2 * cfg80211 MLME SAP interface
4 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
5 * Copyright (c) 2015 Intel Deutschland GmbH
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/nl80211.h>
13 #include <linux/slab.h>
14 #include <linux/wireless.h>
15 #include <net/cfg80211.h>
16 #include <net/iw_handler.h>
22 void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
23 const u8 *buf, size_t len, int uapsd_queues)
25 struct wireless_dev *wdev = dev->ieee80211_ptr;
26 struct wiphy *wiphy = wdev->wiphy;
27 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
28 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
29 u8 *ie = mgmt->u.assoc_resp.variable;
30 int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
31 u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
33 trace_cfg80211_send_rx_assoc(dev, bss);
36 * This is a bit of a hack, we don't notify userspace of
37 * a (re-)association reply if we tried to send a reassoc
38 * and got a reject -- we only try again with an assoc
39 * frame instead of reassoc.
41 if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) {
42 cfg80211_unhold_bss(bss_from_pub(bss));
43 cfg80211_put_bss(wiphy, bss);
47 nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL, uapsd_queues);
48 /* update current_bss etc., consumes the bss reference */
49 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
51 status_code == WLAN_STATUS_SUCCESS, bss);
53 EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
55 static void cfg80211_process_auth(struct wireless_dev *wdev,
56 const u8 *buf, size_t len)
58 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
60 nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
61 cfg80211_sme_rx_auth(wdev, buf, len);
64 static void cfg80211_process_deauth(struct wireless_dev *wdev,
65 const u8 *buf, size_t len)
67 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
68 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
69 const u8 *bssid = mgmt->bssid;
70 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
71 bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
73 nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
75 if (!wdev->current_bss ||
76 !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
79 __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
80 cfg80211_sme_deauth(wdev);
83 static void cfg80211_process_disassoc(struct wireless_dev *wdev,
84 const u8 *buf, size_t len)
86 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
87 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
88 const u8 *bssid = mgmt->bssid;
89 u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
90 bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
92 nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL);
94 if (WARN_ON(!wdev->current_bss ||
95 !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
98 __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
99 cfg80211_sme_disassoc(wdev);
102 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
104 struct wireless_dev *wdev = dev->ieee80211_ptr;
105 struct ieee80211_mgmt *mgmt = (void *)buf;
107 ASSERT_WDEV_LOCK(wdev);
109 trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
111 if (WARN_ON(len < 2))
114 if (ieee80211_is_auth(mgmt->frame_control))
115 cfg80211_process_auth(wdev, buf, len);
116 else if (ieee80211_is_deauth(mgmt->frame_control))
117 cfg80211_process_deauth(wdev, buf, len);
118 else if (ieee80211_is_disassoc(mgmt->frame_control))
119 cfg80211_process_disassoc(wdev, buf, len);
121 EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
123 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
125 struct wireless_dev *wdev = dev->ieee80211_ptr;
126 struct wiphy *wiphy = wdev->wiphy;
127 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
129 trace_cfg80211_send_auth_timeout(dev, addr);
131 nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
132 cfg80211_sme_auth_timeout(wdev);
134 EXPORT_SYMBOL(cfg80211_auth_timeout);
136 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss)
138 struct wireless_dev *wdev = dev->ieee80211_ptr;
139 struct wiphy *wiphy = wdev->wiphy;
140 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
142 trace_cfg80211_send_assoc_timeout(dev, bss->bssid);
144 nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL);
145 cfg80211_sme_assoc_timeout(wdev);
147 cfg80211_unhold_bss(bss_from_pub(bss));
148 cfg80211_put_bss(wiphy, bss);
150 EXPORT_SYMBOL(cfg80211_assoc_timeout);
152 void cfg80211_abandon_assoc(struct net_device *dev, struct cfg80211_bss *bss)
154 struct wireless_dev *wdev = dev->ieee80211_ptr;
155 struct wiphy *wiphy = wdev->wiphy;
157 cfg80211_sme_abandon_assoc(wdev);
159 cfg80211_unhold_bss(bss_from_pub(bss));
160 cfg80211_put_bss(wiphy, bss);
162 EXPORT_SYMBOL(cfg80211_abandon_assoc);
164 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
166 struct wireless_dev *wdev = dev->ieee80211_ptr;
167 struct ieee80211_mgmt *mgmt = (void *)buf;
169 ASSERT_WDEV_LOCK(wdev);
171 trace_cfg80211_tx_mlme_mgmt(dev, buf, len);
173 if (WARN_ON(len < 2))
176 if (ieee80211_is_deauth(mgmt->frame_control))
177 cfg80211_process_deauth(wdev, buf, len);
179 cfg80211_process_disassoc(wdev, buf, len);
181 EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
183 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
184 enum nl80211_key_type key_type, int key_id,
185 const u8 *tsc, gfp_t gfp)
187 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
189 #ifdef CONFIG_CFG80211_WEXT
190 union iwreq_data wrqu;
191 char *buf = kmalloc(128, gfp);
194 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
195 "keyid=%d %scast addr=%pM)", key_id,
196 key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
198 memset(&wrqu, 0, sizeof(wrqu));
199 wrqu.data.length = strlen(buf);
200 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
205 trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc);
206 nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
208 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
210 /* some MLME handling for userspace SME */
211 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
212 struct net_device *dev,
213 struct ieee80211_channel *chan,
214 enum nl80211_auth_type auth_type,
216 const u8 *ssid, int ssid_len,
217 const u8 *ie, int ie_len,
218 const u8 *key, int key_len, int key_idx,
219 const u8 *auth_data, int auth_data_len)
221 struct wireless_dev *wdev = dev->ieee80211_ptr;
222 struct cfg80211_auth_request req = {
225 .auth_data = auth_data,
226 .auth_data_len = auth_data_len,
227 .auth_type = auth_type,
234 ASSERT_WDEV_LOCK(wdev);
236 if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
237 if (!key || !key_len || key_idx < 0 || key_idx > 3)
240 if (wdev->current_bss &&
241 ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
244 req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
245 IEEE80211_BSS_TYPE_ESS,
246 IEEE80211_PRIVACY_ANY);
250 err = rdev_auth(rdev, dev, &req);
252 cfg80211_put_bss(&rdev->wiphy, req.bss);
256 /* Do a logical ht_capa &= ht_capa_mask. */
257 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
258 const struct ieee80211_ht_cap *ht_capa_mask)
263 memset(ht_capa, 0, sizeof(*ht_capa));
268 p2 = (u8*)(ht_capa_mask);
269 for (i = 0; i<sizeof(*ht_capa); i++)
273 /* Do a logical ht_capa &= ht_capa_mask. */
274 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
275 const struct ieee80211_vht_cap *vht_capa_mask)
279 if (!vht_capa_mask) {
280 memset(vht_capa, 0, sizeof(*vht_capa));
284 p1 = (u8*)(vht_capa);
285 p2 = (u8*)(vht_capa_mask);
286 for (i = 0; i < sizeof(*vht_capa); i++)
290 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
291 struct net_device *dev,
292 struct ieee80211_channel *chan,
294 const u8 *ssid, int ssid_len,
295 struct cfg80211_assoc_request *req)
297 struct wireless_dev *wdev = dev->ieee80211_ptr;
300 ASSERT_WDEV_LOCK(wdev);
302 if (wdev->current_bss &&
303 (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid,
307 cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
308 rdev->wiphy.ht_capa_mod_mask);
309 cfg80211_oper_and_vht_capa(&req->vht_capa_mask,
310 rdev->wiphy.vht_capa_mod_mask);
312 req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
313 IEEE80211_BSS_TYPE_ESS,
314 IEEE80211_PRIVACY_ANY);
318 err = rdev_assoc(rdev, dev, req);
320 cfg80211_hold_bss(bss_from_pub(req->bss));
322 cfg80211_put_bss(&rdev->wiphy, req->bss);
327 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
328 struct net_device *dev, const u8 *bssid,
329 const u8 *ie, int ie_len, u16 reason,
330 bool local_state_change)
332 struct wireless_dev *wdev = dev->ieee80211_ptr;
333 struct cfg80211_deauth_request req = {
335 .reason_code = reason,
338 .local_state_change = local_state_change,
341 ASSERT_WDEV_LOCK(wdev);
343 if (local_state_change &&
344 (!wdev->current_bss ||
345 !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
348 if (ether_addr_equal(wdev->disconnect_bssid, bssid) ||
349 (wdev->current_bss &&
350 ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
351 wdev->conn_owner_nlportid = 0;
353 return rdev_deauth(rdev, dev, &req);
356 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
357 struct net_device *dev, const u8 *bssid,
358 const u8 *ie, int ie_len, u16 reason,
359 bool local_state_change)
361 struct wireless_dev *wdev = dev->ieee80211_ptr;
362 struct cfg80211_disassoc_request req = {
363 .reason_code = reason,
364 .local_state_change = local_state_change,
370 ASSERT_WDEV_LOCK(wdev);
372 if (!wdev->current_bss)
375 if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
376 req.bss = &wdev->current_bss->pub;
380 err = rdev_disassoc(rdev, dev, &req);
384 /* driver should have reported the disassoc */
385 WARN_ON(wdev->current_bss);
389 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
390 struct net_device *dev)
392 struct wireless_dev *wdev = dev->ieee80211_ptr;
395 ASSERT_WDEV_LOCK(wdev);
397 if (!rdev->ops->deauth)
400 if (!wdev->current_bss)
403 memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
404 cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
405 WLAN_REASON_DEAUTH_LEAVING, false);
408 struct cfg80211_mgmt_registration {
409 struct list_head list;
410 struct wireless_dev *wdev;
422 cfg80211_process_mlme_unregistrations(struct cfg80211_registered_device *rdev)
424 struct cfg80211_mgmt_registration *reg;
428 spin_lock_bh(&rdev->mlme_unreg_lock);
429 while ((reg = list_first_entry_or_null(&rdev->mlme_unreg,
430 struct cfg80211_mgmt_registration,
432 list_del(®->list);
433 spin_unlock_bh(&rdev->mlme_unreg_lock);
435 if (rdev->ops->mgmt_frame_register) {
436 u16 frame_type = le16_to_cpu(reg->frame_type);
438 rdev_mgmt_frame_register(rdev, reg->wdev,
444 spin_lock_bh(&rdev->mlme_unreg_lock);
446 spin_unlock_bh(&rdev->mlme_unreg_lock);
449 void cfg80211_mlme_unreg_wk(struct work_struct *wk)
451 struct cfg80211_registered_device *rdev;
453 rdev = container_of(wk, struct cfg80211_registered_device,
457 cfg80211_process_mlme_unregistrations(rdev);
461 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
462 u16 frame_type, const u8 *match_data,
465 struct wiphy *wiphy = wdev->wiphy;
466 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
467 struct cfg80211_mgmt_registration *reg, *nreg;
471 if (!wdev->wiphy->mgmt_stypes)
474 if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
477 if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
480 mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
481 if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type)))
484 nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
488 spin_lock_bh(&wdev->mgmt_registrations_lock);
490 list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
491 int mlen = min(match_len, reg->match_len);
493 if (frame_type != le16_to_cpu(reg->frame_type))
496 if (memcmp(reg->match, match_data, mlen) == 0) {
507 memcpy(nreg->match, match_data, match_len);
508 nreg->match_len = match_len;
509 nreg->nlportid = snd_portid;
510 nreg->frame_type = cpu_to_le16(frame_type);
512 list_add(&nreg->list, &wdev->mgmt_registrations);
513 spin_unlock_bh(&wdev->mgmt_registrations_lock);
515 /* process all unregistrations to avoid driver confusion */
516 cfg80211_process_mlme_unregistrations(rdev);
518 if (rdev->ops->mgmt_frame_register)
519 rdev_mgmt_frame_register(rdev, wdev, frame_type, true);
524 spin_unlock_bh(&wdev->mgmt_registrations_lock);
529 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
531 struct wiphy *wiphy = wdev->wiphy;
532 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
533 struct cfg80211_mgmt_registration *reg, *tmp;
535 spin_lock_bh(&wdev->mgmt_registrations_lock);
537 list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
538 if (reg->nlportid != nlportid)
541 list_del(®->list);
542 spin_lock(&rdev->mlme_unreg_lock);
543 list_add_tail(®->list, &rdev->mlme_unreg);
544 spin_unlock(&rdev->mlme_unreg_lock);
546 schedule_work(&rdev->mlme_unreg_wk);
549 spin_unlock_bh(&wdev->mgmt_registrations_lock);
551 if (nlportid && rdev->crit_proto_nlportid == nlportid) {
552 rdev->crit_proto_nlportid = 0;
553 rdev_crit_proto_stop(rdev, wdev);
556 if (nlportid == wdev->ap_unexpected_nlportid)
557 wdev->ap_unexpected_nlportid = 0;
560 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
562 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
564 spin_lock_bh(&wdev->mgmt_registrations_lock);
565 spin_lock(&rdev->mlme_unreg_lock);
566 list_splice_tail_init(&wdev->mgmt_registrations, &rdev->mlme_unreg);
567 spin_unlock(&rdev->mlme_unreg_lock);
568 spin_unlock_bh(&wdev->mgmt_registrations_lock);
570 cfg80211_process_mlme_unregistrations(rdev);
573 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
574 struct wireless_dev *wdev,
575 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
577 const struct ieee80211_mgmt *mgmt;
580 if (!wdev->wiphy->mgmt_stypes)
583 if (!rdev->ops->mgmt_tx)
586 if (params->len < 24 + 1)
589 mgmt = (const struct ieee80211_mgmt *)params->buf;
591 if (!ieee80211_is_mgmt(mgmt->frame_control))
594 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
595 if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
598 if (ieee80211_is_action(mgmt->frame_control) &&
599 mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
604 switch (wdev->iftype) {
605 case NL80211_IFTYPE_ADHOC:
606 case NL80211_IFTYPE_STATION:
607 case NL80211_IFTYPE_P2P_CLIENT:
608 if (!wdev->current_bss) {
613 if (!ether_addr_equal(wdev->current_bss->pub.bssid,
620 * check for IBSS DA must be done by driver as
621 * cfg80211 doesn't track the stations
623 if (wdev->iftype == NL80211_IFTYPE_ADHOC)
626 /* for station, check that DA is the AP */
627 if (!ether_addr_equal(wdev->current_bss->pub.bssid,
633 case NL80211_IFTYPE_AP:
634 case NL80211_IFTYPE_P2P_GO:
635 case NL80211_IFTYPE_AP_VLAN:
636 if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)))
639 case NL80211_IFTYPE_MESH_POINT:
640 if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
645 * check for mesh DA must be done by driver as
646 * cfg80211 doesn't track the stations
649 case NL80211_IFTYPE_P2P_DEVICE:
651 * fall through, P2P device only supports
652 * public action frames
654 case NL80211_IFTYPE_NAN:
665 if (!ether_addr_equal(mgmt->sa, wdev_address(wdev)))
668 /* Transmit the Action frame as requested by user space */
669 return rdev_mgmt_tx(rdev, wdev, params, cookie);
672 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm,
673 const u8 *buf, size_t len, u32 flags)
675 struct wiphy *wiphy = wdev->wiphy;
676 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
677 struct cfg80211_mgmt_registration *reg;
678 const struct ieee80211_txrx_stypes *stypes =
679 &wiphy->mgmt_stypes[wdev->iftype];
680 struct ieee80211_mgmt *mgmt = (void *)buf;
684 __le16 ftype = mgmt->frame_control &
685 cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
688 trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm);
689 stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
691 if (!(stypes->rx & BIT(stype))) {
692 trace_cfg80211_return_bool(false);
696 data = buf + ieee80211_hdrlen(mgmt->frame_control);
697 data_len = len - ieee80211_hdrlen(mgmt->frame_control);
699 spin_lock_bh(&wdev->mgmt_registrations_lock);
701 list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
702 if (reg->frame_type != ftype)
705 if (reg->match_len > data_len)
708 if (memcmp(reg->match, data, reg->match_len))
713 /* Indicate the received Action frame to user space */
714 if (nl80211_send_mgmt(rdev, wdev, reg->nlportid,
716 buf, len, flags, GFP_ATOMIC))
723 spin_unlock_bh(&wdev->mgmt_registrations_lock);
725 trace_cfg80211_return_bool(result);
728 EXPORT_SYMBOL(cfg80211_rx_mgmt);
730 void cfg80211_dfs_channels_update_work(struct work_struct *work)
732 struct delayed_work *delayed_work = to_delayed_work(work);
733 struct cfg80211_registered_device *rdev;
734 struct cfg80211_chan_def chandef;
735 struct ieee80211_supported_band *sband;
736 struct ieee80211_channel *c;
738 bool check_again = false;
739 unsigned long timeout, next_time = 0;
742 rdev = container_of(delayed_work, struct cfg80211_registered_device,
743 dfs_update_channels_wk);
744 wiphy = &rdev->wiphy;
747 for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) {
748 sband = wiphy->bands[bandid];
752 for (i = 0; i < sband->n_channels; i++) {
753 c = &sband->channels[i];
755 if (c->dfs_state != NL80211_DFS_UNAVAILABLE)
758 timeout = c->dfs_state_entered + msecs_to_jiffies(
759 IEEE80211_DFS_MIN_NOP_TIME_MS);
761 if (time_after_eq(jiffies, timeout)) {
762 c->dfs_state = NL80211_DFS_USABLE;
763 c->dfs_state_entered = jiffies;
765 cfg80211_chandef_create(&chandef, c,
768 nl80211_radar_notify(rdev, &chandef,
769 NL80211_RADAR_NOP_FINISHED,
775 next_time = timeout - jiffies;
777 next_time = min(next_time, timeout - jiffies);
783 /* reschedule if there are other channels waiting to be cleared again */
785 queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
790 void cfg80211_radar_event(struct wiphy *wiphy,
791 struct cfg80211_chan_def *chandef,
794 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
795 unsigned long timeout;
797 trace_cfg80211_radar_event(wiphy, chandef);
799 /* only set the chandef supplied channel to unavailable, in
800 * case the radar is detected on only one of multiple channels
801 * spanned by the chandef.
803 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
805 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS);
806 queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
809 nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
811 EXPORT_SYMBOL(cfg80211_radar_event);
813 void cfg80211_cac_event(struct net_device *netdev,
814 const struct cfg80211_chan_def *chandef,
815 enum nl80211_radar_event event, gfp_t gfp)
817 struct wireless_dev *wdev = netdev->ieee80211_ptr;
818 struct wiphy *wiphy = wdev->wiphy;
819 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
820 unsigned long timeout;
822 trace_cfg80211_cac_event(netdev, event);
824 if (WARN_ON(!wdev->cac_started))
827 if (WARN_ON(!wdev->chandef.chan))
831 case NL80211_RADAR_CAC_FINISHED:
832 timeout = wdev->cac_start_time +
833 msecs_to_jiffies(wdev->cac_time_ms);
834 WARN_ON(!time_after_eq(jiffies, timeout));
835 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
837 case NL80211_RADAR_CAC_ABORTED:
843 wdev->cac_started = false;
845 nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
847 EXPORT_SYMBOL(cfg80211_cac_event);