1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2024 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 #include "iwl-trans.h"
10 #include "mvm.h"
11 #include "fw-api.h"
12 #include "time-sync.h"
13
iwl_mvm_check_pn(struct iwl_mvm * mvm,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)14 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
15 int queue, struct ieee80211_sta *sta)
16 {
17 struct iwl_mvm_sta *mvmsta;
18 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
19 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
20 struct iwl_mvm_key_pn *ptk_pn;
21 int res;
22 u8 tid, keyidx;
23 u8 pn[IEEE80211_CCMP_PN_LEN];
24 u8 *extiv;
25
26 /* do PN checking */
27
28 /* multicast and non-data only arrives on default queue */
29 if (!ieee80211_is_data(hdr->frame_control) ||
30 is_multicast_ether_addr(hdr->addr1))
31 return 0;
32
33 /* do not check PN for open AP */
34 if (!(stats->flag & RX_FLAG_DECRYPTED))
35 return 0;
36
37 /*
38 * avoid checking for default queue - we don't want to replicate
39 * all the logic that's necessary for checking the PN on fragmented
40 * frames, leave that to mac80211
41 */
42 if (queue == 0)
43 return 0;
44
45 /* if we are here - this for sure is either CCMP or GCMP */
46 if (IS_ERR_OR_NULL(sta)) {
47 IWL_DEBUG_DROP(mvm,
48 "expected hw-decrypted unicast frame for station\n");
49 return -1;
50 }
51
52 mvmsta = iwl_mvm_sta_from_mac80211(sta);
53
54 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
55 keyidx = extiv[3] >> 6;
56
57 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
58 if (!ptk_pn)
59 return -1;
60
61 if (ieee80211_is_data_qos(hdr->frame_control))
62 tid = ieee80211_get_tid(hdr);
63 else
64 tid = 0;
65
66 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
67 if (tid >= IWL_MAX_TID_COUNT)
68 return -1;
69
70 /* load pn */
71 pn[0] = extiv[7];
72 pn[1] = extiv[6];
73 pn[2] = extiv[5];
74 pn[3] = extiv[4];
75 pn[4] = extiv[1];
76 pn[5] = extiv[0];
77
78 res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
79 if (res < 0)
80 return -1;
81 if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
82 return -1;
83
84 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
85 stats->flag |= RX_FLAG_PN_VALIDATED;
86
87 return 0;
88 }
89
90 /* iwl_mvm_create_skb Adds the rxb to a new skb */
iwl_mvm_create_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_hdr * hdr,u16 len,u8 crypt_len,struct iwl_rx_cmd_buffer * rxb)91 static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
92 struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
93 struct iwl_rx_cmd_buffer *rxb)
94 {
95 struct iwl_rx_packet *pkt = rxb_addr(rxb);
96 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
97 unsigned int headlen, fraglen, pad_len = 0;
98 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
99 u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
100 IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
101
102 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
103 len -= 2;
104 pad_len = 2;
105 }
106
107 /*
108 * For non monitor interface strip the bytes the RADA might not have
109 * removed (it might be disabled, e.g. for mgmt frames). As a monitor
110 * interface cannot exist with other interfaces, this removal is safe
111 * and sufficient, in monitor mode there's no decryption being done.
112 */
113 if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
114 len -= mic_crc_len;
115
116 /* If frame is small enough to fit in skb->head, pull it completely.
117 * If not, only pull ieee80211_hdr (including crypto if present, and
118 * an additional 8 bytes for SNAP/ethertype, see below) so that
119 * splice() or TCP coalesce are more efficient.
120 *
121 * Since, in addition, ieee80211_data_to_8023() always pull in at
122 * least 8 bytes (possibly more for mesh) we can do the same here
123 * to save the cost of doing it later. That still doesn't pull in
124 * the actual IP header since the typical case has a SNAP header.
125 * If the latter changes (there are efforts in the standards group
126 * to do so) we should revisit this and ieee80211_data_to_8023().
127 */
128 headlen = (len <= skb_tailroom(skb)) ? len :
129 hdrlen + crypt_len + 8;
130
131 /* The firmware may align the packet to DWORD.
132 * The padding is inserted after the IV.
133 * After copying the header + IV skip the padding if
134 * present before copying packet data.
135 */
136 hdrlen += crypt_len;
137
138 if (unlikely(headlen < hdrlen))
139 return -EINVAL;
140
141 /* Since data doesn't move data while putting data on skb and that is
142 * the only way we use, data + len is the next place that hdr would be put
143 */
144 skb_set_mac_header(skb, skb->len);
145 skb_put_data(skb, hdr, hdrlen);
146 skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
147
148 /*
149 * If we did CHECKSUM_COMPLETE, the hardware only does it right for
150 * certain cases and starts the checksum after the SNAP. Check if
151 * this is the case - it's easier to just bail out to CHECKSUM_NONE
152 * in the cases the hardware didn't handle, since it's rare to see
153 * such packets, even though the hardware did calculate the checksum
154 * in this case, just starting after the MAC header instead.
155 *
156 * Starting from Bz hardware, it calculates starting directly after
157 * the MAC header, so that matches mac80211's expectation.
158 */
159 if (skb->ip_summed == CHECKSUM_COMPLETE) {
160 struct {
161 u8 hdr[6];
162 __be16 type;
163 } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
164
165 if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
166 !ether_addr_equal(shdr->hdr, rfc1042_header) ||
167 (shdr->type != htons(ETH_P_IP) &&
168 shdr->type != htons(ETH_P_ARP) &&
169 shdr->type != htons(ETH_P_IPV6) &&
170 shdr->type != htons(ETH_P_8021Q) &&
171 shdr->type != htons(ETH_P_PAE) &&
172 shdr->type != htons(ETH_P_TDLS))))
173 skb->ip_summed = CHECKSUM_NONE;
174 else if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
175 /* mac80211 assumes full CSUM including SNAP header */
176 skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
177 }
178
179 fraglen = len - headlen;
180
181 if (fraglen) {
182 int offset = (u8 *)hdr + headlen + pad_len -
183 (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
184
185 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
186 fraglen, rxb->truesize);
187 }
188
189 return 0;
190 }
191
192 /* put a TLV on the skb and return data pointer
193 *
194 * Also pad to 4 the len and zero out all data part
195 */
196 static void *
iwl_mvm_radiotap_put_tlv(struct sk_buff * skb,u16 type,u16 len)197 iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
198 {
199 struct ieee80211_radiotap_tlv *tlv;
200
201 tlv = skb_put(skb, sizeof(*tlv));
202 tlv->type = cpu_to_le16(type);
203 tlv->len = cpu_to_le16(len);
204 return skb_put_zero(skb, ALIGN(len, 4));
205 }
206
iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm * mvm,struct sk_buff * skb)207 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
208 struct sk_buff *skb)
209 {
210 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
211 struct ieee80211_radiotap_vendor_content *radiotap;
212 const u16 vendor_data_len = sizeof(mvm->cur_aid);
213
214 if (!mvm->cur_aid)
215 return;
216
217 radiotap = iwl_mvm_radiotap_put_tlv(skb,
218 IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
219 sizeof(*radiotap) + vendor_data_len);
220
221 /* Intel OUI */
222 radiotap->oui[0] = 0xf6;
223 radiotap->oui[1] = 0x54;
224 radiotap->oui[2] = 0x25;
225 /* radiotap sniffer config sub-namespace */
226 radiotap->oui_subtype = 1;
227 radiotap->vendor_type = 0;
228
229 /* fill the data now */
230 memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
231
232 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
233 }
234
235 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm * mvm,struct napi_struct * napi,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)236 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
237 struct napi_struct *napi,
238 struct sk_buff *skb, int queue,
239 struct ieee80211_sta *sta)
240 {
241 if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
242 kfree_skb(skb);
243 return;
244 }
245
246 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
247 }
248
iwl_mvm_get_signal_strength(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,u32 rate_n_flags,int energy_a,int energy_b)249 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
250 struct ieee80211_rx_status *rx_status,
251 u32 rate_n_flags, int energy_a,
252 int energy_b)
253 {
254 int max_energy;
255 u32 rate_flags = rate_n_flags;
256
257 energy_a = energy_a ? -energy_a : S8_MIN;
258 energy_b = energy_b ? -energy_b : S8_MIN;
259 max_energy = max(energy_a, energy_b);
260
261 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
262 energy_a, energy_b, max_energy);
263
264 rx_status->signal = max_energy;
265 rx_status->chains =
266 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
267 rx_status->chain_signal[0] = energy_a;
268 rx_status->chain_signal[1] = energy_b;
269 }
270
iwl_mvm_rx_mgmt_prot(struct ieee80211_sta * sta,struct ieee80211_hdr * hdr,struct iwl_rx_mpdu_desc * desc,u32 status,struct ieee80211_rx_status * stats)271 static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
272 struct ieee80211_hdr *hdr,
273 struct iwl_rx_mpdu_desc *desc,
274 u32 status,
275 struct ieee80211_rx_status *stats)
276 {
277 struct wireless_dev *wdev;
278 struct iwl_mvm_sta *mvmsta;
279 struct iwl_mvm_vif *mvmvif;
280 u8 keyid;
281 struct ieee80211_key_conf *key;
282 u32 len = le16_to_cpu(desc->mpdu_len);
283 const u8 *frame = (void *)hdr;
284
285 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
286 return 0;
287
288 /*
289 * For non-beacon, we don't really care. But beacons may
290 * be filtered out, and we thus need the firmware's replay
291 * detection, otherwise beacons the firmware previously
292 * filtered could be replayed, or something like that, and
293 * it can filter a lot - though usually only if nothing has
294 * changed.
295 */
296 if (!ieee80211_is_beacon(hdr->frame_control))
297 return 0;
298
299 if (!sta)
300 return -1;
301
302 mvmsta = iwl_mvm_sta_from_mac80211(sta);
303 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
304
305 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
306 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
307 goto report;
308
309 /* good cases */
310 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
311 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
312 stats->flag |= RX_FLAG_DECRYPTED;
313 return 0;
314 }
315
316 /*
317 * both keys will have the same cipher and MIC length, use
318 * whichever one is available
319 */
320 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
321 if (!key) {
322 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
323 if (!key)
324 goto report;
325 }
326
327 if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
328 goto report;
329
330 /* get the real key ID */
331 keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
332 /* and if that's the other key, look it up */
333 if (keyid != key->keyidx) {
334 /*
335 * shouldn't happen since firmware checked, but be safe
336 * in case the MIC length is wrong too, for example
337 */
338 if (keyid != 6 && keyid != 7)
339 return -1;
340 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
341 if (!key)
342 goto report;
343 }
344
345 /* Report status to mac80211 */
346 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
347 ieee80211_key_mic_failure(key);
348 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
349 ieee80211_key_replay(key);
350 report:
351 wdev = ieee80211_vif_to_wdev(mvmsta->vif);
352 if (wdev->netdev)
353 cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
354
355 return -1;
356 }
357
iwl_mvm_rx_crypto(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct ieee80211_hdr * hdr,struct ieee80211_rx_status * stats,u16 phy_info,struct iwl_rx_mpdu_desc * desc,u32 pkt_flags,int queue,u8 * crypt_len)358 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
359 struct ieee80211_hdr *hdr,
360 struct ieee80211_rx_status *stats, u16 phy_info,
361 struct iwl_rx_mpdu_desc *desc,
362 u32 pkt_flags, int queue, u8 *crypt_len)
363 {
364 u32 status = le32_to_cpu(desc->status);
365
366 /*
367 * Drop UNKNOWN frames in aggregation, unless in monitor mode
368 * (where we don't have the keys).
369 * We limit this to aggregation because in TKIP this is a valid
370 * scenario, since we may not have the (correct) TTAK (phase 1
371 * key) in the firmware.
372 */
373 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
374 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
375 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) {
376 IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
377 return -1;
378 }
379
380 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
381 !ieee80211_has_protected(hdr->frame_control)))
382 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
383
384 if (!ieee80211_has_protected(hdr->frame_control) ||
385 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
386 IWL_RX_MPDU_STATUS_SEC_NONE)
387 return 0;
388
389 /* TODO: handle packets encrypted with unknown alg */
390
391 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
392 case IWL_RX_MPDU_STATUS_SEC_CCM:
393 case IWL_RX_MPDU_STATUS_SEC_GCM:
394 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
395 /* alg is CCM: check MIC only */
396 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
397 IWL_DEBUG_DROP(mvm,
398 "Dropping packet, bad MIC (CCM/GCM)\n");
399 return -1;
400 }
401
402 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
403 *crypt_len = IEEE80211_CCMP_HDR_LEN;
404 return 0;
405 case IWL_RX_MPDU_STATUS_SEC_TKIP:
406 /* Don't drop the frame and decrypt it in SW */
407 if (!fw_has_api(&mvm->fw->ucode_capa,
408 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
409 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
410 return 0;
411
412 if (mvm->trans->trans_cfg->gen2 &&
413 !(status & RX_MPDU_RES_STATUS_MIC_OK))
414 stats->flag |= RX_FLAG_MMIC_ERROR;
415
416 *crypt_len = IEEE80211_TKIP_IV_LEN;
417 fallthrough;
418 case IWL_RX_MPDU_STATUS_SEC_WEP:
419 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
420 return -1;
421
422 stats->flag |= RX_FLAG_DECRYPTED;
423 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
424 IWL_RX_MPDU_STATUS_SEC_WEP)
425 *crypt_len = IEEE80211_WEP_IV_LEN;
426
427 if (pkt_flags & FH_RSCSR_RADA_EN) {
428 stats->flag |= RX_FLAG_ICV_STRIPPED;
429 if (mvm->trans->trans_cfg->gen2)
430 stats->flag |= RX_FLAG_MMIC_STRIPPED;
431 }
432
433 return 0;
434 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
435 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
436 return -1;
437 stats->flag |= RX_FLAG_DECRYPTED;
438 return 0;
439 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
440 break;
441 default:
442 /*
443 * Sometimes we can get frames that were not decrypted
444 * because the firmware didn't have the keys yet. This can
445 * happen after connection where we can get multicast frames
446 * before the GTK is installed.
447 * Silently drop those frames.
448 * Also drop un-decrypted frames in monitor mode.
449 */
450 if (!is_multicast_ether_addr(hdr->addr1) &&
451 !mvm->monitor_on && net_ratelimit())
452 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
453 }
454
455 return 0;
456 }
457
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)458 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
459 struct ieee80211_sta *sta,
460 struct sk_buff *skb,
461 struct iwl_rx_packet *pkt)
462 {
463 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
464
465 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
466 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
467 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
468
469 skb->ip_summed = CHECKSUM_COMPLETE;
470 skb->csum = csum_unfold(~(__force __sum16)hwsum);
471 }
472 } else {
473 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
474 struct iwl_mvm_vif *mvmvif;
475 u16 flags = le16_to_cpu(desc->l3l4_flags);
476 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
477 IWL_RX_L3_PROTO_POS);
478
479 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
480
481 if (mvmvif->features & NETIF_F_RXCSUM &&
482 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
483 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
484 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
485 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
486 skb->ip_summed = CHECKSUM_UNNECESSARY;
487 }
488 }
489
490 /*
491 * returns true if a packet is a duplicate or invalid tid and should be dropped.
492 * Updates AMSDU PN tracking info
493 */
iwl_mvm_is_dup(struct ieee80211_sta * sta,int queue,struct ieee80211_rx_status * rx_status,struct ieee80211_hdr * hdr,struct iwl_rx_mpdu_desc * desc)494 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
495 struct ieee80211_rx_status *rx_status,
496 struct ieee80211_hdr *hdr,
497 struct iwl_rx_mpdu_desc *desc)
498 {
499 struct iwl_mvm_sta *mvm_sta;
500 struct iwl_mvm_rxq_dup_data *dup_data;
501 u8 tid, sub_frame_idx;
502
503 if (WARN_ON(IS_ERR_OR_NULL(sta)))
504 return false;
505
506 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
507
508 if (WARN_ON_ONCE(!mvm_sta->dup_data))
509 return false;
510
511 dup_data = &mvm_sta->dup_data[queue];
512
513 /*
514 * Drop duplicate 802.11 retransmissions
515 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
516 */
517 if (ieee80211_is_ctl(hdr->frame_control) ||
518 ieee80211_is_any_nullfunc(hdr->frame_control) ||
519 is_multicast_ether_addr(hdr->addr1))
520 return false;
521
522 if (ieee80211_is_data_qos(hdr->frame_control)) {
523 /* frame has qos control */
524 tid = ieee80211_get_tid(hdr);
525 if (tid >= IWL_MAX_TID_COUNT)
526 return true;
527 } else {
528 tid = IWL_MAX_TID_COUNT;
529 }
530
531 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
532 sub_frame_idx = desc->amsdu_info &
533 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
534
535 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
536 dup_data->last_seq[tid] == hdr->seq_ctrl &&
537 dup_data->last_sub_frame[tid] >= sub_frame_idx))
538 return true;
539
540 /* Allow same PN as the first subframe for following sub frames */
541 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
542 sub_frame_idx > dup_data->last_sub_frame[tid] &&
543 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
544 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
545
546 dup_data->last_seq[tid] = hdr->seq_ctrl;
547 dup_data->last_sub_frame[tid] = sub_frame_idx;
548
549 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
550
551 return false;
552 }
553
iwl_mvm_release_frames(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct napi_struct * napi,struct iwl_mvm_baid_data * baid_data,struct iwl_mvm_reorder_buffer * reorder_buf,u16 nssn)554 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
555 struct ieee80211_sta *sta,
556 struct napi_struct *napi,
557 struct iwl_mvm_baid_data *baid_data,
558 struct iwl_mvm_reorder_buffer *reorder_buf,
559 u16 nssn)
560 {
561 struct iwl_mvm_reorder_buf_entry *entries =
562 &baid_data->entries[reorder_buf->queue *
563 baid_data->entries_per_queue];
564 u16 ssn = reorder_buf->head_sn;
565
566 lockdep_assert_held(&reorder_buf->lock);
567
568 while (ieee80211_sn_less(ssn, nssn)) {
569 int index = ssn % baid_data->buf_size;
570 struct sk_buff_head *skb_list = &entries[index].frames;
571 struct sk_buff *skb;
572
573 ssn = ieee80211_sn_inc(ssn);
574
575 /*
576 * Empty the list. Will have more than one frame for A-MSDU.
577 * Empty list is valid as well since nssn indicates frames were
578 * received.
579 */
580 while ((skb = __skb_dequeue(skb_list))) {
581 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
582 reorder_buf->queue,
583 sta);
584 reorder_buf->num_stored--;
585 }
586 }
587 reorder_buf->head_sn = nssn;
588 }
589
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)590 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
591 struct iwl_mvm_delba_data *data)
592 {
593 struct iwl_mvm_baid_data *ba_data;
594 struct ieee80211_sta *sta;
595 struct iwl_mvm_reorder_buffer *reorder_buf;
596 u8 baid = data->baid;
597 u32 sta_id;
598
599 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
600 return;
601
602 rcu_read_lock();
603
604 ba_data = rcu_dereference(mvm->baid_map[baid]);
605 if (WARN_ON_ONCE(!ba_data))
606 goto out;
607
608 /* pick any STA ID to find the pointer */
609 sta_id = ffs(ba_data->sta_mask) - 1;
610 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
611 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
612 goto out;
613
614 reorder_buf = &ba_data->reorder_buf[queue];
615
616 /* release all frames that are in the reorder buffer to the stack */
617 spin_lock_bh(&reorder_buf->lock);
618 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
619 ieee80211_sn_add(reorder_buf->head_sn,
620 ba_data->buf_size));
621 spin_unlock_bh(&reorder_buf->lock);
622
623 out:
624 rcu_read_unlock();
625 }
626
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue)627 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
628 struct napi_struct *napi,
629 u8 baid, u16 nssn, int queue)
630 {
631 struct ieee80211_sta *sta;
632 struct iwl_mvm_reorder_buffer *reorder_buf;
633 struct iwl_mvm_baid_data *ba_data;
634 u32 sta_id;
635
636 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
637 baid, nssn);
638
639 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
640 baid >= ARRAY_SIZE(mvm->baid_map)))
641 return;
642
643 rcu_read_lock();
644
645 ba_data = rcu_dereference(mvm->baid_map[baid]);
646 if (WARN(!ba_data, "BAID %d not found in map\n", baid))
647 goto out;
648
649 /* pick any STA ID to find the pointer */
650 sta_id = ffs(ba_data->sta_mask) - 1;
651 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
652 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
653 goto out;
654
655 reorder_buf = &ba_data->reorder_buf[queue];
656
657 spin_lock_bh(&reorder_buf->lock);
658 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
659 reorder_buf, nssn);
660 spin_unlock_bh(&reorder_buf->lock);
661
662 out:
663 rcu_read_unlock();
664 }
665
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)666 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
667 struct iwl_rx_cmd_buffer *rxb, int queue)
668 {
669 struct iwl_rx_packet *pkt = rxb_addr(rxb);
670 struct iwl_rxq_sync_notification *notif;
671 struct iwl_mvm_internal_rxq_notif *internal_notif;
672 u32 len = iwl_rx_packet_payload_len(pkt);
673
674 notif = (void *)pkt->data;
675 internal_notif = (void *)notif->payload;
676
677 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
678 "invalid notification size %d (%d)",
679 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
680 return;
681 len -= sizeof(*notif) + sizeof(*internal_notif);
682
683 if (WARN_ONCE(internal_notif->sync &&
684 mvm->queue_sync_cookie != internal_notif->cookie,
685 "Received expired RX queue sync message (cookie %d but wanted %d, queue %d)\n",
686 internal_notif->cookie, mvm->queue_sync_cookie, queue))
687 return;
688
689 switch (internal_notif->type) {
690 case IWL_MVM_RXQ_EMPTY:
691 WARN_ONCE(len, "invalid empty notification size %d", len);
692 break;
693 case IWL_MVM_RXQ_NOTIF_DEL_BA:
694 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
695 "invalid delba notification size %d (%d)",
696 len, (int)sizeof(struct iwl_mvm_delba_data)))
697 break;
698 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
699 break;
700 default:
701 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
702 }
703
704 if (internal_notif->sync) {
705 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
706 "queue sync: queue %d responded a second time!\n",
707 queue);
708 if (READ_ONCE(mvm->queue_sync_state) == 0)
709 wake_up(&mvm->rx_sync_waitq);
710 }
711 }
712
713 /*
714 * Returns true if the MPDU was buffered\dropped, false if it should be passed
715 * to upper layer.
716 */
iwl_mvm_reorder(struct iwl_mvm * mvm,struct napi_struct * napi,int queue,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_mpdu_desc * desc)717 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
718 struct napi_struct *napi,
719 int queue,
720 struct ieee80211_sta *sta,
721 struct sk_buff *skb,
722 struct iwl_rx_mpdu_desc *desc)
723 {
724 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
725 struct iwl_mvm_baid_data *baid_data;
726 struct iwl_mvm_reorder_buffer *buffer;
727 u32 reorder = le32_to_cpu(desc->reorder_data);
728 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
729 bool last_subframe =
730 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
731 u8 tid = ieee80211_get_tid(hdr);
732 struct iwl_mvm_reorder_buf_entry *entries;
733 u32 sta_mask;
734 int index;
735 u16 nssn, sn;
736 u8 baid;
737
738 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
739 IWL_RX_MPDU_REORDER_BAID_SHIFT;
740
741 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000)
742 return false;
743
744 /*
745 * This also covers the case of receiving a Block Ack Request
746 * outside a BA session; we'll pass it to mac80211 and that
747 * then sends a delBA action frame.
748 * This also covers pure monitor mode, in which case we won't
749 * have any BA sessions.
750 */
751 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
752 return false;
753
754 /* no sta yet */
755 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
756 "Got valid BAID without a valid station assigned\n"))
757 return false;
758
759 /* not a data packet or a bar */
760 if (!ieee80211_is_back_req(hdr->frame_control) &&
761 (!ieee80211_is_data_qos(hdr->frame_control) ||
762 is_multicast_ether_addr(hdr->addr1)))
763 return false;
764
765 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
766 return false;
767
768 baid_data = rcu_dereference(mvm->baid_map[baid]);
769 if (!baid_data) {
770 IWL_DEBUG_RX(mvm,
771 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
772 baid, reorder);
773 return false;
774 }
775
776 rcu_read_lock();
777 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
778 rcu_read_unlock();
779
780 if (IWL_FW_CHECK(mvm,
781 tid != baid_data->tid ||
782 !(sta_mask & baid_data->sta_mask),
783 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
784 baid, baid_data->sta_mask, baid_data->tid,
785 sta_mask, tid))
786 return false;
787
788 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
789 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
790 IWL_RX_MPDU_REORDER_SN_SHIFT;
791
792 buffer = &baid_data->reorder_buf[queue];
793 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
794
795 spin_lock_bh(&buffer->lock);
796
797 if (!buffer->valid) {
798 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
799 spin_unlock_bh(&buffer->lock);
800 return false;
801 }
802 buffer->valid = true;
803 }
804
805 /* drop any duplicated packets */
806 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
807 goto drop;
808
809 /* drop any oudated packets */
810 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
811 goto drop;
812
813 /* release immediately if allowed by nssn and no stored frames */
814 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
815 if (!amsdu || last_subframe)
816 buffer->head_sn = nssn;
817 /* No need to update AMSDU last SN - we are moving the head */
818 spin_unlock_bh(&buffer->lock);
819 return false;
820 }
821
822 /*
823 * release immediately if there are no stored frames, and the sn is
824 * equal to the head.
825 * This can happen due to reorder timer, where NSSN is behind head_sn.
826 * When we released everything, and we got the next frame in the
827 * sequence, according to the NSSN we can't release immediately,
828 * while technically there is no hole and we can move forward.
829 */
830 if (!buffer->num_stored && sn == buffer->head_sn) {
831 if (!amsdu || last_subframe)
832 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
833
834 /* No need to update AMSDU last SN - we are moving the head */
835 spin_unlock_bh(&buffer->lock);
836 return false;
837 }
838
839 /* put in reorder buffer */
840 index = sn % baid_data->buf_size;
841 __skb_queue_tail(&entries[index].frames, skb);
842 buffer->num_stored++;
843
844 if (amsdu)
845 buffer->last_amsdu = sn;
846
847 /*
848 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
849 * The reason is that NSSN advances on the first sub-frame, and may
850 * cause the reorder buffer to advance before all the sub-frames arrive.
851 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
852 * SN 1. NSSN for first sub frame will be 3 with the result of driver
853 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
854 * already ahead and it will be dropped.
855 * If the last sub-frame is not on this queue - we will get frame
856 * release notification with up to date NSSN.
857 * If this is the first frame that is stored in the buffer, the head_sn
858 * may be outdated. Update it based on the last NSSN to make sure it
859 * will be released when the frame release notification arrives.
860 */
861 if (!amsdu || last_subframe)
862 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
863 buffer, nssn);
864 else if (buffer->num_stored == 1)
865 buffer->head_sn = nssn;
866
867 spin_unlock_bh(&buffer->lock);
868 return true;
869
870 drop:
871 kfree_skb(skb);
872 spin_unlock_bh(&buffer->lock);
873 return true;
874 }
875
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)876 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
877 u32 reorder_data, u8 baid)
878 {
879 unsigned long now = jiffies;
880 unsigned long timeout;
881 struct iwl_mvm_baid_data *data;
882
883 rcu_read_lock();
884
885 data = rcu_dereference(mvm->baid_map[baid]);
886 if (!data) {
887 IWL_DEBUG_RX(mvm,
888 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
889 baid, reorder_data);
890 goto out;
891 }
892
893 if (!data->timeout)
894 goto out;
895
896 timeout = data->timeout;
897 /*
898 * Do not update last rx all the time to avoid cache bouncing
899 * between the rx queues.
900 * Update it every timeout. Worst case is the session will
901 * expire after ~ 2 * timeout, which doesn't matter that much.
902 */
903 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
904 /* Update is atomic */
905 data->last_rx = now;
906
907 out:
908 rcu_read_unlock();
909 }
910
iwl_mvm_flip_address(u8 * addr)911 static void iwl_mvm_flip_address(u8 *addr)
912 {
913 int i;
914 u8 mac_addr[ETH_ALEN];
915
916 for (i = 0; i < ETH_ALEN; i++)
917 mac_addr[i] = addr[ETH_ALEN - i - 1];
918 ether_addr_copy(addr, mac_addr);
919 }
920
921 struct iwl_mvm_rx_phy_data {
922 enum iwl_rx_phy_info_type info_type;
923 __le32 d0, d1, d2, d3, eht_d4, d5;
924 __le16 d4;
925 bool with_data;
926 bool first_subframe;
927 __le32 rx_vec[4];
928
929 u32 rate_n_flags;
930 u32 gp2_on_air_rise;
931 u16 phy_info;
932 u8 energy_a, energy_b;
933 u8 channel;
934 };
935
iwl_mvm_decode_he_mu_ext(struct iwl_mvm * mvm,struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_radiotap_he_mu * he_mu)936 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
937 struct iwl_mvm_rx_phy_data *phy_data,
938 struct ieee80211_radiotap_he_mu *he_mu)
939 {
940 u32 phy_data2 = le32_to_cpu(phy_data->d2);
941 u32 phy_data3 = le32_to_cpu(phy_data->d3);
942 u16 phy_data4 = le16_to_cpu(phy_data->d4);
943 u32 rate_n_flags = phy_data->rate_n_flags;
944
945 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
946 he_mu->flags1 |=
947 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
948 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
949
950 he_mu->flags1 |=
951 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
952 phy_data4),
953 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
954
955 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
956 phy_data2);
957 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
958 phy_data3);
959 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
960 phy_data2);
961 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
962 phy_data3);
963 }
964
965 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
966 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
967 he_mu->flags1 |=
968 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
969 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
970
971 he_mu->flags2 |=
972 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
973 phy_data4),
974 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
975
976 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
977 phy_data2);
978 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
979 phy_data3);
980 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
981 phy_data2);
982 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
983 phy_data3);
984 }
985 }
986
987 static void
iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_radiotap_he * he,struct ieee80211_radiotap_he_mu * he_mu,struct ieee80211_rx_status * rx_status)988 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
989 struct ieee80211_radiotap_he *he,
990 struct ieee80211_radiotap_he_mu *he_mu,
991 struct ieee80211_rx_status *rx_status)
992 {
993 /*
994 * Unfortunately, we have to leave the mac80211 data
995 * incorrect for the case that we receive an HE-MU
996 * transmission and *don't* have the HE phy data (due
997 * to the bits being used for TSF). This shouldn't
998 * happen though as management frames where we need
999 * the TSF/timers are not be transmitted in HE-MU.
1000 */
1001 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1002 u32 rate_n_flags = phy_data->rate_n_flags;
1003 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1004 u8 offs = 0;
1005
1006 rx_status->bw = RATE_INFO_BW_HE_RU;
1007
1008 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1009
1010 switch (ru) {
1011 case 0 ... 36:
1012 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1013 offs = ru;
1014 break;
1015 case 37 ... 52:
1016 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1017 offs = ru - 37;
1018 break;
1019 case 53 ... 60:
1020 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1021 offs = ru - 53;
1022 break;
1023 case 61 ... 64:
1024 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1025 offs = ru - 61;
1026 break;
1027 case 65 ... 66:
1028 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1029 offs = ru - 65;
1030 break;
1031 case 67:
1032 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1033 break;
1034 case 68:
1035 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1036 break;
1037 }
1038 he->data2 |= le16_encode_bits(offs,
1039 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1040 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1041 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1042 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1043 he->data2 |=
1044 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1045
1046 #define CHECK_BW(bw) \
1047 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1048 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1049 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1050 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1051 CHECK_BW(20);
1052 CHECK_BW(40);
1053 CHECK_BW(80);
1054 CHECK_BW(160);
1055
1056 if (he_mu)
1057 he_mu->flags2 |=
1058 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1059 rate_n_flags),
1060 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1061 else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1062 he->data6 |=
1063 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1064 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1065 rate_n_flags),
1066 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1067 }
1068
iwl_mvm_decode_he_phy_data(struct iwl_mvm * mvm,struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_radiotap_he * he,struct ieee80211_radiotap_he_mu * he_mu,struct ieee80211_rx_status * rx_status,int queue)1069 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1070 struct iwl_mvm_rx_phy_data *phy_data,
1071 struct ieee80211_radiotap_he *he,
1072 struct ieee80211_radiotap_he_mu *he_mu,
1073 struct ieee80211_rx_status *rx_status,
1074 int queue)
1075 {
1076 switch (phy_data->info_type) {
1077 case IWL_RX_PHY_INFO_TYPE_NONE:
1078 case IWL_RX_PHY_INFO_TYPE_CCK:
1079 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1080 case IWL_RX_PHY_INFO_TYPE_HT:
1081 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1082 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1083 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1084 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1085 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1086 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1087 return;
1088 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1089 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1090 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1091 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1092 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1093 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1094 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1095 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1096 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1097 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1098 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1099 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1100 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1101 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1102 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1103 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1104 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1105 fallthrough;
1106 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1107 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1108 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1109 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1110 /* HE common */
1111 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1112 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1113 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1114 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1115 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1116 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1117 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1118 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1119 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1120 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1121 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1122 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1123 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1124 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1125 IWL_RX_PHY_DATA0_HE_UPLINK),
1126 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1127 }
1128 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1129 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1130 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1131 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1132 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1133 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1134 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1135 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1136 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1137 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1138 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1139 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1140 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1141 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1142 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1143 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1144 IWL_RX_PHY_DATA0_HE_DOPPLER),
1145 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1146 break;
1147 }
1148
1149 switch (phy_data->info_type) {
1150 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1151 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1152 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1153 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1154 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1155 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1156 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1157 break;
1158 default:
1159 /* nothing here */
1160 break;
1161 }
1162
1163 switch (phy_data->info_type) {
1164 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1165 he_mu->flags1 |=
1166 le16_encode_bits(le16_get_bits(phy_data->d4,
1167 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1168 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1169 he_mu->flags1 |=
1170 le16_encode_bits(le16_get_bits(phy_data->d4,
1171 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1172 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1173 he_mu->flags2 |=
1174 le16_encode_bits(le16_get_bits(phy_data->d4,
1175 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1176 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1177 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1178 fallthrough;
1179 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1180 he_mu->flags2 |=
1181 le16_encode_bits(le32_get_bits(phy_data->d1,
1182 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1183 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1184 he_mu->flags2 |=
1185 le16_encode_bits(le32_get_bits(phy_data->d1,
1186 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1187 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1188 fallthrough;
1189 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1190 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1191 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1192 break;
1193 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1194 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1195 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1196 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1197 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1198 break;
1199 default:
1200 /* nothing */
1201 break;
1202 }
1203 }
1204
1205 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1206 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1207
1208 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1209 typeof(enc_bits) _enc_bits = enc_bits; \
1210 typeof(usig) _usig = usig; \
1211 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1212 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1213 } while (0)
1214
1215 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1216 eht->data[(rt_data)] |= \
1217 (cpu_to_le32 \
1218 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1219 LE32_DEC_ENC(data ## fw_data, \
1220 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1221 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1222
1223 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1224 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1225
1226 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1227 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1228 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1229 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1230 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1231 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1232 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1233 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1234
1235 #define IWL_RX_RU_DATA_A1 2
1236 #define IWL_RX_RU_DATA_A2 2
1237 #define IWL_RX_RU_DATA_B1 2
1238 #define IWL_RX_RU_DATA_B2 4
1239 #define IWL_RX_RU_DATA_C1 3
1240 #define IWL_RX_RU_DATA_C2 3
1241 #define IWL_RX_RU_DATA_D1 4
1242 #define IWL_RX_RU_DATA_D2 4
1243
1244 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1245 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1246 rt_ru, \
1247 IWL_RX_RU_DATA_ ## fw_ru, \
1248 fw_ru)
1249
iwl_mvm_decode_eht_ext_mu(struct iwl_mvm * mvm,struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht,struct ieee80211_radiotap_eht_usig * usig)1250 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1251 struct iwl_mvm_rx_phy_data *phy_data,
1252 struct ieee80211_rx_status *rx_status,
1253 struct ieee80211_radiotap_eht *eht,
1254 struct ieee80211_radiotap_eht_usig *usig)
1255 {
1256 if (phy_data->with_data) {
1257 __le32 data1 = phy_data->d1;
1258 __le32 data2 = phy_data->d2;
1259 __le32 data3 = phy_data->d3;
1260 __le32 data4 = phy_data->eht_d4;
1261 __le32 data5 = phy_data->d5;
1262 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1263
1264 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1265 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1266 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1267 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1268 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1269 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1270 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1271 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1272 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1273 IWL_MVM_ENC_USIG_VALUE_MASK
1274 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1275 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1276
1277 eht->user_info[0] |=
1278 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1279 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1280 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1281
1282 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1283 eht->data[7] |= LE32_DEC_ENC
1284 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1285 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1286
1287 /*
1288 * Hardware labels the content channels/RU allocation values
1289 * as follows:
1290 * Content Channel 1 Content Channel 2
1291 * 20 MHz: A1
1292 * 40 MHz: A1 B1
1293 * 80 MHz: A1 C1 B1 D1
1294 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1295 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1296 *
1297 * However firmware can only give us A1-D2, so the higher
1298 * frequencies are missing.
1299 */
1300
1301 switch (phy_bw) {
1302 case RATE_MCS_CHAN_WIDTH_320:
1303 /* additional values are missing in RX metadata */
1304 case RATE_MCS_CHAN_WIDTH_160:
1305 /* content channel 1 */
1306 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1307 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1308 /* content channel 2 */
1309 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1310 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1311 fallthrough;
1312 case RATE_MCS_CHAN_WIDTH_80:
1313 /* content channel 1 */
1314 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1315 /* content channel 2 */
1316 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1317 fallthrough;
1318 case RATE_MCS_CHAN_WIDTH_40:
1319 /* content channel 2 */
1320 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1321 fallthrough;
1322 case RATE_MCS_CHAN_WIDTH_20:
1323 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1324 break;
1325 }
1326 } else {
1327 __le32 usig_a1 = phy_data->rx_vec[0];
1328 __le32 usig_a2 = phy_data->rx_vec[1];
1329
1330 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1331 IWL_RX_USIG_A1_DISREGARD,
1332 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1333 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1334 IWL_RX_USIG_A1_VALIDATE,
1335 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1336 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1337 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1338 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1339 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1340 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1341 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1342 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1343 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1344 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1345 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1346 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1347 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1348 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1349 IWL_RX_USIG_A2_EHT_SIG_MCS,
1350 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1351 IWL_MVM_ENC_USIG_VALUE_MASK
1352 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1353 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1354 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1355 IWL_RX_USIG_A2_EHT_CRC_OK,
1356 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1357 }
1358 }
1359
iwl_mvm_decode_eht_ext_tb(struct iwl_mvm * mvm,struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht,struct ieee80211_radiotap_eht_usig * usig)1360 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1361 struct iwl_mvm_rx_phy_data *phy_data,
1362 struct ieee80211_rx_status *rx_status,
1363 struct ieee80211_radiotap_eht *eht,
1364 struct ieee80211_radiotap_eht_usig *usig)
1365 {
1366 if (phy_data->with_data) {
1367 __le32 data5 = phy_data->d5;
1368
1369 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1370 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1371 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1372 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1373 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1374 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1375
1376 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1377 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1378 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1379 } else {
1380 __le32 usig_a1 = phy_data->rx_vec[0];
1381 __le32 usig_a2 = phy_data->rx_vec[1];
1382
1383 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1384 IWL_RX_USIG_A1_DISREGARD,
1385 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1386 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1387 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1388 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1389 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1390 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1391 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1392 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1393 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1394 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1395 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1396 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1397 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1398 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1399 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1400 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1401 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1402 IWL_RX_USIG_A2_EHT_CRC_OK,
1403 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1404 }
1405 }
1406
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1407 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1408 struct ieee80211_rx_status *rx_status,
1409 struct ieee80211_radiotap_eht *eht)
1410 {
1411 u32 ru = le32_get_bits(eht->data[8],
1412 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1413 enum nl80211_eht_ru_alloc nl_ru;
1414
1415 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1416 * in an EHT variant User Info field
1417 */
1418
1419 switch (ru) {
1420 case 0 ... 36:
1421 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1422 break;
1423 case 37 ... 52:
1424 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1425 break;
1426 case 53 ... 60:
1427 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1428 break;
1429 case 61 ... 64:
1430 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1431 break;
1432 case 65 ... 66:
1433 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1434 break;
1435 case 67:
1436 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1437 break;
1438 case 68:
1439 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1440 break;
1441 case 69:
1442 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1443 break;
1444 case 70 ... 81:
1445 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1446 break;
1447 case 82 ... 89:
1448 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1449 break;
1450 case 90 ... 93:
1451 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1452 break;
1453 case 94 ... 95:
1454 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1455 break;
1456 case 96 ... 99:
1457 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1458 break;
1459 case 100 ... 103:
1460 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1461 break;
1462 case 104:
1463 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1464 break;
1465 case 105 ... 106:
1466 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1467 break;
1468 default:
1469 return;
1470 }
1471
1472 rx_status->bw = RATE_INFO_BW_EHT_RU;
1473 rx_status->eht.ru = nl_ru;
1474 }
1475
iwl_mvm_decode_eht_phy_data(struct iwl_mvm * mvm,struct iwl_mvm_rx_phy_data * phy_data,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht,struct ieee80211_radiotap_eht_usig * usig)1476 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1477 struct iwl_mvm_rx_phy_data *phy_data,
1478 struct ieee80211_rx_status *rx_status,
1479 struct ieee80211_radiotap_eht *eht,
1480 struct ieee80211_radiotap_eht_usig *usig)
1481
1482 {
1483 __le32 data0 = phy_data->d0;
1484 __le32 data1 = phy_data->d1;
1485 __le32 usig_a1 = phy_data->rx_vec[0];
1486 u8 info_type = phy_data->info_type;
1487
1488 /* Not in EHT range */
1489 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1490 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1491 return;
1492
1493 usig->common |= cpu_to_le32
1494 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1495 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1496 if (phy_data->with_data) {
1497 usig->common |= LE32_DEC_ENC(data0,
1498 IWL_RX_PHY_DATA0_EHT_UPLINK,
1499 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1500 usig->common |= LE32_DEC_ENC(data0,
1501 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1502 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1503 } else {
1504 usig->common |= LE32_DEC_ENC(usig_a1,
1505 IWL_RX_USIG_A1_UL_FLAG,
1506 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1507 usig->common |= LE32_DEC_ENC(usig_a1,
1508 IWL_RX_USIG_A1_BSS_COLOR,
1509 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1510 }
1511
1512 if (fw_has_capa(&mvm->fw->ucode_capa,
1513 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1514 usig->common |=
1515 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1516 usig->common |=
1517 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1518 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1519 }
1520
1521 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1522 eht->data[0] |= LE32_DEC_ENC(data0,
1523 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1524 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1525
1526 /* All RU allocating size/index is in TB format */
1527 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1528 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1529 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1530 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1531 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1532 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1533 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1534
1535 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1536
1537 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1538 * which is on only in case of monitor mode so no need to check monitor
1539 * mode
1540 */
1541 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1542 eht->data[1] |=
1543 le32_encode_bits(mvm->monitor_p80,
1544 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1545
1546 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1547 if (phy_data->with_data)
1548 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1549 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1550 else
1551 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1552 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1553
1554 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1555 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1556 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1557
1558 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1559 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1560 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1561
1562 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1563 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1564 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1565
1566 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1567
1568 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1569 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1570
1571 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1572 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1573 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1574
1575 /*
1576 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1577 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1578 */
1579
1580 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1581 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1582 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1583
1584 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1585 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1586 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1587
1588 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1589 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1590 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1591 }
1592
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1593 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1594 struct iwl_mvm_rx_phy_data *phy_data,
1595 int queue)
1596 {
1597 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1598
1599 struct ieee80211_radiotap_eht *eht;
1600 struct ieee80211_radiotap_eht_usig *usig;
1601 size_t eht_len = sizeof(*eht);
1602
1603 u32 rate_n_flags = phy_data->rate_n_flags;
1604 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1605 /* EHT and HE have the same valus for LTF */
1606 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1607 u16 phy_info = phy_data->phy_info;
1608 u32 bw;
1609
1610 /* u32 for 1 user_info */
1611 if (phy_data->with_data)
1612 eht_len += sizeof(u32);
1613
1614 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1615
1616 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1617 sizeof(*usig));
1618 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1619 usig->common |=
1620 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1621
1622 /* specific handling for 320MHz */
1623 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1624 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1625 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1626 le32_to_cpu(phy_data->d0));
1627
1628 usig->common |= cpu_to_le32
1629 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1630
1631 /* report the AMPDU-EOF bit on single frames */
1632 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1633 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1634 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1635 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1636 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1637 }
1638
1639 /* update aggregation data for monitor sake on default queue */
1640 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1641 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1642 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1643 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1644 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1645 }
1646
1647 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1648 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1649
1650 #define CHECK_TYPE(F) \
1651 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1652 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1653
1654 CHECK_TYPE(SU);
1655 CHECK_TYPE(EXT_SU);
1656 CHECK_TYPE(MU);
1657 CHECK_TYPE(TRIG);
1658
1659 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1660 case 0:
1661 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1662 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1663 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1664 } else {
1665 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1666 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1667 }
1668 break;
1669 case 1:
1670 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1671 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1672 break;
1673 case 2:
1674 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1675 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1676 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1677 else
1678 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1679 break;
1680 case 3:
1681 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1682 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1683 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1684 }
1685 break;
1686 default:
1687 /* nothing here */
1688 break;
1689 }
1690
1691 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1692 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1693 eht->data[0] |= cpu_to_le32
1694 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1695 ltf) |
1696 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1697 rx_status->eht.gi));
1698 }
1699
1700
1701 if (!phy_data->with_data) {
1702 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1703 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1704 eht->data[7] |=
1705 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1706 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1707 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1708 if (rate_n_flags & RATE_MCS_BF_MSK)
1709 eht->data[7] |=
1710 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1711 } else {
1712 eht->user_info[0] |=
1713 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1714 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1715 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1716 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1717 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1718
1719 if (rate_n_flags & RATE_MCS_BF_MSK)
1720 eht->user_info[0] |=
1721 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1722
1723 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1724 eht->user_info[0] |=
1725 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1726
1727 eht->user_info[0] |= cpu_to_le32
1728 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1729 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1730 rate_n_flags)) |
1731 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1732 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1733 }
1734 }
1735
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1736 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1737 struct iwl_mvm_rx_phy_data *phy_data,
1738 int queue)
1739 {
1740 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1741 struct ieee80211_radiotap_he *he = NULL;
1742 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1743 u32 rate_n_flags = phy_data->rate_n_flags;
1744 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1745 u8 ltf;
1746 static const struct ieee80211_radiotap_he known = {
1747 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1748 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1749 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1750 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1751 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1752 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1753 };
1754 static const struct ieee80211_radiotap_he_mu mu_known = {
1755 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1756 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1757 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1758 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1759 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1760 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1761 };
1762 u16 phy_info = phy_data->phy_info;
1763
1764 he = skb_put_data(skb, &known, sizeof(known));
1765 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1766
1767 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1768 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1769 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1770 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1771 }
1772
1773 /* report the AMPDU-EOF bit on single frames */
1774 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1775 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1776 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1777 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1778 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1779 }
1780
1781 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1782 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1783 queue);
1784
1785 /* update aggregation data for monitor sake on default queue */
1786 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1787 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1788 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1789 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1790 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1791 }
1792
1793 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1794 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1795 rx_status->bw = RATE_INFO_BW_HE_RU;
1796 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1797 }
1798
1799 /* actually data is filled in mac80211 */
1800 if (he_type == RATE_MCS_HE_TYPE_SU ||
1801 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1802 he->data1 |=
1803 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1804
1805 #define CHECK_TYPE(F) \
1806 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1807 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1808
1809 CHECK_TYPE(SU);
1810 CHECK_TYPE(EXT_SU);
1811 CHECK_TYPE(MU);
1812 CHECK_TYPE(TRIG);
1813
1814 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1815
1816 if (rate_n_flags & RATE_MCS_BF_MSK)
1817 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1818
1819 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1820 RATE_MCS_HE_GI_LTF_POS) {
1821 case 0:
1822 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1823 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1824 else
1825 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1826 if (he_type == RATE_MCS_HE_TYPE_MU)
1827 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1828 else
1829 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1830 break;
1831 case 1:
1832 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1833 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1834 else
1835 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1836 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1837 break;
1838 case 2:
1839 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1840 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1841 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1842 } else {
1843 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1844 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1845 }
1846 break;
1847 case 3:
1848 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1849 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1850 break;
1851 case 4:
1852 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1853 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1854 break;
1855 default:
1856 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1857 }
1858
1859 he->data5 |= le16_encode_bits(ltf,
1860 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1861 }
1862
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)1863 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1864 struct iwl_mvm_rx_phy_data *phy_data)
1865 {
1866 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1867 struct ieee80211_radiotap_lsig *lsig;
1868
1869 switch (phy_data->info_type) {
1870 case IWL_RX_PHY_INFO_TYPE_HT:
1871 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1872 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1873 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1874 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1875 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1876 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1877 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1878 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1879 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1880 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1881 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1882 lsig = skb_put(skb, sizeof(*lsig));
1883 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1884 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1885 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1886 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1887 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1888 break;
1889 default:
1890 break;
1891 }
1892 }
1893
1894 struct iwl_rx_sta_csa {
1895 bool all_sta_unblocked;
1896 struct ieee80211_vif *vif;
1897 };
1898
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)1899 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1900 {
1901 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1902 struct iwl_rx_sta_csa *rx_sta_csa = data;
1903
1904 if (mvmsta->vif != rx_sta_csa->vif)
1905 return;
1906
1907 if (mvmsta->disable_tx)
1908 rx_sta_csa->all_sta_unblocked = false;
1909 }
1910
1911 /*
1912 * Note: requires also rx_status->band to be prefilled, as well
1913 * as phy_data (apart from phy_data->info_type)
1914 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1915 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1916 struct sk_buff *skb,
1917 struct iwl_mvm_rx_phy_data *phy_data,
1918 int queue)
1919 {
1920 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1921 u32 rate_n_flags = phy_data->rate_n_flags;
1922 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1923 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1924 bool is_sgi;
1925
1926 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
1927
1928 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1929 phy_data->info_type =
1930 le32_get_bits(phy_data->d1,
1931 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1932
1933 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1934 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1935 case RATE_MCS_CHAN_WIDTH_20:
1936 break;
1937 case RATE_MCS_CHAN_WIDTH_40:
1938 rx_status->bw = RATE_INFO_BW_40;
1939 break;
1940 case RATE_MCS_CHAN_WIDTH_80:
1941 rx_status->bw = RATE_INFO_BW_80;
1942 break;
1943 case RATE_MCS_CHAN_WIDTH_160:
1944 rx_status->bw = RATE_INFO_BW_160;
1945 break;
1946 case RATE_MCS_CHAN_WIDTH_320:
1947 rx_status->bw = RATE_INFO_BW_320;
1948 break;
1949 }
1950
1951 /* must be before L-SIG data */
1952 if (format == RATE_MCS_HE_MSK)
1953 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
1954
1955 iwl_mvm_decode_lsig(skb, phy_data);
1956
1957 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
1958
1959 if (mvm->rx_ts_ptp && mvm->monitor_on) {
1960 u64 adj_time =
1961 iwl_mvm_ptp_get_adj_time(mvm, phy_data->gp2_on_air_rise * NSEC_PER_USEC);
1962
1963 rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
1964 rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
1965 rx_status->flag &= ~RX_FLAG_MACTIME;
1966 }
1967
1968 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
1969 rx_status->band);
1970 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
1971 phy_data->energy_a, phy_data->energy_b);
1972
1973 /* using TLV format and must be after all fixed len fields */
1974 if (format == RATE_MCS_EHT_MSK)
1975 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
1976
1977 if (unlikely(mvm->monitor_on))
1978 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1979
1980 is_sgi = format == RATE_MCS_HE_MSK ?
1981 iwl_he_is_sgi(rate_n_flags) :
1982 rate_n_flags & RATE_MCS_SGI_MSK;
1983
1984 if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
1985 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1986
1987 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1988 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1989
1990 switch (format) {
1991 case RATE_MCS_VHT_MSK:
1992 rx_status->encoding = RX_ENC_VHT;
1993 break;
1994 case RATE_MCS_HE_MSK:
1995 rx_status->encoding = RX_ENC_HE;
1996 rx_status->he_dcm =
1997 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1998 break;
1999 case RATE_MCS_EHT_MSK:
2000 rx_status->encoding = RX_ENC_EHT;
2001 break;
2002 }
2003
2004 switch (format) {
2005 case RATE_MCS_HT_MSK:
2006 rx_status->encoding = RX_ENC_HT;
2007 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2008 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2009 break;
2010 case RATE_MCS_VHT_MSK:
2011 case RATE_MCS_HE_MSK:
2012 case RATE_MCS_EHT_MSK:
2013 rx_status->nss =
2014 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2015 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2016 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2017 break;
2018 default: {
2019 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2020 rx_status->band);
2021
2022 rx_status->rate_idx = rate;
2023
2024 if ((rate < 0 || rate > 0xFF)) {
2025 rx_status->rate_idx = 0;
2026 if (net_ratelimit())
2027 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2028 rate_n_flags, rx_status->band);
2029 }
2030
2031 break;
2032 }
2033 }
2034 }
2035
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2036 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2037 struct iwl_rx_cmd_buffer *rxb, int queue)
2038 {
2039 struct ieee80211_rx_status *rx_status;
2040 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2041 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2042 struct ieee80211_hdr *hdr;
2043 u32 len;
2044 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2045 struct ieee80211_sta *sta = NULL;
2046 struct sk_buff *skb;
2047 u8 crypt_len = 0;
2048 u8 sta_id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2049 size_t desc_size;
2050 struct iwl_mvm_rx_phy_data phy_data = {};
2051 u32 format;
2052
2053 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2054 return;
2055
2056 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2057 desc_size = sizeof(*desc);
2058 else
2059 desc_size = IWL_RX_DESC_SIZE_V1;
2060
2061 if (unlikely(pkt_len < desc_size)) {
2062 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2063 return;
2064 }
2065
2066 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2067 phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
2068 phy_data.channel = desc->v3.channel;
2069 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2070 phy_data.energy_a = desc->v3.energy_a;
2071 phy_data.energy_b = desc->v3.energy_b;
2072
2073 phy_data.d0 = desc->v3.phy_data0;
2074 phy_data.d1 = desc->v3.phy_data1;
2075 phy_data.d2 = desc->v3.phy_data2;
2076 phy_data.d3 = desc->v3.phy_data3;
2077 phy_data.eht_d4 = desc->phy_eht_data4;
2078 phy_data.d5 = desc->v3.phy_data5;
2079 } else {
2080 phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
2081 phy_data.channel = desc->v1.channel;
2082 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2083 phy_data.energy_a = desc->v1.energy_a;
2084 phy_data.energy_b = desc->v1.energy_b;
2085
2086 phy_data.d0 = desc->v1.phy_data0;
2087 phy_data.d1 = desc->v1.phy_data1;
2088 phy_data.d2 = desc->v1.phy_data2;
2089 phy_data.d3 = desc->v1.phy_data3;
2090 }
2091
2092 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2093 REPLY_RX_MPDU_CMD, 0) < 4) {
2094 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2095 IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
2096 phy_data.rate_n_flags);
2097 }
2098
2099 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2100
2101 len = le16_to_cpu(desc->mpdu_len);
2102
2103 if (unlikely(len + desc_size > pkt_len)) {
2104 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2105 return;
2106 }
2107
2108 phy_data.with_data = true;
2109 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2110 phy_data.d4 = desc->phy_data4;
2111
2112 hdr = (void *)(pkt->data + desc_size);
2113 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2114 * ieee80211_hdr pulled.
2115 */
2116 skb = alloc_skb(128, GFP_ATOMIC);
2117 if (!skb) {
2118 IWL_ERR(mvm, "alloc_skb failed\n");
2119 return;
2120 }
2121
2122 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2123 /*
2124 * If the device inserted padding it means that (it thought)
2125 * the 802.11 header wasn't a multiple of 4 bytes long. In
2126 * this case, reserve two bytes at the start of the SKB to
2127 * align the payload properly in case we end up copying it.
2128 */
2129 skb_reserve(skb, 2);
2130 }
2131
2132 rx_status = IEEE80211_SKB_RXCB(skb);
2133
2134 /*
2135 * Keep packets with CRC errors (and with overrun) for monitor mode
2136 * (otherwise the firmware discards them) but mark them as bad.
2137 */
2138 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2139 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2140 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2141 le32_to_cpu(desc->status));
2142 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2143 }
2144
2145 /* set the preamble flag if appropriate */
2146 if (format == RATE_MCS_CCK_MSK &&
2147 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2148 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2149
2150 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2151 u64 tsf_on_air_rise;
2152
2153 if (mvm->trans->trans_cfg->device_family >=
2154 IWL_DEVICE_FAMILY_AX210)
2155 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2156 else
2157 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2158
2159 rx_status->mactime = tsf_on_air_rise;
2160 /* TSF as indicated by the firmware is at INA time */
2161 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2162 }
2163
2164 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2165 u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
2166
2167 rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2168 } else {
2169 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2170 NL80211_BAND_2GHZ;
2171 }
2172
2173 /* update aggregation data for monitor sake on default queue */
2174 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2175 bool toggle_bit;
2176
2177 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2178 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2179 /*
2180 * Toggle is switched whenever new aggregation starts. Make
2181 * sure ampdu_reference is never 0 so we can later use it to
2182 * see if the frame was really part of an A-MPDU or not.
2183 */
2184 if (toggle_bit != mvm->ampdu_toggle) {
2185 mvm->ampdu_ref++;
2186 if (mvm->ampdu_ref == 0)
2187 mvm->ampdu_ref++;
2188 mvm->ampdu_toggle = toggle_bit;
2189 phy_data.first_subframe = true;
2190 }
2191 rx_status->ampdu_reference = mvm->ampdu_ref;
2192 }
2193
2194 rcu_read_lock();
2195
2196 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2197 if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2198 struct ieee80211_link_sta *link_sta;
2199
2200 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2201 if (IS_ERR(sta))
2202 sta = NULL;
2203 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
2204
2205 if (sta && sta->valid_links && link_sta) {
2206 rx_status->link_valid = 1;
2207 rx_status->link_id = link_sta->link_id;
2208 }
2209 }
2210 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2211 /*
2212 * This is fine since we prevent two stations with the same
2213 * address from being added.
2214 */
2215 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2216 }
2217
2218 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2219 le32_to_cpu(pkt->len_n_flags), queue,
2220 &crypt_len)) {
2221 kfree_skb(skb);
2222 goto out;
2223 }
2224
2225 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2226
2227 if (sta) {
2228 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2229 struct ieee80211_vif *tx_blocked_vif =
2230 rcu_dereference(mvm->csa_tx_blocked_vif);
2231 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2232 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2233 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2234 struct iwl_fw_dbg_trigger_tlv *trig;
2235 struct ieee80211_vif *vif = mvmsta->vif;
2236
2237 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2238 !is_multicast_ether_addr(hdr->addr1) &&
2239 ieee80211_is_data(hdr->frame_control) &&
2240 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2241 schedule_delayed_work(&mvm->tcm.work, 0);
2242
2243 /*
2244 * We have tx blocked stations (with CS bit). If we heard
2245 * frames from a blocked station on a new channel we can
2246 * TX to it again.
2247 */
2248 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2249 struct iwl_mvm_vif *mvmvif =
2250 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2251 struct iwl_rx_sta_csa rx_sta_csa = {
2252 .all_sta_unblocked = true,
2253 .vif = tx_blocked_vif,
2254 };
2255
2256 if (mvmvif->csa_target_freq == rx_status->freq)
2257 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2258 false);
2259 ieee80211_iterate_stations_atomic(mvm->hw,
2260 iwl_mvm_rx_get_sta_block_tx,
2261 &rx_sta_csa);
2262
2263 if (rx_sta_csa.all_sta_unblocked) {
2264 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2265 /* Unblock BCAST / MCAST station */
2266 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2267 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2268 }
2269 }
2270
2271 rs_update_last_rssi(mvm, mvmsta, rx_status);
2272
2273 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2274 ieee80211_vif_to_wdev(vif),
2275 FW_DBG_TRIGGER_RSSI);
2276
2277 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2278 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2279 s32 rssi;
2280
2281 rssi_trig = (void *)trig->data;
2282 rssi = le32_to_cpu(rssi_trig->rssi);
2283
2284 if (rx_status->signal < rssi)
2285 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2286 NULL);
2287 }
2288
2289 if (ieee80211_is_data(hdr->frame_control))
2290 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2291
2292 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2293 IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2294 le16_to_cpu(hdr->seq_ctrl));
2295 kfree_skb(skb);
2296 goto out;
2297 }
2298
2299 /*
2300 * Our hardware de-aggregates AMSDUs but copies the mac header
2301 * as it to the de-aggregated MPDUs. We need to turn off the
2302 * AMSDU bit in the QoS control ourselves.
2303 * In addition, HW reverses addr3 and addr4 - reverse it back.
2304 */
2305 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2306 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2307 u8 *qc = ieee80211_get_qos_ctl(hdr);
2308
2309 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2310
2311 if (mvm->trans->trans_cfg->device_family ==
2312 IWL_DEVICE_FAMILY_9000) {
2313 iwl_mvm_flip_address(hdr->addr3);
2314
2315 if (ieee80211_has_a4(hdr->frame_control))
2316 iwl_mvm_flip_address(hdr->addr4);
2317 }
2318 }
2319 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2320 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2321
2322 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2323 }
2324
2325 if (ieee80211_is_data(hdr->frame_control)) {
2326 u8 sub_frame_idx = desc->amsdu_info &
2327 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
2328
2329 /* 0 means not an A-MSDU, and 1 means a new A-MSDU */
2330 if (!sub_frame_idx || sub_frame_idx == 1)
2331 iwl_mvm_count_mpdu(mvmsta, sta_id, 1, false,
2332 queue);
2333 }
2334 }
2335
2336 /* management stuff on default queue */
2337 if (!queue) {
2338 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2339 ieee80211_is_probe_resp(hdr->frame_control)) &&
2340 mvm->sched_scan_pass_all ==
2341 SCHED_SCAN_PASS_ALL_ENABLED))
2342 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2343
2344 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2345 ieee80211_is_probe_resp(hdr->frame_control)))
2346 rx_status->boottime_ns = ktime_get_boottime_ns();
2347 }
2348
2349 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2350 kfree_skb(skb);
2351 goto out;
2352 }
2353
2354 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2355 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2356 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2357 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2358 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2359 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2360 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2361
2362 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2363 }
2364 out:
2365 rcu_read_unlock();
2366 }
2367
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2368 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2369 struct iwl_rx_cmd_buffer *rxb, int queue)
2370 {
2371 struct ieee80211_rx_status *rx_status;
2372 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2373 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2374 u32 rssi;
2375 struct ieee80211_sta *sta = NULL;
2376 struct sk_buff *skb;
2377 struct iwl_mvm_rx_phy_data phy_data;
2378 u32 format;
2379
2380 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2381 return;
2382
2383 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2384 return;
2385
2386 rssi = le32_to_cpu(desc->rssi);
2387 phy_data.d0 = desc->phy_info[0];
2388 phy_data.d1 = desc->phy_info[1];
2389 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2390 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2391 phy_data.rate_n_flags = le32_to_cpu(desc->rate);
2392 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2393 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2394 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2395 phy_data.with_data = false;
2396 phy_data.rx_vec[0] = desc->rx_vec[0];
2397 phy_data.rx_vec[1] = desc->rx_vec[1];
2398
2399 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2400 RX_NO_DATA_NOTIF, 0) < 2) {
2401 IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
2402 phy_data.rate_n_flags);
2403 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2404 IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
2405 phy_data.rate_n_flags);
2406 }
2407
2408 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2409
2410 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2411 RX_NO_DATA_NOTIF, 0) >= 3) {
2412 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2413 sizeof(struct iwl_rx_no_data_ver_3)))
2414 /* invalid len for ver 3 */
2415 return;
2416 phy_data.rx_vec[2] = desc->rx_vec[2];
2417 phy_data.rx_vec[3] = desc->rx_vec[3];
2418 } else {
2419 if (format == RATE_MCS_EHT_MSK)
2420 /* no support for EHT before version 3 API */
2421 return;
2422 }
2423
2424 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2425 * ieee80211_hdr pulled.
2426 */
2427 skb = alloc_skb(128, GFP_ATOMIC);
2428 if (!skb) {
2429 IWL_ERR(mvm, "alloc_skb failed\n");
2430 return;
2431 }
2432
2433 rx_status = IEEE80211_SKB_RXCB(skb);
2434
2435 /* 0-length PSDU */
2436 rx_status->flag |= RX_FLAG_NO_PSDU;
2437
2438 /* mark as failed PLCP on any errors to skip checks in mac80211 */
2439 if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) !=
2440 RX_NO_DATA_INFO_ERR_NONE)
2441 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
2442
2443 switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) {
2444 case RX_NO_DATA_INFO_TYPE_NDP:
2445 rx_status->zero_length_psdu_type =
2446 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2447 break;
2448 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2449 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2450 rx_status->zero_length_psdu_type =
2451 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2452 break;
2453 default:
2454 rx_status->zero_length_psdu_type =
2455 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2456 break;
2457 }
2458
2459 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2460 NL80211_BAND_2GHZ;
2461
2462 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2463
2464 /* no more radio tap info should be put after this point.
2465 *
2466 * We mark it as mac header, for upper layers to know where
2467 * all radio tap header ends.
2468 *
2469 * Since data doesn't move data while putting data on skb and that is
2470 * the only way we use, data + len is the next place that hdr would be put
2471 */
2472 skb_set_mac_header(skb, skb->len);
2473
2474 /*
2475 * Override the nss from the rx_vec since the rate_n_flags has
2476 * only 2 bits for the nss which gives a max of 4 ss but there
2477 * may be up to 8 spatial streams.
2478 */
2479 switch (format) {
2480 case RATE_MCS_VHT_MSK:
2481 rx_status->nss =
2482 le32_get_bits(desc->rx_vec[0],
2483 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2484 break;
2485 case RATE_MCS_HE_MSK:
2486 rx_status->nss =
2487 le32_get_bits(desc->rx_vec[0],
2488 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2489 break;
2490 case RATE_MCS_EHT_MSK:
2491 rx_status->nss =
2492 le32_get_bits(desc->rx_vec[2],
2493 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2494 }
2495
2496 rcu_read_lock();
2497 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2498 rcu_read_unlock();
2499 }
2500
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2501 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2502 struct iwl_rx_cmd_buffer *rxb, int queue)
2503 {
2504 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2505 struct iwl_frame_release *release = (void *)pkt->data;
2506
2507 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2508 return;
2509
2510 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2511 le16_to_cpu(release->nssn),
2512 queue);
2513 }
2514
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2515 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2516 struct iwl_rx_cmd_buffer *rxb, int queue)
2517 {
2518 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2519 struct iwl_bar_frame_release *release = (void *)pkt->data;
2520 unsigned int baid = le32_get_bits(release->ba_info,
2521 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2522 unsigned int nssn = le32_get_bits(release->ba_info,
2523 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2524 unsigned int sta_id = le32_get_bits(release->sta_tid,
2525 IWL_BAR_FRAME_RELEASE_STA_MASK);
2526 unsigned int tid = le32_get_bits(release->sta_tid,
2527 IWL_BAR_FRAME_RELEASE_TID_MASK);
2528 struct iwl_mvm_baid_data *baid_data;
2529
2530 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2531 return;
2532
2533 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2534 baid >= ARRAY_SIZE(mvm->baid_map)))
2535 return;
2536
2537 rcu_read_lock();
2538 baid_data = rcu_dereference(mvm->baid_map[baid]);
2539 if (!baid_data) {
2540 IWL_DEBUG_RX(mvm,
2541 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2542 baid);
2543 goto out;
2544 }
2545
2546 if (WARN(tid != baid_data->tid || sta_id > IWL_STATION_COUNT_MAX ||
2547 !(baid_data->sta_mask & BIT(sta_id)),
2548 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2549 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2550 tid))
2551 goto out;
2552
2553 IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2554 nssn);
2555
2556 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2557 out:
2558 rcu_read_unlock();
2559 }
2560