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Linux 3.11-rc3
[cris-mirror.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
blobe08683b2053183f7e7ea9df370a37bdb4b70c2e4
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 return ieee80211_register_hw(mvm->hw);
261 }
262
263 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
264 struct ieee80211_tx_control *control,
265 struct sk_buff *skb)
266 {
267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
268
269 if (iwl_mvm_is_radio_killed(mvm)) {
270 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
271 goto drop;
272 }
273
274 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
275 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
276 goto drop;
277
278 if (control->sta) {
279 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
280 goto drop;
281 return;
282 }
283
284 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
285 goto drop;
286 return;
287 drop:
288 ieee80211_free_txskb(hw, skb);
289 }
290
291 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
292 struct ieee80211_vif *vif,
293 enum ieee80211_ampdu_mlme_action action,
294 struct ieee80211_sta *sta, u16 tid,
295 u16 *ssn, u8 buf_size)
296 {
297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
298 int ret;
299
300 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
301 sta->addr, tid, action);
302
303 if (!(mvm->nvm_data->sku_cap_11n_enable))
304 return -EACCES;
305
306 mutex_lock(&mvm->mutex);
307
308 switch (action) {
309 case IEEE80211_AMPDU_RX_START:
310 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
311 ret = -EINVAL;
312 break;
313 }
314 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
315 break;
316 case IEEE80211_AMPDU_RX_STOP:
317 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
318 break;
319 case IEEE80211_AMPDU_TX_START:
320 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
321 ret = -EINVAL;
322 break;
323 }
324 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
325 break;
326 case IEEE80211_AMPDU_TX_STOP_CONT:
327 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
328 break;
329 case IEEE80211_AMPDU_TX_STOP_FLUSH:
330 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
331 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
332 break;
333 case IEEE80211_AMPDU_TX_OPERATIONAL:
334 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
335 break;
336 default:
337 WARN_ON_ONCE(1);
338 ret = -EINVAL;
339 break;
340 }
341 mutex_unlock(&mvm->mutex);
342
343 return ret;
344 }
345
346 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
347 struct ieee80211_vif *vif)
348 {
349 struct iwl_mvm *mvm = data;
350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
351
352 mvmvif->uploaded = false;
353 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
354
355 /* does this make sense at all? */
356 mvmvif->color++;
357
358 spin_lock_bh(&mvm->time_event_lock);
359 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
360 spin_unlock_bh(&mvm->time_event_lock);
361
362 mvmvif->phy_ctxt = NULL;
363 }
364
365 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
366 {
367 iwl_trans_stop_device(mvm->trans);
368 iwl_trans_stop_hw(mvm->trans, false);
369
370 mvm->scan_status = IWL_MVM_SCAN_NONE;
371
372 /* just in case one was running */
373 ieee80211_remain_on_channel_expired(mvm->hw);
374
375 ieee80211_iterate_active_interfaces_atomic(
376 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
377 iwl_mvm_cleanup_iterator, mvm);
378
379 mvm->p2p_device_vif = NULL;
380
381 iwl_mvm_reset_phy_ctxts(mvm);
382 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
383 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
384
385 ieee80211_wake_queues(mvm->hw);
386
387 mvm->vif_count = 0;
388 }
389
390 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
391 {
392 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
393 int ret;
394
395 mutex_lock(&mvm->mutex);
396
397 /* Clean up some internal and mac80211 state on restart */
398 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
399 iwl_mvm_restart_cleanup(mvm);
400
401 ret = iwl_mvm_up(mvm);
402 mutex_unlock(&mvm->mutex);
403
404 return ret;
405 }
406
407 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
408 {
409 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
410 int ret;
411
412 mutex_lock(&mvm->mutex);
413
414 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
415 ret = iwl_mvm_update_quotas(mvm, NULL);
416 if (ret)
417 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
418 ret);
419
420 mutex_unlock(&mvm->mutex);
421 }
422
423 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
424 {
425 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
426
427 flush_work(&mvm->async_handlers_wk);
428
429 mutex_lock(&mvm->mutex);
430 /* async_handlers_wk is now blocked */
431
432 /*
433 * The work item could be running or queued if the
434 * ROC time event stops just as we get here.
435 */
436 cancel_work_sync(&mvm->roc_done_wk);
437
438 iwl_trans_stop_device(mvm->trans);
439 iwl_trans_stop_hw(mvm->trans, false);
440
441 iwl_mvm_async_handlers_purge(mvm);
442 /* async_handlers_list is empty and will stay empty: HW is stopped */
443
444 /* the fw is stopped, the aux sta is dead: clean up driver state */
445 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
446
447 mutex_unlock(&mvm->mutex);
448
449 /*
450 * The worker might have been waiting for the mutex, let it run and
451 * discover that its list is now empty.
452 */
453 cancel_work_sync(&mvm->async_handlers_wk);
454 }
455
456 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
457 struct ieee80211_vif *vif)
458 {
459 struct iwl_mvm *mvm = data;
460 int ret;
461
462 ret = iwl_mvm_power_disable(mvm, vif);
463 if (ret)
464 IWL_ERR(mvm, "failed to disable power management\n");
465 }
466
467 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
468 struct ieee80211_vif *vif)
469 {
470 struct iwl_mvm *mvm = data;
471
472 iwl_mvm_power_update_mode(mvm, vif);
473 }
474
475 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
476 {
477 u16 i;
478
479 lockdep_assert_held(&mvm->mutex);
480
481 for (i = 0; i < NUM_PHY_CTX; i++)
482 if (!mvm->phy_ctxts[i].ref)
483 return &mvm->phy_ctxts[i];
484
485 IWL_ERR(mvm, "No available PHY context\n");
486 return NULL;
487 }
488
489 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
490 struct ieee80211_vif *vif)
491 {
492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
493 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
494 int ret;
495
496 /*
497 * Not much to do here. The stack will not allow interface
498 * types or combinations that we didn't advertise, so we
499 * don't really have to check the types.
500 */
501
502 mutex_lock(&mvm->mutex);
503
504 /* Allocate resources for the MAC context, and add it the the fw */
505 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
506 if (ret)
507 goto out_unlock;
508
509 /*
510 * The AP binding flow can be done only after the beacon
511 * template is configured (which happens only in the mac80211
512 * start_ap() flow), and adding the broadcast station can happen
513 * only after the binding.
514 * In addition, since modifying the MAC before adding a bcast
515 * station is not allowed by the FW, delay the adding of MAC context to
516 * the point where we can also add the bcast station.
517 * In short: there's not much we can do at this point, other than
518 * allocating resources :)
519 */
520 if (vif->type == NL80211_IFTYPE_AP) {
521 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
522 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
523 qmask);
524 if (ret) {
525 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
526 goto out_release;
527 }
528
529 goto out_unlock;
530 }
531
532 /*
533 * TODO: remove this temporary code.
534 * Currently MVM FW supports power management only on single MAC.
535 * If new interface added, disable PM on existing interface.
536 * P2P device is a special case, since it is handled by FW similary to
537 * scan. If P2P deviced is added, PM remains enabled on existing
538 * interface.
539 * Note: the method below does not count the new interface being added
540 * at this moment.
541 */
542 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
543 mvm->vif_count++;
544 if (mvm->vif_count > 1) {
545 IWL_DEBUG_MAC80211(mvm,
546 "Disable power on existing interfaces\n");
547 ieee80211_iterate_active_interfaces_atomic(
548 mvm->hw,
549 IEEE80211_IFACE_ITER_NORMAL,
550 iwl_mvm_pm_disable_iterator, mvm);
551 }
552
553 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
554 if (ret)
555 goto out_release;
556
557 /*
558 * Update power state on the new interface. Admittedly, based on
559 * mac80211 logics this power update will disable power management
560 */
561 iwl_mvm_power_update_mode(mvm, vif);
562
563 /* beacon filtering */
564 if (!mvm->bf_allowed_vif &&
565 vif->type == NL80211_IFTYPE_STATION && !vif->p2p){
566 mvm->bf_allowed_vif = mvmvif;
567 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
568 }
569
570 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
571 if (ret)
572 goto out_release;
573
574 /*
575 * P2P_DEVICE interface does not have a channel context assigned to it,
576 * so a dedicated PHY context is allocated to it and the corresponding
577 * MAC context is bound to it at this stage.
578 */
579 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
580
581 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
582 if (!mvmvif->phy_ctxt) {
583 ret = -ENOSPC;
584 goto out_remove_mac;
585 }
586
587 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
588 ret = iwl_mvm_binding_add_vif(mvm, vif);
589 if (ret)
590 goto out_unref_phy;
591
592 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
593 if (ret)
594 goto out_unbind;
595
596 /* Save a pointer to p2p device vif, so it can later be used to
597 * update the p2p device MAC when a GO is started/stopped */
598 mvm->p2p_device_vif = vif;
599 }
600
601 iwl_mvm_vif_dbgfs_register(mvm, vif);
602 goto out_unlock;
603
604 out_unbind:
605 iwl_mvm_binding_remove_vif(mvm, vif);
606 out_unref_phy:
607 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
608 out_remove_mac:
609 mvmvif->phy_ctxt = NULL;
610 iwl_mvm_mac_ctxt_remove(mvm, vif);
611 out_release:
612 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
613 mvm->vif_count--;
614 ieee80211_iterate_active_interfaces(
615 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
616 iwl_mvm_power_update_iterator, mvm);
617 iwl_mvm_mac_ctxt_release(mvm, vif);
618 out_unlock:
619 mutex_unlock(&mvm->mutex);
620
621 return ret;
622 }
623
624 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
625 struct ieee80211_vif *vif)
626 {
627 u32 tfd_msk = 0, ac;
628
629 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
630 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
631 tfd_msk |= BIT(vif->hw_queue[ac]);
632
633 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
634 tfd_msk |= BIT(vif->cab_queue);
635
636 if (tfd_msk) {
637 mutex_lock(&mvm->mutex);
638 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
639 mutex_unlock(&mvm->mutex);
640 }
641
642 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
643 /*
644 * Flush the ROC worker which will flush the OFFCHANNEL queue.
645 * We assume here that all the packets sent to the OFFCHANNEL
646 * queue are sent in ROC session.
647 */
648 flush_work(&mvm->roc_done_wk);
649 } else {
650 /*
651 * By now, all the AC queues are empty. The AGG queues are
652 * empty too. We already got all the Tx responses for all the
653 * packets in the queues. The drain work can have been
654 * triggered. Flush it.
655 */
656 flush_work(&mvm->sta_drained_wk);
657 }
658 }
659
660 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
661 struct ieee80211_vif *vif)
662 {
663 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
665
666 iwl_mvm_prepare_mac_removal(mvm, vif);
667
668 mutex_lock(&mvm->mutex);
669
670 if (mvm->bf_allowed_vif == mvmvif) {
671 mvm->bf_allowed_vif = NULL;
672 vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
673 }
674
675 iwl_mvm_vif_dbgfs_clean(mvm, vif);
676
677 /*
678 * For AP/GO interface, the tear down of the resources allocated to the
679 * interface is be handled as part of the stop_ap flow.
680 */
681 if (vif->type == NL80211_IFTYPE_AP) {
682 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
683 goto out_release;
684 }
685
686 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
687 mvm->p2p_device_vif = NULL;
688 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
689 iwl_mvm_binding_remove_vif(mvm, vif);
690 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
691 mvmvif->phy_ctxt = NULL;
692 }
693
694 /*
695 * TODO: remove this temporary code.
696 * Currently MVM FW supports power management only on single MAC.
697 * Check if only one additional interface remains after removing
698 * current one. Update power mode on the remaining interface.
699 */
700 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
701 mvm->vif_count--;
702 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
703 mvm->vif_count);
704 if (mvm->vif_count == 1) {
705 ieee80211_iterate_active_interfaces(
706 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
707 iwl_mvm_power_update_iterator, mvm);
708 }
709
710 iwl_mvm_mac_ctxt_remove(mvm, vif);
711
712 out_release:
713 iwl_mvm_mac_ctxt_release(mvm, vif);
714 mutex_unlock(&mvm->mutex);
715 }
716
717 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
718 {
719 return 0;
720 }
721
722 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
723 unsigned int changed_flags,
724 unsigned int *total_flags,
725 u64 multicast)
726 {
727 *total_flags = 0;
728 }
729
730 static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
731 struct ieee80211_vif *vif)
732 {
733 struct iwl_mcast_filter_cmd mcast_filter_cmd = {
734 .pass_all = 1,
735 };
736
737 memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
738
739 return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
740 sizeof(mcast_filter_cmd),
741 &mcast_filter_cmd);
742 }
743
744 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
745 struct ieee80211_vif *vif,
746 struct ieee80211_bss_conf *bss_conf,
747 u32 changes)
748 {
749 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
750 int ret;
751
752 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
753 if (ret)
754 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
755
756 if (changes & BSS_CHANGED_ASSOC) {
757 if (bss_conf->assoc) {
758 /* add quota for this interface */
759 ret = iwl_mvm_update_quotas(mvm, vif);
760 if (ret) {
761 IWL_ERR(mvm, "failed to update quotas\n");
762 return;
763 }
764 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
765 iwl_mvm_configure_mcast_filter(mvm, vif);
766 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
767 /* remove AP station now that the MAC is unassoc */
768 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
769 if (ret)
770 IWL_ERR(mvm, "failed to remove AP station\n");
771 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
772 /* remove quota for this interface */
773 ret = iwl_mvm_update_quotas(mvm, NULL);
774 if (ret)
775 IWL_ERR(mvm, "failed to update quotas\n");
776 }
777 ret = iwl_mvm_power_update_mode(mvm, vif);
778 if (ret)
779 IWL_ERR(mvm, "failed to update power mode\n");
780 } else if (changes & BSS_CHANGED_BEACON_INFO) {
781 /*
782 * We received a beacon _after_ association so
783 * remove the session protection.
784 */
785 iwl_mvm_remove_time_event(mvm, mvmvif,
786 &mvmvif->time_event_data);
787 } else if (changes & BSS_CHANGED_PS) {
788 ret = iwl_mvm_power_update_mode(mvm, vif);
789 if (ret)
790 IWL_ERR(mvm, "failed to update power mode\n");
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 ret = iwl_mvm_add_sta(mvm, vif, sta);
1010 } else if (old_state == IEEE80211_STA_NONE &&
1011 new_state == IEEE80211_STA_AUTH) {
1012 ret = 0;
1013 } else if (old_state == IEEE80211_STA_AUTH &&
1014 new_state == IEEE80211_STA_ASSOC) {
1015 ret = iwl_mvm_update_sta(mvm, vif, sta);
1016 if (ret == 0)
1017 iwl_mvm_rs_rate_init(mvm, sta,
1018 mvmvif->phy_ctxt->channel->band);
1019 } else if (old_state == IEEE80211_STA_ASSOC &&
1020 new_state == IEEE80211_STA_AUTHORIZED) {
1021 /* enable beacon filtering */
1022 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1023 ret = 0;
1024 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1025 new_state == IEEE80211_STA_ASSOC) {
1026 /* disable beacon filtering */
1027 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1028 ret = 0;
1029 } else if (old_state == IEEE80211_STA_ASSOC &&
1030 new_state == IEEE80211_STA_AUTH) {
1031 ret = 0;
1032 } else if (old_state == IEEE80211_STA_AUTH &&
1033 new_state == IEEE80211_STA_NONE) {
1034 ret = 0;
1035 } else if (old_state == IEEE80211_STA_NONE &&
1036 new_state == IEEE80211_STA_NOTEXIST) {
1037 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1038 } else {
1039 ret = -EIO;
1040 }
1041 mutex_unlock(&mvm->mutex);
1042
1043 return ret;
1044 }
1045
1046 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1047 {
1048 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1049
1050 mvm->rts_threshold = value;
1051
1052 return 0;
1053 }
1054
1055 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1056 struct ieee80211_vif *vif, u16 ac,
1057 const struct ieee80211_tx_queue_params *params)
1058 {
1059 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1060 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1061
1062 mvmvif->queue_params[ac] = *params;
1063
1064 /*
1065 * No need to update right away, we'll get BSS_CHANGED_QOS
1066 * The exception is P2P_DEVICE interface which needs immediate update.
1067 */
1068 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1069 int ret;
1070
1071 mutex_lock(&mvm->mutex);
1072 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1073 mutex_unlock(&mvm->mutex);
1074 return ret;
1075 }
1076 return 0;
1077 }
1078
1079 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1080 struct ieee80211_vif *vif)
1081 {
1082 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1083 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1084 200 + vif->bss_conf.beacon_int);
1085 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1086 100 + vif->bss_conf.beacon_int);
1087
1088 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1089 return;
1090
1091 mutex_lock(&mvm->mutex);
1092 /* Try really hard to protect the session and hear a beacon */
1093 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1094 mutex_unlock(&mvm->mutex);
1095 }
1096
1097 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1098 enum set_key_cmd cmd,
1099 struct ieee80211_vif *vif,
1100 struct ieee80211_sta *sta,
1101 struct ieee80211_key_conf *key)
1102 {
1103 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1104 int ret;
1105
1106 if (iwlwifi_mod_params.sw_crypto) {
1107 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1108 return -EOPNOTSUPP;
1109 }
1110
1111 switch (key->cipher) {
1112 case WLAN_CIPHER_SUITE_TKIP:
1113 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1114 /* fall-through */
1115 case WLAN_CIPHER_SUITE_CCMP:
1116 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1117 break;
1118 case WLAN_CIPHER_SUITE_AES_CMAC:
1119 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1120 break;
1121 case WLAN_CIPHER_SUITE_WEP40:
1122 case WLAN_CIPHER_SUITE_WEP104:
1123 /*
1124 * Support for TX only, at least for now, so accept
1125 * the key and do nothing else. Then mac80211 will
1126 * pass it for TX but we don't have to use it for RX.
1127 */
1128 return 0;
1129 default:
1130 return -EOPNOTSUPP;
1131 }
1132
1133 mutex_lock(&mvm->mutex);
1134
1135 switch (cmd) {
1136 case SET_KEY:
1137 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1138 /* GTK on AP interface is a TX-only key, return 0 */
1139 ret = 0;
1140 key->hw_key_idx = STA_KEY_IDX_INVALID;
1141 break;
1142 }
1143
1144 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1145 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1146 if (ret) {
1147 IWL_WARN(mvm, "set key failed\n");
1148 /*
1149 * can't add key for RX, but we don't need it
1150 * in the device for TX so still return 0
1151 */
1152 key->hw_key_idx = STA_KEY_IDX_INVALID;
1153 ret = 0;
1154 }
1155
1156 break;
1157 case DISABLE_KEY:
1158 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1159 ret = 0;
1160 break;
1161 }
1162
1163 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1164 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1165 break;
1166 default:
1167 ret = -EINVAL;
1168 }
1169
1170 mutex_unlock(&mvm->mutex);
1171 return ret;
1172 }
1173
1174 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1175 struct ieee80211_vif *vif,
1176 struct ieee80211_key_conf *keyconf,
1177 struct ieee80211_sta *sta,
1178 u32 iv32, u16 *phase1key)
1179 {
1180 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1181
1182 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1183 }
1184
1185
1186 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1187 struct ieee80211_vif *vif,
1188 struct ieee80211_channel *channel,
1189 int duration,
1190 enum ieee80211_roc_type type)
1191 {
1192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1194 struct cfg80211_chan_def chandef;
1195 struct iwl_mvm_phy_ctxt *phy_ctxt;
1196 int ret, i;
1197
1198 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1199 duration, type);
1200
1201 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1202 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1203 return -EINVAL;
1204 }
1205
1206 mutex_lock(&mvm->mutex);
1207
1208 for (i = 0; i < NUM_PHY_CTX; i++) {
1209 phy_ctxt = &mvm->phy_ctxts[i];
1210 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1211 continue;
1212
1213 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1214 /*
1215 * Unbind the P2P_DEVICE from the current PHY context,
1216 * and if the PHY context is not used remove it.
1217 */
1218 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1219 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1220 goto out_unlock;
1221
1222 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1223
1224 /* Bind the P2P_DEVICE to the current PHY Context */
1225 mvmvif->phy_ctxt = phy_ctxt;
1226
1227 ret = iwl_mvm_binding_add_vif(mvm, vif);
1228 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1229 goto out_unlock;
1230
1231 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1232 goto schedule_time_event;
1233 }
1234 }
1235
1236 /* Need to update the PHY context only if the ROC channel changed */
1237 if (channel == mvmvif->phy_ctxt->channel)
1238 goto schedule_time_event;
1239
1240 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1241
1242 /*
1243 * Change the PHY context configuration as it is currently referenced
1244 * only by the P2P Device MAC
1245 */
1246 if (mvmvif->phy_ctxt->ref == 1) {
1247 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1248 &chandef, 1, 1);
1249 if (ret)
1250 goto out_unlock;
1251 } else {
1252 /*
1253 * The PHY context is shared with other MACs. Need to remove the
1254 * P2P Device from the binding, allocate an new PHY context and
1255 * create a new binding
1256 */
1257 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1258 if (!phy_ctxt) {
1259 ret = -ENOSPC;
1260 goto out_unlock;
1261 }
1262
1263 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1264 1, 1);
1265 if (ret) {
1266 IWL_ERR(mvm, "Failed to change PHY context\n");
1267 goto out_unlock;
1268 }
1269
1270 /* Unbind the P2P_DEVICE from the current PHY context */
1271 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1272 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1273 goto out_unlock;
1274
1275 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1276
1277 /* Bind the P2P_DEVICE to the new allocated PHY context */
1278 mvmvif->phy_ctxt = phy_ctxt;
1279
1280 ret = iwl_mvm_binding_add_vif(mvm, vif);
1281 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1282 goto out_unlock;
1283
1284 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1285 }
1286
1287 schedule_time_event:
1288 /* Schedule the time events */
1289 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1290
1291 out_unlock:
1292 mutex_unlock(&mvm->mutex);
1293 IWL_DEBUG_MAC80211(mvm, "leave\n");
1294 return ret;
1295 }
1296
1297 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1298 {
1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300
1301 IWL_DEBUG_MAC80211(mvm, "enter\n");
1302
1303 mutex_lock(&mvm->mutex);
1304 iwl_mvm_stop_p2p_roc(mvm);
1305 mutex_unlock(&mvm->mutex);
1306
1307 IWL_DEBUG_MAC80211(mvm, "leave\n");
1308 return 0;
1309 }
1310
1311 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1312 struct ieee80211_chanctx_conf *ctx)
1313 {
1314 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1315 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1316 struct iwl_mvm_phy_ctxt *phy_ctxt;
1317 int ret;
1318
1319 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1320
1321 mutex_lock(&mvm->mutex);
1322 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1323 if (!phy_ctxt) {
1324 ret = -ENOSPC;
1325 goto out;
1326 }
1327
1328 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1329 ctx->rx_chains_static,
1330 ctx->rx_chains_dynamic);
1331 if (ret) {
1332 IWL_ERR(mvm, "Failed to add PHY context\n");
1333 goto out;
1334 }
1335
1336 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1337 *phy_ctxt_id = phy_ctxt->id;
1338 out:
1339 mutex_unlock(&mvm->mutex);
1340 return ret;
1341 }
1342
1343 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1344 struct ieee80211_chanctx_conf *ctx)
1345 {
1346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1347 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1348 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1349
1350 mutex_lock(&mvm->mutex);
1351 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1352 mutex_unlock(&mvm->mutex);
1353 }
1354
1355 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1356 struct ieee80211_chanctx_conf *ctx,
1357 u32 changed)
1358 {
1359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1360 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1361 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1362
1363 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1364 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1365 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1366 IEEE80211_CHANCTX_CHANGE_RADAR)),
1367 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1368 phy_ctxt->ref, changed))
1369 return;
1370
1371 mutex_lock(&mvm->mutex);
1372 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1373 ctx->rx_chains_static,
1374 ctx->rx_chains_dynamic);
1375 mutex_unlock(&mvm->mutex);
1376 }
1377
1378 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1379 struct ieee80211_vif *vif,
1380 struct ieee80211_chanctx_conf *ctx)
1381 {
1382 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1383 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1384 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1385 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1386 int ret;
1387
1388 mutex_lock(&mvm->mutex);
1389
1390 mvmvif->phy_ctxt = phy_ctxt;
1391
1392 switch (vif->type) {
1393 case NL80211_IFTYPE_AP:
1394 /*
1395 * The AP binding flow is handled as part of the start_ap flow
1396 * (in bss_info_changed).
1397 */
1398 ret = 0;
1399 goto out_unlock;
1400 case NL80211_IFTYPE_STATION:
1401 case NL80211_IFTYPE_ADHOC:
1402 case NL80211_IFTYPE_MONITOR:
1403 break;
1404 default:
1405 ret = -EINVAL;
1406 goto out_unlock;
1407 }
1408
1409 ret = iwl_mvm_binding_add_vif(mvm, vif);
1410 if (ret)
1411 goto out_unlock;
1412
1413 /*
1414 * Setting the quota at this stage is only required for monitor
1415 * interfaces. For the other types, the bss_info changed flow
1416 * will handle quota settings.
1417 */
1418 if (vif->type == NL80211_IFTYPE_MONITOR) {
1419 mvmvif->monitor_active = true;
1420 ret = iwl_mvm_update_quotas(mvm, vif);
1421 if (ret)
1422 goto out_remove_binding;
1423 }
1424
1425 goto out_unlock;
1426
1427 out_remove_binding:
1428 iwl_mvm_binding_remove_vif(mvm, vif);
1429 out_unlock:
1430 mutex_unlock(&mvm->mutex);
1431 if (ret)
1432 mvmvif->phy_ctxt = NULL;
1433 return ret;
1434 }
1435
1436 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1437 struct ieee80211_vif *vif,
1438 struct ieee80211_chanctx_conf *ctx)
1439 {
1440 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1441 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1442
1443 mutex_lock(&mvm->mutex);
1444
1445 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1446
1447 if (vif->type == NL80211_IFTYPE_AP)
1448 goto out_unlock;
1449
1450 switch (vif->type) {
1451 case NL80211_IFTYPE_MONITOR:
1452 mvmvif->monitor_active = false;
1453 iwl_mvm_update_quotas(mvm, NULL);
1454 break;
1455 default:
1456 break;
1457 }
1458
1459 iwl_mvm_binding_remove_vif(mvm, vif);
1460 out_unlock:
1461 mvmvif->phy_ctxt = NULL;
1462 mutex_unlock(&mvm->mutex);
1463 }
1464
1465 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1466 struct ieee80211_sta *sta,
1467 bool set)
1468 {
1469 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1470 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1471
1472 if (!mvm_sta || !mvm_sta->vif) {
1473 IWL_ERR(mvm, "Station is not associated to a vif\n");
1474 return -EINVAL;
1475 }
1476
1477 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1478 }
1479
1480 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1481 struct ieee80211_vif *vif,
1482 enum ieee80211_rssi_event rssi_event)
1483 {
1484 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1485
1486 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1487 }
1488
1489 struct ieee80211_ops iwl_mvm_hw_ops = {
1490 .tx = iwl_mvm_mac_tx,
1491 .ampdu_action = iwl_mvm_mac_ampdu_action,
1492 .start = iwl_mvm_mac_start,
1493 .restart_complete = iwl_mvm_mac_restart_complete,
1494 .stop = iwl_mvm_mac_stop,
1495 .add_interface = iwl_mvm_mac_add_interface,
1496 .remove_interface = iwl_mvm_mac_remove_interface,
1497 .config = iwl_mvm_mac_config,
1498 .configure_filter = iwl_mvm_configure_filter,
1499 .bss_info_changed = iwl_mvm_bss_info_changed,
1500 .hw_scan = iwl_mvm_mac_hw_scan,
1501 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1502 .sta_state = iwl_mvm_mac_sta_state,
1503 .sta_notify = iwl_mvm_mac_sta_notify,
1504 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1505 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1506 .conf_tx = iwl_mvm_mac_conf_tx,
1507 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1508 .set_key = iwl_mvm_mac_set_key,
1509 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1510 .remain_on_channel = iwl_mvm_roc,
1511 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1512 .rssi_callback = iwl_mvm_mac_rssi_callback,
1513
1514 .add_chanctx = iwl_mvm_add_chanctx,
1515 .remove_chanctx = iwl_mvm_remove_chanctx,
1516 .change_chanctx = iwl_mvm_change_chanctx,
1517 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1518 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1519
1520 .start_ap = iwl_mvm_start_ap,
1521 .stop_ap = iwl_mvm_stop_ap,
1522
1523 .set_tim = iwl_mvm_set_tim,
1524
1525 #ifdef CONFIG_PM_SLEEP
1526 /* look at d3.c */
1527 .suspend = iwl_mvm_suspend,
1528 .resume = iwl_mvm_resume,
1529 .set_wakeup = iwl_mvm_set_wakeup,
1530 .set_rekey_data = iwl_mvm_set_rekey_data,
1531 #if IS_ENABLED(CONFIG_IPV6)
1532 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1533 #endif
1534 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1535 #endif
1536 };
CRIS linux kernel tree