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Merge tag 'v3.10.71' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
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.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <linux/kernel.h>
64 #include <linux/slab.h>
65 #include <linux/skbuff.h>
66 #include <linux/netdevice.h>
67 #include <linux/etherdevice.h>
68 #include <linux/ip.h>
69 #include <net/mac80211.h>
70 #include <net/tcp.h>
71
72 #include "iwl-op-mode.h"
73 #include "iwl-io.h"
74 #include "mvm.h"
75 #include "sta.h"
76 #include "time-event.h"
77 #include "iwl-eeprom-parse.h"
78 #include "fw-api-scan.h"
79 #include "iwl-phy-db.h"
80
81 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
82 {
83 .max = 1,
84 .types = BIT(NL80211_IFTYPE_STATION) |
85 BIT(NL80211_IFTYPE_AP),
86 },
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
90 BIT(NL80211_IFTYPE_P2P_GO),
91 },
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
95 },
96 };
97
98 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
99 {
100 .num_different_channels = 1,
101 .max_interfaces = 3,
102 .limits = iwl_mvm_limits,
103 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
104 },
105 };
106
107 #ifdef CONFIG_PM_SLEEP
108 static const struct nl80211_wowlan_tcp_data_token_feature
109 iwl_mvm_wowlan_tcp_token_feature = {
110 .min_len = 0,
111 .max_len = 255,
112 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
113 };
114
115 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
116 .tok = &iwl_mvm_wowlan_tcp_token_feature,
117 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
118 sizeof(struct ethhdr) -
119 sizeof(struct iphdr) -
120 sizeof(struct tcphdr),
121 .data_interval_max = 65535, /* __le16 in API */
122 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .seq = true,
127 };
128 #endif
129
130 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
131 {
132 struct ieee80211_hw *hw = mvm->hw;
133 int num_mac, ret, i;
134
135 /* Tell mac80211 our characteristics */
136 hw->flags = IEEE80211_HW_SIGNAL_DBM |
137 IEEE80211_HW_SPECTRUM_MGMT |
138 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
139 IEEE80211_HW_QUEUE_CONTROL |
140 IEEE80211_HW_WANT_MONITOR_VIF |
141 IEEE80211_HW_SUPPORTS_PS |
142 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
143 IEEE80211_HW_AMPDU_AGGREGATION |
144 IEEE80211_HW_TIMING_BEACON_ONLY;
145
146 hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
147 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
148 hw->rate_control_algorithm = "iwl-mvm-rs";
149
150 /*
151 * Enable 11w if advertised by firmware and software crypto
152 * is not enabled (as the firmware will interpret some mgmt
153 * packets, so enabling it with software crypto isn't safe)
154 */
155 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
156 !iwlwifi_mod_params.sw_crypto)
157 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
158
159 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
160 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
161 hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
162
163 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
164 BIT(NL80211_IFTYPE_P2P_CLIENT) |
165 BIT(NL80211_IFTYPE_AP) |
166 BIT(NL80211_IFTYPE_P2P_GO) |
167 BIT(NL80211_IFTYPE_P2P_DEVICE);
168
169 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
170 WIPHY_FLAG_DISABLE_BEACON_HINTS |
171 WIPHY_FLAG_IBSS_RSN;
172
173 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
174 hw->wiphy->n_iface_combinations =
175 ARRAY_SIZE(iwl_mvm_iface_combinations);
176
177 hw->wiphy->max_remain_on_channel_duration = 10000;
178 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
179
180 /* Extract MAC address */
181 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
182 hw->wiphy->addresses = mvm->addresses;
183 hw->wiphy->n_addresses = 1;
184
185 /* Extract additional MAC addresses if available */
186 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
187 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
188
189 for (i = 1; i < num_mac; i++) {
190 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
191 ETH_ALEN);
192 mvm->addresses[i].addr[5]++;
193 hw->wiphy->n_addresses++;
194 }
195
196 /* we create the 802.11 header and a max-length SSID element */
197 hw->wiphy->max_scan_ie_len =
198 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
199 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
200
201 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
202 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
203 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
204 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
205 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
206 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
207
208 hw->wiphy->hw_version = mvm->trans->hw_id;
209
210 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
211 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
212 else
213 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
214
215 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
216 NL80211_FEATURE_P2P_GO_OPPPS;
217
218 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
219
220 #ifdef CONFIG_PM_SLEEP
221 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
222 mvm->trans->ops->d3_suspend &&
223 mvm->trans->ops->d3_resume &&
224 device_can_wakeup(mvm->trans->dev)) {
225 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
226 WIPHY_WOWLAN_DISCONNECT |
227 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
228 WIPHY_WOWLAN_RFKILL_RELEASE;
229 if (!iwlwifi_mod_params.sw_crypto)
230 hw->wiphy->wowlan.flags |=
231 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
232 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
233 WIPHY_WOWLAN_4WAY_HANDSHAKE;
234
235 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
236 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
237 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
238 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
239 }
240 #endif
241
242 ret = iwl_mvm_leds_init(mvm);
243 if (ret)
244 return ret;
245
246 ret = ieee80211_register_hw(mvm->hw);
247 if (ret)
248 iwl_mvm_leds_exit(mvm);
249
250 return ret;
251 }
252
253 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
254 struct ieee80211_tx_control *control,
255 struct sk_buff *skb)
256 {
257 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
258
259 if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
260 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
261 goto drop;
262 }
263
264 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
265 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
266 goto drop;
267
268 if (control->sta) {
269 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
270 goto drop;
271 return;
272 }
273
274 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
275 goto drop;
276 return;
277 drop:
278 ieee80211_free_txskb(hw, skb);
279 }
280
281 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
282 {
283 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
284 return false;
285 return true;
286 }
287
288 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
289 {
290 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
291 return false;
292 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
293 return true;
294
295 /* enabled by default */
296 return true;
297 }
298
299 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
300 struct ieee80211_vif *vif,
301 enum ieee80211_ampdu_mlme_action action,
302 struct ieee80211_sta *sta, u16 tid,
303 u16 *ssn, u8 buf_size)
304 {
305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
306 int ret;
307
308 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
309 sta->addr, tid, action);
310
311 if (!(mvm->nvm_data->sku_cap_11n_enable))
312 return -EACCES;
313
314 mutex_lock(&mvm->mutex);
315
316 switch (action) {
317 case IEEE80211_AMPDU_RX_START:
318 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
319 ret = -EINVAL;
320 break;
321 }
322 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
323 break;
324 case IEEE80211_AMPDU_RX_STOP:
325 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
326 break;
327 case IEEE80211_AMPDU_TX_START:
328 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
329 ret = -EINVAL;
330 break;
331 }
332 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
333 break;
334 case IEEE80211_AMPDU_TX_STOP_CONT:
335 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
336 break;
337 case IEEE80211_AMPDU_TX_STOP_FLUSH:
338 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
339 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
340 break;
341 case IEEE80211_AMPDU_TX_OPERATIONAL:
342 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
343 break;
344 default:
345 WARN_ON_ONCE(1);
346 ret = -EINVAL;
347 break;
348 }
349 mutex_unlock(&mvm->mutex);
350
351 return ret;
352 }
353
354 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
355 struct ieee80211_vif *vif)
356 {
357 struct iwl_mvm *mvm = data;
358 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
359
360 mvmvif->uploaded = false;
361 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
362
363 spin_lock_bh(&mvm->time_event_lock);
364 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
365 spin_unlock_bh(&mvm->time_event_lock);
366
367 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
368 mvmvif->phy_ctxt = NULL;
369 }
370
371 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
372 {
373 iwl_trans_stop_device(mvm->trans);
374 iwl_trans_stop_hw(mvm->trans, false);
375
376 mvm->scan_status = IWL_MVM_SCAN_NONE;
377
378 /* just in case one was running */
379 ieee80211_remain_on_channel_expired(mvm->hw);
380
381 ieee80211_iterate_active_interfaces_atomic(
382 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
383 iwl_mvm_cleanup_iterator, mvm);
384
385 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
386 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
387
388 ieee80211_wake_queues(mvm->hw);
389
390 mvm->vif_count = 0;
391 }
392
393 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
394 {
395 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
396 int ret;
397
398 mutex_lock(&mvm->mutex);
399
400 /* Clean up some internal and mac80211 state on restart */
401 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
402 iwl_mvm_restart_cleanup(mvm);
403
404 ret = iwl_mvm_up(mvm);
405 mutex_unlock(&mvm->mutex);
406
407 return ret;
408 }
409
410 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
411 {
412 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
413 int ret;
414
415 mutex_lock(&mvm->mutex);
416
417 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
418 ret = iwl_mvm_update_quotas(mvm, NULL);
419 if (ret)
420 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
421 ret);
422
423 mutex_unlock(&mvm->mutex);
424 }
425
426 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
427 {
428 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
429
430 flush_work(&mvm->async_handlers_wk);
431
432 mutex_lock(&mvm->mutex);
433 /* async_handlers_wk is now blocked */
434
435 /*
436 * The work item could be running or queued if the
437 * ROC time event stops just as we get here.
438 */
439 cancel_work_sync(&mvm->roc_done_wk);
440
441 iwl_trans_stop_device(mvm->trans);
442 iwl_trans_stop_hw(mvm->trans, false);
443
444 iwl_mvm_async_handlers_purge(mvm);
445 /* async_handlers_list is empty and will stay empty: HW is stopped */
446
447 /* the fw is stopped, the aux sta is dead: clean up driver state */
448 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
449
450 mutex_unlock(&mvm->mutex);
451
452 /*
453 * The worker might have been waiting for the mutex, let it run and
454 * discover that its list is now empty.
455 */
456 cancel_work_sync(&mvm->async_handlers_wk);
457 }
458
459 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
460 struct ieee80211_vif *vif)
461 {
462 struct iwl_mvm *mvm = data;
463 int ret;
464
465 ret = iwl_mvm_power_disable(mvm, vif);
466 if (ret)
467 IWL_ERR(mvm, "failed to disable power management\n");
468 }
469
470 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
471 struct ieee80211_vif *vif)
472 {
473 struct iwl_mvm *mvm = data;
474
475 iwl_mvm_power_update_mode(mvm, vif);
476 }
477
478 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
479 struct ieee80211_vif *vif)
480 {
481 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
482 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
483 int ret;
484
485 /*
486 * Not much to do here. The stack will not allow interface
487 * types or combinations that we didn't advertise, so we
488 * don't really have to check the types.
489 */
490
491 mutex_lock(&mvm->mutex);
492
493 /* Allocate resources for the MAC context, and add it the the fw */
494 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
495 if (ret)
496 goto out_unlock;
497
498 /*
499 * The AP binding flow can be done only after the beacon
500 * template is configured (which happens only in the mac80211
501 * start_ap() flow), and adding the broadcast station can happen
502 * only after the binding.
503 * In addition, since modifying the MAC before adding a bcast
504 * station is not allowed by the FW, delay the adding of MAC context to
505 * the point where we can also add the bcast station.
506 * In short: there's not much we can do at this point, other than
507 * allocating resources :)
508 */
509 if (vif->type == NL80211_IFTYPE_AP) {
510 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
511 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
512 qmask);
513 if (ret) {
514 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
515 goto out_release;
516 }
517
518 goto out_unlock;
519 }
520
521 /*
522 * TODO: remove this temporary code.
523 * Currently MVM FW supports power management only on single MAC.
524 * If new interface added, disable PM on existing interface.
525 * P2P device is a special case, since it is handled by FW similary to
526 * scan. If P2P deviced is added, PM remains enabled on existing
527 * interface.
528 * Note: the method below does not count the new interface being added
529 * at this moment.
530 */
531 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
532 mvm->vif_count++;
533 if (mvm->vif_count > 1) {
534 IWL_DEBUG_MAC80211(mvm,
535 "Disable power on existing interfaces\n");
536 ieee80211_iterate_active_interfaces_atomic(
537 mvm->hw,
538 IEEE80211_IFACE_ITER_NORMAL,
539 iwl_mvm_pm_disable_iterator, mvm);
540 }
541
542 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
543 if (ret)
544 goto out_remove_mac;
545
546 /*
547 * Update power state on the new interface. Admittedly, based on
548 * mac80211 logics this power update will disable power management
549 */
550 iwl_mvm_power_update_mode(mvm, vif);
551
552 /*
553 * P2P_DEVICE interface does not have a channel context assigned to it,
554 * so a dedicated PHY context is allocated to it and the corresponding
555 * MAC context is bound to it at this stage.
556 */
557 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
558 struct ieee80211_channel *chan;
559 struct cfg80211_chan_def chandef;
560
561 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
562
563 /*
564 * The channel used here isn't relevant as it's
565 * going to be overwritten as part of the ROC flow.
566 * For now use the first channel we have.
567 */
568 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
569 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
570 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
571 &chandef, 1, 1);
572 if (ret)
573 goto out_remove_mac;
574
575 ret = iwl_mvm_binding_add_vif(mvm, vif);
576 if (ret)
577 goto out_remove_phy;
578
579 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
580 if (ret)
581 goto out_unbind;
582
583 /* Save a pointer to p2p device vif, so it can later be used to
584 * update the p2p device MAC when a GO is started/stopped */
585 mvm->p2p_device_vif = vif;
586 }
587
588 iwl_mvm_vif_dbgfs_register(mvm, vif);
589 goto out_unlock;
590
591 out_unbind:
592 iwl_mvm_binding_remove_vif(mvm, vif);
593 out_remove_phy:
594 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
595 out_remove_mac:
596 mvmvif->phy_ctxt = NULL;
597 iwl_mvm_mac_ctxt_remove(mvm, vif);
598 out_release:
599 /*
600 * TODO: remove this temporary code.
601 * Currently MVM FW supports power management only on single MAC.
602 * Check if only one additional interface remains after releasing
603 * current one. Update power mode on the remaining interface.
604 */
605 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
606 mvm->vif_count--;
607 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
608 mvm->vif_count);
609 if (mvm->vif_count == 1) {
610 ieee80211_iterate_active_interfaces(
611 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
612 iwl_mvm_power_update_iterator, mvm);
613 }
614 iwl_mvm_mac_ctxt_release(mvm, vif);
615 out_unlock:
616 mutex_unlock(&mvm->mutex);
617
618 return ret;
619 }
620
621 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
622 struct ieee80211_vif *vif)
623 {
624 u32 tfd_msk = 0, ac;
625
626 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
627 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
628 tfd_msk |= BIT(vif->hw_queue[ac]);
629
630 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
631 tfd_msk |= BIT(vif->cab_queue);
632
633 if (tfd_msk) {
634 mutex_lock(&mvm->mutex);
635 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
636 mutex_unlock(&mvm->mutex);
637 }
638
639 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
640 /*
641 * Flush the ROC worker which will flush the OFFCHANNEL queue.
642 * We assume here that all the packets sent to the OFFCHANNEL
643 * queue are sent in ROC session.
644 */
645 flush_work(&mvm->roc_done_wk);
646 } else {
647 /*
648 * By now, all the AC queues are empty. The AGG queues are
649 * empty too. We already got all the Tx responses for all the
650 * packets in the queues. The drain work can have been
651 * triggered. Flush it. This work item takes the mutex, so kill
652 * it before we take it.
653 */
654 flush_work(&mvm->sta_drained_wk);
655 }
656 }
657
658 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
659 struct ieee80211_vif *vif)
660 {
661 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
663
664 iwl_mvm_prepare_mac_removal(mvm, vif);
665
666 mutex_lock(&mvm->mutex);
667
668 iwl_mvm_vif_dbgfs_clean(mvm, vif);
669
670 /*
671 * For AP/GO interface, the tear down of the resources allocated to the
672 * interface is be handled as part of the stop_ap flow.
673 */
674 if (vif->type == NL80211_IFTYPE_AP) {
675 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
676 goto out_release;
677 }
678
679 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
680 mvm->p2p_device_vif = NULL;
681 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
682 iwl_mvm_binding_remove_vif(mvm, vif);
683 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
684 mvmvif->phy_ctxt = NULL;
685 }
686
687 /*
688 * TODO: remove this temporary code.
689 * Currently MVM FW supports power management only on single MAC.
690 * Check if only one additional interface remains after removing
691 * current one. Update power mode on the remaining interface.
692 */
693 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
694 mvm->vif_count--;
695 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
696 mvm->vif_count);
697 if (mvm->vif_count == 1) {
698 ieee80211_iterate_active_interfaces(
699 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
700 iwl_mvm_power_update_iterator, mvm);
701 }
702
703 iwl_mvm_mac_ctxt_remove(mvm, vif);
704
705 out_release:
706 iwl_mvm_mac_ctxt_release(mvm, vif);
707 mutex_unlock(&mvm->mutex);
708 }
709
710 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
711 {
712 return 0;
713 }
714
715 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
716 unsigned int changed_flags,
717 unsigned int *total_flags,
718 u64 multicast)
719 {
720 *total_flags = 0;
721 }
722
723 static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
724 struct ieee80211_vif *vif)
725 {
726 struct iwl_mcast_filter_cmd mcast_filter_cmd = {
727 .pass_all = 1,
728 };
729
730 memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
731
732 return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
733 sizeof(mcast_filter_cmd),
734 &mcast_filter_cmd);
735 }
736
737 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
738 struct ieee80211_vif *vif,
739 struct ieee80211_bss_conf *bss_conf,
740 u32 changes)
741 {
742 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
743 int ret;
744
745 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
746 if (ret)
747 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
748
749 if (changes & BSS_CHANGED_ASSOC) {
750 if (bss_conf->assoc) {
751 /* add quota for this interface */
752 ret = iwl_mvm_update_quotas(mvm, vif);
753 if (ret) {
754 IWL_ERR(mvm, "failed to update quotas\n");
755 return;
756 }
757 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
758 iwl_mvm_configure_mcast_filter(mvm, vif);
759 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
760 /* remove AP station now that the MAC is unassoc */
761 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
762 if (ret)
763 IWL_ERR(mvm, "failed to remove AP station\n");
764 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
765 /* remove quota for this interface */
766 ret = iwl_mvm_update_quotas(mvm, NULL);
767 if (ret)
768 IWL_ERR(mvm, "failed to update quotas\n");
769 }
770 } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
771 /*
772 * We received a beacon _after_ association so
773 * remove the session protection.
774 */
775 iwl_mvm_remove_time_event(mvm, mvmvif,
776 &mvmvif->time_event_data);
777 } else if (changes & BSS_CHANGED_PS) {
778 /*
779 * TODO: remove this temporary code.
780 * Currently MVM FW supports power management only on single
781 * MAC. Avoid power mode update if more than one interface
782 * is active.
783 */
784 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
785 mvm->vif_count);
786 if (mvm->vif_count == 1) {
787 ret = iwl_mvm_power_update_mode(mvm, vif);
788 if (ret)
789 IWL_ERR(mvm, "failed to update power mode\n");
790 }
791 }
792 }
793
794 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
795 {
796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
797 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
798 int ret;
799
800 mutex_lock(&mvm->mutex);
801
802 /* Send the beacon template */
803 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
804 if (ret)
805 goto out_unlock;
806
807 /* Add the mac context */
808 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
809 if (ret)
810 goto out_unlock;
811
812 /* Perform the binding */
813 ret = iwl_mvm_binding_add_vif(mvm, vif);
814 if (ret)
815 goto out_remove;
816
817 mvmvif->ap_active = true;
818
819 /* Send the bcast station. At this stage the TBTT and DTIM time events
820 * are added and applied to the scheduler */
821 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
822 if (ret)
823 goto out_unbind;
824
825 ret = iwl_mvm_update_quotas(mvm, vif);
826 if (ret)
827 goto out_rm_bcast;
828
829 /* Need to update the P2P Device MAC */
830 if (vif->p2p && mvm->p2p_device_vif)
831 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
832
833 mutex_unlock(&mvm->mutex);
834 return 0;
835
836 out_rm_bcast:
837 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
838 out_unbind:
839 iwl_mvm_binding_remove_vif(mvm, vif);
840 out_remove:
841 iwl_mvm_mac_ctxt_remove(mvm, vif);
842 out_unlock:
843 mutex_unlock(&mvm->mutex);
844 return ret;
845 }
846
847 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
848 {
849 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
850 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
851
852 iwl_mvm_prepare_mac_removal(mvm, vif);
853
854 mutex_lock(&mvm->mutex);
855
856 mvmvif->ap_active = false;
857
858 /* Need to update the P2P Device MAC */
859 if (vif->p2p && mvm->p2p_device_vif)
860 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
861
862 iwl_mvm_update_quotas(mvm, NULL);
863 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
864 iwl_mvm_binding_remove_vif(mvm, vif);
865 iwl_mvm_mac_ctxt_remove(mvm, vif);
866
867 mutex_unlock(&mvm->mutex);
868 }
869
870 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
871 struct ieee80211_vif *vif,
872 struct ieee80211_bss_conf *bss_conf,
873 u32 changes)
874 {
875 /* Need to send a new beacon template to the FW */
876 if (changes & BSS_CHANGED_BEACON) {
877 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
878 IWL_WARN(mvm, "Failed updating beacon data\n");
879 }
880 }
881
882 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
883 struct ieee80211_vif *vif,
884 struct ieee80211_bss_conf *bss_conf,
885 u32 changes)
886 {
887 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
888
889 mutex_lock(&mvm->mutex);
890
891 switch (vif->type) {
892 case NL80211_IFTYPE_STATION:
893 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
894 break;
895 case NL80211_IFTYPE_AP:
896 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
897 break;
898 default:
899 /* shouldn't happen */
900 WARN_ON_ONCE(1);
901 }
902
903 mutex_unlock(&mvm->mutex);
904 }
905
906 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
907 struct ieee80211_vif *vif,
908 struct cfg80211_scan_request *req)
909 {
910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
911 int ret;
912
913 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
914 return -EINVAL;
915
916 mutex_lock(&mvm->mutex);
917
918 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
919 ret = iwl_mvm_scan_request(mvm, vif, req);
920 else
921 ret = -EBUSY;
922
923 mutex_unlock(&mvm->mutex);
924
925 return ret;
926 }
927
928 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
929 struct ieee80211_vif *vif)
930 {
931 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
932
933 mutex_lock(&mvm->mutex);
934
935 iwl_mvm_cancel_scan(mvm);
936
937 mutex_unlock(&mvm->mutex);
938 }
939
940 static void
941 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
942 struct ieee80211_sta *sta, u16 tid,
943 int num_frames,
944 enum ieee80211_frame_release_type reason,
945 bool more_data)
946 {
947 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
948
949 /* TODO: how do we tell the fw to send frames for a specific TID */
950
951 /*
952 * The fw will send EOSP notification when the last frame will be
953 * transmitted.
954 */
955 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
956 }
957
958 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
959 struct ieee80211_vif *vif,
960 enum sta_notify_cmd cmd,
961 struct ieee80211_sta *sta)
962 {
963 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
964 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
965
966 switch (cmd) {
967 case STA_NOTIFY_SLEEP:
968 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
969 ieee80211_sta_block_awake(hw, sta, true);
970 /*
971 * The fw updates the STA to be asleep. Tx packets on the Tx
972 * queues to this station will not be transmitted. The fw will
973 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
974 */
975 break;
976 case STA_NOTIFY_AWAKE:
977 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
978 break;
979 iwl_mvm_sta_modify_ps_wake(mvm, sta);
980 break;
981 default:
982 break;
983 }
984 }
985
986 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
987 struct ieee80211_vif *vif,
988 struct ieee80211_sta *sta,
989 enum ieee80211_sta_state old_state,
990 enum ieee80211_sta_state new_state)
991 {
992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
993 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
994 int ret;
995
996 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
997 sta->addr, old_state, new_state);
998
999 /* this would be a mac80211 bug ... but don't crash */
1000 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1001 return -EINVAL;
1002
1003 /* if a STA is being removed, reuse its ID */
1004 flush_work(&mvm->sta_drained_wk);
1005
1006 mutex_lock(&mvm->mutex);
1007 if (old_state == IEEE80211_STA_NOTEXIST &&
1008 new_state == IEEE80211_STA_NONE) {
1009 /*
1010 * Firmware bug - it'll crash if the beacon interval is less
1011 * than 16. We can't avoid connecting at all, so refuse the
1012 * station state change, this will cause mac80211 to abandon
1013 * attempts to connect to this AP, and eventually wpa_s will
1014 * blacklist the AP...
1015 */
1016 if (vif->type == NL80211_IFTYPE_STATION &&
1017 vif->bss_conf.beacon_int < 16) {
1018 IWL_ERR(mvm,
1019 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1020 sta->addr, vif->bss_conf.beacon_int);
1021 ret = -EINVAL;
1022 goto out_unlock;
1023 }
1024 ret = iwl_mvm_add_sta(mvm, vif, sta);
1025 } else if (old_state == IEEE80211_STA_NONE &&
1026 new_state == IEEE80211_STA_AUTH) {
1027 ret = 0;
1028 } else if (old_state == IEEE80211_STA_AUTH &&
1029 new_state == IEEE80211_STA_ASSOC) {
1030 ret = iwl_mvm_update_sta(mvm, vif, sta);
1031 if (ret == 0)
1032 iwl_mvm_rs_rate_init(mvm, sta,
1033 mvmvif->phy_ctxt->channel->band);
1034 } else if (old_state == IEEE80211_STA_ASSOC &&
1035 new_state == IEEE80211_STA_AUTHORIZED) {
1036 ret = 0;
1037 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1038 new_state == IEEE80211_STA_ASSOC) {
1039 ret = 0;
1040 } else if (old_state == IEEE80211_STA_ASSOC &&
1041 new_state == IEEE80211_STA_AUTH) {
1042 ret = 0;
1043 } else if (old_state == IEEE80211_STA_AUTH &&
1044 new_state == IEEE80211_STA_NONE) {
1045 ret = 0;
1046 } else if (old_state == IEEE80211_STA_NONE &&
1047 new_state == IEEE80211_STA_NOTEXIST) {
1048 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1049 } else {
1050 ret = -EIO;
1051 }
1052 out_unlock:
1053 mutex_unlock(&mvm->mutex);
1054
1055 return ret;
1056 }
1057
1058 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1059 {
1060 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1061
1062 mvm->rts_threshold = value;
1063
1064 return 0;
1065 }
1066
1067 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1068 struct ieee80211_vif *vif, u16 ac,
1069 const struct ieee80211_tx_queue_params *params)
1070 {
1071 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1072 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1073
1074 mvmvif->queue_params[ac] = *params;
1075
1076 /*
1077 * No need to update right away, we'll get BSS_CHANGED_QOS
1078 * The exception is P2P_DEVICE interface which needs immediate update.
1079 */
1080 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1081 int ret;
1082
1083 mutex_lock(&mvm->mutex);
1084 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1085 mutex_unlock(&mvm->mutex);
1086 return ret;
1087 }
1088 return 0;
1089 }
1090
1091 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1092 struct ieee80211_vif *vif)
1093 {
1094 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1095 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1096 200 + vif->bss_conf.beacon_int);
1097 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1098 100 + vif->bss_conf.beacon_int);
1099
1100 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1101 return;
1102
1103 mutex_lock(&mvm->mutex);
1104 /* Try really hard to protect the session and hear a beacon */
1105 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1106 mutex_unlock(&mvm->mutex);
1107 }
1108
1109 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1110 enum set_key_cmd cmd,
1111 struct ieee80211_vif *vif,
1112 struct ieee80211_sta *sta,
1113 struct ieee80211_key_conf *key)
1114 {
1115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116 int ret;
1117
1118 if (iwlwifi_mod_params.sw_crypto) {
1119 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1120 return -EOPNOTSUPP;
1121 }
1122
1123 switch (key->cipher) {
1124 case WLAN_CIPHER_SUITE_TKIP:
1125 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1126 /* fall-through */
1127 case WLAN_CIPHER_SUITE_CCMP:
1128 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1129 break;
1130 case WLAN_CIPHER_SUITE_AES_CMAC:
1131 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1132 break;
1133 case WLAN_CIPHER_SUITE_WEP40:
1134 case WLAN_CIPHER_SUITE_WEP104:
1135 /*
1136 * Support for TX only, at least for now, so accept
1137 * the key and do nothing else. Then mac80211 will
1138 * pass it for TX but we don't have to use it for RX.
1139 */
1140 return 0;
1141 default:
1142 return -EOPNOTSUPP;
1143 }
1144
1145 mutex_lock(&mvm->mutex);
1146
1147 switch (cmd) {
1148 case SET_KEY:
1149 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1150 /* GTK on AP interface is a TX-only key, return 0 */
1151 ret = 0;
1152 key->hw_key_idx = STA_KEY_IDX_INVALID;
1153 break;
1154 }
1155
1156 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1157 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1158 if (ret) {
1159 IWL_WARN(mvm, "set key failed\n");
1160 /*
1161 * can't add key for RX, but we don't need it
1162 * in the device for TX so still return 0
1163 */
1164 key->hw_key_idx = STA_KEY_IDX_INVALID;
1165 ret = 0;
1166 }
1167
1168 break;
1169 case DISABLE_KEY:
1170 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1171 ret = 0;
1172 break;
1173 }
1174
1175 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1176 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1177 break;
1178 default:
1179 ret = -EINVAL;
1180 }
1181
1182 mutex_unlock(&mvm->mutex);
1183 return ret;
1184 }
1185
1186 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1187 struct ieee80211_vif *vif,
1188 struct ieee80211_key_conf *keyconf,
1189 struct ieee80211_sta *sta,
1190 u32 iv32, u16 *phase1key)
1191 {
1192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193
1194 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1195 }
1196
1197
1198 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1199 struct ieee80211_vif *vif,
1200 struct ieee80211_channel *channel,
1201 int duration,
1202 enum ieee80211_roc_type type)
1203 {
1204 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1205 struct cfg80211_chan_def chandef;
1206 int ret;
1207
1208 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1209 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1210 return -EINVAL;
1211 }
1212
1213 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1214 duration, type);
1215
1216 mutex_lock(&mvm->mutex);
1217
1218 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1219 ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1220 &chandef, 1, 1);
1221
1222 /* Schedule the time events */
1223 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1224
1225 mutex_unlock(&mvm->mutex);
1226 IWL_DEBUG_MAC80211(mvm, "leave\n");
1227
1228 return ret;
1229 }
1230
1231 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1232 {
1233 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1234
1235 IWL_DEBUG_MAC80211(mvm, "enter\n");
1236
1237 mutex_lock(&mvm->mutex);
1238 iwl_mvm_stop_p2p_roc(mvm);
1239 mutex_unlock(&mvm->mutex);
1240
1241 IWL_DEBUG_MAC80211(mvm, "leave\n");
1242 return 0;
1243 }
1244
1245 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1246 struct ieee80211_chanctx_conf *ctx)
1247 {
1248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1249 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1250 int ret;
1251
1252 mutex_lock(&mvm->mutex);
1253
1254 IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1255 ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1256 ctx->rx_chains_static,
1257 ctx->rx_chains_dynamic);
1258 mutex_unlock(&mvm->mutex);
1259 return ret;
1260 }
1261
1262 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1263 struct ieee80211_chanctx_conf *ctx)
1264 {
1265 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1266 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1267
1268 mutex_lock(&mvm->mutex);
1269 iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1270 mutex_unlock(&mvm->mutex);
1271 }
1272
1273 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1274 struct ieee80211_chanctx_conf *ctx,
1275 u32 changed)
1276 {
1277 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1278 struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1279
1280 mutex_lock(&mvm->mutex);
1281 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1282 ctx->rx_chains_static,
1283 ctx->rx_chains_dynamic);
1284 mutex_unlock(&mvm->mutex);
1285 }
1286
1287 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1288 struct ieee80211_vif *vif,
1289 struct ieee80211_chanctx_conf *ctx)
1290 {
1291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1292 struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1294 int ret;
1295
1296 mutex_lock(&mvm->mutex);
1297
1298 mvmvif->phy_ctxt = phyctx;
1299
1300 switch (vif->type) {
1301 case NL80211_IFTYPE_AP:
1302 /*
1303 * The AP binding flow is handled as part of the start_ap flow
1304 * (in bss_info_changed).
1305 */
1306 ret = 0;
1307 goto out_unlock;
1308 case NL80211_IFTYPE_STATION:
1309 case NL80211_IFTYPE_ADHOC:
1310 case NL80211_IFTYPE_MONITOR:
1311 break;
1312 default:
1313 ret = -EINVAL;
1314 goto out_unlock;
1315 }
1316
1317 ret = iwl_mvm_binding_add_vif(mvm, vif);
1318 if (ret)
1319 goto out_unlock;
1320
1321 /*
1322 * Setting the quota at this stage is only required for monitor
1323 * interfaces. For the other types, the bss_info changed flow
1324 * will handle quota settings.
1325 */
1326 if (vif->type == NL80211_IFTYPE_MONITOR) {
1327 mvmvif->monitor_active = true;
1328 ret = iwl_mvm_update_quotas(mvm, vif);
1329 if (ret)
1330 goto out_remove_binding;
1331 }
1332
1333 goto out_unlock;
1334
1335 out_remove_binding:
1336 iwl_mvm_binding_remove_vif(mvm, vif);
1337 out_unlock:
1338 mutex_unlock(&mvm->mutex);
1339 if (ret)
1340 mvmvif->phy_ctxt = NULL;
1341 return ret;
1342 }
1343
1344 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1345 struct ieee80211_vif *vif,
1346 struct ieee80211_chanctx_conf *ctx)
1347 {
1348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1349 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1350
1351 mutex_lock(&mvm->mutex);
1352
1353 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1354
1355 if (vif->type == NL80211_IFTYPE_AP)
1356 goto out_unlock;
1357
1358 switch (vif->type) {
1359 case NL80211_IFTYPE_MONITOR:
1360 mvmvif->monitor_active = false;
1361 iwl_mvm_update_quotas(mvm, NULL);
1362 break;
1363 default:
1364 break;
1365 }
1366
1367 iwl_mvm_binding_remove_vif(mvm, vif);
1368 out_unlock:
1369 mvmvif->phy_ctxt = NULL;
1370 mutex_unlock(&mvm->mutex);
1371 }
1372
1373 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1374 struct ieee80211_sta *sta,
1375 bool set)
1376 {
1377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1378 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1379
1380 if (!mvm_sta || !mvm_sta->vif) {
1381 IWL_ERR(mvm, "Station is not associated to a vif\n");
1382 return -EINVAL;
1383 }
1384
1385 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1386 }
1387
1388 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1389 struct ieee80211_vif *vif,
1390 enum ieee80211_rssi_event rssi_event)
1391 {
1392 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1393
1394 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1395 }
1396
1397 struct ieee80211_ops iwl_mvm_hw_ops = {
1398 .tx = iwl_mvm_mac_tx,
1399 .ampdu_action = iwl_mvm_mac_ampdu_action,
1400 .start = iwl_mvm_mac_start,
1401 .restart_complete = iwl_mvm_mac_restart_complete,
1402 .stop = iwl_mvm_mac_stop,
1403 .add_interface = iwl_mvm_mac_add_interface,
1404 .remove_interface = iwl_mvm_mac_remove_interface,
1405 .config = iwl_mvm_mac_config,
1406 .configure_filter = iwl_mvm_configure_filter,
1407 .bss_info_changed = iwl_mvm_bss_info_changed,
1408 .hw_scan = iwl_mvm_mac_hw_scan,
1409 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1410 .sta_state = iwl_mvm_mac_sta_state,
1411 .sta_notify = iwl_mvm_mac_sta_notify,
1412 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1413 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1414 .conf_tx = iwl_mvm_mac_conf_tx,
1415 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1416 .set_key = iwl_mvm_mac_set_key,
1417 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1418 .remain_on_channel = iwl_mvm_roc,
1419 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1420 .rssi_callback = iwl_mvm_mac_rssi_callback,
1421
1422 .add_chanctx = iwl_mvm_add_chanctx,
1423 .remove_chanctx = iwl_mvm_remove_chanctx,
1424 .change_chanctx = iwl_mvm_change_chanctx,
1425 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1426 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1427
1428 .start_ap = iwl_mvm_start_ap,
1429 .stop_ap = iwl_mvm_stop_ap,
1430
1431 .set_tim = iwl_mvm_set_tim,
1432
1433 #ifdef CONFIG_PM_SLEEP
1434 /* look at d3.c */
1435 .suspend = iwl_mvm_suspend,
1436 .resume = iwl_mvm_resume,
1437 .set_wakeup = iwl_mvm_set_wakeup,
1438 .set_rekey_data = iwl_mvm_set_rekey_data,
1439 #if IS_ENABLED(CONFIG_IPV6)
1440 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1441 #endif
1442 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1443 #endif
1444 };
kernel source for telekom puls (alcatel/mediatek)