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iwlwifi: mvm: Loosen the channel context/phy context coupling
[thirdparty/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
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8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
410dc5aa 25 * in the file called COPYING.
8ca151b5
JB		 26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63#include <linux/kernel.h>
64#include <linux/slab.h>
65#include <linux/skbuff.h>
66#include <linux/netdevice.h>
67#include <linux/etherdevice.h>
f0c2646a 68#include <linux/ip.h>
8ca151b5 69#include <net/mac80211.h>
f0c2646a 70#include <net/tcp.h>
8ca151b5
JB		 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
81static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
82 {
83 .max = 1,
84 .types = BIT(NL80211_IFTYPE_STATION) |
85 BIT(NL80211_IFTYPE_AP),
86 },
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
90 BIT(NL80211_IFTYPE_P2P_GO),
91 },
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
95 },
96};
97
98static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
99 {
100 .num_different_channels = 1,
101 .max_interfaces = 3,
102 .limits = iwl_mvm_limits,
103 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
104 },
105};
106
f0c2646a
JB		 107#ifdef CONFIG_PM_SLEEP
108static const struct nl80211_wowlan_tcp_data_token_feature
109iwl_mvm_wowlan_tcp_token_feature = {
110 .min_len = 0,
111 .max_len = 255,
112 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
113};
114
115static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
116 .tok = &iwl_mvm_wowlan_tcp_token_feature,
117 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
118 sizeof(struct ethhdr) -
119 sizeof(struct iphdr) -
120 sizeof(struct tcphdr),
121 .data_interval_max = 65535, /* __le16 in API */
122 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .seq = true,
127};
128#endif
129
fe0f2de3
IP		 130static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
131{
132 int i;
133
134 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
135 for (i = 0; i < NUM_PHY_CTX; i++) {
136 mvm->phy_ctxts[i].id = i;
137 mvm->phy_ctxts[i].ref = 0;
138 }
139}
140
8ca151b5
JB		 141int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
142{
143 struct ieee80211_hw *hw = mvm->hw;
831e85f3 144 int num_mac, ret, i;
8ca151b5
JB		 145
146 /* Tell mac80211 our characteristics */
147 hw->flags = IEEE80211_HW_SIGNAL_DBM |
148 IEEE80211_HW_SPECTRUM_MGMT |
149 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
150 IEEE80211_HW_QUEUE_CONTROL |
151 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 152 IEEE80211_HW_SUPPORTS_PS |
153 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd
JB		 154 IEEE80211_HW_AMPDU_AGGREGATION |
155 IEEE80211_HW_TIMING_BEACON_ONLY;
8ca151b5 156
398e8c6c
IP		 157 hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
158 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
8ca151b5
JB		 159 hw->rate_control_algorithm = "iwl-mvm-rs";
160
161 /*
162 * Enable 11w if advertised by firmware and software crypto
163 * is not enabled (as the firmware will interpret some mgmt
164 * packets, so enabling it with software crypto isn't safe)
165 */
166 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
167 !iwlwifi_mod_params.sw_crypto)
168 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
169
170 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
171 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 172 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 173
174 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
175 BIT(NL80211_IFTYPE_P2P_CLIENT) |
176 BIT(NL80211_IFTYPE_AP) |
177 BIT(NL80211_IFTYPE_P2P_GO) |
178 BIT(NL80211_IFTYPE_P2P_DEVICE);
179
180 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
181 WIPHY_FLAG_DISABLE_BEACON_HINTS |
182 WIPHY_FLAG_IBSS_RSN;
183
184 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
185 hw->wiphy->n_iface_combinations =
186 ARRAY_SIZE(iwl_mvm_iface_combinations);
187
c451e6d4 188 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 189 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
190
191 /* Extract MAC address */
192 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
193 hw->wiphy->addresses = mvm->addresses;
194 hw->wiphy->n_addresses = 1;
831e85f3
IP		 195
196 /* Extract additional MAC addresses if available */
197 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
198 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
199
200 for (i = 1; i < num_mac; i++) {
201 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 202 ETH_ALEN);
831e85f3 203 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 204 hw->wiphy->n_addresses++;
205 }
206
fe0f2de3
IP		 207 iwl_mvm_reset_phy_ctxts(mvm);
208
8ca151b5
JB		 209 /* we create the 802.11 header and a max-length SSID element */
210 hw->wiphy->max_scan_ie_len =
211 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
212 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
213
214 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
215 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
216 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
217 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
218 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
219 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
220
221 hw->wiphy->hw_version = mvm->trans->hw_id;
222
ade50652 223 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 224 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
225 else
226 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
227
228 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
229 NL80211_FEATURE_P2P_GO_OPPPS;
230
231 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
232
233#ifdef CONFIG_PM_SLEEP
234 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
235 mvm->trans->ops->d3_suspend &&
236 mvm->trans->ops->d3_resume &&
237 device_can_wakeup(mvm->trans->dev)) {
238 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
239 WIPHY_WOWLAN_DISCONNECT |
240 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
241 WIPHY_WOWLAN_RFKILL_RELEASE;
242 if (!iwlwifi_mod_params.sw_crypto)
243 hw->wiphy->wowlan.flags |=
244 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
245 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
246 WIPHY_WOWLAN_4WAY_HANDSHAKE;
247
248 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
249 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
250 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
f0c2646a 251 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
8ca151b5
JB		 252 }
253#endif
254
255 ret = iwl_mvm_leds_init(mvm);
256 if (ret)
257 return ret;
258
259 return ieee80211_register_hw(mvm->hw);
260}
261
262static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
263 struct ieee80211_tx_control *control,
264 struct sk_buff *skb)
265{
266 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
267
268 if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
269 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
270 goto drop;
271 }
272
398e8c6c 273 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
8ca151b5
JB		 274 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
275 goto drop;
276
277 if (control->sta) {
278 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
279 goto drop;
280 return;
281 }
282
283 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
284 goto drop;
285 return;
286 drop:
287 ieee80211_free_txskb(hw, skb);
288}
289
290static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
291 struct ieee80211_vif *vif,
292 enum ieee80211_ampdu_mlme_action action,
293 struct ieee80211_sta *sta, u16 tid,
294 u16 *ssn, u8 buf_size)
295{
296 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
297 int ret;
298
299 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
300 sta->addr, tid, action);
301
302 if (!(mvm->nvm_data->sku_cap_11n_enable))
303 return -EACCES;
304
305 mutex_lock(&mvm->mutex);
306
307 switch (action) {
308 case IEEE80211_AMPDU_RX_START:
309 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
310 ret = -EINVAL;
311 break;
312 }
313 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
314 break;
315 case IEEE80211_AMPDU_RX_STOP:
316 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
317 break;
318 case IEEE80211_AMPDU_TX_START:
5d158efa
EG		 319 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
320 ret = -EINVAL;
321 break;
322 }
8ca151b5
JB		 323 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
324 break;
325 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 326 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
327 break;
8ca151b5
JB		 328 case IEEE80211_AMPDU_TX_STOP_FLUSH:
329 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 330 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 331 break;
332 case IEEE80211_AMPDU_TX_OPERATIONAL:
333 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
334 break;
335 default:
336 WARN_ON_ONCE(1);
337 ret = -EINVAL;
338 break;
339 }
340 mutex_unlock(&mvm->mutex);
341
342 return ret;
343}
344
345static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
346 struct ieee80211_vif *vif)
347{
348 struct iwl_mvm *mvm = data;
349 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
350
351 mvmvif->uploaded = false;
352 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
353
354 /* does this make sense at all? */
355 mvmvif->color++;
356
357 spin_lock_bh(&mvm->time_event_lock);
358 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
359 spin_unlock_bh(&mvm->time_event_lock);
360
fe0f2de3 361 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 362}
363
364static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
365{
366 iwl_trans_stop_device(mvm->trans);
367 iwl_trans_stop_hw(mvm->trans, false);
368
369 mvm->scan_status = IWL_MVM_SCAN_NONE;
370
371 /* just in case one was running */
372 ieee80211_remain_on_channel_expired(mvm->hw);
373
374 ieee80211_iterate_active_interfaces_atomic(
375 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
376 iwl_mvm_cleanup_iterator, mvm);
377
fe0f2de3
IP		 378 mvm->p2p_device_vif = NULL;
379
380 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 381 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
382 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
383
384 ieee80211_wake_queues(mvm->hw);
385
386 mvm->vif_count = 0;
387}
388
389static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
390{
391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
392 int ret;
393
394 mutex_lock(&mvm->mutex);
395
396 /* Clean up some internal and mac80211 state on restart */
397 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
398 iwl_mvm_restart_cleanup(mvm);
399
400 ret = iwl_mvm_up(mvm);
401 mutex_unlock(&mvm->mutex);
402
403 return ret;
404}
405
406static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
407{
408 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
409 int ret;
410
411 mutex_lock(&mvm->mutex);
412
413 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
414 ret = iwl_mvm_update_quotas(mvm, NULL);
415 if (ret)
416 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
417 ret);
418
419 mutex_unlock(&mvm->mutex);
420}
421
422static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
423{
424 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
425
426 flush_work(&mvm->async_handlers_wk);
427
428 mutex_lock(&mvm->mutex);
429 /* async_handlers_wk is now blocked */
430
431 /*
432 * The work item could be running or queued if the
433 * ROC time event stops just as we get here.
434 */
435 cancel_work_sync(&mvm->roc_done_wk);
436
437 iwl_trans_stop_device(mvm->trans);
438 iwl_trans_stop_hw(mvm->trans, false);
439
440 iwl_mvm_async_handlers_purge(mvm);
441 /* async_handlers_list is empty and will stay empty: HW is stopped */
442
443 /* the fw is stopped, the aux sta is dead: clean up driver state */
444 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
445
446 mutex_unlock(&mvm->mutex);
447
448 /*
449 * The worker might have been waiting for the mutex, let it run and
450 * discover that its list is now empty.
451 */
452 cancel_work_sync(&mvm->async_handlers_wk);
453}
454
455static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
456 struct ieee80211_vif *vif)
457{
458 struct iwl_mvm *mvm = data;
459 int ret;
460
461 ret = iwl_mvm_power_disable(mvm, vif);
462 if (ret)
463 IWL_ERR(mvm, "failed to disable power management\n");
464}
465
466static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
467 struct ieee80211_vif *vif)
468{
469 struct iwl_mvm *mvm = data;
470
471 iwl_mvm_power_update_mode(mvm, vif);
472}
473
fe0f2de3
IP		 474static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
475{
476 u16 i;
477
478 lockdep_assert_held(&mvm->mutex);
479
480 for (i = 0; i < NUM_PHY_CTX; i++)
481 if (!mvm->phy_ctxts[i].ref)
482 return &mvm->phy_ctxts[i];
483
484 IWL_ERR(mvm, "No available PHY context\n");
485 return NULL;
486}
487
8ca151b5
JB		 488static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
489 struct ieee80211_vif *vif)
490{
491 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
493 int ret;
494
495 /*
496 * Not much to do here. The stack will not allow interface
497 * types or combinations that we didn't advertise, so we
498 * don't really have to check the types.
499 */
500
501 mutex_lock(&mvm->mutex);
502
503 /* Allocate resources for the MAC context, and add it the the fw */
504 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
505 if (ret)
506 goto out_unlock;
507
508 /*
509 * The AP binding flow can be done only after the beacon
510 * template is configured (which happens only in the mac80211
511 * start_ap() flow), and adding the broadcast station can happen
512 * only after the binding.
513 * In addition, since modifying the MAC before adding a bcast
514 * station is not allowed by the FW, delay the adding of MAC context to
515 * the point where we can also add the bcast station.
516 * In short: there's not much we can do at this point, other than
517 * allocating resources :)
518 */
519 if (vif->type == NL80211_IFTYPE_AP) {
520 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
521 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
522 qmask);
523 if (ret) {
524 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
525 goto out_release;
526 }
527
528 goto out_unlock;
529 }
530
531 /*
532 * TODO: remove this temporary code.
533 * Currently MVM FW supports power management only on single MAC.
5ee2b215
AB		 534 * If new interface added, disable PM on existing interface.
535 * P2P device is a special case, since it is handled by FW similary to
536 * scan. If P2P deviced is added, PM remains enabled on existing
537 * interface.
8ca151b5
JB		 538 * Note: the method below does not count the new interface being added
539 * at this moment.
540 */
5ee2b215
AB		 541 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
542 mvm->vif_count++;
8ca151b5
JB		 543 if (mvm->vif_count > 1) {
544 IWL_DEBUG_MAC80211(mvm,
545 "Disable power on existing interfaces\n");
5360cfb2 546 ieee80211_iterate_active_interfaces_atomic(
8ca151b5
JB		 547 mvm->hw,
548 IEEE80211_IFACE_ITER_NORMAL,
549 iwl_mvm_pm_disable_iterator, mvm);
550 }
551
552 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
553 if (ret)
554 goto out_release;
555
556 /*
557 * Update power state on the new interface. Admittedly, based on
558 * mac80211 logics this power update will disable power management
559 */
560 iwl_mvm_power_update_mode(mvm, vif);
561
7df15b1e
HG		 562 /* beacon filtering */
563 if (!mvm->bf_allowed_vif &&
564 vif->type == NL80211_IFTYPE_STATION && !vif->p2p){
565 mvm->bf_allowed_vif = mvmvif;
566 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
567 }
568
569 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
570 if (ret)
571 goto out_release;
572
8ca151b5
JB		 573 /*
574 * P2P_DEVICE interface does not have a channel context assigned to it,
575 * so a dedicated PHY context is allocated to it and the corresponding
576 * MAC context is bound to it at this stage.
577 */
578 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
579 struct ieee80211_channel *chan;
580 struct cfg80211_chan_def chandef;
581
fe0f2de3
IP		 582 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
583 if (!mvmvif->phy_ctxt) {
584 ret = -ENOSPC;
585 goto out_remove_mac;
586 }
8ca151b5
JB		 587
588 /*
589 * The channel used here isn't relevant as it's
590 * going to be overwritten as part of the ROC flow.
591 * For now use the first channel we have.
592 */
593 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
594 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
595 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
596 &chandef, 1, 1);
597 if (ret)
598 goto out_remove_mac;
599
600 ret = iwl_mvm_binding_add_vif(mvm, vif);
601 if (ret)
602 goto out_remove_phy;
603
604 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
605 if (ret)
606 goto out_unbind;
607
608 /* Save a pointer to p2p device vif, so it can later be used to
609 * update the p2p device MAC when a GO is started/stopped */
610 mvm->p2p_device_vif = vif;
611 }
612
63494374 613 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 614 goto out_unlock;
615
616 out_unbind:
617 iwl_mvm_binding_remove_vif(mvm, vif);
618 out_remove_phy:
fe0f2de3 619 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 620 out_remove_mac:
621 mvmvif->phy_ctxt = NULL;
622 iwl_mvm_mac_ctxt_remove(mvm, vif);
623 out_release:
624 /*
625 * TODO: remove this temporary code.
626 * Currently MVM FW supports power management only on single MAC.
5ee2b215 627 * Check if only one additional interface remains after releasing
8ca151b5
JB		 628 * current one. Update power mode on the remaining interface.
629 */
5ee2b215
AB		 630 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
631 mvm->vif_count--;
8ca151b5
JB		 632 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
633 mvm->vif_count);
634 if (mvm->vif_count == 1) {
635 ieee80211_iterate_active_interfaces(
636 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
637 iwl_mvm_power_update_iterator, mvm);
638 }
639 iwl_mvm_mac_ctxt_release(mvm, vif);
640 out_unlock:
641 mutex_unlock(&mvm->mutex);
642
643 return ret;
644}
645
38a12b5b
JB		 646static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
647 struct ieee80211_vif *vif)
8ca151b5 648{
8ca151b5
JB		 649 u32 tfd_msk = 0, ac;
650
651 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
652 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
653 tfd_msk |= BIT(vif->hw_queue[ac]);
654
655 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
656 tfd_msk |= BIT(vif->cab_queue);
657
658 if (tfd_msk) {
659 mutex_lock(&mvm->mutex);
660 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
661 mutex_unlock(&mvm->mutex);
662 }
663
664 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
665 /*
666 * Flush the ROC worker which will flush the OFFCHANNEL queue.
667 * We assume here that all the packets sent to the OFFCHANNEL
668 * queue are sent in ROC session.
669 */
670 flush_work(&mvm->roc_done_wk);
671 } else {
672 /*
673 * By now, all the AC queues are empty. The AGG queues are
674 * empty too. We already got all the Tx responses for all the
675 * packets in the queues. The drain work can have been
676 * triggered. Flush it. This work item takes the mutex, so kill
677 * it before we take it.
678 */
679 flush_work(&mvm->sta_drained_wk);
680 }
38a12b5b
JB		 681}
682
683static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
684 struct ieee80211_vif *vif)
685{
686 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
687 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
688
689 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 690
691 mutex_lock(&mvm->mutex);
692
7df15b1e
HG		 693 if (mvm->bf_allowed_vif == mvmvif) {
694 mvm->bf_allowed_vif = NULL;
695 vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
696 }
697
63494374
JB		 698 iwl_mvm_vif_dbgfs_clean(mvm, vif);
699
8ca151b5
JB		 700 /*
701 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 702 * interface is be handled as part of the stop_ap flow.
8ca151b5
JB		 703 */
704 if (vif->type == NL80211_IFTYPE_AP) {
705 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
706 goto out_release;
707 }
708
709 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
710 mvm->p2p_device_vif = NULL;
711 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
712 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 713 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 714 mvmvif->phy_ctxt = NULL;
715 }
716
717 /*
718 * TODO: remove this temporary code.
719 * Currently MVM FW supports power management only on single MAC.
720 * Check if only one additional interface remains after removing
721 * current one. Update power mode on the remaining interface.
722 */
5ee2b215 723 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5
JB		 724 mvm->vif_count--;
725 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
726 mvm->vif_count);
727 if (mvm->vif_count == 1) {
728 ieee80211_iterate_active_interfaces(
729 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
730 iwl_mvm_power_update_iterator, mvm);
731 }
732
733 iwl_mvm_mac_ctxt_remove(mvm, vif);
734
735out_release:
736 iwl_mvm_mac_ctxt_release(mvm, vif);
737 mutex_unlock(&mvm->mutex);
738}
739
740static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
741{
742 return 0;
743}
744
745static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
746 unsigned int changed_flags,
747 unsigned int *total_flags,
748 u64 multicast)
749{
750 *total_flags = 0;
751}
752
753static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
754 struct ieee80211_vif *vif,
755 struct ieee80211_bss_conf *bss_conf,
756 u32 changes)
757{
758 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
759 int ret;
760
761 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
762 if (ret)
763 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
764
765 if (changes & BSS_CHANGED_ASSOC) {
766 if (bss_conf->assoc) {
767 /* add quota for this interface */
768 ret = iwl_mvm_update_quotas(mvm, vif);
769 if (ret) {
770 IWL_ERR(mvm, "failed to update quotas\n");
771 return;
772 }
9166b1ee 773 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
8ca151b5
JB		 774 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
775 /* remove AP station now that the MAC is unassoc */
776 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
777 if (ret)
778 IWL_ERR(mvm, "failed to remove AP station\n");
779 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
780 /* remove quota for this interface */
781 ret = iwl_mvm_update_quotas(mvm, NULL);
782 if (ret)
783 IWL_ERR(mvm, "failed to update quotas\n");
784 }
210a544e
JB		 785 } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
786 /*
787 * We received a beacon _after_ association so
788 * remove the session protection.
789 */
790 iwl_mvm_remove_time_event(mvm, mvmvif,
791 &mvmvif->time_event_data);
8ca151b5
JB		 792 } else if (changes & BSS_CHANGED_PS) {
793 /*
794 * TODO: remove this temporary code.
795 * Currently MVM FW supports power management only on single
796 * MAC. Avoid power mode update if more than one interface
797 * is active.
798 */
799 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
800 mvm->vif_count);
801 if (mvm->vif_count == 1) {
802 ret = iwl_mvm_power_update_mode(mvm, vif);
803 if (ret)
804 IWL_ERR(mvm, "failed to update power mode\n");
805 }
806 }
807}
808
809static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
810{
811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
812 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
813 int ret;
814
815 mutex_lock(&mvm->mutex);
816
817 /* Send the beacon template */
818 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
819 if (ret)
820 goto out_unlock;
821
822 /* Add the mac context */
823 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
824 if (ret)
825 goto out_unlock;
826
827 /* Perform the binding */
828 ret = iwl_mvm_binding_add_vif(mvm, vif);
829 if (ret)
830 goto out_remove;
831
832 mvmvif->ap_active = true;
833
834 /* Send the bcast station. At this stage the TBTT and DTIM time events
835 * are added and applied to the scheduler */
836 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
837 if (ret)
838 goto out_unbind;
839
840 ret = iwl_mvm_update_quotas(mvm, vif);
841 if (ret)
842 goto out_rm_bcast;
843
844 /* Need to update the P2P Device MAC */
845 if (vif->p2p && mvm->p2p_device_vif)
846 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
847
848 mutex_unlock(&mvm->mutex);
849 return 0;
850
851out_rm_bcast:
852 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
853out_unbind:
854 iwl_mvm_binding_remove_vif(mvm, vif);
855out_remove:
856 iwl_mvm_mac_ctxt_remove(mvm, vif);
857out_unlock:
858 mutex_unlock(&mvm->mutex);
859 return ret;
860}
861
862static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
863{
864 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
865 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
866
38a12b5b
JB		 867 iwl_mvm_prepare_mac_removal(mvm, vif);
868
8ca151b5
JB		 869 mutex_lock(&mvm->mutex);
870
871 mvmvif->ap_active = false;
872
873 /* Need to update the P2P Device MAC */
874 if (vif->p2p && mvm->p2p_device_vif)
875 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
876
877 iwl_mvm_update_quotas(mvm, NULL);
878 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
879 iwl_mvm_binding_remove_vif(mvm, vif);
880 iwl_mvm_mac_ctxt_remove(mvm, vif);
881
882 mutex_unlock(&mvm->mutex);
883}
884
885static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
886 struct ieee80211_vif *vif,
887 struct ieee80211_bss_conf *bss_conf,
888 u32 changes)
889{
890 /* Need to send a new beacon template to the FW */
891 if (changes & BSS_CHANGED_BEACON) {
892 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
893 IWL_WARN(mvm, "Failed updating beacon data\n");
894 }
895}
896
897static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
898 struct ieee80211_vif *vif,
899 struct ieee80211_bss_conf *bss_conf,
900 u32 changes)
901{
902 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
903
904 mutex_lock(&mvm->mutex);
905
906 switch (vif->type) {
907 case NL80211_IFTYPE_STATION:
908 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
909 break;
910 case NL80211_IFTYPE_AP:
911 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
912 break;
913 default:
914 /* shouldn't happen */
915 WARN_ON_ONCE(1);
916 }
917
918 mutex_unlock(&mvm->mutex);
919}
920
921static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif,
923 struct cfg80211_scan_request *req)
924{
925 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
926 int ret;
927
928 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
929 return -EINVAL;
930
931 mutex_lock(&mvm->mutex);
932
933 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
934 ret = iwl_mvm_scan_request(mvm, vif, req);
935 else
936 ret = -EBUSY;
937
938 mutex_unlock(&mvm->mutex);
939
940 return ret;
941}
942
943static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
944 struct ieee80211_vif *vif)
945{
946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
947
948 mutex_lock(&mvm->mutex);
949
950 iwl_mvm_cancel_scan(mvm);
951
952 mutex_unlock(&mvm->mutex);
953}
954
955static void
956iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
957 struct ieee80211_sta *sta, u16 tid,
958 int num_frames,
959 enum ieee80211_frame_release_type reason,
960 bool more_data)
961{
962 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 963
964 /* TODO: how do we tell the fw to send frames for a specific TID */
965
966 /*
967 * The fw will send EOSP notification when the last frame will be
968 * transmitted.
969 */
9cc40712 970 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
8ca151b5
JB		 971}
972
973static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
974 struct ieee80211_vif *vif,
975 enum sta_notify_cmd cmd,
976 struct ieee80211_sta *sta)
977{
978 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
979 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
980
981 switch (cmd) {
982 case STA_NOTIFY_SLEEP:
983 if (atomic_read(&mvmsta->pending_frames) > 0)
984 ieee80211_sta_block_awake(hw, sta, true);
985 /*
986 * The fw updates the STA to be asleep. Tx packets on the Tx
987 * queues to this station will not be transmitted. The fw will
988 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
989 */
990 break;
991 case STA_NOTIFY_AWAKE:
881acd89 992 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 993 break;
9cc40712 994 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 995 break;
996 default:
997 break;
998 }
999}
1000
1001static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1002 struct ieee80211_vif *vif,
1003 struct ieee80211_sta *sta,
1004 enum ieee80211_sta_state old_state,
1005 enum ieee80211_sta_state new_state)
1006{
1007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1008 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1009 int ret;
1010
1011 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1012 sta->addr, old_state, new_state);
1013
1014 /* this would be a mac80211 bug ... but don't crash */
1015 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1016 return -EINVAL;
1017
1018 /* if a STA is being removed, reuse its ID */
1019 flush_work(&mvm->sta_drained_wk);
1020
1021 mutex_lock(&mvm->mutex);
1022 if (old_state == IEEE80211_STA_NOTEXIST &&
1023 new_state == IEEE80211_STA_NONE) {
1024 ret = iwl_mvm_add_sta(mvm, vif, sta);
1025 } else if (old_state == IEEE80211_STA_NONE &&
1026 new_state == IEEE80211_STA_AUTH) {
1027 ret = 0;
1028 } else if (old_state == IEEE80211_STA_AUTH &&
1029 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 1030 ret = iwl_mvm_update_sta(mvm, vif, sta);
1031 if (ret == 0)
1032 iwl_mvm_rs_rate_init(mvm, sta,
1033 mvmvif->phy_ctxt->channel->band);
8ca151b5
JB		 1034 } else if (old_state == IEEE80211_STA_ASSOC &&
1035 new_state == IEEE80211_STA_AUTHORIZED) {
7df15b1e
HG		 1036 /* enable beacon filtering */
1037 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
8ca151b5
JB		 1038 ret = 0;
1039 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1040 new_state == IEEE80211_STA_ASSOC) {
7df15b1e
HG		 1041 /* disable beacon filtering */
1042 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
8ca151b5
JB		 1043 ret = 0;
1044 } else if (old_state == IEEE80211_STA_ASSOC &&
1045 new_state == IEEE80211_STA_AUTH) {
1046 ret = 0;
1047 } else if (old_state == IEEE80211_STA_AUTH &&
1048 new_state == IEEE80211_STA_NONE) {
1049 ret = 0;
1050 } else if (old_state == IEEE80211_STA_NONE &&
1051 new_state == IEEE80211_STA_NOTEXIST) {
1052 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1053 } else {
1054 ret = -EIO;
1055 }
1056 mutex_unlock(&mvm->mutex);
1057
1058 return ret;
1059}
1060
1061static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1062{
1063 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1064
1065 mvm->rts_threshold = value;
1066
1067 return 0;
1068}
1069
1070static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1071 struct ieee80211_vif *vif, u16 ac,
1072 const struct ieee80211_tx_queue_params *params)
1073{
1074 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1075 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1076
1077 mvmvif->queue_params[ac] = *params;
1078
1079 /*
1080 * No need to update right away, we'll get BSS_CHANGED_QOS
1081 * The exception is P2P_DEVICE interface which needs immediate update.
1082 */
1083 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1084 int ret;
1085
1086 mutex_lock(&mvm->mutex);
1087 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1088 mutex_unlock(&mvm->mutex);
1089 return ret;
1090 }
1091 return 0;
1092}
1093
1094static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1095 struct ieee80211_vif *vif)
1096{
1097 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1098 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1099 200 + vif->bss_conf.beacon_int);
1100 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1101 100 + vif->bss_conf.beacon_int);
1102
1103 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1104 return;
1105
1106 mutex_lock(&mvm->mutex);
1107 /* Try really hard to protect the session and hear a beacon */
1108 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1109 mutex_unlock(&mvm->mutex);
1110}
1111
1112static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1113 enum set_key_cmd cmd,
1114 struct ieee80211_vif *vif,
1115 struct ieee80211_sta *sta,
1116 struct ieee80211_key_conf *key)
1117{
1118 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1119 int ret;
1120
1121 if (iwlwifi_mod_params.sw_crypto) {
1122 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1123 return -EOPNOTSUPP;
1124 }
1125
1126 switch (key->cipher) {
1127 case WLAN_CIPHER_SUITE_TKIP:
1128 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1129 /* fall-through */
1130 case WLAN_CIPHER_SUITE_CCMP:
1131 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1132 break;
1133 case WLAN_CIPHER_SUITE_AES_CMAC:
1134 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1135 break;
1136 case WLAN_CIPHER_SUITE_WEP40:
1137 case WLAN_CIPHER_SUITE_WEP104:
1138 /*
1139 * Support for TX only, at least for now, so accept
1140 * the key and do nothing else. Then mac80211 will
1141 * pass it for TX but we don't have to use it for RX.
1142 */
1143 return 0;
1144 default:
1145 return -EOPNOTSUPP;
1146 }
1147
1148 mutex_lock(&mvm->mutex);
1149
1150 switch (cmd) {
1151 case SET_KEY:
6caffd4f
JB		 1152 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1153 /* GTK on AP interface is a TX-only key, return 0 */
1154 ret = 0;
1155 key->hw_key_idx = STA_KEY_IDX_INVALID;
1156 break;
1157 }
1158
8ca151b5
JB		 1159 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1160 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1161 if (ret) {
1162 IWL_WARN(mvm, "set key failed\n");
1163 /*
1164 * can't add key for RX, but we don't need it
1165 * in the device for TX so still return 0
1166 */
6caffd4f 1167 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 1168 ret = 0;
1169 }
1170
1171 break;
1172 case DISABLE_KEY:
6caffd4f
JB		 1173 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1174 ret = 0;
1175 break;
1176 }
1177
8ca151b5
JB		 1178 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1179 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1180 break;
1181 default:
1182 ret = -EINVAL;
1183 }
1184
1185 mutex_unlock(&mvm->mutex);
1186 return ret;
1187}
1188
1189static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1190 struct ieee80211_vif *vif,
1191 struct ieee80211_key_conf *keyconf,
1192 struct ieee80211_sta *sta,
1193 u32 iv32, u16 *phase1key)
1194{
1195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1196
1197 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1198}
1199
1200
1201static int iwl_mvm_roc(struct ieee80211_hw *hw,
1202 struct ieee80211_vif *vif,
1203 struct ieee80211_channel *channel,
d339d5ca
IP		 1204 int duration,
1205 enum ieee80211_roc_type type)
8ca151b5
JB		 1206{
1207 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 1208 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5
JB		 1209 struct cfg80211_chan_def chandef;
1210 int ret;
1211
1212 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1213 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1214 return -EINVAL;
1215 }
1216
d339d5ca
IP		 1217 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1218 duration, type);
8ca151b5
JB		 1219
1220 mutex_lock(&mvm->mutex);
1221
1222 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
fe0f2de3 1223 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
8ca151b5
JB		 1224 &chandef, 1, 1);
1225
1226 /* Schedule the time events */
e635c797 1227 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5
JB		 1228
1229 mutex_unlock(&mvm->mutex);
1230 IWL_DEBUG_MAC80211(mvm, "leave\n");
1231
1232 return ret;
1233}
1234
1235static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1236{
1237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238
1239 IWL_DEBUG_MAC80211(mvm, "enter\n");
1240
1241 mutex_lock(&mvm->mutex);
1242 iwl_mvm_stop_p2p_roc(mvm);
1243 mutex_unlock(&mvm->mutex);
1244
1245 IWL_DEBUG_MAC80211(mvm, "leave\n");
1246 return 0;
1247}
1248
1249static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1250 struct ieee80211_chanctx_conf *ctx)
1251{
1252 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1253 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1254 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 1255 int ret;
1256
fe0f2de3
IP		 1257 IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1258
8ca151b5 1259 mutex_lock(&mvm->mutex);
fe0f2de3
IP		 1260 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1261 if (!phy_ctxt) {
1262 ret = -ENOSPC;
1263 goto out;
1264 }
8ca151b5 1265
8ca151b5
JB		 1266 ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1267 ctx->rx_chains_static,
1268 ctx->rx_chains_dynamic);
fe0f2de3
IP		 1269 if (ret) {
1270 IWL_ERR(mvm, "Failed to add PHY context\n");
1271 goto out;
1272 }
1273
1274 *phy_ctxt_id = phy_ctxt->id;
1275out:
8ca151b5
JB		 1276 mutex_unlock(&mvm->mutex);
1277 return ret;
1278}
1279
1280static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1281 struct ieee80211_chanctx_conf *ctx)
1282{
1283 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1284 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1285 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 1286
1287 mutex_lock(&mvm->mutex);
fe0f2de3 1288 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
8ca151b5
JB		 1289 mutex_unlock(&mvm->mutex);
1290}
1291
1292static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1293 struct ieee80211_chanctx_conf *ctx,
1294 u32 changed)
1295{
1296 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1297 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1298 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 1299
1300 mutex_lock(&mvm->mutex);
1301 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1302 ctx->rx_chains_static,
1303 ctx->rx_chains_dynamic);
1304 mutex_unlock(&mvm->mutex);
1305}
1306
1307static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1308 struct ieee80211_vif *vif,
1309 struct ieee80211_chanctx_conf *ctx)
1310{
1311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1312 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1313 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 1314 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1315 int ret;
1316
1317 mutex_lock(&mvm->mutex);
1318
fe0f2de3 1319 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 1320
1321 switch (vif->type) {
1322 case NL80211_IFTYPE_AP:
1323 /*
1324 * The AP binding flow is handled as part of the start_ap flow
1325 * (in bss_info_changed).
1326 */
1327 ret = 0;
1328 goto out_unlock;
1329 case NL80211_IFTYPE_STATION:
1330 case NL80211_IFTYPE_ADHOC:
1331 case NL80211_IFTYPE_MONITOR:
1332 break;
1333 default:
1334 ret = -EINVAL;
1335 goto out_unlock;
1336 }
1337
1338 ret = iwl_mvm_binding_add_vif(mvm, vif);
1339 if (ret)
1340 goto out_unlock;
1341
1342 /*
1343 * Setting the quota at this stage is only required for monitor
1344 * interfaces. For the other types, the bss_info changed flow
1345 * will handle quota settings.
1346 */
1347 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 1348 mvmvif->monitor_active = true;
8ca151b5
JB		 1349 ret = iwl_mvm_update_quotas(mvm, vif);
1350 if (ret)
1351 goto out_remove_binding;
1352 }
1353
1354 goto out_unlock;
1355
1356 out_remove_binding:
1357 iwl_mvm_binding_remove_vif(mvm, vif);
1358 out_unlock:
1359 mutex_unlock(&mvm->mutex);
1360 if (ret)
1361 mvmvif->phy_ctxt = NULL;
1362 return ret;
1363}
1364
1365static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1366 struct ieee80211_vif *vif,
1367 struct ieee80211_chanctx_conf *ctx)
1368{
1369 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1370 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1371
1372 mutex_lock(&mvm->mutex);
1373
1374 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1375
1376 if (vif->type == NL80211_IFTYPE_AP)
1377 goto out_unlock;
1378
8ca151b5
JB		 1379 switch (vif->type) {
1380 case NL80211_IFTYPE_MONITOR:
1e1391ca
IP		 1381 mvmvif->monitor_active = false;
1382 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1383 break;
1384 default:
1385 break;
1386 }
1387
1e1391ca 1388 iwl_mvm_binding_remove_vif(mvm, vif);
8ca151b5
JB		 1389out_unlock:
1390 mvmvif->phy_ctxt = NULL;
1391 mutex_unlock(&mvm->mutex);
1392}
1393
1394static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1395 struct ieee80211_sta *sta,
1396 bool set)
1397{
1398 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1399 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1400
1401 if (!mvm_sta || !mvm_sta->vif) {
1402 IWL_ERR(mvm, "Station is not associated to a vif\n");
1403 return -EINVAL;
1404 }
1405
1406 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1407}
1408
2b76ef13
EG		 1409static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1410 struct ieee80211_vif *vif,
1411 enum ieee80211_rssi_event rssi_event)
1412{
1413 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1414
1415 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1416}
1417
8ca151b5
JB		 1418struct ieee80211_ops iwl_mvm_hw_ops = {
1419 .tx = iwl_mvm_mac_tx,
1420 .ampdu_action = iwl_mvm_mac_ampdu_action,
1421 .start = iwl_mvm_mac_start,
1422 .restart_complete = iwl_mvm_mac_restart_complete,
1423 .stop = iwl_mvm_mac_stop,
1424 .add_interface = iwl_mvm_mac_add_interface,
1425 .remove_interface = iwl_mvm_mac_remove_interface,
1426 .config = iwl_mvm_mac_config,
1427 .configure_filter = iwl_mvm_configure_filter,
1428 .bss_info_changed = iwl_mvm_bss_info_changed,
1429 .hw_scan = iwl_mvm_mac_hw_scan,
1430 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1431 .sta_state = iwl_mvm_mac_sta_state,
1432 .sta_notify = iwl_mvm_mac_sta_notify,
1433 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1434 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1435 .conf_tx = iwl_mvm_mac_conf_tx,
1436 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1437 .set_key = iwl_mvm_mac_set_key,
1438 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1439 .remain_on_channel = iwl_mvm_roc,
1440 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2b76ef13 1441 .rssi_callback = iwl_mvm_mac_rssi_callback,
8ca151b5
JB		 1442
1443 .add_chanctx = iwl_mvm_add_chanctx,
1444 .remove_chanctx = iwl_mvm_remove_chanctx,
1445 .change_chanctx = iwl_mvm_change_chanctx,
1446 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1447 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1448
1449 .start_ap = iwl_mvm_start_ap,
1450 .stop_ap = iwl_mvm_stop_ap,
1451
1452 .set_tim = iwl_mvm_set_tim,
1453
1454#ifdef CONFIG_PM_SLEEP
1455 /* look at d3.c */
1456 .suspend = iwl_mvm_suspend,
1457 .resume = iwl_mvm_resume,
1458 .set_wakeup = iwl_mvm_set_wakeup,
1459 .set_rekey_data = iwl_mvm_set_rekey_data,
1460#if IS_ENABLED(CONFIG_IPV6)
1461 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1462#endif
1463 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1464#endif
1465};
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