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mac80211: fix powersave bug and clean up ieee80211_rx_bss_info
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
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 },
3c15a0fb
JB		 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 },
8ca151b5
JB		 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 154 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed
HG		 155 IEEE80211_HW_TIMING_BEACON_ONLY |
156 IEEE80211_HW_CONNECTION_MONITOR;
8ca151b5 157
398e8c6c
IP		 158 hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
159 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
8ca151b5
JB		 160 hw->rate_control_algorithm = "iwl-mvm-rs";
161
162 /*
163 * Enable 11w if advertised by firmware and software crypto
164 * is not enabled (as the firmware will interpret some mgmt
165 * packets, so enabling it with software crypto isn't safe)
166 */
167 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
168 !iwlwifi_mod_params.sw_crypto)
169 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
170
171 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
172 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 173 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 174
175 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 176 BIT(NL80211_IFTYPE_P2P_CLIENT) |
177 BIT(NL80211_IFTYPE_AP) |
178 BIT(NL80211_IFTYPE_P2P_GO) |
179 BIT(NL80211_IFTYPE_P2P_DEVICE);
8ca151b5
JB		 180
181 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
182 WIPHY_FLAG_DISABLE_BEACON_HINTS |
183 WIPHY_FLAG_IBSS_RSN;
184
185 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
186 hw->wiphy->n_iface_combinations =
187 ARRAY_SIZE(iwl_mvm_iface_combinations);
188
c451e6d4 189 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 190 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
191
192 /* Extract MAC address */
193 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
194 hw->wiphy->addresses = mvm->addresses;
195 hw->wiphy->n_addresses = 1;
831e85f3
IP		 196
197 /* Extract additional MAC addresses if available */
198 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
199 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
200
201 for (i = 1; i < num_mac; i++) {
202 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 203 ETH_ALEN);
831e85f3 204 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 205 hw->wiphy->n_addresses++;
206 }
207
fe0f2de3
IP		 208 iwl_mvm_reset_phy_ctxts(mvm);
209
8ca151b5
JB		 210 /* we create the 802.11 header and a max-length SSID element */
211 hw->wiphy->max_scan_ie_len =
212 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
213 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
214
215 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
216 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
217 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
218 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
219 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
220 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
221
222 hw->wiphy->hw_version = mvm->trans->hw_id;
223
ade50652 224 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 225 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
226 else
227 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
228
229 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
230 NL80211_FEATURE_P2P_GO_OPPPS;
231
232 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
233
234#ifdef CONFIG_PM_SLEEP
235 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
236 mvm->trans->ops->d3_suspend &&
237 mvm->trans->ops->d3_resume &&
238 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 239 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
240 WIPHY_WOWLAN_DISCONNECT |
241 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
242 WIPHY_WOWLAN_RFKILL_RELEASE;
8ca151b5 243 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 244 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
245 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
246 WIPHY_WOWLAN_4WAY_HANDSHAKE;
247
248 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
249 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
250 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
251 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
252 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 253 }
254#endif
255
256 ret = iwl_mvm_leds_init(mvm);
257 if (ret)
258 return ret;
259
260 return ieee80211_register_hw(mvm->hw);
261}
262
263static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
264 struct ieee80211_tx_control *control,
265 struct sk_buff *skb)
266{
267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
268
9ee718aa
EL		 269 if (iwl_mvm_is_radio_killed(mvm)) {
270 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 271 goto drop;
272 }
273
398e8c6c 274 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
8ca151b5
JB		 275 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
276 goto drop;
277
278 if (control->sta) {
279 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
280 goto drop;
281 return;
282 }
283
284 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
285 goto drop;
286 return;
287 drop:
288 ieee80211_free_txskb(hw, skb);
289}
290
291static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
292 struct ieee80211_vif *vif,
293 enum ieee80211_ampdu_mlme_action action,
294 struct ieee80211_sta *sta, u16 tid,
295 u16 *ssn, u8 buf_size)
296{
297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
298 int ret;
299
300 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
301 sta->addr, tid, action);
302
303 if (!(mvm->nvm_data->sku_cap_11n_enable))
304 return -EACCES;
305
306 mutex_lock(&mvm->mutex);
307
308 switch (action) {
309 case IEEE80211_AMPDU_RX_START:
310 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
311 ret = -EINVAL;
312 break;
313 }
314 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
315 break;
316 case IEEE80211_AMPDU_RX_STOP:
317 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
318 break;
319 case IEEE80211_AMPDU_TX_START:
5d158efa
EG		 320 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
321 ret = -EINVAL;
322 break;
323 }
8ca151b5
JB		 324 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
325 break;
326 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 327 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
328 break;
8ca151b5
JB		 329 case IEEE80211_AMPDU_TX_STOP_FLUSH:
330 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 331 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 332 break;
333 case IEEE80211_AMPDU_TX_OPERATIONAL:
334 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
335 break;
336 default:
337 WARN_ON_ONCE(1);
338 ret = -EINVAL;
339 break;
340 }
341 mutex_unlock(&mvm->mutex);
342
343 return ret;
344}
345
346static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
347 struct ieee80211_vif *vif)
348{
349 struct iwl_mvm *mvm = data;
350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
351
352 mvmvif->uploaded = false;
353 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
354
355 /* does this make sense at all? */
356 mvmvif->color++;
357
358 spin_lock_bh(&mvm->time_event_lock);
359 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
360 spin_unlock_bh(&mvm->time_event_lock);
361
fe0f2de3 362 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 363}
364
365static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
366{
367 iwl_trans_stop_device(mvm->trans);
368 iwl_trans_stop_hw(mvm->trans, false);
369
370 mvm->scan_status = IWL_MVM_SCAN_NONE;
371
372 /* just in case one was running */
373 ieee80211_remain_on_channel_expired(mvm->hw);
374
375 ieee80211_iterate_active_interfaces_atomic(
376 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
377 iwl_mvm_cleanup_iterator, mvm);
378
fe0f2de3
IP		 379 mvm->p2p_device_vif = NULL;
380
381 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 382 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
383 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
384
385 ieee80211_wake_queues(mvm->hw);
386
387 mvm->vif_count = 0;
388}
389
390static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
391{
392 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
393 int ret;
394
395 mutex_lock(&mvm->mutex);
396
397 /* Clean up some internal and mac80211 state on restart */
398 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
399 iwl_mvm_restart_cleanup(mvm);
400
401 ret = iwl_mvm_up(mvm);
402 mutex_unlock(&mvm->mutex);
403
404 return ret;
405}
406
407static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
408{
409 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
410 int ret;
411
412 mutex_lock(&mvm->mutex);
413
414 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
415 ret = iwl_mvm_update_quotas(mvm, NULL);
416 if (ret)
417 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
418 ret);
419
420 mutex_unlock(&mvm->mutex);
421}
422
423static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
424{
425 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
426
427 flush_work(&mvm->async_handlers_wk);
428
429 mutex_lock(&mvm->mutex);
430 /* async_handlers_wk is now blocked */
431
432 /*
433 * The work item could be running or queued if the
434 * ROC time event stops just as we get here.
435 */
436 cancel_work_sync(&mvm->roc_done_wk);
437
438 iwl_trans_stop_device(mvm->trans);
439 iwl_trans_stop_hw(mvm->trans, false);
440
441 iwl_mvm_async_handlers_purge(mvm);
442 /* async_handlers_list is empty and will stay empty: HW is stopped */
443
444 /* the fw is stopped, the aux sta is dead: clean up driver state */
445 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
446
447 mutex_unlock(&mvm->mutex);
448
449 /*
450 * The worker might have been waiting for the mutex, let it run and
451 * discover that its list is now empty.
452 */
453 cancel_work_sync(&mvm->async_handlers_wk);
454}
455
456static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
457 struct ieee80211_vif *vif)
458{
459 struct iwl_mvm *mvm = data;
460 int ret;
461
462 ret = iwl_mvm_power_disable(mvm, vif);
463 if (ret)
464 IWL_ERR(mvm, "failed to disable power management\n");
465}
466
467static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
468 struct ieee80211_vif *vif)
469{
470 struct iwl_mvm *mvm = data;
471
472 iwl_mvm_power_update_mode(mvm, vif);
473}
474
fe0f2de3
IP		 475static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
476{
477 u16 i;
478
479 lockdep_assert_held(&mvm->mutex);
480
481 for (i = 0; i < NUM_PHY_CTX; i++)
482 if (!mvm->phy_ctxts[i].ref)
483 return &mvm->phy_ctxts[i];
484
485 IWL_ERR(mvm, "No available PHY context\n");
486 return NULL;
487}
488
8ca151b5
JB		 489static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
490 struct ieee80211_vif *vif)
491{
492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
493 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
494 int ret;
495
496 /*
497 * Not much to do here. The stack will not allow interface
498 * types or combinations that we didn't advertise, so we
499 * don't really have to check the types.
500 */
501
502 mutex_lock(&mvm->mutex);
503
504 /* Allocate resources for the MAC context, and add it the the fw */
505 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
506 if (ret)
507 goto out_unlock;
508
509 /*
510 * The AP binding flow can be done only after the beacon
511 * template is configured (which happens only in the mac80211
512 * start_ap() flow), and adding the broadcast station can happen
513 * only after the binding.
514 * In addition, since modifying the MAC before adding a bcast
515 * station is not allowed by the FW, delay the adding of MAC context to
516 * the point where we can also add the bcast station.
517 * In short: there's not much we can do at this point, other than
518 * allocating resources :)
519 */
520 if (vif->type == NL80211_IFTYPE_AP) {
521 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
522 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
523 qmask);
524 if (ret) {
525 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
526 goto out_release;
527 }
528
529 goto out_unlock;
530 }
531
532 /*
533 * TODO: remove this temporary code.
534 * Currently MVM FW supports power management only on single MAC.
5ee2b215
AB		 535 * If new interface added, disable PM on existing interface.
536 * P2P device is a special case, since it is handled by FW similary to
537 * scan. If P2P deviced is added, PM remains enabled on existing
538 * interface.
8ca151b5
JB		 539 * Note: the method below does not count the new interface being added
540 * at this moment.
541 */
5ee2b215
AB		 542 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
543 mvm->vif_count++;
8ca151b5
JB		 544 if (mvm->vif_count > 1) {
545 IWL_DEBUG_MAC80211(mvm,
546 "Disable power on existing interfaces\n");
5360cfb2 547 ieee80211_iterate_active_interfaces_atomic(
8ca151b5
JB		 548 mvm->hw,
549 IEEE80211_IFACE_ITER_NORMAL,
550 iwl_mvm_pm_disable_iterator, mvm);
551 }
552
553 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
554 if (ret)
555 goto out_release;
556
557 /*
558 * Update power state on the new interface. Admittedly, based on
559 * mac80211 logics this power update will disable power management
560 */
561 iwl_mvm_power_update_mode(mvm, vif);
562
7df15b1e
HG		 563 /* beacon filtering */
564 if (!mvm->bf_allowed_vif &&
565 vif->type == NL80211_IFTYPE_STATION && !vif->p2p){
566 mvm->bf_allowed_vif = mvmvif;
567 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
568 }
569
570 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
571 if (ret)
572 goto out_release;
573
8ca151b5
JB		 574 /*
575 * P2P_DEVICE interface does not have a channel context assigned to it,
576 * so a dedicated PHY context is allocated to it and the corresponding
577 * MAC context is bound to it at this stage.
578 */
579 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 580
fe0f2de3
IP		 581 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
582 if (!mvmvif->phy_ctxt) {
583 ret = -ENOSPC;
8ca151b5 584 goto out_remove_mac;
fe0f2de3 585 }
8ca151b5 586
53a9d61e 587 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 588 ret = iwl_mvm_binding_add_vif(mvm, vif);
589 if (ret)
53a9d61e 590 goto out_unref_phy;
8ca151b5
JB		 591
592 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
593 if (ret)
594 goto out_unbind;
595
596 /* Save a pointer to p2p device vif, so it can later be used to
597 * update the p2p device MAC when a GO is started/stopped */
598 mvm->p2p_device_vif = vif;
599 }
600
63494374 601 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 602 goto out_unlock;
603
604 out_unbind:
605 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 606 out_unref_phy:
fe0f2de3 607 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 608 out_remove_mac:
609 mvmvif->phy_ctxt = NULL;
610 iwl_mvm_mac_ctxt_remove(mvm, vif);
611 out_release:
612 /*
613 * TODO: remove this temporary code.
614 * Currently MVM FW supports power management only on single MAC.
5ee2b215 615 * Check if only one additional interface remains after releasing
8ca151b5
JB		 616 * current one. Update power mode on the remaining interface.
617 */
5ee2b215
AB		 618 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
619 mvm->vif_count--;
8ca151b5
JB		 620 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
621 mvm->vif_count);
622 if (mvm->vif_count == 1) {
623 ieee80211_iterate_active_interfaces(
624 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
625 iwl_mvm_power_update_iterator, mvm);
626 }
627 iwl_mvm_mac_ctxt_release(mvm, vif);
628 out_unlock:
629 mutex_unlock(&mvm->mutex);
630
631 return ret;
632}
633
38a12b5b
JB		 634static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
635 struct ieee80211_vif *vif)
8ca151b5 636{
8ca151b5
JB		 637 u32 tfd_msk = 0, ac;
638
639 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
640 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
641 tfd_msk |= BIT(vif->hw_queue[ac]);
642
643 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
644 tfd_msk |= BIT(vif->cab_queue);
645
646 if (tfd_msk) {
647 mutex_lock(&mvm->mutex);
648 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
649 mutex_unlock(&mvm->mutex);
650 }
651
652 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
653 /*
654 * Flush the ROC worker which will flush the OFFCHANNEL queue.
655 * We assume here that all the packets sent to the OFFCHANNEL
656 * queue are sent in ROC session.
657 */
658 flush_work(&mvm->roc_done_wk);
659 } else {
660 /*
661 * By now, all the AC queues are empty. The AGG queues are
662 * empty too. We already got all the Tx responses for all the
663 * packets in the queues. The drain work can have been
664 * triggered. Flush it. This work item takes the mutex, so kill
665 * it before we take it.
666 */
667 flush_work(&mvm->sta_drained_wk);
668 }
38a12b5b
JB		 669}
670
671static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
672 struct ieee80211_vif *vif)
673{
674 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
675 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
676
677 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 678
679 mutex_lock(&mvm->mutex);
680
7df15b1e
HG		 681 if (mvm->bf_allowed_vif == mvmvif) {
682 mvm->bf_allowed_vif = NULL;
683 vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
684 }
685
63494374
JB		 686 iwl_mvm_vif_dbgfs_clean(mvm, vif);
687
8ca151b5
JB		 688 /*
689 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 690 * interface is be handled as part of the stop_ap flow.
8ca151b5
JB		 691 */
692 if (vif->type == NL80211_IFTYPE_AP) {
693 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
694 goto out_release;
695 }
696
697 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
698 mvm->p2p_device_vif = NULL;
699 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
700 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 701 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 702 mvmvif->phy_ctxt = NULL;
703 }
704
705 /*
706 * TODO: remove this temporary code.
707 * Currently MVM FW supports power management only on single MAC.
708 * Check if only one additional interface remains after removing
709 * current one. Update power mode on the remaining interface.
710 */
5ee2b215 711 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5
JB		 712 mvm->vif_count--;
713 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
714 mvm->vif_count);
715 if (mvm->vif_count == 1) {
716 ieee80211_iterate_active_interfaces(
717 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
718 iwl_mvm_power_update_iterator, mvm);
719 }
720
721 iwl_mvm_mac_ctxt_remove(mvm, vif);
722
723out_release:
724 iwl_mvm_mac_ctxt_release(mvm, vif);
725 mutex_unlock(&mvm->mutex);
726}
727
728static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
729{
730 return 0;
731}
732
733static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
734 unsigned int changed_flags,
735 unsigned int *total_flags,
736 u64 multicast)
737{
738 *total_flags = 0;
739}
740
51b6b9e0
EG		 741static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
742 struct ieee80211_vif *vif)
743{
744 struct iwl_mcast_filter_cmd mcast_filter_cmd = {
745 .pass_all = 1,
746 };
747
748 memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
749
750 return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
751 sizeof(mcast_filter_cmd),
752 &mcast_filter_cmd);
753}
754
8ca151b5
JB		 755static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
756 struct ieee80211_vif *vif,
757 struct ieee80211_bss_conf *bss_conf,
758 u32 changes)
759{
760 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
761 int ret;
762
763 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
764 if (ret)
765 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
766
767 if (changes & BSS_CHANGED_ASSOC) {
768 if (bss_conf->assoc) {
769 /* add quota for this interface */
770 ret = iwl_mvm_update_quotas(mvm, vif);
771 if (ret) {
772 IWL_ERR(mvm, "failed to update quotas\n");
773 return;
774 }
9166b1ee 775 iwl_mvm_bt_coex_vif_assoc(mvm, vif);
51b6b9e0 776 iwl_mvm_configure_mcast_filter(mvm, vif);
8ca151b5
JB		 777 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
778 /* remove AP station now that the MAC is unassoc */
779 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
780 if (ret)
781 IWL_ERR(mvm, "failed to remove AP station\n");
782 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
783 /* remove quota for this interface */
784 ret = iwl_mvm_update_quotas(mvm, NULL);
785 if (ret)
786 IWL_ERR(mvm, "failed to update quotas\n");
787 }
210a544e
JB		 788 } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
789 /*
790 * We received a beacon _after_ association so
791 * remove the session protection.
792 */
793 iwl_mvm_remove_time_event(mvm, mvmvif,
794 &mvmvif->time_event_data);
8ca151b5
JB		 795 } else if (changes & BSS_CHANGED_PS) {
796 /*
797 * TODO: remove this temporary code.
798 * Currently MVM FW supports power management only on single
799 * MAC. Avoid power mode update if more than one interface
800 * is active.
801 */
802 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
803 mvm->vif_count);
804 if (mvm->vif_count == 1) {
805 ret = iwl_mvm_power_update_mode(mvm, vif);
806 if (ret)
807 IWL_ERR(mvm, "failed to update power mode\n");
808 }
809 }
810}
811
812static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
813{
814 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
816 int ret;
817
818 mutex_lock(&mvm->mutex);
819
820 /* Send the beacon template */
821 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
822 if (ret)
823 goto out_unlock;
824
825 /* Add the mac context */
826 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
827 if (ret)
828 goto out_unlock;
829
830 /* Perform the binding */
831 ret = iwl_mvm_binding_add_vif(mvm, vif);
832 if (ret)
833 goto out_remove;
834
835 mvmvif->ap_active = true;
836
837 /* Send the bcast station. At this stage the TBTT and DTIM time events
838 * are added and applied to the scheduler */
839 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
840 if (ret)
841 goto out_unbind;
842
843 ret = iwl_mvm_update_quotas(mvm, vif);
844 if (ret)
845 goto out_rm_bcast;
846
847 /* Need to update the P2P Device MAC */
848 if (vif->p2p && mvm->p2p_device_vif)
849 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
850
851 mutex_unlock(&mvm->mutex);
852 return 0;
853
854out_rm_bcast:
855 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
856out_unbind:
857 iwl_mvm_binding_remove_vif(mvm, vif);
858out_remove:
859 iwl_mvm_mac_ctxt_remove(mvm, vif);
860out_unlock:
861 mutex_unlock(&mvm->mutex);
862 return ret;
863}
864
865static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
866{
867 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
868 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
869
38a12b5b
JB		 870 iwl_mvm_prepare_mac_removal(mvm, vif);
871
8ca151b5
JB		 872 mutex_lock(&mvm->mutex);
873
874 mvmvif->ap_active = false;
875
876 /* Need to update the P2P Device MAC */
877 if (vif->p2p && mvm->p2p_device_vif)
878 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
879
880 iwl_mvm_update_quotas(mvm, NULL);
881 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
882 iwl_mvm_binding_remove_vif(mvm, vif);
883 iwl_mvm_mac_ctxt_remove(mvm, vif);
884
885 mutex_unlock(&mvm->mutex);
886}
887
888static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
889 struct ieee80211_vif *vif,
890 struct ieee80211_bss_conf *bss_conf,
891 u32 changes)
892{
893 /* Need to send a new beacon template to the FW */
894 if (changes & BSS_CHANGED_BEACON) {
895 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
896 IWL_WARN(mvm, "Failed updating beacon data\n");
897 }
898}
899
900static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
901 struct ieee80211_vif *vif,
902 struct ieee80211_bss_conf *bss_conf,
903 u32 changes)
904{
905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
906
907 mutex_lock(&mvm->mutex);
908
909 switch (vif->type) {
910 case NL80211_IFTYPE_STATION:
911 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
912 break;
913 case NL80211_IFTYPE_AP:
914 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
915 break;
916 default:
917 /* shouldn't happen */
918 WARN_ON_ONCE(1);
919 }
920
921 mutex_unlock(&mvm->mutex);
922}
923
924static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
925 struct ieee80211_vif *vif,
926 struct cfg80211_scan_request *req)
927{
928 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
929 int ret;
930
931 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
932 return -EINVAL;
933
934 mutex_lock(&mvm->mutex);
935
936 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
937 ret = iwl_mvm_scan_request(mvm, vif, req);
938 else
939 ret = -EBUSY;
940
941 mutex_unlock(&mvm->mutex);
942
943 return ret;
944}
945
946static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
947 struct ieee80211_vif *vif)
948{
949 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
950
951 mutex_lock(&mvm->mutex);
952
953 iwl_mvm_cancel_scan(mvm);
954
955 mutex_unlock(&mvm->mutex);
956}
957
958static void
959iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
960 struct ieee80211_sta *sta, u16 tid,
961 int num_frames,
962 enum ieee80211_frame_release_type reason,
963 bool more_data)
964{
965 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 966
967 /* TODO: how do we tell the fw to send frames for a specific TID */
968
969 /*
970 * The fw will send EOSP notification when the last frame will be
971 * transmitted.
972 */
9cc40712 973 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
8ca151b5
JB		 974}
975
976static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
977 struct ieee80211_vif *vif,
978 enum sta_notify_cmd cmd,
979 struct ieee80211_sta *sta)
980{
981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
982 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
983
984 switch (cmd) {
985 case STA_NOTIFY_SLEEP:
e3d4bc8c 986 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5
JB		 987 ieee80211_sta_block_awake(hw, sta, true);
988 /*
989 * The fw updates the STA to be asleep. Tx packets on the Tx
990 * queues to this station will not be transmitted. The fw will
991 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
992 */
993 break;
994 case STA_NOTIFY_AWAKE:
881acd89 995 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 996 break;
9cc40712 997 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 998 break;
999 default:
1000 break;
1001 }
1002}
1003
1004static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1005 struct ieee80211_vif *vif,
1006 struct ieee80211_sta *sta,
1007 enum ieee80211_sta_state old_state,
1008 enum ieee80211_sta_state new_state)
1009{
1010 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1011 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1012 int ret;
1013
1014 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1015 sta->addr, old_state, new_state);
1016
1017 /* this would be a mac80211 bug ... but don't crash */
1018 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1019 return -EINVAL;
1020
1021 /* if a STA is being removed, reuse its ID */
1022 flush_work(&mvm->sta_drained_wk);
1023
1024 mutex_lock(&mvm->mutex);
1025 if (old_state == IEEE80211_STA_NOTEXIST &&
1026 new_state == IEEE80211_STA_NONE) {
1027 ret = iwl_mvm_add_sta(mvm, vif, sta);
1028 } else if (old_state == IEEE80211_STA_NONE &&
1029 new_state == IEEE80211_STA_AUTH) {
1030 ret = 0;
1031 } else if (old_state == IEEE80211_STA_AUTH &&
1032 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 1033 ret = iwl_mvm_update_sta(mvm, vif, sta);
1034 if (ret == 0)
1035 iwl_mvm_rs_rate_init(mvm, sta,
1036 mvmvif->phy_ctxt->channel->band);
8ca151b5
JB		 1037 } else if (old_state == IEEE80211_STA_ASSOC &&
1038 new_state == IEEE80211_STA_AUTHORIZED) {
7df15b1e
HG		 1039 /* enable beacon filtering */
1040 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
8ca151b5
JB		 1041 ret = 0;
1042 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1043 new_state == IEEE80211_STA_ASSOC) {
7df15b1e
HG		 1044 /* disable beacon filtering */
1045 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
8ca151b5
JB		 1046 ret = 0;
1047 } else if (old_state == IEEE80211_STA_ASSOC &&
1048 new_state == IEEE80211_STA_AUTH) {
1049 ret = 0;
1050 } else if (old_state == IEEE80211_STA_AUTH &&
1051 new_state == IEEE80211_STA_NONE) {
1052 ret = 0;
1053 } else if (old_state == IEEE80211_STA_NONE &&
1054 new_state == IEEE80211_STA_NOTEXIST) {
1055 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1056 } else {
1057 ret = -EIO;
1058 }
1059 mutex_unlock(&mvm->mutex);
1060
1061 return ret;
1062}
1063
1064static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1065{
1066 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1067
1068 mvm->rts_threshold = value;
1069
1070 return 0;
1071}
1072
1073static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1074 struct ieee80211_vif *vif, u16 ac,
1075 const struct ieee80211_tx_queue_params *params)
1076{
1077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1079
1080 mvmvif->queue_params[ac] = *params;
1081
1082 /*
1083 * No need to update right away, we'll get BSS_CHANGED_QOS
1084 * The exception is P2P_DEVICE interface which needs immediate update.
1085 */
1086 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1087 int ret;
1088
1089 mutex_lock(&mvm->mutex);
1090 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1091 mutex_unlock(&mvm->mutex);
1092 return ret;
1093 }
1094 return 0;
1095}
1096
1097static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1098 struct ieee80211_vif *vif)
1099{
1100 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1101 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1102 200 + vif->bss_conf.beacon_int);
1103 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1104 100 + vif->bss_conf.beacon_int);
1105
1106 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1107 return;
1108
1109 mutex_lock(&mvm->mutex);
1110 /* Try really hard to protect the session and hear a beacon */
1111 iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1112 mutex_unlock(&mvm->mutex);
1113}
1114
1115static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1116 enum set_key_cmd cmd,
1117 struct ieee80211_vif *vif,
1118 struct ieee80211_sta *sta,
1119 struct ieee80211_key_conf *key)
1120{
1121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1122 int ret;
1123
1124 if (iwlwifi_mod_params.sw_crypto) {
1125 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1126 return -EOPNOTSUPP;
1127 }
1128
1129 switch (key->cipher) {
1130 case WLAN_CIPHER_SUITE_TKIP:
1131 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1132 /* fall-through */
1133 case WLAN_CIPHER_SUITE_CCMP:
1134 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1135 break;
1136 case WLAN_CIPHER_SUITE_AES_CMAC:
1137 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1138 break;
1139 case WLAN_CIPHER_SUITE_WEP40:
1140 case WLAN_CIPHER_SUITE_WEP104:
1141 /*
1142 * Support for TX only, at least for now, so accept
1143 * the key and do nothing else. Then mac80211 will
1144 * pass it for TX but we don't have to use it for RX.
1145 */
1146 return 0;
1147 default:
1148 return -EOPNOTSUPP;
1149 }
1150
1151 mutex_lock(&mvm->mutex);
1152
1153 switch (cmd) {
1154 case SET_KEY:
6caffd4f
JB		 1155 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1156 /* GTK on AP interface is a TX-only key, return 0 */
1157 ret = 0;
1158 key->hw_key_idx = STA_KEY_IDX_INVALID;
1159 break;
1160 }
1161
8ca151b5
JB		 1162 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1163 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1164 if (ret) {
1165 IWL_WARN(mvm, "set key failed\n");
1166 /*
1167 * can't add key for RX, but we don't need it
1168 * in the device for TX so still return 0
1169 */
6caffd4f 1170 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 1171 ret = 0;
1172 }
1173
1174 break;
1175 case DISABLE_KEY:
6caffd4f
JB		 1176 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1177 ret = 0;
1178 break;
1179 }
1180
8ca151b5
JB		 1181 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1182 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1183 break;
1184 default:
1185 ret = -EINVAL;
1186 }
1187
1188 mutex_unlock(&mvm->mutex);
1189 return ret;
1190}
1191
1192static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1193 struct ieee80211_vif *vif,
1194 struct ieee80211_key_conf *keyconf,
1195 struct ieee80211_sta *sta,
1196 u32 iv32, u16 *phase1key)
1197{
1198 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1199
1200 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1201}
1202
1203
1204static int iwl_mvm_roc(struct ieee80211_hw *hw,
1205 struct ieee80211_vif *vif,
1206 struct ieee80211_channel *channel,
d339d5ca
IP		 1207 int duration,
1208 enum ieee80211_roc_type type)
8ca151b5
JB		 1209{
1210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 1211 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 1212 struct cfg80211_chan_def chandef;
31d385ae
IP		 1213 struct iwl_mvm_phy_ctxt *phy_ctxt;
1214 int ret, i;
1215
1216 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1217 duration, type);
8ca151b5
JB		 1218
1219 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1220 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1221 return -EINVAL;
1222 }
1223
8ca151b5
JB		 1224 mutex_lock(&mvm->mutex);
1225
31d385ae
IP		 1226 for (i = 0; i < NUM_PHY_CTX; i++) {
1227 phy_ctxt = &mvm->phy_ctxts[i];
1228 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1229 continue;
1230
1231 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1232 /*
1233 * Unbind the P2P_DEVICE from the current PHY context,
1234 * and if the PHY context is not used remove it.
1235 */
1236 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1237 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1238 goto out_unlock;
1239
1240 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1241
1242 /* Bind the P2P_DEVICE to the current PHY Context */
1243 mvmvif->phy_ctxt = phy_ctxt;
1244
1245 ret = iwl_mvm_binding_add_vif(mvm, vif);
1246 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1247 goto out_unlock;
1248
1249 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1250 goto schedule_time_event;
1251 }
1252 }
1253
1254 /* Need to update the PHY context only if the ROC channel changed */
1255 if (channel == mvmvif->phy_ctxt->channel)
1256 goto schedule_time_event;
1257
8ca151b5 1258 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 1259
31d385ae
IP		 1260 /*
1261 * Change the PHY context configuration as it is currently referenced
1262 * only by the P2P Device MAC
1263 */
1264 if (mvmvif->phy_ctxt->ref == 1) {
1265 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1266 &chandef, 1, 1);
1267 if (ret)
1268 goto out_unlock;
1269 } else {
1270 /*
1271 * The PHY context is shared with other MACs. Need to remove the
1272 * P2P Device from the binding, allocate an new PHY context and
1273 * create a new binding
1274 */
1275 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1276 if (!phy_ctxt) {
1277 ret = -ENOSPC;
1278 goto out_unlock;
1279 }
1280
1281 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1282 1, 1);
1283 if (ret) {
1284 IWL_ERR(mvm, "Failed to change PHY context\n");
1285 goto out_unlock;
1286 }
1287
1288 /* Unbind the P2P_DEVICE from the current PHY context */
1289 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1290 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1291 goto out_unlock;
1292
1293 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1294
1295 /* Bind the P2P_DEVICE to the new allocated PHY context */
1296 mvmvif->phy_ctxt = phy_ctxt;
1297
1298 ret = iwl_mvm_binding_add_vif(mvm, vif);
1299 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1300 goto out_unlock;
1301
1302 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1303 }
1304
1305schedule_time_event:
8ca151b5 1306 /* Schedule the time events */
e635c797 1307 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 1308
31d385ae 1309out_unlock:
8ca151b5
JB		 1310 mutex_unlock(&mvm->mutex);
1311 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 1312 return ret;
1313}
1314
1315static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1316{
1317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1318
1319 IWL_DEBUG_MAC80211(mvm, "enter\n");
1320
1321 mutex_lock(&mvm->mutex);
1322 iwl_mvm_stop_p2p_roc(mvm);
1323 mutex_unlock(&mvm->mutex);
1324
1325 IWL_DEBUG_MAC80211(mvm, "leave\n");
1326 return 0;
1327}
1328
1329static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1330 struct ieee80211_chanctx_conf *ctx)
1331{
1332 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1333 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1334 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 1335 int ret;
1336
53a9d61e 1337 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 1338
8ca151b5 1339 mutex_lock(&mvm->mutex);
fe0f2de3
IP		 1340 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1341 if (!phy_ctxt) {
1342 ret = -ENOSPC;
1343 goto out;
1344 }
8ca151b5 1345
53a9d61e
IP		 1346 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1347 ctx->rx_chains_static,
1348 ctx->rx_chains_dynamic);
fe0f2de3
IP		 1349 if (ret) {
1350 IWL_ERR(mvm, "Failed to add PHY context\n");
1351 goto out;
1352 }
8ca151b5 1353
53a9d61e 1354 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 1355 *phy_ctxt_id = phy_ctxt->id;
1356out:
8ca151b5
JB		 1357 mutex_unlock(&mvm->mutex);
1358 return ret;
1359}
1360
1361static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1362 struct ieee80211_chanctx_conf *ctx)
1363{
1364 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1365 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1366 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 1367
1368 mutex_lock(&mvm->mutex);
fe0f2de3 1369 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
8ca151b5
JB		 1370 mutex_unlock(&mvm->mutex);
1371}
1372
1373static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1374 struct ieee80211_chanctx_conf *ctx,
1375 u32 changed)
1376{
1377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1378 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1379 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 1380
31d385ae
IP		 1381 if (WARN_ONCE((phy_ctxt->ref > 1) &&
1382 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1383 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1384 IEEE80211_CHANCTX_CHANGE_RADAR)),
1385 "Cannot change PHY. Ref=%d, changed=0x%X\n",
1386 phy_ctxt->ref, changed))
1387 return;
8ca151b5
JB		 1388
1389 mutex_lock(&mvm->mutex);
1390 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1391 ctx->rx_chains_static,
1392 ctx->rx_chains_dynamic);
1393 mutex_unlock(&mvm->mutex);
1394}
1395
1396static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1397 struct ieee80211_vif *vif,
1398 struct ieee80211_chanctx_conf *ctx)
1399{
1400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 1401 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1402 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 1403 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1404 int ret;
1405
1406 mutex_lock(&mvm->mutex);
1407
fe0f2de3 1408 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 1409
1410 switch (vif->type) {
1411 case NL80211_IFTYPE_AP:
1412 /*
1413 * The AP binding flow is handled as part of the start_ap flow
1414 * (in bss_info_changed).
1415 */
1416 ret = 0;
1417 goto out_unlock;
1418 case NL80211_IFTYPE_STATION:
1419 case NL80211_IFTYPE_ADHOC:
1420 case NL80211_IFTYPE_MONITOR:
1421 break;
1422 default:
1423 ret = -EINVAL;
1424 goto out_unlock;
1425 }
1426
1427 ret = iwl_mvm_binding_add_vif(mvm, vif);
1428 if (ret)
1429 goto out_unlock;
1430
1431 /*
1432 * Setting the quota at this stage is only required for monitor
1433 * interfaces. For the other types, the bss_info changed flow
1434 * will handle quota settings.
1435 */
1436 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 1437 mvmvif->monitor_active = true;
8ca151b5
JB		 1438 ret = iwl_mvm_update_quotas(mvm, vif);
1439 if (ret)
1440 goto out_remove_binding;
1441 }
1442
1443 goto out_unlock;
1444
1445 out_remove_binding:
1446 iwl_mvm_binding_remove_vif(mvm, vif);
1447 out_unlock:
1448 mutex_unlock(&mvm->mutex);
1449 if (ret)
1450 mvmvif->phy_ctxt = NULL;
1451 return ret;
1452}
1453
1454static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1455 struct ieee80211_vif *vif,
1456 struct ieee80211_chanctx_conf *ctx)
1457{
1458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1460
1461 mutex_lock(&mvm->mutex);
1462
1463 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1464
1465 if (vif->type == NL80211_IFTYPE_AP)
1466 goto out_unlock;
1467
8ca151b5
JB		 1468 switch (vif->type) {
1469 case NL80211_IFTYPE_MONITOR:
1e1391ca
IP		 1470 mvmvif->monitor_active = false;
1471 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1472 break;
1473 default:
1474 break;
1475 }
1476
1e1391ca 1477 iwl_mvm_binding_remove_vif(mvm, vif);
8ca151b5
JB		 1478out_unlock:
1479 mvmvif->phy_ctxt = NULL;
1480 mutex_unlock(&mvm->mutex);
1481}
1482
1483static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1484 struct ieee80211_sta *sta,
1485 bool set)
1486{
1487 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1488 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1489
1490 if (!mvm_sta || !mvm_sta->vif) {
1491 IWL_ERR(mvm, "Station is not associated to a vif\n");
1492 return -EINVAL;
1493 }
1494
1495 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1496}
1497
2b76ef13
EG		 1498static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1499 struct ieee80211_vif *vif,
1500 enum ieee80211_rssi_event rssi_event)
1501{
1502 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1503
1504 iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1505}
1506
8ca151b5
JB		 1507struct ieee80211_ops iwl_mvm_hw_ops = {
1508 .tx = iwl_mvm_mac_tx,
1509 .ampdu_action = iwl_mvm_mac_ampdu_action,
1510 .start = iwl_mvm_mac_start,
1511 .restart_complete = iwl_mvm_mac_restart_complete,
1512 .stop = iwl_mvm_mac_stop,
1513 .add_interface = iwl_mvm_mac_add_interface,
1514 .remove_interface = iwl_mvm_mac_remove_interface,
1515 .config = iwl_mvm_mac_config,
1516 .configure_filter = iwl_mvm_configure_filter,
1517 .bss_info_changed = iwl_mvm_bss_info_changed,
1518 .hw_scan = iwl_mvm_mac_hw_scan,
1519 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1520 .sta_state = iwl_mvm_mac_sta_state,
1521 .sta_notify = iwl_mvm_mac_sta_notify,
1522 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1523 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1524 .conf_tx = iwl_mvm_mac_conf_tx,
1525 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1526 .set_key = iwl_mvm_mac_set_key,
1527 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1528 .remain_on_channel = iwl_mvm_roc,
1529 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2b76ef13 1530 .rssi_callback = iwl_mvm_mac_rssi_callback,
8ca151b5
JB		 1531
1532 .add_chanctx = iwl_mvm_add_chanctx,
1533 .remove_chanctx = iwl_mvm_remove_chanctx,
1534 .change_chanctx = iwl_mvm_change_chanctx,
1535 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1536 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1537
1538 .start_ap = iwl_mvm_start_ap,
1539 .stop_ap = iwl_mvm_stop_ap,
1540
1541 .set_tim = iwl_mvm_set_tim,
1542
1543#ifdef CONFIG_PM_SLEEP
1544 /* look at d3.c */
1545 .suspend = iwl_mvm_suspend,
1546 .resume = iwl_mvm_resume,
1547 .set_wakeup = iwl_mvm_set_wakeup,
1548 .set_rekey_data = iwl_mvm_set_rekey_data,
1549#if IS_ENABLED(CONFIG_IPV6)
1550 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1551#endif
1552 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1553#endif
1554};
Linux kernel - Deliverables
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