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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 | ||
21 | static 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 | */ | |
43 | void 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 | */ | |
62 | void 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) { | |
bf3ab50f | 82 | wpa_msg(wpa_s, MSG_INFO, "RRM: Unexpected neighbor report"); |
ec493469 AS |
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 | 92 | wpabuf_put_data(neighbor_rep, report + 1, report_len - 1); |
bf3ab50f BG |
93 | wpa_dbg(wpa_s, MSG_DEBUG, "RRM: Notifying neighbor report (token = %d)", |
94 | report[0]); | |
ec493469 AS |
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 */ | |
bf15b155 | 104 | #ifndef ENOTCONN |
ec493469 | 105 | #define ENOTCONN -1 |
bf15b155 JM |
106 | #endif |
107 | #ifndef EOPNOTSUPP | |
ec493469 | 108 | #define EOPNOTSUPP -1 |
bf15b155 JM |
109 | #endif |
110 | #ifndef ECANCELED | |
ec493469 AS |
111 | #define ECANCELED -1 |
112 | #endif | |
bf15b155 | 113 | #endif |
ec493469 AS |
114 | |
115 | /* Measurement Request element + Location Subject + Maximum Age subelement */ | |
116 | #define MEASURE_REQUEST_LCI_LEN (3 + 1 + 4) | |
117 | /* Measurement Request element + Location Civic Request */ | |
118 | #define MEASURE_REQUEST_CIVIC_LEN (3 + 5) | |
119 | ||
120 | ||
121 | /** | |
122 | * wpas_rrm_send_neighbor_rep_request - Request a neighbor report from our AP | |
123 | * @wpa_s: Pointer to wpa_supplicant | |
124 | * @ssid: if not null, this is sent in the request. Otherwise, no SSID IE | |
125 | * is sent in the request. | |
126 | * @lci: if set, neighbor request will include LCI request | |
127 | * @civic: if set, neighbor request will include civic location request | |
128 | * @cb: Callback function to be called once the requested report arrives, or | |
129 | * timed out after RRM_NEIGHBOR_REPORT_TIMEOUT seconds. | |
130 | * In the former case, 'neighbor_rep' is a newly allocated wpabuf, and it's | |
131 | * the requester's responsibility to free it. | |
132 | * In the latter case NULL will be sent in 'neighbor_rep'. | |
133 | * @cb_ctx: Context value to send the callback function | |
134 | * Returns: 0 in case of success, negative error code otherwise | |
135 | * | |
136 | * In case there is a previous request which has not been answered yet, the | |
137 | * new request fails. The caller may retry after RRM_NEIGHBOR_REPORT_TIMEOUT. | |
138 | * Request must contain a callback function. | |
139 | */ | |
140 | int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s, | |
141 | const struct wpa_ssid_value *ssid, | |
142 | int lci, int civic, | |
143 | void (*cb)(void *ctx, | |
144 | struct wpabuf *neighbor_rep), | |
145 | void *cb_ctx) | |
146 | { | |
147 | struct wpabuf *buf; | |
148 | const u8 *rrm_ie; | |
149 | ||
150 | if (wpa_s->wpa_state != WPA_COMPLETED || wpa_s->current_ssid == NULL) { | |
bf3ab50f | 151 | wpa_dbg(wpa_s, MSG_DEBUG, "RRM: No connection, no RRM."); |
ec493469 AS |
152 | return -ENOTCONN; |
153 | } | |
154 | ||
155 | if (!wpa_s->rrm.rrm_used) { | |
bf3ab50f | 156 | wpa_dbg(wpa_s, MSG_DEBUG, "RRM: No RRM in current connection."); |
ec493469 AS |
157 | return -EOPNOTSUPP; |
158 | } | |
159 | ||
160 | rrm_ie = wpa_bss_get_ie(wpa_s->current_bss, | |
161 | WLAN_EID_RRM_ENABLED_CAPABILITIES); | |
162 | if (!rrm_ie || !(wpa_s->current_bss->caps & IEEE80211_CAP_RRM) || | |
163 | !(rrm_ie[2] & WLAN_RRM_CAPS_NEIGHBOR_REPORT)) { | |
bf3ab50f BG |
164 | wpa_dbg(wpa_s, MSG_DEBUG, |
165 | "RRM: No network support for Neighbor Report."); | |
ec493469 AS |
166 | return -EOPNOTSUPP; |
167 | } | |
168 | ||
ec493469 AS |
169 | /* Refuse if there's a live request */ |
170 | if (wpa_s->rrm.notify_neighbor_rep) { | |
bf3ab50f BG |
171 | wpa_dbg(wpa_s, MSG_DEBUG, |
172 | "RRM: Currently handling previous Neighbor Report."); | |
ec493469 AS |
173 | return -EBUSY; |
174 | } | |
175 | ||
176 | /* 3 = action category + action code + dialog token */ | |
177 | buf = wpabuf_alloc(3 + (ssid ? 2 + ssid->ssid_len : 0) + | |
178 | (lci ? 2 + MEASURE_REQUEST_LCI_LEN : 0) + | |
179 | (civic ? 2 + MEASURE_REQUEST_CIVIC_LEN : 0)); | |
180 | if (buf == NULL) { | |
bf3ab50f BG |
181 | wpa_dbg(wpa_s, MSG_DEBUG, |
182 | "RRM: Failed to allocate Neighbor Report Request"); | |
ec493469 AS |
183 | return -ENOMEM; |
184 | } | |
185 | ||
bf3ab50f BG |
186 | wpa_dbg(wpa_s, MSG_DEBUG, |
187 | "RRM: Neighbor report request (for %s), token=%d", | |
188 | (ssid ? wpa_ssid_txt(ssid->ssid, ssid->ssid_len) : ""), | |
189 | wpa_s->rrm.next_neighbor_rep_token); | |
ec493469 AS |
190 | |
191 | wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); | |
192 | wpabuf_put_u8(buf, WLAN_RRM_NEIGHBOR_REPORT_REQUEST); | |
193 | wpabuf_put_u8(buf, wpa_s->rrm.next_neighbor_rep_token); | |
194 | if (ssid) { | |
195 | wpabuf_put_u8(buf, WLAN_EID_SSID); | |
196 | wpabuf_put_u8(buf, ssid->ssid_len); | |
197 | wpabuf_put_data(buf, ssid->ssid, ssid->ssid_len); | |
198 | } | |
199 | ||
200 | if (lci) { | |
201 | /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */ | |
202 | wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST); | |
203 | wpabuf_put_u8(buf, MEASURE_REQUEST_LCI_LEN); | |
204 | ||
205 | /* | |
206 | * Measurement token; nonzero number that is unique among the | |
207 | * Measurement Request elements in a particular frame. | |
208 | */ | |
209 | wpabuf_put_u8(buf, 1); /* Measurement Token */ | |
210 | ||
211 | /* | |
212 | * Parallel, Enable, Request, and Report bits are 0, Duration is | |
213 | * reserved. | |
214 | */ | |
215 | wpabuf_put_u8(buf, 0); /* Measurement Request Mode */ | |
216 | wpabuf_put_u8(buf, MEASURE_TYPE_LCI); /* Measurement Type */ | |
217 | ||
218 | /* IEEE P802.11-REVmc/D5.0 9.4.2.21.10 - LCI request */ | |
219 | /* Location Subject */ | |
220 | wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE); | |
221 | ||
222 | /* Optional Subelements */ | |
223 | /* | |
224 | * IEEE P802.11-REVmc/D5.0 Figure 9-170 | |
225 | * The Maximum Age subelement is required, otherwise the AP can | |
226 | * send only data that was determined after receiving the | |
227 | * request. Setting it here to unlimited age. | |
228 | */ | |
229 | wpabuf_put_u8(buf, LCI_REQ_SUBELEM_MAX_AGE); | |
230 | wpabuf_put_u8(buf, 2); | |
231 | wpabuf_put_le16(buf, 0xffff); | |
232 | } | |
233 | ||
234 | if (civic) { | |
235 | /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */ | |
236 | wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST); | |
237 | wpabuf_put_u8(buf, MEASURE_REQUEST_CIVIC_LEN); | |
238 | ||
239 | /* | |
240 | * Measurement token; nonzero number that is unique among the | |
241 | * Measurement Request elements in a particular frame. | |
242 | */ | |
243 | wpabuf_put_u8(buf, 2); /* Measurement Token */ | |
244 | ||
245 | /* | |
246 | * Parallel, Enable, Request, and Report bits are 0, Duration is | |
247 | * reserved. | |
248 | */ | |
249 | wpabuf_put_u8(buf, 0); /* Measurement Request Mode */ | |
250 | /* Measurement Type */ | |
251 | wpabuf_put_u8(buf, MEASURE_TYPE_LOCATION_CIVIC); | |
252 | ||
253 | /* IEEE P802.11-REVmc/D5.0 9.4.2.21.14: | |
254 | * Location Civic request */ | |
255 | /* Location Subject */ | |
256 | wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE); | |
257 | wpabuf_put_u8(buf, 0); /* Civic Location Type: IETF RFC 4776 */ | |
258 | /* Location Service Interval Units: Seconds */ | |
259 | wpabuf_put_u8(buf, 0); | |
260 | /* Location Service Interval: 0 - Only one report is requested | |
261 | */ | |
262 | wpabuf_put_le16(buf, 0); | |
263 | /* No optional subelements */ | |
264 | } | |
265 | ||
266 | wpa_s->rrm.next_neighbor_rep_token++; | |
267 | ||
268 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
269 | wpa_s->own_addr, wpa_s->bssid, | |
270 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
bf3ab50f BG |
271 | wpa_dbg(wpa_s, MSG_DEBUG, |
272 | "RRM: Failed to send Neighbor Report Request"); | |
ec493469 AS |
273 | wpabuf_free(buf); |
274 | return -ECANCELED; | |
275 | } | |
276 | ||
277 | wpa_s->rrm.neighbor_rep_cb_ctx = cb_ctx; | |
278 | wpa_s->rrm.notify_neighbor_rep = cb; | |
279 | eloop_register_timeout(RRM_NEIGHBOR_REPORT_TIMEOUT, 0, | |
280 | wpas_rrm_neighbor_rep_timeout_handler, | |
281 | &wpa_s->rrm, NULL); | |
282 | ||
283 | wpabuf_free(buf); | |
284 | return 0; | |
285 | } | |
286 | ||
287 | ||
5cda3508 | 288 | static int wpas_rrm_report_elem(struct wpabuf **buf, u8 token, u8 mode, u8 type, |
e1b96e11 AS |
289 | const u8 *data, size_t data_len) |
290 | { | |
5cda3508 | 291 | if (wpabuf_resize(buf, 5 + data_len)) |
e1b96e11 AS |
292 | return -1; |
293 | ||
5cda3508 JM |
294 | wpabuf_put_u8(*buf, WLAN_EID_MEASURE_REPORT); |
295 | wpabuf_put_u8(*buf, 3 + data_len); | |
296 | wpabuf_put_u8(*buf, token); | |
297 | wpabuf_put_u8(*buf, mode); | |
298 | wpabuf_put_u8(*buf, type); | |
e1b96e11 AS |
299 | |
300 | if (data_len) | |
5cda3508 | 301 | wpabuf_put_data(*buf, data, data_len); |
e1b96e11 AS |
302 | |
303 | return 0; | |
304 | } | |
305 | ||
306 | ||
3c716fdb AS |
307 | static int |
308 | wpas_rrm_build_lci_report(struct wpa_supplicant *wpa_s, | |
309 | const struct rrm_measurement_request_element *req, | |
310 | struct wpabuf **buf) | |
ec493469 | 311 | { |
3c716fdb | 312 | u8 subject; |
ec493469 AS |
313 | u16 max_age = 0; |
314 | struct os_reltime t, diff; | |
315 | unsigned long diff_l; | |
ec493469 | 316 | const u8 *subelem; |
3c716fdb AS |
317 | const u8 *request = req->variable; |
318 | size_t len = req->len - 3; | |
319 | ||
7187e209 | 320 | if (len < 1) |
3c716fdb | 321 | return -1; |
ec493469 | 322 | |
3c716fdb AS |
323 | if (!wpa_s->lci) |
324 | goto reject; | |
ec493469 | 325 | |
ec493469 | 326 | subject = *request++; |
3c716fdb | 327 | len--; |
ec493469 | 328 | |
3c716fdb AS |
329 | wpa_printf(MSG_DEBUG, "Measurement request location subject=%u", |
330 | subject); | |
ec493469 | 331 | |
3c716fdb | 332 | if (subject != LOCATION_SUBJECT_REMOTE) { |
ec493469 | 333 | wpa_printf(MSG_INFO, |
3c716fdb AS |
334 | "Not building LCI report - bad location subject"); |
335 | return 0; | |
ec493469 AS |
336 | } |
337 | ||
338 | /* Subelements are formatted exactly like elements */ | |
7187e209 | 339 | wpa_hexdump(MSG_DEBUG, "LCI request subelements", request, len); |
ec493469 AS |
340 | subelem = get_ie(request, len, LCI_REQ_SUBELEM_MAX_AGE); |
341 | if (subelem && subelem[1] == 2) | |
342 | max_age = WPA_GET_LE16(subelem + 2); | |
343 | ||
344 | if (os_get_reltime(&t)) | |
3c716fdb | 345 | goto reject; |
ec493469 AS |
346 | |
347 | os_reltime_sub(&t, &wpa_s->lci_time, &diff); | |
348 | /* LCI age is calculated in 10th of a second units. */ | |
349 | diff_l = diff.sec * 10 + diff.usec / 100000; | |
350 | ||
351 | if (max_age != 0xffff && max_age < diff_l) | |
3c716fdb AS |
352 | goto reject; |
353 | ||
5cda3508 | 354 | if (wpas_rrm_report_elem(buf, req->token, |
3c716fdb AS |
355 | MEASUREMENT_REPORT_MODE_ACCEPT, req->type, |
356 | wpabuf_head_u8(wpa_s->lci), | |
357 | wpabuf_len(wpa_s->lci)) < 0) { | |
358 | wpa_printf(MSG_DEBUG, "Failed to add LCI report element"); | |
359 | return -1; | |
360 | } | |
361 | ||
362 | return 0; | |
ec493469 | 363 | |
3c716fdb | 364 | reject: |
b3c148e9 AS |
365 | if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) && |
366 | wpas_rrm_report_elem(buf, req->token, | |
3c716fdb AS |
367 | MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE, |
368 | req->type, NULL, 0) < 0) { | |
369 | wpa_printf(MSG_DEBUG, "RRM: Failed to add report element"); | |
370 | return -1; | |
371 | } | |
ec493469 | 372 | |
3c716fdb | 373 | return 0; |
ec493469 AS |
374 | } |
375 | ||
376 | ||
0c73e410 AS |
377 | static void wpas_rrm_send_msr_report_mpdu(struct wpa_supplicant *wpa_s, |
378 | const u8 *data, size_t len) | |
379 | { | |
380 | struct wpabuf *report = wpabuf_alloc(len + 3); | |
381 | ||
382 | if (!report) | |
383 | return; | |
384 | ||
385 | wpabuf_put_u8(report, WLAN_ACTION_RADIO_MEASUREMENT); | |
386 | wpabuf_put_u8(report, WLAN_RRM_RADIO_MEASUREMENT_REPORT); | |
387 | wpabuf_put_u8(report, wpa_s->rrm.token); | |
388 | ||
389 | wpabuf_put_data(report, data, len); | |
390 | ||
391 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
392 | wpa_s->own_addr, wpa_s->bssid, | |
393 | wpabuf_head(report), wpabuf_len(report), 0)) { | |
394 | wpa_printf(MSG_ERROR, | |
395 | "RRM: Radio measurement report failed: Sending Action frame failed"); | |
396 | } | |
397 | ||
398 | wpabuf_free(report); | |
399 | } | |
400 | ||
401 | ||
ecef0687 AS |
402 | static int wpas_rrm_beacon_rep_update_last_frame(u8 *pos, size_t len) |
403 | { | |
404 | struct rrm_measurement_report_element *msr_rep; | |
405 | u8 *end = pos + len; | |
406 | u8 *msr_rep_end; | |
56ac1f9d AS |
407 | struct rrm_measurement_beacon_report *rep = NULL; |
408 | u8 *subelem; | |
ecef0687 | 409 | |
56ac1f9d | 410 | /* Find the last beacon report element */ |
ecef0687 AS |
411 | while (end - pos >= (int) sizeof(*msr_rep)) { |
412 | msr_rep = (struct rrm_measurement_report_element *) pos; | |
413 | msr_rep_end = pos + msr_rep->len + 2; | |
414 | ||
415 | if (msr_rep->eid != WLAN_EID_MEASURE_REPORT || | |
416 | msr_rep_end > end) { | |
417 | /* Should not happen. This indicates a bug. */ | |
418 | wpa_printf(MSG_ERROR, | |
419 | "RRM: non-measurement report element in measurement report frame"); | |
420 | return -1; | |
421 | } | |
422 | ||
56ac1f9d | 423 | if (msr_rep->type == MEASURE_TYPE_BEACON) |
ecef0687 AS |
424 | rep = (struct rrm_measurement_beacon_report *) |
425 | msr_rep->variable; | |
ecef0687 AS |
426 | |
427 | pos += pos[1] + 2; | |
428 | } | |
429 | ||
56ac1f9d AS |
430 | if (!rep) |
431 | return 0; | |
432 | ||
433 | subelem = rep->variable; | |
434 | while (subelem + 2 < msr_rep_end && | |
435 | subelem[0] != WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION) | |
436 | subelem += 2 + subelem[1]; | |
437 | ||
438 | if (subelem + 2 < msr_rep_end && | |
439 | subelem[0] == WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION && | |
440 | subelem[1] == 1 && | |
441 | subelem + BEACON_REPORT_LAST_INDICATION_SUBELEM_LEN <= end) | |
442 | subelem[2] = 1; | |
443 | ||
ecef0687 AS |
444 | return 0; |
445 | } | |
446 | ||
447 | ||
0c73e410 AS |
448 | static void wpas_rrm_send_msr_report(struct wpa_supplicant *wpa_s, |
449 | struct wpabuf *buf) | |
450 | { | |
451 | int len = wpabuf_len(buf); | |
ecef0687 | 452 | u8 *pos = wpabuf_mhead_u8(buf), *next = pos; |
0c73e410 AS |
453 | |
454 | #define MPDU_REPORT_LEN (int) (IEEE80211_MAX_MMPDU_SIZE - IEEE80211_HDRLEN - 3) | |
455 | ||
456 | while (len) { | |
457 | int send_len = (len > MPDU_REPORT_LEN) ? next - pos : len; | |
458 | ||
ecef0687 AS |
459 | if (send_len == len) |
460 | wpas_rrm_beacon_rep_update_last_frame(pos, len); | |
461 | ||
0c73e410 AS |
462 | if (send_len == len || |
463 | (send_len + next[1] + 2) > MPDU_REPORT_LEN) { | |
464 | wpas_rrm_send_msr_report_mpdu(wpa_s, pos, send_len); | |
465 | len -= send_len; | |
466 | pos = next; | |
467 | } | |
468 | ||
b696f791 JM |
469 | if (len) |
470 | next += next[1] + 2; | |
0c73e410 AS |
471 | } |
472 | #undef MPDU_REPORT_LEN | |
473 | } | |
474 | ||
475 | ||
76196ddb AS |
476 | static int wpas_add_channel(u8 op_class, u8 chan, u8 num_primary_channels, |
477 | int *freqs) | |
478 | { | |
479 | size_t i; | |
480 | ||
481 | for (i = 0; i < num_primary_channels; i++) { | |
482 | u8 primary_chan = chan - (2 * num_primary_channels - 2) + i * 4; | |
483 | ||
484 | freqs[i] = ieee80211_chan_to_freq(NULL, op_class, primary_chan); | |
40e9a3f3 JM |
485 | /* ieee80211_chan_to_freq() is not really meant for this |
486 | * conversion of 20 MHz primary channel numbers for wider VHT | |
487 | * channels, so handle those as special cases here for now. */ | |
488 | if (freqs[i] < 0 && | |
489 | (op_class == 128 || op_class == 129 || op_class == 130)) | |
490 | freqs[i] = 5000 + 5 * primary_chan; | |
76196ddb AS |
491 | if (freqs[i] < 0) { |
492 | wpa_printf(MSG_DEBUG, | |
493 | "Beacon Report: Invalid channel %u", | |
494 | chan); | |
495 | return -1; | |
496 | } | |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | ||
503 | static int * wpas_add_channels(const struct oper_class_map *op, | |
504 | struct hostapd_hw_modes *mode, int active, | |
505 | const u8 *channels, const u8 size) | |
506 | { | |
507 | int *freqs, *next_freq; | |
508 | u8 num_primary_channels, i; | |
509 | u8 num_chans; | |
510 | ||
511 | num_chans = channels ? size : | |
512 | (op->max_chan - op->min_chan) / op->inc + 1; | |
513 | ||
514 | if (op->bw == BW80 || op->bw == BW80P80) | |
515 | num_primary_channels = 4; | |
516 | else if (op->bw == BW160) | |
517 | num_primary_channels = 8; | |
518 | else | |
519 | num_primary_channels = 1; | |
520 | ||
521 | /* one extra place for the zero-terminator */ | |
522 | freqs = os_calloc(num_chans * num_primary_channels + 1, sizeof(*freqs)); | |
523 | if (!freqs) { | |
524 | wpa_printf(MSG_ERROR, | |
525 | "Beacon Report: Failed to allocate freqs array"); | |
526 | return NULL; | |
527 | } | |
528 | ||
529 | next_freq = freqs; | |
530 | for (i = 0; i < num_chans; i++) { | |
531 | u8 chan = channels ? channels[i] : op->min_chan + i * op->inc; | |
89450024 JM |
532 | enum chan_allowed res = verify_channel(mode, op->op_class, chan, |
533 | op->bw); | |
76196ddb AS |
534 | |
535 | if (res == NOT_ALLOWED || (res == NO_IR && active)) | |
536 | continue; | |
537 | ||
538 | if (wpas_add_channel(op->op_class, chan, num_primary_channels, | |
539 | next_freq) < 0) { | |
540 | os_free(freqs); | |
541 | return NULL; | |
542 | } | |
543 | ||
544 | next_freq += num_primary_channels; | |
545 | } | |
546 | ||
547 | if (!freqs[0]) { | |
548 | os_free(freqs); | |
549 | return NULL; | |
550 | } | |
551 | ||
552 | return freqs; | |
553 | } | |
554 | ||
555 | ||
556 | static int * wpas_op_class_freqs(const struct oper_class_map *op, | |
557 | struct hostapd_hw_modes *mode, int active) | |
558 | { | |
559 | u8 channels_80mhz[] = { 42, 58, 106, 122, 138, 155 }; | |
560 | u8 channels_160mhz[] = { 50, 114 }; | |
561 | ||
562 | /* | |
563 | * When adding all channels in the operating class, 80 + 80 MHz | |
564 | * operating classes are like 80 MHz channels because we add all valid | |
565 | * channels anyway. | |
566 | */ | |
567 | if (op->bw == BW80 || op->bw == BW80P80) | |
568 | return wpas_add_channels(op, mode, active, channels_80mhz, | |
569 | ARRAY_SIZE(channels_80mhz)); | |
570 | ||
571 | if (op->bw == BW160) | |
572 | return wpas_add_channels(op, mode, active, channels_160mhz, | |
573 | ARRAY_SIZE(channels_160mhz)); | |
574 | ||
575 | return wpas_add_channels(op, mode, active, NULL, 0); | |
576 | } | |
577 | ||
578 | ||
579 | static int * wpas_channel_report_freqs(struct wpa_supplicant *wpa_s, int active, | |
580 | const char *country, const u8 *subelems, | |
581 | size_t len) | |
582 | { | |
583 | int *freqs = NULL, *new_freqs; | |
584 | const u8 *end = subelems + len; | |
585 | ||
586 | while (end - subelems > 2) { | |
587 | const struct oper_class_map *op; | |
588 | const u8 *ap_chan_elem, *pos; | |
589 | u8 left; | |
590 | struct hostapd_hw_modes *mode; | |
591 | ||
592 | ap_chan_elem = get_ie(subelems, end - subelems, | |
593 | WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL); | |
594 | if (!ap_chan_elem) | |
595 | break; | |
596 | pos = ap_chan_elem + 2; | |
597 | left = ap_chan_elem[1]; | |
598 | if (left < 1) | |
599 | break; | |
600 | subelems = ap_chan_elem + 2 + left; | |
601 | ||
602 | op = get_oper_class(country, *pos); | |
603 | if (!op) { | |
604 | wpa_printf(MSG_DEBUG, | |
605 | "Beacon request: unknown operating class in AP Channel Report subelement %u", | |
606 | *pos); | |
607 | goto out; | |
608 | } | |
609 | pos++; | |
610 | left--; | |
611 | ||
612 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode); | |
613 | if (!mode) | |
614 | continue; | |
615 | ||
616 | /* | |
617 | * For 80 + 80 MHz operating classes, this AP Channel Report | |
618 | * element should be followed by another element specifying | |
619 | * the second 80 MHz channel. For now just add this 80 MHz | |
620 | * channel, the second 80 MHz channel will be added when the | |
621 | * next element is parsed. | |
622 | * TODO: Verify that this AP Channel Report element is followed | |
623 | * by a corresponding AP Channel Report element as specified in | |
624 | * IEEE Std 802.11-2016, 11.11.9.1. | |
625 | */ | |
626 | new_freqs = wpas_add_channels(op, mode, active, pos, left); | |
627 | if (new_freqs) | |
628 | int_array_concat(&freqs, new_freqs); | |
629 | ||
630 | os_free(new_freqs); | |
631 | } | |
632 | ||
633 | return freqs; | |
634 | out: | |
635 | os_free(freqs); | |
636 | return NULL; | |
637 | } | |
638 | ||
639 | ||
640 | static int * wpas_beacon_request_freqs(struct wpa_supplicant *wpa_s, | |
641 | u8 op_class, u8 chan, int active, | |
642 | const u8 *subelems, size_t len) | |
643 | { | |
644 | int *freqs = NULL, *ext_freqs = NULL; | |
645 | struct hostapd_hw_modes *mode; | |
646 | const char *country = NULL; | |
647 | const struct oper_class_map *op; | |
648 | const u8 *elem; | |
649 | ||
650 | if (!wpa_s->current_bss) | |
651 | return NULL; | |
652 | elem = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
653 | if (elem && elem[1] >= 2) | |
654 | country = (const char *) (elem + 2); | |
655 | ||
656 | op = get_oper_class(country, op_class); | |
657 | if (!op) { | |
658 | wpa_printf(MSG_DEBUG, | |
659 | "Beacon request: invalid operating class %d", | |
660 | op_class); | |
661 | return NULL; | |
662 | } | |
663 | ||
664 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op->mode); | |
665 | if (!mode) | |
666 | return NULL; | |
667 | ||
668 | switch (chan) { | |
669 | case 0: | |
670 | freqs = wpas_op_class_freqs(op, mode, active); | |
671 | if (!freqs) | |
672 | return NULL; | |
673 | break; | |
674 | case 255: | |
675 | /* freqs will be added from AP channel subelements */ | |
676 | break; | |
677 | default: | |
678 | freqs = wpas_add_channels(op, mode, active, &chan, 1); | |
679 | if (!freqs) | |
680 | return NULL; | |
681 | break; | |
682 | } | |
683 | ||
684 | ext_freqs = wpas_channel_report_freqs(wpa_s, active, country, subelems, | |
685 | len); | |
686 | if (ext_freqs) { | |
687 | int_array_concat(&freqs, ext_freqs); | |
688 | os_free(ext_freqs); | |
922dcf1b | 689 | int_array_sort_unique(freqs); |
76196ddb AS |
690 | } |
691 | ||
692 | return freqs; | |
693 | } | |
694 | ||
695 | ||
30eddf35 JB |
696 | static int wpas_get_op_chan_phy(int freq, const u8 *ies, size_t ies_len, |
697 | u8 *op_class, u8 *chan, u8 *phy_type) | |
76196ddb AS |
698 | { |
699 | const u8 *ie; | |
700 | int sec_chan = 0, vht = 0; | |
701 | struct ieee80211_ht_operation *ht_oper = NULL; | |
702 | struct ieee80211_vht_operation *vht_oper = NULL; | |
703 | u8 seg0, seg1; | |
704 | ||
705 | ie = get_ie(ies, ies_len, WLAN_EID_HT_OPERATION); | |
706 | if (ie && ie[1] >= sizeof(struct ieee80211_ht_operation)) { | |
707 | u8 sec_chan_offset; | |
708 | ||
709 | ht_oper = (struct ieee80211_ht_operation *) (ie + 2); | |
710 | sec_chan_offset = ht_oper->ht_param & | |
711 | HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK; | |
712 | if (sec_chan_offset == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE) | |
713 | sec_chan = 1; | |
714 | else if (sec_chan_offset == | |
715 | HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW) | |
716 | sec_chan = -1; | |
717 | } | |
718 | ||
719 | ie = get_ie(ies, ies_len, WLAN_EID_VHT_OPERATION); | |
720 | if (ie && ie[1] >= sizeof(struct ieee80211_vht_operation)) { | |
721 | vht_oper = (struct ieee80211_vht_operation *) (ie + 2); | |
722 | ||
723 | switch (vht_oper->vht_op_info_chwidth) { | |
724 | case 1: | |
725 | seg0 = vht_oper->vht_op_info_chan_center_freq_seg0_idx; | |
726 | seg1 = vht_oper->vht_op_info_chan_center_freq_seg1_idx; | |
727 | if (seg1 && abs(seg1 - seg0) == 8) | |
464dcfd0 | 728 | vht = CHANWIDTH_160MHZ; |
76196ddb | 729 | else if (seg1) |
464dcfd0 | 730 | vht = CHANWIDTH_80P80MHZ; |
76196ddb | 731 | else |
464dcfd0 | 732 | vht = CHANWIDTH_80MHZ; |
76196ddb AS |
733 | break; |
734 | case 2: | |
464dcfd0 | 735 | vht = CHANWIDTH_160MHZ; |
76196ddb AS |
736 | break; |
737 | case 3: | |
464dcfd0 | 738 | vht = CHANWIDTH_80P80MHZ; |
76196ddb AS |
739 | break; |
740 | default: | |
464dcfd0 | 741 | vht = CHANWIDTH_USE_HT; |
76196ddb AS |
742 | break; |
743 | } | |
744 | } | |
745 | ||
746 | if (ieee80211_freq_to_channel_ext(freq, sec_chan, vht, op_class, | |
747 | chan) == NUM_HOSTAPD_MODES) { | |
748 | wpa_printf(MSG_DEBUG, | |
749 | "Cannot determine operating class and channel"); | |
750 | return -1; | |
751 | } | |
752 | ||
753 | *phy_type = ieee80211_get_phy_type(freq, ht_oper != NULL, | |
754 | vht_oper != NULL); | |
755 | if (*phy_type == PHY_TYPE_UNSPECIFIED) { | |
756 | wpa_printf(MSG_DEBUG, "Cannot determine phy type"); | |
757 | return -1; | |
758 | } | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | ||
764 | static int wpas_beacon_rep_add_frame_body(struct bitfield *eids, | |
765 | enum beacon_report_detail detail, | |
766 | struct wpa_bss *bss, u8 *buf, | |
3ec11878 AS |
767 | size_t buf_len, u8 **ies_buf, |
768 | size_t *ie_len, int add_fixed) | |
76196ddb | 769 | { |
3ec11878 AS |
770 | u8 *ies = *ies_buf; |
771 | size_t ies_len = *ie_len; | |
76196ddb AS |
772 | u8 *pos = buf; |
773 | int rem_len; | |
774 | ||
775 | rem_len = 255 - sizeof(struct rrm_measurement_beacon_report) - | |
3ec11878 AS |
776 | sizeof(struct rrm_measurement_report_element) - 2 - |
777 | REPORTED_FRAME_BODY_SUBELEM_LEN; | |
76196ddb AS |
778 | |
779 | if (detail > BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) { | |
780 | wpa_printf(MSG_DEBUG, | |
781 | "Beacon Request: Invalid reporting detail: %d", | |
782 | detail); | |
783 | return -1; | |
784 | } | |
785 | ||
786 | if (detail == BEACON_REPORT_DETAIL_NONE) | |
787 | return 0; | |
788 | ||
789 | /* | |
790 | * Minimal frame body subelement size: EID(1) + length(1) + TSF(8) + | |
791 | * beacon interval(2) + capabilities(2) = 14 bytes | |
792 | */ | |
3ec11878 AS |
793 | if (add_fixed && buf_len < 14) |
794 | return -1; | |
76196ddb AS |
795 | |
796 | *pos++ = WLAN_BEACON_REPORT_SUBELEM_FRAME_BODY; | |
797 | /* The length will be filled later */ | |
798 | pos++; | |
3ec11878 AS |
799 | |
800 | if (add_fixed) { | |
801 | WPA_PUT_LE64(pos, bss->tsf); | |
802 | pos += sizeof(bss->tsf); | |
803 | WPA_PUT_LE16(pos, bss->beacon_int); | |
804 | pos += 2; | |
805 | WPA_PUT_LE16(pos, bss->caps); | |
806 | pos += 2; | |
807 | } | |
76196ddb AS |
808 | |
809 | rem_len -= pos - buf; | |
810 | ||
811 | /* | |
812 | * According to IEEE Std 802.11-2016, 9.4.2.22.7, if the reported frame | |
813 | * body subelement causes the element to exceed the maximum element | |
814 | * size, the subelement is truncated so that the last IE is a complete | |
815 | * IE. So even when required to report all IEs, add elements one after | |
816 | * the other and stop once there is no more room in the measurement | |
817 | * element. | |
818 | */ | |
819 | while (ies_len > 2 && 2U + ies[1] <= ies_len && rem_len > 0) { | |
820 | if (detail == BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS || | |
821 | (eids && bitfield_is_set(eids, ies[0]))) { | |
3ec11878 | 822 | u8 elen = ies[1]; |
76196ddb AS |
823 | |
824 | if (2 + elen > buf + buf_len - pos || | |
825 | 2 + elen > rem_len) | |
826 | break; | |
827 | ||
828 | *pos++ = ies[0]; | |
829 | *pos++ = elen; | |
830 | os_memcpy(pos, ies + 2, elen); | |
831 | pos += elen; | |
832 | rem_len -= 2 + elen; | |
833 | } | |
834 | ||
835 | ies_len -= 2 + ies[1]; | |
836 | ies += 2 + ies[1]; | |
837 | } | |
838 | ||
3ec11878 AS |
839 | *ie_len = ies_len; |
840 | *ies_buf = ies; | |
841 | ||
76196ddb AS |
842 | /* Now the length is known */ |
843 | buf[1] = pos - buf - 2; | |
844 | return pos - buf; | |
845 | } | |
846 | ||
847 | ||
3ec11878 AS |
848 | static int wpas_add_beacon_rep_elem(struct beacon_rep_data *data, |
849 | struct wpa_bss *bss, | |
850 | struct wpabuf **wpa_buf, | |
851 | struct rrm_measurement_beacon_report *rep, | |
852 | u8 **ie, size_t *ie_len, u8 idx) | |
853 | { | |
854 | int ret; | |
855 | u8 *buf, *pos; | |
ecef0687 AS |
856 | u32 subelems_len = REPORTED_FRAME_BODY_SUBELEM_LEN + |
857 | (data->last_indication ? | |
858 | BEACON_REPORT_LAST_INDICATION_SUBELEM_LEN : 0); | |
3ec11878 AS |
859 | |
860 | /* Maximum element length: Beacon Report element + Reported Frame Body | |
861 | * subelement + all IEs of the reported Beacon frame + Reported Frame | |
862 | * Body Fragment ID subelement */ | |
ecef0687 | 863 | buf = os_malloc(sizeof(*rep) + 14 + *ie_len + subelems_len); |
3ec11878 AS |
864 | if (!buf) |
865 | return -1; | |
866 | ||
867 | os_memcpy(buf, rep, sizeof(*rep)); | |
868 | ||
869 | ret = wpas_beacon_rep_add_frame_body(data->eids, data->report_detail, | |
870 | bss, buf + sizeof(*rep), | |
871 | 14 + *ie_len, ie, ie_len, | |
872 | idx == 0); | |
873 | if (ret < 0) | |
874 | goto out; | |
875 | ||
876 | pos = buf + ret + sizeof(*rep); | |
877 | pos[0] = WLAN_BEACON_REPORT_SUBELEM_FRAME_BODY_FRAGMENT_ID; | |
878 | pos[1] = 2; | |
879 | ||
880 | /* | |
881 | * Only one Beacon Report Measurement is supported at a time, so | |
882 | * the Beacon Report ID can always be set to 1. | |
883 | */ | |
884 | pos[2] = 1; | |
885 | ||
886 | /* Fragment ID Number (bits 0..6) and More Frame Body Fragments (bit 7) | |
887 | */ | |
888 | pos[3] = idx; | |
889 | if (data->report_detail != BEACON_REPORT_DETAIL_NONE && *ie_len) | |
890 | pos[3] |= REPORTED_FRAME_BODY_MORE_FRAGMENTS; | |
891 | else | |
892 | pos[3] &= ~REPORTED_FRAME_BODY_MORE_FRAGMENTS; | |
893 | ||
ecef0687 AS |
894 | pos += REPORTED_FRAME_BODY_SUBELEM_LEN; |
895 | ||
896 | if (data->last_indication) { | |
897 | pos[0] = WLAN_BEACON_REPORT_SUBELEM_LAST_INDICATION; | |
898 | pos[1] = 1; | |
899 | ||
900 | /* This field will be updated later if this is the last frame */ | |
901 | pos[2] = 0; | |
902 | } | |
903 | ||
3ec11878 AS |
904 | ret = wpas_rrm_report_elem(wpa_buf, data->token, |
905 | MEASUREMENT_REPORT_MODE_ACCEPT, | |
906 | MEASURE_TYPE_BEACON, buf, | |
ecef0687 | 907 | ret + sizeof(*rep) + subelems_len); |
3ec11878 AS |
908 | out: |
909 | os_free(buf); | |
910 | return ret; | |
911 | } | |
912 | ||
913 | ||
76196ddb AS |
914 | static int wpas_add_beacon_rep(struct wpa_supplicant *wpa_s, |
915 | struct wpabuf **wpa_buf, struct wpa_bss *bss, | |
916 | u64 start, u64 parent_tsf) | |
917 | { | |
918 | struct beacon_rep_data *data = &wpa_s->beacon_rep_data; | |
3ec11878 AS |
919 | u8 *ies = (u8 *) (bss + 1); |
920 | u8 *pos = ies; | |
921 | size_t ies_len = bss->ie_len ? bss->ie_len : bss->beacon_ie_len; | |
922 | struct rrm_measurement_beacon_report rep; | |
923 | u8 idx = 0; | |
76196ddb AS |
924 | |
925 | if (os_memcmp(data->bssid, broadcast_ether_addr, ETH_ALEN) != 0 && | |
926 | os_memcmp(data->bssid, bss->bssid, ETH_ALEN) != 0) | |
927 | return 0; | |
928 | ||
929 | if (data->ssid_len && | |
930 | (data->ssid_len != bss->ssid_len || | |
931 | os_memcmp(data->ssid, bss->ssid, bss->ssid_len) != 0)) | |
932 | return 0; | |
933 | ||
3ec11878 AS |
934 | if (wpas_get_op_chan_phy(bss->freq, ies, ies_len, &rep.op_class, |
935 | &rep.channel, &rep.report_info) < 0) | |
936 | return 0; | |
891aa65b | 937 | |
3ec11878 AS |
938 | rep.start_time = host_to_le64(start); |
939 | rep.duration = host_to_le16(data->scan_params.duration); | |
940 | rep.rcpi = rssi_to_rcpi(bss->level); | |
941 | rep.rsni = 255; /* 255 indicates that RSNI is not available */ | |
942 | os_memcpy(rep.bssid, bss->bssid, ETH_ALEN); | |
943 | rep.antenna_id = 0; /* unknown */ | |
944 | rep.parent_tsf = host_to_le32(parent_tsf); | |
76196ddb | 945 | |
3ec11878 AS |
946 | do { |
947 | int ret; | |
76196ddb | 948 | |
3ec11878 AS |
949 | ret = wpas_add_beacon_rep_elem(data, bss, wpa_buf, &rep, |
950 | &pos, &ies_len, idx++); | |
951 | if (ret) | |
952 | return ret; | |
953 | } while (data->report_detail != BEACON_REPORT_DETAIL_NONE && | |
954 | ies_len >= 2); | |
76196ddb | 955 | |
3ec11878 | 956 | return 0; |
76196ddb AS |
957 | } |
958 | ||
959 | ||
960 | static int wpas_beacon_rep_no_results(struct wpa_supplicant *wpa_s, | |
961 | struct wpabuf **buf) | |
962 | { | |
5cda3508 | 963 | return wpas_rrm_report_elem(buf, wpa_s->beacon_rep_data.token, |
76196ddb AS |
964 | MEASUREMENT_REPORT_MODE_ACCEPT, |
965 | MEASURE_TYPE_BEACON, NULL, 0); | |
966 | } | |
967 | ||
968 | ||
969 | static void wpas_beacon_rep_table(struct wpa_supplicant *wpa_s, | |
970 | struct wpabuf **buf) | |
971 | { | |
972 | size_t i; | |
973 | ||
974 | for (i = 0; i < wpa_s->last_scan_res_used; i++) { | |
975 | if (wpas_add_beacon_rep(wpa_s, buf, wpa_s->last_scan_res[i], | |
976 | 0, 0) < 0) | |
977 | break; | |
978 | } | |
979 | ||
980 | if (!(*buf)) | |
981 | wpas_beacon_rep_no_results(wpa_s, buf); | |
982 | ||
983 | wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", *buf); | |
984 | } | |
985 | ||
986 | ||
3756acfd | 987 | void wpas_rrm_refuse_request(struct wpa_supplicant *wpa_s) |
76196ddb | 988 | { |
b3c148e9 AS |
989 | if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr)) { |
990 | struct wpabuf *buf = NULL; | |
991 | ||
992 | if (wpas_rrm_report_elem(&buf, wpa_s->beacon_rep_data.token, | |
993 | MEASUREMENT_REPORT_MODE_REJECT_REFUSED, | |
994 | MEASURE_TYPE_BEACON, NULL, 0)) { | |
995 | wpa_printf(MSG_ERROR, "RRM: Memory allocation failed"); | |
996 | wpabuf_free(buf); | |
997 | return; | |
998 | } | |
76196ddb | 999 | |
b3c148e9 | 1000 | wpas_rrm_send_msr_report(wpa_s, buf); |
76196ddb | 1001 | wpabuf_free(buf); |
76196ddb AS |
1002 | } |
1003 | ||
76196ddb | 1004 | wpas_clear_beacon_rep_data(wpa_s); |
76196ddb AS |
1005 | } |
1006 | ||
1007 | ||
1008 | static void wpas_rrm_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
1009 | { | |
1010 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1011 | struct wpa_driver_scan_params *params = | |
1012 | &wpa_s->beacon_rep_data.scan_params; | |
d7342014 | 1013 | u16 prev_duration = params->duration; |
76196ddb AS |
1014 | |
1015 | if (!wpa_s->current_bss) | |
1016 | return; | |
1017 | ||
d7342014 JM |
1018 | if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL) && |
1019 | params->duration) { | |
1020 | wpa_printf(MSG_DEBUG, | |
1021 | "RRM: Cannot set scan duration due to missing driver support"); | |
1022 | params->duration = 0; | |
1023 | } | |
1024 | os_get_reltime(&wpa_s->beacon_rep_scan); | |
76196ddb AS |
1025 | if (wpa_s->scanning || wpas_p2p_in_progress(wpa_s) || |
1026 | wpa_supplicant_trigger_scan(wpa_s, params)) | |
1027 | wpas_rrm_refuse_request(wpa_s); | |
d7342014 | 1028 | params->duration = prev_duration; |
76196ddb AS |
1029 | } |
1030 | ||
1031 | ||
1032 | static int wpas_rm_handle_beacon_req_subelem(struct wpa_supplicant *wpa_s, | |
1033 | struct beacon_rep_data *data, | |
1034 | u8 sid, u8 slen, const u8 *subelem) | |
1035 | { | |
1036 | u8 report_info, i; | |
1037 | ||
1038 | switch (sid) { | |
1039 | case WLAN_BEACON_REQUEST_SUBELEM_SSID: | |
1040 | if (!slen) { | |
1041 | wpa_printf(MSG_DEBUG, | |
1042 | "SSID subelement with zero length - wildcard SSID"); | |
1043 | break; | |
1044 | } | |
1045 | ||
1046 | if (slen > SSID_MAX_LEN) { | |
1047 | wpa_printf(MSG_DEBUG, | |
1048 | "Invalid SSID subelement length: %u", slen); | |
1049 | return -1; | |
1050 | } | |
1051 | ||
1052 | data->ssid_len = slen; | |
1053 | os_memcpy(data->ssid, subelem, data->ssid_len); | |
1054 | break; | |
1055 | case WLAN_BEACON_REQUEST_SUBELEM_INFO: | |
1056 | if (slen != 2) { | |
1057 | wpa_printf(MSG_DEBUG, | |
1058 | "Invalid reporting information subelement length: %u", | |
1059 | slen); | |
1060 | return -1; | |
1061 | } | |
1062 | ||
1063 | report_info = subelem[0]; | |
1064 | if (report_info != 0) { | |
1065 | wpa_printf(MSG_DEBUG, | |
1066 | "reporting information=%u is not supported", | |
1067 | report_info); | |
1068 | return 0; | |
1069 | } | |
1070 | break; | |
1071 | case WLAN_BEACON_REQUEST_SUBELEM_DETAIL: | |
1072 | if (slen != 1) { | |
1073 | wpa_printf(MSG_DEBUG, | |
1074 | "Invalid reporting detail subelement length: %u", | |
1075 | slen); | |
1076 | return -1; | |
1077 | } | |
1078 | ||
1079 | data->report_detail = subelem[0]; | |
1080 | if (data->report_detail > | |
1081 | BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS) { | |
1082 | wpa_printf(MSG_DEBUG, "Invalid reporting detail: %u", | |
1083 | subelem[0]); | |
705e2909 | 1084 | return -1; |
76196ddb AS |
1085 | } |
1086 | ||
1087 | break; | |
1088 | case WLAN_BEACON_REQUEST_SUBELEM_REQUEST: | |
1089 | if (data->report_detail != | |
1090 | BEACON_REPORT_DETAIL_REQUESTED_ONLY) { | |
1091 | wpa_printf(MSG_DEBUG, | |
1092 | "Beacon request: request subelement is present but report detail is %u", | |
1093 | data->report_detail); | |
1094 | return -1; | |
1095 | } | |
1096 | ||
1097 | if (!slen) { | |
1098 | wpa_printf(MSG_DEBUG, | |
1099 | "Invalid request subelement length: %u", | |
1100 | slen); | |
1101 | return -1; | |
1102 | } | |
1103 | ||
1104 | if (data->eids) { | |
1105 | wpa_printf(MSG_DEBUG, | |
1106 | "Beacon Request: Request subelement appears more than once"); | |
1107 | return -1; | |
1108 | } | |
1109 | ||
1110 | data->eids = bitfield_alloc(255); | |
1111 | if (!data->eids) { | |
1112 | wpa_printf(MSG_DEBUG, "Failed to allocate EIDs bitmap"); | |
1113 | return -1; | |
1114 | } | |
1115 | ||
1116 | for (i = 0; i < slen; i++) | |
1117 | bitfield_set(data->eids, subelem[i]); | |
1118 | break; | |
1119 | case WLAN_BEACON_REQUEST_SUBELEM_AP_CHANNEL: | |
1120 | /* Skip - it will be processed when freqs are added */ | |
1121 | break; | |
ecef0687 AS |
1122 | case WLAN_BEACON_REQUEST_SUBELEM_LAST_INDICATION: |
1123 | if (slen != 1) { | |
1124 | wpa_printf(MSG_DEBUG, | |
1125 | "Beacon request: Invalid last indication request subelement length: %u", | |
1126 | slen); | |
1127 | return -1; | |
1128 | } | |
1129 | ||
1130 | data->last_indication = subelem[0]; | |
1131 | break; | |
76196ddb AS |
1132 | default: |
1133 | wpa_printf(MSG_DEBUG, | |
1134 | "Beacon request: Unknown subelement id %u", sid); | |
1135 | break; | |
1136 | } | |
1137 | ||
1138 | return 1; | |
1139 | } | |
1140 | ||
1141 | ||
1142 | /** | |
1143 | * Returns 0 if the next element can be processed, 1 if some operation was | |
1144 | * triggered, and -1 if processing failed (i.e., the element is in invalid | |
1145 | * format or an internal error occurred). | |
1146 | */ | |
1147 | static int | |
1148 | wpas_rm_handle_beacon_req(struct wpa_supplicant *wpa_s, | |
1149 | u8 elem_token, int duration_mandatory, | |
1150 | const struct rrm_measurement_beacon_request *req, | |
1151 | size_t len, struct wpabuf **buf) | |
1152 | { | |
1153 | struct beacon_rep_data *data = &wpa_s->beacon_rep_data; | |
1154 | struct wpa_driver_scan_params *params = &data->scan_params; | |
1155 | const u8 *subelems; | |
1156 | size_t elems_len; | |
1157 | u16 rand_interval; | |
1158 | u32 interval_usec; | |
1159 | u32 _rand; | |
1160 | int ret = 0, res; | |
705e2909 | 1161 | u8 reject_mode; |
76196ddb | 1162 | |
76196ddb AS |
1163 | if (len < sizeof(*req)) |
1164 | return -1; | |
de6ec8b5 | 1165 | |
d7342014 JM |
1166 | if (req->mode != BEACON_REPORT_MODE_PASSIVE && |
1167 | req->mode != BEACON_REPORT_MODE_ACTIVE && | |
1168 | req->mode != BEACON_REPORT_MODE_TABLE) | |
de6ec8b5 JM |
1169 | return 0; |
1170 | ||
76196ddb AS |
1171 | subelems = req->variable; |
1172 | elems_len = len - sizeof(*req); | |
1173 | rand_interval = le_to_host16(req->rand_interval); | |
1174 | ||
4d70b2a4 | 1175 | os_free(params->freqs); |
76196ddb AS |
1176 | os_memset(params, 0, sizeof(*params)); |
1177 | ||
1178 | data->token = elem_token; | |
1179 | ||
1180 | /* default reporting detail is all fixed length fields and all | |
1181 | * elements */ | |
1182 | data->report_detail = BEACON_REPORT_DETAIL_ALL_FIELDS_AND_ELEMENTS; | |
1183 | os_memcpy(data->bssid, req->bssid, ETH_ALEN); | |
1184 | ||
1185 | while (elems_len >= 2) { | |
1186 | if (subelems[1] > elems_len - 2) { | |
1187 | wpa_printf(MSG_DEBUG, | |
1188 | "Beacon Request: Truncated subelement"); | |
1189 | ret = -1; | |
1190 | goto out; | |
1191 | } | |
1192 | ||
1193 | res = wpas_rm_handle_beacon_req_subelem( | |
1194 | wpa_s, data, subelems[0], subelems[1], &subelems[2]); | |
705e2909 | 1195 | if (res < 0) { |
76196ddb AS |
1196 | ret = res; |
1197 | goto out; | |
705e2909 AS |
1198 | } else if (!res) { |
1199 | reject_mode = MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE; | |
1200 | goto out_reject; | |
76196ddb AS |
1201 | } |
1202 | ||
1203 | elems_len -= 2 + subelems[1]; | |
1204 | subelems += 2 + subelems[1]; | |
1205 | } | |
1206 | ||
1207 | if (req->mode == BEACON_REPORT_MODE_TABLE) { | |
1208 | wpas_beacon_rep_table(wpa_s, buf); | |
1209 | goto out; | |
1210 | } | |
1211 | ||
1212 | params->freqs = wpas_beacon_request_freqs( | |
1213 | wpa_s, req->oper_class, req->channel, | |
1214 | req->mode == BEACON_REPORT_MODE_ACTIVE, | |
1215 | req->variable, len - sizeof(*req)); | |
1216 | if (!params->freqs) { | |
1217 | wpa_printf(MSG_DEBUG, "Beacon request: No valid channels"); | |
705e2909 AS |
1218 | reject_mode = MEASUREMENT_REPORT_MODE_REJECT_REFUSED; |
1219 | goto out_reject; | |
76196ddb AS |
1220 | } |
1221 | ||
1222 | params->duration = le_to_host16(req->duration); | |
1223 | params->duration_mandatory = duration_mandatory; | |
1224 | if (!params->duration) { | |
1225 | wpa_printf(MSG_DEBUG, "Beacon request: Duration is 0"); | |
1226 | ret = -1; | |
1227 | goto out; | |
1228 | } | |
1229 | ||
1230 | params->only_new_results = 1; | |
1231 | ||
1232 | if (req->mode == BEACON_REPORT_MODE_ACTIVE) { | |
1233 | params->ssids[params->num_ssids].ssid = data->ssid; | |
1234 | params->ssids[params->num_ssids++].ssid_len = data->ssid_len; | |
1235 | } | |
1236 | ||
1237 | if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0) | |
1238 | _rand = os_random(); | |
1239 | interval_usec = (_rand % (rand_interval + 1)) * 1024; | |
1240 | eloop_register_timeout(0, interval_usec, wpas_rrm_scan_timeout, wpa_s, | |
1241 | NULL); | |
1242 | return 1; | |
705e2909 AS |
1243 | out_reject: |
1244 | if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) && | |
1245 | wpas_rrm_report_elem(buf, elem_token, reject_mode, | |
1246 | MEASURE_TYPE_BEACON, NULL, 0) < 0) { | |
1247 | wpa_printf(MSG_DEBUG, "RRM: Failed to add report element"); | |
1248 | ret = -1; | |
1249 | } | |
76196ddb AS |
1250 | out: |
1251 | wpas_clear_beacon_rep_data(wpa_s); | |
1252 | return ret; | |
1253 | } | |
1254 | ||
1255 | ||
9664ab8b AS |
1256 | static int |
1257 | wpas_rrm_handle_msr_req_element( | |
1258 | struct wpa_supplicant *wpa_s, | |
1259 | const struct rrm_measurement_request_element *req, | |
1260 | struct wpabuf **buf) | |
ec493469 | 1261 | { |
76196ddb AS |
1262 | int duration_mandatory; |
1263 | ||
9664ab8b AS |
1264 | wpa_printf(MSG_DEBUG, "Measurement request type %d token %d", |
1265 | req->type, req->token); | |
1266 | ||
e1b96e11 AS |
1267 | if (req->mode & MEASUREMENT_REQUEST_MODE_ENABLE) { |
1268 | /* Enable bit is not supported for now */ | |
1269 | wpa_printf(MSG_DEBUG, "RRM: Enable bit not supported, ignore"); | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | if ((req->mode & MEASUREMENT_REQUEST_MODE_PARALLEL) && | |
1274 | req->type > MEASURE_TYPE_RPI_HIST) { | |
1275 | /* Parallel measurements are not supported for now */ | |
1276 | wpa_printf(MSG_DEBUG, | |
1277 | "RRM: Parallel measurements are not supported, reject"); | |
1278 | goto reject; | |
1279 | } | |
1280 | ||
76196ddb AS |
1281 | duration_mandatory = |
1282 | !!(req->mode & MEASUREMENT_REQUEST_MODE_DURATION_MANDATORY); | |
1283 | ||
9664ab8b AS |
1284 | switch (req->type) { |
1285 | case MEASURE_TYPE_LCI: | |
3c716fdb | 1286 | return wpas_rrm_build_lci_report(wpa_s, req, buf); |
76196ddb | 1287 | case MEASURE_TYPE_BEACON: |
d7342014 JM |
1288 | if (duration_mandatory && |
1289 | !(wpa_s->drv_rrm_flags & | |
1290 | WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL)) { | |
1291 | wpa_printf(MSG_DEBUG, | |
1292 | "RRM: Driver does not support dwell time configuration - reject beacon report with mandatory duration"); | |
1293 | goto reject; | |
1294 | } | |
76196ddb AS |
1295 | return wpas_rm_handle_beacon_req(wpa_s, req->token, |
1296 | duration_mandatory, | |
1297 | (const void *) req->variable, | |
1298 | req->len - 3, buf); | |
9664ab8b | 1299 | default: |
ec493469 | 1300 | wpa_printf(MSG_INFO, |
9664ab8b AS |
1301 | "RRM: Unsupported radio measurement type %u", |
1302 | req->type); | |
1303 | break; | |
ec493469 AS |
1304 | } |
1305 | ||
e1b96e11 | 1306 | reject: |
b3c148e9 AS |
1307 | if (!is_multicast_ether_addr(wpa_s->rrm.dst_addr) && |
1308 | wpas_rrm_report_elem(buf, req->token, | |
e1b96e11 AS |
1309 | MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE, |
1310 | req->type, NULL, 0) < 0) { | |
1311 | wpa_printf(MSG_DEBUG, "RRM: Failed to add report element"); | |
1312 | return -1; | |
1313 | } | |
1314 | ||
9664ab8b AS |
1315 | return 0; |
1316 | } | |
ec493469 | 1317 | |
ec493469 | 1318 | |
9664ab8b AS |
1319 | static struct wpabuf * |
1320 | wpas_rrm_process_msr_req_elems(struct wpa_supplicant *wpa_s, const u8 *pos, | |
1321 | size_t len) | |
1322 | { | |
1323 | struct wpabuf *buf = NULL; | |
ec493469 | 1324 | |
9664ab8b | 1325 | while (len) { |
332bf5d3 | 1326 | const struct rrm_measurement_request_element *req; |
9664ab8b | 1327 | int res; |
ec493469 | 1328 | |
9664ab8b | 1329 | if (len < 2) { |
332bf5d3 AS |
1330 | wpa_printf(MSG_DEBUG, "RRM: Truncated element"); |
1331 | goto out; | |
1332 | } | |
1333 | ||
9664ab8b | 1334 | req = (const struct rrm_measurement_request_element *) pos; |
332bf5d3 AS |
1335 | if (req->eid != WLAN_EID_MEASURE_REQUEST) { |
1336 | wpa_printf(MSG_DEBUG, | |
1337 | "RRM: Expected Measurement Request element, but EID is %u", | |
1338 | req->eid); | |
1339 | goto out; | |
1340 | } | |
1341 | ||
1342 | if (req->len < 3) { | |
1343 | wpa_printf(MSG_DEBUG, "RRM: Element length too short"); | |
1344 | goto out; | |
1345 | } | |
332bf5d3 | 1346 | |
9664ab8b | 1347 | if (req->len > len - 2) { |
332bf5d3 AS |
1348 | wpa_printf(MSG_DEBUG, "RRM: Element length too long"); |
1349 | goto out; | |
1350 | } | |
ec493469 | 1351 | |
9664ab8b AS |
1352 | res = wpas_rrm_handle_msr_req_element(wpa_s, req, &buf); |
1353 | if (res < 0) | |
1354 | goto out; | |
ec493469 | 1355 | |
9664ab8b AS |
1356 | pos += req->len + 2; |
1357 | len -= req->len + 2; | |
ec493469 AS |
1358 | } |
1359 | ||
9664ab8b AS |
1360 | return buf; |
1361 | ||
1362 | out: | |
1363 | wpabuf_free(buf); | |
1364 | return NULL; | |
1365 | } | |
1366 | ||
1367 | ||
1368 | void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s, | |
b3c148e9 | 1369 | const u8 *src, const u8 *dst, |
9664ab8b AS |
1370 | const u8 *frame, size_t len) |
1371 | { | |
0c73e410 | 1372 | struct wpabuf *report; |
9664ab8b AS |
1373 | |
1374 | if (wpa_s->wpa_state != WPA_COMPLETED) { | |
1375 | wpa_printf(MSG_INFO, | |
1376 | "RRM: Ignoring radio measurement request: Not associated"); | |
1377 | return; | |
1378 | } | |
1379 | ||
1380 | if (!wpa_s->rrm.rrm_used) { | |
1381 | wpa_printf(MSG_INFO, | |
1382 | "RRM: Ignoring radio measurement request: Not RRM network"); | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | if (len < 3) { | |
1387 | wpa_printf(MSG_INFO, | |
1388 | "RRM: Ignoring too short radio measurement request"); | |
1389 | return; | |
1390 | } | |
1391 | ||
0c73e410 | 1392 | wpa_s->rrm.token = *frame; |
b3c148e9 | 1393 | os_memcpy(wpa_s->rrm.dst_addr, dst, ETH_ALEN); |
9664ab8b AS |
1394 | |
1395 | /* Number of repetitions is not supported */ | |
1396 | ||
1397 | report = wpas_rrm_process_msr_req_elems(wpa_s, frame + 3, len - 3); | |
ec493469 AS |
1398 | if (!report) |
1399 | return; | |
1400 | ||
0c73e410 | 1401 | wpas_rrm_send_msr_report(wpa_s, report); |
332bf5d3 | 1402 | wpabuf_free(report); |
ec493469 AS |
1403 | } |
1404 | ||
1405 | ||
1406 | void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s, | |
1407 | const u8 *src, | |
1408 | const u8 *frame, size_t len, | |
1409 | int rssi) | |
1410 | { | |
1411 | struct wpabuf *buf; | |
1412 | const struct rrm_link_measurement_request *req; | |
1413 | struct rrm_link_measurement_report report; | |
1414 | ||
1415 | if (wpa_s->wpa_state != WPA_COMPLETED) { | |
1416 | wpa_printf(MSG_INFO, | |
1417 | "RRM: Ignoring link measurement request. Not associated"); | |
1418 | return; | |
1419 | } | |
1420 | ||
1421 | if (!wpa_s->rrm.rrm_used) { | |
1422 | wpa_printf(MSG_INFO, | |
1423 | "RRM: Ignoring link measurement request. Not RRM network"); | |
1424 | return; | |
1425 | } | |
1426 | ||
1427 | if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) { | |
1428 | wpa_printf(MSG_INFO, | |
1429 | "RRM: Measurement report failed. TX power insertion not supported"); | |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | req = (const struct rrm_link_measurement_request *) frame; | |
1434 | if (len < sizeof(*req)) { | |
1435 | wpa_printf(MSG_INFO, | |
1436 | "RRM: Link measurement report failed. Request too short"); | |
1437 | return; | |
1438 | } | |
1439 | ||
1440 | os_memset(&report, 0, sizeof(report)); | |
33468e53 | 1441 | report.dialog_token = req->dialog_token; |
ec493469 AS |
1442 | report.tpc.eid = WLAN_EID_TPC_REPORT; |
1443 | report.tpc.len = 2; | |
33468e53 JM |
1444 | /* Note: The driver is expected to update report.tpc.tx_power and |
1445 | * report.tpc.link_margin subfields when sending out this frame. | |
1446 | * Similarly, the driver would need to update report.rx_ant_id and | |
1447 | * report.tx_ant_id subfields. */ | |
ec493469 | 1448 | report.rsni = 255; /* 255 indicates that RSNI is not available */ |
b3060bf9 | 1449 | report.rcpi = rssi_to_rcpi(rssi); |
ec493469 AS |
1450 | |
1451 | /* action_category + action_code */ | |
1452 | buf = wpabuf_alloc(2 + sizeof(report)); | |
1453 | if (buf == NULL) { | |
1454 | wpa_printf(MSG_ERROR, | |
1455 | "RRM: Link measurement report failed. Buffer allocation failed"); | |
1456 | return; | |
1457 | } | |
1458 | ||
1459 | wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); | |
1460 | wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT); | |
1461 | wpabuf_put_data(buf, &report, sizeof(report)); | |
7ba94fc4 | 1462 | wpa_hexdump_buf(MSG_DEBUG, "RRM: Link measurement report", buf); |
ec493469 AS |
1463 | |
1464 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src, | |
1465 | wpa_s->own_addr, wpa_s->bssid, | |
1466 | wpabuf_head(buf), wpabuf_len(buf), 0)) { | |
1467 | wpa_printf(MSG_ERROR, | |
1468 | "RRM: Link measurement report failed. Send action failed"); | |
1469 | } | |
1470 | wpabuf_free(buf); | |
1471 | } | |
76196ddb AS |
1472 | |
1473 | ||
1474 | int wpas_beacon_rep_scan_process(struct wpa_supplicant *wpa_s, | |
1475 | struct wpa_scan_results *scan_res, | |
1476 | struct scan_info *info) | |
1477 | { | |
1478 | size_t i = 0; | |
1479 | struct wpabuf *buf = NULL; | |
1480 | ||
1481 | if (!wpa_s->beacon_rep_data.token) | |
1482 | return 0; | |
1483 | ||
1484 | if (!wpa_s->current_bss) | |
1485 | goto out; | |
1486 | ||
1487 | /* If the measurement was aborted, don't report partial results */ | |
1488 | if (info->aborted) | |
1489 | goto out; | |
1490 | ||
1491 | wpa_printf(MSG_DEBUG, "RRM: TSF BSSID: " MACSTR " current BSS: " MACSTR, | |
1492 | MAC2STR(info->scan_start_tsf_bssid), | |
1493 | MAC2STR(wpa_s->current_bss->bssid)); | |
d7342014 JM |
1494 | if ((wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) && |
1495 | os_memcmp(info->scan_start_tsf_bssid, wpa_s->current_bss->bssid, | |
1496 | ETH_ALEN) != 0) { | |
1497 | wpa_printf(MSG_DEBUG, | |
1498 | "RRM: Ignore scan results due to mismatching TSF BSSID"); | |
76196ddb | 1499 | goto out; |
d7342014 | 1500 | } |
76196ddb AS |
1501 | |
1502 | for (i = 0; i < scan_res->num; i++) { | |
1503 | struct wpa_bss *bss = | |
1504 | wpa_bss_get_bssid(wpa_s, scan_res->res[i]->bssid); | |
1505 | ||
1506 | if (!bss) | |
1507 | continue; | |
1508 | ||
d7342014 JM |
1509 | if ((wpa_s->drv_rrm_flags & |
1510 | WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT) && | |
1511 | os_memcmp(scan_res->res[i]->tsf_bssid, | |
1512 | wpa_s->current_bss->bssid, ETH_ALEN) != 0) { | |
1513 | wpa_printf(MSG_DEBUG, | |
1514 | "RRM: Ignore scan result for " MACSTR | |
1515 | " due to mismatching TSF BSSID" MACSTR, | |
1516 | MAC2STR(scan_res->res[i]->bssid), | |
1517 | MAC2STR(scan_res->res[i]->tsf_bssid)); | |
76196ddb | 1518 | continue; |
d7342014 JM |
1519 | } |
1520 | ||
23eead4d AS |
1521 | /* |
1522 | * Don't report results that were not received during the | |
1523 | * current measurement. | |
1524 | */ | |
d7342014 JM |
1525 | if (!(wpa_s->drv_rrm_flags & |
1526 | WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT)) { | |
1527 | struct os_reltime update_time, diff; | |
1528 | ||
1529 | /* For now, allow 8 ms older results due to some | |
1530 | * unknown issue with cfg80211 BSS table updates during | |
1531 | * a scan with the current BSS. | |
1532 | * TODO: Fix this more properly to avoid having to have | |
1533 | * this type of hacks in place. */ | |
1534 | calculate_update_time(&scan_res->fetch_time, | |
1535 | scan_res->res[i]->age, | |
1536 | &update_time); | |
1537 | os_reltime_sub(&wpa_s->beacon_rep_scan, | |
1538 | &update_time, &diff); | |
1539 | if (os_reltime_before(&update_time, | |
1540 | &wpa_s->beacon_rep_scan) && | |
1541 | (diff.sec || diff.usec >= 8000)) { | |
1542 | wpa_printf(MSG_DEBUG, | |
1543 | "RRM: Ignore scan result for " MACSTR | |
1544 | " due to old update (age(ms) %u, calculated age %u.%06u seconds)", | |
1545 | MAC2STR(scan_res->res[i]->bssid), | |
1546 | scan_res->res[i]->age, | |
1547 | (unsigned int) diff.sec, | |
1548 | (unsigned int) diff.usec); | |
1549 | continue; | |
1550 | } | |
23eead4d AS |
1551 | } else if (info->scan_start_tsf > |
1552 | scan_res->res[i]->parent_tsf) { | |
76196ddb | 1553 | continue; |
23eead4d | 1554 | } |
76196ddb AS |
1555 | |
1556 | if (wpas_add_beacon_rep(wpa_s, &buf, bss, info->scan_start_tsf, | |
1557 | scan_res->res[i]->parent_tsf) < 0) | |
1558 | break; | |
1559 | } | |
1560 | ||
1561 | if (!buf && wpas_beacon_rep_no_results(wpa_s, &buf)) | |
1562 | goto out; | |
1563 | ||
1564 | wpa_hexdump_buf(MSG_DEBUG, "RRM: Radio Measurement report", buf); | |
1565 | ||
1566 | wpas_rrm_send_msr_report(wpa_s, buf); | |
1567 | wpabuf_free(buf); | |
1568 | ||
1569 | out: | |
1570 | wpas_clear_beacon_rep_data(wpa_s); | |
1571 | return 1; | |
1572 | } | |
1573 | ||
1574 | ||
1575 | void wpas_clear_beacon_rep_data(struct wpa_supplicant *wpa_s) | |
1576 | { | |
1577 | struct beacon_rep_data *data = &wpa_s->beacon_rep_data; | |
1578 | ||
1579 | eloop_cancel_timeout(wpas_rrm_scan_timeout, wpa_s, NULL); | |
1580 | bitfield_free(data->eids); | |
1581 | os_free(data->scan_params.freqs); | |
1582 | os_memset(data, 0, sizeof(*data)); | |
1583 | } |