sta.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Implementation of mac80211 API.
  4 *
  5 * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
  6 * Copyright (c) 2010, ST-Ericsson
  7 */
  8#include <linux/etherdevice.h>
  9#include <net/mac80211.h>
 10
 11#include "sta.h"
 12#include "wfx.h"
 13#include "bus.h"
 14#include "fwio.h"
 15#include "bh.h"
 16#include "key.h"
 17#include "scan.h"
 18#include "debug.h"
 19#include "hif_tx.h"
 20#include "hif_tx_mib.h"
 21
 22#define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2
 23
 24void wfx_cooling_timeout_work(struct work_struct *work)
 25{
 26	struct wfx_dev *wdev = container_of(to_delayed_work(work), struct wfx_dev,
 27					    cooling_timeout_work);
 28
 29	wdev->chip_frozen = true;
 30	wfx_tx_unlock(wdev);
 31}
 32
 33void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd)
 34{
 35	if (cmd == STA_NOTIFY_AWAKE) {
 36		/* Device recover normal temperature */
 37		if (cancel_delayed_work(&wdev->cooling_timeout_work))
 38			wfx_tx_unlock(wdev);
 39	} else {
 40		/* Device is too hot */
 41		schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ);
 42		wfx_tx_lock(wdev);
 43	}
 44}
 45
 46static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon)
 47{
 48	static const struct wfx_hif_ie_table_entry filter_ies[] = {
 49		{
 50			.ie_id        = WLAN_EID_VENDOR_SPECIFIC,
 51			.has_changed  = 1,
 52			.no_longer    = 1,
 53			.has_appeared = 1,
 54			.oui          = { 0x50, 0x6F, 0x9A },
 55		}, {
 56			.ie_id        = WLAN_EID_HT_OPERATION,
 57			.has_changed  = 1,
 58			.no_longer    = 1,
 59			.has_appeared = 1,
 60		}, {
 61			.ie_id        = WLAN_EID_ERP_INFO,
 62			.has_changed  = 1,
 63			.no_longer    = 1,
 64			.has_appeared = 1,
 65		}, {
 66			.ie_id        = WLAN_EID_CHANNEL_SWITCH,
 67			.has_changed  = 1,
 68			.no_longer    = 1,
 69			.has_appeared = 1,
 70		}
 71	};
 72
 73	if (!filter_beacon) {
 74		wfx_hif_beacon_filter_control(wvif, 0, 1);
 75	} else {
 76		wfx_hif_set_beacon_filter_table(wvif, ARRAY_SIZE(filter_ies), filter_ies);
 77		wfx_hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0);
 78	}
 79}
 80
 81void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 82			  unsigned int *total_flags, u64 unused)
 83{
 84	bool filter_bssid, filter_prbreq, filter_beacon;
 85	struct ieee80211_vif *vif = NULL;
 86	struct wfx_dev *wdev = hw->priv;
 87	struct wfx_vif *wvif = NULL;
 88
 89	/* Notes:
 90	 *   - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
 91	 *   - PS-Poll (FIF_PSPOLL) are never filtered
 92	 *   - RTS, CTS and Ack (FIF_CONTROL) are always filtered
 93	 *   - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
 94	 *   - Firmware does (yet) allow to forward unicast traffic sent to other stations (aka.
 95	 *     promiscuous mode)
 96	 */
 97	*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
 98			FIF_PROBE_REQ | FIF_PSPOLL;
 99
100	/* Filters are ignored during the scan. No frames are filtered. */
101	if (mutex_is_locked(&wdev->scan_lock))
102		return;
103
104	mutex_lock(&wdev->conf_mutex);
105	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
106		/* Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
107		 * beacons from other BSS
108		 */
109		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
110			filter_beacon = false;
111		else
112			filter_beacon = true;
113		wfx_filter_beacon(wvif, filter_beacon);
114
115		if (*total_flags & FIF_OTHER_BSS)
116			filter_bssid = false;
117		else
118			filter_bssid = true;
119
120		vif = wvif_to_vif(wvif);
121		/* In AP mode, chip can reply to probe request itself */
122		if (*total_flags & FIF_PROBE_REQ && vif->type == NL80211_IFTYPE_AP) {
123			dev_dbg(wdev->dev, "do not forward probe request in AP mode\n");
124			*total_flags &= ~FIF_PROBE_REQ;
125		}
126
127		if (*total_flags & FIF_PROBE_REQ)
128			filter_prbreq = false;
129		else
130			filter_prbreq = true;
131		wfx_hif_set_rx_filter(wvif, filter_bssid, filter_prbreq);
132	}
133	mutex_unlock(&wdev->conf_mutex);
134}
135
136static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
137{
138	struct ieee80211_channel *chan0 = NULL, *chan1 = NULL;
139	struct ieee80211_conf *conf = &wvif->wdev->hw->conf;
140	struct ieee80211_vif *vif = wvif_to_vif(wvif);
141
142	WARN(!vif->cfg.assoc && enable_ps,
143	     "enable_ps is reliable only if associated");
144	if (wdev_to_wvif(wvif->wdev, 0)) {
145		struct wfx_vif *wvif_ch0 = wdev_to_wvif(wvif->wdev, 0);
146		struct ieee80211_vif *vif_ch0 = wvif_to_vif(wvif_ch0);
147
148		chan0 = vif_ch0->bss_conf.chanreq.oper.chan;
149	}
150	if (wdev_to_wvif(wvif->wdev, 1)) {
151		struct wfx_vif *wvif_ch1 = wdev_to_wvif(wvif->wdev, 1);
152		struct ieee80211_vif *vif_ch1 = wvif_to_vif(wvif_ch1);
153
154		chan1 = vif_ch1->bss_conf.chanreq.oper.chan;
155	}
156	if (chan0 && chan1 && vif->type != NL80211_IFTYPE_AP) {
157		if (chan0->hw_value == chan1->hw_value) {
158			/* It is useless to enable PS if channels are the same. */
159			if (enable_ps)
160				*enable_ps = false;
161			if (vif->cfg.assoc && vif->cfg.ps)
162				dev_info(wvif->wdev->dev, "ignoring requested PS mode");
163			return -1;
164		}
165		/* It is necessary to enable PS if channels are different. */
166		if (enable_ps)
167			*enable_ps = true;
168		if (wfx_api_older_than(wvif->wdev, 3, 2))
169			return 0;
170		else
171			return 30;
172	}
173	if (enable_ps)
174		*enable_ps = vif->cfg.ps;
175	if (vif->cfg.assoc && vif->cfg.ps)
176		return conf->dynamic_ps_timeout;
177	else
178		return -1;
179}
180
181int wfx_update_pm(struct wfx_vif *wvif)
182{
183	struct ieee80211_vif *vif = wvif_to_vif(wvif);
184	int ps_timeout;
185	bool ps;
186
187	if (!vif->cfg.assoc)
188		return 0;
189	ps_timeout = wfx_get_ps_timeout(wvif, &ps);
190	if (!ps)
191		ps_timeout = 0;
192	WARN_ON(ps_timeout < 0);
193	if (wvif->uapsd_mask)
194		ps_timeout = 0;
195
196	if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete, TU_TO_JIFFIES(512)))
197		dev_warn(wvif->wdev->dev, "timeout while waiting of set_pm_mode_complete\n");
198	return wfx_hif_set_pm(wvif, ps, ps_timeout);
199}
200
201int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
202		unsigned int link_id, u16 queue,
203		const struct ieee80211_tx_queue_params *params)
204{
205	struct wfx_dev *wdev = hw->priv;
206	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
207	int old_uapsd = wvif->uapsd_mask;
208
209	WARN_ON(queue >= hw->queues);
210
211	mutex_lock(&wdev->conf_mutex);
212	assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
213	wfx_hif_set_edca_queue_params(wvif, queue, params);
214	if (vif->type == NL80211_IFTYPE_STATION &&
215	    old_uapsd != wvif->uapsd_mask) {
216		wfx_hif_set_uapsd_info(wvif, wvif->uapsd_mask);
217		wfx_update_pm(wvif);
218	}
219	mutex_unlock(&wdev->conf_mutex);
220	return 0;
221}
222
223int wfx_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, u32 value)
224{
225	struct wfx_dev *wdev = hw->priv;
226	struct wfx_vif *wvif = NULL;
227
228	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
229		wfx_hif_rts_threshold(wvif, value);
230	return 0;
231}
232
233void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi)
234{
235	/* RSSI: signed Q8.0, RCPI: unsigned Q7.1
236	 * RSSI = RCPI / 2 - 110
237	 */
238	struct ieee80211_vif *vif = wvif_to_vif(wvif);
239	int rcpi_rssi;
240	int cqm_evt;
241
242	rcpi_rssi = raw_rcpi_rssi / 2 - 110;
243	if (rcpi_rssi <= vif->bss_conf.cqm_rssi_thold)
244		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
245	else
246		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
247	ieee80211_cqm_rssi_notify(vif, cqm_evt, rcpi_rssi, GFP_KERNEL);
248}
249
250static void wfx_beacon_loss_work(struct work_struct *work)
251{
252	struct wfx_vif *wvif = container_of(to_delayed_work(work), struct wfx_vif,
253					    beacon_loss_work);
254	struct ieee80211_vif *vif = wvif_to_vif(wvif);
255	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
256
257	ieee80211_beacon_loss(vif);
258	schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(bss_conf->beacon_int));
259}
260
261void wfx_set_default_unicast_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int idx)
262{
263	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
264
265	wfx_hif_wep_default_key_id(wvif, idx);
266}
267
268void wfx_reset(struct wfx_vif *wvif)
269{
270	struct wfx_dev *wdev = wvif->wdev;
271
272	wfx_tx_lock_flush(wdev);
273	wfx_hif_reset(wvif, false);
274	wfx_tx_policy_init(wvif);
275	if (wvif_count(wdev) <= 1)
276		wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
277	wfx_tx_unlock(wdev);
278	wvif->join_in_progress = false;
279	cancel_delayed_work_sync(&wvif->beacon_loss_work);
280	wvif =  NULL;
281	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
282		wfx_update_pm(wvif);
283}
284
285int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
286{
287	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
288	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
289
290	sta_priv->vif_id = wvif->id;
291
292	if (vif->type == NL80211_IFTYPE_STATION)
293		wfx_hif_set_mfp(wvif, sta->mfp, sta->mfp);
294
295	/* In station mode, the firmware interprets new link-id as a TDLS peer */
296	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
297		return 0;
298	sta_priv->link_id = ffz(wvif->link_id_map);
299	wvif->link_id_map |= BIT(sta_priv->link_id);
300	WARN_ON(!sta_priv->link_id);
301	WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX);
302	wfx_hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp);
303
304	return 0;
305}
306
307int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
308{
309	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
310	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
311
312	/* See note in wfx_sta_add() */
313	if (!sta_priv->link_id)
314		return 0;
315	/* FIXME add a mutex? */
316	wfx_hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false);
317	wvif->link_id_map &= ~BIT(sta_priv->link_id);
318	return 0;
319}
320
321static int wfx_upload_ap_templates(struct wfx_vif *wvif)
322{
323	struct ieee80211_vif *vif = wvif_to_vif(wvif);
324	struct sk_buff *skb;
325
326	skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
327	if (!skb)
328		return -ENOMEM;
329	wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN, API_RATE_INDEX_B_1MBPS);
330	dev_kfree_skb(skb);
331
332	skb = ieee80211_proberesp_get(wvif->wdev->hw, vif);
333	if (!skb)
334		return -ENOMEM;
335	wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES, API_RATE_INDEX_B_1MBPS);
336	dev_kfree_skb(skb);
337	return 0;
338}
339
340static int wfx_set_mfp_ap(struct wfx_vif *wvif)
341{
342	struct ieee80211_vif *vif = wvif_to_vif(wvif);
343	struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
344	const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
345	const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16);
346	const int pairwise_cipher_suite_size = 4 / sizeof(u16);
347	const int akm_suite_size = 4 / sizeof(u16);
348	int ret = -EINVAL;
349	const u16 *ptr;
350
351	if (unlikely(!skb))
352		return -ENOMEM;
353
354	ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, skb->data + ieoffset,
355				      skb->len - ieoffset);
356	if (!ptr) {
357		/* No RSN IE is fine in open networks */
358		ret = 0;
359		goto free_skb;
360	}
361
362	ptr += pairwise_cipher_suite_count_offset;
363	if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
364		goto free_skb;
365
366	ptr += 1 + pairwise_cipher_suite_size * *ptr;
367	if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
368		goto free_skb;
369
370	ptr += 1 + akm_suite_size * *ptr;
371	if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
372		goto free_skb;
373
374	wfx_hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6));
375	ret = 0;
376
377free_skb:
378	dev_kfree_skb(skb);
379	return ret;
380}
381
382int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
383		 struct ieee80211_bss_conf *link_conf)
384{
385	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
386	struct wfx_dev *wdev = wvif->wdev;
387	int ret;
388
389	wvif =  NULL;
390	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
391		wfx_update_pm(wvif);
392	wvif = (struct wfx_vif *)vif->drv_priv;
393	wfx_upload_ap_templates(wvif);
394	ret = wfx_hif_start(wvif, &vif->bss_conf, wvif->channel);
395	if (ret > 0)
396		return -EIO;
397	return wfx_set_mfp_ap(wvif);
398}
399
400void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
401		 struct ieee80211_bss_conf *link_conf)
402{
403	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
404	struct wfx_dev *wdev = wvif->wdev;
405
406	wvif =  NULL;
407	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
408		wfx_update_pm(wvif);
409	wvif = (struct wfx_vif *)vif->drv_priv;
410	wfx_reset(wvif);
411}
412
413static void wfx_join(struct wfx_vif *wvif)
414{
415	struct ieee80211_vif *vif = wvif_to_vif(wvif);
416	struct ieee80211_bss_conf *conf = &vif->bss_conf;
417	struct cfg80211_bss *bss = NULL;
418	u8 ssid[IEEE80211_MAX_SSID_LEN];
419	const u8 *ssid_ie = NULL;
420	int ssid_len = 0;
421	int ret;
422
423	wfx_tx_lock_flush(wvif->wdev);
424
425	bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel, conf->bssid, NULL, 0,
426			       IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
427	if (!bss && !vif->cfg.ibss_joined) {
428		wfx_tx_unlock(wvif->wdev);
429		return;
430	}
431
432	rcu_read_lock(); /* protect ssid_ie */
433	if (bss)
434		ssid_ie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
435	if (ssid_ie) {
436		ssid_len = ssid_ie[1];
437		if (ssid_len > IEEE80211_MAX_SSID_LEN)
438			ssid_len = IEEE80211_MAX_SSID_LEN;
439		memcpy(ssid, &ssid_ie[2], ssid_len);
440	}
441	rcu_read_unlock();
442
443	cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
444
445	wvif->join_in_progress = true;
446	ret = wfx_hif_join(wvif, conf, wvif->channel, ssid, ssid_len);
447	if (ret) {
448		ieee80211_connection_loss(vif);
449		wfx_reset(wvif);
450	} else {
451		/* Due to beacon filtering it is possible that the AP's beacon is not known for the
452		 * mac80211 stack.  Disable filtering temporary to make sure the stack receives at
453		 * least one
454		 */
455		wfx_filter_beacon(wvif, false);
456	}
457	wfx_tx_unlock(wvif->wdev);
458}
459
460static void wfx_join_finalize(struct wfx_vif *wvif, struct ieee80211_bss_conf *info)
461{
462	struct ieee80211_vif *vif = wvif_to_vif(wvif);
463	struct ieee80211_sta *sta = NULL;
464	int ampdu_density = 0;
465	bool greenfield = false;
466
467	rcu_read_lock(); /* protect sta */
468	if (info->bssid && !vif->cfg.ibss_joined)
469		sta = ieee80211_find_sta(vif, info->bssid);
470	if (sta && sta->deflink.ht_cap.ht_supported)
471		ampdu_density = sta->deflink.ht_cap.ampdu_density;
472	if (sta && sta->deflink.ht_cap.ht_supported &&
473	    !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT))
474		greenfield = !!(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD);
475	rcu_read_unlock();
476
477	wvif->join_in_progress = false;
478	wfx_hif_set_association_mode(wvif, ampdu_density, greenfield, info->use_short_preamble);
479	wfx_hif_keep_alive_period(wvif, 0);
480	/* beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use the same value. */
481	wfx_hif_set_bss_params(wvif, vif->cfg.aid, 7);
482	wfx_hif_set_beacon_wakeup_period(wvif, 1, 1);
483	wfx_update_pm(wvif);
484}
485
486int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
487{
488	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
489
490	wfx_upload_ap_templates(wvif);
491	wfx_join(wvif);
492	return 0;
493}
494
495void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
496{
497	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
498
499	wfx_reset(wvif);
500}
501
502static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable)
503{
504	/* Driver has Content After DTIM Beacon in queue. Driver is waiting for a signal from the
505	 * firmware. Since we are going to stop to send beacons, this signal will never happens. See
506	 * also wfx_suspend_resume_mc()
507	 */
508	if (!enable && wfx_tx_queues_has_cab(wvif)) {
509		wvif->after_dtim_tx_allowed = true;
510		wfx_bh_request_tx(wvif->wdev);
511	}
512	wfx_hif_beacon_transmit(wvif, enable);
513}
514
515void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
516			  struct ieee80211_bss_conf *info, u64 changed)
517{
518	struct wfx_dev *wdev = hw->priv;
519	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
520	int i;
521
522	mutex_lock(&wdev->conf_mutex);
523
524	if (changed & BSS_CHANGED_BASIC_RATES ||
525	    changed & BSS_CHANGED_BEACON_INT ||
526	    changed & BSS_CHANGED_BSSID) {
527		if (vif->type == NL80211_IFTYPE_STATION)
528			wfx_join(wvif);
529	}
530
531	if (changed & BSS_CHANGED_ASSOC) {
532		if (vif->cfg.assoc || vif->cfg.ibss_joined)
533			wfx_join_finalize(wvif, info);
534		else if (!vif->cfg.assoc && vif->type == NL80211_IFTYPE_STATION)
535			wfx_reset(wvif);
536		else
537			dev_warn(wdev->dev, "misunderstood change: ASSOC\n");
538	}
539
540	if (changed & BSS_CHANGED_BEACON_INFO) {
541		if (vif->type != NL80211_IFTYPE_STATION)
542			dev_warn(wdev->dev, "misunderstood change: BEACON_INFO\n");
543		wfx_hif_set_beacon_wakeup_period(wvif, info->dtim_period, info->dtim_period);
544		/* We temporary forwarded beacon for join process. It is now no more necessary. */
545		wfx_filter_beacon(wvif, true);
546	}
547
548	if (changed & BSS_CHANGED_ARP_FILTER) {
549		for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) {
550			__be32 *arp_addr = &vif->cfg.arp_addr_list[i];
551
552			if (vif->cfg.arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES)
553				arp_addr = NULL;
554			if (i >= vif->cfg.arp_addr_cnt)
555				arp_addr = NULL;
556			wfx_hif_set_arp_ipv4_filter(wvif, i, arp_addr);
557		}
558	}
559
560	if (changed & BSS_CHANGED_AP_PROBE_RESP || changed & BSS_CHANGED_BEACON)
561		wfx_upload_ap_templates(wvif);
562
563	if (changed & BSS_CHANGED_BEACON_ENABLED)
564		wfx_enable_beacon(wvif, info->enable_beacon);
565
566	if (changed & BSS_CHANGED_KEEP_ALIVE)
567		wfx_hif_keep_alive_period(wvif,
568					  info->max_idle_period * USEC_PER_TU / USEC_PER_MSEC);
569
570	if (changed & BSS_CHANGED_ERP_CTS_PROT)
571		wfx_hif_erp_use_protection(wvif, info->use_cts_prot);
572
573	if (changed & BSS_CHANGED_ERP_SLOT)
574		wfx_hif_slot_time(wvif, info->use_short_slot ? 9 : 20);
575
576	if (changed & BSS_CHANGED_CQM)
577		wfx_hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold, info->cqm_rssi_hyst);
578
579	if (changed & BSS_CHANGED_TXPOWER)
580		wfx_hif_set_output_power(wvif, info->txpower);
581
582	if (changed & BSS_CHANGED_PS)
583		wfx_update_pm(wvif);
584
585	mutex_unlock(&wdev->conf_mutex);
586}
587
588static int wfx_update_tim(struct wfx_vif *wvif)
589{
590	struct ieee80211_vif *vif = wvif_to_vif(wvif);
591	struct sk_buff *skb;
592	u16 tim_offset, tim_length;
593	u8 *tim_ptr;
594
595	skb = ieee80211_beacon_get_tim(wvif->wdev->hw, vif, &tim_offset,
596				       &tim_length, 0);
597	if (!skb)
598		return -ENOENT;
599	tim_ptr = skb->data + tim_offset;
600
601	if (tim_offset && tim_length >= 6) {
602		/* Firmware handles DTIM counter internally */
603		tim_ptr[2] = 0;
604
605		/* Set/reset aid0 bit */
606		if (wfx_tx_queues_has_cab(wvif))
607			tim_ptr[4] |= 1;
608		else
609			tim_ptr[4] &= ~1;
610	}
611
612	wfx_hif_update_ie_beacon(wvif, tim_ptr, tim_length);
613	dev_kfree_skb(skb);
614
615	return 0;
616}
617
618static void wfx_update_tim_work(struct work_struct *work)
619{
620	struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work);
621
622	wfx_update_tim(wvif);
623}
624
625int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
626{
627	struct wfx_dev *wdev = hw->priv;
628	struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv;
629	struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id);
630
631	if (!wvif) {
632		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
633		return -EIO;
634	}
635	schedule_work(&wvif->update_tim_work);
636	return 0;
637}
638
639void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd)
640{
641	if (notify_cmd != STA_NOTIFY_AWAKE)
642		return;
643
644	/* Device won't be able to honor CAB if a scan is in progress on any interface. Prefer to
645	 * skip this DTIM and wait for the next one.
646	 */
647	if (mutex_is_locked(&wvif->wdev->scan_lock))
648		return;
649
650	if (!wfx_tx_queues_has_cab(wvif) || wvif->after_dtim_tx_allowed)
651		dev_warn(wvif->wdev->dev, "incorrect sequence (%d CAB in queue)",
652			 wfx_tx_queues_has_cab(wvif));
653	wvif->after_dtim_tx_allowed = true;
654	wfx_bh_request_tx(wvif->wdev);
655}
656
657int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
658		     struct ieee80211_ampdu_params *params)
659{
660	/* Aggregation is implemented fully in firmware */
661	switch (params->action) {
662	case IEEE80211_AMPDU_RX_START:
663	case IEEE80211_AMPDU_RX_STOP:
664		/* Just acknowledge it to enable frame re-ordering */
665		return 0;
666	default:
667		/* Leave the firmware doing its business for tx aggregation */
668		return -EOPNOTSUPP;
669	}
670}
671
672int wfx_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
673{
674	return 0;
675}
676
677void wfx_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
678{
679}
680
681void wfx_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf, u32 changed)
682{
683}
684
685int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
686			   struct ieee80211_bss_conf *link_conf,
687			   struct ieee80211_chanctx_conf *conf)
688{
689	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
690	struct ieee80211_channel *ch = conf->def.chan;
691
692	WARN(wvif->channel, "channel overwrite");
693	wvif->channel = ch;
694
695	return 0;
696}
697
698void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
699			      struct ieee80211_bss_conf *link_conf,
700			      struct ieee80211_chanctx_conf *conf)
701{
702	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
703	struct ieee80211_channel *ch = conf->def.chan;
704
705	WARN(wvif->channel != ch, "channel mismatch");
706	wvif->channel = NULL;
707}
708
709int wfx_config(struct ieee80211_hw *hw, int radio_idx, u32 changed)
710{
711	return 0;
712}
713
714int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
715{
716	int i;
717	struct wfx_dev *wdev = hw->priv;
718	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
719
720	vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
721			     IEEE80211_VIF_SUPPORTS_UAPSD |
722			     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
723
724	mutex_lock(&wdev->conf_mutex);
725
726	switch (vif->type) {
727	case NL80211_IFTYPE_STATION:
728	case NL80211_IFTYPE_ADHOC:
729	case NL80211_IFTYPE_AP:
730		break;
731	default:
732		mutex_unlock(&wdev->conf_mutex);
733		return -EOPNOTSUPP;
734	}
735
736	wvif->wdev = wdev;
737
738	wvif->link_id_map = 1; /* link-id 0 is reserved for multicast */
739	INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work);
740	INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work);
741
742	init_completion(&wvif->set_pm_mode_complete);
743	complete(&wvif->set_pm_mode_complete);
744	INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work);
745
746	init_completion(&wvif->scan_complete);
747	INIT_WORK(&wvif->scan_work, wfx_hw_scan_work);
748	INIT_WORK(&wvif->remain_on_channel_work, wfx_remain_on_channel_work);
749
750	wfx_tx_queues_init(wvif);
751	wfx_tx_policy_init(wvif);
752
753	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
754		if (!wdev->vif[i]) {
755			wdev->vif[i] = vif;
756			wvif->id = i;
757			break;
758		}
759	}
760	WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported");
761
762	wfx_hif_set_macaddr(wvif, vif->addr);
763
764	mutex_unlock(&wdev->conf_mutex);
765
766	wvif = NULL;
767	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
768		/* Combo mode does not support Block Acks. We can re-enable them */
769		if (wvif_count(wdev) == 1)
770			wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
771		else
772			wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
773	}
774	return 0;
775}
776
777void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
778{
779	struct wfx_dev *wdev = hw->priv;
780	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
781
782	wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300));
783	wfx_tx_queues_check_empty(wvif);
784
785	mutex_lock(&wdev->conf_mutex);
786	WARN(wvif->link_id_map != 1, "corrupted state");
787
788	wfx_hif_reset(wvif, false);
789	wfx_hif_set_macaddr(wvif, NULL);
790	wfx_tx_policy_init(wvif);
791
792	cancel_delayed_work_sync(&wvif->beacon_loss_work);
793	wdev->vif[wvif->id] = NULL;
794
795	mutex_unlock(&wdev->conf_mutex);
796
797	wvif = NULL;
798	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
799		/* Combo mode does not support Block Acks. We can re-enable them */
800		if (wvif_count(wdev) == 1)
801			wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
802		else
803			wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
804	}
805}
806
807#ifdef CONFIG_PM
808int wfx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
809{
810	/* FIXME: hardware also support WIPHY_WOWLAN_MAGIC_PKT and other filters */
811	if (!wowlan->any || !wowlan->disconnect)
812		return -EINVAL;
813	return 0;
814}
815
816int wfx_resume(struct ieee80211_hw *hw)
817{
818	return 0;
819}
820
821void wfx_set_wakeup(struct ieee80211_hw *hw, bool enabled)
822{
823	struct wfx_dev *wdev = hw->priv;
824
825	if (enabled)
826		dev_info(wdev->dev, "support for WoWLAN is experimental\n");
827	wdev->hwbus_ops->set_wakeup(wdev->hwbus_priv, enabled);
828}
829#endif
830
831int wfx_start(struct ieee80211_hw *hw)
832{
833	return 0;
834}
835
836void wfx_stop(struct ieee80211_hw *hw, bool suspend)
837{
838	struct wfx_dev *wdev = hw->priv;
839
840	WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending));
841}