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 % reorder_buf->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 reorder_buf->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 u8 sub_frame_idx = desc->amsdu_info &
733 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
734 struct iwl_mvm_reorder_buf_entry *entries;
735 u32 sta_mask;
736 int index;
737 u16 nssn, sn;
738 u8 baid;
739
740 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
741 IWL_RX_MPDU_REORDER_BAID_SHIFT;
742
743 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000)
744 return false;
745
746 /*
747 * This also covers the case of receiving a Block Ack Request
748 * outside a BA session; we'll pass it to mac80211 and that
749 * then sends a delBA action frame.
750 * This also covers pure monitor mode, in which case we won't
751 * have any BA sessions.
752 */
753 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
754 return false;
755
756 /* no sta yet */
757 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
758 "Got valid BAID without a valid station assigned\n"))
759 return false;
760
761 /* not a data packet or a bar */
762 if (!ieee80211_is_back_req(hdr->frame_control) &&
763 (!ieee80211_is_data_qos(hdr->frame_control) ||
764 is_multicast_ether_addr(hdr->addr1)))
765 return false;
766
767 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
768 return false;
769
770 baid_data = rcu_dereference(mvm->baid_map[baid]);
771 if (!baid_data) {
772 IWL_DEBUG_RX(mvm,
773 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
774 baid, reorder);
775 return false;
776 }
777
778 rcu_read_lock();
779 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
780 rcu_read_unlock();
781
782 if (IWL_FW_CHECK(mvm,
783 tid != baid_data->tid ||
784 !(sta_mask & baid_data->sta_mask),
785 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
786 baid, baid_data->sta_mask, baid_data->tid,
787 sta_mask, tid))
788 return false;
789
790 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
791 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
792 IWL_RX_MPDU_REORDER_SN_SHIFT;
793
794 buffer = &baid_data->reorder_buf[queue];
795 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
796
797 spin_lock_bh(&buffer->lock);
798
799 if (!buffer->valid) {
800 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
801 spin_unlock_bh(&buffer->lock);
802 return false;
803 }
804 buffer->valid = true;
805 }
806
807 /* drop any duplicated packets */
808 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
809 goto drop;
810
811 /* drop any oudated packets */
812 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
813 goto drop;
814
815 /* release immediately if allowed by nssn and no stored frames */
816 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
817 if (!amsdu || last_subframe)
818 buffer->head_sn = nssn;
819 /* No need to update AMSDU last SN - we are moving the head */
820 spin_unlock_bh(&buffer->lock);
821 return false;
822 }
823
824 /*
825 * release immediately if there are no stored frames, and the sn is
826 * equal to the head.
827 * This can happen due to reorder timer, where NSSN is behind head_sn.
828 * When we released everything, and we got the next frame in the
829 * sequence, according to the NSSN we can't release immediately,
830 * while technically there is no hole and we can move forward.
831 */
832 if (!buffer->num_stored && sn == buffer->head_sn) {
833 if (!amsdu || last_subframe)
834 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
835
836 /* No need to update AMSDU last SN - we are moving the head */
837 spin_unlock_bh(&buffer->lock);
838 return false;
839 }
840
841 /* put in reorder buffer */
842 index = sn % buffer->buf_size;
843 __skb_queue_tail(&entries[index].frames, skb);
844 buffer->num_stored++;
845
846 if (amsdu) {
847 buffer->last_amsdu = sn;
848 buffer->last_sub_index = sub_frame_idx;
849 }
850
851 /*
852 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
853 * The reason is that NSSN advances on the first sub-frame, and may
854 * cause the reorder buffer to advance before all the sub-frames arrive.
855 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
856 * SN 1. NSSN for first sub frame will be 3 with the result of driver
857 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
858 * already ahead and it will be dropped.
859 * If the last sub-frame is not on this queue - we will get frame
860 * release notification with up to date NSSN.
861 */
862 if (!amsdu || last_subframe)
863 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
864 buffer, nssn);
865
866 spin_unlock_bh(&buffer->lock);
867 return true;
868
869 drop:
870 kfree_skb(skb);
871 spin_unlock_bh(&buffer->lock);
872 return true;
873 }
874
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)875 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
876 u32 reorder_data, u8 baid)
877 {
878 unsigned long now = jiffies;
879 unsigned long timeout;
880 struct iwl_mvm_baid_data *data;
881
882 rcu_read_lock();
883
884 data = rcu_dereference(mvm->baid_map[baid]);
885 if (!data) {
886 IWL_DEBUG_RX(mvm,
887 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
888 baid, reorder_data);
889 goto out;
890 }
891
892 if (!data->timeout)
893 goto out;
894
895 timeout = data->timeout;
896 /*
897 * Do not update last rx all the time to avoid cache bouncing
898 * between the rx queues.
899 * Update it every timeout. Worst case is the session will
900 * expire after ~ 2 * timeout, which doesn't matter that much.
901 */
902 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
903 /* Update is atomic */
904 data->last_rx = now;
905
906 out:
907 rcu_read_unlock();
908 }
909
iwl_mvm_flip_address(u8 * addr)910 static void iwl_mvm_flip_address(u8 *addr)
911 {
912 int i;
913 u8 mac_addr[ETH_ALEN];
914
915 for (i = 0; i < ETH_ALEN; i++)
916 mac_addr[i] = addr[ETH_ALEN - i - 1];
917 ether_addr_copy(addr, mac_addr);
918 }
919
920 struct iwl_mvm_rx_phy_data {
921 enum iwl_rx_phy_info_type info_type;
922 __le32 d0, d1, d2, d3, eht_d4, d5;
923 __le16 d4;
924 bool with_data;
925 bool first_subframe;
926 __le32 rx_vec[4];
927
928 u32 rate_n_flags;
929 u32 gp2_on_air_rise;
930 u16 phy_info;
931 u8 energy_a, energy_b;
932 u8 channel;
933 };
934
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)935 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
936 struct iwl_mvm_rx_phy_data *phy_data,
937 struct ieee80211_radiotap_he_mu *he_mu)
938 {
939 u32 phy_data2 = le32_to_cpu(phy_data->d2);
940 u32 phy_data3 = le32_to_cpu(phy_data->d3);
941 u16 phy_data4 = le16_to_cpu(phy_data->d4);
942 u32 rate_n_flags = phy_data->rate_n_flags;
943
944 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
945 he_mu->flags1 |=
946 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
947 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
948
949 he_mu->flags1 |=
950 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
951 phy_data4),
952 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
953
954 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
955 phy_data2);
956 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
957 phy_data3);
958 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
959 phy_data2);
960 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
961 phy_data3);
962 }
963
964 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
965 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
966 he_mu->flags1 |=
967 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
968 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
969
970 he_mu->flags2 |=
971 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
972 phy_data4),
973 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
974
975 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
976 phy_data2);
977 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
978 phy_data3);
979 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
980 phy_data2);
981 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
982 phy_data3);
983 }
984 }
985
986 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)987 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
988 struct ieee80211_radiotap_he *he,
989 struct ieee80211_radiotap_he_mu *he_mu,
990 struct ieee80211_rx_status *rx_status)
991 {
992 /*
993 * Unfortunately, we have to leave the mac80211 data
994 * incorrect for the case that we receive an HE-MU
995 * transmission and *don't* have the HE phy data (due
996 * to the bits being used for TSF). This shouldn't
997 * happen though as management frames where we need
998 * the TSF/timers are not be transmitted in HE-MU.
999 */
1000 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1001 u32 rate_n_flags = phy_data->rate_n_flags;
1002 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
1003 u8 offs = 0;
1004
1005 rx_status->bw = RATE_INFO_BW_HE_RU;
1006
1007 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1008
1009 switch (ru) {
1010 case 0 ... 36:
1011 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1012 offs = ru;
1013 break;
1014 case 37 ... 52:
1015 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1016 offs = ru - 37;
1017 break;
1018 case 53 ... 60:
1019 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1020 offs = ru - 53;
1021 break;
1022 case 61 ... 64:
1023 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1024 offs = ru - 61;
1025 break;
1026 case 65 ... 66:
1027 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1028 offs = ru - 65;
1029 break;
1030 case 67:
1031 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1032 break;
1033 case 68:
1034 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1035 break;
1036 }
1037 he->data2 |= le16_encode_bits(offs,
1038 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1039 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1040 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1041 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1042 he->data2 |=
1043 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1044
1045 #define CHECK_BW(bw) \
1046 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1047 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1048 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1049 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1050 CHECK_BW(20);
1051 CHECK_BW(40);
1052 CHECK_BW(80);
1053 CHECK_BW(160);
1054
1055 if (he_mu)
1056 he_mu->flags2 |=
1057 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1058 rate_n_flags),
1059 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1060 else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
1061 he->data6 |=
1062 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1063 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1064 rate_n_flags),
1065 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1066 }
1067
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)1068 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1069 struct iwl_mvm_rx_phy_data *phy_data,
1070 struct ieee80211_radiotap_he *he,
1071 struct ieee80211_radiotap_he_mu *he_mu,
1072 struct ieee80211_rx_status *rx_status,
1073 int queue)
1074 {
1075 switch (phy_data->info_type) {
1076 case IWL_RX_PHY_INFO_TYPE_NONE:
1077 case IWL_RX_PHY_INFO_TYPE_CCK:
1078 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1079 case IWL_RX_PHY_INFO_TYPE_HT:
1080 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1081 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1082 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1083 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1084 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1085 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1086 return;
1087 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1088 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1089 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1090 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1091 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1092 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1093 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1094 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1095 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1096 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1097 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1098 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1099 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1100 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1101 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1102 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1103 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1104 fallthrough;
1105 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1106 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1107 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1108 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1109 /* HE common */
1110 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1111 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1112 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1113 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1114 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1115 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1116 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1117 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1118 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1119 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1120 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1121 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1122 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1123 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1124 IWL_RX_PHY_DATA0_HE_UPLINK),
1125 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1126 }
1127 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1128 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1129 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1130 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1131 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1132 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1133 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1134 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1135 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1136 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1137 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1138 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1139 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1140 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1141 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1142 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1143 IWL_RX_PHY_DATA0_HE_DOPPLER),
1144 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1145 break;
1146 }
1147
1148 switch (phy_data->info_type) {
1149 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1150 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1151 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1152 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1153 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1154 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1155 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1156 break;
1157 default:
1158 /* nothing here */
1159 break;
1160 }
1161
1162 switch (phy_data->info_type) {
1163 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1164 he_mu->flags1 |=
1165 le16_encode_bits(le16_get_bits(phy_data->d4,
1166 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1167 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1168 he_mu->flags1 |=
1169 le16_encode_bits(le16_get_bits(phy_data->d4,
1170 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1171 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1172 he_mu->flags2 |=
1173 le16_encode_bits(le16_get_bits(phy_data->d4,
1174 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1175 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1176 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1177 fallthrough;
1178 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1179 he_mu->flags2 |=
1180 le16_encode_bits(le32_get_bits(phy_data->d1,
1181 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1182 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1183 he_mu->flags2 |=
1184 le16_encode_bits(le32_get_bits(phy_data->d1,
1185 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1186 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1187 fallthrough;
1188 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1189 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1190 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1191 break;
1192 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1193 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1194 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1195 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1196 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1197 break;
1198 default:
1199 /* nothing */
1200 break;
1201 }
1202 }
1203
1204 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1205 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1206
1207 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1208 typeof(enc_bits) _enc_bits = enc_bits; \
1209 typeof(usig) _usig = usig; \
1210 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1211 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1212 } while (0)
1213
1214 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1215 eht->data[(rt_data)] |= \
1216 (cpu_to_le32 \
1217 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1218 LE32_DEC_ENC(data ## fw_data, \
1219 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1220 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1221
1222 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1223 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1224
1225 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1226 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1227 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1228 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1229 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1230 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1231 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1232 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1233
1234 #define IWL_RX_RU_DATA_A1 2
1235 #define IWL_RX_RU_DATA_A2 2
1236 #define IWL_RX_RU_DATA_B1 2
1237 #define IWL_RX_RU_DATA_B2 4
1238 #define IWL_RX_RU_DATA_C1 3
1239 #define IWL_RX_RU_DATA_C2 3
1240 #define IWL_RX_RU_DATA_D1 4
1241 #define IWL_RX_RU_DATA_D2 4
1242
1243 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1244 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1245 rt_ru, \
1246 IWL_RX_RU_DATA_ ## fw_ru, \
1247 fw_ru)
1248
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)1249 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1250 struct iwl_mvm_rx_phy_data *phy_data,
1251 struct ieee80211_rx_status *rx_status,
1252 struct ieee80211_radiotap_eht *eht,
1253 struct ieee80211_radiotap_eht_usig *usig)
1254 {
1255 if (phy_data->with_data) {
1256 __le32 data1 = phy_data->d1;
1257 __le32 data2 = phy_data->d2;
1258 __le32 data3 = phy_data->d3;
1259 __le32 data4 = phy_data->eht_d4;
1260 __le32 data5 = phy_data->d5;
1261 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1262
1263 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1264 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1265 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1266 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1267 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1268 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1269 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1270 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1271 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1272 IWL_MVM_ENC_USIG_VALUE_MASK
1273 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1274 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1275
1276 eht->user_info[0] |=
1277 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1278 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1279 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1280
1281 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1282 eht->data[7] |= LE32_DEC_ENC
1283 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1284 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1285
1286 /*
1287 * Hardware labels the content channels/RU allocation values
1288 * as follows:
1289 * Content Channel 1 Content Channel 2
1290 * 20 MHz: A1
1291 * 40 MHz: A1 B1
1292 * 80 MHz: A1 C1 B1 D1
1293 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1294 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1295 *
1296 * However firmware can only give us A1-D2, so the higher
1297 * frequencies are missing.
1298 */
1299
1300 switch (phy_bw) {
1301 case RATE_MCS_CHAN_WIDTH_320:
1302 /* additional values are missing in RX metadata */
1303 case RATE_MCS_CHAN_WIDTH_160:
1304 /* content channel 1 */
1305 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1306 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1307 /* content channel 2 */
1308 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1309 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1310 fallthrough;
1311 case RATE_MCS_CHAN_WIDTH_80:
1312 /* content channel 1 */
1313 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1314 /* content channel 2 */
1315 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1316 fallthrough;
1317 case RATE_MCS_CHAN_WIDTH_40:
1318 /* content channel 2 */
1319 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1320 fallthrough;
1321 case RATE_MCS_CHAN_WIDTH_20:
1322 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1323 break;
1324 }
1325 } else {
1326 __le32 usig_a1 = phy_data->rx_vec[0];
1327 __le32 usig_a2 = phy_data->rx_vec[1];
1328
1329 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1330 IWL_RX_USIG_A1_DISREGARD,
1331 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1332 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1333 IWL_RX_USIG_A1_VALIDATE,
1334 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1335 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1336 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1337 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1338 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1339 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1340 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1341 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1342 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1343 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1344 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1345 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1346 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1347 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1348 IWL_RX_USIG_A2_EHT_SIG_MCS,
1349 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1350 IWL_MVM_ENC_USIG_VALUE_MASK
1351 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1352 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1353 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1354 IWL_RX_USIG_A2_EHT_CRC_OK,
1355 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1356 }
1357 }
1358
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)1359 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1360 struct iwl_mvm_rx_phy_data *phy_data,
1361 struct ieee80211_rx_status *rx_status,
1362 struct ieee80211_radiotap_eht *eht,
1363 struct ieee80211_radiotap_eht_usig *usig)
1364 {
1365 if (phy_data->with_data) {
1366 __le32 data5 = phy_data->d5;
1367
1368 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1369 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1370 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1371 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1372 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1373 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1374
1375 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1376 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1377 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1378 } else {
1379 __le32 usig_a1 = phy_data->rx_vec[0];
1380 __le32 usig_a2 = phy_data->rx_vec[1];
1381
1382 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1383 IWL_RX_USIG_A1_DISREGARD,
1384 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1385 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1386 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1387 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1388 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1389 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1390 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1391 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1392 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1393 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1394 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1395 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1396 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1397 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1398 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1399 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1400 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1401 IWL_RX_USIG_A2_EHT_CRC_OK,
1402 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1403 }
1404 }
1405
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1406 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1407 struct ieee80211_rx_status *rx_status,
1408 struct ieee80211_radiotap_eht *eht)
1409 {
1410 u32 ru = le32_get_bits(eht->data[8],
1411 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1412 enum nl80211_eht_ru_alloc nl_ru;
1413
1414 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1415 * in an EHT variant User Info field
1416 */
1417
1418 switch (ru) {
1419 case 0 ... 36:
1420 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1421 break;
1422 case 37 ... 52:
1423 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1424 break;
1425 case 53 ... 60:
1426 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1427 break;
1428 case 61 ... 64:
1429 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1430 break;
1431 case 65 ... 66:
1432 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1433 break;
1434 case 67:
1435 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1436 break;
1437 case 68:
1438 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1439 break;
1440 case 69:
1441 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1442 break;
1443 case 70 ... 81:
1444 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1445 break;
1446 case 82 ... 89:
1447 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1448 break;
1449 case 90 ... 93:
1450 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1451 break;
1452 case 94 ... 95:
1453 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1454 break;
1455 case 96 ... 99:
1456 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1457 break;
1458 case 100 ... 103:
1459 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1460 break;
1461 case 104:
1462 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1463 break;
1464 case 105 ... 106:
1465 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1466 break;
1467 default:
1468 return;
1469 }
1470
1471 rx_status->bw = RATE_INFO_BW_EHT_RU;
1472 rx_status->eht.ru = nl_ru;
1473 }
1474
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)1475 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1476 struct iwl_mvm_rx_phy_data *phy_data,
1477 struct ieee80211_rx_status *rx_status,
1478 struct ieee80211_radiotap_eht *eht,
1479 struct ieee80211_radiotap_eht_usig *usig)
1480
1481 {
1482 __le32 data0 = phy_data->d0;
1483 __le32 data1 = phy_data->d1;
1484 __le32 usig_a1 = phy_data->rx_vec[0];
1485 u8 info_type = phy_data->info_type;
1486
1487 /* Not in EHT range */
1488 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1489 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1490 return;
1491
1492 usig->common |= cpu_to_le32
1493 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1494 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1495 if (phy_data->with_data) {
1496 usig->common |= LE32_DEC_ENC(data0,
1497 IWL_RX_PHY_DATA0_EHT_UPLINK,
1498 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1499 usig->common |= LE32_DEC_ENC(data0,
1500 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1501 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1502 } else {
1503 usig->common |= LE32_DEC_ENC(usig_a1,
1504 IWL_RX_USIG_A1_UL_FLAG,
1505 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1506 usig->common |= LE32_DEC_ENC(usig_a1,
1507 IWL_RX_USIG_A1_BSS_COLOR,
1508 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1509 }
1510
1511 if (fw_has_capa(&mvm->fw->ucode_capa,
1512 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1513 usig->common |=
1514 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1515 usig->common |=
1516 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1517 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1518 }
1519
1520 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1521 eht->data[0] |= LE32_DEC_ENC(data0,
1522 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1523 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1524
1525 /* All RU allocating size/index is in TB format */
1526 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1527 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1528 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1529 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1530 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1531 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1532 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1533
1534 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1535
1536 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1537 * which is on only in case of monitor mode so no need to check monitor
1538 * mode
1539 */
1540 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1541 eht->data[1] |=
1542 le32_encode_bits(mvm->monitor_p80,
1543 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1544
1545 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1546 if (phy_data->with_data)
1547 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1548 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1549 else
1550 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1551 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1552
1553 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1554 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1555 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1556
1557 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1558 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1559 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1560
1561 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1562 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1563 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1564
1565 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1566
1567 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1568 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1569
1570 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1571 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1572 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1573
1574 /*
1575 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1576 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1577 */
1578
1579 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1580 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1581 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1582
1583 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1584 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1585 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1586
1587 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1588 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1589 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1590 }
1591
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1592 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1593 struct iwl_mvm_rx_phy_data *phy_data,
1594 int queue)
1595 {
1596 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1597
1598 struct ieee80211_radiotap_eht *eht;
1599 struct ieee80211_radiotap_eht_usig *usig;
1600 size_t eht_len = sizeof(*eht);
1601
1602 u32 rate_n_flags = phy_data->rate_n_flags;
1603 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1604 /* EHT and HE have the same valus for LTF */
1605 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1606 u16 phy_info = phy_data->phy_info;
1607 u32 bw;
1608
1609 /* u32 for 1 user_info */
1610 if (phy_data->with_data)
1611 eht_len += sizeof(u32);
1612
1613 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1614
1615 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1616 sizeof(*usig));
1617 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1618 usig->common |=
1619 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1620
1621 /* specific handling for 320MHz */
1622 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1623 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1624 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1625 le32_to_cpu(phy_data->d0));
1626
1627 usig->common |= cpu_to_le32
1628 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1629
1630 /* report the AMPDU-EOF bit on single frames */
1631 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1632 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1633 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1634 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1635 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1636 }
1637
1638 /* update aggregation data for monitor sake on default queue */
1639 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1640 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1641 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1642 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1643 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1644 }
1645
1646 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1647 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1648
1649 #define CHECK_TYPE(F) \
1650 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1651 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1652
1653 CHECK_TYPE(SU);
1654 CHECK_TYPE(EXT_SU);
1655 CHECK_TYPE(MU);
1656 CHECK_TYPE(TRIG);
1657
1658 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1659 case 0:
1660 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1661 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1662 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1663 } else {
1664 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1665 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1666 }
1667 break;
1668 case 1:
1669 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1670 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1671 break;
1672 case 2:
1673 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1674 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1675 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1676 else
1677 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1678 break;
1679 case 3:
1680 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1681 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1682 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1683 }
1684 break;
1685 default:
1686 /* nothing here */
1687 break;
1688 }
1689
1690 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1691 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1692 eht->data[0] |= cpu_to_le32
1693 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1694 ltf) |
1695 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1696 rx_status->eht.gi));
1697 }
1698
1699
1700 if (!phy_data->with_data) {
1701 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1702 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1703 eht->data[7] |=
1704 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1705 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1706 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1707 if (rate_n_flags & RATE_MCS_BF_MSK)
1708 eht->data[7] |=
1709 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1710 } else {
1711 eht->user_info[0] |=
1712 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1713 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1714 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1715 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1716 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1717
1718 if (rate_n_flags & RATE_MCS_BF_MSK)
1719 eht->user_info[0] |=
1720 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1721
1722 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1723 eht->user_info[0] |=
1724 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1725
1726 eht->user_info[0] |= cpu_to_le32
1727 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1728 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1729 rate_n_flags)) |
1730 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1731 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1732 }
1733 }
1734
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1735 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1736 struct iwl_mvm_rx_phy_data *phy_data,
1737 int queue)
1738 {
1739 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1740 struct ieee80211_radiotap_he *he = NULL;
1741 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1742 u32 rate_n_flags = phy_data->rate_n_flags;
1743 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1744 u8 ltf;
1745 static const struct ieee80211_radiotap_he known = {
1746 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1747 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1748 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1749 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1750 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1751 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1752 };
1753 static const struct ieee80211_radiotap_he_mu mu_known = {
1754 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1755 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1756 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1757 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1758 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1759 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1760 };
1761 u16 phy_info = phy_data->phy_info;
1762
1763 he = skb_put_data(skb, &known, sizeof(known));
1764 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1765
1766 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1767 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1768 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1769 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1770 }
1771
1772 /* report the AMPDU-EOF bit on single frames */
1773 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1774 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1775 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1776 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1777 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1778 }
1779
1780 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1781 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1782 queue);
1783
1784 /* update aggregation data for monitor sake on default queue */
1785 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1786 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1787 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1788 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1789 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1790 }
1791
1792 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1793 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1794 rx_status->bw = RATE_INFO_BW_HE_RU;
1795 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1796 }
1797
1798 /* actually data is filled in mac80211 */
1799 if (he_type == RATE_MCS_HE_TYPE_SU ||
1800 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1801 he->data1 |=
1802 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1803
1804 #define CHECK_TYPE(F) \
1805 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1806 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1807
1808 CHECK_TYPE(SU);
1809 CHECK_TYPE(EXT_SU);
1810 CHECK_TYPE(MU);
1811 CHECK_TYPE(TRIG);
1812
1813 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1814
1815 if (rate_n_flags & RATE_MCS_BF_MSK)
1816 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1817
1818 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1819 RATE_MCS_HE_GI_LTF_POS) {
1820 case 0:
1821 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1822 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1823 else
1824 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1825 if (he_type == RATE_MCS_HE_TYPE_MU)
1826 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1827 else
1828 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1829 break;
1830 case 1:
1831 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1832 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1833 else
1834 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1835 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1836 break;
1837 case 2:
1838 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1839 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1840 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1841 } else {
1842 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1843 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1844 }
1845 break;
1846 case 3:
1847 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1848 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1849 break;
1850 case 4:
1851 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1852 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1853 break;
1854 default:
1855 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1856 }
1857
1858 he->data5 |= le16_encode_bits(ltf,
1859 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1860 }
1861
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)1862 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1863 struct iwl_mvm_rx_phy_data *phy_data)
1864 {
1865 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1866 struct ieee80211_radiotap_lsig *lsig;
1867
1868 switch (phy_data->info_type) {
1869 case IWL_RX_PHY_INFO_TYPE_HT:
1870 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1871 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1872 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1873 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1874 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1875 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1876 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1877 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1878 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1879 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1880 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1881 lsig = skb_put(skb, sizeof(*lsig));
1882 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1883 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1884 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1885 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1886 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1887 break;
1888 default:
1889 break;
1890 }
1891 }
1892
1893 struct iwl_rx_sta_csa {
1894 bool all_sta_unblocked;
1895 struct ieee80211_vif *vif;
1896 };
1897
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)1898 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1899 {
1900 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1901 struct iwl_rx_sta_csa *rx_sta_csa = data;
1902
1903 if (mvmsta->vif != rx_sta_csa->vif)
1904 return;
1905
1906 if (mvmsta->disable_tx)
1907 rx_sta_csa->all_sta_unblocked = false;
1908 }
1909
1910 /*
1911 * Note: requires also rx_status->band to be prefilled, as well
1912 * as phy_data (apart from phy_data->info_type)
1913 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1914 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1915 struct sk_buff *skb,
1916 struct iwl_mvm_rx_phy_data *phy_data,
1917 int queue)
1918 {
1919 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1920 u32 rate_n_flags = phy_data->rate_n_flags;
1921 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1922 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1923 bool is_sgi;
1924
1925 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
1926
1927 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1928 phy_data->info_type =
1929 le32_get_bits(phy_data->d1,
1930 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1931
1932 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1933 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1934 case RATE_MCS_CHAN_WIDTH_20:
1935 break;
1936 case RATE_MCS_CHAN_WIDTH_40:
1937 rx_status->bw = RATE_INFO_BW_40;
1938 break;
1939 case RATE_MCS_CHAN_WIDTH_80:
1940 rx_status->bw = RATE_INFO_BW_80;
1941 break;
1942 case RATE_MCS_CHAN_WIDTH_160:
1943 rx_status->bw = RATE_INFO_BW_160;
1944 break;
1945 case RATE_MCS_CHAN_WIDTH_320:
1946 rx_status->bw = RATE_INFO_BW_320;
1947 break;
1948 }
1949
1950 /* must be before L-SIG data */
1951 if (format == RATE_MCS_HE_MSK)
1952 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
1953
1954 iwl_mvm_decode_lsig(skb, phy_data);
1955
1956 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
1957 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
1958 rx_status->band);
1959 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
1960 phy_data->energy_a, phy_data->energy_b);
1961
1962 /* using TLV format and must be after all fixed len fields */
1963 if (format == RATE_MCS_EHT_MSK)
1964 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
1965
1966 if (unlikely(mvm->monitor_on))
1967 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1968
1969 is_sgi = format == RATE_MCS_HE_MSK ?
1970 iwl_he_is_sgi(rate_n_flags) :
1971 rate_n_flags & RATE_MCS_SGI_MSK;
1972
1973 if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
1974 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1975
1976 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1977 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1978
1979 switch (format) {
1980 case RATE_MCS_VHT_MSK:
1981 rx_status->encoding = RX_ENC_VHT;
1982 break;
1983 case RATE_MCS_HE_MSK:
1984 rx_status->encoding = RX_ENC_HE;
1985 rx_status->he_dcm =
1986 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1987 break;
1988 case RATE_MCS_EHT_MSK:
1989 rx_status->encoding = RX_ENC_EHT;
1990 break;
1991 }
1992
1993 switch (format) {
1994 case RATE_MCS_HT_MSK:
1995 rx_status->encoding = RX_ENC_HT;
1996 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
1997 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1998 break;
1999 case RATE_MCS_VHT_MSK:
2000 case RATE_MCS_HE_MSK:
2001 case RATE_MCS_EHT_MSK:
2002 rx_status->nss =
2003 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2004 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2005 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2006 break;
2007 default: {
2008 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2009 rx_status->band);
2010
2011 rx_status->rate_idx = rate;
2012
2013 if ((rate < 0 || rate > 0xFF)) {
2014 rx_status->rate_idx = 0;
2015 if (net_ratelimit())
2016 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2017 rate_n_flags, rx_status->band);
2018 }
2019
2020 break;
2021 }
2022 }
2023 }
2024
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2025 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2026 struct iwl_rx_cmd_buffer *rxb, int queue)
2027 {
2028 struct ieee80211_rx_status *rx_status;
2029 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2030 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2031 struct ieee80211_hdr *hdr;
2032 u32 len;
2033 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2034 struct ieee80211_sta *sta = NULL;
2035 struct ieee80211_link_sta *link_sta = NULL;
2036 struct sk_buff *skb;
2037 u8 crypt_len = 0;
2038 u8 sta_id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2039 size_t desc_size;
2040 struct iwl_mvm_rx_phy_data phy_data = {};
2041 u32 format;
2042
2043 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2044 return;
2045
2046 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2047 desc_size = sizeof(*desc);
2048 else
2049 desc_size = IWL_RX_DESC_SIZE_V1;
2050
2051 if (unlikely(pkt_len < desc_size)) {
2052 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2053 return;
2054 }
2055
2056 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2057 phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
2058 phy_data.channel = desc->v3.channel;
2059 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2060 phy_data.energy_a = desc->v3.energy_a;
2061 phy_data.energy_b = desc->v3.energy_b;
2062
2063 phy_data.d0 = desc->v3.phy_data0;
2064 phy_data.d1 = desc->v3.phy_data1;
2065 phy_data.d2 = desc->v3.phy_data2;
2066 phy_data.d3 = desc->v3.phy_data3;
2067 phy_data.eht_d4 = desc->phy_eht_data4;
2068 phy_data.d5 = desc->v3.phy_data5;
2069 } else {
2070 phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
2071 phy_data.channel = desc->v1.channel;
2072 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2073 phy_data.energy_a = desc->v1.energy_a;
2074 phy_data.energy_b = desc->v1.energy_b;
2075
2076 phy_data.d0 = desc->v1.phy_data0;
2077 phy_data.d1 = desc->v1.phy_data1;
2078 phy_data.d2 = desc->v1.phy_data2;
2079 phy_data.d3 = desc->v1.phy_data3;
2080 }
2081
2082 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2083 REPLY_RX_MPDU_CMD, 0) < 4) {
2084 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2085 IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
2086 phy_data.rate_n_flags);
2087 }
2088
2089 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2090
2091 len = le16_to_cpu(desc->mpdu_len);
2092
2093 if (unlikely(len + desc_size > pkt_len)) {
2094 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2095 return;
2096 }
2097
2098 phy_data.with_data = true;
2099 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2100 phy_data.d4 = desc->phy_data4;
2101
2102 hdr = (void *)(pkt->data + desc_size);
2103 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2104 * ieee80211_hdr pulled.
2105 */
2106 skb = alloc_skb(128, GFP_ATOMIC);
2107 if (!skb) {
2108 IWL_ERR(mvm, "alloc_skb failed\n");
2109 return;
2110 }
2111
2112 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2113 /*
2114 * If the device inserted padding it means that (it thought)
2115 * the 802.11 header wasn't a multiple of 4 bytes long. In
2116 * this case, reserve two bytes at the start of the SKB to
2117 * align the payload properly in case we end up copying it.
2118 */
2119 skb_reserve(skb, 2);
2120 }
2121
2122 rx_status = IEEE80211_SKB_RXCB(skb);
2123
2124 /*
2125 * Keep packets with CRC errors (and with overrun) for monitor mode
2126 * (otherwise the firmware discards them) but mark them as bad.
2127 */
2128 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2129 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2130 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2131 le32_to_cpu(desc->status));
2132 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2133 }
2134
2135 /* set the preamble flag if appropriate */
2136 if (format == RATE_MCS_CCK_MSK &&
2137 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2138 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2139
2140 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2141 u64 tsf_on_air_rise;
2142
2143 if (mvm->trans->trans_cfg->device_family >=
2144 IWL_DEVICE_FAMILY_AX210)
2145 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2146 else
2147 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2148
2149 rx_status->mactime = tsf_on_air_rise;
2150 /* TSF as indicated by the firmware is at INA time */
2151 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2152 }
2153
2154 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2155 u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
2156
2157 rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2158 } else {
2159 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2160 NL80211_BAND_2GHZ;
2161 }
2162
2163 /* update aggregation data for monitor sake on default queue */
2164 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2165 bool toggle_bit;
2166
2167 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2168 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2169 /*
2170 * Toggle is switched whenever new aggregation starts. Make
2171 * sure ampdu_reference is never 0 so we can later use it to
2172 * see if the frame was really part of an A-MPDU or not.
2173 */
2174 if (toggle_bit != mvm->ampdu_toggle) {
2175 mvm->ampdu_ref++;
2176 if (mvm->ampdu_ref == 0)
2177 mvm->ampdu_ref++;
2178 mvm->ampdu_toggle = toggle_bit;
2179 phy_data.first_subframe = true;
2180 }
2181 rx_status->ampdu_reference = mvm->ampdu_ref;
2182 }
2183
2184 rcu_read_lock();
2185
2186 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2187 if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2188 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2189 if (IS_ERR(sta))
2190 sta = NULL;
2191 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
2192
2193 if (sta && sta->valid_links && link_sta) {
2194 rx_status->link_valid = 1;
2195 rx_status->link_id = link_sta->link_id;
2196 }
2197 }
2198 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2199 /*
2200 * This is fine since we prevent two stations with the same
2201 * address from being added.
2202 */
2203 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2204 }
2205
2206 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2207 le32_to_cpu(pkt->len_n_flags), queue,
2208 &crypt_len)) {
2209 kfree_skb(skb);
2210 goto out;
2211 }
2212
2213 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2214
2215 if (sta) {
2216 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2217 struct ieee80211_vif *tx_blocked_vif =
2218 rcu_dereference(mvm->csa_tx_blocked_vif);
2219 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2220 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2221 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2222 struct iwl_fw_dbg_trigger_tlv *trig;
2223 struct ieee80211_vif *vif = mvmsta->vif;
2224
2225 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2226 !is_multicast_ether_addr(hdr->addr1) &&
2227 ieee80211_is_data(hdr->frame_control) &&
2228 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2229 schedule_delayed_work(&mvm->tcm.work, 0);
2230
2231 /*
2232 * We have tx blocked stations (with CS bit). If we heard
2233 * frames from a blocked station on a new channel we can
2234 * TX to it again.
2235 */
2236 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2237 struct iwl_mvm_vif *mvmvif =
2238 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2239 struct iwl_rx_sta_csa rx_sta_csa = {
2240 .all_sta_unblocked = true,
2241 .vif = tx_blocked_vif,
2242 };
2243
2244 if (mvmvif->csa_target_freq == rx_status->freq)
2245 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2246 false);
2247 ieee80211_iterate_stations_atomic(mvm->hw,
2248 iwl_mvm_rx_get_sta_block_tx,
2249 &rx_sta_csa);
2250
2251 if (rx_sta_csa.all_sta_unblocked) {
2252 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2253 /* Unblock BCAST / MCAST station */
2254 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2255 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2256 }
2257 }
2258
2259 rs_update_last_rssi(mvm, mvmsta, rx_status);
2260
2261 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2262 ieee80211_vif_to_wdev(vif),
2263 FW_DBG_TRIGGER_RSSI);
2264
2265 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2266 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2267 s32 rssi;
2268
2269 rssi_trig = (void *)trig->data;
2270 rssi = le32_to_cpu(rssi_trig->rssi);
2271
2272 if (rx_status->signal < rssi)
2273 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2274 NULL);
2275 }
2276
2277 if (ieee80211_is_data(hdr->frame_control))
2278 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2279
2280 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2281 IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2282 le16_to_cpu(hdr->seq_ctrl));
2283 kfree_skb(skb);
2284 goto out;
2285 }
2286
2287 /*
2288 * Our hardware de-aggregates AMSDUs but copies the mac header
2289 * as it to the de-aggregated MPDUs. We need to turn off the
2290 * AMSDU bit in the QoS control ourselves.
2291 * In addition, HW reverses addr3 and addr4 - reverse it back.
2292 */
2293 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2294 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2295 u8 *qc = ieee80211_get_qos_ctl(hdr);
2296
2297 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2298
2299 if (mvm->trans->trans_cfg->device_family ==
2300 IWL_DEVICE_FAMILY_9000) {
2301 iwl_mvm_flip_address(hdr->addr3);
2302
2303 if (ieee80211_has_a4(hdr->frame_control))
2304 iwl_mvm_flip_address(hdr->addr4);
2305 }
2306 }
2307 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2308 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2309
2310 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2311 }
2312
2313 if (ieee80211_is_data(hdr->frame_control)) {
2314 u8 sub_frame_idx = desc->amsdu_info &
2315 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
2316
2317 /* 0 means not an A-MSDU, and 1 means a new A-MSDU */
2318 if (!sub_frame_idx || sub_frame_idx == 1)
2319 iwl_mvm_count_mpdu(mvmsta, sta_id, 1, false,
2320 queue);
2321 }
2322 }
2323
2324 /* management stuff on default queue */
2325 if (!queue) {
2326 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2327 ieee80211_is_probe_resp(hdr->frame_control)) &&
2328 mvm->sched_scan_pass_all ==
2329 SCHED_SCAN_PASS_ALL_ENABLED))
2330 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2331
2332 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2333 ieee80211_is_probe_resp(hdr->frame_control)))
2334 rx_status->boottime_ns = ktime_get_boottime_ns();
2335 }
2336
2337 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2338 kfree_skb(skb);
2339 goto out;
2340 }
2341
2342 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2343 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2344 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2345 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2346 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2347 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2348 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2349
2350 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2351 }
2352 out:
2353 rcu_read_unlock();
2354 }
2355
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2356 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2357 struct iwl_rx_cmd_buffer *rxb, int queue)
2358 {
2359 struct ieee80211_rx_status *rx_status;
2360 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2361 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2362 u32 rssi;
2363 u32 info_type;
2364 struct ieee80211_sta *sta = NULL;
2365 struct sk_buff *skb;
2366 struct iwl_mvm_rx_phy_data phy_data;
2367 u32 format;
2368
2369 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2370 return;
2371
2372 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2373 return;
2374
2375 rssi = le32_to_cpu(desc->rssi);
2376 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
2377 phy_data.d0 = desc->phy_info[0];
2378 phy_data.d1 = desc->phy_info[1];
2379 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2380 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2381 phy_data.rate_n_flags = le32_to_cpu(desc->rate);
2382 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2383 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2384 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2385 phy_data.with_data = false;
2386 phy_data.rx_vec[0] = desc->rx_vec[0];
2387 phy_data.rx_vec[1] = desc->rx_vec[1];
2388
2389 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2390 RX_NO_DATA_NOTIF, 0) < 2) {
2391 IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
2392 phy_data.rate_n_flags);
2393 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2394 IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
2395 phy_data.rate_n_flags);
2396 }
2397
2398 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2399
2400 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2401 RX_NO_DATA_NOTIF, 0) >= 3) {
2402 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2403 sizeof(struct iwl_rx_no_data_ver_3)))
2404 /* invalid len for ver 3 */
2405 return;
2406 phy_data.rx_vec[2] = desc->rx_vec[2];
2407 phy_data.rx_vec[3] = desc->rx_vec[3];
2408 } else {
2409 if (format == RATE_MCS_EHT_MSK)
2410 /* no support for EHT before version 3 API */
2411 return;
2412 }
2413
2414 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2415 * ieee80211_hdr pulled.
2416 */
2417 skb = alloc_skb(128, GFP_ATOMIC);
2418 if (!skb) {
2419 IWL_ERR(mvm, "alloc_skb failed\n");
2420 return;
2421 }
2422
2423 rx_status = IEEE80211_SKB_RXCB(skb);
2424
2425 /* 0-length PSDU */
2426 rx_status->flag |= RX_FLAG_NO_PSDU;
2427
2428 switch (info_type) {
2429 case RX_NO_DATA_INFO_TYPE_NDP:
2430 rx_status->zero_length_psdu_type =
2431 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2432 break;
2433 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2434 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2435 rx_status->zero_length_psdu_type =
2436 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2437 break;
2438 default:
2439 rx_status->zero_length_psdu_type =
2440 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2441 break;
2442 }
2443
2444 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2445 NL80211_BAND_2GHZ;
2446
2447 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2448
2449 /* no more radio tap info should be put after this point.
2450 *
2451 * We mark it as mac header, for upper layers to know where
2452 * all radio tap header ends.
2453 *
2454 * Since data doesn't move data while putting data on skb and that is
2455 * the only way we use, data + len is the next place that hdr would be put
2456 */
2457 skb_set_mac_header(skb, skb->len);
2458
2459 /*
2460 * Override the nss from the rx_vec since the rate_n_flags has
2461 * only 2 bits for the nss which gives a max of 4 ss but there
2462 * may be up to 8 spatial streams.
2463 */
2464 switch (format) {
2465 case RATE_MCS_VHT_MSK:
2466 rx_status->nss =
2467 le32_get_bits(desc->rx_vec[0],
2468 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2469 break;
2470 case RATE_MCS_HE_MSK:
2471 rx_status->nss =
2472 le32_get_bits(desc->rx_vec[0],
2473 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2474 break;
2475 case RATE_MCS_EHT_MSK:
2476 rx_status->nss =
2477 le32_get_bits(desc->rx_vec[2],
2478 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2479 }
2480
2481 rcu_read_lock();
2482 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2483 rcu_read_unlock();
2484 }
2485
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2486 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2487 struct iwl_rx_cmd_buffer *rxb, int queue)
2488 {
2489 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2490 struct iwl_frame_release *release = (void *)pkt->data;
2491
2492 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2493 return;
2494
2495 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2496 le16_to_cpu(release->nssn),
2497 queue);
2498 }
2499
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2500 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2501 struct iwl_rx_cmd_buffer *rxb, int queue)
2502 {
2503 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2504 struct iwl_bar_frame_release *release = (void *)pkt->data;
2505 unsigned int baid = le32_get_bits(release->ba_info,
2506 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2507 unsigned int nssn = le32_get_bits(release->ba_info,
2508 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2509 unsigned int sta_id = le32_get_bits(release->sta_tid,
2510 IWL_BAR_FRAME_RELEASE_STA_MASK);
2511 unsigned int tid = le32_get_bits(release->sta_tid,
2512 IWL_BAR_FRAME_RELEASE_TID_MASK);
2513 struct iwl_mvm_baid_data *baid_data;
2514
2515 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2516 return;
2517
2518 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2519 baid >= ARRAY_SIZE(mvm->baid_map)))
2520 return;
2521
2522 rcu_read_lock();
2523 baid_data = rcu_dereference(mvm->baid_map[baid]);
2524 if (!baid_data) {
2525 IWL_DEBUG_RX(mvm,
2526 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2527 baid);
2528 goto out;
2529 }
2530
2531 if (WARN(tid != baid_data->tid || sta_id > IWL_MVM_STATION_COUNT_MAX ||
2532 !(baid_data->sta_mask & BIT(sta_id)),
2533 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2534 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2535 tid))
2536 goto out;
2537
2538 IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2539 nssn);
2540
2541 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2542 out:
2543 rcu_read_unlock();
2544 }
2545