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freebsd
GitHub Repository: freebsd/freebsd-src
Path: blob/main/sys/contrib/dev/iwlwifi/mvm/rxmq.c
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1
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2
/*
3
* Copyright (C) 2012-2014, 2018-2025 Intel Corporation
4
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5
* Copyright (C) 2015-2017 Intel Deutschland GmbH
6
*/
7
#include <linux/etherdevice.h>
8
#include <linux/skbuff.h>
9
#if defined(__FreeBSD__)
10
#include <net/ieee80211_radiotap.h>
11
#endif
12
#include "iwl-trans.h"
13
#include "mvm.h"
14
#include "fw-api.h"
15
#include "time-sync.h"
16
17
static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
18
int queue, struct ieee80211_sta *sta)
19
{
20
struct iwl_mvm_sta *mvmsta;
21
struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
22
struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
23
struct iwl_mvm_key_pn *ptk_pn;
24
int res;
25
u8 tid, keyidx;
26
u8 pn[IEEE80211_CCMP_PN_LEN];
27
u8 *extiv;
28
29
/* do PN checking */
30
31
/* multicast and non-data only arrives on default queue */
32
if (!ieee80211_is_data(hdr->frame_control) ||
33
is_multicast_ether_addr(hdr->addr1))
34
return 0;
35
36
/* do not check PN for open AP */
37
if (!(stats->flag & RX_FLAG_DECRYPTED))
38
return 0;
39
40
/*
41
* avoid checking for default queue - we don't want to replicate
42
* all the logic that's necessary for checking the PN on fragmented
43
* frames, leave that to mac80211
44
*/
45
if (queue == 0)
46
return 0;
47
48
/* if we are here - this for sure is either CCMP or GCMP */
49
if (IS_ERR_OR_NULL(sta)) {
50
IWL_DEBUG_DROP(mvm,
51
"expected hw-decrypted unicast frame for station\n");
52
return -1;
53
}
54
55
mvmsta = iwl_mvm_sta_from_mac80211(sta);
56
57
extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
58
keyidx = extiv[3] >> 6;
59
60
ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
61
if (!ptk_pn)
62
return -1;
63
64
if (ieee80211_is_data_qos(hdr->frame_control))
65
tid = ieee80211_get_tid(hdr);
66
else
67
tid = 0;
68
69
/* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
70
if (tid >= IWL_MAX_TID_COUNT)
71
return -1;
72
73
/* load pn */
74
pn[0] = extiv[7];
75
pn[1] = extiv[6];
76
pn[2] = extiv[5];
77
pn[3] = extiv[4];
78
pn[4] = extiv[1];
79
pn[5] = extiv[0];
80
81
res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
82
if (res < 0)
83
return -1;
84
if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
85
return -1;
86
87
memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
88
stats->flag |= RX_FLAG_PN_VALIDATED;
89
90
return 0;
91
}
92
93
/* iwl_mvm_create_skb Adds the rxb to a new skb */
94
static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
95
struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
96
struct iwl_rx_cmd_buffer *rxb)
97
{
98
struct iwl_rx_packet *pkt = rxb_addr(rxb);
99
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
100
unsigned int headlen, fraglen, pad_len = 0;
101
unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
102
u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
103
IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
104
105
if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
106
len -= 2;
107
pad_len = 2;
108
}
109
110
/*
111
* For non monitor interface strip the bytes the RADA might not have
112
* removed (it might be disabled, e.g. for mgmt frames). As a monitor
113
* interface cannot exist with other interfaces, this removal is safe
114
* and sufficient, in monitor mode there's no decryption being done.
115
*/
116
if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
117
len -= mic_crc_len;
118
119
/* If frame is small enough to fit in skb->head, pull it completely.
120
* If not, only pull ieee80211_hdr (including crypto if present, and
121
* an additional 8 bytes for SNAP/ethertype, see below) so that
122
* splice() or TCP coalesce are more efficient.
123
*
124
* Since, in addition, ieee80211_data_to_8023() always pull in at
125
* least 8 bytes (possibly more for mesh) we can do the same here
126
* to save the cost of doing it later. That still doesn't pull in
127
* the actual IP header since the typical case has a SNAP header.
128
* If the latter changes (there are efforts in the standards group
129
* to do so) we should revisit this and ieee80211_data_to_8023().
130
*/
131
headlen = (len <= skb_tailroom(skb)) ? len :
132
hdrlen + crypt_len + 8;
133
134
/* The firmware may align the packet to DWORD.
135
* The padding is inserted after the IV.
136
* After copying the header + IV skip the padding if
137
* present before copying packet data.
138
*/
139
hdrlen += crypt_len;
140
141
if (unlikely(headlen < hdrlen))
142
return -EINVAL;
143
144
/* Since data doesn't move data while putting data on skb and that is
145
* the only way we use, data + len is the next place that hdr would be put
146
*/
147
skb_set_mac_header(skb, skb->len);
148
skb_put_data(skb, hdr, hdrlen);
149
skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
150
151
/*
152
* If we did CHECKSUM_COMPLETE, the hardware only does it right for
153
* certain cases and starts the checksum after the SNAP. Check if
154
* this is the case - it's easier to just bail out to CHECKSUM_NONE
155
* in the cases the hardware didn't handle, since it's rare to see
156
* such packets, even though the hardware did calculate the checksum
157
* in this case, just starting after the MAC header instead.
158
*
159
* Starting from Bz hardware, it calculates starting directly after
160
* the MAC header, so that matches mac80211's expectation.
161
*/
162
if (skb->ip_summed == CHECKSUM_COMPLETE) {
163
struct {
164
u8 hdr[6];
165
__be16 type;
166
} __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
167
168
if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
169
!ether_addr_equal(shdr->hdr, rfc1042_header) ||
170
(shdr->type != htons(ETH_P_IP) &&
171
shdr->type != htons(ETH_P_ARP) &&
172
shdr->type != htons(ETH_P_IPV6) &&
173
shdr->type != htons(ETH_P_8021Q) &&
174
shdr->type != htons(ETH_P_PAE) &&
175
shdr->type != htons(ETH_P_TDLS))))
176
skb->ip_summed = CHECKSUM_NONE;
177
else if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
178
/* mac80211 assumes full CSUM including SNAP header */
179
skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
180
}
181
182
fraglen = len - headlen;
183
184
if (fraglen) {
185
int offset = (u8 *)hdr + headlen + pad_len -
186
(u8 *)rxb_addr(rxb) + rxb_offset(rxb);
187
188
skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
189
fraglen, rxb->truesize);
190
}
191
192
return 0;
193
}
194
195
/* put a TLV on the skb and return data pointer
196
*
197
* Also pad to 4 the len and zero out all data part
198
*/
199
static void *
200
iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
201
{
202
struct ieee80211_radiotap_tlv *tlv;
203
204
tlv = skb_put(skb, sizeof(*tlv));
205
tlv->type = cpu_to_le16(type);
206
tlv->len = cpu_to_le16(len);
207
return skb_put_zero(skb, ALIGN(len, 4));
208
}
209
210
static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
211
struct sk_buff *skb)
212
{
213
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
214
struct ieee80211_radiotap_vendor_content *radiotap;
215
const u16 vendor_data_len = sizeof(mvm->cur_aid);
216
217
if (!mvm->cur_aid)
218
return;
219
220
radiotap = iwl_mvm_radiotap_put_tlv(skb,
221
IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
222
sizeof(*radiotap) + vendor_data_len);
223
224
/* Intel OUI */
225
radiotap->oui[0] = 0xf6;
226
radiotap->oui[1] = 0x54;
227
radiotap->oui[2] = 0x25;
228
/* radiotap sniffer config sub-namespace */
229
radiotap->oui_subtype = 1;
230
radiotap->vendor_type = 0;
231
232
/* fill the data now */
233
memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
234
235
rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
236
}
237
238
/* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
239
static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
240
struct napi_struct *napi,
241
struct sk_buff *skb, int queue,
242
struct ieee80211_sta *sta)
243
{
244
if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
245
kfree_skb(skb);
246
return;
247
}
248
249
ieee80211_rx_napi(mvm->hw, sta, skb, napi);
250
}
251
252
static bool iwl_mvm_used_average_energy(struct iwl_mvm *mvm,
253
struct iwl_rx_mpdu_desc *desc,
254
struct ieee80211_hdr *hdr,
255
struct ieee80211_rx_status *rx_status)
256
{
257
struct iwl_mvm_vif *mvm_vif;
258
struct ieee80211_vif *vif;
259
u32 id;
260
261
if (unlikely(!hdr || !desc))
262
return false;
263
264
if (likely(!ieee80211_is_beacon(hdr->frame_control)))
265
return false;
266
267
/* for the link conf lookup */
268
guard(rcu)();
269
270
/* MAC or link ID depending on FW, but driver has them equal */
271
id = u8_get_bits(desc->mac_phy_band,
272
IWL_RX_MPDU_MAC_PHY_BAND_MAC_MASK);
273
274
/* >= means AUX MAC/link ID, no energy correction needed then */
275
if (id >= ARRAY_SIZE(mvm->vif_id_to_mac))
276
return false;
277
278
vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
279
if (!vif)
280
return false;
281
282
mvm_vif = iwl_mvm_vif_from_mac80211(vif);
283
284
/*
285
* If we know the MAC by MAC or link ID then the frame was
286
* received for the link, so by filtering it means it was
287
* from the AP the link is connected to.
288
*/
289
290
/* skip also in case we don't have it (yet) */
291
if (!mvm_vif->deflink.average_beacon_energy)
292
return false;
293
294
IWL_DEBUG_STATS(mvm, "energy override by average %d\n",
295
mvm_vif->deflink.average_beacon_energy);
296
rx_status->signal = -mvm_vif->deflink.average_beacon_energy;
297
return true;
298
}
299
300
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
301
struct iwl_rx_mpdu_desc *desc,
302
struct ieee80211_hdr *hdr,
303
struct ieee80211_rx_status *rx_status,
304
u32 rate_n_flags, int energy_a,
305
int energy_b)
306
{
307
int max_energy;
308
309
energy_a = energy_a ? -energy_a : S8_MIN;
310
energy_b = energy_b ? -energy_b : S8_MIN;
311
max_energy = max(energy_a, energy_b);
312
313
IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
314
energy_a, energy_b, max_energy);
315
316
if (iwl_mvm_used_average_energy(mvm, desc, hdr, rx_status))
317
return;
318
319
rx_status->signal = max_energy;
320
rx_status->chains = u32_get_bits(rate_n_flags, RATE_MCS_ANT_AB_MSK);
321
rx_status->chain_signal[0] = energy_a;
322
rx_status->chain_signal[1] = energy_b;
323
}
324
325
static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
326
struct ieee80211_hdr *hdr,
327
struct iwl_rx_mpdu_desc *desc,
328
u32 status,
329
struct ieee80211_rx_status *stats)
330
{
331
struct wireless_dev *wdev;
332
struct iwl_mvm_sta *mvmsta;
333
struct iwl_mvm_vif *mvmvif;
334
u8 keyid;
335
struct ieee80211_key_conf *key;
336
u32 len = le16_to_cpu(desc->mpdu_len);
337
const u8 *frame = (void *)hdr;
338
339
if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
340
return 0;
341
342
/*
343
* For non-beacon, we don't really care. But beacons may
344
* be filtered out, and we thus need the firmware's replay
345
* detection, otherwise beacons the firmware previously
346
* filtered could be replayed, or something like that, and
347
* it can filter a lot - though usually only if nothing has
348
* changed.
349
*/
350
if (!ieee80211_is_beacon(hdr->frame_control))
351
return 0;
352
353
if (!sta)
354
return -1;
355
356
mvmsta = iwl_mvm_sta_from_mac80211(sta);
357
mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
358
359
/* key mismatch - will also report !MIC_OK but we shouldn't count it */
360
if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
361
goto report;
362
363
/* good cases */
364
if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
365
!(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
366
stats->flag |= RX_FLAG_DECRYPTED;
367
return 0;
368
}
369
370
/*
371
* both keys will have the same cipher and MIC length, use
372
* whichever one is available
373
*/
374
key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
375
if (!key) {
376
key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
377
if (!key)
378
goto report;
379
}
380
381
if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
382
goto report;
383
384
/* get the real key ID */
385
keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
386
/* and if that's the other key, look it up */
387
if (keyid != key->keyidx) {
388
/*
389
* shouldn't happen since firmware checked, but be safe
390
* in case the MIC length is wrong too, for example
391
*/
392
if (keyid != 6 && keyid != 7)
393
return -1;
394
key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
395
if (!key)
396
goto report;
397
}
398
399
/* Report status to mac80211 */
400
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
401
ieee80211_key_mic_failure(key);
402
else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
403
ieee80211_key_replay(key);
404
report:
405
wdev = ieee80211_vif_to_wdev(mvmsta->vif);
406
if (wdev->netdev)
407
cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
408
409
return -1;
410
}
411
412
static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
413
struct ieee80211_hdr *hdr,
414
struct ieee80211_rx_status *stats, u16 phy_info,
415
struct iwl_rx_mpdu_desc *desc,
416
u32 pkt_flags, int queue, u8 *crypt_len)
417
{
418
u32 status = le32_to_cpu(desc->status);
419
420
/*
421
* Drop UNKNOWN frames in aggregation, unless in monitor mode
422
* (where we don't have the keys).
423
* We limit this to aggregation because in TKIP this is a valid
424
* scenario, since we may not have the (correct) TTAK (phase 1
425
* key) in the firmware.
426
*/
427
if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
428
(status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
429
IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) {
430
IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
431
return -1;
432
}
433
434
if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
435
!ieee80211_has_protected(hdr->frame_control)))
436
return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
437
438
if (!ieee80211_has_protected(hdr->frame_control) ||
439
(status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
440
IWL_RX_MPDU_STATUS_SEC_NONE)
441
return 0;
442
443
/* TODO: handle packets encrypted with unknown alg */
444
#if defined(__FreeBSD__)
445
/* XXX-BZ do similar to rx.c for now as these are plenty. */
446
if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
447
IWL_RX_MPDU_STATUS_SEC_ENC_ERR)
448
return (0);
449
#endif
450
451
switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
452
case IWL_RX_MPDU_STATUS_SEC_CCM:
453
case IWL_RX_MPDU_STATUS_SEC_GCM:
454
BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
455
/* alg is CCM: check MIC only */
456
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
457
IWL_DEBUG_DROP(mvm,
458
"Dropping packet, bad MIC (CCM/GCM)\n");
459
return -1;
460
}
461
462
stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
463
*crypt_len = IEEE80211_CCMP_HDR_LEN;
464
return 0;
465
case IWL_RX_MPDU_STATUS_SEC_TKIP:
466
/* Don't drop the frame and decrypt it in SW */
467
if (!fw_has_api(&mvm->fw->ucode_capa,
468
IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
469
!(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
470
return 0;
471
472
if (mvm->trans->mac_cfg->gen2 &&
473
!(status & RX_MPDU_RES_STATUS_MIC_OK))
474
stats->flag |= RX_FLAG_MMIC_ERROR;
475
476
*crypt_len = IEEE80211_TKIP_IV_LEN;
477
fallthrough;
478
case IWL_RX_MPDU_STATUS_SEC_WEP:
479
if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
480
return -1;
481
482
stats->flag |= RX_FLAG_DECRYPTED;
483
if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
484
IWL_RX_MPDU_STATUS_SEC_WEP)
485
*crypt_len = IEEE80211_WEP_IV_LEN;
486
487
if (pkt_flags & FH_RSCSR_RADA_EN) {
488
stats->flag |= RX_FLAG_ICV_STRIPPED;
489
if (mvm->trans->mac_cfg->gen2)
490
stats->flag |= RX_FLAG_MMIC_STRIPPED;
491
}
492
493
return 0;
494
case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
495
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
496
return -1;
497
stats->flag |= RX_FLAG_DECRYPTED;
498
return 0;
499
case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
500
break;
501
default:
502
/*
503
* Sometimes we can get frames that were not decrypted
504
* because the firmware didn't have the keys yet. This can
505
* happen after connection where we can get multicast frames
506
* before the GTK is installed.
507
* Silently drop those frames.
508
* Also drop un-decrypted frames in monitor mode.
509
*/
510
if (!is_multicast_ether_addr(hdr->addr1) &&
511
!mvm->monitor_on && net_ratelimit())
512
#if defined(__linux__)
513
IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
514
#elif defined(__FreeBSD__)
515
IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, status);
516
#endif
517
}
518
519
return 0;
520
}
521
522
static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
523
struct ieee80211_sta *sta,
524
struct sk_buff *skb,
525
struct iwl_rx_packet *pkt)
526
{
527
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
528
529
if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
530
if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
531
u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
532
533
skb->ip_summed = CHECKSUM_COMPLETE;
534
skb->csum = csum_unfold(~(__force __sum16)hwsum);
535
}
536
} else {
537
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
538
struct iwl_mvm_vif *mvmvif;
539
u16 flags = le16_to_cpu(desc->l3l4_flags);
540
u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
541
IWL_RX_L3_PROTO_POS);
542
543
mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
544
545
if (mvmvif->features & NETIF_F_RXCSUM &&
546
flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
547
(flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
548
l3_prot == IWL_RX_L3_TYPE_IPV6 ||
549
l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
550
skb->ip_summed = CHECKSUM_UNNECESSARY;
551
}
552
}
553
554
/*
555
* returns true if a packet is a duplicate or invalid tid and should be dropped.
556
* Updates AMSDU PN tracking info
557
*/
558
static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
559
struct ieee80211_rx_status *rx_status,
560
struct ieee80211_hdr *hdr,
561
struct iwl_rx_mpdu_desc *desc)
562
{
563
struct iwl_mvm_sta *mvm_sta;
564
struct iwl_mvm_rxq_dup_data *dup_data;
565
u8 tid, sub_frame_idx;
566
567
if (WARN_ON(IS_ERR_OR_NULL(sta)))
568
return false;
569
570
mvm_sta = iwl_mvm_sta_from_mac80211(sta);
571
572
if (WARN_ON_ONCE(!mvm_sta->dup_data))
573
return false;
574
575
dup_data = &mvm_sta->dup_data[queue];
576
577
/*
578
* Drop duplicate 802.11 retransmissions
579
* (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
580
*/
581
if (ieee80211_is_ctl(hdr->frame_control) ||
582
ieee80211_is_any_nullfunc(hdr->frame_control) ||
583
is_multicast_ether_addr(hdr->addr1))
584
return false;
585
586
if (ieee80211_is_data_qos(hdr->frame_control)) {
587
/* frame has qos control */
588
tid = ieee80211_get_tid(hdr);
589
if (tid >= IWL_MAX_TID_COUNT)
590
return true;
591
} else {
592
tid = IWL_MAX_TID_COUNT;
593
}
594
595
/* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
596
sub_frame_idx = desc->amsdu_info &
597
IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
598
599
if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
600
dup_data->last_seq[tid] == hdr->seq_ctrl &&
601
dup_data->last_sub_frame[tid] >= sub_frame_idx))
602
return true;
603
604
/* Allow same PN as the first subframe for following sub frames */
605
if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
606
sub_frame_idx > dup_data->last_sub_frame[tid] &&
607
desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
608
rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
609
610
dup_data->last_seq[tid] = hdr->seq_ctrl;
611
dup_data->last_sub_frame[tid] = sub_frame_idx;
612
613
rx_status->flag |= RX_FLAG_DUP_VALIDATED;
614
615
return false;
616
}
617
618
static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
619
struct ieee80211_sta *sta,
620
struct napi_struct *napi,
621
struct iwl_mvm_baid_data *baid_data,
622
struct iwl_mvm_reorder_buffer *reorder_buf,
623
u16 nssn)
624
{
625
struct iwl_mvm_reorder_buf_entry *entries =
626
&baid_data->entries[reorder_buf->queue *
627
baid_data->entries_per_queue];
628
u16 ssn = reorder_buf->head_sn;
629
630
lockdep_assert_held(&reorder_buf->lock);
631
632
while (ieee80211_sn_less(ssn, nssn)) {
633
int index = ssn % baid_data->buf_size;
634
struct sk_buff_head *skb_list = &entries[index].frames;
635
struct sk_buff *skb;
636
637
ssn = ieee80211_sn_inc(ssn);
638
639
/*
640
* Empty the list. Will have more than one frame for A-MSDU.
641
* Empty list is valid as well since nssn indicates frames were
642
* received.
643
*/
644
while ((skb = __skb_dequeue(skb_list))) {
645
iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
646
reorder_buf->queue,
647
sta);
648
reorder_buf->num_stored--;
649
}
650
}
651
reorder_buf->head_sn = nssn;
652
}
653
654
static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
655
struct iwl_mvm_delba_data *data)
656
{
657
struct iwl_mvm_baid_data *ba_data;
658
struct ieee80211_sta *sta;
659
struct iwl_mvm_reorder_buffer *reorder_buf;
660
u8 baid = data->baid;
661
u32 sta_id;
662
663
if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
664
return;
665
666
rcu_read_lock();
667
668
ba_data = rcu_dereference(mvm->baid_map[baid]);
669
if (WARN_ON_ONCE(!ba_data))
670
goto out;
671
672
/* pick any STA ID to find the pointer */
673
sta_id = ffs(ba_data->sta_mask) - 1;
674
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
675
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
676
goto out;
677
678
reorder_buf = &ba_data->reorder_buf[queue];
679
680
/* release all frames that are in the reorder buffer to the stack */
681
spin_lock_bh(&reorder_buf->lock);
682
iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
683
ieee80211_sn_add(reorder_buf->head_sn,
684
ba_data->buf_size));
685
spin_unlock_bh(&reorder_buf->lock);
686
687
out:
688
rcu_read_unlock();
689
}
690
691
static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
692
struct napi_struct *napi,
693
u8 baid, u16 nssn, int queue)
694
{
695
struct ieee80211_sta *sta;
696
struct iwl_mvm_reorder_buffer *reorder_buf;
697
struct iwl_mvm_baid_data *ba_data;
698
u32 sta_id;
699
700
IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
701
baid, nssn);
702
703
if (IWL_FW_CHECK(mvm,
704
baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
705
baid >= ARRAY_SIZE(mvm->baid_map),
706
"invalid BAID from FW: %d\n", baid))
707
return;
708
709
rcu_read_lock();
710
711
ba_data = rcu_dereference(mvm->baid_map[baid]);
712
if (!ba_data) {
713
IWL_DEBUG_RX(mvm,
714
"Got valid BAID %d but not allocated, invalid frame release!\n",
715
baid);
716
goto out;
717
}
718
719
/* pick any STA ID to find the pointer */
720
sta_id = ffs(ba_data->sta_mask) - 1;
721
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
722
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
723
goto out;
724
725
reorder_buf = &ba_data->reorder_buf[queue];
726
727
spin_lock_bh(&reorder_buf->lock);
728
iwl_mvm_release_frames(mvm, sta, napi, ba_data,
729
reorder_buf, nssn);
730
spin_unlock_bh(&reorder_buf->lock);
731
732
out:
733
rcu_read_unlock();
734
}
735
736
void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
737
struct iwl_rx_cmd_buffer *rxb, int queue)
738
{
739
struct iwl_rx_packet *pkt = rxb_addr(rxb);
740
struct iwl_rxq_sync_notification *notif;
741
struct iwl_mvm_internal_rxq_notif *internal_notif;
742
u32 len = iwl_rx_packet_payload_len(pkt);
743
744
notif = (void *)pkt->data;
745
internal_notif = (void *)notif->payload;
746
747
if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
748
"invalid notification size %d (%d)",
749
len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
750
return;
751
len -= sizeof(*notif) + sizeof(*internal_notif);
752
753
if (WARN_ONCE(internal_notif->sync &&
754
mvm->queue_sync_cookie != internal_notif->cookie,
755
"Received expired RX queue sync message (cookie %d but wanted %d, queue %d)\n",
756
internal_notif->cookie, mvm->queue_sync_cookie, queue))
757
return;
758
759
switch (internal_notif->type) {
760
case IWL_MVM_RXQ_EMPTY:
761
WARN_ONCE(len, "invalid empty notification size %d", len);
762
break;
763
case IWL_MVM_RXQ_NOTIF_DEL_BA:
764
if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
765
"invalid delba notification size %d (%d)",
766
len, (int)sizeof(struct iwl_mvm_delba_data)))
767
break;
768
iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
769
break;
770
default:
771
WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
772
}
773
774
if (internal_notif->sync) {
775
WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
776
"queue sync: queue %d responded a second time!\n",
777
queue);
778
if (READ_ONCE(mvm->queue_sync_state) == 0)
779
wake_up(&mvm->rx_sync_waitq);
780
}
781
}
782
783
/*
784
* Returns true if the MPDU was buffered\dropped, false if it should be passed
785
* to upper layer.
786
*/
787
static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
788
struct napi_struct *napi,
789
int queue,
790
struct ieee80211_sta *sta,
791
struct sk_buff *skb,
792
struct iwl_rx_mpdu_desc *desc)
793
{
794
struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
795
struct iwl_mvm_baid_data *baid_data;
796
struct iwl_mvm_reorder_buffer *buffer;
797
u32 reorder = le32_to_cpu(desc->reorder_data);
798
bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
799
bool last_subframe =
800
desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
801
#if defined(__linux__)
802
u8 tid = ieee80211_get_tid(hdr);
803
#elif defined(__FreeBSD__)
804
u8 tid;
805
#endif
806
struct iwl_mvm_reorder_buf_entry *entries;
807
u32 sta_mask;
808
int index;
809
u16 nssn, sn;
810
u8 baid;
811
812
baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
813
IWL_RX_MPDU_REORDER_BAID_SHIFT;
814
815
if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000)
816
return false;
817
818
/*
819
* This also covers the case of receiving a Block Ack Request
820
* outside a BA session; we'll pass it to mac80211 and that
821
* then sends a delBA action frame.
822
* This also covers pure monitor mode, in which case we won't
823
* have any BA sessions.
824
*/
825
if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
826
return false;
827
828
/* no sta yet */
829
if (WARN_ONCE(IS_ERR_OR_NULL(sta),
830
"Got valid BAID without a valid station assigned\n"))
831
return false;
832
833
/* not a data packet or a bar */
834
if (!ieee80211_is_back_req(hdr->frame_control) &&
835
(!ieee80211_is_data_qos(hdr->frame_control) ||
836
is_multicast_ether_addr(hdr->addr1)))
837
return false;
838
839
if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
840
return false;
841
842
baid_data = rcu_dereference(mvm->baid_map[baid]);
843
if (!baid_data) {
844
IWL_DEBUG_RX(mvm,
845
"Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
846
baid, reorder);
847
return false;
848
}
849
850
#if defined(__FreeBSD__)
851
tid = ieee80211_get_tid(hdr);
852
#endif
853
sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
854
855
if (IWL_FW_CHECK(mvm,
856
tid != baid_data->tid ||
857
!(sta_mask & baid_data->sta_mask),
858
"baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
859
baid, baid_data->sta_mask, baid_data->tid,
860
sta_mask, tid))
861
return false;
862
863
nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
864
sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
865
IWL_RX_MPDU_REORDER_SN_SHIFT;
866
867
buffer = &baid_data->reorder_buf[queue];
868
entries = &baid_data->entries[queue * baid_data->entries_per_queue];
869
870
spin_lock_bh(&buffer->lock);
871
872
if (!buffer->valid) {
873
if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
874
spin_unlock_bh(&buffer->lock);
875
return false;
876
}
877
buffer->valid = true;
878
}
879
880
/* drop any duplicated packets */
881
if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
882
goto drop;
883
884
/* drop any oudated packets */
885
if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
886
goto drop;
887
888
/* release immediately if allowed by nssn and no stored frames */
889
if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
890
if (!amsdu || last_subframe)
891
buffer->head_sn = nssn;
892
893
spin_unlock_bh(&buffer->lock);
894
return false;
895
}
896
897
/*
898
* release immediately if there are no stored frames, and the sn is
899
* equal to the head.
900
* This can happen due to reorder timer, where NSSN is behind head_sn.
901
* When we released everything, and we got the next frame in the
902
* sequence, according to the NSSN we can't release immediately,
903
* while technically there is no hole and we can move forward.
904
*/
905
if (!buffer->num_stored && sn == buffer->head_sn) {
906
if (!amsdu || last_subframe)
907
buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
908
909
spin_unlock_bh(&buffer->lock);
910
return false;
911
}
912
913
/* put in reorder buffer */
914
index = sn % baid_data->buf_size;
915
__skb_queue_tail(&entries[index].frames, skb);
916
buffer->num_stored++;
917
918
/*
919
* We cannot trust NSSN for AMSDU sub-frames that are not the last.
920
* The reason is that NSSN advances on the first sub-frame, and may
921
* cause the reorder buffer to advance before all the sub-frames arrive.
922
* Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
923
* SN 1. NSSN for first sub frame will be 3 with the result of driver
924
* releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
925
* already ahead and it will be dropped.
926
* If the last sub-frame is not on this queue - we will get frame
927
* release notification with up to date NSSN.
928
* If this is the first frame that is stored in the buffer, the head_sn
929
* may be outdated. Update it based on the last NSSN to make sure it
930
* will be released when the frame release notification arrives.
931
*/
932
if (!amsdu || last_subframe)
933
iwl_mvm_release_frames(mvm, sta, napi, baid_data,
934
buffer, nssn);
935
else if (buffer->num_stored == 1)
936
buffer->head_sn = nssn;
937
938
spin_unlock_bh(&buffer->lock);
939
return true;
940
941
drop:
942
kfree_skb(skb);
943
spin_unlock_bh(&buffer->lock);
944
return true;
945
}
946
947
static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
948
u32 reorder_data, u8 baid)
949
{
950
unsigned long now = jiffies;
951
unsigned long timeout;
952
struct iwl_mvm_baid_data *data;
953
954
rcu_read_lock();
955
956
data = rcu_dereference(mvm->baid_map[baid]);
957
if (!data) {
958
IWL_DEBUG_RX(mvm,
959
"Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
960
baid, reorder_data);
961
goto out;
962
}
963
964
if (!data->timeout)
965
goto out;
966
967
timeout = data->timeout;
968
/*
969
* Do not update last rx all the time to avoid cache bouncing
970
* between the rx queues.
971
* Update it every timeout. Worst case is the session will
972
* expire after ~ 2 * timeout, which doesn't matter that much.
973
*/
974
if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
975
/* Update is atomic */
976
data->last_rx = now;
977
978
out:
979
rcu_read_unlock();
980
}
981
982
static void iwl_mvm_flip_address(u8 *addr)
983
{
984
int i;
985
u8 mac_addr[ETH_ALEN];
986
987
for (i = 0; i < ETH_ALEN; i++)
988
mac_addr[i] = addr[ETH_ALEN - i - 1];
989
ether_addr_copy(addr, mac_addr);
990
}
991
992
struct iwl_mvm_rx_phy_data {
993
enum iwl_rx_phy_info_type info_type;
994
__le32 d0, d1, d2, d3, eht_d4, d5;
995
__le16 d4;
996
bool with_data;
997
bool first_subframe;
998
__le32 rx_vec[4];
999
1000
u32 rate_n_flags;
1001
u32 gp2_on_air_rise;
1002
u16 phy_info;
1003
u8 energy_a, energy_b;
1004
u8 channel;
1005
};
1006
1007
static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1008
struct iwl_mvm_rx_phy_data *phy_data,
1009
struct ieee80211_radiotap_he_mu *he_mu)
1010
{
1011
u32 phy_data2 = le32_to_cpu(phy_data->d2);
1012
u32 phy_data3 = le32_to_cpu(phy_data->d3);
1013
u16 phy_data4 = le16_to_cpu(phy_data->d4);
1014
u32 rate_n_flags = phy_data->rate_n_flags;
1015
1016
if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1017
he_mu->flags1 |=
1018
cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1019
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1020
1021
he_mu->flags1 |=
1022
le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1023
phy_data4),
1024
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1025
1026
he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1027
phy_data2);
1028
he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1029
phy_data3);
1030
he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1031
phy_data2);
1032
he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1033
phy_data3);
1034
}
1035
1036
if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1037
(rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
1038
he_mu->flags1 |=
1039
cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1040
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1041
1042
he_mu->flags2 |=
1043
le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1044
phy_data4),
1045
IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1046
1047
he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1048
phy_data2);
1049
he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1050
phy_data3);
1051
he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1052
phy_data2);
1053
he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1054
phy_data3);
1055
}
1056
}
1057
1058
static void
1059
iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1060
struct ieee80211_radiotap_he *he,
1061
struct ieee80211_radiotap_he_mu *he_mu,
1062
struct ieee80211_rx_status *rx_status)
1063
{
1064
/*
1065
* Unfortunately, we have to leave the mac80211 data
1066
* incorrect for the case that we receive an HE-MU
1067
* transmission and *don't* have the HE phy data (due
1068
* to the bits being used for TSF). This shouldn't
1069
* happen though as management frames where we need
1070
* the TSF/timers are not be transmitted in HE-MU.
1071
*/
1072
u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1073
u32 rate_n_flags = phy_data->rate_n_flags;
1074
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1075
u8 offs = 0;
1076
1077
rx_status->bw = RATE_INFO_BW_HE_RU;
1078
1079
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1080
1081
switch (ru) {
1082
case 0 ... 36:
1083
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1084
offs = ru;
1085
break;
1086
case 37 ... 52:
1087
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1088
offs = ru - 37;
1089
break;
1090
case 53 ... 60:
1091
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1092
offs = ru - 53;
1093
break;
1094
case 61 ... 64:
1095
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1096
offs = ru - 61;
1097
break;
1098
case 65 ... 66:
1099
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1100
offs = ru - 65;
1101
break;
1102
case 67:
1103
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1104
break;
1105
case 68:
1106
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1107
break;
1108
}
1109
he->data2 |= le16_encode_bits(offs,
1110
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1111
he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1112
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1113
if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1114
he->data2 |=
1115
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1116
1117
#define CHECK_BW(bw) \
1118
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1119
RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1120
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1121
RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1122
CHECK_BW(20);
1123
CHECK_BW(40);
1124
CHECK_BW(80);
1125
CHECK_BW(160);
1126
1127
if (he_mu)
1128
he_mu->flags2 |=
1129
le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1130
rate_n_flags),
1131
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1132
else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1133
he->data6 |=
1134
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1135
le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1136
rate_n_flags),
1137
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1138
}
1139
1140
static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1141
struct iwl_mvm_rx_phy_data *phy_data,
1142
struct ieee80211_radiotap_he *he,
1143
struct ieee80211_radiotap_he_mu *he_mu,
1144
struct ieee80211_rx_status *rx_status,
1145
int queue)
1146
{
1147
switch (phy_data->info_type) {
1148
case IWL_RX_PHY_INFO_TYPE_NONE:
1149
case IWL_RX_PHY_INFO_TYPE_CCK:
1150
case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1151
case IWL_RX_PHY_INFO_TYPE_HT:
1152
case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1153
case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1154
case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1155
case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1156
case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1157
case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1158
return;
1159
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1160
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1161
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1162
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1163
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1164
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1165
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1166
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1167
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1168
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1169
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1170
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1171
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1172
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1173
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1174
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1175
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1176
fallthrough;
1177
case IWL_RX_PHY_INFO_TYPE_HE_SU:
1178
case IWL_RX_PHY_INFO_TYPE_HE_MU:
1179
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1180
case IWL_RX_PHY_INFO_TYPE_HE_TB:
1181
/* HE common */
1182
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1183
IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1184
IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1185
he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1186
IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1187
IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1188
IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1189
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1190
IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1191
IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1192
if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1193
phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1194
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1195
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1196
IWL_RX_PHY_DATA0_HE_UPLINK),
1197
IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1198
}
1199
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1200
IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1201
IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1202
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1203
IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1204
IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1205
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1206
IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1207
IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1208
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1209
IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1210
IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1211
he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1212
IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1213
IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1214
he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1215
IWL_RX_PHY_DATA0_HE_DOPPLER),
1216
IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1217
break;
1218
}
1219
1220
switch (phy_data->info_type) {
1221
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1222
case IWL_RX_PHY_INFO_TYPE_HE_MU:
1223
case IWL_RX_PHY_INFO_TYPE_HE_SU:
1224
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1225
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1226
IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1227
IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1228
break;
1229
default:
1230
/* nothing here */
1231
break;
1232
}
1233
1234
switch (phy_data->info_type) {
1235
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1236
he_mu->flags1 |=
1237
le16_encode_bits(le16_get_bits(phy_data->d4,
1238
IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1239
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1240
he_mu->flags1 |=
1241
le16_encode_bits(le16_get_bits(phy_data->d4,
1242
IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1243
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1244
he_mu->flags2 |=
1245
le16_encode_bits(le16_get_bits(phy_data->d4,
1246
IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1247
IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1248
iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1249
fallthrough;
1250
case IWL_RX_PHY_INFO_TYPE_HE_MU:
1251
he_mu->flags2 |=
1252
le16_encode_bits(le32_get_bits(phy_data->d1,
1253
IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1254
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1255
he_mu->flags2 |=
1256
le16_encode_bits(le32_get_bits(phy_data->d1,
1257
IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1258
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1259
fallthrough;
1260
case IWL_RX_PHY_INFO_TYPE_HE_TB:
1261
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1262
iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1263
break;
1264
case IWL_RX_PHY_INFO_TYPE_HE_SU:
1265
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1266
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1267
IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1268
IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1269
break;
1270
default:
1271
/* nothing */
1272
break;
1273
}
1274
}
1275
1276
#define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1277
le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1278
1279
#define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1280
typeof(enc_bits) _enc_bits = enc_bits; \
1281
typeof(usig) _usig = usig; \
1282
(_usig)->mask |= cpu_to_le32(_enc_bits); \
1283
(_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1284
} while (0)
1285
1286
#define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1287
eht->data[(rt_data)] |= \
1288
(cpu_to_le32 \
1289
(IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1290
LE32_DEC_ENC(data ## fw_data, \
1291
IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1292
IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1293
1294
#define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1295
__IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1296
1297
#define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1298
#define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1299
#define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1300
#define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1301
#define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1302
#define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1303
#define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1304
#define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1305
1306
#define IWL_RX_RU_DATA_A1 2
1307
#define IWL_RX_RU_DATA_A2 2
1308
#define IWL_RX_RU_DATA_B1 2
1309
#define IWL_RX_RU_DATA_B2 4
1310
#define IWL_RX_RU_DATA_C1 3
1311
#define IWL_RX_RU_DATA_C2 3
1312
#define IWL_RX_RU_DATA_D1 4
1313
#define IWL_RX_RU_DATA_D2 4
1314
1315
#define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1316
_IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1317
rt_ru, \
1318
IWL_RX_RU_DATA_ ## fw_ru, \
1319
fw_ru)
1320
1321
static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1322
struct iwl_mvm_rx_phy_data *phy_data,
1323
struct ieee80211_rx_status *rx_status,
1324
struct ieee80211_radiotap_eht *eht,
1325
struct ieee80211_radiotap_eht_usig *usig)
1326
{
1327
if (phy_data->with_data) {
1328
__le32 data1 = phy_data->d1;
1329
__le32 data2 = phy_data->d2;
1330
__le32 data3 = phy_data->d3;
1331
__le32 data4 = phy_data->eht_d4;
1332
__le32 data5 = phy_data->d5;
1333
u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1334
1335
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1336
IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1337
IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1338
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1339
IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1340
IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1341
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1342
IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1343
IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1344
IWL_MVM_ENC_USIG_VALUE_MASK
1345
(usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1346
IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1347
1348
eht->user_info[0] |=
1349
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1350
LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1351
IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1352
1353
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1354
eht->data[7] |= LE32_DEC_ENC
1355
(data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1356
IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1357
1358
/*
1359
* Hardware labels the content channels/RU allocation values
1360
* as follows:
1361
* Content Channel 1 Content Channel 2
1362
* 20 MHz: A1
1363
* 40 MHz: A1 B1
1364
* 80 MHz: A1 C1 B1 D1
1365
* 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1366
* 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1367
*
1368
* However firmware can only give us A1-D2, so the higher
1369
* frequencies are missing.
1370
*/
1371
1372
switch (phy_bw) {
1373
case RATE_MCS_CHAN_WIDTH_320:
1374
/* additional values are missing in RX metadata */
1375
case RATE_MCS_CHAN_WIDTH_160:
1376
/* content channel 1 */
1377
IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1378
IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1379
/* content channel 2 */
1380
IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1381
IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1382
fallthrough;
1383
case RATE_MCS_CHAN_WIDTH_80:
1384
/* content channel 1 */
1385
IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1386
/* content channel 2 */
1387
IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1388
fallthrough;
1389
case RATE_MCS_CHAN_WIDTH_40:
1390
/* content channel 2 */
1391
IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1392
fallthrough;
1393
case RATE_MCS_CHAN_WIDTH_20:
1394
IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1395
break;
1396
}
1397
} else {
1398
__le32 usig_a1 = phy_data->rx_vec[0];
1399
__le32 usig_a2 = phy_data->rx_vec[1];
1400
1401
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1402
IWL_RX_USIG_A1_DISREGARD,
1403
IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1404
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1405
IWL_RX_USIG_A1_VALIDATE,
1406
IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1407
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1408
IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1409
IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1410
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1411
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1412
IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1413
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1414
IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1415
IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1416
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1417
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1418
IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1419
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1420
IWL_RX_USIG_A2_EHT_SIG_MCS,
1421
IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1422
IWL_MVM_ENC_USIG_VALUE_MASK
1423
(usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1424
IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1425
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1426
IWL_RX_USIG_A2_EHT_CRC_OK,
1427
IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1428
}
1429
}
1430
1431
static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1432
struct iwl_mvm_rx_phy_data *phy_data,
1433
struct ieee80211_rx_status *rx_status,
1434
struct ieee80211_radiotap_eht *eht,
1435
struct ieee80211_radiotap_eht_usig *usig)
1436
{
1437
if (phy_data->with_data) {
1438
__le32 data5 = phy_data->d5;
1439
1440
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1441
IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1442
IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1443
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1444
IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1445
IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1446
1447
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1448
IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1449
IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1450
} else {
1451
__le32 usig_a1 = phy_data->rx_vec[0];
1452
__le32 usig_a2 = phy_data->rx_vec[1];
1453
1454
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1455
IWL_RX_USIG_A1_DISREGARD,
1456
IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1457
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1458
IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1459
IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1460
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1461
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1462
IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1463
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1464
IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1465
IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1466
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1467
IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1468
IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1469
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1470
IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1471
IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1472
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1473
IWL_RX_USIG_A2_EHT_CRC_OK,
1474
IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1475
}
1476
}
1477
1478
static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1479
struct ieee80211_rx_status *rx_status,
1480
struct ieee80211_radiotap_eht *eht)
1481
{
1482
u32 ru = le32_get_bits(eht->data[8],
1483
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1484
enum nl80211_eht_ru_alloc nl_ru;
1485
1486
/* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1487
* in an EHT variant User Info field
1488
*/
1489
1490
switch (ru) {
1491
case 0 ... 36:
1492
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1493
break;
1494
case 37 ... 52:
1495
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1496
break;
1497
case 53 ... 60:
1498
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1499
break;
1500
case 61 ... 64:
1501
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1502
break;
1503
case 65 ... 66:
1504
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1505
break;
1506
case 67:
1507
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1508
break;
1509
case 68:
1510
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1511
break;
1512
case 69:
1513
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1514
break;
1515
case 70 ... 81:
1516
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1517
break;
1518
case 82 ... 89:
1519
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1520
break;
1521
case 90 ... 93:
1522
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1523
break;
1524
case 94 ... 95:
1525
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1526
break;
1527
case 96 ... 99:
1528
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1529
break;
1530
case 100 ... 103:
1531
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1532
break;
1533
case 104:
1534
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1535
break;
1536
case 105 ... 106:
1537
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1538
break;
1539
default:
1540
return;
1541
}
1542
1543
rx_status->bw = RATE_INFO_BW_EHT_RU;
1544
rx_status->eht.ru = nl_ru;
1545
}
1546
1547
static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1548
struct iwl_mvm_rx_phy_data *phy_data,
1549
struct ieee80211_rx_status *rx_status,
1550
struct ieee80211_radiotap_eht *eht,
1551
struct ieee80211_radiotap_eht_usig *usig)
1552
1553
{
1554
__le32 data0 = phy_data->d0;
1555
__le32 data1 = phy_data->d1;
1556
__le32 usig_a1 = phy_data->rx_vec[0];
1557
u8 info_type = phy_data->info_type;
1558
1559
/* Not in EHT range */
1560
if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1561
info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1562
return;
1563
1564
usig->common |= cpu_to_le32
1565
(IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1566
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1567
if (phy_data->with_data) {
1568
usig->common |= LE32_DEC_ENC(data0,
1569
IWL_RX_PHY_DATA0_EHT_UPLINK,
1570
IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1571
usig->common |= LE32_DEC_ENC(data0,
1572
IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1573
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1574
} else {
1575
usig->common |= LE32_DEC_ENC(usig_a1,
1576
IWL_RX_USIG_A1_UL_FLAG,
1577
IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1578
usig->common |= LE32_DEC_ENC(usig_a1,
1579
IWL_RX_USIG_A1_BSS_COLOR,
1580
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1581
}
1582
1583
if (fw_has_capa(&mvm->fw->ucode_capa,
1584
IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1585
usig->common |=
1586
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1587
usig->common |=
1588
LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1589
IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1590
}
1591
1592
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1593
eht->data[0] |= LE32_DEC_ENC(data0,
1594
IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1595
IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1596
1597
/* All RU allocating size/index is in TB format */
1598
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1599
eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1600
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1601
eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1602
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1603
eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1604
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1605
1606
iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1607
1608
/* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1609
* which is on only in case of monitor mode so no need to check monitor
1610
* mode
1611
*/
1612
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1613
eht->data[1] |=
1614
le32_encode_bits(mvm->monitor_p80,
1615
IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1616
1617
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1618
if (phy_data->with_data)
1619
usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1620
IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1621
else
1622
usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1623
IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1624
1625
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1626
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1627
IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1628
1629
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1630
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1631
IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1632
1633
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1634
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1635
IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1636
1637
/* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1638
1639
if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1640
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1641
1642
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1643
usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1644
IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1645
1646
/*
1647
* TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1648
* IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1649
*/
1650
1651
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1652
eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1653
IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1654
1655
if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1656
info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1657
iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1658
1659
if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1660
info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1661
iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1662
}
1663
1664
static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1665
struct iwl_mvm_rx_phy_data *phy_data,
1666
int queue)
1667
{
1668
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1669
1670
struct ieee80211_radiotap_eht *eht;
1671
struct ieee80211_radiotap_eht_usig *usig;
1672
size_t eht_len = sizeof(*eht);
1673
1674
u32 rate_n_flags = phy_data->rate_n_flags;
1675
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1676
/* EHT and HE have the same valus for LTF */
1677
u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1678
u16 phy_info = phy_data->phy_info;
1679
u32 bw;
1680
1681
/* u32 for 1 user_info */
1682
if (phy_data->with_data)
1683
eht_len += sizeof(u32);
1684
1685
eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1686
1687
usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1688
sizeof(*usig));
1689
rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1690
usig->common |=
1691
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1692
1693
/* specific handling for 320MHz */
1694
bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1695
if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1696
bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1697
le32_to_cpu(phy_data->d0));
1698
1699
usig->common |= cpu_to_le32
1700
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1701
1702
/* report the AMPDU-EOF bit on single frames */
1703
if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1704
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1705
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1706
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1707
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1708
}
1709
1710
/* update aggregation data for monitor sake on default queue */
1711
if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1712
(phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1713
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1714
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1715
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1716
}
1717
1718
if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1719
iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1720
1721
#define CHECK_TYPE(F) \
1722
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1723
(RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1724
1725
CHECK_TYPE(SU);
1726
CHECK_TYPE(EXT_SU);
1727
CHECK_TYPE(MU);
1728
CHECK_TYPE(TRIG);
1729
1730
switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1731
case 0:
1732
if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1733
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1734
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1735
} else {
1736
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1737
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1738
}
1739
break;
1740
case 1:
1741
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1742
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1743
break;
1744
case 2:
1745
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1746
if (he_type == RATE_MCS_HE_TYPE_TRIG)
1747
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1748
else
1749
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1750
break;
1751
case 3:
1752
if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1753
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1754
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1755
}
1756
break;
1757
default:
1758
/* nothing here */
1759
break;
1760
}
1761
1762
if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1763
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1764
eht->data[0] |= cpu_to_le32
1765
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1766
ltf) |
1767
FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1768
rx_status->eht.gi));
1769
}
1770
1771
1772
if (!phy_data->with_data) {
1773
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1774
IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1775
eht->data[7] |=
1776
le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1777
RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1778
IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1779
if (rate_n_flags & RATE_MCS_BF_MSK)
1780
eht->data[7] |=
1781
cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1782
} else {
1783
eht->user_info[0] |=
1784
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1785
IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1786
IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1787
IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1788
IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1789
1790
if (rate_n_flags & RATE_MCS_BF_MSK)
1791
eht->user_info[0] |=
1792
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1793
1794
if (rate_n_flags & RATE_MCS_LDPC_MSK)
1795
eht->user_info[0] |=
1796
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1797
1798
eht->user_info[0] |= cpu_to_le32
1799
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1800
FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1801
rate_n_flags)) |
1802
FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1803
FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1804
}
1805
}
1806
1807
static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1808
struct iwl_mvm_rx_phy_data *phy_data,
1809
int queue)
1810
{
1811
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1812
struct ieee80211_radiotap_he *he = NULL;
1813
struct ieee80211_radiotap_he_mu *he_mu = NULL;
1814
u32 rate_n_flags = phy_data->rate_n_flags;
1815
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1816
u8 ltf;
1817
static const struct ieee80211_radiotap_he known = {
1818
.data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1819
IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1820
IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1821
IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1822
.data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1823
IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1824
};
1825
static const struct ieee80211_radiotap_he_mu mu_known = {
1826
.flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1827
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1828
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1829
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1830
.flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1831
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1832
};
1833
u16 phy_info = phy_data->phy_info;
1834
1835
he = skb_put_data(skb, &known, sizeof(known));
1836
rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1837
1838
if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1839
phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1840
he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1841
rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1842
}
1843
1844
/* report the AMPDU-EOF bit on single frames */
1845
if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1846
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1847
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1848
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1849
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1850
}
1851
1852
if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1853
iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1854
queue);
1855
1856
/* update aggregation data for monitor sake on default queue */
1857
if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1858
(phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1859
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1860
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1861
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1862
}
1863
1864
if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1865
rate_n_flags & RATE_MCS_HE_106T_MSK) {
1866
rx_status->bw = RATE_INFO_BW_HE_RU;
1867
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1868
}
1869
1870
/* actually data is filled in mac80211 */
1871
if (he_type == RATE_MCS_HE_TYPE_SU ||
1872
he_type == RATE_MCS_HE_TYPE_EXT_SU)
1873
he->data1 |=
1874
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1875
1876
#define CHECK_TYPE(F) \
1877
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1878
(RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1879
1880
CHECK_TYPE(SU);
1881
CHECK_TYPE(EXT_SU);
1882
CHECK_TYPE(MU);
1883
CHECK_TYPE(TRIG);
1884
1885
he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1886
1887
if (rate_n_flags & RATE_MCS_BF_MSK)
1888
he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1889
1890
switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1891
RATE_MCS_HE_GI_LTF_POS) {
1892
case 0:
1893
if (he_type == RATE_MCS_HE_TYPE_TRIG)
1894
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1895
else
1896
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1897
if (he_type == RATE_MCS_HE_TYPE_MU)
1898
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1899
else
1900
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1901
break;
1902
case 1:
1903
if (he_type == RATE_MCS_HE_TYPE_TRIG)
1904
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1905
else
1906
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1907
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1908
break;
1909
case 2:
1910
if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1911
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1912
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1913
} else {
1914
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1915
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1916
}
1917
break;
1918
case 3:
1919
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1920
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1921
break;
1922
case 4:
1923
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1924
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1925
break;
1926
default:
1927
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1928
}
1929
1930
he->data5 |= le16_encode_bits(ltf,
1931
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1932
}
1933
1934
static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1935
struct iwl_mvm_rx_phy_data *phy_data)
1936
{
1937
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1938
struct ieee80211_radiotap_lsig *lsig;
1939
1940
switch (phy_data->info_type) {
1941
case IWL_RX_PHY_INFO_TYPE_HT:
1942
case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1943
case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1944
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1945
case IWL_RX_PHY_INFO_TYPE_HE_SU:
1946
case IWL_RX_PHY_INFO_TYPE_HE_MU:
1947
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1948
case IWL_RX_PHY_INFO_TYPE_HE_TB:
1949
case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1950
case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1951
case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1952
case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1953
lsig = skb_put(skb, sizeof(*lsig));
1954
lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1955
lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1956
IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1957
IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1958
rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1959
break;
1960
default:
1961
break;
1962
}
1963
}
1964
1965
struct iwl_rx_sta_csa {
1966
bool all_sta_unblocked;
1967
struct ieee80211_vif *vif;
1968
};
1969
1970
static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1971
{
1972
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1973
struct iwl_rx_sta_csa *rx_sta_csa = data;
1974
1975
if (mvmsta->vif != rx_sta_csa->vif)
1976
return;
1977
1978
if (mvmsta->disable_tx)
1979
rx_sta_csa->all_sta_unblocked = false;
1980
}
1981
1982
/*
1983
* Note: requires also rx_status->band to be prefilled, as well
1984
* as phy_data (apart from phy_data->info_type)
1985
* Note: desc/hdr may be NULL
1986
*/
1987
static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1988
struct iwl_rx_mpdu_desc *desc,
1989
struct ieee80211_hdr *hdr,
1990
struct sk_buff *skb,
1991
struct iwl_mvm_rx_phy_data *phy_data,
1992
int queue)
1993
{
1994
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1995
u32 rate_n_flags = phy_data->rate_n_flags;
1996
u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1997
u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1998
bool is_sgi;
1999
2000
phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
2001
2002
if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2003
phy_data->info_type =
2004
le32_get_bits(phy_data->d1,
2005
IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
2006
2007
/* This may be overridden by iwl_mvm_rx_he() to HE_RU */
2008
switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
2009
case RATE_MCS_CHAN_WIDTH_20:
2010
break;
2011
case RATE_MCS_CHAN_WIDTH_40:
2012
rx_status->bw = RATE_INFO_BW_40;
2013
break;
2014
case RATE_MCS_CHAN_WIDTH_80:
2015
rx_status->bw = RATE_INFO_BW_80;
2016
break;
2017
case RATE_MCS_CHAN_WIDTH_160:
2018
rx_status->bw = RATE_INFO_BW_160;
2019
break;
2020
case RATE_MCS_CHAN_WIDTH_320:
2021
rx_status->bw = RATE_INFO_BW_320;
2022
break;
2023
}
2024
2025
/* must be before L-SIG data */
2026
if (format == RATE_MCS_MOD_TYPE_HE)
2027
iwl_mvm_rx_he(mvm, skb, phy_data, queue);
2028
2029
iwl_mvm_decode_lsig(skb, phy_data);
2030
2031
rx_status->device_timestamp = phy_data->gp2_on_air_rise;
2032
2033
if (mvm->rx_ts_ptp && mvm->monitor_on) {
2034
u64 adj_time =
2035
iwl_mvm_ptp_get_adj_time(mvm, phy_data->gp2_on_air_rise * NSEC_PER_USEC);
2036
2037
rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
2038
rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
2039
rx_status->flag &= ~RX_FLAG_MACTIME;
2040
}
2041
2042
rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
2043
rx_status->band);
2044
iwl_mvm_get_signal_strength(mvm, desc, hdr, rx_status, rate_n_flags,
2045
phy_data->energy_a, phy_data->energy_b);
2046
2047
/* using TLV format and must be after all fixed len fields */
2048
if (format == RATE_MCS_MOD_TYPE_EHT)
2049
iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
2050
2051
if (unlikely(mvm->monitor_on))
2052
iwl_mvm_add_rtap_sniffer_config(mvm, skb);
2053
2054
is_sgi = format == RATE_MCS_MOD_TYPE_HE ?
2055
iwl_he_is_sgi(rate_n_flags) :
2056
rate_n_flags & RATE_MCS_SGI_MSK;
2057
2058
if (!(format == RATE_MCS_MOD_TYPE_CCK) && is_sgi)
2059
rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2060
2061
if (rate_n_flags & RATE_MCS_LDPC_MSK)
2062
rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2063
2064
switch (format) {
2065
case RATE_MCS_MOD_TYPE_VHT:
2066
rx_status->encoding = RX_ENC_VHT;
2067
break;
2068
case RATE_MCS_MOD_TYPE_HE:
2069
rx_status->encoding = RX_ENC_HE;
2070
rx_status->he_dcm =
2071
!!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2072
break;
2073
case RATE_MCS_MOD_TYPE_EHT:
2074
rx_status->encoding = RX_ENC_EHT;
2075
break;
2076
}
2077
2078
switch (format) {
2079
case RATE_MCS_MOD_TYPE_HT:
2080
rx_status->encoding = RX_ENC_HT;
2081
rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2082
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2083
break;
2084
case RATE_MCS_MOD_TYPE_VHT:
2085
case RATE_MCS_MOD_TYPE_HE:
2086
case RATE_MCS_MOD_TYPE_EHT:
2087
rx_status->nss =
2088
u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2089
rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2090
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2091
break;
2092
default: {
2093
int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2094
rx_status->band);
2095
2096
rx_status->rate_idx = rate;
2097
2098
if ((rate < 0 || rate > 0xFF)) {
2099
rx_status->rate_idx = 0;
2100
if (net_ratelimit())
2101
IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2102
rate_n_flags, rx_status->band);
2103
}
2104
2105
break;
2106
}
2107
}
2108
}
2109
2110
void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2111
struct iwl_rx_cmd_buffer *rxb, int queue)
2112
{
2113
struct ieee80211_rx_status *rx_status;
2114
struct iwl_rx_packet *pkt = rxb_addr(rxb);
2115
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2116
struct ieee80211_hdr *hdr;
2117
u32 len;
2118
u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2119
struct ieee80211_sta *sta = NULL;
2120
struct sk_buff *skb;
2121
u8 crypt_len = 0;
2122
u8 sta_id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2123
size_t desc_size;
2124
struct iwl_mvm_rx_phy_data phy_data = {};
2125
u32 format;
2126
2127
if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2128
return;
2129
2130
if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2131
desc_size = sizeof(*desc);
2132
else
2133
desc_size = IWL_RX_DESC_SIZE_V1;
2134
2135
if (unlikely(pkt_len < desc_size)) {
2136
IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2137
return;
2138
}
2139
2140
if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2141
phy_data.rate_n_flags =
2142
iwl_mvm_v3_rate_from_fw(desc->v3.rate_n_flags,
2143
mvm->fw_rates_ver);
2144
phy_data.channel = desc->v3.channel;
2145
phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2146
phy_data.energy_a = desc->v3.energy_a;
2147
phy_data.energy_b = desc->v3.energy_b;
2148
2149
phy_data.d0 = desc->v3.phy_data0;
2150
phy_data.d1 = desc->v3.phy_data1;
2151
phy_data.d2 = desc->v3.phy_data2;
2152
phy_data.d3 = desc->v3.phy_data3;
2153
phy_data.eht_d4 = desc->phy_eht_data4;
2154
phy_data.d5 = desc->v3.phy_data5;
2155
} else {
2156
phy_data.rate_n_flags =
2157
iwl_mvm_v3_rate_from_fw(desc->v1.rate_n_flags,
2158
mvm->fw_rates_ver);
2159
phy_data.channel = desc->v1.channel;
2160
phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2161
phy_data.energy_a = desc->v1.energy_a;
2162
phy_data.energy_b = desc->v1.energy_b;
2163
2164
phy_data.d0 = desc->v1.phy_data0;
2165
phy_data.d1 = desc->v1.phy_data1;
2166
phy_data.d2 = desc->v1.phy_data2;
2167
phy_data.d3 = desc->v1.phy_data3;
2168
}
2169
2170
format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2171
2172
len = le16_to_cpu(desc->mpdu_len);
2173
2174
if (unlikely(len + desc_size > pkt_len)) {
2175
IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2176
return;
2177
}
2178
2179
phy_data.with_data = true;
2180
phy_data.phy_info = le16_to_cpu(desc->phy_info);
2181
phy_data.d4 = desc->phy_data4;
2182
2183
hdr = (void *)(pkt->data + desc_size);
2184
/* Dont use dev_alloc_skb(), we'll have enough headroom once
2185
* ieee80211_hdr pulled.
2186
*/
2187
skb = alloc_skb(128, GFP_ATOMIC);
2188
if (!skb) {
2189
IWL_ERR(mvm, "alloc_skb failed\n");
2190
return;
2191
}
2192
2193
if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2194
/*
2195
* If the device inserted padding it means that (it thought)
2196
* the 802.11 header wasn't a multiple of 4 bytes long. In
2197
* this case, reserve two bytes at the start of the SKB to
2198
* align the payload properly in case we end up copying it.
2199
*/
2200
skb_reserve(skb, 2);
2201
}
2202
2203
rx_status = IEEE80211_SKB_RXCB(skb);
2204
2205
/*
2206
* Keep packets with CRC errors (and with overrun) for monitor mode
2207
* (otherwise the firmware discards them) but mark them as bad.
2208
*/
2209
if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2210
!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2211
IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2212
le32_to_cpu(desc->status));
2213
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2214
}
2215
2216
/* set the preamble flag if appropriate */
2217
if (format == RATE_MCS_MOD_TYPE_CCK &&
2218
phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2219
rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2220
2221
if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2222
u64 tsf_on_air_rise;
2223
2224
if (mvm->trans->mac_cfg->device_family >=
2225
IWL_DEVICE_FAMILY_AX210)
2226
tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2227
else
2228
tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2229
2230
rx_status->mactime = tsf_on_air_rise;
2231
/* TSF as indicated by the firmware is at INA time */
2232
rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2233
}
2234
2235
if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2236
u8 band = u8_get_bits(desc->mac_phy_band,
2237
IWL_RX_MPDU_MAC_PHY_BAND_BAND_MASK);
2238
2239
rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2240
} else {
2241
rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2242
NL80211_BAND_2GHZ;
2243
}
2244
2245
/* update aggregation data for monitor sake on default queue */
2246
if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2247
bool toggle_bit;
2248
2249
toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2250
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2251
/*
2252
* Toggle is switched whenever new aggregation starts. Make
2253
* sure ampdu_reference is never 0 so we can later use it to
2254
* see if the frame was really part of an A-MPDU or not.
2255
*/
2256
if (toggle_bit != mvm->ampdu_toggle) {
2257
mvm->ampdu_ref++;
2258
if (mvm->ampdu_ref == 0)
2259
mvm->ampdu_ref++;
2260
mvm->ampdu_toggle = toggle_bit;
2261
phy_data.first_subframe = true;
2262
}
2263
rx_status->ampdu_reference = mvm->ampdu_ref;
2264
}
2265
2266
rcu_read_lock();
2267
2268
if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2269
if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2270
struct ieee80211_link_sta *link_sta;
2271
2272
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2273
if (IS_ERR(sta))
2274
sta = NULL;
2275
link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
2276
2277
if (sta && sta->valid_links && link_sta) {
2278
rx_status->link_valid = 1;
2279
rx_status->link_id = link_sta->link_id;
2280
}
2281
}
2282
} else if (!is_multicast_ether_addr(hdr->addr2)) {
2283
/*
2284
* This is fine since we prevent two stations with the same
2285
* address from being added.
2286
*/
2287
sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2288
}
2289
2290
if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2291
le32_to_cpu(pkt->len_n_flags), queue,
2292
&crypt_len)) {
2293
kfree_skb(skb);
2294
goto out;
2295
}
2296
2297
iwl_mvm_rx_fill_status(mvm, desc, hdr, skb, &phy_data, queue);
2298
2299
if (sta) {
2300
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2301
struct ieee80211_vif *tx_blocked_vif =
2302
rcu_dereference(mvm->csa_tx_blocked_vif);
2303
u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2304
IWL_RX_MPDU_REORDER_BAID_MASK) >>
2305
IWL_RX_MPDU_REORDER_BAID_SHIFT);
2306
struct iwl_fw_dbg_trigger_tlv *trig;
2307
struct ieee80211_vif *vif = mvmsta->vif;
2308
2309
if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2310
!is_multicast_ether_addr(hdr->addr1) &&
2311
ieee80211_is_data(hdr->frame_control) &&
2312
time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2313
schedule_delayed_work(&mvm->tcm.work, 0);
2314
2315
/*
2316
* We have tx blocked stations (with CS bit). If we heard
2317
* frames from a blocked station on a new channel we can
2318
* TX to it again.
2319
*/
2320
if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2321
struct iwl_mvm_vif *mvmvif =
2322
iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2323
struct iwl_rx_sta_csa rx_sta_csa = {
2324
.all_sta_unblocked = true,
2325
.vif = tx_blocked_vif,
2326
};
2327
2328
if (mvmvif->csa_target_freq == rx_status->freq)
2329
iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2330
false);
2331
ieee80211_iterate_stations_atomic(mvm->hw,
2332
iwl_mvm_rx_get_sta_block_tx,
2333
&rx_sta_csa);
2334
2335
if (rx_sta_csa.all_sta_unblocked) {
2336
RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2337
/* Unblock BCAST / MCAST station */
2338
iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2339
cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2340
}
2341
}
2342
2343
rs_update_last_rssi(mvm, mvmsta, rx_status);
2344
2345
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2346
ieee80211_vif_to_wdev(vif),
2347
FW_DBG_TRIGGER_RSSI);
2348
2349
if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2350
struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2351
s32 rssi;
2352
2353
rssi_trig = (void *)trig->data;
2354
rssi = le32_to_cpu(rssi_trig->rssi);
2355
2356
if (rx_status->signal < rssi)
2357
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2358
#if defined(__linux__)
2359
NULL);
2360
#elif defined(__FreeBSD__)
2361
"");
2362
#endif
2363
}
2364
2365
if (ieee80211_is_data(hdr->frame_control))
2366
iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2367
2368
if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2369
IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2370
le16_to_cpu(hdr->seq_ctrl));
2371
kfree_skb(skb);
2372
goto out;
2373
}
2374
2375
/*
2376
* Our hardware de-aggregates AMSDUs but copies the mac header
2377
* as it to the de-aggregated MPDUs. We need to turn off the
2378
* AMSDU bit in the QoS control ourselves.
2379
* In addition, HW reverses addr3 and addr4 - reverse it back.
2380
*/
2381
if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2382
!WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2383
u8 *qc = ieee80211_get_qos_ctl(hdr);
2384
2385
*qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2386
2387
if (mvm->trans->mac_cfg->device_family ==
2388
IWL_DEVICE_FAMILY_9000) {
2389
iwl_mvm_flip_address(hdr->addr3);
2390
2391
if (ieee80211_has_a4(hdr->frame_control))
2392
iwl_mvm_flip_address(hdr->addr4);
2393
}
2394
}
2395
if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2396
u32 reorder_data = le32_to_cpu(desc->reorder_data);
2397
2398
iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2399
}
2400
2401
if (ieee80211_is_data(hdr->frame_control)) {
2402
u8 sub_frame_idx = desc->amsdu_info &
2403
IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
2404
2405
/* 0 means not an A-MSDU, and 1 means a new A-MSDU */
2406
if (!sub_frame_idx || sub_frame_idx == 1)
2407
iwl_mvm_count_mpdu(mvmsta, sta_id, 1, false,
2408
queue);
2409
}
2410
}
2411
2412
/* management stuff on default queue */
2413
if (!queue) {
2414
if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2415
ieee80211_is_probe_resp(hdr->frame_control)) &&
2416
mvm->sched_scan_pass_all ==
2417
SCHED_SCAN_PASS_ALL_ENABLED))
2418
mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2419
2420
if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2421
ieee80211_is_probe_resp(hdr->frame_control)))
2422
rx_status->boottime_ns = ktime_get_boottime_ns();
2423
}
2424
2425
if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2426
kfree_skb(skb);
2427
goto out;
2428
}
2429
2430
if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2431
likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2432
likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2433
if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2434
(desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2435
!(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2436
rx_status->flag |= RX_FLAG_AMSDU_MORE;
2437
2438
iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2439
}
2440
out:
2441
rcu_read_unlock();
2442
}
2443
2444
void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2445
struct iwl_rx_cmd_buffer *rxb, int queue)
2446
{
2447
struct ieee80211_rx_status *rx_status;
2448
struct iwl_rx_packet *pkt = rxb_addr(rxb);
2449
struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2450
u32 rssi;
2451
struct ieee80211_sta *sta = NULL;
2452
struct sk_buff *skb;
2453
struct iwl_mvm_rx_phy_data phy_data;
2454
u32 format;
2455
2456
if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2457
return;
2458
2459
if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2460
return;
2461
2462
rssi = le32_to_cpu(desc->rssi);
2463
phy_data.d0 = desc->phy_info[0];
2464
phy_data.d1 = desc->phy_info[1];
2465
phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2466
phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2467
phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2468
phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2469
phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2470
phy_data.with_data = false;
2471
phy_data.rx_vec[0] = desc->rx_vec[0];
2472
phy_data.rx_vec[1] = desc->rx_vec[1];
2473
2474
phy_data.rate_n_flags = iwl_mvm_v3_rate_from_fw(desc->rate,
2475
mvm->fw_rates_ver);
2476
2477
format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2478
2479
if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2480
RX_NO_DATA_NOTIF, 0) >= 3) {
2481
if (unlikely(iwl_rx_packet_payload_len(pkt) <
2482
sizeof(struct iwl_rx_no_data_ver_3)))
2483
/* invalid len for ver 3 */
2484
return;
2485
phy_data.rx_vec[2] = desc->rx_vec[2];
2486
phy_data.rx_vec[3] = desc->rx_vec[3];
2487
} else {
2488
if (format == RATE_MCS_MOD_TYPE_EHT)
2489
/* no support for EHT before version 3 API */
2490
return;
2491
}
2492
2493
/* Dont use dev_alloc_skb(), we'll have enough headroom once
2494
* ieee80211_hdr pulled.
2495
*/
2496
skb = alloc_skb(128, GFP_ATOMIC);
2497
if (!skb) {
2498
IWL_ERR(mvm, "alloc_skb failed\n");
2499
return;
2500
}
2501
2502
rx_status = IEEE80211_SKB_RXCB(skb);
2503
2504
/* 0-length PSDU */
2505
rx_status->flag |= RX_FLAG_NO_PSDU;
2506
2507
/* mark as failed PLCP on any errors to skip checks in mac80211 */
2508
if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) !=
2509
RX_NO_DATA_INFO_ERR_NONE)
2510
rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
2511
2512
switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) {
2513
case RX_NO_DATA_INFO_TYPE_NDP:
2514
rx_status->zero_length_psdu_type =
2515
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2516
break;
2517
case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2518
case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2519
rx_status->zero_length_psdu_type =
2520
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2521
break;
2522
default:
2523
rx_status->zero_length_psdu_type =
2524
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2525
break;
2526
}
2527
2528
rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2529
NL80211_BAND_2GHZ;
2530
2531
iwl_mvm_rx_fill_status(mvm, NULL, NULL, skb, &phy_data, queue);
2532
2533
/* no more radio tap info should be put after this point.
2534
*
2535
* We mark it as mac header, for upper layers to know where
2536
* all radio tap header ends.
2537
*
2538
* Since data doesn't move data while putting data on skb and that is
2539
* the only way we use, data + len is the next place that hdr would be put
2540
*/
2541
skb_set_mac_header(skb, skb->len);
2542
2543
/*
2544
* Override the nss from the rx_vec since the rate_n_flags has
2545
* only 2 bits for the nss which gives a max of 4 ss but there
2546
* may be up to 8 spatial streams.
2547
*/
2548
switch (format) {
2549
case RATE_MCS_MOD_TYPE_VHT:
2550
rx_status->nss =
2551
le32_get_bits(desc->rx_vec[0],
2552
RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2553
break;
2554
case RATE_MCS_MOD_TYPE_HE:
2555
rx_status->nss =
2556
le32_get_bits(desc->rx_vec[0],
2557
RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2558
break;
2559
case RATE_MCS_MOD_TYPE_EHT:
2560
rx_status->nss =
2561
le32_get_bits(desc->rx_vec[2],
2562
RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2563
}
2564
2565
rcu_read_lock();
2566
ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2567
rcu_read_unlock();
2568
}
2569
2570
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2571
struct iwl_rx_cmd_buffer *rxb, int queue)
2572
{
2573
struct iwl_rx_packet *pkt = rxb_addr(rxb);
2574
struct iwl_frame_release *release = (void *)pkt->data;
2575
2576
if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2577
return;
2578
2579
iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2580
le16_to_cpu(release->nssn),
2581
queue);
2582
}
2583
2584
void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2585
struct iwl_rx_cmd_buffer *rxb, int queue)
2586
{
2587
struct iwl_rx_packet *pkt = rxb_addr(rxb);
2588
struct iwl_bar_frame_release *release = (void *)pkt->data;
2589
struct iwl_mvm_baid_data *baid_data;
2590
u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2591
unsigned int baid, nssn, sta_id, tid;
2592
2593
if (IWL_FW_CHECK(mvm, pkt_len < sizeof(*release),
2594
"Unexpected frame release notif size %d (expected %zu)\n",
2595
pkt_len, sizeof(*release)))
2596
return;
2597
2598
baid = le32_get_bits(release->ba_info,
2599
IWL_BAR_FRAME_RELEASE_BAID_MASK);
2600
nssn = le32_get_bits(release->ba_info,
2601
IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2602
sta_id = le32_get_bits(release->sta_tid,
2603
IWL_BAR_FRAME_RELEASE_STA_MASK);
2604
tid = le32_get_bits(release->sta_tid,
2605
IWL_BAR_FRAME_RELEASE_TID_MASK);
2606
2607
if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2608
baid >= ARRAY_SIZE(mvm->baid_map)))
2609
return;
2610
2611
rcu_read_lock();
2612
baid_data = rcu_dereference(mvm->baid_map[baid]);
2613
if (!baid_data) {
2614
IWL_DEBUG_RX(mvm,
2615
"Got valid BAID %d but not allocated, invalid BAR release!\n",
2616
baid);
2617
goto out;
2618
}
2619
2620
if (WARN(tid != baid_data->tid || sta_id > IWL_STATION_COUNT_MAX ||
2621
!(baid_data->sta_mask & BIT(sta_id)),
2622
"baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2623
baid, baid_data->sta_mask, baid_data->tid, sta_id,
2624
tid))
2625
goto out;
2626
2627
IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2628
nssn);
2629
2630
iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2631
out:
2632
rcu_read_unlock();
2633
}
2634
2635
void iwl_mvm_rx_beacon_filter_notif(struct iwl_mvm *mvm,
2636
struct iwl_rx_cmd_buffer *rxb)
2637
{
2638
struct iwl_rx_packet *pkt = rxb_addr(rxb);
2639
/* MAC or link ID in v1/v2, but driver has the IDs equal */
2640
struct iwl_beacon_filter_notif *notif = (void *)pkt->data;
2641
u32 id = le32_to_cpu(notif->link_id);
2642
struct iwl_mvm_vif *mvm_vif;
2643
struct ieee80211_vif *vif;
2644
2645
/* >= means AUX MAC/link ID, no energy correction needed then */
2646
if (IWL_FW_CHECK(mvm, id >= ARRAY_SIZE(mvm->vif_id_to_mac),
2647
"invalid link ID %d\n", id))
2648
return;
2649
2650
vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
2651
if (!vif)
2652
return;
2653
2654
mvm_vif = iwl_mvm_vif_from_mac80211(vif);
2655
2656
mvm_vif->deflink.average_beacon_energy =
2657
le32_to_cpu(notif->average_energy);
2658
}
2659
2660