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iwlwifi: mvm: reset beacon filtering and BT Coex data upon FW restart
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <linux/kernel.h>
64 #include <linux/slab.h>
65 #include <linux/skbuff.h>
66 #include <linux/netdevice.h>
67 #include <linux/etherdevice.h>
68 #include <linux/ip.h>
69 #include <linux/if_arp.h>
70 #include <net/mac80211.h>
71 #include <net/ieee80211_radiotap.h>
72 #include <net/tcp.h>
73
74 #include "iwl-op-mode.h"
75 #include "iwl-io.h"
76 #include "mvm.h"
77 #include "sta.h"
78 #include "time-event.h"
79 #include "iwl-eeprom-parse.h"
80 #include "fw-api-scan.h"
81 #include "iwl-phy-db.h"
82 #include "testmode.h"
83 #include "iwl-fw-error-dump.h"
84 #include "iwl-prph.h"
85
86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_STATION),
90 },
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
95 BIT(NL80211_IFTYPE_P2P_GO),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
100 },
101 };
102
103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
104 {
105 .num_different_channels = 1,
106 .max_interfaces = 3,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
109 },
110 };
111
112 #ifdef CONFIG_PM_SLEEP
113 static const struct nl80211_wowlan_tcp_data_token_feature
114 iwl_mvm_wowlan_tcp_token_feature = {
115 .min_len = 0,
116 .max_len = 255,
117 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
118 };
119
120 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
121 .tok = &iwl_mvm_wowlan_tcp_token_feature,
122 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .data_interval_max = 65535, /* __le16 in API */
127 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .seq = true,
132 };
133 #endif
134
135 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
136 /*
137 * Use the reserved field to indicate magic values.
138 * these values will only be used internally by the driver,
139 * and won't make it to the fw (reserved will be 0).
140 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
141 * be the vif's ip address. in case there is not a single
142 * ip address (0, or more than 1), this attribute will
143 * be skipped.
144 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
145 * the LSB bytes of the vif's mac address
146 */
147 enum {
148 BC_FILTER_MAGIC_NONE = 0,
149 BC_FILTER_MAGIC_IP,
150 BC_FILTER_MAGIC_MAC,
151 };
152
153 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
154 {
155 /* arp */
156 .discard = 0,
157 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
158 .attrs = {
159 {
160 /* frame type - arp, hw type - ethernet */
161 .offset_type =
162 BCAST_FILTER_OFFSET_PAYLOAD_START,
163 .offset = sizeof(rfc1042_header),
164 .val = cpu_to_be32(0x08060001),
165 .mask = cpu_to_be32(0xffffffff),
166 },
167 {
168 /* arp dest ip */
169 .offset_type =
170 BCAST_FILTER_OFFSET_PAYLOAD_START,
171 .offset = sizeof(rfc1042_header) + 2 +
172 sizeof(struct arphdr) +
173 ETH_ALEN + sizeof(__be32) +
174 ETH_ALEN,
175 .mask = cpu_to_be32(0xffffffff),
176 /* mark it as special field */
177 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
178 },
179 },
180 },
181 {
182 /* dhcp offer bcast */
183 .discard = 0,
184 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
185 .attrs = {
186 {
187 /* udp dest port - 68 (bootp client)*/
188 .offset_type = BCAST_FILTER_OFFSET_IP_END,
189 .offset = offsetof(struct udphdr, dest),
190 .val = cpu_to_be32(0x00440000),
191 .mask = cpu_to_be32(0xffff0000),
192 },
193 {
194 /* dhcp - lsb bytes of client hw address */
195 .offset_type = BCAST_FILTER_OFFSET_IP_END,
196 .offset = 38,
197 .mask = cpu_to_be32(0xffffffff),
198 /* mark it as special field */
199 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
200 },
201 },
202 },
203 /* last filter must be empty */
204 {},
205 };
206 #endif
207
208 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
209 {
210 if (!iwl_mvm_is_d0i3_supported(mvm))
211 return;
212
213 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
214 spin_lock_bh(&mvm->refs_lock);
215 mvm->refs[ref_type]++;
216 spin_unlock_bh(&mvm->refs_lock);
217 iwl_trans_ref(mvm->trans);
218 }
219
220 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
221 {
222 if (!iwl_mvm_is_d0i3_supported(mvm))
223 return;
224
225 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
226 spin_lock_bh(&mvm->refs_lock);
227 WARN_ON(!mvm->refs[ref_type]--);
228 spin_unlock_bh(&mvm->refs_lock);
229 iwl_trans_unref(mvm->trans);
230 }
231
232 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
233 enum iwl_mvm_ref_type except_ref)
234 {
235 int i, j;
236
237 if (!iwl_mvm_is_d0i3_supported(mvm))
238 return;
239
240 spin_lock_bh(&mvm->refs_lock);
241 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
242 if (except_ref == i || !mvm->refs[i])
243 continue;
244
245 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
246 i, mvm->refs[i]);
247 for (j = 0; j < mvm->refs[i]; j++)
248 iwl_trans_unref(mvm->trans);
249 mvm->refs[i] = 0;
250 }
251 spin_unlock_bh(&mvm->refs_lock);
252 }
253
254 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
255 {
256 iwl_mvm_ref(mvm, ref_type);
257
258 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
259 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
260 HZ)) {
261 WARN_ON_ONCE(1);
262 iwl_mvm_unref(mvm, ref_type);
263 return -EIO;
264 }
265
266 return 0;
267 }
268
269 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
270 {
271 int i;
272
273 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
274 for (i = 0; i < NUM_PHY_CTX; i++) {
275 mvm->phy_ctxts[i].id = i;
276 mvm->phy_ctxts[i].ref = 0;
277 }
278 }
279
280 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
281 {
282 /* we create the 802.11 header and SSID element */
283 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
284 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
285 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
286 }
287
288 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
289 {
290 struct ieee80211_hw *hw = mvm->hw;
291 int num_mac, ret, i;
292
293 /* Tell mac80211 our characteristics */
294 hw->flags = IEEE80211_HW_SIGNAL_DBM |
295 IEEE80211_HW_SPECTRUM_MGMT |
296 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
297 IEEE80211_HW_QUEUE_CONTROL |
298 IEEE80211_HW_WANT_MONITOR_VIF |
299 IEEE80211_HW_SUPPORTS_PS |
300 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
301 IEEE80211_HW_AMPDU_AGGREGATION |
302 IEEE80211_HW_TIMING_BEACON_ONLY |
303 IEEE80211_HW_CONNECTION_MONITOR |
304 IEEE80211_HW_CHANCTX_STA_CSA |
305 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
306 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
307
308 hw->queues = mvm->first_agg_queue;
309 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
310 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
311 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
312 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
313 hw->rate_control_algorithm = "iwl-mvm-rs";
314
315 /*
316 * Enable 11w if advertised by firmware and software crypto
317 * is not enabled (as the firmware will interpret some mgmt
318 * packets, so enabling it with software crypto isn't safe)
319 */
320 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
321 !iwlwifi_mod_params.sw_crypto)
322 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
323
324 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
325 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
326 !iwlwifi_mod_params.uapsd_disable) {
327 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
328 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
329 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
330 }
331
332 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
333 !iwlwifi_mod_params.uapsd_disable) {
334 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
335 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
336 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
337 }
338
339 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
340 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
341
342 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
343 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
344 hw->chanctx_data_size = sizeof(u16);
345
346 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
347 BIT(NL80211_IFTYPE_P2P_CLIENT) |
348 BIT(NL80211_IFTYPE_AP) |
349 BIT(NL80211_IFTYPE_P2P_GO) |
350 BIT(NL80211_IFTYPE_P2P_DEVICE) |
351 BIT(NL80211_IFTYPE_ADHOC);
352
353 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
354 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
355 REGULATORY_DISABLE_BEACON_HINTS;
356
357 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
358 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
359
360 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
361 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
362
363 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
364 hw->wiphy->n_iface_combinations =
365 ARRAY_SIZE(iwl_mvm_iface_combinations);
366
367 hw->wiphy->max_remain_on_channel_duration = 10000;
368 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
369
370 /* Extract MAC address */
371 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
372 hw->wiphy->addresses = mvm->addresses;
373 hw->wiphy->n_addresses = 1;
374
375 /* Extract additional MAC addresses if available */
376 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
377 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
378
379 for (i = 1; i < num_mac; i++) {
380 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
381 ETH_ALEN);
382 mvm->addresses[i].addr[5]++;
383 hw->wiphy->n_addresses++;
384 }
385
386 iwl_mvm_reset_phy_ctxts(mvm);
387
388 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
389
390 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
391
392 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
393 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
394 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
395 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
396 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
397 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
398
399 hw->wiphy->hw_version = mvm->trans->hw_id;
400
401 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
402 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
403 else
404 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
405
406 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
407 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
408 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
409 /* we create the 802.11 header and zero length SSID IE. */
410 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
411
412 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
413 NL80211_FEATURE_LOW_PRIORITY_SCAN |
414 NL80211_FEATURE_P2P_GO_OPPPS;
415
416 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
417
418 /* currently FW API supports only one optional cipher scheme */
419 if (mvm->fw->cs[0].cipher) {
420 mvm->hw->n_cipher_schemes = 1;
421 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
422 }
423
424 #ifdef CONFIG_PM_SLEEP
425 if (iwl_mvm_is_d0i3_supported(mvm) &&
426 device_can_wakeup(mvm->trans->dev)) {
427 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
428 hw->wiphy->wowlan = &mvm->wowlan;
429 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
430 mvm->trans->ops->d3_suspend &&
431 mvm->trans->ops->d3_resume &&
432 device_can_wakeup(mvm->trans->dev)) {
433 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
434 WIPHY_WOWLAN_DISCONNECT |
435 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
436 WIPHY_WOWLAN_RFKILL_RELEASE;
437 if (!iwlwifi_mod_params.sw_crypto)
438 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
439 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
440 WIPHY_WOWLAN_4WAY_HANDSHAKE;
441
442 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
443 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
444 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
445 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
446 hw->wiphy->wowlan = &mvm->wowlan;
447 }
448 #endif
449
450 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
451 /* assign default bcast filtering configuration */
452 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
453 #endif
454
455 ret = iwl_mvm_leds_init(mvm);
456 if (ret)
457 return ret;
458
459 ret = ieee80211_register_hw(mvm->hw);
460 if (ret)
461 iwl_mvm_leds_exit(mvm);
462
463 return ret;
464 }
465
466 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
467 struct ieee80211_sta *sta,
468 struct sk_buff *skb)
469 {
470 struct iwl_mvm_sta *mvmsta;
471 bool defer = false;
472
473 /*
474 * double check the IN_D0I3 flag both before and after
475 * taking the spinlock, in order to prevent taking
476 * the spinlock when not needed.
477 */
478 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
479 return false;
480
481 spin_lock(&mvm->d0i3_tx_lock);
482 /*
483 * testing the flag again ensures the skb dequeue
484 * loop (on d0i3 exit) hasn't run yet.
485 */
486 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
487 goto out;
488
489 mvmsta = iwl_mvm_sta_from_mac80211(sta);
490 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
491 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
492 goto out;
493
494 __skb_queue_tail(&mvm->d0i3_tx, skb);
495 ieee80211_stop_queues(mvm->hw);
496
497 /* trigger wakeup */
498 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
499 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
500
501 defer = true;
502 out:
503 spin_unlock(&mvm->d0i3_tx_lock);
504 return defer;
505 }
506
507 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
508 struct ieee80211_tx_control *control,
509 struct sk_buff *skb)
510 {
511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
512 struct ieee80211_sta *sta = control->sta;
513 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
514 struct ieee80211_hdr *hdr = (void *)skb->data;
515
516 if (iwl_mvm_is_radio_killed(mvm)) {
517 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
518 goto drop;
519 }
520
521 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
522 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
523 goto drop;
524
525 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
526 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
527 ieee80211_is_mgmt(hdr->frame_control) &&
528 !ieee80211_is_deauth(hdr->frame_control) &&
529 !ieee80211_is_disassoc(hdr->frame_control) &&
530 !ieee80211_is_action(hdr->frame_control)))
531 sta = NULL;
532
533 if (sta) {
534 if (iwl_mvm_defer_tx(mvm, sta, skb))
535 return;
536 if (iwl_mvm_tx_skb(mvm, skb, sta))
537 goto drop;
538 return;
539 }
540
541 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
542 goto drop;
543 return;
544 drop:
545 ieee80211_free_txskb(hw, skb);
546 }
547
548 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
549 {
550 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
551 return false;
552 return true;
553 }
554
555 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
556 {
557 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
558 return false;
559 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
560 return true;
561
562 /* enabled by default */
563 return true;
564 }
565
566 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
567 struct ieee80211_vif *vif,
568 enum ieee80211_ampdu_mlme_action action,
569 struct ieee80211_sta *sta, u16 tid,
570 u16 *ssn, u8 buf_size)
571 {
572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
573 int ret;
574 bool tx_agg_ref = false;
575
576 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
577 sta->addr, tid, action);
578
579 if (!(mvm->nvm_data->sku_cap_11n_enable))
580 return -EACCES;
581
582 /* return from D0i3 before starting a new Tx aggregation */
583 switch (action) {
584 case IEEE80211_AMPDU_TX_START:
585 case IEEE80211_AMPDU_TX_STOP_CONT:
586 case IEEE80211_AMPDU_TX_STOP_FLUSH:
587 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
588 case IEEE80211_AMPDU_TX_OPERATIONAL:
589 /*
590 * for tx start, wait synchronously until D0i3 exit to
591 * get the correct sequence number for the tid.
592 * additionally, some other ampdu actions use direct
593 * target access, which is not handled automatically
594 * by the trans layer (unlike commands), so wait for
595 * d0i3 exit in these cases as well.
596 */
597 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
598 if (ret)
599 return ret;
600
601 tx_agg_ref = true;
602 break;
603 default:
604 break;
605 }
606
607 mutex_lock(&mvm->mutex);
608
609 switch (action) {
610 case IEEE80211_AMPDU_RX_START:
611 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
612 ret = -EINVAL;
613 break;
614 }
615 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
616 break;
617 case IEEE80211_AMPDU_RX_STOP:
618 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
619 break;
620 case IEEE80211_AMPDU_TX_START:
621 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
622 ret = -EINVAL;
623 break;
624 }
625 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
626 break;
627 case IEEE80211_AMPDU_TX_STOP_CONT:
628 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
629 break;
630 case IEEE80211_AMPDU_TX_STOP_FLUSH:
631 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
632 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
633 break;
634 case IEEE80211_AMPDU_TX_OPERATIONAL:
635 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
636 break;
637 default:
638 WARN_ON_ONCE(1);
639 ret = -EINVAL;
640 break;
641 }
642 mutex_unlock(&mvm->mutex);
643
644 /*
645 * If the tid is marked as started, we won't use it for offloaded
646 * traffic on the next D0i3 entry. It's safe to unref.
647 */
648 if (tx_agg_ref)
649 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
650
651 return ret;
652 }
653
654 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
655 struct ieee80211_vif *vif)
656 {
657 struct iwl_mvm *mvm = data;
658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
659
660 mvmvif->uploaded = false;
661 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
662
663 /* does this make sense at all? */
664 mvmvif->color++;
665
666 spin_lock_bh(&mvm->time_event_lock);
667 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
668 spin_unlock_bh(&mvm->time_event_lock);
669
670 mvmvif->phy_ctxt = NULL;
671 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
672 }
673
674 #ifdef CONFIG_IWLWIFI_DEBUGFS
675 static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
676 {
677 struct iwl_fw_error_dump_file *dump_file;
678 struct iwl_fw_error_dump_data *dump_data;
679 struct iwl_fw_error_dump_info *dump_info;
680 struct iwl_mvm_dump_ptrs *fw_error_dump;
681 const struct fw_img *img;
682 u32 sram_len, sram_ofs;
683 u32 file_len, rxf_len;
684 unsigned long flags;
685 int reg_val;
686
687 lockdep_assert_held(&mvm->mutex);
688
689 if (mvm->fw_error_dump)
690 return;
691
692 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
693 if (!fw_error_dump)
694 return;
695
696 img = &mvm->fw->img[mvm->cur_ucode];
697 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
698 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
699
700 /* reading buffer size */
701 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
702 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
703
704 /* the register holds the value divided by 128 */
705 rxf_len = rxf_len << 7;
706
707 file_len = sizeof(*dump_file) +
708 sizeof(*dump_data) * 3 +
709 sram_len +
710 rxf_len +
711 sizeof(*dump_info);
712
713 dump_file = vzalloc(file_len);
714 if (!dump_file) {
715 kfree(fw_error_dump);
716 return;
717 }
718
719 fw_error_dump->op_mode_ptr = dump_file;
720
721 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
722 dump_data = (void *)dump_file->data;
723
724 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
725 dump_data->len = cpu_to_le32(sizeof(*dump_info));
726 dump_info = (void *) dump_data->data;
727 dump_info->device_family =
728 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
729 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
730 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
731 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
732 sizeof(dump_info->fw_human_readable));
733 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
734 sizeof(dump_info->dev_human_readable));
735 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
736 sizeof(dump_info->bus_human_readable));
737
738 dump_data = iwl_fw_error_next_data(dump_data);
739 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
740 dump_data->len = cpu_to_le32(rxf_len);
741
742 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
743 u32 *rxf = (void *)dump_data->data;
744 int i;
745
746 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
747 iwl_trans_write_prph(mvm->trans,
748 RXF_LD_FENCE_OFFSET_ADDR,
749 i * sizeof(u32));
750 rxf[i] = iwl_trans_read_prph(mvm->trans,
751 RXF_FIFO_RD_FENCE_ADDR);
752 }
753 iwl_trans_release_nic_access(mvm->trans, &flags);
754 }
755
756 dump_data = iwl_fw_error_next_data(dump_data);
757 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
758 dump_data->len = cpu_to_le32(sram_len);
759 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
760 sram_len);
761
762 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
763 fw_error_dump->op_mode_len = file_len;
764 if (fw_error_dump->trans_ptr)
765 file_len += fw_error_dump->trans_ptr->len;
766 dump_file->file_len = cpu_to_le32(file_len);
767 mvm->fw_error_dump = fw_error_dump;
768 }
769 #endif
770
771 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
772 {
773 #ifdef CONFIG_IWLWIFI_DEBUGFS
774 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
775
776 iwl_mvm_fw_error_dump(mvm);
777
778 /* notify the userspace about the error we had */
779 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
780 #endif
781
782 iwl_trans_stop_device(mvm->trans);
783
784 mvm->scan_status = IWL_MVM_SCAN_NONE;
785
786 /* just in case one was running */
787 ieee80211_remain_on_channel_expired(mvm->hw);
788
789 ieee80211_iterate_active_interfaces_atomic(
790 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
791 iwl_mvm_cleanup_iterator, mvm);
792
793 mvm->p2p_device_vif = NULL;
794 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
795
796 iwl_mvm_reset_phy_ctxts(mvm);
797 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
798 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
799 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
800 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
801 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
802 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
803 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
804 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
805
806 ieee80211_wake_queues(mvm->hw);
807
808 /* cleanup all stale references (scan, roc), but keep the
809 * ucode_down ref until reconfig is complete */
810 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
811
812 mvm->vif_count = 0;
813 mvm->rx_ba_sessions = 0;
814 }
815
816 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
817 {
818 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
819 int ret;
820
821 mutex_lock(&mvm->mutex);
822
823 /* Clean up some internal and mac80211 state on restart */
824 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
825 iwl_mvm_restart_cleanup(mvm);
826
827 ret = iwl_mvm_up(mvm);
828
829 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
830 /* Something went wrong - we need to finish some cleanup
831 * that normally iwl_mvm_mac_restart_complete() below
832 * would do.
833 */
834 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
835 iwl_mvm_d0i3_enable_tx(mvm, NULL);
836 }
837
838 mutex_unlock(&mvm->mutex);
839
840 return ret;
841 }
842
843 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
844 {
845 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
846 int ret;
847
848 mutex_lock(&mvm->mutex);
849
850 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
851 iwl_mvm_d0i3_enable_tx(mvm, NULL);
852 ret = iwl_mvm_update_quotas(mvm, NULL);
853 if (ret)
854 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
855 ret);
856
857 /* allow transport/FW low power modes */
858 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
859
860 mutex_unlock(&mvm->mutex);
861 }
862
863 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
864 {
865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
866
867 flush_work(&mvm->d0i3_exit_work);
868 flush_work(&mvm->async_handlers_wk);
869
870 mutex_lock(&mvm->mutex);
871
872 /* disallow low power states when the FW is down */
873 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
874
875 /* async_handlers_wk is now blocked */
876
877 /*
878 * The work item could be running or queued if the
879 * ROC time event stops just as we get here.
880 */
881 cancel_work_sync(&mvm->roc_done_wk);
882
883 iwl_trans_stop_device(mvm->trans);
884
885 iwl_mvm_async_handlers_purge(mvm);
886 /* async_handlers_list is empty and will stay empty: HW is stopped */
887
888 /* the fw is stopped, the aux sta is dead: clean up driver state */
889 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
890
891 mutex_unlock(&mvm->mutex);
892
893 /*
894 * The worker might have been waiting for the mutex, let it run and
895 * discover that its list is now empty.
896 */
897 cancel_work_sync(&mvm->async_handlers_wk);
898 }
899
900 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
901 {
902 u16 i;
903
904 lockdep_assert_held(&mvm->mutex);
905
906 for (i = 0; i < NUM_PHY_CTX; i++)
907 if (!mvm->phy_ctxts[i].ref)
908 return &mvm->phy_ctxts[i];
909
910 IWL_ERR(mvm, "No available PHY context\n");
911 return NULL;
912 }
913
914 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
915 s8 tx_power)
916 {
917 /* FW is in charge of regulatory enforcement */
918 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
919 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
920 .pwr_restriction = cpu_to_le16(tx_power),
921 };
922
923 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
924 sizeof(reduce_txpwr_cmd),
925 &reduce_txpwr_cmd);
926 }
927
928 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
929 struct ieee80211_vif *vif)
930 {
931 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
932 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
933 int ret;
934
935 /*
936 * make sure D0i3 exit is completed, otherwise a target access
937 * during tx queue configuration could be done when still in
938 * D0i3 state.
939 */
940 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
941 if (ret)
942 return ret;
943
944 /*
945 * Not much to do here. The stack will not allow interface
946 * types or combinations that we didn't advertise, so we
947 * don't really have to check the types.
948 */
949
950 mutex_lock(&mvm->mutex);
951
952 /* Allocate resources for the MAC context, and add it to the fw */
953 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
954 if (ret)
955 goto out_unlock;
956
957 /* Counting number of interfaces is needed for legacy PM */
958 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
959 mvm->vif_count++;
960
961 /*
962 * The AP binding flow can be done only after the beacon
963 * template is configured (which happens only in the mac80211
964 * start_ap() flow), and adding the broadcast station can happen
965 * only after the binding.
966 * In addition, since modifying the MAC before adding a bcast
967 * station is not allowed by the FW, delay the adding of MAC context to
968 * the point where we can also add the bcast station.
969 * In short: there's not much we can do at this point, other than
970 * allocating resources :)
971 */
972 if (vif->type == NL80211_IFTYPE_AP ||
973 vif->type == NL80211_IFTYPE_ADHOC) {
974 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
975 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
976 qmask,
977 ieee80211_vif_type_p2p(vif));
978 if (ret) {
979 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
980 goto out_release;
981 }
982
983 iwl_mvm_vif_dbgfs_register(mvm, vif);
984 goto out_unlock;
985 }
986
987 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
988 if (ret)
989 goto out_release;
990
991 ret = iwl_mvm_power_update_mac(mvm);
992 if (ret)
993 goto out_release;
994
995 /* beacon filtering */
996 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
997 if (ret)
998 goto out_remove_mac;
999
1000 if (!mvm->bf_allowed_vif &&
1001 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1002 mvm->bf_allowed_vif = mvmvif;
1003 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1004 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1005 }
1006
1007 /*
1008 * P2P_DEVICE interface does not have a channel context assigned to it,
1009 * so a dedicated PHY context is allocated to it and the corresponding
1010 * MAC context is bound to it at this stage.
1011 */
1012 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1013
1014 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1015 if (!mvmvif->phy_ctxt) {
1016 ret = -ENOSPC;
1017 goto out_free_bf;
1018 }
1019
1020 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1021 ret = iwl_mvm_binding_add_vif(mvm, vif);
1022 if (ret)
1023 goto out_unref_phy;
1024
1025 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1026 if (ret)
1027 goto out_unbind;
1028
1029 /* Save a pointer to p2p device vif, so it can later be used to
1030 * update the p2p device MAC when a GO is started/stopped */
1031 mvm->p2p_device_vif = vif;
1032 }
1033
1034 iwl_mvm_vif_dbgfs_register(mvm, vif);
1035 goto out_unlock;
1036
1037 out_unbind:
1038 iwl_mvm_binding_remove_vif(mvm, vif);
1039 out_unref_phy:
1040 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1041 out_free_bf:
1042 if (mvm->bf_allowed_vif == mvmvif) {
1043 mvm->bf_allowed_vif = NULL;
1044 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1045 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1046 }
1047 out_remove_mac:
1048 mvmvif->phy_ctxt = NULL;
1049 iwl_mvm_mac_ctxt_remove(mvm, vif);
1050 out_release:
1051 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1052 mvm->vif_count--;
1053
1054 iwl_mvm_mac_ctxt_release(mvm, vif);
1055 out_unlock:
1056 mutex_unlock(&mvm->mutex);
1057
1058 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1059
1060 return ret;
1061 }
1062
1063 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1064 struct ieee80211_vif *vif)
1065 {
1066 u32 tfd_msk = 0, ac;
1067
1068 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1069 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1070 tfd_msk |= BIT(vif->hw_queue[ac]);
1071
1072 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1073 tfd_msk |= BIT(vif->cab_queue);
1074
1075 if (tfd_msk) {
1076 mutex_lock(&mvm->mutex);
1077 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1078 mutex_unlock(&mvm->mutex);
1079 }
1080
1081 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1082 /*
1083 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1084 * We assume here that all the packets sent to the OFFCHANNEL
1085 * queue are sent in ROC session.
1086 */
1087 flush_work(&mvm->roc_done_wk);
1088 } else {
1089 /*
1090 * By now, all the AC queues are empty. The AGG queues are
1091 * empty too. We already got all the Tx responses for all the
1092 * packets in the queues. The drain work can have been
1093 * triggered. Flush it.
1094 */
1095 flush_work(&mvm->sta_drained_wk);
1096 }
1097 }
1098
1099 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1100 struct ieee80211_vif *vif)
1101 {
1102 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1103 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1104
1105 iwl_mvm_prepare_mac_removal(mvm, vif);
1106
1107 mutex_lock(&mvm->mutex);
1108
1109 if (mvm->bf_allowed_vif == mvmvif) {
1110 mvm->bf_allowed_vif = NULL;
1111 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1112 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1113 }
1114
1115 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1116
1117 /*
1118 * For AP/GO interface, the tear down of the resources allocated to the
1119 * interface is be handled as part of the stop_ap flow.
1120 */
1121 if (vif->type == NL80211_IFTYPE_AP ||
1122 vif->type == NL80211_IFTYPE_ADHOC) {
1123 #ifdef CONFIG_NL80211_TESTMODE
1124 if (vif == mvm->noa_vif) {
1125 mvm->noa_vif = NULL;
1126 mvm->noa_duration = 0;
1127 }
1128 #endif
1129 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1130 goto out_release;
1131 }
1132
1133 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1134 mvm->p2p_device_vif = NULL;
1135 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1136 iwl_mvm_binding_remove_vif(mvm, vif);
1137 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1138 mvmvif->phy_ctxt = NULL;
1139 }
1140
1141 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1142 mvm->vif_count--;
1143
1144 iwl_mvm_power_update_mac(mvm);
1145 iwl_mvm_mac_ctxt_remove(mvm, vif);
1146
1147 out_release:
1148 iwl_mvm_mac_ctxt_release(mvm, vif);
1149 mutex_unlock(&mvm->mutex);
1150 }
1151
1152 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1153 {
1154 return 0;
1155 }
1156
1157 struct iwl_mvm_mc_iter_data {
1158 struct iwl_mvm *mvm;
1159 int port_id;
1160 };
1161
1162 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1163 struct ieee80211_vif *vif)
1164 {
1165 struct iwl_mvm_mc_iter_data *data = _data;
1166 struct iwl_mvm *mvm = data->mvm;
1167 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1168 int ret, len;
1169
1170 /* if we don't have free ports, mcast frames will be dropped */
1171 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1172 return;
1173
1174 if (vif->type != NL80211_IFTYPE_STATION ||
1175 !vif->bss_conf.assoc)
1176 return;
1177
1178 cmd->port_id = data->port_id++;
1179 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1180 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1181
1182 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1183 if (ret)
1184 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1185 }
1186
1187 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1188 {
1189 struct iwl_mvm_mc_iter_data iter_data = {
1190 .mvm = mvm,
1191 };
1192
1193 lockdep_assert_held(&mvm->mutex);
1194
1195 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1196 return;
1197
1198 ieee80211_iterate_active_interfaces_atomic(
1199 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1200 iwl_mvm_mc_iface_iterator, &iter_data);
1201 }
1202
1203 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1204 struct netdev_hw_addr_list *mc_list)
1205 {
1206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1207 struct iwl_mcast_filter_cmd *cmd;
1208 struct netdev_hw_addr *addr;
1209 int addr_count = netdev_hw_addr_list_count(mc_list);
1210 bool pass_all = false;
1211 int len;
1212
1213 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1214 pass_all = true;
1215 addr_count = 0;
1216 }
1217
1218 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1219 cmd = kzalloc(len, GFP_ATOMIC);
1220 if (!cmd)
1221 return 0;
1222
1223 if (pass_all) {
1224 cmd->pass_all = 1;
1225 return (u64)(unsigned long)cmd;
1226 }
1227
1228 netdev_hw_addr_list_for_each(addr, mc_list) {
1229 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1230 cmd->count, addr->addr);
1231 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1232 addr->addr, ETH_ALEN);
1233 cmd->count++;
1234 }
1235
1236 return (u64)(unsigned long)cmd;
1237 }
1238
1239 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1240 unsigned int changed_flags,
1241 unsigned int *total_flags,
1242 u64 multicast)
1243 {
1244 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1245 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1246
1247 mutex_lock(&mvm->mutex);
1248
1249 /* replace previous configuration */
1250 kfree(mvm->mcast_filter_cmd);
1251 mvm->mcast_filter_cmd = cmd;
1252
1253 if (!cmd)
1254 goto out;
1255
1256 iwl_mvm_recalc_multicast(mvm);
1257 out:
1258 mutex_unlock(&mvm->mutex);
1259 *total_flags = 0;
1260 }
1261
1262 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1263 struct iwl_bcast_iter_data {
1264 struct iwl_mvm *mvm;
1265 struct iwl_bcast_filter_cmd *cmd;
1266 u8 current_filter;
1267 };
1268
1269 static void
1270 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1271 const struct iwl_fw_bcast_filter *in_filter,
1272 struct iwl_fw_bcast_filter *out_filter)
1273 {
1274 struct iwl_fw_bcast_filter_attr *attr;
1275 int i;
1276
1277 memcpy(out_filter, in_filter, sizeof(*out_filter));
1278
1279 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1280 attr = &out_filter->attrs[i];
1281
1282 if (!attr->mask)
1283 break;
1284
1285 switch (attr->reserved1) {
1286 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1287 if (vif->bss_conf.arp_addr_cnt != 1) {
1288 attr->mask = 0;
1289 continue;
1290 }
1291
1292 attr->val = vif->bss_conf.arp_addr_list[0];
1293 break;
1294 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1295 attr->val = *(__be32 *)&vif->addr[2];
1296 break;
1297 default:
1298 break;
1299 }
1300 attr->reserved1 = 0;
1301 out_filter->num_attrs++;
1302 }
1303 }
1304
1305 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1306 struct ieee80211_vif *vif)
1307 {
1308 struct iwl_bcast_iter_data *data = _data;
1309 struct iwl_mvm *mvm = data->mvm;
1310 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1311 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1312 struct iwl_fw_bcast_mac *bcast_mac;
1313 int i;
1314
1315 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1316 return;
1317
1318 bcast_mac = &cmd->macs[mvmvif->id];
1319
1320 /*
1321 * enable filtering only for associated stations, but not for P2P
1322 * Clients
1323 */
1324 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1325 !vif->bss_conf.assoc)
1326 return;
1327
1328 bcast_mac->default_discard = 1;
1329
1330 /* copy all configured filters */
1331 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1332 /*
1333 * Make sure we don't exceed our filters limit.
1334 * if there is still a valid filter to be configured,
1335 * be on the safe side and just allow bcast for this mac.
1336 */
1337 if (WARN_ON_ONCE(data->current_filter >=
1338 ARRAY_SIZE(cmd->filters))) {
1339 bcast_mac->default_discard = 0;
1340 bcast_mac->attached_filters = 0;
1341 break;
1342 }
1343
1344 iwl_mvm_set_bcast_filter(vif,
1345 &mvm->bcast_filters[i],
1346 &cmd->filters[data->current_filter]);
1347
1348 /* skip current filter if it contains no attributes */
1349 if (!cmd->filters[data->current_filter].num_attrs)
1350 continue;
1351
1352 /* attach the filter to current mac */
1353 bcast_mac->attached_filters |=
1354 cpu_to_le16(BIT(data->current_filter));
1355
1356 data->current_filter++;
1357 }
1358 }
1359
1360 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1361 struct iwl_bcast_filter_cmd *cmd)
1362 {
1363 struct iwl_bcast_iter_data iter_data = {
1364 .mvm = mvm,
1365 .cmd = cmd,
1366 };
1367
1368 memset(cmd, 0, sizeof(*cmd));
1369 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1370 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1371
1372 #ifdef CONFIG_IWLWIFI_DEBUGFS
1373 /* use debugfs filters/macs if override is configured */
1374 if (mvm->dbgfs_bcast_filtering.override) {
1375 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1376 sizeof(cmd->filters));
1377 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1378 sizeof(cmd->macs));
1379 return true;
1380 }
1381 #endif
1382
1383 /* if no filters are configured, do nothing */
1384 if (!mvm->bcast_filters)
1385 return false;
1386
1387 /* configure and attach these filters for each associated sta vif */
1388 ieee80211_iterate_active_interfaces(
1389 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1390 iwl_mvm_bcast_filter_iterator, &iter_data);
1391
1392 return true;
1393 }
1394 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1395 struct ieee80211_vif *vif)
1396 {
1397 struct iwl_bcast_filter_cmd cmd;
1398
1399 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1400 return 0;
1401
1402 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1403 return 0;
1404
1405 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1406 sizeof(cmd), &cmd);
1407 }
1408 #else
1409 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1410 struct ieee80211_vif *vif)
1411 {
1412 return 0;
1413 }
1414 #endif
1415
1416 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1417 struct ieee80211_vif *vif,
1418 struct ieee80211_bss_conf *bss_conf,
1419 u32 changes)
1420 {
1421 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1422 int ret;
1423
1424 /*
1425 * Re-calculate the tsf id, as the master-slave relations depend on the
1426 * beacon interval, which was not known when the station interface was
1427 * added.
1428 */
1429 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1430 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1431
1432 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
1433 if (ret)
1434 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1435
1436 if (changes & BSS_CHANGED_ASSOC) {
1437 if (bss_conf->assoc) {
1438 /* add quota for this interface */
1439 ret = iwl_mvm_update_quotas(mvm, NULL);
1440 if (ret) {
1441 IWL_ERR(mvm, "failed to update quotas\n");
1442 return;
1443 }
1444
1445 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1446 &mvm->status)) {
1447 /*
1448 * If we're restarting then the firmware will
1449 * obviously have lost synchronisation with
1450 * the AP. It will attempt to synchronise by
1451 * itself, but we can make it more reliable by
1452 * scheduling a session protection time event.
1453 *
1454 * The firmware needs to receive a beacon to
1455 * catch up with synchronisation, use 110% of
1456 * the beacon interval.
1457 *
1458 * Set a large maximum delay to allow for more
1459 * than a single interface.
1460 */
1461 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1462 iwl_mvm_protect_session(mvm, vif, dur, dur,
1463 5 * dur);
1464 }
1465
1466 iwl_mvm_sf_update(mvm, vif, false);
1467 iwl_mvm_power_vif_assoc(mvm, vif);
1468 if (vif->p2p)
1469 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1470 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1471 /*
1472 * If update fails - SF might be running in associated
1473 * mode while disassociated - which is forbidden.
1474 */
1475 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1476 "Failed to update SF upon disassociation\n");
1477
1478 /* remove AP station now that the MAC is unassoc */
1479 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1480 if (ret)
1481 IWL_ERR(mvm, "failed to remove AP station\n");
1482
1483 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1484 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1485 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1486 /* remove quota for this interface */
1487 ret = iwl_mvm_update_quotas(mvm, NULL);
1488 if (ret)
1489 IWL_ERR(mvm, "failed to update quotas\n");
1490
1491 if (vif->p2p)
1492 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1493 }
1494
1495 iwl_mvm_recalc_multicast(mvm);
1496 iwl_mvm_configure_bcast_filter(mvm, vif);
1497
1498 /* reset rssi values */
1499 mvmvif->bf_data.ave_beacon_signal = 0;
1500
1501 iwl_mvm_bt_coex_vif_change(mvm);
1502 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1503 IEEE80211_SMPS_AUTOMATIC);
1504 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1505 /*
1506 * We received a beacon _after_ association so
1507 * remove the session protection.
1508 */
1509 iwl_mvm_remove_time_event(mvm, mvmvif,
1510 &mvmvif->time_event_data);
1511 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1512 BSS_CHANGED_QOS)) {
1513 ret = iwl_mvm_power_update_mac(mvm);
1514 if (ret)
1515 IWL_ERR(mvm, "failed to update power mode\n");
1516 }
1517
1518 if (changes & BSS_CHANGED_BEACON_INFO) {
1519 iwl_mvm_sf_update(mvm, vif, false);
1520 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1521 }
1522
1523 if (changes & BSS_CHANGED_TXPOWER) {
1524 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1525 bss_conf->txpower);
1526 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1527 }
1528
1529 if (changes & BSS_CHANGED_CQM) {
1530 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1531 /* reset cqm events tracking */
1532 mvmvif->bf_data.last_cqm_event = 0;
1533 if (mvmvif->bf_data.bf_enabled) {
1534 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1535 if (ret)
1536 IWL_ERR(mvm,
1537 "failed to update CQM thresholds\n");
1538 }
1539 }
1540
1541 if (changes & BSS_CHANGED_ARP_FILTER) {
1542 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1543 iwl_mvm_configure_bcast_filter(mvm, vif);
1544 }
1545 }
1546
1547 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1548 struct ieee80211_vif *vif)
1549 {
1550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1551 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1552 int ret;
1553
1554 /*
1555 * iwl_mvm_mac_ctxt_add() might read directly from the device
1556 * (the system time), so make sure it is available.
1557 */
1558 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1559 if (ret)
1560 return ret;
1561
1562 mutex_lock(&mvm->mutex);
1563
1564 /* Send the beacon template */
1565 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1566 if (ret)
1567 goto out_unlock;
1568
1569 /*
1570 * Re-calculate the tsf id, as the master-slave relations depend on the
1571 * beacon interval, which was not known when the AP interface was added.
1572 */
1573 if (vif->type == NL80211_IFTYPE_AP)
1574 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1575
1576 /* Add the mac context */
1577 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1578 if (ret)
1579 goto out_unlock;
1580
1581 /* Perform the binding */
1582 ret = iwl_mvm_binding_add_vif(mvm, vif);
1583 if (ret)
1584 goto out_remove;
1585
1586 /* Send the bcast station. At this stage the TBTT and DTIM time events
1587 * are added and applied to the scheduler */
1588 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1589 if (ret)
1590 goto out_unbind;
1591
1592 /* must be set before quota calculations */
1593 mvmvif->ap_ibss_active = true;
1594
1595 /* power updated needs to be done before quotas */
1596 iwl_mvm_power_update_mac(mvm);
1597
1598 ret = iwl_mvm_update_quotas(mvm, NULL);
1599 if (ret)
1600 goto out_quota_failed;
1601
1602 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1603 if (vif->p2p && mvm->p2p_device_vif)
1604 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1605
1606 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1607
1608 iwl_mvm_bt_coex_vif_change(mvm);
1609
1610 mutex_unlock(&mvm->mutex);
1611 return 0;
1612
1613 out_quota_failed:
1614 iwl_mvm_power_update_mac(mvm);
1615 mvmvif->ap_ibss_active = false;
1616 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1617 out_unbind:
1618 iwl_mvm_binding_remove_vif(mvm, vif);
1619 out_remove:
1620 iwl_mvm_mac_ctxt_remove(mvm, vif);
1621 out_unlock:
1622 mutex_unlock(&mvm->mutex);
1623 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1624 return ret;
1625 }
1626
1627 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1628 struct ieee80211_vif *vif)
1629 {
1630 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1631 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1632
1633 iwl_mvm_prepare_mac_removal(mvm, vif);
1634
1635 mutex_lock(&mvm->mutex);
1636
1637 /* Handle AP stop while in CSA */
1638 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1639 iwl_mvm_remove_time_event(mvm, mvmvif,
1640 &mvmvif->time_event_data);
1641 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1642 }
1643
1644 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1645 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1646 mvm->csa_tx_block_bcn_timeout = 0;
1647 }
1648
1649 mvmvif->ap_ibss_active = false;
1650 mvm->ap_last_beacon_gp2 = 0;
1651
1652 iwl_mvm_bt_coex_vif_change(mvm);
1653
1654 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1655
1656 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1657 if (vif->p2p && mvm->p2p_device_vif)
1658 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1659
1660 iwl_mvm_update_quotas(mvm, NULL);
1661 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1662 iwl_mvm_binding_remove_vif(mvm, vif);
1663
1664 iwl_mvm_power_update_mac(mvm);
1665
1666 iwl_mvm_mac_ctxt_remove(mvm, vif);
1667
1668 mutex_unlock(&mvm->mutex);
1669 }
1670
1671 static void
1672 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1673 struct ieee80211_vif *vif,
1674 struct ieee80211_bss_conf *bss_conf,
1675 u32 changes)
1676 {
1677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1678
1679 /* Changes will be applied when the AP/IBSS is started */
1680 if (!mvmvif->ap_ibss_active)
1681 return;
1682
1683 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1684 BSS_CHANGED_BANDWIDTH) &&
1685 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
1686 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1687
1688 /* Need to send a new beacon template to the FW */
1689 if (changes & BSS_CHANGED_BEACON &&
1690 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1691 IWL_WARN(mvm, "Failed updating beacon data\n");
1692 }
1693
1694 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1695 struct ieee80211_vif *vif,
1696 struct ieee80211_bss_conf *bss_conf,
1697 u32 changes)
1698 {
1699 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1700
1701 /*
1702 * iwl_mvm_bss_info_changed_station() might call
1703 * iwl_mvm_protect_session(), which reads directly from
1704 * the device (the system time), so make sure it is available.
1705 */
1706 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1707 return;
1708
1709 mutex_lock(&mvm->mutex);
1710
1711 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1712 iwl_mvm_scan_offload_stop(mvm, true);
1713
1714 switch (vif->type) {
1715 case NL80211_IFTYPE_STATION:
1716 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1717 break;
1718 case NL80211_IFTYPE_AP:
1719 case NL80211_IFTYPE_ADHOC:
1720 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1721 break;
1722 default:
1723 /* shouldn't happen */
1724 WARN_ON_ONCE(1);
1725 }
1726
1727 mutex_unlock(&mvm->mutex);
1728 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1729 }
1730
1731 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1732 enum iwl_scan_status scan_type)
1733 {
1734 int ret;
1735 bool wait_for_handlers = false;
1736
1737 mutex_lock(&mvm->mutex);
1738
1739 if (mvm->scan_status != scan_type) {
1740 ret = 0;
1741 /* make sure there are no pending notifications */
1742 wait_for_handlers = true;
1743 goto out;
1744 }
1745
1746 switch (scan_type) {
1747 case IWL_MVM_SCAN_SCHED:
1748 ret = iwl_mvm_scan_offload_stop(mvm, true);
1749 break;
1750 case IWL_MVM_SCAN_OS:
1751 ret = iwl_mvm_cancel_scan(mvm);
1752 break;
1753 case IWL_MVM_SCAN_NONE:
1754 default:
1755 WARN_ON_ONCE(1);
1756 ret = -EINVAL;
1757 break;
1758 }
1759 if (ret)
1760 goto out;
1761
1762 wait_for_handlers = true;
1763 out:
1764 mutex_unlock(&mvm->mutex);
1765
1766 /* make sure we consume the completion notification */
1767 if (wait_for_handlers)
1768 iwl_mvm_wait_for_async_handlers(mvm);
1769
1770 return ret;
1771 }
1772 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1773 struct ieee80211_vif *vif,
1774 struct ieee80211_scan_request *hw_req)
1775 {
1776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1777 struct cfg80211_scan_request *req = &hw_req->req;
1778 int ret;
1779
1780 if (req->n_channels == 0 ||
1781 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1782 return -EINVAL;
1783
1784 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1785 if (ret)
1786 return ret;
1787
1788 mutex_lock(&mvm->mutex);
1789
1790 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1791 ret = -EBUSY;
1792 goto out;
1793 }
1794
1795 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1796
1797 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1798 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1799 else
1800 ret = iwl_mvm_scan_request(mvm, vif, req);
1801
1802 if (ret)
1803 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1804 out:
1805 mutex_unlock(&mvm->mutex);
1806 return ret;
1807 }
1808
1809 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1810 struct ieee80211_vif *vif)
1811 {
1812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1813
1814 mutex_lock(&mvm->mutex);
1815
1816 iwl_mvm_cancel_scan(mvm);
1817
1818 mutex_unlock(&mvm->mutex);
1819 }
1820
1821 static void
1822 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1823 struct ieee80211_sta *sta, u16 tids,
1824 int num_frames,
1825 enum ieee80211_frame_release_type reason,
1826 bool more_data)
1827 {
1828 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1829
1830 /* Called when we need to transmit (a) frame(s) from mac80211 */
1831
1832 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1833 tids, more_data, false);
1834 }
1835
1836 static void
1837 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1838 struct ieee80211_sta *sta, u16 tids,
1839 int num_frames,
1840 enum ieee80211_frame_release_type reason,
1841 bool more_data)
1842 {
1843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1844
1845 /* Called when we need to transmit (a) frame(s) from agg queue */
1846
1847 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1848 tids, more_data, true);
1849 }
1850
1851 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1852 struct ieee80211_vif *vif,
1853 enum sta_notify_cmd cmd,
1854 struct ieee80211_sta *sta)
1855 {
1856 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1857 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1858 int tid;
1859
1860 switch (cmd) {
1861 case STA_NOTIFY_SLEEP:
1862 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1863 ieee80211_sta_block_awake(hw, sta, true);
1864 spin_lock_bh(&mvmsta->lock);
1865 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1866 struct iwl_mvm_tid_data *tid_data;
1867
1868 tid_data = &mvmsta->tid_data[tid];
1869 if (tid_data->state != IWL_AGG_ON &&
1870 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1871 continue;
1872 if (iwl_mvm_tid_queued(tid_data) == 0)
1873 continue;
1874 ieee80211_sta_set_buffered(sta, tid, true);
1875 }
1876 spin_unlock_bh(&mvmsta->lock);
1877 /*
1878 * The fw updates the STA to be asleep. Tx packets on the Tx
1879 * queues to this station will not be transmitted. The fw will
1880 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1881 */
1882 break;
1883 case STA_NOTIFY_AWAKE:
1884 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1885 break;
1886 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1887 break;
1888 default:
1889 break;
1890 }
1891 }
1892
1893 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1894 struct ieee80211_vif *vif,
1895 struct ieee80211_sta *sta)
1896 {
1897 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1898 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1899
1900 /*
1901 * This is called before mac80211 does RCU synchronisation,
1902 * so here we already invalidate our internal RCU-protected
1903 * station pointer. The rest of the code will thus no longer
1904 * be able to find the station this way, and we don't rely
1905 * on further RCU synchronisation after the sta_state()
1906 * callback deleted the station.
1907 */
1908 mutex_lock(&mvm->mutex);
1909 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1910 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1911 ERR_PTR(-ENOENT));
1912 mutex_unlock(&mvm->mutex);
1913 }
1914
1915 int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1916 {
1917 struct ieee80211_sta *sta;
1918 struct iwl_mvm_sta *mvmsta;
1919 int count = 0;
1920 int i;
1921
1922 lockdep_assert_held(&mvm->mutex);
1923
1924 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1925 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1926 lockdep_is_held(&mvm->mutex));
1927 if (!sta || IS_ERR(sta) || !sta->tdls)
1928 continue;
1929
1930 if (vif) {
1931 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1932 if (mvmsta->vif != vif)
1933 continue;
1934 }
1935
1936 count++;
1937 }
1938
1939 return count;
1940 }
1941
1942 static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1943 struct ieee80211_vif *vif,
1944 bool sta_added)
1945 {
1946 int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1947
1948 /*
1949 * Disable ps when the first TDLS sta is added and re-enable it
1950 * when the last TDLS sta is removed
1951 */
1952 if ((tdls_sta_cnt == 1 && sta_added) ||
1953 (tdls_sta_cnt == 0 && !sta_added))
1954 iwl_mvm_power_update_mac(mvm);
1955 }
1956
1957 static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1958 {
1959 struct ieee80211_sta *sta;
1960 struct iwl_mvm_sta *mvmsta;
1961 int i;
1962
1963 lockdep_assert_held(&mvm->mutex);
1964
1965 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1966 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1967 lockdep_is_held(&mvm->mutex));
1968 if (!sta || IS_ERR(sta) || !sta->tdls)
1969 continue;
1970
1971 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1972 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1973 NL80211_TDLS_TEARDOWN,
1974 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1975 GFP_KERNEL);
1976 }
1977 }
1978
1979 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1980 struct ieee80211_vif *vif,
1981 struct ieee80211_sta *sta,
1982 enum ieee80211_sta_state old_state,
1983 enum ieee80211_sta_state new_state)
1984 {
1985 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1986 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1987 int ret;
1988
1989 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1990 sta->addr, old_state, new_state);
1991
1992 /* this would be a mac80211 bug ... but don't crash */
1993 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1994 return -EINVAL;
1995
1996 /* if a STA is being removed, reuse its ID */
1997 flush_work(&mvm->sta_drained_wk);
1998
1999 mutex_lock(&mvm->mutex);
2000 if (old_state == IEEE80211_STA_NOTEXIST &&
2001 new_state == IEEE80211_STA_NONE) {
2002 /*
2003 * Firmware bug - it'll crash if the beacon interval is less
2004 * than 16. We can't avoid connecting at all, so refuse the
2005 * station state change, this will cause mac80211 to abandon
2006 * attempts to connect to this AP, and eventually wpa_s will
2007 * blacklist the AP...
2008 */
2009 if (vif->type == NL80211_IFTYPE_STATION &&
2010 vif->bss_conf.beacon_int < 16) {
2011 IWL_ERR(mvm,
2012 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2013 sta->addr, vif->bss_conf.beacon_int);
2014 ret = -EINVAL;
2015 goto out_unlock;
2016 }
2017
2018 if (sta->tdls &&
2019 (vif->p2p ||
2020 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2021 IWL_MVM_TDLS_STA_COUNT ||
2022 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2023 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2024 ret = -EBUSY;
2025 goto out_unlock;
2026 }
2027
2028 ret = iwl_mvm_add_sta(mvm, vif, sta);
2029 if (sta->tdls && ret == 0)
2030 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2031 } else if (old_state == IEEE80211_STA_NONE &&
2032 new_state == IEEE80211_STA_AUTH) {
2033 /*
2034 * EBS may be disabled due to previous failures reported by FW.
2035 * Reset EBS status here assuming environment has been changed.
2036 */
2037 mvm->last_ebs_successful = true;
2038 ret = 0;
2039 } else if (old_state == IEEE80211_STA_AUTH &&
2040 new_state == IEEE80211_STA_ASSOC) {
2041 ret = iwl_mvm_update_sta(mvm, vif, sta);
2042 if (ret == 0)
2043 iwl_mvm_rs_rate_init(mvm, sta,
2044 mvmvif->phy_ctxt->channel->band,
2045 true);
2046 } else if (old_state == IEEE80211_STA_ASSOC &&
2047 new_state == IEEE80211_STA_AUTHORIZED) {
2048
2049 /* we don't support TDLS during DCM */
2050 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2051 iwl_mvm_teardown_tdls_peers(mvm);
2052
2053 /* enable beacon filtering */
2054 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2055 ret = 0;
2056 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2057 new_state == IEEE80211_STA_ASSOC) {
2058 /* disable beacon filtering */
2059 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2060 ret = 0;
2061 } else if (old_state == IEEE80211_STA_ASSOC &&
2062 new_state == IEEE80211_STA_AUTH) {
2063 ret = 0;
2064 } else if (old_state == IEEE80211_STA_AUTH &&
2065 new_state == IEEE80211_STA_NONE) {
2066 ret = 0;
2067 } else if (old_state == IEEE80211_STA_NONE &&
2068 new_state == IEEE80211_STA_NOTEXIST) {
2069 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2070 if (sta->tdls)
2071 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2072 } else {
2073 ret = -EIO;
2074 }
2075 out_unlock:
2076 mutex_unlock(&mvm->mutex);
2077
2078 return ret;
2079 }
2080
2081 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2082 {
2083 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2084
2085 mvm->rts_threshold = value;
2086
2087 return 0;
2088 }
2089
2090 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2091 struct ieee80211_vif *vif,
2092 struct ieee80211_sta *sta, u32 changed)
2093 {
2094 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2095
2096 if (vif->type == NL80211_IFTYPE_STATION &&
2097 changed & IEEE80211_RC_NSS_CHANGED)
2098 iwl_mvm_sf_update(mvm, vif, false);
2099 }
2100
2101 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2102 struct ieee80211_vif *vif, u16 ac,
2103 const struct ieee80211_tx_queue_params *params)
2104 {
2105 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2106 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2107
2108 mvmvif->queue_params[ac] = *params;
2109
2110 /*
2111 * No need to update right away, we'll get BSS_CHANGED_QOS
2112 * The exception is P2P_DEVICE interface which needs immediate update.
2113 */
2114 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2115 int ret;
2116
2117 mutex_lock(&mvm->mutex);
2118 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2119 mutex_unlock(&mvm->mutex);
2120 return ret;
2121 }
2122 return 0;
2123 }
2124
2125 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2126 struct ieee80211_vif *vif)
2127 {
2128 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2129 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2130 200 + vif->bss_conf.beacon_int);
2131 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2132 100 + vif->bss_conf.beacon_int);
2133
2134 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2135 return;
2136
2137 /*
2138 * iwl_mvm_protect_session() reads directly from the device
2139 * (the system time), so make sure it is available.
2140 */
2141 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2142 return;
2143
2144 mutex_lock(&mvm->mutex);
2145 /* Try really hard to protect the session and hear a beacon */
2146 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
2147 mutex_unlock(&mvm->mutex);
2148
2149 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2150 }
2151
2152 static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2153 struct ieee80211_vif *vif)
2154 {
2155 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2156 u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2157
2158 /*
2159 * iwl_mvm_protect_session() reads directly from the device
2160 * (the system time), so make sure it is available.
2161 */
2162 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS))
2163 return;
2164
2165 mutex_lock(&mvm->mutex);
2166 /* Protect the session to hear the TDLS setup response on the channel */
2167 iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2168 mutex_unlock(&mvm->mutex);
2169
2170 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS);
2171 }
2172
2173 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2174 struct ieee80211_vif *vif,
2175 struct cfg80211_sched_scan_request *req,
2176 struct ieee80211_scan_ies *ies)
2177 {
2178 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2179 int ret;
2180
2181 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2182 if (ret)
2183 return ret;
2184
2185 mutex_lock(&mvm->mutex);
2186
2187 if (!iwl_mvm_is_idle(mvm)) {
2188 ret = -EBUSY;
2189 goto out;
2190 }
2191
2192 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2193 ret = -EBUSY;
2194 goto out;
2195 }
2196
2197 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2198
2199 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2200 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2201 if (ret)
2202 goto err;
2203 }
2204
2205 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2206 if (ret)
2207 goto err;
2208
2209 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2210 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2211 else
2212 ret = iwl_mvm_sched_scan_start(mvm, req);
2213
2214 if (!ret)
2215 goto out;
2216 err:
2217 mvm->scan_status = IWL_MVM_SCAN_NONE;
2218 out:
2219 mutex_unlock(&mvm->mutex);
2220 return ret;
2221 }
2222
2223 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2224 struct ieee80211_vif *vif)
2225 {
2226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2227 int ret;
2228
2229 mutex_lock(&mvm->mutex);
2230 ret = iwl_mvm_scan_offload_stop(mvm, false);
2231 mutex_unlock(&mvm->mutex);
2232 iwl_mvm_wait_for_async_handlers(mvm);
2233
2234 return ret;
2235 }
2236
2237 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2238 enum set_key_cmd cmd,
2239 struct ieee80211_vif *vif,
2240 struct ieee80211_sta *sta,
2241 struct ieee80211_key_conf *key)
2242 {
2243 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2244 int ret;
2245
2246 if (iwlwifi_mod_params.sw_crypto) {
2247 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2248 return -EOPNOTSUPP;
2249 }
2250
2251 switch (key->cipher) {
2252 case WLAN_CIPHER_SUITE_TKIP:
2253 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2254 /* fall-through */
2255 case WLAN_CIPHER_SUITE_CCMP:
2256 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2257 break;
2258 case WLAN_CIPHER_SUITE_AES_CMAC:
2259 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2260 break;
2261 case WLAN_CIPHER_SUITE_WEP40:
2262 case WLAN_CIPHER_SUITE_WEP104:
2263 /*
2264 * Support for TX only, at least for now, so accept
2265 * the key and do nothing else. Then mac80211 will
2266 * pass it for TX but we don't have to use it for RX.
2267 */
2268 return 0;
2269 default:
2270 /* currently FW supports only one optional cipher scheme */
2271 if (hw->n_cipher_schemes &&
2272 hw->cipher_schemes->cipher == key->cipher)
2273 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2274 else
2275 return -EOPNOTSUPP;
2276 }
2277
2278 mutex_lock(&mvm->mutex);
2279
2280 switch (cmd) {
2281 case SET_KEY:
2282 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2283 vif->type == NL80211_IFTYPE_AP) && !sta) {
2284 /*
2285 * GTK on AP interface is a TX-only key, return 0;
2286 * on IBSS they're per-station and because we're lazy
2287 * we don't support them for RX, so do the same.
2288 */
2289 ret = 0;
2290 key->hw_key_idx = STA_KEY_IDX_INVALID;
2291 break;
2292 }
2293
2294 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2295 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2296 if (ret) {
2297 IWL_WARN(mvm, "set key failed\n");
2298 /*
2299 * can't add key for RX, but we don't need it
2300 * in the device for TX so still return 0
2301 */
2302 key->hw_key_idx = STA_KEY_IDX_INVALID;
2303 ret = 0;
2304 }
2305
2306 break;
2307 case DISABLE_KEY:
2308 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2309 ret = 0;
2310 break;
2311 }
2312
2313 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2314 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2315 break;
2316 default:
2317 ret = -EINVAL;
2318 }
2319
2320 mutex_unlock(&mvm->mutex);
2321 return ret;
2322 }
2323
2324 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2325 struct ieee80211_vif *vif,
2326 struct ieee80211_key_conf *keyconf,
2327 struct ieee80211_sta *sta,
2328 u32 iv32, u16 *phase1key)
2329 {
2330 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2331
2332 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2333 return;
2334
2335 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2336 }
2337
2338
2339 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2340 struct iwl_rx_packet *pkt, void *data)
2341 {
2342 struct iwl_mvm *mvm =
2343 container_of(notif_wait, struct iwl_mvm, notif_wait);
2344 struct iwl_hs20_roc_res *resp;
2345 int resp_len = iwl_rx_packet_payload_len(pkt);
2346 struct iwl_mvm_time_event_data *te_data = data;
2347
2348 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2349 return true;
2350
2351 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2352 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2353 return true;
2354 }
2355
2356 resp = (void *)pkt->data;
2357
2358 IWL_DEBUG_TE(mvm,
2359 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2360 resp->status, resp->event_unique_id);
2361
2362 te_data->uid = le32_to_cpu(resp->event_unique_id);
2363 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2364 te_data->uid);
2365
2366 spin_lock_bh(&mvm->time_event_lock);
2367 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2368 spin_unlock_bh(&mvm->time_event_lock);
2369
2370 return true;
2371 }
2372
2373 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2374 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2375 struct ieee80211_channel *channel,
2376 struct ieee80211_vif *vif,
2377 int duration)
2378 {
2379 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2380 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2381 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2382 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2383 struct iwl_notification_wait wait_time_event;
2384 struct iwl_hs20_roc_req aux_roc_req = {
2385 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2386 .id_and_color =
2387 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2388 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2389 /* Set the channel info data */
2390 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2391 PHY_BAND_24 : PHY_BAND_5,
2392 .channel_info.channel = channel->hw_value,
2393 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2394 /* Set the time and duration */
2395 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2396 .apply_time_max_delay =
2397 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2398 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2399 };
2400
2401 /* Set the node address */
2402 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2403
2404 te_data->vif = vif;
2405 te_data->duration = duration;
2406 te_data->id = HOT_SPOT_CMD;
2407
2408 lockdep_assert_held(&mvm->mutex);
2409
2410 spin_lock_bh(&mvm->time_event_lock);
2411 list_add_tail(&te_data->list, &mvm->time_event_list);
2412 spin_unlock_bh(&mvm->time_event_lock);
2413
2414 /*
2415 * Use a notification wait, which really just processes the
2416 * command response and doesn't wait for anything, in order
2417 * to be able to process the response and get the UID inside
2418 * the RX path. Using CMD_WANT_SKB doesn't work because it
2419 * stores the buffer and then wakes up this thread, by which
2420 * time another notification (that the time event started)
2421 * might already be processed unsuccessfully.
2422 */
2423 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2424 time_event_response,
2425 ARRAY_SIZE(time_event_response),
2426 iwl_mvm_rx_aux_roc, te_data);
2427
2428 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2429 &aux_roc_req);
2430
2431 if (res) {
2432 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2433 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2434 goto out_clear_te;
2435 }
2436
2437 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2438 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2439 /* should never fail */
2440 WARN_ON_ONCE(res);
2441
2442 if (res) {
2443 out_clear_te:
2444 spin_lock_bh(&mvm->time_event_lock);
2445 iwl_mvm_te_clear_data(mvm, te_data);
2446 spin_unlock_bh(&mvm->time_event_lock);
2447 }
2448
2449 return res;
2450 }
2451
2452 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2453 struct ieee80211_vif *vif,
2454 struct ieee80211_channel *channel,
2455 int duration,
2456 enum ieee80211_roc_type type)
2457 {
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2460 struct cfg80211_chan_def chandef;
2461 struct iwl_mvm_phy_ctxt *phy_ctxt;
2462 int ret, i;
2463
2464 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2465 duration, type);
2466
2467 switch (vif->type) {
2468 case NL80211_IFTYPE_STATION:
2469 /* Use aux roc framework (HS20) */
2470 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2471 vif, duration);
2472 return ret;
2473 case NL80211_IFTYPE_P2P_DEVICE:
2474 /* handle below */
2475 break;
2476 default:
2477 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2478 return -EINVAL;
2479 }
2480
2481 mutex_lock(&mvm->mutex);
2482
2483 for (i = 0; i < NUM_PHY_CTX; i++) {
2484 phy_ctxt = &mvm->phy_ctxts[i];
2485 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2486 continue;
2487
2488 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2489 /*
2490 * Unbind the P2P_DEVICE from the current PHY context,
2491 * and if the PHY context is not used remove it.
2492 */
2493 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2494 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2495 goto out_unlock;
2496
2497 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2498
2499 /* Bind the P2P_DEVICE to the current PHY Context */
2500 mvmvif->phy_ctxt = phy_ctxt;
2501
2502 ret = iwl_mvm_binding_add_vif(mvm, vif);
2503 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2504 goto out_unlock;
2505
2506 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2507 goto schedule_time_event;
2508 }
2509 }
2510
2511 /* Need to update the PHY context only if the ROC channel changed */
2512 if (channel == mvmvif->phy_ctxt->channel)
2513 goto schedule_time_event;
2514
2515 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2516
2517 /*
2518 * Change the PHY context configuration as it is currently referenced
2519 * only by the P2P Device MAC
2520 */
2521 if (mvmvif->phy_ctxt->ref == 1) {
2522 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2523 &chandef, 1, 1);
2524 if (ret)
2525 goto out_unlock;
2526 } else {
2527 /*
2528 * The PHY context is shared with other MACs. Need to remove the
2529 * P2P Device from the binding, allocate an new PHY context and
2530 * create a new binding
2531 */
2532 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2533 if (!phy_ctxt) {
2534 ret = -ENOSPC;
2535 goto out_unlock;
2536 }
2537
2538 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2539 1, 1);
2540 if (ret) {
2541 IWL_ERR(mvm, "Failed to change PHY context\n");
2542 goto out_unlock;
2543 }
2544
2545 /* Unbind the P2P_DEVICE from the current PHY context */
2546 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2547 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2548 goto out_unlock;
2549
2550 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2551
2552 /* Bind the P2P_DEVICE to the new allocated PHY context */
2553 mvmvif->phy_ctxt = phy_ctxt;
2554
2555 ret = iwl_mvm_binding_add_vif(mvm, vif);
2556 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2557 goto out_unlock;
2558
2559 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2560 }
2561
2562 schedule_time_event:
2563 /* Schedule the time events */
2564 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2565
2566 out_unlock:
2567 mutex_unlock(&mvm->mutex);
2568 IWL_DEBUG_MAC80211(mvm, "leave\n");
2569 return ret;
2570 }
2571
2572 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2573 {
2574 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575
2576 IWL_DEBUG_MAC80211(mvm, "enter\n");
2577
2578 mutex_lock(&mvm->mutex);
2579 iwl_mvm_stop_p2p_roc(mvm);
2580 mutex_unlock(&mvm->mutex);
2581
2582 IWL_DEBUG_MAC80211(mvm, "leave\n");
2583 return 0;
2584 }
2585
2586 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2587 struct ieee80211_chanctx_conf *ctx)
2588 {
2589 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2590 struct iwl_mvm_phy_ctxt *phy_ctxt;
2591 int ret;
2592
2593 lockdep_assert_held(&mvm->mutex);
2594
2595 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2596
2597 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2598 if (!phy_ctxt) {
2599 ret = -ENOSPC;
2600 goto out;
2601 }
2602
2603 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2604 ctx->rx_chains_static,
2605 ctx->rx_chains_dynamic);
2606 if (ret) {
2607 IWL_ERR(mvm, "Failed to add PHY context\n");
2608 goto out;
2609 }
2610
2611 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2612 *phy_ctxt_id = phy_ctxt->id;
2613 out:
2614 return ret;
2615 }
2616
2617 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2618 struct ieee80211_chanctx_conf *ctx)
2619 {
2620 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2621 int ret;
2622
2623 mutex_lock(&mvm->mutex);
2624 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2625 mutex_unlock(&mvm->mutex);
2626
2627 return ret;
2628 }
2629
2630 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2631 struct ieee80211_chanctx_conf *ctx)
2632 {
2633 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2634 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2635
2636 lockdep_assert_held(&mvm->mutex);
2637
2638 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2639 }
2640
2641 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2642 struct ieee80211_chanctx_conf *ctx)
2643 {
2644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2645
2646 mutex_lock(&mvm->mutex);
2647 __iwl_mvm_remove_chanctx(mvm, ctx);
2648 mutex_unlock(&mvm->mutex);
2649 }
2650
2651 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2652 struct ieee80211_chanctx_conf *ctx,
2653 u32 changed)
2654 {
2655 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2656 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2657 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2658
2659 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2660 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2661 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2662 IEEE80211_CHANCTX_CHANGE_RADAR |
2663 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2664 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2665 phy_ctxt->ref, changed))
2666 return;
2667
2668 mutex_lock(&mvm->mutex);
2669 iwl_mvm_bt_coex_vif_change(mvm);
2670 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2671 ctx->rx_chains_static,
2672 ctx->rx_chains_dynamic);
2673 mutex_unlock(&mvm->mutex);
2674 }
2675
2676 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2677 struct ieee80211_vif *vif,
2678 struct ieee80211_chanctx_conf *ctx,
2679 bool switching_chanctx)
2680 {
2681 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2682 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2684 int ret;
2685
2686 lockdep_assert_held(&mvm->mutex);
2687
2688 mvmvif->phy_ctxt = phy_ctxt;
2689
2690 switch (vif->type) {
2691 case NL80211_IFTYPE_AP:
2692 /* Unless it's a CSA flow we have nothing to do here */
2693 if (vif->csa_active) {
2694 mvmvif->ap_ibss_active = true;
2695 break;
2696 }
2697 case NL80211_IFTYPE_ADHOC:
2698 /*
2699 * The AP binding flow is handled as part of the start_ap flow
2700 * (in bss_info_changed), similarly for IBSS.
2701 */
2702 ret = 0;
2703 goto out;
2704 case NL80211_IFTYPE_STATION:
2705 case NL80211_IFTYPE_MONITOR:
2706 break;
2707 default:
2708 ret = -EINVAL;
2709 goto out;
2710 }
2711
2712 ret = iwl_mvm_binding_add_vif(mvm, vif);
2713 if (ret)
2714 goto out;
2715
2716 /*
2717 * Power state must be updated before quotas,
2718 * otherwise fw will complain.
2719 */
2720 iwl_mvm_power_update_mac(mvm);
2721
2722 /* Setting the quota at this stage is only required for monitor
2723 * interfaces. For the other types, the bss_info changed flow
2724 * will handle quota settings.
2725 */
2726 if (vif->type == NL80211_IFTYPE_MONITOR) {
2727 mvmvif->monitor_active = true;
2728 ret = iwl_mvm_update_quotas(mvm, NULL);
2729 if (ret)
2730 goto out_remove_binding;
2731 }
2732
2733 /* Handle binding during CSA */
2734 if ((vif->type == NL80211_IFTYPE_AP) ||
2735 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2736 iwl_mvm_update_quotas(mvm, NULL);
2737 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2738 }
2739
2740 goto out;
2741
2742 out_remove_binding:
2743 iwl_mvm_binding_remove_vif(mvm, vif);
2744 iwl_mvm_power_update_mac(mvm);
2745 out:
2746 if (ret)
2747 mvmvif->phy_ctxt = NULL;
2748 return ret;
2749 }
2750 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2751 struct ieee80211_vif *vif,
2752 struct ieee80211_chanctx_conf *ctx)
2753 {
2754 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2755 int ret;
2756
2757 mutex_lock(&mvm->mutex);
2758 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2759 mutex_unlock(&mvm->mutex);
2760
2761 return ret;
2762 }
2763
2764 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2765 struct ieee80211_vif *vif,
2766 struct ieee80211_chanctx_conf *ctx,
2767 bool switching_chanctx)
2768 {
2769 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2770 struct ieee80211_vif *disabled_vif = NULL;
2771
2772 lockdep_assert_held(&mvm->mutex);
2773
2774 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2775
2776 switch (vif->type) {
2777 case NL80211_IFTYPE_ADHOC:
2778 goto out;
2779 case NL80211_IFTYPE_MONITOR:
2780 mvmvif->monitor_active = false;
2781 break;
2782 case NL80211_IFTYPE_AP:
2783 /* This part is triggered only during CSA */
2784 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2785 goto out;
2786
2787 /* Set CS bit on all the stations */
2788 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2789
2790 /* Save blocked iface, the timeout is set on the next beacon */
2791 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2792
2793 mvmvif->ap_ibss_active = false;
2794 break;
2795 case NL80211_IFTYPE_STATION:
2796 if (!switching_chanctx)
2797 break;
2798
2799 disabled_vif = vif;
2800
2801 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2802 break;
2803 default:
2804 break;
2805 }
2806
2807 iwl_mvm_update_quotas(mvm, disabled_vif);
2808 iwl_mvm_binding_remove_vif(mvm, vif);
2809
2810 out:
2811 mvmvif->phy_ctxt = NULL;
2812 iwl_mvm_power_update_mac(mvm);
2813 }
2814
2815 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2816 struct ieee80211_vif *vif,
2817 struct ieee80211_chanctx_conf *ctx)
2818 {
2819 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2820
2821 mutex_lock(&mvm->mutex);
2822 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2823 mutex_unlock(&mvm->mutex);
2824 }
2825
2826 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2827 struct ieee80211_vif_chanctx_switch *vifs,
2828 int n_vifs,
2829 enum ieee80211_chanctx_switch_mode mode)
2830 {
2831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2832 int ret;
2833
2834 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2835 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2836 return -EOPNOTSUPP;
2837
2838 mutex_lock(&mvm->mutex);
2839 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2840 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2841
2842 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2843 if (ret) {
2844 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2845 goto out_reassign;
2846 }
2847
2848 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2849 true);
2850 if (ret) {
2851 IWL_ERR(mvm,
2852 "failed to assign new_ctx during channel switch\n");
2853 goto out_remove;
2854 }
2855
2856 goto out;
2857
2858 out_remove:
2859 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2860
2861 out_reassign:
2862 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2863 if (ret) {
2864 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2865 goto out_restart;
2866 }
2867
2868 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2869 true);
2870 if (ret) {
2871 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2872 goto out_restart;
2873 }
2874
2875 goto out;
2876
2877 out_restart:
2878 /* things keep failing, better restart the hw */
2879 iwl_mvm_nic_restart(mvm, false);
2880
2881 out:
2882 mutex_unlock(&mvm->mutex);
2883 return ret;
2884 }
2885
2886 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2887 struct ieee80211_sta *sta,
2888 bool set)
2889 {
2890 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2891 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2892
2893 if (!mvm_sta || !mvm_sta->vif) {
2894 IWL_ERR(mvm, "Station is not associated to a vif\n");
2895 return -EINVAL;
2896 }
2897
2898 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2899 }
2900
2901 #ifdef CONFIG_NL80211_TESTMODE
2902 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2903 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2904 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2905 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2906 };
2907
2908 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2909 struct ieee80211_vif *vif,
2910 void *data, int len)
2911 {
2912 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2913 int err;
2914 u32 noa_duration;
2915
2916 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2917 if (err)
2918 return err;
2919
2920 if (!tb[IWL_MVM_TM_ATTR_CMD])
2921 return -EINVAL;
2922
2923 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2924 case IWL_MVM_TM_CMD_SET_NOA:
2925 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2926 !vif->bss_conf.enable_beacon ||
2927 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2928 return -EINVAL;
2929
2930 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2931 if (noa_duration >= vif->bss_conf.beacon_int)
2932 return -EINVAL;
2933
2934 mvm->noa_duration = noa_duration;
2935 mvm->noa_vif = vif;
2936
2937 return iwl_mvm_update_quotas(mvm, NULL);
2938 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2939 /* must be associated client vif - ignore authorized */
2940 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2941 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2942 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2943 return -EINVAL;
2944
2945 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2946 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2947 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2948 }
2949
2950 return -EOPNOTSUPP;
2951 }
2952
2953 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2954 struct ieee80211_vif *vif,
2955 void *data, int len)
2956 {
2957 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2958 int err;
2959
2960 mutex_lock(&mvm->mutex);
2961 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2962 mutex_unlock(&mvm->mutex);
2963
2964 return err;
2965 }
2966 #endif
2967
2968 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2969 struct ieee80211_vif *vif,
2970 struct cfg80211_chan_def *chandef)
2971 {
2972 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2973 struct ieee80211_vif *csa_vif;
2974
2975 mutex_lock(&mvm->mutex);
2976
2977 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2978 lockdep_is_held(&mvm->mutex));
2979 if (WARN(csa_vif && csa_vif->csa_active,
2980 "Another CSA is already in progress"))
2981 goto out_unlock;
2982
2983 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2984 chandef->center_freq1);
2985 rcu_assign_pointer(mvm->csa_vif, vif);
2986
2987 out_unlock:
2988 mutex_unlock(&mvm->mutex);
2989 }
2990
2991 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2992 struct ieee80211_vif *vif, u32 queues, bool drop)
2993 {
2994 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2995 struct iwl_mvm_vif *mvmvif;
2996 struct iwl_mvm_sta *mvmsta;
2997
2998 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2999 return;
3000
3001 mutex_lock(&mvm->mutex);
3002 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3003 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3004
3005 if (WARN_ON_ONCE(!mvmsta))
3006 goto done;
3007
3008 if (drop) {
3009 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3010 IWL_ERR(mvm, "flush request fail\n");
3011 } else {
3012 iwl_trans_wait_tx_queue_empty(mvm->trans,
3013 mvmsta->tfd_queue_msk);
3014 }
3015 done:
3016 mutex_unlock(&mvm->mutex);
3017 }
3018
3019 const struct ieee80211_ops iwl_mvm_hw_ops = {
3020 .tx = iwl_mvm_mac_tx,
3021 .ampdu_action = iwl_mvm_mac_ampdu_action,
3022 .start = iwl_mvm_mac_start,
3023 .restart_complete = iwl_mvm_mac_restart_complete,
3024 .stop = iwl_mvm_mac_stop,
3025 .add_interface = iwl_mvm_mac_add_interface,
3026 .remove_interface = iwl_mvm_mac_remove_interface,
3027 .config = iwl_mvm_mac_config,
3028 .prepare_multicast = iwl_mvm_prepare_multicast,
3029 .configure_filter = iwl_mvm_configure_filter,
3030 .bss_info_changed = iwl_mvm_bss_info_changed,
3031 .hw_scan = iwl_mvm_mac_hw_scan,
3032 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3033 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3034 .sta_state = iwl_mvm_mac_sta_state,
3035 .sta_notify = iwl_mvm_mac_sta_notify,
3036 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3037 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3038 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3039 .sta_rc_update = iwl_mvm_sta_rc_update,
3040 .conf_tx = iwl_mvm_mac_conf_tx,
3041 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3042 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3043 .flush = iwl_mvm_mac_flush,
3044 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3045 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3046 .set_key = iwl_mvm_mac_set_key,
3047 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3048 .remain_on_channel = iwl_mvm_roc,
3049 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3050 .add_chanctx = iwl_mvm_add_chanctx,
3051 .remove_chanctx = iwl_mvm_remove_chanctx,
3052 .change_chanctx = iwl_mvm_change_chanctx,
3053 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3054 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3055 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3056
3057 .start_ap = iwl_mvm_start_ap_ibss,
3058 .stop_ap = iwl_mvm_stop_ap_ibss,
3059 .join_ibss = iwl_mvm_start_ap_ibss,
3060 .leave_ibss = iwl_mvm_stop_ap_ibss,
3061
3062 .set_tim = iwl_mvm_set_tim,
3063
3064 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3065
3066 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3067
3068 #ifdef CONFIG_PM_SLEEP
3069 /* look at d3.c */
3070 .suspend = iwl_mvm_suspend,
3071 .resume = iwl_mvm_resume,
3072 .set_wakeup = iwl_mvm_set_wakeup,
3073 .set_rekey_data = iwl_mvm_set_rekey_data,
3074 #if IS_ENABLED(CONFIG_IPV6)
3075 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3076 #endif
3077 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3078 #endif
3079 };
Linux kernel - Deliverables
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