Line data Source code
1 : /*
2 : * Wi-Fi Direct - P2P Invitation procedure
3 : * Copyright (c) 2010, Atheros Communications
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 :
11 : #include "common.h"
12 : #include "common/ieee802_11_defs.h"
13 : #include "p2p_i.h"
14 : #include "p2p.h"
15 :
16 :
17 26 : static struct wpabuf * p2p_build_invitation_req(struct p2p_data *p2p,
18 : struct p2p_device *peer,
19 : const u8 *go_dev_addr,
20 : int dev_pw_id)
21 : {
22 : struct wpabuf *buf;
23 : u8 *len;
24 : const u8 *dev_addr;
25 26 : size_t extra = 0;
26 :
27 : #ifdef CONFIG_WIFI_DISPLAY
28 26 : struct wpabuf *wfd_ie = p2p->wfd_ie_invitation;
29 26 : if (wfd_ie && p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
30 : size_t i;
31 0 : for (i = 0; i < p2p->num_groups; i++) {
32 0 : struct p2p_group *g = p2p->groups[i];
33 : struct wpabuf *ie;
34 0 : if (os_memcmp(p2p_group_get_interface_addr(g),
35 : p2p->inv_bssid, ETH_ALEN) != 0)
36 0 : continue;
37 0 : ie = p2p_group_get_wfd_ie(g);
38 0 : if (ie) {
39 0 : wfd_ie = ie;
40 0 : break;
41 : }
42 : }
43 : }
44 26 : if (wfd_ie)
45 0 : extra = wpabuf_len(wfd_ie);
46 : #endif /* CONFIG_WIFI_DISPLAY */
47 :
48 26 : buf = wpabuf_alloc(1000 + extra);
49 26 : if (buf == NULL)
50 0 : return NULL;
51 :
52 26 : peer->dialog_token++;
53 26 : if (peer->dialog_token == 0)
54 0 : peer->dialog_token = 1;
55 26 : p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_REQ,
56 26 : peer->dialog_token);
57 :
58 26 : len = p2p_buf_add_ie_hdr(buf);
59 26 : if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO || !p2p->inv_persistent)
60 7 : p2p_buf_add_config_timeout(buf, 0, 0);
61 : else
62 19 : p2p_buf_add_config_timeout(buf, p2p->go_timeout,
63 19 : p2p->client_timeout);
64 26 : p2p_buf_add_invitation_flags(buf, p2p->inv_persistent ?
65 : P2P_INVITATION_FLAGS_TYPE : 0);
66 36 : if (p2p->inv_role != P2P_INVITE_ROLE_CLIENT ||
67 10 : !(peer->flags & P2P_DEV_NO_PREF_CHAN))
68 38 : p2p_buf_add_operating_channel(buf, p2p->cfg->country,
69 19 : p2p->op_reg_class,
70 19 : p2p->op_channel);
71 26 : if (p2p->inv_bssid_set)
72 16 : p2p_buf_add_group_bssid(buf, p2p->inv_bssid);
73 26 : p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels);
74 26 : if (go_dev_addr)
75 7 : dev_addr = go_dev_addr;
76 19 : else if (p2p->inv_role == P2P_INVITE_ROLE_CLIENT)
77 10 : dev_addr = peer->info.p2p_device_addr;
78 : else
79 9 : dev_addr = p2p->cfg->dev_addr;
80 26 : p2p_buf_add_group_id(buf, dev_addr, p2p->inv_ssid, p2p->inv_ssid_len);
81 26 : p2p_buf_add_device_info(buf, p2p, peer);
82 26 : p2p_buf_update_ie_hdr(buf, len);
83 :
84 : #ifdef CONFIG_WIFI_DISPLAY
85 26 : if (wfd_ie)
86 0 : wpabuf_put_buf(buf, wfd_ie);
87 : #endif /* CONFIG_WIFI_DISPLAY */
88 :
89 26 : if (dev_pw_id >= 0) {
90 : /* WSC IE in Invitation Request for NFC static handover */
91 2 : p2p_build_wps_ie(p2p, buf, dev_pw_id, 0);
92 : }
93 :
94 26 : return buf;
95 : }
96 :
97 :
98 38 : static struct wpabuf * p2p_build_invitation_resp(struct p2p_data *p2p,
99 : struct p2p_device *peer,
100 : u8 dialog_token, u8 status,
101 : const u8 *group_bssid,
102 : u8 reg_class, u8 channel,
103 : struct p2p_channels *channels)
104 : {
105 : struct wpabuf *buf;
106 : u8 *len;
107 38 : size_t extra = 0;
108 :
109 : #ifdef CONFIG_WIFI_DISPLAY
110 38 : struct wpabuf *wfd_ie = p2p->wfd_ie_invitation;
111 38 : if (wfd_ie && group_bssid) {
112 : size_t i;
113 0 : for (i = 0; i < p2p->num_groups; i++) {
114 0 : struct p2p_group *g = p2p->groups[i];
115 : struct wpabuf *ie;
116 0 : if (os_memcmp(p2p_group_get_interface_addr(g),
117 : group_bssid, ETH_ALEN) != 0)
118 0 : continue;
119 0 : ie = p2p_group_get_wfd_ie(g);
120 0 : if (ie) {
121 0 : wfd_ie = ie;
122 0 : break;
123 : }
124 : }
125 : }
126 38 : if (wfd_ie)
127 0 : extra = wpabuf_len(wfd_ie);
128 : #endif /* CONFIG_WIFI_DISPLAY */
129 :
130 38 : buf = wpabuf_alloc(1000 + extra);
131 38 : if (buf == NULL)
132 0 : return NULL;
133 :
134 38 : p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_RESP,
135 : dialog_token);
136 :
137 38 : len = p2p_buf_add_ie_hdr(buf);
138 38 : p2p_buf_add_status(buf, status);
139 38 : p2p_buf_add_config_timeout(buf, 0, 0); /* FIX */
140 38 : if (reg_class && channel)
141 20 : p2p_buf_add_operating_channel(buf, p2p->cfg->country,
142 : reg_class, channel);
143 38 : if (group_bssid)
144 9 : p2p_buf_add_group_bssid(buf, group_bssid);
145 38 : if (channels)
146 20 : p2p_buf_add_channel_list(buf, p2p->cfg->country, channels);
147 38 : p2p_buf_update_ie_hdr(buf, len);
148 :
149 : #ifdef CONFIG_WIFI_DISPLAY
150 38 : if (wfd_ie)
151 0 : wpabuf_put_buf(buf, wfd_ie);
152 : #endif /* CONFIG_WIFI_DISPLAY */
153 :
154 38 : return buf;
155 : }
156 :
157 :
158 67 : void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
159 : const u8 *data, size_t len, int rx_freq)
160 : {
161 : struct p2p_device *dev;
162 : struct p2p_message msg;
163 67 : struct wpabuf *resp = NULL;
164 67 : u8 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
165 : int freq;
166 67 : int go = 0;
167 : u8 group_bssid[ETH_ALEN], *bssid;
168 67 : int op_freq = 0;
169 67 : u8 reg_class = 0, channel = 0;
170 67 : struct p2p_channels intersection, *channels = NULL;
171 : int persistent;
172 :
173 67 : os_memset(group_bssid, 0, sizeof(group_bssid));
174 :
175 402 : p2p_dbg(p2p, "Received Invitation Request from " MACSTR " (freq=%d)",
176 402 : MAC2STR(sa), rx_freq);
177 :
178 67 : if (p2p_parse(data, len, &msg))
179 96 : return;
180 :
181 38 : dev = p2p_get_device(p2p, sa);
182 38 : if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
183 36 : p2p_dbg(p2p, "Invitation Request from unknown peer " MACSTR,
184 36 : MAC2STR(sa));
185 :
186 6 : if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1,
187 : 0)) {
188 6 : p2p_dbg(p2p, "Invitation Request add device failed "
189 6 : MACSTR, MAC2STR(sa));
190 1 : status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
191 1 : goto fail;
192 : }
193 :
194 5 : dev = p2p_get_device(p2p, sa);
195 5 : if (dev == NULL) {
196 0 : p2p_dbg(p2p, "Reject Invitation Request from unknown peer "
197 0 : MACSTR, MAC2STR(sa));
198 0 : status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
199 0 : goto fail;
200 : }
201 : }
202 :
203 37 : if (!msg.group_id || !msg.channel_list) {
204 18 : p2p_dbg(p2p, "Mandatory attribute missing in Invitation Request from "
205 18 : MACSTR, MAC2STR(sa));
206 3 : status = P2P_SC_FAIL_INVALID_PARAMS;
207 3 : goto fail;
208 : }
209 :
210 34 : if (msg.invitation_flags)
211 33 : persistent = *msg.invitation_flags & P2P_INVITATION_FLAGS_TYPE;
212 : else {
213 : /* Invitation Flags is a mandatory attribute starting from P2P
214 : * spec 1.06. As a backwards compatibility mechanism, assume
215 : * the request was for a persistent group if the attribute is
216 : * missing.
217 : */
218 1 : p2p_dbg(p2p, "Mandatory Invitation Flags attribute missing from Invitation Request");
219 1 : persistent = 1;
220 : }
221 :
222 34 : if (p2p_peer_channels_check(p2p, &p2p->cfg->channels, dev,
223 34 : msg.channel_list, msg.channel_list_len) <
224 : 0) {
225 1 : p2p_dbg(p2p, "No common channels found");
226 1 : status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
227 1 : goto fail;
228 : }
229 :
230 33 : p2p_channels_intersect(&p2p->cfg->channels, &dev->channels,
231 : &intersection);
232 :
233 33 : if (p2p->cfg->invitation_process) {
234 167 : status = p2p->cfg->invitation_process(
235 33 : p2p->cfg->cb_ctx, sa, msg.group_bssid, msg.group_id,
236 66 : msg.group_id + ETH_ALEN, msg.group_id_len - ETH_ALEN,
237 : &go, group_bssid, &op_freq, persistent, &intersection,
238 35 : msg.dev_password_id_present ? msg.dev_password_id : -1);
239 : }
240 :
241 33 : if (op_freq) {
242 2 : p2p_dbg(p2p, "Invitation processing forced frequency %d MHz",
243 : op_freq);
244 2 : if (p2p_freq_to_channel(op_freq, ®_class, &channel) < 0) {
245 0 : p2p_dbg(p2p, "Unknown forced freq %d MHz from invitation_process()",
246 : op_freq);
247 0 : status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
248 0 : goto fail;
249 : }
250 :
251 2 : if (!p2p_channels_includes(&intersection, reg_class, channel))
252 : {
253 0 : p2p_dbg(p2p, "forced freq %d MHz not in the supported channels interaction",
254 : op_freq);
255 0 : status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
256 0 : goto fail;
257 : }
258 :
259 2 : if (status == P2P_SC_SUCCESS)
260 2 : channels = &intersection;
261 : } else {
262 31 : p2p_dbg(p2p, "No forced channel from invitation processing - figure out best one to use");
263 :
264 : /* Default to own configuration as a starting point */
265 31 : p2p->op_reg_class = p2p->cfg->op_reg_class;
266 31 : p2p->op_channel = p2p->cfg->op_channel;
267 62 : p2p_dbg(p2p, "Own default op_class %d channel %d",
268 62 : p2p->op_reg_class, p2p->op_channel);
269 :
270 : /* Use peer preference if specified and compatible */
271 31 : if (msg.operating_channel) {
272 : int req_freq;
273 50 : req_freq = p2p_channel_to_freq(
274 25 : msg.operating_channel[3],
275 25 : msg.operating_channel[4]);
276 25 : p2p_dbg(p2p, "Peer operating channel preference: %d MHz",
277 : req_freq);
278 50 : if (req_freq > 0 &&
279 50 : p2p_channels_includes(&intersection,
280 25 : msg.operating_channel[3],
281 25 : msg.operating_channel[4])) {
282 25 : p2p->op_reg_class = msg.operating_channel[3];
283 25 : p2p->op_channel = msg.operating_channel[4];
284 50 : p2p_dbg(p2p, "Use peer preference op_class %d channel %d",
285 50 : p2p->op_reg_class, p2p->op_channel);
286 : } else {
287 0 : p2p_dbg(p2p, "Cannot use peer channel preference");
288 : }
289 : }
290 :
291 : /* Reselect the channel only for the case of the GO */
292 38 : if (go &&
293 7 : !p2p_channels_includes(&intersection, p2p->op_reg_class,
294 7 : p2p->op_channel)) {
295 0 : p2p_dbg(p2p, "Initially selected channel (op_class %d channel %d) not in channel intersection - try to reselect",
296 0 : p2p->op_reg_class, p2p->op_channel);
297 0 : p2p_reselect_channel(p2p, &intersection);
298 0 : p2p_dbg(p2p, "Re-selection result: op_class %d channel %d",
299 0 : p2p->op_reg_class, p2p->op_channel);
300 0 : if (!p2p_channels_includes(&intersection,
301 0 : p2p->op_reg_class,
302 0 : p2p->op_channel)) {
303 0 : p2p_dbg(p2p, "Peer does not support selected operating channel (reg_class=%u channel=%u)",
304 0 : p2p->op_reg_class, p2p->op_channel);
305 0 : status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
306 0 : goto fail;
307 : }
308 37 : } else if (go && !(dev->flags & P2P_DEV_FORCE_FREQ) &&
309 6 : !p2p->cfg->cfg_op_channel) {
310 12 : p2p_dbg(p2p, "Try to reselect channel selection with peer information received; previously selected op_class %u channel %u",
311 12 : p2p->op_reg_class, p2p->op_channel);
312 6 : p2p_reselect_channel(p2p, &intersection);
313 : }
314 :
315 31 : op_freq = p2p_channel_to_freq(p2p->op_reg_class,
316 31 : p2p->op_channel);
317 31 : if (op_freq < 0) {
318 0 : p2p_dbg(p2p, "Unknown operational channel (country=%c%c reg_class=%u channel=%u)",
319 0 : p2p->cfg->country[0], p2p->cfg->country[1],
320 0 : p2p->op_reg_class, p2p->op_channel);
321 0 : status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
322 0 : goto fail;
323 : }
324 31 : p2p_dbg(p2p, "Selected operating channel - %d MHz", op_freq);
325 :
326 31 : if (status == P2P_SC_SUCCESS) {
327 18 : reg_class = p2p->op_reg_class;
328 18 : channel = p2p->op_channel;
329 18 : channels = &intersection;
330 : }
331 : }
332 :
333 : fail:
334 38 : if (go && status == P2P_SC_SUCCESS && !is_zero_ether_addr(group_bssid))
335 9 : bssid = group_bssid;
336 : else
337 29 : bssid = NULL;
338 38 : resp = p2p_build_invitation_resp(p2p, dev, msg.dialog_token, status,
339 : bssid, reg_class, channel, channels);
340 :
341 38 : if (resp == NULL)
342 0 : goto out;
343 :
344 38 : if (rx_freq > 0)
345 38 : freq = rx_freq;
346 : else
347 0 : freq = p2p_channel_to_freq(p2p->cfg->reg_class,
348 0 : p2p->cfg->channel);
349 38 : if (freq < 0) {
350 0 : p2p_dbg(p2p, "Unknown regulatory class/channel");
351 0 : goto out;
352 : }
353 :
354 : /*
355 : * Store copy of invitation data to be used when processing TX status
356 : * callback for the Acton frame.
357 : */
358 38 : os_memcpy(p2p->inv_sa, sa, ETH_ALEN);
359 38 : if (msg.group_bssid) {
360 26 : os_memcpy(p2p->inv_group_bssid, msg.group_bssid, ETH_ALEN);
361 26 : p2p->inv_group_bssid_ptr = p2p->inv_group_bssid;
362 : } else
363 12 : p2p->inv_group_bssid_ptr = NULL;
364 38 : if (msg.group_id) {
365 35 : if (msg.group_id_len - ETH_ALEN <= 32) {
366 35 : os_memcpy(p2p->inv_ssid, msg.group_id + ETH_ALEN,
367 : msg.group_id_len - ETH_ALEN);
368 35 : p2p->inv_ssid_len = msg.group_id_len - ETH_ALEN;
369 : }
370 35 : os_memcpy(p2p->inv_go_dev_addr, msg.group_id, ETH_ALEN);
371 : } else {
372 3 : p2p->inv_ssid_len = 0;
373 3 : os_memset(p2p->inv_go_dev_addr, 0, ETH_ALEN);
374 : }
375 38 : p2p->inv_status = status;
376 38 : p2p->inv_op_freq = op_freq;
377 :
378 38 : p2p->pending_action_state = P2P_PENDING_INVITATION_RESPONSE;
379 76 : if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr,
380 38 : p2p->cfg->dev_addr,
381 38 : wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
382 0 : p2p_dbg(p2p, "Failed to send Action frame");
383 : }
384 :
385 : out:
386 38 : wpabuf_free(resp);
387 38 : p2p_parse_free(&msg);
388 : }
389 :
390 :
391 25 : void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
392 : const u8 *data, size_t len)
393 : {
394 : struct p2p_device *dev;
395 : struct p2p_message msg;
396 25 : struct p2p_channels intersection, *channels = NULL;
397 :
398 150 : p2p_dbg(p2p, "Received Invitation Response from " MACSTR,
399 150 : MAC2STR(sa));
400 :
401 25 : dev = p2p_get_device(p2p, sa);
402 25 : if (dev == NULL) {
403 0 : p2p_dbg(p2p, "Ignore Invitation Response from unknown peer "
404 0 : MACSTR, MAC2STR(sa));
405 0 : return;
406 : }
407 :
408 25 : if (dev != p2p->invite_peer) {
409 0 : p2p_dbg(p2p, "Ignore unexpected Invitation Response from peer "
410 0 : MACSTR, MAC2STR(sa));
411 0 : return;
412 : }
413 :
414 25 : if (p2p_parse(data, len, &msg))
415 0 : return;
416 :
417 25 : if (!msg.status) {
418 0 : p2p_dbg(p2p, "Mandatory Status attribute missing in Invitation Response from "
419 0 : MACSTR, MAC2STR(sa));
420 0 : p2p_parse_free(&msg);
421 0 : return;
422 : }
423 :
424 25 : if (!msg.channel_list && *msg.status == P2P_SC_SUCCESS) {
425 0 : p2p_dbg(p2p, "Mandatory Channel List attribute missing in Invitation Response from "
426 0 : MACSTR, MAC2STR(sa));
427 : #ifdef CONFIG_P2P_STRICT
428 : p2p_parse_free(&msg);
429 : return;
430 : #endif /* CONFIG_P2P_STRICT */
431 : /* Try to survive without peer channel list */
432 0 : channels = &p2p->channels;
433 25 : } else if (!msg.channel_list) {
434 : /* Non-success cases are not required to include Channel List */
435 6 : channels = &p2p->channels;
436 19 : } else if (p2p_peer_channels_check(p2p, &p2p->channels, dev,
437 : msg.channel_list,
438 19 : msg.channel_list_len) < 0) {
439 0 : p2p_dbg(p2p, "No common channels found");
440 0 : p2p_parse_free(&msg);
441 0 : return;
442 : } else {
443 19 : p2p_channels_intersect(&p2p->channels, &dev->channels,
444 : &intersection);
445 19 : channels = &intersection;
446 : }
447 :
448 25 : if (p2p->cfg->invitation_result) {
449 25 : int peer_oper_freq = 0;
450 25 : int freq = p2p_channel_to_freq(p2p->op_reg_class,
451 25 : p2p->op_channel);
452 25 : if (freq < 0)
453 0 : freq = 0;
454 :
455 25 : if (msg.operating_channel) {
456 38 : peer_oper_freq = p2p_channel_to_freq(
457 19 : msg.operating_channel[3],
458 19 : msg.operating_channel[4]);
459 19 : if (peer_oper_freq < 0)
460 0 : peer_oper_freq = 0;
461 : }
462 :
463 25 : p2p->cfg->invitation_result(p2p->cfg->cb_ctx, *msg.status,
464 : msg.group_bssid, channels, sa,
465 : freq, peer_oper_freq);
466 : }
467 :
468 25 : p2p_parse_free(&msg);
469 :
470 25 : p2p_clear_timeout(p2p);
471 25 : p2p_set_state(p2p, P2P_IDLE);
472 25 : p2p->invite_peer = NULL;
473 : }
474 :
475 :
476 26 : int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
477 : const u8 *go_dev_addr, int dev_pw_id)
478 : {
479 : struct wpabuf *req;
480 : int freq;
481 :
482 26 : freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq;
483 26 : if (freq <= 0)
484 2 : freq = dev->oob_go_neg_freq;
485 26 : if (freq <= 0) {
486 0 : p2p_dbg(p2p, "No Listen/Operating frequency known for the peer "
487 : MACSTR " to send Invitation Request",
488 0 : MAC2STR(dev->info.p2p_device_addr));
489 0 : return -1;
490 : }
491 :
492 26 : req = p2p_build_invitation_req(p2p, dev, go_dev_addr, dev_pw_id);
493 26 : if (req == NULL)
494 0 : return -1;
495 26 : if (p2p->state != P2P_IDLE)
496 1 : p2p_stop_listen_for_freq(p2p, freq);
497 26 : p2p_dbg(p2p, "Sending Invitation Request");
498 26 : p2p_set_state(p2p, P2P_INVITE);
499 26 : p2p->pending_action_state = P2P_PENDING_INVITATION_REQUEST;
500 26 : p2p->invite_peer = dev;
501 26 : dev->invitation_reqs++;
502 52 : if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr,
503 26 : p2p->cfg->dev_addr, dev->info.p2p_device_addr,
504 26 : wpabuf_head(req), wpabuf_len(req), 500) < 0) {
505 0 : p2p_dbg(p2p, "Failed to send Action frame");
506 : /* Use P2P find to recover and retry */
507 0 : p2p_set_timeout(p2p, 0, 0);
508 : } else {
509 26 : dev->flags |= P2P_DEV_WAIT_INV_REQ_ACK;
510 : }
511 :
512 26 : wpabuf_free(req);
513 :
514 26 : return 0;
515 : }
516 :
517 :
518 26 : void p2p_invitation_req_cb(struct p2p_data *p2p, int success)
519 : {
520 26 : p2p_dbg(p2p, "Invitation Request TX callback: success=%d", success);
521 :
522 26 : if (p2p->invite_peer == NULL) {
523 0 : p2p_dbg(p2p, "No pending Invite");
524 26 : return;
525 : }
526 :
527 26 : if (success)
528 25 : p2p->invite_peer->flags &= ~P2P_DEV_WAIT_INV_REQ_ACK;
529 :
530 : /*
531 : * Use P2P find, if needed, to find the other device from its listen
532 : * channel.
533 : */
534 26 : p2p_set_state(p2p, P2P_INVITE);
535 26 : p2p_set_timeout(p2p, 0, success ? 500000 : 100000);
536 : }
537 :
538 :
539 37 : void p2p_invitation_resp_cb(struct p2p_data *p2p, int success)
540 : {
541 37 : p2p_dbg(p2p, "Invitation Response TX callback: success=%d", success);
542 37 : p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
543 :
544 37 : if (!success)
545 0 : p2p_dbg(p2p, "Assume Invitation Response was actually received by the peer even though Ack was not reported");
546 :
547 37 : if (p2p->cfg->invitation_received) {
548 148 : p2p->cfg->invitation_received(p2p->cfg->cb_ctx,
549 37 : p2p->inv_sa,
550 37 : p2p->inv_group_bssid_ptr,
551 37 : p2p->inv_ssid, p2p->inv_ssid_len,
552 37 : p2p->inv_go_dev_addr,
553 37 : p2p->inv_status,
554 : p2p->inv_op_freq);
555 : }
556 37 : }
557 :
558 :
559 25 : int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role,
560 : const u8 *bssid, const u8 *ssid, size_t ssid_len,
561 : unsigned int force_freq, const u8 *go_dev_addr,
562 : int persistent_group, unsigned int pref_freq, int dev_pw_id)
563 : {
564 : struct p2p_device *dev;
565 :
566 150 : p2p_dbg(p2p, "Request to invite peer " MACSTR " role=%d persistent=%d "
567 : "force_freq=%u",
568 150 : MAC2STR(peer), role, persistent_group, force_freq);
569 25 : if (bssid)
570 15 : p2p_dbg(p2p, "Invitation for BSSID " MACSTR, MAC2STR(bssid));
571 25 : if (go_dev_addr) {
572 36 : p2p_dbg(p2p, "Invitation for GO Device Address " MACSTR,
573 36 : MAC2STR(go_dev_addr));
574 6 : os_memcpy(p2p->invite_go_dev_addr_buf, go_dev_addr, ETH_ALEN);
575 6 : p2p->invite_go_dev_addr = p2p->invite_go_dev_addr_buf;
576 : } else
577 19 : p2p->invite_go_dev_addr = NULL;
578 25 : wpa_hexdump_ascii(MSG_DEBUG, "Invitation for SSID",
579 : ssid, ssid_len);
580 25 : if (dev_pw_id >= 0) {
581 2 : p2p_dbg(p2p, "Invitation to use Device Password ID %d",
582 : dev_pw_id);
583 : }
584 25 : p2p->invite_dev_pw_id = dev_pw_id;
585 :
586 25 : dev = p2p_get_device(p2p, peer);
587 27 : if (dev == NULL || (dev->listen_freq <= 0 && dev->oper_freq <= 0 &&
588 2 : dev->oob_go_neg_freq <= 0)) {
589 0 : p2p_dbg(p2p, "Cannot invite unknown P2P Device " MACSTR,
590 0 : MAC2STR(peer));
591 0 : return -1;
592 : }
593 :
594 25 : if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
595 : role != P2P_INVITE_ROLE_CLIENT) < 0)
596 0 : return -1;
597 :
598 25 : if (persistent_group && role == P2P_INVITE_ROLE_CLIENT && !force_freq &&
599 : !pref_freq)
600 7 : dev->flags |= P2P_DEV_NO_PREF_CHAN;
601 : else
602 18 : dev->flags &= ~P2P_DEV_NO_PREF_CHAN;
603 :
604 25 : if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
605 0 : if (!(dev->info.dev_capab &
606 : P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
607 0 : p2p_dbg(p2p, "Cannot invite a P2P Device " MACSTR
608 : " that is in a group and is not discoverable",
609 0 : MAC2STR(peer));
610 : }
611 : /* TODO: use device discoverability request through GO */
612 : }
613 :
614 25 : dev->invitation_reqs = 0;
615 :
616 25 : if (p2p->state != P2P_IDLE)
617 2 : p2p_stop_find(p2p);
618 :
619 25 : p2p->inv_role = role;
620 25 : p2p->inv_bssid_set = bssid != NULL;
621 25 : if (bssid)
622 15 : os_memcpy(p2p->inv_bssid, bssid, ETH_ALEN);
623 25 : os_memcpy(p2p->inv_ssid, ssid, ssid_len);
624 25 : p2p->inv_ssid_len = ssid_len;
625 25 : p2p->inv_persistent = persistent_group;
626 25 : return p2p_invite_send(p2p, dev, go_dev_addr, dev_pw_id);
627 : }
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