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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 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 - 2014 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 #include "testmode.h"
81
82 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
83 {
84 .max = 1,
85 .types = BIT(NL80211_IFTYPE_STATION),
86 },
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_AP) |
90 BIT(NL80211_IFTYPE_P2P_CLIENT) |
91 BIT(NL80211_IFTYPE_P2P_GO),
92 },
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
96 },
97 };
98
99 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
100 {
101 .num_different_channels = 1,
102 .max_interfaces = 3,
103 .limits = iwl_mvm_limits,
104 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
105 },
106 };
107
108 #ifdef CONFIG_PM_SLEEP
109 static const struct nl80211_wowlan_tcp_data_token_feature
110 iwl_mvm_wowlan_tcp_token_feature = {
111 .min_len = 0,
112 .max_len = 255,
113 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
114 };
115
116 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
117 .tok = &iwl_mvm_wowlan_tcp_token_feature,
118 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
119 sizeof(struct ethhdr) -
120 sizeof(struct iphdr) -
121 sizeof(struct tcphdr),
122 .data_interval_max = 65535, /* __le16 in API */
123 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
124 sizeof(struct ethhdr) -
125 sizeof(struct iphdr) -
126 sizeof(struct tcphdr),
127 .seq = true,
128 };
129 #endif
130
131 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
132 {
133 int i;
134
135 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
136 for (i = 0; i < NUM_PHY_CTX; i++) {
137 mvm->phy_ctxts[i].id = i;
138 mvm->phy_ctxts[i].ref = 0;
139 }
140 }
141
142 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
143 {
144 /* we create the 802.11 header and SSID element */
145 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
146 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
147 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
148 }
149
150 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
151 {
152 struct ieee80211_hw *hw = mvm->hw;
153 int num_mac, ret, i;
154
155 /* Tell mac80211 our characteristics */
156 hw->flags = IEEE80211_HW_SIGNAL_DBM |
157 IEEE80211_HW_SPECTRUM_MGMT |
158 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
159 IEEE80211_HW_QUEUE_CONTROL |
160 IEEE80211_HW_WANT_MONITOR_VIF |
161 IEEE80211_HW_SUPPORTS_PS |
162 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
163 IEEE80211_HW_AMPDU_AGGREGATION |
164 IEEE80211_HW_TIMING_BEACON_ONLY |
165 IEEE80211_HW_CONNECTION_MONITOR |
166 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
167 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
168
169 hw->queues = mvm->first_agg_queue;
170 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
171 hw->rate_control_algorithm = "iwl-mvm-rs";
172
173 /*
174 * Enable 11w if advertised by firmware and software crypto
175 * is not enabled (as the firmware will interpret some mgmt
176 * packets, so enabling it with software crypto isn't safe)
177 */
178 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
179 !iwlwifi_mod_params.sw_crypto)
180 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
181
182 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
183 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
184 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
185 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
186 }
187
188 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
189 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
190 hw->chanctx_data_size = sizeof(u16);
191
192 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
193 BIT(NL80211_IFTYPE_P2P_CLIENT) |
194 BIT(NL80211_IFTYPE_AP) |
195 BIT(NL80211_IFTYPE_P2P_GO) |
196 BIT(NL80211_IFTYPE_P2P_DEVICE);
197
198 /* IBSS has bugs in older versions */
199 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8)
200 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
201
202 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
203 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
204 REGULATORY_DISABLE_BEACON_HINTS;
205
206 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
207 hw->wiphy->n_iface_combinations =
208 ARRAY_SIZE(iwl_mvm_iface_combinations);
209
210 hw->wiphy->max_remain_on_channel_duration = 10000;
211 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
212
213 /* Extract MAC address */
214 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
215 hw->wiphy->addresses = mvm->addresses;
216 hw->wiphy->n_addresses = 1;
217
218 /* Extract additional MAC addresses if available */
219 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
220 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
221
222 for (i = 1; i < num_mac; i++) {
223 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
224 ETH_ALEN);
225 mvm->addresses[i].addr[5]++;
226 hw->wiphy->n_addresses++;
227 }
228
229 iwl_mvm_reset_phy_ctxts(mvm);
230
231 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
232
233 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
234
235 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
236 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
237 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
238 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
239 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
240 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
241
242 hw->wiphy->hw_version = mvm->trans->hw_id;
243
244 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
245 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
246 else
247 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
248
249 if (0 && mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
250 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
251 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
252 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
253 /* we create the 802.11 header and zero length SSID IE. */
254 hw->wiphy->max_sched_scan_ie_len =
255 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
256 }
257
258 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
259 NL80211_FEATURE_P2P_GO_OPPPS |
260 NL80211_FEATURE_LOW_PRIORITY_SCAN;
261
262 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
263
264 /* currently FW API supports only one optional cipher scheme */
265 if (mvm->fw->cs[0].cipher) {
266 mvm->hw->n_cipher_schemes = 1;
267 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
268 }
269
270 #ifdef CONFIG_PM_SLEEP
271 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
272 mvm->trans->ops->d3_suspend &&
273 mvm->trans->ops->d3_resume &&
274 device_can_wakeup(mvm->trans->dev)) {
275 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
276 WIPHY_WOWLAN_DISCONNECT |
277 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
278 WIPHY_WOWLAN_RFKILL_RELEASE;
279 if (!iwlwifi_mod_params.sw_crypto)
280 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
281 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
282 WIPHY_WOWLAN_4WAY_HANDSHAKE;
283
284 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
285 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
286 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
287 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
288 hw->wiphy->wowlan = &mvm->wowlan;
289 }
290 #endif
291
292 ret = iwl_mvm_leds_init(mvm);
293 if (ret)
294 return ret;
295
296 ret = ieee80211_register_hw(mvm->hw);
297 if (ret)
298 iwl_mvm_leds_exit(mvm);
299
300 return ret;
301 }
302
303 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
304 struct ieee80211_tx_control *control,
305 struct sk_buff *skb)
306 {
307 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
308
309 if (iwl_mvm_is_radio_killed(mvm)) {
310 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
311 goto drop;
312 }
313
314 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
315 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
316 goto drop;
317
318 if (control->sta) {
319 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
320 goto drop;
321 return;
322 }
323
324 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
325 goto drop;
326 return;
327 drop:
328 ieee80211_free_txskb(hw, skb);
329 }
330
331 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
332 {
333 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
334 return false;
335 return true;
336 }
337
338 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
339 {
340 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
341 return false;
342 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
343 return true;
344
345 /* enabled by default */
346 return true;
347 }
348
349 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
350 struct ieee80211_vif *vif,
351 enum ieee80211_ampdu_mlme_action action,
352 struct ieee80211_sta *sta, u16 tid,
353 u16 *ssn, u8 buf_size)
354 {
355 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
356 int ret;
357
358 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
359 sta->addr, tid, action);
360
361 if (!(mvm->nvm_data->sku_cap_11n_enable))
362 return -EACCES;
363
364 mutex_lock(&mvm->mutex);
365
366 switch (action) {
367 case IEEE80211_AMPDU_RX_START:
368 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
369 ret = -EINVAL;
370 break;
371 }
372 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
373 break;
374 case IEEE80211_AMPDU_RX_STOP:
375 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
376 break;
377 case IEEE80211_AMPDU_TX_START:
378 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
379 ret = -EINVAL;
380 break;
381 }
382 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
383 break;
384 case IEEE80211_AMPDU_TX_STOP_CONT:
385 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
386 break;
387 case IEEE80211_AMPDU_TX_STOP_FLUSH:
388 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
389 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
390 break;
391 case IEEE80211_AMPDU_TX_OPERATIONAL:
392 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
393 break;
394 default:
395 WARN_ON_ONCE(1);
396 ret = -EINVAL;
397 break;
398 }
399 mutex_unlock(&mvm->mutex);
400
401 return ret;
402 }
403
404 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
405 struct ieee80211_vif *vif)
406 {
407 struct iwl_mvm *mvm = data;
408 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
409
410 mvmvif->uploaded = false;
411 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
412
413 /* does this make sense at all? */
414 mvmvif->color++;
415
416 spin_lock_bh(&mvm->time_event_lock);
417 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
418 spin_unlock_bh(&mvm->time_event_lock);
419
420 mvmvif->phy_ctxt = NULL;
421 }
422
423 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
424 {
425 iwl_trans_stop_device(mvm->trans);
426
427 mvm->scan_status = IWL_MVM_SCAN_NONE;
428
429 /* just in case one was running */
430 ieee80211_remain_on_channel_expired(mvm->hw);
431
432 ieee80211_iterate_active_interfaces_atomic(
433 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
434 iwl_mvm_cleanup_iterator, mvm);
435
436 mvm->p2p_device_vif = NULL;
437
438 iwl_mvm_reset_phy_ctxts(mvm);
439 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
440 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
441
442 ieee80211_wake_queues(mvm->hw);
443
444 mvm->vif_count = 0;
445 mvm->rx_ba_sessions = 0;
446 }
447
448 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
449 {
450 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
451 int ret;
452
453 mutex_lock(&mvm->mutex);
454
455 /* Clean up some internal and mac80211 state on restart */
456 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
457 iwl_mvm_restart_cleanup(mvm);
458
459 ret = iwl_mvm_up(mvm);
460 mutex_unlock(&mvm->mutex);
461
462 return ret;
463 }
464
465 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
466 {
467 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
468 int ret;
469
470 mutex_lock(&mvm->mutex);
471
472 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
473 ret = iwl_mvm_update_quotas(mvm, NULL);
474 if (ret)
475 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
476 ret);
477
478 mutex_unlock(&mvm->mutex);
479 }
480
481 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
482 {
483 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
484
485 flush_work(&mvm->async_handlers_wk);
486
487 mutex_lock(&mvm->mutex);
488 /* async_handlers_wk is now blocked */
489
490 /*
491 * The work item could be running or queued if the
492 * ROC time event stops just as we get here.
493 */
494 cancel_work_sync(&mvm->roc_done_wk);
495
496 iwl_trans_stop_device(mvm->trans);
497
498 iwl_mvm_async_handlers_purge(mvm);
499 /* async_handlers_list is empty and will stay empty: HW is stopped */
500
501 /* the fw is stopped, the aux sta is dead: clean up driver state */
502 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
503
504 mutex_unlock(&mvm->mutex);
505
506 /*
507 * The worker might have been waiting for the mutex, let it run and
508 * discover that its list is now empty.
509 */
510 cancel_work_sync(&mvm->async_handlers_wk);
511 }
512
513 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
514 struct ieee80211_vif *vif)
515 {
516 struct iwl_mvm *mvm = data;
517
518 iwl_mvm_power_update_mode(mvm, vif);
519 }
520
521 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
522 {
523 u16 i;
524
525 lockdep_assert_held(&mvm->mutex);
526
527 for (i = 0; i < NUM_PHY_CTX; i++)
528 if (!mvm->phy_ctxts[i].ref)
529 return &mvm->phy_ctxts[i];
530
531 IWL_ERR(mvm, "No available PHY context\n");
532 return NULL;
533 }
534
535 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
536 s8 tx_power)
537 {
538 /* FW is in charge of regulatory enforcement */
539 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
540 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
541 .pwr_restriction = cpu_to_le16(tx_power),
542 };
543
544 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
545 sizeof(reduce_txpwr_cmd),
546 &reduce_txpwr_cmd);
547 }
548
549 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
550 struct ieee80211_vif *vif)
551 {
552 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
554 int ret;
555
556 /*
557 * Not much to do here. The stack will not allow interface
558 * types or combinations that we didn't advertise, so we
559 * don't really have to check the types.
560 */
561
562 mutex_lock(&mvm->mutex);
563
564 /* Allocate resources for the MAC context, and add it to the fw */
565 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
566 if (ret)
567 goto out_unlock;
568
569 /* Counting number of interfaces is needed for legacy PM */
570 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
571 mvm->vif_count++;
572
573 /*
574 * The AP binding flow can be done only after the beacon
575 * template is configured (which happens only in the mac80211
576 * start_ap() flow), and adding the broadcast station can happen
577 * only after the binding.
578 * In addition, since modifying the MAC before adding a bcast
579 * station is not allowed by the FW, delay the adding of MAC context to
580 * the point where we can also add the bcast station.
581 * In short: there's not much we can do at this point, other than
582 * allocating resources :)
583 */
584 if (vif->type == NL80211_IFTYPE_AP ||
585 vif->type == NL80211_IFTYPE_ADHOC) {
586 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
587 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
588 qmask);
589 if (ret) {
590 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
591 goto out_release;
592 }
593
594 iwl_mvm_vif_dbgfs_register(mvm, vif);
595 goto out_unlock;
596 }
597
598 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
599 if (ret)
600 goto out_release;
601
602 iwl_mvm_power_disable(mvm, vif);
603
604 /* beacon filtering */
605 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
606 if (ret)
607 goto out_remove_mac;
608
609 if (!mvm->bf_allowed_vif &&
610 vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
611 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED){
612 mvm->bf_allowed_vif = mvmvif;
613 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
614 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
615 }
616
617 /*
618 * P2P_DEVICE interface does not have a channel context assigned to it,
619 * so a dedicated PHY context is allocated to it and the corresponding
620 * MAC context is bound to it at this stage.
621 */
622 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
623
624 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
625 if (!mvmvif->phy_ctxt) {
626 ret = -ENOSPC;
627 goto out_free_bf;
628 }
629
630 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
631 ret = iwl_mvm_binding_add_vif(mvm, vif);
632 if (ret)
633 goto out_unref_phy;
634
635 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
636 if (ret)
637 goto out_unbind;
638
639 /* Save a pointer to p2p device vif, so it can later be used to
640 * update the p2p device MAC when a GO is started/stopped */
641 mvm->p2p_device_vif = vif;
642 }
643
644 iwl_mvm_vif_dbgfs_register(mvm, vif);
645 goto out_unlock;
646
647 out_unbind:
648 iwl_mvm_binding_remove_vif(mvm, vif);
649 out_unref_phy:
650 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
651 out_free_bf:
652 if (mvm->bf_allowed_vif == mvmvif) {
653 mvm->bf_allowed_vif = NULL;
654 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
655 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
656 }
657 out_remove_mac:
658 mvmvif->phy_ctxt = NULL;
659 iwl_mvm_mac_ctxt_remove(mvm, vif);
660 out_release:
661 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
662 mvm->vif_count--;
663
664 /* TODO: remove this when legacy PM will be discarded */
665 ieee80211_iterate_active_interfaces(
666 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
667 iwl_mvm_power_update_iterator, mvm);
668
669 iwl_mvm_mac_ctxt_release(mvm, vif);
670 out_unlock:
671 mutex_unlock(&mvm->mutex);
672
673 return ret;
674 }
675
676 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
677 struct ieee80211_vif *vif)
678 {
679 u32 tfd_msk = 0, ac;
680
681 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
682 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
683 tfd_msk |= BIT(vif->hw_queue[ac]);
684
685 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
686 tfd_msk |= BIT(vif->cab_queue);
687
688 if (tfd_msk) {
689 mutex_lock(&mvm->mutex);
690 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
691 mutex_unlock(&mvm->mutex);
692 }
693
694 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
695 /*
696 * Flush the ROC worker which will flush the OFFCHANNEL queue.
697 * We assume here that all the packets sent to the OFFCHANNEL
698 * queue are sent in ROC session.
699 */
700 flush_work(&mvm->roc_done_wk);
701 } else {
702 /*
703 * By now, all the AC queues are empty. The AGG queues are
704 * empty too. We already got all the Tx responses for all the
705 * packets in the queues. The drain work can have been
706 * triggered. Flush it.
707 */
708 flush_work(&mvm->sta_drained_wk);
709 }
710 }
711
712 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
713 struct ieee80211_vif *vif)
714 {
715 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
716 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
717
718 iwl_mvm_prepare_mac_removal(mvm, vif);
719
720 mutex_lock(&mvm->mutex);
721
722 if (mvm->bf_allowed_vif == mvmvif) {
723 mvm->bf_allowed_vif = NULL;
724 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
725 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
726 }
727
728 iwl_mvm_vif_dbgfs_clean(mvm, vif);
729
730 /*
731 * For AP/GO interface, the tear down of the resources allocated to the
732 * interface is be handled as part of the stop_ap flow.
733 */
734 if (vif->type == NL80211_IFTYPE_AP ||
735 vif->type == NL80211_IFTYPE_ADHOC) {
736 #ifdef CONFIG_NL80211_TESTMODE
737 if (vif == mvm->noa_vif) {
738 mvm->noa_vif = NULL;
739 mvm->noa_duration = 0;
740 }
741 #endif
742 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
743 goto out_release;
744 }
745
746 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
747 mvm->p2p_device_vif = NULL;
748 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
749 iwl_mvm_binding_remove_vif(mvm, vif);
750 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
751 mvmvif->phy_ctxt = NULL;
752 }
753
754 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
755 mvm->vif_count--;
756
757 /* TODO: remove this when legacy PM will be discarded */
758 ieee80211_iterate_active_interfaces(
759 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
760 iwl_mvm_power_update_iterator, mvm);
761
762 iwl_mvm_mac_ctxt_remove(mvm, vif);
763
764 out_release:
765 iwl_mvm_mac_ctxt_release(mvm, vif);
766 mutex_unlock(&mvm->mutex);
767 }
768
769 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
770 {
771 return 0;
772 }
773
774 struct iwl_mvm_mc_iter_data {
775 struct iwl_mvm *mvm;
776 int port_id;
777 };
778
779 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
780 struct ieee80211_vif *vif)
781 {
782 struct iwl_mvm_mc_iter_data *data = _data;
783 struct iwl_mvm *mvm = data->mvm;
784 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
785 int ret, len;
786
787 /* if we don't have free ports, mcast frames will be dropped */
788 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
789 return;
790
791 if (vif->type != NL80211_IFTYPE_STATION ||
792 !vif->bss_conf.assoc)
793 return;
794
795 cmd->port_id = data->port_id++;
796 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
797 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
798
799 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
800 if (ret)
801 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
802 }
803
804 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
805 {
806 struct iwl_mvm_mc_iter_data iter_data = {
807 .mvm = mvm,
808 };
809
810 lockdep_assert_held(&mvm->mutex);
811
812 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
813 return;
814
815 ieee80211_iterate_active_interfaces(
816 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
817 iwl_mvm_mc_iface_iterator, &iter_data);
818 }
819
820 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
821 struct netdev_hw_addr_list *mc_list)
822 {
823 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
824 struct iwl_mcast_filter_cmd *cmd;
825 struct netdev_hw_addr *addr;
826 int addr_count = netdev_hw_addr_list_count(mc_list);
827 bool pass_all = false;
828 int len;
829
830 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
831 pass_all = true;
832 addr_count = 0;
833 }
834
835 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
836 cmd = kzalloc(len, GFP_ATOMIC);
837 if (!cmd)
838 return 0;
839
840 if (pass_all) {
841 cmd->pass_all = 1;
842 return (u64)(unsigned long)cmd;
843 }
844
845 netdev_hw_addr_list_for_each(addr, mc_list) {
846 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
847 cmd->count, addr->addr);
848 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
849 addr->addr, ETH_ALEN);
850 cmd->count++;
851 }
852
853 return (u64)(unsigned long)cmd;
854 }
855
856 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
857 unsigned int changed_flags,
858 unsigned int *total_flags,
859 u64 multicast)
860 {
861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
862 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
863
864 mutex_lock(&mvm->mutex);
865
866 /* replace previous configuration */
867 kfree(mvm->mcast_filter_cmd);
868 mvm->mcast_filter_cmd = cmd;
869
870 if (!cmd)
871 goto out;
872
873 iwl_mvm_recalc_multicast(mvm);
874 out:
875 mutex_unlock(&mvm->mutex);
876 *total_flags = 0;
877 }
878
879 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
880 struct ieee80211_vif *vif,
881 struct ieee80211_bss_conf *bss_conf,
882 u32 changes)
883 {
884 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
885 int ret;
886
887 /*
888 * Re-calculate the tsf id, as the master-slave relations depend on the
889 * beacon interval, which was not known when the station interface was
890 * added.
891 */
892 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
893 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
894
895 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
896 if (ret)
897 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
898
899 if (changes & BSS_CHANGED_ASSOC) {
900 if (bss_conf->assoc) {
901 /* add quota for this interface */
902 ret = iwl_mvm_update_quotas(mvm, vif);
903 if (ret) {
904 IWL_ERR(mvm, "failed to update quotas\n");
905 return;
906 }
907
908 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
909 &mvm->status)) {
910 /*
911 * If we're restarting then the firmware will
912 * obviously have lost synchronisation with
913 * the AP. It will attempt to synchronise by
914 * itself, but we can make it more reliable by
915 * scheduling a session protection time event.
916 *
917 * The firmware needs to receive a beacon to
918 * catch up with synchronisation, use 110% of
919 * the beacon interval.
920 *
921 * Set a large maximum delay to allow for more
922 * than a single interface.
923 */
924 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
925 iwl_mvm_protect_session(mvm, vif, dur, dur,
926 5 * dur);
927 }
928
929 iwl_mvm_sf_update(mvm, vif, false);
930 iwl_mvm_power_vif_assoc(mvm, vif);
931 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
932 /*
933 * If update fails - SF might be running in associated
934 * mode while disassociated - which is forbidden.
935 */
936 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
937 "Failed to update SF upon disassociation\n");
938
939 /* remove AP station now that the MAC is unassoc */
940 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
941 if (ret)
942 IWL_ERR(mvm, "failed to remove AP station\n");
943 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
944 /* remove quota for this interface */
945 ret = iwl_mvm_update_quotas(mvm, NULL);
946 if (ret)
947 IWL_ERR(mvm, "failed to update quotas\n");
948 }
949
950 iwl_mvm_recalc_multicast(mvm);
951
952 /* reset rssi values */
953 mvmvif->bf_data.ave_beacon_signal = 0;
954
955 if (!(mvm->fw->ucode_capa.flags &
956 IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)) {
957 /* Workaround for FW bug, otherwise FW disables device
958 * power save upon disassociation
959 */
960 ret = iwl_mvm_power_update_mode(mvm, vif);
961 if (ret)
962 IWL_ERR(mvm, "failed to update power mode\n");
963 }
964 iwl_mvm_bt_coex_vif_change(mvm);
965 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
966 IEEE80211_SMPS_AUTOMATIC);
967 } else if (changes & BSS_CHANGED_BEACON_INFO) {
968 /*
969 * We received a beacon _after_ association so
970 * remove the session protection.
971 */
972 iwl_mvm_remove_time_event(mvm, mvmvif,
973 &mvmvif->time_event_data);
974 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
975 BSS_CHANGED_QOS)) {
976 ret = iwl_mvm_power_update_mode(mvm, vif);
977 if (ret)
978 IWL_ERR(mvm, "failed to update power mode\n");
979 }
980 if (changes & BSS_CHANGED_TXPOWER) {
981 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
982 bss_conf->txpower);
983 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
984 }
985
986 if (changes & BSS_CHANGED_CQM) {
987 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
988 /* reset cqm events tracking */
989 mvmvif->bf_data.last_cqm_event = 0;
990 ret = iwl_mvm_update_beacon_filter(mvm, vif);
991 if (ret)
992 IWL_ERR(mvm, "failed to update CQM thresholds\n");
993 }
994 }
995
996 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
997 struct ieee80211_vif *vif)
998 {
999 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1000 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1001 int ret;
1002
1003 mutex_lock(&mvm->mutex);
1004
1005 /* Send the beacon template */
1006 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1007 if (ret)
1008 goto out_unlock;
1009
1010 /*
1011 * Re-calculate the tsf id, as the master-slave relations depend on the
1012 * beacon interval, which was not known when the AP interface was added.
1013 */
1014 if (vif->type == NL80211_IFTYPE_AP)
1015 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1016
1017 /* Add the mac context */
1018 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1019 if (ret)
1020 goto out_unlock;
1021
1022 /* Perform the binding */
1023 ret = iwl_mvm_binding_add_vif(mvm, vif);
1024 if (ret)
1025 goto out_remove;
1026
1027 mvmvif->ap_ibss_active = true;
1028
1029 /* Send the bcast station. At this stage the TBTT and DTIM time events
1030 * are added and applied to the scheduler */
1031 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1032 if (ret)
1033 goto out_unbind;
1034
1035 /* must be set before quota calculations */
1036 mvmvif->ap_ibss_active = true;
1037
1038 /* power updated needs to be done before quotas */
1039 mvm->bound_vif_cnt++;
1040 iwl_mvm_power_update_binding(mvm, vif, true);
1041
1042 ret = iwl_mvm_update_quotas(mvm, vif);
1043 if (ret)
1044 goto out_quota_failed;
1045
1046 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1047 if (vif->p2p && mvm->p2p_device_vif)
1048 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1049
1050 iwl_mvm_bt_coex_vif_change(mvm);
1051
1052 mutex_unlock(&mvm->mutex);
1053 return 0;
1054
1055 out_quota_failed:
1056 mvm->bound_vif_cnt--;
1057 iwl_mvm_power_update_binding(mvm, vif, false);
1058 mvmvif->ap_ibss_active = false;
1059 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1060 out_unbind:
1061 iwl_mvm_binding_remove_vif(mvm, vif);
1062 out_remove:
1063 iwl_mvm_mac_ctxt_remove(mvm, vif);
1064 out_unlock:
1065 mutex_unlock(&mvm->mutex);
1066 return ret;
1067 }
1068
1069 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1070 struct ieee80211_vif *vif)
1071 {
1072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1074
1075 iwl_mvm_prepare_mac_removal(mvm, vif);
1076
1077 mutex_lock(&mvm->mutex);
1078
1079 mvmvif->ap_ibss_active = false;
1080
1081 iwl_mvm_bt_coex_vif_change(mvm);
1082
1083 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1084 if (vif->p2p && mvm->p2p_device_vif)
1085 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1086
1087 iwl_mvm_update_quotas(mvm, NULL);
1088 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1089 iwl_mvm_binding_remove_vif(mvm, vif);
1090
1091 mvm->bound_vif_cnt--;
1092 iwl_mvm_power_update_binding(mvm, vif, false);
1093
1094 iwl_mvm_mac_ctxt_remove(mvm, vif);
1095
1096 mutex_unlock(&mvm->mutex);
1097 }
1098
1099 static void
1100 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1101 struct ieee80211_vif *vif,
1102 struct ieee80211_bss_conf *bss_conf,
1103 u32 changes)
1104 {
1105 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1106 enum ieee80211_bss_change ht_change = BSS_CHANGED_ERP_CTS_PROT |
1107 BSS_CHANGED_HT |
1108 BSS_CHANGED_BANDWIDTH;
1109 int ret;
1110
1111 /* Changes will be applied when the AP/IBSS is started */
1112 if (!mvmvif->ap_ibss_active)
1113 return;
1114
1115 if (changes & ht_change) {
1116 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1117 if (ret)
1118 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1119 }
1120
1121 /* Need to send a new beacon template to the FW */
1122 if (changes & BSS_CHANGED_BEACON) {
1123 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1124 IWL_WARN(mvm, "Failed updating beacon data\n");
1125 }
1126 }
1127
1128 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1129 struct ieee80211_vif *vif,
1130 struct ieee80211_bss_conf *bss_conf,
1131 u32 changes)
1132 {
1133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1134
1135 mutex_lock(&mvm->mutex);
1136
1137 switch (vif->type) {
1138 case NL80211_IFTYPE_STATION:
1139 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1140 break;
1141 case NL80211_IFTYPE_AP:
1142 case NL80211_IFTYPE_ADHOC:
1143 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1144 break;
1145 default:
1146 /* shouldn't happen */
1147 WARN_ON_ONCE(1);
1148 }
1149
1150 mutex_unlock(&mvm->mutex);
1151 }
1152
1153 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1154 struct ieee80211_vif *vif,
1155 struct cfg80211_scan_request *req)
1156 {
1157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1158 int ret;
1159
1160 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1161 return -EINVAL;
1162
1163 mutex_lock(&mvm->mutex);
1164
1165 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
1166 ret = iwl_mvm_scan_request(mvm, vif, req);
1167 else
1168 ret = -EBUSY;
1169
1170 mutex_unlock(&mvm->mutex);
1171
1172 return ret;
1173 }
1174
1175 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1176 struct ieee80211_vif *vif)
1177 {
1178 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180 mutex_lock(&mvm->mutex);
1181
1182 iwl_mvm_cancel_scan(mvm);
1183
1184 mutex_unlock(&mvm->mutex);
1185 }
1186
1187 static void
1188 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1189 struct ieee80211_sta *sta, u16 tid,
1190 int num_frames,
1191 enum ieee80211_frame_release_type reason,
1192 bool more_data)
1193 {
1194 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1195
1196 /* TODO: how do we tell the fw to send frames for a specific TID */
1197
1198 /*
1199 * The fw will send EOSP notification when the last frame will be
1200 * transmitted.
1201 */
1202 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
1203 }
1204
1205 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1206 struct ieee80211_vif *vif,
1207 enum sta_notify_cmd cmd,
1208 struct ieee80211_sta *sta)
1209 {
1210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1211 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1212
1213 switch (cmd) {
1214 case STA_NOTIFY_SLEEP:
1215 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1216 ieee80211_sta_block_awake(hw, sta, true);
1217 /*
1218 * The fw updates the STA to be asleep. Tx packets on the Tx
1219 * queues to this station will not be transmitted. The fw will
1220 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1221 */
1222 break;
1223 case STA_NOTIFY_AWAKE:
1224 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1225 break;
1226 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1227 break;
1228 default:
1229 break;
1230 }
1231 }
1232
1233 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1234 struct ieee80211_vif *vif,
1235 struct ieee80211_sta *sta)
1236 {
1237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1239
1240 /*
1241 * This is called before mac80211 does RCU synchronisation,
1242 * so here we already invalidate our internal RCU-protected
1243 * station pointer. The rest of the code will thus no longer
1244 * be able to find the station this way, and we don't rely
1245 * on further RCU synchronisation after the sta_state()
1246 * callback deleted the station.
1247 */
1248 mutex_lock(&mvm->mutex);
1249 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1250 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1251 ERR_PTR(-ENOENT));
1252 mutex_unlock(&mvm->mutex);
1253 }
1254
1255 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1256 struct ieee80211_vif *vif,
1257 struct ieee80211_sta *sta,
1258 enum ieee80211_sta_state old_state,
1259 enum ieee80211_sta_state new_state)
1260 {
1261 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1262 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1263 int ret;
1264
1265 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1266 sta->addr, old_state, new_state);
1267
1268 /* this would be a mac80211 bug ... but don't crash */
1269 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1270 return -EINVAL;
1271
1272 /* if a STA is being removed, reuse its ID */
1273 flush_work(&mvm->sta_drained_wk);
1274
1275 mutex_lock(&mvm->mutex);
1276 if (old_state == IEEE80211_STA_NOTEXIST &&
1277 new_state == IEEE80211_STA_NONE) {
1278 /*
1279 * Firmware bug - it'll crash if the beacon interval is less
1280 * than 16. We can't avoid connecting at all, so refuse the
1281 * station state change, this will cause mac80211 to abandon
1282 * attempts to connect to this AP, and eventually wpa_s will
1283 * blacklist the AP...
1284 */
1285 if (vif->type == NL80211_IFTYPE_STATION &&
1286 vif->bss_conf.beacon_int < 16) {
1287 IWL_ERR(mvm,
1288 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1289 sta->addr, vif->bss_conf.beacon_int);
1290 ret = -EINVAL;
1291 goto out_unlock;
1292 }
1293 ret = iwl_mvm_add_sta(mvm, vif, sta);
1294 } else if (old_state == IEEE80211_STA_NONE &&
1295 new_state == IEEE80211_STA_AUTH) {
1296 ret = 0;
1297 } else if (old_state == IEEE80211_STA_AUTH &&
1298 new_state == IEEE80211_STA_ASSOC) {
1299 ret = iwl_mvm_update_sta(mvm, vif, sta);
1300 if (ret == 0)
1301 iwl_mvm_rs_rate_init(mvm, sta,
1302 mvmvif->phy_ctxt->channel->band,
1303 true);
1304 } else if (old_state == IEEE80211_STA_ASSOC &&
1305 new_state == IEEE80211_STA_AUTHORIZED) {
1306 /* enable beacon filtering */
1307 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1308 ret = 0;
1309 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1310 new_state == IEEE80211_STA_ASSOC) {
1311 /* disable beacon filtering */
1312 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1313 ret = 0;
1314 } else if (old_state == IEEE80211_STA_ASSOC &&
1315 new_state == IEEE80211_STA_AUTH) {
1316 ret = 0;
1317 } else if (old_state == IEEE80211_STA_AUTH &&
1318 new_state == IEEE80211_STA_NONE) {
1319 ret = 0;
1320 } else if (old_state == IEEE80211_STA_NONE &&
1321 new_state == IEEE80211_STA_NOTEXIST) {
1322 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1323 } else {
1324 ret = -EIO;
1325 }
1326 out_unlock:
1327 mutex_unlock(&mvm->mutex);
1328
1329 return ret;
1330 }
1331
1332 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1333 {
1334 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1335
1336 mvm->rts_threshold = value;
1337
1338 return 0;
1339 }
1340
1341 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1342 struct ieee80211_vif *vif,
1343 struct ieee80211_sta *sta, u32 changed)
1344 {
1345 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1346
1347 if (vif->type == NL80211_IFTYPE_STATION &&
1348 changed & IEEE80211_RC_NSS_CHANGED)
1349 iwl_mvm_sf_update(mvm, vif, false);
1350 }
1351
1352 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1353 struct ieee80211_vif *vif, u16 ac,
1354 const struct ieee80211_tx_queue_params *params)
1355 {
1356 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1357 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1358
1359 mvmvif->queue_params[ac] = *params;
1360
1361 /*
1362 * No need to update right away, we'll get BSS_CHANGED_QOS
1363 * The exception is P2P_DEVICE interface which needs immediate update.
1364 */
1365 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1366 int ret;
1367
1368 mutex_lock(&mvm->mutex);
1369 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1370 mutex_unlock(&mvm->mutex);
1371 return ret;
1372 }
1373 return 0;
1374 }
1375
1376 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1377 struct ieee80211_vif *vif)
1378 {
1379 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1380 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1381 200 + vif->bss_conf.beacon_int);
1382 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1383 100 + vif->bss_conf.beacon_int);
1384
1385 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1386 return;
1387
1388 mutex_lock(&mvm->mutex);
1389 /* Try really hard to protect the session and hear a beacon */
1390 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1391 mutex_unlock(&mvm->mutex);
1392 }
1393
1394 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1395 struct ieee80211_vif *vif,
1396 struct cfg80211_sched_scan_request *req,
1397 struct ieee80211_sched_scan_ies *ies)
1398 {
1399 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1400 int ret;
1401
1402 mutex_lock(&mvm->mutex);
1403
1404 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1405 IWL_DEBUG_SCAN(mvm,
1406 "SCHED SCAN request during internal scan - abort\n");
1407 ret = -EBUSY;
1408 goto out;
1409 }
1410
1411 mvm->scan_status = IWL_MVM_SCAN_SCHED;
1412
1413 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1414 if (ret)
1415 goto err;
1416
1417 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1418 if (ret)
1419 goto err;
1420
1421 ret = iwl_mvm_sched_scan_start(mvm, req);
1422 if (!ret)
1423 goto out;
1424 err:
1425 mvm->scan_status = IWL_MVM_SCAN_NONE;
1426 out:
1427 mutex_unlock(&mvm->mutex);
1428 return ret;
1429 }
1430
1431 static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1432 struct ieee80211_vif *vif)
1433 {
1434 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1435
1436 mutex_lock(&mvm->mutex);
1437 iwl_mvm_sched_scan_stop(mvm);
1438 mutex_unlock(&mvm->mutex);
1439 }
1440
1441 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1442 enum set_key_cmd cmd,
1443 struct ieee80211_vif *vif,
1444 struct ieee80211_sta *sta,
1445 struct ieee80211_key_conf *key)
1446 {
1447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1448 int ret;
1449
1450 if (iwlwifi_mod_params.sw_crypto) {
1451 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1452 return -EOPNOTSUPP;
1453 }
1454
1455 switch (key->cipher) {
1456 case WLAN_CIPHER_SUITE_TKIP:
1457 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1458 /* fall-through */
1459 case WLAN_CIPHER_SUITE_CCMP:
1460 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1461 break;
1462 case WLAN_CIPHER_SUITE_AES_CMAC:
1463 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1464 break;
1465 case WLAN_CIPHER_SUITE_WEP40:
1466 case WLAN_CIPHER_SUITE_WEP104:
1467 /*
1468 * Support for TX only, at least for now, so accept
1469 * the key and do nothing else. Then mac80211 will
1470 * pass it for TX but we don't have to use it for RX.
1471 */
1472 return 0;
1473 default:
1474 /* currently FW supports only one optional cipher scheme */
1475 if (hw->n_cipher_schemes &&
1476 hw->cipher_schemes->cipher == key->cipher)
1477 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1478 else
1479 return -EOPNOTSUPP;
1480 }
1481
1482 mutex_lock(&mvm->mutex);
1483
1484 switch (cmd) {
1485 case SET_KEY:
1486 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1487 vif->type == NL80211_IFTYPE_AP) && !sta) {
1488 /*
1489 * GTK on AP interface is a TX-only key, return 0;
1490 * on IBSS they're per-station and because we're lazy
1491 * we don't support them for RX, so do the same.
1492 */
1493 ret = 0;
1494 key->hw_key_idx = STA_KEY_IDX_INVALID;
1495 break;
1496 }
1497
1498 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1499 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1500 if (ret) {
1501 IWL_WARN(mvm, "set key failed\n");
1502 /*
1503 * can't add key for RX, but we don't need it
1504 * in the device for TX so still return 0
1505 */
1506 key->hw_key_idx = STA_KEY_IDX_INVALID;
1507 ret = 0;
1508 }
1509
1510 break;
1511 case DISABLE_KEY:
1512 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1513 ret = 0;
1514 break;
1515 }
1516
1517 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1518 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1519 break;
1520 default:
1521 ret = -EINVAL;
1522 }
1523
1524 mutex_unlock(&mvm->mutex);
1525 return ret;
1526 }
1527
1528 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1529 struct ieee80211_vif *vif,
1530 struct ieee80211_key_conf *keyconf,
1531 struct ieee80211_sta *sta,
1532 u32 iv32, u16 *phase1key)
1533 {
1534 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1535
1536 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1537 return;
1538
1539 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1540 }
1541
1542
1543 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1544 struct ieee80211_vif *vif,
1545 struct ieee80211_channel *channel,
1546 int duration,
1547 enum ieee80211_roc_type type)
1548 {
1549 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1550 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1551 struct cfg80211_chan_def chandef;
1552 struct iwl_mvm_phy_ctxt *phy_ctxt;
1553 int ret, i;
1554
1555 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1556 duration, type);
1557
1558 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1559 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1560 return -EINVAL;
1561 }
1562
1563 mutex_lock(&mvm->mutex);
1564
1565 for (i = 0; i < NUM_PHY_CTX; i++) {
1566 phy_ctxt = &mvm->phy_ctxts[i];
1567 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1568 continue;
1569
1570 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1571 /*
1572 * Unbind the P2P_DEVICE from the current PHY context,
1573 * and if the PHY context is not used remove it.
1574 */
1575 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1576 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1577 goto out_unlock;
1578
1579 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1580
1581 /* Bind the P2P_DEVICE to the current PHY Context */
1582 mvmvif->phy_ctxt = phy_ctxt;
1583
1584 ret = iwl_mvm_binding_add_vif(mvm, vif);
1585 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1586 goto out_unlock;
1587
1588 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1589 goto schedule_time_event;
1590 }
1591 }
1592
1593 /* Need to update the PHY context only if the ROC channel changed */
1594 if (channel == mvmvif->phy_ctxt->channel)
1595 goto schedule_time_event;
1596
1597 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1598
1599 /*
1600 * Change the PHY context configuration as it is currently referenced
1601 * only by the P2P Device MAC
1602 */
1603 if (mvmvif->phy_ctxt->ref == 1) {
1604 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1605 &chandef, 1, 1);
1606 if (ret)
1607 goto out_unlock;
1608 } else {
1609 /*
1610 * The PHY context is shared with other MACs. Need to remove the
1611 * P2P Device from the binding, allocate an new PHY context and
1612 * create a new binding
1613 */
1614 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1615 if (!phy_ctxt) {
1616 ret = -ENOSPC;
1617 goto out_unlock;
1618 }
1619
1620 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1621 1, 1);
1622 if (ret) {
1623 IWL_ERR(mvm, "Failed to change PHY context\n");
1624 goto out_unlock;
1625 }
1626
1627 /* Unbind the P2P_DEVICE from the current PHY context */
1628 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1629 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1630 goto out_unlock;
1631
1632 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1633
1634 /* Bind the P2P_DEVICE to the new allocated PHY context */
1635 mvmvif->phy_ctxt = phy_ctxt;
1636
1637 ret = iwl_mvm_binding_add_vif(mvm, vif);
1638 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1639 goto out_unlock;
1640
1641 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1642 }
1643
1644 schedule_time_event:
1645 /* Schedule the time events */
1646 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1647
1648 out_unlock:
1649 mutex_unlock(&mvm->mutex);
1650 IWL_DEBUG_MAC80211(mvm, "leave\n");
1651 return ret;
1652 }
1653
1654 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1655 {
1656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1657
1658 IWL_DEBUG_MAC80211(mvm, "enter\n");
1659
1660 mutex_lock(&mvm->mutex);
1661 iwl_mvm_stop_p2p_roc(mvm);
1662 mutex_unlock(&mvm->mutex);
1663
1664 IWL_DEBUG_MAC80211(mvm, "leave\n");
1665 return 0;
1666 }
1667
1668 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1669 struct ieee80211_chanctx_conf *ctx)
1670 {
1671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1672 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1673 struct iwl_mvm_phy_ctxt *phy_ctxt;
1674 int ret;
1675
1676 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1677
1678 mutex_lock(&mvm->mutex);
1679 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1680 if (!phy_ctxt) {
1681 ret = -ENOSPC;
1682 goto out;
1683 }
1684
1685 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1686 ctx->rx_chains_static,
1687 ctx->rx_chains_dynamic);
1688 if (ret) {
1689 IWL_ERR(mvm, "Failed to add PHY context\n");
1690 goto out;
1691 }
1692
1693 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1694 *phy_ctxt_id = phy_ctxt->id;
1695 out:
1696 mutex_unlock(&mvm->mutex);
1697 return ret;
1698 }
1699
1700 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1701 struct ieee80211_chanctx_conf *ctx)
1702 {
1703 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1704 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1705 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1706
1707 mutex_lock(&mvm->mutex);
1708 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1709 mutex_unlock(&mvm->mutex);
1710 }
1711
1712 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1713 struct ieee80211_chanctx_conf *ctx,
1714 u32 changed)
1715 {
1716 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1717 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1718 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1719
1720 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1721 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1722 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1723 IEEE80211_CHANCTX_CHANGE_RADAR |
1724 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
1725 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1726 phy_ctxt->ref, changed))
1727 return;
1728
1729 mutex_lock(&mvm->mutex);
1730 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1731 ctx->rx_chains_static,
1732 ctx->rx_chains_dynamic);
1733 iwl_mvm_bt_coex_vif_change(mvm);
1734 mutex_unlock(&mvm->mutex);
1735 }
1736
1737 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1738 struct ieee80211_vif *vif,
1739 struct ieee80211_chanctx_conf *ctx)
1740 {
1741 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1742 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1743 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1744 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1745 int ret;
1746
1747 mutex_lock(&mvm->mutex);
1748
1749 mvmvif->phy_ctxt = phy_ctxt;
1750
1751 switch (vif->type) {
1752 case NL80211_IFTYPE_AP:
1753 case NL80211_IFTYPE_ADHOC:
1754 /*
1755 * The AP binding flow is handled as part of the start_ap flow
1756 * (in bss_info_changed), similarly for IBSS.
1757 */
1758 ret = 0;
1759 goto out_unlock;
1760 case NL80211_IFTYPE_STATION:
1761 case NL80211_IFTYPE_MONITOR:
1762 break;
1763 default:
1764 ret = -EINVAL;
1765 goto out_unlock;
1766 }
1767
1768 ret = iwl_mvm_binding_add_vif(mvm, vif);
1769 if (ret)
1770 goto out_unlock;
1771
1772 /*
1773 * Power state must be updated before quotas,
1774 * otherwise fw will complain.
1775 */
1776 mvm->bound_vif_cnt++;
1777 iwl_mvm_power_update_binding(mvm, vif, true);
1778
1779 /* Setting the quota at this stage is only required for monitor
1780 * interfaces. For the other types, the bss_info changed flow
1781 * will handle quota settings.
1782 */
1783 if (vif->type == NL80211_IFTYPE_MONITOR) {
1784 mvmvif->monitor_active = true;
1785 ret = iwl_mvm_update_quotas(mvm, vif);
1786 if (ret)
1787 goto out_remove_binding;
1788 }
1789
1790 goto out_unlock;
1791
1792 out_remove_binding:
1793 iwl_mvm_binding_remove_vif(mvm, vif);
1794 mvm->bound_vif_cnt--;
1795 iwl_mvm_power_update_binding(mvm, vif, false);
1796 out_unlock:
1797 mutex_unlock(&mvm->mutex);
1798 if (ret)
1799 mvmvif->phy_ctxt = NULL;
1800 return ret;
1801 }
1802
1803 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1804 struct ieee80211_vif *vif,
1805 struct ieee80211_chanctx_conf *ctx)
1806 {
1807 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1808 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1809
1810 mutex_lock(&mvm->mutex);
1811
1812 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1813
1814 switch (vif->type) {
1815 case NL80211_IFTYPE_AP:
1816 case NL80211_IFTYPE_ADHOC:
1817 goto out_unlock;
1818 case NL80211_IFTYPE_MONITOR:
1819 mvmvif->monitor_active = false;
1820 iwl_mvm_update_quotas(mvm, NULL);
1821 break;
1822 default:
1823 break;
1824 }
1825
1826 iwl_mvm_binding_remove_vif(mvm, vif);
1827 mvm->bound_vif_cnt--;
1828 iwl_mvm_power_update_binding(mvm, vif, false);
1829
1830 out_unlock:
1831 mvmvif->phy_ctxt = NULL;
1832 mutex_unlock(&mvm->mutex);
1833 }
1834
1835 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1836 struct ieee80211_sta *sta,
1837 bool set)
1838 {
1839 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1840 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1841
1842 if (!mvm_sta || !mvm_sta->vif) {
1843 IWL_ERR(mvm, "Station is not associated to a vif\n");
1844 return -EINVAL;
1845 }
1846
1847 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1848 }
1849
1850 #ifdef CONFIG_NL80211_TESTMODE
1851 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
1852 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
1853 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
1854 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
1855 };
1856
1857 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
1858 struct ieee80211_vif *vif,
1859 void *data, int len)
1860 {
1861 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
1862 int err;
1863 u32 noa_duration;
1864
1865 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
1866 if (err)
1867 return err;
1868
1869 if (!tb[IWL_MVM_TM_ATTR_CMD])
1870 return -EINVAL;
1871
1872 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
1873 case IWL_MVM_TM_CMD_SET_NOA:
1874 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
1875 !vif->bss_conf.enable_beacon ||
1876 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
1877 return -EINVAL;
1878
1879 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
1880 if (noa_duration >= vif->bss_conf.beacon_int)
1881 return -EINVAL;
1882
1883 mvm->noa_duration = noa_duration;
1884 mvm->noa_vif = vif;
1885
1886 return iwl_mvm_update_quotas(mvm, NULL);
1887 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
1888 /* must be associated client vif - ignore authorized */
1889 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
1890 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
1891 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
1892 return -EINVAL;
1893
1894 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
1895 return iwl_mvm_enable_beacon_filter(mvm, vif);
1896 return iwl_mvm_disable_beacon_filter(mvm, vif);
1897 }
1898
1899 return -EOPNOTSUPP;
1900 }
1901
1902 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
1903 struct ieee80211_vif *vif,
1904 void *data, int len)
1905 {
1906 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1907 int err;
1908
1909 mutex_lock(&mvm->mutex);
1910 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
1911 mutex_unlock(&mvm->mutex);
1912
1913 return err;
1914 }
1915 #endif
1916
1917 struct ieee80211_ops iwl_mvm_hw_ops = {
1918 .tx = iwl_mvm_mac_tx,
1919 .ampdu_action = iwl_mvm_mac_ampdu_action,
1920 .start = iwl_mvm_mac_start,
1921 .restart_complete = iwl_mvm_mac_restart_complete,
1922 .stop = iwl_mvm_mac_stop,
1923 .add_interface = iwl_mvm_mac_add_interface,
1924 .remove_interface = iwl_mvm_mac_remove_interface,
1925 .config = iwl_mvm_mac_config,
1926 .prepare_multicast = iwl_mvm_prepare_multicast,
1927 .configure_filter = iwl_mvm_configure_filter,
1928 .bss_info_changed = iwl_mvm_bss_info_changed,
1929 .hw_scan = iwl_mvm_mac_hw_scan,
1930 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1931 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
1932 .sta_state = iwl_mvm_mac_sta_state,
1933 .sta_notify = iwl_mvm_mac_sta_notify,
1934 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1935 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1936 .sta_rc_update = iwl_mvm_sta_rc_update,
1937 .conf_tx = iwl_mvm_mac_conf_tx,
1938 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1939 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
1940 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
1941 .set_key = iwl_mvm_mac_set_key,
1942 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1943 .remain_on_channel = iwl_mvm_roc,
1944 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1945 .add_chanctx = iwl_mvm_add_chanctx,
1946 .remove_chanctx = iwl_mvm_remove_chanctx,
1947 .change_chanctx = iwl_mvm_change_chanctx,
1948 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1949 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1950
1951 .start_ap = iwl_mvm_start_ap_ibss,
1952 .stop_ap = iwl_mvm_stop_ap_ibss,
1953 .join_ibss = iwl_mvm_start_ap_ibss,
1954 .leave_ibss = iwl_mvm_stop_ap_ibss,
1955
1956 .set_tim = iwl_mvm_set_tim,
1957
1958 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
1959
1960 #ifdef CONFIG_PM_SLEEP
1961 /* look at d3.c */
1962 .suspend = iwl_mvm_suspend,
1963 .resume = iwl_mvm_resume,
1964 .set_wakeup = iwl_mvm_set_wakeup,
1965 .set_rekey_data = iwl_mvm_set_rekey_data,
1966 #if IS_ENABLED(CONFIG_IPV6)
1967 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1968 #endif
1969 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1970 #endif
1971 };
Linux kernel - Deliverables
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