]> git.ipfire.org Git - thirdparty/hostap.git/blame - wpa_supplicant/wnm_sta.c
projects / thirdparty / hostap.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Use os_memdup()
[thirdparty/hostap.git] / wpa_supplicant / wnm_sta.c
CommitLineData
75cad1a0
XC		 1/*
2 * wpa_supplicant - WNM
ae8535b6 3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
75cad1a0
XC		 4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "utils/includes.h"
10
11#include "utils/common.h"
12#include "common/ieee802_11_defs.h"
e1117c1c 13#include "common/ieee802_11_common.h"
ae8535b6 14#include "common/wpa_ctrl.h"
75cad1a0 15#include "rsn_supp/wpa.h"
af8bc24d 16#include "config.h"
61c54976
JM		 17#include "wpa_supplicant_i.h"
18#include "driver_i.h"
2049a875 19#include "scan.h"
e27d20bb
VK		 20#include "ctrl_iface.h"
21#include "bss.h"
22#include "wnm_sta.h"
95a3ea94 23#include "hs20_supplicant.h"
75cad1a0
XC		 24
25#define MAX_TFS_IE_LEN 1024
e27d20bb 26#define WNM_MAX_NEIGHBOR_REPORT 10
75cad1a0 27
2f195639 28#define WNM_SCAN_RESULT_AGE 2 /* 2 seconds */
75cad1a0
XC		 29
30/* get the TFS IE from driver */
31static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
32 u16 *buf_len, enum wnm_oper oper)
33{
34 wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);
35
36 return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
37}
38
39
40/* set the TFS IE to driver */
41static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
dacd789f 42 const u8 *addr, const u8 *buf, u16 buf_len,
75cad1a0
XC		 43 enum wnm_oper oper)
44{
dacd789f
JM		 45 u16 len = buf_len;
46
75cad1a0
XC		 47 wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);
48
dacd789f 49 return wpa_drv_wnm_oper(wpa_s, oper, addr, (u8 *) buf, &len);
75cad1a0
XC		 50}
51
52
53/* MLME-SLEEPMODE.request */
54int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
cd0ef657 55 u8 action, u16 intval, struct wpabuf *tfs_req)
75cad1a0
XC		 56{
57 struct ieee80211_mgmt *mgmt;
58 int res;
59 size_t len;
60 struct wnm_sleep_element *wnmsleep_ie;
61 u8 *wnmtfs_ie;
62 u8 wnmsleep_ie_len;
63 u16 wnmtfs_ie_len; /* possibly multiple IE(s) */
64 enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
65 WNM_SLEEP_TFS_REQ_IE_NONE;
66
cd0ef657
JM		 67 wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
68 "action=%s to " MACSTR,
69 action == 0 ? "enter" : "exit",
70 MAC2STR(wpa_s->bssid));
71
75cad1a0
XC		 72 /* WNM-Sleep Mode IE */
73 wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
74 wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
75 if (wnmsleep_ie == NULL)
76 return -1;
77 wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
78 wnmsleep_ie->len = wnmsleep_ie_len - 2;
79 wnmsleep_ie->action_type = action;
80 wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
e9199e31 81 wnmsleep_ie->intval = host_to_le16(intval);
cd0ef657
JM		 82 wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
83 (u8 *) wnmsleep_ie, wnmsleep_ie_len);
75cad1a0
XC		 84
85 /* TFS IE(s) */
cd0ef657
JM		 86 if (tfs_req) {
87 wnmtfs_ie_len = wpabuf_len(tfs_req);
a1f11e34 88 wnmtfs_ie = os_memdup(wpabuf_head(tfs_req), wnmtfs_ie_len);
cd0ef657
JM		 89 if (wnmtfs_ie == NULL) {
90 os_free(wnmsleep_ie);
91 return -1;
92 }
cd0ef657
JM		 93 } else {
94 wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
95 if (wnmtfs_ie == NULL) {
96 os_free(wnmsleep_ie);
97 return -1;
98 }
99 if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
100 tfs_oper)) {
101 wnmtfs_ie_len = 0;
102 os_free(wnmtfs_ie);
103 wnmtfs_ie = NULL;
104 }
75cad1a0 105 }
cd0ef657
JM		 106 wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
107 (u8 *) wnmtfs_ie, wnmtfs_ie_len);
75cad1a0
XC		 108
109 mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
110 if (mgmt == NULL) {
111 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
112 "WNM-Sleep Request action frame");
14df897c
JM		 113 os_free(wnmsleep_ie);
114 os_free(wnmtfs_ie);
75cad1a0
XC		 115 return -1;
116 }
117
118 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
119 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
120 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
121 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
122 WLAN_FC_STYPE_ACTION);
123 mgmt->u.action.category = WLAN_ACTION_WNM;
124 mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
e0c54a15 125 mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
75cad1a0
XC		 126 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
127 wnmsleep_ie_len);
128 /* copy TFS IE here */
129 if (wnmtfs_ie_len > 0) {
130 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
131 wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
132 }
133
134 len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
135 wnmtfs_ie_len;
136
137 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
138 wpa_s->own_addr, wpa_s->bssid,
139 &mgmt->u.action.category, len, 0);
140 if (res < 0)
141 wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
142 "(action=%d, intval=%d)", action, intval);
03ed0a52
JM		 143 else
144 wpa_s->wnmsleep_used = 1;
75cad1a0
XC		 145
146 os_free(wnmsleep_ie);
147 os_free(wnmtfs_ie);
148 os_free(mgmt);
149
150 return res;
151}
152
153
74b4a360 154static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
dacd789f
JM		 155 const u8 *tfsresp_ie_start,
156 const u8 *tfsresp_ie_end)
74b4a360
JM		 157{
158 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
159 wpa_s->bssid, NULL, NULL);
160 /* remove GTK/IGTK ?? */
161
162 /* set the TFS Resp IE(s) */
163 if (tfsresp_ie_start && tfsresp_ie_end &&
164 tfsresp_ie_end - tfsresp_ie_start >= 0) {
165 u16 tfsresp_ie_len;
166 tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
167 tfsresp_ie_start;
168 wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
169 /* pass the TFS Resp IE(s) to driver for processing */
170 if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
171 tfsresp_ie_start,
dacd789f 172 tfsresp_ie_len,
74b4a360
JM		 173 WNM_SLEEP_TFS_RESP_IE_SET))
174 wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
175 }
176}
177
178
179static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
180 const u8 *frm, u16 key_len_total)
181{
182 u8 *ptr, *end;
183 u8 gtk_len;
184
185 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM, wpa_s->bssid,
186 NULL, NULL);
187
188 /* Install GTK/IGTK */
189
190 /* point to key data field */
dbfb8e82 191 ptr = (u8 *) frm + 1 + 2;
74b4a360
JM		 192 end = ptr + key_len_total;
193 wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);
194
2cb28a4c
JM		 195 if (key_len_total && !wpa_sm_pmf_enabled(wpa_s->wpa)) {
196 wpa_msg(wpa_s, MSG_INFO,
197 "WNM: Ignore Key Data in WNM-Sleep Mode Response - PMF not enabled");
198 return;
199 }
200
bdce45b8
JM		 201 while (end - ptr > 1) {
202 if (2 + ptr[1] > end - ptr) {
74b4a360
JM		 203 wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
204 "length");
205 if (end > ptr) {
206 wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
207 ptr, end - ptr);
208 }
209 break;
210 }
211 if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
212 if (ptr[1] < 11 + 5) {
213 wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
214 "subelem");
215 break;
216 }
217 gtk_len = *(ptr + 4);
218 if (ptr[1] < 11 + gtk_len ||
219 gtk_len < 5 || gtk_len > 32) {
220 wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
221 "subelem");
222 break;
223 }
224 wpa_wnmsleep_install_key(
225 wpa_s->wpa,
226 WNM_SLEEP_SUBELEM_GTK,
227 ptr);
228 ptr += 13 + gtk_len;
229#ifdef CONFIG_IEEE80211W
230 } else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
231 if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
232 wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
233 "subelem");
234 break;
235 }
236 wpa_wnmsleep_install_key(wpa_s->wpa,
237 WNM_SLEEP_SUBELEM_IGTK, ptr);
238 ptr += 10 + WPA_IGTK_LEN;
239#endif /* CONFIG_IEEE80211W */
240 } else
241 break; /* skip the loop */
242 }
243}
244
245
75cad1a0
XC		 246static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
247 const u8 *frm, int len)
248{
249 /*
9a147ba1 250 * Action [1] | Dialog Token [1] | Key Data Len [2] | Key Data |
75cad1a0
XC		 251 * WNM-Sleep Mode IE | TFS Response IE
252 */
dacd789f 253 const u8 *pos = frm; /* point to payload after the action field */
9a147ba1 254 u16 key_len_total;
75cad1a0
XC		 255 struct wnm_sleep_element *wnmsleep_ie = NULL;
256 /* multiple TFS Resp IE (assuming consecutive) */
dacd789f
JM		 257 const u8 *tfsresp_ie_start = NULL;
258 const u8 *tfsresp_ie_end = NULL;
fecc09ed 259 size_t left;
75cad1a0 260
03ed0a52
JM		 261 if (!wpa_s->wnmsleep_used) {
262 wpa_printf(MSG_DEBUG,
263 "WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode has not been used in this association");
264 return;
265 }
266
9a147ba1
JM		 267 if (len < 3)
268 return;
269 key_len_total = WPA_GET_LE16(frm + 1);
270
dbfb8e82
JM		 271 wpa_printf(MSG_DEBUG, "WNM-Sleep Mode Response token=%u key_len_total=%d",
272 frm[0], key_len_total);
fecc09ed
JM		 273 left = len - 3;
274 if (key_len_total > left) {
68db9ab0
JM		 275 wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
276 return;
277 }
fecc09ed 278 pos += 3 + key_len_total;
bdce45b8 279 while (pos - frm + 1 < len) {
75cad1a0 280 u8 ie_len = *(pos + 1);
bdce45b8 281 if (2 + ie_len > frm + len - pos) {
68db9ab0
JM		 282 wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
283 break;
284 }
285 wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
8acbe7f2 286 if (*pos == WLAN_EID_WNMSLEEP && ie_len >= 4)
75cad1a0
XC		 287 wnmsleep_ie = (struct wnm_sleep_element *) pos;
288 else if (*pos == WLAN_EID_TFS_RESP) {
289 if (!tfsresp_ie_start)
290 tfsresp_ie_start = pos;
291 tfsresp_ie_end = pos;
292 } else
293 wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
294 pos += ie_len + 2;
295 }
296
297 if (!wnmsleep_ie) {
298 wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
299 return;
300 }
301
62f6fbb4
JM		 302 if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
303 wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
75cad1a0
XC		 304 wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
305 "frame (action=%d, intval=%d)",
306 wnmsleep_ie->action_type, wnmsleep_ie->intval);
df80a0cc 307 if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
74b4a360
JM		 308 wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
309 tfsresp_ie_end);
df80a0cc 310 } else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
74b4a360 311 wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
75cad1a0
XC		 312 }
313 } else {
314 wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
315 "(action=%d, intval=%d)",
316 wnmsleep_ie->action_type, wnmsleep_ie->intval);
df80a0cc 317 if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
75cad1a0
XC		 318 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
319 wpa_s->bssid, NULL, NULL);
df80a0cc 320 else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
75cad1a0
XC		 321 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
322 wpa_s->bssid, NULL, NULL);
323 }
324}
325
326
e27d20bb
VK		 327void wnm_deallocate_memory(struct wpa_supplicant *wpa_s)
328{
329 int i;
330
331 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
e27d20bb 332 os_free(wpa_s->wnm_neighbor_report_elements[i].meas_pilot);
e27d20bb
VK		 333 os_free(wpa_s->wnm_neighbor_report_elements[i].mul_bssid);
334 }
335
ec331d09 336 wpa_s->wnm_num_neighbor_report = 0;
e27d20bb
VK		 337 os_free(wpa_s->wnm_neighbor_report_elements);
338 wpa_s->wnm_neighbor_report_elements = NULL;
339}
340
341
342static void wnm_parse_neighbor_report_elem(struct neighbor_report *rep,
343 u8 id, u8 elen, const u8 *pos)
344{
345 switch (id) {
346 case WNM_NEIGHBOR_TSF:
347 if (elen < 2 + 2) {
348 wpa_printf(MSG_DEBUG, "WNM: Too short TSF");
349 break;
350 }
09322678
JM		 351 rep->tsf_offset = WPA_GET_LE16(pos);
352 rep->beacon_int = WPA_GET_LE16(pos + 2);
353 rep->tsf_present = 1;
e27d20bb
VK		 354 break;
355 case WNM_NEIGHBOR_CONDENSED_COUNTRY_STRING:
356 if (elen < 2) {
357 wpa_printf(MSG_DEBUG, "WNM: Too short condensed "
358 "country string");
359 break;
360 }
09322678
JM		 361 os_memcpy(rep->country, pos, 2);
362 rep->country_present = 1;
e27d20bb
VK		 363 break;
364 case WNM_NEIGHBOR_BSS_TRANSITION_CANDIDATE:
365 if (elen < 1) {
366 wpa_printf(MSG_DEBUG, "WNM: Too short BSS transition "
367 "candidate");
368 break;
369 }
09322678
JM		 370 rep->preference = pos[0];
371 rep->preference_present = 1;
e27d20bb
VK		 372 break;
373 case WNM_NEIGHBOR_BSS_TERMINATION_DURATION:
09322678
JM		 374 rep->bss_term_tsf = WPA_GET_LE64(pos);
375 rep->bss_term_dur = WPA_GET_LE16(pos + 8);
376 rep->bss_term_present = 1;
e27d20bb
VK		 377 break;
378 case WNM_NEIGHBOR_BEARING:
379 if (elen < 8) {
380 wpa_printf(MSG_DEBUG, "WNM: Too short neighbor "
381 "bearing");
382 break;
383 }
09322678
JM		 384 rep->bearing = WPA_GET_LE16(pos);
385 rep->distance = WPA_GET_LE32(pos + 2);
386 rep->rel_height = WPA_GET_LE16(pos + 2 + 4);
387 rep->bearing_present = 1;
e27d20bb
VK		 388 break;
389 case WNM_NEIGHBOR_MEASUREMENT_PILOT:
f6ce70dc 390 if (elen < 1) {
e27d20bb
VK		 391 wpa_printf(MSG_DEBUG, "WNM: Too short measurement "
392 "pilot");
393 break;
394 }
e9cb7b92 395 os_free(rep->meas_pilot);
e27d20bb
VK		 396 rep->meas_pilot = os_zalloc(sizeof(struct measurement_pilot));
397 if (rep->meas_pilot == NULL)
398 break;
e27d20bb 399 rep->meas_pilot->measurement_pilot = pos[0];
f6ce70dc
JM		 400 rep->meas_pilot->subelem_len = elen - 1;
401 os_memcpy(rep->meas_pilot->subelems, pos + 1, elen - 1);
e27d20bb
VK		 402 break;
403 case WNM_NEIGHBOR_RRM_ENABLED_CAPABILITIES:
f6ce70dc 404 if (elen < 5) {
e27d20bb
VK		 405 wpa_printf(MSG_DEBUG, "WNM: Too short RRM enabled "
406 "capabilities");
407 break;
408 }
09322678
JM		 409 os_memcpy(rep->rm_capab, pos, 5);
410 rep->rm_capab_present = 1;
e27d20bb
VK		 411 break;
412 case WNM_NEIGHBOR_MULTIPLE_BSSID:
f6ce70dc 413 if (elen < 1) {
e27d20bb
VK		 414 wpa_printf(MSG_DEBUG, "WNM: Too short multiple BSSID");
415 break;
416 }
e9cb7b92 417 os_free(rep->mul_bssid);
e27d20bb
VK		 418 rep->mul_bssid = os_zalloc(sizeof(struct multiple_bssid));
419 if (rep->mul_bssid == NULL)
420 break;
e27d20bb 421 rep->mul_bssid->max_bssid_indicator = pos[0];
f6ce70dc
JM		 422 rep->mul_bssid->subelem_len = elen - 1;
423 os_memcpy(rep->mul_bssid->subelems, pos + 1, elen - 1);
e27d20bb
VK		 424 break;
425 }
426}
427
428
e1117c1c
JM		 429static int wnm_nei_get_chan(struct wpa_supplicant *wpa_s, u8 op_class, u8 chan)
430{
158211b2
JM		 431 struct wpa_bss *bss = wpa_s->current_bss;
432 const char *country = NULL;
80ce804e 433 int freq;
158211b2
JM		 434
435 if (bss) {
436 const u8 *elem = wpa_bss_get_ie(bss, WLAN_EID_COUNTRY);
437
438 if (elem && elem[1] >= 2)
439 country = (const char *) (elem + 2);
440 }
441
80ce804e
JM		 442 freq = ieee80211_chan_to_freq(country, op_class, chan);
443 if (freq <= 0 && op_class == 0) {
444 /*
445 * Some APs do not advertise correct operating class
446 * information. Try to determine the most likely operating
447 * frequency based on the channel number.
448 */
449 if (chan >= 1 && chan <= 13)
450 freq = 2407 + chan * 5;
451 else if (chan == 14)
452 freq = 2484;
453 else if (chan >= 36 && chan <= 169)
454 freq = 5000 + chan * 5;
455 }
456 return freq;
e1117c1c
JM		 457}
458
459
e27d20bb
VK		 460static void wnm_parse_neighbor_report(struct wpa_supplicant *wpa_s,
461 const u8 *pos, u8 len,
462 struct neighbor_report *rep)
463{
464 u8 left = len;
465
466 if (left < 13) {
467 wpa_printf(MSG_DEBUG, "WNM: Too short neighbor report");
468 return;
469 }
470
471 os_memcpy(rep->bssid, pos, ETH_ALEN);
4c381f0d 472 rep->bssid_info = WPA_GET_LE32(pos + ETH_ALEN);
e27d20bb
VK		 473 rep->regulatory_class = *(pos + 10);
474 rep->channel_number = *(pos + 11);
475 rep->phy_type = *(pos + 12);
476
477 pos += 13;
478 left -= 13;
479
480 while (left >= 2) {
481 u8 id, elen;
482
483 id = *pos++;
484 elen = *pos++;
1aa6f953
JM		 485 wpa_printf(MSG_DEBUG, "WNM: Subelement id=%u len=%u", id, elen);
486 left -= 2;
487 if (elen > left) {
488 wpa_printf(MSG_DEBUG,
489 "WNM: Truncated neighbor report subelement");
490 break;
491 }
e27d20bb 492 wnm_parse_neighbor_report_elem(rep, id, elen, pos);
1aa6f953 493 left -= elen;
e27d20bb
VK		 494 pos += elen;
495 }
e1117c1c
JM		 496
497 rep->freq = wnm_nei_get_chan(wpa_s, rep->regulatory_class,
498 rep->channel_number);
e27d20bb
VK		 499}
500
501
af8bc24d
KV		 502static void wnm_clear_acceptable(struct wpa_supplicant *wpa_s)
503{
504 unsigned int i;
505
506 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++)
507 wpa_s->wnm_neighbor_report_elements[i].acceptable = 0;
508}
509
510
511static struct wpa_bss * get_first_acceptable(struct wpa_supplicant *wpa_s)
512{
513 unsigned int i;
514 struct neighbor_report *nei;
515
516 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
517 nei = &wpa_s->wnm_neighbor_report_elements[i];
518 if (nei->acceptable)
519 return wpa_bss_get_bssid(wpa_s, nei->bssid);
520 }
521
522 return NULL;
523}
524
525
526#ifdef CONFIG_MBO
d0b9ab69 527static struct wpa_bss *
af8bc24d
KV		 528get_mbo_transition_candidate(struct wpa_supplicant *wpa_s,
529 enum mbo_transition_reject_reason *reason)
e27d20bb 530{
af8bc24d
KV		 531 struct wpa_bss *target = NULL;
532 struct wpa_bss_trans_info params;
533 struct wpa_bss_candidate_info *info = NULL;
534 struct neighbor_report *nei = wpa_s->wnm_neighbor_report_elements;
535 u8 *first_candidate_bssid = NULL, *pos;
536 unsigned int i;
537
538 params.mbo_transition_reason = wpa_s->wnm_mbo_transition_reason;
539 params.n_candidates = 0;
540 params.bssid = os_calloc(wpa_s->wnm_num_neighbor_report, ETH_ALEN);
541 if (!params.bssid)
542 return NULL;
543
544 pos = params.bssid;
545 for (i = 0; i < wpa_s->wnm_num_neighbor_report; nei++, i++) {
546 if (nei->is_first)
547 first_candidate_bssid = nei->bssid;
548 if (!nei->acceptable)
549 continue;
550 os_memcpy(pos, nei->bssid, ETH_ALEN);
551 pos += ETH_ALEN;
552 params.n_candidates++;
553 }
554
555 if (!params.n_candidates)
556 goto end;
557
558 info = wpa_drv_get_bss_trans_status(wpa_s, &params);
559 if (!info) {
560 /* If failed to get candidate BSS transition status from driver,
561 * get the first acceptable candidate from wpa_supplicant.
562 */
563 target = wpa_bss_get_bssid(wpa_s, params.bssid);
564 goto end;
565 }
566
567 /* Get the first acceptable candidate from driver */
568 for (i = 0; i < info->num; i++) {
569 if (info->candidates[i].is_accept) {
570 target = wpa_bss_get_bssid(wpa_s,
571 info->candidates[i].bssid);
572 goto end;
573 }
574 }
575
576 /* If Disassociation Imminent is set and driver rejects all the
577 * candidate select first acceptable candidate which has
578 * rssi > disassoc_imminent_rssi_threshold
579 */
580 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_DISASSOC_IMMINENT) {
581 for (i = 0; i < info->num; i++) {
582 target = wpa_bss_get_bssid(wpa_s,
583 info->candidates[i].bssid);
584 if (target->level <
585 wpa_s->conf->disassoc_imminent_rssi_threshold)
586 continue;
587 goto end;
588 }
589 }
590
591 /* While sending BTM reject use reason code of the first candidate
592 * received in BTM request frame
593 */
594 if (reason) {
595 for (i = 0; i < info->num; i++) {
596 if (first_candidate_bssid &&
597 os_memcmp(first_candidate_bssid,
598 info->candidates[i].bssid, ETH_ALEN) == 0)
599 {
600 *reason = info->candidates[i].reject_reason;
601 break;
602 }
603 }
604 }
605
606 target = NULL;
e27d20bb 607
af8bc24d
KV		 608end:
609 os_free(params.bssid);
610 if (info) {
611 os_free(info->candidates);
612 os_free(info);
613 }
614 return target;
615}
616#endif /* CONFIG_MBO */
617
618
619static struct wpa_bss *
620compare_scan_neighbor_results(struct wpa_supplicant *wpa_s, os_time_t age_secs,
621 enum mbo_transition_reject_reason *reason)
622{
d0b9ab69 623 u8 i;
027454d2 624 struct wpa_bss *bss = wpa_s->current_bss;
d0b9ab69 625 struct wpa_bss *target;
e27d20bb 626
d0b9ab69 627 if (!bss)
9e080bf3 628 return NULL;
e27d20bb 629
3c1060ff 630 wpa_printf(MSG_DEBUG, "WNM: Current BSS " MACSTR " RSSI %d",
027454d2 631 MAC2STR(wpa_s->bssid), bss->level);
3c1060ff 632
af8bc24d
KV		 633 wnm_clear_acceptable(wpa_s);
634
d0b9ab69
JM		 635 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
636 struct neighbor_report *nei;
027454d2 637
d0b9ab69 638 nei = &wpa_s->wnm_neighbor_report_elements[i];
027454d2
JM		 639 if (nei->preference_present && nei->preference == 0) {
640 wpa_printf(MSG_DEBUG, "Skip excluded BSS " MACSTR,
641 MAC2STR(nei->bssid));
642 continue;
643 }
644
d0b9ab69
JM		 645 target = wpa_bss_get_bssid(wpa_s, nei->bssid);
646 if (!target) {
027454d2
JM		 647 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
648 " (pref %d) not found in scan results",
649 MAC2STR(nei->bssid),
650 nei->preference_present ? nei->preference :
651 -1);
652 continue;
653 }
654
2f195639
KV		 655 if (age_secs) {
656 struct os_reltime now;
657
658 if (os_get_reltime(&now) == 0 &&
659 os_reltime_expired(&now, &target->last_update,
660 age_secs)) {
661 wpa_printf(MSG_DEBUG,
662 "Candidate BSS is more than %ld seconds old",
663 age_secs);
664 continue;
665 }
666 }
667
d0b9ab69
JM		 668 if (bss->ssid_len != target->ssid_len ||
669 os_memcmp(bss->ssid, target->ssid, bss->ssid_len) != 0) {
027454d2
JM		 670 /*
671 * TODO: Could consider allowing transition to another
672 * ESS if PMF was enabled for the association.
673 */
674 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
675 " (pref %d) in different ESS",
676 MAC2STR(nei->bssid),
677 nei->preference_present ? nei->preference :
678 -1);
679 continue;
680 }
681
cbc3d6fe
JM		 682 if (wpa_s->current_ssid &&
683 !wpa_scan_res_match(wpa_s, 0, target, wpa_s->current_ssid,
e65a87b3 684 1, 0)) {
cbc3d6fe
JM		 685 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
686 " (pref %d) does not match the current network profile",
687 MAC2STR(nei->bssid),
688 nei->preference_present ? nei->preference :
689 -1);
690 continue;
691 }
692
dd599908
AS		 693 if (wpa_is_bss_tmp_disallowed(wpa_s, target->bssid)) {
694 wpa_printf(MSG_DEBUG,
695 "MBO: Candidate BSS " MACSTR
696 " retry delay is not over yet",
697 MAC2STR(nei->bssid));
698 continue;
699 }
700
d0b9ab69 701 if (target->level < bss->level && target->level < -80) {
027454d2
JM		 702 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
703 " (pref %d) does not have sufficient signal level (%d)",
704 MAC2STR(nei->bssid),
705 nei->preference_present ? nei->preference :
706 -1,
d0b9ab69 707 target->level);
027454d2
JM		 708 continue;
709 }
710
af8bc24d
KV		 711 nei->acceptable = 1;
712 }
713
714#ifdef CONFIG_MBO
715 if (wpa_s->wnm_mbo_trans_reason_present)
716 target = get_mbo_transition_candidate(wpa_s, reason);
717 else
718 target = get_first_acceptable(wpa_s);
719#else /* CONFIG_MBO */
720 target = get_first_acceptable(wpa_s);
721#endif /* CONFIG_MBO */
722
723 if (target) {
027454d2 724 wpa_printf(MSG_DEBUG,
d0b9ab69 725 "WNM: Found an acceptable preferred transition candidate BSS "
027454d2 726 MACSTR " (RSSI %d)",
af8bc24d 727 MAC2STR(target->bssid), target->level);
e27d20bb
VK		 728 }
729
af8bc24d 730 return target;
e27d20bb
VK		 731}
732
733
84d1c0fd
AS		 734static int wpa_bss_ies_eq(struct wpa_bss *a, struct wpa_bss *b, u8 eid)
735{
736 const u8 *ie_a, *ie_b;
737
738 if (!a || !b)
739 return 0;
740
741 ie_a = wpa_bss_get_ie(a, eid);
742 ie_b = wpa_bss_get_ie(b, eid);
743
744 if (!ie_a || !ie_b || ie_a[1] != ie_b[1])
745 return 0;
746
747 return os_memcmp(ie_a, ie_b, ie_a[1]) == 0;
748}
749
750
751static u32 wnm_get_bss_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
752{
753 u32 info = 0;
754
755 info |= NEI_REP_BSSID_INFO_AP_UNKNOWN_REACH;
756
757 /*
758 * Leave the security and key scope bits unset to indicate that the
759 * security information is not available.
760 */
761
762 if (bss->caps & WLAN_CAPABILITY_SPECTRUM_MGMT)
763 info |= NEI_REP_BSSID_INFO_SPECTRUM_MGMT;
764 if (bss->caps & WLAN_CAPABILITY_QOS)
765 info |= NEI_REP_BSSID_INFO_QOS;
766 if (bss->caps & WLAN_CAPABILITY_APSD)
767 info |= NEI_REP_BSSID_INFO_APSD;
768 if (bss->caps & WLAN_CAPABILITY_RADIO_MEASUREMENT)
769 info |= NEI_REP_BSSID_INFO_RM;
770 if (bss->caps & WLAN_CAPABILITY_DELAYED_BLOCK_ACK)
771 info |= NEI_REP_BSSID_INFO_DELAYED_BA;
772 if (bss->caps & WLAN_CAPABILITY_IMM_BLOCK_ACK)
773 info |= NEI_REP_BSSID_INFO_IMM_BA;
774 if (wpa_bss_ies_eq(bss, wpa_s->current_bss, WLAN_EID_MOBILITY_DOMAIN))
775 info |= NEI_REP_BSSID_INFO_MOBILITY_DOMAIN;
776 if (wpa_bss_ies_eq(bss, wpa_s->current_bss, WLAN_EID_HT_CAP))
777 info |= NEI_REP_BSSID_INFO_HT;
778
779 return info;
780}
781
782
783static int wnm_add_nei_rep(u8 *buf, size_t len, const u8 *bssid, u32 bss_info,
784 u8 op_class, u8 chan, u8 phy_type, u8 pref)
785{
786 u8 *pos = buf;
787
788 if (len < 18) {
789 wpa_printf(MSG_DEBUG,
790 "WNM: Not enough room for Neighbor Report element");
791 return -1;
792 }
793
794 *pos++ = WLAN_EID_NEIGHBOR_REPORT;
795 /* length: 13 for basic neighbor report + 3 for preference subelement */
796 *pos++ = 16;
797 os_memcpy(pos, bssid, ETH_ALEN);
798 pos += ETH_ALEN;
799 WPA_PUT_LE32(pos, bss_info);
800 pos += 4;
801 *pos++ = op_class;
802 *pos++ = chan;
803 *pos++ = phy_type;
804 *pos++ = WNM_NEIGHBOR_BSS_TRANSITION_CANDIDATE;
805 *pos++ = 1;
806 *pos++ = pref;
807 return pos - buf;
808}
809
810
811static int wnm_nei_rep_add_bss(struct wpa_supplicant *wpa_s,
812 struct wpa_bss *bss, u8 *buf, size_t len,
813 u8 pref)
814{
815 const u8 *ie;
816 u8 op_class, chan;
817 int sec_chan = 0, vht = 0;
818 enum phy_type phy_type;
819 u32 info;
820 struct ieee80211_ht_operation *ht_oper = NULL;
821 struct ieee80211_vht_operation *vht_oper = NULL;
822
823 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_OPERATION);
824 if (ie && ie[1] >= 2) {
825 ht_oper = (struct ieee80211_ht_operation *) (ie + 2);
826
827 if (ht_oper->ht_param & HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
828 sec_chan = 1;
829 else if (ht_oper->ht_param &
830 HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
831 sec_chan = -1;
832 }
833
834 ie = wpa_bss_get_ie(bss, WLAN_EID_VHT_OPERATION);
835 if (ie && ie[1] >= 1) {
836 vht_oper = (struct ieee80211_vht_operation *) (ie + 2);
837
838 if (vht_oper->vht_op_info_chwidth == VHT_CHANWIDTH_80MHZ ||
839 vht_oper->vht_op_info_chwidth == VHT_CHANWIDTH_160MHZ ||
840 vht_oper->vht_op_info_chwidth == VHT_CHANWIDTH_80P80MHZ)
841 vht = vht_oper->vht_op_info_chwidth;
842 }
843
844 if (ieee80211_freq_to_channel_ext(bss->freq, sec_chan, vht, &op_class,
845 &chan) == NUM_HOSTAPD_MODES) {
846 wpa_printf(MSG_DEBUG,
847 "WNM: Cannot determine operating class and channel");
848 return -2;
849 }
850
851 phy_type = ieee80211_get_phy_type(bss->freq, (ht_oper != NULL),
852 (vht_oper != NULL));
853 if (phy_type == PHY_TYPE_UNSPECIFIED) {
854 wpa_printf(MSG_DEBUG,
855 "WNM: Cannot determine BSS phy type for Neighbor Report");
856 return -2;
857 }
858
859 info = wnm_get_bss_info(wpa_s, bss);
860
861 return wnm_add_nei_rep(buf, len, bss->bssid, info, op_class, chan,
862 phy_type, pref);
863}
864
865
866static int wnm_add_cand_list(struct wpa_supplicant *wpa_s, u8 *buf, size_t len)
867{
868 u8 *pos = buf;
869 unsigned int i, pref = 255;
870 struct os_reltime now;
871 struct wpa_ssid *ssid = wpa_s->current_ssid;
872
873 if (!ssid)
874 return 0;
875
876 /*
877 * TODO: Define when scan results are no longer valid for the candidate
878 * list.
879 */
880 os_get_reltime(&now);
881 if (os_reltime_expired(&now, &wpa_s->last_scan, 10))
882 return 0;
883
884 wpa_printf(MSG_DEBUG,
885 "WNM: Add candidate list to BSS Transition Management Response frame");
886 for (i = 0; i < wpa_s->last_scan_res_used && pref; i++) {
887 struct wpa_bss *bss = wpa_s->last_scan_res[i];
888 int res;
889
e65a87b3 890 if (wpa_scan_res_match(wpa_s, i, bss, ssid, 1, 0)) {
84d1c0fd
AS		 891 res = wnm_nei_rep_add_bss(wpa_s, bss, pos, len, pref--);
892 if (res == -2)
893 continue; /* could not build entry for BSS */
894 if (res < 0)
895 break; /* no more room for candidates */
896 if (pref == 1)
897 break;
898
899 pos += res;
900 len -= res;
901 }
902 }
903
904 wpa_hexdump(MSG_DEBUG,
905 "WNM: BSS Transition Management Response candidate list",
906 buf, pos - buf);
907
908 return pos - buf;
909}
910
911
7b53acd3
JM		 912static void wnm_send_bss_transition_mgmt_resp(
913 struct wpa_supplicant *wpa_s, u8 dialog_token,
af8bc24d
KV		 914 enum bss_trans_mgmt_status_code status,
915 enum mbo_transition_reject_reason reason,
916 u8 delay, const u8 *target_bssid)
2049a875 917{
84d1c0fd 918 u8 buf[2000], *pos;
2049a875
JM		 919 struct ieee80211_mgmt *mgmt;
920 size_t len;
f5f3728a 921 int res;
2049a875 922
af8bc24d
KV		 923 wpa_printf(MSG_DEBUG,
924 "WNM: Send BSS Transition Management Response to " MACSTR
925 " dialog_token=%u status=%u reason=%u delay=%d",
926 MAC2STR(wpa_s->bssid), dialog_token, status, reason, delay);
d0b9ab69
JM		 927 if (!wpa_s->current_bss) {
928 wpa_printf(MSG_DEBUG,
929 "WNM: Current BSS not known - drop response");
930 return;
931 }
2049a875
JM		 932
933 mgmt = (struct ieee80211_mgmt *) buf;
934 os_memset(&buf, 0, sizeof(buf));
935 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
936 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
937 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
938 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
939 WLAN_FC_STYPE_ACTION);
940 mgmt->u.action.category = WLAN_ACTION_WNM;
941 mgmt->u.action.u.bss_tm_resp.action = WNM_BSS_TRANS_MGMT_RESP;
942 mgmt->u.action.u.bss_tm_resp.dialog_token = dialog_token;
943 mgmt->u.action.u.bss_tm_resp.status_code = status;
944 mgmt->u.action.u.bss_tm_resp.bss_termination_delay = delay;
945 pos = mgmt->u.action.u.bss_tm_resp.variable;
946 if (target_bssid) {
947 os_memcpy(pos, target_bssid, ETH_ALEN);
948 pos += ETH_ALEN;
2cd0f6a4
JM		 949 } else if (status == WNM_BSS_TM_ACCEPT) {
950 /*
951 * P802.11-REVmc clarifies that the Target BSSID field is always
952 * present when status code is zero, so use a fake value here if
953 * no BSSID is yet known.
954 */
955 os_memset(pos, 0, ETH_ALEN);
956 pos += ETH_ALEN;
2049a875
JM		 957 }
958
84d1c0fd
AS		 959 if (status == WNM_BSS_TM_ACCEPT)
960 pos += wnm_add_cand_list(wpa_s, pos, buf + sizeof(buf) - pos);
961
c8082d2b 962#ifdef CONFIG_MBO
af8bc24d
KV		 963 if (status != WNM_BSS_TM_ACCEPT &&
964 wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) {
c8082d2b 965 pos += wpas_mbo_ie_bss_trans_reject(
af8bc24d 966 wpa_s, pos, buf + sizeof(buf) - pos, reason);
c8082d2b
AS		 967 }
968#endif /* CONFIG_MBO */
969
2049a875
JM		 970 len = pos - (u8 *) &mgmt->u.action.category;
971
f5f3728a
JM		 972 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
973 wpa_s->own_addr, wpa_s->bssid,
974 &mgmt->u.action.category, len, 0);
975 if (res < 0) {
976 wpa_printf(MSG_DEBUG,
977 "WNM: Failed to send BSS Transition Management Response");
978 }
2049a875
JM		 979}
980
981
2f195639
KV		 982static void wnm_bss_tm_connect(struct wpa_supplicant *wpa_s,
983 struct wpa_bss *bss, struct wpa_ssid *ssid,
984 int after_new_scan)
985{
986 wpa_dbg(wpa_s, MSG_DEBUG,
987 "WNM: Transition to BSS " MACSTR
988 " based on BSS Transition Management Request (old BSSID "
989 MACSTR " after_new_scan=%d)",
990 MAC2STR(bss->bssid), MAC2STR(wpa_s->bssid), after_new_scan);
991
992 /* Send the BSS Management Response - Accept */
993 if (wpa_s->wnm_reply) {
994 wpa_s->wnm_reply = 0;
995 wpa_printf(MSG_DEBUG,
996 "WNM: Sending successful BSS Transition Management Response");
af8bc24d
KV		 997 wnm_send_bss_transition_mgmt_resp(
998 wpa_s, wpa_s->wnm_dialog_token, WNM_BSS_TM_ACCEPT,
999 MBO_TRANSITION_REASON_UNSPECIFIED, 0, bss->bssid);
2f195639
KV		 1000 }
1001
1002 if (bss == wpa_s->current_bss) {
1003 wpa_printf(MSG_DEBUG,
1004 "WNM: Already associated with the preferred candidate");
1005 wnm_deallocate_memory(wpa_s);
1006 return;
1007 }
1008
1009 wpa_s->reassociate = 1;
1010 wpa_printf(MSG_DEBUG, "WNM: Issuing connect");
1011 wpa_supplicant_connect(wpa_s, bss, ssid);
1012 wnm_deallocate_memory(wpa_s);
1013}
1014
1015
75d65857 1016int wnm_scan_process(struct wpa_supplicant *wpa_s, int reply_on_fail)
e27d20bb 1017{
d0b9ab69
JM		 1018 struct wpa_bss *bss;
1019 struct wpa_ssid *ssid = wpa_s->current_ssid;
1020 enum bss_trans_mgmt_status_code status = WNM_BSS_TM_REJECT_UNSPECIFIED;
af8bc24d
KV		 1021 enum mbo_transition_reject_reason reason =
1022 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED;
e27d20bb 1023
d0b9ab69
JM		 1024 if (!wpa_s->wnm_neighbor_report_elements)
1025 return 0;
1026
2f195639
KV		 1027 wpa_dbg(wpa_s, MSG_DEBUG,
1028 "WNM: Process scan results for BSS Transition Management");
d0b9ab69
JM		 1029 if (os_reltime_before(&wpa_s->wnm_cand_valid_until,
1030 &wpa_s->scan_trigger_time)) {
1031 wpa_printf(MSG_DEBUG, "WNM: Previously stored BSS transition candidate list is not valid anymore - drop it");
1032 wnm_deallocate_memory(wpa_s);
1033 return 0;
1034 }
1035
1036 if (!wpa_s->current_bss ||
1037 os_memcmp(wpa_s->wnm_cand_from_bss, wpa_s->current_bss->bssid,
1038 ETH_ALEN) != 0) {
1039 wpa_printf(MSG_DEBUG, "WNM: Stored BSS transition candidate list not from the current BSS - ignore it");
1040 return 0;
e27d20bb
VK		 1041 }
1042
1043 /* Compare the Neighbor Report and scan results */
af8bc24d 1044 bss = compare_scan_neighbor_results(wpa_s, 0, &reason);
d0b9ab69
JM		 1045 if (!bss) {
1046 wpa_printf(MSG_DEBUG, "WNM: No BSS transition candidate match found");
1047 status = WNM_BSS_TM_REJECT_NO_SUITABLE_CANDIDATES;
1048 goto send_bss_resp_fail;
1049 }
e27d20bb 1050
d0b9ab69 1051 /* Associate to the network */
2f195639 1052 wnm_bss_tm_connect(wpa_s, bss, ssid, 1);
d0b9ab69
JM		 1053 return 1;
1054
e27d20bb 1055send_bss_resp_fail:
75d65857
JM		 1056 if (!reply_on_fail)
1057 return 0;
1058
1059 /* Send reject response for all the failures */
1060
e27d20bb 1061 if (wpa_s->wnm_reply) {
d0b9ab69 1062 wpa_s->wnm_reply = 0;
e27d20bb
VK		 1063 wnm_send_bss_transition_mgmt_resp(wpa_s,
1064 wpa_s->wnm_dialog_token,
af8bc24d 1065 status, reason, 0, NULL);
e27d20bb 1066 }
d0b9ab69
JM		 1067 wnm_deallocate_memory(wpa_s);
1068
1069 return 0;
e27d20bb
VK		 1070}
1071
1072
ff2c5758
JM		 1073static int cand_pref_compar(const void *a, const void *b)
1074{
1075 const struct neighbor_report *aa = a;
1076 const struct neighbor_report *bb = b;
1077
1078 if (!aa->preference_present && !bb->preference_present)
1079 return 0;
1080 if (!aa->preference_present)
1081 return 1;
1082 if (!bb->preference_present)
1083 return -1;
1084 if (bb->preference > aa->preference)
1085 return 1;
1086 if (bb->preference < aa->preference)
1087 return -1;
1088 return 0;
1089}
1090
1091
1092static void wnm_sort_cand_list(struct wpa_supplicant *wpa_s)
1093{
1094 if (!wpa_s->wnm_neighbor_report_elements)
1095 return;
1096 qsort(wpa_s->wnm_neighbor_report_elements,
1097 wpa_s->wnm_num_neighbor_report, sizeof(struct neighbor_report),
1098 cand_pref_compar);
1099}
1100
1101
8040dc53
JM		 1102static void wnm_dump_cand_list(struct wpa_supplicant *wpa_s)
1103{
1104 unsigned int i;
1105
1106 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Candidate List");
1107 if (!wpa_s->wnm_neighbor_report_elements)
1108 return;
1109 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1110 struct neighbor_report *nei;
1111
1112 nei = &wpa_s->wnm_neighbor_report_elements[i];
1113 wpa_printf(MSG_DEBUG, "%u: " MACSTR
e1117c1c 1114 " info=0x%x op_class=%u chan=%u phy=%u pref=%d freq=%d",
4c381f0d
JM		 1115 i, MAC2STR(nei->bssid), nei->bssid_info,
1116 nei->regulatory_class,
8040dc53 1117 nei->channel_number, nei->phy_type,
e1117c1c
JM		 1118 nei->preference_present ? nei->preference : -1,
1119 nei->freq);
1120 }
1121}
1122
1123
1124static int chan_supported(struct wpa_supplicant *wpa_s, int freq)
1125{
1126 unsigned int i;
1127
1128 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1129 struct hostapd_hw_modes *mode = &wpa_s->hw.modes[i];
1130 int j;
1131
1132 for (j = 0; j < mode->num_channels; j++) {
1133 struct hostapd_channel_data *chan;
1134
1135 chan = &mode->channels[j];
1136 if (chan->freq == freq &&
1137 !(chan->flag & HOSTAPD_CHAN_DISABLED))
1138 return 1;
1139 }
1140 }
1141
1142 return 0;
1143}
1144
1145
1146static void wnm_set_scan_freqs(struct wpa_supplicant *wpa_s)
1147{
1148 int *freqs;
1149 int num_freqs = 0;
1150 unsigned int i;
1151
1152 if (!wpa_s->wnm_neighbor_report_elements)
1153 return;
1154
1155 if (wpa_s->hw.modes == NULL)
1156 return;
1157
1158 os_free(wpa_s->next_scan_freqs);
1159 wpa_s->next_scan_freqs = NULL;
1160
1161 freqs = os_calloc(wpa_s->wnm_num_neighbor_report + 1, sizeof(int));
1162 if (freqs == NULL)
1163 return;
1164
1165 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1166 struct neighbor_report *nei;
1167
1168 nei = &wpa_s->wnm_neighbor_report_elements[i];
1169 if (nei->freq <= 0) {
1170 wpa_printf(MSG_DEBUG,
1171 "WNM: Unknown neighbor operating frequency for "
1172 MACSTR " - scan all channels",
1173 MAC2STR(nei->bssid));
1174 os_free(freqs);
1175 return;
1176 }
1177 if (chan_supported(wpa_s, nei->freq))
1178 add_freq(freqs, &num_freqs, nei->freq);
8040dc53 1179 }
e1117c1c
JM		 1180
1181 if (num_freqs == 0) {
1182 os_free(freqs);
1183 return;
1184 }
1185
1186 wpa_printf(MSG_DEBUG,
1187 "WNM: Scan %d frequencies based on transition candidate list",
1188 num_freqs);
1189 wpa_s->next_scan_freqs = freqs;
8040dc53
JM		 1190}
1191
1192
2f195639
KV		 1193static int wnm_fetch_scan_results(struct wpa_supplicant *wpa_s)
1194{
1195 struct wpa_scan_results *scan_res;
1196 struct wpa_bss *bss;
1197 struct wpa_ssid *ssid = wpa_s->current_ssid;
1198 u8 i, found = 0;
1199 size_t j;
1200
1201 wpa_dbg(wpa_s, MSG_DEBUG,
1202 "WNM: Fetch current scan results from the driver for checking transition candidates");
1203 scan_res = wpa_drv_get_scan_results2(wpa_s);
1204 if (!scan_res) {
1205 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Failed to get scan results");
1206 return 0;
1207 }
1208
1209 if (scan_res->fetch_time.sec == 0)
1210 os_get_reltime(&scan_res->fetch_time);
1211
1212 filter_scan_res(wpa_s, scan_res);
1213
1214 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1215 struct neighbor_report *nei;
1216
1217 nei = &wpa_s->wnm_neighbor_report_elements[i];
1218 if (nei->preference_present && nei->preference == 0)
1219 continue;
1220
1221 for (j = 0; j < scan_res->num; j++) {
1222 struct wpa_scan_res *res;
1223 const u8 *ssid_ie;
1224
1225 res = scan_res->res[j];
1226 if (os_memcmp(nei->bssid, res->bssid, ETH_ALEN) != 0 ||
1227 res->age > WNM_SCAN_RESULT_AGE * 1000)
1228 continue;
1229 bss = wpa_s->current_bss;
1230 ssid_ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
1231 if (bss && ssid_ie &&
1232 (bss->ssid_len != ssid_ie[1] ||
1233 os_memcmp(bss->ssid, ssid_ie + 2,
1234 bss->ssid_len) != 0))
1235 continue;
1236
1237 /* Potential candidate found */
1238 found = 1;
1239 scan_snr(res);
1240 scan_est_throughput(wpa_s, res);
1241 wpa_bss_update_scan_res(wpa_s, res,
1242 &scan_res->fetch_time);
1243 }
1244 }
1245
1246 wpa_scan_results_free(scan_res);
1247 if (!found) {
1248 wpa_dbg(wpa_s, MSG_DEBUG,
1249 "WNM: No transition candidate matches existing scan results");
1250 return 0;
1251 }
1252
af8bc24d 1253 bss = compare_scan_neighbor_results(wpa_s, WNM_SCAN_RESULT_AGE, NULL);
2f195639
KV		 1254 if (!bss) {
1255 wpa_dbg(wpa_s, MSG_DEBUG,
1256 "WNM: Comparison of scan results against transition candidates did not find matches");
1257 return 0;
1258 }
1259
1260 /* Associate to the network */
1261 wnm_bss_tm_connect(wpa_s, bss, ssid, 0);
1262 return 1;
1263}
1264
1265
2049a875
JM		 1266static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
1267 const u8 *pos, const u8 *end,
1268 int reply)
1269{
8c9af762
JM		 1270 unsigned int beacon_int;
1271 u8 valid_int;
dd599908
AS		 1272#ifdef CONFIG_MBO
1273 const u8 *vendor;
1274#endif /* CONFIG_MBO */
8c9af762 1275
bdce45b8 1276 if (end - pos < 5)
2049a875
JM		 1277 return;
1278
af8bc24d
KV		 1279#ifdef CONFIG_MBO
1280 wpa_s->wnm_mbo_trans_reason_present = 0;
1281 wpa_s->wnm_mbo_transition_reason = 0;
1282#endif /* CONFIG_MBO */
1283
8c9af762
JM		 1284 if (wpa_s->current_bss)
1285 beacon_int = wpa_s->current_bss->beacon_int;
1286 else
1287 beacon_int = 100; /* best guess */
1288
e27d20bb
VK		 1289 wpa_s->wnm_dialog_token = pos[0];
1290 wpa_s->wnm_mode = pos[1];
1291 wpa_s->wnm_dissoc_timer = WPA_GET_LE16(pos + 2);
8c9af762 1292 valid_int = pos[4];
e27d20bb 1293 wpa_s->wnm_reply = reply;
2049a875
JM		 1294
1295 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management Request: "
1296 "dialog_token=%u request_mode=0x%x "
1297 "disassoc_timer=%u validity_interval=%u",
e27d20bb 1298 wpa_s->wnm_dialog_token, wpa_s->wnm_mode,
8c9af762 1299 wpa_s->wnm_dissoc_timer, valid_int);
e27d20bb 1300
a483c6f1 1301#if defined(CONFIG_MBO) && defined(CONFIG_TESTING_OPTIONS)
1302 if (wpa_s->reject_btm_req_reason) {
1303 wpa_printf(MSG_INFO,
1304 "WNM: Testing - reject BSS Transition Management Request: reject_btm_req_reason=%d",
1305 wpa_s->reject_btm_req_reason);
af8bc24d
KV		 1306 wnm_send_bss_transition_mgmt_resp(
1307 wpa_s, wpa_s->wnm_dialog_token,
1308 wpa_s->reject_btm_req_reason,
1309 MBO_TRANSITION_REASON_UNSPECIFIED, 0, NULL);
a483c6f1 1310 return;
1311 }
1312#endif /* CONFIG_MBO && CONFIG_TESTING_OPTIONS */
1313
2049a875 1314 pos += 5;
e27d20bb 1315
7b53acd3 1316 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) {
bdce45b8 1317 if (end - pos < 12) {
e27d20bb
VK		 1318 wpa_printf(MSG_DEBUG, "WNM: Too short BSS TM Request");
1319 return;
1320 }
1321 os_memcpy(wpa_s->wnm_bss_termination_duration, pos, 12);
2049a875 1322 pos += 12; /* BSS Termination Duration */
e27d20bb
VK		 1323 }
1324
7b53acd3 1325 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT) {
2049a875 1326 char url[256];
ae8535b6 1327
bdce45b8 1328 if (end - pos < 1 || 1 + pos[0] > end - pos) {
2049a875
JM		 1329 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS Transition "
1330 "Management Request (URL)");
1331 return;
1332 }
1333 os_memcpy(url, pos + 1, pos[0]);
1334 url[pos[0]] = '\0';
e27d20bb 1335 pos += 1 + pos[0];
ae8535b6 1336
ae8535b6
JM		 1337 wpa_msg(wpa_s, MSG_INFO, ESS_DISASSOC_IMMINENT "%d %u %s",
1338 wpa_sm_pmf_enabled(wpa_s->wpa),
1339 wpa_s->wnm_dissoc_timer * beacon_int * 128 / 125, url);
2049a875
JM		 1340 }
1341
7b53acd3 1342 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_DISASSOC_IMMINENT) {
2049a875 1343 wpa_msg(wpa_s, MSG_INFO, "WNM: Disassociation Imminent - "
e27d20bb
VK		 1344 "Disassociation Timer %u", wpa_s->wnm_dissoc_timer);
1345 if (wpa_s->wnm_dissoc_timer && !wpa_s->scanning) {
2049a875
JM		 1346 /* TODO: mark current BSS less preferred for
1347 * selection */
1348 wpa_printf(MSG_DEBUG, "Trying to find another BSS");
1349 wpa_supplicant_req_scan(wpa_s, 0, 0);
1350 }
1351 }
1352
dd599908
AS		 1353#ifdef CONFIG_MBO
1354 vendor = get_ie(pos, end - pos, WLAN_EID_VENDOR_SPECIFIC);
1355 if (vendor)
1356 wpas_mbo_ie_trans_req(wpa_s, vendor + 2, vendor[1]);
1357#endif /* CONFIG_MBO */
1358
7b53acd3 1359 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED) {
8c9af762
JM		 1360 unsigned int valid_ms;
1361
e27d20bb 1362 wpa_msg(wpa_s, MSG_INFO, "WNM: Preferred List Available");
279b5486 1363 wnm_deallocate_memory(wpa_s);
faebdeaa
JM		 1364 wpa_s->wnm_neighbor_report_elements = os_calloc(
1365 WNM_MAX_NEIGHBOR_REPORT,
e27d20bb
VK		 1366 sizeof(struct neighbor_report));
1367 if (wpa_s->wnm_neighbor_report_elements == NULL)
1368 return;
1369
bdce45b8 1370 while (end - pos >= 2 &&
e27d20bb
VK		 1371 wpa_s->wnm_num_neighbor_report < WNM_MAX_NEIGHBOR_REPORT)
1372 {
1373 u8 tag = *pos++;
1374 u8 len = *pos++;
1375
1376 wpa_printf(MSG_DEBUG, "WNM: Neighbor report tag %u",
1377 tag);
bdce45b8 1378 if (len > end - pos) {
e27d20bb
VK		 1379 wpa_printf(MSG_DEBUG, "WNM: Truncated request");
1380 return;
1381 }
1aa6f953
JM		 1382 if (tag == WLAN_EID_NEIGHBOR_REPORT) {
1383 struct neighbor_report *rep;
1384 rep = &wpa_s->wnm_neighbor_report_elements[
1385 wpa_s->wnm_num_neighbor_report];
1386 wnm_parse_neighbor_report(wpa_s, pos, len, rep);
f420577f 1387 wpa_s->wnm_num_neighbor_report++;
af8bc24d
KV		 1388#ifdef CONFIG_MBO
1389 if (wpa_s->wnm_mbo_trans_reason_present &&
1390 wpa_s->wnm_num_neighbor_report == 1) {
1391 rep->is_first = 1;
1392 wpa_printf(MSG_DEBUG,
1393 "WNM: First transition candidate is "
1394 MACSTR, MAC2STR(rep->bssid));
1395 }
1396#endif /* CONFIG_MBO */
1aa6f953 1397 }
e27d20bb
VK		 1398
1399 pos += len;
e27d20bb 1400 }
d14e63a2
AS		 1401
1402 if (!wpa_s->wnm_num_neighbor_report) {
1403 wpa_printf(MSG_DEBUG,
1404 "WNM: Candidate list included bit is set, but no candidates found");
1405 wnm_send_bss_transition_mgmt_resp(
1406 wpa_s, wpa_s->wnm_dialog_token,
1407 WNM_BSS_TM_REJECT_NO_SUITABLE_CANDIDATES,
af8bc24d 1408 MBO_TRANSITION_REASON_UNSPECIFIED, 0, NULL);
d14e63a2
AS		 1409 return;
1410 }
1411
ff2c5758 1412 wnm_sort_cand_list(wpa_s);
8040dc53 1413 wnm_dump_cand_list(wpa_s);
8c9af762
JM		 1414 valid_ms = valid_int * beacon_int * 128 / 125;
1415 wpa_printf(MSG_DEBUG, "WNM: Candidate list valid for %u ms",
1416 valid_ms);
1417 os_get_reltime(&wpa_s->wnm_cand_valid_until);
1418 wpa_s->wnm_cand_valid_until.sec += valid_ms / 1000;
1419 wpa_s->wnm_cand_valid_until.usec += (valid_ms % 1000) * 1000;
1420 wpa_s->wnm_cand_valid_until.sec +=
1421 wpa_s->wnm_cand_valid_until.usec / 1000000;
1422 wpa_s->wnm_cand_valid_until.usec %= 1000000;
d0b9ab69 1423 os_memcpy(wpa_s->wnm_cand_from_bss, wpa_s->bssid, ETH_ALEN);
e27d20bb 1424
2f195639
KV		 1425 /*
1426 * Fetch the latest scan results from the kernel and check for
1427 * candidates based on those results first. This can help in
1428 * finding more up-to-date information should the driver has
1429 * done some internal scanning operations after the last scan
1430 * result update in wpa_supplicant.
1431 */
1432 if (wnm_fetch_scan_results(wpa_s) > 0)
1433 return;
1434
1435 /*
1436 * Try to use previously received scan results, if they are
1437 * recent enough to use for a connection.
1438 */
75d65857
JM		 1439 if (wpa_s->last_scan_res_used > 0) {
1440 struct os_reltime now;
1441
1442 os_get_reltime(&now);
1443 if (!os_reltime_expired(&now, &wpa_s->last_scan, 10)) {
1444 wpa_printf(MSG_DEBUG,
1445 "WNM: Try to use recent scan results");
1446 if (wnm_scan_process(wpa_s, 0) > 0)
1447 return;
1448 wpa_printf(MSG_DEBUG,
1449 "WNM: No match in previous scan results - try a new scan");
1450 }
1451 }
1452
e1117c1c 1453 wnm_set_scan_freqs(wpa_s);
0645492e
JM		 1454 if (wpa_s->wnm_num_neighbor_report == 1) {
1455 os_memcpy(wpa_s->next_scan_bssid,
1456 wpa_s->wnm_neighbor_report_elements[0].bssid,
1457 ETH_ALEN);
1458 wpa_printf(MSG_DEBUG,
1459 "WNM: Scan only for a specific BSSID since there is only a single candidate "
1460 MACSTR, MAC2STR(wpa_s->next_scan_bssid));
1461 }
e27d20bb
VK		 1462 wpa_supplicant_req_scan(wpa_s, 0, 0);
1463 } else if (reply) {
6df634fa
JM		 1464 enum bss_trans_mgmt_status_code status;
1465 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT)
1466 status = WNM_BSS_TM_ACCEPT;
1467 else {
1468 wpa_msg(wpa_s, MSG_INFO, "WNM: BSS Transition Management Request did not include candidates");
1469 status = WNM_BSS_TM_REJECT_UNSPECIFIED;
1470 }
af8bc24d
KV		 1471 wnm_send_bss_transition_mgmt_resp(
1472 wpa_s, wpa_s->wnm_dialog_token, status,
1473 MBO_TRANSITION_REASON_UNSPECIFIED, 0, NULL);
2049a875
JM		 1474 }
1475}
1476
1477
65bcd0a9 1478int wnm_send_bss_transition_mgmt_query(struct wpa_supplicant *wpa_s,
9a493fab 1479 u8 query_reason, int cand_list)
65bcd0a9 1480{
9a493fab 1481 u8 buf[2000], *pos;
65bcd0a9
VK		 1482 struct ieee80211_mgmt *mgmt;
1483 size_t len;
1484 int ret;
1485
1486 wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Query to "
9a493fab
AS		 1487 MACSTR " query_reason=%u%s",
1488 MAC2STR(wpa_s->bssid), query_reason,
1489 cand_list ? " candidate list" : "");
65bcd0a9
VK		 1490
1491 mgmt = (struct ieee80211_mgmt *) buf;
1492 os_memset(&buf, 0, sizeof(buf));
1493 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
1494 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1495 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1496 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1497 WLAN_FC_STYPE_ACTION);
1498 mgmt->u.action.category = WLAN_ACTION_WNM;
1499 mgmt->u.action.u.bss_tm_query.action = WNM_BSS_TRANS_MGMT_QUERY;
a8a6a35f 1500 mgmt->u.action.u.bss_tm_query.dialog_token = 1;
65bcd0a9
VK		 1501 mgmt->u.action.u.bss_tm_query.query_reason = query_reason;
1502 pos = mgmt->u.action.u.bss_tm_query.variable;
1503
9a493fab
AS		 1504 if (cand_list)
1505 pos += wnm_add_cand_list(wpa_s, pos, buf + sizeof(buf) - pos);
1506
65bcd0a9
VK		 1507 len = pos - (u8 *) &mgmt->u.action.category;
1508
1509 ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1510 wpa_s->own_addr, wpa_s->bssid,
1511 &mgmt->u.action.category, len, 0);
1512
1513 return ret;
1514}
1515
1516
95a3ea94
JM		 1517static void ieee802_11_rx_wnm_notif_req_wfa(struct wpa_supplicant *wpa_s,
1518 const u8 *sa, const u8 *data,
1519 int len)
1520{
7ef69479 1521 const u8 *pos, *end, *next;
95a3ea94
JM		 1522 u8 ie, ie_len;
1523
1524 pos = data;
1525 end = data + len;
1526
bdce45b8 1527 while (end - pos > 1) {
95a3ea94
JM		 1528 ie = *pos++;
1529 ie_len = *pos++;
1530 wpa_printf(MSG_DEBUG, "WNM: WFA subelement %u len %u",
1531 ie, ie_len);
1532 if (ie_len > end - pos) {
1533 wpa_printf(MSG_DEBUG, "WNM: Not enough room for "
1534 "subelement");
1535 break;
1536 }
7ef69479
JM		 1537 next = pos + ie_len;
1538 if (ie_len < 4) {
1539 pos = next;
1540 continue;
1541 }
1542 wpa_printf(MSG_DEBUG, "WNM: Subelement OUI %06x type %u",
1543 WPA_GET_BE24(pos), pos[3]);
95a3ea94
JM		 1544
1545#ifdef CONFIG_HS20
1546 if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 5 &&
1547 WPA_GET_BE24(pos) == OUI_WFA &&
1548 pos[3] == HS20_WNM_SUB_REM_NEEDED) {
1549 /* Subscription Remediation subelement */
1550 const u8 *ie_end;
1551 u8 url_len;
1552 char *url;
1553 u8 osu_method;
1554
1555 wpa_printf(MSG_DEBUG, "WNM: Subscription Remediation "
1556 "subelement");
1557 ie_end = pos + ie_len;
1558 pos += 4;
1559 url_len = *pos++;
1560 if (url_len == 0) {
1561 wpa_printf(MSG_DEBUG, "WNM: No Server URL included");
1562 url = NULL;
1563 osu_method = 1;
1564 } else {
bdce45b8 1565 if (url_len + 1 > ie_end - pos) {
95a3ea94
JM		 1566 wpa_printf(MSG_DEBUG, "WNM: Not enough room for Server URL (len=%u) and Server Method (left %d)",
1567 url_len,
1568 (int) (ie_end - pos));
1569 break;
1570 }
1571 url = os_malloc(url_len + 1);
1572 if (url == NULL)
1573 break;
1574 os_memcpy(url, pos, url_len);
1575 url[url_len] = '\0';
1576 osu_method = pos[url_len];
1577 }
1578 hs20_rx_subscription_remediation(wpa_s, url,
1579 osu_method);
1580 os_free(url);
7ef69479
JM		 1581 pos = next;
1582 continue;
1583 }
1584
1585 if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 8 &&
1586 WPA_GET_BE24(pos) == OUI_WFA &&
1587 pos[3] == HS20_WNM_DEAUTH_IMMINENT_NOTICE) {
1588 const u8 *ie_end;
1589 u8 url_len;
1590 char *url;
1591 u8 code;
1592 u16 reauth_delay;
1593
1594 ie_end = pos + ie_len;
1595 pos += 4;
1596 code = *pos++;
1597 reauth_delay = WPA_GET_LE16(pos);
1598 pos += 2;
1599 url_len = *pos++;
1600 wpa_printf(MSG_DEBUG, "WNM: HS 2.0 Deauthentication "
1601 "Imminent - Reason Code %u "
1602 "Re-Auth Delay %u URL Length %u",
1603 code, reauth_delay, url_len);
bdce45b8 1604 if (url_len > ie_end - pos)
7ef69479
JM		 1605 break;
1606 url = os_malloc(url_len + 1);
1607 if (url == NULL)
1608 break;
1609 os_memcpy(url, pos, url_len);
1610 url[url_len] = '\0';
1611 hs20_rx_deauth_imminent_notice(wpa_s, code,
1612 reauth_delay, url);
1613 os_free(url);
1614 pos = next;
1615 continue;
95a3ea94
JM		 1616 }
1617#endif /* CONFIG_HS20 */
1618
7ef69479 1619 pos = next;
95a3ea94
JM		 1620 }
1621}
1622
1623
1624static void ieee802_11_rx_wnm_notif_req(struct wpa_supplicant *wpa_s,
1625 const u8 *sa, const u8 *frm, int len)
1626{
1627 const u8 *pos, *end;
1628 u8 dialog_token, type;
1629
1630 /* Dialog Token [1] | Type [1] | Subelements */
1631
1632 if (len < 2 || sa == NULL)
1633 return;
1634 end = frm + len;
1635 pos = frm;
1636 dialog_token = *pos++;
1637 type = *pos++;
1638
1639 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Received WNM-Notification Request "
1640 "(dialog_token %u type %u sa " MACSTR ")",
1641 dialog_token, type, MAC2STR(sa));
1642 wpa_hexdump(MSG_DEBUG, "WNM-Notification Request subelements",
1643 pos, end - pos);
1644
1645 if (wpa_s->wpa_state != WPA_COMPLETED ||
1646 os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) {
1647 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: WNM-Notification frame not "
1648 "from our AP - ignore it");
1649 return;
1650 }
1651
1652 switch (type) {
1653 case 1:
1654 ieee802_11_rx_wnm_notif_req_wfa(wpa_s, sa, pos, end - pos);
1655 break;
1656 default:
1657 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Ignore unknown "
1658 "WNM-Notification type %u", type);
1659 break;
1660 }
1661}
1662
1663
75cad1a0 1664void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
dbfb8e82 1665 const struct ieee80211_mgmt *mgmt, size_t len)
75cad1a0 1666{
27c77751 1667 const u8 *pos, *end;
2049a875 1668 u8 act;
27c77751 1669
dbfb8e82 1670 if (len < IEEE80211_HDRLEN + 2)
27c77751
JM		 1671 return;
1672
2703fb4a 1673 pos = ((const u8 *) mgmt) + IEEE80211_HDRLEN + 1;
27c77751 1674 act = *pos++;
dbfb8e82 1675 end = ((const u8 *) mgmt) + len;
27c77751
JM		 1676
1677 wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
dbfb8e82 1678 act, MAC2STR(mgmt->sa));
2049a875 1679 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
dbfb8e82 1680 os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
2049a875
JM		 1681 wpa_printf(MSG_DEBUG, "WNM: Ignore unexpected WNM Action "
1682 "frame");
1683 return;
1684 }
75cad1a0
XC		 1685
1686 switch (act) {
27c77751 1687 case WNM_BSS_TRANS_MGMT_REQ:
2049a875 1688 ieee802_11_rx_bss_trans_mgmt_req(wpa_s, pos, end,
dbfb8e82 1689 !(mgmt->da[0] & 0x01));
27c77751 1690 break;
75cad1a0 1691 case WNM_SLEEP_MODE_RESP:
dbfb8e82 1692 ieee802_11_rx_wnmsleep_resp(wpa_s, pos, end - pos);
75cad1a0 1693 break;
95a3ea94
JM		 1694 case WNM_NOTIFICATION_REQ:
1695 ieee802_11_rx_wnm_notif_req(wpa_s, mgmt->sa, pos, end - pos);
1696 break;
75cad1a0 1697 default:
e27d20bb 1698 wpa_printf(MSG_ERROR, "WNM: Unknown request");
75cad1a0
XC		 1699 break;
1700 }
1701}
Unnamed repository; edit this file 'description' to name the repository.