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Commit | Line | Data |
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92c6e2e3 DS |
1 | /* |
2 | * wpa_supplicant - MBO | |
3 | * | |
4 | * Copyright(c) 2015 Intel Deutschland GmbH | |
5 | * Contact Information: | |
6 | * Intel Linux Wireless <ilw@linux.intel.com> | |
7 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
8 | * | |
9 | * This software may be distributed under the terms of the BSD license. | |
10 | * See README for more details. | |
11 | */ | |
12 | ||
13 | #include "utils/includes.h" | |
14 | ||
15 | #include "utils/common.h" | |
16 | #include "common/ieee802_11_defs.h" | |
8f479174 | 17 | #include "common/gas.h" |
92c6e2e3 DS |
18 | #include "config.h" |
19 | #include "wpa_supplicant_i.h" | |
20 | #include "driver_i.h" | |
21 | #include "bss.h" | |
cc9985d1 | 22 | #include "scan.h" |
92c6e2e3 DS |
23 | |
24 | /* type + length + oui + oui type */ | |
25 | #define MBO_IE_HEADER 6 | |
26 | ||
27 | ||
28 | static int wpas_mbo_validate_non_pref_chan(u8 oper_class, u8 chan, u8 reason) | |
29 | { | |
30 | if (reason > MBO_NON_PREF_CHAN_REASON_INT_INTERFERENCE) | |
31 | return -1; | |
32 | ||
33 | /* Only checking the validity of the channel and oper_class */ | |
34 | if (ieee80211_chan_to_freq(NULL, oper_class, chan) == -1) | |
35 | return -1; | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | ||
077232f6 BL |
41 | const u8 * mbo_attr_from_mbo_ie(const u8 *mbo_ie, enum mbo_attr_id attr) |
42 | { | |
43 | const u8 *mbo; | |
44 | u8 ie_len = mbo_ie[1]; | |
45 | ||
46 | if (ie_len < MBO_IE_HEADER - 2) | |
47 | return NULL; | |
48 | mbo = mbo_ie + MBO_IE_HEADER; | |
49 | ||
50 | return get_ie(mbo, 2 + ie_len - MBO_IE_HEADER, attr); | |
51 | } | |
52 | ||
53 | ||
19677b77 BL |
54 | const u8 * mbo_get_attr_from_ies(const u8 *ies, size_t ies_len, |
55 | enum mbo_attr_id attr) | |
56 | { | |
57 | const u8 *mbo_ie; | |
58 | ||
59 | mbo_ie = get_vendor_ie(ies, ies_len, MBO_IE_VENDOR_TYPE); | |
60 | if (!mbo_ie) | |
61 | return NULL; | |
62 | ||
63 | return mbo_attr_from_mbo_ie(mbo_ie, attr); | |
64 | } | |
65 | ||
66 | ||
cb06cf34 DS |
67 | const u8 * wpas_mbo_get_bss_attr(struct wpa_bss *bss, enum mbo_attr_id attr) |
68 | { | |
69 | const u8 *mbo, *end; | |
70 | ||
71 | if (!bss) | |
72 | return NULL; | |
73 | ||
74 | mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE); | |
75 | if (!mbo) | |
76 | return NULL; | |
77 | ||
78 | end = mbo + 2 + mbo[1]; | |
79 | mbo += MBO_IE_HEADER; | |
80 | ||
81 | return get_ie(mbo, end - mbo, attr); | |
82 | } | |
83 | ||
84 | ||
92c6e2e3 DS |
85 | static void wpas_mbo_non_pref_chan_attr_body(struct wpa_supplicant *wpa_s, |
86 | struct wpabuf *mbo, | |
87 | u8 start, u8 end) | |
88 | { | |
89 | u8 i; | |
90 | ||
91 | wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].oper_class); | |
92 | ||
93 | for (i = start; i < end; i++) | |
94 | wpabuf_put_u8(mbo, wpa_s->non_pref_chan[i].chan); | |
95 | ||
96 | wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].preference); | |
97 | wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].reason); | |
92c6e2e3 DS |
98 | } |
99 | ||
100 | ||
74f8e768 AB |
101 | static void wpas_mbo_non_pref_chan_attr_hdr(struct wpabuf *mbo, size_t size) |
102 | { | |
103 | wpabuf_put_u8(mbo, MBO_ATTR_ID_NON_PREF_CHAN_REPORT); | |
104 | wpabuf_put_u8(mbo, size); /* Length */ | |
105 | } | |
106 | ||
107 | ||
92c6e2e3 DS |
108 | static void wpas_mbo_non_pref_chan_attr(struct wpa_supplicant *wpa_s, |
109 | struct wpabuf *mbo, u8 start, u8 end) | |
110 | { | |
4a83d4b6 | 111 | size_t size = end - start + 3; |
92c6e2e3 DS |
112 | |
113 | if (size + 2 > wpabuf_tailroom(mbo)) | |
114 | return; | |
115 | ||
74f8e768 | 116 | wpas_mbo_non_pref_chan_attr_hdr(mbo, size); |
92c6e2e3 DS |
117 | wpas_mbo_non_pref_chan_attr_body(wpa_s, mbo, start, end); |
118 | } | |
119 | ||
120 | ||
2d5b8614 DS |
121 | static void wpas_mbo_non_pref_chan_subelem_hdr(struct wpabuf *mbo, u8 len) |
122 | { | |
123 | wpabuf_put_u8(mbo, WLAN_EID_VENDOR_SPECIFIC); | |
124 | wpabuf_put_u8(mbo, len); /* Length */ | |
125 | wpabuf_put_be24(mbo, OUI_WFA); | |
126 | wpabuf_put_u8(mbo, MBO_ATTR_ID_NON_PREF_CHAN_REPORT); | |
127 | } | |
128 | ||
129 | ||
130 | static void wpas_mbo_non_pref_chan_subelement(struct wpa_supplicant *wpa_s, | |
131 | struct wpabuf *mbo, u8 start, | |
132 | u8 end) | |
133 | { | |
4a83d4b6 | 134 | size_t size = end - start + 7; |
2d5b8614 DS |
135 | |
136 | if (size + 2 > wpabuf_tailroom(mbo)) | |
137 | return; | |
138 | ||
139 | wpas_mbo_non_pref_chan_subelem_hdr(mbo, size); | |
140 | wpas_mbo_non_pref_chan_attr_body(wpa_s, mbo, start, end); | |
141 | } | |
142 | ||
92c6e2e3 | 143 | |
2d5b8614 DS |
144 | static void wpas_mbo_non_pref_chan_attrs(struct wpa_supplicant *wpa_s, |
145 | struct wpabuf *mbo, int subelement) | |
92c6e2e3 DS |
146 | { |
147 | u8 i, start = 0; | |
148 | struct wpa_mbo_non_pref_channel *start_pref; | |
149 | ||
2d5b8614 DS |
150 | if (!wpa_s->non_pref_chan || !wpa_s->non_pref_chan_num) { |
151 | if (subelement) | |
152 | wpas_mbo_non_pref_chan_subelem_hdr(mbo, 4); | |
74f8e768 AB |
153 | else |
154 | wpas_mbo_non_pref_chan_attr_hdr(mbo, 0); | |
92c6e2e3 | 155 | return; |
2d5b8614 | 156 | } |
92c6e2e3 DS |
157 | start_pref = &wpa_s->non_pref_chan[0]; |
158 | ||
159 | for (i = 1; i <= wpa_s->non_pref_chan_num; i++) { | |
160 | struct wpa_mbo_non_pref_channel *non_pref = NULL; | |
161 | ||
162 | if (i < wpa_s->non_pref_chan_num) | |
163 | non_pref = &wpa_s->non_pref_chan[i]; | |
164 | if (!non_pref || | |
165 | non_pref->oper_class != start_pref->oper_class || | |
166 | non_pref->reason != start_pref->reason || | |
92c6e2e3 | 167 | non_pref->preference != start_pref->preference) { |
2d5b8614 DS |
168 | if (subelement) |
169 | wpas_mbo_non_pref_chan_subelement(wpa_s, mbo, | |
170 | start, i); | |
171 | else | |
172 | wpas_mbo_non_pref_chan_attr(wpa_s, mbo, start, | |
173 | i); | |
92c6e2e3 DS |
174 | |
175 | if (!non_pref) | |
176 | return; | |
177 | ||
178 | start = i; | |
179 | start_pref = non_pref; | |
180 | } | |
181 | } | |
182 | } | |
183 | ||
184 | ||
077232f6 BL |
185 | int wpas_mbo_ie(struct wpa_supplicant *wpa_s, u8 *buf, size_t len, |
186 | int add_oce_capa) | |
92c6e2e3 DS |
187 | { |
188 | struct wpabuf *mbo; | |
189 | int res; | |
190 | ||
332aadb8 AP |
191 | if (len < MBO_IE_HEADER + 3 + 7 + |
192 | ((wpa_s->enable_oce & OCE_STA) ? 3 : 0)) | |
92c6e2e3 DS |
193 | return 0; |
194 | ||
195 | /* Leave room for the MBO IE header */ | |
196 | mbo = wpabuf_alloc(len - MBO_IE_HEADER); | |
197 | if (!mbo) | |
198 | return 0; | |
199 | ||
200 | /* Add non-preferred channels attribute */ | |
2d5b8614 | 201 | wpas_mbo_non_pref_chan_attrs(wpa_s, mbo, 0); |
92c6e2e3 | 202 | |
c5d193d7 DS |
203 | /* |
204 | * Send cellular capabilities attribute even if AP does not advertise | |
205 | * cellular capabilities. | |
206 | */ | |
207 | wpabuf_put_u8(mbo, MBO_ATTR_ID_CELL_DATA_CAPA); | |
208 | wpabuf_put_u8(mbo, 1); | |
209 | wpabuf_put_u8(mbo, wpa_s->conf->mbo_cell_capa); | |
210 | ||
332aadb8 | 211 | /* Add OCE capability indication attribute if OCE is enabled */ |
077232f6 | 212 | if ((wpa_s->enable_oce & OCE_STA) && add_oce_capa) { |
332aadb8 AP |
213 | wpabuf_put_u8(mbo, OCE_ATTR_ID_CAPA_IND); |
214 | wpabuf_put_u8(mbo, 1); | |
215 | wpabuf_put_u8(mbo, OCE_RELEASE); | |
216 | } | |
217 | ||
92c6e2e3 DS |
218 | res = mbo_add_ie(buf, len, wpabuf_head_u8(mbo), wpabuf_len(mbo)); |
219 | if (!res) | |
332aadb8 | 220 | wpa_printf(MSG_ERROR, "Failed to add MBO/OCE IE"); |
92c6e2e3 DS |
221 | |
222 | wpabuf_free(mbo); | |
223 | return res; | |
224 | } | |
225 | ||
226 | ||
016082e9 AS |
227 | static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s, |
228 | const u8 *data, size_t len) | |
2d5b8614 DS |
229 | { |
230 | struct wpabuf *buf; | |
231 | int res; | |
232 | ||
233 | /* | |
234 | * Send WNM-Notification Request frame only in case of a change in | |
235 | * non-preferred channels list during association, if the AP supports | |
236 | * MBO. | |
237 | */ | |
238 | if (wpa_s->wpa_state != WPA_COMPLETED || !wpa_s->current_bss || | |
239 | !wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) | |
240 | return; | |
241 | ||
016082e9 | 242 | buf = wpabuf_alloc(4 + len); |
2d5b8614 DS |
243 | if (!buf) |
244 | return; | |
245 | ||
246 | wpabuf_put_u8(buf, WLAN_ACTION_WNM); | |
247 | wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ); | |
248 | wpa_s->mbo_wnm_token++; | |
249 | if (wpa_s->mbo_wnm_token == 0) | |
250 | wpa_s->mbo_wnm_token++; | |
251 | wpabuf_put_u8(buf, wpa_s->mbo_wnm_token); | |
252 | wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); /* Type */ | |
253 | ||
016082e9 | 254 | wpabuf_put_data(buf, data, len); |
2d5b8614 DS |
255 | |
256 | res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
257 | wpa_s->own_addr, wpa_s->bssid, | |
258 | wpabuf_head(buf), wpabuf_len(buf), 0); | |
259 | if (res < 0) | |
260 | wpa_printf(MSG_DEBUG, | |
261 | "Failed to send WNM-Notification Request frame with non-preferred channel list"); | |
262 | ||
263 | wpabuf_free(buf); | |
264 | } | |
265 | ||
266 | ||
016082e9 AS |
267 | static void wpas_mbo_non_pref_chan_changed(struct wpa_supplicant *wpa_s) |
268 | { | |
269 | struct wpabuf *buf; | |
270 | ||
271 | buf = wpabuf_alloc(512); | |
272 | if (!buf) | |
273 | return; | |
274 | ||
275 | wpas_mbo_non_pref_chan_attrs(wpa_s, buf, 1); | |
276 | wpas_mbo_send_wnm_notification(wpa_s, wpabuf_head_u8(buf), | |
277 | wpabuf_len(buf)); | |
822c756e | 278 | wpas_update_mbo_connect_params(wpa_s); |
016082e9 AS |
279 | wpabuf_free(buf); |
280 | } | |
281 | ||
282 | ||
92c6e2e3 DS |
283 | static int wpa_non_pref_chan_is_eq(struct wpa_mbo_non_pref_channel *a, |
284 | struct wpa_mbo_non_pref_channel *b) | |
285 | { | |
286 | return a->oper_class == b->oper_class && a->chan == b->chan; | |
287 | } | |
288 | ||
289 | ||
290 | /* | |
291 | * wpa_non_pref_chan_cmp - Compare two channels for sorting | |
292 | * | |
293 | * In MBO IE non-preferred channel subelement we can put many channels in an | |
294 | * attribute if they are in the same operating class and have the same | |
4a83d4b6 | 295 | * preference and reason. To make it easy for the functions that build |
296 | * the IE attributes and WNM Request subelements, save the channels sorted | |
297 | * by their oper_class and reason. | |
92c6e2e3 DS |
298 | */ |
299 | static int wpa_non_pref_chan_cmp(const void *_a, const void *_b) | |
300 | { | |
301 | const struct wpa_mbo_non_pref_channel *a = _a, *b = _b; | |
302 | ||
303 | if (a->oper_class != b->oper_class) | |
2f7bc068 | 304 | return (int) a->oper_class - (int) b->oper_class; |
92c6e2e3 | 305 | if (a->reason != b->reason) |
2f7bc068 JM |
306 | return (int) a->reason - (int) b->reason; |
307 | return (int) a->preference - (int) b->preference; | |
92c6e2e3 DS |
308 | } |
309 | ||
310 | ||
311 | int wpas_mbo_update_non_pref_chan(struct wpa_supplicant *wpa_s, | |
312 | const char *non_pref_chan) | |
313 | { | |
314 | char *cmd, *token, *context = NULL; | |
315 | struct wpa_mbo_non_pref_channel *chans = NULL, *tmp_chans; | |
316 | size_t num = 0, size = 0; | |
317 | unsigned i; | |
318 | ||
319 | wpa_printf(MSG_DEBUG, "MBO: Update non-preferred channels, non_pref_chan=%s", | |
320 | non_pref_chan ? non_pref_chan : "N/A"); | |
321 | ||
322 | /* | |
dca4b503 AP |
323 | * The shortest channel configuration is 7 characters - 3 colons and |
324 | * 4 values. | |
92c6e2e3 | 325 | */ |
dca4b503 | 326 | if (!non_pref_chan || os_strlen(non_pref_chan) < 7) |
92c6e2e3 DS |
327 | goto update; |
328 | ||
329 | cmd = os_strdup(non_pref_chan); | |
330 | if (!cmd) | |
331 | return -1; | |
332 | ||
333 | while ((token = str_token(cmd, " ", &context))) { | |
334 | struct wpa_mbo_non_pref_channel *chan; | |
335 | int ret; | |
336 | unsigned int _oper_class; | |
337 | unsigned int _chan; | |
338 | unsigned int _preference; | |
339 | unsigned int _reason; | |
92c6e2e3 DS |
340 | |
341 | if (num == size) { | |
342 | size = size ? size * 2 : 1; | |
343 | tmp_chans = os_realloc_array(chans, size, | |
344 | sizeof(*chans)); | |
345 | if (!tmp_chans) { | |
346 | wpa_printf(MSG_ERROR, | |
347 | "Couldn't reallocate non_pref_chan"); | |
348 | goto fail; | |
349 | } | |
350 | chans = tmp_chans; | |
351 | } | |
352 | ||
353 | chan = &chans[num]; | |
354 | ||
4a83d4b6 | 355 | ret = sscanf(token, "%u:%u:%u:%u", &_oper_class, |
356 | &_chan, &_preference, &_reason); | |
357 | if (ret != 4 || | |
92c6e2e3 | 358 | _oper_class > 255 || _chan > 255 || |
4a83d4b6 | 359 | _preference > 255 || _reason > 65535 ) { |
92c6e2e3 DS |
360 | wpa_printf(MSG_ERROR, "Invalid non-pref chan input %s", |
361 | token); | |
362 | goto fail; | |
363 | } | |
364 | chan->oper_class = _oper_class; | |
365 | chan->chan = _chan; | |
366 | chan->preference = _preference; | |
367 | chan->reason = _reason; | |
92c6e2e3 DS |
368 | |
369 | if (wpas_mbo_validate_non_pref_chan(chan->oper_class, | |
370 | chan->chan, chan->reason)) { | |
371 | wpa_printf(MSG_ERROR, | |
372 | "Invalid non_pref_chan: oper class %d chan %d reason %d", | |
373 | chan->oper_class, chan->chan, chan->reason); | |
374 | goto fail; | |
375 | } | |
376 | ||
377 | for (i = 0; i < num; i++) | |
378 | if (wpa_non_pref_chan_is_eq(chan, &chans[i])) | |
379 | break; | |
380 | if (i != num) { | |
381 | wpa_printf(MSG_ERROR, | |
382 | "oper class %d chan %d is duplicated", | |
383 | chan->oper_class, chan->chan); | |
384 | goto fail; | |
385 | } | |
386 | ||
387 | num++; | |
388 | } | |
389 | ||
390 | os_free(cmd); | |
391 | ||
392 | if (chans) { | |
393 | qsort(chans, num, sizeof(struct wpa_mbo_non_pref_channel), | |
394 | wpa_non_pref_chan_cmp); | |
395 | } | |
396 | ||
397 | update: | |
398 | os_free(wpa_s->non_pref_chan); | |
399 | wpa_s->non_pref_chan = chans; | |
400 | wpa_s->non_pref_chan_num = num; | |
016082e9 | 401 | wpas_mbo_non_pref_chan_changed(wpa_s); |
92c6e2e3 DS |
402 | |
403 | return 0; | |
404 | ||
405 | fail: | |
406 | os_free(chans); | |
407 | os_free(cmd); | |
408 | return -1; | |
409 | } | |
c5d193d7 DS |
410 | |
411 | ||
412 | void wpas_mbo_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ie) | |
413 | { | |
332aadb8 AP |
414 | u8 *len; |
415 | ||
c5d193d7 | 416 | wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC); |
332aadb8 AP |
417 | len = wpabuf_put(ie, 1); |
418 | ||
c5d193d7 DS |
419 | wpabuf_put_be24(ie, OUI_WFA); |
420 | wpabuf_put_u8(ie, MBO_OUI_TYPE); | |
421 | ||
422 | wpabuf_put_u8(ie, MBO_ATTR_ID_CELL_DATA_CAPA); | |
423 | wpabuf_put_u8(ie, 1); | |
424 | wpabuf_put_u8(ie, wpa_s->conf->mbo_cell_capa); | |
332aadb8 AP |
425 | if (wpa_s->enable_oce & OCE_STA) { |
426 | wpabuf_put_u8(ie, OCE_ATTR_ID_CAPA_IND); | |
427 | wpabuf_put_u8(ie, 1); | |
428 | wpabuf_put_u8(ie, OCE_RELEASE); | |
429 | } | |
430 | *len = (u8 *) wpabuf_put(ie, 0) - len - 1; | |
c5d193d7 | 431 | } |
5e57ba25 AS |
432 | |
433 | ||
dd599908 AS |
434 | void wpas_mbo_ie_trans_req(struct wpa_supplicant *wpa_s, const u8 *mbo_ie, |
435 | size_t len) | |
436 | { | |
af8bc24d | 437 | const u8 *pos, *cell_pref = NULL; |
dd599908 AS |
438 | u8 id, elen; |
439 | u16 disallowed_sec = 0; | |
440 | ||
441 | if (len <= 4 || WPA_GET_BE24(mbo_ie) != OUI_WFA || | |
442 | mbo_ie[3] != MBO_OUI_TYPE) | |
443 | return; | |
444 | ||
445 | pos = mbo_ie + 4; | |
446 | len -= 4; | |
447 | ||
448 | while (len >= 2) { | |
449 | id = *pos++; | |
450 | elen = *pos++; | |
451 | len -= 2; | |
452 | ||
453 | if (elen > len) | |
454 | goto fail; | |
455 | ||
456 | switch (id) { | |
457 | case MBO_ATTR_ID_CELL_DATA_PREF: | |
458 | if (elen != 1) | |
459 | goto fail; | |
460 | ||
461 | if (wpa_s->conf->mbo_cell_capa == | |
462 | MBO_CELL_CAPA_AVAILABLE) | |
463 | cell_pref = pos; | |
464 | else | |
465 | wpa_printf(MSG_DEBUG, | |
466 | "MBO: Station does not support Cellular data connection"); | |
467 | break; | |
468 | case MBO_ATTR_ID_TRANSITION_REASON: | |
469 | if (elen != 1) | |
470 | goto fail; | |
471 | ||
af8bc24d KV |
472 | wpa_s->wnm_mbo_trans_reason_present = 1; |
473 | wpa_s->wnm_mbo_transition_reason = *pos; | |
dd599908 AS |
474 | break; |
475 | case MBO_ATTR_ID_ASSOC_RETRY_DELAY: | |
476 | if (elen != 2) | |
477 | goto fail; | |
478 | ||
479 | if (wpa_s->wnm_mode & | |
480 | WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) { | |
481 | wpa_printf(MSG_DEBUG, | |
482 | "MBO: Unexpected association retry delay, BSS is terminating"); | |
483 | goto fail; | |
484 | } else if (wpa_s->wnm_mode & | |
485 | WNM_BSS_TM_REQ_DISASSOC_IMMINENT) { | |
486 | disallowed_sec = WPA_GET_LE16(pos); | |
b04854ce AP |
487 | wpa_printf(MSG_DEBUG, |
488 | "MBO: Association retry delay: %u", | |
489 | disallowed_sec); | |
dd599908 AS |
490 | } else { |
491 | wpa_printf(MSG_DEBUG, | |
492 | "MBO: Association retry delay attribute not in disassoc imminent mode"); | |
493 | } | |
494 | ||
495 | break; | |
496 | case MBO_ATTR_ID_AP_CAPA_IND: | |
497 | case MBO_ATTR_ID_NON_PREF_CHAN_REPORT: | |
498 | case MBO_ATTR_ID_CELL_DATA_CAPA: | |
499 | case MBO_ATTR_ID_ASSOC_DISALLOW: | |
500 | case MBO_ATTR_ID_TRANSITION_REJECT_REASON: | |
501 | wpa_printf(MSG_DEBUG, | |
502 | "MBO: Attribute %d should not be included in BTM Request frame", | |
503 | id); | |
504 | break; | |
505 | default: | |
506 | wpa_printf(MSG_DEBUG, "MBO: Unknown attribute id %u", | |
507 | id); | |
508 | return; | |
509 | } | |
510 | ||
511 | pos += elen; | |
512 | len -= elen; | |
513 | } | |
514 | ||
515 | if (cell_pref) | |
516 | wpa_msg(wpa_s, MSG_INFO, MBO_CELL_PREFERENCE "preference=%u", | |
517 | *cell_pref); | |
518 | ||
af8bc24d | 519 | if (wpa_s->wnm_mbo_trans_reason_present) |
dd599908 | 520 | wpa_msg(wpa_s, MSG_INFO, MBO_TRANSITION_REASON "reason=%u", |
af8bc24d | 521 | wpa_s->wnm_mbo_transition_reason); |
dd599908 AS |
522 | |
523 | if (disallowed_sec && wpa_s->current_bss) | |
524 | wpa_bss_tmp_disallow(wpa_s, wpa_s->current_bss->bssid, | |
19677b77 | 525 | disallowed_sec, 0); |
dd599908 AS |
526 | |
527 | return; | |
528 | fail: | |
529 | wpa_printf(MSG_DEBUG, "MBO IE parsing failed (id=%u len=%u left=%zu)", | |
530 | id, elen, len); | |
531 | } | |
c8082d2b AS |
532 | |
533 | ||
534 | size_t wpas_mbo_ie_bss_trans_reject(struct wpa_supplicant *wpa_s, u8 *pos, | |
535 | size_t len, | |
536 | enum mbo_transition_reject_reason reason) | |
537 | { | |
538 | u8 reject_attr[3]; | |
539 | ||
540 | reject_attr[0] = MBO_ATTR_ID_TRANSITION_REJECT_REASON; | |
541 | reject_attr[1] = 1; | |
542 | reject_attr[2] = reason; | |
543 | ||
544 | return mbo_add_ie(pos, len, reject_attr, sizeof(reject_attr)); | |
545 | } | |
016082e9 AS |
546 | |
547 | ||
548 | void wpas_mbo_update_cell_capa(struct wpa_supplicant *wpa_s, u8 mbo_cell_capa) | |
549 | { | |
550 | u8 cell_capa[7]; | |
551 | ||
552 | if (wpa_s->conf->mbo_cell_capa == mbo_cell_capa) { | |
553 | wpa_printf(MSG_DEBUG, | |
554 | "MBO: Cellular capability already set to %u", | |
555 | mbo_cell_capa); | |
556 | return; | |
557 | } | |
558 | ||
559 | wpa_s->conf->mbo_cell_capa = mbo_cell_capa; | |
560 | ||
561 | cell_capa[0] = WLAN_EID_VENDOR_SPECIFIC; | |
562 | cell_capa[1] = 5; /* Length */ | |
563 | WPA_PUT_BE24(cell_capa + 2, OUI_WFA); | |
564 | cell_capa[5] = MBO_ATTR_ID_CELL_DATA_CAPA; | |
565 | cell_capa[6] = mbo_cell_capa; | |
566 | ||
567 | wpas_mbo_send_wnm_notification(wpa_s, cell_capa, 7); | |
cc9985d1 | 568 | wpa_supplicant_set_default_scan_ies(wpa_s); |
822c756e | 569 | wpas_update_mbo_connect_params(wpa_s); |
016082e9 | 570 | } |
8f479174 | 571 | |
572 | ||
573 | struct wpabuf * mbo_build_anqp_buf(struct wpa_supplicant *wpa_s, | |
2316cb35 | 574 | struct wpa_bss *bss, u32 mbo_subtypes) |
8f479174 | 575 | { |
576 | struct wpabuf *anqp_buf; | |
577 | u8 *len_pos; | |
2316cb35 | 578 | u8 i; |
8f479174 | 579 | |
580 | if (!wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE)) { | |
581 | wpa_printf(MSG_INFO, "MBO: " MACSTR | |
582 | " does not support MBO - cannot request MBO ANQP elements from it", | |
583 | MAC2STR(bss->bssid)); | |
584 | return NULL; | |
585 | } | |
586 | ||
2316cb35 AS |
587 | /* Allocate size for the maximum case - all MBO subtypes are set */ |
588 | anqp_buf = wpabuf_alloc(9 + MAX_MBO_ANQP_SUBTYPE); | |
8f479174 | 589 | if (!anqp_buf) |
590 | return NULL; | |
591 | ||
592 | len_pos = gas_anqp_add_element(anqp_buf, ANQP_VENDOR_SPECIFIC); | |
593 | wpabuf_put_be24(anqp_buf, OUI_WFA); | |
594 | wpabuf_put_u8(anqp_buf, MBO_ANQP_OUI_TYPE); | |
595 | ||
2316cb35 AS |
596 | wpabuf_put_u8(anqp_buf, MBO_ANQP_SUBTYPE_QUERY_LIST); |
597 | ||
598 | /* The first valid MBO subtype is 1 */ | |
599 | for (i = 1; i <= MAX_MBO_ANQP_SUBTYPE; i++) { | |
600 | if (mbo_subtypes & BIT(i)) | |
601 | wpabuf_put_u8(anqp_buf, i); | |
602 | } | |
603 | ||
8f479174 | 604 | gas_anqp_set_element_len(anqp_buf, len_pos); |
605 | ||
606 | return anqp_buf; | |
607 | } | |
34f28519 JM |
608 | |
609 | ||
610 | void mbo_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s, | |
611 | struct wpa_bss *bss, const u8 *sa, | |
612 | const u8 *data, size_t slen) | |
613 | { | |
614 | const u8 *pos = data; | |
615 | u8 subtype; | |
616 | ||
617 | if (slen < 1) | |
618 | return; | |
619 | ||
620 | subtype = *pos++; | |
621 | slen--; | |
622 | ||
623 | switch (subtype) { | |
624 | case MBO_ANQP_SUBTYPE_CELL_CONN_PREF: | |
625 | if (slen < 1) | |
626 | break; | |
627 | wpa_msg(wpa_s, MSG_INFO, RX_MBO_ANQP MACSTR | |
628 | " cell_conn_pref=%u", MAC2STR(sa), *pos); | |
629 | break; | |
630 | default: | |
631 | wpa_printf(MSG_DEBUG, "MBO: Unsupported ANQP subtype %u", | |
632 | subtype); | |
633 | break; | |
634 | } | |
635 | } |