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Merge tag 'regulator-v3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.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 },
86 {
87 .max = 1,
88 .types = BIT(NL80211_IFTYPE_AP) |
89 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 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
131 {
132 int i;
133
134 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
135 for (i = 0; i < NUM_PHY_CTX; i++) {
136 mvm->phy_ctxts[i].id = i;
137 mvm->phy_ctxts[i].ref = 0;
138 }
139 }
140
141 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
142 {
143 struct ieee80211_hw *hw = mvm->hw;
144 int num_mac, ret, i;
145
146 /* Tell mac80211 our characteristics */
147 hw->flags = IEEE80211_HW_SIGNAL_DBM |
148 IEEE80211_HW_SPECTRUM_MGMT |
149 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
150 IEEE80211_HW_QUEUE_CONTROL |
151 IEEE80211_HW_WANT_MONITOR_VIF |
152 IEEE80211_HW_SUPPORTS_PS |
153 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
154 IEEE80211_HW_AMPDU_AGGREGATION |
155 IEEE80211_HW_TIMING_BEACON_ONLY |
156 IEEE80211_HW_CONNECTION_MONITOR;
157
158 hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
159 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
160 hw->rate_control_algorithm = "iwl-mvm-rs";
161
162 /*
163 * Enable 11w if advertised by firmware and software crypto
164 * is not enabled (as the firmware will interpret some mgmt
165 * packets, so enabling it with software crypto isn't safe)
166 */
167 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
168 !iwlwifi_mod_params.sw_crypto)
169 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
170
171 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
172 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
173 hw->chanctx_data_size = sizeof(u16);
174
175 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
176 BIT(NL80211_IFTYPE_P2P_CLIENT) |
177 BIT(NL80211_IFTYPE_AP) |
178 BIT(NL80211_IFTYPE_P2P_GO) |
179 BIT(NL80211_IFTYPE_P2P_DEVICE);
180
181 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
182 WIPHY_FLAG_DISABLE_BEACON_HINTS |
183 WIPHY_FLAG_IBSS_RSN;
184
185 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
186 hw->wiphy->n_iface_combinations =
187 ARRAY_SIZE(iwl_mvm_iface_combinations);
188
189 hw->wiphy->max_remain_on_channel_duration = 10000;
190 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
191
192 /* Extract MAC address */
193 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
194 hw->wiphy->addresses = mvm->addresses;
195 hw->wiphy->n_addresses = 1;
196
197 /* Extract additional MAC addresses if available */
198 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
199 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
200
201 for (i = 1; i < num_mac; i++) {
202 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
203 ETH_ALEN);
204 mvm->addresses[i].addr[5]++;
205 hw->wiphy->n_addresses++;
206 }
207
208 iwl_mvm_reset_phy_ctxts(mvm);
209
210 /* we create the 802.11 header and a max-length SSID element */
211 hw->wiphy->max_scan_ie_len =
212 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
213 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
214
215 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
216 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
217 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
218 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
219 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
220 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
221
222 hw->wiphy->hw_version = mvm->trans->hw_id;
223
224 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
225 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
226 else
227 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
228
229 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
230 NL80211_FEATURE_P2P_GO_OPPPS;
231
232 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
233
234 #ifdef CONFIG_PM_SLEEP
235 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
236 mvm->trans->ops->d3_suspend &&
237 mvm->trans->ops->d3_resume &&
238 device_can_wakeup(mvm->trans->dev)) {
239 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
240 WIPHY_WOWLAN_DISCONNECT |
241 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
242 WIPHY_WOWLAN_RFKILL_RELEASE;
243 if (!iwlwifi_mod_params.sw_crypto)
244 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
245 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
246 WIPHY_WOWLAN_4WAY_HANDSHAKE;
247
248 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
249 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
250 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
251 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
252 hw->wiphy->wowlan = &mvm->wowlan;
253 }
254 #endif
255
256 ret = iwl_mvm_leds_init(mvm);
257 if (ret)
258 return ret;
259
260 ret = ieee80211_register_hw(mvm->hw);
261 if (ret)
262 iwl_mvm_leds_exit(mvm);
263
264 return ret;
265 }
266
267 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
268 struct ieee80211_tx_control *control,
269 struct sk_buff *skb)
270 {
271 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
272
273 if (iwl_mvm_is_radio_killed(mvm)) {
274 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
275 goto drop;
276 }
277
278 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
279 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
280 goto drop;
281
282 if (control->sta) {
283 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
284 goto drop;
285 return;
286 }
287
288 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
289 goto drop;
290 return;
291 drop:
292 ieee80211_free_txskb(hw, skb);
293 }
294
295 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
296 struct ieee80211_vif *vif,
297 enum ieee80211_ampdu_mlme_action action,
298 struct ieee80211_sta *sta, u16 tid,
299 u16 *ssn, u8 buf_size)
300 {
301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
302 int ret;
303
304 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
305 sta->addr, tid, action);
306
307 if (!(mvm->nvm_data->sku_cap_11n_enable))
308 return -EACCES;
309
310 mutex_lock(&mvm->mutex);
311
312 switch (action) {
313 case IEEE80211_AMPDU_RX_START:
314 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
315 ret = -EINVAL;
316 break;
317 }
318 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
319 break;
320 case IEEE80211_AMPDU_RX_STOP:
321 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
322 break;
323 case IEEE80211_AMPDU_TX_START:
324 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
325 ret = -EINVAL;
326 break;
327 }
328 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
329 break;
330 case IEEE80211_AMPDU_TX_STOP_CONT:
331 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
332 break;
333 case IEEE80211_AMPDU_TX_STOP_FLUSH:
334 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
335 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
336 break;
337 case IEEE80211_AMPDU_TX_OPERATIONAL:
338 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
339 break;
340 default:
341 WARN_ON_ONCE(1);
342 ret = -EINVAL;
343 break;
344 }
345 mutex_unlock(&mvm->mutex);
346
347 return ret;
348 }
349
350 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
351 struct ieee80211_vif *vif)
352 {
353 struct iwl_mvm *mvm = data;
354 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
355
356 mvmvif->uploaded = false;
357 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
358
359 /* does this make sense at all? */
360 mvmvif->color++;
361
362 spin_lock_bh(&mvm->time_event_lock);
363 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
364 spin_unlock_bh(&mvm->time_event_lock);
365
366 mvmvif->phy_ctxt = NULL;
367 }
368
369 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
370 {
371 iwl_trans_stop_device(mvm->trans);
372 iwl_trans_stop_hw(mvm->trans, false);
373
374 mvm->scan_status = IWL_MVM_SCAN_NONE;
375
376 /* just in case one was running */
377 ieee80211_remain_on_channel_expired(mvm->hw);
378
379 ieee80211_iterate_active_interfaces_atomic(
380 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
381 iwl_mvm_cleanup_iterator, mvm);
382
383 mvm->p2p_device_vif = NULL;
384
385 iwl_mvm_reset_phy_ctxts(mvm);
386 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
387 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
388
389 ieee80211_wake_queues(mvm->hw);
390
391 mvm->vif_count = 0;
392 mvm->rx_ba_sessions = 0;
393 }
394
395 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
396 {
397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
398 int ret;
399
400 mutex_lock(&mvm->mutex);
401
402 /* Clean up some internal and mac80211 state on restart */
403 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
404 iwl_mvm_restart_cleanup(mvm);
405
406 ret = iwl_mvm_up(mvm);
407 mutex_unlock(&mvm->mutex);
408
409 return ret;
410 }
411
412 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
413 {
414 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
415 int ret;
416
417 mutex_lock(&mvm->mutex);
418
419 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
420 ret = iwl_mvm_update_quotas(mvm, NULL);
421 if (ret)
422 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
423 ret);
424
425 mutex_unlock(&mvm->mutex);
426 }
427
428 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
429 {
430 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
431
432 flush_work(&mvm->async_handlers_wk);
433
434 mutex_lock(&mvm->mutex);
435 /* async_handlers_wk is now blocked */
436
437 /*
438 * The work item could be running or queued if the
439 * ROC time event stops just as we get here.
440 */
441 cancel_work_sync(&mvm->roc_done_wk);
442
443 iwl_trans_stop_device(mvm->trans);
444 iwl_trans_stop_hw(mvm->trans, false);
445
446 iwl_mvm_async_handlers_purge(mvm);
447 /* async_handlers_list is empty and will stay empty: HW is stopped */
448
449 /* the fw is stopped, the aux sta is dead: clean up driver state */
450 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
451
452 mutex_unlock(&mvm->mutex);
453
454 /*
455 * The worker might have been waiting for the mutex, let it run and
456 * discover that its list is now empty.
457 */
458 cancel_work_sync(&mvm->async_handlers_wk);
459 }
460
461 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
462 struct ieee80211_vif *vif)
463 {
464 struct iwl_mvm *mvm = data;
465 int ret;
466
467 ret = iwl_mvm_power_disable(mvm, vif);
468 if (ret)
469 IWL_ERR(mvm, "failed to disable power management\n");
470 }
471
472 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
473 struct ieee80211_vif *vif)
474 {
475 struct iwl_mvm *mvm = data;
476
477 iwl_mvm_power_update_mode(mvm, vif);
478 }
479
480 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
481 {
482 u16 i;
483
484 lockdep_assert_held(&mvm->mutex);
485
486 for (i = 0; i < NUM_PHY_CTX; i++)
487 if (!mvm->phy_ctxts[i].ref)
488 return &mvm->phy_ctxts[i];
489
490 IWL_ERR(mvm, "No available PHY context\n");
491 return NULL;
492 }
493
494 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
495 struct ieee80211_vif *vif)
496 {
497 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
498 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
499 int ret;
500
501 /*
502 * Not much to do here. The stack will not allow interface
503 * types or combinations that we didn't advertise, so we
504 * don't really have to check the types.
505 */
506
507 mutex_lock(&mvm->mutex);
508
509 /* Allocate resources for the MAC context, and add it the the fw */
510 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
511 if (ret)
512 goto out_unlock;
513
514 /*
515 * TODO: remove this temporary code.
516 * Currently MVM FW supports power management only on single MAC.
517 * If new interface added, disable PM on existing interface.
518 * P2P device is a special case, since it is handled by FW similary to
519 * scan. If P2P deviced is added, PM remains enabled on existing
520 * interface.
521 * Note: the method below does not count the new interface being added
522 * at this moment.
523 */
524 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
525 mvm->vif_count++;
526 if (mvm->vif_count > 1) {
527 IWL_DEBUG_MAC80211(mvm,
528 "Disable power on existing interfaces\n");
529 ieee80211_iterate_active_interfaces_atomic(
530 mvm->hw,
531 IEEE80211_IFACE_ITER_NORMAL,
532 iwl_mvm_pm_disable_iterator, mvm);
533 }
534
535 /*
536 * The AP binding flow can be done only after the beacon
537 * template is configured (which happens only in the mac80211
538 * start_ap() flow), and adding the broadcast station can happen
539 * only after the binding.
540 * In addition, since modifying the MAC before adding a bcast
541 * station is not allowed by the FW, delay the adding of MAC context to
542 * the point where we can also add the bcast station.
543 * In short: there's not much we can do at this point, other than
544 * allocating resources :)
545 */
546 if (vif->type == NL80211_IFTYPE_AP) {
547 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
548 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
549 qmask);
550 if (ret) {
551 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
552 goto out_release;
553 }
554
555 goto out_unlock;
556 }
557
558 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
559 if (ret)
560 goto out_release;
561
562 /*
563 * Update power state on the new interface. Admittedly, based on
564 * mac80211 logics this power update will disable power management
565 */
566 iwl_mvm_power_update_mode(mvm, vif);
567
568 /* beacon filtering */
569 if (!mvm->bf_allowed_vif &&
570 vif->type == NL80211_IFTYPE_STATION && !vif->p2p){
571 mvm->bf_allowed_vif = mvmvif;
572 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
573 }
574
575 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
576 if (ret)
577 goto out_release;
578
579 /*
580 * P2P_DEVICE interface does not have a channel context assigned to it,
581 * so a dedicated PHY context is allocated to it and the corresponding
582 * MAC context is bound to it at this stage.
583 */
584 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
585
586 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
587 if (!mvmvif->phy_ctxt) {
588 ret = -ENOSPC;
589 goto out_remove_mac;
590 }
591
592 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
593 ret = iwl_mvm_binding_add_vif(mvm, vif);
594 if (ret)
595 goto out_unref_phy;
596
597 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
598 if (ret)
599 goto out_unbind;
600
601 /* Save a pointer to p2p device vif, so it can later be used to
602 * update the p2p device MAC when a GO is started/stopped */
603 mvm->p2p_device_vif = vif;
604 }
605
606 iwl_mvm_vif_dbgfs_register(mvm, vif);
607 goto out_unlock;
608
609 out_unbind:
610 iwl_mvm_binding_remove_vif(mvm, vif);
611 out_unref_phy:
612 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
613 out_remove_mac:
614 mvmvif->phy_ctxt = NULL;
615 iwl_mvm_mac_ctxt_remove(mvm, vif);
616 out_release:
617 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
618 mvm->vif_count--;
619 ieee80211_iterate_active_interfaces(
620 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
621 iwl_mvm_power_update_iterator, mvm);
622 iwl_mvm_mac_ctxt_release(mvm, vif);
623 out_unlock:
624 mutex_unlock(&mvm->mutex);
625
626 return ret;
627 }
628
629 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
630 struct ieee80211_vif *vif)
631 {
632 u32 tfd_msk = 0, ac;
633
634 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
635 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
636 tfd_msk |= BIT(vif->hw_queue[ac]);
637
638 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
639 tfd_msk |= BIT(vif->cab_queue);
640
641 if (tfd_msk) {
642 mutex_lock(&mvm->mutex);
643 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
644 mutex_unlock(&mvm->mutex);
645 }
646
647 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
648 /*
649 * Flush the ROC worker which will flush the OFFCHANNEL queue.
650 * We assume here that all the packets sent to the OFFCHANNEL
651 * queue are sent in ROC session.
652 */
653 flush_work(&mvm->roc_done_wk);
654 } else {
655 /*
656 * By now, all the AC queues are empty. The AGG queues are
657 * empty too. We already got all the Tx responses for all the
658 * packets in the queues. The drain work can have been
659 * triggered. Flush it.
660 */
661 flush_work(&mvm->sta_drained_wk);
662 }
663 }
664
665 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
666 struct ieee80211_vif *vif)
667 {
668 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
669 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
670
671 iwl_mvm_prepare_mac_removal(mvm, vif);
672
673 mutex_lock(&mvm->mutex);
674
675 if (mvm->bf_allowed_vif == mvmvif) {
676 mvm->bf_allowed_vif = NULL;
677 vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
678 }
679
680 iwl_mvm_vif_dbgfs_clean(mvm, vif);
681
682 /*
683 * For AP/GO interface, the tear down of the resources allocated to the
684 * interface is be handled as part of the stop_ap flow.
685 */
686 if (vif->type == NL80211_IFTYPE_AP) {
687 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
688 goto out_release;
689 }
690
691 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
692 mvm->p2p_device_vif = NULL;
693 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
694 iwl_mvm_binding_remove_vif(mvm, vif);
695 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
696 mvmvif->phy_ctxt = NULL;
697 }
698
699 /*
700 * TODO: remove this temporary code.
701 * Currently MVM FW supports power management only on single MAC.
702 * Check if only one additional interface remains after removing
703 * current one. Update power mode on the remaining interface.
704 */
705 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
706 mvm->vif_count--;
707 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
708 mvm->vif_count);
709 if (mvm->vif_count == 1) {
710 ieee80211_iterate_active_interfaces(
711 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
712 iwl_mvm_power_update_iterator, mvm);
713 }
714
715 iwl_mvm_mac_ctxt_remove(mvm, vif);
716
717 out_release:
718 iwl_mvm_mac_ctxt_release(mvm, vif);
719 mutex_unlock(&mvm->mutex);
720 }
721
722 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
723 {
724 return 0;
725 }
726
727 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
728 unsigned int changed_flags,
729 unsigned int *total_flags,
730 u64 multicast)
731 {
732 *total_flags = 0;
733 }
734
735 static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
736 struct ieee80211_vif *vif)
737 {
738 struct iwl_mcast_filter_cmd mcast_filter_cmd = {
739 .pass_all = 1,
740 };
741
742 memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
743
744 return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
745 sizeof(mcast_filter_cmd),
746 &mcast_filter_cmd);
747 }
748
749 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
750 struct ieee80211_vif *vif,
751 struct ieee80211_bss_conf *bss_conf,
752 u32 changes)
753 {
754 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
755 int ret;
756
757 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
758 if (ret)
759 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
760
761 if (changes & BSS_CHANGED_ASSOC) {
762 if (bss_conf->assoc) {
763 /* add quota for this interface */
764 ret = iwl_mvm_update_quotas(mvm, vif);
765 if (ret) {
766 IWL_ERR(mvm, "failed to update quotas\n");
767 return;
768 }
769 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
770 iwl_mvm_configure_mcast_filter(mvm, vif);
771 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
772 /* remove AP station now that the MAC is unassoc */
773 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
774 if (ret)
775 IWL_ERR(mvm, "failed to remove AP station\n");
776 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
777 /* remove quota for this interface */
778 ret = iwl_mvm_update_quotas(mvm, NULL);
779 if (ret)
780 IWL_ERR(mvm, "failed to update quotas\n");
781 }
782 ret = iwl_mvm_power_update_mode(mvm, vif);
783 if (ret)
784 IWL_ERR(mvm, "failed to update power mode\n");
785 } else if (changes & BSS_CHANGED_BEACON_INFO) {
786 /*
787 * We received a beacon _after_ association so
788 * remove the session protection.
789 */
790 iwl_mvm_remove_time_event(mvm, mvmvif,
791 &mvmvif->time_event_data);
792 } else if (changes & BSS_CHANGED_PS) {
793 ret = iwl_mvm_power_update_mode(mvm, vif);
794 if (ret)
795 IWL_ERR(mvm, "failed to update power mode\n");
796 }
797 }
798
799 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
800 {
801 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
802 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
803 int ret;
804
805 mutex_lock(&mvm->mutex);
806
807 /* Send the beacon template */
808 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
809 if (ret)
810 goto out_unlock;
811
812 /* Add the mac context */
813 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
814 if (ret)
815 goto out_unlock;
816
817 /* Perform the binding */
818 ret = iwl_mvm_binding_add_vif(mvm, vif);
819 if (ret)
820 goto out_remove;
821
822 mvmvif->ap_active = true;
823
824 /* Send the bcast station. At this stage the TBTT and DTIM time events
825 * are added and applied to the scheduler */
826 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
827 if (ret)
828 goto out_unbind;
829
830 ret = iwl_mvm_update_quotas(mvm, vif);
831 if (ret)
832 goto out_rm_bcast;
833
834 /* Need to update the P2P Device MAC */
835 if (vif->p2p && mvm->p2p_device_vif)
836 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
837
838 mutex_unlock(&mvm->mutex);
839 return 0;
840
841 out_rm_bcast:
842 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
843 out_unbind:
844 iwl_mvm_binding_remove_vif(mvm, vif);
845 out_remove:
846 iwl_mvm_mac_ctxt_remove(mvm, vif);
847 out_unlock:
848 mutex_unlock(&mvm->mutex);
849 return ret;
850 }
851
852 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
853 {
854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
855 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
856
857 iwl_mvm_prepare_mac_removal(mvm, vif);
858
859 mutex_lock(&mvm->mutex);
860
861 mvmvif->ap_active = false;
862
863 /* Need to update the P2P Device MAC */
864 if (vif->p2p && mvm->p2p_device_vif)
865 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
866
867 iwl_mvm_update_quotas(mvm, NULL);
868 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
869 iwl_mvm_binding_remove_vif(mvm, vif);
870 iwl_mvm_mac_ctxt_remove(mvm, vif);
871
872 mutex_unlock(&mvm->mutex);
873 }
874
875 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
876 struct ieee80211_vif *vif,
877 struct ieee80211_bss_conf *bss_conf,
878 u32 changes)
879 {
880 /* Need to send a new beacon template to the FW */
881 if (changes & BSS_CHANGED_BEACON) {
882 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
883 IWL_WARN(mvm, "Failed updating beacon data\n");
884 }
885 }
886
887 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
888 struct ieee80211_vif *vif,
889 struct ieee80211_bss_conf *bss_conf,
890 u32 changes)
891 {
892 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
893
894 mutex_lock(&mvm->mutex);
895
896 switch (vif->type) {
897 case NL80211_IFTYPE_STATION:
898 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
899 break;
900 case NL80211_IFTYPE_AP:
901 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
902 break;
903 default:
904 /* shouldn't happen */
905 WARN_ON_ONCE(1);
906 }
907
908 mutex_unlock(&mvm->mutex);
909 }
910
911 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
912 struct ieee80211_vif *vif,
913 struct cfg80211_scan_request *req)
914 {
915 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
916 int ret;
917
918 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
919 return -EINVAL;
920
921 mutex_lock(&mvm->mutex);
922
923 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
924 ret = iwl_mvm_scan_request(mvm, vif, req);
925 else
926 ret = -EBUSY;
927
928 mutex_unlock(&mvm->mutex);
929
930 return ret;
931 }
932
933 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
934 struct ieee80211_vif *vif)
935 {
936 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
937
938 mutex_lock(&mvm->mutex);
939
940 iwl_mvm_cancel_scan(mvm);
941
942 mutex_unlock(&mvm->mutex);
943 }
944
945 static void
946 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
947 struct ieee80211_sta *sta, u16 tid,
948 int num_frames,
949 enum ieee80211_frame_release_type reason,
950 bool more_data)
951 {
952 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
953
954 /* TODO: how do we tell the fw to send frames for a specific TID */
955
956 /*
957 * The fw will send EOSP notification when the last frame will be
958 * transmitted.
959 */
960 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
961 }
962
963 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
964 struct ieee80211_vif *vif,
965 enum sta_notify_cmd cmd,
966 struct ieee80211_sta *sta)
967 {
968 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
969 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
970
971 switch (cmd) {
972 case STA_NOTIFY_SLEEP:
973 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
974 ieee80211_sta_block_awake(hw, sta, true);
975 /*
976 * The fw updates the STA to be asleep. Tx packets on the Tx
977 * queues to this station will not be transmitted. The fw will
978 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
979 */
980 break;
981 case STA_NOTIFY_AWAKE:
982 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
983 break;
984 iwl_mvm_sta_modify_ps_wake(mvm, sta);
985 break;
986 default:
987 break;
988 }
989 }
990
991 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
992 struct ieee80211_vif *vif,
993 struct ieee80211_sta *sta,
994 enum ieee80211_sta_state old_state,
995 enum ieee80211_sta_state new_state)
996 {
997 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
998 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
999 int ret;
1000
1001 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1002 sta->addr, old_state, new_state);
1003
1004 /* this would be a mac80211 bug ... but don't crash */
1005 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1006 return -EINVAL;
1007
1008 /* if a STA is being removed, reuse its ID */
1009 flush_work(&mvm->sta_drained_wk);
1010
1011 mutex_lock(&mvm->mutex);
1012 if (old_state == IEEE80211_STA_NOTEXIST &&
1013 new_state == IEEE80211_STA_NONE) {
1014 /*
1015 * Firmware bug - it'll crash if the beacon interval is less
1016 * than 16. We can't avoid connecting at all, so refuse the
1017 * station state change, this will cause mac80211 to abandon
1018 * attempts to connect to this AP, and eventually wpa_s will
1019 * blacklist the AP...
1020 */
1021 if (vif->type == NL80211_IFTYPE_STATION &&
1022 vif->bss_conf.beacon_int < 16) {
1023 IWL_ERR(mvm,
1024 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1025 sta->addr, vif->bss_conf.beacon_int);
1026 ret = -EINVAL;
1027 goto out_unlock;
1028 }
1029 ret = iwl_mvm_add_sta(mvm, vif, sta);
1030 } else if (old_state == IEEE80211_STA_NONE &&
1031 new_state == IEEE80211_STA_AUTH) {
1032 ret = 0;
1033 } else if (old_state == IEEE80211_STA_AUTH &&
1034 new_state == IEEE80211_STA_ASSOC) {
1035 ret = iwl_mvm_update_sta(mvm, vif, sta);
1036 if (ret == 0)
1037 iwl_mvm_rs_rate_init(mvm, sta,
1038 mvmvif->phy_ctxt->channel->band);
1039 } else if (old_state == IEEE80211_STA_ASSOC &&
1040 new_state == IEEE80211_STA_AUTHORIZED) {
1041 /* enable beacon filtering */
1042 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1043 ret = 0;
1044 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1045 new_state == IEEE80211_STA_ASSOC) {
1046 /* disable beacon filtering */
1047 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1048 ret = 0;
1049 } else if (old_state == IEEE80211_STA_ASSOC &&
1050 new_state == IEEE80211_STA_AUTH) {
1051 ret = 0;
1052 } else if (old_state == IEEE80211_STA_AUTH &&
1053 new_state == IEEE80211_STA_NONE) {
1054 ret = 0;
1055 } else if (old_state == IEEE80211_STA_NONE &&
1056 new_state == IEEE80211_STA_NOTEXIST) {
1057 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1058 } else {
1059 ret = -EIO;
1060 }
1061 out_unlock:
1062 mutex_unlock(&mvm->mutex);
1063
1064 return ret;
1065 }
1066
1067 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1068 {
1069 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1070
1071 mvm->rts_threshold = value;
1072
1073 return 0;
1074 }
1075
1076 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1077 struct ieee80211_vif *vif, u16 ac,
1078 const struct ieee80211_tx_queue_params *params)
1079 {
1080 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1081 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1082
1083 mvmvif->queue_params[ac] = *params;
1084
1085 /*
1086 * No need to update right away, we'll get BSS_CHANGED_QOS
1087 * The exception is P2P_DEVICE interface which needs immediate update.
1088 */
1089 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1090 int ret;
1091
1092 mutex_lock(&mvm->mutex);
1093 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1094 mutex_unlock(&mvm->mutex);
1095 return ret;
1096 }
1097 return 0;
1098 }
1099
1100 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1101 struct ieee80211_vif *vif)
1102 {
1103 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1104 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1105 200 + vif->bss_conf.beacon_int);
1106 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1107 100 + vif->bss_conf.beacon_int);
1108
1109 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1110 return;
1111
1112 mutex_lock(&mvm->mutex);
1113 /* Try really hard to protect the session and hear a beacon */
1114 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1115 mutex_unlock(&mvm->mutex);
1116 }
1117
1118 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1119 enum set_key_cmd cmd,
1120 struct ieee80211_vif *vif,
1121 struct ieee80211_sta *sta,
1122 struct ieee80211_key_conf *key)
1123 {
1124 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1125 int ret;
1126
1127 if (iwlwifi_mod_params.sw_crypto) {
1128 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1129 return -EOPNOTSUPP;
1130 }
1131
1132 switch (key->cipher) {
1133 case WLAN_CIPHER_SUITE_TKIP:
1134 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1135 /* fall-through */
1136 case WLAN_CIPHER_SUITE_CCMP:
1137 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1138 break;
1139 case WLAN_CIPHER_SUITE_AES_CMAC:
1140 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1141 break;
1142 case WLAN_CIPHER_SUITE_WEP40:
1143 case WLAN_CIPHER_SUITE_WEP104:
1144 /*
1145 * Support for TX only, at least for now, so accept
1146 * the key and do nothing else. Then mac80211 will
1147 * pass it for TX but we don't have to use it for RX.
1148 */
1149 return 0;
1150 default:
1151 return -EOPNOTSUPP;
1152 }
1153
1154 mutex_lock(&mvm->mutex);
1155
1156 switch (cmd) {
1157 case SET_KEY:
1158 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1159 /* GTK on AP interface is a TX-only key, return 0 */
1160 ret = 0;
1161 key->hw_key_idx = STA_KEY_IDX_INVALID;
1162 break;
1163 }
1164
1165 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1166 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1167 if (ret) {
1168 IWL_WARN(mvm, "set key failed\n");
1169 /*
1170 * can't add key for RX, but we don't need it
1171 * in the device for TX so still return 0
1172 */
1173 key->hw_key_idx = STA_KEY_IDX_INVALID;
1174 ret = 0;
1175 }
1176
1177 break;
1178 case DISABLE_KEY:
1179 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1180 ret = 0;
1181 break;
1182 }
1183
1184 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1185 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1186 break;
1187 default:
1188 ret = -EINVAL;
1189 }
1190
1191 mutex_unlock(&mvm->mutex);
1192 return ret;
1193 }
1194
1195 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1196 struct ieee80211_vif *vif,
1197 struct ieee80211_key_conf *keyconf,
1198 struct ieee80211_sta *sta,
1199 u32 iv32, u16 *phase1key)
1200 {
1201 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1202
1203 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1204 }
1205
1206
1207 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1208 struct ieee80211_vif *vif,
1209 struct ieee80211_channel *channel,
1210 int duration,
1211 enum ieee80211_roc_type type)
1212 {
1213 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1214 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1215 struct cfg80211_chan_def chandef;
1216 struct iwl_mvm_phy_ctxt *phy_ctxt;
1217 int ret, i;
1218
1219 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1220 duration, type);
1221
1222 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1223 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1224 return -EINVAL;
1225 }
1226
1227 mutex_lock(&mvm->mutex);
1228
1229 for (i = 0; i < NUM_PHY_CTX; i++) {
1230 phy_ctxt = &mvm->phy_ctxts[i];
1231 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1232 continue;
1233
1234 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1235 /*
1236 * Unbind the P2P_DEVICE from the current PHY context,
1237 * and if the PHY context is not used remove it.
1238 */
1239 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1240 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1241 goto out_unlock;
1242
1243 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1244
1245 /* Bind the P2P_DEVICE to the current PHY Context */
1246 mvmvif->phy_ctxt = phy_ctxt;
1247
1248 ret = iwl_mvm_binding_add_vif(mvm, vif);
1249 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1250 goto out_unlock;
1251
1252 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1253 goto schedule_time_event;
1254 }
1255 }
1256
1257 /* Need to update the PHY context only if the ROC channel changed */
1258 if (channel == mvmvif->phy_ctxt->channel)
1259 goto schedule_time_event;
1260
1261 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1262
1263 /*
1264 * Change the PHY context configuration as it is currently referenced
1265 * only by the P2P Device MAC
1266 */
1267 if (mvmvif->phy_ctxt->ref == 1) {
1268 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1269 &chandef, 1, 1);
1270 if (ret)
1271 goto out_unlock;
1272 } else {
1273 /*
1274 * The PHY context is shared with other MACs. Need to remove the
1275 * P2P Device from the binding, allocate an new PHY context and
1276 * create a new binding
1277 */
1278 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1279 if (!phy_ctxt) {
1280 ret = -ENOSPC;
1281 goto out_unlock;
1282 }
1283
1284 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1285 1, 1);
1286 if (ret) {
1287 IWL_ERR(mvm, "Failed to change PHY context\n");
1288 goto out_unlock;
1289 }
1290
1291 /* Unbind the P2P_DEVICE from the current PHY context */
1292 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1293 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1294 goto out_unlock;
1295
1296 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1297
1298 /* Bind the P2P_DEVICE to the new allocated PHY context */
1299 mvmvif->phy_ctxt = phy_ctxt;
1300
1301 ret = iwl_mvm_binding_add_vif(mvm, vif);
1302 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1303 goto out_unlock;
1304
1305 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1306 }
1307
1308 schedule_time_event:
1309 /* Schedule the time events */
1310 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1311
1312 out_unlock:
1313 mutex_unlock(&mvm->mutex);
1314 IWL_DEBUG_MAC80211(mvm, "leave\n");
1315 return ret;
1316 }
1317
1318 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1319 {
1320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1321
1322 IWL_DEBUG_MAC80211(mvm, "enter\n");
1323
1324 mutex_lock(&mvm->mutex);
1325 iwl_mvm_stop_p2p_roc(mvm);
1326 mutex_unlock(&mvm->mutex);
1327
1328 IWL_DEBUG_MAC80211(mvm, "leave\n");
1329 return 0;
1330 }
1331
1332 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1333 struct ieee80211_chanctx_conf *ctx)
1334 {
1335 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1336 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1337 struct iwl_mvm_phy_ctxt *phy_ctxt;
1338 int ret;
1339
1340 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1341
1342 mutex_lock(&mvm->mutex);
1343 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1344 if (!phy_ctxt) {
1345 ret = -ENOSPC;
1346 goto out;
1347 }
1348
1349 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1350 ctx->rx_chains_static,
1351 ctx->rx_chains_dynamic);
1352 if (ret) {
1353 IWL_ERR(mvm, "Failed to add PHY context\n");
1354 goto out;
1355 }
1356
1357 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1358 *phy_ctxt_id = phy_ctxt->id;
1359 out:
1360 mutex_unlock(&mvm->mutex);
1361 return ret;
1362 }
1363
1364 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1365 struct ieee80211_chanctx_conf *ctx)
1366 {
1367 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1368 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1369 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1370
1371 mutex_lock(&mvm->mutex);
1372 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1373 mutex_unlock(&mvm->mutex);
1374 }
1375
1376 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1377 struct ieee80211_chanctx_conf *ctx,
1378 u32 changed)
1379 {
1380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1381 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1382 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1383
1384 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1385 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1386 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1387 IEEE80211_CHANCTX_CHANGE_RADAR)),
1388 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1389 phy_ctxt->ref, changed))
1390 return;
1391
1392 mutex_lock(&mvm->mutex);
1393 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1394 ctx->rx_chains_static,
1395 ctx->rx_chains_dynamic);
1396 mutex_unlock(&mvm->mutex);
1397 }
1398
1399 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1400 struct ieee80211_vif *vif,
1401 struct ieee80211_chanctx_conf *ctx)
1402 {
1403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1404 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1405 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1406 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1407 int ret;
1408
1409 mutex_lock(&mvm->mutex);
1410
1411 mvmvif->phy_ctxt = phy_ctxt;
1412
1413 switch (vif->type) {
1414 case NL80211_IFTYPE_AP:
1415 /*
1416 * The AP binding flow is handled as part of the start_ap flow
1417 * (in bss_info_changed).
1418 */
1419 ret = 0;
1420 goto out_unlock;
1421 case NL80211_IFTYPE_STATION:
1422 case NL80211_IFTYPE_ADHOC:
1423 case NL80211_IFTYPE_MONITOR:
1424 break;
1425 default:
1426 ret = -EINVAL;
1427 goto out_unlock;
1428 }
1429
1430 ret = iwl_mvm_binding_add_vif(mvm, vif);
1431 if (ret)
1432 goto out_unlock;
1433
1434 /*
1435 * Setting the quota at this stage is only required for monitor
1436 * interfaces. For the other types, the bss_info changed flow
1437 * will handle quota settings.
1438 */
1439 if (vif->type == NL80211_IFTYPE_MONITOR) {
1440 mvmvif->monitor_active = true;
1441 ret = iwl_mvm_update_quotas(mvm, vif);
1442 if (ret)
1443 goto out_remove_binding;
1444 }
1445
1446 goto out_unlock;
1447
1448 out_remove_binding:
1449 iwl_mvm_binding_remove_vif(mvm, vif);
1450 out_unlock:
1451 mutex_unlock(&mvm->mutex);
1452 if (ret)
1453 mvmvif->phy_ctxt = NULL;
1454 return ret;
1455 }
1456
1457 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1458 struct ieee80211_vif *vif,
1459 struct ieee80211_chanctx_conf *ctx)
1460 {
1461 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1462 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1463
1464 mutex_lock(&mvm->mutex);
1465
1466 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1467
1468 if (vif->type == NL80211_IFTYPE_AP)
1469 goto out_unlock;
1470
1471 switch (vif->type) {
1472 case NL80211_IFTYPE_MONITOR:
1473 mvmvif->monitor_active = false;
1474 iwl_mvm_update_quotas(mvm, NULL);
1475 break;
1476 default:
1477 break;
1478 }
1479
1480 iwl_mvm_binding_remove_vif(mvm, vif);
1481 out_unlock:
1482 mvmvif->phy_ctxt = NULL;
1483 mutex_unlock(&mvm->mutex);
1484 }
1485
1486 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1487 struct ieee80211_sta *sta,
1488 bool set)
1489 {
1490 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1491 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1492
1493 if (!mvm_sta || !mvm_sta->vif) {
1494 IWL_ERR(mvm, "Station is not associated to a vif\n");
1495 return -EINVAL;
1496 }
1497
1498 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1499 }
1500
1501 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1502 struct ieee80211_vif *vif,
1503 enum ieee80211_rssi_event rssi_event)
1504 {
1505 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1506
1507 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1508 }
1509
1510 struct ieee80211_ops iwl_mvm_hw_ops = {
1511 .tx = iwl_mvm_mac_tx,
1512 .ampdu_action = iwl_mvm_mac_ampdu_action,
1513 .start = iwl_mvm_mac_start,
1514 .restart_complete = iwl_mvm_mac_restart_complete,
1515 .stop = iwl_mvm_mac_stop,
1516 .add_interface = iwl_mvm_mac_add_interface,
1517 .remove_interface = iwl_mvm_mac_remove_interface,
1518 .config = iwl_mvm_mac_config,
1519 .configure_filter = iwl_mvm_configure_filter,
1520 .bss_info_changed = iwl_mvm_bss_info_changed,
1521 .hw_scan = iwl_mvm_mac_hw_scan,
1522 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1523 .sta_state = iwl_mvm_mac_sta_state,
1524 .sta_notify = iwl_mvm_mac_sta_notify,
1525 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1526 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1527 .conf_tx = iwl_mvm_mac_conf_tx,
1528 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1529 .set_key = iwl_mvm_mac_set_key,
1530 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1531 .remain_on_channel = iwl_mvm_roc,
1532 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1533 .rssi_callback = iwl_mvm_mac_rssi_callback,
1534
1535 .add_chanctx = iwl_mvm_add_chanctx,
1536 .remove_chanctx = iwl_mvm_remove_chanctx,
1537 .change_chanctx = iwl_mvm_change_chanctx,
1538 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1539 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1540
1541 .start_ap = iwl_mvm_start_ap,
1542 .stop_ap = iwl_mvm_stop_ap,
1543
1544 .set_tim = iwl_mvm_set_tim,
1545
1546 #ifdef CONFIG_PM_SLEEP
1547 /* look at d3.c */
1548 .suspend = iwl_mvm_suspend,
1549 .resume = iwl_mvm_resume,
1550 .set_wakeup = iwl_mvm_set_wakeup,
1551 .set_rekey_data = iwl_mvm_set_rekey_data,
1552 #if IS_ENABLED(CONFIG_IPV6)
1553 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1554 #endif
1555 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1556 #endif
1557 };
Linux kernel - Deliverables
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