1	// SPDX-License-Identifier: GPL-2.0
2	/*
3	* SME code for cfg80211
4	* both driver SME event handling and the SME implementation
5	* (for nl80211's connect() and wext)
6	*
7	* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
8	* Copyright (C) 2009, 2020, 2022-2023 Intel Corporation. All rights reserved.
9	* Copyright 2017 Intel Deutschland GmbH
10	*/
11
12	#include <linux/etherdevice.h>
13	#include <linux/if_arp.h>
14	#include <linux/slab.h>
15	#include <linux/workqueue.h>
16	#include <linux/wireless.h>
17	#include <linux/export.h>
18	#include <net/iw_handler.h>
19	#include <net/cfg80211.h>
20	#include <net/rtnetlink.h>
21	#include "nl80211.h"
22	#include "reg.h"
23	#include "rdev-ops.h"
24
25	/*
26	* Software SME in cfg80211, using auth/assoc/deauth calls to the
27	* driver. This is for implementing nl80211's connect/disconnect
28	* and wireless extensions (if configured.)
29	*/
30
31	struct cfg80211_conn {
32	struct cfg80211_connect_params params;
33	/* these are sub-states of the _CONNECTING sme_state */
34	enum {
35	CFG80211_CONN_SCANNING,
36	CFG80211_CONN_SCAN_AGAIN,
37	CFG80211_CONN_AUTHENTICATE_NEXT,
38	CFG80211_CONN_AUTHENTICATING,
39	CFG80211_CONN_AUTH_FAILED_TIMEOUT,
40	CFG80211_CONN_ASSOCIATE_NEXT,
41	CFG80211_CONN_ASSOCIATING,
42	CFG80211_CONN_ASSOC_FAILED,
43	CFG80211_CONN_ASSOC_FAILED_TIMEOUT,
44	CFG80211_CONN_DEAUTH,
45	CFG80211_CONN_ABANDON,
46	CFG80211_CONN_CONNECTED,
47	} state;
48	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
49	const u8 *ie;
50	size_t ie_len;
51	bool auto_auth, prev_bssid_valid;
52	};
53
54	static void cfg80211_sme_free(struct wireless_dev *wdev)
55	{
56	if (!wdev->conn)
57	return;
58
59	kfree(objp: wdev->conn->ie);
60	kfree(objp: wdev->conn);
61	wdev->conn = NULL;
62	}
63
64	static int cfg80211_conn_scan(struct wireless_dev *wdev)
65	{
66	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
67	struct cfg80211_scan_request *request;
68	int n_channels, err;
69
70	lockdep_assert_wiphy(wdev->wiphy);
71
72	if (rdev->scan_req || rdev->scan_msg)
73	return -EBUSY;
74
75	if (wdev->conn->params.channel)
76	n_channels = 1;
77	else
78	n_channels = ieee80211_get_num_supported_channels(wiphy: wdev->wiphy);
79
80	request = kzalloc(size: sizeof(*request) + sizeof(request->ssids[0]) +
81	sizeof(request->channels[0]) * n_channels,
82	GFP_KERNEL);
83	if (!request)
84	return -ENOMEM;
85
86	if (wdev->conn->params.channel) {
87	enum nl80211_band band = wdev->conn->params.channel->band;
88	struct ieee80211_supported_band *sband =
89	wdev->wiphy->bands[band];
90
91	if (!sband) {
92	kfree(objp: request);
93	return -EINVAL;
94	}
95	request->channels[0] = wdev->conn->params.channel;
96	request->rates[band] = (1 << sband->n_bitrates) - 1;
97	} else {
98	int i = 0, j;
99	enum nl80211_band band;
100	struct ieee80211_supported_band *bands;
101	struct ieee80211_channel *channel;
102
103	for (band = 0; band < NUM_NL80211_BANDS; band++) {
104	bands = wdev->wiphy->bands[band];
105	if (!bands)
106	continue;
107	for (j = 0; j < bands->n_channels; j++) {
108	channel = &bands->channels[j];
109	if (channel->flags & IEEE80211_CHAN_DISABLED)
110	continue;
111	request->channels[i++] = channel;
112	}
113	request->rates[band] = (1 << bands->n_bitrates) - 1;
114	}
115	n_channels = i;
116	}
117	request->n_channels = n_channels;
118	request->ssids = (void *)&request->channels[n_channels];
119	request->n_ssids = 1;
120
121	memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
122	wdev->conn->params.ssid_len);
123	request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
124
125	eth_broadcast_addr(addr: request->bssid);
126
127	request->wdev = wdev;
128	request->wiphy = &rdev->wiphy;
129	request->scan_start = jiffies;
130
131	rdev->scan_req = request;
132
133	err = rdev_scan(rdev, request);
134	if (!err) {
135	wdev->conn->state = CFG80211_CONN_SCANNING;
136	nl80211_send_scan_start(rdev, wdev);
137	dev_hold(dev: wdev->netdev);
138	} else {
139	rdev->scan_req = NULL;
140	kfree(objp: request);
141	}
142	return err;
143	}
144
145	static int cfg80211_conn_do_work(struct wireless_dev *wdev,
146	enum nl80211_timeout_reason *treason)
147	{
148	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
149	struct cfg80211_connect_params *params;
150	struct cfg80211_auth_request auth_req = {};
151	struct cfg80211_assoc_request req = {};
152	int err;
153
154	lockdep_assert_wiphy(wdev->wiphy);
155
156	if (!wdev->conn)
157	return 0;
158
159	params = &wdev->conn->params;
160
161	switch (wdev->conn->state) {
162	case CFG80211_CONN_SCANNING:
163	/* didn't find it during scan ... */
164	return -ENOENT;
165	case CFG80211_CONN_SCAN_AGAIN:
166	return cfg80211_conn_scan(wdev);
167	case CFG80211_CONN_AUTHENTICATE_NEXT:
168	if (WARN_ON(!rdev->ops->auth))
169	return -EOPNOTSUPP;
170	wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
171	auth_req.key = params->key;
172	auth_req.key_len = params->key_len;
173	auth_req.key_idx = params->key_idx;
174	auth_req.auth_type = params->auth_type;
175	auth_req.bss = cfg80211_get_bss(wiphy: &rdev->wiphy, channel: params->channel,
176	bssid: params->bssid,
177	ssid: params->ssid, ssid_len: params->ssid_len,
178	bss_type: IEEE80211_BSS_TYPE_ESS,
179	privacy: IEEE80211_PRIVACY_ANY);
180	auth_req.link_id = -1;
181	err = cfg80211_mlme_auth(rdev, dev: wdev->netdev, req: &auth_req);
182	cfg80211_put_bss(wiphy: &rdev->wiphy, bss: auth_req.bss);
183	return err;
184	case CFG80211_CONN_AUTH_FAILED_TIMEOUT:
185	*treason = NL80211_TIMEOUT_AUTH;
186	return -ENOTCONN;
187	case CFG80211_CONN_ASSOCIATE_NEXT:
188	if (WARN_ON(!rdev->ops->assoc))
189	return -EOPNOTSUPP;
190	wdev->conn->state = CFG80211_CONN_ASSOCIATING;
191	if (wdev->conn->prev_bssid_valid)
192	req.prev_bssid = wdev->conn->prev_bssid;
193	req.ie = params->ie;
194	req.ie_len = params->ie_len;
195	req.use_mfp = params->mfp != NL80211_MFP_NO;
196	req.crypto = params->crypto;
197	req.flags = params->flags;
198	req.ht_capa = params->ht_capa;
199	req.ht_capa_mask = params->ht_capa_mask;
200	req.vht_capa = params->vht_capa;
201	req.vht_capa_mask = params->vht_capa_mask;
202	req.link_id = -1;
203
204	req.bss = cfg80211_get_bss(wiphy: &rdev->wiphy, channel: params->channel,
205	bssid: params->bssid,
206	ssid: params->ssid, ssid_len: params->ssid_len,
207	bss_type: IEEE80211_BSS_TYPE_ESS,
208	privacy: IEEE80211_PRIVACY_ANY);
209	if (!req.bss) {
210	err = -ENOENT;
211	} else {
212	err = cfg80211_mlme_assoc(rdev, dev: wdev->netdev, req: &req);
213	cfg80211_put_bss(wiphy: &rdev->wiphy, bss: req.bss);
214	}
215
216	if (err)
217	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
218	NULL, ie_len: 0,
219	reason: WLAN_REASON_DEAUTH_LEAVING,
220	local_state_change: false);
221	return err;
222	case CFG80211_CONN_ASSOC_FAILED_TIMEOUT:
223	*treason = NL80211_TIMEOUT_ASSOC;
224	fallthrough;
225	case CFG80211_CONN_ASSOC_FAILED:
226	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
227	NULL, ie_len: 0,
228	reason: WLAN_REASON_DEAUTH_LEAVING, local_state_change: false);
229	return -ENOTCONN;
230	case CFG80211_CONN_DEAUTH:
231	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
232	NULL, ie_len: 0,
233	reason: WLAN_REASON_DEAUTH_LEAVING, local_state_change: false);
234	fallthrough;
235	case CFG80211_CONN_ABANDON:
236	/* free directly, disconnected event already sent */
237	cfg80211_sme_free(wdev);
238	return 0;
239	default:
240	return 0;
241	}
242	}
243
244	void cfg80211_conn_work(struct work_struct *work)
245	{
246	struct cfg80211_registered_device *rdev =
247	container_of(work, struct cfg80211_registered_device, conn_work);
248	struct wireless_dev *wdev;
249	u8 bssid_buf[ETH_ALEN], *bssid = NULL;
250	enum nl80211_timeout_reason treason;
251
252	wiphy_lock(wiphy: &rdev->wiphy);
253
254	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
255	if (!wdev->netdev)
256	continue;
257
258	if (!netif_running(dev: wdev->netdev))
259	continue;
260
261	if (!wdev->conn ||
262	wdev->conn->state == CFG80211_CONN_CONNECTED)
263	continue;
264
265	if (wdev->conn->params.bssid) {
266	memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
267	bssid = bssid_buf;
268	}
269	treason = NL80211_TIMEOUT_UNSPECIFIED;
270	if (cfg80211_conn_do_work(wdev, treason: &treason)) {
271	struct cfg80211_connect_resp_params cr;
272
273	memset(&cr, 0, sizeof(cr));
274	cr.status = -1;
275	cr.links[0].bssid = bssid;
276	cr.timeout_reason = treason;
277	__cfg80211_connect_result(dev: wdev->netdev, params: &cr, wextev: false);
278	}
279	}
280
281	wiphy_unlock(wiphy: &rdev->wiphy);
282	}
283
284	static void cfg80211_step_auth_next(struct cfg80211_conn *conn,
285	struct cfg80211_bss *bss)
286	{
287	memcpy(conn->bssid, bss->bssid, ETH_ALEN);
288	conn->params.bssid = conn->bssid;
289	conn->params.channel = bss->channel;
290	conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
291	}
292
293	/* Returned bss is reference counted and must be cleaned up appropriately. */
294	static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
295	{
296	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
297	struct cfg80211_bss *bss;
298
299	lockdep_assert_wiphy(wdev->wiphy);
300
301	bss = cfg80211_get_bss(wiphy: wdev->wiphy, channel: wdev->conn->params.channel,
302	bssid: wdev->conn->params.bssid,
303	ssid: wdev->conn->params.ssid,
304	ssid_len: wdev->conn->params.ssid_len,
305	bss_type: wdev->conn_bss_type,
306	IEEE80211_PRIVACY(wdev->conn->params.privacy));
307	if (!bss)
308	return NULL;
309
310	cfg80211_step_auth_next(conn: wdev->conn, bss);
311	schedule_work(work: &rdev->conn_work);
312
313	return bss;
314	}
315
316	void cfg80211_sme_scan_done(struct net_device *dev)
317	{
318	struct wireless_dev *wdev = dev->ieee80211_ptr;
319	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
320	struct cfg80211_bss *bss;
321
322	lockdep_assert_wiphy(wdev->wiphy);
323
324	if (!wdev->conn)
325	return;
326
327	if (wdev->conn->state != CFG80211_CONN_SCANNING &&
328	wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
329	return;
330
331	bss = cfg80211_get_conn_bss(wdev);
332	if (bss)
333	cfg80211_put_bss(wiphy: &rdev->wiphy, bss);
334	else
335	schedule_work(work: &rdev->conn_work);
336	}
337
338	void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
339	{
340	struct wiphy *wiphy = wdev->wiphy;
341	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
342	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
343	u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
344
345	lockdep_assert_wiphy(wdev->wiphy);
346
347	if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
348	return;
349
350	if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
351	wdev->conn->auto_auth &&
352	wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
353	/* select automatically between only open, shared, leap */
354	switch (wdev->conn->params.auth_type) {
355	case NL80211_AUTHTYPE_OPEN_SYSTEM:
356	if (wdev->connect_keys)
357	wdev->conn->params.auth_type =
358	NL80211_AUTHTYPE_SHARED_KEY;
359	else
360	wdev->conn->params.auth_type =
361	NL80211_AUTHTYPE_NETWORK_EAP;
362	break;
363	case NL80211_AUTHTYPE_SHARED_KEY:
364	wdev->conn->params.auth_type =
365	NL80211_AUTHTYPE_NETWORK_EAP;
366	break;
367	default:
368	/* huh? */
369	wdev->conn->params.auth_type =
370	NL80211_AUTHTYPE_OPEN_SYSTEM;
371	break;
372	}
373	wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
374	schedule_work(work: &rdev->conn_work);
375	} else if (status_code != WLAN_STATUS_SUCCESS) {
376	struct cfg80211_connect_resp_params cr;
377
378	memset(&cr, 0, sizeof(cr));
379	cr.status = status_code;
380	cr.links[0].bssid = mgmt->bssid;
381	cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
382	__cfg80211_connect_result(dev: wdev->netdev, params: &cr, wextev: false);
383	} else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
384	wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
385	schedule_work(work: &rdev->conn_work);
386	}
387	}
388
389	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
390	{
391	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
392
393	if (!wdev->conn)
394	return false;
395
396	if (status == WLAN_STATUS_SUCCESS) {
397	wdev->conn->state = CFG80211_CONN_CONNECTED;
398	return false;
399	}
400
401	if (wdev->conn->prev_bssid_valid) {
402	/*
403	* Some stupid APs don't accept reassoc, so we
404	* need to fall back to trying regular assoc;
405	* return true so no event is sent to userspace.
406	*/
407	wdev->conn->prev_bssid_valid = false;
408	wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
409	schedule_work(work: &rdev->conn_work);
410	return true;
411	}
412
413	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
414	schedule_work(work: &rdev->conn_work);
415	return false;
416	}
417
418	void cfg80211_sme_deauth(struct wireless_dev *wdev)
419	{
420	cfg80211_sme_free(wdev);
421	}
422
423	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
424	{
425	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
426
427	if (!wdev->conn)
428	return;
429
430	wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT;
431	schedule_work(work: &rdev->conn_work);
432	}
433
434	void cfg80211_sme_disassoc(struct wireless_dev *wdev)
435	{
436	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
437
438	if (!wdev->conn)
439	return;
440
441	wdev->conn->state = CFG80211_CONN_DEAUTH;
442	schedule_work(work: &rdev->conn_work);
443	}
444
445	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
446	{
447	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
448
449	if (!wdev->conn)
450	return;
451
452	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT;
453	schedule_work(work: &rdev->conn_work);
454	}
455
456	void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
457	{
458	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
459
460	if (!wdev->conn)
461	return;
462
463	wdev->conn->state = CFG80211_CONN_ABANDON;
464	schedule_work(work: &rdev->conn_work);
465	}
466
467	static void cfg80211_wdev_release_bsses(struct wireless_dev *wdev)
468	{
469	unsigned int link;
470
471	for_each_valid_link(wdev, link) {
472	if (!wdev->links[link].client.current_bss)
473	continue;
474	cfg80211_unhold_bss(bss: wdev->links[link].client.current_bss);
475	cfg80211_put_bss(wiphy: wdev->wiphy,
476	bss: &wdev->links[link].client.current_bss->pub);
477	wdev->links[link].client.current_bss = NULL;
478	}
479	}
480
481	void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask)
482	{
483	unsigned int link;
484
485	for_each_valid_link(wdev, link) {
486	if (!wdev->links[link].client.current_bss ||
487	!(link_mask & BIT(link)))
488	continue;
489	cfg80211_unhold_bss(bss: wdev->links[link].client.current_bss);
490	cfg80211_put_bss(wiphy: wdev->wiphy,
491	bss: &wdev->links[link].client.current_bss->pub);
492	wdev->links[link].client.current_bss = NULL;
493	}
494	}
495
496	static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
497	const u8 *ies, size_t ies_len,
498	const u8 **out_ies, size_t *out_ies_len)
499	{
500	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
501	u8 *buf;
502	size_t offs;
503
504	if (!rdev->wiphy.extended_capabilities_len ||
505	(ies && cfg80211_find_ie(eid: WLAN_EID_EXT_CAPABILITY, ies, len: ies_len))) {
506	*out_ies = kmemdup(p: ies, size: ies_len, GFP_KERNEL);
507	if (!*out_ies)
508	return -ENOMEM;
509	*out_ies_len = ies_len;
510	return 0;
511	}
512
513	buf = kmalloc(size: ies_len + rdev->wiphy.extended_capabilities_len + 2,
514	GFP_KERNEL);
515	if (!buf)
516	return -ENOMEM;
517
518	if (ies_len) {
519	static const u8 before_extcapa[] = {
520	/* not listing IEs expected to be created by driver */
521	WLAN_EID_RSN,
522	WLAN_EID_QOS_CAPA,
523	WLAN_EID_RRM_ENABLED_CAPABILITIES,
524	WLAN_EID_MOBILITY_DOMAIN,
525	WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
526	WLAN_EID_BSS_COEX_2040,
527	};
528
529	offs = ieee80211_ie_split(ies, ielen: ies_len, ids: before_extcapa,
530	ARRAY_SIZE(before_extcapa), offset: 0);
531	memcpy(buf, ies, offs);
532	/* leave a whole for extended capabilities IE */
533	memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
534	ies + offs, ies_len - offs);
535	} else {
536	offs = 0;
537	}
538
539	/* place extended capabilities IE (with only driver capabilities) */
540	buf[offs] = WLAN_EID_EXT_CAPABILITY;
541	buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
542	memcpy(buf + offs + 2,
543	rdev->wiphy.extended_capabilities,
544	rdev->wiphy.extended_capabilities_len);
545
546	*out_ies = buf;
547	*out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
548
549	return 0;
550	}
551
552	static int cfg80211_sme_connect(struct wireless_dev *wdev,
553	struct cfg80211_connect_params *connect,
554	const u8 *prev_bssid)
555	{
556	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
557	struct cfg80211_bss *bss;
558	int err;
559
560	if (!rdev->ops->auth || !rdev->ops->assoc)
561	return -EOPNOTSUPP;
562
563	cfg80211_wdev_release_bsses(wdev);
564
565	if (wdev->connected) {
566	cfg80211_sme_free(wdev);
567	wdev->connected = false;
568	}
569
570	if (wdev->conn)
571	return -EINPROGRESS;
572
573	wdev->conn = kzalloc(size: sizeof(*wdev->conn), GFP_KERNEL);
574	if (!wdev->conn)
575	return -ENOMEM;
576
577	/*
578	* Copy all parameters, and treat explicitly IEs, BSSID, SSID.
579	*/
580	memcpy(&wdev->conn->params, connect, sizeof(*connect));
581	if (connect->bssid) {
582	wdev->conn->params.bssid = wdev->conn->bssid;
583	memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
584	}
585
586	if (cfg80211_sme_get_conn_ies(wdev, ies: connect->ie, ies_len: connect->ie_len,
587	out_ies: &wdev->conn->ie,
588	out_ies_len: &wdev->conn->params.ie_len)) {
589	kfree(objp: wdev->conn);
590	wdev->conn = NULL;
591	return -ENOMEM;
592	}
593	wdev->conn->params.ie = wdev->conn->ie;
594
595	if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
596	wdev->conn->auto_auth = true;
597	/* start with open system ... should mostly work */
598	wdev->conn->params.auth_type =
599	NL80211_AUTHTYPE_OPEN_SYSTEM;
600	} else {
601	wdev->conn->auto_auth = false;
602	}
603
604	wdev->conn->params.ssid = wdev->u.client.ssid;
605	wdev->conn->params.ssid_len = wdev->u.client.ssid_len;
606
607	/* see if we have the bss already */
608	bss = cfg80211_get_bss(wiphy: wdev->wiphy, channel: wdev->conn->params.channel,
609	bssid: wdev->conn->params.bssid,
610	ssid: wdev->conn->params.ssid,
611	ssid_len: wdev->conn->params.ssid_len,
612	bss_type: wdev->conn_bss_type,
613	IEEE80211_PRIVACY(wdev->conn->params.privacy));
614
615	if (prev_bssid) {
616	memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
617	wdev->conn->prev_bssid_valid = true;
618	}
619
620	/* we're good if we have a matching bss struct */
621	if (bss) {
622	enum nl80211_timeout_reason treason;
623
624	cfg80211_step_auth_next(conn: wdev->conn, bss);
625	err = cfg80211_conn_do_work(wdev, treason: &treason);
626	cfg80211_put_bss(wiphy: wdev->wiphy, bss);
627	} else {
628	/* otherwise we'll need to scan for the AP first */
629	err = cfg80211_conn_scan(wdev);
630
631	/*
632	* If we can't scan right now, then we need to scan again
633	* after the current scan finished, since the parameters
634	* changed (unless we find a good AP anyway).
635	*/
636	if (err == -EBUSY) {
637	err = 0;
638	wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
639	}
640	}
641
642	if (err)
643	cfg80211_sme_free(wdev);
644
645	return err;
646	}
647
648	static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
649	{
650	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
651	int err;
652
653	if (!wdev->conn)
654	return 0;
655
656	if (!rdev->ops->deauth)
657	return -EOPNOTSUPP;
658
659	if (wdev->conn->state == CFG80211_CONN_SCANNING ||
660	wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
661	err = 0;
662	goto out;
663	}
664
665	/* wdev->conn->params.bssid must be set if > SCANNING */
666	err = cfg80211_mlme_deauth(rdev, dev: wdev->netdev,
667	bssid: wdev->conn->params.bssid,
668	NULL, ie_len: 0, reason, local_state_change: false);
669	out:
670	cfg80211_sme_free(wdev);
671	return err;
672	}
673
674	/*
675	* code shared for in-device and software SME
676	*/
677
678	static bool cfg80211_is_all_idle(void)
679	{
680	struct cfg80211_registered_device *rdev;
681	struct wireless_dev *wdev;
682	bool is_all_idle = true;
683
684	/*
685	* All devices must be idle as otherwise if you are actively
686	* scanning some new beacon hints could be learned and would
687	* count as new regulatory hints.
688	* Also if there is any other active beaconing interface we
689	* need not issue a disconnect hint and reset any info such
690	* as chan dfs state, etc.
691	*/
692	for_each_rdev(rdev) {
693	wiphy_lock(wiphy: &rdev->wiphy);
694	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
695	if (wdev->conn || wdev->connected ||
696	cfg80211_beaconing_iface_active(wdev))
697	is_all_idle = false;
698	}
699	wiphy_unlock(wiphy: &rdev->wiphy);
700	}
701
702	return is_all_idle;
703	}
704
705	static void disconnect_work(struct work_struct *work)
706	{
707	rtnl_lock();
708	if (cfg80211_is_all_idle())
709	regulatory_hint_disconnect();
710	rtnl_unlock();
711	}
712
713	DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
714
715	static void
716	cfg80211_connect_result_release_bsses(struct wireless_dev *wdev,
717	struct cfg80211_connect_resp_params *cr)
718	{
719	unsigned int link;
720
721	for_each_valid_link(cr, link) {
722	if (!cr->links[link].bss)
723	continue;
724	cfg80211_unhold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
725	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
726	}
727	}
728
729	/*
730	* API calls for drivers implementing connect/disconnect and
731	* SME event handling
732	*/
733
734	/* This method must consume bss one way or another */
735	void __cfg80211_connect_result(struct net_device *dev,
736	struct cfg80211_connect_resp_params *cr,
737	bool wextev)
738	{
739	struct wireless_dev *wdev = dev->ieee80211_ptr;
740	const struct element *country_elem = NULL;
741	const struct element *ssid;
742	const u8 *country_data;
743	u8 country_datalen;
744	#ifdef CONFIG_CFG80211_WEXT
745	union iwreq_data wrqu;
746	#endif
747	unsigned int link;
748	const u8 *connected_addr;
749	bool bss_not_found = false;
750
751	lockdep_assert_wiphy(wdev->wiphy);
752
753	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
754	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
755	goto out;
756
757	if (cr->valid_links) {
758	if (WARN_ON(!cr->ap_mld_addr))
759	goto out;
760
761	for_each_valid_link(cr, link) {
762	if (WARN_ON(!cr->links[link].addr))
763	goto out;
764	}
765
766	if (WARN_ON(wdev->connect_keys))
767	goto out;
768	}
769
770	wdev->unprot_beacon_reported = 0;
771	nl80211_send_connect_result(rdev: wiphy_to_rdev(wiphy: wdev->wiphy), netdev: dev, params: cr,
772	GFP_KERNEL);
773	connected_addr = cr->valid_links ? cr->ap_mld_addr : cr->links[0].bssid;
774
775	#ifdef CONFIG_CFG80211_WEXT
776	if (wextev && !cr->valid_links) {
777	if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) {
778	memset(&wrqu, 0, sizeof(wrqu));
779	wrqu.data.length = cr->req_ie_len;
780	wireless_send_event(dev, IWEVASSOCREQIE, wrqu: &wrqu,
781	extra: cr->req_ie);
782	}
783
784	if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) {
785	memset(&wrqu, 0, sizeof(wrqu));
786	wrqu.data.length = cr->resp_ie_len;
787	wireless_send_event(dev, IWEVASSOCRESPIE, wrqu: &wrqu,
788	extra: cr->resp_ie);
789	}
790
791	memset(&wrqu, 0, sizeof(wrqu));
792	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
793	if (connected_addr && cr->status == WLAN_STATUS_SUCCESS) {
794	memcpy(wrqu.ap_addr.sa_data, connected_addr, ETH_ALEN);
795	memcpy(wdev->wext.prev_bssid, connected_addr, ETH_ALEN);
796	wdev->wext.prev_bssid_valid = true;
797	}
798	wireless_send_event(dev, SIOCGIWAP, wrqu: &wrqu, NULL);
799	}
800	#endif
801
802	if (cr->status == WLAN_STATUS_SUCCESS) {
803	if (!wiphy_to_rdev(wiphy: wdev->wiphy)->ops->connect) {
804	for_each_valid_link(cr, link) {
805	if (WARN_ON_ONCE(!cr->links[link].bss))
806	break;
807	}
808	}
809
810	for_each_valid_link(cr, link) {
811	/* don't do extra lookups for failures */
812	if (cr->links[link].status != WLAN_STATUS_SUCCESS)
813	continue;
814
815	if (cr->links[link].bss)
816	continue;
817
818	cr->links[link].bss =
819	cfg80211_get_bss(wiphy: wdev->wiphy, NULL,
820	bssid: cr->links[link].bssid,
821	ssid: wdev->u.client.ssid,
822	ssid_len: wdev->u.client.ssid_len,
823	bss_type: wdev->conn_bss_type,
824	privacy: IEEE80211_PRIVACY_ANY);
825	if (!cr->links[link].bss) {
826	bss_not_found = true;
827	break;
828	}
829	cfg80211_hold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
830	}
831	}
832
833	cfg80211_wdev_release_bsses(wdev);
834
835	if (cr->status != WLAN_STATUS_SUCCESS) {
836	kfree_sensitive(objp: wdev->connect_keys);
837	wdev->connect_keys = NULL;
838	wdev->u.client.ssid_len = 0;
839	wdev->conn_owner_nlportid = 0;
840	cfg80211_connect_result_release_bsses(wdev, cr);
841	cfg80211_sme_free(wdev);
842	return;
843	}
844
845	if (WARN_ON(bss_not_found)) {
846	cfg80211_connect_result_release_bsses(wdev, cr);
847	return;
848	}
849
850	memset(wdev->links, 0, sizeof(wdev->links));
851	for_each_valid_link(cr, link) {
852	if (cr->links[link].status == WLAN_STATUS_SUCCESS)
853	continue;
854	cr->valid_links &= ~BIT(link);
855	/* don't require bss pointer for failed links */
856	if (!cr->links[link].bss)
857	continue;
858	cfg80211_unhold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
859	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
860	}
861	wdev->valid_links = cr->valid_links;
862	for_each_valid_link(cr, link)
863	wdev->links[link].client.current_bss =
864	bss_from_pub(pub: cr->links[link].bss);
865	wdev->connected = true;
866	ether_addr_copy(dst: wdev->u.client.connected_addr, src: connected_addr);
867	if (cr->valid_links) {
868	for_each_valid_link(cr, link)
869	memcpy(wdev->links[link].addr, cr->links[link].addr,
870	ETH_ALEN);
871	}
872
873	cfg80211_upload_connect_keys(wdev);
874
875	rcu_read_lock();
876	for_each_valid_link(cr, link) {
877	country_elem =
878	ieee80211_bss_get_elem(bss: cr->links[link].bss,
879	id: WLAN_EID_COUNTRY);
880	if (country_elem)
881	break;
882	}
883	if (!country_elem) {
884	rcu_read_unlock();
885	return;
886	}
887
888	country_datalen = country_elem->datalen;
889	country_data = kmemdup(p: country_elem->data, size: country_datalen, GFP_ATOMIC);
890	rcu_read_unlock();
891
892	if (!country_data)
893	return;
894
895	regulatory_hint_country_ie(wiphy: wdev->wiphy,
896	band: cr->links[link].bss->channel->band,
897	country_ie: country_data, country_ie_len: country_datalen);
898	kfree(objp: country_data);
899
900	if (!wdev->u.client.ssid_len) {
901	rcu_read_lock();
902	for_each_valid_link(cr, link) {
903	ssid = ieee80211_bss_get_elem(bss: cr->links[link].bss,
904	id: WLAN_EID_SSID);
905
906	if (!ssid || !ssid->datalen)
907	continue;
908
909	memcpy(wdev->u.client.ssid, ssid->data, ssid->datalen);
910	wdev->u.client.ssid_len = ssid->datalen;
911	break;
912	}
913	rcu_read_unlock();
914	}
915
916	return;
917	out:
918	for_each_valid_link(cr, link)
919	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
920	}
921
922	static void cfg80211_update_link_bss(struct wireless_dev *wdev,
923	struct cfg80211_bss **bss)
924	{
925	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
926	struct cfg80211_internal_bss *ibss;
927
928	if (!*bss)
929	return;
930
931	ibss = bss_from_pub(pub: *bss);
932	if (list_empty(head: &ibss->list)) {
933	struct cfg80211_bss *found = NULL, *tmp = *bss;
934
935	found = cfg80211_get_bss(wiphy: wdev->wiphy, NULL,
936	bssid: (*bss)->bssid,
937	ssid: wdev->u.client.ssid,
938	ssid_len: wdev->u.client.ssid_len,
939	bss_type: wdev->conn_bss_type,
940	privacy: IEEE80211_PRIVACY_ANY);
941	if (found) {
942	/* The same BSS is already updated so use it
943	* instead, as it has latest info.
944	*/
945	*bss = found;
946	} else {
947	/* Update with BSS provided by driver, it will
948	* be freshly added and ref cnted, we can free
949	* the old one.
950	*
951	* signal_valid can be false, as we are not
952	* expecting the BSS to be found.
953	*
954	* keep the old timestamp to avoid confusion
955	*/
956	cfg80211_bss_update(rdev, tmp: ibss, signal_valid: false,
957	ts: ibss->ts);
958	}
959
960	cfg80211_put_bss(wiphy: wdev->wiphy, bss: tmp);
961	}
962	}
963
964	/* Consumes bss object(s) one way or another */
965	void cfg80211_connect_done(struct net_device *dev,
966	struct cfg80211_connect_resp_params *params,
967	gfp_t gfp)
968	{
969	struct wireless_dev *wdev = dev->ieee80211_ptr;
970	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
971	struct cfg80211_event *ev;
972	unsigned long flags;
973	u8 *next;
974	size_t link_info_size = 0;
975	unsigned int link;
976
977	for_each_valid_link(params, link) {
978	cfg80211_update_link_bss(wdev, bss: &params->links[link].bss);
979	link_info_size += params->links[link].bssid ? ETH_ALEN : 0;
980	link_info_size += params->links[link].addr ? ETH_ALEN : 0;
981	}
982
983	ev = kzalloc(size: sizeof(*ev) + (params->ap_mld_addr ? ETH_ALEN : 0) +
984	params->req_ie_len + params->resp_ie_len +
985	params->fils.kek_len + params->fils.pmk_len +
986	(params->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
987	flags: gfp);
988
989	if (!ev) {
990	for_each_valid_link(params, link)
991	cfg80211_put_bss(wiphy: wdev->wiphy,
992	bss: params->links[link].bss);
993	return;
994	}
995
996	ev->type = EVENT_CONNECT_RESULT;
997	next = ((u8 *)ev) + sizeof(*ev);
998	if (params->ap_mld_addr) {
999	ev->cr.ap_mld_addr = next;
1000	memcpy((void *)ev->cr.ap_mld_addr, params->ap_mld_addr,
1001	ETH_ALEN);
1002	next += ETH_ALEN;
1003	}
1004	if (params->req_ie_len) {
1005	ev->cr.req_ie = next;
1006	ev->cr.req_ie_len = params->req_ie_len;
1007	memcpy((void *)ev->cr.req_ie, params->req_ie,
1008	params->req_ie_len);
1009	next += params->req_ie_len;
1010	}
1011	if (params->resp_ie_len) {
1012	ev->cr.resp_ie = next;
1013	ev->cr.resp_ie_len = params->resp_ie_len;
1014	memcpy((void *)ev->cr.resp_ie, params->resp_ie,
1015	params->resp_ie_len);
1016	next += params->resp_ie_len;
1017	}
1018	if (params->fils.kek_len) {
1019	ev->cr.fils.kek = next;
1020	ev->cr.fils.kek_len = params->fils.kek_len;
1021	memcpy((void *)ev->cr.fils.kek, params->fils.kek,
1022	params->fils.kek_len);
1023	next += params->fils.kek_len;
1024	}
1025	if (params->fils.pmk_len) {
1026	ev->cr.fils.pmk = next;
1027	ev->cr.fils.pmk_len = params->fils.pmk_len;
1028	memcpy((void *)ev->cr.fils.pmk, params->fils.pmk,
1029	params->fils.pmk_len);
1030	next += params->fils.pmk_len;
1031	}
1032	if (params->fils.pmkid) {
1033	ev->cr.fils.pmkid = next;
1034	memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid,
1035	WLAN_PMKID_LEN);
1036	next += WLAN_PMKID_LEN;
1037	}
1038	ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num;
1039	if (params->fils.update_erp_next_seq_num)
1040	ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num;
1041	ev->cr.valid_links = params->valid_links;
1042	for_each_valid_link(params, link) {
1043	if (params->links[link].bss)
1044	cfg80211_hold_bss(
1045	bss: bss_from_pub(pub: params->links[link].bss));
1046	ev->cr.links[link].bss = params->links[link].bss;
1047
1048	if (params->links[link].addr) {
1049	ev->cr.links[link].addr = next;
1050	memcpy((void *)ev->cr.links[link].addr,
1051	params->links[link].addr,
1052	ETH_ALEN);
1053	next += ETH_ALEN;
1054	}
1055	if (params->links[link].bssid) {
1056	ev->cr.links[link].bssid = next;
1057	memcpy((void *)ev->cr.links[link].bssid,
1058	params->links[link].bssid,
1059	ETH_ALEN);
1060	next += ETH_ALEN;
1061	}
1062	}
1063	ev->cr.status = params->status;
1064	ev->cr.timeout_reason = params->timeout_reason;
1065
1066	spin_lock_irqsave(&wdev->event_lock, flags);
1067	list_add_tail(new: &ev->list, head: &wdev->event_list);
1068	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1069	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1070	}
1071	EXPORT_SYMBOL(cfg80211_connect_done);
1072
1073	/* Consumes bss object one way or another */
1074	void __cfg80211_roamed(struct wireless_dev *wdev,
1075	struct cfg80211_roam_info *info)
1076	{
1077	#ifdef CONFIG_CFG80211_WEXT
1078	union iwreq_data wrqu;
1079	#endif
1080	unsigned int link;
1081	const u8 *connected_addr;
1082
1083	lockdep_assert_wiphy(wdev->wiphy);
1084
1085	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1086	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
1087	goto out;
1088
1089	if (WARN_ON(!wdev->connected))
1090	goto out;
1091
1092	if (info->valid_links) {
1093	if (WARN_ON(!info->ap_mld_addr))
1094	goto out;
1095
1096	for_each_valid_link(info, link) {
1097	if (WARN_ON(!info->links[link].addr))
1098	goto out;
1099	}
1100	}
1101
1102	cfg80211_wdev_release_bsses(wdev);
1103
1104	for_each_valid_link(info, link) {
1105	if (WARN_ON(!info->links[link].bss))
1106	goto out;
1107	}
1108
1109	memset(wdev->links, 0, sizeof(wdev->links));
1110	wdev->valid_links = info->valid_links;
1111	for_each_valid_link(info, link) {
1112	cfg80211_hold_bss(bss: bss_from_pub(pub: info->links[link].bss));
1113	wdev->links[link].client.current_bss =
1114	bss_from_pub(pub: info->links[link].bss);
1115	}
1116
1117	connected_addr = info->valid_links ?
1118	info->ap_mld_addr :
1119	info->links[0].bss->bssid;
1120	ether_addr_copy(dst: wdev->u.client.connected_addr, src: connected_addr);
1121	if (info->valid_links) {
1122	for_each_valid_link(info, link)
1123	memcpy(wdev->links[link].addr, info->links[link].addr,
1124	ETH_ALEN);
1125	}
1126	wdev->unprot_beacon_reported = 0;
1127	nl80211_send_roamed(rdev: wiphy_to_rdev(wiphy: wdev->wiphy),
1128	netdev: wdev->netdev, info, GFP_KERNEL);
1129
1130	#ifdef CONFIG_CFG80211_WEXT
1131	if (!info->valid_links) {
1132	if (info->req_ie) {
1133	memset(&wrqu, 0, sizeof(wrqu));
1134	wrqu.data.length = info->req_ie_len;
1135	wireless_send_event(dev: wdev->netdev, IWEVASSOCREQIE,
1136	wrqu: &wrqu, extra: info->req_ie);
1137	}
1138
1139	if (info->resp_ie) {
1140	memset(&wrqu, 0, sizeof(wrqu));
1141	wrqu.data.length = info->resp_ie_len;
1142	wireless_send_event(dev: wdev->netdev, IWEVASSOCRESPIE,
1143	wrqu: &wrqu, extra: info->resp_ie);
1144	}
1145
1146	memset(&wrqu, 0, sizeof(wrqu));
1147	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1148	memcpy(wrqu.ap_addr.sa_data, connected_addr, ETH_ALEN);
1149	memcpy(wdev->wext.prev_bssid, connected_addr, ETH_ALEN);
1150	wdev->wext.prev_bssid_valid = true;
1151	wireless_send_event(dev: wdev->netdev, SIOCGIWAP, wrqu: &wrqu, NULL);
1152	}
1153	#endif
1154
1155	return;
1156	out:
1157	for_each_valid_link(info, link)
1158	cfg80211_put_bss(wiphy: wdev->wiphy, bss: info->links[link].bss);
1159	}
1160
1161	/* Consumes info->links.bss object(s) one way or another */
1162	void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
1163	gfp_t gfp)
1164	{
1165	struct wireless_dev *wdev = dev->ieee80211_ptr;
1166	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1167	struct cfg80211_event *ev;
1168	unsigned long flags;
1169	u8 *next;
1170	unsigned int link;
1171	size_t link_info_size = 0;
1172	bool bss_not_found = false;
1173
1174	for_each_valid_link(info, link) {
1175	link_info_size += info->links[link].addr ? ETH_ALEN : 0;
1176	link_info_size += info->links[link].bssid ? ETH_ALEN : 0;
1177
1178	if (info->links[link].bss)
1179	continue;
1180
1181	info->links[link].bss =
1182	cfg80211_get_bss(wiphy: wdev->wiphy,
1183	channel: info->links[link].channel,
1184	bssid: info->links[link].bssid,
1185	ssid: wdev->u.client.ssid,
1186	ssid_len: wdev->u.client.ssid_len,
1187	bss_type: wdev->conn_bss_type,
1188	privacy: IEEE80211_PRIVACY_ANY);
1189
1190	if (!info->links[link].bss) {
1191	bss_not_found = true;
1192	break;
1193	}
1194	}
1195
1196	if (WARN_ON(bss_not_found))
1197	goto out;
1198
1199	ev = kzalloc(size: sizeof(*ev) + info->req_ie_len + info->resp_ie_len +
1200	info->fils.kek_len + info->fils.pmk_len +
1201	(info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
1202	(info->ap_mld_addr ? ETH_ALEN : 0) + link_info_size, flags: gfp);
1203	if (!ev)
1204	goto out;
1205
1206	ev->type = EVENT_ROAMED;
1207	next = ((u8 *)ev) + sizeof(*ev);
1208	if (info->req_ie_len) {
1209	ev->rm.req_ie = next;
1210	ev->rm.req_ie_len = info->req_ie_len;
1211	memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
1212	next += info->req_ie_len;
1213	}
1214	if (info->resp_ie_len) {
1215	ev->rm.resp_ie = next;
1216	ev->rm.resp_ie_len = info->resp_ie_len;
1217	memcpy((void *)ev->rm.resp_ie, info->resp_ie,
1218	info->resp_ie_len);
1219	next += info->resp_ie_len;
1220	}
1221	if (info->fils.kek_len) {
1222	ev->rm.fils.kek = next;
1223	ev->rm.fils.kek_len = info->fils.kek_len;
1224	memcpy((void *)ev->rm.fils.kek, info->fils.kek,
1225	info->fils.kek_len);
1226	next += info->fils.kek_len;
1227	}
1228	if (info->fils.pmk_len) {
1229	ev->rm.fils.pmk = next;
1230	ev->rm.fils.pmk_len = info->fils.pmk_len;
1231	memcpy((void *)ev->rm.fils.pmk, info->fils.pmk,
1232	info->fils.pmk_len);
1233	next += info->fils.pmk_len;
1234	}
1235	if (info->fils.pmkid) {
1236	ev->rm.fils.pmkid = next;
1237	memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid,
1238	WLAN_PMKID_LEN);
1239	next += WLAN_PMKID_LEN;
1240	}
1241	ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num;
1242	if (info->fils.update_erp_next_seq_num)
1243	ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num;
1244	if (info->ap_mld_addr) {
1245	ev->rm.ap_mld_addr = next;
1246	memcpy((void *)ev->rm.ap_mld_addr, info->ap_mld_addr,
1247	ETH_ALEN);
1248	next += ETH_ALEN;
1249	}
1250	ev->rm.valid_links = info->valid_links;
1251	for_each_valid_link(info, link) {
1252	ev->rm.links[link].bss = info->links[link].bss;
1253
1254	if (info->links[link].addr) {
1255	ev->rm.links[link].addr = next;
1256	memcpy((void *)ev->rm.links[link].addr,
1257	info->links[link].addr,
1258	ETH_ALEN);
1259	next += ETH_ALEN;
1260	}
1261
1262	if (info->links[link].bssid) {
1263	ev->rm.links[link].bssid = next;
1264	memcpy((void *)ev->rm.links[link].bssid,
1265	info->links[link].bssid,
1266	ETH_ALEN);
1267	next += ETH_ALEN;
1268	}
1269	}
1270
1271	spin_lock_irqsave(&wdev->event_lock, flags);
1272	list_add_tail(new: &ev->list, head: &wdev->event_list);
1273	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1274	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1275
1276	return;
1277	out:
1278	for_each_valid_link(info, link)
1279	cfg80211_put_bss(wiphy: wdev->wiphy, bss: info->links[link].bss);
1280
1281	}
1282	EXPORT_SYMBOL(cfg80211_roamed);
1283
1284	void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *peer_addr,
1285	const u8 *td_bitmap, u8 td_bitmap_len)
1286	{
1287	lockdep_assert_wiphy(wdev->wiphy);
1288
1289	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1290	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT &&
1291	wdev->iftype != NL80211_IFTYPE_AP &&
1292	wdev->iftype != NL80211_IFTYPE_P2P_GO))
1293	return;
1294
1295	if (wdev->iftype == NL80211_IFTYPE_STATION ||
1296	wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) {
1297	if (WARN_ON(!wdev->connected) ||
1298	WARN_ON(!ether_addr_equal(wdev->u.client.connected_addr, peer_addr)))
1299	return;
1300	}
1301
1302	nl80211_send_port_authorized(rdev: wiphy_to_rdev(wiphy: wdev->wiphy), netdev: wdev->netdev,
1303	peer_addr, td_bitmap, td_bitmap_len);
1304	}
1305
1306	void cfg80211_port_authorized(struct net_device *dev, const u8 *peer_addr,
1307	const u8 *td_bitmap, u8 td_bitmap_len, gfp_t gfp)
1308	{
1309	struct wireless_dev *wdev = dev->ieee80211_ptr;
1310	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1311	struct cfg80211_event *ev;
1312	unsigned long flags;
1313
1314	if (WARN_ON(!peer_addr))
1315	return;
1316
1317	ev = kzalloc(size: sizeof(*ev) + td_bitmap_len, flags: gfp);
1318	if (!ev)
1319	return;
1320
1321	ev->type = EVENT_PORT_AUTHORIZED;
1322	memcpy(ev->pa.peer_addr, peer_addr, ETH_ALEN);
1323	ev->pa.td_bitmap = ((u8 *)ev) + sizeof(*ev);
1324	ev->pa.td_bitmap_len = td_bitmap_len;
1325	memcpy((void *)ev->pa.td_bitmap, td_bitmap, td_bitmap_len);
1326
1327	/*
1328	* Use the wdev event list so that if there are pending
1329	* connected/roamed events, they will be reported first.
1330	*/
1331	spin_lock_irqsave(&wdev->event_lock, flags);
1332	list_add_tail(new: &ev->list, head: &wdev->event_list);
1333	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1334	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1335	}
1336	EXPORT_SYMBOL(cfg80211_port_authorized);
1337
1338	void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
1339	size_t ie_len, u16 reason, bool from_ap)
1340	{
1341	struct wireless_dev *wdev = dev->ieee80211_ptr;
1342	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1343	int i;
1344	#ifdef CONFIG_CFG80211_WEXT
1345	union iwreq_data wrqu;
1346	#endif
1347
1348	lockdep_assert_wiphy(wdev->wiphy);
1349
1350	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1351	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
1352	return;
1353
1354	cfg80211_wdev_release_bsses(wdev);
1355	wdev->connected = false;
1356	wdev->u.client.ssid_len = 0;
1357	wdev->conn_owner_nlportid = 0;
1358	kfree_sensitive(objp: wdev->connect_keys);
1359	wdev->connect_keys = NULL;
1360
1361	nl80211_send_disconnected(rdev, netdev: dev, reason, ie, ie_len, from_ap);
1362
1363	/* stop critical protocol if supported */
1364	if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
1365	rdev->crit_proto_nlportid = 0;
1366	rdev_crit_proto_stop(rdev, wdev);
1367	}
1368
1369	/*
1370	* Delete all the keys ... pairwise keys can't really
1371	* exist any more anyway, but default keys might.
1372	*/
1373	if (rdev->ops->del_key) {
1374	int max_key_idx = 5;
1375
1376	if (wiphy_ext_feature_isset(
1377	wiphy: wdev->wiphy,
1378	ftidx: NL80211_EXT_FEATURE_BEACON_PROTECTION) ||
1379	wiphy_ext_feature_isset(
1380	wiphy: wdev->wiphy,
1381	ftidx: NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
1382	max_key_idx = 7;
1383	for (i = 0; i <= max_key_idx; i++)
1384	rdev_del_key(rdev, netdev: dev, link_id: -1, key_index: i, pairwise: false, NULL);
1385	}
1386
1387	rdev_set_qos_map(rdev, dev, NULL);
1388
1389	#ifdef CONFIG_CFG80211_WEXT
1390	memset(&wrqu, 0, sizeof(wrqu));
1391	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1392	wireless_send_event(dev, SIOCGIWAP, wrqu: &wrqu, NULL);
1393	wdev->wext.connect.ssid_len = 0;
1394	#endif
1395
1396	schedule_work(work: &cfg80211_disconnect_work);
1397	}
1398
1399	void cfg80211_disconnected(struct net_device *dev, u16 reason,
1400	const u8 *ie, size_t ie_len,
1401	bool locally_generated, gfp_t gfp)
1402	{
1403	struct wireless_dev *wdev = dev->ieee80211_ptr;
1404	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1405	struct cfg80211_event *ev;
1406	unsigned long flags;
1407
1408	ev = kzalloc(size: sizeof(*ev) + ie_len, flags: gfp);
1409	if (!ev)
1410	return;
1411
1412	ev->type = EVENT_DISCONNECTED;
1413	ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
1414	ev->dc.ie_len = ie_len;
1415	memcpy((void *)ev->dc.ie, ie, ie_len);
1416	ev->dc.reason = reason;
1417	ev->dc.locally_generated = locally_generated;
1418
1419	spin_lock_irqsave(&wdev->event_lock, flags);
1420	list_add_tail(new: &ev->list, head: &wdev->event_list);
1421	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1422	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1423	}
1424	EXPORT_SYMBOL(cfg80211_disconnected);
1425
1426	/*
1427	* API calls for nl80211/wext compatibility code
1428	*/
1429	int cfg80211_connect(struct cfg80211_registered_device *rdev,
1430	struct net_device *dev,
1431	struct cfg80211_connect_params *connect,
1432	struct cfg80211_cached_keys *connkeys,
1433	const u8 *prev_bssid)
1434	{
1435	struct wireless_dev *wdev = dev->ieee80211_ptr;
1436	int err;
1437
1438	lockdep_assert_wiphy(wdev->wiphy);
1439
1440	/*
1441	* If we have an ssid_len, we're trying to connect or are
1442	* already connected, so reject a new SSID unless it's the
1443	* same (which is the case for re-association.)
1444	*/
1445	if (wdev->u.client.ssid_len &&
1446	(wdev->u.client.ssid_len != connect->ssid_len ||
1447	memcmp(p: wdev->u.client.ssid, q: connect->ssid, size: wdev->u.client.ssid_len)))
1448	return -EALREADY;
1449
1450	/*
1451	* If connected, reject (re-)association unless prev_bssid
1452	* matches the current BSSID.
1453	*/
1454	if (wdev->connected) {
1455	if (!prev_bssid)
1456	return -EALREADY;
1457	if (!ether_addr_equal(addr1: prev_bssid,
1458	addr2: wdev->u.client.connected_addr))
1459	return -ENOTCONN;
1460	}
1461
1462	/*
1463	* Reject if we're in the process of connecting with WEP,
1464	* this case isn't very interesting and trying to handle
1465	* it would make the code much more complex.
1466	*/
1467	if (wdev->connect_keys)
1468	return -EINPROGRESS;
1469
1470	cfg80211_oper_and_ht_capa(ht_capa: &connect->ht_capa_mask,
1471	ht_capa_mask: rdev->wiphy.ht_capa_mod_mask);
1472	cfg80211_oper_and_vht_capa(vht_capa: &connect->vht_capa_mask,
1473	vht_capa_mask: rdev->wiphy.vht_capa_mod_mask);
1474
1475	if (connkeys && connkeys->def >= 0) {
1476	int idx;
1477	u32 cipher;
1478
1479	idx = connkeys->def;
1480	cipher = connkeys->params[idx].cipher;
1481	/* If given a WEP key we may need it for shared key auth */
1482	if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1483	cipher == WLAN_CIPHER_SUITE_WEP104) {
1484	connect->key_idx = idx;
1485	connect->key = connkeys->params[idx].key;
1486	connect->key_len = connkeys->params[idx].key_len;
1487
1488	/*
1489	* If ciphers are not set (e.g. when going through
1490	* iwconfig), we have to set them appropriately here.
1491	*/
1492	if (connect->crypto.cipher_group == 0)
1493	connect->crypto.cipher_group = cipher;
1494
1495	if (connect->crypto.n_ciphers_pairwise == 0) {
1496	connect->crypto.n_ciphers_pairwise = 1;
1497	connect->crypto.ciphers_pairwise[0] = cipher;
1498	}
1499	}
1500	} else {
1501	if (WARN_ON(connkeys))
1502	return -EINVAL;
1503
1504	/* connect can point to wdev->wext.connect which
1505	* can hold key data from a previous connection
1506	*/
1507	connect->key = NULL;
1508	connect->key_len = 0;
1509	connect->key_idx = 0;
1510	}
1511
1512	wdev->connect_keys = connkeys;
1513	memcpy(wdev->u.client.ssid, connect->ssid, connect->ssid_len);
1514	wdev->u.client.ssid_len = connect->ssid_len;
1515
1516	wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1517	IEEE80211_BSS_TYPE_ESS;
1518
1519	if (!rdev->ops->connect)
1520	err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1521	else
1522	err = rdev_connect(rdev, dev, sme: connect);
1523
1524	if (err) {
1525	wdev->connect_keys = NULL;
1526	/*
1527	* This could be reassoc getting refused, don't clear
1528	* ssid_len in that case.
1529	*/
1530	if (!wdev->connected)
1531	wdev->u.client.ssid_len = 0;
1532	return err;
1533	}
1534
1535	return 0;
1536	}
1537
1538	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1539	struct net_device *dev, u16 reason, bool wextev)
1540	{
1541	struct wireless_dev *wdev = dev->ieee80211_ptr;
1542	int err = 0;
1543
1544	lockdep_assert_wiphy(wdev->wiphy);
1545
1546	kfree_sensitive(objp: wdev->connect_keys);
1547	wdev->connect_keys = NULL;
1548
1549	wdev->conn_owner_nlportid = 0;
1550
1551	if (wdev->conn)
1552	err = cfg80211_sme_disconnect(wdev, reason);
1553	else if (!rdev->ops->disconnect)
1554	cfg80211_mlme_down(rdev, dev);
1555	else if (wdev->u.client.ssid_len)
1556	err = rdev_disconnect(rdev, dev, reason_code: reason);
1557
1558	/*
1559	* Clear ssid_len unless we actually were fully connected,
1560	* in which case cfg80211_disconnected() will take care of
1561	* this later.
1562	*/
1563	if (!wdev->connected)
1564	wdev->u.client.ssid_len = 0;
1565
1566	return err;
1567	}
1568
1569	/*
1570	* Used to clean up after the connection / connection attempt owner socket
1571	* disconnects
1572	*/
1573	void cfg80211_autodisconnect_wk(struct work_struct *work)
1574	{
1575	struct wireless_dev *wdev =
1576	container_of(work, struct wireless_dev, disconnect_wk);
1577	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1578
1579	wiphy_lock(wiphy: wdev->wiphy);
1580
1581	if (wdev->conn_owner_nlportid) {
1582	switch (wdev->iftype) {
1583	case NL80211_IFTYPE_ADHOC:
1584	cfg80211_leave_ibss(rdev, dev: wdev->netdev, nowext: false);
1585	break;
1586	case NL80211_IFTYPE_AP:
1587	case NL80211_IFTYPE_P2P_GO:
1588	cfg80211_stop_ap(rdev, dev: wdev->netdev, link: -1, notify: false);
1589	break;
1590	case NL80211_IFTYPE_MESH_POINT:
1591	cfg80211_leave_mesh(rdev, dev: wdev->netdev);
1592	break;
1593	case NL80211_IFTYPE_STATION:
1594	case NL80211_IFTYPE_P2P_CLIENT:
1595	/*
1596	* Use disconnect_bssid if still connecting and
1597	* ops->disconnect not implemented. Otherwise we can
1598	* use cfg80211_disconnect.
1599	*/
1600	if (rdev->ops->disconnect || wdev->connected)
1601	cfg80211_disconnect(rdev, dev: wdev->netdev,
1602	reason: WLAN_REASON_DEAUTH_LEAVING,
1603	wextev: true);
1604	else
1605	cfg80211_mlme_deauth(rdev, dev: wdev->netdev,
1606	bssid: wdev->disconnect_bssid,
1607	NULL, ie_len: 0,
1608	reason: WLAN_REASON_DEAUTH_LEAVING,
1609	local_state_change: false);
1610	break;
1611	default:
1612	break;
1613	}
1614	}
1615
1616	wiphy_unlock(wiphy: wdev->wiphy);
1617	}
1618