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iwlwifi: mvm: sync statistics firmware API
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
75 #include <net/tcp.h>
76
77 #include "iwl-op-mode.h"
78 #include "iwl-io.h"
79 #include "mvm.h"
80 #include "sta.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88 #include "iwl-csr.h"
89
90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_STATION),
94 },
95 {
96 .max = 1,
97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
99 BIT(NL80211_IFTYPE_P2P_GO),
100 },
101 {
102 .max = 1,
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
104 },
105 };
106
107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 {
109 .num_different_channels = 2,
110 .max_interfaces = 3,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
113 },
114 };
115
116 #ifdef CONFIG_PM_SLEEP
117 static const struct nl80211_wowlan_tcp_data_token_feature
118 iwl_mvm_wowlan_tcp_token_feature = {
119 .min_len = 0,
120 .max_len = 255,
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
122 };
123
124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
135 .seq = true,
136 };
137 #endif
138
139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
140 /*
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
147 * be skipped.
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
150 */
151 enum {
152 BC_FILTER_MAGIC_NONE = 0,
153 BC_FILTER_MAGIC_IP,
154 BC_FILTER_MAGIC_MAC,
155 };
156
157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
158 {
159 /* arp */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
162 .attrs = {
163 {
164 /* frame type - arp, hw type - ethernet */
165 .offset_type =
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
170 },
171 {
172 /* arp dest ip */
173 .offset_type =
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
178 ETH_ALEN,
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 },
183 },
184 },
185 {
186 /* dhcp offer bcast */
187 .discard = 0,
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
189 .attrs = {
190 {
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
196 },
197 {
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .offset = 38,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
204 },
205 },
206 },
207 /* last filter must be empty */
208 {},
209 };
210 #endif
211
212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213 {
214 if (!iwl_mvm_is_d0i3_supported(mvm))
215 return;
216
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
221 iwl_trans_ref(mvm->trans);
222 }
223
224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225 {
226 if (!iwl_mvm_is_d0i3_supported(mvm))
227 return;
228
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
233 iwl_trans_unref(mvm->trans);
234 }
235
236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
238 {
239 int i, j;
240
241 if (!iwl_mvm_is_d0i3_supported(mvm))
242 return;
243
244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
247 continue;
248
249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 i, mvm->refs[i]);
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
253 mvm->refs[i] = 0;
254 }
255 spin_unlock_bh(&mvm->refs_lock);
256 }
257
258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
259 {
260 int i;
261 bool taken = false;
262
263 if (!iwl_mvm_is_d0i3_supported(mvm))
264 return true;
265
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
268 if (mvm->refs[i]) {
269 taken = true;
270 break;
271 }
272 }
273 spin_unlock_bh(&mvm->refs_lock);
274
275 return taken;
276 }
277
278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
279 {
280 iwl_mvm_ref(mvm, ref_type);
281
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
284 HZ)) {
285 WARN_ON_ONCE(1);
286 iwl_mvm_unref(mvm, ref_type);
287 return -EIO;
288 }
289
290 return 0;
291 }
292
293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
294 {
295 int i;
296
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
301 }
302 }
303
304 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
305 {
306 struct ieee80211_hw *hw = mvm->hw;
307 int num_mac, ret, i;
308
309 /* Tell mac80211 our characteristics */
310 hw->flags = IEEE80211_HW_SIGNAL_DBM |
311 IEEE80211_HW_SPECTRUM_MGMT |
312 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
313 IEEE80211_HW_QUEUE_CONTROL |
314 IEEE80211_HW_WANT_MONITOR_VIF |
315 IEEE80211_HW_SUPPORTS_PS |
316 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
317 IEEE80211_HW_AMPDU_AGGREGATION |
318 IEEE80211_HW_TIMING_BEACON_ONLY |
319 IEEE80211_HW_CONNECTION_MONITOR |
320 IEEE80211_HW_CHANCTX_STA_CSA |
321 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
322
323 hw->queues = mvm->first_agg_queue;
324 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
325 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
326 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
327 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
328 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
329 hw->rate_control_algorithm = "iwl-mvm-rs";
330
331 /*
332 * Enable 11w if advertised by firmware and software crypto
333 * is not enabled (as the firmware will interpret some mgmt
334 * packets, so enabling it with software crypto isn't safe)
335 */
336 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
337 !iwlwifi_mod_params.sw_crypto)
338 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
339
340 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
341 !iwlwifi_mod_params.uapsd_disable) {
342 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
343 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
344 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
345 }
346
347 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
348 mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
349 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
350 hw->wiphy->features |=
351 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
352 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
353 }
354
355 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
356 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
357 hw->chanctx_data_size = sizeof(u16);
358
359 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
360 BIT(NL80211_IFTYPE_P2P_CLIENT) |
361 BIT(NL80211_IFTYPE_AP) |
362 BIT(NL80211_IFTYPE_P2P_GO) |
363 BIT(NL80211_IFTYPE_P2P_DEVICE) |
364 BIT(NL80211_IFTYPE_ADHOC);
365
366 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
367 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
368 REGULATORY_DISABLE_BEACON_HINTS;
369
370 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
371 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
372
373 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
374
375 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
376 hw->wiphy->n_iface_combinations =
377 ARRAY_SIZE(iwl_mvm_iface_combinations);
378
379 hw->wiphy->max_remain_on_channel_duration = 10000;
380 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
381 /* we can compensate an offset of up to 3 channels = 15 MHz */
382 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
383
384 /* Extract MAC address */
385 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
386 hw->wiphy->addresses = mvm->addresses;
387 hw->wiphy->n_addresses = 1;
388
389 /* Extract additional MAC addresses if available */
390 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
391 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
392
393 for (i = 1; i < num_mac; i++) {
394 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
395 ETH_ALEN);
396 mvm->addresses[i].addr[5]++;
397 hw->wiphy->n_addresses++;
398 }
399
400 iwl_mvm_reset_phy_ctxts(mvm);
401
402 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
403
404 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
405
406 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
407 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
408 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
409 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
410 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
411 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
412
413 hw->wiphy->hw_version = mvm->trans->hw_id;
414
415 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
416 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
417 else
418 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
419
420 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
421 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
422 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
423 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
424 /* we create the 802.11 header and zero length SSID IE. */
425 hw->wiphy->max_sched_scan_ie_len =
426 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
427 }
428
429 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
430 NL80211_FEATURE_LOW_PRIORITY_SCAN |
431 NL80211_FEATURE_P2P_GO_OPPPS |
432 NL80211_FEATURE_DYNAMIC_SMPS |
433 NL80211_FEATURE_STATIC_SMPS |
434 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
435
436 if (mvm->fw->ucode_capa.capa[0] &
437 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
438 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
439 if (mvm->fw->ucode_capa.capa[0] &
440 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
441 hw->wiphy->features |= NL80211_FEATURE_QUIET;
442
443 if (mvm->fw->ucode_capa.capa[0] &
444 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
445 hw->wiphy->features |=
446 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
447
448 if (mvm->fw->ucode_capa.capa[0] &
449 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
450 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
451
452 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
453
454 /* currently FW API supports only one optional cipher scheme */
455 if (mvm->fw->cs[0].cipher) {
456 mvm->hw->n_cipher_schemes = 1;
457 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
458 }
459
460 #ifdef CONFIG_PM_SLEEP
461 if (iwl_mvm_is_d0i3_supported(mvm) &&
462 device_can_wakeup(mvm->trans->dev)) {
463 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
464 hw->wiphy->wowlan = &mvm->wowlan;
465 }
466
467 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
468 mvm->trans->ops->d3_suspend &&
469 mvm->trans->ops->d3_resume &&
470 device_can_wakeup(mvm->trans->dev)) {
471 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
472 WIPHY_WOWLAN_DISCONNECT |
473 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
474 WIPHY_WOWLAN_RFKILL_RELEASE |
475 WIPHY_WOWLAN_NET_DETECT;
476 if (!iwlwifi_mod_params.sw_crypto)
477 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
478 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
479 WIPHY_WOWLAN_4WAY_HANDSHAKE;
480
481 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
482 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
483 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
484 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
485 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
486 hw->wiphy->wowlan = &mvm->wowlan;
487 }
488 #endif
489
490 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
491 /* assign default bcast filtering configuration */
492 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
493 #endif
494
495 ret = iwl_mvm_leds_init(mvm);
496 if (ret)
497 return ret;
498
499 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
500 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
501 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
502 }
503
504 if (mvm->fw->ucode_capa.capa[0] &
505 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
506 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
507 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
508 }
509
510 ret = ieee80211_register_hw(mvm->hw);
511 if (ret)
512 iwl_mvm_leds_exit(mvm);
513
514 return ret;
515 }
516
517 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
518 struct ieee80211_sta *sta,
519 struct sk_buff *skb)
520 {
521 struct iwl_mvm_sta *mvmsta;
522 bool defer = false;
523
524 /*
525 * double check the IN_D0I3 flag both before and after
526 * taking the spinlock, in order to prevent taking
527 * the spinlock when not needed.
528 */
529 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
530 return false;
531
532 spin_lock(&mvm->d0i3_tx_lock);
533 /*
534 * testing the flag again ensures the skb dequeue
535 * loop (on d0i3 exit) hasn't run yet.
536 */
537 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
538 goto out;
539
540 mvmsta = iwl_mvm_sta_from_mac80211(sta);
541 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
542 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
543 goto out;
544
545 __skb_queue_tail(&mvm->d0i3_tx, skb);
546 ieee80211_stop_queues(mvm->hw);
547
548 /* trigger wakeup */
549 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
550 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
551
552 defer = true;
553 out:
554 spin_unlock(&mvm->d0i3_tx_lock);
555 return defer;
556 }
557
558 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
559 struct ieee80211_tx_control *control,
560 struct sk_buff *skb)
561 {
562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
563 struct ieee80211_sta *sta = control->sta;
564 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
565 struct ieee80211_hdr *hdr = (void *)skb->data;
566
567 if (iwl_mvm_is_radio_killed(mvm)) {
568 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
569 goto drop;
570 }
571
572 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
573 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
574 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
575 goto drop;
576
577 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
578 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
579 ieee80211_is_mgmt(hdr->frame_control) &&
580 !ieee80211_is_deauth(hdr->frame_control) &&
581 !ieee80211_is_disassoc(hdr->frame_control) &&
582 !ieee80211_is_action(hdr->frame_control)))
583 sta = NULL;
584
585 if (sta) {
586 if (iwl_mvm_defer_tx(mvm, sta, skb))
587 return;
588 if (iwl_mvm_tx_skb(mvm, skb, sta))
589 goto drop;
590 return;
591 }
592
593 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
594 goto drop;
595 return;
596 drop:
597 ieee80211_free_txskb(hw, skb);
598 }
599
600 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
601 {
602 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
603 return false;
604 return true;
605 }
606
607 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
608 {
609 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
610 return false;
611 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
612 return true;
613
614 /* enabled by default */
615 return true;
616 }
617
618 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif,
620 enum ieee80211_ampdu_mlme_action action,
621 struct ieee80211_sta *sta, u16 tid,
622 u16 *ssn, u8 buf_size)
623 {
624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
625 int ret;
626 bool tx_agg_ref = false;
627
628 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
629 sta->addr, tid, action);
630
631 if (!(mvm->nvm_data->sku_cap_11n_enable))
632 return -EACCES;
633
634 /* return from D0i3 before starting a new Tx aggregation */
635 switch (action) {
636 case IEEE80211_AMPDU_TX_START:
637 case IEEE80211_AMPDU_TX_STOP_CONT:
638 case IEEE80211_AMPDU_TX_STOP_FLUSH:
639 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
640 case IEEE80211_AMPDU_TX_OPERATIONAL:
641 /*
642 * for tx start, wait synchronously until D0i3 exit to
643 * get the correct sequence number for the tid.
644 * additionally, some other ampdu actions use direct
645 * target access, which is not handled automatically
646 * by the trans layer (unlike commands), so wait for
647 * d0i3 exit in these cases as well.
648 */
649 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
650 if (ret)
651 return ret;
652
653 tx_agg_ref = true;
654 break;
655 default:
656 break;
657 }
658
659 mutex_lock(&mvm->mutex);
660
661 switch (action) {
662 case IEEE80211_AMPDU_RX_START:
663 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
664 ret = -EINVAL;
665 break;
666 }
667 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
668 break;
669 case IEEE80211_AMPDU_RX_STOP:
670 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
671 break;
672 case IEEE80211_AMPDU_TX_START:
673 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
674 ret = -EINVAL;
675 break;
676 }
677 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
678 break;
679 case IEEE80211_AMPDU_TX_STOP_CONT:
680 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
681 break;
682 case IEEE80211_AMPDU_TX_STOP_FLUSH:
683 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
684 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
685 break;
686 case IEEE80211_AMPDU_TX_OPERATIONAL:
687 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
688 break;
689 default:
690 WARN_ON_ONCE(1);
691 ret = -EINVAL;
692 break;
693 }
694 mutex_unlock(&mvm->mutex);
695
696 /*
697 * If the tid is marked as started, we won't use it for offloaded
698 * traffic on the next D0i3 entry. It's safe to unref.
699 */
700 if (tx_agg_ref)
701 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
702
703 return ret;
704 }
705
706 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
707 struct ieee80211_vif *vif)
708 {
709 struct iwl_mvm *mvm = data;
710 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
711
712 mvmvif->uploaded = false;
713 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
714
715 /* does this make sense at all? */
716 mvmvif->color++;
717
718 spin_lock_bh(&mvm->time_event_lock);
719 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
720 spin_unlock_bh(&mvm->time_event_lock);
721
722 mvmvif->phy_ctxt = NULL;
723 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
724 }
725
726 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
727 const void *data, size_t datalen)
728 {
729 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
730 ssize_t bytes_read;
731 ssize_t bytes_read_trans;
732
733 if (offset < dump_ptrs->op_mode_len) {
734 bytes_read = min_t(ssize_t, count,
735 dump_ptrs->op_mode_len - offset);
736 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
737 bytes_read);
738 offset += bytes_read;
739 count -= bytes_read;
740
741 if (count == 0)
742 return bytes_read;
743 } else {
744 bytes_read = 0;
745 }
746
747 if (!dump_ptrs->trans_ptr)
748 return bytes_read;
749
750 offset -= dump_ptrs->op_mode_len;
751 bytes_read_trans = min_t(ssize_t, count,
752 dump_ptrs->trans_ptr->len - offset);
753 memcpy(buffer + bytes_read,
754 (u8 *)dump_ptrs->trans_ptr->data + offset,
755 bytes_read_trans);
756
757 return bytes_read + bytes_read_trans;
758 }
759
760 static void iwl_mvm_free_coredump(const void *data)
761 {
762 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
763
764 vfree(fw_error_dump->op_mode_ptr);
765 vfree(fw_error_dump->trans_ptr);
766 kfree(fw_error_dump);
767 }
768
769 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
770 struct iwl_fw_error_dump_data **dump_data)
771 {
772 struct iwl_fw_error_dump_fifo *fifo_hdr;
773 u32 *fifo_data;
774 u32 fifo_len;
775 unsigned long flags;
776 int i, j;
777
778 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
779 return;
780
781 /* Pull RXF data from all RXFs */
782 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
783 /*
784 * Keep aside the additional offset that might be needed for
785 * next RXF
786 */
787 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
788
789 fifo_hdr = (void *)(*dump_data)->data;
790 fifo_data = (void *)fifo_hdr->data;
791 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
792
793 /* No need to try to read the data if the length is 0 */
794 if (fifo_len == 0)
795 continue;
796
797 /* Add a TLV for the RXF */
798 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
799 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
800
801 fifo_hdr->fifo_num = cpu_to_le32(i);
802 fifo_hdr->available_bytes =
803 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
804 RXF_RD_D_SPACE +
805 offset_diff));
806 fifo_hdr->wr_ptr =
807 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
808 RXF_RD_WR_PTR +
809 offset_diff));
810 fifo_hdr->rd_ptr =
811 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
812 RXF_RD_RD_PTR +
813 offset_diff));
814 fifo_hdr->fence_ptr =
815 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
816 RXF_RD_FENCE_PTR +
817 offset_diff));
818 fifo_hdr->fence_mode =
819 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
820 RXF_SET_FENCE_MODE +
821 offset_diff));
822
823 /* Lock fence */
824 iwl_trans_write_prph(mvm->trans,
825 RXF_SET_FENCE_MODE + offset_diff, 0x1);
826 /* Set fence pointer to the same place like WR pointer */
827 iwl_trans_write_prph(mvm->trans,
828 RXF_LD_WR2FENCE + offset_diff, 0x1);
829 /* Set fence offset */
830 iwl_trans_write_prph(mvm->trans,
831 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
832 0x0);
833
834 /* Read FIFO */
835 fifo_len /= sizeof(u32); /* Size in DWORDS */
836 for (j = 0; j < fifo_len; j++)
837 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
838 RXF_FIFO_RD_FENCE_INC +
839 offset_diff);
840 *dump_data = iwl_fw_error_next_data(*dump_data);
841 }
842
843 /* Pull TXF data from all TXFs */
844 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
845 /* Mark the number of TXF we're pulling now */
846 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
847
848 fifo_hdr = (void *)(*dump_data)->data;
849 fifo_data = (void *)fifo_hdr->data;
850 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
851
852 /* No need to try to read the data if the length is 0 */
853 if (fifo_len == 0)
854 continue;
855
856 /* Add a TLV for the FIFO */
857 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
858 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
859
860 fifo_hdr->fifo_num = cpu_to_le32(i);
861 fifo_hdr->available_bytes =
862 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
863 TXF_FIFO_ITEM_CNT));
864 fifo_hdr->wr_ptr =
865 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
866 TXF_WR_PTR));
867 fifo_hdr->rd_ptr =
868 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
869 TXF_RD_PTR));
870 fifo_hdr->fence_ptr =
871 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
872 TXF_FENCE_PTR));
873 fifo_hdr->fence_mode =
874 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
875 TXF_LOCK_FENCE));
876
877 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
878 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
879 TXF_WR_PTR);
880
881 /* Dummy-read to advance the read pointer to the head */
882 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
883
884 /* Read FIFO */
885 fifo_len /= sizeof(u32); /* Size in DWORDS */
886 for (j = 0; j < fifo_len; j++)
887 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
888 TXF_READ_MODIFY_DATA);
889 *dump_data = iwl_fw_error_next_data(*dump_data);
890 }
891
892 iwl_trans_release_nic_access(mvm->trans, &flags);
893 }
894
895 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
896 {
897 struct iwl_fw_error_dump_file *dump_file;
898 struct iwl_fw_error_dump_data *dump_data;
899 struct iwl_fw_error_dump_info *dump_info;
900 struct iwl_fw_error_dump_mem *dump_mem;
901 struct iwl_mvm_dump_ptrs *fw_error_dump;
902 u32 sram_len, sram_ofs;
903 u32 file_len, fifo_data_len = 0;
904 u32 smem_len = mvm->cfg->smem_len;
905 u32 sram2_len = mvm->cfg->dccm2_len;
906
907 lockdep_assert_held(&mvm->mutex);
908
909 /* W/A for 8000 HW family A-step */
910 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
911 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) {
912 if (smem_len)
913 smem_len = 0x38000;
914
915 if (sram2_len)
916 sram2_len = 0x10000;
917 }
918
919 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
920 if (!fw_error_dump)
921 return;
922
923 /* SRAM - include stack CCM if driver knows the values for it */
924 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
925 const struct fw_img *img;
926
927 img = &mvm->fw->img[mvm->cur_ucode];
928 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
929 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
930 } else {
931 sram_ofs = mvm->cfg->dccm_offset;
932 sram_len = mvm->cfg->dccm_len;
933 }
934
935 /* reading RXF/TXF sizes */
936 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
937 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
938 int i;
939
940 fifo_data_len = 0;
941
942 /* Count RXF size */
943 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
944 if (!mem_cfg->rxfifo_size[i])
945 continue;
946
947 /* Add header info */
948 fifo_data_len += mem_cfg->rxfifo_size[i] +
949 sizeof(*dump_data) +
950 sizeof(struct iwl_fw_error_dump_fifo);
951 }
952
953 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
954 if (!mem_cfg->txfifo_size[i])
955 continue;
956
957 /* Add header info */
958 fifo_data_len += mem_cfg->txfifo_size[i] +
959 sizeof(*dump_data) +
960 sizeof(struct iwl_fw_error_dump_fifo);
961 }
962 }
963
964 file_len = sizeof(*dump_file) +
965 sizeof(*dump_data) * 2 +
966 sram_len + sizeof(*dump_mem) +
967 fifo_data_len +
968 sizeof(*dump_info);
969
970 /* Make room for the SMEM, if it exists */
971 if (smem_len)
972 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
973
974 /* Make room for the secondary SRAM, if it exists */
975 if (sram2_len)
976 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
977
978 dump_file = vzalloc(file_len);
979 if (!dump_file) {
980 kfree(fw_error_dump);
981 return;
982 }
983
984 fw_error_dump->op_mode_ptr = dump_file;
985
986 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
987 dump_data = (void *)dump_file->data;
988
989 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
990 dump_data->len = cpu_to_le32(sizeof(*dump_info));
991 dump_info = (void *) dump_data->data;
992 dump_info->device_family =
993 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
994 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
995 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
996 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
997 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
998 sizeof(dump_info->fw_human_readable));
999 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1000 sizeof(dump_info->dev_human_readable));
1001 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1002 sizeof(dump_info->bus_human_readable));
1003
1004 dump_data = iwl_fw_error_next_data(dump_data);
1005 /* We only dump the FIFOs if the FW is in error state */
1006 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1007 iwl_mvm_dump_fifos(mvm, &dump_data);
1008
1009 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1010 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1011 dump_mem = (void *)dump_data->data;
1012 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1013 dump_mem->offset = cpu_to_le32(sram_ofs);
1014 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1015 sram_len);
1016
1017 if (smem_len) {
1018 dump_data = iwl_fw_error_next_data(dump_data);
1019 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1020 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1021 dump_mem = (void *)dump_data->data;
1022 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1023 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1024 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1025 dump_mem->data, smem_len);
1026 }
1027
1028 if (sram2_len) {
1029 dump_data = iwl_fw_error_next_data(dump_data);
1030 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1031 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1032 dump_mem = (void *)dump_data->data;
1033 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1034 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1035 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1036 dump_mem->data, sram2_len);
1037 }
1038
1039 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1040 fw_error_dump->op_mode_len = file_len;
1041 if (fw_error_dump->trans_ptr)
1042 file_len += fw_error_dump->trans_ptr->len;
1043 dump_file->file_len = cpu_to_le32(file_len);
1044
1045 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1046 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1047 }
1048
1049 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1050 {
1051 /* clear the D3 reconfig, we only need it to avoid dumping a
1052 * firmware coredump on reconfiguration, we shouldn't do that
1053 * on D3->D0 transition
1054 */
1055 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
1056 iwl_mvm_fw_error_dump(mvm);
1057
1058 /* cleanup all stale references (scan, roc), but keep the
1059 * ucode_down ref until reconfig is complete
1060 */
1061 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1062
1063 iwl_trans_stop_device(mvm->trans);
1064
1065 mvm->scan_status = IWL_MVM_SCAN_NONE;
1066 mvm->ps_disabled = false;
1067 mvm->calibrating = false;
1068
1069 /* just in case one was running */
1070 ieee80211_remain_on_channel_expired(mvm->hw);
1071
1072 ieee80211_iterate_active_interfaces_atomic(
1073 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1074 iwl_mvm_cleanup_iterator, mvm);
1075
1076 mvm->p2p_device_vif = NULL;
1077 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1078
1079 iwl_mvm_reset_phy_ctxts(mvm);
1080 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1081 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1082 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1083 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1084 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1085 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1086 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1087 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1088 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1089
1090 ieee80211_wake_queues(mvm->hw);
1091
1092 /* clear any stale d0i3 state */
1093 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1094
1095 mvm->vif_count = 0;
1096 mvm->rx_ba_sessions = 0;
1097 }
1098
1099 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1100 {
1101 int ret;
1102
1103 lockdep_assert_held(&mvm->mutex);
1104
1105 /* Clean up some internal and mac80211 state on restart */
1106 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1107 iwl_mvm_restart_cleanup(mvm);
1108
1109 ret = iwl_mvm_up(mvm);
1110
1111 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1112 /* Something went wrong - we need to finish some cleanup
1113 * that normally iwl_mvm_mac_restart_complete() below
1114 * would do.
1115 */
1116 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1117 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1118 }
1119
1120 return ret;
1121 }
1122
1123 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1124 {
1125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1126 int ret;
1127
1128 /* Some hw restart cleanups must not hold the mutex */
1129 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1130 /*
1131 * Make sure we are out of d0i3. This is needed
1132 * to make sure the reference accounting is correct
1133 * (and there is no stale d0i3_exit_work).
1134 */
1135 wait_event_timeout(mvm->d0i3_exit_waitq,
1136 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1137 &mvm->status),
1138 HZ);
1139 }
1140
1141 mutex_lock(&mvm->mutex);
1142 ret = __iwl_mvm_mac_start(mvm);
1143 mutex_unlock(&mvm->mutex);
1144
1145 return ret;
1146 }
1147
1148 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1149 {
1150 int ret;
1151
1152 mutex_lock(&mvm->mutex);
1153
1154 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1155 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1156 ret = iwl_mvm_update_quotas(mvm, NULL);
1157 if (ret)
1158 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1159 ret);
1160
1161 /* allow transport/FW low power modes */
1162 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1163
1164 /*
1165 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1166 * of packets the FW sent out, so we must reconnect.
1167 */
1168 iwl_mvm_teardown_tdls_peers(mvm);
1169
1170 mutex_unlock(&mvm->mutex);
1171 }
1172
1173 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1174 {
1175 bool exit_now;
1176
1177 if (!iwl_mvm_is_d0i3_supported(mvm))
1178 return;
1179
1180 mutex_lock(&mvm->d0i3_suspend_mutex);
1181 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1182 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1183 &mvm->d0i3_suspend_flags);
1184 mutex_unlock(&mvm->d0i3_suspend_mutex);
1185
1186 if (exit_now) {
1187 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1188 _iwl_mvm_exit_d0i3(mvm);
1189 }
1190
1191 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1192 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1193 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1194 &mvm->status),
1195 HZ))
1196 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1197 }
1198
1199 static void
1200 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1201 enum ieee80211_reconfig_type reconfig_type)
1202 {
1203 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1204
1205 switch (reconfig_type) {
1206 case IEEE80211_RECONFIG_TYPE_RESTART:
1207 iwl_mvm_restart_complete(mvm);
1208 break;
1209 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1210 iwl_mvm_resume_complete(mvm);
1211 break;
1212 }
1213 }
1214
1215 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1216 {
1217 lockdep_assert_held(&mvm->mutex);
1218
1219 /* disallow low power states when the FW is down */
1220 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1221
1222 /* async_handlers_wk is now blocked */
1223
1224 /*
1225 * The work item could be running or queued if the
1226 * ROC time event stops just as we get here.
1227 */
1228 cancel_work_sync(&mvm->roc_done_wk);
1229
1230 iwl_trans_stop_device(mvm->trans);
1231
1232 iwl_mvm_async_handlers_purge(mvm);
1233 /* async_handlers_list is empty and will stay empty: HW is stopped */
1234
1235 /* the fw is stopped, the aux sta is dead: clean up driver state */
1236 iwl_mvm_del_aux_sta(mvm);
1237
1238 mvm->ucode_loaded = false;
1239 }
1240
1241 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1242 {
1243 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1244
1245 flush_work(&mvm->d0i3_exit_work);
1246 flush_work(&mvm->async_handlers_wk);
1247 flush_work(&mvm->fw_error_dump_wk);
1248
1249 mutex_lock(&mvm->mutex);
1250 __iwl_mvm_mac_stop(mvm);
1251 mutex_unlock(&mvm->mutex);
1252
1253 /*
1254 * The worker might have been waiting for the mutex, let it run and
1255 * discover that its list is now empty.
1256 */
1257 cancel_work_sync(&mvm->async_handlers_wk);
1258 }
1259
1260 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1261 {
1262 u16 i;
1263
1264 lockdep_assert_held(&mvm->mutex);
1265
1266 for (i = 0; i < NUM_PHY_CTX; i++)
1267 if (!mvm->phy_ctxts[i].ref)
1268 return &mvm->phy_ctxts[i];
1269
1270 IWL_ERR(mvm, "No available PHY context\n");
1271 return NULL;
1272 }
1273
1274 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1275 s8 tx_power)
1276 {
1277 /* FW is in charge of regulatory enforcement */
1278 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1279 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1280 .pwr_restriction = cpu_to_le16(tx_power),
1281 };
1282
1283 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1284 sizeof(reduce_txpwr_cmd),
1285 &reduce_txpwr_cmd);
1286 }
1287
1288 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1289 struct ieee80211_vif *vif)
1290 {
1291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1292 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1293 int ret;
1294
1295 /*
1296 * make sure D0i3 exit is completed, otherwise a target access
1297 * during tx queue configuration could be done when still in
1298 * D0i3 state.
1299 */
1300 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1301 if (ret)
1302 return ret;
1303
1304 /*
1305 * Not much to do here. The stack will not allow interface
1306 * types or combinations that we didn't advertise, so we
1307 * don't really have to check the types.
1308 */
1309
1310 mutex_lock(&mvm->mutex);
1311
1312 /* Allocate resources for the MAC context, and add it to the fw */
1313 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1314 if (ret)
1315 goto out_unlock;
1316
1317 /* Counting number of interfaces is needed for legacy PM */
1318 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1319 mvm->vif_count++;
1320
1321 /*
1322 * The AP binding flow can be done only after the beacon
1323 * template is configured (which happens only in the mac80211
1324 * start_ap() flow), and adding the broadcast station can happen
1325 * only after the binding.
1326 * In addition, since modifying the MAC before adding a bcast
1327 * station is not allowed by the FW, delay the adding of MAC context to
1328 * the point where we can also add the bcast station.
1329 * In short: there's not much we can do at this point, other than
1330 * allocating resources :)
1331 */
1332 if (vif->type == NL80211_IFTYPE_AP ||
1333 vif->type == NL80211_IFTYPE_ADHOC) {
1334 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1335 if (ret) {
1336 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1337 goto out_release;
1338 }
1339
1340 iwl_mvm_vif_dbgfs_register(mvm, vif);
1341 goto out_unlock;
1342 }
1343
1344 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1345 if (ret)
1346 goto out_release;
1347
1348 ret = iwl_mvm_power_update_mac(mvm);
1349 if (ret)
1350 goto out_release;
1351
1352 /* beacon filtering */
1353 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1354 if (ret)
1355 goto out_remove_mac;
1356
1357 if (!mvm->bf_allowed_vif &&
1358 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1359 mvm->bf_allowed_vif = mvmvif;
1360 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1361 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1362 }
1363
1364 /*
1365 * P2P_DEVICE interface does not have a channel context assigned to it,
1366 * so a dedicated PHY context is allocated to it and the corresponding
1367 * MAC context is bound to it at this stage.
1368 */
1369 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1370
1371 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1372 if (!mvmvif->phy_ctxt) {
1373 ret = -ENOSPC;
1374 goto out_free_bf;
1375 }
1376
1377 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1378 ret = iwl_mvm_binding_add_vif(mvm, vif);
1379 if (ret)
1380 goto out_unref_phy;
1381
1382 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1383 if (ret)
1384 goto out_unbind;
1385
1386 /* Save a pointer to p2p device vif, so it can later be used to
1387 * update the p2p device MAC when a GO is started/stopped */
1388 mvm->p2p_device_vif = vif;
1389 }
1390
1391 iwl_mvm_vif_dbgfs_register(mvm, vif);
1392 goto out_unlock;
1393
1394 out_unbind:
1395 iwl_mvm_binding_remove_vif(mvm, vif);
1396 out_unref_phy:
1397 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1398 out_free_bf:
1399 if (mvm->bf_allowed_vif == mvmvif) {
1400 mvm->bf_allowed_vif = NULL;
1401 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1402 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1403 }
1404 out_remove_mac:
1405 mvmvif->phy_ctxt = NULL;
1406 iwl_mvm_mac_ctxt_remove(mvm, vif);
1407 out_release:
1408 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1409 mvm->vif_count--;
1410
1411 iwl_mvm_mac_ctxt_release(mvm, vif);
1412 out_unlock:
1413 mutex_unlock(&mvm->mutex);
1414
1415 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1416
1417 return ret;
1418 }
1419
1420 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1421 struct ieee80211_vif *vif)
1422 {
1423 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1424
1425 if (tfd_msk) {
1426 mutex_lock(&mvm->mutex);
1427 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1428 mutex_unlock(&mvm->mutex);
1429 }
1430
1431 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1432 /*
1433 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1434 * We assume here that all the packets sent to the OFFCHANNEL
1435 * queue are sent in ROC session.
1436 */
1437 flush_work(&mvm->roc_done_wk);
1438 } else {
1439 /*
1440 * By now, all the AC queues are empty. The AGG queues are
1441 * empty too. We already got all the Tx responses for all the
1442 * packets in the queues. The drain work can have been
1443 * triggered. Flush it.
1444 */
1445 flush_work(&mvm->sta_drained_wk);
1446 }
1447 }
1448
1449 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1450 struct ieee80211_vif *vif)
1451 {
1452 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1453 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1454
1455 iwl_mvm_prepare_mac_removal(mvm, vif);
1456
1457 mutex_lock(&mvm->mutex);
1458
1459 if (mvm->bf_allowed_vif == mvmvif) {
1460 mvm->bf_allowed_vif = NULL;
1461 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1462 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1463 }
1464
1465 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1466
1467 /*
1468 * For AP/GO interface, the tear down of the resources allocated to the
1469 * interface is be handled as part of the stop_ap flow.
1470 */
1471 if (vif->type == NL80211_IFTYPE_AP ||
1472 vif->type == NL80211_IFTYPE_ADHOC) {
1473 #ifdef CONFIG_NL80211_TESTMODE
1474 if (vif == mvm->noa_vif) {
1475 mvm->noa_vif = NULL;
1476 mvm->noa_duration = 0;
1477 }
1478 #endif
1479 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1480 goto out_release;
1481 }
1482
1483 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1484 mvm->p2p_device_vif = NULL;
1485 iwl_mvm_rm_bcast_sta(mvm, vif);
1486 iwl_mvm_binding_remove_vif(mvm, vif);
1487 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1488 mvmvif->phy_ctxt = NULL;
1489 }
1490
1491 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1492 mvm->vif_count--;
1493
1494 iwl_mvm_power_update_mac(mvm);
1495 iwl_mvm_mac_ctxt_remove(mvm, vif);
1496
1497 out_release:
1498 iwl_mvm_mac_ctxt_release(mvm, vif);
1499 mutex_unlock(&mvm->mutex);
1500 }
1501
1502 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1503 {
1504 return 0;
1505 }
1506
1507 struct iwl_mvm_mc_iter_data {
1508 struct iwl_mvm *mvm;
1509 int port_id;
1510 };
1511
1512 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1513 struct ieee80211_vif *vif)
1514 {
1515 struct iwl_mvm_mc_iter_data *data = _data;
1516 struct iwl_mvm *mvm = data->mvm;
1517 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1518 int ret, len;
1519
1520 /* if we don't have free ports, mcast frames will be dropped */
1521 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1522 return;
1523
1524 if (vif->type != NL80211_IFTYPE_STATION ||
1525 !vif->bss_conf.assoc)
1526 return;
1527
1528 cmd->port_id = data->port_id++;
1529 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1530 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1531
1532 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1533 if (ret)
1534 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1535 }
1536
1537 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1538 {
1539 struct iwl_mvm_mc_iter_data iter_data = {
1540 .mvm = mvm,
1541 };
1542
1543 lockdep_assert_held(&mvm->mutex);
1544
1545 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1546 return;
1547
1548 ieee80211_iterate_active_interfaces_atomic(
1549 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1550 iwl_mvm_mc_iface_iterator, &iter_data);
1551 }
1552
1553 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1554 struct netdev_hw_addr_list *mc_list)
1555 {
1556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1557 struct iwl_mcast_filter_cmd *cmd;
1558 struct netdev_hw_addr *addr;
1559 int addr_count;
1560 bool pass_all;
1561 int len;
1562
1563 addr_count = netdev_hw_addr_list_count(mc_list);
1564 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1565 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1566 if (pass_all)
1567 addr_count = 0;
1568
1569 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1570 cmd = kzalloc(len, GFP_ATOMIC);
1571 if (!cmd)
1572 return 0;
1573
1574 if (pass_all) {
1575 cmd->pass_all = 1;
1576 return (u64)(unsigned long)cmd;
1577 }
1578
1579 netdev_hw_addr_list_for_each(addr, mc_list) {
1580 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1581 cmd->count, addr->addr);
1582 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1583 addr->addr, ETH_ALEN);
1584 cmd->count++;
1585 }
1586
1587 return (u64)(unsigned long)cmd;
1588 }
1589
1590 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1591 unsigned int changed_flags,
1592 unsigned int *total_flags,
1593 u64 multicast)
1594 {
1595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1596 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1597
1598 mutex_lock(&mvm->mutex);
1599
1600 /* replace previous configuration */
1601 kfree(mvm->mcast_filter_cmd);
1602 mvm->mcast_filter_cmd = cmd;
1603
1604 if (!cmd)
1605 goto out;
1606
1607 iwl_mvm_recalc_multicast(mvm);
1608 out:
1609 mutex_unlock(&mvm->mutex);
1610 *total_flags = 0;
1611 }
1612
1613 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1614 struct iwl_bcast_iter_data {
1615 struct iwl_mvm *mvm;
1616 struct iwl_bcast_filter_cmd *cmd;
1617 u8 current_filter;
1618 };
1619
1620 static void
1621 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1622 const struct iwl_fw_bcast_filter *in_filter,
1623 struct iwl_fw_bcast_filter *out_filter)
1624 {
1625 struct iwl_fw_bcast_filter_attr *attr;
1626 int i;
1627
1628 memcpy(out_filter, in_filter, sizeof(*out_filter));
1629
1630 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1631 attr = &out_filter->attrs[i];
1632
1633 if (!attr->mask)
1634 break;
1635
1636 switch (attr->reserved1) {
1637 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1638 if (vif->bss_conf.arp_addr_cnt != 1) {
1639 attr->mask = 0;
1640 continue;
1641 }
1642
1643 attr->val = vif->bss_conf.arp_addr_list[0];
1644 break;
1645 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1646 attr->val = *(__be32 *)&vif->addr[2];
1647 break;
1648 default:
1649 break;
1650 }
1651 attr->reserved1 = 0;
1652 out_filter->num_attrs++;
1653 }
1654 }
1655
1656 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1657 struct ieee80211_vif *vif)
1658 {
1659 struct iwl_bcast_iter_data *data = _data;
1660 struct iwl_mvm *mvm = data->mvm;
1661 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1663 struct iwl_fw_bcast_mac *bcast_mac;
1664 int i;
1665
1666 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1667 return;
1668
1669 bcast_mac = &cmd->macs[mvmvif->id];
1670
1671 /*
1672 * enable filtering only for associated stations, but not for P2P
1673 * Clients
1674 */
1675 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1676 !vif->bss_conf.assoc)
1677 return;
1678
1679 bcast_mac->default_discard = 1;
1680
1681 /* copy all configured filters */
1682 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1683 /*
1684 * Make sure we don't exceed our filters limit.
1685 * if there is still a valid filter to be configured,
1686 * be on the safe side and just allow bcast for this mac.
1687 */
1688 if (WARN_ON_ONCE(data->current_filter >=
1689 ARRAY_SIZE(cmd->filters))) {
1690 bcast_mac->default_discard = 0;
1691 bcast_mac->attached_filters = 0;
1692 break;
1693 }
1694
1695 iwl_mvm_set_bcast_filter(vif,
1696 &mvm->bcast_filters[i],
1697 &cmd->filters[data->current_filter]);
1698
1699 /* skip current filter if it contains no attributes */
1700 if (!cmd->filters[data->current_filter].num_attrs)
1701 continue;
1702
1703 /* attach the filter to current mac */
1704 bcast_mac->attached_filters |=
1705 cpu_to_le16(BIT(data->current_filter));
1706
1707 data->current_filter++;
1708 }
1709 }
1710
1711 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1712 struct iwl_bcast_filter_cmd *cmd)
1713 {
1714 struct iwl_bcast_iter_data iter_data = {
1715 .mvm = mvm,
1716 .cmd = cmd,
1717 };
1718
1719 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1720 return false;
1721
1722 memset(cmd, 0, sizeof(*cmd));
1723 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1724 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1725
1726 #ifdef CONFIG_IWLWIFI_DEBUGFS
1727 /* use debugfs filters/macs if override is configured */
1728 if (mvm->dbgfs_bcast_filtering.override) {
1729 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1730 sizeof(cmd->filters));
1731 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1732 sizeof(cmd->macs));
1733 return true;
1734 }
1735 #endif
1736
1737 /* if no filters are configured, do nothing */
1738 if (!mvm->bcast_filters)
1739 return false;
1740
1741 /* configure and attach these filters for each associated sta vif */
1742 ieee80211_iterate_active_interfaces(
1743 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1744 iwl_mvm_bcast_filter_iterator, &iter_data);
1745
1746 return true;
1747 }
1748 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1749 struct ieee80211_vif *vif)
1750 {
1751 struct iwl_bcast_filter_cmd cmd;
1752
1753 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1754 return 0;
1755
1756 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1757 return 0;
1758
1759 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1760 sizeof(cmd), &cmd);
1761 }
1762 #else
1763 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1764 struct ieee80211_vif *vif)
1765 {
1766 return 0;
1767 }
1768 #endif
1769
1770 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1771 struct ieee80211_vif *vif,
1772 struct ieee80211_bss_conf *bss_conf,
1773 u32 changes)
1774 {
1775 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1776 int ret;
1777
1778 /*
1779 * Re-calculate the tsf id, as the master-slave relations depend on the
1780 * beacon interval, which was not known when the station interface was
1781 * added.
1782 */
1783 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1784 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1785
1786 /*
1787 * If we're not associated yet, take the (new) BSSID before associating
1788 * so the firmware knows. If we're already associated, then use the old
1789 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1790 * branch for disassociation below.
1791 */
1792 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1793 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1794
1795 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1796 if (ret)
1797 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1798
1799 /* after sending it once, adopt mac80211 data */
1800 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1801 mvmvif->associated = bss_conf->assoc;
1802
1803 if (changes & BSS_CHANGED_ASSOC) {
1804 if (bss_conf->assoc) {
1805 /* add quota for this interface */
1806 ret = iwl_mvm_update_quotas(mvm, NULL);
1807 if (ret) {
1808 IWL_ERR(mvm, "failed to update quotas\n");
1809 return;
1810 }
1811
1812 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1813 &mvm->status)) {
1814 /*
1815 * If we're restarting then the firmware will
1816 * obviously have lost synchronisation with
1817 * the AP. It will attempt to synchronise by
1818 * itself, but we can make it more reliable by
1819 * scheduling a session protection time event.
1820 *
1821 * The firmware needs to receive a beacon to
1822 * catch up with synchronisation, use 110% of
1823 * the beacon interval.
1824 *
1825 * Set a large maximum delay to allow for more
1826 * than a single interface.
1827 */
1828 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1829 iwl_mvm_protect_session(mvm, vif, dur, dur,
1830 5 * dur, false);
1831 }
1832
1833 iwl_mvm_sf_update(mvm, vif, false);
1834 iwl_mvm_power_vif_assoc(mvm, vif);
1835 if (vif->p2p) {
1836 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1837 iwl_mvm_update_smps(mvm, vif,
1838 IWL_MVM_SMPS_REQ_PROT,
1839 IEEE80211_SMPS_DYNAMIC);
1840 }
1841 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1842 /*
1843 * If update fails - SF might be running in associated
1844 * mode while disassociated - which is forbidden.
1845 */
1846 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1847 "Failed to update SF upon disassociation\n");
1848
1849 /* remove AP station now that the MAC is unassoc */
1850 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1851 if (ret)
1852 IWL_ERR(mvm, "failed to remove AP station\n");
1853
1854 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1855 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1856 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1857 /* remove quota for this interface */
1858 ret = iwl_mvm_update_quotas(mvm, NULL);
1859 if (ret)
1860 IWL_ERR(mvm, "failed to update quotas\n");
1861
1862 if (vif->p2p)
1863 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1864
1865 /* this will take the cleared BSSID from bss_conf */
1866 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1867 if (ret)
1868 IWL_ERR(mvm,
1869 "failed to update MAC %pM (clear after unassoc)\n",
1870 vif->addr);
1871 }
1872
1873 iwl_mvm_recalc_multicast(mvm);
1874 iwl_mvm_configure_bcast_filter(mvm, vif);
1875
1876 /* reset rssi values */
1877 mvmvif->bf_data.ave_beacon_signal = 0;
1878
1879 iwl_mvm_bt_coex_vif_change(mvm);
1880 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1881 IEEE80211_SMPS_AUTOMATIC);
1882 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1883 /*
1884 * We received a beacon _after_ association so
1885 * remove the session protection.
1886 */
1887 iwl_mvm_remove_time_event(mvm, mvmvif,
1888 &mvmvif->time_event_data);
1889 }
1890
1891 if (changes & BSS_CHANGED_BEACON_INFO) {
1892 iwl_mvm_sf_update(mvm, vif, false);
1893 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1894 }
1895
1896 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1897 ret = iwl_mvm_power_update_mac(mvm);
1898 if (ret)
1899 IWL_ERR(mvm, "failed to update power mode\n");
1900 }
1901
1902 if (changes & BSS_CHANGED_TXPOWER) {
1903 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1904 bss_conf->txpower);
1905 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1906 }
1907
1908 if (changes & BSS_CHANGED_CQM) {
1909 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1910 /* reset cqm events tracking */
1911 mvmvif->bf_data.last_cqm_event = 0;
1912 if (mvmvif->bf_data.bf_enabled) {
1913 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1914 if (ret)
1915 IWL_ERR(mvm,
1916 "failed to update CQM thresholds\n");
1917 }
1918 }
1919
1920 if (changes & BSS_CHANGED_ARP_FILTER) {
1921 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1922 iwl_mvm_configure_bcast_filter(mvm, vif);
1923 }
1924 }
1925
1926 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1927 struct ieee80211_vif *vif)
1928 {
1929 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1930 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1931 int ret;
1932
1933 /*
1934 * iwl_mvm_mac_ctxt_add() might read directly from the device
1935 * (the system time), so make sure it is available.
1936 */
1937 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1938 if (ret)
1939 return ret;
1940
1941 mutex_lock(&mvm->mutex);
1942
1943 /* Send the beacon template */
1944 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1945 if (ret)
1946 goto out_unlock;
1947
1948 /*
1949 * Re-calculate the tsf id, as the master-slave relations depend on the
1950 * beacon interval, which was not known when the AP interface was added.
1951 */
1952 if (vif->type == NL80211_IFTYPE_AP)
1953 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1954
1955 /* Add the mac context */
1956 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1957 if (ret)
1958 goto out_unlock;
1959
1960 /* Perform the binding */
1961 ret = iwl_mvm_binding_add_vif(mvm, vif);
1962 if (ret)
1963 goto out_remove;
1964
1965 /* Send the bcast station. At this stage the TBTT and DTIM time events
1966 * are added and applied to the scheduler */
1967 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1968 if (ret)
1969 goto out_unbind;
1970
1971 /* must be set before quota calculations */
1972 mvmvif->ap_ibss_active = true;
1973
1974 /* power updated needs to be done before quotas */
1975 iwl_mvm_power_update_mac(mvm);
1976
1977 ret = iwl_mvm_update_quotas(mvm, NULL);
1978 if (ret)
1979 goto out_quota_failed;
1980
1981 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1982 if (vif->p2p && mvm->p2p_device_vif)
1983 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1984
1985 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1986
1987 iwl_mvm_bt_coex_vif_change(mvm);
1988
1989 /* we don't support TDLS during DCM */
1990 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1991 iwl_mvm_teardown_tdls_peers(mvm);
1992
1993 mutex_unlock(&mvm->mutex);
1994 return 0;
1995
1996 out_quota_failed:
1997 iwl_mvm_power_update_mac(mvm);
1998 mvmvif->ap_ibss_active = false;
1999 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2000 out_unbind:
2001 iwl_mvm_binding_remove_vif(mvm, vif);
2002 out_remove:
2003 iwl_mvm_mac_ctxt_remove(mvm, vif);
2004 out_unlock:
2005 mutex_unlock(&mvm->mutex);
2006 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2007 return ret;
2008 }
2009
2010 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2011 struct ieee80211_vif *vif)
2012 {
2013 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2014 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2015
2016 iwl_mvm_prepare_mac_removal(mvm, vif);
2017
2018 mutex_lock(&mvm->mutex);
2019
2020 /* Handle AP stop while in CSA */
2021 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2022 iwl_mvm_remove_time_event(mvm, mvmvif,
2023 &mvmvif->time_event_data);
2024 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2025 }
2026
2027 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2028 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2029 mvm->csa_tx_block_bcn_timeout = 0;
2030 }
2031
2032 mvmvif->ap_ibss_active = false;
2033 mvm->ap_last_beacon_gp2 = 0;
2034
2035 iwl_mvm_bt_coex_vif_change(mvm);
2036
2037 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2038
2039 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2040 if (vif->p2p && mvm->p2p_device_vif)
2041 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2042
2043 iwl_mvm_update_quotas(mvm, NULL);
2044 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2045 iwl_mvm_binding_remove_vif(mvm, vif);
2046
2047 iwl_mvm_power_update_mac(mvm);
2048
2049 iwl_mvm_mac_ctxt_remove(mvm, vif);
2050
2051 mutex_unlock(&mvm->mutex);
2052 }
2053
2054 static void
2055 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2056 struct ieee80211_vif *vif,
2057 struct ieee80211_bss_conf *bss_conf,
2058 u32 changes)
2059 {
2060 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2061
2062 /* Changes will be applied when the AP/IBSS is started */
2063 if (!mvmvif->ap_ibss_active)
2064 return;
2065
2066 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2067 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2068 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2069 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2070
2071 /* Need to send a new beacon template to the FW */
2072 if (changes & BSS_CHANGED_BEACON &&
2073 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2074 IWL_WARN(mvm, "Failed updating beacon data\n");
2075
2076 if (changes & BSS_CHANGED_TXPOWER) {
2077 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2078 bss_conf->txpower);
2079 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2080 }
2081
2082 }
2083
2084 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2085 struct ieee80211_vif *vif,
2086 struct ieee80211_bss_conf *bss_conf,
2087 u32 changes)
2088 {
2089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090
2091 /*
2092 * iwl_mvm_bss_info_changed_station() might call
2093 * iwl_mvm_protect_session(), which reads directly from
2094 * the device (the system time), so make sure it is available.
2095 */
2096 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2097 return;
2098
2099 mutex_lock(&mvm->mutex);
2100
2101 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2102 iwl_mvm_scan_offload_stop(mvm, true);
2103
2104 switch (vif->type) {
2105 case NL80211_IFTYPE_STATION:
2106 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2107 break;
2108 case NL80211_IFTYPE_AP:
2109 case NL80211_IFTYPE_ADHOC:
2110 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2111 break;
2112 default:
2113 /* shouldn't happen */
2114 WARN_ON_ONCE(1);
2115 }
2116
2117 mutex_unlock(&mvm->mutex);
2118 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2119 }
2120
2121 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2122 enum iwl_scan_status scan_type)
2123 {
2124 int ret;
2125 bool wait_for_handlers = false;
2126
2127 mutex_lock(&mvm->mutex);
2128
2129 if (mvm->scan_status != scan_type) {
2130 ret = 0;
2131 /* make sure there are no pending notifications */
2132 wait_for_handlers = true;
2133 goto out;
2134 }
2135
2136 switch (scan_type) {
2137 case IWL_MVM_SCAN_SCHED:
2138 ret = iwl_mvm_scan_offload_stop(mvm, true);
2139 break;
2140 case IWL_MVM_SCAN_OS:
2141 ret = iwl_mvm_cancel_scan(mvm);
2142 break;
2143 case IWL_MVM_SCAN_NONE:
2144 default:
2145 WARN_ON_ONCE(1);
2146 ret = -EINVAL;
2147 break;
2148 }
2149 if (ret)
2150 goto out;
2151
2152 wait_for_handlers = true;
2153 out:
2154 mutex_unlock(&mvm->mutex);
2155
2156 /* make sure we consume the completion notification */
2157 if (wait_for_handlers)
2158 iwl_mvm_wait_for_async_handlers(mvm);
2159
2160 return ret;
2161 }
2162 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2163 struct ieee80211_vif *vif,
2164 struct ieee80211_scan_request *hw_req)
2165 {
2166 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2167 struct cfg80211_scan_request *req = &hw_req->req;
2168 int ret;
2169
2170 if (req->n_channels == 0 ||
2171 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2172 return -EINVAL;
2173
2174 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2175 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2176 if (ret)
2177 return ret;
2178 }
2179
2180 mutex_lock(&mvm->mutex);
2181
2182 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2183 ret = -EBUSY;
2184 goto out;
2185 }
2186
2187 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2188
2189 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2190 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2191 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2192 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2193 else
2194 ret = iwl_mvm_scan_request(mvm, vif, req);
2195
2196 if (ret)
2197 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2198 out:
2199 mutex_unlock(&mvm->mutex);
2200 return ret;
2201 }
2202
2203 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif)
2205 {
2206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207
2208 mutex_lock(&mvm->mutex);
2209
2210 iwl_mvm_cancel_scan(mvm);
2211
2212 mutex_unlock(&mvm->mutex);
2213 }
2214
2215 static void
2216 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2217 struct ieee80211_sta *sta, u16 tids,
2218 int num_frames,
2219 enum ieee80211_frame_release_type reason,
2220 bool more_data)
2221 {
2222 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2223
2224 /* Called when we need to transmit (a) frame(s) from mac80211 */
2225
2226 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2227 tids, more_data, false);
2228 }
2229
2230 static void
2231 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2232 struct ieee80211_sta *sta, u16 tids,
2233 int num_frames,
2234 enum ieee80211_frame_release_type reason,
2235 bool more_data)
2236 {
2237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2238
2239 /* Called when we need to transmit (a) frame(s) from agg queue */
2240
2241 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2242 tids, more_data, true);
2243 }
2244
2245 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2246 struct ieee80211_vif *vif,
2247 enum sta_notify_cmd cmd,
2248 struct ieee80211_sta *sta)
2249 {
2250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2251 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2252 int tid;
2253
2254 switch (cmd) {
2255 case STA_NOTIFY_SLEEP:
2256 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2257 ieee80211_sta_block_awake(hw, sta, true);
2258 spin_lock_bh(&mvmsta->lock);
2259 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2260 struct iwl_mvm_tid_data *tid_data;
2261
2262 tid_data = &mvmsta->tid_data[tid];
2263 if (tid_data->state != IWL_AGG_ON &&
2264 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2265 continue;
2266 if (iwl_mvm_tid_queued(tid_data) == 0)
2267 continue;
2268 ieee80211_sta_set_buffered(sta, tid, true);
2269 }
2270 spin_unlock_bh(&mvmsta->lock);
2271 /*
2272 * The fw updates the STA to be asleep. Tx packets on the Tx
2273 * queues to this station will not be transmitted. The fw will
2274 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2275 */
2276 break;
2277 case STA_NOTIFY_AWAKE:
2278 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2279 break;
2280 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2281 break;
2282 default:
2283 break;
2284 }
2285 }
2286
2287 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2288 struct ieee80211_vif *vif,
2289 struct ieee80211_sta *sta)
2290 {
2291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2292 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2293
2294 /*
2295 * This is called before mac80211 does RCU synchronisation,
2296 * so here we already invalidate our internal RCU-protected
2297 * station pointer. The rest of the code will thus no longer
2298 * be able to find the station this way, and we don't rely
2299 * on further RCU synchronisation after the sta_state()
2300 * callback deleted the station.
2301 */
2302 mutex_lock(&mvm->mutex);
2303 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2304 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2305 ERR_PTR(-ENOENT));
2306 mutex_unlock(&mvm->mutex);
2307 }
2308
2309 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif,
2311 struct ieee80211_sta *sta,
2312 enum ieee80211_sta_state old_state,
2313 enum ieee80211_sta_state new_state)
2314 {
2315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2316 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2317 int ret;
2318
2319 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2320 sta->addr, old_state, new_state);
2321
2322 /* this would be a mac80211 bug ... but don't crash */
2323 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2324 return -EINVAL;
2325
2326 /* if a STA is being removed, reuse its ID */
2327 flush_work(&mvm->sta_drained_wk);
2328
2329 mutex_lock(&mvm->mutex);
2330 if (old_state == IEEE80211_STA_NOTEXIST &&
2331 new_state == IEEE80211_STA_NONE) {
2332 /*
2333 * Firmware bug - it'll crash if the beacon interval is less
2334 * than 16. We can't avoid connecting at all, so refuse the
2335 * station state change, this will cause mac80211 to abandon
2336 * attempts to connect to this AP, and eventually wpa_s will
2337 * blacklist the AP...
2338 */
2339 if (vif->type == NL80211_IFTYPE_STATION &&
2340 vif->bss_conf.beacon_int < 16) {
2341 IWL_ERR(mvm,
2342 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2343 sta->addr, vif->bss_conf.beacon_int);
2344 ret = -EINVAL;
2345 goto out_unlock;
2346 }
2347
2348 if (sta->tdls &&
2349 (vif->p2p ||
2350 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2351 IWL_MVM_TDLS_STA_COUNT ||
2352 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2353 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2354 ret = -EBUSY;
2355 goto out_unlock;
2356 }
2357
2358 ret = iwl_mvm_add_sta(mvm, vif, sta);
2359 if (sta->tdls && ret == 0)
2360 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2361 } else if (old_state == IEEE80211_STA_NONE &&
2362 new_state == IEEE80211_STA_AUTH) {
2363 /*
2364 * EBS may be disabled due to previous failures reported by FW.
2365 * Reset EBS status here assuming environment has been changed.
2366 */
2367 mvm->last_ebs_successful = true;
2368 ret = 0;
2369 } else if (old_state == IEEE80211_STA_AUTH &&
2370 new_state == IEEE80211_STA_ASSOC) {
2371 ret = iwl_mvm_update_sta(mvm, vif, sta);
2372 if (ret == 0)
2373 iwl_mvm_rs_rate_init(mvm, sta,
2374 mvmvif->phy_ctxt->channel->band,
2375 true);
2376 } else if (old_state == IEEE80211_STA_ASSOC &&
2377 new_state == IEEE80211_STA_AUTHORIZED) {
2378
2379 /* we don't support TDLS during DCM */
2380 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2381 iwl_mvm_teardown_tdls_peers(mvm);
2382
2383 /* enable beacon filtering */
2384 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2385 ret = 0;
2386 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2387 new_state == IEEE80211_STA_ASSOC) {
2388 /* disable beacon filtering */
2389 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2390 ret = 0;
2391 } else if (old_state == IEEE80211_STA_ASSOC &&
2392 new_state == IEEE80211_STA_AUTH) {
2393 ret = 0;
2394 } else if (old_state == IEEE80211_STA_AUTH &&
2395 new_state == IEEE80211_STA_NONE) {
2396 ret = 0;
2397 } else if (old_state == IEEE80211_STA_NONE &&
2398 new_state == IEEE80211_STA_NOTEXIST) {
2399 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2400 if (sta->tdls)
2401 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2402 } else {
2403 ret = -EIO;
2404 }
2405 out_unlock:
2406 mutex_unlock(&mvm->mutex);
2407
2408 if (sta->tdls && ret == 0) {
2409 if (old_state == IEEE80211_STA_NOTEXIST &&
2410 new_state == IEEE80211_STA_NONE)
2411 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2412 else if (old_state == IEEE80211_STA_NONE &&
2413 new_state == IEEE80211_STA_NOTEXIST)
2414 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2415 }
2416
2417 return ret;
2418 }
2419
2420 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2421 {
2422 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2423
2424 mvm->rts_threshold = value;
2425
2426 return 0;
2427 }
2428
2429 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2430 struct ieee80211_vif *vif,
2431 struct ieee80211_sta *sta, u32 changed)
2432 {
2433 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2434
2435 if (vif->type == NL80211_IFTYPE_STATION &&
2436 changed & IEEE80211_RC_NSS_CHANGED)
2437 iwl_mvm_sf_update(mvm, vif, false);
2438 }
2439
2440 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2441 struct ieee80211_vif *vif, u16 ac,
2442 const struct ieee80211_tx_queue_params *params)
2443 {
2444 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2445 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2446
2447 mvmvif->queue_params[ac] = *params;
2448
2449 /*
2450 * No need to update right away, we'll get BSS_CHANGED_QOS
2451 * The exception is P2P_DEVICE interface which needs immediate update.
2452 */
2453 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2454 int ret;
2455
2456 mutex_lock(&mvm->mutex);
2457 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2458 mutex_unlock(&mvm->mutex);
2459 return ret;
2460 }
2461 return 0;
2462 }
2463
2464 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2465 struct ieee80211_vif *vif)
2466 {
2467 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2468 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2469 200 + vif->bss_conf.beacon_int);
2470 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2471 100 + vif->bss_conf.beacon_int);
2472
2473 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2474 return;
2475
2476 /*
2477 * iwl_mvm_protect_session() reads directly from the device
2478 * (the system time), so make sure it is available.
2479 */
2480 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2481 return;
2482
2483 mutex_lock(&mvm->mutex);
2484 /* Try really hard to protect the session and hear a beacon */
2485 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2486 mutex_unlock(&mvm->mutex);
2487
2488 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2489 }
2490
2491 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2492 struct ieee80211_vif *vif,
2493 struct cfg80211_sched_scan_request *req,
2494 struct ieee80211_scan_ies *ies)
2495 {
2496 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2497 int ret;
2498
2499 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2500 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2501 if (ret)
2502 return ret;
2503 }
2504
2505 mutex_lock(&mvm->mutex);
2506
2507 /* Newest FW fixes sched scan while connected on another interface */
2508 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2509 if (!vif->bss_conf.idle) {
2510 ret = -EBUSY;
2511 goto out;
2512 }
2513 } else if (!iwl_mvm_is_idle(mvm)) {
2514 ret = -EBUSY;
2515 goto out;
2516 }
2517
2518 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2519 ret = -EBUSY;
2520 goto out;
2521 }
2522
2523 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2524 if (ret)
2525 mvm->scan_status = IWL_MVM_SCAN_NONE;
2526
2527 out:
2528 mutex_unlock(&mvm->mutex);
2529 return ret;
2530 }
2531
2532 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2533 struct ieee80211_vif *vif)
2534 {
2535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2536 int ret;
2537
2538 mutex_lock(&mvm->mutex);
2539 ret = iwl_mvm_scan_offload_stop(mvm, false);
2540 mutex_unlock(&mvm->mutex);
2541 iwl_mvm_wait_for_async_handlers(mvm);
2542
2543 return ret;
2544
2545 }
2546
2547 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2548 enum set_key_cmd cmd,
2549 struct ieee80211_vif *vif,
2550 struct ieee80211_sta *sta,
2551 struct ieee80211_key_conf *key)
2552 {
2553 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2554 int ret;
2555
2556 if (iwlwifi_mod_params.sw_crypto) {
2557 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2558 return -EOPNOTSUPP;
2559 }
2560
2561 switch (key->cipher) {
2562 case WLAN_CIPHER_SUITE_TKIP:
2563 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2564 /* fall-through */
2565 case WLAN_CIPHER_SUITE_CCMP:
2566 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2567 break;
2568 case WLAN_CIPHER_SUITE_AES_CMAC:
2569 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2570 break;
2571 case WLAN_CIPHER_SUITE_WEP40:
2572 case WLAN_CIPHER_SUITE_WEP104:
2573 /* For non-client mode, only use WEP keys for TX as we probably
2574 * don't have a station yet anyway and would then have to keep
2575 * track of the keys, linking them to each of the clients/peers
2576 * as they appear. For now, don't do that, for performance WEP
2577 * offload doesn't really matter much, but we need it for some
2578 * other offload features in client mode.
2579 */
2580 if (vif->type != NL80211_IFTYPE_STATION)
2581 return 0;
2582 break;
2583 default:
2584 /* currently FW supports only one optional cipher scheme */
2585 if (hw->n_cipher_schemes &&
2586 hw->cipher_schemes->cipher == key->cipher)
2587 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2588 else
2589 return -EOPNOTSUPP;
2590 }
2591
2592 mutex_lock(&mvm->mutex);
2593
2594 switch (cmd) {
2595 case SET_KEY:
2596 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2597 vif->type == NL80211_IFTYPE_AP) && !sta) {
2598 /*
2599 * GTK on AP interface is a TX-only key, return 0;
2600 * on IBSS they're per-station and because we're lazy
2601 * we don't support them for RX, so do the same.
2602 */
2603 ret = 0;
2604 key->hw_key_idx = STA_KEY_IDX_INVALID;
2605 break;
2606 }
2607
2608 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2609 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2610 if (ret) {
2611 IWL_WARN(mvm, "set key failed\n");
2612 /*
2613 * can't add key for RX, but we don't need it
2614 * in the device for TX so still return 0
2615 */
2616 key->hw_key_idx = STA_KEY_IDX_INVALID;
2617 ret = 0;
2618 }
2619
2620 break;
2621 case DISABLE_KEY:
2622 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2623 ret = 0;
2624 break;
2625 }
2626
2627 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2628 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2629 break;
2630 default:
2631 ret = -EINVAL;
2632 }
2633
2634 mutex_unlock(&mvm->mutex);
2635 return ret;
2636 }
2637
2638 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2639 struct ieee80211_vif *vif,
2640 struct ieee80211_key_conf *keyconf,
2641 struct ieee80211_sta *sta,
2642 u32 iv32, u16 *phase1key)
2643 {
2644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2645
2646 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2647 return;
2648
2649 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2650 }
2651
2652
2653 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2654 struct iwl_rx_packet *pkt, void *data)
2655 {
2656 struct iwl_mvm *mvm =
2657 container_of(notif_wait, struct iwl_mvm, notif_wait);
2658 struct iwl_hs20_roc_res *resp;
2659 int resp_len = iwl_rx_packet_payload_len(pkt);
2660 struct iwl_mvm_time_event_data *te_data = data;
2661
2662 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2663 return true;
2664
2665 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2666 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2667 return true;
2668 }
2669
2670 resp = (void *)pkt->data;
2671
2672 IWL_DEBUG_TE(mvm,
2673 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2674 resp->status, resp->event_unique_id);
2675
2676 te_data->uid = le32_to_cpu(resp->event_unique_id);
2677 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2678 te_data->uid);
2679
2680 spin_lock_bh(&mvm->time_event_lock);
2681 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2682 spin_unlock_bh(&mvm->time_event_lock);
2683
2684 return true;
2685 }
2686
2687 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2688 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2689 struct ieee80211_channel *channel,
2690 struct ieee80211_vif *vif,
2691 int duration)
2692 {
2693 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2695 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2696 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2697 struct iwl_notification_wait wait_time_event;
2698 struct iwl_hs20_roc_req aux_roc_req = {
2699 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2700 .id_and_color =
2701 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2702 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2703 /* Set the channel info data */
2704 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2705 PHY_BAND_24 : PHY_BAND_5,
2706 .channel_info.channel = channel->hw_value,
2707 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2708 /* Set the time and duration */
2709 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2710 .apply_time_max_delay =
2711 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2712 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2713 };
2714
2715 /* Set the node address */
2716 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2717
2718 lockdep_assert_held(&mvm->mutex);
2719
2720 spin_lock_bh(&mvm->time_event_lock);
2721
2722 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2723 spin_unlock_bh(&mvm->time_event_lock);
2724 return -EIO;
2725 }
2726
2727 te_data->vif = vif;
2728 te_data->duration = duration;
2729 te_data->id = HOT_SPOT_CMD;
2730
2731 spin_unlock_bh(&mvm->time_event_lock);
2732
2733 /*
2734 * Use a notification wait, which really just processes the
2735 * command response and doesn't wait for anything, in order
2736 * to be able to process the response and get the UID inside
2737 * the RX path. Using CMD_WANT_SKB doesn't work because it
2738 * stores the buffer and then wakes up this thread, by which
2739 * time another notification (that the time event started)
2740 * might already be processed unsuccessfully.
2741 */
2742 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2743 time_event_response,
2744 ARRAY_SIZE(time_event_response),
2745 iwl_mvm_rx_aux_roc, te_data);
2746
2747 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2748 &aux_roc_req);
2749
2750 if (res) {
2751 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2752 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2753 goto out_clear_te;
2754 }
2755
2756 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2757 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2758 /* should never fail */
2759 WARN_ON_ONCE(res);
2760
2761 if (res) {
2762 out_clear_te:
2763 spin_lock_bh(&mvm->time_event_lock);
2764 iwl_mvm_te_clear_data(mvm, te_data);
2765 spin_unlock_bh(&mvm->time_event_lock);
2766 }
2767
2768 return res;
2769 }
2770
2771 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2772 struct ieee80211_vif *vif,
2773 struct ieee80211_channel *channel,
2774 int duration,
2775 enum ieee80211_roc_type type)
2776 {
2777 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2779 struct cfg80211_chan_def chandef;
2780 struct iwl_mvm_phy_ctxt *phy_ctxt;
2781 int ret, i;
2782
2783 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2784 duration, type);
2785
2786 mutex_lock(&mvm->mutex);
2787
2788 switch (vif->type) {
2789 case NL80211_IFTYPE_STATION:
2790 if (mvm->fw->ucode_capa.capa[0] &
2791 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2792 /* Use aux roc framework (HS20) */
2793 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2794 vif, duration);
2795 goto out_unlock;
2796 }
2797 IWL_ERR(mvm, "hotspot not supported\n");
2798 ret = -EINVAL;
2799 goto out_unlock;
2800 case NL80211_IFTYPE_P2P_DEVICE:
2801 /* handle below */
2802 break;
2803 default:
2804 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2805 ret = -EINVAL;
2806 goto out_unlock;
2807 }
2808
2809 for (i = 0; i < NUM_PHY_CTX; i++) {
2810 phy_ctxt = &mvm->phy_ctxts[i];
2811 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2812 continue;
2813
2814 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2815 /*
2816 * Unbind the P2P_DEVICE from the current PHY context,
2817 * and if the PHY context is not used remove it.
2818 */
2819 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2820 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2821 goto out_unlock;
2822
2823 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2824
2825 /* Bind the P2P_DEVICE to the current PHY Context */
2826 mvmvif->phy_ctxt = phy_ctxt;
2827
2828 ret = iwl_mvm_binding_add_vif(mvm, vif);
2829 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2830 goto out_unlock;
2831
2832 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2833 goto schedule_time_event;
2834 }
2835 }
2836
2837 /* Need to update the PHY context only if the ROC channel changed */
2838 if (channel == mvmvif->phy_ctxt->channel)
2839 goto schedule_time_event;
2840
2841 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2842
2843 /*
2844 * Change the PHY context configuration as it is currently referenced
2845 * only by the P2P Device MAC
2846 */
2847 if (mvmvif->phy_ctxt->ref == 1) {
2848 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2849 &chandef, 1, 1);
2850 if (ret)
2851 goto out_unlock;
2852 } else {
2853 /*
2854 * The PHY context is shared with other MACs. Need to remove the
2855 * P2P Device from the binding, allocate an new PHY context and
2856 * create a new binding
2857 */
2858 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2859 if (!phy_ctxt) {
2860 ret = -ENOSPC;
2861 goto out_unlock;
2862 }
2863
2864 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2865 1, 1);
2866 if (ret) {
2867 IWL_ERR(mvm, "Failed to change PHY context\n");
2868 goto out_unlock;
2869 }
2870
2871 /* Unbind the P2P_DEVICE from the current PHY context */
2872 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2873 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2874 goto out_unlock;
2875
2876 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2877
2878 /* Bind the P2P_DEVICE to the new allocated PHY context */
2879 mvmvif->phy_ctxt = phy_ctxt;
2880
2881 ret = iwl_mvm_binding_add_vif(mvm, vif);
2882 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2883 goto out_unlock;
2884
2885 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2886 }
2887
2888 schedule_time_event:
2889 /* Schedule the time events */
2890 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2891
2892 out_unlock:
2893 mutex_unlock(&mvm->mutex);
2894 IWL_DEBUG_MAC80211(mvm, "leave\n");
2895 return ret;
2896 }
2897
2898 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2899 {
2900 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2901
2902 IWL_DEBUG_MAC80211(mvm, "enter\n");
2903
2904 mutex_lock(&mvm->mutex);
2905 iwl_mvm_stop_roc(mvm);
2906 mutex_unlock(&mvm->mutex);
2907
2908 IWL_DEBUG_MAC80211(mvm, "leave\n");
2909 return 0;
2910 }
2911
2912 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2913 struct ieee80211_chanctx_conf *ctx)
2914 {
2915 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2916 struct iwl_mvm_phy_ctxt *phy_ctxt;
2917 int ret;
2918
2919 lockdep_assert_held(&mvm->mutex);
2920
2921 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2922
2923 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2924 if (!phy_ctxt) {
2925 ret = -ENOSPC;
2926 goto out;
2927 }
2928
2929 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2930 ctx->rx_chains_static,
2931 ctx->rx_chains_dynamic);
2932 if (ret) {
2933 IWL_ERR(mvm, "Failed to add PHY context\n");
2934 goto out;
2935 }
2936
2937 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2938 *phy_ctxt_id = phy_ctxt->id;
2939 out:
2940 return ret;
2941 }
2942
2943 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2944 struct ieee80211_chanctx_conf *ctx)
2945 {
2946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2947 int ret;
2948
2949 mutex_lock(&mvm->mutex);
2950 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2951 mutex_unlock(&mvm->mutex);
2952
2953 return ret;
2954 }
2955
2956 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2957 struct ieee80211_chanctx_conf *ctx)
2958 {
2959 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2960 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2961
2962 lockdep_assert_held(&mvm->mutex);
2963
2964 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2965 }
2966
2967 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2968 struct ieee80211_chanctx_conf *ctx)
2969 {
2970 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2971
2972 mutex_lock(&mvm->mutex);
2973 __iwl_mvm_remove_chanctx(mvm, ctx);
2974 mutex_unlock(&mvm->mutex);
2975 }
2976
2977 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2978 struct ieee80211_chanctx_conf *ctx,
2979 u32 changed)
2980 {
2981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2982 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2983 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2984
2985 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2986 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2987 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2988 IEEE80211_CHANCTX_CHANGE_RADAR |
2989 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2990 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2991 phy_ctxt->ref, changed))
2992 return;
2993
2994 mutex_lock(&mvm->mutex);
2995 iwl_mvm_bt_coex_vif_change(mvm);
2996 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2997 ctx->rx_chains_static,
2998 ctx->rx_chains_dynamic);
2999 mutex_unlock(&mvm->mutex);
3000 }
3001
3002 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3003 struct ieee80211_vif *vif,
3004 struct ieee80211_chanctx_conf *ctx,
3005 bool switching_chanctx)
3006 {
3007 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3008 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3009 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3010 int ret;
3011
3012 lockdep_assert_held(&mvm->mutex);
3013
3014 mvmvif->phy_ctxt = phy_ctxt;
3015
3016 switch (vif->type) {
3017 case NL80211_IFTYPE_AP:
3018 /* only needed if we're switching chanctx (i.e. during CSA) */
3019 if (switching_chanctx) {
3020 mvmvif->ap_ibss_active = true;
3021 break;
3022 }
3023 case NL80211_IFTYPE_ADHOC:
3024 /*
3025 * The AP binding flow is handled as part of the start_ap flow
3026 * (in bss_info_changed), similarly for IBSS.
3027 */
3028 ret = 0;
3029 goto out;
3030 case NL80211_IFTYPE_STATION:
3031 break;
3032 case NL80211_IFTYPE_MONITOR:
3033 /* always disable PS when a monitor interface is active */
3034 mvmvif->ps_disabled = true;
3035 break;
3036 default:
3037 ret = -EINVAL;
3038 goto out;
3039 }
3040
3041 ret = iwl_mvm_binding_add_vif(mvm, vif);
3042 if (ret)
3043 goto out;
3044
3045 /*
3046 * Power state must be updated before quotas,
3047 * otherwise fw will complain.
3048 */
3049 iwl_mvm_power_update_mac(mvm);
3050
3051 /* Setting the quota at this stage is only required for monitor
3052 * interfaces. For the other types, the bss_info changed flow
3053 * will handle quota settings.
3054 */
3055 if (vif->type == NL80211_IFTYPE_MONITOR) {
3056 mvmvif->monitor_active = true;
3057 ret = iwl_mvm_update_quotas(mvm, NULL);
3058 if (ret)
3059 goto out_remove_binding;
3060 }
3061
3062 /* Handle binding during CSA */
3063 if (vif->type == NL80211_IFTYPE_AP) {
3064 iwl_mvm_update_quotas(mvm, NULL);
3065 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3066 }
3067
3068 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3069 u32 duration = 2 * vif->bss_conf.beacon_int;
3070
3071 /* iwl_mvm_protect_session() reads directly from the
3072 * device (the system time), so make sure it is
3073 * available.
3074 */
3075 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3076 if (ret)
3077 goto out_remove_binding;
3078
3079 /* Protect the session to make sure we hear the first
3080 * beacon on the new channel.
3081 */
3082 iwl_mvm_protect_session(mvm, vif, duration, duration,
3083 vif->bss_conf.beacon_int / 2,
3084 true);
3085
3086 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3087
3088 iwl_mvm_update_quotas(mvm, NULL);
3089 }
3090
3091 goto out;
3092
3093 out_remove_binding:
3094 iwl_mvm_binding_remove_vif(mvm, vif);
3095 iwl_mvm_power_update_mac(mvm);
3096 out:
3097 if (ret)
3098 mvmvif->phy_ctxt = NULL;
3099 return ret;
3100 }
3101 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3102 struct ieee80211_vif *vif,
3103 struct ieee80211_chanctx_conf *ctx)
3104 {
3105 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3106 int ret;
3107
3108 mutex_lock(&mvm->mutex);
3109 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3110 mutex_unlock(&mvm->mutex);
3111
3112 return ret;
3113 }
3114
3115 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3116 struct ieee80211_vif *vif,
3117 struct ieee80211_chanctx_conf *ctx,
3118 bool switching_chanctx)
3119 {
3120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3121 struct ieee80211_vif *disabled_vif = NULL;
3122
3123 lockdep_assert_held(&mvm->mutex);
3124
3125 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3126
3127 switch (vif->type) {
3128 case NL80211_IFTYPE_ADHOC:
3129 goto out;
3130 case NL80211_IFTYPE_MONITOR:
3131 mvmvif->monitor_active = false;
3132 mvmvif->ps_disabled = false;
3133 break;
3134 case NL80211_IFTYPE_AP:
3135 /* This part is triggered only during CSA */
3136 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3137 goto out;
3138
3139 mvmvif->csa_countdown = false;
3140
3141 /* Set CS bit on all the stations */
3142 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3143
3144 /* Save blocked iface, the timeout is set on the next beacon */
3145 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3146
3147 mvmvif->ap_ibss_active = false;
3148 break;
3149 case NL80211_IFTYPE_STATION:
3150 if (!switching_chanctx)
3151 break;
3152
3153 disabled_vif = vif;
3154
3155 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3156 break;
3157 default:
3158 break;
3159 }
3160
3161 iwl_mvm_update_quotas(mvm, disabled_vif);
3162 iwl_mvm_binding_remove_vif(mvm, vif);
3163
3164 out:
3165 mvmvif->phy_ctxt = NULL;
3166 iwl_mvm_power_update_mac(mvm);
3167 }
3168
3169 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3170 struct ieee80211_vif *vif,
3171 struct ieee80211_chanctx_conf *ctx)
3172 {
3173 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3174
3175 mutex_lock(&mvm->mutex);
3176 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3177 mutex_unlock(&mvm->mutex);
3178 }
3179
3180 static int
3181 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3182 struct ieee80211_vif_chanctx_switch *vifs)
3183 {
3184 int ret;
3185
3186 mutex_lock(&mvm->mutex);
3187 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3188 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3189
3190 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3191 if (ret) {
3192 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3193 goto out_reassign;
3194 }
3195
3196 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3197 true);
3198 if (ret) {
3199 IWL_ERR(mvm,
3200 "failed to assign new_ctx during channel switch\n");
3201 goto out_remove;
3202 }
3203
3204 /* we don't support TDLS during DCM - can be caused by channel switch */
3205 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3206 iwl_mvm_teardown_tdls_peers(mvm);
3207
3208 goto out;
3209
3210 out_remove:
3211 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3212
3213 out_reassign:
3214 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3215 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3216 goto out_restart;
3217 }
3218
3219 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3220 true)) {
3221 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3222 goto out_restart;
3223 }
3224
3225 goto out;
3226
3227 out_restart:
3228 /* things keep failing, better restart the hw */
3229 iwl_mvm_nic_restart(mvm, false);
3230
3231 out:
3232 mutex_unlock(&mvm->mutex);
3233
3234 return ret;
3235 }
3236
3237 static int
3238 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3239 struct ieee80211_vif_chanctx_switch *vifs)
3240 {
3241 int ret;
3242
3243 mutex_lock(&mvm->mutex);
3244 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3245
3246 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3247 true);
3248 if (ret) {
3249 IWL_ERR(mvm,
3250 "failed to assign new_ctx during channel switch\n");
3251 goto out_reassign;
3252 }
3253
3254 goto out;
3255
3256 out_reassign:
3257 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3258 true)) {
3259 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3260 goto out_restart;
3261 }
3262
3263 goto out;
3264
3265 out_restart:
3266 /* things keep failing, better restart the hw */
3267 iwl_mvm_nic_restart(mvm, false);
3268
3269 out:
3270 mutex_unlock(&mvm->mutex);
3271
3272 return ret;
3273 }
3274
3275 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3276 struct ieee80211_vif_chanctx_switch *vifs,
3277 int n_vifs,
3278 enum ieee80211_chanctx_switch_mode mode)
3279 {
3280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3281 int ret;
3282
3283 /* we only support a single-vif right now */
3284 if (n_vifs > 1)
3285 return -EOPNOTSUPP;
3286
3287 switch (mode) {
3288 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3289 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3290 break;
3291 case CHANCTX_SWMODE_REASSIGN_VIF:
3292 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3293 break;
3294 default:
3295 ret = -EOPNOTSUPP;
3296 break;
3297 }
3298
3299 return ret;
3300 }
3301
3302 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3303 struct ieee80211_sta *sta,
3304 bool set)
3305 {
3306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3307 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3308
3309 if (!mvm_sta || !mvm_sta->vif) {
3310 IWL_ERR(mvm, "Station is not associated to a vif\n");
3311 return -EINVAL;
3312 }
3313
3314 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3315 }
3316
3317 #ifdef CONFIG_NL80211_TESTMODE
3318 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3319 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3320 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3321 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3322 };
3323
3324 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3325 struct ieee80211_vif *vif,
3326 void *data, int len)
3327 {
3328 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3329 int err;
3330 u32 noa_duration;
3331
3332 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3333 if (err)
3334 return err;
3335
3336 if (!tb[IWL_MVM_TM_ATTR_CMD])
3337 return -EINVAL;
3338
3339 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3340 case IWL_MVM_TM_CMD_SET_NOA:
3341 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3342 !vif->bss_conf.enable_beacon ||
3343 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3344 return -EINVAL;
3345
3346 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3347 if (noa_duration >= vif->bss_conf.beacon_int)
3348 return -EINVAL;
3349
3350 mvm->noa_duration = noa_duration;
3351 mvm->noa_vif = vif;
3352
3353 return iwl_mvm_update_quotas(mvm, NULL);
3354 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3355 /* must be associated client vif - ignore authorized */
3356 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3357 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3358 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3359 return -EINVAL;
3360
3361 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3362 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3363 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3364 }
3365
3366 return -EOPNOTSUPP;
3367 }
3368
3369 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3370 struct ieee80211_vif *vif,
3371 void *data, int len)
3372 {
3373 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3374 int err;
3375
3376 mutex_lock(&mvm->mutex);
3377 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3378 mutex_unlock(&mvm->mutex);
3379
3380 return err;
3381 }
3382 #endif
3383
3384 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3385 struct ieee80211_vif *vif,
3386 struct ieee80211_channel_switch *chsw)
3387 {
3388 /* By implementing this operation, we prevent mac80211 from
3389 * starting its own channel switch timer, so that we can call
3390 * ieee80211_chswitch_done() ourselves at the right time
3391 * (which is when the absence time event starts).
3392 */
3393
3394 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3395 "dummy channel switch op\n");
3396 }
3397
3398 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3399 struct ieee80211_vif *vif,
3400 struct ieee80211_channel_switch *chsw)
3401 {
3402 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3403 struct ieee80211_vif *csa_vif;
3404 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3405 u32 apply_time;
3406 int ret;
3407
3408 mutex_lock(&mvm->mutex);
3409
3410 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3411 chsw->chandef.center_freq1);
3412
3413 switch (vif->type) {
3414 case NL80211_IFTYPE_AP:
3415 csa_vif =
3416 rcu_dereference_protected(mvm->csa_vif,
3417 lockdep_is_held(&mvm->mutex));
3418 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3419 "Another CSA is already in progress")) {
3420 ret = -EBUSY;
3421 goto out_unlock;
3422 }
3423
3424 rcu_assign_pointer(mvm->csa_vif, vif);
3425
3426 if (WARN_ONCE(mvmvif->csa_countdown,
3427 "Previous CSA countdown didn't complete")) {
3428 ret = -EBUSY;
3429 goto out_unlock;
3430 }
3431
3432 break;
3433 case NL80211_IFTYPE_STATION:
3434 /* Schedule the time event to a bit before beacon 1,
3435 * to make sure we're in the new channel when the
3436 * GO/AP arrives.
3437 */
3438 apply_time = chsw->device_timestamp +
3439 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3440 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3441
3442 if (chsw->block_tx)
3443 iwl_mvm_csa_client_absent(mvm, vif);
3444
3445 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3446 apply_time);
3447 if (mvmvif->bf_data.bf_enabled) {
3448 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3449 if (ret)
3450 goto out_unlock;
3451 }
3452
3453 break;
3454 default:
3455 break;
3456 }
3457
3458 mvmvif->ps_disabled = true;
3459
3460 ret = iwl_mvm_power_update_ps(mvm);
3461 if (ret)
3462 goto out_unlock;
3463
3464 /* we won't be on this channel any longer */
3465 iwl_mvm_teardown_tdls_peers(mvm);
3466
3467 out_unlock:
3468 mutex_unlock(&mvm->mutex);
3469
3470 return ret;
3471 }
3472
3473 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3474 struct ieee80211_vif *vif)
3475 {
3476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3477 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3478 int ret;
3479
3480 mutex_lock(&mvm->mutex);
3481
3482 if (vif->type == NL80211_IFTYPE_STATION) {
3483 struct iwl_mvm_sta *mvmsta;
3484
3485 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3486 mvmvif->ap_sta_id);
3487
3488 if (WARN_ON(!mvmsta)) {
3489 ret = -EIO;
3490 goto out_unlock;
3491 }
3492
3493 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3494
3495 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3496
3497 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3498 if (ret)
3499 goto out_unlock;
3500
3501 iwl_mvm_stop_session_protection(mvm, vif);
3502 }
3503
3504 mvmvif->ps_disabled = false;
3505
3506 ret = iwl_mvm_power_update_ps(mvm);
3507
3508 out_unlock:
3509 mutex_unlock(&mvm->mutex);
3510
3511 return ret;
3512 }
3513
3514 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3515 struct ieee80211_vif *vif, u32 queues, bool drop)
3516 {
3517 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3518 struct iwl_mvm_vif *mvmvif;
3519 struct iwl_mvm_sta *mvmsta;
3520 struct ieee80211_sta *sta;
3521 int i;
3522 u32 msk = 0;
3523
3524 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3525 return;
3526
3527 mutex_lock(&mvm->mutex);
3528 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3529
3530 /* flush the AP-station and all TDLS peers */
3531 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3532 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3533 lockdep_is_held(&mvm->mutex));
3534 if (IS_ERR_OR_NULL(sta))
3535 continue;
3536
3537 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3538 if (mvmsta->vif != vif)
3539 continue;
3540
3541 /* make sure only TDLS peers or the AP are flushed */
3542 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3543
3544 msk |= mvmsta->tfd_queue_msk;
3545 }
3546
3547 if (drop) {
3548 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3549 IWL_ERR(mvm, "flush request fail\n");
3550 mutex_unlock(&mvm->mutex);
3551 } else {
3552 mutex_unlock(&mvm->mutex);
3553
3554 /* this can take a while, and we may need/want other operations
3555 * to succeed while doing this, so do it without the mutex held
3556 */
3557 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3558 }
3559 }
3560
3561 const struct ieee80211_ops iwl_mvm_hw_ops = {
3562 .tx = iwl_mvm_mac_tx,
3563 .ampdu_action = iwl_mvm_mac_ampdu_action,
3564 .start = iwl_mvm_mac_start,
3565 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3566 .stop = iwl_mvm_mac_stop,
3567 .add_interface = iwl_mvm_mac_add_interface,
3568 .remove_interface = iwl_mvm_mac_remove_interface,
3569 .config = iwl_mvm_mac_config,
3570 .prepare_multicast = iwl_mvm_prepare_multicast,
3571 .configure_filter = iwl_mvm_configure_filter,
3572 .bss_info_changed = iwl_mvm_bss_info_changed,
3573 .hw_scan = iwl_mvm_mac_hw_scan,
3574 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3575 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3576 .sta_state = iwl_mvm_mac_sta_state,
3577 .sta_notify = iwl_mvm_mac_sta_notify,
3578 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3579 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3580 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3581 .sta_rc_update = iwl_mvm_sta_rc_update,
3582 .conf_tx = iwl_mvm_mac_conf_tx,
3583 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3584 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3585 .flush = iwl_mvm_mac_flush,
3586 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3587 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3588 .set_key = iwl_mvm_mac_set_key,
3589 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3590 .remain_on_channel = iwl_mvm_roc,
3591 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3592 .add_chanctx = iwl_mvm_add_chanctx,
3593 .remove_chanctx = iwl_mvm_remove_chanctx,
3594 .change_chanctx = iwl_mvm_change_chanctx,
3595 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3596 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3597 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3598
3599 .start_ap = iwl_mvm_start_ap_ibss,
3600 .stop_ap = iwl_mvm_stop_ap_ibss,
3601 .join_ibss = iwl_mvm_start_ap_ibss,
3602 .leave_ibss = iwl_mvm_stop_ap_ibss,
3603
3604 .set_tim = iwl_mvm_set_tim,
3605
3606 .channel_switch = iwl_mvm_channel_switch,
3607 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3608 .post_channel_switch = iwl_mvm_post_channel_switch,
3609
3610 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3611 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3612 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3613
3614 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3615
3616 #ifdef CONFIG_PM_SLEEP
3617 /* look at d3.c */
3618 .suspend = iwl_mvm_suspend,
3619 .resume = iwl_mvm_resume,
3620 .set_wakeup = iwl_mvm_set_wakeup,
3621 .set_rekey_data = iwl_mvm_set_rekey_data,
3622 #if IS_ENABLED(CONFIG_IPV6)
3623 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3624 #endif
3625 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3626 #endif
3627 };
Linux kernel - Deliverables
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