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Merge remote-tracking branch 'xen-tip/linux-next'
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 *
43 * * Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * * Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in
47 * the documentation and/or other materials provided with the
48 * distribution.
49 * * Neither the name Intel Corporation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *
65 *****************************************************************************/
66 #include <linux/kernel.h>
67 #include <linux/slab.h>
68 #include <linux/skbuff.h>
69 #include <linux/netdevice.h>
70 #include <linux/etherdevice.h>
71 #include <linux/ip.h>
72 #include <linux/if_arp.h>
73 #include <linux/time.h>
74 #include <net/mac80211.h>
75 #include <net/ieee80211_radiotap.h>
76 #include <net/tcp.h>
77
78 #include "iwl-op-mode.h"
79 #include "iwl-io.h"
80 #include "mvm.h"
81 #include "sta.h"
82 #include "time-event.h"
83 #include "iwl-eeprom-parse.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88 #include "iwl-nvm-parse.h"
89 #include "fw-dbg.h"
90
91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
106 };
107
108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
110 .num_different_channels = 2,
111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115 };
116
117 #ifdef CONFIG_PM_SLEEP
118 static const struct nl80211_wowlan_tcp_data_token_feature
119 iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 };
124
125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137 };
138 #endif
139
140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 /*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152 enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156 };
157
158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
206 },
207 },
208 /* last filter must be empty */
209 {},
210 };
211 #endif
212
213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 {
215 if (!iwl_mvm_is_d0i3_supported(mvm))
216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
222 iwl_trans_ref(mvm->trans);
223 }
224
225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 {
227 if (!iwl_mvm_is_d0i3_supported(mvm))
228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
231 spin_lock_bh(&mvm->refs_lock);
232 if (WARN_ON(!mvm->refs[ref_type])) {
233 spin_unlock_bh(&mvm->refs_lock);
234 return;
235 }
236 mvm->refs[ref_type]--;
237 spin_unlock_bh(&mvm->refs_lock);
238 iwl_trans_unref(mvm->trans);
239 }
240
241 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
242 enum iwl_mvm_ref_type except_ref)
243 {
244 int i, j;
245
246 if (!iwl_mvm_is_d0i3_supported(mvm))
247 return;
248
249 spin_lock_bh(&mvm->refs_lock);
250 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
251 if (except_ref == i || !mvm->refs[i])
252 continue;
253
254 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
255 i, mvm->refs[i]);
256 for (j = 0; j < mvm->refs[i]; j++)
257 iwl_trans_unref(mvm->trans);
258 mvm->refs[i] = 0;
259 }
260 spin_unlock_bh(&mvm->refs_lock);
261 }
262
263 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
264 {
265 int i;
266 bool taken = false;
267
268 if (!iwl_mvm_is_d0i3_supported(mvm))
269 return true;
270
271 spin_lock_bh(&mvm->refs_lock);
272 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
273 if (mvm->refs[i]) {
274 taken = true;
275 break;
276 }
277 }
278 spin_unlock_bh(&mvm->refs_lock);
279
280 return taken;
281 }
282
283 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
284 {
285 iwl_mvm_ref(mvm, ref_type);
286
287 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
288 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
289 HZ)) {
290 WARN_ON_ONCE(1);
291 iwl_mvm_unref(mvm, ref_type);
292 return -EIO;
293 }
294
295 return 0;
296 }
297
298 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
299 {
300 int i;
301
302 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
303 for (i = 0; i < NUM_PHY_CTX; i++) {
304 mvm->phy_ctxts[i].id = i;
305 mvm->phy_ctxts[i].ref = 0;
306 }
307 }
308
309 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
310 const char *alpha2,
311 enum iwl_mcc_source src_id,
312 bool *changed)
313 {
314 struct ieee80211_regdomain *regd = NULL;
315 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
317 struct iwl_mcc_update_resp *resp;
318
319 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
320
321 lockdep_assert_held(&mvm->mutex);
322
323 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
324 if (IS_ERR_OR_NULL(resp)) {
325 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
326 PTR_ERR_OR_ZERO(resp));
327 goto out;
328 }
329
330 if (changed)
331 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
332
333 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
334 __le32_to_cpu(resp->n_channels),
335 resp->channels,
336 __le16_to_cpu(resp->mcc));
337 /* Store the return source id */
338 src_id = resp->source_id;
339 kfree(resp);
340 if (IS_ERR_OR_NULL(regd)) {
341 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
342 PTR_ERR_OR_ZERO(regd));
343 goto out;
344 }
345
346 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
347 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
348 mvm->lar_regdom_set = true;
349 mvm->mcc_src = src_id;
350
351 out:
352 return regd;
353 }
354
355 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
356 {
357 bool changed;
358 struct ieee80211_regdomain *regd;
359
360 if (!iwl_mvm_is_lar_supported(mvm))
361 return;
362
363 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
364 if (!IS_ERR_OR_NULL(regd)) {
365 /* only update the regulatory core if changed */
366 if (changed)
367 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
368
369 kfree(regd);
370 }
371 }
372
373 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
374 bool *changed)
375 {
376 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
377 iwl_mvm_is_wifi_mcc_supported(mvm) ?
378 MCC_SOURCE_GET_CURRENT :
379 MCC_SOURCE_OLD_FW, changed);
380 }
381
382 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
383 {
384 enum iwl_mcc_source used_src;
385 struct ieee80211_regdomain *regd;
386 int ret;
387 bool changed;
388 const struct ieee80211_regdomain *r =
389 rtnl_dereference(mvm->hw->wiphy->regd);
390
391 if (!r)
392 return -ENOENT;
393
394 /* save the last source in case we overwrite it below */
395 used_src = mvm->mcc_src;
396 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
397 /* Notify the firmware we support wifi location updates */
398 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
399 if (!IS_ERR_OR_NULL(regd))
400 kfree(regd);
401 }
402
403 /* Now set our last stored MCC and source */
404 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
405 &changed);
406 if (IS_ERR_OR_NULL(regd))
407 return -EIO;
408
409 /* update cfg80211 if the regdomain was changed */
410 if (changed)
411 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
412 else
413 ret = 0;
414
415 kfree(regd);
416 return ret;
417 }
418
419 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
420 {
421 struct ieee80211_hw *hw = mvm->hw;
422 int num_mac, ret, i;
423 static const u32 mvm_ciphers[] = {
424 WLAN_CIPHER_SUITE_WEP40,
425 WLAN_CIPHER_SUITE_WEP104,
426 WLAN_CIPHER_SUITE_TKIP,
427 WLAN_CIPHER_SUITE_CCMP,
428 };
429
430 /* Tell mac80211 our characteristics */
431 ieee80211_hw_set(hw, SIGNAL_DBM);
432 ieee80211_hw_set(hw, SPECTRUM_MGMT);
433 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
434 ieee80211_hw_set(hw, QUEUE_CONTROL);
435 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
436 ieee80211_hw_set(hw, SUPPORTS_PS);
437 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
438 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
439 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
440 ieee80211_hw_set(hw, CONNECTION_MONITOR);
441 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
442 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
443 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
444 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
445 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
446 if (iwl_mvm_has_new_rx_api(mvm))
447 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
448
449 if (mvm->trans->num_rx_queues > 1)
450 ieee80211_hw_set(hw, USES_RSS);
451
452 if (mvm->trans->max_skb_frags)
453 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
454
455 if (!iwl_mvm_is_dqa_supported(mvm))
456 hw->queues = mvm->first_agg_queue;
457 else
458 hw->queues = IEEE80211_MAX_QUEUES;
459 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
460 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
461 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
462 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
463 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
464 hw->rate_control_algorithm = "iwl-mvm-rs";
465 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
466 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
467
468 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
469 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
470 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
471 hw->wiphy->cipher_suites = mvm->ciphers;
472
473 if (iwl_mvm_has_new_rx_api(mvm)) {
474 mvm->ciphers[hw->wiphy->n_cipher_suites] =
475 WLAN_CIPHER_SUITE_GCMP;
476 hw->wiphy->n_cipher_suites++;
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 WLAN_CIPHER_SUITE_GCMP_256;
479 hw->wiphy->n_cipher_suites++;
480 }
481
482 /*
483 * Enable 11w if advertised by firmware and software crypto
484 * is not enabled (as the firmware will interpret some mgmt
485 * packets, so enabling it with software crypto isn't safe)
486 */
487 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
488 !iwlwifi_mod_params.sw_crypto) {
489 ieee80211_hw_set(hw, MFP_CAPABLE);
490 mvm->ciphers[hw->wiphy->n_cipher_suites] =
491 WLAN_CIPHER_SUITE_AES_CMAC;
492 hw->wiphy->n_cipher_suites++;
493 if (iwl_mvm_has_new_rx_api(mvm)) {
494 mvm->ciphers[hw->wiphy->n_cipher_suites] =
495 WLAN_CIPHER_SUITE_BIP_GMAC_128;
496 hw->wiphy->n_cipher_suites++;
497 mvm->ciphers[hw->wiphy->n_cipher_suites] =
498 WLAN_CIPHER_SUITE_BIP_GMAC_256;
499 hw->wiphy->n_cipher_suites++;
500 }
501 }
502
503 /* currently FW API supports only one optional cipher scheme */
504 if (mvm->fw->cs[0].cipher) {
505 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
506 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
507
508 mvm->hw->n_cipher_schemes = 1;
509
510 cs->cipher = le32_to_cpu(fwcs->cipher);
511 cs->iftype = BIT(NL80211_IFTYPE_STATION);
512 cs->hdr_len = fwcs->hdr_len;
513 cs->pn_len = fwcs->pn_len;
514 cs->pn_off = fwcs->pn_off;
515 cs->key_idx_off = fwcs->key_idx_off;
516 cs->key_idx_mask = fwcs->key_idx_mask;
517 cs->key_idx_shift = fwcs->key_idx_shift;
518 cs->mic_len = fwcs->mic_len;
519
520 mvm->hw->cipher_schemes = mvm->cs;
521 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
522 hw->wiphy->n_cipher_suites++;
523 }
524
525 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
526 hw->wiphy->features |=
527 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
528 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
529 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
530
531 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
532 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
533 hw->chanctx_data_size = sizeof(u16);
534
535 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
536 BIT(NL80211_IFTYPE_P2P_CLIENT) |
537 BIT(NL80211_IFTYPE_AP) |
538 BIT(NL80211_IFTYPE_P2P_GO) |
539 BIT(NL80211_IFTYPE_P2P_DEVICE) |
540 BIT(NL80211_IFTYPE_ADHOC);
541
542 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
543 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
544 if (iwl_mvm_is_lar_supported(mvm))
545 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
546 else
547 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
548 REGULATORY_DISABLE_BEACON_HINTS;
549
550 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
551 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
552
553 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
554
555 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
556 hw->wiphy->n_iface_combinations =
557 ARRAY_SIZE(iwl_mvm_iface_combinations);
558
559 hw->wiphy->max_remain_on_channel_duration = 10000;
560 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
561 /* we can compensate an offset of up to 3 channels = 15 MHz */
562 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
563
564 /* Extract MAC address */
565 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
566 hw->wiphy->addresses = mvm->addresses;
567 hw->wiphy->n_addresses = 1;
568
569 /* Extract additional MAC addresses if available */
570 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
571 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
572
573 for (i = 1; i < num_mac; i++) {
574 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
575 ETH_ALEN);
576 mvm->addresses[i].addr[5]++;
577 hw->wiphy->n_addresses++;
578 }
579
580 iwl_mvm_reset_phy_ctxts(mvm);
581
582 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
583
584 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
585
586 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
587 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
588 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
589
590 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
591 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
592 else
593 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
594
595 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
596 hw->wiphy->bands[NL80211_BAND_2GHZ] =
597 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
598 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
599 hw->wiphy->bands[NL80211_BAND_5GHZ] =
600 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
601
602 if (fw_has_capa(&mvm->fw->ucode_capa,
603 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
604 fw_has_api(&mvm->fw->ucode_capa,
605 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
606 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
607 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
608 }
609
610 hw->wiphy->hw_version = mvm->trans->hw_id;
611
612 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
613 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
614 else
615 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
616
617 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
618 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
619 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
620 /* we create the 802.11 header and zero length SSID IE. */
621 hw->wiphy->max_sched_scan_ie_len =
622 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
623 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
624 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
625
626 /*
627 * the firmware uses u8 for num of iterations, but 0xff is saved for
628 * infinite loop, so the maximum number of iterations is actually 254.
629 */
630 hw->wiphy->max_sched_scan_plan_iterations = 254;
631
632 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
633 NL80211_FEATURE_LOW_PRIORITY_SCAN |
634 NL80211_FEATURE_P2P_GO_OPPPS |
635 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
636 NL80211_FEATURE_DYNAMIC_SMPS |
637 NL80211_FEATURE_STATIC_SMPS |
638 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
639
640 if (fw_has_capa(&mvm->fw->ucode_capa,
641 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
642 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
643 if (fw_has_capa(&mvm->fw->ucode_capa,
644 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
645 hw->wiphy->features |= NL80211_FEATURE_QUIET;
646
647 if (fw_has_capa(&mvm->fw->ucode_capa,
648 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
649 hw->wiphy->features |=
650 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
651
652 if (fw_has_capa(&mvm->fw->ucode_capa,
653 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
654 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
655
656 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
657
658 #ifdef CONFIG_PM_SLEEP
659 if (iwl_mvm_is_d0i3_supported(mvm) &&
660 device_can_wakeup(mvm->trans->dev)) {
661 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
662 hw->wiphy->wowlan = &mvm->wowlan;
663 }
664
665 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
666 mvm->trans->ops->d3_suspend &&
667 mvm->trans->ops->d3_resume &&
668 device_can_wakeup(mvm->trans->dev)) {
669 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
670 WIPHY_WOWLAN_DISCONNECT |
671 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
672 WIPHY_WOWLAN_RFKILL_RELEASE |
673 WIPHY_WOWLAN_NET_DETECT;
674 if (!iwlwifi_mod_params.sw_crypto)
675 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
676 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
677 WIPHY_WOWLAN_4WAY_HANDSHAKE;
678
679 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
680 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
681 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
682 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
683 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
684 hw->wiphy->wowlan = &mvm->wowlan;
685 }
686 #endif
687
688 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
689 /* assign default bcast filtering configuration */
690 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
691 #endif
692
693 ret = iwl_mvm_leds_init(mvm);
694 if (ret)
695 return ret;
696
697 if (fw_has_capa(&mvm->fw->ucode_capa,
698 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
699 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
700 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
701 ieee80211_hw_set(hw, TDLS_WIDER_BW);
702 }
703
704 if (fw_has_capa(&mvm->fw->ucode_capa,
705 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
706 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
707 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
708 }
709
710 hw->netdev_features |= mvm->cfg->features;
711 if (!iwl_mvm_is_csum_supported(mvm)) {
712 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
713 NETIF_F_RXCSUM);
714 /* We may support SW TX CSUM */
715 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
716 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
717 }
718
719 ret = ieee80211_register_hw(mvm->hw);
720 if (ret)
721 iwl_mvm_leds_exit(mvm);
722
723 return ret;
724 }
725
726 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
727 struct ieee80211_sta *sta,
728 struct sk_buff *skb)
729 {
730 struct iwl_mvm_sta *mvmsta;
731 bool defer = false;
732
733 /*
734 * double check the IN_D0I3 flag both before and after
735 * taking the spinlock, in order to prevent taking
736 * the spinlock when not needed.
737 */
738 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
739 return false;
740
741 spin_lock(&mvm->d0i3_tx_lock);
742 /*
743 * testing the flag again ensures the skb dequeue
744 * loop (on d0i3 exit) hasn't run yet.
745 */
746 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
747 goto out;
748
749 mvmsta = iwl_mvm_sta_from_mac80211(sta);
750 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
751 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
752 goto out;
753
754 __skb_queue_tail(&mvm->d0i3_tx, skb);
755 ieee80211_stop_queues(mvm->hw);
756
757 /* trigger wakeup */
758 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
759 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
760
761 defer = true;
762 out:
763 spin_unlock(&mvm->d0i3_tx_lock);
764 return defer;
765 }
766
767 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
768 struct ieee80211_tx_control *control,
769 struct sk_buff *skb)
770 {
771 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
772 struct ieee80211_sta *sta = control->sta;
773 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
774 struct ieee80211_hdr *hdr = (void *)skb->data;
775
776 if (iwl_mvm_is_radio_killed(mvm)) {
777 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
778 goto drop;
779 }
780
781 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
782 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
783 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
784 goto drop;
785
786 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
787 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
788 ieee80211_is_mgmt(hdr->frame_control) &&
789 !ieee80211_is_deauth(hdr->frame_control) &&
790 !ieee80211_is_disassoc(hdr->frame_control) &&
791 !ieee80211_is_action(hdr->frame_control)))
792 sta = NULL;
793
794 if (sta) {
795 if (iwl_mvm_defer_tx(mvm, sta, skb))
796 return;
797 if (iwl_mvm_tx_skb(mvm, skb, sta))
798 goto drop;
799 return;
800 }
801
802 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
803 goto drop;
804 return;
805 drop:
806 ieee80211_free_txskb(hw, skb);
807 }
808
809 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
810 {
811 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
812 return false;
813 return true;
814 }
815
816 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
817 {
818 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
819 return false;
820 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
821 return true;
822
823 /* enabled by default */
824 return true;
825 }
826
827 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
828 do { \
829 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
830 break; \
831 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
832 } while (0)
833
834 static void
835 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
836 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
837 enum ieee80211_ampdu_mlme_action action)
838 {
839 struct iwl_fw_dbg_trigger_tlv *trig;
840 struct iwl_fw_dbg_trigger_ba *ba_trig;
841
842 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
843 return;
844
845 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
846 ba_trig = (void *)trig->data;
847
848 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
849 return;
850
851 switch (action) {
852 case IEEE80211_AMPDU_TX_OPERATIONAL: {
853 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
854 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
855
856 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
857 "TX AGG START: MAC %pM tid %d ssn %d\n",
858 sta->addr, tid, tid_data->ssn);
859 break;
860 }
861 case IEEE80211_AMPDU_TX_STOP_CONT:
862 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
863 "TX AGG STOP: MAC %pM tid %d\n",
864 sta->addr, tid);
865 break;
866 case IEEE80211_AMPDU_RX_START:
867 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
868 "RX AGG START: MAC %pM tid %d ssn %d\n",
869 sta->addr, tid, rx_ba_ssn);
870 break;
871 case IEEE80211_AMPDU_RX_STOP:
872 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
873 "RX AGG STOP: MAC %pM tid %d\n",
874 sta->addr, tid);
875 break;
876 default:
877 break;
878 }
879 }
880
881 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
882 struct ieee80211_vif *vif,
883 struct ieee80211_ampdu_params *params)
884 {
885 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
886 int ret;
887 bool tx_agg_ref = false;
888 struct ieee80211_sta *sta = params->sta;
889 enum ieee80211_ampdu_mlme_action action = params->action;
890 u16 tid = params->tid;
891 u16 *ssn = &params->ssn;
892 u8 buf_size = params->buf_size;
893 bool amsdu = params->amsdu;
894 u16 timeout = params->timeout;
895
896 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
897 sta->addr, tid, action);
898
899 if (!(mvm->nvm_data->sku_cap_11n_enable))
900 return -EACCES;
901
902 /* return from D0i3 before starting a new Tx aggregation */
903 switch (action) {
904 case IEEE80211_AMPDU_TX_START:
905 case IEEE80211_AMPDU_TX_STOP_CONT:
906 case IEEE80211_AMPDU_TX_STOP_FLUSH:
907 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
908 case IEEE80211_AMPDU_TX_OPERATIONAL:
909 /*
910 * for tx start, wait synchronously until D0i3 exit to
911 * get the correct sequence number for the tid.
912 * additionally, some other ampdu actions use direct
913 * target access, which is not handled automatically
914 * by the trans layer (unlike commands), so wait for
915 * d0i3 exit in these cases as well.
916 */
917 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
918 if (ret)
919 return ret;
920
921 tx_agg_ref = true;
922 break;
923 default:
924 break;
925 }
926
927 mutex_lock(&mvm->mutex);
928
929 switch (action) {
930 case IEEE80211_AMPDU_RX_START:
931 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
932 ret = -EINVAL;
933 break;
934 }
935 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
936 timeout);
937 break;
938 case IEEE80211_AMPDU_RX_STOP:
939 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
940 timeout);
941 break;
942 case IEEE80211_AMPDU_TX_START:
943 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
944 ret = -EINVAL;
945 break;
946 }
947 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
948 break;
949 case IEEE80211_AMPDU_TX_STOP_CONT:
950 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
951 break;
952 case IEEE80211_AMPDU_TX_STOP_FLUSH:
953 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
954 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
955 break;
956 case IEEE80211_AMPDU_TX_OPERATIONAL:
957 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
958 buf_size, amsdu);
959 break;
960 default:
961 WARN_ON_ONCE(1);
962 ret = -EINVAL;
963 break;
964 }
965
966 if (!ret) {
967 u16 rx_ba_ssn = 0;
968
969 if (action == IEEE80211_AMPDU_RX_START)
970 rx_ba_ssn = *ssn;
971
972 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
973 rx_ba_ssn, action);
974 }
975 mutex_unlock(&mvm->mutex);
976
977 /*
978 * If the tid is marked as started, we won't use it for offloaded
979 * traffic on the next D0i3 entry. It's safe to unref.
980 */
981 if (tx_agg_ref)
982 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
983
984 return ret;
985 }
986
987 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
988 struct ieee80211_vif *vif)
989 {
990 struct iwl_mvm *mvm = data;
991 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
992
993 mvmvif->uploaded = false;
994 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
995
996 spin_lock_bh(&mvm->time_event_lock);
997 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
998 spin_unlock_bh(&mvm->time_event_lock);
999
1000 mvmvif->phy_ctxt = NULL;
1001 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1002 }
1003
1004 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1005 {
1006 /* clear the D3 reconfig, we only need it to avoid dumping a
1007 * firmware coredump on reconfiguration, we shouldn't do that
1008 * on D3->D0 transition
1009 */
1010 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1011 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1012 iwl_mvm_fw_error_dump(mvm);
1013 }
1014
1015 /* cleanup all stale references (scan, roc), but keep the
1016 * ucode_down ref until reconfig is complete
1017 */
1018 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1019
1020 iwl_mvm_stop_device(mvm);
1021
1022 mvm->scan_status = 0;
1023 mvm->ps_disabled = false;
1024 mvm->calibrating = false;
1025
1026 /* just in case one was running */
1027 iwl_mvm_cleanup_roc_te(mvm);
1028 ieee80211_remain_on_channel_expired(mvm->hw);
1029
1030 /*
1031 * cleanup all interfaces, even inactive ones, as some might have
1032 * gone down during the HW restart
1033 */
1034 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1035
1036 mvm->p2p_device_vif = NULL;
1037 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1038
1039 iwl_mvm_reset_phy_ctxts(mvm);
1040 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1041 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1042 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1043 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1044 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1045 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1046
1047 ieee80211_wake_queues(mvm->hw);
1048
1049 /* clear any stale d0i3 state */
1050 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1051
1052 mvm->vif_count = 0;
1053 mvm->rx_ba_sessions = 0;
1054 mvm->fw_dbg_conf = FW_DBG_INVALID;
1055
1056 /* keep statistics ticking */
1057 iwl_mvm_accu_radio_stats(mvm);
1058 }
1059
1060 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1061 {
1062 int ret;
1063
1064 lockdep_assert_held(&mvm->mutex);
1065
1066 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1067 /* Clean up some internal and mac80211 state on restart */
1068 iwl_mvm_restart_cleanup(mvm);
1069 } else {
1070 /* Hold the reference to prevent runtime suspend while
1071 * the start procedure runs. It's a bit confusing
1072 * that the UCODE_DOWN reference is taken, but it just
1073 * means "UCODE is not UP yet". ( TODO: rename this
1074 * reference).
1075 */
1076 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1077 }
1078 ret = iwl_mvm_up(mvm);
1079
1080 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1081 /* Something went wrong - we need to finish some cleanup
1082 * that normally iwl_mvm_mac_restart_complete() below
1083 * would do.
1084 */
1085 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1086 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1087 }
1088
1089 return ret;
1090 }
1091
1092 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1093 {
1094 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1095 int ret;
1096
1097 /* Some hw restart cleanups must not hold the mutex */
1098 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1099 /*
1100 * Make sure we are out of d0i3. This is needed
1101 * to make sure the reference accounting is correct
1102 * (and there is no stale d0i3_exit_work).
1103 */
1104 wait_event_timeout(mvm->d0i3_exit_waitq,
1105 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1106 &mvm->status),
1107 HZ);
1108 }
1109
1110 mutex_lock(&mvm->mutex);
1111 ret = __iwl_mvm_mac_start(mvm);
1112 mutex_unlock(&mvm->mutex);
1113
1114 return ret;
1115 }
1116
1117 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1118 {
1119 int ret;
1120
1121 mutex_lock(&mvm->mutex);
1122
1123 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1124 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1125 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1126 if (ret)
1127 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1128 ret);
1129
1130 /* allow transport/FW low power modes */
1131 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1132
1133 /*
1134 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1135 * of packets the FW sent out, so we must reconnect.
1136 */
1137 iwl_mvm_teardown_tdls_peers(mvm);
1138
1139 mutex_unlock(&mvm->mutex);
1140 }
1141
1142 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1143 {
1144 if (iwl_mvm_is_d0i3_supported(mvm) &&
1145 iwl_mvm_enter_d0i3_on_suspend(mvm))
1146 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1147 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1148 &mvm->status),
1149 HZ),
1150 "D0i3 exit on resume timed out\n");
1151 }
1152
1153 static void
1154 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1155 enum ieee80211_reconfig_type reconfig_type)
1156 {
1157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1158
1159 switch (reconfig_type) {
1160 case IEEE80211_RECONFIG_TYPE_RESTART:
1161 iwl_mvm_restart_complete(mvm);
1162 break;
1163 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1164 iwl_mvm_resume_complete(mvm);
1165 break;
1166 }
1167 }
1168
1169 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1170 {
1171 lockdep_assert_held(&mvm->mutex);
1172
1173 /* firmware counters are obviously reset now, but we shouldn't
1174 * partially track so also clear the fw_reset_accu counters.
1175 */
1176 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1177
1178 /* async_handlers_wk is now blocked */
1179
1180 /*
1181 * The work item could be running or queued if the
1182 * ROC time event stops just as we get here.
1183 */
1184 flush_work(&mvm->roc_done_wk);
1185
1186 iwl_mvm_stop_device(mvm);
1187
1188 iwl_mvm_async_handlers_purge(mvm);
1189 /* async_handlers_list is empty and will stay empty: HW is stopped */
1190
1191 /* the fw is stopped, the aux sta is dead: clean up driver state */
1192 iwl_mvm_del_aux_sta(mvm);
1193
1194 iwl_free_fw_paging(mvm);
1195
1196 /*
1197 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1198 * won't be called in this case).
1199 * But make sure to cleanup interfaces that have gone down before/during
1200 * HW restart was requested.
1201 */
1202 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1203 ieee80211_iterate_interfaces(mvm->hw, 0,
1204 iwl_mvm_cleanup_iterator, mvm);
1205
1206 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1207 * make sure there's nothing left there and warn if any is found.
1208 */
1209 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1210 int i;
1211
1212 for (i = 0; i < mvm->max_scans; i++) {
1213 if (WARN_ONCE(mvm->scan_uid_status[i],
1214 "UMAC scan UID %d status was not cleaned\n",
1215 i))
1216 mvm->scan_uid_status[i] = 0;
1217 }
1218 }
1219 }
1220
1221 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1222 {
1223 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1224
1225 flush_work(&mvm->d0i3_exit_work);
1226 flush_work(&mvm->async_handlers_wk);
1227 flush_work(&mvm->add_stream_wk);
1228 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1229 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1230 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1231 iwl_mvm_free_fw_dump_desc(mvm);
1232
1233 mutex_lock(&mvm->mutex);
1234 __iwl_mvm_mac_stop(mvm);
1235 mutex_unlock(&mvm->mutex);
1236
1237 /*
1238 * The worker might have been waiting for the mutex, let it run and
1239 * discover that its list is now empty.
1240 */
1241 cancel_work_sync(&mvm->async_handlers_wk);
1242 }
1243
1244 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1245 {
1246 u16 i;
1247
1248 lockdep_assert_held(&mvm->mutex);
1249
1250 for (i = 0; i < NUM_PHY_CTX; i++)
1251 if (!mvm->phy_ctxts[i].ref)
1252 return &mvm->phy_ctxts[i];
1253
1254 IWL_ERR(mvm, "No available PHY context\n");
1255 return NULL;
1256 }
1257
1258 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1259 s16 tx_power)
1260 {
1261 struct iwl_dev_tx_power_cmd cmd = {
1262 .v3.v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1263 .v3.v2.mac_context_id =
1264 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1265 .v3.v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1266 };
1267 int len = sizeof(cmd);
1268
1269 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1270 cmd.v3.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1271
1272 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1273 len = sizeof(cmd.v3);
1274 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1275 len = sizeof(cmd.v3.v2);
1276
1277 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1278 }
1279
1280 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1281 struct ieee80211_vif *vif)
1282 {
1283 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1284 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1285 int ret;
1286
1287 mvmvif->mvm = mvm;
1288
1289 /*
1290 * make sure D0i3 exit is completed, otherwise a target access
1291 * during tx queue configuration could be done when still in
1292 * D0i3 state.
1293 */
1294 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1295 if (ret)
1296 return ret;
1297
1298 /*
1299 * Not much to do here. The stack will not allow interface
1300 * types or combinations that we didn't advertise, so we
1301 * don't really have to check the types.
1302 */
1303
1304 mutex_lock(&mvm->mutex);
1305
1306 /* make sure that beacon statistics don't go backwards with FW reset */
1307 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1308 mvmvif->beacon_stats.accu_num_beacons +=
1309 mvmvif->beacon_stats.num_beacons;
1310
1311 /* Allocate resources for the MAC context, and add it to the fw */
1312 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1313 if (ret)
1314 goto out_unlock;
1315
1316 /* Counting number of interfaces is needed for legacy PM */
1317 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1318 mvm->vif_count++;
1319
1320 /*
1321 * The AP binding flow can be done only after the beacon
1322 * template is configured (which happens only in the mac80211
1323 * start_ap() flow), and adding the broadcast station can happen
1324 * only after the binding.
1325 * In addition, since modifying the MAC before adding a bcast
1326 * station is not allowed by the FW, delay the adding of MAC context to
1327 * the point where we can also add the bcast station.
1328 * In short: there's not much we can do at this point, other than
1329 * allocating resources :)
1330 */
1331 if (vif->type == NL80211_IFTYPE_AP ||
1332 vif->type == NL80211_IFTYPE_ADHOC) {
1333 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1334 if (ret) {
1335 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1336 goto out_release;
1337 }
1338
1339 iwl_mvm_vif_dbgfs_register(mvm, vif);
1340 goto out_unlock;
1341 }
1342
1343 mvmvif->features |= hw->netdev_features;
1344
1345 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1346 if (ret)
1347 goto out_release;
1348
1349 ret = iwl_mvm_power_update_mac(mvm);
1350 if (ret)
1351 goto out_remove_mac;
1352
1353 /* beacon filtering */
1354 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1355 if (ret)
1356 goto out_remove_mac;
1357
1358 if (!mvm->bf_allowed_vif &&
1359 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1360 mvm->bf_allowed_vif = mvmvif;
1361 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1362 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1363 }
1364
1365 /*
1366 * P2P_DEVICE interface does not have a channel context assigned to it,
1367 * so a dedicated PHY context is allocated to it and the corresponding
1368 * MAC context is bound to it at this stage.
1369 */
1370 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1371
1372 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1373 if (!mvmvif->phy_ctxt) {
1374 ret = -ENOSPC;
1375 goto out_free_bf;
1376 }
1377
1378 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1379 ret = iwl_mvm_binding_add_vif(mvm, vif);
1380 if (ret)
1381 goto out_unref_phy;
1382
1383 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1384 if (ret)
1385 goto out_unbind;
1386
1387 /* Save a pointer to p2p device vif, so it can later be used to
1388 * update the p2p device MAC when a GO is started/stopped */
1389 mvm->p2p_device_vif = vif;
1390 }
1391
1392 iwl_mvm_vif_dbgfs_register(mvm, vif);
1393 goto out_unlock;
1394
1395 out_unbind:
1396 iwl_mvm_binding_remove_vif(mvm, vif);
1397 out_unref_phy:
1398 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1399 out_free_bf:
1400 if (mvm->bf_allowed_vif == mvmvif) {
1401 mvm->bf_allowed_vif = NULL;
1402 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1403 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1404 }
1405 out_remove_mac:
1406 mvmvif->phy_ctxt = NULL;
1407 iwl_mvm_mac_ctxt_remove(mvm, vif);
1408 out_release:
1409 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1410 mvm->vif_count--;
1411
1412 iwl_mvm_mac_ctxt_release(mvm, vif);
1413 out_unlock:
1414 mutex_unlock(&mvm->mutex);
1415
1416 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1417
1418 return ret;
1419 }
1420
1421 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1422 struct ieee80211_vif *vif)
1423 {
1424 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1425
1426 if (tfd_msk) {
1427 /*
1428 * mac80211 first removes all the stations of the vif and
1429 * then removes the vif. When it removes a station it also
1430 * flushes the AMPDU session. So by now, all the AMPDU sessions
1431 * of all the stations of this vif are closed, and the queues
1432 * of these AMPDU sessions are properly closed.
1433 * We still need to take care of the shared queues of the vif.
1434 * Flush them here.
1435 */
1436 mutex_lock(&mvm->mutex);
1437 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1438 mutex_unlock(&mvm->mutex);
1439
1440 /*
1441 * There are transports that buffer a few frames in the host.
1442 * For these, the flush above isn't enough since while we were
1443 * flushing, the transport might have sent more frames to the
1444 * device. To solve this, wait here until the transport is
1445 * empty. Technically, this could have replaced the flush
1446 * above, but flush is much faster than draining. So flush
1447 * first, and drain to make sure we have no frames in the
1448 * transport anymore.
1449 * If a station still had frames on the shared queues, it is
1450 * already marked as draining, so to complete the draining, we
1451 * just need to wait until the transport is empty.
1452 */
1453 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1454 }
1455
1456 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1457 /*
1458 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1459 * We assume here that all the packets sent to the OFFCHANNEL
1460 * queue are sent in ROC session.
1461 */
1462 flush_work(&mvm->roc_done_wk);
1463 } else {
1464 /*
1465 * By now, all the AC queues are empty. The AGG queues are
1466 * empty too. We already got all the Tx responses for all the
1467 * packets in the queues. The drain work can have been
1468 * triggered. Flush it.
1469 */
1470 flush_work(&mvm->sta_drained_wk);
1471 }
1472 }
1473
1474 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1475 struct ieee80211_vif *vif)
1476 {
1477 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1478 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1479
1480 iwl_mvm_prepare_mac_removal(mvm, vif);
1481
1482 mutex_lock(&mvm->mutex);
1483
1484 if (mvm->bf_allowed_vif == mvmvif) {
1485 mvm->bf_allowed_vif = NULL;
1486 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1487 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1488 }
1489
1490 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1491
1492 /*
1493 * For AP/GO interface, the tear down of the resources allocated to the
1494 * interface is be handled as part of the stop_ap flow.
1495 */
1496 if (vif->type == NL80211_IFTYPE_AP ||
1497 vif->type == NL80211_IFTYPE_ADHOC) {
1498 #ifdef CONFIG_NL80211_TESTMODE
1499 if (vif == mvm->noa_vif) {
1500 mvm->noa_vif = NULL;
1501 mvm->noa_duration = 0;
1502 }
1503 #endif
1504 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1505 goto out_release;
1506 }
1507
1508 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1509 mvm->p2p_device_vif = NULL;
1510 iwl_mvm_rm_bcast_sta(mvm, vif);
1511 iwl_mvm_binding_remove_vif(mvm, vif);
1512 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1513 mvmvif->phy_ctxt = NULL;
1514 }
1515
1516 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1517 mvm->vif_count--;
1518
1519 iwl_mvm_power_update_mac(mvm);
1520 iwl_mvm_mac_ctxt_remove(mvm, vif);
1521
1522 out_release:
1523 iwl_mvm_mac_ctxt_release(mvm, vif);
1524 mutex_unlock(&mvm->mutex);
1525 }
1526
1527 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1528 {
1529 return 0;
1530 }
1531
1532 struct iwl_mvm_mc_iter_data {
1533 struct iwl_mvm *mvm;
1534 int port_id;
1535 };
1536
1537 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1538 struct ieee80211_vif *vif)
1539 {
1540 struct iwl_mvm_mc_iter_data *data = _data;
1541 struct iwl_mvm *mvm = data->mvm;
1542 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1543 int ret, len;
1544
1545 /* if we don't have free ports, mcast frames will be dropped */
1546 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1547 return;
1548
1549 if (vif->type != NL80211_IFTYPE_STATION ||
1550 !vif->bss_conf.assoc)
1551 return;
1552
1553 cmd->port_id = data->port_id++;
1554 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1555 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1556
1557 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1558 if (ret)
1559 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1560 }
1561
1562 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1563 {
1564 struct iwl_mvm_mc_iter_data iter_data = {
1565 .mvm = mvm,
1566 };
1567
1568 lockdep_assert_held(&mvm->mutex);
1569
1570 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1571 return;
1572
1573 ieee80211_iterate_active_interfaces_atomic(
1574 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1575 iwl_mvm_mc_iface_iterator, &iter_data);
1576 }
1577
1578 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1579 struct netdev_hw_addr_list *mc_list)
1580 {
1581 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1582 struct iwl_mcast_filter_cmd *cmd;
1583 struct netdev_hw_addr *addr;
1584 int addr_count;
1585 bool pass_all;
1586 int len;
1587
1588 addr_count = netdev_hw_addr_list_count(mc_list);
1589 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1590 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1591 if (pass_all)
1592 addr_count = 0;
1593
1594 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1595 cmd = kzalloc(len, GFP_ATOMIC);
1596 if (!cmd)
1597 return 0;
1598
1599 if (pass_all) {
1600 cmd->pass_all = 1;
1601 return (u64)(unsigned long)cmd;
1602 }
1603
1604 netdev_hw_addr_list_for_each(addr, mc_list) {
1605 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1606 cmd->count, addr->addr);
1607 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1608 addr->addr, ETH_ALEN);
1609 cmd->count++;
1610 }
1611
1612 return (u64)(unsigned long)cmd;
1613 }
1614
1615 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1616 unsigned int changed_flags,
1617 unsigned int *total_flags,
1618 u64 multicast)
1619 {
1620 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1621 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1622
1623 mutex_lock(&mvm->mutex);
1624
1625 /* replace previous configuration */
1626 kfree(mvm->mcast_filter_cmd);
1627 mvm->mcast_filter_cmd = cmd;
1628
1629 if (!cmd)
1630 goto out;
1631
1632 iwl_mvm_recalc_multicast(mvm);
1633 out:
1634 mutex_unlock(&mvm->mutex);
1635 *total_flags = 0;
1636 }
1637
1638 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1639 struct ieee80211_vif *vif,
1640 unsigned int filter_flags,
1641 unsigned int changed_flags)
1642 {
1643 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1644
1645 /* We support only filter for probe requests */
1646 if (!(changed_flags & FIF_PROBE_REQ))
1647 return;
1648
1649 /* Supported only for p2p client interfaces */
1650 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1651 !vif->p2p)
1652 return;
1653
1654 mutex_lock(&mvm->mutex);
1655 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1656 mutex_unlock(&mvm->mutex);
1657 }
1658
1659 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1660 struct iwl_bcast_iter_data {
1661 struct iwl_mvm *mvm;
1662 struct iwl_bcast_filter_cmd *cmd;
1663 u8 current_filter;
1664 };
1665
1666 static void
1667 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1668 const struct iwl_fw_bcast_filter *in_filter,
1669 struct iwl_fw_bcast_filter *out_filter)
1670 {
1671 struct iwl_fw_bcast_filter_attr *attr;
1672 int i;
1673
1674 memcpy(out_filter, in_filter, sizeof(*out_filter));
1675
1676 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1677 attr = &out_filter->attrs[i];
1678
1679 if (!attr->mask)
1680 break;
1681
1682 switch (attr->reserved1) {
1683 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1684 if (vif->bss_conf.arp_addr_cnt != 1) {
1685 attr->mask = 0;
1686 continue;
1687 }
1688
1689 attr->val = vif->bss_conf.arp_addr_list[0];
1690 break;
1691 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1692 attr->val = *(__be32 *)&vif->addr[2];
1693 break;
1694 default:
1695 break;
1696 }
1697 attr->reserved1 = 0;
1698 out_filter->num_attrs++;
1699 }
1700 }
1701
1702 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1703 struct ieee80211_vif *vif)
1704 {
1705 struct iwl_bcast_iter_data *data = _data;
1706 struct iwl_mvm *mvm = data->mvm;
1707 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1708 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1709 struct iwl_fw_bcast_mac *bcast_mac;
1710 int i;
1711
1712 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1713 return;
1714
1715 bcast_mac = &cmd->macs[mvmvif->id];
1716
1717 /*
1718 * enable filtering only for associated stations, but not for P2P
1719 * Clients
1720 */
1721 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1722 !vif->bss_conf.assoc)
1723 return;
1724
1725 bcast_mac->default_discard = 1;
1726
1727 /* copy all configured filters */
1728 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1729 /*
1730 * Make sure we don't exceed our filters limit.
1731 * if there is still a valid filter to be configured,
1732 * be on the safe side and just allow bcast for this mac.
1733 */
1734 if (WARN_ON_ONCE(data->current_filter >=
1735 ARRAY_SIZE(cmd->filters))) {
1736 bcast_mac->default_discard = 0;
1737 bcast_mac->attached_filters = 0;
1738 break;
1739 }
1740
1741 iwl_mvm_set_bcast_filter(vif,
1742 &mvm->bcast_filters[i],
1743 &cmd->filters[data->current_filter]);
1744
1745 /* skip current filter if it contains no attributes */
1746 if (!cmd->filters[data->current_filter].num_attrs)
1747 continue;
1748
1749 /* attach the filter to current mac */
1750 bcast_mac->attached_filters |=
1751 cpu_to_le16(BIT(data->current_filter));
1752
1753 data->current_filter++;
1754 }
1755 }
1756
1757 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1758 struct iwl_bcast_filter_cmd *cmd)
1759 {
1760 struct iwl_bcast_iter_data iter_data = {
1761 .mvm = mvm,
1762 .cmd = cmd,
1763 };
1764
1765 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1766 return false;
1767
1768 memset(cmd, 0, sizeof(*cmd));
1769 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1770 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1771
1772 #ifdef CONFIG_IWLWIFI_DEBUGFS
1773 /* use debugfs filters/macs if override is configured */
1774 if (mvm->dbgfs_bcast_filtering.override) {
1775 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1776 sizeof(cmd->filters));
1777 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1778 sizeof(cmd->macs));
1779 return true;
1780 }
1781 #endif
1782
1783 /* if no filters are configured, do nothing */
1784 if (!mvm->bcast_filters)
1785 return false;
1786
1787 /* configure and attach these filters for each associated sta vif */
1788 ieee80211_iterate_active_interfaces(
1789 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1790 iwl_mvm_bcast_filter_iterator, &iter_data);
1791
1792 return true;
1793 }
1794
1795 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1796 {
1797 struct iwl_bcast_filter_cmd cmd;
1798
1799 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1800 return 0;
1801
1802 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1803 return 0;
1804
1805 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1806 sizeof(cmd), &cmd);
1807 }
1808 #else
1809 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1810 {
1811 return 0;
1812 }
1813 #endif
1814
1815 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1816 struct ieee80211_vif *vif)
1817 {
1818 struct iwl_mu_group_mgmt_cmd cmd = {};
1819
1820 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1821 WLAN_MEMBERSHIP_LEN);
1822 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1823 WLAN_USER_POSITION_LEN);
1824
1825 return iwl_mvm_send_cmd_pdu(mvm,
1826 WIDE_ID(DATA_PATH_GROUP,
1827 UPDATE_MU_GROUPS_CMD),
1828 0, sizeof(cmd), &cmd);
1829 }
1830
1831 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1832 struct ieee80211_vif *vif)
1833 {
1834 if (vif->mu_mimo_owner) {
1835 struct iwl_mu_group_mgmt_notif *notif = _data;
1836
1837 /*
1838 * MU-MIMO Group Id action frame is little endian. We treat
1839 * the data received from firmware as if it came from the
1840 * action frame, so no conversion is needed.
1841 */
1842 ieee80211_update_mu_groups(vif,
1843 (u8 *)&notif->membership_status,
1844 (u8 *)&notif->user_position);
1845 }
1846 }
1847
1848 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1849 struct iwl_rx_cmd_buffer *rxb)
1850 {
1851 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1852 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1853
1854 ieee80211_iterate_active_interfaces_atomic(
1855 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1856 iwl_mvm_mu_mimo_iface_iterator, notif);
1857 }
1858
1859 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1860 struct ieee80211_vif *vif,
1861 struct ieee80211_bss_conf *bss_conf,
1862 u32 changes)
1863 {
1864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1865 int ret;
1866
1867 /*
1868 * Re-calculate the tsf id, as the master-slave relations depend on the
1869 * beacon interval, which was not known when the station interface was
1870 * added.
1871 */
1872 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1873 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1874
1875 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1876 mvmvif->lqm_active)
1877 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1878 0, 0);
1879
1880 /*
1881 * If we're not associated yet, take the (new) BSSID before associating
1882 * so the firmware knows. If we're already associated, then use the old
1883 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1884 * branch for disassociation below.
1885 */
1886 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1887 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1888
1889 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1890 if (ret)
1891 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1892
1893 /* after sending it once, adopt mac80211 data */
1894 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1895 mvmvif->associated = bss_conf->assoc;
1896
1897 if (changes & BSS_CHANGED_ASSOC) {
1898 if (bss_conf->assoc) {
1899 /* clear statistics to get clean beacon counter */
1900 iwl_mvm_request_statistics(mvm, true);
1901 memset(&mvmvif->beacon_stats, 0,
1902 sizeof(mvmvif->beacon_stats));
1903
1904 /* add quota for this interface */
1905 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1906 if (ret) {
1907 IWL_ERR(mvm, "failed to update quotas\n");
1908 return;
1909 }
1910
1911 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1912 &mvm->status)) {
1913 /*
1914 * If we're restarting then the firmware will
1915 * obviously have lost synchronisation with
1916 * the AP. It will attempt to synchronise by
1917 * itself, but we can make it more reliable by
1918 * scheduling a session protection time event.
1919 *
1920 * The firmware needs to receive a beacon to
1921 * catch up with synchronisation, use 110% of
1922 * the beacon interval.
1923 *
1924 * Set a large maximum delay to allow for more
1925 * than a single interface.
1926 */
1927 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1928 iwl_mvm_protect_session(mvm, vif, dur, dur,
1929 5 * dur, false);
1930 }
1931
1932 iwl_mvm_sf_update(mvm, vif, false);
1933 iwl_mvm_power_vif_assoc(mvm, vif);
1934 if (vif->p2p) {
1935 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1936 iwl_mvm_update_smps(mvm, vif,
1937 IWL_MVM_SMPS_REQ_PROT,
1938 IEEE80211_SMPS_DYNAMIC);
1939 }
1940 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1941 /*
1942 * If update fails - SF might be running in associated
1943 * mode while disassociated - which is forbidden.
1944 */
1945 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1946 "Failed to update SF upon disassociation\n");
1947
1948 /* remove AP station now that the MAC is unassoc */
1949 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1950 if (ret)
1951 IWL_ERR(mvm, "failed to remove AP station\n");
1952
1953 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1954 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1955 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1956 /* remove quota for this interface */
1957 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1958 if (ret)
1959 IWL_ERR(mvm, "failed to update quotas\n");
1960
1961 if (vif->p2p)
1962 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1963
1964 /* this will take the cleared BSSID from bss_conf */
1965 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1966 if (ret)
1967 IWL_ERR(mvm,
1968 "failed to update MAC %pM (clear after unassoc)\n",
1969 vif->addr);
1970 }
1971
1972 /*
1973 * The firmware tracks the MU-MIMO group on its own.
1974 * However, on HW restart we should restore this data.
1975 */
1976 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1977 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1978 ret = iwl_mvm_update_mu_groups(mvm, vif);
1979 if (ret)
1980 IWL_ERR(mvm,
1981 "failed to update VHT MU_MIMO groups\n");
1982 }
1983
1984 iwl_mvm_recalc_multicast(mvm);
1985 iwl_mvm_configure_bcast_filter(mvm);
1986
1987 /* reset rssi values */
1988 mvmvif->bf_data.ave_beacon_signal = 0;
1989
1990 iwl_mvm_bt_coex_vif_change(mvm);
1991 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1992 IEEE80211_SMPS_AUTOMATIC);
1993 if (fw_has_capa(&mvm->fw->ucode_capa,
1994 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1995 iwl_mvm_config_scan(mvm);
1996 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1997 /*
1998 * We received a beacon _after_ association so
1999 * remove the session protection.
2000 */
2001 iwl_mvm_remove_time_event(mvm, mvmvif,
2002 &mvmvif->time_event_data);
2003 }
2004
2005 if (changes & BSS_CHANGED_BEACON_INFO) {
2006 iwl_mvm_sf_update(mvm, vif, false);
2007 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2008 }
2009
2010 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2011 /*
2012 * Send power command on every beacon change,
2013 * because we may have not enabled beacon abort yet.
2014 */
2015 BSS_CHANGED_BEACON_INFO)) {
2016 ret = iwl_mvm_power_update_mac(mvm);
2017 if (ret)
2018 IWL_ERR(mvm, "failed to update power mode\n");
2019 }
2020
2021 if (changes & BSS_CHANGED_TXPOWER) {
2022 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2023 bss_conf->txpower);
2024 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2025 }
2026
2027 if (changes & BSS_CHANGED_CQM) {
2028 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2029 /* reset cqm events tracking */
2030 mvmvif->bf_data.last_cqm_event = 0;
2031 if (mvmvif->bf_data.bf_enabled) {
2032 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2033 if (ret)
2034 IWL_ERR(mvm,
2035 "failed to update CQM thresholds\n");
2036 }
2037 }
2038
2039 if (changes & BSS_CHANGED_ARP_FILTER) {
2040 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2041 iwl_mvm_configure_bcast_filter(mvm);
2042 }
2043 }
2044
2045 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2046 struct ieee80211_vif *vif)
2047 {
2048 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2049 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2050 int ret;
2051
2052 /*
2053 * iwl_mvm_mac_ctxt_add() might read directly from the device
2054 * (the system time), so make sure it is available.
2055 */
2056 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2057 if (ret)
2058 return ret;
2059
2060 mutex_lock(&mvm->mutex);
2061
2062 /* Send the beacon template */
2063 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2064 if (ret)
2065 goto out_unlock;
2066
2067 /*
2068 * Re-calculate the tsf id, as the master-slave relations depend on the
2069 * beacon interval, which was not known when the AP interface was added.
2070 */
2071 if (vif->type == NL80211_IFTYPE_AP)
2072 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2073
2074 mvmvif->ap_assoc_sta_count = 0;
2075
2076 /* Add the mac context */
2077 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2078 if (ret)
2079 goto out_unlock;
2080
2081 /* Perform the binding */
2082 ret = iwl_mvm_binding_add_vif(mvm, vif);
2083 if (ret)
2084 goto out_remove;
2085
2086 /* Send the bcast station. At this stage the TBTT and DTIM time events
2087 * are added and applied to the scheduler */
2088 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2089 if (ret)
2090 goto out_unbind;
2091
2092 /* must be set before quota calculations */
2093 mvmvif->ap_ibss_active = true;
2094
2095 /* power updated needs to be done before quotas */
2096 iwl_mvm_power_update_mac(mvm);
2097
2098 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2099 if (ret)
2100 goto out_quota_failed;
2101
2102 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2103 if (vif->p2p && mvm->p2p_device_vif)
2104 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2105
2106 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2107
2108 iwl_mvm_bt_coex_vif_change(mvm);
2109
2110 /* we don't support TDLS during DCM */
2111 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2112 iwl_mvm_teardown_tdls_peers(mvm);
2113
2114 goto out_unlock;
2115
2116 out_quota_failed:
2117 iwl_mvm_power_update_mac(mvm);
2118 mvmvif->ap_ibss_active = false;
2119 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2120 out_unbind:
2121 iwl_mvm_binding_remove_vif(mvm, vif);
2122 out_remove:
2123 iwl_mvm_mac_ctxt_remove(mvm, vif);
2124 out_unlock:
2125 mutex_unlock(&mvm->mutex);
2126 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2127 return ret;
2128 }
2129
2130 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2131 struct ieee80211_vif *vif)
2132 {
2133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2134 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2135
2136 iwl_mvm_prepare_mac_removal(mvm, vif);
2137
2138 mutex_lock(&mvm->mutex);
2139
2140 /* Handle AP stop while in CSA */
2141 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2142 iwl_mvm_remove_time_event(mvm, mvmvif,
2143 &mvmvif->time_event_data);
2144 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2145 mvmvif->csa_countdown = false;
2146 }
2147
2148 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2149 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2150 mvm->csa_tx_block_bcn_timeout = 0;
2151 }
2152
2153 mvmvif->ap_ibss_active = false;
2154 mvm->ap_last_beacon_gp2 = 0;
2155
2156 iwl_mvm_bt_coex_vif_change(mvm);
2157
2158 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2159
2160 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2161 if (vif->p2p && mvm->p2p_device_vif)
2162 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2163
2164 iwl_mvm_update_quotas(mvm, false, NULL);
2165 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2166 iwl_mvm_binding_remove_vif(mvm, vif);
2167
2168 iwl_mvm_power_update_mac(mvm);
2169
2170 iwl_mvm_mac_ctxt_remove(mvm, vif);
2171
2172 mutex_unlock(&mvm->mutex);
2173 }
2174
2175 static void
2176 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2177 struct ieee80211_vif *vif,
2178 struct ieee80211_bss_conf *bss_conf,
2179 u32 changes)
2180 {
2181 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2182
2183 /* Changes will be applied when the AP/IBSS is started */
2184 if (!mvmvif->ap_ibss_active)
2185 return;
2186
2187 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2188 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2189 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2190 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2191
2192 /* Need to send a new beacon template to the FW */
2193 if (changes & BSS_CHANGED_BEACON &&
2194 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2195 IWL_WARN(mvm, "Failed updating beacon data\n");
2196
2197 if (changes & BSS_CHANGED_TXPOWER) {
2198 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2199 bss_conf->txpower);
2200 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2201 }
2202 }
2203
2204 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2205 struct ieee80211_vif *vif,
2206 struct ieee80211_bss_conf *bss_conf,
2207 u32 changes)
2208 {
2209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2210
2211 /*
2212 * iwl_mvm_bss_info_changed_station() might call
2213 * iwl_mvm_protect_session(), which reads directly from
2214 * the device (the system time), so make sure it is available.
2215 */
2216 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2217 return;
2218
2219 mutex_lock(&mvm->mutex);
2220
2221 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2222 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2223
2224 switch (vif->type) {
2225 case NL80211_IFTYPE_STATION:
2226 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2227 break;
2228 case NL80211_IFTYPE_AP:
2229 case NL80211_IFTYPE_ADHOC:
2230 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2231 break;
2232 default:
2233 /* shouldn't happen */
2234 WARN_ON_ONCE(1);
2235 }
2236
2237 mutex_unlock(&mvm->mutex);
2238 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2239 }
2240
2241 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2242 struct ieee80211_vif *vif,
2243 struct ieee80211_scan_request *hw_req)
2244 {
2245 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2246 int ret;
2247
2248 if (hw_req->req.n_channels == 0 ||
2249 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2250 return -EINVAL;
2251
2252 mutex_lock(&mvm->mutex);
2253 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2254 mutex_unlock(&mvm->mutex);
2255
2256 return ret;
2257 }
2258
2259 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2260 struct ieee80211_vif *vif)
2261 {
2262 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2263
2264 mutex_lock(&mvm->mutex);
2265
2266 /* Due to a race condition, it's possible that mac80211 asks
2267 * us to stop a hw_scan when it's already stopped. This can
2268 * happen, for instance, if we stopped the scan ourselves,
2269 * called ieee80211_scan_completed() and the userspace called
2270 * cancel scan scan before ieee80211_scan_work() could run.
2271 * To handle that, simply return if the scan is not running.
2272 */
2273 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2274 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2275
2276 mutex_unlock(&mvm->mutex);
2277 }
2278
2279 static void
2280 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2281 struct ieee80211_sta *sta, u16 tids,
2282 int num_frames,
2283 enum ieee80211_frame_release_type reason,
2284 bool more_data)
2285 {
2286 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2287
2288 /* Called when we need to transmit (a) frame(s) from mac80211 */
2289
2290 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2291 tids, more_data, false);
2292 }
2293
2294 static void
2295 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2296 struct ieee80211_sta *sta, u16 tids,
2297 int num_frames,
2298 enum ieee80211_frame_release_type reason,
2299 bool more_data)
2300 {
2301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2302
2303 /* Called when we need to transmit (a) frame(s) from agg queue */
2304
2305 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2306 tids, more_data, true);
2307 }
2308
2309 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif,
2311 enum sta_notify_cmd cmd,
2312 struct ieee80211_sta *sta)
2313 {
2314 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2315 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2316 unsigned long txqs = 0, tids = 0;
2317 int tid;
2318
2319 spin_lock_bh(&mvmsta->lock);
2320 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2321 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2322
2323 if (tid_data->state != IWL_AGG_ON &&
2324 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2325 continue;
2326
2327 __set_bit(tid_data->txq_id, &txqs);
2328
2329 if (iwl_mvm_tid_queued(tid_data) == 0)
2330 continue;
2331
2332 __set_bit(tid, &tids);
2333 }
2334
2335 switch (cmd) {
2336 case STA_NOTIFY_SLEEP:
2337 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2338 ieee80211_sta_block_awake(hw, sta, true);
2339
2340 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2341 ieee80211_sta_set_buffered(sta, tid, true);
2342
2343 if (txqs)
2344 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2345 /*
2346 * The fw updates the STA to be asleep. Tx packets on the Tx
2347 * queues to this station will not be transmitted. The fw will
2348 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2349 */
2350 break;
2351 case STA_NOTIFY_AWAKE:
2352 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2353 break;
2354
2355 if (txqs)
2356 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2357 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2358 break;
2359 default:
2360 break;
2361 }
2362 spin_unlock_bh(&mvmsta->lock);
2363 }
2364
2365 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2366 struct ieee80211_vif *vif,
2367 struct ieee80211_sta *sta)
2368 {
2369 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2370 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2371
2372 /*
2373 * This is called before mac80211 does RCU synchronisation,
2374 * so here we already invalidate our internal RCU-protected
2375 * station pointer. The rest of the code will thus no longer
2376 * be able to find the station this way, and we don't rely
2377 * on further RCU synchronisation after the sta_state()
2378 * callback deleted the station.
2379 */
2380 mutex_lock(&mvm->mutex);
2381 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2382 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2383 ERR_PTR(-ENOENT));
2384
2385 mutex_unlock(&mvm->mutex);
2386 }
2387
2388 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2389 const u8 *bssid)
2390 {
2391 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2392 return;
2393
2394 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2395 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2396 return;
2397 }
2398
2399 if (!vif->p2p &&
2400 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2401 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2402 return;
2403 }
2404
2405 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2406 }
2407
2408 static void
2409 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2410 struct ieee80211_vif *vif, u8 *peer_addr,
2411 enum nl80211_tdls_operation action)
2412 {
2413 struct iwl_fw_dbg_trigger_tlv *trig;
2414 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2415
2416 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2417 return;
2418
2419 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2420 tdls_trig = (void *)trig->data;
2421 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2422 return;
2423
2424 if (!(tdls_trig->action_bitmap & BIT(action)))
2425 return;
2426
2427 if (tdls_trig->peer_mode &&
2428 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2429 return;
2430
2431 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2432 "TDLS event occurred, peer %pM, action %d",
2433 peer_addr, action);
2434 }
2435
2436 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2437 struct iwl_mvm_sta *mvm_sta)
2438 {
2439 struct iwl_mvm_tid_data *tid_data;
2440 struct sk_buff *skb;
2441 int i;
2442
2443 spin_lock_bh(&mvm_sta->lock);
2444 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2445 tid_data = &mvm_sta->tid_data[i];
2446 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2447 ieee80211_free_txskb(mvm->hw, skb);
2448 }
2449 spin_unlock_bh(&mvm_sta->lock);
2450 }
2451
2452 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2453 struct ieee80211_vif *vif,
2454 struct ieee80211_sta *sta,
2455 enum ieee80211_sta_state old_state,
2456 enum ieee80211_sta_state new_state)
2457 {
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2460 int ret;
2461
2462 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2463 sta->addr, old_state, new_state);
2464
2465 /* this would be a mac80211 bug ... but don't crash */
2466 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2467 return -EINVAL;
2468
2469 /* if a STA is being removed, reuse its ID */
2470 flush_work(&mvm->sta_drained_wk);
2471
2472 /*
2473 * If we are in a STA removal flow and in DQA mode:
2474 *
2475 * This is after the sync_rcu part, so the queues have already been
2476 * flushed. No more TXs on their way in mac80211's path, and no more in
2477 * the queues.
2478 * Also, we won't be getting any new TX frames for this station.
2479 * What we might have are deferred TX frames that need to be taken care
2480 * of.
2481 *
2482 * Drop any still-queued deferred-frame before removing the STA, and
2483 * make sure the worker is no longer handling frames for this STA.
2484 */
2485 if (old_state == IEEE80211_STA_NONE &&
2486 new_state == IEEE80211_STA_NOTEXIST &&
2487 iwl_mvm_is_dqa_supported(mvm)) {
2488 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2489
2490 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2491 flush_work(&mvm->add_stream_wk);
2492
2493 /*
2494 * No need to make sure deferred TX indication is off since the
2495 * worker will already remove it if it was on
2496 */
2497 }
2498
2499 mutex_lock(&mvm->mutex);
2500 if (old_state == IEEE80211_STA_NOTEXIST &&
2501 new_state == IEEE80211_STA_NONE) {
2502 /*
2503 * Firmware bug - it'll crash if the beacon interval is less
2504 * than 16. We can't avoid connecting at all, so refuse the
2505 * station state change, this will cause mac80211 to abandon
2506 * attempts to connect to this AP, and eventually wpa_s will
2507 * blacklist the AP...
2508 */
2509 if (vif->type == NL80211_IFTYPE_STATION &&
2510 vif->bss_conf.beacon_int < 16) {
2511 IWL_ERR(mvm,
2512 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2513 sta->addr, vif->bss_conf.beacon_int);
2514 ret = -EINVAL;
2515 goto out_unlock;
2516 }
2517
2518 if (sta->tdls &&
2519 (vif->p2p ||
2520 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2521 IWL_MVM_TDLS_STA_COUNT ||
2522 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2523 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2524 ret = -EBUSY;
2525 goto out_unlock;
2526 }
2527
2528 ret = iwl_mvm_add_sta(mvm, vif, sta);
2529 if (sta->tdls && ret == 0) {
2530 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2531 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2532 NL80211_TDLS_SETUP);
2533 }
2534 } else if (old_state == IEEE80211_STA_NONE &&
2535 new_state == IEEE80211_STA_AUTH) {
2536 /*
2537 * EBS may be disabled due to previous failures reported by FW.
2538 * Reset EBS status here assuming environment has been changed.
2539 */
2540 mvm->last_ebs_successful = true;
2541 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2542 ret = 0;
2543 } else if (old_state == IEEE80211_STA_AUTH &&
2544 new_state == IEEE80211_STA_ASSOC) {
2545 if (vif->type == NL80211_IFTYPE_AP) {
2546 mvmvif->ap_assoc_sta_count++;
2547 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2548 }
2549 ret = iwl_mvm_update_sta(mvm, vif, sta);
2550 if (ret == 0)
2551 iwl_mvm_rs_rate_init(mvm, sta,
2552 mvmvif->phy_ctxt->channel->band,
2553 true);
2554 } else if (old_state == IEEE80211_STA_ASSOC &&
2555 new_state == IEEE80211_STA_AUTHORIZED) {
2556
2557 /* we don't support TDLS during DCM */
2558 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2559 iwl_mvm_teardown_tdls_peers(mvm);
2560
2561 if (sta->tdls)
2562 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2563 NL80211_TDLS_ENABLE_LINK);
2564
2565 /* enable beacon filtering */
2566 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2567 ret = 0;
2568 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2569 new_state == IEEE80211_STA_ASSOC) {
2570 /* disable beacon filtering */
2571 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2572 ret = 0;
2573 } else if (old_state == IEEE80211_STA_ASSOC &&
2574 new_state == IEEE80211_STA_AUTH) {
2575 if (vif->type == NL80211_IFTYPE_AP) {
2576 mvmvif->ap_assoc_sta_count--;
2577 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2578 }
2579 ret = 0;
2580 } else if (old_state == IEEE80211_STA_AUTH &&
2581 new_state == IEEE80211_STA_NONE) {
2582 ret = 0;
2583 } else if (old_state == IEEE80211_STA_NONE &&
2584 new_state == IEEE80211_STA_NOTEXIST) {
2585 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2586 if (sta->tdls) {
2587 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2588 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2589 NL80211_TDLS_DISABLE_LINK);
2590 }
2591 } else {
2592 ret = -EIO;
2593 }
2594 out_unlock:
2595 mutex_unlock(&mvm->mutex);
2596
2597 if (sta->tdls && ret == 0) {
2598 if (old_state == IEEE80211_STA_NOTEXIST &&
2599 new_state == IEEE80211_STA_NONE)
2600 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2601 else if (old_state == IEEE80211_STA_NONE &&
2602 new_state == IEEE80211_STA_NOTEXIST)
2603 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2604 }
2605
2606 return ret;
2607 }
2608
2609 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2610 {
2611 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2612
2613 mvm->rts_threshold = value;
2614
2615 return 0;
2616 }
2617
2618 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2619 struct ieee80211_vif *vif,
2620 struct ieee80211_sta *sta, u32 changed)
2621 {
2622 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2623
2624 if (vif->type == NL80211_IFTYPE_STATION &&
2625 changed & IEEE80211_RC_NSS_CHANGED)
2626 iwl_mvm_sf_update(mvm, vif, false);
2627 }
2628
2629 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2630 struct ieee80211_vif *vif, u16 ac,
2631 const struct ieee80211_tx_queue_params *params)
2632 {
2633 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2634 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2635
2636 mvmvif->queue_params[ac] = *params;
2637
2638 /*
2639 * No need to update right away, we'll get BSS_CHANGED_QOS
2640 * The exception is P2P_DEVICE interface which needs immediate update.
2641 */
2642 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2643 int ret;
2644
2645 mutex_lock(&mvm->mutex);
2646 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2647 mutex_unlock(&mvm->mutex);
2648 return ret;
2649 }
2650 return 0;
2651 }
2652
2653 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2654 struct ieee80211_vif *vif)
2655 {
2656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2657 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2658 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2659
2660 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2661 return;
2662
2663 /*
2664 * iwl_mvm_protect_session() reads directly from the device
2665 * (the system time), so make sure it is available.
2666 */
2667 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2668 return;
2669
2670 mutex_lock(&mvm->mutex);
2671 /* Try really hard to protect the session and hear a beacon */
2672 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2673 mutex_unlock(&mvm->mutex);
2674
2675 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2676 }
2677
2678 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2679 struct ieee80211_vif *vif,
2680 struct cfg80211_sched_scan_request *req,
2681 struct ieee80211_scan_ies *ies)
2682 {
2683 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2684
2685 int ret;
2686
2687 mutex_lock(&mvm->mutex);
2688
2689 if (!vif->bss_conf.idle) {
2690 ret = -EBUSY;
2691 goto out;
2692 }
2693
2694 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2695
2696 out:
2697 mutex_unlock(&mvm->mutex);
2698 return ret;
2699 }
2700
2701 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2702 struct ieee80211_vif *vif)
2703 {
2704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2705 int ret;
2706
2707 mutex_lock(&mvm->mutex);
2708
2709 /* Due to a race condition, it's possible that mac80211 asks
2710 * us to stop a sched_scan when it's already stopped. This
2711 * can happen, for instance, if we stopped the scan ourselves,
2712 * called ieee80211_sched_scan_stopped() and the userspace called
2713 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2714 * could run. To handle this, simply return if the scan is
2715 * not running.
2716 */
2717 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2718 mutex_unlock(&mvm->mutex);
2719 return 0;
2720 }
2721
2722 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2723 mutex_unlock(&mvm->mutex);
2724 iwl_mvm_wait_for_async_handlers(mvm);
2725
2726 return ret;
2727 }
2728
2729 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2730 enum set_key_cmd cmd,
2731 struct ieee80211_vif *vif,
2732 struct ieee80211_sta *sta,
2733 struct ieee80211_key_conf *key)
2734 {
2735 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2736 struct iwl_mvm_sta *mvmsta;
2737 struct iwl_mvm_key_pn *ptk_pn;
2738 int keyidx = key->keyidx;
2739 int ret;
2740 u8 key_offset;
2741
2742 if (iwlwifi_mod_params.sw_crypto) {
2743 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2744 return -EOPNOTSUPP;
2745 }
2746
2747 switch (key->cipher) {
2748 case WLAN_CIPHER_SUITE_TKIP:
2749 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2750 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2751 break;
2752 case WLAN_CIPHER_SUITE_CCMP:
2753 case WLAN_CIPHER_SUITE_GCMP:
2754 case WLAN_CIPHER_SUITE_GCMP_256:
2755 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2756 break;
2757 case WLAN_CIPHER_SUITE_AES_CMAC:
2758 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2759 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2760 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2761 break;
2762 case WLAN_CIPHER_SUITE_WEP40:
2763 case WLAN_CIPHER_SUITE_WEP104:
2764 /* For non-client mode, only use WEP keys for TX as we probably
2765 * don't have a station yet anyway and would then have to keep
2766 * track of the keys, linking them to each of the clients/peers
2767 * as they appear. For now, don't do that, for performance WEP
2768 * offload doesn't really matter much, but we need it for some
2769 * other offload features in client mode.
2770 */
2771 if (vif->type != NL80211_IFTYPE_STATION)
2772 return 0;
2773 break;
2774 default:
2775 /* currently FW supports only one optional cipher scheme */
2776 if (hw->n_cipher_schemes &&
2777 hw->cipher_schemes->cipher == key->cipher)
2778 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2779 else
2780 return -EOPNOTSUPP;
2781 }
2782
2783 mutex_lock(&mvm->mutex);
2784
2785 switch (cmd) {
2786 case SET_KEY:
2787 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2788 vif->type == NL80211_IFTYPE_AP) && !sta) {
2789 /*
2790 * GTK on AP interface is a TX-only key, return 0;
2791 * on IBSS they're per-station and because we're lazy
2792 * we don't support them for RX, so do the same.
2793 * CMAC/GMAC in AP/IBSS modes must be done in software.
2794 */
2795 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2796 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2797 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2798 ret = -EOPNOTSUPP;
2799 else
2800 ret = 0;
2801 key->hw_key_idx = STA_KEY_IDX_INVALID;
2802 break;
2803 }
2804
2805 /* During FW restart, in order to restore the state as it was,
2806 * don't try to reprogram keys we previously failed for.
2807 */
2808 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2809 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2810 IWL_DEBUG_MAC80211(mvm,
2811 "skip invalid idx key programming during restart\n");
2812 ret = 0;
2813 break;
2814 }
2815
2816 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2817 sta && iwl_mvm_has_new_rx_api(mvm) &&
2818 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2819 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2820 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2821 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2822 struct ieee80211_key_seq seq;
2823 int tid, q;
2824
2825 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2826 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2827 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2828 mvm->trans->num_rx_queues *
2829 sizeof(ptk_pn->q[0]),
2830 GFP_KERNEL);
2831 if (!ptk_pn) {
2832 ret = -ENOMEM;
2833 break;
2834 }
2835
2836 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2837 ieee80211_get_key_rx_seq(key, tid, &seq);
2838 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2839 memcpy(ptk_pn->q[q].pn[tid],
2840 seq.ccmp.pn,
2841 IEEE80211_CCMP_PN_LEN);
2842 }
2843
2844 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2845 }
2846
2847 /* in HW restart reuse the index, otherwise request a new one */
2848 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2849 key_offset = key->hw_key_idx;
2850 else
2851 key_offset = STA_KEY_IDX_INVALID;
2852
2853 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2854 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2855 if (ret) {
2856 IWL_WARN(mvm, "set key failed\n");
2857 /*
2858 * can't add key for RX, but we don't need it
2859 * in the device for TX so still return 0
2860 */
2861 key->hw_key_idx = STA_KEY_IDX_INVALID;
2862 ret = 0;
2863 }
2864
2865 break;
2866 case DISABLE_KEY:
2867 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2868 ret = 0;
2869 break;
2870 }
2871
2872 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2873 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2874 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2875 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2876 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2877 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2878 ptk_pn = rcu_dereference_protected(
2879 mvmsta->ptk_pn[keyidx],
2880 lockdep_is_held(&mvm->mutex));
2881 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2882 if (ptk_pn)
2883 kfree_rcu(ptk_pn, rcu_head);
2884 }
2885
2886 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2887 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2888 break;
2889 default:
2890 ret = -EINVAL;
2891 }
2892
2893 mutex_unlock(&mvm->mutex);
2894 return ret;
2895 }
2896
2897 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2898 struct ieee80211_vif *vif,
2899 struct ieee80211_key_conf *keyconf,
2900 struct ieee80211_sta *sta,
2901 u32 iv32, u16 *phase1key)
2902 {
2903 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2904
2905 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2906 return;
2907
2908 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2909 }
2910
2911
2912 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2913 struct iwl_rx_packet *pkt, void *data)
2914 {
2915 struct iwl_mvm *mvm =
2916 container_of(notif_wait, struct iwl_mvm, notif_wait);
2917 struct iwl_hs20_roc_res *resp;
2918 int resp_len = iwl_rx_packet_payload_len(pkt);
2919 struct iwl_mvm_time_event_data *te_data = data;
2920
2921 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2922 return true;
2923
2924 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2925 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2926 return true;
2927 }
2928
2929 resp = (void *)pkt->data;
2930
2931 IWL_DEBUG_TE(mvm,
2932 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2933 resp->status, resp->event_unique_id);
2934
2935 te_data->uid = le32_to_cpu(resp->event_unique_id);
2936 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2937 te_data->uid);
2938
2939 spin_lock_bh(&mvm->time_event_lock);
2940 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2941 spin_unlock_bh(&mvm->time_event_lock);
2942
2943 return true;
2944 }
2945
2946 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2947 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2948 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2949 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2950 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2951 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2952 struct ieee80211_channel *channel,
2953 struct ieee80211_vif *vif,
2954 int duration)
2955 {
2956 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2957 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2958 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2959 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2960 struct iwl_notification_wait wait_time_event;
2961 u32 dtim_interval = vif->bss_conf.dtim_period *
2962 vif->bss_conf.beacon_int;
2963 u32 req_dur, delay;
2964 struct iwl_hs20_roc_req aux_roc_req = {
2965 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2966 .id_and_color =
2967 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2968 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2969 /* Set the channel info data */
2970 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
2971 PHY_BAND_24 : PHY_BAND_5,
2972 .channel_info.channel = channel->hw_value,
2973 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2974 /* Set the time and duration */
2975 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2976 };
2977
2978 delay = AUX_ROC_MIN_DELAY;
2979 req_dur = MSEC_TO_TU(duration);
2980
2981 /*
2982 * If we are associated we want the delay time to be at least one
2983 * dtim interval so that the FW can wait until after the DTIM and
2984 * then start the time event, this will potentially allow us to
2985 * remain off-channel for the max duration.
2986 * Since we want to use almost a whole dtim interval we would also
2987 * like the delay to be for 2-3 dtim intervals, in case there are
2988 * other time events with higher priority.
2989 */
2990 if (vif->bss_conf.assoc) {
2991 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2992 /* We cannot remain off-channel longer than the DTIM interval */
2993 if (dtim_interval <= req_dur) {
2994 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2995 if (req_dur <= AUX_ROC_MIN_DURATION)
2996 req_dur = dtim_interval -
2997 AUX_ROC_MIN_SAFETY_BUFFER;
2998 }
2999 }
3000
3001 aux_roc_req.duration = cpu_to_le32(req_dur);
3002 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3003
3004 IWL_DEBUG_TE(mvm,
3005 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3006 channel->hw_value, req_dur, duration, delay,
3007 dtim_interval);
3008 /* Set the node address */
3009 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3010
3011 lockdep_assert_held(&mvm->mutex);
3012
3013 spin_lock_bh(&mvm->time_event_lock);
3014
3015 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3016 spin_unlock_bh(&mvm->time_event_lock);
3017 return -EIO;
3018 }
3019
3020 te_data->vif = vif;
3021 te_data->duration = duration;
3022 te_data->id = HOT_SPOT_CMD;
3023
3024 spin_unlock_bh(&mvm->time_event_lock);
3025
3026 /*
3027 * Use a notification wait, which really just processes the
3028 * command response and doesn't wait for anything, in order
3029 * to be able to process the response and get the UID inside
3030 * the RX path. Using CMD_WANT_SKB doesn't work because it
3031 * stores the buffer and then wakes up this thread, by which
3032 * time another notification (that the time event started)
3033 * might already be processed unsuccessfully.
3034 */
3035 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3036 time_event_response,
3037 ARRAY_SIZE(time_event_response),
3038 iwl_mvm_rx_aux_roc, te_data);
3039
3040 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3041 &aux_roc_req);
3042
3043 if (res) {
3044 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3045 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3046 goto out_clear_te;
3047 }
3048
3049 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3050 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3051 /* should never fail */
3052 WARN_ON_ONCE(res);
3053
3054 if (res) {
3055 out_clear_te:
3056 spin_lock_bh(&mvm->time_event_lock);
3057 iwl_mvm_te_clear_data(mvm, te_data);
3058 spin_unlock_bh(&mvm->time_event_lock);
3059 }
3060
3061 return res;
3062 }
3063
3064 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3065 struct ieee80211_vif *vif,
3066 struct ieee80211_channel *channel,
3067 int duration,
3068 enum ieee80211_roc_type type)
3069 {
3070 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3071 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3072 struct cfg80211_chan_def chandef;
3073 struct iwl_mvm_phy_ctxt *phy_ctxt;
3074 int ret, i;
3075
3076 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3077 duration, type);
3078
3079 flush_work(&mvm->roc_done_wk);
3080
3081 mutex_lock(&mvm->mutex);
3082
3083 switch (vif->type) {
3084 case NL80211_IFTYPE_STATION:
3085 if (fw_has_capa(&mvm->fw->ucode_capa,
3086 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3087 /* Use aux roc framework (HS20) */
3088 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3089 vif, duration);
3090 goto out_unlock;
3091 }
3092 IWL_ERR(mvm, "hotspot not supported\n");
3093 ret = -EINVAL;
3094 goto out_unlock;
3095 case NL80211_IFTYPE_P2P_DEVICE:
3096 /* handle below */
3097 break;
3098 default:
3099 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3100 ret = -EINVAL;
3101 goto out_unlock;
3102 }
3103
3104 for (i = 0; i < NUM_PHY_CTX; i++) {
3105 phy_ctxt = &mvm->phy_ctxts[i];
3106 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3107 continue;
3108
3109 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3110 /*
3111 * Unbind the P2P_DEVICE from the current PHY context,
3112 * and if the PHY context is not used remove it.
3113 */
3114 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3115 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3116 goto out_unlock;
3117
3118 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3119
3120 /* Bind the P2P_DEVICE to the current PHY Context */
3121 mvmvif->phy_ctxt = phy_ctxt;
3122
3123 ret = iwl_mvm_binding_add_vif(mvm, vif);
3124 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3125 goto out_unlock;
3126
3127 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3128 goto schedule_time_event;
3129 }
3130 }
3131
3132 /* Need to update the PHY context only if the ROC channel changed */
3133 if (channel == mvmvif->phy_ctxt->channel)
3134 goto schedule_time_event;
3135
3136 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3137
3138 /*
3139 * Change the PHY context configuration as it is currently referenced
3140 * only by the P2P Device MAC
3141 */
3142 if (mvmvif->phy_ctxt->ref == 1) {
3143 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3144 &chandef, 1, 1);
3145 if (ret)
3146 goto out_unlock;
3147 } else {
3148 /*
3149 * The PHY context is shared with other MACs. Need to remove the
3150 * P2P Device from the binding, allocate an new PHY context and
3151 * create a new binding
3152 */
3153 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3154 if (!phy_ctxt) {
3155 ret = -ENOSPC;
3156 goto out_unlock;
3157 }
3158
3159 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3160 1, 1);
3161 if (ret) {
3162 IWL_ERR(mvm, "Failed to change PHY context\n");
3163 goto out_unlock;
3164 }
3165
3166 /* Unbind the P2P_DEVICE from the current PHY context */
3167 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3168 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3169 goto out_unlock;
3170
3171 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3172
3173 /* Bind the P2P_DEVICE to the new allocated PHY context */
3174 mvmvif->phy_ctxt = phy_ctxt;
3175
3176 ret = iwl_mvm_binding_add_vif(mvm, vif);
3177 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3178 goto out_unlock;
3179
3180 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3181 }
3182
3183 schedule_time_event:
3184 /* Schedule the time events */
3185 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3186
3187 out_unlock:
3188 mutex_unlock(&mvm->mutex);
3189 IWL_DEBUG_MAC80211(mvm, "leave\n");
3190 return ret;
3191 }
3192
3193 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3194 {
3195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3196
3197 IWL_DEBUG_MAC80211(mvm, "enter\n");
3198
3199 mutex_lock(&mvm->mutex);
3200 iwl_mvm_stop_roc(mvm);
3201 mutex_unlock(&mvm->mutex);
3202
3203 IWL_DEBUG_MAC80211(mvm, "leave\n");
3204 return 0;
3205 }
3206
3207 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3208 struct ieee80211_chanctx_conf *ctx)
3209 {
3210 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3211 struct iwl_mvm_phy_ctxt *phy_ctxt;
3212 int ret;
3213
3214 lockdep_assert_held(&mvm->mutex);
3215
3216 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3217
3218 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3219 if (!phy_ctxt) {
3220 ret = -ENOSPC;
3221 goto out;
3222 }
3223
3224 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3225 ctx->rx_chains_static,
3226 ctx->rx_chains_dynamic);
3227 if (ret) {
3228 IWL_ERR(mvm, "Failed to add PHY context\n");
3229 goto out;
3230 }
3231
3232 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3233 *phy_ctxt_id = phy_ctxt->id;
3234 out:
3235 return ret;
3236 }
3237
3238 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3239 struct ieee80211_chanctx_conf *ctx)
3240 {
3241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3242 int ret;
3243
3244 mutex_lock(&mvm->mutex);
3245 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3246 mutex_unlock(&mvm->mutex);
3247
3248 return ret;
3249 }
3250
3251 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3252 struct ieee80211_chanctx_conf *ctx)
3253 {
3254 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3255 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3256
3257 lockdep_assert_held(&mvm->mutex);
3258
3259 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3260 }
3261
3262 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3263 struct ieee80211_chanctx_conf *ctx)
3264 {
3265 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3266
3267 mutex_lock(&mvm->mutex);
3268 __iwl_mvm_remove_chanctx(mvm, ctx);
3269 mutex_unlock(&mvm->mutex);
3270 }
3271
3272 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3273 struct ieee80211_chanctx_conf *ctx,
3274 u32 changed)
3275 {
3276 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3277 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3278 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3279
3280 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3281 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3282 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3283 IEEE80211_CHANCTX_CHANGE_RADAR |
3284 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3285 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3286 phy_ctxt->ref, changed))
3287 return;
3288
3289 mutex_lock(&mvm->mutex);
3290 iwl_mvm_bt_coex_vif_change(mvm);
3291 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3292 ctx->rx_chains_static,
3293 ctx->rx_chains_dynamic);
3294 mutex_unlock(&mvm->mutex);
3295 }
3296
3297 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3298 struct ieee80211_vif *vif,
3299 struct ieee80211_chanctx_conf *ctx,
3300 bool switching_chanctx)
3301 {
3302 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3303 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3305 int ret;
3306
3307 lockdep_assert_held(&mvm->mutex);
3308
3309 mvmvif->phy_ctxt = phy_ctxt;
3310
3311 switch (vif->type) {
3312 case NL80211_IFTYPE_AP:
3313 /* only needed if we're switching chanctx (i.e. during CSA) */
3314 if (switching_chanctx) {
3315 mvmvif->ap_ibss_active = true;
3316 break;
3317 }
3318 case NL80211_IFTYPE_ADHOC:
3319 /*
3320 * The AP binding flow is handled as part of the start_ap flow
3321 * (in bss_info_changed), similarly for IBSS.
3322 */
3323 ret = 0;
3324 goto out;
3325 case NL80211_IFTYPE_STATION:
3326 break;
3327 case NL80211_IFTYPE_MONITOR:
3328 /* always disable PS when a monitor interface is active */
3329 mvmvif->ps_disabled = true;
3330 break;
3331 default:
3332 ret = -EINVAL;
3333 goto out;
3334 }
3335
3336 ret = iwl_mvm_binding_add_vif(mvm, vif);
3337 if (ret)
3338 goto out;
3339
3340 /*
3341 * Power state must be updated before quotas,
3342 * otherwise fw will complain.
3343 */
3344 iwl_mvm_power_update_mac(mvm);
3345
3346 /* Setting the quota at this stage is only required for monitor
3347 * interfaces. For the other types, the bss_info changed flow
3348 * will handle quota settings.
3349 */
3350 if (vif->type == NL80211_IFTYPE_MONITOR) {
3351 mvmvif->monitor_active = true;
3352 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3353 if (ret)
3354 goto out_remove_binding;
3355
3356 ret = iwl_mvm_add_snif_sta(mvm, vif);
3357 if (ret)
3358 goto out_remove_binding;
3359
3360 }
3361
3362 /* Handle binding during CSA */
3363 if (vif->type == NL80211_IFTYPE_AP) {
3364 iwl_mvm_update_quotas(mvm, false, NULL);
3365 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3366 }
3367
3368 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3369 u32 duration = 2 * vif->bss_conf.beacon_int;
3370
3371 /* iwl_mvm_protect_session() reads directly from the
3372 * device (the system time), so make sure it is
3373 * available.
3374 */
3375 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3376 if (ret)
3377 goto out_remove_binding;
3378
3379 /* Protect the session to make sure we hear the first
3380 * beacon on the new channel.
3381 */
3382 iwl_mvm_protect_session(mvm, vif, duration, duration,
3383 vif->bss_conf.beacon_int / 2,
3384 true);
3385
3386 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3387
3388 iwl_mvm_update_quotas(mvm, false, NULL);
3389 }
3390
3391 goto out;
3392
3393 out_remove_binding:
3394 iwl_mvm_binding_remove_vif(mvm, vif);
3395 iwl_mvm_power_update_mac(mvm);
3396 out:
3397 if (ret)
3398 mvmvif->phy_ctxt = NULL;
3399 return ret;
3400 }
3401 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3402 struct ieee80211_vif *vif,
3403 struct ieee80211_chanctx_conf *ctx)
3404 {
3405 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3406 int ret;
3407
3408 mutex_lock(&mvm->mutex);
3409 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3410 mutex_unlock(&mvm->mutex);
3411
3412 return ret;
3413 }
3414
3415 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3416 struct ieee80211_vif *vif,
3417 struct ieee80211_chanctx_conf *ctx,
3418 bool switching_chanctx)
3419 {
3420 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3421 struct ieee80211_vif *disabled_vif = NULL;
3422
3423 lockdep_assert_held(&mvm->mutex);
3424
3425 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3426
3427 switch (vif->type) {
3428 case NL80211_IFTYPE_ADHOC:
3429 goto out;
3430 case NL80211_IFTYPE_MONITOR:
3431 mvmvif->monitor_active = false;
3432 mvmvif->ps_disabled = false;
3433 iwl_mvm_rm_snif_sta(mvm, vif);
3434 break;
3435 case NL80211_IFTYPE_AP:
3436 /* This part is triggered only during CSA */
3437 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3438 goto out;
3439
3440 mvmvif->csa_countdown = false;
3441
3442 /* Set CS bit on all the stations */
3443 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3444
3445 /* Save blocked iface, the timeout is set on the next beacon */
3446 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3447
3448 mvmvif->ap_ibss_active = false;
3449 break;
3450 case NL80211_IFTYPE_STATION:
3451 if (!switching_chanctx)
3452 break;
3453
3454 disabled_vif = vif;
3455
3456 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3457 break;
3458 default:
3459 break;
3460 }
3461
3462 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3463 iwl_mvm_binding_remove_vif(mvm, vif);
3464
3465 out:
3466 mvmvif->phy_ctxt = NULL;
3467 iwl_mvm_power_update_mac(mvm);
3468 }
3469
3470 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3471 struct ieee80211_vif *vif,
3472 struct ieee80211_chanctx_conf *ctx)
3473 {
3474 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3475
3476 mutex_lock(&mvm->mutex);
3477 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3478 mutex_unlock(&mvm->mutex);
3479 }
3480
3481 static int
3482 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3483 struct ieee80211_vif_chanctx_switch *vifs)
3484 {
3485 int ret;
3486
3487 mutex_lock(&mvm->mutex);
3488 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3489 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3490
3491 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3492 if (ret) {
3493 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3494 goto out_reassign;
3495 }
3496
3497 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3498 true);
3499 if (ret) {
3500 IWL_ERR(mvm,
3501 "failed to assign new_ctx during channel switch\n");
3502 goto out_remove;
3503 }
3504
3505 /* we don't support TDLS during DCM - can be caused by channel switch */
3506 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3507 iwl_mvm_teardown_tdls_peers(mvm);
3508
3509 goto out;
3510
3511 out_remove:
3512 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3513
3514 out_reassign:
3515 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3516 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3517 goto out_restart;
3518 }
3519
3520 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3521 true)) {
3522 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3523 goto out_restart;
3524 }
3525
3526 goto out;
3527
3528 out_restart:
3529 /* things keep failing, better restart the hw */
3530 iwl_mvm_nic_restart(mvm, false);
3531
3532 out:
3533 mutex_unlock(&mvm->mutex);
3534
3535 return ret;
3536 }
3537
3538 static int
3539 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3540 struct ieee80211_vif_chanctx_switch *vifs)
3541 {
3542 int ret;
3543
3544 mutex_lock(&mvm->mutex);
3545 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3546
3547 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3548 true);
3549 if (ret) {
3550 IWL_ERR(mvm,
3551 "failed to assign new_ctx during channel switch\n");
3552 goto out_reassign;
3553 }
3554
3555 goto out;
3556
3557 out_reassign:
3558 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3559 true)) {
3560 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3561 goto out_restart;
3562 }
3563
3564 goto out;
3565
3566 out_restart:
3567 /* things keep failing, better restart the hw */
3568 iwl_mvm_nic_restart(mvm, false);
3569
3570 out:
3571 mutex_unlock(&mvm->mutex);
3572
3573 return ret;
3574 }
3575
3576 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3577 struct ieee80211_vif_chanctx_switch *vifs,
3578 int n_vifs,
3579 enum ieee80211_chanctx_switch_mode mode)
3580 {
3581 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3582 int ret;
3583
3584 /* we only support a single-vif right now */
3585 if (n_vifs > 1)
3586 return -EOPNOTSUPP;
3587
3588 switch (mode) {
3589 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3590 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3591 break;
3592 case CHANCTX_SWMODE_REASSIGN_VIF:
3593 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3594 break;
3595 default:
3596 ret = -EOPNOTSUPP;
3597 break;
3598 }
3599
3600 return ret;
3601 }
3602
3603 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3604 struct ieee80211_sta *sta,
3605 bool set)
3606 {
3607 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3608 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3609
3610 if (!mvm_sta || !mvm_sta->vif) {
3611 IWL_ERR(mvm, "Station is not associated to a vif\n");
3612 return -EINVAL;
3613 }
3614
3615 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3616 }
3617
3618 #ifdef CONFIG_NL80211_TESTMODE
3619 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3620 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3621 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3622 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3623 };
3624
3625 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3626 struct ieee80211_vif *vif,
3627 void *data, int len)
3628 {
3629 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3630 int err;
3631 u32 noa_duration;
3632
3633 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3634 if (err)
3635 return err;
3636
3637 if (!tb[IWL_MVM_TM_ATTR_CMD])
3638 return -EINVAL;
3639
3640 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3641 case IWL_MVM_TM_CMD_SET_NOA:
3642 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3643 !vif->bss_conf.enable_beacon ||
3644 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3645 return -EINVAL;
3646
3647 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3648 if (noa_duration >= vif->bss_conf.beacon_int)
3649 return -EINVAL;
3650
3651 mvm->noa_duration = noa_duration;
3652 mvm->noa_vif = vif;
3653
3654 return iwl_mvm_update_quotas(mvm, false, NULL);
3655 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3656 /* must be associated client vif - ignore authorized */
3657 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3658 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3659 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3660 return -EINVAL;
3661
3662 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3663 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3664 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3665 }
3666
3667 return -EOPNOTSUPP;
3668 }
3669
3670 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3671 struct ieee80211_vif *vif,
3672 void *data, int len)
3673 {
3674 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3675 int err;
3676
3677 mutex_lock(&mvm->mutex);
3678 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3679 mutex_unlock(&mvm->mutex);
3680
3681 return err;
3682 }
3683 #endif
3684
3685 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3686 struct ieee80211_vif *vif,
3687 struct ieee80211_channel_switch *chsw)
3688 {
3689 /* By implementing this operation, we prevent mac80211 from
3690 * starting its own channel switch timer, so that we can call
3691 * ieee80211_chswitch_done() ourselves at the right time
3692 * (which is when the absence time event starts).
3693 */
3694
3695 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3696 "dummy channel switch op\n");
3697 }
3698
3699 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3700 struct ieee80211_vif *vif,
3701 struct ieee80211_channel_switch *chsw)
3702 {
3703 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3704 struct ieee80211_vif *csa_vif;
3705 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3706 u32 apply_time;
3707 int ret;
3708
3709 mutex_lock(&mvm->mutex);
3710
3711 mvmvif->csa_failed = false;
3712
3713 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3714 chsw->chandef.center_freq1);
3715
3716 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3717
3718 switch (vif->type) {
3719 case NL80211_IFTYPE_AP:
3720 csa_vif =
3721 rcu_dereference_protected(mvm->csa_vif,
3722 lockdep_is_held(&mvm->mutex));
3723 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3724 "Another CSA is already in progress")) {
3725 ret = -EBUSY;
3726 goto out_unlock;
3727 }
3728
3729 /* we still didn't unblock tx. prevent new CS meanwhile */
3730 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3731 lockdep_is_held(&mvm->mutex))) {
3732 ret = -EBUSY;
3733 goto out_unlock;
3734 }
3735
3736 rcu_assign_pointer(mvm->csa_vif, vif);
3737
3738 if (WARN_ONCE(mvmvif->csa_countdown,
3739 "Previous CSA countdown didn't complete")) {
3740 ret = -EBUSY;
3741 goto out_unlock;
3742 }
3743
3744 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3745
3746 break;
3747 case NL80211_IFTYPE_STATION:
3748 if (mvmvif->lqm_active)
3749 iwl_mvm_send_lqm_cmd(vif,
3750 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3751 0, 0);
3752
3753 /* Schedule the time event to a bit before beacon 1,
3754 * to make sure we're in the new channel when the
3755 * GO/AP arrives.
3756 */
3757 apply_time = chsw->device_timestamp +
3758 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3759 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3760
3761 if (chsw->block_tx)
3762 iwl_mvm_csa_client_absent(mvm, vif);
3763
3764 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3765 apply_time);
3766 if (mvmvif->bf_data.bf_enabled) {
3767 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3768 if (ret)
3769 goto out_unlock;
3770 }
3771
3772 break;
3773 default:
3774 break;
3775 }
3776
3777 mvmvif->ps_disabled = true;
3778
3779 ret = iwl_mvm_power_update_ps(mvm);
3780 if (ret)
3781 goto out_unlock;
3782
3783 /* we won't be on this channel any longer */
3784 iwl_mvm_teardown_tdls_peers(mvm);
3785
3786 out_unlock:
3787 mutex_unlock(&mvm->mutex);
3788
3789 return ret;
3790 }
3791
3792 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3793 struct ieee80211_vif *vif)
3794 {
3795 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3797 int ret;
3798
3799 mutex_lock(&mvm->mutex);
3800
3801 if (mvmvif->csa_failed) {
3802 mvmvif->csa_failed = false;
3803 ret = -EIO;
3804 goto out_unlock;
3805 }
3806
3807 if (vif->type == NL80211_IFTYPE_STATION) {
3808 struct iwl_mvm_sta *mvmsta;
3809
3810 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3811 mvmvif->ap_sta_id);
3812
3813 if (WARN_ON(!mvmsta)) {
3814 ret = -EIO;
3815 goto out_unlock;
3816 }
3817
3818 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3819
3820 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3821
3822 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3823 if (ret)
3824 goto out_unlock;
3825
3826 iwl_mvm_stop_session_protection(mvm, vif);
3827 }
3828
3829 mvmvif->ps_disabled = false;
3830
3831 ret = iwl_mvm_power_update_ps(mvm);
3832
3833 out_unlock:
3834 mutex_unlock(&mvm->mutex);
3835
3836 return ret;
3837 }
3838
3839 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3840 struct ieee80211_vif *vif, u32 queues, bool drop)
3841 {
3842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3843 struct iwl_mvm_vif *mvmvif;
3844 struct iwl_mvm_sta *mvmsta;
3845 struct ieee80211_sta *sta;
3846 int i;
3847 u32 msk = 0;
3848
3849 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3850 return;
3851
3852 /* Make sure we're done with the deferred traffic before flushing */
3853 if (iwl_mvm_is_dqa_supported(mvm))
3854 flush_work(&mvm->add_stream_wk);
3855
3856 mutex_lock(&mvm->mutex);
3857 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3858
3859 /* flush the AP-station and all TDLS peers */
3860 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3861 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3862 lockdep_is_held(&mvm->mutex));
3863 if (IS_ERR_OR_NULL(sta))
3864 continue;
3865
3866 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3867 if (mvmsta->vif != vif)
3868 continue;
3869
3870 /* make sure only TDLS peers or the AP are flushed */
3871 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3872
3873 msk |= mvmsta->tfd_queue_msk;
3874 }
3875
3876 if (drop) {
3877 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3878 IWL_ERR(mvm, "flush request fail\n");
3879 mutex_unlock(&mvm->mutex);
3880 } else {
3881 mutex_unlock(&mvm->mutex);
3882
3883 /* this can take a while, and we may need/want other operations
3884 * to succeed while doing this, so do it without the mutex held
3885 */
3886 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3887 }
3888 }
3889
3890 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3891 struct survey_info *survey)
3892 {
3893 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3894 int ret;
3895
3896 memset(survey, 0, sizeof(*survey));
3897
3898 /* only support global statistics right now */
3899 if (idx != 0)
3900 return -ENOENT;
3901
3902 if (!fw_has_capa(&mvm->fw->ucode_capa,
3903 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3904 return -ENOENT;
3905
3906 mutex_lock(&mvm->mutex);
3907
3908 if (mvm->ucode_loaded) {
3909 ret = iwl_mvm_request_statistics(mvm, false);
3910 if (ret)
3911 goto out;
3912 }
3913
3914 survey->filled = SURVEY_INFO_TIME |
3915 SURVEY_INFO_TIME_RX |
3916 SURVEY_INFO_TIME_TX |
3917 SURVEY_INFO_TIME_SCAN;
3918 survey->time = mvm->accu_radio_stats.on_time_rf +
3919 mvm->radio_stats.on_time_rf;
3920 do_div(survey->time, USEC_PER_MSEC);
3921
3922 survey->time_rx = mvm->accu_radio_stats.rx_time +
3923 mvm->radio_stats.rx_time;
3924 do_div(survey->time_rx, USEC_PER_MSEC);
3925
3926 survey->time_tx = mvm->accu_radio_stats.tx_time +
3927 mvm->radio_stats.tx_time;
3928 do_div(survey->time_tx, USEC_PER_MSEC);
3929
3930 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3931 mvm->radio_stats.on_time_scan;
3932 do_div(survey->time_scan, USEC_PER_MSEC);
3933
3934 ret = 0;
3935 out:
3936 mutex_unlock(&mvm->mutex);
3937 return ret;
3938 }
3939
3940 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3941 struct ieee80211_vif *vif,
3942 struct ieee80211_sta *sta,
3943 struct station_info *sinfo)
3944 {
3945 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3946 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3947 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3948
3949 if (mvmsta->avg_energy) {
3950 sinfo->signal_avg = mvmsta->avg_energy;
3951 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
3952 }
3953
3954 if (!fw_has_capa(&mvm->fw->ucode_capa,
3955 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3956 return;
3957
3958 /* if beacon filtering isn't on mac80211 does it anyway */
3959 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3960 return;
3961
3962 if (!vif->bss_conf.assoc)
3963 return;
3964
3965 mutex_lock(&mvm->mutex);
3966
3967 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3968 goto unlock;
3969
3970 if (iwl_mvm_request_statistics(mvm, false))
3971 goto unlock;
3972
3973 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3974 mvmvif->beacon_stats.accu_num_beacons;
3975 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3976 if (mvmvif->beacon_stats.avg_signal) {
3977 /* firmware only reports a value after RXing a few beacons */
3978 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3979 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3980 }
3981 unlock:
3982 mutex_unlock(&mvm->mutex);
3983 }
3984
3985 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3986 struct ieee80211_vif *vif,
3987 const struct ieee80211_event *event)
3988 {
3989 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3990 do { \
3991 if ((_cnt) && --(_cnt)) \
3992 break; \
3993 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3994 } while (0)
3995
3996 struct iwl_fw_dbg_trigger_tlv *trig;
3997 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3998
3999 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4000 return;
4001
4002 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4003 trig_mlme = (void *)trig->data;
4004 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4005 return;
4006
4007 if (event->u.mlme.data == ASSOC_EVENT) {
4008 if (event->u.mlme.status == MLME_DENIED)
4009 CHECK_MLME_TRIGGER(mvm, trig, buf,
4010 trig_mlme->stop_assoc_denied,
4011 "DENIED ASSOC: reason %d",
4012 event->u.mlme.reason);
4013 else if (event->u.mlme.status == MLME_TIMEOUT)
4014 CHECK_MLME_TRIGGER(mvm, trig, buf,
4015 trig_mlme->stop_assoc_timeout,
4016 "ASSOC TIMEOUT");
4017 } else if (event->u.mlme.data == AUTH_EVENT) {
4018 if (event->u.mlme.status == MLME_DENIED)
4019 CHECK_MLME_TRIGGER(mvm, trig, buf,
4020 trig_mlme->stop_auth_denied,
4021 "DENIED AUTH: reason %d",
4022 event->u.mlme.reason);
4023 else if (event->u.mlme.status == MLME_TIMEOUT)
4024 CHECK_MLME_TRIGGER(mvm, trig, buf,
4025 trig_mlme->stop_auth_timeout,
4026 "AUTH TIMEOUT");
4027 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4028 CHECK_MLME_TRIGGER(mvm, trig, buf,
4029 trig_mlme->stop_rx_deauth,
4030 "DEAUTH RX %d", event->u.mlme.reason);
4031 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4032 CHECK_MLME_TRIGGER(mvm, trig, buf,
4033 trig_mlme->stop_tx_deauth,
4034 "DEAUTH TX %d", event->u.mlme.reason);
4035 }
4036 #undef CHECK_MLME_TRIGGER
4037 }
4038
4039 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4040 struct ieee80211_vif *vif,
4041 const struct ieee80211_event *event)
4042 {
4043 struct iwl_fw_dbg_trigger_tlv *trig;
4044 struct iwl_fw_dbg_trigger_ba *ba_trig;
4045
4046 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4047 return;
4048
4049 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4050 ba_trig = (void *)trig->data;
4051 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4052 return;
4053
4054 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4055 return;
4056
4057 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4058 "BAR received from %pM, tid %d, ssn %d",
4059 event->u.ba.sta->addr, event->u.ba.tid,
4060 event->u.ba.ssn);
4061 }
4062
4063 static void
4064 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4065 struct ieee80211_vif *vif,
4066 const struct ieee80211_event *event)
4067 {
4068 struct iwl_fw_dbg_trigger_tlv *trig;
4069 struct iwl_fw_dbg_trigger_ba *ba_trig;
4070
4071 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4072 return;
4073
4074 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4075 ba_trig = (void *)trig->data;
4076 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4077 return;
4078
4079 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4080 return;
4081
4082 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4083 "Frame from %pM timed out, tid %d",
4084 event->u.ba.sta->addr, event->u.ba.tid);
4085 }
4086
4087 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4088 struct ieee80211_vif *vif,
4089 const struct ieee80211_event *event)
4090 {
4091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4092
4093 switch (event->type) {
4094 case MLME_EVENT:
4095 iwl_mvm_event_mlme_callback(mvm, vif, event);
4096 break;
4097 case BAR_RX_EVENT:
4098 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4099 break;
4100 case BA_FRAME_TIMEOUT:
4101 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4102 break;
4103 default:
4104 break;
4105 }
4106 }
4107
4108 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4109 struct iwl_mvm_internal_rxq_notif *notif,
4110 u32 size)
4111 {
4112 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(notif_waitq);
4113 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4114 int ret;
4115
4116 lockdep_assert_held(&mvm->mutex);
4117
4118 if (!iwl_mvm_has_new_rx_api(mvm))
4119 return;
4120
4121 notif->cookie = mvm->queue_sync_cookie;
4122
4123 if (notif->sync)
4124 atomic_set(&mvm->queue_sync_counter,
4125 mvm->trans->num_rx_queues);
4126
4127 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4128 if (ret) {
4129 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4130 goto out;
4131 }
4132
4133 if (notif->sync)
4134 ret = wait_event_timeout(notif_waitq,
4135 atomic_read(&mvm->queue_sync_counter) == 0,
4136 HZ);
4137 WARN_ON_ONCE(!ret);
4138
4139 out:
4140 atomic_set(&mvm->queue_sync_counter, 0);
4141 mvm->queue_sync_cookie++;
4142 }
4143
4144 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4145 {
4146 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4147 struct iwl_mvm_internal_rxq_notif data = {
4148 .type = IWL_MVM_RXQ_EMPTY,
4149 .sync = 1,
4150 };
4151
4152 mutex_lock(&mvm->mutex);
4153 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4154 mutex_unlock(&mvm->mutex);
4155 }
4156
4157 const struct ieee80211_ops iwl_mvm_hw_ops = {
4158 .tx = iwl_mvm_mac_tx,
4159 .ampdu_action = iwl_mvm_mac_ampdu_action,
4160 .start = iwl_mvm_mac_start,
4161 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4162 .stop = iwl_mvm_mac_stop,
4163 .add_interface = iwl_mvm_mac_add_interface,
4164 .remove_interface = iwl_mvm_mac_remove_interface,
4165 .config = iwl_mvm_mac_config,
4166 .prepare_multicast = iwl_mvm_prepare_multicast,
4167 .configure_filter = iwl_mvm_configure_filter,
4168 .config_iface_filter = iwl_mvm_config_iface_filter,
4169 .bss_info_changed = iwl_mvm_bss_info_changed,
4170 .hw_scan = iwl_mvm_mac_hw_scan,
4171 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4172 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4173 .sta_state = iwl_mvm_mac_sta_state,
4174 .sta_notify = iwl_mvm_mac_sta_notify,
4175 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4176 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4177 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4178 .sta_rc_update = iwl_mvm_sta_rc_update,
4179 .conf_tx = iwl_mvm_mac_conf_tx,
4180 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4181 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4182 .flush = iwl_mvm_mac_flush,
4183 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4184 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4185 .set_key = iwl_mvm_mac_set_key,
4186 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4187 .remain_on_channel = iwl_mvm_roc,
4188 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4189 .add_chanctx = iwl_mvm_add_chanctx,
4190 .remove_chanctx = iwl_mvm_remove_chanctx,
4191 .change_chanctx = iwl_mvm_change_chanctx,
4192 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4193 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4194 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4195
4196 .start_ap = iwl_mvm_start_ap_ibss,
4197 .stop_ap = iwl_mvm_stop_ap_ibss,
4198 .join_ibss = iwl_mvm_start_ap_ibss,
4199 .leave_ibss = iwl_mvm_stop_ap_ibss,
4200
4201 .set_tim = iwl_mvm_set_tim,
4202
4203 .channel_switch = iwl_mvm_channel_switch,
4204 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4205 .post_channel_switch = iwl_mvm_post_channel_switch,
4206
4207 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4208 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4209 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4210
4211 .event_callback = iwl_mvm_mac_event_callback,
4212
4213 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4214
4215 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4216
4217 #ifdef CONFIG_PM_SLEEP
4218 /* look at d3.c */
4219 .suspend = iwl_mvm_suspend,
4220 .resume = iwl_mvm_resume,
4221 .set_wakeup = iwl_mvm_set_wakeup,
4222 .set_rekey_data = iwl_mvm_set_rekey_data,
4223 #if IS_ENABLED(CONFIG_IPV6)
4224 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4225 #endif
4226 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4227 #endif
4228 .get_survey = iwl_mvm_mac_get_survey,
4229 .sta_statistics = iwl_mvm_mac_sta_statistics,
4230 };
Linux kernel - Deliverables
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