3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "common/ieee802_11_common.h"
14 #include "common/wpa_ctrl.h"
15 #include "common/ocv.h"
16 #include "rsn_supp/wpa.h"
18 #include "wpa_supplicant_i.h"
21 #include "ctrl_iface.h"
25 #include "hs20_supplicant.h"
27 #define MAX_TFS_IE_LEN 1024
28 #define WNM_MAX_NEIGHBOR_REPORT 10
30 #define WNM_SCAN_RESULT_AGE 2 /* 2 seconds */
32 /* get the TFS IE from driver */
33 static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
34 u16 *buf_len, enum wnm_oper oper)
36 wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);
38 return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
42 /* set the TFS IE to driver */
43 static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
44 const u8 *addr, const u8 *buf, u16 buf_len,
49 wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);
51 return wpa_drv_wnm_oper(wpa_s, oper, addr, (u8 *) buf, &len);
55 /* MLME-SLEEPMODE.request */
56 int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
57 u8 action, u16 intval, struct wpabuf *tfs_req)
59 struct ieee80211_mgmt *mgmt;
62 struct wnm_sleep_element *wnmsleep_ie;
63 u8 *wnmtfs_ie, *oci_ie;
64 u8 wnmsleep_ie_len, oci_ie_len;
65 u16 wnmtfs_ie_len; /* possibly multiple IE(s) */
66 enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
67 WNM_SLEEP_TFS_REQ_IE_NONE;
69 wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
70 "action=%s to " MACSTR,
71 action == 0 ? "enter" : "exit",
72 MAC2STR(wpa_s->bssid));
74 /* WNM-Sleep Mode IE */
75 wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
76 wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
77 if (wnmsleep_ie == NULL)
79 wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
80 wnmsleep_ie->len = wnmsleep_ie_len - 2;
81 wnmsleep_ie->action_type = action;
82 wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
83 wnmsleep_ie->intval = host_to_le16(intval);
84 wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
85 (u8 *) wnmsleep_ie, wnmsleep_ie_len);
89 wnmtfs_ie_len = wpabuf_len(tfs_req);
90 wnmtfs_ie = os_memdup(wpabuf_head(tfs_req), wnmtfs_ie_len);
91 if (wnmtfs_ie == NULL) {
96 wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
97 if (wnmtfs_ie == NULL) {
101 if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
108 wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
109 (u8 *) wnmtfs_ie, wnmtfs_ie_len);
114 if (action == WNM_SLEEP_MODE_EXIT && wpa_sm_ocv_enabled(wpa_s->wpa)) {
115 struct wpa_channel_info ci;
117 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
118 wpa_printf(MSG_WARNING,
119 "Failed to get channel info for OCI element in WNM-Sleep Mode frame");
120 os_free(wnmsleep_ie);
125 oci_ie_len = OCV_OCI_EXTENDED_LEN;
126 oci_ie = os_zalloc(oci_ie_len);
128 wpa_printf(MSG_WARNING,
129 "Failed to allocate buffer for for OCI element in WNM-Sleep Mode frame");
130 os_free(wnmsleep_ie);
135 if (ocv_insert_extended_oci(&ci, oci_ie) < 0) {
136 os_free(wnmsleep_ie);
142 #endif /* CONFIG_OCV */
144 mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len +
147 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
148 "WNM-Sleep Request action frame");
149 os_free(wnmsleep_ie);
154 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
155 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
156 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
157 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
158 WLAN_FC_STYPE_ACTION);
159 mgmt->u.action.category = WLAN_ACTION_WNM;
160 mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
161 mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
162 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
164 /* copy TFS IE here */
165 if (wnmtfs_ie_len > 0) {
166 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
167 wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
171 /* copy OCV OCI here */
172 if (oci_ie_len > 0) {
173 os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
174 wnmsleep_ie_len + wnmtfs_ie_len, oci_ie, oci_ie_len);
176 #endif /* CONFIG_OCV */
178 len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
179 wnmtfs_ie_len + oci_ie_len;
181 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
182 wpa_s->own_addr, wpa_s->bssid,
183 &mgmt->u.action.category, len, 0);
185 wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
186 "(action=%d, intval=%d)", action, intval);
188 wpa_s->wnmsleep_used = 1;
190 os_free(wnmsleep_ie);
199 static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
200 const u8 *tfsresp_ie_start,
201 const u8 *tfsresp_ie_end)
203 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
204 wpa_s->bssid, NULL, NULL);
205 /* remove GTK/IGTK ?? */
207 /* set the TFS Resp IE(s) */
208 if (tfsresp_ie_start && tfsresp_ie_end &&
209 tfsresp_ie_end - tfsresp_ie_start >= 0) {
211 tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
213 wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
214 /* pass the TFS Resp IE(s) to driver for processing */
215 if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
218 WNM_SLEEP_TFS_RESP_IE_SET))
219 wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
224 static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
225 const u8 *frm, u16 key_len_total)
230 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM, wpa_s->bssid,
233 /* Install GTK/IGTK */
235 /* point to key data field */
236 ptr = (u8 *) frm + 1 + 2;
237 end = ptr + key_len_total;
238 wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);
240 if (key_len_total && !wpa_sm_pmf_enabled(wpa_s->wpa)) {
241 wpa_msg(wpa_s, MSG_INFO,
242 "WNM: Ignore Key Data in WNM-Sleep Mode Response - PMF not enabled");
246 while (end - ptr > 1) {
247 if (2 + ptr[1] > end - ptr) {
248 wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
251 wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
256 if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
257 if (ptr[1] < 11 + 5) {
258 wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
262 gtk_len = *(ptr + 4);
263 if (ptr[1] < 11 + gtk_len ||
264 gtk_len < 5 || gtk_len > 32) {
265 wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
269 wpa_wnmsleep_install_key(
271 WNM_SLEEP_SUBELEM_GTK,
274 #ifdef CONFIG_IEEE80211W
275 } else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
276 if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
277 wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
281 wpa_wnmsleep_install_key(wpa_s->wpa,
282 WNM_SLEEP_SUBELEM_IGTK, ptr);
283 ptr += 10 + WPA_IGTK_LEN;
284 #endif /* CONFIG_IEEE80211W */
286 break; /* skip the loop */
291 static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
292 const u8 *frm, int len)
295 * Action [1] | Dialog Token [1] | Key Data Len [2] | Key Data |
296 * WNM-Sleep Mode IE | TFS Response IE
298 const u8 *pos = frm; /* point to payload after the action field */
300 struct wnm_sleep_element *wnmsleep_ie = NULL;
301 /* multiple TFS Resp IE (assuming consecutive) */
302 const u8 *tfsresp_ie_start = NULL;
303 const u8 *tfsresp_ie_end = NULL;
305 const u8 *oci_ie = NULL;
307 #endif /* CONFIG_OCV */
310 if (!wpa_s->wnmsleep_used) {
311 wpa_printf(MSG_DEBUG,
312 "WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode operation has not been requested");
318 key_len_total = WPA_GET_LE16(frm + 1);
320 wpa_printf(MSG_DEBUG, "WNM-Sleep Mode Response token=%u key_len_total=%d",
321 frm[0], key_len_total);
323 if (key_len_total > left) {
324 wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
327 pos += 3 + key_len_total;
328 while (pos - frm + 1 < len) {
329 u8 ie_len = *(pos + 1);
330 if (2 + ie_len > frm + len - pos) {
331 wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
334 wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
335 if (*pos == WLAN_EID_WNMSLEEP && ie_len >= 4)
336 wnmsleep_ie = (struct wnm_sleep_element *) pos;
337 else if (*pos == WLAN_EID_TFS_RESP) {
338 if (!tfsresp_ie_start)
339 tfsresp_ie_start = pos;
340 tfsresp_ie_end = pos;
342 } else if (*pos == WLAN_EID_EXTENSION && ie_len >= 1 &&
343 pos[2] == WLAN_EID_EXT_OCV_OCI) {
345 oci_ie_len = ie_len - 1;
346 #endif /* CONFIG_OCV */
348 wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
353 wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
358 if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT &&
359 wpa_sm_ocv_enabled(wpa_s->wpa)) {
360 struct wpa_channel_info ci;
362 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
363 wpa_msg(wpa_s, MSG_WARNING,
364 "Failed to get channel info to validate received OCI in WNM-Sleep Mode frame");
368 if (ocv_verify_tx_params(oci_ie, oci_ie_len, &ci,
369 channel_width_to_int(ci.chanwidth),
371 wpa_msg(wpa_s, MSG_WARNING, "WNM: %s", ocv_errorstr);
375 #endif /* CONFIG_OCV */
377 wpa_s->wnmsleep_used = 0;
379 if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
380 wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
381 wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
382 "frame (action=%d, intval=%d)",
383 wnmsleep_ie->action_type, wnmsleep_ie->intval);
384 if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
385 wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
387 } else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
388 wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
391 wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
392 "(action=%d, intval=%d)",
393 wnmsleep_ie->action_type, wnmsleep_ie->intval);
394 if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
395 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
396 wpa_s->bssid, NULL, NULL);
397 else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
398 wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
399 wpa_s->bssid, NULL, NULL);
404 void wnm_deallocate_memory(struct wpa_supplicant *wpa_s)
408 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
409 os_free(wpa_s->wnm_neighbor_report_elements[i].meas_pilot);
410 os_free(wpa_s->wnm_neighbor_report_elements[i].mul_bssid);
413 wpa_s->wnm_num_neighbor_report = 0;
414 os_free(wpa_s->wnm_neighbor_report_elements);
415 wpa_s->wnm_neighbor_report_elements = NULL;
417 wpabuf_free(wpa_s->coloc_intf_elems);
418 wpa_s->coloc_intf_elems = NULL;
422 static void wnm_parse_neighbor_report_elem(struct neighbor_report *rep,
423 u8 id, u8 elen, const u8 *pos)
426 case WNM_NEIGHBOR_TSF:
428 wpa_printf(MSG_DEBUG, "WNM: Too short TSF");
431 rep->tsf_offset = WPA_GET_LE16(pos);
432 rep->beacon_int = WPA_GET_LE16(pos + 2);
433 rep->tsf_present = 1;
435 case WNM_NEIGHBOR_CONDENSED_COUNTRY_STRING:
437 wpa_printf(MSG_DEBUG, "WNM: Too short condensed "
441 os_memcpy(rep->country, pos, 2);
442 rep->country_present = 1;
444 case WNM_NEIGHBOR_BSS_TRANSITION_CANDIDATE:
446 wpa_printf(MSG_DEBUG, "WNM: Too short BSS transition "
450 rep->preference = pos[0];
451 rep->preference_present = 1;
453 case WNM_NEIGHBOR_BSS_TERMINATION_DURATION:
455 wpa_printf(MSG_DEBUG,
456 "WNM: Too short BSS termination duration");
459 rep->bss_term_tsf = WPA_GET_LE64(pos);
460 rep->bss_term_dur = WPA_GET_LE16(pos + 8);
461 rep->bss_term_present = 1;
463 case WNM_NEIGHBOR_BEARING:
465 wpa_printf(MSG_DEBUG, "WNM: Too short neighbor "
469 rep->bearing = WPA_GET_LE16(pos);
470 rep->distance = WPA_GET_LE32(pos + 2);
471 rep->rel_height = WPA_GET_LE16(pos + 2 + 4);
472 rep->bearing_present = 1;
474 case WNM_NEIGHBOR_MEASUREMENT_PILOT:
476 wpa_printf(MSG_DEBUG, "WNM: Too short measurement "
480 os_free(rep->meas_pilot);
481 rep->meas_pilot = os_zalloc(sizeof(struct measurement_pilot));
482 if (rep->meas_pilot == NULL)
484 rep->meas_pilot->measurement_pilot = pos[0];
485 rep->meas_pilot->subelem_len = elen - 1;
486 os_memcpy(rep->meas_pilot->subelems, pos + 1, elen - 1);
488 case WNM_NEIGHBOR_RRM_ENABLED_CAPABILITIES:
490 wpa_printf(MSG_DEBUG, "WNM: Too short RRM enabled "
494 os_memcpy(rep->rm_capab, pos, 5);
495 rep->rm_capab_present = 1;
497 case WNM_NEIGHBOR_MULTIPLE_BSSID:
499 wpa_printf(MSG_DEBUG, "WNM: Too short multiple BSSID");
502 os_free(rep->mul_bssid);
503 rep->mul_bssid = os_zalloc(sizeof(struct multiple_bssid));
504 if (rep->mul_bssid == NULL)
506 rep->mul_bssid->max_bssid_indicator = pos[0];
507 rep->mul_bssid->subelem_len = elen - 1;
508 os_memcpy(rep->mul_bssid->subelems, pos + 1, elen - 1);
514 static int wnm_nei_get_chan(struct wpa_supplicant *wpa_s, u8 op_class, u8 chan)
516 struct wpa_bss *bss = wpa_s->current_bss;
517 const char *country = NULL;
521 const u8 *elem = wpa_bss_get_ie(bss, WLAN_EID_COUNTRY);
523 if (elem && elem[1] >= 2)
524 country = (const char *) (elem + 2);
527 freq = ieee80211_chan_to_freq(country, op_class, chan);
528 if (freq <= 0 && op_class == 0) {
530 * Some APs do not advertise correct operating class
531 * information. Try to determine the most likely operating
532 * frequency based on the channel number.
534 if (chan >= 1 && chan <= 13)
535 freq = 2407 + chan * 5;
538 else if (chan >= 36 && chan <= 169)
539 freq = 5000 + chan * 5;
545 static void wnm_parse_neighbor_report(struct wpa_supplicant *wpa_s,
546 const u8 *pos, u8 len,
547 struct neighbor_report *rep)
552 wpa_printf(MSG_DEBUG, "WNM: Too short neighbor report");
556 os_memcpy(rep->bssid, pos, ETH_ALEN);
557 rep->bssid_info = WPA_GET_LE32(pos + ETH_ALEN);
558 rep->regulatory_class = *(pos + 10);
559 rep->channel_number = *(pos + 11);
560 rep->phy_type = *(pos + 12);
570 wpa_printf(MSG_DEBUG, "WNM: Subelement id=%u len=%u", id, elen);
573 wpa_printf(MSG_DEBUG,
574 "WNM: Truncated neighbor report subelement");
577 wnm_parse_neighbor_report_elem(rep, id, elen, pos);
582 rep->freq = wnm_nei_get_chan(wpa_s, rep->regulatory_class,
583 rep->channel_number);
587 static void wnm_clear_acceptable(struct wpa_supplicant *wpa_s)
591 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++)
592 wpa_s->wnm_neighbor_report_elements[i].acceptable = 0;
596 static struct wpa_bss * get_first_acceptable(struct wpa_supplicant *wpa_s)
599 struct neighbor_report *nei;
601 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
602 nei = &wpa_s->wnm_neighbor_report_elements[i];
604 return wpa_bss_get_bssid(wpa_s, nei->bssid);
612 static struct wpa_bss *
613 get_mbo_transition_candidate(struct wpa_supplicant *wpa_s,
614 enum mbo_transition_reject_reason *reason)
616 struct wpa_bss *target = NULL;
617 struct wpa_bss_trans_info params;
618 struct wpa_bss_candidate_info *info = NULL;
619 struct neighbor_report *nei = wpa_s->wnm_neighbor_report_elements;
620 u8 *first_candidate_bssid = NULL, *pos;
623 params.mbo_transition_reason = wpa_s->wnm_mbo_transition_reason;
624 params.n_candidates = 0;
625 params.bssid = os_calloc(wpa_s->wnm_num_neighbor_report, ETH_ALEN);
630 for (i = 0; i < wpa_s->wnm_num_neighbor_report; nei++, i++) {
632 first_candidate_bssid = nei->bssid;
633 if (!nei->acceptable)
635 os_memcpy(pos, nei->bssid, ETH_ALEN);
637 params.n_candidates++;
640 if (!params.n_candidates)
643 info = wpa_drv_get_bss_trans_status(wpa_s, ¶ms);
645 /* If failed to get candidate BSS transition status from driver,
646 * get the first acceptable candidate from wpa_supplicant.
648 target = wpa_bss_get_bssid(wpa_s, params.bssid);
652 /* Get the first acceptable candidate from driver */
653 for (i = 0; i < info->num; i++) {
654 if (info->candidates[i].is_accept) {
655 target = wpa_bss_get_bssid(wpa_s,
656 info->candidates[i].bssid);
661 /* If Disassociation Imminent is set and driver rejects all the
662 * candidate select first acceptable candidate which has
663 * rssi > disassoc_imminent_rssi_threshold
665 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_DISASSOC_IMMINENT) {
666 for (i = 0; i < info->num; i++) {
667 target = wpa_bss_get_bssid(wpa_s,
668 info->candidates[i].bssid);
671 wpa_s->conf->disassoc_imminent_rssi_threshold))
677 /* While sending BTM reject use reason code of the first candidate
678 * received in BTM request frame
681 for (i = 0; i < info->num; i++) {
682 if (first_candidate_bssid &&
683 os_memcmp(first_candidate_bssid,
684 info->candidates[i].bssid, ETH_ALEN) == 0)
686 *reason = info->candidates[i].reject_reason;
695 os_free(params.bssid);
697 os_free(info->candidates);
702 #endif /* CONFIG_MBO */
705 static struct wpa_bss *
706 compare_scan_neighbor_results(struct wpa_supplicant *wpa_s, os_time_t age_secs,
707 enum mbo_transition_reject_reason *reason)
710 struct wpa_bss *bss = wpa_s->current_bss;
711 struct wpa_bss *target;
716 wpa_printf(MSG_DEBUG, "WNM: Current BSS " MACSTR " RSSI %d",
717 MAC2STR(wpa_s->bssid), bss->level);
719 wnm_clear_acceptable(wpa_s);
721 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
722 struct neighbor_report *nei;
724 nei = &wpa_s->wnm_neighbor_report_elements[i];
725 if (nei->preference_present && nei->preference == 0) {
726 wpa_printf(MSG_DEBUG, "Skip excluded BSS " MACSTR,
727 MAC2STR(nei->bssid));
731 target = wpa_bss_get_bssid(wpa_s, nei->bssid);
733 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
734 " (pref %d) not found in scan results",
736 nei->preference_present ? nei->preference :
742 struct os_reltime now;
744 if (os_get_reltime(&now) == 0 &&
745 os_reltime_expired(&now, &target->last_update,
747 wpa_printf(MSG_DEBUG,
748 "Candidate BSS is more than %ld seconds old",
754 if (bss->ssid_len != target->ssid_len ||
755 os_memcmp(bss->ssid, target->ssid, bss->ssid_len) != 0) {
757 * TODO: Could consider allowing transition to another
758 * ESS if PMF was enabled for the association.
760 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
761 " (pref %d) in different ESS",
763 nei->preference_present ? nei->preference :
768 if (wpa_s->current_ssid &&
769 !wpa_scan_res_match(wpa_s, 0, target, wpa_s->current_ssid,
771 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
772 " (pref %d) does not match the current network profile",
774 nei->preference_present ? nei->preference :
779 if (wpa_is_bss_tmp_disallowed(wpa_s, target)) {
780 wpa_printf(MSG_DEBUG,
781 "MBO: Candidate BSS " MACSTR
782 " retry delay is not over yet",
783 MAC2STR(nei->bssid));
787 if (target->level < bss->level && target->level < -80) {
788 wpa_printf(MSG_DEBUG, "Candidate BSS " MACSTR
789 " (pref %d) does not have sufficient signal level (%d)",
791 nei->preference_present ? nei->preference :
801 if (wpa_s->wnm_mbo_trans_reason_present)
802 target = get_mbo_transition_candidate(wpa_s, reason);
804 target = get_first_acceptable(wpa_s);
805 #else /* CONFIG_MBO */
806 target = get_first_acceptable(wpa_s);
807 #endif /* CONFIG_MBO */
810 wpa_printf(MSG_DEBUG,
811 "WNM: Found an acceptable preferred transition candidate BSS "
813 MAC2STR(target->bssid), target->level);
820 static int wpa_bss_ies_eq(struct wpa_bss *a, struct wpa_bss *b, u8 eid)
822 const u8 *ie_a, *ie_b;
827 ie_a = wpa_bss_get_ie(a, eid);
828 ie_b = wpa_bss_get_ie(b, eid);
830 if (!ie_a || !ie_b || ie_a[1] != ie_b[1])
833 return os_memcmp(ie_a, ie_b, ie_a[1]) == 0;
837 static u32 wnm_get_bss_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
841 info |= NEI_REP_BSSID_INFO_AP_UNKNOWN_REACH;
844 * Leave the security and key scope bits unset to indicate that the
845 * security information is not available.
848 if (bss->caps & WLAN_CAPABILITY_SPECTRUM_MGMT)
849 info |= NEI_REP_BSSID_INFO_SPECTRUM_MGMT;
850 if (bss->caps & WLAN_CAPABILITY_QOS)
851 info |= NEI_REP_BSSID_INFO_QOS;
852 if (bss->caps & WLAN_CAPABILITY_APSD)
853 info |= NEI_REP_BSSID_INFO_APSD;
854 if (bss->caps & WLAN_CAPABILITY_RADIO_MEASUREMENT)
855 info |= NEI_REP_BSSID_INFO_RM;
856 if (bss->caps & WLAN_CAPABILITY_DELAYED_BLOCK_ACK)
857 info |= NEI_REP_BSSID_INFO_DELAYED_BA;
858 if (bss->caps & WLAN_CAPABILITY_IMM_BLOCK_ACK)
859 info |= NEI_REP_BSSID_INFO_IMM_BA;
860 if (wpa_bss_ies_eq(bss, wpa_s->current_bss, WLAN_EID_MOBILITY_DOMAIN))
861 info |= NEI_REP_BSSID_INFO_MOBILITY_DOMAIN;
862 if (wpa_bss_ies_eq(bss, wpa_s->current_bss, WLAN_EID_HT_CAP))
863 info |= NEI_REP_BSSID_INFO_HT;
869 static int wnm_add_nei_rep(struct wpabuf **buf, const u8 *bssid,
870 u32 bss_info, u8 op_class, u8 chan, u8 phy_type,
873 if (wpabuf_len(*buf) + 18 >
874 IEEE80211_MAX_MMPDU_SIZE - IEEE80211_HDRLEN) {
875 wpa_printf(MSG_DEBUG,
876 "WNM: No room in frame for Neighbor Report element");
880 if (wpabuf_resize(buf, 18) < 0) {
881 wpa_printf(MSG_DEBUG,
882 "WNM: Failed to allocate memory for Neighbor Report element");
886 wpabuf_put_u8(*buf, WLAN_EID_NEIGHBOR_REPORT);
887 /* length: 13 for basic neighbor report + 3 for preference subelement */
888 wpabuf_put_u8(*buf, 16);
889 wpabuf_put_data(*buf, bssid, ETH_ALEN);
890 wpabuf_put_le32(*buf, bss_info);
891 wpabuf_put_u8(*buf, op_class);
892 wpabuf_put_u8(*buf, chan);
893 wpabuf_put_u8(*buf, phy_type);
894 wpabuf_put_u8(*buf, WNM_NEIGHBOR_BSS_TRANSITION_CANDIDATE);
895 wpabuf_put_u8(*buf, 1);
896 wpabuf_put_u8(*buf, pref);
901 static int wnm_nei_rep_add_bss(struct wpa_supplicant *wpa_s,
902 struct wpa_bss *bss, struct wpabuf **buf,
907 int sec_chan = 0, vht = 0;
908 enum phy_type phy_type;
910 struct ieee80211_ht_operation *ht_oper = NULL;
911 struct ieee80211_vht_operation *vht_oper = NULL;
913 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_OPERATION);
914 if (ie && ie[1] >= 2) {
915 ht_oper = (struct ieee80211_ht_operation *) (ie + 2);
917 if (ht_oper->ht_param & HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
919 else if (ht_oper->ht_param &
920 HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
924 ie = wpa_bss_get_ie(bss, WLAN_EID_VHT_OPERATION);
925 if (ie && ie[1] >= 1) {
926 vht_oper = (struct ieee80211_vht_operation *) (ie + 2);
928 if (vht_oper->vht_op_info_chwidth == CHANWIDTH_80MHZ ||
929 vht_oper->vht_op_info_chwidth == CHANWIDTH_160MHZ ||
930 vht_oper->vht_op_info_chwidth == CHANWIDTH_80P80MHZ)
931 vht = vht_oper->vht_op_info_chwidth;
934 if (ieee80211_freq_to_channel_ext(bss->freq, sec_chan, vht, &op_class,
935 &chan) == NUM_HOSTAPD_MODES) {
936 wpa_printf(MSG_DEBUG,
937 "WNM: Cannot determine operating class and channel");
941 phy_type = ieee80211_get_phy_type(bss->freq, (ht_oper != NULL),
943 if (phy_type == PHY_TYPE_UNSPECIFIED) {
944 wpa_printf(MSG_DEBUG,
945 "WNM: Cannot determine BSS phy type for Neighbor Report");
949 info = wnm_get_bss_info(wpa_s, bss);
951 return wnm_add_nei_rep(buf, bss->bssid, info, op_class, chan, phy_type,
956 static void wnm_add_cand_list(struct wpa_supplicant *wpa_s, struct wpabuf **buf)
958 unsigned int i, pref = 255;
959 struct os_reltime now;
960 struct wpa_ssid *ssid = wpa_s->current_ssid;
966 * TODO: Define when scan results are no longer valid for the candidate
969 os_get_reltime(&now);
970 if (os_reltime_expired(&now, &wpa_s->last_scan, 10))
973 wpa_printf(MSG_DEBUG,
974 "WNM: Add candidate list to BSS Transition Management Response frame");
975 for (i = 0; i < wpa_s->last_scan_res_used && pref; i++) {
976 struct wpa_bss *bss = wpa_s->last_scan_res[i];
979 if (wpa_scan_res_match(wpa_s, i, bss, ssid, 1, 0)) {
980 res = wnm_nei_rep_add_bss(wpa_s, bss, buf, pref--);
982 continue; /* could not build entry for BSS */
984 break; /* no more room for candidates */
990 wpa_hexdump_buf(MSG_DEBUG,
991 "WNM: BSS Transition Management Response candidate list",
996 #define BTM_RESP_MIN_SIZE 5 + ETH_ALEN
998 static void wnm_send_bss_transition_mgmt_resp(
999 struct wpa_supplicant *wpa_s, u8 dialog_token,
1000 enum bss_trans_mgmt_status_code status,
1001 enum mbo_transition_reject_reason reason,
1002 u8 delay, const u8 *target_bssid)
1007 wpa_printf(MSG_DEBUG,
1008 "WNM: Send BSS Transition Management Response to " MACSTR
1009 " dialog_token=%u status=%u reason=%u delay=%d",
1010 MAC2STR(wpa_s->bssid), dialog_token, status, reason, delay);
1011 if (!wpa_s->current_bss) {
1012 wpa_printf(MSG_DEBUG,
1013 "WNM: Current BSS not known - drop response");
1017 buf = wpabuf_alloc(BTM_RESP_MIN_SIZE);
1019 wpa_printf(MSG_DEBUG,
1020 "WNM: Failed to allocate memory for BTM response");
1024 wpa_s->bss_tm_status = status;
1025 wpas_notify_bss_tm_status(wpa_s);
1027 wpabuf_put_u8(buf, WLAN_ACTION_WNM);
1028 wpabuf_put_u8(buf, WNM_BSS_TRANS_MGMT_RESP);
1029 wpabuf_put_u8(buf, dialog_token);
1030 wpabuf_put_u8(buf, status);
1031 wpabuf_put_u8(buf, delay);
1033 wpabuf_put_data(buf, target_bssid, ETH_ALEN);
1034 } else if (status == WNM_BSS_TM_ACCEPT) {
1036 * P802.11-REVmc clarifies that the Target BSSID field is always
1037 * present when status code is zero, so use a fake value here if
1038 * no BSSID is yet known.
1040 wpabuf_put_data(buf, "\0\0\0\0\0\0", ETH_ALEN);
1043 if (status == WNM_BSS_TM_ACCEPT)
1044 wnm_add_cand_list(wpa_s, &buf);
1047 if (status != WNM_BSS_TM_ACCEPT &&
1048 wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) {
1052 ret = wpas_mbo_ie_bss_trans_reject(wpa_s, mbo, sizeof(mbo),
1055 if (wpabuf_resize(&buf, ret) < 0) {
1057 wpa_printf(MSG_DEBUG,
1058 "WNM: Failed to allocate memory for MBO IE");
1062 wpabuf_put_data(buf, mbo, ret);
1065 #endif /* CONFIG_MBO */
1067 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1068 wpa_s->own_addr, wpa_s->bssid,
1069 wpabuf_head_u8(buf), wpabuf_len(buf), 0);
1071 wpa_printf(MSG_DEBUG,
1072 "WNM: Failed to send BSS Transition Management Response");
1079 static void wnm_bss_tm_connect(struct wpa_supplicant *wpa_s,
1080 struct wpa_bss *bss, struct wpa_ssid *ssid,
1083 wpa_dbg(wpa_s, MSG_DEBUG,
1084 "WNM: Transition to BSS " MACSTR
1085 " based on BSS Transition Management Request (old BSSID "
1086 MACSTR " after_new_scan=%d)",
1087 MAC2STR(bss->bssid), MAC2STR(wpa_s->bssid), after_new_scan);
1089 /* Send the BSS Management Response - Accept */
1090 if (wpa_s->wnm_reply) {
1091 wpa_s->wnm_reply = 0;
1092 wpa_printf(MSG_DEBUG,
1093 "WNM: Sending successful BSS Transition Management Response");
1094 wnm_send_bss_transition_mgmt_resp(
1095 wpa_s, wpa_s->wnm_dialog_token, WNM_BSS_TM_ACCEPT,
1096 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED, 0,
1100 if (bss == wpa_s->current_bss) {
1101 wpa_printf(MSG_DEBUG,
1102 "WNM: Already associated with the preferred candidate");
1103 wnm_deallocate_memory(wpa_s);
1107 wpa_s->reassociate = 1;
1108 wpa_printf(MSG_DEBUG, "WNM: Issuing connect");
1109 wpa_supplicant_connect(wpa_s, bss, ssid);
1110 wnm_deallocate_memory(wpa_s);
1114 int wnm_scan_process(struct wpa_supplicant *wpa_s, int reply_on_fail)
1116 struct wpa_bss *bss;
1117 struct wpa_ssid *ssid = wpa_s->current_ssid;
1118 enum bss_trans_mgmt_status_code status = WNM_BSS_TM_REJECT_UNSPECIFIED;
1119 enum mbo_transition_reject_reason reason =
1120 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED;
1122 if (!wpa_s->wnm_neighbor_report_elements)
1125 wpa_dbg(wpa_s, MSG_DEBUG,
1126 "WNM: Process scan results for BSS Transition Management");
1127 if (os_reltime_before(&wpa_s->wnm_cand_valid_until,
1128 &wpa_s->scan_trigger_time)) {
1129 wpa_printf(MSG_DEBUG, "WNM: Previously stored BSS transition candidate list is not valid anymore - drop it");
1130 wnm_deallocate_memory(wpa_s);
1134 if (!wpa_s->current_bss ||
1135 os_memcmp(wpa_s->wnm_cand_from_bss, wpa_s->current_bss->bssid,
1137 wpa_printf(MSG_DEBUG, "WNM: Stored BSS transition candidate list not from the current BSS - ignore it");
1141 /* Compare the Neighbor Report and scan results */
1142 bss = compare_scan_neighbor_results(wpa_s, 0, &reason);
1144 wpa_printf(MSG_DEBUG, "WNM: No BSS transition candidate match found");
1145 status = WNM_BSS_TM_REJECT_NO_SUITABLE_CANDIDATES;
1146 goto send_bss_resp_fail;
1149 /* Associate to the network */
1150 wnm_bss_tm_connect(wpa_s, bss, ssid, 1);
1157 /* Send reject response for all the failures */
1159 if (wpa_s->wnm_reply) {
1160 wpa_s->wnm_reply = 0;
1161 wnm_send_bss_transition_mgmt_resp(wpa_s,
1162 wpa_s->wnm_dialog_token,
1163 status, reason, 0, NULL);
1165 wnm_deallocate_memory(wpa_s);
1171 static int cand_pref_compar(const void *a, const void *b)
1173 const struct neighbor_report *aa = a;
1174 const struct neighbor_report *bb = b;
1176 if (!aa->preference_present && !bb->preference_present)
1178 if (!aa->preference_present)
1180 if (!bb->preference_present)
1182 if (bb->preference > aa->preference)
1184 if (bb->preference < aa->preference)
1190 static void wnm_sort_cand_list(struct wpa_supplicant *wpa_s)
1192 if (!wpa_s->wnm_neighbor_report_elements)
1194 qsort(wpa_s->wnm_neighbor_report_elements,
1195 wpa_s->wnm_num_neighbor_report, sizeof(struct neighbor_report),
1200 static void wnm_dump_cand_list(struct wpa_supplicant *wpa_s)
1204 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Candidate List");
1205 if (!wpa_s->wnm_neighbor_report_elements)
1207 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1208 struct neighbor_report *nei;
1210 nei = &wpa_s->wnm_neighbor_report_elements[i];
1211 wpa_printf(MSG_DEBUG, "%u: " MACSTR
1212 " info=0x%x op_class=%u chan=%u phy=%u pref=%d freq=%d",
1213 i, MAC2STR(nei->bssid), nei->bssid_info,
1214 nei->regulatory_class,
1215 nei->channel_number, nei->phy_type,
1216 nei->preference_present ? nei->preference : -1,
1222 static int chan_supported(struct wpa_supplicant *wpa_s, int freq)
1226 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1227 struct hostapd_hw_modes *mode = &wpa_s->hw.modes[i];
1230 for (j = 0; j < mode->num_channels; j++) {
1231 struct hostapd_channel_data *chan;
1233 chan = &mode->channels[j];
1234 if (chan->freq == freq &&
1235 !(chan->flag & HOSTAPD_CHAN_DISABLED))
1244 static void wnm_set_scan_freqs(struct wpa_supplicant *wpa_s)
1250 if (!wpa_s->wnm_neighbor_report_elements)
1253 if (wpa_s->hw.modes == NULL)
1256 os_free(wpa_s->next_scan_freqs);
1257 wpa_s->next_scan_freqs = NULL;
1259 freqs = os_calloc(wpa_s->wnm_num_neighbor_report + 1, sizeof(int));
1263 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1264 struct neighbor_report *nei;
1266 nei = &wpa_s->wnm_neighbor_report_elements[i];
1267 if (nei->freq <= 0) {
1268 wpa_printf(MSG_DEBUG,
1269 "WNM: Unknown neighbor operating frequency for "
1270 MACSTR " - scan all channels",
1271 MAC2STR(nei->bssid));
1275 if (chan_supported(wpa_s, nei->freq))
1276 add_freq(freqs, &num_freqs, nei->freq);
1279 if (num_freqs == 0) {
1284 wpa_printf(MSG_DEBUG,
1285 "WNM: Scan %d frequencies based on transition candidate list",
1287 wpa_s->next_scan_freqs = freqs;
1291 static int wnm_fetch_scan_results(struct wpa_supplicant *wpa_s)
1293 struct wpa_scan_results *scan_res;
1294 struct wpa_bss *bss;
1295 struct wpa_ssid *ssid = wpa_s->current_ssid;
1299 wpa_dbg(wpa_s, MSG_DEBUG,
1300 "WNM: Fetch current scan results from the driver for checking transition candidates");
1301 scan_res = wpa_drv_get_scan_results2(wpa_s);
1303 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Failed to get scan results");
1307 if (scan_res->fetch_time.sec == 0)
1308 os_get_reltime(&scan_res->fetch_time);
1310 filter_scan_res(wpa_s, scan_res);
1312 for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
1313 struct neighbor_report *nei;
1315 nei = &wpa_s->wnm_neighbor_report_elements[i];
1316 if (nei->preference_present && nei->preference == 0)
1319 for (j = 0; j < scan_res->num; j++) {
1320 struct wpa_scan_res *res;
1323 res = scan_res->res[j];
1324 if (os_memcmp(nei->bssid, res->bssid, ETH_ALEN) != 0 ||
1325 res->age > WNM_SCAN_RESULT_AGE * 1000)
1327 bss = wpa_s->current_bss;
1328 ssid_ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
1329 if (bss && ssid_ie &&
1330 (bss->ssid_len != ssid_ie[1] ||
1331 os_memcmp(bss->ssid, ssid_ie + 2,
1332 bss->ssid_len) != 0))
1335 /* Potential candidate found */
1338 scan_est_throughput(wpa_s, res);
1339 wpa_bss_update_scan_res(wpa_s, res,
1340 &scan_res->fetch_time);
1344 wpa_scan_results_free(scan_res);
1346 wpa_dbg(wpa_s, MSG_DEBUG,
1347 "WNM: No transition candidate matches existing scan results");
1351 bss = compare_scan_neighbor_results(wpa_s, WNM_SCAN_RESULT_AGE, NULL);
1353 wpa_dbg(wpa_s, MSG_DEBUG,
1354 "WNM: Comparison of scan results against transition candidates did not find matches");
1358 /* Associate to the network */
1359 wnm_bss_tm_connect(wpa_s, bss, ssid, 0);
1364 static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
1365 const u8 *pos, const u8 *end,
1368 unsigned int beacon_int;
1372 #endif /* CONFIG_MBO */
1374 if (wpa_s->conf->disable_btm)
1381 wpa_s->wnm_mbo_trans_reason_present = 0;
1382 wpa_s->wnm_mbo_transition_reason = 0;
1383 #endif /* CONFIG_MBO */
1385 if (wpa_s->current_bss)
1386 beacon_int = wpa_s->current_bss->beacon_int;
1388 beacon_int = 100; /* best guess */
1390 wpa_s->wnm_dialog_token = pos[0];
1391 wpa_s->wnm_mode = pos[1];
1392 wpa_s->wnm_dissoc_timer = WPA_GET_LE16(pos + 2);
1394 wpa_s->wnm_reply = reply;
1396 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management Request: "
1397 "dialog_token=%u request_mode=0x%x "
1398 "disassoc_timer=%u validity_interval=%u",
1399 wpa_s->wnm_dialog_token, wpa_s->wnm_mode,
1400 wpa_s->wnm_dissoc_timer, valid_int);
1402 #if defined(CONFIG_MBO) && defined(CONFIG_TESTING_OPTIONS)
1403 if (wpa_s->reject_btm_req_reason) {
1404 wpa_printf(MSG_INFO,
1405 "WNM: Testing - reject BSS Transition Management Request: reject_btm_req_reason=%d",
1406 wpa_s->reject_btm_req_reason);
1407 wnm_send_bss_transition_mgmt_resp(
1408 wpa_s, wpa_s->wnm_dialog_token,
1409 wpa_s->reject_btm_req_reason,
1410 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED, 0, NULL);
1413 #endif /* CONFIG_MBO && CONFIG_TESTING_OPTIONS */
1417 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) {
1418 if (end - pos < 12) {
1419 wpa_printf(MSG_DEBUG, "WNM: Too short BSS TM Request");
1422 os_memcpy(wpa_s->wnm_bss_termination_duration, pos, 12);
1423 pos += 12; /* BSS Termination Duration */
1426 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT) {
1429 if (end - pos < 1 || 1 + pos[0] > end - pos) {
1430 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS Transition "
1431 "Management Request (URL)");
1434 os_memcpy(url, pos + 1, pos[0]);
1438 wpa_msg(wpa_s, MSG_INFO, ESS_DISASSOC_IMMINENT "%d %u %s",
1439 wpa_sm_pmf_enabled(wpa_s->wpa),
1440 wpa_s->wnm_dissoc_timer * beacon_int * 128 / 125, url);
1443 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_DISASSOC_IMMINENT) {
1444 wpa_msg(wpa_s, MSG_INFO, "WNM: Disassociation Imminent - "
1445 "Disassociation Timer %u", wpa_s->wnm_dissoc_timer);
1446 if (wpa_s->wnm_dissoc_timer && !wpa_s->scanning) {
1447 /* TODO: mark current BSS less preferred for
1449 wpa_printf(MSG_DEBUG, "Trying to find another BSS");
1450 wpa_supplicant_req_scan(wpa_s, 0, 0);
1455 vendor = get_ie(pos, end - pos, WLAN_EID_VENDOR_SPECIFIC);
1457 wpas_mbo_ie_trans_req(wpa_s, vendor + 2, vendor[1]);
1458 #endif /* CONFIG_MBO */
1460 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED) {
1461 unsigned int valid_ms;
1463 wpa_msg(wpa_s, MSG_INFO, "WNM: Preferred List Available");
1464 wnm_deallocate_memory(wpa_s);
1465 wpa_s->wnm_neighbor_report_elements = os_calloc(
1466 WNM_MAX_NEIGHBOR_REPORT,
1467 sizeof(struct neighbor_report));
1468 if (wpa_s->wnm_neighbor_report_elements == NULL)
1471 while (end - pos >= 2 &&
1472 wpa_s->wnm_num_neighbor_report < WNM_MAX_NEIGHBOR_REPORT)
1477 wpa_printf(MSG_DEBUG, "WNM: Neighbor report tag %u",
1479 if (len > end - pos) {
1480 wpa_printf(MSG_DEBUG, "WNM: Truncated request");
1483 if (tag == WLAN_EID_NEIGHBOR_REPORT) {
1484 struct neighbor_report *rep;
1485 rep = &wpa_s->wnm_neighbor_report_elements[
1486 wpa_s->wnm_num_neighbor_report];
1487 wnm_parse_neighbor_report(wpa_s, pos, len, rep);
1488 wpa_s->wnm_num_neighbor_report++;
1490 if (wpa_s->wnm_mbo_trans_reason_present &&
1491 wpa_s->wnm_num_neighbor_report == 1) {
1493 wpa_printf(MSG_DEBUG,
1494 "WNM: First transition candidate is "
1495 MACSTR, MAC2STR(rep->bssid));
1497 #endif /* CONFIG_MBO */
1503 if (!wpa_s->wnm_num_neighbor_report) {
1504 wpa_printf(MSG_DEBUG,
1505 "WNM: Candidate list included bit is set, but no candidates found");
1506 wnm_send_bss_transition_mgmt_resp(
1507 wpa_s, wpa_s->wnm_dialog_token,
1508 WNM_BSS_TM_REJECT_NO_SUITABLE_CANDIDATES,
1509 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED, 0,
1514 wnm_sort_cand_list(wpa_s);
1515 wnm_dump_cand_list(wpa_s);
1516 valid_ms = valid_int * beacon_int * 128 / 125;
1517 wpa_printf(MSG_DEBUG, "WNM: Candidate list valid for %u ms",
1519 os_get_reltime(&wpa_s->wnm_cand_valid_until);
1520 wpa_s->wnm_cand_valid_until.sec += valid_ms / 1000;
1521 wpa_s->wnm_cand_valid_until.usec += (valid_ms % 1000) * 1000;
1522 wpa_s->wnm_cand_valid_until.sec +=
1523 wpa_s->wnm_cand_valid_until.usec / 1000000;
1524 wpa_s->wnm_cand_valid_until.usec %= 1000000;
1525 os_memcpy(wpa_s->wnm_cand_from_bss, wpa_s->bssid, ETH_ALEN);
1528 * Fetch the latest scan results from the kernel and check for
1529 * candidates based on those results first. This can help in
1530 * finding more up-to-date information should the driver has
1531 * done some internal scanning operations after the last scan
1532 * result update in wpa_supplicant.
1534 if (wnm_fetch_scan_results(wpa_s) > 0)
1538 * Try to use previously received scan results, if they are
1539 * recent enough to use for a connection.
1541 if (wpa_s->last_scan_res_used > 0) {
1542 struct os_reltime now;
1544 os_get_reltime(&now);
1545 if (!os_reltime_expired(&now, &wpa_s->last_scan, 10)) {
1546 wpa_printf(MSG_DEBUG,
1547 "WNM: Try to use recent scan results");
1548 if (wnm_scan_process(wpa_s, 0) > 0)
1550 wpa_printf(MSG_DEBUG,
1551 "WNM: No match in previous scan results - try a new scan");
1555 wnm_set_scan_freqs(wpa_s);
1556 if (wpa_s->wnm_num_neighbor_report == 1) {
1557 os_memcpy(wpa_s->next_scan_bssid,
1558 wpa_s->wnm_neighbor_report_elements[0].bssid,
1560 wpa_printf(MSG_DEBUG,
1561 "WNM: Scan only for a specific BSSID since there is only a single candidate "
1562 MACSTR, MAC2STR(wpa_s->next_scan_bssid));
1564 wpa_supplicant_req_scan(wpa_s, 0, 0);
1566 enum bss_trans_mgmt_status_code status;
1567 if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT)
1568 status = WNM_BSS_TM_ACCEPT;
1570 wpa_msg(wpa_s, MSG_INFO, "WNM: BSS Transition Management Request did not include candidates");
1571 status = WNM_BSS_TM_REJECT_UNSPECIFIED;
1573 wnm_send_bss_transition_mgmt_resp(
1574 wpa_s, wpa_s->wnm_dialog_token, status,
1575 MBO_TRANSITION_REJECT_REASON_UNSPECIFIED, 0, NULL);
1580 #define BTM_QUERY_MIN_SIZE 4
1582 int wnm_send_bss_transition_mgmt_query(struct wpa_supplicant *wpa_s,
1584 const char *btm_candidates,
1590 wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Query to "
1591 MACSTR " query_reason=%u%s",
1592 MAC2STR(wpa_s->bssid), query_reason,
1593 cand_list ? " candidate list" : "");
1595 buf = wpabuf_alloc(BTM_QUERY_MIN_SIZE);
1599 wpabuf_put_u8(buf, WLAN_ACTION_WNM);
1600 wpabuf_put_u8(buf, WNM_BSS_TRANS_MGMT_QUERY);
1601 wpabuf_put_u8(buf, 1);
1602 wpabuf_put_u8(buf, query_reason);
1605 wnm_add_cand_list(wpa_s, &buf);
1607 if (btm_candidates) {
1608 const size_t max_len = 1000;
1610 ret = wpabuf_resize(&buf, max_len);
1616 ret = ieee802_11_parse_candidate_list(btm_candidates,
1624 wpabuf_put(buf, ret);
1627 ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1628 wpa_s->own_addr, wpa_s->bssid,
1629 wpabuf_head_u8(buf), wpabuf_len(buf), 0);
1636 static void ieee802_11_rx_wnm_notif_req_wfa(struct wpa_supplicant *wpa_s,
1637 const u8 *sa, const u8 *data,
1640 const u8 *pos, *end, *next;
1646 while (end - pos > 1) {
1649 wpa_printf(MSG_DEBUG, "WNM: WFA subelement %u len %u",
1651 if (ie_len > end - pos) {
1652 wpa_printf(MSG_DEBUG, "WNM: Not enough room for "
1656 next = pos + ie_len;
1661 wpa_printf(MSG_DEBUG, "WNM: Subelement OUI %06x type %u",
1662 WPA_GET_BE24(pos), pos[3]);
1665 if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 5 &&
1666 WPA_GET_BE24(pos) == OUI_WFA &&
1667 pos[3] == HS20_WNM_SUB_REM_NEEDED) {
1668 /* Subscription Remediation subelement */
1674 wpa_printf(MSG_DEBUG, "WNM: Subscription Remediation "
1676 ie_end = pos + ie_len;
1680 wpa_printf(MSG_DEBUG, "WNM: No Server URL included");
1684 if (url_len + 1 > ie_end - pos) {
1685 wpa_printf(MSG_DEBUG, "WNM: Not enough room for Server URL (len=%u) and Server Method (left %d)",
1687 (int) (ie_end - pos));
1690 url = os_malloc(url_len + 1);
1693 os_memcpy(url, pos, url_len);
1694 url[url_len] = '\0';
1695 osu_method = pos[url_len];
1697 hs20_rx_subscription_remediation(wpa_s, url,
1704 if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 8 &&
1705 WPA_GET_BE24(pos) == OUI_WFA &&
1706 pos[3] == HS20_WNM_DEAUTH_IMMINENT_NOTICE) {
1713 ie_end = pos + ie_len;
1716 reauth_delay = WPA_GET_LE16(pos);
1719 wpa_printf(MSG_DEBUG, "WNM: HS 2.0 Deauthentication "
1720 "Imminent - Reason Code %u "
1721 "Re-Auth Delay %u URL Length %u",
1722 code, reauth_delay, url_len);
1723 if (url_len > ie_end - pos)
1725 url = os_malloc(url_len + 1);
1728 os_memcpy(url, pos, url_len);
1729 url[url_len] = '\0';
1730 hs20_rx_deauth_imminent_notice(wpa_s, code,
1737 if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 5 &&
1738 WPA_GET_BE24(pos) == OUI_WFA &&
1739 pos[3] == HS20_WNM_T_C_ACCEPTANCE) {
1744 ie_end = pos + ie_len;
1747 wpa_printf(MSG_DEBUG,
1748 "WNM: HS 2.0 Terms and Conditions Acceptance (URL Length %u)",
1750 if (url_len > ie_end - pos)
1752 url = os_malloc(url_len + 1);
1755 os_memcpy(url, pos, url_len);
1756 url[url_len] = '\0';
1757 hs20_rx_t_c_acceptance(wpa_s, url);
1762 #endif /* CONFIG_HS20 */
1769 static void ieee802_11_rx_wnm_notif_req(struct wpa_supplicant *wpa_s,
1770 const u8 *sa, const u8 *frm, int len)
1772 const u8 *pos, *end;
1773 u8 dialog_token, type;
1775 /* Dialog Token [1] | Type [1] | Subelements */
1777 if (len < 2 || sa == NULL)
1781 dialog_token = *pos++;
1784 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Received WNM-Notification Request "
1785 "(dialog_token %u type %u sa " MACSTR ")",
1786 dialog_token, type, MAC2STR(sa));
1787 wpa_hexdump(MSG_DEBUG, "WNM-Notification Request subelements",
1790 if (wpa_s->wpa_state != WPA_COMPLETED ||
1791 os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) {
1792 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: WNM-Notification frame not "
1793 "from our AP - ignore it");
1799 ieee802_11_rx_wnm_notif_req_wfa(wpa_s, sa, pos, end - pos);
1802 wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Ignore unknown "
1803 "WNM-Notification type %u", type);
1809 static void ieee802_11_rx_wnm_coloc_intf_req(struct wpa_supplicant *wpa_s,
1810 const u8 *sa, const u8 *frm,
1813 u8 dialog_token, req_info, auto_report, timeout;
1815 if (!wpa_s->conf->coloc_intf_reporting)
1818 /* Dialog Token [1] | Request Info [1] */
1822 dialog_token = frm[0];
1824 auto_report = req_info & 0x03;
1825 timeout = req_info >> 2;
1827 wpa_dbg(wpa_s, MSG_DEBUG,
1828 "WNM: Received Collocated Interference Request (dialog_token %u auto_report %u timeout %u sa " MACSTR ")",
1829 dialog_token, auto_report, timeout, MAC2STR(sa));
1831 if (dialog_token == 0)
1832 return; /* only nonzero values are used for request */
1834 if (wpa_s->wpa_state != WPA_COMPLETED ||
1835 os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) {
1836 wpa_dbg(wpa_s, MSG_DEBUG,
1837 "WNM: Collocated Interference Request frame not from current AP - ignore it");
1841 wpa_msg(wpa_s, MSG_INFO, COLOC_INTF_REQ "%u %u %u",
1842 dialog_token, auto_report, timeout);
1843 wpa_s->coloc_intf_dialog_token = dialog_token;
1844 wpa_s->coloc_intf_auto_report = auto_report;
1845 wpa_s->coloc_intf_timeout = timeout;
1849 void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
1850 const struct ieee80211_mgmt *mgmt, size_t len)
1852 const u8 *pos, *end;
1855 if (len < IEEE80211_HDRLEN + 2)
1858 pos = ((const u8 *) mgmt) + IEEE80211_HDRLEN + 1;
1860 end = ((const u8 *) mgmt) + len;
1862 wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
1863 act, MAC2STR(mgmt->sa));
1864 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
1865 os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
1866 wpa_printf(MSG_DEBUG, "WNM: Ignore unexpected WNM Action "
1872 case WNM_BSS_TRANS_MGMT_REQ:
1873 ieee802_11_rx_bss_trans_mgmt_req(wpa_s, pos, end,
1874 !(mgmt->da[0] & 0x01));
1876 case WNM_SLEEP_MODE_RESP:
1877 ieee802_11_rx_wnmsleep_resp(wpa_s, pos, end - pos);
1879 case WNM_NOTIFICATION_REQ:
1880 ieee802_11_rx_wnm_notif_req(wpa_s, mgmt->sa, pos, end - pos);
1882 case WNM_COLLOCATED_INTERFERENCE_REQ:
1883 ieee802_11_rx_wnm_coloc_intf_req(wpa_s, mgmt->sa, pos,
1887 wpa_printf(MSG_ERROR, "WNM: Unknown request");
1893 int wnm_send_coloc_intf_report(struct wpa_supplicant *wpa_s, u8 dialog_token,
1894 const struct wpabuf *elems)
1899 if (wpa_s->wpa_state < WPA_ASSOCIATED || !elems)
1902 wpa_printf(MSG_DEBUG, "WNM: Send Collocated Interference Report to "
1903 MACSTR " (dialog token %u)",
1904 MAC2STR(wpa_s->bssid), dialog_token);
1906 buf = wpabuf_alloc(3 + wpabuf_len(elems));
1910 wpabuf_put_u8(buf, WLAN_ACTION_WNM);
1911 wpabuf_put_u8(buf, WNM_COLLOCATED_INTERFERENCE_REPORT);
1912 wpabuf_put_u8(buf, dialog_token);
1913 wpabuf_put_buf(buf, elems);
1915 ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1916 wpa_s->own_addr, wpa_s->bssid,
1917 wpabuf_head_u8(buf), wpabuf_len(buf), 0);
1923 void wnm_set_coloc_intf_elems(struct wpa_supplicant *wpa_s,
1924 struct wpabuf *elems)
1926 wpabuf_free(wpa_s->coloc_intf_elems);
1927 if (elems && wpabuf_len(elems) == 0) {
1931 wpa_s->coloc_intf_elems = elems;
1933 if (wpa_s->conf->coloc_intf_reporting && wpa_s->coloc_intf_elems &&
1934 wpa_s->coloc_intf_dialog_token &&
1935 (wpa_s->coloc_intf_auto_report == 1 ||
1936 wpa_s->coloc_intf_auto_report == 3)) {
1937 /* TODO: Check that there has not been less than
1938 * wpa_s->coloc_intf_timeout * 200 TU from the last report.
1940 wnm_send_coloc_intf_report(wpa_s,
1941 wpa_s->coloc_intf_dialog_token,
1942 wpa_s->coloc_intf_elems);
1947 void wnm_clear_coloc_intf_reporting(struct wpa_supplicant *wpa_s)
1950 wpa_s->coloc_intf_dialog_token = 0;
1951 wpa_s->coloc_intf_auto_report = 0;
1952 #endif /* CONFIG_WNM */