1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
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39 * modification, are permitted provided that the following conditions
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45 * notice, this list of conditions and the following disclaimer in
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50 * from this software without specific prior written permission.
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62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
66 #include <linux/jiffies.h>
67 #include <net/mac80211.h>
69 #include "iwl-notif-wait.h"
70 #include "iwl-trans.h"
72 #include "time-event.h"
78 * For the high priority TE use a time event type that has similar priority to
79 * the FW's action scan priority.
81 #define IWL_MVM_ROC_TE_TYPE_NORMAL TE_P2P_DEVICE_DISCOVERABLE
82 #define IWL_MVM_ROC_TE_TYPE_MGMT_TX TE_P2P_CLIENT_ASSOC
84 void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
85 struct iwl_mvm_time_event_data *te_data)
87 lockdep_assert_held(&mvm->time_event_lock);
89 if (te_data->id == TE_MAX)
92 list_del(&te_data->list);
93 te_data->running = false;
99 void iwl_mvm_roc_done_wk(struct work_struct *wk)
101 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk);
105 * Clear the ROC_RUNNING /ROC_AUX_RUNNING status bit.
106 * This will cause the TX path to drop offchannel transmissions.
107 * That would also be done by mac80211, but it is racy, in particular
108 * in the case that the time event actually completed in the firmware
109 * (which is handled in iwl_mvm_te_handle_notif).
111 if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
112 queues |= BIT(IWL_MVM_OFFCHANNEL_QUEUE);
113 if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
114 queues |= BIT(mvm->aux_queue);
116 iwl_mvm_unref(mvm, IWL_MVM_REF_ROC);
121 * Flush the offchannel queue -- this is called when the time
122 * event finishes or is cancelled, so that frames queued for it
123 * won't get stuck on the queue and be transmitted in the next
125 * We have to send the command asynchronously since this cannot
126 * be under the mutex for locking reasons, but that's not an
127 * issue as it will have to complete before the next command is
128 * executed, and a new time event means a new command.
130 iwl_mvm_flush_tx_path(mvm, queues, false);
133 static void iwl_mvm_roc_finished(struct iwl_mvm *mvm)
136 * Of course, our status bit is just as racy as mac80211, so in
137 * addition, fire off the work struct which will drop all frames
138 * from the hardware queues that made it through the race. First
139 * it will of course synchronize the TX path to make sure that
140 * any *new* TX will be rejected.
142 schedule_work(&mvm->roc_done_wk);
145 static void iwl_mvm_csa_noa_start(struct iwl_mvm *mvm)
147 struct ieee80211_vif *csa_vif;
151 csa_vif = rcu_dereference(mvm->csa_vif);
152 if (!csa_vif || !csa_vif->csa_active)
155 IWL_DEBUG_TE(mvm, "CSA NOA started\n");
158 * CSA NoA is started but we still have beacons to
159 * transmit on the current channel.
160 * So we just do nothing here and the switch
161 * will be performed on the last TBTT.
163 if (!ieee80211_csa_is_complete(csa_vif)) {
164 IWL_WARN(mvm, "CSA NOA started too early\n");
168 ieee80211_csa_finish(csa_vif);
172 RCU_INIT_POINTER(mvm->csa_vif, NULL);
180 static bool iwl_mvm_te_check_disconnect(struct iwl_mvm *mvm,
181 struct ieee80211_vif *vif,
184 if (vif->type != NL80211_IFTYPE_STATION)
186 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period)
189 IWL_ERR(mvm, "%s\n", errmsg);
190 ieee80211_connection_loss(vif);
195 * Handles a FW notification for an event that is known to the driver.
197 * @mvm: the mvm component
198 * @te_data: the time event data
199 * @notif: the notification data corresponding the time event data.
201 static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
202 struct iwl_mvm_time_event_data *te_data,
203 struct iwl_time_event_notif *notif)
205 lockdep_assert_held(&mvm->time_event_lock);
207 IWL_DEBUG_TE(mvm, "Handle time event notif - UID = 0x%x action %d\n",
208 le32_to_cpu(notif->unique_id),
209 le32_to_cpu(notif->action));
212 * The FW sends the start/end time event notifications even for events
213 * that it fails to schedule. This is indicated in the status field of
214 * the notification. This happens in cases that the scheduler cannot
215 * find a schedule that can handle the event (for example requesting a
216 * P2P Device discoveribility, while there are other higher priority
217 * events in the system).
219 if (!le32_to_cpu(notif->status)) {
220 bool start = le32_to_cpu(notif->action) &
221 TE_V2_NOTIF_HOST_EVENT_START;
222 IWL_WARN(mvm, "Time Event %s notification failure\n",
223 start ? "start" : "end");
224 if (iwl_mvm_te_check_disconnect(mvm, te_data->vif, NULL)) {
225 iwl_mvm_te_clear_data(mvm, te_data);
230 if (le32_to_cpu(notif->action) & TE_V2_NOTIF_HOST_EVENT_END) {
232 "TE ended - current time %lu, estimated end %lu\n",
233 jiffies, te_data->end_jiffies);
235 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
236 ieee80211_remain_on_channel_expired(mvm->hw);
237 iwl_mvm_roc_finished(mvm);
241 * By now, we should have finished association
242 * and know the dtim period.
244 iwl_mvm_te_check_disconnect(mvm, te_data->vif,
245 "No association and the time event is over already...");
246 iwl_mvm_te_clear_data(mvm, te_data);
247 } else if (le32_to_cpu(notif->action) & TE_V2_NOTIF_HOST_EVENT_START) {
248 te_data->running = true;
249 te_data->end_jiffies = TU_TO_EXP_TIME(te_data->duration);
251 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
252 set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
253 iwl_mvm_ref(mvm, IWL_MVM_REF_ROC);
254 ieee80211_ready_on_channel(mvm->hw);
255 } else if (te_data->vif->type == NL80211_IFTYPE_AP) {
256 if (le32_to_cpu(notif->status))
257 iwl_mvm_csa_noa_start(mvm);
259 IWL_DEBUG_TE(mvm, "CSA NOA failed to start\n");
261 /* we don't need it anymore */
262 iwl_mvm_te_clear_data(mvm, te_data);
265 IWL_WARN(mvm, "Got TE with unknown action\n");
270 * Handle A Aux ROC time event
272 static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm,
273 struct iwl_time_event_notif *notif)
275 struct iwl_mvm_time_event_data *te_data, *tmp;
276 bool aux_roc_te = false;
278 list_for_each_entry_safe(te_data, tmp, &mvm->aux_roc_te_list, list) {
279 if (le32_to_cpu(notif->unique_id) == te_data->uid) {
284 if (!aux_roc_te) /* Not a Aux ROC time event */
287 if (!le32_to_cpu(notif->status)) {
289 "ERROR: Aux ROC Time Event %s notification failure\n",
290 (le32_to_cpu(notif->action) &
291 TE_V2_NOTIF_HOST_EVENT_START) ? "start" : "end");
296 "Aux ROC time event notification - UID = 0x%x action %d\n",
297 le32_to_cpu(notif->unique_id),
298 le32_to_cpu(notif->action));
300 if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_END) {
301 /* End TE, notify mac80211 */
302 ieee80211_remain_on_channel_expired(mvm->hw);
303 iwl_mvm_roc_finished(mvm); /* flush aux queue */
304 list_del(&te_data->list); /* remove from list */
305 te_data->running = false;
308 te_data->id = TE_MAX;
309 } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) {
310 set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status);
311 te_data->running = true;
312 ieee80211_ready_on_channel(mvm->hw); /* Start TE */
315 "ERROR: Unknown Aux ROC Time Event (action = %d)\n",
316 le32_to_cpu(notif->action));
324 * The Rx handler for time event notifications
326 int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm,
327 struct iwl_rx_cmd_buffer *rxb,
328 struct iwl_device_cmd *cmd)
330 struct iwl_rx_packet *pkt = rxb_addr(rxb);
331 struct iwl_time_event_notif *notif = (void *)pkt->data;
332 struct iwl_mvm_time_event_data *te_data, *tmp;
334 IWL_DEBUG_TE(mvm, "Time event notification - UID = 0x%x action %d\n",
335 le32_to_cpu(notif->unique_id),
336 le32_to_cpu(notif->action));
338 spin_lock_bh(&mvm->time_event_lock);
339 /* This time event is triggered for Aux ROC request */
340 if (!iwl_mvm_aux_roc_te_handle_notif(mvm, notif))
343 list_for_each_entry_safe(te_data, tmp, &mvm->time_event_list, list) {
344 if (le32_to_cpu(notif->unique_id) == te_data->uid)
345 iwl_mvm_te_handle_notif(mvm, te_data, notif);
348 spin_unlock_bh(&mvm->time_event_lock);
353 static bool iwl_mvm_te_notif(struct iwl_notif_wait_data *notif_wait,
354 struct iwl_rx_packet *pkt, void *data)
356 struct iwl_mvm *mvm =
357 container_of(notif_wait, struct iwl_mvm, notif_wait);
358 struct iwl_mvm_time_event_data *te_data = data;
359 struct iwl_time_event_notif *resp;
360 int resp_len = iwl_rx_packet_payload_len(pkt);
362 if (WARN_ON(pkt->hdr.cmd != TIME_EVENT_NOTIFICATION))
365 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
366 IWL_ERR(mvm, "Invalid TIME_EVENT_NOTIFICATION response\n");
370 resp = (void *)pkt->data;
372 /* te_data->uid is already set in the TIME_EVENT_CMD response */
373 if (le32_to_cpu(resp->unique_id) != te_data->uid)
376 IWL_DEBUG_TE(mvm, "TIME_EVENT_NOTIFICATION response - UID = 0x%x\n",
380 "TIME_EVENT_NOTIFICATION received but not executed\n");
385 static bool iwl_mvm_time_event_response(struct iwl_notif_wait_data *notif_wait,
386 struct iwl_rx_packet *pkt, void *data)
388 struct iwl_mvm *mvm =
389 container_of(notif_wait, struct iwl_mvm, notif_wait);
390 struct iwl_mvm_time_event_data *te_data = data;
391 struct iwl_time_event_resp *resp;
392 int resp_len = iwl_rx_packet_payload_len(pkt);
394 if (WARN_ON(pkt->hdr.cmd != TIME_EVENT_CMD))
397 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
398 IWL_ERR(mvm, "Invalid TIME_EVENT_CMD response\n");
402 resp = (void *)pkt->data;
404 /* we should never get a response to another TIME_EVENT_CMD here */
405 if (WARN_ON_ONCE(le32_to_cpu(resp->id) != te_data->id))
408 te_data->uid = le32_to_cpu(resp->unique_id);
409 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
414 static int iwl_mvm_time_event_send_add(struct iwl_mvm *mvm,
415 struct ieee80211_vif *vif,
416 struct iwl_mvm_time_event_data *te_data,
417 struct iwl_time_event_cmd *te_cmd)
419 static const u8 time_event_response[] = { TIME_EVENT_CMD };
420 struct iwl_notification_wait wait_time_event;
423 lockdep_assert_held(&mvm->mutex);
425 IWL_DEBUG_TE(mvm, "Add new TE, duration %d TU\n",
426 le32_to_cpu(te_cmd->duration));
428 spin_lock_bh(&mvm->time_event_lock);
429 if (WARN_ON(te_data->id != TE_MAX)) {
430 spin_unlock_bh(&mvm->time_event_lock);
434 te_data->duration = le32_to_cpu(te_cmd->duration);
435 te_data->id = le32_to_cpu(te_cmd->id);
436 list_add_tail(&te_data->list, &mvm->time_event_list);
437 spin_unlock_bh(&mvm->time_event_lock);
440 * Use a notification wait, which really just processes the
441 * command response and doesn't wait for anything, in order
442 * to be able to process the response and get the UID inside
443 * the RX path. Using CMD_WANT_SKB doesn't work because it
444 * stores the buffer and then wakes up this thread, by which
445 * time another notification (that the time event started)
446 * might already be processed unsuccessfully.
448 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
450 ARRAY_SIZE(time_event_response),
451 iwl_mvm_time_event_response, te_data);
453 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, 0,
454 sizeof(*te_cmd), te_cmd);
456 IWL_ERR(mvm, "Couldn't send TIME_EVENT_CMD: %d\n", ret);
457 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
461 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
462 ret = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
463 /* should never fail */
468 spin_lock_bh(&mvm->time_event_lock);
469 iwl_mvm_te_clear_data(mvm, te_data);
470 spin_unlock_bh(&mvm->time_event_lock);
475 void iwl_mvm_protect_session(struct iwl_mvm *mvm,
476 struct ieee80211_vif *vif,
477 u32 duration, u32 min_duration,
478 u32 max_delay, bool wait_for_notif)
480 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
481 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
482 const u8 te_notif_response[] = { TIME_EVENT_NOTIFICATION };
483 struct iwl_notification_wait wait_te_notif;
484 struct iwl_time_event_cmd time_cmd = {};
486 lockdep_assert_held(&mvm->mutex);
488 if (te_data->running &&
489 time_after(te_data->end_jiffies, TU_TO_EXP_TIME(min_duration))) {
490 IWL_DEBUG_TE(mvm, "We have enough time in the current TE: %u\n",
491 jiffies_to_msecs(te_data->end_jiffies - jiffies));
495 if (te_data->running) {
496 IWL_DEBUG_TE(mvm, "extend 0x%x: only %u ms left\n",
498 jiffies_to_msecs(te_data->end_jiffies - jiffies));
500 * we don't have enough time
501 * cancel the current TE and issue a new one
502 * Of course it would be better to remove the old one only
503 * when the new one is added, but we don't care if we are off
504 * channel for a bit. All we need to do, is not to return
505 * before we actually begin to be on the channel.
507 iwl_mvm_stop_session_protection(mvm, vif);
510 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
511 time_cmd.id_and_color =
512 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
513 time_cmd.id = cpu_to_le32(TE_BSS_STA_AGGRESSIVE_ASSOC);
515 time_cmd.apply_time =
516 cpu_to_le32(iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG));
518 time_cmd.max_frags = TE_V2_FRAG_NONE;
519 time_cmd.max_delay = cpu_to_le32(max_delay);
520 /* TODO: why do we need to interval = bi if it is not periodic? */
521 time_cmd.interval = cpu_to_le32(1);
522 time_cmd.duration = cpu_to_le32(duration);
524 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
525 TE_V2_NOTIF_HOST_EVENT_END |
526 T2_V2_START_IMMEDIATELY);
528 if (!wait_for_notif) {
529 iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
534 * Create notification_wait for the TIME_EVENT_NOTIFICATION to use
535 * right after we send the time event
537 iwl_init_notification_wait(&mvm->notif_wait, &wait_te_notif,
539 ARRAY_SIZE(te_notif_response),
540 iwl_mvm_te_notif, te_data);
542 /* If TE was sent OK - wait for the notification that started */
543 if (iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd)) {
544 IWL_ERR(mvm, "Failed to add TE to protect session\n");
545 iwl_remove_notification(&mvm->notif_wait, &wait_te_notif);
546 } else if (iwl_wait_notification(&mvm->notif_wait, &wait_te_notif,
547 TU_TO_JIFFIES(max_delay))) {
548 IWL_ERR(mvm, "Failed to protect session until TE\n");
553 * Explicit request to remove a time event. The removal of a time event needs to
554 * be synchronized with the flow of a time event's end notification, which also
555 * removes the time event from the op mode data structures.
557 void iwl_mvm_remove_time_event(struct iwl_mvm *mvm,
558 struct iwl_mvm_vif *mvmvif,
559 struct iwl_mvm_time_event_data *te_data)
561 struct iwl_time_event_cmd time_cmd = {};
566 * It is possible that by the time we got to this point the time
567 * event was already removed.
569 spin_lock_bh(&mvm->time_event_lock);
571 /* Save time event uid before clearing its data */
576 * The clear_data function handles time events that were already removed
578 iwl_mvm_te_clear_data(mvm, te_data);
579 spin_unlock_bh(&mvm->time_event_lock);
582 * It is possible that by the time we try to remove it, the time event
583 * has already ended and removed. In such a case there is no need to
584 * send a removal command.
587 IWL_DEBUG_TE(mvm, "TE 0x%x has already ended\n", uid);
591 /* When we remove a TE, the UID is to be set in the id field */
592 time_cmd.id = cpu_to_le32(uid);
593 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
594 time_cmd.id_and_color =
595 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
597 IWL_DEBUG_TE(mvm, "Removing TE 0x%x\n", le32_to_cpu(time_cmd.id));
598 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, 0,
599 sizeof(time_cmd), &time_cmd);
604 void iwl_mvm_stop_session_protection(struct iwl_mvm *mvm,
605 struct ieee80211_vif *vif)
607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
608 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
610 lockdep_assert_held(&mvm->mutex);
611 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
614 int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
615 int duration, enum ieee80211_roc_type type)
617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
618 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
619 struct iwl_time_event_cmd time_cmd = {};
621 lockdep_assert_held(&mvm->mutex);
622 if (te_data->running) {
623 IWL_WARN(mvm, "P2P_DEVICE remain on channel already running\n");
628 * Flush the done work, just in case it's still pending, so that
629 * the work it does can complete and we can accept new frames.
631 flush_work(&mvm->roc_done_wk);
633 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
634 time_cmd.id_and_color =
635 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
638 case IEEE80211_ROC_TYPE_NORMAL:
639 time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_NORMAL);
641 case IEEE80211_ROC_TYPE_MGMT_TX:
642 time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_MGMT_TX);
645 WARN_ONCE(1, "Got an invalid ROC type\n");
649 time_cmd.apply_time = cpu_to_le32(0);
650 time_cmd.interval = cpu_to_le32(1);
653 * The P2P Device TEs can have lower priority than other events
654 * that are being scheduled by the driver/fw, and thus it might not be
655 * scheduled. To improve the chances of it being scheduled, allow them
656 * to be fragmented, and in addition allow them to be delayed.
658 time_cmd.max_frags = min(MSEC_TO_TU(duration)/50, TE_V2_FRAG_ENDLESS);
659 time_cmd.max_delay = cpu_to_le32(MSEC_TO_TU(duration/2));
660 time_cmd.duration = cpu_to_le32(MSEC_TO_TU(duration));
662 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
663 TE_V2_NOTIF_HOST_EVENT_END |
664 T2_V2_START_IMMEDIATELY);
666 return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
669 void iwl_mvm_stop_p2p_roc(struct iwl_mvm *mvm)
671 struct iwl_mvm_vif *mvmvif;
672 struct iwl_mvm_time_event_data *te_data;
674 lockdep_assert_held(&mvm->mutex);
677 * Iterate over the list of time events and find the time event that is
678 * associated with a P2P_DEVICE interface.
679 * This assumes that a P2P_DEVICE interface can have only a single time
680 * event at any given time and this time event coresponds to a ROC
684 spin_lock_bh(&mvm->time_event_lock);
685 list_for_each_entry(te_data, &mvm->time_event_list, list) {
686 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
687 mvmvif = iwl_mvm_vif_from_mac80211(te_data->vif);
691 spin_unlock_bh(&mvm->time_event_lock);
694 IWL_WARN(mvm, "P2P_DEVICE no remain on channel event\n");
698 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
700 iwl_mvm_roc_finished(mvm);
703 int iwl_mvm_schedule_csa_period(struct iwl_mvm *mvm,
704 struct ieee80211_vif *vif,
705 u32 duration, u32 apply_time)
707 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
708 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
709 struct iwl_time_event_cmd time_cmd = {};
711 lockdep_assert_held(&mvm->mutex);
713 if (te_data->running) {
714 IWL_DEBUG_TE(mvm, "CS period is already scheduled\n");
718 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
719 time_cmd.id_and_color =
720 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
721 time_cmd.id = cpu_to_le32(TE_CHANNEL_SWITCH_PERIOD);
722 time_cmd.apply_time = cpu_to_le32(apply_time);
723 time_cmd.max_frags = TE_V2_FRAG_NONE;
724 time_cmd.duration = cpu_to_le32(duration);
726 time_cmd.interval = cpu_to_le32(1);
727 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
730 return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);