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[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
395static void wpas_rrm_send_msr_report(struct wpa_supplicant *wpa_s,
396 struct wpabuf *buf)
397{
398 int len = wpabuf_len(buf);
399 const u8 *pos = wpabuf_head_u8(buf), *next = pos;
400
401#define MPDU_REPORT_LEN (int) (IEEE80211_MAX_MMPDU_SIZE - IEEE80211_HDRLEN - 3)
402
403 while (len) {
404 int send_len = (len > MPDU_REPORT_LEN) ? next - pos : len;
405
406 if (send_len == len ||
407 (send_len + next[1] + 2) > MPDU_REPORT_LEN) {
408 wpas_rrm_send_msr_report_mpdu(wpa_s, pos, send_len);
409 len -= send_len;
410 pos = next;
411 }
412
b696f791
JM		 413 if (len)
414 next += next[1] + 2;
0c73e410
AS		 415 }
416#undef MPDU_REPORT_LEN
417}
418
419
76196ddb
AS		 420static int wpas_add_channel(u8 op_class, u8 chan, u8 num_primary_channels,
421 int *freqs)
422{
423 size_t i;
424
425 for (i = 0; i < num_primary_channels; i++) {
426 u8 primary_chan = chan - (2 * num_primary_channels - 2) + i * 4;
427
428 freqs[i] = ieee80211_chan_to_freq(NULL, op_class, primary_chan);
40e9a3f3
JM		 429 /* ieee80211_chan_to_freq() is not really meant for this
430 * conversion of 20 MHz primary channel numbers for wider VHT
431 * channels, so handle those as special cases here for now. */
432 if (freqs[i] < 0 &&
433 (op_class == 128 || op_class == 129 || op_class == 130))
434 freqs[i] = 5000 + 5 * primary_chan;
76196ddb
AS		 435 if (freqs[i] < 0) {
436 wpa_printf(MSG_DEBUG,
437 "Beacon Report: Invalid channel %u",
438 chan);
439 return -1;
440 }
441 }
442
443 return 0;
444}
445
446
447static int * wpas_add_channels(const struct oper_class_map *op,
448 struct hostapd_hw_modes *mode, int active,
449 const u8 *channels, const u8 size)
450{
451 int *freqs, *next_freq;
452 u8 num_primary_channels, i;
453 u8 num_chans;
454
455 num_chans = channels ? size :
456 (op->max_chan - op->min_chan) / op->inc + 1;
457
458 if (op->bw == BW80 || op->bw == BW80P80)
459 num_primary_channels = 4;
460 else if (op->bw == BW160)
461 num_primary_channels = 8;
462 else
463 num_primary_channels = 1;
464
465 /* one extra place for the zero-terminator */
466 freqs = os_calloc(num_chans * num_primary_channels + 1, sizeof(*freqs));
467 if (!freqs) {
468 wpa_printf(MSG_ERROR,
469 "Beacon Report: Failed to allocate freqs array");
470 return NULL;
471 }
472
473 next_freq = freqs;
474 for (i = 0; i < num_chans; i++) {
475 u8 chan = channels ? channels[i] : op->min_chan + i * op->inc;
476 enum chan_allowed res = verify_channel(mode, chan, op->bw);
477
478 if (res == NOT_ALLOWED || (res == NO_IR && active))
479 continue;
480
481 if (wpas_add_channel(op->op_class, chan, num_primary_channels,
482 next_freq) < 0) {
483 os_free(freqs);
484 return NULL;
485 }
486
487 next_freq += num_primary_channels;
488 }
489
490 if (!freqs[0]) {
491 os_free(freqs);
492 return NULL;
493 }
494
495 return freqs;
496}
497
498
499static int * wpas_op_class_freqs(const struct oper_class_map *op,
500 struct hostapd_hw_modes *mode, int active)
501{
502 u8 channels_80mhz[] = { 42, 58, 106, 122, 138, 155 };
503 u8 channels_160mhz[] = { 50, 114 };
504
505 /*
506 * When adding all channels in the operating class, 80 + 80 MHz
507 * operating classes are like 80 MHz channels because we add all valid
508 * channels anyway.
509 */
510 if (op->bw == BW80 || op->bw == BW80P80)
511 return wpas_add_channels(op, mode, active, channels_80mhz,
512 ARRAY_SIZE(channels_80mhz));
513
514 if (op->bw == BW160)
515 return wpas_add_channels(op, mode, active, channels_160mhz,
516 ARRAY_SIZE(channels_160mhz));
517
518 return wpas_add_channels(op, mode, active, NULL, 0);
519}
520
521
522static int * wpas_channel_report_freqs(struct wpa_supplicant *wpa_s, int active,
523 const char *country, const u8 *subelems,
524 size_t len)
525{
526 int *freqs = NULL, *new_freqs;
527 const u8 *end = subelems + len;
528
529 while (end - subelems > 2) {
530 const struct oper_class_map *op;
531 const u8 *ap_chan_elem, *pos;
532 u8 left;
533 struct hostapd_hw_modes *mode;
534
535 ap_chan_elem = get_ie(subelems, end - subelems,
536 WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL);
537 if (!ap_chan_elem)
538 break;
539 pos = ap_chan_elem + 2;
540 left = ap_chan_elem[1];
541 if (left < 1)
542 break;
543 subelems = ap_chan_elem + 2 + left;
544
545 op = get_oper_class(country, *pos);
546 if (!op) {
547 wpa_printf(MSG_DEBUG,
548 "Beacon request: unknown operating class in AP Channel Report subelement %u",
549 *pos);
550 goto out;
551 }
552 pos++;
553 left--;
554
555 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode);
556 if (!mode)
557 continue;
558
559 /*
560 * For 80 + 80 MHz operating classes, this AP Channel Report
561 * element should be followed by another element specifying
562 * the second 80 MHz channel. For now just add this 80 MHz
563 * channel, the second 80 MHz channel will be added when the
564 * next element is parsed.
565 * TODO: Verify that this AP Channel Report element is followed
566 * by a corresponding AP Channel Report element as specified in
567 * IEEE Std 802.11-2016, 11.11.9.1.
568 */
569 new_freqs = wpas_add_channels(op, mode, active, pos, left);
570 if (new_freqs)
571 int_array_concat(&freqs, new_freqs);
572
573 os_free(new_freqs);
574 }
575
576 return freqs;
577out:
578 os_free(freqs);
579 return NULL;
580}
581
582
583static int * wpas_beacon_request_freqs(struct wpa_supplicant *wpa_s,
584 u8 op_class, u8 chan, int active,
585 const u8 *subelems, size_t len)
586{
587 int *freqs = NULL, *ext_freqs = NULL;
588 struct hostapd_hw_modes *mode;
589 const char *country = NULL;
590 const struct oper_class_map *op;
591 const u8 *elem;
592
593 if (!wpa_s->current_bss)
594 return NULL;
595 elem = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
596 if (elem && elem[1] >= 2)
597 country = (const char *) (elem + 2);
598
599 op = get_oper_class(country, op_class);
600 if (!op) {
601 wpa_printf(MSG_DEBUG,
602 "Beacon request: invalid operating class %d",
603 op_class);
604 return NULL;
605 }
606
607 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode);
608 if (!mode)
609 return NULL;
610
611 switch (chan) {
612 case 0:
613 freqs = wpas_op_class_freqs(op, mode, active);
614 if (!freqs)
615 return NULL;
616 break;
617 case 255:
618 /* freqs will be added from AP channel subelements */
619 break;
620 default:
621 freqs = wpas_add_channels(op, mode, active, &chan, 1);
622 if (!freqs)
623 return NULL;
624 break;
625 }
626
627 ext_freqs = wpas_channel_report_freqs(wpa_s, active, country, subelems,
628 len);
629 if (ext_freqs) {
630 int_array_concat(&freqs, ext_freqs);
631 os_free(ext_freqs);
922dcf1b 632 int_array_sort_unique(freqs);
76196ddb
AS		 633 }
634
635 return freqs;
636}
637
638
30eddf35
JB		 639static int wpas_get_op_chan_phy(int freq, const u8 *ies, size_t ies_len,
640 u8 *op_class, u8 *chan, u8 *phy_type)
76196ddb
AS		 641{
642 const u8 *ie;
643 int sec_chan = 0, vht = 0;
644 struct ieee80211_ht_operation *ht_oper = NULL;
645 struct ieee80211_vht_operation *vht_oper = NULL;
646 u8 seg0, seg1;
647
648 ie = get_ie(ies, ies_len, WLAN_EID_HT_OPERATION);
649 if (ie && ie[1] >= sizeof(struct ieee80211_ht_operation)) {
650 u8 sec_chan_offset;
651
652 ht_oper = (struct ieee80211_ht_operation *) (ie + 2);
653 sec_chan_offset = ht_oper->ht_param &
654 HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
655 if (sec_chan_offset == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
656 sec_chan = 1;
657 else if (sec_chan_offset ==
658 HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
659 sec_chan = -1;
660 }
661
662 ie = get_ie(ies, ies_len, WLAN_EID_VHT_OPERATION);
663 if (ie && ie[1] >= sizeof(struct ieee80211_vht_operation)) {
664 vht_oper = (struct ieee80211_vht_operation *) (ie + 2);
665
666 switch (vht_oper->vht_op_info_chwidth) {
667 case 1:
668 seg0 = vht_oper->vht_op_info_chan_center_freq_seg0_idx;
669 seg1 = vht_oper->vht_op_info_chan_center_freq_seg1_idx;
670 if (seg1 && abs(seg1 - seg0) == 8)
671 vht = VHT_CHANWIDTH_160MHZ;
672 else if (seg1)
673 vht = VHT_CHANWIDTH_80P80MHZ;
674 else
675 vht = VHT_CHANWIDTH_80MHZ;
676 break;
677 case 2:
678 vht = VHT_CHANWIDTH_160MHZ;
679 break;
680 case 3:
681 vht = VHT_CHANWIDTH_80P80MHZ;
682 break;
683 default:
684 vht = VHT_CHANWIDTH_USE_HT;
685 break;
686 }
687 }
688
689 if (ieee80211_freq_to_channel_ext(freq, sec_chan, vht, op_class,
690 chan) == NUM_HOSTAPD_MODES) {
691 wpa_printf(MSG_DEBUG,
692 "Cannot determine operating class and channel");
693 return -1;
694 }
695
696 *phy_type = ieee80211_get_phy_type(freq, ht_oper != NULL,
697 vht_oper != NULL);
698 if (*phy_type == PHY_TYPE_UNSPECIFIED) {
699 wpa_printf(MSG_DEBUG, "Cannot determine phy type");
700 return -1;
701 }
702
703 return 0;
704}
705
706
707static int wpas_beacon_rep_add_frame_body(struct bitfield *eids,
708 enum beacon_report_detail detail,
709 struct wpa_bss *bss, u8 *buf,
710 size_t buf_len)
711{
712 u8 *ies = (u8 *) (bss + 1);
713 size_t ies_len = bss->ie_len ? bss->ie_len : bss->beacon_ie_len;
714 u8 *pos = buf;
715 int rem_len;
716
717 rem_len = 255 - sizeof(struct rrm_measurement_beacon_report) -
718 sizeof(struct rrm_measurement_report_element) - 2;
719
720 if (detail > BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) {
721 wpa_printf(MSG_DEBUG,
722 "Beacon Request: Invalid reporting detail: %d",
723 detail);
724 return -1;
725 }
726
727 if (detail == BEACON_REPORT_DETAIL_NONE)
728 return 0;
729
730 /*
731 * Minimal frame body subelement size: EID(1) + length(1) + TSF(8) +
732 * beacon interval(2) + capabilities(2) = 14 bytes
733 */
734 if (buf_len < 14)
735 return 0;
736
737 *pos++ = WLAN_BEACON_REPORT_SUBELEM_FRAME_BODY;
738 /* The length will be filled later */
739 pos++;
740 WPA_PUT_LE64(pos, bss->tsf);
741 pos += sizeof(bss->tsf);
742 WPA_PUT_LE16(pos, bss->beacon_int);
743 pos += 2;
744 WPA_PUT_LE16(pos, bss->caps);
745 pos += 2;
746
747 rem_len -= pos - buf;
748
749 /*
750 * According to IEEE Std 802.11-2016, 9.4.2.22.7, if the reported frame
751 * body subelement causes the element to exceed the maximum element
752 * size, the subelement is truncated so that the last IE is a complete
753 * IE. So even when required to report all IEs, add elements one after
754 * the other and stop once there is no more room in the measurement
755 * element.
756 */
757 while (ies_len > 2 && 2U + ies[1] <= ies_len && rem_len > 0) {
758 if (detail == BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS ||
759 (eids && bitfield_is_set(eids, ies[0]))) {
760 u8 eid = ies[0], elen = ies[1];
761
762 if ((eid == WLAN_EID_TIM || eid == WLAN_EID_RSN) &&
763 elen > 4)
764 elen = 4;
765 /*
766 * TODO: Truncate IBSS DFS element as described in
767 * IEEE Std 802.11-2016, 9.4.2.22.7.
768 */
769
770 if (2 + elen > buf + buf_len - pos ||
771 2 + elen > rem_len)
772 break;
773
774 *pos++ = ies[0];
775 *pos++ = elen;
776 os_memcpy(pos, ies + 2, elen);
777 pos += elen;
778 rem_len -= 2 + elen;
779 }
780
781 ies_len -= 2 + ies[1];
782 ies += 2 + ies[1];
783 }
784
785 /* Now the length is known */
786 buf[1] = pos - buf - 2;
787 return pos - buf;
788}
789
790
791static int wpas_add_beacon_rep(struct wpa_supplicant *wpa_s,
792 struct wpabuf **wpa_buf, struct wpa_bss *bss,
793 u64 start, u64 parent_tsf)
794{
795 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
796 u8 *ie = (u8 *) (bss + 1);
797 size_t ie_len = bss->ie_len + bss->beacon_ie_len;
798 int ret;
891aa65b 799 u8 *buf;
76196ddb
AS		 800 struct rrm_measurement_beacon_report *rep;
801
802 if (os_memcmp(data->bssid, broadcast_ether_addr, ETH_ALEN) != 0 &&
803 os_memcmp(data->bssid, bss->bssid, ETH_ALEN) != 0)
804 return 0;
805
806 if (data->ssid_len &&
807 (data->ssid_len != bss->ssid_len ||
808 os_memcmp(data->ssid, bss->ssid, bss->ssid_len) != 0))
809 return 0;
810
891aa65b
AS		 811 /* Maximum element length: beacon report element + reported frame body
812 * subelement + all IEs of the reported beacon */
813 buf = os_malloc(sizeof(*rep) + 14 + ie_len);
814 if (!buf)
815 return -1;
816
76196ddb
AS		 817 rep = (struct rrm_measurement_beacon_report *) buf;
818 if (wpas_get_op_chan_phy(bss->freq, ie, ie_len, &rep->op_class,
891aa65b
AS		 819 &rep->channel, &rep->report_info) < 0) {
820 ret = 0;
821 goto out;
822 }
76196ddb
AS		 823
824 rep->start_time = host_to_le64(start);
825 rep->duration = host_to_le16(data->scan_params.duration);
826 rep->rcpi = rssi_to_rcpi(bss->level);
827 rep->rsni = 255; /* 255 indicates that RSNI is not available */
828 os_memcpy(rep->bssid, bss->bssid, ETH_ALEN);
829 rep->antenna_id = 0; /* unknown */
830 rep->parent_tsf = host_to_le32(parent_tsf);
831
832 ret = wpas_beacon_rep_add_frame_body(data->eids, data->report_detail,
891aa65b 833 bss, rep->variable, 14 + ie_len);
76196ddb 834 if (ret < 0)
891aa65b 835 goto out;
76196ddb 836
891aa65b
AS		 837 ret = wpas_rrm_report_elem(wpa_buf, wpa_s->beacon_rep_data.token,
838 MEASUREMENT_REPORT_MODE_ACCEPT,
839 MEASURE_TYPE_BEACON, buf,
840 ret + sizeof(*rep));
841out:
842 os_free(buf);
843 return ret;
76196ddb
AS		 844}
845
846
847static int wpas_beacon_rep_no_results(struct wpa_supplicant *wpa_s,
848 struct wpabuf **buf)
849{
5cda3508 850 return wpas_rrm_report_elem(buf, wpa_s->beacon_rep_data.token,
76196ddb
AS		 851 MEASUREMENT_REPORT_MODE_ACCEPT,
852 MEASURE_TYPE_BEACON, NULL, 0);
853}
854
855
856static void wpas_beacon_rep_table(struct wpa_supplicant *wpa_s,
857 struct wpabuf **buf)
858{
859 size_t i;
860
861 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
862 if (wpas_add_beacon_rep(wpa_s, buf, wpa_s->last_scan_res[i],
863 0, 0) < 0)
864 break;
865 }
866
867 if (!(*buf))
868 wpas_beacon_rep_no_results(wpa_s, buf);
869
870 wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", *buf);
871}
872
873
3756acfd 874void wpas_rrm_refuse_request(struct wpa_supplicant *wpa_s)
76196ddb 875{
b3c148e9
AS		 876 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr)) {
877 struct wpabuf *buf = NULL;
878
879 if (wpas_rrm_report_elem(&buf, wpa_s->beacon_rep_data.token,
880 MEASUREMENT_REPORT_MODE_REJECT_REFUSED,
881 MEASURE_TYPE_BEACON, NULL, 0)) {
882 wpa_printf(MSG_ERROR, "RRM: Memory allocation failed");
883 wpabuf_free(buf);
884 return;
885 }
76196ddb 886
b3c148e9 887 wpas_rrm_send_msr_report(wpa_s, buf);
76196ddb 888 wpabuf_free(buf);
76196ddb
AS		 889 }
890
76196ddb 891 wpas_clear_beacon_rep_data(wpa_s);
76196ddb
AS		 892}
893
894
895static void wpas_rrm_scan_timeout(void *eloop_ctx, void *timeout_ctx)
896{
897 struct wpa_supplicant *wpa_s = eloop_ctx;
898 struct wpa_driver_scan_params *params =
899 &wpa_s->beacon_rep_data.scan_params;
d7342014 900 u16 prev_duration = params->duration;
76196ddb
AS		 901
902 if (!wpa_s->current_bss)
903 return;
904
d7342014
JM		 905 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL) &&
906 params->duration) {
907 wpa_printf(MSG_DEBUG,
908 "RRM: Cannot set scan duration due to missing driver support");
909 params->duration = 0;
910 }
911 os_get_reltime(&wpa_s->beacon_rep_scan);
76196ddb
AS		 912 if (wpa_s->scanning || wpas_p2p_in_progress(wpa_s) ||
913 wpa_supplicant_trigger_scan(wpa_s, params))
914 wpas_rrm_refuse_request(wpa_s);
d7342014 915 params->duration = prev_duration;
76196ddb
AS		 916}
917
918
919static int wpas_rm_handle_beacon_req_subelem(struct wpa_supplicant *wpa_s,
920 struct beacon_rep_data *data,
921 u8 sid, u8 slen, const u8 *subelem)
922{
923 u8 report_info, i;
924
925 switch (sid) {
926 case WLAN_BEACON_REQUEST_SUBELEM_SSID:
927 if (!slen) {
928 wpa_printf(MSG_DEBUG,
929 "SSID subelement with zero length - wildcard SSID");
930 break;
931 }
932
933 if (slen > SSID_MAX_LEN) {
934 wpa_printf(MSG_DEBUG,
935 "Invalid SSID subelement length: %u", slen);
936 return -1;
937 }
938
939 data->ssid_len = slen;
940 os_memcpy(data->ssid, subelem, data->ssid_len);
941 break;
942 case WLAN_BEACON_REQUEST_SUBELEM_INFO:
943 if (slen != 2) {
944 wpa_printf(MSG_DEBUG,
945 "Invalid reporting information subelement length: %u",
946 slen);
947 return -1;
948 }
949
950 report_info = subelem[0];
951 if (report_info != 0) {
952 wpa_printf(MSG_DEBUG,
953 "reporting information=%u is not supported",
954 report_info);
955 return 0;
956 }
957 break;
958 case WLAN_BEACON_REQUEST_SUBELEM_DETAIL:
959 if (slen != 1) {
960 wpa_printf(MSG_DEBUG,
961 "Invalid reporting detail subelement length: %u",
962 slen);
963 return -1;
964 }
965
966 data->report_detail = subelem[0];
967 if (data->report_detail >
968 BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) {
969 wpa_printf(MSG_DEBUG, "Invalid reporting detail: %u",
970 subelem[0]);
705e2909 971 return -1;
76196ddb
AS		 972 }
973
974 break;
975 case WLAN_BEACON_REQUEST_SUBELEM_REQUEST:
976 if (data->report_detail !=
977 BEACON_REPORT_DETAIL_REQUESTED_ONLY) {
978 wpa_printf(MSG_DEBUG,
979 "Beacon request: request subelement is present but report detail is %u",
980 data->report_detail);
981 return -1;
982 }
983
984 if (!slen) {
985 wpa_printf(MSG_DEBUG,
986 "Invalid request subelement length: %u",
987 slen);
988 return -1;
989 }
990
991 if (data->eids) {
992 wpa_printf(MSG_DEBUG,
993 "Beacon Request: Request subelement appears more than once");
994 return -1;
995 }
996
997 data->eids = bitfield_alloc(255);
998 if (!data->eids) {
999 wpa_printf(MSG_DEBUG, "Failed to allocate EIDs bitmap");
1000 return -1;
1001 }
1002
1003 for (i = 0; i < slen; i++)
1004 bitfield_set(data->eids, subelem[i]);
1005 break;
1006 case WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL:
1007 /* Skip - it will be processed when freqs are added */
1008 break;
1009 default:
1010 wpa_printf(MSG_DEBUG,
1011 "Beacon request: Unknown subelement id %u", sid);
1012 break;
1013 }
1014
1015 return 1;
1016}
1017
1018
1019/**
1020 * Returns 0 if the next element can be processed, 1 if some operation was
1021 * triggered, and -1 if processing failed (i.e., the element is in invalid
1022 * format or an internal error occurred).
1023 */
1024static int
1025wpas_rm_handle_beacon_req(struct wpa_supplicant *wpa_s,
1026 u8 elem_token, int duration_mandatory,
1027 const struct rrm_measurement_beacon_request *req,
1028 size_t len, struct wpabuf **buf)
1029{
1030 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
1031 struct wpa_driver_scan_params *params = &data->scan_params;
1032 const u8 *subelems;
1033 size_t elems_len;
1034 u16 rand_interval;
1035 u32 interval_usec;
1036 u32 _rand;
1037 int ret = 0, res;
705e2909 1038 u8 reject_mode;
76196ddb 1039
76196ddb
AS		 1040 if (len < sizeof(*req))
1041 return -1;
de6ec8b5 1042
d7342014
JM		 1043 if (req->mode != BEACON_REPORT_MODE_PASSIVE &&
1044 req->mode != BEACON_REPORT_MODE_ACTIVE &&
1045 req->mode != BEACON_REPORT_MODE_TABLE)
de6ec8b5
JM		 1046 return 0;
1047
76196ddb
AS		 1048 subelems = req->variable;
1049 elems_len = len - sizeof(*req);
1050 rand_interval = le_to_host16(req->rand_interval);
1051
4d70b2a4 1052 os_free(params->freqs);
76196ddb
AS		 1053 os_memset(params, 0, sizeof(*params));
1054
1055 data->token = elem_token;
1056
1057 /* default reporting detail is all fixed length fields and all
1058 * elements */
1059 data->report_detail = BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS;
1060 os_memcpy(data->bssid, req->bssid, ETH_ALEN);
1061
1062 while (elems_len >= 2) {
1063 if (subelems[1] > elems_len - 2) {
1064 wpa_printf(MSG_DEBUG,
1065 "Beacon Request: Truncated subelement");
1066 ret = -1;
1067 goto out;
1068 }
1069
1070 res = wpas_rm_handle_beacon_req_subelem(
1071 wpa_s, data, subelems[0], subelems[1], &subelems[2]);
705e2909 1072 if (res < 0) {
76196ddb
AS		 1073 ret = res;
1074 goto out;
705e2909
AS		 1075 } else if (!res) {
1076 reject_mode = MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE;
1077 goto out_reject;
76196ddb
AS		 1078 }
1079
1080 elems_len -= 2 + subelems[1];
1081 subelems += 2 + subelems[1];
1082 }
1083
1084 if (req->mode == BEACON_REPORT_MODE_TABLE) {
1085 wpas_beacon_rep_table(wpa_s, buf);
1086 goto out;
1087 }
1088
1089 params->freqs = wpas_beacon_request_freqs(
1090 wpa_s, req->oper_class, req->channel,
1091 req->mode == BEACON_REPORT_MODE_ACTIVE,
1092 req->variable, len - sizeof(*req));
1093 if (!params->freqs) {
1094 wpa_printf(MSG_DEBUG, "Beacon request: No valid channels");
705e2909
AS		 1095 reject_mode = MEASUREMENT_REPORT_MODE_REJECT_REFUSED;
1096 goto out_reject;
76196ddb
AS		 1097 }
1098
1099 params->duration = le_to_host16(req->duration);
1100 params->duration_mandatory = duration_mandatory;
1101 if (!params->duration) {
1102 wpa_printf(MSG_DEBUG, "Beacon request: Duration is 0");
1103 ret = -1;
1104 goto out;
1105 }
1106
1107 params->only_new_results = 1;
1108
1109 if (req->mode == BEACON_REPORT_MODE_ACTIVE) {
1110 params->ssids[params->num_ssids].ssid = data->ssid;
1111 params->ssids[params->num_ssids++].ssid_len = data->ssid_len;
1112 }
1113
1114 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
1115 _rand = os_random();
1116 interval_usec = (_rand % (rand_interval + 1)) * 1024;
1117 eloop_register_timeout(0, interval_usec, wpas_rrm_scan_timeout, wpa_s,
1118 NULL);
1119 return 1;
705e2909
AS		 1120out_reject:
1121 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) &&
1122 wpas_rrm_report_elem(buf, elem_token, reject_mode,
1123 MEASURE_TYPE_BEACON, NULL, 0) < 0) {
1124 wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
1125 ret = -1;
1126 }
76196ddb
AS		 1127out:
1128 wpas_clear_beacon_rep_data(wpa_s);
1129 return ret;
1130}
1131
1132
9664ab8b
AS		 1133static int
1134wpas_rrm_handle_msr_req_element(
1135 struct wpa_supplicant *wpa_s,
1136 const struct rrm_measurement_request_element *req,
1137 struct wpabuf **buf)
ec493469 1138{
76196ddb
AS		 1139 int duration_mandatory;
1140
9664ab8b
AS		 1141 wpa_printf(MSG_DEBUG, "Measurement request type %d token %d",
1142 req->type, req->token);
1143
e1b96e11
AS		 1144 if (req->mode & MEASUREMENT_REQUEST_MODE_ENABLE) {
1145 /* Enable bit is not supported for now */
1146 wpa_printf(MSG_DEBUG, "RRM: Enable bit not supported, ignore");
1147 return 0;
1148 }
1149
1150 if ((req->mode & MEASUREMENT_REQUEST_MODE_PARALLEL) &&
1151 req->type > MEASURE_TYPE_RPI_HIST) {
1152 /* Parallel measurements are not supported for now */
1153 wpa_printf(MSG_DEBUG,
1154 "RRM: Parallel measurements are not supported, reject");
1155 goto reject;
1156 }
1157
76196ddb
AS		 1158 duration_mandatory =
1159 !!(req->mode & MEASUREMENT_REQUEST_MODE_DURATION_MANDATORY);
1160
9664ab8b
AS		 1161 switch (req->type) {
1162 case MEASURE_TYPE_LCI:
3c716fdb 1163 return wpas_rrm_build_lci_report(wpa_s, req, buf);
76196ddb 1164 case MEASURE_TYPE_BEACON:
d7342014
JM		 1165 if (duration_mandatory &&
1166 !(wpa_s->drv_rrm_flags &
1167 WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL)) {
1168 wpa_printf(MSG_DEBUG,
1169 "RRM: Driver does not support dwell time configuration - reject beacon report with mandatory duration");
1170 goto reject;
1171 }
76196ddb
AS		 1172 return wpas_rm_handle_beacon_req(wpa_s, req->token,
1173 duration_mandatory,
1174 (const void *) req->variable,
1175 req->len - 3, buf);
9664ab8b 1176 default:
ec493469 1177 wpa_printf(MSG_INFO,
9664ab8b
AS		 1178 "RRM: Unsupported radio measurement type %u",
1179 req->type);
1180 break;
ec493469
AS		 1181 }
1182
e1b96e11 1183reject:
b3c148e9
AS		 1184 if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) &&
1185 wpas_rrm_report_elem(buf, req->token,
e1b96e11
AS		 1186 MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE,
1187 req->type, NULL, 0) < 0) {
1188 wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
1189 return -1;
1190 }
1191
9664ab8b
AS		 1192 return 0;
1193}
ec493469 1194
ec493469 1195
9664ab8b
AS		 1196static struct wpabuf *
1197wpas_rrm_process_msr_req_elems(struct wpa_supplicant *wpa_s, const u8 *pos,
1198 size_t len)
1199{
1200 struct wpabuf *buf = NULL;
ec493469 1201
9664ab8b 1202 while (len) {
332bf5d3 1203 const struct rrm_measurement_request_element *req;
9664ab8b 1204 int res;
ec493469 1205
9664ab8b 1206 if (len < 2) {
332bf5d3
AS		 1207 wpa_printf(MSG_DEBUG, "RRM: Truncated element");
1208 goto out;
1209 }
1210
9664ab8b 1211 req = (const struct rrm_measurement_request_element *) pos;
332bf5d3
AS		 1212 if (req->eid != WLAN_EID_MEASURE_REQUEST) {
1213 wpa_printf(MSG_DEBUG,
1214 "RRM: Expected Measurement Request element, but EID is %u",
1215 req->eid);
1216 goto out;
1217 }
1218
1219 if (req->len < 3) {
1220 wpa_printf(MSG_DEBUG, "RRM: Element length too short");
1221 goto out;
1222 }
332bf5d3 1223
9664ab8b 1224 if (req->len > len - 2) {
332bf5d3
AS		 1225 wpa_printf(MSG_DEBUG, "RRM: Element length too long");
1226 goto out;
1227 }
ec493469 1228
9664ab8b
AS		 1229 res = wpas_rrm_handle_msr_req_element(wpa_s, req, &buf);
1230 if (res < 0)
1231 goto out;
ec493469 1232
9664ab8b
AS		 1233 pos += req->len + 2;
1234 len -= req->len + 2;
ec493469
AS		 1235 }
1236
9664ab8b
AS		 1237 return buf;
1238
1239out:
1240 wpabuf_free(buf);
1241 return NULL;
1242}
1243
1244
1245void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s,
b3c148e9 1246 const u8 *src, const u8 *dst,
9664ab8b
AS		 1247 const u8 *frame, size_t len)
1248{
0c73e410 1249 struct wpabuf *report;
9664ab8b
AS		 1250
1251 if (wpa_s->wpa_state != WPA_COMPLETED) {
1252 wpa_printf(MSG_INFO,
1253 "RRM: Ignoring radio measurement request: Not associated");
1254 return;
1255 }
1256
1257 if (!wpa_s->rrm.rrm_used) {
1258 wpa_printf(MSG_INFO,
1259 "RRM: Ignoring radio measurement request: Not RRM network");
1260 return;
1261 }
1262
1263 if (len < 3) {
1264 wpa_printf(MSG_INFO,
1265 "RRM: Ignoring too short radio measurement request");
1266 return;
1267 }
1268
0c73e410 1269 wpa_s->rrm.token = *frame;
b3c148e9 1270 os_memcpy(wpa_s->rrm.dst_addr, dst, ETH_ALEN);
9664ab8b
AS		 1271
1272 /* Number of repetitions is not supported */
1273
1274 report = wpas_rrm_process_msr_req_elems(wpa_s, frame + 3, len - 3);
ec493469
AS		 1275 if (!report)
1276 return;
1277
0c73e410 1278 wpas_rrm_send_msr_report(wpa_s, report);
332bf5d3 1279 wpabuf_free(report);
ec493469
AS		 1280}
1281
1282
1283void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s,
1284 const u8 *src,
1285 const u8 *frame, size_t len,
1286 int rssi)
1287{
1288 struct wpabuf *buf;
1289 const struct rrm_link_measurement_request *req;
1290 struct rrm_link_measurement_report report;
1291
1292 if (wpa_s->wpa_state != WPA_COMPLETED) {
1293 wpa_printf(MSG_INFO,
1294 "RRM: Ignoring link measurement request. Not associated");
1295 return;
1296 }
1297
1298 if (!wpa_s->rrm.rrm_used) {
1299 wpa_printf(MSG_INFO,
1300 "RRM: Ignoring link measurement request. Not RRM network");
1301 return;
1302 }
1303
1304 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) {
1305 wpa_printf(MSG_INFO,
1306 "RRM: Measurement report failed. TX power insertion not supported");
1307 return;
1308 }
1309
1310 req = (const struct rrm_link_measurement_request *) frame;
1311 if (len < sizeof(*req)) {
1312 wpa_printf(MSG_INFO,
1313 "RRM: Link measurement report failed. Request too short");
1314 return;
1315 }
1316
1317 os_memset(&report, 0, sizeof(report));
33468e53 1318 report.dialog_token = req->dialog_token;
ec493469
AS		 1319 report.tpc.eid = WLAN_EID_TPC_REPORT;
1320 report.tpc.len = 2;
33468e53
JM		 1321 /* Note: The driver is expected to update report.tpc.tx_power and
1322 * report.tpc.link_margin subfields when sending out this frame.
1323 * Similarly, the driver would need to update report.rx_ant_id and
1324 * report.tx_ant_id subfields. */
ec493469 1325 report.rsni = 255; /* 255 indicates that RSNI is not available */
b3060bf9 1326 report.rcpi = rssi_to_rcpi(rssi);
ec493469
AS		 1327
1328 /* action_category + action_code */
1329 buf = wpabuf_alloc(2 + sizeof(report));
1330 if (buf == NULL) {
1331 wpa_printf(MSG_ERROR,
1332 "RRM: Link measurement report failed. Buffer allocation failed");
1333 return;
1334 }
1335
1336 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
1337 wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT);
1338 wpabuf_put_data(buf, &report, sizeof(report));
7ba94fc4 1339 wpa_hexdump_buf(MSG_DEBUG, "RRM: Link measurement report", buf);
ec493469
AS		 1340
1341 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src,
1342 wpa_s->own_addr, wpa_s->bssid,
1343 wpabuf_head(buf), wpabuf_len(buf), 0)) {
1344 wpa_printf(MSG_ERROR,
1345 "RRM: Link measurement report failed. Send action failed");
1346 }
1347 wpabuf_free(buf);
1348}
76196ddb
AS		 1349
1350
1351int wpas_beacon_rep_scan_process(struct wpa_supplicant *wpa_s,
1352 struct wpa_scan_results *scan_res,
1353 struct scan_info *info)
1354{
1355 size_t i = 0;
1356 struct wpabuf *buf = NULL;
1357
1358 if (!wpa_s->beacon_rep_data.token)
1359 return 0;
1360
1361 if (!wpa_s->current_bss)
1362 goto out;
1363
1364 /* If the measurement was aborted, don't report partial results */
1365 if (info->aborted)
1366 goto out;
1367
1368 wpa_printf(MSG_DEBUG, "RRM: TSF BSSID: " MACSTR " current BSS: " MACSTR,
1369 MAC2STR(info->scan_start_tsf_bssid),
1370 MAC2STR(wpa_s->current_bss->bssid));
d7342014
JM		 1371 if ((wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) &&
1372 os_memcmp(info->scan_start_tsf_bssid, wpa_s->current_bss->bssid,
1373 ETH_ALEN) != 0) {
1374 wpa_printf(MSG_DEBUG,
1375 "RRM: Ignore scan results due to mismatching TSF BSSID");
76196ddb 1376 goto out;
d7342014 1377 }
76196ddb
AS		 1378
1379 for (i = 0; i < scan_res->num; i++) {
1380 struct wpa_bss *bss =
1381 wpa_bss_get_bssid(wpa_s, scan_res->res[i]->bssid);
1382
1383 if (!bss)
1384 continue;
1385
d7342014
JM		 1386 if ((wpa_s->drv_rrm_flags &
1387 WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) &&
1388 os_memcmp(scan_res->res[i]->tsf_bssid,
1389 wpa_s->current_bss->bssid, ETH_ALEN) != 0) {
1390 wpa_printf(MSG_DEBUG,
1391 "RRM: Ignore scan result for " MACSTR
1392 " due to mismatching TSF BSSID" MACSTR,
1393 MAC2STR(scan_res->res[i]->bssid),
1394 MAC2STR(scan_res->res[i]->tsf_bssid));
76196ddb 1395 continue;
d7342014
JM		 1396 }
1397
23eead4d
AS		 1398 /*
1399 * Don't report results that were not received during the
1400 * current measurement.
1401 */
d7342014
JM		 1402 if (!(wpa_s->drv_rrm_flags &
1403 WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT)) {
1404 struct os_reltime update_time, diff;
1405
1406 /* For now, allow 8 ms older results due to some
1407 * unknown issue with cfg80211 BSS table updates during
1408 * a scan with the current BSS.
1409 * TODO: Fix this more properly to avoid having to have
1410 * this type of hacks in place. */
1411 calculate_update_time(&scan_res->fetch_time,
1412 scan_res->res[i]->age,
1413 &update_time);
1414 os_reltime_sub(&wpa_s->beacon_rep_scan,
1415 &update_time, &diff);
1416 if (os_reltime_before(&update_time,
1417 &wpa_s->beacon_rep_scan) &&
1418 (diff.sec || diff.usec >= 8000)) {
1419 wpa_printf(MSG_DEBUG,
1420 "RRM: Ignore scan result for " MACSTR
1421 " due to old update (age(ms) %u, calculated age %u.%06u seconds)",
1422 MAC2STR(scan_res->res[i]->bssid),
1423 scan_res->res[i]->age,
1424 (unsigned int) diff.sec,
1425 (unsigned int) diff.usec);
1426 continue;
1427 }
23eead4d
AS		 1428 } else if (info->scan_start_tsf >
1429 scan_res->res[i]->parent_tsf) {
76196ddb 1430 continue;
23eead4d 1431 }
76196ddb
AS		 1432
1433 if (wpas_add_beacon_rep(wpa_s, &buf, bss, info->scan_start_tsf,
1434 scan_res->res[i]->parent_tsf) < 0)
1435 break;
1436 }
1437
1438 if (!buf && wpas_beacon_rep_no_results(wpa_s, &buf))
1439 goto out;
1440
1441 wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", buf);
1442
1443 wpas_rrm_send_msr_report(wpa_s, buf);
1444 wpabuf_free(buf);
1445
1446out:
1447 wpas_clear_beacon_rep_data(wpa_s);
1448 return 1;
1449}
1450
1451
1452void wpas_clear_beacon_rep_data(struct wpa_supplicant *wpa_s)
1453{
1454 struct beacon_rep_data *data = &wpa_s->beacon_rep_data;
1455
1456 eloop_cancel_timeout(wpas_rrm_scan_timeout, wpa_s, NULL);
1457 bitfield_free(data->eids);
1458 os_free(data->scan_params.freqs);
1459 os_memset(data, 0, sizeof(*data));
1460}
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