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,
213	req: &req, NULL);
214	cfg80211_put_bss(wiphy: &rdev->wiphy, bss: req.bss);
215	}
216
217	if (err)
218	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
219	NULL, ie_len: 0,
220	reason: WLAN_REASON_DEAUTH_LEAVING,
221	local_state_change: false);
222	return err;
223	case CFG80211_CONN_ASSOC_FAILED_TIMEOUT:
224	*treason = NL80211_TIMEOUT_ASSOC;
225	fallthrough;
226	case CFG80211_CONN_ASSOC_FAILED:
227	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
228	NULL, ie_len: 0,
229	reason: WLAN_REASON_DEAUTH_LEAVING, local_state_change: false);
230	return -ENOTCONN;
231	case CFG80211_CONN_DEAUTH:
232	cfg80211_mlme_deauth(rdev, dev: wdev->netdev, bssid: params->bssid,
233	NULL, ie_len: 0,
234	reason: WLAN_REASON_DEAUTH_LEAVING, local_state_change: false);
235	fallthrough;
236	case CFG80211_CONN_ABANDON:
237	/* free directly, disconnected event already sent */
238	cfg80211_sme_free(wdev);
239	return 0;
240	default:
241	return 0;
242	}
243	}
244
245	void cfg80211_conn_work(struct work_struct *work)
246	{
247	struct cfg80211_registered_device *rdev =
248	container_of(work, struct cfg80211_registered_device, conn_work);
249	struct wireless_dev *wdev;
250	u8 bssid_buf[ETH_ALEN], *bssid = NULL;
251	enum nl80211_timeout_reason treason;
252
253	wiphy_lock(wiphy: &rdev->wiphy);
254
255	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
256	if (!wdev->netdev)
257	continue;
258
259	if (!netif_running(dev: wdev->netdev))
260	continue;
261
262	if (!wdev->conn ||
263	wdev->conn->state == CFG80211_CONN_CONNECTED)
264	continue;
265
266	if (wdev->conn->params.bssid) {
267	memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
268	bssid = bssid_buf;
269	}
270	treason = NL80211_TIMEOUT_UNSPECIFIED;
271	if (cfg80211_conn_do_work(wdev, treason: &treason)) {
272	struct cfg80211_connect_resp_params cr;
273
274	memset(&cr, 0, sizeof(cr));
275	cr.status = -1;
276	cr.links[0].bssid = bssid;
277	cr.timeout_reason = treason;
278	__cfg80211_connect_result(dev: wdev->netdev, params: &cr, wextev: false);
279	}
280	}
281
282	wiphy_unlock(wiphy: &rdev->wiphy);
283	}
284
285	static void cfg80211_step_auth_next(struct cfg80211_conn *conn,
286	struct cfg80211_bss *bss)
287	{
288	memcpy(conn->bssid, bss->bssid, ETH_ALEN);
289	conn->params.bssid = conn->bssid;
290	conn->params.channel = bss->channel;
291	conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
292	}
293
294	/* Returned bss is reference counted and must be cleaned up appropriately. */
295	static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
296	{
297	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
298	struct cfg80211_bss *bss;
299
300	lockdep_assert_wiphy(wdev->wiphy);
301
302	bss = cfg80211_get_bss(wiphy: wdev->wiphy, channel: wdev->conn->params.channel,
303	bssid: wdev->conn->params.bssid,
304	ssid: wdev->conn->params.ssid,
305	ssid_len: wdev->conn->params.ssid_len,
306	bss_type: wdev->conn_bss_type,
307	IEEE80211_PRIVACY(wdev->conn->params.privacy));
308	if (!bss)
309	return NULL;
310
311	cfg80211_step_auth_next(conn: wdev->conn, bss);
312	schedule_work(work: &rdev->conn_work);
313
314	return bss;
315	}
316
317	void cfg80211_sme_scan_done(struct net_device *dev)
318	{
319	struct wireless_dev *wdev = dev->ieee80211_ptr;
320	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
321	struct cfg80211_bss *bss;
322
323	lockdep_assert_wiphy(wdev->wiphy);
324
325	if (!wdev->conn)
326	return;
327
328	if (wdev->conn->state != CFG80211_CONN_SCANNING &&
329	wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
330	return;
331
332	bss = cfg80211_get_conn_bss(wdev);
333	if (bss)
334	cfg80211_put_bss(wiphy: &rdev->wiphy, bss);
335	else
336	schedule_work(work: &rdev->conn_work);
337	}
338
339	void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
340	{
341	struct wiphy *wiphy = wdev->wiphy;
342	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
343	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
344	u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
345
346	lockdep_assert_wiphy(wdev->wiphy);
347
348	if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
349	return;
350
351	if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
352	wdev->conn->auto_auth &&
353	wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
354	/* select automatically between only open, shared, leap */
355	switch (wdev->conn->params.auth_type) {
356	case NL80211_AUTHTYPE_OPEN_SYSTEM:
357	if (wdev->connect_keys)
358	wdev->conn->params.auth_type =
359	NL80211_AUTHTYPE_SHARED_KEY;
360	else
361	wdev->conn->params.auth_type =
362	NL80211_AUTHTYPE_NETWORK_EAP;
363	break;
364	case NL80211_AUTHTYPE_SHARED_KEY:
365	wdev->conn->params.auth_type =
366	NL80211_AUTHTYPE_NETWORK_EAP;
367	break;
368	default:
369	/* huh? */
370	wdev->conn->params.auth_type =
371	NL80211_AUTHTYPE_OPEN_SYSTEM;
372	break;
373	}
374	wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
375	schedule_work(work: &rdev->conn_work);
376	} else if (status_code != WLAN_STATUS_SUCCESS) {
377	struct cfg80211_connect_resp_params cr;
378
379	memset(&cr, 0, sizeof(cr));
380	cr.status = status_code;
381	cr.links[0].bssid = mgmt->bssid;
382	cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
383	__cfg80211_connect_result(dev: wdev->netdev, params: &cr, wextev: false);
384	} else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
385	wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
386	schedule_work(work: &rdev->conn_work);
387	}
388	}
389
390	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
391	{
392	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
393
394	if (!wdev->conn)
395	return false;
396
397	if (status == WLAN_STATUS_SUCCESS) {
398	wdev->conn->state = CFG80211_CONN_CONNECTED;
399	return false;
400	}
401
402	if (wdev->conn->prev_bssid_valid) {
403	/*
404	* Some stupid APs don't accept reassoc, so we
405	* need to fall back to trying regular assoc;
406	* return true so no event is sent to userspace.
407	*/
408	wdev->conn->prev_bssid_valid = false;
409	wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
410	schedule_work(work: &rdev->conn_work);
411	return true;
412	}
413
414	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
415	schedule_work(work: &rdev->conn_work);
416	return false;
417	}
418
419	void cfg80211_sme_deauth(struct wireless_dev *wdev)
420	{
421	cfg80211_sme_free(wdev);
422	}
423
424	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
425	{
426	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
427
428	if (!wdev->conn)
429	return;
430
431	wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT;
432	schedule_work(work: &rdev->conn_work);
433	}
434
435	void cfg80211_sme_disassoc(struct wireless_dev *wdev)
436	{
437	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
438
439	if (!wdev->conn)
440	return;
441
442	wdev->conn->state = CFG80211_CONN_DEAUTH;
443	schedule_work(work: &rdev->conn_work);
444	}
445
446	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
447	{
448	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
449
450	if (!wdev->conn)
451	return;
452
453	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT;
454	schedule_work(work: &rdev->conn_work);
455	}
456
457	void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
458	{
459	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
460
461	if (!wdev->conn)
462	return;
463
464	wdev->conn->state = CFG80211_CONN_ABANDON;
465	schedule_work(work: &rdev->conn_work);
466	}
467
468	static void cfg80211_wdev_release_bsses(struct wireless_dev *wdev)
469	{
470	unsigned int link;
471
472	for_each_valid_link(wdev, link) {
473	if (!wdev->links[link].client.current_bss)
474	continue;
475	cfg80211_unhold_bss(bss: wdev->links[link].client.current_bss);
476	cfg80211_put_bss(wiphy: wdev->wiphy,
477	bss: &wdev->links[link].client.current_bss->pub);
478	wdev->links[link].client.current_bss = NULL;
479	}
480	}
481
482	void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask)
483	{
484	unsigned int link;
485
486	for_each_valid_link(wdev, link) {
487	if (!wdev->links[link].client.current_bss ||
488	!(link_mask & BIT(link)))
489	continue;
490	cfg80211_unhold_bss(bss: wdev->links[link].client.current_bss);
491	cfg80211_put_bss(wiphy: wdev->wiphy,
492	bss: &wdev->links[link].client.current_bss->pub);
493	wdev->links[link].client.current_bss = NULL;
494	}
495	}
496
497	static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
498	const u8 *ies, size_t ies_len,
499	const u8 **out_ies, size_t *out_ies_len)
500	{
501	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
502	u8 *buf;
503	size_t offs;
504
505	if (!rdev->wiphy.extended_capabilities_len ||
506	(ies && cfg80211_find_ie(eid: WLAN_EID_EXT_CAPABILITY, ies, len: ies_len))) {
507	*out_ies = kmemdup(p: ies, size: ies_len, GFP_KERNEL);
508	if (!*out_ies)
509	return -ENOMEM;
510	*out_ies_len = ies_len;
511	return 0;
512	}
513
514	buf = kmalloc(size: ies_len + rdev->wiphy.extended_capabilities_len + 2,
515	GFP_KERNEL);
516	if (!buf)
517	return -ENOMEM;
518
519	if (ies_len) {
520	static const u8 before_extcapa[] = {
521	/* not listing IEs expected to be created by driver */
522	WLAN_EID_RSN,
523	WLAN_EID_QOS_CAPA,
524	WLAN_EID_RRM_ENABLED_CAPABILITIES,
525	WLAN_EID_MOBILITY_DOMAIN,
526	WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
527	WLAN_EID_BSS_COEX_2040,
528	};
529
530	offs = ieee80211_ie_split(ies, ielen: ies_len, ids: before_extcapa,
531	ARRAY_SIZE(before_extcapa), offset: 0);
532	memcpy(buf, ies, offs);
533	/* leave a whole for extended capabilities IE */
534	memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
535	ies + offs, ies_len - offs);
536	} else {
537	offs = 0;
538	}
539
540	/* place extended capabilities IE (with only driver capabilities) */
541	buf[offs] = WLAN_EID_EXT_CAPABILITY;
542	buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
543	memcpy(buf + offs + 2,
544	rdev->wiphy.extended_capabilities,
545	rdev->wiphy.extended_capabilities_len);
546
547	*out_ies = buf;
548	*out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
549
550	return 0;
551	}
552
553	static int cfg80211_sme_connect(struct wireless_dev *wdev,
554	struct cfg80211_connect_params *connect,
555	const u8 *prev_bssid)
556	{
557	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
558	struct cfg80211_bss *bss;
559	int err;
560
561	if (!rdev->ops->auth || !rdev->ops->assoc)
562	return -EOPNOTSUPP;
563
564	cfg80211_wdev_release_bsses(wdev);
565
566	if (wdev->connected) {
567	cfg80211_sme_free(wdev);
568	wdev->connected = false;
569	}
570
571	if (wdev->conn)
572	return -EINPROGRESS;
573
574	wdev->conn = kzalloc(size: sizeof(*wdev->conn), GFP_KERNEL);
575	if (!wdev->conn)
576	return -ENOMEM;
577
578	/*
579	* Copy all parameters, and treat explicitly IEs, BSSID, SSID.
580	*/
581	memcpy(&wdev->conn->params, connect, sizeof(*connect));
582	if (connect->bssid) {
583	wdev->conn->params.bssid = wdev->conn->bssid;
584	memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
585	}
586
587	if (cfg80211_sme_get_conn_ies(wdev, ies: connect->ie, ies_len: connect->ie_len,
588	out_ies: &wdev->conn->ie,
589	out_ies_len: &wdev->conn->params.ie_len)) {
590	kfree(objp: wdev->conn);
591	wdev->conn = NULL;
592	return -ENOMEM;
593	}
594	wdev->conn->params.ie = wdev->conn->ie;
595
596	if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
597	wdev->conn->auto_auth = true;
598	/* start with open system ... should mostly work */
599	wdev->conn->params.auth_type =
600	NL80211_AUTHTYPE_OPEN_SYSTEM;
601	} else {
602	wdev->conn->auto_auth = false;
603	}
604
605	wdev->conn->params.ssid = wdev->u.client.ssid;
606	wdev->conn->params.ssid_len = wdev->u.client.ssid_len;
607
608	/* see if we have the bss already */
609	bss = cfg80211_get_bss(wiphy: wdev->wiphy, channel: wdev->conn->params.channel,
610	bssid: wdev->conn->params.bssid,
611	ssid: wdev->conn->params.ssid,
612	ssid_len: wdev->conn->params.ssid_len,
613	bss_type: wdev->conn_bss_type,
614	IEEE80211_PRIVACY(wdev->conn->params.privacy));
615
616	if (prev_bssid) {
617	memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
618	wdev->conn->prev_bssid_valid = true;
619	}
620
621	/* we're good if we have a matching bss struct */
622	if (bss) {
623	enum nl80211_timeout_reason treason;
624
625	cfg80211_step_auth_next(conn: wdev->conn, bss);
626	err = cfg80211_conn_do_work(wdev, treason: &treason);
627	cfg80211_put_bss(wiphy: wdev->wiphy, bss);
628	} else {
629	/* otherwise we'll need to scan for the AP first */
630	err = cfg80211_conn_scan(wdev);
631
632	/*
633	* If we can't scan right now, then we need to scan again
634	* after the current scan finished, since the parameters
635	* changed (unless we find a good AP anyway).
636	*/
637	if (err == -EBUSY) {
638	err = 0;
639	wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
640	}
641	}
642
643	if (err)
644	cfg80211_sme_free(wdev);
645
646	return err;
647	}
648
649	static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
650	{
651	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
652	int err;
653
654	if (!wdev->conn)
655	return 0;
656
657	if (!rdev->ops->deauth)
658	return -EOPNOTSUPP;
659
660	if (wdev->conn->state == CFG80211_CONN_SCANNING ||
661	wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
662	err = 0;
663	goto out;
664	}
665
666	/* wdev->conn->params.bssid must be set if > SCANNING */
667	err = cfg80211_mlme_deauth(rdev, dev: wdev->netdev,
668	bssid: wdev->conn->params.bssid,
669	NULL, ie_len: 0, reason, local_state_change: false);
670	out:
671	cfg80211_sme_free(wdev);
672	return err;
673	}
674
675	/*
676	* code shared for in-device and software SME
677	*/
678
679	static bool cfg80211_is_all_idle(void)
680	{
681	struct cfg80211_registered_device *rdev;
682	struct wireless_dev *wdev;
683	bool is_all_idle = true;
684
685	/*
686	* All devices must be idle as otherwise if you are actively
687	* scanning some new beacon hints could be learned and would
688	* count as new regulatory hints.
689	* Also if there is any other active beaconing interface we
690	* need not issue a disconnect hint and reset any info such
691	* as chan dfs state, etc.
692	*/
693	for_each_rdev(rdev) {
694	wiphy_lock(wiphy: &rdev->wiphy);
695	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
696	if (wdev->conn || wdev->connected ||
697	cfg80211_beaconing_iface_active(wdev))
698	is_all_idle = false;
699	}
700	wiphy_unlock(wiphy: &rdev->wiphy);
701	}
702
703	return is_all_idle;
704	}
705
706	static void disconnect_work(struct work_struct *work)
707	{
708	rtnl_lock();
709	if (cfg80211_is_all_idle())
710	regulatory_hint_disconnect();
711	rtnl_unlock();
712	}
713
714	DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
715
716	static void
717	cfg80211_connect_result_release_bsses(struct wireless_dev *wdev,
718	struct cfg80211_connect_resp_params *cr)
719	{
720	unsigned int link;
721
722	for_each_valid_link(cr, link) {
723	if (!cr->links[link].bss)
724	continue;
725	cfg80211_unhold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
726	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
727	}
728	}
729
730	/*
731	* API calls for drivers implementing connect/disconnect and
732	* SME event handling
733	*/
734
735	/* This method must consume bss one way or another */
736	void __cfg80211_connect_result(struct net_device *dev,
737	struct cfg80211_connect_resp_params *cr,
738	bool wextev)
739	{
740	struct wireless_dev *wdev = dev->ieee80211_ptr;
741	const struct element *country_elem = NULL;
742	const struct element *ssid;
743	const u8 *country_data;
744	u8 country_datalen;
745	#ifdef CONFIG_CFG80211_WEXT
746	union iwreq_data wrqu;
747	#endif
748	unsigned int link;
749	const u8 *connected_addr;
750	bool bss_not_found = false;
751
752	lockdep_assert_wiphy(wdev->wiphy);
753
754	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
755	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
756	goto out;
757
758	if (cr->valid_links) {
759	if (WARN_ON(!cr->ap_mld_addr))
760	goto out;
761
762	for_each_valid_link(cr, link) {
763	if (WARN_ON(!cr->links[link].addr))
764	goto out;
765	}
766
767	if (WARN_ON(wdev->connect_keys))
768	goto out;
769	}
770
771	wdev->unprot_beacon_reported = 0;
772	nl80211_send_connect_result(rdev: wiphy_to_rdev(wiphy: wdev->wiphy), netdev: dev, params: cr,
773	GFP_KERNEL);
774	connected_addr = cr->valid_links ? cr->ap_mld_addr : cr->links[0].bssid;
775
776	#ifdef CONFIG_CFG80211_WEXT
777	if (wextev && !cr->valid_links) {
778	if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) {
779	memset(&wrqu, 0, sizeof(wrqu));
780	wrqu.data.length = cr->req_ie_len;
781	wireless_send_event(dev, IWEVASSOCREQIE, wrqu: &wrqu,
782	extra: cr->req_ie);
783	}
784
785	if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) {
786	memset(&wrqu, 0, sizeof(wrqu));
787	wrqu.data.length = cr->resp_ie_len;
788	wireless_send_event(dev, IWEVASSOCRESPIE, wrqu: &wrqu,
789	extra: cr->resp_ie);
790	}
791
792	memset(&wrqu, 0, sizeof(wrqu));
793	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
794	if (connected_addr && cr->status == WLAN_STATUS_SUCCESS) {
795	memcpy(wrqu.ap_addr.sa_data, connected_addr, ETH_ALEN);
796	memcpy(wdev->wext.prev_bssid, connected_addr, ETH_ALEN);
797	wdev->wext.prev_bssid_valid = true;
798	}
799	wireless_send_event(dev, SIOCGIWAP, wrqu: &wrqu, NULL);
800	}
801	#endif
802
803	if (cr->status == WLAN_STATUS_SUCCESS) {
804	if (!wiphy_to_rdev(wiphy: wdev->wiphy)->ops->connect) {
805	for_each_valid_link(cr, link) {
806	if (WARN_ON_ONCE(!cr->links[link].bss))
807	break;
808	}
809	}
810
811	for_each_valid_link(cr, link) {
812	/* don't do extra lookups for failures */
813	if (cr->links[link].status != WLAN_STATUS_SUCCESS)
814	continue;
815
816	if (cr->links[link].bss)
817	continue;
818
819	cr->links[link].bss =
820	cfg80211_get_bss(wiphy: wdev->wiphy, NULL,
821	bssid: cr->links[link].bssid,
822	ssid: wdev->u.client.ssid,
823	ssid_len: wdev->u.client.ssid_len,
824	bss_type: wdev->conn_bss_type,
825	privacy: IEEE80211_PRIVACY_ANY);
826	if (!cr->links[link].bss) {
827	bss_not_found = true;
828	break;
829	}
830	cfg80211_hold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
831	}
832	}
833
834	cfg80211_wdev_release_bsses(wdev);
835
836	if (cr->status != WLAN_STATUS_SUCCESS) {
837	kfree_sensitive(objp: wdev->connect_keys);
838	wdev->connect_keys = NULL;
839	wdev->u.client.ssid_len = 0;
840	wdev->conn_owner_nlportid = 0;
841	cfg80211_connect_result_release_bsses(wdev, cr);
842	cfg80211_sme_free(wdev);
843	return;
844	}
845
846	if (WARN_ON(bss_not_found)) {
847	cfg80211_connect_result_release_bsses(wdev, cr);
848	return;
849	}
850
851	memset(wdev->links, 0, sizeof(wdev->links));
852	for_each_valid_link(cr, link) {
853	if (cr->links[link].status == WLAN_STATUS_SUCCESS)
854	continue;
855	cr->valid_links &= ~BIT(link);
856	/* don't require bss pointer for failed links */
857	if (!cr->links[link].bss)
858	continue;
859	cfg80211_unhold_bss(bss: bss_from_pub(pub: cr->links[link].bss));
860	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
861	}
862	wdev->valid_links = cr->valid_links;
863	for_each_valid_link(cr, link)
864	wdev->links[link].client.current_bss =
865	bss_from_pub(pub: cr->links[link].bss);
866	wdev->connected = true;
867	ether_addr_copy(dst: wdev->u.client.connected_addr, src: connected_addr);
868	if (cr->valid_links) {
869	for_each_valid_link(cr, link)
870	memcpy(wdev->links[link].addr, cr->links[link].addr,
871	ETH_ALEN);
872	}
873
874	cfg80211_upload_connect_keys(wdev);
875
876	rcu_read_lock();
877	for_each_valid_link(cr, link) {
878	country_elem =
879	ieee80211_bss_get_elem(bss: cr->links[link].bss,
880	id: WLAN_EID_COUNTRY);
881	if (country_elem)
882	break;
883	}
884	if (!country_elem) {
885	rcu_read_unlock();
886	return;
887	}
888
889	country_datalen = country_elem->datalen;
890	country_data = kmemdup(p: country_elem->data, size: country_datalen, GFP_ATOMIC);
891	rcu_read_unlock();
892
893	if (!country_data)
894	return;
895
896	regulatory_hint_country_ie(wiphy: wdev->wiphy,
897	band: cr->links[link].bss->channel->band,
898	country_ie: country_data, country_ie_len: country_datalen);
899	kfree(objp: country_data);
900
901	if (!wdev->u.client.ssid_len) {
902	rcu_read_lock();
903	for_each_valid_link(cr, link) {
904	ssid = ieee80211_bss_get_elem(bss: cr->links[link].bss,
905	id: WLAN_EID_SSID);
906
907	if (!ssid || !ssid->datalen)
908	continue;
909
910	memcpy(wdev->u.client.ssid, ssid->data, ssid->datalen);
911	wdev->u.client.ssid_len = ssid->datalen;
912	break;
913	}
914	rcu_read_unlock();
915	}
916
917	return;
918	out:
919	for_each_valid_link(cr, link)
920	cfg80211_put_bss(wiphy: wdev->wiphy, bss: cr->links[link].bss);
921	}
922
923	static void cfg80211_update_link_bss(struct wireless_dev *wdev,
924	struct cfg80211_bss **bss)
925	{
926	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
927	struct cfg80211_internal_bss *ibss;
928
929	if (!*bss)
930	return;
931
932	ibss = bss_from_pub(pub: *bss);
933	if (list_empty(head: &ibss->list)) {
934	struct cfg80211_bss *found = NULL, *tmp = *bss;
935
936	found = cfg80211_get_bss(wiphy: wdev->wiphy, NULL,
937	bssid: (*bss)->bssid,
938	ssid: wdev->u.client.ssid,
939	ssid_len: wdev->u.client.ssid_len,
940	bss_type: wdev->conn_bss_type,
941	privacy: IEEE80211_PRIVACY_ANY);
942	if (found) {
943	/* The same BSS is already updated so use it
944	* instead, as it has latest info.
945	*/
946	*bss = found;
947	} else {
948	/* Update with BSS provided by driver, it will
949	* be freshly added and ref cnted, we can free
950	* the old one.
951	*
952	* signal_valid can be false, as we are not
953	* expecting the BSS to be found.
954	*
955	* keep the old timestamp to avoid confusion
956	*/
957	cfg80211_bss_update(rdev, tmp: ibss, signal_valid: false,
958	ts: ibss->ts);
959	}
960
961	cfg80211_put_bss(wiphy: wdev->wiphy, bss: tmp);
962	}
963	}
964
965	/* Consumes bss object(s) one way or another */
966	void cfg80211_connect_done(struct net_device *dev,
967	struct cfg80211_connect_resp_params *params,
968	gfp_t gfp)
969	{
970	struct wireless_dev *wdev = dev->ieee80211_ptr;
971	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
972	struct cfg80211_event *ev;
973	unsigned long flags;
974	u8 *next;
975	size_t link_info_size = 0;
976	unsigned int link;
977
978	for_each_valid_link(params, link) {
979	cfg80211_update_link_bss(wdev, bss: &params->links[link].bss);
980	link_info_size += params->links[link].bssid ? ETH_ALEN : 0;
981	link_info_size += params->links[link].addr ? ETH_ALEN : 0;
982	}
983
984	ev = kzalloc(size: sizeof(*ev) + (params->ap_mld_addr ? ETH_ALEN : 0) +
985	params->req_ie_len + params->resp_ie_len +
986	params->fils.kek_len + params->fils.pmk_len +
987	(params->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
988	flags: gfp);
989
990	if (!ev) {
991	for_each_valid_link(params, link)
992	cfg80211_put_bss(wiphy: wdev->wiphy,
993	bss: params->links[link].bss);
994	return;
995	}
996
997	ev->type = EVENT_CONNECT_RESULT;
998	next = ((u8 *)ev) + sizeof(*ev);
999	if (params->ap_mld_addr) {
1000	ev->cr.ap_mld_addr = next;
1001	memcpy((void *)ev->cr.ap_mld_addr, params->ap_mld_addr,
1002	ETH_ALEN);
1003	next += ETH_ALEN;
1004	}
1005	if (params->req_ie_len) {
1006	ev->cr.req_ie = next;
1007	ev->cr.req_ie_len = params->req_ie_len;
1008	memcpy((void *)ev->cr.req_ie, params->req_ie,
1009	params->req_ie_len);
1010	next += params->req_ie_len;
1011	}
1012	if (params->resp_ie_len) {
1013	ev->cr.resp_ie = next;
1014	ev->cr.resp_ie_len = params->resp_ie_len;
1015	memcpy((void *)ev->cr.resp_ie, params->resp_ie,
1016	params->resp_ie_len);
1017	next += params->resp_ie_len;
1018	}
1019	if (params->fils.kek_len) {
1020	ev->cr.fils.kek = next;
1021	ev->cr.fils.kek_len = params->fils.kek_len;
1022	memcpy((void *)ev->cr.fils.kek, params->fils.kek,
1023	params->fils.kek_len);
1024	next += params->fils.kek_len;
1025	}
1026	if (params->fils.pmk_len) {
1027	ev->cr.fils.pmk = next;
1028	ev->cr.fils.pmk_len = params->fils.pmk_len;
1029	memcpy((void *)ev->cr.fils.pmk, params->fils.pmk,
1030	params->fils.pmk_len);
1031	next += params->fils.pmk_len;
1032	}
1033	if (params->fils.pmkid) {
1034	ev->cr.fils.pmkid = next;
1035	memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid,
1036	WLAN_PMKID_LEN);
1037	next += WLAN_PMKID_LEN;
1038	}
1039	ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num;
1040	if (params->fils.update_erp_next_seq_num)
1041	ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num;
1042	ev->cr.valid_links = params->valid_links;
1043	for_each_valid_link(params, link) {
1044	if (params->links[link].bss)
1045	cfg80211_hold_bss(
1046	bss: bss_from_pub(pub: params->links[link].bss));
1047	ev->cr.links[link].bss = params->links[link].bss;
1048
1049	if (params->links[link].addr) {
1050	ev->cr.links[link].addr = next;
1051	memcpy((void *)ev->cr.links[link].addr,
1052	params->links[link].addr,
1053	ETH_ALEN);
1054	next += ETH_ALEN;
1055	}
1056	if (params->links[link].bssid) {
1057	ev->cr.links[link].bssid = next;
1058	memcpy((void *)ev->cr.links[link].bssid,
1059	params->links[link].bssid,
1060	ETH_ALEN);
1061	next += ETH_ALEN;
1062	}
1063	}
1064	ev->cr.status = params->status;
1065	ev->cr.timeout_reason = params->timeout_reason;
1066
1067	spin_lock_irqsave(&wdev->event_lock, flags);
1068	list_add_tail(new: &ev->list, head: &wdev->event_list);
1069	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1070	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1071	}
1072	EXPORT_SYMBOL(cfg80211_connect_done);
1073
1074	/* Consumes bss object one way or another */
1075	void __cfg80211_roamed(struct wireless_dev *wdev,
1076	struct cfg80211_roam_info *info)
1077	{
1078	#ifdef CONFIG_CFG80211_WEXT
1079	union iwreq_data wrqu;
1080	#endif
1081	unsigned int link;
1082	const u8 *connected_addr;
1083
1084	lockdep_assert_wiphy(wdev->wiphy);
1085
1086	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1087	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
1088	goto out;
1089
1090	if (WARN_ON(!wdev->connected))
1091	goto out;
1092
1093	if (info->valid_links) {
1094	if (WARN_ON(!info->ap_mld_addr))
1095	goto out;
1096
1097	for_each_valid_link(info, link) {
1098	if (WARN_ON(!info->links[link].addr))
1099	goto out;
1100	}
1101	}
1102
1103	cfg80211_wdev_release_bsses(wdev);
1104
1105	for_each_valid_link(info, link) {
1106	if (WARN_ON(!info->links[link].bss))
1107	goto out;
1108	}
1109
1110	memset(wdev->links, 0, sizeof(wdev->links));
1111	wdev->valid_links = info->valid_links;
1112	for_each_valid_link(info, link) {
1113	cfg80211_hold_bss(bss: bss_from_pub(pub: info->links[link].bss));
1114	wdev->links[link].client.current_bss =
1115	bss_from_pub(pub: info->links[link].bss);
1116	}
1117
1118	connected_addr = info->valid_links ?
1119	info->ap_mld_addr :
1120	info->links[0].bss->bssid;
1121	ether_addr_copy(dst: wdev->u.client.connected_addr, src: connected_addr);
1122	if (info->valid_links) {
1123	for_each_valid_link(info, link)
1124	memcpy(wdev->links[link].addr, info->links[link].addr,
1125	ETH_ALEN);
1126	}
1127	wdev->unprot_beacon_reported = 0;
1128	nl80211_send_roamed(rdev: wiphy_to_rdev(wiphy: wdev->wiphy),
1129	netdev: wdev->netdev, info, GFP_KERNEL);
1130
1131	#ifdef CONFIG_CFG80211_WEXT
1132	if (!info->valid_links) {
1133	if (info->req_ie) {
1134	memset(&wrqu, 0, sizeof(wrqu));
1135	wrqu.data.length = info->req_ie_len;
1136	wireless_send_event(dev: wdev->netdev, IWEVASSOCREQIE,
1137	wrqu: &wrqu, extra: info->req_ie);
1138	}
1139
1140	if (info->resp_ie) {
1141	memset(&wrqu, 0, sizeof(wrqu));
1142	wrqu.data.length = info->resp_ie_len;
1143	wireless_send_event(dev: wdev->netdev, IWEVASSOCRESPIE,
1144	wrqu: &wrqu, extra: info->resp_ie);
1145	}
1146
1147	memset(&wrqu, 0, sizeof(wrqu));
1148	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1149	memcpy(wrqu.ap_addr.sa_data, connected_addr, ETH_ALEN);
1150	memcpy(wdev->wext.prev_bssid, connected_addr, ETH_ALEN);
1151	wdev->wext.prev_bssid_valid = true;
1152	wireless_send_event(dev: wdev->netdev, SIOCGIWAP, wrqu: &wrqu, NULL);
1153	}
1154	#endif
1155
1156	return;
1157	out:
1158	for_each_valid_link(info, link)
1159	cfg80211_put_bss(wiphy: wdev->wiphy, bss: info->links[link].bss);
1160	}
1161
1162	/* Consumes info->links.bss object(s) one way or another */
1163	void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
1164	gfp_t gfp)
1165	{
1166	struct wireless_dev *wdev = dev->ieee80211_ptr;
1167	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1168	struct cfg80211_event *ev;
1169	unsigned long flags;
1170	u8 *next;
1171	unsigned int link;
1172	size_t link_info_size = 0;
1173	bool bss_not_found = false;
1174
1175	for_each_valid_link(info, link) {
1176	link_info_size += info->links[link].addr ? ETH_ALEN : 0;
1177	link_info_size += info->links[link].bssid ? ETH_ALEN : 0;
1178
1179	if (info->links[link].bss)
1180	continue;
1181
1182	info->links[link].bss =
1183	cfg80211_get_bss(wiphy: wdev->wiphy,
1184	channel: info->links[link].channel,
1185	bssid: info->links[link].bssid,
1186	ssid: wdev->u.client.ssid,
1187	ssid_len: wdev->u.client.ssid_len,
1188	bss_type: wdev->conn_bss_type,
1189	privacy: IEEE80211_PRIVACY_ANY);
1190
1191	if (!info->links[link].bss) {
1192	bss_not_found = true;
1193	break;
1194	}
1195	}
1196
1197	if (WARN_ON(bss_not_found))
1198	goto out;
1199
1200	ev = kzalloc(size: sizeof(*ev) + info->req_ie_len + info->resp_ie_len +
1201	info->fils.kek_len + info->fils.pmk_len +
1202	(info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
1203	(info->ap_mld_addr ? ETH_ALEN : 0) + link_info_size, flags: gfp);
1204	if (!ev)
1205	goto out;
1206
1207	ev->type = EVENT_ROAMED;
1208	next = ((u8 *)ev) + sizeof(*ev);
1209	if (info->req_ie_len) {
1210	ev->rm.req_ie = next;
1211	ev->rm.req_ie_len = info->req_ie_len;
1212	memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
1213	next += info->req_ie_len;
1214	}
1215	if (info->resp_ie_len) {
1216	ev->rm.resp_ie = next;
1217	ev->rm.resp_ie_len = info->resp_ie_len;
1218	memcpy((void *)ev->rm.resp_ie, info->resp_ie,
1219	info->resp_ie_len);
1220	next += info->resp_ie_len;
1221	}
1222	if (info->fils.kek_len) {
1223	ev->rm.fils.kek = next;
1224	ev->rm.fils.kek_len = info->fils.kek_len;
1225	memcpy((void *)ev->rm.fils.kek, info->fils.kek,
1226	info->fils.kek_len);
1227	next += info->fils.kek_len;
1228	}
1229	if (info->fils.pmk_len) {
1230	ev->rm.fils.pmk = next;
1231	ev->rm.fils.pmk_len = info->fils.pmk_len;
1232	memcpy((void *)ev->rm.fils.pmk, info->fils.pmk,
1233	info->fils.pmk_len);
1234	next += info->fils.pmk_len;
1235	}
1236	if (info->fils.pmkid) {
1237	ev->rm.fils.pmkid = next;
1238	memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid,
1239	WLAN_PMKID_LEN);
1240	next += WLAN_PMKID_LEN;
1241	}
1242	ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num;
1243	if (info->fils.update_erp_next_seq_num)
1244	ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num;
1245	if (info->ap_mld_addr) {
1246	ev->rm.ap_mld_addr = next;
1247	memcpy((void *)ev->rm.ap_mld_addr, info->ap_mld_addr,
1248	ETH_ALEN);
1249	next += ETH_ALEN;
1250	}
1251	ev->rm.valid_links = info->valid_links;
1252	for_each_valid_link(info, link) {
1253	ev->rm.links[link].bss = info->links[link].bss;
1254
1255	if (info->links[link].addr) {
1256	ev->rm.links[link].addr = next;
1257	memcpy((void *)ev->rm.links[link].addr,
1258	info->links[link].addr,
1259	ETH_ALEN);
1260	next += ETH_ALEN;
1261	}
1262
1263	if (info->links[link].bssid) {
1264	ev->rm.links[link].bssid = next;
1265	memcpy((void *)ev->rm.links[link].bssid,
1266	info->links[link].bssid,
1267	ETH_ALEN);
1268	next += ETH_ALEN;
1269	}
1270	}
1271
1272	spin_lock_irqsave(&wdev->event_lock, flags);
1273	list_add_tail(new: &ev->list, head: &wdev->event_list);
1274	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1275	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1276
1277	return;
1278	out:
1279	for_each_valid_link(info, link)
1280	cfg80211_put_bss(wiphy: wdev->wiphy, bss: info->links[link].bss);
1281
1282	}
1283	EXPORT_SYMBOL(cfg80211_roamed);
1284
1285	void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *peer_addr,
1286	const u8 *td_bitmap, u8 td_bitmap_len)
1287	{
1288	lockdep_assert_wiphy(wdev->wiphy);
1289
1290	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1291	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT &&
1292	wdev->iftype != NL80211_IFTYPE_AP &&
1293	wdev->iftype != NL80211_IFTYPE_P2P_GO))
1294	return;
1295
1296	if (wdev->iftype == NL80211_IFTYPE_STATION ||
1297	wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) {
1298	if (WARN_ON(!wdev->connected) ||
1299	WARN_ON(!ether_addr_equal(wdev->u.client.connected_addr, peer_addr)))
1300	return;
1301	}
1302
1303	nl80211_send_port_authorized(rdev: wiphy_to_rdev(wiphy: wdev->wiphy), netdev: wdev->netdev,
1304	peer_addr, td_bitmap, td_bitmap_len);
1305	}
1306
1307	void cfg80211_port_authorized(struct net_device *dev, const u8 *peer_addr,
1308	const u8 *td_bitmap, u8 td_bitmap_len, gfp_t gfp)
1309	{
1310	struct wireless_dev *wdev = dev->ieee80211_ptr;
1311	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1312	struct cfg80211_event *ev;
1313	unsigned long flags;
1314
1315	if (WARN_ON(!peer_addr))
1316	return;
1317
1318	ev = kzalloc(size: sizeof(*ev) + td_bitmap_len, flags: gfp);
1319	if (!ev)
1320	return;
1321
1322	ev->type = EVENT_PORT_AUTHORIZED;
1323	memcpy(ev->pa.peer_addr, peer_addr, ETH_ALEN);
1324	ev->pa.td_bitmap = ((u8 *)ev) + sizeof(*ev);
1325	ev->pa.td_bitmap_len = td_bitmap_len;
1326	memcpy((void *)ev->pa.td_bitmap, td_bitmap, td_bitmap_len);
1327
1328	/*
1329	* Use the wdev event list so that if there are pending
1330	* connected/roamed events, they will be reported first.
1331	*/
1332	spin_lock_irqsave(&wdev->event_lock, flags);
1333	list_add_tail(new: &ev->list, head: &wdev->event_list);
1334	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1335	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1336	}
1337	EXPORT_SYMBOL(cfg80211_port_authorized);
1338
1339	void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
1340	size_t ie_len, u16 reason, bool from_ap)
1341	{
1342	struct wireless_dev *wdev = dev->ieee80211_ptr;
1343	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1344	int i;
1345	#ifdef CONFIG_CFG80211_WEXT
1346	union iwreq_data wrqu;
1347	#endif
1348
1349	lockdep_assert_wiphy(wdev->wiphy);
1350
1351	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1352	wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
1353	return;
1354
1355	cfg80211_wdev_release_bsses(wdev);
1356	wdev->connected = false;
1357	wdev->u.client.ssid_len = 0;
1358	wdev->conn_owner_nlportid = 0;
1359	kfree_sensitive(objp: wdev->connect_keys);
1360	wdev->connect_keys = NULL;
1361
1362	nl80211_send_disconnected(rdev, netdev: dev, reason, ie, ie_len, from_ap);
1363
1364	/* stop critical protocol if supported */
1365	if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
1366	rdev->crit_proto_nlportid = 0;
1367	rdev_crit_proto_stop(rdev, wdev);
1368	}
1369
1370	/*
1371	* Delete all the keys ... pairwise keys can't really
1372	* exist any more anyway, but default keys might.
1373	*/
1374	if (rdev->ops->del_key) {
1375	int max_key_idx = 5;
1376
1377	if (wiphy_ext_feature_isset(
1378	wiphy: wdev->wiphy,
1379	ftidx: NL80211_EXT_FEATURE_BEACON_PROTECTION) ||
1380	wiphy_ext_feature_isset(
1381	wiphy: wdev->wiphy,
1382	ftidx: NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
1383	max_key_idx = 7;
1384	for (i = 0; i <= max_key_idx; i++)
1385	rdev_del_key(rdev, netdev: dev, link_id: -1, key_index: i, pairwise: false, NULL);
1386	}
1387
1388	rdev_set_qos_map(rdev, dev, NULL);
1389
1390	#ifdef CONFIG_CFG80211_WEXT
1391	memset(&wrqu, 0, sizeof(wrqu));
1392	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1393	wireless_send_event(dev, SIOCGIWAP, wrqu: &wrqu, NULL);
1394	wdev->wext.connect.ssid_len = 0;
1395	#endif
1396
1397	schedule_work(work: &cfg80211_disconnect_work);
1398
1399	cfg80211_schedule_channels_check(wdev);
1400	}
1401
1402	void cfg80211_disconnected(struct net_device *dev, u16 reason,
1403	const u8 *ie, size_t ie_len,
1404	bool locally_generated, gfp_t gfp)
1405	{
1406	struct wireless_dev *wdev = dev->ieee80211_ptr;
1407	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1408	struct cfg80211_event *ev;
1409	unsigned long flags;
1410
1411	ev = kzalloc(size: sizeof(*ev) + ie_len, flags: gfp);
1412	if (!ev)
1413	return;
1414
1415	ev->type = EVENT_DISCONNECTED;
1416	ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
1417	ev->dc.ie_len = ie_len;
1418	memcpy((void *)ev->dc.ie, ie, ie_len);
1419	ev->dc.reason = reason;
1420	ev->dc.locally_generated = locally_generated;
1421
1422	spin_lock_irqsave(&wdev->event_lock, flags);
1423	list_add_tail(new: &ev->list, head: &wdev->event_list);
1424	spin_unlock_irqrestore(lock: &wdev->event_lock, flags);
1425	queue_work(wq: cfg80211_wq, work: &rdev->event_work);
1426	}
1427	EXPORT_SYMBOL(cfg80211_disconnected);
1428
1429	/*
1430	* API calls for nl80211/wext compatibility code
1431	*/
1432	int cfg80211_connect(struct cfg80211_registered_device *rdev,
1433	struct net_device *dev,
1434	struct cfg80211_connect_params *connect,
1435	struct cfg80211_cached_keys *connkeys,
1436	const u8 *prev_bssid)
1437	{
1438	struct wireless_dev *wdev = dev->ieee80211_ptr;
1439	int err;
1440
1441	lockdep_assert_wiphy(wdev->wiphy);
1442
1443	/*
1444	* If we have an ssid_len, we're trying to connect or are
1445	* already connected, so reject a new SSID unless it's the
1446	* same (which is the case for re-association.)
1447	*/
1448	if (wdev->u.client.ssid_len &&
1449	(wdev->u.client.ssid_len != connect->ssid_len ||
1450	memcmp(p: wdev->u.client.ssid, q: connect->ssid, size: wdev->u.client.ssid_len)))
1451	return -EALREADY;
1452
1453	/*
1454	* If connected, reject (re-)association unless prev_bssid
1455	* matches the current BSSID.
1456	*/
1457	if (wdev->connected) {
1458	if (!prev_bssid)
1459	return -EALREADY;
1460	if (!ether_addr_equal(addr1: prev_bssid,
1461	addr2: wdev->u.client.connected_addr))
1462	return -ENOTCONN;
1463	}
1464
1465	/*
1466	* Reject if we're in the process of connecting with WEP,
1467	* this case isn't very interesting and trying to handle
1468	* it would make the code much more complex.
1469	*/
1470	if (wdev->connect_keys)
1471	return -EINPROGRESS;
1472
1473	cfg80211_oper_and_ht_capa(ht_capa: &connect->ht_capa_mask,
1474	ht_capa_mask: rdev->wiphy.ht_capa_mod_mask);
1475	cfg80211_oper_and_vht_capa(vht_capa: &connect->vht_capa_mask,
1476	vht_capa_mask: rdev->wiphy.vht_capa_mod_mask);
1477
1478	if (connkeys && connkeys->def >= 0) {
1479	int idx;
1480	u32 cipher;
1481
1482	idx = connkeys->def;
1483	cipher = connkeys->params[idx].cipher;
1484	/* If given a WEP key we may need it for shared key auth */
1485	if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
1486	cipher == WLAN_CIPHER_SUITE_WEP104) {
1487	connect->key_idx = idx;
1488	connect->key = connkeys->params[idx].key;
1489	connect->key_len = connkeys->params[idx].key_len;
1490
1491	/*
1492	* If ciphers are not set (e.g. when going through
1493	* iwconfig), we have to set them appropriately here.
1494	*/
1495	if (connect->crypto.cipher_group == 0)
1496	connect->crypto.cipher_group = cipher;
1497
1498	if (connect->crypto.n_ciphers_pairwise == 0) {
1499	connect->crypto.n_ciphers_pairwise = 1;
1500	connect->crypto.ciphers_pairwise[0] = cipher;
1501	}
1502	}
1503	} else {
1504	if (WARN_ON(connkeys))
1505	return -EINVAL;
1506
1507	/* connect can point to wdev->wext.connect which
1508	* can hold key data from a previous connection
1509	*/
1510	connect->key = NULL;
1511	connect->key_len = 0;
1512	connect->key_idx = 0;
1513	}
1514
1515	wdev->connect_keys = connkeys;
1516	memcpy(wdev->u.client.ssid, connect->ssid, connect->ssid_len);
1517	wdev->u.client.ssid_len = connect->ssid_len;
1518
1519	wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
1520	IEEE80211_BSS_TYPE_ESS;
1521
1522	if (!rdev->ops->connect)
1523	err = cfg80211_sme_connect(wdev, connect, prev_bssid);
1524	else
1525	err = rdev_connect(rdev, dev, sme: connect);
1526
1527	if (err) {
1528	wdev->connect_keys = NULL;
1529	/*
1530	* This could be reassoc getting refused, don't clear
1531	* ssid_len in that case.
1532	*/
1533	if (!wdev->connected)
1534	wdev->u.client.ssid_len = 0;
1535	return err;
1536	}
1537
1538	return 0;
1539	}
1540
1541	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
1542	struct net_device *dev, u16 reason, bool wextev)
1543	{
1544	struct wireless_dev *wdev = dev->ieee80211_ptr;
1545	int err = 0;
1546
1547	lockdep_assert_wiphy(wdev->wiphy);
1548
1549	kfree_sensitive(objp: wdev->connect_keys);
1550	wdev->connect_keys = NULL;
1551
1552	wdev->conn_owner_nlportid = 0;
1553
1554	if (wdev->conn)
1555	err = cfg80211_sme_disconnect(wdev, reason);
1556	else if (!rdev->ops->disconnect)
1557	cfg80211_mlme_down(rdev, dev);
1558	else if (wdev->u.client.ssid_len)
1559	err = rdev_disconnect(rdev, dev, reason_code: reason);
1560
1561	/*
1562	* Clear ssid_len unless we actually were fully connected,
1563	* in which case cfg80211_disconnected() will take care of
1564	* this later.
1565	*/
1566	if (!wdev->connected)
1567	wdev->u.client.ssid_len = 0;
1568
1569	return err;
1570	}
1571
1572	/*
1573	* Used to clean up after the connection / connection attempt owner socket
1574	* disconnects
1575	*/
1576	void cfg80211_autodisconnect_wk(struct work_struct *work)
1577	{
1578	struct wireless_dev *wdev =
1579	container_of(work, struct wireless_dev, disconnect_wk);
1580	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy: wdev->wiphy);
1581
1582	wiphy_lock(wiphy: wdev->wiphy);
1583
1584	if (wdev->conn_owner_nlportid) {
1585	switch (wdev->iftype) {
1586	case NL80211_IFTYPE_ADHOC:
1587	cfg80211_leave_ibss(rdev, dev: wdev->netdev, nowext: false);
1588	break;
1589	case NL80211_IFTYPE_AP:
1590	case NL80211_IFTYPE_P2P_GO:
1591	cfg80211_stop_ap(rdev, dev: wdev->netdev, link: -1, notify: false);
1592	break;
1593	case NL80211_IFTYPE_MESH_POINT:
1594	cfg80211_leave_mesh(rdev, dev: wdev->netdev);
1595	break;
1596	case NL80211_IFTYPE_STATION:
1597	case NL80211_IFTYPE_P2P_CLIENT:
1598	/*
1599	* Use disconnect_bssid if still connecting and
1600	* ops->disconnect not implemented. Otherwise we can
1601	* use cfg80211_disconnect.
1602	*/
1603	if (rdev->ops->disconnect || wdev->connected)
1604	cfg80211_disconnect(rdev, dev: wdev->netdev,
1605	reason: WLAN_REASON_DEAUTH_LEAVING,
1606	wextev: true);
1607	else
1608	cfg80211_mlme_deauth(rdev, dev: wdev->netdev,
1609	bssid: wdev->disconnect_bssid,
1610	NULL, ie_len: 0,
1611	reason: WLAN_REASON_DEAUTH_LEAVING,
1612	local_state_change: false);
1613	break;
1614	default:
1615	break;
1616	}
1617	}
1618
1619	wiphy_unlock(wiphy: wdev->wiphy);
1620	}
1621