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EAP: Increase the maximum number of message exchanges
[thirdparty/hostap.git] / wpa_supplicant / rrm.c
CommitLineData
ec493469
AS		 1/*
2 * wpa_supplicant - Radio Measurements
3 * Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi>
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 "utils/common.h"
12#include "utils/eloop.h"
13#include "common/ieee802_11_common.h"
14#include "wpa_supplicant_i.h"
15#include "driver_i.h"
16#include "bss.h"
76196ddb
AS		 17#include "scan.h"
18#include "p2p_supplicant.h"
ec493469
AS		 19
20
21static void wpas_rrm_neighbor_rep_timeout_handler(void *data, void *user_ctx)
22{
23 struct rrm_data *rrm = data;
24
25 if (!rrm->notify_neighbor_rep) {
26 wpa_printf(MSG_ERROR,
27 "RRM: Unexpected neighbor report timeout");
28 return;
29 }
30
31 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report - NONE");
32 rrm->notify_neighbor_rep(rrm->neighbor_rep_cb_ctx, NULL);
33
34 rrm->notify_neighbor_rep = NULL;
35 rrm->neighbor_rep_cb_ctx = NULL;
36}
37
38
39/*
40 * wpas_rrm_reset - Clear and reset all RRM data in wpa_supplicant
41 * @wpa_s: Pointer to wpa_supplicant
42 */
43void wpas_rrm_reset(struct wpa_supplicant *wpa_s)
44{
45 wpa_s->rrm.rrm_used = 0;
46
47 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm,
48 NULL);
49 if (wpa_s->rrm.notify_neighbor_rep)
50 wpas_rrm_neighbor_rep_timeout_handler(&wpa_s->rrm, NULL);
51 wpa_s->rrm.next_neighbor_rep_token = 1;
76196ddb 52 wpas_clear_beacon_rep_data(wpa_s);
ec493469
AS		 53}
54
55
56/*
57 * wpas_rrm_process_neighbor_rep - Handle incoming neighbor report
58 * @wpa_s: Pointer to wpa_supplicant
59 * @report: Neighbor report buffer, prefixed by a 1-byte dialog token
60 * @report_len: Length of neighbor report buffer
61 */
62void wpas_rrm_process_neighbor_rep(struct wpa_supplicant *wpa_s,
63 const u8 *report, size_t report_len)
64{
65 struct wpabuf *neighbor_rep;
66
67 wpa_hexdump(MSG_DEBUG, "RRM: New Neighbor Report", report, report_len);
68 if (report_len < 1)
69 return;
70
71 if (report[0] != wpa_s->rrm.next_neighbor_rep_token - 1) {
72 wpa_printf(MSG_DEBUG,
73 "RRM: Discarding neighbor report with token %d (expected %d)",
74 report[0], wpa_s->rrm.next_neighbor_rep_token - 1);
75 return;
76 }
77
78 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm,
79 NULL);
80
81 if (!wpa_s->rrm.notify_neighbor_rep) {
82 wpa_printf(MSG_ERROR, "RRM: Unexpected neighbor report");
83 return;
84 }
85
86 /* skipping the first byte, which is only an id (dialog token) */
87 neighbor_rep = wpabuf_alloc(report_len - 1);
6657bb15
JM		 88 if (!neighbor_rep) {
89 wpas_rrm_neighbor_rep_timeout_handler(&wpa_s->rrm, NULL);
ec493469 90 return;
6657bb15 91 }
ec493469
AS		 92 wpabuf_put_data(neighbor_rep, report + 1, report_len - 1);
93 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report (token = %d)",
94 report[0]);
95 wpa_s->rrm.notify_neighbor_rep(wpa_s->rrm.neighbor_rep_cb_ctx,
96 neighbor_rep);
97 wpa_s->rrm.notify_neighbor_rep = NULL;
98 wpa_s->rrm.neighbor_rep_cb_ctx = NULL;
99}
100
101
102#if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
103/* Workaround different, undefined for Windows, error codes used here */
104#define ENOTCONN -1
105#define EOPNOTSUPP -1
106#define ECANCELED -1
107#endif
108
109/* Measurement Request element + Location Subject + Maximum Age subelement */
110#define MEASURE_REQUEST_LCI_LEN (3 + 1 + 4)
111/* Measurement Request element + Location Civic Request */
112#define MEASURE_REQUEST_CIVIC_LEN (3 + 5)
113
114
115/**
116 * wpas_rrm_send_neighbor_rep_request - Request a neighbor report from our AP
117 * @wpa_s: Pointer to wpa_supplicant
118 * @ssid: if not null, this is sent in the request. Otherwise, no SSID IE
119 * is sent in the request.
120 * @lci: if set, neighbor request will include LCI request
121 * @civic: if set, neighbor request will include civic location request
122 * @cb: Callback function to be called once the requested report arrives, or
123 * timed out after RRM_NEIGHBOR_REPORT_TIMEOUT seconds.
124 * In the former case, 'neighbor_rep' is a newly allocated wpabuf, and it's
125 * the requester's responsibility to free it.
126 * In the latter case NULL will be sent in 'neighbor_rep'.
127 * @cb_ctx: Context value to send the callback function
128 * Returns: 0 in case of success, negative error code otherwise
129 *
130 * In case there is a previous request which has not been answered yet, the
131 * new request fails. The caller may retry after RRM_NEIGHBOR_REPORT_TIMEOUT.
132 * Request must contain a callback function.
133 */
134int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s,
135 const struct wpa_ssid_value *ssid,
136 int lci, int civic,
137 void (*cb)(void *ctx,
138 struct wpabuf *neighbor_rep),
139 void *cb_ctx)
140{
141 struct wpabuf *buf;
142 const u8 *rrm_ie;
143
144 if (wpa_s->wpa_state != WPA_COMPLETED || wpa_s->current_ssid == NULL) {
145 wpa_printf(MSG_DEBUG, "RRM: No connection, no RRM.");
146 return -ENOTCONN;
147 }
148
149 if (!wpa_s->rrm.rrm_used) {
150 wpa_printf(MSG_DEBUG, "RRM: No RRM in current connection.");
151 return -EOPNOTSUPP;
152 }
153
154 rrm_ie = wpa_bss_get_ie(wpa_s->current_bss,
155 WLAN_EID_RRM_ENABLED_CAPABILITIES);
156 if (!rrm_ie || !(wpa_s->current_bss->caps & IEEE80211_CAP_RRM) ||
157 !(rrm_ie[2] & WLAN_RRM_CAPS_NEIGHBOR_REPORT)) {
158 wpa_printf(MSG_DEBUG,
159 "RRM: No network support for Neighbor Report.");
160 return -EOPNOTSUPP;
161 }
162
ec493469
AS		 163 /* Refuse if there's a live request */
164 if (wpa_s->rrm.notify_neighbor_rep) {
165 wpa_printf(MSG_DEBUG,
166 "RRM: Currently handling previous Neighbor Report.");
167 return -EBUSY;
168 }
169
170 /* 3 = action category + action code + dialog token */
171 buf = wpabuf_alloc(3 + (ssid ? 2 + ssid->ssid_len : 0) +
172 (lci ? 2 + MEASURE_REQUEST_LCI_LEN : 0) +
173 (civic ? 2 + MEASURE_REQUEST_CIVIC_LEN : 0));
174 if (buf == NULL) {
175 wpa_printf(MSG_DEBUG,
176 "RRM: Failed to allocate Neighbor Report Request");
177 return -ENOMEM;
178 }
179
180 wpa_printf(MSG_DEBUG, "RRM: Neighbor report request (for %s), token=%d",
181 (ssid ? wpa_ssid_txt(ssid->ssid, ssid->ssid_len) : ""),
182 wpa_s->rrm.next_neighbor_rep_token);
183
184 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
185 wpabuf_put_u8(buf, WLAN_RRM_NEIGHBOR_REPORT_REQUEST);
186 wpabuf_put_u8(buf, wpa_s->rrm.next_neighbor_rep_token);
187 if (ssid) {
188 wpabuf_put_u8(buf, WLAN_EID_SSID);
189 wpabuf_put_u8(buf, ssid->ssid_len);
190 wpabuf_put_data(buf, ssid->ssid, ssid->ssid_len);
191 }
192
193 if (lci) {
194 /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */
195 wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
196 wpabuf_put_u8(buf, MEASURE_REQUEST_LCI_LEN);
197
198 /*
199 * Measurement token; nonzero number that is unique among the
200 * Measurement Request elements in a particular frame.
201 */
202 wpabuf_put_u8(buf, 1); /* Measurement Token */
203
204 /*
205 * Parallel, Enable, Request, and Report bits are 0, Duration is
206 * reserved.
207 */
208 wpabuf_put_u8(buf, 0); /* Measurement Request Mode */
209 wpabuf_put_u8(buf, MEASURE_TYPE_LCI); /* Measurement Type */
210
211 /* IEEE P802.11-REVmc/D5.0 9.4.2.21.10 - LCI request */
212 /* Location Subject */
213 wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE);
214
215 /* Optional Subelements */
216 /*
217 * IEEE P802.11-REVmc/D5.0 Figure 9-170
218 * The Maximum Age subelement is required, otherwise the AP can
219 * send only data that was determined after receiving the
220 * request. Setting it here to unlimited age.
221 */
222 wpabuf_put_u8(buf, LCI_REQ_SUBELEM_MAX_AGE);
223 wpabuf_put_u8(buf, 2);
224 wpabuf_put_le16(buf, 0xffff);
225 }
226
227 if (civic) {
228 /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */
229 wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
230 wpabuf_put_u8(buf, MEASURE_REQUEST_CIVIC_LEN);
231
232 /*
233 * Measurement token; nonzero number that is unique among the
234 * Measurement Request elements in a particular frame.
235 */
236 wpabuf_put_u8(buf, 2); /* Measurement Token */
237
238 /*
239 * Parallel, Enable, Request, and Report bits are 0, Duration is
240 * reserved.
241 */
242 wpabuf_put_u8(buf, 0); /* Measurement Request Mode */
243 /* Measurement Type */
244 wpabuf_put_u8(buf, MEASURE_TYPE_LOCATION_CIVIC);
245
246 /* IEEE P802.11-REVmc/D5.0 9.4.2.21.14:
247 * Location Civic request */
248 /* Location Subject */
249 wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE);
250 wpabuf_put_u8(buf, 0); /* Civic Location Type: IETF RFC 4776 */
251 /* Location Service Interval Units: Seconds */
252 wpabuf_put_u8(buf, 0);
253 /* Location Service Interval: 0 - Only one report is requested
254 */
255 wpabuf_put_le16(buf, 0);
256 /* No optional subelements */
257 }
258
259 wpa_s->rrm.next_neighbor_rep_token++;
260
261 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
262 wpa_s->own_addr, wpa_s->bssid,
263 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
264 wpa_printf(MSG_DEBUG,
265 "RRM: Failed to send Neighbor Report Request");
266 wpabuf_free(buf);
267 return -ECANCELED;
268 }
269
270 wpa_s->rrm.neighbor_rep_cb_ctx = cb_ctx;
271 wpa_s->rrm.notify_neighbor_rep = cb;
272 eloop_register_timeout(RRM_NEIGHBOR_REPORT_TIMEOUT, 0,
273 wpas_rrm_neighbor_rep_timeout_handler,
274 &wpa_s->rrm, NULL);
275
276 wpabuf_free(buf);
277 return 0;
278}
279
280
5cda3508 281static int wpas_rrm_report_elem(struct wpabuf **buf, u8 token, u8 mode, u8 type,
e1b96e11
AS		 282 const u8 *data, size_t data_len)
283{
5cda3508 284 if (wpabuf_resize(buf, 5 + data_len))
e1b96e11
AS		 285 return -1;
286
5cda3508
JM		 287 wpabuf_put_u8(*buf, WLAN_EID_MEASURE_REPORT);
288 wpabuf_put_u8(*buf, 3 + data_len);
289 wpabuf_put_u8(*buf, token);
290 wpabuf_put_u8(*buf, mode);
291 wpabuf_put_u8(*buf, type);
e1b96e11
AS		 292
293 if (data_len)
5cda3508 294 wpabuf_put_data(*buf, data, data_len);
e1b96e11
AS		 295
296 return 0;
297}
298
299
3c716fdb
AS		 300static int
301wpas_rrm_build_lci_report(struct wpa_supplicant *wpa_s,
302 const struct rrm_measurement_request_element *req,
303 struct wpabuf **buf)
ec493469 304{
3c716fdb 305 u8 subject;
ec493469
AS		 306 u16 max_age = 0;
307 struct os_reltime t, diff;
308 unsigned long diff_l;
ec493469 309 const u8 *subelem;
3c716fdb
AS		 310 const u8 *request = req->variable;
311 size_t len = req->len - 3;
312
7187e209 313 if (len < 1)
3c716fdb 314 return -1;
ec493469 315
3c716fdb
AS		 316 if (!wpa_s->lci)
317 goto reject;
ec493469 318
ec493469 319 subject = *request++;
3c716fdb 320 len--;
ec493469 321
3c716fdb
AS		 322 wpa_printf(MSG_DEBUG, "Measurement request location subject=%u",
323 subject);
ec493469 324
3c716fdb 325 if (subject != LOCATION_SUBJECT_REMOTE) {
ec493469 326 wpa_printf(MSG_INFO,
3c716fdb
AS		 327 "Not building LCI report - bad location subject");
328 return 0;
ec493469
AS		 329 }
330
331 /* Subelements are formatted exactly like elements */
7187e209 332 wpa_hexdump(MSG_DEBUG, "LCI request subelements", request, len);
ec493469
AS		 333 subelem = get_ie(request, len, LCI_REQ_SUBELEM_MAX_AGE);
334 if (subelem && subelem[1] == 2)
335 max_age = WPA_GET_LE16(subelem + 2);
336
337 if (os_get_reltime(&t))
3c716fdb 338 goto reject;
ec493469
AS		 339
340 os_reltime_sub(&t, &wpa_s->lci_time, &diff);
341 /* LCI age is calculated in 10th of a second units. */
342 diff_l = diff.sec * 10 + diff.usec / 100000;
343
344 if (max_age != 0xffff && max_age < diff_l)
3c716fdb
AS		 345 goto reject;
346
5cda3508 347 if (wpas_rrm_report_elem(buf, req->token,
3c716fdb
AS		 348 MEASUREMENT_REPORT_MODE_ACCEPT, req->type,
349 wpabuf_head_u8(wpa_s->lci),
350 wpabuf_len(wpa_s->lci)) < 0) {
351 wpa_printf(MSG_DEBUG, "Failed to add LCI report element");
352 return -1;
353 }
354
355 return 0;
ec493469 356
3c716fdb 357reject:
b3c148e9
AS		 358 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) &&
359 wpas_rrm_report_elem(buf, req->token,
3c716fdb
AS		 360 MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE,
361 req->type, NULL, 0) < 0) {
362 wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
363 return -1;
364 }
ec493469 365
3c716fdb 366 return 0;
ec493469
AS		 367}
368
369
0c73e410
AS		 370static void wpas_rrm_send_msr_report_mpdu(struct wpa_supplicant *wpa_s,
371 const u8 *data, size_t len)
372{
373 struct wpabuf *report = wpabuf_alloc(len + 3);
374
375 if (!report)
376 return;
377
378 wpabuf_put_u8(report, WLAN_ACTION_RADIO_MEASUREMENT);
379 wpabuf_put_u8(report, WLAN_RRM_RADIO_MEASUREMENT_REPORT);
380 wpabuf_put_u8(report, wpa_s->rrm.token);
381
382 wpabuf_put_data(report, data, len);
383
384 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
385 wpa_s->own_addr, wpa_s->bssid,
386 wpabuf_head(report), wpabuf_len(report), 0)) {
387 wpa_printf(MSG_ERROR,
388 "RRM: Radio measurement report failed: Sending Action frame failed");
389 }
390
391 wpabuf_free(report);
392}
393
394
ecef0687
AS		 395static int wpas_rrm_beacon_rep_update_last_frame(u8 *pos, size_t len)
396{
397 struct rrm_measurement_report_element *msr_rep;
398 u8 *end = pos + len;
399 u8 *msr_rep_end;
56ac1f9d
AS		 400 struct rrm_measurement_beacon_report *rep = NULL;
401 u8 *subelem;
ecef0687 402
56ac1f9d 403 /* Find the last beacon report element */
ecef0687
AS		 404 while (end - pos >= (int) sizeof(*msr_rep)) {
405 msr_rep = (struct rrm_measurement_report_element *) pos;
406 msr_rep_end = pos + msr_rep->len + 2;
407
408 if (msr_rep->eid != WLAN_EID_MEASURE_REPORT ||
409 msr_rep_end > end) {
410 /* Should not happen. This indicates a bug. */
411 wpa_printf(MSG_ERROR,
412 "RRM: non-measurement report element in measurement report frame");
413 return -1;
414 }
415
56ac1f9d 416 if (msr_rep->type == MEASURE_TYPE_BEACON)
ecef0687
AS		 417 rep = (struct rrm_measurement_beacon_report *)
418 msr_rep->variable;
ecef0687
AS		 419
420 pos += pos[1] + 2;
421 }
422
56ac1f9d
AS		 423 if (!rep)
424 return 0;
425
426 subelem = rep->variable;
427 while (subelem + 2 < msr_rep_end &&
428 subelem[0] != WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION)
429 subelem += 2 + subelem[1];
430
431 if (subelem + 2 < msr_rep_end &&
432 subelem[0] == WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION &&
433 subelem[1] == 1 &&
434 subelem + BEACON_REPORT_LAST_INDICATION_SUBELEM_LEN <= end)
435 subelem[2] = 1;
436
ecef0687
AS		 437 return 0;
438}
439
440
0c73e410
AS		 441static void wpas_rrm_send_msr_report(struct wpa_supplicant *wpa_s,
442 struct wpabuf *buf)
443{
444 int len = wpabuf_len(buf);
ecef0687 445 u8 *pos = wpabuf_mhead_u8(buf), *next = pos;
0c73e410
AS		 446
447#define MPDU_REPORT_LEN (int) (IEEE80211_MAX_MMPDU_SIZE - IEEE80211_HDRLEN - 3)
448
449 while (len) {
450 int send_len = (len > MPDU_REPORT_LEN) ? next - pos : len;
451
ecef0687
AS		 452 if (send_len == len)
453 wpas_rrm_beacon_rep_update_last_frame(pos, len);
454
0c73e410
AS		 455 if (send_len == len ||
456 (send_len + next[1] + 2) > MPDU_REPORT_LEN) {
457 wpas_rrm_send_msr_report_mpdu(wpa_s, pos, send_len);
458 len -= send_len;
459 pos = next;
460 }
461
b696f791
JM		 462 if (len)
463 next += next[1] + 2;
0c73e410
AS		 464 }
465#undef MPDU_REPORT_LEN
466}
467
468
76196ddb
AS		 469static int wpas_add_channel(u8 op_class, u8 chan, u8 num_primary_channels,
470 int *freqs)
471{
472 size_t i;
473
474 for (i = 0; i < num_primary_channels; i++) {
475 u8 primary_chan = chan - (2 * num_primary_channels - 2) + i * 4;
476
477 freqs[i] = ieee80211_chan_to_freq(NULL, op_class, primary_chan);
40e9a3f3
JM		 478 /* ieee80211_chan_to_freq() is not really meant for this
479 * conversion of 20 MHz primary channel numbers for wider VHT
480 * channels, so handle those as special cases here for now. */
481 if (freqs[i] < 0 &&
482 (op_class == 128 || op_class == 129 || op_class == 130))
483 freqs[i] = 5000 + 5 * primary_chan;
76196ddb
AS		 484 if (freqs[i] < 0) {
485 wpa_printf(MSG_DEBUG,
486 "Beacon Report: Invalid channel %u",
487 chan);
488 return -1;
489 }
490 }
491
492 return 0;
493}
494
495
496static int * wpas_add_channels(const struct oper_class_map *op,
497 struct hostapd_hw_modes *mode, int active,
498 const u8 *channels, const u8 size)
499{
500 int *freqs, *next_freq;
501 u8 num_primary_channels, i;
502 u8 num_chans;
503
504 num_chans = channels ? size :
505 (op->max_chan - op->min_chan) / op->inc + 1;
506
507 if (op->bw == BW80 || op->bw == BW80P80)
508 num_primary_channels = 4;
509 else if (op->bw == BW160)
510 num_primary_channels = 8;
511 else
512 num_primary_channels = 1;
513
514 /* one extra place for the zero-terminator */
515 freqs = os_calloc(num_chans * num_primary_channels + 1, sizeof(*freqs));
516 if (!freqs) {
517 wpa_printf(MSG_ERROR,
518 "Beacon Report: Failed to allocate freqs array");
519 return NULL;
520 }
521
522 next_freq = freqs;
523 for (i = 0; i < num_chans; i++) {
524 u8 chan = channels ? channels[i] : op->min_chan + i * op->inc;
525 enum chan_allowed res = verify_channel(mode, chan, op->bw);
526
527 if (res == NOT_ALLOWED || (res == NO_IR && active))
528 continue;
529
530 if (wpas_add_channel(op->op_class, chan, num_primary_channels,
531 next_freq) < 0) {
532 os_free(freqs);
533 return NULL;
534 }
535
536 next_freq += num_primary_channels;
537 }
538
539 if (!freqs[0]) {
540 os_free(freqs);
541 return NULL;
542 }
543
544 return freqs;
545}
546
547
548static int * wpas_op_class_freqs(const struct oper_class_map *op,
549 struct hostapd_hw_modes *mode, int active)
550{
551 u8 channels_80mhz[] = { 42, 58, 106, 122, 138, 155 };
552 u8 channels_160mhz[] = { 50, 114 };
553
554 /*
555 * When adding all channels in the operating class, 80 + 80 MHz
556 * operating classes are like 80 MHz channels because we add all valid
557 * channels anyway.
558 */
559 if (op->bw == BW80 || op->bw == BW80P80)
560 return wpas_add_channels(op, mode, active, channels_80mhz,
561 ARRAY_SIZE(channels_80mhz));
562
563 if (op->bw == BW160)
564 return wpas_add_channels(op, mode, active, channels_160mhz,
565 ARRAY_SIZE(channels_160mhz));
566
567 return wpas_add_channels(op, mode, active, NULL, 0);
568}
569
570
571static int * wpas_channel_report_freqs(struct wpa_supplicant *wpa_s, int active,
572 const char *country, const u8 *subelems,
573 size_t len)
574{
575 int *freqs = NULL, *new_freqs;
576 const u8 *end = subelems + len;
577
578 while (end - subelems > 2) {
579 const struct oper_class_map *op;
580 const u8 *ap_chan_elem, *pos;
581 u8 left;
582 struct hostapd_hw_modes *mode;
583
584 ap_chan_elem = get_ie(subelems, end - subelems,
585 WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL);
586 if (!ap_chan_elem)
587 break;
588 pos = ap_chan_elem + 2;
589 left = ap_chan_elem[1];
590 if (left < 1)
591 break;
592 subelems = ap_chan_elem + 2 + left;
593
594 op = get_oper_class(country, *pos);
595 if (!op) {
596 wpa_printf(MSG_DEBUG,
597 "Beacon request: unknown operating class in AP Channel Report subelement %u",
598 *pos);
599 goto out;
600 }
601 pos++;
602 left--;
603
604 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode);
605 if (!mode)
606 continue;
607
608 /*
609 * For 80 + 80 MHz operating classes, this AP Channel Report
610 * element should be followed by another element specifying
611 * the second 80 MHz channel. For now just add this 80 MHz
612 * channel, the second 80 MHz channel will be added when the
613 * next element is parsed.
614 * TODO: Verify that this AP Channel Report element is followed
615 * by a corresponding AP Channel Report element as specified in
616 * IEEE Std 802.11-2016, 11.11.9.1.
617 */
618 new_freqs = wpas_add_channels(op, mode, active, pos, left);
619 if (new_freqs)
620 int_array_concat(&freqs, new_freqs);
621
622 os_free(new_freqs);
623 }
624
625 return freqs;
626out:
627 os_free(freqs);
628 return NULL;
629}
630
631
632static int * wpas_beacon_request_freqs(struct wpa_supplicant *wpa_s,
633 u8 op_class, u8 chan, int active,
634 const u8 *subelems, size_t len)
635{
636 int *freqs = NULL, *ext_freqs = NULL;
637 struct hostapd_hw_modes *mode;
638 const char *country = NULL;
639 const struct oper_class_map *op;
640 const u8 *elem;
641
642 if (!wpa_s->current_bss)
643 return NULL;
644 elem = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
645 if (elem && elem[1] >= 2)
646 country = (const char *) (elem + 2);
647
648 op = get_oper_class(country, op_class);
649 if (!op) {
650 wpa_printf(MSG_DEBUG,
651 "Beacon request: invalid operating class %d",
652 op_class);
653 return NULL;
654 }
655
656 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode);
657 if (!mode)
658 return NULL;
659
660 switch (chan) {
661 case 0:
662 freqs = wpas_op_class_freqs(op, mode, active);
663 if (!freqs)
664 return NULL;
665 break;
666 case 255:
667 /* freqs will be added from AP channel subelements */
668 break;
669 default:
670 freqs = wpas_add_channels(op, mode, active, &chan, 1);
671 if (!freqs)
672 return NULL;
673 break;
674 }
675
676 ext_freqs = wpas_channel_report_freqs(wpa_s, active, country, subelems,
677 len);
678 if (ext_freqs) {
679 int_array_concat(&freqs, ext_freqs);
680 os_free(ext_freqs);
922dcf1b 681 int_array_sort_unique(freqs);
76196ddb
AS		 682 }
683
684 return freqs;
685}
686
687
30eddf35
JB		 688static int wpas_get_op_chan_phy(int freq, const u8 *ies, size_t ies_len,
689 u8 *op_class, u8 *chan, u8 *phy_type)
76196ddb
AS		 690{
691 const u8 *ie;
692 int sec_chan = 0, vht = 0;
693 struct ieee80211_ht_operation *ht_oper = NULL;
694 struct ieee80211_vht_operation *vht_oper = NULL;
695 u8 seg0, seg1;
696
697 ie = get_ie(ies, ies_len, WLAN_EID_HT_OPERATION);
698 if (ie && ie[1] >= sizeof(struct ieee80211_ht_operation)) {
699 u8 sec_chan_offset;
700
701 ht_oper = (struct ieee80211_ht_operation *) (ie + 2);
702 sec_chan_offset = ht_oper->ht_param &
703 HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
704 if (sec_chan_offset == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
705 sec_chan = 1;
706 else if (sec_chan_offset ==
707 HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
708 sec_chan = -1;
709 }
710
711 ie = get_ie(ies, ies_len, WLAN_EID_VHT_OPERATION);
712 if (ie && ie[1] >= sizeof(struct ieee80211_vht_operation)) {
713 vht_oper = (struct ieee80211_vht_operation *) (ie + 2);
714
715 switch (vht_oper->vht_op_info_chwidth) {
716 case 1:
717 seg0 = vht_oper->vht_op_info_chan_center_freq_seg0_idx;
718 seg1 = vht_oper->vht_op_info_chan_center_freq_seg1_idx;
719 if (seg1 && abs(seg1 - seg0) == 8)
464dcfd0 720 vht = CHANWIDTH_160MHZ;
76196ddb 721 else if (seg1)
464dcfd0 722 vht = CHANWIDTH_80P80MHZ;
76196ddb 723 else
464dcfd0 724 vht = CHANWIDTH_80MHZ;
76196ddb
AS		 725 break;
726 case 2:
464dcfd0 727 vht = CHANWIDTH_160MHZ;
76196ddb
AS		 728 break;
729 case 3:
464dcfd0 730 vht = CHANWIDTH_80P80MHZ;
76196ddb
AS		 731 break;
732 default:
464dcfd0 733 vht = CHANWIDTH_USE_HT;
76196ddb
AS		 734 break;
735 }
736 }
737
738 if (ieee80211_freq_to_channel_ext(freq, sec_chan, vht, op_class,
739 chan) == NUM_HOSTAPD_MODES) {
740 wpa_printf(MSG_DEBUG,
741 "Cannot determine operating class and channel");
742 return -1;
743 }
744
745 *phy_type = ieee80211_get_phy_type(freq, ht_oper != NULL,
746 vht_oper != NULL);
747 if (*phy_type == PHY_TYPE_UNSPECIFIED) {
748 wpa_printf(MSG_DEBUG, "Cannot determine phy type");
749 return -1;
750 }
751
752 return 0;
753}
754
755
756static int wpas_beacon_rep_add_frame_body(struct bitfield *eids,
757 enum beacon_report_detail detail,
758 struct wpa_bss *bss, u8 *buf,
3ec11878
AS		 759 size_t buf_len, u8 **ies_buf,
760 size_t *ie_len, int add_fixed)
76196ddb 761{
3ec11878
AS		 762 u8 *ies = *ies_buf;
763 size_t ies_len = *ie_len;
76196ddb
AS		 764 u8 *pos = buf;
765 int rem_len;
766
767 rem_len = 255 - sizeof(struct rrm_measurement_beacon_report) -
3ec11878
AS		 768 sizeof(struct rrm_measurement_report_element) - 2 -
769 REPORTED_FRAME_BODY_SUBELEM_LEN;
76196ddb
AS		 770
771 if (detail > BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) {
772 wpa_printf(MSG_DEBUG,
773 "Beacon Request: Invalid reporting detail: %d",
774 detail);
775 return -1;
776 }
777
778 if (detail == BEACON_REPORT_DETAIL_NONE)
779 return 0;
780
781 /*
782 * Minimal frame body subelement size: EID(1) + length(1) + TSF(8) +
783 * beacon interval(2) + capabilities(2) = 14 bytes
784 */
3ec11878
AS		 785 if (add_fixed && buf_len < 14)
786 return -1;
76196ddb
AS		 787
788 *pos++ = WLAN_BEACON_REPORT_SUBELEM_FRAME_BODY;
789 /* The length will be filled later */
790 pos++;
3ec11878
AS		 791
792 if (add_fixed) {
793 WPA_PUT_LE64(pos, bss->tsf);
794 pos += sizeof(bss->tsf);
795 WPA_PUT_LE16(pos, bss->beacon_int);
796 pos += 2;
797 WPA_PUT_LE16(pos, bss->caps);
798 pos += 2;
799 }
76196ddb
AS		 800
801 rem_len -= pos - buf;
802
803 /*
804 * According to IEEE Std 802.11-2016, 9.4.2.22.7, if the reported frame
805 * body subelement causes the element to exceed the maximum element
806 * size, the subelement is truncated so that the last IE is a complete
807 * IE. So even when required to report all IEs, add elements one after
808 * the other and stop once there is no more room in the measurement
809 * element.
810 */
811 while (ies_len > 2 && 2U + ies[1] <= ies_len && rem_len > 0) {
812 if (detail == BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS ||
813 (eids && bitfield_is_set(eids, ies[0]))) {
3ec11878 814 u8 elen = ies[1];
76196ddb
AS		 815
816 if (2 + elen > buf + buf_len - pos ||
817 2 + elen > rem_len)
818 break;
819
820 *pos++ = ies[0];
821 *pos++ = elen;
822 os_memcpy(pos, ies + 2, elen);
823 pos += elen;
824 rem_len -= 2 + elen;
825 }
826
827 ies_len -= 2 + ies[1];
828 ies += 2 + ies[1];
829 }
830
3ec11878
AS		 831 *ie_len = ies_len;
832 *ies_buf = ies;
833
76196ddb
AS		 834 /* Now the length is known */
835 buf[1] = pos - buf - 2;
836 return pos - buf;
837}
838
839
3ec11878
AS		 840static int wpas_add_beacon_rep_elem(struct beacon_rep_data *data,
841 struct wpa_bss *bss,
842 struct wpabuf **wpa_buf,
843 struct rrm_measurement_beacon_report *rep,
844 u8 **ie, size_t *ie_len, u8 idx)
845{
846 int ret;
847 u8 *buf, *pos;
ecef0687
AS		 848 u32 subelems_len = REPORTED_FRAME_BODY_SUBELEM_LEN +
849 (data->last_indication ?
850 BEACON_REPORT_LAST_INDICATION_SUBELEM_LEN : 0);
3ec11878
AS		 851
852 /* Maximum element length: Beacon Report element + Reported Frame Body
853 * subelement + all IEs of the reported Beacon frame + Reported Frame
854 * Body Fragment ID subelement */
ecef0687 855 buf = os_malloc(sizeof(*rep) + 14 + *ie_len + subelems_len);
3ec11878
AS		 856 if (!buf)
857 return -1;
858
859 os_memcpy(buf, rep, sizeof(*rep));
860
861 ret = wpas_beacon_rep_add_frame_body(data->eids, data->report_detail,
862 bss, buf + sizeof(*rep),
863 14 + *ie_len, ie, ie_len,
864 idx == 0);
865 if (ret < 0)
866 goto out;
867
868 pos = buf + ret + sizeof(*rep);
869 pos[0] = WLAN_BEACON_REPORT_SUBELEM_FRAME_BODY_FRAGMENT_ID;
870 pos[1] = 2;
871
872 /*
873 * Only one Beacon Report Measurement is supported at a time, so
874 * the Beacon Report ID can always be set to 1.
875 */
876 pos[2] = 1;
877
878 /* Fragment ID Number (bits 0..6) and More Frame Body Fragments (bit 7)
879 */
880 pos[3] = idx;
881 if (data->report_detail != BEACON_REPORT_DETAIL_NONE && *ie_len)
882 pos[3] |= REPORTED_FRAME_BODY_MORE_FRAGMENTS;
883 else
884 pos[3] &= ~REPORTED_FRAME_BODY_MORE_FRAGMENTS;
885
ecef0687
AS		 886 pos += REPORTED_FRAME_BODY_SUBELEM_LEN;
887
888 if (data->last_indication) {
889 pos[0] = WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION;
890 pos[1] = 1;
891
892 /* This field will be updated later if this is the last frame */
893 pos[2] = 0;
894 }
895
3ec11878
AS		 896 ret = wpas_rrm_report_elem(wpa_buf, data->token,
897 MEASUREMENT_REPORT_MODE_ACCEPT,
898 MEASURE_TYPE_BEACON, buf,
ecef0687 899 ret + sizeof(*rep) + subelems_len);
3ec11878
AS		 900out:
901 os_free(buf);
902 return ret;
903}
904
905
76196ddb
AS		 906static int wpas_add_beacon_rep(struct wpa_supplicant *wpa_s,
907 struct wpabuf **wpa_buf, struct wpa_bss *bss,
908 u64 start, u64 parent_tsf)
909{
910 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
3ec11878
AS		 911 u8 *ies = (u8 *) (bss + 1);
912 u8 *pos = ies;
913 size_t ies_len = bss->ie_len ? bss->ie_len : bss->beacon_ie_len;
914 struct rrm_measurement_beacon_report rep;
915 u8 idx = 0;
76196ddb
AS		 916
917 if (os_memcmp(data->bssid, broadcast_ether_addr, ETH_ALEN) != 0 &&
918 os_memcmp(data->bssid, bss->bssid, ETH_ALEN) != 0)
919 return 0;
920
921 if (data->ssid_len &&
922 (data->ssid_len != bss->ssid_len ||
923 os_memcmp(data->ssid, bss->ssid, bss->ssid_len) != 0))
924 return 0;
925
3ec11878
AS		 926 if (wpas_get_op_chan_phy(bss->freq, ies, ies_len, &rep.op_class,
927 &rep.channel, &rep.report_info) < 0)
928 return 0;
891aa65b 929
3ec11878
AS		 930 rep.start_time = host_to_le64(start);
931 rep.duration = host_to_le16(data->scan_params.duration);
932 rep.rcpi = rssi_to_rcpi(bss->level);
933 rep.rsni = 255; /* 255 indicates that RSNI is not available */
934 os_memcpy(rep.bssid, bss->bssid, ETH_ALEN);
935 rep.antenna_id = 0; /* unknown */
936 rep.parent_tsf = host_to_le32(parent_tsf);
76196ddb 937
3ec11878
AS		 938 do {
939 int ret;
76196ddb 940
3ec11878
AS		 941 ret = wpas_add_beacon_rep_elem(data, bss, wpa_buf, &rep,
942 &pos, &ies_len, idx++);
943 if (ret)
944 return ret;
945 } while (data->report_detail != BEACON_REPORT_DETAIL_NONE &&
946 ies_len >= 2);
76196ddb 947
3ec11878 948 return 0;
76196ddb
AS		 949}
950
951
952static int wpas_beacon_rep_no_results(struct wpa_supplicant *wpa_s,
953 struct wpabuf **buf)
954{
5cda3508 955 return wpas_rrm_report_elem(buf, wpa_s->beacon_rep_data.token,
76196ddb
AS		 956 MEASUREMENT_REPORT_MODE_ACCEPT,
957 MEASURE_TYPE_BEACON, NULL, 0);
958}
959
960
961static void wpas_beacon_rep_table(struct wpa_supplicant *wpa_s,
962 struct wpabuf **buf)
963{
964 size_t i;
965
966 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
967 if (wpas_add_beacon_rep(wpa_s, buf, wpa_s->last_scan_res[i],
968 0, 0) < 0)
969 break;
970 }
971
972 if (!(*buf))
973 wpas_beacon_rep_no_results(wpa_s, buf);
974
975 wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", *buf);
976}
977
978
3756acfd 979void wpas_rrm_refuse_request(struct wpa_supplicant *wpa_s)
76196ddb 980{
b3c148e9
AS		 981 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr)) {
982 struct wpabuf *buf = NULL;
983
984 if (wpas_rrm_report_elem(&buf, wpa_s->beacon_rep_data.token,
985 MEASUREMENT_REPORT_MODE_REJECT_REFUSED,
986 MEASURE_TYPE_BEACON, NULL, 0)) {
987 wpa_printf(MSG_ERROR, "RRM: Memory allocation failed");
988 wpabuf_free(buf);
989 return;
990 }
76196ddb 991
b3c148e9 992 wpas_rrm_send_msr_report(wpa_s, buf);
76196ddb 993 wpabuf_free(buf);
76196ddb
AS		 994 }
995
76196ddb 996 wpas_clear_beacon_rep_data(wpa_s);
76196ddb
AS		 997}
998
999
1000static void wpas_rrm_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1001{
1002 struct wpa_supplicant *wpa_s = eloop_ctx;
1003 struct wpa_driver_scan_params *params =
1004 &wpa_s->beacon_rep_data.scan_params;
d7342014 1005 u16 prev_duration = params->duration;
76196ddb
AS		 1006
1007 if (!wpa_s->current_bss)
1008 return;
1009
d7342014
JM		 1010 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL) &&
1011 params->duration) {
1012 wpa_printf(MSG_DEBUG,
1013 "RRM: Cannot set scan duration due to missing driver support");
1014 params->duration = 0;
1015 }
1016 os_get_reltime(&wpa_s->beacon_rep_scan);
76196ddb
AS		 1017 if (wpa_s->scanning || wpas_p2p_in_progress(wpa_s) ||
1018 wpa_supplicant_trigger_scan(wpa_s, params))
1019 wpas_rrm_refuse_request(wpa_s);
d7342014 1020 params->duration = prev_duration;
76196ddb
AS		 1021}
1022
1023
1024static int wpas_rm_handle_beacon_req_subelem(struct wpa_supplicant *wpa_s,
1025 struct beacon_rep_data *data,
1026 u8 sid, u8 slen, const u8 *subelem)
1027{
1028 u8 report_info, i;
1029
1030 switch (sid) {
1031 case WLAN_BEACON_REQUEST_SUBELEM_SSID:
1032 if (!slen) {
1033 wpa_printf(MSG_DEBUG,
1034 "SSID subelement with zero length - wildcard SSID");
1035 break;
1036 }
1037
1038 if (slen > SSID_MAX_LEN) {
1039 wpa_printf(MSG_DEBUG,
1040 "Invalid SSID subelement length: %u", slen);
1041 return -1;
1042 }
1043
1044 data->ssid_len = slen;
1045 os_memcpy(data->ssid, subelem, data->ssid_len);
1046 break;
1047 case WLAN_BEACON_REQUEST_SUBELEM_INFO:
1048 if (slen != 2) {
1049 wpa_printf(MSG_DEBUG,
1050 "Invalid reporting information subelement length: %u",
1051 slen);
1052 return -1;
1053 }
1054
1055 report_info = subelem[0];
1056 if (report_info != 0) {
1057 wpa_printf(MSG_DEBUG,
1058 "reporting information=%u is not supported",
1059 report_info);
1060 return 0;
1061 }
1062 break;
1063 case WLAN_BEACON_REQUEST_SUBELEM_DETAIL:
1064 if (slen != 1) {
1065 wpa_printf(MSG_DEBUG,
1066 "Invalid reporting detail subelement length: %u",
1067 slen);
1068 return -1;
1069 }
1070
1071 data->report_detail = subelem[0];
1072 if (data->report_detail >
1073 BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) {
1074 wpa_printf(MSG_DEBUG, "Invalid reporting detail: %u",
1075 subelem[0]);
705e2909 1076 return -1;
76196ddb
AS		 1077 }
1078
1079 break;
1080 case WLAN_BEACON_REQUEST_SUBELEM_REQUEST:
1081 if (data->report_detail !=
1082 BEACON_REPORT_DETAIL_REQUESTED_ONLY) {
1083 wpa_printf(MSG_DEBUG,
1084 "Beacon request: request subelement is present but report detail is %u",
1085 data->report_detail);
1086 return -1;
1087 }
1088
1089 if (!slen) {
1090 wpa_printf(MSG_DEBUG,
1091 "Invalid request subelement length: %u",
1092 slen);
1093 return -1;
1094 }
1095
1096 if (data->eids) {
1097 wpa_printf(MSG_DEBUG,
1098 "Beacon Request: Request subelement appears more than once");
1099 return -1;
1100 }
1101
1102 data->eids = bitfield_alloc(255);
1103 if (!data->eids) {
1104 wpa_printf(MSG_DEBUG, "Failed to allocate EIDs bitmap");
1105 return -1;
1106 }
1107
1108 for (i = 0; i < slen; i++)
1109 bitfield_set(data->eids, subelem[i]);
1110 break;
1111 case WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL:
1112 /* Skip - it will be processed when freqs are added */
1113 break;
ecef0687
AS		 1114 case WLAN_BEACON_REQUEST_SUBELEM_LAST_INDICATION:
1115 if (slen != 1) {
1116 wpa_printf(MSG_DEBUG,
1117 "Beacon request: Invalid last indication request subelement length: %u",
1118 slen);
1119 return -1;
1120 }
1121
1122 data->last_indication = subelem[0];
1123 break;
76196ddb
AS		 1124 default:
1125 wpa_printf(MSG_DEBUG,
1126 "Beacon request: Unknown subelement id %u", sid);
1127 break;
1128 }
1129
1130 return 1;
1131}
1132
1133
1134/**
1135 * Returns 0 if the next element can be processed, 1 if some operation was
1136 * triggered, and -1 if processing failed (i.e., the element is in invalid
1137 * format or an internal error occurred).
1138 */
1139static int
1140wpas_rm_handle_beacon_req(struct wpa_supplicant *wpa_s,
1141 u8 elem_token, int duration_mandatory,
1142 const struct rrm_measurement_beacon_request *req,
1143 size_t len, struct wpabuf **buf)
1144{
1145 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
1146 struct wpa_driver_scan_params *params = &data->scan_params;
1147 const u8 *subelems;
1148 size_t elems_len;
1149 u16 rand_interval;
1150 u32 interval_usec;
1151 u32 _rand;
1152 int ret = 0, res;
705e2909 1153 u8 reject_mode;
76196ddb 1154
76196ddb
AS		 1155 if (len < sizeof(*req))
1156 return -1;
de6ec8b5 1157
d7342014
JM		 1158 if (req->mode != BEACON_REPORT_MODE_PASSIVE &&
1159 req->mode != BEACON_REPORT_MODE_ACTIVE &&
1160 req->mode != BEACON_REPORT_MODE_TABLE)
de6ec8b5
JM		 1161 return 0;
1162
76196ddb
AS		 1163 subelems = req->variable;
1164 elems_len = len - sizeof(*req);
1165 rand_interval = le_to_host16(req->rand_interval);
1166
4d70b2a4 1167 os_free(params->freqs);
76196ddb
AS		 1168 os_memset(params, 0, sizeof(*params));
1169
1170 data->token = elem_token;
1171
1172 /* default reporting detail is all fixed length fields and all
1173 * elements */
1174 data->report_detail = BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS;
1175 os_memcpy(data->bssid, req->bssid, ETH_ALEN);
1176
1177 while (elems_len >= 2) {
1178 if (subelems[1] > elems_len - 2) {
1179 wpa_printf(MSG_DEBUG,
1180 "Beacon Request: Truncated subelement");
1181 ret = -1;
1182 goto out;
1183 }
1184
1185 res = wpas_rm_handle_beacon_req_subelem(
1186 wpa_s, data, subelems[0], subelems[1], &subelems[2]);
705e2909 1187 if (res < 0) {
76196ddb
AS		 1188 ret = res;
1189 goto out;
705e2909
AS		 1190 } else if (!res) {
1191 reject_mode = MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE;
1192 goto out_reject;
76196ddb
AS		 1193 }
1194
1195 elems_len -= 2 + subelems[1];
1196 subelems += 2 + subelems[1];
1197 }
1198
1199 if (req->mode == BEACON_REPORT_MODE_TABLE) {
1200 wpas_beacon_rep_table(wpa_s, buf);
1201 goto out;
1202 }
1203
1204 params->freqs = wpas_beacon_request_freqs(
1205 wpa_s, req->oper_class, req->channel,
1206 req->mode == BEACON_REPORT_MODE_ACTIVE,
1207 req->variable, len - sizeof(*req));
1208 if (!params->freqs) {
1209 wpa_printf(MSG_DEBUG, "Beacon request: No valid channels");
705e2909
AS		 1210 reject_mode = MEASUREMENT_REPORT_MODE_REJECT_REFUSED;
1211 goto out_reject;
76196ddb
AS		 1212 }
1213
1214 params->duration = le_to_host16(req->duration);
1215 params->duration_mandatory = duration_mandatory;
1216 if (!params->duration) {
1217 wpa_printf(MSG_DEBUG, "Beacon request: Duration is 0");
1218 ret = -1;
1219 goto out;
1220 }
1221
1222 params->only_new_results = 1;
1223
1224 if (req->mode == BEACON_REPORT_MODE_ACTIVE) {
1225 params->ssids[params->num_ssids].ssid = data->ssid;
1226 params->ssids[params->num_ssids++].ssid_len = data->ssid_len;
1227 }
1228
1229 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
1230 _rand = os_random();
1231 interval_usec = (_rand % (rand_interval + 1)) * 1024;
1232 eloop_register_timeout(0, interval_usec, wpas_rrm_scan_timeout, wpa_s,
1233 NULL);
1234 return 1;
705e2909
AS		 1235out_reject:
1236 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) &&
1237 wpas_rrm_report_elem(buf, elem_token, reject_mode,
1238 MEASURE_TYPE_BEACON, NULL, 0) < 0) {
1239 wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
1240 ret = -1;
1241 }
76196ddb
AS		 1242out:
1243 wpas_clear_beacon_rep_data(wpa_s);
1244 return ret;
1245}
1246
1247
9664ab8b
AS		 1248static int
1249wpas_rrm_handle_msr_req_element(
1250 struct wpa_supplicant *wpa_s,
1251 const struct rrm_measurement_request_element *req,
1252 struct wpabuf **buf)
ec493469 1253{
76196ddb
AS		 1254 int duration_mandatory;
1255
9664ab8b
AS		 1256 wpa_printf(MSG_DEBUG, "Measurement request type %d token %d",
1257 req->type, req->token);
1258
e1b96e11
AS		 1259 if (req->mode & MEASUREMENT_REQUEST_MODE_ENABLE) {
1260 /* Enable bit is not supported for now */
1261 wpa_printf(MSG_DEBUG, "RRM: Enable bit not supported, ignore");
1262 return 0;
1263 }
1264
1265 if ((req->mode & MEASUREMENT_REQUEST_MODE_PARALLEL) &&
1266 req->type > MEASURE_TYPE_RPI_HIST) {
1267 /* Parallel measurements are not supported for now */
1268 wpa_printf(MSG_DEBUG,
1269 "RRM: Parallel measurements are not supported, reject");
1270 goto reject;
1271 }
1272
76196ddb
AS		 1273 duration_mandatory =
1274 !!(req->mode & MEASUREMENT_REQUEST_MODE_DURATION_MANDATORY);
1275
9664ab8b
AS		 1276 switch (req->type) {
1277 case MEASURE_TYPE_LCI:
3c716fdb 1278 return wpas_rrm_build_lci_report(wpa_s, req, buf);
76196ddb 1279 case MEASURE_TYPE_BEACON:
d7342014
JM		 1280 if (duration_mandatory &&
1281 !(wpa_s->drv_rrm_flags &
1282 WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL)) {
1283 wpa_printf(MSG_DEBUG,
1284 "RRM: Driver does not support dwell time configuration - reject beacon report with mandatory duration");
1285 goto reject;
1286 }
76196ddb
AS		 1287 return wpas_rm_handle_beacon_req(wpa_s, req->token,
1288 duration_mandatory,
1289 (const void *) req->variable,
1290 req->len - 3, buf);
9664ab8b 1291 default:
ec493469 1292 wpa_printf(MSG_INFO,
9664ab8b
AS		 1293 "RRM: Unsupported radio measurement type %u",
1294 req->type);
1295 break;
ec493469
AS		 1296 }
1297
e1b96e11 1298reject:
b3c148e9
AS		 1299 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) &&
1300 wpas_rrm_report_elem(buf, req->token,
e1b96e11
AS		 1301 MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE,
1302 req->type, NULL, 0) < 0) {
1303 wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
1304 return -1;
1305 }
1306
9664ab8b
AS		 1307 return 0;
1308}
ec493469 1309
ec493469 1310
9664ab8b
AS		 1311static struct wpabuf *
1312wpas_rrm_process_msr_req_elems(struct wpa_supplicant *wpa_s, const u8 *pos,
1313 size_t len)
1314{
1315 struct wpabuf *buf = NULL;
ec493469 1316
9664ab8b 1317 while (len) {
332bf5d3 1318 const struct rrm_measurement_request_element *req;
9664ab8b 1319 int res;
ec493469 1320
9664ab8b 1321 if (len < 2) {
332bf5d3
AS		 1322 wpa_printf(MSG_DEBUG, "RRM: Truncated element");
1323 goto out;
1324 }
1325
9664ab8b 1326 req = (const struct rrm_measurement_request_element *) pos;
332bf5d3
AS		 1327 if (req->eid != WLAN_EID_MEASURE_REQUEST) {
1328 wpa_printf(MSG_DEBUG,
1329 "RRM: Expected Measurement Request element, but EID is %u",
1330 req->eid);
1331 goto out;
1332 }
1333
1334 if (req->len < 3) {
1335 wpa_printf(MSG_DEBUG, "RRM: Element length too short");
1336 goto out;
1337 }
332bf5d3 1338
9664ab8b 1339 if (req->len > len - 2) {
332bf5d3
AS		 1340 wpa_printf(MSG_DEBUG, "RRM: Element length too long");
1341 goto out;
1342 }
ec493469 1343
9664ab8b
AS		 1344 res = wpas_rrm_handle_msr_req_element(wpa_s, req, &buf);
1345 if (res < 0)
1346 goto out;
ec493469 1347
9664ab8b
AS		 1348 pos += req->len + 2;
1349 len -= req->len + 2;
ec493469
AS		 1350 }
1351
9664ab8b
AS		 1352 return buf;
1353
1354out:
1355 wpabuf_free(buf);
1356 return NULL;
1357}
1358
1359
1360void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s,
b3c148e9 1361 const u8 *src, const u8 *dst,
9664ab8b
AS		 1362 const u8 *frame, size_t len)
1363{
0c73e410 1364 struct wpabuf *report;
9664ab8b
AS		 1365
1366 if (wpa_s->wpa_state != WPA_COMPLETED) {
1367 wpa_printf(MSG_INFO,
1368 "RRM: Ignoring radio measurement request: Not associated");
1369 return;
1370 }
1371
1372 if (!wpa_s->rrm.rrm_used) {
1373 wpa_printf(MSG_INFO,
1374 "RRM: Ignoring radio measurement request: Not RRM network");
1375 return;
1376 }
1377
1378 if (len < 3) {
1379 wpa_printf(MSG_INFO,
1380 "RRM: Ignoring too short radio measurement request");
1381 return;
1382 }
1383
0c73e410 1384 wpa_s->rrm.token = *frame;
b3c148e9 1385 os_memcpy(wpa_s->rrm.dst_addr, dst, ETH_ALEN);
9664ab8b
AS		 1386
1387 /* Number of repetitions is not supported */
1388
1389 report = wpas_rrm_process_msr_req_elems(wpa_s, frame + 3, len - 3);
ec493469
AS		 1390 if (!report)
1391 return;
1392
0c73e410 1393 wpas_rrm_send_msr_report(wpa_s, report);
332bf5d3 1394 wpabuf_free(report);
ec493469
AS		 1395}
1396
1397
1398void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s,
1399 const u8 *src,
1400 const u8 *frame, size_t len,
1401 int rssi)
1402{
1403 struct wpabuf *buf;
1404 const struct rrm_link_measurement_request *req;
1405 struct rrm_link_measurement_report report;
1406
1407 if (wpa_s->wpa_state != WPA_COMPLETED) {
1408 wpa_printf(MSG_INFO,
1409 "RRM: Ignoring link measurement request. Not associated");
1410 return;
1411 }
1412
1413 if (!wpa_s->rrm.rrm_used) {
1414 wpa_printf(MSG_INFO,
1415 "RRM: Ignoring link measurement request. Not RRM network");
1416 return;
1417 }
1418
1419 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) {
1420 wpa_printf(MSG_INFO,
1421 "RRM: Measurement report failed. TX power insertion not supported");
1422 return;
1423 }
1424
1425 req = (const struct rrm_link_measurement_request *) frame;
1426 if (len < sizeof(*req)) {
1427 wpa_printf(MSG_INFO,
1428 "RRM: Link measurement report failed. Request too short");
1429 return;
1430 }
1431
1432 os_memset(&report, 0, sizeof(report));
33468e53 1433 report.dialog_token = req->dialog_token;
ec493469
AS		 1434 report.tpc.eid = WLAN_EID_TPC_REPORT;
1435 report.tpc.len = 2;
33468e53
JM		 1436 /* Note: The driver is expected to update report.tpc.tx_power and
1437 * report.tpc.link_margin subfields when sending out this frame.
1438 * Similarly, the driver would need to update report.rx_ant_id and
1439 * report.tx_ant_id subfields. */
ec493469 1440 report.rsni = 255; /* 255 indicates that RSNI is not available */
b3060bf9 1441 report.rcpi = rssi_to_rcpi(rssi);
ec493469
AS		 1442
1443 /* action_category + action_code */
1444 buf = wpabuf_alloc(2 + sizeof(report));
1445 if (buf == NULL) {
1446 wpa_printf(MSG_ERROR,
1447 "RRM: Link measurement report failed. Buffer allocation failed");
1448 return;
1449 }
1450
1451 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
1452 wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT);
1453 wpabuf_put_data(buf, &report, sizeof(report));
7ba94fc4 1454 wpa_hexdump_buf(MSG_DEBUG, "RRM: Link measurement report", buf);
ec493469
AS		 1455
1456 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src,
1457 wpa_s->own_addr, wpa_s->bssid,
1458 wpabuf_head(buf), wpabuf_len(buf), 0)) {
1459 wpa_printf(MSG_ERROR,
1460 "RRM: Link measurement report failed. Send action failed");
1461 }
1462 wpabuf_free(buf);
1463}
76196ddb
AS		 1464
1465
1466int wpas_beacon_rep_scan_process(struct wpa_supplicant *wpa_s,
1467 struct wpa_scan_results *scan_res,
1468 struct scan_info *info)
1469{
1470 size_t i = 0;
1471 struct wpabuf *buf = NULL;
1472
1473 if (!wpa_s->beacon_rep_data.token)
1474 return 0;
1475
1476 if (!wpa_s->current_bss)
1477 goto out;
1478
1479 /* If the measurement was aborted, don't report partial results */
1480 if (info->aborted)
1481 goto out;
1482
1483 wpa_printf(MSG_DEBUG, "RRM: TSF BSSID: " MACSTR " current BSS: " MACSTR,
1484 MAC2STR(info->scan_start_tsf_bssid),
1485 MAC2STR(wpa_s->current_bss->bssid));
d7342014
JM		 1486 if ((wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) &&
1487 os_memcmp(info->scan_start_tsf_bssid, wpa_s->current_bss->bssid,
1488 ETH_ALEN) != 0) {
1489 wpa_printf(MSG_DEBUG,
1490 "RRM: Ignore scan results due to mismatching TSF BSSID");
76196ddb 1491 goto out;
d7342014 1492 }
76196ddb
AS		 1493
1494 for (i = 0; i < scan_res->num; i++) {
1495 struct wpa_bss *bss =
1496 wpa_bss_get_bssid(wpa_s, scan_res->res[i]->bssid);
1497
1498 if (!bss)
1499 continue;
1500
d7342014
JM		 1501 if ((wpa_s->drv_rrm_flags &
1502 WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) &&
1503 os_memcmp(scan_res->res[i]->tsf_bssid,
1504 wpa_s->current_bss->bssid, ETH_ALEN) != 0) {
1505 wpa_printf(MSG_DEBUG,
1506 "RRM: Ignore scan result for " MACSTR
1507 " due to mismatching TSF BSSID" MACSTR,
1508 MAC2STR(scan_res->res[i]->bssid),
1509 MAC2STR(scan_res->res[i]->tsf_bssid));
76196ddb 1510 continue;
d7342014
JM		 1511 }
1512
23eead4d
AS		 1513 /*
1514 * Don't report results that were not received during the
1515 * current measurement.
1516 */
d7342014
JM		 1517 if (!(wpa_s->drv_rrm_flags &
1518 WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT)) {
1519 struct os_reltime update_time, diff;
1520
1521 /* For now, allow 8 ms older results due to some
1522 * unknown issue with cfg80211 BSS table updates during
1523 * a scan with the current BSS.
1524 * TODO: Fix this more properly to avoid having to have
1525 * this type of hacks in place. */
1526 calculate_update_time(&scan_res->fetch_time,
1527 scan_res->res[i]->age,
1528 &update_time);
1529 os_reltime_sub(&wpa_s->beacon_rep_scan,
1530 &update_time, &diff);
1531 if (os_reltime_before(&update_time,
1532 &wpa_s->beacon_rep_scan) &&
1533 (diff.sec || diff.usec >= 8000)) {
1534 wpa_printf(MSG_DEBUG,
1535 "RRM: Ignore scan result for " MACSTR
1536 " due to old update (age(ms) %u, calculated age %u.%06u seconds)",
1537 MAC2STR(scan_res->res[i]->bssid),
1538 scan_res->res[i]->age,
1539 (unsigned int) diff.sec,
1540 (unsigned int) diff.usec);
1541 continue;
1542 }
23eead4d
AS		 1543 } else if (info->scan_start_tsf >
1544 scan_res->res[i]->parent_tsf) {
76196ddb 1545 continue;
23eead4d 1546 }
76196ddb
AS		 1547
1548 if (wpas_add_beacon_rep(wpa_s, &buf, bss, info->scan_start_tsf,
1549 scan_res->res[i]->parent_tsf) < 0)
1550 break;
1551 }
1552
1553 if (!buf && wpas_beacon_rep_no_results(wpa_s, &buf))
1554 goto out;
1555
1556 wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", buf);
1557
1558 wpas_rrm_send_msr_report(wpa_s, buf);
1559 wpabuf_free(buf);
1560
1561out:
1562 wpas_clear_beacon_rep_data(wpa_s);
1563 return 1;
1564}
1565
1566
1567void wpas_clear_beacon_rep_data(struct wpa_supplicant *wpa_s)
1568{
1569 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
1570
1571 eloop_cancel_timeout(wpas_rrm_scan_timeout, wpa_s, NULL);
1572 bitfield_free(data->eids);
1573 os_free(data->scan_params.freqs);
1574 os_memset(data, 0, sizeof(*data));
1575}
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