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iwlwifi: mvm: Enable user set TX power
[linux-2.6.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
blobfbb8c2dc66e02b3ec5ddf445284a2642b65287fc
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_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
718 s8 tx_power)
719 {
720 /* FW is in charge of regulatory enforcement */
721 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
722 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
723 .pwr_restriction = cpu_to_le16(tx_power),
724 };
725
726 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
727 sizeof(reduce_txpwr_cmd),
728 &reduce_txpwr_cmd);
729 }
730
731 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
732 {
733 return 0;
734 }
735
736 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
737 unsigned int changed_flags,
738 unsigned int *total_flags,
739 u64 multicast)
740 {
741 *total_flags = 0;
742 }
743
744 static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
745 struct ieee80211_vif *vif)
746 {
747 struct iwl_mcast_filter_cmd mcast_filter_cmd = {
748 .pass_all = 1,
749 };
750
751 memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
752
753 return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
754 sizeof(mcast_filter_cmd),
755 &mcast_filter_cmd);
756 }
757
758 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
759 struct ieee80211_vif *vif,
760 struct ieee80211_bss_conf *bss_conf,
761 u32 changes)
762 {
763 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
764 int ret;
765
766 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
767 if (ret)
768 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
769
770 if (changes & BSS_CHANGED_ASSOC) {
771 if (bss_conf->assoc) {
772 /* add quota for this interface */
773 ret = iwl_mvm_update_quotas(mvm, vif);
774 if (ret) {
775 IWL_ERR(mvm, "failed to update quotas\n");
776 return;
777 }
778 iwl_mvm_configure_mcast_filter(mvm, vif);
779 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
780 /* remove AP station now that the MAC is unassoc */
781 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
782 if (ret)
783 IWL_ERR(mvm, "failed to remove AP station\n");
784 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
785 /* remove quota for this interface */
786 ret = iwl_mvm_update_quotas(mvm, NULL);
787 if (ret)
788 IWL_ERR(mvm, "failed to update quotas\n");
789 }
790 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD)) {
791 /* Workaround for FW bug, otherwise FW disables device
792 * power save upon disassociation
793 */
794 ret = iwl_mvm_power_update_mode(mvm, vif);
795 if (ret)
796 IWL_ERR(mvm, "failed to update power mode\n");
797 }
798 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
799 } else if (changes & BSS_CHANGED_BEACON_INFO) {
800 /*
801 * We received a beacon _after_ association so
802 * remove the session protection.
803 */
804 iwl_mvm_remove_time_event(mvm, mvmvif,
805 &mvmvif->time_event_data);
806 } else if (changes & BSS_CHANGED_PS) {
807 ret = iwl_mvm_power_update_mode(mvm, vif);
808 if (ret)
809 IWL_ERR(mvm, "failed to update power mode\n");
810 }
811 if (changes & BSS_CHANGED_TXPOWER) {
812 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
813 bss_conf->txpower);
814 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
815 }
816 }
817
818 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
819 {
820 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
821 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
822 int ret;
823
824 mutex_lock(&mvm->mutex);
825
826 /* Send the beacon template */
827 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
828 if (ret)
829 goto out_unlock;
830
831 /* Add the mac context */
832 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
833 if (ret)
834 goto out_unlock;
835
836 /* Perform the binding */
837 ret = iwl_mvm_binding_add_vif(mvm, vif);
838 if (ret)
839 goto out_remove;
840
841 mvmvif->ap_active = true;
842
843 /* Send the bcast station. At this stage the TBTT and DTIM time events
844 * are added and applied to the scheduler */
845 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
846 if (ret)
847 goto out_unbind;
848
849 ret = iwl_mvm_update_quotas(mvm, vif);
850 if (ret)
851 goto out_rm_bcast;
852
853 /* Need to update the P2P Device MAC */
854 if (vif->p2p && mvm->p2p_device_vif)
855 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
856
857 mutex_unlock(&mvm->mutex);
858 return 0;
859
860 out_rm_bcast:
861 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
862 out_unbind:
863 iwl_mvm_binding_remove_vif(mvm, vif);
864 out_remove:
865 iwl_mvm_mac_ctxt_remove(mvm, vif);
866 out_unlock:
867 mutex_unlock(&mvm->mutex);
868 return ret;
869 }
870
871 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
872 {
873 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
874 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
875
876 iwl_mvm_prepare_mac_removal(mvm, vif);
877
878 mutex_lock(&mvm->mutex);
879
880 mvmvif->ap_active = false;
881
882 /* Need to update the P2P Device MAC */
883 if (vif->p2p && mvm->p2p_device_vif)
884 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
885
886 iwl_mvm_update_quotas(mvm, NULL);
887 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
888 iwl_mvm_binding_remove_vif(mvm, vif);
889 iwl_mvm_mac_ctxt_remove(mvm, vif);
890
891 mutex_unlock(&mvm->mutex);
892 }
893
894 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
895 struct ieee80211_vif *vif,
896 struct ieee80211_bss_conf *bss_conf,
897 u32 changes)
898 {
899 /* Need to send a new beacon template to the FW */
900 if (changes & BSS_CHANGED_BEACON) {
901 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
902 IWL_WARN(mvm, "Failed updating beacon data\n");
903 }
904 }
905
906 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
907 struct ieee80211_vif *vif,
908 struct ieee80211_bss_conf *bss_conf,
909 u32 changes)
910 {
911 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
912
913 mutex_lock(&mvm->mutex);
914
915 switch (vif->type) {
916 case NL80211_IFTYPE_STATION:
917 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
918 break;
919 case NL80211_IFTYPE_AP:
920 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
921 break;
922 default:
923 /* shouldn't happen */
924 WARN_ON_ONCE(1);
925 }
926
927 mutex_unlock(&mvm->mutex);
928 }
929
930 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
931 struct ieee80211_vif *vif,
932 struct cfg80211_scan_request *req)
933 {
934 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
935 int ret;
936
937 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
938 return -EINVAL;
939
940 mutex_lock(&mvm->mutex);
941
942 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
943 ret = iwl_mvm_scan_request(mvm, vif, req);
944 else
945 ret = -EBUSY;
946
947 mutex_unlock(&mvm->mutex);
948
949 return ret;
950 }
951
952 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
953 struct ieee80211_vif *vif)
954 {
955 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
956
957 mutex_lock(&mvm->mutex);
958
959 iwl_mvm_cancel_scan(mvm);
960
961 mutex_unlock(&mvm->mutex);
962 }
963
964 static void
965 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
966 struct ieee80211_sta *sta, u16 tid,
967 int num_frames,
968 enum ieee80211_frame_release_type reason,
969 bool more_data)
970 {
971 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
972
973 /* TODO: how do we tell the fw to send frames for a specific TID */
974
975 /*
976 * The fw will send EOSP notification when the last frame will be
977 * transmitted.
978 */
979 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
980 }
981
982 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
983 struct ieee80211_vif *vif,
984 enum sta_notify_cmd cmd,
985 struct ieee80211_sta *sta)
986 {
987 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
988 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
989
990 switch (cmd) {
991 case STA_NOTIFY_SLEEP:
992 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
993 ieee80211_sta_block_awake(hw, sta, true);
994 /*
995 * The fw updates the STA to be asleep. Tx packets on the Tx
996 * queues to this station will not be transmitted. The fw will
997 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
998 */
999 break;
1000 case STA_NOTIFY_AWAKE:
1001 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1002 break;
1003 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1004 break;
1005 default:
1006 break;
1007 }
1008 }
1009
1010 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1011 struct ieee80211_vif *vif,
1012 struct ieee80211_sta *sta,
1013 enum ieee80211_sta_state old_state,
1014 enum ieee80211_sta_state new_state)
1015 {
1016 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1017 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1018 int ret;
1019
1020 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1021 sta->addr, old_state, new_state);
1022
1023 /* this would be a mac80211 bug ... but don't crash */
1024 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1025 return -EINVAL;
1026
1027 /* if a STA is being removed, reuse its ID */
1028 flush_work(&mvm->sta_drained_wk);
1029
1030 mutex_lock(&mvm->mutex);
1031 if (old_state == IEEE80211_STA_NOTEXIST &&
1032 new_state == IEEE80211_STA_NONE) {
1033 ret = iwl_mvm_add_sta(mvm, vif, sta);
1034 } else if (old_state == IEEE80211_STA_NONE &&
1035 new_state == IEEE80211_STA_AUTH) {
1036 ret = 0;
1037 } else if (old_state == IEEE80211_STA_AUTH &&
1038 new_state == IEEE80211_STA_ASSOC) {
1039 ret = iwl_mvm_update_sta(mvm, vif, sta);
1040 if (ret == 0)
1041 iwl_mvm_rs_rate_init(mvm, sta,
1042 mvmvif->phy_ctxt->channel->band);
1043 } else if (old_state == IEEE80211_STA_ASSOC &&
1044 new_state == IEEE80211_STA_AUTHORIZED) {
1045 /* enable beacon filtering */
1046 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1047 ret = 0;
1048 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1049 new_state == IEEE80211_STA_ASSOC) {
1050 /* disable beacon filtering */
1051 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1052 ret = 0;
1053 } else if (old_state == IEEE80211_STA_ASSOC &&
1054 new_state == IEEE80211_STA_AUTH) {
1055 ret = 0;
1056 } else if (old_state == IEEE80211_STA_AUTH &&
1057 new_state == IEEE80211_STA_NONE) {
1058 ret = 0;
1059 } else if (old_state == IEEE80211_STA_NONE &&
1060 new_state == IEEE80211_STA_NOTEXIST) {
1061 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1062 } else {
1063 ret = -EIO;
1064 }
1065 mutex_unlock(&mvm->mutex);
1066
1067 return ret;
1068 }
1069
1070 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1071 {
1072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073
1074 mvm->rts_threshold = value;
1075
1076 return 0;
1077 }
1078
1079 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1080 struct ieee80211_vif *vif, u16 ac,
1081 const struct ieee80211_tx_queue_params *params)
1082 {
1083 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1084 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1085
1086 mvmvif->queue_params[ac] = *params;
1087
1088 /*
1089 * No need to update right away, we'll get BSS_CHANGED_QOS
1090 * The exception is P2P_DEVICE interface which needs immediate update.
1091 */
1092 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1093 int ret;
1094
1095 mutex_lock(&mvm->mutex);
1096 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1097 mutex_unlock(&mvm->mutex);
1098 return ret;
1099 }
1100 return 0;
1101 }
1102
1103 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1104 struct ieee80211_vif *vif)
1105 {
1106 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1107 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1108 200 + vif->bss_conf.beacon_int);
1109 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1110 100 + vif->bss_conf.beacon_int);
1111
1112 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1113 return;
1114
1115 mutex_lock(&mvm->mutex);
1116 /* Try really hard to protect the session and hear a beacon */
1117 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1118 mutex_unlock(&mvm->mutex);
1119 }
1120
1121 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1122 enum set_key_cmd cmd,
1123 struct ieee80211_vif *vif,
1124 struct ieee80211_sta *sta,
1125 struct ieee80211_key_conf *key)
1126 {
1127 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1128 int ret;
1129
1130 if (iwlwifi_mod_params.sw_crypto) {
1131 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1132 return -EOPNOTSUPP;
1133 }
1134
1135 switch (key->cipher) {
1136 case WLAN_CIPHER_SUITE_TKIP:
1137 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1138 /* fall-through */
1139 case WLAN_CIPHER_SUITE_CCMP:
1140 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1141 break;
1142 case WLAN_CIPHER_SUITE_AES_CMAC:
1143 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1144 break;
1145 case WLAN_CIPHER_SUITE_WEP40:
1146 case WLAN_CIPHER_SUITE_WEP104:
1147 /*
1148 * Support for TX only, at least for now, so accept
1149 * the key and do nothing else. Then mac80211 will
1150 * pass it for TX but we don't have to use it for RX.
1151 */
1152 return 0;
1153 default:
1154 return -EOPNOTSUPP;
1155 }
1156
1157 mutex_lock(&mvm->mutex);
1158
1159 switch (cmd) {
1160 case SET_KEY:
1161 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1162 /* GTK on AP interface is a TX-only key, return 0 */
1163 ret = 0;
1164 key->hw_key_idx = STA_KEY_IDX_INVALID;
1165 break;
1166 }
1167
1168 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1169 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1170 if (ret) {
1171 IWL_WARN(mvm, "set key failed\n");
1172 /*
1173 * can't add key for RX, but we don't need it
1174 * in the device for TX so still return 0
1175 */
1176 key->hw_key_idx = STA_KEY_IDX_INVALID;
1177 ret = 0;
1178 }
1179
1180 break;
1181 case DISABLE_KEY:
1182 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1183 ret = 0;
1184 break;
1185 }
1186
1187 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1188 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1189 break;
1190 default:
1191 ret = -EINVAL;
1192 }
1193
1194 mutex_unlock(&mvm->mutex);
1195 return ret;
1196 }
1197
1198 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1199 struct ieee80211_vif *vif,
1200 struct ieee80211_key_conf *keyconf,
1201 struct ieee80211_sta *sta,
1202 u32 iv32, u16 *phase1key)
1203 {
1204 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1205
1206 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1207 }
1208
1209
1210 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1211 struct ieee80211_vif *vif,
1212 struct ieee80211_channel *channel,
1213 int duration,
1214 enum ieee80211_roc_type type)
1215 {
1216 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1218 struct cfg80211_chan_def chandef;
1219 struct iwl_mvm_phy_ctxt *phy_ctxt;
1220 int ret, i;
1221
1222 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1223 duration, type);
1224
1225 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1226 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1227 return -EINVAL;
1228 }
1229
1230 mutex_lock(&mvm->mutex);
1231
1232 for (i = 0; i < NUM_PHY_CTX; i++) {
1233 phy_ctxt = &mvm->phy_ctxts[i];
1234 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1235 continue;
1236
1237 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1238 /*
1239 * Unbind the P2P_DEVICE from the current PHY context,
1240 * and if the PHY context is not used remove it.
1241 */
1242 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1243 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1244 goto out_unlock;
1245
1246 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1247
1248 /* Bind the P2P_DEVICE to the current PHY Context */
1249 mvmvif->phy_ctxt = phy_ctxt;
1250
1251 ret = iwl_mvm_binding_add_vif(mvm, vif);
1252 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1253 goto out_unlock;
1254
1255 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1256 goto schedule_time_event;
1257 }
1258 }
1259
1260 /* Need to update the PHY context only if the ROC channel changed */
1261 if (channel == mvmvif->phy_ctxt->channel)
1262 goto schedule_time_event;
1263
1264 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1265
1266 /*
1267 * Change the PHY context configuration as it is currently referenced
1268 * only by the P2P Device MAC
1269 */
1270 if (mvmvif->phy_ctxt->ref == 1) {
1271 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1272 &chandef, 1, 1);
1273 if (ret)
1274 goto out_unlock;
1275 } else {
1276 /*
1277 * The PHY context is shared with other MACs. Need to remove the
1278 * P2P Device from the binding, allocate an new PHY context and
1279 * create a new binding
1280 */
1281 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1282 if (!phy_ctxt) {
1283 ret = -ENOSPC;
1284 goto out_unlock;
1285 }
1286
1287 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1288 1, 1);
1289 if (ret) {
1290 IWL_ERR(mvm, "Failed to change PHY context\n");
1291 goto out_unlock;
1292 }
1293
1294 /* Unbind the P2P_DEVICE from the current PHY context */
1295 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1296 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1297 goto out_unlock;
1298
1299 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1300
1301 /* Bind the P2P_DEVICE to the new allocated PHY context */
1302 mvmvif->phy_ctxt = phy_ctxt;
1303
1304 ret = iwl_mvm_binding_add_vif(mvm, vif);
1305 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1306 goto out_unlock;
1307
1308 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1309 }
1310
1311 schedule_time_event:
1312 /* Schedule the time events */
1313 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1314
1315 out_unlock:
1316 mutex_unlock(&mvm->mutex);
1317 IWL_DEBUG_MAC80211(mvm, "leave\n");
1318 return ret;
1319 }
1320
1321 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1322 {
1323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1324
1325 IWL_DEBUG_MAC80211(mvm, "enter\n");
1326
1327 mutex_lock(&mvm->mutex);
1328 iwl_mvm_stop_p2p_roc(mvm);
1329 mutex_unlock(&mvm->mutex);
1330
1331 IWL_DEBUG_MAC80211(mvm, "leave\n");
1332 return 0;
1333 }
1334
1335 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1336 struct ieee80211_chanctx_conf *ctx)
1337 {
1338 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1339 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1340 struct iwl_mvm_phy_ctxt *phy_ctxt;
1341 int ret;
1342
1343 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1344
1345 mutex_lock(&mvm->mutex);
1346 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1347 if (!phy_ctxt) {
1348 ret = -ENOSPC;
1349 goto out;
1350 }
1351
1352 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1353 ctx->rx_chains_static,
1354 ctx->rx_chains_dynamic);
1355 if (ret) {
1356 IWL_ERR(mvm, "Failed to add PHY context\n");
1357 goto out;
1358 }
1359
1360 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1361 *phy_ctxt_id = phy_ctxt->id;
1362 out:
1363 mutex_unlock(&mvm->mutex);
1364 return ret;
1365 }
1366
1367 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1368 struct ieee80211_chanctx_conf *ctx)
1369 {
1370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1371 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1372 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1373
1374 mutex_lock(&mvm->mutex);
1375 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1376 mutex_unlock(&mvm->mutex);
1377 }
1378
1379 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1380 struct ieee80211_chanctx_conf *ctx,
1381 u32 changed)
1382 {
1383 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1384 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1385 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1386
1387 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1388 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1389 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1390 IEEE80211_CHANCTX_CHANGE_RADAR)),
1391 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1392 phy_ctxt->ref, changed))
1393 return;
1394
1395 mutex_lock(&mvm->mutex);
1396 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1397 ctx->rx_chains_static,
1398 ctx->rx_chains_dynamic);
1399 mutex_unlock(&mvm->mutex);
1400 }
1401
1402 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1403 struct ieee80211_vif *vif,
1404 struct ieee80211_chanctx_conf *ctx)
1405 {
1406 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1407 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1408 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1409 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1410 int ret;
1411
1412 mutex_lock(&mvm->mutex);
1413
1414 mvmvif->phy_ctxt = phy_ctxt;
1415
1416 switch (vif->type) {
1417 case NL80211_IFTYPE_AP:
1418 /*
1419 * The AP binding flow is handled as part of the start_ap flow
1420 * (in bss_info_changed).
1421 */
1422 ret = 0;
1423 goto out_unlock;
1424 case NL80211_IFTYPE_STATION:
1425 case NL80211_IFTYPE_ADHOC:
1426 case NL80211_IFTYPE_MONITOR:
1427 break;
1428 default:
1429 ret = -EINVAL;
1430 goto out_unlock;
1431 }
1432
1433 ret = iwl_mvm_binding_add_vif(mvm, vif);
1434 if (ret)
1435 goto out_unlock;
1436
1437 /*
1438 * Setting the quota at this stage is only required for monitor
1439 * interfaces. For the other types, the bss_info changed flow
1440 * will handle quota settings.
1441 */
1442 if (vif->type == NL80211_IFTYPE_MONITOR) {
1443 mvmvif->monitor_active = true;
1444 ret = iwl_mvm_update_quotas(mvm, vif);
1445 if (ret)
1446 goto out_remove_binding;
1447 }
1448
1449 goto out_unlock;
1450
1451 out_remove_binding:
1452 iwl_mvm_binding_remove_vif(mvm, vif);
1453 out_unlock:
1454 mutex_unlock(&mvm->mutex);
1455 if (ret)
1456 mvmvif->phy_ctxt = NULL;
1457 return ret;
1458 }
1459
1460 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1461 struct ieee80211_vif *vif,
1462 struct ieee80211_chanctx_conf *ctx)
1463 {
1464 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1465 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1466
1467 mutex_lock(&mvm->mutex);
1468
1469 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1470
1471 if (vif->type == NL80211_IFTYPE_AP)
1472 goto out_unlock;
1473
1474 switch (vif->type) {
1475 case NL80211_IFTYPE_MONITOR:
1476 mvmvif->monitor_active = false;
1477 iwl_mvm_update_quotas(mvm, NULL);
1478 break;
1479 default:
1480 break;
1481 }
1482
1483 iwl_mvm_binding_remove_vif(mvm, vif);
1484 out_unlock:
1485 mvmvif->phy_ctxt = NULL;
1486 mutex_unlock(&mvm->mutex);
1487 }
1488
1489 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1490 struct ieee80211_sta *sta,
1491 bool set)
1492 {
1493 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1494 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1495
1496 if (!mvm_sta || !mvm_sta->vif) {
1497 IWL_ERR(mvm, "Station is not associated to a vif\n");
1498 return -EINVAL;
1499 }
1500
1501 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1502 }
1503
1504 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1505 struct ieee80211_vif *vif,
1506 enum ieee80211_rssi_event rssi_event)
1507 {
1508 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1509
1510 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1511 }
1512
1513 struct ieee80211_ops iwl_mvm_hw_ops = {
1514 .tx = iwl_mvm_mac_tx,
1515 .ampdu_action = iwl_mvm_mac_ampdu_action,
1516 .start = iwl_mvm_mac_start,
1517 .restart_complete = iwl_mvm_mac_restart_complete,
1518 .stop = iwl_mvm_mac_stop,
1519 .add_interface = iwl_mvm_mac_add_interface,
1520 .remove_interface = iwl_mvm_mac_remove_interface,
1521 .config = iwl_mvm_mac_config,
1522 .configure_filter = iwl_mvm_configure_filter,
1523 .bss_info_changed = iwl_mvm_bss_info_changed,
1524 .hw_scan = iwl_mvm_mac_hw_scan,
1525 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1526 .sta_state = iwl_mvm_mac_sta_state,
1527 .sta_notify = iwl_mvm_mac_sta_notify,
1528 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1529 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1530 .conf_tx = iwl_mvm_mac_conf_tx,
1531 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1532 .set_key = iwl_mvm_mac_set_key,
1533 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1534 .remain_on_channel = iwl_mvm_roc,
1535 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1536 .rssi_callback = iwl_mvm_mac_rssi_callback,
1537
1538 .add_chanctx = iwl_mvm_add_chanctx,
1539 .remove_chanctx = iwl_mvm_remove_chanctx,
1540 .change_chanctx = iwl_mvm_change_chanctx,
1541 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1542 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1543
1544 .start_ap = iwl_mvm_start_ap,
1545 .stop_ap = iwl_mvm_stop_ap,
1546
1547 .set_tim = iwl_mvm_set_tim,
1548
1549 #ifdef CONFIG_PM_SLEEP
1550 /* look at d3.c */
1551 .suspend = iwl_mvm_suspend,
1552 .resume = iwl_mvm_resume,
1553 .set_wakeup = iwl_mvm_set_wakeup,
1554 .set_rekey_data = iwl_mvm_set_rekey_data,
1555 #if IS_ENABLED(CONFIG_IPV6)
1556 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1557 #endif
1558 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1559 #endif
1560 };
Linus' kernel tree