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