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fix a kmap leak in virtio_console
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
blobc49b5073c2513e39a0c0fb3610209213e1a7e4ea
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 (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 int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
332 struct ieee80211_vif *vif,
333 enum ieee80211_ampdu_mlme_action action,
334 struct ieee80211_sta *sta, u16 tid,
335 u16 *ssn, u8 buf_size)
336 {
337 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
338 int ret;
339
340 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
341 sta->addr, tid, action);
342
343 if (!(mvm->nvm_data->sku_cap_11n_enable))
344 return -EACCES;
345
346 mutex_lock(&mvm->mutex);
347
348 switch (action) {
349 case IEEE80211_AMPDU_RX_START:
350 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
351 ret = -EINVAL;
352 break;
353 }
354 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
355 break;
356 case IEEE80211_AMPDU_RX_STOP:
357 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
358 break;
359 case IEEE80211_AMPDU_TX_START:
360 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
361 ret = -EINVAL;
362 break;
363 }
364 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
365 break;
366 case IEEE80211_AMPDU_TX_STOP_CONT:
367 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
368 break;
369 case IEEE80211_AMPDU_TX_STOP_FLUSH:
370 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
371 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
372 break;
373 case IEEE80211_AMPDU_TX_OPERATIONAL:
374 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
375 break;
376 default:
377 WARN_ON_ONCE(1);
378 ret = -EINVAL;
379 break;
380 }
381 mutex_unlock(&mvm->mutex);
382
383 return ret;
384 }
385
386 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
387 struct ieee80211_vif *vif)
388 {
389 struct iwl_mvm *mvm = data;
390 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
391
392 mvmvif->uploaded = false;
393 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
394
395 /* does this make sense at all? */
396 mvmvif->color++;
397
398 spin_lock_bh(&mvm->time_event_lock);
399 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
400 spin_unlock_bh(&mvm->time_event_lock);
401
402 mvmvif->phy_ctxt = NULL;
403 }
404
405 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
406 {
407 iwl_trans_stop_device(mvm->trans);
408
409 mvm->scan_status = IWL_MVM_SCAN_NONE;
410
411 /* just in case one was running */
412 ieee80211_remain_on_channel_expired(mvm->hw);
413
414 ieee80211_iterate_active_interfaces_atomic(
415 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
416 iwl_mvm_cleanup_iterator, mvm);
417
418 mvm->p2p_device_vif = NULL;
419
420 iwl_mvm_reset_phy_ctxts(mvm);
421 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
422 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
423
424 ieee80211_wake_queues(mvm->hw);
425
426 mvm->vif_count = 0;
427 mvm->rx_ba_sessions = 0;
428 }
429
430 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
431 {
432 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
433 int ret;
434
435 mutex_lock(&mvm->mutex);
436
437 /* Clean up some internal and mac80211 state on restart */
438 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
439 iwl_mvm_restart_cleanup(mvm);
440
441 ret = iwl_mvm_up(mvm);
442 mutex_unlock(&mvm->mutex);
443
444 return ret;
445 }
446
447 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
448 {
449 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
450 int ret;
451
452 mutex_lock(&mvm->mutex);
453
454 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
455 ret = iwl_mvm_update_quotas(mvm, NULL);
456 if (ret)
457 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
458 ret);
459
460 mutex_unlock(&mvm->mutex);
461 }
462
463 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
464 {
465 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
466
467 flush_work(&mvm->async_handlers_wk);
468
469 mutex_lock(&mvm->mutex);
470 /* async_handlers_wk is now blocked */
471
472 /*
473 * The work item could be running or queued if the
474 * ROC time event stops just as we get here.
475 */
476 cancel_work_sync(&mvm->roc_done_wk);
477
478 iwl_trans_stop_device(mvm->trans);
479
480 iwl_mvm_async_handlers_purge(mvm);
481 /* async_handlers_list is empty and will stay empty: HW is stopped */
482
483 /* the fw is stopped, the aux sta is dead: clean up driver state */
484 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
485
486 mutex_unlock(&mvm->mutex);
487
488 /*
489 * The worker might have been waiting for the mutex, let it run and
490 * discover that its list is now empty.
491 */
492 cancel_work_sync(&mvm->async_handlers_wk);
493 }
494
495 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
496 struct ieee80211_vif *vif)
497 {
498 struct iwl_mvm *mvm = data;
499
500 iwl_mvm_power_update_mode(mvm, vif);
501 }
502
503 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
504 {
505 u16 i;
506
507 lockdep_assert_held(&mvm->mutex);
508
509 for (i = 0; i < NUM_PHY_CTX; i++)
510 if (!mvm->phy_ctxts[i].ref)
511 return &mvm->phy_ctxts[i];
512
513 IWL_ERR(mvm, "No available PHY context\n");
514 return NULL;
515 }
516
517 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
518 s8 tx_power)
519 {
520 /* FW is in charge of regulatory enforcement */
521 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
522 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
523 .pwr_restriction = cpu_to_le16(tx_power),
524 };
525
526 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
527 sizeof(reduce_txpwr_cmd),
528 &reduce_txpwr_cmd);
529 }
530
531 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
532 struct ieee80211_vif *vif)
533 {
534 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
535 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
536 int ret;
537
538 /*
539 * Not much to do here. The stack will not allow interface
540 * types or combinations that we didn't advertise, so we
541 * don't really have to check the types.
542 */
543
544 mutex_lock(&mvm->mutex);
545
546 /* Allocate resources for the MAC context, and add it to the fw */
547 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
548 if (ret)
549 goto out_unlock;
550
551 /* Counting number of interfaces is needed for legacy PM */
552 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
553 mvm->vif_count++;
554
555 /*
556 * The AP binding flow can be done only after the beacon
557 * template is configured (which happens only in the mac80211
558 * start_ap() flow), and adding the broadcast station can happen
559 * only after the binding.
560 * In addition, since modifying the MAC before adding a bcast
561 * station is not allowed by the FW, delay the adding of MAC context to
562 * the point where we can also add the bcast station.
563 * In short: there's not much we can do at this point, other than
564 * allocating resources :)
565 */
566 if (vif->type == NL80211_IFTYPE_AP ||
567 vif->type == NL80211_IFTYPE_ADHOC) {
568 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
569 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
570 qmask);
571 if (ret) {
572 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
573 goto out_release;
574 }
575
576 iwl_mvm_vif_dbgfs_register(mvm, vif);
577 goto out_unlock;
578 }
579
580 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
581 if (ret)
582 goto out_release;
583
584 iwl_mvm_power_disable(mvm, vif);
585
586 /* beacon filtering */
587 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
588 if (ret)
589 goto out_remove_mac;
590
591 if (!mvm->bf_allowed_vif &&
592 vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
593 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED){
594 mvm->bf_allowed_vif = mvmvif;
595 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
596 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
597 }
598
599 /*
600 * P2P_DEVICE interface does not have a channel context assigned to it,
601 * so a dedicated PHY context is allocated to it and the corresponding
602 * MAC context is bound to it at this stage.
603 */
604 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
605
606 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
607 if (!mvmvif->phy_ctxt) {
608 ret = -ENOSPC;
609 goto out_free_bf;
610 }
611
612 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
613 ret = iwl_mvm_binding_add_vif(mvm, vif);
614 if (ret)
615 goto out_unref_phy;
616
617 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
618 if (ret)
619 goto out_unbind;
620
621 /* Save a pointer to p2p device vif, so it can later be used to
622 * update the p2p device MAC when a GO is started/stopped */
623 mvm->p2p_device_vif = vif;
624 }
625
626 iwl_mvm_vif_dbgfs_register(mvm, vif);
627 goto out_unlock;
628
629 out_unbind:
630 iwl_mvm_binding_remove_vif(mvm, vif);
631 out_unref_phy:
632 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
633 out_free_bf:
634 if (mvm->bf_allowed_vif == mvmvif) {
635 mvm->bf_allowed_vif = NULL;
636 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
637 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
638 }
639 out_remove_mac:
640 mvmvif->phy_ctxt = NULL;
641 iwl_mvm_mac_ctxt_remove(mvm, vif);
642 out_release:
643 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
644 mvm->vif_count--;
645
646 /* TODO: remove this when legacy PM will be discarded */
647 ieee80211_iterate_active_interfaces(
648 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
649 iwl_mvm_power_update_iterator, mvm);
650
651 iwl_mvm_mac_ctxt_release(mvm, vif);
652 out_unlock:
653 mutex_unlock(&mvm->mutex);
654
655 return ret;
656 }
657
658 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
659 struct ieee80211_vif *vif)
660 {
661 u32 tfd_msk = 0, ac;
662
663 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
664 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
665 tfd_msk |= BIT(vif->hw_queue[ac]);
666
667 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
668 tfd_msk |= BIT(vif->cab_queue);
669
670 if (tfd_msk) {
671 mutex_lock(&mvm->mutex);
672 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
673 mutex_unlock(&mvm->mutex);
674 }
675
676 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
677 /*
678 * Flush the ROC worker which will flush the OFFCHANNEL queue.
679 * We assume here that all the packets sent to the OFFCHANNEL
680 * queue are sent in ROC session.
681 */
682 flush_work(&mvm->roc_done_wk);
683 } else {
684 /*
685 * By now, all the AC queues are empty. The AGG queues are
686 * empty too. We already got all the Tx responses for all the
687 * packets in the queues. The drain work can have been
688 * triggered. Flush it.
689 */
690 flush_work(&mvm->sta_drained_wk);
691 }
692 }
693
694 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
695 struct ieee80211_vif *vif)
696 {
697 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
698 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
699
700 iwl_mvm_prepare_mac_removal(mvm, vif);
701
702 mutex_lock(&mvm->mutex);
703
704 if (mvm->bf_allowed_vif == mvmvif) {
705 mvm->bf_allowed_vif = NULL;
706 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
707 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
708 }
709
710 iwl_mvm_vif_dbgfs_clean(mvm, vif);
711
712 /*
713 * For AP/GO interface, the tear down of the resources allocated to the
714 * interface is be handled as part of the stop_ap flow.
715 */
716 if (vif->type == NL80211_IFTYPE_AP ||
717 vif->type == NL80211_IFTYPE_ADHOC) {
718 #ifdef CONFIG_NL80211_TESTMODE
719 if (vif == mvm->noa_vif) {
720 mvm->noa_vif = NULL;
721 mvm->noa_duration = 0;
722 }
723 #endif
724 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
725 goto out_release;
726 }
727
728 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
729 mvm->p2p_device_vif = NULL;
730 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
731 iwl_mvm_binding_remove_vif(mvm, vif);
732 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
733 mvmvif->phy_ctxt = NULL;
734 }
735
736 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
737 mvm->vif_count--;
738
739 /* TODO: remove this when legacy PM will be discarded */
740 ieee80211_iterate_active_interfaces(
741 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
742 iwl_mvm_power_update_iterator, mvm);
743
744 iwl_mvm_mac_ctxt_remove(mvm, vif);
745
746 out_release:
747 iwl_mvm_mac_ctxt_release(mvm, vif);
748 mutex_unlock(&mvm->mutex);
749 }
750
751 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
752 {
753 return 0;
754 }
755
756 struct iwl_mvm_mc_iter_data {
757 struct iwl_mvm *mvm;
758 int port_id;
759 };
760
761 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
762 struct ieee80211_vif *vif)
763 {
764 struct iwl_mvm_mc_iter_data *data = _data;
765 struct iwl_mvm *mvm = data->mvm;
766 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
767 int ret, len;
768
769 /* if we don't have free ports, mcast frames will be dropped */
770 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
771 return;
772
773 if (vif->type != NL80211_IFTYPE_STATION ||
774 !vif->bss_conf.assoc)
775 return;
776
777 cmd->port_id = data->port_id++;
778 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
779 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
780
781 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
782 if (ret)
783 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
784 }
785
786 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
787 {
788 struct iwl_mvm_mc_iter_data iter_data = {
789 .mvm = mvm,
790 };
791
792 lockdep_assert_held(&mvm->mutex);
793
794 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
795 return;
796
797 ieee80211_iterate_active_interfaces(
798 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
799 iwl_mvm_mc_iface_iterator, &iter_data);
800 }
801
802 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
803 struct netdev_hw_addr_list *mc_list)
804 {
805 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
806 struct iwl_mcast_filter_cmd *cmd;
807 struct netdev_hw_addr *addr;
808 int addr_count = netdev_hw_addr_list_count(mc_list);
809 bool pass_all = false;
810 int len;
811
812 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
813 pass_all = true;
814 addr_count = 0;
815 }
816
817 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
818 cmd = kzalloc(len, GFP_ATOMIC);
819 if (!cmd)
820 return 0;
821
822 if (pass_all) {
823 cmd->pass_all = 1;
824 return (u64)(unsigned long)cmd;
825 }
826
827 netdev_hw_addr_list_for_each(addr, mc_list) {
828 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
829 cmd->count, addr->addr);
830 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
831 addr->addr, ETH_ALEN);
832 cmd->count++;
833 }
834
835 return (u64)(unsigned long)cmd;
836 }
837
838 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
839 unsigned int changed_flags,
840 unsigned int *total_flags,
841 u64 multicast)
842 {
843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
844 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
845
846 mutex_lock(&mvm->mutex);
847
848 /* replace previous configuration */
849 kfree(mvm->mcast_filter_cmd);
850 mvm->mcast_filter_cmd = cmd;
851
852 if (!cmd)
853 goto out;
854
855 iwl_mvm_recalc_multicast(mvm);
856 out:
857 mutex_unlock(&mvm->mutex);
858 *total_flags = 0;
859 }
860
861 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
862 struct ieee80211_vif *vif,
863 struct ieee80211_bss_conf *bss_conf,
864 u32 changes)
865 {
866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
867 int ret;
868
869 /*
870 * Re-calculate the tsf id, as the master-slave relations depend on the
871 * beacon interval, which was not known when the station interface was
872 * added.
873 */
874 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
875 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
876
877 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
878 if (ret)
879 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
880
881 if (changes & BSS_CHANGED_ASSOC) {
882 if (bss_conf->assoc) {
883 /* add quota for this interface */
884 ret = iwl_mvm_update_quotas(mvm, vif);
885 if (ret) {
886 IWL_ERR(mvm, "failed to update quotas\n");
887 return;
888 }
889
890 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
891 &mvm->status)) {
892 /*
893 * If we're restarting then the firmware will
894 * obviously have lost synchronisation with
895 * the AP. It will attempt to synchronise by
896 * itself, but we can make it more reliable by
897 * scheduling a session protection time event.
898 *
899 * The firmware needs to receive a beacon to
900 * catch up with synchronisation, use 110% of
901 * the beacon interval.
902 *
903 * Set a large maximum delay to allow for more
904 * than a single interface.
905 */
906 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
907 iwl_mvm_protect_session(mvm, vif, dur, dur,
908 5 * dur);
909 }
910
911 iwl_mvm_sf_update(mvm, vif, false);
912 iwl_mvm_power_vif_assoc(mvm, vif);
913 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
914 /*
915 * If update fails - SF might be running in associated
916 * mode while disassociated - which is forbidden.
917 */
918 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
919 "Failed to update SF upon disassociation\n");
920
921 /* remove AP station now that the MAC is unassoc */
922 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
923 if (ret)
924 IWL_ERR(mvm, "failed to remove AP station\n");
925 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
926 /* remove quota for this interface */
927 ret = iwl_mvm_update_quotas(mvm, NULL);
928 if (ret)
929 IWL_ERR(mvm, "failed to update quotas\n");
930 }
931
932 iwl_mvm_recalc_multicast(mvm);
933
934 /* reset rssi values */
935 mvmvif->bf_data.ave_beacon_signal = 0;
936
937 if (!(mvm->fw->ucode_capa.flags &
938 IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)) {
939 /* Workaround for FW bug, otherwise FW disables device
940 * power save upon disassociation
941 */
942 ret = iwl_mvm_power_update_mode(mvm, vif);
943 if (ret)
944 IWL_ERR(mvm, "failed to update power mode\n");
945 }
946 iwl_mvm_bt_coex_vif_change(mvm);
947 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
948 IEEE80211_SMPS_AUTOMATIC);
949 } else if (changes & BSS_CHANGED_BEACON_INFO) {
950 /*
951 * We received a beacon _after_ association so
952 * remove the session protection.
953 */
954 iwl_mvm_remove_time_event(mvm, mvmvif,
955 &mvmvif->time_event_data);
956 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
957 BSS_CHANGED_QOS)) {
958 ret = iwl_mvm_power_update_mode(mvm, vif);
959 if (ret)
960 IWL_ERR(mvm, "failed to update power mode\n");
961 }
962 if (changes & BSS_CHANGED_TXPOWER) {
963 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
964 bss_conf->txpower);
965 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
966 }
967
968 if (changes & BSS_CHANGED_CQM) {
969 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
970 /* reset cqm events tracking */
971 mvmvif->bf_data.last_cqm_event = 0;
972 ret = iwl_mvm_update_beacon_filter(mvm, vif);
973 if (ret)
974 IWL_ERR(mvm, "failed to update CQM thresholds\n");
975 }
976 }
977
978 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
979 struct ieee80211_vif *vif)
980 {
981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
982 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
983 int ret;
984
985 mutex_lock(&mvm->mutex);
986
987 /* Send the beacon template */
988 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
989 if (ret)
990 goto out_unlock;
991
992 /*
993 * Re-calculate the tsf id, as the master-slave relations depend on the
994 * beacon interval, which was not known when the AP interface was added.
995 */
996 if (vif->type == NL80211_IFTYPE_AP)
997 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
998
999 /* Add the mac context */
1000 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1001 if (ret)
1002 goto out_unlock;
1003
1004 /* Perform the binding */
1005 ret = iwl_mvm_binding_add_vif(mvm, vif);
1006 if (ret)
1007 goto out_remove;
1008
1009 mvmvif->ap_ibss_active = true;
1010
1011 /* Send the bcast station. At this stage the TBTT and DTIM time events
1012 * are added and applied to the scheduler */
1013 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1014 if (ret)
1015 goto out_unbind;
1016
1017 /* must be set before quota calculations */
1018 mvmvif->ap_ibss_active = true;
1019
1020 /* power updated needs to be done before quotas */
1021 mvm->bound_vif_cnt++;
1022 iwl_mvm_power_update_binding(mvm, vif, true);
1023
1024 ret = iwl_mvm_update_quotas(mvm, vif);
1025 if (ret)
1026 goto out_quota_failed;
1027
1028 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1029 if (vif->p2p && mvm->p2p_device_vif)
1030 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1031
1032 iwl_mvm_bt_coex_vif_change(mvm);
1033
1034 mutex_unlock(&mvm->mutex);
1035 return 0;
1036
1037 out_quota_failed:
1038 mvm->bound_vif_cnt--;
1039 iwl_mvm_power_update_binding(mvm, vif, false);
1040 mvmvif->ap_ibss_active = false;
1041 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1042 out_unbind:
1043 iwl_mvm_binding_remove_vif(mvm, vif);
1044 out_remove:
1045 iwl_mvm_mac_ctxt_remove(mvm, vif);
1046 out_unlock:
1047 mutex_unlock(&mvm->mutex);
1048 return ret;
1049 }
1050
1051 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1052 struct ieee80211_vif *vif)
1053 {
1054 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1055 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1056
1057 iwl_mvm_prepare_mac_removal(mvm, vif);
1058
1059 mutex_lock(&mvm->mutex);
1060
1061 mvmvif->ap_ibss_active = false;
1062
1063 iwl_mvm_bt_coex_vif_change(mvm);
1064
1065 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1066 if (vif->p2p && mvm->p2p_device_vif)
1067 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1068
1069 iwl_mvm_update_quotas(mvm, NULL);
1070 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1071 iwl_mvm_binding_remove_vif(mvm, vif);
1072
1073 mvm->bound_vif_cnt--;
1074 iwl_mvm_power_update_binding(mvm, vif, false);
1075
1076 iwl_mvm_mac_ctxt_remove(mvm, vif);
1077
1078 mutex_unlock(&mvm->mutex);
1079 }
1080
1081 static void
1082 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1083 struct ieee80211_vif *vif,
1084 struct ieee80211_bss_conf *bss_conf,
1085 u32 changes)
1086 {
1087 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1088 enum ieee80211_bss_change ht_change = BSS_CHANGED_ERP_CTS_PROT |
1089 BSS_CHANGED_HT |
1090 BSS_CHANGED_BANDWIDTH;
1091 int ret;
1092
1093 /* Changes will be applied when the AP/IBSS is started */
1094 if (!mvmvif->ap_ibss_active)
1095 return;
1096
1097 if (changes & ht_change) {
1098 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1099 if (ret)
1100 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1101 }
1102
1103 /* Need to send a new beacon template to the FW */
1104 if (changes & BSS_CHANGED_BEACON) {
1105 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1106 IWL_WARN(mvm, "Failed updating beacon data\n");
1107 }
1108 }
1109
1110 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1111 struct ieee80211_vif *vif,
1112 struct ieee80211_bss_conf *bss_conf,
1113 u32 changes)
1114 {
1115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117 mutex_lock(&mvm->mutex);
1118
1119 switch (vif->type) {
1120 case NL80211_IFTYPE_STATION:
1121 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1122 break;
1123 case NL80211_IFTYPE_AP:
1124 case NL80211_IFTYPE_ADHOC:
1125 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1126 break;
1127 default:
1128 /* shouldn't happen */
1129 WARN_ON_ONCE(1);
1130 }
1131
1132 mutex_unlock(&mvm->mutex);
1133 }
1134
1135 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1136 struct ieee80211_vif *vif,
1137 struct cfg80211_scan_request *req)
1138 {
1139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1140 int ret;
1141
1142 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1143 return -EINVAL;
1144
1145 mutex_lock(&mvm->mutex);
1146
1147 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
1148 ret = iwl_mvm_scan_request(mvm, vif, req);
1149 else
1150 ret = -EBUSY;
1151
1152 mutex_unlock(&mvm->mutex);
1153
1154 return ret;
1155 }
1156
1157 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1158 struct ieee80211_vif *vif)
1159 {
1160 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1161
1162 mutex_lock(&mvm->mutex);
1163
1164 iwl_mvm_cancel_scan(mvm);
1165
1166 mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static void
1170 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1171 struct ieee80211_sta *sta, u16 tid,
1172 int num_frames,
1173 enum ieee80211_frame_release_type reason,
1174 bool more_data)
1175 {
1176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1177
1178 /* TODO: how do we tell the fw to send frames for a specific TID */
1179
1180 /*
1181 * The fw will send EOSP notification when the last frame will be
1182 * transmitted.
1183 */
1184 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
1185 }
1186
1187 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1188 struct ieee80211_vif *vif,
1189 enum sta_notify_cmd cmd,
1190 struct ieee80211_sta *sta)
1191 {
1192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1194
1195 switch (cmd) {
1196 case STA_NOTIFY_SLEEP:
1197 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1198 ieee80211_sta_block_awake(hw, sta, true);
1199 /*
1200 * The fw updates the STA to be asleep. Tx packets on the Tx
1201 * queues to this station will not be transmitted. The fw will
1202 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1203 */
1204 break;
1205 case STA_NOTIFY_AWAKE:
1206 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1207 break;
1208 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1209 break;
1210 default:
1211 break;
1212 }
1213 }
1214
1215 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1216 struct ieee80211_vif *vif,
1217 struct ieee80211_sta *sta)
1218 {
1219 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1220 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1221
1222 /*
1223 * This is called before mac80211 does RCU synchronisation,
1224 * so here we already invalidate our internal RCU-protected
1225 * station pointer. The rest of the code will thus no longer
1226 * be able to find the station this way, and we don't rely
1227 * on further RCU synchronisation after the sta_state()
1228 * callback deleted the station.
1229 */
1230 mutex_lock(&mvm->mutex);
1231 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1232 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1233 ERR_PTR(-ENOENT));
1234 mutex_unlock(&mvm->mutex);
1235 }
1236
1237 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1238 struct ieee80211_vif *vif,
1239 struct ieee80211_sta *sta,
1240 enum ieee80211_sta_state old_state,
1241 enum ieee80211_sta_state new_state)
1242 {
1243 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1244 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1245 int ret;
1246
1247 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1248 sta->addr, old_state, new_state);
1249
1250 /* this would be a mac80211 bug ... but don't crash */
1251 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1252 return -EINVAL;
1253
1254 /* if a STA is being removed, reuse its ID */
1255 flush_work(&mvm->sta_drained_wk);
1256
1257 mutex_lock(&mvm->mutex);
1258 if (old_state == IEEE80211_STA_NOTEXIST &&
1259 new_state == IEEE80211_STA_NONE) {
1260 /*
1261 * Firmware bug - it'll crash if the beacon interval is less
1262 * than 16. We can't avoid connecting at all, so refuse the
1263 * station state change, this will cause mac80211 to abandon
1264 * attempts to connect to this AP, and eventually wpa_s will
1265 * blacklist the AP...
1266 */
1267 if (vif->type == NL80211_IFTYPE_STATION &&
1268 vif->bss_conf.beacon_int < 16) {
1269 IWL_ERR(mvm,
1270 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1271 sta->addr, vif->bss_conf.beacon_int);
1272 ret = -EINVAL;
1273 goto out_unlock;
1274 }
1275 ret = iwl_mvm_add_sta(mvm, vif, sta);
1276 } else if (old_state == IEEE80211_STA_NONE &&
1277 new_state == IEEE80211_STA_AUTH) {
1278 ret = 0;
1279 } else if (old_state == IEEE80211_STA_AUTH &&
1280 new_state == IEEE80211_STA_ASSOC) {
1281 ret = iwl_mvm_update_sta(mvm, vif, sta);
1282 if (ret == 0)
1283 iwl_mvm_rs_rate_init(mvm, sta,
1284 mvmvif->phy_ctxt->channel->band,
1285 true);
1286 } else if (old_state == IEEE80211_STA_ASSOC &&
1287 new_state == IEEE80211_STA_AUTHORIZED) {
1288 /* enable beacon filtering */
1289 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1290 ret = 0;
1291 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1292 new_state == IEEE80211_STA_ASSOC) {
1293 /* disable beacon filtering */
1294 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1295 ret = 0;
1296 } else if (old_state == IEEE80211_STA_ASSOC &&
1297 new_state == IEEE80211_STA_AUTH) {
1298 ret = 0;
1299 } else if (old_state == IEEE80211_STA_AUTH &&
1300 new_state == IEEE80211_STA_NONE) {
1301 ret = 0;
1302 } else if (old_state == IEEE80211_STA_NONE &&
1303 new_state == IEEE80211_STA_NOTEXIST) {
1304 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1305 } else {
1306 ret = -EIO;
1307 }
1308 out_unlock:
1309 mutex_unlock(&mvm->mutex);
1310
1311 return ret;
1312 }
1313
1314 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1315 {
1316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1317
1318 mvm->rts_threshold = value;
1319
1320 return 0;
1321 }
1322
1323 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1324 struct ieee80211_vif *vif,
1325 struct ieee80211_sta *sta, u32 changed)
1326 {
1327 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1328
1329 if (vif->type == NL80211_IFTYPE_STATION &&
1330 changed & IEEE80211_RC_NSS_CHANGED)
1331 iwl_mvm_sf_update(mvm, vif, false);
1332 }
1333
1334 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1335 struct ieee80211_vif *vif, u16 ac,
1336 const struct ieee80211_tx_queue_params *params)
1337 {
1338 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1339 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1340
1341 mvmvif->queue_params[ac] = *params;
1342
1343 /*
1344 * No need to update right away, we'll get BSS_CHANGED_QOS
1345 * The exception is P2P_DEVICE interface which needs immediate update.
1346 */
1347 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1348 int ret;
1349
1350 mutex_lock(&mvm->mutex);
1351 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1352 mutex_unlock(&mvm->mutex);
1353 return ret;
1354 }
1355 return 0;
1356 }
1357
1358 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1359 struct ieee80211_vif *vif)
1360 {
1361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1362 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1363 200 + vif->bss_conf.beacon_int);
1364 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1365 100 + vif->bss_conf.beacon_int);
1366
1367 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1368 return;
1369
1370 mutex_lock(&mvm->mutex);
1371 /* Try really hard to protect the session and hear a beacon */
1372 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1373 mutex_unlock(&mvm->mutex);
1374 }
1375
1376 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1377 struct ieee80211_vif *vif,
1378 struct cfg80211_sched_scan_request *req,
1379 struct ieee80211_sched_scan_ies *ies)
1380 {
1381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1382 int ret;
1383
1384 mutex_lock(&mvm->mutex);
1385
1386 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1387 IWL_DEBUG_SCAN(mvm,
1388 "SCHED SCAN request during internal scan - abort\n");
1389 ret = -EBUSY;
1390 goto out;
1391 }
1392
1393 mvm->scan_status = IWL_MVM_SCAN_SCHED;
1394
1395 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1396 if (ret)
1397 goto err;
1398
1399 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1400 if (ret)
1401 goto err;
1402
1403 ret = iwl_mvm_sched_scan_start(mvm, req);
1404 if (!ret)
1405 goto out;
1406 err:
1407 mvm->scan_status = IWL_MVM_SCAN_NONE;
1408 out:
1409 mutex_unlock(&mvm->mutex);
1410 return ret;
1411 }
1412
1413 static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1414 struct ieee80211_vif *vif)
1415 {
1416 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1417
1418 mutex_lock(&mvm->mutex);
1419 iwl_mvm_sched_scan_stop(mvm);
1420 mutex_unlock(&mvm->mutex);
1421 }
1422
1423 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1424 enum set_key_cmd cmd,
1425 struct ieee80211_vif *vif,
1426 struct ieee80211_sta *sta,
1427 struct ieee80211_key_conf *key)
1428 {
1429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1430 int ret;
1431
1432 if (iwlwifi_mod_params.sw_crypto) {
1433 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1434 return -EOPNOTSUPP;
1435 }
1436
1437 switch (key->cipher) {
1438 case WLAN_CIPHER_SUITE_TKIP:
1439 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1440 /* fall-through */
1441 case WLAN_CIPHER_SUITE_CCMP:
1442 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1443 break;
1444 case WLAN_CIPHER_SUITE_AES_CMAC:
1445 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1446 break;
1447 case WLAN_CIPHER_SUITE_WEP40:
1448 case WLAN_CIPHER_SUITE_WEP104:
1449 /*
1450 * Support for TX only, at least for now, so accept
1451 * the key and do nothing else. Then mac80211 will
1452 * pass it for TX but we don't have to use it for RX.
1453 */
1454 return 0;
1455 default:
1456 /* currently FW supports only one optional cipher scheme */
1457 if (hw->n_cipher_schemes &&
1458 hw->cipher_schemes->cipher == key->cipher)
1459 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1460 else
1461 return -EOPNOTSUPP;
1462 }
1463
1464 mutex_lock(&mvm->mutex);
1465
1466 switch (cmd) {
1467 case SET_KEY:
1468 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1469 vif->type == NL80211_IFTYPE_AP) && !sta) {
1470 /*
1471 * GTK on AP interface is a TX-only key, return 0;
1472 * on IBSS they're per-station and because we're lazy
1473 * we don't support them for RX, so do the same.
1474 */
1475 ret = 0;
1476 key->hw_key_idx = STA_KEY_IDX_INVALID;
1477 break;
1478 }
1479
1480 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1481 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1482 if (ret) {
1483 IWL_WARN(mvm, "set key failed\n");
1484 /*
1485 * can't add key for RX, but we don't need it
1486 * in the device for TX so still return 0
1487 */
1488 key->hw_key_idx = STA_KEY_IDX_INVALID;
1489 ret = 0;
1490 }
1491
1492 break;
1493 case DISABLE_KEY:
1494 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1495 ret = 0;
1496 break;
1497 }
1498
1499 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1500 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1501 break;
1502 default:
1503 ret = -EINVAL;
1504 }
1505
1506 mutex_unlock(&mvm->mutex);
1507 return ret;
1508 }
1509
1510 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1511 struct ieee80211_vif *vif,
1512 struct ieee80211_key_conf *keyconf,
1513 struct ieee80211_sta *sta,
1514 u32 iv32, u16 *phase1key)
1515 {
1516 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1517
1518 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1519 return;
1520
1521 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1522 }
1523
1524
1525 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1526 struct ieee80211_vif *vif,
1527 struct ieee80211_channel *channel,
1528 int duration,
1529 enum ieee80211_roc_type type)
1530 {
1531 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1532 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1533 struct cfg80211_chan_def chandef;
1534 struct iwl_mvm_phy_ctxt *phy_ctxt;
1535 int ret, i;
1536
1537 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1538 duration, type);
1539
1540 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1541 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1542 return -EINVAL;
1543 }
1544
1545 mutex_lock(&mvm->mutex);
1546
1547 for (i = 0; i < NUM_PHY_CTX; i++) {
1548 phy_ctxt = &mvm->phy_ctxts[i];
1549 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1550 continue;
1551
1552 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1553 /*
1554 * Unbind the P2P_DEVICE from the current PHY context,
1555 * and if the PHY context is not used remove it.
1556 */
1557 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1558 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1559 goto out_unlock;
1560
1561 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1562
1563 /* Bind the P2P_DEVICE to the current PHY Context */
1564 mvmvif->phy_ctxt = phy_ctxt;
1565
1566 ret = iwl_mvm_binding_add_vif(mvm, vif);
1567 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1568 goto out_unlock;
1569
1570 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1571 goto schedule_time_event;
1572 }
1573 }
1574
1575 /* Need to update the PHY context only if the ROC channel changed */
1576 if (channel == mvmvif->phy_ctxt->channel)
1577 goto schedule_time_event;
1578
1579 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1580
1581 /*
1582 * Change the PHY context configuration as it is currently referenced
1583 * only by the P2P Device MAC
1584 */
1585 if (mvmvif->phy_ctxt->ref == 1) {
1586 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1587 &chandef, 1, 1);
1588 if (ret)
1589 goto out_unlock;
1590 } else {
1591 /*
1592 * The PHY context is shared with other MACs. Need to remove the
1593 * P2P Device from the binding, allocate an new PHY context and
1594 * create a new binding
1595 */
1596 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1597 if (!phy_ctxt) {
1598 ret = -ENOSPC;
1599 goto out_unlock;
1600 }
1601
1602 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1603 1, 1);
1604 if (ret) {
1605 IWL_ERR(mvm, "Failed to change PHY context\n");
1606 goto out_unlock;
1607 }
1608
1609 /* Unbind the P2P_DEVICE from the current PHY context */
1610 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1611 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1612 goto out_unlock;
1613
1614 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1615
1616 /* Bind the P2P_DEVICE to the new allocated PHY context */
1617 mvmvif->phy_ctxt = phy_ctxt;
1618
1619 ret = iwl_mvm_binding_add_vif(mvm, vif);
1620 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1621 goto out_unlock;
1622
1623 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1624 }
1625
1626 schedule_time_event:
1627 /* Schedule the time events */
1628 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1629
1630 out_unlock:
1631 mutex_unlock(&mvm->mutex);
1632 IWL_DEBUG_MAC80211(mvm, "leave\n");
1633 return ret;
1634 }
1635
1636 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1637 {
1638 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1639
1640 IWL_DEBUG_MAC80211(mvm, "enter\n");
1641
1642 mutex_lock(&mvm->mutex);
1643 iwl_mvm_stop_p2p_roc(mvm);
1644 mutex_unlock(&mvm->mutex);
1645
1646 IWL_DEBUG_MAC80211(mvm, "leave\n");
1647 return 0;
1648 }
1649
1650 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1651 struct ieee80211_chanctx_conf *ctx)
1652 {
1653 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1654 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1655 struct iwl_mvm_phy_ctxt *phy_ctxt;
1656 int ret;
1657
1658 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1659
1660 mutex_lock(&mvm->mutex);
1661 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1662 if (!phy_ctxt) {
1663 ret = -ENOSPC;
1664 goto out;
1665 }
1666
1667 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1668 ctx->rx_chains_static,
1669 ctx->rx_chains_dynamic);
1670 if (ret) {
1671 IWL_ERR(mvm, "Failed to add PHY context\n");
1672 goto out;
1673 }
1674
1675 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1676 *phy_ctxt_id = phy_ctxt->id;
1677 out:
1678 mutex_unlock(&mvm->mutex);
1679 return ret;
1680 }
1681
1682 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1683 struct ieee80211_chanctx_conf *ctx)
1684 {
1685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1686 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1687 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1688
1689 mutex_lock(&mvm->mutex);
1690 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1691 mutex_unlock(&mvm->mutex);
1692 }
1693
1694 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1695 struct ieee80211_chanctx_conf *ctx,
1696 u32 changed)
1697 {
1698 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1699 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1700 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1701
1702 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1703 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1704 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1705 IEEE80211_CHANCTX_CHANGE_RADAR |
1706 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
1707 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1708 phy_ctxt->ref, changed))
1709 return;
1710
1711 mutex_lock(&mvm->mutex);
1712 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1713 ctx->rx_chains_static,
1714 ctx->rx_chains_dynamic);
1715 iwl_mvm_bt_coex_vif_change(mvm);
1716 mutex_unlock(&mvm->mutex);
1717 }
1718
1719 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1720 struct ieee80211_vif *vif,
1721 struct ieee80211_chanctx_conf *ctx)
1722 {
1723 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1724 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1725 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1727 int ret;
1728
1729 mutex_lock(&mvm->mutex);
1730
1731 mvmvif->phy_ctxt = phy_ctxt;
1732
1733 switch (vif->type) {
1734 case NL80211_IFTYPE_AP:
1735 case NL80211_IFTYPE_ADHOC:
1736 /*
1737 * The AP binding flow is handled as part of the start_ap flow
1738 * (in bss_info_changed), similarly for IBSS.
1739 */
1740 ret = 0;
1741 goto out_unlock;
1742 case NL80211_IFTYPE_STATION:
1743 case NL80211_IFTYPE_MONITOR:
1744 break;
1745 default:
1746 ret = -EINVAL;
1747 goto out_unlock;
1748 }
1749
1750 ret = iwl_mvm_binding_add_vif(mvm, vif);
1751 if (ret)
1752 goto out_unlock;
1753
1754 /*
1755 * Power state must be updated before quotas,
1756 * otherwise fw will complain.
1757 */
1758 mvm->bound_vif_cnt++;
1759 iwl_mvm_power_update_binding(mvm, vif, true);
1760
1761 /* Setting the quota at this stage is only required for monitor
1762 * interfaces. For the other types, the bss_info changed flow
1763 * will handle quota settings.
1764 */
1765 if (vif->type == NL80211_IFTYPE_MONITOR) {
1766 mvmvif->monitor_active = true;
1767 ret = iwl_mvm_update_quotas(mvm, vif);
1768 if (ret)
1769 goto out_remove_binding;
1770 }
1771
1772 goto out_unlock;
1773
1774 out_remove_binding:
1775 iwl_mvm_binding_remove_vif(mvm, vif);
1776 mvm->bound_vif_cnt--;
1777 iwl_mvm_power_update_binding(mvm, vif, false);
1778 out_unlock:
1779 mutex_unlock(&mvm->mutex);
1780 if (ret)
1781 mvmvif->phy_ctxt = NULL;
1782 return ret;
1783 }
1784
1785 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1786 struct ieee80211_vif *vif,
1787 struct ieee80211_chanctx_conf *ctx)
1788 {
1789 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1790 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1791
1792 mutex_lock(&mvm->mutex);
1793
1794 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1795
1796 switch (vif->type) {
1797 case NL80211_IFTYPE_AP:
1798 case NL80211_IFTYPE_ADHOC:
1799 goto out_unlock;
1800 case NL80211_IFTYPE_MONITOR:
1801 mvmvif->monitor_active = false;
1802 iwl_mvm_update_quotas(mvm, NULL);
1803 break;
1804 default:
1805 break;
1806 }
1807
1808 iwl_mvm_binding_remove_vif(mvm, vif);
1809 mvm->bound_vif_cnt--;
1810 iwl_mvm_power_update_binding(mvm, vif, false);
1811
1812 out_unlock:
1813 mvmvif->phy_ctxt = NULL;
1814 mutex_unlock(&mvm->mutex);
1815 }
1816
1817 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1818 struct ieee80211_sta *sta,
1819 bool set)
1820 {
1821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1822 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1823
1824 if (!mvm_sta || !mvm_sta->vif) {
1825 IWL_ERR(mvm, "Station is not associated to a vif\n");
1826 return -EINVAL;
1827 }
1828
1829 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1830 }
1831
1832 #ifdef CONFIG_NL80211_TESTMODE
1833 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
1834 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
1835 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
1836 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
1837 };
1838
1839 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
1840 struct ieee80211_vif *vif,
1841 void *data, int len)
1842 {
1843 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
1844 int err;
1845 u32 noa_duration;
1846
1847 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
1848 if (err)
1849 return err;
1850
1851 if (!tb[IWL_MVM_TM_ATTR_CMD])
1852 return -EINVAL;
1853
1854 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
1855 case IWL_MVM_TM_CMD_SET_NOA:
1856 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
1857 !vif->bss_conf.enable_beacon ||
1858 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
1859 return -EINVAL;
1860
1861 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
1862 if (noa_duration >= vif->bss_conf.beacon_int)
1863 return -EINVAL;
1864
1865 mvm->noa_duration = noa_duration;
1866 mvm->noa_vif = vif;
1867
1868 return iwl_mvm_update_quotas(mvm, NULL);
1869 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
1870 /* must be associated client vif - ignore authorized */
1871 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
1872 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
1873 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
1874 return -EINVAL;
1875
1876 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
1877 return iwl_mvm_enable_beacon_filter(mvm, vif);
1878 return iwl_mvm_disable_beacon_filter(mvm, vif);
1879 }
1880
1881 return -EOPNOTSUPP;
1882 }
1883
1884 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
1885 struct ieee80211_vif *vif,
1886 void *data, int len)
1887 {
1888 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1889 int err;
1890
1891 mutex_lock(&mvm->mutex);
1892 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
1893 mutex_unlock(&mvm->mutex);
1894
1895 return err;
1896 }
1897 #endif
1898
1899 struct ieee80211_ops iwl_mvm_hw_ops = {
1900 .tx = iwl_mvm_mac_tx,
1901 .ampdu_action = iwl_mvm_mac_ampdu_action,
1902 .start = iwl_mvm_mac_start,
1903 .restart_complete = iwl_mvm_mac_restart_complete,
1904 .stop = iwl_mvm_mac_stop,
1905 .add_interface = iwl_mvm_mac_add_interface,
1906 .remove_interface = iwl_mvm_mac_remove_interface,
1907 .config = iwl_mvm_mac_config,
1908 .prepare_multicast = iwl_mvm_prepare_multicast,
1909 .configure_filter = iwl_mvm_configure_filter,
1910 .bss_info_changed = iwl_mvm_bss_info_changed,
1911 .hw_scan = iwl_mvm_mac_hw_scan,
1912 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1913 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
1914 .sta_state = iwl_mvm_mac_sta_state,
1915 .sta_notify = iwl_mvm_mac_sta_notify,
1916 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1917 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1918 .sta_rc_update = iwl_mvm_sta_rc_update,
1919 .conf_tx = iwl_mvm_mac_conf_tx,
1920 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1921 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
1922 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
1923 .set_key = iwl_mvm_mac_set_key,
1924 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1925 .remain_on_channel = iwl_mvm_roc,
1926 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1927 .add_chanctx = iwl_mvm_add_chanctx,
1928 .remove_chanctx = iwl_mvm_remove_chanctx,
1929 .change_chanctx = iwl_mvm_change_chanctx,
1930 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1931 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1932
1933 .start_ap = iwl_mvm_start_ap_ibss,
1934 .stop_ap = iwl_mvm_stop_ap_ibss,
1935 .join_ibss = iwl_mvm_start_ap_ibss,
1936 .leave_ibss = iwl_mvm_stop_ap_ibss,
1937
1938 .set_tim = iwl_mvm_set_tim,
1939
1940 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
1941
1942 #ifdef CONFIG_PM_SLEEP
1943 /* look at d3.c */
1944 .suspend = iwl_mvm_suspend,
1945 .resume = iwl_mvm_resume,
1946 .set_wakeup = iwl_mvm_set_wakeup,
1947 .set_rekey_data = iwl_mvm_set_rekey_data,
1948 #if IS_ENABLED(CONFIG_IPV6)
1949 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1950 #endif
1951 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1952 #endif
1953 };
Linux with added FPC-III support