?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / wireless / intel / iwlwifi / mvm / ftm-initiator.c
blobb26141c30c61c5cdcf4647f49666a995c2647b09
1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2015-2017 Intel Deutschland GmbH
4 * Copyright (C) 2018-2024 Intel Corporation
5 */
6 #include <linux/etherdevice.h>
7 #include <linux/math64.h>
8 #include <net/cfg80211.h>
9 #include "mvm.h"
10 #include "iwl-io.h"
11 #include "iwl-prph.h"
12 #include "constants.h"
13
14 struct iwl_mvm_loc_entry {
15 struct list_head list;
16 u8 addr[ETH_ALEN];
17 u8 lci_len, civic_len;
18 u8 buf[];
19 };
20
21 struct iwl_mvm_smooth_entry {
22 struct list_head list;
23 u8 addr[ETH_ALEN];
24 s64 rtt_avg;
25 u64 host_time;
26 };
27
28 enum iwl_mvm_pasn_flags {
29 IWL_MVM_PASN_FLAG_HAS_HLTK = BIT(0),
30 };
31
32 struct iwl_mvm_ftm_pasn_entry {
33 struct list_head list;
34 u8 addr[ETH_ALEN];
35 u8 hltk[HLTK_11AZ_LEN];
36 u8 tk[TK_11AZ_LEN];
37 u8 cipher;
38 u8 tx_pn[IEEE80211_CCMP_PN_LEN];
39 u8 rx_pn[IEEE80211_CCMP_PN_LEN];
40 u32 flags;
41 };
42
43 struct iwl_mvm_ftm_iter_data {
44 u8 *cipher;
45 u8 *bssid;
46 u8 *tk;
47 };
48
49 int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
50 u8 *addr, u32 cipher, u8 *tk, u32 tk_len,
51 u8 *hltk, u32 hltk_len)
52 {
53 struct iwl_mvm_ftm_pasn_entry *pasn = kzalloc(sizeof(*pasn),
54 GFP_KERNEL);
55 u32 expected_tk_len;
56
57 lockdep_assert_held(&mvm->mutex);
58
59 if (!pasn)
60 return -ENOBUFS;
61
62 iwl_mvm_ftm_remove_pasn_sta(mvm, addr);
63
64 pasn->cipher = iwl_mvm_cipher_to_location_cipher(cipher);
65
66 switch (pasn->cipher) {
67 case IWL_LOCATION_CIPHER_CCMP_128:
68 case IWL_LOCATION_CIPHER_GCMP_128:
69 expected_tk_len = WLAN_KEY_LEN_CCMP;
70 break;
71 case IWL_LOCATION_CIPHER_GCMP_256:
72 expected_tk_len = WLAN_KEY_LEN_GCMP_256;
73 break;
74 default:
75 goto out;
76 }
77
78 /*
79 * If associated to this AP and already have security context,
80 * the TK is already configured for this station, so it
81 * shouldn't be set again here.
82 */
83 if (vif->cfg.assoc) {
84 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
85 struct ieee80211_bss_conf *link_conf;
86 unsigned int link_id;
87 struct ieee80211_sta *sta;
88 u8 sta_id;
89
90 rcu_read_lock();
91 for_each_vif_active_link(vif, link_conf, link_id) {
92 if (memcmp(addr, link_conf->bssid, ETH_ALEN))
93 continue;
94
95 sta_id = mvmvif->link[link_id]->ap_sta_id;
96 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
97 if (!IS_ERR_OR_NULL(sta) && sta->mfp)
98 expected_tk_len = 0;
99 break;
100 }
101 rcu_read_unlock();
102 }
103
104 if (tk_len != expected_tk_len ||
105 (hltk_len && hltk_len != sizeof(pasn->hltk))) {
106 IWL_ERR(mvm, "Invalid key length: tk_len=%u hltk_len=%u\n",
107 tk_len, hltk_len);
108 goto out;
109 }
110
111 if (!expected_tk_len && !hltk_len) {
112 IWL_ERR(mvm, "TK and HLTK not set\n");
113 goto out;
114 }
115
116 memcpy(pasn->addr, addr, sizeof(pasn->addr));
117
118 if (hltk_len) {
119 memcpy(pasn->hltk, hltk, sizeof(pasn->hltk));
120 pasn->flags |= IWL_MVM_PASN_FLAG_HAS_HLTK;
121 }
122
123 if (tk && tk_len)
124 memcpy(pasn->tk, tk, sizeof(pasn->tk));
125
126 list_add_tail(&pasn->list, &mvm->ftm_initiator.pasn_list);
127 return 0;
128 out:
129 kfree(pasn);
130 return -EINVAL;
131 }
132
133 void iwl_mvm_ftm_remove_pasn_sta(struct iwl_mvm *mvm, u8 *addr)
134 {
135 struct iwl_mvm_ftm_pasn_entry *entry, *prev;
136
137 lockdep_assert_held(&mvm->mutex);
138
139 list_for_each_entry_safe(entry, prev, &mvm->ftm_initiator.pasn_list,
140 list) {
141 if (memcmp(entry->addr, addr, sizeof(entry->addr)))
142 continue;
143
144 list_del(&entry->list);
145 kfree(entry);
146 return;
147 }
148 }
149
150 static void iwl_mvm_ftm_reset(struct iwl_mvm *mvm)
151 {
152 struct iwl_mvm_loc_entry *e, *t;
153
154 mvm->ftm_initiator.req = NULL;
155 mvm->ftm_initiator.req_wdev = NULL;
156 memset(mvm->ftm_initiator.responses, 0,
157 sizeof(mvm->ftm_initiator.responses));
158
159 list_for_each_entry_safe(e, t, &mvm->ftm_initiator.loc_list, list) {
160 list_del(&e->list);
161 kfree(e);
162 }
163 }
164
165 void iwl_mvm_ftm_restart(struct iwl_mvm *mvm)
166 {
167 struct cfg80211_pmsr_result result = {
168 .status = NL80211_PMSR_STATUS_FAILURE,
169 .final = 1,
170 .host_time = ktime_get_boottime_ns(),
171 .type = NL80211_PMSR_TYPE_FTM,
172 };
173 int i;
174
175 lockdep_assert_held(&mvm->mutex);
176
177 if (!mvm->ftm_initiator.req)
178 return;
179
180 for (i = 0; i < mvm->ftm_initiator.req->n_peers; i++) {
181 memcpy(result.addr, mvm->ftm_initiator.req->peers[i].addr,
182 ETH_ALEN);
183 result.ftm.burst_index = mvm->ftm_initiator.responses[i];
184
185 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,
186 mvm->ftm_initiator.req,
187 &result, GFP_KERNEL);
188 }
189
190 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,
191 mvm->ftm_initiator.req, GFP_KERNEL);
192 iwl_mvm_ftm_reset(mvm);
193 }
194
195 void iwl_mvm_ftm_initiator_smooth_config(struct iwl_mvm *mvm)
196 {
197 INIT_LIST_HEAD(&mvm->ftm_initiator.smooth.resp);
198
199 IWL_DEBUG_INFO(mvm,
200 "enable=%u, alpha=%u, age_jiffies=%u, thresh=(%u:%u)\n",
201 IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH,
202 IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA,
203 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * HZ,
204 IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT,
205 IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT);
206 }
207
208 void iwl_mvm_ftm_initiator_smooth_stop(struct iwl_mvm *mvm)
209 {
210 struct iwl_mvm_smooth_entry *se, *st;
211
212 list_for_each_entry_safe(se, st, &mvm->ftm_initiator.smooth.resp,
213 list) {
214 list_del(&se->list);
215 kfree(se);
216 }
217 }
218
219 static int
220 iwl_ftm_range_request_status_to_err(enum iwl_tof_range_request_status s)
221 {
222 switch (s) {
223 case IWL_TOF_RANGE_REQUEST_STATUS_SUCCESS:
224 return 0;
225 case IWL_TOF_RANGE_REQUEST_STATUS_BUSY:
226 return -EBUSY;
227 default:
228 WARN_ON_ONCE(1);
229 return -EIO;
230 }
231 }
232
233 static void iwl_mvm_ftm_cmd_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
234 struct iwl_tof_range_req_cmd_v5 *cmd,
235 struct cfg80211_pmsr_request *req)
236 {
237 int i;
238
239 cmd->request_id = req->cookie;
240 cmd->num_of_ap = req->n_peers;
241
242 /* use maximum for "no timeout" or bigger than what we can do */
243 if (!req->timeout || req->timeout > 255 * 100)
244 cmd->req_timeout = 255;
245 else
246 cmd->req_timeout = DIV_ROUND_UP(req->timeout, 100);
247
248 /*
249 * We treat it always as random, since if not we'll
250 * have filled our local address there instead.
251 */
252 cmd->macaddr_random = 1;
253 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN);
254 for (i = 0; i < ETH_ALEN; i++)
255 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i];
256
257 if (vif->cfg.assoc)
258 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);
259 else
260 eth_broadcast_addr(cmd->range_req_bssid);
261 }
262
263 static void iwl_mvm_ftm_cmd_common(struct iwl_mvm *mvm,
264 struct ieee80211_vif *vif,
265 struct iwl_tof_range_req_cmd_v9 *cmd,
266 struct cfg80211_pmsr_request *req)
267 {
268 int i;
269
270 cmd->initiator_flags =
271 cpu_to_le32(IWL_TOF_INITIATOR_FLAGS_MACADDR_RANDOM |
272 IWL_TOF_INITIATOR_FLAGS_NON_ASAP_SUPPORT);
273 cmd->request_id = req->cookie;
274 cmd->num_of_ap = req->n_peers;
275
276 /*
277 * Use a large value for "no timeout". Don't use the maximum value
278 * because of fw limitations.
279 */
280 if (req->timeout)
281 cmd->req_timeout_ms = cpu_to_le32(req->timeout);
282 else
283 cmd->req_timeout_ms = cpu_to_le32(0xfffff);
284
285 memcpy(cmd->macaddr_template, req->mac_addr, ETH_ALEN);
286 for (i = 0; i < ETH_ALEN; i++)
287 cmd->macaddr_mask[i] = ~req->mac_addr_mask[i];
288
289 if (vif->cfg.assoc) {
290 memcpy(cmd->range_req_bssid, vif->bss_conf.bssid, ETH_ALEN);
291
292 /* AP's TSF is only relevant if associated */
293 for (i = 0; i < req->n_peers; i++) {
294 if (req->peers[i].report_ap_tsf) {
295 struct iwl_mvm_vif *mvmvif =
296 iwl_mvm_vif_from_mac80211(vif);
297
298 cmd->tsf_mac_id = cpu_to_le32(mvmvif->id);
299 return;
300 }
301 }
302 } else {
303 eth_broadcast_addr(cmd->range_req_bssid);
304 }
305
306 /* Don't report AP's TSF */
307 cmd->tsf_mac_id = cpu_to_le32(0xff);
308 }
309
310 static void iwl_mvm_ftm_cmd_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
311 struct iwl_tof_range_req_cmd_v8 *cmd,
312 struct cfg80211_pmsr_request *req)
313 {
314 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)cmd, req);
315 }
316
317 static int
318 iwl_mvm_ftm_target_chandef_v1(struct iwl_mvm *mvm,
319 struct cfg80211_pmsr_request_peer *peer,
320 u8 *channel, u8 *bandwidth,
321 u8 *ctrl_ch_position)
322 {
323 u32 freq = peer->chandef.chan->center_freq;
324
325 *channel = ieee80211_frequency_to_channel(freq);
326
327 switch (peer->chandef.width) {
328 case NL80211_CHAN_WIDTH_20_NOHT:
329 *bandwidth = IWL_TOF_BW_20_LEGACY;
330 break;
331 case NL80211_CHAN_WIDTH_20:
332 *bandwidth = IWL_TOF_BW_20_HT;
333 break;
334 case NL80211_CHAN_WIDTH_40:
335 *bandwidth = IWL_TOF_BW_40;
336 break;
337 case NL80211_CHAN_WIDTH_80:
338 *bandwidth = IWL_TOF_BW_80;
339 break;
340 default:
341 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",
342 peer->chandef.width);
343 return -EINVAL;
344 }
345
346 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?
347 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;
348
349 return 0;
350 }
351
352 static int
353 iwl_mvm_ftm_target_chandef_v2(struct iwl_mvm *mvm,
354 struct cfg80211_pmsr_request_peer *peer,
355 u8 *channel, u8 *format_bw,
356 u8 *ctrl_ch_position)
357 {
358 u32 freq = peer->chandef.chan->center_freq;
359 u8 cmd_ver;
360
361 *channel = ieee80211_frequency_to_channel(freq);
362
363 switch (peer->chandef.width) {
364 case NL80211_CHAN_WIDTH_20_NOHT:
365 *format_bw = IWL_LOCATION_FRAME_FORMAT_LEGACY;
366 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;
367 break;
368 case NL80211_CHAN_WIDTH_20:
369 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;
370 *format_bw |= IWL_LOCATION_BW_20MHZ << LOCATION_BW_POS;
371 break;
372 case NL80211_CHAN_WIDTH_40:
373 *format_bw = IWL_LOCATION_FRAME_FORMAT_HT;
374 *format_bw |= IWL_LOCATION_BW_40MHZ << LOCATION_BW_POS;
375 break;
376 case NL80211_CHAN_WIDTH_80:
377 *format_bw = IWL_LOCATION_FRAME_FORMAT_VHT;
378 *format_bw |= IWL_LOCATION_BW_80MHZ << LOCATION_BW_POS;
379 break;
380 case NL80211_CHAN_WIDTH_160:
381 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
382 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
383 IWL_FW_CMD_VER_UNKNOWN);
384
385 if (cmd_ver >= 13) {
386 *format_bw = IWL_LOCATION_FRAME_FORMAT_HE;
387 *format_bw |= IWL_LOCATION_BW_160MHZ << LOCATION_BW_POS;
388 break;
389 }
390 fallthrough;
391 default:
392 IWL_ERR(mvm, "Unsupported BW in FTM request (%d)\n",
393 peer->chandef.width);
394 return -EINVAL;
395 }
396
397 /* non EDCA based measurement must use HE preamble */
398 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)
399 *format_bw |= IWL_LOCATION_FRAME_FORMAT_HE;
400
401 *ctrl_ch_position = (peer->chandef.width > NL80211_CHAN_WIDTH_20) ?
402 iwl_mvm_get_ctrl_pos(&peer->chandef) : 0;
403
404 return 0;
405 }
406
407 static int
408 iwl_mvm_ftm_put_target_v2(struct iwl_mvm *mvm,
409 struct cfg80211_pmsr_request_peer *peer,
410 struct iwl_tof_range_req_ap_entry_v2 *target)
411 {
412 int ret;
413
414 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,
415 &target->bandwidth,
416 &target->ctrl_ch_position);
417 if (ret)
418 return ret;
419
420 memcpy(target->bssid, peer->addr, ETH_ALEN);
421 target->burst_period =
422 cpu_to_le16(peer->ftm.burst_period);
423 target->samples_per_burst = peer->ftm.ftms_per_burst;
424 target->num_of_bursts = peer->ftm.num_bursts_exp;
425 target->measure_type = 0; /* regular two-sided FTM */
426 target->retries_per_sample = peer->ftm.ftmr_retries;
427 target->asap_mode = peer->ftm.asap;
428 target->enable_dyn_ack = IWL_MVM_FTM_INITIATOR_DYNACK;
429
430 if (peer->ftm.request_lci)
431 target->location_req |= IWL_TOF_LOC_LCI;
432 if (peer->ftm.request_civicloc)
433 target->location_req |= IWL_TOF_LOC_CIVIC;
434
435 target->algo_type = IWL_MVM_FTM_INITIATOR_ALGO;
436
437 return 0;
438 }
439
440 #define FTM_SET_FLAG(flag) (*flags |= \
441 cpu_to_le32(IWL_INITIATOR_AP_FLAGS_##flag))
442
443 static void
444 iwl_mvm_ftm_set_target_flags(struct iwl_mvm *mvm,
445 struct cfg80211_pmsr_request_peer *peer,
446 __le32 *flags)
447 {
448 *flags = cpu_to_le32(0);
449
450 if (peer->ftm.asap)
451 FTM_SET_FLAG(ASAP);
452
453 if (peer->ftm.request_lci)
454 FTM_SET_FLAG(LCI_REQUEST);
455
456 if (peer->ftm.request_civicloc)
457 FTM_SET_FLAG(CIVIC_REQUEST);
458
459 if (IWL_MVM_FTM_INITIATOR_DYNACK)
460 FTM_SET_FLAG(DYN_ACK);
461
462 if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_LINEAR_REG)
463 FTM_SET_FLAG(ALGO_LR);
464 else if (IWL_MVM_FTM_INITIATOR_ALGO == IWL_TOF_ALGO_TYPE_FFT)
465 FTM_SET_FLAG(ALGO_FFT);
466
467 if (peer->ftm.trigger_based)
468 FTM_SET_FLAG(TB);
469 else if (peer->ftm.non_trigger_based)
470 FTM_SET_FLAG(NON_TB);
471
472 if ((peer->ftm.trigger_based || peer->ftm.non_trigger_based) &&
473 peer->ftm.lmr_feedback)
474 FTM_SET_FLAG(LMR_FEEDBACK);
475 }
476
477 static void
478 iwl_mvm_ftm_put_target_common(struct iwl_mvm *mvm,
479 struct cfg80211_pmsr_request_peer *peer,
480 struct iwl_tof_range_req_ap_entry_v6 *target)
481 {
482 memcpy(target->bssid, peer->addr, ETH_ALEN);
483 target->burst_period =
484 cpu_to_le16(peer->ftm.burst_period);
485 target->samples_per_burst = peer->ftm.ftms_per_burst;
486 target->num_of_bursts = peer->ftm.num_bursts_exp;
487 target->ftmr_max_retries = peer->ftm.ftmr_retries;
488 iwl_mvm_ftm_set_target_flags(mvm, peer, &target->initiator_ap_flags);
489 }
490
491 static int
492 iwl_mvm_ftm_put_target_v3(struct iwl_mvm *mvm,
493 struct cfg80211_pmsr_request_peer *peer,
494 struct iwl_tof_range_req_ap_entry_v3 *target)
495 {
496 int ret;
497
498 ret = iwl_mvm_ftm_target_chandef_v1(mvm, peer, &target->channel_num,
499 &target->bandwidth,
500 &target->ctrl_ch_position);
501 if (ret)
502 return ret;
503
504 /*
505 * Versions 3 and 4 has some common fields, so
506 * iwl_mvm_ftm_put_target_common() can be used for version 7 too.
507 */
508 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);
509
510 return 0;
511 }
512
513 static int
514 iwl_mvm_ftm_put_target_v4(struct iwl_mvm *mvm,
515 struct cfg80211_pmsr_request_peer *peer,
516 struct iwl_tof_range_req_ap_entry_v4 *target)
517 {
518 int ret;
519
520 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,
521 &target->format_bw,
522 &target->ctrl_ch_position);
523 if (ret)
524 return ret;
525
526 iwl_mvm_ftm_put_target_common(mvm, peer, (void *)target);
527
528 return 0;
529 }
530
531 static int iwl_mvm_ftm_set_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
532 struct cfg80211_pmsr_request_peer *peer,
533 u8 *sta_id, __le32 *flags)
534 {
535 if (vif->cfg.assoc) {
536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
537 struct ieee80211_sta *sta;
538 struct ieee80211_bss_conf *link_conf;
539 unsigned int link_id;
540
541 rcu_read_lock();
542 for_each_vif_active_link(vif, link_conf, link_id) {
543 if (memcmp(peer->addr, link_conf->bssid, ETH_ALEN))
544 continue;
545
546 *sta_id = mvmvif->link[link_id]->ap_sta_id;
547 sta = rcu_dereference(mvm->fw_id_to_mac_id[*sta_id]);
548 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
549 rcu_read_unlock();
550 return PTR_ERR_OR_ZERO(sta);
551 }
552
553 if (sta->mfp && (peer->ftm.trigger_based ||
554 peer->ftm.non_trigger_based))
555 FTM_SET_FLAG(PMF);
556 break;
557 }
558 rcu_read_unlock();
559
560 #ifdef CONFIG_IWLWIFI_DEBUGFS
561 if (mvmvif->ftm_unprotected) {
562 *sta_id = IWL_INVALID_STA;
563 *flags &= ~cpu_to_le32(IWL_INITIATOR_AP_FLAGS_PMF);
564 }
565 #endif
566 } else {
567 *sta_id = IWL_INVALID_STA;
568 }
569
570 return 0;
571 }
572
573 static int
574 iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
575 struct cfg80211_pmsr_request_peer *peer,
576 struct iwl_tof_range_req_ap_entry_v6 *target)
577 {
578 int ret;
579
580 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,
581 &target->format_bw,
582 &target->ctrl_ch_position);
583 if (ret)
584 return ret;
585
586 iwl_mvm_ftm_put_target_common(mvm, peer, target);
587
588 iwl_mvm_ftm_set_sta(mvm, vif, peer, &target->sta_id,
589 &target->initiator_ap_flags);
590
591 /*
592 * TODO: Beacon interval is currently unknown, so use the common value
593 * of 100 TUs.
594 */
595 target->beacon_interval = cpu_to_le16(100);
596 return 0;
597 }
598
599 static int iwl_mvm_ftm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *hcmd)
600 {
601 u32 status;
602 int err = iwl_mvm_send_cmd_status(mvm, hcmd, &status);
603
604 if (!err && status) {
605 IWL_ERR(mvm, "FTM range request command failure, status: %u\n",
606 status);
607 err = iwl_ftm_range_request_status_to_err(status);
608 }
609
610 return err;
611 }
612
613 static int iwl_mvm_ftm_start_v5(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
614 struct cfg80211_pmsr_request *req)
615 {
616 struct iwl_tof_range_req_cmd_v5 cmd_v5;
617 struct iwl_host_cmd hcmd = {
618 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
619 .dataflags[0] = IWL_HCMD_DFL_DUP,
620 .data[0] = &cmd_v5,
621 .len[0] = sizeof(cmd_v5),
622 };
623 u8 i;
624 int err;
625
626 iwl_mvm_ftm_cmd_v5(mvm, vif, &cmd_v5, req);
627
628 for (i = 0; i < cmd_v5.num_of_ap; i++) {
629 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
630
631 err = iwl_mvm_ftm_put_target_v2(mvm, peer, &cmd_v5.ap[i]);
632 if (err)
633 return err;
634 }
635
636 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
637 }
638
639 static int iwl_mvm_ftm_start_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
640 struct cfg80211_pmsr_request *req)
641 {
642 struct iwl_tof_range_req_cmd_v7 cmd_v7;
643 struct iwl_host_cmd hcmd = {
644 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
645 .dataflags[0] = IWL_HCMD_DFL_DUP,
646 .data[0] = &cmd_v7,
647 .len[0] = sizeof(cmd_v7),
648 };
649 u8 i;
650 int err;
651
652 /*
653 * Versions 7 and 8 has the same structure except from the responders
654 * list, so iwl_mvm_ftm_cmd() can be used for version 7 too.
655 */
656 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd_v7, req);
657
658 for (i = 0; i < cmd_v7.num_of_ap; i++) {
659 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
660
661 err = iwl_mvm_ftm_put_target_v3(mvm, peer, &cmd_v7.ap[i]);
662 if (err)
663 return err;
664 }
665
666 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
667 }
668
669 static int iwl_mvm_ftm_start_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
670 struct cfg80211_pmsr_request *req)
671 {
672 struct iwl_tof_range_req_cmd_v8 cmd;
673 struct iwl_host_cmd hcmd = {
674 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
675 .dataflags[0] = IWL_HCMD_DFL_DUP,
676 .data[0] = &cmd,
677 .len[0] = sizeof(cmd),
678 };
679 u8 i;
680 int err;
681
682 iwl_mvm_ftm_cmd_v8(mvm, vif, (void *)&cmd, req);
683
684 for (i = 0; i < cmd.num_of_ap; i++) {
685 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
686
687 err = iwl_mvm_ftm_put_target_v4(mvm, peer, &cmd.ap[i]);
688 if (err)
689 return err;
690 }
691
692 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
693 }
694
695 static int iwl_mvm_ftm_start_v9(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
696 struct cfg80211_pmsr_request *req)
697 {
698 struct iwl_tof_range_req_cmd_v9 cmd;
699 struct iwl_host_cmd hcmd = {
700 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
701 .dataflags[0] = IWL_HCMD_DFL_DUP,
702 .data[0] = &cmd,
703 .len[0] = sizeof(cmd),
704 };
705 u8 i;
706 int err;
707
708 iwl_mvm_ftm_cmd_common(mvm, vif, &cmd, req);
709
710 for (i = 0; i < cmd.num_of_ap; i++) {
711 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
712 struct iwl_tof_range_req_ap_entry_v6 *target = &cmd.ap[i];
713
714 err = iwl_mvm_ftm_put_target(mvm, vif, peer, target);
715 if (err)
716 return err;
717 }
718
719 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
720 }
721
722 static void iter(struct ieee80211_hw *hw,
723 struct ieee80211_vif *vif,
724 struct ieee80211_sta *sta,
725 struct ieee80211_key_conf *key,
726 void *data)
727 {
728 struct iwl_mvm_ftm_iter_data *target = data;
729
730 if (!sta || memcmp(sta->addr, target->bssid, ETH_ALEN))
731 return;
732
733 WARN_ON(!sta->mfp);
734
735 target->tk = key->key;
736 *target->cipher = iwl_mvm_cipher_to_location_cipher(key->cipher);
737 WARN_ON(*target->cipher == IWL_LOCATION_CIPHER_INVALID);
738 }
739
740 static void
741 iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
742 u8 *bssid, u8 *cipher, u8 *hltk, u8 *tk,
743 u8 *rx_pn, u8 *tx_pn, __le32 *flags)
744 {
745 struct iwl_mvm_ftm_pasn_entry *entry;
746 #ifdef CONFIG_IWLWIFI_DEBUGFS
747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
748
749 if (mvmvif->ftm_unprotected)
750 return;
751 #endif
752
753 if (!(le32_to_cpu(*flags) & (IWL_INITIATOR_AP_FLAGS_NON_TB |
754 IWL_INITIATOR_AP_FLAGS_TB)))
755 return;
756
757 lockdep_assert_held(&mvm->mutex);
758
759 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {
760 if (memcmp(entry->addr, bssid, sizeof(entry->addr)))
761 continue;
762
763 *cipher = entry->cipher;
764
765 if (entry->flags & IWL_MVM_PASN_FLAG_HAS_HLTK)
766 memcpy(hltk, entry->hltk, sizeof(entry->hltk));
767 else
768 memset(hltk, 0, sizeof(entry->hltk));
769
770 if (vif->cfg.assoc &&
771 !memcmp(vif->bss_conf.bssid, bssid, ETH_ALEN)) {
772 struct iwl_mvm_ftm_iter_data target;
773
774 target.bssid = bssid;
775 target.cipher = cipher;
776 ieee80211_iter_keys(mvm->hw, vif, iter, &target);
777 } else {
778 memcpy(tk, entry->tk, sizeof(entry->tk));
779 }
780
781 memcpy(rx_pn, entry->rx_pn, sizeof(entry->rx_pn));
782 memcpy(tx_pn, entry->tx_pn, sizeof(entry->tx_pn));
783
784 FTM_SET_FLAG(SECURED);
785 return;
786 }
787 }
788
789 static int
790 iwl_mvm_ftm_put_target_v7(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
791 struct cfg80211_pmsr_request_peer *peer,
792 struct iwl_tof_range_req_ap_entry_v7 *target)
793 {
794 int err = iwl_mvm_ftm_put_target(mvm, vif, peer, (void *)target);
795 if (err)
796 return err;
797
798 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target->bssid,
799 &target->cipher, target->hltk,
800 target->tk, target->rx_pn,
801 target->tx_pn,
802 &target->initiator_ap_flags);
803 return err;
804 }
805
806 static int iwl_mvm_ftm_start_v11(struct iwl_mvm *mvm,
807 struct ieee80211_vif *vif,
808 struct cfg80211_pmsr_request *req)
809 {
810 struct iwl_tof_range_req_cmd_v11 cmd;
811 struct iwl_host_cmd hcmd = {
812 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
813 .dataflags[0] = IWL_HCMD_DFL_DUP,
814 .data[0] = &cmd,
815 .len[0] = sizeof(cmd),
816 };
817 u8 i;
818 int err;
819
820 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
821
822 for (i = 0; i < cmd.num_of_ap; i++) {
823 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
824 struct iwl_tof_range_req_ap_entry_v7 *target = &cmd.ap[i];
825
826 err = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, target);
827 if (err)
828 return err;
829 }
830
831 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
832 }
833
834 static void
835 iwl_mvm_ftm_set_ndp_params(struct iwl_mvm *mvm,
836 struct iwl_tof_range_req_ap_entry_v8 *target)
837 {
838 /* Only 2 STS are supported on Tx */
839 u32 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 :
840 IWL_MVM_FTM_I2R_MAX_STS;
841
842 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP |
843 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS);
844 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP |
845 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS);
846 target->r2i_max_total_ltf = IWL_MVM_FTM_R2I_MAX_TOTAL_LTF;
847 target->i2r_max_total_ltf = IWL_MVM_FTM_I2R_MAX_TOTAL_LTF;
848 }
849
850 static int
851 iwl_mvm_ftm_put_target_v8(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
852 struct cfg80211_pmsr_request_peer *peer,
853 struct iwl_tof_range_req_ap_entry_v8 *target)
854 {
855 u32 flags;
856 int ret = iwl_mvm_ftm_put_target_v7(mvm, vif, peer, (void *)target);
857
858 if (ret)
859 return ret;
860
861 iwl_mvm_ftm_set_ndp_params(mvm, target);
862
863 /*
864 * If secure LTF is turned off, replace the flag with PMF only
865 */
866 flags = le32_to_cpu(target->initiator_ap_flags);
867 if (flags & IWL_INITIATOR_AP_FLAGS_SECURED) {
868 if (!IWL_MVM_FTM_INITIATOR_SECURE_LTF)
869 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED;
870
871 flags |= IWL_INITIATOR_AP_FLAGS_PMF;
872 target->initiator_ap_flags = cpu_to_le32(flags);
873 }
874
875 return 0;
876 }
877
878 static int iwl_mvm_ftm_start_v12(struct iwl_mvm *mvm,
879 struct ieee80211_vif *vif,
880 struct cfg80211_pmsr_request *req)
881 {
882 struct iwl_tof_range_req_cmd_v12 cmd;
883 struct iwl_host_cmd hcmd = {
884 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
885 .dataflags[0] = IWL_HCMD_DFL_DUP,
886 .data[0] = &cmd,
887 .len[0] = sizeof(cmd),
888 };
889 u8 i;
890 int err;
891
892 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
893
894 for (i = 0; i < cmd.num_of_ap; i++) {
895 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
896 struct iwl_tof_range_req_ap_entry_v8 *target = &cmd.ap[i];
897
898 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, target);
899 if (err)
900 return err;
901 }
902
903 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
904 }
905
906 static int iwl_mvm_ftm_start_v13(struct iwl_mvm *mvm,
907 struct ieee80211_vif *vif,
908 struct cfg80211_pmsr_request *req)
909 {
910 struct iwl_tof_range_req_cmd_v13 cmd;
911 struct iwl_host_cmd hcmd = {
912 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
913 .dataflags[0] = IWL_HCMD_DFL_DUP,
914 .data[0] = &cmd,
915 .len[0] = sizeof(cmd),
916 };
917 u8 i;
918 int err;
919
920 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
921
922 for (i = 0; i < cmd.num_of_ap; i++) {
923 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
924 struct iwl_tof_range_req_ap_entry_v9 *target = &cmd.ap[i];
925
926 err = iwl_mvm_ftm_put_target_v8(mvm, vif, peer, (void *)target);
927 if (err)
928 return err;
929
930 if (peer->ftm.trigger_based || peer->ftm.non_trigger_based)
931 target->bss_color = peer->ftm.bss_color;
932
933 if (peer->ftm.non_trigger_based) {
934 target->min_time_between_msr =
935 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR);
936 target->burst_period =
937 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR);
938 } else {
939 target->min_time_between_msr = cpu_to_le16(0);
940 }
941
942 target->band =
943 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band);
944 }
945
946 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
947 }
948
949 static int
950 iwl_mvm_ftm_put_target_v10(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
951 struct cfg80211_pmsr_request_peer *peer,
952 struct iwl_tof_range_req_ap_entry_v10 *target)
953 {
954 u32 i2r_max_sts, flags;
955 int ret;
956
957 ret = iwl_mvm_ftm_target_chandef_v2(mvm, peer, &target->channel_num,
958 &target->format_bw,
959 &target->ctrl_ch_position);
960 if (ret)
961 return ret;
962
963 memcpy(target->bssid, peer->addr, ETH_ALEN);
964 target->burst_period =
965 cpu_to_le16(peer->ftm.burst_period);
966 target->samples_per_burst = peer->ftm.ftms_per_burst;
967 target->num_of_bursts = peer->ftm.num_bursts_exp;
968 iwl_mvm_ftm_set_target_flags(mvm, peer, &target->initiator_ap_flags);
969 iwl_mvm_ftm_set_sta(mvm, vif, peer, &target->sta_id,
970 &target->initiator_ap_flags);
971 iwl_mvm_ftm_set_secured_ranging(mvm, vif, target->bssid,
972 &target->cipher, target->hltk,
973 target->tk, target->rx_pn,
974 target->tx_pn,
975 &target->initiator_ap_flags);
976
977 i2r_max_sts = IWL_MVM_FTM_I2R_MAX_STS > 1 ? 1 :
978 IWL_MVM_FTM_I2R_MAX_STS;
979
980 target->r2i_ndp_params = IWL_MVM_FTM_R2I_MAX_REP |
981 (IWL_MVM_FTM_R2I_MAX_STS << IWL_LOCATION_MAX_STS_POS) |
982 (IWL_MVM_FTM_R2I_MAX_TOTAL_LTF << IWL_LOCATION_TOTAL_LTF_POS);
983 target->i2r_ndp_params = IWL_MVM_FTM_I2R_MAX_REP |
984 (i2r_max_sts << IWL_LOCATION_MAX_STS_POS) |
985 (IWL_MVM_FTM_I2R_MAX_TOTAL_LTF << IWL_LOCATION_TOTAL_LTF_POS);
986
987 if (peer->ftm.non_trigger_based) {
988 target->min_time_between_msr =
989 cpu_to_le16(IWL_MVM_FTM_NON_TB_MIN_TIME_BETWEEN_MSR);
990 target->burst_period =
991 cpu_to_le16(IWL_MVM_FTM_NON_TB_MAX_TIME_BETWEEN_MSR);
992 } else {
993 target->min_time_between_msr = cpu_to_le16(0);
994 }
995
996 target->band =
997 iwl_mvm_phy_band_from_nl80211(peer->chandef.chan->band);
998
999 /*
1000 * TODO: Beacon interval is currently unknown, so use the common value
1001 * of 100 TUs.
1002 */
1003 target->beacon_interval = cpu_to_le16(100);
1004
1005 /*
1006 * If secure LTF is turned off, replace the flag with PMF only
1007 */
1008 flags = le32_to_cpu(target->initiator_ap_flags);
1009 if (flags & IWL_INITIATOR_AP_FLAGS_SECURED) {
1010 if (!IWL_MVM_FTM_INITIATOR_SECURE_LTF)
1011 flags &= ~IWL_INITIATOR_AP_FLAGS_SECURED;
1012
1013 flags |= IWL_INITIATOR_AP_FLAGS_PMF;
1014 target->initiator_ap_flags = cpu_to_le32(flags);
1015 }
1016
1017 return 0;
1018 }
1019
1020 static int iwl_mvm_ftm_start_v14(struct iwl_mvm *mvm,
1021 struct ieee80211_vif *vif,
1022 struct cfg80211_pmsr_request *req)
1023 {
1024 struct iwl_tof_range_req_cmd_v14 cmd;
1025 struct iwl_host_cmd hcmd = {
1026 .id = WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
1027 .dataflags[0] = IWL_HCMD_DFL_DUP,
1028 .data[0] = &cmd,
1029 .len[0] = sizeof(cmd),
1030 };
1031 u8 i;
1032 int err;
1033
1034 iwl_mvm_ftm_cmd_common(mvm, vif, (void *)&cmd, req);
1035
1036 for (i = 0; i < cmd.num_of_ap; i++) {
1037 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
1038 struct iwl_tof_range_req_ap_entry_v10 *target = &cmd.ap[i];
1039
1040 err = iwl_mvm_ftm_put_target_v10(mvm, vif, peer, target);
1041 if (err)
1042 return err;
1043 }
1044
1045 return iwl_mvm_ftm_send_cmd(mvm, &hcmd);
1046 }
1047
1048 int iwl_mvm_ftm_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1049 struct cfg80211_pmsr_request *req)
1050 {
1051 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
1052 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);
1053 int err;
1054
1055 lockdep_assert_held(&mvm->mutex);
1056
1057 if (mvm->ftm_initiator.req)
1058 return -EBUSY;
1059
1060 if (new_api) {
1061 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1062 WIDE_ID(LOCATION_GROUP, TOF_RANGE_REQ_CMD),
1063 IWL_FW_CMD_VER_UNKNOWN);
1064
1065 switch (cmd_ver) {
1066 case 15:
1067 /* Version 15 has the same struct as 14 */
1068 case 14:
1069 err = iwl_mvm_ftm_start_v14(mvm, vif, req);
1070 break;
1071 case 13:
1072 err = iwl_mvm_ftm_start_v13(mvm, vif, req);
1073 break;
1074 case 12:
1075 err = iwl_mvm_ftm_start_v12(mvm, vif, req);
1076 break;
1077 case 11:
1078 err = iwl_mvm_ftm_start_v11(mvm, vif, req);
1079 break;
1080 case 9:
1081 case 10:
1082 err = iwl_mvm_ftm_start_v9(mvm, vif, req);
1083 break;
1084 case 8:
1085 err = iwl_mvm_ftm_start_v8(mvm, vif, req);
1086 break;
1087 default:
1088 err = iwl_mvm_ftm_start_v7(mvm, vif, req);
1089 break;
1090 }
1091 } else {
1092 err = iwl_mvm_ftm_start_v5(mvm, vif, req);
1093 }
1094
1095 if (!err) {
1096 mvm->ftm_initiator.req = req;
1097 mvm->ftm_initiator.req_wdev = ieee80211_vif_to_wdev(vif);
1098 }
1099
1100 return err;
1101 }
1102
1103 void iwl_mvm_ftm_abort(struct iwl_mvm *mvm, struct cfg80211_pmsr_request *req)
1104 {
1105 struct iwl_tof_range_abort_cmd cmd = {
1106 .request_id = req->cookie,
1107 };
1108
1109 lockdep_assert_held(&mvm->mutex);
1110
1111 if (req != mvm->ftm_initiator.req)
1112 return;
1113
1114 iwl_mvm_ftm_reset(mvm);
1115
1116 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(LOCATION_GROUP, TOF_RANGE_ABORT_CMD),
1117 0, sizeof(cmd), &cmd))
1118 IWL_ERR(mvm, "failed to abort FTM process\n");
1119 }
1120
1121 static int iwl_mvm_ftm_find_peer(struct cfg80211_pmsr_request *req,
1122 const u8 *addr)
1123 {
1124 int i;
1125
1126 for (i = 0; i < req->n_peers; i++) {
1127 struct cfg80211_pmsr_request_peer *peer = &req->peers[i];
1128
1129 if (ether_addr_equal_unaligned(peer->addr, addr))
1130 return i;
1131 }
1132
1133 return -ENOENT;
1134 }
1135
1136 static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts)
1137 {
1138 u32 gp2_ts = le32_to_cpu(fw_gp2_ts);
1139 u32 curr_gp2, diff;
1140 u64 now_from_boot_ns;
1141
1142 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2,
1143 &now_from_boot_ns, NULL);
1144
1145 if (curr_gp2 >= gp2_ts)
1146 diff = curr_gp2 - gp2_ts;
1147 else
1148 diff = curr_gp2 + (U32_MAX - gp2_ts + 1);
1149
1150 return now_from_boot_ns - (u64)diff * 1000;
1151 }
1152
1153 static void iwl_mvm_ftm_get_lci_civic(struct iwl_mvm *mvm,
1154 struct cfg80211_pmsr_result *res)
1155 {
1156 struct iwl_mvm_loc_entry *entry;
1157
1158 list_for_each_entry(entry, &mvm->ftm_initiator.loc_list, list) {
1159 if (!ether_addr_equal_unaligned(res->addr, entry->addr))
1160 continue;
1161
1162 if (entry->lci_len) {
1163 res->ftm.lci_len = entry->lci_len;
1164 res->ftm.lci = entry->buf;
1165 }
1166
1167 if (entry->civic_len) {
1168 res->ftm.civicloc_len = entry->civic_len;
1169 res->ftm.civicloc = entry->buf + entry->lci_len;
1170 }
1171
1172 /* we found the entry we needed */
1173 break;
1174 }
1175 }
1176
1177 static int iwl_mvm_ftm_range_resp_valid(struct iwl_mvm *mvm, u8 request_id,
1178 u8 num_of_aps)
1179 {
1180 lockdep_assert_held(&mvm->mutex);
1181
1182 if (request_id != (u8)mvm->ftm_initiator.req->cookie) {
1183 IWL_ERR(mvm, "Request ID mismatch, got %u, active %u\n",
1184 request_id, (u8)mvm->ftm_initiator.req->cookie);
1185 return -EINVAL;
1186 }
1187
1188 if (num_of_aps > mvm->ftm_initiator.req->n_peers) {
1189 IWL_ERR(mvm, "FTM range response invalid\n");
1190 return -EINVAL;
1191 }
1192
1193 return 0;
1194 }
1195
1196 static void iwl_mvm_ftm_rtt_smoothing(struct iwl_mvm *mvm,
1197 struct cfg80211_pmsr_result *res)
1198 {
1199 struct iwl_mvm_smooth_entry *resp = NULL, *iter;
1200 s64 rtt_avg, rtt = res->ftm.rtt_avg;
1201 u32 undershoot, overshoot;
1202 u8 alpha;
1203
1204 if (!IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH)
1205 return;
1206
1207 WARN_ON(rtt < 0);
1208
1209 if (res->status != NL80211_PMSR_STATUS_SUCCESS) {
1210 IWL_DEBUG_INFO(mvm,
1211 ": %pM: ignore failed measurement. Status=%u\n",
1212 res->addr, res->status);
1213 return;
1214 }
1215
1216 list_for_each_entry(iter, &mvm->ftm_initiator.smooth.resp, list) {
1217 if (!memcmp(res->addr, iter->addr, ETH_ALEN)) {
1218 resp = iter;
1219 break;
1220 }
1221 }
1222
1223 if (!resp) {
1224 resp = kzalloc(sizeof(*resp), GFP_KERNEL);
1225 if (!resp)
1226 return;
1227
1228 memcpy(resp->addr, res->addr, ETH_ALEN);
1229 list_add_tail(&resp->list, &mvm->ftm_initiator.smooth.resp);
1230
1231 resp->rtt_avg = rtt;
1232
1233 IWL_DEBUG_INFO(mvm, "new: %pM: rtt_avg=%lld\n",
1234 resp->addr, resp->rtt_avg);
1235 goto update_time;
1236 }
1237
1238 if (res->host_time - resp->host_time >
1239 IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC * 1000000000) {
1240 resp->rtt_avg = rtt;
1241
1242 IWL_DEBUG_INFO(mvm, "expired: %pM: rtt_avg=%lld\n",
1243 resp->addr, resp->rtt_avg);
1244 goto update_time;
1245 }
1246
1247 /* Smooth the results based on the tracked RTT average */
1248 undershoot = IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT;
1249 overshoot = IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT;
1250 alpha = IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA;
1251
1252 rtt_avg = div_s64(alpha * rtt + (100 - alpha) * resp->rtt_avg, 100);
1253
1254 IWL_DEBUG_INFO(mvm,
1255 "%pM: prev rtt_avg=%lld, new rtt_avg=%lld, rtt=%lld\n",
1256 resp->addr, resp->rtt_avg, rtt_avg, rtt);
1257
1258 /*
1259 * update the responder's average RTT results regardless of
1260 * the under/over shoot logic below
1261 */
1262 resp->rtt_avg = rtt_avg;
1263
1264 /* smooth the results */
1265 if (rtt_avg > rtt && (rtt_avg - rtt) > undershoot) {
1266 res->ftm.rtt_avg = rtt_avg;
1267
1268 IWL_DEBUG_INFO(mvm,
1269 "undershoot: val=%lld\n",
1270 (rtt_avg - rtt));
1271 } else if (rtt_avg < rtt && (rtt - rtt_avg) >
1272 overshoot) {
1273 res->ftm.rtt_avg = rtt_avg;
1274 IWL_DEBUG_INFO(mvm,
1275 "overshoot: val=%lld\n",
1276 (rtt - rtt_avg));
1277 }
1278
1279 update_time:
1280 resp->host_time = res->host_time;
1281 }
1282
1283 static void iwl_mvm_debug_range_resp(struct iwl_mvm *mvm, u8 index,
1284 struct cfg80211_pmsr_result *res)
1285 {
1286 s64 rtt_avg = div_s64(res->ftm.rtt_avg * 100, 6666);
1287
1288 IWL_DEBUG_INFO(mvm, "entry %d\n", index);
1289 IWL_DEBUG_INFO(mvm, "\tstatus: %d\n", res->status);
1290 IWL_DEBUG_INFO(mvm, "\tBSSID: %pM\n", res->addr);
1291 IWL_DEBUG_INFO(mvm, "\thost time: %llu\n", res->host_time);
1292 IWL_DEBUG_INFO(mvm, "\tburst index: %d\n", res->ftm.burst_index);
1293 IWL_DEBUG_INFO(mvm, "\tsuccess num: %u\n", res->ftm.num_ftmr_successes);
1294 IWL_DEBUG_INFO(mvm, "\trssi: %d\n", res->ftm.rssi_avg);
1295 IWL_DEBUG_INFO(mvm, "\trssi spread: %d\n", res->ftm.rssi_spread);
1296 IWL_DEBUG_INFO(mvm, "\trtt: %lld\n", res->ftm.rtt_avg);
1297 IWL_DEBUG_INFO(mvm, "\trtt var: %llu\n", res->ftm.rtt_variance);
1298 IWL_DEBUG_INFO(mvm, "\trtt spread: %llu\n", res->ftm.rtt_spread);
1299 IWL_DEBUG_INFO(mvm, "\tdistance: %lld\n", rtt_avg);
1300 }
1301
1302 static void
1303 iwl_mvm_ftm_pasn_update_pn(struct iwl_mvm *mvm,
1304 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap)
1305 {
1306 struct iwl_mvm_ftm_pasn_entry *entry;
1307
1308 lockdep_assert_held(&mvm->mutex);
1309
1310 list_for_each_entry(entry, &mvm->ftm_initiator.pasn_list, list) {
1311 if (memcmp(fw_ap->bssid, entry->addr, sizeof(entry->addr)))
1312 continue;
1313
1314 memcpy(entry->rx_pn, fw_ap->rx_pn, sizeof(entry->rx_pn));
1315 memcpy(entry->tx_pn, fw_ap->tx_pn, sizeof(entry->tx_pn));
1316 return;
1317 }
1318 }
1319
1320 static u8 iwl_mvm_ftm_get_range_resp_ver(struct iwl_mvm *mvm)
1321 {
1322 if (!fw_has_api(&mvm->fw->ucode_capa,
1323 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ))
1324 return 5;
1325
1326 /* Starting from version 8, the FW advertises the version */
1327 if (mvm->cmd_ver.range_resp >= 8)
1328 return mvm->cmd_ver.range_resp;
1329 else if (fw_has_api(&mvm->fw->ucode_capa,
1330 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
1331 return 7;
1332
1333 /* The first version of the new range request API */
1334 return 6;
1335 }
1336
1337 static bool iwl_mvm_ftm_resp_size_validation(u8 ver, unsigned int pkt_len)
1338 {
1339 switch (ver) {
1340 case 9:
1341 case 8:
1342 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v8);
1343 case 7:
1344 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v7);
1345 case 6:
1346 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v6);
1347 case 5:
1348 return pkt_len == sizeof(struct iwl_tof_range_rsp_ntfy_v5);
1349 default:
1350 WARN_ONCE(1, "FTM: unsupported range response version %u", ver);
1351 return false;
1352 }
1353 }
1354
1355 void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1356 {
1357 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1358 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1359 struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data;
1360 struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data;
1361 struct iwl_tof_range_rsp_ntfy_v7 *fw_resp_v7 = (void *)pkt->data;
1362 struct iwl_tof_range_rsp_ntfy_v8 *fw_resp_v8 = (void *)pkt->data;
1363 int i;
1364 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
1365 IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ);
1366 u8 num_of_aps, last_in_batch;
1367 u8 notif_ver = iwl_mvm_ftm_get_range_resp_ver(mvm);
1368
1369 lockdep_assert_held(&mvm->mutex);
1370
1371 if (!mvm->ftm_initiator.req) {
1372 return;
1373 }
1374
1375 if (unlikely(!iwl_mvm_ftm_resp_size_validation(notif_ver, pkt_len)))
1376 return;
1377
1378 if (new_api) {
1379 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v8->request_id,
1380 fw_resp_v8->num_of_aps))
1381 return;
1382
1383 num_of_aps = fw_resp_v8->num_of_aps;
1384 last_in_batch = fw_resp_v8->last_report;
1385 } else {
1386 if (iwl_mvm_ftm_range_resp_valid(mvm, fw_resp_v5->request_id,
1387 fw_resp_v5->num_of_aps))
1388 return;
1389
1390 num_of_aps = fw_resp_v5->num_of_aps;
1391 last_in_batch = fw_resp_v5->last_in_batch;
1392 }
1393
1394 IWL_DEBUG_INFO(mvm, "Range response received\n");
1395 IWL_DEBUG_INFO(mvm, "request id: %lld, num of entries: %u\n",
1396 mvm->ftm_initiator.req->cookie, num_of_aps);
1397
1398 for (i = 0; i < num_of_aps && i < IWL_MVM_TOF_MAX_APS; i++) {
1399 struct cfg80211_pmsr_result result = {};
1400 struct iwl_tof_range_rsp_ap_entry_ntfy_v6 *fw_ap;
1401 int peer_idx;
1402
1403 if (new_api) {
1404 if (notif_ver >= 8) {
1405 fw_ap = &fw_resp_v8->ap[i];
1406 iwl_mvm_ftm_pasn_update_pn(mvm, fw_ap);
1407 } else if (notif_ver == 7) {
1408 fw_ap = (void *)&fw_resp_v7->ap[i];
1409 } else {
1410 fw_ap = (void *)&fw_resp_v6->ap[i];
1411 }
1412
1413 result.final = fw_ap->last_burst;
1414 result.ap_tsf = le32_to_cpu(fw_ap->start_tsf);
1415 result.ap_tsf_valid = 1;
1416 } else {
1417 /* the first part is the same for old and new APIs */
1418 fw_ap = (void *)&fw_resp_v5->ap[i];
1419 /*
1420 * FIXME: the firmware needs to report this, we don't
1421 * even know the number of bursts the responder picked
1422 * (if we asked it to)
1423 */
1424 result.final = 0;
1425 }
1426
1427 peer_idx = iwl_mvm_ftm_find_peer(mvm->ftm_initiator.req,
1428 fw_ap->bssid);
1429 if (peer_idx < 0) {
1430 IWL_WARN(mvm,
1431 "Unknown address (%pM, target #%d) in FTM response\n",
1432 fw_ap->bssid, i);
1433 continue;
1434 }
1435
1436 switch (fw_ap->measure_status) {
1437 case IWL_TOF_ENTRY_SUCCESS:
1438 result.status = NL80211_PMSR_STATUS_SUCCESS;
1439 break;
1440 case IWL_TOF_ENTRY_TIMING_MEASURE_TIMEOUT:
1441 result.status = NL80211_PMSR_STATUS_TIMEOUT;
1442 break;
1443 case IWL_TOF_ENTRY_NO_RESPONSE:
1444 result.status = NL80211_PMSR_STATUS_FAILURE;
1445 result.ftm.failure_reason =
1446 NL80211_PMSR_FTM_FAILURE_NO_RESPONSE;
1447 break;
1448 case IWL_TOF_ENTRY_REQUEST_REJECTED:
1449 result.status = NL80211_PMSR_STATUS_FAILURE;
1450 result.ftm.failure_reason =
1451 NL80211_PMSR_FTM_FAILURE_PEER_BUSY;
1452 result.ftm.busy_retry_time = fw_ap->refusal_period;
1453 break;
1454 default:
1455 result.status = NL80211_PMSR_STATUS_FAILURE;
1456 result.ftm.failure_reason =
1457 NL80211_PMSR_FTM_FAILURE_UNSPECIFIED;
1458 break;
1459 }
1460 memcpy(result.addr, fw_ap->bssid, ETH_ALEN);
1461 result.host_time = iwl_mvm_ftm_get_host_time(mvm,
1462 fw_ap->timestamp);
1463 result.type = NL80211_PMSR_TYPE_FTM;
1464 result.ftm.burst_index = mvm->ftm_initiator.responses[peer_idx];
1465 mvm->ftm_initiator.responses[peer_idx]++;
1466 result.ftm.rssi_avg = fw_ap->rssi;
1467 result.ftm.rssi_avg_valid = 1;
1468 result.ftm.rssi_spread = fw_ap->rssi_spread;
1469 result.ftm.rssi_spread_valid = 1;
1470 result.ftm.rtt_avg = (s32)le32_to_cpu(fw_ap->rtt);
1471 result.ftm.rtt_avg_valid = 1;
1472 result.ftm.rtt_variance = le32_to_cpu(fw_ap->rtt_variance);
1473 result.ftm.rtt_variance_valid = 1;
1474 result.ftm.rtt_spread = le32_to_cpu(fw_ap->rtt_spread);
1475 result.ftm.rtt_spread_valid = 1;
1476
1477 iwl_mvm_ftm_get_lci_civic(mvm, &result);
1478
1479 iwl_mvm_ftm_rtt_smoothing(mvm, &result);
1480
1481 cfg80211_pmsr_report(mvm->ftm_initiator.req_wdev,
1482 mvm->ftm_initiator.req,
1483 &result, GFP_KERNEL);
1484
1485 if (fw_has_api(&mvm->fw->ucode_capa,
1486 IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
1487 IWL_DEBUG_INFO(mvm, "RTT confidence: %u\n",
1488 fw_ap->rttConfidence);
1489
1490 iwl_mvm_debug_range_resp(mvm, i, &result);
1491 }
1492
1493 if (last_in_batch) {
1494 cfg80211_pmsr_complete(mvm->ftm_initiator.req_wdev,
1495 mvm->ftm_initiator.req,
1496 GFP_KERNEL);
1497 iwl_mvm_ftm_reset(mvm);
1498 }
1499 }
1500
1501 void iwl_mvm_ftm_lc_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1502 {
1503 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1504 const struct ieee80211_mgmt *mgmt = (void *)pkt->data;
1505 size_t len = iwl_rx_packet_payload_len(pkt);
1506 struct iwl_mvm_loc_entry *entry;
1507 const u8 *ies, *lci, *civic, *msr_ie;
1508 size_t ies_len, lci_len = 0, civic_len = 0;
1509 size_t baselen = IEEE80211_MIN_ACTION_SIZE +
1510 sizeof(mgmt->u.action.u.ftm);
1511 static const u8 rprt_type_lci = IEEE80211_SPCT_MSR_RPRT_TYPE_LCI;
1512 static const u8 rprt_type_civic = IEEE80211_SPCT_MSR_RPRT_TYPE_CIVIC;
1513
1514 if (len <= baselen)
1515 return;
1516
1517 lockdep_assert_held(&mvm->mutex);
1518
1519 ies = mgmt->u.action.u.ftm.variable;
1520 ies_len = len - baselen;
1521
1522 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,
1523 &rprt_type_lci, 1, 4);
1524 if (msr_ie) {
1525 lci = msr_ie + 2;
1526 lci_len = msr_ie[1];
1527 }
1528
1529 msr_ie = cfg80211_find_ie_match(WLAN_EID_MEASURE_REPORT, ies, ies_len,
1530 &rprt_type_civic, 1, 4);
1531 if (msr_ie) {
1532 civic = msr_ie + 2;
1533 civic_len = msr_ie[1];
1534 }
1535
1536 entry = kmalloc(sizeof(*entry) + lci_len + civic_len, GFP_KERNEL);
1537 if (!entry)
1538 return;
1539
1540 memcpy(entry->addr, mgmt->bssid, ETH_ALEN);
1541
1542 entry->lci_len = lci_len;
1543 if (lci_len)
1544 memcpy(entry->buf, lci, lci_len);
1545
1546 entry->civic_len = civic_len;
1547 if (civic_len)
1548 memcpy(entry->buf + lci_len, civic, civic_len);
1549
1550 list_add_tail(&entry->list, &mvm->ftm_initiator.loc_list);
1551 }
Kernel DRM miscellaneous fixes and cross-tree changes