 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1914 ssid->group_cipher = WPA_CIPHER_CCMP;
1915 if (params->freq > 56160) {
1916 /*
1917 * Enable GCMP instead of CCMP as pairwise_cipher and
1918 * group_cipher in 60 GHz.
1919 */
1920 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1921 ssid->group_cipher = WPA_CIPHER_GCMP;
1922 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1923 ssid->pbss = 1;
1924 }
1925 if (os_strlen(params->passphrase) > 0) {
1926 ssid->passphrase = os_strdup(params->passphrase);
1927 if (ssid->passphrase == NULL) {
1928 wpa_msg_global(wpa_s, MSG_ERROR,
1929 "P2P: Failed to copy passphrase for GO");
1930 wpa_config_remove_network(wpa_s->conf, ssid->id);
1931 return;
1932 }
1933 } else
1934 ssid->passphrase = NULL;
1935 ssid->psk_set = params->psk_set;
1936 if (ssid->psk_set)
1937 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1938 else if (ssid->passphrase)
1939 wpa_config_update_psk(ssid);
1940 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1941
1942 wpa_s->ap_configured_cb = p2p_go_configured;
1943 wpa_s->ap_configured_cb_ctx = wpa_s;
1944 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1945 wpa_s->scan_req = NORMAL_SCAN_REQ;
1946 wpa_s->connect_without_scan = ssid;
1947 wpa_s->reassociate = 1;
1948 wpa_s->disconnected = 0;
1949 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1950 "start GO)");
1951 wpa_supplicant_req_scan(wpa_s, 0, 0);
1952 }
1953
1954
wpas_p2p_clone_config(struct wpa_supplicant * dst,const struct wpa_supplicant * src)1955 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1956 const struct wpa_supplicant *src)
1957 {
1958 struct wpa_config *d;
1959 const struct wpa_config *s;
1960
1961 d = dst->conf;
1962 s = src->conf;
1963
1964 #define C(n) \
1965 do { \
1966 if (s->n && !d->n) \
1967 d->n = os_strdup(s->n); \
1968 } while (0)
1969
1970 C(device_name);
1971 C(manufacturer);
1972 C(model_name);
1973 C(model_number);
1974 C(serial_number);
1975 C(config_methods);
1976 #undef C
1977
1978 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1979 os_memcpy(d->sec_device_type, s->sec_device_type,
1980 sizeof(d->sec_device_type));
1981 d->num_sec_device_types = s->num_sec_device_types;
1982
1983 d->p2p_group_idle = s->p2p_group_idle;
1984 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1985 d->p2p_intra_bss = s->p2p_intra_bss;
1986 d->persistent_reconnect = s->persistent_reconnect;
1987 d->max_num_sta = s->max_num_sta;
1988 d->pbc_in_m1 = s->pbc_in_m1;
1989 d->ignore_old_scan_res = s->ignore_old_scan_res;
1990 d->beacon_int = s->beacon_int;
1991 d->dtim_period = s->dtim_period;
1992 d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1993 d->disassoc_low_ack = s->disassoc_low_ack;
1994 d->disable_scan_offload = s->disable_scan_offload;
1995 d->passive_scan = s->passive_scan;
1996
1997 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
1998 !d->wps_nfc_pw_from_config) {
1999 wpabuf_free(d->wps_nfc_dh_privkey);
2000 wpabuf_free(d->wps_nfc_dh_pubkey);
2001 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2002 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2003 }
2004 d->p2p_cli_probe = s->p2p_cli_probe;
2005 d->go_interworking = s->go_interworking;
2006 d->go_access_network_type = s->go_access_network_type;
2007 d->go_internet = s->go_internet;
2008 d->go_venue_group = s->go_venue_group;
2009 d->go_venue_type = s->go_venue_type;
2010 }
2011
2012
wpas_p2p_get_group_ifname(struct wpa_supplicant * wpa_s,char * ifname,size_t len)2013 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2014 char *ifname, size_t len)
2015 {
2016 char *ifname_ptr = wpa_s->ifname;
2017
2018 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2019 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2020 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2021 }
2022
2023 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2024 if (os_strlen(ifname) >= IFNAMSIZ &&
2025 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2026 int res;
2027
2028 /* Try to avoid going over the IFNAMSIZ length limit */
2029 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2030 if (os_snprintf_error(len, res) && len)
2031 ifname[len - 1] = '\0';
2032 }
2033 }
2034
2035
wpas_p2p_add_group_interface(struct wpa_supplicant * wpa_s,enum wpa_driver_if_type type)2036 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2037 enum wpa_driver_if_type type)
2038 {
2039 char ifname[120], force_ifname[120];
2040
2041 if (wpa_s->pending_interface_name[0]) {
2042 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2043 "- skip creation of a new one");
2044 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2045 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2046 "unknown?! ifname='%s'",
2047 wpa_s->pending_interface_name);
2048 return -1;
2049 }
2050 return 0;
2051 }
2052
2053 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2054 force_ifname[0] = '\0';
2055
2056 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2057 ifname);
2058 wpa_s->p2p_group_idx++;
2059
2060 wpa_s->pending_interface_type = type;
2061 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2062 wpa_s->pending_interface_addr, NULL) < 0) {
2063 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2064 "interface");
2065 return -1;
2066 }
2067
2068 if (force_ifname[0]) {
2069 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2070 force_ifname);
2071 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2072 sizeof(wpa_s->pending_interface_name));
2073 } else
2074 os_strlcpy(wpa_s->pending_interface_name, ifname,
2075 sizeof(wpa_s->pending_interface_name));
2076 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2077 MACSTR, wpa_s->pending_interface_name,
2078 MAC2STR(wpa_s->pending_interface_addr));
2079
2080 return 0;
2081 }
2082
2083
wpas_p2p_remove_pending_group_interface(struct wpa_supplicant * wpa_s)2084 static void wpas_p2p_remove_pending_group_interface(
2085 struct wpa_supplicant *wpa_s)
2086 {
2087 if (!wpa_s->pending_interface_name[0] ||
2088 is_zero_ether_addr(wpa_s->pending_interface_addr))
2089 return; /* No pending virtual interface */
2090
2091 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2092 wpa_s->pending_interface_name);
2093 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2094 wpa_s->pending_interface_name);
2095 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2096 wpa_s->pending_interface_name[0] = '\0';
2097 wpa_s->global->pending_group_iface_for_p2ps = 0;
2098 }
2099
2100
2101 static struct wpa_supplicant *
wpas_p2p_init_group_interface(struct wpa_supplicant * wpa_s,int go)2102 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2103 {
2104 struct wpa_interface iface;
2105 struct wpa_supplicant *group_wpa_s;
2106
2107 if (!wpa_s->pending_interface_name[0]) {
2108 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2109 if (!wpas_p2p_create_iface(wpa_s))
2110 return NULL;
2111 /*
2112 * Something has forced us to remove the pending interface; try
2113 * to create a new one and hope for the best that we will get
2114 * the same local address.
2115 */
2116 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2117 WPA_IF_P2P_CLIENT) < 0)
2118 return NULL;
2119 }
2120
2121 os_memset(&iface, 0, sizeof(iface));
2122 iface.ifname = wpa_s->pending_interface_name;
2123 iface.driver = wpa_s->driver->name;
2124 if (wpa_s->conf->ctrl_interface == NULL &&
2125 wpa_s->parent != wpa_s &&
2126 wpa_s->p2p_mgmt &&
2127 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2128 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2129 else
2130 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2131 iface.driver_param = wpa_s->conf->driver_param;
2132 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2133 if (group_wpa_s == NULL) {
2134 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2135 "wpa_supplicant interface");
2136 return NULL;
2137 }
2138 wpa_s->pending_interface_name[0] = '\0';
2139 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2140 P2P_GROUP_INTERFACE_CLIENT;
2141 wpa_s->global->p2p_group_formation = group_wpa_s;
2142 wpa_s->global->pending_group_iface_for_p2ps = 0;
2143
2144 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2145
2146 return group_wpa_s;
2147 }
2148
2149
wpas_p2p_group_formation_timeout(void * eloop_ctx,void * timeout_ctx)2150 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2151 void *timeout_ctx)
2152 {
2153 struct wpa_supplicant *wpa_s = eloop_ctx;
2154 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2155 wpas_p2p_group_formation_failed(wpa_s, 0);
2156 }
2157
2158
wpas_p2p_group_formation_failed(struct wpa_supplicant * wpa_s,int already_deleted)2159 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2160 int already_deleted)
2161 {
2162 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2163 wpa_s->p2pdev, NULL);
2164 if (wpa_s->global->p2p)
2165 p2p_group_formation_failed(wpa_s->global->p2p);
2166 wpas_group_formation_completed(wpa_s, 0, already_deleted);
2167 }
2168
2169
wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant * wpa_s)2170 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2171 {
2172 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2173 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2174 wpa_s->p2pdev, NULL);
2175 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2176 wpa_s->p2pdev, NULL);
2177 wpa_s->global->p2p_fail_on_wps_complete = 0;
2178 }
2179
2180
wpas_p2p_ap_setup_failed(struct wpa_supplicant * wpa_s)2181 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2182 {
2183 if (wpa_s->global->p2p_group_formation != wpa_s)
2184 return;
2185 /* Speed up group formation timeout since this cannot succeed */
2186 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2187 wpa_s->p2pdev, NULL);
2188 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2189 wpa_s->p2pdev, NULL);
2190 }
2191
2192
wpas_go_neg_completed(void * ctx,struct p2p_go_neg_results * res)2193 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2194 {
2195 struct wpa_supplicant *wpa_s = ctx;
2196 struct wpa_supplicant *group_wpa_s;
2197
2198 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2199 wpa_drv_cancel_remain_on_channel(wpa_s);
2200 wpa_s->off_channel_freq = 0;
2201 wpa_s->roc_waiting_drv_freq = 0;
2202 }
2203
2204 if (res->status) {
2205 wpa_msg_global(wpa_s, MSG_INFO,
2206 P2P_EVENT_GO_NEG_FAILURE "status=%d",
2207 res->status);
2208 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2209 wpas_p2p_remove_pending_group_interface(wpa_s);
2210 return;
2211 }
2212
2213 if (!res->role_go) {
2214 /* Inform driver of the operating channel of GO. */
2215 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2216 }
2217
2218 if (wpa_s->p2p_go_ht40)
2219 res->ht40 = 1;
2220 if (wpa_s->p2p_go_vht)
2221 res->vht = 1;
2222 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2223 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2224
2225 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2226 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2227 " wps_method=%s",
2228 res->role_go ? "GO" : "client", res->freq, res->ht40,
2229 MAC2STR(res->peer_device_addr),
2230 MAC2STR(res->peer_interface_addr),
2231 p2p_wps_method_text(res->wps_method));
2232 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2233
2234 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2235 struct wpa_ssid *ssid;
2236 ssid = wpa_config_get_network(wpa_s->conf,
2237 wpa_s->p2p_persistent_id);
2238 if (ssid && ssid->disabled == 2 &&
2239 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2240 size_t len = os_strlen(ssid->passphrase);
2241 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2242 "on requested persistent group");
2243 os_memcpy(res->passphrase, ssid->passphrase, len);
2244 res->passphrase[len] = '\0';
2245 }
2246 }
2247
2248 if (wpa_s->create_p2p_iface) {
2249 group_wpa_s =
2250 wpas_p2p_init_group_interface(wpa_s, res->role_go);
2251 if (group_wpa_s == NULL) {
2252 wpas_p2p_remove_pending_group_interface(wpa_s);
2253 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2254 wpa_s, NULL);
2255 wpas_p2p_group_formation_failed(wpa_s, 1);
2256 return;
2257 }
2258 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2259 wpa_s->pending_interface_name[0] = '\0';
2260 } else {
2261 group_wpa_s = wpa_s->parent;
2262 wpa_s->global->p2p_group_formation = group_wpa_s;
2263 if (group_wpa_s != wpa_s)
2264 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2265 }
2266
2267 group_wpa_s->p2p_in_provisioning = 1;
2268 group_wpa_s->p2pdev = wpa_s;
2269 if (group_wpa_s != wpa_s) {
2270 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2271 sizeof(group_wpa_s->p2p_pin));
2272 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2273 }
2274 if (res->role_go) {
2275 wpas_start_wps_go(group_wpa_s, res, 1);
2276 } else {
2277 os_get_reltime(&group_wpa_s->scan_min_time);
2278 wpas_start_wps_enrollee(group_wpa_s, res);
2279 }
2280
2281 wpa_s->p2p_long_listen = 0;
2282 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2283
2284 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2285 eloop_register_timeout(15 + res->peer_config_timeout / 100,
2286 (res->peer_config_timeout % 100) * 10000,
2287 wpas_p2p_group_formation_timeout, wpa_s, NULL);
2288 }
2289
2290
wpas_go_neg_req_rx(void * ctx,const u8 * src,u16 dev_passwd_id,u8 go_intent)2291 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2292 u8 go_intent)
2293 {
2294 struct wpa_supplicant *wpa_s = ctx;
2295 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2296 " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2297 dev_passwd_id, go_intent);
2298
2299 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2300 }
2301
2302
wpas_dev_found(void * ctx,const u8 * addr,const struct p2p_peer_info * info,int new_device)2303 static void wpas_dev_found(void *ctx, const u8 *addr,
2304 const struct p2p_peer_info *info,
2305 int new_device)
2306 {
2307 u8 *wfd_dev_info = NULL;
2308 u8 wfd_dev_info_len = 0;
2309 #ifndef CONFIG_NO_STDOUT_DEBUG
2310 struct wpa_supplicant *wpa_s = ctx;
2311 char devtype[WPS_DEV_TYPE_BUFSIZE];
2312 char *wfd_dev_info_hex = NULL;
2313
2314 #ifdef CONFIG_WIFI_DISPLAY
2315 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2316 WFD_SUBELEM_DEVICE_INFO);
2317 if (wfd_dev_info_hex) {
2318 wfd_dev_info_len = strlen(wfd_dev_info_hex) / 2;
2319 wfd_dev_info = os_zalloc(wfd_dev_info_len);
2320 // Only used for notification, so not handling error.
2321 hexstr2bin(wfd_dev_info_hex, wfd_dev_info, wfd_dev_info_len);
2322 }
2323 #endif /* CONFIG_WIFI_DISPLAY */
2324
2325 if (info->p2ps_instance) {
2326 char str[256];
2327 const u8 *buf = wpabuf_head(info->p2ps_instance);
2328 size_t len = wpabuf_len(info->p2ps_instance);
2329
2330 while (len) {
2331 u32 id;
2332 u16 methods;
2333 u8 str_len;
2334
2335 if (len < 4 + 2 + 1)
2336 break;
2337 id = WPA_GET_LE32(buf);
2338 buf += sizeof(u32);
2339 methods = WPA_GET_BE16(buf);
2340 buf += sizeof(u16);
2341 str_len = *buf++;
2342 if (str_len > len - 4 - 2 - 1)
2343 break;
2344 os_memcpy(str, buf, str_len);
2345 str[str_len] = '\0';
2346 buf += str_len;
2347 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2348
2349 wpa_msg_global(wpa_s, MSG_INFO,
2350 P2P_EVENT_DEVICE_FOUND MACSTR
2351 " p2p_dev_addr=" MACSTR
2352 " pri_dev_type=%s name='%s'"
2353 " config_methods=0x%x"
2354 " dev_capab=0x%x"
2355 " group_capab=0x%x"
2356 " adv_id=%x asp_svc=%s%s",
2357 MAC2STR(addr),
2358 MAC2STR(info->p2p_device_addr),
2359 wps_dev_type_bin2str(
2360 info->pri_dev_type,
2361 devtype, sizeof(devtype)),
2362 info->device_name, methods,
2363 info->dev_capab, info->group_capab,
2364 id, str,
2365 info->vendor_elems ?
2366 " vendor_elems=1" : "");
2367 }
2368 goto done;
2369 }
2370
2371 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2372 " p2p_dev_addr=" MACSTR
2373 " pri_dev_type=%s name='%s' config_methods=0x%x "
2374 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2375 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2376 wps_dev_type_bin2str(info->pri_dev_type, devtype,
2377 sizeof(devtype)),
2378 info->device_name, info->config_methods,
2379 info->dev_capab, info->group_capab,
2380 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2381 wfd_dev_info_hex ? wfd_dev_info_hex : "",
2382 info->vendor_elems ? " vendor_elems=1" : "",
2383 new_device);
2384
2385 done:
2386 os_free(wfd_dev_info_hex);
2387 #endif /* CONFIG_NO_STDOUT_DEBUG */
2388
2389 wpas_notify_p2p_device_found(ctx, addr, info, wfd_dev_info,
2390 wfd_dev_info_len, new_device);
2391 os_free(wfd_dev_info);
2392 }
2393
2394
wpas_dev_lost(void * ctx,const u8 * dev_addr)2395 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2396 {
2397 struct wpa_supplicant *wpa_s = ctx;
2398
2399 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2400 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2401
2402 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2403 }
2404
2405
wpas_find_stopped(void * ctx)2406 static void wpas_find_stopped(void *ctx)
2407 {
2408 struct wpa_supplicant *wpa_s = ctx;
2409
2410 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2411 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2412
2413 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2414 wpas_notify_p2p_find_stopped(wpa_s);
2415 }
2416
2417
2418 struct wpas_p2p_listen_work {
2419 unsigned int freq;
2420 unsigned int duration;
2421 struct wpabuf *probe_resp_ie;
2422 };
2423
2424
wpas_p2p_listen_work_free(struct wpas_p2p_listen_work * lwork)2425 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2426 {
2427 if (lwork == NULL)
2428 return;
2429 wpabuf_free(lwork->probe_resp_ie);
2430 os_free(lwork);
2431 }
2432
2433
wpas_p2p_listen_work_done(struct wpa_supplicant * wpa_s)2434 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2435 {
2436 struct wpas_p2p_listen_work *lwork;
2437
2438 if (!wpa_s->p2p_listen_work)
2439 return;
2440
2441 lwork = wpa_s->p2p_listen_work->ctx;
2442 wpas_p2p_listen_work_free(lwork);
2443 radio_work_done(wpa_s->p2p_listen_work);
2444 wpa_s->p2p_listen_work = NULL;
2445 }
2446
2447
wpas_start_listen_cb(struct wpa_radio_work * work,int deinit)2448 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2449 {
2450 struct wpa_supplicant *wpa_s = work->wpa_s;
2451 struct wpas_p2p_listen_work *lwork = work->ctx;
2452 unsigned int duration;
2453
2454 if (deinit) {
2455 if (work->started) {
2456 wpa_s->p2p_listen_work = NULL;
2457 wpas_stop_listen(wpa_s);
2458 }
2459 wpas_p2p_listen_work_free(lwork);
2460 return;
2461 }
2462
2463 wpa_s->p2p_listen_work = work;
2464
2465 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2466
2467 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2468 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2469 "report received Probe Request frames");
2470 wpas_p2p_listen_work_done(wpa_s);
2471 return;
2472 }
2473
2474 wpa_s->pending_listen_freq = lwork->freq;
2475 wpa_s->pending_listen_duration = lwork->duration;
2476
2477 duration = lwork->duration;
2478 #ifdef CONFIG_TESTING_OPTIONS
2479 if (wpa_s->extra_roc_dur) {
2480 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2481 duration, duration + wpa_s->extra_roc_dur);
2482 duration += wpa_s->extra_roc_dur;
2483 }
2484 #endif /* CONFIG_TESTING_OPTIONS */
2485
2486 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2487 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2488 "to remain on channel (%u MHz) for Listen "
2489 "state", lwork->freq);
2490 wpas_p2p_listen_work_done(wpa_s);
2491 wpa_s->pending_listen_freq = 0;
2492 return;
2493 }
2494 wpa_s->off_channel_freq = 0;
2495 wpa_s->roc_waiting_drv_freq = lwork->freq;
2496 }
2497
2498
wpas_start_listen(void * ctx,unsigned int freq,unsigned int duration,const struct wpabuf * probe_resp_ie)2499 static int wpas_start_listen(void *ctx, unsigned int freq,
2500 unsigned int duration,
2501 const struct wpabuf *probe_resp_ie)
2502 {
2503 struct wpa_supplicant *wpa_s = ctx;
2504 struct wpas_p2p_listen_work *lwork;
2505
2506 if (wpa_s->p2p_listen_work) {
2507 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2508 return -1;
2509 }
2510
2511 lwork = os_zalloc(sizeof(*lwork));
2512 if (lwork == NULL)
2513 return -1;
2514 lwork->freq = freq;
2515 lwork->duration = duration;
2516 if (probe_resp_ie) {
2517 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2518 if (lwork->probe_resp_ie == NULL) {
2519 wpas_p2p_listen_work_free(lwork);
2520 return -1;
2521 }
2522 }
2523
2524 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2525 lwork) < 0) {
2526 wpas_p2p_listen_work_free(lwork);
2527 return -1;
2528 }
2529
2530 return 0;
2531 }
2532
2533
wpas_stop_listen(void * ctx)2534 static void wpas_stop_listen(void *ctx)
2535 {
2536 struct wpa_supplicant *wpa_s = ctx;
2537 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2538 wpa_drv_cancel_remain_on_channel(wpa_s);
2539 wpa_s->off_channel_freq = 0;
2540 wpa_s->roc_waiting_drv_freq = 0;
2541 }
2542 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2543
2544 /*
2545 * Don't cancel Probe Request RX reporting for a connected P2P Client
2546 * handling Probe Request frames.
2547 */
2548 if (!wpa_s->p2p_cli_probe)
2549 wpa_drv_probe_req_report(wpa_s, 0);
2550
2551 wpas_p2p_listen_work_done(wpa_s);
2552 }
2553
2554
wpas_send_probe_resp(void * ctx,const struct wpabuf * buf,unsigned int freq)2555 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2556 unsigned int freq)
2557 {
2558 struct wpa_supplicant *wpa_s = ctx;
2559 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2560 freq);
2561 }
2562
2563
wpas_prov_disc_local_display(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params,unsigned int generated_pin)2564 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2565 const u8 *peer, const char *params,
2566 unsigned int generated_pin)
2567 {
2568 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2569 " %08d%s", MAC2STR(peer), generated_pin, params);
2570 }
2571
2572
wpas_prov_disc_local_keypad(struct wpa_supplicant * wpa_s,const u8 * peer,const char * params)2573 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2574 const u8 *peer, const char *params)
2575 {
2576 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2577 "%s", MAC2STR(peer), params);
2578 }
2579
2580
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)2581 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2582 const u8 *dev_addr, const u8 *pri_dev_type,
2583 const char *dev_name, u16 supp_config_methods,
2584 u8 dev_capab, u8 group_capab, const u8 *group_id,
2585 size_t group_id_len)
2586 {
2587 struct wpa_supplicant *wpa_s = ctx;
2588 char devtype[WPS_DEV_TYPE_BUFSIZE];
2589 char params[300];
2590 u8 empty_dev_type[8];
2591 unsigned int generated_pin = 0;
2592 struct wpa_supplicant *group = NULL;
2593 int res;
2594
2595 if (group_id) {
2596 for (group = wpa_s->global->ifaces; group; group = group->next)
2597 {
2598 struct wpa_ssid *s = group->current_ssid;
2599 if (s != NULL &&
2600 s->mode == WPAS_MODE_P2P_GO &&
2601 group_id_len - ETH_ALEN == s->ssid_len &&
2602 os_memcmp(group_id + ETH_ALEN, s->ssid,
2603 s->ssid_len) == 0)
2604 break;
2605 }
2606 }
2607
2608 if (pri_dev_type == NULL) {
2609 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2610 pri_dev_type = empty_dev_type;
2611 }
2612 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2613 " pri_dev_type=%s name='%s' config_methods=0x%x "
2614 "dev_capab=0x%x group_capab=0x%x%s%s",
2615 MAC2STR(dev_addr),
2616 wps_dev_type_bin2str(pri_dev_type, devtype,
2617 sizeof(devtype)),
2618 dev_name, supp_config_methods, dev_capab, group_capab,
2619 group ? " group=" : "",
2620 group ? group->ifname : "");
2621 if (os_snprintf_error(sizeof(params), res))
2622 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2623 params[sizeof(params) - 1] = '\0';
2624
2625 if (config_methods & WPS_CONFIG_DISPLAY) {
2626 if (wps_generate_pin(&generated_pin) < 0) {
2627 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2628 wpas_notify_p2p_provision_discovery(
2629 wpa_s, peer, 0 /* response */,
2630 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2631 return;
2632 }
2633 wpas_prov_disc_local_display(wpa_s, peer, params,
2634 generated_pin);
2635 } else if (config_methods & WPS_CONFIG_KEYPAD)
2636 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2637 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2638 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2639 MACSTR "%s", MAC2STR(peer), params);
2640
2641 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2642 P2P_PROV_DISC_SUCCESS,
2643 config_methods, generated_pin);
2644 }
2645
2646
wpas_prov_disc_resp(void * ctx,const u8 * peer,u16 config_methods)2647 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2648 {
2649 struct wpa_supplicant *wpa_s = ctx;
2650 unsigned int generated_pin = 0;
2651 char params[20];
2652
2653 if (wpa_s->pending_pd_before_join &&
2654 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2655 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2656 wpa_s->pending_pd_before_join = 0;
2657 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2658 "join-existing-group operation");
2659 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2660 return;
2661 }
2662
2663 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2664 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2665 int res;
2666
2667 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2668 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2669 if (os_snprintf_error(sizeof(params), res))
2670 params[sizeof(params) - 1] = '\0';
2671 } else
2672 params[0] = '\0';
2673
2674 if (config_methods & WPS_CONFIG_DISPLAY)
2675 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2676 else if (config_methods & WPS_CONFIG_KEYPAD) {
2677 if (wps_generate_pin(&generated_pin) < 0) {
2678 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2679 wpas_notify_p2p_provision_discovery(
2680 wpa_s, peer, 0 /* response */,
2681 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2682 return;
2683 }
2684 wpas_prov_disc_local_display(wpa_s, peer, params,
2685 generated_pin);
2686 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2687 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2688 MACSTR "%s", MAC2STR(peer), params);
2689
2690 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2691 P2P_PROV_DISC_SUCCESS,
2692 config_methods, generated_pin);
2693 }
2694
2695
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)2696 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2697 enum p2p_prov_disc_status status,
2698 u32 adv_id, const u8 *adv_mac,
2699 const char *deferred_session_resp)
2700 {
2701 struct wpa_supplicant *wpa_s = ctx;
2702
2703 if (wpa_s->p2p_fallback_to_go_neg) {
2704 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2705 "failed - fall back to GO Negotiation");
2706 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2707 P2P_EVENT_FALLBACK_TO_GO_NEG
2708 "reason=PD-failed");
2709 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2710 return;
2711 }
2712
2713 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2714 wpa_s->pending_pd_before_join = 0;
2715 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2716 "join-existing-group operation (no ACK for PD "
2717 "Req attempts)");
2718 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2719 return;
2720 }
2721
2722 if (adv_id && adv_mac && deferred_session_resp) {
2723 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2724 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2725 " deferred_session_resp='%s'",
2726 MAC2STR(peer), status, adv_id,
2727 deferred_session_resp);
2728 } else if (adv_id && adv_mac) {
2729 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2730 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2731 MAC2STR(peer), status, adv_id);
2732 } else {
2733 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2734 " p2p_dev_addr=" MACSTR " status=%d",
2735 MAC2STR(peer), status);
2736 }
2737
2738 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2739 status, 0, 0);
2740 }
2741
2742
freq_included(struct wpa_supplicant * wpa_s,const struct p2p_channels * channels,unsigned int freq)2743 static int freq_included(struct wpa_supplicant *wpa_s,
2744 const struct p2p_channels *channels,
2745 unsigned int freq)
2746 {
2747 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2748 wpas_p2p_go_is_peer_freq(wpa_s, freq))
2749 return 1;
2750 return 0;
2751 }
2752
2753
wpas_p2p_go_update_common_freqs(struct wpa_supplicant * wpa_s)2754 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2755 {
2756 unsigned int num = P2P_MAX_CHANNELS;
2757 int *common_freqs;
2758 int ret;
2759
2760 p2p_go_dump_common_freqs(wpa_s);
2761 common_freqs = os_calloc(num, sizeof(int));
2762 if (!common_freqs)
2763 return;
2764
2765 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2766 if (ret < 0) {
2767 wpa_dbg(wpa_s, MSG_DEBUG,
2768 "P2P: Failed to get group common freqs");
2769 os_free(common_freqs);
2770 return;
2771 }
2772
2773 os_free(wpa_s->p2p_group_common_freqs);
2774 wpa_s->p2p_group_common_freqs = common_freqs;
2775 wpa_s->p2p_group_common_freqs_num = num;
2776 p2p_go_dump_common_freqs(wpa_s);
2777 }
2778
2779
2780 /*
2781 * Check if the given frequency is one of the possible operating frequencies
2782 * set after the completion of the GO Negotiation.
2783 */
wpas_p2p_go_is_peer_freq(struct wpa_supplicant * wpa_s,int freq)2784 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2785 {
2786 unsigned int i;
2787
2788 p2p_go_dump_common_freqs(wpa_s);
2789
2790 /* assume no restrictions */
2791 if (!wpa_s->p2p_group_common_freqs_num)
2792 return 1;
2793
2794 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2795 if (wpa_s->p2p_group_common_freqs[i] == freq)
2796 return 1;
2797 }
2798 return 0;
2799 }
2800
2801
wpas_sta_check_ecsa(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2802 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2803 struct sta_info *sta, void *ctx)
2804 {
2805 int *ecsa_support = ctx;
2806
2807 *ecsa_support &= sta->ecsa_supported;
2808
2809 return 0;
2810 }
2811
2812
2813 /* Check if all the peers support eCSA */
wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant * wpa_s)2814 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2815 {
2816 int ecsa_support = 1;
2817
2818 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2819 &ecsa_support);
2820
2821 return ecsa_support;
2822 }
2823
2824
2825 /**
2826 * Pick the best frequency to use from all the currently used frequencies.
2827 */
wpas_p2p_pick_best_used_freq(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)2828 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2829 struct wpa_used_freq_data *freqs,
2830 unsigned int num)
2831 {
2832 unsigned int i, c;
2833
2834 /* find a candidate freq that is supported by P2P */
2835 for (c = 0; c < num; c++)
2836 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2837 break;
2838
2839 if (c == num)
2840 return 0;
2841
2842 /* once we have a candidate, try to find a 'better' one */
2843 for (i = c + 1; i < num; i++) {
2844 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2845 continue;
2846
2847 /*
2848 * 1. Infrastructure station interfaces have higher preference.
2849 * 2. P2P Clients have higher preference.
2850 * 3. All others.
2851 */
2852 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2853 c = i;
2854 break;
2855 }
2856
2857 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2858 c = i;
2859 }
2860 return freqs[c].freq;
2861 }
2862
2863
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)2864 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2865 const u8 *go_dev_addr, const u8 *ssid,
2866 size_t ssid_len, int *go, u8 *group_bssid,
2867 int *force_freq, int persistent_group,
2868 const struct p2p_channels *channels,
2869 int dev_pw_id)
2870 {
2871 struct wpa_supplicant *wpa_s = ctx;
2872 struct wpa_ssid *s;
2873 struct wpa_used_freq_data *freqs;
2874 struct wpa_supplicant *grp;
2875 int best_freq;
2876
2877 if (!persistent_group) {
2878 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2879 " to join an active group (SSID: %s)",
2880 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2881 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2882 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2883 == 0 ||
2884 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2885 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2886 "authorized invitation");
2887 goto accept_inv;
2888 }
2889
2890 #ifdef CONFIG_WPS_NFC
2891 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2892 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2893 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2894 wpa_s->p2p_wps_method = WPS_NFC;
2895 wpa_s->pending_join_wps_method = WPS_NFC;
2896 os_memcpy(wpa_s->pending_join_dev_addr,
2897 go_dev_addr, ETH_ALEN);
2898 os_memcpy(wpa_s->pending_join_iface_addr,
2899 bssid, ETH_ALEN);
2900 goto accept_inv;
2901 }
2902 #endif /* CONFIG_WPS_NFC */
2903
2904 /*
2905 * Do not accept the invitation automatically; notify user and
2906 * request approval.
2907 */
2908 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2909 }
2910
2911 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2912 if (grp) {
2913 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2914 "running persistent group");
2915 if (*go)
2916 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2917 goto accept_inv;
2918 }
2919
2920 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2921 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2922 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2923 "invitation to re-invoke a persistent group");
2924 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2925 } else if (!wpa_s->conf->persistent_reconnect)
2926 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2927
2928 for (s = wpa_s->conf->ssid; s; s = s->next) {
2929 if (s->disabled == 2 &&
2930 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2931 s->ssid_len == ssid_len &&
2932 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2933 break;
2934 }
2935
2936 if (!s) {
2937 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2938 " requested reinvocation of an unknown group",
2939 MAC2STR(sa));
2940 return P2P_SC_FAIL_UNKNOWN_GROUP;
2941 }
2942
2943 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2944 *go = 1;
2945 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2946 wpa_printf(MSG_DEBUG, "P2P: The only available "
2947 "interface is already in use - reject "
2948 "invitation");
2949 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2950 }
2951 if (wpa_s->p2p_mgmt)
2952 os_memcpy(group_bssid, wpa_s->parent->own_addr,
2953 ETH_ALEN);
2954 else
2955 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2956 } else if (s->mode == WPAS_MODE_P2P_GO) {
2957 *go = 1;
2958 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2959 {
2960 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2961 "interface address for the group");
2962 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2963 }
2964 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2965 ETH_ALEN);
2966 }
2967
2968 accept_inv:
2969 wpas_p2p_set_own_freq_preference(wpa_s, 0);
2970
2971 best_freq = 0;
2972 freqs = os_calloc(wpa_s->num_multichan_concurrent,
2973 sizeof(struct wpa_used_freq_data));
2974 if (freqs) {
2975 int num_channels = wpa_s->num_multichan_concurrent;
2976 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2977 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2978 os_free(freqs);
2979 }
2980
2981 /* Get one of the frequencies currently in use */
2982 if (best_freq > 0) {
2983 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2984 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2985
2986 if (wpa_s->num_multichan_concurrent < 2 ||
2987 wpas_p2p_num_unused_channels(wpa_s) < 1) {
2988 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2989 *force_freq = best_freq;
2990 }
2991 }
2992
2993 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2994 wpas_p2p_num_unused_channels(wpa_s) > 0) {
2995 if (*go == 0) {
2996 /* We are the client */
2997 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2998 "running a GO but we are capable of MCC, "
2999 "figure out the best channel to use");
3000 *force_freq = 0;
3001 } else if (!freq_included(wpa_s, channels, *force_freq)) {
3002 /* We are the GO, and *force_freq is not in the
3003 * intersection */
3004 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3005 "in intersection but we are capable of MCC, "
3006 "figure out the best channel to use",
3007 *force_freq);
3008 *force_freq = 0;
3009 }
3010 }
3011
3012 return P2P_SC_SUCCESS;
3013 }
3014
3015
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)3016 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3017 const u8 *ssid, size_t ssid_len,
3018 const u8 *go_dev_addr, u8 status,
3019 int op_freq)
3020 {
3021 struct wpa_supplicant *wpa_s = ctx;
3022 struct wpa_ssid *s;
3023
3024 for (s = wpa_s->conf->ssid; s; s = s->next) {
3025 if (s->disabled == 2 &&
3026 s->ssid_len == ssid_len &&
3027 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3028 break;
3029 }
3030
3031 if (status == P2P_SC_SUCCESS) {
3032 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3033 " was accepted; op_freq=%d MHz, SSID=%s",
3034 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3035 if (s) {
3036 int go = s->mode == WPAS_MODE_P2P_GO;
3037 if (go) {
3038 wpa_msg_global(wpa_s, MSG_INFO,
3039 P2P_EVENT_INVITATION_ACCEPTED
3040 "sa=" MACSTR
3041 " persistent=%d freq=%d",
3042 MAC2STR(sa), s->id, op_freq);
3043 } else {
3044 wpa_msg_global(wpa_s, MSG_INFO,
3045 P2P_EVENT_INVITATION_ACCEPTED
3046 "sa=" MACSTR
3047 " persistent=%d",
3048 MAC2STR(sa), s->id);
3049 }
3050 wpas_p2p_group_add_persistent(
3051 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3052 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3053 1);
3054 } else if (bssid) {
3055 wpa_s->user_initiated_pd = 0;
3056 wpa_msg_global(wpa_s, MSG_INFO,
3057 P2P_EVENT_INVITATION_ACCEPTED
3058 "sa=" MACSTR " go_dev_addr=" MACSTR
3059 " bssid=" MACSTR " unknown-network",
3060 MAC2STR(sa), MAC2STR(go_dev_addr),
3061 MAC2STR(bssid));
3062 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3063 wpa_s->p2p_wps_method, 0, op_freq,
3064 ssid, ssid_len);
3065 }
3066 return;
3067 }
3068
3069 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3070 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3071 " was rejected (status %u)", MAC2STR(sa), status);
3072 return;
3073 }
3074
3075 if (!s) {
3076 if (bssid) {
3077 wpa_msg_global(wpa_s, MSG_INFO,
3078 P2P_EVENT_INVITATION_RECEIVED
3079 "sa=" MACSTR " go_dev_addr=" MACSTR
3080 " bssid=" MACSTR " unknown-network",
3081 MAC2STR(sa), MAC2STR(go_dev_addr),
3082 MAC2STR(bssid));
3083 } else {
3084 wpa_msg_global(wpa_s, MSG_INFO,
3085 P2P_EVENT_INVITATION_RECEIVED
3086 "sa=" MACSTR " go_dev_addr=" MACSTR
3087 " unknown-network",
3088 MAC2STR(sa), MAC2STR(go_dev_addr));
3089 }
3090 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3091 bssid, 0, op_freq);
3092 return;
3093 }
3094
3095 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3096 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3097 "sa=" MACSTR " persistent=%d freq=%d",
3098 MAC2STR(sa), s->id, op_freq);
3099 } else {
3100 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3101 "sa=" MACSTR " persistent=%d",
3102 MAC2STR(sa), s->id);
3103 }
3104 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3105 s->id, op_freq);
3106 }
3107
3108
wpas_remove_persistent_peer(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const u8 * peer,int inv)3109 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3110 struct wpa_ssid *ssid,
3111 const u8 *peer, int inv)
3112 {
3113 size_t i;
3114 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3115
3116 if (ssid == NULL)
3117 return;
3118
3119 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3120 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3121 ETH_ALEN) == 0)
3122 break;
3123 }
3124 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3125 if (ssid->mode != WPAS_MODE_P2P_GO &&
3126 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3127 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3128 "due to invitation result", ssid->id);
3129 wpas_notify_network_removed(wpa_s, ssid);
3130 wpa_config_remove_network(wpa_s->conf, ssid->id);
3131 return;
3132 }
3133 return; /* Peer not found in client list */
3134 }
3135
3136 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3137 "group %d client list%s",
3138 MAC2STR(peer), ssid->id,
3139 inv ? " due to invitation result" : "");
3140 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3141 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3142 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3143 ssid->num_p2p_clients--;
3144 if (p2p_wpa_s->conf->update_config &&
3145 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3146 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3147 }
3148
3149
wpas_remove_persistent_client(struct wpa_supplicant * wpa_s,const u8 * peer)3150 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3151 const u8 *peer)
3152 {
3153 struct wpa_ssid *ssid;
3154
3155 wpa_s = wpa_s->global->p2p_invite_group;
3156 if (wpa_s == NULL)
3157 return; /* No known invitation group */
3158 ssid = wpa_s->current_ssid;
3159 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3160 !ssid->p2p_persistent_group)
3161 return; /* Not operating as a GO in persistent group */
3162 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3163 ssid->ssid, ssid->ssid_len);
3164 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3165 }
3166
3167
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)3168 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3169 const struct p2p_channels *channels,
3170 const u8 *peer, int neg_freq,
3171 int peer_oper_freq)
3172 {
3173 struct wpa_supplicant *wpa_s = ctx;
3174 struct wpa_ssid *ssid;
3175 int freq;
3176
3177 if (bssid) {
3178 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3179 "status=%d " MACSTR,
3180 status, MAC2STR(bssid));
3181 } else {
3182 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3183 "status=%d ", status);
3184 }
3185 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3186
3187 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3188 status, MAC2STR(peer));
3189 if (wpa_s->pending_invite_ssid_id == -1) {
3190 struct wpa_supplicant *group_if =
3191 wpa_s->global->p2p_invite_group;
3192
3193 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3194 wpas_remove_persistent_client(wpa_s, peer);
3195
3196 /*
3197 * Invitation to an active group. If this is successful and we
3198 * are the GO, set the client wait to postpone some concurrent
3199 * operations and to allow provisioning and connection to happen
3200 * more quickly.
3201 */
3202 if (status == P2P_SC_SUCCESS &&
3203 group_if && group_if->current_ssid &&
3204 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3205 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3206 #ifdef CONFIG_TESTING_OPTIONS
3207 if (group_if->p2p_go_csa_on_inv) {
3208 wpa_printf(MSG_DEBUG,
3209 "Testing: force P2P GO CSA after invitation");
3210 eloop_cancel_timeout(
3211 wpas_p2p_reconsider_moving_go,
3212 wpa_s, NULL);
3213 eloop_register_timeout(
3214 0, 50000,
3215 wpas_p2p_reconsider_moving_go,
3216 wpa_s, NULL);
3217 }
3218 #endif /* CONFIG_TESTING_OPTIONS */
3219 }
3220 return;
3221 }
3222
3223 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3224 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3225 "invitation exchange to indicate readiness for "
3226 "re-invocation");
3227 }
3228
3229 if (status != P2P_SC_SUCCESS) {
3230 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3231 ssid = wpa_config_get_network(
3232 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3233 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3234 }
3235 wpas_p2p_remove_pending_group_interface(wpa_s);
3236 return;
3237 }
3238
3239 ssid = wpa_config_get_network(wpa_s->conf,
3240 wpa_s->pending_invite_ssid_id);
3241 if (ssid == NULL) {
3242 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3243 "data matching with invitation");
3244 return;
3245 }
3246
3247 /*
3248 * The peer could have missed our ctrl::ack frame for Invitation
3249 * Response and continue retransmitting the frame. To reduce the
3250 * likelihood of the peer not getting successful TX status for the
3251 * Invitation Response frame, wait a short time here before starting
3252 * the persistent group so that we will remain on the current channel to
3253 * acknowledge any possible retransmission from the peer.
3254 */
3255 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3256 "starting persistent group");
3257 os_sleep(0, 50000);
3258
3259 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3260 freq_included(wpa_s, channels, neg_freq))
3261 freq = neg_freq;
3262 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3263 freq_included(wpa_s, channels, peer_oper_freq))
3264 freq = peer_oper_freq;
3265 else
3266 freq = 0;
3267
3268 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3269 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3270 wpas_p2p_group_add_persistent(wpa_s, ssid,
3271 ssid->mode == WPAS_MODE_P2P_GO,
3272 wpa_s->p2p_persistent_go_freq,
3273 freq,
3274 wpa_s->p2p_go_vht_center_freq2,
3275 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3276 wpa_s->p2p_go_max_oper_chwidth,
3277 channels,
3278 ssid->mode == WPAS_MODE_P2P_GO ?
3279 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3280 0, 1);
3281 }
3282
3283
wpas_p2p_disallowed_freq(struct wpa_global * global,unsigned int freq)3284 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3285 unsigned int freq)
3286 {
3287 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3288 return 1;
3289 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3290 }
3291
3292
wpas_p2p_add_chan(struct p2p_reg_class * reg,u8 chan)3293 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3294 {
3295 reg->channel[reg->channels] = chan;
3296 reg->channels++;
3297 }
3298
3299
wpas_p2p_default_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3300 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3301 struct p2p_channels *chan,
3302 struct p2p_channels *cli_chan)
3303 {
3304 int i, cla = 0;
3305
3306 wpa_s->global->p2p_24ghz_social_channels = 1;
3307
3308 os_memset(cli_chan, 0, sizeof(*cli_chan));
3309
3310 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3311 "band");
3312
3313 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3314 chan->reg_class[cla].reg_class = 81;
3315 chan->reg_class[cla].channels = 0;
3316 for (i = 0; i < 11; i++) {
3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3318 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3319 }
3320 if (chan->reg_class[cla].channels)
3321 cla++;
3322
3323 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3324 "band");
3325
3326 /* Operating class 115 - 5 GHz, channels 36-48 */
3327 chan->reg_class[cla].reg_class = 115;
3328 chan->reg_class[cla].channels = 0;
3329 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3330 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3331 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3332 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3333 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3334 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3335 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3336 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3337 if (chan->reg_class[cla].channels)
3338 cla++;
3339
3340 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3341 "band");
3342
3343 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3344 chan->reg_class[cla].reg_class = 124;
3345 chan->reg_class[cla].channels = 0;
3346 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3347 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3348 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3349 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3350 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3351 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3352 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3353 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3354 if (chan->reg_class[cla].channels)
3355 cla++;
3356
3357 chan->reg_classes = cla;
3358 return 0;
3359 }
3360
3361
has_channel(struct wpa_global * global,struct hostapd_hw_modes * mode,u8 chan,int * flags)3362 static int has_channel(struct wpa_global *global,
3363 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3364 {
3365 int i;
3366 unsigned int freq;
3367
3368 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3369 chan * 5;
3370 if (wpas_p2p_disallowed_freq(global, freq))
3371 return NOT_ALLOWED;
3372
3373 for (i = 0; i < mode->num_channels; i++) {
3374 if (mode->channels[i].chan == chan) {
3375 if (flags)
3376 *flags = mode->channels[i].flag;
3377 if (mode->channels[i].flag &
3378 (HOSTAPD_CHAN_DISABLED |
3379 HOSTAPD_CHAN_RADAR))
3380 return NOT_ALLOWED;
3381 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3382 return NO_IR;
3383 return ALLOWED;
3384 }
3385 }
3386
3387 return NOT_ALLOWED;
3388 }
3389
3390
wpas_p2p_get_center_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3391 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3392 struct hostapd_hw_modes *mode,
3393 u8 channel)
3394 {
3395 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3396 size_t i;
3397
3398 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3399 return 0;
3400
3401 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3402 /*
3403 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3404 * so the center channel is 6 channels away from the start/end.
3405 */
3406 if (channel >= center_channels[i] - 6 &&
3407 channel <= center_channels[i] + 6)
3408 return center_channels[i];
3409
3410 return 0;
3411 }
3412
3413
wpas_p2p_verify_80mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3414 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3415 struct hostapd_hw_modes *mode,
3416 u8 channel, u8 bw)
3417 {
3418 u8 center_chan;
3419 int i, flags;
3420 enum chan_allowed res, ret = ALLOWED;
3421
3422 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3423 if (!center_chan)
3424 return NOT_ALLOWED;
3425 if (center_chan >= 58 && center_chan <= 138)
3426 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3427
3428 /* check all the channels are available */
3429 for (i = 0; i < 4; i++) {
3430 int adj_chan = center_chan - 6 + i * 4;
3431
3432 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3433 if (res == NOT_ALLOWED)
3434 return NOT_ALLOWED;
3435 if (res == NO_IR)
3436 ret = NO_IR;
3437
3438 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3439 return NOT_ALLOWED;
3440 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3441 return NOT_ALLOWED;
3442 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3443 return NOT_ALLOWED;
3444 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3445 return NOT_ALLOWED;
3446 }
3447
3448 return ret;
3449 }
3450
3451
wpas_p2p_get_center_160mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3452 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3453 struct hostapd_hw_modes *mode,
3454 u8 channel)
3455 {
3456 u8 center_channels[] = { 50, 114 };
3457 unsigned int i;
3458
3459 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3460 return 0;
3461
3462 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3463 /*
3464 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3465 * so the center channel is 14 channels away from the start/end.
3466 */
3467 if (channel >= center_channels[i] - 14 &&
3468 channel <= center_channels[i] + 14)
3469 return center_channels[i];
3470
3471 return 0;
3472 }
3473
3474
wpas_p2p_verify_160mhz(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3475 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3476 struct hostapd_hw_modes *mode,
3477 u8 channel, u8 bw)
3478 {
3479 u8 center_chan;
3480 int i, flags;
3481 enum chan_allowed res, ret = ALLOWED;
3482
3483 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3484 if (!center_chan)
3485 return NOT_ALLOWED;
3486 /* VHT 160 MHz uses DFS channels in most countries. */
3487
3488 /* Check all the channels are available */
3489 for (i = 0; i < 8; i++) {
3490 int adj_chan = center_chan - 14 + i * 4;
3491
3492 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3493 if (res == NOT_ALLOWED)
3494 return NOT_ALLOWED;
3495
3496 if (res == NO_IR)
3497 ret = NO_IR;
3498
3499 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3500 return NOT_ALLOWED;
3501 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3502 return NOT_ALLOWED;
3503 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3504 return NOT_ALLOWED;
3505 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3506 return NOT_ALLOWED;
3507 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3508 return NOT_ALLOWED;
3509 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3510 return NOT_ALLOWED;
3511 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3512 return NOT_ALLOWED;
3513 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3514 return NOT_ALLOWED;
3515 }
3516
3517 return ret;
3518 }
3519
3520
wpas_p2p_verify_channel(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel,u8 bw)3521 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3522 struct hostapd_hw_modes *mode,
3523 u8 channel, u8 bw)
3524 {
3525 int flag = 0;
3526 enum chan_allowed res, res2;
3527
3528 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3529 if (bw == BW40MINUS) {
3530 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3531 return NOT_ALLOWED;
3532 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3533 } else if (bw == BW40PLUS) {
3534 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3535 return NOT_ALLOWED;
3536 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3537 } else if (bw == BW80) {
3538 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3539 } else if (bw == BW160) {
3540 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3541 }
3542
3543 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3544 return NOT_ALLOWED;
3545 if (res == NO_IR || res2 == NO_IR)
3546 return NO_IR;
3547 return res;
3548 }
3549
3550
wpas_p2p_setup_channels(struct wpa_supplicant * wpa_s,struct p2p_channels * chan,struct p2p_channels * cli_chan)3551 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3552 struct p2p_channels *chan,
3553 struct p2p_channels *cli_chan)
3554 {
3555 struct hostapd_hw_modes *mode;
3556 int cla, op, cli_cla;
3557
3558 if (wpa_s->hw.modes == NULL) {
3559 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3560 "of all supported channels; assume dualband "
3561 "support");
3562 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3563 }
3564
3565 cla = cli_cla = 0;
3566
3567 for (op = 0; global_op_class[op].op_class; op++) {
3568 const struct oper_class_map *o = &global_op_class[op];
3569 u8 ch;
3570 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3571
3572 if (o->p2p == NO_P2P_SUPP)
3573 continue;
3574
3575 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3576 if (mode == NULL)
3577 continue;
3578 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3579 wpa_s->global->p2p_24ghz_social_channels = 1;
3580 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3581 enum chan_allowed res;
3582 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3583 if (res == ALLOWED) {
3584 if (reg == NULL) {
3585 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3586 o->op_class);
3587 reg = &chan->reg_class[cla];
3588 cla++;
3589 reg->reg_class = o->op_class;
3590 }
3591 reg->channel[reg->channels] = ch;
3592 reg->channels++;
3593 } else if (res == NO_IR &&
3594 wpa_s->conf->p2p_add_cli_chan) {
3595 if (cli_reg == NULL) {
3596 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3597 o->op_class);
3598 cli_reg = &cli_chan->reg_class[cli_cla];
3599 cli_cla++;
3600 cli_reg->reg_class = o->op_class;
3601 }
3602 cli_reg->channel[cli_reg->channels] = ch;
3603 cli_reg->channels++;
3604 }
3605 }
3606 if (reg) {
3607 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3608 reg->channel, reg->channels);
3609 }
3610 if (cli_reg) {
3611 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3612 cli_reg->channel, cli_reg->channels);
3613 }
3614 }
3615
3616 chan->reg_classes = cla;
3617 cli_chan->reg_classes = cli_cla;
3618
3619 return 0;
3620 }
3621
3622
wpas_p2p_get_ht40_mode(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3623 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3624 struct hostapd_hw_modes *mode, u8 channel)
3625 {
3626 int op;
3627 enum chan_allowed ret;
3628
3629 for (op = 0; global_op_class[op].op_class; op++) {
3630 const struct oper_class_map *o = &global_op_class[op];
3631 u8 ch;
3632
3633 if (o->p2p == NO_P2P_SUPP)
3634 continue;
3635
3636 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3637 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3638 (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3639 ch != channel)
3640 continue;
3641 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3642 if (ret == ALLOWED)
3643 return (o->bw == BW40MINUS) ? -1 : 1;
3644 }
3645 }
3646 return 0;
3647 }
3648
3649
wpas_p2p_get_vht80_center(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3650 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3651 struct hostapd_hw_modes *mode, u8 channel)
3652 {
3653 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3654 return 0;
3655
3656 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3657 }
3658
3659
wpas_p2p_get_vht160_center(struct wpa_supplicant * wpa_s,struct hostapd_hw_modes * mode,u8 channel)3660 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3661 struct hostapd_hw_modes *mode, u8 channel)
3662 {
3663 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3664 return 0;
3665 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3666 }
3667
3668
wpas_get_noa(void * ctx,const u8 * interface_addr,u8 * buf,size_t buf_len)3669 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3670 size_t buf_len)
3671 {
3672 struct wpa_supplicant *wpa_s = ctx;
3673
3674 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3675 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3676 break;
3677 }
3678 if (wpa_s == NULL)
3679 return -1;
3680
3681 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3682 }
3683
3684
wpas_get_p2p_go_iface(struct wpa_supplicant * wpa_s,const u8 * ssid,size_t ssid_len)3685 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3686 const u8 *ssid, size_t ssid_len)
3687 {
3688 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3689 struct wpa_ssid *s = wpa_s->current_ssid;
3690 if (s == NULL)
3691 continue;
3692 if (s->mode != WPAS_MODE_P2P_GO &&
3693 s->mode != WPAS_MODE_AP &&
3694 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3695 continue;
3696 if (s->ssid_len != ssid_len ||
3697 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3698 continue;
3699 return wpa_s;
3700 }
3701
3702 return NULL;
3703
3704 }
3705
3706
wpas_get_p2p_client_iface(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)3707 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3708 const u8 *peer_dev_addr)
3709 {
3710 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3711 struct wpa_ssid *ssid = wpa_s->current_ssid;
3712 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3713 continue;
3714 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3715 return wpa_s;
3716 }
3717
3718 return NULL;
3719 }
3720
3721
wpas_go_connected(void * ctx,const u8 * dev_addr)3722 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3723 {
3724 struct wpa_supplicant *wpa_s = ctx;
3725
3726 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3727 }
3728
3729
wpas_is_concurrent_session_active(void * ctx)3730 static int wpas_is_concurrent_session_active(void *ctx)
3731 {
3732 struct wpa_supplicant *wpa_s = ctx;
3733 struct wpa_supplicant *ifs;
3734
3735 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3736 if (ifs == wpa_s)
3737 continue;
3738 if (ifs->wpa_state > WPA_ASSOCIATED)
3739 return 1;
3740 }
3741 return 0;
3742 }
3743
3744
wpas_p2p_debug_print(void * ctx,int level,const char * msg)3745 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3746 {
3747 struct wpa_supplicant *wpa_s = ctx;
3748 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3749 }
3750
3751
wpas_p2p_add_p2pdev_interface(struct wpa_supplicant * wpa_s,const char * conf_p2p_dev)3752 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3753 const char *conf_p2p_dev)
3754 {
3755 struct wpa_interface iface;
3756 struct wpa_supplicant *p2pdev_wpa_s;
3757 char ifname[100];
3758 char force_name[100];
3759 int ret;
3760
3761 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3762 wpa_s->ifname);
3763 if (os_snprintf_error(sizeof(ifname), ret))
3764 return -1;
3765 force_name[0] = '\0';
3766 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3767 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3768 force_name, wpa_s->pending_interface_addr, NULL);
3769 if (ret < 0) {
3770 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3771 return ret;
3772 }
3773 os_strlcpy(wpa_s->pending_interface_name, ifname,
3774 sizeof(wpa_s->pending_interface_name));
3775
3776 os_memset(&iface, 0, sizeof(iface));
3777 iface.p2p_mgmt = 1;
3778 iface.ifname = wpa_s->pending_interface_name;
3779 iface.driver = wpa_s->driver->name;
3780 iface.driver_param = wpa_s->conf->driver_param;
3781
3782 /*
3783 * If a P2P Device configuration file was given, use it as the interface
3784 * configuration file (instead of using parent's configuration file.
3785 */
3786 if (conf_p2p_dev) {
3787 iface.confname = conf_p2p_dev;
3788 iface.ctrl_interface = NULL;
3789 } else {
3790 iface.confname = wpa_s->confname;
3791 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3792 }
3793
3794 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3795 if (!p2pdev_wpa_s) {
3796 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3797 return -1;
3798 }
3799
3800 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3801 wpa_s->pending_interface_name[0] = '\0';
3802 return 0;
3803 }
3804
3805
wpas_presence_resp(void * ctx,const u8 * src,u8 status,const u8 * noa,size_t noa_len)3806 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3807 const u8 *noa, size_t noa_len)
3808 {
3809 struct wpa_supplicant *wpa_s, *intf = ctx;
3810 char hex[100];
3811
3812 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3813 if (wpa_s->waiting_presence_resp)
3814 break;
3815 }
3816 if (!wpa_s) {
3817 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3818 return;
3819 }
3820 wpa_s->waiting_presence_resp = 0;
3821
3822 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3824 " status=%u noa=%s", MAC2STR(src), status, hex);
3825 }
3826
3827
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)3828 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3829 size_t ssid_len, u8 *go_dev_addr,
3830 u8 *ret_ssid, size_t *ret_ssid_len,
3831 u8 *intended_iface_addr)
3832 {
3833 struct wpa_supplicant *wpa_s = ctx;
3834 struct wpa_ssid *s;
3835
3836 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3837 if (s) {
3838 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3839 *ret_ssid_len = s->ssid_len;
3840 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3841
3842 if (s->mode != WPAS_MODE_P2P_GO) {
3843 os_memset(intended_iface_addr, 0, ETH_ALEN);
3844 } else if (wpas_p2p_create_iface(wpa_s)) {
3845 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3846 return 0;
3847
3848 os_memcpy(intended_iface_addr,
3849 wpa_s->pending_interface_addr, ETH_ALEN);
3850 } else {
3851 os_memcpy(intended_iface_addr, wpa_s->own_addr,
3852 ETH_ALEN);
3853 }
3854 return 1;
3855 }
3856
3857 return 0;
3858 }
3859
3860
wpas_get_go_info(void * ctx,u8 * intended_addr,u8 * ssid,size_t * ssid_len,int * group_iface,unsigned int * freq)3861 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3862 u8 *ssid, size_t *ssid_len, int *group_iface,
3863 unsigned int *freq)
3864 {
3865 struct wpa_supplicant *wpa_s = ctx;
3866 struct wpa_supplicant *go;
3867 struct wpa_ssid *s;
3868
3869 /*
3870 * group_iface will be set to 1 only if a dedicated interface for P2P
3871 * role is required. First, we try to reuse an active GO. However,
3872 * if it is not present, we will try to reactivate an existing
3873 * persistent group and set group_iface to 1, so the caller will know
3874 * that the pending interface should be used.
3875 */
3876 *group_iface = 0;
3877
3878 if (freq)
3879 *freq = 0;
3880
3881 go = wpas_p2p_get_go_group(wpa_s);
3882 if (!go) {
3883 s = wpas_p2p_get_persistent_go(wpa_s);
3884 *group_iface = wpas_p2p_create_iface(wpa_s);
3885 if (s)
3886 os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3887 else
3888 return 0;
3889 } else {
3890 s = go->current_ssid;
3891 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3892 if (freq)
3893 *freq = go->assoc_freq;
3894 }
3895
3896 os_memcpy(ssid, s->ssid, s->ssid_len);
3897 *ssid_len = s->ssid_len;
3898
3899 return 1;
3900 }
3901
3902
wpas_remove_stale_groups(void * ctx,const u8 * peer,const u8 * go,const u8 * ssid,size_t ssid_len)3903 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3904 const u8 *ssid, size_t ssid_len)
3905 {
3906 struct wpa_supplicant *wpa_s = ctx;
3907 struct wpa_ssid *s;
3908 int save_config = 0;
3909 size_t i;
3910
3911 /* Start with our first choice of Persistent Groups */
3912 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3913 if (go && ssid && ssid_len &&
3914 s->ssid_len == ssid_len &&
3915 os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3916 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3917 break;
3918
3919 /* Remove stale persistent group */
3920 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3921 wpa_config_remove_network(wpa_s->conf, s->id);
3922 save_config = 1;
3923 continue;
3924 }
3925
3926 for (i = 0; i < s->num_p2p_clients; i++) {
3927 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3928 peer, ETH_ALEN) != 0)
3929 continue;
3930
3931 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3932 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3933 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3934 break;
3935 }
3936 s->num_p2p_clients--;
3937 save_config = 1;
3938 }
3939
3940 if (save_config)
3941 p2p_config_write(wpa_s);
3942
3943 /* Return TRUE if valid SSID remains */
3944 return s != NULL;
3945 }
3946
3947
wpas_p2ps_get_feat_cap_str(char * buf,size_t buf_len,const u8 * feat_cap,size_t feat_cap_len)3948 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3949 const u8 *feat_cap, size_t feat_cap_len)
3950 {
3951 static const char pref[] = " feature_cap=";
3952 int ret;
3953
3954 buf[0] = '\0';
3955
3956 /*
3957 * We expect a feature capability to contain at least one byte to be
3958 * reported. The string buffer provided by the caller function is
3959 * expected to be big enough to contain all bytes of the attribute for
3960 * known specifications. This function truncates the reported bytes if
3961 * the feature capability data exceeds the string buffer size.
3962 */
3963 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3964 return;
3965
3966 os_memcpy(buf, pref, sizeof(pref));
3967 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3968 buf_len - sizeof(pref) + 1,
3969 feat_cap, feat_cap_len);
3970
3971 if (ret != (2 * (int) feat_cap_len))
3972 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3973 }
3974
3975
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)3976 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3977 const u8 *adv_mac, const u8 *ses_mac,
3978 const u8 *grp_mac, u32 adv_id, u32 ses_id,
3979 u8 conncap, int passwd_id,
3980 const u8 *persist_ssid,
3981 size_t persist_ssid_size, int response_done,
3982 int prov_start, const char *session_info,
3983 const u8 *feat_cap, size_t feat_cap_len,
3984 unsigned int freq,
3985 const u8 *group_ssid, size_t group_ssid_len)
3986 {
3987 struct wpa_supplicant *wpa_s = ctx;
3988 u8 mac[ETH_ALEN];
3989 struct wpa_ssid *persistent_go, *stale, *s = NULL;
3990 int save_config = 0;
3991 struct wpa_supplicant *go_wpa_s;
3992 char feat_cap_str[256];
3993
3994 if (!dev)
3995 return;
3996
3997 os_memset(mac, 0, ETH_ALEN);
3998 if (!adv_mac)
3999 adv_mac = mac;
4000 if (!ses_mac)
4001 ses_mac = mac;
4002 if (!grp_mac)
4003 grp_mac = mac;
4004
4005 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
4006 feat_cap, feat_cap_len);
4007
4008 if (prov_start) {
4009 if (session_info == NULL) {
4010 wpa_msg_global(wpa_s, MSG_INFO,
4011 P2P_EVENT_P2PS_PROVISION_START MACSTR
4012 " adv_id=%x conncap=%x"
4013 " adv_mac=" MACSTR
4014 " session=%x mac=" MACSTR
4015 " dev_passwd_id=%d%s",
4016 MAC2STR(dev), adv_id, conncap,
4017 MAC2STR(adv_mac),
4018 ses_id, MAC2STR(ses_mac),
4019 passwd_id, feat_cap_str);
4020 } else {
4021 wpa_msg_global(wpa_s, MSG_INFO,
4022 P2P_EVENT_P2PS_PROVISION_START MACSTR
4023 " adv_id=%x conncap=%x"
4024 " adv_mac=" MACSTR
4025 " session=%x mac=" MACSTR
4026 " dev_passwd_id=%d info='%s'%s",
4027 MAC2STR(dev), adv_id, conncap,
4028 MAC2STR(adv_mac),
4029 ses_id, MAC2STR(ses_mac),
4030 passwd_id, session_info, feat_cap_str);
4031 }
4032 return;
4033 }
4034
4035 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4036 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4037
4038 if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4039 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4040 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4041
4042 if (persistent_go && !persistent_go->num_p2p_clients) {
4043 /* remove empty persistent GO */
4044 wpa_config_remove_network(wpa_s->conf,
4045 persistent_go->id);
4046 }
4047
4048 wpa_msg_global(wpa_s, MSG_INFO,
4049 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4050 " status=%d"
4051 " adv_id=%x adv_mac=" MACSTR
4052 " session=%x mac=" MACSTR "%s",
4053 MAC2STR(dev), status,
4054 adv_id, MAC2STR(adv_mac),
4055 ses_id, MAC2STR(ses_mac), feat_cap_str);
4056 return;
4057 }
4058
4059 /* Clean up stale persistent groups with this device */
4060 if (persist_ssid && persist_ssid_size)
4061 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4062 persist_ssid_size);
4063
4064 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4065 is_zero_ether_addr(grp_mac)) {
4066 wpa_dbg(wpa_s, MSG_ERROR,
4067 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4068 return;
4069 }
4070
4071 for (;;) {
4072 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4073 if (!stale)
4074 break;
4075
4076 if (s && s->ssid_len == stale->ssid_len &&
4077 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4078 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4079 break;
4080
4081 /* Remove stale persistent group */
4082 if (stale->mode != WPAS_MODE_P2P_GO ||
4083 stale->num_p2p_clients <= 1) {
4084 wpa_config_remove_network(wpa_s->conf, stale->id);
4085 } else {
4086 size_t i;
4087
4088 for (i = 0; i < stale->num_p2p_clients; i++) {
4089 if (os_memcmp(stale->p2p_client_list +
4090 i * ETH_ALEN,
4091 dev, ETH_ALEN) == 0) {
4092 os_memmove(stale->p2p_client_list +
4093 i * ETH_ALEN,
4094 stale->p2p_client_list +
4095 (i + 1) * ETH_ALEN,
4096 (stale->num_p2p_clients -
4097 i - 1) * ETH_ALEN);
4098 break;
4099 }
4100 }
4101 stale->num_p2p_clients--;
4102 }
4103 save_config = 1;
4104 }
4105
4106 if (save_config)
4107 p2p_config_write(wpa_s);
4108
4109 if (s) {
4110 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4111 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4112
4113 if (persistent_go && s != persistent_go &&
4114 !persistent_go->num_p2p_clients) {
4115 /* remove empty persistent GO */
4116 wpa_config_remove_network(wpa_s->conf,
4117 persistent_go->id);
4118 /* Save config */
4119 }
4120
4121 wpa_msg_global(wpa_s, MSG_INFO,
4122 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4123 " status=%d"
4124 " adv_id=%x adv_mac=" MACSTR
4125 " session=%x mac=" MACSTR
4126 " persist=%d%s",
4127 MAC2STR(dev), status,
4128 adv_id, MAC2STR(adv_mac),
4129 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4130 return;
4131 }
4132
4133 if (conncap == P2PS_SETUP_GROUP_OWNER) {
4134 /*
4135 * We need to copy the interface name. Simply saving a
4136 * pointer isn't enough, since if we use pending_interface_name
4137 * it will be overwritten when the group is added.
4138 */
4139 char go_ifname[100];
4140
4141 go_ifname[0] = '\0';
4142 if (!go_wpa_s) {
4143 wpa_s->global->pending_p2ps_group = 1;
4144 wpa_s->global->pending_p2ps_group_freq = freq;
4145
4146 if (!wpas_p2p_create_iface(wpa_s))
4147 os_memcpy(go_ifname, wpa_s->ifname,
4148 sizeof(go_ifname));
4149 else if (wpa_s->pending_interface_name[0])
4150 os_memcpy(go_ifname,
4151 wpa_s->pending_interface_name,
4152 sizeof(go_ifname));
4153
4154 if (!go_ifname[0]) {
4155 wpas_p2ps_prov_complete(
4156 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4157 dev, adv_mac, ses_mac,
4158 grp_mac, adv_id, ses_id, 0, 0,
4159 NULL, 0, 0, 0, NULL, NULL, 0, 0,
4160 NULL, 0);
4161 return;
4162 }
4163
4164 /* If PD Resp complete, start up the GO */
4165 if (response_done && persistent_go) {
4166 wpas_p2p_group_add_persistent(
4167 wpa_s, persistent_go,
4168 0, 0, freq, 0, 0, 0, 0, NULL,
4169 persistent_go->mode ==
4170 WPAS_MODE_P2P_GO ?
4171 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4172 0, 0);
4173 } else if (response_done) {
4174 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4175 }
4176
4177 if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4178 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4179 ETH_ALEN);
4180 wpa_s->p2ps_method_config_any = 1;
4181 }
4182 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4183 os_memcpy(go_ifname, go_wpa_s->ifname,
4184 sizeof(go_ifname));
4185
4186 if (is_zero_ether_addr(grp_mac)) {
4187 wpa_dbg(go_wpa_s, MSG_DEBUG,
4188 "P2P: Setting PIN-1 for ANY");
4189 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4190 "12345670", NULL, 0,
4191 0);
4192 } else {
4193 wpa_dbg(go_wpa_s, MSG_DEBUG,
4194 "P2P: Setting PIN-1 for " MACSTR,
4195 MAC2STR(grp_mac));
4196 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4197 "12345670", NULL, 0,
4198 0);
4199 }
4200
4201 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4202 wpa_s->p2ps_method_config_any = 1;
4203 }
4204
4205 wpa_msg_global(wpa_s, MSG_INFO,
4206 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4207 " status=%d conncap=%x"
4208 " adv_id=%x adv_mac=" MACSTR
4209 " session=%x mac=" MACSTR
4210 " dev_passwd_id=%d go=%s%s",
4211 MAC2STR(dev), status, conncap,
4212 adv_id, MAC2STR(adv_mac),
4213 ses_id, MAC2STR(ses_mac),
4214 passwd_id, go_ifname, feat_cap_str);
4215 return;
4216 }
4217
4218 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4219 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4220
4221 if (persistent_go && !persistent_go->num_p2p_clients) {
4222 /* remove empty persistent GO */
4223 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4224 }
4225
4226 if (conncap == P2PS_SETUP_CLIENT) {
4227 char ssid_hex[32 * 2 + 1];
4228
4229 if (group_ssid)
4230 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4231 group_ssid, group_ssid_len);
4232 else
4233 ssid_hex[0] = '\0';
4234 wpa_msg_global(wpa_s, MSG_INFO,
4235 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4236 " status=%d conncap=%x"
4237 " adv_id=%x adv_mac=" MACSTR
4238 " session=%x mac=" MACSTR
4239 " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4240 MAC2STR(dev), status, conncap,
4241 adv_id, MAC2STR(adv_mac),
4242 ses_id, MAC2STR(ses_mac),
4243 passwd_id, MAC2STR(grp_mac), feat_cap_str,
4244 group_ssid ? " group_ssid=" : "", ssid_hex);
4245 } else {
4246 wpa_msg_global(wpa_s, MSG_INFO,
4247 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4248 " status=%d conncap=%x"
4249 " adv_id=%x adv_mac=" MACSTR
4250 " session=%x mac=" MACSTR
4251 " dev_passwd_id=%d%s",
4252 MAC2STR(dev), status, conncap,
4253 adv_id, MAC2STR(adv_mac),
4254 ses_id, MAC2STR(ses_mac),
4255 passwd_id, feat_cap_str);
4256 }
4257 }
4258
4259
_wpas_p2p_in_progress(void * ctx)4260 static int _wpas_p2p_in_progress(void *ctx)
4261 {
4262 struct wpa_supplicant *wpa_s = ctx;
4263 return wpas_p2p_in_progress(wpa_s);
4264 }
4265
4266
wpas_prov_disc_resp_cb(void * ctx)4267 static int wpas_prov_disc_resp_cb(void *ctx)
4268 {
4269 struct wpa_supplicant *wpa_s = ctx;
4270 struct wpa_ssid *persistent_go;
4271 unsigned int freq;
4272
4273 if (!wpa_s->global->pending_p2ps_group)
4274 return 0;
4275
4276 freq = wpa_s->global->pending_p2ps_group_freq;
4277 wpa_s->global->pending_p2ps_group_freq = 0;
4278 wpa_s->global->pending_p2ps_group = 0;
4279
4280 if (wpas_p2p_get_go_group(wpa_s))
4281 return 0;
4282 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4283
4284 if (persistent_go) {
4285 wpas_p2p_group_add_persistent(
4286 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4287 persistent_go->mode == WPAS_MODE_P2P_GO ?
4288 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4289 } else {
4290 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4291 }
4292
4293 return 1;
4294 }
4295
4296
wpas_p2p_get_pref_freq_list(void * ctx,int go,unsigned int * len,unsigned int * freq_list)4297 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4298 unsigned int *len,
4299 unsigned int *freq_list)
4300 {
4301 struct wpa_supplicant *wpa_s = ctx;
4302
4303 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4304 WPA_IF_P2P_CLIENT, len, freq_list);
4305 }
4306
4307
4308 /**
4309 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4310 * @global: Pointer to global data from wpa_supplicant_init()
4311 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4312 * Returns: 0 on success, -1 on failure
4313 */
wpas_p2p_init(struct wpa_global * global,struct wpa_supplicant * wpa_s)4314 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4315 {
4316 struct p2p_config p2p;
4317 int i;
4318
4319 if (wpa_s->conf->p2p_disabled)
4320 return 0;
4321
4322 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4323 return 0;
4324
4325 if (global->p2p)
4326 return 0;
4327
4328 os_memset(&p2p, 0, sizeof(p2p));
4329 p2p.cb_ctx = wpa_s;
4330 p2p.debug_print = wpas_p2p_debug_print;
4331 p2p.p2p_scan = wpas_p2p_scan;
4332 p2p.send_action = wpas_send_action;
4333 p2p.send_action_done = wpas_send_action_done;
4334 p2p.go_neg_completed = wpas_go_neg_completed;
4335 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4336 p2p.dev_found = wpas_dev_found;
4337 p2p.dev_lost = wpas_dev_lost;
4338 p2p.find_stopped = wpas_find_stopped;
4339 p2p.start_listen = wpas_start_listen;
4340 p2p.stop_listen = wpas_stop_listen;
4341 p2p.send_probe_resp = wpas_send_probe_resp;
4342 p2p.sd_request = wpas_sd_request;
4343 p2p.sd_response = wpas_sd_response;
4344 p2p.prov_disc_req = wpas_prov_disc_req;
4345 p2p.prov_disc_resp = wpas_prov_disc_resp;
4346 p2p.prov_disc_fail = wpas_prov_disc_fail;
4347 p2p.invitation_process = wpas_invitation_process;
4348 p2p.invitation_received = wpas_invitation_received;
4349 p2p.invitation_result = wpas_invitation_result;
4350 p2p.get_noa = wpas_get_noa;
4351 p2p.go_connected = wpas_go_connected;
4352 p2p.presence_resp = wpas_presence_resp;
4353 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4354 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4355 p2p.get_persistent_group = wpas_get_persistent_group;
4356 p2p.get_go_info = wpas_get_go_info;
4357 p2p.remove_stale_groups = wpas_remove_stale_groups;
4358 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4359 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4360 p2p.p2ps_group_capability = p2ps_group_capability;
4361 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4362
4363 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4364 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4365 p2p.dev_name = wpa_s->conf->device_name;
4366 p2p.manufacturer = wpa_s->conf->manufacturer;
4367 p2p.model_name = wpa_s->conf->model_name;
4368 p2p.model_number = wpa_s->conf->model_number;
4369 p2p.serial_number = wpa_s->conf->serial_number;
4370 if (wpa_s->wps) {
4371 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4372 p2p.config_methods = wpa_s->wps->config_methods;
4373 }
4374
4375 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4376 wpa_printf(MSG_ERROR,
4377 "P2P: Failed to configure supported channel list");
4378 return -1;
4379 }
4380
4381 if (wpa_s->conf->p2p_listen_reg_class &&
4382 wpa_s->conf->p2p_listen_channel) {
4383 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4384 p2p.channel = wpa_s->conf->p2p_listen_channel;
4385 p2p.channel_forced = 1;
4386 } else {
4387 /*
4388 * Pick one of the social channels randomly as the listen
4389 * channel.
4390 */
4391 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4392 &p2p.channel) != 0) {
4393 wpa_printf(MSG_INFO,
4394 "P2P: No social channels supported by the driver - do not enable P2P");
4395 return 0;
4396 }
4397 p2p.channel_forced = 0;
4398 }
4399 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4400 p2p.reg_class, p2p.channel);
4401
4402 if (wpa_s->conf->p2p_oper_reg_class &&
4403 wpa_s->conf->p2p_oper_channel) {
4404 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4405 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4406 p2p.cfg_op_channel = 1;
4407 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4408 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4409
4410 } else {
4411 /*
4412 * Use random operation channel from 2.4 GHz band social
4413 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4414 * other preference is indicated.
4415 */
4416 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4417 &p2p.op_channel) != 0) {
4418 wpa_printf(MSG_ERROR,
4419 "P2P: Failed to select random social channel as operation channel");
4420 return -1;
4421 }
4422 p2p.cfg_op_channel = 0;
4423 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4424 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4425 }
4426
4427 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4428 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4429 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4430 }
4431
4432 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4433 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4434 p2p.country[2] = 0x04;
4435 } else
4436 os_memcpy(p2p.country, "XX\x04", 3);
4437
4438 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4439 WPS_DEV_TYPE_LEN);
4440
4441 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4442 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4443 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4444
4445 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4446 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4447
4448 p2p.max_peers = 100;
4449
4450 if (wpa_s->conf->p2p_ssid_postfix) {
4451 p2p.ssid_postfix_len =
4452 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4453 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4454 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4455 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4456 p2p.ssid_postfix_len);
4457 }
4458
4459 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4460
4461 p2p.max_listen = wpa_s->max_remain_on_chan;
4462
4463 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4464 wpa_s->conf->p2p_passphrase_len <= 63)
4465 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4466 else
4467 p2p.passphrase_len = 8;
4468
4469 global->p2p = p2p_init(&p2p);
4470 if (global->p2p == NULL)
4471 return -1;
4472 global->p2p_init_wpa_s = wpa_s;
4473
4474 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4475 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4476 continue;
4477 p2p_add_wps_vendor_extension(
4478 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4479 }
4480
4481 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4482
4483 return 0;
4484 }
4485
4486
4487 /**
4488 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4489 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4490 *
4491 * This function deinitialize per-interface P2P data.
4492 */
wpas_p2p_deinit(struct wpa_supplicant * wpa_s)4493 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4494 {
4495 if (wpa_s->driver && wpa_s->drv_priv)
4496 wpa_drv_probe_req_report(wpa_s, 0);
4497
4498 if (wpa_s->go_params) {
4499 /* Clear any stored provisioning info */
4500 p2p_clear_provisioning_info(
4501 wpa_s->global->p2p,
4502 wpa_s->go_params->peer_device_addr);
4503 }
4504
4505 os_free(wpa_s->go_params);
4506 wpa_s->go_params = NULL;
4507 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4508 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4509 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4510 wpa_s->p2p_long_listen = 0;
4511 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4512 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4513 wpas_p2p_remove_pending_group_interface(wpa_s);
4514 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4515 wpas_p2p_listen_work_done(wpa_s);
4516 if (wpa_s->p2p_send_action_work) {
4517 os_free(wpa_s->p2p_send_action_work->ctx);
4518 radio_work_done(wpa_s->p2p_send_action_work);
4519 wpa_s->p2p_send_action_work = NULL;
4520 }
4521 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4522
4523 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4524 wpa_s->p2p_oob_dev_pw = NULL;
4525
4526 os_free(wpa_s->p2p_group_common_freqs);
4527 wpa_s->p2p_group_common_freqs = NULL;
4528 wpa_s->p2p_group_common_freqs_num = 0;
4529
4530 /* TODO: remove group interface from the driver if this wpa_s instance
4531 * is on top of a P2P group interface */
4532 }
4533
4534
4535 /**
4536 * wpas_p2p_deinit_global - Deinitialize global P2P module
4537 * @global: Pointer to global data from wpa_supplicant_init()
4538 *
4539 * This function deinitializes the global (per device) P2P module.
4540 */
wpas_p2p_deinit_global(struct wpa_global * global)4541 static void wpas_p2p_deinit_global(struct wpa_global *global)
4542 {
4543 struct wpa_supplicant *wpa_s, *tmp;
4544
4545 wpa_s = global->ifaces;
4546
4547 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4548
4549 /* Remove remaining P2P group interfaces */
4550 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4551 wpa_s = wpa_s->next;
4552 while (wpa_s) {
4553 tmp = global->ifaces;
4554 while (tmp &&
4555 (tmp == wpa_s ||
4556 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4557 tmp = tmp->next;
4558 }
4559 if (tmp == NULL)
4560 break;
4561 /* Disconnect from the P2P group and deinit the interface */
4562 wpas_p2p_disconnect(tmp);
4563 }
4564
4565 /*
4566 * Deinit GO data on any possibly remaining interface (if main
4567 * interface is used as GO).
4568 */
4569 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4570 if (wpa_s->ap_iface)
4571 wpas_p2p_group_deinit(wpa_s);
4572 }
4573
4574 p2p_deinit(global->p2p);
4575 global->p2p = NULL;
4576 global->p2p_init_wpa_s = NULL;
4577 }
4578
4579
wpas_p2p_create_iface(struct wpa_supplicant * wpa_s)4580 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4581 {
4582 if (wpa_s->conf->p2p_no_group_iface)
4583 return 0; /* separate interface disabled per configuration */
4584 if (wpa_s->drv_flags &
4585 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4586 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4587 return 1; /* P2P group requires a new interface in every case
4588 */
4589 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4590 return 0; /* driver does not support concurrent operations */
4591 if (wpa_s->global->ifaces->next)
4592 return 1; /* more that one interface already in use */
4593 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4594 return 1; /* this interface is already in use */
4595 return 0;
4596 }
4597
4598
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)4599 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4600 const u8 *peer_addr,
4601 enum p2p_wps_method wps_method,
4602 int go_intent, const u8 *own_interface_addr,
4603 unsigned int force_freq, int persistent_group,
4604 struct wpa_ssid *ssid, unsigned int pref_freq)
4605 {
4606 if (persistent_group && wpa_s->conf->persistent_reconnect)
4607 persistent_group = 2;
4608
4609 /*
4610 * Increase GO config timeout if HT40 is used since it takes some time
4611 * to scan channels for coex purposes before the BSS can be started.
4612 */
4613 p2p_set_config_timeout(wpa_s->global->p2p,
4614 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4615
4616 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4617 go_intent, own_interface_addr, force_freq,
4618 persistent_group, ssid ? ssid->ssid : NULL,
4619 ssid ? ssid->ssid_len : 0,
4620 wpa_s->p2p_pd_before_go_neg, pref_freq,
4621 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4622 0);
4623 }
4624
4625
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)4626 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4627 const u8 *peer_addr,
4628 enum p2p_wps_method wps_method,
4629 int go_intent, const u8 *own_interface_addr,
4630 unsigned int force_freq, int persistent_group,
4631 struct wpa_ssid *ssid, unsigned int pref_freq)
4632 {
4633 if (persistent_group && wpa_s->conf->persistent_reconnect)
4634 persistent_group = 2;
4635
4636 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4637 go_intent, own_interface_addr, force_freq,
4638 persistent_group, ssid ? ssid->ssid : NULL,
4639 ssid ? ssid->ssid_len : 0, pref_freq,
4640 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4641 0);
4642 }
4643
4644
wpas_p2p_check_join_scan_limit(struct wpa_supplicant * wpa_s)4645 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4646 {
4647 wpa_s->p2p_join_scan_count++;
4648 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4649 wpa_s->p2p_join_scan_count);
4650 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4651 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4652 " for join operationg - stop join attempt",
4653 MAC2STR(wpa_s->pending_join_iface_addr));
4654 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4655 if (wpa_s->p2p_auto_pd) {
4656 wpa_s->p2p_auto_pd = 0;
4657 wpa_msg_global(wpa_s, MSG_INFO,
4658 P2P_EVENT_PROV_DISC_FAILURE
4659 " p2p_dev_addr=" MACSTR " status=N/A",
4660 MAC2STR(wpa_s->pending_join_dev_addr));
4661 return;
4662 }
4663 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4664 P2P_EVENT_GROUP_FORMATION_FAILURE);
4665 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4666 }
4667 }
4668
4669
wpas_check_freq_conflict(struct wpa_supplicant * wpa_s,int freq)4670 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4671 {
4672 int res;
4673 unsigned int num, i;
4674 struct wpa_used_freq_data *freqs;
4675
4676 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4677 /* Multiple channels are supported and not all are in use */
4678 return 0;
4679 }
4680
4681 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4682 sizeof(struct wpa_used_freq_data));
4683 if (!freqs)
4684 return 1;
4685
4686 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4687 wpa_s->num_multichan_concurrent);
4688
4689 for (i = 0; i < num; i++) {
4690 if (freqs[i].freq == freq) {
4691 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4692 freq);
4693 res = 0;
4694 goto exit_free;
4695 }
4696 }
4697
4698 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4699 res = 1;
4700
4701 exit_free:
4702 os_free(freqs);
4703 return res;
4704 }
4705
4706
wpas_p2p_peer_go(struct wpa_supplicant * wpa_s,const u8 * peer_dev_addr)4707 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4708 const u8 *peer_dev_addr)
4709 {
4710 struct wpa_bss *bss;
4711 int updated;
4712
4713 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4714 if (bss == NULL)
4715 return -1;
4716 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4717 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4718 "last scan");
4719 return 0;
4720 }
4721
4722 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4723 &bss->last_update);
4724 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4725 "%ld.%06ld (%supdated in last scan)",
4726 bss->last_update.sec, bss->last_update.usec,
4727 updated ? "": "not ");
4728
4729 return updated;
4730 }
4731
4732
wpas_p2p_scan_res_join(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)4733 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4734 struct wpa_scan_results *scan_res)
4735 {
4736 struct wpa_bss *bss = NULL;
4737 int freq;
4738 u8 iface_addr[ETH_ALEN];
4739
4740 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4741
4742 if (wpa_s->global->p2p_disabled)
4743 return;
4744
4745 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4746 scan_res ? (int) scan_res->num : -1,
4747 wpa_s->p2p_auto_join ? "auto_" : "");
4748
4749 if (scan_res)
4750 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4751
4752 if (wpa_s->p2p_auto_pd) {
4753 int join = wpas_p2p_peer_go(wpa_s,
4754 wpa_s->pending_join_dev_addr);
4755 if (join == 0 &&
4756 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4757 wpa_s->auto_pd_scan_retry++;
4758 bss = wpa_bss_get_bssid_latest(
4759 wpa_s, wpa_s->pending_join_dev_addr);
4760 if (bss) {
4761 freq = bss->freq;
4762 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4763 "the peer " MACSTR " at %d MHz",
4764 wpa_s->auto_pd_scan_retry,
4765 MAC2STR(wpa_s->
4766 pending_join_dev_addr),
4767 freq);
4768 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4769 return;
4770 }
4771 }
4772
4773 if (join < 0)
4774 join = 0;
4775
4776 wpa_s->p2p_auto_pd = 0;
4777 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4778 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4779 MAC2STR(wpa_s->pending_join_dev_addr), join);
4780 if (p2p_prov_disc_req(wpa_s->global->p2p,
4781 wpa_s->pending_join_dev_addr, NULL,
4782 wpa_s->pending_pd_config_methods, join,
4783 0, wpa_s->user_initiated_pd) < 0) {
4784 wpa_s->p2p_auto_pd = 0;
4785 wpa_msg_global(wpa_s, MSG_INFO,
4786 P2P_EVENT_PROV_DISC_FAILURE
4787 " p2p_dev_addr=" MACSTR " status=N/A",
4788 MAC2STR(wpa_s->pending_join_dev_addr));
4789 }
4790 return;
4791 }
4792
4793 if (wpa_s->p2p_auto_join) {
4794 int join = wpas_p2p_peer_go(wpa_s,
4795 wpa_s->pending_join_dev_addr);
4796 if (join < 0) {
4797 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4798 "running a GO -> use GO Negotiation");
4799 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4800 P2P_EVENT_FALLBACK_TO_GO_NEG
4801 "reason=peer-not-running-GO");
4802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4803 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4804 wpa_s->p2p_persistent_group, 0, 0, 0,
4805 wpa_s->p2p_go_intent,
4806 wpa_s->p2p_connect_freq,
4807 wpa_s->p2p_go_vht_center_freq2,
4808 wpa_s->p2p_persistent_id,
4809 wpa_s->p2p_pd_before_go_neg,
4810 wpa_s->p2p_go_ht40,
4811 wpa_s->p2p_go_vht,
4812 wpa_s->p2p_go_max_oper_chwidth,
4813 NULL, 0);
4814 return;
4815 }
4816
4817 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4818 "try to join the group", join ? "" :
4819 " in older scan");
4820 if (!join) {
4821 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4822 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4823 wpa_s->p2p_fallback_to_go_neg = 1;
4824 }
4825 }
4826
4827 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4828 wpa_s->pending_join_iface_addr);
4829 if (freq < 0 &&
4830 p2p_get_interface_addr(wpa_s->global->p2p,
4831 wpa_s->pending_join_dev_addr,
4832 iface_addr) == 0 &&
4833 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4834 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4835 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4836 "address for join from " MACSTR " to " MACSTR
4837 " based on newly discovered P2P peer entry",
4838 MAC2STR(wpa_s->pending_join_iface_addr),
4839 MAC2STR(iface_addr));
4840 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4841 ETH_ALEN);
4842
4843 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4844 wpa_s->pending_join_iface_addr);
4845 }
4846 if (freq >= 0) {
4847 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4848 "from P2P peer table: %d MHz", freq);
4849 }
4850 if (wpa_s->p2p_join_ssid_len) {
4851 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4852 MACSTR " and SSID %s",
4853 MAC2STR(wpa_s->pending_join_iface_addr),
4854 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4855 wpa_s->p2p_join_ssid_len));
4856 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4857 wpa_s->p2p_join_ssid,
4858 wpa_s->p2p_join_ssid_len);
4859 } else if (!bss) {
4860 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4861 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4862 bss = wpa_bss_get_bssid_latest(wpa_s,
4863 wpa_s->pending_join_iface_addr);
4864 }
4865 if (bss) {
4866 u8 dev_addr[ETH_ALEN];
4867
4868 freq = bss->freq;
4869 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4870 "from BSS table: %d MHz (SSID %s)", freq,
4871 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4872 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4873 dev_addr) == 0 &&
4874 os_memcmp(wpa_s->pending_join_dev_addr,
4875 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4876 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4877 ETH_ALEN) != 0) {
4878 wpa_printf(MSG_DEBUG,
4879 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4880 MAC2STR(dev_addr),
4881 MAC2STR(wpa_s->pending_join_dev_addr));
4882 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4883 ETH_ALEN);
4884 }
4885 }
4886 if (freq > 0) {
4887 u16 method;
4888
4889 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4890 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4891 P2P_EVENT_GROUP_FORMATION_FAILURE
4892 "reason=FREQ_CONFLICT");
4893 wpas_notify_p2p_group_formation_failure(
4894 wpa_s, "FREQ_CONFLICT");
4895 return;
4896 }
4897
4898 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4899 "prior to joining an existing group (GO " MACSTR
4900 " freq=%u MHz)",
4901 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4902 wpa_s->pending_pd_before_join = 1;
4903
4904 switch (wpa_s->pending_join_wps_method) {
4905 case WPS_PIN_DISPLAY:
4906 method = WPS_CONFIG_KEYPAD;
4907 break;
4908 case WPS_PIN_KEYPAD:
4909 method = WPS_CONFIG_DISPLAY;
4910 break;
4911 case WPS_PBC:
4912 method = WPS_CONFIG_PUSHBUTTON;
4913 break;
4914 case WPS_P2PS:
4915 method = WPS_CONFIG_P2PS;
4916 break;
4917 default:
4918 method = 0;
4919 break;
4920 }
4921
4922 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4923 wpa_s->pending_join_dev_addr) ==
4924 method)) {
4925 /*
4926 * We have already performed provision discovery for
4927 * joining the group. Proceed directly to join
4928 * operation without duplicated provision discovery. */
4929 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4930 "with " MACSTR " already done - proceed to "
4931 "join",
4932 MAC2STR(wpa_s->pending_join_dev_addr));
4933 wpa_s->pending_pd_before_join = 0;
4934 goto start;
4935 }
4936
4937 if (p2p_prov_disc_req(wpa_s->global->p2p,
4938 wpa_s->pending_join_dev_addr,
4939 NULL, method, 1,
4940 freq, wpa_s->user_initiated_pd) < 0) {
4941 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4942 "Discovery Request before joining an "
4943 "existing group");
4944 wpa_s->pending_pd_before_join = 0;
4945 goto start;
4946 }
4947 return;
4948 }
4949
4950 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4951 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4952 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4953 wpas_p2p_check_join_scan_limit(wpa_s);
4954 return;
4955
4956 start:
4957 /* Start join operation immediately */
4958 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4959 wpa_s->p2p_join_ssid_len);
4960 }
4961
4962
wpas_p2p_join_scan_req(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)4963 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4964 const u8 *ssid, size_t ssid_len)
4965 {
4966 int ret;
4967 struct wpa_driver_scan_params params;
4968 struct wpabuf *wps_ie, *ies;
4969 size_t ielen;
4970 int freqs[2] = { 0, 0 };
4971 unsigned int bands;
4972
4973 os_memset(¶ms, 0, sizeof(params));
4974
4975 /* P2P Wildcard SSID */
4976 params.num_ssids = 1;
4977 if (ssid && ssid_len) {
4978 params.ssids[0].ssid = ssid;
4979 params.ssids[0].ssid_len = ssid_len;
4980 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4981 wpa_s->p2p_join_ssid_len = ssid_len;
4982 } else {
4983 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4984 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4985 wpa_s->p2p_join_ssid_len = 0;
4986 }
4987
4988 wpa_s->wps->dev.p2p = 1;
4989 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4990 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4991 NULL);
4992 if (wps_ie == NULL) {
4993 wpas_p2p_scan_res_join(wpa_s, NULL);
4994 return;
4995 }
4996
4997 if (!freq) {
4998 int oper_freq;
4999 /*
5000 * If freq is not provided, check the operating freq of the GO
5001 * and use a single channel scan on if possible.
5002 */
5003 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5004 wpa_s->pending_join_iface_addr);
5005 if (oper_freq > 0)
5006 freq = oper_freq;
5007 }
5008 if (freq > 0) {
5009 freqs[0] = freq;
5010 params.freqs = freqs;
5011 }
5012
5013 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5014 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5015 if (ies == NULL) {
5016 wpabuf_free(wps_ie);
5017 wpas_p2p_scan_res_join(wpa_s, NULL);
5018 return;
5019 }
5020 wpabuf_put_buf(ies, wps_ie);
5021 wpabuf_free(wps_ie);
5022
5023 bands = wpas_get_bands(wpa_s, freqs);
5024 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5025
5026 params.p2p_probe = 1;
5027 params.extra_ies = wpabuf_head(ies);
5028 params.extra_ies_len = wpabuf_len(ies);
5029
5030 if (wpa_s->clear_driver_scan_cache) {
5031 wpa_printf(MSG_DEBUG,
5032 "Request driver to clear scan cache due to local BSS flush");
5033 params.only_new_results = 1;
5034 }
5035
5036 /*
5037 * Run a scan to update BSS table and start Provision Discovery once
5038 * the new scan results become available.
5039 */
5040 ret = wpa_drv_scan(wpa_s, ¶ms);
5041 if (!ret) {
5042 os_get_reltime(&wpa_s->scan_trigger_time);
5043 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5044 wpa_s->own_scan_requested = 1;
5045 wpa_s->clear_driver_scan_cache = 0;
5046 }
5047
5048 wpabuf_free(ies);
5049
5050 if (ret) {
5051 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5052 "try again later");
5053 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5054 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5055 wpas_p2p_check_join_scan_limit(wpa_s);
5056 }
5057 }
5058
5059
wpas_p2p_join_scan(void * eloop_ctx,void * timeout_ctx)5060 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5061 {
5062 struct wpa_supplicant *wpa_s = eloop_ctx;
5063 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5064 }
5065
5066
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)5067 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5068 const u8 *dev_addr, enum p2p_wps_method wps_method,
5069 int auto_join, int op_freq,
5070 const u8 *ssid, size_t ssid_len)
5071 {
5072 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5073 MACSTR " dev " MACSTR " op_freq=%d)%s",
5074 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5075 auto_join ? " (auto_join)" : "");
5076 if (ssid && ssid_len) {
5077 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5078 wpa_ssid_txt(ssid, ssid_len));
5079 }
5080
5081 wpa_s->p2p_auto_pd = 0;
5082 wpa_s->p2p_auto_join = !!auto_join;
5083 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5084 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5085 wpa_s->pending_join_wps_method = wps_method;
5086
5087 /* Make sure we are not running find during connection establishment */
5088 wpas_p2p_stop_find(wpa_s);
5089
5090 wpa_s->p2p_join_scan_count = 0;
5091 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5092 return 0;
5093 }
5094
5095
wpas_p2p_join_start(struct wpa_supplicant * wpa_s,int freq,const u8 * ssid,size_t ssid_len)5096 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5097 const u8 *ssid, size_t ssid_len)
5098 {
5099 struct wpa_supplicant *group;
5100 struct p2p_go_neg_results res;
5101 struct wpa_bss *bss;
5102
5103 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5104 if (group == NULL)
5105 return -1;
5106 if (group != wpa_s) {
5107 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5108 sizeof(group->p2p_pin));
5109 group->p2p_wps_method = wpa_s->p2p_wps_method;
5110 } else {
5111 /*
5112 * Need to mark the current interface for p2p_group_formation
5113 * when a separate group interface is not used. This is needed
5114 * to allow p2p_cancel stop a pending p2p_connect-join.
5115 * wpas_p2p_init_group_interface() addresses this for the case
5116 * where a separate group interface is used.
5117 */
5118 wpa_s->global->p2p_group_formation = wpa_s;
5119 }
5120
5121 group->p2p_in_provisioning = 1;
5122 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5123
5124 os_memset(&res, 0, sizeof(res));
5125 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5126 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5127 ETH_ALEN);
5128 res.wps_method = wpa_s->pending_join_wps_method;
5129 if (freq && ssid && ssid_len) {
5130 res.freq = freq;
5131 res.ssid_len = ssid_len;
5132 os_memcpy(res.ssid, ssid, ssid_len);
5133 } else {
5134 if (ssid && ssid_len) {
5135 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5136 ssid, ssid_len);
5137 } else {
5138 bss = wpa_bss_get_bssid_latest(
5139 wpa_s, wpa_s->pending_join_iface_addr);
5140 }
5141 if (bss) {
5142 res.freq = bss->freq;
5143 res.ssid_len = bss->ssid_len;
5144 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5145 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5146 bss->freq,
5147 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5148 } else if (ssid && ssid_len) {
5149 res.ssid_len = ssid_len;
5150 os_memcpy(res.ssid, ssid, ssid_len);
5151 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5152 wpa_ssid_txt(ssid, ssid_len));
5153 }
5154 }
5155
5156 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5157 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5158 "starting client");
5159 wpa_drv_cancel_remain_on_channel(wpa_s);
5160 wpa_s->off_channel_freq = 0;
5161 wpa_s->roc_waiting_drv_freq = 0;
5162 }
5163 wpas_start_wps_enrollee(group, &res);
5164
5165 /*
5166 * Allow a longer timeout for join-a-running-group than normal 15
5167 * second group formation timeout since the GO may not have authorized
5168 * our connection yet.
5169 */
5170 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5171 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5172 wpa_s, NULL);
5173
5174 return 0;
5175 }
5176
5177
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)5178 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5179 int *force_freq, int *pref_freq, int go,
5180 unsigned int *pref_freq_list,
5181 unsigned int *num_pref_freq)
5182 {
5183 struct wpa_used_freq_data *freqs;
5184 int res, best_freq, num_unused;
5185 unsigned int freq_in_use = 0, num, i, max_pref_freq;
5186
5187 max_pref_freq = *num_pref_freq;
5188 *num_pref_freq = 0;
5189
5190 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5191 sizeof(struct wpa_used_freq_data));
5192 if (!freqs)
5193 return -1;
5194
5195 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5196 wpa_s->num_multichan_concurrent);
5197
5198 /*
5199 * It is possible that the total number of used frequencies is bigger
5200 * than the number of frequencies used for P2P, so get the system wide
5201 * number of unused frequencies.
5202 */
5203 num_unused = wpas_p2p_num_unused_channels(wpa_s);
5204
5205 wpa_printf(MSG_DEBUG,
5206 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5207 freq, wpa_s->num_multichan_concurrent, num, num_unused);
5208
5209 if (freq > 0) {
5210 int ret;
5211 if (go)
5212 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5213 else
5214 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5215 if (!ret) {
5216 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5217 ieee80211_is_dfs(freq)) {
5218 /*
5219 * If freq is a DFS channel and DFS is offloaded
5220 * to the driver, allow P2P GO to use it.
5221 */
5222 wpa_printf(MSG_DEBUG,
5223 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5224 freq);
5225 } else {
5226 wpa_printf(MSG_DEBUG,
5227 "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5228 freq);
5229 res = -3;
5230 goto exit_free;
5231 }
5232 }
5233
5234 for (i = 0; i < num; i++) {
5235 if (freqs[i].freq == freq)
5236 freq_in_use = 1;
5237 }
5238
5239 if (num_unused <= 0 && !freq_in_use) {
5240 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5241 freq);
5242 res = -2;
5243 goto exit_free;
5244 }
5245 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5246 "requested channel (%u MHz)", freq);
5247 *force_freq = freq;
5248 goto exit_ok;
5249 }
5250
5251 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5252
5253 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5254 enum wpa_driver_if_type iface_type;
5255
5256 if (go)
5257 iface_type = WPA_IF_P2P_GO;
5258 else
5259 iface_type = WPA_IF_P2P_CLIENT;
5260
5261 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5262 best_freq, go);
5263
5264 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5265 &max_pref_freq,
5266 pref_freq_list);
5267 if (!res && max_pref_freq > 0) {
5268 *num_pref_freq = max_pref_freq;
5269 i = 0;
5270 while (i < *num_pref_freq &&
5271 (!p2p_supported_freq(wpa_s->global->p2p,
5272 pref_freq_list[i]) ||
5273 wpas_p2p_disallowed_freq(wpa_s->global,
5274 pref_freq_list[i]))) {
5275 wpa_printf(MSG_DEBUG,
5276 "P2P: preferred_freq_list[%d]=%d is disallowed",
5277 i, pref_freq_list[i]);
5278 i++;
5279 }
5280 if (i != *num_pref_freq) {
5281 best_freq = pref_freq_list[i];
5282 wpa_printf(MSG_DEBUG,
5283 "P2P: Using preferred_freq_list[%d]=%d",
5284 i, best_freq);
5285 } else {
5286 wpa_printf(MSG_DEBUG,
5287 "P2P: All driver preferred frequencies are disallowed for P2P use");
5288 *num_pref_freq = 0;
5289 }
5290 } else {
5291 wpa_printf(MSG_DEBUG,
5292 "P2P: No preferred frequency list available");
5293 }
5294 }
5295
5296 /* We have a candidate frequency to use */
5297 if (best_freq > 0) {
5298 if (*pref_freq == 0 && num_unused > 0) {
5299 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5300 best_freq);
5301 *pref_freq = best_freq;
5302 } else {
5303 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5304 best_freq);
5305 *force_freq = best_freq;
5306 }
5307 } else if (num_unused > 0) {
5308 wpa_printf(MSG_DEBUG,
5309 "P2P: Current operating channels are not available for P2P. Try to use another channel");
5310 *force_freq = 0;
5311 } else {
5312 wpa_printf(MSG_DEBUG,
5313 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5314 res = -2;
5315 goto exit_free;
5316 }
5317
5318 exit_ok:
5319 res = 0;
5320 exit_free:
5321 os_free(freqs);
5322 return res;
5323 }
5324
5325
5326 /**
5327 * wpas_p2p_connect - Request P2P Group Formation to be started
5328 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5329 * @peer_addr: Address of the peer P2P Device
5330 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5331 * @persistent_group: Whether to create a persistent group
5332 * @auto_join: Whether to select join vs. GO Negotiation automatically
5333 * @join: Whether to join an existing group (as a client) instead of starting
5334 * Group Owner negotiation; @peer_addr is BSSID in that case
5335 * @auth: Whether to only authorize the connection instead of doing that and
5336 * initiating Group Owner negotiation
5337 * @go_intent: GO Intent or -1 to use default
5338 * @freq: Frequency for the group or 0 for auto-selection
5339 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5340 * @persistent_id: Persistent group credentials to use for forcing GO
5341 * parameters or -1 to generate new values (SSID/passphrase)
5342 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5343 * interoperability workaround when initiating group formation
5344 * @ht40: Start GO with 40 MHz channel width
5345 * @vht: Start GO with VHT support
5346 * @vht_chwidth: Channel width supported by GO operating with VHT support
5347 * (VHT_CHANWIDTH_*).
5348 * @group_ssid: Specific Group SSID for join or %NULL if not set
5349 * @group_ssid_len: Length of @group_ssid in octets
5350 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5351 * failure, -2 on failure due to channel not currently available,
5352 * -3 if forced channel is not supported
5353 */
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,const u8 * group_ssid,size_t group_ssid_len)5354 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5355 const char *pin, enum p2p_wps_method wps_method,
5356 int persistent_group, int auto_join, int join, int auth,
5357 int go_intent, int freq, unsigned int vht_center_freq2,
5358 int persistent_id, int pd, int ht40, int vht,
5359 unsigned int vht_chwidth, const u8 *group_ssid,
5360 size_t group_ssid_len)
5361 {
5362 int force_freq = 0, pref_freq = 0;
5363 int ret = 0, res;
5364 enum wpa_driver_if_type iftype;
5365 const u8 *if_addr;
5366 struct wpa_ssid *ssid = NULL;
5367 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5368
5369 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5370 return -1;
5371
5372 if (persistent_id >= 0) {
5373 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5374 if (ssid == NULL || ssid->disabled != 2 ||
5375 ssid->mode != WPAS_MODE_P2P_GO)
5376 return -1;
5377 }
5378
5379 os_free(wpa_s->global->add_psk);
5380 wpa_s->global->add_psk = NULL;
5381
5382 wpa_s->global->p2p_fail_on_wps_complete = 0;
5383 wpa_s->global->pending_p2ps_group = 0;
5384 wpa_s->global->pending_p2ps_group_freq = 0;
5385 wpa_s->p2ps_method_config_any = 0;
5386
5387 if (go_intent < 0)
5388 go_intent = wpa_s->conf->p2p_go_intent;
5389
5390 if (!auth)
5391 wpa_s->p2p_long_listen = 0;
5392
5393 wpa_s->p2p_wps_method = wps_method;
5394 wpa_s->p2p_persistent_group = !!persistent_group;
5395 wpa_s->p2p_persistent_id = persistent_id;
5396 wpa_s->p2p_go_intent = go_intent;
5397 wpa_s->p2p_connect_freq = freq;
5398 wpa_s->p2p_fallback_to_go_neg = 0;
5399 wpa_s->p2p_pd_before_go_neg = !!pd;
5400 wpa_s->p2p_go_ht40 = !!ht40;
5401 wpa_s->p2p_go_vht = !!vht;
5402 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5403 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5404
5405 if (pin)
5406 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5407 else if (wps_method == WPS_PIN_DISPLAY) {
5408 if (wps_generate_pin((unsigned int *) &ret) < 0)
5409 return -1;
5410 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5411 "%08d", ret);
5412 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5413 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5414 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5415 wpa_s->p2p_pin);
5416 } else if (wps_method == WPS_P2PS) {
5417 /* Force the P2Ps default PIN to be used */
5418 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin));
5419 } else
5420 wpa_s->p2p_pin[0] = '\0';
5421
5422 if (join || auto_join) {
5423 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5424 if (auth) {
5425 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5426 "connect a running group from " MACSTR,
5427 MAC2STR(peer_addr));
5428 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5429 return ret;
5430 }
5431 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5432 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5433 iface_addr) < 0) {
5434 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5435 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5436 dev_addr);
5437 }
5438 if (auto_join) {
5439 os_get_reltime(&wpa_s->p2p_auto_started);
5440 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5441 "%ld.%06ld",
5442 wpa_s->p2p_auto_started.sec,
5443 wpa_s->p2p_auto_started.usec);
5444 }
5445 wpa_s->user_initiated_pd = 1;
5446 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5447 auto_join, freq,
5448 group_ssid, group_ssid_len) < 0)
5449 return -1;
5450 return ret;
5451 }
5452
5453 size = P2P_MAX_PREF_CHANNELS;
5454 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5455 go_intent == 15, pref_freq_list, &size);
5456 if (res)
5457 return res;
5458 wpas_p2p_set_own_freq_preference(wpa_s,
5459 force_freq ? force_freq : pref_freq);
5460
5461 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5462
5463 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5464
5465 if (wpa_s->create_p2p_iface) {
5466 /* Prepare to add a new interface for the group */
5467 iftype = WPA_IF_P2P_GROUP;
5468 if (go_intent == 15)
5469 iftype = WPA_IF_P2P_GO;
5470 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5471 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5472 "interface for the group");
5473 return -1;
5474 }
5475
5476 if_addr = wpa_s->pending_interface_addr;
5477 } else {
5478 if (wpa_s->p2p_mgmt)
5479 if_addr = wpa_s->parent->own_addr;
5480 else
5481 if_addr = wpa_s->own_addr;
5482 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5483 }
5484
5485 if (auth) {
5486 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5487 go_intent, if_addr,
5488 force_freq, persistent_group, ssid,
5489 pref_freq) < 0)
5490 return -1;
5491 return ret;
5492 }
5493
5494 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5495 go_intent, if_addr, force_freq,
5496 persistent_group, ssid, pref_freq) < 0) {
5497 if (wpa_s->create_p2p_iface)
5498 wpas_p2p_remove_pending_group_interface(wpa_s);
5499 return -1;
5500 }
5501 return ret;
5502 }
5503
5504
5505 /**
5506 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5507 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5508 * @freq: Frequency of the channel in MHz
5509 * @duration: Duration of the stay on the channel in milliseconds
5510 *
5511 * This callback is called when the driver indicates that it has started the
5512 * requested remain-on-channel duration.
5513 */
wpas_p2p_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq,unsigned int duration)5514 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5515 unsigned int freq, unsigned int duration)
5516 {
5517 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5518 return;
5519 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)",
5520 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5521 wpa_s->roc_waiting_drv_freq, freq, duration);
5522 if (wpa_s->off_channel_freq &&
5523 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5524 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5525 wpa_s->pending_listen_duration);
5526 wpa_s->pending_listen_freq = 0;
5527 } else {
5528 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5529 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5530 freq, duration);
5531 }
5532 }
5533
5534
wpas_p2p_listen_start(struct wpa_supplicant * wpa_s,unsigned int timeout)5535 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5536 {
5537 /* Limit maximum Listen state time based on driver limitation. */
5538 if (timeout > wpa_s->max_remain_on_chan)
5539 timeout = wpa_s->max_remain_on_chan;
5540
5541 return p2p_listen(wpa_s->global->p2p, timeout);
5542 }
5543
5544
5545 /**
5546 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5547 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5548 * @freq: Frequency of the channel in MHz
5549 *
5550 * This callback is called when the driver indicates that a remain-on-channel
5551 * operation has been completed, i.e., the duration on the requested channel
5552 * has timed out.
5553 */
wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant * wpa_s,unsigned int freq)5554 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5555 unsigned int freq)
5556 {
5557 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5558 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5559 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5560 wpas_p2p_listen_work_done(wpa_s);
5561 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5562 return;
5563 if (wpa_s->p2p_long_listen > 0)
5564 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5565 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5566 return; /* P2P module started a new operation */
5567 if (offchannel_pending_action_tx(wpa_s))
5568 return;
5569 if (wpa_s->p2p_long_listen > 0) {
5570 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5571 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5572 } else {
5573 /*
5574 * When listen duration is over, stop listen & update p2p_state
5575 * to IDLE.
5576 */
5577 p2p_stop_listen(wpa_s->global->p2p);
5578 }
5579 }
5580
5581
5582 /**
5583 * wpas_p2p_group_remove - Remove a P2P group
5584 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5585 * @ifname: Network interface name of the group interface or "*" to remove all
5586 * groups
5587 * Returns: 0 on success, -1 on failure
5588 *
5589 * This function is used to remove a P2P group. This can be used to disconnect
5590 * from a group in which the local end is a P2P Client or to end a P2P Group in
5591 * case the local end is the Group Owner. If a virtual network interface was
5592 * created for this group, that interface will be removed. Otherwise, only the
5593 * configured P2P group network will be removed from the interface.
5594 */
wpas_p2p_group_remove(struct wpa_supplicant * wpa_s,const char * ifname)5595 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5596 {
5597 struct wpa_global *global = wpa_s->global;
5598 struct wpa_supplicant *calling_wpa_s = wpa_s;
5599
5600 if (os_strcmp(ifname, "*") == 0) {
5601 struct wpa_supplicant *prev;
5602 wpa_s = global->ifaces;
5603 while (wpa_s) {
5604 prev = wpa_s;
5605 wpa_s = wpa_s->next;
5606 if (prev->p2p_group_interface !=
5607 NOT_P2P_GROUP_INTERFACE ||
5608 (prev->current_ssid &&
5609 prev->current_ssid->p2p_group))
5610 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5611 }
5612 return 0;
5613 }
5614
5615 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5616 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5617 break;
5618 }
5619
5620 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5621 }
5622
5623
wpas_p2p_select_go_freq(struct wpa_supplicant * wpa_s,int freq)5624 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5625 {
5626 unsigned int r;
5627
5628 if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5629 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5630 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5631 int res;
5632
5633 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5634 &size, pref_freq_list);
5635 if (!res && size > 0) {
5636 i = 0;
5637 while (i < size &&
5638 (!p2p_supported_freq(wpa_s->global->p2p,
5639 pref_freq_list[i]) ||
5640 wpas_p2p_disallowed_freq(wpa_s->global,
5641 pref_freq_list[i]))) {
5642 wpa_printf(MSG_DEBUG,
5643 "P2P: preferred_freq_list[%d]=%d is disallowed",
5644 i, pref_freq_list[i]);
5645 i++;
5646 }
5647 if (i != size) {
5648 freq = pref_freq_list[i];
5649 wpa_printf(MSG_DEBUG,
5650 "P2P: Using preferred_freq_list[%d]=%d",
5651 i, freq);
5652 } else {
5653 wpa_printf(MSG_DEBUG,
5654 "P2P: All driver preferred frequencies are disallowed for P2P use");
5655 }
5656 } else {
5657 wpa_printf(MSG_DEBUG,
5658 "P2P: No preferred frequency list available");
5659 }
5660 }
5661
5662 if (freq == 2) {
5663 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5664 "band");
5665 if (wpa_s->best_24_freq > 0 &&
5666 p2p_supported_freq_go(wpa_s->global->p2p,
5667 wpa_s->best_24_freq)) {
5668 freq = wpa_s->best_24_freq;
5669 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5670 "channel: %d MHz", freq);
5671 } else {
5672 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5673 return -1;
5674 freq = 2412 + (r % 3) * 25;
5675 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5676 "channel: %d MHz", freq);
5677 }
5678 }
5679
5680 if (freq == 5) {
5681 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5682 "band");
5683 if (wpa_s->best_5_freq > 0 &&
5684 p2p_supported_freq_go(wpa_s->global->p2p,
5685 wpa_s->best_5_freq)) {
5686 freq = wpa_s->best_5_freq;
5687 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5688 "channel: %d MHz", freq);
5689 } else {
5690 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5691 return -1;
5692 freq = 5180 + (r % 4) * 20;
5693 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5694 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5695 "5 GHz channel for P2P group");
5696 return -1;
5697 }
5698 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5699 "channel: %d MHz", freq);
5700 }
5701 }
5702
5703 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5704 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5705 ieee80211_is_dfs(freq)) {
5706 /*
5707 * If freq is a DFS channel and DFS is offloaded to the
5708 * driver, allow P2P GO to use it.
5709 */
5710 wpa_printf(MSG_DEBUG, "P2P: "
5711 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5712 __func__, freq);
5713 return freq;
5714 }
5715 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5716 "(%u MHz) is not supported for P2P uses",
5717 freq);
5718 return -1;
5719 }
5720
5721 return freq;
5722 }
5723
5724
wpas_p2p_supported_freq_go(struct wpa_supplicant * wpa_s,const struct p2p_channels * channels,int freq)5725 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5726 const struct p2p_channels *channels,
5727 int freq)
5728 {
5729 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5730 p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5731 freq_included(wpa_s, channels, freq))
5732 return 1;
5733 return 0;
5734 }
5735
5736
wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant * wpa_s,struct p2p_go_neg_results * params,const struct p2p_channels * channels)5737 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5738 struct p2p_go_neg_results *params,
5739 const struct p2p_channels *channels)
5740 {
5741 unsigned int i, r;
5742
5743 /* try all channels in operating class 115 */
5744 for (i = 0; i < 4; i++) {
5745 params->freq = 5180 + i * 20;
5746 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5747 freq_included(wpa_s, channels, params->freq) &&
5748 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5749 goto out;
5750 }
5751
5752 /* try all channels in operating class 124 */
5753 for (i = 0; i < 4; i++) {
5754 params->freq = 5745 + i * 20;
5755 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5756 freq_included(wpa_s, channels, params->freq) &&
5757 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5758 goto out;
5759 }
5760
5761 /* try social channel class 180 channel 2 */
5762 params->freq = 58320 + 1 * 2160;
5763 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5764 freq_included(wpa_s, channels, params->freq) &&
5765 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5766 goto out;
5767
5768 /* try all channels in reg. class 180 */
5769 for (i = 0; i < 4; i++) {
5770 params->freq = 58320 + i * 2160;
5771 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5772 freq_included(wpa_s, channels, params->freq) &&
5773 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5774 goto out;
5775 }
5776
5777 /* try some random selection of the social channels */
5778 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5779 return;
5780
5781 for (i = 0; i < 3; i++) {
5782 params->freq = 2412 + ((r + i) % 3) * 25;
5783 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5784 goto out;
5785 }
5786
5787 /* try all other channels in operating class 81 */
5788 for (i = 0; i < 11; i++) {
5789 params->freq = 2412 + i * 5;
5790
5791 /* skip social channels; covered in the previous loop */
5792 if (params->freq == 2412 ||
5793 params->freq == 2437 ||
5794 params->freq == 2462)
5795 continue;
5796
5797 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5798 goto out;
5799 }
5800
5801 params->freq = 0;
5802 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5803 return;
5804 out:
5805 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5806 params->freq);
5807 }
5808
5809
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,const struct p2p_channels * channels)5810 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5811 struct p2p_go_neg_results *params,
5812 int freq, int vht_center_freq2, int ht40,
5813 int vht, int max_oper_chwidth,
5814 const struct p2p_channels *channels)
5815 {
5816 struct wpa_used_freq_data *freqs;
5817 unsigned int cand;
5818 unsigned int num, i;
5819 int ignore_no_freqs = 0;
5820 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5821
5822 os_memset(params, 0, sizeof(*params));
5823 params->role_go = 1;
5824 params->ht40 = ht40;
5825 params->vht = vht;
5826 params->max_oper_chwidth = max_oper_chwidth;
5827 params->vht_center_freq2 = vht_center_freq2;
5828
5829 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5830 sizeof(struct wpa_used_freq_data));
5831 if (!freqs)
5832 return -1;
5833
5834 num = get_shared_radio_freqs_data(wpa_s, freqs,
5835 wpa_s->num_multichan_concurrent);
5836
5837 if (wpa_s->current_ssid &&
5838 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5839 wpa_s->wpa_state == WPA_COMPLETED) {
5840 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5841 __func__);
5842
5843 /*
5844 * If the frequency selection is done for an active P2P GO that
5845 * is not sharing a frequency, allow to select a new frequency
5846 * even if there are no unused frequencies as we are about to
5847 * move the P2P GO so its frequency can be re-used.
5848 */
5849 for (i = 0; i < num; i++) {
5850 if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5851 freqs[i].flags == 0) {
5852 ignore_no_freqs = 1;
5853 break;
5854 }
5855 }
5856 }
5857
5858 /* try using the forced freq */
5859 if (freq) {
5860 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) ||
5861 !freq_included(wpa_s, channels, freq)) {
5862 wpa_printf(MSG_DEBUG,
5863 "P2P: Forced GO freq %d MHz disallowed",
5864 freq);
5865 goto fail;
5866 }
5867 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5868 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5869 ieee80211_is_dfs(freq)) {
5870 /*
5871 * If freq is a DFS channel and DFS is offloaded
5872 * to the driver, allow P2P GO to use it.
5873 */
5874 wpa_printf(MSG_DEBUG,
5875 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded",
5876 __func__, freq);
5877 } else {
5878 wpa_printf(MSG_DEBUG,
5879 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses",
5880 freq);
5881 goto fail;
5882 }
5883 }
5884
5885 for (i = 0; i < num; i++) {
5886 if (freqs[i].freq == freq) {
5887 wpa_printf(MSG_DEBUG,
5888 "P2P: forced freq (%d MHz) is also shared",
5889 freq);
5890 params->freq = freq;
5891 goto success;
5892 }
5893 }
5894
5895 if (!ignore_no_freqs && !unused_channels) {
5896 wpa_printf(MSG_DEBUG,
5897 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5898 freq);
5899 goto fail;
5900 }
5901
5902 wpa_printf(MSG_DEBUG,
5903 "P2P: force GO freq (%d MHz) on a free channel",
5904 freq);
5905 params->freq = freq;
5906 goto success;
5907 }
5908
5909 /* consider using one of the shared frequencies */
5910 if (num &&
5911 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5912 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5913 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5914 wpa_printf(MSG_DEBUG,
5915 "P2P: Use shared freq (%d MHz) for GO",
5916 cand);
5917 params->freq = cand;
5918 goto success;
5919 }
5920
5921 /* try using one of the shared freqs */
5922 for (i = 0; i < num; i++) {
5923 if (wpas_p2p_supported_freq_go(wpa_s, channels,
5924 freqs[i].freq)) {
5925 wpa_printf(MSG_DEBUG,
5926 "P2P: Use shared freq (%d MHz) for GO",
5927 freqs[i].freq);
5928 params->freq = freqs[i].freq;
5929 goto success;
5930 }
5931 }
5932 }
5933
5934 if (!ignore_no_freqs && !unused_channels) {
5935 wpa_printf(MSG_DEBUG,
5936 "P2P: Cannot force GO on any of the channels we are already using");
5937 goto fail;
5938 }
5939
5940 /* try using the setting from the configuration file */
5941 if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5942 wpa_s->conf->p2p_oper_channel >= 1 &&
5943 wpa_s->conf->p2p_oper_channel <= 11 &&
5944 wpas_p2p_supported_freq_go(
5945 wpa_s, channels,
5946 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5947 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5948 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5949 "frequency %d MHz", params->freq);
5950 goto success;
5951 }
5952
5953 if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5954 wpa_s->conf->p2p_oper_reg_class == 116 ||
5955 wpa_s->conf->p2p_oper_reg_class == 117 ||
5956 wpa_s->conf->p2p_oper_reg_class == 124 ||
5957 wpa_s->conf->p2p_oper_reg_class == 125 ||
5958 wpa_s->conf->p2p_oper_reg_class == 126 ||
5959 wpa_s->conf->p2p_oper_reg_class == 127) &&
5960 wpas_p2p_supported_freq_go(wpa_s, channels,
5961 5000 +
5962 5 * wpa_s->conf->p2p_oper_channel)) {
5963 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5964 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5965 "frequency %d MHz", params->freq);
5966 goto success;
5967 }
5968
5969 /* Try using best channels */
5970 if (wpa_s->conf->p2p_oper_channel == 0 &&
5971 wpa_s->best_overall_freq > 0 &&
5972 wpas_p2p_supported_freq_go(wpa_s, channels,
5973 wpa_s->best_overall_freq)) {
5974 params->freq = wpa_s->best_overall_freq;
5975 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5976 "channel %d MHz", params->freq);
5977 goto success;
5978 }
5979
5980 if (wpa_s->conf->p2p_oper_channel == 0 &&
5981 wpa_s->best_24_freq > 0 &&
5982 wpas_p2p_supported_freq_go(wpa_s, channels,
5983 wpa_s->best_24_freq)) {
5984 params->freq = wpa_s->best_24_freq;
5985 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5986 "channel %d MHz", params->freq);
5987 goto success;
5988 }
5989
5990 if (wpa_s->conf->p2p_oper_channel == 0 &&
5991 wpa_s->best_5_freq > 0 &&
5992 wpas_p2p_supported_freq_go(wpa_s, channels,
5993 wpa_s->best_5_freq)) {
5994 params->freq = wpa_s->best_5_freq;
5995 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5996 "channel %d MHz", params->freq);
5997 goto success;
5998 }
5999
6000 /* try using preferred channels */
6001 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
6002 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6003 params->freq = cand;
6004 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6005 "channels", params->freq);
6006 goto success;
6007 }
6008
6009 /* Try using one of the group common freqs */
6010 if (wpa_s->p2p_group_common_freqs) {
6011 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6012 cand = wpa_s->p2p_group_common_freqs[i];
6013 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6014 params->freq = cand;
6015 wpa_printf(MSG_DEBUG,
6016 "P2P: Use freq %d MHz common with the peer",
6017 params->freq);
6018 goto success;
6019 }
6020 }
6021 }
6022
6023 /* no preference, select some channel */
6024 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
6025
6026 if (params->freq == 0) {
6027 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
6028 goto fail;
6029 }
6030
6031 success:
6032 os_free(freqs);
6033 return 0;
6034 fail:
6035 os_free(freqs);
6036 return -1;
6037 }
6038
6039
6040 static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant * wpa_s,int addr_allocated,int go)6041 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6042 int go)
6043 {
6044 struct wpa_supplicant *group_wpa_s;
6045
6046 if (!wpas_p2p_create_iface(wpa_s)) {
6047 if (wpa_s->p2p_mgmt) {
6048 /*
6049 * We may be called on the p2p_dev interface which
6050 * cannot be used for group operations, so always use
6051 * the primary interface.
6052 */
6053 wpa_s->parent->p2pdev = wpa_s;
6054 wpa_s = wpa_s->parent;
6055 }
6056 wpa_dbg(wpa_s, MSG_DEBUG,
6057 "P2P: Use primary interface for group operations");
6058 wpa_s->p2p_first_connection_timeout = 0;
6059 if (wpa_s != wpa_s->p2pdev)
6060 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6061 return wpa_s;
6062 }
6063
6064 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6065 WPA_IF_P2P_CLIENT) < 0) {
6066 wpa_msg_global(wpa_s, MSG_ERROR,
6067 "P2P: Failed to add group interface");
6068 return NULL;
6069 }
6070 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6071 if (group_wpa_s == NULL) {
6072 wpa_msg_global(wpa_s, MSG_ERROR,
6073 "P2P: Failed to initialize group interface");
6074 wpas_p2p_remove_pending_group_interface(wpa_s);
6075 return NULL;
6076 }
6077
6078 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6079 group_wpa_s->ifname);
6080 group_wpa_s->p2p_first_connection_timeout = 0;
6081 return group_wpa_s;
6082 }
6083
6084
6085 /**
6086 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6087 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6088 * @persistent_group: Whether to create a persistent group
6089 * @freq: Frequency for the group or 0 to indicate no hardcoding
6090 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6091 * @ht40: Start GO with 40 MHz channel width
6092 * @vht: Start GO with VHT support
6093 * @vht_chwidth: channel bandwidth for GO operating with VHT support
6094 * Returns: 0 on success, -1 on failure
6095 *
6096 * This function creates a new P2P group with the local end as the Group Owner,
6097 * i.e., without using Group Owner Negotiation.
6098 */
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)6099 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6100 int freq, int vht_center_freq2, int ht40, int vht,
6101 int max_oper_chwidth)
6102 {
6103 struct p2p_go_neg_results params;
6104
6105 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6106 return -1;
6107
6108 os_free(wpa_s->global->add_psk);
6109 wpa_s->global->add_psk = NULL;
6110
6111 /* Make sure we are not running find during connection establishment */
6112 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6113 wpas_p2p_stop_find_oper(wpa_s);
6114
6115 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6116 if (freq < 0)
6117 return -1;
6118
6119 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2,
6120 ht40, vht, max_oper_chwidth, NULL))
6121 return -1;
6122
6123 p2p_go_params(wpa_s->global->p2p, ¶ms);
6124 params.persistent_group = persistent_group;
6125
6126 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6127 if (wpa_s == NULL)
6128 return -1;
6129 wpas_start_wps_go(wpa_s, ¶ms, 0);
6130
6131 return 0;
6132 }
6133
6134
wpas_start_p2p_client(struct wpa_supplicant * wpa_s,struct wpa_ssid * params,int addr_allocated,int freq,int force_scan)6135 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6136 struct wpa_ssid *params, int addr_allocated,
6137 int freq, int force_scan)
6138 {
6139 struct wpa_ssid *ssid;
6140
6141 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6142 if (wpa_s == NULL)
6143 return -1;
6144 if (force_scan)
6145 os_get_reltime(&wpa_s->scan_min_time);
6146 wpa_s->p2p_last_4way_hs_fail = NULL;
6147
6148 wpa_supplicant_ap_deinit(wpa_s);
6149
6150 ssid = wpa_config_add_network(wpa_s->conf);
6151 if (ssid == NULL)
6152 return -1;
6153 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6154 wpa_config_set_network_defaults(ssid);
6155 ssid->temporary = 1;
6156 ssid->proto = WPA_PROTO_RSN;
6157 ssid->pbss = params->pbss;
6158 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6159 WPA_CIPHER_CCMP;
6160 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6161 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6162 ssid->ssid = os_malloc(params->ssid_len);
6163 if (ssid->ssid == NULL) {
6164 wpa_config_remove_network(wpa_s->conf, ssid->id);
6165 return -1;
6166 }
6167 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6168 ssid->ssid_len = params->ssid_len;
6169 ssid->p2p_group = 1;
6170 ssid->export_keys = 1;
6171 if (params->psk_set) {
6172 os_memcpy(ssid->psk, params->psk, 32);
6173 ssid->psk_set = 1;
6174 }
6175 if (params->passphrase)
6176 ssid->passphrase = os_strdup(params->passphrase);
6177
6178 wpa_s->show_group_started = 1;
6179 wpa_s->p2p_in_invitation = 1;
6180 wpa_s->p2p_invite_go_freq = freq;
6181 wpa_s->p2p_go_group_formation_completed = 0;
6182 wpa_s->global->p2p_group_formation = wpa_s;
6183
6184 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6185 NULL);
6186 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6187 wpas_p2p_group_formation_timeout,
6188 wpa_s->p2pdev, NULL);
6189 wpa_supplicant_select_network(wpa_s, ssid);
6190
6191 return 0;
6192 }
6193
6194
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,const struct p2p_channels * channels,int connection_timeout,int force_scan)6195 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6196 struct wpa_ssid *ssid, int addr_allocated,
6197 int force_freq, int neg_freq,
6198 int vht_center_freq2, int ht40,
6199 int vht, int max_oper_chwidth,
6200 const struct p2p_channels *channels,
6201 int connection_timeout, int force_scan)
6202 {
6203 struct p2p_go_neg_results params;
6204 int go = 0, freq;
6205
6206 if (ssid->disabled != 2 || ssid->ssid == NULL)
6207 return -1;
6208
6209 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6210 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6211 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6212 "already running");
6213 if (go == 0 &&
6214 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6215 wpa_s->p2pdev, NULL)) {
6216 /*
6217 * This can happen if Invitation Response frame was lost
6218 * and the peer (GO of a persistent group) tries to
6219 * invite us again. Reschedule the timeout to avoid
6220 * terminating the wait for the connection too early
6221 * since we now know that the peer is still trying to
6222 * invite us instead of having already started the GO.
6223 */
6224 wpa_printf(MSG_DEBUG,
6225 "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6226 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6227 wpas_p2p_group_formation_timeout,
6228 wpa_s->p2pdev, NULL);
6229 }
6230 return 0;
6231 }
6232
6233 os_free(wpa_s->global->add_psk);
6234 wpa_s->global->add_psk = NULL;
6235
6236 /* Make sure we are not running find during connection establishment */
6237 wpas_p2p_stop_find_oper(wpa_s);
6238
6239 wpa_s->p2p_fallback_to_go_neg = 0;
6240
6241 if (ssid->mode == WPAS_MODE_P2P_GO) {
6242 if (force_freq > 0) {
6243 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6244 if (freq < 0)
6245 return -1;
6246 } else {
6247 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6248 if (freq < 0 ||
6249 (freq > 0 && !freq_included(wpa_s, channels, freq)))
6250 freq = 0;
6251 }
6252 } else if (ssid->mode == WPAS_MODE_INFRA) {
6253 freq = neg_freq;
6254 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6255 struct os_reltime now;
6256 struct wpa_bss *bss =
6257 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6258
6259 os_get_reltime(&now);
6260 if (bss &&
6261 !os_reltime_expired(&now, &bss->last_update, 5) &&
6262 freq_included(wpa_s, channels, bss->freq))
6263 freq = bss->freq;
6264 else
6265 freq = 0;
6266 }
6267
6268 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6269 force_scan);
6270 } else {
6271 return -1;
6272 }
6273
6274 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2,
6275 ht40, vht, max_oper_chwidth, channels))
6276 return -1;
6277
6278 params.role_go = 1;
6279 params.psk_set = ssid->psk_set;
6280 if (params.psk_set)
6281 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6282 if (ssid->passphrase) {
6283 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6284 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6285 "persistent group");
6286 return -1;
6287 }
6288 os_strlcpy(params.passphrase, ssid->passphrase,
6289 sizeof(params.passphrase));
6290 }
6291 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6292 params.ssid_len = ssid->ssid_len;
6293 params.persistent_group = 1;
6294
6295 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6296 if (wpa_s == NULL)
6297 return -1;
6298
6299 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6300
6301 wpa_s->p2p_first_connection_timeout = connection_timeout;
6302 wpas_start_wps_go(wpa_s, ¶ms, 0);
6303
6304 return 0;
6305 }
6306
6307
wpas_p2p_ie_update(void * ctx,struct wpabuf * beacon_ies,struct wpabuf * proberesp_ies)6308 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6309 struct wpabuf *proberesp_ies)
6310 {
6311 struct wpa_supplicant *wpa_s = ctx;
6312 if (wpa_s->ap_iface) {
6313 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6314 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6315 wpabuf_free(beacon_ies);
6316 wpabuf_free(proberesp_ies);
6317 return;
6318 }
6319 if (beacon_ies) {
6320 wpabuf_free(hapd->p2p_beacon_ie);
6321 hapd->p2p_beacon_ie = beacon_ies;
6322 }
6323 wpabuf_free(hapd->p2p_probe_resp_ie);
6324 hapd->p2p_probe_resp_ie = proberesp_ies;
6325 } else {
6326 wpabuf_free(beacon_ies);
6327 wpabuf_free(proberesp_ies);
6328 }
6329 wpa_supplicant_ap_update_beacon(wpa_s);
6330 }
6331
6332
wpas_p2p_idle_update(void * ctx,int idle)6333 static void wpas_p2p_idle_update(void *ctx, int idle)
6334 {
6335 struct wpa_supplicant *wpa_s = ctx;
6336 if (!wpa_s->ap_iface)
6337 return;
6338 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6339 if (idle) {
6340 if (wpa_s->global->p2p_fail_on_wps_complete &&
6341 wpa_s->p2p_in_provisioning) {
6342 wpas_p2p_grpform_fail_after_wps(wpa_s);
6343 return;
6344 }
6345 wpas_p2p_set_group_idle_timeout(wpa_s);
6346 } else
6347 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6348 }
6349
6350
wpas_p2p_group_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)6351 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6352 struct wpa_ssid *ssid)
6353 {
6354 struct p2p_group *group;
6355 struct p2p_group_config *cfg;
6356
6357 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6358 !ssid->p2p_group)
6359 return NULL;
6360
6361 cfg = os_zalloc(sizeof(*cfg));
6362 if (cfg == NULL)
6363 return NULL;
6364
6365 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6366 cfg->persistent_group = 2;
6367 else if (ssid->p2p_persistent_group)
6368 cfg->persistent_group = 1;
6369 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6370 if (wpa_s->max_stations &&
6371 wpa_s->max_stations < wpa_s->conf->max_num_sta)
6372 cfg->max_clients = wpa_s->max_stations;
6373 else
6374 cfg->max_clients = wpa_s->conf->max_num_sta;
6375 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6376 cfg->ssid_len = ssid->ssid_len;
6377 cfg->freq = ssid->frequency;
6378 cfg->cb_ctx = wpa_s;
6379 cfg->ie_update = wpas_p2p_ie_update;
6380 cfg->idle_update = wpas_p2p_idle_update;
6381 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6382 != 0;
6383
6384 group = p2p_group_init(wpa_s->global->p2p, cfg);
6385 if (group == NULL)
6386 os_free(cfg);
6387 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6388 p2p_group_notif_formation_done(group);
6389 wpa_s->p2p_group = group;
6390 return group;
6391 }
6392
6393
wpas_p2p_wps_success(struct wpa_supplicant * wpa_s,const u8 * peer_addr,int registrar)6394 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6395 int registrar)
6396 {
6397 struct wpa_ssid *ssid = wpa_s->current_ssid;
6398
6399 if (!wpa_s->p2p_in_provisioning) {
6400 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6401 "provisioning not in progress");
6402 return;
6403 }
6404
6405 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6406 u8 go_dev_addr[ETH_ALEN];
6407 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6408 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6409 ssid->ssid_len);
6410 /* Clear any stored provisioning info */
6411 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6412 }
6413
6414 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6415 NULL);
6416 wpa_s->p2p_go_group_formation_completed = 1;
6417 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6418 /*
6419 * Use a separate timeout for initial data connection to
6420 * complete to allow the group to be removed automatically if
6421 * something goes wrong in this step before the P2P group idle
6422 * timeout mechanism is taken into use.
6423 */
6424 wpa_dbg(wpa_s, MSG_DEBUG,
6425 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6426 P2P_MAX_INITIAL_CONN_WAIT);
6427 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6428 wpas_p2p_group_formation_timeout,
6429 wpa_s->p2pdev, NULL);
6430 /* Complete group formation on successful data connection. */
6431 wpa_s->p2p_go_group_formation_completed = 0;
6432 } else if (ssid) {
6433 /*
6434 * Use a separate timeout for initial data connection to
6435 * complete to allow the group to be removed automatically if
6436 * the client does not complete data connection successfully.
6437 */
6438 wpa_dbg(wpa_s, MSG_DEBUG,
6439 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6440 P2P_MAX_INITIAL_CONN_WAIT_GO);
6441 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6442 wpas_p2p_group_formation_timeout,
6443 wpa_s->p2pdev, NULL);
6444 /*
6445 * Complete group formation on first successful data connection
6446 */
6447 wpa_s->p2p_go_group_formation_completed = 0;
6448 }
6449 if (wpa_s->global->p2p)
6450 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6451 wpas_group_formation_completed(wpa_s, 1, 0);
6452 }
6453
6454
wpas_p2p_wps_failed(struct wpa_supplicant * wpa_s,struct wps_event_fail * fail)6455 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6456 struct wps_event_fail *fail)
6457 {
6458 if (!wpa_s->p2p_in_provisioning) {
6459 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6460 "provisioning not in progress");
6461 return;
6462 }
6463
6464 if (wpa_s->go_params) {
6465 p2p_clear_provisioning_info(
6466 wpa_s->global->p2p,
6467 wpa_s->go_params->peer_device_addr);
6468 }
6469
6470 wpas_notify_p2p_wps_failed(wpa_s, fail);
6471
6472 if (wpa_s == wpa_s->global->p2p_group_formation) {
6473 /*
6474 * Allow some time for the failed WPS negotiation exchange to
6475 * complete, but remove the group since group formation cannot
6476 * succeed after provisioning failure.
6477 */
6478 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6479 wpa_s->global->p2p_fail_on_wps_complete = 1;
6480 eloop_deplete_timeout(0, 50000,
6481 wpas_p2p_group_formation_timeout,
6482 wpa_s->p2pdev, NULL);
6483 }
6484 }
6485
6486
wpas_p2p_wps_eapol_cb(struct wpa_supplicant * wpa_s)6487 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6488 {
6489 if (!wpa_s->global->p2p_fail_on_wps_complete ||
6490 !wpa_s->p2p_in_provisioning)
6491 return 0;
6492
6493 wpas_p2p_grpform_fail_after_wps(wpa_s);
6494
6495 return 1;
6496 }
6497
6498
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)6499 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6500 const char *config_method,
6501 enum wpas_p2p_prov_disc_use use,
6502 struct p2ps_provision *p2ps_prov)
6503 {
6504 u16 config_methods;
6505
6506 wpa_s->global->pending_p2ps_group = 0;
6507 wpa_s->global->pending_p2ps_group_freq = 0;
6508 wpa_s->p2p_fallback_to_go_neg = 0;
6509 wpa_s->pending_pd_use = NORMAL_PD;
6510 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6511 p2ps_prov->conncap = p2ps_group_capability(
6512 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6513 &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6514
6515 wpa_printf(MSG_DEBUG,
6516 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6517 __func__, p2ps_prov->conncap,
6518 p2ps_prov->adv_id, p2ps_prov->conncap,
6519 p2ps_prov->status, p2ps_prov->info);
6520
6521 config_methods = 0;
6522 } else if (os_strncmp(config_method, "display", 7) == 0)
6523 config_methods = WPS_CONFIG_DISPLAY;
6524 else if (os_strncmp(config_method, "keypad", 6) == 0)
6525 config_methods = WPS_CONFIG_KEYPAD;
6526 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6527 os_strncmp(config_method, "pushbutton", 10) == 0)
6528 config_methods = WPS_CONFIG_PUSHBUTTON;
6529 else {
6530 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6531 os_free(p2ps_prov);
6532 return -1;
6533 }
6534
6535 if (use == WPAS_P2P_PD_AUTO) {
6536 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6537 wpa_s->pending_pd_config_methods = config_methods;
6538 wpa_s->p2p_auto_pd = 1;
6539 wpa_s->p2p_auto_join = 0;
6540 wpa_s->pending_pd_before_join = 0;
6541 wpa_s->auto_pd_scan_retry = 0;
6542 wpas_p2p_stop_find(wpa_s);
6543 wpa_s->p2p_join_scan_count = 0;
6544 os_get_reltime(&wpa_s->p2p_auto_started);
6545 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6546 wpa_s->p2p_auto_started.sec,
6547 wpa_s->p2p_auto_started.usec);
6548 wpas_p2p_join_scan(wpa_s, NULL);
6549 return 0;
6550 }
6551
6552 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6553 os_free(p2ps_prov);
6554 return -1;
6555 }
6556
6557 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6558 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6559 0, 1);
6560 }
6561
6562
wpas_p2p_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)6563 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6564 char *end)
6565 {
6566 return p2p_scan_result_text(ies, ies_len, buf, end);
6567 }
6568
6569
wpas_p2p_clear_pending_action_tx(struct wpa_supplicant * wpa_s)6570 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6571 {
6572 if (!offchannel_pending_action_tx(wpa_s))
6573 return;
6574
6575 if (wpa_s->p2p_send_action_work) {
6576 wpas_p2p_free_send_action_work(wpa_s);
6577 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6578 wpa_s, NULL);
6579 offchannel_send_action_done(wpa_s);
6580 }
6581
6582 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6583 "operation request");
6584 offchannel_clear_pending_action_tx(wpa_s);
6585 }
6586
6587
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)6588 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6589 enum p2p_discovery_type type,
6590 unsigned int num_req_dev_types, const u8 *req_dev_types,
6591 const u8 *dev_id, unsigned int search_delay,
6592 u8 seek_cnt, const char **seek_string, int freq)
6593 {
6594 wpas_p2p_clear_pending_action_tx(wpa_s);
6595 wpa_s->p2p_long_listen = 0;
6596
6597 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6598 wpa_s->p2p_in_provisioning) {
6599 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s",
6600 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ?
6601 " (P2P disabled)" : "",
6602 wpa_s->p2p_in_provisioning ?
6603 " (p2p_in_provisioning)" : "");
6604 return -1;
6605 }
6606
6607 wpa_supplicant_cancel_sched_scan(wpa_s);
6608
6609 return p2p_find(wpa_s->global->p2p, timeout, type,
6610 num_req_dev_types, req_dev_types, dev_id,
6611 search_delay, seek_cnt, seek_string, freq);
6612 }
6613
6614
wpas_p2p_scan_res_ignore_search(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)6615 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6616 struct wpa_scan_results *scan_res)
6617 {
6618 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6619
6620 if (wpa_s->p2p_scan_work) {
6621 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6622 wpa_s->p2p_scan_work = NULL;
6623 radio_work_done(work);
6624 }
6625
6626 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6627 return;
6628
6629 /*
6630 * Indicate that results have been processed so that the P2P module can
6631 * continue pending tasks.
6632 */
6633 p2p_scan_res_handled(wpa_s->global->p2p);
6634 }
6635
6636
wpas_p2p_stop_find_oper(struct wpa_supplicant * wpa_s)6637 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6638 {
6639 wpas_p2p_clear_pending_action_tx(wpa_s);
6640 wpa_s->p2p_long_listen = 0;
6641 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6642 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6643
6644 if (wpa_s->global->p2p)
6645 p2p_stop_find(wpa_s->global->p2p);
6646
6647 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6648 wpa_printf(MSG_DEBUG,
6649 "P2P: Do not consider the scan results after stop_find");
6650 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6651 }
6652 }
6653
6654
wpas_p2p_stop_find(struct wpa_supplicant * wpa_s)6655 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6656 {
6657 wpas_p2p_stop_find_oper(wpa_s);
6658 if (!wpa_s->global->pending_group_iface_for_p2ps)
6659 wpas_p2p_remove_pending_group_interface(wpa_s);
6660 }
6661
6662
wpas_p2p_long_listen_timeout(void * eloop_ctx,void * timeout_ctx)6663 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6664 {
6665 struct wpa_supplicant *wpa_s = eloop_ctx;
6666 wpa_s->p2p_long_listen = 0;
6667 }
6668
6669
wpas_p2p_listen(struct wpa_supplicant * wpa_s,unsigned int timeout)6670 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6671 {
6672 int res;
6673
6674 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6675 return -1;
6676
6677 if (wpa_s->p2p_lo_started) {
6678 wpa_printf(MSG_DEBUG,
6679 "P2P: Cannot start P2P listen, it is offloaded");
6680 return -1;
6681 }
6682
6683 wpa_supplicant_cancel_sched_scan(wpa_s);
6684 wpas_p2p_clear_pending_action_tx(wpa_s);
6685
6686 if (timeout == 0) {
6687 /*
6688 * This is a request for unlimited Listen state. However, at
6689 * least for now, this is mapped to a Listen state for one
6690 * hour.
6691 */
6692 timeout = 3600;
6693 }
6694 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6695 wpa_s->p2p_long_listen = 0;
6696
6697 /*
6698 * Stop previous find/listen operation to avoid trying to request a new
6699 * remain-on-channel operation while the driver is still running the
6700 * previous one.
6701 */
6702 if (wpa_s->global->p2p)
6703 p2p_stop_find(wpa_s->global->p2p);
6704
6705 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6706 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6707 wpa_s->p2p_long_listen = timeout * 1000;
6708 eloop_register_timeout(timeout, 0,
6709 wpas_p2p_long_listen_timeout,
6710 wpa_s, NULL);
6711 }
6712
6713 return res;
6714 }
6715
6716
wpas_p2p_assoc_req_ie(struct wpa_supplicant * wpa_s,struct wpa_bss * bss,u8 * buf,size_t len,int p2p_group)6717 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6718 u8 *buf, size_t len, int p2p_group)
6719 {
6720 struct wpabuf *p2p_ie;
6721 int ret;
6722
6723 if (wpa_s->global->p2p_disabled)
6724 return -1;
6725 /*
6726 * Advertize mandatory cross connection capability even on
6727 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6728 */
6729 if (wpa_s->conf->p2p_disabled && p2p_group)
6730 return -1;
6731 if (wpa_s->global->p2p == NULL)
6732 return -1;
6733 if (bss == NULL)
6734 return -1;
6735
6736 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6737 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6738 p2p_group, p2p_ie);
6739 wpabuf_free(p2p_ie);
6740
6741 return ret;
6742 }
6743
6744
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)6745 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6746 const u8 *dst, const u8 *bssid,
6747 const u8 *ie, size_t ie_len,
6748 unsigned int rx_freq, int ssi_signal)
6749 {
6750 if (wpa_s->global->p2p_disabled)
6751 return 0;
6752 if (wpa_s->global->p2p == NULL)
6753 return 0;
6754
6755 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6756 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6757 case P2P_PREQ_NOT_P2P:
6758 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6759 ssi_signal);
6760 /* fall through */
6761 case P2P_PREQ_MALFORMED:
6762 case P2P_PREQ_NOT_LISTEN:
6763 case P2P_PREQ_NOT_PROCESSED:
6764 default: /* make gcc happy */
6765 return 0;
6766 case P2P_PREQ_PROCESSED:
6767 return 1;
6768 }
6769 }
6770
6771
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)6772 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6773 const u8 *sa, const u8 *bssid,
6774 u8 category, const u8 *data, size_t len, int freq)
6775 {
6776 if (wpa_s->global->p2p_disabled)
6777 return;
6778 if (wpa_s->global->p2p == NULL)
6779 return;
6780
6781 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6782 freq);
6783 }
6784
6785
wpas_p2p_scan_ie(struct wpa_supplicant * wpa_s,struct wpabuf * ies)6786 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6787 {
6788 unsigned int bands;
6789
6790 if (wpa_s->global->p2p_disabled)
6791 return;
6792 if (wpa_s->global->p2p == NULL)
6793 return;
6794
6795 bands = wpas_get_bands(wpa_s, NULL);
6796 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6797 }
6798
6799
wpas_p2p_group_deinit(struct wpa_supplicant * wpa_s)6800 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6801 {
6802 p2p_group_deinit(wpa_s->p2p_group);
6803 wpa_s->p2p_group = NULL;
6804
6805 wpa_s->ap_configured_cb = NULL;
6806 wpa_s->ap_configured_cb_ctx = NULL;
6807 wpa_s->ap_configured_cb_data = NULL;
6808 wpa_s->connect_without_scan = NULL;
6809 }
6810
6811
wpas_p2p_reject(struct wpa_supplicant * wpa_s,const u8 * addr)6812 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6813 {
6814 wpa_s->p2p_long_listen = 0;
6815
6816 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6817 return -1;
6818
6819 return p2p_reject(wpa_s->global->p2p, addr);
6820 }
6821
6822
6823 /* 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)6824 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6825 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6826 int vht_center_freq2, int ht40, int vht, int max_chwidth,
6827 int pref_freq)
6828 {
6829 enum p2p_invite_role role;
6830 u8 *bssid = NULL;
6831 int force_freq = 0;
6832 int res;
6833 int no_pref_freq_given = pref_freq == 0;
6834 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6835
6836 wpa_s->global->p2p_invite_group = NULL;
6837 if (peer_addr)
6838 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6839 else
6840 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6841
6842 wpa_s->p2p_persistent_go_freq = freq;
6843 wpa_s->p2p_go_ht40 = !!ht40;
6844 wpa_s->p2p_go_vht = !!vht;
6845 wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6846 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6847 if (ssid->mode == WPAS_MODE_P2P_GO) {
6848 role = P2P_INVITE_ROLE_GO;
6849 if (peer_addr == NULL) {
6850 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6851 "address in invitation command");
6852 return -1;
6853 }
6854 if (wpas_p2p_create_iface(wpa_s)) {
6855 if (wpas_p2p_add_group_interface(wpa_s,
6856 WPA_IF_P2P_GO) < 0) {
6857 wpa_printf(MSG_ERROR, "P2P: Failed to "
6858 "allocate a new interface for the "
6859 "group");
6860 return -1;
6861 }
6862 bssid = wpa_s->pending_interface_addr;
6863 } else if (wpa_s->p2p_mgmt)
6864 bssid = wpa_s->parent->own_addr;
6865 else
6866 bssid = wpa_s->own_addr;
6867 } else {
6868 role = P2P_INVITE_ROLE_CLIENT;
6869 peer_addr = ssid->bssid;
6870 }
6871 wpa_s->pending_invite_ssid_id = ssid->id;
6872
6873 size = P2P_MAX_PREF_CHANNELS;
6874 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6875 role == P2P_INVITE_ROLE_GO,
6876 pref_freq_list, &size);
6877 if (res)
6878 return res;
6879
6880 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6881 return -1;
6882
6883 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6884
6885 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6886 no_pref_freq_given && pref_freq > 0 &&
6887 wpa_s->num_multichan_concurrent > 1 &&
6888 wpas_p2p_num_unused_channels(wpa_s) > 0) {
6889 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6890 pref_freq);
6891 pref_freq = 0;
6892 }
6893
6894 /*
6895 * Stop any find/listen operations before invitation and possibly
6896 * connection establishment.
6897 */
6898 wpas_p2p_stop_find_oper(wpa_s);
6899
6900 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6901 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6902 1, pref_freq, -1);
6903 }
6904
6905
6906 /* 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)6907 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6908 const u8 *peer_addr, const u8 *go_dev_addr)
6909 {
6910 struct wpa_global *global = wpa_s->global;
6911 enum p2p_invite_role role;
6912 u8 *bssid = NULL;
6913 struct wpa_ssid *ssid;
6914 int persistent;
6915 int freq = 0, force_freq = 0, pref_freq = 0;
6916 int res;
6917 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6918
6919 wpa_s->p2p_persistent_go_freq = 0;
6920 wpa_s->p2p_go_ht40 = 0;
6921 wpa_s->p2p_go_vht = 0;
6922 wpa_s->p2p_go_vht_center_freq2 = 0;
6923 wpa_s->p2p_go_max_oper_chwidth = 0;
6924
6925 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6926 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6927 break;
6928 }
6929 if (wpa_s == NULL) {
6930 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6931 return -1;
6932 }
6933
6934 ssid = wpa_s->current_ssid;
6935 if (ssid == NULL) {
6936 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6937 "invitation");
6938 return -1;
6939 }
6940
6941 wpa_s->global->p2p_invite_group = wpa_s;
6942 persistent = ssid->p2p_persistent_group &&
6943 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6944 ssid->ssid, ssid->ssid_len);
6945
6946 if (ssid->mode == WPAS_MODE_P2P_GO) {
6947 role = P2P_INVITE_ROLE_ACTIVE_GO;
6948 bssid = wpa_s->own_addr;
6949 if (go_dev_addr == NULL)
6950 go_dev_addr = wpa_s->global->p2p_dev_addr;
6951 freq = ssid->frequency;
6952 } else {
6953 role = P2P_INVITE_ROLE_CLIENT;
6954 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6955 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6956 "invite to current group");
6957 return -1;
6958 }
6959 bssid = wpa_s->bssid;
6960 if (go_dev_addr == NULL &&
6961 !is_zero_ether_addr(wpa_s->go_dev_addr))
6962 go_dev_addr = wpa_s->go_dev_addr;
6963 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6964 (int) wpa_s->assoc_freq;
6965 }
6966 wpa_s->p2pdev->pending_invite_ssid_id = -1;
6967
6968 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6969 return -1;
6970
6971 size = P2P_MAX_PREF_CHANNELS;
6972 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6973 role == P2P_INVITE_ROLE_ACTIVE_GO,
6974 pref_freq_list, &size);
6975 if (res)
6976 return res;
6977 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6978
6979 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6980 ssid->ssid, ssid->ssid_len, force_freq,
6981 go_dev_addr, persistent, pref_freq, -1);
6982 }
6983
6984
wpas_p2p_completed(struct wpa_supplicant * wpa_s)6985 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6986 {
6987 struct wpa_ssid *ssid = wpa_s->current_ssid;
6988 u8 go_dev_addr[ETH_ALEN];
6989 int persistent;
6990 int freq;
6991 u8 ip[3 * 4];
6992 char ip_addr[100];
6993
6994 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6995 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6996 wpa_s->p2pdev, NULL);
6997 }
6998
6999 if (!wpa_s->show_group_started || !ssid)
7000 return;
7001
7002 wpa_s->show_group_started = 0;
7003 if (!wpa_s->p2p_go_group_formation_completed &&
7004 wpa_s->global->p2p_group_formation == wpa_s) {
7005 wpa_dbg(wpa_s, MSG_DEBUG,
7006 "P2P: Marking group formation completed on client on data connection");
7007 wpa_s->p2p_go_group_formation_completed = 1;
7008 wpa_s->global->p2p_group_formation = NULL;
7009 wpa_s->p2p_in_provisioning = 0;
7010 wpa_s->p2p_in_invitation = 0;
7011 }
7012
7013 os_memset(go_dev_addr, 0, ETH_ALEN);
7014 if (ssid->bssid_set)
7015 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7016 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7017 ssid->ssid_len);
7018 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7019
7020 if (wpa_s->global->p2p_group_formation == wpa_s)
7021 wpa_s->global->p2p_group_formation = NULL;
7022
7023 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7024 (int) wpa_s->assoc_freq;
7025
7026 ip_addr[0] = '\0';
7027 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7028 int res;
7029
7030 res = os_snprintf(ip_addr, sizeof(ip_addr),
7031 " ip_addr=%u.%u.%u.%u "
7032 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7033 ip[0], ip[1], ip[2], ip[3],
7034 ip[4], ip[5], ip[6], ip[7],
7035 ip[8], ip[9], ip[10], ip[11]);
7036 if (os_snprintf_error(sizeof(ip_addr), res))
7037 ip_addr[0] = '\0';
7038 }
7039
7040 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7041 ssid->passphrase == NULL && ssid->psk_set ?
7042 ssid->psk : NULL,
7043 ssid->passphrase, go_dev_addr, persistent,
7044 ip_addr);
7045
7046 if (persistent)
7047 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7048 ssid, go_dev_addr);
7049
7050 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip);
7051 }
7052
7053
wpas_p2p_presence_req(struct wpa_supplicant * wpa_s,u32 duration1,u32 interval1,u32 duration2,u32 interval2)7054 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7055 u32 interval1, u32 duration2, u32 interval2)
7056 {
7057 int ret;
7058
7059 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7060 return -1;
7061
7062 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7063 wpa_s->current_ssid == NULL ||
7064 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7065 return -1;
7066
7067 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7068 wpa_s->own_addr, wpa_s->assoc_freq,
7069 duration1, interval1, duration2, interval2);
7070 if (ret == 0)
7071 wpa_s->waiting_presence_resp = 1;
7072
7073 return ret;
7074 }
7075
7076
wpas_p2p_ext_listen(struct wpa_supplicant * wpa_s,unsigned int period,unsigned int interval)7077 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7078 unsigned int interval)
7079 {
7080 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7081 return -1;
7082
7083 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7084 }
7085
7086
wpas_p2p_is_client(struct wpa_supplicant * wpa_s)7087 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7088 {
7089 if (wpa_s->current_ssid == NULL) {
7090 /*
7091 * current_ssid can be cleared when P2P client interface gets
7092 * disconnected, so assume this interface was used as P2P
7093 * client.
7094 */
7095 return 1;
7096 }
7097 return wpa_s->current_ssid->p2p_group &&
7098 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7099 }
7100
7101
wpas_p2p_group_idle_timeout(void * eloop_ctx,void * timeout_ctx)7102 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7103 {
7104 struct wpa_supplicant *wpa_s = eloop_ctx;
7105
7106 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7107 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7108 "disabled");
7109 return;
7110 }
7111
7112 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7113 "group");
7114 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7115 }
7116
7117
wpas_p2p_set_group_idle_timeout(struct wpa_supplicant * wpa_s)7118 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7119 {
7120 int timeout;
7121
7122 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7123 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7124
7125 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7126 return;
7127
7128 timeout = wpa_s->conf->p2p_group_idle;
7129 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7130 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7131 timeout = P2P_MAX_CLIENT_IDLE;
7132
7133 if (timeout == 0)
7134 return;
7135
7136 if (timeout < 0) {
7137 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7138 timeout = 0; /* special client mode no-timeout */
7139 else
7140 return;
7141 }
7142
7143 if (wpa_s->p2p_in_provisioning) {
7144 /*
7145 * Use the normal group formation timeout during the
7146 * provisioning phase to avoid terminating this process too
7147 * early due to group idle timeout.
7148 */
7149 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7150 "during provisioning");
7151 return;
7152 }
7153
7154 if (wpa_s->show_group_started) {
7155 /*
7156 * Use the normal group formation timeout between the end of
7157 * the provisioning phase and completion of 4-way handshake to
7158 * avoid terminating this process too early due to group idle
7159 * timeout.
7160 */
7161 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7162 "while waiting for initial 4-way handshake to "
7163 "complete");
7164 return;
7165 }
7166
7167 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7168 timeout);
7169 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7170 wpa_s, NULL);
7171 }
7172
7173
7174 /* 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)7175 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7176 u16 reason_code, const u8 *ie, size_t ie_len,
7177 int locally_generated)
7178 {
7179 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7180 return 0;
7181
7182 if (!locally_generated)
7183 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7184 ie_len);
7185
7186 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7187 wpa_s->current_ssid &&
7188 wpa_s->current_ssid->p2p_group &&
7189 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7190 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7191 "session is ending");
7192 if (wpas_p2p_group_delete(wpa_s,
7193 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7194 > 0)
7195 return 1;
7196 }
7197
7198 return 0;
7199 }
7200
7201
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)7202 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7203 u16 reason_code, const u8 *ie, size_t ie_len,
7204 int locally_generated)
7205 {
7206 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7207 return;
7208
7209 if (!locally_generated)
7210 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7211 ie_len);
7212 }
7213
7214
wpas_p2p_update_config(struct wpa_supplicant * wpa_s)7215 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7216 {
7217 struct p2p_data *p2p = wpa_s->global->p2p;
7218
7219 if (p2p == NULL)
7220 return;
7221
7222 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7223 return;
7224
7225 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7226 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7227
7228 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7229 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7230
7231 if (wpa_s->wps &&
7232 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7233 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7234
7235 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7236 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7237
7238 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7239 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7240 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7241 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7242 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7243 }
7244
7245 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7246 p2p_set_sec_dev_types(p2p,
7247 (void *) wpa_s->conf->sec_device_type,
7248 wpa_s->conf->num_sec_device_types);
7249
7250 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7251 int i;
7252 p2p_remove_wps_vendor_extensions(p2p);
7253 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7254 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7255 continue;
7256 p2p_add_wps_vendor_extension(
7257 p2p, wpa_s->conf->wps_vendor_ext[i]);
7258 }
7259 }
7260
7261 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7262 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7263 char country[3];
7264 country[0] = wpa_s->conf->country[0];
7265 country[1] = wpa_s->conf->country[1];
7266 country[2] = 0x04;
7267 p2p_set_country(p2p, country);
7268 }
7269
7270 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7271 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7272 wpa_s->conf->p2p_ssid_postfix ?
7273 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7274 0);
7275 }
7276
7277 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7278 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7279
7280 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7281 u8 reg_class, channel;
7282 int ret;
7283 unsigned int r;
7284 u8 channel_forced;
7285
7286 if (wpa_s->conf->p2p_listen_reg_class &&
7287 wpa_s->conf->p2p_listen_channel) {
7288 reg_class = wpa_s->conf->p2p_listen_reg_class;
7289 channel = wpa_s->conf->p2p_listen_channel;
7290 channel_forced = 1;
7291 } else {
7292 reg_class = 81;
7293 /*
7294 * Pick one of the social channels randomly as the
7295 * listen channel.
7296 */
7297 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7298 channel = 1;
7299 else
7300 channel = 1 + (r % 3) * 5;
7301 channel_forced = 0;
7302 }
7303 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7304 channel_forced);
7305 if (ret)
7306 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7307 "failed: %d", ret);
7308 }
7309 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7310 u8 op_reg_class, op_channel, cfg_op_channel;
7311 int ret = 0;
7312 unsigned int r;
7313 if (wpa_s->conf->p2p_oper_reg_class &&
7314 wpa_s->conf->p2p_oper_channel) {
7315 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7316 op_channel = wpa_s->conf->p2p_oper_channel;
7317 cfg_op_channel = 1;
7318 } else {
7319 op_reg_class = 81;
7320 /*
7321 * Use random operation channel from (1, 6, 11)
7322 *if no other preference is indicated.
7323 */
7324 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7325 op_channel = 1;
7326 else
7327 op_channel = 1 + (r % 3) * 5;
7328 cfg_op_channel = 0;
7329 }
7330 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7331 cfg_op_channel);
7332 if (ret)
7333 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7334 "failed: %d", ret);
7335 }
7336
7337 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7338 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7339 wpa_s->conf->p2p_pref_chan) < 0) {
7340 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7341 "update failed");
7342 }
7343
7344 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7345 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7346 "update failed");
7347 }
7348 }
7349
7350 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7351 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7352 }
7353
7354
wpas_p2p_set_noa(struct wpa_supplicant * wpa_s,u8 count,int start,int duration)7355 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7356 int duration)
7357 {
7358 if (!wpa_s->ap_iface)
7359 return -1;
7360 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7361 duration);
7362 }
7363
7364
wpas_p2p_set_cross_connect(struct wpa_supplicant * wpa_s,int enabled)7365 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7366 {
7367 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7368 return -1;
7369
7370 wpa_s->global->cross_connection = enabled;
7371 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7372
7373 if (!enabled) {
7374 struct wpa_supplicant *iface;
7375
7376 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7377 {
7378 if (iface->cross_connect_enabled == 0)
7379 continue;
7380
7381 iface->cross_connect_enabled = 0;
7382 iface->cross_connect_in_use = 0;
7383 wpa_msg_global(iface->p2pdev, MSG_INFO,
7384 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7385 iface->ifname,
7386 iface->cross_connect_uplink);
7387 }
7388 }
7389
7390 return 0;
7391 }
7392
7393
wpas_p2p_enable_cross_connect(struct wpa_supplicant * uplink)7394 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7395 {
7396 struct wpa_supplicant *iface;
7397
7398 if (!uplink->global->cross_connection)
7399 return;
7400
7401 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7402 if (!iface->cross_connect_enabled)
7403 continue;
7404 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7405 0)
7406 continue;
7407 if (iface->ap_iface == NULL)
7408 continue;
7409 if (iface->cross_connect_in_use)
7410 continue;
7411
7412 iface->cross_connect_in_use = 1;
7413 wpa_msg_global(iface->p2pdev, MSG_INFO,
7414 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7415 iface->ifname, iface->cross_connect_uplink);
7416 }
7417 }
7418
7419
wpas_p2p_disable_cross_connect(struct wpa_supplicant * uplink)7420 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7421 {
7422 struct wpa_supplicant *iface;
7423
7424 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7425 if (!iface->cross_connect_enabled)
7426 continue;
7427 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7428 0)
7429 continue;
7430 if (!iface->cross_connect_in_use)
7431 continue;
7432
7433 wpa_msg_global(iface->p2pdev, MSG_INFO,
7434 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7435 iface->ifname, iface->cross_connect_uplink);
7436 iface->cross_connect_in_use = 0;
7437 }
7438 }
7439
7440
wpas_p2p_notif_connected(struct wpa_supplicant * wpa_s)7441 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7442 {
7443 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7444 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7445 wpa_s->cross_connect_disallowed)
7446 wpas_p2p_disable_cross_connect(wpa_s);
7447 else
7448 wpas_p2p_enable_cross_connect(wpa_s);
7449 if (!wpa_s->ap_iface &&
7450 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7451 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7452 }
7453
7454
wpas_p2p_notif_disconnected(struct wpa_supplicant * wpa_s)7455 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7456 {
7457 wpas_p2p_disable_cross_connect(wpa_s);
7458 if (!wpa_s->ap_iface &&
7459 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7460 wpa_s, NULL))
7461 wpas_p2p_set_group_idle_timeout(wpa_s);
7462 }
7463
7464
wpas_p2p_cross_connect_setup(struct wpa_supplicant * wpa_s)7465 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7466 {
7467 struct wpa_supplicant *iface;
7468
7469 if (!wpa_s->global->cross_connection)
7470 return;
7471
7472 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7473 if (iface == wpa_s)
7474 continue;
7475 if (iface->drv_flags &
7476 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7477 continue;
7478 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7479 iface != wpa_s->parent)
7480 continue;
7481
7482 wpa_s->cross_connect_enabled = 1;
7483 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7484 sizeof(wpa_s->cross_connect_uplink));
7485 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7486 "%s to %s whenever uplink is available",
7487 wpa_s->ifname, wpa_s->cross_connect_uplink);
7488
7489 if (iface->ap_iface || iface->current_ssid == NULL ||
7490 iface->current_ssid->mode != WPAS_MODE_INFRA ||
7491 iface->cross_connect_disallowed ||
7492 iface->wpa_state != WPA_COMPLETED)
7493 break;
7494
7495 wpa_s->cross_connect_in_use = 1;
7496 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7497 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7498 wpa_s->ifname, wpa_s->cross_connect_uplink);
7499 break;
7500 }
7501 }
7502
7503
wpas_p2p_notif_pbc_overlap(struct wpa_supplicant * wpa_s)7504 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7505 {
7506 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7507 !wpa_s->p2p_in_provisioning)
7508 return 0; /* not P2P client operation */
7509
7510 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7511 "session overlap");
7512 if (wpa_s != wpa_s->p2pdev)
7513 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7514 wpas_p2p_group_formation_failed(wpa_s, 0);
7515 return 1;
7516 }
7517
7518
wpas_p2p_pbc_overlap_cb(void * eloop_ctx,void * timeout_ctx)7519 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7520 {
7521 struct wpa_supplicant *wpa_s = eloop_ctx;
7522 wpas_p2p_notif_pbc_overlap(wpa_s);
7523 }
7524
7525
wpas_p2p_update_channel_list(struct wpa_supplicant * wpa_s,enum wpas_p2p_channel_update_trig trig)7526 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7527 enum wpas_p2p_channel_update_trig trig)
7528 {
7529 struct p2p_channels chan, cli_chan;
7530 struct wpa_used_freq_data *freqs = NULL;
7531 unsigned int num = wpa_s->num_multichan_concurrent;
7532
7533 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7534 return;
7535
7536 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7537 if (!freqs)
7538 return;
7539
7540 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7541
7542 os_memset(&chan, 0, sizeof(chan));
7543 os_memset(&cli_chan, 0, sizeof(cli_chan));
7544 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7545 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7546 "channel list");
7547 return;
7548 }
7549
7550 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7551
7552 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7553
7554 /*
7555 * The used frequencies map changed, so it is possible that a GO is
7556 * using a channel that is no longer valid for P2P use. It is also
7557 * possible that due to policy consideration, it would be preferable to
7558 * move it to a frequency already used by other station interfaces.
7559 */
7560 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7561
7562 os_free(freqs);
7563 }
7564
7565
wpas_p2p_scan_res_ignore(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)7566 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7567 struct wpa_scan_results *scan_res)
7568 {
7569 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7570 }
7571
7572
wpas_p2p_cancel(struct wpa_supplicant * wpa_s)7573 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7574 {
7575 struct wpa_global *global = wpa_s->global;
7576 int found = 0;
7577 const u8 *peer;
7578
7579 if (global->p2p == NULL)
7580 return -1;
7581
7582 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7583
7584 if (wpa_s->pending_interface_name[0] &&
7585 !is_zero_ether_addr(wpa_s->pending_interface_addr))
7586 found = 1;
7587
7588 peer = p2p_get_go_neg_peer(global->p2p);
7589 if (peer) {
7590 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7591 MACSTR, MAC2STR(peer));
7592 p2p_unauthorize(global->p2p, peer);
7593 found = 1;
7594 }
7595
7596 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7597 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7598 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7599 found = 1;
7600 }
7601
7602 if (wpa_s->pending_pd_before_join) {
7603 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7604 wpa_s->pending_pd_before_join = 0;
7605 found = 1;
7606 }
7607
7608 wpas_p2p_stop_find(wpa_s);
7609
7610 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7611 if (wpa_s == global->p2p_group_formation &&
7612 (wpa_s->p2p_in_provisioning ||
7613 wpa_s->parent->pending_interface_type ==
7614 WPA_IF_P2P_CLIENT)) {
7615 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7616 "formation found - cancelling",
7617 wpa_s->ifname);
7618 found = 1;
7619 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7620 wpa_s->p2pdev, NULL);
7621 if (wpa_s->p2p_in_provisioning) {
7622 wpas_group_formation_completed(wpa_s, 0, 0);
7623 break;
7624 }
7625 wpas_p2p_group_delete(wpa_s,
7626 P2P_GROUP_REMOVAL_REQUESTED);
7627 break;
7628 } else if (wpa_s->p2p_in_invitation) {
7629 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7630 wpa_s->ifname);
7631 found = 1;
7632 wpas_p2p_group_formation_failed(wpa_s, 0);
7633 break;
7634 }
7635 }
7636
7637 if (!found) {
7638 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7639 return -1;
7640 }
7641
7642 return 0;
7643 }
7644
7645
wpas_p2p_interface_unavailable(struct wpa_supplicant * wpa_s)7646 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7647 {
7648 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7649 return;
7650
7651 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7652 "being available anymore");
7653 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7654 }
7655
7656
wpas_p2p_update_best_channels(struct wpa_supplicant * wpa_s,int freq_24,int freq_5,int freq_overall)7657 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7658 int freq_24, int freq_5, int freq_overall)
7659 {
7660 struct p2p_data *p2p = wpa_s->global->p2p;
7661 if (p2p == NULL)
7662 return;
7663 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7664 }
7665
7666
wpas_p2p_unauthorize(struct wpa_supplicant * wpa_s,const char * addr)7667 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7668 {
7669 u8 peer[ETH_ALEN];
7670 struct p2p_data *p2p = wpa_s->global->p2p;
7671
7672 if (p2p == NULL)
7673 return -1;
7674
7675 if (hwaddr_aton(addr, peer))
7676 return -1;
7677
7678 return p2p_unauthorize(p2p, peer);
7679 }
7680
7681
7682 /**
7683 * wpas_p2p_disconnect - Disconnect from a P2P Group
7684 * @wpa_s: Pointer to wpa_supplicant data
7685 * Returns: 0 on success, -1 on failure
7686 *
7687 * This can be used to disconnect from a group in which the local end is a P2P
7688 * Client or to end a P2P Group in case the local end is the Group Owner. If a
7689 * virtual network interface was created for this group, that interface will be
7690 * removed. Otherwise, only the configured P2P group network will be removed
7691 * from the interface.
7692 */
wpas_p2p_disconnect(struct wpa_supplicant * wpa_s)7693 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7694 {
7695
7696 if (wpa_s == NULL)
7697 return -1;
7698
7699 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7700 -1 : 0;
7701 }
7702
7703
wpas_p2p_in_progress(struct wpa_supplicant * wpa_s)7704 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7705 {
7706 int ret;
7707
7708 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7709 return 0;
7710
7711 ret = p2p_in_progress(wpa_s->global->p2p);
7712 if (ret == 0) {
7713 /*
7714 * Check whether there is an ongoing WPS provisioning step (or
7715 * other parts of group formation) on another interface since
7716 * p2p_in_progress() does not report this to avoid issues for
7717 * scans during such provisioning step.
7718 */
7719 if (wpa_s->global->p2p_group_formation &&
7720 wpa_s->global->p2p_group_formation != wpa_s) {
7721 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7722 "in group formation",
7723 wpa_s->global->p2p_group_formation->ifname);
7724 ret = 1;
7725 }
7726 }
7727
7728 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7729 struct os_reltime now;
7730 os_get_reltime(&now);
7731 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7732 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7733 /* Wait for the first client has expired */
7734 wpa_s->global->p2p_go_wait_client.sec = 0;
7735 } else {
7736 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7737 ret = 1;
7738 }
7739 }
7740
7741 return ret;
7742 }
7743
7744
wpas_p2p_network_removed(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)7745 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7746 struct wpa_ssid *ssid)
7747 {
7748 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7749 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7750 wpa_s->p2pdev, NULL) > 0) {
7751 /**
7752 * Remove the network by scheduling the group formation
7753 * timeout to happen immediately. The teardown code
7754 * needs to be scheduled to run asynch later so that we
7755 * don't delete data from under ourselves unexpectedly.
7756 * Calling wpas_p2p_group_formation_timeout directly
7757 * causes a series of crashes in WPS failure scenarios.
7758 */
7759 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7760 "P2P group network getting removed");
7761 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7762 wpa_s->p2pdev, NULL);
7763 }
7764 }
7765
7766
wpas_p2p_get_persistent(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * ssid,size_t ssid_len)7767 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7768 const u8 *addr, const u8 *ssid,
7769 size_t ssid_len)
7770 {
7771 struct wpa_ssid *s;
7772 size_t i;
7773
7774 for (s = wpa_s->conf->ssid; s; s = s->next) {
7775 if (s->disabled != 2)
7776 continue;
7777 if (ssid &&
7778 (ssid_len != s->ssid_len ||
7779 os_memcmp(ssid, s->ssid, ssid_len) != 0))
7780 continue;
7781 if (addr == NULL) {
7782 if (s->mode == WPAS_MODE_P2P_GO)
7783 return s;
7784 continue;
7785 }
7786 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7787 return s; /* peer is GO in the persistent group */
7788 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7789 continue;
7790 for (i = 0; i < s->num_p2p_clients; i++) {
7791 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7792 addr, ETH_ALEN) == 0)
7793 return s; /* peer is P2P client in persistent
7794 * group */
7795 }
7796 }
7797
7798 return NULL;
7799 }
7800
7801
wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant * wpa_s,const u8 * addr)7802 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7803 const u8 *addr)
7804 {
7805 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7806 wpa_s->p2pdev, NULL) > 0) {
7807 /*
7808 * This can happen if WPS provisioning step is not terminated
7809 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7810 * peer was able to connect, there is no need to time out group
7811 * formation after this, though. In addition, this is used with
7812 * the initial connection wait on the GO as a separate formation
7813 * timeout and as such, expected to be hit after the initial WPS
7814 * provisioning step.
7815 */
7816 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7817
7818 if (!wpa_s->p2p_go_group_formation_completed &&
7819 !wpa_s->group_formation_reported) {
7820 /*
7821 * GO has not yet notified group formation success since
7822 * the WPS step was not completed cleanly. Do that
7823 * notification now since the P2P Client was able to
7824 * connect and as such, must have received the
7825 * credential from the WPS step.
7826 */
7827 if (wpa_s->global->p2p)
7828 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7829 wpas_group_formation_completed(wpa_s, 1, 0);
7830 }
7831 }
7832 if (!wpa_s->p2p_go_group_formation_completed) {
7833 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7834 wpa_s->p2p_go_group_formation_completed = 1;
7835 wpa_s->global->p2p_group_formation = NULL;
7836 wpa_s->p2p_in_provisioning = 0;
7837 wpa_s->p2p_in_invitation = 0;
7838 }
7839 wpa_s->global->p2p_go_wait_client.sec = 0;
7840 if (addr == NULL)
7841 return;
7842 wpas_p2p_add_persistent_group_client(wpa_s, addr);
7843 }
7844
7845
wpas_p2p_fallback_to_go_neg(struct wpa_supplicant * wpa_s,int group_added)7846 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7847 int group_added)
7848 {
7849 struct wpa_supplicant *group = wpa_s;
7850 int ret = 0;
7851
7852 if (wpa_s->global->p2p_group_formation)
7853 group = wpa_s->global->p2p_group_formation;
7854 wpa_s = wpa_s->global->p2p_init_wpa_s;
7855 offchannel_send_action_done(wpa_s);
7856 if (group_added)
7857 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7858 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7859 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7860 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7861 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7862 wpa_s->p2p_go_vht_center_freq2,
7863 wpa_s->p2p_persistent_id,
7864 wpa_s->p2p_pd_before_go_neg,
7865 wpa_s->p2p_go_ht40,
7866 wpa_s->p2p_go_vht,
7867 wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7868 return ret;
7869 }
7870
7871
wpas_p2p_scan_no_go_seen(struct wpa_supplicant * wpa_s)7872 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7873 {
7874 int res;
7875
7876 if (!wpa_s->p2p_fallback_to_go_neg ||
7877 wpa_s->p2p_in_provisioning <= 5)
7878 return 0;
7879
7880 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7881 return 0; /* peer operating as a GO */
7882
7883 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7884 "fallback to GO Negotiation");
7885 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7886 "reason=GO-not-found");
7887 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7888
7889 return res == 1 ? 2 : 1;
7890 }
7891
7892
wpas_p2p_search_delay(struct wpa_supplicant * wpa_s)7893 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7894 {
7895 struct wpa_supplicant *ifs;
7896
7897 if (wpa_s->wpa_state > WPA_SCANNING) {
7898 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7899 "concurrent operation",
7900 wpa_s->conf->p2p_search_delay);
7901 return wpa_s->conf->p2p_search_delay;
7902 }
7903
7904 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7905 radio_list) {
7906 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7907 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7908 "delay due to concurrent operation on "
7909 "interface %s",
7910 wpa_s->conf->p2p_search_delay,
7911 ifs->ifname);
7912 return wpa_s->conf->p2p_search_delay;
7913 }
7914 }
7915
7916 return 0;
7917 }
7918
7919
wpas_p2p_remove_psk_entry(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)7920 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7921 struct wpa_ssid *s, const u8 *addr,
7922 int iface_addr)
7923 {
7924 struct psk_list_entry *psk, *tmp;
7925 int changed = 0;
7926
7927 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7928 list) {
7929 if ((iface_addr && !psk->p2p &&
7930 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7931 (!iface_addr && psk->p2p &&
7932 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7933 wpa_dbg(wpa_s, MSG_DEBUG,
7934 "P2P: Remove persistent group PSK list entry for "
7935 MACSTR " p2p=%u",
7936 MAC2STR(psk->addr), psk->p2p);
7937 dl_list_del(&psk->list);
7938 os_free(psk);
7939 changed++;
7940 }
7941 }
7942
7943 return changed;
7944 }
7945
7946
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)7947 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7948 const u8 *p2p_dev_addr,
7949 const u8 *psk, size_t psk_len)
7950 {
7951 struct wpa_ssid *ssid = wpa_s->current_ssid;
7952 struct wpa_ssid *persistent;
7953 struct psk_list_entry *p, *last;
7954
7955 if (psk_len != sizeof(p->psk))
7956 return;
7957
7958 if (p2p_dev_addr) {
7959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7960 " p2p_dev_addr=" MACSTR,
7961 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7962 if (is_zero_ether_addr(p2p_dev_addr))
7963 p2p_dev_addr = NULL;
7964 } else {
7965 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7966 MAC2STR(mac_addr));
7967 }
7968
7969 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7970 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7971 /* To be added to persistent group once created */
7972 if (wpa_s->global->add_psk == NULL) {
7973 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7974 if (wpa_s->global->add_psk == NULL)
7975 return;
7976 }
7977 p = wpa_s->global->add_psk;
7978 if (p2p_dev_addr) {
7979 p->p2p = 1;
7980 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7981 } else {
7982 p->p2p = 0;
7983 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7984 }
7985 os_memcpy(p->psk, psk, psk_len);
7986 return;
7987 }
7988
7989 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7990 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7991 return;
7992 }
7993
7994 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7995 ssid->ssid_len);
7996 if (!persistent) {
7997 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7998 return;
7999 }
8000
8001 p = os_zalloc(sizeof(*p));
8002 if (p == NULL)
8003 return;
8004 if (p2p_dev_addr) {
8005 p->p2p = 1;
8006 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8007 } else {
8008 p->p2p = 0;
8009 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8010 }
8011 os_memcpy(p->psk, psk, psk_len);
8012
8013 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8014 (last = dl_list_last(&persistent->psk_list,
8015 struct psk_list_entry, list))) {
8016 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8017 MACSTR " (p2p=%u) to make room for a new one",
8018 MAC2STR(last->addr), last->p2p);
8019 dl_list_del(&last->list);
8020 os_free(last);
8021 }
8022
8023 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
8024 p2p_dev_addr ? p2p_dev_addr : mac_addr,
8025 p2p_dev_addr == NULL);
8026 if (p2p_dev_addr) {
8027 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8028 MACSTR, MAC2STR(p2p_dev_addr));
8029 } else {
8030 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8031 MAC2STR(mac_addr));
8032 }
8033 dl_list_add(&persistent->psk_list, &p->list);
8034
8035 if (wpa_s->p2pdev->conf->update_config &&
8036 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
8037 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8038 }
8039
8040
wpas_p2p_remove_psk(struct wpa_supplicant * wpa_s,struct wpa_ssid * s,const u8 * addr,int iface_addr)8041 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8042 struct wpa_ssid *s, const u8 *addr,
8043 int iface_addr)
8044 {
8045 int res;
8046
8047 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8048 if (res > 0 && wpa_s->conf->update_config &&
8049 wpa_config_write(wpa_s->confname, wpa_s->conf))
8050 wpa_dbg(wpa_s, MSG_DEBUG,
8051 "P2P: Failed to update configuration");
8052 }
8053
8054
wpas_p2p_remove_client_go(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)8055 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8056 const u8 *peer, int iface_addr)
8057 {
8058 struct hostapd_data *hapd;
8059 struct hostapd_wpa_psk *psk, *prev, *rem;
8060 struct sta_info *sta;
8061
8062 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8063 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8064 return;
8065
8066 /* Remove per-station PSK entry */
8067 hapd = wpa_s->ap_iface->bss[0];
8068 prev = NULL;
8069 psk = hapd->conf->ssid.wpa_psk;
8070 while (psk) {
8071 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8072 (!iface_addr &&
8073 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8074 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8075 MACSTR " iface_addr=%d",
8076 MAC2STR(peer), iface_addr);
8077 if (prev)
8078 prev->next = psk->next;
8079 else
8080 hapd->conf->ssid.wpa_psk = psk->next;
8081 rem = psk;
8082 psk = psk->next;
8083 os_free(rem);
8084 } else {
8085 prev = psk;
8086 psk = psk->next;
8087 }
8088 }
8089
8090 /* Disconnect from group */
8091 if (iface_addr)
8092 sta = ap_get_sta(hapd, peer);
8093 else
8094 sta = ap_get_sta_p2p(hapd, peer);
8095 if (sta) {
8096 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8097 " (iface_addr=%d) from group",
8098 MAC2STR(peer), iface_addr);
8099 hostapd_drv_sta_deauth(hapd, sta->addr,
8100 WLAN_REASON_DEAUTH_LEAVING);
8101 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8102 }
8103 }
8104
8105
wpas_p2p_remove_client(struct wpa_supplicant * wpa_s,const u8 * peer,int iface_addr)8106 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8107 int iface_addr)
8108 {
8109 struct wpa_ssid *s;
8110 struct wpa_supplicant *w;
8111 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8112
8113 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8114
8115 /* Remove from any persistent group */
8116 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8117 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8118 continue;
8119 if (!iface_addr)
8120 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8121 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8122 }
8123
8124 /* Remove from any operating group */
8125 for (w = wpa_s->global->ifaces; w; w = w->next)
8126 wpas_p2p_remove_client_go(w, peer, iface_addr);
8127 }
8128
8129
wpas_p2p_psk_failure_removal(void * eloop_ctx,void * timeout_ctx)8130 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8131 {
8132 struct wpa_supplicant *wpa_s = eloop_ctx;
8133 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8134 }
8135
8136
wpas_p2p_group_freq_conflict(void * eloop_ctx,void * timeout_ctx)8137 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8138 {
8139 struct wpa_supplicant *wpa_s = eloop_ctx;
8140
8141 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8142 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8143 }
8144
8145
wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant * wpa_s,int freq,struct wpa_ssid * ssid)8146 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8147 struct wpa_ssid *ssid)
8148 {
8149 struct wpa_supplicant *iface;
8150
8151 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8152 if (!iface->current_ssid ||
8153 iface->current_ssid->frequency == freq ||
8154 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8155 !iface->current_ssid->p2p_group))
8156 continue;
8157
8158 /* Remove the connection with least priority */
8159 if (!wpas_is_p2p_prioritized(iface)) {
8160 /* STA connection has priority over existing
8161 * P2P connection, so remove the interface. */
8162 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8163 eloop_register_timeout(0, 0,
8164 wpas_p2p_group_freq_conflict,
8165 iface, NULL);
8166 /* If connection in progress is P2P connection, do not
8167 * proceed for the connection. */
8168 if (wpa_s == iface)
8169 return -1;
8170 else
8171 return 0;
8172 } else {
8173 /* P2P connection has priority, disable the STA network
8174 */
8175 wpa_supplicant_disable_network(wpa_s->global->ifaces,
8176 ssid);
8177 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8178 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8179 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8180 ETH_ALEN);
8181 /* If P2P connection is in progress, continue
8182 * connecting...*/
8183 if (wpa_s == iface)
8184 return 0;
8185 else
8186 return -1;
8187 }
8188 }
8189
8190 return 0;
8191 }
8192
8193
wpas_p2p_4way_hs_failed(struct wpa_supplicant * wpa_s)8194 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8195 {
8196 struct wpa_ssid *ssid = wpa_s->current_ssid;
8197
8198 if (ssid == NULL || !ssid->p2p_group)
8199 return 0;
8200
8201 if (wpa_s->p2p_last_4way_hs_fail &&
8202 wpa_s->p2p_last_4way_hs_fail == ssid) {
8203 u8 go_dev_addr[ETH_ALEN];
8204 struct wpa_ssid *persistent;
8205
8206 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8207 ssid->ssid,
8208 ssid->ssid_len) <= 0) {
8209 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8210 goto disconnect;
8211 }
8212
8213 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8214 MACSTR, MAC2STR(go_dev_addr));
8215 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8216 ssid->ssid,
8217 ssid->ssid_len);
8218 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8219 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8220 goto disconnect;
8221 }
8222 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8223 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8224 persistent->id);
8225 disconnect:
8226 wpa_s->p2p_last_4way_hs_fail = NULL;
8227 /*
8228 * Remove the group from a timeout to avoid issues with caller
8229 * continuing to use the interface if this is on a P2P group
8230 * interface.
8231 */
8232 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8233 wpa_s, NULL);
8234 return 1;
8235 }
8236
8237 wpa_s->p2p_last_4way_hs_fail = ssid;
8238 return 0;
8239 }
8240
8241
8242 #ifdef CONFIG_WPS_NFC
8243
wpas_p2p_nfc_handover(int ndef,struct wpabuf * wsc,struct wpabuf * p2p)8244 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8245 struct wpabuf *p2p)
8246 {
8247 struct wpabuf *ret;
8248 size_t wsc_len;
8249
8250 if (p2p == NULL) {
8251 wpabuf_free(wsc);
8252 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8253 return NULL;
8254 }
8255
8256 wsc_len = wsc ? wpabuf_len(wsc) : 0;
8257 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8258 if (ret == NULL) {
8259 wpabuf_free(wsc);
8260 wpabuf_free(p2p);
8261 return NULL;
8262 }
8263
8264 wpabuf_put_be16(ret, wsc_len);
8265 if (wsc)
8266 wpabuf_put_buf(ret, wsc);
8267 wpabuf_put_be16(ret, wpabuf_len(p2p));
8268 wpabuf_put_buf(ret, p2p);
8269
8270 wpabuf_free(wsc);
8271 wpabuf_free(p2p);
8272 wpa_hexdump_buf(MSG_DEBUG,
8273 "P2P: Generated NFC connection handover message", ret);
8274
8275 if (ndef && ret) {
8276 struct wpabuf *tmp;
8277 tmp = ndef_build_p2p(ret);
8278 wpabuf_free(ret);
8279 if (tmp == NULL) {
8280 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8281 return NULL;
8282 }
8283 ret = tmp;
8284 }
8285
8286 return ret;
8287 }
8288
8289
wpas_p2p_cli_freq(struct wpa_supplicant * wpa_s,struct wpa_ssid ** ssid,u8 * go_dev_addr)8290 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8291 struct wpa_ssid **ssid, u8 *go_dev_addr)
8292 {
8293 struct wpa_supplicant *iface;
8294
8295 if (go_dev_addr)
8296 os_memset(go_dev_addr, 0, ETH_ALEN);
8297 if (ssid)
8298 *ssid = NULL;
8299 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8300 if (iface->wpa_state < WPA_ASSOCIATING ||
8301 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8302 !iface->current_ssid->p2p_group ||
8303 iface->current_ssid->mode != WPAS_MODE_INFRA)
8304 continue;
8305 if (ssid)
8306 *ssid = iface->current_ssid;
8307 if (go_dev_addr)
8308 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8309 return iface->assoc_freq;
8310 }
8311 return 0;
8312 }
8313
8314
wpas_p2p_nfc_handover_req(struct wpa_supplicant * wpa_s,int ndef)8315 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8316 int ndef)
8317 {
8318 struct wpabuf *wsc, *p2p;
8319 struct wpa_ssid *ssid;
8320 u8 go_dev_addr[ETH_ALEN];
8321 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8322
8323 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8324 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8325 return NULL;
8326 }
8327
8328 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8329 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8330 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8331 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8332 return NULL;
8333 }
8334
8335 if (cli_freq == 0) {
8336 wsc = wps_build_nfc_handover_req_p2p(
8337 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8338 } else
8339 wsc = NULL;
8340 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8341 go_dev_addr, ssid ? ssid->ssid : NULL,
8342 ssid ? ssid->ssid_len : 0);
8343
8344 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8345 }
8346
8347
wpas_p2p_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,int tag)8348 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8349 int ndef, int tag)
8350 {
8351 struct wpabuf *wsc, *p2p;
8352 struct wpa_ssid *ssid;
8353 u8 go_dev_addr[ETH_ALEN];
8354 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8355
8356 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8357 return NULL;
8358
8359 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8360 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8361 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8362 return NULL;
8363
8364 if (cli_freq == 0) {
8365 wsc = wps_build_nfc_handover_sel_p2p(
8366 wpa_s->parent->wps,
8367 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8368 DEV_PW_NFC_CONNECTION_HANDOVER,
8369 wpa_s->conf->wps_nfc_dh_pubkey,
8370 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8371 } else
8372 wsc = NULL;
8373 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8374 go_dev_addr, ssid ? ssid->ssid : NULL,
8375 ssid ? ssid->ssid_len : 0);
8376
8377 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8378 }
8379
8380
wpas_p2p_nfc_join_group(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params)8381 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8382 struct p2p_nfc_params *params)
8383 {
8384 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8385 "connection handover (freq=%d)",
8386 params->go_freq);
8387
8388 if (params->go_freq && params->go_ssid_len) {
8389 wpa_s->p2p_wps_method = WPS_NFC;
8390 wpa_s->pending_join_wps_method = WPS_NFC;
8391 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8392 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8393 ETH_ALEN);
8394 return wpas_p2p_join_start(wpa_s, params->go_freq,
8395 params->go_ssid,
8396 params->go_ssid_len);
8397 }
8398
8399 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8400 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8401 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8402 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8403 params->go_ssid_len ? params->go_ssid : NULL,
8404 params->go_ssid_len);
8405 }
8406
8407
wpas_p2p_nfc_auth_join(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int tag)8408 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8409 struct p2p_nfc_params *params, int tag)
8410 {
8411 int res, persistent;
8412 struct wpa_ssid *ssid;
8413
8414 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8415 "connection handover");
8416 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8417 ssid = wpa_s->current_ssid;
8418 if (ssid == NULL)
8419 continue;
8420 if (ssid->mode != WPAS_MODE_P2P_GO)
8421 continue;
8422 if (wpa_s->ap_iface == NULL)
8423 continue;
8424 break;
8425 }
8426 if (wpa_s == NULL) {
8427 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8428 return -1;
8429 }
8430
8431 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8432 DEV_PW_NFC_CONNECTION_HANDOVER &&
8433 !wpa_s->p2pdev->p2p_oob_dev_pw) {
8434 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8435 return -1;
8436 }
8437 res = wpas_ap_wps_add_nfc_pw(
8438 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8439 wpa_s->p2pdev->p2p_oob_dev_pw,
8440 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8441 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8442 if (res)
8443 return res;
8444
8445 if (!tag) {
8446 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8447 return 0;
8448 }
8449
8450 if (!params->peer ||
8451 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8452 return 0;
8453
8454 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8455 " to join", MAC2STR(params->peer->p2p_device_addr));
8456
8457 wpa_s->global->p2p_invite_group = wpa_s;
8458 persistent = ssid->p2p_persistent_group &&
8459 wpas_p2p_get_persistent(wpa_s->p2pdev,
8460 params->peer->p2p_device_addr,
8461 ssid->ssid, ssid->ssid_len);
8462 wpa_s->p2pdev->pending_invite_ssid_id = -1;
8463
8464 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8465 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8466 ssid->ssid, ssid->ssid_len, ssid->frequency,
8467 wpa_s->global->p2p_dev_addr, persistent, 0,
8468 wpa_s->p2pdev->p2p_oob_dev_pw_id);
8469 }
8470
8471
wpas_p2p_nfc_init_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)8472 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8473 struct p2p_nfc_params *params,
8474 int forced_freq)
8475 {
8476 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8477 "connection handover");
8478 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8479 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8480 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8481 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8482 NULL, 0);
8483 }
8484
8485
wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant * wpa_s,struct p2p_nfc_params * params,int forced_freq)8486 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8487 struct p2p_nfc_params *params,
8488 int forced_freq)
8489 {
8490 int res;
8491
8492 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8493 "connection handover");
8494 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8495 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8496 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8497 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8498 NULL, 0);
8499 if (res)
8500 return res;
8501
8502 res = wpas_p2p_listen(wpa_s, 60);
8503 if (res) {
8504 p2p_unauthorize(wpa_s->global->p2p,
8505 params->peer->p2p_device_addr);
8506 }
8507
8508 return res;
8509 }
8510
8511
wpas_p2p_nfc_connection_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int sel,int tag,int forced_freq)8512 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8513 const struct wpabuf *data,
8514 int sel, int tag, int forced_freq)
8515 {
8516 const u8 *pos, *end;
8517 u16 len, id;
8518 struct p2p_nfc_params params;
8519 int res;
8520
8521 os_memset(¶ms, 0, sizeof(params));
8522 params.sel = sel;
8523
8524 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8525
8526 pos = wpabuf_head(data);
8527 end = pos + wpabuf_len(data);
8528
8529 if (end - pos < 2) {
8530 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8531 "attributes");
8532 return -1;
8533 }
8534 len = WPA_GET_BE16(pos);
8535 pos += 2;
8536 if (len > end - pos) {
8537 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8538 "attributes");
8539 return -1;
8540 }
8541 params.wsc_attr = pos;
8542 params.wsc_len = len;
8543 pos += len;
8544
8545 if (end - pos < 2) {
8546 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8547 "attributes");
8548 return -1;
8549 }
8550 len = WPA_GET_BE16(pos);
8551 pos += 2;
8552 if (len > end - pos) {
8553 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8554 "attributes");
8555 return -1;
8556 }
8557 params.p2p_attr = pos;
8558 params.p2p_len = len;
8559 pos += len;
8560
8561 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8562 params.wsc_attr, params.wsc_len);
8563 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8564 params.p2p_attr, params.p2p_len);
8565 if (pos < end) {
8566 wpa_hexdump(MSG_DEBUG,
8567 "P2P: Ignored extra data after P2P attributes",
8568 pos, end - pos);
8569 }
8570
8571 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms);
8572 if (res)
8573 return res;
8574
8575 if (params.next_step == NO_ACTION)
8576 return 0;
8577
8578 if (params.next_step == BOTH_GO) {
8579 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8580 MAC2STR(params.peer->p2p_device_addr));
8581 return 0;
8582 }
8583
8584 if (params.next_step == PEER_CLIENT) {
8585 if (!is_zero_ether_addr(params.go_dev_addr)) {
8586 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8587 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8588 " ssid=\"%s\"",
8589 MAC2STR(params.peer->p2p_device_addr),
8590 params.go_freq,
8591 MAC2STR(params.go_dev_addr),
8592 wpa_ssid_txt(params.go_ssid,
8593 params.go_ssid_len));
8594 } else {
8595 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8596 "peer=" MACSTR " freq=%d",
8597 MAC2STR(params.peer->p2p_device_addr),
8598 params.go_freq);
8599 }
8600 return 0;
8601 }
8602
8603 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8604 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8605 MACSTR, MAC2STR(params.peer->p2p_device_addr));
8606 return 0;
8607 }
8608
8609 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8610 wpa_s->p2p_oob_dev_pw = NULL;
8611
8612 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8613 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8614 "received");
8615 return -1;
8616 }
8617
8618 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8619 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8620 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8621 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8622 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8623 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8624 wpa_s->p2p_peer_oob_pk_hash_known = 1;
8625
8626 if (tag) {
8627 if (id < 0x10) {
8628 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8629 "peer OOB Device Password Id %u", id);
8630 return -1;
8631 }
8632 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8633 "Device Password Id %u", id);
8634 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8635 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8636 params.oob_dev_pw_len -
8637 WPS_OOB_PUBKEY_HASH_LEN - 2);
8638 wpa_s->p2p_oob_dev_pw_id = id;
8639 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8640 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8641 params.oob_dev_pw_len -
8642 WPS_OOB_PUBKEY_HASH_LEN - 2);
8643 if (wpa_s->p2p_oob_dev_pw == NULL)
8644 return -1;
8645
8646 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8647 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8648 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8649 return -1;
8650 } else {
8651 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8652 "without Device Password");
8653 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8654 }
8655
8656 switch (params.next_step) {
8657 case NO_ACTION:
8658 case BOTH_GO:
8659 case PEER_CLIENT:
8660 /* already covered above */
8661 return 0;
8662 case JOIN_GROUP:
8663 return wpas_p2p_nfc_join_group(wpa_s, ¶ms);
8664 case AUTH_JOIN:
8665 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag);
8666 case INIT_GO_NEG:
8667 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq);
8668 case RESP_GO_NEG:
8669 /* TODO: use own OOB Dev Pw */
8670 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq);
8671 }
8672
8673 return -1;
8674 }
8675
8676
wpas_p2p_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int forced_freq)8677 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8678 const struct wpabuf *data, int forced_freq)
8679 {
8680 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8681 return -1;
8682
8683 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8684 }
8685
8686
wpas_p2p_nfc_report_handover(struct wpa_supplicant * wpa_s,int init,const struct wpabuf * req,const struct wpabuf * sel,int forced_freq)8687 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8688 const struct wpabuf *req,
8689 const struct wpabuf *sel, int forced_freq)
8690 {
8691 struct wpabuf *tmp;
8692 int ret;
8693
8694 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8695 return -1;
8696
8697 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8698
8699 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8700 wpabuf_head(req), wpabuf_len(req));
8701 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8702 wpabuf_head(sel), wpabuf_len(sel));
8703 if (forced_freq)
8704 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8705 tmp = ndef_parse_p2p(init ? sel : req);
8706 if (tmp == NULL) {
8707 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8708 return -1;
8709 }
8710
8711 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8712 forced_freq);
8713 wpabuf_free(tmp);
8714
8715 return ret;
8716 }
8717
8718
wpas_p2p_nfc_tag_enabled(struct wpa_supplicant * wpa_s,int enabled)8719 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8720 {
8721 const u8 *if_addr;
8722 int go_intent = wpa_s->conf->p2p_go_intent;
8723 struct wpa_supplicant *iface;
8724
8725 if (wpa_s->global->p2p == NULL)
8726 return -1;
8727
8728 if (!enabled) {
8729 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8730 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8731 {
8732 if (!iface->ap_iface)
8733 continue;
8734 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8735 }
8736 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8737 0, NULL);
8738 if (wpa_s->p2p_nfc_tag_enabled)
8739 wpas_p2p_remove_pending_group_interface(wpa_s);
8740 wpa_s->p2p_nfc_tag_enabled = 0;
8741 return 0;
8742 }
8743
8744 if (wpa_s->global->p2p_disabled)
8745 return -1;
8746
8747 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8748 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8749 wpa_s->conf->wps_nfc_dev_pw == NULL ||
8750 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8751 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8752 "to allow static handover cases");
8753 return -1;
8754 }
8755
8756 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8757
8758 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8759 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8760 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8761 if (wpa_s->p2p_oob_dev_pw == NULL)
8762 return -1;
8763 wpa_s->p2p_peer_oob_pk_hash_known = 0;
8764
8765 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8766 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8767 /*
8768 * P2P Group Interface present and the command came on group
8769 * interface, so enable the token for the current interface.
8770 */
8771 wpa_s->create_p2p_iface = 0;
8772 } else {
8773 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8774 }
8775
8776 if (wpa_s->create_p2p_iface) {
8777 enum wpa_driver_if_type iftype;
8778 /* Prepare to add a new interface for the group */
8779 iftype = WPA_IF_P2P_GROUP;
8780 if (go_intent == 15)
8781 iftype = WPA_IF_P2P_GO;
8782 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8783 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8784 "interface for the group");
8785 return -1;
8786 }
8787
8788 if_addr = wpa_s->pending_interface_addr;
8789 } else if (wpa_s->p2p_mgmt)
8790 if_addr = wpa_s->parent->own_addr;
8791 else
8792 if_addr = wpa_s->own_addr;
8793
8794 wpa_s->p2p_nfc_tag_enabled = enabled;
8795
8796 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8797 struct hostapd_data *hapd;
8798 if (iface->ap_iface == NULL)
8799 continue;
8800 hapd = iface->ap_iface->bss[0];
8801 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8802 hapd->conf->wps_nfc_dh_pubkey =
8803 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8804 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8805 hapd->conf->wps_nfc_dh_privkey =
8806 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8807 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8808 hapd->conf->wps_nfc_dev_pw =
8809 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8810 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8811
8812 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8813 wpa_dbg(iface, MSG_DEBUG,
8814 "P2P: Failed to enable NFC Tag for GO");
8815 }
8816 }
8817 p2p_set_authorized_oob_dev_pw_id(
8818 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8819 if_addr);
8820
8821 return 0;
8822 }
8823
8824 #endif /* CONFIG_WPS_NFC */
8825
8826
wpas_p2p_optimize_listen_channel(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)8827 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8828 struct wpa_used_freq_data *freqs,
8829 unsigned int num)
8830 {
8831 u8 curr_chan, cand, chan;
8832 unsigned int i;
8833
8834 /*
8835 * If possible, optimize the Listen channel to be a channel that is
8836 * already used by one of the other interfaces.
8837 */
8838 if (!wpa_s->conf->p2p_optimize_listen_chan)
8839 return;
8840
8841 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8842 return;
8843
8844 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8845 for (i = 0, cand = 0; i < num; i++) {
8846 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8847 if (curr_chan == chan) {
8848 cand = 0;
8849 break;
8850 }
8851
8852 if (chan == 1 || chan == 6 || chan == 11)
8853 cand = chan;
8854 }
8855
8856 if (cand) {
8857 wpa_dbg(wpa_s, MSG_DEBUG,
8858 "P2P: Update Listen channel to %u based on operating channel",
8859 cand);
8860 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8861 }
8862 }
8863
8864
wpas_p2p_move_go_csa(struct wpa_supplicant * wpa_s)8865 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8866 {
8867 struct hostapd_config *conf;
8868 struct p2p_go_neg_results params;
8869 struct csa_settings csa_settings;
8870 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8871 int old_freq = current_ssid->frequency;
8872 int ret;
8873
8874 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8875 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8876 return -1;
8877 }
8878
8879 /*
8880 * TODO: This function may not always work correctly. For example,
8881 * when we have a running GO and a BSS on a DFS channel.
8882 */
8883 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) {
8884 wpa_dbg(wpa_s, MSG_DEBUG,
8885 "P2P CSA: Failed to select new frequency for GO");
8886 return -1;
8887 }
8888
8889 if (current_ssid->frequency == params.freq) {
8890 wpa_dbg(wpa_s, MSG_DEBUG,
8891 "P2P CSA: Selected same frequency - not moving GO");
8892 return 0;
8893 }
8894
8895 conf = hostapd_config_defaults();
8896 if (!conf) {
8897 wpa_dbg(wpa_s, MSG_DEBUG,
8898 "P2P CSA: Failed to allocate default config");
8899 return -1;
8900 }
8901
8902 current_ssid->frequency = params.freq;
8903 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8904 wpa_dbg(wpa_s, MSG_DEBUG,
8905 "P2P CSA: Failed to create new GO config");
8906 ret = -1;
8907 goto out;
8908 }
8909
8910 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8911 wpa_dbg(wpa_s, MSG_DEBUG,
8912 "P2P CSA: CSA to a different band is not supported");
8913 ret = -1;
8914 goto out;
8915 }
8916
8917 os_memset(&csa_settings, 0, sizeof(csa_settings));
8918 csa_settings.cs_count = P2P_GO_CSA_COUNT;
8919 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8920 csa_settings.freq_params.freq = params.freq;
8921 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8922 csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8923 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8924
8925 if (conf->ieee80211ac) {
8926 int freq1 = 0, freq2 = 0;
8927 u8 chan, opclass;
8928
8929 if (ieee80211_freq_to_channel_ext(params.freq,
8930 conf->secondary_channel,
8931 conf->vht_oper_chwidth,
8932 &opclass, &chan) ==
8933 NUM_HOSTAPD_MODES) {
8934 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8935 ret = -1;
8936 goto out;
8937 }
8938
8939 if (conf->vht_oper_centr_freq_seg0_idx)
8940 freq1 = ieee80211_chan_to_freq(
8941 NULL, opclass,
8942 conf->vht_oper_centr_freq_seg0_idx);
8943
8944 if (conf->vht_oper_centr_freq_seg1_idx)
8945 freq2 = ieee80211_chan_to_freq(
8946 NULL, opclass,
8947 conf->vht_oper_centr_freq_seg1_idx);
8948
8949 if (freq1 < 0 || freq2 < 0) {
8950 wpa_dbg(wpa_s, MSG_DEBUG,
8951 "P2P CSA: Selected invalid VHT center freqs");
8952 ret = -1;
8953 goto out;
8954 }
8955
8956 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8957 csa_settings.freq_params.center_freq1 = freq1;
8958 csa_settings.freq_params.center_freq2 = freq2;
8959
8960 switch (conf->vht_oper_chwidth) {
8961 case VHT_CHANWIDTH_80MHZ:
8962 case VHT_CHANWIDTH_80P80MHZ:
8963 csa_settings.freq_params.bandwidth = 80;
8964 break;
8965 case VHT_CHANWIDTH_160MHZ:
8966 csa_settings.freq_params.bandwidth = 160;
8967 break;
8968 }
8969 }
8970
8971 ret = ap_switch_channel(wpa_s, &csa_settings);
8972 out:
8973 current_ssid->frequency = old_freq;
8974 hostapd_config_free(conf);
8975 return ret;
8976 }
8977
8978
wpas_p2p_move_go_no_csa(struct wpa_supplicant * wpa_s)8979 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8980 {
8981 struct p2p_go_neg_results params;
8982 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8983
8984 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8985
8986 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8987 current_ssid->frequency);
8988
8989 /* Stop the AP functionality */
8990 /* TODO: Should do this in a way that does not indicated to possible
8991 * P2P Clients in the group that the group is terminated. */
8992 wpa_supplicant_ap_deinit(wpa_s);
8993
8994 /* Reselect the GO frequency */
8995 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) {
8996 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8997 wpas_p2p_group_delete(wpa_s,
8998 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8999 return;
9000 }
9001 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
9002 params.freq);
9003
9004 if (params.freq &&
9005 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
9006 wpa_printf(MSG_DEBUG,
9007 "P2P: Selected freq (%u MHz) is not valid for P2P",
9008 params.freq);
9009 wpas_p2p_group_delete(wpa_s,
9010 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9011 return;
9012 }
9013
9014 /* Update the frequency */
9015 current_ssid->frequency = params.freq;
9016 wpa_s->connect_without_scan = current_ssid;
9017 wpa_s->reassociate = 1;
9018 wpa_s->disconnected = 0;
9019 wpa_supplicant_req_scan(wpa_s, 0, 0);
9020 }
9021
9022
wpas_p2p_move_go(void * eloop_ctx,void * timeout_ctx)9023 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
9024 {
9025 struct wpa_supplicant *wpa_s = eloop_ctx;
9026
9027 if (!wpa_s->ap_iface || !wpa_s->current_ssid)
9028 return;
9029
9030 wpas_p2p_go_update_common_freqs(wpa_s);
9031
9032 /* Do not move GO in the middle of a CSA */
9033 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9034 wpa_printf(MSG_DEBUG,
9035 "P2P: CSA is in progress - not moving GO");
9036 return;
9037 }
9038
9039 /*
9040 * First, try a channel switch flow. If it is not supported or fails,
9041 * take down the GO and bring it up again.
9042 */
9043 if (wpas_p2p_move_go_csa(wpa_s) < 0)
9044 wpas_p2p_move_go_no_csa(wpa_s);
9045 }
9046
9047
wpas_p2p_reconsider_moving_go(void * eloop_ctx,void * timeout_ctx)9048 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9049 {
9050 struct wpa_supplicant *wpa_s = eloop_ctx;
9051 struct wpa_used_freq_data *freqs = NULL;
9052 unsigned int num = wpa_s->num_multichan_concurrent;
9053
9054 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9055 if (!freqs)
9056 return;
9057
9058 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9059
9060 /* Previous attempt to move a GO was not possible -- try again. */
9061 wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9062 WPAS_P2P_CHANNEL_UPDATE_ANY);
9063
9064 os_free(freqs);
9065 }
9066
9067
9068 /*
9069 * Consider moving a GO from its currently used frequency:
9070 * 1. It is possible that due to regulatory consideration the frequency
9071 * can no longer be used and there is a need to evacuate the GO.
9072 * 2. It is possible that due to MCC considerations, it would be preferable
9073 * to move the GO to a channel that is currently used by some other
9074 * station interface.
9075 *
9076 * In case a frequency that became invalid is once again valid, cancel a
9077 * previously initiated GO frequency change.
9078 */
wpas_p2p_consider_moving_one_go(struct wpa_supplicant * wpa_s,struct wpa_used_freq_data * freqs,unsigned int num)9079 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9080 struct wpa_used_freq_data *freqs,
9081 unsigned int num)
9082 {
9083 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9084 unsigned int timeout;
9085 int freq;
9086 int dfs_offload;
9087
9088 wpas_p2p_go_update_common_freqs(wpa_s);
9089
9090 freq = wpa_s->current_ssid->frequency;
9091 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
9092 ieee80211_is_dfs(freq);
9093 for (i = 0, invalid_freq = 0; i < num; i++) {
9094 if (freqs[i].freq == freq) {
9095 flags = freqs[i].flags;
9096
9097 /* The channel is invalid, must change it */
9098 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
9099 !dfs_offload) {
9100 wpa_dbg(wpa_s, MSG_DEBUG,
9101 "P2P: Freq=%d MHz no longer valid for GO",
9102 freq);
9103 invalid_freq = 1;
9104 }
9105 } else if (freqs[i].flags == 0) {
9106 /* Freq is not used by any other station interface */
9107 continue;
9108 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9109 freqs[i].freq) && !dfs_offload) {
9110 /* Freq is not valid for P2P use cases */
9111 continue;
9112 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9113 P2P_GO_FREQ_MOVE_SCM) {
9114 policy_move = 1;
9115 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9116 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9117 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9118 policy_move = 1;
9119 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9120 P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9121 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9122 if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9123 policy_move = 1;
9124 } else if ((wpa_s->drv_flags &
9125 WPA_DRIVER_FLAGS_AP_CSA) &&
9126 wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9127 u8 chan;
9128
9129 /*
9130 * We do not support CSA between bands, so move
9131 * GO only within the same band.
9132 */
9133 if (wpa_s->ap_iface->current_mode->mode ==
9134 ieee80211_freq_to_chan(freqs[i].freq,
9135 &chan))
9136 policy_move = 1;
9137 }
9138 }
9139 }
9140
9141 wpa_dbg(wpa_s, MSG_DEBUG,
9142 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9143 invalid_freq, policy_move, flags);
9144
9145 /*
9146 * The channel is valid, or we are going to have a policy move, so
9147 * cancel timeout.
9148 */
9149 if (!invalid_freq || policy_move) {
9150 wpa_dbg(wpa_s, MSG_DEBUG,
9151 "P2P: Cancel a GO move from freq=%d MHz", freq);
9152 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9153
9154 if (wpas_p2p_in_progress(wpa_s)) {
9155 wpa_dbg(wpa_s, MSG_DEBUG,
9156 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9157 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9158 wpa_s, NULL);
9159 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9160 wpas_p2p_reconsider_moving_go,
9161 wpa_s, NULL);
9162 return;
9163 }
9164 }
9165
9166 if (!invalid_freq && (!policy_move || flags != 0)) {
9167 wpa_dbg(wpa_s, MSG_DEBUG,
9168 "P2P: Not initiating a GO frequency change");
9169 return;
9170 }
9171
9172 /*
9173 * Do not consider moving GO if it is in the middle of a CSA. When the
9174 * CSA is finished this flow should be retriggered.
9175 */
9176 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9177 wpa_dbg(wpa_s, MSG_DEBUG,
9178 "P2P: Not initiating a GO frequency change - CSA is in progress");
9179 return;
9180 }
9181
9182 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9183 timeout = P2P_GO_FREQ_CHANGE_TIME;
9184 else
9185 timeout = 0;
9186
9187 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9188 freq, timeout);
9189 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9190 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9191 }
9192
9193
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)9194 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9195 struct wpa_used_freq_data *freqs,
9196 unsigned int num,
9197 enum wpas_p2p_channel_update_trig trig)
9198 {
9199 struct wpa_supplicant *ifs;
9200
9201 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9202 NULL);
9203
9204 /*
9205 * Travers all the radio interfaces, and for each GO interface, check
9206 * if there is a need to move the GO from the frequency it is using,
9207 * or in case the frequency is valid again, cancel the evacuation flow.
9208 */
9209 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9210 radio_list) {
9211 if (ifs->current_ssid == NULL ||
9212 ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9213 continue;
9214
9215 /*
9216 * The GO was just started or completed channel switch, no need
9217 * to move it.
9218 */
9219 if (wpa_s == ifs &&
9220 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9221 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9222 wpa_dbg(wpa_s, MSG_DEBUG,
9223 "P2P: GO move - schedule re-consideration");
9224 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9225 wpas_p2p_reconsider_moving_go,
9226 wpa_s, NULL);
9227 continue;
9228 }
9229
9230 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9231 }
9232 }
9233
9234
wpas_p2p_indicate_state_change(struct wpa_supplicant * wpa_s)9235 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9236 {
9237 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9238 return;
9239
9240 wpas_p2p_update_channel_list(wpa_s,
9241 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9242 }
9243
9244
wpas_p2p_deinit_iface(struct wpa_supplicant * wpa_s)9245 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9246 {
9247 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9248 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9249 "the management interface is being removed");
9250 wpas_p2p_deinit_global(wpa_s->global);
9251 }
9252 }
9253
9254
wpas_p2p_ap_deinit(struct wpa_supplicant * wpa_s)9255 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9256 {
9257 if (wpa_s->ap_iface->bss)
9258 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9259 wpas_p2p_group_deinit(wpa_s);
9260 }
9261
9262
wpas_p2p_lo_start(struct wpa_supplicant * wpa_s,unsigned int freq,unsigned int period,unsigned int interval,unsigned int count)9263 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9264 unsigned int period, unsigned int interval,
9265 unsigned int count)
9266 {
9267 struct p2p_data *p2p = wpa_s->global->p2p;
9268 u8 *device_types;
9269 size_t dev_types_len;
9270 struct wpabuf *buf;
9271 int ret;
9272
9273 if (wpa_s->p2p_lo_started) {
9274 wpa_dbg(wpa_s, MSG_DEBUG,
9275 "P2P Listen offload is already started");
9276 return 0;
9277 }
9278
9279 if (wpa_s->global->p2p == NULL ||
9280 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9281 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9282 return -1;
9283 }
9284
9285 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9286 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9287 freq);
9288 return -1;
9289 }
9290
9291 /* Get device type */
9292 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9293 WPS_DEV_TYPE_LEN;
9294 device_types = os_malloc(dev_types_len);
9295 if (!device_types)
9296 return -1;
9297 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9298 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9299 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9300
9301 /* Get Probe Response IE(s) */
9302 buf = p2p_build_probe_resp_template(p2p, freq);
9303 if (!buf) {
9304 os_free(device_types);
9305 return -1;
9306 }
9307
9308 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9309 device_types, dev_types_len,
9310 wpabuf_mhead_u8(buf), wpabuf_len(buf));
9311 if (ret < 0)
9312 wpa_dbg(wpa_s, MSG_DEBUG,
9313 "P2P: Failed to start P2P listen offload");
9314
9315 os_free(device_types);
9316 wpabuf_free(buf);
9317
9318 if (ret == 0) {
9319 wpa_s->p2p_lo_started = 1;
9320
9321 /* Stop current P2P listen if any */
9322 wpas_stop_listen(wpa_s);
9323 }
9324
9325 return ret;
9326 }
9327
9328
wpas_p2p_lo_stop(struct wpa_supplicant * wpa_s)9329 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9330 {
9331 int ret;
9332
9333 if (!wpa_s->p2p_lo_started)
9334 return 0;
9335
9336 ret = wpa_drv_p2p_lo_stop(wpa_s);
9337 if (ret < 0)
9338 wpa_dbg(wpa_s, MSG_DEBUG,
9339 "P2P: Failed to stop P2P listen offload");
9340
9341 wpa_s->p2p_lo_started = 0;
9342 return ret;
9343 }
9344